summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorTobias Markmann <tm@ayena.de>2018-03-20 13:12:10 (GMT)
committerTobias Markmann <tm@ayena.de>2018-03-20 14:48:04 (GMT)
commitf2c2c7d035029fb9615b42c18ccea83e8e705b10 (patch)
tree2f56fb77de0f366528395f21732d418f016f63b5 /3rdParty/Breakpad/src/common/dwarf
parent44581c5285d13c0ec715b35ddc79177e5ebeef39 (diff)
parent5ba3f18ad8efa040d49f36d83ec2e7891a9add9f (diff)
downloadswift-swift-5.0alpha2.zip
swift-swift-5.0alpha2.tar.bz2
Merge branch 'swift-4.x'swift-5.0alpha2
* swift-4.x: (44 commits) Test-Information: Builds on macOS 10.13.3 with clang trunk. Change-Id: If50381f103b0ad18d038b920d3d43537642141cb
Diffstat (limited to '3rdParty/Breakpad/src/common/dwarf')
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/bytereader-inl.h29
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/bytereader.cc11
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/bytereader.h31
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/bytereader_unittest.cc707
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/cfi_assembler.cc204
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/cfi_assembler.h271
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.cc10
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.h18
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler_unittest.cc527
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2enums.h37
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2reader.cc617
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2reader.h449
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc2555
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2reader_die_unittest.cc487
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/dwarf2reader_test_common.h149
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/elf_reader.cc1273
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/elf_reader.h166
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/functioninfo.cc231
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/functioninfo.h188
-rw-r--r--3rdParty/Breakpad/src/common/dwarf/types.h8
20 files changed, 7718 insertions, 250 deletions
diff --git a/3rdParty/Breakpad/src/common/dwarf/bytereader-inl.h b/3rdParty/Breakpad/src/common/dwarf/bytereader-inl.h
index 3c16708..42c92f9 100644
--- a/3rdParty/Breakpad/src/common/dwarf/bytereader-inl.h
+++ b/3rdParty/Breakpad/src/common/dwarf/bytereader-inl.h
@@ -32,16 +32,15 @@
#include "common/dwarf/bytereader.h"
#include <assert.h>
+#include <stdint.h>
namespace dwarf2reader {
-inline uint8 ByteReader::ReadOneByte(const char* buffer) const {
+inline uint8 ByteReader::ReadOneByte(const uint8_t *buffer) const {
return buffer[0];
}
-inline uint16 ByteReader::ReadTwoBytes(const char* signed_buffer) const {
- const unsigned char *buffer
- = reinterpret_cast<const unsigned char *>(signed_buffer);
+inline uint16 ByteReader::ReadTwoBytes(const uint8_t *buffer) const {
const uint16 buffer0 = buffer[0];
const uint16 buffer1 = buffer[1];
if (endian_ == ENDIANNESS_LITTLE) {
@@ -51,9 +50,7 @@ inline uint16 ByteReader::ReadTwoBytes(const char* signed_buffer) const {
}
}
-inline uint64 ByteReader::ReadFourBytes(const char* signed_buffer) const {
- const unsigned char *buffer
- = reinterpret_cast<const unsigned char *>(signed_buffer);
+inline uint64 ByteReader::ReadFourBytes(const uint8_t *buffer) const {
const uint32 buffer0 = buffer[0];
const uint32 buffer1 = buffer[1];
const uint32 buffer2 = buffer[2];
@@ -65,9 +62,7 @@ inline uint64 ByteReader::ReadFourBytes(const char* signed_buffer) const {
}
}
-inline uint64 ByteReader::ReadEightBytes(const char* signed_buffer) const {
- const unsigned char *buffer
- = reinterpret_cast<const unsigned char *>(signed_buffer);
+inline uint64 ByteReader::ReadEightBytes(const uint8_t *buffer) const {
const uint64 buffer0 = buffer[0];
const uint64 buffer1 = buffer[1];
const uint64 buffer2 = buffer[2];
@@ -89,12 +84,12 @@ inline uint64 ByteReader::ReadEightBytes(const char* signed_buffer) const {
// information, plus one bit saying whether the number continues or
// not.
-inline uint64 ByteReader::ReadUnsignedLEB128(const char* buffer,
+inline uint64 ByteReader::ReadUnsignedLEB128(const uint8_t *buffer,
size_t* len) const {
uint64 result = 0;
size_t num_read = 0;
unsigned int shift = 0;
- unsigned char byte;
+ uint8_t byte;
do {
byte = *buffer++;
@@ -114,12 +109,12 @@ inline uint64 ByteReader::ReadUnsignedLEB128(const char* buffer,
// Read a signed LEB128 number. These are like regular LEB128
// numbers, except the last byte may have a sign bit set.
-inline int64 ByteReader::ReadSignedLEB128(const char* buffer,
+inline int64 ByteReader::ReadSignedLEB128(const uint8_t *buffer,
size_t* len) const {
int64 result = 0;
unsigned int shift = 0;
size_t num_read = 0;
- unsigned char byte;
+ uint8_t byte;
do {
byte = *buffer++;
@@ -134,18 +129,18 @@ inline int64 ByteReader::ReadSignedLEB128(const char* buffer,
return result;
}
-inline uint64 ByteReader::ReadOffset(const char* buffer) const {
+inline uint64 ByteReader::ReadOffset(const uint8_t *buffer) const {
assert(this->offset_reader_);
return (this->*offset_reader_)(buffer);
}
-inline uint64 ByteReader::ReadAddress(const char* buffer) const {
+inline uint64 ByteReader::ReadAddress(const uint8_t *buffer) const {
assert(this->address_reader_);
return (this->*address_reader_)(buffer);
}
inline void ByteReader::SetCFIDataBase(uint64 section_base,
- const char *buffer_base) {
+ const uint8_t *buffer_base) {
section_base_ = section_base;
buffer_base_ = buffer_base;
have_section_base_ = true;
diff --git a/3rdParty/Breakpad/src/common/dwarf/bytereader.cc b/3rdParty/Breakpad/src/common/dwarf/bytereader.cc
index 6802026..14b43ad 100644
--- a/3rdParty/Breakpad/src/common/dwarf/bytereader.cc
+++ b/3rdParty/Breakpad/src/common/dwarf/bytereader.cc
@@ -27,6 +27,7 @@
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <assert.h>
+#include <stdint.h>
#include <stdlib.h>
#include "common/dwarf/bytereader-inl.h"
@@ -62,7 +63,7 @@ void ByteReader::SetAddressSize(uint8 size) {
}
}
-uint64 ByteReader::ReadInitialLength(const char* start, size_t* len) {
+uint64 ByteReader::ReadInitialLength(const uint8_t *start, size_t* len) {
const uint64 initial_length = ReadFourBytes(start);
start += 4;
@@ -100,7 +101,7 @@ bool ByteReader::UsableEncoding(DwarfPointerEncoding encoding) const {
}
}
-uint64 ByteReader::ReadEncodedPointer(const char *buffer,
+uint64 ByteReader::ReadEncodedPointer(const uint8_t *buffer,
DwarfPointerEncoding encoding,
size_t *len) const {
// UsableEncoding doesn't approve of DW_EH_PE_omit, so we shouldn't
@@ -129,7 +130,7 @@ uint64 ByteReader::ReadEncodedPointer(const char *buffer,
// Round up to the next boundary.
uint64 aligned = (offset + AddressSize() - 1) & -AddressSize();
// Convert back to a pointer.
- const char *aligned_buffer = buffer_base_ + (aligned - skew);
+ const uint8_t *aligned_buffer = buffer_base_ + (aligned - skew);
// Finally, store the length and actually fetch the pointer.
*len = aligned_buffer - buffer + AddressSize();
return ReadAddress(aligned_buffer);
@@ -242,4 +243,8 @@ uint64 ByteReader::ReadEncodedPointer(const char *buffer,
return pointer;
}
+Endianness ByteReader::GetEndianness() const {
+ return endian_;
+}
+
} // namespace dwarf2reader
diff --git a/3rdParty/Breakpad/src/common/dwarf/bytereader.h b/3rdParty/Breakpad/src/common/dwarf/bytereader.h
index e389427..59d4303 100644
--- a/3rdParty/Breakpad/src/common/dwarf/bytereader.h
+++ b/3rdParty/Breakpad/src/common/dwarf/bytereader.h
@@ -31,7 +31,10 @@
#ifndef COMMON_DWARF_BYTEREADER_H__
#define COMMON_DWARF_BYTEREADER_H__
+#include <stdint.h>
+
#include <string>
+
#include "common/dwarf/types.h"
#include "common/dwarf/dwarf2enums.h"
@@ -59,22 +62,22 @@ class ByteReader {
// Read a single byte from BUFFER and return it as an unsigned 8 bit
// number.
- uint8 ReadOneByte(const char* buffer) const;
+ uint8 ReadOneByte(const uint8_t *buffer) const;
// Read two bytes from BUFFER and return them as an unsigned 16 bit
// number, using this ByteReader's endianness.
- uint16 ReadTwoBytes(const char* buffer) const;
+ uint16 ReadTwoBytes(const uint8_t *buffer) const;
// Read four bytes from BUFFER and return them as an unsigned 32 bit
// number, using this ByteReader's endianness. This function returns
// a uint64 so that it is compatible with ReadAddress and
// ReadOffset. The number it returns will never be outside the range
// of an unsigned 32 bit integer.
- uint64 ReadFourBytes(const char* buffer) const;
+ uint64 ReadFourBytes(const uint8_t *buffer) const;
// Read eight bytes from BUFFER and return them as an unsigned 64
// bit number, using this ByteReader's endianness.
- uint64 ReadEightBytes(const char* buffer) const;
+ uint64 ReadEightBytes(const uint8_t *buffer) const;
// Read an unsigned LEB128 (Little Endian Base 128) number from
// BUFFER and return it as an unsigned 64 bit integer. Set LEN to
@@ -93,7 +96,7 @@ class ByteReader {
// In other words, we break VALUE into groups of seven bits, put
// them in little-endian order, and then write them as eight-bit
// bytes with the high bit on all but the last.
- uint64 ReadUnsignedLEB128(const char* buffer, size_t* len) const;
+ uint64 ReadUnsignedLEB128(const uint8_t *buffer, size_t *len) const;
// Read a signed LEB128 number from BUFFER and return it as an
// signed 64 bit integer. Set LEN to the number of bytes read.
@@ -112,7 +115,7 @@ class ByteReader {
// In other words, we break VALUE into groups of seven bits, put
// them in little-endian order, and then write them as eight-bit
// bytes with the high bit on all but the last.
- int64 ReadSignedLEB128(const char* buffer, size_t* len) const;
+ int64 ReadSignedLEB128(const uint8_t *buffer, size_t *len) const;
// Indicate that addresses on this architecture are SIZE bytes long. SIZE
// must be either 4 or 8. (DWARF allows addresses to be any number of
@@ -135,7 +138,7 @@ class ByteReader {
// Read an address from BUFFER and return it as an unsigned 64 bit
// integer, respecting this ByteReader's endianness and address size. You
// must call SetAddressSize before calling this function.
- uint64 ReadAddress(const char* buffer) const;
+ uint64 ReadAddress(const uint8_t *buffer) const;
// DWARF actually defines two slightly different formats: 32-bit DWARF
// and 64-bit DWARF. This is *not* related to the size of registers or
@@ -172,14 +175,14 @@ class ByteReader {
// - The 32-bit value 0xffffffff, followed by a 64-bit byte count,
// indicating that the data whose length is being measured uses
// the 64-bit DWARF format.
- uint64 ReadInitialLength(const char* start, size_t* len);
+ uint64 ReadInitialLength(const uint8_t *start, size_t *len);
// Read an offset from BUFFER and return it as an unsigned 64 bit
// integer, respecting the ByteReader's endianness. In 32-bit DWARF, the
// offset is 4 bytes long; in 64-bit DWARF, the offset is eight bytes
// long. You must call ReadInitialLength or SetOffsetSize before calling
// this function; see the comments above for details.
- uint64 ReadOffset(const char* buffer) const;
+ uint64 ReadOffset(const uint8_t *buffer) const;
// Return the current offset size, in bytes.
// A return value of 4 indicates that we are reading 32-bit DWARF.
@@ -234,7 +237,7 @@ class ByteReader {
// is BUFFER_BASE. This allows us to find the address that a given
// byte in our buffer would have when loaded into the program the
// data describes. We need this to resolve DW_EH_PE_pcrel pointers.
- void SetCFIDataBase(uint64 section_base, const char *buffer_base);
+ void SetCFIDataBase(uint64 section_base, const uint8_t *buffer_base);
// Indicate that the base address of the program's ".text" section
// is TEXT_BASE. We need this to resolve DW_EH_PE_textrel pointers.
@@ -273,13 +276,15 @@ class ByteReader {
// base address this reader hasn't been given, so you should check
// with ValidEncoding and UsableEncoding first if you would rather
// die in a more helpful way.
- uint64 ReadEncodedPointer(const char *buffer, DwarfPointerEncoding encoding,
+ uint64 ReadEncodedPointer(const uint8_t *buffer,
+ DwarfPointerEncoding encoding,
size_t *len) const;
+ Endianness GetEndianness() const;
private:
// Function pointer type for our address and offset readers.
- typedef uint64 (ByteReader::*AddressReader)(const char*) const;
+ typedef uint64 (ByteReader::*AddressReader)(const uint8_t *) const;
// Read an offset from BUFFER and return it as an unsigned 64 bit
// integer. DWARF2/3 define offsets as either 4 or 8 bytes,
@@ -302,7 +307,7 @@ class ByteReader {
bool have_section_base_, have_text_base_, have_data_base_;
bool have_function_base_;
uint64 section_base_, text_base_, data_base_, function_base_;
- const char *buffer_base_;
+ const uint8_t *buffer_base_;
};
} // namespace dwarf2reader
diff --git a/3rdParty/Breakpad/src/common/dwarf/bytereader_unittest.cc b/3rdParty/Breakpad/src/common/dwarf/bytereader_unittest.cc
new file mode 100644
index 0000000..e66062d
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/bytereader_unittest.cc
@@ -0,0 +1,707 @@
+// Copyright (c) 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// bytereader_unittest.cc: Unit tests for dwarf2reader::ByteReader
+
+#include <stdint.h>
+
+#include <string>
+
+#include "breakpad_googletest_includes.h"
+#include "common/dwarf/bytereader.h"
+#include "common/dwarf/bytereader-inl.h"
+#include "common/dwarf/cfi_assembler.h"
+#include "common/using_std_string.h"
+
+using dwarf2reader::ByteReader;
+using dwarf2reader::DwarfPointerEncoding;
+using dwarf2reader::ENDIANNESS_BIG;
+using dwarf2reader::ENDIANNESS_LITTLE;
+using google_breakpad::CFISection;
+using google_breakpad::test_assembler::Label;
+using google_breakpad::test_assembler::kBigEndian;
+using google_breakpad::test_assembler::kLittleEndian;
+using google_breakpad::test_assembler::Section;
+using testing::Test;
+
+struct ReaderFixture {
+ string contents;
+ size_t pointer_size;
+};
+
+class Reader: public ReaderFixture, public Test { };
+class ReaderDeathTest: public ReaderFixture, public Test { };
+
+TEST_F(Reader, SimpleConstructor) {
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ CFISection section(kBigEndian, 4);
+ section
+ .D8(0xc0)
+ .D16(0xcf0d)
+ .D32(0x96fdd219)
+ .D64(0xbbf55fef0825f117ULL)
+ .ULEB128(0xa0927048ba8121afULL)
+ .LEB128(-0x4f337badf4483f83LL)
+ .D32(0xfec319c9);
+ ASSERT_TRUE(section.GetContents(&contents));
+ const uint8_t *data = reinterpret_cast<const uint8_t *>(contents.data());
+ EXPECT_EQ(0xc0U, reader.ReadOneByte(data));
+ EXPECT_EQ(0xcf0dU, reader.ReadTwoBytes(data + 1));
+ EXPECT_EQ(0x96fdd219U, reader.ReadFourBytes(data + 3));
+ EXPECT_EQ(0xbbf55fef0825f117ULL, reader.ReadEightBytes(data + 7));
+ size_t leb128_size;
+ EXPECT_EQ(0xa0927048ba8121afULL,
+ reader.ReadUnsignedLEB128(data + 15, &leb128_size));
+ EXPECT_EQ(10U, leb128_size);
+ EXPECT_EQ(-0x4f337badf4483f83LL,
+ reader.ReadSignedLEB128(data + 25, &leb128_size));
+ EXPECT_EQ(10U, leb128_size);
+ EXPECT_EQ(0xfec319c9, reader.ReadAddress(data + 35));
+}
+
+TEST_F(Reader, ValidEncodings) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_absptr)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_omit)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_aligned)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_uleb128)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata2)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata4)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata8)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sleb128)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata2)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata4)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata8)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_pcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_textrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_datarel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_absptr |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_uleb128 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata2 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata4 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_udata8 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sleb128 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata2 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata4 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+ EXPECT_TRUE(reader.ValidEncoding(
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect |
+ dwarf2reader::DW_EH_PE_sdata8 |
+ dwarf2reader::DW_EH_PE_funcrel)));
+
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x05)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x07)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x0d)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x0f)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x51)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x60)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0x70)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0xf0)));
+ EXPECT_FALSE(reader.ValidEncoding(DwarfPointerEncoding(0xd0)));
+}
+
+TEST_F(ReaderDeathTest, DW_EH_PE_omit) {
+ static const uint8_t data[] = { 42 };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ EXPECT_DEATH(reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_omit,
+ &pointer_size),
+ "encoding != DW_EH_PE_omit");
+}
+
+TEST_F(Reader, DW_EH_PE_absptr4) {
+ static const uint8_t data[] = { 0x27, 0x57, 0xea, 0x40 };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ EXPECT_EQ(0x40ea5727U,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_absptr,
+ &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_absptr8) {
+ static const uint8_t data[] = {
+ 0x60, 0x27, 0x57, 0xea, 0x40, 0xc2, 0x98, 0x05, 0x01, 0x50
+ };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0x010598c240ea5727ULL,
+ reader.ReadEncodedPointer(data + 1, dwarf2reader::DW_EH_PE_absptr,
+ &pointer_size));
+ EXPECT_EQ(8U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_uleb128) {
+ static const uint8_t data[] = { 0x81, 0x84, 0x4c };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ EXPECT_EQ(0x130201U,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_uleb128,
+ &pointer_size));
+ EXPECT_EQ(3U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_udata2) {
+ static const uint8_t data[] = { 0xf4, 0x8d };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ EXPECT_EQ(0xf48dU,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_udata2,
+ &pointer_size));
+ EXPECT_EQ(2U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_udata4) {
+ static const uint8_t data[] = { 0xb2, 0x68, 0xa5, 0x62, 0x8f, 0x8b };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0xa5628f8b,
+ reader.ReadEncodedPointer(data + 2, dwarf2reader::DW_EH_PE_udata4,
+ &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_udata8Addr8) {
+ static const uint8_t data[] = {
+ 0x27, 0x04, 0x73, 0x04, 0x69, 0x9f, 0x19, 0xed, 0x8f, 0xfe
+ };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0x8fed199f69047304ULL,
+ reader.ReadEncodedPointer(data + 1, dwarf2reader::DW_EH_PE_udata8,
+ &pointer_size));
+ EXPECT_EQ(8U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_udata8Addr4) {
+ static const uint8_t data[] = {
+ 0x27, 0x04, 0x73, 0x04, 0x69, 0x9f, 0x19, 0xed, 0x8f, 0xfe
+ };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ EXPECT_EQ(0x69047304ULL,
+ reader.ReadEncodedPointer(data + 1, dwarf2reader::DW_EH_PE_udata8,
+ &pointer_size));
+ EXPECT_EQ(8U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_sleb128) {
+ static const uint8_t data[] = { 0x42, 0xff, 0xfb, 0x73 };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ EXPECT_EQ(-0x030201U & 0xffffffff,
+ reader.ReadEncodedPointer(data + 1, dwarf2reader::DW_EH_PE_sleb128,
+ &pointer_size));
+ EXPECT_EQ(3U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_sdata2) {
+ static const uint8_t data[] = { 0xb9, 0xbf };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0xffffffffffffbfb9ULL,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_sdata2,
+ &pointer_size));
+ EXPECT_EQ(2U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_sdata4) {
+ static const uint8_t data[] = { 0xa0, 0xca, 0xf2, 0xb8, 0xc2, 0xad };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0xffffffffadc2b8f2ULL,
+ reader.ReadEncodedPointer(data + 2, dwarf2reader::DW_EH_PE_sdata4,
+ &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_sdata8) {
+ static const uint8_t data[] = {
+ 0xf6, 0x66, 0x57, 0x79, 0xe0, 0x0c, 0x9b, 0x26, 0x87
+ };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(8);
+ EXPECT_EQ(0x87269b0ce0795766ULL,
+ reader.ReadEncodedPointer(data + 1, dwarf2reader::DW_EH_PE_sdata8,
+ &pointer_size));
+ EXPECT_EQ(8U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_pcrel) {
+ static const uint8_t data[] = {
+ 0x4a, 0x8b, 0x1b, 0x14, 0xc8, 0xc4, 0x02, 0xce
+ };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ DwarfPointerEncoding encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_pcrel
+ | dwarf2reader::DW_EH_PE_absptr);
+ reader.SetCFIDataBase(0x89951377, data);
+ EXPECT_EQ(0x89951377 + 3 + 0x14c8c402,
+ reader.ReadEncodedPointer(data + 3, encoding, &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_textrel) {
+ static const uint8_t data[] = {
+ 0xd9, 0x0d, 0x05, 0x17, 0xc9, 0x7a, 0x42, 0x1e
+ };
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(4);
+ reader.SetTextBase(0xb91beaf0);
+ DwarfPointerEncoding encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_textrel
+ | dwarf2reader::DW_EH_PE_sdata2);
+ EXPECT_EQ((0xb91beaf0 + 0xffffc917) & 0xffffffff,
+ reader.ReadEncodedPointer(data + 3, encoding, &pointer_size));
+ EXPECT_EQ(2U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_datarel) {
+ static const uint8_t data[] = {
+ 0x16, 0xf2, 0xbb, 0x82, 0x68, 0xa7, 0xbc, 0x39
+ };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(8);
+ reader.SetDataBase(0xbef308bd25ce74f0ULL);
+ DwarfPointerEncoding encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_datarel
+ | dwarf2reader::DW_EH_PE_sleb128);
+ EXPECT_EQ(0xbef308bd25ce74f0ULL + 0xfffffffffffa013bULL,
+ reader.ReadEncodedPointer(data + 2, encoding, &pointer_size));
+ EXPECT_EQ(3U, pointer_size);
+}
+
+TEST_F(Reader, DW_EH_PE_funcrel) {
+ static const uint8_t data[] = {
+ 0x84, 0xf8, 0x14, 0x01, 0x61, 0xd1, 0x48, 0xc9
+ };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetAddressSize(4);
+ reader.SetFunctionBase(0x823c3520);
+ DwarfPointerEncoding encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_funcrel
+ | dwarf2reader::DW_EH_PE_udata2);
+ EXPECT_EQ(0x823c3520 + 0xd148,
+ reader.ReadEncodedPointer(data + 5, encoding, &pointer_size));
+ EXPECT_EQ(2U, pointer_size);
+}
+
+TEST(UsableBase, CFI) {
+ static const uint8_t data[] = { 0x42 };
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetCFIDataBase(0xb31cbd20, data);
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_absptr));
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_pcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_textrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_datarel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_funcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_omit));
+ EXPECT_FALSE(reader.UsableEncoding(DwarfPointerEncoding(0x60)));
+}
+
+TEST(UsableBase, Text) {
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetTextBase(0xa899ccb9);
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_absptr));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_pcrel));
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_textrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_datarel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_funcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_omit));
+ EXPECT_FALSE(reader.UsableEncoding(DwarfPointerEncoding(0x60)));
+}
+
+TEST(UsableBase, Data) {
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetDataBase(0xf7b10bcd);
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_absptr));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_pcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_textrel));
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_datarel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_funcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_omit));
+ EXPECT_FALSE(reader.UsableEncoding(DwarfPointerEncoding(0x60)));
+}
+
+TEST(UsableBase, Function) {
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetFunctionBase(0xc2c0ed81);
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_absptr));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_pcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_textrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_datarel));
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_funcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_omit));
+ EXPECT_FALSE(reader.UsableEncoding(DwarfPointerEncoding(0x60)));
+}
+
+TEST(UsableBase, ClearFunction) {
+ ByteReader reader(ENDIANNESS_BIG);
+ reader.SetFunctionBase(0xc2c0ed81);
+ reader.ClearFunctionBase();
+ EXPECT_TRUE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_absptr));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_pcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_textrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_datarel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_funcrel));
+ EXPECT_FALSE(reader.UsableEncoding(dwarf2reader::DW_EH_PE_omit));
+ EXPECT_FALSE(reader.UsableEncoding(DwarfPointerEncoding(0x60)));
+}
+
+struct AlignedFixture {
+ AlignedFixture() : reader(ENDIANNESS_BIG) { reader.SetAddressSize(4); }
+ static const uint8_t data[10];
+ ByteReader reader;
+ size_t pointer_size;
+};
+
+const uint8_t AlignedFixture::data[10] = {
+ 0xfe, 0x6e, 0x93, 0xd8, 0x34, 0xd5, 0x1c, 0xd3, 0xac, 0x2b
+};
+
+class Aligned: public AlignedFixture, public Test { };
+
+TEST_F(Aligned, DW_EH_PE_aligned0) {
+ reader.SetCFIDataBase(0xb440305c, data);
+ EXPECT_EQ(0xfe6e93d8U,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned1) {
+ reader.SetCFIDataBase(0xb440305d, data);
+ EXPECT_EQ(0xd834d51cU,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(7U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned2) {
+ reader.SetCFIDataBase(0xb440305e, data);
+ EXPECT_EQ(0x93d834d5U,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(6U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned3) {
+ reader.SetCFIDataBase(0xb440305f, data);
+ EXPECT_EQ(0x6e93d834U,
+ reader.ReadEncodedPointer(data, dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(5U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned11) {
+ reader.SetCFIDataBase(0xb4403061, data);
+ EXPECT_EQ(0xd834d51cU,
+ reader.ReadEncodedPointer(data + 1,
+ dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(6U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned30) {
+ reader.SetCFIDataBase(0xb4403063, data);
+ EXPECT_EQ(0x6e93d834U,
+ reader.ReadEncodedPointer(data + 1,
+ dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(4U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned23) {
+ reader.SetCFIDataBase(0xb4403062, data);
+ EXPECT_EQ(0x1cd3ac2bU,
+ reader.ReadEncodedPointer(data + 3,
+ dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(7U, pointer_size);
+}
+
+TEST_F(Aligned, DW_EH_PE_aligned03) {
+ reader.SetCFIDataBase(0xb4403064, data);
+ EXPECT_EQ(0x34d51cd3U,
+ reader.ReadEncodedPointer(data + 3,
+ dwarf2reader::DW_EH_PE_aligned,
+ &pointer_size));
+ EXPECT_EQ(5U, pointer_size);
+}
diff --git a/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.cc b/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.cc
new file mode 100644
index 0000000..2dc2208
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.cc
@@ -0,0 +1,204 @@
+// Copyright (c) 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// cfi_assembler.cc: Implementation of google_breakpad::CFISection class.
+// See cfi_assembler.h for details.
+
+#include "common/dwarf/cfi_assembler.h"
+
+#include <assert.h>
+#include <stdlib.h>
+
+namespace google_breakpad {
+
+using dwarf2reader::DwarfPointerEncoding;
+
+CFISection &CFISection::CIEHeader(uint64_t code_alignment_factor,
+ int data_alignment_factor,
+ unsigned return_address_register,
+ uint8_t version,
+ const string &augmentation,
+ bool dwarf64,
+ uint8_t address_size,
+ uint8_t segment_size) {
+ assert(!entry_length_);
+ entry_length_ = new PendingLength();
+ in_fde_ = false;
+
+ if (dwarf64) {
+ D32(kDwarf64InitialLengthMarker);
+ D64(entry_length_->length);
+ entry_length_->start = Here();
+ D64(eh_frame_ ? kEHFrame64CIEIdentifier : kDwarf64CIEIdentifier);
+ } else {
+ D32(entry_length_->length);
+ entry_length_->start = Here();
+ D32(eh_frame_ ? kEHFrame32CIEIdentifier : kDwarf32CIEIdentifier);
+ }
+ D8(version);
+ AppendCString(augmentation);
+ if (version >= 4) {
+ D8(address_size);
+ D8(segment_size);
+ }
+ ULEB128(code_alignment_factor);
+ LEB128(data_alignment_factor);
+ if (version == 1)
+ D8(return_address_register);
+ else
+ ULEB128(return_address_register);
+ return *this;
+}
+
+CFISection &CFISection::FDEHeader(Label cie_pointer,
+ uint64_t initial_location,
+ uint64_t address_range,
+ bool dwarf64) {
+ assert(!entry_length_);
+ entry_length_ = new PendingLength();
+ in_fde_ = true;
+ fde_start_address_ = initial_location;
+
+ if (dwarf64) {
+ D32(0xffffffff);
+ D64(entry_length_->length);
+ entry_length_->start = Here();
+ if (eh_frame_)
+ D64(Here() - cie_pointer);
+ else
+ D64(cie_pointer);
+ } else {
+ D32(entry_length_->length);
+ entry_length_->start = Here();
+ if (eh_frame_)
+ D32(Here() - cie_pointer);
+ else
+ D32(cie_pointer);
+ }
+ EncodedPointer(initial_location);
+ // The FDE length in an .eh_frame section uses the same encoding as the
+ // initial location, but ignores the base address (selected by the upper
+ // nybble of the encoding), as it's a length, not an address that can be
+ // made relative.
+ EncodedPointer(address_range,
+ DwarfPointerEncoding(pointer_encoding_ & 0x0f));
+ return *this;
+}
+
+CFISection &CFISection::FinishEntry() {
+ assert(entry_length_);
+ Align(address_size_, dwarf2reader::DW_CFA_nop);
+ entry_length_->length = Here() - entry_length_->start;
+ delete entry_length_;
+ entry_length_ = NULL;
+ in_fde_ = false;
+ return *this;
+}
+
+CFISection &CFISection::EncodedPointer(uint64_t address,
+ DwarfPointerEncoding encoding,
+ const EncodedPointerBases &bases) {
+ // Omitted data is extremely easy to emit.
+ if (encoding == dwarf2reader::DW_EH_PE_omit)
+ return *this;
+
+ // If (encoding & dwarf2reader::DW_EH_PE_indirect) != 0, then we assume
+ // that ADDRESS is the address at which the pointer is stored --- in
+ // other words, that bit has no effect on how we write the pointer.
+ encoding = DwarfPointerEncoding(encoding & ~dwarf2reader::DW_EH_PE_indirect);
+
+ // Find the base address to which this pointer is relative. The upper
+ // nybble of the encoding specifies this.
+ uint64_t base;
+ switch (encoding & 0xf0) {
+ case dwarf2reader::DW_EH_PE_absptr: base = 0; break;
+ case dwarf2reader::DW_EH_PE_pcrel: base = bases.cfi + Size(); break;
+ case dwarf2reader::DW_EH_PE_textrel: base = bases.text; break;
+ case dwarf2reader::DW_EH_PE_datarel: base = bases.data; break;
+ case dwarf2reader::DW_EH_PE_funcrel: base = fde_start_address_; break;
+ case dwarf2reader::DW_EH_PE_aligned: base = 0; break;
+ default: abort();
+ };
+
+ // Make ADDRESS relative. Yes, this is appropriate even for "absptr"
+ // values; see gcc/unwind-pe.h.
+ address -= base;
+
+ // Align the pointer, if required.
+ if ((encoding & 0xf0) == dwarf2reader::DW_EH_PE_aligned)
+ Align(AddressSize());
+
+ // Append ADDRESS to this section in the appropriate form. For the
+ // fixed-width forms, we don't need to differentiate between signed and
+ // unsigned encodings, because ADDRESS has already been extended to 64
+ // bits before it was passed to us.
+ switch (encoding & 0x0f) {
+ case dwarf2reader::DW_EH_PE_absptr:
+ Address(address);
+ break;
+
+ case dwarf2reader::DW_EH_PE_uleb128:
+ ULEB128(address);
+ break;
+
+ case dwarf2reader::DW_EH_PE_sleb128:
+ LEB128(address);
+ break;
+
+ case dwarf2reader::DW_EH_PE_udata2:
+ case dwarf2reader::DW_EH_PE_sdata2:
+ D16(address);
+ break;
+
+ case dwarf2reader::DW_EH_PE_udata4:
+ case dwarf2reader::DW_EH_PE_sdata4:
+ D32(address);
+ break;
+
+ case dwarf2reader::DW_EH_PE_udata8:
+ case dwarf2reader::DW_EH_PE_sdata8:
+ D64(address);
+ break;
+
+ default:
+ abort();
+ }
+
+ return *this;
+};
+
+const uint32_t CFISection::kDwarf64InitialLengthMarker;
+const uint32_t CFISection::kDwarf32CIEIdentifier;
+const uint64_t CFISection::kDwarf64CIEIdentifier;
+const uint32_t CFISection::kEHFrame32CIEIdentifier;
+const uint64_t CFISection::kEHFrame64CIEIdentifier;
+
+} // namespace google_breakpad
diff --git a/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.h b/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.h
new file mode 100644
index 0000000..bd7354d
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/cfi_assembler.h
@@ -0,0 +1,271 @@
+// -*- mode: C++ -*-
+
+// Copyright (c) 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// cfi_assembler.h: Define CFISection, a class for creating properly
+// (and improperly) formatted DWARF CFI data for unit tests.
+
+#ifndef PROCESSOR_CFI_ASSEMBLER_H_
+#define PROCESSOR_CFI_ASSEMBLER_H_
+
+#include <string>
+
+#include "common/dwarf/dwarf2enums.h"
+#include "common/test_assembler.h"
+#include "common/using_std_string.h"
+#include "google_breakpad/common/breakpad_types.h"
+
+namespace google_breakpad {
+
+using dwarf2reader::DwarfPointerEncoding;
+using google_breakpad::test_assembler::Endianness;
+using google_breakpad::test_assembler::Label;
+using google_breakpad::test_assembler::Section;
+
+class CFISection: public Section {
+ public:
+
+ // CFI augmentation strings beginning with 'z', defined by the
+ // Linux/IA-64 C++ ABI, can specify interesting encodings for
+ // addresses appearing in FDE headers and call frame instructions (and
+ // for additional fields whose presence the augmentation string
+ // specifies). In particular, pointers can be specified to be relative
+ // to various base address: the start of the .text section, the
+ // location holding the address itself, and so on. These allow the
+ // frame data to be position-independent even when they live in
+ // write-protected pages. These variants are specified at the
+ // following two URLs:
+ //
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/dwarfext.html
+ // http://refspecs.linux-foundation.org/LSB_4.0.0/LSB-Core-generic/LSB-Core-generic/ehframechpt.html
+ //
+ // CFISection leaves the production of well-formed 'z'-augmented CIEs and
+ // FDEs to the user, but does provide EncodedPointer, to emit
+ // properly-encoded addresses for a given pointer encoding.
+ // EncodedPointer uses an instance of this structure to find the base
+ // addresses it should use; you can establish a default for all encoded
+ // pointers appended to this section with SetEncodedPointerBases.
+ struct EncodedPointerBases {
+ EncodedPointerBases() : cfi(), text(), data() { }
+
+ // The starting address of this CFI section in memory, for
+ // DW_EH_PE_pcrel. DW_EH_PE_pcrel pointers may only be used in data
+ // that has is loaded into the program's address space.
+ uint64_t cfi;
+
+ // The starting address of this file's .text section, for DW_EH_PE_textrel.
+ uint64_t text;
+
+ // The starting address of this file's .got or .eh_frame_hdr section,
+ // for DW_EH_PE_datarel.
+ uint64_t data;
+ };
+
+ // Create a CFISection whose endianness is ENDIANNESS, and where
+ // machine addresses are ADDRESS_SIZE bytes long. If EH_FRAME is
+ // true, use the .eh_frame format, as described by the Linux
+ // Standards Base Core Specification, instead of the DWARF CFI
+ // format.
+ CFISection(Endianness endianness, size_t address_size,
+ bool eh_frame = false)
+ : Section(endianness), address_size_(address_size), eh_frame_(eh_frame),
+ pointer_encoding_(dwarf2reader::DW_EH_PE_absptr),
+ encoded_pointer_bases_(), entry_length_(NULL), in_fde_(false) {
+ // The 'start', 'Here', and 'Mark' members of a CFISection all refer
+ // to section offsets.
+ start() = 0;
+ }
+
+ // Return this CFISection's address size.
+ size_t AddressSize() const { return address_size_; }
+
+ // Return true if this CFISection uses the .eh_frame format, or
+ // false if it contains ordinary DWARF CFI data.
+ bool ContainsEHFrame() const { return eh_frame_; }
+
+ // Use ENCODING for pointers in calls to FDEHeader and EncodedPointer.
+ void SetPointerEncoding(DwarfPointerEncoding encoding) {
+ pointer_encoding_ = encoding;
+ }
+
+ // Use the addresses in BASES as the base addresses for encoded
+ // pointers in subsequent calls to FDEHeader or EncodedPointer.
+ // This function makes a copy of BASES.
+ void SetEncodedPointerBases(const EncodedPointerBases &bases) {
+ encoded_pointer_bases_ = bases;
+ }
+
+ // Append a Common Information Entry header to this section with the
+ // given values. If dwarf64 is true, use the 64-bit DWARF initial
+ // length format for the CIE's initial length. Return a reference to
+ // this section. You should call FinishEntry after writing the last
+ // instruction for the CIE.
+ //
+ // Before calling this function, you will typically want to use Mark
+ // or Here to make a label to pass to FDEHeader that refers to this
+ // CIE's position in the section.
+ CFISection &CIEHeader(uint64_t code_alignment_factor,
+ int data_alignment_factor,
+ unsigned return_address_register,
+ uint8_t version = 3,
+ const string &augmentation = "",
+ bool dwarf64 = false,
+ uint8_t address_size = 8,
+ uint8_t segment_size = 0);
+
+ // Append a Frame Description Entry header to this section with the
+ // given values. If dwarf64 is true, use the 64-bit DWARF initial
+ // length format for the CIE's initial length. Return a reference to
+ // this section. You should call FinishEntry after writing the last
+ // instruction for the CIE.
+ //
+ // This function doesn't support entries that are longer than
+ // 0xffffff00 bytes. (The "initial length" is always a 32-bit
+ // value.) Nor does it support .debug_frame sections longer than
+ // 0xffffff00 bytes.
+ CFISection &FDEHeader(Label cie_pointer,
+ uint64_t initial_location,
+ uint64_t address_range,
+ bool dwarf64 = false);
+
+ // Note the current position as the end of the last CIE or FDE we
+ // started, after padding with DW_CFA_nops for alignment. This
+ // defines the label representing the entry's length, cited in the
+ // entry's header. Return a reference to this section.
+ CFISection &FinishEntry();
+
+ // Append the contents of BLOCK as a DW_FORM_block value: an
+ // unsigned LEB128 length, followed by that many bytes of data.
+ CFISection &Block(const string &block) {
+ ULEB128(block.size());
+ Append(block);
+ return *this;
+ }
+
+ // Append ADDRESS to this section, in the appropriate size and
+ // endianness. Return a reference to this section.
+ CFISection &Address(uint64_t address) {
+ Section::Append(endianness(), address_size_, address);
+ return *this;
+ }
+ CFISection &Address(Label address) {
+ Section::Append(endianness(), address_size_, address);
+ return *this;
+ }
+
+ // Append ADDRESS to this section, using ENCODING and BASES. ENCODING
+ // defaults to this section's default encoding, established by
+ // SetPointerEncoding. BASES defaults to this section's bases, set by
+ // SetEncodedPointerBases. If the DW_EH_PE_indirect bit is set in the
+ // encoding, assume that ADDRESS is where the true address is stored.
+ // Return a reference to this section.
+ //
+ // (C++ doesn't let me use default arguments here, because I want to
+ // refer to members of *this in the default argument expression.)
+ CFISection &EncodedPointer(uint64_t address) {
+ return EncodedPointer(address, pointer_encoding_, encoded_pointer_bases_);
+ }
+ CFISection &EncodedPointer(uint64_t address, DwarfPointerEncoding encoding) {
+ return EncodedPointer(address, encoding, encoded_pointer_bases_);
+ }
+ CFISection &EncodedPointer(uint64_t address, DwarfPointerEncoding encoding,
+ const EncodedPointerBases &bases);
+
+ // Restate some member functions, to keep chaining working nicely.
+ CFISection &Mark(Label *label) { Section::Mark(label); return *this; }
+ CFISection &D8(uint8_t v) { Section::D8(v); return *this; }
+ CFISection &D16(uint16_t v) { Section::D16(v); return *this; }
+ CFISection &D16(Label v) { Section::D16(v); return *this; }
+ CFISection &D32(uint32_t v) { Section::D32(v); return *this; }
+ CFISection &D32(const Label &v) { Section::D32(v); return *this; }
+ CFISection &D64(uint64_t v) { Section::D64(v); return *this; }
+ CFISection &D64(const Label &v) { Section::D64(v); return *this; }
+ CFISection &LEB128(long long v) { Section::LEB128(v); return *this; }
+ CFISection &ULEB128(uint64_t v) { Section::ULEB128(v); return *this; }
+
+ private:
+ // A length value that we've appended to the section, but is not yet
+ // known. LENGTH is the appended value; START is a label referring
+ // to the start of the data whose length was cited.
+ struct PendingLength {
+ Label length;
+ Label start;
+ };
+
+ // Constants used in CFI/.eh_frame data:
+
+ // If the first four bytes of an "initial length" are this constant, then
+ // the data uses the 64-bit DWARF format, and the length itself is the
+ // subsequent eight bytes.
+ static const uint32_t kDwarf64InitialLengthMarker = 0xffffffffU;
+
+ // The CIE identifier for 32- and 64-bit DWARF CFI and .eh_frame data.
+ static const uint32_t kDwarf32CIEIdentifier = ~(uint32_t)0;
+ static const uint64_t kDwarf64CIEIdentifier = ~(uint64_t)0;
+ static const uint32_t kEHFrame32CIEIdentifier = 0;
+ static const uint64_t kEHFrame64CIEIdentifier = 0;
+
+ // The size of a machine address for the data in this section.
+ size_t address_size_;
+
+ // If true, we are generating a Linux .eh_frame section, instead of
+ // a standard DWARF .debug_frame section.
+ bool eh_frame_;
+
+ // The encoding to use for FDE pointers.
+ DwarfPointerEncoding pointer_encoding_;
+
+ // The base addresses to use when emitting encoded pointers.
+ EncodedPointerBases encoded_pointer_bases_;
+
+ // The length value for the current entry.
+ //
+ // Oddly, this must be dynamically allocated. Labels never get new
+ // values; they only acquire constraints on the value they already
+ // have, or assert if you assign them something incompatible. So
+ // each header needs truly fresh Label objects to cite in their
+ // headers and track their positions. The alternative is explicit
+ // destructor invocation and a placement new. Ick.
+ PendingLength *entry_length_;
+
+ // True if we are currently emitting an FDE --- that is, we have
+ // called FDEHeader but have not yet called FinishEntry.
+ bool in_fde_;
+
+ // If in_fde_ is true, this is its starting address. We use this for
+ // emitting DW_EH_PE_funcrel pointers.
+ uint64_t fde_start_address_;
+};
+
+} // namespace google_breakpad
+
+#endif // PROCESSOR_CFI_ASSEMBLER_H_
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.cc b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.cc
index c741d69..94542b5 100644
--- a/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.cc
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.cc
@@ -32,6 +32,7 @@
// See dwarf2diehandler.h for details.
#include <assert.h>
+#include <stdint.h>
#include <string>
@@ -57,8 +58,7 @@ bool DIEDispatcher::StartCompilationUnit(uint64 offset, uint8 address_size,
dwarf_version);
}
-bool DIEDispatcher::StartDIE(uint64 offset, enum DwarfTag tag,
- const AttributeList& attrs) {
+bool DIEDispatcher::StartDIE(uint64 offset, enum DwarfTag tag) {
// The stack entry for the parent of this DIE, if there is one.
HandlerStack *parent = die_handlers_.empty() ? NULL : &die_handlers_.top();
@@ -82,7 +82,7 @@ bool DIEDispatcher::StartDIE(uint64 offset, enum DwarfTag tag,
if (parent) {
if (parent->handler_)
// Ask the parent to find a handler.
- handler = parent->handler_->FindChildHandler(offset, tag, attrs);
+ handler = parent->handler_->FindChildHandler(offset, tag);
else
// No parent handler means we're not interested in any of our
// children.
@@ -92,7 +92,7 @@ bool DIEDispatcher::StartDIE(uint64 offset, enum DwarfTag tag,
// decides whether to visit it, but the root DIE has no parent
// handler, so we have a special method on the root DIE handler
// itself to decide.
- if (root_handler_->StartRootDIE(offset, tag, attrs))
+ if (root_handler_->StartRootDIE(offset, tag))
handler = root_handler_;
else
handler = NULL;
@@ -168,7 +168,7 @@ void DIEDispatcher::ProcessAttributeReference(uint64 offset,
void DIEDispatcher::ProcessAttributeBuffer(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
- const char* data,
+ const uint8_t *data,
uint64 len) {
HandlerStack &current = die_handlers_.top();
// This had better be an attribute of the DIE we were meant to handle.
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.h b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.h
index 12b8d3a..a1e589a 100644
--- a/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.h
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler.h
@@ -156,6 +156,8 @@
#ifndef COMMON_DWARF_DWARF2DIEHANDLER_H__
#define COMMON_DWARF_DWARF2DIEHANDLER_H__
+#include <stdint.h>
+
#include <stack>
#include <string>
@@ -206,7 +208,7 @@ class DIEHandler {
uint64 data) { }
virtual void ProcessAttributeBuffer(enum DwarfAttribute attr,
enum DwarfForm form,
- const char* data,
+ const uint8_t *data,
uint64 len) { }
virtual void ProcessAttributeString(enum DwarfAttribute attr,
enum DwarfForm form,
@@ -239,12 +241,10 @@ class DIEHandler {
// that child DIE (and all its descendants).
//
// OFFSET is the offset of the child; TAG indicates what kind of DIE
- // it is; and ATTRS is the list of attributes the DIE will have, and
- // their forms (their values are not provided).
+ // it is.
//
// The default definition skips all children.
- virtual DIEHandler *FindChildHandler(uint64 offset, enum DwarfTag tag,
- const AttributeList &attrs) {
+ virtual DIEHandler *FindChildHandler(uint64 offset, enum DwarfTag tag) {
return NULL;
}
@@ -280,8 +280,7 @@ class RootDIEHandler: public DIEHandler {
// unit.
//
// The default definition elects to visit the root DIE.
- virtual bool StartRootDIE(uint64 offset, enum DwarfTag tag,
- const AttributeList& attrs) { return true; }
+ virtual bool StartRootDIE(uint64 offset, enum DwarfTag tag) { return true; }
};
class DIEDispatcher: public Dwarf2Handler {
@@ -296,8 +295,7 @@ class DIEDispatcher: public Dwarf2Handler {
bool StartCompilationUnit(uint64 offset, uint8 address_size,
uint8 offset_size, uint64 cu_length,
uint8 dwarf_version);
- bool StartDIE(uint64 offset, enum DwarfTag tag,
- const AttributeList &attrs);
+ bool StartDIE(uint64 offset, enum DwarfTag tag);
void ProcessAttributeUnsigned(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
@@ -313,7 +311,7 @@ class DIEDispatcher: public Dwarf2Handler {
void ProcessAttributeBuffer(uint64 offset,
enum DwarfAttribute attr,
enum DwarfForm form,
- const char* data,
+ const uint8_t *data,
uint64 len);
void ProcessAttributeString(uint64 offset,
enum DwarfAttribute attr,
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler_unittest.cc b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler_unittest.cc
new file mode 100644
index 0000000..db70eb3
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2diehandler_unittest.cc
@@ -0,0 +1,527 @@
+// -*- mode: c++ -*-
+
+// Copyright (c) 2010 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// dwarf2diehander_unittest.cc: Unit tests for google_breakpad::DIEDispatcher.
+
+#include <stdint.h>
+
+#include <string>
+#include <utility>
+
+#include "breakpad_googletest_includes.h"
+
+#include "common/dwarf/dwarf2diehandler.h"
+#include "common/using_std_string.h"
+
+using std::make_pair;
+
+using ::testing::_;
+using ::testing::ContainerEq;
+using ::testing::ElementsAreArray;
+using ::testing::Eq;
+using ::testing::InSequence;
+using ::testing::Return;
+using ::testing::Sequence;
+using ::testing::StrEq;
+
+using dwarf2reader::DIEDispatcher;
+using dwarf2reader::DIEHandler;
+using dwarf2reader::DwarfAttribute;
+using dwarf2reader::DwarfForm;
+using dwarf2reader::DwarfTag;
+using dwarf2reader::RootDIEHandler;
+
+class MockDIEHandler: public DIEHandler {
+ public:
+ MOCK_METHOD3(ProcessAttributeUnsigned,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD3(ProcessAttributeSigned,
+ void(DwarfAttribute, DwarfForm, int64));
+ MOCK_METHOD3(ProcessAttributeReference,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD4(ProcessAttributeBuffer,
+ void(DwarfAttribute, DwarfForm, const uint8_t *, uint64));
+ MOCK_METHOD3(ProcessAttributeString,
+ void(DwarfAttribute, DwarfForm, const string &));
+ MOCK_METHOD3(ProcessAttributeSignature,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD0(EndAttributes, bool());
+ MOCK_METHOD2(FindChildHandler, DIEHandler *(uint64, DwarfTag));
+ MOCK_METHOD0(Finish, void());
+};
+
+class MockRootDIEHandler: public RootDIEHandler {
+ public:
+ MOCK_METHOD3(ProcessAttributeUnsigned,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD3(ProcessAttributeSigned,
+ void(DwarfAttribute, DwarfForm, int64));
+ MOCK_METHOD3(ProcessAttributeReference,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD4(ProcessAttributeBuffer,
+ void(DwarfAttribute, DwarfForm, const uint8_t *, uint64));
+ MOCK_METHOD3(ProcessAttributeString,
+ void(DwarfAttribute, DwarfForm, const string &));
+ MOCK_METHOD3(ProcessAttributeSignature,
+ void(DwarfAttribute, DwarfForm, uint64));
+ MOCK_METHOD0(EndAttributes, bool());
+ MOCK_METHOD2(FindChildHandler, DIEHandler *(uint64, DwarfTag));
+ MOCK_METHOD0(Finish, void());
+ MOCK_METHOD5(StartCompilationUnit, bool(uint64, uint8, uint8, uint64, uint8));
+ MOCK_METHOD2(StartRootDIE, bool(uint64, DwarfTag));
+};
+
+// If the handler elects to skip the compilation unit, the dispatcher
+// should tell the reader so.
+TEST(Dwarf2DIEHandler, SkipCompilationUnit) {
+ Sequence s;
+ MockRootDIEHandler mock_root_handler;
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0x8d42aed77cfccf3eLL,
+ 0x89, 0xdc,
+ 0x2ecb4dc778a80f21LL,
+ 0x66))
+ .InSequence(s)
+ .WillOnce(Return(false));
+
+ EXPECT_FALSE(die_dispatcher.StartCompilationUnit(0x8d42aed77cfccf3eLL,
+ 0x89, 0xdc,
+ 0x2ecb4dc778a80f21LL,
+ 0x66));
+}
+
+// If the handler elects to skip the root DIE, the dispatcher should
+// tell the reader so.
+TEST(Dwarf2DIEHandler, SkipRootDIE) {
+ Sequence s;
+ MockRootDIEHandler mock_root_handler;
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0xde8994029fc8b999LL, 0xf4, 0x02,
+ 0xb00febffa76e2b2bLL, 0x5c))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(mock_root_handler,
+ StartRootDIE(0x7d08242b4b510cf2LL, (DwarfTag) 0xb4f98da6))
+ .InSequence(s)
+ .WillOnce(Return(false));
+
+ EXPECT_TRUE(die_dispatcher.StartCompilationUnit(0xde8994029fc8b999LL,
+ 0xf4, 0x02,
+ 0xb00febffa76e2b2bLL, 0x5c));
+ EXPECT_FALSE(die_dispatcher.StartDIE(0x7d08242b4b510cf2LL,
+ (DwarfTag) 0xb4f98da6));
+ die_dispatcher.EndDIE(0x7d08242b4b510cf2LL);
+}
+
+// If the handler elects to skip the root DIE's children, the
+// dispatcher should tell the reader so --- and avoid deleting the
+// root handler.
+TEST(Dwarf2DIEHandler, SkipRootDIEChildren) {
+ MockRootDIEHandler mock_root_handler;
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ {
+ InSequence s;
+
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0x15d6897480cc65a7LL, 0x26, 0xa0,
+ 0x09f8bf0767f91675LL, 0xdb))
+ .WillOnce(Return(true));
+ EXPECT_CALL(mock_root_handler,
+ StartRootDIE(0x7d08242b4b510cf2LL, (DwarfTag) 0xb4f98da6))
+ .WillOnce(Return(true));
+ // Please don't tell me about my children.
+ EXPECT_CALL(mock_root_handler, EndAttributes())
+ .WillOnce(Return(false));
+ EXPECT_CALL(mock_root_handler, Finish())
+ .WillOnce(Return());
+ }
+
+ EXPECT_TRUE(die_dispatcher.StartCompilationUnit(0x15d6897480cc65a7LL,
+ 0x26, 0xa0,
+ 0x09f8bf0767f91675LL, 0xdb));
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x7d08242b4b510cf2LL,
+ (DwarfTag) 0xb4f98da6));
+ EXPECT_FALSE(die_dispatcher.StartDIE(0x435150ceedccda18LL,
+ (DwarfTag) 0xc3a17bba));
+ die_dispatcher.EndDIE(0x435150ceedccda18LL);
+ die_dispatcher.EndDIE(0x7d08242b4b510cf2LL);
+}
+
+// The dispatcher should pass attribute values through to the die
+// handler accurately.
+TEST(Dwarf2DIEHandler, PassAttributeValues) {
+ MockRootDIEHandler mock_root_handler;
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ const uint8_t buffer[10] = {
+ 0x24, 0x24, 0x35, 0x9a, 0xca, 0xcf, 0xa8, 0x84, 0xa7, 0x18
+ };
+ string str = "\xc8\x26\x2e\x0d\xa4\x9c\x37\xd6\xfb\x1d";
+
+ // Set expectations.
+ {
+ InSequence s;
+
+ // We'll like the compilation unit header.
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0x8d42aed77cfccf3eLL, 0x89, 0xdc,
+ 0x2ecb4dc778a80f21LL, 0x66))
+ .WillOnce(Return(true));
+
+ // We'll like the root DIE.
+ EXPECT_CALL(mock_root_handler,
+ StartRootDIE(0xe2222da01e29f2a9LL, (DwarfTag) 0x9829445c))
+ .WillOnce(Return(true));
+
+ // Expect some attribute values.
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeUnsigned((DwarfAttribute) 0x1cc0bfed,
+ (DwarfForm) 0x424f1468,
+ 0xa592571997facda1ULL))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeSigned((DwarfAttribute) 0x43694dc9,
+ (DwarfForm) 0xf6f78901L,
+ 0x92602a4e3bf1f446LL))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeReference((DwarfAttribute) 0x4033e8cL,
+ (DwarfForm) 0xf66fbe0bL,
+ 0x50fddef44734fdecULL))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeBuffer((DwarfAttribute) 0x25d7e0af,
+ (DwarfForm) 0xe99a539a,
+ buffer, sizeof(buffer)))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeString((DwarfAttribute) 0x310ed065,
+ (DwarfForm) 0x15762fec,
+ StrEq(str)))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeSignature((DwarfAttribute) 0x58790d72,
+ (DwarfForm) 0x4159f138,
+ 0x94682463613e6a5fULL))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler, EndAttributes())
+ .WillOnce(Return(true));
+ EXPECT_CALL(mock_root_handler, FindChildHandler(_, _))
+ .Times(0);
+ EXPECT_CALL(mock_root_handler, Finish())
+ .WillOnce(Return());
+ }
+
+ // Drive the dispatcher.
+
+ // Report the CU header.
+ EXPECT_TRUE(die_dispatcher.StartCompilationUnit(0x8d42aed77cfccf3eLL,
+ 0x89, 0xdc,
+ 0x2ecb4dc778a80f21LL,
+ 0x66));
+ // Report the root DIE.
+ EXPECT_TRUE(die_dispatcher.StartDIE(0xe2222da01e29f2a9LL,
+ (DwarfTag) 0x9829445c));
+
+ // Report some attribute values.
+ die_dispatcher.ProcessAttributeUnsigned(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x1cc0bfed,
+ (DwarfForm) 0x424f1468,
+ 0xa592571997facda1ULL);
+ die_dispatcher.ProcessAttributeSigned(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x43694dc9,
+ (DwarfForm) 0xf6f78901,
+ 0x92602a4e3bf1f446LL);
+ die_dispatcher.ProcessAttributeReference(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x4033e8c,
+ (DwarfForm) 0xf66fbe0b,
+ 0x50fddef44734fdecULL);
+ die_dispatcher.ProcessAttributeBuffer(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x25d7e0af,
+ (DwarfForm) 0xe99a539a,
+ buffer, sizeof(buffer));
+ die_dispatcher.ProcessAttributeString(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x310ed065,
+ (DwarfForm) 0x15762fec,
+ str);
+ die_dispatcher.ProcessAttributeSignature(0xe2222da01e29f2a9LL,
+ (DwarfAttribute) 0x58790d72,
+ (DwarfForm) 0x4159f138,
+ 0x94682463613e6a5fULL);
+
+ // Finish the root DIE (and thus the CU).
+ die_dispatcher.EndDIE(0xe2222da01e29f2a9LL);
+}
+
+TEST(Dwarf2DIEHandler, FindAndSkipChildren) {
+ MockRootDIEHandler mock_root_handler;
+ MockDIEHandler *mock_child1_handler = new(MockDIEHandler);
+ MockDIEHandler *mock_child3_handler = new(MockDIEHandler);
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ {
+ InSequence s;
+
+ // We'll like the compilation unit header.
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0x9ec1e6d05e434a0eLL, 0xeb, 0x21,
+ 0x47dd3c764275a216LL, 0xa5))
+ .WillOnce(Return(true));
+
+ // Root DIE.
+ {
+ EXPECT_CALL(mock_root_handler,
+ StartRootDIE(0x15f0e06bdfe3c372LL, (DwarfTag) 0xf5d60c59))
+ .WillOnce(Return(true));
+ EXPECT_CALL(mock_root_handler,
+ ProcessAttributeSigned((DwarfAttribute) 0xf779a642,
+ (DwarfForm) 0x2cb63027,
+ 0x18e744661769d08fLL))
+ .WillOnce(Return());
+ EXPECT_CALL(mock_root_handler, EndAttributes())
+ .WillOnce(Return(true));
+
+ // First child DIE.
+ EXPECT_CALL(mock_root_handler,
+ FindChildHandler(0x149f644f8116fe8cLL,
+ (DwarfTag) 0xac2cbd8c))
+ .WillOnce(Return(mock_child1_handler));
+ {
+ EXPECT_CALL(*mock_child1_handler,
+ ProcessAttributeSigned((DwarfAttribute) 0xa6fd6f65,
+ (DwarfForm) 0xe4f64c41,
+ 0x1b04e5444a55fe67LL))
+ .WillOnce(Return());
+ EXPECT_CALL(*mock_child1_handler, EndAttributes())
+ .WillOnce(Return(false));
+ // Skip first grandchild DIE and first great-grandchild DIE.
+ EXPECT_CALL(*mock_child1_handler, Finish())
+ .WillOnce(Return());
+ }
+
+ // Second child DIE. Root handler will decline to return a handler
+ // for this child.
+ EXPECT_CALL(mock_root_handler,
+ FindChildHandler(0x97412be24875de9dLL,
+ (DwarfTag) 0x505a068b))
+ .WillOnce(Return((DIEHandler *) NULL));
+
+ // Third child DIE.
+ EXPECT_CALL(mock_root_handler,
+ FindChildHandler(0x753c964c8ab538aeLL,
+ (DwarfTag) 0x8c22970e))
+ .WillOnce(Return(mock_child3_handler));
+ {
+ EXPECT_CALL(*mock_child3_handler,
+ ProcessAttributeSigned((DwarfAttribute) 0x4e2b7cfb,
+ (DwarfForm) 0x610b7ae1,
+ 0x3ea5c609d7d7560fLL))
+ .WillOnce(Return());
+ EXPECT_CALL(*mock_child3_handler, EndAttributes())
+ .WillOnce(Return(true));
+ EXPECT_CALL(*mock_child3_handler, Finish())
+ .WillOnce(Return());
+ }
+
+ EXPECT_CALL(mock_root_handler, Finish())
+ .WillOnce(Return());
+ }
+ }
+
+
+ // Drive the dispatcher.
+
+ // Report the CU header.
+ EXPECT_TRUE(die_dispatcher
+ .StartCompilationUnit(0x9ec1e6d05e434a0eLL, 0xeb, 0x21,
+ 0x47dd3c764275a216LL, 0xa5));
+ // Report the root DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x15f0e06bdfe3c372LL,
+ (DwarfTag) 0xf5d60c59));
+ die_dispatcher.ProcessAttributeSigned(0x15f0e06bdfe3c372LL,
+ (DwarfAttribute) 0xf779a642,
+ (DwarfForm) 0x2cb63027,
+ 0x18e744661769d08fLL);
+
+ // First child DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x149f644f8116fe8cLL,
+ (DwarfTag) 0xac2cbd8c));
+ die_dispatcher.ProcessAttributeSigned(0x149f644f8116fe8cLL,
+ (DwarfAttribute) 0xa6fd6f65,
+ (DwarfForm) 0xe4f64c41,
+ 0x1b04e5444a55fe67LL);
+
+ // First grandchild DIE. Will be skipped.
+ {
+ EXPECT_FALSE(die_dispatcher.StartDIE(0xd68de1ee0bd29419LL,
+ (DwarfTag) 0x22f05a15));
+ // First great-grandchild DIE. Will be skipped without being
+ // mentioned to any handler.
+ {
+ EXPECT_FALSE(die_dispatcher
+ .StartDIE(0xb3076285d25cac25LL,
+ (DwarfTag) 0xcff4061b));
+ die_dispatcher.EndDIE(0xb3076285d25cac25LL);
+ }
+ die_dispatcher.EndDIE(0xd68de1ee0bd29419LL);
+ }
+ die_dispatcher.EndDIE(0x149f644f8116fe8cLL);
+ }
+
+ // Second child DIE. Root handler will decline to find a handler for it.
+ {
+ EXPECT_FALSE(die_dispatcher.StartDIE(0x97412be24875de9dLL,
+ (DwarfTag) 0x505a068b));
+ die_dispatcher.EndDIE(0x97412be24875de9dLL);
+ }
+
+ // Third child DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x753c964c8ab538aeLL,
+ (DwarfTag) 0x8c22970e));
+ die_dispatcher.ProcessAttributeSigned(0x753c964c8ab538aeLL,
+ (DwarfAttribute) 0x4e2b7cfb,
+ (DwarfForm) 0x610b7ae1,
+ 0x3ea5c609d7d7560fLL);
+ die_dispatcher.EndDIE(0x753c964c8ab538aeLL);
+ }
+
+ // Finish the root DIE (and thus the CU).
+ die_dispatcher.EndDIE(0x15f0e06bdfe3c372LL);
+ }
+}
+
+// The DIEDispatcher destructor is supposed to delete all handlers on
+// the stack, except for the root.
+TEST(Dwarf2DIEHandler, FreeHandlersOnStack) {
+ MockRootDIEHandler mock_root_handler;
+ MockDIEHandler *mock_child_handler = new(MockDIEHandler);
+ MockDIEHandler *mock_grandchild_handler = new(MockDIEHandler);
+
+ {
+ InSequence s;
+
+ // We'll like the compilation unit header.
+ EXPECT_CALL(mock_root_handler,
+ StartCompilationUnit(0x87b41ba8381cd71cLL, 0xff, 0x89,
+ 0x76d392ff393ddda2LL, 0xbf))
+ .WillOnce(Return(true));
+
+ // Root DIE.
+ {
+ EXPECT_CALL(mock_root_handler,
+ StartRootDIE(0xbf13b761691ddc91LL, (DwarfTag) 0x98980361))
+ .WillOnce(Return(true));
+ EXPECT_CALL(mock_root_handler, EndAttributes())
+ .WillOnce(Return(true));
+
+ // Child DIE.
+ EXPECT_CALL(mock_root_handler,
+ FindChildHandler(0x058f09240c5fc8c9LL,
+ (DwarfTag) 0x898bf0d0))
+ .WillOnce(Return(mock_child_handler));
+ {
+ EXPECT_CALL(*mock_child_handler, EndAttributes())
+ .WillOnce(Return(true));
+
+ // Grandchild DIE.
+ EXPECT_CALL(*mock_child_handler,
+ FindChildHandler(0x32dc00c9945dc0c8LL,
+ (DwarfTag) 0x2802d007))
+ .WillOnce(Return(mock_grandchild_handler));
+ {
+ EXPECT_CALL(*mock_grandchild_handler,
+ ProcessAttributeSigned((DwarfAttribute) 0x4e2b7cfb,
+ (DwarfForm) 0x610b7ae1,
+ 0x3ea5c609d7d7560fLL))
+ .WillOnce(Return());
+
+ // At this point, we abandon the traversal, so none of the
+ // usual stuff should get called.
+ EXPECT_CALL(*mock_grandchild_handler, EndAttributes())
+ .Times(0);
+ EXPECT_CALL(*mock_grandchild_handler, Finish())
+ .Times(0);
+ }
+
+ EXPECT_CALL(*mock_child_handler, Finish())
+ .Times(0);
+ }
+
+ EXPECT_CALL(mock_root_handler, Finish())
+ .Times(0);
+ }
+ }
+
+ // The dispatcher.
+ DIEDispatcher die_dispatcher(&mock_root_handler);
+
+ // Report the CU header.
+ EXPECT_TRUE(die_dispatcher
+ .StartCompilationUnit(0x87b41ba8381cd71cLL, 0xff, 0x89,
+ 0x76d392ff393ddda2LL, 0xbf));
+ // Report the root DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0xbf13b761691ddc91LL,
+ (DwarfTag) 0x98980361));
+
+ // Child DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x058f09240c5fc8c9LL,
+ (DwarfTag) 0x898bf0d0));
+
+ // Grandchild DIE.
+ {
+ EXPECT_TRUE(die_dispatcher.StartDIE(0x32dc00c9945dc0c8LL,
+ (DwarfTag) 0x2802d007));
+ die_dispatcher.ProcessAttributeSigned(0x32dc00c9945dc0c8LL,
+ (DwarfAttribute) 0x4e2b7cfb,
+ (DwarfForm) 0x610b7ae1,
+ 0x3ea5c609d7d7560fLL);
+
+ // Stop the traversal abruptly, so that there will still be
+ // handlers on the stack when the dispatcher is destructed.
+
+ // No EndDIE call...
+ }
+ // No EndDIE call...
+ }
+ // No EndDIE call...
+ }
+}
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2enums.h b/3rdParty/Breakpad/src/common/dwarf/dwarf2enums.h
index 5565d66..4316a89 100644
--- a/3rdParty/Breakpad/src/common/dwarf/dwarf2enums.h
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2enums.h
@@ -149,7 +149,10 @@ enum DwarfForm {
DW_FORM_sec_offset = 0x17,
DW_FORM_exprloc = 0x18,
DW_FORM_flag_present = 0x19,
- DW_FORM_ref_sig8 = 0x20
+ DW_FORM_ref_sig8 = 0x20,
+ // Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission.
+ DW_FORM_GNU_addr_index = 0x1f01,
+ DW_FORM_GNU_str_index = 0x1f02
};
// Attribute names and codes
@@ -229,6 +232,8 @@ enum DwarfAttribute {
DW_AT_call_column = 0x57,
DW_AT_call_file = 0x58,
DW_AT_call_line = 0x59,
+ // DWARF 4
+ DW_AT_linkage_name = 0x6e,
// SGI/MIPS extensions.
DW_AT_MIPS_fde = 0x2001,
DW_AT_MIPS_loop_begin = 0x2002,
@@ -264,6 +269,13 @@ enum DwarfAttribute {
DW_AT_body_begin = 0x2105,
DW_AT_body_end = 0x2106,
DW_AT_GNU_vector = 0x2107,
+ // Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission.
+ DW_AT_GNU_dwo_name = 0x2130,
+ DW_AT_GNU_dwo_id = 0x2131,
+ DW_AT_GNU_ranges_base = 0x2132,
+ DW_AT_GNU_addr_base = 0x2133,
+ DW_AT_GNU_pubnames = 0x2134,
+ DW_AT_GNU_pubtypes = 0x2135,
// VMS extensions.
DW_AT_VMS_rtnbeg_pd_address = 0x2201,
// UPC extension.
@@ -489,9 +501,24 @@ enum DwarfOpcode {
DW_OP_call_frame_cfa =0x9c,
DW_OP_bit_piece =0x9d,
DW_OP_lo_user =0xe0,
- DW_OP_hi_user =0xff,
+ DW_OP_hi_user =0xff,
// GNU extensions
- DW_OP_GNU_push_tls_address =0xe0
+ DW_OP_GNU_push_tls_address =0xe0,
+ // Extensions for Fission. See http://gcc.gnu.org/wiki/DebugFission.
+ DW_OP_GNU_addr_index =0xfb,
+ DW_OP_GNU_const_index =0xfc
+};
+
+// Section identifiers for DWP files
+enum DwarfSectionId {
+ DW_SECT_INFO = 1,
+ DW_SECT_TYPES = 2,
+ DW_SECT_ABBREV = 3,
+ DW_SECT_LINE = 4,
+ DW_SECT_LOC = 5,
+ DW_SECT_STR_OFFSETS = 6,
+ DW_SECT_MACINFO = 7,
+ DW_SECT_MACRO = 8
};
// Source languages. These are values for DW_AT_language.
@@ -517,6 +544,8 @@ enum DwarfLanguage
DW_LANG_ObjC_plus_plus =0x0011,
DW_LANG_UPC =0x0012,
DW_LANG_D =0x0013,
+ DW_LANG_Rust =0x001c,
+ DW_LANG_Swift =0x001e,
// Implementation-defined language code range.
DW_LANG_lo_user = 0x8000,
DW_LANG_hi_user = 0xffff,
@@ -643,7 +672,7 @@ enum DwarfPointerEncoding
// encoding (except DW_EH_PE_aligned), and indicates that the
// encoded value represents the address at which the true address
// is stored, not the true address itself.
- DW_EH_PE_indirect = 0x80
+ DW_EH_PE_indirect = 0x80
};
} // namespace dwarf2reader
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.cc b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.cc
index 7c1a29d..8774122 100644
--- a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.cc
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.cc
@@ -44,6 +44,8 @@
#include <string>
#include <utility>
+#include <sys/stat.h>
+
#include "common/dwarf/bytereader-inl.h"
#include "common/dwarf/bytereader.h"
#include "common/dwarf/line_state_machine.h"
@@ -51,11 +53,38 @@
namespace dwarf2reader {
-CompilationUnit::CompilationUnit(const SectionMap& sections, uint64 offset,
+CompilationUnit::CompilationUnit(const string& path,
+ const SectionMap& sections, uint64 offset,
ByteReader* reader, Dwarf2Handler* handler)
- : offset_from_section_start_(offset), reader_(reader),
- sections_(sections), handler_(handler), abbrevs_(NULL),
- string_buffer_(NULL), string_buffer_length_(0) {}
+ : path_(path), offset_from_section_start_(offset), reader_(reader),
+ sections_(sections), handler_(handler), abbrevs_(),
+ string_buffer_(NULL), string_buffer_length_(0),
+ str_offsets_buffer_(NULL), str_offsets_buffer_length_(0),
+ addr_buffer_(NULL), addr_buffer_length_(0),
+ is_split_dwarf_(false), dwo_id_(0), dwo_name_(),
+ skeleton_dwo_id_(0), ranges_base_(0), addr_base_(0),
+ have_checked_for_dwp_(false), dwp_path_(),
+ dwp_byte_reader_(), dwp_reader_() {}
+
+// Initialize a compilation unit from a .dwo or .dwp file.
+// In this case, we need the .debug_addr section from the
+// executable file that contains the corresponding skeleton
+// compilation unit. We also inherit the Dwarf2Handler from
+// the executable file, and call it as if we were still
+// processing the original compilation unit.
+
+void CompilationUnit::SetSplitDwarf(const uint8_t* addr_buffer,
+ uint64 addr_buffer_length,
+ uint64 addr_base,
+ uint64 ranges_base,
+ uint64 dwo_id) {
+ is_split_dwarf_ = true;
+ addr_buffer_ = addr_buffer;
+ addr_buffer_length_ = addr_buffer_length;
+ addr_base_ = addr_base;
+ ranges_base_ = ranges_base;
+ skeleton_dwo_id_ = dwo_id;
+}
// Read a DWARF2/3 abbreviation section.
// Each abbrev consists of a abbreviation number, a tag, a byte
@@ -83,9 +112,9 @@ void CompilationUnit::ReadAbbrevs() {
// The only way to check whether we are reading over the end of the
// buffer would be to first compute the size of the leb128 data by
// reading it, then go back and read it again.
- const char* abbrev_start = iter->second.first +
+ const uint8_t *abbrev_start = iter->second.first +
header_.abbrev_offset;
- const char* abbrevptr = abbrev_start;
+ const uint8_t *abbrevptr = abbrev_start;
#ifndef NDEBUG
const uint64 abbrev_length = iter->second.second - header_.abbrev_offset;
#endif
@@ -132,8 +161,8 @@ void CompilationUnit::ReadAbbrevs() {
}
// Skips a single DIE's attributes.
-const char* CompilationUnit::SkipDIE(const char* start,
- const Abbrev& abbrev) {
+const uint8_t *CompilationUnit::SkipDIE(const uint8_t* start,
+ const Abbrev& abbrev) {
for (AttributeList::const_iterator i = abbrev.attributes.begin();
i != abbrev.attributes.end();
i++) {
@@ -143,8 +172,8 @@ const char* CompilationUnit::SkipDIE(const char* start,
}
// Skips a single attribute form's data.
-const char* CompilationUnit::SkipAttribute(const char* start,
- enum DwarfForm form) {
+const uint8_t *CompilationUnit::SkipAttribute(const uint8_t *start,
+ enum DwarfForm form) {
size_t len;
switch (form) {
@@ -171,9 +200,11 @@ const char* CompilationUnit::SkipAttribute(const char* start,
case DW_FORM_ref_sig8:
return start + 8;
case DW_FORM_string:
- return start + strlen(start) + 1;
+ return start + strlen(reinterpret_cast<const char *>(start)) + 1;
case DW_FORM_udata:
case DW_FORM_ref_udata:
+ case DW_FORM_GNU_str_index:
+ case DW_FORM_GNU_addr_index:
reader_->ReadUnsignedLEB128(start, &len);
return start + len;
@@ -183,14 +214,15 @@ const char* CompilationUnit::SkipAttribute(const char* start,
case DW_FORM_addr:
return start + reader_->AddressSize();
case DW_FORM_ref_addr:
- // DWARF2 and 3 differ on whether ref_addr is address size or
+ // DWARF2 and 3/4 differ on whether ref_addr is address size or
// offset size.
- assert(header_.version == 2 || header_.version == 3);
+ assert(header_.version >= 2);
if (header_.version == 2) {
return start + reader_->AddressSize();
- } else if (header_.version == 3) {
+ } else if (header_.version >= 3) {
return start + reader_->OffsetSize();
}
+ break;
case DW_FORM_block1:
return start + 1 + reader_->ReadOneByte(start);
@@ -217,7 +249,7 @@ const char* CompilationUnit::SkipAttribute(const char* start,
// the offset in the .debug_abbrev section for our abbrevs, and an
// address size.
void CompilationUnit::ReadHeader() {
- const char* headerptr = buffer_;
+ const uint8_t *headerptr = buffer_;
size_t initial_length_size;
assert(headerptr + 4 < buffer_ + buffer_length_);
@@ -234,7 +266,9 @@ void CompilationUnit::ReadHeader() {
header_.abbrev_offset = reader_->ReadOffset(headerptr);
headerptr += reader_->OffsetSize();
- assert(headerptr + 1 < buffer_ + buffer_length_);
+ // Compare against less than or equal because this may be the last
+ // section in the file.
+ assert(headerptr + 1 <= buffer_ + buffer_length_);
header_.address_size = reader_->ReadOneByte(headerptr);
reader_->SetAddressSize(header_.address_size);
headerptr += 1;
@@ -295,17 +329,39 @@ uint64 CompilationUnit::Start() {
string_buffer_length_ = iter->second.second;
}
+ // Set the string offsets section if we have one.
+ iter = sections_.find(".debug_str_offsets");
+ if (iter != sections_.end()) {
+ str_offsets_buffer_ = iter->second.first;
+ str_offsets_buffer_length_ = iter->second.second;
+ }
+
+ // Set the address section if we have one.
+ iter = sections_.find(".debug_addr");
+ if (iter != sections_.end()) {
+ addr_buffer_ = iter->second.first;
+ addr_buffer_length_ = iter->second.second;
+ }
+
// Now that we have our abbreviations, start processing DIE's.
ProcessDIEs();
+ // If this is a skeleton compilation unit generated with split DWARF,
+ // and the client needs the full debug info, we need to find the full
+ // compilation unit in a .dwo or .dwp file.
+ if (!is_split_dwarf_
+ && dwo_name_ != NULL
+ && handler_->NeedSplitDebugInfo())
+ ProcessSplitDwarf();
+
return ourlength;
}
// If one really wanted, you could merge SkipAttribute and
// ProcessAttribute
// This is all boring data manipulation and calling of the handler.
-const char* CompilationUnit::ProcessAttribute(
- uint64 dieoffset, const char* start, enum DwarfAttribute attr,
+const uint8_t *CompilationUnit::ProcessAttribute(
+ uint64 dieoffset, const uint8_t *start, enum DwarfAttribute attr,
enum DwarfForm form) {
size_t len;
@@ -319,48 +375,46 @@ const char* CompilationUnit::ProcessAttribute(
return ProcessAttribute(dieoffset, start, attr, form);
case DW_FORM_flag_present:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form, 1);
+ ProcessAttributeUnsigned(dieoffset, attr, form, 1);
return start;
case DW_FORM_data1:
case DW_FORM_flag:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadOneByte(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadOneByte(start));
return start + 1;
case DW_FORM_data2:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadTwoBytes(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadTwoBytes(start));
return start + 2;
case DW_FORM_data4:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadFourBytes(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadFourBytes(start));
return start + 4;
case DW_FORM_data8:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadEightBytes(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadEightBytes(start));
return start + 8;
case DW_FORM_string: {
- const char* str = start;
- handler_->ProcessAttributeString(dieoffset, attr, form,
- str);
+ const char *str = reinterpret_cast<const char *>(start);
+ ProcessAttributeString(dieoffset, attr, form, str);
return start + strlen(str) + 1;
}
case DW_FORM_udata:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadUnsignedLEB128(start,
- &len));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadUnsignedLEB128(start, &len));
return start + len;
case DW_FORM_sdata:
- handler_->ProcessAttributeSigned(dieoffset, attr, form,
- reader_->ReadSignedLEB128(start, &len));
+ ProcessAttributeSigned(dieoffset, attr, form,
+ reader_->ReadSignedLEB128(start, &len));
return start + len;
case DW_FORM_addr:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadAddress(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadAddress(start));
return start + reader_->AddressSize();
case DW_FORM_sec_offset:
- handler_->ProcessAttributeUnsigned(dieoffset, attr, form,
- reader_->ReadOffset(start));
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadOffset(start));
return start + reader_->OffsetSize();
case DW_FORM_ref1:
@@ -390,14 +444,14 @@ const char* CompilationUnit::ProcessAttribute(
+ offset_from_section_start_);
return start + len;
case DW_FORM_ref_addr:
- // DWARF2 and 3 differ on whether ref_addr is address size or
+ // DWARF2 and 3/4 differ on whether ref_addr is address size or
// offset size.
- assert(header_.version == 2 || header_.version == 3);
+ assert(header_.version >= 2);
if (header_.version == 2) {
handler_->ProcessAttributeReference(dieoffset, attr, form,
reader_->ReadAddress(start));
return start + reader_->AddressSize();
- } else if (header_.version == 3) {
+ } else if (header_.version >= 3) {
handler_->ProcessAttributeReference(dieoffset, attr, form,
reader_->ReadOffset(start));
return start + reader_->OffsetSize();
@@ -439,34 +493,66 @@ const char* CompilationUnit::ProcessAttribute(
const uint64 offset = reader_->ReadOffset(start);
assert(string_buffer_ + offset < string_buffer_ + string_buffer_length_);
- const char* str = string_buffer_ + offset;
- handler_->ProcessAttributeString(dieoffset, attr, form,
- str);
+ const char *str = reinterpret_cast<const char *>(string_buffer_ + offset);
+ ProcessAttributeString(dieoffset, attr, form, str);
return start + reader_->OffsetSize();
}
+
+ case DW_FORM_GNU_str_index: {
+ uint64 str_index = reader_->ReadUnsignedLEB128(start, &len);
+ const uint8_t* offset_ptr =
+ str_offsets_buffer_ + str_index * reader_->OffsetSize();
+ const uint64 offset = reader_->ReadOffset(offset_ptr);
+ if (offset >= string_buffer_length_) {
+ return NULL;
+ }
+
+ const char* str = reinterpret_cast<const char *>(string_buffer_) + offset;
+ ProcessAttributeString(dieoffset, attr, form, str);
+ return start + len;
+ break;
+ }
+ case DW_FORM_GNU_addr_index: {
+ uint64 addr_index = reader_->ReadUnsignedLEB128(start, &len);
+ const uint8_t* addr_ptr =
+ addr_buffer_ + addr_base_ + addr_index * reader_->AddressSize();
+ ProcessAttributeUnsigned(dieoffset, attr, form,
+ reader_->ReadAddress(addr_ptr));
+ return start + len;
+ }
}
fprintf(stderr, "Unhandled form type\n");
return NULL;
}
-const char* CompilationUnit::ProcessDIE(uint64 dieoffset,
- const char* start,
- const Abbrev& abbrev) {
+const uint8_t *CompilationUnit::ProcessDIE(uint64 dieoffset,
+ const uint8_t *start,
+ const Abbrev& abbrev) {
for (AttributeList::const_iterator i = abbrev.attributes.begin();
i != abbrev.attributes.end();
i++) {
start = ProcessAttribute(dieoffset, start, i->first, i->second);
}
+
+ // If this is a compilation unit in a split DWARF object, verify that
+ // the dwo_id matches. If it does not match, we will ignore this
+ // compilation unit.
+ if (abbrev.tag == DW_TAG_compile_unit
+ && is_split_dwarf_
+ && dwo_id_ != skeleton_dwo_id_) {
+ return NULL;
+ }
+
return start;
}
void CompilationUnit::ProcessDIEs() {
- const char* dieptr = after_header_;
+ const uint8_t *dieptr = after_header_;
size_t len;
// lengthstart is the place the length field is based on.
// It is the point in the header after the initial length field
- const char* lengthstart = buffer_;
+ const uint8_t *lengthstart = buffer_;
// In 64 bit dwarf, the initial length is 12 bytes, because of the
// 0xffffffff at the start.
@@ -500,7 +586,7 @@ void CompilationUnit::ProcessDIEs() {
const Abbrev& abbrev = abbrevs_->at(static_cast<size_t>(abbrev_num));
const enum DwarfTag tag = abbrev.tag;
- if (!handler_->StartDIE(absolute_offset, tag, abbrev.attributes)) {
+ if (!handler_->StartDIE(absolute_offset, tag)) {
dieptr = SkipDIE(dieptr, abbrev);
} else {
dieptr = ProcessDIE(absolute_offset, dieptr, abbrev);
@@ -514,10 +600,313 @@ void CompilationUnit::ProcessDIEs() {
}
}
-LineInfo::LineInfo(const char* buffer, uint64 buffer_length,
+// Check for a valid ELF file and return the Address size.
+// Returns 0 if not a valid ELF file.
+inline int GetElfWidth(const ElfReader& elf) {
+ if (elf.IsElf32File())
+ return 4;
+ if (elf.IsElf64File())
+ return 8;
+ return 0;
+}
+
+void CompilationUnit::ProcessSplitDwarf() {
+ struct stat statbuf;
+ if (!have_checked_for_dwp_) {
+ // Look for a .dwp file in the same directory as the executable.
+ have_checked_for_dwp_ = true;
+ string dwp_suffix(".dwp");
+ dwp_path_ = path_ + dwp_suffix;
+ if (stat(dwp_path_.c_str(), &statbuf) != 0) {
+ // Fall back to a split .debug file in the same directory.
+ string debug_suffix(".debug");
+ dwp_path_ = path_;
+ size_t found = path_.rfind(debug_suffix);
+ if (found + debug_suffix.length() == path_.length())
+ dwp_path_ = dwp_path_.replace(found, debug_suffix.length(), dwp_suffix);
+ }
+ if (stat(dwp_path_.c_str(), &statbuf) == 0) {
+ ElfReader* elf = new ElfReader(dwp_path_);
+ int width = GetElfWidth(*elf);
+ if (width != 0) {
+ dwp_byte_reader_.reset(new ByteReader(reader_->GetEndianness()));
+ dwp_byte_reader_->SetAddressSize(width);
+ dwp_reader_.reset(new DwpReader(*dwp_byte_reader_, elf));
+ dwp_reader_->Initialize();
+ } else {
+ delete elf;
+ }
+ }
+ }
+ bool found_in_dwp = false;
+ if (dwp_reader_) {
+ // If we have a .dwp file, read the debug sections for the requested CU.
+ SectionMap sections;
+ dwp_reader_->ReadDebugSectionsForCU(dwo_id_, &sections);
+ if (!sections.empty()) {
+ found_in_dwp = true;
+ CompilationUnit dwp_comp_unit(dwp_path_, sections, 0,
+ dwp_byte_reader_.get(), handler_);
+ dwp_comp_unit.SetSplitDwarf(addr_buffer_, addr_buffer_length_, addr_base_,
+ ranges_base_, dwo_id_);
+ dwp_comp_unit.Start();
+ }
+ }
+ if (!found_in_dwp) {
+ // If no .dwp file, try to open the .dwo file.
+ if (stat(dwo_name_, &statbuf) == 0) {
+ ElfReader elf(dwo_name_);
+ int width = GetElfWidth(elf);
+ if (width != 0) {
+ ByteReader reader(ENDIANNESS_LITTLE);
+ reader.SetAddressSize(width);
+ SectionMap sections;
+ ReadDebugSectionsFromDwo(&elf, &sections);
+ CompilationUnit dwo_comp_unit(dwo_name_, sections, 0, &reader,
+ handler_);
+ dwo_comp_unit.SetSplitDwarf(addr_buffer_, addr_buffer_length_,
+ addr_base_, ranges_base_, dwo_id_);
+ dwo_comp_unit.Start();
+ }
+ }
+ }
+}
+
+void CompilationUnit::ReadDebugSectionsFromDwo(ElfReader* elf_reader,
+ SectionMap* sections) {
+ static const char* const section_names[] = {
+ ".debug_abbrev",
+ ".debug_info",
+ ".debug_str_offsets",
+ ".debug_str"
+ };
+ for (unsigned int i = 0u;
+ i < sizeof(section_names)/sizeof(*(section_names)); ++i) {
+ string base_name = section_names[i];
+ string dwo_name = base_name + ".dwo";
+ size_t section_size;
+ const char* section_data = elf_reader->GetSectionByName(dwo_name,
+ &section_size);
+ if (section_data != NULL)
+ sections->insert(std::make_pair(
+ base_name, std::make_pair(
+ reinterpret_cast<const uint8_t *>(section_data),
+ section_size)));
+ }
+}
+
+DwpReader::DwpReader(const ByteReader& byte_reader, ElfReader* elf_reader)
+ : elf_reader_(elf_reader), byte_reader_(byte_reader),
+ cu_index_(NULL), cu_index_size_(0), string_buffer_(NULL),
+ string_buffer_size_(0), version_(0), ncolumns_(0), nunits_(0),
+ nslots_(0), phash_(NULL), pindex_(NULL), shndx_pool_(NULL),
+ offset_table_(NULL), size_table_(NULL), abbrev_data_(NULL),
+ abbrev_size_(0), info_data_(NULL), info_size_(0),
+ str_offsets_data_(NULL), str_offsets_size_(0) {}
+
+DwpReader::~DwpReader() {
+ if (elf_reader_) delete elf_reader_;
+}
+
+void DwpReader::Initialize() {
+ cu_index_ = elf_reader_->GetSectionByName(".debug_cu_index",
+ &cu_index_size_);
+ if (cu_index_ == NULL) {
+ return;
+ }
+ // The .debug_str.dwo section is shared by all CUs in the file.
+ string_buffer_ = elf_reader_->GetSectionByName(".debug_str.dwo",
+ &string_buffer_size_);
+
+ version_ = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(cu_index_));
+
+ if (version_ == 1) {
+ nslots_ = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(cu_index_)
+ + 3 * sizeof(uint32));
+ phash_ = cu_index_ + 4 * sizeof(uint32);
+ pindex_ = phash_ + nslots_ * sizeof(uint64);
+ shndx_pool_ = pindex_ + nslots_ * sizeof(uint32);
+ if (shndx_pool_ >= cu_index_ + cu_index_size_) {
+ version_ = 0;
+ }
+ } else if (version_ == 2) {
+ ncolumns_ = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(cu_index_) + sizeof(uint32));
+ nunits_ = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(cu_index_) + 2 * sizeof(uint32));
+ nslots_ = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(cu_index_) + 3 * sizeof(uint32));
+ phash_ = cu_index_ + 4 * sizeof(uint32);
+ pindex_ = phash_ + nslots_ * sizeof(uint64);
+ offset_table_ = pindex_ + nslots_ * sizeof(uint32);
+ size_table_ = offset_table_ + ncolumns_ * (nunits_ + 1) * sizeof(uint32);
+ abbrev_data_ = elf_reader_->GetSectionByName(".debug_abbrev.dwo",
+ &abbrev_size_);
+ info_data_ = elf_reader_->GetSectionByName(".debug_info.dwo", &info_size_);
+ str_offsets_data_ = elf_reader_->GetSectionByName(".debug_str_offsets.dwo",
+ &str_offsets_size_);
+ if (size_table_ >= cu_index_ + cu_index_size_) {
+ version_ = 0;
+ }
+ }
+}
+
+void DwpReader::ReadDebugSectionsForCU(uint64 dwo_id,
+ SectionMap* sections) {
+ if (version_ == 1) {
+ int slot = LookupCU(dwo_id);
+ if (slot == -1) {
+ return;
+ }
+
+ // The index table points to the section index pool, where we
+ // can read a list of section indexes for the debug sections
+ // for the CU whose dwo_id we are looking for.
+ int index = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(pindex_)
+ + slot * sizeof(uint32));
+ const char* shndx_list = shndx_pool_ + index * sizeof(uint32);
+ for (;;) {
+ if (shndx_list >= cu_index_ + cu_index_size_) {
+ version_ = 0;
+ return;
+ }
+ unsigned int shndx = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(shndx_list));
+ shndx_list += sizeof(uint32);
+ if (shndx == 0)
+ break;
+ const char* section_name = elf_reader_->GetSectionName(shndx);
+ size_t section_size;
+ const char* section_data;
+ // We're only interested in these four debug sections.
+ // The section names in the .dwo file end with ".dwo", but we
+ // add them to the sections table with their normal names.
+ if (!strncmp(section_name, ".debug_abbrev", strlen(".debug_abbrev"))) {
+ section_data = elf_reader_->GetSectionByIndex(shndx, &section_size);
+ sections->insert(std::make_pair(
+ ".debug_abbrev",
+ std::make_pair(reinterpret_cast<const uint8_t *> (section_data),
+ section_size)));
+ } else if (!strncmp(section_name, ".debug_info", strlen(".debug_info"))) {
+ section_data = elf_reader_->GetSectionByIndex(shndx, &section_size);
+ sections->insert(std::make_pair(
+ ".debug_info",
+ std::make_pair(reinterpret_cast<const uint8_t *> (section_data),
+ section_size)));
+ } else if (!strncmp(section_name, ".debug_str_offsets",
+ strlen(".debug_str_offsets"))) {
+ section_data = elf_reader_->GetSectionByIndex(shndx, &section_size);
+ sections->insert(std::make_pair(
+ ".debug_str_offsets",
+ std::make_pair(reinterpret_cast<const uint8_t *> (section_data),
+ section_size)));
+ }
+ }
+ sections->insert(std::make_pair(
+ ".debug_str",
+ std::make_pair(reinterpret_cast<const uint8_t *> (string_buffer_),
+ string_buffer_size_)));
+ } else if (version_ == 2) {
+ uint32 index = LookupCUv2(dwo_id);
+ if (index == 0) {
+ return;
+ }
+
+ // The index points to a row in each of the section offsets table
+ // and the section size table, where we can read the offsets and sizes
+ // of the contributions to each debug section from the CU whose dwo_id
+ // we are looking for. Row 0 of the section offsets table has the
+ // section ids for each column of the table. The size table begins
+ // with row 1.
+ const char* id_row = offset_table_;
+ const char* offset_row = offset_table_
+ + index * ncolumns_ * sizeof(uint32);
+ const char* size_row =
+ size_table_ + (index - 1) * ncolumns_ * sizeof(uint32);
+ if (size_row + ncolumns_ * sizeof(uint32) > cu_index_ + cu_index_size_) {
+ version_ = 0;
+ return;
+ }
+ for (unsigned int col = 0u; col < ncolumns_; ++col) {
+ uint32 section_id =
+ byte_reader_.ReadFourBytes(reinterpret_cast<const uint8_t *>(id_row)
+ + col * sizeof(uint32));
+ uint32 offset = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(offset_row)
+ + col * sizeof(uint32));
+ uint32 size = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(size_row) + col * sizeof(uint32));
+ if (section_id == DW_SECT_ABBREV) {
+ sections->insert(std::make_pair(
+ ".debug_abbrev",
+ std::make_pair(reinterpret_cast<const uint8_t *> (abbrev_data_)
+ + offset, size)));
+ } else if (section_id == DW_SECT_INFO) {
+ sections->insert(std::make_pair(
+ ".debug_info",
+ std::make_pair(reinterpret_cast<const uint8_t *> (info_data_)
+ + offset, size)));
+ } else if (section_id == DW_SECT_STR_OFFSETS) {
+ sections->insert(std::make_pair(
+ ".debug_str_offsets",
+ std::make_pair(reinterpret_cast<const uint8_t *> (str_offsets_data_)
+ + offset, size)));
+ }
+ }
+ sections->insert(std::make_pair(
+ ".debug_str",
+ std::make_pair(reinterpret_cast<const uint8_t *> (string_buffer_),
+ string_buffer_size_)));
+ }
+}
+
+int DwpReader::LookupCU(uint64 dwo_id) {
+ uint32 slot = static_cast<uint32>(dwo_id) & (nslots_ - 1);
+ uint64 probe = byte_reader_.ReadEightBytes(
+ reinterpret_cast<const uint8_t *>(phash_) + slot * sizeof(uint64));
+ if (probe != 0 && probe != dwo_id) {
+ uint32 secondary_hash =
+ (static_cast<uint32>(dwo_id >> 32) & (nslots_ - 1)) | 1;
+ do {
+ slot = (slot + secondary_hash) & (nslots_ - 1);
+ probe = byte_reader_.ReadEightBytes(
+ reinterpret_cast<const uint8_t *>(phash_) + slot * sizeof(uint64));
+ } while (probe != 0 && probe != dwo_id);
+ }
+ if (probe == 0)
+ return -1;
+ return slot;
+}
+
+uint32 DwpReader::LookupCUv2(uint64 dwo_id) {
+ uint32 slot = static_cast<uint32>(dwo_id) & (nslots_ - 1);
+ uint64 probe = byte_reader_.ReadEightBytes(
+ reinterpret_cast<const uint8_t *>(phash_) + slot * sizeof(uint64));
+ uint32 index = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(pindex_) + slot * sizeof(uint32));
+ if (index != 0 && probe != dwo_id) {
+ uint32 secondary_hash =
+ (static_cast<uint32>(dwo_id >> 32) & (nslots_ - 1)) | 1;
+ do {
+ slot = (slot + secondary_hash) & (nslots_ - 1);
+ probe = byte_reader_.ReadEightBytes(
+ reinterpret_cast<const uint8_t *>(phash_) + slot * sizeof(uint64));
+ index = byte_reader_.ReadFourBytes(
+ reinterpret_cast<const uint8_t *>(pindex_) + slot * sizeof(uint32));
+ } while (index != 0 && probe != dwo_id);
+ }
+ return index;
+}
+
+LineInfo::LineInfo(const uint8_t *buffer, uint64 buffer_length,
ByteReader* reader, LineInfoHandler* handler):
- handler_(handler), reader_(reader), buffer_(buffer),
- buffer_length_(buffer_length) {
+ handler_(handler), reader_(reader), buffer_(buffer) {
+#ifndef NDEBUG
+ buffer_length_ = buffer_length;
+#endif
header_.std_opcode_lengths = NULL;
}
@@ -530,7 +919,7 @@ uint64 LineInfo::Start() {
// The header for a debug_line section is mildly complicated, because
// the line info is very tightly encoded.
void LineInfo::ReadHeader() {
- const char* lineptr = buffer_;
+ const uint8_t *lineptr = buffer_;
size_t initial_length_size;
const uint64 initial_length
@@ -553,6 +942,13 @@ void LineInfo::ReadHeader() {
header_.min_insn_length = reader_->ReadOneByte(lineptr);
lineptr += 1;
+ if (header_.version >= 4) {
+ __attribute__((unused)) uint8 max_ops_per_insn =
+ reader_->ReadOneByte(lineptr);
+ ++lineptr;
+ assert(max_ops_per_insn == 1);
+ }
+
header_.default_is_stmt = reader_->ReadOneByte(lineptr);
lineptr += 1;
@@ -577,7 +973,7 @@ void LineInfo::ReadHeader() {
if (*lineptr) {
uint32 dirindex = 1;
while (*lineptr) {
- const char* dirname = lineptr;
+ const char *dirname = reinterpret_cast<const char *>(lineptr);
handler_->DefineDir(dirname, dirindex);
lineptr += strlen(dirname) + 1;
dirindex++;
@@ -590,7 +986,7 @@ void LineInfo::ReadHeader() {
uint32 fileindex = 1;
size_t len;
while (*lineptr) {
- const char* filename = lineptr;
+ const char *filename = reinterpret_cast<const char *>(lineptr);
lineptr += strlen(filename) + 1;
uint64 dirindex = reader_->ReadUnsignedLEB128(lineptr, &len);
@@ -615,7 +1011,7 @@ void LineInfo::ReadHeader() {
bool LineInfo::ProcessOneOpcode(ByteReader* reader,
LineInfoHandler* handler,
const struct LineInfoHeader &header,
- const char* start,
+ const uint8_t *start,
struct LineStateMachine* lsm,
size_t* len,
uintptr pc,
@@ -756,7 +1152,7 @@ bool LineInfo::ProcessOneOpcode(ByteReader* reader,
}
break;
case DW_LNE_define_file: {
- const char* filename = start;
+ const char *filename = reinterpret_cast<const char *>(start);
templen = strlen(filename) + 1;
start += templen;
@@ -803,7 +1199,7 @@ void LineInfo::ReadLines() {
// lengthstart is the place the length field is based on.
// It is the point in the header after the initial length field
- const char* lengthstart = buffer_;
+ const uint8_t *lengthstart = buffer_;
// In 64 bit dwarf, the initial length is 12 bytes, because of the
// 0xffffffff at the start.
@@ -812,7 +1208,7 @@ void LineInfo::ReadLines() {
else
lengthstart += 4;
- const char* lineptr = after_header_;
+ const uint8_t *lineptr = after_header_;
lsm.Reset(header_.default_is_stmt);
// The LineInfoHandler interface expects each line's length along
@@ -1311,7 +1707,7 @@ class CallFrameInfo::State {
const Entry *entry_;
// The next instruction to process.
- const char *cursor_;
+ const uint8_t *cursor_;
// The current set of rules.
RuleMap rules_;
@@ -1409,7 +1805,8 @@ bool CallFrameInfo::State::ParseOperands(const char *format,
if (len > bytes_left || expression_length > bytes_left - len)
return ReportIncomplete();
cursor_ += len;
- operands->expression = string(cursor_, expression_length);
+ operands->expression = string(reinterpret_cast<const char *>(cursor_),
+ expression_length);
cursor_ += expression_length;
break;
}
@@ -1512,16 +1909,19 @@ bool CallFrameInfo::State::DoInstruction() {
// Change the base register used to compute the CFA.
case DW_CFA_def_cfa_register: {
+ if (!ParseOperands("r", &ops)) return false;
Rule *cfa_rule = rules_.CFARule();
if (!cfa_rule) {
- reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ if (!DoDefCFA(ops.register_number, ops.offset)) {
+ reporter_->NoCFARule(entry_->offset, entry_->kind, CursorOffset());
+ return false;
+ }
+ } else {
+ cfa_rule->SetBaseRegister(ops.register_number);
+ if (!cfa_rule->Handle(handler_, address_,
+ Handler::kCFARegister))
return false;
}
- if (!ParseOperands("r", &ops)) return false;
- cfa_rule->SetBaseRegister(ops.register_number);
- if (!cfa_rule->Handle(handler_, address_,
- Handler::kCFARegister))
- return false;
break;
}
@@ -1759,8 +2159,8 @@ bool CallFrameInfo::State::DoRestore(unsigned reg) {
return DoRule(reg, rule);
}
-bool CallFrameInfo::ReadEntryPrologue(const char *cursor, Entry *entry) {
- const char *buffer_end = buffer_ + buffer_length_;
+bool CallFrameInfo::ReadEntryPrologue(const uint8_t *cursor, Entry *entry) {
+ const uint8_t *buffer_end = buffer_ + buffer_length_;
// Initialize enough of ENTRY for use in error reporting.
entry->offset = cursor - buffer_;
@@ -1838,7 +2238,7 @@ bool CallFrameInfo::ReadEntryPrologue(const char *cursor, Entry *entry) {
}
bool CallFrameInfo::ReadCIEFields(CIE *cie) {
- const char *cursor = cie->fields;
+ const uint8_t *cursor = cie->fields;
size_t len;
assert(cie->kind == kCIE);
@@ -1860,22 +2260,23 @@ bool CallFrameInfo::ReadCIEFields(CIE *cie) {
cursor++;
// If we don't recognize the version, we can't parse any more fields of the
- // CIE. For DWARF CFI, we handle versions 1 through 3 (there was never a
- // version 2 of CFI data). For .eh_frame, we handle versions 1 and 3 as well;
+ // CIE. For DWARF CFI, we handle versions 1 through 4 (there was never a
+ // version 2 of CFI data). For .eh_frame, we handle versions 1 and 4 as well;
// the difference between those versions seems to be the same as for
// .debug_frame.
- if (cie->version < 1 || cie->version > 3) {
+ if (cie->version < 1 || cie->version > 4) {
reporter_->UnrecognizedVersion(cie->offset, cie->version);
return false;
}
- const char *augmentation_start = cursor;
- const void *augmentation_end =
- memchr(augmentation_start, '\0', cie->end - augmentation_start);
+ const uint8_t *augmentation_start = cursor;
+ const uint8_t *augmentation_end =
+ reinterpret_cast<const uint8_t *>(memchr(augmentation_start, '\0',
+ cie->end - augmentation_start));
if (! augmentation_end) return ReportIncomplete(cie);
- cursor = static_cast<const char *>(augmentation_end);
- cie->augmentation = string(augmentation_start,
- cursor - augmentation_start);
+ cursor = augmentation_end;
+ cie->augmentation = string(reinterpret_cast<const char *>(augmentation_start),
+ cursor - augmentation_start);
// Skip the terminating '\0'.
cursor++;
@@ -1893,16 +2294,36 @@ bool CallFrameInfo::ReadCIEFields(CIE *cie) {
}
}
+ if (cie->version >= 4) {
+ uint8_t address_size = *cursor++;
+ if (address_size != 8) {
+ // TODO(scottmg): Only supporting x64 for now.
+ reporter_->UnexpectedAddressSize(cie->offset, address_size);
+ return false;
+ }
+
+ uint8_t segment_size = *cursor++;
+ if (segment_size != 0) {
+ // TODO(scottmg): Only supporting x64 for now.
+ // I would have perhaps expected 4 here, but LLVM emits a 0, near
+ // http://llvm.org/docs/doxygen/html/MCDwarf_8cpp_source.html#l00606. As
+ // we are not using the value, only succeed for now if it's the expected
+ // 0.
+ reporter_->UnexpectedSegmentSize(cie->offset, segment_size);
+ return false;
+ }
+ }
+
// Parse the code alignment factor.
cie->code_alignment_factor = reader_->ReadUnsignedLEB128(cursor, &len);
if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
cursor += len;
-
+
// Parse the data alignment factor.
cie->data_alignment_factor = reader_->ReadSignedLEB128(cursor, &len);
if (size_t(cie->end - cursor) < len) return ReportIncomplete(cie);
cursor += len;
-
+
// Parse the return address register. This is a ubyte in version 1, and
// a ULEB128 in version 3.
if (cie->version == 1) {
@@ -1921,9 +2342,9 @@ bool CallFrameInfo::ReadCIEFields(CIE *cie) {
if (size_t(cie->end - cursor) < len + data_size)
return ReportIncomplete(cie);
cursor += len;
- const char *data = cursor;
+ const uint8_t *data = cursor;
cursor += data_size;
- const char *data_end = cursor;
+ const uint8_t *data_end = cursor;
cie->has_z_lsda = false;
cie->has_z_personality = false;
@@ -2013,9 +2434,9 @@ bool CallFrameInfo::ReadCIEFields(CIE *cie) {
return true;
}
-
+
bool CallFrameInfo::ReadFDEFields(FDE *fde) {
- const char *cursor = fde->fields;
+ const uint8_t *cursor = fde->fields;
size_t size;
fde->address = reader_->ReadEncodedPointer(cursor, fde->cie->pointer_encoding,
@@ -2081,10 +2502,10 @@ bool CallFrameInfo::ReadFDEFields(FDE *fde) {
}
bool CallFrameInfo::Start() {
- const char *buffer_end = buffer_ + buffer_length_;
- const char *cursor;
+ const uint8_t *buffer_end = buffer_ + buffer_length_;
+ const uint8_t *cursor;
bool all_ok = true;
- const char *entry_end;
+ const uint8_t *entry_end;
bool ok;
// Traverse all the entries in buffer_, skipping CIEs and offering
@@ -2254,6 +2675,22 @@ void CallFrameInfo::Reporter::BadCIEId(uint64 offset, uint64 cie_offset) {
filename_.c_str(), offset, section_.c_str(), cie_offset);
}
+void CallFrameInfo::Reporter::UnexpectedAddressSize(uint64 offset,
+ uint8_t address_size) {
+ fprintf(stderr,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE specifies unexpected address size: %d\n",
+ filename_.c_str(), offset, section_.c_str(), address_size);
+}
+
+void CallFrameInfo::Reporter::UnexpectedSegmentSize(uint64 offset,
+ uint8_t segment_size) {
+ fprintf(stderr,
+ "%s: CFI frame description entry at offset 0x%llx in '%s':"
+ " CIE specifies unexpected segment size: %d\n",
+ filename_.c_str(), offset, section_.c_str(), segment_size);
+}
+
void CallFrameInfo::Reporter::UnrecognizedVersion(uint64 offset, int version) {
fprintf(stderr,
"%s: CFI frame description entry at offset 0x%llx in '%s':"
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.h b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.h
index ecf4eb2..5d2d7f6 100644
--- a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.h
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader.h
@@ -40,25 +40,30 @@
#ifndef COMMON_DWARF_DWARF2READER_H__
#define COMMON_DWARF_DWARF2READER_H__
+#include <stdint.h>
+
#include <list>
#include <map>
#include <string>
#include <utility>
#include <vector>
+#include <memory>
#include "common/dwarf/bytereader.h"
#include "common/dwarf/dwarf2enums.h"
#include "common/dwarf/types.h"
#include "common/using_std_string.h"
+#include "common/dwarf/elf_reader.h"
namespace dwarf2reader {
struct LineStateMachine;
class Dwarf2Handler;
class LineInfoHandler;
+class DwpReader;
// This maps from a string naming a section to a pair containing a
// the data for the section, and the size of the section.
-typedef std::map<string, std::pair<const char*, uint64> > SectionMap;
+typedef std::map<string, std::pair<const uint8_t *, uint64> > SectionMap;
typedef std::list<std::pair<enum DwarfAttribute, enum DwarfForm> >
AttributeList;
typedef AttributeList::iterator AttributeIterator;
@@ -85,7 +90,7 @@ class LineInfo {
// to the beginning and length of the line information to read.
// Reader is a ByteReader class that has the endianness set
// properly.
- LineInfo(const char* buffer_, uint64 buffer_length,
+ LineInfo(const uint8_t *buffer_, uint64 buffer_length,
ByteReader* reader, LineInfoHandler* handler);
virtual ~LineInfo() {
@@ -111,7 +116,7 @@ class LineInfo {
static bool ProcessOneOpcode(ByteReader* reader,
LineInfoHandler* handler,
const struct LineInfoHeader &header,
- const char* start,
+ const uint8_t *start,
struct LineStateMachine* lsm,
size_t* len,
uintptr pc,
@@ -139,9 +144,11 @@ class LineInfo {
// buffer is the buffer for our line info, starting at exactly where
// the line info to read is. after_header is the place right after
// the end of the line information header.
- const char* buffer_;
+ const uint8_t *buffer_;
+#ifndef NDEBUG
uint64 buffer_length_;
- const char* after_header_;
+#endif
+ const uint8_t *after_header_;
};
// This class is the main interface between the line info reader and
@@ -180,6 +187,106 @@ class LineInfoHandler {
uint32 file_num, uint32 line_num, uint32 column_num) { }
};
+// This class is the main interface between the reader and the
+// client. The virtual functions inside this get called for
+// interesting events that happen during DWARF2 reading.
+// The default implementation skips everything.
+class Dwarf2Handler {
+ public:
+ Dwarf2Handler() { }
+
+ virtual ~Dwarf2Handler() { }
+
+ // Start to process a compilation unit at OFFSET from the beginning of the
+ // .debug_info section. Return false if you would like to skip this
+ // compilation unit.
+ virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
+ uint8 offset_size, uint64 cu_length,
+ uint8 dwarf_version) { return false; }
+
+ // When processing a skeleton compilation unit, resulting from a split
+ // DWARF compilation, once the skeleton debug info has been read,
+ // the reader will call this function to ask the client if it needs
+ // the full debug info from the .dwo or .dwp file. Return true if
+ // you need it, or false to skip processing the split debug info.
+ virtual bool NeedSplitDebugInfo() { return true; }
+
+ // Start to process a split compilation unit at OFFSET from the beginning of
+ // the debug_info section in the .dwp/.dwo file. Return false if you would
+ // like to skip this compilation unit.
+ virtual bool StartSplitCompilationUnit(uint64 offset,
+ uint64 cu_length) { return false; }
+
+ // Start to process a DIE at OFFSET from the beginning of the .debug_info
+ // section. Return false if you would like to skip this DIE.
+ virtual bool StartDIE(uint64 offset, enum DwarfTag tag) { return false; }
+
+ // Called when we have an attribute with unsigned data to give to our
+ // handler. The attribute is for the DIE at OFFSET from the beginning of the
+ // .debug_info section. Its name is ATTR, its form is FORM, and its value is
+ // DATA.
+ virtual void ProcessAttributeUnsigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data) { }
+
+ // Called when we have an attribute with signed data to give to our handler.
+ // The attribute is for the DIE at OFFSET from the beginning of the
+ // .debug_info section. Its name is ATTR, its form is FORM, and its value is
+ // DATA.
+ virtual void ProcessAttributeSigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ int64 data) { }
+
+ // Called when we have an attribute whose value is a reference to
+ // another DIE. The attribute belongs to the DIE at OFFSET from the
+ // beginning of the .debug_info section. Its name is ATTR, its form
+ // is FORM, and the offset of the DIE being referred to from the
+ // beginning of the .debug_info section is DATA.
+ virtual void ProcessAttributeReference(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data) { }
+
+ // Called when we have an attribute with a buffer of data to give to our
+ // handler. The attribute is for the DIE at OFFSET from the beginning of the
+ // .debug_info section. Its name is ATTR, its form is FORM, DATA points to
+ // the buffer's contents, and its length in bytes is LENGTH. The buffer is
+ // owned by the caller, not the callee, and may not persist for very long.
+ // If you want the data to be available later, it needs to be copied.
+ virtual void ProcessAttributeBuffer(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const uint8_t *data,
+ uint64 len) { }
+
+ // Called when we have an attribute with string data to give to our handler.
+ // The attribute is for the DIE at OFFSET from the beginning of the
+ // .debug_info section. Its name is ATTR, its form is FORM, and its value is
+ // DATA.
+ virtual void ProcessAttributeString(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const string& data) { }
+
+ // Called when we have an attribute whose value is the 64-bit signature
+ // of a type unit in the .debug_types section. OFFSET is the offset of
+ // the DIE whose attribute we're reporting. ATTR and FORM are the
+ // attribute's name and form. SIGNATURE is the type unit's signature.
+ virtual void ProcessAttributeSignature(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 signature) { }
+
+ // Called when finished processing the DIE at OFFSET.
+ // Because DWARF2/3 specifies a tree of DIEs, you may get starts
+ // before ends of the previous DIE, as we process children before
+ // ending the parent.
+ virtual void EndDIE(uint64 offset) { }
+
+};
+
// The base of DWARF2/3 debug info is a DIE (Debugging Information
// Entry.
// DWARF groups DIE's into a tree and calls the root of this tree a
@@ -221,12 +328,21 @@ class CompilationUnit {
// Initialize a compilation unit. This requires a map of sections,
// the offset of this compilation unit in the .debug_info section, a
// ByteReader, and a Dwarf2Handler class to call callbacks in.
- CompilationUnit(const SectionMap& sections, uint64 offset,
+ CompilationUnit(const string& path, const SectionMap& sections, uint64 offset,
ByteReader* reader, Dwarf2Handler* handler);
virtual ~CompilationUnit() {
if (abbrevs_) delete abbrevs_;
}
+ // Initialize a compilation unit from a .dwo or .dwp file.
+ // In this case, we need the .debug_addr section from the
+ // executable file that contains the corresponding skeleton
+ // compilation unit. We also inherit the Dwarf2Handler from
+ // the executable file, and call it as if we were still
+ // processing the original compilation unit.
+ void SetSplitDwarf(const uint8_t* addr_buffer, uint64 addr_buffer_length,
+ uint64 addr_base, uint64 ranges_base, uint64 dwo_id);
+
// Begin reading a Dwarf2 compilation unit, and calling the
// callbacks in the Dwarf2Handler
@@ -266,29 +382,104 @@ class CompilationUnit {
// Processes a single DIE for this compilation unit and return a new
// pointer just past the end of it
- const char* ProcessDIE(uint64 dieoffset,
- const char* start,
- const Abbrev& abbrev);
+ const uint8_t *ProcessDIE(uint64 dieoffset,
+ const uint8_t *start,
+ const Abbrev& abbrev);
// Processes a single attribute and return a new pointer just past the
// end of it
- const char* ProcessAttribute(uint64 dieoffset,
- const char* start,
- enum DwarfAttribute attr,
- enum DwarfForm form);
+ const uint8_t *ProcessAttribute(uint64 dieoffset,
+ const uint8_t *start,
+ enum DwarfAttribute attr,
+ enum DwarfForm form);
+
+ // Called when we have an attribute with unsigned data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of compilation unit, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA.
+ // If we see a DW_AT_GNU_dwo_id attribute, save the value so that
+ // we can find the debug info in a .dwo or .dwp file.
+ void ProcessAttributeUnsigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data) {
+ if (attr == DW_AT_GNU_dwo_id) {
+ dwo_id_ = data;
+ }
+ else if (attr == DW_AT_GNU_addr_base) {
+ addr_base_ = data;
+ }
+ else if (attr == DW_AT_GNU_ranges_base) {
+ ranges_base_ = data;
+ }
+ // TODO(yunlian): When we add DW_AT_ranges_base from DWARF-5,
+ // that base will apply to DW_AT_ranges attributes in the
+ // skeleton CU as well as in the .dwo/.dwp files.
+ else if (attr == DW_AT_ranges && is_split_dwarf_) {
+ data += ranges_base_;
+ }
+ handler_->ProcessAttributeUnsigned(offset, attr, form, data);
+ }
+
+ // Called when we have an attribute with signed data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of compilation unit, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA.
+ void ProcessAttributeSigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ int64 data) {
+ handler_->ProcessAttributeSigned(offset, attr, form, data);
+ }
+
+ // Called when we have an attribute with a buffer of data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of compilation unit, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA, and the
+ // length of the buffer is LENGTH.
+ void ProcessAttributeBuffer(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const uint8_t* data,
+ uint64 len) {
+ handler_->ProcessAttributeBuffer(offset, attr, form, data, len);
+ }
+
+ // Called when we have an attribute with string data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of compilation unit, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA.
+ // If we see a DW_AT_GNU_dwo_name attribute, save the value so
+ // that we can find the debug info in a .dwo or .dwp file.
+ void ProcessAttributeString(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const char* data) {
+ if (attr == DW_AT_GNU_dwo_name)
+ dwo_name_ = data;
+ handler_->ProcessAttributeString(offset, attr, form, data);
+ }
// Processes all DIEs for this compilation unit
void ProcessDIEs();
// Skips the die with attributes specified in ABBREV starting at
// START, and return the new place to position the stream to.
- const char* SkipDIE(const char* start,
- const Abbrev& abbrev);
+ const uint8_t *SkipDIE(const uint8_t *start, const Abbrev& abbrev);
// Skips the attribute starting at START, with FORM, and return the
// new place to position the stream to.
- const char* SkipAttribute(const char* start,
- enum DwarfForm form);
+ const uint8_t *SkipAttribute(const uint8_t *start, enum DwarfForm form);
+
+ // Process the actual debug information in a split DWARF file.
+ void ProcessSplitDwarf();
+
+ // Read the debug sections from a .dwo file.
+ void ReadDebugSectionsFromDwo(ElfReader* elf_reader,
+ SectionMap* sections);
+
+ // Path of the file containing the debug information.
+ const string path_;
// Offset from section start is the offset of this compilation unit
// from the beginning of the .debug_info section.
@@ -297,9 +488,9 @@ class CompilationUnit {
// buffer is the buffer for our CU, starting at .debug_info + offset
// passed in from constructor.
// after_header points to right after the compilation unit header.
- const char* buffer_;
+ const uint8_t *buffer_;
uint64 buffer_length_;
- const char* after_header_;
+ const uint8_t *after_header_;
// The associated ByteReader that handles endianness issues for us
ByteReader* reader_;
@@ -318,97 +509,143 @@ class CompilationUnit {
// String section buffer and length, if we have a string section.
// This is here to avoid doing a section lookup for strings in
// ProcessAttribute, which is in the hot path for DWARF2 reading.
- const char* string_buffer_;
+ const uint8_t *string_buffer_;
uint64 string_buffer_length_;
-};
-// This class is the main interface between the reader and the
-// client. The virtual functions inside this get called for
-// interesting events that happen during DWARF2 reading.
-// The default implementation skips everything.
+ // String offsets section buffer and length, if we have a string offsets
+ // section (.debug_str_offsets or .debug_str_offsets.dwo).
+ const uint8_t* str_offsets_buffer_;
+ uint64 str_offsets_buffer_length_;
-class Dwarf2Handler {
+ // Address section buffer and length, if we have an address section
+ // (.debug_addr).
+ const uint8_t* addr_buffer_;
+ uint64 addr_buffer_length_;
+
+ // Flag indicating whether this compilation unit is part of a .dwo
+ // or .dwp file. If true, we are reading this unit because a
+ // skeleton compilation unit in an executable file had a
+ // DW_AT_GNU_dwo_name or DW_AT_GNU_dwo_id attribute.
+ // In a .dwo file, we expect the string offsets section to
+ // have a ".dwo" suffix, and we will use the ".debug_addr" section
+ // associated with the skeleton compilation unit.
+ bool is_split_dwarf_;
+
+ // The value of the DW_AT_GNU_dwo_id attribute, if any.
+ uint64 dwo_id_;
+
+ // The value of the DW_AT_GNU_dwo_name attribute, if any.
+ const char* dwo_name_;
+
+ // If this is a split DWARF CU, the value of the DW_AT_GNU_dwo_id attribute
+ // from the skeleton CU.
+ uint64 skeleton_dwo_id_;
+
+ // The value of the DW_AT_GNU_ranges_base attribute, if any.
+ uint64 ranges_base_;
+
+ // The value of the DW_AT_GNU_addr_base attribute, if any.
+ uint64 addr_base_;
+
+ // True if we have already looked for a .dwp file.
+ bool have_checked_for_dwp_;
+
+ // Path to the .dwp file.
+ string dwp_path_;
+
+ // ByteReader for the DWP file.
+ std::unique_ptr<ByteReader> dwp_byte_reader_;
+
+ // DWP reader.
+ std::unique_ptr<DwpReader> dwp_reader_;
+};
+
+// A Reader for a .dwp file. Supports the fetching of DWARF debug
+// info for a given dwo_id.
+//
+// There are two versions of .dwp files. In both versions, the
+// .dwp file is an ELF file containing only debug sections.
+// In Version 1, the file contains many copies of each debug
+// section, one for each .dwo file that is packaged in the .dwp
+// file, and the .debug_cu_index section maps from the dwo_id
+// to a set of section indexes. In Version 2, the file contains
+// one of each debug section, and the .debug_cu_index section
+// maps from the dwo_id to a set of offsets and lengths that
+// identify each .dwo file's contribution to the larger sections.
+
+class DwpReader {
public:
- Dwarf2Handler() { }
+ DwpReader(const ByteReader& byte_reader, ElfReader* elf_reader);
- virtual ~Dwarf2Handler() { }
+ ~DwpReader();
- // Start to process a compilation unit at OFFSET from the beginning of the
- // .debug_info section. Return false if you would like to skip this
- // compilation unit.
- virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
- uint8 offset_size, uint64 cu_length,
- uint8 dwarf_version) { return false; }
+ // Read the CU index and initialize data members.
+ void Initialize();
- // Start to process a DIE at OFFSET from the beginning of the .debug_info
- // section. Return false if you would like to skip this DIE.
- virtual bool StartDIE(uint64 offset, enum DwarfTag tag,
- const AttributeList& attrs) { return false; }
+ // Read the debug sections for the given dwo_id.
+ void ReadDebugSectionsForCU(uint64 dwo_id, SectionMap* sections);
- // Called when we have an attribute with unsigned data to give to our
- // handler. The attribute is for the DIE at OFFSET from the beginning of the
- // .debug_info section. Its name is ATTR, its form is FORM, and its value is
- // DATA.
- virtual void ProcessAttributeUnsigned(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- uint64 data) { }
+ private:
+ // Search a v1 hash table for "dwo_id". Returns the slot index
+ // where the dwo_id was found, or -1 if it was not found.
+ int LookupCU(uint64 dwo_id);
- // Called when we have an attribute with signed data to give to our handler.
- // The attribute is for the DIE at OFFSET from the beginning of the
- // .debug_info section. Its name is ATTR, its form is FORM, and its value is
- // DATA.
- virtual void ProcessAttributeSigned(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- int64 data) { }
+ // Search a v2 hash table for "dwo_id". Returns the row index
+ // in the offsets and sizes tables, or 0 if it was not found.
+ uint32 LookupCUv2(uint64 dwo_id);
- // Called when we have an attribute whose value is a reference to
- // another DIE. The attribute belongs to the DIE at OFFSET from the
- // beginning of the .debug_info section. Its name is ATTR, its form
- // is FORM, and the offset of the DIE being referred to from the
- // beginning of the .debug_info section is DATA.
- virtual void ProcessAttributeReference(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- uint64 data) { }
+ // The ELF reader for the .dwp file.
+ ElfReader* elf_reader_;
- // Called when we have an attribute with a buffer of data to give to our
- // handler. The attribute is for the DIE at OFFSET from the beginning of the
- // .debug_info section. Its name is ATTR, its form is FORM, DATA points to
- // the buffer's contents, and its length in bytes is LENGTH. The buffer is
- // owned by the caller, not the callee, and may not persist for very long.
- // If you want the data to be available later, it needs to be copied.
- virtual void ProcessAttributeBuffer(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- const char* data,
- uint64 len) { }
+ // The ByteReader for the .dwp file.
+ const ByteReader& byte_reader_;
- // Called when we have an attribute with string data to give to our handler.
- // The attribute is for the DIE at OFFSET from the beginning of the
- // .debug_info section. Its name is ATTR, its form is FORM, and its value is
- // DATA.
- virtual void ProcessAttributeString(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- const string& data) { }
+ // Pointer to the .debug_cu_index section.
+ const char* cu_index_;
- // Called when we have an attribute whose value is the 64-bit signature
- // of a type unit in the .debug_types section. OFFSET is the offset of
- // the DIE whose attribute we're reporting. ATTR and FORM are the
- // attribute's name and form. SIGNATURE is the type unit's signature.
- virtual void ProcessAttributeSignature(uint64 offset,
- enum DwarfAttribute attr,
- enum DwarfForm form,
- uint64 signature) { }
+ // Size of the .debug_cu_index section.
+ size_t cu_index_size_;
- // Called when finished processing the DIE at OFFSET.
- // Because DWARF2/3 specifies a tree of DIEs, you may get starts
- // before ends of the previous DIE, as we process children before
- // ending the parent.
- virtual void EndDIE(uint64 offset) { }
+ // Pointer to the .debug_str.dwo section.
+ const char* string_buffer_;
+ // Size of the .debug_str.dwo section.
+ size_t string_buffer_size_;
+
+ // Version of the .dwp file. We support versions 1 and 2 currently.
+ int version_;
+
+ // Number of columns in the section tables (version 2).
+ unsigned int ncolumns_;
+
+ // Number of units in the section tables (version 2).
+ unsigned int nunits_;
+
+ // Number of slots in the hash table.
+ unsigned int nslots_;
+
+ // Pointer to the beginning of the hash table.
+ const char* phash_;
+
+ // Pointer to the beginning of the index table.
+ const char* pindex_;
+
+ // Pointer to the beginning of the section index pool (version 1).
+ const char* shndx_pool_;
+
+ // Pointer to the beginning of the section offset table (version 2).
+ const char* offset_table_;
+
+ // Pointer to the beginning of the section size table (version 2).
+ const char* size_table_;
+
+ // Contents of the sections of interest (version 2).
+ const char* abbrev_data_;
+ size_t abbrev_size_;
+ const char* info_data_;
+ size_t info_size_;
+ const char* str_offsets_data_;
+ size_t str_offsets_size_;
};
// This class is a reader for DWARF's Call Frame Information. CFI
@@ -638,7 +875,7 @@ class CallFrameInfo {
// The mechanics of C++ exception handling, personality routines,
// and language-specific data areas are described here, rather nicely:
// http://www.codesourcery.com/public/cxx-abi/abi-eh.html
- CallFrameInfo(const char *buffer, size_t buffer_length,
+ CallFrameInfo(const uint8_t *buffer, size_t buffer_length,
ByteReader *reader, Handler *handler, Reporter *reporter,
bool eh_frame = false)
: buffer_(buffer), buffer_length_(buffer_length),
@@ -666,7 +903,7 @@ class CallFrameInfo {
size_t offset;
// The start of this entry in the buffer.
- const char *start;
+ const uint8_t *start;
// Which kind of entry this is.
//
@@ -677,16 +914,16 @@ class CallFrameInfo {
// The end of this entry's common prologue (initial length and id), and
// the start of this entry's kind-specific fields.
- const char *fields;
+ const uint8_t *fields;
// The start of this entry's instructions.
- const char *instructions;
+ const uint8_t *instructions;
// The address past the entry's last byte in the buffer. (Note that
// since offset points to the entry's initial length field, and the
// length field is the number of bytes after that field, this is not
// simply buffer_ + offset + length.)
- const char *end;
+ const uint8_t *end;
// For both DWARF CFI and .eh_frame sections, this is the CIE id in a
// CIE, and the offset of the associated CIE in an FDE.
@@ -763,7 +1000,7 @@ class CallFrameInfo {
// true. On failure, report the problem, and return false. Even if we
// return false, set ENTRY->end to the first byte after the entry if we
// were able to figure that out, or NULL if we weren't.
- bool ReadEntryPrologue(const char *cursor, Entry *entry);
+ bool ReadEntryPrologue(const uint8_t *cursor, Entry *entry);
// Parse the fields of a CIE after the entry prologue, including any 'z'
// augmentation data. Assume that the 'Entry' fields of CIE are
@@ -791,7 +1028,7 @@ class CallFrameInfo {
}
// The contents of the DWARF .debug_info section we're parsing.
- const char *buffer_;
+ const uint8_t *buffer_;
size_t buffer_length_;
// For reading multi-byte values with the appropriate endianness.
@@ -990,6 +1227,14 @@ class CallFrameInfo::Reporter {
// there is not a CIE.
virtual void BadCIEId(uint64 offset, uint64 cie_offset);
+ // The FDE at OFFSET refers to a CIE with an address size we don't know how
+ // to handle.
+ virtual void UnexpectedAddressSize(uint64 offset, uint8_t address_size);
+
+ // The FDE at OFFSET refers to a CIE with an segment descriptor size we
+ // don't know how to handle.
+ virtual void UnexpectedSegmentSize(uint64 offset, uint8_t segment_size);
+
// The FDE at OFFSET refers to a CIE with version number VERSION,
// which we don't recognize. We cannot parse DWARF CFI if it uses
// a version number we don't recognize.
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc
new file mode 100644
index 0000000..38cc7ea
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_cfi_unittest.cc
@@ -0,0 +1,2555 @@
+// Copyright (c) 2010, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// dwarf2reader_cfi_unittest.cc: Unit tests for dwarf2reader::CallFrameInfo
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <string>
+#include <vector>
+
+// The '.eh_frame' format, used by the Linux C++ ABI for exception
+// handling, is poorly specified. To help test our support for .eh_frame,
+// if you #define WRITE_ELF while compiling this file, and add the
+// 'include' directory from the binutils, gcc, or gdb source tree to the
+// #include path, then each test that calls the
+// PERHAPS_WRITE_DEBUG_FRAME_FILE or PERHAPS_WRITE_EH_FRAME_FILE will write
+// an ELF file containing a .debug_frame or .eh_frame section; you can then
+// use tools like readelf to examine the test data, and check the tools'
+// interpretation against the test's intentions. Each ELF file is named
+// "cfitest-TEST", where TEST identifies the particular test.
+#ifdef WRITE_ELF
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+extern "C" {
+// To compile with WRITE_ELF, you should add the 'include' directory
+// of the binutils, gcc, or gdb source tree to your #include path;
+// that directory contains this header.
+#include "elf/common.h"
+}
+#endif
+
+#include "breakpad_googletest_includes.h"
+#include "common/dwarf/bytereader-inl.h"
+#include "common/dwarf/cfi_assembler.h"
+#include "common/dwarf/dwarf2reader.h"
+#include "common/using_std_string.h"
+#include "google_breakpad/common/breakpad_types.h"
+
+using google_breakpad::CFISection;
+using google_breakpad::test_assembler::Label;
+using google_breakpad::test_assembler::kBigEndian;
+using google_breakpad::test_assembler::kLittleEndian;
+using google_breakpad::test_assembler::Section;
+
+using dwarf2reader::DwarfPointerEncoding;
+using dwarf2reader::ENDIANNESS_BIG;
+using dwarf2reader::ENDIANNESS_LITTLE;
+using dwarf2reader::ByteReader;
+using dwarf2reader::CallFrameInfo;
+
+using std::vector;
+using testing::InSequence;
+using testing::Return;
+using testing::Sequence;
+using testing::Test;
+using testing::_;
+
+#ifdef WRITE_ELF
+void WriteELFFrameSection(const char *filename, const char *section_name,
+ const CFISection &section);
+#define PERHAPS_WRITE_DEBUG_FRAME_FILE(name, section) \
+ WriteELFFrameSection("cfitest-" name, ".debug_frame", section);
+#define PERHAPS_WRITE_EH_FRAME_FILE(name, section) \
+ WriteELFFrameSection("cfitest-" name, ".eh_frame", section);
+#else
+#define PERHAPS_WRITE_DEBUG_FRAME_FILE(name, section)
+#define PERHAPS_WRITE_EH_FRAME_FILE(name, section)
+#endif
+
+class MockCallFrameInfoHandler: public CallFrameInfo::Handler {
+ public:
+ MOCK_METHOD6(Entry, bool(size_t offset, uint64 address, uint64 length,
+ uint8 version, const string &augmentation,
+ unsigned return_address));
+ MOCK_METHOD2(UndefinedRule, bool(uint64 address, int reg));
+ MOCK_METHOD2(SameValueRule, bool(uint64 address, int reg));
+ MOCK_METHOD4(OffsetRule, bool(uint64 address, int reg, int base_register,
+ long offset));
+ MOCK_METHOD4(ValOffsetRule, bool(uint64 address, int reg, int base_register,
+ long offset));
+ MOCK_METHOD3(RegisterRule, bool(uint64 address, int reg, int base_register));
+ MOCK_METHOD3(ExpressionRule, bool(uint64 address, int reg,
+ const string &expression));
+ MOCK_METHOD3(ValExpressionRule, bool(uint64 address, int reg,
+ const string &expression));
+ MOCK_METHOD0(End, bool());
+ MOCK_METHOD2(PersonalityRoutine, bool(uint64 address, bool indirect));
+ MOCK_METHOD2(LanguageSpecificDataArea, bool(uint64 address, bool indirect));
+ MOCK_METHOD0(SignalHandler, bool());
+};
+
+class MockCallFrameErrorReporter: public CallFrameInfo::Reporter {
+ public:
+ MockCallFrameErrorReporter() : Reporter("mock filename", "mock section") { }
+ MOCK_METHOD2(Incomplete, void(uint64, CallFrameInfo::EntryKind));
+ MOCK_METHOD1(EarlyEHTerminator, void(uint64));
+ MOCK_METHOD2(CIEPointerOutOfRange, void(uint64, uint64));
+ MOCK_METHOD2(BadCIEId, void(uint64, uint64));
+ MOCK_METHOD2(UnexpectedAddressSize, void(uint64, uint8_t));
+ MOCK_METHOD2(UnexpectedSegmentSize, void(uint64, uint8_t));
+ MOCK_METHOD2(UnrecognizedVersion, void(uint64, int version));
+ MOCK_METHOD2(UnrecognizedAugmentation, void(uint64, const string &));
+ MOCK_METHOD2(InvalidPointerEncoding, void(uint64, uint8));
+ MOCK_METHOD2(UnusablePointerEncoding, void(uint64, uint8));
+ MOCK_METHOD2(RestoreInCIE, void(uint64, uint64));
+ MOCK_METHOD3(BadInstruction, void(uint64, CallFrameInfo::EntryKind, uint64));
+ MOCK_METHOD3(NoCFARule, void(uint64, CallFrameInfo::EntryKind, uint64));
+ MOCK_METHOD3(EmptyStateStack, void(uint64, CallFrameInfo::EntryKind, uint64));
+};
+
+struct CFIFixture {
+
+ enum { kCFARegister = CallFrameInfo::Handler::kCFARegister };
+
+ CFIFixture() {
+ // Default expectations for the data handler.
+ //
+ // - Leave Entry and End without expectations, as it's probably a
+ // good idea to set those explicitly in each test.
+ //
+ // - Expect the *Rule functions to not be called,
+ // so that each test can simply list the calls they expect.
+ //
+ // I gather I could use StrictMock for this, but the manual seems
+ // to suggest using that only as a last resort, and this isn't so
+ // bad.
+ EXPECT_CALL(handler, UndefinedRule(_, _)).Times(0);
+ EXPECT_CALL(handler, SameValueRule(_, _)).Times(0);
+ EXPECT_CALL(handler, OffsetRule(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ValOffsetRule(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, RegisterRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, ExpressionRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, ValExpressionRule(_, _, _)).Times(0);
+ EXPECT_CALL(handler, PersonalityRoutine(_, _)).Times(0);
+ EXPECT_CALL(handler, LanguageSpecificDataArea(_, _)).Times(0);
+ EXPECT_CALL(handler, SignalHandler()).Times(0);
+
+ // Default expectations for the error/warning reporer.
+ EXPECT_CALL(reporter, Incomplete(_, _)).Times(0);
+ EXPECT_CALL(reporter, EarlyEHTerminator(_)).Times(0);
+ EXPECT_CALL(reporter, CIEPointerOutOfRange(_, _)).Times(0);
+ EXPECT_CALL(reporter, BadCIEId(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnrecognizedVersion(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, _)).Times(0);
+ EXPECT_CALL(reporter, InvalidPointerEncoding(_, _)).Times(0);
+ EXPECT_CALL(reporter, UnusablePointerEncoding(_, _)).Times(0);
+ EXPECT_CALL(reporter, RestoreInCIE(_, _)).Times(0);
+ EXPECT_CALL(reporter, BadInstruction(_, _, _)).Times(0);
+ EXPECT_CALL(reporter, NoCFARule(_, _, _)).Times(0);
+ EXPECT_CALL(reporter, EmptyStateStack(_, _, _)).Times(0);
+ }
+
+ MockCallFrameInfoHandler handler;
+ MockCallFrameErrorReporter reporter;
+};
+
+class CFI: public CFIFixture, public Test { };
+
+TEST_F(CFI, EmptyRegion) {
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+ static const uint8_t data[] = { 42 };
+
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ CallFrameInfo parser(data, 0, &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+TEST_F(CFI, IncompleteLength32) {
+ CFISection section(kBigEndian, 8);
+ section
+ // Not even long enough for an initial length.
+ .D16(0xa0f)
+ // Padding to keep valgrind happy. We subtract these off when we
+ // construct the parser.
+ .D16(0);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size() - 2,
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(CFI, IncompleteLength64) {
+ CFISection section(kLittleEndian, 4);
+ section
+ // An incomplete 64-bit DWARF initial length.
+ .D32(0xffffffff).D32(0x71fbaec2)
+ // Padding to keep valgrind happy. We subtract these off when we
+ // construct the parser.
+ .D32(0);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader byte_reader(ENDIANNESS_LITTLE);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size() - 4,
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(CFI, IncompleteId32) {
+ CFISection section(kBigEndian, 8);
+ section
+ .D32(3) // Initial length, not long enough for id
+ .D8(0xd7).D8(0xe5).D8(0xf1) // incomplete id
+ .CIEHeader(8727, 3983, 8889, 3, "")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, Incomplete(_, CallFrameInfo::kUnknown))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(CFI, BadId32) {
+ CFISection section(kBigEndian, 8);
+ section
+ .D32(0x100) // Initial length
+ .D32(0xe802fade) // bogus ID
+ .Append(0x100 - 4, 0x42); // make the length true
+ section
+ .CIEHeader(1672, 9872, 8529, 3, "")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ EXPECT_CALL(reporter, CIEPointerOutOfRange(_, 0xe802fade))
+ .WillOnce(Return());
+
+ string contents;
+ ASSERT_TRUE(section.GetContents(&contents));
+
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// A lone CIE shouldn't cause any handler calls.
+TEST_F(CFI, SingleCIE) {
+ CFISection section(kLittleEndian, 4);
+ section.CIEHeader(0xffe799a8, 0x3398dcdd, 0x6e9683de, 3, "");
+ section.Append(10, dwarf2reader::DW_CFA_nop);
+ section.FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("SingleCIE", section);
+
+ EXPECT_CALL(handler, Entry(_, _, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, End()).Times(0);
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_LITTLE);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// One FDE, one CIE.
+TEST_F(CFI, OneFDE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie, 0x7714740d, 0x3d5a10cd)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("OneFDE", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, 0x7714740d, 0x3d5a10cd, 3, "", 0x6b6efb87))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// Two FDEs share a CIE.
+TEST_F(CFI, TwoFDEsOneCIE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // First FDE. readelf complains about this one because it makes
+ // a forward reference to its CIE.
+ .FDEHeader(cie, 0xa42744df, 0xa3b42121)
+ .FinishEntry()
+ // CIE.
+ .Mark(&cie)
+ .CIEHeader(0x04f7dc7b, 0x3d00c05f, 0xbd43cb59, 3, "")
+ .FinishEntry()
+ // Second FDE.
+ .FDEHeader(cie, 0x6057d391, 0x700f608d)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsOneCIE", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, 0xa42744df, 0xa3b42121, 3, "", 0xbd43cb59))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, 0x6057d391, 0x700f608d, 3, "", 0xbd43cb59))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// Two FDEs, two CIEs.
+TEST_F(CFI, TwoFDEsTwoCIEs) {
+ CFISection section(kLittleEndian, 8);
+ Label cie1, cie2;
+ section
+ // First CIE.
+ .Mark(&cie1)
+ .CIEHeader(0x694d5d45, 0x4233221b, 0xbf45e65a, 3, "")
+ .FinishEntry()
+ // First FDE which cites second CIE. readelf complains about
+ // this one because it makes a forward reference to its CIE.
+ .FDEHeader(cie2, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL)
+ .FinishEntry()
+ // Second FDE, which cites first CIE.
+ .FDEHeader(cie1, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL)
+ .FinishEntry()
+ // Second CIE.
+ .Mark(&cie2)
+ .CIEHeader(0xfba3fad7, 0x6287e1fd, 0x61d2c581, 2, "")
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("TwoFDEsTwoCIEs", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, 0x778b27dfe5871f05ULL, 0x324ace3448070926ULL, 2,
+ "", 0x61d2c581))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, 0xf6054ca18b10bf5fULL, 0x45fdb970d8bca342ULL, 3,
+ "", 0xbf45e65a))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_LITTLE);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// An FDE whose CIE specifies a version we don't recognize.
+TEST_F(CFI, BadVersion) {
+ CFISection section(kBigEndian, 4);
+ Label cie1, cie2;
+ section
+ .Mark(&cie1)
+ .CIEHeader(0xca878cf0, 0x7698ec04, 0x7b616f54, 0x52, "")
+ .FinishEntry()
+ // We should skip this entry, as its CIE specifies a version we
+ // don't recognize.
+ .FDEHeader(cie1, 0x08852292, 0x2204004a)
+ .FinishEntry()
+ // Despite the above, we should visit this entry.
+ .Mark(&cie2)
+ .CIEHeader(0x7c3ae7c9, 0xb9b9a512, 0x96cb3264, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie2, 0x2094735a, 0x6e875501)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("BadVersion", section);
+
+ EXPECT_CALL(reporter, UnrecognizedVersion(_, 0x52))
+ .WillOnce(Return());
+
+ {
+ InSequence s;
+ // We should see no mention of the first FDE, but we should get
+ // a call to Entry for the second.
+ EXPECT_CALL(handler, Entry(_, 0x2094735a, 0x6e875501, 3, "",
+ 0x96cb3264))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// An FDE whose CIE specifies an augmentation we don't recognize.
+TEST_F(CFI, BadAugmentation) {
+ CFISection section(kBigEndian, 4);
+ Label cie1, cie2;
+ section
+ .Mark(&cie1)
+ .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 3, "spaniels!")
+ .FinishEntry()
+ // We should skip this entry, as its CIE specifies an
+ // augmentation we don't recognize.
+ .FDEHeader(cie1, 0x7714740d, 0x3d5a10cd)
+ .FinishEntry()
+ // Despite the above, we should visit this entry.
+ .Mark(&cie2)
+ .CIEHeader(0xf8bc4399, 0x8cf09931, 0xf2f519b2, 3, "")
+ .FinishEntry()
+ .FDEHeader(cie2, 0x7bf0fda0, 0xcbcd28d8)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("BadAugmentation", section);
+
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "spaniels!"))
+ .WillOnce(Return());
+
+ {
+ InSequence s;
+ // We should see no mention of the first FDE, but we should get
+ // a call to Entry for the second.
+ EXPECT_CALL(handler, Entry(_, 0x7bf0fda0, 0xcbcd28d8, 3, "",
+ 0xf2f519b2))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+// The return address column field is a byte in CFI version 1
+// (DWARF2), but a ULEB128 value in version 3 (DWARF3).
+TEST_F(CFI, CIEVersion1ReturnColumn) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, using the version 1 format: return column is a ubyte.
+ .Mark(&cie)
+ // Use a value for the return column that is parsed differently
+ // as a ubyte and as a ULEB128.
+ .CIEHeader(0xbcdea24f, 0x5be28286, 0x9f, 1, "")
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0xb8d347b5, 0x825e55dc)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion1ReturnColumn", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0xb8d347b5, 0x825e55dc, 1, "", 0x9f))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+// The return address column field is a byte in CFI version 1
+// (DWARF2), but a ULEB128 value in version 3 (DWARF3).
+TEST_F(CFI, CIEVersion3ReturnColumn) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, using the version 3 format: return column is a ULEB128.
+ .Mark(&cie)
+ // Use a value for the return column that is parsed differently
+ // as a ubyte and as a ULEB128.
+ .CIEHeader(0x0ab4758d, 0xc010fdf7, 0x89, 3, "")
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0x86763f2b, 0x2a66dc23)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion3ReturnColumn", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x86763f2b, 0x2a66dc23, 3, "", 0x89))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+TEST_F(CFI, CIEVersion4AdditionalFields) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ .Mark(&cie)
+ // CIE version 4 with expected address and segment size.
+ .CIEHeader(0x0ab4758d, 0xc010fdf7, 0x89, 4, "", true, 8, 0)
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0x86763f2b, 0x2a66dc23)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("CIEVersion3ReturnColumn", section);
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler, Entry(_, 0x86763f2b, 0x2a66dc23, 4, "", 0x89))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(4);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_TRUE(parser.Start());
+}
+
+TEST_F(CFI, CIEVersion4AdditionalFieldsUnexpectedAddressSize) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+
+ section
+ .Mark(&cie)
+ // Unexpected address size.
+ .CIEHeader(0x4be22f75, 0x2492236e, 0x6b6efb87, 4, "", true, 3, 0)
+ .FinishEntry()
+ // FDE, citing that CIE.
+ .FDEHeader(cie, 0x86763f2b, 0x2a66dc23)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("AdditionalFieldsUnexpectedAddress", section);
+
+ EXPECT_CALL(reporter, UnexpectedAddressSize(_, 3))
+ .WillOnce(Return());
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+TEST_F(CFI, CIEVersion4AdditionalFieldsUnexpectedSegmentSize) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+
+ section
+ .Mark(&cie)
+ .CIEHeader(0xf8bc4399, 0x8cf09931, 0xf2f519b2, 4, "", true, 8, 7)
+ .FinishEntry()
+ .FDEHeader(cie, 0x7bf0fda0, 0xcbcd28d8)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("AdditionalFieldsUnexpectedSegment", section);
+
+ EXPECT_CALL(reporter, UnexpectedSegmentSize(_, 7))
+ .WillOnce(Return());
+
+ string contents;
+ EXPECT_TRUE(section.GetContents(&contents));
+ ByteReader byte_reader(ENDIANNESS_BIG);
+ byte_reader.SetAddressSize(8);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ EXPECT_FALSE(parser.Start());
+}
+
+struct CFIInsnFixture: public CFIFixture {
+ CFIInsnFixture() : CFIFixture() {
+ data_factor = 0xb6f;
+ return_register = 0x9be1ed9f;
+ version = 3;
+ cfa_base_register = 0x383a3aa;
+ cfa_offset = 0xf748;
+ }
+
+ // Prepare SECTION to receive FDE instructions.
+ //
+ // - Append a stock CIE header that establishes the fixture's
+ // code_factor, data_factor, return_register, version, and
+ // augmentation values.
+ // - Have the CIE set up a CFA rule using cfa_base_register and
+ // cfa_offset.
+ // - Append a stock FDE header, referring to the above CIE, for the
+ // fde_size bytes at fde_start. Choose fde_start and fde_size
+ // appropriately for the section's address size.
+ // - Set appropriate expectations on handler in sequence s for the
+ // frame description entry and the CIE's CFA rule.
+ //
+ // On return, SECTION is ready to have FDE instructions appended to
+ // it, and its FinishEntry member called.
+ void StockCIEAndFDE(CFISection *section) {
+ // Choose appropriate constants for our address size.
+ if (section->AddressSize() == 4) {
+ fde_start = 0xc628ecfbU;
+ fde_size = 0x5dee04a2;
+ code_factor = 0x60b;
+ } else {
+ assert(section->AddressSize() == 8);
+ fde_start = 0x0005c57ce7806bd3ULL;
+ fde_size = 0x2699521b5e333100ULL;
+ code_factor = 0x01008e32855274a8ULL;
+ }
+
+ // Create the CIE.
+ (*section)
+ .Mark(&cie_label)
+ .CIEHeader(code_factor, data_factor, return_register, version,
+ "")
+ .D8(dwarf2reader::DW_CFA_def_cfa)
+ .ULEB128(cfa_base_register)
+ .ULEB128(cfa_offset)
+ .FinishEntry();
+
+ // Create the FDE.
+ section->FDEHeader(cie_label, fde_start, fde_size);
+
+ // Expect an Entry call for the FDE and a ValOffsetRule call for the
+ // CIE's CFA rule.
+ EXPECT_CALL(handler, Entry(_, fde_start, fde_size, version, "",
+ return_register))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, kCFARegister,
+ cfa_base_register, cfa_offset))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ }
+
+ // Run the contents of SECTION through a CallFrameInfo parser,
+ // expecting parser.Start to return SUCCEEDS
+ void ParseSection(CFISection *section, bool succeeds = true) {
+ string contents;
+ EXPECT_TRUE(section->GetContents(&contents));
+ dwarf2reader::Endianness endianness;
+ if (section->endianness() == kBigEndian)
+ endianness = ENDIANNESS_BIG;
+ else {
+ assert(section->endianness() == kLittleEndian);
+ endianness = ENDIANNESS_LITTLE;
+ }
+ ByteReader byte_reader(endianness);
+ byte_reader.SetAddressSize(section->AddressSize());
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter);
+ if (succeeds)
+ EXPECT_TRUE(parser.Start());
+ else
+ EXPECT_FALSE(parser.Start());
+ }
+
+ Label cie_label;
+ Sequence s;
+ uint64 code_factor;
+ int data_factor;
+ unsigned return_register;
+ unsigned version;
+ unsigned cfa_base_register;
+ int cfa_offset;
+ uint64 fde_start, fde_size;
+};
+
+class CFIInsn: public CFIInsnFixture, public Test { };
+
+TEST_F(CFIInsn, DW_CFA_set_loc) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_set_loc).D32(0xb1ee3e7a)
+ // Use DW_CFA_def_cfa to force a handler call that we can use to
+ // check the effect of the DW_CFA_set_loc.
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x4defb431).ULEB128(0x6d17b0ee)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_set_loc", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(0xb1ee3e7a, kCFARegister, 0x4defb431, 0x6d17b0ee))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_advance_loc) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x2a)
+ // Use DW_CFA_def_cfa to force a handler call that we can use to
+ // check the effect of the DW_CFA_advance_loc.
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x5bbb3715).ULEB128(0x0186c7bf)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start + 0x2a * code_factor,
+ kCFARegister, 0x5bbb3715, 0x0186c7bf))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_advance_loc1) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_advance_loc1).D8(0xd8)
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x69d5696a).ULEB128(0x1eb7fc93)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc1", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule((fde_start + 0xd8 * code_factor),
+ kCFARegister, 0x69d5696a, 0x1eb7fc93))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_advance_loc2) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_advance_loc2).D16(0x3adb)
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x3a368bed).ULEB128(0x3194ee37)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc2", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule((fde_start + 0x3adb * code_factor),
+ kCFARegister, 0x3a368bed, 0x3194ee37))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_advance_loc4) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_advance_loc4).D32(0x15813c88)
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x135270c5).ULEB128(0x24bad7cb)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc4", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule((fde_start + 0x15813c88ULL * code_factor),
+ kCFARegister, 0x135270c5, 0x24bad7cb))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_MIPS_advance_loc8) {
+ code_factor = 0x2d;
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_MIPS_advance_loc8).D64(0x3c4f3945b92c14ULL)
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0xe17ed602).ULEB128(0x3d162e7f)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_advance_loc8", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule((fde_start + 0x3c4f3945b92c14ULL * code_factor),
+ kCFARegister, 0xe17ed602, 0x3d162e7f))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x4e363a85).ULEB128(0x815f9aa7)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("DW_CFA_def_cfa", section);
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x4e363a85, 0x815f9aa7))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa_sf) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_sf).ULEB128(0x8ccb32b7).LEB128(0x9ea)
+ .D8(dwarf2reader::DW_CFA_def_cfa_sf).ULEB128(0x9b40f5da).LEB128(-0x40a2)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x8ccb32b7,
+ 0x9ea * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x9b40f5da,
+ -0x40a2 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa_register) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_register).ULEB128(0x3e7e9363)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x3e7e9363, cfa_offset))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// DW_CFA_def_cfa_register should have no effect when applied to a
+// non-base/offset rule.
+TEST_F(CFIInsn, DW_CFA_def_cfa_registerBadRule) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("needle in a haystack")
+ .D8(dwarf2reader::DW_CFA_def_cfa_register).ULEB128(0xf1b49e49)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValExpressionRule(fde_start, kCFARegister,
+ "needle in a haystack"))
+ .WillRepeatedly(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x1e8e3b9b)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ 0x1e8e3b9b))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa_offset_sf) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_offset_sf).LEB128(0x970)
+ .D8(dwarf2reader::DW_CFA_def_cfa_offset_sf).LEB128(-0x2cd)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ 0x970 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, cfa_base_register,
+ -0x2cd * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// DW_CFA_def_cfa_offset should have no effect when applied to a
+// non-base/offset rule.
+TEST_F(CFIInsn, DW_CFA_def_cfa_offsetBadRule) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("six ways to Sunday")
+ .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x1e8e3b9b)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValExpressionRule(fde_start, kCFARegister, "six ways to Sunday"))
+ .WillRepeatedly(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_def_cfa_expression) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_def_cfa_expression).Block("eating crow")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, kCFARegister,
+ "eating crow"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_undefined) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x300ce45d)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x300ce45d))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_same_value) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x3865a760)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0x3865a760))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset | 0x2c).ULEB128(0x9f6)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x2c, kCFARegister, 0x9f6 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_offset_extended) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset_extended).ULEB128(0x402b).ULEB128(0xb48)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x402b, kCFARegister, 0xb48 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_offset_extended_sf) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset_extended_sf)
+ .ULEB128(0x997c23ee).LEB128(0x2d00)
+ .D8(dwarf2reader::DW_CFA_offset_extended_sf)
+ .ULEB128(0x9519eb82).LEB128(-0xa77)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x997c23ee,
+ kCFARegister, 0x2d00 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x9519eb82,
+ kCFARegister, -0xa77 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_val_offset) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x623562fe).ULEB128(0x673)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, 0x623562fe,
+ kCFARegister, 0x673 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_val_offset_sf) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_offset_sf).ULEB128(0x6f4f).LEB128(0xaab)
+ .D8(dwarf2reader::DW_CFA_val_offset_sf).ULEB128(0x2483).LEB128(-0x8a2)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, 0x6f4f,
+ kCFARegister, 0xaab * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, 0x2483,
+ kCFARegister, -0x8a2 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_register) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0x278d18f9).ULEB128(0x1a684414)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0x278d18f9, 0x1a684414))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_expression) {
+ CFISection section(kBigEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0xa1619fb2)
+ .Block("plus ça change, plus c'est la même chose")
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ExpressionRule(fde_start, 0xa1619fb2,
+ "plus ça change, plus c'est la même chose"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_val_expression) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0xc5e4a9e3)
+ .Block("he who has the gold makes the rules")
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValExpressionRule(fde_start, 0xc5e4a9e3,
+ "he who has the gold makes the rules"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_restore) {
+ CFISection section(kLittleEndian, 8);
+ code_factor = 0x01bd188a9b1fa083ULL;
+ data_factor = -0x1ac8;
+ return_register = 0x8c35b049;
+ version = 2;
+ fde_start = 0x2d70fe998298bbb1ULL;
+ fde_size = 0x46ccc2e63cf0b108ULL;
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version,
+ "")
+ // Provide a CFA rule, because register rules require them.
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x6ca1d50e).ULEB128(0x372e38e8)
+ // Provide an offset(N) rule for register 0x3c.
+ .D8(dwarf2reader::DW_CFA_offset | 0x3c).ULEB128(0xb348)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide a new offset(N) rule for register 0x3c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x13)
+ .D8(dwarf2reader::DW_CFA_offset | 0x3c).ULEB128(0x9a50)
+ // At a third address, restore the original rule for register 0x3c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x01)
+ .D8(dwarf2reader::DW_CFA_restore | 0x3c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x6ca1d50e, 0x372e38e8))
+ .WillOnce(Return(true));
+ // CIE's rule for register 0x3c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x3c, kCFARegister, 0xb348 * data_factor))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x3c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + 0x13 * code_factor, 0x3c,
+ kCFARegister, 0x9a50 * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's rule for register 0x3c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + (0x13 + 0x01) * code_factor, 0x3c,
+ kCFARegister, 0xb348 * data_factor))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_restoreNoRule) {
+ CFISection section(kBigEndian, 4);
+ code_factor = 0x005f78143c1c3b82ULL;
+ data_factor = 0x25d0;
+ return_register = 0xe8;
+ version = 1;
+ fde_start = 0x4062e30f;
+ fde_size = 0x5302a389;
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version, "")
+ // Provide a CFA rule, because register rules require them.
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x470aa334).ULEB128(0x099ef127)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide an offset(N) rule for register 0x2c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x7)
+ .D8(dwarf2reader::DW_CFA_offset | 0x2c).ULEB128(0x1f47)
+ // At a third address, restore the (missing) CIE rule for register 0x2c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0xb)
+ .D8(dwarf2reader::DW_CFA_restore | 0x2c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x470aa334, 0x099ef127))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x2c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + 0x7 * code_factor, 0x2c,
+ kCFARegister, 0x1f47 * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's (missing) rule for register 0x2c.
+ EXPECT_CALL(handler,
+ SameValueRule(fde_start + (0x7 + 0xb) * code_factor, 0x2c))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_restore_extended) {
+ CFISection section(kBigEndian, 4);
+ code_factor = 0x126e;
+ data_factor = -0xd8b;
+ return_register = 0x77711787;
+ version = 3;
+ fde_start = 0x01f55a45;
+ fde_size = 0x452adb80;
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(code_factor, data_factor, return_register, version,
+ "", true /* dwarf64 */ )
+ // Provide a CFA rule, because register rules require them.
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x56fa0edd).ULEB128(0x097f78a5)
+ // Provide an offset(N) rule for register 0x0f9b8a1c.
+ .D8(dwarf2reader::DW_CFA_offset_extended)
+ .ULEB128(0x0f9b8a1c).ULEB128(0xc979)
+ .FinishEntry()
+ // In the FDE...
+ .FDEHeader(cie, fde_start, fde_size)
+ // At a second address, provide a new offset(N) rule for reg 0x0f9b8a1c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x3)
+ .D8(dwarf2reader::DW_CFA_offset_extended)
+ .ULEB128(0x0f9b8a1c).ULEB128(0x3b7b)
+ // At a third address, restore the original rule for register 0x0f9b8a1c.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 0x04)
+ .D8(dwarf2reader::DW_CFA_restore_extended).ULEB128(0x0f9b8a1c)
+ .FinishEntry();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ Entry(_, fde_start, fde_size, version, "", return_register))
+ .WillOnce(Return(true));
+ // CIE's CFA rule.
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x56fa0edd, 0x097f78a5))
+ .WillOnce(Return(true));
+ // CIE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x0f9b8a1c, kCFARegister,
+ 0xc979 * data_factor))
+ .WillOnce(Return(true));
+ // FDE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + 0x3 * code_factor, 0x0f9b8a1c,
+ kCFARegister, 0x3b7b * data_factor))
+ .WillOnce(Return(true));
+ // Restore CIE's rule for register 0x0f9b8a1c.
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start + (0x3 + 0x4) * code_factor, 0x0f9b8a1c,
+ kCFARegister, 0xc979 * data_factor))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_remember_and_restore_state) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+
+ // We create a state, save it, modify it, and then restore. We
+ // refer to the state that is overridden the restore as the
+ // "outgoing" state, and the restored state the "incoming" state.
+ //
+ // Register outgoing incoming expect
+ // 1 offset(N) no rule new "same value" rule
+ // 2 register(R) offset(N) report changed rule
+ // 3 offset(N) offset(M) report changed offset
+ // 4 offset(N) offset(N) no report
+ // 5 offset(N) no rule new "same value" rule
+ section
+ // Create the "incoming" state, which we will save and later restore.
+ .D8(dwarf2reader::DW_CFA_offset | 2).ULEB128(0x9806)
+ .D8(dwarf2reader::DW_CFA_offset | 3).ULEB128(0x995d)
+ .D8(dwarf2reader::DW_CFA_offset | 4).ULEB128(0x7055)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ // Advance to a new instruction; an implementation could legitimately
+ // ignore all but the final rule for a given register at a given address.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ // Create the "outgoing" state, which we will discard.
+ .D8(dwarf2reader::DW_CFA_offset | 1).ULEB128(0xea1a)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(2).ULEB128(0x1d2a3767)
+ .D8(dwarf2reader::DW_CFA_offset | 3).ULEB128(0xdd29)
+ .D8(dwarf2reader::DW_CFA_offset | 5).ULEB128(0xf1ce)
+ // At a third address, restore the incoming state.
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ uint64 addr = fde_start;
+
+ // Expect the incoming rules to be reported.
+ EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 4, kCFARegister, 0x7055 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+
+ addr += code_factor;
+
+ // After the save, we establish the outgoing rule set.
+ EXPECT_CALL(handler, OffsetRule(addr, 1, kCFARegister, 0xea1a * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(addr, 2, 0x1d2a3767))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0xdd29 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 5, kCFARegister, 0xf1ce * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+
+ addr += code_factor;
+
+ // Finally, after the restore, expect to see the differences from
+ // the outgoing to the incoming rules reported.
+ EXPECT_CALL(handler, SameValueRule(addr, 1))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 2, kCFARegister, 0x9806 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(addr, 3, kCFARegister, 0x995d * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(addr, 5))
+ .InSequence(s).WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// Check that restoring a rule set reports changes to the CFA rule.
+TEST_F(CFIInsn, DW_CFA_remember_and_restore_stateCFA) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+
+ section
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_def_cfa_offset).ULEB128(0x90481102)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, kCFARegister,
+ cfa_base_register, 0x90481102))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor * 2, kCFARegister,
+ cfa_base_register, cfa_offset))
+ .InSequence(s).WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_nop) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_nop)
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x3fb8d4f1).ULEB128(0x078dc67b)
+ .D8(dwarf2reader::DW_CFA_nop)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ ValOffsetRule(fde_start, kCFARegister, 0x3fb8d4f1, 0x078dc67b))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_GNU_window_save) {
+ CFISection section(kBigEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_GNU_window_save)
+ .FinishEntry();
+
+ // Don't include all the rules in any particular sequence.
+
+ // The caller's %o0-%o7 have become the callee's %i0-%i7. This is
+ // the GCC register numbering.
+ for (int i = 8; i < 16; i++)
+ EXPECT_CALL(handler, RegisterRule(fde_start, i, i + 16))
+ .WillOnce(Return(true));
+ // The caller's %l0-%l7 and %i0-%i7 have been saved at the top of
+ // its frame.
+ for (int i = 16; i < 32; i++)
+ EXPECT_CALL(handler, OffsetRule(fde_start, i, kCFARegister, (i-16) * 4))
+ .WillOnce(Return(true));
+
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_GNU_args_size) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_GNU_args_size).ULEB128(0xeddfa520)
+ // Verify that we see this, meaning we parsed the above properly.
+ .D8(dwarf2reader::DW_CFA_offset | 0x23).ULEB128(0x269)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x23, kCFARegister, 0x269 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIInsn, DW_CFA_GNU_negative_offset_extended) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_GNU_negative_offset_extended)
+ .ULEB128(0x430cc87a).ULEB128(0x613)
+ .FinishEntry();
+
+ EXPECT_CALL(handler,
+ OffsetRule(fde_start, 0x430cc87a,
+ kCFARegister, -0x613 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+// Three FDEs: skip the second
+TEST_F(CFIInsn, SkipFDE) {
+ CFISection section(kBigEndian, 4);
+ Label cie;
+ section
+ // CIE, used by all FDEs.
+ .Mark(&cie)
+ .CIEHeader(0x010269f2, 0x9177, 0xedca5849, 2, "")
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(0x42ed390b).ULEB128(0x98f43aad)
+ .FinishEntry()
+ // First FDE.
+ .FDEHeader(cie, 0xa870ebdd, 0x60f6aa4)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0x3a860351).ULEB128(0x6c9a6bcf)
+ .FinishEntry()
+ // Second FDE.
+ .FDEHeader(cie, 0xc534f7c0, 0xf6552e9, true /* dwarf64 */)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0x1b62c234).ULEB128(0x26586b18)
+ .FinishEntry()
+ // Third FDE.
+ .FDEHeader(cie, 0xf681cfc8, 0x7e4594e)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0x26c53934).ULEB128(0x18eeb8a4)
+ .FinishEntry();
+
+ {
+ InSequence s;
+
+ // Process the first FDE.
+ EXPECT_CALL(handler, Entry(_, 0xa870ebdd, 0x60f6aa4, 2, "", 0xedca5849))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0xa870ebdd, kCFARegister,
+ 0x42ed390b, 0x98f43aad))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(0xa870ebdd, 0x3a860351, 0x6c9a6bcf))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .WillOnce(Return(true));
+
+ // Skip the second FDE.
+ EXPECT_CALL(handler, Entry(_, 0xc534f7c0, 0xf6552e9, 2, "", 0xedca5849))
+ .WillOnce(Return(false));
+
+ // Process the third FDE.
+ EXPECT_CALL(handler, Entry(_, 0xf681cfc8, 0x7e4594e, 2, "", 0xedca5849))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0xf681cfc8, kCFARegister,
+ 0x42ed390b, 0x98f43aad))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(0xf681cfc8, 0x26c53934, 0x18eeb8a4))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .WillOnce(Return(true));
+ }
+
+ ParseSection(&section);
+}
+
+// Quit processing in the middle of an entry's instructions.
+TEST_F(CFIInsn, QuitMidentry) {
+ CFISection section(kLittleEndian, 8);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0xe0cf850d).ULEB128(0x15aab431)
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x46750aa5).Block("meat")
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xe0cf850d, 0x15aab431))
+ .InSequence(s).WillOnce(Return(false));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseSection(&section, false);
+}
+
+class CFIRestore: public CFIInsnFixture, public Test { };
+
+TEST_F(CFIRestore, RestoreUndefinedRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x0bac878e)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x0bac878e))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreUndefinedRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x7dedff5f)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x7dedff5f)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, UndefinedRule(fde_start, 0x7dedff5f))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(fde_start + code_factor, 0x7dedff5f))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + 2 * code_factor, 0x7dedff5f))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreSameValueRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0xadbc9b3a)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0xadbc9b3a))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreSameValueRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_same_value).ULEB128(0x3d90dcb5)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x3d90dcb5)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, SameValueRule(fde_start, 0x3d90dcb5))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x3d90dcb5))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, SameValueRule(fde_start + 2 * code_factor, 0x3d90dcb5))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreOffsetRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset | 0x14).ULEB128(0xb6f)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x14,
+ kCFARegister, 0xb6f * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreOffsetRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0xeb7)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x21)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x21,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0x21))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreOffsetRuleChangedOffset) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0x134)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_offset | 0x21).ULEB128(0xf4f)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, OffsetRule(fde_start, 0x21,
+ kCFARegister, 0x134 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + code_factor, 0x21,
+ kCFARegister, 0xf4f * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, OffsetRule(fde_start + 2 * code_factor, 0x21,
+ kCFARegister, 0x134 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValOffsetRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x829caee6).ULEB128(0xe4c)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x829caee6,
+ kCFARegister, 0xe4c * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValOffsetRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0xf17c36d6).ULEB128(0xeb7)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xf17c36d6)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0xf17c36d6,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xf17c36d6))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0xf17c36d6,
+ kCFARegister, 0xeb7 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValOffsetRuleChangedValOffset) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x2cf0ab1b).ULEB128(0x562)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_val_offset).ULEB128(0x2cf0ab1b).ULEB128(0xe88)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValOffsetRule(fde_start, 0x2cf0ab1b,
+ kCFARegister, 0x562 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + code_factor, 0x2cf0ab1b,
+ kCFARegister, 0xe88 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(fde_start + 2 * code_factor, 0x2cf0ab1b,
+ kCFARegister, 0x562 * data_factor))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreRegisterRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0x77514acc).ULEB128(0x464de4ce)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0x77514acc, 0x464de4ce))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreRegisterRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0xe39acce5).ULEB128(0x095f1559)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xe39acce5)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xe39acce5, 0x095f1559))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xe39acce5))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(fde_start + 2 * code_factor, 0xe39acce5,
+ 0x095f1559))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreRegisterRuleChangedRegister) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0xd40e21b1).ULEB128(0x16607d6a)
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(0xd40e21b1).ULEB128(0xbabb4742)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, RegisterRule(fde_start, 0xd40e21b1, 0x16607d6a))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(fde_start + code_factor, 0xd40e21b1,
+ 0xbabb4742))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, RegisterRule(fde_start + 2 * code_factor, 0xd40e21b1,
+ 0x16607d6a))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreExpressionRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x666ae152).Block("dwarf")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0x666ae152, "dwarf"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreExpressionRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0xb5ca5c46).Block("elf")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xb5ca5c46)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0xb5ca5c46, "elf"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ExpressionRule(fde_start + 2 * code_factor, 0xb5ca5c46,
+ "elf"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreExpressionRuleChangedExpression) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x500f5739).Block("smurf")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_expression).ULEB128(0x500f5739).Block("orc")
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ExpressionRule(fde_start, 0x500f5739, "smurf"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ExpressionRule(fde_start + code_factor, 0x500f5739,
+ "orc"))
+ .InSequence(s).WillOnce(Return(true));
+ // Expectations are not wishes.
+ EXPECT_CALL(handler, ExpressionRule(fde_start + 2 * code_factor, 0x500f5739,
+ "smurf"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValExpressionRuleUnchanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x666ae152)
+ .Block("hideous")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x666ae152, "hideous"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValExpressionRuleChanged) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0xb5ca5c46)
+ .Block("revolting")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0xb5ca5c46)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChanged", section);
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0xb5ca5c46, "revolting"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(fde_start + code_factor, 0xb5ca5c46))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor, 0xb5ca5c46,
+ "revolting"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+TEST_F(CFIRestore, RestoreValExpressionRuleChangedValExpression) {
+ CFISection section(kLittleEndian, 4);
+ StockCIEAndFDE(&section);
+ section
+ .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x500f5739)
+ .Block("repulsive")
+ .D8(dwarf2reader::DW_CFA_remember_state)
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_val_expression).ULEB128(0x500f5739)
+ .Block("nauseous")
+ .D8(dwarf2reader::DW_CFA_advance_loc | 1)
+ .D8(dwarf2reader::DW_CFA_restore_state)
+ .FinishEntry();
+
+ PERHAPS_WRITE_DEBUG_FRAME_FILE("RestoreValExpressionRuleChangedValExpression",
+ section);
+
+ EXPECT_CALL(handler, ValExpressionRule(fde_start, 0x500f5739, "repulsive"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValExpressionRule(fde_start + code_factor, 0x500f5739,
+ "nauseous"))
+ .InSequence(s).WillOnce(Return(true));
+ // Expectations are not wishes.
+ EXPECT_CALL(handler, ValExpressionRule(fde_start + 2 * code_factor, 0x500f5739,
+ "repulsive"))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End()).WillOnce(Return(true));
+
+ ParseSection(&section);
+}
+
+struct EHFrameFixture: public CFIInsnFixture {
+ EHFrameFixture()
+ : CFIInsnFixture(), section(kBigEndian, 4, true) {
+ encoded_pointer_bases.cfi = 0x7f496cb2;
+ encoded_pointer_bases.text = 0x540f67b6;
+ encoded_pointer_bases.data = 0xe3eab768;
+ section.SetEncodedPointerBases(encoded_pointer_bases);
+ }
+ CFISection section;
+ CFISection::EncodedPointerBases encoded_pointer_bases;
+
+ // Parse CFIInsnFixture::ParseSection, but parse the section as
+ // .eh_frame data, supplying stock base addresses.
+ void ParseEHFrameSection(CFISection *section, bool succeeds = true) {
+ EXPECT_TRUE(section->ContainsEHFrame());
+ string contents;
+ EXPECT_TRUE(section->GetContents(&contents));
+ dwarf2reader::Endianness endianness;
+ if (section->endianness() == kBigEndian)
+ endianness = ENDIANNESS_BIG;
+ else {
+ assert(section->endianness() == kLittleEndian);
+ endianness = ENDIANNESS_LITTLE;
+ }
+ ByteReader byte_reader(endianness);
+ byte_reader.SetAddressSize(section->AddressSize());
+ byte_reader.SetCFIDataBase(encoded_pointer_bases.cfi,
+ reinterpret_cast<const uint8_t *>(contents.data()));
+ byte_reader.SetTextBase(encoded_pointer_bases.text);
+ byte_reader.SetDataBase(encoded_pointer_bases.data);
+ CallFrameInfo parser(reinterpret_cast<const uint8_t *>(contents.data()),
+ contents.size(),
+ &byte_reader, &handler, &reporter, true);
+ if (succeeds)
+ EXPECT_TRUE(parser.Start());
+ else
+ EXPECT_FALSE(parser.Start());
+ }
+
+};
+
+class EHFrame: public EHFrameFixture, public Test { };
+
+// A simple CIE, an FDE, and a terminator.
+TEST_F(EHFrame, Terminator) {
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(9968, 2466, 67, 1, "")
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(3772).ULEB128(1372)
+ .FinishEntry()
+ .FDEHeader(cie, 0x848037a1, 0x7b30475e)
+ .D8(dwarf2reader::DW_CFA_set_loc).D32(0x17713850)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(5721)
+ .FinishEntry()
+ .D32(0) // Terminate the sequence.
+ // This FDE should be ignored.
+ .FDEHeader(cie, 0xf19629fe, 0x439fb09b)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.Terminator", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x848037a1, 0x7b30475e, 1, "", 67))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0x848037a1, kCFARegister, 3772, 1372))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0x17713850, 5721))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(reporter, EarlyEHTerminator(_))
+ .InSequence(s).WillOnce(Return());
+
+ ParseEHFrameSection(&section);
+}
+
+// The parser should recognize the Linux Standards Base 'z' augmentations.
+TEST_F(EHFrame, SimpleFDE) {
+ DwarfPointerEncoding lsda_encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_indirect
+ | dwarf2reader::DW_EH_PE_datarel
+ | dwarf2reader::DW_EH_PE_sdata2);
+ DwarfPointerEncoding fde_encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_textrel
+ | dwarf2reader::DW_EH_PE_udata2);
+
+ section.SetPointerEncoding(fde_encoding);
+ section.SetEncodedPointerBases(encoded_pointer_bases);
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(4873, 7012, 100, 1, "zSLPR")
+ .ULEB128(7) // Augmentation data length
+ .D8(lsda_encoding) // LSDA pointer format
+ .D8(dwarf2reader::DW_EH_PE_pcrel) // personality pointer format
+ .EncodedPointer(0x97baa00, dwarf2reader::DW_EH_PE_pcrel) // and value
+ .D8(fde_encoding) // FDE pointer format
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(6706).ULEB128(31)
+ .FinishEntry()
+ .FDEHeader(cie, 0x540f6b56, 0xf686)
+ .ULEB128(2) // Augmentation data length
+ .EncodedPointer(0xe3eab475, lsda_encoding) // LSDA pointer, signed
+ .D8(dwarf2reader::DW_CFA_set_loc)
+ .EncodedPointer(0x540fa4ce, fde_encoding)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(0x675e)
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.SimpleFDE", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x540f6b56, 0xf686, 1, "zSLPR", 100))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, PersonalityRoutine(0x97baa00, false))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, LanguageSpecificDataArea(0xe3eab475, true))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, SignalHandler())
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0x540f6b56, kCFARegister, 6706, 31))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0x540fa4ce, 0x675e))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// Check that we can handle an empty 'z' augmentation.
+TEST_F(EHFrame, EmptyZ) {
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(5955, 5805, 228, 1, "z")
+ .ULEB128(0) // Augmentation data length
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(3629).ULEB128(247)
+ .FinishEntry()
+ .FDEHeader(cie, 0xda007738, 0xfb55c641)
+ .ULEB128(0) // Augmentation data length
+ .D8(dwarf2reader::DW_CFA_advance_loc1).D8(11)
+ .D8(dwarf2reader::DW_CFA_undefined).ULEB128(3769)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.EmptyZ", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xda007738, 0xfb55c641, 1, "z", 228))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, ValOffsetRule(0xda007738, kCFARegister, 3629, 247))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, UndefinedRule(0xda007738 + 11 * 5955, 3769))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// Check that we recognize bad 'z' augmentation characters.
+TEST_F(EHFrame, BadZ) {
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(6937, 1045, 142, 1, "zQ")
+ .ULEB128(0) // Augmentation data length
+ .D8(dwarf2reader::DW_CFA_def_cfa).ULEB128(9006).ULEB128(7725)
+ .FinishEntry()
+ .FDEHeader(cie, 0x1293efa8, 0x236f53f2)
+ .ULEB128(0) // Augmentation data length
+ .D8(dwarf2reader::DW_CFA_advance_loc | 12)
+ .D8(dwarf2reader::DW_CFA_register).ULEB128(5667).ULEB128(3462)
+ .FinishEntry();
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.BadZ", section);
+
+ EXPECT_CALL(reporter, UnrecognizedAugmentation(_, "zQ"))
+ .WillOnce(Return());
+
+ ParseEHFrameSection(&section, false);
+}
+
+TEST_F(EHFrame, zL) {
+ Label cie;
+ DwarfPointerEncoding lsda_encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_funcrel
+ | dwarf2reader::DW_EH_PE_udata2);
+ section
+ .Mark(&cie)
+ .CIEHeader(9285, 9959, 54, 1, "zL")
+ .ULEB128(1) // Augmentation data length
+ .D8(lsda_encoding) // encoding for LSDA pointer in FDE
+
+ .FinishEntry()
+ .FDEHeader(cie, 0xd40091aa, 0x9aa6e746)
+ .ULEB128(2) // Augmentation data length
+ .EncodedPointer(0xd40099cd, lsda_encoding) // LSDA pointer
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zL", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zL", 54))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, LanguageSpecificDataArea(0xd40099cd, false))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(EHFrame, zP) {
+ Label cie;
+ DwarfPointerEncoding personality_encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_datarel
+ | dwarf2reader::DW_EH_PE_udata2);
+ section
+ .Mark(&cie)
+ .CIEHeader(1097, 6313, 17, 1, "zP")
+ .ULEB128(3) // Augmentation data length
+ .D8(personality_encoding) // encoding for personality routine
+ .EncodedPointer(0xe3eaccac, personality_encoding) // value
+ .FinishEntry()
+ .FDEHeader(cie, 0x0c8350c9, 0xbef11087)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zP", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x0c8350c9, 0xbef11087, 1, "zP", 17))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, PersonalityRoutine(0xe3eaccac, false))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(EHFrame, zR) {
+ Label cie;
+ DwarfPointerEncoding pointer_encoding =
+ DwarfPointerEncoding(dwarf2reader::DW_EH_PE_textrel
+ | dwarf2reader::DW_EH_PE_sdata2);
+ section.SetPointerEncoding(pointer_encoding);
+ section
+ .Mark(&cie)
+ .CIEHeader(8011, 5496, 75, 1, "zR")
+ .ULEB128(1) // Augmentation data length
+ .D8(pointer_encoding) // encoding for FDE addresses
+ .FinishEntry()
+ .FDEHeader(cie, 0x540f9431, 0xbd0)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zR", section);
+
+ EXPECT_CALL(handler, Entry(_, 0x540f9431, 0xbd0, 1, "zR", 75))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+TEST_F(EHFrame, zS) {
+ Label cie;
+ section
+ .Mark(&cie)
+ .CIEHeader(9217, 7694, 57, 1, "zS")
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .FDEHeader(cie, 0xd40091aa, 0x9aa6e746)
+ .ULEB128(0) // Augmentation data length
+ .FinishEntry()
+ .D32(0); // terminator
+
+ PERHAPS_WRITE_EH_FRAME_FILE("EHFrame.zS", section);
+
+ EXPECT_CALL(handler, Entry(_, 0xd40091aa, 0x9aa6e746, 1, "zS", 57))
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, SignalHandler())
+ .InSequence(s).WillOnce(Return(true));
+ EXPECT_CALL(handler, End())
+ .InSequence(s).WillOnce(Return(true));
+
+ ParseEHFrameSection(&section);
+}
+
+// These tests require manual inspection of the test output.
+struct CFIReporterFixture {
+ CFIReporterFixture() : reporter("test file name", "test section name") { }
+ CallFrameInfo::Reporter reporter;
+};
+
+class CFIReporter: public CFIReporterFixture, public Test { };
+
+TEST_F(CFIReporter, Incomplete) {
+ reporter.Incomplete(0x0102030405060708ULL, CallFrameInfo::kUnknown);
+}
+
+TEST_F(CFIReporter, EarlyEHTerminator) {
+ reporter.EarlyEHTerminator(0x0102030405060708ULL);
+}
+
+TEST_F(CFIReporter, CIEPointerOutOfRange) {
+ reporter.CIEPointerOutOfRange(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, BadCIEId) {
+ reporter.BadCIEId(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, UnrecognizedVersion) {
+ reporter.UnrecognizedVersion(0x0123456789abcdefULL, 43);
+}
+
+TEST_F(CFIReporter, UnrecognizedAugmentation) {
+ reporter.UnrecognizedAugmentation(0x0123456789abcdefULL, "poodles");
+}
+
+TEST_F(CFIReporter, InvalidPointerEncoding) {
+ reporter.InvalidPointerEncoding(0x0123456789abcdefULL, 0x42);
+}
+
+TEST_F(CFIReporter, UnusablePointerEncoding) {
+ reporter.UnusablePointerEncoding(0x0123456789abcdefULL, 0x42);
+}
+
+TEST_F(CFIReporter, RestoreInCIE) {
+ reporter.RestoreInCIE(0x0123456789abcdefULL, 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, BadInstruction) {
+ reporter.BadInstruction(0x0123456789abcdefULL, CallFrameInfo::kFDE,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, NoCFARule) {
+ reporter.NoCFARule(0x0123456789abcdefULL, CallFrameInfo::kCIE,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, EmptyStateStack) {
+ reporter.EmptyStateStack(0x0123456789abcdefULL, CallFrameInfo::kTerminator,
+ 0xfedcba9876543210ULL);
+}
+
+TEST_F(CFIReporter, ClearingCFARule) {
+ reporter.ClearingCFARule(0x0123456789abcdefULL, CallFrameInfo::kFDE,
+ 0xfedcba9876543210ULL);
+}
+
+#ifdef WRITE_ELF
+// See comments at the top of the file mentioning WRITE_ELF for details.
+
+using google_breakpad::test_assembler::Section;
+
+struct ELFSectionHeader {
+ ELFSectionHeader(unsigned int set_type)
+ : type(set_type), flags(0), address(0), link(0), info(0),
+ alignment(1), entry_size(0) { }
+ Label name;
+ unsigned int type;
+ uint64_t flags;
+ uint64_t address;
+ Label file_offset;
+ Label file_size;
+ unsigned int link;
+ unsigned int info;
+ uint64_t alignment;
+ uint64_t entry_size;
+};
+
+void AppendSectionHeader(CFISection *table, const ELFSectionHeader &header) {
+ (*table)
+ .D32(header.name) // name, index in string tbl
+ .D32(header.type) // type
+ .Address(header.flags) // flags
+ .Address(header.address) // address in memory
+ .Address(header.file_offset) // offset in ELF file
+ .Address(header.file_size) // length in bytes
+ .D32(header.link) // link to related section
+ .D32(header.info) // miscellaneous
+ .Address(header.alignment) // alignment
+ .Address(header.entry_size); // entry size
+}
+
+void WriteELFFrameSection(const char *filename, const char *cfi_name,
+ const CFISection &cfi) {
+ int elf_class = cfi.AddressSize() == 4 ? ELFCLASS32 : ELFCLASS64;
+ int elf_data = (cfi.endianness() == kBigEndian
+ ? ELFDATA2MSB : ELFDATA2LSB);
+ CFISection elf(cfi.endianness(), cfi.AddressSize());
+ Label elf_header_size, section_table_offset;
+ elf
+ .Append("\x7f" "ELF")
+ .D8(elf_class) // 32-bit or 64-bit ELF
+ .D8(elf_data) // endianness
+ .D8(1) // ELF version
+ .D8(ELFOSABI_LINUX) // Operating System/ABI indication
+ .D8(0) // ABI version
+ .Append(7, 0xda) // padding
+ .D16(ET_EXEC) // file type: executable file
+ .D16(EM_386) // architecture: Intel IA-32
+ .D32(EV_CURRENT); // ELF version
+ elf
+ .Address(0x0123456789abcdefULL) // program entry point
+ .Address(0) // program header offset
+ .Address(section_table_offset) // section header offset
+ .D32(0) // processor-specific flags
+ .D16(elf_header_size) // ELF header size in bytes */
+ .D16(elf_class == ELFCLASS32 ? 32 : 56) // program header entry size
+ .D16(0) // program header table entry count
+ .D16(elf_class == ELFCLASS32 ? 40 : 64) // section header entry size
+ .D16(3) // section count
+ .D16(1) // section name string table
+ .Mark(&elf_header_size);
+
+ // The null section. Every ELF file has one, as the first entry in
+ // the section header table.
+ ELFSectionHeader null_header(SHT_NULL);
+ null_header.file_offset = 0;
+ null_header.file_size = 0;
+
+ // The CFI section. The whole reason for writing out this ELF file
+ // is to put this in it so that we can run other dumping programs on
+ // it to check its contents.
+ ELFSectionHeader cfi_header(SHT_PROGBITS);
+ cfi_header.file_size = cfi.Size();
+
+ // The section holding the names of the sections. This is the
+ // section whose index appears in the e_shstrndx member of the ELF
+ // header.
+ ELFSectionHeader section_names_header(SHT_STRTAB);
+ CFISection section_names(cfi.endianness(), cfi.AddressSize());
+ section_names
+ .Mark(&null_header.name)
+ .AppendCString("")
+ .Mark(&section_names_header.name)
+ .AppendCString(".shstrtab")
+ .Mark(&cfi_header.name)
+ .AppendCString(cfi_name)
+ .Mark(&section_names_header.file_size);
+
+ // Create the section table. The ELF header's e_shoff member refers
+ // to this, and the e_shnum member gives the number of entries it
+ // contains.
+ CFISection section_table(cfi.endianness(), cfi.AddressSize());
+ AppendSectionHeader(&section_table, null_header);
+ AppendSectionHeader(&section_table, section_names_header);
+ AppendSectionHeader(&section_table, cfi_header);
+
+ // Append the section table and the section contents to the ELF file.
+ elf
+ .Mark(&section_table_offset)
+ .Append(section_table)
+ .Mark(&section_names_header.file_offset)
+ .Append(section_names)
+ .Mark(&cfi_header.file_offset)
+ .Append(cfi);
+
+ string contents;
+ if (!elf.GetContents(&contents)) {
+ fprintf(stderr, "failed to get ELF file contents\n");
+ exit(1);
+ }
+
+ FILE *out = fopen(filename, "w");
+ if (!out) {
+ fprintf(stderr, "error opening ELF file '%s': %s\n",
+ filename, strerror(errno));
+ exit(1);
+ }
+
+ if (fwrite(contents.data(), 1, contents.size(), out) != contents.size()) {
+ fprintf(stderr, "error writing ELF data to '%s': %s\n",
+ filename, strerror(errno));
+ exit(1);
+ }
+
+ if (fclose(out) == EOF) {
+ fprintf(stderr, "error closing ELF file '%s': %s\n",
+ filename, strerror(errno));
+ exit(1);
+ }
+}
+#endif
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_die_unittest.cc b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_die_unittest.cc
new file mode 100644
index 0000000..71418eb
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_die_unittest.cc
@@ -0,0 +1,487 @@
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// dwarf2reader_die_unittest.cc: Unit tests for dwarf2reader::CompilationUnit
+
+#include <stdint.h>
+#include <stdlib.h>
+
+#include <iostream>
+#include <string>
+#include <vector>
+
+#include "breakpad_googletest_includes.h"
+#include "common/dwarf/bytereader-inl.h"
+#include "common/dwarf/dwarf2reader_test_common.h"
+#include "common/dwarf/dwarf2reader.h"
+#include "common/using_std_string.h"
+#include "google_breakpad/common/breakpad_types.h"
+
+using google_breakpad::test_assembler::Endianness;
+using google_breakpad::test_assembler::Label;
+using google_breakpad::test_assembler::Section;
+using google_breakpad::test_assembler::kBigEndian;
+using google_breakpad::test_assembler::kLittleEndian;
+
+using dwarf2reader::ByteReader;
+using dwarf2reader::CompilationUnit;
+using dwarf2reader::Dwarf2Handler;
+using dwarf2reader::DwarfAttribute;
+using dwarf2reader::DwarfForm;
+using dwarf2reader::DwarfHasChild;
+using dwarf2reader::DwarfTag;
+using dwarf2reader::ENDIANNESS_BIG;
+using dwarf2reader::ENDIANNESS_LITTLE;
+using dwarf2reader::SectionMap;
+
+using std::vector;
+using testing::InSequence;
+using testing::Pointee;
+using testing::Return;
+using testing::Sequence;
+using testing::Test;
+using testing::TestWithParam;
+using testing::_;
+
+class MockDwarf2Handler: public Dwarf2Handler {
+ public:
+ MOCK_METHOD5(StartCompilationUnit, bool(uint64 offset, uint8 address_size,
+ uint8 offset_size, uint64 cu_length,
+ uint8 dwarf_version));
+ MOCK_METHOD2(StartDIE, bool(uint64 offset, enum DwarfTag tag));
+ MOCK_METHOD4(ProcessAttributeUnsigned, void(uint64 offset,
+ DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data));
+ MOCK_METHOD4(ProcessAttributeSigned, void(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ int64 data));
+ MOCK_METHOD4(ProcessAttributeReference, void(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data));
+ MOCK_METHOD5(ProcessAttributeBuffer, void(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const uint8_t *data,
+ uint64 len));
+ MOCK_METHOD4(ProcessAttributeString, void(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const string& data));
+ MOCK_METHOD4(ProcessAttributeSignature, void(uint64 offset,
+ DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 signature));
+ MOCK_METHOD1(EndDIE, void(uint64 offset));
+};
+
+struct DIEFixture {
+
+ DIEFixture() {
+ // Fix the initial offset of the .debug_info and .debug_abbrev sections.
+ info.start() = 0;
+ abbrevs.start() = 0;
+
+ // Default expectations for the data handler.
+ EXPECT_CALL(handler, StartCompilationUnit(_, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, StartDIE(_, _)).Times(0);
+ EXPECT_CALL(handler, ProcessAttributeUnsigned(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ProcessAttributeSigned(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ProcessAttributeReference(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ProcessAttributeBuffer(_, _, _, _, _)).Times(0);
+ EXPECT_CALL(handler, ProcessAttributeString(_, _, _, _)).Times(0);
+ EXPECT_CALL(handler, EndDIE(_)).Times(0);
+ }
+
+ // Return a reference to a section map whose .debug_info section refers
+ // to |info|, and whose .debug_abbrev section refers to |abbrevs|. This
+ // function returns a reference to the same SectionMap each time; new
+ // calls wipe out maps established by earlier calls.
+ const SectionMap &MakeSectionMap() {
+ // Copy the sections' contents into strings that will live as long as
+ // the map itself.
+ assert(info.GetContents(&info_contents));
+ assert(abbrevs.GetContents(&abbrevs_contents));
+ section_map.clear();
+ section_map[".debug_info"].first
+ = reinterpret_cast<const uint8_t *>(info_contents.data());
+ section_map[".debug_info"].second = info_contents.size();
+ section_map[".debug_abbrev"].first
+ = reinterpret_cast<const uint8_t *>(abbrevs_contents.data());
+ section_map[".debug_abbrev"].second = abbrevs_contents.size();
+ return section_map;
+ }
+
+ TestCompilationUnit info;
+ TestAbbrevTable abbrevs;
+ MockDwarf2Handler handler;
+ string abbrevs_contents, info_contents;
+ SectionMap section_map;
+};
+
+struct DwarfHeaderParams {
+ DwarfHeaderParams(Endianness endianness, size_t format_size,
+ int version, size_t address_size)
+ : endianness(endianness), format_size(format_size),
+ version(version), address_size(address_size) { }
+ Endianness endianness;
+ size_t format_size; // 4-byte or 8-byte DWARF offsets
+ int version;
+ size_t address_size;
+};
+
+class DwarfHeader: public DIEFixture,
+ public TestWithParam<DwarfHeaderParams> { };
+
+TEST_P(DwarfHeader, Header) {
+ Label abbrev_table = abbrevs.Here();
+ abbrevs.Abbrev(1, dwarf2reader::DW_TAG_compile_unit,
+ dwarf2reader::DW_children_yes)
+ .Attribute(dwarf2reader::DW_AT_name, dwarf2reader::DW_FORM_string)
+ .EndAbbrev()
+ .EndTable();
+
+ info.set_format_size(GetParam().format_size);
+ info.set_endianness(GetParam().endianness);
+
+ info.Header(GetParam().version, abbrev_table, GetParam().address_size)
+ .ULEB128(1) // DW_TAG_compile_unit, with children
+ .AppendCString("sam") // DW_AT_name, DW_FORM_string
+ .D8(0); // end of children
+ info.Finish();
+
+ {
+ InSequence s;
+ EXPECT_CALL(handler,
+ StartCompilationUnit(0, GetParam().address_size,
+ GetParam().format_size, _,
+ GetParam().version))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, StartDIE(_, dwarf2reader::DW_TAG_compile_unit))
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, ProcessAttributeString(_, dwarf2reader::DW_AT_name,
+ dwarf2reader::DW_FORM_string,
+ "sam"))
+ .WillOnce(Return());
+ EXPECT_CALL(handler, EndDIE(_))
+ .WillOnce(Return());
+ }
+
+ ByteReader byte_reader(GetParam().endianness == kLittleEndian ?
+ ENDIANNESS_LITTLE : ENDIANNESS_BIG);
+ CompilationUnit parser("", MakeSectionMap(), 0, &byte_reader, &handler);
+ EXPECT_EQ(parser.Start(), info_contents.size());
+}
+
+INSTANTIATE_TEST_CASE_P(
+ HeaderVariants, DwarfHeader,
+ ::testing::Values(DwarfHeaderParams(kLittleEndian, 4, 2, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 2, 8),
+ DwarfHeaderParams(kLittleEndian, 4, 3, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 3, 8),
+ DwarfHeaderParams(kLittleEndian, 4, 4, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 4, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 2, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 2, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 3, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 3, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 4, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 4, 8),
+ DwarfHeaderParams(kBigEndian, 4, 2, 4),
+ DwarfHeaderParams(kBigEndian, 4, 2, 8),
+ DwarfHeaderParams(kBigEndian, 4, 3, 4),
+ DwarfHeaderParams(kBigEndian, 4, 3, 8),
+ DwarfHeaderParams(kBigEndian, 4, 4, 4),
+ DwarfHeaderParams(kBigEndian, 4, 4, 8),
+ DwarfHeaderParams(kBigEndian, 8, 2, 4),
+ DwarfHeaderParams(kBigEndian, 8, 2, 8),
+ DwarfHeaderParams(kBigEndian, 8, 3, 4),
+ DwarfHeaderParams(kBigEndian, 8, 3, 8),
+ DwarfHeaderParams(kBigEndian, 8, 4, 4),
+ DwarfHeaderParams(kBigEndian, 8, 4, 8)));
+
+struct DwarfFormsFixture: public DIEFixture {
+ // Start a compilation unit, as directed by |params|, containing one
+ // childless DIE of the given tag, with one attribute of the given name
+ // and form. The 'info' fixture member is left just after the abbrev
+ // code, waiting for the attribute value to be appended.
+ void StartSingleAttributeDIE(const DwarfHeaderParams &params,
+ DwarfTag tag, DwarfAttribute name,
+ DwarfForm form) {
+ // Create the abbreviation table.
+ Label abbrev_table = abbrevs.Here();
+ abbrevs.Abbrev(1, tag, dwarf2reader::DW_children_no)
+ .Attribute(name, form)
+ .EndAbbrev()
+ .EndTable();
+
+ // Create the compilation unit, up to the attribute value.
+ info.set_format_size(params.format_size);
+ info.set_endianness(params.endianness);
+ info.Header(params.version, abbrev_table, params.address_size)
+ .ULEB128(1); // abbrev code
+ }
+
+ // Set up handler to expect a compilation unit matching |params|,
+ // containing one childless DIE of the given tag, in the sequence s. Stop
+ // just before the expectations.
+ void ExpectBeginCompilationUnit(const DwarfHeaderParams &params,
+ DwarfTag tag, uint64 offset=0) {
+ EXPECT_CALL(handler,
+ StartCompilationUnit(offset, params.address_size,
+ params.format_size, _,
+ params.version))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ EXPECT_CALL(handler, StartDIE(_, tag))
+ .InSequence(s)
+ .WillOnce(Return(true));
+ }
+
+ void ExpectEndCompilationUnit() {
+ EXPECT_CALL(handler, EndDIE(_))
+ .InSequence(s)
+ .WillOnce(Return());
+ }
+
+ void ParseCompilationUnit(const DwarfHeaderParams &params, uint64 offset=0) {
+ ByteReader byte_reader(params.endianness == kLittleEndian ?
+ ENDIANNESS_LITTLE : ENDIANNESS_BIG);
+ CompilationUnit parser("", MakeSectionMap(), offset, &byte_reader, &handler);
+ EXPECT_EQ(offset + parser.Start(), info_contents.size());
+ }
+
+ // The sequence to which the fixture's methods append expectations.
+ Sequence s;
+};
+
+struct DwarfForms: public DwarfFormsFixture,
+ public TestWithParam<DwarfHeaderParams> { };
+
+TEST_P(DwarfForms, addr) {
+ StartSingleAttributeDIE(GetParam(), dwarf2reader::DW_TAG_compile_unit,
+ dwarf2reader::DW_AT_low_pc,
+ dwarf2reader::DW_FORM_addr);
+ uint64_t value;
+ if (GetParam().address_size == 4) {
+ value = 0xc8e9ffcc;
+ info.D32(value);
+ } else {
+ value = 0xe942517fc2768564ULL;
+ info.D64(value);
+ }
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), dwarf2reader::DW_TAG_compile_unit);
+ EXPECT_CALL(handler, ProcessAttributeUnsigned(_, dwarf2reader::DW_AT_low_pc,
+ dwarf2reader::DW_FORM_addr,
+ value))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, block2_empty) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x16e4d2f7,
+ (DwarfAttribute) 0xe52c4463,
+ dwarf2reader::DW_FORM_block2);
+ info.D16(0);
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x16e4d2f7);
+ EXPECT_CALL(handler, ProcessAttributeBuffer(_, (DwarfAttribute) 0xe52c4463,
+ dwarf2reader::DW_FORM_block2,
+ _, 0))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, block2) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x16e4d2f7,
+ (DwarfAttribute) 0xe52c4463,
+ dwarf2reader::DW_FORM_block2);
+ unsigned char data[258];
+ memset(data, '*', sizeof(data));
+ info.D16(sizeof(data))
+ .Append(data, sizeof(data));
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x16e4d2f7);
+ EXPECT_CALL(handler, ProcessAttributeBuffer(_, (DwarfAttribute) 0xe52c4463,
+ dwarf2reader::DW_FORM_block2,
+ Pointee('*'), 258))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, flag_present) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x3e449ac2,
+ (DwarfAttribute) 0x359d1972,
+ dwarf2reader::DW_FORM_flag_present);
+ // DW_FORM_flag_present occupies no space in the DIE.
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x3e449ac2);
+ EXPECT_CALL(handler,
+ ProcessAttributeUnsigned(_, (DwarfAttribute) 0x359d1972,
+ dwarf2reader::DW_FORM_flag_present,
+ 1))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, sec_offset) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x1d971689,
+ (DwarfAttribute) 0xa060bfd1,
+ dwarf2reader::DW_FORM_sec_offset);
+ uint64_t value;
+ if (GetParam().format_size == 4) {
+ value = 0xacc9c388;
+ info.D32(value);
+ } else {
+ value = 0xcffe5696ffe3ed0aULL;
+ info.D64(value);
+ }
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x1d971689);
+ EXPECT_CALL(handler, ProcessAttributeUnsigned(_, (DwarfAttribute) 0xa060bfd1,
+ dwarf2reader::DW_FORM_sec_offset,
+ value))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, exprloc) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0xb6d167bb,
+ (DwarfAttribute) 0xba3ae5cb,
+ dwarf2reader::DW_FORM_exprloc);
+ info.ULEB128(29)
+ .Append(29, 173);
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0xb6d167bb);
+ EXPECT_CALL(handler, ProcessAttributeBuffer(_, (DwarfAttribute) 0xba3ae5cb,
+ dwarf2reader::DW_FORM_exprloc,
+ Pointee(173), 29))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+TEST_P(DwarfForms, ref_sig8) {
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x253e7b2b,
+ (DwarfAttribute) 0xd708d908,
+ dwarf2reader::DW_FORM_ref_sig8);
+ info.D64(0xf72fa0cb6ddcf9d6ULL);
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x253e7b2b);
+ EXPECT_CALL(handler, ProcessAttributeSignature(_, (DwarfAttribute) 0xd708d908,
+ dwarf2reader::DW_FORM_ref_sig8,
+ 0xf72fa0cb6ddcf9d6ULL))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam());
+}
+
+// A value passed to ProcessAttributeSignature is just an absolute number,
+// not an offset within the compilation unit as most of the other
+// DW_FORM_ref forms are. Check that the reader doesn't try to apply any
+// offset to the signature, by reading it from a compilation unit that does
+// not start at the beginning of the section.
+TEST_P(DwarfForms, ref_sig8_not_first) {
+ info.Append(98, '*');
+ StartSingleAttributeDIE(GetParam(), (DwarfTag) 0x253e7b2b,
+ (DwarfAttribute) 0xd708d908,
+ dwarf2reader::DW_FORM_ref_sig8);
+ info.D64(0xf72fa0cb6ddcf9d6ULL);
+ info.Finish();
+
+ ExpectBeginCompilationUnit(GetParam(), (DwarfTag) 0x253e7b2b, 98);
+ EXPECT_CALL(handler, ProcessAttributeSignature(_, (DwarfAttribute) 0xd708d908,
+ dwarf2reader::DW_FORM_ref_sig8,
+ 0xf72fa0cb6ddcf9d6ULL))
+ .InSequence(s)
+ .WillOnce(Return());
+ ExpectEndCompilationUnit();
+
+ ParseCompilationUnit(GetParam(), 98);
+}
+
+// Tests for the other attribute forms could go here.
+
+INSTANTIATE_TEST_CASE_P(
+ HeaderVariants, DwarfForms,
+ ::testing::Values(DwarfHeaderParams(kLittleEndian, 4, 2, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 2, 8),
+ DwarfHeaderParams(kLittleEndian, 4, 3, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 3, 8),
+ DwarfHeaderParams(kLittleEndian, 4, 4, 4),
+ DwarfHeaderParams(kLittleEndian, 4, 4, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 2, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 2, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 3, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 3, 8),
+ DwarfHeaderParams(kLittleEndian, 8, 4, 4),
+ DwarfHeaderParams(kLittleEndian, 8, 4, 8),
+ DwarfHeaderParams(kBigEndian, 4, 2, 4),
+ DwarfHeaderParams(kBigEndian, 4, 2, 8),
+ DwarfHeaderParams(kBigEndian, 4, 3, 4),
+ DwarfHeaderParams(kBigEndian, 4, 3, 8),
+ DwarfHeaderParams(kBigEndian, 4, 4, 4),
+ DwarfHeaderParams(kBigEndian, 4, 4, 8),
+ DwarfHeaderParams(kBigEndian, 8, 2, 4),
+ DwarfHeaderParams(kBigEndian, 8, 2, 8),
+ DwarfHeaderParams(kBigEndian, 8, 3, 4),
+ DwarfHeaderParams(kBigEndian, 8, 3, 8),
+ DwarfHeaderParams(kBigEndian, 8, 4, 4),
+ DwarfHeaderParams(kBigEndian, 8, 4, 8)));
diff --git a/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_test_common.h b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_test_common.h
new file mode 100644
index 0000000..e91de90
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/dwarf2reader_test_common.h
@@ -0,0 +1,149 @@
+// -*- mode: c++ -*-
+
+// Copyright (c) 2012, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Original author: Jim Blandy <jimb@mozilla.com> <jimb@red-bean.com>
+
+// dwarf2reader_test_common.h: Define TestCompilationUnit and
+// TestAbbrevTable, classes for creating properly (and improperly)
+// formatted DWARF compilation unit data for unit tests.
+
+#ifndef COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
+#define COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
+
+#include "common/test_assembler.h"
+#include "common/dwarf/dwarf2enums.h"
+
+// A subclass of test_assembler::Section, specialized for constructing
+// DWARF compilation units.
+class TestCompilationUnit: public google_breakpad::test_assembler::Section {
+ public:
+ typedef dwarf2reader::DwarfTag DwarfTag;
+ typedef dwarf2reader::DwarfAttribute DwarfAttribute;
+ typedef dwarf2reader::DwarfForm DwarfForm;
+ typedef google_breakpad::test_assembler::Label Label;
+
+ // Set the section's DWARF format size (the 32-bit DWARF format or the
+ // 64-bit DWARF format, for lengths and section offsets --- not the
+ // address size) to format_size.
+ void set_format_size(size_t format_size) {
+ assert(format_size == 4 || format_size == 8);
+ format_size_ = format_size;
+ }
+
+ // Append a DWARF section offset value, of the appropriate size for this
+ // compilation unit.
+ template<typename T>
+ void SectionOffset(T offset) {
+ if (format_size_ == 4)
+ D32(offset);
+ else
+ D64(offset);
+ }
+
+ // Append a DWARF compilation unit header to the section, with the given
+ // DWARF version, abbrev table offset, and address size.
+ TestCompilationUnit &Header(int version, const Label &abbrev_offset,
+ size_t address_size) {
+ if (format_size_ == 4) {
+ D32(length_);
+ } else {
+ D32(0xffffffff);
+ D64(length_);
+ }
+ post_length_offset_ = Size();
+ D16(version);
+ SectionOffset(abbrev_offset);
+ D8(address_size);
+ return *this;
+ }
+
+ // Mark the end of this header's DIEs.
+ TestCompilationUnit &Finish() {
+ length_ = Size() - post_length_offset_;
+ return *this;
+ }
+
+ private:
+ // The DWARF format size for this compilation unit.
+ size_t format_size_;
+
+ // The offset of the point in the compilation unit header immediately
+ // after the initial length field.
+ uint64_t post_length_offset_;
+
+ // The length of the compilation unit, not including the initial length field.
+ Label length_;
+};
+
+// A subclass of test_assembler::Section specialized for constructing DWARF
+// abbreviation tables.
+class TestAbbrevTable: public google_breakpad::test_assembler::Section {
+ public:
+ typedef dwarf2reader::DwarfTag DwarfTag;
+ typedef dwarf2reader::DwarfAttribute DwarfAttribute;
+ typedef dwarf2reader::DwarfForm DwarfForm;
+ typedef dwarf2reader::DwarfHasChild DwarfHasChild;
+ typedef google_breakpad::test_assembler::Label Label;
+
+ // Start a new abbreviation table entry for abbreviation code |code|,
+ // encoding a DIE whose tag is |tag|, and which has children if and only
+ // if |has_children| is true.
+ TestAbbrevTable &Abbrev(int code, DwarfTag tag, DwarfHasChild has_children) {
+ assert(code != 0);
+ ULEB128(code);
+ ULEB128(static_cast<unsigned>(tag));
+ D8(static_cast<unsigned>(has_children));
+ return *this;
+ };
+
+ // Add an attribute to the current abbreviation code whose name is |name|
+ // and whose form is |form|.
+ TestAbbrevTable &Attribute(DwarfAttribute name, DwarfForm form) {
+ ULEB128(static_cast<unsigned>(name));
+ ULEB128(static_cast<unsigned>(form));
+ return *this;
+ }
+
+ // Finish the current abbreviation code.
+ TestAbbrevTable &EndAbbrev() {
+ ULEB128(0);
+ ULEB128(0);
+ return *this;
+ }
+
+ // Finish the current abbreviation table.
+ TestAbbrevTable &EndTable() {
+ ULEB128(0);
+ return *this;
+ }
+};
+
+#endif // COMMON_DWARF_DWARF2READER_TEST_COMMON_H__
diff --git a/3rdParty/Breakpad/src/common/dwarf/elf_reader.cc b/3rdParty/Breakpad/src/common/dwarf/elf_reader.cc
new file mode 100644
index 0000000..4135a51
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/elf_reader.cc
@@ -0,0 +1,1273 @@
+// Copyright 2005 Google Inc. All Rights Reserved.
+// Author: chatham@google.com (Andrew Chatham)
+// Author: satorux@google.com (Satoru Takabayashi)
+//
+// Code for reading in ELF files.
+//
+// For information on the ELF format, see
+// http://www.x86.org/ftp/manuals/tools/elf.pdf
+//
+// I also liked:
+// http://www.caldera.com/developers/gabi/1998-04-29/contents.html
+//
+// A note about types: When dealing with the file format, we use types
+// like Elf32_Word, but in the public interfaces we treat all
+// addresses as uint64. As a result, we should be able to symbolize
+// 64-bit binaries from a 32-bit process (which we don't do,
+// anyway). size_t should therefore be avoided, except where required
+// by things like mmap().
+//
+// Although most of this code can deal with arbitrary ELF files of
+// either word size, the public ElfReader interface only examines
+// files loaded into the current address space, which must all match
+// __WORDSIZE. This code cannot handle ELF files with a non-native
+// byte ordering.
+//
+// TODO(chatham): It would be nice if we could accomplish this task
+// without using malloc(), so we could use it as the process is dying.
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE // needed for pread()
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <string.h>
+
+#include <algorithm>
+#include <map>
+#include <string>
+#include <vector>
+// TODO(saugustine): Add support for compressed debug.
+// Also need to add configure tests for zlib.
+//#include "zlib.h"
+
+#include "third_party/musl/include/elf.h"
+#include "elf_reader.h"
+#include "common/using_std_string.h"
+
+// EM_AARCH64 is not defined by elf.h of GRTE v3 on x86.
+// TODO(dougkwan): Remove this when v17 is retired.
+#if !defined(EM_AARCH64)
+#define EM_AARCH64 183 /* ARM AARCH64 */
+#endif
+
+// Map Linux macros to their Apple equivalents.
+#if __APPLE__
+#ifndef __LITTLE_ENDIAN
+#define __LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__
+#endif // __LITTLE_ENDIAN
+#ifndef __BIG_ENDIAN
+#define __BIG_ENDIAN __ORDER_BIG_ENDIAN__
+#endif // __BIG_ENDIAN
+#ifndef __BYTE_ORDER
+#define __BYTE_ORDER __BYTE_ORDER__
+#endif // __BYTE_ORDER
+#endif // __APPLE__
+
+// TODO(dthomson): Can be removed once all Java code is using the Google3
+// launcher. We need to avoid processing PLT functions as it causes memory
+// fragmentation in malloc, which is fixed in tcmalloc - and if the Google3
+// launcher is used the JVM will then use tcmalloc. b/13735638
+//DEFINE_bool(elfreader_process_dynsyms, true,
+// "Activate PLT function processing");
+
+using std::vector;
+
+namespace {
+
+// The lowest bit of an ARM symbol value is used to indicate a Thumb address.
+const int kARMThumbBitOffset = 0;
+
+// Converts an ARM Thumb symbol value to a true aligned address value.
+template <typename T>
+T AdjustARMThumbSymbolValue(const T& symbol_table_value) {
+ return symbol_table_value & ~(1 << kARMThumbBitOffset);
+}
+
+// Names of PLT-related sections.
+const char kElfPLTRelSectionName[] = ".rel.plt"; // Use Rel struct.
+const char kElfPLTRelaSectionName[] = ".rela.plt"; // Use Rela struct.
+const char kElfPLTSectionName[] = ".plt";
+const char kElfDynSymSectionName[] = ".dynsym";
+
+const int kX86PLTCodeSize = 0x10; // Size of one x86 PLT function in bytes.
+const int kARMPLTCodeSize = 0xc;
+const int kAARCH64PLTCodeSize = 0x10;
+
+const int kX86PLT0Size = 0x10; // Size of the special PLT0 entry.
+const int kARMPLT0Size = 0x14;
+const int kAARCH64PLT0Size = 0x20;
+
+// Suffix for PLT functions when it needs to be explicitly identified as such.
+const char kPLTFunctionSuffix[] = "@plt";
+
+} // namespace
+
+namespace dwarf2reader {
+
+template <class ElfArch> class ElfReaderImpl;
+
+// 32-bit and 64-bit ELF files are processed exactly the same, except
+// for various field sizes. Elf32 and Elf64 encompass all of the
+// differences between the two formats, and all format-specific code
+// in this file is templated on one of them.
+class Elf32 {
+ public:
+ typedef Elf32_Ehdr Ehdr;
+ typedef Elf32_Shdr Shdr;
+ typedef Elf32_Phdr Phdr;
+ typedef Elf32_Word Word;
+ typedef Elf32_Sym Sym;
+ typedef Elf32_Rel Rel;
+ typedef Elf32_Rela Rela;
+
+ // What should be in the EI_CLASS header.
+ static const int kElfClass = ELFCLASS32;
+
+ // Given a symbol pointer, return the binding type (eg STB_WEAK).
+ static char Bind(const Elf32_Sym *sym) {
+ return ELF32_ST_BIND(sym->st_info);
+ }
+ // Given a symbol pointer, return the symbol type (eg STT_FUNC).
+ static char Type(const Elf32_Sym *sym) {
+ return ELF32_ST_TYPE(sym->st_info);
+ }
+
+ // Extract the symbol index from the r_info field of a relocation.
+ static int r_sym(const Elf32_Word r_info) {
+ return ELF32_R_SYM(r_info);
+ }
+};
+
+
+class Elf64 {
+ public:
+ typedef Elf64_Ehdr Ehdr;
+ typedef Elf64_Shdr Shdr;
+ typedef Elf64_Phdr Phdr;
+ typedef Elf64_Word Word;
+ typedef Elf64_Sym Sym;
+ typedef Elf64_Rel Rel;
+ typedef Elf64_Rela Rela;
+
+ // What should be in the EI_CLASS header.
+ static const int kElfClass = ELFCLASS64;
+
+ static char Bind(const Elf64_Sym *sym) {
+ return ELF64_ST_BIND(sym->st_info);
+ }
+ static char Type(const Elf64_Sym *sym) {
+ return ELF64_ST_TYPE(sym->st_info);
+ }
+ static int r_sym(const Elf64_Xword r_info) {
+ return ELF64_R_SYM(r_info);
+ }
+};
+
+
+// ElfSectionReader mmaps a section of an ELF file ("section" is ELF
+// terminology). The ElfReaderImpl object providing the section header
+// must exist for the lifetime of this object.
+//
+// The motivation for mmaping individual sections of the file is that
+// many Google executables are large enough when unstripped that we
+// have to worry about running out of virtual address space.
+//
+// For compressed sections we have no choice but to allocate memory.
+template<class ElfArch>
+class ElfSectionReader {
+ public:
+ ElfSectionReader(const char *name, const string &path, int fd,
+ const typename ElfArch::Shdr &section_header)
+ : contents_aligned_(NULL),
+ contents_(NULL),
+ header_(section_header) {
+ // Back up to the beginning of the page we're interested in.
+ const size_t additional = header_.sh_offset % getpagesize();
+ const size_t offset_aligned = header_.sh_offset - additional;
+ section_size_ = header_.sh_size;
+ size_aligned_ = section_size_ + additional;
+ // If the section has been stripped or is empty, do not attempt
+ // to process its contents.
+ if (header_.sh_type == SHT_NOBITS || header_.sh_size == 0)
+ return;
+ contents_aligned_ = mmap(NULL, size_aligned_, PROT_READ, MAP_SHARED,
+ fd, offset_aligned);
+ // Set where the offset really should begin.
+ contents_ = reinterpret_cast<char *>(contents_aligned_) +
+ (header_.sh_offset - offset_aligned);
+
+ // Check for and handle any compressed contents.
+ //if (strncmp(name, ".zdebug_", strlen(".zdebug_")) == 0)
+ // DecompressZlibContents();
+ // TODO(saugustine): Add support for proposed elf-section flag
+ // "SHF_COMPRESS".
+ }
+
+ ~ElfSectionReader() {
+ if (contents_aligned_ != NULL)
+ munmap(contents_aligned_, size_aligned_);
+ else
+ delete[] contents_;
+ }
+
+ // Return the section header for this section.
+ typename ElfArch::Shdr const &header() const { return header_; }
+
+ // Return memory at the given offset within this section.
+ const char *GetOffset(typename ElfArch::Word bytes) const {
+ return contents_ + bytes;
+ }
+
+ const char *contents() const { return contents_; }
+ size_t section_size() const { return section_size_; }
+
+ private:
+ // page-aligned file contents
+ void *contents_aligned_;
+ // contents as usable by the client. For non-compressed sections,
+ // pointer within contents_aligned_ to where the section data
+ // begins; for compressed sections, pointer to the decompressed
+ // data.
+ char *contents_;
+ // size of contents_aligned_
+ size_t size_aligned_;
+ // size of contents.
+ size_t section_size_;
+ const typename ElfArch::Shdr header_;
+};
+
+// An iterator over symbols in a given section. It handles walking
+// through the entries in the specified section and mapping symbol
+// entries to their names in the appropriate string table (in
+// another section).
+template<class ElfArch>
+class SymbolIterator {
+ public:
+ SymbolIterator(ElfReaderImpl<ElfArch> *reader,
+ typename ElfArch::Word section_type)
+ : symbol_section_(reader->GetSectionByType(section_type)),
+ string_section_(NULL),
+ num_symbols_in_section_(0),
+ symbol_within_section_(0) {
+
+ // If this section type doesn't exist, leave
+ // num_symbols_in_section_ as zero, so this iterator is already
+ // done().
+ if (symbol_section_ != NULL) {
+ num_symbols_in_section_ = symbol_section_->header().sh_size /
+ symbol_section_->header().sh_entsize;
+
+ // Symbol sections have sh_link set to the section number of
+ // the string section containing the symbol names.
+ string_section_ = reader->GetSection(symbol_section_->header().sh_link);
+ }
+ }
+
+ // Return true iff we have passed all symbols in this section.
+ bool done() const {
+ return symbol_within_section_ >= num_symbols_in_section_;
+ }
+
+ // Advance to the next symbol in this section.
+ // REQUIRES: !done()
+ void Next() { ++symbol_within_section_; }
+
+ // Return a pointer to the current symbol.
+ // REQUIRES: !done()
+ const typename ElfArch::Sym *GetSymbol() const {
+ return reinterpret_cast<const typename ElfArch::Sym*>(
+ symbol_section_->GetOffset(symbol_within_section_ *
+ symbol_section_->header().sh_entsize));
+ }
+
+ // Return the name of the current symbol, NULL if it has none.
+ // REQUIRES: !done()
+ const char *GetSymbolName() const {
+ int name_offset = GetSymbol()->st_name;
+ if (name_offset == 0)
+ return NULL;
+ return string_section_->GetOffset(name_offset);
+ }
+
+ int GetCurrentSymbolIndex() const {
+ return symbol_within_section_;
+ }
+
+ private:
+ const ElfSectionReader<ElfArch> *const symbol_section_;
+ const ElfSectionReader<ElfArch> *string_section_;
+ int num_symbols_in_section_;
+ int symbol_within_section_;
+};
+
+
+// Copied from strings/strutil.h. Per chatham,
+// this library should not depend on strings.
+
+static inline bool MyHasSuffixString(const string& str, const string& suffix) {
+ int len = str.length();
+ int suflen = suffix.length();
+ return (suflen <= len) && (str.compare(len-suflen, suflen, suffix) == 0);
+}
+
+
+// ElfReader loads an ELF binary and can provide information about its
+// contents. It is most useful for matching addresses to function
+// names. It does not understand debugging formats (eg dwarf2), so it
+// can't print line numbers. It takes a path to an elf file and a
+// readable file descriptor for that file, which it does not assume
+// ownership of.
+template<class ElfArch>
+class ElfReaderImpl {
+ public:
+ explicit ElfReaderImpl(const string &path, int fd)
+ : path_(path),
+ fd_(fd),
+ section_headers_(NULL),
+ program_headers_(NULL),
+ opd_section_(NULL),
+ base_for_text_(0),
+ plts_supported_(false),
+ plt_code_size_(0),
+ plt0_size_(0),
+ visited_relocation_entries_(false) {
+ string error;
+ is_dwp_ = MyHasSuffixString(path, ".dwp");
+ ParseHeaders(fd, path);
+ // Currently we need some extra information for PowerPC64 binaries
+ // including a way to read the .opd section for function descriptors and a
+ // way to find the linked base for function symbols.
+ if (header_.e_machine == EM_PPC64) {
+ // "opd_section_" must always be checked for NULL before use.
+ opd_section_ = GetSectionInfoByName(".opd", &opd_info_);
+ for (unsigned int k = 0u; k < GetNumSections(); ++k) {
+ const char *name = GetSectionName(section_headers_[k].sh_name);
+ if (strncmp(name, ".text", strlen(".text")) == 0) {
+ base_for_text_ =
+ section_headers_[k].sh_addr - section_headers_[k].sh_offset;
+ break;
+ }
+ }
+ }
+ // Turn on PLTs.
+ if (header_.e_machine == EM_386 || header_.e_machine == EM_X86_64) {
+ plt_code_size_ = kX86PLTCodeSize;
+ plt0_size_ = kX86PLT0Size;
+ plts_supported_ = true;
+ } else if (header_.e_machine == EM_ARM) {
+ plt_code_size_ = kARMPLTCodeSize;
+ plt0_size_ = kARMPLT0Size;
+ plts_supported_ = true;
+ } else if (header_.e_machine == EM_AARCH64) {
+ plt_code_size_ = kAARCH64PLTCodeSize;
+ plt0_size_ = kAARCH64PLT0Size;
+ plts_supported_ = true;
+ }
+ }
+
+ ~ElfReaderImpl() {
+ for (unsigned int i = 0u; i < sections_.size(); ++i)
+ delete sections_[i];
+ delete [] section_headers_;
+ delete [] program_headers_;
+ }
+
+ // Examine the headers of the file and return whether the file looks
+ // like an ELF file for this architecture. Takes an already-open
+ // file descriptor for the candidate file, reading in the prologue
+ // to see if the ELF file appears to match the current
+ // architecture. If error is non-NULL, it will be set with a reason
+ // in case of failure.
+ static bool IsArchElfFile(int fd, string *error) {
+ unsigned char header[EI_NIDENT];
+ if (pread(fd, header, sizeof(header), 0) != sizeof(header)) {
+ if (error != NULL) *error = "Could not read header";
+ return false;
+ }
+
+ if (memcmp(header, ELFMAG, SELFMAG) != 0) {
+ if (error != NULL) *error = "Missing ELF magic";
+ return false;
+ }
+
+ if (header[EI_CLASS] != ElfArch::kElfClass) {
+ if (error != NULL) *error = "Different word size";
+ return false;
+ }
+
+ int endian = 0;
+ if (header[EI_DATA] == ELFDATA2LSB)
+ endian = __LITTLE_ENDIAN;
+ else if (header[EI_DATA] == ELFDATA2MSB)
+ endian = __BIG_ENDIAN;
+ if (endian != __BYTE_ORDER) {
+ if (error != NULL) *error = "Different byte order";
+ return false;
+ }
+
+ return true;
+ }
+
+ // Return true if we can use this symbol in Address-to-Symbol map.
+ bool CanUseSymbol(const char *name, const typename ElfArch::Sym *sym) {
+ // For now we only save FUNC and NOTYPE symbols. For now we just
+ // care about functions, but some functions written in assembler
+ // don't have a proper ELF type attached to them, so we store
+ // NOTYPE symbols as well. The remaining significant type is
+ // OBJECT (eg global variables), which represent about 25% of
+ // the symbols in a typical google3 binary.
+ if (ElfArch::Type(sym) != STT_FUNC &&
+ ElfArch::Type(sym) != STT_NOTYPE) {
+ return false;
+ }
+
+ // Target specific filtering.
+ switch (header_.e_machine) {
+ case EM_AARCH64:
+ case EM_ARM:
+ // Filter out '$x' special local symbols used by tools
+ return name[0] != '$' || ElfArch::Bind(sym) != STB_LOCAL;
+ case EM_X86_64:
+ // Filter out read-only constants like .LC123.
+ return name[0] != '.' || ElfArch::Bind(sym) != STB_LOCAL;
+ default:
+ return true;
+ }
+ }
+
+ // Iterate over the symbols in a section, either SHT_DYNSYM or
+ // SHT_SYMTAB. Add all symbols to the given SymbolMap.
+ /*
+ void GetSymbolPositions(SymbolMap *symbols,
+ typename ElfArch::Word section_type,
+ uint64 mem_offset,
+ uint64 file_offset) {
+ // This map is used to filter out "nested" functions.
+ // See comment below.
+ AddrToSymMap addr_to_sym_map;
+ for (SymbolIterator<ElfArch> it(this, section_type);
+ !it.done(); it.Next()) {
+ const char *name = it.GetSymbolName();
+ if (name == NULL)
+ continue;
+ const typename ElfArch::Sym *sym = it.GetSymbol();
+ if (CanUseSymbol(name, sym)) {
+ const int sec = sym->st_shndx;
+
+ // We don't support special section indices. The most common
+ // is SHN_ABS, for absolute symbols used deep in the bowels of
+ // glibc. Also ignore any undefined symbols.
+ if (sec == SHN_UNDEF ||
+ (sec >= SHN_LORESERVE && sec <= SHN_HIRESERVE)) {
+ continue;
+ }
+
+ const typename ElfArch::Shdr& hdr = section_headers_[sec];
+
+ // Adjust for difference between where we expected to mmap
+ // this section, and where it was actually mmapped.
+ const int64 expected_base = hdr.sh_addr - hdr.sh_offset;
+ const int64 real_base = mem_offset - file_offset;
+ const int64 adjust = real_base - expected_base;
+
+ uint64 start = sym->st_value + adjust;
+
+ // Adjust function symbols for PowerPC64 by dereferencing and adjusting
+ // the function descriptor to get the function address.
+ if (header_.e_machine == EM_PPC64 && ElfArch::Type(sym) == STT_FUNC) {
+ const uint64 opd_addr =
+ AdjustPPC64FunctionDescriptorSymbolValue(sym->st_value);
+ // Only adjust the returned value if the function address was found.
+ if (opd_addr != sym->st_value) {
+ const int64 adjust_function_symbols =
+ real_base - base_for_text_;
+ start = opd_addr + adjust_function_symbols;
+ }
+ }
+
+ addr_to_sym_map.push_back(std::make_pair(start, sym));
+ }
+ }
+ std::sort(addr_to_sym_map.begin(), addr_to_sym_map.end(), &AddrToSymSorter);
+ addr_to_sym_map.erase(std::unique(addr_to_sym_map.begin(),
+ addr_to_sym_map.end(), &AddrToSymEquals),
+ addr_to_sym_map.end());
+
+ // Squeeze out any "nested functions".
+ // Nested functions are not allowed in C, but libc plays tricks.
+ //
+ // For example, here is disassembly of /lib64/tls/libc-2.3.5.so:
+ // 0x00000000000aa380 <read+0>: cmpl $0x0,0x2781b9(%rip)
+ // 0x00000000000aa387 <read+7>: jne 0xaa39b <read+27>
+ // 0x00000000000aa389 <__read_nocancel+0>: mov $0x0,%rax
+ // 0x00000000000aa390 <__read_nocancel+7>: syscall
+ // 0x00000000000aa392 <__read_nocancel+9>: cmp $0xfffffffffffff001,%rax
+ // 0x00000000000aa398 <__read_nocancel+15>: jae 0xaa3ef <read+111>
+ // 0x00000000000aa39a <__read_nocancel+17>: retq
+ // 0x00000000000aa39b <read+27>: sub $0x28,%rsp
+ // 0x00000000000aa39f <read+31>: mov %rdi,0x8(%rsp)
+ // ...
+ // Without removing __read_nocancel, symbolizer will return NULL
+ // given e.g. 0xaa39f (because the lower bound is __read_nocancel,
+ // but 0xaa39f is beyond its end.
+ if (addr_to_sym_map.empty()) {
+ return;
+ }
+ const ElfSectionReader<ElfArch> *const symbol_section =
+ this->GetSectionByType(section_type);
+ const ElfSectionReader<ElfArch> *const string_section =
+ this->GetSection(symbol_section->header().sh_link);
+
+ typename AddrToSymMap::iterator curr = addr_to_sym_map.begin();
+ // Always insert the first symbol.
+ symbols->AddSymbol(string_section->GetOffset(curr->second->st_name),
+ curr->first, curr->second->st_size);
+ typename AddrToSymMap::iterator prev = curr++;
+ for (; curr != addr_to_sym_map.end(); ++curr) {
+ const uint64 prev_addr = prev->first;
+ const uint64 curr_addr = curr->first;
+ const typename ElfArch::Sym *const prev_sym = prev->second;
+ const typename ElfArch::Sym *const curr_sym = curr->second;
+ if (prev_addr + prev_sym->st_size <= curr_addr ||
+ // The next condition is true if two symbols overlap like this:
+ //
+ // Previous symbol |----------------------------|
+ // Current symbol |-------------------------------|
+ //
+ // These symbols are not found in google3 codebase, but in
+ // jdk1.6.0_01_gg1/jre/lib/i386/server/libjvm.so.
+ //
+ // 0619e040 00000046 t CardTableModRefBS::write_region_work()
+ // 0619e070 00000046 t CardTableModRefBS::write_ref_array_work()
+ //
+ // We allow overlapped symbols rather than ignore these.
+ // Due to the way SymbolMap::GetSymbolAtPosition() works,
+ // lookup for any address in [curr_addr, curr_addr + its size)
+ // (e.g. 0619e071) will produce the current symbol,
+ // which is the desired outcome.
+ prev_addr + prev_sym->st_size < curr_addr + curr_sym->st_size) {
+ const char *name = string_section->GetOffset(curr_sym->st_name);
+ symbols->AddSymbol(name, curr_addr, curr_sym->st_size);
+ prev = curr;
+ } else {
+ // Current symbol is "nested" inside previous one like this:
+ //
+ // Previous symbol |----------------------------|
+ // Current symbol |---------------------|
+ //
+ // This happens within glibc, e.g. __read_nocancel is nested
+ // "inside" __read. Ignore "inner" symbol.
+ //DCHECK_LE(curr_addr + curr_sym->st_size,
+ // prev_addr + prev_sym->st_size);
+ ;
+ }
+ }
+ }
+*/
+
+ void VisitSymbols(typename ElfArch::Word section_type,
+ ElfReader::SymbolSink *sink) {
+ VisitSymbols(section_type, sink, -1, -1, false);
+ }
+
+ void VisitSymbols(typename ElfArch::Word section_type,
+ ElfReader::SymbolSink *sink,
+ int symbol_binding,
+ int symbol_type,
+ bool get_raw_symbol_values) {
+ for (SymbolIterator<ElfArch> it(this, section_type);
+ !it.done(); it.Next()) {
+ const char *name = it.GetSymbolName();
+ if (!name) continue;
+ const typename ElfArch::Sym *sym = it.GetSymbol();
+ if ((symbol_binding < 0 || ElfArch::Bind(sym) == symbol_binding) &&
+ (symbol_type < 0 || ElfArch::Type(sym) == symbol_type)) {
+ typename ElfArch::Sym symbol = *sym;
+ // Add a PLT symbol in addition to the main undefined symbol.
+ // Only do this for SHT_DYNSYM, because PLT symbols are dynamic.
+ int symbol_index = it.GetCurrentSymbolIndex();
+ // TODO(dthomson): Can be removed once all Java code is using the
+ // Google3 launcher.
+ if (section_type == SHT_DYNSYM &&
+ static_cast<unsigned int>(symbol_index) < symbols_plt_offsets_.size() &&
+ symbols_plt_offsets_[symbol_index] != 0) {
+ string plt_name = string(name) + kPLTFunctionSuffix;
+ if (plt_function_names_[symbol_index].empty()) {
+ plt_function_names_[symbol_index] = plt_name;
+ } else if (plt_function_names_[symbol_index] != plt_name) {
+ ;
+ }
+ sink->AddSymbol(plt_function_names_[symbol_index].c_str(),
+ symbols_plt_offsets_[it.GetCurrentSymbolIndex()],
+ plt_code_size_);
+ }
+ if (!get_raw_symbol_values)
+ AdjustSymbolValue(&symbol);
+ sink->AddSymbol(name, symbol.st_value, symbol.st_size);
+ }
+ }
+ }
+
+ void VisitRelocationEntries() {
+ if (visited_relocation_entries_) {
+ return;
+ }
+ visited_relocation_entries_ = true;
+
+ if (!plts_supported_) {
+ return;
+ }
+ // First determine if PLTs exist. If not, then there is nothing to do.
+ ElfReader::SectionInfo plt_section_info;
+ const char* plt_section =
+ GetSectionInfoByName(kElfPLTSectionName, &plt_section_info);
+ if (!plt_section) {
+ return;
+ }
+ if (plt_section_info.size == 0) {
+ return;
+ }
+
+ // The PLTs could be referenced by either a Rel or Rela (Rel with Addend)
+ // section.
+ ElfReader::SectionInfo rel_section_info;
+ ElfReader::SectionInfo rela_section_info;
+ const char* rel_section =
+ GetSectionInfoByName(kElfPLTRelSectionName, &rel_section_info);
+ const char* rela_section =
+ GetSectionInfoByName(kElfPLTRelaSectionName, &rela_section_info);
+
+ const typename ElfArch::Rel* rel =
+ reinterpret_cast<const typename ElfArch::Rel*>(rel_section);
+ const typename ElfArch::Rela* rela =
+ reinterpret_cast<const typename ElfArch::Rela*>(rela_section);
+
+ if (!rel_section && !rela_section) {
+ return;
+ }
+
+ // Use either Rel or Rela section, depending on which one exists.
+ size_t section_size = rel_section ? rel_section_info.size
+ : rela_section_info.size;
+ size_t entry_size = rel_section ? sizeof(typename ElfArch::Rel)
+ : sizeof(typename ElfArch::Rela);
+
+ // Determine the number of entries in the dynamic symbol table.
+ ElfReader::SectionInfo dynsym_section_info;
+ const char* dynsym_section =
+ GetSectionInfoByName(kElfDynSymSectionName, &dynsym_section_info);
+ // The dynsym section might not exist, or it might be empty. In either case
+ // there is nothing to be done so return.
+ if (!dynsym_section || dynsym_section_info.size == 0) {
+ return;
+ }
+ size_t num_dynamic_symbols =
+ dynsym_section_info.size / dynsym_section_info.entsize;
+ symbols_plt_offsets_.resize(num_dynamic_symbols, 0);
+
+ // TODO(dthomson): Can be removed once all Java code is using the
+ // Google3 launcher.
+ // Make storage room for PLT function name strings.
+ plt_function_names_.resize(num_dynamic_symbols);
+
+ for (size_t i = 0; i < section_size / entry_size; ++i) {
+ // Determine symbol index from the |r_info| field.
+ int sym_index = ElfArch::r_sym(rel_section ? rel[i].r_info
+ : rela[i].r_info);
+ if (static_cast<unsigned int>(sym_index) >= symbols_plt_offsets_.size()) {
+ continue;
+ }
+ symbols_plt_offsets_[sym_index] =
+ plt_section_info.addr + plt0_size_ + i * plt_code_size_;
+ }
+ }
+
+ // Return an ElfSectionReader for the first section of the given
+ // type by iterating through all section headers. Returns NULL if
+ // the section type is not found.
+ const ElfSectionReader<ElfArch> *GetSectionByType(
+ typename ElfArch::Word section_type) {
+ for (unsigned int k = 0u; k < GetNumSections(); ++k) {
+ if (section_headers_[k].sh_type == section_type) {
+ return GetSection(k);
+ }
+ }
+ return NULL;
+ }
+
+ // Return the name of section "shndx". Returns NULL if the section
+ // is not found.
+ const char *GetSectionNameByIndex(int shndx) {
+ return GetSectionName(section_headers_[shndx].sh_name);
+ }
+
+ // Return a pointer to section "shndx", and store the size in
+ // "size". Returns NULL if the section is not found.
+ const char *GetSectionContentsByIndex(int shndx, size_t *size) {
+ const ElfSectionReader<ElfArch> *section = GetSection(shndx);
+ if (section != NULL) {
+ *size = section->section_size();
+ return section->contents();
+ }
+ return NULL;
+ }
+
+ // Return a pointer to the first section of the given name by
+ // iterating through all section headers, and store the size in
+ // "size". Returns NULL if the section name is not found.
+ const char *GetSectionContentsByName(const string &section_name,
+ size_t *size) {
+ for (unsigned int k = 0u; k < GetNumSections(); ++k) {
+ // When searching for sections in a .dwp file, the sections
+ // we're looking for will always be at the end of the section
+ // table, so reverse the direction of iteration.
+ int shndx = is_dwp_ ? GetNumSections() - k - 1 : k;
+ const char *name = GetSectionName(section_headers_[shndx].sh_name);
+ if (name != NULL && ElfReader::SectionNamesMatch(section_name, name)) {
+ const ElfSectionReader<ElfArch> *section = GetSection(shndx);
+ if (section == NULL) {
+ return NULL;
+ } else {
+ *size = section->section_size();
+ return section->contents();
+ }
+ }
+ }
+ return NULL;
+ }
+
+ // This is like GetSectionContentsByName() but it returns a lot of extra
+ // information about the section.
+ const char *GetSectionInfoByName(const string &section_name,
+ ElfReader::SectionInfo *info) {
+ for (unsigned int k = 0u; k < GetNumSections(); ++k) {
+ // When searching for sections in a .dwp file, the sections
+ // we're looking for will always be at the end of the section
+ // table, so reverse the direction of iteration.
+ int shndx = is_dwp_ ? GetNumSections() - k - 1 : k;
+ const char *name = GetSectionName(section_headers_[shndx].sh_name);
+ if (name != NULL && ElfReader::SectionNamesMatch(section_name, name)) {
+ const ElfSectionReader<ElfArch> *section = GetSection(shndx);
+ if (section == NULL) {
+ return NULL;
+ } else {
+ info->type = section->header().sh_type;
+ info->flags = section->header().sh_flags;
+ info->addr = section->header().sh_addr;
+ info->offset = section->header().sh_offset;
+ info->size = section->header().sh_size;
+ info->link = section->header().sh_link;
+ info->info = section->header().sh_info;
+ info->addralign = section->header().sh_addralign;
+ info->entsize = section->header().sh_entsize;
+ return section->contents();
+ }
+ }
+ }
+ return NULL;
+ }
+
+ // p_vaddr of the first PT_LOAD segment (if any), or 0 if no PT_LOAD
+ // segments are present. This is the address an ELF image was linked
+ // (by static linker) to be loaded at. Usually (but not always) 0 for
+ // shared libraries and position-independent executables.
+ uint64 VaddrOfFirstLoadSegment() const {
+ // Relocatable objects (of type ET_REL) do not have LOAD segments.
+ if (header_.e_type == ET_REL) {
+ return 0;
+ }
+ for (int i = 0; i < GetNumProgramHeaders(); ++i) {
+ if (program_headers_[i].p_type == PT_LOAD) {
+ return program_headers_[i].p_vaddr;
+ }
+ }
+ return 0;
+ }
+
+ // According to the LSB ("ELF special sections"), sections with debug
+ // info are prefixed by ".debug". The names are not specified, but they
+ // look like ".debug_line", ".debug_info", etc.
+ bool HasDebugSections() {
+ // Debug sections are likely to be near the end, so reverse the
+ // direction of iteration.
+ for (int k = GetNumSections() - 1; k >= 0; --k) {
+ const char *name = GetSectionName(section_headers_[k].sh_name);
+ if (strncmp(name, ".debug", strlen(".debug")) == 0) return true;
+ if (strncmp(name, ".zdebug", strlen(".zdebug")) == 0) return true;
+ }
+ return false;
+ }
+
+ bool IsDynamicSharedObject() const {
+ return header_.e_type == ET_DYN;
+ }
+
+ // Return the number of sections.
+ uint64_t GetNumSections() const {
+ if (HasManySections())
+ return first_section_header_.sh_size;
+ return header_.e_shnum;
+ }
+
+ private:
+ typedef vector<pair<uint64, const typename ElfArch::Sym *> > AddrToSymMap;
+
+ static bool AddrToSymSorter(const typename AddrToSymMap::value_type& lhs,
+ const typename AddrToSymMap::value_type& rhs) {
+ return lhs.first < rhs.first;
+ }
+
+ static bool AddrToSymEquals(const typename AddrToSymMap::value_type& lhs,
+ const typename AddrToSymMap::value_type& rhs) {
+ return lhs.first == rhs.first;
+ }
+
+ // Does this ELF file have too many sections to fit in the program header?
+ bool HasManySections() const {
+ return header_.e_shnum == SHN_UNDEF;
+ }
+
+ // Return the number of program headers.
+ int GetNumProgramHeaders() const {
+ if (HasManySections() && header_.e_phnum == 0xffff &&
+ first_section_header_.sh_info != 0)
+ return first_section_header_.sh_info;
+ return header_.e_phnum;
+ }
+
+ // Return the index of the string table.
+ int GetStringTableIndex() const {
+ if (HasManySections()) {
+ if (header_.e_shstrndx == 0xffff)
+ return first_section_header_.sh_link;
+ else if (header_.e_shstrndx >= GetNumSections())
+ return 0;
+ }
+ return header_.e_shstrndx;
+ }
+
+ // Given an offset into the section header string table, return the
+ // section name.
+ const char *GetSectionName(typename ElfArch::Word sh_name) {
+ const ElfSectionReader<ElfArch> *shstrtab =
+ GetSection(GetStringTableIndex());
+ if (shstrtab != NULL) {
+ return shstrtab->GetOffset(sh_name);
+ }
+ return NULL;
+ }
+
+ // Return an ElfSectionReader for the given section. The reader will
+ // be freed when this object is destroyed.
+ const ElfSectionReader<ElfArch> *GetSection(int num) {
+ const char *name;
+ // Hard-coding the name for the section-name string table prevents
+ // infinite recursion.
+ if (num == GetStringTableIndex())
+ name = ".shstrtab";
+ else
+ name = GetSectionNameByIndex(num);
+ ElfSectionReader<ElfArch> *& reader = sections_[num];
+ if (reader == NULL)
+ reader = new ElfSectionReader<ElfArch>(name, path_, fd_,
+ section_headers_[num]);
+ return reader;
+ }
+
+ // Parse out the overall header information from the file and assert
+ // that it looks sane. This contains information like the magic
+ // number and target architecture.
+ bool ParseHeaders(int fd, const string &path) {
+ // Read in the global ELF header.
+ if (pread(fd, &header_, sizeof(header_), 0) != sizeof(header_)) {
+ return false;
+ }
+
+ // Must be an executable, dynamic shared object or relocatable object
+ if (header_.e_type != ET_EXEC &&
+ header_.e_type != ET_DYN &&
+ header_.e_type != ET_REL) {
+ return false;
+ }
+ // Need a section header.
+ if (header_.e_shoff == 0) {
+ return false;
+ }
+
+ if (header_.e_shnum == SHN_UNDEF) {
+ // The number of sections in the program header is only a 16-bit value. In
+ // the event of overflow (greater than SHN_LORESERVE sections), e_shnum
+ // will read SHN_UNDEF and the true number of section header table entries
+ // is found in the sh_size field of the first section header.
+ // See: http://www.sco.com/developers/gabi/2003-12-17/ch4.sheader.html
+ if (pread(fd, &first_section_header_, sizeof(first_section_header_),
+ header_.e_shoff) != sizeof(first_section_header_)) {
+ return false;
+ }
+ }
+
+ // Dynamically allocate enough space to store the section headers
+ // and read them out of the file.
+ const int section_headers_size =
+ GetNumSections() * sizeof(*section_headers_);
+ section_headers_ = new typename ElfArch::Shdr[section_headers_size];
+ if (pread(fd, section_headers_, section_headers_size, header_.e_shoff) !=
+ section_headers_size) {
+ return false;
+ }
+
+ // Dynamically allocate enough space to store the program headers
+ // and read them out of the file.
+ //const int program_headers_size =
+ // GetNumProgramHeaders() * sizeof(*program_headers_);
+ program_headers_ = new typename ElfArch::Phdr[GetNumProgramHeaders()];
+
+ // Presize the sections array for efficiency.
+ sections_.resize(GetNumSections(), NULL);
+ return true;
+ }
+
+ // Given the "value" of a function descriptor return the address of the
+ // function (i.e. the dereferenced value). Otherwise return "value".
+ uint64 AdjustPPC64FunctionDescriptorSymbolValue(uint64 value) {
+ if (opd_section_ != NULL &&
+ opd_info_.addr <= value &&
+ value < opd_info_.addr + opd_info_.size) {
+ uint64 offset = value - opd_info_.addr;
+ return (*reinterpret_cast<const uint64*>(opd_section_ + offset));
+ }
+ return value;
+ }
+
+ void AdjustSymbolValue(typename ElfArch::Sym* sym) {
+ switch (header_.e_machine) {
+ case EM_ARM:
+ // For ARM architecture, if the LSB of the function symbol offset is set,
+ // it indicates a Thumb function. This bit should not be taken literally.
+ // Clear it.
+ if (ElfArch::Type(sym) == STT_FUNC)
+ sym->st_value = AdjustARMThumbSymbolValue(sym->st_value);
+ break;
+ case EM_386:
+ // No adjustment needed for Intel x86 architecture. However, explicitly
+ // define this case as we use it quite often.
+ break;
+ case EM_PPC64:
+ // PowerPC64 currently has function descriptors as part of the ABI.
+ // Function symbols need to be adjusted accordingly.
+ if (ElfArch::Type(sym) == STT_FUNC)
+ sym->st_value = AdjustPPC64FunctionDescriptorSymbolValue(sym->st_value);
+ break;
+ default:
+ break;
+ }
+ }
+
+ friend class SymbolIterator<ElfArch>;
+
+ // The file we're reading.
+ const string path_;
+ // Open file descriptor for path_. Not owned by this object.
+ const int fd_;
+
+ // The global header of the ELF file.
+ typename ElfArch::Ehdr header_;
+
+ // The header of the first section. This may be used to supplement the ELF
+ // file header.
+ typename ElfArch::Shdr first_section_header_;
+
+ // Array of GetNumSections() section headers, allocated when we read
+ // in the global header.
+ typename ElfArch::Shdr *section_headers_;
+
+ // Array of GetNumProgramHeaders() program headers, allocated when we read
+ // in the global header.
+ typename ElfArch::Phdr *program_headers_;
+
+ // An array of pointers to ElfSectionReaders. Sections are
+ // mmaped as they're needed and not released until this object is
+ // destroyed.
+ vector<ElfSectionReader<ElfArch>*> sections_;
+
+ // For PowerPC64 we need to keep track of function descriptors when looking up
+ // values for funtion symbols values. Function descriptors are kept in the
+ // .opd section and are dereferenced to find the function address.
+ ElfReader::SectionInfo opd_info_;
+ const char *opd_section_; // Must be checked for NULL before use.
+ int64 base_for_text_;
+
+ // Read PLT-related sections for the current architecture.
+ bool plts_supported_;
+ // Code size of each PLT function for the current architecture.
+ size_t plt_code_size_;
+ // Size of the special first entry in the .plt section that calls the runtime
+ // loader resolution routine, and that all other entries jump to when doing
+ // lazy symbol binding.
+ size_t plt0_size_;
+
+ // Maps a dynamic symbol index to a PLT offset.
+ // The vector entry index is the dynamic symbol index.
+ std::vector<uint64> symbols_plt_offsets_;
+
+ // Container for PLT function name strings. These strings are passed by
+ // reference to SymbolSink::AddSymbol() so they need to be stored somewhere.
+ std::vector<string> plt_function_names_;
+
+ bool visited_relocation_entries_;
+
+ // True if this is a .dwp file.
+ bool is_dwp_;
+};
+
+ElfReader::ElfReader(const string &path)
+ : path_(path), fd_(-1), impl32_(NULL), impl64_(NULL) {
+ // linux 2.6.XX kernel can show deleted files like this:
+ // /var/run/nscd/dbYLJYaE (deleted)
+ // and the kernel-supplied vdso and vsyscall mappings like this:
+ // [vdso]
+ // [vsyscall]
+ if (MyHasSuffixString(path, " (deleted)"))
+ return;
+ if (path == "[vdso]")
+ return;
+ if (path == "[vsyscall]")
+ return;
+
+ fd_ = open(path.c_str(), O_RDONLY);
+}
+
+ElfReader::~ElfReader() {
+ if (fd_ != -1)
+ close(fd_);
+ if (impl32_ != NULL)
+ delete impl32_;
+ if (impl64_ != NULL)
+ delete impl64_;
+}
+
+
+// The only word-size specific part of this file is IsNativeElfFile().
+#if __WORDSIZE == 32
+#define NATIVE_ELF_ARCH Elf32
+#elif __WORDSIZE == 64
+#define NATIVE_ELF_ARCH Elf64
+#else
+#error "Invalid word size"
+#endif
+
+template <typename ElfArch>
+static bool IsElfFile(const int fd, const string &path) {
+ if (fd < 0)
+ return false;
+ if (!ElfReaderImpl<ElfArch>::IsArchElfFile(fd, NULL)) {
+ // No error message here. IsElfFile gets called many times.
+ return false;
+ }
+ return true;
+}
+
+bool ElfReader::IsNativeElfFile() const {
+ return IsElfFile<NATIVE_ELF_ARCH>(fd_, path_);
+}
+
+bool ElfReader::IsElf32File() const {
+ return IsElfFile<Elf32>(fd_, path_);
+}
+
+bool ElfReader::IsElf64File() const {
+ return IsElfFile<Elf64>(fd_, path_);
+}
+
+/*
+void ElfReader::AddSymbols(SymbolMap *symbols,
+ uint64 mem_offset, uint64 file_offset,
+ uint64 length) {
+ if (fd_ < 0)
+ return;
+ // TODO(chatham): Actually use the information about file offset and
+ // the length of the mapped section. On some machines the data
+ // section gets mapped as executable, and we'll end up reading the
+ // file twice and getting some of the offsets wrong.
+ if (IsElf32File()) {
+ GetImpl32()->GetSymbolPositions(symbols, SHT_SYMTAB,
+ mem_offset, file_offset);
+ GetImpl32()->GetSymbolPositions(symbols, SHT_DYNSYM,
+ mem_offset, file_offset);
+ } else if (IsElf64File()) {
+ GetImpl64()->GetSymbolPositions(symbols, SHT_SYMTAB,
+ mem_offset, file_offset);
+ GetImpl64()->GetSymbolPositions(symbols, SHT_DYNSYM,
+ mem_offset, file_offset);
+ }
+}
+*/
+
+void ElfReader::VisitSymbols(ElfReader::SymbolSink *sink) {
+ VisitSymbols(sink, -1, -1);
+}
+
+void ElfReader::VisitSymbols(ElfReader::SymbolSink *sink,
+ int symbol_binding,
+ int symbol_type) {
+ VisitSymbols(sink, symbol_binding, symbol_type, false);
+}
+
+void ElfReader::VisitSymbols(ElfReader::SymbolSink *sink,
+ int symbol_binding,
+ int symbol_type,
+ bool get_raw_symbol_values) {
+ if (IsElf32File()) {
+ GetImpl32()->VisitRelocationEntries();
+ GetImpl32()->VisitSymbols(SHT_SYMTAB, sink, symbol_binding, symbol_type,
+ get_raw_symbol_values);
+ GetImpl32()->VisitSymbols(SHT_DYNSYM, sink, symbol_binding, symbol_type,
+ get_raw_symbol_values);
+ } else if (IsElf64File()) {
+ GetImpl64()->VisitRelocationEntries();
+ GetImpl64()->VisitSymbols(SHT_SYMTAB, sink, symbol_binding, symbol_type,
+ get_raw_symbol_values);
+ GetImpl64()->VisitSymbols(SHT_DYNSYM, sink, symbol_binding, symbol_type,
+ get_raw_symbol_values);
+ }
+}
+
+uint64 ElfReader::VaddrOfFirstLoadSegment() {
+ if (IsElf32File()) {
+ return GetImpl32()->VaddrOfFirstLoadSegment();
+ } else if (IsElf64File()) {
+ return GetImpl64()->VaddrOfFirstLoadSegment();
+ } else {
+ return 0;
+ }
+}
+
+const char *ElfReader::GetSectionName(int shndx) {
+ if (shndx < 0 || static_cast<unsigned int>(shndx) >= GetNumSections()) return NULL;
+ if (IsElf32File()) {
+ return GetImpl32()->GetSectionNameByIndex(shndx);
+ } else if (IsElf64File()) {
+ return GetImpl64()->GetSectionNameByIndex(shndx);
+ } else {
+ return NULL;
+ }
+}
+
+uint64 ElfReader::GetNumSections() {
+ if (IsElf32File()) {
+ return GetImpl32()->GetNumSections();
+ } else if (IsElf64File()) {
+ return GetImpl64()->GetNumSections();
+ } else {
+ return 0;
+ }
+}
+
+const char *ElfReader::GetSectionByIndex(int shndx, size_t *size) {
+ if (IsElf32File()) {
+ return GetImpl32()->GetSectionContentsByIndex(shndx, size);
+ } else if (IsElf64File()) {
+ return GetImpl64()->GetSectionContentsByIndex(shndx, size);
+ } else {
+ return NULL;
+ }
+}
+
+const char *ElfReader::GetSectionByName(const string &section_name,
+ size_t *size) {
+ if (IsElf32File()) {
+ return GetImpl32()->GetSectionContentsByName(section_name, size);
+ } else if (IsElf64File()) {
+ return GetImpl64()->GetSectionContentsByName(section_name, size);
+ } else {
+ return NULL;
+ }
+}
+
+const char *ElfReader::GetSectionInfoByName(const string &section_name,
+ SectionInfo *info) {
+ if (IsElf32File()) {
+ return GetImpl32()->GetSectionInfoByName(section_name, info);
+ } else if (IsElf64File()) {
+ return GetImpl64()->GetSectionInfoByName(section_name, info);
+ } else {
+ return NULL;
+ }
+}
+
+bool ElfReader::SectionNamesMatch(const string &name, const string &sh_name) {
+ if ((name.find(".debug_", 0) == 0) && (sh_name.find(".zdebug_", 0) == 0)) {
+ const string name_suffix(name, strlen(".debug_"));
+ const string sh_name_suffix(sh_name, strlen(".zdebug_"));
+ return name_suffix == sh_name_suffix;
+ }
+ return name == sh_name;
+}
+
+bool ElfReader::IsDynamicSharedObject() {
+ if (IsElf32File()) {
+ return GetImpl32()->IsDynamicSharedObject();
+ } else if (IsElf64File()) {
+ return GetImpl64()->IsDynamicSharedObject();
+ } else {
+ return false;
+ }
+}
+
+ElfReaderImpl<Elf32> *ElfReader::GetImpl32() {
+ if (impl32_ == NULL) {
+ impl32_ = new ElfReaderImpl<Elf32>(path_, fd_);
+ }
+ return impl32_;
+}
+
+ElfReaderImpl<Elf64> *ElfReader::GetImpl64() {
+ if (impl64_ == NULL) {
+ impl64_ = new ElfReaderImpl<Elf64>(path_, fd_);
+ }
+ return impl64_;
+}
+
+// Return true if file is an ELF binary of ElfArch, with unstripped
+// debug info (debug_only=true) or symbol table (debug_only=false).
+// Otherwise, return false.
+template <typename ElfArch>
+static bool IsNonStrippedELFBinaryImpl(const string &path, const int fd,
+ bool debug_only) {
+ if (!ElfReaderImpl<ElfArch>::IsArchElfFile(fd, NULL)) return false;
+ ElfReaderImpl<ElfArch> elf_reader(path, fd);
+ return debug_only ?
+ elf_reader.HasDebugSections()
+ : (elf_reader.GetSectionByType(SHT_SYMTAB) != NULL);
+}
+
+// Helper for the IsNon[Debug]StrippedELFBinary functions.
+static bool IsNonStrippedELFBinaryHelper(const string &path,
+ bool debug_only) {
+ const int fd = open(path.c_str(), O_RDONLY);
+ if (fd == -1) {
+ return false;
+ }
+
+ if (IsNonStrippedELFBinaryImpl<Elf32>(path, fd, debug_only) ||
+ IsNonStrippedELFBinaryImpl<Elf64>(path, fd, debug_only)) {
+ close(fd);
+ return true;
+ }
+ close(fd);
+ return false;
+}
+
+bool ElfReader::IsNonStrippedELFBinary(const string &path) {
+ return IsNonStrippedELFBinaryHelper(path, false);
+}
+
+bool ElfReader::IsNonDebugStrippedELFBinary(const string &path) {
+ return IsNonStrippedELFBinaryHelper(path, true);
+}
+} // namespace dwarf2reader
diff --git a/3rdParty/Breakpad/src/common/dwarf/elf_reader.h b/3rdParty/Breakpad/src/common/dwarf/elf_reader.h
new file mode 100644
index 0000000..b1bb67a
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/elf_reader.h
@@ -0,0 +1,166 @@
+// Copyright 2005 Google Inc. All Rights Reserved.
+// Author: chatham@google.com (Andrew Chatham)
+// Author: satorux@google.com (Satoru Takabayashi)
+//
+// ElfReader handles reading in ELF. It can extract symbols from the
+// current process, which may be used to symbolize stack traces
+// without having to make a potentially dangerous call to fork().
+//
+// ElfReader dynamically allocates memory, so it is not appropriate to
+// use once the address space might be corrupted, such as during
+// process death.
+//
+// ElfReader supports both 32-bit and 64-bit ELF binaries.
+
+#ifndef COMMON_DWARF_ELF_READER_H__
+#define COMMON_DWARF_ELF_READER_H__
+
+#include <string>
+#include <vector>
+
+#include "common/dwarf/types.h"
+#include "common/using_std_string.h"
+
+using std::vector;
+using std::pair;
+
+namespace dwarf2reader {
+
+class SymbolMap;
+class Elf32;
+class Elf64;
+template<typename ElfArch>
+class ElfReaderImpl;
+
+class ElfReader {
+ public:
+ explicit ElfReader(const string &path);
+ ~ElfReader();
+
+ // Parse the ELF prologue of this file and return whether it was
+ // successfully parsed and matches the word size and byte order of
+ // the current process.
+ bool IsNativeElfFile() const;
+
+ // Similar to IsNativeElfFile but checks if it's a 32-bit ELF file.
+ bool IsElf32File() const;
+
+ // Similar to IsNativeElfFile but checks if it's a 64-bit ELF file.
+ bool IsElf64File() const;
+
+ // Checks if it's an ELF file of type ET_DYN (shared object file).
+ bool IsDynamicSharedObject();
+
+ // Add symbols in the given ELF file into the provided SymbolMap,
+ // assuming that the file has been loaded into the specified
+ // offset.
+ //
+ // The remaining arguments are typically taken from a
+ // ProcMapsIterator (base/sysinfo.h) and describe which portions of
+ // the ELF file are mapped into which parts of memory:
+ //
+ // mem_offset - position at which the segment is mapped into memory
+ // file_offset - offset in the file where the mapping begins
+ // length - length of the mapped segment
+ void AddSymbols(SymbolMap *symbols,
+ uint64 mem_offset, uint64 file_offset,
+ uint64 length);
+
+ class SymbolSink {
+ public:
+ virtual ~SymbolSink() {}
+ virtual void AddSymbol(const char *name, uint64 address, uint64 size) = 0;
+ };
+
+ // Like AddSymbols above, but with no address correction.
+ // Processes any SHT_SYMTAB section, followed by any SHT_DYNSYM section.
+ void VisitSymbols(SymbolSink *sink);
+
+ // Like VisitSymbols above, but for a specific symbol binding/type.
+ // A negative value for the binding and type parameters means any
+ // binding or type.
+ void VisitSymbols(SymbolSink *sink, int symbol_binding, int symbol_type);
+
+ // Like VisitSymbols above but can optionally export raw symbol values instead
+ // of adjusted ones.
+ void VisitSymbols(SymbolSink *sink, int symbol_binding, int symbol_type,
+ bool get_raw_symbol_values);
+
+ // p_vaddr of the first PT_LOAD segment (if any), or 0 if no PT_LOAD
+ // segments are present. This is the address an ELF image was linked
+ // (by static linker) to be loaded at. Usually (but not always) 0 for
+ // shared libraries and position-independent executables.
+ uint64 VaddrOfFirstLoadSegment();
+
+ // Return the name of section "shndx". Returns NULL if the section
+ // is not found.
+ const char *GetSectionName(int shndx);
+
+ // Return the number of sections in the given ELF file.
+ uint64 GetNumSections();
+
+ // Get section "shndx" from the given ELF file. On success, return
+ // the pointer to the section and store the size in "size".
+ // On error, return NULL. The returned section data is only valid
+ // until the ElfReader gets destroyed.
+ const char *GetSectionByIndex(int shndx, size_t *size);
+
+ // Get section with "section_name" (ex. ".text", ".symtab") in the
+ // given ELF file. On success, return the pointer to the section
+ // and store the size in "size". On error, return NULL. The
+ // returned section data is only valid until the ElfReader gets
+ // destroyed.
+ const char *GetSectionByName(const string &section_name, size_t *size);
+
+ // This is like GetSectionByName() but it returns a lot of extra information
+ // about the section. The SectionInfo structure is almost identical to
+ // the typedef struct Elf64_Shdr defined in <elf.h>, but is redefined
+ // here so that the many short macro names in <elf.h> don't have to be
+ // added to our already cluttered namespace.
+ struct SectionInfo {
+ uint32 type; // Section type (SHT_xxx constant from elf.h).
+ uint64 flags; // Section flags (SHF_xxx constants from elf.h).
+ uint64 addr; // Section virtual address at execution.
+ uint64 offset; // Section file offset.
+ uint64 size; // Section size in bytes.
+ uint32 link; // Link to another section.
+ uint32 info; // Additional section information.
+ uint64 addralign; // Section alignment.
+ uint64 entsize; // Entry size if section holds a table.
+ };
+ const char *GetSectionInfoByName(const string &section_name,
+ SectionInfo *info);
+
+ // Check if "path" is an ELF binary that has not been stripped of symbol
+ // tables. This function supports both 32-bit and 64-bit ELF binaries.
+ static bool IsNonStrippedELFBinary(const string &path);
+
+ // Check if "path" is an ELF binary that has not been stripped of debug
+ // info. Unlike IsNonStrippedELFBinary, this function will return
+ // false for binaries passed through "strip -S".
+ static bool IsNonDebugStrippedELFBinary(const string &path);
+
+ // Match a requested section name with the section name as it
+ // appears in the elf-file, adjusting for compressed debug section
+ // names. For example, returns true if name == ".debug_abbrev" and
+ // sh_name == ".zdebug_abbrev"
+ static bool SectionNamesMatch(const string &name, const string &sh_name);
+
+ private:
+ // Lazily initialize impl32_ and return it.
+ ElfReaderImpl<Elf32> *GetImpl32();
+ // Ditto for impl64_.
+ ElfReaderImpl<Elf64> *GetImpl64();
+
+ // Path of the file we're reading.
+ const string path_;
+ // Read-only file descriptor for the file. May be -1 if there was an
+ // error during open.
+ int fd_;
+ ElfReaderImpl<Elf32> *impl32_;
+ ElfReaderImpl<Elf64> *impl64_;
+};
+
+} // namespace dwarf2reader
+
+#endif // COMMON_DWARF_ELF_READER_H__
diff --git a/3rdParty/Breakpad/src/common/dwarf/functioninfo.cc b/3rdParty/Breakpad/src/common/dwarf/functioninfo.cc
new file mode 100644
index 0000000..55a255e
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/functioninfo.cc
@@ -0,0 +1,231 @@
+// Copyright (c) 2010 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// This is a client for the dwarf2reader to extract function and line
+// information from the debug info.
+
+#include <assert.h>
+#include <limits.h>
+#include <stdio.h>
+
+#include <map>
+#include <queue>
+#include <vector>
+
+#include "common/dwarf/functioninfo.h"
+#include "common/dwarf/bytereader.h"
+#include "common/scoped_ptr.h"
+#include "common/using_std_string.h"
+
+using google_breakpad::scoped_ptr;
+
+namespace dwarf2reader {
+
+CULineInfoHandler::CULineInfoHandler(std::vector<SourceFileInfo>* files,
+ std::vector<string>* dirs,
+ LineMap* linemap):linemap_(linemap),
+ files_(files),
+ dirs_(dirs) {
+ // The dirs and files are 1 indexed, so just make sure we put
+ // nothing in the 0 vector.
+ assert(dirs->size() == 0);
+ assert(files->size() == 0);
+ dirs->push_back("");
+ SourceFileInfo s;
+ s.name = "";
+ s.lowpc = ULLONG_MAX;
+ files->push_back(s);
+}
+
+void CULineInfoHandler::DefineDir(const string& name, uint32 dir_num) {
+ // These should never come out of order, actually
+ assert(dir_num == dirs_->size());
+ dirs_->push_back(name);
+}
+
+void CULineInfoHandler::DefineFile(const string& name,
+ int32 file_num, uint32 dir_num,
+ uint64 mod_time, uint64 length) {
+ assert(dir_num >= 0);
+ assert(dir_num < dirs_->size());
+
+ // These should never come out of order, actually.
+ if (file_num == (int32)files_->size() || file_num == -1) {
+ string dir = dirs_->at(dir_num);
+
+ SourceFileInfo s;
+ s.lowpc = ULLONG_MAX;
+
+ if (dir == "") {
+ s.name = name;
+ } else {
+ s.name = dir + "/" + name;
+ }
+
+ files_->push_back(s);
+ } else {
+ fprintf(stderr, "error in DefineFile");
+ }
+}
+
+void CULineInfoHandler::AddLine(uint64 address, uint64 length, uint32 file_num,
+ uint32 line_num, uint32 column_num) {
+ if (file_num < files_->size()) {
+ linemap_->insert(
+ std::make_pair(address,
+ std::make_pair(files_->at(file_num).name.c_str(),
+ line_num)));
+
+ if (address < files_->at(file_num).lowpc) {
+ files_->at(file_num).lowpc = address;
+ }
+ } else {
+ fprintf(stderr, "error in AddLine");
+ }
+}
+
+bool CUFunctionInfoHandler::StartCompilationUnit(uint64 offset,
+ uint8 address_size,
+ uint8 offset_size,
+ uint64 cu_length,
+ uint8 dwarf_version) {
+ current_compilation_unit_offset_ = offset;
+ return true;
+}
+
+
+// For function info, we only care about subprograms and inlined
+// subroutines. For line info, the DW_AT_stmt_list lives in the
+// compile unit tag.
+
+bool CUFunctionInfoHandler::StartDIE(uint64 offset, enum DwarfTag tag) {
+ switch (tag) {
+ case DW_TAG_subprogram:
+ case DW_TAG_inlined_subroutine: {
+ current_function_info_ = new FunctionInfo;
+ current_function_info_->lowpc = current_function_info_->highpc = 0;
+ current_function_info_->name = "";
+ current_function_info_->line = 0;
+ current_function_info_->file = "";
+ offset_to_funcinfo_->insert(std::make_pair(offset,
+ current_function_info_));
+ };
+ // FALLTHROUGH
+ case DW_TAG_compile_unit:
+ return true;
+ default:
+ return false;
+ }
+ return false;
+}
+
+// Only care about the name attribute for functions
+
+void CUFunctionInfoHandler::ProcessAttributeString(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const string &data) {
+ if (current_function_info_) {
+ if (attr == DW_AT_name)
+ current_function_info_->name = data;
+ else if (attr == DW_AT_MIPS_linkage_name)
+ current_function_info_->mangled_name = data;
+ }
+}
+
+void CUFunctionInfoHandler::ProcessAttributeUnsigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data) {
+ if (attr == DW_AT_stmt_list) {
+ SectionMap::const_iterator iter = sections_.find("__debug_line");
+ assert(iter != sections_.end());
+
+ scoped_ptr<LineInfo> lireader(new LineInfo(iter->second.first + data,
+ iter->second.second - data,
+ reader_, linehandler_));
+ lireader->Start();
+ } else if (current_function_info_) {
+ switch (attr) {
+ case DW_AT_low_pc:
+ current_function_info_->lowpc = data;
+ break;
+ case DW_AT_high_pc:
+ current_function_info_->highpc = data;
+ break;
+ case DW_AT_decl_line:
+ current_function_info_->line = data;
+ break;
+ case DW_AT_decl_file:
+ current_function_info_->file = files_->at(data).name;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+void CUFunctionInfoHandler::ProcessAttributeReference(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data) {
+ if (current_function_info_) {
+ switch (attr) {
+ case DW_AT_specification: {
+ // Some functions have a "specification" attribute
+ // which means they were defined elsewhere. The name
+ // attribute is not repeated, and must be taken from
+ // the specification DIE. Here we'll assume that
+ // any DIE referenced in this manner will already have
+ // been seen, but that's not really required by the spec.
+ FunctionMap::iterator iter = offset_to_funcinfo_->find(data);
+ if (iter != offset_to_funcinfo_->end()) {
+ current_function_info_->name = iter->second->name;
+ current_function_info_->mangled_name = iter->second->mangled_name;
+ } else {
+ // If you hit this, this code probably needs to be rewritten.
+ fprintf(stderr,
+ "Error: DW_AT_specification was seen before the referenced "
+ "DIE! (Looking for DIE at offset %08llx, in DIE at "
+ "offset %08llx)\n", data, offset);
+ }
+ break;
+ }
+ default:
+ break;
+ }
+ }
+}
+
+void CUFunctionInfoHandler::EndDIE(uint64 offset) {
+ if (current_function_info_ && current_function_info_->lowpc)
+ address_to_funcinfo_->insert(std::make_pair(current_function_info_->lowpc,
+ current_function_info_));
+}
+
+} // namespace dwarf2reader
diff --git a/3rdParty/Breakpad/src/common/dwarf/functioninfo.h b/3rdParty/Breakpad/src/common/dwarf/functioninfo.h
new file mode 100644
index 0000000..0b08a5f
--- /dev/null
+++ b/3rdParty/Breakpad/src/common/dwarf/functioninfo.h
@@ -0,0 +1,188 @@
+// Copyright (c) 2010 Google Inc. All Rights Reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+// This file contains the definitions for a DWARF2/3 information
+// collector that uses the DWARF2/3 reader interface to build a mapping
+// of addresses to files, lines, and functions.
+
+#ifndef COMMON_DWARF_FUNCTIONINFO_H__
+#define COMMON_DWARF_FUNCTIONINFO_H__
+
+#include <map>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "common/dwarf/dwarf2reader.h"
+#include "common/using_std_string.h"
+
+
+namespace dwarf2reader {
+
+struct FunctionInfo {
+ // Name of the function
+ string name;
+ // Mangled name of the function
+ string mangled_name;
+ // File containing this function
+ string file;
+ // Line number for start of function.
+ uint32 line;
+ // Beginning address for this function
+ uint64 lowpc;
+ // End address for this function.
+ uint64 highpc;
+};
+
+struct SourceFileInfo {
+ // Name of the source file name
+ string name;
+ // Low address of source file name
+ uint64 lowpc;
+};
+
+typedef std::map<uint64, FunctionInfo*> FunctionMap;
+typedef std::map<uint64, std::pair<string, uint32> > LineMap;
+
+// This class is a basic line info handler that fills in the dirs,
+// file, and linemap passed into it with the data produced from the
+// LineInfoHandler.
+class CULineInfoHandler: public LineInfoHandler {
+ public:
+
+ //
+ CULineInfoHandler(std::vector<SourceFileInfo>* files,
+ std::vector<string>* dirs,
+ LineMap* linemap);
+ virtual ~CULineInfoHandler() { }
+
+ // Called when we define a directory. We just place NAME into dirs_
+ // at position DIR_NUM.
+ virtual void DefineDir(const string& name, uint32 dir_num);
+
+ // Called when we define a filename. We just place
+ // concat(dirs_[DIR_NUM], NAME) into files_ at position FILE_NUM.
+ virtual void DefineFile(const string& name, int32 file_num,
+ uint32 dir_num, uint64 mod_time, uint64 length);
+
+
+ // Called when the line info reader has a new line, address pair
+ // ready for us. ADDRESS is the address of the code, LENGTH is the
+ // length of its machine code in bytes, FILE_NUM is the file number
+ // containing the code, LINE_NUM is the line number in that file for
+ // the code, and COLUMN_NUM is the column number the code starts at,
+ // if we know it (0 otherwise).
+ virtual void AddLine(uint64 address, uint64 length,
+ uint32 file_num, uint32 line_num, uint32 column_num);
+
+ private:
+ LineMap* linemap_;
+ std::vector<SourceFileInfo>* files_;
+ std::vector<string>* dirs_;
+};
+
+class CUFunctionInfoHandler: public Dwarf2Handler {
+ public:
+ CUFunctionInfoHandler(std::vector<SourceFileInfo>* files,
+ std::vector<string>* dirs,
+ LineMap* linemap,
+ FunctionMap* offset_to_funcinfo,
+ FunctionMap* address_to_funcinfo,
+ CULineInfoHandler* linehandler,
+ const SectionMap& sections,
+ ByteReader* reader)
+ : files_(files), dirs_(dirs), linemap_(linemap),
+ offset_to_funcinfo_(offset_to_funcinfo),
+ address_to_funcinfo_(address_to_funcinfo),
+ linehandler_(linehandler), sections_(sections),
+ reader_(reader), current_function_info_(NULL) { }
+
+ virtual ~CUFunctionInfoHandler() { }
+
+ // Start to process a compilation unit at OFFSET from the beginning of the
+ // .debug_info section. We want to see all compilation units, so we
+ // always return true.
+
+ virtual bool StartCompilationUnit(uint64 offset, uint8 address_size,
+ uint8 offset_size, uint64 cu_length,
+ uint8 dwarf_version);
+
+ // Start to process a DIE at OFFSET from the beginning of the
+ // .debug_info section. We only care about function related DIE's.
+ virtual bool StartDIE(uint64 offset, enum DwarfTag tag);
+
+ // Called when we have an attribute with unsigned data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of the .debug_info section, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA.
+ virtual void ProcessAttributeUnsigned(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data);
+
+ // Called when we have an attribute with a DIE reference to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of the .debug_info section, has a name of ATTR, a form of
+ // FORM, and the offset of the referenced DIE from the start of the
+ // .debug_info section is in DATA.
+ virtual void ProcessAttributeReference(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ uint64 data);
+
+ // Called when we have an attribute with string data to give to
+ // our handler. The attribute is for the DIE at OFFSET from the
+ // beginning of the .debug_info section, has a name of ATTR, a form of
+ // FORM, and the actual data of the attribute is in DATA.
+ virtual void ProcessAttributeString(uint64 offset,
+ enum DwarfAttribute attr,
+ enum DwarfForm form,
+ const string& data);
+
+ // Called when finished processing the DIE at OFFSET.
+ // Because DWARF2/3 specifies a tree of DIEs, you may get starts
+ // before ends of the previous DIE, as we process children before
+ // ending the parent.
+ virtual void EndDIE(uint64 offset);
+
+ private:
+ std::vector<SourceFileInfo>* files_;
+ std::vector<string>* dirs_;
+ LineMap* linemap_;
+ FunctionMap* offset_to_funcinfo_;
+ FunctionMap* address_to_funcinfo_;
+ CULineInfoHandler* linehandler_;
+ const SectionMap& sections_;
+ ByteReader* reader_;
+ FunctionInfo* current_function_info_;
+ uint64 current_compilation_unit_offset_;
+};
+
+} // namespace dwarf2reader
+#endif // COMMON_DWARF_FUNCTIONINFO_H__
diff --git a/3rdParty/Breakpad/src/common/dwarf/types.h b/3rdParty/Breakpad/src/common/dwarf/types.h
index 61ca457..59dda31 100644
--- a/3rdParty/Breakpad/src/common/dwarf/types.h
+++ b/3rdParty/Breakpad/src/common/dwarf/types.h
@@ -45,11 +45,7 @@ typedef unsigned short uint16;
typedef unsigned int uint32;
typedef unsigned long long uint64;
-#ifdef __PTRDIFF_TYPE__
-typedef __PTRDIFF_TYPE__ intptr;
-typedef unsigned __PTRDIFF_TYPE__ uintptr;
-#else
-#error "Can't find pointer-sized integral types."
-#endif
+typedef intptr_t intptr;
+typedef uintptr_t uintptr;
#endif // _COMMON_DWARF_TYPES_H__