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authorRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
committerRemko Tronçon <git@el-tramo.be>2012-08-17 21:07:13 (GMT)
commit4397df6b409ca84f63838fa635fc2abe8af80b71 (patch)
tree0806d51a1aaa6a1f9ac00df318be72fbee19ec1d /3rdParty/Breakpad/src/common/mac/macho_walker.h
parentead6c91f24d77de3319e77ae1354387407065ef1 (diff)
downloadswift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.zip
swift-contrib-4397df6b409ca84f63838fa635fc2abe8af80b71.tar.bz2
Added Breakpad support for Windows.
Diffstat (limited to '3rdParty/Breakpad/src/common/mac/macho_walker.h')
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diff --git a/3rdParty/Breakpad/src/common/mac/macho_walker.h b/3rdParty/Breakpad/src/common/mac/macho_walker.h
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+// Copyright (c) 2006, 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.
+
+// macho_walker.h: Iterate over the load commands in a mach-o file
+//
+// Author: Dan Waylonis
+
+#ifndef COMMON_MAC_MACHO_WALKER_H__
+#define COMMON_MAC_MACHO_WALKER_H__
+
+#include <mach-o/loader.h>
+#include <sys/types.h>
+
+namespace MacFileUtilities {
+
+class MachoWalker {
+ public:
+ // A callback function executed when a new load command is read. If no
+ // further processing of load commands is desired, return false. Otherwise,
+ // return true.
+ // |cmd| is the current command, and |offset| is the location relative to the
+ // beginning of the file (not header) where the command was read. If |swap|
+ // is set, then any command data (other than the returned load_command) should
+ // be swapped when read
+ typedef bool (*LoadCommandCallback)(MachoWalker *walker, load_command *cmd,
+ off_t offset, bool swap, void *context);
+
+ MachoWalker(const char *path, LoadCommandCallback callback, void *context);
+ MachoWalker(void *memory, size_t size, LoadCommandCallback callback,
+ void *context);
+ ~MachoWalker();
+
+ // Begin walking the header for |cpu_type|. If |cpu_type| is 0, then the
+ // native cpu type is used. Otherwise, accepted values are listed in
+ // /usr/include/mach/machine.h (e.g., CPU_TYPE_X86 or CPU_TYPE_POWERPC).
+ // Returns false if opening the file failed or if the |cpu_type| is not
+ // present in the file.
+ bool WalkHeader(int cpu_type);
+
+ // Locate (if any) the header offset for |cpu_type| and return in |offset|.
+ // Return true if found, false otherwise.
+ bool FindHeader(int cpu_type, off_t &offset);
+
+ // Read |size| bytes from the opened file at |offset| into |buffer|
+ bool ReadBytes(void *buffer, size_t size, off_t offset);
+
+ // Return the current header and header offset
+ bool CurrentHeader(struct mach_header_64 *header, off_t *offset);
+
+ private:
+ // Validate the |cpu_type|
+ int ValidateCPUType(int cpu_type);
+
+ // Process an individual header starting at |offset| from the start of the
+ // file. Return true if successful, false otherwise.
+ bool WalkHeaderAtOffset(off_t offset);
+ bool WalkHeader64AtOffset(off_t offset);
+
+ // Bottleneck for walking the load commands
+ bool WalkHeaderCore(off_t offset, uint32_t number_of_commands, bool swap);
+
+ // File descriptor to the opened file
+ int file_;
+
+ // Memory location to read from.
+ void *memory_;
+
+ // Size of the memory segment we can read from.
+ size_t memory_size_;
+
+ // User specified callback & context
+ LoadCommandCallback callback_;
+ void *callback_context_;
+
+ // Current header, size, and offset. The mach_header_64 is used for both
+ // 32-bit and 64-bit headers because they only differ in their last field
+ // (reserved). By adding the |current_header_size_| and the
+ // |current_header_offset_|, you can determine the offset in the file just
+ // after the header.
+ struct mach_header_64 *current_header_;
+ unsigned long current_header_size_;
+ off_t current_header_offset_;
+
+ private:
+ MachoWalker(const MachoWalker &);
+ MachoWalker &operator=(const MachoWalker &);
+};
+
+} // namespace MacFileUtilities
+
+#endif // COMMON_MAC_MACHO_WALKER_H__