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+/* Copyright (c) 2009, 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. */
+
+/* minidump_format.h: A cross-platform reimplementation of minidump-related
+ * portions of DbgHelp.h from the Windows Platform SDK.
+ *
+ * (This is C99 source, please don't corrupt it with C++.)
+ *
+ * This file contains the necessary definitions to read minidump files
+ * produced on ARM. These files may be read on any platform provided
+ * that the alignments of these structures on the processing system are
+ * identical to the alignments of these structures on the producing system.
+ * For this reason, precise-sized types are used. The structures defined
+ * by this file have been laid out to minimize alignment problems by
+ * ensuring that all members are aligned on their natural boundaries.
+ * In some cases, tail-padding may be significant when different ABIs specify
+ * different tail-padding behaviors. To avoid problems when reading or
+ * writing affected structures, MD_*_SIZE macros are provided where needed,
+ * containing the useful size of the structures without padding.
+ *
+ * Structures that are defined by Microsoft to contain a zero-length array
+ * are instead defined here to contain an array with one element, as
+ * zero-length arrays are forbidden by standard C and C++. In these cases,
+ * *_minsize constants are provided to be used in place of sizeof. For a
+ * cleaner interface to these sizes when using C++, see minidump_size.h.
+ *
+ * These structures are also sufficient to populate minidump files.
+ *
+ * Because precise data type sizes are crucial for this implementation to
+ * function properly and portably, a set of primitive types with known sizes
+ * are used as the basis of each structure defined by this file.
+ *
+ * Author: Julian Seward
+ */
+
+/*
+ * ARM support
+ */
+
+#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__
+#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__
+
+#define MD_FLOATINGSAVEAREA_ARM_FPR_COUNT 32
+#define MD_FLOATINGSAVEAREA_ARM_FPEXTRA_COUNT 8
+
+/*
+ * Note that these structures *do not* map directly to the CONTEXT
+ * structure defined in WinNT.h in the Windows Mobile SDK. That structure
+ * does not accomodate VFPv3, and I'm unsure if it was ever used in the
+ * wild anyway, as Windows CE only seems to produce "cedumps" which
+ * are not exactly minidumps.
+ */
+typedef struct {
+ u_int64_t fpscr; /* FPU status register */
+
+ /* 32 64-bit floating point registers, d0 .. d31. */
+ u_int64_t regs[MD_FLOATINGSAVEAREA_ARM_FPR_COUNT];
+
+ /* Miscellaneous control words */
+ u_int32_t extra[MD_FLOATINGSAVEAREA_ARM_FPEXTRA_COUNT];
+} MDFloatingSaveAreaARM;
+
+#define MD_CONTEXT_ARM_GPR_COUNT 16
+
+typedef struct {
+ /* The next field determines the layout of the structure, and which parts
+ * of it are populated
+ */
+ u_int32_t context_flags;
+
+ /* 16 32-bit integer registers, r0 .. r15
+ * Note the following fixed uses:
+ * r13 is the stack pointer
+ * r14 is the link register
+ * r15 is the program counter
+ */
+ u_int32_t iregs[MD_CONTEXT_ARM_GPR_COUNT];
+
+ /* CPSR (flags, basically): 32 bits:
+ bit 31 - N (negative)
+ bit 30 - Z (zero)
+ bit 29 - C (carry)
+ bit 28 - V (overflow)
+ bit 27 - Q (saturation flag, sticky)
+ All other fields -- ignore */
+ u_int32_t cpsr;
+
+ /* The next field is included with MD_CONTEXT_ARM_FLOATING_POINT */
+ MDFloatingSaveAreaARM float_save;
+
+} MDRawContextARM;
+
+/* Indices into iregs for registers with a dedicated or conventional
+ * purpose.
+ */
+enum MDARMRegisterNumbers {
+ MD_CONTEXT_ARM_REG_IOS_FP = 7,
+ MD_CONTEXT_ARM_REG_FP = 11,
+ MD_CONTEXT_ARM_REG_SP = 13,
+ MD_CONTEXT_ARM_REG_LR = 14,
+ MD_CONTEXT_ARM_REG_PC = 15
+};
+
+/* For (MDRawContextARM).context_flags. These values indicate the type of
+ * context stored in the structure. */
+/* CONTEXT_ARM from the Windows CE 5.0 SDK. This value isn't correct
+ * because this bit can be used for flags. Presumably this value was
+ * never actually used in minidumps, but only in "CEDumps" which
+ * are a whole parallel minidump file format for Windows CE.
+ * Therefore, Breakpad defines its own value for ARM CPUs.
+ */
+#define MD_CONTEXT_ARM_OLD 0x00000040
+/* This value was chosen to avoid likely conflicts with MD_CONTEXT_*
+ * for other CPUs. */
+#define MD_CONTEXT_ARM 0x40000000
+#define MD_CONTEXT_ARM_INTEGER (MD_CONTEXT_ARM | 0x00000002)
+#define MD_CONTEXT_ARM_FLOATING_POINT (MD_CONTEXT_ARM | 0x00000004)
+
+#define MD_CONTEXT_ARM_FULL (MD_CONTEXT_ARM_INTEGER | \
+ MD_CONTEXT_ARM_FLOATING_POINT)
+
+#define MD_CONTEXT_ARM_ALL (MD_CONTEXT_ARM_INTEGER | \
+ MD_CONTEXT_ARM_FLOATING_POINT)
+
+#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__ */