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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. */
/* 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 x86. 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
* ensuring that all members are aligned on their natural boundaries. In
* 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.
*
* These definitions may be extended to support handling minidump files
* for other CPUs and other operating systems.
*
* Because precise data type sizes are crucial for this implementation to
* function properly and portably in terms of interoperability with minidumps
* produced by DbgHelp on Windows, a set of primitive types with known sizes
* are used as the basis of each structure defined by this file. DbgHelp
* on Windows is assumed to be the reference implementation; this file
* seeks to provide a cross-platform compatible implementation. To avoid
* collisions with the types and values defined and used by DbgHelp in the
* event that this implementation is used on Windows, each type and value
* defined here is given a new name, beginning with "MD". Names of the
* equivalent types and values in the Windows Platform SDK are given in
* comments.
*
* Author: Mark Mentovai */
#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_X86_H__
#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_X86_H__
#define MD_FLOATINGSAVEAREA_X86_REGISTERAREA_SIZE 80
/* SIZE_OF_80387_REGISTERS */
typedef struct {
uint32_t control_word;
uint32_t status_word;
uint32_t tag_word;
uint32_t error_offset;
uint32_t error_selector;
uint32_t data_offset;
uint32_t data_selector;
/* register_area contains eight 80-bit (x87 "long double") quantities for
* floating-point registers %st0 (%mm0) through %st7 (%mm7). */
uint8_t register_area[MD_FLOATINGSAVEAREA_X86_REGISTERAREA_SIZE];
uint32_t cr0_npx_state;
} MDFloatingSaveAreaX86; /* FLOATING_SAVE_AREA */
#define MD_CONTEXT_X86_EXTENDED_REGISTERS_SIZE 512
/* MAXIMUM_SUPPORTED_EXTENSION */
typedef struct {
/* The next field determines the layout of the structure, and which parts
* of it are populated */
uint32_t context_flags;
/* The next 6 registers are included with MD_CONTEXT_X86_DEBUG_REGISTERS */
uint32_t dr0;
uint32_t dr1;
uint32_t dr2;
uint32_t dr3;
uint32_t dr6;
uint32_t dr7;
/* The next field is included with MD_CONTEXT_X86_FLOATING_POINT */
MDFloatingSaveAreaX86 float_save;
/* The next 4 registers are included with MD_CONTEXT_X86_SEGMENTS */
uint32_t gs;
uint32_t fs;
uint32_t es;
uint32_t ds;
/* The next 6 registers are included with MD_CONTEXT_X86_INTEGER */
uint32_t edi;
uint32_t esi;
uint32_t ebx;
uint32_t edx;
uint32_t ecx;
uint32_t eax;
/* The next 6 registers are included with MD_CONTEXT_X86_CONTROL */
uint32_t ebp;
uint32_t eip;
uint32_t cs; /* WinNT.h says "must be sanitized" */
uint32_t eflags; /* WinNT.h says "must be sanitized" */
uint32_t esp;
uint32_t ss;
/* The next field is included with MD_CONTEXT_X86_EXTENDED_REGISTERS.
* It contains vector (MMX/SSE) registers. It it laid out in the
* format used by the fxsave and fsrstor instructions, so it includes
* a copy of the x87 floating-point registers as well. See FXSAVE in
* "Intel Architecture Software Developer's Manual, Volume 2." */
uint8_t extended_registers[
MD_CONTEXT_X86_EXTENDED_REGISTERS_SIZE];
} MDRawContextX86; /* CONTEXT */
/* For (MDRawContextX86).context_flags. These values indicate the type of
* context stored in the structure. The high 24 bits identify the CPU, the
* low 8 bits identify the type of context saved. */
#define MD_CONTEXT_X86 0x00010000
/* CONTEXT_i386, CONTEXT_i486: identifies CPU */
#define MD_CONTEXT_X86_CONTROL (MD_CONTEXT_X86 | 0x00000001)
/* CONTEXT_CONTROL */
#define MD_CONTEXT_X86_INTEGER (MD_CONTEXT_X86 | 0x00000002)
/* CONTEXT_INTEGER */
#define MD_CONTEXT_X86_SEGMENTS (MD_CONTEXT_X86 | 0x00000004)
/* CONTEXT_SEGMENTS */
#define MD_CONTEXT_X86_FLOATING_POINT (MD_CONTEXT_X86 | 0x00000008)
/* CONTEXT_FLOATING_POINT */
#define MD_CONTEXT_X86_DEBUG_REGISTERS (MD_CONTEXT_X86 | 0x00000010)
/* CONTEXT_DEBUG_REGISTERS */
#define MD_CONTEXT_X86_EXTENDED_REGISTERS (MD_CONTEXT_X86 | 0x00000020)
/* CONTEXT_EXTENDED_REGISTERS */
#define MD_CONTEXT_X86_XSTATE (MD_CONTEXT_X86 | 0x00000040)
/* CONTEXT_XSTATE */
#define MD_CONTEXT_X86_FULL (MD_CONTEXT_X86_CONTROL | \
MD_CONTEXT_X86_INTEGER | \
MD_CONTEXT_X86_SEGMENTS)
/* CONTEXT_FULL */
#define MD_CONTEXT_X86_ALL (MD_CONTEXT_X86_FULL | \
MD_CONTEXT_X86_FLOATING_POINT | \
MD_CONTEXT_X86_DEBUG_REGISTERS | \
MD_CONTEXT_X86_EXTENDED_REGISTERS)
/* CONTEXT_ALL */
#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_X86_H__ */
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