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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 ppc. 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
* Change to split into its own file: Neal Sidhwaney */
/*
* Breakpad minidump extension for PowerPC support. Based on Darwin/Mac OS X'
* mach/ppc/_types.h
*/
#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__
#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__
#define MD_FLOATINGSAVEAREA_PPC_FPR_COUNT 32
typedef struct {
/* fpregs is a double[32] in mach/ppc/_types.h, but a u_int64_t is used
* here for precise sizing. */
u_int64_t fpregs[MD_FLOATINGSAVEAREA_PPC_FPR_COUNT];
u_int32_t fpscr_pad;
u_int32_t fpscr; /* Status/control */
} MDFloatingSaveAreaPPC; /* Based on ppc_float_state */
#define MD_VECTORSAVEAREA_PPC_VR_COUNT 32
typedef struct {
/* Vector registers (including vscr) are 128 bits, but mach/ppc/_types.h
* exposes them as four 32-bit quantities. */
u_int128_t save_vr[MD_VECTORSAVEAREA_PPC_VR_COUNT];
u_int128_t save_vscr; /* Status/control */
u_int32_t save_pad5[4];
u_int32_t save_vrvalid; /* Identifies which vector registers are saved */
u_int32_t save_pad6[7];
} MDVectorSaveAreaPPC; /* ppc_vector_state */
#define MD_CONTEXT_PPC_GPR_COUNT 32
/* Use the same 32-bit alignment when accessing this structure from 64-bit code
* as is used natively in 32-bit code. #pragma pack is a MSVC extension
* supported by gcc. */
#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
#pragma pack(4)
#else
#pragma pack(push, 4)
#endif
typedef struct {
/* context_flags is not present in ppc_thread_state, but it aids
* identification of MDRawContextPPC among other raw context types,
* and it guarantees alignment when we get to float_save. */
u_int32_t context_flags;
u_int32_t srr0; /* Machine status save/restore: stores pc
* (instruction) */
u_int32_t srr1; /* Machine status save/restore: stores msr
* (ps, program/machine state) */
/* ppc_thread_state contains 32 fields, r0 .. r31. Here, an array is
* used for brevity. */
u_int32_t gpr[MD_CONTEXT_PPC_GPR_COUNT];
u_int32_t cr; /* Condition */
u_int32_t xer; /* Integer (fiXed-point) exception */
u_int32_t lr; /* Link */
u_int32_t ctr; /* Count */
u_int32_t mq; /* Multiply/Quotient (PPC 601, POWER only) */
u_int32_t vrsave; /* Vector save */
/* float_save and vector_save aren't present in ppc_thread_state, but
* are represented in separate structures that still define a thread's
* context. */
MDFloatingSaveAreaPPC float_save;
MDVectorSaveAreaPPC vector_save;
} MDRawContextPPC; /* Based on ppc_thread_state */
#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
#pragma pack(0)
#else
#pragma pack(pop)
#endif
/* For (MDRawContextPPC).context_flags. These values indicate the type of
* context stored in the structure. MD_CONTEXT_PPC is Breakpad-defined. Its
* value was chosen to avoid likely conflicts with MD_CONTEXT_* for other
* CPUs. */
#define MD_CONTEXT_PPC 0x20000000
#define MD_CONTEXT_PPC_BASE (MD_CONTEXT_PPC | 0x00000001)
#define MD_CONTEXT_PPC_FLOATING_POINT (MD_CONTEXT_PPC | 0x00000008)
#define MD_CONTEXT_PPC_VECTOR (MD_CONTEXT_PPC | 0x00000020)
#define MD_CONTEXT_PPC_FULL MD_CONTEXT_PPC_BASE
#define MD_CONTEXT_PPC_ALL (MD_CONTEXT_PPC_FULL | \
MD_CONTEXT_PPC_FLOATING_POINT | \
MD_CONTEXT_PPC_VECTOR)
#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__ */
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