1 /* Copyright (c) 2006, Google Inc. 2 * All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ 29 30 /* minidump_format.h: A cross-platform reimplementation of minidump-related 31 * portions of DbgHelp.h from the Windows Platform SDK. 32 * 33 * (This is C99 source, please don't corrupt it with C++.) 34 * 35 * This file contains the necessary definitions to read minidump files 36 * produced on ppc. These files may be read on any platform provided 37 * that the alignments of these structures on the processing system are 38 * identical to the alignments of these structures on the producing system. 39 * For this reason, precise-sized types are used. The structures defined 40 * by this file have been laid out to minimize alignment problems by ensuring 41 * ensuring that all members are aligned on their natural boundaries. In 42 * In some cases, tail-padding may be significant when different ABIs specify 43 * different tail-padding behaviors. To avoid problems when reading or 44 * writing affected structures, MD_*_SIZE macros are provided where needed, 45 * containing the useful size of the structures without padding. 46 * 47 * Structures that are defined by Microsoft to contain a zero-length array 48 * are instead defined here to contain an array with one element, as 49 * zero-length arrays are forbidden by standard C and C++. In these cases, 50 * *_minsize constants are provided to be used in place of sizeof. For a 51 * cleaner interface to these sizes when using C++, see minidump_size.h. 52 * 53 * These structures are also sufficient to populate minidump files. 54 * 55 * These definitions may be extended to support handling minidump files 56 * for other CPUs and other operating systems. 57 * 58 * Because precise data type sizes are crucial for this implementation to 59 * function properly and portably in terms of interoperability with minidumps 60 * produced by DbgHelp on Windows, a set of primitive types with known sizes 61 * are used as the basis of each structure defined by this file. DbgHelp 62 * on Windows is assumed to be the reference implementation; this file 63 * seeks to provide a cross-platform compatible implementation. To avoid 64 * collisions with the types and values defined and used by DbgHelp in the 65 * event that this implementation is used on Windows, each type and value 66 * defined here is given a new name, beginning with "MD". Names of the 67 * equivalent types and values in the Windows Platform SDK are given in 68 * comments. 69 * 70 * Author: Mark Mentovai 71 * Change to split into its own file: Neal Sidhwaney */ 72 73 /* 74 * Breakpad minidump extension for PowerPC support. Based on Darwin/Mac OS X' 75 * mach/ppc/_types.h 76 */ 77 78 #ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__ 79 #define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__ 80 81 #define MD_FLOATINGSAVEAREA_PPC_FPR_COUNT 32 82 83 typedef struct { 84 /* fpregs is a double[32] in mach/ppc/_types.h, but a u_int64_t is used 85 * here for precise sizing. */ 86 u_int64_t fpregs[MD_FLOATINGSAVEAREA_PPC_FPR_COUNT]; 87 u_int32_t fpscr_pad; 88 u_int32_t fpscr; /* Status/control */ 89 } MDFloatingSaveAreaPPC; /* Based on ppc_float_state */ 90 91 92 #define MD_VECTORSAVEAREA_PPC_VR_COUNT 32 93 94 typedef struct { 95 /* Vector registers (including vscr) are 128 bits, but mach/ppc/_types.h 96 * exposes them as four 32-bit quantities. */ 97 u_int128_t save_vr[MD_VECTORSAVEAREA_PPC_VR_COUNT]; 98 u_int128_t save_vscr; /* Status/control */ 99 u_int32_t save_pad5[4]; 100 u_int32_t save_vrvalid; /* Identifies which vector registers are saved */ 101 u_int32_t save_pad6[7]; 102 } MDVectorSaveAreaPPC; /* ppc_vector_state */ 103 104 105 #define MD_CONTEXT_PPC_GPR_COUNT 32 106 107 /* Use the same 32-bit alignment when accessing this structure from 64-bit code 108 * as is used natively in 32-bit code. #pragma pack is a MSVC extension 109 * supported by gcc. */ 110 #if defined(__SUNPRO_C) || defined(__SUNPRO_CC) 111 #pragma pack(4) 112 #else 113 #pragma pack(push, 4) 114 #endif 115 116 typedef struct { 117 /* context_flags is not present in ppc_thread_state, but it aids 118 * identification of MDRawContextPPC among other raw context types, 119 * and it guarantees alignment when we get to float_save. */ 120 u_int32_t context_flags; 121 122 u_int32_t srr0; /* Machine status save/restore: stores pc 123 * (instruction) */ 124 u_int32_t srr1; /* Machine status save/restore: stores msr 125 * (ps, program/machine state) */ 126 /* ppc_thread_state contains 32 fields, r0 .. r31. Here, an array is 127 * used for brevity. */ 128 u_int32_t gpr[MD_CONTEXT_PPC_GPR_COUNT]; 129 u_int32_t cr; /* Condition */ 130 u_int32_t xer; /* Integer (fiXed-point) exception */ 131 u_int32_t lr; /* Link */ 132 u_int32_t ctr; /* Count */ 133 u_int32_t mq; /* Multiply/Quotient (PPC 601, POWER only) */ 134 u_int32_t vrsave; /* Vector save */ 135 136 /* float_save and vector_save aren't present in ppc_thread_state, but 137 * are represented in separate structures that still define a thread's 138 * context. */ 139 MDFloatingSaveAreaPPC float_save; 140 MDVectorSaveAreaPPC vector_save; 141 } MDRawContextPPC; /* Based on ppc_thread_state */ 142 143 #if defined(__SUNPRO_C) || defined(__SUNPRO_CC) 144 #pragma pack(0) 145 #else 146 #pragma pack(pop) 147 #endif 148 149 /* For (MDRawContextPPC).context_flags. These values indicate the type of 150 * context stored in the structure. MD_CONTEXT_PPC is Breakpad-defined. Its 151 * value was chosen to avoid likely conflicts with MD_CONTEXT_* for other 152 * CPUs. */ 153 #define MD_CONTEXT_PPC 0x20000000 154 #define MD_CONTEXT_PPC_BASE (MD_CONTEXT_PPC | 0x00000001) 155 #define MD_CONTEXT_PPC_FLOATING_POINT (MD_CONTEXT_PPC | 0x00000008) 156 #define MD_CONTEXT_PPC_VECTOR (MD_CONTEXT_PPC | 0x00000020) 157 158 #define MD_CONTEXT_PPC_FULL MD_CONTEXT_PPC_BASE 159 #define MD_CONTEXT_PPC_ALL (MD_CONTEXT_PPC_FULL | \ 160 MD_CONTEXT_PPC_FLOATING_POINT | \ 161 MD_CONTEXT_PPC_VECTOR) 162 163 #endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__ */ 164