1 /* Copyright (c) 2013, 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 MIPS. 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 41 * ensuring that all members are aligned on their natural boundaries. 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 * Because precise data type sizes are crucial for this implementation to 56 * function properly and portably, a set of primitive types with known sizes 57 * are used as the basis of each structure defined by this file. 58 * 59 * Author: Chris Dearman 60 */ 61 62 /* 63 * MIPS support 64 */ 65 66 #ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_MIPS_H__ 67 #define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_MIPS_H__ 68 69 #if defined(__mips__) && !defined(__ANDROID__) 70 typedef struct { 71 uint64_t regs[32]; 72 uint64_t lo; 73 uint64_t hi; 74 uint64_t epc; 75 uint64_t badvaddr; 76 uint64_t status; 77 uint64_t cause; 78 } user_regs_struct; 79 80 typedef struct { 81 uint64_t regs[32]; 82 uint32_t fpcsr; 83 uint32_t fir; 84 } user_fpregs_struct; 85 #endif 86 87 #define MD_CONTEXT_MIPS_GPR_COUNT 32 88 #define MD_FLOATINGSAVEAREA_MIPS_FPR_COUNT 32 89 #define MD_CONTEXT_MIPS_DSP_COUNT 3 90 91 /* 92 * Note that these structures *do not* map directly to the CONTEXT 93 * structure defined in WinNT.h in the Windows Mobile SDK. That structure 94 * does not accomodate VFPv3, and I'm unsure if it was ever used in the 95 * wild anyway, as Windows CE only seems to produce "cedumps" which 96 * are not exactly minidumps. 97 */ 98 typedef struct { 99 /* 32 64-bit floating point registers, f0..f31 */ 100 uint64_t regs[MD_FLOATINGSAVEAREA_MIPS_FPR_COUNT]; 101 102 uint32_t fpcsr; /* FPU status register. */ 103 uint32_t fir; /* FPU implementation register. */ 104 } MDFloatingSaveAreaMIPS; 105 106 typedef struct { 107 /* The next field determines the layout of the structure, and which parts 108 * of it are populated. 109 */ 110 uint32_t context_flags; 111 uint32_t _pad0; 112 113 /* 32 64-bit integer registers, r0..r31. 114 * Note the following fixed uses: 115 * r30 is the stack pointer. 116 * r31 is the return address (link register). 117 */ 118 uint64_t iregs[MD_CONTEXT_MIPS_GPR_COUNT]; 119 120 /* multiply/divide result. */ 121 uint64_t mdhi, mdlo; 122 123 /* DSP accumulators. */ 124 uint32_t hi[MD_CONTEXT_MIPS_DSP_COUNT]; 125 uint32_t lo[MD_CONTEXT_MIPS_DSP_COUNT]; 126 uint32_t dsp_control; 127 uint32_t _pad1; 128 129 uint64_t epc; 130 uint64_t badvaddr; 131 uint32_t status; 132 uint32_t cause; 133 134 /* The next field is included with MD_CONTEXT_MIPS_FLOATING_POINT. */ 135 MDFloatingSaveAreaMIPS float_save; 136 137 } MDRawContextMIPS; 138 139 /* Indices into iregs for registers with a dedicated or conventional 140 * purpose. 141 */ 142 enum MDMIPSRegisterNumbers { 143 MD_CONTEXT_MIPS_REG_S0 = 16, 144 MD_CONTEXT_MIPS_REG_S1 = 17, 145 MD_CONTEXT_MIPS_REG_S2 = 18, 146 MD_CONTEXT_MIPS_REG_S3 = 19, 147 MD_CONTEXT_MIPS_REG_S4 = 20, 148 MD_CONTEXT_MIPS_REG_S5 = 21, 149 MD_CONTEXT_MIPS_REG_S6 = 22, 150 MD_CONTEXT_MIPS_REG_S7 = 23, 151 MD_CONTEXT_MIPS_REG_GP = 28, 152 MD_CONTEXT_MIPS_REG_SP = 29, 153 MD_CONTEXT_MIPS_REG_FP = 30, 154 MD_CONTEXT_MIPS_REG_RA = 31, 155 }; 156 157 /* For (MDRawContextMIPS).context_flags. These values indicate the type of 158 * context stored in the structure. */ 159 /* CONTEXT_MIPS from the Windows CE 5.0 SDK. This value isn't correct 160 * because this bit can be used for flags. Presumably this value was 161 * never actually used in minidumps, but only in "CEDumps" which 162 * are a whole parallel minidump file format for Windows CE. 163 * Therefore, Breakpad defines its own value for MIPS CPUs. 164 */ 165 #define MD_CONTEXT_MIPS 0x00040000 166 #define MD_CONTEXT_MIPS_INTEGER (MD_CONTEXT_MIPS | 0x00000002) 167 #define MD_CONTEXT_MIPS_FLOATING_POINT (MD_CONTEXT_MIPS | 0x00000004) 168 #define MD_CONTEXT_MIPS_DSP (MD_CONTEXT_MIPS | 0x00000008) 169 170 #define MD_CONTEXT_MIPS_FULL (MD_CONTEXT_MIPS_INTEGER | \ 171 MD_CONTEXT_MIPS_FLOATING_POINT | \ 172 MD_CONTEXT_MIPS_DSP) 173 174 #define MD_CONTEXT_MIPS_ALL (MD_CONTEXT_MIPS_INTEGER | \ 175 MD_CONTEXT_MIPS_FLOATING_POINT \ 176 MD_CONTEXT_MIPS_DSP) 177 178 #endif // GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_MIPS_H__ 179