1 /* Copyright (c) 2009, 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 ARM. 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: Julian Seward 60 */ 61 62 /* 63 * ARM support 64 */ 65 66 #ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__ 67 #define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__ 68 69 #define MD_FLOATINGSAVEAREA_ARM_FPR_COUNT 32 70 #define MD_FLOATINGSAVEAREA_ARM_FPEXTRA_COUNT 8 71 72 /* 73 * Note that these structures *do not* map directly to the CONTEXT 74 * structure defined in WinNT.h in the Windows Mobile SDK. That structure 75 * does not accomodate VFPv3, and I'm unsure if it was ever used in the 76 * wild anyway, as Windows CE only seems to produce "cedumps" which 77 * are not exactly minidumps. 78 */ 79 typedef struct { 80 uint64_t fpscr; /* FPU status register */ 81 82 /* 32 64-bit floating point registers, d0 .. d31. */ 83 uint64_t regs[MD_FLOATINGSAVEAREA_ARM_FPR_COUNT]; 84 85 /* Miscellaneous control words */ 86 uint32_t extra[MD_FLOATINGSAVEAREA_ARM_FPEXTRA_COUNT]; 87 } MDFloatingSaveAreaARM; 88 89 #define MD_CONTEXT_ARM_GPR_COUNT 16 90 91 typedef struct { 92 /* The next field determines the layout of the structure, and which parts 93 * of it are populated 94 */ 95 uint32_t context_flags; 96 97 /* 16 32-bit integer registers, r0 .. r15 98 * Note the following fixed uses: 99 * r13 is the stack pointer 100 * r14 is the link register 101 * r15 is the program counter 102 */ 103 uint32_t iregs[MD_CONTEXT_ARM_GPR_COUNT]; 104 105 /* CPSR (flags, basically): 32 bits: 106 bit 31 - N (negative) 107 bit 30 - Z (zero) 108 bit 29 - C (carry) 109 bit 28 - V (overflow) 110 bit 27 - Q (saturation flag, sticky) 111 All other fields -- ignore */ 112 uint32_t cpsr; 113 114 /* The next field is included with MD_CONTEXT_ARM_FLOATING_POINT */ 115 MDFloatingSaveAreaARM float_save; 116 117 } MDRawContextARM; 118 119 /* Indices into iregs for registers with a dedicated or conventional 120 * purpose. 121 */ 122 enum MDARMRegisterNumbers { 123 MD_CONTEXT_ARM_REG_IOS_FP = 7, 124 MD_CONTEXT_ARM_REG_FP = 11, 125 MD_CONTEXT_ARM_REG_SP = 13, 126 MD_CONTEXT_ARM_REG_LR = 14, 127 MD_CONTEXT_ARM_REG_PC = 15 128 }; 129 130 /* For (MDRawContextARM).context_flags. These values indicate the type of 131 * context stored in the structure. */ 132 /* CONTEXT_ARM from the Windows CE 5.0 SDK. This value isn't correct 133 * because this bit can be used for flags. Presumably this value was 134 * never actually used in minidumps, but only in "CEDumps" which 135 * are a whole parallel minidump file format for Windows CE. 136 * Therefore, Breakpad defines its own value for ARM CPUs. 137 */ 138 #define MD_CONTEXT_ARM_OLD 0x00000040 139 /* This value was chosen to avoid likely conflicts with MD_CONTEXT_* 140 * for other CPUs. */ 141 #define MD_CONTEXT_ARM 0x40000000 142 #define MD_CONTEXT_ARM_INTEGER (MD_CONTEXT_ARM | 0x00000002) 143 #define MD_CONTEXT_ARM_FLOATING_POINT (MD_CONTEXT_ARM | 0x00000004) 144 145 #define MD_CONTEXT_ARM_FULL (MD_CONTEXT_ARM_INTEGER | \ 146 MD_CONTEXT_ARM_FLOATING_POINT) 147 148 #define MD_CONTEXT_ARM_ALL (MD_CONTEXT_ARM_INTEGER | \ 149 MD_CONTEXT_ARM_FLOATING_POINT) 150 151 #endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__ */ 152