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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 u_int64_t fpscr; /* FPU status register */ | |
81 | |
82 /* 32 64-bit floating point registers, d0 .. d31. */ | |
83 u_int64_t regs[MD_FLOATINGSAVEAREA_ARM_FPR_COUNT]; | |
84 | |
85 /* Miscellaneous control words */ | |
86 u_int32_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 u_int32_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 u_int32_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 u_int32_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_FP = 11, | |
124 MD_CONTEXT_ARM_REG_SP = 13, | |
125 MD_CONTEXT_ARM_REG_LR = 14, | |
126 MD_CONTEXT_ARM_REG_PC = 15 | |
127 }; | |
128 | |
129 /* For (MDRawContextARM).context_flags. These values indicate the type of | |
130 * context stored in the structure. */ | |
131 #define MD_CONTEXT_ARM_INTEGER (MD_CONTEXT_ARM | 0x00000002) | |
132 #define MD_CONTEXT_ARM_FLOATING_POINT (MD_CONTEXT_ARM | 0x00000004) | |
133 | |
134 #define MD_CONTEXT_ARM_FULL (MD_CONTEXT_ARM_INTEGER | \ | |
135 MD_CONTEXT_ARM_FLOATING_POINT) | |
136 | |
137 #define MD_CONTEXT_ARM_ALL (MD_CONTEXT_ARM_INTEGER | \ | |
138 MD_CONTEXT_ARM_FLOATING_POINT) | |
139 | |
140 #endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM_H__ */ | |
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