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 | #define MD_CONTEXT_MIPS_GPR_COUNT 32 |
70 | #define MD_FLOATINGSAVEAREA_MIPS_FPR_COUNT 32 |
71 | #define MD_CONTEXT_MIPS_DSP_COUNT 3 |
72 | |
73 | /* |
74 | * Note that these structures *do not* map directly to the CONTEXT |
75 | * structure defined in WinNT.h in the Windows Mobile SDK. That structure |
76 | * does not accomodate VFPv3, and I'm unsure if it was ever used in the |
77 | * wild anyway, as Windows CE only seems to produce "cedumps" which |
78 | * are not exactly minidumps. |
79 | */ |
80 | typedef struct { |
81 | /* 32 64-bit floating point registers, f0..f31 */ |
82 | uint64_t regs[MD_FLOATINGSAVEAREA_MIPS_FPR_COUNT]; |
83 | |
84 | uint32_t fpcsr; /* FPU status register. */ |
85 | uint32_t fir; /* FPU implementation register. */ |
86 | } MDFloatingSaveAreaMIPS; |
87 | |
88 | typedef struct { |
89 | /* The next field determines the layout of the structure, and which parts |
90 | * of it are populated. |
91 | */ |
92 | uint32_t context_flags; |
93 | uint32_t _pad0; |
94 | |
95 | /* 32 64-bit integer registers, r0..r31. |
96 | * Note the following fixed uses: |
97 | * r29 is the stack pointer. |
98 | * r31 is the return address. |
99 | */ |
100 | uint64_t iregs[MD_CONTEXT_MIPS_GPR_COUNT]; |
101 | |
102 | /* multiply/divide result. */ |
103 | uint64_t mdhi, mdlo; |
104 | |
105 | /* DSP accumulators. */ |
106 | uint32_t hi[MD_CONTEXT_MIPS_DSP_COUNT]; |
107 | uint32_t lo[MD_CONTEXT_MIPS_DSP_COUNT]; |
108 | uint32_t dsp_control; |
109 | uint32_t _pad1; |
110 | |
111 | uint64_t epc; |
112 | uint64_t badvaddr; |
113 | uint32_t status; |
114 | uint32_t cause; |
115 | |
116 | /* The next field is included with MD_CONTEXT_MIPS_FLOATING_POINT. */ |
117 | MDFloatingSaveAreaMIPS float_save; |
118 | |
119 | } MDRawContextMIPS; |
120 | |
121 | /* Indices into iregs for registers with a dedicated or conventional |
122 | * purpose. |
123 | */ |
124 | enum MDMIPSRegisterNumbers { |
125 | MD_CONTEXT_MIPS_REG_S0 = 16, |
126 | MD_CONTEXT_MIPS_REG_S1 = 17, |
127 | MD_CONTEXT_MIPS_REG_S2 = 18, |
128 | MD_CONTEXT_MIPS_REG_S3 = 19, |
129 | MD_CONTEXT_MIPS_REG_S4 = 20, |
130 | MD_CONTEXT_MIPS_REG_S5 = 21, |
131 | MD_CONTEXT_MIPS_REG_S6 = 22, |
132 | MD_CONTEXT_MIPS_REG_S7 = 23, |
133 | MD_CONTEXT_MIPS_REG_GP = 28, |
134 | MD_CONTEXT_MIPS_REG_SP = 29, |
135 | MD_CONTEXT_MIPS_REG_FP = 30, |
136 | MD_CONTEXT_MIPS_REG_RA = 31, |
137 | }; |
138 | |
139 | /* For (MDRawContextMIPS).context_flags. These values indicate the type of |
140 | * context stored in the structure. */ |
141 | /* CONTEXT_MIPS from the Windows CE 5.0 SDK. This value isn't correct |
142 | * because this bit can be used for flags. Presumably this value was |
143 | * never actually used in minidumps, but only in "CEDumps" which |
144 | * are a whole parallel minidump file format for Windows CE. |
145 | * Therefore, Breakpad defines its own value for MIPS CPUs. |
146 | */ |
147 | #define MD_CONTEXT_MIPS 0x00040000 |
148 | #define MD_CONTEXT_MIPS_INTEGER (MD_CONTEXT_MIPS | 0x00000002) |
149 | #define MD_CONTEXT_MIPS_FLOATING_POINT (MD_CONTEXT_MIPS | 0x00000004) |
150 | #define MD_CONTEXT_MIPS_DSP (MD_CONTEXT_MIPS | 0x00000008) |
151 | |
152 | #define MD_CONTEXT_MIPS_FULL (MD_CONTEXT_MIPS_INTEGER | \ |
153 | MD_CONTEXT_MIPS_FLOATING_POINT | \ |
154 | MD_CONTEXT_MIPS_DSP) |
155 | |
156 | #define MD_CONTEXT_MIPS_ALL (MD_CONTEXT_MIPS_INTEGER | \ |
157 | MD_CONTEXT_MIPS_FLOATING_POINT \ |
158 | MD_CONTEXT_MIPS_DSP) |
159 | |
160 | /** |
161 | * Breakpad defines for MIPS64 |
162 | */ |
163 | #define MD_CONTEXT_MIPS64 0x00080000 |
164 | #define MD_CONTEXT_MIPS64_INTEGER (MD_CONTEXT_MIPS64 | 0x00000002) |
165 | #define MD_CONTEXT_MIPS64_FLOATING_POINT (MD_CONTEXT_MIPS64 | 0x00000004) |
166 | #define MD_CONTEXT_MIPS64_DSP (MD_CONTEXT_MIPS64 | 0x00000008) |
167 | |
168 | #define MD_CONTEXT_MIPS64_FULL (MD_CONTEXT_MIPS64_INTEGER | \ |
169 | MD_CONTEXT_MIPS64_FLOATING_POINT | \ |
170 | MD_CONTEXT_MIPS64_DSP) |
171 | |
172 | #define MD_CONTEXT_MIPS64_ALL (MD_CONTEXT_MIPS64_INTEGER | \ |
173 | MD_CONTEXT_MIPS64_FLOATING_POINT \ |
174 | MD_CONTEXT_MIPS64_DSP) |
175 | |
176 | #endif // GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_MIPS_H__ |
177 | |