1/* Copyright 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 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: Colin Blundell
60 */
61
62/*
63 * ARM64 support
64 */
65
66#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM64_H__
67#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM64_H__
68
69#include "google_breakpad/common/breakpad_types.h"
70
71#define MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT 32
72#define MD_CONTEXT_ARM64_GPR_COUNT 33
73
74typedef struct {
75 /* 32 128-bit floating point registers, d0 .. d31. */
76 uint128_struct regs[MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT];
77
78 uint32_t fpcr; /* FPU control register */
79 uint32_t fpsr; /* FPU status register */
80} MDFloatingSaveAreaARM64;
81
82/* For (MDRawContextARM64).context_flags. These values indicate the type of
83 * context stored in the structure. */
84#define MD_CONTEXT_ARM64 0x00400000
85#define MD_CONTEXT_ARM64_CONTROL (MD_CONTEXT_ARM64 | 0x00000001)
86#define MD_CONTEXT_ARM64_INTEGER (MD_CONTEXT_ARM64 | 0x00000002)
87#define MD_CONTEXT_ARM64_FLOATING_POINT (MD_CONTEXT_ARM64 | 0x00000004)
88#define MD_CONTEXT_ARM64_DEBUG (MD_CONTEXT_ARM64 | 0x00000008)
89#define MD_CONTEXT_ARM64_FULL (MD_CONTEXT_ARM64_CONTROL | \
90 MD_CONTEXT_ARM64_INTEGER | \
91 MD_CONTEXT_ARM64_FLOATING_POINT)
92#define MD_CONTEXT_ARM64_ALL (MD_CONTEXT_ARM64_FULL | MD_CONTEXT_ARM64_DEBUG)
93
94typedef struct {
95 /* Determines which fields of this struct are populated */
96 uint32_t context_flags;
97
98 /* CPSR (flags, basically): 32 bits:
99 bit 31 - N (negative)
100 bit 30 - Z (zero)
101 bit 29 - C (carry)
102 bit 28 - V (overflow)
103 bit 27 - Q (saturation flag, sticky)
104 All other fields -- ignore */
105 uint32_t cpsr;
106
107 /* 33 64-bit integer registers, x0 .. x31 + the PC
108 * Note the following fixed uses:
109 * x29 is the frame pointer
110 * x30 is the link register
111 * x31 is the stack pointer
112 * The PC is effectively x32.
113 */
114 uint64_t iregs[MD_CONTEXT_ARM64_GPR_COUNT];
115
116 /* The next field is included with MD_CONTEXT64_ARM_FLOATING_POINT */
117 MDFloatingSaveAreaARM64 float_save;
118
119 uint32_t bcr[8];
120 uint64_t bvr[8];
121 uint32_t wcr[2];
122 uint64_t wvr[2];
123} MDRawContextARM64;
124
125typedef struct {
126 uint32_t fpsr; /* FPU status register */
127 uint32_t fpcr; /* FPU control register */
128
129 /* 32 128-bit floating point registers, d0 .. d31. */
130 uint128_struct regs[MD_FLOATINGSAVEAREA_ARM64_FPR_COUNT];
131} MDFloatingSaveAreaARM64_Old;
132
133/* Use the same 32-bit alignment when accessing this structure from 64-bit code
134 * as is used natively in 32-bit code. */
135#pragma pack(push, 4)
136
137typedef struct {
138 /* The next field determines the layout of the structure, and which parts
139 * of it are populated
140 */
141 uint64_t context_flags;
142
143 /* 33 64-bit integer registers, x0 .. x31 + the PC
144 * Note the following fixed uses:
145 * x29 is the frame pointer
146 * x30 is the link register
147 * x31 is the stack pointer
148 * The PC is effectively x32.
149 */
150 uint64_t iregs[MD_CONTEXT_ARM64_GPR_COUNT];
151
152 /* CPSR (flags, basically): 32 bits:
153 bit 31 - N (negative)
154 bit 30 - Z (zero)
155 bit 29 - C (carry)
156 bit 28 - V (overflow)
157 bit 27 - Q (saturation flag, sticky)
158 All other fields -- ignore */
159 uint32_t cpsr;
160
161 /* The next field is included with MD_CONTEXT64_ARM_FLOATING_POINT */
162 MDFloatingSaveAreaARM64_Old float_save;
163
164} MDRawContextARM64_Old;
165
166#pragma pack(pop)
167
168/* Indices into iregs for registers with a dedicated or conventional
169 * purpose.
170 */
171enum MDARM64RegisterNumbers {
172 MD_CONTEXT_ARM64_REG_FP = 29,
173 MD_CONTEXT_ARM64_REG_LR = 30,
174 MD_CONTEXT_ARM64_REG_SP = 31,
175 MD_CONTEXT_ARM64_REG_PC = 32
176};
177
178/* For (MDRawContextARM64_Old).context_flags. These values indicate the type of
179 * context stored in the structure. MD_CONTEXT_ARM64_OLD is Breakpad-defined.
180 * This value was chosen to avoid likely conflicts with MD_CONTEXT_*
181 * for other CPUs. */
182#define MD_CONTEXT_ARM64_OLD 0x80000000
183#define MD_CONTEXT_ARM64_INTEGER_OLD (MD_CONTEXT_ARM64_OLD | 0x00000002)
184#define MD_CONTEXT_ARM64_FLOATING_POINT_OLD (MD_CONTEXT_ARM64_OLD | 0x00000004)
185
186#define MD_CONTEXT_ARM64_FULL_OLD (MD_CONTEXT_ARM64_INTEGER_OLD | \
187 MD_CONTEXT_ARM64_FLOATING_POINT_OLD)
188
189#define MD_CONTEXT_ARM64_ALL_OLD (MD_CONTEXT_ARM64_INTEGER_OLD | \
190 MD_CONTEXT_ARM64_FLOATING_POINT_OLD)
191
192#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_ARM64_H__ */
193