1/* Copyright (c) 2006, 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 ppc. 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 ensuring
41 * ensuring that all members are aligned on their natural boundaries. In
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 * These definitions may be extended to support handling minidump files
56 * for other CPUs and other operating systems.
57 *
58 * Because precise data type sizes are crucial for this implementation to
59 * function properly and portably in terms of interoperability with minidumps
60 * produced by DbgHelp on Windows, a set of primitive types with known sizes
61 * are used as the basis of each structure defined by this file. DbgHelp
62 * on Windows is assumed to be the reference implementation; this file
63 * seeks to provide a cross-platform compatible implementation. To avoid
64 * collisions with the types and values defined and used by DbgHelp in the
65 * event that this implementation is used on Windows, each type and value
66 * defined here is given a new name, beginning with "MD". Names of the
67 * equivalent types and values in the Windows Platform SDK are given in
68 * comments.
69 *
70 * Author: Mark Mentovai
71 * Change to split into its own file: Neal Sidhwaney */
72
73/*
74 * Breakpad minidump extension for PowerPC support. Based on Darwin/Mac OS X'
75 * mach/ppc/_types.h
76 */
77
78#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__
79#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__
80
81#define MD_FLOATINGSAVEAREA_PPC_FPR_COUNT 32
82
83typedef struct {
84 /* fpregs is a double[32] in mach/ppc/_types.h, but a uint64_t is used
85 * here for precise sizing. */
86 uint64_t fpregs[MD_FLOATINGSAVEAREA_PPC_FPR_COUNT];
87 uint32_t fpscr_pad;
88 uint32_t fpscr; /* Status/control */
89} MDFloatingSaveAreaPPC; /* Based on ppc_float_state */
90
91
92#define MD_VECTORSAVEAREA_PPC_VR_COUNT 32
93
94typedef struct {
95 /* Vector registers (including vscr) are 128 bits, but mach/ppc/_types.h
96 * exposes them as four 32-bit quantities. */
97 uint128_struct save_vr[MD_VECTORSAVEAREA_PPC_VR_COUNT];
98 uint128_struct save_vscr; /* Status/control */
99 uint32_t save_pad5[4];
100 uint32_t save_vrvalid; /* Indicates which vector registers are saved */
101 uint32_t save_pad6[7];
102} MDVectorSaveAreaPPC; /* ppc_vector_state */
103
104
105#define MD_CONTEXT_PPC_GPR_COUNT 32
106
107/* Use the same 32-bit alignment when accessing this structure from 64-bit code
108 * as is used natively in 32-bit code. #pragma pack is a MSVC extension
109 * supported by gcc. */
110#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
111#pragma pack(4)
112#else
113#pragma pack(push, 4)
114#endif
115
116typedef struct {
117 /* context_flags is not present in ppc_thread_state, but it aids
118 * identification of MDRawContextPPC among other raw context types,
119 * and it guarantees alignment when we get to float_save. */
120 uint32_t context_flags;
121
122 uint32_t srr0; /* Machine status save/restore: stores pc
123 * (instruction) */
124 uint32_t srr1; /* Machine status save/restore: stores msr
125 * (ps, program/machine state) */
126 /* ppc_thread_state contains 32 fields, r0 .. r31. Here, an array is
127 * used for brevity. */
128 uint32_t gpr[MD_CONTEXT_PPC_GPR_COUNT];
129 uint32_t cr; /* Condition */
130 uint32_t xer; /* Integer (fiXed-point) exception */
131 uint32_t lr; /* Link */
132 uint32_t ctr; /* Count */
133 uint32_t mq; /* Multiply/Quotient (PPC 601, POWER only) */
134 uint32_t vrsave; /* Vector save */
135
136 /* float_save and vector_save aren't present in ppc_thread_state, but
137 * are represented in separate structures that still define a thread's
138 * context. */
139 MDFloatingSaveAreaPPC float_save;
140 MDVectorSaveAreaPPC vector_save;
141} MDRawContextPPC; /* Based on ppc_thread_state */
142
143/* Indices into gpr for registers with a dedicated or conventional purpose. */
144enum MDPPCRegisterNumbers {
145 MD_CONTEXT_PPC_REG_SP = 1
146};
147
148#if defined(__SUNPRO_C) || defined(__SUNPRO_CC)
149#pragma pack(0)
150#else
151#pragma pack(pop)
152#endif
153
154/* For (MDRawContextPPC).context_flags. These values indicate the type of
155 * context stored in the structure. MD_CONTEXT_PPC is Breakpad-defined. Its
156 * value was chosen to avoid likely conflicts with MD_CONTEXT_* for other
157 * CPUs. */
158#define MD_CONTEXT_PPC 0x20000000
159#define MD_CONTEXT_PPC_BASE (MD_CONTEXT_PPC | 0x00000001)
160#define MD_CONTEXT_PPC_FLOATING_POINT (MD_CONTEXT_PPC | 0x00000008)
161#define MD_CONTEXT_PPC_VECTOR (MD_CONTEXT_PPC | 0x00000020)
162
163#define MD_CONTEXT_PPC_FULL MD_CONTEXT_PPC_BASE
164#define MD_CONTEXT_PPC_ALL (MD_CONTEXT_PPC_FULL | \
165 MD_CONTEXT_PPC_FLOATING_POINT | \
166 MD_CONTEXT_PPC_VECTOR)
167
168#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC_H__ */
169