1/* Copyright (c) 2008, 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 ppc64.  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: Neal Sidhwaney */
71
72
73/*
74 * Breakpad minidump extension for PPC64 support.  Based on Darwin/Mac OS X'
75 * mach/ppc/_types.h
76 */
77
78#ifndef GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC64_H__
79#define GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC64_H__
80
81#include "minidump_cpu_ppc.h"
82
83// these types are the same in ppc64 & ppc
84typedef MDFloatingSaveAreaPPC MDFloatingSaveAreaPPC64;
85typedef MDVectorSaveAreaPPC MDVectorSaveAreaPPC64;
86
87#define MD_CONTEXT_PPC64_GPR_COUNT MD_CONTEXT_PPC_GPR_COUNT
88
89typedef struct {
90  /* context_flags is not present in ppc_thread_state, but it aids
91   * identification of MDRawContextPPC among other raw context types,
92   * and it guarantees alignment when we get to float_save. */
93  uint64_t              context_flags;
94
95  uint64_t              srr0;    /* Machine status save/restore: stores pc
96                                  * (instruction) */
97  uint64_t              srr1;    /* Machine status save/restore: stores msr
98                                  * (ps, program/machine state) */
99  /* ppc_thread_state contains 32 fields, r0 .. r31.  Here, an array is
100   * used for brevity. */
101  uint64_t              gpr[MD_CONTEXT_PPC64_GPR_COUNT];
102  uint64_t              cr;      /* Condition */
103  uint64_t              xer;     /* Integer (fiXed-point) exception */
104  uint64_t              lr;      /* Link */
105  uint64_t              ctr;     /* Count */
106  uint64_t              vrsave;  /* Vector save */
107
108  /* float_save and vector_save aren't present in ppc_thread_state, but
109   * are represented in separate structures that still define a thread's
110   * context. */
111  MDFloatingSaveAreaPPC float_save;
112  MDVectorSaveAreaPPC   vector_save;
113} MDRawContextPPC64;  /* Based on ppc_thread_state */
114
115/* For (MDRawContextPPC).context_flags.  These values indicate the type of
116 * context stored in the structure.  MD_CONTEXT_PPC is Breakpad-defined.  Its
117 * value was chosen to avoid likely conflicts with MD_CONTEXT_* for other
118 * CPUs. */
119#define MD_CONTEXT_PPC64                0x01000000
120#define MD_CONTEXT_PPC64_BASE           (MD_CONTEXT_PPC64 | 0x00000001)
121#define MD_CONTEXT_PPC64_FLOATING_POINT (MD_CONTEXT_PPC64 | 0x00000008)
122#define MD_CONTEXT_PPC64_VECTOR         (MD_CONTEXT_PPC64 | 0x00000020)
123
124#define MD_CONTEXT_PPC64_FULL           MD_CONTEXT_PPC64_BASE
125#define MD_CONTEXT_PPC64_ALL            (MD_CONTEXT_PPC64_FULL | \
126                                         MD_CONTEXT_PPC64_FLOATING_POINT | \
127                                         MD_CONTEXT_PPC64_VECTOR)
128
129#endif /* GOOGLE_BREAKPAD_COMMON_MINIDUMP_CPU_PPC64_H__ */
130