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1 // Copyright (c) 2012, 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 // This header can be included either from a C, C++ or Assembly file.
31 // Its purpose is to contain constants that must match the offsets of
32 // various fields in ucontext_t.
33 //
34 // They should match the definitions from
35 // src/common/android/include/sys/ucontext.h
36 //
37 // Used by src/common/android/breakpad_getcontext.S
38 // Tested by src/common/android/testing/breakpad_getcontext_unittest.cc
39 
40 #ifndef GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H
41 #define GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H
42 
43 #if defined(__arm__)
44 
45 #define  MCONTEXT_GREGS_OFFSET     32
46 #define  UCONTEXT_SIGMASK_OFFSET   104
47 
48 #elif defined(__aarch64__)
49 
50 #define  UCONTEXT_SIGMASK_OFFSET     40
51 
52 #define  MCONTEXT_GREGS_OFFSET       184
53 #define  MCONTEXT_SP_OFFSET          432
54 #define  MCONTEXT_PC_OFFSET          440
55 #define  MCONTEXT_PSTATE_OFFSET      448
56 #define  MCONTEXT_EXTENSION_OFFSET   464
57 
58 #define  FPSIMD_MAGIC                0x46508001
59 
60 #define  FPSIMD_CONTEXT_MAGIC_OFFSET 0
61 #define  FPSIMD_CONTEXT_SIZE_OFFSET  4
62 #define  FPSIMD_CONTEXT_FPSR_OFFSET  8
63 #define  FPSIMD_CONTEXT_FPCR_OFFSET  12
64 #define  FPSIMD_CONTEXT_VREGS_OFFSET 16
65 #define  FPSIMD_CONTEXT_SIZE         528
66 
67 #define  REGISTER_SIZE               8
68 #define  SIMD_REGISTER_SIZE          16
69 
70 #elif defined(__i386__)
71 
72 #define  MCONTEXT_GREGS_OFFSET     20
73 #define  MCONTEXT_GS_OFFSET        (MCONTEXT_GREGS_OFFSET + 0*4)
74 #define  MCONTEXT_FS_OFFSET        (MCONTEXT_GREGS_OFFSET + 1*4)
75 #define  MCONTEXT_ES_OFFSET        (MCONTEXT_GREGS_OFFSET + 2*4)
76 #define  MCONTEXT_DS_OFFSET        (MCONTEXT_GREGS_OFFSET + 3*4)
77 #define  MCONTEXT_EDI_OFFSET       (MCONTEXT_GREGS_OFFSET + 4*4)
78 #define  MCONTEXT_ESI_OFFSET       (MCONTEXT_GREGS_OFFSET + 5*4)
79 #define  MCONTEXT_EBP_OFFSET       (MCONTEXT_GREGS_OFFSET + 6*4)
80 #define  MCONTEXT_ESP_OFFSET       (MCONTEXT_GREGS_OFFSET + 7*4)
81 #define  MCONTEXT_EBX_OFFSET       (MCONTEXT_GREGS_OFFSET + 8*4)
82 #define  MCONTEXT_EDX_OFFSET       (MCONTEXT_GREGS_OFFSET + 9*4)
83 #define  MCONTEXT_ECX_OFFSET       (MCONTEXT_GREGS_OFFSET + 10*4)
84 #define  MCONTEXT_EAX_OFFSET       (MCONTEXT_GREGS_OFFSET + 11*4)
85 #define  MCONTEXT_TRAPNO_OFFSET    (MCONTEXT_GREGS_OFFSET + 12*4)
86 #define  MCONTEXT_ERR_OFFSET       (MCONTEXT_GREGS_OFFSET + 13*4)
87 #define  MCONTEXT_EIP_OFFSET       (MCONTEXT_GREGS_OFFSET + 14*4)
88 #define  MCONTEXT_CS_OFFSET        (MCONTEXT_GREGS_OFFSET + 15*4)
89 #define  MCONTEXT_EFL_OFFSET       (MCONTEXT_GREGS_OFFSET + 16*4)
90 #define  MCONTEXT_UESP_OFFSET      (MCONTEXT_GREGS_OFFSET + 17*4)
91 #define  MCONTEXT_SS_OFFSET        (MCONTEXT_GREGS_OFFSET + 18*4)
92 
93 #define  UCONTEXT_SIGMASK_OFFSET   108
94 
95 #define  UCONTEXT_FPREGS_OFFSET       96
96 #define  UCONTEXT_FPREGS_MEM_OFFSET   116
97 
98 #elif defined(__mips__)
99 
100 #if _MIPS_SIM == _ABIO32
101 #define  MCONTEXT_PC_OFFSET        32
102 #define  MCONTEXT_GREGS_OFFSET     40
103 #define  MCONTEXT_FPREGS_OFFSET    296
104 #define  MCONTEXT_FPC_CSR          556
105 #define  UCONTEXT_SIGMASK_OFFSET   616
106 #else
107 #define  MCONTEXT_GREGS_OFFSET     40
108 #define  MCONTEXT_FPREGS_OFFSET    296
109 #define  MCONTEXT_PC_OFFSET        616
110 #define  MCONTEXT_FPC_CSR          624
111 #define  UCONTEXT_SIGMASK_OFFSET   640
112 #endif
113 
114 #elif defined(__x86_64__)
115 
116 #define MCONTEXT_GREGS_OFFSET     40
117 #define UCONTEXT_SIGMASK_OFFSET   296
118 
119 #define MCONTEXT_GREGS_R8    40
120 #define MCONTEXT_GREGS_R9    48
121 #define MCONTEXT_GREGS_R10   56
122 #define MCONTEXT_GREGS_R11   64
123 #define MCONTEXT_GREGS_R12   72
124 #define MCONTEXT_GREGS_R13   80
125 #define MCONTEXT_GREGS_R14   88
126 #define MCONTEXT_GREGS_R15   96
127 #define MCONTEXT_GREGS_RDI   104
128 #define MCONTEXT_GREGS_RSI   112
129 #define MCONTEXT_GREGS_RBP   120
130 #define MCONTEXT_GREGS_RBX   128
131 #define MCONTEXT_GREGS_RDX   136
132 #define MCONTEXT_GREGS_RAX   144
133 #define MCONTEXT_GREGS_RCX   152
134 #define MCONTEXT_GREGS_RSP   160
135 #define MCONTEXT_GREGS_RIP   168
136 #define MCONTEXT_FPREGS_PTR  224
137 #define MCONTEXT_FPREGS_MEM  304
138 #define FPREGS_OFFSET_MXCSR  24
139 
140 #else
141 #error "This header has not been ported for your CPU"
142 #endif
143 
144 #endif  // GOOGLEBREAKPAD_COMMON_ANDROID_UCONTEXT_CONSTANTS_H
145