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-rw-r--r--libunwindstack/Ucontext.h184
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diff --git a/libunwindstack/Ucontext.h b/libunwindstack/Ucontext.h
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1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
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 copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
13 * distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#ifndef _LIBUNWINDSTACK_UCONTEXT_H
30#define _LIBUNWINDSTACK_UCONTEXT_H
31
32#include <stdint.h>
33
34namespace unwindstack {
35
36//-------------------------------------------------------------------
37// ARM ucontext structures
38//-------------------------------------------------------------------
39struct arm_stack_t {
40 uint32_t ss_sp; // void __user*
41 int32_t ss_flags; // int
42 uint32_t ss_size; // size_t
43};
44
45struct arm_mcontext_t {
46 uint32_t trap_no; // unsigned long
47 uint32_t error_code; // unsigned long
48 uint32_t oldmask; // unsigned long
49 uint32_t regs[ARM_REG_LAST]; // unsigned long
50 uint32_t cpsr; // unsigned long
51 uint32_t fault_address; // unsigned long
52};
53
54struct arm_ucontext_t {
55 uint32_t uc_flags; // unsigned long
56 uint32_t uc_link; // struct ucontext*
57 arm_stack_t uc_stack;
58 arm_mcontext_t uc_mcontext;
59 // Nothing else is used, so don't define it.
60};
61//-------------------------------------------------------------------
62
63//-------------------------------------------------------------------
64// ARM64 ucontext structures
65//-------------------------------------------------------------------
66struct arm64_stack_t {
67 uint64_t ss_sp; // void __user*
68 int32_t ss_flags; // int
69 uint64_t ss_size; // size_t
70};
71
72struct arm64_sigset_t {
73 uint64_t sig; // unsigned long
74};
75
76struct arm64_mcontext_t {
77 uint64_t fault_address; // __u64
78 uint64_t regs[ARM64_REG_LAST]; // __u64
79 uint64_t pstate; // __u64
80 // Nothing else is used, so don't define it.
81};
82
83struct arm64_ucontext_t {
84 uint64_t uc_flags; // unsigned long
85 uint64_t uc_link; // struct ucontext*
86 arm64_stack_t uc_stack;
87 arm64_sigset_t uc_sigmask;
88 // The kernel adds extra padding after uc_sigmask to match glibc sigset_t on ARM64.
89 char __padding[128 - sizeof(arm64_sigset_t)];
90 // The full structure requires 16 byte alignment, but our partial structure
91 // doesn't, so force the alignment.
92 arm64_mcontext_t uc_mcontext __attribute__((aligned(16)));
93};
94//-------------------------------------------------------------------
95
96//-------------------------------------------------------------------
97// X86 ucontext structures
98//-------------------------------------------------------------------
99struct x86_stack_t {
100 uint32_t ss_sp; // void __user*
101 int32_t ss_flags; // int
102 uint32_t ss_size; // size_t
103};
104
105struct x86_mcontext_t {
106 uint32_t gs;
107 uint32_t fs;
108 uint32_t es;
109 uint32_t ds;
110 uint32_t edi;
111 uint32_t esi;
112 uint32_t ebp;
113 uint32_t esp;
114 uint32_t ebx;
115 uint32_t edx;
116 uint32_t ecx;
117 uint32_t eax;
118 uint32_t trapno;
119 uint32_t err;
120 uint32_t eip;
121 uint32_t cs;
122 uint32_t efl;
123 uint32_t uesp;
124 uint32_t ss;
125 // Only care about the registers, skip everything else.
126};
127
128struct x86_ucontext_t {
129 uint32_t uc_flags; // unsigned long
130 uint32_t uc_link; // struct ucontext*
131 x86_stack_t uc_stack;
132 x86_mcontext_t uc_mcontext;
133 // Nothing else is used, so don't define it.
134};
135//-------------------------------------------------------------------
136
137//-------------------------------------------------------------------
138// X86_64 ucontext structures
139//-------------------------------------------------------------------
140struct x86_64_stack_t {
141 uint64_t ss_sp; // void __user*
142 int32_t ss_flags; // int
143 uint64_t ss_size; // size_t
144};
145
146struct x86_64_mcontext_t {
147 uint64_t r8;
148 uint64_t r9;
149 uint64_t r10;
150 uint64_t r11;
151 uint64_t r12;
152 uint64_t r13;
153 uint64_t r14;
154 uint64_t r15;
155 uint64_t rdi;
156 uint64_t rsi;
157 uint64_t rbp;
158 uint64_t rbx;
159 uint64_t rdx;
160 uint64_t rax;
161 uint64_t rcx;
162 uint64_t rsp;
163 uint64_t rip;
164 uint64_t efl;
165 uint64_t csgsfs;
166 uint64_t err;
167 uint64_t trapno;
168 uint64_t oldmask;
169 uint64_t cr2;
170 // Only care about the registers, skip everything else.
171};
172
173struct x86_64_ucontext_t {
174 uint64_t uc_flags; // unsigned long
175 uint64_t uc_link; // struct ucontext*
176 x86_64_stack_t uc_stack;
177 x86_64_mcontext_t uc_mcontext;
178 // Nothing else is used, so don't define it.
179};
180//-------------------------------------------------------------------
181
182} // namespace unwindstack
183
184#endif // _LIBUNWINDSTACK_UCONTEXT_H