1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//
// Defines macros used within libunwind project.
//
//===----------------------------------------------------------------------===//
#ifndef LIBUNWIND_CONFIG_H
#define LIBUNWIND_CONFIG_H
#include <assert.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <__libunwind_config.h>
// Platform specific configuration defines.
#ifdef __APPLE__
#if defined(FOR_DYLD)
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
#else
#define _LIBUNWIND_SUPPORT_COMPACT_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#endif
#elif defined(_WIN32)
#ifdef __SEH__
#define _LIBUNWIND_SUPPORT_SEH_UNWIND 1
#else
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#endif
#elif defined(_LIBUNWIND_IS_BAREMETAL)
#if !defined(_LIBUNWIND_ARM_EHABI)
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 1
#endif
#elif defined(__BIONIC__) && defined(_LIBUNWIND_ARM_EHABI)
// For ARM EHABI, Bionic didn't implement dl_iterate_phdr until API 21. After
// API 21, dl_iterate_phdr exists, but dl_unwind_find_exidx is much faster.
#define _LIBUNWIND_USE_DL_UNWIND_FIND_EXIDX 1
#else
// Assume an ELF system with a dl_iterate_phdr function.
#define _LIBUNWIND_USE_DL_ITERATE_PHDR 1
#if !defined(_LIBUNWIND_ARM_EHABI)
#define _LIBUNWIND_SUPPORT_DWARF_UNWIND 1
#define _LIBUNWIND_SUPPORT_DWARF_INDEX 1
#endif
#endif
#if defined(_LIBUNWIND_HIDE_SYMBOLS)
// The CMake file passes -fvisibility=hidden to control ELF/Mach-O visibility.
#define _LIBUNWIND_EXPORT
#define _LIBUNWIND_HIDDEN
#else
#if !defined(__ELF__) && !defined(__MACH__)
#define _LIBUNWIND_EXPORT __declspec(dllexport)
#define _LIBUNWIND_HIDDEN
#else
#define _LIBUNWIND_EXPORT __attribute__((visibility("default")))
#define _LIBUNWIND_HIDDEN __attribute__((visibility("hidden")))
#endif
#endif
#define STR(a) #a
#define XSTR(a) STR(a)
#define SYMBOL_NAME(name) XSTR(__USER_LABEL_PREFIX__) #name
#if defined(__APPLE__)
#if defined(_LIBUNWIND_HIDE_SYMBOLS)
#define _LIBUNWIND_ALIAS_VISIBILITY(name) __asm__(".private_extern " name);
#else
#define _LIBUNWIND_ALIAS_VISIBILITY(name)
#endif
#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \
__asm__(".globl " SYMBOL_NAME(aliasname)); \
__asm__(SYMBOL_NAME(aliasname) " = " SYMBOL_NAME(name)); \
_LIBUNWIND_ALIAS_VISIBILITY(SYMBOL_NAME(aliasname))
#elif defined(__ELF__)
#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \
extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \
__attribute__((weak, alias(#name)));
#elif defined(_WIN32)
#if defined(__MINGW32__)
#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \
extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname \
__attribute__((alias(#name)));
#else
#define _LIBUNWIND_WEAK_ALIAS(name, aliasname) \
__pragma(comment(linker, "/alternatename:" SYMBOL_NAME(aliasname) "=" \
SYMBOL_NAME(name))) \
extern "C" _LIBUNWIND_EXPORT __typeof(name) aliasname;
#endif
#else
#error Unsupported target
#endif
// Apple/armv7k defaults to DWARF/Compact unwinding, but its libunwind also
// needs to include the SJLJ APIs.
#if (defined(__APPLE__) && defined(__arm__)) || defined(__USING_SJLJ_EXCEPTIONS__)
#define _LIBUNWIND_BUILD_SJLJ_APIS
#endif
#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__)
#define _LIBUNWIND_SUPPORT_FRAME_APIS
#endif
#if defined(__i386__) || defined(__x86_64__) || defined(__powerpc__) || \
(!defined(__APPLE__) && defined(__arm__)) || defined(__aarch64__) || \
defined(__mips__) || defined(__riscv) || defined(__hexagon__) || \
defined(__sparc__)
#if !defined(_LIBUNWIND_BUILD_SJLJ_APIS)
#define _LIBUNWIND_BUILD_ZERO_COST_APIS
#endif
#endif
#ifndef _LIBUNWIND_REMEMBER_HEAP_ALLOC
#if defined(_LIBUNWIND_REMEMBER_STACK_ALLOC) || defined(__APPLE__) || \
defined(__linux__) || defined(__ANDROID__) || defined(__MINGW32__) || \
defined(_LIBUNWIND_IS_BAREMETAL)
#define _LIBUNWIND_REMEMBER_ALLOC(_size) alloca(_size)
#define _LIBUNWIND_REMEMBER_FREE(_ptr) \
do { \
} while (0)
#elif defined(_WIN32)
#define _LIBUNWIND_REMEMBER_ALLOC(_size) _malloca(_size)
#define _LIBUNWIND_REMEMBER_FREE(_ptr) _freea(_ptr)
#define _LIBUNWIND_REMEMBER_CLEANUP_NEEDED
#else
#define _LIBUNWIND_REMEMBER_ALLOC(_size) malloc(_size)
#define _LIBUNWIND_REMEMBER_FREE(_ptr) free(_ptr)
#define _LIBUNWIND_REMEMBER_CLEANUP_NEEDED
#endif
#else /* _LIBUNWIND_REMEMBER_HEAP_ALLOC */
#define _LIBUNWIND_REMEMBER_ALLOC(_size) malloc(_size)
#define _LIBUNWIND_REMEMBER_FREE(_ptr) free(_ptr)
#define _LIBUNWIND_REMEMBER_CLEANUP_NEEDED
#endif
#if defined(NDEBUG) && defined(_LIBUNWIND_IS_BAREMETAL)
#define _LIBUNWIND_ABORT(msg) \
do { \
abort(); \
} while (0)
#else
#define _LIBUNWIND_ABORT(msg) \
do { \
fprintf(stderr, "libunwind: %s - %s\n", __func__, msg); \
fflush(stderr); \
abort(); \
} while (0)
#endif
#if defined(NDEBUG) && defined(_LIBUNWIND_IS_BAREMETAL)
#define _LIBUNWIND_LOG0(msg)
#define _LIBUNWIND_LOG(msg, ...)
#else
#define _LIBUNWIND_LOG0(msg) \
fprintf(stderr, "libunwind: " msg "\n")
#define _LIBUNWIND_LOG(msg, ...) \
fprintf(stderr, "libunwind: " msg "\n", __VA_ARGS__)
#endif
#if defined(NDEBUG)
#define _LIBUNWIND_LOG_IF_FALSE(x) x
#else
#define _LIBUNWIND_LOG_IF_FALSE(x) \
do { \
bool _ret = x; \
if (!_ret) \
_LIBUNWIND_LOG("" #x " failed in %s", __FUNCTION__); \
} while (0)
#endif
// Macros that define away in non-Debug builds
#ifdef NDEBUG
#define _LIBUNWIND_DEBUG_LOG(msg, ...)
#define _LIBUNWIND_TRACE_API(msg, ...)
#define _LIBUNWIND_TRACING_UNWINDING (0)
#define _LIBUNWIND_TRACING_DWARF (0)
#define _LIBUNWIND_TRACE_UNWINDING(msg, ...)
#define _LIBUNWIND_TRACE_DWARF(...)
#else
#ifdef __cplusplus
extern "C" {
#endif
extern bool logAPIs();
extern bool logUnwinding();
extern bool logDWARF();
#ifdef __cplusplus
}
#endif
#define _LIBUNWIND_DEBUG_LOG(msg, ...) _LIBUNWIND_LOG(msg, __VA_ARGS__)
#define _LIBUNWIND_TRACE_API(msg, ...) \
do { \
if (logAPIs()) \
_LIBUNWIND_LOG(msg, __VA_ARGS__); \
} while (0)
#define _LIBUNWIND_TRACING_UNWINDING logUnwinding()
#define _LIBUNWIND_TRACING_DWARF logDWARF()
#define _LIBUNWIND_TRACE_UNWINDING(msg, ...) \
do { \
if (logUnwinding()) \
_LIBUNWIND_LOG(msg, __VA_ARGS__); \
} while (0)
#define _LIBUNWIND_TRACE_DWARF(...) \
do { \
if (logDWARF()) \
fprintf(stderr, __VA_ARGS__); \
} while (0)
#endif
#ifdef __cplusplus
// Used to fit UnwindCursor and Registers_xxx types against unw_context_t /
// unw_cursor_t sized memory blocks.
#if defined(_LIBUNWIND_IS_NATIVE_ONLY)
# define COMP_OP ==
#else
# define COMP_OP <=
#endif
template <typename _Type, typename _Mem>
struct check_fit {
template <typename T>
struct blk_count {
static const size_t count =
(sizeof(T) + sizeof(uint64_t) - 1) / sizeof(uint64_t);
};
static const bool does_fit =
(blk_count<_Type>::count COMP_OP blk_count<_Mem>::count);
};
#undef COMP_OP
#endif // __cplusplus
#endif // LIBUNWIND_CONFIG_H
|
