blob: c75676d547ade93fd0eb9989626a1942634187d6 (
plain)
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
|
/*
* Copyright 2015 WebAssembly Community Group participants
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef wasm_compiler_support_h
#define wasm_compiler_support_h
#ifndef __has_feature
#define __has_feature(x) 0
#endif
#ifndef __has_builtin
#define __has_builtin(x) 0
#endif
// If control flow reaches the point of the WASM_UNREACHABLE(), the program is
// undefined.
#if __has_builtin(__builtin_unreachable) && defined(NDEBUG)
#define WASM_UNREACHABLE() __builtin_unreachable()
#elif defined(_MSC_VER)
#define WASM_UNREACHABLE() __assume(false)
#elif __has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
#include "sanitizer/common_interface_defs.h"
#define WASM_UNREACHABLE() \
do { \
__sanitizer_print_stack_trace(); \
__builtin_trap(); \
} while (0)
#else
#include <assert.h>
#include <stdlib.h>
#define WASM_UNREACHABLE() \
do { \
assert(false); \
abort(); \
} while (0)
#endif
#ifdef __GNUC__
#define WASM_NORETURN __attribute__((noreturn))
#elif defined(_MSC_VER)
#define WASM_NORETURN __declspec(noreturn)
#else
#define WASM_NORETURN
#endif
// The code might contain TODOs or stubs that read some values but do nothing
// with them. The compiler might fail with [-Werror,-Wunused-variable].
// The WASM_UNUSED(varible) is a wrapper that helps to suppress the error.
#define WASM_UNUSED(expr) \
do { \
if (sizeof expr) { \
(void)0; \
} \
} while (0)
#endif // wasm_compiler_support_h
|
