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
239
240
241
242
243
244
|
/*
* Copyright 2016 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_CONFIG_H_
#define WASM_CONFIG_H_
/* TODO(binji): nice way to define these with WASM_ prefix? */
/* Whether <alloca.h> is available */
#cmakedefine01 HAVE_ALLOCA_H
/* Whether <unistd.h> is available */
#cmakedefine01 HAVE_UNISTD_H
/* Whether snprintf is defined by stdio.h */
#cmakedefine01 HAVE_SNPRINTF
/* Whether sysconf is defined by unistd.h */
#cmakedefine01 HAVE_SYSCONF
/* Whether ssize_t is defined by stddef.h */
#cmakedefine01 HAVE_SSIZE_T
/* Whether strcasecmp is defined by strings.h */
#cmakedefine01 HAVE_STRCASECMP
#cmakedefine01 COMPILER_IS_CLANG
#cmakedefine01 COMPILER_IS_GNU
#cmakedefine01 COMPILER_IS_MSVC
#define SIZEOF_SIZE_T @SIZEOF_SIZE_T@
#define SIZEOF_INT @SIZEOF_INT@
#define SIZEOF_LONG @SIZEOF_LONG@
#define SIZEOF_LONG_LONG @SIZEOF_LONG_LONG@
#if HAVE_ALLOCA_H
#include <alloca.h>
#elif COMPILER_IS_MSVC
#include <malloc.h>
#define alloca _alloca
#elif __MINGW32__
#include <malloc.h>
#else
#error no alloca
#endif
#if COMPILER_IS_CLANG || COMPILER_IS_GNU
#define WASM_UNUSED __attribute__ ((unused))
#define WASM_WARN_UNUSED __attribute__ ((warn_unused_result))
#define WASM_INLINE inline
#define WASM_STATIC_ASSERT(x) _Static_assert((x), #x)
#define WASM_UNLIKELY(x) __builtin_expect(!!(x), 0)
#define WASM_LIKELY(x) __builtin_expect(!!(x), 1)
#define WASM_PRINTF_FORMAT(format_arg, first_arg) \
__attribute__((format(printf, (format_arg), (first_arg))))
#if SIZEOF_INT == 4
#define wasm_clz_u32(x) __builtin_clz(x)
#define wasm_ctz_u32(x) __builtin_ctz(x)
#define wasm_popcount_u32(x) __builtin_popcount(x)
#elif SIZEOF_LONG == 4
#define wasm_clz_u32(x) __builtin_clzl(x)
#define wasm_ctz_u32(x) __builtin_ctzl(x)
#define wasm_popcount_u32(x) __builtin_popcountl(x)
#else
#error "don't know how to define 32-bit builtins"
#endif
#if SIZEOF_LONG == 8
#define wasm_clz_u64(x) __builtin_clzl(x)
#define wasm_ctz_u64(x) __builtin_ctzl(x)
#define wasm_popcount_u64(x) __builtin_popcountl(x)
#elif SIZEOF_LONG_LONG == 8
#define wasm_clz_u64(x) __builtin_clzll(x)
#define wasm_ctz_u64(x) __builtin_ctzll(x)
#define wasm_popcount_u64(x) __builtin_popcountll(x)
#else
#error "don't know how to define 64-bit builtins"
#endif
#define WABT_UNREACHABLE __builtin_unreachable()
#elif COMPILER_IS_MSVC
#include <vcruntime_string.h>
#define WASM_UNUSED
#define WASM_WARN_UNUSED _Check_return_
#define WASM_INLINE __inline
#define WASM_STATIC_ASSERT(x) _STATIC_ASSERT(x)
#define WASM_UNLIKELY(x) (x)
#define WASM_LIKELY(x) (x)
#define WASM_PRINTF_FORMAT(format_arg, first_arg)
#define WABT_UNREACHABLE __assume(0)
__inline unsigned long wasm_clz_u32(unsigned long mask) {
unsigned long index;
_BitScanReverse(&index, mask);
return sizeof(unsigned long) * 8 - (index + 1);
}
__inline unsigned long wasm_clz_u64(unsigned __int64 mask) {
#if _M_X64
unsigned long index;
_BitScanReverse64(&index, mask);
return sizeof(unsigned __int64) * 8 - (index + 1);
#elif _M_IX86
unsigned long index;
unsigned long high_mask;
memcpy(&high_mask, (unsigned char*)&mask + sizeof(unsigned long),
sizeof(unsigned long));
if (_BitScanReverse(&index, high_mask)) {
return sizeof(unsigned long) * 8 - (index + 1);
}
unsigned long low_mask;
memcpy(&low_mask, &mask, sizeof(unsigned long));
_BitScanReverse(&index, low_mask);
return sizeof(unsigned __int64) * 8 - (index + 1);
#else
#error unexpected architecture
#endif
}
__inline unsigned long wasm_ctz_u32(unsigned long mask) {
unsigned long index;
_BitScanForward(&index, mask);
return index;
}
__inline unsigned long wasm_ctz_u64(unsigned __int64 mask) {
#if _M_X64
unsigned long index;
_BitScanForward64(&index, mask);
return index;
#elif _M_IX86
unsigned long low_mask = (unsigned long)mask;
if (low_mask) {
return wasm_ctz_u32(low_mask);
}
unsigned long high_mask;
memcpy(&high_mask, (unsigned char*)&mask + sizeof(unsigned long),
sizeof(unsigned long));
return sizeof(unsigned long) * 8 + wasm_ctz_u32(high_mask);
#else
#error unexpected architecture
#endif
}
#define wasm_popcount_u32 __popcnt
#if _M_X64
#elif _M_IX86
__inline unsigned __int64 __popcnt64(unsigned __int64 value) {
unsigned long high_value;
unsigned long low_value;
memcpy(&high_value, (unsigned char*)&value + sizeof(unsigned long),
sizeof(unsigned long));
memcpy(&low_value, &value, sizeof(unsigned long));
return wasm_popcount_u32(high_value) + wasm_popcount_u32(low_value);
}
#else
#error unexpected architecture
#endif
#define wasm_popcount_u64 __popcnt64
#else
#error unknown compiler
#endif
/* Check For MINGW first, because it is also a GNU compiler */
#if COMPILER_IS_MSVC || __MINGW32__
/* print format specifier for size_t */
#if SIZEOF_SIZE_T == 4
#define PRIzd "d"
#define PRIzx "x"
#elif SIZEOF_SIZE_T == 8
#define PRIzd "I64d"
#define PRIzx "I64x"
#else
#error "weird sizeof size_t"
#endif
#elif COMPILER_IS_CLANG || COMPILER_IS_GNU
/* print format specifier for size_t */
#define PRIzd "zd"
#define PRIzx "zx"
#else
#error unknown compiler
#endif
#if HAVE_SNPRINTF
#define wasm_snprintf snprintf
#elif COMPILER_IS_MSVC
/* can't just use _snprintf because it doesn't always null terminate */
#include <stdarg.h>
int wasm_snprintf(char* str, size_t size, const char* format, ...);
#else
#error no snprintf
#endif
#if COMPILER_IS_MSVC
/* can't just use vsnprintf because it doesn't always null terminate */
int wasm_vsnprintf(char* str, size_t size, const char* format, va_list ap);
#else
#define wasm_vsnprintf vsnprintf
#endif
#if !HAVE_SSIZE_T
typedef int ssize_t;
#endif
#if !HAVE_STRCASECMP
#if COMPILER_IS_MSVC
#define strcasecmp _stricmp
#else
#error no strcasecmp
#endif
#endif
#endif /* WASM_CONFIG_H_ */
|
