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
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
|
/*
* Mesa 3-D graphics library
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
* Copyright (C) 2009 VMware, Inc. All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \file compiler.h
* Compiler-related stuff.
*/
#ifndef COMPILER_H
#define COMPILER_H
#include <assert.h>
#include <ctype.h>
#include <math.h>
#include <limits.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <float.h>
#include <stdarg.h>
#include "util/macros.h"
#include "c99_compat.h" /* inline, __func__, etc. */
#ifdef __cplusplus
extern "C" {
#endif
/**
* Get standard integer types
*/
#include <stdint.h>
/**
* Sun compilers define __i386 instead of the gcc-style __i386__
*/
#ifdef __SUNPRO_C
# if !defined(__i386__) && defined(__i386)
# define __i386__
# elif !defined(__amd64__) && defined(__amd64)
# define __amd64__
# elif !defined(__sparc__) && defined(__sparc)
# define __sparc__
# endif
# if !defined(__volatile)
# define __volatile volatile
# endif
#endif
/**
* finite macro.
*/
#if defined(_MSC_VER)
# define finite _finite
#endif
/**
* Disable assorted warnings
*/
#if defined(_WIN32) && !defined(__CYGWIN__)
# if !defined(__GNUC__) /* mingw environment */
# pragma warning( disable : 4068 ) /* unknown pragma */
# pragma warning( disable : 4710 ) /* function 'foo' not inlined */
# pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
# pragma warning( disable : 4127 ) /* conditional expression is constant */
# if defined(MESA_MINWARN)
# pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
# pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
# pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
# pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
# pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
# endif
# endif
#endif
/* XXX: Use standard `inline` keyword instead */
#ifndef INLINE
# define INLINE inline
#endif
/**
* PUBLIC/USED macros
*
* If we build the library with gcc's -fvisibility=hidden flag, we'll
* use the PUBLIC macro to mark functions that are to be exported.
*
* We also need to define a USED attribute, so the optimizer doesn't
* inline a static function that we later use in an alias. - ajax
*/
#ifndef PUBLIC
# if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
# define PUBLIC __attribute__((visibility("default")))
# define USED __attribute__((used))
# else
# define PUBLIC
# define USED
# endif
#endif
/* XXX: Use standard `__func__` instead */
#ifndef __FUNCTION__
# define __FUNCTION__ __func__
#endif
/**
* Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN, and CPU_TO_LE32.
* Do not use these unless absolutely necessary!
* Try to use a runtime test instead.
* For now, only used by some DRI hardware drivers for color/texel packing.
*/
#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
#if defined(__linux__)
#include <byteswap.h>
#define CPU_TO_LE32( x ) bswap_32( x )
#elif defined(__APPLE__)
#include <CoreFoundation/CFByteOrder.h>
#define CPU_TO_LE32( x ) CFSwapInt32HostToLittle( x )
#elif (defined(_AIX))
static inline GLuint CPU_TO_LE32(GLuint x)
{
return (((x & 0x000000ff) << 24) |
((x & 0x0000ff00) << 8) |
((x & 0x00ff0000) >> 8) |
((x & 0xff000000) >> 24));
}
#elif defined(__OpenBSD__)
#include <sys/types.h>
#define CPU_TO_LE32( x ) htole32( x )
#else /*__linux__ */
#include <sys/endian.h>
#define CPU_TO_LE32( x ) bswap32( x )
#endif /*__linux__*/
#define MESA_BIG_ENDIAN 1
#else
#define CPU_TO_LE32( x ) ( x )
#define MESA_LITTLE_ENDIAN 1
#endif
#define LE32_TO_CPU( x ) CPU_TO_LE32( x )
/**
* Create a macro so that asm functions can be linked into compilers other
* than GNU C
*/
#ifndef _ASMAPI
#if defined(_WIN32)
#define _ASMAPI __cdecl
#else
#define _ASMAPI
#endif
#ifdef PTR_DECL_IN_FRONT
#define _ASMAPIP * _ASMAPI
#else
#define _ASMAPIP _ASMAPI *
#endif
#endif
#ifdef USE_X86_ASM
#define _NORMAPI _ASMAPI
#define _NORMAPIP _ASMAPIP
#else
#define _NORMAPI
#define _NORMAPIP *
#endif
/* Turn off macro checking systems used by other libraries */
#ifdef CHECK
#undef CHECK
#endif
/**
* ASSERT macro
*/
#if defined(DEBUG)
# define ASSERT(X) assert(X)
#else
# define ASSERT(X)
#endif
/*
* A trick to suppress uninitialized variable warning without generating any
* code
*/
#define uninitialized_var(x) x = x
#ifndef NULL
#define NULL 0
#endif
/**
* LONGSTRING macro
* gcc -pedantic warns about long string literals, LONGSTRING silences that.
*/
#if !defined(__GNUC__)
# define LONGSTRING
#else
# define LONGSTRING __extension__
#endif
#ifndef M_PI
#define M_PI (3.14159265358979323846)
#endif
#ifndef M_E
#define M_E (2.7182818284590452354)
#endif
#ifndef M_LOG2E
#define M_LOG2E (1.4426950408889634074)
#endif
#ifndef ONE_DIV_SQRT_LN2
#define ONE_DIV_SQRT_LN2 (1.201122408786449815)
#endif
#ifndef FLT_MAX_EXP
#define FLT_MAX_EXP 128
#endif
#define IEEE_ONE 0x3f800000
/**
* START/END_FAST_MATH macros:
*
* START_FAST_MATH: Set x86 FPU to faster, 32-bit precision mode (and save
* original mode to a temporary).
* END_FAST_MATH: Restore x86 FPU to original mode.
*/
#if defined(__GNUC__) && defined(__i386__)
/*
* Set the x86 FPU control word to guarentee only 32 bits of precision
* are stored in registers. Allowing the FPU to store more introduces
* differences between situations where numbers are pulled out of memory
* vs. situations where the compiler is able to optimize register usage.
*
* In the worst case, we force the compiler to use a memory access to
* truncate the float, by specifying the 'volatile' keyword.
*/
/* Hardware default: All exceptions masked, extended double precision,
* round to nearest (IEEE compliant):
*/
#define DEFAULT_X86_FPU 0x037f
/* All exceptions masked, single precision, round to nearest:
*/
#define FAST_X86_FPU 0x003f
/* The fldcw instruction will cause any pending FP exceptions to be
* raised prior to entering the block, and we clear any pending
* exceptions before exiting the block. Hence, asm code has free
* reign over the FPU while in the fast math block.
*/
#if defined(NO_FAST_MATH)
#define START_FAST_MATH(x) \
do { \
static GLuint mask = DEFAULT_X86_FPU; \
__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
__asm__ ( "fldcw %0" : : "m" (mask) ); \
} while (0)
#else
#define START_FAST_MATH(x) \
do { \
static GLuint mask = FAST_X86_FPU; \
__asm__ ( "fnstcw %0" : "=m" (*&(x)) ); \
__asm__ ( "fldcw %0" : : "m" (mask) ); \
} while (0)
#endif
/* Restore original FPU mode, and clear any exceptions that may have
* occurred in the FAST_MATH block.
*/
#define END_FAST_MATH(x) \
do { \
__asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) ); \
} while (0)
#elif defined(_MSC_VER) && defined(_M_IX86)
#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
#define FAST_X86_FPU 0x003f /* See GCC comments above */
#if defined(NO_FAST_MATH)
#define START_FAST_MATH(x) do {\
static GLuint mask = DEFAULT_X86_FPU;\
__asm fnstcw word ptr [x]\
__asm fldcw word ptr [mask]\
} while(0)
#else
#define START_FAST_MATH(x) do {\
static GLuint mask = FAST_X86_FPU;\
__asm fnstcw word ptr [x]\
__asm fldcw word ptr [mask]\
} while(0)
#endif
#define END_FAST_MATH(x) do {\
__asm fnclex\
__asm fldcw word ptr [x]\
} while(0)
#else
#define START_FAST_MATH(x) x = 0
#define END_FAST_MATH(x) (void)(x)
#endif
#ifndef Elements
#define Elements(x) (sizeof(x)/sizeof(*(x)))
#endif
#ifdef __cplusplus
}
#endif
#endif /* COMPILER_H */
|