/[pcre]/code/trunk/sljit/sljitConfigInternal.h
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Contents of /code/trunk/sljit/sljitConfigInternal.h

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1 /*
2 * Stack-less Just-In-Time compiler
3 *
4 * Copyright 2009-2012 Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without modification, are
7 * permitted provided that the following conditions are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice, this list of
10 * conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
13 * of conditions and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
19 * SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
21 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
22 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #ifndef _SLJIT_CONFIG_INTERNAL_H_
28 #define _SLJIT_CONFIG_INTERNAL_H_
29
30 /*
31 SLJIT defines the following macros depending on the target architecture:
32
33 Feature detection (boolean) macros:
34 SLJIT_32BIT_ARCHITECTURE : 32 bit architecture
35 SLJIT_64BIT_ARCHITECTURE : 64 bit architecture
36 SLJIT_WORD_SHIFT : the shift required to apply when accessing a sljit_w/sljit_uw array by index
37 SLJIT_FLOAT_SHIFT : the shift required to apply when accessing a double array by index
38 SLJIT_LITTLE_ENDIAN : little endian architecture
39 SLJIT_BIG_ENDIAN : big endian architecture
40 SLJIT_UNALIGNED : allows unaligned memory accesses for non-fpu operations (only!)
41 SLJIT_INDIRECT_CALL : see SLJIT_FUNC_OFFSET() for more information
42
43 Types and useful macros:
44 sljit_b, sljit_ub : signed and unsigned 8 bit byte
45 sljit_h, sljit_uh : signed and unsigned 16 bit half-word (short) type
46 sljit_i, sljit_ui : signed and unsigned 32 bit integer type
47 sljit_w, sljit_uw : signed and unsigned machine word, enough to store a pointer (same as intptr_t)
48 SLJIT_CALL : C calling convention define for both calling JIT form C and C callbacks for JIT
49 SLJIT_W(number) : defining 64 bit constants on 64 bit architectures (compiler independent helper)
50 */
51
52 #if !((defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
53 || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
54 || (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
55 || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
56 || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
57 || (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
58 || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
59 || (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
60 || (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
61 || (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED))
62 #error "An architecture must be selected"
63 #endif
64
65 /* Sanity check. */
66 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
67 + (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
68 + (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
69 + (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
70 + (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
71 + (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
72 + (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
73 + (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
74 + (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
75 + (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) >= 2
76 #error "Multiple architectures are selected"
77 #endif
78
79 /* Auto select option (requires compiler support) */
80 #if (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO)
81
82 #ifndef _WIN32
83
84 #if defined(__i386__) || defined(__i386)
85 #define SLJIT_CONFIG_X86_32 1
86 #elif defined(__x86_64__)
87 #define SLJIT_CONFIG_X86_64 1
88 #elif defined(__arm__) || defined(__ARM__)
89 #ifdef __thumb2__
90 #define SLJIT_CONFIG_ARM_THUMB2 1
91 #elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
92 #define SLJIT_CONFIG_ARM_V7 1
93 #else
94 #define SLJIT_CONFIG_ARM_V5 1
95 #endif
96 #elif defined(__ppc64__) || defined(__powerpc64__)
97 #define SLJIT_CONFIG_PPC_64 1
98 #elif defined(__ppc__) || defined(__powerpc__)
99 #define SLJIT_CONFIG_PPC_32 1
100 #elif defined(__mips__)
101 #define SLJIT_CONFIG_MIPS_32 1
102 #else
103 /* Unsupported architecture */
104 #define SLJIT_CONFIG_UNSUPPORTED 1
105 #endif
106
107 #else /* !_WIN32 */
108
109 #if defined(_M_X64) || defined(__x86_64__)
110 #define SLJIT_CONFIG_X86_64 1
111 #elif defined(_ARM_)
112 #define SLJIT_CONFIG_ARM_V5 1
113 #else
114 #define SLJIT_CONFIG_X86_32 1
115 #endif
116
117 #endif /* !WIN32 */
118 #endif /* SLJIT_CONFIG_AUTO */
119
120 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
121 #undef SLJIT_EXECUTABLE_ALLOCATOR
122 #endif
123
124 #if !(defined SLJIT_STD_MACROS_DEFINED && SLJIT_STD_MACROS_DEFINED)
125
126 /* These libraries are needed for the macros below. */
127 #include <stdlib.h>
128 #include <string.h>
129
130 #endif /* STD_MACROS_DEFINED */
131
132 /* General macros:
133 Note: SLJIT is designed to be independent from them as possible.
134
135 In release mode (SLJIT_DEBUG is not defined) only the following macros are needed:
136 */
137
138 #ifndef SLJIT_MALLOC
139 #define SLJIT_MALLOC(size) malloc(size)
140 #endif
141
142 #ifndef SLJIT_FREE
143 #define SLJIT_FREE(ptr) free(ptr)
144 #endif
145
146 #ifndef SLJIT_MEMMOVE
147 #define SLJIT_MEMMOVE(dest, src, len) memmove(dest, src, len)
148 #endif
149
150 #ifndef SLJIT_ZEROMEM
151 #define SLJIT_ZEROMEM(dest, len) memset(dest, 0, len)
152 #endif
153
154 #if !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY)
155
156 #if defined(__GNUC__) && (__GNUC__ >= 3)
157 #define SLJIT_LIKELY(x) __builtin_expect((x), 1)
158 #define SLJIT_UNLIKELY(x) __builtin_expect((x), 0)
159 #else
160 #define SLJIT_LIKELY(x) (x)
161 #define SLJIT_UNLIKELY(x) (x)
162 #endif
163
164 #endif /* !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY) */
165
166 #ifndef SLJIT_INLINE
167 /* Inline functions. */
168 #define SLJIT_INLINE __inline
169 #endif
170
171 #ifndef SLJIT_CONST
172 /* Const variables. */
173 #define SLJIT_CONST const
174 #endif
175
176 #ifndef SLJIT_UNUSED_ARG
177 /* Unused arguments. */
178 #define SLJIT_UNUSED_ARG(arg) (void)arg
179 #endif
180
181 #if (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC)
182 /* Static ABI functions. For all-in-one programs. */
183
184 #if defined(__GNUC__)
185 /* Disable unused warnings in gcc. */
186 #define SLJIT_API_FUNC_ATTRIBUTE static __attribute__((unused))
187 #else
188 #define SLJIT_API_FUNC_ATTRIBUTE static
189 #endif
190
191 #else
192 #define SLJIT_API_FUNC_ATTRIBUTE
193 #endif /* (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC) */
194
195 #ifndef SLJIT_CACHE_FLUSH
196
197 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
198
199 /* Not required to implement on archs with unified caches. */
200 #define SLJIT_CACHE_FLUSH(from, to)
201
202 #elif defined __APPLE__
203
204 /* Supported by all macs since Mac OS 10.5.
205 However, it does not work on non-jailbroken iOS devices,
206 although the compilation is successful. */
207
208 #define SLJIT_CACHE_FLUSH(from, to) \
209 sys_icache_invalidate((char*)(from), (char*)(to) - (char*)(from))
210
211 #elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
212
213 /* The __clear_cache() implementation of GCC is a dummy function on PowerPC. */
214 #define SLJIT_CACHE_FLUSH(from, to) \
215 ppc_cache_flush((from), (to))
216
217 #else
218
219 /* Calls __ARM_NR_cacheflush on ARM-Linux. */
220 #define SLJIT_CACHE_FLUSH(from, to) \
221 __clear_cache((char*)(from), (char*)(to))
222
223 #endif
224
225 #endif /* !SLJIT_CACHE_FLUSH */
226
227 /* 8 bit byte type. */
228 typedef unsigned char sljit_ub;
229 typedef signed char sljit_b;
230
231 /* 16 bit half-word type. */
232 typedef unsigned short int sljit_uh;
233 typedef signed short int sljit_h;
234
235 /* 32 bit integer type. */
236 typedef unsigned int sljit_ui;
237 typedef signed int sljit_i;
238
239 /* Machine word type. Can encapsulate a pointer.
240 32 bit for 32 bit machines.
241 64 bit for 64 bit machines. */
242 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
243 /* Just to have something. */
244 #define SLJIT_WORD_SHIFT 0
245 typedef unsigned long int sljit_uw;
246 typedef long int sljit_w;
247 #elif !(defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) && !(defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
248 #define SLJIT_32BIT_ARCHITECTURE 1
249 #define SLJIT_WORD_SHIFT 2
250 typedef unsigned int sljit_uw;
251 typedef int sljit_w;
252 #else
253 #define SLJIT_64BIT_ARCHITECTURE 1
254 #define SLJIT_WORD_SHIFT 3
255 #ifdef _WIN32
256 typedef unsigned __int64 sljit_uw;
257 typedef __int64 sljit_w;
258 #else
259 typedef unsigned long int sljit_uw;
260 typedef long int sljit_w;
261 #endif
262 #endif
263
264 /* Double precision. */
265 #define SLJIT_FLOAT_SHIFT 3
266
267 #ifndef SLJIT_W
268
269 /* Defining long constants. */
270 #if (defined SLJIT_64BIT_ARCHITECTURE && SLJIT_64BIT_ARCHITECTURE)
271 #define SLJIT_W(w) (w##ll)
272 #else
273 #define SLJIT_W(w) (w)
274 #endif
275
276 #endif /* !SLJIT_W */
277
278 #ifndef SLJIT_CALL
279
280 /* ABI (Application Binary Interface) types. */
281 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
282
283 #if defined(__GNUC__)
284
285 #define SLJIT_CALL __attribute__ ((fastcall))
286 #define SLJIT_X86_32_FASTCALL 1
287
288 #elif defined(_WIN32)
289
290 #ifdef __BORLANDC__
291 #define SLJIT_CALL __msfastcall
292 #else /* __BORLANDC__ */
293 #define SLJIT_CALL __fastcall
294 #endif /* __BORLANDC__ */
295 #define SLJIT_X86_32_FASTCALL 1
296
297 #else /* defined(_WIN32) */
298 #define SLJIT_CALL __stdcall
299 #endif
300
301 #else /* Other architectures. */
302
303 #define SLJIT_CALL
304
305 #endif /* SLJIT_CONFIG_X86_32 */
306
307 #endif /* !SLJIT_CALL */
308
309 #if !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN)
310
311 /* These macros are useful for the application. */
312 #if (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
313 #define SLJIT_BIG_ENDIAN 1
314
315 #elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
316
317 #ifdef __MIPSEL__
318 #define SLJIT_LITTLE_ENDIAN 1
319 #else
320 #define SLJIT_BIG_ENDIAN 1
321 #endif
322
323 #else
324 #define SLJIT_LITTLE_ENDIAN 1
325 #endif
326
327 #endif /* !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN) */
328
329 /* Sanity check. */
330 #if (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && (defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
331 #error "Exactly one endianness must be selected"
332 #endif
333
334 #if !(defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && !(defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
335 #error "Exactly one endianness must be selected"
336 #endif
337
338 #if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
339 /* It seems ppc64 compilers use an indirect addressing for functions.
340 It makes things really complicated. */
341 #define SLJIT_INDIRECT_CALL 1
342 #endif
343
344 #ifndef SLJIT_SSE2
345
346 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
347 /* Turn on SSE2 support on x86. */
348 #define SLJIT_SSE2 1
349
350 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
351 /* Auto detect SSE2 support using CPUID.
352 On 64 bit x86 cpus, sse2 must be present. */
353 #define SLJIT_DETECT_SSE2 1
354 #endif
355
356 #endif /* (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) */
357
358 #endif /* !SLJIT_SSE2 */
359
360 #ifndef SLJIT_UNALIGNED
361
362 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
363 || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
364 || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
365 || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
366 || (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
367 || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
368 #define SLJIT_UNALIGNED 1
369 #endif
370
371 #endif /* !SLJIT_UNALIGNED */
372
373 #if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
374 SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size);
375 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr);
376 #define SLJIT_MALLOC_EXEC(size) sljit_malloc_exec(size)
377 #define SLJIT_FREE_EXEC(ptr) sljit_free_exec(ptr)
378 #endif
379
380 #if (defined SLJIT_DEBUG && SLJIT_DEBUG) || (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
381 #include <stdio.h>
382 #endif
383
384 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
385
386 /* Feel free to redefine these two macros. */
387 #ifndef SLJIT_ASSERT
388
389 #define SLJIT_HALT_PROCESS() \
390 *((int*)0) = 0
391
392 #define SLJIT_ASSERT(x) \
393 do { \
394 if (SLJIT_UNLIKELY(!(x))) { \
395 printf("Assertion failed at " __FILE__ ":%d\n", __LINE__); \
396 SLJIT_HALT_PROCESS(); \
397 } \
398 } while (0)
399
400 #endif /* !SLJIT_ASSERT */
401
402 #ifndef SLJIT_ASSERT_STOP
403
404 #define SLJIT_ASSERT_STOP() \
405 do { \
406 printf("Should never been reached " __FILE__ ":%d\n", __LINE__); \
407 SLJIT_HALT_PROCESS(); \
408 } while (0)
409
410 #endif /* !SLJIT_ASSERT_STOP */
411
412 #else /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
413
414 #undef SLJIT_ASSERT
415 #undef SLJIT_ASSERT_STOP
416
417 #define SLJIT_ASSERT(x) \
418 do { } while (0)
419 #define SLJIT_ASSERT_STOP() \
420 do { } while (0)
421
422 #endif /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
423
424 #ifndef SLJIT_COMPILE_ASSERT
425
426 /* Should be improved eventually. */
427 #define SLJIT_COMPILE_ASSERT(x, description) \
428 SLJIT_ASSERT(x)
429
430 #endif /* !SLJIT_COMPILE_ASSERT */
431
432 #endif

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