sljit/sljitConfigInternal.h

   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 architecture dependent types and macros:
  32
  33    Types:
  34      sljit_s8, sljit_u8   : signed and unsigned 8 bit integer type
  35      sljit_s16, sljit_u16 : signed and unsigned 16 bit integer type
  36      sljit_s32, sljit_u32 : signed and unsigned 32 bit integer type
  37      sljit_sw, sljit_uw   : signed and unsigned machine word, enough to store a pointer
  38      sljit_p              : unsgined pointer value (usually the same as sljit_uw, but
  39                             some 64 bit ABIs may use 32 bit pointers)
  40      sljit_f32            : 32 bit single precision floating point value
  41      sljit_f64            : 64 bit double precision floating point value
  42
  43    Macros for feature detection (boolean):
  44      SLJIT_32BIT_ARCHITECTURE : 32 bit architecture
  45      SLJIT_64BIT_ARCHITECTURE : 64 bit architecture
  46      SLJIT_LITTLE_ENDIAN : little endian architecture
  47      SLJIT_BIG_ENDIAN : big endian architecture
  48      SLJIT_UNALIGNED : allows unaligned memory accesses for non-fpu operations (only!)
  49      SLJIT_INDIRECT_CALL : see SLJIT_FUNC_OFFSET() for more information
  50
  51    Constants:
  52      SLJIT_NUMBER_OF_REGISTERS : number of available registers
  53      SLJIT_NUMBER_OF_SCRATCH_REGISTERS : number of available scratch registers
  54      SLJIT_NUMBER_OF_SAVED_REGISTERS : number of available saved registers
  55      SLJIT_NUMBER_OF_FLOAT_REGISTERS : number of available floating point registers
  56      SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS : number of available floating point scratch registers
  57      SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS : number of available floating point saved registers
  58      SLJIT_WORD_SHIFT : the shift required to apply when accessing a sljit_sw/sljit_uw array by index
  59      SLJIT_F32_SHIFT : the shift required to apply when accessing
  60                        a single precision floating point array by index
  61      SLJIT_F64_SHIFT : the shift required to apply when accessing
  62                        a double precision floating point array by index
  63      SLJIT_LOCALS_OFFSET : local space starting offset (SLJIT_SP + SLJIT_LOCALS_OFFSET)
  64      SLJIT_RETURN_ADDRESS_OFFSET : a return instruction always adds this offset to the return address
  65
  66    Other macros:
  67      SLJIT_CALL : C calling convention define for both calling JIT form C and C callbacks for JIT
  68      SLJIT_W(number) : defining 64 bit constants on 64 bit architectures (compiler independent helper)
  69 */
  70
  71 /*****************/
  72 /* Sanity check. */
  73 /*****************/
  74
  75 #if !((defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
  76         || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
  77         || (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
  78         || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
  79         || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
  80         || (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
  81         || (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
  82         || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
  83         || (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
  84         || (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
  85         || (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
  86         || (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX) \
  87         || (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
  88         || (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED))
  89 #error "An architecture must be selected"
  90 #endif
  91
  92 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
  93         + (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
  94         + (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
  95         + (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
  96         + (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
  97         + (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
  98         + (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
  99         + (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
 100         + (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX) \
 101         + (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
 102         + (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
 103         + (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
 104         + (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
 105         + (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) >= 2
 106 #error "Multiple architectures are selected"
 107 #endif
 108
 109 /********************************************************/
 110 /* Automatic CPU detection (requires compiler support). */
 111 /********************************************************/
 112
 113 #if (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO)
 114
 115 #ifndef _WIN32
 116
 117 #if defined(__i386__) || defined(__i386)
 118 #define SLJIT_CONFIG_X86_32 1
 119 #elif defined(__x86_64__)
 120 #define SLJIT_CONFIG_X86_64 1
 121 #elif defined(__arm__) || defined(__ARM__)
 122 #ifdef __thumb2__
 123 #define SLJIT_CONFIG_ARM_THUMB2 1
 124 #elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
 125 #define SLJIT_CONFIG_ARM_V7 1
 126 #else
 127 #define SLJIT_CONFIG_ARM_V5 1
 128 #endif
 129 #elif defined (__aarch64__)
 130 #define SLJIT_CONFIG_ARM_64 1
 131 #elif defined(__ppc64__) || defined(__powerpc64__) || defined(_ARCH_PPC64) || (defined(_POWER) && defined(__64BIT__))
 132 #define SLJIT_CONFIG_PPC_64 1
 133 #elif defined(__ppc__) || defined(__powerpc__) || defined(_ARCH_PPC) || defined(_ARCH_PWR) || defined(_ARCH_PWR2) || defined(_POWER)
 134 #define SLJIT_CONFIG_PPC_32 1
 135 #elif defined(__mips__) && !defined(_LP64)
 136 #define SLJIT_CONFIG_MIPS_32 1
 137 #elif defined(__mips64)
 138 #define SLJIT_CONFIG_MIPS_64 1
 139 #elif defined(__sparc__) || defined(__sparc)
 140 #define SLJIT_CONFIG_SPARC_32 1
 141 #elif defined(__tilegx__)
 142 #define SLJIT_CONFIG_TILEGX 1
 143 #else
 144 /* Unsupported architecture */
 145 #define SLJIT_CONFIG_UNSUPPORTED 1
 146 #endif
 147
 148 #else /* !_WIN32 */
 149
 150 #if defined(_M_X64) || defined(__x86_64__)
 151 #define SLJIT_CONFIG_X86_64 1
 152 #elif defined(_ARM_)
 153 #define SLJIT_CONFIG_ARM_V5 1
 154 #else
 155 #define SLJIT_CONFIG_X86_32 1
 156 #endif
 157
 158 #endif /* !WIN32 */
 159 #endif /* SLJIT_CONFIG_AUTO */
 160
 161 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 162 #undef SLJIT_EXECUTABLE_ALLOCATOR
 163 #endif
 164
 165 /******************************/
 166 /* CPU family type detection. */
 167 /******************************/
 168
 169 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
 170         || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2)
 171 #define SLJIT_CONFIG_ARM_32 1
 172 #endif
 173
 174 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
 175 #define SLJIT_CONFIG_X86 1
 176 #elif (defined SLJIT_CONFIG_ARM_32 && SLJIT_CONFIG_ARM_32) || (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64)
 177 #define SLJIT_CONFIG_ARM 1
 178 #elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
 179 #define SLJIT_CONFIG_PPC 1
 180 #elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) || (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 181 #define SLJIT_CONFIG_MIPS 1
 182 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) || (defined SLJIT_CONFIG_SPARC_64 && SLJIT_CONFIG_SPARC_64)
 183 #define SLJIT_CONFIG_SPARC 1
 184 #endif
 185
 186 /**********************************/
 187 /* External function definitions. */
 188 /**********************************/
 189
 190 #if !(defined SLJIT_STD_MACROS_DEFINED && SLJIT_STD_MACROS_DEFINED)
 191
 192 /* These libraries are needed for the macros below. */
 193 #include <stdlib.h>
 194 #include <string.h>
 195
 196 #endif /* SLJIT_STD_MACROS_DEFINED */
 197
 198 /* General macros:
 199    Note: SLJIT is designed to be independent from them as possible.
 200
 201    In release mode (SLJIT_DEBUG is not defined) only the following
 202    external functions are needed:
 203 */
 204
 205 #ifndef SLJIT_MALLOC
 206 #define SLJIT_MALLOC(size, allocator_data) malloc(size)
 207 #endif
 208
 209 #ifndef SLJIT_FREE
 210 #define SLJIT_FREE(ptr, allocator_data) free(ptr)
 211 #endif
 212
 213 #ifndef SLJIT_MEMMOVE
 214 #define SLJIT_MEMMOVE(dest, src, len) memmove(dest, src, len)
 215 #endif
 216
 217 #ifndef SLJIT_ZEROMEM
 218 #define SLJIT_ZEROMEM(dest, len) memset(dest, 0, len)
 219 #endif
 220
 221 /***************************/
 222 /* Compiler helper macros. */
 223 /***************************/
 224
 225 #if !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY)
 226
 227 #if defined(__GNUC__) && (__GNUC__ >= 3)
 228 #define SLJIT_LIKELY(x)         __builtin_expect((x), 1)
 229 #define SLJIT_UNLIKELY(x)       __builtin_expect((x), 0)
 230 #else
 231 #define SLJIT_LIKELY(x)         (x)
 232 #define SLJIT_UNLIKELY(x)       (x)
 233 #endif
 234
 235 #endif /* !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY) */
 236
 237 #ifndef SLJIT_INLINE
 238 /* Inline functions. Some old compilers do not support them. */
 239 #if defined(__SUNPRO_C) && __SUNPRO_C <= 0x510
 240 #define SLJIT_INLINE
 241 #else
 242 #define SLJIT_INLINE __inline
 243 #endif
 244 #endif /* !SLJIT_INLINE */
 245
 246 #ifndef SLJIT_NOINLINE
 247 /* Not inline functions. */
 248 #if defined(__GNUC__)
 249 #define SLJIT_NOINLINE __attribute__ ((noinline))
 250 #else
 251 #define SLJIT_NOINLINE
 252 #endif
 253 #endif /* !SLJIT_INLINE */
 254
 255 #ifndef SLJIT_UNUSED_ARG
 256 /* Unused arguments. */
 257 #define SLJIT_UNUSED_ARG(arg) (void)arg
 258 #endif
 259
 260 /*********************************/
 261 /* Type of public API functions. */
 262 /*********************************/
 263
 264 #if (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC)
 265 /* Static ABI functions. For all-in-one programs. */
 266
 267 #if defined(__GNUC__)
 268 /* Disable unused warnings in gcc. */
 269 #define SLJIT_API_FUNC_ATTRIBUTE static __attribute__((unused))
 270 #else
 271 #define SLJIT_API_FUNC_ATTRIBUTE static
 272 #endif
 273
 274 #else
 275 #define SLJIT_API_FUNC_ATTRIBUTE
 276 #endif /* (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC) */
 277
 278 /****************************/
 279 /* Instruction cache flush. */
 280 /****************************/
 281
 282 #if (!defined SLJIT_CACHE_FLUSH && defined __has_builtin)
 283 #if __has_builtin(__builtin___clear_cache)
 284
 285 #define SLJIT_CACHE_FLUSH(from, to) \
 286         __builtin___clear_cache((char*)from, (char*)to)
 287
 288 #endif /* __has_builtin(__builtin___clear_cache) */
 289 #endif /* (!defined SLJIT_CACHE_FLUSH && defined __has_builtin) */
 290
 291 #ifndef SLJIT_CACHE_FLUSH
 292
 293 #if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86)
 294
 295 /* Not required to implement on archs with unified caches. */
 296 #define SLJIT_CACHE_FLUSH(from, to)
 297
 298 #elif defined __APPLE__
 299
 300 /* Supported by all macs since Mac OS 10.5.
 301    However, it does not work on non-jailbroken iOS devices,
 302    although the compilation is successful. */
 303
 304 #define SLJIT_CACHE_FLUSH(from, to) \
 305         sys_icache_invalidate((char*)(from), (char*)(to) - (char*)(from))
 306
 307 #elif (defined(__GNUC__) && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
 308
 309 #define SLJIT_CACHE_FLUSH(from, to) \
 310         __builtin___clear_cache((char*)from, (char*)to)
 311
 312 #elif defined __ANDROID__
 313
 314 /* Android lacks __clear_cache; instead, cacheflush should be used. */
 315
 316 #define SLJIT_CACHE_FLUSH(from, to) \
 317     cacheflush((long)(from), (long)(to), 0)
 318
 319 #elif (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC)
 320
 321 /* The __clear_cache() implementation of GCC is a dummy function on PowerPC. */
 322 #define SLJIT_CACHE_FLUSH(from, to) \
 323         ppc_cache_flush((from), (to))
 324 #define SLJIT_CACHE_FLUSH_OWN_IMPL 1
 325
 326 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 327
 328 /* The __clear_cache() implementation of GCC is a dummy function on Sparc. */
 329 #define SLJIT_CACHE_FLUSH(from, to) \
 330         sparc_cache_flush((from), (to))
 331 #define SLJIT_CACHE_FLUSH_OWN_IMPL 1
 332
 333 #else
 334
 335 /* Calls __ARM_NR_cacheflush on ARM-Linux. */
 336 #define SLJIT_CACHE_FLUSH(from, to) \
 337         __clear_cache((char*)(from), (char*)(to))
 338
 339 #endif
 340
 341 #endif /* !SLJIT_CACHE_FLUSH */
 342
 343 /******************************************************/
 344 /*    Integer and floating point type definitions.    */
 345 /******************************************************/
 346
 347 /* 8 bit byte type. */
 348 typedef unsigned char sljit_u8;
 349 typedef signed char sljit_s8;
 350
 351 /* 16 bit half-word type. */
 352 typedef unsigned short int sljit_u16;
 353 typedef signed short int sljit_s16;
 354
 355 /* 32 bit integer type. */
 356 typedef unsigned int sljit_u32;
 357 typedef signed int sljit_s32;
 358
 359 /* Machine word type. Enough for storing a pointer.
 360      32 bit for 32 bit machines.
 361      64 bit for 64 bit machines. */
 362 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 363 /* Just to have something. */
 364 #define SLJIT_WORD_SHIFT 0
 365 typedef unsigned long int sljit_uw;
 366 typedef long int sljit_sw;
 367 #elif !(defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
 368         && !(defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
 369         && !(defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
 370         && !(defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
 371         && !(defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX)
 372 #define SLJIT_32BIT_ARCHITECTURE 1
 373 #define SLJIT_WORD_SHIFT 2
 374 typedef unsigned int sljit_uw;
 375 typedef int sljit_sw;
 376 #else
 377 #define SLJIT_64BIT_ARCHITECTURE 1
 378 #define SLJIT_WORD_SHIFT 3
 379 #ifdef _WIN32
 380 typedef unsigned __int64 sljit_uw;
 381 typedef __int64 sljit_sw;
 382 #else
 383 typedef unsigned long int sljit_uw;
 384 typedef long int sljit_sw;
 385 #endif
 386 #endif
 387
 388 typedef sljit_uw sljit_p;
 389
 390 /* Floating point types. */
 391 typedef float sljit_f32;
 392 typedef double sljit_f64;
 393
 394 /* Shift for pointer sized data. */
 395 #define SLJIT_POINTER_SHIFT SLJIT_WORD_SHIFT
 396
 397 /* Shift for double precision sized data. */
 398 #define SLJIT_F32_SHIFT 2
 399 #define SLJIT_F64_SHIFT 3
 400
 401 #ifndef SLJIT_W
 402
 403 /* Defining long constants. */
 404 #if (defined SLJIT_64BIT_ARCHITECTURE && SLJIT_64BIT_ARCHITECTURE)
 405 #define SLJIT_W(w)      (w##ll)
 406 #else
 407 #define SLJIT_W(w)      (w)
 408 #endif
 409
 410 #endif /* !SLJIT_W */
 411
 412 /*************************/
 413 /* Endianness detection. */
 414 /*************************/
 415
 416 #if !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN)
 417
 418 /* These macros are mostly useful for the applications. */
 419 #if (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
 420         || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
 421
 422 #ifdef __LITTLE_ENDIAN__
 423 #define SLJIT_LITTLE_ENDIAN 1
 424 #else
 425 #define SLJIT_BIG_ENDIAN 1
 426 #endif
 427
 428 #elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
 429         || (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 430
 431 #ifdef __MIPSEL__
 432 #define SLJIT_LITTLE_ENDIAN 1
 433 #else
 434 #define SLJIT_BIG_ENDIAN 1
 435 #endif
 436
 437 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 438
 439 #define SLJIT_BIG_ENDIAN 1
 440
 441 #else
 442 #define SLJIT_LITTLE_ENDIAN 1
 443 #endif
 444
 445 #endif /* !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN) */
 446
 447 /* Sanity check. */
 448 #if (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && (defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
 449 #error "Exactly one endianness must be selected"
 450 #endif
 451
 452 #if !(defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && !(defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
 453 #error "Exactly one endianness must be selected"
 454 #endif
 455
 456 #ifndef SLJIT_UNALIGNED
 457
 458 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
 459         || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
 460         || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
 461         || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
 462         || (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
 463         || (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
 464         || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
 465 #define SLJIT_UNALIGNED 1
 466 #endif
 467
 468 #endif /* !SLJIT_UNALIGNED */
 469
 470 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 471 /* Auto detect SSE2 support using CPUID.
 472    On 64 bit x86 cpus, sse2 must be present. */
 473 #define SLJIT_DETECT_SSE2 1
 474 #endif
 475
 476 /*****************************************************************************************/
 477 /* Calling convention of functions generated by SLJIT or called from the generated code. */
 478 /*****************************************************************************************/
 479
 480 #ifndef SLJIT_CALL
 481
 482 #if (defined SLJIT_USE_CDECL_CALLING_CONVENTION && SLJIT_USE_CDECL_CALLING_CONVENTION)
 483
 484 /* Force cdecl. */
 485 #define SLJIT_CALL
 486
 487 #elif (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 488
 489 #if defined(__GNUC__) && !defined(__APPLE__)
 490
 491 #define SLJIT_CALL __attribute__ ((fastcall))
 492 #define SLJIT_X86_32_FASTCALL 1
 493
 494 #elif defined(_MSC_VER)
 495
 496 #define SLJIT_CALL __fastcall
 497 #define SLJIT_X86_32_FASTCALL 1
 498
 499 #elif defined(__BORLANDC__)
 500
 501 #define SLJIT_CALL __msfastcall
 502 #define SLJIT_X86_32_FASTCALL 1
 503
 504 #else /* Unknown compiler. */
 505
 506 /* The cdecl attribute is the default. */
 507 #define SLJIT_CALL
 508
 509 #endif
 510
 511 #else /* Non x86-32 architectures. */
 512
 513 #define SLJIT_CALL
 514
 515 #endif /* SLJIT_CONFIG_X86_32 */
 516
 517 #endif /* !SLJIT_CALL */
 518
 519 #ifndef SLJIT_INDIRECT_CALL
 520 #if ((defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) && (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN)) \
 521         || ((defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) && defined _AIX)
 522 /* It seems certain ppc compilers use an indirect addressing for functions
 523    which makes things complicated. */
 524 #define SLJIT_INDIRECT_CALL 1
 525 #endif
 526 #endif /* SLJIT_INDIRECT_CALL */
 527
 528 /* The offset which needs to be substracted from the return address to
 529 determine the next executed instruction after return. */
 530 #ifndef SLJIT_RETURN_ADDRESS_OFFSET
 531 #if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 532 #define SLJIT_RETURN_ADDRESS_OFFSET 8
 533 #else
 534 #define SLJIT_RETURN_ADDRESS_OFFSET 0
 535 #endif
 536 #endif /* SLJIT_RETURN_ADDRESS_OFFSET */
 537
 538 /***************************************************/
 539 /* Functions of the built-in executable allocator. */
 540 /***************************************************/
 541
 542 #if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
 543 SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size);
 544 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr);
 545 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void);
 546 #define SLJIT_MALLOC_EXEC(size) sljit_malloc_exec(size)
 547 #define SLJIT_FREE_EXEC(ptr) sljit_free_exec(ptr)
 548 #endif
 549
 550 /**********************************************/
 551 /* Registers and locals offset determination. */
 552 /**********************************************/
 553
 554 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 555
 556 #define SLJIT_NUMBER_OF_REGISTERS 10
 557 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 7
 558 #if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL)
 559 #define SLJIT_LOCALS_OFFSET_BASE ((2 + 4) * sizeof(sljit_sw))
 560 #else
 561 /* Maximum 3 arguments are passed on the stack, +1 for double alignment. */
 562 #define SLJIT_LOCALS_OFFSET_BASE ((3 + 1 + 4) * sizeof(sljit_sw))
 563 #endif /* SLJIT_X86_32_FASTCALL */
 564
 565 #elif (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
 566
 567 #ifndef _WIN64
 568 #define SLJIT_NUMBER_OF_REGISTERS 12
 569 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 6
 570 #define SLJIT_LOCALS_OFFSET_BASE (sizeof(sljit_sw))
 571 #else
 572 #define SLJIT_NUMBER_OF_REGISTERS 12
 573 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 574 #define SLJIT_LOCALS_OFFSET_BASE ((4 + 2) * sizeof(sljit_sw))
 575 #endif /* _WIN64 */
 576
 577 #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
 578
 579 #define SLJIT_NUMBER_OF_REGISTERS 11
 580 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 581 #define SLJIT_LOCALS_OFFSET_BASE 0
 582
 583 #elif (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2)
 584
 585 #define SLJIT_NUMBER_OF_REGISTERS 11
 586 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 7
 587 #define SLJIT_LOCALS_OFFSET_BASE 0
 588
 589 #elif (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64)
 590
 591 #define SLJIT_NUMBER_OF_REGISTERS 25
 592 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 10
 593 #define SLJIT_LOCALS_OFFSET_BASE (2 * sizeof(sljit_sw))
 594
 595 #elif (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC)
 596
 597 #define SLJIT_NUMBER_OF_REGISTERS 22
 598 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 17
 599 #if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) || (defined _AIX)
 600 #define SLJIT_LOCALS_OFFSET_BASE ((6 + 8) * sizeof(sljit_sw))
 601 #elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32)
 602 /* Add +1 for double alignment. */
 603 #define SLJIT_LOCALS_OFFSET_BASE ((3 + 1) * sizeof(sljit_sw))
 604 #else
 605 #define SLJIT_LOCALS_OFFSET_BASE (3 * sizeof(sljit_sw))
 606 #endif /* SLJIT_CONFIG_PPC_64 || _AIX */
 607
 608 #elif (defined SLJIT_CONFIG_MIPS && SLJIT_CONFIG_MIPS)
 609
 610 #define SLJIT_NUMBER_OF_REGISTERS 17
 611 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 612 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 613 #define SLJIT_LOCALS_OFFSET_BASE (4 * sizeof(sljit_sw))
 614 #else
 615 #define SLJIT_LOCALS_OFFSET_BASE 0
 616 #endif
 617
 618 #elif (defined SLJIT_CONFIG_SPARC && SLJIT_CONFIG_SPARC)
 619
 620 #define SLJIT_NUMBER_OF_REGISTERS 18
 621 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 14
 622 #if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 623 /* Add +1 for double alignment. */
 624 #define SLJIT_LOCALS_OFFSET_BASE ((23 + 1) * sizeof(sljit_sw))
 625 #endif
 626
 627 #elif (defined SLJIT_CONFIG_TILEGX && SLJIT_CONFIG_TILEGX)
 628
 629 #define SLJIT_NUMBER_OF_REGISTERS 10
 630 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 5
 631 #define SLJIT_LOCALS_OFFSET_BASE 0
 632
 633 #elif (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 634
 635 #define SLJIT_NUMBER_OF_REGISTERS 0
 636 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 0
 637 #define SLJIT_LOCALS_OFFSET_BASE 0
 638
 639 #endif
 640
 641 #define SLJIT_LOCALS_OFFSET (SLJIT_LOCALS_OFFSET_BASE)
 642
 643 #define SLJIT_NUMBER_OF_SCRATCH_REGISTERS \
 644         (SLJIT_NUMBER_OF_REGISTERS - SLJIT_NUMBER_OF_SAVED_REGISTERS)
 645
 646 #define SLJIT_NUMBER_OF_FLOAT_REGISTERS 6
 647 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) && (defined _WIN64)
 648 #define SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS 1
 649 #else
 650 #define SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS 0
 651 #endif
 652
 653 #define SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS \
 654         (SLJIT_NUMBER_OF_FLOAT_REGISTERS - SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS)
 655
 656 /*************************************/
 657 /* Debug and verbose related macros. */
 658 /*************************************/
 659
 660 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE)
 661 #include <stdio.h>
 662 #endif
 663
 664 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 665
 666 #if !defined(SLJIT_ASSERT) || !defined(SLJIT_ASSERT_STOP)
 667
 668 /* SLJIT_HALT_PROCESS must halt the process. */
 669 #ifndef SLJIT_HALT_PROCESS
 670 #include <stdlib.h>
 671
 672 #define SLJIT_HALT_PROCESS() \
 673         abort();
 674 #endif /* !SLJIT_HALT_PROCESS */
 675
 676 #include <stdio.h>
 677
 678 #endif /* !SLJIT_ASSERT || !SLJIT_ASSERT_STOP */
 679
 680 /* Feel free to redefine these two macros. */
 681 #ifndef SLJIT_ASSERT
 682
 683 #define SLJIT_ASSERT(x) \
 684         do { \
 685                 if (SLJIT_UNLIKELY(!(x))) { \
 686                         printf("Assertion failed at " __FILE__ ":%d\n", __LINE__); \
 687                         SLJIT_HALT_PROCESS(); \
 688                 } \
 689         } while (0)
 690
 691 #endif /* !SLJIT_ASSERT */
 692
 693 #ifndef SLJIT_ASSERT_STOP
 694
 695 #define SLJIT_ASSERT_STOP() \
 696         do { \
 697                 printf("Should never been reached " __FILE__ ":%d\n", __LINE__); \
 698                 SLJIT_HALT_PROCESS(); \
 699         } while (0)
 700
 701 #endif /* !SLJIT_ASSERT_STOP */
 702
 703 #else /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
 704
 705 /* Forcing empty, but valid statements. */
 706 #undef SLJIT_ASSERT
 707 #undef SLJIT_ASSERT_STOP
 708
 709 #define SLJIT_ASSERT(x) \
 710         do { } while (0)
 711 #define SLJIT_ASSERT_STOP() \
 712         do { } while (0)
 713
 714 #endif /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
 715
 716 #ifndef SLJIT_COMPILE_ASSERT
 717
 718 /* Should be improved eventually. */
 719 #define SLJIT_COMPILE_ASSERT(x, description) \
 720         SLJIT_ASSERT(x)
 721
 722 #endif /* !SLJIT_COMPILE_ASSERT */
 723
 724 #endif