sljit_src/sljitConfigInternal.h

   1 /*
   2  *    Stack-less Just-In-Time compiler
   3  *
   4  *    Copyright 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 #if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
  31         || (defined SLJIT_DEBUG && SLJIT_DEBUG && (!defined(SLJIT_ASSERT) || !defined(SLJIT_UNREACHABLE)))
  32 #include <stdio.h>
  33 #endif
  34
  35 #if (defined SLJIT_DEBUG && SLJIT_DEBUG \
  36         && (!defined(SLJIT_ASSERT) || !defined(SLJIT_UNREACHABLE) || !defined(SLJIT_HALT_PROCESS)))
  37 #include <stdlib.h>
  38 #endif
  39
  40 #ifdef __cplusplus
  41 extern "C" {
  42 #endif
  43
  44 /*
  45    SLJIT defines the following architecture dependent types and macros:
  46
  47    Types:
  48      sljit_s8, sljit_u8   : signed and unsigned 8 bit integer type
  49      sljit_s16, sljit_u16 : signed and unsigned 16 bit integer type
  50      sljit_s32, sljit_u32 : signed and unsigned 32 bit integer type
  51      sljit_sw, sljit_uw   : signed and unsigned machine word, enough to store a pointer
  52      sljit_p              : unsgined pointer value (usually the same as sljit_uw, but
  53                             some 64 bit ABIs may use 32 bit pointers)
  54      sljit_f32            : 32 bit single precision floating point value
  55      sljit_f64            : 64 bit double precision floating point value
  56
  57    Macros for feature detection (boolean):
  58      SLJIT_32BIT_ARCHITECTURE : 32 bit architecture
  59      SLJIT_64BIT_ARCHITECTURE : 64 bit architecture
  60      SLJIT_LITTLE_ENDIAN : little endian architecture
  61      SLJIT_BIG_ENDIAN : big endian architecture
  62      SLJIT_UNALIGNED : allows unaligned memory accesses for non-fpu operations (only!)
  63      SLJIT_INDIRECT_CALL : see SLJIT_FUNC_OFFSET() for more information
  64
  65    Constants:
  66      SLJIT_NUMBER_OF_REGISTERS : number of available registers
  67      SLJIT_NUMBER_OF_SCRATCH_REGISTERS : number of available scratch registers
  68      SLJIT_NUMBER_OF_SAVED_REGISTERS : number of available saved registers
  69      SLJIT_NUMBER_OF_FLOAT_REGISTERS : number of available floating point registers
  70      SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS : number of available floating point scratch registers
  71      SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS : number of available floating point saved registers
  72      SLJIT_WORD_SHIFT : the shift required to apply when accessing a sljit_sw/sljit_uw array by index
  73      SLJIT_F32_SHIFT : the shift required to apply when accessing
  74                        a single precision floating point array by index
  75      SLJIT_F64_SHIFT : the shift required to apply when accessing
  76                        a double precision floating point array by index
  77      SLJIT_PREF_SHIFT_REG : x86 systems prefers ecx for shifting by register
  78                             the scratch register index of ecx is stored in this variable
  79      SLJIT_LOCALS_OFFSET : local space starting offset (SLJIT_SP + SLJIT_LOCALS_OFFSET)
  80      SLJIT_RETURN_ADDRESS_OFFSET : a return instruction always adds this offset to the return address
  81
  82    Other macros:
  83      SLJIT_FUNC : calling convention attribute for both calling JIT from C and C calling back from JIT
  84      SLJIT_W(number) : defining 64 bit constants on 64 bit architectures (platform independent helper)
  85 */
  86
  87 /*****************/
  88 /* Sanity check. */
  89 /*****************/
  90
  91 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
  92         + (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
  93         + (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
  94         + (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
  95         + (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
  96         + (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
  97         + (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
  98         + (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
  99         + (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
 100         + (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
 101         + (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
 102         + (defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X) \
 103         + (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO) \
 104         + (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) >= 2
 105 #error "Multiple architectures are selected"
 106 #endif
 107
 108 #if !(defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
 109         && !(defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
 110         && !(defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) \
 111         && !(defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
 112         && !(defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
 113         && !(defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
 114         && !(defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
 115         && !(defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
 116         && !(defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
 117         && !(defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
 118         && !(defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
 119         && !(defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X) \
 120         && !(defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED) \
 121         && !(defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO)
 122 #if defined SLJIT_CONFIG_AUTO && !SLJIT_CONFIG_AUTO
 123 #error "An architecture must be selected"
 124 #else /* SLJIT_CONFIG_AUTO */
 125 #define SLJIT_CONFIG_AUTO 1
 126 #endif /* !SLJIT_CONFIG_AUTO */
 127 #endif /* !SLJIT_CONFIG */
 128
 129 /********************************************************/
 130 /* Automatic CPU detection (requires compiler support). */
 131 /********************************************************/
 132
 133 #if (defined SLJIT_CONFIG_AUTO && SLJIT_CONFIG_AUTO)
 134
 135 #ifndef _WIN32
 136
 137 #if defined(__i386__) || defined(__i386)
 138 #define SLJIT_CONFIG_X86_32 1
 139 #elif defined(__x86_64__)
 140 #define SLJIT_CONFIG_X86_64 1
 141 #elif defined(__arm__) || defined(__ARM__)
 142 #ifdef __thumb2__
 143 #define SLJIT_CONFIG_ARM_THUMB2 1
 144 #elif defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__)
 145 #define SLJIT_CONFIG_ARM_V7 1
 146 #else
 147 #define SLJIT_CONFIG_ARM_V5 1
 148 #endif
 149 #elif defined (__aarch64__)
 150 #define SLJIT_CONFIG_ARM_64 1
 151 #elif defined(__ppc64__) || defined(__powerpc64__) || defined(_ARCH_PPC64) || (defined(_POWER) && defined(__64BIT__))
 152 #define SLJIT_CONFIG_PPC_64 1
 153 #elif defined(__ppc__) || defined(__powerpc__) || defined(_ARCH_PPC) || defined(_ARCH_PWR) || defined(_ARCH_PWR2) || defined(_POWER)
 154 #define SLJIT_CONFIG_PPC_32 1
 155 #elif defined(__mips__) && !defined(_LP64)
 156 #define SLJIT_CONFIG_MIPS_32 1
 157 #elif defined(__mips64)
 158 #define SLJIT_CONFIG_MIPS_64 1
 159 #elif defined(__sparc__) || defined(__sparc)
 160 #define SLJIT_CONFIG_SPARC_32 1
 161 #elif defined(__s390x__)
 162 #define SLJIT_CONFIG_S390X 1
 163 #else
 164 /* Unsupported architecture */
 165 #define SLJIT_CONFIG_UNSUPPORTED 1
 166 #endif
 167
 168 #else /* _WIN32 */
 169
 170 #if defined(_M_X64) || defined(__x86_64__)
 171 #define SLJIT_CONFIG_X86_64 1
 172 #elif (defined(_M_ARM) && _M_ARM >= 7 && defined(_M_ARMT)) || defined(__thumb2__)
 173 #define SLJIT_CONFIG_ARM_THUMB2 1
 174 #elif (defined(_M_ARM) && _M_ARM >= 7)
 175 #define SLJIT_CONFIG_ARM_V7 1
 176 #elif defined(_ARM_)
 177 #define SLJIT_CONFIG_ARM_V5 1
 178 #elif defined(_M_ARM64) || defined(__aarch64__)
 179 #define SLJIT_CONFIG_ARM_64 1
 180 #else
 181 #define SLJIT_CONFIG_X86_32 1
 182 #endif
 183
 184 #endif /* !_WIN32 */
 185 #endif /* SLJIT_CONFIG_AUTO */
 186
 187 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 188 #undef SLJIT_EXECUTABLE_ALLOCATOR
 189 #endif
 190
 191 /******************************/
 192 /* CPU family type detection. */
 193 /******************************/
 194
 195 #if (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
 196         || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2)
 197 #define SLJIT_CONFIG_ARM_32 1
 198 #endif
 199
 200 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
 201 #define SLJIT_CONFIG_X86 1
 202 #elif (defined SLJIT_CONFIG_ARM_32 && SLJIT_CONFIG_ARM_32) || (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64)
 203 #define SLJIT_CONFIG_ARM 1
 204 #elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
 205 #define SLJIT_CONFIG_PPC 1
 206 #elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) || (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 207 #define SLJIT_CONFIG_MIPS 1
 208 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) || (defined SLJIT_CONFIG_SPARC_64 && SLJIT_CONFIG_SPARC_64)
 209 #define SLJIT_CONFIG_SPARC 1
 210 #endif
 211
 212 /***********************************************************/
 213 /* Intel Control-flow Enforcement Technology (CET) spport. */
 214 /***********************************************************/
 215
 216 #ifdef SLJIT_CONFIG_X86
 217
 218 #if defined(__CET__) && !(defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET)
 219 #define SLJIT_CONFIG_X86_CET 1
 220 #endif
 221
 222 #if (defined SLJIT_CONFIG_X86_CET && SLJIT_CONFIG_X86_CET) && defined(__GNUC__)
 223 #include <x86intrin.h>
 224 #endif
 225
 226 #endif /* SLJIT_CONFIG_X86 */
 227
 228 /**********************************/
 229 /* External function definitions. */
 230 /**********************************/
 231
 232 /* General macros:
 233    Note: SLJIT is designed to be independent from them as possible.
 234
 235    In release mode (SLJIT_DEBUG is not defined) only the following
 236    external functions are needed:
 237 */
 238
 239 #ifndef SLJIT_MALLOC
 240 #define SLJIT_MALLOC(size, allocator_data) malloc(size)
 241 #endif
 242
 243 #ifndef SLJIT_FREE
 244 #define SLJIT_FREE(ptr, allocator_data) free(ptr)
 245 #endif
 246
 247 #ifndef SLJIT_MEMCPY
 248 #define SLJIT_MEMCPY(dest, src, len) memcpy(dest, src, len)
 249 #endif
 250
 251 #ifndef SLJIT_MEMMOVE
 252 #define SLJIT_MEMMOVE(dest, src, len) memmove(dest, src, len)
 253 #endif
 254
 255 #ifndef SLJIT_ZEROMEM
 256 #define SLJIT_ZEROMEM(dest, len) memset(dest, 0, len)
 257 #endif
 258
 259 /***************************/
 260 /* Compiler helper macros. */
 261 /***************************/
 262
 263 #if !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY)
 264
 265 #if defined(__GNUC__) && (__GNUC__ >= 3)
 266 #define SLJIT_LIKELY(x)         __builtin_expect((x), 1)
 267 #define SLJIT_UNLIKELY(x)       __builtin_expect((x), 0)
 268 #else
 269 #define SLJIT_LIKELY(x)         (x)
 270 #define SLJIT_UNLIKELY(x)       (x)
 271 #endif
 272
 273 #endif /* !defined(SLJIT_LIKELY) && !defined(SLJIT_UNLIKELY) */
 274
 275 #ifndef SLJIT_INLINE
 276 /* Inline functions. Some old compilers do not support them. */
 277 #if defined(__SUNPRO_C) && __SUNPRO_C <= 0x510
 278 #define SLJIT_INLINE
 279 #else
 280 #define SLJIT_INLINE __inline
 281 #endif
 282 #endif /* !SLJIT_INLINE */
 283
 284 #ifndef SLJIT_NOINLINE
 285 /* Not inline functions. */
 286 #if defined(__GNUC__)
 287 #define SLJIT_NOINLINE __attribute__ ((noinline))
 288 #else
 289 #define SLJIT_NOINLINE
 290 #endif
 291 #endif /* !SLJIT_INLINE */
 292
 293 #ifndef SLJIT_UNUSED_ARG
 294 /* Unused arguments. */
 295 #define SLJIT_UNUSED_ARG(arg) (void)arg
 296 #endif
 297
 298 /*********************************/
 299 /* Type of public API functions. */
 300 /*********************************/
 301
 302 #ifndef SLJIT_API_FUNC_ATTRIBUTE
 303 #if (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC)
 304 /* Static ABI functions. For all-in-one programs. */
 305
 306 #if defined(__GNUC__)
 307 /* Disable unused warnings in gcc. */
 308 #define SLJIT_API_FUNC_ATTRIBUTE static __attribute__((unused))
 309 #else
 310 #define SLJIT_API_FUNC_ATTRIBUTE static
 311 #endif
 312
 313 #else
 314 #define SLJIT_API_FUNC_ATTRIBUTE
 315 #endif /* (defined SLJIT_CONFIG_STATIC && SLJIT_CONFIG_STATIC) */
 316 #endif /* defined SLJIT_API_FUNC_ATTRIBUTE */
 317
 318 /****************************/
 319 /* Instruction cache flush. */
 320 /****************************/
 321
 322 #if (!defined SLJIT_CACHE_FLUSH && defined __has_builtin)
 323 #if __has_builtin(__builtin___clear_cache)
 324
 325 #define SLJIT_CACHE_FLUSH(from, to) \
 326         __builtin___clear_cache((char*)(from), (char*)(to))
 327
 328 #endif /* __has_builtin(__builtin___clear_cache) */
 329 #endif /* (!defined SLJIT_CACHE_FLUSH && defined __has_builtin) */
 330
 331 #ifndef SLJIT_CACHE_FLUSH
 332
 333 #if (defined SLJIT_CONFIG_X86 && SLJIT_CONFIG_X86)
 334
 335 /* Not required to implement on archs with unified caches. */
 336 #define SLJIT_CACHE_FLUSH(from, to)
 337
 338 #elif defined __APPLE__
 339
 340 /* Supported by all macs since Mac OS 10.5.
 341    However, it does not work on non-jailbroken iOS devices,
 342    although the compilation is successful. */
 343
 344 #define SLJIT_CACHE_FLUSH(from, to) \
 345         sys_icache_invalidate((char*)(from), (char*)(to) - (char*)(from))
 346
 347 #elif (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC)
 348
 349 /* The __clear_cache() implementation of GCC is a dummy function on PowerPC. */
 350 #define SLJIT_CACHE_FLUSH(from, to) \
 351         ppc_cache_flush((from), (to))
 352 #define SLJIT_CACHE_FLUSH_OWN_IMPL 1
 353
 354 #elif (defined(__GNUC__) && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)))
 355
 356 #define SLJIT_CACHE_FLUSH(from, to) \
 357         __builtin___clear_cache((char*)(from), (char*)(to))
 358
 359 #elif defined __ANDROID__
 360
 361 /* Android lacks __clear_cache; instead, cacheflush should be used. */
 362
 363 #define SLJIT_CACHE_FLUSH(from, to) \
 364     cacheflush((long)(from), (long)(to), 0)
 365
 366 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 367
 368 /* The __clear_cache() implementation of GCC is a dummy function on Sparc. */
 369 #define SLJIT_CACHE_FLUSH(from, to) \
 370         sparc_cache_flush((from), (to))
 371 #define SLJIT_CACHE_FLUSH_OWN_IMPL 1
 372
 373 #elif defined _WIN32
 374
 375 #define SLJIT_CACHE_FLUSH(from, to) \
 376         FlushInstructionCache(GetCurrentProcess(), (char*)(from), (char*)(to) - (char*)(from))
 377
 378 #else
 379
 380 /* Calls __ARM_NR_cacheflush on ARM-Linux. */
 381 #define SLJIT_CACHE_FLUSH(from, to) \
 382         __clear_cache((char*)(from), (char*)(to))
 383
 384 #endif
 385
 386 #endif /* !SLJIT_CACHE_FLUSH */
 387
 388 /******************************************************/
 389 /*    Integer and floating point type definitions.    */
 390 /******************************************************/
 391
 392 /* 8 bit byte type. */
 393 typedef unsigned char sljit_u8;
 394 typedef signed char sljit_s8;
 395
 396 /* 16 bit half-word type. */
 397 typedef unsigned short int sljit_u16;
 398 typedef signed short int sljit_s16;
 399
 400 /* 32 bit integer type. */
 401 typedef unsigned int sljit_u32;
 402 typedef signed int sljit_s32;
 403
 404 /* Machine word type. Enough for storing a pointer.
 405      32 bit for 32 bit machines.
 406      64 bit for 64 bit machines. */
 407 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 408 /* Just to have something. */
 409 #define SLJIT_WORD_SHIFT 0
 410 typedef unsigned long int sljit_uw;
 411 typedef long int sljit_sw;
 412 #elif !(defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
 413         && !(defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
 414         && !(defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
 415         && !(defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64) \
 416         && !(defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X)
 417 #define SLJIT_32BIT_ARCHITECTURE 1
 418 #define SLJIT_WORD_SHIFT 2
 419 typedef unsigned int sljit_uw;
 420 typedef int sljit_sw;
 421 #else
 422 #define SLJIT_64BIT_ARCHITECTURE 1
 423 #define SLJIT_WORD_SHIFT 3
 424 #ifdef _WIN32
 425 #ifdef __GNUC__
 426 /* These types do not require windows.h */
 427 typedef unsigned long long sljit_uw;
 428 typedef long long sljit_sw;
 429 #else
 430 typedef unsigned __int64 sljit_uw;
 431 typedef __int64 sljit_sw;
 432 #endif
 433 #else /* !_WIN32 */
 434 typedef unsigned long int sljit_uw;
 435 typedef long int sljit_sw;
 436 #endif /* _WIN32 */
 437 #endif
 438
 439 typedef sljit_uw sljit_p;
 440
 441 /* Floating point types. */
 442 typedef float sljit_f32;
 443 typedef double sljit_f64;
 444
 445 /* Shift for pointer sized data. */
 446 #define SLJIT_POINTER_SHIFT SLJIT_WORD_SHIFT
 447
 448 /* Shift for double precision sized data. */
 449 #define SLJIT_F32_SHIFT 2
 450 #define SLJIT_F64_SHIFT 3
 451
 452 #ifndef SLJIT_W
 453
 454 /* Defining long constants. */
 455 #if (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 456 #define SLJIT_W(w)      (w##l)
 457 #elif (defined SLJIT_64BIT_ARCHITECTURE && SLJIT_64BIT_ARCHITECTURE)
 458 #ifdef _WIN64
 459 #define SLJIT_W(w)      (w##ll)
 460 #else /* !windows */
 461 #define SLJIT_W(w)      (w##l)
 462 #endif /* windows */
 463 #else /* 32 bit */
 464 #define SLJIT_W(w)      (w)
 465 #endif /* unknown */
 466
 467 #endif /* !SLJIT_W */
 468
 469 /*************************/
 470 /* Endianness detection. */
 471 /*************************/
 472
 473 #if !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN)
 474
 475 /* These macros are mostly useful for the applications. */
 476 #if (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
 477         || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64)
 478
 479 #ifdef __LITTLE_ENDIAN__
 480 #define SLJIT_LITTLE_ENDIAN 1
 481 #else
 482 #define SLJIT_BIG_ENDIAN 1
 483 #endif
 484
 485 #elif (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32) \
 486         || (defined SLJIT_CONFIG_MIPS_64 && SLJIT_CONFIG_MIPS_64)
 487
 488 #ifdef __MIPSEL__
 489 #define SLJIT_LITTLE_ENDIAN 1
 490 #else
 491 #define SLJIT_BIG_ENDIAN 1
 492 #endif
 493
 494 #ifndef SLJIT_MIPS_REV
 495
 496 /* Auto detecting mips revision. */
 497 #if (defined __mips_isa_rev) && (__mips_isa_rev >= 6)
 498 #define SLJIT_MIPS_REV 6
 499 #elif (defined __mips_isa_rev && __mips_isa_rev >= 1) \
 500         || (defined __clang__ && defined _MIPS_ARCH_OCTEON) \
 501         || (defined __clang__ && defined _MIPS_ARCH_P5600)
 502 /* clang either forgets to define (clang-7) __mips_isa_rev at all
 503  * or sets it to zero (clang-8,-9) for -march=octeon (MIPS64 R2+)
 504  * and -march=p5600 (MIPS32 R5).
 505  * It also sets the __mips macro to 64 or 32 for -mipsN when N <= 5
 506  * (should be set to N exactly) so we cannot rely on this too.
 507  */
 508 #define SLJIT_MIPS_REV 1
 509 #endif
 510
 511 #endif /* !SLJIT_MIPS_REV */
 512
 513 #elif (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32) \
 514         || (defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X)
 515
 516 #define SLJIT_BIG_ENDIAN 1
 517
 518 #else
 519 #define SLJIT_LITTLE_ENDIAN 1
 520 #endif
 521
 522 #endif /* !defined(SLJIT_BIG_ENDIAN) && !defined(SLJIT_LITTLE_ENDIAN) */
 523
 524 /* Sanity check. */
 525 #if (defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && (defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
 526 #error "Exactly one endianness must be selected"
 527 #endif
 528
 529 #if !(defined SLJIT_BIG_ENDIAN && SLJIT_BIG_ENDIAN) && !(defined SLJIT_LITTLE_ENDIAN && SLJIT_LITTLE_ENDIAN)
 530 #error "Exactly one endianness must be selected"
 531 #endif
 532
 533 #ifndef SLJIT_UNALIGNED
 534
 535 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32) \
 536         || (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) \
 537         || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7) \
 538         || (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2) \
 539         || (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64) \
 540         || (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) \
 541         || (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) \
 542         || (defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X)
 543 #define SLJIT_UNALIGNED 1
 544 #endif
 545
 546 #endif /* !SLJIT_UNALIGNED */
 547
 548 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 549 /* Auto detect SSE2 support using CPUID.
 550    On 64 bit x86 cpus, sse2 must be present. */
 551 #define SLJIT_DETECT_SSE2 1
 552 #endif
 553
 554 /*****************************************************************************************/
 555 /* Calling convention of functions generated by SLJIT or called from the generated code. */
 556 /*****************************************************************************************/
 557
 558 #ifndef SLJIT_FUNC
 559
 560 #if (defined SLJIT_USE_CDECL_CALLING_CONVENTION && SLJIT_USE_CDECL_CALLING_CONVENTION) \
 561         || !(defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 562
 563 #define SLJIT_FUNC
 564
 565 #elif defined(__GNUC__) && !defined(__APPLE__)
 566
 567 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
 568 #define SLJIT_FUNC __attribute__ ((fastcall))
 569 #define SLJIT_X86_32_FASTCALL 1
 570 #else
 571 #define SLJIT_FUNC
 572 #endif /* gcc >= 3.4 */
 573
 574 #elif defined(_MSC_VER)
 575
 576 #define SLJIT_FUNC __fastcall
 577 #define SLJIT_X86_32_FASTCALL 1
 578
 579 #elif defined(__BORLANDC__)
 580
 581 #define SLJIT_FUNC __msfastcall
 582 #define SLJIT_X86_32_FASTCALL 1
 583
 584 #else /* Unknown compiler. */
 585
 586 /* The cdecl calling convention is usually the x86 default. */
 587 #define SLJIT_FUNC
 588
 589 #endif /* SLJIT_USE_CDECL_CALLING_CONVENTION */
 590
 591 #endif /* !SLJIT_FUNC */
 592
 593 #ifndef SLJIT_INDIRECT_CALL
 594 #if ((defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) && (!defined _CALL_ELF || _CALL_ELF == 1)) \
 595         || ((defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32) && defined _AIX)
 596 /* It seems certain ppc compilers use an indirect addressing for functions
 597    which makes things complicated. */
 598 #define SLJIT_INDIRECT_CALL 1
 599 #endif
 600 #endif /* SLJIT_INDIRECT_CALL */
 601
 602 /* The offset which needs to be substracted from the return address to
 603 determine the next executed instruction after return. */
 604 #ifndef SLJIT_RETURN_ADDRESS_OFFSET
 605 #if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 606 #define SLJIT_RETURN_ADDRESS_OFFSET 8
 607 #else
 608 #define SLJIT_RETURN_ADDRESS_OFFSET 0
 609 #endif
 610 #endif /* SLJIT_RETURN_ADDRESS_OFFSET */
 611
 612 /***************************************************/
 613 /* Functions of the built-in executable allocator. */
 614 /***************************************************/
 615
 616 #if (defined SLJIT_EXECUTABLE_ALLOCATOR && SLJIT_EXECUTABLE_ALLOCATOR)
 617 SLJIT_API_FUNC_ATTRIBUTE void* sljit_malloc_exec(sljit_uw size);
 618 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_exec(void* ptr);
 619 SLJIT_API_FUNC_ATTRIBUTE void sljit_free_unused_memory_exec(void);
 620 #define SLJIT_BUILTIN_MALLOC_EXEC(size, exec_allocator_data) sljit_malloc_exec(size)
 621 #define SLJIT_BUILTIN_FREE_EXEC(ptr, exec_allocator_data) sljit_free_exec(ptr)
 622
 623 #ifndef SLJIT_MALLOC_EXEC
 624 #define SLJIT_MALLOC_EXEC(size, exec_allocator_data) SLJIT_BUILTIN_MALLOC_EXEC((size), (exec_allocator_data))
 625 #endif /* SLJIT_MALLOC_EXEC */
 626
 627 #ifndef SLJIT_FREE_EXEC
 628 #define SLJIT_FREE_EXEC(ptr, exec_allocator_data) SLJIT_BUILTIN_FREE_EXEC((ptr), (exec_allocator_data))
 629 #endif /* SLJIT_FREE_EXEC */
 630
 631 #if (defined SLJIT_PROT_EXECUTABLE_ALLOCATOR && SLJIT_PROT_EXECUTABLE_ALLOCATOR)
 632 SLJIT_API_FUNC_ATTRIBUTE sljit_sw sljit_exec_offset(void* ptr);
 633 #define SLJIT_EXEC_OFFSET(ptr) sljit_exec_offset(ptr)
 634 #else
 635 #define SLJIT_EXEC_OFFSET(ptr) 0
 636 #endif
 637
 638 #endif /* SLJIT_EXECUTABLE_ALLOCATOR */
 639
 640 /**********************************************/
 641 /* Registers and locals offset determination. */
 642 /**********************************************/
 643
 644 #if (defined SLJIT_CONFIG_X86_32 && SLJIT_CONFIG_X86_32)
 645
 646 #define SLJIT_NUMBER_OF_REGISTERS 12
 647 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 9
 648 #define SLJIT_LOCALS_OFFSET_BASE (compiler->locals_offset)
 649 #define SLJIT_PREF_SHIFT_REG SLJIT_R2
 650
 651 #elif (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64)
 652
 653 #define SLJIT_NUMBER_OF_REGISTERS 13
 654 #ifndef _WIN64
 655 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 6
 656 #define SLJIT_LOCALS_OFFSET_BASE 0
 657 #else /* _WIN64 */
 658 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 659 #define SLJIT_LOCALS_OFFSET_BASE (compiler->locals_offset)
 660 #endif /* !_WIN64 */
 661 #define SLJIT_PREF_SHIFT_REG SLJIT_R3
 662
 663 #elif (defined SLJIT_CONFIG_ARM_V5 && SLJIT_CONFIG_ARM_V5) || (defined SLJIT_CONFIG_ARM_V7 && SLJIT_CONFIG_ARM_V7)
 664
 665 #define SLJIT_NUMBER_OF_REGISTERS 12
 666 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 667 #define SLJIT_LOCALS_OFFSET_BASE 0
 668
 669 #elif (defined SLJIT_CONFIG_ARM_THUMB2 && SLJIT_CONFIG_ARM_THUMB2)
 670
 671 #define SLJIT_NUMBER_OF_REGISTERS 12
 672 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 673 #define SLJIT_LOCALS_OFFSET_BASE 0
 674
 675 #elif (defined SLJIT_CONFIG_ARM_64 && SLJIT_CONFIG_ARM_64)
 676
 677 #define SLJIT_NUMBER_OF_REGISTERS 26
 678 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 10
 679 #define SLJIT_LOCALS_OFFSET_BASE 0
 680
 681 #elif (defined SLJIT_CONFIG_PPC && SLJIT_CONFIG_PPC)
 682
 683 #define SLJIT_NUMBER_OF_REGISTERS 23
 684 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 17
 685 #if (defined SLJIT_CONFIG_PPC_64 && SLJIT_CONFIG_PPC_64) || (defined _AIX)
 686 #define SLJIT_LOCALS_OFFSET_BASE ((6 + 8) * sizeof(sljit_sw))
 687 #elif (defined SLJIT_CONFIG_PPC_32 && SLJIT_CONFIG_PPC_32)
 688 /* Add +1 for double alignment. */
 689 #define SLJIT_LOCALS_OFFSET_BASE ((3 + 1) * sizeof(sljit_sw))
 690 #else
 691 #define SLJIT_LOCALS_OFFSET_BASE (3 * sizeof(sljit_sw))
 692 #endif /* SLJIT_CONFIG_PPC_64 || _AIX */
 693
 694 #elif (defined SLJIT_CONFIG_MIPS && SLJIT_CONFIG_MIPS)
 695
 696 #define SLJIT_NUMBER_OF_REGISTERS 21
 697 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 698 #if (defined SLJIT_CONFIG_MIPS_32 && SLJIT_CONFIG_MIPS_32)
 699 #define SLJIT_LOCALS_OFFSET_BASE (4 * sizeof(sljit_sw))
 700 #else
 701 #define SLJIT_LOCALS_OFFSET_BASE 0
 702 #endif
 703
 704 #elif (defined SLJIT_CONFIG_SPARC && SLJIT_CONFIG_SPARC)
 705
 706 #define SLJIT_NUMBER_OF_REGISTERS 18
 707 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 14
 708 #if (defined SLJIT_CONFIG_SPARC_32 && SLJIT_CONFIG_SPARC_32)
 709 /* saved registers (16), return struct pointer (1), space for 6 argument words (1),
 710    4th double arg (2), double alignment (1). */
 711 #define SLJIT_LOCALS_OFFSET_BASE ((16 + 1 + 6 + 2 + 1) * sizeof(sljit_sw))
 712 #endif
 713
 714 #elif (defined SLJIT_CONFIG_S390X && SLJIT_CONFIG_S390X)
 715
 716 /*
 717  * https://refspecs.linuxbase.org/ELF/zSeries/lzsabi0_zSeries.html#STACKFRAME
 718  *
 719  * 160
 720  *  .. FR6
 721  *  .. FR4
 722  *  .. FR2
 723  * 128 FR0
 724  * 120 R15 (used for SP)
 725  * 112 R14
 726  * 104 R13
 727  *  96 R12
 728  *  ..
 729  *  48 R6
 730  *  ..
 731  *  16 R2
 732  *   8 RESERVED
 733  *   0 SP
 734  */
 735 #define SLJIT_S390X_DEFAULT_STACK_FRAME_SIZE 160
 736
 737 #define SLJIT_NUMBER_OF_REGISTERS 12
 738 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 8
 739 #define SLJIT_LOCALS_OFFSET_BASE SLJIT_S390X_DEFAULT_STACK_FRAME_SIZE
 740
 741 #elif (defined SLJIT_CONFIG_UNSUPPORTED && SLJIT_CONFIG_UNSUPPORTED)
 742
 743 #define SLJIT_NUMBER_OF_REGISTERS 0
 744 #define SLJIT_NUMBER_OF_SAVED_REGISTERS 0
 745 #define SLJIT_LOCALS_OFFSET_BASE 0
 746
 747 #endif
 748
 749 #define SLJIT_LOCALS_OFFSET (SLJIT_LOCALS_OFFSET_BASE)
 750
 751 #define SLJIT_NUMBER_OF_SCRATCH_REGISTERS \
 752         (SLJIT_NUMBER_OF_REGISTERS - SLJIT_NUMBER_OF_SAVED_REGISTERS)
 753
 754 #define SLJIT_NUMBER_OF_FLOAT_REGISTERS 6
 755 #if (defined SLJIT_CONFIG_X86_64 && SLJIT_CONFIG_X86_64) && (defined _WIN64)
 756 #define SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS 1
 757 #else
 758 #define SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS 0
 759 #endif
 760
 761 #define SLJIT_NUMBER_OF_SCRATCH_FLOAT_REGISTERS \
 762         (SLJIT_NUMBER_OF_FLOAT_REGISTERS - SLJIT_NUMBER_OF_SAVED_FLOAT_REGISTERS)
 763
 764 /*************************************/
 765 /* Debug and verbose related macros. */
 766 /*************************************/
 767
 768 #if (defined SLJIT_DEBUG && SLJIT_DEBUG)
 769
 770 #if !defined(SLJIT_ASSERT) || !defined(SLJIT_UNREACHABLE)
 771
 772 /* SLJIT_HALT_PROCESS must halt the process. */
 773 #ifndef SLJIT_HALT_PROCESS
 774 #define SLJIT_HALT_PROCESS() \
 775         abort();
 776 #endif /* !SLJIT_HALT_PROCESS */
 777
 778 #endif /* !SLJIT_ASSERT || !SLJIT_UNREACHABLE */
 779
 780 /* Feel free to redefine these two macros. */
 781 #ifndef SLJIT_ASSERT
 782
 783 #define SLJIT_ASSERT(x) \
 784         do { \
 785                 if (SLJIT_UNLIKELY(!(x))) { \
 786                         printf("Assertion failed at " __FILE__ ":%d\n", __LINE__); \
 787                         SLJIT_HALT_PROCESS(); \
 788                 } \
 789         } while (0)
 790
 791 #endif /* !SLJIT_ASSERT */
 792
 793 #ifndef SLJIT_UNREACHABLE
 794
 795 #define SLJIT_UNREACHABLE() \
 796         do { \
 797                 printf("Should never been reached " __FILE__ ":%d\n", __LINE__); \
 798                 SLJIT_HALT_PROCESS(); \
 799         } while (0)
 800
 801 #endif /* !SLJIT_UNREACHABLE */
 802
 803 #else /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
 804
 805 /* Forcing empty, but valid statements. */
 806 #undef SLJIT_ASSERT
 807 #undef SLJIT_UNREACHABLE
 808
 809 #define SLJIT_ASSERT(x) \
 810         do { } while (0)
 811 #define SLJIT_UNREACHABLE() \
 812         do { } while (0)
 813
 814 #endif /* (defined SLJIT_DEBUG && SLJIT_DEBUG) */
 815
 816 #ifndef SLJIT_COMPILE_ASSERT
 817
 818 #define SLJIT_COMPILE_ASSERT(x, description) \
 819         switch(0) { case 0: case ((x) ? 1 : 0): break; }
 820
 821 #endif /* !SLJIT_COMPILE_ASSERT */
 822
 823 #ifdef __cplusplus
 824 } /* extern "C" */
 825 #endif
 826
 827 #endif /* SLJIT_CONFIG_INTERNAL_H_ */