1 /* Header file for libgcc2.c. */ 2 /* Copyright (C) 2000-2014 Free Software Foundation, Inc. 3 4 This file is part of GCC. 5 6 GCC is free software; you can redistribute it and/or modify it under 7 the terms of the GNU General Public License as published by the Free 8 Software Foundation; either version 3, or (at your option) any later 9 version. 10 11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12 WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 for more details. 15 16 Under Section 7 of GPL version 3, you are granted additional 17 permissions described in the GCC Runtime Library Exception, version 18 3.1, as published by the Free Software Foundation. 19 20 You should have received a copy of the GNU General Public License and 21 a copy of the GCC Runtime Library Exception along with this program; 22 see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 <http://www.gnu.org/licenses/>. */ 24 25 #ifndef GCC_LIBGCC2_H 26 #define GCC_LIBGCC2_H 27 28 #ifndef HIDE_EXPORTS 29 #pragma GCC visibility push(default) 30 #endif 31 32 extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t); 33 extern void __clear_cache (char *, char *); 34 extern void __eprintf (const char *, const char *, unsigned int, const char *) 35 __attribute__ ((__noreturn__)); 36 37 #ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE 38 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE 39 #endif 40 41 #ifndef LIBGCC2_HAS_SF_MODE 42 #define LIBGCC2_HAS_SF_MODE (BITS_PER_UNIT == 8) 43 #endif 44 45 #ifndef LIBGCC2_HAS_DF_MODE 46 #define LIBGCC2_HAS_DF_MODE \ 47 (BITS_PER_UNIT == 8 \ 48 && (__SIZEOF_DOUBLE__ * __CHAR_BIT__ == 64 \ 49 || LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64)) 50 #endif 51 52 #ifndef LIBGCC2_HAS_XF_MODE 53 #define LIBGCC2_HAS_XF_MODE \ 54 (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80) 55 #endif 56 57 #ifndef LIBGCC2_HAS_TF_MODE 58 #define LIBGCC2_HAS_TF_MODE \ 59 (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128) 60 #endif 61 62 #ifndef SF_SIZE 63 #if LIBGCC2_HAS_SF_MODE 64 #define SF_SIZE FLT_MANT_DIG 65 #else 66 #define SF_SIZE 0 67 #endif 68 #endif 69 70 #ifndef DF_SIZE 71 #if LIBGCC2_HAS_DF_MODE 72 #if __SIZEOF_DOUBLE__ * __CHAR_BIT__ == 64 73 #define DF_SIZE DBL_MANT_DIG 74 #elif LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64 75 #define DF_SIZE LDBL_MANT_DIG 76 #else 77 #define DF_SIZE 0 78 #endif 79 #else 80 #define DF_SIZE 0 81 #endif 82 #endif 83 84 #ifndef XF_SIZE 85 #if LIBGCC2_HAS_XF_MODE 86 #define XF_SIZE LDBL_MANT_DIG 87 #else 88 #define XF_SIZE 0 89 #endif 90 #endif 91 92 #ifndef TF_SIZE 93 #if LIBGCC2_HAS_TF_MODE 94 #define TF_SIZE LDBL_MANT_DIG 95 #else 96 #define TF_SIZE 0 97 #endif 98 #endif 99 100 /* FIXME: This #ifdef probably should be removed, ie. enable the test 101 for mips too. */ 102 /* Don't use IBM Extended Double TFmode for TI->SF calculations. 103 The conversion from long double to float suffers from double 104 rounding, because we convert via double. In other cases, going 105 through the software fp routines is much slower than the fallback. */ 106 #ifdef __powerpc__ 107 #define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106) 108 #elif defined(WIDEST_HARDWARE_FP_SIZE) 109 #define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE) 110 #else 111 #define AVOID_FP_TYPE_CONVERSION(SIZE) 0 112 #endif 113 114 /* In the first part of this file, we are interfacing to calls generated 115 by the compiler itself. These calls pass values into these routines 116 which have very specific modes (rather than very specific types), and 117 these compiler-generated calls also expect any return values to have 118 very specific modes (rather than very specific types). Thus, we need 119 to avoid using regular C language type names in this part of the file 120 because the sizes for those types can be configured to be anything. 121 Instead we use the following special type names. */ 122 123 typedef int QItype __attribute__ ((mode (QI))); 124 typedef unsigned int UQItype __attribute__ ((mode (QI))); 125 typedef int HItype __attribute__ ((mode (HI))); 126 typedef unsigned int UHItype __attribute__ ((mode (HI))); 127 #if MIN_UNITS_PER_WORD > 1 128 /* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */ 129 typedef int SItype __attribute__ ((mode (SI))); 130 typedef unsigned int USItype __attribute__ ((mode (SI))); 131 #if __SIZEOF_LONG_LONG__ > 4 132 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */ 133 typedef int DItype __attribute__ ((mode (DI))); 134 typedef unsigned int UDItype __attribute__ ((mode (DI))); 135 #if MIN_UNITS_PER_WORD > 4 136 /* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */ 137 typedef int TItype __attribute__ ((mode (TI))); 138 typedef unsigned int UTItype __attribute__ ((mode (TI))); 139 #endif 140 #endif 141 #endif 142 143 #if LIBGCC2_HAS_SF_MODE 144 typedef float SFtype __attribute__ ((mode (SF))); 145 typedef _Complex float SCtype __attribute__ ((mode (SC))); 146 #endif 147 #if LIBGCC2_HAS_DF_MODE 148 typedef float DFtype __attribute__ ((mode (DF))); 149 typedef _Complex float DCtype __attribute__ ((mode (DC))); 150 #endif 151 #if LIBGCC2_HAS_XF_MODE 152 typedef float XFtype __attribute__ ((mode (XF))); 153 typedef _Complex float XCtype __attribute__ ((mode (XC))); 154 #endif 155 #if LIBGCC2_HAS_TF_MODE 156 typedef float TFtype __attribute__ ((mode (TF))); 157 typedef _Complex float TCtype __attribute__ ((mode (TC))); 158 #endif 159 160 typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__))); 161 typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__))); 162 163 /* Make sure that we don't accidentally use any normal C language built-in 164 type names in the first part of this file. Instead we want to use *only* 165 the type names defined above. The following macro definitions insure 166 that if we *do* accidentally use some normal C language built-in type name, 167 we will get a syntax error. */ 168 169 #define char bogus_type 170 #define short bogus_type 171 #define int bogus_type 172 #define long bogus_type 173 #define unsigned bogus_type 174 #define float bogus_type 175 #define double bogus_type 176 177 /* Versions prior to 3.4.4 were not taking into account the word size for 178 the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As 179 a consequence, the si and di variants were always and the only ones emitted. 180 To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is 181 defined on platforms where it makes sense to still have the si variants 182 emitted. As a bonus, their implementation is now correct. Note that the 183 same mechanism should have been implemented for the di variants, but it 184 turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC 185 if it existed. */ 186 187 #if LIBGCC2_UNITS_PER_WORD == 8 188 #define W_TYPE_SIZE (8 * BITS_PER_UNIT) 189 #define Wtype DItype 190 #define UWtype UDItype 191 #define HWtype DItype 192 #define UHWtype UDItype 193 #define DWtype TItype 194 #define UDWtype UTItype 195 #ifdef LIBGCC2_GNU_PREFIX 196 #define __NW(a,b) __gnu_ ## a ## di ## b 197 #define __NDW(a,b) __gnu_ ## a ## ti ## b 198 #else 199 #define __NW(a,b) __ ## a ## di ## b 200 #define __NDW(a,b) __ ## a ## ti ## b 201 #endif 202 #define COMPAT_SIMODE_TRAPPING_ARITHMETIC 203 #elif LIBGCC2_UNITS_PER_WORD == 4 204 #define W_TYPE_SIZE (4 * BITS_PER_UNIT) 205 #define Wtype SItype 206 #define UWtype USItype 207 #define HWtype SItype 208 #define UHWtype USItype 209 #define DWtype DItype 210 #define UDWtype UDItype 211 #ifdef LIBGCC2_GNU_PREFIX 212 #define __NW(a,b) __gnu_ ## a ## si ## b 213 #define __NDW(a,b) __gnu_ ## a ## di ## b 214 #else 215 #define __NW(a,b) __ ## a ## si ## b 216 #define __NDW(a,b) __ ## a ## di ## b 217 #endif 218 #elif LIBGCC2_UNITS_PER_WORD == 2 219 #define W_TYPE_SIZE (2 * BITS_PER_UNIT) 220 #define Wtype HItype 221 #define UWtype UHItype 222 #define HWtype HItype 223 #define UHWtype UHItype 224 #define DWtype SItype 225 #define UDWtype USItype 226 #ifdef LIBGCC2_GNU_PREFIX 227 #define __NW(a,b) __gnu_ ## a ## hi ## b 228 #define __NDW(a,b) __gnu_ ## a ## si ## b 229 #else 230 #define __NW(a,b) __ ## a ## hi ## b 231 #define __NDW(a,b) __ ## a ## si ## b 232 #endif 233 #else 234 #define W_TYPE_SIZE BITS_PER_UNIT 235 #define Wtype QItype 236 #define UWtype UQItype 237 #define HWtype QItype 238 #define UHWtype UQItype 239 #define DWtype HItype 240 #define UDWtype UHItype 241 #ifdef LIBGCC2_GNU_PREFIX 242 #define __NW(a,b) __gnu_ ## a ## qi ## b 243 #define __NDW(a,b) __gnu_ ## a ## hi ## b 244 #else 245 #define __NW(a,b) __ ## a ## qi ## b 246 #define __NDW(a,b) __ ## a ## hi ## b 247 #endif 248 #endif 249 250 #ifdef LIBGCC2_GNU_PREFIX 251 #define __N(a) __gnu_ ## a 252 #else 253 #define __N(a) __ ## a 254 #endif 255 #define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1)) 256 #define Wtype_MIN (- Wtype_MAX - 1) 257 258 #if W_TYPE_SIZE == 8 259 # define Wtype_MAXp1_F 0x1p8f 260 #elif W_TYPE_SIZE == 16 261 # define Wtype_MAXp1_F 0x1p16f 262 #elif W_TYPE_SIZE == 32 263 # define Wtype_MAXp1_F 0x1p32f 264 #elif W_TYPE_SIZE == 64 265 # define Wtype_MAXp1_F 0x1p64f 266 #else 267 # error "expand the table" 268 #endif 269 270 #define __muldi3 __NDW(mul,3) 271 #define __divdi3 __NDW(div,3) 272 #define __udivdi3 __NDW(udiv,3) 273 #define __moddi3 __NDW(mod,3) 274 #define __umoddi3 __NDW(umod,3) 275 #define __negdi2 __NDW(neg,2) 276 #define __lshrdi3 __NDW(lshr,3) 277 #define __ashldi3 __NDW(ashl,3) 278 #define __ashrdi3 __NDW(ashr,3) 279 #define __cmpdi2 __NDW(cmp,2) 280 #define __ucmpdi2 __NDW(ucmp,2) 281 #define __udivmoddi4 __NDW(udivmod,4) 282 #define __fixunstfDI __NDW(fixunstf,) 283 #define __fixtfdi __NDW(fixtf,) 284 #define __fixunsxfDI __NDW(fixunsxf,) 285 #define __fixxfdi __NDW(fixxf,) 286 #define __fixunsdfDI __NDW(fixunsdf,) 287 #define __fixdfdi __NDW(fixdf,) 288 #define __fixunssfDI __NDW(fixunssf,) 289 #define __fixsfdi __NDW(fixsf,) 290 #define __floatdixf __NDW(float,xf) 291 #define __floatditf __NDW(float,tf) 292 #define __floatdidf __NDW(float,df) 293 #define __floatdisf __NDW(float,sf) 294 #define __floatundixf __NDW(floatun,xf) 295 #define __floatunditf __NDW(floatun,tf) 296 #define __floatundidf __NDW(floatun,df) 297 #define __floatundisf __NDW(floatun,sf) 298 #define __fixunsxfSI __NW(fixunsxf,) 299 #define __fixunstfSI __NW(fixunstf,) 300 #define __fixunsdfSI __NW(fixunsdf,) 301 #define __fixunssfSI __NW(fixunssf,) 302 303 #define __absvSI2 __NW(absv,2) 304 #define __addvSI3 __NW(addv,3) 305 #define __subvSI3 __NW(subv,3) 306 #define __mulvSI3 __NW(mulv,3) 307 #define __negvSI2 __NW(negv,2) 308 #define __absvDI2 __NDW(absv,2) 309 #define __addvDI3 __NDW(addv,3) 310 #define __subvDI3 __NDW(subv,3) 311 #define __mulvDI3 __NDW(mulv,3) 312 #define __negvDI2 __NDW(negv,2) 313 314 #define __ffsSI2 __NW(ffs,2) 315 #define __clzSI2 __NW(clz,2) 316 #define __ctzSI2 __NW(ctz,2) 317 #define __clrsbSI2 __NW(clrsb,2) 318 #define __popcountSI2 __NW(popcount,2) 319 #define __paritySI2 __NW(parity,2) 320 #define __ffsDI2 __NDW(ffs,2) 321 #define __clzDI2 __NDW(clz,2) 322 #define __ctzDI2 __NDW(ctz,2) 323 #define __clrsbDI2 __NDW(clrsb,2) 324 #define __popcountDI2 __NDW(popcount,2) 325 #define __parityDI2 __NDW(parity,2) 326 327 #define __clz_tab __N(clz_tab) 328 #define __bswapsi2 __N(bswapsi2) 329 #define __bswapdi2 __N(bswapdi2) 330 #define __udiv_w_sdiv __N(udiv_w_sdiv) 331 #define __clear_cache __N(clear_cache) 332 #define __enable_execute_stack __N(enable_execute_stack) 333 334 #ifndef __powisf2 335 #define __powisf2 __N(powisf2) 336 #endif 337 #ifndef __powidf2 338 #define __powidf2 __N(powidf2) 339 #endif 340 #ifndef __powitf2 341 #define __powitf2 __N(powitf2) 342 #endif 343 #ifndef __powixf2 344 #define __powixf2 __N(powixf2) 345 #endif 346 #ifndef __mulsc3 347 #define __mulsc3 __N(mulsc3) 348 #endif 349 #ifndef __muldc3 350 #define __muldc3 __N(muldc3) 351 #endif 352 #ifndef __mulxc3 353 #define __mulxc3 __N(mulxc3) 354 #endif 355 #ifndef __multc3 356 #define __multc3 __N(multc3) 357 #endif 358 #ifndef __divsc3 359 #define __divsc3 __N(divsc3) 360 #endif 361 #ifndef __divdc3 362 #define __divdc3 __N(divdc3) 363 #endif 364 #ifndef __divxc3 365 #define __divxc3 __N(divxc3) 366 #endif 367 #ifndef __divtc3 368 #define __divtc3 __N(divtc3) 369 #endif 370 371 extern DWtype __muldi3 (DWtype, DWtype); 372 extern DWtype __divdi3 (DWtype, DWtype); 373 extern UDWtype __udivdi3 (UDWtype, UDWtype); 374 extern UDWtype __umoddi3 (UDWtype, UDWtype); 375 extern DWtype __moddi3 (DWtype, DWtype); 376 377 /* __udivmoddi4 is static inline when building other libgcc2 portions. */ 378 #if (!defined (L_udivdi3) && !defined (L_divdi3) && \ 379 !defined (L_umoddi3) && !defined (L_moddi3)) 380 extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *); 381 #endif 382 383 /* __negdi2 is static inline when building other libgcc2 portions. */ 384 #if !defined(L_divdi3) && !defined(L_moddi3) 385 extern DWtype __negdi2 (DWtype); 386 #endif 387 388 extern DWtype __lshrdi3 (DWtype, shift_count_type); 389 extern DWtype __ashldi3 (DWtype, shift_count_type); 390 extern DWtype __ashrdi3 (DWtype, shift_count_type); 391 392 /* __udiv_w_sdiv is static inline when building other libgcc2 portions. */ 393 #if (!defined(L_udivdi3) && !defined(L_divdi3) && \ 394 !defined(L_umoddi3) && !defined(L_moddi3)) 395 extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype); 396 #endif 397 398 extern cmp_return_type __cmpdi2 (DWtype, DWtype); 399 extern cmp_return_type __ucmpdi2 (DWtype, DWtype); 400 401 #if MIN_UNITS_PER_WORD > 1 402 extern SItype __bswapsi2 (SItype); 403 #endif 404 #if __SIZEOF_LONG_LONG__ > 4 405 extern DItype __bswapdi2 (DItype); 406 #endif 407 408 extern Wtype __absvSI2 (Wtype); 409 extern Wtype __addvSI3 (Wtype, Wtype); 410 extern Wtype __subvSI3 (Wtype, Wtype); 411 extern Wtype __mulvSI3 (Wtype, Wtype); 412 extern Wtype __negvSI2 (Wtype); 413 extern DWtype __absvDI2 (DWtype); 414 extern DWtype __addvDI3 (DWtype, DWtype); 415 extern DWtype __subvDI3 (DWtype, DWtype); 416 extern DWtype __mulvDI3 (DWtype, DWtype); 417 extern DWtype __negvDI2 (DWtype); 418 419 #ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC 420 #define __absvsi2 __N(absvsi2) 421 #define __negvsi2 __N(negvsi2) 422 #define __addvsi3 __N(addvsi3) 423 #define __subvsi3 __N(subvsi3) 424 #define __mulvsi3 __N(mulvsi3) 425 426 extern SItype __absvsi2 (SItype); 427 extern SItype __addvsi3 (SItype, SItype); 428 extern SItype __subvsi3 (SItype, SItype); 429 extern SItype __mulvsi3 (SItype, SItype); 430 extern SItype __negvsi2 (SItype); 431 #endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */ 432 433 #undef int 434 #if LIBGCC2_HAS_SF_MODE 435 extern DWtype __fixsfdi (SFtype); 436 extern SFtype __floatdisf (DWtype); 437 extern SFtype __floatundisf (UDWtype); 438 extern UWtype __fixunssfSI (SFtype); 439 extern UDWtype __fixunssfDI (SFtype); 440 extern SFtype __powisf2 (SFtype, int); 441 extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype); 442 extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype); 443 #endif 444 #if LIBGCC2_HAS_DF_MODE 445 extern DWtype __fixdfdi (DFtype); 446 extern DFtype __floatdidf (DWtype); 447 extern DFtype __floatundidf (UDWtype); 448 extern UWtype __fixunsdfSI (DFtype); 449 extern UDWtype __fixunsdfDI (DFtype); 450 extern DFtype __powidf2 (DFtype, int); 451 extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype); 452 extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype); 453 #endif 454 455 #if LIBGCC2_HAS_XF_MODE 456 extern DWtype __fixxfdi (XFtype); 457 extern UDWtype __fixunsxfDI (XFtype); 458 extern XFtype __floatdixf (DWtype); 459 extern XFtype __floatundixf (UDWtype); 460 extern UWtype __fixunsxfSI (XFtype); 461 extern XFtype __powixf2 (XFtype, int); 462 extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype); 463 extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype); 464 #endif 465 466 #if LIBGCC2_HAS_TF_MODE 467 extern UDWtype __fixunstfDI (TFtype); 468 extern DWtype __fixtfdi (TFtype); 469 extern TFtype __floatditf (DWtype); 470 extern TFtype __floatunditf (UDWtype); 471 extern TFtype __powitf2 (TFtype, int); 472 extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype); 473 extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype); 474 #endif 475 #define int bogus_type 476 477 /* DWstructs are pairs of Wtype values in the order determined by 478 __BYTE_ORDER__. */ 479 480 #if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ 481 struct DWstruct {Wtype high, low;}; 482 #else 483 struct DWstruct {Wtype low, high;}; 484 #endif 485 486 /* We need this union to unpack/pack DImode values, since we don't have 487 any arithmetic yet. Incoming DImode parameters are stored into the 488 `ll' field, and the unpacked result is read from the struct `s'. */ 489 490 typedef union 491 { 492 struct DWstruct s; 493 DWtype ll; 494 } DWunion; 495 496 /* Defined for L_popcount_tab. Exported here because some targets may 497 want to use it for their own versions of the __popcount builtins. */ 498 extern const UQItype __popcount_tab[256]; 499 500 /* Defined for L_clz. Exported here because some targets may want to use 501 it for their own versions of the __clz builtins. It contains the bit 502 position of the first set bit for the numbers 0 - 255. This avoids the 503 need for a separate table for the __ctz builtins. */ 504 extern const UQItype __clz_tab[256]; 505 506 #include "longlong.h" 507 508 #undef int 509 extern int __clzDI2 (UDWtype); 510 extern int __clzSI2 (UWtype); 511 extern int __ctzSI2 (UWtype); 512 extern int __ctzDI2 (UDWtype); 513 extern int __clrsbSI2 (Wtype); 514 extern int __clrsbDI2 (DWtype); 515 extern int __ffsSI2 (UWtype); 516 extern int __ffsDI2 (DWtype); 517 extern int __popcountSI2 (UWtype); 518 extern int __popcountDI2 (UDWtype); 519 extern int __paritySI2 (UWtype); 520 extern int __parityDI2 (UDWtype); 521 #define int bogus_type 522 523 extern void __enable_execute_stack (void *); 524 525 #ifndef HIDE_EXPORTS 526 #pragma GCC visibility pop 527 #endif 528 529 #endif /* ! GCC_LIBGCC2_H */ 530