1/* Header file for libgcc2.c. */ 2/* Copyright (C) 2000-2015 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16Under Section 7 of GPL version 3, you are granted additional 17permissions described in the GCC Runtime Library Exception, version 183.1, as published by the Free Software Foundation. 19 20You should have received a copy of the GNU General Public License and 21a copy of the GCC Runtime Library Exception along with this program; 22see 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 32extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t); 33extern void __clear_cache (char *, char *); 34extern void __eprintf (const char *, const char *, unsigned int, const char *) 35 __attribute__ ((__noreturn__)); 36 37#ifdef __LIBGCC_HAS_SF_MODE__ 38#define LIBGCC2_HAS_SF_MODE 1 39#else 40#define LIBGCC2_HAS_SF_MODE 0 41#endif 42 43#ifdef __LIBGCC_HAS_DF_MODE__ 44#define LIBGCC2_HAS_DF_MODE 1 45#else 46#define LIBGCC2_HAS_DF_MODE 0 47#endif 48 49#ifdef __LIBGCC_HAS_XF_MODE__ 50#define LIBGCC2_HAS_XF_MODE 1 51#else 52#define LIBGCC2_HAS_XF_MODE 0 53#endif 54 55#ifdef __LIBGCC_HAS_TF_MODE__ 56#define LIBGCC2_HAS_TF_MODE 1 57#else 58#define LIBGCC2_HAS_TF_MODE 0 59#endif 60 61#ifndef __LIBGCC_SF_MANT_DIG__ 62#if LIBGCC2_HAS_SF_MODE 63#error __LIBGCC_SF_MANT_DIG__ not defined 64#else 65#define __LIBGCC_SF_MANT_DIG__ 0 66#endif 67#endif 68 69#ifndef __LIBGCC_DF_MANT_DIG__ 70#if LIBGCC2_HAS_DF_MODE 71#error __LIBGCC_DF_MANT_DIG__ not defined 72#else 73#define __LIBGCC_DF_MANT_DIG__ 0 74#endif 75#endif 76 77#ifndef __LIBGCC_XF_MANT_DIG__ 78#if LIBGCC2_HAS_XF_MODE 79#error __LIBGCC_XF_MANT_DIG__ not defined 80#else 81#define __LIBGCC_XF_MANT_DIG__ 0 82#endif 83#endif 84 85#ifndef __LIBGCC_TF_MANT_DIG__ 86#if LIBGCC2_HAS_TF_MODE 87#error __LIBGCC_TF_MANT_DIG__ not defined 88#else 89#define __LIBGCC_TF_MANT_DIG__ 0 90#endif 91#endif 92 93/* FIXME: This #ifdef probably should be removed, ie. enable the test 94 for mips too. */ 95/* Don't use IBM Extended Double TFmode for TI->SF calculations. 96 The conversion from long double to float suffers from double 97 rounding, because we convert via double. In other cases, going 98 through the software fp routines is much slower than the fallback. */ 99#ifdef __powerpc__ 100#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE == 106) 101#elif defined(WIDEST_HARDWARE_FP_SIZE) 102#define AVOID_FP_TYPE_CONVERSION(SIZE) (SIZE > WIDEST_HARDWARE_FP_SIZE) 103#else 104#define AVOID_FP_TYPE_CONVERSION(SIZE) 0 105#endif 106 107/* In the first part of this file, we are interfacing to calls generated 108 by the compiler itself. These calls pass values into these routines 109 which have very specific modes (rather than very specific types), and 110 these compiler-generated calls also expect any return values to have 111 very specific modes (rather than very specific types). Thus, we need 112 to avoid using regular C language type names in this part of the file 113 because the sizes for those types can be configured to be anything. 114 Instead we use the following special type names. */ 115 116typedef int QItype __attribute__ ((mode (QI))); 117typedef unsigned int UQItype __attribute__ ((mode (QI))); 118typedef int HItype __attribute__ ((mode (HI))); 119typedef unsigned int UHItype __attribute__ ((mode (HI))); 120#if MIN_UNITS_PER_WORD > 1 121/* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1. */ 122typedef int SItype __attribute__ ((mode (SI))); 123typedef unsigned int USItype __attribute__ ((mode (SI))); 124#if __SIZEOF_LONG_LONG__ > 4 125/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2. */ 126typedef int DItype __attribute__ ((mode (DI))); 127typedef unsigned int UDItype __attribute__ ((mode (DI))); 128#if MIN_UNITS_PER_WORD > 4 129/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4. */ 130typedef int TItype __attribute__ ((mode (TI))); 131typedef unsigned int UTItype __attribute__ ((mode (TI))); 132#endif 133#endif 134#endif 135 136#if LIBGCC2_HAS_SF_MODE 137typedef float SFtype __attribute__ ((mode (SF))); 138typedef _Complex float SCtype __attribute__ ((mode (SC))); 139#endif 140#if LIBGCC2_HAS_DF_MODE 141typedef float DFtype __attribute__ ((mode (DF))); 142typedef _Complex float DCtype __attribute__ ((mode (DC))); 143#endif 144#if LIBGCC2_HAS_XF_MODE 145typedef float XFtype __attribute__ ((mode (XF))); 146typedef _Complex float XCtype __attribute__ ((mode (XC))); 147#endif 148#if LIBGCC2_HAS_TF_MODE 149typedef float TFtype __attribute__ ((mode (TF))); 150typedef _Complex float TCtype __attribute__ ((mode (TC))); 151#endif 152 153typedef int cmp_return_type __attribute__((mode (__libgcc_cmp_return__))); 154typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__))); 155 156/* Make sure that we don't accidentally use any normal C language built-in 157 type names in the first part of this file. Instead we want to use *only* 158 the type names defined above. The following macro definitions insure 159 that if we *do* accidentally use some normal C language built-in type name, 160 we will get a syntax error. */ 161 162#define char bogus_type 163#define short bogus_type 164#define int bogus_type 165#define long bogus_type 166#define unsigned bogus_type 167#define float bogus_type 168#define double bogus_type 169 170/* Versions prior to 3.4.4 were not taking into account the word size for 171 the 5 trapping arithmetic functions absv, addv, subv, mulv and negv. As 172 a consequence, the si and di variants were always and the only ones emitted. 173 To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is 174 defined on platforms where it makes sense to still have the si variants 175 emitted. As a bonus, their implementation is now correct. Note that the 176 same mechanism should have been implemented for the di variants, but it 177 turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC 178 if it existed. */ 179 180#if LIBGCC2_UNITS_PER_WORD == 8 181#define W_TYPE_SIZE (8 * BITS_PER_UNIT) 182#define Wtype DItype 183#define UWtype UDItype 184#define HWtype DItype 185#define UHWtype UDItype 186#define DWtype TItype 187#define UDWtype UTItype 188#ifdef LIBGCC2_GNU_PREFIX 189#define __NW(a,b) __gnu_ ## a ## di ## b 190#define __NDW(a,b) __gnu_ ## a ## ti ## b 191#else 192#define __NW(a,b) __ ## a ## di ## b 193#define __NDW(a,b) __ ## a ## ti ## b 194#endif 195#define COMPAT_SIMODE_TRAPPING_ARITHMETIC 196#elif LIBGCC2_UNITS_PER_WORD == 4 197#define W_TYPE_SIZE (4 * BITS_PER_UNIT) 198#define Wtype SItype 199#define UWtype USItype 200#define HWtype SItype 201#define UHWtype USItype 202#define DWtype DItype 203#define UDWtype UDItype 204#ifdef LIBGCC2_GNU_PREFIX 205#define __NW(a,b) __gnu_ ## a ## si ## b 206#define __NDW(a,b) __gnu_ ## a ## di ## b 207#else 208#define __NW(a,b) __ ## a ## si ## b 209#define __NDW(a,b) __ ## a ## di ## b 210#endif 211#elif LIBGCC2_UNITS_PER_WORD == 2 212#define W_TYPE_SIZE (2 * BITS_PER_UNIT) 213#define Wtype HItype 214#define UWtype UHItype 215#define HWtype HItype 216#define UHWtype UHItype 217#define DWtype SItype 218#define UDWtype USItype 219#ifdef LIBGCC2_GNU_PREFIX 220#define __NW(a,b) __gnu_ ## a ## hi ## b 221#define __NDW(a,b) __gnu_ ## a ## si ## b 222#else 223#define __NW(a,b) __ ## a ## hi ## b 224#define __NDW(a,b) __ ## a ## si ## b 225#endif 226#else 227#define W_TYPE_SIZE BITS_PER_UNIT 228#define Wtype QItype 229#define UWtype UQItype 230#define HWtype QItype 231#define UHWtype UQItype 232#define DWtype HItype 233#define UDWtype UHItype 234#ifdef LIBGCC2_GNU_PREFIX 235#define __NW(a,b) __gnu_ ## a ## qi ## b 236#define __NDW(a,b) __gnu_ ## a ## hi ## b 237#else 238#define __NW(a,b) __ ## a ## qi ## b 239#define __NDW(a,b) __ ## a ## hi ## b 240#endif 241#endif 242 243#ifdef LIBGCC2_GNU_PREFIX 244#define __N(a) __gnu_ ## a 245#else 246#define __N(a) __ ## a 247#endif 248#define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1)) 249#define Wtype_MIN (- Wtype_MAX - 1) 250 251#if W_TYPE_SIZE == 8 252# define Wtype_MAXp1_F 0x1p8f 253#elif W_TYPE_SIZE == 16 254# define Wtype_MAXp1_F 0x1p16f 255#elif W_TYPE_SIZE == 32 256# define Wtype_MAXp1_F 0x1p32f 257#elif W_TYPE_SIZE == 64 258# define Wtype_MAXp1_F 0x1p64f 259#else 260# error "expand the table" 261#endif 262 263#define __muldi3 __NDW(mul,3) 264#define __divdi3 __NDW(div,3) 265#define __udivdi3 __NDW(udiv,3) 266#define __moddi3 __NDW(mod,3) 267#define __umoddi3 __NDW(umod,3) 268#define __negdi2 __NDW(neg,2) 269#define __lshrdi3 __NDW(lshr,3) 270#define __ashldi3 __NDW(ashl,3) 271#define __ashrdi3 __NDW(ashr,3) 272#define __cmpdi2 __NDW(cmp,2) 273#define __ucmpdi2 __NDW(ucmp,2) 274#define __udivmoddi4 __NDW(udivmod,4) 275#define __fixunstfDI __NDW(fixunstf,) 276#define __fixtfdi __NDW(fixtf,) 277#define __fixunsxfDI __NDW(fixunsxf,) 278#define __fixxfdi __NDW(fixxf,) 279#define __fixunsdfDI __NDW(fixunsdf,) 280#define __fixdfdi __NDW(fixdf,) 281#define __fixunssfDI __NDW(fixunssf,) 282#define __fixsfdi __NDW(fixsf,) 283#define __floatdixf __NDW(float,xf) 284#define __floatditf __NDW(float,tf) 285#define __floatdidf __NDW(float,df) 286#define __floatdisf __NDW(float,sf) 287#define __floatundixf __NDW(floatun,xf) 288#define __floatunditf __NDW(floatun,tf) 289#define __floatundidf __NDW(floatun,df) 290#define __floatundisf __NDW(floatun,sf) 291#define __fixunsxfSI __NW(fixunsxf,) 292#define __fixunstfSI __NW(fixunstf,) 293#define __fixunsdfSI __NW(fixunsdf,) 294#define __fixunssfSI __NW(fixunssf,) 295 296#define __absvSI2 __NW(absv,2) 297#define __addvSI3 __NW(addv,3) 298#define __subvSI3 __NW(subv,3) 299#define __mulvSI3 __NW(mulv,3) 300#define __negvSI2 __NW(negv,2) 301#define __absvDI2 __NDW(absv,2) 302#define __addvDI3 __NDW(addv,3) 303#define __subvDI3 __NDW(subv,3) 304#define __mulvDI3 __NDW(mulv,3) 305#define __negvDI2 __NDW(negv,2) 306 307#define __ffsSI2 __NW(ffs,2) 308#define __clzSI2 __NW(clz,2) 309#define __ctzSI2 __NW(ctz,2) 310#define __clrsbSI2 __NW(clrsb,2) 311#define __popcountSI2 __NW(popcount,2) 312#define __paritySI2 __NW(parity,2) 313#define __ffsDI2 __NDW(ffs,2) 314#define __clzDI2 __NDW(clz,2) 315#define __ctzDI2 __NDW(ctz,2) 316#define __clrsbDI2 __NDW(clrsb,2) 317#define __popcountDI2 __NDW(popcount,2) 318#define __parityDI2 __NDW(parity,2) 319 320#define __clz_tab __N(clz_tab) 321#define __bswapsi2 __N(bswapsi2) 322#define __bswapdi2 __N(bswapdi2) 323#define __udiv_w_sdiv __N(udiv_w_sdiv) 324#define __clear_cache __N(clear_cache) 325#define __enable_execute_stack __N(enable_execute_stack) 326 327#ifndef __powisf2 328#define __powisf2 __N(powisf2) 329#endif 330#ifndef __powidf2 331#define __powidf2 __N(powidf2) 332#endif 333#ifndef __powitf2 334#define __powitf2 __N(powitf2) 335#endif 336#ifndef __powixf2 337#define __powixf2 __N(powixf2) 338#endif 339#ifndef __mulsc3 340#define __mulsc3 __N(mulsc3) 341#endif 342#ifndef __muldc3 343#define __muldc3 __N(muldc3) 344#endif 345#ifndef __mulxc3 346#define __mulxc3 __N(mulxc3) 347#endif 348#ifndef __multc3 349#define __multc3 __N(multc3) 350#endif 351#ifndef __divsc3 352#define __divsc3 __N(divsc3) 353#endif 354#ifndef __divdc3 355#define __divdc3 __N(divdc3) 356#endif 357#ifndef __divxc3 358#define __divxc3 __N(divxc3) 359#endif 360#ifndef __divtc3 361#define __divtc3 __N(divtc3) 362#endif 363 364extern DWtype __muldi3 (DWtype, DWtype); 365extern DWtype __divdi3 (DWtype, DWtype); 366extern UDWtype __udivdi3 (UDWtype, UDWtype); 367extern UDWtype __umoddi3 (UDWtype, UDWtype); 368extern DWtype __moddi3 (DWtype, DWtype); 369 370/* __udivmoddi4 is static inline when building other libgcc2 portions. */ 371#if (!defined (L_udivdi3) && !defined (L_divdi3) && \ 372 !defined (L_umoddi3) && !defined (L_moddi3)) 373extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *); 374#endif 375 376/* __negdi2 is static inline when building other libgcc2 portions. */ 377#if !defined(L_divdi3) && !defined(L_moddi3) 378extern DWtype __negdi2 (DWtype); 379#endif 380 381extern DWtype __lshrdi3 (DWtype, shift_count_type); 382extern DWtype __ashldi3 (DWtype, shift_count_type); 383extern DWtype __ashrdi3 (DWtype, shift_count_type); 384 385/* __udiv_w_sdiv is static inline when building other libgcc2 portions. */ 386#if (!defined(L_udivdi3) && !defined(L_divdi3) && \ 387 !defined(L_umoddi3) && !defined(L_moddi3)) 388extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype); 389#endif 390 391extern cmp_return_type __cmpdi2 (DWtype, DWtype); 392extern cmp_return_type __ucmpdi2 (DWtype, DWtype); 393 394#if MIN_UNITS_PER_WORD > 1 395extern SItype __bswapsi2 (SItype); 396#endif 397#if __SIZEOF_LONG_LONG__ > 4 398extern DItype __bswapdi2 (DItype); 399#endif 400 401extern Wtype __absvSI2 (Wtype); 402extern Wtype __addvSI3 (Wtype, Wtype); 403extern Wtype __subvSI3 (Wtype, Wtype); 404extern Wtype __mulvSI3 (Wtype, Wtype); 405extern Wtype __negvSI2 (Wtype); 406extern DWtype __absvDI2 (DWtype); 407extern DWtype __addvDI3 (DWtype, DWtype); 408extern DWtype __subvDI3 (DWtype, DWtype); 409extern DWtype __mulvDI3 (DWtype, DWtype); 410extern DWtype __negvDI2 (DWtype); 411 412#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC 413#define __absvsi2 __N(absvsi2) 414#define __negvsi2 __N(negvsi2) 415#define __addvsi3 __N(addvsi3) 416#define __subvsi3 __N(subvsi3) 417#define __mulvsi3 __N(mulvsi3) 418 419extern SItype __absvsi2 (SItype); 420extern SItype __addvsi3 (SItype, SItype); 421extern SItype __subvsi3 (SItype, SItype); 422extern SItype __mulvsi3 (SItype, SItype); 423extern SItype __negvsi2 (SItype); 424#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */ 425 426#undef int 427#if LIBGCC2_HAS_SF_MODE 428extern DWtype __fixsfdi (SFtype); 429extern SFtype __floatdisf (DWtype); 430extern SFtype __floatundisf (UDWtype); 431extern UWtype __fixunssfSI (SFtype); 432extern UDWtype __fixunssfDI (SFtype); 433extern SFtype __powisf2 (SFtype, int); 434extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype); 435extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype); 436#endif 437#if LIBGCC2_HAS_DF_MODE 438extern DWtype __fixdfdi (DFtype); 439extern DFtype __floatdidf (DWtype); 440extern DFtype __floatundidf (UDWtype); 441extern UWtype __fixunsdfSI (DFtype); 442extern UDWtype __fixunsdfDI (DFtype); 443extern DFtype __powidf2 (DFtype, int); 444extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype); 445extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype); 446#endif 447 448#if LIBGCC2_HAS_XF_MODE 449extern DWtype __fixxfdi (XFtype); 450extern UDWtype __fixunsxfDI (XFtype); 451extern XFtype __floatdixf (DWtype); 452extern XFtype __floatundixf (UDWtype); 453extern UWtype __fixunsxfSI (XFtype); 454extern XFtype __powixf2 (XFtype, int); 455extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype); 456extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype); 457#endif 458 459#if LIBGCC2_HAS_TF_MODE 460extern UDWtype __fixunstfDI (TFtype); 461extern DWtype __fixtfdi (TFtype); 462extern TFtype __floatditf (DWtype); 463extern TFtype __floatunditf (UDWtype); 464extern TFtype __powitf2 (TFtype, int); 465extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype); 466extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype); 467#endif 468#define int bogus_type 469 470/* DWstructs are pairs of Wtype values in the order determined by 471 __BYTE_ORDER__. */ 472 473#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__ 474 struct DWstruct {Wtype high, low;}; 475#else 476 struct DWstruct {Wtype low, high;}; 477#endif 478 479/* We need this union to unpack/pack DImode values, since we don't have 480 any arithmetic yet. Incoming DImode parameters are stored into the 481 `ll' field, and the unpacked result is read from the struct `s'. */ 482 483typedef union 484{ 485 struct DWstruct s; 486 DWtype ll; 487} DWunion; 488 489/* Defined for L_popcount_tab. Exported here because some targets may 490 want to use it for their own versions of the __popcount builtins. */ 491extern const UQItype __popcount_tab[256]; 492 493/* Defined for L_clz. Exported here because some targets may want to use 494 it for their own versions of the __clz builtins. It contains the bit 495 position of the first set bit for the numbers 0 - 255. This avoids the 496 need for a separate table for the __ctz builtins. */ 497extern const UQItype __clz_tab[256]; 498 499#include "longlong.h" 500 501#undef int 502extern int __clzDI2 (UDWtype); 503extern int __clzSI2 (UWtype); 504extern int __ctzSI2 (UWtype); 505extern int __ctzDI2 (UDWtype); 506extern int __clrsbSI2 (Wtype); 507extern int __clrsbDI2 (DWtype); 508extern int __ffsSI2 (UWtype); 509extern int __ffsDI2 (DWtype); 510extern int __popcountSI2 (UWtype); 511extern int __popcountDI2 (UDWtype); 512extern int __paritySI2 (UWtype); 513extern int __parityDI2 (UDWtype); 514#define int bogus_type 515 516extern void __enable_execute_stack (void *); 517 518#ifndef HIDE_EXPORTS 519#pragma GCC visibility pop 520#endif 521 522#endif /* ! GCC_LIBGCC2_H */ 523