1 /* 2 Copyright (C) 1991 DJ Delorie 3 All rights reserved. 4 5 Redistribution, modification, and use in source and binary forms is permitted 6 provided that the above copyright notice and following paragraph are 7 duplicated in all such forms. 8 9 This file is distributed WITHOUT ANY WARRANTY; without even the implied 10 warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 */ 12 13 _BEGIN_STD_C 14 15 #if defined(__or1k__) || defined(__or1knd__) 16 /* 17 * r1, r2, r9, r14, r16 .. r30, SR. 18 */ 19 #define _JBLEN 13 20 #define _JBTYPE unsigned long 21 #endif 22 23 #if defined(__arm__) || defined(__thumb__) 24 /* 25 * All callee preserved registers: 26 * core registers: 27 * r4 - r10, fp, sp, lr 28 * VFP registers (architectural support dependent): 29 * d8 - d15 30 */ 31 #define _JBLEN 20 32 #define _JBTYPE long long 33 #endif 34 35 #if defined(__aarch64__) 36 #define _JBLEN 22 37 #define _JBTYPE long long 38 #endif 39 40 #if defined(__AVR__) 41 #define _JBLEN 24 42 #endif 43 44 #ifdef __sparc__ 45 /* 46 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext). 47 * All else recovered by under/over(flow) handling. 48 */ 49 #define _JBLEN 13 50 #endif 51 52 #ifdef __BFIN__ 53 #define _JBLEN 40 54 #endif 55 56 #ifdef __epiphany__ 57 /* All callee preserved registers: r4-r10,fp, sp, lr,r15, r32-r39 */ 58 #define _JBTYPE long long 59 #define _JBLEN 10 60 #endif 61 62 /* necv70 was 9 as well. */ 63 64 #if defined(__m68k__) || defined(__mc68000__) 65 /* 66 * onsstack,sigmask,sp,pc,psl,d2-d7,a2-a6, 67 * fp2-fp7 for 68881. 68 * All else recovered by under/over(flow) handling. 69 */ 70 #define _JBLEN 34 71 #endif 72 73 #if defined(__mc68hc11__) || defined(__mc68hc12__) || defined(__mc68hc1x__) 74 /* 75 * D, X, Y are not saved. 76 * Only take into account the pseudo soft registers (max 32). 77 */ 78 #define _JBLEN 32 79 #endif 80 81 #ifdef __nds32__ 82 /* 17 words for GPRs, 83 1 word for $fpcfg.freg and 30 words for FPUs 84 Reserved 2 words for aligement-adjustment. When storeing double-precision 85 floating-point register into memory, the address has to be 86 double-word-aligned. 87 Check libc/machine/nds32/setjmp.S for more information. */ 88 #if __NDS32_EXT_FPU_SP__ || __NDS32_EXT_FPU_DP__ 89 #define _JBLEN 50 90 #else 91 #define _JBLEN 18 92 #endif 93 #endif 94 95 #if defined(__Z8001__) || defined(__Z8002__) 96 /* 16 regs + pc */ 97 #define _JBLEN 20 98 #endif 99 100 #ifdef _AM29K 101 /* 102 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext). 103 * All else recovered by under/over(flow) handling. 104 */ 105 #define _JBLEN 9 106 #endif 107 108 #ifdef __i386__ 109 # if defined(__CYGWIN__) && !defined (_JBLEN) 110 # define _JBLEN (13 * 4) 111 # elif defined(__unix__) || defined(__rtems__) 112 # define _JBLEN 9 113 # elif defined(__iamcu__) 114 /* Intel MCU jmp_buf only covers callee-saved registers. */ 115 # define _JBLEN 6 116 # else 117 # include "setjmp-dj.h" 118 # endif 119 #endif 120 121 #ifdef __x86_64__ 122 # ifdef __CYGWIN__ 123 # define _JBTYPE long 124 # define _JBLEN 32 125 # else 126 # define _JBTYPE long long 127 # define _JBLEN 8 128 # endif 129 #endif 130 131 #ifdef __i960__ 132 #define _JBLEN 35 133 #endif 134 135 #ifdef __M32R__ 136 /* Only 8 words are currently needed. 10 gives us some slop if we need 137 to expand. */ 138 #define _JBLEN 10 139 #endif 140 141 #ifdef __mips__ 142 # if defined(__mips64) 143 # define _JBTYPE long long 144 # endif 145 # ifdef __mips_soft_float 146 # define _JBLEN 11 147 # else 148 # define _JBLEN 23 149 # endif 150 #endif 151 152 #ifdef __m88000__ 153 #define _JBLEN 21 154 #endif 155 156 #ifdef __H8300__ 157 #define _JBLEN 5 158 #define _JBTYPE int 159 #endif 160 161 #ifdef __H8300H__ 162 /* same as H8/300 but registers are twice as big */ 163 #define _JBLEN 5 164 #define _JBTYPE long 165 #endif 166 167 #if defined (__H8300S__) || defined (__H8300SX__) 168 /* same as H8/300 but registers are twice as big */ 169 #define _JBLEN 5 170 #define _JBTYPE long 171 #endif 172 173 #ifdef __H8500__ 174 #define _JBLEN 4 175 #endif 176 177 #ifdef __sh__ 178 #if __SH5__ 179 #define _JBLEN 50 180 #define _JBTYPE long long 181 #else 182 #define _JBLEN 20 183 #endif /* __SH5__ */ 184 #endif 185 186 #ifdef __v800 187 #define _JBLEN 28 188 #endif 189 190 #ifdef __PPC__ 191 #ifdef __powerpc64__ 192 #ifdef __ALTIVEC__ 193 #define _JBLEN 70 194 #else 195 #define _JBLEN 43 196 #endif 197 #else 198 #ifdef __ALTIVEC__ 199 #define _JBLEN 64 200 #else 201 #define _JBLEN 32 202 #endif 203 #endif 204 #define _JBTYPE double 205 #endif 206 207 #ifdef __MICROBLAZE__ 208 #define _JBLEN 20 209 #define _JBTYPE unsigned int 210 #endif 211 212 #ifdef __hppa__ 213 /* %r30, %r2-%r18, %r27, pad, %fr12-%fr15. 214 Note space exists for the FP registers, but they are not 215 saved. */ 216 #define _JBLEN 28 217 #endif 218 219 #if defined(__mn10300__) || defined(__mn10200__) 220 #ifdef __AM33_2__ 221 #define _JBLEN 26 222 #else 223 /* A guess */ 224 #define _JBLEN 10 225 #endif 226 #endif 227 228 #ifdef __v850 229 /* I think our setjmp is saving 15 regs at the moment. Gives us one word 230 slop if we need to expand. */ 231 #define _JBLEN 16 232 #endif 233 234 #if defined(_C4x) 235 #define _JBLEN 10 236 #endif 237 #if defined(_C3x) 238 #define _JBLEN 9 239 #endif 240 241 #ifdef __TMS320C6X__ 242 #define _JBLEN 13 243 #endif 244 245 #ifdef __TIC80__ 246 #define _JBLEN 13 247 #endif 248 249 #ifdef __D10V__ 250 #define _JBLEN 8 251 #endif 252 253 #ifdef __D30V__ 254 #define _JBLEN ((64 /* GPR */ + (2*2) /* ACs */ + 18 /* CRs */) / 2) 255 #define _JBTYPE double 256 #endif 257 258 #ifdef __frv__ 259 #define _JBLEN (68/2) /* room for 68 32-bit regs */ 260 #define _JBTYPE double 261 #endif 262 263 #ifdef __moxie__ 264 #define _JBLEN 10 265 #endif 266 267 #ifdef __CRX__ 268 #define _JBLEN 9 269 #endif 270 271 #if (defined(__CR16__) || defined(__CR16C__) ||defined(__CR16CP__)) 272 /* r6, r7, r8, r9, r10, r11, r12 (r12L, r12H), 273 * r13 (r13L, r13H), ra(raL, raH), sp(spL, spH) */ 274 #define _JBLEN 14 275 #define _JBTYPE unsigned short 276 #endif 277 278 #ifdef __fr30__ 279 #define _JBLEN 10 280 #endif 281 282 #ifdef __FT32__ 283 #define _JBLEN 27 284 #endif 285 286 #ifdef __iq2000__ 287 #define _JBLEN 32 288 #endif 289 290 #ifdef __mcore__ 291 #define _JBLEN 16 292 #endif 293 294 #if defined(__arc__) || defined(__ARC64__) 295 #define _JBLEN 25 /* r13-r30,blink,lp_count,lp_start,lp_end,mlo,mhi,status32 */ 296 #define _JBTYPE unsigned long 297 #endif 298 299 #ifdef __MMIX__ 300 /* Using a layout compatible with GCC's built-in. */ 301 #define _JBLEN 5 302 #define _JBTYPE unsigned long 303 #endif 304 305 #ifdef __mt__ 306 #define _JBLEN 16 307 #endif 308 309 #ifdef __SPU__ 310 #define _JBLEN 50 311 #define _JBTYPE __vector signed int 312 #endif 313 314 #ifdef __xstormy16__ 315 /* 4 GPRs plus SP plus PC. */ 316 #define _JBLEN 8 317 #endif 318 319 #ifdef __XTENSA__ 320 #if __XTENSA_WINDOWED_ABI__ 321 322 /* The jmp_buf structure for Xtensa windowed ABI holds the following 323 (where "proc" is the procedure that calls setjmp): 4-12 registers 324 from the window of proc, the 4 words from the save area at proc's $sp 325 (in case a subsequent alloca in proc moves $sp), and the return 326 address within proc. Everything else is saved on the stack in the 327 normal save areas. The jmp_buf structure is: 328 329 struct jmp_buf { 330 int regs[12]; 331 int save[4]; 332 void *return_address; 333 } 334 335 See the setjmp code for details. */ 336 337 #define _JBLEN 17 /* 12 + 4 + 1 */ 338 339 #else /* __XTENSA_CALL0_ABI__ */ 340 341 #define _JBLEN 6 /* a0, a1, a12, a13, a14, a15 */ 342 343 #endif /* __XTENSA_CALL0_ABI__ */ 344 #endif /* __XTENSA__ */ 345 346 #ifdef __mep__ 347 /* 16 GPRs, pc, hi, lo */ 348 #define _JBLEN 19 349 #endif 350 351 #ifdef __CRIS__ 352 #define _JBLEN 18 353 #endif 354 355 #ifdef __ia64 356 #define _JBLEN 64 357 #endif 358 359 #ifdef __lm32__ 360 #define _JBLEN 19 361 #endif 362 363 #ifdef __m32c__ 364 #if defined(__r8c_cpu__) || defined(__m16c_cpu__) 365 #define _JBLEN (22/2) 366 #else 367 #define _JBLEN (34/2) 368 #endif 369 #define _JBTYPE unsigned short 370 #endif /* __m32c__ */ 371 372 #ifdef __MSP430__ 373 #define _JBLEN 9 374 375 #ifdef __MSP430X_LARGE__ 376 #define _JBTYPE unsigned long 377 #else 378 #define _JBTYPE unsigned short 379 #endif 380 #endif 381 382 #ifdef __RL78__ 383 /* Three banks of registers, SP, CS, ES, PC */ 384 #define _JBLEN (8*3+8) 385 #define _JBTYPE unsigned char 386 #endif 387 388 /* 389 * There are two versions of setjmp()/longjmp(): 390 * 1) Compiler (gcc) built-in versions. 391 * 2) Function-call versions. 392 * 393 * The built-in versions are used most of the time. When used, gcc replaces 394 * calls to setjmp()/longjmp() with inline assembly code. The built-in 395 * versions save/restore a variable number of registers. 396 397 * _JBLEN is set to 40 to be ultra-safe with the built-in versions. 398 * It only needs to be 12 for the function-call versions 399 * but this data structure is used by both versions. 400 */ 401 #ifdef __NIOS2__ 402 #define _JBLEN 40 403 #define _JBTYPE unsigned long 404 #endif 405 406 #ifdef __PRU__ 407 #define _JBLEN 48 408 #define _JBTYPE unsigned int 409 #endif 410 411 #ifdef __RX__ 412 #define _JBLEN 0x44 413 #endif 414 415 #ifdef __VISIUM__ 416 /* All call-saved GP registers: r11-r19,r21,r22,r23. */ 417 #define _JBLEN 12 418 #endif 419 420 #ifdef __riscv 421 /* _JBTYPE using long long to make sure the alignment is align to 8 byte, 422 otherwise in rv32imafd, store/restore FPR may mis-align. */ 423 #define _JBTYPE long long 424 #ifdef __riscv_32e 425 #define _JBLEN ((4*sizeof(long))/sizeof(long)) 426 #else 427 #define _JBLEN ((14*sizeof(long) + 12*sizeof(double))/sizeof(long)) 428 #endif 429 #endif 430 431 #ifdef __CSKYABIV2__ 432 #define _JBTYPE unsigned long 433 #if defined(__CK801__) 434 #define _JBLEN 7 435 #elif defined(__CK802__) 436 #define _JBLEN 10 437 #else 438 #define _JBLEN 18 439 #endif 440 #endif 441 442 #ifdef _JBLEN 443 #ifdef _JBTYPE 444 typedef _JBTYPE jmp_buf[_JBLEN]; 445 #else 446 typedef int jmp_buf[_JBLEN]; 447 #endif 448 #endif 449 450 _END_STD_C 451 452 #if (defined(__CYGWIN__) || defined(__rtems__)) && __POSIX_VISIBLE 453 #include <signal.h> 454 455 #ifdef __cplusplus 456 extern "C" { 457 #endif 458 459 /* POSIX sigsetjmp/siglongjmp macros */ 460 #ifdef _JBTYPE 461 typedef _JBTYPE sigjmp_buf[_JBLEN+1+((sizeof (_JBTYPE) + sizeof (sigset_t) - 1) 462 /sizeof (_JBTYPE))]; 463 #else 464 typedef int sigjmp_buf[_JBLEN+1+(sizeof (sigset_t)/sizeof (int))]; 465 #endif 466 467 #define _SAVEMASK _JBLEN 468 #define _SIGMASK (_JBLEN+1) 469 470 #ifdef __CYGWIN__ 471 # define _CYGWIN_WORKING_SIGSETJMP 472 #endif 473 474 #ifdef _POSIX_THREADS 475 #define __SIGMASK_FUNC pthread_sigmask 476 #else 477 #define __SIGMASK_FUNC sigprocmask 478 #endif 479 480 #ifdef __CYGWIN__ 481 /* Per POSIX, siglongjmp has to be implemented as function. Cygwin 482 provides functions for both, siglongjmp and sigsetjmp since 2.2.0. */ 483 extern void siglongjmp (sigjmp_buf, int) __attribute__ ((__noreturn__)); 484 extern int sigsetjmp (sigjmp_buf, int); 485 #endif 486 487 #if defined(__GNUC__) 488 489 #define sigsetjmp(env, savemask) \ 490 __extension__ \ 491 ({ \ 492 sigjmp_buf *_sjbuf = &(env); \ 493 ((*_sjbuf)[_SAVEMASK] = savemask,\ 494 __SIGMASK_FUNC (SIG_SETMASK, 0, (sigset_t *)((*_sjbuf) + _SIGMASK)),\ 495 setjmp (*_sjbuf)); \ 496 }) 497 498 #define siglongjmp(env, val) \ 499 __extension__ \ 500 ({ \ 501 sigjmp_buf *_sjbuf = &(env); \ 502 ((((*_sjbuf)[_SAVEMASK]) ? \ 503 __SIGMASK_FUNC (SIG_SETMASK, (sigset_t *)((*_sjbuf) + _SIGMASK), 0)\ 504 : 0), \ 505 longjmp (*_sjbuf, val)); \ 506 }) 507 508 #else /* !__GNUC__ */ 509 510 #define sigsetjmp(env, savemask) ((env)[_SAVEMASK] = savemask,\ 511 __SIGMASK_FUNC (SIG_SETMASK, 0, (sigset_t *) ((env) + _SIGMASK)),\ 512 setjmp (env)) 513 514 #define siglongjmp(env, val) ((((env)[_SAVEMASK])?\ 515 __SIGMASK_FUNC (SIG_SETMASK, (sigset_t *) ((env) + _SIGMASK), 0):0),\ 516 longjmp (env, val)) 517 518 #endif 519 520 /* POSIX _setjmp/_longjmp, maintained for XSI compatibility. These 521 are equivalent to sigsetjmp/siglongjmp when not saving the signal mask. 522 New applications should use sigsetjmp/siglongjmp instead. */ 523 #ifdef __CYGWIN__ 524 extern void _longjmp (jmp_buf, int) __attribute__ ((__noreturn__)); 525 extern int _setjmp (jmp_buf); 526 #else 527 #define _setjmp(env) sigsetjmp ((env), 0) 528 #define _longjmp(env, val) siglongjmp ((env), (val)) 529 #endif 530 531 #ifdef __cplusplus 532 } 533 #endif 534 #endif /* (__CYGWIN__ or __rtems__) and __POSIX_VISIBLE */ 535
