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 #include <sys/cdefs.h> 14 15 _BEGIN_STD_C 16 17 #if defined(__or1k__) || defined(__or1knd__) 18 /* 19 * r1, r2, r9, r14, r16 .. r30, SR. 20 */ 21 #define _JBLEN 13 22 #define _JBTYPE unsigned long 23 #endif 24 25 #if defined(__arm__) || defined(__thumb__) 26 /* 27 * All callee preserved registers: 28 * core registers: 29 * r4 - r10, fp, sp, lr 30 * VFP registers (architectural support dependent): 31 * d8 - d15 32 */ 33 #define _JBLEN 20 34 #define _JBTYPE long long 35 #endif 36 37 #if defined(__aarch64__) 38 #define _JBLEN 22 39 #define _JBTYPE long long 40 #endif 41 42 #if defined(__AVR__) 43 #define _JBLEN 24 44 #endif 45 46 #ifdef __sparc__ 47 /* 48 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext). 49 * All else recovered by under/over(flow) handling. 50 */ 51 #define _JBLEN 13 52 #endif 53 54 #ifdef __BFIN__ 55 #define _JBLEN 40 56 #endif 57 58 #ifdef __epiphany__ 59 /* All callee preserved registers: r4-r10,fp, sp, lr,r15, r32-r39 */ 60 #define _JBTYPE long long 61 #define _JBLEN 10 62 #endif 63 64 /* necv70 was 9 as well. */ 65 66 #if defined(__m68k__) || defined(__mc68000__) 67 /* 68 * onsstack,sigmask,sp,pc,psl,d2-d7,a2-a6, 69 * fp2-fp7 for 68881. 70 * All else recovered by under/over(flow) handling. 71 */ 72 #define _JBLEN 34 73 #endif 74 75 #if defined(__mc68hc11__) || defined(__mc68hc12__) || defined(__mc68hc1x__) 76 /* 77 * D, X, Y are not saved. 78 * Only take into account the pseudo soft registers (max 32). 79 */ 80 #define _JBLEN 32 81 #endif 82 83 #ifdef __nds32__ 84 /* 17 words for GPRs, 85 1 word for $fpcfg.freg and 30 words for FPUs 86 Reserved 2 words for aligement-adjustment. When storeing double-precision 87 floating-point register into memory, the address has to be 88 double-word-aligned. 89 Check libc/machine/nds32/setjmp.S for more information. */ 90 #if __NDS32_EXT_FPU_SP__ || __NDS32_EXT_FPU_DP__ 91 #define _JBLEN 50 92 #else 93 #define _JBLEN 18 94 #endif 95 #endif 96 97 #if defined(__Z8001__) || defined(__Z8002__) 98 /* 16 regs + pc */ 99 #define _JBLEN 20 100 #endif 101 102 #ifdef _AM29K 103 /* 104 * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext). 105 * All else recovered by under/over(flow) handling. 106 */ 107 #define _JBLEN 9 108 #endif 109 110 #ifdef __i386__ 111 # if defined(__iamcu__) 112 /* Intel MCU jmp_buf only covers callee-saved registers. */ 113 # define _JBLEN 6 114 # else 115 # define _JBLEN 9 116 # endif 117 #endif 118 119 #ifdef __x86_64__ 120 # define _JBTYPE long long 121 # define _JBLEN 8 122 #endif 123 124 #ifdef __i960__ 125 #define _JBLEN 35 126 #endif 127 128 #ifdef __M32R__ 129 /* Only 8 words are currently needed. 10 gives us some slop if we need 130 to expand. */ 131 #define _JBLEN 10 132 #endif 133 134 #ifdef __mips__ 135 # if defined(__mips64) 136 # define _JBTYPE long long 137 # endif 138 # ifdef __mips_soft_float 139 # define _JBLEN 11 140 # else 141 # define _JBLEN 23 142 # endif 143 #endif 144 145 #ifdef __m88000__ 146 #define _JBLEN 21 147 #endif 148 149 #ifdef __H8300__ 150 #define _JBLEN 5 151 #define _JBTYPE int 152 #endif 153 154 #ifdef __H8300H__ 155 /* same as H8/300 but registers are twice as big */ 156 #define _JBLEN 5 157 #define _JBTYPE long 158 #endif 159 160 #if defined (__H8300S__) || defined (__H8300SX__) 161 /* same as H8/300 but registers are twice as big */ 162 #define _JBLEN 5 163 #define _JBTYPE long 164 #endif 165 166 #ifdef __H8500__ 167 #define _JBLEN 4 168 #endif 169 170 #ifdef __sh__ 171 #if __SH5__ 172 #define _JBLEN 50 173 #define _JBTYPE long long 174 #else 175 #define _JBLEN 20 176 #endif /* __SH5__ */ 177 #endif 178 179 #ifdef __v800 180 #define _JBLEN 28 181 #endif 182 183 #ifdef __PPC__ 184 #ifdef __powerpc64__ 185 #ifdef __ALTIVEC__ 186 #define _JBLEN 70 187 #else 188 #define _JBLEN 43 189 #endif 190 #else 191 #ifdef __ALTIVEC__ 192 #define _JBLEN 64 193 #else 194 #define _JBLEN 32 195 #endif 196 #endif 197 #define _JBTYPE double 198 #endif 199 200 #ifdef __MICROBLAZE__ 201 #define _JBLEN 20 202 #define _JBTYPE unsigned int 203 #endif 204 205 #ifdef __hppa__ 206 /* %r30, %r2-%r18, %r27, pad, %fr12-%fr15. 207 Note space exists for the FP registers, but they are not 208 saved. */ 209 #define _JBLEN 28 210 #endif 211 212 #if defined(__mn10300__) || defined(__mn10200__) 213 #ifdef __AM33_2__ 214 #define _JBLEN 26 215 #else 216 /* A guess */ 217 #define _JBLEN 10 218 #endif 219 #endif 220 221 #ifdef __v850 222 /* I think our setjmp is saving 15 regs at the moment. Gives us one word 223 slop if we need to expand. */ 224 #define _JBLEN 16 225 #endif 226 227 #if defined(_C4x) 228 #define _JBLEN 10 229 #endif 230 #if defined(_C3x) 231 #define _JBLEN 9 232 #endif 233 234 #ifdef __TMS320C6X__ 235 #define _JBLEN 13 236 #endif 237 238 #ifdef __TIC80__ 239 #define _JBLEN 13 240 #endif 241 242 #ifdef __D10V__ 243 #define _JBLEN 8 244 #endif 245 246 #ifdef __D30V__ 247 #define _JBLEN ((64 /* GPR */ + (2*2) /* ACs */ + 18 /* CRs */) / 2) 248 #define _JBTYPE double 249 #endif 250 251 #ifdef __frv__ 252 #define _JBLEN (68/2) /* room for 68 32-bit regs */ 253 #define _JBTYPE double 254 #endif 255 256 #ifdef __moxie__ 257 #define _JBLEN 10 258 #endif 259 260 #ifdef __CRX__ 261 #define _JBLEN 9 262 #endif 263 264 #if (defined(__CR16__) || defined(__CR16C__) ||defined(__CR16CP__)) 265 /* r6, r7, r8, r9, r10, r11, r12 (r12L, r12H), 266 * r13 (r13L, r13H), ra(raL, raH), sp(spL, spH) */ 267 #define _JBLEN 14 268 #define _JBTYPE unsigned short 269 #endif 270 271 #ifdef __fr30__ 272 #define _JBLEN 10 273 #endif 274 275 #ifdef __FT32__ 276 #define _JBLEN 27 277 #endif 278 279 #ifdef __iq2000__ 280 #define _JBLEN 32 281 #endif 282 283 #ifdef __mcore__ 284 #define _JBLEN 16 285 #endif 286 287 #ifdef __arc__ 288 #define _JBLEN 25 /* r13-r30,blink,lp_count,lp_start,lp_end,mlo,mhi,status32 */ 289 #define _JBTYPE unsigned long 290 #endif 291 292 #ifdef __ARC64__ 293 /* r14-r27,sp,ilink,r30,blink */ 294 #define _JBLEN 18 295 #ifdef __ARC64_ARCH64__ 296 #define _JBTYPE long long 297 #else /* __ARC64_ARCH32__ */ 298 #define _JBTYPE long 299 #endif 300 #endif /* __ARC64__ */ 301 302 #ifdef __MMIX__ 303 /* Using a layout compatible with GCC's built-in. */ 304 #define _JBLEN 5 305 #define _JBTYPE unsigned long 306 #endif 307 308 #ifdef __mt__ 309 #define _JBLEN 16 310 #endif 311 312 #ifdef __SPU__ 313 #define _JBLEN 50 314 #define _JBTYPE __vector signed int 315 #endif 316 317 #ifdef __xstormy16__ 318 /* 4 GPRs plus SP plus PC. */ 319 #define _JBLEN 8 320 #endif 321 322 #ifdef __XTENSA__ 323 #if __XTENSA_WINDOWED_ABI__ 324 325 /* The jmp_buf structure for Xtensa windowed ABI holds the following 326 (where "proc" is the procedure that calls setjmp): 4-12 registers 327 from the window of proc, the 4 words from the save area at proc's $sp 328 (in case a subsequent alloca in proc moves $sp), and the return 329 address within proc. Everything else is saved on the stack in the 330 normal save areas. The jmp_buf structure is: 331 332 struct jmp_buf { 333 int regs[12]; 334 int save[4]; 335 void *return_address; 336 } 337 338 See the setjmp code for details. */ 339 340 /* sizeof(struct jmp_buf) */ 341 #define _JBLEN 17 342 343 #else /* __XTENSA_CALL0_ABI__ */ 344 345 /* a0, a1, a12, a13, a14, a15 */ 346 #define _JBLEN 6 347 348 #endif /* __XTENSA_CALL0_ABI__ */ 349 #endif /* __XTENSA__ */ 350 351 #ifdef __mep__ 352 /* 16 GPRs, pc, hi, lo */ 353 #define _JBLEN 19 354 #endif 355 356 #ifdef __CRIS__ 357 #define _JBLEN 18 358 #endif 359 360 #ifdef __ia64 361 #define _JBLEN 64 362 #endif 363 364 #ifdef __lm32__ 365 #define _JBLEN 19 366 #endif 367 368 #ifdef __m32c__ 369 #if defined(__r8c_cpu__) || defined(__m16c_cpu__) 370 #define _JBLEN (22/2) 371 #else 372 #define _JBLEN (34/2) 373 #endif 374 #define _JBTYPE unsigned short 375 #endif /* __m32c__ */ 376 377 #ifdef __MSP430__ 378 #define _JBLEN 9 379 380 #ifdef __MSP430X_LARGE__ 381 #define _JBTYPE unsigned long 382 #else 383 #define _JBTYPE unsigned short 384 #endif 385 #endif 386 387 #ifdef __RL78__ 388 /* Three banks of registers, SP, CS, ES, PC */ 389 #define _JBLEN (8*3+8) 390 #define _JBTYPE unsigned char 391 #endif 392 393 /* 394 * There are two versions of setjmp()/longjmp(): 395 * 1) Compiler (gcc) built-in versions. 396 * 2) Function-call versions. 397 * 398 * The built-in versions are used most of the time. When used, gcc replaces 399 * calls to setjmp()/longjmp() with inline assembly code. The built-in 400 * versions save/restore a variable number of registers. 401 402 * _JBLEN is set to 40 to be ultra-safe with the built-in versions. 403 * It only needs to be 12 for the function-call versions 404 * but this data structure is used by both versions. 405 */ 406 #ifdef __NIOS2__ 407 #define _JBLEN 40 408 #define _JBTYPE unsigned long 409 #endif 410 411 #ifdef __PRU__ 412 #define _JBLEN 48 413 #define _JBTYPE unsigned int 414 #endif 415 416 #ifdef __RX__ 417 #define _JBLEN 0x44 418 #endif 419 420 #ifdef __VISIUM__ 421 /* All call-saved GP registers: r11-r19,r21,r22,r23. */ 422 #define _JBLEN 12 423 #endif 424 425 #ifdef __riscv 426 /* _JBTYPE using long long to make sure the alignment is align to 8 byte, 427 otherwise in rv32imafd, store/restore FPR may mis-align. */ 428 #define _JBTYPE long long 429 #ifdef __riscv_32e 430 #define _JBLEN ((4*sizeof(long))/sizeof(long)) 431 #else 432 #define _JBLEN ((14*sizeof(long) + 12*sizeof(double))/sizeof(long)) 433 #endif 434 #endif 435 436 #ifdef __CSKYABIV2__ 437 #define _JBTYPE unsigned long 438 #if defined(__CK801__) 439 #define _JBLEN 7 440 #elif defined(__CK802__) 441 #define _JBLEN 10 442 #else 443 #define _JBLEN 18 444 #endif 445 #endif 446 447 #ifdef _JBLEN 448 #ifdef _JBTYPE 449 typedef _JBTYPE jmp_buf[_JBLEN]; 450 #else 451 typedef int jmp_buf[_JBLEN]; 452 #endif 453 #endif 454 455 _END_STD_C 456 457 #if (defined(__CYGWIN__) || defined(__rtems__)) && __POSIX_VISIBLE 458 #include <signal.h> 459 460 _BEGIN_STD_C 461 462 /* POSIX sigsetjmp/siglongjmp macros */ 463 #ifdef _JBTYPE 464 typedef _JBTYPE sigjmp_buf[_JBLEN+1+((sizeof (_JBTYPE) + sizeof (sigset_t) - 1) 465 /sizeof (_JBTYPE))]; 466 #else 467 typedef int sigjmp_buf[_JBLEN+1+(sizeof (sigset_t)/sizeof (int))]; 468 #endif 469 470 #define _SAVEMASK _JBLEN 471 #define _SIGMASK (_JBLEN+1) 472 473 474 #ifdef _POSIX_THREADS 475 #define __SIGMASK_FUNC pthread_sigmask 476 #else 477 #define __SIGMASK_FUNC sigprocmask 478 #endif 479 480 481 #if defined(__GNUC__) 482 483 #define sigsetjmp(env, savemask) \ 484 __extension__ \ 485 ({ \ 486 sigjmp_buf *_sjbuf = &(env); \ 487 ((*_sjbuf)[_SAVEMASK] = savemask,\ 488 __SIGMASK_FUNC (SIG_SETMASK, 0, (sigset_t *)((*_sjbuf) + _SIGMASK)),\ 489 setjmp (*_sjbuf)); \ 490 }) 491 492 #define siglongjmp(env, val) \ 493 __extension__ \ 494 ({ \ 495 sigjmp_buf *_sjbuf = &(env); \ 496 ((((*_sjbuf)[_SAVEMASK]) ? \ 497 __SIGMASK_FUNC (SIG_SETMASK, (sigset_t *)((*_sjbuf) + _SIGMASK), 0)\ 498 : 0), \ 499 longjmp (*_sjbuf, val)); \ 500 }) 501 502 #else /* !__GNUC__ */ 503 504 #define sigsetjmp(env, savemask) ((env)[_SAVEMASK] = savemask,\ 505 __SIGMASK_FUNC (SIG_SETMASK, 0, (sigset_t *) ((env) + _SIGMASK)),\ 506 setjmp (env)) 507 508 #define siglongjmp(env, val) ((((env)[_SAVEMASK])?\ 509 __SIGMASK_FUNC (SIG_SETMASK, (sigset_t *) ((env) + _SIGMASK), 0):0),\ 510 longjmp (env, val)) 511 512 #endif 513 514 /* POSIX _setjmp/_longjmp, maintained for XSI compatibility. These 515 are equivalent to sigsetjmp/siglongjmp when not saving the signal mask. 516 New applications should use sigsetjmp/siglongjmp instead. */ 517 #define _setjmp(env) sigsetjmp ((env), 0) 518 #define _longjmp(env, val) siglongjmp ((env), (val)) 519 520 _END_STD_C 521 522 #endif /* (__CYGWIN__ or __rtems__) and __POSIX_VISIBLE */ 523
