newlib/libc/include/machine/setjmp.h

   1
   2 _BEGIN_STD_C
   3
   4 #if defined(__or1k__) || defined(__or1knd__)
   5 /*
   6  * r1, r2, r9, r14, r16 .. r30, SR.
   7  */
   8 #define _JBLEN 13
   9 #define _JBTYPE unsigned long
  10 #endif
  11
  12 #if defined(__arm__) || defined(__thumb__)
  13 /*
  14  * All callee preserved registers:
  15  *  core registers:
  16  *   r4 - r10, fp, sp, lr
  17  *  VFP registers (architectural support dependent):
  18  *   d8 - d15
  19  */
  20 #define _JBLEN 20
  21 #define _JBTYPE long long
  22 #endif
  23
  24 #if defined(__aarch64__)
  25 #define _JBLEN 22
  26 #define _JBTYPE long long
  27 #endif
  28
  29 #if defined(__AVR__)
  30 #define _JBLEN 24
  31 #endif
  32
  33 #ifdef __sparc__
  34 /*
  35  * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
  36  * All else recovered by under/over(flow) handling.
  37  */
  38 #define _JBLEN  13
  39 #endif
  40
  41 #ifdef __BFIN__
  42 #define _JBLEN  40
  43 #endif
  44
  45 #ifdef __epiphany__
  46 /* All callee preserved registers: r4-r10,fp, sp, lr,r15, r32-r39  */
  47 #define _JBTYPE long long
  48 #define _JBLEN 10
  49 #endif
  50
  51 /* necv70 was 9 as well. */
  52
  53 #if defined(__m68k__) || defined(__mc68000__)
  54 /*
  55  * onsstack,sigmask,sp,pc,psl,d2-d7,a2-a6,
  56  * fp2-fp7      for 68881.
  57  * All else recovered by under/over(flow) handling.
  58  */
  59 #define _JBLEN  34
  60 #endif
  61
  62 #if defined(__mc68hc11__) || defined(__mc68hc12__) || defined(__mc68hc1x__)
  63 /*
  64  * D, X, Y are not saved.
  65  * Only take into account the pseudo soft registers (max 32).
  66  */
  67 #define _JBLEN  32
  68 #endif
  69
  70 #ifdef __nds32__
  71 /* 17 words for GPRs,
  72    1 word for $fpcfg.freg and 30 words for FPUs
  73    Reserved 2 words for aligement-adjustment. When storeing double-precision
  74    floating-point register into memory, the address has to be
  75    double-word-aligned.
  76    Check libc/machine/nds32/setjmp.S for more information.  */
  77 #if __NDS32_EXT_FPU_SP__ || __NDS32_EXT_FPU_DP__
  78 #define _JBLEN 50
  79 #else
  80 #define _JBLEN 18
  81 #endif
  82 #endif
  83
  84 #if defined(__Z8001__) || defined(__Z8002__)
  85 /* 16 regs + pc */
  86 #define _JBLEN 20
  87 #endif
  88
  89 #ifdef _AM29K
  90 /*
  91  * onsstack,sigmask,sp,pc,npc,psr,g1,o0,wbcnt (sigcontext).
  92  * All else recovered by under/over(flow) handling.
  93  */
  94 #define _JBLEN  9
  95 #endif
  96
  97 #ifdef __i386__
  98 # if defined(__CYGWIN__) && !defined (_JBLEN)
  99 #  define _JBLEN (13 * 4)
 100 # elif defined(__unix__) || defined(__rtems__)
 101 #  define _JBLEN        9
 102 # elif defined(__iamcu__)
 103 /* Intel MCU jmp_buf only covers callee-saved registers. */
 104 #  define _JBLEN        6
 105 # else
 106 #  include "setjmp-dj.h"
 107 # endif
 108 #endif
 109
 110 #ifdef __x86_64__
 111 # ifdef __CYGWIN__
 112 #  define _JBTYPE long
 113 #  define _JBLEN  32
 114 # else
 115 #  define _JBTYPE long long
 116 #  define _JBLEN  8
 117 # endif
 118 #endif
 119
 120 #ifdef __i960__
 121 #define _JBLEN 35
 122 #endif
 123
 124 #ifdef __M32R__
 125 /* Only 8 words are currently needed.  10 gives us some slop if we need
 126    to expand.  */
 127 #define _JBLEN 10
 128 #endif
 129
 130 #ifdef __mips__
 131 # if defined(__mips64)
 132 #  define _JBTYPE long long
 133 # endif
 134 # ifdef __mips_soft_float
 135 #  define _JBLEN 11
 136 # else
 137 #  define _JBLEN 23
 138 # endif
 139 #endif
 140
 141 #ifdef __m88000__
 142 #define _JBLEN 21
 143 #endif
 144
 145 #ifdef __H8300__
 146 #define _JBLEN 5
 147 #define _JBTYPE int
 148 #endif
 149
 150 #ifdef __H8300H__
 151 /* same as H8/300 but registers are twice as big */
 152 #define _JBLEN 5
 153 #define _JBTYPE long
 154 #endif
 155
 156 #if defined (__H8300S__) || defined (__H8300SX__)
 157 /* same as H8/300 but registers are twice as big */
 158 #define _JBLEN 5
 159 #define _JBTYPE long
 160 #endif
 161
 162 #ifdef __H8500__
 163 #define _JBLEN 4
 164 #endif
 165
 166 #ifdef  __sh__
 167 #if __SH5__
 168 #define _JBLEN 50
 169 #define _JBTYPE long long
 170 #else
 171 #define _JBLEN 20
 172 #endif /* __SH5__ */
 173 #endif
 174
 175 #ifdef  __v800
 176 #define _JBLEN 28
 177 #endif
 178
 179 #ifdef __PPC__
 180 #ifdef __powerpc64__
 181 #ifdef __ALTIVEC__
 182 #define _JBLEN 70
 183 #else
 184 #define _JBLEN 43
 185 #endif
 186 #else
 187 #ifdef __ALTIVEC__
 188 #define _JBLEN 64
 189 #else
 190 #define _JBLEN 32
 191 #endif
 192 #endif
 193 #define _JBTYPE double
 194 #endif
 195
 196 #ifdef __MICROBLAZE__
 197 #define _JBLEN  20
 198 #define _JBTYPE unsigned int
 199 #endif
 200
 201 #ifdef __hppa__
 202 /* %r30, %r2-%r18, %r27, pad, %fr12-%fr15.
 203    Note space exists for the FP registers, but they are not
 204    saved.  */
 205 #define _JBLEN 28
 206 #endif
 207
 208 #if defined(__mn10300__) || defined(__mn10200__)
 209 #ifdef __AM33_2__
 210 #define _JBLEN 26
 211 #else
 212 /* A guess */
 213 #define _JBLEN 10
 214 #endif
 215 #endif
 216
 217 #ifdef __v850
 218 /* I think our setjmp is saving 15 regs at the moment.  Gives us one word
 219    slop if we need to expand.  */
 220 #define _JBLEN 16
 221 #endif
 222
 223 #if defined(_C4x)
 224 #define _JBLEN 10
 225 #endif
 226 #if defined(_C3x)
 227 #define _JBLEN 9
 228 #endif
 229
 230 #ifdef __TMS320C6X__
 231 #define _JBLEN 13
 232 #endif
 233
 234 #ifdef __TIC80__
 235 #define _JBLEN 13
 236 #endif
 237
 238 #ifdef __D10V__
 239 #define _JBLEN 8
 240 #endif
 241
 242 #ifdef __D30V__
 243 #define _JBLEN ((64 /* GPR */ + (2*2) /* ACs */ + 18 /* CRs */) / 2)
 244 #define _JBTYPE double
 245 #endif
 246
 247 #ifdef __frv__
 248 #define _JBLEN (68/2)  /* room for 68 32-bit regs */
 249 #define _JBTYPE double
 250 #endif
 251
 252 #ifdef __moxie__
 253 #define _JBLEN 10
 254 #endif
 255
 256 #ifdef __CRX__
 257 #define _JBLEN 9
 258 #endif
 259
 260 #if (defined(__CR16__) || defined(__CR16C__) ||defined(__CR16CP__))
 261 /* r6, r7, r8, r9, r10, r11, r12 (r12L, r12H),
 262  * r13 (r13L, r13H), ra(raL, raH), sp(spL, spH) */
 263 #define _JBLEN 14
 264 #define _JBTYPE unsigned short
 265 #endif
 266
 267 #ifdef __fr30__
 268 #define _JBLEN 10
 269 #endif
 270
 271 #ifdef  __FT32__
 272 #define _JBLEN 27
 273 #endif
 274
 275 #ifdef __iq2000__
 276 #define _JBLEN 32
 277 #endif
 278
 279 #ifdef __mcore__
 280 #define _JBLEN 16
 281 #endif
 282
 283 #ifdef __arc__
 284 #define _JBLEN 25 /* r13-r30,blink,lp_count,lp_start,lp_end,status32,r58,r59 */
 285 #endif
 286
 287 #ifdef __ARC64__
 288 /* r14-r27,sp,ilink,r30,blink  */
 289 #define _JBLEN 18
 290 #ifdef __ARC64_ARCH64__
 291 #define _JBTYPE long long
 292 #else  /* __ARC64_ARCH32__ */
 293 #define _JBTYPE long
 294 #endif
 295 #endif /* __ARC64__ */
 296
 297 #ifdef __MMIX__
 298 /* Using a layout compatible with GCC's built-in.  */
 299 #define _JBLEN 5
 300 #define _JBTYPE unsigned long
 301 #endif
 302
 303 #ifdef __mt__
 304 #define _JBLEN 16
 305 #endif
 306
 307 #ifdef __SPU__
 308 #define _JBLEN 50
 309 #define _JBTYPE __vector signed int
 310 #endif
 311
 312 #ifdef __xstormy16__
 313 /* 4 GPRs plus SP plus PC. */
 314 #define _JBLEN 8
 315 #endif
 316
 317 #ifdef __XTENSA__
 318 #if __XTENSA_WINDOWED_ABI__
 319
 320 /* The jmp_buf structure for Xtensa windowed ABI holds the following
 321    (where "proc" is the procedure that calls setjmp): 4-12 registers
 322    from the window of proc, the 4 words from the save area at proc's $sp
 323    (in case a subsequent alloca in proc moves $sp), and the return
 324    address within proc. Everything else is saved on the stack in the
 325    normal save areas. The jmp_buf structure is:
 326
 327    struct jmp_buf {
 328       int regs[12];
 329       int save[4];
 330       void *return_address;
 331    }
 332
 333    See the setjmp code for details.  */
 334
 335 /* sizeof(struct jmp_buf) */
 336 #define _JBLEN 17
 337
 338 #else /* __XTENSA_CALL0_ABI__ */
 339
 340 /* a0, a1, a12, a13, a14, a15 */
 341 #define _JBLEN 6
 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 */