| 1 | /* Native-dependent code for LynxOS. |
| 2 | |
| 3 | Copyright 1993, 1994, 1995, 1996, 1999, 2000, 2001, 2003 Free |
| 4 | Software Foundation, Inc. |
| 5 | |
| 6 | This file is part of GDB. |
| 7 | |
| 8 | This program is free software; you can redistribute it and/or modify |
| 9 | it under the terms of the GNU General Public License as published by |
| 10 | the Free Software Foundation; either version 2 of the License, or |
| 11 | (at your option) any later version. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | You should have received a copy of the GNU General Public License |
| 19 | along with this program; if not, write to the Free Software |
| 20 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 21 | Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include "frame.h" |
| 25 | #include "inferior.h" |
| 26 | #include "target.h" |
| 27 | #include "gdbcore.h" |
| 28 | #include "regcache.h" |
| 29 | |
| 30 | #include <sys/ptrace.h> |
| 31 | #Include "gdb_wait.h" |
| 32 | #include <sys/fpp.h> |
| 33 | |
| 34 | static unsigned long registers_addr (int pid); |
| 35 | static void fetch_core_registers (char *, unsigned, int, CORE_ADDR); |
| 36 | |
| 37 | #define X(ENTRY)(offsetof(struct econtext, ENTRY)) |
| 38 | |
| 39 | #ifdef I386 |
| 40 | /* Mappings from tm-i386v.h */ |
| 41 | |
| 42 | static int regmap[] = |
| 43 | { |
| 44 | X (eax), |
| 45 | X (ecx), |
| 46 | X (edx), |
| 47 | X (ebx), |
| 48 | X (esp), /* sp */ |
| 49 | X (ebp), /* fp */ |
| 50 | X (esi), |
| 51 | X (edi), |
| 52 | X (eip), /* pc */ |
| 53 | X (flags), /* ps */ |
| 54 | X (cs), |
| 55 | X (ss), |
| 56 | X (ds), |
| 57 | X (es), |
| 58 | X (ecode), /* Lynx doesn't give us either fs or gs, so */ |
| 59 | X (fault), /* we just substitute these two in the hopes |
| 60 | that they are useful. */ |
| 61 | }; |
| 62 | #endif /* I386 */ |
| 63 | |
| 64 | #ifdef M68K |
| 65 | /* Mappings from tm-m68k.h */ |
| 66 | |
| 67 | static int regmap[] = |
| 68 | { |
| 69 | X (regs[0]), /* d0 */ |
| 70 | X (regs[1]), /* d1 */ |
| 71 | X (regs[2]), /* d2 */ |
| 72 | X (regs[3]), /* d3 */ |
| 73 | X (regs[4]), /* d4 */ |
| 74 | X (regs[5]), /* d5 */ |
| 75 | X (regs[6]), /* d6 */ |
| 76 | X (regs[7]), /* d7 */ |
| 77 | X (regs[8]), /* a0 */ |
| 78 | X (regs[9]), /* a1 */ |
| 79 | X (regs[10]), /* a2 */ |
| 80 | X (regs[11]), /* a3 */ |
| 81 | X (regs[12]), /* a4 */ |
| 82 | X (regs[13]), /* a5 */ |
| 83 | X (regs[14]), /* fp */ |
| 84 | offsetof (st_t, usp) - offsetof (st_t, ec), /* sp */ |
| 85 | X (status), /* ps */ |
| 86 | X (pc), |
| 87 | |
| 88 | X (fregs[0 * 3]), /* fp0 */ |
| 89 | X (fregs[1 * 3]), /* fp1 */ |
| 90 | X (fregs[2 * 3]), /* fp2 */ |
| 91 | X (fregs[3 * 3]), /* fp3 */ |
| 92 | X (fregs[4 * 3]), /* fp4 */ |
| 93 | X (fregs[5 * 3]), /* fp5 */ |
| 94 | X (fregs[6 * 3]), /* fp6 */ |
| 95 | X (fregs[7 * 3]), /* fp7 */ |
| 96 | |
| 97 | X (fcregs[0]), /* fpcontrol */ |
| 98 | X (fcregs[1]), /* fpstatus */ |
| 99 | X (fcregs[2]), /* fpiaddr */ |
| 100 | X (ssw), /* fpcode */ |
| 101 | X (fault), /* fpflags */ |
| 102 | }; |
| 103 | #endif /* M68K */ |
| 104 | |
| 105 | #ifdef SPARC |
| 106 | /* Mappings from tm-sparc.h */ |
| 107 | |
| 108 | #define FX(ENTRY)(offsetof(struct fcontext, ENTRY)) |
| 109 | |
| 110 | static int regmap[] = |
| 111 | { |
| 112 | -1, /* g0 */ |
| 113 | X (g1), |
| 114 | X (g2), |
| 115 | X (g3), |
| 116 | X (g4), |
| 117 | -1, /* g5->g7 aren't saved by Lynx */ |
| 118 | -1, |
| 119 | -1, |
| 120 | |
| 121 | X (o[0]), |
| 122 | X (o[1]), |
| 123 | X (o[2]), |
| 124 | X (o[3]), |
| 125 | X (o[4]), |
| 126 | X (o[5]), |
| 127 | X (o[6]), /* sp */ |
| 128 | X (o[7]), /* ra */ |
| 129 | |
| 130 | -1, -1, -1, -1, -1, -1, -1, -1, /* l0 -> l7 */ |
| 131 | |
| 132 | -1, -1, -1, -1, -1, -1, -1, -1, /* i0 -> i7 */ |
| 133 | |
| 134 | FX (f.fregs[0]), /* f0 */ |
| 135 | FX (f.fregs[1]), |
| 136 | FX (f.fregs[2]), |
| 137 | FX (f.fregs[3]), |
| 138 | FX (f.fregs[4]), |
| 139 | FX (f.fregs[5]), |
| 140 | FX (f.fregs[6]), |
| 141 | FX (f.fregs[7]), |
| 142 | FX (f.fregs[8]), |
| 143 | FX (f.fregs[9]), |
| 144 | FX (f.fregs[10]), |
| 145 | FX (f.fregs[11]), |
| 146 | FX (f.fregs[12]), |
| 147 | FX (f.fregs[13]), |
| 148 | FX (f.fregs[14]), |
| 149 | FX (f.fregs[15]), |
| 150 | FX (f.fregs[16]), |
| 151 | FX (f.fregs[17]), |
| 152 | FX (f.fregs[18]), |
| 153 | FX (f.fregs[19]), |
| 154 | FX (f.fregs[20]), |
| 155 | FX (f.fregs[21]), |
| 156 | FX (f.fregs[22]), |
| 157 | FX (f.fregs[23]), |
| 158 | FX (f.fregs[24]), |
| 159 | FX (f.fregs[25]), |
| 160 | FX (f.fregs[26]), |
| 161 | FX (f.fregs[27]), |
| 162 | FX (f.fregs[28]), |
| 163 | FX (f.fregs[29]), |
| 164 | FX (f.fregs[30]), |
| 165 | FX (f.fregs[31]), |
| 166 | |
| 167 | X (y), |
| 168 | X (psr), |
| 169 | X (wim), |
| 170 | X (tbr), |
| 171 | X (pc), |
| 172 | X (npc), |
| 173 | FX (fsr), /* fpsr */ |
| 174 | -1, /* cpsr */ |
| 175 | }; |
| 176 | #endif /* SPARC */ |
| 177 | |
| 178 | #ifdef rs6000 |
| 179 | |
| 180 | static int regmap[] = |
| 181 | { |
| 182 | X (iregs[0]), /* r0 */ |
| 183 | X (iregs[1]), |
| 184 | X (iregs[2]), |
| 185 | X (iregs[3]), |
| 186 | X (iregs[4]), |
| 187 | X (iregs[5]), |
| 188 | X (iregs[6]), |
| 189 | X (iregs[7]), |
| 190 | X (iregs[8]), |
| 191 | X (iregs[9]), |
| 192 | X (iregs[10]), |
| 193 | X (iregs[11]), |
| 194 | X (iregs[12]), |
| 195 | X (iregs[13]), |
| 196 | X (iregs[14]), |
| 197 | X (iregs[15]), |
| 198 | X (iregs[16]), |
| 199 | X (iregs[17]), |
| 200 | X (iregs[18]), |
| 201 | X (iregs[19]), |
| 202 | X (iregs[20]), |
| 203 | X (iregs[21]), |
| 204 | X (iregs[22]), |
| 205 | X (iregs[23]), |
| 206 | X (iregs[24]), |
| 207 | X (iregs[25]), |
| 208 | X (iregs[26]), |
| 209 | X (iregs[27]), |
| 210 | X (iregs[28]), |
| 211 | X (iregs[29]), |
| 212 | X (iregs[30]), |
| 213 | X (iregs[31]), |
| 214 | |
| 215 | X (fregs[0]), /* f0 */ |
| 216 | X (fregs[1]), |
| 217 | X (fregs[2]), |
| 218 | X (fregs[3]), |
| 219 | X (fregs[4]), |
| 220 | X (fregs[5]), |
| 221 | X (fregs[6]), |
| 222 | X (fregs[7]), |
| 223 | X (fregs[8]), |
| 224 | X (fregs[9]), |
| 225 | X (fregs[10]), |
| 226 | X (fregs[11]), |
| 227 | X (fregs[12]), |
| 228 | X (fregs[13]), |
| 229 | X (fregs[14]), |
| 230 | X (fregs[15]), |
| 231 | X (fregs[16]), |
| 232 | X (fregs[17]), |
| 233 | X (fregs[18]), |
| 234 | X (fregs[19]), |
| 235 | X (fregs[20]), |
| 236 | X (fregs[21]), |
| 237 | X (fregs[22]), |
| 238 | X (fregs[23]), |
| 239 | X (fregs[24]), |
| 240 | X (fregs[25]), |
| 241 | X (fregs[26]), |
| 242 | X (fregs[27]), |
| 243 | X (fregs[28]), |
| 244 | X (fregs[29]), |
| 245 | X (fregs[30]), |
| 246 | X (fregs[31]), |
| 247 | |
| 248 | X (srr0), /* IAR (PC) */ |
| 249 | X (srr1), /* MSR (PS) */ |
| 250 | X (cr), /* CR */ |
| 251 | X (lr), /* LR */ |
| 252 | X (ctr), /* CTR */ |
| 253 | X (xer), /* XER */ |
| 254 | X (mq) /* MQ */ |
| 255 | }; |
| 256 | |
| 257 | #endif /* rs6000 */ |
| 258 | |
| 259 | #if defined (I386) || defined (M68K) || defined (rs6000) |
| 260 | |
| 261 | /* Return the offset relative to the start of the per-thread data to the |
| 262 | saved context block. */ |
| 263 | |
| 264 | static unsigned long |
| 265 | registers_addr (int pid) |
| 266 | { |
| 267 | CORE_ADDR stblock; |
| 268 | int ecpoff = offsetof (st_t, ecp); |
| 269 | CORE_ADDR ecp; |
| 270 | |
| 271 | errno = 0; |
| 272 | stblock = (CORE_ADDR) ptrace (PTRACE_THREADUSER, pid, (PTRACE_ARG3_TYPE) 0, |
| 273 | 0); |
| 274 | if (errno) |
| 275 | perror_with_name ("ptrace(PTRACE_THREADUSER)"); |
| 276 | |
| 277 | ecp = (CORE_ADDR) ptrace (PTRACE_PEEKTHREAD, pid, (PTRACE_ARG3_TYPE) ecpoff, |
| 278 | 0); |
| 279 | if (errno) |
| 280 | perror_with_name ("ptrace(PTRACE_PEEKTHREAD)"); |
| 281 | |
| 282 | return ecp - stblock; |
| 283 | } |
| 284 | |
| 285 | /* Fetch one or more registers from the inferior. REGNO == -1 to get |
| 286 | them all. We actually fetch more than requested, when convenient, |
| 287 | marking them as valid so we won't fetch them again. */ |
| 288 | |
| 289 | void |
| 290 | fetch_inferior_registers (int regno) |
| 291 | { |
| 292 | int reglo, reghi; |
| 293 | int i; |
| 294 | unsigned long ecp; |
| 295 | |
| 296 | if (regno == -1) |
| 297 | { |
| 298 | reglo = 0; |
| 299 | reghi = NUM_REGS - 1; |
| 300 | } |
| 301 | else |
| 302 | reglo = reghi = regno; |
| 303 | |
| 304 | ecp = registers_addr (PIDGET (inferior_ptid)); |
| 305 | |
| 306 | { |
| 307 | char buf[MAX_REGISTER_SIZE]; |
| 308 | for (regno = reglo; regno <= reghi; regno++) |
| 309 | { |
| 310 | int ptrace_fun = PTRACE_PEEKTHREAD; |
| 311 | |
| 312 | #ifdef M68K |
| 313 | ptrace_fun = regno == SP_REGNUM ? PTRACE_PEEKUSP : PTRACE_PEEKTHREAD; |
| 314 | #endif |
| 315 | |
| 316 | for (i = 0; i < register_size (current_gdbarch, regno); i += sizeof (int)) |
| 317 | { |
| 318 | unsigned int reg; |
| 319 | |
| 320 | errno = 0; |
| 321 | reg = ptrace (ptrace_fun, PIDGET (inferior_ptid), |
| 322 | (PTRACE_ARG3_TYPE) (ecp + regmap[regno] + i), 0); |
| 323 | if (errno) |
| 324 | perror_with_name ("ptrace(PTRACE_PEEKUSP)"); |
| 325 | |
| 326 | *(int *) &buf[i] = reg; |
| 327 | } |
| 328 | regcache_raw_supply (current_regcache, regno, buf); |
| 329 | } |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | /* Store our register values back into the inferior. |
| 334 | If REGNO is -1, do this for all registers. |
| 335 | Otherwise, REGNO specifies which register (so we can save time). */ |
| 336 | |
| 337 | void |
| 338 | store_inferior_registers (int regno) |
| 339 | { |
| 340 | int reglo, reghi; |
| 341 | int i; |
| 342 | unsigned long ecp; |
| 343 | |
| 344 | if (regno == -1) |
| 345 | { |
| 346 | reglo = 0; |
| 347 | reghi = NUM_REGS - 1; |
| 348 | } |
| 349 | else |
| 350 | reglo = reghi = regno; |
| 351 | |
| 352 | ecp = registers_addr (PIDGET (inferior_ptid)); |
| 353 | |
| 354 | for (regno = reglo; regno <= reghi; regno++) |
| 355 | { |
| 356 | int ptrace_fun = PTRACE_POKEUSER; |
| 357 | |
| 358 | if (CANNOT_STORE_REGISTER (regno)) |
| 359 | continue; |
| 360 | |
| 361 | #ifdef M68K |
| 362 | ptrace_fun = regno == SP_REGNUM ? PTRACE_POKEUSP : PTRACE_POKEUSER; |
| 363 | #endif |
| 364 | |
| 365 | for (i = 0; i < register_size (current_gdbarch, regno); i += sizeof (int)) |
| 366 | { |
| 367 | unsigned int reg; |
| 368 | |
| 369 | reg = *(unsigned int *) &deprecated_registers[DEPRECATED_REGISTER_BYTE (regno) + i]; |
| 370 | |
| 371 | errno = 0; |
| 372 | ptrace (ptrace_fun, PIDGET (inferior_ptid), |
| 373 | (PTRACE_ARG3_TYPE) (ecp + regmap[regno] + i), reg); |
| 374 | if (errno) |
| 375 | perror_with_name ("ptrace(PTRACE_POKEUSP)"); |
| 376 | } |
| 377 | } |
| 378 | } |
| 379 | #endif /* defined (I386) || defined (M68K) || defined (rs6000) */ |
| 380 | |
| 381 | /* Wait for child to do something. Return pid of child, or -1 in case |
| 382 | of error; store status through argument pointer OURSTATUS. */ |
| 383 | |
| 384 | ptid_t |
| 385 | child_wait (ptid_t ptid, struct target_waitstatus *ourstatus) |
| 386 | { |
| 387 | int save_errno; |
| 388 | int thread; |
| 389 | union wait status; |
| 390 | int pid; |
| 391 | |
| 392 | while (1) |
| 393 | { |
| 394 | int sig; |
| 395 | |
| 396 | set_sigint_trap (); /* Causes SIGINT to be passed on to the |
| 397 | attached process. */ |
| 398 | pid = wait (&status); |
| 399 | |
| 400 | save_errno = errno; |
| 401 | |
| 402 | clear_sigint_trap (); |
| 403 | |
| 404 | if (pid == -1) |
| 405 | { |
| 406 | if (save_errno == EINTR) |
| 407 | continue; |
| 408 | fprintf_unfiltered (gdb_stderr, "Child process unexpectedly missing: %s.\n", |
| 409 | safe_strerror (save_errno)); |
| 410 | /* Claim it exited with unknown signal. */ |
| 411 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| 412 | ourstatus->value.sig = TARGET_SIGNAL_UNKNOWN; |
| 413 | return -1; |
| 414 | } |
| 415 | |
| 416 | if (pid != PIDGET (inferior_ptid)) /* Some other process?!? */ |
| 417 | continue; |
| 418 | |
| 419 | thread = status.w_tid; /* Get thread id from status */ |
| 420 | |
| 421 | /* Initial thread value can only be acquired via wait, so we have to |
| 422 | resort to this hack. */ |
| 423 | |
| 424 | if (TIDGET (inferior_ptid) == 0 && thread != 0) |
| 425 | { |
| 426 | inferior_ptid = MERGEPID (PIDGET (inferior_ptid), thread); |
| 427 | add_thread (inferior_ptid); |
| 428 | } |
| 429 | |
| 430 | ptid = BUILDPID (pid, thread); |
| 431 | |
| 432 | /* We've become a single threaded process again. */ |
| 433 | if (thread == 0) |
| 434 | inferior_ptid = ptid; |
| 435 | |
| 436 | /* Check for thread creation. */ |
| 437 | if (WIFSTOPPED (status) |
| 438 | && WSTOPSIG (status) == SIGTRAP |
| 439 | && !in_thread_list (ptid)) |
| 440 | { |
| 441 | int realsig; |
| 442 | |
| 443 | realsig = ptrace (PTRACE_GETTRACESIG, PIDGET (ptid), |
| 444 | (PTRACE_ARG3_TYPE) 0, 0); |
| 445 | |
| 446 | if (realsig == SIGNEWTHREAD) |
| 447 | { |
| 448 | /* It's a new thread notification. We don't want to much with |
| 449 | realsig -- the code in wait_for_inferior expects SIGTRAP. */ |
| 450 | ourstatus->kind = TARGET_WAITKIND_SPURIOUS; |
| 451 | ourstatus->value.sig = TARGET_SIGNAL_0; |
| 452 | return ptid; |
| 453 | } |
| 454 | else |
| 455 | error ("Signal for unknown thread was not SIGNEWTHREAD"); |
| 456 | } |
| 457 | |
| 458 | /* Check for thread termination. */ |
| 459 | else if (WIFSTOPPED (status) |
| 460 | && WSTOPSIG (status) == SIGTRAP |
| 461 | && in_thread_list (ptid)) |
| 462 | { |
| 463 | int realsig; |
| 464 | |
| 465 | realsig = ptrace (PTRACE_GETTRACESIG, PIDGET (ptid), |
| 466 | (PTRACE_ARG3_TYPE) 0, 0); |
| 467 | |
| 468 | if (realsig == SIGTHREADEXIT) |
| 469 | { |
| 470 | ptrace (PTRACE_CONT, PIDGET (ptid), (PTRACE_ARG3_TYPE) 0, 0); |
| 471 | continue; |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | #ifdef SPARC |
| 476 | /* SPARC Lynx uses an byte reversed wait status; we must use the |
| 477 | host macros to access it. These lines just a copy of |
| 478 | store_waitstatus. We can't use CHILD_SPECIAL_WAITSTATUS |
| 479 | because target.c can't include the Lynx <sys/wait.h>. */ |
| 480 | if (WIFEXITED (status)) |
| 481 | { |
| 482 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
| 483 | ourstatus->value.integer = WEXITSTATUS (status); |
| 484 | } |
| 485 | else if (!WIFSTOPPED (status)) |
| 486 | { |
| 487 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| 488 | ourstatus->value.sig = |
| 489 | target_signal_from_host (WTERMSIG (status)); |
| 490 | } |
| 491 | else |
| 492 | { |
| 493 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| 494 | ourstatus->value.sig = |
| 495 | target_signal_from_host (WSTOPSIG (status)); |
| 496 | } |
| 497 | #else |
| 498 | store_waitstatus (ourstatus, status.w_status); |
| 499 | #endif |
| 500 | |
| 501 | return ptid; |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | /* Return nonzero if the given thread is still alive. */ |
| 506 | int |
| 507 | child_thread_alive (ptid_t ptid) |
| 508 | { |
| 509 | int pid = PIDGET (ptid); |
| 510 | |
| 511 | /* Arggh. Apparently pthread_kill only works for threads within |
| 512 | the process that calls pthread_kill. |
| 513 | |
| 514 | We want to avoid the lynx signal extensions as they simply don't |
| 515 | map well to the generic gdb interface we want to keep. |
| 516 | |
| 517 | All we want to do is determine if a particular thread is alive; |
| 518 | it appears as if we can just make a harmless thread specific |
| 519 | ptrace call to do that. */ |
| 520 | return (ptrace (PTRACE_THREADUSER, pid, 0, 0) != -1); |
| 521 | } |
| 522 | |
| 523 | /* Resume execution of the inferior process. |
| 524 | If STEP is nonzero, single-step it. |
| 525 | If SIGNAL is nonzero, give it that signal. */ |
| 526 | |
| 527 | void |
| 528 | child_resume (ptid_t ptid, int step, enum target_signal signal) |
| 529 | { |
| 530 | int func; |
| 531 | int pid = PIDGET (ptid); |
| 532 | |
| 533 | errno = 0; |
| 534 | |
| 535 | /* If pid == -1, then we want to step/continue all threads, else |
| 536 | we only want to step/continue a single thread. */ |
| 537 | if (pid == -1) |
| 538 | { |
| 539 | pid = PIDGET (inferior_ptid); |
| 540 | func = step ? PTRACE_SINGLESTEP : PTRACE_CONT; |
| 541 | } |
| 542 | else |
| 543 | func = step ? PTRACE_SINGLESTEP_ONE : PTRACE_CONT_ONE; |
| 544 | |
| 545 | |
| 546 | /* An address of (PTRACE_ARG3_TYPE)1 tells ptrace to continue from where |
| 547 | it was. (If GDB wanted it to start some other way, we have already |
| 548 | written a new PC value to the child.) |
| 549 | |
| 550 | If this system does not support PT_STEP, a higher level function will |
| 551 | have called single_step() to transmute the step request into a |
| 552 | continue request (by setting breakpoints on all possible successor |
| 553 | instructions), so we don't have to worry about that here. */ |
| 554 | |
| 555 | ptrace (func, pid, (PTRACE_ARG3_TYPE) 1, target_signal_to_host (signal)); |
| 556 | |
| 557 | if (errno) |
| 558 | perror_with_name ("ptrace"); |
| 559 | } |
| 560 | |
| 561 | /* Convert a Lynx process ID to a string. Returns the string in a static |
| 562 | buffer. */ |
| 563 | |
| 564 | char * |
| 565 | child_pid_to_str (ptid_t ptid) |
| 566 | { |
| 567 | static char buf[40]; |
| 568 | |
| 569 | sprintf (buf, "process %d thread %d", PIDGET (ptid), TIDGET (ptid)); |
| 570 | |
| 571 | return buf; |
| 572 | } |
| 573 | |
| 574 | /* Extract the register values out of the core file and store |
| 575 | them where `read_register' will find them. |
| 576 | |
| 577 | CORE_REG_SECT points to the register values themselves, read into memory. |
| 578 | CORE_REG_SIZE is the size of that area. |
| 579 | WHICH says which set of registers we are handling (0 = int, 2 = float |
| 580 | on machines where they are discontiguous). |
| 581 | REG_ADDR is the offset from u.u_ar0 to the register values relative to |
| 582 | core_reg_sect. This is used with old-fashioned core files to |
| 583 | locate the registers in a large upage-plus-stack ".reg" section. |
| 584 | Original upage address X is at location core_reg_sect+x+reg_addr. |
| 585 | */ |
| 586 | |
| 587 | static void |
| 588 | fetch_core_registers (char *core_reg_sect, unsigned core_reg_size, int which, |
| 589 | CORE_ADDR reg_addr) |
| 590 | { |
| 591 | struct st_entry s; |
| 592 | unsigned int regno; |
| 593 | |
| 594 | for (regno = 0; regno < NUM_REGS; regno++) |
| 595 | if (regmap[regno] != -1) |
| 596 | regcache_raw_supply (current_regcache, regno, |
| 597 | core_reg_sect + offsetof (st_t, ec) + regmap[regno]); |
| 598 | |
| 599 | #ifdef SPARC |
| 600 | /* Fetching this register causes all of the I & L regs to be read from the |
| 601 | stack and validated. */ |
| 602 | |
| 603 | fetch_inferior_registers (I0_REGNUM); |
| 604 | #endif |
| 605 | } |
| 606 | \f |
| 607 | |
| 608 | /* Register that we are able to handle lynx core file formats. |
| 609 | FIXME: is this really bfd_target_unknown_flavour? */ |
| 610 | |
| 611 | static struct core_fns lynx_core_fns = |
| 612 | { |
| 613 | bfd_target_unknown_flavour, /* core_flavour */ |
| 614 | default_check_format, /* check_format */ |
| 615 | default_core_sniffer, /* core_sniffer */ |
| 616 | fetch_core_registers, /* core_read_registers */ |
| 617 | NULL /* next */ |
| 618 | }; |
| 619 | |
| 620 | void |
| 621 | _initialize_core_lynx (void) |
| 622 | { |
| 623 | deprecated_add_core_fns (&lynx_core_fns); |
| 624 | } |