| 1 | /* Convex stuff for GDB. |
| 2 | Copyright (C) 1990 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of GDB. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 2 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ |
| 19 | |
| 20 | #include <stdio.h> |
| 21 | #include "defs.h" |
| 22 | #include "param.h" |
| 23 | #include "command.h" |
| 24 | #include "symtab.h" |
| 25 | #include "value.h" |
| 26 | #include "frame.h" |
| 27 | #include "inferior.h" |
| 28 | #include "wait.h" |
| 29 | |
| 30 | #include <signal.h> |
| 31 | #include <fcntl.h> |
| 32 | |
| 33 | #include "gdbcore.h" |
| 34 | #include <sys/param.h> |
| 35 | #include <sys/dir.h> |
| 36 | #include <sys/user.h> |
| 37 | #include <sys/ioctl.h> |
| 38 | #include <sys/pcntl.h> |
| 39 | #include <sys/thread.h> |
| 40 | #include <sys/proc.h> |
| 41 | #include <sys/file.h> |
| 42 | #include <sys/stat.h> |
| 43 | #include <sys/mman.h> |
| 44 | |
| 45 | #include "gdbcmd.h" |
| 46 | |
| 47 | exec_file_command (filename, from_tty) |
| 48 | char *filename; |
| 49 | int from_tty; |
| 50 | { |
| 51 | int val; |
| 52 | int n; |
| 53 | struct stat st_exec; |
| 54 | |
| 55 | /* Eliminate all traces of old exec file. |
| 56 | Mark text segment as empty. */ |
| 57 | |
| 58 | if (execfile) |
| 59 | free (execfile); |
| 60 | execfile = 0; |
| 61 | data_start = 0; |
| 62 | data_end = 0; |
| 63 | text_start = 0; |
| 64 | text_end = 0; |
| 65 | exec_data_start = 0; |
| 66 | exec_data_end = 0; |
| 67 | if (execchan >= 0) |
| 68 | close (execchan); |
| 69 | execchan = -1; |
| 70 | |
| 71 | n_exec = 0; |
| 72 | |
| 73 | /* Now open and digest the file the user requested, if any. */ |
| 74 | |
| 75 | if (filename) |
| 76 | { |
| 77 | filename = tilde_expand (filename); |
| 78 | make_cleanup (free, filename); |
| 79 | |
| 80 | execchan = openp (getenv ("PATH"), 1, filename, O_RDONLY, 0, |
| 81 | &execfile); |
| 82 | if (execchan < 0) |
| 83 | perror_with_name (filename); |
| 84 | |
| 85 | if (myread (execchan, &filehdr, sizeof filehdr) < 0) |
| 86 | perror_with_name (filename); |
| 87 | |
| 88 | if (! IS_SOFF_MAGIC (filehdr.h_magic)) |
| 89 | error ("%s: not an executable file.", filename); |
| 90 | |
| 91 | if (myread (execchan, &opthdr, filehdr.h_opthdr) <= 0) |
| 92 | perror_with_name (filename); |
| 93 | |
| 94 | /* Read through the section headers. |
| 95 | For text, data, etc, record an entry in the exec file map. |
| 96 | Record text_start and text_end. */ |
| 97 | |
| 98 | lseek (execchan, (long) filehdr.h_scnptr, 0); |
| 99 | |
| 100 | for (n = 0; n < filehdr.h_nscns; n++) |
| 101 | { |
| 102 | if (myread (execchan, &scnhdr, sizeof scnhdr) < 0) |
| 103 | perror_with_name (filename); |
| 104 | |
| 105 | if ((scnhdr.s_flags & S_TYPMASK) >= S_TEXT |
| 106 | && (scnhdr.s_flags & S_TYPMASK) <= S_COMON) |
| 107 | { |
| 108 | exec_map[n_exec].mem_addr = scnhdr.s_vaddr; |
| 109 | exec_map[n_exec].mem_end = scnhdr.s_vaddr + scnhdr.s_size; |
| 110 | exec_map[n_exec].file_addr = scnhdr.s_scnptr; |
| 111 | exec_map[n_exec].type = scnhdr.s_flags & S_TYPMASK; |
| 112 | n_exec++; |
| 113 | |
| 114 | if ((scnhdr.s_flags & S_TYPMASK) == S_TEXT) |
| 115 | { |
| 116 | text_start = scnhdr.s_vaddr; |
| 117 | text_end = scnhdr.s_vaddr + scnhdr.s_size; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | fstat (execchan, &st_exec); |
| 123 | exec_mtime = st_exec.st_mtime; |
| 124 | |
| 125 | validate_files (); |
| 126 | } |
| 127 | else if (from_tty) |
| 128 | printf_filtered ("No exec file now.\n"); |
| 129 | |
| 130 | /* Tell display code (if any) about the changed file name. */ |
| 131 | if (exec_file_display_hook) |
| 132 | (*exec_file_display_hook) (filename); |
| 133 | } |
| 134 | |
| 135 | /* Read data from SOFF exec or core file. |
| 136 | Return 0 on success, EIO if address out of bounds. */ |
| 137 | |
| 138 | int |
| 139 | xfer_core_file (memaddr, myaddr, len) |
| 140 | CORE_ADDR memaddr; |
| 141 | char *myaddr; |
| 142 | int len; |
| 143 | { |
| 144 | register int i; |
| 145 | register int n; |
| 146 | register int val; |
| 147 | int xferchan; |
| 148 | char **xferfile; |
| 149 | int fileptr; |
| 150 | int returnval = 0; |
| 151 | |
| 152 | while (len > 0) |
| 153 | { |
| 154 | xferfile = 0; |
| 155 | xferchan = 0; |
| 156 | |
| 157 | /* Determine which file the next bunch of addresses reside in, |
| 158 | and where in the file. Set the file's read/write pointer |
| 159 | to point at the proper place for the desired address |
| 160 | and set xferfile and xferchan for the correct file. |
| 161 | If desired address is nonexistent, leave them zero. |
| 162 | i is set to the number of bytes that can be handled |
| 163 | along with the next address. */ |
| 164 | |
| 165 | i = len; |
| 166 | |
| 167 | for (n = 0; n < n_core; n++) |
| 168 | { |
| 169 | if (memaddr >= core_map[n].mem_addr && memaddr < core_map[n].mem_end |
| 170 | && (core_map[n].thread == -1 |
| 171 | || core_map[n].thread == inferior_thread)) |
| 172 | { |
| 173 | i = min (len, core_map[n].mem_end - memaddr); |
| 174 | fileptr = core_map[n].file_addr + memaddr - core_map[n].mem_addr; |
| 175 | if (core_map[n].file_addr) |
| 176 | { |
| 177 | xferfile = &corefile; |
| 178 | xferchan = corechan; |
| 179 | } |
| 180 | break; |
| 181 | } |
| 182 | else if (core_map[n].mem_addr >= memaddr |
| 183 | && core_map[n].mem_addr < memaddr + i) |
| 184 | i = core_map[n].mem_addr - memaddr; |
| 185 | } |
| 186 | |
| 187 | if (!xferfile) |
| 188 | for (n = 0; n < n_exec; n++) |
| 189 | { |
| 190 | if (memaddr >= exec_map[n].mem_addr |
| 191 | && memaddr < exec_map[n].mem_end) |
| 192 | { |
| 193 | i = min (len, exec_map[n].mem_end - memaddr); |
| 194 | fileptr = exec_map[n].file_addr + memaddr |
| 195 | - exec_map[n].mem_addr; |
| 196 | if (exec_map[n].file_addr) |
| 197 | { |
| 198 | xferfile = &execfile; |
| 199 | xferchan = execchan; |
| 200 | } |
| 201 | break; |
| 202 | } |
| 203 | else if (exec_map[n].mem_addr >= memaddr |
| 204 | && exec_map[n].mem_addr < memaddr + i) |
| 205 | i = exec_map[n].mem_addr - memaddr; |
| 206 | } |
| 207 | |
| 208 | /* Now we know which file to use. |
| 209 | Set up its pointer and transfer the data. */ |
| 210 | if (xferfile) |
| 211 | { |
| 212 | if (*xferfile == 0) |
| 213 | if (xferfile == &execfile) |
| 214 | error ("No program file to examine."); |
| 215 | else |
| 216 | error ("No core dump file or running program to examine."); |
| 217 | val = lseek (xferchan, fileptr, 0); |
| 218 | if (val < 0) |
| 219 | perror_with_name (*xferfile); |
| 220 | val = myread (xferchan, myaddr, i); |
| 221 | if (val < 0) |
| 222 | perror_with_name (*xferfile); |
| 223 | } |
| 224 | /* If this address is for nonexistent memory, |
| 225 | read zeros if reading, or do nothing if writing. */ |
| 226 | else |
| 227 | { |
| 228 | bzero (myaddr, i); |
| 229 | returnval = EIO; |
| 230 | } |
| 231 | |
| 232 | memaddr += i; |
| 233 | myaddr += i; |
| 234 | len -= i; |
| 235 | } |
| 236 | return returnval; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /* Here from info files command to print an address map. */ |
| 241 | |
| 242 | print_maps () |
| 243 | { |
| 244 | struct pmap ptrs[200]; |
| 245 | int n; |
| 246 | |
| 247 | /* ID strings for core and executable file sections */ |
| 248 | |
| 249 | static char *idstr[] = |
| 250 | { |
| 251 | "0", "text", "data", "tdata", "bss", "tbss", |
| 252 | "common", "ttext", "ctx", "tctx", "10", "11", "12", |
| 253 | }; |
| 254 | |
| 255 | for (n = 0; n < n_core; n++) |
| 256 | { |
| 257 | core_map[n].which = 0; |
| 258 | ptrs[n] = core_map[n]; |
| 259 | } |
| 260 | for (n = 0; n < n_exec; n++) |
| 261 | { |
| 262 | exec_map[n].which = 1; |
| 263 | ptrs[n_core+n] = exec_map[n]; |
| 264 | } |
| 265 | |
| 266 | qsort (ptrs, n_core + n_exec, sizeof *ptrs, ptr_cmp); |
| 267 | |
| 268 | for (n = 0; n < n_core + n_exec; n++) |
| 269 | { |
| 270 | struct pmap *p = &ptrs[n]; |
| 271 | if (n > 0) |
| 272 | { |
| 273 | if (p->mem_addr < ptrs[n-1].mem_end) |
| 274 | p->mem_addr = ptrs[n-1].mem_end; |
| 275 | if (p->mem_addr >= p->mem_end) |
| 276 | continue; |
| 277 | } |
| 278 | printf_filtered ("%08x .. %08x %-6s %s\n", |
| 279 | p->mem_addr, p->mem_end, idstr[p->type], |
| 280 | p->which ? execfile : corefile); |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | /* Compare routine to put file sections in order. |
| 285 | Sort into increasing order on address, and put core file sections |
| 286 | before exec file sections if both files contain the same addresses. */ |
| 287 | |
| 288 | static ptr_cmp (a, b) |
| 289 | struct pmap *a, *b; |
| 290 | { |
| 291 | if (a->mem_addr != b->mem_addr) return a->mem_addr - b->mem_addr; |
| 292 | return a->which - b->which; |
| 293 | } |
| 294 | \f |
| 295 | /* Trapped internal variables are used to handle special registers. |
| 296 | A trapped i.v. calls a hook here every time it is dereferenced, |
| 297 | to provide a new value for the variable, and it calls a hook here |
| 298 | when a new value is assigned, to do something with the value. |
| 299 | |
| 300 | The vector registers are $vl, $vs, $vm, $vN, $VN (N in 0..7). |
| 301 | The communication registers are $cN, $CN (N in 0..63). |
| 302 | They not handled as regular registers because it's expensive to |
| 303 | read them, and their size varies, and they have too many names. */ |
| 304 | |
| 305 | |
| 306 | /* Return 1 if NAME is a trapped internal variable, else 0. */ |
| 307 | |
| 308 | int |
| 309 | is_trapped_internalvar (name) |
| 310 | char *name; |
| 311 | { |
| 312 | if ((name[0] == 'c' || name[0] == 'C') |
| 313 | && name[1] >= '0' && name[1] <= '9' |
| 314 | && (name[2] == '\0' |
| 315 | || (name[2] >= '0' && name[2] <= '9' |
| 316 | && name[3] == '\0' && name[1] != '0')) |
| 317 | && atoi (&name[1]) < 64) return 1; |
| 318 | |
| 319 | if ((name[0] == 'v' || name[0] == 'V') |
| 320 | && (((name[1] & -8) == '0' && name[2] == '\0') |
| 321 | || !strcmp (name, "vl") |
| 322 | || !strcmp (name, "vs") |
| 323 | || !strcmp (name, "vm"))) |
| 324 | return 1; |
| 325 | else return 0; |
| 326 | } |
| 327 | |
| 328 | /* Return the value of trapped internal variable VAR */ |
| 329 | |
| 330 | value |
| 331 | value_of_trapped_internalvar (var) |
| 332 | struct internalvar *var; |
| 333 | { |
| 334 | char *name = var->name; |
| 335 | value val; |
| 336 | struct type *type; |
| 337 | long len = *read_vector_register (VL_REGNUM); |
| 338 | if (len <= 0 || len > 128) len = 128; |
| 339 | |
| 340 | if (!strcmp (name, "vl")) |
| 341 | { |
| 342 | val = value_from_long (builtin_type_int, |
| 343 | (LONGEST) *read_vector_register_1 (VL_REGNUM)); |
| 344 | } |
| 345 | else if (!strcmp (name, "vs")) |
| 346 | { |
| 347 | val = value_from_long (builtin_type_int, |
| 348 | (LONGEST) *read_vector_register_1 (VS_REGNUM)); |
| 349 | } |
| 350 | else if (!strcmp (name, "vm")) |
| 351 | { |
| 352 | long vm[4]; |
| 353 | long i, *p; |
| 354 | bcopy (read_vector_register_1 (VM_REGNUM), vm, sizeof vm); |
| 355 | type = vector_type (builtin_type_int, len); |
| 356 | val = allocate_value (type); |
| 357 | p = (long *) VALUE_CONTENTS (val); |
| 358 | for (i = 0; i < len; i++) |
| 359 | *p++ = !! (vm[3 - (i >> 5)] & (1 << (i & 037))); |
| 360 | } |
| 361 | else if (name[0] == 'V') |
| 362 | { |
| 363 | type = vector_type (builtin_type_long_long, len); |
| 364 | val = allocate_value (type); |
| 365 | bcopy (read_vector_register_1 (name[1] - '0'), |
| 366 | VALUE_CONTENTS (val), TYPE_LENGTH (type)); |
| 367 | } |
| 368 | else if (name[0] == 'v') |
| 369 | { |
| 370 | long *p1, *p2; |
| 371 | type = vector_type (builtin_type_long, len); |
| 372 | val = allocate_value (type); |
| 373 | p1 = read_vector_register_1 (name[1] - '0'); |
| 374 | p2 = (long *) VALUE_CONTENTS (val); |
| 375 | while (--len >= 0) {p1++; *p2++ = *p1++;} |
| 376 | } |
| 377 | |
| 378 | else if (name[0] == 'c') |
| 379 | val = value_from_long (builtin_type_int, |
| 380 | read_comm_register (atoi (&name[1]))); |
| 381 | else if (name[0] == 'C') |
| 382 | val = value_from_long (builtin_type_long_long, |
| 383 | read_comm_register (atoi (&name[1]))); |
| 384 | |
| 385 | VALUE_LVAL (val) = lval_internalvar; |
| 386 | VALUE_INTERNALVAR (val) = var; |
| 387 | return val; |
| 388 | } |
| 389 | |
| 390 | /* Construct the type for a vector register's value -- |
| 391 | array[LENGTH] of ELEMENT_TYPE. */ |
| 392 | |
| 393 | static struct type * |
| 394 | vector_type (element_type, length) |
| 395 | struct type *element_type; |
| 396 | long length; |
| 397 | { |
| 398 | struct type *type = (struct type *) xmalloc (sizeof (struct type)); |
| 399 | bzero (type, sizeof type); |
| 400 | TYPE_CODE (type) = TYPE_CODE_ARRAY; |
| 401 | TYPE_TARGET_TYPE (type) = element_type; |
| 402 | TYPE_LENGTH (type) = length * TYPE_LENGTH (TYPE_TARGET_TYPE (type)); |
| 403 | return type; |
| 404 | } |
| 405 | |
| 406 | /* Handle a new value assigned to a trapped internal variable */ |
| 407 | |
| 408 | void |
| 409 | set_trapped_internalvar (var, val, bitpos, bitsize, offset) |
| 410 | struct internalvar *var; |
| 411 | value val; |
| 412 | int bitpos, bitsize, offset; |
| 413 | { |
| 414 | char *name = var->name; |
| 415 | long long newval = value_as_long (val); |
| 416 | |
| 417 | if (!strcmp (name, "vl")) |
| 418 | write_vector_register (VL_REGNUM, 0, newval); |
| 419 | else if (!strcmp (name, "vs")) |
| 420 | write_vector_register (VS_REGNUM, 0, newval); |
| 421 | else if (name[0] == 'c' || name[0] == 'C') |
| 422 | write_comm_register (atoi (&name[1]), newval); |
| 423 | else if (!strcmp (name, "vm")) |
| 424 | error ("can't assign to $vm"); |
| 425 | else |
| 426 | { |
| 427 | offset /= bitsize / 8; |
| 428 | write_vector_register (name[1] - '0', offset, newval); |
| 429 | } |
| 430 | } |
| 431 | |
| 432 | /* Print an integer value when no format was specified. gdb normally |
| 433 | prints these values in decimal, but the the leading 0x80000000 of |
| 434 | pointers produces intolerable 10-digit negative numbers. |
| 435 | If it looks like an address, print it in hex instead. */ |
| 436 | |
| 437 | decout (stream, type, val) |
| 438 | FILE *stream; |
| 439 | struct type *type; |
| 440 | LONGEST val; |
| 441 | { |
| 442 | long lv = val; |
| 443 | |
| 444 | switch (output_radix) |
| 445 | { |
| 446 | case 0: |
| 447 | if ((lv == val || (unsigned) lv == val) |
| 448 | && ((lv & 0xf0000000) == 0x80000000 |
| 449 | || ((lv & 0xf0000000) == 0xf0000000 && lv < STACK_END_ADDR))) |
| 450 | { |
| 451 | fprintf_filtered (stream, "%#x", lv); |
| 452 | return; |
| 453 | } |
| 454 | |
| 455 | case 10: |
| 456 | fprintf_filtered (stream, TYPE_UNSIGNED (type) ? "%llu" : "%lld", val); |
| 457 | return; |
| 458 | |
| 459 | case 8: |
| 460 | if (TYPE_LENGTH (type) <= sizeof lv) |
| 461 | fprintf_filtered (stream, "%#o", lv); |
| 462 | else |
| 463 | fprintf_filtered (stream, "%#llo", val); |
| 464 | return; |
| 465 | |
| 466 | case 16: |
| 467 | if (TYPE_LENGTH (type) <= sizeof lv) |
| 468 | fprintf_filtered (stream, "%#x", lv); |
| 469 | else |
| 470 | fprintf_filtered (stream, "%#llx", val); |
| 471 | return; |
| 472 | } |
| 473 | } |
| 474 | |
| 475 | /* Change the default output radix to 10 or 16, or set it to 0 (heuristic). |
| 476 | This command is mostly obsolete now that the print command allows |
| 477 | formats to apply to aggregates, but is still handy occasionally. */ |
| 478 | |
| 479 | static void |
| 480 | set_base_command (arg) |
| 481 | char *arg; |
| 482 | { |
| 483 | int new_radix; |
| 484 | |
| 485 | if (!arg) |
| 486 | output_radix = 0; |
| 487 | else |
| 488 | { |
| 489 | new_radix = atoi (arg); |
| 490 | if (new_radix != 10 && new_radix != 16 && new_radix != 8) |
| 491 | error ("base must be 8, 10 or 16, or null"); |
| 492 | else output_radix = new_radix; |
| 493 | } |
| 494 | } |
| 495 | |
| 496 | /* Turn pipelining on or off in the inferior. */ |
| 497 | |
| 498 | static void |
| 499 | set_pipelining_command (arg) |
| 500 | char *arg; |
| 501 | { |
| 502 | if (!arg) |
| 503 | { |
| 504 | sequential = !sequential; |
| 505 | printf_filtered ("%s\n", sequential ? "off" : "on"); |
| 506 | } |
| 507 | else if (!strcmp (arg, "on")) |
| 508 | sequential = 0; |
| 509 | else if (!strcmp (arg, "off")) |
| 510 | sequential = 1; |
| 511 | else error ("valid args are `on', to allow instructions to overlap, or\n\ |
| 512 | `off', to prevent it and thereby pinpoint exceptions."); |
| 513 | } |
| 514 | |
| 515 | /* Enable, disable, or force parallel execution in the inferior. */ |
| 516 | |
| 517 | static void |
| 518 | set_parallel_command (arg) |
| 519 | char *arg; |
| 520 | { |
| 521 | struct rlimit rl; |
| 522 | int prevparallel = parallel; |
| 523 | |
| 524 | if (!strncmp (arg, "fixed", strlen (arg))) |
| 525 | parallel = 2; |
| 526 | else if (!strcmp (arg, "on")) |
| 527 | parallel = 1; |
| 528 | else if (!strcmp (arg, "off")) |
| 529 | parallel = 0; |
| 530 | else error ("valid args are `on', to allow multiple threads, or\n\ |
| 531 | `fixed', to force multiple threads, or\n\ |
| 532 | `off', to run with one thread only."); |
| 533 | |
| 534 | if ((prevparallel == 0) != (parallel == 0) && inferior_pid) |
| 535 | printf_filtered ("will take effect at next run.\n"); |
| 536 | |
| 537 | getrlimit (RLIMIT_CONCUR, &rl); |
| 538 | rl.rlim_cur = parallel ? rl.rlim_max : 1; |
| 539 | setrlimit (RLIMIT_CONCUR, &rl); |
| 540 | |
| 541 | if (inferior_pid) |
| 542 | set_fixed_scheduling (inferior_pid, parallel == 2); |
| 543 | } |
| 544 | |
| 545 | /* Add a new name for an existing command. */ |
| 546 | |
| 547 | static void |
| 548 | alias_command (arg) |
| 549 | char *arg; |
| 550 | { |
| 551 | static char *aliaserr = "usage is `alias NEW OLD', no args allowed"; |
| 552 | char *newname = arg; |
| 553 | struct cmd_list_element *new, *old; |
| 554 | |
| 555 | if (!arg) |
| 556 | error_no_arg ("newname oldname"); |
| 557 | |
| 558 | new = lookup_cmd (&arg, cmdlist, "", -1); |
| 559 | if (new && !strncmp (newname, new->name, strlen (new->name))) |
| 560 | { |
| 561 | newname = new->name; |
| 562 | if (!(*arg == '-' |
| 563 | || (*arg >= 'a' && *arg <= 'z') |
| 564 | || (*arg >= 'A' && *arg <= 'Z') |
| 565 | || (*arg >= '0' && *arg <= '9'))) |
| 566 | error (aliaserr); |
| 567 | } |
| 568 | else |
| 569 | { |
| 570 | arg = newname; |
| 571 | while (*arg == '-' |
| 572 | || (*arg >= 'a' && *arg <= 'z') |
| 573 | || (*arg >= 'A' && *arg <= 'Z') |
| 574 | || (*arg >= '0' && *arg <= '9')) |
| 575 | arg++; |
| 576 | if (*arg != ' ' && *arg != '\t') |
| 577 | error (aliaserr); |
| 578 | *arg = '\0'; |
| 579 | arg++; |
| 580 | } |
| 581 | |
| 582 | old = lookup_cmd (&arg, cmdlist, "", 0); |
| 583 | |
| 584 | if (*arg != '\0') |
| 585 | error (aliaserr); |
| 586 | |
| 587 | if (new && !strncmp (newname, new->name, strlen (new->name))) |
| 588 | { |
| 589 | char *tem; |
| 590 | if (new->class == (int) class_user || new->class == (int) class_alias) |
| 591 | tem = "Redefine command \"%s\"? "; |
| 592 | else |
| 593 | tem = "Really redefine built-in command \"%s\"? "; |
| 594 | if (!query (tem, new->name)) |
| 595 | error ("Command \"%s\" not redefined.", new->name); |
| 596 | } |
| 597 | |
| 598 | add_com (newname, class_alias, old->function, old->doc); |
| 599 | } |
| 600 | |
| 601 | |
| 602 | |
| 603 | /* Print the current thread number, and any threads with signals in the |
| 604 | queue. */ |
| 605 | |
| 606 | thread_info () |
| 607 | { |
| 608 | struct threadpid *p; |
| 609 | |
| 610 | if (have_inferior_p ()) |
| 611 | { |
| 612 | ps.pi_buffer = (char *) &comm_registers; |
| 613 | ps.pi_nbytes = sizeof comm_registers; |
| 614 | ps.pi_offset = 0; |
| 615 | ps.pi_thread = inferior_thread; |
| 616 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
| 617 | } |
| 618 | |
| 619 | printf_filtered ("Current thread %d stopped with signal %d.%d (%s).\n", |
| 620 | inferior_thread, stop_signal, stop_sigcode, |
| 621 | subsig_name (stop_signal, stop_sigcode)); |
| 622 | |
| 623 | for (p = signal_stack; p->pid; p--) |
| 624 | printf_filtered ("Thread %d stopped with signal %d.%d (%s).\n", |
| 625 | p->thread, p->signo, p->subsig, |
| 626 | subsig_name (p->signo, p->subsig)); |
| 627 | |
| 628 | if (iscrlbit (comm_registers.crctl.lbits.cc, 64+13)) |
| 629 | printf_filtered ("New thread start pc %#x\n", |
| 630 | (long) (comm_registers.crreg.pcpsw >> 32)); |
| 631 | } |
| 632 | |
| 633 | /* Return string describing a signal.subcode number */ |
| 634 | |
| 635 | static char * |
| 636 | subsig_name (signo, subcode) |
| 637 | int signo, subcode; |
| 638 | { |
| 639 | static char *subsig4[] = { |
| 640 | "error exit", "privileged instruction", "unknown", |
| 641 | "unknown", "undefined opcode", |
| 642 | 0}; |
| 643 | static char *subsig5[] = {0, |
| 644 | "breakpoint", "single step", "fork trap", "exec trap", "pfork trap", |
| 645 | "join trap", "idle trap", "last thread", "wfork trap", |
| 646 | "process breakpoint", "trap instruction", |
| 647 | 0}; |
| 648 | static char *subsig8[] = {0, |
| 649 | "int overflow", "int divide check", "float overflow", |
| 650 | "float divide check", "float underflow", "reserved operand", |
| 651 | "sqrt error", "exp error", "ln error", "sin error", "cos error", |
| 652 | 0}; |
| 653 | static char *subsig10[] = {0, |
| 654 | "invalid inward ring address", "invalid outward ring call", |
| 655 | "invalid inward ring return", "invalid syscall gate", |
| 656 | "invalid rtn frame length", "invalid comm reg address", |
| 657 | "invalid trap gate", |
| 658 | 0}; |
| 659 | static char *subsig11[] = {0, |
| 660 | "read access denied", "write access denied", "execute access denied", |
| 661 | "segment descriptor fault", "page table fault", "data reference fault", |
| 662 | "i/o access denied", "levt pte invalid", |
| 663 | 0}; |
| 664 | |
| 665 | static char **subsig_list[] = |
| 666 | {0, 0, 0, 0, subsig4, subsig5, 0, 0, subsig8, 0, subsig10, subsig11, 0}; |
| 667 | |
| 668 | int i; |
| 669 | char *p = signo < NSIG ? sys_siglist[signo] : "unknown"; |
| 670 | |
| 671 | if (signo >= (sizeof subsig_list / sizeof *subsig_list) |
| 672 | || !subsig_list[signo]) |
| 673 | return p; |
| 674 | for (i = 1; subsig_list[signo][i]; i++) |
| 675 | if (i == subcode) |
| 676 | return subsig_list[signo][subcode]; |
| 677 | return p; |
| 678 | } |
| 679 | |
| 680 | |
| 681 | /* Print a compact display of thread status, essentially x/i $pc |
| 682 | for all active threads. */ |
| 683 | |
| 684 | static void |
| 685 | threadstat () |
| 686 | { |
| 687 | int t; |
| 688 | |
| 689 | for (t = 0; t < n_threads; t++) |
| 690 | if (thread_state[t] == PI_TALIVE) |
| 691 | { |
| 692 | printf_filtered ("%d%c %08x%c %d.%d ", t, |
| 693 | (t == inferior_thread ? '*' : ' '), thread_pc[t], |
| 694 | (thread_is_in_kernel[t] ? '#' : ' '), |
| 695 | thread_signal[t], thread_sigcode[t]); |
| 696 | print_insn (thread_pc[t], stdout); |
| 697 | printf_filtered ("\n"); |
| 698 | } |
| 699 | } |
| 700 | |
| 701 | /* Change the current thread to ARG. */ |
| 702 | |
| 703 | set_thread_command (arg) |
| 704 | char *arg; |
| 705 | { |
| 706 | int thread; |
| 707 | |
| 708 | if (!arg) |
| 709 | { |
| 710 | threadstat (); |
| 711 | return; |
| 712 | } |
| 713 | |
| 714 | thread = parse_and_eval_address (arg); |
| 715 | |
| 716 | if (thread < 0 || thread > n_threads || thread_state[thread] != PI_TALIVE) |
| 717 | error ("no such thread."); |
| 718 | |
| 719 | select_thread (thread); |
| 720 | |
| 721 | stop_pc = read_pc (); |
| 722 | flush_cached_frames (); |
| 723 | set_current_frame (create_new_frame (read_register (FP_REGNUM), |
| 724 | read_pc ())); |
| 725 | select_frame (get_current_frame (), 0); |
| 726 | print_sel_frame (1); |
| 727 | } |
| 728 | |
| 729 | /* Here on CONT command; gdb's dispatch address is changed to come here. |
| 730 | Set global variable ALL_CONTINUE to tell resume() that it should |
| 731 | start up all threads, and that a thread switch will not blow gdb's |
| 732 | mind. */ |
| 733 | |
| 734 | static void |
| 735 | convex_cont_command (proc_count_exp, from_tty) |
| 736 | char *proc_count_exp; |
| 737 | int from_tty; |
| 738 | { |
| 739 | all_continue = 1; |
| 740 | cont_command (proc_count_exp, from_tty); |
| 741 | } |
| 742 | |
| 743 | /* Here on 1CONT command. Resume only the current thread. */ |
| 744 | |
| 745 | one_cont_command (proc_count_exp, from_tty) |
| 746 | char *proc_count_exp; |
| 747 | int from_tty; |
| 748 | { |
| 749 | cont_command (proc_count_exp, from_tty); |
| 750 | } |
| 751 | |
| 752 | /* Print the contents and lock bits of all communication registers, |
| 753 | or just register ARG if ARG is a communication register, |
| 754 | or the 3-word resource structure in memory at address ARG. */ |
| 755 | |
| 756 | comm_registers_info (arg) |
| 757 | char *arg; |
| 758 | { |
| 759 | int i, regnum; |
| 760 | |
| 761 | if (arg) |
| 762 | { |
| 763 | if (sscanf (arg, "0x%x", ®num) == 1 |
| 764 | || sscanf (arg, "%d", ®num) == 1) |
| 765 | { |
| 766 | if (regnum > 0) |
| 767 | regnum &= ~0x8000; |
| 768 | } |
| 769 | else if (sscanf (arg, "$c%d", ®num) == 1) |
| 770 | ; |
| 771 | else if (sscanf (arg, "$C%d", ®num) == 1) |
| 772 | ; |
| 773 | else |
| 774 | regnum = parse_and_eval_address (arg); |
| 775 | |
| 776 | if (regnum >= 64) |
| 777 | error ("%s: invalid register name.", arg); |
| 778 | |
| 779 | /* if we got a (user) address, examine the resource struct there */ |
| 780 | |
| 781 | if (regnum < 0) |
| 782 | { |
| 783 | static int buf[3]; |
| 784 | read_memory (regnum, buf, sizeof buf); |
| 785 | printf_filtered ("%08x %08x%08x%s\n", regnum, buf[1], buf[2], |
| 786 | buf[0] & 0xff ? " locked" : ""); |
| 787 | return; |
| 788 | } |
| 789 | } |
| 790 | |
| 791 | ps.pi_buffer = (char *) &comm_registers; |
| 792 | ps.pi_nbytes = sizeof comm_registers; |
| 793 | ps.pi_offset = 0; |
| 794 | ps.pi_thread = inferior_thread; |
| 795 | ioctl (inferior_fd, PIXRDCREGS, &ps); |
| 796 | |
| 797 | for (i = 0; i < 64; i++) |
| 798 | if (!arg || i == regnum) |
| 799 | printf_filtered ("%2d 0x8%03x %016llx%s\n", i, i, |
| 800 | comm_registers.crreg.r4[i], |
| 801 | (iscrlbit (comm_registers.crctl.lbits.cc, i) |
| 802 | ? " locked" : "")); |
| 803 | } |
| 804 | |
| 805 | /* Print the psw */ |
| 806 | |
| 807 | static void |
| 808 | psw_info (arg) |
| 809 | char *arg; |
| 810 | { |
| 811 | struct pswbit |
| 812 | { |
| 813 | int bit; |
| 814 | int pos; |
| 815 | char *text; |
| 816 | }; |
| 817 | |
| 818 | static struct pswbit pswbit[] = |
| 819 | { |
| 820 | { 0x80000000, -1, "A carry" }, |
| 821 | { 0x40000000, -1, "A integer overflow" }, |
| 822 | { 0x20000000, -1, "A zero divide" }, |
| 823 | { 0x10000000, -1, "Integer overflow enable" }, |
| 824 | { 0x08000000, -1, "Trace" }, |
| 825 | { 0x06000000, 25, "Frame length" }, |
| 826 | { 0x01000000, -1, "Sequential" }, |
| 827 | { 0x00800000, -1, "S carry" }, |
| 828 | { 0x00400000, -1, "S integer overflow" }, |
| 829 | { 0x00200000, -1, "S zero divide" }, |
| 830 | { 0x00100000, -1, "Zero divide enable" }, |
| 831 | { 0x00080000, -1, "Floating underflow" }, |
| 832 | { 0x00040000, -1, "Floating overflow" }, |
| 833 | { 0x00020000, -1, "Floating reserved operand" }, |
| 834 | { 0x00010000, -1, "Floating zero divide" }, |
| 835 | { 0x00008000, -1, "Floating error enable" }, |
| 836 | { 0x00004000, -1, "Floating underflow enable" }, |
| 837 | { 0x00002000, -1, "IEEE" }, |
| 838 | { 0x00001000, -1, "Sequential stores" }, |
| 839 | { 0x00000800, -1, "Intrinsic error" }, |
| 840 | { 0x00000400, -1, "Intrinsic error enable" }, |
| 841 | { 0x00000200, -1, "Trace thread creates" }, |
| 842 | { 0x00000100, -1, "Thread init trap" }, |
| 843 | { 0x000000e0, 5, "Reserved" }, |
| 844 | { 0x0000001f, 0, "Intrinsic error code" }, |
| 845 | {0, 0, 0}, |
| 846 | }; |
| 847 | |
| 848 | long psw; |
| 849 | struct pswbit *p; |
| 850 | |
| 851 | if (arg) |
| 852 | psw = parse_and_eval_address (arg); |
| 853 | else |
| 854 | psw = read_register (PS_REGNUM); |
| 855 | |
| 856 | for (p = pswbit; p->bit; p++) |
| 857 | { |
| 858 | if (p->pos < 0) |
| 859 | printf_filtered ("%08x %s %s\n", p->bit, |
| 860 | (psw & p->bit) ? "yes" : "no ", p->text); |
| 861 | else |
| 862 | printf_filtered ("%08x %3d %s\n", p->bit, |
| 863 | (psw & p->bit) >> p->pos, p->text); |
| 864 | } |
| 865 | } |
| 866 | \f |
| 867 | _initialize_convex_dep () |
| 868 | { |
| 869 | add_com ("alias", class_support, alias_command, |
| 870 | "Add a new name for an existing command."); |
| 871 | |
| 872 | add_cmd ("base", class_vars, set_base_command, |
| 873 | "Change the integer output radix to 8, 10 or 16\n\ |
| 874 | or use just `set base' with no args to return to the ad-hoc default,\n\ |
| 875 | which is 16 for integers that look like addresses, 10 otherwise.", |
| 876 | &setlist); |
| 877 | |
| 878 | add_cmd ("pipeline", class_run, set_pipelining_command, |
| 879 | "Enable or disable overlapped execution of instructions.\n\ |
| 880 | With `set pipe off', exceptions are reported with\n\ |
| 881 | $pc pointing at the instruction after the faulting one.\n\ |
| 882 | The default is `set pipe on', which runs faster.", |
| 883 | &setlist); |
| 884 | |
| 885 | add_cmd ("parallel", class_run, set_parallel_command, |
| 886 | "Enable or disable multi-threaded execution of parallel code.\n\ |
| 887 | `set parallel off' means run the program on a single CPU.\n\ |
| 888 | `set parallel fixed' means run the program with all CPUs assigned to it.\n\ |
| 889 | `set parallel on' means run the program on any CPUs that are available.", |
| 890 | &setlist); |
| 891 | |
| 892 | add_com ("1cont", class_run, one_cont_command, |
| 893 | "Continue the program, activating only the current thread.\n\ |
| 894 | Args are the same as the `cont' command."); |
| 895 | |
| 896 | add_com ("thread", class_run, set_thread_command, |
| 897 | "Change the current thread, the one under scrutiny and control.\n\ |
| 898 | With no arg, show the active threads, the current one marked with *."); |
| 899 | |
| 900 | add_info ("threads", thread_info, |
| 901 | "List status of active threads."); |
| 902 | |
| 903 | add_info ("comm-registers", comm_registers_info, |
| 904 | "List communication registers and their contents.\n\ |
| 905 | A communication register name as argument means describe only that register.\n\ |
| 906 | An address as argument means describe the resource structure at that address.\n\ |
| 907 | `Locked' means that the register has been sent to but not yet received from."); |
| 908 | |
| 909 | add_info ("psw", psw_info, |
| 910 | "Display $ps, the processor status word, bit by bit.\n\ |
| 911 | An argument means display that value's interpretation as a psw."); |
| 912 | |
| 913 | add_cmd ("convex", no_class, 0, "Convex-specific commands.\n\ |
| 914 | 32-bit registers $pc $ps $sp $ap $fp $a1-5 $s0-7 $v0-7 $vl $vs $vm $c0-63\n\ |
| 915 | 64-bit registers $S0-7 $V0-7 $C0-63\n\ |
| 916 | \n\ |
| 917 | info threads display info on stopped threads waiting to signal\n\ |
| 918 | thread display list of active threads\n\ |
| 919 | thread N select thread N (its registers, stack, memory, etc.)\n\ |
| 920 | step, next, etc step selected thread only\n\ |
| 921 | 1cont continue selected thread only\n\ |
| 922 | cont continue all threads\n\ |
| 923 | info comm-registers display contents of comm register(s) or a resource struct\n\ |
| 924 | info psw display processor status word $ps\n\ |
| 925 | set base N change integer radix used by `print' without a format\n\ |
| 926 | set pipeline off exceptions are precise, $pc points after the faulting insn\n\ |
| 927 | set pipeline on normal mode, $pc is somewhere ahead of faulting insn\n\ |
| 928 | set parallel off program runs on a single CPU\n\ |
| 929 | set parallel fixed all CPUs are assigned to the program\n\ |
| 930 | set parallel on normal mode, parallel execution on random available CPUs\n\ |
| 931 | ", |
| 932 | &cmdlist); |
| 933 | |
| 934 | } |