| 1 | /* Work with executable files, for GDB. |
| 2 | Copyright 1988, 1989, 1991, 1992, 1993, 1994 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 "defs.h" |
| 21 | #include "frame.h" |
| 22 | #include "inferior.h" |
| 23 | #include "target.h" |
| 24 | #include "gdbcmd.h" |
| 25 | #include "language.h" |
| 26 | #include "symfile.h" |
| 27 | #include "objfiles.h" |
| 28 | |
| 29 | #ifdef USG |
| 30 | #include <sys/types.h> |
| 31 | #endif |
| 32 | |
| 33 | #include <sys/param.h> |
| 34 | #include <fcntl.h> |
| 35 | #include <string.h> |
| 36 | |
| 37 | #include "gdbcore.h" |
| 38 | |
| 39 | #include <ctype.h> |
| 40 | #include <sys/stat.h> |
| 41 | #ifndef O_BINARY |
| 42 | #define O_BINARY 0 |
| 43 | #endif |
| 44 | |
| 45 | #include "xcoffsolib.h" |
| 46 | |
| 47 | struct vmap *map_vmap PARAMS ((bfd *, bfd *)); |
| 48 | |
| 49 | /* Prototypes for local functions */ |
| 50 | |
| 51 | static void add_to_section_table PARAMS ((bfd *, sec_ptr, PTR)); |
| 52 | |
| 53 | static void exec_close PARAMS ((int)); |
| 54 | |
| 55 | static void file_command PARAMS ((char *, int)); |
| 56 | |
| 57 | static void set_section_command PARAMS ((char *, int)); |
| 58 | |
| 59 | static void exec_files_info PARAMS ((struct target_ops *)); |
| 60 | |
| 61 | extern int info_verbose; |
| 62 | |
| 63 | /* The Binary File Descriptor handle for the executable file. */ |
| 64 | |
| 65 | bfd *exec_bfd = NULL; |
| 66 | |
| 67 | /* Whether to open exec and core files read-only or read-write. */ |
| 68 | |
| 69 | int write_files = 0; |
| 70 | |
| 71 | /* Text start and end addresses (KLUDGE) if needed */ |
| 72 | |
| 73 | #ifdef NEED_TEXT_START_END |
| 74 | CORE_ADDR text_start = 0; |
| 75 | CORE_ADDR text_end = 0; |
| 76 | #endif |
| 77 | |
| 78 | struct vmap *vmap; |
| 79 | |
| 80 | /* Forward decl */ |
| 81 | |
| 82 | extern struct target_ops exec_ops; |
| 83 | |
| 84 | /* ARGSUSED */ |
| 85 | static void |
| 86 | exec_close (quitting) |
| 87 | int quitting; |
| 88 | { |
| 89 | int need_symtab_cleanup = 0; |
| 90 | struct vmap *vp, *nxt; |
| 91 | |
| 92 | for (nxt = vmap; nxt != NULL; ) |
| 93 | { |
| 94 | vp = nxt; |
| 95 | nxt = vp->nxt; |
| 96 | |
| 97 | /* if there is an objfile associated with this bfd, |
| 98 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
| 99 | |
| 100 | if (vp->objfile) |
| 101 | { |
| 102 | free_objfile (vp->objfile); |
| 103 | need_symtab_cleanup = 1; |
| 104 | } |
| 105 | else if (vp->bfd != exec_bfd) |
| 106 | /* FIXME-leak: We should be freeing vp->name too, I think. */ |
| 107 | if (!bfd_close (vp->bfd)) |
| 108 | warning ("cannot close \"%s\": %s", |
| 109 | vp->name, bfd_errmsg (bfd_get_error ())); |
| 110 | |
| 111 | /* FIXME: This routine is #if 0'd in symfile.c. What should we |
| 112 | be doing here? Should we just free everything in |
| 113 | vp->objfile->symtabs? Should free_objfile do that? |
| 114 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't |
| 115 | valid here. */ |
| 116 | free_named_symtabs (vp->name); |
| 117 | free (vp); |
| 118 | } |
| 119 | |
| 120 | vmap = NULL; |
| 121 | |
| 122 | if (exec_bfd) |
| 123 | { |
| 124 | char *name = bfd_get_filename (exec_bfd); |
| 125 | |
| 126 | if (!bfd_close (exec_bfd)) |
| 127 | warning ("cannot close \"%s\": %s", |
| 128 | name, bfd_errmsg (bfd_get_error ())); |
| 129 | free (name); |
| 130 | exec_bfd = NULL; |
| 131 | } |
| 132 | |
| 133 | if (exec_ops.to_sections) |
| 134 | { |
| 135 | free ((PTR)exec_ops.to_sections); |
| 136 | exec_ops.to_sections = NULL; |
| 137 | exec_ops.to_sections_end = NULL; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | /* Process the first arg in ARGS as the new exec file. |
| 142 | |
| 143 | Note that we have to explicitly ignore additional args, since we can |
| 144 | be called from file_command(), which also calls symbol_file_command() |
| 145 | which can take multiple args. */ |
| 146 | |
| 147 | void |
| 148 | exec_file_command (args, from_tty) |
| 149 | char *args; |
| 150 | int from_tty; |
| 151 | { |
| 152 | char **argv; |
| 153 | char *filename; |
| 154 | |
| 155 | target_preopen (from_tty); |
| 156 | |
| 157 | /* Remove any previous exec file. */ |
| 158 | unpush_target (&exec_ops); |
| 159 | |
| 160 | /* Now open and digest the file the user requested, if any. */ |
| 161 | |
| 162 | if (args) |
| 163 | { |
| 164 | char *scratch_pathname; |
| 165 | int scratch_chan; |
| 166 | |
| 167 | /* Scan through the args and pick up the first non option arg |
| 168 | as the filename. */ |
| 169 | |
| 170 | argv = buildargv (args); |
| 171 | if (argv == NULL) |
| 172 | nomem (0); |
| 173 | |
| 174 | make_cleanup (freeargv, (char *) argv); |
| 175 | |
| 176 | for (; (*argv != NULL) && (**argv == '-'); argv++) {;} |
| 177 | if (*argv == NULL) |
| 178 | error ("no exec file name was specified"); |
| 179 | |
| 180 | filename = tilde_expand (*argv); |
| 181 | make_cleanup (free, filename); |
| 182 | |
| 183 | scratch_chan = openp (getenv ("PATH"), 1, filename, |
| 184 | write_files? O_RDWR|O_BINARY: O_RDONLY|O_BINARY, 0, |
| 185 | &scratch_pathname); |
| 186 | if (scratch_chan < 0) |
| 187 | perror_with_name (filename); |
| 188 | |
| 189 | exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); |
| 190 | if (!exec_bfd) |
| 191 | error ("\"%s\": could not open as an executable file: %s", |
| 192 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
| 193 | if (!bfd_check_format (exec_bfd, bfd_object)) |
| 194 | { |
| 195 | /* Make sure to close exec_bfd, or else "run" might try to use |
| 196 | it. */ |
| 197 | exec_close (0); |
| 198 | error ("\"%s\": not in executable format: %s", |
| 199 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
| 200 | } |
| 201 | |
| 202 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor |
| 203 | way to accomplish. */ |
| 204 | #ifdef IBM6000_TARGET |
| 205 | /* Setup initial vmap. */ |
| 206 | |
| 207 | map_vmap (exec_bfd, 0); |
| 208 | if (vmap == NULL) |
| 209 | { |
| 210 | /* Make sure to close exec_bfd, or else "run" might try to use |
| 211 | it. */ |
| 212 | exec_close (0); |
| 213 | error ("\"%s\": can't find the file sections: %s", |
| 214 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
| 215 | } |
| 216 | #endif /* IBM6000_TARGET */ |
| 217 | |
| 218 | if (build_section_table (exec_bfd, &exec_ops.to_sections, |
| 219 | &exec_ops.to_sections_end)) |
| 220 | { |
| 221 | /* Make sure to close exec_bfd, or else "run" might try to use |
| 222 | it. */ |
| 223 | exec_close (0); |
| 224 | error ("\"%s\": can't find the file sections: %s", |
| 225 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
| 226 | } |
| 227 | |
| 228 | #ifdef NEED_TEXT_START_END |
| 229 | |
| 230 | /* text_end is sometimes used for where to put call dummies. A |
| 231 | few ports use these for other purposes too. */ |
| 232 | |
| 233 | { |
| 234 | struct section_table *p; |
| 235 | |
| 236 | /* Set text_start to the lowest address of the start of any |
| 237 | readonly code section and set text_end to the highest |
| 238 | address of the end of any readonly code section. */ |
| 239 | /* FIXME: The comment above does not match the code. The code |
| 240 | checks for sections with are either code *or* readonly. */ |
| 241 | |
| 242 | text_start = ~(CORE_ADDR)0; |
| 243 | text_end = (CORE_ADDR)0; |
| 244 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
| 245 | if (bfd_get_section_flags (p->bfd, p->the_bfd_section) |
| 246 | & (SEC_CODE | SEC_READONLY)) |
| 247 | { |
| 248 | if (text_start > p->addr) |
| 249 | text_start = p->addr; |
| 250 | if (text_end < p->endaddr) |
| 251 | text_end = p->endaddr; |
| 252 | } |
| 253 | } |
| 254 | #endif |
| 255 | |
| 256 | validate_files (); |
| 257 | |
| 258 | set_endian_from_file (exec_bfd); |
| 259 | |
| 260 | push_target (&exec_ops); |
| 261 | |
| 262 | /* Tell display code (if any) about the changed file name. */ |
| 263 | if (exec_file_display_hook) |
| 264 | (*exec_file_display_hook) (filename); |
| 265 | } |
| 266 | else if (from_tty) |
| 267 | printf_unfiltered ("No exec file now.\n"); |
| 268 | } |
| 269 | |
| 270 | /* Set both the exec file and the symbol file, in one command. |
| 271 | What a novelty. Why did GDB go through four major releases before this |
| 272 | command was added? */ |
| 273 | |
| 274 | static void |
| 275 | file_command (arg, from_tty) |
| 276 | char *arg; |
| 277 | int from_tty; |
| 278 | { |
| 279 | /* FIXME, if we lose on reading the symbol file, we should revert |
| 280 | the exec file, but that's rough. */ |
| 281 | exec_file_command (arg, from_tty); |
| 282 | symbol_file_command (arg, from_tty); |
| 283 | } |
| 284 | |
| 285 | \f |
| 286 | /* Locate all mappable sections of a BFD file. |
| 287 | table_pp_char is a char * to get it through bfd_map_over_sections; |
| 288 | we cast it back to its proper type. */ |
| 289 | |
| 290 | static void |
| 291 | add_to_section_table (abfd, asect, table_pp_char) |
| 292 | bfd *abfd; |
| 293 | sec_ptr asect; |
| 294 | PTR table_pp_char; |
| 295 | { |
| 296 | struct section_table **table_pp = (struct section_table **)table_pp_char; |
| 297 | flagword aflag; |
| 298 | |
| 299 | aflag = bfd_get_section_flags (abfd, asect); |
| 300 | if (!(aflag & SEC_ALLOC)) |
| 301 | return; |
| 302 | if (0 == bfd_section_size (abfd, asect)) |
| 303 | return; |
| 304 | (*table_pp)->bfd = abfd; |
| 305 | (*table_pp)->the_bfd_section = asect; |
| 306 | (*table_pp)->addr = bfd_section_vma (abfd, asect); |
| 307 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); |
| 308 | (*table_pp)++; |
| 309 | } |
| 310 | |
| 311 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
| 312 | Returns 0 if OK, 1 on error. */ |
| 313 | |
| 314 | int |
| 315 | build_section_table (some_bfd, start, end) |
| 316 | bfd *some_bfd; |
| 317 | struct section_table **start, **end; |
| 318 | { |
| 319 | unsigned count; |
| 320 | |
| 321 | count = bfd_count_sections (some_bfd); |
| 322 | if (*start) |
| 323 | free ((PTR)*start); |
| 324 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
| 325 | *end = *start; |
| 326 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end); |
| 327 | if (*end > *start + count) |
| 328 | abort(); |
| 329 | /* We could realloc the table, but it probably loses for most files. */ |
| 330 | return 0; |
| 331 | } |
| 332 | \f |
| 333 | static void |
| 334 | bfdsec_to_vmap(abfd, sect, arg3) |
| 335 | bfd *abfd; |
| 336 | sec_ptr sect; |
| 337 | PTR arg3; |
| 338 | { |
| 339 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; |
| 340 | struct vmap *vp; |
| 341 | |
| 342 | vp = vmap_bfd->pvmap; |
| 343 | |
| 344 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) |
| 345 | return; |
| 346 | |
| 347 | if (STREQ (bfd_section_name (abfd, sect), ".text")) |
| 348 | { |
| 349 | vp->tstart = 0; |
| 350 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); |
| 351 | |
| 352 | /* When it comes to this adjustment value, in contrast to our previous |
| 353 | belief shared objects should behave the same as the main load segment. |
| 354 | This is the offset from the beginning of text section to the first |
| 355 | real instruction. */ |
| 356 | |
| 357 | vp->tadj = sect->filepos - bfd_section_vma (abfd, sect); |
| 358 | } |
| 359 | else if (STREQ (bfd_section_name (abfd, sect), ".data")) |
| 360 | { |
| 361 | vp->dstart = 0; |
| 362 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); |
| 363 | } |
| 364 | /* Silently ignore other types of sections. (FIXME?) */ |
| 365 | } |
| 366 | |
| 367 | /* Make a vmap for ABFD which might be a member of the archive ARCH. |
| 368 | Return the new vmap. */ |
| 369 | |
| 370 | struct vmap * |
| 371 | map_vmap (abfd, arch) |
| 372 | bfd *abfd; |
| 373 | bfd *arch; |
| 374 | { |
| 375 | struct vmap_and_bfd vmap_bfd; |
| 376 | struct vmap *vp, **vpp; |
| 377 | |
| 378 | vp = (struct vmap *) xmalloc (sizeof (*vp)); |
| 379 | memset ((char *) vp, '\0', sizeof (*vp)); |
| 380 | vp->nxt = 0; |
| 381 | vp->bfd = abfd; |
| 382 | vp->name = bfd_get_filename (arch ? arch : abfd); |
| 383 | vp->member = arch ? bfd_get_filename (abfd) : ""; |
| 384 | |
| 385 | vmap_bfd.pbfd = arch; |
| 386 | vmap_bfd.pvmap = vp; |
| 387 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); |
| 388 | |
| 389 | /* Find the end of the list and append. */ |
| 390 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) |
| 391 | ; |
| 392 | *vpp = vp; |
| 393 | |
| 394 | return vp; |
| 395 | } |
| 396 | \f |
| 397 | /* Read or write the exec file. |
| 398 | |
| 399 | Args are address within a BFD file, address within gdb address-space, |
| 400 | length, and a flag indicating whether to read or write. |
| 401 | |
| 402 | Result is a length: |
| 403 | |
| 404 | 0: We cannot handle this address and length. |
| 405 | > 0: We have handled N bytes starting at this address. |
| 406 | (If N == length, we did it all.) We might be able |
| 407 | to handle more bytes beyond this length, but no |
| 408 | promises. |
| 409 | < 0: We cannot handle this address, but if somebody |
| 410 | else handles (-N) bytes, we can start from there. |
| 411 | |
| 412 | The same routine is used to handle both core and exec files; |
| 413 | we just tail-call it with more arguments to select between them. */ |
| 414 | |
| 415 | int |
| 416 | xfer_memory (memaddr, myaddr, len, write, target) |
| 417 | CORE_ADDR memaddr; |
| 418 | char *myaddr; |
| 419 | int len; |
| 420 | int write; |
| 421 | struct target_ops *target; |
| 422 | { |
| 423 | boolean res; |
| 424 | struct section_table *p; |
| 425 | CORE_ADDR nextsectaddr, memend; |
| 426 | boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); |
| 427 | |
| 428 | if (len <= 0) |
| 429 | abort(); |
| 430 | |
| 431 | memend = memaddr + len; |
| 432 | xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents; |
| 433 | nextsectaddr = memend; |
| 434 | |
| 435 | for (p = target->to_sections; p < target->to_sections_end; p++) |
| 436 | { |
| 437 | if (p->addr <= memaddr) |
| 438 | if (p->endaddr >= memend) |
| 439 | { |
| 440 | /* Entire transfer is within this section. */ |
| 441 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, |
| 442 | memaddr - p->addr, len); |
| 443 | return (res != 0) ? len : 0; |
| 444 | } |
| 445 | else if (p->endaddr <= memaddr) |
| 446 | { |
| 447 | /* This section ends before the transfer starts. */ |
| 448 | continue; |
| 449 | } |
| 450 | else |
| 451 | { |
| 452 | /* This section overlaps the transfer. Just do half. */ |
| 453 | len = p->endaddr - memaddr; |
| 454 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, |
| 455 | memaddr - p->addr, len); |
| 456 | return (res != 0) ? len : 0; |
| 457 | } |
| 458 | else if (p->addr < nextsectaddr) |
| 459 | nextsectaddr = p->addr; |
| 460 | } |
| 461 | |
| 462 | if (nextsectaddr >= memend) |
| 463 | return 0; /* We can't help */ |
| 464 | else |
| 465 | return - (nextsectaddr - memaddr); /* Next boundary where we can help */ |
| 466 | } |
| 467 | |
| 468 | #ifdef FIXME |
| 469 | #ifdef REG_STACK_SEGMENT |
| 470 | /* MOVE TO BFD... */ |
| 471 | /* Pyramids and AM29000s have an extra segment in the virtual address space |
| 472 | for the (control) stack of register-window frames. The AM29000 folk |
| 473 | call it the "register stack" rather than the "memory stack". */ |
| 474 | else if (memaddr >= reg_stack_start && memaddr < reg_stack_end) |
| 475 | { |
| 476 | i = min (len, reg_stack_end - memaddr); |
| 477 | fileptr = memaddr - reg_stack_start + reg_stack_offset; |
| 478 | wanna_xfer = coredata; |
| 479 | } |
| 480 | #endif /* REG_STACK_SEGMENT */ |
| 481 | #endif /* FIXME */ |
| 482 | \f |
| 483 | void |
| 484 | print_section_info (t, abfd) |
| 485 | struct target_ops *t; |
| 486 | bfd *abfd; |
| 487 | { |
| 488 | struct section_table *p; |
| 489 | |
| 490 | printf_filtered ("\t`%s', ", bfd_get_filename(abfd)); |
| 491 | wrap_here (" "); |
| 492 | printf_filtered ("file type %s.\n", bfd_get_target(abfd)); |
| 493 | if (abfd == exec_bfd) |
| 494 | { |
| 495 | printf_filtered ("\tEntry point: "); |
| 496 | print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); |
| 497 | printf_filtered ("\n"); |
| 498 | } |
| 499 | for (p = t->to_sections; p < t->to_sections_end; p++) |
| 500 | { |
| 501 | /* FIXME-32x64 need a print_address_numeric with field width */ |
| 502 | printf_filtered ("\t%s", local_hex_string_custom ((unsigned long) p->addr, "08l")); |
| 503 | printf_filtered (" - %s", local_hex_string_custom ((unsigned long) p->endaddr, "08l")); |
| 504 | if (info_verbose) |
| 505 | printf_filtered (" @ %s", |
| 506 | local_hex_string_custom ((unsigned long) p->the_bfd_section->filepos, "08l")); |
| 507 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
| 508 | if (p->bfd != abfd) |
| 509 | { |
| 510 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
| 511 | } |
| 512 | printf_filtered ("\n"); |
| 513 | } |
| 514 | } |
| 515 | |
| 516 | static void |
| 517 | exec_files_info (t) |
| 518 | struct target_ops *t; |
| 519 | { |
| 520 | print_section_info (t, exec_bfd); |
| 521 | |
| 522 | if (vmap) |
| 523 | { |
| 524 | struct vmap *vp; |
| 525 | |
| 526 | printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name); |
| 527 | printf_unfiltered ("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n", |
| 528 | "tstart", "tend", "dstart", "dend", "section", |
| 529 | "file(member)"); |
| 530 | |
| 531 | for (vp = vmap; vp; vp = vp->nxt) |
| 532 | printf_unfiltered ("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n", |
| 533 | vp->tstart, vp->tend, vp->dstart, vp->dend, vp->name, |
| 534 | *vp->member ? "(" : "", vp->member, |
| 535 | *vp->member ? ")" : ""); |
| 536 | } |
| 537 | } |
| 538 | |
| 539 | static void |
| 540 | set_section_command (args, from_tty) |
| 541 | char *args; |
| 542 | int from_tty; |
| 543 | { |
| 544 | struct section_table *p; |
| 545 | char *secname; |
| 546 | unsigned seclen; |
| 547 | unsigned long secaddr; |
| 548 | char secprint[100]; |
| 549 | long offset; |
| 550 | |
| 551 | if (args == 0) |
| 552 | error ("Must specify section name and its virtual address"); |
| 553 | |
| 554 | /* Parse out section name */ |
| 555 | for (secname = args; !isspace(*args); args++) ; |
| 556 | seclen = args - secname; |
| 557 | |
| 558 | /* Parse out new virtual address */ |
| 559 | secaddr = parse_and_eval_address (args); |
| 560 | |
| 561 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) { |
| 562 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) |
| 563 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') { |
| 564 | offset = secaddr - p->addr; |
| 565 | p->addr += offset; |
| 566 | p->endaddr += offset; |
| 567 | if (from_tty) |
| 568 | exec_files_info(&exec_ops); |
| 569 | return; |
| 570 | } |
| 571 | } |
| 572 | if (seclen >= sizeof (secprint)) |
| 573 | seclen = sizeof (secprint) - 1; |
| 574 | strncpy (secprint, secname, seclen); |
| 575 | secprint[seclen] = '\0'; |
| 576 | error ("Section %s not found", secprint); |
| 577 | } |
| 578 | |
| 579 | /* If mourn is being called in all the right places, this could be say |
| 580 | `gdb internal error' (since generic_mourn calls breakpoint_init_inferior). */ |
| 581 | |
| 582 | static int |
| 583 | ignore (addr, contents) |
| 584 | CORE_ADDR addr; |
| 585 | char *contents; |
| 586 | { |
| 587 | return 0; |
| 588 | } |
| 589 | |
| 590 | struct target_ops exec_ops = { |
| 591 | "exec", "Local exec file", |
| 592 | "Use an executable file as a target.\n\ |
| 593 | Specify the filename of the executable file.", |
| 594 | exec_file_command, exec_close, /* open, close */ |
| 595 | find_default_attach, 0, 0, 0, /* attach, detach, resume, wait, */ |
| 596 | 0, 0, /* fetch_registers, store_registers, */ |
| 597 | 0, /* prepare_to_store, */ |
| 598 | xfer_memory, exec_files_info, |
| 599 | ignore, ignore, /* insert_breakpoint, remove_breakpoint, */ |
| 600 | 0, 0, 0, 0, 0, /* terminal stuff */ |
| 601 | 0, 0, /* kill, load */ |
| 602 | 0, /* lookup sym */ |
| 603 | find_default_create_inferior, |
| 604 | 0, /* mourn_inferior */ |
| 605 | 0, /* can_run */ |
| 606 | 0, /* notice_signals */ |
| 607 | file_stratum, 0, /* next */ |
| 608 | 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */ |
| 609 | 0, 0, /* section pointers */ |
| 610 | OPS_MAGIC, /* Always the last thing */ |
| 611 | }; |
| 612 | |
| 613 | void |
| 614 | _initialize_exec() |
| 615 | { |
| 616 | struct cmd_list_element *c; |
| 617 | |
| 618 | c = add_cmd ("file", class_files, file_command, |
| 619 | "Use FILE as program to be debugged.\n\ |
| 620 | It is read for its symbols, for getting the contents of pure memory,\n\ |
| 621 | and it is the program executed when you use the `run' command.\n\ |
| 622 | If FILE cannot be found as specified, your execution directory path\n\ |
| 623 | ($PATH) is searched for a command of that name.\n\ |
| 624 | No arg means to have no executable file and no symbols.", &cmdlist); |
| 625 | c->completer = filename_completer; |
| 626 | |
| 627 | c = add_cmd ("exec-file", class_files, exec_file_command, |
| 628 | "Use FILE as program for getting contents of pure memory.\n\ |
| 629 | If FILE cannot be found as specified, your execution directory path\n\ |
| 630 | is searched for a command of that name.\n\ |
| 631 | No arg means have no executable file.", &cmdlist); |
| 632 | c->completer = filename_completer; |
| 633 | |
| 634 | add_com ("section", class_files, set_section_command, |
| 635 | "Change the base address of section SECTION of the exec file to ADDR.\n\ |
| 636 | This can be used if the exec file does not contain section addresses,\n\ |
| 637 | (such as in the a.out format), or when the addresses specified in the\n\ |
| 638 | file itself are wrong. Each section must be changed separately. The\n\ |
| 639 | ``info files'' command lists all the sections and their addresses."); |
| 640 | |
| 641 | add_show_from_set |
| 642 | (add_set_cmd ("write", class_support, var_boolean, (char *)&write_files, |
| 643 | "Set writing into executable and core files.", |
| 644 | &setlist), |
| 645 | &showlist); |
| 646 | |
| 647 | add_target (&exec_ops); |
| 648 | } |