| 1 | /* Select target systems and architectures at runtime for GDB. |
| 2 | |
| 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 5 | Free Software Foundation, Inc. |
| 6 | |
| 7 | Contributed by Cygnus Support. |
| 8 | |
| 9 | This file is part of GDB. |
| 10 | |
| 11 | This program is free software; you can redistribute it and/or modify |
| 12 | it under the terms of the GNU General Public License as published by |
| 13 | the Free Software Foundation; either version 3 of the License, or |
| 14 | (at your option) any later version. |
| 15 | |
| 16 | This program is distributed in the hope that it will be useful, |
| 17 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | GNU General Public License for more details. |
| 20 | |
| 21 | You should have received a copy of the GNU General Public License |
| 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 23 | |
| 24 | #include "defs.h" |
| 25 | #include <errno.h> |
| 26 | #include "gdb_string.h" |
| 27 | #include "target.h" |
| 28 | #include "gdbcmd.h" |
| 29 | #include "symtab.h" |
| 30 | #include "inferior.h" |
| 31 | #include "bfd.h" |
| 32 | #include "symfile.h" |
| 33 | #include "objfiles.h" |
| 34 | #include "gdb_wait.h" |
| 35 | #include "dcache.h" |
| 36 | #include <signal.h> |
| 37 | #include "regcache.h" |
| 38 | #include "gdb_assert.h" |
| 39 | #include "gdbcore.h" |
| 40 | #include "exceptions.h" |
| 41 | #include "target-descriptions.h" |
| 42 | #include "gdbthread.h" |
| 43 | #include "solib.h" |
| 44 | #include "exec.h" |
| 45 | #include "inline-frame.h" |
| 46 | |
| 47 | static void target_info (char *, int); |
| 48 | |
| 49 | static void default_terminal_info (char *, int); |
| 50 | |
| 51 | static int default_watchpoint_addr_within_range (struct target_ops *, |
| 52 | CORE_ADDR, CORE_ADDR, int); |
| 53 | |
| 54 | static int default_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
| 55 | |
| 56 | static int nosymbol (char *, CORE_ADDR *); |
| 57 | |
| 58 | static void tcomplain (void) ATTR_NORETURN; |
| 59 | |
| 60 | static int nomemory (CORE_ADDR, char *, int, int, struct target_ops *); |
| 61 | |
| 62 | static int return_zero (void); |
| 63 | |
| 64 | static int return_one (void); |
| 65 | |
| 66 | static int return_minus_one (void); |
| 67 | |
| 68 | void target_ignore (void); |
| 69 | |
| 70 | static void target_command (char *, int); |
| 71 | |
| 72 | static struct target_ops *find_default_run_target (char *); |
| 73 | |
| 74 | static LONGEST default_xfer_partial (struct target_ops *ops, |
| 75 | enum target_object object, |
| 76 | const char *annex, gdb_byte *readbuf, |
| 77 | const gdb_byte *writebuf, |
| 78 | ULONGEST offset, LONGEST len); |
| 79 | |
| 80 | static LONGEST current_xfer_partial (struct target_ops *ops, |
| 81 | enum target_object object, |
| 82 | const char *annex, gdb_byte *readbuf, |
| 83 | const gdb_byte *writebuf, |
| 84 | ULONGEST offset, LONGEST len); |
| 85 | |
| 86 | static LONGEST target_xfer_partial (struct target_ops *ops, |
| 87 | enum target_object object, |
| 88 | const char *annex, |
| 89 | void *readbuf, const void *writebuf, |
| 90 | ULONGEST offset, LONGEST len); |
| 91 | |
| 92 | static struct gdbarch *default_thread_architecture (struct target_ops *ops, |
| 93 | ptid_t ptid); |
| 94 | |
| 95 | static void init_dummy_target (void); |
| 96 | |
| 97 | static struct target_ops debug_target; |
| 98 | |
| 99 | static void debug_to_open (char *, int); |
| 100 | |
| 101 | static void debug_to_prepare_to_store (struct regcache *); |
| 102 | |
| 103 | static void debug_to_files_info (struct target_ops *); |
| 104 | |
| 105 | static int debug_to_insert_breakpoint (struct gdbarch *, |
| 106 | struct bp_target_info *); |
| 107 | |
| 108 | static int debug_to_remove_breakpoint (struct gdbarch *, |
| 109 | struct bp_target_info *); |
| 110 | |
| 111 | static int debug_to_can_use_hw_breakpoint (int, int, int); |
| 112 | |
| 113 | static int debug_to_insert_hw_breakpoint (struct gdbarch *, |
| 114 | struct bp_target_info *); |
| 115 | |
| 116 | static int debug_to_remove_hw_breakpoint (struct gdbarch *, |
| 117 | struct bp_target_info *); |
| 118 | |
| 119 | static int debug_to_insert_watchpoint (CORE_ADDR, int, int); |
| 120 | |
| 121 | static int debug_to_remove_watchpoint (CORE_ADDR, int, int); |
| 122 | |
| 123 | static int debug_to_stopped_by_watchpoint (void); |
| 124 | |
| 125 | static int debug_to_stopped_data_address (struct target_ops *, CORE_ADDR *); |
| 126 | |
| 127 | static int debug_to_watchpoint_addr_within_range (struct target_ops *, |
| 128 | CORE_ADDR, CORE_ADDR, int); |
| 129 | |
| 130 | static int debug_to_region_ok_for_hw_watchpoint (CORE_ADDR, int); |
| 131 | |
| 132 | static void debug_to_terminal_init (void); |
| 133 | |
| 134 | static void debug_to_terminal_inferior (void); |
| 135 | |
| 136 | static void debug_to_terminal_ours_for_output (void); |
| 137 | |
| 138 | static void debug_to_terminal_save_ours (void); |
| 139 | |
| 140 | static void debug_to_terminal_ours (void); |
| 141 | |
| 142 | static void debug_to_terminal_info (char *, int); |
| 143 | |
| 144 | static void debug_to_load (char *, int); |
| 145 | |
| 146 | static int debug_to_lookup_symbol (char *, CORE_ADDR *); |
| 147 | |
| 148 | static int debug_to_can_run (void); |
| 149 | |
| 150 | static void debug_to_notice_signals (ptid_t); |
| 151 | |
| 152 | static void debug_to_stop (ptid_t); |
| 153 | |
| 154 | /* NOTE: cagney/2004-09-29: Many targets reference this variable in |
| 155 | wierd and mysterious ways. Putting the variable here lets those |
| 156 | wierd and mysterious ways keep building while they are being |
| 157 | converted to the inferior inheritance structure. */ |
| 158 | struct target_ops deprecated_child_ops; |
| 159 | |
| 160 | /* Pointer to array of target architecture structures; the size of the |
| 161 | array; the current index into the array; the allocated size of the |
| 162 | array. */ |
| 163 | struct target_ops **target_structs; |
| 164 | unsigned target_struct_size; |
| 165 | unsigned target_struct_index; |
| 166 | unsigned target_struct_allocsize; |
| 167 | #define DEFAULT_ALLOCSIZE 10 |
| 168 | |
| 169 | /* The initial current target, so that there is always a semi-valid |
| 170 | current target. */ |
| 171 | |
| 172 | static struct target_ops dummy_target; |
| 173 | |
| 174 | /* Top of target stack. */ |
| 175 | |
| 176 | static struct target_ops *target_stack; |
| 177 | |
| 178 | /* The target structure we are currently using to talk to a process |
| 179 | or file or whatever "inferior" we have. */ |
| 180 | |
| 181 | struct target_ops current_target; |
| 182 | |
| 183 | /* Command list for target. */ |
| 184 | |
| 185 | static struct cmd_list_element *targetlist = NULL; |
| 186 | |
| 187 | /* Nonzero if we should trust readonly sections from the |
| 188 | executable when reading memory. */ |
| 189 | |
| 190 | static int trust_readonly = 0; |
| 191 | |
| 192 | /* Nonzero if we should show true memory content including |
| 193 | memory breakpoint inserted by gdb. */ |
| 194 | |
| 195 | static int show_memory_breakpoints = 0; |
| 196 | |
| 197 | /* Non-zero if we want to see trace of target level stuff. */ |
| 198 | |
| 199 | static int targetdebug = 0; |
| 200 | static void |
| 201 | show_targetdebug (struct ui_file *file, int from_tty, |
| 202 | struct cmd_list_element *c, const char *value) |
| 203 | { |
| 204 | fprintf_filtered (file, _("Target debugging is %s.\n"), value); |
| 205 | } |
| 206 | |
| 207 | static void setup_target_debug (void); |
| 208 | |
| 209 | /* The option sets this. */ |
| 210 | static int stack_cache_enabled_p_1 = 1; |
| 211 | /* And set_stack_cache_enabled_p updates this. |
| 212 | The reason for the separation is so that we don't flush the cache for |
| 213 | on->on transitions. */ |
| 214 | static int stack_cache_enabled_p = 1; |
| 215 | |
| 216 | /* This is called *after* the stack-cache has been set. |
| 217 | Flush the cache for off->on and on->off transitions. |
| 218 | There's no real need to flush the cache for on->off transitions, |
| 219 | except cleanliness. */ |
| 220 | |
| 221 | static void |
| 222 | set_stack_cache_enabled_p (char *args, int from_tty, |
| 223 | struct cmd_list_element *c) |
| 224 | { |
| 225 | if (stack_cache_enabled_p != stack_cache_enabled_p_1) |
| 226 | target_dcache_invalidate (); |
| 227 | |
| 228 | stack_cache_enabled_p = stack_cache_enabled_p_1; |
| 229 | } |
| 230 | |
| 231 | static void |
| 232 | show_stack_cache_enabled_p (struct ui_file *file, int from_tty, |
| 233 | struct cmd_list_element *c, const char *value) |
| 234 | { |
| 235 | fprintf_filtered (file, _("Cache use for stack accesses is %s.\n"), value); |
| 236 | } |
| 237 | |
| 238 | /* Cache of memory operations, to speed up remote access. */ |
| 239 | static DCACHE *target_dcache; |
| 240 | |
| 241 | /* Invalidate the target dcache. */ |
| 242 | |
| 243 | void |
| 244 | target_dcache_invalidate (void) |
| 245 | { |
| 246 | dcache_invalidate (target_dcache); |
| 247 | } |
| 248 | |
| 249 | /* The user just typed 'target' without the name of a target. */ |
| 250 | |
| 251 | static void |
| 252 | target_command (char *arg, int from_tty) |
| 253 | { |
| 254 | fputs_filtered ("Argument required (target name). Try `help target'\n", |
| 255 | gdb_stdout); |
| 256 | } |
| 257 | |
| 258 | /* Default target_has_* methods for process_stratum targets. */ |
| 259 | |
| 260 | int |
| 261 | default_child_has_all_memory (struct target_ops *ops) |
| 262 | { |
| 263 | /* If no inferior selected, then we can't read memory here. */ |
| 264 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 265 | return 0; |
| 266 | |
| 267 | return 1; |
| 268 | } |
| 269 | |
| 270 | int |
| 271 | default_child_has_memory (struct target_ops *ops) |
| 272 | { |
| 273 | /* If no inferior selected, then we can't read memory here. */ |
| 274 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 275 | return 0; |
| 276 | |
| 277 | return 1; |
| 278 | } |
| 279 | |
| 280 | int |
| 281 | default_child_has_stack (struct target_ops *ops) |
| 282 | { |
| 283 | /* If no inferior selected, there's no stack. */ |
| 284 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 285 | return 0; |
| 286 | |
| 287 | return 1; |
| 288 | } |
| 289 | |
| 290 | int |
| 291 | default_child_has_registers (struct target_ops *ops) |
| 292 | { |
| 293 | /* Can't read registers from no inferior. */ |
| 294 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 295 | return 0; |
| 296 | |
| 297 | return 1; |
| 298 | } |
| 299 | |
| 300 | int |
| 301 | default_child_has_execution (struct target_ops *ops) |
| 302 | { |
| 303 | /* If there's no thread selected, then we can't make it run through |
| 304 | hoops. */ |
| 305 | if (ptid_equal (inferior_ptid, null_ptid)) |
| 306 | return 0; |
| 307 | |
| 308 | return 1; |
| 309 | } |
| 310 | |
| 311 | |
| 312 | int |
| 313 | target_has_all_memory_1 (void) |
| 314 | { |
| 315 | struct target_ops *t; |
| 316 | |
| 317 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 318 | if (t->to_has_all_memory (t)) |
| 319 | return 1; |
| 320 | |
| 321 | return 0; |
| 322 | } |
| 323 | |
| 324 | int |
| 325 | target_has_memory_1 (void) |
| 326 | { |
| 327 | struct target_ops *t; |
| 328 | |
| 329 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 330 | if (t->to_has_memory (t)) |
| 331 | return 1; |
| 332 | |
| 333 | return 0; |
| 334 | } |
| 335 | |
| 336 | int |
| 337 | target_has_stack_1 (void) |
| 338 | { |
| 339 | struct target_ops *t; |
| 340 | |
| 341 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 342 | if (t->to_has_stack (t)) |
| 343 | return 1; |
| 344 | |
| 345 | return 0; |
| 346 | } |
| 347 | |
| 348 | int |
| 349 | target_has_registers_1 (void) |
| 350 | { |
| 351 | struct target_ops *t; |
| 352 | |
| 353 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 354 | if (t->to_has_registers (t)) |
| 355 | return 1; |
| 356 | |
| 357 | return 0; |
| 358 | } |
| 359 | |
| 360 | int |
| 361 | target_has_execution_1 (void) |
| 362 | { |
| 363 | struct target_ops *t; |
| 364 | |
| 365 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 366 | if (t->to_has_execution (t)) |
| 367 | return 1; |
| 368 | |
| 369 | return 0; |
| 370 | } |
| 371 | |
| 372 | /* Add a possible target architecture to the list. */ |
| 373 | |
| 374 | void |
| 375 | add_target (struct target_ops *t) |
| 376 | { |
| 377 | /* Provide default values for all "must have" methods. */ |
| 378 | if (t->to_xfer_partial == NULL) |
| 379 | t->to_xfer_partial = default_xfer_partial; |
| 380 | |
| 381 | if (t->to_has_all_memory == NULL) |
| 382 | t->to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
| 383 | |
| 384 | if (t->to_has_memory == NULL) |
| 385 | t->to_has_memory = (int (*) (struct target_ops *)) return_zero; |
| 386 | |
| 387 | if (t->to_has_stack == NULL) |
| 388 | t->to_has_stack = (int (*) (struct target_ops *)) return_zero; |
| 389 | |
| 390 | if (t->to_has_registers == NULL) |
| 391 | t->to_has_registers = (int (*) (struct target_ops *)) return_zero; |
| 392 | |
| 393 | if (t->to_has_execution == NULL) |
| 394 | t->to_has_execution = (int (*) (struct target_ops *)) return_zero; |
| 395 | |
| 396 | if (!target_structs) |
| 397 | { |
| 398 | target_struct_allocsize = DEFAULT_ALLOCSIZE; |
| 399 | target_structs = (struct target_ops **) xmalloc |
| 400 | (target_struct_allocsize * sizeof (*target_structs)); |
| 401 | } |
| 402 | if (target_struct_size >= target_struct_allocsize) |
| 403 | { |
| 404 | target_struct_allocsize *= 2; |
| 405 | target_structs = (struct target_ops **) |
| 406 | xrealloc ((char *) target_structs, |
| 407 | target_struct_allocsize * sizeof (*target_structs)); |
| 408 | } |
| 409 | target_structs[target_struct_size++] = t; |
| 410 | |
| 411 | if (targetlist == NULL) |
| 412 | add_prefix_cmd ("target", class_run, target_command, _("\ |
| 413 | Connect to a target machine or process.\n\ |
| 414 | The first argument is the type or protocol of the target machine.\n\ |
| 415 | Remaining arguments are interpreted by the target protocol. For more\n\ |
| 416 | information on the arguments for a particular protocol, type\n\ |
| 417 | `help target ' followed by the protocol name."), |
| 418 | &targetlist, "target ", 0, &cmdlist); |
| 419 | add_cmd (t->to_shortname, no_class, t->to_open, t->to_doc, &targetlist); |
| 420 | } |
| 421 | |
| 422 | /* Stub functions */ |
| 423 | |
| 424 | void |
| 425 | target_ignore (void) |
| 426 | { |
| 427 | } |
| 428 | |
| 429 | void |
| 430 | target_kill (void) |
| 431 | { |
| 432 | struct target_ops *t; |
| 433 | |
| 434 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 435 | if (t->to_kill != NULL) |
| 436 | { |
| 437 | if (targetdebug) |
| 438 | fprintf_unfiltered (gdb_stdlog, "target_kill ()\n"); |
| 439 | |
| 440 | t->to_kill (t); |
| 441 | return; |
| 442 | } |
| 443 | |
| 444 | noprocess (); |
| 445 | } |
| 446 | |
| 447 | void |
| 448 | target_load (char *arg, int from_tty) |
| 449 | { |
| 450 | target_dcache_invalidate (); |
| 451 | (*current_target.to_load) (arg, from_tty); |
| 452 | } |
| 453 | |
| 454 | void |
| 455 | target_create_inferior (char *exec_file, char *args, |
| 456 | char **env, int from_tty) |
| 457 | { |
| 458 | struct target_ops *t; |
| 459 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 460 | { |
| 461 | if (t->to_create_inferior != NULL) |
| 462 | { |
| 463 | t->to_create_inferior (t, exec_file, args, env, from_tty); |
| 464 | if (targetdebug) |
| 465 | fprintf_unfiltered (gdb_stdlog, |
| 466 | "target_create_inferior (%s, %s, xxx, %d)\n", |
| 467 | exec_file, args, from_tty); |
| 468 | return; |
| 469 | } |
| 470 | } |
| 471 | |
| 472 | internal_error (__FILE__, __LINE__, |
| 473 | "could not find a target to create inferior"); |
| 474 | } |
| 475 | |
| 476 | void |
| 477 | target_terminal_inferior (void) |
| 478 | { |
| 479 | /* A background resume (``run&'') should leave GDB in control of the |
| 480 | terminal. Use target_can_async_p, not target_is_async_p, since at |
| 481 | this point the target is not async yet. However, if sync_execution |
| 482 | is not set, we know it will become async prior to resume. */ |
| 483 | if (target_can_async_p () && !sync_execution) |
| 484 | return; |
| 485 | |
| 486 | /* If GDB is resuming the inferior in the foreground, install |
| 487 | inferior's terminal modes. */ |
| 488 | (*current_target.to_terminal_inferior) (); |
| 489 | } |
| 490 | |
| 491 | static int |
| 492 | nomemory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
| 493 | struct target_ops *t) |
| 494 | { |
| 495 | errno = EIO; /* Can't read/write this location */ |
| 496 | return 0; /* No bytes handled */ |
| 497 | } |
| 498 | |
| 499 | static void |
| 500 | tcomplain (void) |
| 501 | { |
| 502 | error (_("You can't do that when your target is `%s'"), |
| 503 | current_target.to_shortname); |
| 504 | } |
| 505 | |
| 506 | void |
| 507 | noprocess (void) |
| 508 | { |
| 509 | error (_("You can't do that without a process to debug.")); |
| 510 | } |
| 511 | |
| 512 | static int |
| 513 | nosymbol (char *name, CORE_ADDR *addrp) |
| 514 | { |
| 515 | return 1; /* Symbol does not exist in target env */ |
| 516 | } |
| 517 | |
| 518 | static void |
| 519 | default_terminal_info (char *args, int from_tty) |
| 520 | { |
| 521 | printf_unfiltered (_("No saved terminal information.\n")); |
| 522 | } |
| 523 | |
| 524 | /* A default implementation for the to_get_ada_task_ptid target method. |
| 525 | |
| 526 | This function builds the PTID by using both LWP and TID as part of |
| 527 | the PTID lwp and tid elements. The pid used is the pid of the |
| 528 | inferior_ptid. */ |
| 529 | |
| 530 | static ptid_t |
| 531 | default_get_ada_task_ptid (long lwp, long tid) |
| 532 | { |
| 533 | return ptid_build (ptid_get_pid (inferior_ptid), lwp, tid); |
| 534 | } |
| 535 | |
| 536 | /* Go through the target stack from top to bottom, copying over zero |
| 537 | entries in current_target, then filling in still empty entries. In |
| 538 | effect, we are doing class inheritance through the pushed target |
| 539 | vectors. |
| 540 | |
| 541 | NOTE: cagney/2003-10-17: The problem with this inheritance, as it |
| 542 | is currently implemented, is that it discards any knowledge of |
| 543 | which target an inherited method originally belonged to. |
| 544 | Consequently, new new target methods should instead explicitly and |
| 545 | locally search the target stack for the target that can handle the |
| 546 | request. */ |
| 547 | |
| 548 | static void |
| 549 | update_current_target (void) |
| 550 | { |
| 551 | struct target_ops *t; |
| 552 | |
| 553 | /* First, reset current's contents. */ |
| 554 | memset (¤t_target, 0, sizeof (current_target)); |
| 555 | |
| 556 | #define INHERIT(FIELD, TARGET) \ |
| 557 | if (!current_target.FIELD) \ |
| 558 | current_target.FIELD = (TARGET)->FIELD |
| 559 | |
| 560 | for (t = target_stack; t; t = t->beneath) |
| 561 | { |
| 562 | INHERIT (to_shortname, t); |
| 563 | INHERIT (to_longname, t); |
| 564 | INHERIT (to_doc, t); |
| 565 | /* Do not inherit to_open. */ |
| 566 | /* Do not inherit to_close. */ |
| 567 | /* Do not inherit to_attach. */ |
| 568 | INHERIT (to_post_attach, t); |
| 569 | INHERIT (to_attach_no_wait, t); |
| 570 | /* Do not inherit to_detach. */ |
| 571 | /* Do not inherit to_disconnect. */ |
| 572 | /* Do not inherit to_resume. */ |
| 573 | /* Do not inherit to_wait. */ |
| 574 | /* Do not inherit to_fetch_registers. */ |
| 575 | /* Do not inherit to_store_registers. */ |
| 576 | INHERIT (to_prepare_to_store, t); |
| 577 | INHERIT (deprecated_xfer_memory, t); |
| 578 | INHERIT (to_files_info, t); |
| 579 | INHERIT (to_insert_breakpoint, t); |
| 580 | INHERIT (to_remove_breakpoint, t); |
| 581 | INHERIT (to_can_use_hw_breakpoint, t); |
| 582 | INHERIT (to_insert_hw_breakpoint, t); |
| 583 | INHERIT (to_remove_hw_breakpoint, t); |
| 584 | INHERIT (to_insert_watchpoint, t); |
| 585 | INHERIT (to_remove_watchpoint, t); |
| 586 | INHERIT (to_stopped_data_address, t); |
| 587 | INHERIT (to_have_steppable_watchpoint, t); |
| 588 | INHERIT (to_have_continuable_watchpoint, t); |
| 589 | INHERIT (to_stopped_by_watchpoint, t); |
| 590 | INHERIT (to_watchpoint_addr_within_range, t); |
| 591 | INHERIT (to_region_ok_for_hw_watchpoint, t); |
| 592 | INHERIT (to_terminal_init, t); |
| 593 | INHERIT (to_terminal_inferior, t); |
| 594 | INHERIT (to_terminal_ours_for_output, t); |
| 595 | INHERIT (to_terminal_ours, t); |
| 596 | INHERIT (to_terminal_save_ours, t); |
| 597 | INHERIT (to_terminal_info, t); |
| 598 | /* Do not inherit to_kill. */ |
| 599 | INHERIT (to_load, t); |
| 600 | INHERIT (to_lookup_symbol, t); |
| 601 | /* Do no inherit to_create_inferior. */ |
| 602 | INHERIT (to_post_startup_inferior, t); |
| 603 | INHERIT (to_acknowledge_created_inferior, t); |
| 604 | INHERIT (to_insert_fork_catchpoint, t); |
| 605 | INHERIT (to_remove_fork_catchpoint, t); |
| 606 | INHERIT (to_insert_vfork_catchpoint, t); |
| 607 | INHERIT (to_remove_vfork_catchpoint, t); |
| 608 | /* Do not inherit to_follow_fork. */ |
| 609 | INHERIT (to_insert_exec_catchpoint, t); |
| 610 | INHERIT (to_remove_exec_catchpoint, t); |
| 611 | INHERIT (to_set_syscall_catchpoint, t); |
| 612 | INHERIT (to_has_exited, t); |
| 613 | /* Do not inherit to_mourn_inferiour. */ |
| 614 | INHERIT (to_can_run, t); |
| 615 | INHERIT (to_notice_signals, t); |
| 616 | /* Do not inherit to_thread_alive. */ |
| 617 | /* Do not inherit to_find_new_threads. */ |
| 618 | /* Do not inherit to_pid_to_str. */ |
| 619 | INHERIT (to_extra_thread_info, t); |
| 620 | INHERIT (to_stop, t); |
| 621 | /* Do not inherit to_xfer_partial. */ |
| 622 | INHERIT (to_rcmd, t); |
| 623 | INHERIT (to_pid_to_exec_file, t); |
| 624 | INHERIT (to_log_command, t); |
| 625 | INHERIT (to_stratum, t); |
| 626 | /* Do not inherit to_has_all_memory */ |
| 627 | /* Do not inherit to_has_memory */ |
| 628 | /* Do not inherit to_has_stack */ |
| 629 | /* Do not inherit to_has_registers */ |
| 630 | /* Do not inherit to_has_execution */ |
| 631 | INHERIT (to_has_thread_control, t); |
| 632 | INHERIT (to_can_async_p, t); |
| 633 | INHERIT (to_is_async_p, t); |
| 634 | INHERIT (to_async, t); |
| 635 | INHERIT (to_async_mask, t); |
| 636 | INHERIT (to_find_memory_regions, t); |
| 637 | INHERIT (to_make_corefile_notes, t); |
| 638 | INHERIT (to_get_bookmark, t); |
| 639 | INHERIT (to_goto_bookmark, t); |
| 640 | /* Do not inherit to_get_thread_local_address. */ |
| 641 | INHERIT (to_can_execute_reverse, t); |
| 642 | INHERIT (to_thread_architecture, t); |
| 643 | /* Do not inherit to_read_description. */ |
| 644 | INHERIT (to_get_ada_task_ptid, t); |
| 645 | /* Do not inherit to_search_memory. */ |
| 646 | INHERIT (to_supports_multi_process, t); |
| 647 | INHERIT (to_trace_init, t); |
| 648 | INHERIT (to_download_tracepoint, t); |
| 649 | INHERIT (to_download_trace_state_variable, t); |
| 650 | INHERIT (to_trace_set_readonly_regions, t); |
| 651 | INHERIT (to_trace_start, t); |
| 652 | INHERIT (to_get_trace_status, t); |
| 653 | INHERIT (to_trace_stop, t); |
| 654 | INHERIT (to_trace_find, t); |
| 655 | INHERIT (to_get_trace_state_variable_value, t); |
| 656 | INHERIT (to_save_trace_data, t); |
| 657 | INHERIT (to_upload_tracepoints, t); |
| 658 | INHERIT (to_upload_trace_state_variables, t); |
| 659 | INHERIT (to_get_raw_trace_data, t); |
| 660 | INHERIT (to_set_disconnected_tracing, t); |
| 661 | INHERIT (to_magic, t); |
| 662 | /* Do not inherit to_memory_map. */ |
| 663 | /* Do not inherit to_flash_erase. */ |
| 664 | /* Do not inherit to_flash_done. */ |
| 665 | } |
| 666 | #undef INHERIT |
| 667 | |
| 668 | /* Clean up a target struct so it no longer has any zero pointers in |
| 669 | it. Some entries are defaulted to a method that print an error, |
| 670 | others are hard-wired to a standard recursive default. */ |
| 671 | |
| 672 | #define de_fault(field, value) \ |
| 673 | if (!current_target.field) \ |
| 674 | current_target.field = value |
| 675 | |
| 676 | de_fault (to_open, |
| 677 | (void (*) (char *, int)) |
| 678 | tcomplain); |
| 679 | de_fault (to_close, |
| 680 | (void (*) (int)) |
| 681 | target_ignore); |
| 682 | de_fault (to_post_attach, |
| 683 | (void (*) (int)) |
| 684 | target_ignore); |
| 685 | de_fault (to_prepare_to_store, |
| 686 | (void (*) (struct regcache *)) |
| 687 | noprocess); |
| 688 | de_fault (deprecated_xfer_memory, |
| 689 | (int (*) (CORE_ADDR, gdb_byte *, int, int, struct mem_attrib *, struct target_ops *)) |
| 690 | nomemory); |
| 691 | de_fault (to_files_info, |
| 692 | (void (*) (struct target_ops *)) |
| 693 | target_ignore); |
| 694 | de_fault (to_insert_breakpoint, |
| 695 | memory_insert_breakpoint); |
| 696 | de_fault (to_remove_breakpoint, |
| 697 | memory_remove_breakpoint); |
| 698 | de_fault (to_can_use_hw_breakpoint, |
| 699 | (int (*) (int, int, int)) |
| 700 | return_zero); |
| 701 | de_fault (to_insert_hw_breakpoint, |
| 702 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
| 703 | return_minus_one); |
| 704 | de_fault (to_remove_hw_breakpoint, |
| 705 | (int (*) (struct gdbarch *, struct bp_target_info *)) |
| 706 | return_minus_one); |
| 707 | de_fault (to_insert_watchpoint, |
| 708 | (int (*) (CORE_ADDR, int, int)) |
| 709 | return_minus_one); |
| 710 | de_fault (to_remove_watchpoint, |
| 711 | (int (*) (CORE_ADDR, int, int)) |
| 712 | return_minus_one); |
| 713 | de_fault (to_stopped_by_watchpoint, |
| 714 | (int (*) (void)) |
| 715 | return_zero); |
| 716 | de_fault (to_stopped_data_address, |
| 717 | (int (*) (struct target_ops *, CORE_ADDR *)) |
| 718 | return_zero); |
| 719 | de_fault (to_watchpoint_addr_within_range, |
| 720 | default_watchpoint_addr_within_range); |
| 721 | de_fault (to_region_ok_for_hw_watchpoint, |
| 722 | default_region_ok_for_hw_watchpoint); |
| 723 | de_fault (to_terminal_init, |
| 724 | (void (*) (void)) |
| 725 | target_ignore); |
| 726 | de_fault (to_terminal_inferior, |
| 727 | (void (*) (void)) |
| 728 | target_ignore); |
| 729 | de_fault (to_terminal_ours_for_output, |
| 730 | (void (*) (void)) |
| 731 | target_ignore); |
| 732 | de_fault (to_terminal_ours, |
| 733 | (void (*) (void)) |
| 734 | target_ignore); |
| 735 | de_fault (to_terminal_save_ours, |
| 736 | (void (*) (void)) |
| 737 | target_ignore); |
| 738 | de_fault (to_terminal_info, |
| 739 | default_terminal_info); |
| 740 | de_fault (to_load, |
| 741 | (void (*) (char *, int)) |
| 742 | tcomplain); |
| 743 | de_fault (to_lookup_symbol, |
| 744 | (int (*) (char *, CORE_ADDR *)) |
| 745 | nosymbol); |
| 746 | de_fault (to_post_startup_inferior, |
| 747 | (void (*) (ptid_t)) |
| 748 | target_ignore); |
| 749 | de_fault (to_acknowledge_created_inferior, |
| 750 | (void (*) (int)) |
| 751 | target_ignore); |
| 752 | de_fault (to_insert_fork_catchpoint, |
| 753 | (void (*) (int)) |
| 754 | tcomplain); |
| 755 | de_fault (to_remove_fork_catchpoint, |
| 756 | (int (*) (int)) |
| 757 | tcomplain); |
| 758 | de_fault (to_insert_vfork_catchpoint, |
| 759 | (void (*) (int)) |
| 760 | tcomplain); |
| 761 | de_fault (to_remove_vfork_catchpoint, |
| 762 | (int (*) (int)) |
| 763 | tcomplain); |
| 764 | de_fault (to_insert_exec_catchpoint, |
| 765 | (void (*) (int)) |
| 766 | tcomplain); |
| 767 | de_fault (to_remove_exec_catchpoint, |
| 768 | (int (*) (int)) |
| 769 | tcomplain); |
| 770 | de_fault (to_set_syscall_catchpoint, |
| 771 | (int (*) (int, int, int, int, int *)) |
| 772 | tcomplain); |
| 773 | de_fault (to_has_exited, |
| 774 | (int (*) (int, int, int *)) |
| 775 | return_zero); |
| 776 | de_fault (to_can_run, |
| 777 | return_zero); |
| 778 | de_fault (to_notice_signals, |
| 779 | (void (*) (ptid_t)) |
| 780 | target_ignore); |
| 781 | de_fault (to_extra_thread_info, |
| 782 | (char *(*) (struct thread_info *)) |
| 783 | return_zero); |
| 784 | de_fault (to_stop, |
| 785 | (void (*) (ptid_t)) |
| 786 | target_ignore); |
| 787 | current_target.to_xfer_partial = current_xfer_partial; |
| 788 | de_fault (to_rcmd, |
| 789 | (void (*) (char *, struct ui_file *)) |
| 790 | tcomplain); |
| 791 | de_fault (to_pid_to_exec_file, |
| 792 | (char *(*) (int)) |
| 793 | return_zero); |
| 794 | de_fault (to_async, |
| 795 | (void (*) (void (*) (enum inferior_event_type, void*), void*)) |
| 796 | tcomplain); |
| 797 | de_fault (to_async_mask, |
| 798 | (int (*) (int)) |
| 799 | return_one); |
| 800 | de_fault (to_thread_architecture, |
| 801 | default_thread_architecture); |
| 802 | current_target.to_read_description = NULL; |
| 803 | de_fault (to_get_ada_task_ptid, |
| 804 | (ptid_t (*) (long, long)) |
| 805 | default_get_ada_task_ptid); |
| 806 | de_fault (to_supports_multi_process, |
| 807 | (int (*) (void)) |
| 808 | return_zero); |
| 809 | de_fault (to_trace_init, |
| 810 | (void (*) (void)) |
| 811 | tcomplain); |
| 812 | de_fault (to_download_tracepoint, |
| 813 | (void (*) (struct breakpoint *)) |
| 814 | tcomplain); |
| 815 | de_fault (to_download_trace_state_variable, |
| 816 | (void (*) (struct trace_state_variable *)) |
| 817 | tcomplain); |
| 818 | de_fault (to_trace_set_readonly_regions, |
| 819 | (void (*) (void)) |
| 820 | tcomplain); |
| 821 | de_fault (to_trace_start, |
| 822 | (void (*) (void)) |
| 823 | tcomplain); |
| 824 | de_fault (to_get_trace_status, |
| 825 | (int (*) (struct trace_status *)) |
| 826 | return_minus_one); |
| 827 | de_fault (to_trace_stop, |
| 828 | (void (*) (void)) |
| 829 | tcomplain); |
| 830 | de_fault (to_trace_find, |
| 831 | (int (*) (enum trace_find_type, int, ULONGEST, ULONGEST, int *)) |
| 832 | return_zero); |
| 833 | de_fault (to_get_trace_state_variable_value, |
| 834 | (int (*) (int, LONGEST *)) |
| 835 | return_zero); |
| 836 | de_fault (to_save_trace_data, |
| 837 | (int (*) (char *)) |
| 838 | tcomplain); |
| 839 | de_fault (to_upload_tracepoints, |
| 840 | (int (*) (struct uploaded_tp **)) |
| 841 | return_zero); |
| 842 | de_fault (to_upload_trace_state_variables, |
| 843 | (int (*) (struct uploaded_tsv **)) |
| 844 | return_zero); |
| 845 | de_fault (to_get_raw_trace_data, |
| 846 | (LONGEST (*) (gdb_byte *, ULONGEST, LONGEST)) |
| 847 | tcomplain); |
| 848 | de_fault (to_set_disconnected_tracing, |
| 849 | (void (*) (int)) |
| 850 | tcomplain); |
| 851 | #undef de_fault |
| 852 | |
| 853 | /* Finally, position the target-stack beneath the squashed |
| 854 | "current_target". That way code looking for a non-inherited |
| 855 | target method can quickly and simply find it. */ |
| 856 | current_target.beneath = target_stack; |
| 857 | |
| 858 | if (targetdebug) |
| 859 | setup_target_debug (); |
| 860 | } |
| 861 | |
| 862 | /* Push a new target type into the stack of the existing target accessors, |
| 863 | possibly superseding some of the existing accessors. |
| 864 | |
| 865 | Result is zero if the pushed target ended up on top of the stack, |
| 866 | nonzero if at least one target is on top of it. |
| 867 | |
| 868 | Rather than allow an empty stack, we always have the dummy target at |
| 869 | the bottom stratum, so we can call the function vectors without |
| 870 | checking them. */ |
| 871 | |
| 872 | int |
| 873 | push_target (struct target_ops *t) |
| 874 | { |
| 875 | struct target_ops **cur; |
| 876 | |
| 877 | /* Check magic number. If wrong, it probably means someone changed |
| 878 | the struct definition, but not all the places that initialize one. */ |
| 879 | if (t->to_magic != OPS_MAGIC) |
| 880 | { |
| 881 | fprintf_unfiltered (gdb_stderr, |
| 882 | "Magic number of %s target struct wrong\n", |
| 883 | t->to_shortname); |
| 884 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| 885 | } |
| 886 | |
| 887 | /* Find the proper stratum to install this target in. */ |
| 888 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
| 889 | { |
| 890 | if ((int) (t->to_stratum) >= (int) (*cur)->to_stratum) |
| 891 | break; |
| 892 | } |
| 893 | |
| 894 | /* If there's already targets at this stratum, remove them. */ |
| 895 | /* FIXME: cagney/2003-10-15: I think this should be popping all |
| 896 | targets to CUR, and not just those at this stratum level. */ |
| 897 | while ((*cur) != NULL && t->to_stratum == (*cur)->to_stratum) |
| 898 | { |
| 899 | /* There's already something at this stratum level. Close it, |
| 900 | and un-hook it from the stack. */ |
| 901 | struct target_ops *tmp = (*cur); |
| 902 | (*cur) = (*cur)->beneath; |
| 903 | tmp->beneath = NULL; |
| 904 | target_close (tmp, 0); |
| 905 | } |
| 906 | |
| 907 | /* We have removed all targets in our stratum, now add the new one. */ |
| 908 | t->beneath = (*cur); |
| 909 | (*cur) = t; |
| 910 | |
| 911 | update_current_target (); |
| 912 | |
| 913 | /* Not on top? */ |
| 914 | return (t != target_stack); |
| 915 | } |
| 916 | |
| 917 | /* Remove a target_ops vector from the stack, wherever it may be. |
| 918 | Return how many times it was removed (0 or 1). */ |
| 919 | |
| 920 | int |
| 921 | unpush_target (struct target_ops *t) |
| 922 | { |
| 923 | struct target_ops **cur; |
| 924 | struct target_ops *tmp; |
| 925 | |
| 926 | if (t->to_stratum == dummy_stratum) |
| 927 | internal_error (__FILE__, __LINE__, |
| 928 | "Attempt to unpush the dummy target"); |
| 929 | |
| 930 | /* Look for the specified target. Note that we assume that a target |
| 931 | can only occur once in the target stack. */ |
| 932 | |
| 933 | for (cur = &target_stack; (*cur) != NULL; cur = &(*cur)->beneath) |
| 934 | { |
| 935 | if ((*cur) == t) |
| 936 | break; |
| 937 | } |
| 938 | |
| 939 | if ((*cur) == NULL) |
| 940 | return 0; /* Didn't find target_ops, quit now */ |
| 941 | |
| 942 | /* NOTE: cagney/2003-12-06: In '94 the close call was made |
| 943 | unconditional by moving it to before the above check that the |
| 944 | target was in the target stack (something about "Change the way |
| 945 | pushing and popping of targets work to support target overlays |
| 946 | and inheritance"). This doesn't make much sense - only open |
| 947 | targets should be closed. */ |
| 948 | target_close (t, 0); |
| 949 | |
| 950 | /* Unchain the target */ |
| 951 | tmp = (*cur); |
| 952 | (*cur) = (*cur)->beneath; |
| 953 | tmp->beneath = NULL; |
| 954 | |
| 955 | update_current_target (); |
| 956 | |
| 957 | return 1; |
| 958 | } |
| 959 | |
| 960 | void |
| 961 | pop_target (void) |
| 962 | { |
| 963 | target_close (target_stack, 0); /* Let it clean up */ |
| 964 | if (unpush_target (target_stack) == 1) |
| 965 | return; |
| 966 | |
| 967 | fprintf_unfiltered (gdb_stderr, |
| 968 | "pop_target couldn't find target %s\n", |
| 969 | current_target.to_shortname); |
| 970 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
| 971 | } |
| 972 | |
| 973 | void |
| 974 | pop_all_targets_above (enum strata above_stratum, int quitting) |
| 975 | { |
| 976 | while ((int) (current_target.to_stratum) > (int) above_stratum) |
| 977 | { |
| 978 | target_close (target_stack, quitting); |
| 979 | if (!unpush_target (target_stack)) |
| 980 | { |
| 981 | fprintf_unfiltered (gdb_stderr, |
| 982 | "pop_all_targets couldn't find target %s\n", |
| 983 | target_stack->to_shortname); |
| 984 | internal_error (__FILE__, __LINE__, |
| 985 | _("failed internal consistency check")); |
| 986 | break; |
| 987 | } |
| 988 | } |
| 989 | } |
| 990 | |
| 991 | void |
| 992 | pop_all_targets (int quitting) |
| 993 | { |
| 994 | pop_all_targets_above (dummy_stratum, quitting); |
| 995 | } |
| 996 | |
| 997 | /* Using the objfile specified in OBJFILE, find the address for the |
| 998 | current thread's thread-local storage with offset OFFSET. */ |
| 999 | CORE_ADDR |
| 1000 | target_translate_tls_address (struct objfile *objfile, CORE_ADDR offset) |
| 1001 | { |
| 1002 | volatile CORE_ADDR addr = 0; |
| 1003 | struct target_ops *target; |
| 1004 | |
| 1005 | for (target = current_target.beneath; |
| 1006 | target != NULL; |
| 1007 | target = target->beneath) |
| 1008 | { |
| 1009 | if (target->to_get_thread_local_address != NULL) |
| 1010 | break; |
| 1011 | } |
| 1012 | |
| 1013 | if (target != NULL |
| 1014 | && gdbarch_fetch_tls_load_module_address_p (target_gdbarch)) |
| 1015 | { |
| 1016 | ptid_t ptid = inferior_ptid; |
| 1017 | volatile struct gdb_exception ex; |
| 1018 | |
| 1019 | TRY_CATCH (ex, RETURN_MASK_ALL) |
| 1020 | { |
| 1021 | CORE_ADDR lm_addr; |
| 1022 | |
| 1023 | /* Fetch the load module address for this objfile. */ |
| 1024 | lm_addr = gdbarch_fetch_tls_load_module_address (target_gdbarch, |
| 1025 | objfile); |
| 1026 | /* If it's 0, throw the appropriate exception. */ |
| 1027 | if (lm_addr == 0) |
| 1028 | throw_error (TLS_LOAD_MODULE_NOT_FOUND_ERROR, |
| 1029 | _("TLS load module not found")); |
| 1030 | |
| 1031 | addr = target->to_get_thread_local_address (target, ptid, lm_addr, offset); |
| 1032 | } |
| 1033 | /* If an error occurred, print TLS related messages here. Otherwise, |
| 1034 | throw the error to some higher catcher. */ |
| 1035 | if (ex.reason < 0) |
| 1036 | { |
| 1037 | int objfile_is_library = (objfile->flags & OBJF_SHARED); |
| 1038 | |
| 1039 | switch (ex.error) |
| 1040 | { |
| 1041 | case TLS_NO_LIBRARY_SUPPORT_ERROR: |
| 1042 | error (_("Cannot find thread-local variables in this thread library.")); |
| 1043 | break; |
| 1044 | case TLS_LOAD_MODULE_NOT_FOUND_ERROR: |
| 1045 | if (objfile_is_library) |
| 1046 | error (_("Cannot find shared library `%s' in dynamic" |
| 1047 | " linker's load module list"), objfile->name); |
| 1048 | else |
| 1049 | error (_("Cannot find executable file `%s' in dynamic" |
| 1050 | " linker's load module list"), objfile->name); |
| 1051 | break; |
| 1052 | case TLS_NOT_ALLOCATED_YET_ERROR: |
| 1053 | if (objfile_is_library) |
| 1054 | error (_("The inferior has not yet allocated storage for" |
| 1055 | " thread-local variables in\n" |
| 1056 | "the shared library `%s'\n" |
| 1057 | "for %s"), |
| 1058 | objfile->name, target_pid_to_str (ptid)); |
| 1059 | else |
| 1060 | error (_("The inferior has not yet allocated storage for" |
| 1061 | " thread-local variables in\n" |
| 1062 | "the executable `%s'\n" |
| 1063 | "for %s"), |
| 1064 | objfile->name, target_pid_to_str (ptid)); |
| 1065 | break; |
| 1066 | case TLS_GENERIC_ERROR: |
| 1067 | if (objfile_is_library) |
| 1068 | error (_("Cannot find thread-local storage for %s, " |
| 1069 | "shared library %s:\n%s"), |
| 1070 | target_pid_to_str (ptid), |
| 1071 | objfile->name, ex.message); |
| 1072 | else |
| 1073 | error (_("Cannot find thread-local storage for %s, " |
| 1074 | "executable file %s:\n%s"), |
| 1075 | target_pid_to_str (ptid), |
| 1076 | objfile->name, ex.message); |
| 1077 | break; |
| 1078 | default: |
| 1079 | throw_exception (ex); |
| 1080 | break; |
| 1081 | } |
| 1082 | } |
| 1083 | } |
| 1084 | /* It wouldn't be wrong here to try a gdbarch method, too; finding |
| 1085 | TLS is an ABI-specific thing. But we don't do that yet. */ |
| 1086 | else |
| 1087 | error (_("Cannot find thread-local variables on this target")); |
| 1088 | |
| 1089 | return addr; |
| 1090 | } |
| 1091 | |
| 1092 | #undef MIN |
| 1093 | #define MIN(A, B) (((A) <= (B)) ? (A) : (B)) |
| 1094 | |
| 1095 | /* target_read_string -- read a null terminated string, up to LEN bytes, |
| 1096 | from MEMADDR in target. Set *ERRNOP to the errno code, or 0 if successful. |
| 1097 | Set *STRING to a pointer to malloc'd memory containing the data; the caller |
| 1098 | is responsible for freeing it. Return the number of bytes successfully |
| 1099 | read. */ |
| 1100 | |
| 1101 | int |
| 1102 | target_read_string (CORE_ADDR memaddr, char **string, int len, int *errnop) |
| 1103 | { |
| 1104 | int tlen, origlen, offset, i; |
| 1105 | gdb_byte buf[4]; |
| 1106 | int errcode = 0; |
| 1107 | char *buffer; |
| 1108 | int buffer_allocated; |
| 1109 | char *bufptr; |
| 1110 | unsigned int nbytes_read = 0; |
| 1111 | |
| 1112 | gdb_assert (string); |
| 1113 | |
| 1114 | /* Small for testing. */ |
| 1115 | buffer_allocated = 4; |
| 1116 | buffer = xmalloc (buffer_allocated); |
| 1117 | bufptr = buffer; |
| 1118 | |
| 1119 | origlen = len; |
| 1120 | |
| 1121 | while (len > 0) |
| 1122 | { |
| 1123 | tlen = MIN (len, 4 - (memaddr & 3)); |
| 1124 | offset = memaddr & 3; |
| 1125 | |
| 1126 | errcode = target_read_memory (memaddr & ~3, buf, sizeof buf); |
| 1127 | if (errcode != 0) |
| 1128 | { |
| 1129 | /* The transfer request might have crossed the boundary to an |
| 1130 | unallocated region of memory. Retry the transfer, requesting |
| 1131 | a single byte. */ |
| 1132 | tlen = 1; |
| 1133 | offset = 0; |
| 1134 | errcode = target_read_memory (memaddr, buf, 1); |
| 1135 | if (errcode != 0) |
| 1136 | goto done; |
| 1137 | } |
| 1138 | |
| 1139 | if (bufptr - buffer + tlen > buffer_allocated) |
| 1140 | { |
| 1141 | unsigned int bytes; |
| 1142 | bytes = bufptr - buffer; |
| 1143 | buffer_allocated *= 2; |
| 1144 | buffer = xrealloc (buffer, buffer_allocated); |
| 1145 | bufptr = buffer + bytes; |
| 1146 | } |
| 1147 | |
| 1148 | for (i = 0; i < tlen; i++) |
| 1149 | { |
| 1150 | *bufptr++ = buf[i + offset]; |
| 1151 | if (buf[i + offset] == '\000') |
| 1152 | { |
| 1153 | nbytes_read += i + 1; |
| 1154 | goto done; |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | memaddr += tlen; |
| 1159 | len -= tlen; |
| 1160 | nbytes_read += tlen; |
| 1161 | } |
| 1162 | done: |
| 1163 | *string = buffer; |
| 1164 | if (errnop != NULL) |
| 1165 | *errnop = errcode; |
| 1166 | return nbytes_read; |
| 1167 | } |
| 1168 | |
| 1169 | struct target_section_table * |
| 1170 | target_get_section_table (struct target_ops *target) |
| 1171 | { |
| 1172 | struct target_ops *t; |
| 1173 | |
| 1174 | if (targetdebug) |
| 1175 | fprintf_unfiltered (gdb_stdlog, "target_get_section_table ()\n"); |
| 1176 | |
| 1177 | for (t = target; t != NULL; t = t->beneath) |
| 1178 | if (t->to_get_section_table != NULL) |
| 1179 | return (*t->to_get_section_table) (t); |
| 1180 | |
| 1181 | return NULL; |
| 1182 | } |
| 1183 | |
| 1184 | /* Find a section containing ADDR. */ |
| 1185 | |
| 1186 | struct target_section * |
| 1187 | target_section_by_addr (struct target_ops *target, CORE_ADDR addr) |
| 1188 | { |
| 1189 | struct target_section_table *table = target_get_section_table (target); |
| 1190 | struct target_section *secp; |
| 1191 | |
| 1192 | if (table == NULL) |
| 1193 | return NULL; |
| 1194 | |
| 1195 | for (secp = table->sections; secp < table->sections_end; secp++) |
| 1196 | { |
| 1197 | if (addr >= secp->addr && addr < secp->endaddr) |
| 1198 | return secp; |
| 1199 | } |
| 1200 | return NULL; |
| 1201 | } |
| 1202 | |
| 1203 | /* Perform a partial memory transfer. |
| 1204 | For docs see target.h, to_xfer_partial. */ |
| 1205 | |
| 1206 | static LONGEST |
| 1207 | memory_xfer_partial (struct target_ops *ops, enum target_object object, |
| 1208 | void *readbuf, const void *writebuf, ULONGEST memaddr, |
| 1209 | LONGEST len) |
| 1210 | { |
| 1211 | LONGEST res; |
| 1212 | int reg_len; |
| 1213 | struct mem_region *region; |
| 1214 | struct inferior *inf; |
| 1215 | |
| 1216 | /* Zero length requests are ok and require no work. */ |
| 1217 | if (len == 0) |
| 1218 | return 0; |
| 1219 | |
| 1220 | /* For accesses to unmapped overlay sections, read directly from |
| 1221 | files. Must do this first, as MEMADDR may need adjustment. */ |
| 1222 | if (readbuf != NULL && overlay_debugging) |
| 1223 | { |
| 1224 | struct obj_section *section = find_pc_overlay (memaddr); |
| 1225 | if (pc_in_unmapped_range (memaddr, section)) |
| 1226 | { |
| 1227 | struct target_section_table *table |
| 1228 | = target_get_section_table (ops); |
| 1229 | const char *section_name = section->the_bfd_section->name; |
| 1230 | memaddr = overlay_mapped_address (memaddr, section); |
| 1231 | return section_table_xfer_memory_partial (readbuf, writebuf, |
| 1232 | memaddr, len, |
| 1233 | table->sections, |
| 1234 | table->sections_end, |
| 1235 | section_name); |
| 1236 | } |
| 1237 | } |
| 1238 | |
| 1239 | /* Try the executable files, if "trust-readonly-sections" is set. */ |
| 1240 | if (readbuf != NULL && trust_readonly) |
| 1241 | { |
| 1242 | struct target_section *secp; |
| 1243 | struct target_section_table *table; |
| 1244 | |
| 1245 | secp = target_section_by_addr (ops, memaddr); |
| 1246 | if (secp != NULL |
| 1247 | && (bfd_get_section_flags (secp->bfd, secp->the_bfd_section) |
| 1248 | & SEC_READONLY)) |
| 1249 | { |
| 1250 | table = target_get_section_table (ops); |
| 1251 | return section_table_xfer_memory_partial (readbuf, writebuf, |
| 1252 | memaddr, len, |
| 1253 | table->sections, |
| 1254 | table->sections_end, |
| 1255 | NULL); |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | /* Try GDB's internal data cache. */ |
| 1260 | region = lookup_mem_region (memaddr); |
| 1261 | /* region->hi == 0 means there's no upper bound. */ |
| 1262 | if (memaddr + len < region->hi || region->hi == 0) |
| 1263 | reg_len = len; |
| 1264 | else |
| 1265 | reg_len = region->hi - memaddr; |
| 1266 | |
| 1267 | switch (region->attrib.mode) |
| 1268 | { |
| 1269 | case MEM_RO: |
| 1270 | if (writebuf != NULL) |
| 1271 | return -1; |
| 1272 | break; |
| 1273 | |
| 1274 | case MEM_WO: |
| 1275 | if (readbuf != NULL) |
| 1276 | return -1; |
| 1277 | break; |
| 1278 | |
| 1279 | case MEM_FLASH: |
| 1280 | /* We only support writing to flash during "load" for now. */ |
| 1281 | if (writebuf != NULL) |
| 1282 | error (_("Writing to flash memory forbidden in this context")); |
| 1283 | break; |
| 1284 | |
| 1285 | case MEM_NONE: |
| 1286 | return -1; |
| 1287 | } |
| 1288 | |
| 1289 | if (!ptid_equal (inferior_ptid, null_ptid)) |
| 1290 | inf = find_inferior_pid (ptid_get_pid (inferior_ptid)); |
| 1291 | else |
| 1292 | inf = NULL; |
| 1293 | |
| 1294 | if (inf != NULL |
| 1295 | && (region->attrib.cache |
| 1296 | || (stack_cache_enabled_p && object == TARGET_OBJECT_STACK_MEMORY))) |
| 1297 | { |
| 1298 | if (readbuf != NULL) |
| 1299 | res = dcache_xfer_memory (ops, target_dcache, memaddr, readbuf, |
| 1300 | reg_len, 0); |
| 1301 | else |
| 1302 | /* FIXME drow/2006-08-09: If we're going to preserve const |
| 1303 | correctness dcache_xfer_memory should take readbuf and |
| 1304 | writebuf. */ |
| 1305 | res = dcache_xfer_memory (ops, target_dcache, memaddr, |
| 1306 | (void *) writebuf, |
| 1307 | reg_len, 1); |
| 1308 | if (res <= 0) |
| 1309 | return -1; |
| 1310 | else |
| 1311 | { |
| 1312 | if (readbuf && !show_memory_breakpoints) |
| 1313 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); |
| 1314 | return res; |
| 1315 | } |
| 1316 | } |
| 1317 | |
| 1318 | /* If none of those methods found the memory we wanted, fall back |
| 1319 | to a target partial transfer. Normally a single call to |
| 1320 | to_xfer_partial is enough; if it doesn't recognize an object |
| 1321 | it will call the to_xfer_partial of the next target down. |
| 1322 | But for memory this won't do. Memory is the only target |
| 1323 | object which can be read from more than one valid target. |
| 1324 | A core file, for instance, could have some of memory but |
| 1325 | delegate other bits to the target below it. So, we must |
| 1326 | manually try all targets. */ |
| 1327 | |
| 1328 | do |
| 1329 | { |
| 1330 | res = ops->to_xfer_partial (ops, TARGET_OBJECT_MEMORY, NULL, |
| 1331 | readbuf, writebuf, memaddr, reg_len); |
| 1332 | if (res > 0) |
| 1333 | break; |
| 1334 | |
| 1335 | /* We want to continue past core files to executables, but not |
| 1336 | past a running target's memory. */ |
| 1337 | if (ops->to_has_all_memory (ops)) |
| 1338 | break; |
| 1339 | |
| 1340 | ops = ops->beneath; |
| 1341 | } |
| 1342 | while (ops != NULL); |
| 1343 | |
| 1344 | if (readbuf && !show_memory_breakpoints) |
| 1345 | breakpoint_restore_shadows (readbuf, memaddr, reg_len); |
| 1346 | |
| 1347 | /* Make sure the cache gets updated no matter what - if we are writing |
| 1348 | to the stack. Even if this write is not tagged as such, we still need |
| 1349 | to update the cache. */ |
| 1350 | |
| 1351 | if (res > 0 |
| 1352 | && inf != NULL |
| 1353 | && writebuf != NULL |
| 1354 | && !region->attrib.cache |
| 1355 | && stack_cache_enabled_p |
| 1356 | && object != TARGET_OBJECT_STACK_MEMORY) |
| 1357 | { |
| 1358 | dcache_update (target_dcache, memaddr, (void *) writebuf, res); |
| 1359 | } |
| 1360 | |
| 1361 | /* If we still haven't got anything, return the last error. We |
| 1362 | give up. */ |
| 1363 | return res; |
| 1364 | } |
| 1365 | |
| 1366 | static void |
| 1367 | restore_show_memory_breakpoints (void *arg) |
| 1368 | { |
| 1369 | show_memory_breakpoints = (uintptr_t) arg; |
| 1370 | } |
| 1371 | |
| 1372 | struct cleanup * |
| 1373 | make_show_memory_breakpoints_cleanup (int show) |
| 1374 | { |
| 1375 | int current = show_memory_breakpoints; |
| 1376 | show_memory_breakpoints = show; |
| 1377 | |
| 1378 | return make_cleanup (restore_show_memory_breakpoints, |
| 1379 | (void *) (uintptr_t) current); |
| 1380 | } |
| 1381 | |
| 1382 | /* For docs see target.h, to_xfer_partial. */ |
| 1383 | |
| 1384 | static LONGEST |
| 1385 | target_xfer_partial (struct target_ops *ops, |
| 1386 | enum target_object object, const char *annex, |
| 1387 | void *readbuf, const void *writebuf, |
| 1388 | ULONGEST offset, LONGEST len) |
| 1389 | { |
| 1390 | LONGEST retval; |
| 1391 | |
| 1392 | gdb_assert (ops->to_xfer_partial != NULL); |
| 1393 | |
| 1394 | /* If this is a memory transfer, let the memory-specific code |
| 1395 | have a look at it instead. Memory transfers are more |
| 1396 | complicated. */ |
| 1397 | if (object == TARGET_OBJECT_MEMORY || object == TARGET_OBJECT_STACK_MEMORY) |
| 1398 | retval = memory_xfer_partial (ops, object, readbuf, |
| 1399 | writebuf, offset, len); |
| 1400 | else |
| 1401 | { |
| 1402 | enum target_object raw_object = object; |
| 1403 | |
| 1404 | /* If this is a raw memory transfer, request the normal |
| 1405 | memory object from other layers. */ |
| 1406 | if (raw_object == TARGET_OBJECT_RAW_MEMORY) |
| 1407 | raw_object = TARGET_OBJECT_MEMORY; |
| 1408 | |
| 1409 | retval = ops->to_xfer_partial (ops, raw_object, annex, readbuf, |
| 1410 | writebuf, offset, len); |
| 1411 | } |
| 1412 | |
| 1413 | if (targetdebug) |
| 1414 | { |
| 1415 | const unsigned char *myaddr = NULL; |
| 1416 | |
| 1417 | fprintf_unfiltered (gdb_stdlog, |
| 1418 | "%s:target_xfer_partial (%d, %s, %s, %s, %s, %s) = %s", |
| 1419 | ops->to_shortname, |
| 1420 | (int) object, |
| 1421 | (annex ? annex : "(null)"), |
| 1422 | host_address_to_string (readbuf), |
| 1423 | host_address_to_string (writebuf), |
| 1424 | core_addr_to_string_nz (offset), |
| 1425 | plongest (len), plongest (retval)); |
| 1426 | |
| 1427 | if (readbuf) |
| 1428 | myaddr = readbuf; |
| 1429 | if (writebuf) |
| 1430 | myaddr = writebuf; |
| 1431 | if (retval > 0 && myaddr != NULL) |
| 1432 | { |
| 1433 | int i; |
| 1434 | |
| 1435 | fputs_unfiltered (", bytes =", gdb_stdlog); |
| 1436 | for (i = 0; i < retval; i++) |
| 1437 | { |
| 1438 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
| 1439 | { |
| 1440 | if (targetdebug < 2 && i > 0) |
| 1441 | { |
| 1442 | fprintf_unfiltered (gdb_stdlog, " ..."); |
| 1443 | break; |
| 1444 | } |
| 1445 | fprintf_unfiltered (gdb_stdlog, "\n"); |
| 1446 | } |
| 1447 | |
| 1448 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | fputc_unfiltered ('\n', gdb_stdlog); |
| 1453 | } |
| 1454 | return retval; |
| 1455 | } |
| 1456 | |
| 1457 | /* Read LEN bytes of target memory at address MEMADDR, placing the results in |
| 1458 | GDB's memory at MYADDR. Returns either 0 for success or an errno value |
| 1459 | if any error occurs. |
| 1460 | |
| 1461 | If an error occurs, no guarantee is made about the contents of the data at |
| 1462 | MYADDR. In particular, the caller should not depend upon partial reads |
| 1463 | filling the buffer with good data. There is no way for the caller to know |
| 1464 | how much good data might have been transfered anyway. Callers that can |
| 1465 | deal with partial reads should call target_read (which will retry until |
| 1466 | it makes no progress, and then return how much was transferred). */ |
| 1467 | |
| 1468 | int |
| 1469 | target_read_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
| 1470 | { |
| 1471 | /* Dispatch to the topmost target, not the flattened current_target. |
| 1472 | Memory accesses check target->to_has_(all_)memory, and the |
| 1473 | flattened target doesn't inherit those. */ |
| 1474 | if (target_read (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
| 1475 | myaddr, memaddr, len) == len) |
| 1476 | return 0; |
| 1477 | else |
| 1478 | return EIO; |
| 1479 | } |
| 1480 | |
| 1481 | /* Like target_read_memory, but specify explicitly that this is a read from |
| 1482 | the target's stack. This may trigger different cache behavior. */ |
| 1483 | |
| 1484 | int |
| 1485 | target_read_stack (CORE_ADDR memaddr, gdb_byte *myaddr, int len) |
| 1486 | { |
| 1487 | /* Dispatch to the topmost target, not the flattened current_target. |
| 1488 | Memory accesses check target->to_has_(all_)memory, and the |
| 1489 | flattened target doesn't inherit those. */ |
| 1490 | |
| 1491 | if (target_read (current_target.beneath, TARGET_OBJECT_STACK_MEMORY, NULL, |
| 1492 | myaddr, memaddr, len) == len) |
| 1493 | return 0; |
| 1494 | else |
| 1495 | return EIO; |
| 1496 | } |
| 1497 | |
| 1498 | /* Write LEN bytes from MYADDR to target memory at address MEMADDR. |
| 1499 | Returns either 0 for success or an errno value if any error occurs. |
| 1500 | If an error occurs, no guarantee is made about how much data got written. |
| 1501 | Callers that can deal with partial writes should call target_write. */ |
| 1502 | |
| 1503 | int |
| 1504 | target_write_memory (CORE_ADDR memaddr, const gdb_byte *myaddr, int len) |
| 1505 | { |
| 1506 | /* Dispatch to the topmost target, not the flattened current_target. |
| 1507 | Memory accesses check target->to_has_(all_)memory, and the |
| 1508 | flattened target doesn't inherit those. */ |
| 1509 | if (target_write (current_target.beneath, TARGET_OBJECT_MEMORY, NULL, |
| 1510 | myaddr, memaddr, len) == len) |
| 1511 | return 0; |
| 1512 | else |
| 1513 | return EIO; |
| 1514 | } |
| 1515 | |
| 1516 | /* Fetch the target's memory map. */ |
| 1517 | |
| 1518 | VEC(mem_region_s) * |
| 1519 | target_memory_map (void) |
| 1520 | { |
| 1521 | VEC(mem_region_s) *result; |
| 1522 | struct mem_region *last_one, *this_one; |
| 1523 | int ix; |
| 1524 | struct target_ops *t; |
| 1525 | |
| 1526 | if (targetdebug) |
| 1527 | fprintf_unfiltered (gdb_stdlog, "target_memory_map ()\n"); |
| 1528 | |
| 1529 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 1530 | if (t->to_memory_map != NULL) |
| 1531 | break; |
| 1532 | |
| 1533 | if (t == NULL) |
| 1534 | return NULL; |
| 1535 | |
| 1536 | result = t->to_memory_map (t); |
| 1537 | if (result == NULL) |
| 1538 | return NULL; |
| 1539 | |
| 1540 | qsort (VEC_address (mem_region_s, result), |
| 1541 | VEC_length (mem_region_s, result), |
| 1542 | sizeof (struct mem_region), mem_region_cmp); |
| 1543 | |
| 1544 | /* Check that regions do not overlap. Simultaneously assign |
| 1545 | a numbering for the "mem" commands to use to refer to |
| 1546 | each region. */ |
| 1547 | last_one = NULL; |
| 1548 | for (ix = 0; VEC_iterate (mem_region_s, result, ix, this_one); ix++) |
| 1549 | { |
| 1550 | this_one->number = ix; |
| 1551 | |
| 1552 | if (last_one && last_one->hi > this_one->lo) |
| 1553 | { |
| 1554 | warning (_("Overlapping regions in memory map: ignoring")); |
| 1555 | VEC_free (mem_region_s, result); |
| 1556 | return NULL; |
| 1557 | } |
| 1558 | last_one = this_one; |
| 1559 | } |
| 1560 | |
| 1561 | return result; |
| 1562 | } |
| 1563 | |
| 1564 | void |
| 1565 | target_flash_erase (ULONGEST address, LONGEST length) |
| 1566 | { |
| 1567 | struct target_ops *t; |
| 1568 | |
| 1569 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 1570 | if (t->to_flash_erase != NULL) |
| 1571 | { |
| 1572 | if (targetdebug) |
| 1573 | fprintf_unfiltered (gdb_stdlog, "target_flash_erase (%s, %s)\n", |
| 1574 | hex_string (address), phex (length, 0)); |
| 1575 | t->to_flash_erase (t, address, length); |
| 1576 | return; |
| 1577 | } |
| 1578 | |
| 1579 | tcomplain (); |
| 1580 | } |
| 1581 | |
| 1582 | void |
| 1583 | target_flash_done (void) |
| 1584 | { |
| 1585 | struct target_ops *t; |
| 1586 | |
| 1587 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 1588 | if (t->to_flash_done != NULL) |
| 1589 | { |
| 1590 | if (targetdebug) |
| 1591 | fprintf_unfiltered (gdb_stdlog, "target_flash_done\n"); |
| 1592 | t->to_flash_done (t); |
| 1593 | return; |
| 1594 | } |
| 1595 | |
| 1596 | tcomplain (); |
| 1597 | } |
| 1598 | |
| 1599 | static void |
| 1600 | show_trust_readonly (struct ui_file *file, int from_tty, |
| 1601 | struct cmd_list_element *c, const char *value) |
| 1602 | { |
| 1603 | fprintf_filtered (file, _("\ |
| 1604 | Mode for reading from readonly sections is %s.\n"), |
| 1605 | value); |
| 1606 | } |
| 1607 | |
| 1608 | /* More generic transfers. */ |
| 1609 | |
| 1610 | static LONGEST |
| 1611 | default_xfer_partial (struct target_ops *ops, enum target_object object, |
| 1612 | const char *annex, gdb_byte *readbuf, |
| 1613 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
| 1614 | { |
| 1615 | if (object == TARGET_OBJECT_MEMORY |
| 1616 | && ops->deprecated_xfer_memory != NULL) |
| 1617 | /* If available, fall back to the target's |
| 1618 | "deprecated_xfer_memory" method. */ |
| 1619 | { |
| 1620 | int xfered = -1; |
| 1621 | errno = 0; |
| 1622 | if (writebuf != NULL) |
| 1623 | { |
| 1624 | void *buffer = xmalloc (len); |
| 1625 | struct cleanup *cleanup = make_cleanup (xfree, buffer); |
| 1626 | memcpy (buffer, writebuf, len); |
| 1627 | xfered = ops->deprecated_xfer_memory (offset, buffer, len, |
| 1628 | 1/*write*/, NULL, ops); |
| 1629 | do_cleanups (cleanup); |
| 1630 | } |
| 1631 | if (readbuf != NULL) |
| 1632 | xfered = ops->deprecated_xfer_memory (offset, readbuf, len, |
| 1633 | 0/*read*/, NULL, ops); |
| 1634 | if (xfered > 0) |
| 1635 | return xfered; |
| 1636 | else if (xfered == 0 && errno == 0) |
| 1637 | /* "deprecated_xfer_memory" uses 0, cross checked against |
| 1638 | ERRNO as one indication of an error. */ |
| 1639 | return 0; |
| 1640 | else |
| 1641 | return -1; |
| 1642 | } |
| 1643 | else if (ops->beneath != NULL) |
| 1644 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
| 1645 | readbuf, writebuf, offset, len); |
| 1646 | else |
| 1647 | return -1; |
| 1648 | } |
| 1649 | |
| 1650 | /* The xfer_partial handler for the topmost target. Unlike the default, |
| 1651 | it does not need to handle memory specially; it just passes all |
| 1652 | requests down the stack. */ |
| 1653 | |
| 1654 | static LONGEST |
| 1655 | current_xfer_partial (struct target_ops *ops, enum target_object object, |
| 1656 | const char *annex, gdb_byte *readbuf, |
| 1657 | const gdb_byte *writebuf, ULONGEST offset, LONGEST len) |
| 1658 | { |
| 1659 | if (ops->beneath != NULL) |
| 1660 | return ops->beneath->to_xfer_partial (ops->beneath, object, annex, |
| 1661 | readbuf, writebuf, offset, len); |
| 1662 | else |
| 1663 | return -1; |
| 1664 | } |
| 1665 | |
| 1666 | /* Target vector read/write partial wrapper functions. */ |
| 1667 | |
| 1668 | static LONGEST |
| 1669 | target_read_partial (struct target_ops *ops, |
| 1670 | enum target_object object, |
| 1671 | const char *annex, gdb_byte *buf, |
| 1672 | ULONGEST offset, LONGEST len) |
| 1673 | { |
| 1674 | return target_xfer_partial (ops, object, annex, buf, NULL, offset, len); |
| 1675 | } |
| 1676 | |
| 1677 | static LONGEST |
| 1678 | target_write_partial (struct target_ops *ops, |
| 1679 | enum target_object object, |
| 1680 | const char *annex, const gdb_byte *buf, |
| 1681 | ULONGEST offset, LONGEST len) |
| 1682 | { |
| 1683 | return target_xfer_partial (ops, object, annex, NULL, buf, offset, len); |
| 1684 | } |
| 1685 | |
| 1686 | /* Wrappers to perform the full transfer. */ |
| 1687 | |
| 1688 | /* For docs on target_read see target.h. */ |
| 1689 | |
| 1690 | LONGEST |
| 1691 | target_read (struct target_ops *ops, |
| 1692 | enum target_object object, |
| 1693 | const char *annex, gdb_byte *buf, |
| 1694 | ULONGEST offset, LONGEST len) |
| 1695 | { |
| 1696 | LONGEST xfered = 0; |
| 1697 | while (xfered < len) |
| 1698 | { |
| 1699 | LONGEST xfer = target_read_partial (ops, object, annex, |
| 1700 | (gdb_byte *) buf + xfered, |
| 1701 | offset + xfered, len - xfered); |
| 1702 | /* Call an observer, notifying them of the xfer progress? */ |
| 1703 | if (xfer == 0) |
| 1704 | return xfered; |
| 1705 | if (xfer < 0) |
| 1706 | return -1; |
| 1707 | xfered += xfer; |
| 1708 | QUIT; |
| 1709 | } |
| 1710 | return len; |
| 1711 | } |
| 1712 | |
| 1713 | LONGEST |
| 1714 | target_read_until_error (struct target_ops *ops, |
| 1715 | enum target_object object, |
| 1716 | const char *annex, gdb_byte *buf, |
| 1717 | ULONGEST offset, LONGEST len) |
| 1718 | { |
| 1719 | LONGEST xfered = 0; |
| 1720 | while (xfered < len) |
| 1721 | { |
| 1722 | LONGEST xfer = target_read_partial (ops, object, annex, |
| 1723 | (gdb_byte *) buf + xfered, |
| 1724 | offset + xfered, len - xfered); |
| 1725 | /* Call an observer, notifying them of the xfer progress? */ |
| 1726 | if (xfer == 0) |
| 1727 | return xfered; |
| 1728 | if (xfer < 0) |
| 1729 | { |
| 1730 | /* We've got an error. Try to read in smaller blocks. */ |
| 1731 | ULONGEST start = offset + xfered; |
| 1732 | ULONGEST remaining = len - xfered; |
| 1733 | ULONGEST half; |
| 1734 | |
| 1735 | /* If an attempt was made to read a random memory address, |
| 1736 | it's likely that the very first byte is not accessible. |
| 1737 | Try reading the first byte, to avoid doing log N tries |
| 1738 | below. */ |
| 1739 | xfer = target_read_partial (ops, object, annex, |
| 1740 | (gdb_byte *) buf + xfered, start, 1); |
| 1741 | if (xfer <= 0) |
| 1742 | return xfered; |
| 1743 | start += 1; |
| 1744 | remaining -= 1; |
| 1745 | half = remaining/2; |
| 1746 | |
| 1747 | while (half > 0) |
| 1748 | { |
| 1749 | xfer = target_read_partial (ops, object, annex, |
| 1750 | (gdb_byte *) buf + xfered, |
| 1751 | start, half); |
| 1752 | if (xfer == 0) |
| 1753 | return xfered; |
| 1754 | if (xfer < 0) |
| 1755 | { |
| 1756 | remaining = half; |
| 1757 | } |
| 1758 | else |
| 1759 | { |
| 1760 | /* We have successfully read the first half. So, the |
| 1761 | error must be in the second half. Adjust start and |
| 1762 | remaining to point at the second half. */ |
| 1763 | xfered += xfer; |
| 1764 | start += xfer; |
| 1765 | remaining -= xfer; |
| 1766 | } |
| 1767 | half = remaining/2; |
| 1768 | } |
| 1769 | |
| 1770 | return xfered; |
| 1771 | } |
| 1772 | xfered += xfer; |
| 1773 | QUIT; |
| 1774 | } |
| 1775 | return len; |
| 1776 | } |
| 1777 | |
| 1778 | /* An alternative to target_write with progress callbacks. */ |
| 1779 | |
| 1780 | LONGEST |
| 1781 | target_write_with_progress (struct target_ops *ops, |
| 1782 | enum target_object object, |
| 1783 | const char *annex, const gdb_byte *buf, |
| 1784 | ULONGEST offset, LONGEST len, |
| 1785 | void (*progress) (ULONGEST, void *), void *baton) |
| 1786 | { |
| 1787 | LONGEST xfered = 0; |
| 1788 | |
| 1789 | /* Give the progress callback a chance to set up. */ |
| 1790 | if (progress) |
| 1791 | (*progress) (0, baton); |
| 1792 | |
| 1793 | while (xfered < len) |
| 1794 | { |
| 1795 | LONGEST xfer = target_write_partial (ops, object, annex, |
| 1796 | (gdb_byte *) buf + xfered, |
| 1797 | offset + xfered, len - xfered); |
| 1798 | |
| 1799 | if (xfer == 0) |
| 1800 | return xfered; |
| 1801 | if (xfer < 0) |
| 1802 | return -1; |
| 1803 | |
| 1804 | if (progress) |
| 1805 | (*progress) (xfer, baton); |
| 1806 | |
| 1807 | xfered += xfer; |
| 1808 | QUIT; |
| 1809 | } |
| 1810 | return len; |
| 1811 | } |
| 1812 | |
| 1813 | /* For docs on target_write see target.h. */ |
| 1814 | |
| 1815 | LONGEST |
| 1816 | target_write (struct target_ops *ops, |
| 1817 | enum target_object object, |
| 1818 | const char *annex, const gdb_byte *buf, |
| 1819 | ULONGEST offset, LONGEST len) |
| 1820 | { |
| 1821 | return target_write_with_progress (ops, object, annex, buf, offset, len, |
| 1822 | NULL, NULL); |
| 1823 | } |
| 1824 | |
| 1825 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
| 1826 | the size of the transferred data. PADDING additional bytes are |
| 1827 | available in *BUF_P. This is a helper function for |
| 1828 | target_read_alloc; see the declaration of that function for more |
| 1829 | information. */ |
| 1830 | |
| 1831 | static LONGEST |
| 1832 | target_read_alloc_1 (struct target_ops *ops, enum target_object object, |
| 1833 | const char *annex, gdb_byte **buf_p, int padding) |
| 1834 | { |
| 1835 | size_t buf_alloc, buf_pos; |
| 1836 | gdb_byte *buf; |
| 1837 | LONGEST n; |
| 1838 | |
| 1839 | /* This function does not have a length parameter; it reads the |
| 1840 | entire OBJECT). Also, it doesn't support objects fetched partly |
| 1841 | from one target and partly from another (in a different stratum, |
| 1842 | e.g. a core file and an executable). Both reasons make it |
| 1843 | unsuitable for reading memory. */ |
| 1844 | gdb_assert (object != TARGET_OBJECT_MEMORY); |
| 1845 | |
| 1846 | /* Start by reading up to 4K at a time. The target will throttle |
| 1847 | this number down if necessary. */ |
| 1848 | buf_alloc = 4096; |
| 1849 | buf = xmalloc (buf_alloc); |
| 1850 | buf_pos = 0; |
| 1851 | while (1) |
| 1852 | { |
| 1853 | n = target_read_partial (ops, object, annex, &buf[buf_pos], |
| 1854 | buf_pos, buf_alloc - buf_pos - padding); |
| 1855 | if (n < 0) |
| 1856 | { |
| 1857 | /* An error occurred. */ |
| 1858 | xfree (buf); |
| 1859 | return -1; |
| 1860 | } |
| 1861 | else if (n == 0) |
| 1862 | { |
| 1863 | /* Read all there was. */ |
| 1864 | if (buf_pos == 0) |
| 1865 | xfree (buf); |
| 1866 | else |
| 1867 | *buf_p = buf; |
| 1868 | return buf_pos; |
| 1869 | } |
| 1870 | |
| 1871 | buf_pos += n; |
| 1872 | |
| 1873 | /* If the buffer is filling up, expand it. */ |
| 1874 | if (buf_alloc < buf_pos * 2) |
| 1875 | { |
| 1876 | buf_alloc *= 2; |
| 1877 | buf = xrealloc (buf, buf_alloc); |
| 1878 | } |
| 1879 | |
| 1880 | QUIT; |
| 1881 | } |
| 1882 | } |
| 1883 | |
| 1884 | /* Read OBJECT/ANNEX using OPS. Store the result in *BUF_P and return |
| 1885 | the size of the transferred data. See the declaration in "target.h" |
| 1886 | function for more information about the return value. */ |
| 1887 | |
| 1888 | LONGEST |
| 1889 | target_read_alloc (struct target_ops *ops, enum target_object object, |
| 1890 | const char *annex, gdb_byte **buf_p) |
| 1891 | { |
| 1892 | return target_read_alloc_1 (ops, object, annex, buf_p, 0); |
| 1893 | } |
| 1894 | |
| 1895 | /* Read OBJECT/ANNEX using OPS. The result is NUL-terminated and |
| 1896 | returned as a string, allocated using xmalloc. If an error occurs |
| 1897 | or the transfer is unsupported, NULL is returned. Empty objects |
| 1898 | are returned as allocated but empty strings. A warning is issued |
| 1899 | if the result contains any embedded NUL bytes. */ |
| 1900 | |
| 1901 | char * |
| 1902 | target_read_stralloc (struct target_ops *ops, enum target_object object, |
| 1903 | const char *annex) |
| 1904 | { |
| 1905 | gdb_byte *buffer; |
| 1906 | LONGEST transferred; |
| 1907 | |
| 1908 | transferred = target_read_alloc_1 (ops, object, annex, &buffer, 1); |
| 1909 | |
| 1910 | if (transferred < 0) |
| 1911 | return NULL; |
| 1912 | |
| 1913 | if (transferred == 0) |
| 1914 | return xstrdup (""); |
| 1915 | |
| 1916 | buffer[transferred] = 0; |
| 1917 | if (strlen (buffer) < transferred) |
| 1918 | warning (_("target object %d, annex %s, " |
| 1919 | "contained unexpected null characters"), |
| 1920 | (int) object, annex ? annex : "(none)"); |
| 1921 | |
| 1922 | return (char *) buffer; |
| 1923 | } |
| 1924 | |
| 1925 | /* Memory transfer methods. */ |
| 1926 | |
| 1927 | void |
| 1928 | get_target_memory (struct target_ops *ops, CORE_ADDR addr, gdb_byte *buf, |
| 1929 | LONGEST len) |
| 1930 | { |
| 1931 | /* This method is used to read from an alternate, non-current |
| 1932 | target. This read must bypass the overlay support (as symbols |
| 1933 | don't match this target), and GDB's internal cache (wrong cache |
| 1934 | for this target). */ |
| 1935 | if (target_read (ops, TARGET_OBJECT_RAW_MEMORY, NULL, buf, addr, len) |
| 1936 | != len) |
| 1937 | memory_error (EIO, addr); |
| 1938 | } |
| 1939 | |
| 1940 | ULONGEST |
| 1941 | get_target_memory_unsigned (struct target_ops *ops, |
| 1942 | CORE_ADDR addr, int len, enum bfd_endian byte_order) |
| 1943 | { |
| 1944 | gdb_byte buf[sizeof (ULONGEST)]; |
| 1945 | |
| 1946 | gdb_assert (len <= sizeof (buf)); |
| 1947 | get_target_memory (ops, addr, buf, len); |
| 1948 | return extract_unsigned_integer (buf, len, byte_order); |
| 1949 | } |
| 1950 | |
| 1951 | static void |
| 1952 | target_info (char *args, int from_tty) |
| 1953 | { |
| 1954 | struct target_ops *t; |
| 1955 | int has_all_mem = 0; |
| 1956 | |
| 1957 | if (symfile_objfile != NULL) |
| 1958 | printf_unfiltered (_("Symbols from \"%s\".\n"), symfile_objfile->name); |
| 1959 | |
| 1960 | for (t = target_stack; t != NULL; t = t->beneath) |
| 1961 | { |
| 1962 | if (!(*t->to_has_memory) (t)) |
| 1963 | continue; |
| 1964 | |
| 1965 | if ((int) (t->to_stratum) <= (int) dummy_stratum) |
| 1966 | continue; |
| 1967 | if (has_all_mem) |
| 1968 | printf_unfiltered (_("\tWhile running this, GDB does not access memory from...\n")); |
| 1969 | printf_unfiltered ("%s:\n", t->to_longname); |
| 1970 | (t->to_files_info) (t); |
| 1971 | has_all_mem = (*t->to_has_all_memory) (t); |
| 1972 | } |
| 1973 | } |
| 1974 | |
| 1975 | /* This function is called before any new inferior is created, e.g. |
| 1976 | by running a program, attaching, or connecting to a target. |
| 1977 | It cleans up any state from previous invocations which might |
| 1978 | change between runs. This is a subset of what target_preopen |
| 1979 | resets (things which might change between targets). */ |
| 1980 | |
| 1981 | void |
| 1982 | target_pre_inferior (int from_tty) |
| 1983 | { |
| 1984 | /* Clear out solib state. Otherwise the solib state of the previous |
| 1985 | inferior might have survived and is entirely wrong for the new |
| 1986 | target. This has been observed on GNU/Linux using glibc 2.3. How |
| 1987 | to reproduce: |
| 1988 | |
| 1989 | bash$ ./foo& |
| 1990 | [1] 4711 |
| 1991 | bash$ ./foo& |
| 1992 | [1] 4712 |
| 1993 | bash$ gdb ./foo |
| 1994 | [...] |
| 1995 | (gdb) attach 4711 |
| 1996 | (gdb) detach |
| 1997 | (gdb) attach 4712 |
| 1998 | Cannot access memory at address 0xdeadbeef |
| 1999 | */ |
| 2000 | |
| 2001 | /* In some OSs, the shared library list is the same/global/shared |
| 2002 | across inferiors. If code is shared between processes, so are |
| 2003 | memory regions and features. */ |
| 2004 | if (!gdbarch_has_global_solist (target_gdbarch)) |
| 2005 | { |
| 2006 | no_shared_libraries (NULL, from_tty); |
| 2007 | |
| 2008 | invalidate_target_mem_regions (); |
| 2009 | |
| 2010 | target_clear_description (); |
| 2011 | } |
| 2012 | } |
| 2013 | |
| 2014 | /* Callback for iterate_over_inferiors. Gets rid of the given |
| 2015 | inferior. */ |
| 2016 | |
| 2017 | static int |
| 2018 | dispose_inferior (struct inferior *inf, void *args) |
| 2019 | { |
| 2020 | struct thread_info *thread; |
| 2021 | |
| 2022 | thread = any_thread_of_process (inf->pid); |
| 2023 | if (thread) |
| 2024 | { |
| 2025 | switch_to_thread (thread->ptid); |
| 2026 | |
| 2027 | /* Core inferiors actually should be detached, not killed. */ |
| 2028 | if (target_has_execution) |
| 2029 | target_kill (); |
| 2030 | else |
| 2031 | target_detach (NULL, 0); |
| 2032 | } |
| 2033 | |
| 2034 | return 0; |
| 2035 | } |
| 2036 | |
| 2037 | /* This is to be called by the open routine before it does |
| 2038 | anything. */ |
| 2039 | |
| 2040 | void |
| 2041 | target_preopen (int from_tty) |
| 2042 | { |
| 2043 | dont_repeat (); |
| 2044 | |
| 2045 | if (have_inferiors ()) |
| 2046 | { |
| 2047 | if (!from_tty |
| 2048 | || !have_live_inferiors () |
| 2049 | || query (_("A program is being debugged already. Kill it? "))) |
| 2050 | iterate_over_inferiors (dispose_inferior, NULL); |
| 2051 | else |
| 2052 | error (_("Program not killed.")); |
| 2053 | } |
| 2054 | |
| 2055 | /* Calling target_kill may remove the target from the stack. But if |
| 2056 | it doesn't (which seems like a win for UDI), remove it now. */ |
| 2057 | /* Leave the exec target, though. The user may be switching from a |
| 2058 | live process to a core of the same program. */ |
| 2059 | pop_all_targets_above (file_stratum, 0); |
| 2060 | |
| 2061 | target_pre_inferior (from_tty); |
| 2062 | } |
| 2063 | |
| 2064 | /* Detach a target after doing deferred register stores. */ |
| 2065 | |
| 2066 | void |
| 2067 | target_detach (char *args, int from_tty) |
| 2068 | { |
| 2069 | struct target_ops* t; |
| 2070 | |
| 2071 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
| 2072 | /* Don't remove global breakpoints here. They're removed on |
| 2073 | disconnection from the target. */ |
| 2074 | ; |
| 2075 | else |
| 2076 | /* If we're in breakpoints-always-inserted mode, have to remove |
| 2077 | them before detaching. */ |
| 2078 | remove_breakpoints_pid (PIDGET (inferior_ptid)); |
| 2079 | |
| 2080 | prepare_for_detach (); |
| 2081 | |
| 2082 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2083 | { |
| 2084 | if (t->to_detach != NULL) |
| 2085 | { |
| 2086 | t->to_detach (t, args, from_tty); |
| 2087 | if (targetdebug) |
| 2088 | fprintf_unfiltered (gdb_stdlog, "target_detach (%s, %d)\n", |
| 2089 | args, from_tty); |
| 2090 | return; |
| 2091 | } |
| 2092 | } |
| 2093 | |
| 2094 | internal_error (__FILE__, __LINE__, "could not find a target to detach"); |
| 2095 | } |
| 2096 | |
| 2097 | void |
| 2098 | target_disconnect (char *args, int from_tty) |
| 2099 | { |
| 2100 | struct target_ops *t; |
| 2101 | |
| 2102 | /* If we're in breakpoints-always-inserted mode or if breakpoints |
| 2103 | are global across processes, we have to remove them before |
| 2104 | disconnecting. */ |
| 2105 | remove_breakpoints (); |
| 2106 | |
| 2107 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2108 | if (t->to_disconnect != NULL) |
| 2109 | { |
| 2110 | if (targetdebug) |
| 2111 | fprintf_unfiltered (gdb_stdlog, "target_disconnect (%s, %d)\n", |
| 2112 | args, from_tty); |
| 2113 | t->to_disconnect (t, args, from_tty); |
| 2114 | return; |
| 2115 | } |
| 2116 | |
| 2117 | tcomplain (); |
| 2118 | } |
| 2119 | |
| 2120 | ptid_t |
| 2121 | target_wait (ptid_t ptid, struct target_waitstatus *status, int options) |
| 2122 | { |
| 2123 | struct target_ops *t; |
| 2124 | |
| 2125 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2126 | { |
| 2127 | if (t->to_wait != NULL) |
| 2128 | { |
| 2129 | ptid_t retval = (*t->to_wait) (t, ptid, status, options); |
| 2130 | |
| 2131 | if (targetdebug) |
| 2132 | { |
| 2133 | char *status_string; |
| 2134 | |
| 2135 | status_string = target_waitstatus_to_string (status); |
| 2136 | fprintf_unfiltered (gdb_stdlog, |
| 2137 | "target_wait (%d, status) = %d, %s\n", |
| 2138 | PIDGET (ptid), PIDGET (retval), |
| 2139 | status_string); |
| 2140 | xfree (status_string); |
| 2141 | } |
| 2142 | |
| 2143 | return retval; |
| 2144 | } |
| 2145 | } |
| 2146 | |
| 2147 | noprocess (); |
| 2148 | } |
| 2149 | |
| 2150 | char * |
| 2151 | target_pid_to_str (ptid_t ptid) |
| 2152 | { |
| 2153 | struct target_ops *t; |
| 2154 | |
| 2155 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2156 | { |
| 2157 | if (t->to_pid_to_str != NULL) |
| 2158 | return (*t->to_pid_to_str) (t, ptid); |
| 2159 | } |
| 2160 | |
| 2161 | return normal_pid_to_str (ptid); |
| 2162 | } |
| 2163 | |
| 2164 | void |
| 2165 | target_resume (ptid_t ptid, int step, enum target_signal signal) |
| 2166 | { |
| 2167 | struct target_ops *t; |
| 2168 | |
| 2169 | target_dcache_invalidate (); |
| 2170 | |
| 2171 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2172 | { |
| 2173 | if (t->to_resume != NULL) |
| 2174 | { |
| 2175 | t->to_resume (t, ptid, step, signal); |
| 2176 | if (targetdebug) |
| 2177 | fprintf_unfiltered (gdb_stdlog, "target_resume (%d, %s, %s)\n", |
| 2178 | PIDGET (ptid), |
| 2179 | step ? "step" : "continue", |
| 2180 | target_signal_to_name (signal)); |
| 2181 | |
| 2182 | set_executing (ptid, 1); |
| 2183 | set_running (ptid, 1); |
| 2184 | clear_inline_frame_state (ptid); |
| 2185 | return; |
| 2186 | } |
| 2187 | } |
| 2188 | |
| 2189 | noprocess (); |
| 2190 | } |
| 2191 | /* Look through the list of possible targets for a target that can |
| 2192 | follow forks. */ |
| 2193 | |
| 2194 | int |
| 2195 | target_follow_fork (int follow_child) |
| 2196 | { |
| 2197 | struct target_ops *t; |
| 2198 | |
| 2199 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2200 | { |
| 2201 | if (t->to_follow_fork != NULL) |
| 2202 | { |
| 2203 | int retval = t->to_follow_fork (t, follow_child); |
| 2204 | if (targetdebug) |
| 2205 | fprintf_unfiltered (gdb_stdlog, "target_follow_fork (%d) = %d\n", |
| 2206 | follow_child, retval); |
| 2207 | return retval; |
| 2208 | } |
| 2209 | } |
| 2210 | |
| 2211 | /* Some target returned a fork event, but did not know how to follow it. */ |
| 2212 | internal_error (__FILE__, __LINE__, |
| 2213 | "could not find a target to follow fork"); |
| 2214 | } |
| 2215 | |
| 2216 | void |
| 2217 | target_mourn_inferior (void) |
| 2218 | { |
| 2219 | struct target_ops *t; |
| 2220 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2221 | { |
| 2222 | if (t->to_mourn_inferior != NULL) |
| 2223 | { |
| 2224 | t->to_mourn_inferior (t); |
| 2225 | if (targetdebug) |
| 2226 | fprintf_unfiltered (gdb_stdlog, "target_mourn_inferior ()\n"); |
| 2227 | |
| 2228 | /* We no longer need to keep handles on any of the object files. |
| 2229 | Make sure to release them to avoid unnecessarily locking any |
| 2230 | of them while we're not actually debugging. */ |
| 2231 | bfd_cache_close_all (); |
| 2232 | |
| 2233 | return; |
| 2234 | } |
| 2235 | } |
| 2236 | |
| 2237 | internal_error (__FILE__, __LINE__, |
| 2238 | "could not find a target to follow mourn inferiour"); |
| 2239 | } |
| 2240 | |
| 2241 | /* Look for a target which can describe architectural features, starting |
| 2242 | from TARGET. If we find one, return its description. */ |
| 2243 | |
| 2244 | const struct target_desc * |
| 2245 | target_read_description (struct target_ops *target) |
| 2246 | { |
| 2247 | struct target_ops *t; |
| 2248 | |
| 2249 | for (t = target; t != NULL; t = t->beneath) |
| 2250 | if (t->to_read_description != NULL) |
| 2251 | { |
| 2252 | const struct target_desc *tdesc; |
| 2253 | |
| 2254 | tdesc = t->to_read_description (t); |
| 2255 | if (tdesc) |
| 2256 | return tdesc; |
| 2257 | } |
| 2258 | |
| 2259 | return NULL; |
| 2260 | } |
| 2261 | |
| 2262 | /* The default implementation of to_search_memory. |
| 2263 | This implements a basic search of memory, reading target memory and |
| 2264 | performing the search here (as opposed to performing the search in on the |
| 2265 | target side with, for example, gdbserver). */ |
| 2266 | |
| 2267 | int |
| 2268 | simple_search_memory (struct target_ops *ops, |
| 2269 | CORE_ADDR start_addr, ULONGEST search_space_len, |
| 2270 | const gdb_byte *pattern, ULONGEST pattern_len, |
| 2271 | CORE_ADDR *found_addrp) |
| 2272 | { |
| 2273 | /* NOTE: also defined in find.c testcase. */ |
| 2274 | #define SEARCH_CHUNK_SIZE 16000 |
| 2275 | const unsigned chunk_size = SEARCH_CHUNK_SIZE; |
| 2276 | /* Buffer to hold memory contents for searching. */ |
| 2277 | gdb_byte *search_buf; |
| 2278 | unsigned search_buf_size; |
| 2279 | struct cleanup *old_cleanups; |
| 2280 | |
| 2281 | search_buf_size = chunk_size + pattern_len - 1; |
| 2282 | |
| 2283 | /* No point in trying to allocate a buffer larger than the search space. */ |
| 2284 | if (search_space_len < search_buf_size) |
| 2285 | search_buf_size = search_space_len; |
| 2286 | |
| 2287 | search_buf = malloc (search_buf_size); |
| 2288 | if (search_buf == NULL) |
| 2289 | error (_("Unable to allocate memory to perform the search.")); |
| 2290 | old_cleanups = make_cleanup (free_current_contents, &search_buf); |
| 2291 | |
| 2292 | /* Prime the search buffer. */ |
| 2293 | |
| 2294 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, |
| 2295 | search_buf, start_addr, search_buf_size) != search_buf_size) |
| 2296 | { |
| 2297 | warning (_("Unable to access target memory at %s, halting search."), |
| 2298 | hex_string (start_addr)); |
| 2299 | do_cleanups (old_cleanups); |
| 2300 | return -1; |
| 2301 | } |
| 2302 | |
| 2303 | /* Perform the search. |
| 2304 | |
| 2305 | The loop is kept simple by allocating [N + pattern-length - 1] bytes. |
| 2306 | When we've scanned N bytes we copy the trailing bytes to the start and |
| 2307 | read in another N bytes. */ |
| 2308 | |
| 2309 | while (search_space_len >= pattern_len) |
| 2310 | { |
| 2311 | gdb_byte *found_ptr; |
| 2312 | unsigned nr_search_bytes = min (search_space_len, search_buf_size); |
| 2313 | |
| 2314 | found_ptr = memmem (search_buf, nr_search_bytes, |
| 2315 | pattern, pattern_len); |
| 2316 | |
| 2317 | if (found_ptr != NULL) |
| 2318 | { |
| 2319 | CORE_ADDR found_addr = start_addr + (found_ptr - search_buf); |
| 2320 | *found_addrp = found_addr; |
| 2321 | do_cleanups (old_cleanups); |
| 2322 | return 1; |
| 2323 | } |
| 2324 | |
| 2325 | /* Not found in this chunk, skip to next chunk. */ |
| 2326 | |
| 2327 | /* Don't let search_space_len wrap here, it's unsigned. */ |
| 2328 | if (search_space_len >= chunk_size) |
| 2329 | search_space_len -= chunk_size; |
| 2330 | else |
| 2331 | search_space_len = 0; |
| 2332 | |
| 2333 | if (search_space_len >= pattern_len) |
| 2334 | { |
| 2335 | unsigned keep_len = search_buf_size - chunk_size; |
| 2336 | CORE_ADDR read_addr = start_addr + chunk_size + keep_len; |
| 2337 | int nr_to_read; |
| 2338 | |
| 2339 | /* Copy the trailing part of the previous iteration to the front |
| 2340 | of the buffer for the next iteration. */ |
| 2341 | gdb_assert (keep_len == pattern_len - 1); |
| 2342 | memcpy (search_buf, search_buf + chunk_size, keep_len); |
| 2343 | |
| 2344 | nr_to_read = min (search_space_len - keep_len, chunk_size); |
| 2345 | |
| 2346 | if (target_read (ops, TARGET_OBJECT_MEMORY, NULL, |
| 2347 | search_buf + keep_len, read_addr, |
| 2348 | nr_to_read) != nr_to_read) |
| 2349 | { |
| 2350 | warning (_("Unable to access target memory at %s, halting search."), |
| 2351 | hex_string (read_addr)); |
| 2352 | do_cleanups (old_cleanups); |
| 2353 | return -1; |
| 2354 | } |
| 2355 | |
| 2356 | start_addr += chunk_size; |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | /* Not found. */ |
| 2361 | |
| 2362 | do_cleanups (old_cleanups); |
| 2363 | return 0; |
| 2364 | } |
| 2365 | |
| 2366 | /* Search SEARCH_SPACE_LEN bytes beginning at START_ADDR for the |
| 2367 | sequence of bytes in PATTERN with length PATTERN_LEN. |
| 2368 | |
| 2369 | The result is 1 if found, 0 if not found, and -1 if there was an error |
| 2370 | requiring halting of the search (e.g. memory read error). |
| 2371 | If the pattern is found the address is recorded in FOUND_ADDRP. */ |
| 2372 | |
| 2373 | int |
| 2374 | target_search_memory (CORE_ADDR start_addr, ULONGEST search_space_len, |
| 2375 | const gdb_byte *pattern, ULONGEST pattern_len, |
| 2376 | CORE_ADDR *found_addrp) |
| 2377 | { |
| 2378 | struct target_ops *t; |
| 2379 | int found; |
| 2380 | |
| 2381 | /* We don't use INHERIT to set current_target.to_search_memory, |
| 2382 | so we have to scan the target stack and handle targetdebug |
| 2383 | ourselves. */ |
| 2384 | |
| 2385 | if (targetdebug) |
| 2386 | fprintf_unfiltered (gdb_stdlog, "target_search_memory (%s, ...)\n", |
| 2387 | hex_string (start_addr)); |
| 2388 | |
| 2389 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2390 | if (t->to_search_memory != NULL) |
| 2391 | break; |
| 2392 | |
| 2393 | if (t != NULL) |
| 2394 | { |
| 2395 | found = t->to_search_memory (t, start_addr, search_space_len, |
| 2396 | pattern, pattern_len, found_addrp); |
| 2397 | } |
| 2398 | else |
| 2399 | { |
| 2400 | /* If a special version of to_search_memory isn't available, use the |
| 2401 | simple version. */ |
| 2402 | found = simple_search_memory (current_target.beneath, |
| 2403 | start_addr, search_space_len, |
| 2404 | pattern, pattern_len, found_addrp); |
| 2405 | } |
| 2406 | |
| 2407 | if (targetdebug) |
| 2408 | fprintf_unfiltered (gdb_stdlog, " = %d\n", found); |
| 2409 | |
| 2410 | return found; |
| 2411 | } |
| 2412 | |
| 2413 | /* Look through the currently pushed targets. If none of them will |
| 2414 | be able to restart the currently running process, issue an error |
| 2415 | message. */ |
| 2416 | |
| 2417 | void |
| 2418 | target_require_runnable (void) |
| 2419 | { |
| 2420 | struct target_ops *t; |
| 2421 | |
| 2422 | for (t = target_stack; t != NULL; t = t->beneath) |
| 2423 | { |
| 2424 | /* If this target knows how to create a new program, then |
| 2425 | assume we will still be able to after killing the current |
| 2426 | one. Either killing and mourning will not pop T, or else |
| 2427 | find_default_run_target will find it again. */ |
| 2428 | if (t->to_create_inferior != NULL) |
| 2429 | return; |
| 2430 | |
| 2431 | /* Do not worry about thread_stratum targets that can not |
| 2432 | create inferiors. Assume they will be pushed again if |
| 2433 | necessary, and continue to the process_stratum. */ |
| 2434 | if (t->to_stratum == thread_stratum |
| 2435 | || t->to_stratum == arch_stratum) |
| 2436 | continue; |
| 2437 | |
| 2438 | error (_("\ |
| 2439 | The \"%s\" target does not support \"run\". Try \"help target\" or \"continue\"."), |
| 2440 | t->to_shortname); |
| 2441 | } |
| 2442 | |
| 2443 | /* This function is only called if the target is running. In that |
| 2444 | case there should have been a process_stratum target and it |
| 2445 | should either know how to create inferiors, or not... */ |
| 2446 | internal_error (__FILE__, __LINE__, "No targets found"); |
| 2447 | } |
| 2448 | |
| 2449 | /* Look through the list of possible targets for a target that can |
| 2450 | execute a run or attach command without any other data. This is |
| 2451 | used to locate the default process stratum. |
| 2452 | |
| 2453 | If DO_MESG is not NULL, the result is always valid (error() is |
| 2454 | called for errors); else, return NULL on error. */ |
| 2455 | |
| 2456 | static struct target_ops * |
| 2457 | find_default_run_target (char *do_mesg) |
| 2458 | { |
| 2459 | struct target_ops **t; |
| 2460 | struct target_ops *runable = NULL; |
| 2461 | int count; |
| 2462 | |
| 2463 | count = 0; |
| 2464 | |
| 2465 | for (t = target_structs; t < target_structs + target_struct_size; |
| 2466 | ++t) |
| 2467 | { |
| 2468 | if ((*t)->to_can_run && target_can_run (*t)) |
| 2469 | { |
| 2470 | runable = *t; |
| 2471 | ++count; |
| 2472 | } |
| 2473 | } |
| 2474 | |
| 2475 | if (count != 1) |
| 2476 | { |
| 2477 | if (do_mesg) |
| 2478 | error (_("Don't know how to %s. Try \"help target\"."), do_mesg); |
| 2479 | else |
| 2480 | return NULL; |
| 2481 | } |
| 2482 | |
| 2483 | return runable; |
| 2484 | } |
| 2485 | |
| 2486 | void |
| 2487 | find_default_attach (struct target_ops *ops, char *args, int from_tty) |
| 2488 | { |
| 2489 | struct target_ops *t; |
| 2490 | |
| 2491 | t = find_default_run_target ("attach"); |
| 2492 | (t->to_attach) (t, args, from_tty); |
| 2493 | return; |
| 2494 | } |
| 2495 | |
| 2496 | void |
| 2497 | find_default_create_inferior (struct target_ops *ops, |
| 2498 | char *exec_file, char *allargs, char **env, |
| 2499 | int from_tty) |
| 2500 | { |
| 2501 | struct target_ops *t; |
| 2502 | |
| 2503 | t = find_default_run_target ("run"); |
| 2504 | (t->to_create_inferior) (t, exec_file, allargs, env, from_tty); |
| 2505 | return; |
| 2506 | } |
| 2507 | |
| 2508 | static int |
| 2509 | find_default_can_async_p (void) |
| 2510 | { |
| 2511 | struct target_ops *t; |
| 2512 | |
| 2513 | /* This may be called before the target is pushed on the stack; |
| 2514 | look for the default process stratum. If there's none, gdb isn't |
| 2515 | configured with a native debugger, and target remote isn't |
| 2516 | connected yet. */ |
| 2517 | t = find_default_run_target (NULL); |
| 2518 | if (t && t->to_can_async_p) |
| 2519 | return (t->to_can_async_p) (); |
| 2520 | return 0; |
| 2521 | } |
| 2522 | |
| 2523 | static int |
| 2524 | find_default_is_async_p (void) |
| 2525 | { |
| 2526 | struct target_ops *t; |
| 2527 | |
| 2528 | /* This may be called before the target is pushed on the stack; |
| 2529 | look for the default process stratum. If there's none, gdb isn't |
| 2530 | configured with a native debugger, and target remote isn't |
| 2531 | connected yet. */ |
| 2532 | t = find_default_run_target (NULL); |
| 2533 | if (t && t->to_is_async_p) |
| 2534 | return (t->to_is_async_p) (); |
| 2535 | return 0; |
| 2536 | } |
| 2537 | |
| 2538 | static int |
| 2539 | find_default_supports_non_stop (void) |
| 2540 | { |
| 2541 | struct target_ops *t; |
| 2542 | |
| 2543 | t = find_default_run_target (NULL); |
| 2544 | if (t && t->to_supports_non_stop) |
| 2545 | return (t->to_supports_non_stop) (); |
| 2546 | return 0; |
| 2547 | } |
| 2548 | |
| 2549 | int |
| 2550 | target_supports_non_stop (void) |
| 2551 | { |
| 2552 | struct target_ops *t; |
| 2553 | for (t = ¤t_target; t != NULL; t = t->beneath) |
| 2554 | if (t->to_supports_non_stop) |
| 2555 | return t->to_supports_non_stop (); |
| 2556 | |
| 2557 | return 0; |
| 2558 | } |
| 2559 | |
| 2560 | |
| 2561 | char * |
| 2562 | target_get_osdata (const char *type) |
| 2563 | { |
| 2564 | char *document; |
| 2565 | struct target_ops *t; |
| 2566 | |
| 2567 | /* If we're already connected to something that can get us OS |
| 2568 | related data, use it. Otherwise, try using the native |
| 2569 | target. */ |
| 2570 | if (current_target.to_stratum >= process_stratum) |
| 2571 | t = current_target.beneath; |
| 2572 | else |
| 2573 | t = find_default_run_target ("get OS data"); |
| 2574 | |
| 2575 | if (!t) |
| 2576 | return NULL; |
| 2577 | |
| 2578 | return target_read_stralloc (t, TARGET_OBJECT_OSDATA, type); |
| 2579 | } |
| 2580 | |
| 2581 | /* Determine the current address space of thread PTID. */ |
| 2582 | |
| 2583 | struct address_space * |
| 2584 | target_thread_address_space (ptid_t ptid) |
| 2585 | { |
| 2586 | struct address_space *aspace; |
| 2587 | struct inferior *inf; |
| 2588 | struct target_ops *t; |
| 2589 | |
| 2590 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2591 | { |
| 2592 | if (t->to_thread_address_space != NULL) |
| 2593 | { |
| 2594 | aspace = t->to_thread_address_space (t, ptid); |
| 2595 | gdb_assert (aspace); |
| 2596 | |
| 2597 | if (targetdebug) |
| 2598 | fprintf_unfiltered (gdb_stdlog, |
| 2599 | "target_thread_address_space (%s) = %d\n", |
| 2600 | target_pid_to_str (ptid), |
| 2601 | address_space_num (aspace)); |
| 2602 | return aspace; |
| 2603 | } |
| 2604 | } |
| 2605 | |
| 2606 | /* Fall-back to the "main" address space of the inferior. */ |
| 2607 | inf = find_inferior_pid (ptid_get_pid (ptid)); |
| 2608 | |
| 2609 | if (inf == NULL || inf->aspace == NULL) |
| 2610 | internal_error (__FILE__, __LINE__, "\ |
| 2611 | Can't determine the current address space of thread %s\n", |
| 2612 | target_pid_to_str (ptid)); |
| 2613 | |
| 2614 | return inf->aspace; |
| 2615 | } |
| 2616 | |
| 2617 | static int |
| 2618 | default_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) |
| 2619 | { |
| 2620 | return (len <= gdbarch_ptr_bit (target_gdbarch) / TARGET_CHAR_BIT); |
| 2621 | } |
| 2622 | |
| 2623 | static int |
| 2624 | default_watchpoint_addr_within_range (struct target_ops *target, |
| 2625 | CORE_ADDR addr, |
| 2626 | CORE_ADDR start, int length) |
| 2627 | { |
| 2628 | return addr >= start && addr < start + length; |
| 2629 | } |
| 2630 | |
| 2631 | static struct gdbarch * |
| 2632 | default_thread_architecture (struct target_ops *ops, ptid_t ptid) |
| 2633 | { |
| 2634 | return target_gdbarch; |
| 2635 | } |
| 2636 | |
| 2637 | static int |
| 2638 | return_zero (void) |
| 2639 | { |
| 2640 | return 0; |
| 2641 | } |
| 2642 | |
| 2643 | static int |
| 2644 | return_one (void) |
| 2645 | { |
| 2646 | return 1; |
| 2647 | } |
| 2648 | |
| 2649 | static int |
| 2650 | return_minus_one (void) |
| 2651 | { |
| 2652 | return -1; |
| 2653 | } |
| 2654 | |
| 2655 | /* Find a single runnable target in the stack and return it. If for |
| 2656 | some reason there is more than one, return NULL. */ |
| 2657 | |
| 2658 | struct target_ops * |
| 2659 | find_run_target (void) |
| 2660 | { |
| 2661 | struct target_ops **t; |
| 2662 | struct target_ops *runable = NULL; |
| 2663 | int count; |
| 2664 | |
| 2665 | count = 0; |
| 2666 | |
| 2667 | for (t = target_structs; t < target_structs + target_struct_size; ++t) |
| 2668 | { |
| 2669 | if ((*t)->to_can_run && target_can_run (*t)) |
| 2670 | { |
| 2671 | runable = *t; |
| 2672 | ++count; |
| 2673 | } |
| 2674 | } |
| 2675 | |
| 2676 | return (count == 1 ? runable : NULL); |
| 2677 | } |
| 2678 | |
| 2679 | /* Find a single core_stratum target in the list of targets and return it. |
| 2680 | If for some reason there is more than one, return NULL. */ |
| 2681 | |
| 2682 | struct target_ops * |
| 2683 | find_core_target (void) |
| 2684 | { |
| 2685 | struct target_ops **t; |
| 2686 | struct target_ops *runable = NULL; |
| 2687 | int count; |
| 2688 | |
| 2689 | count = 0; |
| 2690 | |
| 2691 | for (t = target_structs; t < target_structs + target_struct_size; |
| 2692 | ++t) |
| 2693 | { |
| 2694 | if ((*t)->to_stratum == core_stratum) |
| 2695 | { |
| 2696 | runable = *t; |
| 2697 | ++count; |
| 2698 | } |
| 2699 | } |
| 2700 | |
| 2701 | return (count == 1 ? runable : NULL); |
| 2702 | } |
| 2703 | |
| 2704 | /* |
| 2705 | * Find the next target down the stack from the specified target. |
| 2706 | */ |
| 2707 | |
| 2708 | struct target_ops * |
| 2709 | find_target_beneath (struct target_ops *t) |
| 2710 | { |
| 2711 | return t->beneath; |
| 2712 | } |
| 2713 | |
| 2714 | \f |
| 2715 | /* The inferior process has died. Long live the inferior! */ |
| 2716 | |
| 2717 | void |
| 2718 | generic_mourn_inferior (void) |
| 2719 | { |
| 2720 | ptid_t ptid; |
| 2721 | |
| 2722 | ptid = inferior_ptid; |
| 2723 | inferior_ptid = null_ptid; |
| 2724 | |
| 2725 | if (!ptid_equal (ptid, null_ptid)) |
| 2726 | { |
| 2727 | int pid = ptid_get_pid (ptid); |
| 2728 | exit_inferior (pid); |
| 2729 | } |
| 2730 | |
| 2731 | breakpoint_init_inferior (inf_exited); |
| 2732 | registers_changed (); |
| 2733 | |
| 2734 | reopen_exec_file (); |
| 2735 | reinit_frame_cache (); |
| 2736 | |
| 2737 | if (deprecated_detach_hook) |
| 2738 | deprecated_detach_hook (); |
| 2739 | } |
| 2740 | \f |
| 2741 | /* Helper function for child_wait and the derivatives of child_wait. |
| 2742 | HOSTSTATUS is the waitstatus from wait() or the equivalent; store our |
| 2743 | translation of that in OURSTATUS. */ |
| 2744 | void |
| 2745 | store_waitstatus (struct target_waitstatus *ourstatus, int hoststatus) |
| 2746 | { |
| 2747 | if (WIFEXITED (hoststatus)) |
| 2748 | { |
| 2749 | ourstatus->kind = TARGET_WAITKIND_EXITED; |
| 2750 | ourstatus->value.integer = WEXITSTATUS (hoststatus); |
| 2751 | } |
| 2752 | else if (!WIFSTOPPED (hoststatus)) |
| 2753 | { |
| 2754 | ourstatus->kind = TARGET_WAITKIND_SIGNALLED; |
| 2755 | ourstatus->value.sig = target_signal_from_host (WTERMSIG (hoststatus)); |
| 2756 | } |
| 2757 | else |
| 2758 | { |
| 2759 | ourstatus->kind = TARGET_WAITKIND_STOPPED; |
| 2760 | ourstatus->value.sig = target_signal_from_host (WSTOPSIG (hoststatus)); |
| 2761 | } |
| 2762 | } |
| 2763 | \f |
| 2764 | /* Convert a normal process ID to a string. Returns the string in a |
| 2765 | static buffer. */ |
| 2766 | |
| 2767 | char * |
| 2768 | normal_pid_to_str (ptid_t ptid) |
| 2769 | { |
| 2770 | static char buf[32]; |
| 2771 | |
| 2772 | xsnprintf (buf, sizeof buf, "process %d", ptid_get_pid (ptid)); |
| 2773 | return buf; |
| 2774 | } |
| 2775 | |
| 2776 | static char * |
| 2777 | dummy_pid_to_str (struct target_ops *ops, ptid_t ptid) |
| 2778 | { |
| 2779 | return normal_pid_to_str (ptid); |
| 2780 | } |
| 2781 | |
| 2782 | /* Error-catcher for target_find_memory_regions. */ |
| 2783 | static int |
| 2784 | dummy_find_memory_regions (int (*ignore1) (), void *ignore2) |
| 2785 | { |
| 2786 | error (_("Command not implemented for this target.")); |
| 2787 | return 0; |
| 2788 | } |
| 2789 | |
| 2790 | /* Error-catcher for target_make_corefile_notes. */ |
| 2791 | static char * |
| 2792 | dummy_make_corefile_notes (bfd *ignore1, int *ignore2) |
| 2793 | { |
| 2794 | error (_("Command not implemented for this target.")); |
| 2795 | return NULL; |
| 2796 | } |
| 2797 | |
| 2798 | /* Error-catcher for target_get_bookmark. */ |
| 2799 | static gdb_byte * |
| 2800 | dummy_get_bookmark (char *ignore1, int ignore2) |
| 2801 | { |
| 2802 | tcomplain (); |
| 2803 | return NULL; |
| 2804 | } |
| 2805 | |
| 2806 | /* Error-catcher for target_goto_bookmark. */ |
| 2807 | static void |
| 2808 | dummy_goto_bookmark (gdb_byte *ignore, int from_tty) |
| 2809 | { |
| 2810 | tcomplain (); |
| 2811 | } |
| 2812 | |
| 2813 | /* Set up the handful of non-empty slots needed by the dummy target |
| 2814 | vector. */ |
| 2815 | |
| 2816 | static void |
| 2817 | init_dummy_target (void) |
| 2818 | { |
| 2819 | dummy_target.to_shortname = "None"; |
| 2820 | dummy_target.to_longname = "None"; |
| 2821 | dummy_target.to_doc = ""; |
| 2822 | dummy_target.to_attach = find_default_attach; |
| 2823 | dummy_target.to_detach = |
| 2824 | (void (*)(struct target_ops *, char *, int))target_ignore; |
| 2825 | dummy_target.to_create_inferior = find_default_create_inferior; |
| 2826 | dummy_target.to_can_async_p = find_default_can_async_p; |
| 2827 | dummy_target.to_is_async_p = find_default_is_async_p; |
| 2828 | dummy_target.to_supports_non_stop = find_default_supports_non_stop; |
| 2829 | dummy_target.to_pid_to_str = dummy_pid_to_str; |
| 2830 | dummy_target.to_stratum = dummy_stratum; |
| 2831 | dummy_target.to_find_memory_regions = dummy_find_memory_regions; |
| 2832 | dummy_target.to_make_corefile_notes = dummy_make_corefile_notes; |
| 2833 | dummy_target.to_get_bookmark = dummy_get_bookmark; |
| 2834 | dummy_target.to_goto_bookmark = dummy_goto_bookmark; |
| 2835 | dummy_target.to_xfer_partial = default_xfer_partial; |
| 2836 | dummy_target.to_has_all_memory = (int (*) (struct target_ops *)) return_zero; |
| 2837 | dummy_target.to_has_memory = (int (*) (struct target_ops *)) return_zero; |
| 2838 | dummy_target.to_has_stack = (int (*) (struct target_ops *)) return_zero; |
| 2839 | dummy_target.to_has_registers = (int (*) (struct target_ops *)) return_zero; |
| 2840 | dummy_target.to_has_execution = (int (*) (struct target_ops *)) return_zero; |
| 2841 | dummy_target.to_stopped_by_watchpoint = return_zero; |
| 2842 | dummy_target.to_stopped_data_address = |
| 2843 | (int (*) (struct target_ops *, CORE_ADDR *)) return_zero; |
| 2844 | dummy_target.to_magic = OPS_MAGIC; |
| 2845 | } |
| 2846 | \f |
| 2847 | static void |
| 2848 | debug_to_open (char *args, int from_tty) |
| 2849 | { |
| 2850 | debug_target.to_open (args, from_tty); |
| 2851 | |
| 2852 | fprintf_unfiltered (gdb_stdlog, "target_open (%s, %d)\n", args, from_tty); |
| 2853 | } |
| 2854 | |
| 2855 | void |
| 2856 | target_close (struct target_ops *targ, int quitting) |
| 2857 | { |
| 2858 | if (targ->to_xclose != NULL) |
| 2859 | targ->to_xclose (targ, quitting); |
| 2860 | else if (targ->to_close != NULL) |
| 2861 | targ->to_close (quitting); |
| 2862 | |
| 2863 | if (targetdebug) |
| 2864 | fprintf_unfiltered (gdb_stdlog, "target_close (%d)\n", quitting); |
| 2865 | } |
| 2866 | |
| 2867 | void |
| 2868 | target_attach (char *args, int from_tty) |
| 2869 | { |
| 2870 | struct target_ops *t; |
| 2871 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2872 | { |
| 2873 | if (t->to_attach != NULL) |
| 2874 | { |
| 2875 | t->to_attach (t, args, from_tty); |
| 2876 | if (targetdebug) |
| 2877 | fprintf_unfiltered (gdb_stdlog, "target_attach (%s, %d)\n", |
| 2878 | args, from_tty); |
| 2879 | return; |
| 2880 | } |
| 2881 | } |
| 2882 | |
| 2883 | internal_error (__FILE__, __LINE__, |
| 2884 | "could not find a target to attach"); |
| 2885 | } |
| 2886 | |
| 2887 | int |
| 2888 | target_thread_alive (ptid_t ptid) |
| 2889 | { |
| 2890 | struct target_ops *t; |
| 2891 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2892 | { |
| 2893 | if (t->to_thread_alive != NULL) |
| 2894 | { |
| 2895 | int retval; |
| 2896 | |
| 2897 | retval = t->to_thread_alive (t, ptid); |
| 2898 | if (targetdebug) |
| 2899 | fprintf_unfiltered (gdb_stdlog, "target_thread_alive (%d) = %d\n", |
| 2900 | PIDGET (ptid), retval); |
| 2901 | |
| 2902 | return retval; |
| 2903 | } |
| 2904 | } |
| 2905 | |
| 2906 | return 0; |
| 2907 | } |
| 2908 | |
| 2909 | void |
| 2910 | target_find_new_threads (void) |
| 2911 | { |
| 2912 | struct target_ops *t; |
| 2913 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 2914 | { |
| 2915 | if (t->to_find_new_threads != NULL) |
| 2916 | { |
| 2917 | t->to_find_new_threads (t); |
| 2918 | if (targetdebug) |
| 2919 | fprintf_unfiltered (gdb_stdlog, "target_find_new_threads ()\n"); |
| 2920 | |
| 2921 | return; |
| 2922 | } |
| 2923 | } |
| 2924 | } |
| 2925 | |
| 2926 | static void |
| 2927 | debug_to_post_attach (int pid) |
| 2928 | { |
| 2929 | debug_target.to_post_attach (pid); |
| 2930 | |
| 2931 | fprintf_unfiltered (gdb_stdlog, "target_post_attach (%d)\n", pid); |
| 2932 | } |
| 2933 | |
| 2934 | /* Return a pretty printed form of target_waitstatus. |
| 2935 | Space for the result is malloc'd, caller must free. */ |
| 2936 | |
| 2937 | char * |
| 2938 | target_waitstatus_to_string (const struct target_waitstatus *ws) |
| 2939 | { |
| 2940 | const char *kind_str = "status->kind = "; |
| 2941 | |
| 2942 | switch (ws->kind) |
| 2943 | { |
| 2944 | case TARGET_WAITKIND_EXITED: |
| 2945 | return xstrprintf ("%sexited, status = %d", |
| 2946 | kind_str, ws->value.integer); |
| 2947 | case TARGET_WAITKIND_STOPPED: |
| 2948 | return xstrprintf ("%sstopped, signal = %s", |
| 2949 | kind_str, target_signal_to_name (ws->value.sig)); |
| 2950 | case TARGET_WAITKIND_SIGNALLED: |
| 2951 | return xstrprintf ("%ssignalled, signal = %s", |
| 2952 | kind_str, target_signal_to_name (ws->value.sig)); |
| 2953 | case TARGET_WAITKIND_LOADED: |
| 2954 | return xstrprintf ("%sloaded", kind_str); |
| 2955 | case TARGET_WAITKIND_FORKED: |
| 2956 | return xstrprintf ("%sforked", kind_str); |
| 2957 | case TARGET_WAITKIND_VFORKED: |
| 2958 | return xstrprintf ("%svforked", kind_str); |
| 2959 | case TARGET_WAITKIND_EXECD: |
| 2960 | return xstrprintf ("%sexecd", kind_str); |
| 2961 | case TARGET_WAITKIND_SYSCALL_ENTRY: |
| 2962 | return xstrprintf ("%sentered syscall", kind_str); |
| 2963 | case TARGET_WAITKIND_SYSCALL_RETURN: |
| 2964 | return xstrprintf ("%sexited syscall", kind_str); |
| 2965 | case TARGET_WAITKIND_SPURIOUS: |
| 2966 | return xstrprintf ("%sspurious", kind_str); |
| 2967 | case TARGET_WAITKIND_IGNORE: |
| 2968 | return xstrprintf ("%signore", kind_str); |
| 2969 | case TARGET_WAITKIND_NO_HISTORY: |
| 2970 | return xstrprintf ("%sno-history", kind_str); |
| 2971 | default: |
| 2972 | return xstrprintf ("%sunknown???", kind_str); |
| 2973 | } |
| 2974 | } |
| 2975 | |
| 2976 | static void |
| 2977 | debug_print_register (const char * func, |
| 2978 | struct regcache *regcache, int regno) |
| 2979 | { |
| 2980 | struct gdbarch *gdbarch = get_regcache_arch (regcache); |
| 2981 | fprintf_unfiltered (gdb_stdlog, "%s ", func); |
| 2982 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch) |
| 2983 | && gdbarch_register_name (gdbarch, regno) != NULL |
| 2984 | && gdbarch_register_name (gdbarch, regno)[0] != '\0') |
| 2985 | fprintf_unfiltered (gdb_stdlog, "(%s)", |
| 2986 | gdbarch_register_name (gdbarch, regno)); |
| 2987 | else |
| 2988 | fprintf_unfiltered (gdb_stdlog, "(%d)", regno); |
| 2989 | if (regno >= 0 && regno < gdbarch_num_regs (gdbarch)) |
| 2990 | { |
| 2991 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
| 2992 | int i, size = register_size (gdbarch, regno); |
| 2993 | unsigned char buf[MAX_REGISTER_SIZE]; |
| 2994 | regcache_raw_collect (regcache, regno, buf); |
| 2995 | fprintf_unfiltered (gdb_stdlog, " = "); |
| 2996 | for (i = 0; i < size; i++) |
| 2997 | { |
| 2998 | fprintf_unfiltered (gdb_stdlog, "%02x", buf[i]); |
| 2999 | } |
| 3000 | if (size <= sizeof (LONGEST)) |
| 3001 | { |
| 3002 | ULONGEST val = extract_unsigned_integer (buf, size, byte_order); |
| 3003 | fprintf_unfiltered (gdb_stdlog, " %s %s", |
| 3004 | core_addr_to_string_nz (val), plongest (val)); |
| 3005 | } |
| 3006 | } |
| 3007 | fprintf_unfiltered (gdb_stdlog, "\n"); |
| 3008 | } |
| 3009 | |
| 3010 | void |
| 3011 | target_fetch_registers (struct regcache *regcache, int regno) |
| 3012 | { |
| 3013 | struct target_ops *t; |
| 3014 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 3015 | { |
| 3016 | if (t->to_fetch_registers != NULL) |
| 3017 | { |
| 3018 | t->to_fetch_registers (t, regcache, regno); |
| 3019 | if (targetdebug) |
| 3020 | debug_print_register ("target_fetch_registers", regcache, regno); |
| 3021 | return; |
| 3022 | } |
| 3023 | } |
| 3024 | } |
| 3025 | |
| 3026 | void |
| 3027 | target_store_registers (struct regcache *regcache, int regno) |
| 3028 | { |
| 3029 | |
| 3030 | struct target_ops *t; |
| 3031 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 3032 | { |
| 3033 | if (t->to_store_registers != NULL) |
| 3034 | { |
| 3035 | t->to_store_registers (t, regcache, regno); |
| 3036 | if (targetdebug) |
| 3037 | { |
| 3038 | debug_print_register ("target_store_registers", regcache, regno); |
| 3039 | } |
| 3040 | return; |
| 3041 | } |
| 3042 | } |
| 3043 | |
| 3044 | noprocess (); |
| 3045 | } |
| 3046 | |
| 3047 | int |
| 3048 | target_core_of_thread (ptid_t ptid) |
| 3049 | { |
| 3050 | struct target_ops *t; |
| 3051 | |
| 3052 | for (t = current_target.beneath; t != NULL; t = t->beneath) |
| 3053 | { |
| 3054 | if (t->to_core_of_thread != NULL) |
| 3055 | { |
| 3056 | int retval = t->to_core_of_thread (t, ptid); |
| 3057 | if (targetdebug) |
| 3058 | fprintf_unfiltered (gdb_stdlog, "target_core_of_thread (%d) = %d\n", |
| 3059 | PIDGET (ptid), retval); |
| 3060 | return retval; |
| 3061 | } |
| 3062 | } |
| 3063 | |
| 3064 | return -1; |
| 3065 | } |
| 3066 | |
| 3067 | static void |
| 3068 | debug_to_prepare_to_store (struct regcache *regcache) |
| 3069 | { |
| 3070 | debug_target.to_prepare_to_store (regcache); |
| 3071 | |
| 3072 | fprintf_unfiltered (gdb_stdlog, "target_prepare_to_store ()\n"); |
| 3073 | } |
| 3074 | |
| 3075 | static int |
| 3076 | deprecated_debug_xfer_memory (CORE_ADDR memaddr, bfd_byte *myaddr, int len, |
| 3077 | int write, struct mem_attrib *attrib, |
| 3078 | struct target_ops *target) |
| 3079 | { |
| 3080 | int retval; |
| 3081 | |
| 3082 | retval = debug_target.deprecated_xfer_memory (memaddr, myaddr, len, write, |
| 3083 | attrib, target); |
| 3084 | |
| 3085 | fprintf_unfiltered (gdb_stdlog, |
| 3086 | "target_xfer_memory (%s, xxx, %d, %s, xxx) = %d", |
| 3087 | paddress (target_gdbarch, memaddr), len, |
| 3088 | write ? "write" : "read", retval); |
| 3089 | |
| 3090 | if (retval > 0) |
| 3091 | { |
| 3092 | int i; |
| 3093 | |
| 3094 | fputs_unfiltered (", bytes =", gdb_stdlog); |
| 3095 | for (i = 0; i < retval; i++) |
| 3096 | { |
| 3097 | if ((((intptr_t) &(myaddr[i])) & 0xf) == 0) |
| 3098 | { |
| 3099 | if (targetdebug < 2 && i > 0) |
| 3100 | { |
| 3101 | fprintf_unfiltered (gdb_stdlog, " ..."); |
| 3102 | break; |
| 3103 | } |
| 3104 | fprintf_unfiltered (gdb_stdlog, "\n"); |
| 3105 | } |
| 3106 | |
| 3107 | fprintf_unfiltered (gdb_stdlog, " %02x", myaddr[i] & 0xff); |
| 3108 | } |
| 3109 | } |
| 3110 | |
| 3111 | fputc_unfiltered ('\n', gdb_stdlog); |
| 3112 | |
| 3113 | return retval; |
| 3114 | } |
| 3115 | |
| 3116 | static void |
| 3117 | debug_to_files_info (struct target_ops *target) |
| 3118 | { |
| 3119 | debug_target.to_files_info (target); |
| 3120 | |
| 3121 | fprintf_unfiltered (gdb_stdlog, "target_files_info (xxx)\n"); |
| 3122 | } |
| 3123 | |
| 3124 | static int |
| 3125 | debug_to_insert_breakpoint (struct gdbarch *gdbarch, |
| 3126 | struct bp_target_info *bp_tgt) |
| 3127 | { |
| 3128 | int retval; |
| 3129 | |
| 3130 | retval = debug_target.to_insert_breakpoint (gdbarch, bp_tgt); |
| 3131 | |
| 3132 | fprintf_unfiltered (gdb_stdlog, |
| 3133 | "target_insert_breakpoint (0x%lx, xxx) = %ld\n", |
| 3134 | (unsigned long) bp_tgt->placed_address, |
| 3135 | (unsigned long) retval); |
| 3136 | return retval; |
| 3137 | } |
| 3138 | |
| 3139 | static int |
| 3140 | debug_to_remove_breakpoint (struct gdbarch *gdbarch, |
| 3141 | struct bp_target_info *bp_tgt) |
| 3142 | { |
| 3143 | int retval; |
| 3144 | |
| 3145 | retval = debug_target.to_remove_breakpoint (gdbarch, bp_tgt); |
| 3146 | |
| 3147 | fprintf_unfiltered (gdb_stdlog, |
| 3148 | "target_remove_breakpoint (0x%lx, xxx) = %ld\n", |
| 3149 | (unsigned long) bp_tgt->placed_address, |
| 3150 | (unsigned long) retval); |
| 3151 | return retval; |
| 3152 | } |
| 3153 | |
| 3154 | static int |
| 3155 | debug_to_can_use_hw_breakpoint (int type, int cnt, int from_tty) |
| 3156 | { |
| 3157 | int retval; |
| 3158 | |
| 3159 | retval = debug_target.to_can_use_hw_breakpoint (type, cnt, from_tty); |
| 3160 | |
| 3161 | fprintf_unfiltered (gdb_stdlog, |
| 3162 | "target_can_use_hw_breakpoint (%ld, %ld, %ld) = %ld\n", |
| 3163 | (unsigned long) type, |
| 3164 | (unsigned long) cnt, |
| 3165 | (unsigned long) from_tty, |
| 3166 | (unsigned long) retval); |
| 3167 | return retval; |
| 3168 | } |
| 3169 | |
| 3170 | static int |
| 3171 | debug_to_region_ok_for_hw_watchpoint (CORE_ADDR addr, int len) |
| 3172 | { |
| 3173 | CORE_ADDR retval; |
| 3174 | |
| 3175 | retval = debug_target.to_region_ok_for_hw_watchpoint (addr, len); |
| 3176 | |
| 3177 | fprintf_unfiltered (gdb_stdlog, |
| 3178 | "target_region_ok_for_hw_watchpoint (%ld, %ld) = 0x%lx\n", |
| 3179 | (unsigned long) addr, |
| 3180 | (unsigned long) len, |
| 3181 | (unsigned long) retval); |
| 3182 | return retval; |
| 3183 | } |
| 3184 | |
| 3185 | static int |
| 3186 | debug_to_stopped_by_watchpoint (void) |
| 3187 | { |
| 3188 | int retval; |
| 3189 | |
| 3190 | retval = debug_target.to_stopped_by_watchpoint (); |
| 3191 | |
| 3192 | fprintf_unfiltered (gdb_stdlog, |
| 3193 | "target_stopped_by_watchpoint () = %ld\n", |
| 3194 | (unsigned long) retval); |
| 3195 | return retval; |
| 3196 | } |
| 3197 | |
| 3198 | static int |
| 3199 | debug_to_stopped_data_address (struct target_ops *target, CORE_ADDR *addr) |
| 3200 | { |
| 3201 | int retval; |
| 3202 | |
| 3203 | retval = debug_target.to_stopped_data_address (target, addr); |
| 3204 | |
| 3205 | fprintf_unfiltered (gdb_stdlog, |
| 3206 | "target_stopped_data_address ([0x%lx]) = %ld\n", |
| 3207 | (unsigned long)*addr, |
| 3208 | (unsigned long)retval); |
| 3209 | return retval; |
| 3210 | } |
| 3211 | |
| 3212 | static int |
| 3213 | debug_to_watchpoint_addr_within_range (struct target_ops *target, |
| 3214 | CORE_ADDR addr, |
| 3215 | CORE_ADDR start, int length) |
| 3216 | { |
| 3217 | int retval; |
| 3218 | |
| 3219 | retval = debug_target.to_watchpoint_addr_within_range (target, addr, |
| 3220 | start, length); |
| 3221 | |
| 3222 | fprintf_filtered (gdb_stdlog, |
| 3223 | "target_watchpoint_addr_within_range (0x%lx, 0x%lx, %d) = %d\n", |
| 3224 | (unsigned long) addr, (unsigned long) start, length, |
| 3225 | retval); |
| 3226 | return retval; |
| 3227 | } |
| 3228 | |
| 3229 | static int |
| 3230 | debug_to_insert_hw_breakpoint (struct gdbarch *gdbarch, |
| 3231 | struct bp_target_info *bp_tgt) |
| 3232 | { |
| 3233 | int retval; |
| 3234 | |
| 3235 | retval = debug_target.to_insert_hw_breakpoint (gdbarch, bp_tgt); |
| 3236 | |
| 3237 | fprintf_unfiltered (gdb_stdlog, |
| 3238 | "target_insert_hw_breakpoint (0x%lx, xxx) = %ld\n", |
| 3239 | (unsigned long) bp_tgt->placed_address, |
| 3240 | (unsigned long) retval); |
| 3241 | return retval; |
| 3242 | } |
| 3243 | |
| 3244 | static int |
| 3245 | debug_to_remove_hw_breakpoint (struct gdbarch *gdbarch, |
| 3246 | struct bp_target_info *bp_tgt) |
| 3247 | { |
| 3248 | int retval; |
| 3249 | |
| 3250 | retval = debug_target.to_remove_hw_breakpoint (gdbarch, bp_tgt); |
| 3251 | |
| 3252 | fprintf_unfiltered (gdb_stdlog, |
| 3253 | "target_remove_hw_breakpoint (0x%lx, xxx) = %ld\n", |
| 3254 | (unsigned long) bp_tgt->placed_address, |
| 3255 | (unsigned long) retval); |
| 3256 | return retval; |
| 3257 | } |
| 3258 | |
| 3259 | static int |
| 3260 | debug_to_insert_watchpoint (CORE_ADDR addr, int len, int type) |
| 3261 | { |
| 3262 | int retval; |
| 3263 | |
| 3264 | retval = debug_target.to_insert_watchpoint (addr, len, type); |
| 3265 | |
| 3266 | fprintf_unfiltered (gdb_stdlog, |
| 3267 | "target_insert_watchpoint (0x%lx, %d, %d) = %ld\n", |
| 3268 | (unsigned long) addr, len, type, (unsigned long) retval); |
| 3269 | return retval; |
| 3270 | } |
| 3271 | |
| 3272 | static int |
| 3273 | debug_to_remove_watchpoint (CORE_ADDR addr, int len, int type) |
| 3274 | { |
| 3275 | int retval; |
| 3276 | |
| 3277 | retval = debug_target.to_remove_watchpoint (addr, len, type); |
| 3278 | |
| 3279 | fprintf_unfiltered (gdb_stdlog, |
| 3280 | "target_remove_watchpoint (0x%lx, %d, %d) = %ld\n", |
| 3281 | (unsigned long) addr, len, type, (unsigned long) retval); |
| 3282 | return retval; |
| 3283 | } |
| 3284 | |
| 3285 | static void |
| 3286 | debug_to_terminal_init (void) |
| 3287 | { |
| 3288 | debug_target.to_terminal_init (); |
| 3289 | |
| 3290 | fprintf_unfiltered (gdb_stdlog, "target_terminal_init ()\n"); |
| 3291 | } |
| 3292 | |
| 3293 | static void |
| 3294 | debug_to_terminal_inferior (void) |
| 3295 | { |
| 3296 | debug_target.to_terminal_inferior (); |
| 3297 | |
| 3298 | fprintf_unfiltered (gdb_stdlog, "target_terminal_inferior ()\n"); |
| 3299 | } |
| 3300 | |
| 3301 | static void |
| 3302 | debug_to_terminal_ours_for_output (void) |
| 3303 | { |
| 3304 | debug_target.to_terminal_ours_for_output (); |
| 3305 | |
| 3306 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours_for_output ()\n"); |
| 3307 | } |
| 3308 | |
| 3309 | static void |
| 3310 | debug_to_terminal_ours (void) |
| 3311 | { |
| 3312 | debug_target.to_terminal_ours (); |
| 3313 | |
| 3314 | fprintf_unfiltered (gdb_stdlog, "target_terminal_ours ()\n"); |
| 3315 | } |
| 3316 | |
| 3317 | static void |
| 3318 | debug_to_terminal_save_ours (void) |
| 3319 | { |
| 3320 | debug_target.to_terminal_save_ours (); |
| 3321 | |
| 3322 | fprintf_unfiltered (gdb_stdlog, "target_terminal_save_ours ()\n"); |
| 3323 | } |
| 3324 | |
| 3325 | static void |
| 3326 | debug_to_terminal_info (char *arg, int from_tty) |
| 3327 | { |
| 3328 | debug_target.to_terminal_info (arg, from_tty); |
| 3329 | |
| 3330 | fprintf_unfiltered (gdb_stdlog, "target_terminal_info (%s, %d)\n", arg, |
| 3331 | from_tty); |
| 3332 | } |
| 3333 | |
| 3334 | static void |
| 3335 | debug_to_load (char *args, int from_tty) |
| 3336 | { |
| 3337 | debug_target.to_load (args, from_tty); |
| 3338 | |
| 3339 | fprintf_unfiltered (gdb_stdlog, "target_load (%s, %d)\n", args, from_tty); |
| 3340 | } |
| 3341 | |
| 3342 | static int |
| 3343 | debug_to_lookup_symbol (char *name, CORE_ADDR *addrp) |
| 3344 | { |
| 3345 | int retval; |
| 3346 | |
| 3347 | retval = debug_target.to_lookup_symbol (name, addrp); |
| 3348 | |
| 3349 | fprintf_unfiltered (gdb_stdlog, "target_lookup_symbol (%s, xxx)\n", name); |
| 3350 | |
| 3351 | return retval; |
| 3352 | } |
| 3353 | |
| 3354 | static void |
| 3355 | debug_to_post_startup_inferior (ptid_t ptid) |
| 3356 | { |
| 3357 | debug_target.to_post_startup_inferior (ptid); |
| 3358 | |
| 3359 | fprintf_unfiltered (gdb_stdlog, "target_post_startup_inferior (%d)\n", |
| 3360 | PIDGET (ptid)); |
| 3361 | } |
| 3362 | |
| 3363 | static void |
| 3364 | debug_to_acknowledge_created_inferior (int pid) |
| 3365 | { |
| 3366 | debug_target.to_acknowledge_created_inferior (pid); |
| 3367 | |
| 3368 | fprintf_unfiltered (gdb_stdlog, "target_acknowledge_created_inferior (%d)\n", |
| 3369 | pid); |
| 3370 | } |
| 3371 | |
| 3372 | static void |
| 3373 | debug_to_insert_fork_catchpoint (int pid) |
| 3374 | { |
| 3375 | debug_target.to_insert_fork_catchpoint (pid); |
| 3376 | |
| 3377 | fprintf_unfiltered (gdb_stdlog, "target_insert_fork_catchpoint (%d)\n", |
| 3378 | pid); |
| 3379 | } |
| 3380 | |
| 3381 | static int |
| 3382 | debug_to_remove_fork_catchpoint (int pid) |
| 3383 | { |
| 3384 | int retval; |
| 3385 | |
| 3386 | retval = debug_target.to_remove_fork_catchpoint (pid); |
| 3387 | |
| 3388 | fprintf_unfiltered (gdb_stdlog, "target_remove_fork_catchpoint (%d) = %d\n", |
| 3389 | pid, retval); |
| 3390 | |
| 3391 | return retval; |
| 3392 | } |
| 3393 | |
| 3394 | static void |
| 3395 | debug_to_insert_vfork_catchpoint (int pid) |
| 3396 | { |
| 3397 | debug_target.to_insert_vfork_catchpoint (pid); |
| 3398 | |
| 3399 | fprintf_unfiltered (gdb_stdlog, "target_insert_vfork_catchpoint (%d)\n", |
| 3400 | pid); |
| 3401 | } |
| 3402 | |
| 3403 | static int |
| 3404 | debug_to_remove_vfork_catchpoint (int pid) |
| 3405 | { |
| 3406 | int retval; |
| 3407 | |
| 3408 | retval = debug_target.to_remove_vfork_catchpoint (pid); |
| 3409 | |
| 3410 | fprintf_unfiltered (gdb_stdlog, "target_remove_vfork_catchpoint (%d) = %d\n", |
| 3411 | pid, retval); |
| 3412 | |
| 3413 | return retval; |
| 3414 | } |
| 3415 | |
| 3416 | static void |
| 3417 | debug_to_insert_exec_catchpoint (int pid) |
| 3418 | { |
| 3419 | debug_target.to_insert_exec_catchpoint (pid); |
| 3420 | |
| 3421 | fprintf_unfiltered (gdb_stdlog, "target_insert_exec_catchpoint (%d)\n", |
| 3422 | pid); |
| 3423 | } |
| 3424 | |
| 3425 | static int |
| 3426 | debug_to_remove_exec_catchpoint (int pid) |
| 3427 | { |
| 3428 | int retval; |
| 3429 | |
| 3430 | retval = debug_target.to_remove_exec_catchpoint (pid); |
| 3431 | |
| 3432 | fprintf_unfiltered (gdb_stdlog, "target_remove_exec_catchpoint (%d) = %d\n", |
| 3433 | pid, retval); |
| 3434 | |
| 3435 | return retval; |
| 3436 | } |
| 3437 | |
| 3438 | static int |
| 3439 | debug_to_has_exited (int pid, int wait_status, int *exit_status) |
| 3440 | { |
| 3441 | int has_exited; |
| 3442 | |
| 3443 | has_exited = debug_target.to_has_exited (pid, wait_status, exit_status); |
| 3444 | |
| 3445 | fprintf_unfiltered (gdb_stdlog, "target_has_exited (%d, %d, %d) = %d\n", |
| 3446 | pid, wait_status, *exit_status, has_exited); |
| 3447 | |
| 3448 | return has_exited; |
| 3449 | } |
| 3450 | |
| 3451 | static int |
| 3452 | debug_to_can_run (void) |
| 3453 | { |
| 3454 | int retval; |
| 3455 | |
| 3456 | retval = debug_target.to_can_run (); |
| 3457 | |
| 3458 | fprintf_unfiltered (gdb_stdlog, "target_can_run () = %d\n", retval); |
| 3459 | |
| 3460 | return retval; |
| 3461 | } |
| 3462 | |
| 3463 | static void |
| 3464 | debug_to_notice_signals (ptid_t ptid) |
| 3465 | { |
| 3466 | debug_target.to_notice_signals (ptid); |
| 3467 | |
| 3468 | fprintf_unfiltered (gdb_stdlog, "target_notice_signals (%d)\n", |
| 3469 | PIDGET (ptid)); |
| 3470 | } |
| 3471 | |
| 3472 | static struct gdbarch * |
| 3473 | debug_to_thread_architecture (struct target_ops *ops, ptid_t ptid) |
| 3474 | { |
| 3475 | struct gdbarch *retval; |
| 3476 | |
| 3477 | retval = debug_target.to_thread_architecture (ops, ptid); |
| 3478 | |
| 3479 | fprintf_unfiltered (gdb_stdlog, "target_thread_architecture (%s) = %s [%s]\n", |
| 3480 | target_pid_to_str (ptid), host_address_to_string (retval), |
| 3481 | gdbarch_bfd_arch_info (retval)->printable_name); |
| 3482 | return retval; |
| 3483 | } |
| 3484 | |
| 3485 | static void |
| 3486 | debug_to_stop (ptid_t ptid) |
| 3487 | { |
| 3488 | debug_target.to_stop (ptid); |
| 3489 | |
| 3490 | fprintf_unfiltered (gdb_stdlog, "target_stop (%s)\n", |
| 3491 | target_pid_to_str (ptid)); |
| 3492 | } |
| 3493 | |
| 3494 | static void |
| 3495 | debug_to_rcmd (char *command, |
| 3496 | struct ui_file *outbuf) |
| 3497 | { |
| 3498 | debug_target.to_rcmd (command, outbuf); |
| 3499 | fprintf_unfiltered (gdb_stdlog, "target_rcmd (%s, ...)\n", command); |
| 3500 | } |
| 3501 | |
| 3502 | static char * |
| 3503 | debug_to_pid_to_exec_file (int pid) |
| 3504 | { |
| 3505 | char *exec_file; |
| 3506 | |
| 3507 | exec_file = debug_target.to_pid_to_exec_file (pid); |
| 3508 | |
| 3509 | fprintf_unfiltered (gdb_stdlog, "target_pid_to_exec_file (%d) = %s\n", |
| 3510 | pid, exec_file); |
| 3511 | |
| 3512 | return exec_file; |
| 3513 | } |
| 3514 | |
| 3515 | static void |
| 3516 | setup_target_debug (void) |
| 3517 | { |
| 3518 | memcpy (&debug_target, ¤t_target, sizeof debug_target); |
| 3519 | |
| 3520 | current_target.to_open = debug_to_open; |
| 3521 | current_target.to_post_attach = debug_to_post_attach; |
| 3522 | current_target.to_prepare_to_store = debug_to_prepare_to_store; |
| 3523 | current_target.deprecated_xfer_memory = deprecated_debug_xfer_memory; |
| 3524 | current_target.to_files_info = debug_to_files_info; |
| 3525 | current_target.to_insert_breakpoint = debug_to_insert_breakpoint; |
| 3526 | current_target.to_remove_breakpoint = debug_to_remove_breakpoint; |
| 3527 | current_target.to_can_use_hw_breakpoint = debug_to_can_use_hw_breakpoint; |
| 3528 | current_target.to_insert_hw_breakpoint = debug_to_insert_hw_breakpoint; |
| 3529 | current_target.to_remove_hw_breakpoint = debug_to_remove_hw_breakpoint; |
| 3530 | current_target.to_insert_watchpoint = debug_to_insert_watchpoint; |
| 3531 | current_target.to_remove_watchpoint = debug_to_remove_watchpoint; |
| 3532 | current_target.to_stopped_by_watchpoint = debug_to_stopped_by_watchpoint; |
| 3533 | current_target.to_stopped_data_address = debug_to_stopped_data_address; |
| 3534 | current_target.to_watchpoint_addr_within_range = debug_to_watchpoint_addr_within_range; |
| 3535 | current_target.to_region_ok_for_hw_watchpoint = debug_to_region_ok_for_hw_watchpoint; |
| 3536 | current_target.to_terminal_init = debug_to_terminal_init; |
| 3537 | current_target.to_terminal_inferior = debug_to_terminal_inferior; |
| 3538 | current_target.to_terminal_ours_for_output = debug_to_terminal_ours_for_output; |
| 3539 | current_target.to_terminal_ours = debug_to_terminal_ours; |
| 3540 | current_target.to_terminal_save_ours = debug_to_terminal_save_ours; |
| 3541 | current_target.to_terminal_info = debug_to_terminal_info; |
| 3542 | current_target.to_load = debug_to_load; |
| 3543 | current_target.to_lookup_symbol = debug_to_lookup_symbol; |
| 3544 | current_target.to_post_startup_inferior = debug_to_post_startup_inferior; |
| 3545 | current_target.to_acknowledge_created_inferior = debug_to_acknowledge_created_inferior; |
| 3546 | current_target.to_insert_fork_catchpoint = debug_to_insert_fork_catchpoint; |
| 3547 | current_target.to_remove_fork_catchpoint = debug_to_remove_fork_catchpoint; |
| 3548 | current_target.to_insert_vfork_catchpoint = debug_to_insert_vfork_catchpoint; |
| 3549 | current_target.to_remove_vfork_catchpoint = debug_to_remove_vfork_catchpoint; |
| 3550 | current_target.to_insert_exec_catchpoint = debug_to_insert_exec_catchpoint; |
| 3551 | current_target.to_remove_exec_catchpoint = debug_to_remove_exec_catchpoint; |
| 3552 | current_target.to_has_exited = debug_to_has_exited; |
| 3553 | current_target.to_can_run = debug_to_can_run; |
| 3554 | current_target.to_notice_signals = debug_to_notice_signals; |
| 3555 | current_target.to_stop = debug_to_stop; |
| 3556 | current_target.to_rcmd = debug_to_rcmd; |
| 3557 | current_target.to_pid_to_exec_file = debug_to_pid_to_exec_file; |
| 3558 | current_target.to_thread_architecture = debug_to_thread_architecture; |
| 3559 | } |
| 3560 | \f |
| 3561 | |
| 3562 | static char targ_desc[] = |
| 3563 | "Names of targets and files being debugged.\n\ |
| 3564 | Shows the entire stack of targets currently in use (including the exec-file,\n\ |
| 3565 | core-file, and process, if any), as well as the symbol file name."; |
| 3566 | |
| 3567 | static void |
| 3568 | do_monitor_command (char *cmd, |
| 3569 | int from_tty) |
| 3570 | { |
| 3571 | if ((current_target.to_rcmd |
| 3572 | == (void (*) (char *, struct ui_file *)) tcomplain) |
| 3573 | || (current_target.to_rcmd == debug_to_rcmd |
| 3574 | && (debug_target.to_rcmd |
| 3575 | == (void (*) (char *, struct ui_file *)) tcomplain))) |
| 3576 | error (_("\"monitor\" command not supported by this target.")); |
| 3577 | target_rcmd (cmd, gdb_stdtarg); |
| 3578 | } |
| 3579 | |
| 3580 | /* Print the name of each layers of our target stack. */ |
| 3581 | |
| 3582 | static void |
| 3583 | maintenance_print_target_stack (char *cmd, int from_tty) |
| 3584 | { |
| 3585 | struct target_ops *t; |
| 3586 | |
| 3587 | printf_filtered (_("The current target stack is:\n")); |
| 3588 | |
| 3589 | for (t = target_stack; t != NULL; t = t->beneath) |
| 3590 | { |
| 3591 | printf_filtered (" - %s (%s)\n", t->to_shortname, t->to_longname); |
| 3592 | } |
| 3593 | } |
| 3594 | |
| 3595 | /* Controls if async mode is permitted. */ |
| 3596 | int target_async_permitted = 0; |
| 3597 | |
| 3598 | /* The set command writes to this variable. If the inferior is |
| 3599 | executing, linux_nat_async_permitted is *not* updated. */ |
| 3600 | static int target_async_permitted_1 = 0; |
| 3601 | |
| 3602 | static void |
| 3603 | set_maintenance_target_async_permitted (char *args, int from_tty, |
| 3604 | struct cmd_list_element *c) |
| 3605 | { |
| 3606 | if (have_live_inferiors ()) |
| 3607 | { |
| 3608 | target_async_permitted_1 = target_async_permitted; |
| 3609 | error (_("Cannot change this setting while the inferior is running.")); |
| 3610 | } |
| 3611 | |
| 3612 | target_async_permitted = target_async_permitted_1; |
| 3613 | } |
| 3614 | |
| 3615 | static void |
| 3616 | show_maintenance_target_async_permitted (struct ui_file *file, int from_tty, |
| 3617 | struct cmd_list_element *c, |
| 3618 | const char *value) |
| 3619 | { |
| 3620 | fprintf_filtered (file, _("\ |
| 3621 | Controlling the inferior in asynchronous mode is %s.\n"), value); |
| 3622 | } |
| 3623 | |
| 3624 | void |
| 3625 | initialize_targets (void) |
| 3626 | { |
| 3627 | init_dummy_target (); |
| 3628 | push_target (&dummy_target); |
| 3629 | |
| 3630 | add_info ("target", target_info, targ_desc); |
| 3631 | add_info ("files", target_info, targ_desc); |
| 3632 | |
| 3633 | add_setshow_zinteger_cmd ("target", class_maintenance, &targetdebug, _("\ |
| 3634 | Set target debugging."), _("\ |
| 3635 | Show target debugging."), _("\ |
| 3636 | When non-zero, target debugging is enabled. Higher numbers are more\n\ |
| 3637 | verbose. Changes do not take effect until the next \"run\" or \"target\"\n\ |
| 3638 | command."), |
| 3639 | NULL, |
| 3640 | show_targetdebug, |
| 3641 | &setdebuglist, &showdebuglist); |
| 3642 | |
| 3643 | add_setshow_boolean_cmd ("trust-readonly-sections", class_support, |
| 3644 | &trust_readonly, _("\ |
| 3645 | Set mode for reading from readonly sections."), _("\ |
| 3646 | Show mode for reading from readonly sections."), _("\ |
| 3647 | When this mode is on, memory reads from readonly sections (such as .text)\n\ |
| 3648 | will be read from the object file instead of from the target. This will\n\ |
| 3649 | result in significant performance improvement for remote targets."), |
| 3650 | NULL, |
| 3651 | show_trust_readonly, |
| 3652 | &setlist, &showlist); |
| 3653 | |
| 3654 | add_com ("monitor", class_obscure, do_monitor_command, |
| 3655 | _("Send a command to the remote monitor (remote targets only).")); |
| 3656 | |
| 3657 | add_cmd ("target-stack", class_maintenance, maintenance_print_target_stack, |
| 3658 | _("Print the name of each layer of the internal target stack."), |
| 3659 | &maintenanceprintlist); |
| 3660 | |
| 3661 | add_setshow_boolean_cmd ("target-async", no_class, |
| 3662 | &target_async_permitted_1, _("\ |
| 3663 | Set whether gdb controls the inferior in asynchronous mode."), _("\ |
| 3664 | Show whether gdb controls the inferior in asynchronous mode."), _("\ |
| 3665 | Tells gdb whether to control the inferior in asynchronous mode."), |
| 3666 | set_maintenance_target_async_permitted, |
| 3667 | show_maintenance_target_async_permitted, |
| 3668 | &setlist, |
| 3669 | &showlist); |
| 3670 | |
| 3671 | add_setshow_boolean_cmd ("stack-cache", class_support, |
| 3672 | &stack_cache_enabled_p_1, _("\ |
| 3673 | Set cache use for stack access."), _("\ |
| 3674 | Show cache use for stack access."), _("\ |
| 3675 | When on, use the data cache for all stack access, regardless of any\n\ |
| 3676 | configured memory regions. This improves remote performance significantly.\n\ |
| 3677 | By default, caching for stack access is on."), |
| 3678 | set_stack_cache_enabled_p, |
| 3679 | show_stack_cache_enabled_p, |
| 3680 | &setlist, &showlist); |
| 3681 | |
| 3682 | target_dcache = dcache_init (); |
| 3683 | } |