| 1 | /* Support for GDB maintenance commands. |
| 2 | Copyright 1992, 1993, 1994 Free Software Foundation, Inc. |
| 3 | Written by Fred Fish at Cygnus Support. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, |
| 20 | Boston, MA 02111-1307, USA. */ |
| 21 | |
| 22 | |
| 23 | #include "defs.h" |
| 24 | #include <ctype.h> |
| 25 | #include <signal.h> |
| 26 | #include "command.h" |
| 27 | #include "gdbcmd.h" |
| 28 | #include "symtab.h" |
| 29 | #include "gdbtypes.h" |
| 30 | #include "demangle.h" |
| 31 | #include "gdbcore.h" |
| 32 | #include "expression.h" /* For language.h */ |
| 33 | #include "language.h" |
| 34 | #include "symfile.h" |
| 35 | #include "objfiles.h" |
| 36 | #include "value.h" |
| 37 | |
| 38 | extern void _initialize_maint_cmds PARAMS ((void)); |
| 39 | |
| 40 | static void maintenance_command PARAMS ((char *, int)); |
| 41 | |
| 42 | static void maintenance_dump_me PARAMS ((char *, int)); |
| 43 | |
| 44 | static void maintenance_internal_error PARAMS ((char *args, int from_tty)); |
| 45 | |
| 46 | static void maintenance_demangle PARAMS ((char *, int)); |
| 47 | |
| 48 | static void maintenance_time_display PARAMS ((char *, int)); |
| 49 | |
| 50 | static void maintenance_space_display PARAMS ((char *, int)); |
| 51 | |
| 52 | static void maintenance_info_command PARAMS ((char *, int)); |
| 53 | |
| 54 | static void print_section_table PARAMS ((bfd *, asection *, PTR)); |
| 55 | |
| 56 | static void maintenance_info_sections PARAMS ((char *, int)); |
| 57 | |
| 58 | static void maintenance_print_command PARAMS ((char *, int)); |
| 59 | |
| 60 | /* Set this to the maximum number of seconds to wait instead of waiting forever |
| 61 | in target_wait(). If this timer times out, then it generates an error and |
| 62 | the command is aborted. This replaces most of the need for timeouts in the |
| 63 | GDB test suite, and makes it possible to distinguish between a hung target |
| 64 | and one with slow communications. */ |
| 65 | |
| 66 | int watchdog = 0; |
| 67 | |
| 68 | /* |
| 69 | |
| 70 | LOCAL FUNCTION |
| 71 | |
| 72 | maintenance_command -- access the maintenance subcommands |
| 73 | |
| 74 | SYNOPSIS |
| 75 | |
| 76 | void maintenance_command (char *args, int from_tty) |
| 77 | |
| 78 | DESCRIPTION |
| 79 | |
| 80 | */ |
| 81 | |
| 82 | static void |
| 83 | maintenance_command (args, from_tty) |
| 84 | char *args; |
| 85 | int from_tty; |
| 86 | { |
| 87 | printf_unfiltered ("\"maintenance\" must be followed by the name of a maintenance command.\n"); |
| 88 | help_list (maintenancelist, "maintenance ", -1, gdb_stdout); |
| 89 | } |
| 90 | |
| 91 | #ifndef _WIN32 |
| 92 | /* ARGSUSED */ |
| 93 | static void |
| 94 | maintenance_dump_me (args, from_tty) |
| 95 | char *args; |
| 96 | int from_tty; |
| 97 | { |
| 98 | if (query ("Should GDB dump core? ")) |
| 99 | { |
| 100 | #ifdef __DJGPP__ |
| 101 | /* SIGQUIT by default is ignored, so use SIGABRT instead. */ |
| 102 | signal (SIGABRT, SIG_DFL); |
| 103 | kill (getpid (), SIGABRT); |
| 104 | #else |
| 105 | signal (SIGQUIT, SIG_DFL); |
| 106 | kill (getpid (), SIGQUIT); |
| 107 | #endif |
| 108 | } |
| 109 | } |
| 110 | #endif |
| 111 | |
| 112 | /* Stimulate the internal error mechanism that GDB uses when an |
| 113 | internal problem is detected. Allows testing of the mechanism. |
| 114 | Also useful when the user wants to drop a core file but not exit |
| 115 | GDB. */ |
| 116 | |
| 117 | static void |
| 118 | maintenance_internal_error (char *args, int from_tty) |
| 119 | { |
| 120 | internal_error ("internal maintenance"); |
| 121 | } |
| 122 | |
| 123 | /* Someday we should allow demangling for things other than just |
| 124 | explicit strings. For example, we might want to be able to |
| 125 | specify the address of a string in either GDB's process space |
| 126 | or the debuggee's process space, and have gdb fetch and demangle |
| 127 | that string. If we have a char* pointer "ptr" that points to |
| 128 | a string, we might want to be able to given just the name and |
| 129 | have GDB demangle and print what it points to, etc. (FIXME) */ |
| 130 | |
| 131 | static void |
| 132 | maintenance_demangle (args, from_tty) |
| 133 | char *args; |
| 134 | int from_tty; |
| 135 | { |
| 136 | char *demangled; |
| 137 | |
| 138 | if (args == NULL || *args == '\0') |
| 139 | { |
| 140 | printf_unfiltered ("\"maintenance demangle\" takes an argument to demangle.\n"); |
| 141 | } |
| 142 | else |
| 143 | { |
| 144 | demangled = cplus_demangle (args, DMGL_ANSI | DMGL_PARAMS); |
| 145 | if (demangled != NULL) |
| 146 | { |
| 147 | printf_unfiltered ("%s\n", demangled); |
| 148 | free (demangled); |
| 149 | } |
| 150 | else |
| 151 | { |
| 152 | printf_unfiltered ("Can't demangle \"%s\"\n", args); |
| 153 | } |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | static void |
| 158 | maintenance_time_display (args, from_tty) |
| 159 | char *args; |
| 160 | int from_tty; |
| 161 | { |
| 162 | extern int display_time; |
| 163 | |
| 164 | if (args == NULL || *args == '\0') |
| 165 | printf_unfiltered ("\"maintenance time\" takes a numeric argument.\n"); |
| 166 | else |
| 167 | display_time = strtol (args, NULL, 10); |
| 168 | } |
| 169 | |
| 170 | static void |
| 171 | maintenance_space_display (args, from_tty) |
| 172 | char *args; |
| 173 | int from_tty; |
| 174 | { |
| 175 | extern int display_space; |
| 176 | |
| 177 | if (args == NULL || *args == '\0') |
| 178 | printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n"); |
| 179 | else |
| 180 | display_space = strtol (args, NULL, 10); |
| 181 | } |
| 182 | |
| 183 | /* The "maintenance info" command is defined as a prefix, with allow_unknown 0. |
| 184 | Therefore, its own definition is called only for "maintenance info" with |
| 185 | no args. */ |
| 186 | |
| 187 | /* ARGSUSED */ |
| 188 | static void |
| 189 | maintenance_info_command (arg, from_tty) |
| 190 | char *arg; |
| 191 | int from_tty; |
| 192 | { |
| 193 | printf_unfiltered ("\"maintenance info\" must be followed by the name of an info command.\n"); |
| 194 | help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout); |
| 195 | } |
| 196 | |
| 197 | static void |
| 198 | print_section_table (abfd, asect, ignore) |
| 199 | bfd *abfd; |
| 200 | asection *asect; |
| 201 | PTR ignore; |
| 202 | { |
| 203 | flagword flags; |
| 204 | |
| 205 | flags = bfd_get_section_flags (abfd, asect); |
| 206 | |
| 207 | /* FIXME-32x64: Need print_address_numeric with field width. */ |
| 208 | printf_filtered (" %s", |
| 209 | local_hex_string_custom |
| 210 | ((unsigned long) bfd_section_vma (abfd, asect), "08l")); |
| 211 | printf_filtered ("->%s", |
| 212 | local_hex_string_custom |
| 213 | ((unsigned long) (bfd_section_vma (abfd, asect) |
| 214 | + bfd_section_size (abfd, asect)), |
| 215 | "08l")); |
| 216 | printf_filtered (" at %s", |
| 217 | local_hex_string_custom |
| 218 | ((unsigned long) asect->filepos, "08l")); |
| 219 | printf_filtered (": %s", bfd_section_name (abfd, asect)); |
| 220 | |
| 221 | if (flags & SEC_ALLOC) |
| 222 | printf_filtered (" ALLOC"); |
| 223 | if (flags & SEC_LOAD) |
| 224 | printf_filtered (" LOAD"); |
| 225 | if (flags & SEC_RELOC) |
| 226 | printf_filtered (" RELOC"); |
| 227 | if (flags & SEC_READONLY) |
| 228 | printf_filtered (" READONLY"); |
| 229 | if (flags & SEC_CODE) |
| 230 | printf_filtered (" CODE"); |
| 231 | if (flags & SEC_DATA) |
| 232 | printf_filtered (" DATA"); |
| 233 | if (flags & SEC_ROM) |
| 234 | printf_filtered (" ROM"); |
| 235 | if (flags & SEC_CONSTRUCTOR) |
| 236 | printf_filtered (" CONSTRUCTOR"); |
| 237 | if (flags & SEC_HAS_CONTENTS) |
| 238 | printf_filtered (" HAS_CONTENTS"); |
| 239 | if (flags & SEC_NEVER_LOAD) |
| 240 | printf_filtered (" NEVER_LOAD"); |
| 241 | if (flags & SEC_COFF_SHARED_LIBRARY) |
| 242 | printf_filtered (" COFF_SHARED_LIBRARY"); |
| 243 | if (flags & SEC_IS_COMMON) |
| 244 | printf_filtered (" IS_COMMON"); |
| 245 | |
| 246 | printf_filtered ("\n"); |
| 247 | } |
| 248 | |
| 249 | /* ARGSUSED */ |
| 250 | static void |
| 251 | maintenance_info_sections (arg, from_tty) |
| 252 | char *arg; |
| 253 | int from_tty; |
| 254 | { |
| 255 | if (exec_bfd) |
| 256 | { |
| 257 | printf_filtered ("Exec file:\n"); |
| 258 | printf_filtered (" `%s', ", bfd_get_filename (exec_bfd)); |
| 259 | wrap_here (" "); |
| 260 | printf_filtered ("file type %s.\n", bfd_get_target (exec_bfd)); |
| 261 | bfd_map_over_sections (exec_bfd, print_section_table, 0); |
| 262 | } |
| 263 | |
| 264 | if (core_bfd) |
| 265 | { |
| 266 | printf_filtered ("Core file:\n"); |
| 267 | printf_filtered (" `%s', ", bfd_get_filename (core_bfd)); |
| 268 | wrap_here (" "); |
| 269 | printf_filtered ("file type %s.\n", bfd_get_target (core_bfd)); |
| 270 | bfd_map_over_sections (core_bfd, print_section_table, 0); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | /* ARGSUSED */ |
| 275 | void |
| 276 | maintenance_print_statistics (args, from_tty) |
| 277 | char *args; |
| 278 | int from_tty; |
| 279 | { |
| 280 | print_objfile_statistics (); |
| 281 | print_symbol_bcache_statistics (); |
| 282 | } |
| 283 | |
| 284 | /* The "maintenance print" command is defined as a prefix, with allow_unknown |
| 285 | 0. Therefore, its own definition is called only for "maintenance print" |
| 286 | with no args. */ |
| 287 | |
| 288 | /* ARGSUSED */ |
| 289 | static void |
| 290 | maintenance_print_command (arg, from_tty) |
| 291 | char *arg; |
| 292 | int from_tty; |
| 293 | { |
| 294 | printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n"); |
| 295 | help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout); |
| 296 | } |
| 297 | |
| 298 | /* The "maintenance translate-address" command converts a section and address |
| 299 | to a symbol. This can be called in two ways: |
| 300 | maintenance translate-address <secname> <addr> |
| 301 | or maintenance translate-address <addr> |
| 302 | */ |
| 303 | |
| 304 | static void |
| 305 | maintenance_translate_address (arg, from_tty) |
| 306 | char *arg; |
| 307 | int from_tty; |
| 308 | { |
| 309 | CORE_ADDR address; |
| 310 | asection *sect; |
| 311 | char *p; |
| 312 | struct minimal_symbol *sym; |
| 313 | struct objfile *objfile; |
| 314 | |
| 315 | if (arg == NULL || *arg == 0) |
| 316 | error ("requires argument (address or section + address)"); |
| 317 | |
| 318 | sect = NULL; |
| 319 | p = arg; |
| 320 | |
| 321 | if (!isdigit (*p)) |
| 322 | { /* See if we have a valid section name */ |
| 323 | while (*p && !isspace (*p)) /* Find end of section name */ |
| 324 | p++; |
| 325 | if (*p == '\000') /* End of command? */ |
| 326 | error ("Need to specify <section-name> and <address>"); |
| 327 | *p++ = '\000'; |
| 328 | while (isspace (*p)) |
| 329 | p++; /* Skip whitespace */ |
| 330 | |
| 331 | ALL_OBJFILES (objfile) |
| 332 | { |
| 333 | sect = bfd_get_section_by_name (objfile->obfd, arg); |
| 334 | if (sect != NULL) |
| 335 | break; |
| 336 | } |
| 337 | |
| 338 | if (!sect) |
| 339 | error ("Unknown section %s.", arg); |
| 340 | } |
| 341 | |
| 342 | address = parse_and_eval_address (p); |
| 343 | |
| 344 | if (sect) |
| 345 | sym = lookup_minimal_symbol_by_pc_section (address, sect); |
| 346 | else |
| 347 | sym = lookup_minimal_symbol_by_pc (address); |
| 348 | |
| 349 | if (sym) |
| 350 | printf_filtered ("%s+%s\n", |
| 351 | SYMBOL_SOURCE_NAME (sym), |
| 352 | paddr_u (address - SYMBOL_VALUE_ADDRESS (sym))); |
| 353 | else if (sect) |
| 354 | printf_filtered ("no symbol at %s:0x%s\n", sect->name, paddr (address)); |
| 355 | else |
| 356 | printf_filtered ("no symbol at 0x%s\n", paddr (address)); |
| 357 | |
| 358 | return; |
| 359 | } |
| 360 | |
| 361 | void |
| 362 | _initialize_maint_cmds () |
| 363 | { |
| 364 | add_prefix_cmd ("maintenance", class_maintenance, maintenance_command, |
| 365 | "Commands for use by GDB maintainers.\n\ |
| 366 | Includes commands to dump specific internal GDB structures in\n\ |
| 367 | a human readable form, to cause GDB to deliberately dump core,\n\ |
| 368 | to test internal functions such as the C++ demangler, etc.", |
| 369 | &maintenancelist, "maintenance ", 0, |
| 370 | &cmdlist); |
| 371 | |
| 372 | add_com_alias ("mt", "maintenance", class_maintenance, 1); |
| 373 | |
| 374 | add_prefix_cmd ("info", class_maintenance, maintenance_info_command, |
| 375 | "Commands for showing internal info about the program being debugged.", |
| 376 | &maintenanceinfolist, "maintenance info ", 0, |
| 377 | &maintenancelist); |
| 378 | |
| 379 | add_cmd ("sections", class_maintenance, maintenance_info_sections, |
| 380 | "List the BFD sections of the exec and core files.", |
| 381 | &maintenanceinfolist); |
| 382 | |
| 383 | add_prefix_cmd ("print", class_maintenance, maintenance_print_command, |
| 384 | "Maintenance command for printing GDB internal state.", |
| 385 | &maintenanceprintlist, "maintenance print ", 0, |
| 386 | &maintenancelist); |
| 387 | |
| 388 | #ifndef _WIN32 |
| 389 | add_cmd ("dump-me", class_maintenance, maintenance_dump_me, |
| 390 | "Get fatal error; make debugger dump its core.\n\ |
| 391 | GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\ |
| 392 | itself a SIGQUIT signal.", |
| 393 | &maintenancelist); |
| 394 | #endif |
| 395 | |
| 396 | add_cmd ("internal-error", class_maintenance, maintenance_internal_error, |
| 397 | "Give GDB an internal error.\n\ |
| 398 | Cause GDB to behave as if an internal error was detected.", |
| 399 | &maintenancelist); |
| 400 | |
| 401 | add_cmd ("demangle", class_maintenance, maintenance_demangle, |
| 402 | "Demangle a C++ mangled name.\n\ |
| 403 | Call internal GDB demangler routine to demangle a C++ link name\n\ |
| 404 | and prints the result.", |
| 405 | &maintenancelist); |
| 406 | |
| 407 | add_cmd ("time", class_maintenance, maintenance_time_display, |
| 408 | "Set the display of time usage.\n\ |
| 409 | If nonzero, will cause the execution time for each command to be\n\ |
| 410 | displayed, following the command's output.", |
| 411 | &maintenancelist); |
| 412 | |
| 413 | add_cmd ("space", class_maintenance, maintenance_space_display, |
| 414 | "Set the display of space usage.\n\ |
| 415 | If nonzero, will cause the execution space for each command to be\n\ |
| 416 | displayed, following the command's output.", |
| 417 | &maintenancelist); |
| 418 | |
| 419 | add_cmd ("type", class_maintenance, maintenance_print_type, |
| 420 | "Print a type chain for a given symbol.\n\ |
| 421 | For each node in a type chain, print the raw data for each member of\n\ |
| 422 | the type structure, and the interpretation of the data.", |
| 423 | &maintenanceprintlist); |
| 424 | |
| 425 | add_cmd ("symbols", class_maintenance, maintenance_print_symbols, |
| 426 | "Print dump of current symbol definitions.\n\ |
| 427 | Entries in the full symbol table are dumped to file OUTFILE.\n\ |
| 428 | If a SOURCE file is specified, dump only that file's symbols.", |
| 429 | &maintenanceprintlist); |
| 430 | |
| 431 | add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols, |
| 432 | "Print dump of current minimal symbol definitions.\n\ |
| 433 | Entries in the minimal symbol table are dumped to file OUTFILE.\n\ |
| 434 | If a SOURCE file is specified, dump only that file's minimal symbols.", |
| 435 | &maintenanceprintlist); |
| 436 | |
| 437 | add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, |
| 438 | "Print dump of current partial symbol definitions.\n\ |
| 439 | Entries in the partial symbol table are dumped to file OUTFILE.\n\ |
| 440 | If a SOURCE file is specified, dump only that file's partial symbols.", |
| 441 | &maintenanceprintlist); |
| 442 | |
| 443 | add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles, |
| 444 | "Print dump of current object file definitions.", |
| 445 | &maintenanceprintlist); |
| 446 | |
| 447 | add_cmd ("statistics", class_maintenance, maintenance_print_statistics, |
| 448 | "Print statistics about internal gdb state.", |
| 449 | &maintenanceprintlist); |
| 450 | |
| 451 | add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs, |
| 452 | "Check consistency of psymtabs and symtabs.", |
| 453 | &maintenancelist); |
| 454 | |
| 455 | add_cmd ("translate-address", class_maintenance, maintenance_translate_address, |
| 456 | "Translate a section name and address to a symbol.", |
| 457 | &maintenancelist); |
| 458 | |
| 459 | add_show_from_set ( |
| 460 | add_set_cmd ("watchdog", class_maintenance, var_zinteger, (char *) &watchdog, |
| 461 | "Set watchdog timer.\n\ |
| 462 | When non-zero, this timeout is used instead of waiting forever for a target to\n\ |
| 463 | finish a low-level step or continue operation. If the specified amount of time\n\ |
| 464 | passes without a response from the target, an error occurs.", &setlist), |
| 465 | &showlist); |
| 466 | } |