gdb/maint.c

   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, Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include "defs.h"
  23
  24 #if MAINTENANCE_CMDS    /* Entire rest of file goes away if not including maint cmds */
  25
  26 #include <signal.h>
  27 #include "command.h"
  28 #include "gdbcmd.h"
  29 #include "symtab.h"
  30 #include "gdbtypes.h"
  31 #include "demangle.h"
  32 #include "gdbcore.h"
  33 #include "expression.h" /* For language.h */
  34 #include "language.h"
  35 #include "symfile.h"
  36 #include "objfiles.h"
  37
  38 #ifdef HAVE_UNISTD_H
  39 #include <unistd.h>
  40 #endif
  41
  42 static void maintenance_command PARAMS ((char *, int));
  43
  44 static void maintenance_dump_me PARAMS ((char *, int));
  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 /* Set this to the maximum number of seconds to wait instead of waiting forever
  53    in target_wait().  If this timer times out, then it generates an error and
  54    the command is aborted.  This replaces most of the need for timeouts in the
  55    GDB test suite, and makes it possible to distinguish between a hung target
  56    and one with slow communications.  */
  57
  58 int watchdog = 0;
  59
  60 /*
  61
  62 LOCAL FUNCTION
  63
  64         maintenance_command -- access the maintenance subcommands
  65
  66 SYNOPSIS
  67
  68         void maintenance_command (char *args, int from_tty)
  69
  70 DESCRIPTION
  71
  72 */
  73
  74 static void
  75 maintenance_command (args, from_tty)
  76      char *args;
  77      int from_tty;
  78 {
  79   printf_unfiltered ("\"maintenance\" must be followed by the name of a maintenance command.\n");
  80   help_list (maintenancelist, "maintenance ", -1, gdb_stdout);
  81 }
  82
  83
  84 /* ARGSUSED */
  85 static void
  86 maintenance_dump_me (args, from_tty)
  87      char *args;
  88      int from_tty;
  89 {
  90   if (query ("Should GDB dump core? "))
  91     {
  92       signal (SIGQUIT, SIG_DFL);
  93       kill (getpid (), SIGQUIT);
  94     }
  95 }
  96
  97 /*  Someday we should allow demangling for things other than just
  98     explicit strings.  For example, we might want to be able to
  99     specify the address of a string in either GDB's process space
 100     or the debuggee's process space, and have gdb fetch and demangle
 101     that string.  If we have a char* pointer "ptr" that points to
 102     a string, we might want to be able to given just the name and
 103     have GDB demangle and print what it points to, etc.  (FIXME) */
 104
 105 static void
 106 maintenance_demangle (args, from_tty)
 107      char *args;
 108      int from_tty;
 109 {
 110   char *demangled;
 111
 112   if (args == NULL || *args == '\0')
 113     {
 114       printf_unfiltered ("\"maintenance demangle\" takes an argument to demangle.\n");
 115     }
 116   else
 117     {
 118       demangled = cplus_demangle (args, DMGL_ANSI | DMGL_PARAMS);
 119       if (demangled != NULL)
 120         {
 121           printf_unfiltered ("%s\n", demangled);
 122           free (demangled);
 123         }
 124       else
 125         {
 126           printf_unfiltered ("Can't demangle \"%s\"\n", args);
 127         }
 128     }
 129 }
 130
 131 static void
 132 maintenance_time_display (args, from_tty)
 133      char *args;
 134      int from_tty;
 135 {
 136   extern int display_time;
 137
 138   if (args == NULL || *args == '\0')
 139     printf_unfiltered ("\"maintenance time\" takes a numeric argument.\n");
 140   else
 141     display_time = strtol (args, NULL, 10);
 142 }
 143
 144 static void
 145 maintenance_space_display (args, from_tty)
 146      char *args;
 147      int from_tty;
 148 {
 149   extern int display_space;
 150
 151   if (args == NULL || *args == '\0')
 152     printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n");
 153   else
 154     display_space = strtol (args, NULL, 10);
 155 }
 156
 157 /* The "maintenance info" command is defined as a prefix, with allow_unknown 0.
 158    Therefore, its own definition is called only for "maintenance info" with
 159    no args.  */
 160
 161 /* ARGSUSED */
 162 static void
 163 maintenance_info_command (arg, from_tty)
 164      char *arg;
 165      int from_tty;
 166 {
 167   printf_unfiltered ("\"maintenance info\" must be followed by the name of an info command.\n");
 168   help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout);
 169 }
 170
 171 static void
 172 print_section_table (abfd, asect, ignore)
 173      bfd *abfd;
 174      asection *asect;
 175      PTR ignore;
 176 {
 177   flagword flags;
 178
 179   flags = bfd_get_section_flags (abfd, asect);
 180
 181   /* FIXME-32x64: Need print_address_numeric with field width.  */
 182   printf_filtered ("    %s",
 183                    local_hex_string_custom
 184                      ((unsigned long) bfd_section_vma (abfd, asect), "08l"));
 185   printf_filtered ("->%s",
 186                    local_hex_string_custom
 187                      ((unsigned long) (bfd_section_vma (abfd, asect)
 188                                        + bfd_section_size (abfd, asect)),
 189                       "08l"));
 190   printf_filtered (" at %s",
 191                    local_hex_string_custom
 192                      ((unsigned long) asect->filepos, "08l"));
 193   printf_filtered (": %s", bfd_section_name (abfd, asect));
 194
 195   if (flags & SEC_ALLOC)
 196     printf_filtered (" ALLOC");
 197   if (flags & SEC_LOAD)
 198     printf_filtered (" LOAD");
 199   if (flags & SEC_RELOC)
 200     printf_filtered (" RELOC");
 201   if (flags & SEC_READONLY)
 202     printf_filtered (" READONLY");
 203   if (flags & SEC_CODE)
 204     printf_filtered (" CODE");
 205   if (flags & SEC_DATA)
 206     printf_filtered (" DATA");
 207   if (flags & SEC_ROM)
 208     printf_filtered (" ROM");
 209   if (flags & SEC_CONSTRUCTOR)
 210     printf_filtered (" CONSTRUCTOR");
 211   if (flags & SEC_HAS_CONTENTS)
 212     printf_filtered (" HAS_CONTENTS");
 213   if (flags & SEC_NEVER_LOAD)
 214     printf_filtered (" NEVER_LOAD");
 215   if (flags & SEC_COFF_SHARED_LIBRARY)
 216     printf_filtered (" COFF_SHARED_LIBRARY");
 217   if (flags & SEC_IS_COMMON)
 218     printf_filtered (" IS_COMMON");
 219
 220   printf_filtered ("\n");
 221 }
 222
 223 /* ARGSUSED */
 224 static void
 225 maintenance_info_sections (arg, from_tty)
 226      char *arg;
 227      int from_tty;
 228 {
 229   if (exec_bfd)
 230     {
 231       printf_filtered ("Exec file:\n");
 232       printf_filtered ("    `%s', ", bfd_get_filename(exec_bfd));
 233       wrap_here ("        ");
 234       printf_filtered ("file type %s.\n", bfd_get_target(exec_bfd));
 235       bfd_map_over_sections(exec_bfd, print_section_table, 0);
 236     }
 237
 238   if (core_bfd)
 239     {
 240       printf_filtered ("Core file:\n");
 241       printf_filtered ("    `%s', ", bfd_get_filename(core_bfd));
 242       wrap_here ("        ");
 243       printf_filtered ("file type %s.\n", bfd_get_target(core_bfd));
 244       bfd_map_over_sections(core_bfd, print_section_table, 0);
 245     }
 246 }
 247
 248 /* ARGSUSED */
 249 void
 250 maintenance_print_statistics (args, from_tty)
 251      char *args;
 252      int from_tty;
 253 {
 254   print_objfile_statistics ();
 255   print_symbol_bcache_statistics ();
 256 }
 257
 258 /* The "maintenance print" command is defined as a prefix, with allow_unknown
 259    0.  Therefore, its own definition is called only for "maintenance print"
 260    with no args.  */
 261
 262 /* ARGSUSED */
 263 static void
 264 maintenance_print_command (arg, from_tty)
 265      char *arg;
 266      int from_tty;
 267 {
 268   printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n");
 269   help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout);
 270 }
 271
 272 #endif  /* MAINTENANCE_CMDS */
 273
 274 void
 275 _initialize_maint_cmds ()
 276 {
 277 #if MAINTENANCE_CMDS    /* Entire file goes away if not including maint cmds */
 278   add_prefix_cmd ("maintenance", class_maintenance, maintenance_command,
 279                   "Commands for use by GDB maintainers.\n\
 280 Includes commands to dump specific internal GDB structures in\n\
 281 a human readable form, to cause GDB to deliberately dump core,\n\
 282 to test internal functions such as the C++ demangler, etc.",
 283                   &maintenancelist, "maintenance ", 0,
 284                   &cmdlist);
 285
 286   add_com_alias ("mt", "maintenance", class_maintenance, 1);
 287
 288   add_prefix_cmd ("info", class_maintenance, maintenance_info_command,
 289                   "Commands for showing internal info about the program being debugged.",
 290                   &maintenanceinfolist, "maintenance info ", 0,
 291                   &maintenancelist);
 292
 293   add_cmd ("sections", class_maintenance, maintenance_info_sections,
 294            "List the BFD sections of the exec and core files.",
 295            &maintenanceinfolist);
 296
 297   add_prefix_cmd ("print", class_maintenance, maintenance_print_command,
 298                   "Maintenance command for printing GDB internal state.",
 299                   &maintenanceprintlist, "maintenance print ", 0,
 300                   &maintenancelist);
 301
 302   add_cmd ("dump-me", class_maintenance, maintenance_dump_me,
 303            "Get fatal error; make debugger dump its core.\n\
 304 GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\
 305 itself a SIGQUIT signal.",
 306            &maintenancelist);
 307
 308   add_cmd ("demangle", class_maintenance, maintenance_demangle,
 309            "Demangle a C++ mangled name.\n\
 310 Call internal GDB demangler routine to demangle a C++ link name\n\
 311 and prints the result.",
 312            &maintenancelist);
 313
 314   add_cmd ("time", class_maintenance, maintenance_time_display,
 315            "Set the display of time usage.\n\
 316 If nonzero, will cause the execution time for each command to be\n\
 317 displayed, following the command's output.",
 318            &maintenancelist);
 319
 320   add_cmd ("space", class_maintenance, maintenance_space_display,
 321            "Set the display of space usage.\n\
 322 If nonzero, will cause the execution space for each command to be\n\
 323 displayed, following the command's output.",
 324            &maintenancelist);
 325
 326   add_cmd ("type", class_maintenance, maintenance_print_type,
 327            "Print a type chain for a given symbol.\n\
 328 For each node in a type chain, print the raw data for each member of\n\
 329 the type structure, and the interpretation of the data.",
 330            &maintenanceprintlist);
 331
 332   add_cmd ("symbols", class_maintenance, maintenance_print_symbols,
 333            "Print dump of current symbol definitions.\n\
 334 Entries in the full symbol table are dumped to file OUTFILE.\n\
 335 If a SOURCE file is specified, dump only that file's symbols.",
 336            &maintenanceprintlist);
 337
 338   add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols,
 339            "Print dump of current minimal symbol definitions.\n\
 340 Entries in the minimal symbol table are dumped to file OUTFILE.\n\
 341 If a SOURCE file is specified, dump only that file's minimal symbols.",
 342            &maintenanceprintlist);
 343
 344   add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols,
 345            "Print dump of current partial symbol definitions.\n\
 346 Entries in the partial symbol table are dumped to file OUTFILE.\n\
 347 If a SOURCE file is specified, dump only that file's partial symbols.",
 348            &maintenanceprintlist);
 349
 350   add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
 351            "Print dump of current object file definitions.",
 352            &maintenanceprintlist);
 353
 354   add_cmd ("statistics", class_maintenance, maintenance_print_statistics,
 355            "Print statistics about internal gdb state.",
 356            &maintenanceprintlist);
 357
 358   add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
 359            "Check consistency of psymtabs and symtabs.",
 360            &maintenancelist);
 361
 362   add_show_from_set (
 363     add_set_cmd ("watchdog", class_maintenance, var_zinteger, (char *)&watchdog,
 364                  "Set watchdog timer.\n\
 365 When non-zero, this timeout is used instead of waiting forever for a target to\n\
 366 finish a low-level step or continue operation.  If the specified amount of time\n\
 367 passes without a response from the target, an error occurs.", &setlist),
 368                      &showlist);
 369 #endif  /* MAINTENANCE_CMDS */
 370 }