gdb/maint.c

   1 /* Support for GDB maintenance commands.
   2    Copyright (C) 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  20
  21
  22 #include "defs.h"
  23
  24 #if MAINTENANCE_CMDS    /* Entire 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
  36 static void
  37 maintenance_command PARAMS ((char *, int));
  38
  39 static void
  40 maintenance_dump_me PARAMS ((char *, int));
  41
  42 static void
  43 maintenance_demangle PARAMS ((char *, int));
  44
  45 /*
  46
  47 LOCAL FUNCTION
  48
  49         maintenance_command -- access the maintenance subcommands
  50
  51 SYNOPSIS
  52
  53         void maintenance_command (char *args, int from_tty)
  54
  55 DESCRIPTION
  56
  57 */
  58
  59 static void
  60 maintenance_command (args, from_tty)
  61      char *args;
  62      int from_tty;
  63 {
  64   printf_unfiltered ("\"maintenance\" must be followed by the name of a maintenance command.\n");
  65   help_list (maintenancelist, "maintenance ", -1, gdb_stdout);
  66 }
  67
  68
  69 /* ARGSUSED */
  70 static void
  71 maintenance_dump_me (args, from_tty)
  72      char *args;
  73      int from_tty;
  74 {
  75   if (query ("Should GDB dump core? "))
  76     {
  77       signal (SIGQUIT, SIG_DFL);
  78       kill (getpid (), SIGQUIT);
  79     }
  80 }
  81
  82 /*  Someday we should allow demangling for things other than just
  83     explicit strings.  For example, we might want to be able to
  84     specify the address of a string in either GDB's process space
  85     or the debuggee's process space, and have gdb fetch and demangle
  86     that string.  If we have a char* pointer "ptr" that points to
  87     a string, we might want to be able to given just the name and
  88     have GDB demangle and print what it points to, etc.  (FIXME) */
  89
  90 static void
  91 maintenance_demangle (args, from_tty)
  92      char *args;
  93      int from_tty;
  94 {
  95   char *demangled;
  96
  97   if (args == NULL || *args == '\0')
  98     {
  99       printf_unfiltered ("\"maintenance demangle\" takes an argument to demangle.\n");
 100     }
 101   else
 102     {
 103       demangled = cplus_demangle (args, DMGL_ANSI | DMGL_PARAMS);
 104       if (demangled != NULL)
 105         {
 106           printf_unfiltered ("%s\n", demangled);
 107           free (demangled);
 108         }
 109       else
 110         {
 111           printf_unfiltered ("Can't demangle \"%s\"\n", args);
 112         }
 113     }
 114 }
 115
 116 /* The "maintenance info" command is defined as a prefix, with allow_unknown 0.
 117    Therefore, its own definition is called only for "maintenance info" with
 118    no args.  */
 119
 120 /* ARGSUSED */
 121 static void
 122 maintenance_info_command (arg, from_tty)
 123      char *arg;
 124      int from_tty;
 125 {
 126   printf_unfiltered ("\"maintenance info\" must be followed by the name of an info command.\n");
 127   help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout);
 128 }
 129
 130 static void
 131 print_section_table (abfd, asect, ignore)
 132      bfd *abfd;
 133      asection *asect;
 134      PTR ignore;
 135 {
 136   flagword flags;
 137
 138   flags = bfd_get_section_flags (abfd, asect);
 139
 140   /* FIXME-32x64: Need print_address_numeric with field width.  */
 141   printf_filtered ("    %s",
 142                    local_hex_string_custom
 143                      ((unsigned long) bfd_section_vma (abfd, asect), "08l"));
 144   printf_filtered ("->%s",
 145                    local_hex_string_custom
 146                      ((unsigned long) (bfd_section_vma (abfd, asect)
 147                                        + bfd_section_size (abfd, asect)),
 148                       "08l"));
 149   printf_filtered (" at %s",
 150                    local_hex_string_custom
 151                      ((unsigned long) asect->filepos, "08l"));
 152   printf_filtered (": %s", bfd_section_name (abfd, asect));
 153
 154   if (flags & SEC_ALLOC)
 155     printf_filtered (" ALLOC");
 156   if (flags & SEC_LOAD)
 157     printf_filtered (" LOAD");
 158   if (flags & SEC_RELOC)
 159     printf_filtered (" RELOC");
 160   if (flags & SEC_READONLY)
 161     printf_filtered (" READONLY");
 162   if (flags & SEC_CODE)
 163     printf_filtered (" CODE");
 164   if (flags & SEC_DATA)
 165     printf_filtered (" DATA");
 166   if (flags & SEC_ROM)
 167     printf_filtered (" ROM");
 168   if (flags & SEC_CONSTRUCTOR)
 169     printf_filtered (" CONSTRUCTOR");
 170   if (flags & SEC_HAS_CONTENTS)
 171     printf_filtered (" HAS_CONTENTS");
 172   if (flags & SEC_NEVER_LOAD)
 173     printf_filtered (" NEVER_LOAD");
 174   if (flags & SEC_COFF_SHARED_LIBRARY)
 175     printf_filtered (" COFF_SHARED_LIBRARY");
 176   if (flags & SEC_IS_COMMON)
 177     printf_filtered (" IS_COMMON");
 178
 179   printf_filtered ("\n");
 180 }
 181
 182 /* ARGSUSED */
 183 static void
 184 maintenance_info_sections (arg, from_tty)
 185      char *arg;
 186      int from_tty;
 187 {
 188   if (exec_bfd)
 189     {
 190       printf_filtered ("Exec file:\n");
 191       printf_filtered ("    `%s', ", bfd_get_filename(exec_bfd));
 192       wrap_here ("        ");
 193       printf_filtered ("file type %s.\n", bfd_get_target(exec_bfd));
 194       bfd_map_over_sections(exec_bfd, print_section_table, 0);
 195     }
 196
 197   if (core_bfd)
 198     {
 199       printf_filtered ("Core file:\n");
 200       printf_filtered ("    `%s', ", bfd_get_filename(core_bfd));
 201       wrap_here ("        ");
 202       printf_filtered ("file type %s.\n", bfd_get_target(core_bfd));
 203       bfd_map_over_sections(core_bfd, print_section_table, 0);
 204     }
 205 }
 206
 207 /* The "maintenance print" command is defined as a prefix, with allow_unknown
 208    0.  Therefore, its own definition is called only for "maintenance print"
 209    with no args.  */
 210
 211 /* ARGSUSED */
 212 static void
 213 maintenance_print_command (arg, from_tty)
 214      char *arg;
 215      int from_tty;
 216 {
 217   printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n");
 218   help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout);
 219 }
 220
 221 #endif  /* MAINTENANCE_CMDS */
 222
 223 void
 224 _initialize_maint_cmds ()
 225 {
 226 #if MAINTENANCE_CMDS    /* Entire file goes away if not including maint cmds */
 227   add_prefix_cmd ("maintenance", class_maintenance, maintenance_command,
 228                   "Commands for use by GDB maintainers.\n\
 229 Includes commands to dump specific internal GDB structures in\n\
 230 a human readable form, to cause GDB to deliberately dump core,\n\
 231 to test internal functions such as the C++ demangler, etc.",
 232                   &maintenancelist, "maintenance ", 0,
 233                   &cmdlist);
 234
 235   add_com_alias ("mt", "maintenance", class_maintenance, 1);
 236
 237   add_prefix_cmd ("info", class_maintenance, maintenance_info_command,
 238                   "Commands for showing internal info about the program being debugged.",
 239                   &maintenanceinfolist, "maintenance info ", 0,
 240                   &maintenancelist);
 241
 242   add_cmd ("sections", class_maintenance, maintenance_info_sections,
 243            "List the BFD sections of the exec and core files.",
 244            &maintenanceinfolist);
 245
 246   add_prefix_cmd ("print", class_maintenance, maintenance_print_command,
 247                   "Maintenance command for printing GDB internal state.",
 248                   &maintenanceprintlist, "maintenance print ", 0,
 249                   &maintenancelist);
 250
 251   add_cmd ("dump-me", class_maintenance, maintenance_dump_me,
 252            "Get fatal error; make debugger dump its core.\n\
 253 GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\
 254 itself a SIGQUIT signal.",
 255            &maintenancelist);
 256
 257   add_cmd ("demangle", class_maintenance, maintenance_demangle,
 258            "Demangle a C++ mangled name.\n\
 259 Call internal GDB demangler routine to demangle a C++ link name\n\
 260 and prints the result.",
 261            &maintenancelist);
 262
 263   add_cmd ("type", class_maintenance, maintenance_print_type,
 264            "Print a type chain for a given symbol.\n\
 265 For each node in a type chain, print the raw data for each member of\n\
 266 the type structure, and the interpretation of the data.",
 267            &maintenanceprintlist);
 268
 269   add_cmd ("symbols", class_maintenance, maintenance_print_symbols,
 270            "Print dump of current symbol definitions.\n\
 271 Entries in the full symbol table are dumped to file OUTFILE.\n\
 272 If a SOURCE file is specified, dump only that file's symbols.",
 273            &maintenanceprintlist);
 274
 275   add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols,
 276            "Print dump of current minimal symbol definitions.\n\
 277 Entries in the minimal symbol table are dumped to file OUTFILE.\n\
 278 If a SOURCE file is specified, dump only that file's minimal symbols.",
 279            &maintenanceprintlist);
 280
 281   add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols,
 282            "Print dump of current partial symbol definitions.\n\
 283 Entries in the partial symbol table are dumped to file OUTFILE.\n\
 284 If a SOURCE file is specified, dump only that file's partial symbols.",
 285            &maintenanceprintlist);
 286
 287   add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
 288            "Print dump of current object file definitions.",
 289            &maintenanceprintlist);
 290
 291   add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
 292            "Check consistency of psymtabs and symtabs.",
 293            &maintenancelist);
 294 #endif  /* MAINTENANCE_CMDS */
 295 }