gdb/maint.c

   1 /* Support for GDB maintenance commands.
   2    Copyright (C) 1992 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   printf_filtered ("    %s",
 141                    local_hex_string_custom
 142                      ((unsigned long) bfd_section_vma (abfd, asect), "08l"));
 143   printf_filtered ("->%s",
 144                    local_hex_string_custom
 145                      ((unsigned long) (bfd_section_vma (abfd, asect)
 146                                        + bfd_section_size (abfd, asect)),
 147                       "08l"));
 148   printf_filtered (" at %s",
 149                    local_hex_string_custom
 150                      ((unsigned long) asect->filepos, "08l"));
 151   printf_filtered (": %s", bfd_section_name (abfd, asect));
 152
 153   if (flags & SEC_ALLOC)
 154     printf_filtered (" ALLOC");
 155   if (flags & SEC_LOAD)
 156     printf_filtered (" LOAD");
 157   if (flags & SEC_RELOC)
 158     printf_filtered (" RELOC");
 159   if (flags & SEC_READONLY)
 160     printf_filtered (" READONLY");
 161   if (flags & SEC_CODE)
 162     printf_filtered (" CODE");
 163   if (flags & SEC_DATA)
 164     printf_filtered (" DATA");
 165   if (flags & SEC_ROM)
 166     printf_filtered (" ROM");
 167   if (flags & SEC_CONSTRUCTOR)
 168     printf_filtered (" CONSTRUCTOR");
 169   if (flags & SEC_HAS_CONTENTS)
 170     printf_filtered (" HAS_CONTENTS");
 171   if (flags & SEC_NEVER_LOAD)
 172     printf_filtered (" NEVER_LOAD");
 173   if (flags & SEC_SHARED_LIBRARY)
 174     printf_filtered (" SHARED_LIBRARY");
 175   if (flags & SEC_IS_COMMON)
 176     printf_filtered (" IS_COMMON");
 177
 178   printf_filtered ("\n");
 179 }
 180
 181 /* ARGSUSED */
 182 static void
 183 maintenance_info_sections (arg, from_tty)
 184      char *arg;
 185      int from_tty;
 186 {
 187   if (exec_bfd)
 188     {
 189       printf_filtered ("Exec file:\n");
 190       printf_filtered ("    `%s', ", bfd_get_filename(exec_bfd));
 191       wrap_here ("        ");
 192       printf_filtered ("file type %s.\n", bfd_get_target(exec_bfd));
 193       bfd_map_over_sections(exec_bfd, print_section_table, 0);
 194     }
 195
 196   if (core_bfd)
 197     {
 198       printf_filtered ("Core file:\n");
 199       printf_filtered ("    `%s', ", bfd_get_filename(core_bfd));
 200       wrap_here ("        ");
 201       printf_filtered ("file type %s.\n", bfd_get_target(core_bfd));
 202       bfd_map_over_sections(core_bfd, print_section_table, 0);
 203     }
 204 }
 205
 206 /* The "maintenance print" command is defined as a prefix, with allow_unknown
 207    0.  Therefore, its own definition is called only for "maintenance print"
 208    with no args.  */
 209
 210 /* ARGSUSED */
 211 static void
 212 maintenance_print_command (arg, from_tty)
 213      char *arg;
 214      int from_tty;
 215 {
 216   printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n");
 217   help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout);
 218 }
 219
 220 #endif  /* MAINTENANCE_CMDS */
 221
 222 void
 223 _initialize_maint_cmds ()
 224 {
 225 #if MAINTENANCE_CMDS    /* Entire file goes away if not including maint cmds */
 226   add_prefix_cmd ("maintenance", class_maintenance, maintenance_command,
 227                   "Commands for use by GDB maintainers.\n\
 228 Includes commands to dump specific internal GDB structures in\n\
 229 a human readable form, to cause GDB to deliberately dump core,\n\
 230 to test internal functions such as the C++ demangler, etc.",
 231                   &maintenancelist, "maintenance ", 0,
 232                   &cmdlist);
 233
 234   add_com_alias ("mt", "maintenance", class_maintenance, 1);
 235
 236   add_prefix_cmd ("info", class_maintenance, maintenance_info_command,
 237                   "Commands for showing internal info about the program being debugged.",
 238                   &maintenanceinfolist, "maintenance info ", 0,
 239                   &maintenancelist);
 240
 241   add_cmd ("sections", class_maintenance, maintenance_info_sections,
 242            "List the BFD sections of the exec and core files.",
 243            &maintenanceinfolist);
 244
 245   add_prefix_cmd ("print", class_maintenance, maintenance_print_command,
 246                   "Maintenance command for printing GDB internal state.",
 247                   &maintenanceprintlist, "maintenance print ", 0,
 248                   &maintenancelist);
 249
 250   add_cmd ("dump-me", class_maintenance, maintenance_dump_me,
 251            "Get fatal error; make debugger dump its core.\n\
 252 GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\
 253 itself a SIGQUIT signal.",
 254            &maintenancelist);
 255
 256   add_cmd ("demangle", class_maintenance, maintenance_demangle,
 257            "Demangle a C++ mangled name.\n\
 258 Call internal GDB demangler routine to demangle a C++ link name\n\
 259 and prints the result.",
 260            &maintenancelist);
 261
 262   add_cmd ("type", class_maintenance, maintenance_print_type,
 263            "Print a type chain for a given symbol.\n\
 264 For each node in a type chain, print the raw data for each member of\n\
 265 the type structure, and the interpretation of the data.",
 266            &maintenanceprintlist);
 267
 268   add_cmd ("symbols", class_maintenance, maintenance_print_symbols,
 269            "Print dump of current symbol definitions.\n\
 270 Entries in the full symbol table are dumped to file OUTFILE.\n\
 271 If a SOURCE file is specified, dump only that file's symbols.",
 272            &maintenanceprintlist);
 273
 274   add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols,
 275            "Print dump of current minimal symbol definitions.\n\
 276 Entries in the minimal symbol table are dumped to file OUTFILE.\n\
 277 If a SOURCE file is specified, dump only that file's minimal symbols.",
 278            &maintenanceprintlist);
 279
 280   add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols,
 281            "Print dump of current partial symbol definitions.\n\
 282 Entries in the partial symbol table are dumped to file OUTFILE.\n\
 283 If a SOURCE file is specified, dump only that file's partial symbols.",
 284            &maintenanceprintlist);
 285
 286   add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
 287            "Print dump of current object file definitions.",
 288            &maintenanceprintlist);
 289 #endif  /* MAINTENANCE_CMDS */
 290 }