diff options
Diffstat (limited to 'gdb/maint.c')
| -rw-r--r-- | gdb/maint.c | 449 |
1 files changed, 449 insertions, 0 deletions
diff --git a/gdb/maint.c b/gdb/maint.c new file mode 100644 index 00000000000..cf4ceb7e9a1 --- /dev/null +++ b/gdb/maint.c @@ -0,0 +1,449 @@ +/* Support for GDB maintenance commands. + Copyright 1992, 1993, 1994 Free Software Foundation, Inc. + Written by Fred Fish at Cygnus Support. + +This file is part of GDB. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + + +#include "defs.h" + +#if MAINTENANCE_CMDS /* Entire rest of file goes away if not including maint cmds */ + +#include <ctype.h> +#include <signal.h> +#include "command.h" +#include "gdbcmd.h" +#include "symtab.h" +#include "gdbtypes.h" +#include "demangle.h" +#include "gdbcore.h" +#include "expression.h" /* For language.h */ +#include "language.h" +#include "symfile.h" +#include "objfiles.h" +#include "value.h" + +#ifdef HAVE_UNISTD_H +#include <unistd.h> +#endif + +static void maintenance_command PARAMS ((char *, int)); + +static void maintenance_dump_me PARAMS ((char *, int)); + +static void maintenance_demangle PARAMS ((char *, int)); + +static void maintenance_time_display PARAMS ((char *, int)); + +static void maintenance_space_display PARAMS ((char *, int)); + +static void maintenance_info_command PARAMS ((char *, int)); + +static void print_section_table PARAMS ((bfd *, asection *, PTR)); + +static void maintenance_info_sections PARAMS ((char *, int)); + +static void maintenance_print_command PARAMS ((char *, int)); + +/* Set this to the maximum number of seconds to wait instead of waiting forever + in target_wait(). If this timer times out, then it generates an error and + the command is aborted. This replaces most of the need for timeouts in the + GDB test suite, and makes it possible to distinguish between a hung target + and one with slow communications. */ + +int watchdog = 0; + +/* + +LOCAL FUNCTION + + maintenance_command -- access the maintenance subcommands + +SYNOPSIS + + void maintenance_command (char *args, int from_tty) + +DESCRIPTION + +*/ + +static void +maintenance_command (args, from_tty) + char *args; + int from_tty; +{ + printf_unfiltered ("\"maintenance\" must be followed by the name of a maintenance command.\n"); + help_list (maintenancelist, "maintenance ", -1, gdb_stdout); +} + +#ifndef _WIN32 +/* ARGSUSED */ +static void +maintenance_dump_me (args, from_tty) + char *args; + int from_tty; +{ + if (query ("Should GDB dump core? ")) + { + signal (SIGQUIT, SIG_DFL); + kill (getpid (), SIGQUIT); + } +} +#endif + +/* Someday we should allow demangling for things other than just + explicit strings. For example, we might want to be able to + specify the address of a string in either GDB's process space + or the debuggee's process space, and have gdb fetch and demangle + that string. If we have a char* pointer "ptr" that points to + a string, we might want to be able to given just the name and + have GDB demangle and print what it points to, etc. (FIXME) */ + +static void +maintenance_demangle (args, from_tty) + char *args; + int from_tty; +{ + char *demangled; + + if (args == NULL || *args == '\0') + { + printf_unfiltered ("\"maintenance demangle\" takes an argument to demangle.\n"); + } + else + { + demangled = cplus_demangle (args, DMGL_ANSI | DMGL_PARAMS); + if (demangled != NULL) + { + printf_unfiltered ("%s\n", demangled); + free (demangled); + } + else + { + printf_unfiltered ("Can't demangle \"%s\"\n", args); + } + } +} + +static void +maintenance_time_display (args, from_tty) + char *args; + int from_tty; +{ + extern int display_time; + + if (args == NULL || *args == '\0') + printf_unfiltered ("\"maintenance time\" takes a numeric argument.\n"); + else + display_time = strtol (args, NULL, 10); +} + +static void +maintenance_space_display (args, from_tty) + char *args; + int from_tty; +{ + extern int display_space; + + if (args == NULL || *args == '\0') + printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n"); + else + display_space = strtol (args, NULL, 10); +} + +/* The "maintenance info" command is defined as a prefix, with allow_unknown 0. + Therefore, its own definition is called only for "maintenance info" with + no args. */ + +/* ARGSUSED */ +static void +maintenance_info_command (arg, from_tty) + char *arg; + int from_tty; +{ + printf_unfiltered ("\"maintenance info\" must be followed by the name of an info command.\n"); + help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout); +} + +static void +print_section_table (abfd, asect, ignore) + bfd *abfd; + asection *asect; + PTR ignore; +{ + flagword flags; + + flags = bfd_get_section_flags (abfd, asect); + + /* FIXME-32x64: Need print_address_numeric with field width. */ + printf_filtered (" %s", + local_hex_string_custom + ((unsigned long) bfd_section_vma (abfd, asect), "08l")); + printf_filtered ("->%s", + local_hex_string_custom + ((unsigned long) (bfd_section_vma (abfd, asect) + + bfd_section_size (abfd, asect)), + "08l")); + printf_filtered (" at %s", + local_hex_string_custom + ((unsigned long) asect->filepos, "08l")); + printf_filtered (": %s", bfd_section_name (abfd, asect)); + + if (flags & SEC_ALLOC) + printf_filtered (" ALLOC"); + if (flags & SEC_LOAD) + printf_filtered (" LOAD"); + if (flags & SEC_RELOC) + printf_filtered (" RELOC"); + if (flags & SEC_READONLY) + printf_filtered (" READONLY"); + if (flags & SEC_CODE) + printf_filtered (" CODE"); + if (flags & SEC_DATA) + printf_filtered (" DATA"); + if (flags & SEC_ROM) + printf_filtered (" ROM"); + if (flags & SEC_CONSTRUCTOR) + printf_filtered (" CONSTRUCTOR"); + if (flags & SEC_HAS_CONTENTS) + printf_filtered (" HAS_CONTENTS"); + if (flags & SEC_NEVER_LOAD) + printf_filtered (" NEVER_LOAD"); + if (flags & SEC_COFF_SHARED_LIBRARY) + printf_filtered (" COFF_SHARED_LIBRARY"); + if (flags & SEC_IS_COMMON) + printf_filtered (" IS_COMMON"); + + printf_filtered ("\n"); +} + +/* ARGSUSED */ +static void +maintenance_info_sections (arg, from_tty) + char *arg; + int from_tty; +{ + if (exec_bfd) + { + printf_filtered ("Exec file:\n"); + printf_filtered (" `%s', ", bfd_get_filename(exec_bfd)); + wrap_here (" "); + printf_filtered ("file type %s.\n", bfd_get_target(exec_bfd)); + bfd_map_over_sections(exec_bfd, print_section_table, 0); + } + + if (core_bfd) + { + printf_filtered ("Core file:\n"); + printf_filtered (" `%s', ", bfd_get_filename(core_bfd)); + wrap_here (" "); + printf_filtered ("file type %s.\n", bfd_get_target(core_bfd)); + bfd_map_over_sections(core_bfd, print_section_table, 0); + } +} + +/* ARGSUSED */ +void +maintenance_print_statistics (args, from_tty) + char *args; + int from_tty; +{ + print_objfile_statistics (); + print_symbol_bcache_statistics (); +} + +/* The "maintenance print" command is defined as a prefix, with allow_unknown + 0. Therefore, its own definition is called only for "maintenance print" + with no args. */ + +/* ARGSUSED */ +static void +maintenance_print_command (arg, from_tty) + char *arg; + int from_tty; +{ + printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n"); + help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout); +} + +/* The "maintenance translate-address" command converts a section and address + to a symbol. This can be called in two ways: + maintenance translate-address <secname> <addr> + or maintenance translate-address <addr> +*/ + +static void +maintenance_translate_address (arg, from_tty) + char *arg; + int from_tty; +{ + CORE_ADDR address; + asection *sect; + char *p; + struct minimal_symbol *sym; + struct objfile *objfile; + + if (arg == NULL || *arg == 0) + error ("requires argument (address or section + address)"); + + sect = NULL; + p = arg; + + if (!isdigit (*p)) + { /* See if we have a valid section name */ + while (*p && !isspace (*p)) /* Find end of section name */ + p++; + if (*p == '\000') /* End of command? */ + error ("Need to specify <section-name> and <address>"); + *p++ = '\000'; + while (isspace (*p)) p++; /* Skip whitespace */ + + ALL_OBJFILES (objfile) + { + sect = bfd_get_section_by_name (objfile->obfd, arg); + if (sect != NULL) + break; + } + + if (!sect) + error ("Unknown section %s.", arg); + } + + address = parse_and_eval_address (p); + + if (sect) + sym = lookup_minimal_symbol_by_pc_section (address, sect); + else + sym = lookup_minimal_symbol_by_pc (address); + + if (sym) + printf_filtered ("%s+%u\n", + SYMBOL_SOURCE_NAME (sym), + address - SYMBOL_VALUE_ADDRESS (sym)); + else if (sect) + printf_filtered ("no symbol at %s:0x%08x\n", sect->name, address); + else + printf_filtered ("no symbol at 0x%08x\n", address); + + return; +} + +#endif /* MAINTENANCE_CMDS */ + +void +_initialize_maint_cmds () +{ +#if MAINTENANCE_CMDS /* Entire file goes away if not including maint cmds */ + add_prefix_cmd ("maintenance", class_maintenance, maintenance_command, + "Commands for use by GDB maintainers.\n\ +Includes commands to dump specific internal GDB structures in\n\ +a human readable form, to cause GDB to deliberately dump core,\n\ +to test internal functions such as the C++ demangler, etc.", + &maintenancelist, "maintenance ", 0, + &cmdlist); + + add_com_alias ("mt", "maintenance", class_maintenance, 1); + + add_prefix_cmd ("info", class_maintenance, maintenance_info_command, + "Commands for showing internal info about the program being debugged.", + &maintenanceinfolist, "maintenance info ", 0, + &maintenancelist); + + add_cmd ("sections", class_maintenance, maintenance_info_sections, + "List the BFD sections of the exec and core files.", + &maintenanceinfolist); + + add_prefix_cmd ("print", class_maintenance, maintenance_print_command, + "Maintenance command for printing GDB internal state.", + &maintenanceprintlist, "maintenance print ", 0, + &maintenancelist); + +#ifndef _WIN32 + add_cmd ("dump-me", class_maintenance, maintenance_dump_me, + "Get fatal error; make debugger dump its core.\n\ +GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\ +itself a SIGQUIT signal.", + &maintenancelist); +#endif + + add_cmd ("demangle", class_maintenance, maintenance_demangle, + "Demangle a C++ mangled name.\n\ +Call internal GDB demangler routine to demangle a C++ link name\n\ +and prints the result.", + &maintenancelist); + + add_cmd ("time", class_maintenance, maintenance_time_display, + "Set the display of time usage.\n\ +If nonzero, will cause the execution time for each command to be\n\ +displayed, following the command's output.", + &maintenancelist); + + add_cmd ("space", class_maintenance, maintenance_space_display, + "Set the display of space usage.\n\ +If nonzero, will cause the execution space for each command to be\n\ +displayed, following the command's output.", + &maintenancelist); + + add_cmd ("type", class_maintenance, maintenance_print_type, + "Print a type chain for a given symbol.\n\ +For each node in a type chain, print the raw data for each member of\n\ +the type structure, and the interpretation of the data.", + &maintenanceprintlist); + + add_cmd ("symbols", class_maintenance, maintenance_print_symbols, + "Print dump of current symbol definitions.\n\ +Entries in the full symbol table are dumped to file OUTFILE.\n\ +If a SOURCE file is specified, dump only that file's symbols.", + &maintenanceprintlist); + + add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols, + "Print dump of current minimal symbol definitions.\n\ +Entries in the minimal symbol table are dumped to file OUTFILE.\n\ +If a SOURCE file is specified, dump only that file's minimal symbols.", + &maintenanceprintlist); + + add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols, + "Print dump of current partial symbol definitions.\n\ +Entries in the partial symbol table are dumped to file OUTFILE.\n\ +If a SOURCE file is specified, dump only that file's partial symbols.", + &maintenanceprintlist); + + add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles, + "Print dump of current object file definitions.", + &maintenanceprintlist); + + add_cmd ("statistics", class_maintenance, maintenance_print_statistics, + "Print statistics about internal gdb state.", + &maintenanceprintlist); + + add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs, + "Check consistency of psymtabs and symtabs.", + &maintenancelist); + + add_cmd ("translate-address", class_maintenance, maintenance_translate_address, + "Translate a section name and address to a symbol.", + &maintenancelist); + + add_show_from_set ( + add_set_cmd ("watchdog", class_maintenance, var_zinteger, (char *)&watchdog, + "Set watchdog timer.\n\ +When non-zero, this timeout is used instead of waiting forever for a target to\n\ +finish a low-level step or continue operation. If the specified amount of time\n\ +passes without a response from the target, an error occurs.", &setlist), + &showlist); +#endif /* MAINTENANCE_CMDS */ +} |