b9580b812c
Except for the two m32r modules, this checkin is for
overlay support.
* blockframe.c: blockvector_for_pc_sect(), block_for_pc_sect(),
find_pc_sect_function(), find_pc_sect_partial_function(): new
functions for debugging overlays; pc without section is ambiguous.
* breakpoint.[ch]: add section pointer to breakpoint struct;
add section argument to check_duplicates(); check section as well
as pc in [breakpoint_here_p(), breakpoint_inserted_here_p(),
breakpoint_thread_match(), bpstat_stop_status()];
add section argument to describe_other_breakpoints();
use INIT_SAL() macro to zero-out new sal structures;
make resolve_sal_pc() fix up the sal's section as well as its pc;
match on section + pc in clear_command() and delete_breakpoint();
account for overlay sections in insert_breakpoints(),
remove_breakpoint() and breakpoint_re_set_one();
all this to support overlays where a PC is not unique.
* exec.c: change xfer_memory() to handle overlay sections.
* findvar.c: change read_var_value() to handle overlay sections.
* frame.h: declaration for block_for_pc_sect() [blockframe.c].
* infcmd.c: jump_command() warns against jumping into an overlay
that's not in memory. Also use INIT_SAL() to initialize sals.
* infrun.c: wait_for_inferior() sets a flag to invalidate cached
overlay state information; Also use INIT_SAL() to init sals.
* m32r-rom.c: modify load routines to use LMA instead of VMA.
* m32r-stub.c: mask exit value down to 8 bits; screen out any
memory read/writes in the range 600000 to a00000, and ff680000
to ff800000 (hangs because nothing is mapped there); fix strcpy().
* maint.c: maintenance command "translate-address" supports overlays.
* minsyms.c: lookup_minimal_symbol_by_pc_sect() supports overlays.
* objfiles.[ch]: add ovly_mapped field to the obj_section struct;
this constitutes gdb's internal overlay mapping table. Add macro
ALL_OBJSECTIONS() to loop thru the obj_structs and look at overlays.
Add function find_pc_sect_section().
* printcmd.c: modify print_address_symbolic() with overlay smarts;
modify address_info() with overlay smarts; add function sym_info()
to support the INFO SYMBOL command (translate address to symbol(s));
modify disassemble_command() to work on unmapped overlays.
* source.c: use INIT_SAL() to initialize sals.
* symfile.[ch]: change generic_load() to use section's LMA address
instead of VMA address, for overlay sections.
Add numerous functions for finding a PC's section / overlay,
translating between VMA and LMA address ranges, determining if an
overlay section is mapped, etc. Add several user commands for
overlay debugging. Add support for a "generic" form of automatically
reading overlay mapping info from the inferior (based on the default
(simple) overlay manager which Cygnus provides as an example).
* symtab.[ch]: add functions find_pc_sect_symtab(),
find_pc_sect_psymtab(), find_pc_sect_psymbol(), find_pc_sect_line()
for lookup; modify lookup_symbol and decode_line_1() to use them;
modify find_function_start_sal() to account for overlay sections;
add macro INIT_SAL() for initializing struct symtab_and_line.
* target.c: fix a comment in the declaration of target_ops.
446 lines
13 KiB
C
446 lines
13 KiB
C
/* Support for GDB maintenance commands.
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Copyright 1992, 1993, 1994 Free Software Foundation, Inc.
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Written by Fred Fish at Cygnus Support.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#if MAINTENANCE_CMDS /* Entire rest of file goes away if not including maint cmds */
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#include <ctype.h>
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#include <signal.h>
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#include "command.h"
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#include "gdbcmd.h"
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#include "symtab.h"
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#include "gdbtypes.h"
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#include "demangle.h"
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#include "gdbcore.h"
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#include "expression.h" /* For language.h */
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#include "language.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "value.h"
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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static void maintenance_command PARAMS ((char *, int));
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static void maintenance_dump_me PARAMS ((char *, int));
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static void maintenance_demangle PARAMS ((char *, int));
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static void maintenance_time_display PARAMS ((char *, int));
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static void maintenance_space_display PARAMS ((char *, int));
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static void maintenance_info_command PARAMS ((char *, int));
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static void print_section_table PARAMS ((bfd *, asection *, PTR));
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static void maintenance_info_sections PARAMS ((char *, int));
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static void maintenance_print_command PARAMS ((char *, int));
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/* Set this to the maximum number of seconds to wait instead of waiting forever
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in target_wait(). If this timer times out, then it generates an error and
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the command is aborted. This replaces most of the need for timeouts in the
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GDB test suite, and makes it possible to distinguish between a hung target
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and one with slow communications. */
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int watchdog = 0;
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/*
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LOCAL FUNCTION
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maintenance_command -- access the maintenance subcommands
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SYNOPSIS
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void maintenance_command (char *args, int from_tty)
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DESCRIPTION
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*/
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static void
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maintenance_command (args, from_tty)
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char *args;
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int from_tty;
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{
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printf_unfiltered ("\"maintenance\" must be followed by the name of a maintenance command.\n");
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help_list (maintenancelist, "maintenance ", -1, gdb_stdout);
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}
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#ifndef _WIN32
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/* ARGSUSED */
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static void
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maintenance_dump_me (args, from_tty)
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char *args;
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int from_tty;
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{
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if (query ("Should GDB dump core? "))
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{
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signal (SIGQUIT, SIG_DFL);
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kill (getpid (), SIGQUIT);
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}
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}
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#endif
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/* Someday we should allow demangling for things other than just
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explicit strings. For example, we might want to be able to
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specify the address of a string in either GDB's process space
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or the debuggee's process space, and have gdb fetch and demangle
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that string. If we have a char* pointer "ptr" that points to
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a string, we might want to be able to given just the name and
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have GDB demangle and print what it points to, etc. (FIXME) */
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static void
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maintenance_demangle (args, from_tty)
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char *args;
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int from_tty;
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{
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char *demangled;
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if (args == NULL || *args == '\0')
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{
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printf_unfiltered ("\"maintenance demangle\" takes an argument to demangle.\n");
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}
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else
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{
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demangled = cplus_demangle (args, DMGL_ANSI | DMGL_PARAMS);
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if (demangled != NULL)
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{
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printf_unfiltered ("%s\n", demangled);
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free (demangled);
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}
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else
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{
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printf_unfiltered ("Can't demangle \"%s\"\n", args);
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}
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}
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}
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static void
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maintenance_time_display (args, from_tty)
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char *args;
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int from_tty;
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{
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extern int display_time;
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if (args == NULL || *args == '\0')
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printf_unfiltered ("\"maintenance time\" takes a numeric argument.\n");
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else
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display_time = strtol (args, NULL, 10);
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}
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static void
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maintenance_space_display (args, from_tty)
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char *args;
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int from_tty;
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{
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extern int display_space;
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if (args == NULL || *args == '\0')
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printf_unfiltered ("\"maintenance space\" takes a numeric argument.\n");
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else
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display_space = strtol (args, NULL, 10);
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}
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/* The "maintenance info" command is defined as a prefix, with allow_unknown 0.
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Therefore, its own definition is called only for "maintenance info" with
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no args. */
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/* ARGSUSED */
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static void
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maintenance_info_command (arg, from_tty)
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char *arg;
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int from_tty;
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{
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printf_unfiltered ("\"maintenance info\" must be followed by the name of an info command.\n");
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help_list (maintenanceinfolist, "maintenance info ", -1, gdb_stdout);
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}
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static void
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print_section_table (abfd, asect, ignore)
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bfd *abfd;
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asection *asect;
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PTR ignore;
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{
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flagword flags;
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flags = bfd_get_section_flags (abfd, asect);
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/* FIXME-32x64: Need print_address_numeric with field width. */
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printf_filtered (" %s",
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local_hex_string_custom
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((unsigned long) bfd_section_vma (abfd, asect), "08l"));
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printf_filtered ("->%s",
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local_hex_string_custom
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((unsigned long) (bfd_section_vma (abfd, asect)
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+ bfd_section_size (abfd, asect)),
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"08l"));
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printf_filtered (" at %s",
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local_hex_string_custom
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((unsigned long) asect->filepos, "08l"));
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printf_filtered (": %s", bfd_section_name (abfd, asect));
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if (flags & SEC_ALLOC)
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printf_filtered (" ALLOC");
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if (flags & SEC_LOAD)
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printf_filtered (" LOAD");
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if (flags & SEC_RELOC)
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printf_filtered (" RELOC");
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if (flags & SEC_READONLY)
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printf_filtered (" READONLY");
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if (flags & SEC_CODE)
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printf_filtered (" CODE");
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if (flags & SEC_DATA)
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printf_filtered (" DATA");
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if (flags & SEC_ROM)
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printf_filtered (" ROM");
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if (flags & SEC_CONSTRUCTOR)
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printf_filtered (" CONSTRUCTOR");
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if (flags & SEC_HAS_CONTENTS)
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printf_filtered (" HAS_CONTENTS");
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if (flags & SEC_NEVER_LOAD)
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printf_filtered (" NEVER_LOAD");
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if (flags & SEC_COFF_SHARED_LIBRARY)
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printf_filtered (" COFF_SHARED_LIBRARY");
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if (flags & SEC_IS_COMMON)
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printf_filtered (" IS_COMMON");
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printf_filtered ("\n");
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}
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/* ARGSUSED */
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static void
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maintenance_info_sections (arg, from_tty)
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char *arg;
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int from_tty;
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{
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if (exec_bfd)
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{
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printf_filtered ("Exec file:\n");
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printf_filtered (" `%s', ", bfd_get_filename(exec_bfd));
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wrap_here (" ");
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printf_filtered ("file type %s.\n", bfd_get_target(exec_bfd));
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bfd_map_over_sections(exec_bfd, print_section_table, 0);
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}
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if (core_bfd)
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{
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printf_filtered ("Core file:\n");
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printf_filtered (" `%s', ", bfd_get_filename(core_bfd));
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wrap_here (" ");
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printf_filtered ("file type %s.\n", bfd_get_target(core_bfd));
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bfd_map_over_sections(core_bfd, print_section_table, 0);
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}
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}
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/* ARGSUSED */
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void
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maintenance_print_statistics (args, from_tty)
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char *args;
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int from_tty;
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{
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print_objfile_statistics ();
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print_symbol_bcache_statistics ();
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}
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/* The "maintenance print" command is defined as a prefix, with allow_unknown
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0. Therefore, its own definition is called only for "maintenance print"
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with no args. */
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/* ARGSUSED */
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static void
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maintenance_print_command (arg, from_tty)
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char *arg;
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int from_tty;
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{
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printf_unfiltered ("\"maintenance print\" must be followed by the name of a print command.\n");
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help_list (maintenanceprintlist, "maintenance print ", -1, gdb_stdout);
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}
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/* The "maintenance translate-address" command converts a section and address
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to a symbol. This can be called in two ways:
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maintenance translate-address <secname> <addr>
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or maintenance translate-address <addr>
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*/
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static void
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maintenance_translate_address (arg, from_tty)
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char *arg;
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int from_tty;
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{
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CORE_ADDR address;
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asection *sect;
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char *p;
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struct minimal_symbol *sym;
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struct objfile *objfile;
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if (arg == NULL || *arg == 0)
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error ("requires argument (address or section + address)");
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sect = NULL;
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p = arg;
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if (!isdigit (*p))
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{ /* See if we have a valid section name */
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while (*p && !isspace (*p)) /* Find end of section name */
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p++;
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if (*p == '\000') /* End of command? */
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error ("Need to specify <section-name> and <address>");
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*p++ = '\000';
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while (isspace (*p)) p++; /* Skip whitespace */
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ALL_OBJFILES (objfile)
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if (sect = bfd_get_section_by_name (objfile->obfd, arg))
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break;
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if (!sect)
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error ("Unknown section %s.", arg);
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}
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address = parse_and_eval_address (p);
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if (sect)
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sym = lookup_minimal_symbol_by_pc_section (address, sect);
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else
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sym = lookup_minimal_symbol_by_pc (address);
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if (sym)
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printf_filtered ("%s+%u\n",
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SYMBOL_SOURCE_NAME (sym),
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address - SYMBOL_VALUE_ADDRESS (sym));
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else if (sect)
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printf_filtered ("no symbol at %s:0x%08x\n", sect->name, address);
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else
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printf_filtered ("no symbol at 0x%08x\n", address);
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return;
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}
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#endif /* MAINTENANCE_CMDS */
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void
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_initialize_maint_cmds ()
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{
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#if MAINTENANCE_CMDS /* Entire file goes away if not including maint cmds */
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add_prefix_cmd ("maintenance", class_maintenance, maintenance_command,
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"Commands for use by GDB maintainers.\n\
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Includes commands to dump specific internal GDB structures in\n\
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a human readable form, to cause GDB to deliberately dump core,\n\
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to test internal functions such as the C++ demangler, etc.",
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&maintenancelist, "maintenance ", 0,
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&cmdlist);
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add_com_alias ("mt", "maintenance", class_maintenance, 1);
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add_prefix_cmd ("info", class_maintenance, maintenance_info_command,
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"Commands for showing internal info about the program being debugged.",
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&maintenanceinfolist, "maintenance info ", 0,
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&maintenancelist);
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add_cmd ("sections", class_maintenance, maintenance_info_sections,
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"List the BFD sections of the exec and core files.",
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&maintenanceinfolist);
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add_prefix_cmd ("print", class_maintenance, maintenance_print_command,
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"Maintenance command for printing GDB internal state.",
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&maintenanceprintlist, "maintenance print ", 0,
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&maintenancelist);
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#ifndef _WIN32
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add_cmd ("dump-me", class_maintenance, maintenance_dump_me,
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"Get fatal error; make debugger dump its core.\n\
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GDB sets it's handling of SIGQUIT back to SIG_DFL and then sends\n\
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itself a SIGQUIT signal.",
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&maintenancelist);
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#endif
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add_cmd ("demangle", class_maintenance, maintenance_demangle,
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"Demangle a C++ mangled name.\n\
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Call internal GDB demangler routine to demangle a C++ link name\n\
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and prints the result.",
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&maintenancelist);
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add_cmd ("time", class_maintenance, maintenance_time_display,
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"Set the display of time usage.\n\
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If nonzero, will cause the execution time for each command to be\n\
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displayed, following the command's output.",
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&maintenancelist);
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add_cmd ("space", class_maintenance, maintenance_space_display,
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"Set the display of space usage.\n\
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If nonzero, will cause the execution space for each command to be\n\
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displayed, following the command's output.",
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&maintenancelist);
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add_cmd ("type", class_maintenance, maintenance_print_type,
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"Print a type chain for a given symbol.\n\
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For each node in a type chain, print the raw data for each member of\n\
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the type structure, and the interpretation of the data.",
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&maintenanceprintlist);
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add_cmd ("symbols", class_maintenance, maintenance_print_symbols,
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"Print dump of current symbol definitions.\n\
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Entries in the full symbol table are dumped to file OUTFILE.\n\
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If a SOURCE file is specified, dump only that file's symbols.",
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&maintenanceprintlist);
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add_cmd ("msymbols", class_maintenance, maintenance_print_msymbols,
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"Print dump of current minimal symbol definitions.\n\
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Entries in the minimal symbol table are dumped to file OUTFILE.\n\
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If a SOURCE file is specified, dump only that file's minimal symbols.",
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&maintenanceprintlist);
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add_cmd ("psymbols", class_maintenance, maintenance_print_psymbols,
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"Print dump of current partial symbol definitions.\n\
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Entries in the partial symbol table are dumped to file OUTFILE.\n\
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If a SOURCE file is specified, dump only that file's partial symbols.",
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&maintenanceprintlist);
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add_cmd ("objfiles", class_maintenance, maintenance_print_objfiles,
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"Print dump of current object file definitions.",
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&maintenanceprintlist);
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add_cmd ("statistics", class_maintenance, maintenance_print_statistics,
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"Print statistics about internal gdb state.",
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&maintenanceprintlist);
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add_cmd ("check-symtabs", class_maintenance, maintenance_check_symtabs,
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"Check consistency of psymtabs and symtabs.",
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&maintenancelist);
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add_cmd ("translate-address", class_maintenance, maintenance_translate_address,
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"Translate a section name and address to a symbol.",
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&maintenancelist);
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add_show_from_set (
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add_set_cmd ("watchdog", class_maintenance, var_zinteger, (char *)&watchdog,
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"Set watchdog timer.\n\
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When non-zero, this timeout is used instead of waiting forever for a target to\n\
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finish a low-level step or continue operation. If the specified amount of time\n\
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passes without a response from the target, an error occurs.", &setlist),
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&showlist);
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#endif /* MAINTENANCE_CMDS */
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}
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