86db943ceb
to fputs_unfiltered_hook. Differentiate stdout from stderr when passing text into tcl land. * defs.h, top.c, utils.c (error): Add error_hook. * gdbtk.c: Improve mechanism for capturing output values. * (full_filename): Remove. * (gdb_cmd call_wrapper gdbtk_init): Protect all calls from tcl land with call_wrapper. This prevents longjmps (usually via error()) from jumping out of tcl/tk and leaving things in an indeterminate state. * gdbtk.tcl: New view option to disable line numbers. Put catch around most uses of gdb_cmd. Add update button to reg config window. Stop doing immediate updates when selecting registers. Change register view values into checkbuttons.
621 lines
16 KiB
C
621 lines
16 KiB
C
/* Top level stuff for GDB, the GNU debugger.
|
||
Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994
|
||
Free Software Foundation, Inc.
|
||
|
||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
#include "defs.h"
|
||
#include <setjmp.h>
|
||
#include "top.h"
|
||
#include "target.h"
|
||
#include "inferior.h"
|
||
#include "call-cmds.h"
|
||
|
||
#include "getopt.h"
|
||
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
#include <ctype.h>
|
||
|
||
#include <string.h>
|
||
/* R_OK lives in either unistd.h or sys/file.h. */
|
||
#ifdef USG
|
||
#include <unistd.h>
|
||
#endif
|
||
#ifndef NO_SYS_FILE
|
||
#include <sys/file.h>
|
||
#endif
|
||
|
||
/* Temporary variable for SET_TOP_LEVEL. */
|
||
|
||
static int top_level_val;
|
||
|
||
/* Do a setjmp on error_return and quit_return. catch_errors is
|
||
generally a cleaner way to do this, but main() would look pretty
|
||
ugly if it had to use catch_errors each time. */
|
||
|
||
#define SET_TOP_LEVEL() \
|
||
(((top_level_val = setjmp (error_return)) \
|
||
? (PTR) 0 : (PTR) memcpy (quit_return, error_return, sizeof (jmp_buf))) \
|
||
, top_level_val)
|
||
|
||
/* If nonzero, display time usage both at startup and for each command. */
|
||
|
||
int display_time;
|
||
|
||
/* If nonzero, display space usage both at startup and for each command. */
|
||
|
||
int display_space;
|
||
|
||
extern void gdb_init PARAMS ((void));
|
||
|
||
int
|
||
main (argc, argv)
|
||
int argc;
|
||
char **argv;
|
||
{
|
||
int count;
|
||
static int quiet = 0;
|
||
static int batch = 0;
|
||
|
||
/* Pointers to various arguments from command line. */
|
||
char *symarg = NULL;
|
||
char *execarg = NULL;
|
||
char *corearg = NULL;
|
||
char *cdarg = NULL;
|
||
char *ttyarg = NULL;
|
||
|
||
/* These are static so that we can take their address in an initializer. */
|
||
static int print_help;
|
||
static int print_version;
|
||
|
||
/* Pointers to all arguments of --command option. */
|
||
char **cmdarg;
|
||
/* Allocated size of cmdarg. */
|
||
int cmdsize;
|
||
/* Number of elements of cmdarg used. */
|
||
int ncmd;
|
||
|
||
/* Indices of all arguments of --directory option. */
|
||
char **dirarg;
|
||
/* Allocated size. */
|
||
int dirsize;
|
||
/* Number of elements used. */
|
||
int ndir;
|
||
|
||
struct stat homebuf, cwdbuf;
|
||
char *homedir, *homeinit;
|
||
|
||
register int i;
|
||
|
||
long time_at_startup = get_run_time ();
|
||
|
||
/* start-sanitize-mpw */
|
||
#ifdef MPW
|
||
/* Drop into MacsBug, but only if the executable is specially named. */
|
||
if (strcmp(argv[0], "DEBUGGDB") == 0)
|
||
DebugStr("\pat start of GDB main");
|
||
/* Do all Mac-specific setup. */
|
||
mac_init ();
|
||
#endif /* MPW */
|
||
/* end-sanitize-mpw */
|
||
/* This needs to happen before the first use of malloc. */
|
||
init_malloc ((PTR) NULL);
|
||
|
||
#if defined (ALIGN_STACK_ON_STARTUP)
|
||
i = (int) &count & 0x3;
|
||
if (i != 0)
|
||
alloca (4 - i);
|
||
#endif
|
||
|
||
/* If error() is called from initialization code, just exit */
|
||
if (SET_TOP_LEVEL ()) {
|
||
exit(1);
|
||
}
|
||
|
||
cmdsize = 1;
|
||
cmdarg = (char **) xmalloc (cmdsize * sizeof (*cmdarg));
|
||
ncmd = 0;
|
||
dirsize = 1;
|
||
dirarg = (char **) xmalloc (dirsize * sizeof (*dirarg));
|
||
ndir = 0;
|
||
|
||
quit_flag = 0;
|
||
line = (char *) xmalloc (linesize);
|
||
line[0] = '\0'; /* Terminate saved (now empty) cmd line */
|
||
instream = stdin;
|
||
|
||
getcwd (gdb_dirbuf, sizeof (gdb_dirbuf));
|
||
current_directory = gdb_dirbuf;
|
||
|
||
/* Parse arguments and options. */
|
||
{
|
||
int c;
|
||
/* When var field is 0, use flag field to record the equivalent
|
||
short option (or arbitrary numbers starting at 10 for those
|
||
with no equivalent). */
|
||
static struct option long_options[] =
|
||
{
|
||
{"readnow", no_argument, &readnow_symbol_files, 1},
|
||
{"r", no_argument, &readnow_symbol_files, 1},
|
||
{"mapped", no_argument, &mapped_symbol_files, 1},
|
||
{"m", no_argument, &mapped_symbol_files, 1},
|
||
{"quiet", no_argument, &quiet, 1},
|
||
{"q", no_argument, &quiet, 1},
|
||
{"silent", no_argument, &quiet, 1},
|
||
{"nx", no_argument, &inhibit_gdbinit, 1},
|
||
{"n", no_argument, &inhibit_gdbinit, 1},
|
||
{"batch", no_argument, &batch, 1},
|
||
{"epoch", no_argument, &epoch_interface, 1},
|
||
|
||
/* This is a synonym for "--annotate=1". --annotate is now preferred,
|
||
but keep this here for a long time because people will be running
|
||
emacses which use --fullname. */
|
||
{"fullname", no_argument, 0, 'f'},
|
||
{"f", no_argument, 0, 'f'},
|
||
|
||
{"annotate", required_argument, 0, 12},
|
||
{"help", no_argument, &print_help, 1},
|
||
{"se", required_argument, 0, 10},
|
||
{"symbols", required_argument, 0, 's'},
|
||
{"s", required_argument, 0, 's'},
|
||
{"exec", required_argument, 0, 'e'},
|
||
{"e", required_argument, 0, 'e'},
|
||
{"core", required_argument, 0, 'c'},
|
||
{"c", required_argument, 0, 'c'},
|
||
{"command", required_argument, 0, 'x'},
|
||
{"version", no_argument, &print_version, 1},
|
||
{"x", required_argument, 0, 'x'},
|
||
{"directory", required_argument, 0, 'd'},
|
||
{"cd", required_argument, 0, 11},
|
||
{"tty", required_argument, 0, 't'},
|
||
{"baud", required_argument, 0, 'b'},
|
||
{"b", required_argument, 0, 'b'},
|
||
{"nw", no_argument, &use_windows, 0},
|
||
{"nowindows", no_argument, &use_windows, 0},
|
||
{"w", no_argument, &use_windows, 1},
|
||
{"windows", no_argument, &use_windows, 1},
|
||
{"statistics", no_argument, 0, 13},
|
||
/* Allow machine descriptions to add more options... */
|
||
#ifdef ADDITIONAL_OPTIONS
|
||
ADDITIONAL_OPTIONS
|
||
#endif
|
||
{0, no_argument, 0, 0}
|
||
};
|
||
|
||
while (1)
|
||
{
|
||
int option_index;
|
||
|
||
c = getopt_long_only (argc, argv, "",
|
||
long_options, &option_index);
|
||
if (c == EOF)
|
||
break;
|
||
|
||
/* Long option that takes an argument. */
|
||
if (c == 0 && long_options[option_index].flag == 0)
|
||
c = long_options[option_index].val;
|
||
|
||
switch (c)
|
||
{
|
||
case 0:
|
||
/* Long option that just sets a flag. */
|
||
break;
|
||
case 10:
|
||
symarg = optarg;
|
||
execarg = optarg;
|
||
break;
|
||
case 11:
|
||
cdarg = optarg;
|
||
break;
|
||
case 12:
|
||
/* FIXME: what if the syntax is wrong (e.g. not digits)? */
|
||
annotation_level = atoi (optarg);
|
||
break;
|
||
case 13:
|
||
/* Enable the display of both time and space usage. */
|
||
display_time = 1;
|
||
display_space = 1;
|
||
break;
|
||
case 'f':
|
||
annotation_level = 1;
|
||
break;
|
||
case 's':
|
||
symarg = optarg;
|
||
break;
|
||
case 'e':
|
||
execarg = optarg;
|
||
break;
|
||
case 'c':
|
||
corearg = optarg;
|
||
break;
|
||
case 'x':
|
||
cmdarg[ncmd++] = optarg;
|
||
if (ncmd >= cmdsize)
|
||
{
|
||
cmdsize *= 2;
|
||
cmdarg = (char **) xrealloc ((char *)cmdarg,
|
||
cmdsize * sizeof (*cmdarg));
|
||
}
|
||
break;
|
||
case 'd':
|
||
dirarg[ndir++] = optarg;
|
||
if (ndir >= dirsize)
|
||
{
|
||
dirsize *= 2;
|
||
dirarg = (char **) xrealloc ((char *)dirarg,
|
||
dirsize * sizeof (*dirarg));
|
||
}
|
||
break;
|
||
case 't':
|
||
ttyarg = optarg;
|
||
break;
|
||
case 'q':
|
||
quiet = 1;
|
||
break;
|
||
case 'b':
|
||
{
|
||
int i;
|
||
char *p;
|
||
|
||
i = strtol (optarg, &p, 0);
|
||
if (i == 0 && p == optarg)
|
||
|
||
/* Don't use *_filtered or warning() (which relies on
|
||
current_target) until after initialize_all_files(). */
|
||
|
||
fprintf_unfiltered
|
||
(gdb_stderr,
|
||
"warning: could not set baud rate to `%s'.\n", optarg);
|
||
else
|
||
baud_rate = i;
|
||
}
|
||
break;
|
||
|
||
#ifdef ADDITIONAL_OPTION_CASES
|
||
ADDITIONAL_OPTION_CASES
|
||
#endif
|
||
case '?':
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Use `%s --help' for a complete list of options.\n",
|
||
argv[0]);
|
||
exit (1);
|
||
}
|
||
}
|
||
|
||
/* OK, that's all the options. The other arguments are filenames. */
|
||
count = 0;
|
||
for (; optind < argc; optind++)
|
||
switch (++count)
|
||
{
|
||
case 1:
|
||
symarg = argv[optind];
|
||
execarg = argv[optind];
|
||
break;
|
||
case 2:
|
||
corearg = argv[optind];
|
||
break;
|
||
case 3:
|
||
fprintf_unfiltered (gdb_stderr,
|
||
"Excess command line arguments ignored. (%s%s)\n",
|
||
argv[optind], (optind == argc - 1) ? "" : " ...");
|
||
break;
|
||
}
|
||
if (batch)
|
||
quiet = 1;
|
||
}
|
||
|
||
gdb_init ();
|
||
|
||
/* Do these (and anything which might call wrap_here or *_filtered)
|
||
after initialize_all_files. */
|
||
if (print_version)
|
||
{
|
||
print_gdb_version (gdb_stdout);
|
||
wrap_here ("");
|
||
printf_filtered ("\n");
|
||
exit (0);
|
||
}
|
||
|
||
if (print_help)
|
||
{
|
||
/* --version is intentionally not documented here, because we
|
||
are printing the version here, and the help is long enough
|
||
already. */
|
||
|
||
print_gdb_version (gdb_stdout);
|
||
/* Make sure the output gets printed. */
|
||
wrap_here ("");
|
||
printf_filtered ("\n");
|
||
|
||
/* But don't use *_filtered here. We don't want to prompt for continue
|
||
no matter how small the screen or how much we're going to print. */
|
||
/* start-sanitize-mpw */
|
||
/* For reasons too ugly to describe... */
|
||
#ifdef MPW_C
|
||
fputs_unfiltered ("This is the GNU debugger.\n", gdb_stdout);
|
||
#else
|
||
/* end-sanitize-mpw */
|
||
fputs_unfiltered ("\
|
||
This is the GNU debugger. Usage:\n\
|
||
gdb [options] [executable-file [core-file or process-id]]\n\
|
||
Options:\n\
|
||
--help Print this message.\n\
|
||
--quiet Do not print version number on startup.\n\
|
||
--fullname Output information used by emacs-GDB interface.\n\
|
||
--epoch Output information used by epoch emacs-GDB interface.\n\
|
||
--batch Exit after processing options.\n\
|
||
--nx Do not read .gdbinit file.\n\
|
||
--tty=TTY Use TTY for input/output by the program being debugged.\n\
|
||
--cd=DIR Change current directory to DIR.\n\
|
||
--directory=DIR Search for source files in DIR.\n\
|
||
--command=FILE Execute GDB commands from FILE.\n\
|
||
--symbols=SYMFILE Read symbols from SYMFILE.\n\
|
||
--exec=EXECFILE Use EXECFILE as the executable.\n\
|
||
--se=FILE Use FILE as symbol file and executable file.\n\
|
||
--core=COREFILE Analyze the core dump COREFILE.\n\
|
||
-b BAUDRATE Set serial port baud rate used for remote debugging.\n\
|
||
--mapped Use mapped symbol files if supported on this system.\n\
|
||
--readnow Fully read symbol files on first access.\n\
|
||
--nw Do not use a window interface.\n\
|
||
", gdb_stdout);
|
||
/* start-sanitize-mpw */
|
||
#endif /* MPW_C */
|
||
/* end-sanitize-mpw */
|
||
#ifdef ADDITIONAL_OPTION_HELP
|
||
fputs_unfiltered (ADDITIONAL_OPTION_HELP, gdb_stdout);
|
||
#endif
|
||
fputs_unfiltered ("\n\
|
||
For more information, type \"help\" from within GDB, or consult the\n\
|
||
GDB manual (available as on-line info or a printed manual).\n", gdb_stdout);
|
||
exit (0);
|
||
}
|
||
|
||
if (!quiet)
|
||
{
|
||
/* Print all the junk at the top, with trailing "..." if we are about
|
||
to read a symbol file (possibly slowly). */
|
||
print_gnu_advertisement ();
|
||
print_gdb_version (gdb_stdout);
|
||
if (symarg)
|
||
printf_filtered ("..");
|
||
wrap_here("");
|
||
gdb_flush (gdb_stdout); /* Force to screen during slow operations */
|
||
}
|
||
|
||
error_pre_print = "\n\n";
|
||
/* We may get more than one warning, don't double space all of them... */
|
||
warning_pre_print = "\nwarning: ";
|
||
|
||
/* Read and execute $HOME/.gdbinit file, if it exists. This is done
|
||
*before* all the command line arguments are processed; it sets
|
||
global parameters, which are independent of what file you are
|
||
debugging or what directory you are in. */
|
||
homedir = getenv ("HOME");
|
||
if (homedir)
|
||
{
|
||
homeinit = (char *) alloca (strlen (getenv ("HOME")) +
|
||
strlen (gdbinit) + 10);
|
||
strcpy (homeinit, getenv ("HOME"));
|
||
strcat (homeinit, "/");
|
||
strcat (homeinit, gdbinit);
|
||
if (!inhibit_gdbinit && access (homeinit, R_OK) == 0)
|
||
{
|
||
if (!SET_TOP_LEVEL ())
|
||
source_command (homeinit, 0);
|
||
}
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
/* Do stats; no need to do them elsewhere since we'll only
|
||
need them if homedir is set. Make sure that they are
|
||
zero in case one of them fails (this guarantees that they
|
||
won't match if either exists). */
|
||
|
||
memset (&homebuf, 0, sizeof (struct stat));
|
||
memset (&cwdbuf, 0, sizeof (struct stat));
|
||
|
||
stat (homeinit, &homebuf);
|
||
stat (gdbinit, &cwdbuf); /* We'll only need this if
|
||
homedir was set. */
|
||
}
|
||
|
||
/* Now perform all the actions indicated by the arguments. */
|
||
if (cdarg != NULL)
|
||
{
|
||
if (!SET_TOP_LEVEL ())
|
||
{
|
||
cd_command (cdarg, 0);
|
||
}
|
||
}
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
for (i = 0; i < ndir; i++)
|
||
if (!SET_TOP_LEVEL ())
|
||
directory_command (dirarg[i], 0);
|
||
free ((PTR)dirarg);
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
if (execarg != NULL
|
||
&& symarg != NULL
|
||
&& STREQ (execarg, symarg))
|
||
{
|
||
/* The exec file and the symbol-file are the same. If we can't open
|
||
it, better only print one error message. */
|
||
if (!SET_TOP_LEVEL ())
|
||
{
|
||
exec_file_command (execarg, !batch);
|
||
symbol_file_command (symarg, 0);
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (execarg != NULL)
|
||
if (!SET_TOP_LEVEL ())
|
||
exec_file_command (execarg, !batch);
|
||
if (symarg != NULL)
|
||
if (!SET_TOP_LEVEL ())
|
||
symbol_file_command (symarg, 0);
|
||
}
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
/* After the symbol file has been read, print a newline to get us
|
||
beyond the copyright line... But errors should still set off
|
||
the error message with a (single) blank line. */
|
||
if (!quiet)
|
||
printf_filtered ("\n");
|
||
error_pre_print = "\n";
|
||
warning_pre_print = "\nwarning: ";
|
||
|
||
if (corearg != NULL)
|
||
if (!SET_TOP_LEVEL ())
|
||
core_file_command (corearg, !batch);
|
||
else if (isdigit (corearg[0]) && !SET_TOP_LEVEL ())
|
||
attach_command (corearg, !batch);
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
if (ttyarg != NULL)
|
||
if (!SET_TOP_LEVEL ())
|
||
tty_command (ttyarg, !batch);
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
#ifdef ADDITIONAL_OPTION_HANDLER
|
||
ADDITIONAL_OPTION_HANDLER;
|
||
#endif
|
||
|
||
/* Error messages should no longer be distinguished with extra output. */
|
||
error_pre_print = 0;
|
||
warning_pre_print = "warning: ";
|
||
|
||
/* Read the .gdbinit file in the current directory, *if* it isn't
|
||
the same as the $HOME/.gdbinit file (it should exist, also). */
|
||
|
||
if (!homedir
|
||
|| memcmp ((char *) &homebuf, (char *) &cwdbuf, sizeof (struct stat)))
|
||
if (!inhibit_gdbinit && access (gdbinit, R_OK) == 0)
|
||
{
|
||
if (!SET_TOP_LEVEL ())
|
||
source_command (gdbinit, 0);
|
||
}
|
||
do_cleanups (ALL_CLEANUPS);
|
||
|
||
for (i = 0; i < ncmd; i++)
|
||
{
|
||
if (!SET_TOP_LEVEL ())
|
||
{
|
||
if (cmdarg[i][0] == '-' && cmdarg[i][1] == '\0')
|
||
read_command_file (stdin);
|
||
else
|
||
source_command (cmdarg[i], !batch);
|
||
do_cleanups (ALL_CLEANUPS);
|
||
}
|
||
}
|
||
free ((PTR)cmdarg);
|
||
|
||
/* Read in the old history after all the command files have been read. */
|
||
init_history();
|
||
|
||
if (batch)
|
||
{
|
||
/* We have hit the end of the batch file. */
|
||
exit (0);
|
||
}
|
||
|
||
/* Do any host- or target-specific hacks. This is used for i960 targets
|
||
to force the user to set a nindy target and spec its parameters. */
|
||
|
||
#ifdef BEFORE_MAIN_LOOP_HOOK
|
||
BEFORE_MAIN_LOOP_HOOK;
|
||
#endif
|
||
|
||
/* Show time and/or space usage. */
|
||
|
||
if (display_time)
|
||
{
|
||
long init_time = get_run_time () - time_at_startup;
|
||
|
||
printf_unfiltered ("Startup time: %ld.%06ld\n",
|
||
init_time / 1000000, init_time % 1000000);
|
||
}
|
||
|
||
if (display_space)
|
||
{
|
||
extern char **environ;
|
||
char *lim = (char *) sbrk (0);
|
||
|
||
printf_unfiltered ("Startup size: data size %ld\n",
|
||
(long) (lim - (char *) &environ));
|
||
}
|
||
|
||
/* The command loop. */
|
||
|
||
while (1)
|
||
{
|
||
if (!SET_TOP_LEVEL ())
|
||
{
|
||
do_cleanups (ALL_CLEANUPS); /* Do complete cleanup */
|
||
/* GUIs generally have their own command loop, mainloop, or whatever.
|
||
This is a good place to gain control because many error
|
||
conditions will end up here via longjmp(). */
|
||
if (command_loop_hook)
|
||
command_loop_hook ();
|
||
else
|
||
command_loop ();
|
||
quit_command ((char *)0, instream == stdin);
|
||
}
|
||
}
|
||
/* No exit -- exit is through quit_command. */
|
||
}
|
||
|
||
void
|
||
init_proc ()
|
||
{
|
||
}
|
||
|
||
int
|
||
proc_wait (pid, status)
|
||
int pid;
|
||
int *status;
|
||
{
|
||
#ifndef __GO32__
|
||
return wait (status);
|
||
#endif
|
||
}
|
||
|
||
void
|
||
proc_remove_foreign (pid)
|
||
int pid;
|
||
{
|
||
}
|
||
|
||
void
|
||
fputs_unfiltered (linebuffer, stream)
|
||
const char *linebuffer;
|
||
FILE *stream;
|
||
{
|
||
if (fputs_unfiltered_hook)
|
||
{
|
||
/* FIXME: I think we should only be doing this for stdout or stderr.
|
||
Either that or we should be passing stream to the hook so it can
|
||
deal with it. If that is cleaned up, this function can go back
|
||
into utils.c and the fputs_unfiltered_hook can replace the current
|
||
ability to avoid this function by not linking with main.c. */
|
||
fputs_unfiltered_hook (linebuffer, stream);
|
||
return;
|
||
}
|
||
|
||
fputs (linebuffer, stream);
|
||
}
|