750 lines
19 KiB
C
750 lines
19 KiB
C
/* Startup code for gdbtk.
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Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
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Written by Stu Grossman <grossman@cygnus.com> of 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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#include "symtab.h"
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#include "inferior.h"
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#include "command.h"
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#include "bfd.h"
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#include "symfile.h"
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#include "objfiles.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "tracepoint.h"
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#include "demangle.h"
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#ifdef _WIN32
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#include <winuser.h>
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#endif
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#include <sys/stat.h>
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#include <tcl.h>
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#include <tk.h>
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#include <itcl.h>
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#include <tix.h>
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#include "guitcl.h"
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#include "gdbtk.h"
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#ifdef IDE
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/* start-sanitize-ide */
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#include "event.h"
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#include "idetcl.h"
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#include "ilutk.h"
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/* end-sanitize-ide */
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#endif
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#ifdef ANSI_PROTOTYPES
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#include <stdarg.h>
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#else
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#include <varargs.h>
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#endif
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#include <signal.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <setjmp.h>
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#include "top.h"
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#include <sys/ioctl.h>
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#include "gdb_string.h"
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#include "dis-asm.h"
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#include <stdio.h>
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#include "gdbcmd.h"
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#include "annotate.h"
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#include <sys/time.h>
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/* For Cygwin32, we use a timer to periodically check for Windows
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messages. FIXME: It would be better to not poll, but to instead
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rewrite the target_wait routines to serve as input sources.
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Unfortunately, that will be a lot of work. */
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static sigset_t nullsigmask;
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static struct sigaction act1, act2;
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static struct itimerval it_on, it_off;
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extern int Tktable_Init PARAMS ((Tcl_Interp *interp));
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static void gdbtk_init PARAMS ((char *));
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void gdbtk_interactive PARAMS ((void));
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static void cleanup_init PARAMS ((int));
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static void tk_command PARAMS ((char *, int));
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void gdbtk_add_hooks PARAMS ((void));
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int gdbtk_test PARAMS ((char *));
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/*
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* gdbtk_fputs is defined in the gdbtk_hooks.c, but we need it here
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* because we delay adding this hook till all the setup is done. That
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* way errors will go to stdout.
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*/
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extern void gdbtk_fputs PARAMS ((const char *, FILE *));
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/* Handle for TCL interpreter */
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Tcl_Interp *gdbtk_interp = NULL;
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static int gdbtk_timer_going = 0;
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/* linked variable used to tell tcl what the current thread is */
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int gdb_context = 0;
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/* This variable is true when the inferior is running. See note in
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* gdbtk.h for details.
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*/
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int running_now;
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/* This variable determines where memory used for disassembly is read from.
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* See note in gdbtk.h for details.
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*/
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int disassemble_from_exec = -1;
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/* This variable holds the name of a Tcl file which should be sourced by the
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interpreter when it goes idle at startup. Used with the testsuite. */
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static char *gdbtk_source_filename = NULL;
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#ifndef _WIN32
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/* Supply malloc calls for tcl/tk. We do not want to do this on
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Windows, because Tcl_Alloc is probably in a DLL which will not call
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the mmalloc routines. */
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char *
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Tcl_Alloc (size)
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unsigned int size;
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{
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return xmalloc (size);
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}
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char *
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Tcl_Realloc (ptr, size)
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char *ptr;
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unsigned int size;
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{
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return xrealloc (ptr, size);
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}
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void
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Tcl_Free(ptr)
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char *ptr;
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{
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free (ptr);
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}
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#endif /* ! _WIN32 */
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#ifdef _WIN32
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/* On Windows, if we hold a file open, other programs can't write to
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* it. In particular, we don't want to hold the executable open,
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* because it will mean that people have to get out of the debugging
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* session in order to remake their program. So we close it, although
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* this will cost us if and when we need to reopen it.
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*/
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void
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close_bfds ()
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{
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struct objfile *o;
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ALL_OBJFILES (o)
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{
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if (o->obfd != NULL)
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bfd_cache_close (o->obfd);
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}
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if (exec_bfd != NULL)
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bfd_cache_close (exec_bfd);
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}
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#endif /* _WIN32 */
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/* TclDebug (const char *fmt, ...) works just like printf() but
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* sends the output to the GDB TK debug window.
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* Not for normal use; just a convenient tool for debugging
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*/
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void
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#ifdef ANSI_PROTOTYPES
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TclDebug (const char *fmt, ...)
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#else
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TclDebug (va_alist)
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va_dcl
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#endif
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{
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va_list args;
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char buf[512], *v[2], *merge;
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#ifdef ANSI_PROTOTYPES
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va_start (args, fmt);
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#else
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char *fmt;
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va_start (args);
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fmt = va_arg (args, char *);
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#endif
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v[0] = "debug";
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v[1] = buf;
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vsprintf (buf, fmt, args);
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va_end (args);
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merge = Tcl_Merge (2, v);
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Tcl_Eval (gdbtk_interp, merge);
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Tcl_Free (merge);
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}
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/*
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* The rest of this file contains the start-up, and event handling code for gdbtk.
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*/
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/*
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* This cleanup function is added to the cleanup list that surrounds the Tk
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* main in gdbtk_init. It deletes the Tcl interpreter.
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*/
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static void
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cleanup_init (ignored)
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int ignored;
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{
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if (gdbtk_interp != NULL)
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Tcl_DeleteInterp (gdbtk_interp);
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gdbtk_interp = NULL;
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}
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/* Come here during long calculations to check for GUI events. Usually invoked
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via the QUIT macro. */
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void
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gdbtk_interactive ()
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{
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/* Tk_DoOneEvent (TK_DONT_WAIT|TK_IDLE_EVENTS); */
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}
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void
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gdbtk_start_timer ()
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{
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static int first = 1;
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/*TclDebug ("Starting timer....");*/
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if (first)
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{
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/* first time called, set up all the structs */
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first = 0;
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sigemptyset (&nullsigmask);
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act1.sa_handler = x_event;
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act1.sa_mask = nullsigmask;
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act1.sa_flags = 0;
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act2.sa_handler = SIG_IGN;
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act2.sa_mask = nullsigmask;
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act2.sa_flags = 0;
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it_on.it_interval.tv_sec = 0;
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it_on.it_interval.tv_usec = 250000; /* .25 sec */
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it_on.it_value.tv_sec = 0;
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it_on.it_value.tv_usec = 250000;
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it_off.it_interval.tv_sec = 0;
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it_off.it_interval.tv_usec = 0;
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it_off.it_value.tv_sec = 0;
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it_off.it_value.tv_usec = 0;
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}
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if (!gdbtk_timer_going)
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{
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sigaction (SIGALRM, &act1, NULL);
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setitimer (ITIMER_REAL, &it_on, NULL);
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gdbtk_timer_going = 1;
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}
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}
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void
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gdbtk_stop_timer ()
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{
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if (gdbtk_timer_going)
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{
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gdbtk_timer_going = 0;
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/*TclDebug ("Stopping timer.");*/
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setitimer (ITIMER_REAL, &it_off, NULL);
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sigaction (SIGALRM, &act2, NULL);
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}
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}
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/* gdbtk_init installs this function as a final cleanup. */
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static void
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gdbtk_cleanup (dummy)
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PTR dummy;
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{
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Tcl_Eval (gdbtk_interp, "gdbtk_cleanup");
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#ifdef IDE
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{
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struct ide_event_handle *h = (struct ide_event_handle *) dummy;
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ide_interface_deregister_all (h);
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}
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#endif
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Tcl_Finalize ();
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}
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/* Initialize gdbtk. This involves creating a Tcl interpreter,
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* defining all the Tcl commands that the GUI will use, pointing
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* all the gdb "hooks" to the correct functions,
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* and setting the Tcl auto loading environment so that we can find all
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* the Tcl based library files.
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*/
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static void
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gdbtk_init ( argv0 )
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char *argv0;
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{
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struct cleanup *old_chain;
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char *lib, *gdbtk_lib, *gdbtk_lib_tmp, *gdbtk_file;
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int found_main;
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Tcl_Obj *auto_path_elem, *auto_path_name;
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#ifdef IDE
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/* start-sanitize-ide */
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struct ide_event_handle *h;
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const char *errmsg;
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char *libexecdir;
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/* end-sanitize-ide */
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#endif
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/* If there is no DISPLAY environment variable, Tk_Init below will fail,
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causing gdb to abort. If instead we simply return here, gdb will
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gracefully degrade to using the command line interface. */
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#ifndef WINNT
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if (getenv ("DISPLAY") == NULL)
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return;
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#endif
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old_chain = make_cleanup (cleanup_init, 0);
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/* First init tcl and tk. */
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Tcl_FindExecutable (argv0);
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gdbtk_interp = Tcl_CreateInterp ();
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#ifdef TCL_MEM_DEBUG
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Tcl_InitMemory (gdbtk_interp);
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#endif
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if (!gdbtk_interp)
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error ("Tcl_CreateInterp failed");
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if (Tcl_Init(gdbtk_interp) != TCL_OK)
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error ("Tcl_Init failed: %s", gdbtk_interp->result);
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#ifndef IDE
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/* For the IDE we register the cleanup later, after we've
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initialized events. */
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make_final_cleanup (gdbtk_cleanup, NULL);
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#endif
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/* Initialize the Paths variable. */
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if (ide_initialize_paths (gdbtk_interp, "gdbtcl") != TCL_OK)
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error ("ide_initialize_paths failed: %s", gdbtk_interp->result);
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#ifdef IDE
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/* start-sanitize-ide */
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/* Find the directory where we expect to find idemanager. We ignore
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errors since it doesn't really matter if this fails. */
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libexecdir = Tcl_GetVar2 (gdbtk_interp, "Paths", "libexecdir", TCL_GLOBAL_ONLY);
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IluTk_Init ();
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h = ide_event_init_from_environment (&errmsg, libexecdir);
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make_final_cleanup (gdbtk_cleanup, h);
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if (h == NULL)
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{
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Tcl_AppendResult (gdbtk_interp, "can't initialize event system: ", errmsg,
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(char *) NULL);
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fprintf(stderr, "WARNING: ide_event_init_client failed: %s\n", gdbtk_interp->result);
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Tcl_SetVar (gdbtk_interp, "IDE_ENABLED", "0", 0);
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}
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else
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{
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if (ide_create_tclevent_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_tclevent_command failed: %s", gdbtk_interp->result);
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if (ide_create_edit_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_edit_command failed: %s", gdbtk_interp->result);
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if (ide_create_property_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_property_command failed: %s", gdbtk_interp->result);
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if (ide_create_build_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_build_command failed: %s", gdbtk_interp->result);
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if (ide_create_window_register_command (gdbtk_interp, h, "gdb-restore")
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!= TCL_OK)
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error ("ide_create_window_register_command failed: %s",
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gdbtk_interp->result);
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if (ide_create_window_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_window_command failed: %s", gdbtk_interp->result);
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if (ide_create_exit_command (gdbtk_interp, h) != TCL_OK)
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error ("ide_create_exit_command failed: %s", gdbtk_interp->result);
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if (ide_create_help_command (gdbtk_interp) != TCL_OK)
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error ("ide_create_help_command failed: %s", gdbtk_interp->result);
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/*
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if (ide_initialize (gdbtk_interp, "gdb") != TCL_OK)
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error ("ide_initialize failed: %s", gdbtk_interp->result);
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*/
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Tcl_SetVar (gdbtk_interp, "IDE_ENABLED", "1", 0);
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}
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/* end-sanitize-ide */
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#else
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Tcl_SetVar (gdbtk_interp, "IDE_ENABLED", "0", 0);
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#endif /* IDE */
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/* We don't want to open the X connection until we've done all the
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IDE initialization. Otherwise, goofy looking unfinished windows
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pop up when ILU drops into the TCL event loop. */
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if (Tk_Init(gdbtk_interp) != TCL_OK)
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error ("Tk_Init failed: %s", gdbtk_interp->result);
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if (Itcl_Init(gdbtk_interp) == TCL_ERROR)
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error ("Itcl_Init failed: %s", gdbtk_interp->result);
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Tcl_StaticPackage(gdbtk_interp, "Tktable", Tktable_Init,
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(Tcl_PackageInitProc *) NULL);
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if (Tix_Init(gdbtk_interp) != TCL_OK)
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error ("Tix_Init failed: %s", gdbtk_interp->result);
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Tcl_StaticPackage(gdbtk_interp, "Tktable", Tktable_Init,
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(Tcl_PackageInitProc *) NULL);
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if (Tktable_Init(gdbtk_interp) != TCL_OK)
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error ("Tktable_Init failed: %s", gdbtk_interp->result);
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Tcl_StaticPackage(gdbtk_interp, "Tktable", Tktable_Init,
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(Tcl_PackageInitProc *) NULL);
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/*
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* These are the commands to do some Windows Specific stuff...
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*/
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#ifdef __CYGWIN32__
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if (ide_create_messagebox_command (gdbtk_interp) != TCL_OK)
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error ("messagebox command initialization failed");
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/* On Windows, create a sizebox widget command */
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if (ide_create_sizebox_command (gdbtk_interp) != TCL_OK)
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error ("sizebox creation failed");
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if (ide_create_winprint_command (gdbtk_interp) != TCL_OK)
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error ("windows print code initialization failed");
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/* start-sanitize-ide */
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/* An interface to ShellExecute. */
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if (ide_create_shell_execute_command (gdbtk_interp) != TCL_OK)
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error ("shell execute command initialization failed");
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/* end-sanitize-ide */
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if (ide_create_win_grab_command (gdbtk_interp) != TCL_OK)
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error ("grab support command initialization failed");
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/* Path conversion functions. */
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if (ide_create_cygwin_path_command (gdbtk_interp) != TCL_OK)
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error ("cygwin path command initialization failed");
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#endif
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/*
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* This adds all the Gdbtk commands.
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*/
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if (Gdbtk_Init(gdbtk_interp) != TCL_OK)
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{
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error("Gdbtk_Init failed: %s", gdbtk_interp->result);
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}
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Tcl_StaticPackage(gdbtk_interp, "Gdbtk", Gdbtk_Init, NULL);
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/* This adds all the hooks that call up from the bowels of gdb
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* back into Tcl-land...
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*/
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gdbtk_add_hooks();
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/* Add a back door to Tk from the gdb console... */
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add_com ("tk", class_obscure, tk_command,
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"Send a command directly into tk.");
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Tcl_LinkVar (gdbtk_interp, "disassemble-from-exec", (char *) &disassemble_from_exec,
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TCL_LINK_INT);
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/* find the gdb tcl library and source main.tcl */
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gdbtk_lib = getenv ("GDBTK_LIBRARY");
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if (!gdbtk_lib)
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{
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if (access ("gdbtcl/main.tcl", R_OK) == 0)
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gdbtk_lib = "gdbtcl";
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else
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gdbtk_lib = GDBTK_LIBRARY;
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}
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gdbtk_lib_tmp = xstrdup (gdbtk_lib);
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found_main = 0;
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/* see if GDBTK_LIBRARY is a path list */
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lib = strtok (gdbtk_lib_tmp, GDBTK_PATH_SEP);
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auto_path_name = Tcl_NewStringObj ("auto_path", -1);
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do
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{
|
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auto_path_elem = Tcl_NewStringObj (lib, -1);
|
||
if (Tcl_ObjSetVar2 (gdbtk_interp, auto_path_name, NULL, auto_path_elem,
|
||
TCL_GLOBAL_ONLY | TCL_APPEND_VALUE | TCL_LIST_ELEMENT ) == NULL)
|
||
{
|
||
fputs_unfiltered (Tcl_GetVar (gdbtk_interp, "errorInfo", 0), gdb_stderr);
|
||
error ("");
|
||
}
|
||
if (!found_main)
|
||
{
|
||
gdbtk_file = concat (lib, "/main.tcl", (char *) NULL);
|
||
if (access (gdbtk_file, R_OK) == 0)
|
||
{
|
||
found_main++;
|
||
Tcl_SetVar (gdbtk_interp, "GDBTK_LIBRARY", lib, 0);
|
||
}
|
||
}
|
||
}
|
||
while ((lib = strtok (NULL, ":")) != NULL);
|
||
|
||
free (gdbtk_lib_tmp);
|
||
Tcl_DecrRefCount(auto_path_name);
|
||
|
||
if (!found_main)
|
||
{
|
||
/* Try finding it with the auto path. */
|
||
|
||
static const char script[] ="\
|
||
proc gdbtk_find_main {} {\n\
|
||
global auto_path GDBTK_LIBRARY\n\
|
||
foreach dir $auto_path {\n\
|
||
set f [file join $dir main.tcl]\n\
|
||
if {[file exists $f]} then {\n\
|
||
set GDBTK_LIBRARY $dir\n\
|
||
return $f\n\
|
||
}\n\
|
||
}\n\
|
||
return ""\n\
|
||
}\n\
|
||
gdbtk_find_main";
|
||
|
||
if (Tcl_GlobalEval (gdbtk_interp, (char *) script) != TCL_OK)
|
||
{
|
||
fputs_unfiltered (Tcl_GetVar (gdbtk_interp, "errorInfo", 0), gdb_stderr);
|
||
error ("");
|
||
}
|
||
|
||
if (gdbtk_interp->result[0] != '\0')
|
||
{
|
||
gdbtk_file = xstrdup (gdbtk_interp->result);
|
||
found_main++;
|
||
}
|
||
}
|
||
|
||
if (!found_main)
|
||
{
|
||
fputs_unfiltered_hook = NULL; /* Force errors to stdout/stderr */
|
||
if (getenv("GDBTK_LIBRARY"))
|
||
{
|
||
fprintf_unfiltered (stderr, "Unable to find main.tcl in %s\n",getenv("GDBTK_LIBRARY"));
|
||
fprintf_unfiltered (stderr,
|
||
"Please set GDBTK_LIBRARY to a path that includes the GDB tcl files.\n");
|
||
}
|
||
else
|
||
{
|
||
fprintf_unfiltered (stderr, "Unable to find main.tcl in %s\n", GDBTK_LIBRARY);
|
||
fprintf_unfiltered (stderr, "You might want to set GDBTK_LIBRARY\n");
|
||
}
|
||
error("");
|
||
}
|
||
|
||
/* Defer setup of fputs_unfiltered_hook to near the end so that error messages
|
||
prior to this point go to stdout/stderr. */
|
||
|
||
fputs_unfiltered_hook = gdbtk_fputs;
|
||
|
||
/* start-sanitize-tclpro */
|
||
#ifdef TCLPRO_DEBUGGER
|
||
{
|
||
Tcl_DString source_cmd;
|
||
|
||
Tcl_DStringInit (&source_cmd);
|
||
Tcl_DStringAppend (&source_cmd,
|
||
"if {[info exists env(DEBUG_STUB)]} {source $env(DEBUG_STUB); " -1);
|
||
Tcl_DStringAppend (&source_cmd, "debugger_init; debugger_eval {source {", -1);
|
||
Tcl_DStringAppend (&source_cmd, gdbtk_file, -1);
|
||
Tcl_DStringAppend (&source_cmd, "}}} else {source {", -1);
|
||
Tcl_DStringAppend (&source_cmd, gdbtk_file, -1);
|
||
Tcl_DStringAppend (&source_cmd, "}}", -1);
|
||
if (Tcl_GlobalEval (gdbtk_interp, Tcl_DStringValue (&source_cmd)) != TCL_OK)
|
||
#else
|
||
/* end-sanitize-tclpro */
|
||
if (Tcl_EvalFile (gdbtk_interp, gdbtk_file) != TCL_OK)
|
||
/* start-sanitize-tclpro */
|
||
#endif
|
||
/* end-sanitize-tclpro */
|
||
{
|
||
char *msg;
|
||
|
||
/* Force errorInfo to be set up propertly. */
|
||
Tcl_AddErrorInfo (gdbtk_interp, "");
|
||
|
||
msg = Tcl_GetVar (gdbtk_interp, "errorInfo", TCL_GLOBAL_ONLY);
|
||
|
||
fputs_unfiltered_hook = NULL; /* Force errors to stdout/stderr */
|
||
|
||
#ifdef _WIN32
|
||
MessageBox (NULL, msg, NULL, MB_OK | MB_ICONERROR | MB_TASKMODAL);
|
||
#else
|
||
fputs_unfiltered (msg, gdb_stderr);
|
||
#endif
|
||
|
||
error ("");
|
||
}
|
||
/* start-sanitize-tclpro */
|
||
#ifdef TCLPRO_DEBUGGER
|
||
Tcl_DStringFree(&source_cmd);
|
||
}
|
||
#endif
|
||
/* end-sanitize-tclpro */
|
||
|
||
#ifdef IDE
|
||
/* start-sanitize-ide */
|
||
/* Don't do this until we have initialized. Otherwise, we may get a
|
||
run command before we are ready for one. */
|
||
if (ide_run_server_init (gdbtk_interp, h) != TCL_OK)
|
||
error ("ide_run_server_init failed: %s", gdbtk_interp->result);
|
||
/* end-sanitize-ide */
|
||
#endif
|
||
|
||
free (gdbtk_file);
|
||
|
||
/* Now source in the filename provided by the --tclcommand option.
|
||
This is mostly used for the gdbtk testsuite... */
|
||
|
||
if (gdbtk_source_filename != NULL)
|
||
{
|
||
char *s = "after idle source ";
|
||
char *script = concat (s, gdbtk_source_filename, (char *) NULL);
|
||
Tcl_Eval (gdbtk_interp, script);
|
||
free (gdbtk_source_filename);
|
||
free (script);
|
||
}
|
||
|
||
|
||
discard_cleanups (old_chain);
|
||
}
|
||
|
||
/* gdbtk_test is used in main.c to validate the -tclcommand option to
|
||
gdb, which sources in a file of tcl code after idle during the
|
||
startup procedure. */
|
||
|
||
int
|
||
gdbtk_test (filename)
|
||
char *filename;
|
||
{
|
||
if (access (filename, R_OK) != 0)
|
||
return 0;
|
||
else
|
||
gdbtk_source_filename = xstrdup (filename);
|
||
return 1;
|
||
}
|
||
|
||
/* Come here during initialize_all_files () */
|
||
|
||
void
|
||
_initialize_gdbtk ()
|
||
{
|
||
if (use_windows)
|
||
{
|
||
/* Tell the rest of the world that Gdbtk is now set up. */
|
||
|
||
init_ui_hook = gdbtk_init;
|
||
#ifdef __CYGWIN32__
|
||
(void) FreeConsole ();
|
||
#endif
|
||
}
|
||
#ifdef __CYGWIN32__
|
||
else
|
||
{
|
||
DWORD ft = GetFileType (GetStdHandle (STD_INPUT_HANDLE));
|
||
void cygwin32_attach_handle_to_fd (char *, int, HANDLE, int, int);
|
||
|
||
switch (ft)
|
||
{
|
||
case FILE_TYPE_DISK:
|
||
case FILE_TYPE_CHAR:
|
||
case FILE_TYPE_PIPE:
|
||
break;
|
||
default:
|
||
AllocConsole();
|
||
cygwin32_attach_handle_to_fd ("/dev/conin", 0,
|
||
GetStdHandle (STD_INPUT_HANDLE),
|
||
1, GENERIC_READ);
|
||
cygwin32_attach_handle_to_fd ("/dev/conout", 1,
|
||
GetStdHandle (STD_OUTPUT_HANDLE),
|
||
0, GENERIC_WRITE);
|
||
cygwin32_attach_handle_to_fd ("/dev/conout", 2,
|
||
GetStdHandle (STD_ERROR_HANDLE),
|
||
0, GENERIC_WRITE);
|
||
break;
|
||
}
|
||
}
|
||
#endif
|
||
}
|
||
|
||
static void
|
||
tk_command (cmd, from_tty)
|
||
char *cmd;
|
||
int from_tty;
|
||
{
|
||
int retval;
|
||
char *result;
|
||
struct cleanup *old_chain;
|
||
|
||
/* Catch case of no argument, since this will make the tcl interpreter dump core. */
|
||
if (cmd == NULL)
|
||
error_no_arg ("tcl command to interpret");
|
||
|
||
retval = Tcl_Eval (gdbtk_interp, cmd);
|
||
|
||
result = strdup (gdbtk_interp->result);
|
||
|
||
old_chain = make_cleanup (free, result);
|
||
|
||
if (retval != TCL_OK)
|
||
error (result);
|
||
|
||
printf_unfiltered ("%s\n", result);
|
||
|
||
do_cleanups (old_chain);
|
||
}
|
||
|