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/* Startup code for gdbtk.
Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
Written by Stu Grossman <grossman@cygnus.com> of Cygnus Support.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "symtab.h"
#include "inferior.h"
#include "command.h"
#include "bfd.h"
#include "symfile.h"
#include "objfiles.h"
#include "target.h"
#include "gdbcore.h"
#include "tracepoint.h"
#include "demangle.h"
#ifdef _WIN32
#include <winuser.h>
#endif
#include <sys/stat.h>
#include <tcl.h>
#include <tk.h>
#include <itcl.h>
#include <tix.h>
#include "guitcl.h"
#include "gdbtk.h"
#ifdef ANSI_PROTOTYPES
#include <stdarg.h>
#else
#include <varargs.h>
#endif
#include <signal.h>
#include <fcntl.h>
#include <unistd.h>
#include <setjmp.h>
#include "top.h"
#include <sys/ioctl.h>
#include "gdb_string.h"
#include "dis-asm.h"
#include <stdio.h>
#include "gdbcmd.h"
#include "annotate.h"
#include <sys/time.h>
#ifdef __CYGWIN32__
#include <sys/cygwin.h> /* for cygwin32_attach_handle_to_fd */
#endif
/* For Cygwin, we use a timer to periodically check for Windows
messages. FIXME: It would be better to not poll, but to instead
rewrite the target_wait routines to serve as input sources.
Unfortunately, that will be a lot of work. */
static sigset_t nullsigmask;
static struct sigaction act1, act2;
static struct itimerval it_on, it_off;
/*
* These two variables control the interaction with an external editor.
* If enable_external_editor is set at startup, BEFORE Gdbtk_Init is run
* then the Tcl variable of the same name will be set, and a command will
* called external_editor_command will be invoked to call out to the
* external editor. We give a dummy version here to warn if it is not set.
*/
int enable_external_editor = 0;
char * external_editor_command = "tk_dialog .warn-external \\\n\
\"No command is specified.\nUse --tclcommand <tcl/file> or --external-editor <cmd> to specify a new command\" 0 Ok";
extern int Tktable_Init PARAMS ((Tcl_Interp *interp));
static void gdbtk_init PARAMS ((char *));
void gdbtk_interactive PARAMS ((void));
static void cleanup_init PARAMS ((int));
static void tk_command PARAMS ((char *, int));
void gdbtk_add_hooks PARAMS ((void));
int gdbtk_test PARAMS ((char *));
/*
* gdbtk_fputs is defined in the gdbtk_hooks.c, but we need it here
* because we delay adding this hook till all the setup is done. That
* way errors will go to stdout.
*/
extern void gdbtk_fputs PARAMS ((const char *, GDB_FILE *));
/* Handle for TCL interpreter */
Tcl_Interp *gdbtk_interp = NULL;
static int gdbtk_timer_going = 0;
/* linked variable used to tell tcl what the current thread is */
int gdb_context = 0;
/* This variable is true when the inferior is running. See note in
* gdbtk.h for details.
*/
int running_now;
/* This variable holds the name of a Tcl file which should be sourced by the
interpreter when it goes idle at startup. Used with the testsuite. */
static char *gdbtk_source_filename = NULL;
#ifndef _WIN32
/* Supply malloc calls for tcl/tk. We do not want to do this on
Windows, because Tcl_Alloc is probably in a DLL which will not call
the mmalloc routines.
We also don't need to do it for Tcl/Tk8.1, since we locally changed the
allocator to use malloc & free. */
#if TCL_MAJOR_VERSION == 8 && TCL_MINOR_VERSION == 0
char *
TclpAlloc (size)
unsigned int size;
{
return xmalloc (size);
}
char *
TclpRealloc (ptr, size)
char *ptr;
unsigned int size;
{
return xrealloc (ptr, size);
}
void
TclpFree(ptr)
char *ptr;
{
free (ptr);
}
#endif /* TCL_VERSION == 8.0 */
#endif /* ! _WIN32 */
#ifdef _WIN32
/* On Windows, if we hold a file open, other programs can't write to
* it. In particular, we don't want to hold the executable open,
* because it will mean that people have to get out of the debugging
* session in order to remake their program. So we close it, although
* this will cost us if and when we need to reopen it.
*/
void
close_bfds ()
{
struct objfile *o;
ALL_OBJFILES (o)
{
if (o->obfd != NULL)
bfd_cache_close (o->obfd);
}
if (exec_bfd != NULL)
bfd_cache_close (exec_bfd);
}
#endif /* _WIN32 */
/* TclDebug (const char *fmt, ...) works just like printf() but
* sends the output to the GDB TK debug window.
* Not for normal use; just a convenient tool for debugging
*/
void
TclDebug (char level, const char *fmt, ...)
{
va_list args;
char buf[512], *v[3], *merge, *priority;
switch (level)
{
case 'W':
priority = "W";
break;
case 'E':
priority = "E";
break;
case 'X':
priority = "X";
break;
default:
priority = "I";
}
va_start (args, fmt);
v[0] = "dbug";
v[1] = priority;
v[2] = buf;
vsprintf (buf, fmt, args);
va_end (args);
merge = Tcl_Merge (3, v);
if (Tcl_Eval (gdbtk_interp, merge) != TCL_OK)
Tcl_BackgroundError(gdbtk_interp);
Tcl_Free (merge);
}
/*
* The rest of this file contains the start-up, and event handling code for gdbtk.
*/
/*
* This cleanup function is added to the cleanup list that surrounds the Tk
* main in gdbtk_init. It deletes the Tcl interpreter.
*/
static void
cleanup_init (ignored)
int ignored;
{
if (gdbtk_interp != NULL)
Tcl_DeleteInterp (gdbtk_interp);
gdbtk_interp = NULL;
}
/* Come here during long calculations to check for GUI events. Usually invoked
via the QUIT macro. */
void
gdbtk_interactive ()
{
/* Tk_DoOneEvent (TK_DONT_WAIT|TK_IDLE_EVENTS); */
}
void
gdbtk_start_timer ()
{
static int first = 1;
/*TclDebug ("Starting timer....");*/
if (first)
{
/* first time called, set up all the structs */
first = 0;
sigemptyset (&nullsigmask);
act1.sa_handler = x_event;
act1.sa_mask = nullsigmask;
act1.sa_flags = 0;
act2.sa_handler = SIG_IGN;
act2.sa_mask = nullsigmask;
act2.sa_flags = 0;
it_on.it_interval.tv_sec = 0;
it_on.it_interval.tv_usec = 250000; /* .25 sec */
it_on.it_value.tv_sec = 0;
it_on.it_value.tv_usec = 250000;
it_off.it_interval.tv_sec = 0;
it_off.it_interval.tv_usec = 0;
it_off.it_value.tv_sec = 0;
it_off.it_value.tv_usec = 0;
}
if (!gdbtk_timer_going)
{
sigaction (SIGALRM, &act1, NULL);
setitimer (ITIMER_REAL, &it_on, NULL);
gdbtk_timer_going = 1;
}
}
void
gdbtk_stop_timer ()
{
if (gdbtk_timer_going)
{
gdbtk_timer_going = 0;
/*TclDebug ("Stopping timer.");*/
setitimer (ITIMER_REAL, &it_off, NULL);
sigaction (SIGALRM, &act2, NULL);
}
}
/* gdbtk_init installs this function as a final cleanup. */
static void
gdbtk_cleanup (dummy)
PTR dummy;
{
Tcl_Eval (gdbtk_interp, "gdbtk_cleanup");
Tcl_Finalize ();
}
/* Initialize gdbtk. This involves creating a Tcl interpreter,
* defining all the Tcl commands that the GUI will use, pointing
* all the gdb "hooks" to the correct functions,
* and setting the Tcl auto loading environment so that we can find all
* the Tcl based library files.
*/
static void
gdbtk_init ( argv0 )
char *argv0;
{
struct cleanup *old_chain;
int found_main;
char s[5];
Tcl_Obj *auto_path_elem, *auto_path_name;
/* If there is no DISPLAY environment variable, Tk_Init below will fail,
causing gdb to abort. If instead we simply return here, gdb will
gracefully degrade to using the command line interface. */
#ifndef _WIN32
if (getenv ("DISPLAY") == NULL)
return;
#endif
old_chain = make_cleanup ((make_cleanup_func) cleanup_init, 0);
/* First init tcl and tk. */
Tcl_FindExecutable (argv0);
gdbtk_interp = Tcl_CreateInterp ();
#ifdef TCL_MEM_DEBUG
Tcl_InitMemory (gdbtk_interp);
#endif
if (!gdbtk_interp)
error ("Tcl_CreateInterp failed");
if (Tcl_Init(gdbtk_interp) != TCL_OK)
error ("Tcl_Init failed: %s", gdbtk_interp->result);
/* Set up some globals used by gdb to pass info to gdbtk
for start up options and the like */
sprintf (s, "%d", inhibit_gdbinit);
Tcl_SetVar2 (gdbtk_interp, "GDBStartup", "inhibit_prefs", s, TCL_GLOBAL_ONLY);
make_final_cleanup (gdbtk_cleanup, NULL);
/* Initialize the Paths variable. */
if (ide_initialize_paths (gdbtk_interp, "") != TCL_OK)
error ("ide_initialize_paths failed: %s", gdbtk_interp->result);
if (Tk_Init(gdbtk_interp) != TCL_OK)
error ("Tk_Init failed: %s", gdbtk_interp->result);
if (Itcl_Init(gdbtk_interp) == TCL_ERROR)
error ("Itcl_Init failed: %s", gdbtk_interp->result);
Tcl_StaticPackage(gdbtk_interp, "Itcl", Itcl_Init,
(Tcl_PackageInitProc *) NULL);
if (Itk_Init(gdbtk_interp) == TCL_ERROR)
error ("Itk_Init failed: %s", gdbtk_interp->result);
Tcl_StaticPackage(gdbtk_interp, "Itk", Itk_Init,
(Tcl_PackageInitProc *) NULL);
if (Tix_Init(gdbtk_interp) != TCL_OK)
error ("Tix_Init failed: %s", gdbtk_interp->result);
Tcl_StaticPackage(gdbtk_interp, "Tix", Tix_Init,
(Tcl_PackageInitProc *) NULL);
if (Tktable_Init(gdbtk_interp) != TCL_OK)
error ("Tktable_Init failed: %s", gdbtk_interp->result);
Tcl_StaticPackage(gdbtk_interp, "Tktable", Tktable_Init,
(Tcl_PackageInitProc *) NULL);
/*
* These are the commands to do some Windows Specific stuff...
*/
#ifdef __CYGWIN32__
if (ide_create_messagebox_command (gdbtk_interp) != TCL_OK)
error ("messagebox command initialization failed");
/* On Windows, create a sizebox widget command */
if (ide_create_sizebox_command (gdbtk_interp) != TCL_OK)
error ("sizebox creation failed");
if (ide_create_winprint_command (gdbtk_interp) != TCL_OK)
error ("windows print code initialization failed");
if (ide_create_win_grab_command (gdbtk_interp) != TCL_OK)
error ("grab support command initialization failed");
/* Path conversion functions. */
if (ide_create_cygwin_path_command (gdbtk_interp) != TCL_OK)
error ("cygwin path command initialization failed");
#else
/* for now, this testing function is Unix only */
if (cyg_create_warp_pointer_command (gdbtk_interp) != TCL_OK)
error ("warp_pointer command initialization failed");
#endif
/*
* This adds all the Gdbtk commands.
*/
if (Gdbtk_Init(gdbtk_interp) != TCL_OK)
{
error("Gdbtk_Init failed: %s", gdbtk_interp->result);
}
Tcl_StaticPackage(gdbtk_interp, "Gdbtk", Gdbtk_Init, NULL);
/* This adds all the hooks that call up from the bowels of gdb
* back into Tcl-land...
*/
gdbtk_add_hooks();
/* Add a back door to Tk from the gdb console... */
add_com ("tk", class_obscure, tk_command,
"Send a command directly into tk.");
/*
* Set the variables for external editor:
*/
Tcl_SetVar (gdbtk_interp, "enable_external_editor", enable_external_editor ? "1" : "0", 0);
Tcl_SetVar (gdbtk_interp, "external_editor_command", external_editor_command, 0);
/* find the gdb tcl library and source main.tcl */
{
#ifdef NO_TCLPRO_DEBUGGER
static char script[] ="\
proc gdbtk_find_main {} {\n\
global Paths GDBTK_LIBRARY\n\
rename gdbtk_find_main {}\n\
tcl_findLibrary gdb 1.0 {} main.tcl GDBTK_LIBRARY GDBTK_LIBRARY gdbtcl2 gdbtcl {}\n\
set Paths(appdir) $GDBTK_LIBRARY\n\
}\n\
gdbtk_find_main";
#else
static char script[] ="\
proc gdbtk_find_main {} {\n\
global Paths GDBTK_LIBRARY env\n\
rename gdbtk_find_main {}\n\
if {[info exists env(DEBUG_STUB)]} {\n\
source $env(DEBUG_STUB)\n\
debugger_init\n\
set debug_startup 1\n\
} else {\n\
set debug_startup 0\n\
}\n\
tcl_findLibrary gdb 1.0 {} main.tcl GDBTK_LIBRARY GDBTK_LIBRARY gdbtcl2 gdbtcl {} $debug_startup\n\
set Paths(appdir) $GDBTK_LIBRARY\n\
}\n\
gdbtk_find_main";
#endif /* NO_TCLPRO_DEBUGGER */
/* fputs_unfiltered_hook = NULL; */ /* Force errors to stdout/stderr */
/*
* Set the variables for external editor, do this before eval'ing main.tcl
* since the value is used there...
*/
Tcl_SetVar (gdbtk_interp, "enable_external_editor",
enable_external_editor ? "1" : "0", 0);
Tcl_SetVar (gdbtk_interp, "external_editor_command",
external_editor_command, 0);
fputs_unfiltered_hook = gdbtk_fputs;
if (Tcl_GlobalEval (gdbtk_interp, (char *) script) != TCL_OK)
{
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 ("");
}
}
/* 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));
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);
}
/* Local variables: */
/* change-log-default-name: "ChangeLog-gdbtk" */
/* End: */
|