/* Startup code for gdbtk. Copyright 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc. Written by Stu Grossman 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 #endif #include #include #include #include #include #include "guitcl.h" #include "gdbtk.h" #ifdef ANSI_PROTOTYPES #include #else #include #endif #include #include #include #include #include "top.h" #include #include "gdb_string.h" #include "dis-asm.h" #include #include "gdbcmd.h" #include "annotate.h" #include #ifdef __CYGWIN32__ #include /* 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 or --external-editor 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: */