/* Startup code for Insight Copyright 1994, 1995, 1996, 1997, 1998, 2001, 2002 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 "inferior.h" #include "symfile.h" #include "objfiles.h" #include "gdbcore.h" #include "tracepoint.h" #include "demangle.h" #include "version.h" #include "cli-out.h" #include "top.h" #include "annotate.h" #if defined(_WIN32) || defined(__CYGWIN__) #define WIN32_LEAN_AND_MEAN #include #endif /* tcl header files includes varargs.h unless HAS_STDARG is defined, but gdb uses stdarg.h, so make sure HAS_STDARG is defined. */ #define HAS_STDARG 1 #include #include #include #include "guitcl.h" #include "gdbtk.h" #include #include #include #include #include #include "gdb_string.h" #include "dis-asm.h" #include "gdbcmd.h" #ifdef __CYGWIN32__ #include /* for cygwin32_attach_handle_to_fd */ #endif extern void _initialize_gdbtk (void); /* For unix natives, we use a timer to periodically keep the gui alive. See comments before x_event. */ static sigset_t nullsigmask; static struct sigaction act1, act2; static struct itimerval it_on, it_off; static void x_event_wrapper (int signo) { x_event (signo); } /* * This variable controls the interaction with an external editor. */ char *external_editor_command = NULL; extern int Tktable_Init (Tcl_Interp * interp); static void gdbtk_init (char *); void gdbtk_interactive (void); static void cleanup_init (void *ignore); static void tk_command (char *, int); static int target_should_use_timer (struct target_ops *t); int target_is_native (struct target_ops *t); int gdbtk_test (char *); /* 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; int gdbtk_disable_fputs = 1; #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 (unsigned int size) { return xmalloc (size); } char * TclpRealloc (char *ptr, unsigned int size) { return xrealloc (ptr, size); } void TclpFree (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, *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); xvasprintf (&buf, fmt, args); va_end (args); v[0] = "dbug"; v[1] = priority; v[2] = buf; merge = Tcl_Merge (3, v); if (Tcl_Eval (gdbtk_interp, merge) != TCL_OK) Tcl_BackgroundError (gdbtk_interp); Tcl_Free (merge); free(buf); } /* * 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 (void *ignore) { 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); */ } /* Start a timer which will keep the GUI alive while in target_wait. */ void gdbtk_start_timer () { static int first = 1; if (first) { /* first time called, set up all the structs */ first = 0; sigemptyset (&nullsigmask); act1.sa_handler = x_event_wrapper; 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 (target_should_use_timer (¤t_target)) { if (!gdbtk_timer_going) { sigaction (SIGALRM, &act1, NULL); setitimer (ITIMER_REAL, &it_on, NULL); gdbtk_timer_going = 1; } } return; } /* Stop the timer if it is running. */ void gdbtk_stop_timer () { if (gdbtk_timer_going) { gdbtk_timer_going = 0; setitimer (ITIMER_REAL, &it_off, NULL); sigaction (SIGALRM, &act2, NULL); } return; } /* Should this target use the timer? See comments before x_event for the logic behind all this. */ static int target_should_use_timer (struct target_ops *t) { return target_is_native (t); } /* Is T a native target? */ int target_is_native (struct target_ops *t) { char *name = t->to_shortname; if (STREQ (name, "exec") || STREQ (name, "hpux-threads") || STREQ (name, "child") || STREQ (name, "procfs") || STREQ (name, "solaris-threads") || STREQ (name, "linuxthreads") || STREQ (name, "multi-thread")) return 1; return 0; } /* gdbtk_init installs this function as a final cleanup. */ static void gdbtk_cleanup (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 (char *argv0) { struct cleanup *old_chain; char *s; int element_count; char **exec_path; CONST char *internal_exec_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) { init_ui_hook = NULL; return; } #endif old_chain = make_cleanup (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"); /* We need to check if we are being run from a bin directory, if not then we may have to set some environment variables. */ internal_exec_name = Tcl_GetNameOfExecutable (); Tcl_SplitPath ((char *) internal_exec_name, &element_count, &exec_path); if (strcmp (exec_path[element_count - 2], "bin") != 0) { /* We check to see if TCL_LIBRARY, TK_LIBRARY, ITCL_LIBRARY, ITK_LIBRARY, TIX_LIBRARY and maybe a couple other environment variables have been set (we don't want to override the User's settings). If the *_LIBRARY variable is not set, point it at the source directory. */ static char set_libs_path_script[] = "\ set srcDir [file dirname [file dirname $env(TCL_LIBRARY)]];\n\ \ if {![info exists env(TK_LIBRARY)]} {\n\ set env(TK_LIBRARY) [file join $srcDir tk library]\n\ }\n\ \ if {![info exists env(ITCL_LIBRARY)]} {\n\ set env(ITCL_LIBRARY) [file join $srcDir itcl itcl library]\n\ }\n\ \ if {![info exists env(ITK_LIBRARY)]} {\n\ set env(ITK_LIBRARY) [file join $srcDir itcl itk library]\n\ }\n\ \ if {![info exists env(IWIDGETS_LIBRARY)]} {\n\ set env(IWIDGETS_LIBRARY)\ [file join $srcDir itcl iwidgets3.0.0 generic]\n\ }\n\ \ if {![info exists env(TIX_LIBRARY)]} {\n\ set env(TIX_LIBRARY) [file join $srcDir tix library]\n\ }\n\ \ if {![info exists env(GDBTK_LIBRARY)]} {\n\ set env(GDBTK_LIBRARY) [file join $srcDir gdb gdbtk library]\n\ }\n\ \ # Append the directory with the itcl pkg index\n\ if {[info exists env(TCLLIBPATH)]} {\n\ append env(TCLLIBPATH) :[file joing $srcDir itcl]\n\ } else {\n\ set env(TCLLIBPATH) [file join $srcDir itcl]\n\ }\n\ \ # We also need to append the iwidgets library path.\n\ # Unfortunately, there is no IWIDGETS_LIBRARY.\n\ set IWIDGETS_LIBRARY [file join $srcDir itcl iwidgets3.0.0 generic]\n"; Tcl_Obj *commandObj; /* Before we can run our script we must set TCL_LIBRARY. */ if (Tcl_GetVar2 (gdbtk_interp, "env", "TCL_LIBRARY", TCL_GLOBAL_ONLY) == NULL) { int i, count; char *src_dir = SRC_DIR; char **src_path; char **lib_path; Tcl_DString lib_dstring; Tcl_DStringInit (&lib_dstring); #ifdef __CYGWIN__ /* SRC_DIR from configure is a posix path. Tcl really needs a windows path. */ src_dir = (char *) alloca (cygwin_posix_to_win32_path_list_buf_size (SRC_DIR)); cygwin_posix_to_win32_path_list (SRC_DIR, src_dir); #endif Tcl_SplitPath (src_dir, &count, &src_path); /* Append tcl/library to src_dir (src_dir=/foo/bar/gdb) */ lib_path = (char **) alloca ((count + 2) * sizeof (char *)); for (i = 0; i < count - 1; i++) lib_path[i] = src_path[i]; lib_path[i++] = "tcl"; lib_path[i++] = "library"; Tcl_JoinPath (i, lib_path, &lib_dstring); /* Set TCL_LIBRARY */ Tcl_SetVar2 (gdbtk_interp, "env", "TCL_LIBRARY", Tcl_DStringValue (&lib_dstring) , TCL_GLOBAL_ONLY); Tcl_DStringFree (&lib_dstring); Tcl_Free ((char *) src_path); } commandObj = Tcl_NewStringObj (set_libs_path_script, -1); Tcl_IncrRefCount (commandObj); Tcl_EvalObj (gdbtk_interp, commandObj); Tcl_DecrRefCount (commandObj); } Tcl_Free ((char *) exec_path); 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 */ xasprintf (&s, "%d", inhibit_gdbinit); Tcl_SetVar2 (gdbtk_interp, "GDBStartup", "inhibit_prefs", s, TCL_GLOBAL_ONLY); free(s); /* Note: Tcl_SetVar2() treats the value as read-only (making a copy). Unfortunatly it does not mark the parameter as ``const''. */ Tcl_SetVar2 (gdbtk_interp, "GDBStartup", "host_name", (char*) host_name, TCL_GLOBAL_ONLY); Tcl_SetVar2 (gdbtk_interp, "GDBStartup", "target_name", (char*) target_name, 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"); if (ide_create_shell_execute_command (gdbtk_interp) != TCL_OK) error ("cygwin shell execute command initialization failed"); #endif /* Only for testing -- and only when it can't be done any other way. */ if (cyg_create_warp_pointer_command (gdbtk_interp) != TCL_OK) error ("warp_pointer command initialization failed"); /* * 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, "Insight", 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 variable for external editor: */ if (external_editor_command != NULL) { Tcl_SetVar (gdbtk_interp, "external_editor_command", external_editor_command, 0); xfree (external_editor_command); external_editor_command = NULL; } /* close old output and send new to GDBTK */ ui_file_delete (gdb_stdout); ui_file_delete (gdb_stderr); gdb_stdout = gdbtk_fileopen (); gdb_stderr = gdbtk_fileopen (); gdb_stdlog = gdbtk_fileopen (); gdb_stdtarg = gdbtk_fileopen (); uiout = cli_out_new (gdb_stdout); #ifdef __CYGWIN32__ (void) FreeConsole (); #endif /* 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 insight 1.0 {} main.tcl GDBTK_LIBRARY GDBTKLIBRARY\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 insight 1.0 {} main.tcl GDBTK_LIBRARY GDBTK_LIBRARY\n\ set Paths(appdir) $GDBTK_LIBRARY\n\ }\n\ gdbtk_find_main"; #endif /* NO_TCLPRO_DEBUGGER */ /* now enable gdbtk to parse the output from gdb */ gdbtk_disable_fputs = 0; 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); #ifdef _WIN32 MessageBox (NULL, msg, NULL, MB_OK | MB_ICONERROR | MB_TASKMODAL); #else fprintf (stderr,msg); #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 (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__ 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 (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 = xstrdup (gdbtk_interp->result); old_chain = make_cleanup (free, result); if (retval != TCL_OK) error (result); printf_unfiltered ("%s\n", result); do_cleanups (old_chain); }