* symfile.c: Define two new hooks for symbol reading: "pre_add_symbol_hook"

and "post_add_symbol_hook". These hooks are called before we begin reading
        symbols, and after we finish.
        (generic_load): Use new symbol reading hooks and get rid of compiler warning.
        * gdbtk.c (gdbtk_init): Add hooks for pre- and post-symbol reading.
        (gdbtk_pre_add_symbol): New function: the pre-add-symbol hook.
        (gdbtk_post_add_symbol): New function: the post-add-symbol hook.
        (find_file_in_dir): New function. Moved the guts of gdb_find_file_command
        into here to allow its use by others.
        (gdb_loc): Use find_file_in_dir to return the real path to the file
        (or "N/A" if we can't find it).
        * configure.in (TIX_LIB_EXT): Define new variable for those special cases
        when TCL_SHLIB_SUFFIX is not enough to specify the dependency.
        * configure: Regenerate.

gdb/ChangeLog-gdbtk

@@ -1,3 +1,23 @@
+Wed Jan 22  10:37:02 1998  Keith Seitz  <keiths@onions.cygnus.com>
+
+	* symfile.c: Define two new hooks for symbol reading: "pre_add_symbol_hook"
+ 	and "post_add_symbol_hook". These hooks are called before we begin reading
+	symbols, and after we finish.
+	(generic_load): Use new symbol reading hooks and get rid of compiler warning.
+
+	* gdbtk.c (gdbtk_init): Add hooks for pre- and post-symbol reading.
+	(gdbtk_pre_add_symbol): New function: the pre-add-symbol hook.
+	(gdbtk_post_add_symbol): New function: the post-add-symbol hook.
+	(find_file_in_dir): New function. Moved the guts of gdb_find_file_command
+	into here to allow its use by others.
+	(gdb_loc): Use find_file_in_dir to return the real path to the file
+	(or "N/A" if we can't find it).
+
+	* configure.in (TIX_LIB_EXT): Define new variable for those special cases
+	when TCL_SHLIB_SUFFIX is not enough to specify the dependency.
+
+	* configure: Regenerate.
+
 Fri Jan 23 07:47:06 1998  Fred Fish  <fnf@cygnus.com>
 
 	* Makefile.in (uninstall): Remove installed gdbtcl dir, if one

gdb/configure

@@ -3120,9 +3120,18 @@ fi
 	   esac 
 	   if test "${TCL_SHARED_BUILD}" = "1"; then
 		TIX_LIB_EXT="${TCL_SHLIB_SUFFIX}"
+
+	        # Can't win them all: SunOS 4 (others?) appends a version
+                # number after the ".so"
+	        case "${host}" in
+	        *-*-sunos4*)
+	            TIX_LIB_EXT="${TIX_LIB_EXT}.1.0" ;;
+                esac
+	   
 	   else
 		TIX_LIB_EXT=".a"
 	   fi
+
 	   if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
 		TIXLIB="-L${tixdir} -ltix${TIXVERSION}"
 		TIX_DEPS="${tixdir}/libtix${TIXVERSION}${TIX_LIB_EXT}"
@@ -3305,7 +3314,7 @@ links="${links} nm.h"
 fi
 # start-sanitize-gdbtk
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:3309: checking whether ln -s works" >&5
+echo "configure:3318: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3340,19 +3349,19 @@ fi
 
 
 echo $ac_n "checking for Cygwin32 environment""... $ac_c" 1>&6
-echo "configure:3344: checking for Cygwin32 environment" >&5
+echo "configure:3353: checking for Cygwin32 environment" >&5
 if eval "test \"`echo '$''{'am_cv_cygwin32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3349 "configure"
+#line 3358 "configure"
 #include "confdefs.h"
 
 int main() {
 return __CYGWIN32__;
 ; return 0; }
 EOF
-if { (eval echo configure:3356: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3365: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   am_cv_cygwin32=yes
 else
@@ -3369,19 +3378,19 @@ echo "$ac_t""$am_cv_cygwin32" 1>&6
 CYGWIN32=
 test "$am_cv_cygwin32" = yes && CYGWIN32=yes
 echo $ac_n "checking for Mingw32 environment""... $ac_c" 1>&6
-echo "configure:3373: checking for Mingw32 environment" >&5
+echo "configure:3382: checking for Mingw32 environment" >&5
 if eval "test \"`echo '$''{'am_cv_mingw32'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3378 "configure"
+#line 3387 "configure"
 #include "confdefs.h"
 
 int main() {
 return __MINGW32__;
 ; return 0; }
 EOF
-if { (eval echo configure:3385: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3394: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   am_cv_mingw32=yes
 else
@@ -3400,7 +3409,7 @@ test "$am_cv_mingw32" = yes && MINGW32=yes
 
 
 echo $ac_n "checking for executable suffix""... $ac_c" 1>&6
-echo "configure:3404: checking for executable suffix" >&5
+echo "configure:3413: checking for executable suffix" >&5
 if eval "test \"`echo '$''{'am_cv_exeext'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else

gdb/configure.in

@@ -361,9 +361,18 @@ if test "${enable_gdbtk}" = "yes"; then
 	   esac 
 	   if test "${TCL_SHARED_BUILD}" = "1"; then
 		TIX_LIB_EXT="${TCL_SHLIB_SUFFIX}"
+
+	        # Can't win them all: SunOS 4 (others?) appends a version
+                # number after the ".so"
+	        case "${host}" in
+	        *-*-sunos4*)
+	            TIX_LIB_EXT="${TIX_LIB_EXT}.1.0" ;;
+                esac
+	   
 	   else
 		TIX_LIB_EXT=".a"
 	   fi
+
 	   if test "${TCL_LIB_VERSIONS_OK}" = "ok"; then
 		TIXLIB="-L${tixdir} -ltix${TIXVERSION}"
 		TIX_DEPS="${tixdir}/libtix${TIXVERSION}${TIX_LIB_EXT}"

gdb/gdbtk.c

@@ -88,6 +88,8 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 int gdbtk_load_hash PARAMS ((char *, unsigned long));
 int (*ui_load_progress_hook) PARAMS ((char *, unsigned long));
+void (*pre_add_symbol_hook) PARAMS ((char *));
+void (*post_add_symbol_hook) PARAMS ((void));
 
 static void null_routine PARAMS ((int));
 static void gdbtk_flush PARAMS ((FILE *));
@@ -142,10 +144,13 @@ static int gdb_get_tracepoint_info PARAMS ((ClientData, Tcl_Interp *, int, Tcl_O
 static int gdb_actions_command PARAMS ((ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]));
 static int gdb_prompt_command PARAMS ((ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]));
 static int gdb_find_file_command PARAMS ((ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]));
+static char *find_file_in_dir PARAMS ((char *));
 static int gdb_get_tracepoint_list PARAMS ((ClientData, Tcl_Interp *, int, Tcl_Obj *CONST objv[]));
 static void gdbtk_create_tracepoint PARAMS ((struct tracepoint *));
 static void gdbtk_delete_tracepoint PARAMS ((struct tracepoint *));
 static void tracepoint_notify PARAMS ((struct tracepoint *, const char *));
+void gdbtk_pre_add_symbol PARAMS ((char *));
+void gdbtk_post_add_symbol PARAMS ((void));
 
 /* Handle for TCL interpreter */
 
@@ -484,7 +489,7 @@ gdb_get_breakpoint_info (clientData, interp, argc, argv)
 
   filename = symtab_to_filename (sal.symtab);
   if (filename == NULL)
-    filename = "N/A";
+    filename = "";
   Tcl_DStringAppendElement (result_ptr, filename);
   find_pc_partial_function (b->address, &funcname, NULL, NULL);
   Tcl_DStringAppendElement (result_ptr, funcname);
@@ -613,7 +618,9 @@ gdb_loc (clientData, interp, argc, argv)
   find_pc_partial_function (pc, &funcname, NULL, NULL);
   Tcl_DStringAppendElement (result_ptr, funcname);
 
+  /* Would it be better to use "find_file_in_dir"? */
   filename = symtab_to_filename (sal.symtab);
+
   if (filename == NULL)
     filename = "N/A";
   Tcl_DStringAppendElement (result_ptr, filename);
@@ -1955,6 +1962,8 @@ gdbtk_init ( argv0 )
   readline_hook = gdbtk_readline;
   readline_end_hook = gdbtk_readline_end;
   ui_load_progress_hook = gdbtk_load_hash;
+  pre_add_symbol_hook   = gdbtk_pre_add_symbol;
+  post_add_symbol_hook  = gdbtk_post_add_symbol;
   create_tracepoint_hook = gdbtk_create_tracepoint;
   delete_tracepoint_hook = gdbtk_delete_tracepoint;
 
@@ -2688,7 +2697,6 @@ gdb_find_file_command (clientData, interp, objc, objv)
   Tcl_Obj *CONST objv[];
 {
   char *file, *filename;
-  struct symtab *st = NULL;
 
   if (objc != 2)
     {
@@ -2698,28 +2706,59 @@ gdb_find_file_command (clientData, interp, objc, objv)
       return TCL_ERROR;
     }
 
-  /* try something simple first */
   file  = Tcl_GetStringFromObj (objv[1], NULL);
-  if (access (file, R_OK) == 0)
+  filename = find_file_in_dir (file);
-    {
+  
-      Tcl_SetObjResult (interp, Tcl_NewStringObj (file, -1));
+  if (filename == NULL)
-      return TCL_OK;
+    Tcl_SetResult (interp, "", TCL_STATIC);
-    }
+  else
+    Tcl_SetObjResult (interp, Tcl_NewStringObj (filename, -1));
 
-  /* We really need a symtab for this to work... */
+  return TCL_OK;
-  st = lookup_symtab (file);
+}
-  if (st != NULL)
+
+static char *
+find_file_in_dir (file)
+     char *file;
+{
+  struct symtab *st = NULL;
+
+  if (file != NULL)
     {
-      filename = symtab_to_filename (st);
+      /* try something simple first */
-      if (filename != NULL)
+      if (access (file, R_OK) == 0)
+        return file;
+      
+      /* We really need a symtab for this to work... */
+      st = lookup_symtab (file);
+      if (st != NULL)
         {
-          Tcl_SetObjResult (interp, Tcl_NewStringObj (filename, -1));
+          file = symtab_to_filename (st);
-          return TCL_OK;
+          if (file != NULL)
+            return file;
         }
     }
+  
+  return NULL;
+}
 
-  Tcl_SetResult (interp, "", TCL_STATIC);
+/* This hook is called whenever we are ready to load a symbol file so that
-  return TCL_OK;
+   the UI can notify the user... */
+void
+gdbtk_pre_add_symbol (name)
+  char *name;
+{
+  char command[256];
+
+  sprintf (command, "gdbtk_tcl_pre_add_symbol %s", name);
+  Tcl_Eval (interp, command);
+}
+
+/* This hook is called whenever we finish loading a symbol file. */
+void
+gdbtk_post_add_symbol ()
+{
+  Tcl_Eval (interp, "gdbtk_tcl_post_add_symbol");
 }
 
 /* Come here during initialize_all_files () */