extern char registers[];
-/* Hook for `exec_file_command' command to call. */
+/* Local function declarations. */
-void (*exec_file_display_hook) PARAMS ((char *)) = NULL;
+static void call_extra_exec_file_hooks PARAMS ((char *filename));
+
+/* You can have any number of hooks for `exec_file_command' command to call.
+ If there's only one hook, it is set in exec_file_display hook.
+ If there are two or more hooks, they are set in exec_file_extra_hooks[],
+ and exec_file_display_hook is set to a function that calls all of them.
+ This extra complexity is needed to preserve compatibility with
+ old code that assumed that only one hook could be set, and which called
+ exec_file_display_hook directly. */
+
+typedef void (*hook_type) PARAMS ((char *));
+
+hook_type exec_file_display_hook; /* the original hook */
+static hook_type *exec_file_extra_hooks; /* array of additional hooks */
+static int exec_file_hook_count = 0; /* size of array */
/* Binary file diddling handle for the core file. */
}
\f
+/* If there are two or more functions that wish to hook into exec_file_command,
+ * this function will call all of the hook functions. */
+
+static void
+call_extra_exec_file_hooks (filename)
+ char *filename;
+{
+ int i;
+
+ for (i = 0; i < exec_file_hook_count; i++)
+ (*exec_file_extra_hooks[i])(filename);
+}
+
/* Call this to specify the hook for exec_file_command to call back.
This is called from the x-window display code. */
specify_exec_file_hook (hook)
void (*hook) PARAMS ((char *));
{
- exec_file_display_hook = hook;
+ hook_type *new_array;
+
+ if (exec_file_display_hook != NULL)
+ {
+ /* There's already a hook installed. Arrange to have both it
+ * and the subsequent hooks called. */
+ if (exec_file_hook_count == 0)
+ {
+ /* If this is the first extra hook, initialize the hook array. */
+ exec_file_extra_hooks = (hook_type *) xmalloc (sizeof(hook_type));
+ exec_file_extra_hooks[0] = exec_file_display_hook;
+ exec_file_display_hook = call_extra_exec_file_hooks;
+ exec_file_hook_count = 1;
+ }
+
+ /* Grow the hook array by one and add the new hook to the end.
+ Yes, it's inefficient to grow it by one each time but since
+ this is hardly ever called it's not a big deal. */
+ exec_file_hook_count++;
+ new_array =
+ (hook_type *) xrealloc (exec_file_extra_hooks,
+ exec_file_hook_count * sizeof(hook_type));
+ exec_file_extra_hooks = new_array;
+ exec_file_extra_hooks[exec_file_hook_count - 1] = hook;
+ }
+ else
+ exec_file_display_hook = hook;
}
/* The exec file must be closed before running an inferior.