gdb: get_frame_language now takes a frame parameter.

As part of a drive to remove deprecated_safe_get_selected_frame, make
the get_frame_language function take a frame parameter.  Given the name
of the function this actually seems to make a lot of sense.

The task of fetching a suitable frame is then passed to the calling
functions.  For get_frame_language there are not many callers, these are
updated to get the selected frame in a suitable way.

gdb/ChangeLog:

	* language.c (show_language_command): Find selected frame before
	asking for the language of that frame.
	(set_language_command): Likewise.
	* language.h (get_frame_language): Add frame parameter.
	* stack.c (get_frame_language): Add frame parameter, assert
	parameter is not NULL, update comment and reindent.
	* top.c (check_frame_language_change): Pass the selected frame
	into get_frame_language.

1 files changed, 29 insertions, 32 deletions

diff --git a/gdb/stack.c b/gdb/stack.c
index b4cfdbd..31a723d 100644
--- a/gdb/stack.c
+++ b/gdb/stack.c
@@ -2560,46 +2560,43 @@ func_command (char *arg, int from_tty)
     select_and_print_frame (frame);
 }
 
-/* Gets the language of the current frame.  */
+/* Gets the language of FRAME.  */
 
 enum language
-get_frame_language (void)
+get_frame_language (struct frame_info *frame)
 {
-  struct frame_info *frame = deprecated_safe_get_selected_frame ();
+  CORE_ADDR pc = 0;
+  int pc_p = 0;
 
-  if (frame)
-    {
-      CORE_ADDR pc = 0;
-      int pc_p = 0;
+  gdb_assert (frame!= NULL);
 
-      /* We determine the current frame language by looking up its
-         associated symtab.  To retrieve this symtab, we use the frame
-         PC.  However we cannot use the frame PC as is, because it
-         usually points to the instruction following the "call", which
-         is sometimes the first instruction of another function.  So
-         we rely on get_frame_address_in_block(), it provides us with
-         a PC that is guaranteed to be inside the frame's code
-         block.  */
+    /* We determine the current frame language by looking up its
+       associated symtab.  To retrieve this symtab, we use the frame
+       PC.  However we cannot use the frame PC as is, because it
+       usually points to the instruction following the "call", which
+       is sometimes the first instruction of another function.  So
+       we rely on get_frame_address_in_block(), it provides us with
+       a PC that is guaranteed to be inside the frame's code
+       block.  */
 
-      TRY
-	{
-	  pc = get_frame_address_in_block (frame);
-	  pc_p = 1;
-	}
-      CATCH (ex, RETURN_MASK_ERROR)
-	{
-	  if (ex.error != NOT_AVAILABLE_ERROR)
-	    throw_exception (ex);
-	}
-      END_CATCH
+  TRY
+    {
+      pc = get_frame_address_in_block (frame);
+      pc_p = 1;
+    }
+  CATCH (ex, RETURN_MASK_ERROR)
+    {
+      if (ex.error != NOT_AVAILABLE_ERROR)
+	throw_exception (ex);
+    }
+  END_CATCH
 
-      if (pc_p)
-	{
-	  struct compunit_symtab *cust = find_pc_compunit_symtab (pc);
+  if (pc_p)
+    {
+      struct compunit_symtab *cust = find_pc_compunit_symtab (pc);
 
-	  if (cust != NULL)
-	    return compunit_language (cust);
-	}
+      if (cust != NULL)
+	return compunit_language (cust);
     }
 
   return language_unknown;