[commit, arm] Handle inferior calls via pointers to typedef'ed function types

[Ulrich Weigand]

Hello,

on Thumb, observer.exp tests were failing because the inferior call
logic did not properly set the Thumb bit when passing function pointer
arguments, if the argument used a typedef'ed function type.

Fixed by adding a check_typdef call as appropriate.

Tested on armv7l-linux-gnueabi with no regressions, fixes observer.exp.

Committed to mainline and 7.2 branch.

Bye,
Ulrich


ChangeLog:

	* arm-tdep.c (arm_push_dummy_call): Handle pointers to
	typedef'ed function types correctly.

Index: gdb/arm-tdep.c
===================================================================
RCS file: /cvs/src/src/gdb/arm-tdep.c,v
retrieving revision 1.304
diff -u -p -r1.304 arm-tdep.c
--- gdb/arm-tdep.c	27 May 2010 19:06:12 -0000	1.304
+++ gdb/arm-tdep.c	14 Aug 2010 00:21:55 -0000
@@ -2144,7 +2144,7 @@ arm_push_dummy_call (struct gdbarch *gdb
 	 the THUMB bit in it.  */
       if (TYPE_CODE_PTR == typecode
 	  && target_type != NULL
-	  && TYPE_CODE_FUNC == TYPE_CODE (target_type))
+	  && TYPE_CODE_FUNC == TYPE_CODE (check_typedef (target_type)))
 	{
 	  CORE_ADDR regval = extract_unsigned_integer (val, len, byte_order);
 	  if (arm_pc_is_thumb (regval))
-- 
  Dr. Ulrich Weigand
  GNU Toolchain for Linux on System z and Cell BE
  Ulrich.Weigand@de.ibm.com