arm.h (CONDITIONAL_REGISTER_USAGE): Reserve arm frame pointer when thumb backtracing is on.

	* config/arm/arm.h (CONDITIONAL_REGISTER_USAGE): Reserve arm frame
	pointer when thumb backtracing is on.

	* config/fp-bit.c (abort): Revert change.

From-SVN: r98872

gcc/ChangeLog

+2005-04-27  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* config/arm/arm.h (CONDITIONAL_REGISTER_USAGE): Reserve arm frame
+	pointer when thumb backtracing is on.
+
+	* config/fp-bit.c (abort): Revert change.
+
 2005-04-27  Ian Lance Taylor  <ian@airs.com>
 
 	* c-semantics.c (add_stmt): Don't test STATEMENT_CODE_P.

gcc/config/arm/arm.h

@@ -926,7 +926,9 @@ extern const char * structure_size_string;
      _interwork_r11_call_via_rN().  Making the register global	\
      is an easy way of ensuring that it remains valid for all	\
      calls.  */							\
-  if (TARGET_APCS_FRAME || TARGET_CALLER_INTERWORKING)		\
+  if (TARGET_APCS_FRAME || TARGET_CALLER_INTERWORKING		\
+      || (target_flags & (THUMB_FLAG_LEAF_BACKTRACE		\
+			  | THUMB_FLAG_BACKTRACE)))		\
     {								\
       fixed_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1;		\
       call_used_regs[ARM_HARD_FRAME_POINTER_REGNUM] = 1;	\

gcc/config/fp-bit.c

@@ -81,7 +81,7 @@ Boston, MA 02111-1307, USA.  */
 #endif
 
 #ifdef EXTENDED_FLOAT_STUBS
-extern __attribute__ ((__noreturn__)) void abort (void);
+extern void abort (void);
 void __extendsfxf2 (void) { abort(); }
 void __extenddfxf2 (void) { abort(); }
 void __truncxfdf2 (void) { abort(); }