re PR target/54220 ([avr] Potential stack corruption in naked functions at -O0)

	PR target/54220
	* config/avr/avr.c (TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS): New
	define to...
	(avr_allocate_stack_slots_for_args): ...this new static function.

From-SVN: r190914

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d034c10..70aecdd 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2012-09-04  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>
+
+       PR target/54220
+       * config/avr/avr.c (TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS): New
+       define to...
+       (avr_allocate_stack_slots_for_args): ...this new static function.
+
 2012-09-04  Christophe Lyon  <christophe.lyon@linaro.org>
 
        * config/arm/arm.c (arm_expand_builtin): Replace gen_rtx_CONST_INT

diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c
index c175330..bab13a4 100644 (file)
--- a/gcc/config/avr/avr.c
+++ b/gcc/config/avr/avr.c
@@ -700,6 +700,16 @@ avr_regs_to_save (HARD_REG_SET *set)
   return count;
 }
 
+
+/* Implement `TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS' */
+
+static bool
+avr_allocate_stack_slots_for_args (void)
+{
+  return !cfun->machine->is_naked;
+}
+
+
 /* Return true if register FROM can be eliminated via register TO.  */
 
 static bool
@@ -11339,6 +11349,9 @@ avr_fold_builtin (tree fndecl, int n_args ATTRIBUTE_UNUSED, tree *arg,
 #undef  TARGET_CAN_ELIMINATE
 #define TARGET_CAN_ELIMINATE avr_can_eliminate
 
+#undef  TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS
+#define TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS avr_allocate_stack_slots_for_args
+
 #undef TARGET_WARN_FUNC_RETURN
 #define TARGET_WARN_FUNC_RETURN avr_warn_func_return