From: Michael Beck <beck@ipd.info.uni-karlsruhe.de>
Date: Mon, 18 Sep 2006 15:22:00 +0000 (+0000)
Subject: IA32: align the stack at 32bit
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=6501140c2ad8e4175d1330d60574af987f1d6ded;p=libfirm

IA32: align the stack at 32bit
ABI: align stack parameters
---

diff --git a/ir/be/beabi.c b/ir/be/beabi.c
index 401503c5c..3d28942a7 100644
--- a/ir/be/beabi.c
+++ b/ir/be/beabi.c
@@ -407,11 +407,12 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp, i
 	for(i = 0; i < n_params; ++i) {
 		be_abi_call_arg_t *arg = get_call_arg(call, 0, i);
 		assert(arg);
-		if(arg->on_stack) {
-			stack_size += arg->space_before;
-			stack_size =  round_up2(stack_size, arg->alignment);
-			stack_size += get_type_size_bytes(get_method_param_type(mt, i));
-			stack_size += arg->space_after;
+		if (arg->on_stack) {
+			int arg_size = get_type_size_bytes(get_method_param_type(mt, i));
+
+			stack_size += round_up2(arg->space_before, arg->alignment);
+			stack_size += round_up2(arg_size, arg->alignment);
+			stack_size += round_up2(arg->space_after, arg->alignment);
 			obstack_int_grow(obst, i);
 			n_pos++;
 		}
diff --git a/ir/be/ia32/bearch_ia32.c b/ir/be/ia32/bearch_ia32.c
index 692f49b75..711c341ad 100644
--- a/ir/be/ia32/bearch_ia32.c
+++ b/ir/be/ia32/bearch_ia32.c
@@ -1623,7 +1623,8 @@ static void ia32_get_call_abi(const void *self, ir_type *method_type, be_abi_cal
 
 	/* set stack parameters */
 	for (i = stack_idx; i < n; i++) {
-		be_abi_call_param_stack(abi, i, 1, 0, 0);
+		/* parameters on the stack are 32 bit aligned */
+		be_abi_call_param_stack(abi, i, 4, 0, 0);
 	}