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changeset 901:dc71e32091d8

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Adjust stack before pushing arguments. Fixes new stack alignment code on 32-bit targets
author Michael Pavone <pavone@retrodev.com>
date Fri, 27 Nov 2015 10:48:13 -0800
parents 30efd12b1be1
children 6011409ded0d
files gen_x86.c
diffstat 1 files changed, 6 insertions(+), 6 deletions(-) [+]
line wrap: on
line diff
--- a/gen_x86.c	Fri Nov 27 10:47:35 2015 -0800
+++ b/gen_x86.c	Fri Nov 27 10:48:13 2015 -0800
@@ -2111,18 +2111,18 @@
 #else
 #define stack_args num_args
 #endif
-	for (int i = stack_args -1; i >= 0; i--)
-	{
-		push_r(code, arg_arr[i]);
-	}
-	uint32_t stack_off_call = code->stack_off + sizeof(void *);
+	uint32_t stack_off_call = code->stack_off + sizeof(void *) * (stack_args + 1);
 	uint32_t adjust = 0;
 	if (stack_off_call & 0xF) {
 		adjust = 16 - (stack_off_call & 0xF);
 		sub_ir(code, adjust, RSP, SZ_PTR);
 		code->stack_off += adjust;
 	}
-
+	for (int i = stack_args -1; i >= 0; i--)
+	{
+		push_r(code, arg_arr[i]);
+	}
+	
 	return stack_args * sizeof(void *) + adjust;
 }