From 6ee366e765483f6b48537d97fc81ae56f13d1b7f Mon Sep 17 00:00:00 2001
From: James Lyon <jamesly0n@hotmail.com>
Date: Fri, 26 Apr 2013 16:42:12 +0100
Subject: Fixed x86-64 long double passing.

long double arguments require 16-byte alignment on the stack, which
requires adjustment when the the stack offset is not an evven number of
8-byte words.
---
 lib/libtcc1.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/libtcc1.c b/lib/libtcc1.c
index 159c401..53dbec4 100644
--- a/lib/libtcc1.c
+++ b/lib/libtcc1.c
@@ -645,9 +645,10 @@ void *__va_start(void *fp)
 
 void *__va_arg(struct __va_list_struct *ap,
                enum __va_arg_type arg_type,
-               int size)
+               int size, int align)
 {
     size = (size + 7) & ~7;
+    align = (align + 7) & ~7;
     switch (arg_type) {
     case __va_gen_reg:
         if (ap->gp_offset < 48) {
@@ -668,6 +669,7 @@ void *__va_arg(struct __va_list_struct *ap,
     case __va_stack:
     use_overflow_area:
         ap->overflow_arg_area += size;
+        ap->overflow_arg_area = (char*)((long long)(ap->overflow_arg_area + align - 1) & -(long long)align);
         return ap->overflow_arg_area - size;
 
     default:
-- 
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