From fc977d56c90b6c6a54b7e831b5c88e37f54a5cae Mon Sep 17 00:00:00 2001
From: grischka <grischka>
Date: Sat, 18 Jul 2009 22:06:54 +0200
Subject: x86-64: chkstk, alloca

---
 lib/alloca86_64.S | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

(limited to 'lib/alloca86_64.S')

diff --git a/lib/alloca86_64.S b/lib/alloca86_64.S
index 684a3e9..13c4672 100644
--- a/lib/alloca86_64.S
+++ b/lib/alloca86_64.S
@@ -7,13 +7,16 @@
 
 alloca:
     pop     %rdx
+#ifdef TCC_TARGET_PE
+    mov     %rcx,%rax
+#else
     mov     %rdi,%rax
+#endif
     add     $15,%rax
     and     $-16,%rax
     jz      p3
 
 #ifdef TCC_TARGET_PE
-    /* XXX: not tested */
 p1:
     cmp     $4096,%rax
     jle     p2
@@ -26,6 +29,10 @@ p2:
 
     sub     %rax,%rsp
     mov     %rsp,%rax
+#ifdef TCC_TARGET_PE
+    add     $32,%rax
+#endif
+
 p3:
     push    %rdx
     ret
-- 
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