x86-64: chkstk, alloca

2009-07-18 22:06:54 +02:00
parent c0fc0fa0c4
commit fc977d56c9
8 changed files with 104 additions and 59 deletions
--- 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