$OpenBSD: patch-liboil_liboilcpu-x86_c,v 1.1 2010/07/21 05:51:41 ajacoutot Exp $

Fix cpuid function on x86-64.
(705916007fba0a845229a02dc6474cb523eff150)
https://bugs.freedesktop.org/show_bug.cgi?id=28956

--- liboil/liboilcpu-x86.c.orig	Thu Feb 26 14:42:45 2009
+++ liboil/liboilcpu-x86.c	Tue Jul 20 17:36:45 2010
@@ -162,13 +162,10 @@ get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint
 static void
 get_cpuid (uint32_t op, uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d)
 {
+  *a = op;
   __asm__ (
-      "  pushq %%rbx\n"
       "  cpuid\n"
-      "  mov %%ebx, %%esi\n"
-      "  popq %%rbx\n"
-      : "=a" (*a), "=S" (*b), "=c" (*c), "=d" (*d)
-      : "0" (op));
+      : "+a" (*a), "=b" (*b), "=c" (*c), "=d" (*d));
 }
 #endif
 
@@ -185,7 +182,7 @@ oil_cpu_detect_cpuid (void)
 {
   uint32_t eax, ebx, ecx, edx;
   uint32_t level;
-  char vendor[13] = { 0 };
+  char vendor[13+4] = { 0 };
   int ret;
 
   oil_fault_check_enable ();