From 8cdb79543823f1da894e18c6487a8d4d9cfdb1c3 Mon Sep 17 00:00:00 2001
From: Zhang Xianyi <traits.zhang@gmail.com>
Date: Tue, 22 Jan 2013 00:18:21 +0800
Subject: [PATCH] Refs #187. Use binary code for xgetbv, which is compatible
 with old compiler.

---
 cpuid_x86.c             | 3 ++-
 driver/others/dynamic.c | 3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/cpuid_x86.c b/cpuid_x86.c
index b3352244b..a19dedeee 100644
--- a/cpuid_x86.c
+++ b/cpuid_x86.c
@@ -116,8 +116,9 @@ static inline int have_excpuid(void){
 
 #ifndef NO_AVX
 static inline void xgetbv(int op, int * eax, int * edx){
+  //Use binary code for xgetbv
   __asm__ __volatile__
-    ("xgetbv": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
+    (".byte 0x0f, 0x01, 0xd0": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
 }
 #endif
 
diff --git a/driver/others/dynamic.c b/driver/others/dynamic.c
index 28fdd30d8..b6f27d0ad 100644
--- a/driver/others/dynamic.c
+++ b/driver/others/dynamic.c
@@ -78,8 +78,9 @@ extern gotoblas_t  gotoblas_SANDYBRIDGE;
 
 #ifndef NO_AVX
 static inline void xgetbv(int op, int * eax, int * edx){
+  //Use binary code for xgetbv
   __asm__ __volatile__
-    ("xgetbv": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
+    (".byte 0x0f, 0x01, 0xd0": "=a" (*eax), "=d" (*edx) : "c" (op) : "cc");
 }
 #endif