Use emit for xgetbv for compatibility with vs2005, vs2008 and vs2010 without sp1.

BUG=none
TEST=none
R=nfullagar@google.com, tpsiaki@google.com

Review URL: https://webrtc-codereview.appspot.com/3089005

git-svn-id: http://libyuv.googlecode.com/svn/trunk@833 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 832
+Version: 833
 License: BSD
 License File: LICENSE
 

include/libyuv/planar_functions.h

@@ -72,6 +72,7 @@ int YUY2ToI422(const uint8* src_yuy2, int src_stride_yuy2,
                int width, int height);
 
 // Convert UYVY to I422.
+LIBYUV_API
 int UYVYToI422(const uint8* src_uyvy, int src_stride_uyvy,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_u, int dst_stride_u,

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 832
+#define LIBYUV_VERSION 833
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT

source/cpu_id.cc

@@ -60,15 +60,22 @@ void CpuId(uint32 eax, uint32 ecx, uint32* cpu_info) {
   cpu_info[3] = edx;
 #endif  // defined(_MSC_VER)
 }
+
 #if !defined(__native_client__)
 #define HAS_XGETBV
 // X86 CPUs have xgetbv to detect OS saves high parts of ymm registers.
 int TestOsSaveYmm() {
-  uint32 xcr0;
-#if defined(_MSC_VER)
+  uint32 xcr0 = 0u;
+#if defined(_MSC_VER) && (_MSC_FULL_VER >= 160040219)
   xcr0 = static_cast<uint32>(_xgetbv(0));  // VS2010 SP1 required.
-#else
-  asm volatile ("xgetbv" : "=a" (xcr0) : "c" (0) : "%edx" );  // NOLINT
+#elif defined(_M_IX86)
+  __asm {
+    xor        ecx, ecx    // xcr 0
+    _asm _emit 0x0f _asm _emit 0x01 _asm _emit 0xd0  // For VS2010 and earlier.
+    mov        xcr0, eax
+  }
+#elif defined(__i386__) || defined(__x86_64__)
+  asm volatile (".byte 0x0f, 0x01, 0xd0" : "=a" (xcr0) : "c" (0) : "%edx" );
 #endif  // defined(_MSC_VER)
   return((xcr0 & 6) == 6);  // Is ymm saved?
 }