expose __cpuid for gcc/visual c compatibility

BUG=none
TEST=none
Review URL: https://webrtc-codereview.appspot.com/574004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@258 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 256
+Version: 258
 License: BSD
 License File: LICENSE
 

include/libyuv/cpu_id.h

@@ -11,6 +11,29 @@
 #ifndef INCLUDE_LIBYUV_CPU_ID_H_
 #define INCLUDE_LIBYUV_CPU_ID_H_
 
+#ifdef _MSC_VER
+#include <intrin.h>  // For __cpuid()
+#endif
+
+// TODO(fbarchard): Use cpuid.h when gcc 4.4 is used on OSX and Linux.
+#if (defined(__pic__) || defined(__APPLE__)) && defined(__i386__)
+static __inline void __cpuid(int cpu_info[4], int info_type) {
+  asm volatile (
+    "mov %%ebx, %%edi                          \n"
+    "cpuid                                     \n"
+    "xchg %%edi, %%ebx                         \n"
+    : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
+    : "a"(info_type));
+}
+#elif defined(__i386__) || defined(__x86_64__)
+static __inline void __cpuid(int cpu_info[4], int info_type) {
+  asm volatile (
+    "cpuid                                     \n"
+    : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
+    : "a"(info_type));
+}
+#endif
+
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
@@ -51,3 +74,4 @@ void MaskCpuFlags(int enable_flags);
 #endif
 
 #endif  // INCLUDE_LIBYUV_CPU_ID_H_
+

include/libyuv/version.h

@@ -11,7 +11,7 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 256
+#define LIBYUV_VERSION 258
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_
 

source/cpu_id.cc

@@ -11,9 +11,6 @@
 #include "libyuv/cpu_id.h"
 
 #include <stdlib.h>  // For getenv()
-#ifdef _MSC_VER
-#include <intrin.h>  // For __cpuid()
-#endif
 
 // For ArmCpuCaps() but unittested on all platforms
 #include <stdio.h>
@@ -21,25 +18,6 @@
 
 #include "libyuv/basic_types.h"  // For CPU_X86
 
-// TODO(fbarchard): Use cpuid.h when gcc 4.4 is used on OSX and Linux.
-#if (defined(__pic__) || defined(__APPLE__)) && defined(__i386__)
-static __inline void __cpuid(int cpu_info[4], int info_type) {
-  asm volatile (
-    "mov %%ebx, %%edi                          \n"
-    "cpuid                                     \n"
-    "xchg %%edi, %%ebx                         \n"
-    : "=a"(cpu_info[0]), "=D"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
-    : "a"(info_type));
-}
-#elif defined(__i386__) || defined(__x86_64__)
-static __inline void __cpuid(int cpu_info[4], int info_type) {
-  asm volatile (
-    "cpuid                                     \n"
-    : "=a"(cpu_info[0]), "=b"(cpu_info[1]), "=c"(cpu_info[2]), "=d"(cpu_info[3])
-    : "a"(info_type));
-}
-#endif
-
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {

unit_test/cpu_test.cc

@@ -23,26 +23,48 @@ TEST_F(libyuvTest, TestVersion) {
 }
 
 TEST_F(libyuvTest, TestCpuHas) {
-#if LIBYUV_VERSION >= 236
   int has_x86 = TestCpuFlag(kCpuHasX86);
   printf("Has X86 %d\n", has_x86);
-#endif
   int has_sse2 = TestCpuFlag(kCpuHasSSE2);
   printf("Has SSE2 %d\n", has_sse2);
   int has_ssse3 = TestCpuFlag(kCpuHasSSSE3);
   printf("Has SSSE3 %d\n", has_ssse3);
-#if LIBYUV_VERSION >= 236
   int has_sse41 = TestCpuFlag(kCpuHasSSE41);
   printf("Has SSE4.1 %d\n", has_sse41);
-#endif
-#if LIBYUV_VERSION >= 238
   int has_arm = TestCpuFlag(kCpuHasARM);
   printf("Has ARM %d\n", has_arm);
-#endif
   int has_neon = TestCpuFlag(kCpuHasNEON);
   printf("Has NEON %d\n", has_neon);
 }
 
+// Known Vendor IDs are:
+// AuthenticAMD AMD processor
+// CentaurHauls Centaur processor
+// CyrixInstead Cyrix processor
+// GenuineIntel Intel processor
+// GenuineTMx86 Transmeta processor
+// Geode by NSC National Semiconductor processor
+// NexGenDriven NexGen processor
+// RiseRiseRise Rise Technology processor
+// SiS SiS SiS  SiS processor
+// UMC UMC UMC  UMC processor
+#if defined(__i386__) || defined(__x86_64__) || \
+    defined(_M_IX86) || defined(_M_X64)
+TEST_F(libyuvTest, TestCpuId) {
+  int has_x86 = TestCpuFlag(kCpuHasX86);
+  if (has_x86) {
+    int cpu_info[4];
+    __cpuid(cpu_info, 0);
+    cpu_info[0] = cpu_info[1];  // Reorder output
+    cpu_info[1] = cpu_info[3];
+    cpu_info[2] = cpu_info[2];
+    cpu_info[3] = 0;
+    printf("Cpu Vendor: %s\n", reinterpret_cast<char*>(&cpu_info[0]));
+    EXPECT_EQ(12, strlen(reinterpret_cast<char*>(&cpu_info[0])));
+  }
+}
+#endif
+
 // For testing purposes call the proc/cpuinfo parser directly
 extern "C" int ArmCpuCaps(const char* cpuinfoname);