Move __cpuid() definition for gcc in types.h

[stockfish] / src / types.h

diff --git a/src/types.h b/src/types.h
index a9badca0d1027538d60628cda45d87dc593ce58c..d91009df453748d6701ee607b177921368a7a60e 100644 (file)
--- a/src/types.h
+++ b/src/types.h
@@ -33,7 +33,7 @@ typedef __int16 int16;
 typedef unsigned __int16 uint16_t;
 typedef __int32 int32_t;
 typedef unsigned __int32 uint32_t;
-typedef __int64 int64;
+typedef __int64 int64_t;
 typedef unsigned __int64 uint64_t;
 
 typedef __int16 int16_t;
@@ -73,4 +73,22 @@ typedef uint64_t Bitboard;
 #define CACHE_LINE_ALIGNMENT  __attribute__ ((aligned(64)))
 #endif
 
+// Define a __cpuid() function for gcc compilers, for Intel and MSVC
+// is already available as an intrinsic.
+#if defined(__INTEL_COMPILER)
+#include <nmmintrin.h>
+#elif defined(_MSC_VER)
+#include <intrin.h>
+#elif defined(__GNUC__)
+inline void __cpuid(unsigned int op,
+                    unsigned int *eax, unsigned int *ebx,
+                    unsigned int *ecx, unsigned int *edx)
+{
+  *eax = op;
+  *ecx = 0;
+  __asm__("cpuid" : "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+                  : "0" (*eax), "2" (*ecx));
+}
+#endif
+
 #endif // !defined(TYPES_H_INCLUDED)