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Move __cpuid() definition for gcc in types.h

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This will allow to use the function also for other
purposes then detecting POPCNT.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2010-03-14 11:16:25 +01:00
parent eaed535c5f
commit 92bada1a32
2 changed files with 18 additions and 14 deletions
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14
src/bitcount.h
View File

@@ -29,8 +29,6 @@
#if defined(__INTEL_COMPILER) && defined(USE_POPCNT) // Intel compiler
#include <nmmintrin.h>
inline bool cpu_has_popcnt() {
int CPUInfo[4] = {-1};
@@ -42,8 +40,6 @@ inline bool cpu_has_popcnt() {
#elif defined(_MSC_VER) && defined(USE_POPCNT) // Microsoft compiler
#include <intrin.h>
inline bool cpu_has_popcnt() {
int CPUInfo[4] = {-1};
@@ -55,16 +51,6 @@ inline bool cpu_has_popcnt() {
#elif defined(__GNUC__) && defined(USE_POPCNT) // Gcc compiler
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));
}
inline bool cpu_has_popcnt() {
unsigned int eax, ebx, ecx, edx;

18
src/types.h
View File

@@ -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)