cannam@95: /*
cannam@95:  * Copyright (c) 2003, 2007-11 Matteo Frigo
cannam@95:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
cannam@95:  *
cannam@95:  * This program is free software; you can redistribute it and/or modify
cannam@95:  * it under the terms of the GNU General Public License as published by
cannam@95:  * the Free Software Foundation; either version 2 of the License, or
cannam@95:  * (at your option) any later version.
cannam@95:  *
cannam@95:  * This program is distributed in the hope that it will be useful,
cannam@95:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
cannam@95:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
cannam@95:  * GNU General Public License for more details.
cannam@95:  *
cannam@95:  * You should have received a copy of the GNU General Public License
cannam@95:  * along with this program; if not, write to the Free Software
cannam@95:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
cannam@95:  *
cannam@95:  */
cannam@95: 
cannam@95: 
cannam@95: #ifdef _MSC_VER
cannam@95: #ifndef inline
cannam@95: #define inline __inline
cannam@95: #endif
cannam@95: #endif
cannam@95: 
cannam@95: #ifdef _MSC_VER
cannam@95: #include <intrin.h>
cannam@95: #if (_MSC_VER >= 1600) && !defined(__INTEL_COMPILER)
cannam@95: #include <immintrin.h>
cannam@95: #endif
cannam@95: #endif
cannam@95: 
cannam@95: static inline int cpuid_ecx(int op)
cannam@95: {
cannam@95: #    ifdef _MSC_VER
cannam@95: #    ifdef __INTEL_COMPILER
cannam@95:      int result;
cannam@95:      _asm {
cannam@95: 	  push rbx
cannam@95:           mov eax,op
cannam@95:           cpuid
cannam@95:           mov result,ecx
cannam@95:           pop rbx
cannam@95:      }
cannam@95:      return result;
cannam@95: #    else
cannam@95:      int cpu_info[4];
cannam@95:      __cpuid(cpu_info,op);
cannam@95:      return cpu_info[2];
cannam@95: #    endif
cannam@95: #    else
cannam@95:      int eax, ecx, edx;
cannam@95: 
cannam@95:      __asm__("pushq %%rbx\n\tcpuid\n\tpopq %%rbx"
cannam@95: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
cannam@95: 	     : "a" (op));
cannam@95:      return ecx;
cannam@95: #    endif
cannam@95: }
cannam@95: 
cannam@95: static inline int xgetbv_eax(int op)
cannam@95: {
cannam@95: #    ifdef _MSC_VER
cannam@95: #    ifdef __INTEL_COMPILER
cannam@95:      int veax, vedx;
cannam@95:      _asm {
cannam@95:           mov ecx,op
cannam@95:           xgetbv
cannam@95:           mov veax,eax
cannam@95:           mov vedx,edx
cannam@95:      }
cannam@95:      return veax;
cannam@95: #    else
cannam@95: #    if defined(_MSC_VER) && (_MSC_VER >= 1600)
cannam@95:      unsigned __int64 result;
cannam@95:      result = _xgetbv(op);
cannam@95:      return (int)result;
cannam@95: #    else
cannam@95: #    error "Need at least Visual Studio 10 SP1 for AVX support"
cannam@95: #    endif
cannam@95: #    endif
cannam@95: #    else
cannam@95:      int eax, edx;
cannam@95:      __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (op));
cannam@95:      return eax;
cannam@95: #endif
cannam@95: }