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: /* this code was kindly donated by Eric J. Korpela */
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: static inline int is_386() 
cannam@95: {
cannam@95: #ifdef _MSC_VER
cannam@95:     unsigned int result,tst;
cannam@95:     _asm {
cannam@95:         pushfd
cannam@95:         pop eax
cannam@95:         mov edx,eax
cannam@95:         xor eax,40000h
cannam@95:         push eax
cannam@95:         popfd
cannam@95:         pushfd
cannam@95:         pop eax
cannam@95:         push edx
cannam@95:         popfd
cannam@95:         mov tst,edx
cannam@95:         mov result,eax
cannam@95:     }
cannam@95: #else
cannam@95:     register unsigned int result,tst;
cannam@95:     __asm__ (
cannam@95:         "pushfl\n\t"
cannam@95:         "popl %0\n\t"
cannam@95:         "movl %0,%1\n\t"
cannam@95:         "xorl $0x40000,%0\n\t"
cannam@95:         "pushl %0\n\t"
cannam@95:         "popfl\n\t"
cannam@95:         "pushfl\n\t"
cannam@95:         "popl %0\n\t"
cannam@95:         "pushl %1\n\t"
cannam@95:         "popfl"
cannam@95:     : "=r" (result), "=r" (tst) /* output */
cannam@95:     :  /* no inputs */
cannam@95:     );
cannam@95: #endif
cannam@95:     return (result == tst);
cannam@95: }
cannam@95: 
cannam@95: static inline int has_cpuid() 
cannam@95: {
cannam@95: #ifdef _MSC_VER
cannam@95:     unsigned int result,tst;
cannam@95:     _asm {
cannam@95:         pushfd
cannam@95:         pop eax
cannam@95:         mov edx,eax
cannam@95:         xor eax,200000h
cannam@95:         push eax
cannam@95:         popfd
cannam@95:         pushfd
cannam@95:         pop eax
cannam@95:         push edx
cannam@95:         popfd
cannam@95:         mov tst,edx
cannam@95:         mov result,eax
cannam@95:     }
cannam@95: #else
cannam@95:     register unsigned int result,tst;
cannam@95:     __asm__ (
cannam@95:         "pushfl\n\t"
cannam@95:         "pop %0\n\t"
cannam@95:         "movl %0,%1\n\t"
cannam@95:         "xorl $0x200000,%0\n\t"
cannam@95:         "pushl %0\n\t"
cannam@95:         "popfl\n\t"
cannam@95:         "pushfl\n\t"
cannam@95:         "popl %0\n\t"
cannam@95:         "pushl %1\n\t"
cannam@95:         "popfl"
cannam@95:     : "=r" (result), "=r" (tst) /* output */
cannam@95:     : /* no inputs */
cannam@95:     );
cannam@95: #endif
cannam@95:     return (result != tst);
cannam@95: }
cannam@95: 
cannam@95: static inline int cpuid_edx(int op)
cannam@95: {
cannam@95: #    ifdef _MSC_VER
cannam@95:      int result;
cannam@95:      _asm {
cannam@95: 	  push ebx
cannam@95:           mov eax,op
cannam@95:           cpuid
cannam@95:           mov result,edx
cannam@95:           pop ebx
cannam@95:      }
cannam@95:      return result;
cannam@95: #    else
cannam@95:      int eax, ecx, edx;
cannam@95: 
cannam@95:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
cannam@95: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
cannam@95: 	     : "a" (op));
cannam@95:      return edx;
cannam@95: #    endif
cannam@95: }
cannam@95: 
cannam@95: static inline int cpuid_ecx(int op)
cannam@95: {
cannam@95: #    ifdef _MSC_VER
cannam@95:      int result;
cannam@95:      _asm {
cannam@95: 	  push ebx
cannam@95:           mov eax,op
cannam@95:           cpuid
cannam@95:           mov result,ecx
cannam@95:           pop ebx
cannam@95:      }
cannam@95:      return result;
cannam@95: #    else
cannam@95:      int eax, ecx, edx;
cannam@95: 
cannam@95:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
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:      int veax, vedx;
cannam@95:      _asm {
cannam@95:           mov ecx,op
cannam@95: #    if defined(__INTEL_COMPILER) || (_MSC_VER >= 1600)
cannam@95:           xgetbv
cannam@95: #    else
cannam@95:           __emit 15
cannam@95:           __emit 1
cannam@95:           __emit 208
cannam@95: #    endif
cannam@95:           mov veax,eax
cannam@95:           mov vedx,edx
cannam@95:      }
cannam@95:      return veax;
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: }