Chris@10: /*
Chris@10:  * Copyright (c) 2003, 2007-11 Matteo Frigo
Chris@10:  * Copyright (c) 2003, 2007-11 Massachusetts Institute of Technology
Chris@10:  *
Chris@10:  * This program is free software; you can redistribute it and/or modify
Chris@10:  * it under the terms of the GNU General Public License as published by
Chris@10:  * the Free Software Foundation; either version 2 of the License, or
Chris@10:  * (at your option) any later version.
Chris@10:  *
Chris@10:  * This program is distributed in the hope that it will be useful,
Chris@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@10:  * GNU General Public License for more details.
Chris@10:  *
Chris@10:  * You should have received a copy of the GNU General Public License
Chris@10:  * along with this program; if not, write to the Free Software
Chris@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@10:  *
Chris@10:  */
Chris@10: 
Chris@10: 
Chris@10: /* this code was kindly donated by Eric J. Korpela */
Chris@10: 
Chris@10: #ifdef _MSC_VER
Chris@10: #ifndef inline
Chris@10: #define inline __inline
Chris@10: #endif
Chris@10: #endif
Chris@10: 
Chris@10: static inline int is_386() 
Chris@10: {
Chris@10: #ifdef _MSC_VER
Chris@10:     unsigned int result,tst;
Chris@10:     _asm {
Chris@10:         pushfd
Chris@10:         pop eax
Chris@10:         mov edx,eax
Chris@10:         xor eax,40000h
Chris@10:         push eax
Chris@10:         popfd
Chris@10:         pushfd
Chris@10:         pop eax
Chris@10:         push edx
Chris@10:         popfd
Chris@10:         mov tst,edx
Chris@10:         mov result,eax
Chris@10:     }
Chris@10: #else
Chris@10:     register unsigned int result,tst;
Chris@10:     __asm__ (
Chris@10:         "pushfl\n\t"
Chris@10:         "popl %0\n\t"
Chris@10:         "movl %0,%1\n\t"
Chris@10:         "xorl $0x40000,%0\n\t"
Chris@10:         "pushl %0\n\t"
Chris@10:         "popfl\n\t"
Chris@10:         "pushfl\n\t"
Chris@10:         "popl %0\n\t"
Chris@10:         "pushl %1\n\t"
Chris@10:         "popfl"
Chris@10:     : "=r" (result), "=r" (tst) /* output */
Chris@10:     :  /* no inputs */
Chris@10:     );
Chris@10: #endif
Chris@10:     return (result == tst);
Chris@10: }
Chris@10: 
Chris@10: static inline int has_cpuid() 
Chris@10: {
Chris@10: #ifdef _MSC_VER
Chris@10:     unsigned int result,tst;
Chris@10:     _asm {
Chris@10:         pushfd
Chris@10:         pop eax
Chris@10:         mov edx,eax
Chris@10:         xor eax,200000h
Chris@10:         push eax
Chris@10:         popfd
Chris@10:         pushfd
Chris@10:         pop eax
Chris@10:         push edx
Chris@10:         popfd
Chris@10:         mov tst,edx
Chris@10:         mov result,eax
Chris@10:     }
Chris@10: #else
Chris@10:     register unsigned int result,tst;
Chris@10:     __asm__ (
Chris@10:         "pushfl\n\t"
Chris@10:         "pop %0\n\t"
Chris@10:         "movl %0,%1\n\t"
Chris@10:         "xorl $0x200000,%0\n\t"
Chris@10:         "pushl %0\n\t"
Chris@10:         "popfl\n\t"
Chris@10:         "pushfl\n\t"
Chris@10:         "popl %0\n\t"
Chris@10:         "pushl %1\n\t"
Chris@10:         "popfl"
Chris@10:     : "=r" (result), "=r" (tst) /* output */
Chris@10:     : /* no inputs */
Chris@10:     );
Chris@10: #endif
Chris@10:     return (result != tst);
Chris@10: }
Chris@10: 
Chris@10: static inline int cpuid_edx(int op)
Chris@10: {
Chris@10: #    ifdef _MSC_VER
Chris@10:      int result;
Chris@10:      _asm {
Chris@10: 	  push ebx
Chris@10:           mov eax,op
Chris@10:           cpuid
Chris@10:           mov result,edx
Chris@10:           pop ebx
Chris@10:      }
Chris@10:      return result;
Chris@10: #    else
Chris@10:      int eax, ecx, edx;
Chris@10: 
Chris@10:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
Chris@10: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
Chris@10: 	     : "a" (op));
Chris@10:      return edx;
Chris@10: #    endif
Chris@10: }
Chris@10: 
Chris@10: static inline int cpuid_ecx(int op)
Chris@10: {
Chris@10: #    ifdef _MSC_VER
Chris@10:      int result;
Chris@10:      _asm {
Chris@10: 	  push ebx
Chris@10:           mov eax,op
Chris@10:           cpuid
Chris@10:           mov result,ecx
Chris@10:           pop ebx
Chris@10:      }
Chris@10:      return result;
Chris@10: #    else
Chris@10:      int eax, ecx, edx;
Chris@10: 
Chris@10:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
Chris@10: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
Chris@10: 	     : "a" (op));
Chris@10:      return ecx;
Chris@10: #    endif
Chris@10: }
Chris@10: 
Chris@10: static inline int xgetbv_eax(int op)
Chris@10: {
Chris@10: #    ifdef _MSC_VER
Chris@10:      int veax, vedx;
Chris@10:      _asm {
Chris@10:           mov ecx,op
Chris@10: #    if defined(__INTEL_COMPILER) || (_MSC_VER >= 1600)
Chris@10:           xgetbv
Chris@10: #    else
Chris@10:           __emit 15
Chris@10:           __emit 1
Chris@10:           __emit 208
Chris@10: #    endif
Chris@10:           mov veax,eax
Chris@10:           mov vedx,edx
Chris@10:      }
Chris@10:      return veax;
Chris@10: #    else
Chris@10:      int eax, edx;
Chris@10:      __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (op));
Chris@10:      return eax;
Chris@10: #endif
Chris@10: }