Chris@19: /*
Chris@19:  * Copyright (c) 2003, 2007-14 Matteo Frigo
Chris@19:  * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
Chris@19:  *
Chris@19:  * This program is free software; you can redistribute it and/or modify
Chris@19:  * it under the terms of the GNU General Public License as published by
Chris@19:  * the Free Software Foundation; either version 2 of the License, or
Chris@19:  * (at your option) any later version.
Chris@19:  *
Chris@19:  * This program is distributed in the hope that it will be useful,
Chris@19:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
Chris@19:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Chris@19:  * GNU General Public License for more details.
Chris@19:  *
Chris@19:  * You should have received a copy of the GNU General Public License
Chris@19:  * along with this program; if not, write to the Free Software
Chris@19:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Chris@19:  *
Chris@19:  */
Chris@19: 
Chris@19: 
Chris@19: /* this code was kindly donated by Eric J. Korpela */
Chris@19: 
Chris@19: #ifdef _MSC_VER
Chris@19: #ifndef inline
Chris@19: #define inline __inline
Chris@19: #endif
Chris@19: #endif
Chris@19: 
Chris@19: static inline int is_386() 
Chris@19: {
Chris@19: #ifdef _MSC_VER
Chris@19:     unsigned int result,tst;
Chris@19:     _asm {
Chris@19:         pushfd
Chris@19:         pop eax
Chris@19:         mov edx,eax
Chris@19:         xor eax,40000h
Chris@19:         push eax
Chris@19:         popfd
Chris@19:         pushfd
Chris@19:         pop eax
Chris@19:         push edx
Chris@19:         popfd
Chris@19:         mov tst,edx
Chris@19:         mov result,eax
Chris@19:     }
Chris@19: #else
Chris@19:     register unsigned int result,tst;
Chris@19:     __asm__ (
Chris@19:         "pushfl\n\t"
Chris@19:         "popl %0\n\t"
Chris@19:         "movl %0,%1\n\t"
Chris@19:         "xorl $0x40000,%0\n\t"
Chris@19:         "pushl %0\n\t"
Chris@19:         "popfl\n\t"
Chris@19:         "pushfl\n\t"
Chris@19:         "popl %0\n\t"
Chris@19:         "pushl %1\n\t"
Chris@19:         "popfl"
Chris@19:     : "=r" (result), "=r" (tst) /* output */
Chris@19:     :  /* no inputs */
Chris@19:     );
Chris@19: #endif
Chris@19:     return (result == tst);
Chris@19: }
Chris@19: 
Chris@19: static inline int has_cpuid() 
Chris@19: {
Chris@19: #ifdef _MSC_VER
Chris@19:     unsigned int result,tst;
Chris@19:     _asm {
Chris@19:         pushfd
Chris@19:         pop eax
Chris@19:         mov edx,eax
Chris@19:         xor eax,200000h
Chris@19:         push eax
Chris@19:         popfd
Chris@19:         pushfd
Chris@19:         pop eax
Chris@19:         push edx
Chris@19:         popfd
Chris@19:         mov tst,edx
Chris@19:         mov result,eax
Chris@19:     }
Chris@19: #else
Chris@19:     register unsigned int result,tst;
Chris@19:     __asm__ (
Chris@19:         "pushfl\n\t"
Chris@19:         "pop %0\n\t"
Chris@19:         "movl %0,%1\n\t"
Chris@19:         "xorl $0x200000,%0\n\t"
Chris@19:         "pushl %0\n\t"
Chris@19:         "popfl\n\t"
Chris@19:         "pushfl\n\t"
Chris@19:         "popl %0\n\t"
Chris@19:         "pushl %1\n\t"
Chris@19:         "popfl"
Chris@19:     : "=r" (result), "=r" (tst) /* output */
Chris@19:     : /* no inputs */
Chris@19:     );
Chris@19: #endif
Chris@19:     return (result != tst);
Chris@19: }
Chris@19: 
Chris@19: static inline int cpuid_edx(int op)
Chris@19: {
Chris@19: #    ifdef _MSC_VER
Chris@19:      int result;
Chris@19:      _asm {
Chris@19: 	  push ebx
Chris@19:           mov eax,op
Chris@19:           cpuid
Chris@19:           mov result,edx
Chris@19:           pop ebx
Chris@19:      }
Chris@19:      return result;
Chris@19: #    else
Chris@19:      int eax, ecx, edx;
Chris@19: 
Chris@19:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
Chris@19: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
Chris@19: 	     : "a" (op));
Chris@19:      return edx;
Chris@19: #    endif
Chris@19: }
Chris@19: 
Chris@19: static inline int cpuid_ecx(int op)
Chris@19: {
Chris@19: #    ifdef _MSC_VER
Chris@19:      int result;
Chris@19:      _asm {
Chris@19: 	  push ebx
Chris@19:           mov eax,op
Chris@19:           cpuid
Chris@19:           mov result,ecx
Chris@19:           pop ebx
Chris@19:      }
Chris@19:      return result;
Chris@19: #    else
Chris@19:      int eax, ecx, edx;
Chris@19: 
Chris@19:      __asm__("push %%ebx\n\tcpuid\n\tpop %%ebx"
Chris@19: 	     : "=a" (eax), "=c" (ecx), "=d" (edx)
Chris@19: 	     : "a" (op));
Chris@19:      return ecx;
Chris@19: #    endif
Chris@19: }
Chris@19: 
Chris@19: static inline int xgetbv_eax(int op)
Chris@19: {
Chris@19: #    ifdef _MSC_VER
Chris@19:      int veax, vedx;
Chris@19:      _asm {
Chris@19:           mov ecx,op
Chris@19: #    if defined(__INTEL_COMPILER) || (_MSC_VER >= 1600)
Chris@19:           xgetbv
Chris@19: #    else
Chris@19:           __emit 15
Chris@19:           __emit 1
Chris@19:           __emit 208
Chris@19: #    endif
Chris@19:           mov veax,eax
Chris@19:           mov vedx,edx
Chris@19:      }
Chris@19:      return veax;
Chris@19: #    else
Chris@19:      int eax, edx;
Chris@19:      __asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (op));
Chris@19:      return eax;
Chris@19: #endif
Chris@19: }