furnace/extern/fftw/simd-support/amd64-cpuid.h

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/*
* Copyright (c) 2003, 2007-14 Matteo Frigo
* Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
#ifdef _MSC_VER
#ifndef inline
#define inline __inline
#endif
#endif
#ifdef _MSC_VER
#include <intrin.h>
#if (_MSC_VER >= 1600) && !defined(__INTEL_COMPILER)
#include <immintrin.h>
#endif
#endif
/* cpuid version to get all registers. Donated by Erik Lindahl from Gromacs. */
static inline void
cpuid_all(int level, int ecxval, int *eax, int *ebx, int *ecx, int *edx)
{
# ifdef _MSC_VER
int CPUInfo[4];
#if (_MSC_VER > 1500) || (_MSC_VER == 1500 & _MSC_FULL_VER >= 150030729)
/* MSVC 9.0 SP1 or later */
__cpuidex(CPUInfo, level, ecxval);
#else
__cpuid(CPUInfo, level);
#endif
*eax = CPUInfo[0];
*ebx = CPUInfo[1];
*ecx = CPUInfo[2];
*edx = CPUInfo[3];
# else
/* Not MSVC */
*eax = level;
*ecx = ecxval;
*ebx = 0;
*edx = 0;
/* No need to save ebx if we are not in pic mode */
__asm__ ("cpuid \n\t"
: "+a" (*eax), "+b" (*ebx), "+c" (*ecx), "+d" (*edx));
# endif
}
static inline int cpuid_ecx(int op)
{
# ifdef _MSC_VER
# ifdef __INTEL_COMPILER
int result;
_asm {
push rbx
mov eax,op
cpuid
mov result,ecx
pop rbx
}
return result;
# else
int cpu_info[4];
__cpuid(cpu_info,op);
return cpu_info[2];
# endif
# else
int eax, ecx = 0, edx;
__asm__("pushq %%rbx\n\tcpuid\n\tpopq %%rbx"
: "=a" (eax), "+c" (ecx), "=d" (edx)
: "a" (op));
return ecx;
# endif
}
static inline int cpuid_ebx(int op)
{
# ifdef _MSC_VER
# ifdef __INTEL_COMPILER
int result;
_asm {
push rbx
mov eax,op
cpuid
mov result,ebx
pop rbx
}
return result;
# else
int cpu_info[4];
__cpuid(cpu_info,op);
return cpu_info[1];
# endif
# else
int eax, ecx = 0, edx;
__asm__("pushq %%rbx\n\tcpuid\nmov %%ebx,%%ecx\n\tpopq %%rbx"
: "=a" (eax), "+c" (ecx), "=d" (edx)
: "a" (op));
return ecx;
# endif
}
static inline int xgetbv_eax(int op)
{
# ifdef _MSC_VER
# ifdef __INTEL_COMPILER
int veax, vedx;
_asm {
mov ecx,op
xgetbv
mov veax,eax
mov vedx,edx
}
return veax;
# else
# if defined(_MSC_VER) && (_MSC_VER >= 1600)
unsigned __int64 result;
result = _xgetbv(op);
return (int)result;
# else
# error "Need at least Visual Studio 10 SP1 for AVX support"
# endif
# endif
# else
int eax, edx;
__asm__ (".byte 0x0f, 0x01, 0xd0" : "=a"(eax), "=d"(edx) : "c" (op));
return eax;
#endif
}