comparison src/fftw-3.3.5/simd-support/amd64-cpuid.h @ 42:2cd0e3b3e1fd

Current fftw source

+/*
+ * 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, op, 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
+}