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1 #include "pfc-lite.h"
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2 #include "cpuid.h"
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3
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4
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5 #ifdef _MSC_VER
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6 #include <intrin.h>
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7 #endif
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8
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9 #if PFC_HAVE_CPUID
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10 namespace pfc {
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11
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12 bool query_cpu_feature_set(unsigned p_value) {
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13
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14 #ifdef __AVX__
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15 // AVX implies all supported values are set
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16 return true;
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17 #else
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18
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19 #if _M_IX86_FP >= 2 || defined(_M_X64)
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20 // don't bother checking for SSE/SSE2 if compiled to use them
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21 p_value &= ~(CPU_HAVE_SSE | CPU_HAVE_SSE2);
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22 if (p_value == 0) return true;
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23 #endif
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24
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25 #ifdef _MSC_VER
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26 __try {
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27 #endif
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28 if (p_value & (CPU_HAVE_SSE | CPU_HAVE_SSE2 | CPU_HAVE_SSE3 | CPU_HAVE_SSSE3 | CPU_HAVE_SSE41 | CPU_HAVE_SSE42 | CPU_HAVE_AVX)) {
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29 int buffer[4];
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30 __cpuid(buffer,1);
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31 if (p_value & CPU_HAVE_SSE) {
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32 if ((buffer[3]&(1<<25)) == 0) return false;
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33 }
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34 if (p_value & CPU_HAVE_SSE2) {
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35 if ((buffer[3]&(1<<26)) == 0) return false;
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36 }
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37 if (p_value & CPU_HAVE_SSE3) {
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38 if ((buffer[2]&(1<<0)) == 0) return false;
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39 }
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40 if (p_value & CPU_HAVE_SSSE3) {
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41 if ((buffer[2]&(1<<9)) == 0) return false;
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42 }
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43 if (p_value & CPU_HAVE_SSE41) {
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44 if ((buffer[2]&(1<<19)) == 0) return false;
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45 }
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46 if (p_value & CPU_HAVE_SSE42) {
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47 if ((buffer[2]&(1<<20)) == 0) return false;
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48 }
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49 if (p_value & CPU_HAVE_AVX) {
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50 if ((buffer[2] & (1 << 28)) == 0) return false;
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51 }
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52 }
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53 return true;
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54 #ifdef _MSC_VER
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55 } __except(1) {
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56 return false;
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57 }
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58 #endif
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59 #endif
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60 }
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61 }
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62
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63 #endif
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64
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65 namespace pfc {
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66 const char* cpuArch() {
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67 #ifdef PFC_CPU_ARCH
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68 return PFC_CPU_ARCH;
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69 #else
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70 return "Unknown";
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71 #endif
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72 }
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73 }
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