1 // Copyright 2016 The SwiftShader Authors. All Rights Reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 15 #ifndef rr_CPUID_hpp 16 #define rr_CPUID_hpp 17 18 namespace rr 19 { 20 #if !defined(__i386__) && defined(_M_IX86) 21 #define __i386__ 1 22 #endif 23 24 #if !defined(__x86_64__) && (defined(_M_AMD64) || defined (_M_X64)) 25 #define __x86_64__ 1 26 #endif 27 28 class CPUID 29 { 30 public: 31 static bool supportsMMX(); 32 static bool supportsCMOV(); 33 static bool supportsMMX2(); // MMX instructions added by SSE: pshufw, pmulhuw, pmovmskb, pavgw/b, pextrw, pinsrw, pmaxsw/ub, etc. 34 static bool supportsSSE(); 35 static bool supportsSSE2(); 36 static bool supportsSSE3(); 37 static bool supportsSSSE3(); 38 static bool supportsSSE4_1(); 39 40 static void setEnableMMX(bool enable); 41 static void setEnableCMOV(bool enable); 42 static void setEnableSSE(bool enable); 43 static void setEnableSSE2(bool enable); 44 static void setEnableSSE3(bool enable); 45 static void setEnableSSSE3(bool enable); 46 static void setEnableSSE4_1(bool enable); 47 48 private: 49 static bool MMX; 50 static bool CMOV; 51 static bool SSE; 52 static bool SSE2; 53 static bool SSE3; 54 static bool SSSE3; 55 static bool SSE4_1; 56 57 static bool enableMMX; 58 static bool enableCMOV; 59 static bool enableSSE; 60 static bool enableSSE2; 61 static bool enableSSE3; 62 static bool enableSSSE3; 63 static bool enableSSE4_1; 64 65 static bool detectMMX(); 66 static bool detectCMOV(); 67 static bool detectSSE(); 68 static bool detectSSE2(); 69 static bool detectSSE3(); 70 static bool detectSSSE3(); 71 static bool detectSSE4_1(); 72 }; 73 } 74 75 namespace rr 76 { 77 inline bool CPUID::supportsMMX() 78 { 79 return MMX && enableMMX; 80 } 81 82 inline bool CPUID::supportsCMOV() 83 { 84 return CMOV && enableCMOV; 85 } 86 87 inline bool CPUID::supportsMMX2() 88 { 89 return supportsSSE(); // Coincides with 64-bit integer vector instructions supported by SSE 90 } 91 92 inline bool CPUID::supportsSSE() 93 { 94 return SSE && enableSSE; 95 } 96 97 inline bool CPUID::supportsSSE2() 98 { 99 return SSE2 && enableSSE2; 100 } 101 102 inline bool CPUID::supportsSSE3() 103 { 104 return SSE3 && enableSSE3; 105 } 106 107 inline bool CPUID::supportsSSSE3() 108 { 109 return SSSE3 && enableSSSE3; 110 } 111 112 inline bool CPUID::supportsSSE4_1() 113 { 114 return SSE4_1 && enableSSE4_1; 115 } 116 } 117 118 #endif // rr_CPUID_hpp 119
