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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | |
| 2 | |||
| 3 | |||
| 4 | #define EDX_CX8 (1 << 8) /* CMPXCHG8B */ |
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| 5 | #define EDX_CMOV (1 << 15) |
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| 6 | #define EDX_MMX (1 << 23) |
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| 7 | #define EDX_FXSR (1 << 24) /* FXSAVE and FXRSTOR */ |
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| 8 | #define EDX_SSE (1 << 25) |
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| 9 | #define EDX_SSE2 (1 << 26) |
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| 10 | |||
| 11 | |||
| 12 | #define ECX_SSE3 (1 << 0) |
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| 13 | #define ECX_CX16 (1 << 13) /* CMPXCHG16B */ |
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| 14 | |||
| 15 | |||
| 16 | #define EDX_3DNOW (1 << 31) |
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| 17 | #define EDX_3DNOWP (1 << 30) |
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| 18 | #define EDX_LM (1 << 29) /*LONG MODE */ |
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| 19 | |||
| 20 | |||
| 21 | __asm__ __volatile__ ("cpuid;" \ |
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| 22 | : "=a" (a), "=b" (b), "=c" (c), "=d" (d)\ |
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| 23 | : "0" (level)) |
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| 24 | |||
| 25 | |||
| 26 | |||
| 27 | |||
| 28 | |||
| 29 | |||
| 30 | { |
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| 31 | unsigned int eax, ebx, ecx, edx; |
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| 32 | |||
| 33 | |||
| 34 | if (eax == 0) |
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| 35 | return; |
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| 36 | |||
| 37 | |||
| 38 | |||
| 39 | |||
| 40 | __cpu_features |= _CRT_CMPXCHG8B; |
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| 41 | if (edx & EDX_CMOV) |
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| 42 | __cpu_features |= _CRT_CMOV; |
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| 43 | |||
| 44 | |||
| 45 | __cpu_features |= _CRT_MMX; |
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| 46 | if (edx & EDX_FXSR) |
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| 47 | __cpu_features |= _CRT_FXSR; |
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| 48 | if (edx & EDX_SSE) |
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| 49 | __cpu_features |= _CRT_SSE; |
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| 50 | if (edx & EDX_SSE2) |
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| 51 | __cpu_features |= _CRT_SSE2; |
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| 52 | |||
| 53 | |||
| 54 | |||
| 55 | __cpu_features |= _CRT_SSE3; |
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| 56 | if (ecx & ECX_CX16) |
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| 57 | __cpu_features |= _CRT_CMPXCHG16B; |
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| 58 | |||
| 59 | |||
| 60 | if (eax < 0x80000001) |
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| 61 | return; |
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| 62 | __cpuid (0x80000001, eax, ebx, ecx, edx); |
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| 63 | if (edx & EDX_3DNOW) |
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| 64 | __cpu_features |= _CRT_3DNOW; |
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| 65 | if (edx & EDX_3DNOWP) |
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| 66 | __cpu_features |= _CRT_3DNOWP; |
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| 67 | |||
| 68 | |||
| 69 | } |
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| 70 |