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85 lines
2.1 KiB
85 lines
2.1 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// |
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// Purpose: linux dependant ASM code for CPU capability detection |
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// |
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// $Workfile: $ |
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// $NoKeywords: $ |
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//=============================================================================// |
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#include "platform.h" |
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#if defined __SANITIZE_ADDRESS__ |
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bool CheckMMXTechnology(void) { return false; } |
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bool CheckSSETechnology(void) { return false; } |
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bool CheckSSE2Technology(void) { return false; } |
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bool Check3DNowTechnology(void) { return false; } |
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#elif defined (__arm__) || defined (__aarch64__) |
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bool CheckMMXTechnology(void) { return false; } |
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bool CheckSSETechnology(void) { return false; } |
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bool CheckSSE2Technology(void) { return false; } |
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bool Check3DNowTechnology(void) { return false; } |
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#else |
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static void cpuid(uint32 function, uint32& out_eax, uint32& out_ebx, uint32& out_ecx, uint32& out_edx) |
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{ |
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#if defined(PLATFORM_64BITS) |
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asm("mov %%rbx, %%rsi\n\t" |
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"cpuid\n\t" |
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"xchg %%rsi, %%rbx" |
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: "=a" (out_eax), |
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"=S" (out_ebx), |
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"=c" (out_ecx), |
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"=d" (out_edx) |
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: "a" (function) |
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); |
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#else |
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asm("mov %%ebx, %%esi\n\t" |
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"cpuid\n\t" |
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"xchg %%esi, %%ebx" |
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: "=a" (out_eax), |
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"=S" (out_ebx), |
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"=c" (out_ecx), |
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"=d" (out_edx) |
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: "a" (function) |
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); |
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#endif |
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} |
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bool CheckMMXTechnology(void) |
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{ |
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uint32 eax,ebx,edx,unused; |
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cpuid(1,eax,ebx,unused,edx); |
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return edx & 0x800000; |
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} |
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bool CheckSSETechnology(void) |
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{ |
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uint32 eax,ebx,edx,unused; |
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cpuid(1,eax,ebx,unused,edx); |
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return edx & 0x2000000L; |
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} |
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bool CheckSSE2Technology(void) |
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{ |
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uint32 eax,ebx,edx,unused; |
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cpuid(1,eax,ebx,unused,edx); |
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return edx & 0x04000000; |
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} |
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bool Check3DNowTechnology(void) |
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{ |
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uint32 eax, unused; |
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cpuid(0x80000000,eax,unused,unused,unused); |
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if ( eax > 0x80000000L ) |
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{ |
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cpuid(0x80000001,unused,unused,unused,eax); |
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return ( eax & 1<<31 ); |
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} |
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return false; |
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} |
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#endif
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