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Assume mmx is supported on x64, require a test for x86 and disabled on other archs

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This commit is contained in:
Anonymous Maarten 2024-06-26 00:38:05 +02:00
parent f085b762d2
commit 6ece169019
1 changed files with 6 additions and 0 deletions
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6
LEGO1/mxdirectx/mxdirect3d.cpp
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@ -1014,6 +1014,7 @@ int MxDeviceEnumerate::SupportsMMX()
} }
int supports_mmx; int supports_mmx;
#ifdef _MSC_VER #ifdef _MSC_VER
#if defined(_M_IX86)
__asm { __asm {
mov eax, 0x0 ; EAX=0: Highest Function Parameter and Manufacturer ID mov eax, 0x0 ; EAX=0: Highest Function Parameter and Manufacturer ID
#if _MSC_VER > 1100 #if _MSC_VER > 1100
@ -1034,6 +1035,11 @@ int MxDeviceEnumerate::SupportsMMX()
adc eax, eax ; Add with carry: EAX = EAX + EAX + CF = CF adc eax, eax ; Add with carry: EAX = EAX + EAX + CF = CF
mov supports_mmx, eax ; Save eax into C variable mov supports_mmx, eax ; Save eax into C variable
} }
#elif defined(_M_IX64)
supports_mmx = 1;
#else
supports_mmx = 0;
#endif
#else #else
__asm__("movl $0x0, %%eax\n\t" // EAX=0: Highest Function Parameter and Manufacturer ID __asm__("movl $0x0, %%eax\n\t" // EAX=0: Highest Function Parameter and Manufacturer ID
"cpuid\n\t" // Run CPUID\n" "cpuid\n\t" // Run CPUID\n"