This is what I meant (written just before takeoff):
Code:
MCode(ByRef code, hex) { ; allocate memory and write Machine Code there
VarSetCapacity(code,StrLen(hex)//2)
Loop % StrLen(hex)//2
NumPut("0x" . SubStr(hex,2*A_Index-1,2), code, A_Index-1, "Char")
}
MCode(CPUID,"538b4424080fa2508b44241489188b44241889088b44241c89105b8b44240c89185bc3")
VarSetCapacity(a,4,0), VarSetCapacity(b,4,0), VarSetCapacity(c,4,0), VarSetCapacity(d,4,0)
dllcall(&CPUID,"UInt",0, "Str",a, "Str",b, "Str",c, "Str",d, "CDECL")
s = A = 0: %b%%d%%c%`n
SetFormat Integer, Hex
VarSetCapacity(a,4,0), VarSetCapacity(b,4,0), VarSetCapacity(c,4,0), VarSetCapacity(d,4,0)
dllcall(&CPUID,"UInt",1, "Uint*",a, "UInt*",b, "UInt*",c, "UInt*",d, "CDECL")
s = %s%A = 1: %a% %b% %c% %d%`n
VarSetCapacity(a,4,0), VarSetCapacity(b,4,0), VarSetCapacity(c,4,0), VarSetCapacity(d,4,0)
dllcall(&CPUID,"UInt",2, "Uint*",a, "UInt*",b, "UInt*",c, "UInt*",d, "CDECL")
s = %s%A = 2: %a% %b% %c% %d%`n
VarSetCapacity(a,4,0), VarSetCapacity(b,4,0), VarSetCapacity(c,4,0), VarSetCapacity(d,4,0)
dllcall(&CPUID,"UInt",3, "Uint*",a, "UInt*",b, "UInt*",c, "UInt*",d, "CDECL")
s = %s%A = 3: %a% %b% %c% %d%`n
MsgBox %s%
The CPUID machine code function was compiled by VS'05 and converted to hex stream. Its source code is (with the appropriate typedef for uint):
Code:
typedef unsigned long uint;
void CPUID(uint x, uint* a, uint* b, uint* c, uint* d) { // x=select, [a,b,c,d]=result
__asm {
mov eax, x
cpuid
push eax
mov eax, DWORD PTR [b]
mov DWORD PTR [eax], ebx
mov eax, DWORD PTR [c]
mov DWORD PTR [eax], ecx
mov eax, DWORD PTR [d]
mov DWORD PTR [eax], edx
pop ebx
mov eax, DWORD PTR [a]
mov DWORD PTR [eax], ebx
}
}
If the result is not string, use "UInt32*" in place of "Str" in the dllcall, which, in fact, does not call any dll, but the machine code function put in the CPUID AHK variable by the MCode function.
See the cited
http://grafi.ii.pw.edu.pl/gbm/x86/cpuid.html for other information returned by CPUID at different first parameters.
Edit 20071023: The above url seems to be dead. Use
http://en.wikipedia.org/wiki/CPUID instead.
Edit 20071030: The register EAX is also returned (before EBX, ECX and EDX)
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