Получение информации о процессоре

unit ExpandCPUInfo;

interface

type

TCPUInfo = packed record
IDString : array [0..11] of Char;
Stepping : Integer;
Model    : Integer;
Family   : Integer;
FPU,
VirtualModeExtensions,
DebuggingExtensions,
PageSizeExtensions,
TimeStampCounter,
K86ModelSpecificRegisters,
MachineCheckException,
CMPXCHG8B,
APIC,
MemoryTypeRangeRegisters,
GlobalPagingExtension,
ConditionalMoveInstruction,
MMX     : Boolean;
SYSCALLandSYSRET,
FPConditionalMoveInstruction,
AMD3DNow : Boolean;
CPUName : String;
end;
{информация об идентификации процессора}
function ExistCPUID:Boolean;
function CPUIDInfo(out info: TCPUInfo):Boolean;
{инф-я о технологии процессора}
function ExistMMX:Boolean;
function Exist3DNow:Boolean;
function ExistKNI:Boolean;
{------------------------}
procedure EMMS;
procedure FEMMS;
procedure PREFETCH(p: Pointer); register;

implementation

function ExistCPUID : Boolean;
asm

pushfd
pop eax
mov ebx, eax
xor eax, 00200000h
push eax
popfd
pushfd
pop ecx
mov eax,0
cmp ecx, ebx
jz @NO_CPUID
inc eax
@NO_CPUID:
end;

function CPUIDInfo(out info: TCPUIDInfo):Boolean;

function ExistExtendedCPUIDFunctions:Boolean;
asm
mov eax,080000000h
db $0F,$A2
end;
var

name : array [0..47] of Char;
p : Pointer;
begin

if ExistCPUID then asm
jmp @Start
@BitLoop:
mov al,dl
and al,1
mov [edi],al
shr edx,1
inc edi
loop @BitLoop
ret
@Start:
mov edi,info
mov eax,0
db $0F,$A2
mov [edi],ebx
mov [edi+4],edx
mov [edi+8],ecx
mov eax,1
db $0F,$A2
mov ebx,eax
and eax,0fh;
mov [edi+12],eax;
shr ebx,4
mov eax,ebx
and eax,0fh
mov [edi+12+4],eax
shr ebx,4
mov eax,ebx
and eax,0fh
mov [edi+12+8],eax
add edi,24
mov ecx,6
call @BitLoop
shr edx,1
mov ecx,3
call @BitLoop
shr edx,2
mov ecx,2
call @BitLoop
shr edx,1
mov ecx,1
call @BitLoop
shr edx,7
mov ecx,1
call @BitLoop
mov p,edi
end;
if (info.IDString = 'AuthenticAMD') and ExistExtendedCPUIDFunctions then begin
asm
mov edi,p
mov eax,080000001h
db $0F,$A2
mov eax,edx
shr eax,11
and al,1
mov [edi],al
mov eax,edx
shr eax,16
and al,1
mov [edi+1],al
mov eax,edx
shr eax,31
and al,1
mov [edi+2],al
lea edi,name
mov eax,0
mov [edi],eax
mov eax,080000000h
db $0F,$A2
cmp eax,080000004h
jl @NoString
mov eax,080000002h
db $0F,$A2
mov [edi],eax
mov [edi+4],ebx
mov [edi+8],ecx
mov [edi+12],edx
add edi,16
mov eax,080000003h
db $0F,$A2
mov [edi],eax
mov [edi+4],ebx
mov [edi+8],ecx
mov [edi+12],edx
add edi,16
mov eax,080000004h
db $0F,$A2
mov [edi],eax
mov [edi+4],ebx
mov [edi+8],ecx
mov [edi+12],edx
@NoString:
end;
info.CPUName:=name;
end else with info do begin
SYSCALLandSYSRET:=False;
FPConditionalMoveInstruction:=False;
AMD3DNow:=False;
CPUName:='';
end;
Result:=ExistCPUID;
end;

function ExistMMX:Boolean;
var

info : TCPUIDInfo;
begin

if CPUIDInfo(info) then
Result:=info.MMX
else
Result:=False;
end;

function Exist3DNow:Boolean;
var

info : TCPUIDInfo;
begin

if CPUIDInfo(info) then
Result:=info.AMD3DNow
else
Result:=False;
end;

function ExistKNI:Boolean;
begin

Result:=False;
end;

procedure EMMS;
asm

db $0F,$77
end;

procedure FEMMS;
asm

db $0F,$03
end;

procedure PREFETCH(p: Pointer); register;
asm

// PREFETCH byte ptr [eax]
end;

end.