為了以后優(yōu)化算法，還是硬著頭皮學了一下匯編，也就是C\C++與匯編的混合編程，帖一個類的代碼，非常簡單的東西，覺得還可以優(yōu)化。識別CPU的型號，使用了Intel的CPUID指令，還沒有來得及看AMD的資料，以后有空了我也做一個類似于CPUID一樣的小工具呵呵。
class?CIntelCpuInfo{
private:
????DWORD?m_VersionInfo;
????DWORD?m_Features;
????
????void?GetFeatures();
????void?GetVersionInfo();
public:
????CIntelCpuInfo()?{};
????~CIntelCpuInfo()?{};
????void?Show();
};
void?CIntelCpuInfo::Show()
{
????this->GetVersionInfo();
????this->GetFeatures();
};
void?CIntelCpuInfo::GetVersionInfo()
{
????DWORD?VER;
????DWORD?BACKUP;
????DWORD?STEP,MODEL,FAMILY;
????__asm{
????????MOV?EAX,01H;
????????CPUID;
????????MOV?VER,EAX;
????????MOV?BACKUP,EAX;
????????AND?EAX,0000000FH;
????????MOV?STEP,EAX;
????????MOV?EAX,BACKUP;
????????SHR?EAX,4;
????????AND?EAX,0000000FH;
????????MOV?MODEL,EAX;
????????MOV?EAX,BACKUP;
????????SHR?EAX,8;
????????AND?EAX,0000000FH;
????????MOV?FAMILY,EAX;
????};
????cout<<"Family?ID?:?"<<FAMILY<<"?Stepping?ID?:?"<<STEP<<"?Model?:?"<<MODEL<<endl;
};
void?CIntelCpuInfo::GetFeatures()
{
????DWORD?C,D;
????DWORD?SSE3Tag;
????DWORD?SSTEPTag;
????DWORD?SSE2Tag;
????DWORD?SSE1Tag;
????DWORD?MMXTag;
????__asm{
????????MOV?EAX,01H;
????????CPUID;
????????MOV?C,ECX;
????????PUSH?ECX;
????????AND?ECX,01H;
????????MOV?SSE3Tag,ECX;
????????POP?ECX;
??????? AND?ECX,0080H;
????????MOV?SSTEPTag,ECX;
????????SHR?SSTEPTag,7;
????????MOV?D,EDX;
????????SHR?EDX,23;
????????PUSH?EDX;
????????PUSH?EDX;
????????AND?EDX,01H;
????????MOV?MMXTag,EDX;
????????POP?EDX;
????????SHR?EDX,2;
????????AND?EDX,01H;
????????MOV?SSE1Tag,EDX;
????????POP?EDX;
????????SHR?EDX,3;
????????AND?EDX,01H;
????????MOV?SSE2Tag,EDX;
????};
????cout<<"SSE3?Support???"<<SSE3Tag<<endl;
????cout<<"SSE2?Support???"<<SSE2Tag<<endl;
????cout<<"SSE1?Support???"<<SSE1Tag<<endl;
????cout<<"Enhanced?SpeedStepping???"<<SSTEPTag<<endl;
};
我的CPU是2002年下半年的，Intel Pentium 4 Northwood 1.8GA，嗬嗬，搞得多么先進一樣。截圖如下，
結(jié)果完全正確。有了一些經(jīng)驗，在以后的程序中，可以通過識別CPU類型進行額外的優(yōu)化，以后好好的研究Intel的Manual。
posted on 2006-08-18 22:15
周波 閱讀(998)
評論(1) 編輯 收藏 引用 所屬分類:
無庸技術