汇编语言简单讲解.doc

x86(1)- 20x86ia32x8642-3x86CC+C+STLMFCC+C+1995* * * * * 1000C/C+-LISPJITJavaJava ReleaseProfilex86(2)- (CPU)* * * * Intel803864EAX32-bit16-bitAXAX8bitAHALEAXAXAHAL32-bitEAX4EAXEEAXAXXIntel AHALHL 8808616AXBX80386IntelIA-32321680386AXBX32Intel80386MMXEAX32-bitDS EBX32-bitEAXECXEDXDSECX32-bitDS EDX32-bitEAXDS EAX16-bit8-bitESI32-bitESIDSEDI32-bitEDIDSEBP32-bitSS8-bitSIDIBP16816-bit32-bitCSIP()DS16 bitESI ()(AXAXDS().ES16 bitEDIDSFSFF(FFree?)DSGSGG(GFIntel)FSSS16bitESP(pushpop)* ()EIP32 CS(CS)ESP32(SS)IP: Instruction Pointer, SP: Stack Pointer, (32)CR0, CR2, CR3()CR0D0, D1, D2, D3, D6D7()TR3, TR4, TR5, TR6 TR? ()David JurgensHelpPC 2.10x86(3)-2.2 x86* 12341234dD* 0h0H07fffh, 0ffffh* bBmask code41010110b* UnixqQoO777QMASMTASMNASMFFFF655351016EAXEBXECXEDX0?XHLEAX00000000EBX00000000ECX00000000EDX00000000EAX16bitAX16bitAHALAX8bitmov eax, 012345678hmov ebx, 0abcdeffehmov ecx, 1mov edx, 2; 012345678heax; 0abcdeffehebx; 000000001hecx; 000000002hedx?XHLEAX12345678EBXabcdeffeECX00000001EDX00000002movmovmovemov eax, ebxmov ecx, edx; ebxeax; edxecx?XHLEAXabcdeffeEBXabcdeffeECX00000002EDX00000002movemov0mov eax, 0a1234hmov bx, axmov ah, blmov al, bh; 0a1234heax; axbx; blah; bhalEAX Intel* reg32 32-bitEAXEBX* reg16 16-bit32AXBX* reg8? 8-bitALBH* imm32 32-bit* imm16 16-bit* imm8? 8-bitmov reg32, (reg32 | imm8 | imm16 | imm32)mov reg32, (reg16 | imm8 | imm16)mov reg8, (reg8 | imm8)mov eax, 010heax00000010h0xchg reg32, reg32xchg reg16, reg16xchg reg8, reg8xchg ebx,ecxebxecxIntelCPUCPUmov eax, 0a1234hmov bx, axxchg ah, al; 0a1234heax; axbx; ah, alinc reg(8,16,32)dec reg(8,16,32)looprepadd reg32, reg32 / imm(8,16,32)add reg16, reg16 / imm(8,16)add reg8, reg8 / imm(8)add eax, edxeax+edxeaxaddsubPASCALnA := nB +nCnAnB+nCandorxoraddmovsubandopcodeoperationcodeIntelTech!HelpHelpPC 2.10sub eax, eaxxor eax, eaxmov eax,0a=a-aaxor eax, eaxsub eax, eaxmov eax, 0CPUxor eax, eaxmov eax, 0a=a-aa=0a=a-a(ebpxa32-bit4)mov eax, dword ptr ebp-xsub eax, dword ptr ebp-xmov dword ptr ebp-x,eaxa=0mov dword ptr ebp-x