А.4 Коды регистров

Когда в качестве операнда используется закодированный в команде регистр, он определяется по имени, например AX, CL или ESI. Имя регистра определяет его размер - 32, 16 или 8 бит. В случае, если размер регистра определяется атрибутом размера операнда, используется запись такого формата eXX. Например, запись eAX означает, что при атрибуте размера операнда равном 16, используется регистр AX, а при атрибуте размера операнда равном 32 - регистр EAX.

Таблица однобайтовых команд 0 1 2 3 4 5 6 7 +---------------------------------------------------------------+ | ADD | PUSH | POP |0+-----------------------------------------------| ES | ES | | Eb.Gb | Ev.Gv | Gb.Eb | Gv.Ev | AL.lb | eAX.lv| | | +-----------------------------------------------+-------+-------| | ADC | PUSH | POP |1+-----------------------------------------------| SS | SS | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,lb | eAX,lv| | | +-----------------------------------------------+-------+-------| | AND | SEG | |2+-----------------------------------------------| =ES | DAA | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,lb | eAX,lv| | | +-----------------------------------------------+-------+-------| | XOR | SEG | |3+-----------------------------------------------| =SS | AAA | | Eb,Gb | Ev,Gv | Gb,Eb | Gb,Ev | AL,lb | eAX,lv| | | +---------------------------------------------------------------| | INC регистр общего назначения |4+---------------------------------------------------------------| | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +---------------------------------------------------------------| | PUSH регистр общего назначения |5+---------------------------------------------------------------| | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +-------+-------+-------+-------+-------+-------+-------+-------| | PUSHA | POPA | BOUND | ARPL | SEG | SEG |Размер |Рармер |6| | eCX | Gv,Ma | Ew,Rw | =FS | =GS | опер. |адреса | +---------------------------------------------------------------| | Близкий переход по условию (JB) |7+---------------------------------------------------------------| | JO | JNO | JB | JNB | JZ | JNZ | JBE | JNBE | +---------------+-------+-------+---------------+---------------| | Непосред. Grpl| MOVB | Grpl | TEST | XCHG |8+---------------+-------| Ev,lb +---------------+---------------| | Eb,lb | Ev,lv |AL,imm8| | Eb,Gb | Ev,Gv | Eb,Gb | Ev,Gv | +-------+-------------------------------------------------------| | | XCHG с регистром слова или двойного слова eAX |9| NOP +-------------------------------------------------------| | | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +-------------------------------+-------+-------+-------+-------| | MOV | MOVSB |MOVSW/D| CMPSB |CMPSW/D|A+-------------------------------| Xb,Yb | Xv,Yv | Xb,Yb | Xv,Yv | | AL,Ob |eAX,Ov | Ob,AL |Ov,eAX | | | | | +---------------------------------------------------------------| | MOV с непосредственным байтом в байтовом регистре |B+---------------------------------------------------------------| | AL | CL | DL | BL | AH | CH | DH | BH | +---------------+---------------+-------+-------+---------------| | Сдвиг Grp2 | ближний RET | LES | LDS | MOV |C+---------------+---------------| Gv,Mp | Gv,Mp +---------------| | Eb,lb | Ev,lb | lw | | | | Eb,lb | Ev,lv | +-------------------------------+-------+-------+-------+-------| | Сдвиг Grp2 | | | | |D+-------------------------------| AAM | AAD | | XLAT | | Eb,1 | Ev,1 | Eb,CL | Ev,CL | | | | | +-------+-------+-------+-------+---------------+---------------| |LOOPNE | LOOPE | LOOP | JCXZ | IN | OUT |E| Jb | Jb | Jb | Jb +---------------+---------------| | | | | | Al,lb |eAX,lb | lb,AL |lb,eAX | +-------+-------+-------+-------+-------+-------+---------------| | | | | REP | | | Унарный Grp3 |F| LOCK | | REPNE | REPE | HLT | CMC +---------------| | | | | | | | Eb | Ev | +---------------------------------------------------------------+ Таблица однобайтовых команд 8 9 A B C D E F +---------------------------------------------------------------+ | OR | PUSH |2-байт-|0+-----------------------------------------------| CS | ный | | Eb.Gb | Ev.Gv | Gb.Eb | Gv.Ev | AL.lb | eAX.lv| | выход | +-----------------------------------------------+-------+-------| | SBB | PUSH | POP |1+-----------------------------------------------| DS | SS | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,lb | eAX,lv| | | +-----------------------------------------------+-------+-------| | SUB | SEG | |2+-----------------------------------------------| CS | DAS | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,lb | eAX,lv| | | +-----------------------------------------------+-------+-------| | CMP | SEG | |3+-----------------------------------------------| DS | AAS | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | AL,lb | eAX,lv| | | +---------------------------------------------------------------| | DEC регистр общего назначения |4+---------------------------------------------------------------| | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +---------------------------------------------------------------| | POP в регистр общего назначения |5+---------------------------------------------------------------| | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +-------+-------+-------+-------+-------+-------+-------+-------| | PUSH | IMUL | PUSH | IMUL | INSB |INSW/D | OUTSB |OUTSW/D|6| lv |GvEvlv | lb |GvEvlb | Yb,DX | Yv,DX | DX,Xb | DX,Xv | +---------------------------------------------------------------| | Близкий переход по условию (JB) |7+---------------------------------------------------------------| | JS | JNS | JP | JNP | JL | JNL | JLE | JNLE | +-------------------------------+-------+-------+-------+-------| | MOV | MOV | LEA | MOV | POP |8+-------------------------------| | | | | | Eb,Gb | Ev,Gv | Gb,Eb | Gv,Ev | Ew,Sw | Gv,M | Sw,Ew | Ev | +-------+-------+-------+-------+-------+-------+-------+-------| | CBW | CWD | CALL | WAIT | PUSHHF| POPF | SAHF | LAHF |9| | | Ap | | Fv | Fv | | | +---------------+-------+-------+-------+-------+-------+-------| | TEST | STOSB |STOSW/D| LODSB |LODSW/D| SCASB |SCASW/D|A+---------------| Yb,AL | Yv,eAX| AL,Xb | eAX,Xv| AL,Xb | eAX,Xv| | AL,lb | eAX,lv| | | | | | | +---------------------------------------------------------------| | MOV непосредственное слово или двойное слово в | | регистр слова или двойного слова |B+---------------------------------------------------------------| | eAX | eCX | eDX | eBX | eSP | eBP | eSI | eDI | +-------+-------+---------------+-------+-------+-------+-------| | ENTER | | Дальний RET | INT | INT | | |C| lw,lb | LEAVE +---------------| 3 | lb | INTO | IRET | | | | lw | | | | | | +---------------------------------------------------------------|D| ESC ( Выход на множество команд сопроцессора ) | +---------------------------------------------------------------| | CALL | JMP | IN | OUT |E| Jv +-----------------------+---------------+---------------| | | JV | AP | Jb | AL,DX |eAX,DX | DX,AL | Dx,eAX| +-------+-------+-------+-------+-------+-------+-------+-------| | CLC | STC | CLI | STI | CLD | STD |INC/DEC|INC/DEC|F| | | | | | | Grp4 | Grp5 | +---------------------------------------------------------------+ Таблица двубайтовых команд ( первый байт 0FH ) 0 1 2 3 4 5 6 7 +---------------------------------------------------------------+0| Grp6 | Grp7 | LAR | LSL | | | CLTS | | | | | Gv,Ew | Gv,Ew | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|1| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|2| MOV | MOV | MOV | MOV | MOV | | MOV | | | Cd,Rd | Dd,Rd | Rd,Cd | Rd,Dd | Td,Rd | | Rd,Td | | +-------+-------+-------+-------+-------+-------+-------+-------|3| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|4| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|5| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|6| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|7| | | | | | | | | | | | | | | | | | +---------------------------------------------------------------| | Дальний переход по условию (Jv) |8+---------------------------------------------------------------| | JO | JNO | JB | JNB | JZ | JNZ | JBE | JNBE | +---------------------------------------------------------------| | Установка байта по условию (Eb) |9+---------------------------------------------------------------| | SETO | SETNO | SETB | SETNB | SETZ | SETNZ | SETBE | SETNBE| +-------+-------+-------+-------+-------+-------+-------+-------|A| PUSH | POP | | BT | SHLD | SHLD |CMPXCHG|CMPXCHG| | FS | FS | | Ev,Gv |EvGvlb |EvGvCL | Eb,Gb | Ev,Gv | +-------+-------+-------+-------+-------+-------+---------------| | | | LSS | BTR | LFS | LGS | MOVZX |B| | | Mp | Ev,Gv | Mp | Mp +---------------| | | | | | | | Gv,Eb | Gv,Ew | +-------+-------+-------+-------+-------+-------+-------+-------|C| XADD | XADD | | | | | | | | Eb,Gb | Ev,Gv | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|D| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|E| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|F| | | | | | | | | | | | | | | | | | +---------------------------------------------------------------+ Таблица двубайтовых команд ( первый байт 0FH ) 8 9 A B C D E F +---------------------------------------------------------------+0| INVD |WBINVD | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|1| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|2| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|3| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|4| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|5| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|6| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|7| | | | | | | | | | | | | | | | | | +---------------------------------------------------------------| | Дальний переход по условию (Jv) |8+---------------------------------------------------------------| | JS | JNS | JP | JNP | JL | JNL | JLE | JNLE | +-------+-------+-------+-------+-------+-------+-------+-------|9| SETS | SETNS | SETP | SETNP | SETL | SETNL | SETLE | SETNLE| +-------+-------+-------+-------+-------+-------+-------+-------|A| PUSH | POP | | BTS | SHRD | SHRD | | IMUL | | GS | GS | | Ev,Gv |EvGvlb |EvGvCL | | Gv,Ev | +-------+-------+-------+-------+-------+-------+---------------| | | | Grp-8 | BTC | BSF | BSR | MOVSX |B| | | Ev,lb | Ev,Gv | Gv,Ev | Gv,Ev +---------------| | | | | | | | Gv,Eb | Gv,Ew | +-------+-------+-------+-------+-------+-------+-------+-------|C|BSADD | XADD | | | | | | | | Eb,Gb | Ev,Gv | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|D| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|E| | | | | | | | | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|F| | | | | | | | | | | | | | | | | | +---------------------------------------------------------------+ Коды операций, определенные битами 5,4 и 3 байта modR/M +-----------------------------+ | mod | nnn | R/M | +-----------------------------+ 000 001 010 011 100 101 110 111 +---------------------------------------------------------------+1| ADD | OR | ADC | SBB | AND | SUB | XOR | CMP | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|2| ROL | ROR | RCL | RCR | SHL | SHR | SHL | SAR | | | | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|3| TEST | TEST | NOT | NEG | MUL | IMUL | DIV | IDIV | | lb/lv | lb/lv | |AL/eAX |AL/eAX |AL/eAX |AL/eAX |AL/eAX | +-------+-------+-------+-------+-------+-------+-------+-------|4| INC | DEC | | | | | | | | Eb | Eb | | | | | | | +-------+-------+-------+-------+-------+-------+-------+-------|5| INC | IDEC | CALL | CALL | JMP | JMP | PUSH | | | Ev | Ev | Ev | eP | Ev | Ep | Ev | | +---------------------------------------------------------------+ Коды операций, определенные битами 5,4 и 3 байта modR/M +-----------------------------+ | mod | nnn | R/M | +-----------------------------+ 000 001 010 011 100 101 110 111 +---------------------------------------------------------------+6| SLDT | STR | LLDT | LTR | VERR | VERW | | | | Ew | Ew | Ew | Ew | Ew | Ew | | | +-------+-------+-------+-------+-------+-------+-------+-------|7| SGDT | SIDT | LGDT | LIDT | SMSW | | LMSW | | | Ms | Ms | Ms | Ms | Ew | | Ew | | +-------+-------+-------+-------+-------+-------+-------+-------|8| | | | | BT | BTS | BTR | BTC | | | | | | | | | | +---------------------------------------------------------------+

Приложение B. Таблица воздействия команд на флаги