21 lines
1.4 KiB
Markdown
21 lines
1.4 KiB
Markdown
|
|Opcode|Instruction|Op/En|64-Bit Mode|Compat/Leg Mode|Description|
|
||
|
|
|---|---|---|---|---|---|
|
||
|
|
|90+rw|XCHG AX, r16|O|Valid|Valid|Exchange r16 with AX.|
|
||
|
|
|90+rw|XCHG r16, AX|O|Valid|Valid|Exchange AX with r16.|
|
||
|
|
|90+rd|XCHG EAX, r32|O|Valid|Valid|Exchange r32 with EAX.|
|
||
|
|
|REX.W + 90+rd|XCHG RAX, r64|O|Valid|N.E.|Exchange r64 with RAX.|
|
||
|
|
|90+rd|XCHG r32, EAX|O|Valid|Valid|Exchange EAX with r32.|
|
||
|
|
|REX.W + 90+rd|XCHG r64, RAX|O|Valid|N.E.|Exchange RAX with r64.|
|
||
|
|
|86 /r|XCHG r/m8, r8|MR|Valid|Valid|Exchange r8 (byte register) with byte from r/m8.|
|
||
|
|
|REX + 86 /r|XCHG r/m8\*, r8\*|MR|Valid|N.E.|Exchange r8 (byte register) with byte from r/m8.|
|
||
|
|
|86 /r|XCHG r8, r/m8|RM|Valid|Valid|Exchange byte from r/m8 with r8 (byte register).|
|
||
|
|
|REX + 86 /r|XCHG r8\*, r/m8\*|RM|Valid|N.E.|Exchange byte from r/m8 with r8 (byte register).|
|
||
|
|
|87 /r|XCHG r/m16, r16|MR|Valid|Valid|Exchange r16 with word from r/m16.|
|
||
|
|
|87 /r|XCHG r16, r/m16|RM|Valid|Valid|Exchange word from r/m16 with r16.|
|
||
|
|
|87 /r|XCHG r/m32, r32|MR|Valid|Valid|Exchange r32 with doubleword from r/m32.|
|
||
|
|
|REX.W + 87 /r|XCHG r/m64, r64|MR|Valid|N.E.|Exchange r64 with quadword from r/m64.|
|
||
|
|
|87 /r|XCHG r32, r/m32|RM|Valid|Valid|Exchange doubleword from r/m32 with r32.|
|
||
|
|
|REX.W + 87 /r|XCHG r64, r/m64|RM|Valid|N.E.|Exchange quadword from r/m64 with r64.|
|
||
|
|
```
|
||
|
|
* In 64-bit mode, r/m8 cannot been coded to access the following byte registers if a REX prefix is used: AH, BH, CH, DH.
|
||
|
|
```
|