Difference between revisions of "Assembler:Commands:CMOVNAE"
(Created page with 'Category:Assembler '''command''' cmovnae ''destination, source'' cmovnae is CMOVcc instruction, The cmovnae (conditional move if not above or equal) check the state of '''CF…') |
m |
||
| Line 2: | Line 2: | ||
'''command''' cmovnae ''destination, source'' | '''command''' cmovnae ''destination, source'' | ||
| − | cmovnae is CMOVcc instruction, The cmovnae | + | cmovnae is CMOVcc instruction, The cmovnae ''conditional move if not above or equal'' check the state of '''CF'''. |
| + | |||
| + | If '''CF=1''' then condition is satisfied, otherwise it will be skipped. | ||
| + | |||
| + | CMOVcc instructions are mainly used after [[Assembler:Commands:CMP|CMP]] | ||
| + | |||
| + | |||
| + | <div style="padding:2px;border:1px dashed #2f6fab;background-color:#f4f4f4;"> | ||
| + | The CMOVcc instructions check the state of one or more of the status flags in the EFLAGS register (CF, OF, PF, SF, and ZF) and perform a move operation if the flags are in a specified state (or condition). A condition code (cc) is associated with each instruction to indicate the condition being tested for. If the condition is not satisfied, a move is not performed and execution continues with the instruction following the CMOVcc instruction. | ||
| + | |||
| + | These instructions can move a 16- or 32-bit value from memory to a general-purpose register or from one general-purpose register to another. Conditional moves of 8-bit register operands are not supported. | ||
| + | |||
| + | The terms "less" and "greater" are used for comparisons of signed integers and the terms "above" and "below" are used for unsigned integers. | ||
| + | </div> | ||
Latest revision as of 09:09, 8 January 2018
command cmovnae destination, source
cmovnae is CMOVcc instruction, The cmovnae conditional move if not above or equal check the state of CF.
If CF=1 then condition is satisfied, otherwise it will be skipped.
CMOVcc instructions are mainly used after CMP
The CMOVcc instructions check the state of one or more of the status flags in the EFLAGS register (CF, OF, PF, SF, and ZF) and perform a move operation if the flags are in a specified state (or condition). A condition code (cc) is associated with each instruction to indicate the condition being tested for. If the condition is not satisfied, a move is not performed and execution continues with the instruction following the CMOVcc instruction.
These instructions can move a 16- or 32-bit value from memory to a general-purpose register or from one general-purpose register to another. Conditional moves of 8-bit register operands are not supported.
The terms "less" and "greater" are used for comparisons of signed integers and the terms "above" and "below" are used for unsigned integers.
Command Parameters[edit]
| Parameter | Description |
|---|---|
| destination | r16 / r32 |
| source | m16-r16 / m32-r32 |
Examples[edit]
cmovnae dx,ax
cmovnae cx,[bx]
cmovnae edx,[edx+110]
cmovnae eax,edx
cmovnae esi,[00123abc]
cmovnae edi,[UserDefinedSymbol]
