3.2.10 Flag Control (EFLAG)
Instructions
The status flag control instructions operate on the
bits in the %eflags register.
Table 3-11 Flag Control Instructions
| | | |
|---|
|
| CLC
| clear carry flag
|
|
|
| CLD
| clear direction flag
|
|
|
| CLI
| clear interrupt flag
|
|
|
| CMC
| complement carry flag
|
|
|
| LAHF
| load flags into %ah register
|
|
|
| POPF
| pop %eflags from stack
|
|
|
| POPFL
| pop %eflags from stack
| popfq valid only under –m64
|
|
| PUSHF
| push %eflags onto stack
|
|
|
| PUSHFL
| push %eflags onto stack
| pushfq valid only under –m64
|
|
| SAHF
| store %ah register into flags
|
|
|
| STC
| set carry flag
|
|
|
| STD
| set direction flag
|
|
|
| STI
| set interrupt flag
|
|
|