|
| |
Return from Procedure
|
86/88 |
Y |
186 |
Y |
286 |
Y |
386 |
Y |
486 |
Y |
RET/RETF [n bytes] |
|
Ovfl |
N |
Dir |
N |
Int |
N |
Trap |
N |
Sign |
N |
Zero |
N |
Aux |
N |
Prty |
N |
Carry |
N |
RET transfers control from a called procedure back to the instruction
following the CALL, by:
: Popping the word at the top of the stack into IP
: If the return is an intersegment return:
: Popping the word now at the top of the stack into CS
: Adding the optional-pop-value, if specified, to SP
The assembler will generate an intrasegment RET if the procedure
containing the RET was designated by the programmer as NEAR, and an
intersegment RET if it was designated FAR. The optional-pop-value
specifies a value to be added to SP, which has the effect of popping
the specified number of bytes from the top of the stack.
------------------------------------ Timing ----------------------------------
OpCode Instruction 386 286 86
C3 RET 10+m 11 16
CB RETF 18+m 15 26
lesser priviledge 32+m 55
C2 iw RET imm16 10+m 11 20
CA iw RETF imm16 18+m 15 25
lesser priviledge 32+m 55
------------------------------------ Logic -----------------------------------
POP IP
if FAR RETURN (inter-segment)
POP CS
SP = SP + optional bytes
See Also IRET CALL JMP |