Intel 210200-002 manual Returnret, RET optional-pap-value

RET

RETURNRET

Operation:

(IP) ~ ((SP) + 1:(SP))
(SP) +- (SP) + 2	.
if Inter-Segment then

(CS) +- ((SP) + 1:(SP)) (SP) +- (SP) + 2

if Add Immediate to Stack Pointer then (SP) +- (SP) + data

Flags AUected:

None

Description:

RET optional-pap-value

RET (Return transfers control from a pro- cedure back to the instruction following the CALL that activated the procedure. The assembler generates an intrasegment RET if the programmer has defined the procedure NEAR, or an intersegment RET if the pro- cedure has been defined as FAR. RET pops the word at the top of the stack (pointed to by register SP) into the instruction pointer and

increments SP by two. If RET is intersegment, the word at the new top of stack is popped into the CS register, and SP is again incremented by two. If an optional pop value has been specified, RET adds that value to SP. This feature may be used to discard parameters pushed onto the stack before the execution of the CALL instruction.

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