Figure a6. stack frame for procedure c at level 3 – Intel 80C188XL User Manual

Page 314

Advertising
background image

A-7

80C186 INSTRUCTION SET ADDITIONS AND EXTENSIONS

Figure A-6. Stack Frame for Procedure C at Level 3 Called from B

LEAVE

LEAVE reverses the action of the most recent ENTER instruction. It collapses the last stack
frame created. First, LEAVE copies the current BP to the Stack Pointer, releasing the stack space
allocated to the current procedure. Second, LEAVE pops the old value of BP from the stack, to
return to the calling procedure's stack frame. A RET instruction will remove arguments stacked
by the calling procedure for use by the called procedure.

Old BP

BP

SP

15

0

BPM

BPM

BPM

BPA

BPM

BPA

BPA

BPB

BPB

BPM

BPA

BPC

Display C

Dynamic

Storage C

A1005-0A

Advertising
This manual is related to the following products: