proci: addi $sp. $sPissp) $sp, $sp, -4 $ra, Ō ($sp) proc2 SW jal lw addi jr $ra, 0 ($sp) $sp, $sp, 4 $ra proc2: $sp, $sp, -4 $ra, 0 ($sp) proc3 addi SW jal lw addi $ra, 0($sp) $sp, $sp, 4 $ra jr

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter18: Stacks And Queues
Section: Chapter Questions
Problem 10PE
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Multiple Procedure Calls
procl:
addi $sp, $sp, -4
$ra, O ($sp)
proc2
SW
jal
$ra, 0($sp)
$sp, $sp, 4
$ra
lw
addi
jr
proc2:
$sp, $sp, -4
$ra, 0 ($sp)
proc3
addi
SW
jal
• ..
lw
addi
$ra, 0($sp)
$sp, $sp, 4
$ra
jr
proc3:
...
jr
$ra
%24
Transcribed Image Text:Show Stack Contents Multiple Procedure Calls procl: addi $sp, $sp, -4 $ra, O ($sp) proc2 SW jal $ra, 0($sp) $sp, $sp, 4 $ra lw addi jr proc2: $sp, $sp, -4 $ra, 0 ($sp) proc3 addi SW jal • .. lw addi $ra, 0($sp) $sp, $sp, 4 $ra jr proc3: ... jr $ra %24
Show Stack Contents
Recursive Procedure fact(3)
fact:
$sp,$sp,8
$ra, 4 ($sp)
$a0,0 ($sp)
$t0,$a0,1
$t0,$zero,L1
$v0, $zero,1
$sp,$sp,8
$ra
sub
SW
SW
slt
beq
add
add
jr
L1:
sub
$a0,$a0,1
jal
lw
fact
$a0,0 ($sp)
$ra, 4 ($sp)
$v0,$a0,$v0
$sp, $sp,8
$ra
lw
mul
add
jr
Transcribed Image Text:Show Stack Contents Recursive Procedure fact(3) fact: $sp,$sp,8 $ra, 4 ($sp) $a0,0 ($sp) $t0,$a0,1 $t0,$zero,L1 $v0, $zero,1 $sp,$sp,8 $ra sub SW SW slt beq add add jr L1: sub $a0,$a0,1 jal lw fact $a0,0 ($sp) $ra, 4 ($sp) $v0,$a0,$v0 $sp, $sp,8 $ra lw mul add jr
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