Explain what the following Non-Leaf Assembly commands

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Explain what the following Non-Leaf Assembly commands are doing.

 

fact:
addi $sp,$sp, -8
sw $ra, 4($sp)
sw $a0, 0($sp)
slti $t0, $a0, 1
beq_$t0, $zero, L1
addi $v0, $zero, 1
addi $sp,$sp, 8
jr $ra
L1: addi $a0, $a0, -1
jal fact
lw $a0, 0($sp)
lw $ra, 4($sp)
addi $sp,$sp, 8
mult $v0, $a0
mflo $v0
jr $ra
Transcribed Image Text:fact: addi $sp,$sp, -8 sw $ra, 4($sp) sw $a0, 0($sp) slti $t0, $a0, 1 beq_$t0, $zero, L1 addi $v0, $zero, 1 addi $sp,$sp, 8 jr $ra L1: addi $a0, $a0, -1 jal fact lw $a0, 0($sp) lw $ra, 4($sp) addi $sp,$sp, 8 mult $v0, $a0 mflo $v0 jr $ra
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