Consider the following ARM assembly code: functionl: push (rt-r10, fpi add fp, sp.28 add sp, sp. add r4,r0,rl add r5,r2,r3 add r6,r4,rS II allocate local variable space I/ 15-r2+r3 stz ldr r0, Ifp, t-121 1/ rl=A 824'dz'de qns pop (rd-rl0, fp} ba For the given ARM code, what is the minimal set of registers that must be saved by the routine "functionl" a) {r4-r5} b) {r4-r6} c) {r4} d) {r4-r10}

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
Problem 1PE
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Consider the following ARM assembly code:
functionl: push (r4-r10, fp)
fp, p,28
p, p.-
add r4,r0, rl
add r5,r2,r3
add r6,14,r5
str r6, [tp,t-321 // Ar4
ldr r0, Ifp, t-121 // rl=A
sub p, fp, 28
(r4-r10, fp)
add
I/ allocate local variable space
add
// r5er2+r3
// r6mr4+r5
pop
For the given ARM code, what is the minimal set of registers that must be saved by the routine
"functionl"
a) {r4-r5}
b) {r4-r6}
c) {r4}
d) {r4-r10}
Transcribed Image Text:Consider the following ARM assembly code: functionl: push (r4-r10, fp) fp, p,28 p, p.- add r4,r0, rl add r5,r2,r3 add r6,14,r5 str r6, [tp,t-321 // Ar4 ldr r0, Ifp, t-121 // rl=A sub p, fp, 28 (r4-r10, fp) add I/ allocate local variable space add // r5er2+r3 // r6mr4+r5 pop For the given ARM code, what is the minimal set of registers that must be saved by the routine "functionl" a) {r4-r5} b) {r4-r6} c) {r4} d) {r4-r10}
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