EXPORT Function Function stmfd sp!, {r2-r9, lr} mov r4, rl mov r3, r4 sub rl, rl, #1 mov r9, rl loopl mov r5, r0 mov r4, r3 add r2, r0, #4
EXPORT Function Function stmfd sp!, {r2-r9, lr} mov r4, rl mov r3, r4 sub rl, rl, #1 mov r9, rl loopl mov r5, r0 mov r4, r3 add r2, r0, #4
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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![1. Observe the following ARM Assembly code implementation of Function:
EXPORT Function
Function
stmfd sp!, {r2-r9, lr}
mov r4, rl
mov r3, r4
sub rl, r1,
#1
mov r9, rl
loopl
mov r5, r0
mov r4, r3
add r2, r0, #4
loop2
ldr r6, [r5], #4
ldr r7, [r2], #4
cmp r7, r6
strhs r6, [r2, #-4]
strhs r7, [r5, #-4]
subs r4, r 4, #1
loop2
subs r9, r9, #1
bne loopa
ldmfd sp!, {r2-r9, pc}^
END
Comment each line of this code and determine what this function does. Be specific about data
type (bytes, long etc.) and memory locations.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2970852e-149b-4644-a56f-abba999a76ef%2F8042d078-a517-4534-8c90-de3c91bf46e8%2Fnlx9nln_processed.png&w=3840&q=75)
Transcribed Image Text:1. Observe the following ARM Assembly code implementation of Function:
EXPORT Function
Function
stmfd sp!, {r2-r9, lr}
mov r4, rl
mov r3, r4
sub rl, r1,
#1
mov r9, rl
loopl
mov r5, r0
mov r4, r3
add r2, r0, #4
loop2
ldr r6, [r5], #4
ldr r7, [r2], #4
cmp r7, r6
strhs r6, [r2, #-4]
strhs r7, [r5, #-4]
subs r4, r 4, #1
loop2
subs r9, r9, #1
bne loopa
ldmfd sp!, {r2-r9, pc}^
END
Comment each line of this code and determine what this function does. Be specific about data
type (bytes, long etc.) and memory locations.
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