Given assembly code: # i in %rdi, bp in %rsi test: mov 0x120(%rsi), %ecx add (%rsi), %ecx lea (%rdi,%rdi,4), %rax lea (%rsi,%rax,8), %rax mov 0x8(%rax), %rdx movslq %ecx, %rcx mov %rcx, 0x10(%rax,%rdx,8) retq Explanation: The instruction “mov 0x120(%rsi), %ecx” computes “bp+0x120” and fetches “bp->last”. The instruction “add (%rsi), %ecx” performs operation “bp->first + bp->last”. The instruction “lea (%rdi,%rdi,4), %rax” performs operation “i5”. The instruction “lea (%rsi,%rax,8), %rax” performs operation “bp +i40”...

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Chapter 3, Problem 3.69HW

A.

Explanation of Solution

Given assembly code:

# i in %rdi, bp in %rsi

test:

mov 0x120(%rsi), %ecx

add (%rsi), %ecx

lea (%rdi,%rdi,4), %rax

lea (%rsi,%rax,8), %rax

mov 0x8(%rax), %rdx

movslq %ecx, %rcx

mov %rcx, 0x10(%rax,%rdx,8)

retq

Explanation:

The instruction “mov 0x120(%rsi), %ecx” computes “bp+0x120” and fetches “bp->last”.

The instruction “add (%rsi), %ecx” performs operation “bp->first + bp->last”.

The instruction “lea (%rdi,%rdi,4), %rax” performs operation “i5”.

The instruction “lea (%rsi,%rax,8), %rax” performs operation “bp +i40”...

B.

Explanation of Solution

Complete declaration of structure:

typedef struct

{

long idx,

long x[4]

}a_struct

Explanation:

The struct “...

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