int array 1 [H][J]; int array2[J][H]; void copy_array(int x, int y) { array2[x][y] = array1[y][x]; } Suppose the above C code generates the following x86-64 assembly code: #%edi = x #%esi = y copy_array: movslq %esi,%rsi movslq %edi,%rdi movq %rdi, %rax salq $4, %rax subq %rdi, %rax addq %rsi, %rax leaq (%rsi,%rsi,4), %rsi leaq (%rdi,%rsi,2), %rsi movl array 1(,%rsi,4), %edx movl %edx, array2(,%rax,4) ret Assuming sizeof(int)-4, what are the values of H and J?

int array 1 [H][J]; int array2[J][H]; void copy_array(int x, int y) { array2[x][y] = array1[y][x]; } Suppose the above C code generates the following x86-64 assembly code: #%edi = x #%esi = y copy_array: movslq %esi,%rsi movslq %edi,%rdi movq %rdi, %rax salq $4, %rax subq %rdi, %rax addq %rsi, %rax leaq (%rsi,%rsi,4), %rsi leaq (%rdi,%rsi,2), %rsi movl array 1(,%rsi,4), %edx movl %edx, array2(,%rax,4) ret Assuming sizeof(int)-4, what are the values of H and J?

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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Question

int array 1 [H][J];
int array2[J][H];
void copy_array(int x, int y) {
array2[x][y] = array1[y][x];
}
Suppose the above C code generates the following x86-64 assembly code:
#%edi = x
#%esi = y
copy_array:
movslq %esi,%rsi
movslq %edi,%rdi
movq %rdi, %rax
salq $4, %rax
subq %rdi, %rax
addq %rsi, %rax
leaq (%rsi,%rsi,4), %rsi
leaq (%rdi,%rsi,2), %rsi
movl array1(,%rsi,4), %edx
movl %edx, array2(,%rax,4)
ret
Assuming sizeof(int)-4, what are the values of H and J?

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