gcc generates the following assembly code:
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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![gcc generates the following assembly code:
long dw_loop(long x)
x initially in %rdi
dw_loop:
movq %rdi, %rax
movq %rdi, %rcx
imulq %rdi, %rcx
leaq (%rdi, %rdi), %rdx
.L2
leaq 1(%rcx, %rах), %raх
subq $1, %rdx
testq %rdx, %rdx
jg L2
ret
1) Which registers are used to hold program values x, y, z?
2) Add annotations to the assembly code](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7d7164a9-5343-43f4-8aeb-d7689d994e47%2F8f47d428-6e63-4a27-97b9-0204a940fade%2Fuyoq3el_processed.png&w=3840&q=75)
Transcribed Image Text:gcc generates the following assembly code:
long dw_loop(long x)
x initially in %rdi
dw_loop:
movq %rdi, %rax
movq %rdi, %rcx
imulq %rdi, %rcx
leaq (%rdi, %rdi), %rdx
.L2
leaq 1(%rcx, %rах), %raх
subq $1, %rdx
testq %rdx, %rdx
jg L2
ret
1) Which registers are used to hold program values x, y, z?
2) Add annotations to the assembly code
![For the C code
int dw_loop(long x) {
long y = x* x;
long 'p - &x;
long n - 2*x
do {
x += y;
(*p)++;
n--;
} while (n > 0);
return x;
}](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F7d7164a9-5343-43f4-8aeb-d7689d994e47%2F8f47d428-6e63-4a27-97b9-0204a940fade%2Fzglkgyx_processed.png&w=3840&q=75)
Transcribed Image Text:For the C code
int dw_loop(long x) {
long y = x* x;
long 'p - &x;
long n - 2*x
do {
x += y;
(*p)++;
n--;
} while (n > 0);
return x;
}
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