Question

#Quiz 7 Mystery Code .section .data data_items: .int 3,4,14,32,45,61,32,18,9,38,99,19 .section .text .globl _start _start: movq $0,%rdi movl data_items(,%rdi,4),%eax movl $0x19,%ebx movl $0, %ecx task_x: cmpl $19, %eax je z_exit incq %rdi movl data_items(,%rdi,4),%eax cmpl %ebx, %eax jle task_x incl %ecx jmp task_x z_exit: movl %ecx,%ebx movq $1,%rax int $0x80 # ld quiz7code.o -o quiz7code # ./quiz7code # as quiz7code.s -o quiz7code.o # echo $?

          #Quiz 7 Mystery Code
.section .data
data_items:
.int 3,4,14,32,45,61,32,18,9,38,99,19
.section .text
.globl _start
_start:
movq $0,%rdi
movl data_items(,%rdi,4),%eax
movl $0x19,%ebx
movl $0, %ecx
task_x:
cmpl $19, %eax
je z_exit
incq %rdi
movl data_items(,%rdi,4),%eax
cmpl %ebx, %eax
jle task_x
incl %ecx
jmp task_x
z_exit:
movl %ecx,%ebx
movq $1,%rax
int $0x80
# ld quiz7code.o -o quiz7code
# ./quiz7code
# as quiz7code.s -o quiz7code.o
# echo $?

#Quiz 7 Mystery Code
.section .data
dataitems:
.int 3,4,14,32,45,61,32,18,9,38,99,19
.section .text
.globl start
start:
movq 0,%rdi
movl dataitems(,%rdi,4),%eax
movl0x19,%ebx
movl 0, %ecx
taskx:
cmpl19, %eax
je zexit
incq %rdi
movl dataitems(,%rdi,4),%eax
cmpl %ebx, %eax
jle taskx
incl %ecx
jmp taskx
zexit:
movl %ecx,%ebx
movq 1,%rax
int0x80
# ld quiz7code.o -o quiz7code
# ./quiz7code
# as quiz7code.s -o quiz7code.o
# echo ?

Added by Claudia Q.

Computer Science and Information Technology

Trishna Knowledge Systems 2018 Edition

Instant Answer

Solved by Expert Akash M

11/12/2023

Step 1

We need to change the sentinel value from 19 to the base 10 equivalent of 2A (base 16). - The base 10 equivalent of 2A (base 16) is 42. - So, we need to change the line `movl $0x19, %ebx` to `movl $42, %ebx`. Show more…

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Thanks for your feedback!

Modify the quiz7code.s file to count the numbers less than 23 (base 16). REQUIRED SPECIFICATIONS: Use the list of numbers provided, but change the sentinel value from 19, a base 10 value (Hint), to the base 10 equivalent of 2A (base 16). Make sure all the values in the list are checked (hint: one of them is not being checked).