Question

Given the following C variable and its assembly storage:

Variable   Location
   i         %rax

Select the line of C code that translates to the following set of assembly instructions:

   test %rax,%rax
   jle 4008b9

Question options:

	if ( i >= 0 )
	if ( i < 0 )
	if ( i < 1 )

Answer 1

Given code:

test %rax,%rax
jle 4008b9

first instruction compares rax with itself means check if variable i is equal to 0 or less than 0 or grater than 0

second instruction jumps to given address if i is less than or equal to 0

jle meas Jump Less than or Equal

Answer:

if(i<1)