main.c

#include "proc.h"

int main(int argc, char *argv[]) {

int x = 42;

proc(x);

}

; Generated assembly code ------------------

_main:

push rbp

mov rbp, rsp

;

mov dword ptr [rbp - 20], 42

mov edi, dword ptr [rbp - 20]

call _proc

xor eax, eax

;

pop rbp

ret

proc.c

#include "proc.h"

#include

void proc(int val) {

printf("The parameter value was %d ", val);

}

; Generated assembly language

_proc:

push rbp

mov rbp, rsp

;-----------------------------

mov rax, L_.str

mov dword ptr [rbp - 4], edi

mov esi, dword ptr [rbp - 4]

mov rdi, rax

mov al, 0

call _printf

;-----------------------------

pop rbp

ret

L_.str:

.asciz "The parameter value was %d "

1. explain the code marked off by the lines between the ;------ markers in the assembly language.

2. how the proc procedure found the parameter it needed to generate the message, and how that value was sent to the printf function.