反汇编一个简单的C程序

#include <stdio.h>
int g(int x)
{
return x + 3;
}

int f(int x)
{
return g(x);
}

int main(void)
{
return f(8) + 1;
}

gcc -S -o test.s test.c -m32

.file	"test.c"
.text
.globl	g
.type	g, @function
g:
.LFB0:
.cfi_startproc
pushl	%ebp
.cfi_def_cfa_offset 8
.cfi_offset 5, -8
movl	%esp, %ebp
.cfi_def_cfa_register 5
movl	8(%ebp), %eax
addl	$3, %eax
popl	%ebp
.cfi_restore 5
.cfi_def_cfa 4, 4
ret
.cfi_endproc
.LFE0:
.size	g, .-g
.globl	f
.type	f, @function
f:
.LFB1:
.cfi_startproc
pushl	%ebp
.cfi_def_cfa_offset 8
.cfi_offset 5, -8
movl	%esp, %ebp
.cfi_def_cfa_register 5
subl	$4, %esp
movl	8(%ebp), %eax
movl	%eax, (%esp)
call	g
leave
.cfi_restore 5
.cfi_def_cfa 4, 4
ret
.cfi_endproc
.LFE1:
.size	f, .-f
.globl	main
.type	main, @function
main:
.LFB2:
.cfi_startproc
pushl	%ebp
.cfi_def_cfa_offset 8
.cfi_offset 5, -8
movl	%esp, %ebp
.cfi_def_cfa_register 5
subl	$4, %esp
movl	$8, (%esp)
call	f
addl	$1, %eax
leave
.cfi_restore 5
.cfi_def_cfa 4, 4
ret
.cfi_endproc
.LFE2:
.size	main, .-main
.ident	"GCC: (Ubuntu 4.8.2-19ubuntu1) 4.8.2"
.section	.note.GNU-stack,"",@progbits