(gdb) disas welcome
Dump of assembler code for function welcome:
   0x08048609 <+0>:     push   %ebp
   0x0804860a <+1>:     mov    %esp,%ebp
   0x0804860c <+3>:     sub    $0x88,%esp
   0x08048612 <+9>:     mov    %gs:0x14,%eax
   0x08048618 <+15>:    mov    %eax,-0xc(%ebp)
   0x0804861b <+18>:    xor    %eax,%eax
   0x0804861d <+20>:    mov    $0x80487cb,%eax
   0x08048622 <+25>:    mov    %eax,(%esp)
   0x08048625 <+28>:    call   0x8048420 <printf@plt>
   0x0804862a <+33>:    mov    $0x80487dd,%eax
   0x0804862f <+38>:    lea    -0x70(%ebp),%edx
   0x08048632 <+41>:    mov    %edx,0x4(%esp)
   0x08048636 <+45>:    mov    %eax,(%esp)
   0x08048639 <+48>:    call   0x80484a0 <__isoc99_scanf@plt>
   0x0804863e <+53>:    mov    $0x80487e3,%eax
   0x08048643 <+58>:    lea    -0x70(%ebp),%edx
   0x08048646 <+61>:    mov    %edx,0x4(%esp)
   0x0804864a <+65>:    mov    %eax,(%esp)
   0x0804864d <+68>:    call   0x8048420 <printf@plt>
   0x08048652 <+73>:    mov    -0xc(%ebp),%eax
   0x08048655 <+76>:    xor    %gs:0x14,%eax
   0x0804865c <+83>:    je     0x8048663 <welcome+90>
   0x0804865e <+85>:    call   0x8048440 <__stack_chk_fail@plt>
   0x08048663 <+90>:    leave
   0x08048664 <+91>:    ret
End of assembler dump.