(gdb) disas /m main
Dump of assembler code for function main:
   0x0804843b <+0>:     lea    0x4(%esp),%ecx
   0x0804843f <+4>:     and    $0xfffffff0,%esp
   0x08048442 <+7>:     pushl  -0x4(%ecx)
   0x08048445 <+10>:    push   %ebp
   0x08048446 <+11>:    mov    %esp,%ebp
   0x08048448 <+13>:    push   %ecx
   0x08048449 <+14>:    sub    $0x54,%esp
   0x0804844c <+17>:    mov    %ecx,%eax
   0x0804844e <+19>:    mov    0x4(%eax),%eax
   0x08048451 <+22>:    mov    %eax,-0x4c(%ebp)
   0x08048454 <+25>:    mov    %gs:0x14,%eax
   0x0804845a <+31>:    mov    %eax,-0xc(%ebp)
   0x0804845d <+34>:    xor    %eax,%eax
   0x0804845f <+36>:    movl   $0x8048570,-0x48(%ebp)
   0x08048466 <+43>:    movl   $0x3,-0x44(%ebp)
   0x0804846d <+50>:    movl   $0x9,-0x40(%ebp)
   0x08048474 <+57>:    movl   $0xe,-0x3c(%ebp)
   0x0804847b <+64>:    movl   $0x2,-0x38(%ebp)
   0x08048482 <+71>:    movl   $0x9,-0x34(%ebp)
   0x08048489 <+78>:    movl   $0x8,-0x30(%ebp)
   0x08048490 <+85>:    movl   $0xb,-0x2c(%ebp)
   0x08048497 <+92>:    movl   $0x15,-0x28(%ebp)
---Type <return> to continue, or q <return> to quit---
   0x0804849e <+99>:    movl   $0x13,-0x24(%ebp)
   0x080484a5 <+106>:   movl   $0x3,-0x20(%ebp)
   0x080484ac <+113>:   movl   $0x1,-0x1c(%ebp)
   0x080484b3 <+120>:   movl   $0x2,-0x18(%ebp)
   0x080484ba <+127>:   movl   $0x5,-0x14(%ebp)
   0x080484c1 <+134>:   movl   $0x5,-0x10(%ebp)
   0x080484c8 <+141>:   mov    $0x0,%eax
   0x080484cd <+146>:   mov    -0xc(%ebp),%edx
   0x080484d0 <+149>:   xor    %gs:0x14,%edx
   0x080484d7 <+156>:   je     0x80484de <main+163>
   0x080484d9 <+158>:   call   0x8048310 <__stack_chk_fail@plt>
   0x080484de <+163>:   add    $0x54,%esp
   0x080484e1 <+166>:   pop    %ecx
   0x080484e2 <+167>:   pop    %ebp
   0x080484e3 <+168>:   lea    -0x4(%ecx),%esp
   0x080484e6 <+171>:   ret    
End of assembler dump.
(gdb)