Miscellany

        .file   "fact.c"
        .section        .rodata.str1.1,"aMS",@progbits,1
.LC0:
        .string "%d\n"
        .text
        .p2align 2,,3
.globl main
        .type   main, @function
main:
        pushl   %ebp
        movl    %esp, %ebp
        pushl   %ebx
        pushl   %ecx
        andl    $-16, %esp
        subl    $28, %esp
        movl    12(%ebp), %eax
        pushl   4(%eax)
        call    atoi
        movl    %eax, %ebx
        popl    %eax
        popl    %edx
        pushl   %ebx
        pushl   $.LC0
        call    printf
        addl    $16, %esp
        testl   %ebx, %ebx
        jne     .L2
        movl    $1, %ecx
        movl    %ecx, 12(%ebp)
        movl    $.LC0, 8(%ebp)
        movl    -4(%ebp), %ebx
        leave
        jmp     printf
        .p2align 2,,3
.L2:
        movl    $1, %ecx
        xorl    %edx, %edx
        .p2align 2,,3
.L5:
        movl    %ebx, %eax
        subl    %edx, %eax
        imull   %eax, %ecx
        incl    %edx
        cmpl    %edx, %ebx
        jne     .L5
        movl    %ecx, 12(%ebp)
        movl    $.LC0, 8(%ebp)
        movl    -4(%ebp), %ebx
        leave
        jmp     printf
        .size   main, .-main
        .ident  "GCC: (GNU) 4.0.1 20050727 (Red Hat 4.0.1-5)"
        .section        .note.GNU-stack,"",@progbits