.text
        .global process
process:
        pushl   %ebp
        movl    %esp, %ebp
        pushl   %edi
        pushl   %esi
        pushl   %ecx
        movl    8(%ebp), %eax
        movl    12(%ebp), %esi
        movl    16(%ebp), %edx
        movl    $3, %ecx
        imull   %ecx
        jo      overflow
        movl    %eax, %edi
        movl    $2, %ecx
        movl    %esi, %eax
        imull   %ecx
        jo      overflow
        subl    %edi, %eax
        jo      overflow
        movl    %eax, (%edx)
        movl    $1, %eax
        popl    %ecx
        popl    %esi
        popl    %edi
        movl    %ebp, %esp
        popl    %ebp
        ret
overflow:
        movl    $0, %eax
        popl    %ecx
        popl    %esi
        popl    %edi
        movl    %ebp, %esp






        popl    %ebp
        ret