%include "io.inc"

                    SECTION .text
                    GLOBAL CMAIN
                    CMAIN:
                        SUB     ESP, 4
                        GET_UDEC    4, [ESP]
                        CALL    F
                        ADD     ESP, 4
                        PRINT_DEC   4, EAX
                        NEWLINE
                        XOR     EAX, EAX
                        RET

                    F:
                        MOV     EAX, 32
                        CMP     DWORD [ESP], .R
                        CMOVNZ  ECX, EAX
                        CMOVZ   ECX, DWORD [ESP + 8]
                        MOV     EAX, DWORD [ESP + 4]
                        AND     ECX, ECX
                        JNZ     .L
                        XOR     EAX, EAX
                        RET
                    .L:
                        PUSH    EBX
                        MOV     EBX, EAX
                        AND     EBX, 1
                        SHR     EAX, 1
                        DEC     ECX
                        PUSH    ECX
                        PUSH    EAX
                        CALL    F
                    .R:
                        ADD     ESP, 8
                        INC     EAX
                        SUB     EAX, EBX
                        POP     EBX
                        RET