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Annotation of 41BSD/cmd/px/20con.s, revision 1.1

1.1     ! root        1: #
        !             2: # Copyright (c) 1979 Regents of the University of California
        !             3: #
        !             4: # char sccsid[] = "@(#)20con.s 4.1 10/10/80";
        !             5: #
        !             6: # CONOPS
        !             7: #
        !             8: _CON1:
        !             9:        cvtbw   (r10)+,-(sp)
        !            10:        jmp     (r8)
        !            11: _CON14:
        !            12:        cvtbl   (r10)+,-(sp)
        !            13:        jmp     (r8)
        !            14: _CON2:
        !            15:        incl    r10
        !            16:        movw    (r10)+,-(sp)
        !            17:        jmp     (r8)
        !            18: _CON24:
        !            19:        incl    r10
        !            20:        cvtwl   (r10)+,-(sp)
        !            21:        jmp     (r8)
        !            22: _CON4:
        !            23:        incl    r10
        !            24:        pushl   (r10)+
        !            25:        jmp     (r8)
        !            26: _CON8:
        !            27:        incl    r10
        !            28:        movd    (r10)+,-(sp)
        !            29:        jmp     (r8)
        !            30: _CON:
        !            31:        cvtbl   (r10)+,r0
        !            32:        bneq    l2001
        !            33:        movzwl  (r10)+,r0       #r0 has length to be moved
        !            34: l2001:
        !            35:        movl    r10,r1          #r1 has addr of data to be moved
        !            36:        movl    r0,r2           #r2 has length of stack space
        !            37:        blbc    r2,l2002
        !            38:        incl    r2
        !            39: l2002:
        !            40:        subl2   r2,sp           #allocate stack space
        !            41:        addl2   r2,r10          #advance over data
        !            42:        movc5   r0,(r1),$0,r2,(sp)   #move string to stack
        !            43:        jmp     (r8)
        !            44: _LVCON:
        !            45:        cvtbl   (r10)+,r0       #r0 has literal string length
        !            46:        bneq    l2003
        !            47:        movzwl  (r10)+,r0
        !            48: l2003:
        !            49:        pushl   r10             #address of literal
        !            50:        addl2   r0,r10          #jump over literal
        !            51:        jmp     (r8)

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