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Annotation of 40BSD/cmd/px/20con.s, revision 1.1.1.1

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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