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Annotation of researchv10no/cmd/PDP11/crt/csv.s, revision 1.1

1.1     ! root        1: / C register save and restore -- version 7/75
        !             2: 
        !             3: .globl csv
        !             4: .globl cret
        !             5: 
        !             6: csv:
        !             7:        mov     r5,r0
        !             8:        mov     sp,r5
        !             9:        mov     r4,-(sp)
        !            10:        mov     r3,-(sp)
        !            11:        mov     r2,-(sp)
        !            12:        jsr     pc,(r0)         / jsr part is sub $2,sp
        !            13: 
        !            14: cret:
        !            15:        mov     r5,r2
        !            16:        mov     -(r2),r4
        !            17:        mov     -(r2),r3
        !            18:        mov     -(r2),r2
        !            19:        mov     r5,sp
        !            20:        mov     (sp)+,r5
        !            21:        rts     pc

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