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dup.s
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1975-05-13
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186 b
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20 lines
/ C library -- dup
/ f = dup(of)
/ f == -1 for error
dup = 41.
.globl _dup, cerror
_dup:
mov r5,-(sp)
mov sp,r5
mov 4(r5),r0
sys dup
bec 1f
jmp cerror
1:
mov (sp)+,r5
rts pc