ack/mach/pmds4/libsys/pipe.s

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.define _pipe
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.sect .text
.sect .rom
.sect .data
.sect .bss
.sect .text
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.extern _pipe
_pipe: trap #0
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.data2 0x2A
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bcc 1f
jmp cerror
1:
move.l 4(sp),a0
move.l d0,(a0)+
move.l d1,(a0)
clr.l d0
rts