ack/plat/pdpv7/libsys/pipe.s

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ArmAsm
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#include "sys.h"
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.define _pipe
.extern _errno
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_pipe:
sys pipe
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bcc 1f
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mov r0,_errno
mov $-1,r0
rts pc
1:
mov r5,-(sp)
mov 4(sp),r5
mov r0,(r5)+
mov r1,(r5)
mov (sp)+,r5
clr r0
rts pc