ack/plat/pdpv7/libsys/setuid.s

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ArmAsm
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#include "sys.h"
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.define _setuid
.extern _errno
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_setuid:
mov 2(sp),r0
sys setuid
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bcc 1f
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mov r0,_errno
mov $-1,r0
rts pc
1:
clr r0
rts pc