2.11BSD#431 - /usr/src/lib/libc/pdp/sys/pipe.s

   1: /*
   2:  * Copyright (c) 1987 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  */
   6: 
   7: #ifdef SYSLIBC_SCCS
   8: _sccsid: <@(#)pipe.s	2.6 (2.11BSD GTE) 1995/05/08\0>
   9:         .even
  10: #endif SYSLIBC_SCCS
  11: 
  12: /*
  13:  * XXX - this routine can't use SYSCALL!!!
  14:  */
  15: #include "SYS.h"
  16: 
  17: ENTRY(pipe)
  18:         SYS(pipe)
      /
      /   trap 42 -> [kernel] -> syscall() -> via sysent[] -> handler: pipe
      /
  19:         bes     1f
  20:         mov     r2,-(sp)
  21:         mov     4(sp),r2
  22:         mov     r0,(r2)+
  23:         mov     r1,(r2)
  24:         mov     (sp)+,r2
  25:         clr     r0
  26:         rts     pc
  27: 1:
  28:         jmp     x_error

Defined functions