diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/alpha/pipe.S')
| -rw-r--r-- | sysdeps/unix/sysv/linux/alpha/pipe.S | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/pipe.S b/sysdeps/unix/sysv/linux/alpha/pipe.S new file mode 100644 index 0000000000..f613b08fe0 --- /dev/null +++ b/sysdeps/unix/sysv/linux/alpha/pipe.S @@ -0,0 +1,43 @@ +/* Copyright (C) 1993, 1995 Free Software Foundation, Inc. + Contributed by David Mosberger (davidm@cs.arizona.edu). + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +/* __pipe is a special syscall since it returns two values. */ + +#include <sysdep.h> + + .text +ENTRY(__pipe) + .prologue 0 + + ldi v0, __NR_pipe + call_pal PAL_callsys + bne a3, error + + stl r0, 0(a0) + stl r1, 4(a0) + mov zero, v0 + ret + +error: br gp, 1f +1: ldgp gp, 0(gp) + lda pv, syscall_error + jmp zero, (pv) + + .end __pipe + +weak_alias (__pipe, pipe) |