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Wed May 22 00:40:50 1996 David Mosberger-Tang <davidm@azstarnet.com>

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* sysdeps/unix/sysv/linux/alpha/llseek.S: New file.
This commit is contained in:
Roland McGrath 1996-05-23 05:32:30 +00:00
parent 15999cfb4c
commit 65e888acf5
1 changed files with 49 additions and 0 deletions
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sysdeps/unix/sysv/linux/alpha/llseek.S Normal file
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/* 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. */
/* For compatibility only: a "long" is 64 bits on the Alpha, so
llseek() isn't really needed. But there are some programs out
there who may depend on it being around.
*/
#include <sysdep.h>
.text
ENTRY(llseek)
.prologue 0
mov a3, t0 /* save result address */
sll a1, 32, a1 /* build a 64 bit ofs out of 32 bit operands */
zap a2, 0xf0, a2
bis a2, a1, a1
mov a4, a2 /* shift down whence */
ldi v0, __NR_lseek
call_pal PAL_callsys
bne a3, error
stq v0, 0(t0)
ret
error: br gp, 1f
1: ldgp gp, 0(gp)
jmp zero, syscall_error
.end llseek