glibc/sysdeps/unix/sysv/linux/alpha/select.S
Roland McGrath d5a256add3 2002-11-07 Richard Henderson <rth@redhat.com>
* elf/tls-macros.h: Add alpha versions.
	* sysdeps/alpha/dl-machine.h (elf_machine_rela): Handle TLS relocs.
	* sysdeps/unix/alpha/sysdep.S: Support USE___THREAD.
	* sysdeps/unix/alpha/sysdep.h: Likewise.  Add SYSCALL_ERROR_HANDLER.
	* sysdeps/unix/sysv/linux/alpha/brk.S: Use it.
	* sysdeps/unix/sysv/linux/alpha/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/getitimer.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/getrusage.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/gettimeofday.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/ieee_get_fp_control.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/ieee_set_fp_control.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/rt_sigaction.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/select.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/setitimer.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/settimeofday.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/sigsuspend.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/syscall.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/utimes.S: Likewise.
	* sysdeps/unix/sysv/linux/alpha/wait4.S: Likewise.
2002-11-08 02:18:48 +00:00

132 lines
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ArmAsm

/* Copyright (C) 1998, 2002 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <sysdep.h>
#define _ERRNO_H 1
#include <bits/errno.h>
/* The problem here is that initially we made struct timeval compatible with
OSF/1, using int32. But we defined time_t with uint64, and later found
that POSIX requires tv_sec to be time_t.
So now we have to do compatibility stuff. */
/* The variable is shared between all wrappers around signal handling
functions which have RT equivalents. */
.comm __libc_missing_axp_tv64, 4
.text
#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
#define SELECT __select_tv64
#else
#define SELECT __select
#endif
LEAF(SELECT, 64)
ldgp gp, 0(pv)
subq sp, 64, sp
#ifdef PROF
.set noat
lda AT, _mcount
jsr AT, (AT), _mcount
.set at
#endif
.prologue 1
ldl t0, __libc_missing_axp_tv64
/* Save timeout early, since we'll need to recover this after
the system call. */
stq a4, 48(sp)
bne t0, $do32
/* Save arguments in case we do need to fall back. */
stq a0, 8(sp)
stq a1, 16(sp)
stq a2, 24(sp)
stq a3, 32(sp)
ldi v0, SYS_ify(select)
callsys
bne a3, $err64
/* Everything ok. */
addq sp, 64, sp
ret
/* If we didn't get ENOSYS, it is a real error. */
.align 3
$err64: cmpeq v0, ENOSYS, t0
beq t0, $error
stl t0, __libc_missing_axp_tv64
/* Recover the saved arguments. */
ldq a4, 48(sp)
ldq a3, 32(sp)
ldq a2, 24(sp)
ldq a1, 16(sp)
ldq a0, 8(sp)
.align 3
$do32:
/* If the timeout argument is present bounce to the smaller fmt. */
beq a4, 1f
ldq t0, 0(a4)
ldq t1, 8(a4)
stl t0, 0(sp)
stl t1, 4(sp)
mov sp, a4
1: ldi v0, SYS_ify(osf_select)
callsys
bne a3, $error
/* ... and bounce the remaining timeout back. */
ldq a4, 48(sp)
beq a4, 2f
ldl t0, 0(sp)
ldl t1, 4(sp)
stq t0, 0(a4)
stq t1, 8(a4)
2: addq sp, 64, sp
ret
.align 3
$error:
addq sp, 64, sp
SYSCALL_ERROR_HANDLER
END(SELECT)
#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
default_symbol_version (__select_tv64, __select, GLIBC_2.1)
/* It seems to me to be a misfeature of the assembler that we can only
have one version-alias per symbol. So create an alias ourselves.
The 'p' is for 'public'. *Shrug* */
strong_alias (__select_tv64, __select_tv64p)
default_symbol_version (__select_tv64p, select, GLIBC_2.1)
libc_hidden_ver (__select_tv64, __select)
#else
weak_alias (__select, select)
libc_hidden_def (__select)
#endif