mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-03 10:21:05 +00:00
242 lines
4.8 KiB
ArmAsm
242 lines
4.8 KiB
ArmAsm
/* Copyright (C) 1998, 2002, 2003 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-cancel.h>
|
|
#define _ERRNO_H 1
|
|
#include <bits/errno.h>
|
|
#include "kernel-features.h"
|
|
|
|
.text
|
|
|
|
#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
|
|
#define SELECT __select_tv64
|
|
#else
|
|
#define SELECT __select
|
|
#endif
|
|
|
|
#if defined __ASSUME_TIMEVAL64
|
|
PSEUDO(SELECT, select, 5)
|
|
ret
|
|
PSEUDO_END(SELECT)
|
|
#else
|
|
/* 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
|
|
|
|
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
|
|
stq ra, 40(sp)
|
|
.mask 0x4000000, 40-64
|
|
.prologue 1
|
|
|
|
#ifdef CENABLE
|
|
SINGLE_THREAD_P (t1)
|
|
#else
|
|
ldl t0, __libc_missing_axp_tv64
|
|
#endif
|
|
|
|
/* Save timeout early, since we'll need to recover this after
|
|
the system call. */
|
|
stq a4, 48(sp)
|
|
|
|
#ifdef CENABLE
|
|
bne t1, $do_cancel
|
|
#endif
|
|
|
|
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
|
|
|
|
#ifdef CENABLE
|
|
.align 3
|
|
$do_cancel:
|
|
/* Save arguments. */
|
|
stq a0, 8(sp)
|
|
stq a1, 16(sp)
|
|
stq a2, 24(sp)
|
|
stq a3, 32(sp)
|
|
|
|
CENABLE
|
|
mov v0, ra
|
|
|
|
ldl t0, __libc_missing_axp_tv64
|
|
bne t0, $do_cancel32
|
|
|
|
/* Recover the saved arguments. */
|
|
ldq a4, 48(sp)
|
|
ldq a3, 32(sp)
|
|
ldq a2, 24(sp)
|
|
ldq a1, 16(sp)
|
|
ldq a0, 8(sp)
|
|
|
|
ldi v0, SYS_ify(select)
|
|
callsys
|
|
|
|
mov ra, a0
|
|
bne a3, $cancel_err64
|
|
|
|
stq v0, 8(sp)
|
|
CDISABLE
|
|
ldq v0, 8(sp)
|
|
ldq ra, 40(sp)
|
|
|
|
/* Everything ok. */
|
|
addq sp, 64, sp
|
|
ret
|
|
|
|
/* If we didn't get ENOSYS, it is a real error. */
|
|
.align 3
|
|
$cancel_err64:
|
|
cmpeq v0, ENOSYS, t0
|
|
beq t0, $cancel_error
|
|
stl t0, __libc_missing_axp_tv64
|
|
|
|
/* Recover the saved arguments. */
|
|
.align 3
|
|
$do_cancel32:
|
|
ldq a4, 48(sp)
|
|
ldq a3, 32(sp)
|
|
ldq a2, 24(sp)
|
|
ldq a1, 16(sp)
|
|
ldq a0, 8(sp)
|
|
|
|
/* 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
|
|
|
|
mov ra, a0
|
|
bne a3, $cancel_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: stq v0, 8(sp)
|
|
CDISABLE
|
|
ldq v0, 8(sp)
|
|
ldq ra, 40(sp)
|
|
|
|
addq sp, 64, sp
|
|
ret
|
|
|
|
.align 3
|
|
$cancel_error:
|
|
stq v0, 8(sp)
|
|
CDISABLE
|
|
ldq v0, 8(sp)
|
|
ldq ra, 40(sp)
|
|
#endif
|
|
|
|
.align 3
|
|
$error:
|
|
addq sp, 64, sp
|
|
SYSCALL_ERROR_HANDLER
|
|
|
|
END(SELECT)
|
|
#endif /* __ASSUME_TIMEVAL64 */
|
|
|
|
#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)
|
|
strong_alias (__select_tv64, __libc_select)
|
|
#else
|
|
strong_alias (__select, __libc_select)
|
|
weak_alias (__select, select)
|
|
libc_hidden_def (__select)
|
|
#endif
|