1 /* Copyright (C) 1998,2002,2003,2006,2012 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library. If not, see
16 <http://www.gnu.org/licenses/>. */
18 #include <sysdep-cancel.h>
20 #include <bits/errno.h>
21 #include <kernel-features.h>
25 #if defined PIC && defined DO_VERSIONING
26 #define SELECT __select_tv64
28 #define SELECT __select
31 #if defined __ASSUME_TIMEVAL64
32 PSEUDO(SELECT, select, 5)
36 /* The problem here is that initially we made struct timeval compatible with
37 OSF/1, using int32. But we defined time_t with uint64, and later found
38 that POSIX requires tv_sec to be time_t.
40 So now we have to do compatibility stuff. */
42 /* The variable is shared between all wrappers around signal handling
43 functions which have RT equivalents. */
44 .comm __libc_missing_axp_tv64, 4
56 .mask 0x4000000, 40-64
62 ldl t0, __libc_missing_axp_tv64
65 /* Save timeout early, since we'll need to recover this after
75 /* Save arguments in case we do need to fall back. */
81 ldi v0, SYS_ify(select)
89 /* If we didn't get ENOSYS, it is a real error. */
91 $err64: cmpeq v0, ENOSYS, t0
93 stl t0, __libc_missing_axp_tv64
95 /* Recover the saved arguments. */
104 /* If the timeout argument is present bounce to the smaller fmt. */
112 1: ldi v0, SYS_ify(osf_select)
116 /* ... and bounce the remaining timeout back. */
130 /* Save arguments. */
139 ldl t0, __libc_missing_axp_tv64
142 /* Recover the saved arguments. */
149 ldi v0, SYS_ify(select)
153 bne a3, $cancel_err64
164 /* If we didn't get ENOSYS, it is a real error. */
168 beq t0, $cancel_error
169 stl t0, __libc_missing_axp_tv64
171 /* Recover the saved arguments. */
180 /* If the timeout argument is present bounce to the smaller fmt. */
188 1: ldi v0, SYS_ify(osf_select)
192 bne a3, $cancel_error
194 /* ... and bounce the remaining timeout back. */
221 SYSCALL_ERROR_HANDLER
224 #endif /* __ASSUME_TIMEVAL64 */
226 #if defined PIC && defined DO_VERSIONING
227 default_symbol_version (__select_tv64, __select, GLIBC_2.1)
229 /* It seems to me to be a misfeature of the assembler that we can only
230 have one version-alias per symbol. So create an alias ourselves.
231 The 'p' is for 'public'. *Shrug* */
232 strong_alias (__select_tv64, __select_tv64p)
233 default_symbol_version (__select_tv64p, select, GLIBC_2.1)
234 libc_hidden_ver (__select_tv64, __select)
235 strong_alias (__select_tv64, __libc_select)
237 strong_alias (__select, __libc_select)
238 weak_alias (__select, select)
239 libc_hidden_def (__select)