| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* ABI compatibility redirects for clock_* symbols in librt. |
| 2 | Copyright (C) 2012-2015 Free Software Foundation, Inc. |
| 3 | This file is part of the GNU C Library. |
| 4 | |
| 5 | The GNU C Library is free software; you can redistribute it and/or |
| 6 | modify it under the terms of the GNU Lesser General Public |
| 7 | License as published by the Free Software Foundation; either |
| 8 | version 2.1 of the License, or (at your option) any later version. |
| 9 | |
| 10 | The GNU C Library is distributed in the hope that it will be useful, |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 13 | Lesser General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU Lesser General Public |
| 16 | License along with the GNU C Library; if not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 18 | |
| 19 | #include <shlib-compat.h> |
| 20 | |
| 21 | /* The clock_* symbols were originally defined in librt and so |
| 22 | are part of its ABI. As of 2.17, they have moved to libc. |
| 23 | So we supply definitions for librt that just redirect to |
| 24 | their libc counterparts. */ |
| 25 | |
| 26 | #if SHLIB_COMPAT (librt, GLIBC_2_2, GLIBC_2_17) |
| 27 | |
| 28 | #include <time.h> |
| 29 | |
| 30 | #if HAVE_IFUNC |
| 31 | # define COMPAT_REDIRECT(name, proto, arglist) \ |
| 32 | __typeof (name) *name##_ifunc (void) asm (#name); \ |
| 33 | __typeof (name) *name##_ifunc (void) \ |
| 34 | { \ |
| 35 | return &__##name; \ |
| 36 | } \ |
| 37 | asm (".type " #name ", %gnu_indirect_function"); |
| 38 | #else |
| 39 | # define COMPAT_REDIRECT(name, proto, arglist) \ |
| 40 | int \ |
| 41 | name proto \ |
| 42 | { \ |
| 43 | return __##name arglist; \ |
| 44 | } |
| 45 | #endif |
| 46 | |
| 47 | COMPAT_REDIRECT (clock_getres, |
| 48 | (clockid_t clock_id, struct timespec *res), |
| 49 | (clock_id, res)) |
| 50 | COMPAT_REDIRECT (clock_gettime, |
| 51 | (clockid_t clock_id, struct timespec *tp), |
| 52 | (clock_id, tp)) |
| 53 | COMPAT_REDIRECT (clock_settime, |
| 54 | (clockid_t clock_id, const struct timespec *tp), |
| 55 | (clock_id, tp)) |
| 56 | COMPAT_REDIRECT (clock_getcpuclockid, |
| 57 | (pid_t pid, clockid_t *clock_id), |
| 58 | (pid, clock_id)) |
| 59 | COMPAT_REDIRECT (clock_nanosleep, |
| 60 | (clockid_t clock_id, int flags, |
| 61 | const struct timespec *req, |
| 62 | struct timespec *rem), |
| 63 | (clock_id, flags, req, rem)) |
| 64 | |
| 65 | #endif |