git://sourceware.org / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f534255e | 1 | /* vDSO common definition for Linux. |
| d614a753 | 2 | Copyright (C) 2015-2020 Free Software Foundation, Inc. |
| f534255e AZ |
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 | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| f534255e AZ |
18 | |
| 19 | #ifndef SYSDEP_VDSO_LINUX_H | |
| 20 | # define SYSDEP_VDSO_LINUX_H | |
| 21 | ||
| 1bdda52f | 22 | #include <ldsodefs.h> |
| f534255e AZ |
23 | |
| 24 | #ifndef INTERNAL_VSYSCALL_CALL | |
| 25 | # define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \ | |
| 26 | funcptr (args) | |
| 27 | #endif | |
| 28 | ||
| d0def09f | 29 | #define INLINE_VSYSCALL(name, nr, args...) \ |
| f534255e AZ |
30 | ({ \ |
| 31 | __label__ out; \ | |
| 32 | __label__ iserr; \ | |
| 33 | INTERNAL_SYSCALL_DECL (sc_err); \ | |
| 34 | long int sc_ret; \ | |
| 35 | \ | |
| 1bdda52f | 36 | __typeof (GLRO(dl_vdso_##name)) vdsop = GLRO(dl_vdso_##name); \ |
| f534255e AZ |
37 | if (vdsop != NULL) \ |
| 38 | { \ | |
| 39 | sc_ret = INTERNAL_VSYSCALL_CALL (vdsop, sc_err, nr, ##args); \ | |
| 40 | if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ | |
| 41 | goto out; \ | |
| 42 | if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \ | |
| 43 | goto iserr; \ | |
| 44 | } \ | |
| 45 | \ | |
| 46 | sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \ | |
| 47 | if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ | |
| 48 | { \ | |
| 49 | iserr: \ | |
| 50 | __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \ | |
| 51 | sc_ret = -1L; \ | |
| 52 | } \ | |
| 53 | out: \ | |
| 54 | sc_ret; \ | |
| 55 | }) | |
| 56 | ||
| f534255e | 57 | #endif /* SYSDEP_VDSO_LINUX_H */ |