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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/unix/sysv/linux/sysdep-vdso.h
1 /* vDSO common definition for Linux.
2 Copyright (C) 2015-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
19 #ifndef SYSDEP_VDSO_LINUX_H
20 # define SYSDEP_VDSO_LINUX_H
22 #define VDSO_SYMBOL(__name) __vdso_##__name
24 #ifndef INTERNAL_VSYSCALL_CALL
25 # define INTERNAL_VSYSCALL_CALL(funcptr, err, nr, args...) \
29 #if USE_VSYSCALL && defined HAVE_VSYSCALL
31 # include <libc-vdso.h>
33 # define INLINE_VSYSCALL(name, nr, args...) \
37 INTERNAL_SYSCALL_DECL (sc_err); \
40 __typeof (__vdso_##name) vdsop = __vdso_##name; \
41 PTR_DEMANGLE (vdsop); \
44 sc_ret = INTERNAL_VSYSCALL_CALL (vdsop, sc_err, nr, ##args); \
45 if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
47 if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \
51 sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \
52 if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
55 __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
62 # define INTERNAL_VSYSCALL(name, err, nr, args...) \
67 __typeof (__vdso_##name) vdsop = __vdso_##name; \
68 PTR_DEMANGLE (vdsop); \
71 v_ret = INTERNAL_VSYSCALL_CALL (vdsop, err, nr, ##args); \
72 if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \
73 || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \
76 v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \
82 # define INLINE_VSYSCALL(name, nr, args...) \
83 INLINE_SYSCALL (name, nr, ##args)
84 # define INTERNAL_VSYSCALL(name, err, nr, args...) \
85 INTERNAL_SYSCALL (name, err, nr, ##args)
87 #endif /* USE_VSYSCALL && defined HAVE_VSYSCALL */
89 #endif /* SYSDEP_VDSO_LINUX_H */