diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/x86/sysdep.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/x86/sysdep.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/x86/sysdep.h b/sysdeps/unix/sysv/linux/x86/sysdep.h new file mode 100644 index 0000000000..fc31f2a05e --- /dev/null +++ b/sysdeps/unix/sysv/linux/x86/sysdep.h @@ -0,0 +1,80 @@ +/* Common sysdep definitions for x86/Linux. + Copyright (C) 2015 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, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _LINUX_X86_SYSDEP_H +#define _LINUX_X86_SYSDEP_H + +#ifdef SHARED +# define INLINE_VSYSCALL(name, nr, args...) \ + ({ \ + __label__ out; \ + __label__ iserr; \ + INTERNAL_SYSCALL_DECL (sc_err); \ + long int sc_ret; \ + \ + __typeof (__vdso_##name) vdsop = __vdso_##name; \ + PTR_DEMANGLE (vdsop); \ + if (vdsop != NULL) \ + { \ + sc_ret = vdsop (args); \ + if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + goto out; \ + if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \ + goto iserr; \ + } \ + \ + sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \ + if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \ + { \ + iserr: \ + __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \ + sc_ret = -1L; \ + } \ + out: \ + sc_ret; \ + }) +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + ({ \ + __label__ out; \ + long int v_ret; \ + \ + __typeof (__vdso_##name) vdsop = __vdso_##name; \ + PTR_DEMANGLE (vdsop); \ + if (vdsop != NULL) \ + { \ + v_ret = vdsop (args); \ + if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \ + || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \ + goto out; \ + } \ + v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \ + out: \ + v_ret; \ + }) + +#else +# define INLINE_VSYSCALL(name, nr, args...) \ + INLINE_SYSCALL (name, nr, ##args) +# define INTERNAL_VSYSCALL(name, err, nr, args...) \ + INTERNAL_SYSCALL (name, err, nr, ##args) +#endif + +/* List of system calls which are supported as vsyscalls. */ +# define HAVE_CLOCK_GETTIME_VSYSCALL 1 + +#endif |