2015-01-12 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
+ Stefani Seibold <stefani@seibold.net>
+
+ * sysdeps/unix/sysv/linux/x86_64/Makefile [$(subdir) = elf]
+ (sysdep_routines): Add dl-vdso here, ...
+ * sysdeps/unix/sysv/linux/x86/Makefile [$(subdir) = elf]
+ (sysdep_routines): ... not here.
+ * sysdeps/unix/sysv/linux/i386/gettimeofday.c: New file: set syscall
+ fallback when vDSO is not presented.
+ * sysdeps/unix/sysv/linux/x86_64/init-first.c (__vdso_clock_gettime):
+ Define with libc_hidden_proto/libc_hidden_data_def definitions.
+ (_libc_vdso_platform_setup): Rename to __vdso_platform_setup.
+ * sysdeps/unix/sysv/linux/i386/init-first.c: New file: likewise.
+ * sysdeps/unix/sysv/linux/i386/time.c: New file: likewise.
+ * sysdeps/unix/sysv/linux/x86_64/bits/libc-vdso.h: Moved to ...
+ * sysdeps/unix/sysv/linux/x86/libc-vdso.h: ... here.
+ * sysdeps/unix/sysv/linux/x86_64/clock_gettime.c: Move to ...
+ * sysdeps/unix/sysv/linux/x86/clock_gettime.c: ... here.
+ * sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Move to ...
+ * sysdeps/unix/sysv/linux/x86/gettimeofday.c: ... here. Also added
+ fallback configurable symbol when vDSO is not available.
+ * sysdeps/unix/sysv/linux/x86_64/time.c: Move to ...
+ * sysdeps/unix/sysv/linux/x86/time.c: ... here. Also refactored to
+ be able to redefine fallback symbol when vDSO is not available.
+ * sysdeps/unix/sysv/linux/x86_64/timespec_get.c: Move to ...
+ * sysdeps/unix/sysv/linux/x86/timespec_get.c: ... here.
+
+2015-01-12 Adhemerval Zanella <azanella@linux.vnet.ibm.com>
* sysdeps/powerpc/nptl/tls.h (tcbhead_t): Add tm_capable field.
(TLS_INIT_TP): Add tm_capable initialization.
--- /dev/null
+/* gettimeofday - get the time. Linux/i386 version.
+ 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/>. */
+
+#include <sys/time.h>
+
+#ifdef SHARED
+
+# include <dl-vdso.h>
+# include <errno.h>
+
+/* If the vDSO is not available we fall back on the syscall. */
+static int
+__gettimeofday_syscall (struct timeval *tv, struct timezone *tz)
+{
+ return INLINE_SYSCALL (gettimeofday, 2, tv, tz);
+}
+# define GETTIMEOFAY_FALLBACK (void*) (&__gettimeofday_syscall)
+# undef libc_ifunc_hidden_def
+# define libc_ifunc_hidden_def(name) \
+ libc_ifunc_hidden_def1 (__GI_##name, __gettimeofday_syscall)
+
+#endif
+
+#include <sysdeps/unix/sysv/linux/x86/gettimeofday.c>
--- /dev/null
+/* Initialization code run first thing by the ELF startup code. Linux/i386.
+ 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/>. */
+
+#ifdef SHARED
+# include <time.h>
+# include <sysdep.h>
+# include <dl-vdso.h>
+# include <libc-vdso.h>
+
+long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
+ __attribute__ ((nocommon));
+libc_hidden_proto (__vdso_clock_gettime)
+libc_hidden_data_def (__vdso_clock_gettime)
+
+static long int
+clock_gettime_syscall (clockid_t id, struct timespec *tp)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ return INTERNAL_SYSCALL (clock_gettime, err, 2, id, tp);
+}
+
+static inline void
+__vdso_platform_setup (void)
+{
+ PREPARE_VERSION_KNOWN (linux26, LINUX_2_6);
+
+ void *p = _dl_vdso_vsym ("__vdso_clock_gettime", &linux26);
+ if (p == NULL)
+ p = clock_gettime_syscall;
+ PTR_MANGLE (p);
+ __vdso_clock_gettime = p;
+}
+
+# define VDSO_SETUP __vdso_platform_setup
+#endif
+
+#include <csu/init-first.c>
--- /dev/null
+/* time -- Get number of seconds since Epoch. Linux/i386 version.
+ 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/>. */
+
+#ifdef SHARED
+
+# include <dl-vdso.h>
+# include <errno.h>
+
+/* If the vDSO is not available we fall back on the old vsyscall. */
+static time_t
+__time_syscall (time_t *t)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ return INTERNAL_SYSCALL (time, err, 1, t);
+}
+# define TIME_FALLBACK (void*) &__time_syscall
+# undef libc_ifunc_hidden_def
+# define libc_ifunc_hidden_def(name) \
+ libc_ifunc_hidden_def1 (__GI_##name, __time_syscall)
+#endif
+
+#include <sysdeps/unix/sysv/linux/x86/time.c>
libpthread-sysdep_routines += elision-lock elision-unlock elision-timed \
elision-trylock
endif
+
+ifeq ($(subdir),elf)
+sysdep_routines += dl-vdso
+endif
--- /dev/null
+/* Get the current value of a clock. Linux/x86 version.
+ 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/>. */
+
+#include <libc-vdso.h>
+
+#ifdef SHARED
+# define SYSCALL_GETTIME(id, tp) \
+ ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
+ long int v_ret; \
+ PTR_DEMANGLE (f); \
+ v_ret = (*f) (id, tp); \
+ if (INTERNAL_SYSCALL_ERROR_P (v_ret, )) { \
+ __set_errno (INTERNAL_SYSCALL_ERRNO (v_ret, )); \
+ v_ret = -1; \
+ } \
+ v_ret; })
+#endif
+
+#include <sysdeps/unix/sysv/linux/clock_gettime.c>
--- /dev/null
+/* gettimeofday - get the time. Linux/x86 version.
+ 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/>. */
+
+#include <sys/time.h>
+
+#ifdef SHARED
+
+# include <dl-vdso.h>
+
+void *gettimeofday_ifunc (void) __asm__ ("__gettimeofday");
+
+void *
+gettimeofday_ifunc (void)
+{
+ PREPARE_VERSION_KNOWN (linux26, LINUX_2_6);
+
+ /* If the vDSO is not available we fall back on the old vsyscall. */
+ return (_dl_vdso_vsym ("__vdso_gettimeofday", &linux26)
+ ?: GETTIMEOFAY_FALLBACK);
+}
+asm (".type __gettimeofday, %gnu_indirect_function");
+
+libc_ifunc_hidden_def(__gettimeofday)
+
+#else
+
+# include <sysdep.h>
+# include <errno.h>
+
+int
+__gettimeofday (struct timeval *tv, struct timezone *tz)
+{
+ return INLINE_SYSCALL (gettimeofday, 2, tv, tz);
+}
+libc_hidden_def (__gettimeofday)
+
+#endif
+weak_alias (__gettimeofday, gettimeofday)
+libc_hidden_weak (gettimeofday)
--- /dev/null
+/* time -- Get number of seconds since Epoch. Linux/x86 version.
+ 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/>. */
+
+#include <time.h>
+
+#ifdef SHARED
+
+#include <dl-vdso.h>
+
+void *time_ifunc (void) __asm__ ("time");
+
+void *
+time_ifunc (void)
+{
+ PREPARE_VERSION_KNOWN (linux26, LINUX_2_6);
+
+ return _dl_vdso_vsym ("__vdso_time", &linux26) ?: TIME_FALLBACK;
+}
+asm (".type time, %gnu_indirect_function");
+
+libc_ifunc_hidden_def(time)
+
+#else
+
+# include <sysdep.h>
+
+time_t
+time (time_t *t)
+{
+ INTERNAL_SYSCALL_DECL (err);
+ return INTERNAL_SYSCALL (time, err, 1, t);
+}
+
+#endif
--- /dev/null
+/* timespec_get -- returns the calendar time based on a given time base.
+ Linux/x86 version.
+ 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/>. */
+
+#include <libc-vdso.h>
+
+#ifdef SHARED
+# define INTERNAL_GETTIME(id, tp) \
+ ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
+ PTR_DEMANGLE (f); \
+ (*f) (id, tp); })
+#endif
+
+#include <sysdeps/unix/sysv/linux/timespec_get.c>
ifeq ($(subdir),misc)
gen-as-const-headers += sigaltstack-offsets.sym
endif
-
-ifeq ($(subdir),elf)
-sysdep_routines += dl-vdso
-endif
+++ /dev/null
-#include "bits/libc-vdso.h"
-
-#ifdef SHARED
-# define SYSCALL_GETTIME(id, tp) \
- ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
- long int v_ret; \
- PTR_DEMANGLE (f); \
- v_ret = f (id, tp); \
- if (INTERNAL_SYSCALL_ERROR_P (v_ret, )) { \
- __set_errno (INTERNAL_SYSCALL_ERRNO (v_ret, )); \
- v_ret = -1; \
- } \
- v_ret; })
-# define INTERNAL_GETTIME(id, tp) \
- ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
- PTR_DEMANGLE (f); \
- f (id, tp); })
-#endif
-
-#include "../clock_gettime.c"
#include <sys/time.h>
#ifdef SHARED
-
-# include <dl-vdso.h>
-
+/* If the vDSO is not available we fall back on the old vsyscall. */
# define VSYSCALL_ADDR_vgettimeofday 0xffffffffff600000ul
-
-void *gettimeofday_ifunc (void) __asm__ ("__gettimeofday");
-
-void *
-gettimeofday_ifunc (void)
-{
- PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
-
- /* If the vDSO is not available we fall back on the old vsyscall. */
- return (_dl_vdso_vsym ("__vdso_gettimeofday", &linux26)
- ?: (void *) VSYSCALL_ADDR_vgettimeofday);
-}
-asm (".type __gettimeofday, %gnu_indirect_function");
-
-/* This is doing "libc_hidden_def (__gettimeofday)" but the compiler won't
- let us do it in C because it doesn't know we're defining __gettimeofday
- here in this file. */
-asm (".globl __GI___gettimeofday\n"
- "__GI___gettimeofday = __gettimeofday");
-
-#else
-
-# include <sysdep.h>
-# include <errno.h>
-
-int
-__gettimeofday (struct timeval *tv, struct timezone *tz)
-{
- return INLINE_SYSCALL (gettimeofday, 2, tv, tz);
-}
-libc_hidden_def (__gettimeofday)
-
+# define GETTIMEOFAY_FALLBACK (void*)VSYSCALL_ADDR_vgettimeofday
#endif
-weak_alias (__gettimeofday, gettimeofday)
-libc_hidden_weak (gettimeofday)
+
+#include <sysdeps/unix/sysv/linux/x86/gettimeofday.c>
# include <time.h>
# include <sysdep.h>
# include <dl-vdso.h>
-# include <bits/libc-vdso.h>
+# include <libc-vdso.h>
long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
__attribute__ ((nocommon));
-strong_alias (__vdso_clock_gettime, __GI___vdso_clock_gettime attribute_hidden)
+libc_hidden_proto (__vdso_clock_gettime)
+libc_hidden_data_def (__vdso_clock_gettime)
long int (*__vdso_getcpu) (unsigned *, unsigned *, void *) attribute_hidden;
-
extern long int __syscall_clock_gettime (clockid_t, struct timespec *);
static inline void
-_libc_vdso_platform_setup (void)
+__vdso_platform_setup (void)
{
PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
if (p == NULL)
p = __syscall_clock_gettime;
PTR_MANGLE (p);
- __GI___vdso_clock_gettime = p;
+ __vdso_clock_gettime = p;
p = _dl_vdso_vsym ("__vdso_getcpu", &linux26);
/* If the vDSO is not available we fall back on the old vsyscall. */
__vdso_getcpu = p;
}
-# define VDSO_SETUP _libc_vdso_platform_setup
+# define VDSO_SETUP __vdso_platform_setup
#endif
#include <csu/init-first.c>
<http://www.gnu.org/licenses/>. */
#ifdef SHARED
-/* Redefine time so that the compiler won't complain about the type
- mismatch with the IFUNC selector in strong_alias, below. */
-#undef time
-#define time __redirect_time
-#include <time.h>
-
-#include <dl-vdso.h>
-
+/* If the vDSO is not available we fall back on the old vsyscall. */
#define VSYSCALL_ADDR_vtime 0xffffffffff600400
-
-/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
- ifunc symbol properly. */
-extern __typeof (__redirect_time) __libc_time;
-void *time_ifunc (void) __asm__ ("__libc_time");
-
-void *
-time_ifunc (void)
-{
- PREPARE_VERSION (linux26, "LINUX_2.6", 61765110);
-
- /* If the vDSO is not available we fall back on the old vsyscall. */
- return _dl_vdso_vsym ("__vdso_time", &linux26) ?: (void *) VSYSCALL_ADDR_vtime;
-}
-__asm (".type __libc_time, %gnu_indirect_function");
-
-#undef time
-strong_alias (__libc_time, time)
-libc_hidden_ver (__libc_time, time)
-
-#else
-
-# include <time.h>
-# include <sysdep.h>
-
-time_t
-time (time_t *t)
-{
- INTERNAL_SYSCALL_DECL (err);
- return INTERNAL_SYSCALL (time, err, 1, t);
-}
-
+#define TIME_FALLBACK (void*)VSYSCALL_ADDR_vtime
#endif
+
+#include <sysdeps/unix/sysv/linux/x86/time.c>
+++ /dev/null
-#include "bits/libc-vdso.h"
-
-#ifdef SHARED
-# define INTERNAL_GETTIME(id, tp) \
- ({ long int (*f) (clockid_t, struct timespec *) = __vdso_clock_gettime; \
- PTR_DEMANGLE (f); \
- f (id, tp); })
-#endif
-
-#include "../timespec_get.c"
#ifdef SHARED
# include <dl-vdso.h>
-# include <bits/libc-vdso.h>
+# include <libc-vdso.h>
long int (*__vdso_clock_gettime) (clockid_t, struct timespec *)
__attribute__ ((nocommon));
projects / platform / upstream / glibc.git / commitdiff