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glibc/sysdeps/unix/sysv/linux/x86_64
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Adhemerval Zanella 7cbeabac0f x86: Remove vsyscall usage 
This patch removes the vsyscall usage for x86_64 port.  As indicated
by kernel code comments [1], vsyscalls are a legacy ABI and its concept
is problematic:

- It interferes with ASLR.
- It's awkward to write code that lives in kernel addresses but is
  callable by userspace at fixed addresses.
- The whole concept is impossible for 32-bit compat userspace.
- UML cannot easily virtualize a vsyscall.

The VDSO is a better approach for such functionality.  Tested on i686,
x86_64, and x32.

	* sysdeps/unix/sysv/linux/i386/gettimeofday.c
	(__gettimeofday_syscall): Remove vsyscall fallback.
	* sysdeps/unix/sysv/linux/i386/time.c (__time_syscall): Likewise.
	* sysdeps/unix/sysv/linux/x86/gettimeofday.c (__gettimeofday_syscall):
	Add syscall fallback function.
	(gettimeofday_ifunc): Use __gettimeofday_syscall as fallback mechanism
	if vDSO is not present.
	* sysdeps/unix/sysv/linux/x86/time.c (__time_syscall): Add syscall
	fallback function.
	(time_ifunc): Use __time_syscall as fallback mechanism if vDSO is not
	present.
	* sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Remove file.
	* sysdeps/unix/sysv/linux/x86_64/time.c: Likewise.

[1] arch/x86/kernel/vsyscall_64.c
 		2015-06-09 18:10:19 -03:00
..
64 Remove shlib-versions entries redundant with DEFAULT entries. 2014-09-26 17:34:22 +00:00
x32 Consolidate sched_getcpu 2015-06-09 14:56:21 -03:00
Implies
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Makefile Add x86 32 bit vDSO time function support 2015-01-12 16:03:58 -02:00
Versions x86: Clean up __vdso_clock_gettime variable. 2015-02-06 10:44:11 -08:00
____longjmp_chk.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
__start_context.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
arch-fork.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
brk.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
cancellation.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
clone.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
compat-timer.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
configure
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configure.ac
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dl-cache.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
dl-procinfo.c Remove IS_IN_ldconfig 2014-11-24 11:41:43 +05:30
dl-procinfo.h Remove IS_IN_ldconfig 2014-11-24 11:41:43 +05:30
get_clockfreq.c
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getcontext.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
init-first.c Consolidate sched_getcpu 2015-06-09 14:56:21 -03:00
kernel-features.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
kernel_stat.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ldconfig.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ldd-rewrite.sed
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libc-cancellation.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
libc-lowlevellock.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
libmvec.abilist Vector cosf for x86_64. 2015-06-09 18:29:47 +03:00
librt-cancellation.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
lll_timedlock_wait.c Split timed-wait functions out of nptl/lowlevellock.c. 2015-05-26 14:49:13 -07:00
lll_timedwait_tid.c Split timed-wait functions out of nptl/lowlevellock.c. 2015-05-26 14:49:13 -07:00
lowlevellock.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
lowlevellock.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
lowlevelrobustlock.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
makecontext.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
profil-counter.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_barrier_wait.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_cond_broadcast.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_cond_signal.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_cond_timedwait.S x86: Clean up __vdso_clock_gettime variable. 2015-02-06 10:44:11 -08:00
pthread_cond_wait.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
pthread_setaffinity.c
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readelflib.c
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recv.c nptl: Rewrite cancellation macros 2015-06-04 18:58:36 -03:00
register-dump.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sched_setaffinity.c
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send.c nptl: Rewrite cancellation macros 2015-06-04 18:58:36 -03:00
setcontext.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sigaction.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sigaltstack-offsets.sym
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sigcontextinfo.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sigpending.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sigprocmask.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
swapcontext.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
syscall.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
syscalls.list
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sysconf.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sysdep-cancel.h Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sysdep.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
sysdep.h Consolidate sched_getcpu 2015-06-09 14:56:21 -03:00
timer_create.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
timer_delete.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
timer_getoverr.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
timer_gettime.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
timer_settime.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
ucontext_i.sym
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umount.c Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00
vfork.S Update copyright dates with scripts/update-copyrights. 2015-01-02 16:29:47 +00:00