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glibc/sysdeps/unix/sysv/linux/i386
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Adhemerval Zanella b8a7c7da4e Refactor vDSO initialization code 
Linux vDSO initialization code the internal function pointers require a
lot of duplicated boilerplate over different architectures.  This patch
aims to simplify not only the code but the required definition to enable
a vDSO symbol.

The changes are:

  1. Consolidate all init-first.c on only one implementation and enable
     the symbol based on HAVE_*_VSYSCALL existence.

  2. Set the HAVE_*_VSYSCALL to the architecture expected names string.

  3. Add a new internal implementation, get_vdso_mangle_symbol, which
     returns a mangled function pointer.

Currently the clock_gettime, clock_getres, gettimeofday, getcpu, and time
are handled in an arch-independent way, powerpc still uses some
arch-specific vDSO symbol handled in a specific init-first implementation.

Checked on aarch64-linux-gnu, arm-linux-gnueabihf, i386-linux-gnu,
mips64-linux-gnu, powerpc64le-linux-gnu, s390x-linux-gnu,
sparc64-linux-gnu, and x86_64-linux-gnu.

	* sysdeps/powerpc/powerpc32/backtrace.c (is_sigtramp_address,
	is_sigtramp_address_rt): Use HAVE_SIGTRAMP_{RT}32 instead of SHARED.
	* sysdeps/powerpc/powerpc64/backtrace.c (is_sigtramp_address):
	Likewise.
	* sysdeps/unix/sysv/linux/aarch64/init-first.c: Remove file.
	* sysdeps/unix/sysv/linux/aarch64/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/mips/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/i386/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/s390/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/sparc/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/x86/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/init-first.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sysdep.h
	(HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETTIMEOFDAY_VSYSCALL): Define value based on kernel exported
	name.
	* sysdeps/unix/sysv/linux/arm/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/i386/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/mips/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/powerpc/sysdep.h
	(HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETCPU_VSYSCALL, HAVE_TIME_VSYSCALL, HAVE_GET_TBFREQ,
	HAVE_SIGTRAMP_RT64, HAVE_SIGTRAMP_32, HAVE_SIGTRAMP_RT32i,
	HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/riscv/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL,
	HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
	HAVE_GETCPU_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/s390/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL,
	HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
	HAVE_GETCPU_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/sparc/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL,
	HAVE_GETTIMEOFDAY_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sysdep.h
	(HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL,
	HAVE_GETCPU_VSYSCALL): Likewise.
	* sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME, VDSO_HASH): Define to
	invalid names if architecture does not define them.
	(get_vdso_mangle_symbol): New symbol.
	* sysdeps/unix/sysv/linux/init-first.c: New file.
	* sysdeps/unix/sysv/linux/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/init-first.c (gettimeofday,
	clock_gettime, clock_getres, getcpu, time): Remove declaration.
	(__libc_vdso_platform_setup_arch): Likewise and use
	get_vdso_mangle_symbol to setup vDSO symbols.
	(sigtramp_rt64, sigtramp32, sigtramp_rt32, get_tbfreq): Add
	attribute_hidden.
	* sysdeps/unix/sysv/linux/powerpc/libc-vdso.h: Likewise.
	* sysdeps/unix/sysv/linux/sysdep-vdso.h (VDSO_SYMBOL): Remove
	definition.
2019-09-17 17:09:24 -03:00
..
i686 Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
i786 Move remaining nptl/sysdeps/unix/sysv/linux/i386/ files. 2014-05-14 13:37:40 -07:00
____longjmp_chk.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
_exit.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
brk.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
c++-types.data x86: Move abilist files out of nptl/ subdirectories. 2014-05-14 15:45:23 -07:00
clone.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
configure Require Linux kernel 3.2 or later on x86 / x86_64. 2017-05-08 10:45:20 +00:00
configure.ac Require Linux kernel 3.2 or later on x86 / x86_64. 2017-05-08 10:45:20 +00:00
dl-librecon.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
dl-procinfo.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
dl-sysdep.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
fxstat.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
fxstatat.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
getcontext.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
gettimeofday.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
Implies NPTL is no longer an add-on! 2014-07-07 09:29:06 -07:00
jmp_buf-macros.h Add jmp_buf-macros.h 2017-11-09 05:10:03 -08:00
kernel-features.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
ld.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
ldconfig.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
libanl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libBrokenLocale.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libc-do-syscall.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
libc.abilist Finish move of clock_* functions to libc. [BZ #24959] 2019-09-04 14:39:38 +02:00
libcrypt.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libdl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libm.abilist Make totalorder and totalordermag functions take pointer arguments. 2019-08-15 15:18:34 +00:00
libnsl.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libpthread.abilist nptl: Move pthread_attr_getinheritsched implementation into libc 2019-08-30 07:33:02 +02:00
libresolv.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
librt.abilist Finish move of clock_* functions to libc. [BZ #24959] 2019-09-04 14:39:38 +02:00
libthread_db.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
libutil.abilist Ignore absolute symbols in ABI tests. 2018-05-04 15:46:32 +00:00
localplt.data ld.so: Introduce struct dl_exception 2017-08-10 16:54:57 +02:00
lxstat.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
makecontext.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
Makefile i386: Fix i386 sigaction sa_restorer initialization (BZ#21269) 2018-03-05 18:08:27 -03:00
readelflib.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
register-dump.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
setcontext.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
shlib-versions Clean up gnu/lib-names.h generation (bug 14171). 2014-09-26 17:33:04 +00:00
sigaction.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
sigcontextinfo.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
smp.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
startup.h Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
swapcontext.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
syscall.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
syscalls.list posix: Consolidate Linux waitpid syscall 2017-05-18 18:06:47 -03:00
sysdep.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
sysdep.h Refactor vDSO initialization code 2019-09-17 17:09:24 -03:00
time.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
tst-bz21269.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
ucontext_i.sym * sysdeps/unix/sysv/linux/i386/ucontext_i.h: File removed. 2005-12-22 05:18:34 +00:00
Versions Clean pthread functions namespaces for C11 threads 2017-06-23 17:38:17 -03:00
vfork.S Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
xstat.c Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00