Commit Graph

202 Commits

Author SHA1 Message Date
Siddhesh Poyarekar a38484851a Remove IS_IN_rtld
Replace with IS_IN (rtld).  Generated code is unchanged on
x86_64.

        * elf/Makefile (CPPFLAGS-.os): Remove IS_IN_rtld.
        * elf/dl-open.c: Use IS_IN (rtld) instead if IS_IN_rtld.
        * elf/rtld-Rules: Likewise.
        * elf/setup-vdso.h: Likewise.
        * include/assert.h: Likewise.
        * include/bits/stdlib-float.h: Likewise.
        * include/errno.h: Likewise.
        * include/sys/stat.h: Likewise.
        * include/unistd.h: Likewise.
        * sysdeps/aarch64/setjmp.S: Likewise.
        * sysdeps/alpha/setjmp.S: Likewise.
        * sysdeps/arm/__longjmp.S: Likewise.
        * sysdeps/arm/aeabi_unwind_cpp_pr1.c: Likewise.
        * sysdeps/arm/setjmp.S: Likewise.
        * sysdeps/arm/sysdep.h: Likewise.
        * sysdeps/generic/_itoa.h: Likewise.
        * sysdeps/generic/dl-sysdep.h: Likewise.
        * sysdeps/generic/ldsodefs.h: Likewise.
        * sysdeps/i386/dl-tls.h: Likewise.
        * sysdeps/i386/setjmp.S: Likewise.
        * sysdeps/m68k/setjmp.c: Likewise.
        * sysdeps/mach/hurd/dl-execstack.c: Likewise.
        * sysdeps/mach/hurd/opendir.c: Likewise.
        * sysdeps/posix/getcwd.c: Likewise.
        * sysdeps/posix/opendir.c: Likewise.
        * sysdeps/posix/profil.c: Likewise.
        * sysdeps/powerpc/dl-procinfo.h: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/fpu/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc32/power4/multiarch/init-arch.h: Likewise.
        * sysdeps/powerpc/powerpc32/setjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/__longjmp-common.S: Likewise.
        * sysdeps/powerpc/powerpc64/setjmp-common.S: Likewise.
        * sysdeps/s390/dl-tls.h: Likewise.
        * sysdeps/s390/s390-32/setjmp.S: Likewise.
        * sysdeps/s390/s390-64/setjmp.S: Likewise.
        * sysdeps/sh/sh3/setjmp.S: Likewise.
        * sysdeps/sh/sh4/setjmp.S: Likewise.
        * sysdeps/unix/alpha/sysdep.h: Likewise.
        * sysdeps/unix/arm/sysdep.S: Likewise.
        * sysdeps/unix/i386/sysdep.S: Likewise.
        * sysdeps/unix/sysv/linux/aarch64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/getcwd.c: Likewise.
        * sysdeps/unix/sysv/linux/hppa/nptl/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/i386/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/ia64/setjmp.S: Likewise.
        * sysdeps/unix/sysv/linux/ia64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/lowlevellock-futex.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/bits/m68k-vdso.h: Likewise.
        * sysdeps/unix/sysv/linux/m68k/m68k-helpers.S: Likewise.
        * sysdeps/unix/sysv/linux/microblaze/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sh/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc32/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/sparc/sparc64/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/tile/sysdep.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Likewise.
        * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Likewise.
        * sysdeps/unix/x86_64/sysdep.S: Likewise.
        * sysdeps/x86_64/setjmp.S: Likewise.
2014-11-24 11:41:48 +05:30
Joseph Myers 9cf27b8d09 Remove INTDEF / INTUSE / INTVARDEF (bug 14132).
Completing the removal of the obsolete INTDEF / INTUSE mechanism, this
patch removes the final use - that for _dl_starting_up - replacing it
by rtld_hidden_def / rtld_hidden_proto.  Having removed the last use,
the mechanism itself is also removed.

Tested for x86_64 that installed stripped shared libraries are
unchanged by the patch.  (This is not much of a test since this
variable is only defined and used in the !HAVE_INLINED_SYSCALLS case.)

	[BZ #14132]
	* include/libc-symbols.h (INTUSE): Remove macro.
	(INTDEF): Likewise.
	(INTVARDEF): Likewise.
	(_INTVARDEF): Likewise.
	(INTDEF2): Likewise.
	(INTVARDEF2): Likewise.
	* elf/rtld.c [!HAVE_INLINED_SYSCALLS] (_dl_starting_up): Use
	rtld_hidden_def instead of INTVARDEF.
	* sysdeps/generic/ldsodefs.h [IS_IN_rtld]
	(_dl_starting_up_internal): Remove declaration.
	(_dl_starting_up): Use rtld_hidden_proto.
	* elf/dl-init.c [!HAVE_INLINED_SYSCALLS] (_dl_starting_up): Remove
	declaration.
	[!HAVE_INLINED_SYSCALLS] (_dl_starting_up_internal): Likewise.
	(_dl_init) [!HAVE_INLINED_SYSCALLS]: Don't use INTUSE with
	_dl_starting_up.
	* elf/dl-writev.h (_dl_writev): Likewise.
	* sysdeps/powerpc/powerpc64/dl-machine.h [!HAVE_INLINED_SYSCALLS]
	(DL_STARTING_UP_DEF): Use __GI__dl_starting_up instead of
	_dl_starting_up_internal.
2014-11-05 23:35:36 +00:00
Joseph Myers ab97ee8f1b Don't use INTDEF/INTUSE with _dl_mcount (bug 14132).
Continuing the removal of the obsolete INTDEF / INTUSE mechanism, this
patch replaces its use for _dl_mcount with use of rtld_hidden_def /
rtld_hidden_proto.

Tested for x86_64 that installed stripped shared libraries are
unchanged by the patch.

	[BZ #14132]
	* elf/dl-profile.c (_dl_mcount): Use rtld_hidden_def instead of
	INTDEF.
	* sysdeps/generic/ldsodefs.h (_dl_mcount_internal): Remove
	declaration.
	(_dl_mcount): Use rtld_hidden_proto.
	* elf/dl-runtime.c (_dl_profile_fixup): Don't use INTUSE with
	_dl_mcount.
	* elf/rtld.c (_rtld_global_ro): Likewise.
2014-11-05 01:02:47 +00:00
Joseph Myers 4243cbea6d Don't use INTDEF/INTUSE with _dl_argv (bug 14132).
Continuing the removal of the obsolete INTDEF / INTUSE mechanism, this
patch replaces its use for _dl_argv with rtld_hidden_data_def and
rtld_hidden_proto.  Some places in .S files that previously used
_dl_argv_internal or INTUSE(_dl_argv) now use __GI__dl_argv directly
(there are plenty of existing examples of such direct use of __GI_*).

A single place in rtld.c previously used _dl_argv without INTUSE,
apparently accidentally, while the rtld_hidden_proto mechanism avoids
such accidential omissions.  As a consequence, this patch *does*
change the contents of stripped ld.so.  However, the installed
stripped shared libraries are identical to those you get if instead of
this patch you change that single _dl_argv use to use INTUSE, without
any other changes.

Tested for x86_64 (testsuite as well as comparison of installed
stripped shared libraries as described above).

	[BZ #14132]
	* sysdeps/generic/ldsodefs.h (_dl_argv): Use rtld_hidden_proto.
	[IS_IN_rtld] (_dl_argv_internal): Do not declare.
	(rtld_progname): Make macro definition unconditional.
	* elf/rtld.c (_dl_argv): Use rtld_hidden_data_def instead of
	INTDEF.
	(dlmopen_doit): Do not use INTUSE with _dl_argv.
	(dl_main): Likewise.
	* elf/dl-sysdep.c (_dl_sysdep_start): Likewise.
	* sysdeps/alpha/dl-machine.h (RTLD_START): Use __GI__dl_argv
	instead of _dl_argv_internal.
	* sysdeps/powerpc/powerpc32/dl-start.S (_dl_start_user): Use
	__GI__dl_argv instead of INTUSE(_dl_argv).
	* sysdeps/powerpc/powerpc64/dl-machine.h (RTLD_START): Use
	__GI__dl_argv instead of _dl_argv_internal.
2014-11-04 17:39:39 +00:00
Richard Henderson 8c682bb22c Rely on HP_TIMING_AVAIL implies HP_SMALL_TIMING_AVAIL 2014-07-03 08:38:41 -07:00
Richard Henderson 428dd03f5a Remove HP_TIMING_DIFF_INIT and dl_hp_timing_overhead
Without HP_TIMING_ACCUM, dl_hp_timing_overhead is write-only.
If we remove it, there's no point in HP_TIMING_DIFF_INIT either.
2014-07-03 08:38:25 -07:00
Joseph Myers 11b076bbae Remove stray includes of kernel-features.h.
Now that files using __ASSUME_* macros have been made by
<https://sourceware.org/ml/libc-alpha/2014-06/msg00543.html> to
include <kernel-features.h> directly, any include from a file not
using __ASSUME_* macros can safely be removed (as there will no longer
be some other file relying on indirect inclusion via a header from
which the include is being removed).

This patch removes such unnecessary kernel-features.h includes.

Tested x86_64 that disassembly of installed shared libraries is
unchanged by this patch, except for line numbers in calls to
__assert_fail from libc.so and ld.so.

2014-06-23  Joseph Myers  <joseph@codesourcery.com>

	* nptl/createthread.c: Don't include kernel-features.h.
	* nptl/pthread_cancel.c: Likewise.
	* nptl/pthread_condattr_setclock.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pt-raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_getcpuclockid.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_kill.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/pthread_sigqueue.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/raise.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-32/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/pt-vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/s390/s390-64/vfork.S: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_create.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_delete.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_getoverr.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_gettime.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_routines.c: Likewise.
	* nptl/sysdeps/unix/sysv/linux/timer_settime.c: Likewise.
	* nscd/gai.c: Likewise.
	* nss/nss_db/db-open.c: Likewise.
	* sysdeps/generic/ldsodefs.h: Likewise.
	* sysdeps/sh/nptl/tls.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/adjtime.c: Likewise.
	* sysdeps/unix/sysv/linux/alpha/xstatconv.h: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/check_pf.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getcpuclockid.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_getres.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_gettime.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_nanosleep.c: Likewise.
	* sysdeps/unix/sysv/linux/clock_settime.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-execstack.c: Likewise.
	* sysdeps/unix/sysv/linux/dl-osinfo.h: Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/futimesat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/poll.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fcntl.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/fxstatat.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c: Likewise.
	* sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev64.c: Likewise.
	* sysdeps/unix/sysv/linux/getcwd.c: Likewise.
	* sysdeps/unix/sysv/linux/getpagesize.c: Likewise.
	* sysdeps/unix/sysv/linux/getsysstats.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/fxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/lxstat.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/xstat.c: Likewise.
	* sysdeps/unix/sysv/linux/ia64/system.c: Likewise.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.
	* sysdeps/unix/sysv/linux/ifaddrs.c: Likewise.
	* sysdeps/unix/sysv/linux/ifreq.c: Likewise.
	* sysdeps/unix/sysv/linux/ldsodefs.h: Likewise.
	* sysdeps/unix/sysv/linux/lutimes.c: Likewise.
	* sysdeps/unix/sysv/linux/m68k/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/microblaze/nptl/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/accept4.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/recvmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/mips32/sendmmsg.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/mips/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/mmap64.c: Likewise.
	* sysdeps/unix/sysv/linux/netlinkaccess.h: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/chown.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/dl-sysdep.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc32/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_mask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/fpu/fe_nomask.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/makecontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/setcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/swapcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/powerpc/powerpc64/vfork.S: Likewise.
	* sysdeps/unix/sysv/linux/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/prof-freq.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/s390-32/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/s390/system.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pread64.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite.c: Likewise.
	* sysdeps/unix/sysv/linux/sh/pwrite64.c: Likewise.
	* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/sigpending.c: Likewise.
	* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
	* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/sparc64/xstatconv.c: Likewise.
	* sysdeps/unix/sysv/linux/sparc/system.c: Likewise.
	* sysdeps/unix/sysv/linux/syslog.c: Likewise.
	* sysdeps/unix/sysv/linux/system.c: Likewise.
	* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
	* sysdeps/unix/sysv/linux/timespec_get.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname.c: Likewise.
	* sysdeps/unix/sysv/linux/ttyname_r.c: Likewise.
	* sysdeps/unix/sysv/linux/utimensat.c: Likewise.
	* sysdeps/unix/sysv/linux/x86_64/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/xstatconv.h: Likewise.
2014-06-25 18:09:01 +00:00
Roland McGrath fcccd51286 Factor mmap/munmap of PT_LOAD segments out of _dl_map_object_from_fd et al. 2014-04-03 10:47:14 -07:00
Will Newton 7579d8d5cb Revert "Fix HP_SMALL_TIMING_AVAIL -Wundef warnings"
This reverts commit 53f1bed392.
2014-03-17 20:39:24 +00:00
Will Newton 53f1bed392 Fix HP_SMALL_TIMING_AVAIL -Wundef warnings
ChangeLog:

2014-03-17  Will Newton  <will.newton@linaro.org>

	* sysdeps/generic/ldsodefs.h: Check whether
	HP_SMALL_TIMING_AVAIL is defined with #ifdef rather
	than #if.
2014-03-17 16:05:22 +00:00
Carlos O'Donell d050367659 BZ #16613: Support TLS in audit libraries.
This commit fixes a bug where the dynamic loader would crash
when loading audit libraries, via LD_AUDIT, where those libraries
used TLS. The dynamic loader was not considering that the audit
libraries would use TLS and failed to bump the TLS generation
counter leaving TLS usage inconsistent after loading the audit
libraries.

https://sourceware.org/ml/libc-alpha/2014-02/msg00569.html
2014-02-25 13:18:15 -05:00
Allan McRae bf06bcee84 Revert "Patch [1/4] async-signal safe TLS."
This reverts commit 69a17d9d24.
2014-02-06 08:46:20 +10:00
Allan McRae 8b6785f083 Revert "Patch 3/4 of the effort to make TLS access async-signal-safe."
This reverts commit 35e8f7ab94.
2014-02-06 08:46:20 +10:00
Allan McRae dd654bf9ba Revert "Patch 2/4 of the effort to make TLS access async-signal-safe."
This reverts commit 1f33d36a8a.

Conflicts:
	elf/dl-misc.c

Also reverts the follow commits that were bug fixes to new code introduced
in the above commit:
063b2acbce
b627fdd585
e81c64bba1
2014-02-06 08:46:20 +10:00
Allan McRae d4697bc93d Update copyright notices with scripts/update-copyrights 2014-01-01 22:00:23 +10:00
Paul Pluzhnikov 1f33d36a8a Patch 2/4 of the effort to make TLS access async-signal-safe.
Add a signal-safe malloc replacement.

2013-12-18  Andrew Hunter  <ahh@google.com>

	* sysdeps/generic/ldsodefs.h (__signal_safe_memalign): New prototype.
	(__signal_safe_malloc, __signal_safe_free): Likewise.
	(__signal_safe_realloc, __signal_safe_calloc): Likewise.
	* elf/dl-misc.c (__signal_safe_allocator_header): New struct.
	(__signal_safe_memalign, __signal_safe_malloc): New function.
	(__signal_safe_free, __signal_safe_realloc): Likewise.
	(__signal_safe_calloc): Likewise.
	* elf/dl-tls.c (allocate_dtv, _dl_clear_dtv): Call signal-safe
	functions.
	(_dl_deallocate_tls, _dl_update_slotinfo): Likewise.
2013-12-18 16:46:18 -08:00
Paul Pluzhnikov 35e8f7ab94 Patch 3/4 of the effort to make TLS access async-signal-safe.
Factor out _dl_clear_dtv.

2013-12-18  Andrew Hunter  <ahh@google.com>

	* elf/Versions (ld): Add _dl_clear_dtv.
	* sysdeps/generic/ldsodefs.h (_dl_clear_dtv): New prototype.
	* elf/dl-tls.c (_dl_clear_dtv): New function.
	* nptl/allocatestack.c (get_cached_stack): Call _dl_clear_dtv.
2013-12-18 16:24:19 -08:00
Paul Pluzhnikov 69a17d9d24 Patch [1/4] async-signal safe TLS.
2013-12-18  Andrew Hunter  <ahh@google.com>

	* sysdeps/generic/ldsodefs.h (_dl_mask_all_signals): New prototype.
	(_dl_unmask_signals): Likewise.
	* sysdeps/mach/hurd/dl-sysdep.h (_dl_mask_all_signals): New stub.
	(_dl_unmask_all_signals): Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.h (_dl_mask_all_signals): New prototype.
	(_dl_unmask_all_signals): Likewise.
	* sysdeps/unix/sysv/linux/dl-sysdep.c (_dl_mask_all_signals): New function.
	(_dl_unmask_signals): Likewise.
2013-12-18 15:07:11 -08:00
Guy Martin daf75146de Don't use broken DL_AUTO_FUNCTION_ADDRESS()
On hppa and ia64, the macro DL_AUTO_FUNCTION_ADDRESS() uses the
variable fptr[2] in it's own scope.

The content of fptr[] is thus undefined right after the macro exits.
Newer gcc's (>= 4.7) reuse the stack space of this variable triggering
a segmentation fault in dl-init.c:69.

To fix this we rewrite the macros to make the call directly to init
and fini without needing to pass back a constructed function pointer.
2013-11-21 15:52:31 -05:00
Ryan S. Arnold 1ae8bfe07c Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type. 2013-06-28 16:50:48 -05:00
Siddhesh Poyarekar b937534868 Avoid crashing in LD_DEBUG when program name is unavailable
Resolves: #15465

The program name may be unavailable if the user application tampers
with argc and argv[].  Some parts of the dynamic linker caters for
this while others don't, so this patch consolidates the check and
fallback into a single macro and updates all users.
2013-05-29 21:34:12 +05:30
Ryan S. Arnold e054f49430 Add #include <stdint.h> for uint[32|64]_t usage (except installed headers). 2013-05-16 11:32:54 -05:00
Roland McGrath 8347c74cc5 Declare _dl_skip_args in ldsodefs.h header. 2013-05-07 14:49:26 -07:00
Roland McGrath dc0a026385 Make _dl_phdr pointer to const. 2013-03-28 15:39:32 -07:00
Roland McGrath 3d3436ae68 Consolidate declarations of _dl_phdr, _dl_phnum. 2013-03-28 15:33:57 -07:00
Roland McGrath bc16e260d0 Move _dl_non_dynamic_init, _dl_aux_init declarations. 2013-03-15 14:32:04 -07:00
Roland McGrath 7775448e57 Fix NEED_DL_SYSINFO_DSO conditionals. 2013-03-01 14:44:44 -08:00
Siddhesh Poyarekar be179c8a36 New function _dl_find_dso_for_object
Consolidate code to search for an address within a DSO.
2013-02-18 18:00:17 +05:30
Joseph Myers 568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
H.J. Lu 9bac1d8624 Define VERSYMIDX/VALIDX/ADDRIDX in ldsodefs.h 2012-09-28 11:30:57 -07:00
Roland McGrath bea9b19322 Fix lots of bitrot for stub configurations. 2012-07-30 16:34:33 -07:00
Joseph Myers 56e49b714e Move ldsodefs.h audit definitions to sysdeps directories. 2012-07-25 16:03:02 +00:00
Richard Henderson c7683a6d02 Add <sys/auxv.h> and getauxval. 2012-05-20 10:40:35 -07:00
Samuel Thibault 5d5722e8ac Hurd: Fix value of __libc_stack_end 2012-05-10 15:57:24 -07:00
Siddhesh Poyarekar 73d65cc378 New ld.so argument --inhibit-ldcache to disable ld.so.cache lookup
It may sometimes be desirable to make the dynamic linker only pick up
libraries from the library path and rpath and not look at the
ld.so.cache that ldconfig generates. An example of such a use case is
the glibc testsuite where the dynamic linker must not be influenced by
any external paths or caches.

This change adds a new option --inhibit-ldcache that when used, tells
the dynamic linker to not use ld.so.cache even if it is available.
2012-04-11 00:13:52 +05:30
H.J. Lu b749dbb9b7 Add forward declaration for La_x32_regs/La_x32_retval 2012-03-22 09:01:16 -07:00
H.J. Lu c8e43ba739 Add x32 support to dynamic linker audit 2012-03-21 17:14:49 -07:00
Paul Eggert 59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Ulrich Drepper 3f05895f12 Remove Alpha support from ldsodefs.h 2012-01-07 13:04:35 -05:00
Ulrich Drepper 664f8cb9d5 More IA-64 removal 2012-01-07 12:55:20 -05:00
Ulrich Drepper 174baab3f9 Improve printing of lookup scopes
The scope of a new object should be printed earlier and when the scope
of an already loaded object is extended only the changes should be
printed.
2011-08-16 16:11:03 -04:00
Roland McGrath 5e4287d16f Warning patrol. 2011-08-14 15:59:11 -07:00
Ulrich Drepper 73d7af4f4c Implement LD_DEBUG=scopes 2011-08-13 22:24:08 -04:00
Marek Polacek c8835729b8 _dl_sort_fini: Remove unused argument 2011-07-19 20:27:43 -04:00
Andreas Krebbel f09677388a Fix concurrency problem between dl_open and dl_iterate_phdr 2010-10-26 00:23:14 -04:00
Andreas Schwab 8e9f92e9d5 Require suid bit on audit objects in privileged programs 2010-10-24 21:43:15 -04:00
Andreas Schwab 5a2a1d7504 Don't deadlock in __dl_iterate_phdr while (un)loading objects. 2010-05-03 08:08:28 -07:00
Richard Henderson d09580b1e6 Mark _dl_random attribute_relro in the header file.
It's already so marked in dl-sysdep.c.  Failure to so mark
in the header file leads the compiler to believe that the
variable should be addressable via the .sdata section.

Signed-off-by: Richard Henderson <rth@twiddle.net>
2010-03-26 09:51:57 -07:00
Andreas Krebbel 3a56ea2673 ld.so: Adjust the auxv if ld.so is directly invoked.
If a binary gets invoked by passing it as argument to ld.so the stack
still holds the auxiliary vector of ld.so when entering the _start
routine of the executable.  So the invocation via ld.so is not fully
transparent to the executable.  This causes problems if the executable
wants to scan the auxv itself.
2010-01-15 09:09:35 -08:00
Ulrich Drepper 802fe9a1ca Handle unloading of DSO with a unique symbol definition. 2009-07-23 07:07:53 -07:00