Commit Graph

1646 Commits

Author SHA1 Message Date
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
Roland McGrath
bc2ba20ae8 ARM: Disable compat mcount code when unneeded. 2014-01-10 13:32:35 -08:00
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
Roland McGrath
6851bd4d97 Adjust generic swapon prototype to match Linux version. 2013-11-21 15:44:26 -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
Siddhesh Poyarekar
09544cbcd6 Consolidate multiple precision sin/cos functions 2013-10-08 11:50:17 +05:30
Carlos O'Donell
0b1f8e3564 BZ #15754: Fix test case for ARM.
Statically built binaries use __pointer_chk_guard_local,
while dynamically built binaries use __pointer_chk_guard.
Provide the right definition depending on the test case
we are building.
2013-09-23 01:44:38 -04:00
Carlos O'Donell
c61b4d41c9 BZ #15754: CVE-2013-4788
The pointer guard used for pointer mangling was not initialized for
static applications resulting in the security feature being disabled.
The pointer guard is now correctly initialized to a random value for
static applications. Existing static applications need to be
recompiled to take advantage of the fix.

The test tst-ptrguard1-static and tst-ptrguard1 add regression
coverage to ensure the pointer guards are sufficiently random
and initialized to a default value.
2013-09-23 00:52:09 -04:00
Maciej W. Rozycki
9c21573c02 MIPS: IEEE 754-2008 NaN encoding support
It has been a long practice for software using IEEE 754 floating-point
arithmetic run on MIPS processors to use an encoding of Not-a-Number
(NaN) data different to one used by software run on other processors.
And as of IEEE 754-2008 revision [1] this encoding does not follow one
recommended in the standard, as specified in section 6.2.1, where it
is stated that quiet NaNs should have the first bit (d1) of their
significand set to 1 while signalling NaNs should have that bit set to
0, but MIPS software interprets the two bits in the opposite manner.

As from revision 3.50 [2][3] the MIPS Architecture provides for
processors that support the IEEE 754-2008 preferred NaN encoding format.
As the two formats (further referred to as "legacy NaN" and "2008 NaN")
are incompatible to each other, tools have to provide support for the
two formats to help people avoid using incompatible binary modules.

The change is comprised of two functional groups of features, both of
which are required for correct support.

1. Dynamic linker support.

   To enforce the NaN encoding requirement in dynamic linking a new ELF
   file header flag has been defined.  This flag is set for 2008-NaN
   shared modules and executables and clear for legacy-NaN ones.  The
   dynamic linker silently ignores any incompatible modules it
   encounters in dependency processing.

   To avoid unnecessary processing of incompatible modules in the
   presence of a shared module cache, a set of new cache flags has been
   defined to mark 2008-NaN modules for the three ABIs supported.
   Changes to sysdeps/unix/sysv/linux/mips/readelflib.c have been made
   following an earlier code quality suggestion made here:

   http://sourceware.org/ml/libc-ports/2009-03/msg00036.html

   and are therefore a little bit more extensive than the minimum
   required.

   Finally a new name has been defined for the dynamic linker so that
   2008-NaN and legacy-NaN binaries can coexist on a single system that
   supports dual-mode operation and that a legacy dynamic linker that
   does not support verifying the 2008-NaN ELF file header flag is not
   chosen to interpret a 2008-NaN binary by accident.

2. Floating environment support.

   IEEE 754-2008 features are controlled in the Floating-Point Control
   and Status (FCSR) register and updates are needed to floating
   environment support so that the 2008-NaN flag is set correctly and
   the kernel default, inferred from the 2008-NaN ELF file header flag
   at the time an executable is loaded, respected.

As the NaN encoding format is a property of GCC code generation that is
both a user-selected GCC configuration default and can be overridden
with GCC options, code that needs to know what NaN encoding standard it
has been configured for checks for the __mips_nan2008 macro that is
defined internally by GCC whenever the 2008-NaN mode has been selected.
This mode is determined at the glibc configuration time and therefore a
few consistency checks have been added to catch cases where compilation
flags have been overridden by the user.

The 2008 NaN set of features relies on kernel support as the in-kernel
floating-point emulator needs to be aware of the NaN encoding used even
on hard-float processors and configure the FPU context according to the
value of the 2008 NaN ELF file header flag of the executable being
started.  As at this time work on kernel support is still in progress
and the relevant changes have not made their way yet to linux.org master
repository.

Therefore the minimum version supported has been artificially set to
10.0.0 so that 2008-NaN code is not accidentally run on a Linux kernel
that does not suppport it.  It is anticipated that the version is
adjusted later on to the actual initial linux.org kernel version to
support this feature.  Legacy NaN encoding support is unaffected, older
kernel versions remain supported.

[1] "IEEE Standard for Floating-Point Arithmetic", IEEE Computer
    Society, IEEE Std 754-2008, 29 August 2008

[2] "MIPS Architecture For Programmers, Volume I-A: Introduction to the
    MIPS32 Architecture", MIPS Technologies, Inc., Document Number:
    MD00082, Revision 3.50, September 20, 2012

[3] "MIPS Architecture For Programmers, Volume I-A: Introduction to the
    MIPS64 Architecture", MIPS Technologies, Inc., Document Number:
    MD00083, Revision 3.50, September 20, 2012
2013-09-18 21:33:50 +01:00
Ryan S. Arnold
1ae8bfe07c Add GLRO(dl_hwcap2) for new AT_HWCAP2 auxv_t a_type. 2013-06-28 16:50:48 -05:00
Mike Frysinger
17db6e8d6b [BZ #10283] localedef: align fixed maps to SHMLBA
Many Linux arches require fixed mmaps to be aligned higher than pagesize,
so use the SHMLBA define as it represents this quantity exactly.

This fixes spurious errors seen on those arches like:
cannot map archive header: Invalid argument

URL: http://sourceware.org/bugzilla/show_bug.cgi?id=10283
Reported-by: CHIKAMA Masaki <masaki.chikama@gmail.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-06-24 20:26:58 -04:00
Adhemerval Zanella
6a97b62a5b Fix unsafe compiler optimization
GCC 4.8 enables -ftree-loop-distribute-patterns at -O3 by default and
this optimization may transform loops into memset/memmove calls. Without
proper handling this may generate unexpected PLT calls on GLIBC.
This patch fixes by create memset/memmove alias to internal GLIBC
__GI_memset/__GI_memmove symbols.
2013-06-12 10:21:22 -05:00
Siddhesh Poyarekar
2506109403 Set/restore rounding mode only when needed
The most common use case of math functions is with default rounding
mode, i.e. rounding to nearest.  Setting and restoring rounding mode
is an unnecessary overhead for this, so I've added support for a
context, which does the set/restore only if the FP status needs a
change.  The code is written such that only x86 uses these.  Other
architectures should be unaffected by it, but would definitely benefit
if the set/restore has as much overhead relative to the rest of the
code, as the x86 bits do.

Here's a summary of the performance improvement due to these
improvements; I've only mentioned functions that use the set/restore
and have benchmark inputs for x86_64:

Before:

cos(): ITERS:4.69335e+08: TOTAL:28884.6Mcy, MAX:4080.28cy, MIN:57.562cy, 16248.6 calls/Mcy
exp(): ITERS:4.47604e+08: TOTAL:28796.2Mcy, MAX:207.721cy, MIN:62.385cy, 15543.9 calls/Mcy
pow(): ITERS:1.63485e+08: TOTAL:28879.9Mcy, MAX:362.255cy, MIN:172.469cy, 5660.86 calls/Mcy
sin(): ITERS:3.89578e+08: TOTAL:28900Mcy, MAX:704.859cy, MIN:47.583cy, 13480.2 calls/Mcy
tan(): ITERS:7.0971e+07: TOTAL:28902.2Mcy, MAX:1357.79cy, MIN:388.58cy, 2455.55 calls/Mcy

After:

cos(): ITERS:6.0014e+08: TOTAL:28875.9Mcy, MAX:364.283cy, MIN:45.716cy, 20783.4 calls/Mcy
exp(): ITERS:5.48578e+08: TOTAL:28764.9Mcy, MAX:191.617cy, MIN:51.011cy, 19071.1 calls/Mcy
pow(): ITERS:1.70013e+08: TOTAL:28873.6Mcy, MAX:689.522cy, MIN:163.989cy, 5888.18 calls/Mcy
sin(): ITERS:4.64079e+08: TOTAL:28891.5Mcy, MAX:6959.3cy, MIN:36.189cy, 16062.8 calls/Mcy
tan(): ITERS:7.2354e+07: TOTAL:28898.9Mcy, MAX:1295.57cy, MIN:380.698cy, 2503.7 calls/Mcy

So the improvements are:

cos: 27.9089%
exp: 22.6919%
pow: 4.01564%
sin: 19.1585%
tan: 1.96086%

The downside of the change is that it will have an adverse performance
impact on non-default rounding modes, but I think the tradeoff is
justified.
2013-06-12 10:36:48 +05:30
Joseph Myers
f1d73d30df Add exception information to math-tests.h and use it in libm-test.inc. 2013-06-11 15:44:31 +00:00
Joseph Myers
0efa6f8b99 Add rounding mode information to math-tests.h and use it in libm-test.inc. 2013-06-10 12:34:49 +00:00
Joseph Myers
2e09a79ada Avoid use of "register" as optimization hint. 2013-06-07 22:24:35 +00:00
Ondrej Bilka
350635a59a Fix leading whitespaces. 2013-06-06 20:36:07 +02:00
Siddhesh Poyarekar
4c60cb0c83 Skip modifying exception mask and flags in SET_RESTORE_ROUND_53BIT
We only need to set/restore rounding mode to ensure correct
computation for non-default rounding modes.
2013-06-05 13:56:19 +05:30
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
Joseph Myers
d8cd06db62 Improve tgamma accuracy (bugs 2546, 2560, 5159, 15426). 2013-05-08 11:58:18 +00:00
Roland McGrath
8347c74cc5 Declare _dl_skip_args in ldsodefs.h header. 2013-05-07 14:49:26 -07:00
Roland McGrath
962e6658a3 Flesh out stub not-cancel.h file. 2013-05-06 16:03:35 -07:00
Paul Pluzhnikov
1ef74943ce Get rid of __STDC_FORMAT_MACROS, __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS 2013-04-25 11:08:31 -07:00
Thomas Schwinge
572676160d New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
It is based on draft TS 18661 and currently enabled as a GNU extension.
2013-04-02 13:51:02 +02:00
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
Thomas Schwinge
5aa4a1a1fd On 32-bit x86, disable certain tests involving sNaN values.
Follow-up to commit 495ded2c8c.
2013-03-21 16:05:29 +01:00
Roland McGrath
bc16e260d0 Move _dl_non_dynamic_init, _dl_aux_init declarations. 2013-03-15 14:32:04 -07:00
Joseph Myers
2d67d91ac0 Remove powerpc64 bounded-pointers code. 2013-03-06 00:10:21 +00:00
Roland McGrath
7775448e57 Fix NEED_DL_SYSINFO_DSO conditionals. 2013-03-01 14:44:44 -08:00
Mike Frysinger
6ff444c418 unify xmalloc prototypes & friends
These prototypes are duplicated in many places.  Add a dedicated
header for holding prototypes for program-specific functions to
avoid that.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-02-18 17:16:05 -05:00
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
70d9946a44 Remove __ptrvalue, __bounded and __unbounded. 2013-02-13 23:30:40 +00:00
Joseph Myers
a2da1673fe Remove CHECK_N and bp-checks.h. 2013-02-08 20:06:30 +00:00
Carlos O'Donell
b39949d211 ARM: Support loading unmarked objects from cache.
ARM now supports loading unmarked objects from
the dynamic loader cache. Unmarked objects can
be used with the hard-float or soft-float ABI.
We must support loading unmarked objects during
the transition period from a binutils that does
not mark objects to one that does mark them with
the correct ELF flags.

Signed-off-by: Carlos O'Donell <carlos@redhat.com>
2013-02-08 12:26:12 -05:00
Joseph Myers
f3aae3f3eb Remove CHECK_1 and CHECK_1_NULL_OK. 2013-02-08 01:12:11 +00:00
Joseph Myers
b2c9eff43c Remove CHECK_BOUNDS_LOW and CHECK_BOUNDS_HIGH for C code. 2013-02-08 01:10:40 +00:00
Roland McGrath
eab55bfb14 Add missing includes to sysdeps/generic/malloc-sysdep.h. 2013-02-05 11:34:06 -08:00
Joseph Myers
6277fdabc0 Remove CHECK_STRING, CHECK_STRING_NULL_OK and __ubp_memchr. 2013-02-04 16:29:39 +00:00
Joseph Myers
e782a927c2 Remove BOUNDED_N and BOUNDED_1. 2013-02-01 06:35:29 +00:00
Joseph Myers
3a7ac8a0f5 Remove bp-start.h and INIT_ARGV_and_ENVIRON. 2013-02-01 00:06:18 +00:00
Joseph Myers
f3499f95c8 Remove CHECK_IOCTL, CHECK_FCNTL and CHECK_N_PAGES. 2013-01-31 23:01:01 +00:00
Joseph Myers
32a45bea39 Remove CHECK_SIGSET and CHECK_SIGSET_NULL_OK. 2013-01-31 23:00:15 +00:00
Joseph Myers
2e8a5c8c46 Remove bp-semctl.h and CHECK_SEMCTL. 2013-01-31 22:59:04 +00:00
Joseph Myers
c2d549290d Remove bp-thunks code. 2013-01-31 22:57:06 +00:00
Joseph Myers
828beb132d Use __extension__ with long long in installed headers. 2013-01-10 20:19:45 +00:00
Joseph Myers
568035b787 Update copyright notices with scripts/update-copyrights. 2013-01-02 19:05:09 +00:00
Joseph Myers
f4cf5f2d8b Add script to update copyright notices and reformat some to facilitate its use. 2013-01-01 16:29:10 +00:00
Chris Metcalf
82123268ac Fix warnings from generic _FPU_GETCW 2012-12-06 10:42:06 -05:00
David S. Miller
c8df52eccf Fix sparc build with older compilers.
* sysdeps/generic/memcopy.h: Add multiple inclusion protection.
2012-12-04 16:05:57 -05:00
Joseph Myers
4cf77aa984 Fix strict-aliasing warnings from unwind-dw2-fde.c. 2012-11-27 00:01:10 +00:00
Joseph Myers
79c9b9feb4 Mark unwind-dw2-fde-glibc.c variable possibly unused. 2012-11-22 16:47:54 +00:00
Steve McIntyre
1f51ee9246 Add ldconfig cache tag handling for AArch64
* sysdeps/generic/ldconfig.h (FLAG_AARCH64_LIB64): New macro.
	* elf/cache.c (print_entry): Print ",AArch64" for
	FLAG_AARCH64_LIB64.

Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
2012-11-19 01:22:33 -05:00
Steve McIntyre
6665d4a25d Add ldconfig cache tag handling for ARM hard-float ABI
* sysdeps/generic/ldconfig.h (FLAG_ARM_LIBHF): New macro.
	* elf/cache.c (print_entry): Print ",hard-float" for
	FLAG_ARM_LIBHF.

Signed-off-by: Steve McIntyre <steve.mcintyre@linaro.org>
Reviewed-by: Carlos O'Donell <carlos@systemhalted.org>
2012-11-19 01:12:53 -05:00
Pino Toscano
a20492cffc generic paths.h: remove old paths from _PATH_STDPATH
Remove /usr/contrib/bin and /usr/old/bin from _PATH_STDPATH, since they seem
to be part only of old BSDs, Solaris and HP-UX.
2012-11-04 10:11:39 +01:00
Pino Toscano
72e182e38d Fix small indendation issues in paths.h files 2012-11-04 10:10:58 +01:00
Joseph Myers
5b5b04d628 Make fma use of Dekker and Knuth algorithms use round-to-nearest (bug 14796). 2012-11-03 19:48:53 +00:00
Joseph Myers
2a27fd6dae Fix strtod handling of underflow (bug 14047). 2012-10-30 13:51:27 +00:00
Joseph Myers
ced52c719c Remove _G_OPEN64, _G_LSEEK64, _G_MMAP64, _G_FSTAT64 from _G_config.h. 2012-10-18 18:50:43 +00:00
Alexandre Oliva
e745142509 * crypt/crypt-entry.c: Include fips-private.h.
(__crypt_r, __crypt): Disable MD5 and DES if FIPS is enabled.
* crypt/md5c-test.c (main): Tolerate disabled MD5.
* sysdeps/unix/sysv/linux/fips-private.h: New file.
* sysdeps/generic/fips-private.h: New file, dummy fallback.
2012-10-10 07:05:46 -03:00
Joseph Myers
c8450f70fa Remove _G_off64_t and _G_stat64 from _G_config.h. 2012-10-09 15:09:32 +00:00
Roland McGrath
ac51c94918 Move _G_config.h with Linuxism to linux/ directory. 2012-09-28 15:45:07 -07:00
H.J. Lu
9bac1d8624 Define VERSYMIDX/VALIDX/ADDRIDX in ldsodefs.h 2012-09-28 11:30:57 -07:00
Joseph Myers
d032e0d29b Fix inaccuracy of clog, clog10 near |z| = 1 (bug 13629). 2012-09-25 19:43:49 +00:00
Joseph Myers
203e56032f Remove various _G_*_t type names. 2012-09-25 12:37:37 +00:00
Siddhesh Poyarekar
9fab36eb58 Shrink heap on linux when overcommit_memory == 2
Using madvise with MADV_DONTNEED to release memory back to the kernel
is not sufficient to change the commit charge accounted against the
process on Linux.  It is OK however, when overcommit is enabled or is
heuristic.  However, when overcommit is restricted to a percentage of
memory setting the contents of /proc/sys/vm/overcommit_memory as 2, it
makes a difference since memory requests will fail.  Hence, we do what
we do with secure exec binaries, which is to call mmap on the region
to be dropped with MAP_FIXED. This internally unmaps the pages in
question and reduces the amount of memory accounted against the
process.
2012-09-25 14:30:52 +05:30
Joseph Myers
431531094f Remove _G_HAVE_SYS_WAIT and _IO_HAVE_SYS_WAIT. 2012-09-21 10:02:03 +00:00
Joseph Myers
8a26625d21 Remove _G_NEED_STDARG_H. 2012-09-20 14:41:02 +00:00
Joseph Myers
b7aaa4d6d2 Remove _G_HAVE_IO_GETLINE_INFO. 2012-09-17 11:43:06 +00:00
Joseph Myers
ad35fc005b Remove _G_HAVE_PRINTF_FP. 2012-09-13 16:13:09 +00:00
Joseph Myers
6c9b0f6826 Make strtod respect the rounding mode (bug 14518). 2012-09-12 23:36:19 +00:00
Joseph Myers
8bbfd2f14a Remove unused typedefs and macros from _G_config.h. 2012-09-11 20:32:13 +00:00
Joseph Myers
0e886ef96e Remove libio C++ vtable definitions. 2012-09-10 21:22:42 +00:00
Roland McGrath
750c1f2a9a Make malloc build for no-threads configurations. 2012-08-17 11:29:45 -07:00
Roland McGrath
e66a42f57f Split sys/param.h out into common file and sysdeps bits/param.h file. 2012-08-17 09:55:17 -07:00
Roland McGrath
4f75b7a09a Distinguish ELOOP diagnosis threshold from SYMLOOP_MAX. 2012-08-03 11:39:30 -07:00
Roland McGrath
4338511686 foo 2012-08-01 10:47:21 -07:00
Roland McGrath
7ecdb00561 Don't assume SIGWINCH is defined. 2012-07-31 09:39:14 -07:00
Roland McGrath
bea9b19322 Fix lots of bitrot for stub configurations. 2012-07-30 16:34:33 -07:00
Joseph Myers
3129cfc6ec Move testsuite audit definitions to sysdeps tst-audit.h files. 2012-07-26 11:29:07 +00:00
Joseph Myers
56e49b714e Move ldsodefs.h audit definitions to sysdeps directories. 2012-07-25 16:03:02 +00:00
Joseph Myers
0f48659e36 Move localplt baselines to sysdeps directories. 2012-07-20 19:20:34 +00:00
Andreas Schwab
5be8418cb0 Remove use of INTDEF/INTUSE in stdio-common 2012-06-01 01:25:41 +02:00
Richard Henderson
c7683a6d02 Add <sys/auxv.h> and getauxval. 2012-05-20 10:40:35 -07:00
Joseph Myers
a9538892ad Split up stackguard-macros.h into sysdeps directories. 2012-05-15 23:34:30 +00:00
Samuel Thibault
3c3571fc10 Hurd: Fix paths in paths.h 2012-05-10 15:57:29 -07:00
Samuel Thibault
5d5722e8ac Hurd: Fix value of __libc_stack_end 2012-05-10 15:57:24 -07:00
David S. Miller
48df16de98 Add missed zero length files in previous abilist commit. 2012-04-28 15:38:24 -04:00
Siddhesh Poyarekar
6e236b9276 move libgcc_s soname definition to shlib-versions 2012-04-26 09:19:54 +05:30
David S. Miller
50f81fd74b Remove all traces of reg_char.
* sysdeps/generic/memcopy.h (reg_char): Delete.
	* debug/strcat_chk.c: Use char, not reg_char.
	* debug/strcpy_chk.c: Likewise.
	* debug/strncat_chk.c: Likewise.
	* debug/strncpy_chk.c: Likewise.
	* string/memchr.c: Likewise.
	* string/memrchr.c: Likewise.
	* string/rawmemchr.c: Likewise.
	* string/strcat.c: Likewise.
	* string/strchr.c: Likewise.
	* string/strchrnul.c: Likewise.
	* string/strcmp.c: Likewise.
	* string/strcpy.c: Likewise.
	* string/strncat.c: Likewise.
	* string/strncmp.c: Likewise.
	* string/strncpy.c: Likewise.
2012-04-18 16:19:10 -07:00
Adhemerval Zanella
76da726532 Fix ilogb exception and errno (bug 6794)
[BZ #6794]
Following Joseph comments about bug 6794, here is a proposed fix. It turned out
to be a large fix mainly because I had to move some file along to follow libm
files/names conventions.

Basically I have added wrappers (w_ilogb.c, w_ilogbf.c, w_ilogbl.c) that now calls
the symbol '__ieee754_ilogb'. The wrappers checks for '__ieee754_ilogb' output and
set the errno and raise exceptions as expected.

The '__ieee754_ilogb' is implemented in sysdeps. I have moved the 's_ilogb[f|l]' files
to e_ilogb[f|l] and renamed the '__ilogb[f|l]' to '__ieee754_ilogb[f|l]'.

I also found out a bug in i386 and x86-64 assembly coded ilogb implementation where
it raises a FE_DIVBYZERO when argument is '0.0'. I corrected this issue as well.

Finally I added the errno and FE_INVALID tests for 0.0, NaN and +-InF argument. Tested
on i386, x86-64, ppc32 and ppc64.
2012-04-17 22:12:53 +02:00
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
Joseph Myers
41bf21a1e7 Avoid overflows from long double functions using __kernel_standard. 2012-03-28 09:32:12 +00:00
Andreas Jaeger
1e3cdfda74 Merge branch 'elf-move'
Conflicts:
	debug/backtracesymsfd.c
	sysdeps/generic/elf/backtracesymsfd.c
	sysdeps/i386/configure.in
2012-03-27 21:35:36 +02:00
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
H.J. Lu
8e95c99a7a Add _ITOA_NEEDED and _ITOA_WORD_TYPE
Add _ITOA_NEEDED and _ITOA_WORD_TYPE to override _itoa and _itowa.
2012-03-21 14:38:47 -07:00
H.J. Lu
eb96ffb07d Move stdio-common/_itoa.h to sysdeps/generic 2012-03-20 16:00:23 -07:00
Andreas Jaeger
1d6c3d237d Remove old debug/backtracesyms files, replace with elf versions. 2012-03-20 09:32:41 +01:00
Andreas Jaeger
c93ba10617 Move sysdeps/generic/elf/* to sysdeps/generic 2012-03-19 21:04:21 +01:00
Richard Henderson
0fe0f1f86f Create and use libc_feupdateenv_test.
We can reduce the number of STMXCSR, and often we can avoid the
call to __feraiseexcept.
2012-03-19 06:50:41 -07:00
Richard Henderson
eb92c487b3 Create and use SET_RESTORE_ROUND{,_NOEX,_53BIT}{,F,L}. 2012-03-19 06:49:44 -07:00
Richard Henderson
b4dabbb47a Convert libc_feholdexcept et al from macros to inline functions. 2012-03-19 06:48:27 -07:00
Richard Henderson
4851a949b4 Make inline __isnan, __isinf_ns, __finite generic.
For code generation to stay identical on x86_64, this requires that
we define the fp word manipulation macros before including the
generic header.
2012-03-19 06:47:43 -07:00
H.J. Lu
f1a77b01f4 Add x32 support to ldconfig 2012-03-16 15:20:45 -07:00
Andreas Jaeger
c4814b6b3a Implement and use libc_feholdexcept_setround_53bit and libc_feupdateenv_53bit
so that double arithmetic in s_sin is done in 53 bit (without extend i386 double precision)
2012-03-14 17:20:10 +01:00
David S. Miller
98bb2f1cd2 Fix another instance of the _dl_random masking bug, plus coding style.
* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Fix
	masking out of the most significant byte of random value used.
	* sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard):
	Fix coding style in previous change.
2012-03-12 15:57:17 -07:00
Richard Henderson
5f0a5daeee Move math/math_private.h to sysdeps/generic/math_private.h.
This reverts commit 60d6f5a6f5.
2012-03-09 16:12:17 -08:00
Tom de Vries
6c6a98c983 2012-03-05 Tom de Vries <tom@codesourcery.com>
* sysdeps/generic/dl-osinfo.h (_dl_setup_stack_chk_guard): Ensure
	default stack guard is set in last bytes.
	* sysdeps/unix/sysv/linux/dl-osinfo.h (_dl_setup_stack_chk_guard): Same.
2012-03-05 11:05:42 +01:00
Joseph Myers
0e7dfaef51 Remove old initfini mechanism. 2012-02-21 00:46:01 +00:00
Paul Eggert
59ba27a63a Replace FSF snail mail address with URLs. 2012-02-09 23:18:22 +00:00
Marek Polacek
6b73181ac5 Remove _G_HAVE_SYS_CDEFS. 2012-02-09 17:09:55 +01:00
Marek Polacek
a22f12b477 Remove _G_ARGS macros. 2012-02-07 22:40:49 +01:00
Joseph Myers
965a54a4ee Remove __STDC__ conditionals from non-installed headers. 2012-01-26 23:31:37 +00:00
Joseph Myers
7071ad79db Remove __STDC__ conditionals from installed headers. 2012-01-26 20:49:22 +00:00
Ulrich Drepper
ec09c1c410 Optimize xmalloc, xcalloc, xrealloc, and xstrdup
Add alloc_size attribute and apply consistently the malloc attribute
to xmalloc, xcalloc, xrealloc, and xstrdup.
2012-01-08 21:19:43 -05:00
Ulrich Drepper
a0da5fe1e4 More fallout from supporting only ELF 2012-01-08 00:45:01 -05:00
Ulrich Drepper
a784e50247 Remove pre-ISO C support
No more __const.
2012-01-07 23:57:22 -05:00
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
f039c04307 Optimize generic ELF hash function a bit more 2011-12-10 11:53:44 -05:00
Ulrich Drepper
52ad36a219 Small optimization of generic ELF hash function 2011-12-04 17:44:33 -05:00
Ulrich Drepper
52ff5dd0e4 Fix attreibute for _dl_elf_hash 2011-12-04 16:12:20 -05:00
Ulrich Drepper
aff2453df7 Fix more warnings 2011-12-03 21:49:35 -05:00
Ulrich Drepper
ca743930cd Prepare dwarf2.h for multiple inclusion 2011-11-12 02:11:48 -05:00
Ulrich Drepper
7da46b42d1 Fix incomplete edit in last patch 2011-11-12 02:10:45 -05:00
Ulrich Drepper
874e05643b Avoid redefinition of DWARF constants 2011-11-12 02:06:05 -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
Aurelien Jarno
751626f948 Fix build with multiarch disabled. 2011-06-29 05:00:49 -07:00
Ulrich Drepper
15a856b109 Make stack canary value harder to read through read overflow 2011-05-15 10:59:07 -04:00
Ulrich Drepper
32ad1972a8 Fix typo in comment 2011-05-14 11:16:18 -04:00
Ulrich Drepper
da3c19ef5a Fix potential problem with out-of-scope buffer 2011-05-14 11:13:31 -04:00
Jim Meyering
ded5b9b7c7 Remove doubled words. 2011-04-22 21:34:32 -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
Ulrich Drepper
15bac72bac Fix IPTOS_CLASS definition. 2010-08-11 07:44:03 -07:00
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
Philip Prindeville
dca5d51ebf Define IPTOS_CLASS_* macros according to RFC 2474. 2010-01-14 23:28:05 -08:00
Andreas Schwab
13f6812ffb Make name of libgcc_s library configurable 2009-11-03 23:52:01 +01:00