Commit Graph

27186 Commits

Author SHA1 Message Date
Siddhesh Poyarekar
a387428ca7 ChangeLog formatting fix 2014-03-21 18:11:52 +05:30
Siddhesh Poyarekar
df26ea5359 Implement benchmarking script in python
Implemented the benchmark script in python since it is much cleaner
and simpler to maintain.
2014-03-21 17:32:50 +05:30
Siddhesh Poyarekar
fdf4534d02 Fix -Wundef warnins for __FP_FAST_FMA*
The macros are defined by the compiler, so we can only verify whether
they are defined or not.
2014-03-21 17:28:43 +05:30
Adhemerval Zanella
6f23d0939e PowerPC: optimized strpbrk for POWER7
This patch add an optimized strpbrk for POWER7 by using a different
algorithm than default implementation: it constructs a table based on
the 'accept' argument and use this table to check for any occurance on
the input string. The idea is similar as x86_64 uses.
For PowerPC some tunings were added, such as unroll loops and memory
clear using VSX instructions.
2014-03-20 19:46:13 -05:00
Joseph Myers
8c92dfff41 Test most libm functions in all rounding modes.
This patch makes libm-test.inc tests of most functions use ALL_RM_TEST
unless there was some reason to defer that change for a particular
function.

I started out planning to defer the change for pow (bug 16315), cexp /
ccos / ccosh / csin / csinh (likely fallout from exp, bug 16284) and
cpow (exact expectations for signs of exact zero results not wanted).
Testing on x86_64 and x86 showed additional failures for acosh, cacos,
catan, catanh, clog, clog10, jn, log, log10, log1p, log2, tgamma, yn,
so making the change for those functions was deferred as well, pending
investigation to show which of these represent distinct bugs (some
such bugs may already be filed) and appropriate fixing / XFAILing.
Failures include wrong signs of zero results, errors slightly above
the 9ulp bound (in such cases it may make sense for functions to set
round-to-nearest internally to reduce error accumulation), large
errors and incorrect overflow/underflow for the rounding mode (with
consequent missing errno settings in some cases).  It's possible some
could be issues with test expectations, though I didn't notice any
that were obviously like that (I added NO_TEST_INLINE for cases that
were failing for ildoubl on x86 and where it seemed reasonable for
them to fail for the fast-math inlines).

There may of course be failures on other architectures for functions
that didn't fail on x86_64 or x86, in which case the usual rule
applies: file a bug (preferably identifying the underlying problem
function, in cases where function A calls function B and a problem
with function B may present in the test results for function A) if not
already in Bugzilla then fix or XFAIL.

Tested x86_64 and x86 and ulps updated accordingly.

	* math/libm-test.inc (asinh_test): Use ALL_RM_TEST.
	(atan_test): Likewise.
	(atanh_test_data): Use NO_TEST_INLINE for two tests.
	(atanh_test): Use ALL_RM_TEST.
	(atan2_test_data): Likewise.
	(cabs_test): Likewise.
	(cacosh_test): Likewise.
	(carg_test): Likewise.
	(casin_test): Likewise.
	(casinh_test): Likewise.
	(cbrt_test): Likewise.
	(csqrt_test): Likewise.
	(erf_test): Likewise.
	(erfc_test): Likewise.
	(pow10_test): Likewise.
	(exp2_test): Likewise.
	(hypot_test): Likewise.
	(j0_test): Likewise.
	(j1_test): Likewise.
	(lgamma_test): Likewise.
	(gamma_test): Likewise.
	(sincos_test): Likewise.
	(tanh_test): Likewise.
	(y0_test): Likewise.
	(y1_test): Likewise.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
2014-03-21 00:03:38 +00:00
Adhemerval Zanella
6eaf95cbfa PowerPC: optimized strcspn for PPC64/POWER7
This patch add a optimized strcspn for POWER7 by using a different
algorithm than default implementation: it constructs a table based on
the 'accept' argument and use this table to check for any occurance
on the input string. The idea is similar as x86_64 uses.
For PowerPC some tunings were added, such as unroll loops and align
stack memory to table to 16 bytes (so VSX clean can ran without
alignment issues).
2014-03-20 11:24:52 -05:00
Joseph Myers
ae3a5dff0f Make libm-test support ALL_RM_TEST with AUTO_TESTS_*.
This patch continues improvements to all-rounding-mode libm testing by
making testing with ALL_RM_TEST support test results from
auto-libm-test-out.  gen-libm-test.pl is adapted to generate
appropriate output with results for each rounding mode, with
AUTO_TESTS_* calls no longer specifying a rounding mode.  Where there
were separate functions in libm-test.inc to test a function in each
rounding mode, using AUTO_TESTS_* to list the tests for each rounding
mode, those are converted to using ALL_RM_TEST (so generally this
patch doesn't change the sets of tests run in each rounding mode,
except that in various cases special-case tests given directly in
libm-test.inc were previously run only for round-to-nearest, and now
are run for all rounding modes).

Tested x86_64 and x86.

	* math/gen-libm-test.pl (generate_testfile): Expect only function
	name as argument to AUTO_TESTS_* and pass results for all rounding
	modes to parse_args.
	(parse_auto_input): Separate inputs of automatic tests from
	outputs before storing in %auto_tests.
	* math/libm-test.inc (acos_test_data): Update call to
	AUTO_TESTS_f_f.
	(acos_test): Use ALL_RM_TEST.
	(acos_tonearest_test_data): Remove.
	(acos_test_tonearest): Likewise.
	(acos_towardzero_test_data): Likewise.
	(acos_test_towardzero): Likewise.
	(acos_downward_test_data): Likewise.
	(acos_test_downward): Likewise.
	(acos_upward_test_data): Likewise.
	(acos_test_upward): Likewise.
	(acosh_test_data): Update call to AUTO_TESTS_f_f.
	(asin_test_data): Likewise.
	(asin_test): Use ALL_RM_TEST.
	(asin_tonearest_test_data): Remove.
	(asin_test_tonearest): Likewise.
	(asin_towardzero_test_data): Likewise.
	(asin_test_towardzero): Likewise.
	(asin_downward_test_data): Likewise.
	(asin_test_downward): Likewise.
	(asin_upward_test_data): Likewise.
	(asin_test_upward): Likewise.
	(asinh_test_data): Update call to AUTO_TESTS_f_f.
	(atan_test_data): Likewise.
	(atanh_test_data): Likewise.
	(atan2_test_data): Update call to AUTO_TESTS_ff_f.
	(cabs_test_data): Update call to AUTO_TESTS_c_f.
	(carg_test_data): Likewise.
	(cbrt_test_data): Update call to AUTO_TESTS_f_f.
	(ccos_test_data): Update call to AUTO_TESTS_c_c.
	(ccosh_test_data): Likewise.
	(cexp_test_data): Likewise.
	(clog_test_data): Likewise.
	(clog10_test_data): Likewise.
	(cos_test_data): Update call to AUTO_TESTS_f_f.
	(cos_test): Use ALL_RM_TEST.
	(cos_tonearest_test_data): Remove.
	(cos_test_tonearest): Likewise.
	(cos_towardzero_test_data): Likewise.
	(cos_test_towardzero): Likewise.
	(cos_downward_test_data): Likewise.
	(cos_test_downward): Likewise.
	(cos_upward_test_data): Likewise.
	(cos_test_upward): Likewise.
	(cosh_test_data): Update call to AUTO_TESTS_f_f.
	(cosh_test): Use ALL_RM_TEST.
	(cosh_tonearest_test_data): Remove.
	(cosh_test_tonearest): Likewise.
	(cosh_towardzero_test_data): Likewise.
	(cosh_test_towardzero): Likewise.
	(cosh_downward_test_data): Likewise.
	(cosh_test_downward): Likewise.
	(cosh_upward_test_data): Likewise.
	(cosh_test_upward): Likewise.
	(cpow_test_data): Update call to AUTO_TESTS_cc_c.
	(csqrt_test_data): Update call to AUTO_TESTS_c_c.
	(ctan_test_data): Likewise.
	(ctan_test): Use ALL_RM_TEST.
	(ctan_tonearest_test_data): Remove.
	(ctan_test_tonearest): Likewise.
	(ctan_towardzero_test_data): Likewise.
	(ctan_test_towardzero): Likewise.
	(ctan_downward_test_data): Likewise.
	(ctan_test_downward): Likewise.
	(ctan_upward_test_data): Likewise.
	(ctan_test_upward): Likewise.
	(ctanh_test_data): Update call to AUTO_TESTS_c_c.
	(ctanh_test): Use ALL_RM_TEST.
	(ctanh_tonearest_test_data): Remove.
	(ctanh_test_tonearest): Likewise.
	(ctanh_towardzero_test_data): Likewise.
	(ctanh_test_towardzero): Likewise.
	(ctanh_downward_test_data): Likewise.
	(ctanh_test_downward): Likewise.
	(ctanh_upward_test_data): Likewise.
	(ctanh_test_upward): Likewise.
	(erf_test_data): Update call to AUTO_TESTS_f_f.
	(erfc_test_data): Likewise.
	(exp_test_data): Likewise.
	(exp_test): Use ALL_RM_TEST.
	(exp_tonearest_test_data): Remove.
	(exp_test_tonearest): Likewise.
	(exp_towardzero_test_data): Likewise.
	(exp_test_towardzero): Likewise.
	(exp_downward_test_data): Likewise.
	(exp_test_downward): Likewise.
	(exp_upward_test_data): Likewise.
	(exp_test_upward): Likewise.
	(exp10_test_data): Update call to AUTO_TESTS_f_f.
	(exp10_test): Use ALL_RM_TEST.
	(exp10_tonearest_test_data): Remove.
	(exp10_test_tonearest): Likewise.
	(exp10_towardzero_test_data): Likewise.
	(exp10_test_towardzero): Likewise.
	(exp10_downward_test_data): Likewise.
	(exp10_test_downward): Likewise.
	(exp10_upward_test_data): Likewise.
	(exp10_test_upward): Likewise.
	(exp2_test_data): Update call to AUTO_TESTS_f_f.
	(expm1_test_data): Likewise.
	(expm1_test): Use ALL_RM_TEST.
	(expm1_tonearest_test_data): Remove.
	(expm1_test_tonearest): Likewise.
	(expm1_towardzero_test_data): Likewise.
	(expm1_test_towardzero): Likewise.
	(expm1_downward_test_data): Likewise.
	(expm1_test_downward): Likewise.
	(expm1_upward_test_data): Likewise.
	(expm1_test_upward): Likewise.
	(fma_test_data): Update call to AUTO_TESTS_fff_f.
	(fma_test): Use ALL_RM_TEST.
	(fma_towardzero_test_data): Remove.
	(fma_test_towardzero): Likewise.
	(fma_downward_test_data): Likewise.
	(fma_test_downward): Likewise.
	(fma_upward_test_data): Likewise.
	(fma_test_upward): Likewise.
	(hypot_test_data): Update call to AUTO_TESTS_ff_f.
	(j0_test_data): Update call to AUTO_TESTS_f_f.
	(j1_test_data): Likewise.
	(jn_test_data): Update call to AUTO_TESTS_if_f.
	(lgamma_test_data): Update call to AUTO_TESTS_f_f1.
	(log_test_data): Update call to AUTO_TESTS_f_f.
	(log10_test_data): Likewise.
	(log1p_test_data): Likewise.
	(log2_test_data): Likewise.
	(pow_test_data): Update call to AUTO_TESTS_ff_f.
	(pow_tonearest_test_data): Likewise.
	(sin_test_data): Update call to AUTO_TESTS_f_f.
	(sin_test): Use ALL_RM_TEST.
	(sin_tonearest_test_data): Remove.
	(sin_test_tonearest): Likewise.
	(sin_towardzero_test_data): Likewise.
	(sin_test_towardzero): Likewise.
	(sin_downward_test_data): Likewise.
	(sin_test_downward): Likewise.
	(sin_upward_test_data): Likewise.
	(sin_test_upward): Likewise.
	(sincos_test_data): Update call to AUTO_TESTS_fFF_11.
	(sinh_test_data): Update call to AUTO_TESTS_f_f.
	(sinh_test): Use ALL_RM_TEST.
	(sinh_tonearest_test_data): Remove.
	(sinh_test_tonearest): Likewise.
	(sinh_towardzero_test_data): Likewise.
	(sinh_test_towardzero): Likewise.
	(sinh_downward_test_data): Likewise.
	(sinh_test_downward): Likewise.
	(sinh_upward_test_data): Likewise.
	(sinh_test_upward): Likewise.
	(sqrt_test_data): Update call to AUTO_TESTS_f_f.
	(sqrt_test): Use ALL_RM_TEST.
	(sqrt_tonearest_test_data): Remove.
	(sqrt_test_tonearest): Likewise.
	(sqrt_towardzero_test_data): Likewise.
	(sqrt_test_towardzero): Likewise.
	(sqrt_downward_test_data): Likewise.
	(sqrt_test_downward): Likewise.
	(sqrt_upward_test_data): Likewise.
	(sqrt_test_upward): Likewise.
	(tan_test_data): Update call to AUTO_TESTS_f_f.
	(tan_test): Use ALL_RM_TEST.
	(tan_tonearest_test_data): Remove.
	(tan_test_tonearest): Likewise.
	(tan_towardzero_test_data): Likewise.
	(tan_test_towardzero): Likewise.
	(tan_downward_test_data): Likewise.
	(tan_test_downward): Likewise.
	(tan_upward_test_data): Likewise.
	(tan_test_upward): Likewise.
	(tanh_test_data): Update call to AUTO_TESTS_f_f.
	(tgamma_test_data): Likewise.
	(y0_test_data): Likewise.
	(y1_test_data): Likewise.
	(yn_test_data): Update call to AUTO_TESTS_if_f.
	(main): Do not call removed functions.
2014-03-20 11:48:07 +00:00
Joseph Myers
d71aeee886 Use ALL_RM_TEST for more libm tests.
Continuing the move to using ALL_RM_TEST for tests in libm-test.inc,
this patch converts the tests of fdim, ldexp and scalb.  fdim and
scalb are cases where tests could depend on the rounding mode though
none of the present test inputs do; ldexp is such a case where the
function is equivalent to scalbn (for binary floating point) and the
tests used were a subset of those for scalbn, so this patch makes
ldexp testing use the scalbn tests, as done for other cases of libm
function aliases.

Tested x86_64 and x86.

	* math/libm-test.inc (fdim_test): Use ALL_RM_TEST.
	(ldexp_test_data): Remove.
	(ldexp_test): Move to after scalbn_test.  Use ALL_RM_TEST with
	scalbn_test_data.
	(scalb_test): Use ALL_RM_TEST.
2014-03-19 16:17:22 +00:00
Andreas Schwab
baaf1dedc9 nscd: also invalidate netgroup cache on reload 2014-03-19 14:45:10 +01:00
Joseph Myers
b1115e916a Fix __ASSUME_PREADV and __ASSUME_PWRITEV for Alpha and MicroBlaze (bug 16649).
Reviewing (for all architectures, with a baseline kernel version of
2.6.32) the kernel support for features for which __ASSUME_* macros
would be affected by a move to 2.6.32 as minimum kernel version showed
up that __ASSUME_PREADV and __ASSUME_PWRITEV were wrongly defined for
MicroBlaze (despite the corresponding syscall table entries not being
wired up in the kernel) and Alpha for 2.6.30 and above (although the
support on Alpha was added in 2.6.33).  This patch makes the
kernel-features.h files undefine those macros for appropriate
versions.

	[BZ #16649]
	* sysdeps/unix/sysv/linux/alpha/kernel-features.h
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PREADV): Undefine.
	[__LINUX_KERNEL_VERSION < 0x020621] (__ASSUME_PWRITEV): Likewise.
	* sysdeps/unix/sysv/linux/microblaze/kernel-features.h
	(__ASSUME_PREADV): Undefine.
	(__ASSUME_PWRITEV): Likewise.
2014-03-19 13:10:52 +00:00
Roland McGrath
7d375303f2 Add comments about non-Linux use of bits/mman-linux.h. 2014-03-18 14:58:15 -07:00
Roland McGrath
0283ecca51 Move bits/mman-linux.h out of sysdeps/unix/sysv/linux/.
This way, non-Linux ports using the Linux values for bits/mman.h
constants need not duplicate the header.
2014-03-18 14:48:09 -07:00
Adhemerval Zanella
aebe100329 Add stardard definition on conform processing
This patch adds the -std=c99 option when preprocessing the data files
from the conform testcases. It fixes an issue where the compiler may
split the 'macro bool' defition from stdbool.h-data in two lines and
thus breaking the conform script.
2014-03-18 13:55:48 -05:00
Joseph Myers
b29b6bb8fe Test scalbn and scalbln in all rounding modes, add more tests of negative arguments.
Continuing the move to systematically testing libm functions in all
rounding modes with ALL_RM_TEST, this patch converts the tests of
scalbn and scalbln to use that macro.

Those tests include cases of underflow and overflow, meaning the
expected results depend on the rounding mode.  For convenience in
writing such tests manually, the patch adds the notation plus_oflow,
minus_oflow, plus_uflow and minus_uflow for overflowing / underflowing
results of each sign appropriate to the rounding mode being used, and
gen-libm-test.pl is made to substitute in the appropriate values.  The
tests of underflow and overflow are extended to include negative
arguments to provide better coverage (otherwise minus_oflow and
minus_uflow wouldn't have been used at all).

(A subsequent patch will make ldexp use the scalbn tests, as those
functions are equivalent for binary floating point.)

Tested x86_64 and x86.

	* math/gen-libm-test.pl (parse_args): Handle plus_oflow,
	minus_oflow, plus_uflow and minus_uflow in expected results.
	* math/libm-test.inc (scalbn_test_data): Add more tests of
	negative arguments.  Use plus_oflow, minus_oflow, plus_uflow and
	minus_uflow.
	(scalbn_test): Use ALL_RM_TEST.
	(scalbln_test_data): Add more tests of negative arguments.  Use
	plus_oflow, minus_oflow, plus_uflow and minus_uflow.
	(scalbln_test): Use ALL_RM_TEST.
2014-03-18 18:47:46 +00:00
Roland McGrath
c8f8fa1504 Work around binutils bugs in 2.23 and older
binutils versions up through at least 2.23 have some bugs that cause
STV_HIDDEN symbols to appear in .dynsyms.
2014-03-18 22:04:04 +05:30
Serge Hallyn
fdbe8eae2b misc/sys/xattr.h: guard against linux uapi header inclusion
If the glibc xattr.h header is included after the uapi header,
compilation fails due to an enum re-using a #define from the
uapi header.  Protect against this by guarding the define and
enum inclusions against each other.

(A corresponding kernel patch has been sent here:
http://lkml.org/lkml/2014/3/7/331 )

(See https://lists.debian.org/debian-glibc/2014/03/msg00029.html
and https://sourceware.org/glibc/wiki/Synchronizing_Headers
for more information.)

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
2014-03-18 14:27:56 +01:00
Will Newton
fede7a5ffa aarch64: Remove inaccurate comment from sysdep.h
This comment appears to have been copied from the ARM port where it
makes more sense.

2014-03-18  Will Newton  <will.newton@linaro.org>

	* sysdeps/unix/sysv/linux/aarch64/sysdep.h: Remove
	inaccurate comment.
2014-03-18 11:50:39 +00:00
Joseph Myers
80cf0a583d Exit with error status on check-abi failure.
* Makerules [!subdir] (check-abi): Exit with error status if a
	test failed.
2014-03-18 00:05:28 +00:00
Joseph Myers
b36208627c Test rint and nearbyint with same inputs, in all rounding modes.
This patch arranges for rint and nearbyint to be tested by
libm-test.inc with the same inputs (previously each had some test
inputs the other didn't, although there was a lot of overlap as well),
and for nearbyint to be tested in all rounding modes where previously
it was only tested in round-to-nearest mode.  The expected results are
the same for each function, except that rint is expected to have
"inexact" exceptions for non-integer input and nearbyint is expected
not to have those exceptions.

Tested x86_64 and x86.

	* math/libm-test.inc (nearbyint_test_data): Include all tests used
	for rint.  Include results for all rounding modes.
	(nearbyint_test): Use ALL_RM_TEST.
	(rint_test_data): Include all tests used for nearbyint.
2014-03-17 21:18:18 +00:00
Will Newton
04ec140a2e Revert "Fix __PTHREAD_MUTEX_HAVE_ELISION -Wundef warning"
This reverts commit 788bba368c.
2014-03-17 20:40:33 +00:00
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
c15cf13a8a Revert "Fix _IO_JUMPS_OFFSET -Wundef warnings"
This reverts commit f7efd7c3df.
2014-03-17 20:37:42 +00:00
Will Newton
d0ac132472 Revert "Fix HAVE_RM_CTX -Wundef warnings"
This reverts commit 9290130a8d.
2014-03-17 20:36:06 +00:00
Will Newton
9290130a8d Fix HAVE_RM_CTX -Wundef warnings
ChangeLog:

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

	* sysdeps/generic/math_private.h: Check whether
	HAVE_RM_CTX is defined with #ifdef rather
	than #if.
2014-03-17 16:05:24 +00:00
Will Newton
afb466fcb0 Fix __STRICT_ANSI__ -Wundef warnings
ChangeLog:

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

	* argp/argp-fmtstream.h: Check whether
	__STRICT_ANSI__ is defined with #ifdef rather
	than #if.
	* argp/argp.h: Likewise.
2014-03-17 16:05:23 +00:00
Will Newton
f7efd7c3df Fix _IO_JUMPS_OFFSET -Wundef warnings
ChangeLog:

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

	* libio/genops.c: Check whether
	_IO_JUMPS_OFFSET is defined with #ifdef rather
	than #if.
	* libio/libioP.h: Likewise.
	* stdio-common/vfprintf.c: Likewise.
2014-03-17 16:05:23 +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
Will Newton
788bba368c Fix __PTHREAD_MUTEX_HAVE_ELISION -Wundef warning
ChangeLog:

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

	* nptl/sysdeps/pthread/pthread.h: Check
	__PTHREAD_MUTEX_HAVE_ELISION is defined before testing
	its value.
2014-03-17 16:05:22 +00:00
Siddhesh Poyarekar
ae42bbc55a Change offset in fdopen only if setting O_APPEND
fdopen should only be allowed to change the offset in the file it
attaches to if it is setting O_APPEND.  If O_APPEND is already set, it
should not change the state of the handle.
2014-03-17 21:24:02 +05:30
Siddhesh Poyarekar
ea33158c96 Fix offset caching for streams and use it for ftell (BZ #16680)
The ftell implementation was made conservative to ensure that
incorrectly cached offsets never affect it.  However, this causes
problems for append mode when a file stream is rewound.  Additionally,
the 'clever' trick of using stat to get position for append mode files
caused more problems than it solved and broke old behavior.  I have
described the various problems that it caused and then finally the
solution.

For a and a+ mode files, rewinding the stream should result in ftell
returning 0 as the offset, but the stat() trick caused it to
(incorrectly) always return the end of file.  Now I couldn't find
anything in POSIX that specifies the stream position after rewind()
for a file opened in 'a' mode, but for 'a+' mode it should be set to
0.  For 'a' mode too, it probably makes sense to keep it set to 0 in
the interest of retaining old behavior.

The initial file position for append mode files is implementation
defined, so the implementation could either retain the current file
position or move the position to the end of file.  The earlier ftell
implementation would move the offset to end of file for append-only
mode, but retain the old offset for a+ mode.  It would also cache the
offset (this detail is important).  My patch broke this and would set
the initial position to end of file for both append modes, thus
breaking old behavior.  I was ignorant enough to write an incorrect
test case for it too.

The Change:

I have now brought back the behavior of seeking to end of file for
append-only streams, but with a slight difference.  I don't cache the
offset though, since we would want ftell to query the current file
position through lseek while the stream is not active.  Since the
offset is moved to the end of file, we can rely on the file position
reported by lseek and we don't need to resort to the stat() nonsense.

Finally, the cache is always reliable, except when there are unflished
writes in an append mode stream (i.e. both a and a+).  In the latter
case, it is safe to just do an lseek to SEEK_END.  The value can be
safely cached too, since the file handle is already active at this
point.  Incidentally, this is the only state change we affect in the
file handle (apart from taking locks of course).

I have also updated the test case to correct my impression of the
initial file position for a+ streams to the initial behavior.  I have
verified that this does not break any existing tests in the testsuite
and also passes with the new tests.
2014-03-17 21:23:56 +05:30
Siddhesh Poyarekar
b1dbb426e1 Fix up return codes for tests in tst-ftell-active-handler
The test functions used a variable ret to store failure codes for
individual tests, but the variable was incorrectly used to record
other failure codes too, resulting in overwriting of the tests status.
This is now fixed by making sure that the ret variable is used only
for recording test failures.

	* libio/tst-ftell-active-handler.c (do_ftell_test): Don't mix
	up test status with function return status.
	(do_write_test): Likewise.
	(do_append_test): Likewise.
2014-03-17 19:44:51 +05:30
Siddhesh Poyarekar
fcd89ebe4f Get rid of __LT_SPINLOCK_INIT
We got rid of LinuxThreads in 2005, but we didn't remove
__LT_SPINLOCK_INIT back then.  Do it now.

	* nptl/sysdeps/pthread/bits/libc-lockP.h [defined NOT_IN_libc
	&& !defined IS_IN_libpthread && __LT_SPINNOCK_INIT != 0]:
	Remove.
2014-03-17 19:35:11 +05:30
Joseph Myers
9962a2d34e Add libm-test support for per-rounding-mode manually specified results.
This patch continues the libm-test move towards automatic testing of
all test inputs in all rounding modes by adding gen-libm-test.pl
support for tests specifying results in each rounding mode manually.

Previously a TEST_* line could specify arguments and results, or
arguments, results and flags.  Now there is the option of (arguments,
results-rd, flags-rd, results-rn, flags-rn, results-rz, flags-rz,
results-ru, flags-ru).  This is used to replace the separate arrays of
results in each rounding mode for lrint, llrint and rint.  (In the
case of rint, some tests were only in rint_test_data and needed to
have expectations for non-default rounding modes added, which I did
manually.  In various cases there were slight differences in things
such as the ordering of tests in the arrays for each mode.)

Tested x86_64 and x86.

	* math/gen-libm-test.pl (parse_args): Handle results specified for
	each rounding mode separately.
	* math/libm-test.inc (lrint_test_data): Merge in per-rounding-mode
	tests and results from lrint_tonearest_test_data,
	lrint_towardzero_test_data, lrint_downward_test_data and
	lrint_upward_test_data.
	(lrint_test): Use ALL_RM_TEST.
	(lrint_tonearest_test_data): Remove.
	(lrint_test_tonearest): Likewise.
	(lrint_towardzero_test_data): Likewise.
	(lrint_test_towardzero): Likewise.
	(lrint_downward_test_data): Likewise.
	(lrint_test_downward): Likewise.
	(lrint_upward_test_data): Likewise.
	(lrint_test_upward): Likewise.
	(llrint_test_data): Merge in per-rounding-mode tests and results
	from llrint_tonearest_test_data, llrint_towardzero_test_data,
	llrint_downward_test_data and llrint_upward_test_data.
	(llrint_test): Use ALL_RM_TEST.
	(llrint_tonearest_test_data): Remove.
	(llrint_test_tonearest): Likewise.
	(llrint_towardzero_test_data): Likewise.
	(llrint_test_towardzero): Likewise.
	(llrint_downward_test_data): Likewise.
	(llrint_test_downward): Likewise.
	(llrint_upward_test_data): Likewise.
	(llrint_test_upward): Likewise.
	(rint_test_data): Merge in per-rounding-mode tests and results
	from rint_tonearest_test_data, rint_towardzero_test_data,
	rint_downward_test_data and rint_upward_test_data.  Add
	per-rounding-mode results for tests not in those arrays.
	(rint_test): Use ALL_RM_TEST.
	(rint_tonearest_test_data): Remove.
	(rint_test_tonearest): Likewise.
	(rint_towardzero_test_data): Likewise.
	(rint_test_towardzero): Likewise.
	(rint_downward_test_data): Likewise.
	(rint_test_downward): Likewise.
	(rint_upward_test_data): Likewise.
	(rint_test_upward): Likewise.
	(main): Don't call removed functions.
2014-03-17 12:29:26 +00:00
Roland McGrath
5006148ee5 Remove "Compiled on ..." crapola from version text. 2014-03-14 16:05:31 -07:00
Joseph Myers
d6fe5e582d Do not terminate default test runs on test failure.
This patch is an updated version of
<https://sourceware.org/ml/libc-alpha/2014-01/msg00198.html> and
<https://sourceware.org/ml/libc-alpha/2014-03/msg00180.html>.

Normal practice for software testsuites is that rather than
terminating immediately when a test fails, they continue running and
report at the end on how many tests passed or failed.

The principle behind the glibc testsuite stopping on failure was
probably that the expected state is no failures and so any failure
indicates a problem such as miscompilation.  In practice, while this
is fairly close to true for native testing on x86_64 and x86 (kernel
bugs and race conditions can still cause intermittent failures), it's
less likely to be the case on other platforms, and so people testing
glibc run the testsuite with "make -k" and then examine the logs to
determine whether the failures are what they expect to fail on that
platform, possibly with some automation for the comparison.

This patch switches the glibc testsuite to the normal convention of
not stopping on failure - unless you use stop-on-test-failure=y, in
which case it behaves essentially as it did before (and does not
generate overall test summaries on failure).  Instead, the summary
tests.sum may contain tests that FAILed.  At the end of the test run,
any FAIL or ERROR lines from tests.sum are printed, and then it exits
with error status if there were any such lines.  In addition, build
failures will also cause the test run to stop - this has the
justification that those *do* indicate serious problems that should be
promptly fixed and aren't generally hard to fix (but apart from that,
avoiding the build stopping on those failures seems harder).

Note that unlike the previous patches in this series, this *does*
require people with automation around testing glibc to change their
processes - either to start using tests.sum / xtests.sum to track
failures and compare them with expectations (with or without also
using "make -k" and examining "make" logs to identify build failures),
or else to use stop-on-test-failure=y and ignore the new tests.sum /
xtests.sum mechanism.  (If all you check is the exit status from "make
check", no changes are needed unless you want to avoid test runs
continuing after the first failure.)

Tested x86_64.

	* scripts/evaluate-test.sh: Handle fourth argument to determine
	whether test run should stop on failure.
	* Makeconfig (stop-on-test-failure): New variable.
	(evaluate-test): Pass fourth argument to evaluate-test.sh based on
	$(stop-on-test-failure).
	* Makefile (tests): Give a summary of results from testing and
	exit with failure status if they include an ERROR or FAIL.
	(xtests): Likewise.
	* manual/install.texi (Configuring and compiling): Mention
	stop-on-test-failure=y.
	* INSTALL: Regenerated.
2014-03-14 21:02:40 +00:00
Roland McGrath
22dbc19dbb Get rid of Versions.def source file 2014-03-14 11:39:56 -07:00
Roland McGrath
498a22333b Compile with -Wundef. 2014-03-14 11:32:51 -07:00
Adhemerval Zanella
c7de502503 PowerPC: remove wrong roundl implementation for PowerPC64
The roundl assembly implementation
(sysdeps/powerpc/powerpc64/fpu/s_roundl.S)
returns wrong results for some inputs where first double is a exact
integer and the precision is determined by second long double.

Checking on implementation comments and history, I am very confident the
assembly implementation was based on a version before commit
5c68d40169 that fixes BZ#2423 (Errors in
long double (ldbl-128ibm) rounding functions in glibc-2.4).

By just removing the implementation and make the build select
sysdeps/ieee754/ldbl-128ibm/s_roundl.c instead fixes the failing math.

This fixes 16707.
2014-03-14 12:54:47 -05:00
Adhemerval Zanella
98fb27a373 PowerPC: remove wrong nearbyintl implementation for PPC64
The nearbyintl assembly implementation
(sysdeps/powerpc/powerpc64/fpu/s_nearbyintl.S)
returns wrong results for some inputs where first double is a exact
integer and the precision is determined by second long double.

Checking on implementation comments and history, I am very confident the
assembly implementation was based on a version before commit
5c68d40169 that fixes BZ#2423 (Errors in
long double (ldbl-128ibm) rounding functions in glibc-2.4).

By just removing the implementation and make the build select
sysdeps/ieee754/ldbl-128ibm/s_nearbyintl.c instead fixes the failing
math.

Fixes BZ#16706.
2014-03-14 12:54:47 -05:00
Adhemerval Zanella
374f7f6121 PowerPC: remove wrong ceill implementation for PowerPC64
The ceill assembly implementation (sysdeps/powerpc/powerpc64/fpu/s_ceill.S)
returns wrong results for some inputs where first double is a exact
integer and the precision is determined by second long double.

Checking on implementation comments and history, I am very confident the
assembly implementation was based on a version before commit
5c68d40169 that fixes BZ#2423 (Errors in
long double (ldbl-128ibm) rounding functions in glibc-2.4).

By just removing the implementation and make the build select
sysdeps/ieee754/ldbl-128ibm/s_ceill.c instead fixes the failing math.

Fixes BZ#16701.
2014-03-14 12:54:47 -05:00
Adhemerval Zanella
4655c291d1 Add truncl tests related to BZ#16414 2014-03-14 12:54:47 -05:00
Roland McGrath
d7329d4b4d Fix two stray cases using #ifdef vs #if for TLS_TCB_AT_TP. 2014-03-14 10:46:38 -07:00
H.J. Lu
aa4de9cea5 Check AVX-512 assembler support first
It checks AVX-512 assembler support first and sets libc_cv_cc_avx512 to
$libc_cv_asm_avx512, instead of yes.  GCC won't support AVX-512 if
assembler doesn't support it.

	* sysdeps/x86_64/configure.ac: Check AVX-512 assembler support
	first.  Disable AVX-512 GCC support if assembler doesn't support
	it.
	* sysdeps/x86_64/configure: Regenerated.
2014-03-14 08:51:25 -07:00
Carlos O'Donell
2e03fae7b7 hppa: Add _STACK_GROWS_* cases to pthread_attr_[sg]etstack.
This is one of a several NPTL patches to build glibc on hppa.

The pthread_attr_[sg]etstack functions are defined by POSIX as
taking a stackaddr that is the lowest addressable byte of the
storage used for the stack. However, the internal iattr variable
of the same name in NPTL is actually the final stack address
as usable in the stack pointer for the machine. Therefore the
NPTL implementation must add and subtract stacksize for
_STACK_GROWS_DOWN architectures. HPPA is a _STACK_GROWS_UP
architecture and doesn't need to add or subtract anything,
the stack address *is* the lowest addressable byte of the
storage.

Tested on hppa-linux-gnu, with no regressions.

Can't impact any other targets because of the conditionals.

If nobody objects I'll check this in at the end of the week.

I can't see there being any objections to this patch except
that it introduces more code to maintain for an old architecture
(perhaps we'll get another _S_G_U target in the future?).
2014-03-13 20:38:27 -04:00
Mike Frysinger
43ca83ecc4 stop supporting bash-1.x
We've stopped supporting toolchain packages older than 2009, so punting
bash-1.x is reasonable when bash-2 was released almost 20 years ago.
2014-03-13 20:20:12 -04:00
Mike Frysinger
c66e48b4a7 delete ksh checks
Nothing in the tree uses ksh anymore, so punt these checks.
2014-03-13 20:03:31 -04:00
Mike Frysinger
b93834ef81 sotruss: drop ksh support and add basic POSIX shell support
This script works fine under bash as-is, so we don't need ksh anymore.

Once we tweak the function style, the code even works (for the most part)
under a POSIX shell.  The localized strings will be prepended with a $,
but it is otherwise functional.
2014-03-13 19:56:01 -04:00
Mike Frysinger
f3a4632a3f manual: time: fix typo in IST example
The current description says Tuesday when it meant to say Thursday
(since that comes before Friday).
2014-03-13 18:31:09 -04:00
Mike Frysinger
5896c8bdd9 tst-longjmp_chk2: add comments/sanity check
If the longjmp checking code is slightly broken, this code can loop
forever which isn't too helpful.  Add a sanity check to keep that
from happening.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2014-03-13 17:05:29 -04:00
Igor Zamyatin
2d63a517e4 Save and restore AVX-512 zmm registers to x86-64 ld.so
AVX-512 ISA adds 512-bit zmm registers.  This patch updates
_dl_runtime_profile to pass zmm registers to run-time audit. It also
changes _dl_x86_64_save_sse and _dl_x86_64_restore_sse to upport zmm
registers, which are called when only when RTLD_PREPARE_FOREIGN_CALL
is used.  Its performance impact is minimum.

	* config.h.in (HAVE_AVX512_SUPPORT): New #undef.
	(HAVE_AVX512_ASM_SUPPORT): Likewise.
	* sysdeps/x86_64/bits/link.h (La_x86_64_zmm): New.
	(La_x86_64_vector): Add zmm.
	* sysdeps/x86_64/Makefile (tests): Add tst-audit10.
	(modules-names): Add tst-auditmod10a and tst-auditmod10b.
	($(objpfx)tst-audit10): New target.
	($(objpfx)tst-audit10.out): Likewise.
	(tst-audit10-ENV): New.
	(AVX512-CFLAGS): Likewise.
	(CFLAGS-tst-audit10.c): Likewise.
	(CFLAGS-tst-auditmod10a.c): Likewise.
	(CFLAGS-tst-auditmod10b.c): Likewise.
	* sysdeps/x86_64/configure.ac: Set config-cflags-avx512,
	HAVE_AVX512_SUPPORT and HAVE_AVX512_ASM_SUPPORT.
	* sysdeps/x86_64/configure: Regenerated.
	* sysdeps/x86_64/dl-trampoline.S (_dl_runtime_profile): Add
	AVX-512 zmm register support.
	(_dl_x86_64_save_sse): Likewise.
	(_dl_x86_64_restore_sse): Likewise.
	* sysdeps/x86_64/dl-trampoline.h: Updated to support different
	size vector registers.
	* sysdeps/x86_64/link-defines.sym (YMM_SIZE): New.
	(ZMM_SIZE): Likewise.
	* sysdeps/x86_64/tst-audit10.c: New file.
	* sysdeps/x86_64/tst-auditmod10a.c: Likewise.
	* sysdeps/x86_64/tst-auditmod10b.c: Likewise.
2014-03-13 11:19:08 -07:00