Adjust how gen-auto-libm-tests handles before-rounding/after-rounding cases.

This patch changes gen-auto-libm-tests so that, when generating test
results that depend on whether the architecture has before-rounding or
after-rounding tininess detection, the :before-rounding or
:after-rounding conditions go on the exception / errno flags
generated, rather than generating two separate lines in
auto-libm-test-out for e.g. flt-32:before-rounding and
flt-32:after-rounding.

The rationale for this is as follows.  It would be desirable for
testing a libm function in all rounding modes to require just one
function and array in libm-test.inc, not four (or five), with the
array of test data including expected results for all rounding modes
rather than separate arrays for each rounding mode that also need to
repeat all the test inputs.  For gen-libm-test.pl to generate data for
such an array from auto-libm-test-out, it would be helpful if each
(format, test input) pair has exactly four lines in
auto-libm-test-out, one for each rounding mode, rather than some
rounding modes having just one line and some having two because the
exceptions depend on tininess detection.

Tested x86_64 and x86.

	* math/gen-auto-libm-tests.c: Update comment on output format.
	(output_for_one_input_case): Generate before-rounding and
	after-rounding information as conditions on output flags not
	floating-point format.
	* math/auto-libm-test-out: Regenerated.
	* math/gen-libm-test.pl (cond_value): New function.
	(or_cond_value): Use cond_value.
	(generate_testfile): Handle conditional exceptions.
Don't define __ASSUME_UTIMES for linux-generic architectures.

The __ASSUME_UTIMES macro describes whether the utimes syscall is
present.  For linux-generic architectures, it isn't (utimensat is
instead), so the macro should not be defined for them; this patch
removes the spurious definitions for such architectures.  (Those
definitions don't actually cause any user-visible bug, because
futimes.c doesn't use __ASSUME_UTIMES if __ASSUME_UTIMENSAT is
defined, and futimesat.c and utimes.c are overridden for
linux-generic, but the definitions are still logically incorrect.)

	* sysdeps/unix/sysv/linux/aarch64/kernel-features.h
	(__ASSUME_UTIMES): Remove.
	* sysdeps/unix/sysv/linux/tile/kernel-features.h
	(__ASSUME_UTIMES): Likewise.
Prepare libm-test.inc structures for multi-rounding-mode testing.

At present, libm-test.inc tests are run in multiple rounding modes by
having a separate array for each rounding mode (which might or might
not have the same test inputs as the other such arrays), a separate
function calling a RUN_TEST_LOOP_* macro over that array, and a
separate call to that function in main.  The number of functions
tested in multiple rounding modes has gradually increased as
rounding-mode-specific bugs have been found and fixed in different
functions.

It would be better to be able to use a single macro call, in a single
function, to run tests for a function over all rounding modes, with
this being done for all libm functions except in cases where it's
deferred until some bugs can be fixed because XFAILing all affected
tests would be painful (that's why the full set of pow tests isn't
currently run in all rounding modes).  This patch helps prepare for
that by making the structures storing expected results for tests store
results for all four rounding modes.  After this patch, the results
for all modes are just duplicates, but tests access the appropriate
field in the structure, so helping to pave the way for when the fields
stop being duplicates and multiple rounding modes can be tested from a
single array.  Tests might in future specify a single set of results,
to be used in all rounding modes; separate results for each rounding
mode, specified manually; or use of auto-libm-tests-* to generate
results for each rounding mode.

Tested x86_64.

	* math/libm-test.inc (struct test_f_f_data): Move expected results
	into structure for each rounding mode.
	(struct test_ff_f_data): Likewise.
	(struct test_ff_f_data_nexttoward): Likewise.
	(struct test_fi_f_data): Likewise.
	(struct test_fl_f_data): Likewise.
	(struct test_if_f_data): Likewise.
	(struct test_fff_f_data): Likewise.
	(struct test_c_f_data): Likewise.
	(struct test_f_f1_data): Likewise.
	(struct test_fF_f1_data): Likewise.
	(struct test_ffI_f1_data): Likewise.
	(struct test_c_c_data): Likewise.
	(struct test_cc_c_data): Likewise.
	(struct test_f_i_data): Likewise.
	(struct test_ff_i_data): Likewise.
	(struct test_f_l_data): Likewise.
	(struct test_f_L_data): Likewise.
	(struct test_fFF_11_data): Likewise.
	(RM_): New macro.
	(RM_FE_DOWNWARD): Likewise.
	(RM_FE_TONEAREST): Likewise.
	(RM_FE_TOWARDZERO): Likewise.
	(RM_FE_UPWARD): Likewise.
	(RUN_TEST_LOOP_f_f): Update references to expected results.
	(RUN_TEST_LOOP_2_f): Likewise.
	(RUN_TEST_LOOP_fff_f): Likewise.
	(RUN_TEST_LOOP_c_f): Likewise.
	(RUN_TEST_LOOP_f_f1): Likewise.
	(RUN_TEST_LOOP_fF_f1): Likewise.
	(RUN_TEST_LOOP_fI_f1): Likewise.
	(RUN_TEST_LOOP_ffI_f1): Likewise.
	(RUN_TEST_LOOP_c_c): Likewise.
	(RUN_TEST_LOOP_cc_c): Likewise.
	(RUN_TEST_LOOP_f_i): Likewise.
	(RUN_TEST_LOOP_f_i_tg): Likewise.
	(RUN_TEST_LOOP_ff_i_tg): Likewise.
	(RUN_TEST_LOOP_f_b): Likewise.
	(RUN_TEST_LOOP_f_b_tg): Likewise.
	(RUN_TEST_LOOP_f_l): Likewise.
	(RUN_TEST_LOOP_f_L): Likewise.
	(RUN_TEST_LOOP_fFF_11): Likewise.
	* math/gen-libm-test.pl (parse_args): Output four copies of
	expected results for each test.
Remove INSTALL_INFO setting in manual/Makefile.

	* manual/Makefile (INSTALL_INFO): Remove variable setting.
conformtest: correct set of standards for which some headers are tested.

Reviewing the sets of headers for which conformtest has expectations
for various standards showed up cases where headers had expectations
for standards not including those headers, or were missing
expectations for a standard that did include the header.  This patch
fixes easy cases of this (largely disabling tests for standards for
which they are inapplicable).  Tested x86_64.

	* conform/data/aio.h-data [XPG3 || XPG4]: Disable whole file.
	* conform/data/arpa/inet.h-data [XPG3]: Likewise.
	* conform/data/dlfcn.h-data [XPG3 || XPG4]: Likewise.
	* conform/data/fmtmsg.h-data [XPG3]: Likewise.
	* conform/data/libgen.h-data [XPG3]: Likewise.
	* conform/data/mqueue.h-data [XPG3 || XPG4]: Likewise.
	* conform/data/ndbm.h-data [XPG3]: Likewise.
	* conform/data/net/if.h-data [XPG3 || XPG4 || UNIX98]: Likewise.
	* conform/data/netdb.h-data [XPG3]: Likewise.
	* conform/data/netinet/in.h-data [XPG3]: Likewise.
	* conform/data/poll.h-data [XPG3]: Likewise.
	* conform/data/spawn.h-data [XPG3 || XPG4 || UNIX98]: Likewise.
	* conform/data/strings.h-data [XPG3]: Likewise.
	* conform/data/stropts.h-data [XPG3]: Likewise.
	* conform/data/sys/mman.h-data [XPG3]: Likewise.
	* conform/data/sys/resource.h-data [XPG3]: Likewise.
	* conform/data/sys/select.h-data [XPG3 || XPG4 || UNIX98]:
	Likewise.
	* conform/data/sys/statvfs.h-data [XPG3]: Likewise.
	* conform/data/sys/time.h-data [XPG3]: Likewise.
	* conform/data/sys/timeb.h-data [XPG3]: Likewise.
	* conform/data/sys/uio.h-data [XPG3]: Likewise.
	* conform/data/sys/un.h-data [XPG3]: Likewise.
	* conform/data/syslog.h-data [XPG3]: Likewise.
	* conform/data/ucontext.h-data [XPG3]: Likewise.
	* conform/data/utmpx.h-data [XPG3]: Likewise.
	* conform/data/varargs.h-data [UNIX98]: Enable file.
conformtest: correct set of standards for which more headers are tested.

Continuing the corrections to which headers conformtest tests for
which standards, this patch corrects conformtest mistakes regarding
which headers to test for the remaining standards (XOPEN2K POSIX2008
XOPEN2K8).  Tested x86_64.

2014-03-05  Joseph Myers  <joseph@codesourcery.com>

	* conform/data/netinet/tcp.h-data [POSIX2008 || XOPEN2K8]: Enable
	whole file.
	* conform/data/sys/timeb.h-data [POSIX2008 || XOPEN2K8]: Disable
	whole file.
	* conform/data/sys/uio.h-data [POSIX2008]: Likewise.
	* conform/data/ucontext.h-data [POSIX2008 || XOPEN2K8]: Likewise.
Enumerate tests with special rules in tests-special variable.

This patch is a revised and updated version of
<https://sourceware.org/ml/libc-alpha/2014-01/msg00196.html>.

In order to generate overall summaries of the results of all tests in
the glibc testsuite, we need to identify and concatenate the files
with the results of individual tests.

Tomas Dohnalek's patch used $(common-objpfx)*/*.test-result for this.
However, the normal glibc approach is explicit enumeration of the
expected set of files with a given property, rather than all files
matching some pattern like that.  Furthermore, we would like to be
able to mark tests as UNRESOLVED if the file with their results is for
some reason missing, and in future we would like to be able to mark
tests as UNSUPPORTED if they are disabled for a particular
configuration (rather than simply having them missing from the list of
tests as at present).  Such handling of tests that were not run or did
not record results requires an explicit enumeration of tests.

For the tests following the default makefile rules, $(tests) (and
$(xtests)) provides such an enumeration.  Others, however, are added
directly as dependencies of the "tests" and "xtests" makefile
targets.  This patch changes the makefiles to put them in variables
tests-special and xtests-special, with appropriate dependencies on the
tests listed there then being added centrally.

Those variables are used in Rules and so need to be set before Rules
is included in a subdirectory makefile, which is often earlier in the
makefile than the dependencies were present before.  We previously
discussed the question of where to include Rules; see the question at
<https://sourceware.org/ml/libc-alpha/2012-11/msg00798.html>, and a
discussion in
<https://sourceware.org/ml/libc-alpha/2013-01/msg00337.html> of why
Rules is included early rather than late in subdirectory makefiles.

It was necessary to avoid an indirection through the check-abi target
and get the check-abi-* targets for individual libraries into the
tests-special variable.  The intl/ test $(objpfx)tst-gettext.out,
previously built only because of dependencies from other tests, was
also added to tests-special for the same reason.

The entries in tests-special are the full makefile targets, complete
with $(objpfx) and .out.  If a future change causes tests to be named
consistently with a .out suffix, this can be changed to include just
the path relative to $(objpfx), without .out.

Tested x86_64, including that the same set of files is generated in
the build directory by a build and testsuite run both before and after
the patch (except for changes to the
elf/tst-null-argv.debug.out.<number> file name), and a build with
run-built-tests=no to verify there aren't any more obvious instances
of the issue Marcus Shawcroft reported with a previous version in
<https://sourceware.org/ml/libc-alpha/2014-01/msg00462.html>.

	* Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(tests): Depend on $(tests-special).
	* Makerules (check-abi-list): New variable.
	(check-abi): Depend on $(check-abi-list).
	[$(subdir) = elf] (tests-special): Add
	$(objpfx)check-abi-libc.out.
	[$(build-shared) = yes && subdir] (tests-special): Add
	$(check-abi-list).
	[$(build-shared) = yes && subdir] (tests): Do not depend on
	check-abi.
	* Rules (tests): Depend on $(tests-special).
	(xtests): Depend on $(xtests-special).
	* catgets/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* conform/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* elf/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* grp/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* iconv/Makefile (xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* iconvdata/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* intl/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.  Also add
	$(objpfx)tst-gettext.out.
	* io/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* libio/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* malloc/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* misc/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* nptl/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* nptl_db/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* posix/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* resolv/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(xtests): Change dependencies to ....
	(xtests-special): ... additions to this variable.
	* stdio-common/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	(do-tst-unbputc): Remove target.
	(do-tst-printf): Likewise.
	* stdlib/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* string/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.
	* sysdeps/x86/Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.

localedata:
	* Makefile (tests): Change dependencies to ....
	(tests-special): ... additions to this variable.