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* powerpc: Add optimized llogb* for POWER9Raphael Moreira Zinsly2021-03-162-0/+43
| | | | | The POWER9 builtins used to improve the ilogb* functions can be used in the llogb* functions as well.
* powerpc: Add optimized ilogb* for POWER9Raphael Moreira Zinsly2021-03-163-1/+59
| | | | | | The instructions xsxexpdp and xsxexpqp introduced on POWER9 extract the exponent from a double-precision and quad-precision floating-point respectively, thus they can be used to improve ilogb, ilogbf and ilogbf128.
* Legacy unwinder: Remove definition of _Unwind_GetCFAFlorian Weimer2021-03-161-8/+0
| | | | | | | | It is not actually used by the legacy unwinder linked into libc.so, and it conflicts with the unwind-link functionality in libpthread. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* powerpc: Update libm-test-ulpsMatheus Castanho2021-03-161-1/+1
| | | | | | Generated with 'make regen-ulps' on POWER8. Tested on powerpc, powerpc64, and powerpc64le
* Build get-cpuid-feature-leaf.c without stack-protector [BZ #27555]Siddhesh Poyarekar2021-03-152-0/+4
| | | | | | | | | | | | | | | __x86_get_cpuid_feature_leaf is called during early startup, before the stack check guard is initialized and is hence not safe to build with stack-protector. Additionally, IFUNC resolvers for static tst-ifunc-isa tests get called too early for stack protector to be useful, so fix them to disable stack protector for the resolver functions. This fixes all failures seen with --enable-stack-protector=all configuration. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* x86: Handle _SC_LEVEL1_ICACHE_LINESIZE [BZ #27444]H.J. Lu2021-03-157-0/+79
| | | | | | | | | | | | | | | | | commit 2d651eb9265d1366d7b9e881bfddd46db9c1ecc4 Author: H.J. Lu <hjl.tools@gmail.com> Date: Fri Sep 18 07:55:14 2020 -0700 x86: Move x86 processor cache info to cpu_features missed _SC_LEVEL1_ICACHE_LINESIZE. 1. Add level1_icache_linesize to struct cpu_features. 2. Initialize level1_icache_linesize by calling handle_intel, handle_zhaoxin and handle_amd with _SC_LEVEL1_ICACHE_LINESIZE. 3. Return level1_icache_linesize for _SC_LEVEL1_ICACHE_LINESIZE. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* s390x: Regenerate ULPs.Stefan Liebler2021-03-121-1/+3
| | | | | | | Updates needed after recent commit: db3f7bb5586392d9809fc6397c7184983aed6008 "math: Remove slow paths from asin and acos [BZ #15267]" Compre to the required ulps update for x86_64.
* nptl: Move fork into libcAdhemerval Zanella2021-03-1225-50/+0
| | | | | | | | This is part of the libpthread removal project: <https://sourceware.org/ml/libc-alpha/2019-10/msg00080.html> Checked on x86_64-linux-gnu.
* linux: Use __libc_single_threaded on forkAdhemerval Zanella2021-03-121-1/+2
| | | | Checked on x86_64-linux-gnu.
* posix: Consolidate register-atforkAdhemerval Zanella2021-03-125-81/+25
| | | | | | | | | | | | | Both htl and nptl uses a different data structure to implement atfork handlers. The nptl one was refactored by 27761a1042d to use a dynarray which simplifies the code. This patch moves the nptl one to be the generic implementation and replace Hurd linked one. Different than previous NPTL, Hurd also uses a global lock, so performance should be similar. Checked on x86_64-linux-gnu, i686-linux-gnu, and with a build for i686-gnu.
* nptl: Move Linux pthread_kill to nptlAdhemerval Zanella2021-03-121-57/+0
| | | | | | | The nptl already expects a Linux syscall internally. Also __is_internal_signal is used and the DEBUGGING_P check is removed. Checked on x86_64-linux-gnu.
* io: Return UNSUPPORTED if filesystem do not support 64 bit timestampsAdhemerval Zanella2021-03-123-3/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some Linux filesystems might not fully support 64 bit timestamps [1], which make some Linux specific tests to fail when they check for the functionality. This patch adds a new libsupport function, support_path_support_time64, that returns whether the target file supports or not 64 bit timestamps. The support is checked by issuing a utimensat and verifying both the last access and last modification time against a statx call. The tests that might fail are also adjusted to check the file support as well: $ dd if=/dev/zero of=loopbackfile.img bs=100M count=1 1+0 records in 1+0 records out 104857600 bytes (105 MB, 100 MiB) copied, 0,0589568 s, 1,8 GB/s $ sudo losetup -fP loopbackfile.img $ mkfs.xfs loopbackfile.img meta-data=loopbackfile.img isize=512 agcount=4, agsize=6400 blks = sectsz=512 attr=2, projid32bit=1 = crc=1 finobt=1, sparse=1, rmapbt=0 = reflink=1 data = bsize=4096 blocks=25600, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0, ftype=1 log =internal log bsize=4096 blocks=1368, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 $ mkdir loopfs $ sudo mount -o loop /dev/loop0 loopfs/ $ sudo chown -R azanella:azanella loopfs $ TMPDIR=loopfs/ ./testrun.sh misc/tst-utimes error: ../sysdeps/unix/sysv/linux/tst-utimes.c:55: File loopfs//utimesfECsK1 does not support 64-bit timestamps [1] https://bugzilla.redhat.com/show_bug.cgi?id=1795576
* math: Remove mpa files (part 2) [BZ #15267]Wilco Dijkstra2021-03-1115-2452/+0
| | | | | | | | | Previous commit was missing deleted files in sysdeps/ieee754/dbl-64. Finally remove all mpa related files, headers, declarations, probes, unused tables and update makefiles. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* math: Remove mpa files [BZ #15267]Wilco Dijkstra2021-03-1124-8012/+3
| | | | | | | Finally remove all mpa related files, headers, declarations, probes, unused tables and update makefiles. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* math: Remove slow paths from atan2 [BZ #15267]Wilco Dijkstra2021-03-112-294/+40
| | | | | | Remove slow paths from atan2. Add ULP annotations. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* math: Remove slow paths from atan [BZ #15267]Wilco Dijkstra2021-03-113-181/+27
| | | | | | Remove slow paths from atan. Add ULP annotations. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* math: Remove slow paths in tan [BZ #15267]Wilco Dijkstra2021-03-115-708/+81
| | | | | | | Remove slow paths in tan. Add ULP annotations. Merge 'number' into 'mynumber'. Remove unused entries from tan constants. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* math: Remove slow paths from asin and acos [BZ #15267]Wilco Dijkstra2021-03-113-300/+47
| | | | | | | | | | | This patch series removes all remaining slow paths and related code. First asin/acos, tan, atan, atan2 implementations are updated, and the final patch removes the unused mpa files, headers and probes. Passes buildmanyglibc. Remove slow paths from asin/acos. Add ULP annotations based on previous slow path checks (which are approximate). Update AArch64 and x86_64 libm-test-ulps. Reviewed-By: Paul Zimmermann <Paul.Zimmermann@inria.fr>
* io: Return EBAFD for negative file descriptor on fstat (BZ #27559)Adhemerval Zanella2021-03-112-0/+18
| | | | | | | | Now that fstat is implemented on top fstatat we need to handle negative inputs. The implementation now rejects AT_FDCWD, which would otherwise be accepted by the kernel. Checked on x86_64-linux-gnu and on i686-linux-gnu.
* Update kernel version to 5.11 in tst-mman-consts.py.Joseph Myers2021-03-101-1/+1
| | | | | | | | This patch updates the kernel version in the test tst-mman-consts.py to 5.11. (There are no new MAP_* constants covered by this test in 5.11 that need any other header changes.) Tested with build-many-glibcs.py.
* Linux: misc/tst-ofdlocks-compat can be a regular testFlorian Weimer2021-03-092-9/+7
| | | | | | | | Now that compat_symbol_reference works in non-internal tests. Also do not build and run the test at all on architectures which do not have the pre-2.28 symbol version of fcntl. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Linux: dirent/tst-readdir64-compat can be a regular testFlorian Weimer2021-03-092-6/+5
| | | | | | | | | | compat_symbol_reference works in non-internal tests now. Also avoid building the test for unsupported configurations at all. I verified by building with build-many-glibcs.py that GLIBC_2.1.3 works as the predecessor of GLIBC_2.2. (Symbol versions in the early days are complex.) Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nss: fix nss_database_lookup2's alternate handling [BZ #27416]DJ Delorie2021-03-091-3/+1
| | | | | | | | | | | | | | | | | | | | __nss_database_lookup2's extra arguments were left unused in the nsswitch reloading patch set; this broke compat (default config ignored) and shadow files (secondary name ignored) which relies on these fallbacks. This patch adds in the previous behavior by correcting the initialization of the database list to reflect the fallbacks. This means that the nss_database_lookup2 interface no longer needs to be passed the fallback info, so API and callers were adjusted. Since all callers needed to be edited anyway, the calls were changed from __nss_database_lookup2 to the faster __nss_database_get. This was an intended optimization which was deferred during the initial lookup changes to avoid touching so many files. The test case verifies that compat targets work (passwd) and that the default configuration works (group). Tested on x86-64.
* tst: Add test for ntp_adjtimeLukasz Majewski2021-03-082-1/+23
| | | | | | This test is a wrapper on tst-clock_adjtime test. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst: Add test for adjtimexLukasz Majewski2021-03-082-1/+23
| | | | | | This test is a wrapper on tst-clock_adjtime test. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst: Modify tst-clock_adjtime to allow reuse of its codeLukasz Majewski2021-03-081-1/+5
| | | | | | | The tst-clock_adjtime can be adjusted to be reused for also testing adjtimex. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst: Add test for clock_adjtimeLukasz Majewski2021-03-082-1/+59
| | | | | | | | | | | This code privides test to check if time on target machine is properly adjusted. The time is altered only when cross-test-ssh.sh is executed with --allow-time-setting flag. As the delta added to CLOCK_REALTIME is only 1 sec the original time is not restored and further tests are executed with this bias. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* Update hppa libm-test-ulpsJohn David Anglin2021-03-071-1/+3
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* x86: Set minimum x86-64 level marker [BZ #27318]H.J. Lu2021-03-063-11/+58
| | | | | | | | | | | | | | | | | | | Since the full ISA set used in an ELF binary is unknown to compiler, an x86-64 ISA level marker indicates the minimum, not maximum, ISA set required to run such an ELF binary. We never guarantee a library with an x86-64 ISA level v3 marker doesn't contain other ISAs beyond x86-64 ISA level v3, like AVX VNNI. We check the x86-64 ISA level marker for the minimum ISA set. Since -march=sandybridge enables only some ISAs in x86-64 ISA level v3, we should set the needed ISA marker to v2. Otherwise, libc is compiled with -march=sandybridge will fail to run on Sandy Bridge: $ ./elf/ld.so ./libc.so ./libc.so: (p) CPU ISA level is lower than required: needed: 7; got: 3 Set the minimum, instead of maximum, x86-64 ISA level marker should have no impact on the glibc-hwcaps directory assignment logic in ldconfig nor ld.so.
* linux: Fix __thrd_sleep64 hidden definitionAdhemerval Zanella2021-03-052-2/+2
| | | | The symbol is exported by libc.
* Update arm libm-test-ulpsAdhemerval Zanella2021-03-051-1/+3
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* Update sparc libm-test-ulpsAdhemerval Zanella2021-03-051-16/+18
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* [PATCH] pthread_once hangs when init routine throws an exception [BZ #18435]Jakub Jelinek2021-03-043-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is another attempt at making pthread_once handle throwing exceptions from the init routine callback. As the new testcases show, just switching to the cleanup attribute based cleanup does fix the tst-once5 test, but breaks the new tst-oncey3 test. That is because when throwing exceptions, only the unwind info registered cleanups (i.e. C++ destructors or cleanup attribute), when cancelling threads and there has been unwind info from the cancellation point up to whatever needs cleanup both unwind info registered cleanups and THREAD_SETMEM (self, cleanup, ...) registered cleanups are invoked, but once we hit some frame with no unwind info, only the THREAD_SETMEM (self, cleanup, ...) registered cleanups are invoked. So, to stay fully backwards compatible (allow init routines without unwind info which encounter cancellation points) and handle exception throwing we actually need to register the pthread_once cleanups in both unwind info and in the THREAD_SETMEM (self, cleanup, ...) way. If an exception is thrown, only the former will happen and we in that case need to also unregister the THREAD_SETMEM (self, cleanup, ...) registered handler, because otherwise after catching the exception the user code could call deeper into the stack some cancellation point, get cancelled and then a stale cleanup handler would clobber stack and probably crash. If a thread calling init routine is cancelled and unwind info ends before the pthread_once frame, it will be cleaned up through self->cleanup as before. And if unwind info is present, unwind_stop first calls the self->cleanup registered handler for the frame, then it will call the unwind info registered handler but that will already see __do_it == 0 and do nothing.
* powerpc: Regenerate ulpsFlorian Weimer2021-03-031-10/+10
| | | | This time on a POWER8 machine.
* s390x: Regenerate ulpsArjun Shankar2021-03-031-15/+17
| | | | For new test cases in commit 5a051454a9b5.
* tst: Fix tst-timerfd testLukasz Majewski2021-03-021-11/+4
| | | | | | | | | | | | | | | | | | | There were following problems discovered for tst-timerfd test: 1. Do not set the struct itimerspec's it_interval tv_sec to 2 seconds. After this change the timerfd will trigger only once (the it_value is only set in this case). 2. The 'val1' variable (including the call to timerfd_gettime) is not needed anymore, as it is just enough to read the struct itimerspec after sleep. As a consequence the 'val2' has been renamed to 'val'. 3. After calling timerfd_gettime, the value of struct itimerspec time, when timer is running, is the remaining time. In the case of this test it would be less than 1 second. As a result the TEST_COMPARE macro logic had to be adjusted. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* i386: Regenerate ulpsFlorian Weimer2021-03-022-46/+46
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* x86: Add CPU-specific diagnostics to ld.so --list-diagnosticsFlorian Weimer2021-03-022-0/+120
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* x86: Automate generation of PREFERRED_FEATURE_INDEX_1 bitfieldFlorian Weimer2021-03-022-34/+51
| | | | | Use a .def file to define the bitfield layout, so that it is possible to iterate over field members using the preprocessor.
* ld.so: Implement the --list-diagnostics optionFlorian Weimer2021-03-021-0/+77
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* powerpc: Update libm-test-ulpsMatheus Castanho2021-03-021-13/+15
| | | | | | Generated with 'make regen-ulps' Tested on powerpc, powerpc64, and powerpc64le
* tst: Add test for utimesLukasz Majewski2021-03-022-1/+89
| | | | | | | | | | | This patch provides test for utimes. It uses wrapper to read access and modification times to compare them with ones written by utimes. Moreover, access and modification times beyond the Y2038 threshold date (i.e. 32 bit time_t overflow) are also checked. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst: Add test for utimeLukasz Majewski2021-03-022-1/+88
| | | | | | | | | | This patch provides test for utime. It uses wrapper to read access and modification times to compare them with ones written by utime. Moreover, access and modification times beyond the Y2038 threshold date (i.e. 32 bit time_t overflow) are also checked. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* tst: Add test for futimensLukasz Majewski2021-03-022-1/+85
| | | | | | | | | | | This patch provides test for futimens. It uses wrapper, which reads access and modification time to compare them with ones written by futimens. Moreover, access and modification times beyond the Y2038 threshold date (i.e. 32 bit time_t overflow) are also checked. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: __libc_cleanup_push/__libc_cleanup_pop require -fexceptionsFlorian Weimer2021-03-021-3/+6
| | | | | | Do not define these macros if they do nothing in a particular compilation, otherwise they can easily be used accidentally, while not actually achieving anything.
* nptl: Use <unwind-link.h> for accessing the libgcc_s unwinderFlorian Weimer2021-03-014-142/+44
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Implement _Unwind_Resume in libc on top of <unwind-link.h>Florian Weimer2021-03-015-61/+97
| | | | | | | | Temporarily move the arm _Unwind_Resume implementation to the file used by libpthread. It will be ported to <unwind-link.h> along with the rest of nptl. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Move sysdeps/gnu/unwind-resume.c to sysdeps/generic/unwind-resume.cFlorian Weimer2021-03-011-0/+0
| | | | | | | This change allows architecture-specific sysdeps directories to override it. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* __frame_state_for: Use <unwind-link.h> for unwinder accessFlorian Weimer2021-03-011-13/+8
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* sparc: Implement backtrace on top <unwind-link.h>Florian Weimer2021-03-011-51/+15
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
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