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* Use __attribute_pure__ macro in bits/mathcalls.hGabriel F. T. Gomes2019-09-051-2/+2
| | | | | | | | | When the const attribute of totalorder* functions was replaced with the pure attribute, by commit ID ab41100bab12, it did not use the __attribute_pure__ macro, but the __attribute__ ((__pure__)) statement. All other uses of the pure attribute in glibc use the macro. Tested for powerpc64le.
* locale: Avoid zero-length array in _nl_category_names [BZ #24962]Florian Weimer2019-09-057-27/+38
| | | | | | | The union wrapper is unnecessary because C allows to read any object as a sequence of chars. Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* math: Replace const attribute with pure in totalorder* functionsGabriel F. T. Gomes2019-09-052-3/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since the commit commit 42760d764649ad82f5fe45a26cbdf2c2500409f7 Author: Joseph Myers <joseph@codesourcery.com> Date: Thu Aug 15 15:18:34 2019 +0000 Make totalorder and totalordermag functions take pointer arguments. the test case math/test-totalorderl-ldbl-128ibm fails on every input pair, when compiled with -O2, which is the case for glibc test suite. Debugging showed that the test case is passing arguments incorrectly to totalorderl. This can also be inferred by the fact that compiling the test case with -O0 hides the bug. The documentation for the const attribute in GCC manual reads: Note that a function that has pointer arguments and examines the data pointed to must not be declared const if the pointed-to data might change between successive invocations of the function. In general, since a function cannot distinguish data that might change from data that cannot, const functions should never take pointer or, in C++, reference arguments. Likewise, a function that calls a non-const function usually must not be const itself. Since the pointed-to data is likely to be changed by user code between invocations of totalorder*, this patch removes the const attribute from the declarations of all totalorder functions, replacing it with the pure attribute, as suggested in the manual: The pure attribute imposes similar but looser restrictions on a function’s definition than the const attribute: pure allows the function to read any non-volatile memory, even if it changes in between successive invocations of the function. Tested for powerpc64le and x86_64.
* y2038: Introduce the __ASSUME_TIME64_SYSCALLS defineLukasz Majewski2019-09-042-0/+64
| | | | | | | | | | | | | | | | | | | | Add a macro to linux/kernel-features.h, __ASSUME_TIME64_SYSCALLS, to indicate whether the kernel can be assumed to provide a set of system calls that process 64-bit time_t. __ASSUME_TIME64_SYSCALLS does not indicate whether time_t is actually 64 bits (that's __TIMEBITS) and also does not indicate whether the 64-bit time_t system calls have "time64" suffixes on their names. Code that uses __ASSUME_TIME64_SYSCALLS will be added in subsequent patches. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_TIME64_SYSCALLS): New macro. Reviewed-by: Alistair Francis <alistair23@gmail.com> Reviewed-by: Joseph Myers <joseph@codesourcery.com> Reviewed-by: Zack Weinberg <zackw@panix.com>
* Finish move of clock_* functions to libc. [BZ #24959]Zack Weinberg2019-09-0472-243/+382
| | | | | | | | | | | | | | | | In glibc 2.17, the functions clock_getcpuclockid, clock_getres, clock_gettime, clock_nanosleep, and clock_settime were moved from librt.so to libc.so, leaving compatibility stubs behind. Now that the dynamic linker no longer insists on finding versioned symbols in the same library that originally defined them, we do not need the stubs anymore, and this means we don't need GLIBC_PRIVATE __-prefix aliases for most of the functions anymore either. (clock_gettime still needs one.) For ports added before 2.17, libc.so needs to provide two symbol versions for each, the default at GLIBC_2.17 plus a compat version matching what librt had. While I'm at it, move the clock_*.c files and their tests from rt/ to time/.
* Update Alpha libm-test-ulpsAurelien Jarno2019-09-032-8/+12
| | | | | | Changelog: * sysdeps/alpha/fpu/libm-test-ulps: Regenerated using GCC 9.2.
* localedef: Use initializer for flexible array member [BZ #24950]Florian Weimer2019-09-033-7/+15
| | | | | | | | | | | | | | | | | | | | | | | struct charseq used a zero-length array instead of a flexible array member. This required a strange construct to initialize struct charseq objects, and GCC 10 warns about that: cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=] In file included from programs/repertoire.h:24, from programs/localedef.h:32, from programs/ld-ctype.c:35: programs/charmap.h:63:17: note: destination object declared here 63 | unsigned char bytes[0]; | ^~~~~ cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=] programs/charmap.h:63:17: note: destination object declared here cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=] programs/charmap.h:63:17: note: destination object declared here cc1: error: writing 1 byte into a region of size 0 [-Werror=stringop-overflow=] programs/charmap.h:63:17: note: destination object declared here The change makes the object physically const, but it is not expected to be modified.
* Add misc/tst-mntent-autofs, testing autofs "ignore" filteringFlorian Weimer2019-09-023-1/+148
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* Use autofs "ignore" mount hint in getmntent_r/getmntentIan Kent2019-09-022-12/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Historically autofs mounts were not included in mount table listings. This is the case in other SysV autofs implementations and was also the case with Linux autofs. But now that /etc/mtab is a symlink to the proc filesystem mount table the autofs mount entries appear in the mount table on Linux. Prior to the symlinking of /etc/mtab mount table it was sufficient to call mount(2) and simply not update /etc/mtab to exclude autofs mounts from mount listings. Also, with the symlinking of /etc/mtab we have seen a shift in usage toward using the proc mount tables directly. But the autofs mount entries need to be retained when coming from the proc file system for applications that need them (largely autofs file system users themselves) so filtering out these entries within the kernel itself can't be done. So it needs be done in user space. There are three reasons to omit the autofs mount entries. One is that certain types of auto-mounts have an autofs mount for every entry in their autofs mount map and these maps can be quite large. This leads to mount table listings containing a lot of unnecessary entries. Also, this change in behaviour between autofs implementations can cause problems for applications that use getmntent(3) in other OS implementations as well as Linux. Lastly, there's very little that user space can do with autofs mount entries since this must be left to the autofs mount owner, typically the automount daemon. But it can also lead to attempts to access automount managed paths resulting mounts being triggered when they aren't needed or mounts staying mounted for much longer thay they need be. While the point of this change ins't to help with these problems (and it can be quite a problem) it may be a welcome side effect. So the Linux autofs file system has been modified to accept a pseudo mount option of "ignore" (as is used in other OS implementations) so that user space can use this as a hint to skip autofs entries on reading the mount table. The Linux autofs automount daemon used getmntent(3) itself and has been modified to use the proc file system directly so that it can "ignore" mount option. The use of this mount option is opt-in and a configuration option has been added which defaults to not use this option so if there are applications that need these entries, other than autofs itself, they can be retained. Also, since this filtering is based on an added mount option earlier versions of Linux autofs iand other autofs file system users will not use the option and so won't be affected by the change.
* hurd: Fix buildSamuel Thibault2019-08-301-1/+1
| | | | | * sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn2): Spin-lock '&ss->lock', not 'ss'.
* Use generic memset/memcpy/memmove in benchtestsWilco Dijkstra2019-08-309-98/+91
| | | | | | | | | | | | | | | | | | | | | | | Use the generic C memset/memcpy/memmove in benchtests since comparing against a slow byte-oriented implementation makes no sense. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> 2019-08-29 Wilco Dijkstra <wdijkstr@arm.com> * benchtests/bench-memcpy.c (simple_memcpy): Remove. (generic_memcpy): Include generic C memcpy. * benchtests/bench-memmove.c (simple_memmove): Remove. (generic_memmove): Include generic C memmove. * benchtests/bench-memset.c (simple_memset): Remove. (generic_memset): Include generic C memset. * benchtests/bench-memset-large.c (simple_memset): Remove. (generic_memset): Include generic C memset. * benchtests/bench-memset-walk.c (simple_memset): Remove. (generic_memset): Include generic C memset. * string/memcpy.c (MEMCPY): Add defines to enable redirection. * string/memset.c (MEMSET): Likewise. * sysdeps/x86_64/memcopy.h: Remove empty file.
* nptl: Move pthread_attr_getinheritsched implementation into libcFlorian Weimer2019-08-3033-34/+69
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* hurd: Fix SS_ONSTACK supportSamuel Thibault2019-08-302-26/+47
| | | | | | | * sysdeps/mach/hurd/i386/sigreturn.c (__sigreturn2): New function, unlocks SS and returns to the saved PC. (__sigreturn): Do not unlock SS, and "return" into __sigreturn2 on the thread stack instead of the saved PC.
* hurd: Remove optimizing anonymous maps as __vm_allocate.Samuel Thibault2019-08-302-23/+4
| | | | | | | | Optimizing anonymous maps brings bugs, and does not optimize much anyway. [BZ #19903] * sysdeps/mach/hurd/mmap.c (__mmap): Remove optimizing anonymous maps as __vm_allocate.
* hurd: Fix poll and select POSIX compliancy details about errorsSamuel Thibault2019-08-302-41/+123
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes the following: - On error, poll must not return without polling, including EBADF, and instead report POLLHUP/POLLERR/POLLNVAL - Select must report EBADF if some set contains an invalid FD. The idea is to move error management to after all select calls, in the poll/select final treatment. The error is instead recorded in a new `error' field, and a new SELECT_ERROR bit set. Thanks Svante Signell for the initial version of the patch. * hurd/hurdselect.c (SELECT_ERROR): New macro. (_hurd_select): - Add `error' field to `d' structures array. - If a poll descriptor is bogus, set EBADF, but continue with a zero timeout. - Go through the whole fd_set, not only until _hurd_dtablesize. Return EBADF there is any bit set above _hurd_dtablesize. - Do not request io_select on bogus descriptors (SELECT_ERROR). - On io_select request error, record the error. - On io_select bogus reply, use EIO error code. - On io_select bogus or error reply, record the error. - Do not destroy reply port for bogus FDs. - On error, make poll set POLLHUP in the EPIPE case, POLLNVAL in the EBADF case, or else POLLERR. - On error, make select simulated readiness.
* hurd: Fix timeout handling in _hurd_selectRichard Braun2019-08-303-41/+87
| | | | | | | | | | | | | | | | | | | Rely on servers to implement timeouts, so that very short values (including 0) don't make mach_msg return before valid replies can be received. The purpose of this scheme is to guarantee a full client-server round-trip, whatever the timeout value. This change depends on the new io_select_timeout RPC being implemented by servers. * hurd/Makefile (user-interfaces): Add io_reply and io_request. * hurd/hurdselect.c: Include <sys/time.h>, <hurd/io_request.h> and <limits.h>. (_hurd_select): Replace the call to __io_select with either __io_select_request or __io_select_timeout_request, depending on the timeout. Count the number of ready descriptors (replies for which at least one type bit is set). Implement the timeout locally when there is no file descriptor.
* hurd getcwd: Allow unknown root directorySamuel Thibault2019-08-302-13/+9
| | | | | | | | | | | To be efficient, the remap translator simply returns ports from the underlying filesystem, and thus the root directory found through browsing '..' is the underlying root, not the remap root. This should not be a reason for getcwd to fail. * sysdeps/mach/hurd/getcwd.c (_hurd_canonicalize_directory_name_internal): Do not remove the heading slash if we got an unknown root directory. (__getcwd): Do not fail with EGRATUITOUS if we got an unknown root directory.
* hurd: Fix implementation of setitimer.Samuel Thibault2019-08-302-8/+13
| | | | | | | | | The preemptor sigcode doesn't match since the POSIX sigcode SI_TIMER is used when SIGALRM is sent. In addition, The inline version of hurd_preempt_signals doesn't update _hurdsig_preempted_set. For these reasons, the preemptor would be skipped by post_signal. * sysdeps/mach/hurd/setitimer.c (setitimer_locked): Fix preemptor setup.
* hurd: Fix _hurd_select for single fd setsRichard Braun2019-08-302-4/+6
| | | | | | | | | | | | The function attempts to optimize this case by performing one IPC system call with the timeout included among the parameters, but in the absence of a reply, it will call mach_msg again with the same timeout later, effectively doubling the total timeout of the select/poll call. Remove this optimization for the time being. * hurd/hurdselect.c (_hurd_select): Always call __io_select with no timeout.
* MIPS support for GNU hashMihailo Stojanovic2019-08-299-8/+70
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is a reimplementation of [1], which was submitted back in 2015. Copyright issue has been sorted [2] last year. It proposed a new section (.gnu.xhash) and related dynamic tag (GT_GNU_XHASH). The new section would be virtually identical to the existing .gnu.hash except for the translation table (xlat) which would contain correct MIPS .dynsym indexes corresponding to the hashvals in chains. This is because MIPS ABI imposes a different ordering of the dynsyms than the one expected by the .gnu.hash section. Another addition would be a leading word at the beggining of the section, which would contain the number of entries in the translation table. In this patch, the new section name and dynamic tag are changed to reflect the fact that the section should be treated as MIPS specific (.MIPS.xhash and DT_MIPS_XHASH). This patch addresses the alignment issue reported in [3] which is caused by the leading word of the .MIPS.xhash section. Leading word is now removed in the corresponding binutils patch, and the number of entries in the translation table is computed using DT_MIPS_SYMTABNO dynamic tag. Since the MIPS specific dl-lookup.c file was removed following the initial patch submission, I opted for the definition of three new macros in the generic ldsodefs.h. ELF_MACHINE_GNU_HASH_ADDRIDX defines the index of the dynamic tag in the l_info array. ELF_MACHINE_HASH_SYMIDX is used to calculate the index of a symbol in GNU hash. On MIPS, it is defined to look up the symbol index in the translation table. ELF_MACHINE_XHASH_SETUP is defined for MIPS only. It initializes the .MIPS.xhash pointer in the link_map_machine struct. The other major change is bumping the highest EI_ABIVERSION value for MIPS to suggest that the dynamic linker now supports GNU hash. The patch was tested by running the glibc testsuite for the three MIPS ABIs (o32, n32 and n64) and for x86_64-linux-gnu. [1] https://sourceware.org/ml/binutils/2015-10/msg00057.html [2] https://sourceware.org/ml/binutils/2018-03/msg00025.html [3] https://sourceware.org/ml/binutils/2016-01/msg00006.html * elf/dl-addr.c (determine_info): Calculate the symbol index using the newly defined ELF_MACHINE_HASH_SYMIDX macro. * elf/dl-lookup.c (do_lookup_x): Ditto. (_dl_setup_hash): Initialize MIPS xhash translation table. * elf/elf.h (SHT_MIPS_XHASH): New define. (DT_MIPS_XHASH): New define. * sysdeps/generic/ldsodefs.h (ELF_MACHINE_GNU_HASH_ADDRIDX): New define. (ELF_MACHINE_HASH_SYMIDX): Ditto. (ELF_MACHINE_XHASH_SETUP): Ditto. * sysdeps/mips/ldsodefs.h (ELF_MACHINE_GNU_HASH_ADDRIDX): New define. (ELF_MACHINE_HASH_SYMIDX): Ditto. (ELF_MACHINE_XHASH_SETUP): Ditto. * sysdeps/mips/linkmap.h (struct link_map_machine): New member. * sysdeps/unix/sysv/linux/mips/ldsodefs.h: Increment valid ABI version. * sysdeps/unix/sysv/linux/mips/libc-abis: New ABI version.
* sh: Split BE/LE abilistAdhemerval Zanella2019-08-2937-9/+3756
| | | | | | | | | | | | | | | | | | | | The fix for BZ#18231 requires new symbols only for sh4eb. This patch adds the required folder and files for both BE and LE abilist. No semantic changes are expected. Checked with check-abi for sh4eb-linux-gnu and sh4-linux-gnu. * sysdeps/sh/preconfigure.ac: New file. * sysdeps/sh/preconfigure: Regenerate. * sysdeps/sh/be/sh3/Implies: New file. * sysdeps/sh/be/sh4/Implies: Likewise. * sysdeps/sh/le/sh3/Implies: Likewise. * sysdeps/sh/le/sh4/Implies: Likewise. * sysdeps/unix/sysv/linux/sh/le/sh3/Implies: Likewise. * sysdeps/unix/sysv/linux/sh/le/sh4/Implies: Likewise. * sysdeps/unix/sysv/linux/sh/*.abilist: Move to sysdeps/unix/sysv/linux/sh/le/*.abilist. * sysdeps/unix/sysv/linux/sh/be/*.abilist: New files.
* microblaze: Split BE/LE abilistAdhemerval Zanella2019-08-2931-1/+3661
| | | | | | | | | | | | | | | | | | | The fix for BZ#18231 requires new symbols only for microblaze. This patch adds the required folder and files for both BE and LE abilist. No semantic changes are expected. Checked with check-abi for microblaze-linux-gnueabihf and microblazeel-linux-gnueabihf. * sysdeps/microblaze/preconfigure.ac: New file. * sysdeps/microblaze/preconfigure: Regenerate. * sysdeps/microblaze/be/implies: New file. * sysdeps/microblaze/le/implies: Likewise. * sysdeps/unix/sysv/linux/microblaze/be/implies: Likewise. * sysdeps/unix/sysv/linux/microblaze/le/implies: Likewise. * sysdeps/unix/sysv/linux/microblaze/*.abilist. Move to sysdeps/unix/sysv/linux/microblaze/be/*.abilist. * sysdeps/unix/sysv/linux/microblaze/le/*.abilist: New files.
* arm: Split BE/LE abilistAdhemerval Zanella2019-08-2936-2/+3705
| | | | | | | | | | | | | | | | | | | | | The fix for BZ#18231 requires new symbols only for armeb. This patch adds the required folder and files for both BE and LE abilist. No semantic changes are expected. Checked with check-abi for arm-linux-gnueabihf and armeb-linux-gnueabihf. * sysdeps/arm/preconfigure.ac: Set machine based on endianness. * sysdeps/arm/preconfigure: Regenerate. * sysdeps/arm/be/Implies: New file. * sysdeps/arm/be/armv6/Implies: Likewise. * sysdeps/arm/be/armv6t2/Implies: Likewise. * sysdeps/arm/be/armv7/Implies: Likewise. * sysdeps/arm/le/Implies: Likewise. * sysdeps/unix/sysv/linux/arm/be/Implies: Likewise. * sysdeps/unix/sysv/linux/arm/le/Implies: Likewise. * sysdeps/unix/sysv/linux/arm/*.abilist: Move to sysdeps/unix/sysv/linux/arm/le/*.abilist. * sysdeps/unix/sysv/linux/arm/be/l*.abilist: New files.
* Correct the spelling of more contributorsPaul Eggert2019-08-2919-77/+78
| | | | | Correct the spellings of Rafael Ávila de Espíndola, Uroš Bizjak, Alexandra Hájková, and Rafał Lużyński.
* Fix posix/tst-regex by using UTF-8 and own test inputPaul Eggert2019-08-293-31/+41
| | | | | | | | | | Problem reported by Stefan Liebler in: https://sourceware.org/ml/libc-alpha/2019-08/msg00658.html * posix/tst-regex.c: Convert this file from Latin-1 to UTF-8. (do_test, test_expr): Adjust to the fact that this source file, and the test data in ChangeLog.8, is now UTF-8 instead of Latin-1. * posix/tst-regex.input: Copy from ChangeLog.old/ChangeLog.8, so that it is now UTF-8.
* [powerpc] fegetenv_status: simplify instruction generationPaul A. Clarke2019-08-282-15/+11
| | | | | | | | | | | | | | fegetenv_status() wants to use the lighter weight instruction 'mffsl' for reading the Floating-Point Status and Control Register (FPSCR). It currently will use it directly if compiled '-mcpu=power9', and will perform a runtime check (cpu_supports("arch_3_00")) otherwise. Nicely, it turns out that the 'mffsl' instruction will decode to 'mffs' on architectures older than "arch_3_00" because the additional bits set for 'mffsl' are "don't care" for 'mffs'. 'mffs' is a superset of 'mffsl'. So, just generate 'mffsl'.
* [powerpc] fesetenv: optimize FPSCR accessPaul A. Clarke2019-08-282-8/+10
| | | | | | | | | | | | | | fesetenv() reads the current value of the Floating-Point Status and Control Register (FPSCR) to determine the difference between the current state of exception enables and the newly requested state. All of these bits are also returned by the lighter weight 'mffsl' instruction used by fegetenv_status(). Use that instead. Also, remove a local macro _FPU_MASK_ALL in favor of a common macro, FPU_ENABLES_MASK from fenv_libc.h. Finally, use a local variable ('new') in favor of a pointer dereference ('*envp').
* [powerpc] SET_RESTORE_ROUND improvementsPaul A. Clarke2019-08-282-2/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SET_RESTORE_ROUND uses libc_feholdsetround_ppc_ctx and libc_feresetround_ppc_ctx to bracket a block of code where the floating point rounding mode must be set to a certain value. For the *prologue*, libc_feholdsetround_ppc_ctx is used and performs: 1. Read/save FPSCR. 2. Create new value for FPSCR with new rounding mode and enables cleared. 3. If new value is different than current value, a. If transitioning from a state where some exceptions enabled, enter "ignore exceptions / non-stop" mode. b. Write new value to FPSCR. c. Put a mark on the wall indicating the FPSCR was changed. (1) uses the 'mffs' instruction. On POWER9, the lighter weight 'mffsl' instruction can be used, but it doesn't return all of the bits in the FPSCR. fegetenv_status uses 'mffsl' on POWER9, 'mffs' otherwise, and can thus be used instead of fegetenv_register. (3b) uses 'mtfsf 0b11111111' to write the entire FPSCR, so it must instead use 'mtfsf 0b00000011' to write just the enables and the mode, because some of the rest of the bits are not valid if 'mffsl' was used. fesetenv_mode uses 'mtfsf 0b00000011' on POWER9, 'mtfsf 0b11111111' otherwise. For the *epilogue*, libc_feresetround_ppc_ctx checks the mark on the wall, then calls libc_feresetround_ppc, which just calls __libc_femergeenv_ppc with parameters such that it performs: 1. Retreive saved value of FPSCR, saved in prologue above. 2. Read FPSCR. 3. Create new value of FPSCR where: - Summary bits and exception indicators = current OR saved. - Rounding mode and enables = saved. - Status bits = current. 4. If transitioning from some exceptions enabled to none, enter "ignore exceptions / non-stop" mode. 5. If transitioning from no exceptions enabled to some, enter "catch exceptions" mode. 6. Write new value to FPSCR. The summary bits are hardwired to the exception indicators, so there is no need to restore any saved summary bits. The exception indicator bits, which are sticky and remain set unless explicitly cleared, would only need to be restored if the code block might explicitly clear any of them. This is certainly not expected. So, the only bits that need to be restored are the enables and the mode. If it is the case that only those bits are to be restored, there is no need to read the FPSCR. Steps (2) and (3) are unnecessary, and step (6) only needs to write the bits being restored. We know we are transitioning out of "ignore exceptions" mode, so step (4) is unnecessary, and in step (6), we only need to check the state we are entering.
* [powerpc] fe{en,dis}ableexcept, fesetmode: optimize FPSCR accessesPaul A. Clarke2019-08-285-24/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Since fe{en,dis}ableexcept() and fesetmode() read-modify-write just the "mode" (exception enable and rounding mode) bits of the Floating Point Status Control Register (FPSCR), the lighter weight 'mffsl' instruction can be used to read the FPSCR (enables and rounding mode), and 'mtfsf 0b00000011' can be used to write just those bits back to the FPSCR. The net is better performance. In addition, fe{en,dis}ableexcept() read the FPSCR again after writing it, or they determine that it doesn't need to be written because it is not changing. In either case, the local variable holds the current values of the enable bits in the FPSCR. This local variable can be used instead of again reading the FPSCR. Also, that value of the FPSCR which is read the second time is validated against the requested enables. Since the write can't fail, this validation step is unnecessary, and can be removed. Instead, the exceptions to be enabled (or disabled) are transformed into available bits in the FPSCR, then validated after being transformed back, to ensure that all requested bits are actually being set. For example, FE_INVALID_SQRT can be requested, but cannot actually be set. This bit is not mapped during the transformations, so a test for that bit being set before and after transformations will show the bit would not be set, and the function will return -1 for failure. Finally, convert the local macros in fesetmode.c to more generally useful macros in fenv_libc.h.
* [powerpc] fe{en,dis}ableexcept optimize bit translationsPaul A. Clarke2019-08-284-33/+72
| | | | | | | | | | | The exceptions passed to fe{en,dis}ableexcept() are defined in the ABI as a bitmask, a combination of FE_INVALID, FE_OVERFLOW, etc. Within the functions, these bits must be translated to/from the corresponding enable bits in the Floating Point Status Control Register (FPSCR). This translation is currently done bit-by-bit. The compiler generates a series of conditional bit operations. Nicely, the "FE" exception bits are all a uniform offset from the FPSCR enable bits, so the bit-by-bit operation can instead be performed by a shift with appropriate masking.
* misc: Use allocate_once in getmntentFlorian Weimer2019-08-282-16/+29
| | | | | | | Both the buffer and struct mntent are now allocated on the heap. This results in a slight reduction of RSS usage. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* nptl: Move pthread_attr_setdetachstate implementation into libcFlorian Weimer2019-08-2830-32/+63
| | | | Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* login: pututxline could fail to overwrite existing entries [BZ #24902]Florian Weimer2019-08-284-11/+201
| | | | | | | | | | | | | | | | | | | The internal_getut_r function updates the file_offset variable and therefore must always update last_entry as well. Previously, if pututxline could not upgrade the read lock to a write lock, internal_getut_r would update file_offset only, without updating last_entry, and a subsequent call would not overwrite the existing utmpx entry at file_offset, instead creating a new entry. This has been observed to cause unbounded file growth in high-load situations. This commit removes the buffer argument to internal_getut_r and updates the last_entry variable directly, along with file_offset. Initially reported and fixed by Ondřej Lysoněk. Reviewed-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com>
* Fix posix/tst-regex by using a dedicated input-file.Stefan Liebler2019-08-283-1/+12555
| | | | | | | | | | | | | | | | The recent commit e6855a3bdfe147c52b29b5e7d70a95a8aa22ece0 changed the encoding of ChangeLog.old/ChangeLog.8 from ISO-8859 to UTF-8. Unfortunately the test posix/tst-regex assumes the former encoding. Furthermore Francesco Potortì is now written with 'ì' instead of 'i`' which would lead to two further matches in the first call to test_expr. This patch just copies the former ChangeLog.8 file to tst-regex.input and adjusts the test in order to use this new input file. ChangeLog: * posix/tst-regex.c (do_test): Use tst-regex.input as input file. * posix/tst-regex.input: New file.
* Don't put non-ASCII into installed headersPaul Eggert2019-08-237-7/+11
| | | | | | | | Move non-ASCII contributor names from installed headers into contrib.texi when possible, and when it's not (the copyright notice in sysdeps/unix/sysv/linux/mips/sys/user.h) go back to ASCIIfied names. Problem reported by Joseph Myers in: https://www.sourceware.org/ml/libc-alpha/2019-08/msg00646.html
* Fix spellings of contributor names in comments and docPaul Eggert2019-08-2339-141/+141
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* [MIPS] Raise highest supported EI_ABIVERSION value [BZ #24916]Mihailo Stojanovic2019-08-235-1/+91
| | | | | | | | | | | | | | | | | | | | | | | | | | This bumps the highest valid EI_ABIVERSION value to ABSOLUTE ABI. New testcase loads the symbol from the GOT with the "lb" instruction so that the EI_ABIVERSION header field of the shared object is set to ABSOLUTE (it doesn't actually check the value of the symbol), and makes sure that the main executable is executed without "ABI version invalid" error. Tested for all three ABIs (o32, n32, n64) using both static linker which handles undefined weak symbols correctly [1] (and sets the EI_ABIVERSION of the test module) and the one that doesn't (EI_ABIVERSION left as 0). [1] https://sourceware.org/ml/binutils/2018-07/msg00268.html [BZ #24916] * sysdeps/mips/Makefile [$(subdir) = elf] (tests): Add tst-undefined-weak. [$(subdir) = elf] (modules-names): Add tst-undefined-weak-lib. [$(subdir) = elf] ($(objpfx)tst-undefined-weak): Add dependency. * sysdeps/mips/tst-undefined-weak-lib.S: New file. * sysdeps/mips/tst-undefined-weak.c: Likewise. * sysdeps/unix/sysv/linux/mips/ldsodefs.h (VALID_ELF_ABIVERSION): Increment highest valid ABIVERSION value.
* mips: Force RWX stack for hard-float builds that can run on pre-4.8 kernelsDragan Mladjenovic2019-08-234-5/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | Linux/Mips kernels prior to 4.8 could potentially crash the user process when doing FPU emulation while running on non-executable user stack. Currently, gcc doesn't emit .note.GNU-stack for mips, but that will change in the future. To ensure that glibc can be used with such future gcc, without silently resulting in binaries that might crash in runtime, this patch forces RWX stack for all built objects if configured to run against minimum kernel version less than 4.8. * sysdeps/unix/sysv/linux/mips/Makefile (test-xfail-check-execstack): Move under mips-has-gnustack != yes. (CFLAGS-.o*, ASFLAGS-.o*): New rules. Apply -Wa,-execstack if mips-force-execstack == yes. * sysdeps/unix/sysv/linux/mips/configure: Regenerated. * sysdeps/unix/sysv/linux/mips/configure.ac (mips-force-execstack): New var. Set to yes for hard-float builds with minimum_kernel < 4.8.0 or minimum_kernel not set at all. (mips-has-gnustack): New var. Use value of libc_cv_as_noexecstack if mips-force-execstack != yes, otherwise set to no.
* linux: Make profil_counter a compat_symbol (BZ#17726)Adhemerval Zanella2019-08-234-2/+16
| | | | | | | | | | | | | | | As indicated by Joseph's comment on BZ#17726, this symbol is most likely a historical ABI accident. This patch make it on both arm and sparc ABIs a compat_symbol. Checked against a build arm-linux-gnueabihf, sparcv9-linux-gnu, adn sparc64-linux-gnu to see if the symbol is still present. * gmon/Versions (libc) [GLIBC_2.31]: New entry. * sysdeps/unix/sysv/linux/arm/profil-counter.h (profil_counter): Make a compat_symbol. * sysdeps/unix/sysv/linux/sparc/profil-counter.h (__profil_counter_global): Likewise.
* Refactor sigcontextinfo.hAdhemerval Zanella2019-08-2352-964/+965
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch refactor sigcontextinfo.h header to use SA_SIGINFO as default for both gmon and debug implementations. This allows simplify profil-counter.h on Linux to use a single implementation and remove the requirements for newer ports to redefine __sigaction/sigaction to use SA_SIGINFO. The GET_PC macro is also replaced with a function sigcontext_get_pc that returns an uintptr_t instead of a void pointer. It allows easier convertion to integer on ILP32 architecture, such as x32, without the need to suppress compiler warnings. The patch also requires some refactor of register-dump.h file for some architectures (to reflect it is now called from a sa_sigaction instead of sa_handler signal context). - Alpha, i386, and s390 are straighfoward to take in consideration the new argument type. - ia64 takes in consideration the kernel pass a struct sigcontextt as third argument for sa_sigaction. - sparc take in consideration the kernel pass a pt_regs struct as third argument for sa_sigaction. - m68k dummy function is removed and the FP state is dumped on register_dump itself. - For SH the register-dump.h file is consolidate on a common implementation and the floating-point state is checked based on ownedfp field. The register_dump does not change its output format in any affected architecture. I checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabihf, sparcv9-linux-gnu, sparc64-linux-gnu, powerpc-linux-gnu, powerpc64-linux-gnu, and powerpc64le-linux-gnu. I also checked the libSegFault.so through catchsegv on alpha-linux-gnu, m68k-linux-gnu and sh4-linux-gnu to confirm the output has not changed. Adhemerval Zanella <adhemerval.zanella@linaro.org> Florian Weimer <fweimer@redhat.com> * debug/segfault.c (install_handler): Use SA_SIGINFO if defined. * sysdeps/generic/profil-counter.h (__profil_counter): Cast to uintptr_t. * sysdeps/generic/sigcontextinfo.h (GET_PC): Rename to sigcontext_get_pc and return aligned cast to uintptr_t. * sysdeps/mach/hurd/i386/sigcontextinfo.h (GET_PC): Likewise. * sysdeps/posix/profil.c (profil_count): Change PC argument to uintptr_t. (__profil): Use SA_SIGINFO. * sysdeps/posix/sprofil.c (profil_count): Change PCP argument to uintptr_t. (__sprofil): Use SA_SIGINFO. * sysdeps/unix/sysv/linux/profil-counter.h: New file. * sysdeps/unix/sysv/linux/aarch64/profil-counter.h: Remove file. * sysdeps/unix/sysv/linux/csky/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/hppa/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/i386/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/ia64/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/microblaze/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/mips/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/nios2/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/riscv/profil-counter.h: Likewise. * sysdeps/sysv/linux/s390/s390-32/profil-counter.h: Likewise. * sysdeps/sysv/linux/s390/s390-64/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/sh/profil-counter.h: Likewise. * sysdeps/unix/sysv/linux/arm/profil-counter.h (__profil_counter): Assume SA_SIGINFO and use sigcontext_get_pc instead of GET_PC. * sysdeps/unix/sysv/linux/sparc/profil-counter.h: New file. * sysdeps/unix/sysv/linux/sparc/sparc64/profil-counter.h: Remove file. * sysdeps/unix/sysv/linux/sparc/sparc32/profil-counter.h: Likewise. * sysdpes/unix/sysv/linux/aarch64/sigcontextinfo.h (SIGCONTEXT, GET_PC, __sigaction, sigaction): Remove defines. (sigcontext_get_pc): New function. * sysdeps/unix/sysv/linux/alpha/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/arm/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/csky/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/hppa/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/i386/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/ia64/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/m68k/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/mips/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/nios2/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/s390/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/microblaze/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/riscv/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/sh/sigcontextinfo.h: Likewise. * sysdeps/sysv/linux/sparc/sparc32/sigcontextinfo.h: Likewise. * sysdeps/sysv/linux/sparc/sparc64/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/sigcontextinfo.h: Likewise. * sysdeps/unix/sysv/linux/alpha/register-dump.h (register_dump): Handle CTX argument as ucontext_t. * sysdeps/unix/sysv/linux/i386/register-dump.h: Likewise. Likewise. * sysdeps/unix/sysv/linux/m68k/register-dump.h: Likewise. * sysdeps/sysv/linux/s390/s390-32/register-dump.h: Likewise. * sysdeps/sysv/linux/s390/s390-64/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/sh/register-dump.h: New file. * sysdeps/unix/sysv/linux/sh/sh4/register-dump.h: Remove File. * sysdeps/unix/sysv/linux/sh/sh3/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/Makefile (tests-internal): Add tst-sigcontextinfo-get_pc. * sysdeps/unix/sysv/linux/tst-sigcontextinfo-get_pc.c: New file. (CFLAGS-tst-sigcontextinfo-get_pc.c): New rule.
* Add RTLD_SINGLE_THREAD_P on generic single-thread.hAdhemerval Zanella2019-08-232-0/+6
| | | | | * sysdeps/generic/single-thread.h (RTLD_SINGLE_THREAD_P): Add definition.
* Chinese locales: Set first_weekday to 2 (bug 24682).Rafal Luzynski2019-08-234-0/+10
| | | | | | | | | | | | | The first day of the week in China (Mainland) should be Monday according to the national standard GB/T 7408-2005. References: * https://www.doc88.com/p-1166696540287.html * https://unicode-org.atlassian.net/browse/CLDR-11510 [BZ #24682] * localedata/locales/bo_CN (first_weekday): Add, set to 2 (Monday). * localedata/locales/ug_CN (first_weekday): Likewise. * localedata/locales/zh_CN (first_weekday): Likewise.
* powerpc: Fix typos and field name in commentsGustavo Romero2019-08-222-4/+9
| | | | | | | | | Fix a couple of typos and v_regs field name in mcontext_t. * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h: Fix typos and field name in mcontext_t struct. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
* Mark IDN tests unsupported with libidn2 before 2.0.5.Joseph Myers2019-08-223-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using a system (e.g. Ubuntu 18.04) with libidn2 2.0.4 or earlier, test results include: FAIL: resolv/tst-resolv-ai_idn FAIL: resolv/tst-resolv-ai_idn-latin1 It was previously stated <https://sourceware.org/ml/libc-alpha/2018-05/msg00771.html> that "It should fail to indicate you have bugs in your system libidn.". However, the glibc testsuite should be indicating whether there are bugs in glibc, not whether there are bugs in other system pieces - so unless you consider it a glibc bug that it fails to work around the libidn issues, these FAILs are not helpful. And as a general principle, it's best for the expected glibc test results to be clean, with Bugzilla used to track known bugs in glibc itself, rather than people needing to know about the expected FAILs to tell if there are problems with their glibc build. So, while there is an argument that install.texi (not just the old NEWS entries for 2.28) should explain the use of libidn2 and that 2.0.5 or later is recommended, test FAILs are not the right way to indicate the presence of an old libidn2 version. This patch accordingly makes those tests return UNSUPPORTED for older libidn2 versions, just as they do when libidn2 isn't present at all. As implied by that past discussion, it's possible this could result in UNSUPPORTED for systems with older versions but whatever required fixes backported so the tests previously passed, if there are any such systems. Tested for x86_64 on Ubuntu 18.04, including verifying that putting an earlier version in place of 2.0.5 results in the tests FAILing whereas using 2.0.5 as in the patch results in UNSUPPORTED. Florian reports that the tests still run on Fedora 30, with libidn 2.2.0. * resolv/tst-resolv-ai_idn-latin1.c (do_test): Mark test unsupported with libidn2 before 2.0.5. * resolv/tst-resolv-ai_idn.c (do_test): Likewise.
* Document strftime %Ob and %OB as C2X features.Joseph Myers2019-08-222-5/+16
| | | | | | | | | | | | | | | C2X standardizes strftime %Ob and %OB support. This patch updates the glibc manual to say these are C2X features, while noting that the details of what is the alternative form of a month name are not specified in C2X. Note: C2X seems unclear to me about whether %h being equivalent to %b means %Oh is thereby allowed and equivalent to %Ob; I've asked WG14. Tested with "make info" and "make pdf". * manual/time.texi (strftime): Document %Ob and %OB as C2X features.
* Remove dead regex codePaul Eggert2019-08-212-1/+5
| | | | | | * posix/regex_internal.c (re_node_set_insert): Remove unnecessary assignment. Reported by Tim Rühsen in: https://lists.gnu.org/r/bug-gnulib/2019-08/msg00026.html
* Fix bad pointer / leak in regex codePaul Eggert2019-08-212-3/+14
| | | | | | This was found by Coverity (CID 1484201). [BZ#24844] * posix/regex_internal.c (create_cd_newstate): Fix use of bad pointer and/or memory leak when storage is exhausted.
* Don't use the argument to time.Zack Weinberg2019-08-216-6/+17
| | | | | | | | | | | | | | | | | | | It doesn't make sense to remove all the internal uses of time. It's still a standard ISO C function, and its callers don't need sub-second resolution and would be unnecessarily complicated if they had to declare a struct timespec instead of just a time_t. However, a handful of places were using the vestigial "result" argument instead of the return value, which is slightly less efficient and also looks strange. Correct this. * misc/syslog.c (__vsyslog_internal) * time/getdate.c (__getdate_r) * time/tst_wcsftime.c (main): Use return value of time, not its argument. * string/strfry.c (strfry) * sysdeps/mach/sleep.c (__sleep): Remove unnecessary casts of NULL in calls to time.
* Add tgmath.h macros for narrowing functions.Joseph Myers2019-08-215-20/+425
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding some of the TS 18661 narrowing functions for glibc 2.28, I deferred adding corresponding <tgmath.h> support because of unresolved questions about the specification for those type-generic macros, especially in relation to _FloatN and _FloatNx types. Those issues are now clarified in the response to Clarification Request 13 to TS 18661-3, and this patch adds the deferred tgmath.h support. As with other tgmath.h macros, there are fairly straightforward implementations based on __builtin_tgmath for GCC 8 and later, which result in exactly the right function being called in each case, and more complicated implementations for GCC 7 and earlier, which generally result in a function being called whose arguments have the right format (i.e. an alias for the right function), but which might not be exactly the function name specified by TS 18661. In one case with older compilers (f32x* macros, where the type _Float64x exists and all the arguments have type _Float32 or _Float32x), there is a further relaxation and the function called may have arguments narrower than the one specified by the TS, but still wide enough to represent the arguments exactly, so the result of the call is unchanged (as this does not affect any case where rounding of integer arguments might be involved). With GCC 6 or before this is inherently unavoidable (but still harmless and not detectable by how the compiled program behaves, unless it redefines the functions in question like the testcases do) because _Float32x and _Float64 are both typedefs for double in that case but the specified semantics result in different functions, with different argument formats, being called for those two argument types. Tests for the new macros are handled through gen-tgmath-tests.py, which deals with the special-case handling for older GCC. Tested as follows: with the full glibc testsuite on x86_64 and x86 (with GCC 6, 7 and 8); with the math/ tests on aarch64 and arm (with GCC 6, 7 and 8); with build-many-glibcs.py (with GCC 6, 7 and 9). * math/tgmath.h [__HAVE_FLOAT128X]: Give error. [(__HAVE_FLOAT64X && !__HAVE_FLOAT128) || (__HAVE_FLOAT128 && !__HAVE_FLOAT64X)]: Likewise. (__TGMATH_2_NARROW_F): Likewise. (__TGMATH_2_NARROW_D): New macro. (__TGMATH_2_NARROW_F16): Likewise. (__TGMATH_2_NARROW_F32): Likewise. (__TGMATH_2_NARROW_F64): Likewise. (__TGMATH_2_NARROW_F32X): Likewise. (__TGMATH_2_NARROW_F64X): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F16): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F32): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F64): Likewise. [__HAVE_BUILTIN_TGMATH] (__TGMATH_NARROW_FUNCS_F32X): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fadd): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dadd): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fdiv): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (ddiv): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fmul): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dmul): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (fsub): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)] (dsub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT16] (f16sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32] (f32sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64add): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64div): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64mul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64 && (__HAVE_FLOAT64X || __HAVE_FLOAT128)] (f64sub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xadd): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xdiv): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xmul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT32X] (f32xsub): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xadd): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xdiv): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xmul): Likewise. [__GLIBC_USE (IEC_60559_TYPES_EXT) && __HAVE_FLOAT64X && (__HAVE_FLOAT128X || __HAVE_FLOAT128)] (f64xsub): Likewise. * math/gen-tgmath-tests.py (Type): Add members non_standard_real_argument_types_list, long_double_type, complex_float64_type and float32x_ext_type. (Type.__init__): Set the new members. (Type.floating_type): Add new argument floatn. (Type.real_floating_type): Likewise. (Type.can_combine_types): Likewise. (Type.combine_types): Likewise. (Type.init_types): Create internal Float32x_ext type. (Tests.__init__): Define Float32x_ext in generated C code. (Tests.add_tests): Handle narrowing functions. (Tests.add_all_tests): Likewise. (Tests.tests_text): Allow variation in mant_dig for narrowing functions with compilers before GCC 8. * math/Makefile (tgmath3-narrow-types): New variable. (tgmath3-narrow-macros): Likewise. (tgmath3-macros): Add $(tgmath3-narrow-macros).
* Update i386 libm-test-ulpsAndreas Schwab2019-08-202-2/+6
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