about summary refs log tree commit diff
Commit message (Collapse)AuthorAgeFilesLines
* Add pretty-printer for errno. zack/errno-prettyprintZack Weinberg2017-06-228-0/+471
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the actual pretty-printer for errno. I could have used Python's built-in errno module to get the symbolic names for the constants, but it seemed better to do something entirely under our control, so there's a .pysym file generated from errnos.texi, with a hook that allows the Hurd to add additional constants. Then a .py module is generated from that plus errno.h in the usual manner; many thanks to the authors of the .pysym mechanism. There is also a test which verifies that the .py file (not the .pysym file) covers all of the constants defined in errno.h. hurd-add-errno-constants.awk has been manually tested, but the makefile logic that runs it has not been tested. * stdlib/errno-printer.py: New pretty-printer. * stdlib/test-errno-constants.py: New special test. * stdlib/test-errno-printer.c, stdlib/test-errno-printer.py: New pretty-printer test. * stdlib/make-errno-constants.awk: New script to generate the .pysym file needed by errno-printer.py. * stdlib/Makefile: Install, run, and test all of the above, as appropriate. * sysdeps/mach/hurd/hurd-add-errno-constants.awk: New script to add Mach/Hurd-specific errno constants to the .pysym file used by stdlib/errno-printer.py. * sysdeps/mach/hurd/Makefile: Hook hurd-add-errno-constants.awk into the generation of that .pysym file.
* Make error_t always int; make __errno_location return an __error_t.Zack Weinberg2017-06-2210-434/+175
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | error_t is a Hurdism whose purpose, as far as I know, is to make it so you can get GDB to tell you the E-constant corresponding to the current value of errno by typing 'p (error_t) errno'. I tried to generalize this to all platforms a few weeks ago and it was suggested to me that this is maybe a job for a GDB pretty-printer, instead. This patch clears the ground for that, by removing the Hurd-specific definition of error_t. error_t is also used to make the return values of a few GNU extension functions (in argp.h and argz.h) a little more self-documenting, so it can't completely go away, and it will be useful to be able to write 'p (error_t) err' where err is some ordinary int variable that happens to have an errno value stashed in it. So now stdlib/errno.h defines it and it's always just a typedef for 'int'. This patch also changes all definitions of __errno_location and the underlying thread-local errno to have type __error_t instead of int. __error_t is also just a typedef for int, but this is how we will cue the GDB pretty-printer to print errno specially. I believe that this does not have any standards-compliance consequences, because it's just a typedef for int. This part of the change doesn't make sense in the absence of the pretty-printer itself, but this split-up seemed more useful to reviewers. * stdlib/errno.h (__error_t): New type (typedef as int). (__errno_location): Declare as returning __error_t. (error_t): Typedef as __error_t, if not already defined. * csu/errno-loc.c, csu/errno.c, include/errno.h * sysdeps/mach/hurd/dl-sysdep.c, sysdeps/mach/hurd/errno-loc.c: Change type of errno, __libc_errno, and rtld_errno, and return type of __errno_location to __error_t. * sysdeps/mach/hudr/errnos.awk: Do not emit enum __error_t_codes or a definition of error_t. * sysdeps/mach/hurd/bits/errno.h: Regenerate. * sysdeps/mach/hurd/errno.c: Delete file. * bits/errno.h: Update commentary.
* Improve testing of GDB pretty-printers.Zack Weinberg2017-06-222-40/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The C programs used to test GDB pretty-printers were being compiled with -DMODULE_NAME=libc (!) which causes many problems, such as failure to link if they refer to errno. Now they are compiled with -DMODULE_NAME=testsuite instead. test_printers_common.py was testing for expected output in a clumsy way which meant the pexpect timeout had to expire before it could report a failure, even if the regexp was never going to match. This slows down debugging a test quite a bit. Rewrote that logic so it doesn't do that anymore. Note that as a side effect, test() fails the test by calling exit() rather than throwing an exception -- that could change if people think it's a bad idea. Add an 'unsupported_pattern' argument to test(); if the normal 'pattern' fails to match, but an 'unsupported_pattern' was supplied and it matches, then the test fails as unsupported, not as a normal failure. This feature is used in part 2. Tighten up the code to honor TIMEOUTFACTOR, and add another environment variable TEST_PRINTERS_LOG; if this is set to a pathname, all of the dialogue with the gdb subprocess will be logged to that file. * Rules: Set MODULE_NAME=testsuite for everything in tests-printers. * scripts/test_printers_common.py (TIMEOUTFACTOR): Tighten up handling. (TEST_PRINTERS_LOG): New env variable; if set, pexpect will log all dialogue with the gdb subprocess to the file it names. (send_command): New function broken out of test. (test): Add 'unsupported_pattern' argument and improve handling of 'pattern' argument; match failures no longer have to wait for the timeout.
* _nl_load_domain: Use calloc instead of allocaFlorian Weimer2017-06-212-38/+12
|
* Implement allocation buffers for internal useFlorian Weimer2017-06-2110-1/+1240
| | | | | | | | | This commit adds fixed-size allocation buffers. The primary use case is in NSS modules, where dynamically sized data is stored in a fixed-size buffer provided by the caller. Other uses include a replacement of mempcpy cascades (which is safer due to the size checking inherent to allocation buffers).
* x86-64: Implement strcmp family IFUNC selectors in CH.J. Lu2017-06-2125-240/+643
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement strcmp family IFUNC selectors in C. All internal calls within libc.so can use IFUNC on x86-64 since unlike x86, x86-64 supports PC-relative addressing to access the GOT entry so that it can call via PLT without using an extra register. For libc.a, we can't use IFUNC for functions which are called before IFUNC has been initialized. Use IFUNC internally reduces the icache footprint since libc.so and other codes in the process use the same implementations. This patch uses IFUNC for strcmp family functions within libc. * sysdeps/x86_64/multiarch/Makefile (sysdep_routines): Add strcmp-sse2, strcmp-sse4_2, strncmp-sse2, strncmp-sse4_2, strcasecmp_l-sse2, strcasecmp_l-sse4_2, strcasecmp_l-avx, strncase_l-sse2, strncase_l-sse4_2 and strncase_l-avx. * sysdeps/x86_64/multiarch/ifunc-strcasecmp.h: New file. * sysdeps/x86_64/multiarch/strcasecmp.c: Likewise. * sysdeps/x86_64/multiarch/strcasecmp_l-avx.S: Likewise. * sysdeps/x86_64/multiarch/strcasecmp_l-sse2.S: Likewise. * sysdeps/x86_64/multiarch/strcasecmp_l-sse4_2.S: Likewise. * sysdeps/x86_64/multiarch/strcasecmp_l.c: Likewise. * sysdeps/x86_64/multiarch/strcmp-sse2.S: Likewise. * sysdeps/x86_64/multiarch/strcmp-sse4_2.S: Likewise. * sysdeps/x86_64/multiarch/strcmp.c: Likewise. * sysdeps/x86_64/multiarch/strncase.c: Likewise. * sysdeps/x86_64/multiarch/strncase_l-avx.S : Likewise. * sysdeps/x86_64/multiarch/strncase_l-sse2.S: Likewise. * sysdeps/x86_64/multiarch/strncase_l-sse4_2.S: Likewise. * sysdeps/x86_64/multiarch/strncase_l.c: Likewise. * sysdeps/x86_64/multiarch/strncmp-sse2.S: Likewise. * sysdeps/x86_64/multiarch/strncmp-sse4_2.S: Likewise. * sysdeps/x86_64/multiarch/strncmp.c: Likewise. * sysdeps/x86_64/multiarch/strcasecmp_l.S: Removed. * sysdeps/x86_64/multiarch/strcmp.S: Likewise. * sysdeps/x86_64/multiarch/strncase_l.S: Likewise. * sysdeps/x86_64/multiarch/strncmp.S: Likewise. * sysdeps/x86_64/multiarch/strcmp-sse42.S: Include <sysdep.h>. (STRCMP_SSE42): New. Defined to __strcmp_sse42 if not defined. [USE_AS_STRCASECMP_L || USE_AS_STRNCASECMP_L]: Include "locale-defines.h". (UPDATE_STRNCMP_COUNTER): New. (SECTION): Likewise. (GLABEL): Likewise. (LABEL): Likewise. * sysdeps/x86_64/multiarch/strncmp-ssse3.S: Rewrite and enable for libc.a.
* Fix tile SA_* conditions for POSIX.1:2008 (bug 21622).Joseph Myers2017-06-212-0/+11
| | | | | | | | | | | | | | | | | | | As shown by conform/ tests once the remaining namespace issues are fixed, the tile bits/sigaction.h fails to declare SA_RESETHAND, SA_RESTART and SA_NODEFER for non-XSI POSIX.1:2008 as other versions do. Those constants were moved from XSI to Base in the 2008 edition of POSIX. This patch fixes the conditions to match other versions of this header. Tested (compilation only) for tilegx-linux-gnu with build-many-glibcs.py. [BZ #21622] * sysdeps/unix/sysv/linux/tile/bits/sigaction.h (SA_RESTART): Define for [__USE_UNIX98 || __USE_XOPEN2K8], not [__USE_UNIX98 || __USE_MISC]. (SA_NODEFER): Likewise. (SA_RESETHAND): Likewise.
* x86: Rename glibc.tune.ifunc to glibc.tune.hwcapsH.J. Lu2017-06-217-34/+41
| | | | | | | | | | | | | | | | | | | | | | | | Rename glibc.tune.ifunc to glibc.tune.hwcaps and move it to sysdeps/x86/dl-tunables.list since it is x86 specicifc. Also change type of data_cache_size, data_cache_size and non_temporal_threshold to unsigned long int to match size_t. Remove usage DEFAULT_STRLEN from cpu-tunables.c. * elf/dl-tunables.list (glibc.tune.ifunc): Removed. * sysdeps/x86/dl-tunables.list (glibc.tune.hwcaps): New. Remove security_level on all fields. * manual/tunables.texi: Replace ifunc with hwcaps. * sysdeps/x86/cpu-features.c (TUNABLE_CALLBACK (set_ifunc)): Renamed to .. (TUNABLE_CALLBACK (set_hwcaps)): This. (init_cpu_features): Updated. * sysdeps/x86/cpu-features.h (cpu_features): Change type of data_cache_size, data_cache_size and non_temporal_threshold to unsigned long int. * sysdeps/x86/cpu-tunables.c (DEFAULT_STRLEN): Removed. (TUNABLE_CALLBACK (set_ifunc)): Renamed to ... (TUNABLE_CALLBACK (set_hwcaps)): This. Update comments. Don't use DEFAULT_STRLEN.
* DCIGETTEXT: Use getcwd, asprintf to construct absolute pathnameFlorian Weimer2017-06-212-28/+19
|
* [AArch64] Add more cfi annotations to tlsdesc entry pointsSzabolcs Nagy2017-06-212-0/+76
| | | | | | | | Backtrace through _dl_tlsdesc_resolve_rela was broken because the offset of x30 from cfa was not in the debug info. Add enough annotation so backtracing from the dynamic linker through tlsdesc entry points works and the debugger shows registers correctly.
* posix: Add invalid flags test for p{write,read}v2Adhemerval Zanella2017-06-214-0/+60
| | | | | | | | | | | | | | | | This patch add an extra test for passing invalid flags and check its expected failure. It shows an invalid LO_HI_LONG macro definition for x86_64 with leads to passing invalid flags on some configurations. The new tests fails on i686-linux-gnu and potentially on other 32 bits architecture that uses the compat syscall definition due a kernel bug. It is intended to be fixed upstream. Checked on x86_64-linux-gnu * misc/tst-preadvwritev2-common.c: New file. * misc/tst-preadvwritev2.c (do_test): Add test for invalid flag. * misc/tst-preadvwritev64v2.c (do_test): Likewise.
* [AArch64] Use hidden __GI__dl_argv in rtld startup codeSzabolcs Nagy2017-06-212-2/+7
| | | | | We rely on the symbol being locally defined so using extern symbol is not correct and the linker may complain about the relocations.
* getaddrinfo: Avoid stack copy of IPv6 addressFlorian Weimer2017-06-212-40/+10
|
* __inet_pton_length: Implement new internal helper functionFlorian Weimer2017-06-219-73/+697
|
* inet: Add IPv6 getaddrinfo coverage to tst-inet6_scopeid_pton.cFlorian Weimer2017-06-212-10/+116
|
* powerpc: Optimize memchr for power8Rajalakshmi Srinivasaraghavan2017-06-216-1/+382
| | | | | Vectorized loops are used for sizes greater than 32B to improve performance over power7 optimiztion.
* powerpc: Add optimized version of [l]lrintfRajalakshmi Srinivasaraghavan2017-06-216-36/+80
| | | | | This patch makes use of optimized double version of llrint for single precision as both the versions return [long] long type.
* Factor out shared definitions from bits/signum.h.Zack Weinberg2017-06-2015-406/+417
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many of the things defined by bits/signum.h are invariant across all supported operating systems. This patch factors out all of them to a new header bits/signum-generic.h, which each bits/signum.h will include and then override whichever things need adjustment. Normally that will mean, at most, adding or changing a few signal numbers. A user-visible side effect is that the obsolete signal constant SIGUNUSED (which is an alias for SIGSYS on all platforms that define it) is no longer exposed by any version of bits/signum.h. A side effect only relevant to glibc hackers is that _NSIG is now defined in terms of __SIGRTMAX, instead of the other way around. This is because __SIGRTMAX varies from platform to platform, but _NSIG==__SIGRTMAX+1 is true universally. If your platform doesn't support realtime signals, leave __SIGRTMAX equal to __SIGRTMIN. I also added a Linux-specific test to make sure that our signal constants match the ones in <asm/signal.h>, since we can't use that header (it's not even vaguely namespace-clean). * bits/signum-generic.h: Renamed from bits/signum.h. Add proper multiple include guard and misuse check. Define __SIGRTMIN = __SIGRTMAX = 32, and define _NSIG = __SIGRTMAX+1. Move definition of SIGIO to "archaic names for compatibility" section. * bits/signum.h: New file which just includes bits/signum-generic.h. * sysdeps/unix/bsd/bits/signum.h * sysdeps/unix/sysv/linux/bits/signum.h * sysdeps/unix/sysv/linux/alpha/bits/signum.h * sysdeps/unix/sysv/linux/hppa/bits/signum.h * sysdeps/unix/sysv/linux/mips/bits/signum.h * sysdeps/unix/sysv/linux/sparc/bits/signum.h Just include <bits/signum-generic.h> and then add or adjust signal constants. Do not define SIGUNUSED, SIGRTMIN, or SIGRTMAX. * signal/Makefile: Install bits/signum-generic.h. * signal/signal.h: Define SIGRTMIN and SIGRTMAX here. * sysdeps/generic/siglist.h: SIGSYS and SIGWINCH are universal. Prefer SIGPOLL to SIGIO. Simplify #ifdeffage. * sysdeps/unix/sysv/linux/tst-signal-numbers.sh: New test. * sysdeps/unix/sysv/linux/Makefile: Run it.
* Use locale_t, not __locale_t, throughout glibcZack Weinberg2017-06-2073-175/+211
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | <locale.h> is specified to define locale_t in POSIX.1-2008, and so are all of the headers that define functions that take locale_t arguments. Under _GNU_SOURCE, the additional headers that define such functions have also always defined locale_t. Therefore, there is no need to use __locale_t in public function prototypes, nor in any internal code. * ctype/ctype-c99_l.c, ctype/ctype.h, ctype/ctype_l.c * include/monetary.h, include/stdlib.h, include/time.h * include/wchar.h, locale/duplocale.c, locale/freelocale.c * locale/global-locale.c, locale/langinfo.h, locale/locale.h * locale/localeinfo.h, locale/newlocale.c * locale/nl_langinfo_l.c, locale/uselocale.c * localedata/bug-usesetlocale.c, localedata/tst-xlocale2.c * stdio-common/vfscanf.c, stdlib/monetary.h, stdlib/stdlib.h * stdlib/strfmon_l.c, stdlib/strtod_l.c, stdlib/strtof_l.c * stdlib/strtol.c, stdlib/strtol_l.c, stdlib/strtold_l.c * stdlib/strtoll_l.c, stdlib/strtoul_l.c, stdlib/strtoull_l.c * string/strcasecmp.c, string/strcoll_l.c, string/string.h * string/strings.h, string/strncase.c, string/strxfrm_l.c * sysdeps/ieee754/float128/strtof128_l.c * sysdeps/ieee754/float128/wcstof128.c * sysdeps/ieee754/float128/wcstof128_l.c * sysdeps/ieee754/ldbl-128ibm/strtold_l.c * sysdeps/ieee754/ldbl-64-128/strtold_l.c * sysdeps/ieee754/ldbl-opt/nldbl-compat.c * sysdeps/ieee754/ldbl-opt/nldbl-strfmon_l.c * sysdeps/ieee754/ldbl-opt/nldbl-strtold_l.c * sysdeps/ieee754/ldbl-opt/nldbl-wcstold_l.c * sysdeps/powerpc/powerpc32/power7/strcasecmp.S * sysdeps/powerpc/powerpc64/power7/strcasecmp.S * sysdeps/x86_64/strcasecmp_l-nonascii.c * sysdeps/x86_64/strncase_l-nonascii.c, time/strftime_l.c * time/strptime_l.c, time/time.h, wcsmbs/mbsrtowcs_l.c * wcsmbs/wchar.h, wcsmbs/wcscasecmp.c, wcsmbs/wcsncase.c * wcsmbs/wcstod.c, wcsmbs/wcstod_l.c, wcsmbs/wcstof.c * wcsmbs/wcstof_l.c, wcsmbs/wcstol_l.c, wcsmbs/wcstold.c * wcsmbs/wcstold_l.c, wcsmbs/wcstoll_l.c, wcsmbs/wcstoul_l.c * wcsmbs/wcstoull_l.c, wctype/iswctype_l.c * wctype/towctrans_l.c, wctype/wcfuncs_l.c * wctype/wctrans_l.c, wctype/wctype.h, wctype/wctype_l.c: Change all uses of __locale_t to locale_t.
* Rename xlocale.h to bits/types/__locale_t.h.Zack Weinberg2017-06-2036-112/+120
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | xlocale.h is already a single-type micro-header, defining struct __locale_struct and the typedefs __locale_t and locale_t. This patch brings it into the bits/types/ scheme: there are now bits/types/__locale_t.h which defines only __locale_struct and __locale_t, and bits/types/locale_t.h which defines locale_t as well as the other two. None of *our* headers need __locale_t.h, but it appears to me that libstdc++ could make use of it. There are a lot of external uses of xlocale.h, but all the uses I checked had an autoconf test or equivalent for its existence. It has never been available from other C libraries, and it has always contained a comment reading "This file is not standardized, don't rely on it, it can go away without warning" so I think dropping it is pretty safe. I also took the opportunity to clean up comments in various public header files that still talk about the *_l interfaces as though they were completely nonstandard. There are a few of them, notably the strtoX_l and wcstoX_l families, that haven't been standardized, but the bulk are in POSIX.1-2008. * locale/xlocale.h: Rename to... * locale/bits/types/__locale_t.h: ...here. Adjust commentary. Only define struct __locale_struct and __locale_t, not locale_t. * locale/bits/types/locale_t.h: New file; define locale_t here. * locale/Makefile (headers): Update to match. * include/xlocale.h: Delete wrapper. * include/bits/types/__locale_t.h: New wrapper. * include/bits/types/locale_t.h: New wrapper. * ctype/ctype.h, include/printf.h, include/time.h * locale/langinfo.h, locale/locale.h, stdlib/monetary.h * stdlib/stdlib.h, string/string.h, string/strings.h, time/time.h * wcsmbs/wchar.h, wctype/wctype.h: Use bits/types/locale_t.h. Correct outdated comments regarding the standardization status of the functions that take locale_t arguments. * stdlib/strtod_l.c, stdlib/strtof_l.c, stdlib/strtol_l.c * stdlib/strtold_l.c, stdlib/strtoul_l.c, stdlib/strtoull_l.c * sysdeps/ieee754/ldbl-128ibm/strtold_l.c * sysdeps/ieee754/ldbl-64-128/strtold_l.c * wcsmbs/wcstod.c, wcsmbs/wcstod_l.c, wcsmbs/wcstof.c * wcsmbs/wcstof_l.c, wcsmbs/wcstold.c, wcsmbs/wcstold_l.c: Don't include xlocale.h. If necessary, include locale.h instead. * stdlib/strtold_l.c: Unconditionally include wchar.h.
* Consolidate Linux openat implementationAdhemerval Zanella2017-06-205-38/+71
| | | | | | | | | | | | | | | | | | | | This patch consolidates the open Linux syscall implementation on sysdeps/unix/sysv/linux/open{64}.c. The changes are: 1. Remove wordsize-64 openat{64}. 2. For architetures that define __OFF_T_MATCHES_OFF64_T openat64 will be default one with alias to required symbols. Otherwise openat64 will pass the required O_LARGEFILE flag on syscall. Checked on i686-linux-gnu, x86_64-linux-gnu, x86_64-linux-gnux32, arch64-linux-gnu, arm-linux-gnueabihf, and powerpc64le-linux-gnu. * sysdeps/unix/sysv/linux/openat.c (__libc_openat): Build only for !__OFF_T_MATCHES_OFF64_T. * sysdeps/unix/sysv/linux/openat64.c (__libc_openat64): New implementation based on open64. * sysdeps/unix/sysv/linux/wordsize-64/openat.c: Remove file. * sysdeps/unix/sysv/linux/wordsize-64/openat64.c: Likewise.
* Move x86 specific tunables to x86/dl-tunables.listH.J. Lu2017-06-203-12/+39
| | | | | * elf/dl-tunables.list: Move x86 specific tunables to ... * sysdeps/x86/dl-tunables.list: Here. New file.
* conformtest: XFAIL uc_mcontext test for powerpc32 (bug 21635).Joseph Myers2017-06-204-3/+18
| | | | | | | | | | | | | | | This patch XFAILs one test where the powerpc32 ucontext_t has the wrong type of a field, to allow the conform/ tests as a whole to pass once the namespace issues are fixed. Tested with build-many-glibcs.py. [BZ #21635] * sysdeps/unix/sysv/linux/powerpc/powerpc32/Makefile [$(subdir) = conform] (conformtest-xfail-conds): New variable. * conform/data/signal.h-data (uc_mcontext): XFAIL for powerpc32-linux. * conform/data/ucontext.h-data (uc_mcontext): Likewise.
* conformtest: XFAIL uc_sigmask test for ia64 (bug 21634).Joseph Myers2017-06-204-3/+19
| | | | | | | | | | | | | | This patch XFAILs one test where the ia64 ucontext_t has the wrong type of a field, to allow the conform/ tests as a whole to pass once the namespace issues are fixed. Tested with build-many-glibcs.py. [BZ #21634] * sysdeps/unix/sysv/linux/ia64/Makefile [$(subdir) = conform] (conformtest-xfail-conds): New variable. * conform/data/signal.h-data (uc_sigmask): XFAIL for ia64-linux. * conform/data/ucontext.h-data (uc_sigmask): Likewise.
* Add powf traceWilco Dijkstra2017-06-202-0/+2191
| | | | | | | | Add a workload for powf. This is a reduced trace based on 2.3 billion samples extracted from wrf. The distribution of values, in particular frequency of commonly used operands is the same as in the full trace. * benchtests/powf-inputs: Add reduced trace from wrf.
* tunables: Add IFUNC selection and cache sizesH.J. Lu2017-06-208-1/+464
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The current IFUNC selection is based on microbenchmarks in glibc. It should give the best performance for most workloads. But other choices may have better performance for a particular workload or on the hardware which wasn't available at the selection was made. The environment variable, GLIBC_TUNABLES=glibc.tune.ifunc=-xxx,yyy,-zzz...., can be used to enable CPU/ARCH feature yyy, disable CPU/ARCH feature yyy and zzz, where the feature name is case-sensitive and has to match the ones in cpu-features.h. It can be used by glibc developers to override the IFUNC selection to tune for a new processor or improve performance for a particular workload. It isn't intended for normal end users. NOTE: the IFUNC selection may change over time. Please check all multiarch implementations when experimenting. Also, GLIBC_TUNABLES=glibc.tune.x86_non_temporal_threshold=NUMBER is provided to set threshold to use non temporal store to NUMBER, GLIBC_TUNABLES=glibc.tune.x86_data_cache_size=NUMBER to set data cache size, GLIBC_TUNABLES=glibc.tune.x86_shared_cache_size=NUMBER to set shared cache size. * elf/dl-tunables.list (tune): Add ifunc, x86_non_temporal_threshold, x86_data_cache_size and x86_shared_cache_size. * manual/tunables.texi: Document glibc.tune.ifunc, glibc.tune.x86_data_cache_size, glibc.tune.x86_shared_cache_size and glibc.tune.x86_non_temporal_threshold. * sysdeps/unix/sysv/linux/x86/dl-sysdep.c: New file. * sysdeps/x86/cpu-tunables.c: Likewise. * sysdeps/x86/cacheinfo.c (init_cacheinfo): Check and get data cache size, shared cache size and non temporal threshold from cpu_features. * sysdeps/x86/cpu-features.c [HAVE_TUNABLES] (TUNABLE_NAMESPACE): New. [HAVE_TUNABLES] Include <unistd.h>. [HAVE_TUNABLES] Include <elf/dl-tunables.h>. [HAVE_TUNABLES] (TUNABLE_CALLBACK (set_ifunc)): Likewise. [HAVE_TUNABLES] (init_cpu_features): Use TUNABLE_GET to set IFUNC selection, data cache size, shared cache size and non temporal threshold. * sysdeps/x86/cpu-features.h (cpu_features): Add data_cache_size, shared_cache_size and non_temporal_threshold.
* Improve math benchmark infrastructureWilco Dijkstra2017-06-203-18/+51
| | | | | | | | | | | | | | Improve support for math function benchmarking. This patch adds a feature that allows accurate benchmarking of traces extracted from real workloads. This is done by iterating over all samples rather than repeating each sample many times (which completely ignores branch prediction and cache effects). A trace can be added to existing math function inputs via "## name: workload-<name>", followed by the trace. * benchtests/README: Describe workload feature. * benchtests/bench-skeleton.c (main): Add support for benchmarking traces from workloads.
* Fix fallout from bits/string.h removal.Zack Weinberg2017-06-204-17/+12
| | | | | | | | | | | | | | | Remove one more string inline that was defined directly in string.h; in the absence of the rest of the inlines, it broke the build. Like other ifunc shims for these functions, x86_64/multiarch/{mem,st}pcpy.c need to define __NO_STRING_INLINES and NO_MEMPCPY_STPCPY_REDIRECT. * string/string.h (__mempcpy_inline): Delete. * sysdeps/x86_64/multiarch/mempcpy.c * sysdeps/x86_64/multiarch/stpcpy.c: Define NO_MEMPCPY_STPCPY_REDIRECT and __NO_STRING_INLINES before including string.h.
* Add powf bench testsPaul Clarke2017-06-203-1/+337
| | | | | | | | | | | | | | | | | | | | Add powf() bench test with input which covers these cases: - positive base to positive exponent - exponent 0 - negative base to even exponent - exponent 1 - exponent -1 - squared - squareroot - 1 to negative exponent - -1 to negative exponent - base 0 - -1 to even exponent - small base - small exponent * benchtests/Makefile (bench-math): Add powf. * benchtests/powf-inputs: New file.
* Mention in NEWS that __(NO|USE)_STRING_INLINES don't do anything anymore.Zack Weinberg2017-06-201-0/+4
|
* Remove bits/string.h.Zack Weinberg2017-06-2023-2452/+264
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These machine-dependent inline string functions have never been on by default, and even if they were a good idea at the time they were introduced, they haven't really been touched in ten to fifteen years and probably aren't a good idea on current-gen processors. Current thinking is that this class of optimization is best left to the compiler. * bits/string.h, string/bits/string.h * sysdeps/aarch64/bits/string.h * sysdeps/m68k/m680x0/m68020/bits/string.h * sysdeps/s390/bits/string.h, sysdeps/sparc/bits/string.h * sysdeps/x86/bits/string.h: Delete file. * string/string.h: Don't include bits/string.h. * string/bits/string3.h: Rename to bits/string_fortified.h. No need to undef various symbols that the removed headers might have defined as macros. * string/Makefile (headers): Remove bits/string.h, change bits/string3.h to bits/string_fortified.h. * string/string-inlines.c: Update commentary. Remove definitions of various macros that nothing looks at anymore. Don't directly include bits/string.h. Set _STRING_INLINE_unaligned here, based on compiler-predefined macros. * string/strncat.c: If STRNCAT is not defined, or STRNCAT_PRIMARY _is_ defined, provide internal hidden alias __strncat. * include/string.h: Declare internal hidden alias __strncat. Only forward __stpcpy to __builtin_stpcpy if __NO_STRING_INLINES is not defined. * include/bits/string3.h: Rename to bits/string_fortified.h, update to match above. * sysdeps/i386/string-inlines.c: Define compat symbols for everything formerly defined by sysdeps/x86/bits/string.h. Make existing definitions into compat symbols as well. Remove some no-longer-necessary messing around with macros. * sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c * sysdeps/powerpc/powerpc64/multiarch/mempcpy.c * sysdeps/powerpc/powerpc64/multiarch/stpcpy.c * sysdeps/s390/multiarch/mempcpy.c No need to define _HAVE_STRING_ARCH_mempcpy. Do define __NO_STRING_INLINES and NO_MEMPCPY_STPCPY_REDIRECT. * sysdeps/i386/i686/multiarch/strncat-c.c * sysdeps/s390/multiarch/strncat-c.c * sysdeps/x86_64/multiarch/strncat-c.c Define STRNCAT_PRIMARY. Don't change definition of libc_hidden_def.
* manual: Complete @standards in lang.texi.Rical Jasan2017-06-202-20/+43
| | | | | | | | | | | | | | | | | | | | | | | * manual/lang.texi (LDBL_MANT_DIG): Add annotation. (LDBL_DIG): Likewise. (LDBL_MIN_EXP): Likewise. (LDBL_MIN_10_EXP): Likewise. (LDBL_MAX_EXP): Likewise. (LDBL_MAX_10_EXP): Likewise. (LDBL_MAX): Likewise. (LDBL_MIN): Likewise. (LDBL_EPSILON): Likewise. (FLT_ROUNDS): Change standard from ISO to C90. (FLT_RADIX): Likewise. (FLT_MANT_DIG, DBL_MANT_DIG): Likewise. (FLT_DIG, DBL_DIG): Likewise. (FLT_MIN_EXP, DBL_MIN_EXP): Likewise. (FLT_MIN_10_EXP, DBL_MIN_10_EXP): Likewise. (FLT_MAX_EXP, DBL_MAX_EXP): Likewise. (FLT_MAX_10_EXP, DBL_MAX_10_EXP): Likewise. (FLT_MAX, DBL_MAX): Likewise. (FLT_MIN, DBL_MIN): Likewise. (FLT_EPSILON, DBL_EPSILON): Likewise.
* Remove pre-GCC-4.9 MIPS code.Joseph Myers2017-06-193-327/+52
| | | | | | | | | | | | | | This patch removes some MIPS code in glibc that was conditional on old GCC versions no longer supported for building glibc. Tested with build-many-glibcs.py. * sysdeps/mips/atomic-machine.h (R10K_BEQZ_INSN): Remove. [__GNUC_PREREQ (4, 8) || __mips16]: Make code unconditional. [!__GNUC_PREREQ (4, 8) && !__mips16]: Remove conditional code. * sysdeps/mips/math-tests.h [_MIPS_SIM != _ABIO32 && !__GNUC_PREREQ (4, 9)]: Remove conditional code.
* DCIGETTEXT: Do not make copy of localenameFlorian Weimer2017-06-192-1/+6
|
* ld.so: Reject overly long LD_AUDIT path elementsFlorian Weimer2017-06-192-15/+106
| | | | Also only process the last LD_AUDIT entry.
* ld.so: Reject overly long LD_PRELOAD path elementsFlorian Weimer2017-06-192-16/+73
|
* Fix wait3 namespace (bug 21625).Joseph Myers2017-06-192-1/+8
| | | | | | | | | | | | | | The wait3 function was removed in the 2001 edition of POSIX. sys/wait.h wrongly declares it for the 2001 and 2008 editions of POSIX when XSI features are enabled. This patch fixes the conditionals. Tested for x86_64. [BZ #21625] * posix/sys/wait.h (strust rusage forward declaration): Change [__USE_XOPEN_EXTENDED] conditional to [__USE_XOPEN_EXTENDED && !__USE_XOPEN2K]. (wait3): Likewise.
* Require GCC 4.9 or later for building glibc.Joseph Myers2017-06-196-6/+18
| | | | | | | | | | | | | | | | | | | This patch makes configure require GCC 4.9 or later for building glibc, and documents that requirement. Requiring GCC 4.9 or later allows use of _Generic (as in tzcode). It would allow <stdatomic.h> and _Atomic to be used as well if desired, although we need to avoid any libatomic dependencies on any platforms. This patch is explicitly the minimum to implement a new version requirement, with any consequent cleanups of conditional code (not in installed headers or files shared with gnulib etc.) to be done separately. Tested for x86_64. * configure.ac (libc_cv_compiler_ok): Require GCC 4.9 or later. * configure: Regenerated. * manual/install.texi (Tools for Compilation): Document requirement for GCC 4.9 or later. * INSTALL: Regenerated.
* CVE-2017-1000366: Ignore LD_LIBRARY_PATH for AT_SECURE=1 programs [BZ #21624]Florian Weimer2017-06-192-1/+9
| | | | | | | | LD_LIBRARY_PATH can only be used to reorder system search paths, which is not useful functionality. This makes an exploitable unbounded alloca in _dl_init_paths unreachable for AT_SECURE=1 programs.
* S390: Sync ptrace.h with kernel. [BZ #21539]Stefan Liebler2017-06-196-22/+182
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS as these requests does not exist on s390 kernel. But the kernel has support for PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA, PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE, PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND. Thus those are defined now. The current kernel s390 specific ptrace.h file also defines PTRACE_PEEKTEXT_AREA, PTRACE_PEEKDATA_AREA, PTRACE_POKETEXT_AREA, PTRACE_POKEDATA_AREA, PTRACE_PEEK_SYSTEM_CALL, PTRACE_POKE_SYSTEM_CALL and PTRACE_PROT, but those requests are not supported. Thus those defines are skipped in glibc ptrace.h. There were old includes of ptrace.h in sysdeps/s390/fpu/fesetenv.c. The ptrace feature isn't used there anymore, thus I removed the includes. Before this patch, <glibc>/sysdeps/unix/sysv/linux/s390/sys/ptrace.h uses ptrace-request 12 for PTRACE_GETREGS, but <kernel>/include/uapi/linux/ptrace.h uses 12 for PTRACE_SINGLEBLOCK. The s390 kernel has never had support for PTRACE_GETREGS! Thus glibc ptrace.h is adjusted to match kernel ptrace.h. The new s390 specific test ensures, that PTRACE_SINGLEBLOCK defined in glibc works as expected. If the kernel would interpret it as PTRACE_GETREGS, then the testcase will not make any progress and will time out. ChangeLog: [BZ #21539] * NEWS: Mention s390 ptrace request changes. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h (PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS, PTRACE_SETFPREGS): Remove enum constant. (PT_GETREGS, PT_SETREGS, PT_GETFPREGS, T_SETFPREGS): Remove defines. (PTRACE_SINGLEBLOCK): New enum constant. (PT_STEPBLOCK): New define. (PTRACE_PEEKUSR_AREA, PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE, PTRACE_DISABLE_TE, PTRACE_TE_ABORT_RAND): New enum constant and define. * sysdeps/s390/fpu/fesetenv.c: Remove ptrace.h includes. * sysdeps/unix/sysv/linux/s390/tst-ptrace-singleblock.c: New file. * sysdeps/unix/sysv/linux/s390/Makefile: Add test.
* resolv: Use getline for configuration file reading in res_vinit_1Florian Weimer2017-06-192-24/+49
|
* resolv: Report allocation errors in __res_vinitFlorian Weimer2017-06-194-34/+101
|
* resolv: Reformat res_vinit and related functions to GNU styleFlorian Weimer2017-06-192-334/+370
| | | | Also remove some obsolete comments.
* resolv: Introduce is_sort_mask and call it from res_vinitFlorian Weimer2017-06-192-5/+16
|
* resolv: Remove DEBUG preprocessor conditionals from res_setoptionsFlorian Weimer2017-06-192-21/+5
|
* resolv: Move _res deallocation functions to their own fileFlorian Weimer2017-06-194-56/+145
|
* resolv: Move res_randomid to its own fileFlorian Weimer2017-06-194-8/+99
|
* resolv: Make __res_vinit hiddenFlorian Weimer2017-06-194-5/+7
| | | | And remove unnecessary separate declarations.
* Fix another x86 sys/ucontext.h namespace issue (bug 21457).Joseph Myers2017-06-192-1/+5
| | | | | | | | | | | This patch fixes a namespace issue for one more field in the x86 sys/ucontext.h that I missed in my previous changes. Tested for x86_64. [BZ #21457] * sysdeps/unix/sysv/linux/x86/sys/ucontext.h [__x86_64__] (struct _libc_xmmreg): Use __ctx in defining field.
* Fix siginterrupt namespace (bug 21597).Joseph Myers2017-06-192-5/+9
| | | | | | | | | | | | | | The siginterrupt function is XSI-shaded in POSIX. glibc wrongly declares it in <signal.h> for non-XSI POSIX.1:2008. This patch fixes the conditionals (moving it into the __USE_XOPEN_EXTENDED || __USE_MISC block as the minimum conservative change, although it's not clear this obsolescent function should be declared by default). Tested for x86_64. [BZ #21597] * signal/signal.h (siginterrupt): Make declaration conditional on [__USE_XOPEN_EXTENDED || __USE_MISC].
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-21 09:37:50 +0000