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* <arpa/nameser.h>: Remove RR type classification macros [BZ #20592]Florian Weimer2016-09-213-11/+13
| | | | | | The macros are no longer up-to-date, and the classification is not useful. In this particular case, removal without prior deprecation seems the right approach.
* <arpa/nameser.h>, <arpa/nameser_compat.h>: Remove versionsFlorian Weimer2016-09-213-20/+6
| | | | Our header files no longer match the BIND versions.
* resolv: Remove the BIND_4_COMPAT macroFlorian Weimer2016-09-213-8/+8
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* Remove obsolete DNSSEC support [BZ #20591]Florian Weimer2016-09-215-320/+23
| | | | The removed function declaration have never been implemented in libresolv.
* manual: Clarify the documentation of strverscmp [BZ #20524]Florian Weimer2016-09-212-20/+55
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* Add test case for O_TMPFILE handling in open, openatFlorian Weimer2016-09-214-1/+239
| | | | | Also put xasprintf into test-skeleton.c (written in such a way that including <stdarg.h> is not needed).
* Avoid running $(CXX) during build to obtain header file pathsFlorian Weimer2016-09-215-6/+39
| | | | | This reduces the build time somewhat and is particularly noticeable during rebuilds with few code changes.
* Generate .op pattern rules for profiling builds onlyFlorian Weimer2016-09-212-1/+8
| | | | | | | .op pattern rules are not used in non-profiling builds. This does not cause any changes to both profiling and non-profiling builds.
* sln: Preprocessor cleanupsFlorian Weimer2016-09-212-15/+5
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* Fix old-style function definitionSamuel Thibault2016-09-202-4/+3
| | | | | * mach/errstring.c (mach_error_type, mach_error_string): Fix old-style function definition.
* mach: Fix old-style function definition.Samuel Thibault2016-09-202-3/+2
| | | | * mach/mach_error.c (mach_error): Fix old-style function definition.
* posix: Correctly block/unblock all signals on Linux posix_spawnAdhemerval Zanella2016-09-202-6/+6
| | | | | | | | | | | | | This patch correctly block and unblocks all signals when executing Linux posix_spawn by using the __libc_signal_{un}block_all functions instead of default sigprocmask. The latter might remove both SIGCANCEL and SIGSETXID from the blocked signal list. Checked on x86_64, i686, powerpc64le, and aarch64. * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Correctly block and unblock all signals when executing the clone vfork child. (SIGALL_SET): Remove macro.
* posix: Correctly enable/disable cancellation on Linux posix_spawnAdhemerval Zanella2016-09-204-3/+188
| | | | | | | | | | | | | | This patch correctly enable and disable asynchronous cancellation on Linux posix_spawn. Current code invert the logic by enabling and disabling instead. It also adds a new test to check if posix_spawn is not a cancellation entrypoint. Checked on x86_64, i686, powerpc64le, and aarch64. * nptl/Makefile (tests): Add tst-exec5. * nptl/tst-exec5.c: New file. * sysdeps/unix/sysv/linux/spawni.c (__spawni): Correctly enable and disable asynchronous cancellation.
* Fix exc2signal.c templateSamuel Thibault2016-09-202-12/+19
| | | | | | | | | As a follow-up to 0e3426bbcf2ff61d06d580fc9362fde79953a281 * hurd/exc2signal.c: #include <hurd/signal.h> (_hurd_exception2signal): Replace 'exception', 'code', 'subcode', 'sigcode', 'error' parameters with 'detail' parameter. Fix code accordingly.
* Build s_nan* objects from a generic templatePaul E. Murphy2016-09-2012-83/+42
| | | | | | | This requires adding a macro to synthesize the call to __strto*_nan. Since this is likely to be the only usage ever for strto* functions in generated libm calls, a dedicated macro is defined for it.
* Remove __nan{f,,l} macrosPaul E. Murphy2016-09-206-11/+12
| | | | | | Use the GCC builtin instead. With the exception of the files built from a template, they are unused. This is preparation for making the s_nanF objects generated.
* Make ldexpF generic.Paul E. Murphy2016-09-209-90/+115
| | | | | | | | | | | | | | | | | This one is a little more tricky since it is built both for libm and libc, and exports multiple aliases. To simplify aliasing, a new macro is introduced which handles aliasing to two symbols. By default, it just applies declare_mgen_alias to both target symbols. Likewise, the makefile is tweaked a little to generate templates for shared files too, and a new rule is added to build m_*.c objects from the objpfx directory. Verified there are no symbol or code changes using a script to diff the *_ldexp* object files on s390x, aarch64, arm, x86_64, and ppc64.
* Remove remnants of .og patternsFlorian Weimer2016-09-206-7/+9
| | | | | | | | | | | This was used by --enable-omitfp, and the bulk of it was removed in this commit: commit bdeba1354b7364d9b7857a048286a71ddbcdff86 Author: Ulrich Drepper <drepper@gmail.com> Date: Sat Jan 7 11:29:31 2012 -0500 Remove --enable-omitfp support
* sysd-rules: Cut down the number of rtld-% pattern rulesFlorian Weimer2016-09-202-0/+9
| | | | | | rtld only needs shared objects, so the other patterns are pointless and significantly increase the work make has to perform while identifying which pattern rule to apply.
* powerpc: Fix POWER9 impliesTulio Magno Quites Machado Filho2016-09-193-2/+9
| | | | | Fix multiarch build for POWER9 by correcting the order of the directories listed at sysnames configure variable.
* Add <limits.h> integer width macros.Joseph Myers2016-09-196-2/+212
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TS 18661-1 defines macros for the width of integer types, intended for use with the fromfp functions to convert from floating-point types to integer types of any width, in any rounding mode and with control over whether "inexact" is raised. Such macros are, of course, more generally useful than just with those functions. Those macros are added to <limits.h> and <stdint.h>. This patch adds the <limits.h> macros to glibc's header, with the <stdint.h> ones intended to be added in a separate patch (which would add to the NEWS entry created by this patch). I've also added these macros to GCC's headers for GCC 7, but definitions in glibc's <limits.h> are still useful for older GCC, for non-GNU compilers and for when it's _GNU_SOURCE rather than __STDC_WANT_IEC_60559_BFP_EXT__ that implies the macros should be defined since the GCC header only considers __STDC_WANT_IEC_60559_BFP_EXT__ (and for glibc systems, the definitions in GCC's <stdint.h> will only be used with -ffreestanding). Tested for x86_64 and x86. * include/limits.h: Define __GLIBC_INTERNAL_STARTING_HEADER_IMPLEMENTATION and include <bits/libc-header-start.h> instead of including <features.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (CHAR_WIDTH): New macro. [__GLIBC_USE (IEC_60559_BFP_EXT)] (SCHAR_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UCHAR_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (SHRT_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (USHRT_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (INT_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (UINT_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (LONG_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ULONG_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (LLONG_WIDTH): Likewise. [__GLIBC_USE (IEC_60559_BFP_EXT)] (ULLONG_WIDTH): Likewise. * manual/lang.texi (Width of Type): Document these macros. * stdlib/tst-width.c: New file. * stdlib/Makefile (tests): Add tst-width.
* hurd: fix fcntl visibilitySamuel Thibault2016-09-182-1/+2
| | | | * sysdeps/posix/dup.c (__dup): Call __fcntl instead of fcntl.
* hurd: fix pathconf visibilitySamuel Thibault2016-09-182-1/+5
| | | | * intl/dcigettext.c (PATH_MAX): Call __pathconf instead of pathconf.
* nptl: Consolidate sem_init implementationsAdhemerval Zanella2016-09-154-86/+8
| | | | | | | | | | | | | | Current sparc32 sem_init and default one only differ on sem.newsem.pad initialization. This patch removes sparc32 and sparc32v9 sem_init arch specific implementation and set sparc32 to use nptl default one. The default implementation sets the required sem.newsem.pad to 0 (which is ununsed in other architectures). I checked on i686 and a sparc32v9 build. * nptl/sem_init.c (sem_init): Init pad value to 0. * sysdeps/sparc/sparc32/sem_init.c: Remove file. * sysdeps/sparc/sparc32/sparcv9/sem_init.c: Likewise.
* rt: Set shm_open as a non cancellation point (BZ #18243)Adhemerval Zanella2016-09-154-1/+143
| | | | | | | | | | | | | This patch changes shm_open to not act as a cancellation point. Cancellation is disable at start and reenable in function exit. It fixes BZ #18243. Tested on x86_64 and i686. [BZ #18243] * rt/Makefile (test): Add tst-shm-cancel. * rt/tst-shm-cancel.c: New file. * sysdeps/posix/shm_open.c: Disable asynchronous cancellation.
* nptl: Fix sem_wait and sem_timedwait cancellation (BZ#18243)Adhemerval Zanella2016-09-159-52/+82
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes both sem_wait and sem_timedwait cancellation point for uncontended case. In this scenario only atomics are involved and thus the futex cancellable call is not issue and a pending cancellation signal is not handled. The fix is straighforward by calling pthread_testcancel is both function start. Although it would be simpler to call CANCELLATION_P directly, I decided to add an internal pthread_testcancel alias and use it to export less internal implementation on such function. A possible change on how pthread_testcancel is internally implemented would lead to either continue to force use CANCELLATION_P or to adjust its every use. GLIBC testcase also does have tests for uncontended cases, test-cancel12 and test-cancel14.c, however both are flawed by adding another cancellation point just after thread pthread_cleanup_pop: 47 static void * 48 tf (void *arg) 49 { 50 pthread_cleanup_push (cleanup, NULL); 51 52 int e = pthread_barrier_wait (&bar); 53 if (e != 0 && e != PTHREAD_BARRIER_SERIAL_THREAD) 54 { 55 puts ("tf: 1st barrier_wait failed"); 56 exit (1); 57 } 58 59 /* This call should block and be cancelable. */ 60 sem_wait (&sem); 61 62 pthread_cleanup_pop (0); 63 64 puts ("sem_wait returned"); 65 66 return NULL; 67 } So sem_{timed}wait does not act on cancellation, pthread_cleanup_pop executes 'cleanup' and then 'puts' acts on cancellation. Since pthread_cleanup_pop removed the clean-up handler, it will ran only once and thus it won't accuse an error to indicate sem_wait has not acted on the cancellation signal. This patch also fixes this behavior by removing the cancellation point 'puts'. It also adds some cleanup on all sem_{timed}wait cancel tests. It partially fixes BZ #18243. Checked on x86_64. [BZ #18243] * nptl/pthreadP.h (__pthread_testcancel): Add prototype and hidden_proto. * nptl/pthread_testcancel.c (pthread_cancel): Add internal aliais definition. * nptl/sem_timedwait.c (sem_timedwait): Add cancellation check for uncontended case. * nptl/sem_wait.c (__new_sem_wait): Likewise. * nptl/tst-cancel12.c (cleanup): Remove wrong cancellation point. (tf): Fix check for uncontended case. (do_test): Likewise. * nptl/tst-cancel13.c (cleanup): Remove wrong cancellation point. (tf): Fix check for uncontended case. (do_test): Likewise. * nptl/tst-cancel14.c (cleanup): Remove wrong cancellation point. (tf): Fix check for uncontended case. (do_test): Likewise. * nptl/tst-cancel15.c (cleanup): Remove wrong cancellation point. (tf): Fix check for uncontended case. (do_test): Likewise.
* nptl: Remove sparc sem_waitAdhemerval Zanella2016-09-153-94/+3
| | | | | | | | | | | This patch removes the sparc32 sem_wait.c implementation since it is identical to default nptl one. The sparcv9 is no longer required with the removal. Checked with a sparcv9 build. * sysdeps/sparc/sparc32/sem_wait.c: Remove file. * sysdeps/sparc/sparc32/sparcv9/sem_wait.c: Likewise.
* nptl: Set sem_open as a non cancellation point (BZ #15765)Adhemerval Zanella2016-09-154-5/+157
| | | | | | | | | | | | | This patch changes sem_open to not act as a cancellation point. Cancellation is disable at start and reenable in function exit. It fixes BZ #15765. Tested on x86_64 and i686. [BZ #15765] * nptl/Makefile (tests): Add tst-sem16. * nptl/tst-sem16.c: New file. * nptl/sem_open.c (sem_open): Disable asynchronous cancellation.
* nptl: Consolidate sem_open implementationsAdhemerval Zanella2016-09-154-301/+8
| | | | | | | | | | | | | | | | | | | | Current sparc32 sem_open and default one only differ on: 1. Default one contains a 'futex_supports_pshared' check. 2. sem.newsem.pad is initialized to zero. This patch removes sparc32 and sparc32v9 sem_open arch specific implementation and instead set sparc32 to use nptl default one. Using 1. is fine since it should always evaluate 0 for Linux (an optimized away by the compiler). Adding 2. to default implementation should be ok since 'pad' field is used mainly on sparc32 code. I checked on i686 and checked a sparc32v9 build. * nptl/sem_open.c (sem_open): Init pad value to 0. * sysdeps/sparc/sparc32/sem_open.c: Remove file. * sysdeps/sparc/sparc32/sparcv9/sem_open.c: Likewise.
* inet: Add __inet6_scopeid_pton function [BZ #20611]Florian Weimer2016-09-158-46/+257
| | | | | __inet6_scopeid_pton implements strict validation of numeric scope IDs. Use it in getaddrinfo and __res_vinit.
* Remove the ptw-% patternsFlorian Weimer2016-09-147-19/+38
| | | | | | | | | | Nothing depends on the PTW macro anymore, so the mechanism to define PTW for recompliations of libc routines is no longer needed. The source files are still recompiled for the nptl directory, just without the “ptw-” prefix. (Reducing the number of pattern rules in sysd-rules is critical for improving make performance.)
* ldbl-128: Use L(x) macro for long double constantsPaul E. Murphy2016-09-1351-3925/+3983
| | | | | | | | | | | | | | | | | | | | This runs the attached sed script against these files using a regex which aggressively matches long double literals when not obviously part of a comment. Likewise, 5 digit or less integral constants are replaced with integer constants, excepting the two cases of 0 used in large tables, which are also the only integral values of the form x.0*E0L encountered within these converted files. Likewise, -L(x) is transformed into L(-x). Naturally, the script has a few minor hiccups which are more clearly remedied via the attached fixup patch. Such hiccups include, context-sensitive promotion to a real type, and munging constants inside harder to detect comment blocks.
* resolv: Remove _LIBC_REENTRANTFlorian Weimer2016-09-132-2/+4
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* Add tests-static to tests in malloc/MakefileSiddhesh Poyarekar2016-09-102-2/+4
| | | | | | | | | | This is a trivial change to add the static tests only to tests-static and then adding all of tests-static to the tests target to make it look consistent with some other Makefiles. This avoids having to duplicate the test names across the two make targets. * malloc/Makefile (tests): Remove individual static test names and just add all of tests-static.
* Remove __libc_csu_irel declarationSiddhesh Poyarekar2016-09-102-3/+4
| | | | | | | | 21ad055803de5dd03606588753c46fbf8a5863b2 removed the function, but missed the declaration in libc-start. Removed and verified that the generated assembly is unchanged. * csu/libc-start.c (__libc_csu_irel): Remove declaration.
* Add e500 version of fetestexceptflag.Joseph Myers2016-09-072-0/+28
| | | | | | | | | | | | | | | When I added fetestexceptflag, I missed that e500 was another case that needed its own version because saved exceptions were not directly stored in a form that could be ANDed with exception bits (they were stored with exceptions in SPE form, but the FE_* macros always use the classic hard-float form). This patch adds an e500 version with the required call to __fexcepts_from_spe to convert from one form to the other. Tested for e500. * sysdeps/powerpc/powerpc32/e500/nofpu/fetestexceptflag.c: New file.
* Add femode_t functions: sparc.Joseph Myers2016-09-073-0/+67
| | | | | | | This patch adds SPARC versions of fegetmode and fesetmode. Untested. * sysdeps/sparc/fpu/fegetmode.c: New file. * sysdeps/sparc/fpu/fesetmode.c: Likewise.
* Add femode_t functions: sh.Joseph Myers2016-09-073-0/+68
| | | | | | | This patch adds SH versions of fegetmode and fesetmode. Untested. * sysdeps/sh/sh4/fpu/fegetmode.c: New file. * sysdeps/sh/sh4/fpu/fesetmode.c: Likewise.
* Add femode_t functions: s390.Joseph Myers2016-09-073-0/+69
| | | | | | | This patch adds S/390 versions of fegetmode and fesetmode. Untested. * sysdeps/s390/fpu/fegetmode.c: New file. * sysdeps/s390/fpu/fesetmode.c: Likewise.
* Add femode_t functions: powerpc.Joseph Myers2016-09-077-0/+229
| | | | | | | | | | | This patch adds PowerPC versions of fegetmode and fesetmode. * sysdeps/powerpc/fpu/fegetmode.c: New file. * sysdeps/powerpc/fpu/fesetmode.c: Likewise. * sysdeps/powerpc/nofpu/fegetmode.c: Likewise. * sysdeps/powerpc/nofpu/fesetmode.c: Likewise. * sysdeps/powerpc/powerpc32/e500/nofpu/fegetmode.c: Likewise. * sysdeps/powerpc/powerpc32/e500/nofpu/fesetmode.c: Likewise.
* Add femode_t functions: mips.Joseph Myers2016-09-073-0/+68
| | | | | | | This patch adds MIPS versions of fegetmode and fesetmode. * sysdeps/mips/fpu/fegetmode.c: New file. * sysdeps/mips/fpu/fesetmode.c: Likewise.
* Add femode_t functions: m68k.Joseph Myers2016-09-073-0/+62
| | | | | | | This patch adds M68K versions of fegetmode and fesetmode. Untested. * sysdeps/m68k/fpu/fegetmode.c: New file. * sysdeps/m69k/fpu/fesetmode.c: Likewise.
* Add femode_t functions: ia64.Joseph Myers2016-09-073-0/+71
| | | | | | | This patch adds IA64 versions of fegetmode and fesetmode. Untested. * sysdeps/ia64/fpu/fegetmode.c: New file. * sysdeps/ia64/fpu/fesetmode.c: Likewise.
* Add femode_t functions: hppa.Joseph Myers2016-09-073-0/+66
| | | | | | | This patch adds HPPA versions of fegetmode and fesetmode. Untested. * sysdeps/hppa/fpu/fegetmode.c: New file. * sysdeps/hppa/fpu/fesetmode.c: Likewise.
* Add femode_t functions: arm.Joseph Myers2016-09-073-0/+77
| | | | | | | This patch adds ARM versions of fegetmode and fesetmode. * sysdeps/arm/fegetmode.c: New file. * sysdeps/arm/fesetmode.c: Likewise.
* Add femode_t functions: alpha.Joseph Myers2016-09-073-0/+80
| | | | | | | This patch adds Alpha versions of fegetmode and fesetmode. Untested. * sysdeps/alpha/fpu/fegetmode.c: New file. * sysdeps/alpha/fpu/fesetmode.c: Likewise.
* Add femode_t functions: aarch64.Joseph Myers2016-09-073-0/+64
| | | | | | | | This patch adds AArch64 versions of fegetmode and fesetmode. Untested. * sysdeps/aarch64/fpu/fegetmode.c: New file. * sysdeps/aarch64/fpu/fesetmode.c: Likewise.
* Add femode_t functions.Joseph Myers2016-09-0761-5/+978
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TS 18661-1 defines a type femode_t to represent the set of dynamic floating-point control modes (such as the rounding mode and trap enablement modes), and functions fegetmode and fesetmode to manipulate those modes (without affecting other state such as the raised exception flags) and a corresponding macro FE_DFL_MODE. This patch series implements those interfaces for glibc. This first patch adds the architecture-independent pieces, the x86 and x86_64 implementations, and the <bits/fenv.h> and ABI baseline updates for all architectures so glibc keeps building and passing the ABI tests on all architectures. Subsequent patches add the fegetmode and fesetmode implementations for other architectures. femode_t is generally an integer type - the same type as fenv_t, or as the single element of fenv_t where fenv_t is a structure containing a single integer (or the single relevant element, where it has elements for both status and control registers) - except where architecture properties or consistency with the fenv_t implementation indicate otherwise. FE_DFL_MODE follows FE_DFL_ENV in whether it's a magic pointer value (-1 cast to const femode_t *), a value that can be distinguished from valid pointers by its high bits but otherwise contains a representation of the desired register contents, or a pointer to a constant variable (the powerpc case; __fe_dfl_mode is added as an exported constant object, an alias to __fe_dfl_env). Note that where architectures (that share a register between control and status bits) gain definitions of new floating-point control or status bits in future, the implementations of fesetmode for those architectures may need updating (depending on whether the new bits are control or status bits and what the implementation does with previously unknown bits), just like existing implementations of <fenv.h> functions that take care not to touch reserved bits may need updating when the set of reserved bits changes. (As any new bits are outside the scope of ISO C, that's just a quality-of-implementation issue for supporting them, not a conformance issue.) As with fenv_t, femode_t should properly include any software DFP rounding mode (and for both fenv_t and femode_t I'd consider that fragment of DFP support appropriate for inclusion in glibc even in the absence of the rest of libdfp; hardware DFP rounding modes should already be included if the definitions of which bits are status / control bits are correct). Tested for x86_64, x86, mips64 (hard float, and soft float to test the fallback version), arm (hard float) and powerpc (hard float, soft float and e500). Other architecture versions are untested. * math/fegetmode.c: New file. * math/fesetmode.c: Likewise. * sysdeps/i386/fpu/fegetmode.c: Likewise. * sysdeps/i386/fpu/fesetmode.c: Likewise. * sysdeps/x86_64/fpu/fegetmode.c: Likewise. * sysdeps/x86_64/fpu/fesetmode.c: Likewise. * math/fenv.h: Update comment on inclusion of <bits/fenv.h>. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fegetmode): New function declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (fesetmode): Likewise. * bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/m68k/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (__fe_dfl_mode): New variable declaration. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/tile/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)] (femode_t): New typedef. [__GLIBC_USE (IEC_60559_BFP_EXT)] (FE_DFL_MODE): New macro. * manual/arith.texi (FE_DFL_MODE): Document macro. (fegetmode): Document function. (fesetmode): Likewise. * math/Versions (fegetmode): New libm symbol at version GLIBC_2.25. (fesetmode): Likewise. * math/Makefile (libm-support): Add fegetmode and fesetmode. (tests): Add test-femode and test-femode-traps. * math/test-femode-traps.c: New file. * math/test-femode.c: Likewise. * sysdeps/powerpc/fpu/fenv_const.c (__fe_dfl_mode): Declare as alias for __fe_dfl_env. * sysdeps/powerpc/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/powerpc32/e500/nofpu/fenv_const.c (__fe_dfl_mode): Likewise. * sysdeps/powerpc/Versions (__fe_dfl_mode): New libm symbol at version GLIBC_2.25. * sysdeps/nacl/libm.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/arm/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/hppa/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/coldfire/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/m68k/m680x0/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/microblaze/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/nios2/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sh/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise.
* X86-64: Add _dl_runtime_resolve_avx[512]_{opt|slow} [BZ #20508]H.J. Lu2016-09-066-3/+190
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is transition penalty when SSE instructions are mixed with 256-bit AVX or 512-bit AVX512 load instructions. Since _dl_runtime_resolve_avx and _dl_runtime_profile_avx512 save/restore 256-bit YMM/512-bit ZMM registers, there is transition penalty when SSE instructions are used with lazy binding on AVX and AVX512 processors. To avoid SSE transition penalty, if only the lower 128 bits of the first 8 vector registers are non-zero, we can preserve %xmm0 - %xmm7 registers with the zero upper bits. For AVX and AVX512 processors which support XGETBV with ECX == 1, we can use XGETBV with ECX == 1 to check if the upper 128 bits of YMM registers or the upper 256 bits of ZMM registers are zero. We can restore only the non-zero portion of vector registers with AVX/AVX512 load instructions which will zero-extend upper bits of vector registers. This patch adds _dl_runtime_resolve_sse_vex which saves and restores XMM registers with 128-bit AVX store/load instructions. It is used to preserve YMM/ZMM registers when only the lower 128 bits are non-zero. _dl_runtime_resolve_avx_opt and _dl_runtime_resolve_avx512_opt are added and used on AVX/AVX512 processors supporting XGETBV with ECX == 1 so that we store and load only the non-zero portion of vector registers. This avoids SSE transition penalty caused by _dl_runtime_resolve_avx and _dl_runtime_profile_avx512 when only the lower 128 bits of vector registers are used. _dl_runtime_resolve_avx_slow is added and used for AVX processors which don't support XGETBV with ECX == 1. Since there is no SSE transition penalty on AVX512 processors which don't support XGETBV with ECX == 1, _dl_runtime_resolve_avx512_slow isn't provided. [BZ #20495] [BZ #20508] * sysdeps/x86/cpu-features.c (init_cpu_features): For Intel processors, set Use_dl_runtime_resolve_slow and set Use_dl_runtime_resolve_opt if XGETBV suports ECX == 1. * sysdeps/x86/cpu-features.h (bit_arch_Use_dl_runtime_resolve_opt): New. (bit_arch_Use_dl_runtime_resolve_slow): Likewise. (index_arch_Use_dl_runtime_resolve_opt): Likewise. (index_arch_Use_dl_runtime_resolve_slow): Likewise. * sysdeps/x86_64/dl-machine.h (elf_machine_runtime_setup): Use _dl_runtime_resolve_avx512_opt and _dl_runtime_resolve_avx_opt if Use_dl_runtime_resolve_opt is set. Use _dl_runtime_resolve_slow if Use_dl_runtime_resolve_slow is set. * sysdeps/x86_64/dl-trampoline.S: Include <cpu-features.h>. (_dl_runtime_resolve_opt): New. Defined for AVX and AVX512. (_dl_runtime_resolve): Add one for _dl_runtime_resolve_sse_vex. * sysdeps/x86_64/dl-trampoline.h (_dl_runtime_resolve_avx_slow): New. (_dl_runtime_resolve_opt): Likewise. (_dl_runtime_profile): Define only if _dl_runtime_profile is defined.
* S390: Support PLT and GOT references in check-localplt.Stefan Liebler2016-09-062-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | on s390x the test elf/check-localplt is failing after recent commits: "elf: Do not use memalign for TCB/TLS blocks allocation [BZ #17730]" "elf: Avoid using memalign for TLS allocations [BZ #17730]" "elf: dl-minimal malloc needs to respect fundamental alignment" due to "Missing required PLT reference: ld.so: __libc_memalign". After the commits __libc_memalign is only called in elf/dl-minimal.c in malloc() function in ld.so and gcc -O2/-O3 leads to R_390_GLOB_DAT instead of R_390_JMP_SLOT. __libc_memalign is called via function-pointer loaded from GOT instead of calling via a plt-stub. In this case there is the R_390_GLOB_DAT relocation in section .rela.dyn instead of R_390_JMP_SLOT in .rela.plt. This patch marks ld.so: __libc_memalign with R_390_GLOB_DAT in localplt.data to allow both relocations. If build with -fno-optimize-sibling-calls or on s390(31bit) a R_390_JMP_SLOT is generated. ChangeLog: * sysdeps/unix/sysv/linux/s390/localplt.data: Mark ld.so: __libc_memalign with "+ RELA R_390_GLOB_DAT".
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-08 01:12:08 +0000