402 Commits

Author	SHA1	Message	Date
Adhemerval Zanella	1c15464ca0	math: Remove inline math tests ... With mathinline removal there is no need to keep building and testing inline math tests. The gen-libm-tests.py support to generate ULP_I_* is removed and all libm-test-ulps files are updated to longer have the i{float,double,ldouble} entries. The support for no-test-inline is also removed from both gen-auto-libm-tests and the auto-libm-test-out-* were regenerated. Checked on x86_64-linux-gnu and i686-linux-gnu.	2020-03-19 11:45:44 -03:00
Florian Weimer	f4349837d9	Introduce <elf-initfini.h> and ELF_INITFINI for all architectures ... This supersedes the init_array sysdeps directory. It allows us to check for ELF_INITFINI in both C and assembler code, and skip DT_INIT and DT_FINI processing completely on newer architectures. A new header file is needed because <dl-machine.h> is incompatible with assembler code. <sysdep.h> is compatible with assembler code, but it cannot be included in all assembler files because on some architectures, it redefines register names, and some assembler files conflict with that. <elf-initfini.h> is replicated for legacy architectures which need DT_INIT/DT_FINI support. New architectures follow the generic default and disable it.	2020-02-18 15:12:25 +01:00
Adhemerval Zanella	bc2eb9321e	linux: Remove INTERNAL_SYSCALL_DECL ... With all Linux ABIs using the expected Linux kABI to indicate syscalls errors, the INTERNAL_SYSCALL_DECL is an empty declaration on all ports. This patch removes the 'err' argument on INTERNAL_SYSCALL* macro and remove the INTERNAL_SYSCALL_DECL usage. Checked with a build against all affected ABIs.	2020-02-14 21:12:45 -03:00
Adhemerval Zanella	fcb78a5505	linux: Consolidate INLINE_SYSCALL ... With all Linux ABIs using the expected Linux kABI to indicate syscalls errors, there is no need to replicate the INLINE_SYSCALL. The generic Linux sysdep.h includes errno.h even for !__ASSEMBLER__, which is ok now and it allows cleanup some archaic code that assume otherwise. Checked with a build against all affected ABIs.	2020-02-14 21:09:12 -03:00
Zack Weinberg	4988e26b94	MIPS: Fix circular definition of __LDBL_MANT_DIG__ in ieee754.h ... In commit aa706e13f4, sysdeps/mips/ieee754/ieee754.h was changed to use GCC’s predefined macro __LDBL_MANT_DIG__, instead of including <float.h> and using LDBL_MANT_DIG (and therefore polluting the user namespace with all of the macros defined in float.h). In order to support compilers that don’t provide __LDBL_MANT_DIG__, there is a fallback #if block which was supposed to include <float.h> and then define __LDBL_MANT_DIG__ to LDBL_MANT_DIG. However, at some point during the development of the patch, a typo was introduced, causing the fallback block to define __LDBL_MANT_DIG__ to expand to __LDBL_MANT_DIG__. Correct this typo.	2020-01-08 14:28:23 -05:00
Wilco Dijkstra	220622dde5	Add libm_alias_finite for _finite symbols ... This patch adds a new macro, libm_alias_finite, to define all _finite symbol. It sets all _finite symbol as compat symbol based on its first version (obtained from the definition at built generated first-versions.h). The <fn>f128_finite symbols were introduced in GLIBC 2.26 and so need special treatment in code that is shared between long double and float128. It is done by adding a list, similar to internal symbol redifinition, on sysdeps/ieee754/float128/float128_private.h. Alpha also needs some tricky changes to ensure we still emit 2 compat symbols for sqrt(f). Passes buildmanyglibc. Co-authored-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>	2020-01-03 10:02:04 -03:00
Joseph Myers	d614a75396	Update copyright dates with scripts/update-copyrights.	2020-01-01 00:14:33 +00:00
Tulio Magno Quites Machado Filho	1ef9b6e0bf	Do not redirect calls to __GI_* symbols, when redirecting to *ieee128 ... On platforms where long double has IEEE binary128 format as a third option (initially, only powerpc64le), many exported functions are redirected to their __*ieee128 equivalents. This redirection is provided by installed headers such as stdio-ldbl.h, and is supposed to work correctly with user code. However, during the build of glibc, similar redirections are employed, in internal headers, such as include/stdio.h, in order to avoid extra PLT entries. These redirections conflict with the redirections to __*ieee128, and must be avoided during the build. This patch protects the second redirections with a test for __LONG_DOUBLE_USES_FLOAT128, a new macro that is defined to 1 when functions that deal with long double typed values reuses the _Float128 implementation (this is currently only true for powerpc64le). Tested for powerpc64le, x86_64, and with build-many-glibcs.py. Co-authored-by: Gabriel F. T. Gomes <gabrielftg@linux.ibm.com> Reviewed-by: Florian Weimer <fweimer@redhat.com>	2019-12-27 15:02:10 -03:00
Adhemerval Zanella	7df8af43ad	nptl: Add struct_rwlock.h ... This patch adds a new generic __pthread_rwlock_arch_t definition meant to be used by new ports. Its layout mimics the current usage on some 64 bits ports and it allows some ports to use the generic definition. The arch __pthread_rwlock_arch_t definition is moved from pthreadtypes-arch.h to another arch-specific header (struct_rwlock.h). Also the static intialization macro for pthread_rwlock_t is set to use an arch defined on (__PTHREAD_RWLOCK_INITIALIZER) which simplifies its implementation. The default pthread_rwlock_t layout differs from current ports with: 1. Internal layout is the same for 32 bits and 64 bits. 2. Internal flag is an unsigned short so it should not required additional padding to align for word boundary (if it is the case for the ABI). Checked with a build on affected abis. Change-Id: I776a6a986c23199929d28a3dcd30272db21cd1d0	2019-11-26 13:53:36 +00:00
Adhemerval Zanella	1c3f9acf1f	nptl: Add struct_mutex.h ... The current way of defining the common mutex definition for POSIX and C11 on pthreadtypes-arch.h (added by commit 06be6368da) is not really the best options for newer ports. It requires define some misleading flags that should be always defined as 0 (__PTHREAD_COMPAT_PADDING_MID and __PTHREAD_COMPAT_PADDING_END), it exposes options used solely for linuxthreads compat mode (__PTHREAD_MUTEX_USE_UNION and __PTHREAD_MUTEX_NUSERS_AFTER_KIND), and requires newer ports to explicit define them (adding more boilerplate code). This patch adds a new default __pthread_mutex_s definition meant to be used by newer ports. Its layout mimics the current usage on both 32 and 64 bits ports and it allows most ports to use the generic definition. Only ports that use some arch-specific definition (such as hardware lock-elision or linuxthreads compat) requires specific headers. For 32 bit, the generic definitions mimic the other 32-bit ports of using an union to define the fields uses on adaptive and robust mutexes (thus not allowing both usage at same time) and by using a single linked-list for robust mutexes. Both decisions seemed to follow what recent ports have done and make the resulting pthread_mutex_t/mtx_t object smaller. Also the static intialization macro for pthread_mutex_t is set to use a macro __PTHREAD_MUTEX_INITIALIZER where the architecture can redefine in its struct_mutex.h if it requires additional fields to be initialized. Checked with a build on affected abis. Change-Id: I30a22c3e3497805fd6e52994c5925897cffcfe13	2019-11-26 13:53:36 +00:00
Adhemerval Zanella	0377a7fde6	nptl: Remove rwlock elision definitions ... The new rwlock implementation added by cc25c8b4c1 (2.25) removed support for lock-elision. This patch removes remaining the arch-specific unused definitions. Checked with a build against all affected ABIs. Change-Id: I5dec8af50e3cd56d7351c52ceff4aa3771b53cd6	2019-11-26 13:53:36 +00:00
Adhemerval Zanella	48dbce60cf	nptl: Add tests for internal pthread_rwlock_t offsets ... This patch new build tests to check for internal fields offsets for internal pthread_rwlock_t definition. Althoug the '__data.__flags' field layout should be preserved due static initializators, the patch also adds tests for the futexes that may be used in a shared memory (although using different libc version in such scenario is not really supported). Checked with a build against all affected ABIs. Change-Id: Iccc103d557de13d17e4a3f59a0cad2f4a640c148	2019-11-26 13:53:36 +00:00
Adhemerval Zanella	71d260c107	nptl: Cleanup mutex internal offset tests ... The offsets of pthread_mutex_t __data.__nusers, __data.__spins, __data.elision, __data.list are not required to be constant over the releases. Only the __data.__kind is used for static initializers. This patch also adds an additional size check for __data.__kind. Checked with a build against affected ABIs. Change-Id: I7a4e48cc91b4c4ada57e9a5d1b151fb702bfaa9f	2019-11-26 13:53:36 +00:00
Alistair Francis	aa706e13f4	Split up endian.h to minimize exposure of BYTE_ORDER. ... With only two exceptions (sys/types.h and sys/param.h, both of which historically might have defined BYTE_ORDER) the public headers that include <endian.h> only want to be able to test __BYTE_ORDER against __*_ENDIAN. This patch creates a new bits/endian.h that can be included by any header that wants to be able to test __BYTE_ORDER and/or __FLOAT_WORD_ORDER against the __*_ENDIAN constants, or needs __LONG_LONG_PAIR. It only defines macros in the implementation namespace. The existing bits/endian.h (which could not be included independently of endian.h, and only defines __BYTE_ORDER and maybe __FLOAT_WORD_ORDER) is renamed to bits/endianness.h. I also took the opportunity to canonicalize the form of this header, which we are stuck with having one copy of per architecture. Since they are so short, this means git doesn’t understand that they were renamed from existing headers, sigh. endian.h itself is a nonstandard header and its only remaining use from a standard header is guarded by __USE_MISC, so I dropped the __USE_MISC conditionals from around all of the public-namespace things it defines. (This means, an application that requests strict library conformance but includes endian.h will still see the definition of BYTE_ORDER.) A few changes to specific bits/endian(ness).h variants deserve mention: - sysdeps/unix/sysv/linux/ia64/bits/endian.h is moved to sysdeps/ia64/bits/endianness.h. If I remember correctly, ia64 did have selectable endianness, but we have assembly code in sysdeps/ia64 that assumes it’s little-endian, so there is no reason to treat the ia64 endianness.h as linux-specific. - The C-SKY port does not fully support big-endian mode, the compile will error out if __CSKYBE__ is defined. - The PowerPC port had extra logic in its bits/endian.h to detect a broken compiler, which strikes me as unnecessary, so I removed it. - The only files that defined __FLOAT_WORD_ORDER always defined it to the same value as __BYTE_ORDER, so I removed those definitions. The SH bits/endian(ness).h had comments inconsistent with the actual setting of __FLOAT_WORD_ORDER, which I also removed. - I *removed* copyright boilerplate from the few bits/endian(ness).h headers that had it; these files record a single fact in a fashion dictated by an external spec, so I do not think they are copyrightable. As long as I was changing every copy of ieee754.h in the tree, I noticed that only the MIPS variant includes float.h, because it uses LDBL_MANT_DIG to decide among three different versions of ieee854_long_double. This patch makes it not include float.h when GCC’s intrinsic __LDBL_MANT_DIG__ is available. * string/endian.h: Unconditionally define LITTLE_ENDIAN, BIG_ENDIAN, PDP_ENDIAN, and BYTE_ORDER. Condition byteswapping macros only on !__ASSEMBLER__. Move the definitions of __BIG_ENDIAN, __LITTLE_ENDIAN, __PDP_ENDIAN, __FLOAT_WORD_ORDER, and __LONG_LONG_PAIR to... * string/bits/endian.h: ...this new file, which includes the renamed header bits/endianness.h for the definition of __BYTE_ORDER and possibly __FLOAT_WORD_ORDER. * string/Makefile: Install bits/endianness.h. * include/bits/endian.h: New wrapper. * bits/endian.h: Rename to bits/endianness.h. Add multiple-include guard. Rewrite the comment explaining what the machine-specific variants of this file should do. * sysdeps/unix/sysv/linux/ia64/bits/endian.h: Move to sysdeps/ia64. * sysdeps/aarch64/bits/endian.h * sysdeps/alpha/bits/endian.h * sysdeps/arm/bits/endian.h * sysdeps/csky/bits/endian.h * sysdeps/hppa/bits/endian.h * sysdeps/ia64/bits/endian.h * sysdeps/m68k/bits/endian.h * sysdeps/microblaze/bits/endian.h * sysdeps/mips/bits/endian.h * sysdeps/nios2/bits/endian.h * sysdeps/powerpc/bits/endian.h * sysdeps/riscv/bits/endian.h * sysdeps/s390/bits/endian.h * sysdeps/sh/bits/endian.h * sysdeps/sparc/bits/endian.h * sysdeps/x86/bits/endian.h: Rename to endianness.h; canonicalize form of file; remove redundant definitions of __FLOAT_WORD_ORDER. * sysdeps/powerpc/bits/endianness.h: Remove logic to check for broken compilers. * ctype/ctype.h * sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h * sysdeps/arm/nptl/bits/pthreadtypes-arch.h * sysdeps/csky/nptl/bits/pthreadtypes-arch.h * sysdeps/ia64/ieee754.h * sysdeps/ieee754/ieee754.h * sysdeps/ieee754/ldbl-128/ieee754.h * sysdeps/ieee754/ldbl-128ibm/ieee754.h * sysdeps/m68k/nptl/bits/pthreadtypes-arch.h * sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h * sysdeps/mips/ieee754/ieee754.h * sysdeps/mips/nptl/bits/pthreadtypes-arch.h * sysdeps/nios2/nptl/bits/pthreadtypes-arch.h * sysdeps/nptl/pthread.h * sysdeps/riscv/nptl/bits/pthreadtypes-arch.h * sysdeps/sh/nptl/bits/pthreadtypes-arch.h * sysdeps/sparc/sparc32/ieee754.h * sysdeps/unix/sysv/linux/generic/bits/stat.h * sysdeps/unix/sysv/linux/generic/bits/statfs.h * sysdeps/unix/sysv/linux/sys/acct.h * wctype/bits/wctype-wchar.h: Include bits/endian.h, not endian.h. * sysdeps/unix/sysv/linux/hppa/pthread.h: Don’t include endian.h. * sysdeps/mips/ieee754/ieee754.h: Use __LDBL_MANT_DIG__ in ifdefs, instead of LDBL_MANT_DIG. Only include float.h when __LDBL_MANT_DIG__ is not predefined, in which case define __LDBL_MANT_DIG__ to equal LDBL_MANT_DIG.	2019-10-01 14:54:46 -07:00
Paul Eggert	5a82c74822	Prefer https to http for gnu.org and fsf.org URLs ... Also, change sources.redhat.com to sourceware.org. This patch was automatically generated by running the following shell script, which uses GNU sed, and which avoids modifying files imported from upstream: sed -ri ' s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g ' \ $(find $(git ls-files) -prune -type f \ ! -name '*.po' \ ! -name 'ChangeLog*' \ ! -path COPYING ! -path COPYING.LIB \ ! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \ ! -path manual/texinfo.tex ! -path scripts/config.guess \ ! -path scripts/config.sub ! -path scripts/install-sh \ ! -path scripts/mkinstalldirs ! -path scripts/move-if-change \ ! -path INSTALL ! -path locale/programs/charmap-kw.h \ ! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \ ! '(' -name configure \ -execdir test -f configure.ac -o -f configure.in ';' ')' \ ! '(' -name preconfigure \ -execdir test -f preconfigure.ac ';' ')' \ -print) and then by running 'make dist-prepare' to regenerate files built from the altered files, and then executing the following to cleanup: chmod a+x sysdeps/unix/sysv/linux/riscv/configure # Omit irrelevant whitespace and comment-only changes, # perhaps from a slightly-different Autoconf version. git checkout -f \ sysdeps/csky/configure \ sysdeps/hppa/configure \ sysdeps/riscv/configure \ sysdeps/unix/sysv/linux/csky/configure # Omit changes that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines git checkout -f \ sysdeps/powerpc/powerpc64/ppc-mcount.S \ sysdeps/unix/sysv/linux/s390/s390-64/syscall.S # Omit change that caused a pre-commit check to fail like this: # remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S	2019-09-07 02:43:31 -07:00
Mihailo Stojanovic	23c1c256ae	MIPS support for GNU hash ... 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.	2019-08-29 20:11:42 +00:00
Paul Eggert	1bced8cadc	Don't put non-ASCII into installed headers ... 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	2019-08-23 14:19:40 -07:00
Paul Eggert	e6855a3bdf	Fix spellings of contributor names in comments and doc	2019-08-23 13:11:05 -07:00
Mihailo Stojanovic	edd8d70b91	[MIPS] Raise highest supported EI_ABIVERSION value [BZ #24916] ... 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.	2019-08-23 16:47:27 +00:00
Joseph Myers	0175c9e9be	Declare most TS 18661-1 interfaces for C2X. ... C2X adds the interfaces from TS 18661-1, and all except a handful in Annex F are unconditionally visible in C2X rather than only visible when __STDC_WANT_IEC_60559_BFP_EXT__ is defined. This patch updates glibc headers accordingly: most uses of __GLIBC_USE (IEC_60559_BFP_EXT) are changed to a new __GLIBC_USE (IEC_60559_BFP_EXT_C2X). (Regarding totalorder and totalordermag, the type-generic macros in tgmath.h will go away when the functions are changed to take pointer arguments.) * bits/libc-header-start.h (__GLIBC_USE_IEC_60559_BFP_EXT): Update comment. (__GLIBC_USE_IEC_60559_BFP_EXT_C2X): New macro. * bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Change to [__GLIBC_USE (IEC_60559_BFP_EXT_C2X)]. * include/limits.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * math/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * math/math.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * stdlib/bits/stdlib-ldbl.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * stdlib/stdint.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * stdlib/stdlib.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/aarch64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/alpha/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/arm/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/csky/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/hppa/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/ia64/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/m68k/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/microblaze/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/mips/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/nios2/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/powerpc/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/riscv/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/s390/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/sh/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/sparc/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * sysdeps/x86/fpu/bits/fenv.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise. * math/bits/mathcalls.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise, except for totalorder, totalordermag, getpayload, setpayload and setpayloadsig. * math/tgmath.h [__GLIBC_USE (IEC_60559_BFP_EXT)]: Likewise, except for totalorder and totalordermag.	2019-08-13 11:28:51 +00:00
Joseph Myers	e0cb7b6131	Add and move fall-through comments in system-specific code. ... This patch fixes -Wimplicit-fallthrough warnings in system-specific code that show up building glibc with -Wextra, by adding fall-through comments, or moving existing such comments to the place required for them to work (immediately before the case label being fallen through). Tested with build-many-glibcs.py. * sysdeps/i386/dl-machine.h (elf_machine_rela): Add fall-through comments. * sysdeps/m68k/m680x0/fpu/s_cexp_template.c (s(__cexp)): Likewise. * sysdeps/m68k/memcopy.h (WORD_COPY_FWD): Likewise. (WORD_COPY_BWD): Likewise. * sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise. * sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/s390/iso-8859-1_cp037_z900.c (TR_LOOP): Likewise. * sysdeps/mips/dl-machine.h (elf_machine_reloc): Move fall-through comment. * sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise.	2019-02-26 02:09:18 +00:00
Joseph Myers	a04549c194	Break more lines before not after operators. ... This patch makes further coding style fixes where code was breaking lines after an operator, contrary to the GNU Coding Standards. As with the previous patch, it is limited to files following a reasonable approximation to GNU style already, and is not exhaustive; more such issues remain to be fixed. Tested for x86_64, and with build-many-glibcs.py. * dirent/dirent.h [!_DIRENT_HAVE_D_NAMLEN && _DIRENT_HAVE_D_RECLEN] (_D_ALLOC_NAMLEN): Break lines before rather than after operators. * elf/cache.c (print_cache): Likewise. * gshadow/fgetsgent_r.c (__fgetsgent_r): Likewise. * htl/pt-getattr.c (__pthread_getattr_np): Likewise. * hurd/hurdinit.c (_hurd_setproc): Likewise. * hurd/hurdkill.c (_hurd_sig_post): Likewise. * hurd/hurdlookup.c (__file_name_lookup_under): Likewise. * hurd/hurdsig.c (_hurd_internal_post_signal): Likewise. (reauth_proc): Likewise. * hurd/lookup-at.c (__file_name_lookup_at): Likewise. (__file_name_split_at): Likewise. (__directory_name_split_at): Likewise. * hurd/lookup-retry.c (__hurd_file_name_lookup_retry): Likewise. * hurd/port2fd.c (_hurd_port2fd): Likewise. * iconv/gconv_dl.c (do_print): Likewise. * inet/netinet/in.h (struct sockaddr_in): Likewise. * libio/wstrops.c (_IO_wstr_seekoff): Likewise. * locale/setlocale.c (new_composite_name): Likewise. * malloc/memusagestat.c (main): Likewise. * misc/fstab.c (fstab_convert): Likewise. * nptl/pthread_mutex_unlock.c (__pthread_mutex_unlock_usercnt): Likewise. * nss/nss_compat/compat-grp.c (getgrent_next_nss): Likewise. (getgrent_next_file): Likewise. (internal_getgrnam_r): Likewise. (internal_getgrgid_r): Likewise. * nss/nss_compat/compat-initgroups.c (getgrent_next_nss): Likewise. (internal_getgrent_r): Likewise. * nss/nss_compat/compat-pwd.c (getpwent_next_nss_netgr): Likewise. (getpwent_next_nss): Likewise. (getpwent_next_file): Likewise. (internal_getpwnam_r): Likewise. (internal_getpwuid_r): Likewise. * nss/nss_compat/compat-spwd.c (getspent_next_nss_netgr): Likewise. (getspent_next_nss): Likewise. (internal_getspnam_r): Likewise. * pwd/fgetpwent_r.c (__fgetpwent_r): Likewise. * shadow/fgetspent_r.c (__fgetspent_r): Likewise. * string/strchr.c (STRCHR): Likewise. * string/strchrnul.c (STRCHRNUL): Likewise. * sysdeps/aarch64/fpu/fpu_control.h (_FPU_FPCR_IEEE): Likewise. * sysdeps/aarch64/sfp-machine.h (_FP_CHOOSENAN): Likewise. * sysdeps/csky/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/generic/memcopy.h (PAGE_COPY_FWD_MAYBE): Likewise. * sysdeps/generic/symbol-hacks.h (__stack_chk_fail_local): Likewise. * sysdeps/gnu/netinet/ip_icmp.h (ICMP_INFOTYPE): Likewise. * sysdeps/gnu/updwtmp.c (TRANSFORM_UTMP_FILE_NAME): Likewise. * sysdeps/gnu/utmp_file.c (TRANSFORM_UTMP_FILE_NAME): Likewise. * sysdeps/hppa/jmpbuf-unwind.h (_JMPBUF_UNWINDS): Likewise. * sysdeps/mach/hurd/bits/stat.h (S_ISPARE): Likewise. * sysdeps/mach/hurd/dl-sysdep.c (_dl_sysdep_start): Likewise. (open_file): Likewise. * sysdeps/mach/hurd/htl/pt-mutexattr-setprotocol.c (pthread_mutexattr_setprotocol): Likewise. * sysdeps/mach/hurd/ioctl.c (__ioctl): Likewise. * sysdeps/mach/hurd/mmap.c (__mmap): Likewise. * sysdeps/mach/hurd/ptrace.c (ptrace): Likewise. * sysdeps/mach/hurd/spawni.c (__spawni): Likewise. * sysdeps/microblaze/dl-machine.h (elf_machine_type_class): Likewise. (elf_machine_rela): Likewise. * sysdeps/mips/mips32/sfp-machine.h (_FP_CHOOSENAN): Likewise. * sysdeps/mips/mips64/sfp-machine.h (_FP_CHOOSENAN): Likewise. * sysdeps/mips/sys/asm.h (multiple #if conditionals): Likewise. * sysdeps/posix/rename.c (rename): Likewise. * sysdeps/powerpc/novmx-sigjmp.c (__novmx__sigjmp_save): Likewise. * sysdeps/powerpc/sigjmp.c (__vmx__sigjmp_save): Likewise. * sysdeps/s390/fpu/fenv_libc.h (FPC_VALID_MASK): Likewise. * sysdeps/s390/utf8-utf16-z9.c (gconv_end): Likewise. * sysdeps/unix/grantpt.c (grantpt): Likewise. * sysdeps/unix/sysv/linux/a.out.h (N_TXTOFF): Likewise. * sysdeps/unix/sysv/linux/updwtmp.c (TRANSFORM_UTMP_FILE_NAME): Likewise. * sysdeps/unix/sysv/linux/utmp_file.c (TRANSFORM_UTMP_FILE_NAME): Likewise. * sysdeps/x86/cpu-features.c (get_common_indices): Likewise. * time/tzfile.c (__tzfile_compute): Likewise.	2019-02-25 13:19:19 +00:00
Joseph Myers	2ce09e0187	Update MIPS libm-test-ulps. ... * sysdeps/mips/mips32/libm-test-ulps: Update. * sysdeps/mips/mips64/libm-test-ulps: Likewise.	2019-01-02 17:25:33 +00:00
Joseph Myers	04277e02d7	Update copyright dates with scripts/update-copyrights. ... * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.	2019-01-01 00:11:28 +00:00
Joseph Myers	0c096dcf14	Fix mips build with GCC 9. ... This patch fixes the build for MIPS (o32) with GCC 9 by stopping MIPS __longjmp from using strong_alias, instead defining the alias manually, so that the intended effect of not copying the nomips16 attribute is achieved, as explained in the included comment. Tested with build-many-glibcs.py compilers build for mips64-linux-gnu (which includes glibc builds for all three ABIs). * sysdeps/mips/__longjmp.c (__longjmp): Define alias manually with alias attribute, not with strong_alias.	2018-11-13 01:55:15 +00:00
Fredrik Noring	8e3c00db16	MIPS: Use `.set mips2' to emulate LL/SC for the R5900 too ... GAS treats the R5900 as MIPS III, with some modifications. The MIPS III designation means that the GNU C Library will try to assemble the LL and SC instructions, even though they are not implemented in the R5900. GAS will therefore produce the following errors: Error: opcode not supported on this processor: r5900 (mips3) `ll $2,0($4)' Error: opcode not supported on this processor: r5900 (mips3) `sc $6,0($4)' The MIPS II ISA override as used here enables the kernel to trap and emulate the LL and SC instructions, as required. This change has been tested by compiling the GNU C Library 2.27 with a GCC 8.2.0 cross-compiler for mipsr5900el-unknown-linux-gnu under Gentoo. * sysdeps/mips/sys/tas.h (_test_and_set): Handle the R5900 CPU with the ISA override.	2018-11-01 14:36:48 +00:00
Joseph Myers	ff6b24501f	Split fenv_private.h out of math_private.h more consistently. ... On some architectures, the parts of math_private.h relating to the floating-point environment are in a separate file fenv_private.h included from math_private.h. As this is purely an architecture-specific convention used by several architectures, however, all such architectures still need their own math_private.h, even if it has nothing to do beyond #include <fenv_private.h> and peculiarity of including the i386 file directly instead of having a shared file in sysdeps/x86. This patch makes the fenv_private.h name an architecture-independent convention in glibc. The include of fenv_private.h from math_private.h becomes architecture-independent (until callers are updated to include fenv_private.h directly so the include from math_private.h is no longer needed). Some architecture math_private.h headers are removed if no longer needed, or renamed to fenv_private.h if all they define belongs in that header; architecture fenv_private.h headers now do require #include_next <fenv_private.h>. The i386 fenv_private.h file moves to sysdeps/x86/fpu/ to reflect how it is actually shared with x86_64. The generic math_private.h gets a new include of <stdbool.h>, as needed for bool in some prototypes in that header (previously that was indirectly included via include/fenv.h, which now only gets included too late in math_private.h, after those prototypes). Tested for x86_64 and x86, and tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/aarch64/fpu/fenv_private.h: New file. Based on .... * sysdeps/aarch64/fpu/math_private.h: ... this file. All contents moved to fenv_private.h except for ... (TOINT_INTRINSICS): Kept in math_private.h. (roundtoint): Likewise. (converttoint): Likewise. * sysdeps/arm/fenv_private.h: Change multiple-include guard to [ARM_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/arm/math_private.h: Remove. * sysdeps/generic/fenv_private.h: New file. Contents moved from .... * sysdeps/generic/math_private.h: ... this file. Include <stdbool.h>. Do not include <fenv.h> or <get-rounding-mode.h>. Include <fenv_private.h>. Remove functions and macros moved to fenv_private.h. * sysdeps/i386/fpu/math_private.h: Remove. * sysdeps/mips/math_private.h: Move to .... * sysdeps/mips/fpu/fenv_private.h: ... here. Change multiple-include guard to [MIPS_FENV_PRIVATE_H]. Remove [__mips_hard_float] conditional. Include next <fenv_private.h>. * sysdeps/powerpc/fpu/fenv_private.h: Change multiple-include guard to [POWERPC_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/powerpc/fpu/math_private.h: Do not include <fenv_private.h>. * sysdeps/riscv/rvf/math_private.h: Move to .... * sysdeps/riscv/rvf/fenv_private.h: ... here. Change multiple-include guard to [RISCV_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/sparc/fpu/fenv_private.h: Change multiple-include guard to [SPARC_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/sparc/fpu/math_private.h: Remove. * sysdeps/i386/fpu/fenv_private.h: Move to .... * sysdeps/x86/fpu/fenv_private.h: ... here. Change multiple-include guard to [X86_FENV_PRIVATE_H]. Include next <fenv_private.h>. * sysdeps/x86_64/fpu/math_private.h: Do not include <sysdeps/i386/fpu/fenv_private.h>.	2018-08-28 20:48:49 +00:00
Joseph Myers	60bcac09c0	Move EXCEPTION_TESTS_* out of math-tests.h ... Continuing moving macros out of math-tests.h to smaller headers following typo-proof conventions instead of using #ifndef, this patch moves the EXCEPTION_TESTS_* macros for individual types out to their own sysdeps header. As with ROUNDING_TESTS_*, there is no need to define these macros if FE_ALL_EXCEPT == 0 and the individual exception macros are undefined; thus, math-tests-exceptions.h headers are only needed for soft-float ARM and RISC-V, while the other cases that defined these macros do not need to do so (and the associated math-tests.h headers are thus removed without needing replacement by math-tests-exceptions.h headers). Tested with build-many-glibcs.py. * sysdeps/generic/math-tests-exceptions.h: New file. * sysdeps/generic/math-tests.h: Include <math-tests-exceptions.h>. (EXCEPTION_TESTS_float): Do not define here. (EXCEPTION_TESTS_double): Likewise. (EXCEPTION_TESTS_long_double): Likewise. (EXCEPTION_TESTS_float128): Likewise. * sysdeps/arm/math-tests.h [__SOFTFP__] (EXCEPTION_TESTS_float): Likewise. [__SOFTFP__] (EXCEPTION_TESTS_double): Likewise. [__SOFTFP__] (EXCEPTION_TESTS_long_double): Likewise. * sysdeps/arm/nofpu/math-tests-exceptions.h: New file. * sysdeps/m68k/coldfire/math-tests.h: Remove file. * sysdeps/mips/math-tests.h: Likewise. * sysdeps/nios2/math-tests.h: Likewise. * sysdeps/riscv/math-tests.h [!__riscv_flen] (EXCEPTION_TESTS_float): Do not define here. [!__riscv_flen] (EXCEPTION_TESTS_double): Likewise. [!__riscv_flen] (EXCEPTION_TESTS_long_double): Likewise. * sysdeps/riscv/nofpu/math-tests-exceptions.h: New file.	2018-08-23 23:41:13 +00:00
Joseph Myers	16a25138c1	Move ROUNDING_TESTS_* out of math-tests.h. ... Continuing moving macros out of math-tests.h to smaller headers following typo-proof conventions instead of using #ifndef, this patch moves the ROUNDING_TESTS_* macros for individual types out to their own sysdeps header. In the soft-float case where FE_TONEAREST is the only rounding mode macro defined, there is no need to define ROUNDING_TESTS_*; it is only necessary when rounding modes macros are defined that may not be supported at runtime. Thus, the ROUNDING_TESTS_* definitions for some configurations are just removed, not moved to new math-tests-rounding.h headers; the only architectures needing math-tests-rounding.h are those where the macros are defined in bits/fenv.h because of the possibility of a soft-float compilation using a hard-float glibc with the same ABI (i.e., ARM and RISC-V). The test-*-vlen*.h headers, by using #undef, do not yet follow typo-proof conventions (but they no longer implicitly rely on being included before math-tests.h, and this area can always be cleaned up further in future). Tested with build-many-glibcs.py. * sysdeps/generic/math-tests-rounding.h: New file. * sysdeps/generic/math-tests.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_float): Do not define here. (ROUNDING_TESTS_double): Likewise. (ROUNDING_TESTS_long_double): Likewise. (ROUNDING_TESTS_float128): Likewise. * math/test-double-vlen2.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_double): Undefine before defining. * math/test-double-vlen4.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_double): Undefine before defining. * math/test-double-vlen8.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_double): Undefine before defining. * math/test-float-vlen16.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_float): Undefine before defining. * math/test-float-vlen4.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_float): Undefine before defining. * math/test-float-vlen8.h: Include <math-tests-rounding.h>. (ROUNDING_TESTS_float): Undefine before defining. * sysdeps/arm/nofpu/math-tests-rounding.h: New file. * sysdeps/arm/math-tests.h [__SOFTFP__] (ROUNDING_TESTS_float): Do not define here. [__SOFTFP__] (ROUNDING_TESTS_double): Likewise. [__SOFTFP__] (ROUNDING_TESTS_long_double): Likewise. * sysdeps/riscv/nofpu/math-tests-rounding.h: New file. * sysdeps/riscv/math-tests.h [!__riscv_flen] (ROUNDING_TESTS_float): Do not define here. [!__riscv_flen] (ROUNDING_TESTS_double): Likewise. [!__risv_flen] (ROUNDING_TESTS_long_double): Likewise. * sysdeps/m68k/coldfire/math-tests.h [!__mcffpu__] (ROUNDING_TESTS_float): Likewise. [!__mcffpu__] (ROUNDING_TESTS_double): Likewise. [!__mcffpu__] (ROUNDING_TESTS_long_double): Likewise. * sysdeps/mips/math-tests.h [__mips_soft_float] (ROUNDING_TESTS_float): Likewise. [__mips_soft_float] (ROUNDING_TESTS_double): Likewise. [__mips_soft_float] (ROUNDING_TESTS_long_double): Likewise. * sysdeps/nios2/math-tests.h (ROUNDING_TESTS_float): Likewise. (ROUNDING_TESTS_double): Likewise. (ROUNDING_TESTS_long_double): Likewise.	2018-08-22 12:25:50 +00:00
Joseph Myers	506d7fb1d4	Do not define various fenv.h macros for MIPS soft-float (bug 23479). ... MIPS soft-float glibc does not support floating-point exceptions and rounding modes, and uses a different ABI from hard-float so a soft-float compilation cannot use a glibc that does support floating-point exceptions and rounding modes. Thus, bits/fenv.h should not, when compiling for soft-float, define macros for the unsupported features. This patch changes it accordingly to define those macros only for hard-float. None of the exception macros are defined for soft-float, with FE_ALL_EXCEPT defined to 0 in that case, and only FE_TONEAREST is defined of the rounding-mode macros, and FE_NOMASK_ENV is not defined; this is consistent with how architectures lacking exception and rounding mode support generally define things in this header. As well as making the header more correct for this case, this also means the generic math_private.h optimizations for this case automatically apply (inlining libm-internal fenv.h function calls that are trivial when exceptions and rounding modes are not supported). The mips64 sfp-machine.h then needs similar changes to disable more of the exception and rounding mode handling for soft-float. (The mips32 sfp-machine.h is already used only for soft-float, has no integration with hardware exceptions or rounding modes and so needs no changes.) Existing binaries might use the old FE_NOMASK_ENV value as an argument to fesetenv / feupdateenv and expect an error for it (given that it was defined in a header that also defined FE_ALL_EXCEPT to a nonzero value). To preserve that error, wrappers for the fallback fesetenv and feupdateenv are created in sysdeps/mips/nofpu/. Tested for mips64 (hard-float and soft-float, all three ABIs). [BZ #23479] * sysdeps/mips/bits/fenv.h (FE_INEXACT): Define only if [__mips_hard_float]. (FE_UNDERFLOW): Likewise. (FE_OVERFLOW): Likewise. (FE_DIVBYZERO): Likewise. (FE_INVALID): Likewise. (FE_ALL_EXCEPT): Define to 0 if [!__mips_hard_float]. (FE_TOWARDZERO): Define only if [__mips_hard_float]. (FE_UPWARD): Likewise. (FE_DOWNWARD): Likewise. (__FE_UNDEFINED): Define if [!__mips_hard_float] (FE_NOMASK_ENV): Define only if [__mips_hard_float]. * sysdeps/mips/mips64/sfp-machine.h (_FP_DECL_EX): Define only if [__mips_hard_float]. (FP_ROUNDMODE): Likewise. (FP_RND_NEAREST): Likewise. (FP_RND_ZERO): Likewise. (FP_RND_PINF): Likewise. (FP_RND_MINF): Likewise. (FP_EX_INVALID): Likewise. (FP_EX_OVERFLOW): Likewise. (FP_EX_UNDERFLOW): Likewise. (FP_EX_DIVZERO): Likewise. (FP_EX_INEXACT): Likewise. (FP_INIT_ROUNDMODE): Likewise. * sysdeps/mips/nofpu/fesetenv.c: New file. * sysdeps/mips/nofpu/feupdateenv.c: Likewise.	2018-08-02 15:53:29 +00:00
Joseph Myers	46f8cf5712	Move SNAN_TESTS_PRESERVE_PAYLOAD out of math-tests.h. ... Continuing moving macros out of math-tests.h to smaller headers following typo-proof conventions instead of using #ifndef, this patch moves SNAN_TESTS_PRESERVE_PAYLOAD out to its own sysdeps header. Tested with build-many-glibcs.py. * sysdeps/generic/math-tests-snan-payload.h: New file. * sysdeps/hppa/math-tests-snan-payload.h: Likewise. * sysdeps/mips/math-tests-snan-payload.h: Likewise. * sysdeps/riscv/math-tests-snan-payload.h: Likewise. * sysdeps/generic/math-tests.h: Include <math-tests-snan-payload.h>. (SNAN_TESTS_PRESERVE_PAYLOAD): Do not define macro here. * sysdeps/hppa/math-tests.h: Remove file. * sysdeps/mips/math-tests.h [!__mips_nan2008] (SNAN_TESTS_PRESERVE_PAYLOAD): Do not define macro here. * sysdeps/riscv/math-tests.h (SNAN_TESTS_PRESERVE_PAYLOAD): Likewise.	2018-08-01 11:21:16 +00:00
H.J. Lu	67c0579669	Mark _init and _fini as hidden [BZ #23145] ... _init and _fini are special functions provided by glibc for linker to define DT_INIT and DT_FINI in executable and shared library. They should never be put in dynamic symbol table. This patch marks them as hidden to remove them from dynamic symbol table. Tested with build-many-glibcs.py. [BZ #23145] * elf/Makefile (tests-special): Add $(objpfx)check-initfini.out. ($(all-built-dso:=.dynsym): New target. (common-generated): Add $(all-built-dso:$(common-objpfx)%=%.dynsym). ($(objpfx)check-initfini.out): New target. (generated): Add check-initfini.out. * scripts/check-initfini.awk: New file. * sysdeps/aarch64/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/alpha/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/arm/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/hppa/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/i386/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/ia64/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/m68k/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/microblaze/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/mips/mips32/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/mips/mips64/n32/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/mips/mips64/n64/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/nios2/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/powerpc/powerpc32/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/powerpc/powerpc64/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/s390/s390-32/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/s390/s390-64/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/sh/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/sparc/crti.S (_init): Mark as hidden. (_fini): Likewise. * sysdeps/x86_64/crti.S (_init): Mark as hidden. (_fini): Likewise.	2018-06-08 10:28:52 -07:00
Joseph Myers	c9992d13c4	Update MIPS libm-test-ulps. ... * sysdeps/mips/mips32/libm-test-ulps: Update. * sysdeps/mips/mips64/libm-test-ulps: Likewise.	2018-05-16 15:35:26 +00:00
Samuel Thibault	81b032c833	Drop fpregset unused symbol exposition ... * sysdeps/arm/sys/ucontext.h: Remove fpregset struct name, unused and non-compliant. * sysdeps/i386/sys/ucontext.h: Likewise. * sysdeps/m68k/sys/ucontext.h: Likewise. * sysdeps/mips/sys/ucontext.h: Likewise. * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h: Likewise.	2018-04-20 01:27:13 +02:00
Maciej W. Rozycki	10a446ddcc	elf: Unify symbol address run-time calculation [BZ #19818] ... Wrap symbol address run-time calculation into a macro and use it throughout, replacing inline calculations. There are a couple of variants, most of them different in a functionally insignificant way. Most calculations are right following RESOLVE_MAP, at which point either the map or the symbol returned can be checked for validity as the macro sets either both or neither. In some places both the symbol and the map has to be checked however. My initial implementation therefore always checked both, however that resulted in code larger by as much as 0.3%, as many places know from elsewhere that no check is needed. I have decided the size growth was unacceptable. Having looked closer I realized that it's the map that is the culprit. Therefore I have modified LOOKUP_VALUE_ADDRESS to accept an additional boolean argument telling it to access the map without checking it for validity. This in turn has brought quite nice results, with new code actually being smaller for i686, and MIPS o32, n32 and little-endian n64 targets, unchanged in size for x86-64 and, unusually, marginally larger for big-endian MIPS n64, as follows: i686: text data bss dec hex filename 152255 4052 192 156499 26353 ld-2.27.9000-base.so 152159 4052 192 156403 262f3 ld-2.27.9000-elf-symbol-value.so MIPS/o32/el: text data bss dec hex filename 142906 4396 260 147562 2406a ld-2.27.9000-base.so 142890 4396 260 147546 2405a ld-2.27.9000-elf-symbol-value.so MIPS/n32/el: text data bss dec hex filename 142267 4404 260 146931 23df3 ld-2.27.9000-base.so 142171 4404 260 146835 23d93 ld-2.27.9000-elf-symbol-value.so MIPS/n64/el: text data bss dec hex filename 149835 7376 408 157619 267b3 ld-2.27.9000-base.so 149787 7376 408 157571 26783 ld-2.27.9000-elf-symbol-value.so MIPS/o32/eb: text data bss dec hex filename 142870 4396 260 147526 24046 ld-2.27.9000-base.so 142854 4396 260 147510 24036 ld-2.27.9000-elf-symbol-value.so MIPS/n32/eb: text data bss dec hex filename 142019 4404 260 146683 23cfb ld-2.27.9000-base.so 141923 4404 260 146587 23c9b ld-2.27.9000-elf-symbol-value.so MIPS/n64/eb: text data bss dec hex filename 149763 7376 408 157547 2676b ld-2.27.9000-base.so 149779 7376 408 157563 2677b ld-2.27.9000-elf-symbol-value.so x86-64: text data bss dec hex filename 148462 6452 400 155314 25eb2 ld-2.27.9000-base.so 148462 6452 400 155314 25eb2 ld-2.27.9000-elf-symbol-value.so [BZ #19818] * sysdeps/generic/ldsodefs.h (LOOKUP_VALUE_ADDRESS): Add `set' parameter. (SYMBOL_ADDRESS): New macro. [!ELF_FUNCTION_PTR_IS_SPECIAL] (DL_SYMBOL_ADDRESS): Use SYMBOL_ADDRESS for symbol address calculation. * elf/dl-runtime.c (_dl_fixup): Likewise. (_dl_profile_fixup): Likewise. * elf/dl-symaddr.c (_dl_symbol_address): Likewise. * elf/rtld.c (dl_main): Likewise. * sysdeps/aarch64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/alpha/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/arm/dl-machine.h (elf_machine_rel): Likewise. (elf_machine_rela): Likewise. * sysdeps/hppa/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/hppa/dl-symaddr.c (_dl_symbol_address): Likewise. * sysdeps/i386/dl-machine.h (elf_machine_rel): Likewise. (elf_machine_rela): Likewise. * sysdeps/ia64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/m68k/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/microblaze/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/mips/dl-machine.h (ELF_MACHINE_BEFORE_RTLD_RELOC): Likewise. (elf_machine_reloc): Likewise. (elf_machine_got_rel): Likewise. * sysdeps/mips/dl-trampoline.c (__dl_runtime_resolve): Likewise. * sysdeps/nios2/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/riscv/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/s390/s390-32/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/s390/s390-64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sh/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc32/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/sparc/sparc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/tile/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/x86_64/dl-machine.h (elf_machine_rela): Likewise. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	2018-04-04 23:09:37 +01:00
Joseph Myers	ffec7b2740	Use x86_64 backtrace as generic version. ... No glibc configuration uses the present debug/backtrace.c, whereas several #include the x86_64 version. The x86_64 version is effectively a generic one (using _Unwind_Backtrace from libgcc, which works much more reliably than the built-in functions used by debug/backtrace.c). This patch moves it to debug/backtrace.c and removes all the #includes of the x86_64 version from other architectures which are no longer required. I do not know whether all the other architecture-specific backtrace implementations that are based on _Unwind_Backtrace are required, or whether, where their differences from the generic version do something useful, suitable hooks could be added to the generic version to reduce the duplication involved. Tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * sysdeps/x86_64/backtrace.c: Move to .... * debug/backtrace.c: ... here. * sysdeps/aarch64/backtrace.c: Remove file. * sysdeps/alpha/backtrace.c: Likewise. * sysdeps/hppa/backtrace.c: Likewise. * sysdeps/ia64/backtrace.c: Likewise. * sysdeps/mips/backtrace.c: Likewise. * sysdeps/nios2/backtrace.c: Likewise. * sysdeps/riscv/backtrace.c: Likewise. * sysdeps/sh/backtrace.c: Likewise. * sysdeps/tile/backtrace.c: Likewise.	2018-03-21 17:25:30 +00:00
Samuel Thibault	a5df0318ef	hurd: add gscope support ... * elf/dl-support.c [!THREAD_GSCOPE_IN_TCB] (_dl_thread_gscope_count): Define variable. * sysdeps/generic/ldsodefs.h [!THREAD_GSCOPE_IN_TCB] (struct rtld_global): Add _dl_thread_gscope_count member. * sysdeps/mach/hurd/tls.h: Include <atomic.h>. [!defined __ASSEMBLER__] (THREAD_GSCOPE_GLOBAL, THREAD_GSCOPE_SET_FLAG, THREAD_GSCOPE_RESET_FLAG, THREAD_GSCOPE_WAIT): Define macros. * sysdeps/generic/tls.h: Document THREAD_GSCOPE_IN_TCB. * sysdeps/aarch64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/alpha/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/arm/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/hppa/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/i386/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/ia64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/m68k/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/microblaze/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/mips/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/nios2/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/powerpc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/riscv/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/s390/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sh/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/sparc/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/tile/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1. * sysdeps/x86_64/nptl/tls.h: Define THREAD_GSCOPE_IN_TCB to 1.	2018-03-11 13:06:33 +01:00
Joseph Myers	6f9a3dd8b8	Move LDBL_CLASSIFY_COMPAT to its own header. ... The general rule in glibc is that it's better for a macro to be always defined, and tested with #if, than for it to be tested with #ifdef, because the latter is prone to typos in the macro name as well as to the header with the macro accidentally not being included in a file testing it. (Testing with an "if" statement is even better, in those cases where it's possible to do things that way, as it then means both cases in the code get checked for syntax in glibc builds with either value of the condition.) math_private.h has several different groups of macros, meaning that architectures wanting to override some of them need to define those then include the generic version, which then defines macros if not already defined. It's hard to avoid that arrangement completely, but various cases can be improved by splitting out macros or groups of macros into separate files. This patch splits out the LDBL_CLASSIFY_COMPAT macro into a separate ldbl-classify-compat.h header. This macro is tested with #ifdef; this patch changes it to testing with #if, with a default definition to 0 in the generic header and then architecture-specific headers defining it to 1. Tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by the patch. * sysdeps/generic/ldbl-classify-compat.h: New file. * sysdeps/arm/ldbl-classify-compat.h: Likewise. * sysdeps/m68k/coldfire/ldbl-classify-compat.h: Likewise. * sysdeps/microblaze/ldbl-classify-compat.h: Likewise. * sysdeps/mips/ldbl-classify-compat.h: Likewise. * sysdeps/nios2/ldbl-classify-compat.h: Likewise. * sysdeps/sh/ldbl-classify-compat.h: Likewise. * sysdeps/ieee754/dbl-64/s_finite.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/ieee754/dbl-64/s_isinf.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/ieee754/dbl-64/s_isnan.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/ieee754/dbl-64/wordsize-64/s_finite.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/ieee754/dbl-64/wordsize-64/s_isinf.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/ieee754/dbl-64/wordsize-64/s_isnan.c: Include <ldbl-classify-compat.h>. [LDBL_CLASSIFY_COMPAT]: Test value, not whether defined. * sysdeps/arm/math_private.h (LDBL_CLASSIFY_COMPAT): Remove macro. * sysdeps/mips/math_private.h (LDBL_CLASSIFY_COMPAT): Likewise. * sysdeps/m68k/coldfire/math_private.h: Remove file. * sysdeps/microblaze/math_private.h: Likewise. * sysdeps/nios2/math_private.h: Likewise. * sysdeps/sh/math_private.h: Likewise.	2018-02-01 21:01:00 +00:00
Joseph Myers	7eff095459	Update MIPS libm-test-ulps. ... * sysdeps/mips/mips32/libm-test-ulps: Update. * sysdeps/mips/mips64/libm-test-ulps: Likewise.	2018-01-02 21:55:15 +00:00
Joseph Myers	688903eb3e	Update copyright dates with scripts/update-copyrights. ... * All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.	2018-01-01 00:32:25 +00:00
Sergei Trofimovich	c85c564d14	mips32: fix clobbering s0 in setjmp() [BZ #22624] ... Similar to commit 1ab47db00dfbc0128119e3503d3ed640ffc4830b ("mips64: fix clobbering s0 in setjmp() [BZ #22624]") as sysdeps/mips/setjmp_aux.c is almost an identical copy of sysdeps/mips/mips64/setjmp_aux.c. [BZ #22624] * sysdeps/mips/setjmp_aux.c (__sigsetjmp_aux): Use inhibit_stack_protector.	2017-12-18 18:26:49 +00:00
Sergei Trofimovich	368b6c8da9	mips64: fix clobbering s0 in setjmp() [BZ #22624] ... When configured as --enable-stack-protector=all glibc inserts stack checking canary into every function including __sigsetjmp_aux(). Stack checking code ends up using s0 register to temporary hold address of global canary value. Unfortunately __sigsetjmp_aux assumes no caller' caller-save registers should be clobbered as it stores them as-is. The fix is to disable stack protection of __sigsetjmp_aux. Tested on the following test: #include <setjmp.h> #include <stdio.h> int main() { jmp_buf jb; volatile register long s0 asm ("$s0"); s0 = 1234; if (setjmp(jb) == 0) longjmp(jb, 1); printf ("$s0 = %lu\n", s0); } Without the fix: $ qemu-mipsn32 -L . ./mips-longjmp-bug $s0 = 1082346228 With the fix: $ qemu-mipsn32 -L . ./mips-longjmp-bug $s0 = 1234 [BZ #22624] * sysdeps/mips/mips64/setjmp_aux.c (__sigsetjmp_aux): Use inhibit_stack_protector.	2017-12-18 17:23:02 +00:00
H.J. Lu	9d7a3741c9	Add --enable-static-pie configure option to build static PIE [BZ #19574] ... Static PIE extends address space layout randomization to static executables. It provides additional security hardening benefits at the cost of some memory and performance. Dynamic linker, ld.so, is a standalone program which can be loaded at any address. This patch adds a configure option, --enable-static-pie, to embed the part of ld.so in static executable to create static position independent executable (static PIE). A static PIE is similar to static executable, but can be loaded at any address without help from a dynamic linker. When --enable-static-pie is used to configure glibc, libc.a is built as PIE and all static executables, including tests, are built as static PIE. The resulting libc.a can be used together with GCC 8 or above to build static PIE with the compiler option, -static-pie. But GCC 8 isn't required to build glibc with --enable-static-pie. Only GCC with PIE support is needed. When an older GCC is used to build glibc with --enable-static-pie, proper input files are passed to linker to create static executables as static PIE, together with "-z text" to prevent dynamic relocations in read-only segments, which are not allowed in static PIE. The following changes are made for static PIE: 1. Add a new function, _dl_relocate_static_pie, to: a. Get the run-time load address. b. Read the dynamic section. c. Perform dynamic relocations. Dynamic linker also performs these steps. But static PIE doesn't load any shared objects. 2. Call _dl_relocate_static_pie at entrance of LIBC_START_MAIN in libc.a. crt1.o, which is used to create dynamic and non-PIE static executables, is updated to include a dummy _dl_relocate_static_pie. rcrt1.o is added to create static PIE, which will link in the real _dl_relocate_static_pie. grcrt1.o is also added to create static PIE with -pg. GCC 8 has been updated to support rcrt1.o and grcrt1.o for static PIE. Static PIE can work on all architectures which support PIE, provided: 1. Target must support accessing of local functions without dynamic relocations, which is needed in start.S to call __libc_start_main with function addresses of __libc_csu_init, __libc_csu_fini and main. All functions in static PIE are local functions. If PIE start.S can't reach main () defined in a shared object, the code sequence: pass address of local_main to __libc_start_main ... local_main: tail call to main via PLT can be used. 2. start.S is updated to check PIC instead SHARED for PIC code path and avoid dynamic relocation, when PIC is defined and SHARED isn't defined, to support static PIE. 3. All assembly codes are updated check PIC instead SHARED for PIC code path to avoid dynamic relocations in read-only sections. 4. All assembly codes are updated check SHARED instead PIC for static symbol name. 5. elf_machine_load_address in dl-machine.h are updated to support static PIE. 6. __brk works without TLS nor dynamic relocations in read-only section so that it can be used by __libc_setup_tls to initializes TLS in static PIE. NB: When glibc is built with GCC defaulted to PIE, libc.a is compiled with -fPIE, regardless if --enable-static-pie is used to configure glibc. When glibc is configured with --enable-static-pie, libc.a is compiled with -fPIE, regardless whether GCC defaults to PIE or not. The same libc.a can be used to build both static executable and static PIE. There is no need for separate PIE copy of libc.a. On x86-64, the normal static sln: text data bss dec hex filename 625425 8284 5456 639165 9c0bd elf/sln the static PIE sln: text data bss dec hex filename 657626 20636 5392 683654 a6e86 elf/sln The code size is increased by 5% and the binary size is increased by 7%. Linker requirements to build glibc with --enable-static-pie: 1. Linker supports --no-dynamic-linker to remove PT_INTERP segment from static PIE. 2. Linker can create working static PIE. The x86-64 linker needs the fix for https://sourceware.org/bugzilla/show_bug.cgi?id=21782 The i386 linker needs to be able to convert "movl main@GOT(%ebx), %eax" to "leal main@GOTOFF(%ebx), %eax" if main is defined locally. Binutils 2.29 or above are OK for i686 and x86-64. But linker status for other targets need to be verified. 3. Linker should resolve undefined weak symbols to 0 in static PIE: https://sourceware.org/bugzilla/show_bug.cgi?id=22269 4. Many ELF backend linkers incorrectly check bfd_link_pic for TLS relocations, which should check bfd_link_executable instead: https://sourceware.org/bugzilla/show_bug.cgi?id=22263 Tested on aarch64, i686 and x86-64. Using GCC 7 and binutils master branch, build-many-glibcs.py with --enable-static-pie with all patches for static PIE applied have the following build successes: PASS: glibcs-aarch64_be-linux-gnu build PASS: glibcs-aarch64-linux-gnu build PASS: glibcs-armeb-linux-gnueabi-be8 build PASS: glibcs-armeb-linux-gnueabi build PASS: glibcs-armeb-linux-gnueabihf-be8 build PASS: glibcs-armeb-linux-gnueabihf build PASS: glibcs-arm-linux-gnueabi build PASS: glibcs-arm-linux-gnueabihf build PASS: glibcs-arm-linux-gnueabihf-v7a build PASS: glibcs-arm-linux-gnueabihf-v7a-disable-multi-arch build PASS: glibcs-m68k-linux-gnu build PASS: glibcs-microblazeel-linux-gnu build PASS: glibcs-microblaze-linux-gnu build PASS: glibcs-mips64el-linux-gnu-n32 build PASS: glibcs-mips64el-linux-gnu-n32-nan2008 build PASS: glibcs-mips64el-linux-gnu-n32-nan2008-soft build PASS: glibcs-mips64el-linux-gnu-n32-soft build PASS: glibcs-mips64el-linux-gnu-n64 build PASS: glibcs-mips64el-linux-gnu-n64-nan2008 build PASS: glibcs-mips64el-linux-gnu-n64-nan2008-soft build PASS: glibcs-mips64el-linux-gnu-n64-soft build PASS: glibcs-mips64-linux-gnu-n32 build PASS: glibcs-mips64-linux-gnu-n32-nan2008 build PASS: glibcs-mips64-linux-gnu-n32-nan2008-soft build PASS: glibcs-mips64-linux-gnu-n32-soft build PASS: glibcs-mips64-linux-gnu-n64 build PASS: glibcs-mips64-linux-gnu-n64-nan2008 build PASS: glibcs-mips64-linux-gnu-n64-nan2008-soft build PASS: glibcs-mips64-linux-gnu-n64-soft build PASS: glibcs-mipsel-linux-gnu build PASS: glibcs-mipsel-linux-gnu-nan2008 build PASS: glibcs-mipsel-linux-gnu-nan2008-soft build PASS: glibcs-mipsel-linux-gnu-soft build PASS: glibcs-mips-linux-gnu build PASS: glibcs-mips-linux-gnu-nan2008 build PASS: glibcs-mips-linux-gnu-nan2008-soft build PASS: glibcs-mips-linux-gnu-soft build PASS: glibcs-nios2-linux-gnu build PASS: glibcs-powerpc64le-linux-gnu build PASS: glibcs-powerpc64-linux-gnu build PASS: glibcs-tilegxbe-linux-gnu-32 build PASS: glibcs-tilegxbe-linux-gnu build PASS: glibcs-tilegx-linux-gnu-32 build PASS: glibcs-tilegx-linux-gnu build PASS: glibcs-tilepro-linux-gnu build and the following build failures: FAIL: glibcs-alpha-linux-gnu build elf/sln is failed to link due to: assertion fail bfd/elf64-alpha.c:4125 This is caused by linker bug and/or non-PIC code in PIE libc.a. FAIL: glibcs-hppa-linux-gnu build elf/sln is failed to link due to: collect2: fatal error: ld terminated with signal 11 [Segmentation fault] https://sourceware.org/bugzilla/show_bug.cgi?id=22537 FAIL: glibcs-ia64-linux-gnu build elf/sln is failed to link due to: collect2: fatal error: ld terminated with signal 11 [Segmentation fault] FAIL: glibcs-powerpc-linux-gnu build FAIL: glibcs-powerpc-linux-gnu-soft build FAIL: glibcs-powerpc-linux-gnuspe build FAIL: glibcs-powerpc-linux-gnuspe-e500v1 build elf/sln is failed to link due to: ld: read-only segment has dynamic relocations. This is caused by linker bug and/or non-PIC code in PIE libc.a. See: https://sourceware.org/bugzilla/show_bug.cgi?id=22264 FAIL: glibcs-powerpc-linux-gnu-power4 build elf/sln is failed to link due to: findlocale.c:96:(.text+0x22c): @local call to ifunc memchr This is caused by linker bug and/or non-PIC code in PIE libc.a. FAIL: glibcs-s390-linux-gnu build elf/sln is failed to link due to: collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core dumped assertion fail bfd/elflink.c:14299 This is caused by linker bug and/or non-PIC code in PIE libc.a. FAIL: glibcs-sh3eb-linux-gnu build FAIL: glibcs-sh3-linux-gnu build FAIL: glibcs-sh4eb-linux-gnu build FAIL: glibcs-sh4eb-linux-gnu-soft build FAIL: glibcs-sh4-linux-gnu build FAIL: glibcs-sh4-linux-gnu-soft build elf/sln is failed to link due to: ld: read-only segment has dynamic relocations. This is caused by linker bug and/or non-PIC code in PIE libc.a. See: https://sourceware.org/bugzilla/show_bug.cgi?id=22263 Also TLS code sequence in SH assembly syscalls in glibc doesn't match TLS code sequence expected by ld: https://sourceware.org/bugzilla/show_bug.cgi?id=22270 FAIL: glibcs-sparc64-linux-gnu build FAIL: glibcs-sparcv9-linux-gnu build FAIL: glibcs-tilegxbe-linux-gnu build FAIL: glibcs-tilegxbe-linux-gnu-32 build FAIL: glibcs-tilegx-linux-gnu build FAIL: glibcs-tilegx-linux-gnu-32 build FAIL: glibcs-tilepro-linux-gnu build elf/sln is failed to link due to: ld: read-only segment has dynamic relocations. This is caused by linker bug and/or non-PIC code in PIE libc.a. See: https://sourceware.org/bugzilla/show_bug.cgi?id=22263 [BZ #19574] * INSTALL: Regenerated. * Makeconfig (real-static-start-installed-name): New. (pic-default): Updated for --enable-static-pie. (pie-default): New for --enable-static-pie. (default-pie-ldflag): Likewise. (+link-static-before-libc): Replace $(DEFAULT-LDFLAGS-$(@F)) with $(if $($(@F)-no-pie),$(no-pie-ldflag),$(default-pie-ldflag)). Replace $(static-start-installed-name) with $(real-static-start-installed-name). (+prectorT): Updated for --enable-static-pie. (+postctorT): Likewise. (CFLAGS-.o): Add $(pie-default). (CFLAGS-.op): Likewise. * NEWS: Mention --enable-static-pie. * config.h.in (ENABLE_STATIC_PIE): New. * configure.ac (--enable-static-pie): New configure option. (have-no-dynamic-linker): New LIBC_CONFIG_VAR. (have-static-pie): Likewise. Enable static PIE if linker supports --no-dynamic-linker. (ENABLE_STATIC_PIE): New AC_DEFINE. (enable-static-pie): New LIBC_CONFIG_VAR. * configure: Regenerated. * csu/Makefile (omit-deps): Add r$(start-installed-name) and gr$(start-installed-name) for --enable-static-pie. (extra-objs): Likewise. (install-lib): Likewise. (extra-objs): Add static-reloc.o and static-reloc.os ($(objpfx)$(start-installed-name)): Also depend on $(objpfx)static-reloc.o. ($(objpfx)r$(start-installed-name)): New. ($(objpfx)g$(start-installed-name)): Also depend on $(objpfx)static-reloc.os. ($(objpfx)gr$(start-installed-name)): New. * csu/libc-start.c (LIBC_START_MAIN): Call _dl_relocate_static_pie in libc.a. * csu/libc-tls.c (__libc_setup_tls): Add main_map->l_addr to initimage. * csu/static-reloc.c: New file. * elf/Makefile (routines): Add dl-reloc-static-pie. (elide-routines.os): Likewise. (DEFAULT-LDFLAGS-tst-tls1-static-non-pie): Removed. (tst-tls1-static-non-pie-no-pie): New. * elf/dl-reloc-static-pie.c: New file. * elf/dl-support.c (_dl_get_dl_main_map): New function. * elf/dynamic-link.h (ELF_DURING_STARTUP): Also check STATIC_PIE_BOOTSTRAP. * elf/get-dynamic-info.h (elf_get_dynamic_info): Likewise. * gmon/Makefile (tests): Add tst-gmon-static-pie. (tests-static): Likewise. (DEFAULT-LDFLAGS-tst-gmon-static): Removed. (tst-gmon-static-no-pie): New. (CFLAGS-tst-gmon-static-pie.c): Likewise. (CRT-tst-gmon-static-pie): Likewise. (tst-gmon-static-pie-ENV): Likewise. (tests-special): Likewise. ($(objpfx)tst-gmon-static-pie.out): Likewise. (clean-tst-gmon-static-pie-data): Likewise. ($(objpfx)tst-gmon-static-pie-gprof.out): Likewise. * gmon/tst-gmon-static-pie.c: New file. * manual/install.texi: Document --enable-static-pie. * sysdeps/generic/ldsodefs.h (_dl_relocate_static_pie): New. (_dl_get_dl_main_map): Likewise. * sysdeps/i386/configure.ac: Check if linker supports static PIE. * sysdeps/x86_64/configure.ac: Likewise. * sysdeps/i386/configure: Regenerated. * sysdeps/x86_64/configure: Likewise. * sysdeps/mips/Makefile (ASFLAGS-.o): Add $(pie-default). (ASFLAGS-.op): Likewise.	2017-12-15 17:12:14 -08:00
Joseph Myers	6f7c009282	Add sysdeps/ieee754/soft-fp. ... The default sysdeps/ieee754 fma implementations rely on exceptions and rounding modes to achieve correct results through internal use of round-to-odd. Thus, glibc configurations without support for exceptions and rounding modes instead need to use implementations of fma based on soft-fp. At present, this is achieved via having implementation files in soft-fp/ that are #included by sysdeps files for each glibc configuration that needs them. In general this means such a configuration has its own s_fma.c and s_fmaf.c. TS 18661-1 adds functions that do an operation (+ - * / sqrt fma) on arguments wider than the return type, with a single rounding of the infinite-precision result to that return type. These are also naturally implemented using round-to-odd on platforms with hardware support for rounding modes and exceptions but lacking hardware support for these narrowing operations themselves. (Platforms that have direct hardware support for such narrowing operations include at least ia64, and Power ISA 2.07 or later, which I think means POWER8 or later.) So adding the remaining TS 18661-1 functions would mean at least six narrowing function implementations (fadd fsub fmul fdiv ffma fsqrt), with aliases for other types and further implementations in some configurations, that need to be overridden for configurations lacking hardware exceptions and rounding modes. Requiring all such configurations (currently seven of them) to have their own source files for all those functions seems undesirable. Thus, this patch adds a directory sysdeps/ieee754/soft-fp to contain libm function implementations based on soft-fp. This directory is then used via Implies from all the configurations that need it, so no more files need adding to every such configuration when adding more functions with soft-fp implementations. A configuration can still selectively #include a particular file from this directory if desired; thus, the MIPS #include of the fmal implementation is retained, since that's appropriate even for hard float (because long double is always implementated in software for MIPS64, so the soft-fp implementation of fmal is better than the ldbl-128 one). This also provides additional motivation for my recent patch removing --with-fp / --without-fp: previously there was no need for correct use of --without-fp for no-FPU ARM or SH3, and now we have autodetection nofpu/ sysdeps directories can be used by this patch for those configurations without imposing any new requirements on how glibc is configured. (The mips64/*/fpu/s_fma.c files added by this patch are needed to keep the dbl-64 version of fma for double, rather than the ldbl-128 one, used in that case.) Tested with build-many-glibcs.py that installed stripped shared libraries are unchanged by this patch. * soft-fp/fmadf4.c: Move to .... * sysdeps/ieee754/soft-fp/s_fma.c: ... here. * soft-fp/fmasf4.c: Move to .... * sysdeps/ieee754/soft-fp/s_fmaf.c: ... here. * soft-fp/fmatf4.c: Move to .... * sysdeps/ieee754/soft-fp/s_fmal.c: ... here. * sysdeps/ieee754/soft-fp/Makefile: New file. * sysdeps/arm/preconfigure.ac: Define with_fp_cond. * sysdeps/arm/preconfigure: Regenerated. * sysdeps/arm/nofpu/Implies: New file. * sysdeps/arm/s_fma.c: Remove file. * sysdeps/arm/s_fmaf.c: Likewise. * sysdeps/m68k/coldfire/nofpu/Implies: New file. * sysdeps/m68k/coldfire/nofpu/s_fma.c: Remove file. * sysdeps/m68k/coldfire/nofpu/s_fmaf.c: Likewise. * sysdeps/microblaze/Implies: Add ieee754/soft-fp. * sysdeps/microblaze/s_fma.c: Remove file. * sysdeps/microblaze/s_fmaf.c: Likewise. * sysdeps/mips/mips32/nofpu/Implies: New file. * sysdeps/mips/mips64/n32/fpu/s_fma.c: Likewise. * sysdeps/mips/mips64/n32/nofpu/Implies: Likewise. * sysdeps/mips/mips64/n64/fpu/s_fma.c: Likewise. * sysdeps/mips/mips64/n64/nofpu/Implies: Likewise. * sysdeps/mips/ieee754/s_fma.c: Remove file. * sysdeps/mips/ieee754/s_fmaf.c: Likewise. * sysdeps/mips/ieee754/s_fmal.c: Update include for move of fmal implementation. * sysdeps/nios2/Implies: Add ieee754/soft-fp. * sysdeps/nios2/s_fma.c: Remove file. * sysdeps/nios2/s_fmaf.c: Likewise. * sysdeps/sh/nofpu/Implies: New file. * sysdeps/sh/s_fma.c: Remove file. * sysdeps/sh/s_fmaf.c: Likewise. * sysdeps/tile/Implies: Add ieee754/soft-fp. * sysdeps/tile/s_fma.c: Remove file. * sysdeps/tile/s_fmaf.c: Likewise.	2017-12-12 23:35:21 +00:00
Joseph Myers	8df5d34720	Remove --with-fp / --without-fp. ... There is a configure option --without-fp that specifies that nofpu sysdeps directories should be used instead of fpu directories. For most glibc configurations, this option is of no use: either there is no valid nofpu variant of that configuration, or there are no fpu or nofpu sysdeps directories for that processor and so the option does nothing. For a few configurations, if you are using a soft-float compiler this option is required, and failing to use it generally results in compilation errors from inline asm using unavailable floating-point instructions. We're moving away from --with-cpu to configuring glibc based on how the compiler generates code, and it is natural to do so for --without-fp as well; in most cases the soft-float and hard-float ABIs are incompatible so you have no hope of building a working glibc with an inappropriately configured compiler or libgcc. This patch eliminates --without-fp, replacing it entirely by automatic configuration based on the compiler. Configurations for which this is relevant (coldfire / mips / powerpc32 / sh) define a variable with_fp_cond in their preconfigure fragments (under the same conditions under which those fragments do anything); this is a preprocessor conditional which the toplevel configure script then uses in a test to determine which sysdeps directories to use. The config.make with-fp variable remains. It's used only by powerpc (sysdeps/powerpc/powerpc32/Makefile) to add -mhard-float to various flags variables. For powerpc, -mcpu= options can imply use of soft-float. That could be an issue if you want to build for e.g. 476fp, but are using --with-cpu=476 because there isn't a 476fp sysdeps directory. If in future we eliminate --with-cpu and replace it entirely by testing the compiler, it would be natural at that point to eliminate that code as well (as the user should then just use a compiler defaulting to 476fp and the 476 sysdeps directory would be used automatically). Tested for x86_64, and tested with build-many-glibcs.py that installed shared libraries are unchanged by this patch. * configure.ac (--with-fp): Remove configure option. (with_fp_cond): New variable. (libc_cv_with_fp): New configure test. Use this variable instead of with_fp. * configure: Regenerated. * config.make.in (with-fp): Use @libc_cv_with_fp@. * manual/install.texi (Configuring and compiling): Remove --without-fp. * INSTALL: Regenerated. * sysdeps/m68k/preconfigure (with_fp_cond): Define for ColdFire. * sysdeps/mips/preconfigure (with_fp_cond): Define. * sysdeps/powerpc/preconfigure (with_fp_cond): Define for 32-bit. * sysdeps/sh/preconfigure (with_fp_cond): Define. * scripts/build-many-glibcs.py (Context.add_all_configs): Do not use --without-fp to configure glibc.	2017-12-12 13:56:47 +00:00
H.J. Lu	ef5d8b4342	mips: Don't use MIN in dl-machine.h ... MIN is used, but param.h may not be included, so expand its single use inline. * sysdeps/mips/dl-machine.h (elf_machine_reloc): Expand MIN.	2017-11-30 16:34:09 -08:00
Joseph Myers	a23aa5b727	Add _Float64x function aliases. ... This patch continues filling out TS 18661-3 support by adding *f64x function aliases on platforms with _Float64x support. (It so happens the set of such platforms is exactly the same as the set of platforms with _Float128 support, although on x86_64, x86 and ia32 the _Float64x format is Intel extended rather than binary128.) The API provided corresponds exactly to that provided for _Float128, mostly coming from TS 18661-3. As these functions always alias those for another type (long double, _Float128 or both), __* function names are not provided, as in other cases of alias types. Given the preparation done in previous patches, this one just enables the feature via Makeconfig and bits/floatn.h, adds symbol versions, and updates documentation and ABI baselines. The symbol versions are present unconditionally as GLIBC_2.27 in the relevant Versions files, as it's OK for those to specify versions for functions that may not be present in some configurations; no additional complexity is needed unless in future some configuration gains support for this type that didn't have such support in 2.27. The Makeconfig additions for ia64 and x86 aren't strictly needed, as those configurations also get float64x-alias-fcts definitions from sysdeps/ieee754/float128/Makeconfig, but still seem appropriate given that _Float64x is not _Float128 for those configurations. A libm-test-ulps update for x86 is included. This is because bits/mathinline.h does not have _Float64x support added and for two functions the use of out-of-line functions results in increased ulps (ifloat64x shares ulps with ildouble / ifloat128 as appropriate). Given that we'd like generally to eliminate bits/mathinline.h optimizations, preferring to have such optimizations in GCC instead, it seems reasonable not to add such support there for new types. GCC support for _FloatN / _FloatNx built-in functions is limited, but has been improved in GCC 8, and at some point I hope the full set of libm built-in functions in GCC, and other optimizations with per-floating-type aspects, will be enabled for all _FloatN / _FloatNx types. Tested for x86_64 and x86, and with build-many-glibcs.py, with both GCC 6 and GCC 7. * sysdeps/ia64/Makeconfig (float64x-alias-fcts): New variable. * sysdeps/ieee754/float128/Makeconfig (float64x-alias-fcts): Likewise. * sysdeps/ieee754/ldbl-128/Makeconfig (float64x-alias-fcts): Likewise. * sysdeps/x86/Makeconfig: New file. * bits/floatn-common.h (__HAVE_FLOAT64X): Remove macro. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * bits/floatn.h (__HAVE_FLOAT64X): New macro. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * sysdeps/ia64/bits/floatn.h (__HAVE_FLOAT64X): Likewise. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * sysdeps/ieee754/ldbl-128/bits/floatn.h (__HAVE_FLOAT64X): Likewise. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * sysdeps/mips/ieee754/bits/floatn.h (__HAVE_FLOAT64X): Likewise. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * sysdeps/powerpc/bits/floatn.h (__HAVE_FLOAT64X): Likewise. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * sysdeps/x86/bits/floatn.h (__HAVE_FLOAT64X): Likewise. (__HAVE_FLOAT64X_LONG_DOUBLE): Likewise. * manual/math.texi (Mathematics): Document support for _Float64x. * math/Versions (GLIBC_2.27): Add _Float64x functions. * stdlib/Versions (GLIBC_2.27): Likewise. * wcsmbs/Versions (GLIBC_2.27): Likewise. * sysdeps/unix/sysv/linux/aarch64/libc.abilist: Update. * sysdeps/unix/sysv/linux/aarch64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/alpha/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/i386/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/ia64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libc-le.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/libm-le.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc32/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/64/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/x86_64/x32/libm.abilist: Likewise. * sysdeps/i386/fpu/libm-test-ulps: Likewise. * sysdeps/i386/i686/fpu/multiarch/libm-test-ulps: Likewise.	2017-11-27 14:16:47 +00:00
Joseph Myers	015c6dc288	Support bits/floatn.h inclusion from .S files. ... Further _FloatN / _FloatNx type alias support will involve making architecture-specific .S files use the common macros for libm function aliases. Making them use those macros will also serve to simplify existing code for aliases / symbol versions in various cases, similar to such simplifications for ldbl-opt code. The libm-alias-*.h files sometimes need to include <bits/floatn.h> to determine which aliases they should define. At present, this does not work for inclusion from .S files because <bits/floatn.h> can define typedefs for old compilers. This patch changes all the <bits/floatn.h> and <bits/floatn-common.h> headers to include __ASSEMBLER__ conditionals. Those conditionals disable everything related to C syntax in the __ASSEMBLER__ case, not just the problem typedefs, as that seemed cleanest. The __HAVE_* definitions remain in the __ASSEMBLER__ case, as those provide information that is required to define the correct set of aliases. Tested with build-many-glibcs.py for a representative set of configurations (x86_64-linux-gnu i686-linux-gnu ia64-linux-gnu powerpc64le-linux-gnu mips64-linux-gnu-n64 sparc64-linux-gnu) with GCC 6. Also tested with GCC 6 for i686-linux-gnu in conjunction with changes to use alias macros in .S files. * bits/floatn-common.h [!__ASSEMBLER]: Disable everything related to C syntax instead of availability and properties of types. * bits/floatn.h [!__ASSEMBLER]: Likewise. * sysdeps/ia64/bits/floatn.h [!__ASSEMBLER]: Likewise. * sysdeps/ieee754/ldbl-128/bits/floatn.h [!__ASSEMBLER]: Likewise. * sysdeps/mips/ieee754/bits/floatn.h [!__ASSEMBLER]: Likewise. * sysdeps/powerpc/bits/floatn.h [!__ASSEMBLER]: Likewise. * sysdeps/x86/bits/floatn.h [!__ASSEMBLER]: Likewise.	2017-11-17 22:01:43 +00:00
Adhemerval Zanella	06be6368da	nptl: Define __PTHREAD_MUTEX_{NUSERS_AFTER_KIND,USE_UNION} ... This patch adds two new internal defines to set the internal pthread_mutex_t layout required by the supported ABIS: 1. __PTHREAD_MUTEX_NUSERS_AFTER_KIND which control whether to define __nusers fields before or after __kind. The preferred value for is 0 for new ports and it sets __nusers before __kind. 2. __PTHREAD_MUTEX_USE_UNION which control whether internal __spins and __list members will be place inside an union for linuxthreads compatibility. The preferred value is 0 for ports and it sets to not use an union to define both fields. It fixes the wrong offsets value for __kind value on x86_64-linux-gnu-x32. Checked with a make check run-built-tests=no on all afected ABIs. [BZ #22298] * nptl/allocatestack.c (allocate_stack): Check if __PTHREAD_MUTEX_HAVE_PREV is non-zero, instead if __PTHREAD_MUTEX_HAVE_PREV is defined. * nptl/descr.h (pthread): Likewise. * nptl/nptl-init.c (__pthread_initialize_minimal_internal): Likewise. * nptl/pthread_create.c (START_THREAD_DEFN): Likewise. * sysdeps/nptl/fork.c (__libc_fork): Likewise. * sysdeps/nptl/pthread.h (PTHREAD_MUTEX_INITIALIZER): Likewise. * sysdeps/nptl/bits/thread-shared-types.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New defines. (__pthread_internal_list): Check __PTHREAD_MUTEX_USE_UNION instead of __WORDSIZE for internal layout. (__pthread_mutex_s): Check __PTHREAD_MUTEX_NUSERS_AFTER_KIND instead of __WORDSIZE for internal __nusers layout and __PTHREAD_MUTEX_USE_UNION instead of __WORDSIZE whether to use an union for __spins and __list fields. (__PTHREAD_MUTEX_HAVE_PREV): Define also for __PTHREAD_MUTEX_USE_UNION case. * sysdeps/aarch64/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): New defines. * sysdeps/alpha/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/arm/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/hppa/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/ia64/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/m68k/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/microblaze/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/mips/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/nios2/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/powerpc/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/s390/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/sh/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/sparc/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/tile/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. * sysdeps/x86/nptl/bits/pthreadtypes-arch.h (__PTHREAD_MUTEX_NUSERS_AFTER_KIND, __PTHREAD_MUTEX_USE_UNION): Likewise. Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	2017-11-07 09:48:41 -02:00
Adhemerval Zanella	dff91cd45e	nptl: Add tests for internal pthread_mutex_t offsets ... This patch adds a new build test to check for internal fields offsets for user visible internal field. Although currently the only field which is statically initialized to a non zero value is pthread_mutex_t.__data.__kind value, the tests also check the offset of __kind, __spins, __elision (if supported), and __list internal member. A internal header (pthread-offset.h) is added to each major ABI with the reference value. Checked on x86_64-linux-gnu and with a build check for all affected ABIs (aarch64-linux-gnu, alpha-linux-gnu, arm-linux-gnueabihf, hppa-linux-gnu, i686-linux-gnu, ia64-linux-gnu, m68k-linux-gnu, microblaze-linux-gnu, mips64-linux-gnu, mips64-n32-linux-gnu, mips-linux-gnu, powerpc64le-linux-gnu, powerpc-linux-gnu, s390-linux-gnu, s390x-linux-gnu, sh4-linux-gnu, sparc64-linux-gnu, sparcv9-linux-gnu, tilegx-linux-gnu, tilegx-linux-gnu-x32, tilepro-linux-gnu, x86_64-linux-gnu, and x86_64-linux-x32). * nptl/pthreadP.h (ASSERT_PTHREAD_STRING, ASSERT_PTHREAD_INTERNAL_OFFSET): New macro. * nptl/pthread_mutex_init.c (__pthread_mutex_init): Add build time checks for internal pthread_mutex_t offsets. * sysdeps/aarch64/nptl/pthread-offsets.h (__PTHREAD_MUTEX_NUSERS_OFFSET, __PTHREAD_MUTEX_KIND_OFFSET, __PTHREAD_MUTEX_SPINS_OFFSET, __PTHREAD_MUTEX_ELISION_OFFSET, __PTHREAD_MUTEX_LIST_OFFSET): New macro. * sysdeps/alpha/nptl/pthread-offsets.h: Likewise. * sysdeps/arm/nptl/pthread-offsets.h: Likewise. * sysdeps/hppa/nptl/pthread-offsets.h: Likewise. * sysdeps/i386/nptl/pthread-offsets.h: Likewise. * sysdeps/ia64/nptl/pthread-offsets.h: Likewise. * sysdeps/m68k/nptl/pthread-offsets.h: Likewise. * sysdeps/microblaze/nptl/pthread-offsets.h: Likewise. * sysdeps/mips/nptl/pthread-offsets.h: Likewise. * sysdeps/nios2/nptl/pthread-offsets.h: Likewise. * sysdeps/powerpc/nptl/pthread-offsets.h: Likewise. * sysdeps/s390/nptl/pthread-offsets.h: Likewise. * sysdeps/sh/nptl/pthread-offsets.h: Likewise. * sysdeps/sparc/nptl/pthread-offsets.h: Likewise. * sysdeps/tile/nptl/pthread-offsets.h: Likewise. * sysdeps/x86_64/nptl/pthread-offsets.h: Likewise. Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	2017-11-07 09:48:28 -02:00