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2024-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert
2023-01-06Update copyright dates with scripts/update-copyrightsJoseph Myers
2022-04-10linux: Constify rfv variable in dl_vdso_vsymAlan Modra
Compilers may decide to put the rfv variable in .data rather than on the stack. It's slightly better to put it in .data.rel.ro.local instead. Regardles of that, making it const may enable further optimisations. Found when examining relative relocations (GOT ones in particular) as part of enabling static-pie for PowerPC64.
2022-01-01Update copyright dates with scripts/update-copyrightsPaul Eggert
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 7061 files FOO. I then removed trailing white space from math/tgmath.h, support/tst-support-open-dev-null-range.c, and sysdeps/x86_64/multiarch/strlen-vec.S, to work around the following obscure pre-commit check failure diagnostics from Savannah. I don't know why I run into these diagnostics whereas others evidently do not. remote: *** 912-#endif remote: *** 913: remote: *** 914- remote: *** error: lines with trailing whitespace found ... remote: *** error: sysdeps/unix/sysv/linux/statx_cp.c: trailing lines
2021-01-02Update copyright dates with scripts/update-copyrightsPaul Eggert
I used these shell commands: ../glibc/scripts/update-copyrights $PWD/../gnulib/build-aux/update-copyright (cd ../glibc && git commit -am"[this commit message]") and then ignored the output, which consisted lines saying "FOO: warning: copyright statement not found" for each of 6694 files FOO. I then removed trailing white space from benchtests/bench-pthread-locks.c and iconvdata/tst-iconv-big5-hkscs-to-2ucs4.c, to work around this diagnostic from Savannah: remote: *** pre-commit check failed ... remote: *** error: lines with trailing whitespace found remote: error: hook declined to update refs/heads/master
2020-01-03elf: Move vDSO setup to rtld (BZ#24967)Adhemerval Zanella
This patch moves the vDSO setup from libc to loader code, just after the vDSO link_map setup. For static case the initialization is moved to _dl_non_dynamic_init instead. Instead of using the mangled pointer, the vDSO data is set as attribute_relro (on _rtld_global_ro for shared or _dl_vdso_* for static). It is read-only even with partial relro. It fixes BZ#24967 now that the vDSO pointer is setup earlier than malloc interposition is called. Also, vDSO calls should not be a problem for static dlopen as indicated by BZ#20802. The vDSO pointer would be zero-initialized and the syscall will be issued instead. Checked on x86_64-linux-gnu, i686-linux-gnu, aarch64-linux-gnu, arm-linux-gnueabihf, powerpc64le-linux-gnu, powerpc64-linux-gnu, powerpc-linux-gnu, s390x-linux-gnu, sparc64-linux-gnu, and sparcv9-linux-gnu. I also run some tests on mips. Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
2020-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
2019-09-17Refactor vDSO initialization codeAdhemerval Zanella
Linux vDSO initialization code the internal function pointers require a lot of duplicated boilerplate over different architectures. This patch aims to simplify not only the code but the required definition to enable a vDSO symbol. The changes are: 1. Consolidate all init-first.c on only one implementation and enable the symbol based on HAVE_*_VSYSCALL existence. 2. Set the HAVE_*_VSYSCALL to the architecture expected names string. 3. Add a new internal implementation, get_vdso_mangle_symbol, which returns a mangled function pointer. Currently the clock_gettime, clock_getres, gettimeofday, getcpu, and time are handled in an arch-independent way, powerpc still uses some arch-specific vDSO symbol handled in a specific init-first implementation. Checked on aarch64-linux-gnu, arm-linux-gnueabihf, i386-linux-gnu, mips64-linux-gnu, powerpc64le-linux-gnu, s390x-linux-gnu, sparc64-linux-gnu, and x86_64-linux-gnu. * sysdeps/powerpc/powerpc32/backtrace.c (is_sigtramp_address, is_sigtramp_address_rt): Use HAVE_SIGTRAMP_{RT}32 instead of SHARED. * sysdeps/powerpc/powerpc64/backtrace.c (is_sigtramp_address): Likewise. * sysdeps/unix/sysv/linux/aarch64/init-first.c: Remove file. * sysdeps/unix/sysv/linux/aarch64/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/arm/init-first.c: Likewise. * sysdeps/unix/sysv/linux/arm/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/mips/init-first.c: Likewise. * sysdeps/unix/sysv/linux/mips/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/i386/init-first.c: Likewise. * sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise. * sysdeps/unix/sysv/linux/riscv/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/s390/init-first.c: Likewise. * sysdeps/unix/sysv/linux/s390/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/sparc/init-first.c: Likewise. * sysdeps/unix/sysv/linux/sparc/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/x86/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/init-first.c: Likewise. * sysdeps/unix/sysv/linux/aarch64/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Define value based on kernel exported name. * sysdeps/unix/sysv/linux/arm/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETCPU_VSYSCALL, HAVE_TIME_VSYSCALL, HAVE_GET_TBFREQ, HAVE_SIGTRAMP_RT64, HAVE_SIGTRAMP_32, HAVE_SIGTRAMP_RT32i, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL, HAVE_GETCPU_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL, HAVE_GETCPU_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL, HAVE_GETCPU_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME, VDSO_HASH): Define to invalid names if architecture does not define them. (get_vdso_mangle_symbol): New symbol. * sysdeps/unix/sysv/linux/init-first.c: New file. * sysdeps/unix/sysv/linux/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/init-first.c (gettimeofday, clock_gettime, clock_getres, getcpu, time): Remove declaration. (__libc_vdso_platform_setup_arch): Likewise and use get_vdso_mangle_symbol to setup vDSO symbols. (sigtramp_rt64, sigtramp32, sigtramp_rt32, get_tbfreq): Add attribute_hidden. * sysdeps/unix/sysv/linux/powerpc/libc-vdso.h: Likewise. * sysdeps/unix/sysv/linux/sysdep-vdso.h (VDSO_SYMBOL): Remove definition.
2019-09-17Remove PREPARE_VERSION and PREPARE_VERSION_KNOWAdhemerval Zanella
This patch removes the PREPARE_VERSION and PREPARE_VERSION_KNOW macro and uses a static inline function instead, get_vdso_symbol. Each architecture that supports vDSO must define the Linux version and its hash for symbol resolution (VDSO_NAME and VDSO_HASH macro respectively). It also organizes the HAVE_*_VSYSCALL for mips, powerpc, and s390 to define them on a common header. The idea is to require less code to configure and enable vDSO support for newer ports. No semantic changes are expected. Checked with a build against all affected architectures. * sysdeps/unix/make-syscalls.sh: Make vDSO call use get_vdso_symbol. * sysdeps/unix/sysv/linux/aarch64/gettimeofday.c (__gettimeofday): Use get_vdso_symbol instead of _dl_vdso_vsym. * sysdeps/unix/sysv/linux/powerpc/time.c (time): Likewise. * sysdeps/unix/sysv/linux/riscv/flush-icache.c (__lookup_riscv_flush_icache): Likewise. * sysdeps/unix/sysv/linux/x86/gettimeofday.c (__gettimeofday): Likewise. * sysdeps/unix/sysv/linux/x86/time.c (time): Likewise. * sysdeps/unix/sysv/linux/powerpc/gettimeofday.c: Likewise. * sysdeps/unix/sysv/linux/aarch64/init-first.c: Likewise. * sysdeps/unix/sysv/linux/arm/init-first.c: Likewise. * sysdeps/unix/sysv/linux/i386/init-first.c: Likewise. * sysdeps/unix/sysv/linux/mips/init-first.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/init-first.c: Likewise. * sysdeps/unix/sysv/linux/riscv/init-first.c: Likewise. * sysdeps/unix/sysv/linux/sparc/init-first.c: Likewise. * sysdeps/unix/sysv/linux/s390/init-first.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/init-first.c: Likewise. * sysdeps/unix/sysv/linux/aarch64/sysdep.h (VDSO_NAME, VDSO_HASH): Define. * sysdeps/unix/sysv/linux/arm/sysdep.h (VDSO_NAME, VDSO_HASH): Likewise. * sysdeps/unix/sysv/linux/i386/sysdep.h (VDSO_NAME, VDSO_HASH): Likewise. * sysdeps/unix/sysv/linux/riscv/sysdep.h (VDSO_NAME, VDSO_HASH): Likewise. * sysdeps/unix/sysv/linux/sparc/sysdep.h (VDSO_NAME, VDSO_HASH): Likewise. * sysdeps/unix/sysv/linux/x86_64/sysdep.h (VDSO_NAME, VDSO_HASH): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Remove definition. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h (HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-32/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL, HAVE_GETCPU_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/s390/s390-64/sysdep.h (HAVE_CLOCK_GETRES_VSYSCALL, HAVE_CLOCK_GETTIME_VSYSCALL, HAVE_GETTIMEOFDAY_VSYSCALL, HAVE_GETCPU_VSYSCALL): Likewise. * sysdeps/unix/sysv/linux/mips/sysdep.h: New file. * sysdeps/unix/sysv/linux/powerpc/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/s390/sysdep.h: Likewise. * sysdeps/unix/sysv/linux/dl-vdso.h (PREPARE_VERSION, PREPARE_VERSION_KNOWN, VDSO_NAME_LINUX_2_6, VDSO_HASH_LINUX_2_6, VDSO_NAME_LINUX_2_6_15, VDSO_HASH_LINUX_2_6_15, VDSO_NAME_LINUX_2_6_29, VDSO_HASH_LINUX_2_6_29, VDSO_NAME_LINUX_4_15, VDSO_HASH_LINUX_4_15): Remove defines. (get_vdso_symbol): New function.
2019-09-07Prefer https to http for gnu.org and fsf.org URLsPaul Eggert
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
2019-07-08dl-vdso: Add LINUX_4 HASH CODE to support nds32 vdso mechanismVincent Chen
* sysdeps/unix/sysv/linux/dl-vdso.h: Add LINUX_4 HASH code to support nds32 vdso mechanism. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-06-28Replace PREPARE_VERSION macro with inline functionTobias Klauser
* sysdeps/unix/sysv/linux/dl-vdso.h (PREPARE_VERSION): Remove macro. (prepare_version_base): New helper inline function. (prepare_version): New macro replacing PREPARE_VERSION. (PREPARE_VERSION_KNOWN): Use prepare_version instead of PREPARE_VERSION. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-06-21Add missing VDSO_{NAME,HASH}_* macros and use them for PREPARE_VERSION_KNOWNTobias Klauser
Define all currently used Linux versions used for PREPARE_VERSION{,_KNOWN} in sysdeps/unix/sysv/linux/dl-vdso.h and use them instead of duplicating the versions and precomputed hashes across architecture specific files. * sysdeps/unix/sysv/linux/aarch64/gettimeofday.c (INIT_ARCH): Use PREPARE_VERSION_KNOWN. * sysdeps/unix/sysv/linux/aarch64/init-first.c: Likewise. * sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME_LINUX_2_6_39): New define. (VDSO_HASH_LINUX_2_6_39): Likewise. (VDSO_NAME_LINUX_4_9): Likewise. (VDSO_HASH_LINUX_4_9): Likewise. * sysdeps/unix/sysv/linux/powerpc/gettimeofday.c (INIT_ARCH): Likewise. * sysdeps/unix/sysv/linux/powerpc/init-first.c (_libc_vdso_platform_setup): Likewise. * sysdeps/unix/sysv/linux/powerpc/time.c (INIT_ARCH): Likewise. * sysdeps/unix/sysv/linux/s390/init-first.c (_libc_vdso_platform_setup): Likewise. * sysdeps/unix/sysv/linux/x86_64/init-first.c (__vdso_platform_setup): Likewise. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2019-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
* 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.
2018-01-06Add linux-4.15 VDSO hash for RISC-VPalmer Dabbelt
The RISC-V Linux port defines VDSO symbols 2018-01-06 Palmer Dabbelt <palmer@sifive.com> * sysdeps/unix/sysv/linux/dl-vdso.h (VDSO_NAME_LINUX_4_15): New define. (VDSO_HASH_LINUX_4_15): Likewise.
2018-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
* 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.
2017-08-31elf: Remove internal_function attributeFlorian Weimer
2017-01-01Update copyright dates with scripts/update-copyrights.Joseph Myers
2016-01-04Update copyright dates with scripts/update-copyrights.Joseph Myers
2015-01-02Update copyright dates with scripts/update-copyrights.Joseph Myers
2014-01-01Update copyright notices with scripts/update-copyrightsAllan McRae
2013-01-02Update copyright notices with scripts/update-copyrights.Joseph Myers
2012-05-24syscalls.list support for vDSO IFUNCs, use it for x32 gettimeofday and time.Roland McGrath
2012-05-22Simplify dl-vdso.h use of assert.Roland McGrath
2012-02-09Replace FSF snail mail address with URLs.Paul Eggert
2007-08-14* sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PSELECT,cvs/fedora-glibc-20070814T0725cvs/fedora-glibc-20070814T0643Ulrich Drepper
__ASSUME_PPOLL, __ASSUME_ATFCTS, __ASSUME_SET_ROBUST_LIST, __ASSUME_UTIMENSAT, __ASSUME_FALLOCATE): Update per-arch conditions when each feature was introduced. * sysdeps/unix/sysv/linux/dl-vdso.c: Don't include dl-hash.h. * sysdeps/unix/sysv/linux/dl-vdso.h: Don't include dl-hash.h if NDEBUG. (CHECK_HASH): New macro. (PREPARE_VERSION): Use it. * sysdeps/unix/sysv/linux/pselect.c (__generic_pselect): Only provide prototype if not __ASSUME_PSELECT. * sysdeps/unix/sysv/linux/ppoll.c (__generic_ppoll): Only provide prototype if not __ASSUME_PPOLL. * sysdeps/unix/sysv/linux/dl-osinfo.h (ROUND): #undef after use. * sysdeps/unix/clock_settime.c (freq, __pthread_clock_settime, hp_timing_settime): Don't define or declare if HANDLED_CPUTIME is defined.
2007-08-12* sysdeps/unix/sysv/linux/dl-vdso.c (_dl_vdso_vsym): ExpectUlrich Drepper
r_found_version structure as second parameter. * sysdeps/unix/sysv/linux/dl-vdso.h (PREPARE_VERSION): Define. (_dl_vdso_vsym): Change type of second parameter accordingly. * sysdeps/unix/sysv/linux/x86-64/libc-start.c (_libc_vdso_platform_setup): Adjust. * sysdeps/unix/sysv/linux/pwoerpc/libc-start.c (_libc_vdso_platform_setup): Likewise.
2007-08-12* sysdeps/unix/sysv/linux/powerpc/dl-vdso.c: Move to...Ulrich Drepper
* sysdeps/unix/sysv/linux/dl-vdso.c: ...here. * sysdeps/unix/sysv/linux/powerpc/dl-vdso.h: Move to... * sysdeps/unix/sysv/linux/dl-vdso.h: ...here. * csu/libc-start.c: Pretty printing. Use VDSO_SETUP if defined. * sysdeps/unix/sysv/linux/powerpc/libc-start.c: Define VDSO_SETUP and let generic code call into _libc_vdso_platform_setup. * sysdeps/unix/sysv/linux/x86_64/libc-start.c: New file. * sysdeps/unix/sysv/linux/x86_64/bits/libc-vdso.h: New file. * sysdeps/unix/sysv/linux/x86_64/sysdep.h: Pretty printing. Define INLINE_VSYSCALL and INTERNAL_VSYSCALL. * sysdeps/unix/sysv/linux/x86_64/Versions: Export __vdso_clock_gettime for GLIBC_PRIVATE. * sysdeps/unix/sysv/linux/x86_64/Makefile [subdir=elf] (sysdep_rountines): Add dl-vdso. * sysdeps/unix/sysv/linux/powerpc/Makefile: Use sysdep_routines instead of routines. * sysdeps/unix/sysv/linux/powerpc/bits/libc-vdso.h: Add attribute_hidden to __vdso_gettimeofday prototype.
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-24 06:15:42 +0000