aboutsummaryrefslogtreecommitdiff
path: root/sysdeps
AgeCommit message (Collapse)Author
2018-01-08x86-64: Add sincosf with vector FMAH.J. Lu
Since the x86-64 assembly version of sincosf is higly optimized with vector instructions, there isn't much room for improvement. However s_sincosf.c written in C with vector math and intrinsics can be optimized by GCC with FMA. On Skylake, bench-sincosf reports performance improvement: Assembly FMA improvement max 104.042 101.008 3% min 9.426 8.586 10% mean 20.6209 18.2238 13% * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Add s_sincosf-sse2 and s_sincosf-fma. (CFLAGS-s_sincosf-fma.c): New. * sysdeps/x86_64/fpu/multiarch/s_sincosf-fma.c: New file. * sysdeps/x86_64/fpu/multiarch/s_sincosf-sse2.S: Likewise. * sysdeps/x86_64/fpu/multiarch/s_sincosf.c: Likewise. * sysdeps/x86_64/fpu/s_sincosf.S: Don't add alias if __sincosf is defined.
2018-01-07getrlimit64: fix for 32-bit configurations with default version >= 2.2Aurelien Jarno
Commit 24731685 ("prlimit: Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY") broken the getrlimit64 for 32-bit configurations which do no need the 2GiB limited compat getrlimit (default version >= 2.2). This patch fixes that by restoring the weak alias in that case. Changelog: * sysdeps/unix/sysv/linux/getrlimit64 (getrlimit64) [!__RLIM_T_MATCHES_RLIM64_T] [!SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)]: Define as weak alias of __getrlimit64. Add libc_hidden_weak.
2018-01-07hurd: Fix pwritev*Samuel Thibault
This follows c45d78aac ('posix: Fix generic p{read,write}v buffer allocation (BZ#22457)'), which made pwritev to use __mmap instead of __posix_memalign, but didn't pass PROT_READ to it, while the pwrite() call does need to read the data we have just copied over. * sysdeps/posix/pwritev_common.c: Add PROT_READ to __mmap prot.
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.
2018-01-06hurd: Fix glob64 compatibility symbolsSamuel Thibault
This follows ccf970c7a ('posix: Add compat glob symbol to not follow dangling symbols') by adding to gnu/ the same compatibility as for Linux. * sysdeps/gnu/glob64.c (__glob): Define macro instead of glob macro. (__glob64): Define GLIBC_2_27 versioned symbol instead of glob64. * sysdeps/gnu/glob-lstat-compat.c: New file. * sysdeps/gnu/glob64-lstat-compat.c: New file.
2018-01-06i386: Regenerate libm-test-ulps for for gcc 7 on i686Samuel Thibault
* sysdeps/i386/fpu/libm-test-ulps: Regenerated for GCC 7 with "-O2 -march=i686".
2018-01-06hurd: Fix build without NO_HIDDENSamuel Thibault
* sysdeps/i386/dl-tlsdesc.S (_dl_tlsdesc_dynamic) [NO_RTLD_HIDDEN]: Call JUMPTARGET (___tls_get_addr) instead of HIDDEN_JUMPTARGET (___tls_get_addr). * sysdeps/x86_64/dl-tlsdesc.S (_dl_tlsdesc_dynamic): Likewise.
2018-01-06hurd: Add jmp_buf-macros.hSamuel Thibault
* sysdeps/mach/hurd/i386/jmp_buf-macros.h: New file.
2018-01-05powerpc: Fix error message during relocation overflowTulio Magno Quites Machado Filho
The function _itoa_word() writes characters from the higher address to the lower address, requiring the destination string to reserve that size before calling it. * sysdeps/powerpc/powerpc64/dl-machine.c (_dl_reloc_overflow): Reserve 16 chars to reloc_addr before calling _itoa_word. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-01-05Add test for getrlimit/setrlimit/prlimit with infinity valueAurelien Jarno
Add a test to check that the getrlimit, setrlimit and prlimit functions and their 64-bit equivalent behave correctly with RLIM_INFINITY and RLIM64_INFINITY. For that it assumes that the prlimit64 function calls the syscall directly without translating the value and that the kernel uses the -1 value to represent infinity. It first finds a resource with the hard limit set to infinity so the soft limit can be manipulated easily and check for the consistency between the value set or get by the prlimit64 and the other functions. It is Linux specific add it uses the prlimit and prlimit64 functions. Changelog: * sysdeps/unix/sysv/linux/tst-rlimit-infinity.c: New file. * sysdeps/unix/sysv/linux/Makefile (tests): Add tst-rlimit-infinity.
2018-01-05prlimit: Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY [BZ #22678]Aurelien Jarno
prlimit called without a new value fails on 32-bit machines if any of the soft or hard limits are infinity. This is because prlimit does not translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY, but checks that the value returned by the prlimit64 syscall fits into a 32-bit value, like it is done for example in getrlimit. Note that on the other hand new_rlimit is correctly translated from RLIM_INFINITY to RLIM64_INFINITY before calling the syscall. This patch fixes that. Changelog: [BZ #22678] * sysdeps/unix/sysv/linux/prlimit.c (prlimit): Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY.
2018-01-05Alpha: Fix the RLIM_INFINITY and RLIM64_INFINITY constantsAurelien Jarno
Fix the RLIM_INFINITY and RLIM64_INFINITY constants on alpha to match the kernel one and all other architectures. Change the getrlimit, getrlimit64, setrlimit, setrlimit64 into old compat symbols, and provide the Linux generic functions as GLIBC_2_27 version. Changelog: * sysdeps/unix/sysv/linux/getrlimit64.c [USE_VERSIONED_RLIMIT]: Do not define getrlimit and getrlimit64 as weak aliases of __getrlimit64. Define __GI_getrlimit64 as weak alias of __getrlimit64. [__RLIM_T_MATCHES_RLIM64_T]: Do not redefine SHLIB_COMPAT, use #elif instead. * sysdeps/unix/sysv/linux/setrlimit64.c [USE_VERSIONED_RLIMIT]: Do not define setrlimit and setrlimit64 as weak aliases of __setrlimit64. * sysdeps/unix/sysv/linux/alpha/bits/resource.h (RLIM_INFINITY, RLIM64_INFINITY): Fix values to match the kernel ones. * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: Define USE_VERSIONED_RLIMIT. Rename __getrlimit64 into __old_getrlimit64 and provide it as getrlimit@@GLIBC_2_0 and getrlimit64@@GLIBC_2_1. Add a __getrlimit64 function and provide it as getrlimit@@GLIBC_2_27 and getrlimit64@@GLIBC_2_27. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto with setrlimit and setrlimit64. * sysdeps/unix/sysv/linux/alpha/libc.abilist (GLIBC_2.27): Add getrlimit, setrlimit, getrlimit64 and setrlimit64. * sysdeps/unix/sysv/linux/alpha/Versions (libc): Add getrlimit, setrlimit, getrlimit64 and setrlimit64.
2018-01-05Alpha: Add wrappers to get/setrlimit64 to fix RLIM64_INFINITY constant [BZ ↵Aurelien Jarno
#22648] RLIM64_INFINITY was supposed to be a glibc convention rather than anything seen by the kernel, but it ended being passed to the kernel through the prlimit64 syscall. * On the kernel side, the value is defined for the prlimit64 syscall for all architectures in include/uapi/linux/resource.h: #define RLIM64_INFINITY (~0ULL) * On the kernel side, the value is defined for getrlimit and setrlimit in arch/alpha/include/uapi/asm/resource.h #define RLIM_INFINITY 0x7ffffffffffffffful * On the GNU libc side, the value is defined in sysdeps/unix/sysv/linux/alpha/bits/resource.h: # define RLIM64_INFINITY 0x7fffffffffffffffLL This was not an issue until the getrlimit and setrlimit glibc functions have been changed in commit 045c13d185 ("Consolidate Linux setrlimit and getrlimit implementation") to use the prlimit64 syscall instead of the getrlimit and setrlimit ones. This patch fixes that by adding a wrapper to fix the value passed to or received from the kernel, before or after calling the prlimit64 syscall. Changelog: [BZ #22648] * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: New file. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Ditto.
2018-01-04alpha: Remove s_trunc{f} implementation (BZ#22666)Adhemerval Zanella
As discussed in libc-alpha [1], alpha trunc{f} implementation uses addt/suc and subt/suc and although the Alpha Architecture Handbook version 3 states that that ADDx SUBx OUTPUT Exceptions (B.3 Mapping to IEEE Standard) should not generate Inexact if INE bit is set, the Alpha 21264 [2] chip manual (A.8 IEEE Floating-Point Conformance) states that ADDx SUBx OUTPUT does generate inexact exception for inexact result regardless. As Joseph noted [3] to correctly fix it on alpha we need to either avoid the instruction or avoid any inexact bit from it being set on return from the function (while preserving the inexact bit that might be set on the entry to the function). The later will result mf_fpcr followed by a mt_fpcr to get and set the fpcr which will defeat the optimization itself. So the patch just remove the alpha optimized and rely on generic implementation. It fixes the math/test-*-{trunc} on alpha. [BZ #15479] [BZ #22666] * sysdeps/alpha/fpu/s_trunc.c: Remove file. * sysdeps/alpha/fpu/s_truncf.c: Likewise. [1] https://sourceware.org/ml/libc-alpha/2018-01/msg00114.html [2] https://www.star.bnl.gov/public/daq/HARDWARE/21264_data_sheet.pdf [3] https://sourceware.org/ml/libc-alpha/2018-01/msg00086.html Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-01-04alpha: Remove s_ceil{f} and s_floor{f} implementation (BZ#22665)Adhemerval Zanella
As discussed in libc-alpha [1], alpha ceil{f} and floor{f} implementation uses cvttq/svm and although the Alpha Architecture Handbook version 3 states that that CVTfi OUTPUT Exceptions (B.3 Mapping to IEEE Standard) should not generate Inexact if INE bit is set on fpcr, the Alpha 21264 [1] chip manual (A.8 IEEE Floating-Point Conformance) states that CVTfi and CVTif OUTPUT does generate inexact exception for inexact result regardless. As Joseph noted [2] to correctly fix it on alpha we need to either avoid the instruction or avoid any inexact bit from it being set on return from the function (while preserving the inexact bit that might be set on the entry to the function). The later will result mf_fpcr followed by a mt_fpcr to get and set the fpcr which will defeat the optimization itself. So the patch just remove the alpha optimized and rely on generic implementation. It fixes the math/test-*-{ceil,floor} on alpha. [BZ #15479] [BZ #22665] * sysdeps/alpha/fpu/s_ceil.c: Remove file. * sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. [1] https://www.star.bnl.gov/public/daq/HARDWARE/21264_data_sheet.pdf [2] https://sourceware.org/ml/libc-alpha/2018-01/msg00086.html Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-01-04i386: In makecontext, align the stack before calling exit [BZ #22667]Florian Weimer
Before this change, if glibc was compiled with SSE instructions and a sufficiently recent GCC, an unaligned stack access in __run_exit_handlers would cause stdlib/tst-makecontext to crash.
2018-01-02Update MIPS libm-test-ulps.Joseph Myers
* sysdeps/mips/mips32/libm-test-ulps: Update. * sysdeps/mips/mips64/libm-test-ulps: Likewise.
2018-01-02Simplify getrlimit64.cAurelien Jarno
Changelog: * sysdeps/unix/sysv/linux/alpha/getrlimit64.c (__old_getrlimit64): Drop __RLIM_T_MATCHES_RLIM64_T conditional as __old_getrlimit64 is never defined in that case.
2018-01-02Fix typos in getrlimit64.c and setrlimit64.cAurelien Jarno
Changelog: * sysdeps/unix/sysv/linux/alpha/getrlimit64.c: Fix a typo in the comment. * sysdeps/unix/sysv/linux/alpha/setrlimit64.c: Fix a typo in the comment. (settrlimit): Rename into setrlimit. (__sttrlimit): Rename into __setrlimit.
2018-01-02Update powerpc-nofpu libm-test-ulps.Joseph Myers
* sysdeps/powerpc/nofpu/libm-test-ulps: Update.
2018-01-02Update ARM libm-test-ulps.Joseph Myers
* sysdeps/arm/libm-test-ulps: Update.
2018-01-02Remove alpha specific fmax, fmin to fix sNaN handling [BZ #22660]Aurelien Jarno
Various fmax and fmin function implementations mishandle sNaN arguments: (a) When both arguments are NaNs, the return value should be a qNaN, but sometimes it is an sNaN if at least one argument is an sNaN. (b) Under TS 18661-1 semantics, if either argument is an sNaN then the result should be a qNaN (whereas if one argument is a qNaN and the other is not a NaN, the result should be the non-NaN argument). Various implementations treat sNaNs like qNaNs here. One way to fix that is to detect the sNaN and add a special case. That said there is no FPU instruction to do that, so it requires transfering the FP value to an integer register and testing bits. This becomes quite complicated so it's probably better to just use the generic versions of these functions which just do that through issignaling. Changelog: [BZ #22660] * sysdeps/alpha/fpu/s_fmax.S: Remove file. * sysdeps/alpha/fpu/s_fmaxf.S: Likewise. * sysdeps/alpha/fpu/s_fmin.S: Likewise. * sysdeps/alpha/fpu/s_fminf.S: Likewise.
2018-01-01linux/arm: sync sys/ptrace.h with Linux 4.15 [BZ #22433]Dmitry V. Levin
Clone generic linux/sys/ptrace.h, remove x86-specific PTRACE_GETFPXREGS and PTRACE_SETFPXREGS constants, add the following arm-specific __ptrace_request constants: PTRACE_GETWMMXREGS, PTRACE_SETWMMXREGS, PTRACE_GET_THREAD_AREA, PTRACE_SET_SYSCALL, PTRACE_GETCRUNCHREGS, PTRACE_SETCRUNCHREGS, PTRACE_GETVFPREGS, PTRACE_SETVFPREGS, PTRACE_GETHBPREGS, PTRACE_SETHBPREGS, and PTRACE_GETFDPIC. Tested with strace. * sysdeps/unix/sysv/linux/arm/sys/ptrace.h: New file.
2018-01-01Update copyright dates not handled by scripts/update-copyrights.Joseph Myers
I've updated copyright dates in glibc for 2018. This is the patch for the changes not generated by scripts/update-copyrights and subsequent build / regeneration of generated files. Please remember to include 2018 in the dates for any new files added in future (which means updating any existing uncommitted patches you have that add new files to use the new copyright dates in them). * NEWS: Update copyright dates. * catgets/gencat.c (print_version): Likewise. * csu/version.c (banner): Likewise. * debug/catchsegv.sh: Likewise. * debug/pcprofiledump.c (print_version): Likewise. * debug/xtrace.sh (do_version): Likewise. * elf/ldconfig.c (print_version): Likewise. * elf/ldd.bash.in: Likewise. * elf/pldd.c (print_version): Likewise. * elf/sotruss.sh: Likewise. * elf/sprof.c (print_version): Likewise. * iconv/iconv_prog.c (print_version): Likewise. * iconv/iconvconfig.c (print_version): Likewise. * locale/programs/locale.c (print_version): Likewise. * locale/programs/localedef.c (print_version): Likewise. * login/programs/pt_chown.c (print_version): Likewise. * malloc/memusage.sh (do_version): Likewise. * malloc/memusagestat.c (print_version): Likewise. * malloc/mtrace.pl: Likewise. * manual/libc.texinfo: Likewise. * nptl/version.c (banner): Likewise. * nscd/nscd.c (print_version): Likewise. * nss/getent.c (print_version): Likewise. * nss/makedb.c (print_version): Likewise. * posix/getconf.c (main): Likewise. * scripts/test-installation.pl: Likewise. * sysdeps/unix/sysv/linux/lddlibc4.c (main): 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.
2017-12-29linux/x86: sync sys/ptrace.h with Linux 4.14 [BZ #22433]Dmitry V. Levin
Clone generic linux/sys/ptrace.h, add the following x86-specific __ptrace_request constants: PTRACE_GET_THREAD_AREA, PTRACE_SET_THREAD_AREA, PTRACE_ARCH_PRCTL, PTRACE_SYSEMU, PTRACE_SYSEMU_SINGLESTEP, and PTRACE_SINGLEBLOCK. [BZ #22433] * sysdeps/unix/sysv/linux/x86/sys/ptrace.h: New file.
2017-12-29linux: update sys/ptrace.h commentsDmitry V. Levin
* sysdeps/unix/sysv/linux/sys/ptrace.h (__ptrace_request): Add comments about PTRACE_PEEKSIGINFO, PTRACE_GETSIGMASK, PTRACE_SETSIGMASK, and PTRACE_SECCOMP_GET_FILTER. Update comments about PTRACE_SINGLESTEP and PTRACE_SYSCALL. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h: Likewise.
2017-12-29linux: move a shared part of sys/ptrace.h to bits/ptrace-shared.hDmitry V. Levin
Move a shared part of sys/ptrace.h which is the same on all architectures to a separate file. * sysdeps/unix/sysv/linux/sys/ptrace.h: Include <bits/ptrace-shared.h>. (__ptrace_setoptions, __ptrace_eventcodes, __ptrace_peeksiginfo_args, __ptrace_peeksiginfo_flags, ptrace): Move to ... * sysdeps/unix/sysv/linux/bits/ptrace-shared.h: ... new file. * sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add bits/ptrace-shared.h. * sysdeps/unix/sysv/linux/aarch64/sys/ptrace.h: Include <bits/ptrace-shared.h>. (__ptrace_setoptions, __ptrace_eventcodes, __ptrace_peeksiginfo_args, __ptrace_peeksiginfo_flags, ptrace): Remove. * sysdeps/unix/sysv/linux/ia64/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/s390/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/sparc/sys/ptrace.h: Likewise. * sysdeps/unix/sysv/linux/tile/sys/ptrace.h: Likewise.
2017-12-27elf: remove redundant is_path argumentDmitry V. Levin
is_path argument is no longer used and could be safely removed. * elf/dl-dst.h (DL_DST_COUNT): Remove is_path argument, all callers updated. * elf/dl-load.c (is_dst, _dl_dst_count, _dl_dst_substitute, expand_dynamic_string_token): Likewise. * sysdeps/generic/ldsodefs.h (_dl_dst_count, _dl_dst_substitute): Remove is_path argument.
2017-12-24Deprecate external use of libio.h and _G_config.h.Zack Weinberg
libio.h was originally the header for a set of supported GNU extensions, but they have not been maintained as such in many years, they are now standing in the way of improvements to stdio, and we don't think there are any remaining external users. _G_config.h was never intended for public use, but predates the bits convention. Move both of these headers into the bits directory and provide stubs at top level which issue deprecation warnings. The contents of (bits/)libio.h and (bits/)_G_config.h are still exposed to external software via stdio.h; changing that requires more complex surgery than I have time to attempt right now. * libio/libio.h, libio/_G_config.h: New stub headers which issue a deprecation warning and then include <bits/libio.h>, <bits/_G_config.h> respectively. * libio/libio.h: Rename the original version of this file to libio/bits/libio.h. Error out if not included by stdio.h or the stub libio.h. * include/libio.h: Move to include/bits. Forward to libio/bits/libio.h. * sysdeps/generic/_G_config.h: Move to top-level bits/. Error out if not included by bits/libio.h or the stub _G_config.h. * sysdeps/unix/sysv/linux/_G_config.h: Move to sysdeps/unix/sysv/linux/bits. Error out if not included by bits/libio.h or the stub _G_config.h. * libio/stdio.h: Include bits/libio.h, not libio.h. * libio/Makefile: Install bits/libio.h and bits/_G_config.h as well as libio.h and _G_config.h. * csu/init.c, libio/fmemopen.c, libio/iolibio.h, libio/oldfmemopen.c * libio/strfile.h, stdio-common/vfscanf.c * sysdeps/pthread/flockfile.c, sysdeps/pthread/funlockfile.c Include stdio.h, not _G_config.h nor libio.h. * libio/iofgetpos.c: Also rename fgetpos64 out of the way. * libio/iofsetpos.c: Also rename fsetpos64 out of the way. * scripts/check-installed-headers.sh: Skip libio.h and _G_config.h.
2017-12-23getrandom: fix comment [BZ #22347]Dmitry V. Levin
* stdlib/getrandom.c (getrandom): Fix comment. * sysdeps/unix/sysv/linux/getrandom.c (getrandom): Likewise.
2017-12-22copy_file_range: New function to copy file dataFlorian Weimer
The semantics are based on the Linux system call, but a very close emulation in user space is provided.
2017-12-20Simplify tile assembly definitionsAdhemerval Zanella
With tilepro removal, the uppercase instruction are not anymore required to be defines as potentially macros. This is a mechanical change done by the following shell script: --- INSNS="LD LD4U ST ST4 BNEZ BEQZ BEQZT BGTZ CMPEQI CMPEQ CMOVEQZ CMOVNEZ" FILES=$(find sysdeps/tile sysdeps/unix/sysv/linux/tile -iname *.S) for insn in $INSNS; do repl=$(echo $insn | tr '[:upper:]' '[:lower:]') sed -i 's/\b'$insn'\b/'$repl'/g' $FILES done --- Checked with a build for tilegx-linux-gnu and tilegx-linux-gnu-32 with and without the patch, there is no difference in generated binary with a dissassemble. * sysdeps/tile/__longjmp.S (__longjmp): Use lowercase instructions. * sysdeps/tile/__tls_get_addr.S (__tls_get_addr): Likewise. * sysdeps/tile/_mcount.S (__mcount): Likewise. * sysdeps/tile/crti.S (_init, _fini): Likewise. * sysdeps/tile/crtn.S: Likewise. * sysdeps/tile/dl-start.S (_start): Likewise. * sysdeps/tile/dl-trampoline.S: Likewise. * sysdeps/tile/setjmp.S (__sigsetjmp): Likewise. * sysdeps/tile/start.S (_start): Likewise. * sysdeps/unix/sysv/linux/tile/clone.S (_clone): Likewise. * sysdeps/unix/sysv/linux/tile/getcontext.S (__getcontext): Likewise. * sysdeps/unix/sysv/linux/tile/ioctl.S (__ioctl): Likewise. * sysdeps/unix/sysv/linux/tile/setcontext.S (__setcontext): Likewise. * sysdeps/unix/sysv/linux/tile/swapcontext.S (__swapcontext): Likewise. * sysdeps/unix/sysv/linux/tile/syscall.S (syscall): Likewise. * sysdeps/unix/sysv/linux/tile/vfork.S (__vfork): Likewise.
2017-12-20Simplify tilegx sysdeps folderAdhemerval Zanella
With tilepro support removal we can now simplify internal tile support by moving the directory structure to avoid the unnecessary directory levels in tile/tilegx both on generic and linux folders. Checked with a build for tilegx-linux-gnu and tilegx-linux-gnu-32 with and without the patch, there is no difference in generated binary with a dissassemble. * stdlib/bug-getcontext.c (do_test): Remove tilepro mention in comment. * sysdeps/tile/preconfigure: Remove tilegx folder. * sysdeps/tile/tilegx/Implies: Move definitions to ... * sysdeps/tile/Implies: ... here. * sysdeps/tile/tilegx/Makefile: Move rules to ... * sysdeps/tile/Makefile: ... here. * sysdeps/tile/tilegx/atomic-machine.h: Move definitions to ... * sysdeps/tile/atomic-machine.h: ... here. Add include guards. * sysdeps/tile/tilegx/bits/wordsize.h: Move to ... * sysdeps/tile/bits/wordsize.h: ... here. * sysdeps/tile/tilegx/*: Move to ... * sysdeps/tile/*: ... here. * sysdeps/tile/tilegx/tilegx32/Implies: Move to ... * sysdeps/tile/tilegx32/Implies: ... here. * sysdeps/tile/tilegx/tilegx64/Implies: Move to ... * sysdeps/tile/tilegx64/Implies: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/Makefile: Move definitions to ... * sysdeps/unix/sysv/linux/tile/Makefile: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/*: Move to ... * sysdeps/unix/sysv/linux/tile/*: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx32/*: Move to ... * sysdeps/unix/sysv/linux/tile/tilegx32/*: ... here. * sysdeps/unix/sysv/linux/tile/tilegx/tilegx64/*: Move to ... * sysdeps/unix/sysv/linux/tile/tilegx64/*: ... here.
2017-12-20Remove tilepro-*-linux-gnu supportAdhemerval Zanella
As from previous discussions [1] this patch removes tileprox-*-linux-gnu support from GLIBC. This patch is a straigthfoward one, which just remove tilepro specific implementation and configurations (no sysdep simplfication or reorganization is done). * README: Remove tilepro-*-linux-gnu from supported architecture. * scripts/build-many-glibcs.py: Likewise. * sysdeps/tile/__tls_get_addr.S (__tls_get_addr): Likewise. * sysdeps/tile/crti.S (PREINIT_FUNCTION): Likewise. * sysdeps/tile/dl-machine.h (ELF_MACHINE_NAME, elf_machine_matches_host, elf_machine_dynamic, elf_machine_load_address, elf_machine_runtime_setup, reloc_howto howto, elf_machine_rela): Likewise * sysdeps/tile/dl-start.S (_start): Likewise. * sysdeps/tile/memcmp.c (DBLALIGN, REVBYTES): Likewise. * sysdeps/tile/memcopy.h (MEMCPY_OK_FOR_FWD_MEMMOVE, MEMCPY_OK_FOR_FWD_MEMMOVE, op_t): Likewise. * sysdeps/tile/nptl/pthread_spin_lock.c (TNS, CMPTNS): Likewise. * sysdeps/tile/nptl/pthread_spin_trylock.c (TNS): Likewise. * sysdeps/tile/nptl/pthread_spin_unlock.c (pthread_spin_unlock): Likewise. * sysdeps/tile/nptl/tls.h (DB_THREAD_SELF): Likewise. * sysdeps/tile/preconfigure: Likewise. * sysdeps/tile/stackguard-macros.h (STACK_CHK_GUARD, POINTER_CHK_GUARD): Likewise. * sysdeps/tile/stackinfo.h (__stackinfo_sub): Likewise. * sysdeps/tile/start.S (_start): Likewise. * sysdeps/tile/tls-macros.h (TLS_GD_OFFSET, TLS_IE_OFFSET, _TLS_LE): Likewise. * sysdeps/tile/sysdep.h (REGSIZE): Likewise. (LD, LD4U, ST, ST4, BNEZ, BEQZ, BEQZT, BGTZ, CMPEQI, CMPEQ, CMOVEQZ, CMOVNEZ): Remove. * sysdeps/unix/sysv/linux/tile/bits/environments.h (__ILP32_OFF32_CFLAGS, __ILP32_OFFBIG_CFLAGS, __ILP32_OFF32_LDFLAGS, __ILP32_OFFBIG_LDFLAGS, __LP64_OFF64_CFLAGS, __LP64_OFF64_LDFLAGS): Likewise. * sysdeps/tile/wordcopy.c (DBLALIGN): Likewise. * sysdeps/tile/tilepro/Implies: Remove file. * sysdeps/tile/tilepro/atomic-machine.h: Likewise. * sysdeps/tile/tilepro/bits/wordsize.h: Likewise. * sysdeps/tile/tilepro/memchr.c: Likewise. * sysdeps/tile/tilepro/memcpy.S: Likewise. * sysdeps/tile/tilepro/memset.c: Likewise. * sysdeps/tile/tilepro/memusage.h: Likewise. * sysdeps/tile/tilepro/rawmemchr.c: Likewise. * sysdeps/tile/tilepro/strchr.c: Likewise. * sysdeps/tile/tilepro/strchrnul.c: Likewise. * sysdeps/tile/tilepro/strlen.c: Likewise. * sysdeps/tile/tilepro/strrchr.c: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/Implies: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/c++-types.data: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/jmp_buf-macros.h: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/ldconfig.h: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libBrokenLocale.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libanl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libc.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libcrypt.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libdl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libm.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libnsl.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libpthread.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libresolv.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/librt.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libthread_db.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/libutil.abilist: Likewise. * sysdeps/unix/sysv/linux/tile/tilepro/register-dump.h: Likewise. * sysdeps/unix/sysv/linux/tile/sysconf.c (linux_sysconf): Remove tilepro mention in comment. [1] https://sourceware.org/ml/libc-alpha/2017-12/msg00038.html
2017-12-20nptl: Consolidate pthread_{timed,try}join{_np}Adhemerval Zanella
This patch consolidates the pthread_join and gnu extensions to avoid code duplication. The function pthread_join, pthread_tryjoin_np, and pthread_timedjoin_np are now based on pthread_timedjoin_ex. It also fixes some inconsistencies on ESRCH, EINVAL, EDEADLK handling (where each implementation differs from each other) and also on clenup handler (which now always use a CAS). Checked on i686-linux-gnu and x86_64-linux-gnu. * nptl/pthreadP.h (__pthread_timedjoin_np): Define. * nptl/pthread_join.c (pthread_join): Use __pthread_timedjoin_np. * nptl/pthread_tryjoin.c (pthread_tryjoin): Likewise. * nptl/pthread_timedjoin.c (cleanup): Use CAS on argument setting. (pthread_timedjoin_np): Define internal symbol and common code from pthread_join. * sysdeps/unix/sysv/linux/i386/lowlevellock.h (__lll_timedwait_tid): Remove superflous checks. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_timedwait_tid): Likewise. Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Carlos O'Donell <carlos@redhat.com>
2017-12-20aarch64: update libm-test-ulpsSzabolcs Nagy
* sysdeps/aarch64/libm-test-ulps: Update.
2017-12-20aarch64: fix memset with --disable-multi-archAdhemerval Zanella
* sysdeps/aarch64/memset.S (MEMSET): Define.
2017-12-20nptl: Implement pthread_self in libc.so [BZ #22635]Florian Weimer
All binaries use TLS and thus need a properly set up TCB, so we can simply return its address directly, instead of forwarding to the libpthread implementation from libc. For versioned symbols, the dynamic linker checks that the soname matches the name supplied by the link editor, so a compatibility symbol in libpthread is needed. To avoid linking against the libpthread function in all cases, we would have to bump the symbol version of libpthread in libc.so and supply a compat symbol. This commit does not do that because the function implementation is so small, so the overhead by two active copies of the same function might well be smaller than the increase in symbol table size.
2017-12-19Provide a C++ version of iseqsig (bug 22377)Gabriel F. T. Gomes
In C++ mode, __MATH_TG cannot be used for defining iseqsig, because __MATH_TG relies on __builtin_types_compatible_p, which is a C-only builtin. This is true when float128 is provided as an ABI-distinct type from long double. Moreover, the comparison macros from ISO C take two floating-point arguments, which need not have the same type. Choosing what underlying function to call requires evaluating the formats of the arguments, then selecting which is wider. The macro __MATH_EVAL_FMT2 provides this information, however, only the type of the macro expansion is relevant (actually evaluating the expression would be incorrect). This patch provides a C++ version of iseqsig, in which only the type of __MATH_EVAL_FMT2 (__typeof or decltype) is used as a template parameter for __iseqsig_type. This function calls the appropriate underlying function. Tested for powerpc64le and x86_64. [BZ #22377] * math/Makefile [C++] (tests): Add test for iseqsig. * math/math.h [C++] (iseqsig): New implementation, which does not rely on __MATH_TG/__builtin_types_compatible_p. * math/test-math-iseqsig.cc: New file. * sysdeps/powerpc/powerpc64le/Makefile (CFLAGS-test-math-iseqsig.cc): New variable.
2017-12-19Avoid signed shift overflow in pow (bug 21309).Bernd Edlinger
As noted in bug 21309, dbl-64/e_pow.c contains signed int shifts that, although the shift count is in the range [0, 31], shift bits into and beyond the sign bit and so are undefined in ISO C. Although this is defined in GNU C, this patch from the bug cleans up the code to avoid those shifts. Tested for x86_64. [BZ #21309] * sysdeps/ieee754/dbl-64/e_pow.c (checkint): Make m and n unsigned.
2017-12-19Revert exp reimplementation (causes test failures).Joseph Myers
Revert: 2017-12-19 Joseph Myers <joseph@codesourcery.com> * sysdeps/x86_64/fpu/libm-test-ulps: Update. 2017-12-19 Patrick McGehearty <patrick.mcgehearty@oracle.com> * sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and <errno.h>. Include "eexp.tbl". (half): New constant. (one): Likewise. (__ieee754_exp): Rewrite. (__slowexp): Remove prototype. * sysdeps/ieee754/dbl-64/eexp.tbl: New file. * sysdeps/ieee754/dbl-64/slowexp.c: Remove file. * sysdeps/i386/fpu/slowexp.c: Likewise. * sysdeps/ia64/fpu/slowexp.c: Likewise. * sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise. * sysdeps/generic/math_private.h (__slowexp): Remove prototype. * sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in comment. * sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math] (CPPFLAGS-slowexp.c): Remove variable. * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Remove slowexp-fma, slowexp-fma4 and slowexp-avx. (CFLAGS-slowexp-fma.c): Remove variable. (CFLAGS-slowexp-fma4.c): Likewise. (CFLAGS-slowexp-avx.c): Likewise. * sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not define as macro. * sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise. * sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise. * math/Makefile (type-double-routines): Remove slowexp. * manual/probes.texi (slowexp_p6): Remove. (slowexp_p32): Likewise.
2017-12-19Update x86_64 libm-test-ulps.Joseph Myers
* sysdeps/x86_64/fpu/libm-test-ulps: Update.
2017-12-19Improve __ieee754_exp() performance by greater than 5x on sparc/x86.Patrick McGehearty
These changes will be active for all platforms that don't provide their own exp() routines. They will also be active for ieee754 versions of ccos, ccosh, cosh, csin, csinh, sinh, exp10, gamma, and erf. Typical performance gains is typically around 5x when measured on Sparc s7 for common values between exp(1) and exp(40). Using the glibc perf tests on sparc, sparc (nsec) x86 (nsec) old new old new max 17629 395 5173 144 min 399 54 15 13 mean 5317 200 1349 23 The extreme max times for the old (ieee754) exp are due to the multiprecision computation in the old algorithm when the true value is very near 0.5 ulp away from an value representable in double precision. The new algorithm does not take special measures for those cases. The current glibc exp perf tests overrepresent those values. Informal testing suggests approximately one in 200 cases might invoke the high cost computation. The performance advantage of the new algorithm for other values is still large but not as large as indicated by the chart above. Glibc correctness tests for exp() and expf() were run. Within the test suite 3 input values were found to cause 1 bit differences (ulp) when "FE_TONEAREST" rounding mode is set. No differences in exp() were seen for the tested values for the other rounding modes. Typical example: exp(-0x1.760cd2p+0) (-1.46113312244415283203125) new code: 2.31973271630014299393707e-01 0x1.db14cd799387ap-3 old code: 2.31973271630014271638132e-01 0x1.db14cd7993879p-3 exp = 2.31973271630014285508337 (high precision) Old delta: off by 0.49 ulp New delta: off by 0.51 ulp In addition, because ieee754_exp() is used by other routines, cexp() showed test results with very small imaginary input values where the imaginary portion of the result was off by 3 ulp when in upward rounding mode, but not in the other rounding modes. For x86, tgamma showed a few values where the ulp increased to 6 (max ulp for tgamma is 5). Sparc tgamma did not show these failures. I presume the tgamma differences are due to compiler optimization differences within the gamma function.The gamma function is known to be difficult to compute accurately. * sysdeps/ieee754/dbl-64/e_exp.c: Include <math-svid-compat.h> and <errno.h>. Include "eexp.tbl". (half): New constant. (one): Likewise. (__ieee754_exp): Rewrite. (__slowexp): Remove prototype. * sysdeps/ieee754/dbl-64/eexp.tbl: New file. * sysdeps/ieee754/dbl-64/slowexp.c: Remove file. * sysdeps/i386/fpu/slowexp.c: Likewise. * sysdeps/ia64/fpu/slowexp.c: Likewise. * sysdeps/m68k/m680x0/fpu/slowexp.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-avx.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-fma.c: Likewise. * sysdeps/x86_64/fpu/multiarch/slowexp-fma4.c: Likewise. * sysdeps/generic/math_private.h (__slowexp): Remove prototype. * sysdeps/ieee754/dbl-64/e_pow.c: Remove mention of slowexp.c in comment. * sysdeps/powerpc/power4/fpu/Makefile [$(subdir) = math] (CPPFLAGS-slowexp.c): Remove variable. * sysdeps/x86_64/fpu/multiarch/Makefile (libm-sysdep_routines): Remove slowexp-fma, slowexp-fma4 and slowexp-avx. (CFLAGS-slowexp-fma.c): Remove variable. (CFLAGS-slowexp-fma4.c): Likewise. (CFLAGS-slowexp-avx.c): Likewise. * sysdeps/x86_64/fpu/multiarch/e_exp-avx.c (__slowexp): Do not define as macro. * sysdeps/x86_64/fpu/multiarch/e_exp-fma.c (__slowexp): Likewise. * sysdeps/x86_64/fpu/multiarch/e_exp-fma4.c (__slowexp): Likewise. * math/Makefile (type-double-routines): Remove slowexp. * manual/probes.texi (slowexp_p6): Remove. (slowexp_p32): Likewise.
2017-12-19ia64: Fix memchr for large input sizes (BZ #22603)Adhemerval Zanella
Current optimized ia64 memchr uses a strategy to check for last address by adding the input one with expected size. However it does not take care for possible overflow. It was triggered by 3038145ca23 where default rawmemchr now uses memchr (p, c, (size_t)-1). This patch fixes it by implement a satured addition where overflows sets the maximum pointer size to UINTPTR_MAX. Checked on ia64-linux-gnu where it fixes both stratcliff and test-rawmemchr failures. Adhemerval Zanella <adhemerval.zanella@linaro.org> James Clarke <jrtc27@jrtc27.com> [BZ #22603] * sysdeps/ia64/memchr.S (__memchr): Avoid overflow in pointer addition.
2017-12-19sh: Fix clone exit return code (BZ #22605)Adhemerval Zanella
Since 3f823e87cc (Call exit directly in clone (BZ #21512)) SH clone implementation fails to set the exit code resulting in the failures: FAIL: nptl/tst-align-clone FAIL: nptl/tst-getpid1 This patch fixes the both testcases. [BZ #22605] * sysdeps/unix/sysv/linux/sh/clone.S (__clone): Fix exit return code. Signed-off-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2017-12-19x86: Add feature_1 to tcbhead_t [BZ #22563]H.J. Lu
On x86, padding in struct __jmp_buf_tag is used for shadow stack pointer to support Shadow Stack in Intel Control-flow Enforcemen Technology. cancel_jmp_buf has been updated to include saved_mask so that it is as large as struct __jmp_buf_tag. We must suport the old cancel_jmp_buf in existing binaries. Since symbol versioning doesn't work on cancel_jmp_buf, feature_1 is added to tcbhead_t so that setjmp and longjmp can check if shadow stack is enabled. NB: Shadow stack is enabled only if all modules are shadow stack enabled. [BZ #22563] * sysdeps/i386/nptl/tcb-offsets.sym (FEATURE_1_OFFSET): New. * sysdeps/i386/nptl/tls.h (tcbhead_t): Add feature_1. * sysdeps/x86_64/nptl/tcb-offsets.sym (FEATURE_1_OFFSET): New. * sysdeps/x86_64/nptl/tls.h (tcbhead_t): Rename __glibc_unused1 to feature_1.
2017-12-19Linux/x86: Update cancel_jmp_buf to match __jmp_buf_tag [BZ #22563]H.J. Lu
On x86, padding in struct __jmp_buf_tag is used for shadow stack pointer to support shadow stack in Intel Control-flow Enforcemen Technology. Since the cancel_jmp_buf array is passed to setjmp and longjmp by casting it to pointer to struct __jmp_buf_tag, it should be as large as struct __jmp_buf_tag. Otherwise when shadow stack is enabled, setjmp and longjmp will write and read beyond cancel_jmp_buf when saving and restoring shadow stack pointer. This patch adds bits/types/__cancel_jmp_buf_tag.h to define struct __cancel_jmp_buf_tag so that Linux/x86 can add saved_mask to cancel_jmp_buf. Tested natively on i386, x86_64 and x32. Tested hppa-linux-gnu with build-many-glibcs.py. [BZ #22563] * bits/types/__cancel_jmp_buf_tag.h: New file. * sysdeps/unix/sysv/linux/x86/bits/types/__cancel_jmp_buf_tag.h * sysdeps/unix/sysv/linux/x86/pthreaddef.h: Likewise. * sysdeps/unix/sysv/linux/x86/nptl/pthreadP.h: Likewise. * nptl/Makefile (headers): Add bits/types/__cancel_jmp_buf_tag.h. * nptl/descr.h [NEED_SAVED_MASK_IN_CANCEL_JMP_BUF] (pthread_unwind_buf): Add saved_mask to cancel_jmp_buf. * sysdeps/nptl/pthread.h: Include <bits/types/__cancel_jmp_buf_tag.h>. (__pthread_unwind_buf_t): Use struct __cancel_jmp_buf_tag with __cancel_jmp_buf. * sysdeps/unix/sysv/linux/hppa/pthread.h: Likewise.
2017-12-19Fix m68k bits/mathinline.h attributes (bug 22631).Joseph Myers
m68k bits/mathinline.h declares various functions with const attributes. These are inappropriate for functions that have results depending on the rounding mode; the machine-independent bits/mathcalls.h only uses const attributes for a very few functions with no rounding mode dependence, and the m68k header should do likewise. GCC uses pure for such functions with -frounding-math, resulting in GCC mainline warning for conflicts with between the header and the built-in attributes and glibc failing to build for m68k with GCC mainline. This patch fixes the attributes to avoid using const except when bits/mathcalls.h does so. (There are a few functions where maybe bits/mathcalls.h could do so but doesn't, but keeping the headers in sync in this regard seems to be the safe approach.) Tested compilation with build-many-glibcs.py with GCC mainline. [BZ #22631] * sysdeps/m68k/m680x0/fpu/bits/mathinline.h (__m81_defun): Add argument for attrubutes. All callers changed. (__inline_mathop1): Likewise. All callers changed. (__inline_mathop): Likewise. All callers changed. [__USE_MISC] (scalbn): Use __inline_forward instead of __inline_forward_c. [__USE_ISOC99] (scalbln): Likewise. [__USE_ISOC99] (nearbyint): Likewise. [__USE_ISOC99] (lrint): Likewise. [__USE_MISC] (scalbnf): Likewise. [__USE_ISOC99] (scalblnf): Likewise. [__USE_ISOC99] (nearbyintf): Likewise. [__USE_ISOC99] (lrintf): Likewise. [__USE_MISC] (scalbnl): Likewise. [__USE_ISOC99] (scalblnl): Likewise. [__USE_ISOC99] (nearbyintl): Likewise. [__USE_ISOC99] (lrintl): Likewise. * sysdeps/m68k/m680x0/fpu/mathimpl.h: All callers of __inline_mathop and __m81_defun changed.
2017-12-18ld.so: Examine GLRO to detect inactive loader [BZ #20204]Florian Weimer
GLRO (_rtld_global_ro) is read-only after initialization and can therefore not be patched at run time, unlike the hook table addresses and their contents, so this is a desirable hardening feature. The hooks are only needed if ld.so has not been initialized, and this happens only after static dlopen (dlmopen uses a single ld.so object across all namespaces). Reviewed-by: Carlos O'Donell <carlos@redhat.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-20 15:30:54 +0000