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* powerpc: Fix llround spurious inexact on 32-bit POWER4 [BZ #22697]Tulio Magno Quites Machado Filho2018-01-121-0/+5
| | | | | | | | | | This issue is similar to BZ #19235, where spurious exceptions are created from adding 0.5 then converting to an integer. The solution is based on Joseph's fix for BZ #19235. [BZ #22697] * sysdeps/powerpc/powerpc32/power4/fpu/s_llround.S (__llround): Do not add 0.5 to integer or out-of-range arguments.
* aarch64: fix static pie enabled libc when main is in a shared librarySzabolcs Nagy2018-01-121-2/+11
| | | | | | | | | | | | | | | | | In the static pie enabled libc, crt1.o uses the same position independent code as rcrt1.o and crt1.o is used instead of Scrt1.o when -no-pie executables are linked. When main is not defined in the executable, but in a shared library crt1.o is currently broken, it assumes main is local. (glibc has a test for this but i missed it in my previous testing.) To make both rcrt1.o and crt1.o happy with the same code, a wrapper is introduced around main: with this crt1.o works with extern main symbol while rcrt1.o does not depend on GOT relocations. (The change only affects static pie enabled libc. Further simplification of start.S is possible in the future by using the same approach for Scrt1.o too.) * aarch64/start.S (_start): Use __wrap_main. (__wrap_main): New local symbol.
* linux: make getcwd(3) fail if it cannot obtain an absolute path [BZ #22679]Dmitry V. Levin2018-01-121-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | Currently getcwd(3) can succeed without returning an absolute path because the underlying getcwd syscall, starting with linux commit v2.6.36-rc1~96^2~2, may succeed without returning an absolute path. This is a conformance issue because "The getcwd() function shall place an absolute pathname of the current working directory in the array pointed to by buf, and return buf". This is also a security issue because a non-absolute path returned by getcwd(3) causes a buffer underflow in realpath(3). Fix this by checking the path returned by getcwd syscall and falling back to generic_getcwd if the path is not absolute, effectively making getcwd(3) fail with ENOENT. The error code is chosen for consistency with the case when the current directory is unlinked. [BZ #22679] CVE-2018-1000001 * sysdeps/unix/sysv/linux/getcwd.c (__getcwd): Fall back to generic_getcwd if the path returned by getcwd syscall is not absolute. * io/tst-getcwd-abspath.c: New test. * io/Makefile (tests): Add tst-getcwd-abspath.
* Fix s390 linknamespace fallout of bug 22702 patch.Joseph Myers2018-01-121-1/+1
| | | | | | | | | | | | | | | My fix for bug 22702 introduced linknamespace test failures on s390x-linux-gnu and s390-linux-gnu because it made remainder call __feholdexcept, and the s390 __feholdexcept calls fegetenv, and remainder is in Unix98 and XPG4.2 but fegetenv isn't. This patch makes __feholdexcept call __fegetenv instead to avoid that namespace issue. Tested (compilation) with build-many-glibcs.py for s390x-linux-gnu, where it resolves the test failures. * sysdeps/s390/fpu/feholdexcpt.c (__feholdexcept): Call __fegetenv instead of fegetenv.
* Make default libc_feholdsetround_noex_ctx use __feholdexcept (bug 22702).Joseph Myers2018-01-111-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For soft-float powerpc, the math/test-nearbyint-except-2 test fails because nearbyintl traps when traps on "inexact" are enabled on entry (and an "inexact" exception is generated internally, though cleared for the final return). The problem is the default implementation of libc_feholdsetround_noex_ctx, which does not disable exception traps. There is some ambiguity about whether the *noex* interfaces are required to do so or only permitted to do so. But given that we support fe* interfaces to enable and disable traps (on architectures with that functionality), functions that must not raise an exception (must not leave the flag set on exit if not set on entry) should also not trap on it when traps on that exception are enabled. So it is appropriate to define these interfaces to have the feholdexcept effect of disabling exception traps; this patch updates the default implementation and comments accordingly. At least some architecture versions already disable traps; there are few uses of the *noex* interfaces at all, and while it's possible there are bugs on any architecture versions failing to disable traps that appear in the exp2 and remainder implementations, there are currently no tests, other than this one for nearbyintl (where only the ldbl-128ibm implementation uses SET_RESTORE_ROUND_NOEX), that would fail as a result of such a bug. (Hard-float powerpc does disable traps here, hence the nearbyintl failure not appearing there.) Tested for powerpc (soft-float). This brings that configuration to clean math/ test results, provided you build with GCC 8 to get the fix for GCC bug 64811. [BZ #22702] * sysdeps/generic/math_private.h (libc_feresetround_noex): Update comment to say exceptions are discarded. (libc_feholdsetround_noex_ctx): Use __feholdexcept instead of __fegetenv. (SET_RESTORE_ROUND_NOEX): Update comment to say non-stop mode must be enabled.
* csu: Update __libgcc_s_init commentFlorian Weimer2018-01-111-2/+6
| | | | Reviewed-by: Carlos O'Donell <carlos@redhat.com>
* Fix ldbl-128ibm log1pl (-qNaN) spurious "invalid" exception (bug 22693).Joseph Myers2018-01-101-2/+2
| | | | | | | | | | | | | | | The ldbl-128ibm implementation of log1pl does ordered comparisons on a negative qNaN argument, so resulting in spurious "invalid" exceptions (for soft-float powerpc; hard-float only avoids this because of GCC bug 58684 meaning ordered comparison instructions never get generated). This patch fixes this by arranging for the test for NaN or infinity arguments to handle negative arguments as well. Tested for powerpc (soft float). [BZ #22693] * sysdeps/ieee754/ldbl-128ibm/s_log1pl.c (__log1pl): Handle negative arguments in test for NaN or infinity argument.
* nptl: Open libgcc.so with RTLD_NOW during pthread_cancel [BZ #22636]Florian Weimer2018-01-101-1/+1
| | | | | | | | | Disabling lazy binding reduces stack usage during unwinding. Note that RTLD_NOW only makes a difference if libgcc.so has not already been loaded, so this is only a partial fix. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* hurd: Implement faccessat without AT_EACCESS flagSamuel Thibault2018-01-103-184/+169
| | | | | | | | | | | | | | | | | | | | | | * hurd/hurd/fd.h: Include <fcntl.h> (__hurd_at_flags): New function. * hurd/lookup-at.c (__file_name_lookup_at): Replace flag computation with call to __hurd_at_flags. * include/unistd.h (__faccessat, __faccessat_noerrno): Add declaration. * sysdeps/mach/hurd/access.c (access_common): Move implementation to __faccessat (hurd_fail_seterrno, hurd_fail_noerrno): Move to sysdeps/mach/hurd/faccessat.c. (__access_noerrno): Use __faccessat_common instead of access_common. (__access): Likewise. * sysdeps/mach/hurd/euidaccess.c (__euidaccess): Replace implementation with a call to __faccessat. * sysdeps/mach/hurd/faccessat.c (faccessat): Rename into... (__faccessat_common): ... this. Move implementation of __access into it when AT_FLAGS does not contain AT_EACCESS. Make it call __hurd_at_flags, add reauthenticate_cwdir_at helper to implement AT mechanism. (__faccessat_noerrno): New function, just calls __faccessat_common. (__faccessat): New function, just calls __faccessat_common. (faccessat): Define weak alias.
* Fix powerpc-nofpu fmaxmagl, fminmagl spurious "invalid" exception (bug 22691).Joseph Myers2018-01-101-0/+2
| | | | | | | | | | | | | | For soft-float powerpc, fmaxmagl and fminmagl generate spurious "invalid" exceptions for quiet NaN arguments. This is another case of the problems with fabsl inline expansion via comparisons, and so is fixed by building those functions with -fno-builtin-fabsl. Tested for powerpc (soft-float). [BZ #22691] * sysdeps/powerpc/nofpu/Makefile [$(subdir) = math] (CFLAGS-s_fmaxmagl.c): New variable. [$(subdir) = math] (CFLAGS-s_fminmagl.c: Likewise.
* Fix ldbl-128ibm lrintl, lroundl missing "invalid" exceptions (bug 22690).Joseph Myers2018-01-102-12/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The ldbl-128ibm implementations of lrintl and lroundl are missing "invalid" exceptions for certain overflow cases when compiled with GCC 8. The cause of this is after-the-fact integer overflow checks that fail when the compiler optimizes on the basis of integer overflow being undefined; GCC 8 must be able to detect new cases of undefinedness here. Failure: lrint (-0x80000001p0): Exception "Invalid operation" not set Failure: lrint_downward (-0x80000001p0): Exception "Invalid operation" not set Failure: lrint_towardzero (-0x80000001p0): Exception "Invalid operation" not set Failure: lrint_upward (-0x80000001p0): Exception "Invalid operation" not set Failure: lround (-0x80000001p0): Exception "Invalid operation" not set Failure: lround_downward (-0x80000001p0): Exception "Invalid operation" not set Failure: lround_towardzero (-0x80000001p0): Exception "Invalid operation" not set Failure: lround_upward (-0x80000001p0): Exception "Invalid operation" not set (Tested that these failures occur before the patch for powerpc soft-float, but the issue applies in principle for hard-float as well, whether or not the particular optimizations in fact occur there at present.) This patch fixes the bug by ensuring the additions / subtractions in question cast arguments to unsigned long int, or use 1UL as a constant argument, so that the arithmetic occurs in an unsigned type with the result then converted back to a signed type. Tested for powerpc (soft-float). [BZ #22690] * sysdeps/ieee754/ldbl-128ibm/s_lrintl.c (__lrintl): Use unsigned long int for arguments of possibly overflowing addition or subtraction. * sysdeps/ieee754/ldbl-128ibm/s_lroundl.c (__lroundl): Likewise.
* Fix powerpc-nofpu remainderl wrong sign of zero result (bug 22688).Joseph Myers2018-01-091-0/+1
| | | | | | | | | | | | | For soft-float powerpc, the remainderl function produces zero results with the wrong sign for various inputs. This is another instance of the problem with incorrect built-in fabsl expansion, so is fixed by this patch using -fno-builtin-fabsl for this function. Tested for powerpc (soft-float). [BZ #22688] * sysdeps/powerpc/nofpu/Makefile [$(subdir) = math] (CFLAGS-e_remainderl.c): New variable.
* Fix powerpc-nofpu complex long double functions spurious "invalid" exception ↵Joseph Myers2018-01-091-6/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | (bug 22687). For soft-float powerpc, various _Complex long double functions generate spurious "invalid" exceptions, even with a compiler with GCC bug 64811 fixed. The problem is GCC's built-in fabsl expansion. Various files are already built with -fno-builtin-fabsl because in this case (IBM long double, for soft-float or e500v1) a fallback fabsl expansion based on comparisons is used, which can produce the wrong sign of a zero result. Those comparisons can also produce spurious exceptions for NaN arguments. Furthermore, __builtin_fpclassify implemently uses __builtin_fabsl, and is unaffected by -fno-builtin-fabsl, and the fpclassify macro uses __builtin_fpclassify in the absence of -fsignaling-nans. Thus, this patch arranges for the problem files using fpclassify to be built with -fsignaling-nans in this case, to avoid spurious exceptions from fpclassify. Tested for powerpc (soft-float). [BZ #22687] * sysdeps/powerpc/nofpu/Makefile (CFLAGS-s_cacosl.c): New variable. (CFLAGS-s_cacoshl.c): Likewise. (CFLAGS-s_casinhl.c): Likewise. (CFLAGS-s_catanl.c): Likewise. (CFLAGS-s_catanhl.c): Likewise. (CFLAGS-s_cexpl.c): Likewise. (CFLAGS-s_ccoshl.c): Add -fsignaling-nans. (CFLAGS-s_csinhl.c): Likewise. (CFLAGS-s_clogl.c): Likewise. (CFLAGS-s_clog10l.c): Likewise. (CFLAGS-s_csinl.c): Likewise. (CFLAGS-s_csqrtl.c): Likewise.
* hurd: Use the new file_exec_paths RPCSamuel Thibault2018-01-093-21/+94
| | | | | | | | | | | | | | | | | | | | | | From: Emilio Pozuelo Monfort <pochu27@gmail.com> From: Svante Signell <svante.signell@gmail.com> Pass the file paths of executable to the exec server, both relative and absolute, which exec needs to properly execute and avertise #!-scripts. Previously, the exec server tried to guess the name from argv[0] but argv[0] only contains the executable name by convention. * hurd/hurdexec.c (_hurd_exec): Deprecate function. (_hurd_exec_paths): New function. * hurd/hurd.h (_hurd_exec): Deprecate function. (_hurd_exec_paths): Declare function. * hurd/Versions: Export _hurd_exec_paths. * sysdeps/mach/hurd/execve.c: Include <stdlib.h> and <stdio.h> (__execve): Use __getcwd to build absolute path, and use _hurd_exec_paths instead of _hurd_exec. * sysdeps/mach/hurd/spawni.c: Likewise. * sysdeps/mach/hurd/fexecve.c: Use _hurd_exec_paths instead of _hurd_exec.
* tst-ttyname: skip the test when /dev/ptmx is not availableDmitry V. Levin2018-01-081-1/+8
| | | | | * sysdeps/unix/sysv/linux/tst-ttyname.c (do_in_chroot_1): Skip the test instead of failing in case of ENOENT returned by posix_openpt.
* x86-64: Add sincosf with vector FMAH.J. Lu2018-01-085-2/+275
| | | | | | | | | | | | | | | | | | | | | | | 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.
* getrlimit64: fix for 32-bit configurations with default version >= 2.2Aurelien Jarno2018-01-071-0/+3
| | | | | | | | | | | | | | 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.
* hurd: Fix pwritev*Samuel Thibault2018-01-071-1/+1
| | | | | | | | | 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.
* Add linux-4.15 VDSO hash for RISC-VPalmer Dabbelt2018-01-061-0/+2
| | | | | | | | | | 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.
* hurd: Fix glob64 compatibility symbolsSamuel Thibault2018-01-063-3/+90
| | | | | | | | | | 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.
* i386: Regenerate libm-test-ulps for for gcc 7 on i686Samuel Thibault2018-01-061-12/+12
| | | | | * sysdeps/i386/fpu/libm-test-ulps: Regenerated for GCC 7 with "-O2 -march=i686".
* hurd: Fix build without NO_HIDDENSamuel Thibault2018-01-062-0/+8
| | | | | | * 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.
* hurd: Add jmp_buf-macros.hSamuel Thibault2018-01-061-0/+6
| | | | * sysdeps/mach/hurd/i386/jmp_buf-macros.h: New file.
* powerpc: Fix error message during relocation overflowTulio Magno Quites Machado Filho2018-01-051-1/+4
| | | | | | | | | | | | 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>
* Add test for getrlimit/setrlimit/prlimit with infinity valueAurelien Jarno2018-01-052-1/+175
| | | | | | | | | | | | | | | | | | 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.
* prlimit: Translate old_rlimit from RLIM64_INFINITY to RLIM_INFINITY [BZ #22678]Aurelien Jarno2018-01-051-6/+9
| | | | | | | | | | | | | | | | | 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.
* Alpha: Fix the RLIM_INFINITY and RLIM64_INFINITY constantsAurelien Jarno2018-01-057-63/+59
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Alpha: Add wrappers to get/setrlimit64 to fix RLIM64_INFINITY constant [BZ ↵Aurelien Jarno2018-01-052-0/+125
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | #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.
* alpha: Remove s_trunc{f} implementation (BZ#22666)Adhemerval Zanella2018-01-042-89/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* alpha: Remove s_ceil{f} and s_floor{f} implementation (BZ#22665)Adhemerval Zanella2018-01-044-210/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* i386: In makecontext, align the stack before calling exit [BZ #22667]Florian Weimer2018-01-041-2/+12
| | | | | | 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.
* Update MIPS libm-test-ulps.Joseph Myers2018-01-022-56/+68
| | | | | * sysdeps/mips/mips32/libm-test-ulps: Update. * sysdeps/mips/mips64/libm-test-ulps: Likewise.
* Simplify getrlimit64.cAurelien Jarno2018-01-021-4/+0
| | | | | | | 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.
* Fix typos in getrlimit64.c and setrlimit64.cAurelien Jarno2018-01-022-4/+4
| | | | | | | | | | 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.
* Update powerpc-nofpu libm-test-ulps.Joseph Myers2018-01-021-28/+34
| | | | * sysdeps/powerpc/nofpu/libm-test-ulps: Update.
* Update ARM libm-test-ulps.Joseph Myers2018-01-021-26/+26
| | | | * sysdeps/arm/libm-test-ulps: Update.
* Remove alpha specific fmax, fmin to fix sNaN handling [BZ #22660]Aurelien Jarno2018-01-024-106/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* linux/arm: sync sys/ptrace.h with Linux 4.15 [BZ #22433]Dmitry V. Levin2018-01-011-0/+204
| | | | | | | | | | | | | 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.
* Update copyright dates not handled by scripts/update-copyrights.Joseph Myers2018-01-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Update copyright dates with scripts/update-copyrights.Joseph Myers2018-01-015542-5542/+5542
| | | | | | | * 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.
* linux/x86: sync sys/ptrace.h with Linux 4.14 [BZ #22433]Dmitry V. Levin2017-12-291-0/+194
| | | | | | | | | | 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.
* linux: update sys/ptrace.h commentsDmitry V. Levin2017-12-297-25/+49
| | | | | | | | | | | | | * 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.
* linux: move a shared part of sys/ptrace.h to bits/ptrace-shared.hDmitry V. Levin2017-12-299-383/+91
| | | | | | | | | | | | | | | | | | | | | 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.
* elf: remove redundant is_path argumentDmitry V. Levin2017-12-271-2/+2
| | | | | | | | | | | 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.
* Deprecate external use of libio.h and _G_config.h.Zack Weinberg2017-12-244-63/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* getrandom: fix comment [BZ #22347]Dmitry V. Levin2017-12-231-2/+2
| | | | | * stdlib/getrandom.c (getrandom): Fix comment. * sysdeps/unix/sysv/linux/getrandom.c (getrandom): Likewise.
* copy_file_range: New function to copy file dataFlorian Weimer2017-12-2229-0/+77
| | | | | The semantics are based on the Linux system call, but a very close emulation in user space is provided.
* Simplify tile assembly definitionsAdhemerval Zanella2017-12-2016-219/+219
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Simplify tilegx sysdeps folderAdhemerval Zanella2017-12-2066-120/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* Remove tilepro-*-linux-gnu supportAdhemerval Zanella2017-12-2049-5103/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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
generated by cgit-pink 1.4.1 (git 2.36.1) at 2024-11-07 12:44:44 +0000