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* Use LFS readdir in generic POSIX getcwd [BZ# 22899]Adhemerval Zanella2020-09-022-4/+9
| | | | Checked on x86_64-linux-gnu and i686-linux-gnu.
* linux: Remove __ASSUME_ATFCTSAdhemerval Zanella2020-09-021-4/+0
| | | | | | The __have_atfcts is not used anywhere. Checked on x86_64-linux-gnu.
* Sync getcwd with gnulibAdhemerval Zanella2020-09-022-421/+376
| | | | | | | | | | This is the first of a series of patches to sync with Gnulib commit 615b43e1f9. This patch adopts most of the changes of Gnulib, except it retains GETCWD_RETURN_TYPE and does not always use a 64-bit internal API. These remaining discrepancies will be addressed in later patches in this series. Checked on x86_64-linux-gnu and i686-linux-gnu.
* x86-64: Fix FMA4 detection in ifunc [BZ #26534]Ondřej Hošek2020-09-021-1/+1
| | | | | | A typo in commit 107e6a3c2212ba7a3a4ec7cae8d82d73f7c95d0b causes the FMA4 code path to be taken on systems that support FMA, even if they do not support FMA4. Fix this to detect FMA4.
* y2038: nptl: Convert pthread_cond_{clock|timed}wait to support 64 bit timeLukasz Majewski2020-09-023-1/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pthread_cond_clockwait and pthread_cond_timedwait have been converted to support 64 bit time. This change introduces new futex_abstimed_wait_cancelable64 function in ./sysdeps/nptl/futex-helpers.c, which uses futex_time64 where possible and tries to replace low-level preprocessor macros from lowlevellock-futex.h The pthread_cond_{clock|timed}wait only accepts absolute time. Moreover, there is no need to check for NULL passed as *abstime pointer as __pthread_cond_wait_common() always passes non-NULL struct __timespec64 pointer to futex_abstimed_wait_cancellable64(). For systems with __TIMESIZE != 64 && __WORDSIZE == 32: - Conversions between 64 bit time to 32 bit are necessary - Redirection to __pthread_cond_{clock|timed}wait64 will provide support for 64 bit time The futex_abstimed_wait_cancelable64 function has been put into a separate file on the purpose - to avoid issues apparent on the m68k architecture related to small number of available registers (there is not enough registers to put all necessary arguments in them if the above function would be added to futex-internal.h with __always_inline attribute). In fact - new function - namely __futex_abstimed_wait_cancellable32 is used to reduce number of needed registers (as some in-register values are stored on the stack when function call is made). Build tests: ./src/scripts/build-many-glibcs.py glibcs Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master Above tests were performed with Y2038 redirection applied as well as without to test the proper usage of both __pthread_cond_{clock|timed}wait64 and __pthread_cond_{clock|timed}wait. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* x32: Add <fixup-asm-unistd.h> and regenerate arch-syscall.hH.J. Lu2020-08-312-0/+22
| | | | | | | | | | | | | | | | X32 uses the same 64-bit syscall interface for set_thread_area. But __NR_set_thread_area is missing from <asm/unistd_x32.h>. A kernel patch was submitted: From 7b05d5b43ae2545e0d4a3edb24205d18bc883626 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" <hjl.tools@gmail.com> Date: Sat, 15 Aug 2020 10:34:00 -0700 Subject: [PATCH] x86-64: Enable x32 set_thread_area X32 uses the common 64-bit syscall interface for set_thread_area. Add <fixup-asm-unistd.h> to provide __NR_set_thread_area. Co-authored-by: Florian Weimer <fweimer@redhat.com>
* AArch64: Improve backwards memmove performanceWilco Dijkstra2020-08-281-3/+4
| | | | | | | | On some microarchitectures performance of the backwards memmove improves if the stores use STR with decreasing addresses. So change the memmove loop in memcpy_advsimd.S to use 2x STR rather than STP. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* RISC-V: Build infrastructure for 32-bit portZong Li2020-08-279-10/+69
| | | | | | | | This patch lays out the top-level organisation of the RISC-V 32-bit port. It provides all the Implies files as well as various other fragments of the build infrastructure. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add rv32 path to RTLDLIST in lddZong Li2020-08-271-1/+1
| | | | Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* riscv32: Specify the arch_minimum_kernel as 5.4Alistair Francis2020-08-272-0/+8
| | | | | | | | | | Specify the minimum kernel version for RISC-V 32-bit as the 5.4 kernel. We require this commit: "waitid: Add support for waiting for the current process group" for the kernel as it adds support for the P_PGID id for the waitid syscall. Without this patch we can't replace the wait4 syscall on 64-bit time_t only systems. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Fix llrint and llround missing exceptions on RV32Zong Li2020-08-271-0/+38
| | | | | | | | | Conversions from a float to a long long on 32-bit RISC-V (RV32) may not raise the correct exceptions on overflow, it also may raise spurious "inexact" exceptions on non overflow cases. This patch fixes the problem, similarly to the fix for MIPS, ARM and S390. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add the RV32 libm-test-ulpsAlistair Francis2020-08-272-0/+1406
| | | | | | | | | Add a libm-test-ulps for RV32, this is the same as the RV64 one. This dosn't match what is generated by running `make regen-ulps` on RV32 QEMU, but the current in tree RV64 doesn't match that either. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add 32-bit ABI listsAlistair Francis2020-08-2713-0/+3336
| | | | | | Use the update-abi Make target to generate the abilist for RV32. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add hard float support for 32-bit CPUsZong Li2020-08-274-0/+124
| | | | | | | This patch adds support for hardware floating-point support for the RV32IF and RV32IFD platforms. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Support the 32-bit ABI implementationAlistair Francis2020-08-277-22/+146
| | | | | | | This patch adds the ABI implementation for 32-bit RISC-V. It contains the Linux-specific and RISC-V architecture code. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add arch-syscall.h for RV32Alistair Francis2020-08-271-0/+284
| | | | Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add path of library directories for the 32-bitAlistair Francis2020-08-271-16/+38
| | | | | | | | | | | | | | | | | With RV32 support the list of possible RISC-V system directories increases to: - /lib64/lp64d - /lib64/lp64 - /lib32/ilp32d - /lib32/ilp32 - /lib (only ld.so) This patch changes the add_system_dir () macro to support the new ilp32d and ilp32 directories for RV32. While refactoring this code let's split out the confusing if statements into a loop to make it easier to understand and extend. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Support dynamic loader for the 32-bitZong Li2020-08-271-1/+1
| | | | | | Add the LD_SO_ABI definition for RISC-V 32-bit. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Add support for 32-bit vDSO callsAlistair Francis2020-08-271-6/+17
| | | | Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Use 64-bit-time syscall numbers with the 32-bit portAlistair Francis2020-08-271-0/+23
| | | | | | | | | | | | | | | | | | | sysdep.h redefines only the syscall where the generic implementation still does not have actual 64-bit time_t support: /* Workarounds for generic code needing to handle 64-bit time_t. */ /* Fix sysdeps/unix/sysv/linux/clock_getcpuclockid.c. */ #define __NR_clock_getres __NR_clock_getres_time64 /* Fix sysdeps/nptl/lowlevellock-futex.h. */ #define __NR_futex __NR_futex_time64 [...] This patch also adds a comment that it is a workaround to handle 64-bit time_t and on each #define comment for which implementation it intends to. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Cleanup some of the sysdep.h codeAlistair Francis2020-08-271-13/+4
| | | | | | | | Remove a duplicate inclusion of <sysdeps/unix/sysdep.h> which is already pulled via <sysdeps/unix/sysv/linux/generic/sysdep.h>, and the inclusion of <errno.h> whose definition of `__set_errno' is not needed here. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* RISC-V: Use 64-bit time_t and off_t for RV32 and RV64Alistair Francis2020-08-274-0/+162
| | | | | | | | | | | | | | | | | | | | | | Using the original glibc headers under bits/ let's make small modifications to use 64-bit time_t and off_t for both RV32 and RV64. For the typesizes.h, here are justifications for the changes from the generic version (based on Arnd's very helpful feedback): - All the !__USE_FILE_OFFSET64 types (__off_t, __ino_t, __rlim_t, ...) are changed to match the 64-bit replacements. - __time_t is defined to 64 bit, but no __time64_t is added. This makes sense as we don't have the time64 support for other 32-bit architectures yet, and it will be easy to change when that happens. - __suseconds_t is 64-bit. This matches what we use the kernel ABI for the few drivers that are relying on 'struct timeval' input arguments in ioctl, as well as the adjtimex system call. It means that timeval has to be defined without the padding, unlike timespec, which needs padding. Reviewed-by: Maciej W. Rozycki <macro@wdc.com>
* hurd: define BSD 4.3 ioctls only under __USE_MISCSamuel Thibault2020-08-271-0/+2
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* linux: Simplify utimensatAdhemerval Zanella2020-08-241-13/+10
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_utimensat or __NR_utimensat_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify timerfd_settimeAdhemerval Zanella2020-08-241-14/+9
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_timer_settime or __NR_time_settime_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify timer_gettimeAdhemerval Zanella2020-08-241-12/+8
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_timer_gettime or __NR_time_gettime_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify sched_rr_get_intervalAdhemerval Zanella2020-08-241-12/+8
| | | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_sched_rr_get_interval or __NR_sched_rr_get_interval_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify ppollAdhemerval Zanella2020-08-241-11/+10
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_ppoll or __NR_ppoll_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify mq_timedsendAdhemerval Zanella2020-08-241-7/+7
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_mq_timedsend or __NR_mq_timedsend_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify mq_timedreceiveAdhemerval Zanella2020-08-241-9/+9
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_mq_timedreceive or __NR_mq_timedreceive_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify clock_settimeAdhemerval Zanella2020-08-241-9/+9
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_clock_settime or __NR_clock_settime_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify clock_nanosleepAdhemerval Zanella2020-08-241-22/+11
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_clock_nanosleep or __NR_clock_nanosleep_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Simplify clock_gettimeAdhemerval Zanella2020-08-241-25/+17
| | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_clock_gettime or __NR_clock_gettime_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. It also uses the time64-support functions to simplify it further. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel).
* linux: Simplify clock_adjtimeAdhemerval Zanella2020-08-241-13/+10
| | | | | | | | | | | | With arch-syscall.h it can now assumes the existance of either __NR_clock_adjtime or __NR_clock_adjtime_time64. The 32-bit time_t support is now only build for !__ASSUME_TIME64_SYSCALLS. Checked on x86_64-linux-gnu and i686-linux-gnu (on 5.4 and on 4.15 kernel). Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Lukasz Majewski <lukma@denx.de>
* linux: Add helper function to optimize 64-bit time_t fallback supportAdhemerval Zanella2020-08-243-1/+95
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | These helper functions are used to optimize the 64-bit time_t support on configurations that requires support for 32-bit time_t fallback (!__ASSUME_TIME64_SYSCALLS). The idea is once the kernel advertises that it does not have 64-bit time_t support, glibc will stop to try issue the 64-bit time_t syscall altogether. For instance: #ifndef __NR_symbol_time64 # define __NR_symbol_time64 __NR_symbol #endif int r; if (supports_time64 ()) { r = INLINE_SYSCALL_CALL (symbol, ...); if (r == 0 || errno != ENOSYS) return r; mark_time64_unsupported (); } #ifndef __ASSUME_TIME64_SYSCALLS <32-bit fallback syscall> #endif return r; On configuration with default 64-bit time_t this optimization should be optimized away by the compiler resulting in no overhead.
* S390: Sync HWCAP names with kernel by adding aliases [BZ #25971]Stefan Liebler2020-08-212-0/+6
| | | | | | | Unfortunately some HWCAP names like HWCAP_S390_VX differs between kernel (see <kernel>/arch/s390/include/asm/elf.h) and glibc. Therefore, those HWCAP names from kernel are now introduced as alias
* Update kernel version to 5.8 in tst-mman-consts.py.Joseph Myers2020-08-131-1/+1
| | | | | | | | This patch updates the kernel version in the test tst-mman-consts.py to 5.8. (There are no new MAP_* constants covered by this test in 5.8 that need any other header changes.) Tested with build-many-glibcs.py.
* y2038: nptl: Convert pthread_{clock|timed}join_np to support 64 bit timeLukasz Majewski2020-08-131-0/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pthread_clockjoin_np and pthread_timedjoin_np have been converted to support 64 bit time. This change introduces new futex_timed_wait_cancel64 function in ./sysdeps/nptl/futex-internal.h, which uses futex_time64 where possible and tries to replace low-level preprocessor macros from lowlevellock-futex.h The pthread_{timed|clock}join_np only accept absolute time. Moreover, there is no need to check for NULL passed as *abstime pointer as clockwait_tid() always passes struct __timespec64. For systems with __TIMESIZE != 64 && __WORDSIZE == 32: - Conversions between 64 bit time to 32 bit are necessary - Redirection to __pthread_{clock|timed}join_np64 will provide support for 64 bit time Build tests: ./src/scripts/build-many-glibcs.py glibcs Run-time tests: - Run specific tests on ARM/x86 32bit systems (qemu): https://github.com/lmajewski/meta-y2038 and run tests: https://github.com/lmajewski/y2038-tests/commits/master Above tests were performed with Y2038 redirection applied as well as without to test the proper usage of both __pthread_{timed|clock}join_np64 and __pthread_{timed|clock}join_np. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
* aarch64: update ulps.Szabolcs Nagy2020-08-131-1/+1
| | | | For new j0 test.
* S390: Regenerate ULPs.Stefan Liebler2020-08-121-1/+1
| | | | | | Updates needed after new j0 test: commit 9bfc225078219521439ec8b0f665915e769d40c2 math: Regenerate auto-libm-test-out-j0
* math: Update x86_64 ulpsAdhemerval Zanella2020-08-082-6/+6
| | | | From new j0 test.
* Linux: Use faccessat2 to implement faccessat (bug 18683)Florian Weimer2020-08-072-3/+19
| | | | | | | This provides correct AT_EACCESS handling and also takes Linux security modules into account. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
* math: Fix inaccuracy of j0f for x >= 2^127 when sin(x)+cos(x) is tinyPaul Zimmermann2020-08-071-1/+16
| | | | Checked on x86_64-linux-gnu and i686-linux-gnu.
* Update syscall lists for Linux 5.8.Joseph Myers2020-08-0725-2/+27
| | | | | | | | Linux 5.8 has one new syscall, faccessat2. Update syscall-names.list and regenerate the arch-syscall.h headers with build-many-glibcs.py update-syscalls. Tested with build-many-glibcs.py.
* htl: Enable tst-cancelx?[45]Samuel Thibault2020-08-067-1/+1991
| | | | | | | * nptl/{tst-cancel4-common.c, tst-cancel4-common.h, tst-cancel4.c, tst-cancel5.c, tst-cancelx4.c, tst-cancelx5.c}: Move to sysdeps/pthread/ * nptl/Makefile: Move corresponding rules to... * sysdeps/pthread/Makefile: ... here.
* hurd: Add missing hidden defSamuel Thibault2020-08-061-0/+1
| | | | * sysdeps/mach/hurd/sched_gets.c (__sched_getscheduler): Add hidden def.
* hurd: Rework sbrkSamuel Thibault2020-08-053-9/+32
| | | | | | | | | | | | | | | | | | | | | | | | | Making the brk start exactly at the end of the main application binary was requiring to get it through the _end symbol, which does not work any more with recent toolchains, and actually produces in libc.so a confusing external _end symbol that produces odd results, see https://sourceware.org/bugzilla/show_bug.cgi?id=23499 Trying to do so is quite outdated anyway with the tendency for address randomization. Using _end was also allowing to include the main binary data within the RLIMIT_DATA, but this also seems outdated with dynamic library loading, and nowadays' memory consumption via malloc and mmap rather than statically-allocated data. This adds a BRK_START macro in <vm_param.h> that just tells where we want to start the brk, and thus removes the _end symbol. * sysdeps/mach/hurd/i386/vm_param.h: New file. * sysdeps/mach/hurd/brk.c: Use BRK_START as brk start instead of _end. Also ignore __data_start. * hurd/Versions: Remove _end symbol. * sysdeps/mach/hurd/i386/libc.abilist: Remove _end symbol.
* hurd: Implement basic sched_get/setschedulerSamuel Thibault2020-08-052-0/+75
| | | | | * sysdeps/mach/hurd/sched_gets.c: New file. * sysdeps/mach/hurd/sched_sets.c: New file.
* x86: Rename Intel CPU feature namesH.J. Lu2020-08-052-15/+15
| | | | | | | | | | | | | | | Intel64 and IA-32 Architectures Software Developer’s Manual has changed the following CPU feature names: 1. The CPU feature of Enhanced Intel SpeedStep Technology is renamed from EST to EIST. 2. The CPU feature which supports Platform Quality of Service Monitoring (PQM) capability is changed to Intel Resource Director Technology (Intel RDT) Monitoring capability, i.e. PQM is renamed to RDT_M. 3. The CPU feature which supports Platform Quality of Service Enforcement (PQE) capability is changed to Intel Resource Director Technology (Intel RDT) Allocation capability, i.e. PQE is renamed to RDT_A.
* Regenerate configure scripts.Carlos O'Donell2020-08-042-1/+2
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