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* Fix getlogin_r namespace (bug 18527).Joseph Myers2015-06-122-6/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | Various functions in XPG4 bring in references to getlogin_r, which is not in XPG4; this is also a bug for some older POSIX versions which aren't yet covered by the linknamespace tests. This patch fixes this by making getlogin_r into a weak alias for __getlogin_r and using __getlogin_r as needed. Tested for x86_64 and x86 (testsuite, and that disassembly of installed stripped shared libraries is unchanged by the patch). [BZ #18527] * login/getlogin_r.c (getlogin_r): Rename to __getlogin_r and define as weak alias of __getlogin_r. Use libc_hidden_weak. * sysdeps/mach/hurd/getlogin_r.c (getlogin_r): Likewise. * sysdeps/unix/getlogin_r.c (getlogin_r): Likewise. * sysdeps/unix/sysv/linux/getlogin_r.c (getlogin_r): Likewise. * include/unistd.h (__getlogin_r): Declare. Use libc_hidden_proto. * posix/glob.c (glob): Call __getlogin_r instead of getlogin_r. * conform/Makefile (test-xfail-XPG3/glob.h/linknamespace): Remove variable. (test-xfail-XPG3/wordexp.h/linknamespace): Likewise. (test-xfail-XPG4/glob.h/linknamespace): Likewise. (test-xfail-XPG4/wordexp.h/linknamespace): Likewise.
* Vector sin for x86_64 and tests.Andrew Senkevich2015-06-111-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of vectorized sin containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. * bits/libm-simd-decl-stubs.h: Added stubs for sin. * math/bits/mathcalls.h: Added sin declaration with __MATHCALL_VEC. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New versions added. * sysdeps/x86/fpu/bits/math-vector.h: SIMD declaration for sin. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files. * sysdeps/x86_64/fpu/Versions: New versions added. * sysdeps/x86_64/fpu/libm-test-ulps: Regenerated. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin2_core_sse4.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin4_core_avx2.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_sin8_core_avx512.S: New file. * sysdeps/x86_64/fpu/svml_d_sin2_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin4_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin4_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_d_sin8_core.S: New file. * sysdeps/x86_64/fpu/svml_d_sin_data.S: New file. * sysdeps/x86_64/fpu/svml_d_sin_data.h: New file. * sysdeps/x86_64/fpu/test-double-vlen2-wrappers.c: Added vector sin test. * sysdeps/x86_64/fpu/test-double-vlen2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-avx2.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen4.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8-wrappers.c: Likewise. * sysdeps/x86_64/fpu/test-double-vlen8.c: Likewise. * NEWS: Mention addition of x86_64 vector sin.
* x86: Remove vsyscall usageAdhemerval Zanella2015-06-096-74/+20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the vsyscall usage for x86_64 port. As indicated by kernel code comments [1], vsyscalls are a legacy ABI and its concept is problematic: - It interferes with ASLR. - It's awkward to write code that lives in kernel addresses but is callable by userspace at fixed addresses. - The whole concept is impossible for 32-bit compat userspace. - UML cannot easily virtualize a vsyscall. The VDSO is a better approach for such functionality. Tested on i686, x86_64, and x32. * sysdeps/unix/sysv/linux/i386/gettimeofday.c (__gettimeofday_syscall): Remove vsyscall fallback. * sysdeps/unix/sysv/linux/i386/time.c (__time_syscall): Likewise. * sysdeps/unix/sysv/linux/x86/gettimeofday.c (__gettimeofday_syscall): Add syscall fallback function. (gettimeofday_ifunc): Use __gettimeofday_syscall as fallback mechanism if vDSO is not present. * sysdeps/unix/sysv/linux/x86/time.c (__time_syscall): Add syscall fallback function. (time_ifunc): Use __time_syscall as fallback mechanism if vDSO is not present. * sysdeps/unix/sysv/linux/x86_64/gettimeofday.c: Remove file. * sysdeps/unix/sysv/linux/x86_64/time.c: Likewise. [1] arch/x86/kernel/vsyscall_64.c
* Fix pathconf statvfs namespace (bug 18507).Joseph Myers2015-06-094-8/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | pathconf uses __statvfs64, and fpathconf uses __fstatvfs64. On systems using sysdeps/unix/sysv/linux/wordsize-64, __statvfs64 then brings in the strong symbol statvfs, and __fstatvfs64 brings in the strong symbol fstatvfs, which are not in all the standards that have pathconf and fpathconf. This patch fixes this by making those symbols into weak aliases. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18507] * sysdeps/unix/sysv/linux/fstatvfs.c (fstatvfs): Rename to __fstatvfs and define as weak alias of __fstatvfs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/statvfs.c (statvs): Rename to __statvfs and define as weak alias of __statvfs. Use libc_hidden_weak. * sysdeps/unix/sysv/linux/wordsize-64/fstatvfs.c (__fstatvfs64): Define as alias of __fstatvfs, not fstatvfs. (fstatvfs64): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/statvfs.c (__statvfs64): Define as alias of __statvfs, not statvfs. (statvfs64): Likewise. * conform/Makefile (test-xfail-POSIX/unistd.h/linknamespace): Remove variable.
* Consolidate sched_getcpuAdhemerval Zanella2015-06-0912-203/+10
| | | | | | | | This patch consolidates the sched_getcpu implementations across all arches (except tile, which requires its own). This patch removes the powerpc, x86_64 and x32 specific files and change the default linux one to use INLINE_VSYSCALL where possible (for ports that implements it).
* Vector cosf for x86_64.Andrew Senkevich2015-06-091-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of vectorized cosf containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. * sysdeps/x86_64/fpu/Makefile (libmvec-support): Added new files. * sysdeps/x86_64/fpu/Versions: New versions added. * sysdeps/x86_64/fpu/svml_s_cosf4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf4_core_sse4.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf8_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf8_core_avx2.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf16_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_s_cosf16_core_avx512.S: New file. * sysdeps/x86_64/fpu/svml_s_wrapper_impl.h: New file. * sysdeps/x86_64/fpu/svml_s_cosf_data.S: New file. * sysdeps/x86_64/fpu/svml_s_cosf_data.h: New file. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New versions added. * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cosf. * NEWS: Mention addition of x86_64 vector cosf.
* Start of series of patches with x86_64 vector math functions.Andrew Senkevich2015-06-091-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here is implementation of cos containing SSE, AVX, AVX2 and AVX512 versions according to Vector ABI which had been discussed in <https://groups.google.com/forum/#!topic/x86-64-abi/LmppCfN1rZ4>. Vector math library build and ABI testing enabled by default for x86_64. * sysdeps/x86_64/fpu/Makefile: New file. * sysdeps/x86_64/fpu/Versions: New file. * sysdeps/x86_64/fpu/svml_d_cos_data.S: New file. * sysdeps/x86_64/fpu/svml_d_cos_data.h: New file. * sysdeps/x86_64/fpu/svml_d_cos2_core.S: New file. * sysdeps/x86_64/fpu/svml_d_cos4_core.S: New file. * sysdeps/x86_64/fpu/svml_d_cos4_core_avx.S: New file. * sysdeps/x86_64/fpu/svml_d_cos8_core.S: New file. * sysdeps/x86_64/fpu/svml_d_wrapper_impl.h: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos2_core_sse4.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos4_core_avx2.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core.S: New file. * sysdeps/x86_64/fpu/multiarch/svml_d_cos8_core_avx512.S: New file. * sysdeps/x86_64/fpu/multiarch/Makefile (libmvec-sysdep_routines): Added build of SSE, AVX2 and AVX512 IFUNC versions. * sysdeps/x86/fpu/bits/math-vector.h: Added SIMD declaration for cos. * math/bits/mathcalls.h: Added cos declaration with __MATHCALL_VEC. * sysdeps/x86_64/configure.ac: Options for libmvec build. * sysdeps/x86_64/configure: Regenerated. * sysdeps/x86_64/sysdep.h (cfi_offset_rel_rsp): New macro. * sysdeps/unix/sysv/linux/x86_64/libmvec.abilist: New file. * manual/install.texi (Configuring and compiling): Document --disable-mathvec. * INSTALL: Regenerated. * NEWS: Mention addition of libmvec and x86_64 vector cos.
* nptl: Rewrite cancellation macrosAdhemerval Zanella2015-06-0473-1161/+192
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the way cancellation entrypoints are defined to instead call the macro SYSCALL_CANCEL. An usual cnacellation definition is defined as: if (SINGLE_THREAD_P) return INLINE_SYSCALL (syscall, NARGS, args...) int oldtype = LIBC_CANCEL_ASYNC (); return INLINE_SYSCALL (syscall, NARGS, args...) LIBC_CANCEL_RESET (oldtype); And it is rewrited as just: SYSCALL_CANCEL (syscall, args...) The idea is to remove LIBC_CANCEL_ASYNC/LIBC_CANCEL_RESET explicit usage. Tested on i386, x86_64, powerpc32, powerpc64le, arm, and aarch64. * sysdeps/unix/sysdep.h [SYSCALL_CANCEL]: New macro: define cancellable syscalls. (SYS_ify): Add guard to no redefine it. (INLINE_SYSCALL): Likewise. * sysdeps/unix/sysv/linux/accept4.c (accept4): Remove LIBC_CANCEL_ASYNC/INLINE_SYSCALL/LIBC_CANCEL_RESET and use SYSCALL_CANCEL instead. * sysdeps/unix/sysv/linux/alpha/fdatasync.c (__fdatasync): Likewise. * sysdeps/unix/sysv/linux/arm/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/arm/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/arm/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/epoll_pwait.c (epoll_pwait): Likewise. * sysdeps/unix/sysv/linux/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/fallocate64.c (fallocate64): Likewise. * sysdeps/unix/sysv/linux/generic/open.c (__libc_open): Likewise. * sysdeps/unix/sysv/linux/generic/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/generic/pause.c (__libc_pause): Likewise. * sysdeps/unix/sysv/linux/generic/poll.c (__poll): Likewise. * sysdeps/unix/sysv/linux/generic/recv.c (__libc_recv): Likewise. * sysdeps/unix/sysv/linux/generic/select.c (__select): Likewise. * sysdeps/unix/sysv/linux/generic/send.c (__libc_send): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv.c (__libc_preadv): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/preadv64.c (__libc_readv64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/generic/wordsize-32/pwritev.c (__libc_pwritev): Likewise. * sysdeps/sysv/linux/generic/wordsize-32/pwritev64.c (__libc_pwritev64): Likewise. * sysdeps/unix/sysv/linux/i386/fcntl.c (__libc_fcntl): Likewise. * sysdeps/unix/sysv/linux/mips/mips32/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/mips/mips64/n32/fallocate64.c (fallocate64): Likewise. * sysdeps/unix/sysv/linux/mips/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/mips/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/mips/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/msgrcv.c (__libc_msgrcv): Likewise. * sysdeps/unix/sysv/linux/msgsnd.c (__libc_msgsnd): Likewise. * sysdeps/unix/sysv/linux/open64.c (__libc_open64): Likewise. * sysdeps/unix/sysv/linux/openat.c (__libc_openat): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pread64.c (__libc_read64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite.c (__libc_write): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/pwrite64.c (__libc_write64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/fcntl.c (__libc_fcntl): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/sysv/linux/powerpc/powerpc64/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/ppoll.c (ppoll): Likewise. * sysdeps/unix/sysv/linux/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/preadv.c (__libc_preadv): Likewise. * sysdeps/unix/sysv/linux/pselect.c (__pselect): Likewise. * sysdeps/unix/sysv/linux/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/pwritev.c (PWRITEV): Likewise. * sysdeps/unix/sysv/linux/readv.c (__libc_readv): Likewise. * sysdeps/unix/sysv/linux/recvmmsg.c (recvmmsg): Likewise. * sysdeps/unix/sysv/linux/sendmmsg.c (sendmmsg): Likewise. * sysdeps/unix/sysv/linux/sh/pread.c (__libc_pread): Likewise. * sysdeps/unix/sysv/linux/sh/pread64.c (__libc_pread64): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite.c (__libc_pwrite): Likewise. * sysdeps/unix/sysv/linux/sh/pwrite64.c (__libc_pwrite64): Likewise. * sysdeps/unix/sysv/linux/sigsuspend.c (__sigsuspend): Likewise. * sysdeps/unix/sysv/linux/sigtimedwait.c (__sigtimedwait): Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c (__sigwaitinfo): Likewise. * sysdeps/unix/sysv/linux/sparc/sparc64/msgrcv.c (__libc_msgrcv): Likewise. * sysdeps/unix/sysv/linux/sync_file_range.c (sync_file_range): Likewise. * sysdeps/unix/sysv/linux/tcdrain.c (__libc_tcdrain): Likewise. * sysdeps/unix/sysv/linux/timer_routines.c (timer_helper_thread): Likewise. * sysdeps/unix/sysv/linux/wait.c (__libc_wait): Likewise. * sysdeps/unix/sysv/linux/waitid.c (__waitid): Likewise. * sysdeps/unix/sysv/linux/waitpid.c (__libc_waitpid): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/fallocate.c (fallocate): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/preadv.c (preadv): Likewise. * sysdeps/unix/sysv/linux/wordsize-64/pwritev.c (pwritev): Likewise. * sysdeps/unix/sysv/linux/writev.c (__libc_writev): Likewise. * sysdeps/unix/sysv/linux/x86_64/recv.c (__libc_recv): Likewise. * sysdeps/unix/sysv/linux/x86_64/send.c (__libc_send): Likewise.
* ARM: VDSO supportNathan Lynch2015-06-045-0/+84
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Beginning with the upcoming 4.1 release, Linux on a subset of 32-bit ARM hardware will provide fast user-space implementations of the following system calls: - gettimeofday - clock_gettime The kernel implementation depends on the ARMv7 Generic Timers Extension to accelerate these system calls. So CPUs such as Cortex-A15 and -A7 benefit, while Cortex-A9, -A8, and pre-v7 CPUs do not. On systems where the VDSO does not provide any speedup, the kernel prevents the relevant symbol lookups from succeeding. On OMAP5 (Cortex-A15) gettimeofday latency decreases from ~350ns to ~120ns. On BeagleBone Black (Cortex-A8) it goes from ~650ns to ~660ns, which to my mind is an acceptable cost. Verified that no new test failures are introduced on kernels with and without the VDSO. * sysdeps/unix/sysv/linux/arm/Makefile: (sysdep_routines): Include dl-vdso. * sysdeps/unix/sysv/linux/arm/init-first.c: New file: Use VDSO routines for gettimeofday, clock_gettime if available. * sysdeps/unix/sysv/linux/arm/libc-vdso.h: New file: Declare VDSO symbols. * sysdeps/unix/sysv/linux/arm/sysdep.h: [HAVE_GETTIMEOFDAY_VSYSCALL]: Define. [HAVE_CLOCK_GETTIME_VSYSCALL]: Define. * sysdeps/unix/sysv/linux/arm/Versions: Add __vdso_clock_gettime.
* Use inline syscalls for non-cancellable versionsAdhemerval Zanella2015-06-042-34/+44
| | | | | | This patch uses inline calls (through INLINE_SYSCALL macro) to define the non-cancellable functions macros to avoid use of the syscall_nocancel entrypoint.
* Use better variable names in MIPS syscall macros.Joseph Myers2015-06-023-16/+16
| | | | | | | | | | | | | | | | | | | | | | | | Carlos noted in <https://sourceware.org/ml/libc-alpha/2015-05/msg00680.html> that various ports use potentially problematic short variables names in their syscall macros, which could shadow variables with the same name from containing scopes. This patch fixes variables called err and ret in MIPS macros. (I left result_var and _sys_result - separate variables in different macros, which need separate names - alone.) Tested for mips64 (all three ABIs) that installed stripped shared libraries are unchanged by this patch. * sysdeps/unix/sysv/linux/mips/mips32/sysdep.h (INLINE_SYSCALL): Use variable name _sc_err instead of err. [__mips16] (INTERNAL_SYSCALL_NCS): Use variable name _sc_ret instead of ret. * sysdeps/unix/sysv/linux/mips/mips64/n32/sysdep.h (INLINE_SYSCALL): Use variable name _sc_err instead of err. * sysdeps/unix/sysv/linux/mips/mips64/n64/sysdep.h (INLINE_SYSCALL): Likewise.
* x86: clock_gettime and timespec_get vDSO cleanupAdhemerval Zanella2015-06-015-63/+9
| | | | | This patch removes the x86 specific timespec_get and clock_gettime implementation to use generic HAVE_CLOCK_GETTIME_VSYSCALL way.
* powerpc: setcontext.S uses power6 mtfsf when not supported [BZ #18116]Martin Sebor2015-06-012-14/+52
| | | | | | | | | | | | | The attached patch fixes a glibc build failure with gcc 5 on powerpc64le caused by a recent change in gcc where the compiler defines the _ARCH_PWR6 macro when processing assembly files but doesn't invoke the assembler in the corresponding machine mode (unless it has been explicitly configured to target POWER 6 or later). A bug had been filed with gcc for this (65341) but was closed as won't fix. Glibc relies on the _ARCH_PWR6 macro in a few .S files to make use of Power ISA 2.5 instructions (specifically, the four-argument form of the mtfsf insn). A similar problem had occurred in the past (bug 10118) but the fix that was committed for it didn't anticipate this new problem.
* tile: use better variable naming in INLINE_SYSCALLChris Metcalf2015-05-261-14/+15
| | | | | | | | | | | | | | | At issue for INLINE_SYSCALL was that it used "err" and "val" as variable names in a #define, so that if it was used in a context where the "caller" was also using "err" or "val", and those variables were passed in to INLINE_SYSCALL, we would end up referencing the internal shadowed variables instead. For example, "char val" in check_may_shrink_heap() in sysdeps/unix/sysv/linux/malloc-sysdep.h was being shadowed by the syscall return "val" in INLINE_SYSCALL, causing the "char val" not to get updated at all, and may_shrink_heap ended up always false. A similar fix was made to INTERNAL_VSYSCALL_CALL.
* Split timed-wait functions out of nptl/lowlevellock.c.Roland McGrath2015-05-268-0/+8
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* Consolidate gettimeofday across aarch64/s390/tileAdhemerval Zanella2015-05-2610-88/+9
| | | | | | | | This patch removes the architecture specific gettimeofday implementation to use the vDSO symbol and consolidate it on a common Linux one. Similar to clock_gettime and clock_getres vDSO implementation, each port that supports gettimeofday through vDSO should just implement INLINE_VSYSCALL to access the symbol and define HAVE_{GETTIME,GETRES}_VSYSCAL as 1.
* struct stat is not posix conformSzabolcs Nagy2015-05-263-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 21/05/15 05:29, Siddhesh Poyarekar wrote: > On Wed, May 20, 2015 at 06:55:02PM +0100, Szabolcs Nagy wrote: >> i guess it's ok for consistency if i fix struct stat64 >> too to use __USE_XOPEN2K8. >> >> i will run some tests and come back with a patch > > I also think it would be appropriate to change this code in other > architectures (microblaze and nacl IIRC) to make all of them > consistent. It is a mechanical enough change IMO that all arch > maintainer acks is not necessary. > here is the patch with consistent __USE_XOPEN2K8 ok to commit? 2015-05-21 Szabolcs Nagy <szabolcs.nagy@arm.com> [BZ #18234] * conform/data/sys/stat.h-data (struct stat): Add tests for st_atim, st_mtim and st_ctim members. * sysdeps/nacl/bits/stat.h (struct stat, struct stat64): Make st_atim, st_ctim, st_mtim visible under __USE_XOPEN2K8 only. * sysdeps/unix/sysv/linux/generic/bits/stat.h (struct stat,): (struct stat64): Likewise. * sysdeps/unix/sysv/linux/ia64/bits/stat.h (struct stat,): (struct stat64): Likewise. * sysdeps/unix/sysv/linux/microblaze/bits/stat.h (struct stat,): (struct stat64): Likewise.
* Consolidate vDSO macros and usageAdhemerval Zanella2015-05-2626-552/+288
| | | | | | | | | | | | | | | | This patch consolidate the Linux vDSO define and usage across all ports that uses it. The common vDSO definitions and calling through {INLINE/INTERNAL}_VSYSCALL macros are moved to a common header sysdep-vdso.h and vDSO name declaration and prototype is defined using a common macro. Also PTR_{MANGLE,DEMANGLE} is added to ports that does not use them for vDSO calls (aarch64, powerpc, s390, and tile) and thus it will reflect in code changes. For ports that already implement pointer mangling/demangling in vDSO system (i386, x32, x86_64) this patch is mainly a code refactor. Checked on x32, x86_64, x32, ppc64le, and aarch64.
* Remove socket.S implementationAdhemerval Zanella2015-05-2261-1718/+609
| | | | | | | | | | | | | | | This patch removes the socket.S implementation for all ports and replace it by a C implementation using socketcall. For ports that implement the syscall directly, there is no change. The patch idea is to simplify the socket function implementation that uses the socketcall to be based on C implemetation instead of a pseudo assembly implementation with arch specific parts. The patch then remove the assembly implementatation for the ports which uses socketcall (i386, microblaze, mips, powerpc, sparc, m68k, s390 and sh). I have cross-build GLIBC for afore-mentioned ports and tested on both i386 and ppc32 without regressions.
* Fix pathconf basename namespace (bug 18444).Joseph Myers2015-05-221-1/+1
| | | | | | | | | | | | | | | | | | | | | pathconf (sysdeps/unix/sysv/linux/pathconf.c) uses basename. But pathconf is in POSIX back to 1990 while basename is only reserved with external linkage in those standards including XPG functions. This patch fixes this namespace issue in the usual way, renaming basename to __basename and making it into a weak alias. Tested for x86_64 and x86 (testsuite, and that disassembly of installed shared libraries is unchanged by the patch). [BZ #18444] * string/basename.c (basename): Rename to __basename and define as weak alias of __basename. Use libc_hidden_weak. * include/string.h (__basename): Declare. Use libc_hidden_proto. * sysdeps/unix/sysv/linux/pathconf.c (distinguish_extX): Call __basename instead of basename. * conform/Makefile (test-xfail-POSIX2008/unistd.h/linknamespace): Remove variable. (test-xfail-XOPEN2K8/unistd.h/linknamespace): Likewise.
* NaCl: Set tid field to a unique value.Roland McGrath2015-05-201-0/+30
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* Move usleep.c using nanosleep to sysdeps/posix.Roland McGrath2015-05-201-33/+0
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* i386: Remove six-argument specialized implementationsAdhemerval Zanella2015-05-205-197/+2
| | | | | | This patch removes the specialized i386 assembly implementations for fallocate{64}, pselect, and sync_file_range now that i386 have support for 6 argument syscalls.
* Fix non-portable echo usage in sysdeps/unix/make-syscalls.shAdhemerval Zanella2015-05-141-9/+14
| | | | | This patch changes the way make-syscall-sh script uses echo to follow POSIX spec.
* Refactor scandir/scandirat to use common tail.Roland McGrath2015-05-131-8/+7
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* Break __scandir_cancel_handler out into its own file.Roland McGrath2015-05-131-1/+0
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* Remove a trailing `\' in make-syscalls.shH.J. Lu2015-05-131-1/+1
| | | | | [BZ #18409] * sysdeps/unix/make-syscalls.sh: Remove a trailing `\'.
* Bug 18125: Call exit after last linked context.Carlos O'Donell2015-05-084-6/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There appears to be a discrepancy among the implementations of setcontext with regards to the function called once the last linked-to context has finished executing via setcontext. The POSIX standard says: ~~~ If the uc_link member of the ucontext_t structure pointed to by the ucp argument is equal to 0, then this context is the main context, and the thread will exit when this context returns. ~~~ It says "exit" not "exit immediately" nor "exit without running functions registered with atexit or on_exit." Therefore the AArch64, ARM, hppa and NIOS II implementations are wrong and no test detects it. It is questionable if this should even be fixed or just documented that the above 4 targets are wrong. The functions are deprecated and nobody should be using them, but at the same time it silly to have cross-target differences that make it hard to port old applications from say x86_64 to AArch64. Therefore I will ix the 4 arches, and checkin a regression test to prevent it from changing again. https://sourceware.org/ml/libc-alpha/2015-03/msg00720.html
* __ASSUME_FALLOCATE is always true on 32-bit architecturesFlorian Weimer2015-05-055-114/+34
| | | | | This means we can clean up the generic code a bit. The 64-bit variant still needs to support !__ASSUME_FALLOCATE for alpha.
* i386: Remove fallocate, fallocate64, posix_fallocate, posix_fallocate64Florian Weimer2015-05-056-232/+3
| | | | | With 6-argument system call support, the generic Linux implementations of these system calls work, and there is no need for i386-specific versions.
* Remove MIPS version of waitid.c.Joseph Myers2015-04-301-7/+0
| | | | | | | | | Since glibc is no longer built with -Winline, a special MIPS version of waitid.c to disable -Winline is no longer needed, and this patch removes it. Tested that glibc does indeed build with the patch applied. * sysdeps/unix/sysv/linux/mips/mips32/waitid.c: Remove file.
* Update sparc localplt.dataDavid S. Miller2015-04-272-8/+6
| | | | | | * sysdeps/unix/sysv/linux/sparc/sparc32/localplt.data: Remove __tls_get_addr. * sysdeps/unix/sysv/linux/sparc/sparc64/localplt.data: Likewise.
* S/390: Get cache information via sysconfStefan Liebler2015-04-241-0/+230
| | | | | | | | | | | This patch adds support to query cache information on s390 via sysconf() function - e.g. with _SC_LEVEL1_ICACHE_SIZE. The attributes size, linesize and assoc can be queried for cache level 1 - 4 via "extract cpu attribute" instruction, which was first available with z10. * NEWS: Mention sysconf() cache information support for s390. * sysdeps/unix/sysv/linux/s390/sysconf.c: New File.
* libc-vdso.h place consolidationAdhemerval Zanella2015-04-2018-14/+14
| | | | | | This patch moves the libc-vdso.h internal header from bits folder to default architecture one and also corrects the remaning includes in the files.
* Convert sparc over to lowlevellock-futex.hDavid S. Miller2015-04-161-146/+1
| | | | | * sysdeps/unix/sysv/linux/sparc/lowlevellock.h: Make use of lowlevellock-futex.h
* [BZ #17930] MIPS: Define SHM_NORESERVE.James Cowgill2015-04-071-0/+1
| | | | | [BZ #17930] * sysdeps/unix/sysv/linux/mips/bits/shm.h (SHM_NORESERVE): Define.
* alpha: Unconditionally include dl-sysdep.h in sysdep.hRichard Henderson2015-04-061-5/+1
| | | | Fixes a -Wundef error wrt RTLD_PRIVATE_ERRNO.
* aarch64: Increase MINSIGSTKSZ and SIGSTKSZ (bug 16850)Andreas Schwab2015-04-021-0/+54
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* Remove unused macros from i386 lowlevellock.h.Joseph Myers2015-03-251-18/+0
| | | | | | | | | | | | | | In the course of the work on six-argument syscalls I noticed that the i386 lowlevellock.h contained some unused macro definitions (already unused before my patch). This patch removes them. Tested for x86 that installed stripped shared libraries are unchanged by this patch. * sysdeps/unix/sysv/linux/i386/lowlevellock.h (LLL_EBX_LOAD): Remove macro. (LLL_EBX_REG): Likewise. (LLL_ENTER_KERNEL): Likewise.
* Support six-argument syscalls from C for 32-bit x86, use generic ↵Joseph Myers2015-03-255-153/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lowlevellock-futex.h (bug 18138). This patch follows the approach outlined in <https://sourceware.org/ml/libc-alpha/2015-03/msg00656.html> to support six-argument syscalls from INTERNAL_SYSCALL for 32-bit x86, making them call a function __libc_do_syscall that takes the syscall number and three syscall arguments in the registers in which the kernel expects them, along with a pointer to a structure containing the other three arguments. In turn, this allows the generic lowlevellock-futex.h to be used on 32-bit x86, so supporting lll_futex_timed_wait_bitset (and so allowing FUTEX_CLOCK_REALTIME to be used in various cases, so fixing bug 18138 for 32-bit x86 and leaving hppa as the only architecture missing lll_futex_timed_wait_bitset). The change to lowlevellock.h's definition of SYS_futex is because the generic lowlevelloc-futex.h ends up bringing in bits/syscall.h which defines SYS_futex to __NR_futex, so resulting in redefinition errors. The revised definition in lowlevellock.h is in line with what the x86_64 version does. __libc_do_syscall is only needed in libpthread at present (meaning nothing special needs to be done to make it shared-only in most libraries containing it, static in libc only, as on ARM). Tested for 32-bit x86, with the glibc testsuite and with the test in bug 18138. The failures seen FAIL: nptl/tst-cleanupx4 FAIL: rt/tst-cpuclock2 are pre-existing. [BZ #18138] * sysdeps/unix/sysv/linux/i386/sysdep.h (struct libc_do_syscall_args): New structure. (INTERNAL_SYSCALL_MAIN_0): New macro. (INTERNAL_SYSCALL_MAIN_1): Likewise. (INTERNAL_SYSCALL_MAIN_2): Likewise. (INTERNAL_SYSCALL_MAIN_3): Likewise. (INTERNAL_SYSCALL_MAIN_4): Likewise. (INTERNAL_SYSCALL_MAIN_5): Likewise. (INTERNAL_SYSCALL_MAIN_6): Likewise. Call __libc_do_syscall. (INTERNAL_SYSCALL): Define to use INTERNAL_SYSCALL_MAIN_##nr. Replace conditional definitions by conditional definitions of .... (INTERNAL_SYSCALL_MAIN_INLINE): ... this. New macro. * sysdeps/unix/sysv/linux/i386/libc-do-syscall.S: New file. * sysdeps/unix/sysv/linux/i386/Makefile [$(subdir) = nptl] (libpthread-sysdep_routines): Add libc-do-syscall. * sysdeps/unix/sysv/linux/i386/lowlevellock-futex.h: Remove file. * sysdeps/unix/sysv/linux/i386/lowlevellock.h (SYS_futex): Define to __NR_futex not 240.
* powerpc __tls_get_addr call optimizationAlan Modra2015-03-254-0/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is glibc support for a PowerPC TLS optimization, inspired by Alexandre Oliva's TLS optimization for other processors, http://www.lsd.ic.unicamp.br/~oliva/writeups/TLS/RFC-TLSDESC-x86.txt In essence, this optimization uses a zero module id in the tls_index GOT entry to indicate that a TLS variable is allocated space in the static TLS area. A special plt call linker stub for __tls_get_addr checks for such a tls_index and if found, returns the offset immediately. The linker communicates the fact that the special __tls_get_addr stub is used by setting a bit in the dynamic tag DT_PPC64_OPT/DT_PPC_OPT. glibc communicates to the linker that this optimization is available by the presence of __tls_get_addr_opt. tst-tlsmod2.so is built with -Wl,--no-tls-get-addr-optimize for tst-tls-dlinfo, which otherwise would fail since it tests that no static tls is allocated. The ld option --no-tls-get-addr-optimize has been available since binutils-2.20 so doesn't need a configure test. * NEWS: Advertise TLS optimization. * elf/elf.h (R_PPC_TLSGD, R_PPC_TLSLD, DT_PPC_OPT, PPC_OPT_TLS): Define. (DT_PPC_NUM): Increment. * elf/dynamic-link.h (HAVE_STATIC_TLS): Define. (CHECK_STATIC_TLS): Use here. * sysdeps/powerpc/powerpc32/dl-machine.h (elf_machine_rela): Optimize TLS descriptors. * sysdeps/powerpc/powerpc64/dl-machine.h (elf_machine_rela): Likewise. * sysdeps/powerpc/dl-tls.c: New file. * sysdeps/powerpc/Versions: Add __tls_get_addr_opt. * sysdeps/powerpc/tst-tlsopt-powerpc.c: New tls test. * sysdeps/unix/sysv/linux/powerpc/Makefile: Add new test. Build tst-tlsmod2.so with --no-tls-get-addr-optimize. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ld.abilist: Update. * sysdeps/unix/sysv/linux/powerpc/powerpc64/ld.abilist: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc64/ld-le.abilist: Likewise.
* pthread_setaffinity (Linux variant): Rewrite to use VLA instead of allocaFlorian Weimer2015-03-231-15/+18
| | | | | | | extend_alloca was used to emulate VLA deallocation. The new version also handles the res == 0 corner case more explicitly, by returning 0 instead of the (potentially undefined, but usually zero) system call error.
* Remove HAVE_ASM_PPC_REL16 referencesAlan Modra2015-03-231-5/+0
| | | | | | | | | | | | | In bc0cdc498 the configure check for HAVE_ASM_PPC_REL16 was removed on the grounds that the minimum binutils supports rel16 relocs. This is true, but not all references to HAVE_ASM_PPC_REL16 in the sources were removed. * config.h.in: Remove HAVE_ASM_PPC_REL16. * sysdeps/powerpc/powerpc32/tls-macros.h: Remove HAVE_ASM_PPC_REL16 and false branch of conditional. * sysdeps/unix/sysv/linux/powerpc/powerpc32/swapcontext-common.S: Likewise.
* linux-generic: add a READMEChris Metcalf2015-03-191-0/+11
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* S/390: Fix setcontext/swapcontext which are not restoring sigmask.Stefan Liebler2015-03-124-24/+12
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* powerpc: Remove HAVE_ASM_GLOBAL_DOT_NAME defineAdhemerval Zanella2015-03-111-5/+1
| | | | | | | | | With AIX port deprecated there is no need to check/define HAVE_ASM_GLOBAL_DOT_NAME anymore since the current minimum binutils supported (2.22) does not emit global symbol with dot. This patch removes all the HAVE_ASM_GLOBAL_DOT_NAME definition and checks for powerpc64 port.
* Correct __ASSUME_PRLIMIT64 for hppa/microblaze/sh (bug 17779).Joseph Myers2015-03-023-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | __ASSUME_PRLIMIT64 is defined in kernel-features.h for kernels 2.6.36 and later, but hppa, microblaze and sh did not add the prlimit64 syscall until 2.6.37. This patch adds corresponding undefines of __ASSUME_PRLIMIT64 to those architectures' kernel-features.h files. (This concludes the kernel-features.h fixes arising out of the review - limited to macros defined in the architecture-independent kernel-features.h file - I did in connection with the move to 2.6.32 minimum kernel version. For that subset of macros - I didn't check any purely architecture-specific macros - I think they are now defined for the correct kernel versions on each architecture after this patch.) [BZ #17779] * sysdeps/unix/sysv/linux/hppa/kernel-features.h [__LINUX_KERNEL_VERSION < 0x020625] (__ASSUME_PRLIMIT64): Undefine. * sysdeps/unix/sysv/linux/microblaze/kernel-features.h [__LINUX_KERNEL_VERSION < 0x020625] (__ASSUME_PRLIMIT64): Likewise. * sysdeps/unix/sysv/linux/sh/kernel-features.h [__LINUX_KERNEL_VERSION < 0x020625] (__ASSUME_PRLIMIT64): Likewise.
* hppa: fix __O_SYNC to match the kernelJohn David Anglin2015-02-271-1/+1
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* in.h: Coordinate in6_pktinfo and ip6_mtuinfo for kernel and glibc [BZ #15850]Cong Wang2015-02-251-4/+4
| | | | | | | | Similarly to what we did for in6_addr, we need a macro to guard in6_pktinfo and ip6_mtuinfo too. Cc: Carlos O'Donell <carlos@redhat.com> Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
* Update timex.h for ADJ_SETOFFSET.Miroslav Lichvar2015-02-241-2/+3
| | | | | ADJ_SETOFFSET is a new adjtimex() mode that can be used to precisely step the clock. It was introduced in kernel 2.6.39.
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