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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/azanella/bz12683] arc: Fix Race conditions in pthread cancellation [BZ #12683] Date: Fri, 7 Apr 2023 17:08:01 +0000 (GMT) [thread overview] Message-ID: <20230407170801.398963858C2B@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=30a1035d04844cea141386e74d17050e6b396d53 commit 30a1035d04844cea141386e74d17050e6b396d53 Author: Adhemerval Zanella <adhemerval.zanella@linaro.org> Date: Mon Apr 3 11:20:49 2023 -0300 arc: Fix Race conditions in pthread cancellation [BZ #12683] By adding the required syscall_cancel.S. Checked against a build and make check run-built-tests=no for arc-linux-gnu, arc-linux-gnuhf, and arceb-linux-gnu. Diff: --- sysdeps/unix/sysv/linux/arc/syscall_cancel.S | 56 ++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) diff --git a/sysdeps/unix/sysv/linux/arc/syscall_cancel.S b/sysdeps/unix/sysv/linux/arc/syscall_cancel.S new file mode 100644 index 0000000000..fa02af4163 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/syscall_cancel.S @@ -0,0 +1,56 @@ +/* Cancellable syscall wrapper. Linux/ARC version. + Copyright (C) 2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#include <sysdep.h> +#include <descr-const.h> + +/* long int __syscall_cancel_arch (int *cancelhandling, + __syscall_arg_t nr, + __syscall_arg_t arg1, + __syscall_arg_t arg2, + __syscall_arg_t arg3, + __syscall_arg_t arg4, + __syscall_arg_t arg5, + __syscall_arg_t arg6) */ + +ENTRY (__syscall_cancel_arch) + + .globl __syscall_cancel_arch_start +__syscall_cancel_arch_start: + ld_s r12,[r0] + bbit1 r12, TCB_CANCELED_BITMASK, 1f + mov_s r8, r1 + mov_s r0, r2 + mov_s r1, r3 + mov_s r2, r4 + mov_s r3, r5 + mov_s r4, r6 + mov_s r5, r7 + trap_s 0 + + .globl __syscall_cancel_arch_end +__syscall_cancel_arch_end: + j_s [blink] + + .align 4 +1: push_s blink + cfi_def_cfa_offset (4) + cfi_offset (31, -4) + bl @__syscall_do_cancel + +END (__syscall_cancel_arch)
next reply other threads:[~2023-04-07 17:08 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-07 17:08 Adhemerval Zanella [this message] 2023-04-11 14:19 Adhemerval Zanella
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