From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id 398963858C2B; Fri, 7 Apr 2023 17:08:01 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 398963858C2B DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1680887281; bh=jYVvQGQzA62wmfrXCNA9HkvEGdU+gGYyCFl/JGI7g90=; h=From:To:Subject:Date:From; b=tcbOtsanCF45CTQ6zdFWdtgfW20WmZ0HKt0/8YKaVmrMX1wE+FuiDM3KbAKGW96BL 6tpMET0AVFsFSN3Sy8WQlE9kvCET65OMNC82EJs+iUpPpwHGnUKc2SkNc7vmfoXdcZ NfAgxglEJ0te3j876NyWyfDJ2pnAgexOpRCc5ekw= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Adhemerval Zanella To: glibc-cvs@sourceware.org Subject: [glibc/azanella/bz12683] arc: Fix Race conditions in pthread cancellation [BZ #12683] X-Act-Checkin: glibc X-Git-Author: Adhemerval Zanella X-Git-Refname: refs/heads/azanella/bz12683 X-Git-Oldrev: fb620d28035829115518e889db77920f7a82d8fd X-Git-Newrev: 30a1035d04844cea141386e74d17050e6b396d53 Message-Id: <20230407170801.398963858C2B@sourceware.org> Date: Fri, 7 Apr 2023 17:08:01 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=30a1035d04844cea141386e74d17050e6b396d53 commit 30a1035d04844cea141386e74d17050e6b396d53 Author: Adhemerval Zanella 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 + . */ + +#include +#include + +/* 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)