From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1791) id 6B5C33858C78; Tue, 11 Apr 2023 14:20:07 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 6B5C33858C78 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1681222807; bh=6nCCxUnZsb2PfhcUJOtrbHv4M1fleSlxzmay/uOjwgc=; h=From:To:Subject:Date:From; b=f7W5nfGwXdTrX2tGF5IjB96IYE7y+wxUgAsT07/j8I2+LmTIOjdej9WBf/RyMAiD8 v05csHG1r4oo1VOZzPiu0FQZdF+F0D3gjvupk9hF2xWH4+IfcGEyp9CZ1QpHGGvEgI 5nlAfHgLyIyZvi9cILsYDyCoor21+b5Tw556T8EE= 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] loongarch: 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: c02d6d2976c4ab41d60f191fa9ab7e9a25be0788 X-Git-Newrev: 45586e1434105342790a502f0206cdd0c24dc1aa Message-Id: <20230411142007.6B5C33858C78@sourceware.org> Date: Tue, 11 Apr 2023 14:20:07 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=45586e1434105342790a502f0206cdd0c24dc1aa commit 45586e1434105342790a502f0206cdd0c24dc1aa Author: Adhemerval Zanella Date: Mon Apr 3 15:50:35 2023 -0300 loongarch: 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 loongarch64-linux-gnu-lp64d. Diff: --- sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S b/sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S new file mode 100644 index 0000000000..edea9632ff --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S @@ -0,0 +1,50 @@ +/* Cancellable syscall wrapper. Linux/loongarch 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 + +ENTRY (__syscall_cancel_arch) + + .global __syscall_cancel_arch_start +__syscall_cancel_arch_start: + + /* if (*cancelhandling & CANCELED_BITMASK) + __syscall_do_cancel() */ + ld.w t0, a0, 0 + andi t0, t0, TCB_CANCELED_BITMASK + bnez t0, 1f + + /* Issue a 6 argument syscall. */ + move t1, a1 + move a0, a2 + move a1, a3 + move a2, a4 + move a3, a5 + move a4, a6 + move a5, a7 + move a7, t1 + syscall 0 + + .global __syscall_cancel_arch_end +__syscall_cancel_arch_end: + jr ra +1: + b __syscall_do_cancel + +END (__syscall_cancel_arch)