From patchwork Mon Oct 14 20:56:48 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adhemerval Zanella Netto X-Patchwork-Id: 34965 Received: (qmail 116177 invoked by alias); 14 Oct 2019 20:57:32 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Delivered-To: mailing list libc-alpha@sourceware.org Received: (qmail 115445 invoked by uid 89); 14 Oct 2019 20:57:27 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-21.3 required=5.0 tests=AWL, BAYES_00, GIT_PATCH_0, GIT_PATCH_1, GIT_PATCH_2, GIT_PATCH_3, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_PASS autolearn=ham version=3.3.1 spammy=HX-Received:74b X-HELO: mail-qk1-f181.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references; bh=VbF2lTSkRZUsCBxbqkjFrl2/tacZhv5Fk1UMoJNzKVo=; b=wIf8tnGGNFkNkZSNbjaSj73ux+S6q3ymk+W+y1DClM5fiQ1mPPkNccC6YYWnzCnjNj tirXHWAsaB3Z9NKeAKtsTHQyu4RhODiyC3YsypVbED8/DvJdLNvBp/IlqK4Sw13mUdvT BZqutT/fosJcK2FJaNuCf7iTDQ7UOj/Ay3g9vycN2SsPY8horauUebP/Yq1DGRTE01ca uSby09F+ENw8LRtZpqUbatgyCxpzxO+8W9BW22vwblxAr2RoWO72/AbDDxOe8MEzL28Q O7qTf5SfxdX4D2lzKvvqYFTIGkDzqbNs0gHE/2/0meQ2psIkQGoyRuS4CUEMdETzdxpJ esqw== Return-Path: From: Adhemerval Zanella To: libc-alpha@sourceware.org Subject: [PATCH v3 13/21] nptl: hppa: Fix Race conditions in pthread cancellation (BZ#12683) Date: Mon, 14 Oct 2019 17:56:48 -0300 Message-Id: <20191014205656.29834-14-adhemerval.zanella@linaro.org> In-Reply-To: <20191014205656.29834-1-adhemerval.zanella@linaro.org> References: <20191014205656.29834-1-adhemerval.zanella@linaro.org> This patch adds the hppa modifications required for the BZ#12683 fix by adding the arch-specific cancellation syscall bridge. Checked on hppa-linux-gnu. --- sysdeps/unix/sysv/linux/hppa/syscall_cancel.S | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 sysdeps/unix/sysv/linux/hppa/syscall_cancel.S diff --git a/sysdeps/unix/sysv/linux/hppa/syscall_cancel.S b/sysdeps/unix/sysv/linux/hppa/syscall_cancel.S new file mode 100644 index 0000000000..14e1f5f0a7 --- /dev/null +++ b/sysdeps/unix/sysv/linux/hppa/syscall_cancel.S @@ -0,0 +1,82 @@ +/* Cancellable syscall wrapper. Linux/hppa version. + Copyright (C) 2019 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 + +/* long int __syscall_cancel_arch (int *cancelhandling, + long int nr, + long int arg1, + long int arg2, + long int arg3, + long int arg4, + long int arg5, + long int arg6) */ + + .text +ENTRY(__syscall_cancel_arch) + stw %r2,-20(%r30) + ldo 128(%r30),%r30 + cfi_def_cfa_offset (-128) + cfi_offset (2, -20) + ldw -180(%r30),%r28 + copy %r24,%r31 + stw %r28,-104(%r30) + ldw -184(%r30),%r28 + stw %r28,-108(%r30) + ldw -188(%r30),%r28 + stw %r28,-112(%r30) + ldw -192(%r30),%r28 + stw %r4,-100(%r30) + stw %r28,-116(%r30) + copy %r25,%r28 + copy %r23,%r25 + stw %r19,-32(%r30) + cfi_offset (4, 28) + + .global __syscall_cancel_arch_start + .type __syscall_cancel_arch_start,@function +__syscall_cancel_arch_start: + + ldw 0(%r26),%r20 + stw %r20,-120(%r30) + ldw -120(%r30),%r20 + bb,< %r20,29,1f + ldw -116(%r30),%r21 + ldw -112(%r30),%r22 + copy %r31,%r26 + ldw -108(%r30),%r23 + ldw -104(%r30),%r24 + copy %r19, %r4 + ble 0x100(%sr2, %r0) + + .global __syscall_cancel_arch_end + .type __syscall_cancel_arch_end,@function +__syscall_cancel_arch_end: + + copy %r28, %r20 + copy %r4, %r19 + ldw -148(%r30),%r2 + ldw -100(%r30),%r4 + bv %r0(%r2) + ldo -128(%r30),%r30 +1: + bl __syscall_do_cancel,%r2 + nop + nop +END(__syscall_cancel_arch) +libc_hidden_def (__syscall_cancel_arch)