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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc/azanella/bz12683] hppa: Fix Race conditions in pthread cancellation [BZ#12683] Date: Tue, 11 Apr 2023 14:19:36 +0000 (GMT) [thread overview] Message-ID: <20230411141936.EF9FE3858D20@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=44b1af8914227de6047ee2c04eaed2cc925789a2 commit 44b1af8914227de6047ee2c04eaed2cc925789a2 Author: Adhemerval Zanella <adhemerval.zanella@linaro.org> Date: Mon Apr 3 11:26:28 2023 -0300 hppa: Fix Race conditions in pthread cancellation [BZ#12683] By adding the required syscall_cancel.S. Checked on hppa-linux-gnu. Diff: --- sysdeps/unix/sysv/linux/hppa/syscall_cancel.S | 81 +++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) 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..b9c19747ea --- /dev/null +++ b/sysdeps/unix/sysv/linux/hppa/syscall_cancel.S @@ -0,0 +1,81 @@ +/* Cancellable syscall wrapper. Linux/hppa 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, + 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 %r26,%r20 + stw %r28,-108(%r30) + ldw -184(%r30),%r28 + copy %r24,%r26 + stw %r28,-112(%r30) + ldw -188(%r30),%r28 + stw %r28,-116(%r30) + ldw -192(%r30),%r28 + stw %r4,-104(%r30) + stw %r28,-120(%r30) + copy %r25,%r28 + copy %r23,%r25 +#ifdef __PIC__ + stw %r19,-32(%r30) +#endif + cfi_offset (4, 24) + + .global __syscall_cancel_arch_start +__syscall_cancel_arch_start: + ldw 0(%r20),%r20 + bb,< %r20,31-TCB_CANCELED_BIT,1f + ldw -120(%r30),%r21 + ldw -116(%r30),%r22 + ldw -112(%r30),%r23 + ldw -108(%r30),%r24 + copy %r19, %r4 + ble 0x100(%sr2, %r0) + + .global __syscall_cancel_arch_end +__syscall_cancel_arch_end: + + copy %r28,%r20 + copy %r4,%r19 + + ldw -148(%r30),%r2 + ldw -104(%r30),%r4 + bv %r0(%r2) + ldo -128(%r30),%r30 +1: + bl __syscall_do_cancel,%r2 + nop + nop + +END(__syscall_cancel_arch)
next reply other threads:[~2023-04-11 14:19 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-04-11 14:19 Adhemerval Zanella [this message] -- strict thread matches above, loose matches on Subject: below -- 2023-04-07 17:08 Adhemerval Zanella
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