From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
To: libc-alpha@sourceware.org
Subject: [PATCH v5 21/22] or1k: Fix Race conditions in pthread cancellation [BZ#12683]
Date: Mon, 10 Apr 2023 17:46:13 -0300 [thread overview]
Message-ID: <20230410204614.4129551-13-adhemerval.zanella@linaro.org> (raw)
In-Reply-To: <20230410204614.4129551-1-adhemerval.zanella@linaro.org>
By adding the required syscall_cancel.S.
Checked against a build and make check run-built-tests=no for
or1k-linux-gnu-soft.
---
sysdeps/unix/sysv/linux/or1k/syscall_cancel.S | 63 +++++++++++++++++++
1 file changed, 63 insertions(+)
create mode 100644 sysdeps/unix/sysv/linux/or1k/syscall_cancel.S
diff --git a/sysdeps/unix/sysv/linux/or1k/syscall_cancel.S b/sysdeps/unix/sysv/linux/or1k/syscall_cancel.S
new file mode 100644
index 0000000000..284029b244
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/or1k/syscall_cancel.S
@@ -0,0 +1,63 @@
+/* Cancellable syscall wrapper. Linux/or1k 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>
+
+ENTRY (__syscall_cancel_arch)
+ l.addi r1, r1, -4
+ cfi_def_cfa_offset (4)
+ l.sw 0(r1), r9
+ cfi_offset (9, -4)
+
+ .global __syscall_cancel_arch_start
+__syscall_cancel_arch_start:
+
+ /* if (*cancelhandling & CANCELED_BITMASK)
+ __syscall_do_cancel() */
+ l.movhi r19, hi(0)
+ l.lwz r17, 0(r3)
+ l.andi r17, r17, 8
+ l.sfeq r17, r19
+ l.bnf 1f
+
+ /* Issue a 6 argument syscall. */
+ l.or r11, r4, r4
+ l.or r3, r5, r5
+ l.or r4, r6, r6
+ l.or r5, r7, r7
+ l.or r6, r8, r8
+ l.lwz r7, 4(r1)
+ l.lwz r8, 8(r1)
+ l.sys 1
+ l.nop
+
+ .global __syscall_cancel_arch_end
+__syscall_cancel_arch_end:
+
+ l.lwz r9, 0(r1)
+ l.jr r9
+ l.addi r1, r1, 4
+ cfi_remember_state
+ cfi_def_cfa_offset (0)
+ cfi_restore (9)
+1:
+ cfi_restore_state
+ l.jal __syscall_do_cancel
+ l.nop
+END (__syscall_cancel_arch)
--
2.34.1
next prev parent reply other threads:[~2023-04-10 20:46 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-04-10 19:58 [PATCH v5 00/22] " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 01/22] nptl: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 02/22] x86_64: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 03/22] x32: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 04/22] i386: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 05/22] aarch64: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 06/22] arm: " Adhemerval Zanella
2023-04-10 19:58 ` [PATCH v5 07/22] powerpc: " Adhemerval Zanella
2023-04-14 15:27 ` Paul E Murphy
2023-04-27 11:13 ` Adhemerval Zanella Netto
2023-04-10 19:58 ` [PATCH v5 08/22] sparc: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 09/22] s390: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 10/22] riscv: " Adhemerval Zanella
2023-04-11 6:35 ` Xi Ruoyao
2023-04-11 7:01 ` Xi Ruoyao
2023-04-11 13:49 ` Adhemerval Zanella Netto
2023-04-10 20:46 ` [PATCH v5 11/22] arc: Fix Race conditions in pthread cancellation [BZ #12683] Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 12/22] ia64: Fix Race conditions in pthread cancellation [BZ#12683] Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 13/22] sh: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 14/22] nios2: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 15/22] microblaze: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 16/22] hppa: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 17/22] m68k: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 18/22] alpha: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 19/22] csky: " Adhemerval Zanella
2023-04-10 20:46 ` [PATCH v5 20/22] mips: " Adhemerval Zanella
2023-04-10 20:46 ` Adhemerval Zanella [this message]
2023-04-10 20:46 ` [PATCH v5 22/22] loongarch: " Adhemerval Zanella
2023-04-11 6:19 ` Xi Ruoyao
2023-04-11 12:00 ` caiyinyu
2023-04-11 12:21 ` caiyinyu
2023-04-11 12:55 ` Xi Ruoyao
2023-04-11 13:54 ` Adhemerval Zanella Netto
2023-04-11 13:56 ` [PATCH v5 09/22] s390: " Stefan Liebler
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