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* [glibc/azanella/bz12683] loongarch: Fix Race conditions in pthread cancellation [BZ#12683]
@ 2023-04-07 17:08 Adhemerval Zanella
0 siblings, 0 replies; 2+ messages in thread
From: Adhemerval Zanella @ 2023-04-07 17:08 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=235581ee858071eacc3130ae05ad9ae16b00d1e5
commit 235581ee858071eacc3130ae05ad9ae16b00d1e5
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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 | 54 ++++++++++++++++++++++
1 file changed, 54 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..574252fec1
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S
@@ -0,0 +1,54 @@
+/* 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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+#include <descr-const.h>
+
+ENTRY (__syscall_cancel_arch)
+
+ .global __syscall_cancel_arch_start
+__syscall_cancel_arch_start:
+
+ /* if (*cancelhandling & CANCELED_BITMASK)
+ __syscall_do_cancel() */
+ ldptr.w $r12,$r4,0
+ andi $r12,$r12,TCB_CANCELED_BITMASK
+ bnez $r12,1f
+
+ /* Issue a 6 argument syscall. */
+ or $r13,$r5,$r0
+ or $r4,$r6,$r0
+ or $r5,$r7,$r0
+ or $r6,$r8,$r0
+ or $r7,$r9,$r0
+ or $r8,$r10,$r0
+ or $r9,$r11,$r0
+ or $r11,$r13,$r0
+ syscall 0
+
+ .global __syscall_cancel_arch_end
+__syscall_cancel_arch_end:
+ jr $r1
+1:
+ addi.d $r3,$r3,-16
+ cfi_def_cfa_offset (16)
+ st.d $r1,$r3,8
+ cfi_offset (1, -8)
+ bl __syscall_do_cancel
+
+END (__syscall_cancel_arch)
^ permalink raw reply [flat|nested] 2+ messages in thread
* [glibc/azanella/bz12683] loongarch: Fix Race conditions in pthread cancellation [BZ#12683]
@ 2023-04-11 14:20 Adhemerval Zanella
0 siblings, 0 replies; 2+ messages in thread
From: Adhemerval Zanella @ 2023-04-11 14:20 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=45586e1434105342790a502f0206cdd0c24dc1aa
commit 45586e1434105342790a502f0206cdd0c24dc1aa
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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
+ <http://www.gnu.org/licenses/>. */
+
+#include <sysdep.h>
+#include <descr-const.h>
+
+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)
^ permalink raw reply [flat|nested] 2+ messages in thread
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2023-04-07 17:08 [glibc/azanella/bz12683] loongarch: Fix Race conditions in pthread cancellation [BZ#12683] Adhemerval Zanella
2023-04-11 14:20 Adhemerval Zanella
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