diff options
| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-03 15:50:35 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-11 10:54:05 -0300 |
| commit | 45586e1434105342790a502f0206cdd0c24dc1aa (patch) | |
| tree | e7220c5e6618bc16f509f7f290f8c30538192dbf | |
| parent | c02d6d2976c4ab41d60f191fa9ab7e9a25be0788 (diff) | |
loongarch: Fix Race conditions in pthread cancellation [BZ#12683]azanella/bz12683
By adding the required syscall_cancel.S.
Checked against a build and make check run-built-tests=no for
loongarch64-linux-gnu-lp64d.
| -rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/syscall_cancel.S | 50 |
1 files changed, 50 insertions, 0 deletions
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) |