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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-03 11:20:49 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-10 15:42:51 -0300 |
| commit | 3e940764ffd68426064868953282f87ee82d54ea (patch) | |
| tree | e1f18b82cd0c21b5c1ed5ad24ed32d77e3cfffe0 | |
| parent | 0e9567f22fdd4b2319f01dc5f32238acdcefd5f6 (diff) | |
| download | glibc-3e940764ffd68426064868953282f87ee82d54ea.tar.gz | |
arc: 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
arc-linux-gnu, arc-linux-gnuhf, and arceb-linux-gnu.
| -rw-r--r-- | sysdeps/unix/sysv/linux/arc/syscall_cancel.S | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/arc/syscall_cancel.S b/sysdeps/unix/sysv/linux/arc/syscall_cancel.S new file mode 100644 index 0000000000..fa02af4163 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arc/syscall_cancel.S @@ -0,0 +1,56 @@ +/* Cancellable syscall wrapper. Linux/ARC 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, + __syscall_arg_t nr, + __syscall_arg_t arg1, + __syscall_arg_t arg2, + __syscall_arg_t arg3, + __syscall_arg_t arg4, + __syscall_arg_t arg5, + __syscall_arg_t arg6) */ + +ENTRY (__syscall_cancel_arch) + + .globl __syscall_cancel_arch_start +__syscall_cancel_arch_start: + ld_s r12,[r0] + bbit1 r12, TCB_CANCELED_BITMASK, 1f + mov_s r8, r1 + mov_s r0, r2 + mov_s r1, r3 + mov_s r2, r4 + mov_s r3, r5 + mov_s r4, r6 + mov_s r5, r7 + trap_s 0 + + .globl __syscall_cancel_arch_end +__syscall_cancel_arch_end: + j_s [blink] + + .align 4 +1: push_s blink + cfi_def_cfa_offset (4) + cfi_offset (31, -4) + bl @__syscall_do_cancel + +END (__syscall_cancel_arch) |