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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-03 11:26:28 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-10 15:42:51 -0300 |
| commit | 44b1af8914227de6047ee2c04eaed2cc925789a2 (patch) | |
| tree | 260e0c5d3f21321035d0d6cddac7d35ac4251d64 | |
| parent | c262078dd270a21183ea473d26e30516df3f84fa (diff) | |
| download | glibc-44b1af8914227de6047ee2c04eaed2cc925789a2.tar.gz | |
hppa: Fix Race conditions in pthread cancellation [BZ#12683]
By adding the required syscall_cancel.S.
Checked on hppa-linux-gnu.
| -rw-r--r-- | sysdeps/unix/sysv/linux/hppa/syscall_cancel.S | 81 |
1 files changed, 81 insertions, 0 deletions
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) |