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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-03 11:28:09 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-04-10 15:42:51 -0300 |
| commit | 9b7719c73513af0c65f650e776d794b2ba759e65 (patch) | |
| tree | 02884c910a83993e09f1dea558b75950183f7279 | |
| parent | 44b1af8914227de6047ee2c04eaed2cc925789a2 (diff) | |
| download | glibc-9b7719c73513af0c65f650e776d794b2ba759e65.tar.gz | |
m68k: Fix Race conditions in pthread cancellation [BZ#12683]
By adding the required syscall_cancel.S.
Checked on m68k-linux-gnu.
| -rw-r--r-- | sysdeps/unix/sysv/linux/m68k/syscall_cancel.S | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/m68k/syscall_cancel.S b/sysdeps/unix/sysv/linux/m68k/syscall_cancel.S new file mode 100644 index 0000000000..8923bcc71c --- /dev/null +++ b/sysdeps/unix/sysv/linux/m68k/syscall_cancel.S @@ -0,0 +1,84 @@ +/* Cancellable syscall wrapper. Linux/m68k 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) +#ifdef __mcoldfire__ + lea (-16,%sp),%sp + movem.l %d2-%d5,(%sp) +#else + movem.l %d2-%d5,-(%sp) +#endif + cfi_def_cfa_offset (20) + cfi_offset (2, -20) + cfi_offset (3, -16) + cfi_offset (4, -12) + cfi_offset (5, -8) + + .global __syscall_cancel_arch_start +__syscall_cancel_arch_start: + + move.l 20(%sp),%a0 + move.l (%a0),%d0 +#ifdef __mcoldfire__ + move.w %d0,%ccr + jeq 1f +#else + btst #TCB_CANCELED_BIT,%d0 + jne 1f +#endif + + move.l 48(%sp),%a0 + move.l 44(%sp),%d5 + move.l 40(%sp),%d4 + move.l 36(%sp),%d3 + move.l 32(%sp),%d2 + move.l 28(%sp),%d1 + move.l 24(%sp),%d0 + trap #0 + + .global __syscall_cancel_arch_end +__syscall_cancel_arch_end: + +#ifdef __mcoldfire__ + movem.l (%sp),%d2-%d5 + lea (16,%sp),%sp +#else + movem.l (%sp)+,%d2-%d5 +#endif + rts + +1: +#ifdef PIC + bsr.l __syscall_do_cancel +#else + jsr __syscall_do_cancel +#endif +END (__syscall_cancel_arch) |