diff options
Diffstat (limited to 'sysdeps/aarch64/__mtag_address_get_tag.S')
| -rw-r--r-- | sysdeps/aarch64/__mtag_address_get_tag.S | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/sysdeps/aarch64/__mtag_address_get_tag.S b/sysdeps/aarch64/__mtag_address_get_tag.S new file mode 100644 index 0000000000..4ffe884c95 --- /dev/null +++ b/sysdeps/aarch64/__mtag_address_get_tag.S @@ -0,0 +1,32 @@ +/* Copyright (C) 2020 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> + +#ifdef USE_MTAG +#define ptr x0 + + .arch armv8.5-a + .arch_extension memtag + +ENTRY (__libc_mtag_address_get_tag) + + ldg ptr, [ptr] + ret +END (__libc_mtag_address_get_tag) +#endif /* USE_MTAG */ |