diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/ia64/pointer_guard.h')
| -rw-r--r-- | sysdeps/unix/sysv/linux/ia64/pointer_guard.h | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/ia64/pointer_guard.h b/sysdeps/unix/sysv/linux/ia64/pointer_guard.h new file mode 100644 index 0000000000..8631f39374 --- /dev/null +++ b/sysdeps/unix/sysv/linux/ia64/pointer_guard.h @@ -0,0 +1,44 @@ +/* Pointer obfuscation implenentation. ia64 version. + Copyright (C) 2005-2022 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 + <https://www.gnu.org/licenses/>. */ + +#ifndef POINTER_GUARD_H +#define POINTER_GUARD_H + +#if IS_IN (rtld) +/* We cannot use the thread descriptor because in ld.so we use setjmp + earlier than the descriptor is initialized. */ +# include <sysdeps/generic/pointer_guard.h> +#else +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(reg, tmpreg) \ + add tmpreg=-16,r13 \ + ;; \ + ld8 tmpreg=[tmpreg] \ + ;; \ + xor reg=reg, tmpreg +# define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg) +# else +# include <stdint.h> +# include <tls.h> +# define PTR_MANGLE(var) \ + (var) = (void *) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ()) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#endif + +#endif /* POINTER_GUARD_H */ |