diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/csky')
| -rw-r--r-- | sysdeps/unix/sysv/linux/csky/pointer_guard.h | 68 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/csky/sysdep.h | 46 |
2 files changed, 68 insertions, 46 deletions
diff --git a/sysdeps/unix/sysv/linux/csky/pointer_guard.h b/sysdeps/unix/sysv/linux/csky/pointer_guard.h new file mode 100644 index 0000000..ed68322 --- /dev/null +++ b/sysdeps/unix/sysv/linux/csky/pointer_guard.h @@ -0,0 +1,68 @@ +/* Pointer obfuscation implenentation. C-SKY version. + Copyright (C) 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) \ + || (!defined SHARED && (IS_IN (libc) || IS_IN (libpthread)))) +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(dst, src, guard) \ + grs t0, 1f; \ +1: \ + lrw guard, 1b@GOTPC; \ + addu t0, guard; \ + lrw guard, __pointer_chk_guard_local@GOT; \ + ldr.w guard, (t0, guard << 0); \ + ldw guard, (guard, 0); \ + xor dst, src, guard; +# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard) +# define PTR_MANGLE2(dst, src, guard) \ + xor dst, src, guard +# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard) +# else +extern uintptr_t __pointer_chk_guard_local; +# define PTR_MANGLE(var) \ + (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#else +# ifdef __ASSEMBLER__ +# define PTR_MANGLE(dst, src, guard) \ + grs t0, 1f; \ +1: \ + lrw guard, 1b@GOTPC; \ + addu t0, guard; \ + lrw guard, __pointer_chk_guard@GOT; \ + ldr.w guard, (t0, guard << 0); \ + ldw guard, (guard, 0); \ + xor dst, src, guard; +# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard) +# define PTR_MANGLE2(dst, src, guard) \ + xor dst, src, guard +# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard) +# else +# include <stdint.h> +extern uintptr_t __pointer_chk_guard; +# define PTR_MANGLE(var) \ + (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard) +# define PTR_DEMANGLE(var) PTR_MANGLE (var) +# endif +#endif + +#endif /* POINTER_GUARD_H */ diff --git a/sysdeps/unix/sysv/linux/csky/sysdep.h b/sysdeps/unix/sysv/linux/csky/sysdep.h index 56c527f..76b09f0 100644 --- a/sysdeps/unix/sysv/linux/csky/sysdep.h +++ b/sysdeps/unix/sysv/linux/csky/sysdep.h @@ -466,50 +466,4 @@ __local_syscall_error: \ #endif /* __ASSEMBLER__ */ -/* Pointer mangling support. */ -#if (IS_IN (rtld) \ - || (!defined SHARED && (IS_IN (libc) || IS_IN (libpthread)))) -# ifdef __ASSEMBLER__ -# define PTR_MANGLE(dst, src, guard) \ - grs t0, 1f; \ -1: \ - lrw guard, 1b@GOTPC; \ - addu t0, guard; \ - lrw guard, __pointer_chk_guard_local@GOT; \ - ldr.w guard, (t0, guard << 0); \ - ldw guard, (guard, 0); \ - xor dst, src, guard; -# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard) -# define PTR_MANGLE2(dst, src, guard) \ - xor dst, src, guard -# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard) -# else -extern uintptr_t __pointer_chk_guard_local; -# define PTR_MANGLE(var) \ - (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard_local) -# define PTR_DEMANGLE(var) PTR_MANGLE (var) -# endif -#else -# ifdef __ASSEMBLER__ -# define PTR_MANGLE(dst, src, guard) \ - grs t0, 1f; \ -1: \ - lrw guard, 1b@GOTPC; \ - addu t0, guard; \ - lrw guard, __pointer_chk_guard@GOT; \ - ldr.w guard, (t0, guard << 0); \ - ldw guard, (guard, 0); \ - xor dst, src, guard; -# define PTR_DEMANGLE(dst, src, guard) PTR_MANGLE (dst, src, guard) -# define PTR_MANGLE2(dst, src, guard) \ - xor dst, src, guard -# define PTR_DEMANGLE2(dst, src, guard) PTR_MANGLE2 (dst, src, guard) -# else -extern uintptr_t __pointer_chk_guard; -# define PTR_MANGLE(var) \ - (var) = (__typeof (var)) ((uintptr_t) (var) ^ __pointer_chk_guard) -# define PTR_DEMANGLE(var) PTR_MANGLE (var) -# endif -#endif - #endif /* linux/csky/sysdep.h */ |