diff options
Diffstat (limited to 'sysdeps/generic')
| -rw-r--r-- | sysdeps/generic/dl-relocate-ld.h | 32 | ||||
| -rw-r--r-- | sysdeps/generic/ldsodefs.h | 7 |
2 files changed, 34 insertions, 5 deletions
diff --git a/sysdeps/generic/dl-relocate-ld.h b/sysdeps/generic/dl-relocate-ld.h new file mode 100644 index 0000000000..5fae206db9 --- /dev/null +++ b/sysdeps/generic/dl-relocate-ld.h @@ -0,0 +1,32 @@ +/* Check if dynamic section should be relocated. Generic version. + Copyright (C) 2021 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 _DL_RELOCATE_LD_H +#define _DL_RELOCATE_LD_H + +/* Return true if dynamic section in the shared library L should be + relocated. */ + +static inline bool +dl_relocate_ld (const struct link_map *l) +{ + /* Don't relocate dynamic section if it is readonly */ + return !l->l_ld_readonly; +} + +#endif /* _DL_RELOCATE_LD_H */ diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h index 6e50fcd7cd..d49529da0d 100644 --- a/sysdeps/generic/ldsodefs.h +++ b/sysdeps/generic/ldsodefs.h @@ -75,11 +75,8 @@ __BEGIN_DECLS have to be accessed via the D_PTR macro. The macro is needed since for most architectures the entry is already relocated - but for some not and we need to relocate at access time. */ -#ifdef DL_RO_DYN_SECTION -# define D_PTR(map, i) ((map)->i->d_un.d_ptr + (map)->l_addr) -#else -# define D_PTR(map, i) (map)->i->d_un.d_ptr -#endif +#define D_PTR(map, i) \ + ((map)->i->d_un.d_ptr + (dl_relocate_ld (map) ? 0 : (map)->l_addr)) /* Result of the lookup functions and how to retrieve the base address. */ typedef struct link_map *lookup_t; |