| /* Run-time dynamic linker data structures for loaded ELF shared objects. |
| Copyright (C) 2005-2018 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/>. */ |
| |
| #ifndef _LDSODEFS_H |
| |
| /* Get the real definitions. */ |
| #include_next <ldsodefs.h> |
| |
| /* Now define our stuff. */ |
| |
| #if _CALL_ELF != 2 |
| |
| static __always_inline bool |
| _dl_ppc64_is_opd_sym (const struct link_map *l, const ElfW(Sym) *sym) |
| { |
| return (ELFW(ST_TYPE) (sym->st_info) == STT_FUNC |
| && l->l_addr + sym->st_value >= (ElfW(Addr)) l->l_ld |
| && l->l_addr + sym->st_value < l->l_map_end |
| && sym->st_size != 0); |
| } |
| |
| static __always_inline bool |
| _dl_ppc64_addr_sym_match (const struct link_map *l, const ElfW(Sym) *sym, |
| const ElfW(Sym) *matchsym, ElfW(Addr) addr) |
| { |
| ElfW(Addr) value = l->l_addr + sym->st_value; |
| if (_dl_ppc64_is_opd_sym (l, sym)) |
| { |
| if (addr < value || addr >= value + 24) |
| { |
| value = *(ElfW(Addr) *) value; |
| if (addr < value || addr >= value + sym->st_size) |
| return false; |
| } |
| } |
| else if (sym->st_shndx == SHN_UNDEF || sym->st_size == 0) |
| { |
| if (addr != value) |
| return false; |
| } |
| else if (addr < value || addr >= value + sym->st_size) |
| return false; |
| |
| if (matchsym == NULL) |
| return true; |
| |
| ElfW(Addr) matchvalue = l->l_addr + matchsym->st_value; |
| if (_dl_ppc64_is_opd_sym (l, matchsym) |
| && (addr < matchvalue || addr > matchvalue + 24)) |
| matchvalue = *(ElfW(Addr) *) matchvalue; |
| |
| return matchvalue < value; |
| } |
| |
| /* If this is a function symbol defined past the end of our dynamic |
| section, then it must be a function descriptor. Allow these symbols |
| to match their associated function code range as well as the |
| descriptor addresses. */ |
| #undef DL_ADDR_SYM_MATCH |
| #define DL_ADDR_SYM_MATCH(L, SYM, MATCHSYM, ADDR) \ |
| _dl_ppc64_addr_sym_match (L, SYM, MATCHSYM, ADDR) |
| |
| #endif |
| |
| #endif /* ldsodefs.h */ |