/* Run-time dynamic linker data structures for loaded ELF shared objects. Copyright (C) 2005-2013 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 */