1 /* Function descriptors. Generic version. 2 Copyright (C) 1995-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #ifndef dl_fptr_h 20 #define dl_fptr_h 1 21 22 /* An FDESC is a function descriptor. */ 23 24 struct fdesc 25 { 26 ElfW(Addr) ip; /* code entry point */ 27 ElfW(Addr) gp; /* global pointer */ 28 }; 29 30 struct fdesc_table 31 { 32 struct fdesc_table *next; 33 unsigned int len; /* # of entries in fdesc table */ 34 volatile unsigned int first_unused; /* index of first available entry */ 35 struct fdesc fdesc[0]; 36 }; 37 38 struct link_map; 39 40 extern ElfW(Addr) _dl_boot_fptr_table []; 41 42 extern ElfW(Addr) _dl_make_fptr (struct link_map *, const ElfW(Sym) *, 43 ElfW(Addr)); 44 45 #endif /* !dl_fptr_h */ 46