1 /* Function descriptors. IA64 version. 2 Copyright (C) 2003-2022 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_ia64_fptr_h 20 #define dl_ia64_fptr_h 1 21 22 #include <ia64intrin.h> 23 #include <sysdeps/generic/dl-fptr.h> 24 25 #define COMPARE_AND_SWAP(ptr, old, new) \ 26 __sync_bool_compare_and_swap (ptr, old, new) 27 28 /* There are currently 123 dynamic symbols in ld.so. 29 ELF_MACHINE_BOOT_FPTR_TABLE_LEN needs to be at least that big. */ 30 #define ELF_MACHINE_BOOT_FPTR_TABLE_LEN 200 31 32 #define ELF_MACHINE_LOAD_ADDRESS(var, symbol) \ 33 asm ("movl %0 = @gprel (" #symbol ");; add %0 = %0, gp" : "=&r" (var)); 34 35 /* We don't have a gcc helper to extract the plabel info. */ 36 #define ELF_PTR_TO_FDESC(ptr) \ 37 ({ union { \ 38 void *_ptr; \ 39 struct fdesc *_fdesc; \ 40 } _u; \ 41 _u._ptr = ptr; \ 42 _u._fdesc; \ 43 }) 44 45 #endif /* !dl_ia64_fptr_h */ 46