1/* Definitions of target support for Altera Nios II systems 2 running GNU/Linux with ELF format. 3 Copyright (C) 2012-2020 Free Software Foundation, Inc. 4 Contributed by Mentor Graphics, Inc. 5 6 This file is part of GCC. 7 8 GCC is free software; you can redistribute it and/or modify it 9 under the terms of the GNU General Public License as published 10 by the Free Software Foundation; either version 3, or (at your 11 option) any later version. 12 13 GCC is distributed in the hope that it will be useful, but WITHOUT 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 16 License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GCC; see the file COPYING3. If not see 20 <http://www.gnu.org/licenses/>. */ 21 22#define TARGET_OS_CPP_BUILTINS() \ 23 do \ 24 { \ 25 GNU_USER_TARGET_OS_CPP_BUILTINS(); \ 26 } \ 27 while (0) 28 29#undef CPP_SPEC 30#define CPP_SPEC "%{posix:-D_POSIX_SOURCE} %{pthread:-D_REENTRANT}" 31 32#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-nios2.so.1" 33 34#undef LINK_SPEC 35#define LINK_SPEC LINK_SPEC_ENDIAN \ 36 "%{shared:-shared} \ 37 %{!shared: \ 38 %{!static: \ 39 %{rdynamic:-export-dynamic} \ 40 -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \ 41 %{static:-static}}" 42 43/* This toolchain implements the ABI for Linux Systems documented in the 44 Nios II Processor Reference Handbook. */ 45#define TARGET_LINUX_ABI 1 46 47/* For Linux, we have access to kernel support for atomic operations, 48 add initialization for __sync_* builtins. */ 49#undef TARGET_INIT_LIBFUNCS 50#define TARGET_INIT_LIBFUNCS nios2_init_libfuncs 51