1  /* Definitions of target support for Altera Nios II systems
       2     running GNU/Linux with ELF format.
       3     Copyright (C) 2012-2023 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 MUSL_DYNAMIC_LINKER
      35  #define MUSL_DYNAMIC_LINKER  "/lib/ld-musl-nios2.so.1"
      36  
      37  #undef LINK_SPEC
      38  #define LINK_SPEC LINK_SPEC_ENDIAN \
      39   "%{shared:-shared} \
      40    %{!shared: \
      41      %{!static: \
      42        %{rdynamic:-export-dynamic} \
      43        -dynamic-linker " GNU_USER_DYNAMIC_LINKER "} \
      44      %{static:-static}}"
      45  
      46  /* This toolchain implements the ABI for Linux Systems documented in the
      47     Nios II Processor Reference Handbook.  */
      48  #define TARGET_LINUX_ABI 1
      49  
      50  /* For Linux, we have access to kernel support for atomic operations,
      51     add initialization for __sync_* builtins.  */
      52  #undef TARGET_INIT_LIBFUNCS
      53  #define TARGET_INIT_LIBFUNCS nios2_init_libfuncs