gcc/config/nios2/linux.h

   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