1  /* Definitions of target machine for GNU compiler.  Vxworks Aarch 64bit
       2     version.
       3     Copyright (C) 2018-2023 Free Software Foundation, Inc.
       4     Contributed by Douglas B Rupp
       5  
       6  This file is part of GCC.
       7  
       8  GCC is free software; you can redistribute it and/or modify it under
       9  the terms of the GNU General Public License as published by the Free
      10  Software Foundation; either version 3, or (at your option) any later
      11  version.
      12  
      13  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      14  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      15  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      16  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  #undef SUBTARGET_OVERRIDE_OPTIONS
      23  #define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS
      24  
      25  #undef LINK_SPEC
      26  #define LINK_SPEC VXWORKS_LINK_SPEC
      27  
      28  #undef LIB_SPEC
      29  #define LIB_SPEC VXWORKS_LIB_SPEC
      30  
      31  #undef STARTFILE_SPEC
      32  #define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC
      33  
      34  #undef ENDFILE_SPEC
      35  #define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC
      36  
      37  #undef CPP_SPEC
      38  #define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC
      39  
      40  #undef CC1_SPEC
      41  #define CC1_SPEC VXWORKS_CC1_SPEC
      42  
      43  #undef FUNCTION_PROFILER
      44  #define FUNCTION_PROFILER VXWORKS_FUNCTION_PROFILER
      45  
      46  #undef TARGET_OS_CPP_BUILTINS
      47  #define TARGET_OS_CPP_BUILTINS()	  \
      48    do {					  \
      49      if (TARGET_BIG_END)                         \
      50        builtin_define ("ARMEB");                 \
      51      else                                        \
      52        builtin_define ("ARMEL");                 \
      53      builtin_define \
      54        (VX_CPU_PREFIX "CPU=" VX_CPU_PREFIX "ARMARCH8A");	\
      55      VXWORKS_OS_CPP_BUILTINS ();		  \
      56    } while (0)
      57  
      58  /* Static stack checking is supported.  */
      59  #define STACK_CHECK_STATIC_BUILTIN 1
      60  
      61  #undef STACK_CHECK_PROTECT
      62  #define STACK_CHECK_PROTECT 16384
      63  
      64  /* The VxWorks environment on aarch64 is llvm-based.  */
      65  #undef VXWORKS_PERSONALITY
      66  #define VXWORKS_PERSONALITY "llvm"
      67  
      68  /* VxWorks uses R18 as a TCB pointer.  We must pick something else as
      69     the static chain and R18 needs to be claimed "fixed".  Until we
      70     arrange to override the common parts of the port family to
      71     acknowledge the latter, configure --with-specs="-ffixed-r18".  */
      72  #undef  STATIC_CHAIN_REGNUM
      73  #define STATIC_CHAIN_REGNUM 9
      74