gcc/config/aarch64/aarch64-vxworks.h

/* Definitions of target machine for GNU compiler.  Vxworks Aarch 64bit
   version.
   Copyright (C) 2018-2026 Free Software Foundation, Inc.
   Contributed by Douglas B Rupp

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3.  If not see
<http://www.gnu.org/licenses/>.  */

#undef SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS VXWORKS_OVERRIDE_OPTIONS

#undef LINK_SPEC
#define LINK_SPEC VXWORKS_LINK_SPEC

#undef LIB_SPEC
#define LIB_SPEC VXWORKS_LIB_SPEC

#undef STARTFILE_SPEC
#define STARTFILE_SPEC VXWORKS_STARTFILE_SPEC

#undef ENDFILE_SPEC
#define ENDFILE_SPEC VXWORKS_ENDFILE_SPEC

#undef CPP_SPEC
#define CPP_SPEC VXWORKS_ADDITIONAL_CPP_SPEC

#undef CC1_SPEC
#define CC1_SPEC VXWORKS_CC1_SPEC

#undef FUNCTION_PROFILER
#define FUNCTION_PROFILER VXWORKS_FUNCTION_PROFILER

#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS()	  \
  do {					  \
    if (TARGET_BIG_END)                         \
      builtin_define ("ARMEB");                 \
    else                                        \
      builtin_define ("ARMEL");                 \
    builtin_define \
      (VX_CPU_PREFIX "CPU=" VX_CPU_PREFIX "ARMARCH8A");	\
    VXWORKS_OS_CPP_BUILTINS ();		  \
  } while (0)

/* Static stack checking is supported.  */
#define STACK_CHECK_STATIC_BUILTIN 1

#undef STACK_CHECK_PROTECT
#define STACK_CHECK_PROTECT 16384

/* The VxWorks environment on aarch64 is llvm-based.  */
#undef VXWORKS_PERSONALITY
#define VXWORKS_PERSONALITY "llvm"

/* VxWorks uses R18 as a TCB pointer.  We must pick something else as
   the static chain and R18 needs to be claimed "fixed" (TARGET_OS_USES_R18
   does that in aarch64_conditional_register_usage).  */
#undef  STATIC_CHAIN_REGNUM
#define STATIC_CHAIN_REGNUM 9
#define TARGET_OS_USES_R18