gcc/config/mips/netbsd.h

/* Definitions of target machine for GNU compiler, for MIPS NetBSD systems.
   Copyright (C) 1993-2021 Free Software Foundation, Inc.

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/>.  */


/* Define default target values.  */

#define TARGET_OS_CPP_BUILTINS()			\
  do							\
    {							\
      NETBSD_OS_CPP_BUILTINS_ELF();			\
      builtin_define ("__NO_LEADING_UNDERSCORES__");	\
      builtin_define ("__GP_SUPPORT__");		\
      if (TARGET_LONG64)				\
	builtin_define ("__LONG64");			\
							\
      if (TARGET_ABICALLS)				\
	builtin_define ("__ABICALLS__");		\
							\
      if (mips_abi == ABI_32)				\
	builtin_define ("__mips_o32");			\
      else if (mips_abi == ABI_EABI)			\
	builtin_define ("__mips_eabi");			\
      else if (mips_abi == ABI_N32)			\
	builtin_define ("__mips_n32");			\
      else if (mips_abi == ABI_64)			\
	builtin_define ("__mips_n64");			\
      else if (mips_abi == ABI_O64)			\
	builtin_define ("__mips_o64");			\
    }							\
  while (0)

/* The generic MIPS TARGET_CPU_CPP_BUILTINS are incorrect for NetBSD.
   Specifically, they define too many namespace-invasive macros.  Override
   them here.  Note this is structured for easy comparison to the version
   in mips.h.

   FIXME: This probably isn't the best solution.  But in the absence
   of something better, it will have to do, for now.  */

#undef TARGET_CPU_CPP_BUILTINS
#define TARGET_CPU_CPP_BUILTINS()				\
  do								\
    {								\
      builtin_assert ("cpu=mips");				\
      builtin_define ("__mips__");				\
      builtin_define ("_mips");					\
								\
      /* No _R3000 or _R4000.  */				\
      if (TARGET_64BIT)						\
	builtin_define ("__mips64");				\
								\
      if (TARGET_FLOAT64)					\
	builtin_define ("__mips_fpr=64");			\
      else							\
	builtin_define ("__mips_fpr=32");			\
								\
      if (TARGET_MIPS16)					\
	builtin_define ("__mips16");				\
								\
      MIPS_CPP_SET_PROCESSOR ("_MIPS_ARCH", mips_arch_info);	\
      MIPS_CPP_SET_PROCESSOR ("_MIPS_TUNE", mips_tune_info);	\
								\
      if (ISA_MIPS1)						\
	builtin_define ("__mips=1");				\
      else if (ISA_MIPS2)					\
	builtin_define ("__mips=2");				\
      else if (ISA_MIPS3)					\
	builtin_define ("__mips=3");				\
      else if (ISA_MIPS4)					\
	builtin_define ("__mips=4");				\
      else if (mips_isa >= MIPS_ISA_MIPS32			\
	       && mips_isa < MIPS_ISA_MIPS64)			\
	builtin_define ("__mips=32");				\
      else if (mips_isa >= MIPS_ISA_MIPS64)			\
	builtin_define ("__mips=64");				\
      if (mips_isa_rev > 0)					\
        builtin_define_with_int_value ("__mips_isa_rev",	\
                                       mips_isa_rev);		\
								\
      if (TARGET_HARD_FLOAT)					\
	builtin_define ("__mips_hard_float");			\
      else if (TARGET_SOFT_FLOAT)				\
	builtin_define ("__mips_soft_float");			\
								\
      if (TARGET_SINGLE_FLOAT)					\
	builtin_define ("__mips_single_float");			\
								\
      if (TARGET_BIG_ENDIAN)					\
	builtin_define ("__MIPSEB__");				\
      else							\
	builtin_define ("__MIPSEL__");				\
								\
      /* No language dialect defines.  */			\
								\
      /* ABIs handled in TARGET_OS_CPP_BUILTINS.  */		\
    }								\
  while (0)


/* Extra specs we need.  */
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS						\
  { "netbsd_cpp_spec",		NETBSD_CPP_SPEC },			\
  { "netbsd_link_spec",		NETBSD_LINK_SPEC_ELF },			\
  { "netbsd_entry_point",	NETBSD_ENTRY_POINT },

/* Provide a SUBTARGET_CPP_SPEC appropriate for NetBSD.  */

#undef SUBTARGET_CPP_SPEC
#define SUBTARGET_CPP_SPEC "%(netbsd_cpp_spec)"

/* Provide a LINK_SPEC appropriate for a NetBSD/mips target.
   This is a copy of LINK_SPEC from <netbsd-elf.h> tweaked for
   the MIPS target.  */

#undef LINK_SPEC
#define LINK_SPEC \
  "%{EL:-m elf32lmip} \
   %{EB:-m elf32bmip} \
   %(endian_spec) \
   %{G*} %{mips1} %{mips2} %{mips3} %{mips4} %{mips32} %{mips32r2} \
   %{mips32r6} %{mips64} %{mips64r6} \
   %(netbsd_link_spec)"

#define NETBSD_ENTRY_POINT "__start"

#undef SUBTARGET_ASM_SPEC
#define SUBTARGET_ASM_SPEC \
  "%{!mno-abicalls: \
     %{!fno-PIC:%{!fno-pic:-KPIC}}}"


/* -G is incompatible with -KPIC which is the default, so only allow objects
   in the small data section if the user explicitly asks for it.  */

#undef MIPS_DEFAULT_GVALUE
#define MIPS_DEFAULT_GVALUE 0


#undef ASM_FINAL_SPEC
#undef SET_ASM_OP


/* NetBSD hasn't historically provided _flush_cache(), but rather
   _cacheflush(), which takes the same arguments as the former.  */
#undef CACHE_FLUSH_FUNC
#define CACHE_FLUSH_FUNC "_cacheflush"


/* Make gcc agree with <machine/ansi.h> */

#undef WCHAR_TYPE
#define WCHAR_TYPE "int"

#undef WCHAR_TYPE_SIZE
#define WCHAR_TYPE_SIZE 32

#undef WINT_TYPE
#define WINT_TYPE "int"