gcc/config/sh/sh-c.c

/* Pragma handling for GCC for Renesas / SuperH SH.
   Copyright (C) 1993-2021 Free Software Foundation, Inc.
   Contributed by Joern Rennecke <joern.rennecke@st.com>.

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 IN_TARGET_CODE 1

#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "target.h"
#include "c-family/c-common.h"
#include "memmodel.h"
#include "tm_p.h"
#include "stringpool.h"
#include "attribs.h"

/* Handle machine specific pragmas to be semi-compatible with Renesas
   compiler.  */

/* Add ATTR to the attributes of the current function.  If there is no
   such function, save it to be added to the attributes of the next
   function.  */
static void
sh_add_function_attribute (const char *attr)
{
  tree id = get_identifier (attr);

  if (current_function_decl)
    decl_attributes (&current_function_decl,
		     tree_cons (id, NULL_TREE, NULL_TREE), 0);
  else
    {
      *sh_deferred_function_attributes_tail
	= tree_cons (id, NULL_TREE, *sh_deferred_function_attributes_tail);
      sh_deferred_function_attributes_tail
	= &TREE_CHAIN (*sh_deferred_function_attributes_tail);
    }
}

void
sh_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
{
  sh_add_function_attribute ("interrupt_handler");
}

void
sh_pr_trapa (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
{
  sh_add_function_attribute ("trapa_handler");
}

void
sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
{
  sh_add_function_attribute ("nosave_low_regs");
}

#define builtin_define(TXT) cpp_define (pfile, TXT)
#define builtin_assert(TXT) cpp_assert (pfile, TXT)

/* Implement the TARGET_CPU_CPP_BUILTINS macro  */
void
sh_cpu_cpp_builtins (cpp_reader* pfile)
{
  builtin_define ("__sh__");
  builtin_assert ("cpu=sh");
  builtin_assert ("machine=sh");
  switch ((int) sh_cpu)
    {
    case PROCESSOR_SH1:
      builtin_define ("__sh1__");
      builtin_define ("__SH1__");
      break;
    case PROCESSOR_SH2:
      builtin_define ("__sh2__");
      builtin_define ("__SH2__");
      break;
    case PROCESSOR_SH2E:
      builtin_define ("__SH2E__");
      break;
    case PROCESSOR_SH2A:
      builtin_define ("__SH2A__");
      if (TARGET_SH2A_DOUBLE)
	builtin_define (TARGET_FPU_SINGLE
			? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
      else
	builtin_define (TARGET_FPU_ANY
			? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
      break;
    case PROCESSOR_SH3:
      builtin_define ("__sh3__");
      builtin_define ("__SH3__");
      if (TARGET_HARD_SH4)
	builtin_define ("__SH4_NOFPU__");
      break;
    case PROCESSOR_SH3E:
      builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
      break;
    case PROCESSOR_SH4:
      builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
      break;
    case PROCESSOR_SH4A: \
      builtin_define ("__SH4A__");
      builtin_define (TARGET_SH4
		      ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
		      : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
		      : "__SH4_NOFPU__");
      break;
    }
  if (TARGET_FPU_ANY)
    builtin_define ("__SH_FPU_ANY__");
  if (TARGET_FPU_DOUBLE)
    builtin_define ("__SH_FPU_DOUBLE__");
  if (TARGET_HITACHI)
    builtin_define ("__HITACHI__");
  if (TARGET_FMOVD)
    builtin_define ("__FMOVD_ENABLED__");
  if (TARGET_FDPIC)
    {
      builtin_define ("__SH_FDPIC__");
      builtin_define ("__FDPIC__");
    }
  builtin_define (TARGET_LITTLE_ENDIAN
		  ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__");

  cpp_define_formatted (pfile, "__SH_ATOMIC_MODEL_%s__",
			selected_atomic_model ().cdef_name);
}