gcc/config/sh/sh-c.c

   1 /* Pragma handling for GCC for Renesas / SuperH SH.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
   3    2003, 2004, 2005, 2006, 2007, 2012 Free Software Foundation, Inc.
   4    Contributed by Joern Rennecke <joern.rennecke@st.com>.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public 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 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "tree.h"
  27 #include "tm_p.h"
  28 #include "cpplib.h"
  29 #include "c-family/c-common.h"
  30 #include "target.h"
  31
  32 /* Handle machine specific pragmas to be semi-compatible with Renesas
  33    compiler.  */
  34
  35 /* Add ATTR to the attributes of the current function.  If there is no
  36    such function, save it to be added to the attributes of the next
  37    function.  */
  38 static void
  39 sh_add_function_attribute (const char *attr)
  40 {
  41   tree id = get_identifier (attr);
  42
  43   if (current_function_decl)
  44     decl_attributes (&current_function_decl,
  45                      tree_cons (id, NULL_TREE, NULL_TREE), 0);
  46   else
  47     {
  48       *sh_deferred_function_attributes_tail
  49         = tree_cons (id, NULL_TREE, *sh_deferred_function_attributes_tail);
  50       sh_deferred_function_attributes_tail
  51         = &TREE_CHAIN (*sh_deferred_function_attributes_tail);
  52     }
  53 }
  54
  55 void
  56 sh_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  57 {
  58   sh_add_function_attribute ("interrupt_handler");
  59 }
  60
  61 void
  62 sh_pr_trapa (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  63 {
  64   sh_add_function_attribute ("trapa_handler");
  65 }
  66
  67 void
  68 sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  69 {
  70   sh_add_function_attribute ("nosave_low_regs");
  71 }
  72
  73 #define builtin_define(TXT) cpp_define (pfile, TXT)
  74 #define builtin_assert(TXT) cpp_assert (pfile, TXT)
  75
  76 /* Implement the TARGET_CPU_CPP_BUILTINS macro  */
  77 void
  78 sh_cpu_cpp_builtins (cpp_reader* pfile)
  79 {
  80   builtin_define ("__sh__");
  81   builtin_assert ("cpu=sh");
  82   builtin_assert ("machine=sh");
  83   switch ((int) sh_cpu)
  84     {
  85     case PROCESSOR_SH1:
  86       builtin_define ("__sh1__");
  87       builtin_define ("__SH1__");
  88       break;
  89     case PROCESSOR_SH2:
  90       builtin_define ("__sh2__");
  91       builtin_define ("__SH2__");
  92       break;
  93     case PROCESSOR_SH2E:
  94       builtin_define ("__SH2E__");
  95       break;
  96     case PROCESSOR_SH2A:
  97       builtin_define ("__SH2A__");
  98       if (TARGET_SH2A_DOUBLE)
  99         builtin_define (TARGET_FPU_SINGLE
 100                         ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
 101       else
 102         builtin_define (TARGET_FPU_ANY
 103                         ? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
 104       break;
 105     case PROCESSOR_SH3:
 106       builtin_define ("__sh3__");
 107       builtin_define ("__SH3__");
 108       if (TARGET_HARD_SH4)
 109         builtin_define ("__SH4_NOFPU__");
 110       break;
 111     case PROCESSOR_SH3E:
 112       builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
 113       break;
 114     case PROCESSOR_SH4:
 115       builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
 116       break;
 117     case PROCESSOR_SH4A: \
 118       builtin_define ("__SH4A__");
 119       builtin_define (TARGET_SH4
 120                       ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
 121                       : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
 122                       : "__SH4_NOFPU__");
 123       break;
 124     case PROCESSOR_SH5:
 125       {
 126         builtin_define_with_value ("__SH5__",
 127                                    TARGET_SHMEDIA64 ? "64" : "32", 0);
 128         builtin_define_with_value ("__SHMEDIA__",
 129                                    TARGET_SHMEDIA ? "1" : "0", 0);
 130         if (! TARGET_FPU_DOUBLE)
 131           builtin_define ("__SH4_NOFPU__");
 132       }
 133     }
 134   if (TARGET_FPU_ANY)
 135     builtin_define ("__SH_FPU_ANY__");
 136   if (TARGET_FPU_DOUBLE)
 137     builtin_define ("__SH_FPU_DOUBLE__");
 138   if (TARGET_HITACHI)
 139     builtin_define ("__HITACHI__");
 140   if (TARGET_FMOVD)
 141     builtin_define ("__FMOVD_ENABLED__");
 142   builtin_define (TARGET_LITTLE_ENDIAN
 143                   ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__");
 144
 145   cpp_define_formatted (pfile, "__SH_ATOMIC_MODEL_%s__",
 146                         selected_atomic_model ().cdef_name);
 147 }