gcc/config/sh/sh-c.c

   1 /* Pragma handling for GCC for Renesas / SuperH SH.
   2    Copyright (C) 1993-2015 Free Software Foundation, Inc.
   3    Contributed by Joern Rennecke <joern.rennecke@st.com>.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "target.h"
  25 #include "c-family/c-common.h"
  26 #include "tm_p.h"
  27 #include "stringpool.h"
  28 #include "attribs.h"
  29
  30 /* Handle machine specific pragmas to be semi-compatible with Renesas
  31    compiler.  */
  32
  33 /* Add ATTR to the attributes of the current function.  If there is no
  34    such function, save it to be added to the attributes of the next
  35    function.  */
  36 static void
  37 sh_add_function_attribute (const char *attr)
  38 {
  39   tree id = get_identifier (attr);
  40
  41   if (current_function_decl)
  42     decl_attributes (&current_function_decl,
  43                      tree_cons (id, NULL_TREE, NULL_TREE), 0);
  44   else
  45     {
  46       *sh_deferred_function_attributes_tail
  47         = tree_cons (id, NULL_TREE, *sh_deferred_function_attributes_tail);
  48       sh_deferred_function_attributes_tail
  49         = &TREE_CHAIN (*sh_deferred_function_attributes_tail);
  50     }
  51 }
  52
  53 void
  54 sh_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  55 {
  56   sh_add_function_attribute ("interrupt_handler");
  57 }
  58
  59 void
  60 sh_pr_trapa (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  61 {
  62   sh_add_function_attribute ("trapa_handler");
  63 }
  64
  65 void
  66 sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  67 {
  68   sh_add_function_attribute ("nosave_low_regs");
  69 }
  70
  71 #define builtin_define(TXT) cpp_define (pfile, TXT)
  72 #define builtin_assert(TXT) cpp_assert (pfile, TXT)
  73
  74 /* Implement the TARGET_CPU_CPP_BUILTINS macro  */
  75 void
  76 sh_cpu_cpp_builtins (cpp_reader* pfile)
  77 {
  78   builtin_define ("__sh__");
  79   builtin_assert ("cpu=sh");
  80   builtin_assert ("machine=sh");
  81   switch ((int) sh_cpu)
  82     {
  83     case PROCESSOR_SH1:
  84       builtin_define ("__sh1__");
  85       builtin_define ("__SH1__");
  86       break;
  87     case PROCESSOR_SH2:
  88       builtin_define ("__sh2__");
  89       builtin_define ("__SH2__");
  90       break;
  91     case PROCESSOR_SH2E:
  92       builtin_define ("__SH2E__");
  93       break;
  94     case PROCESSOR_SH2A:
  95       builtin_define ("__SH2A__");
  96       if (TARGET_SH2A_DOUBLE)
  97         builtin_define (TARGET_FPU_SINGLE
  98                         ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
  99       else
 100         builtin_define (TARGET_FPU_ANY
 101                         ? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
 102       break;
 103     case PROCESSOR_SH3:
 104       builtin_define ("__sh3__");
 105       builtin_define ("__SH3__");
 106       if (TARGET_HARD_SH4)
 107         builtin_define ("__SH4_NOFPU__");
 108       break;
 109     case PROCESSOR_SH3E:
 110       builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
 111       break;
 112     case PROCESSOR_SH4:
 113       builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
 114       break;
 115     case PROCESSOR_SH4A: \
 116       builtin_define ("__SH4A__");
 117       builtin_define (TARGET_SH4
 118                       ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
 119                       : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
 120                       : "__SH4_NOFPU__");
 121       break;
 122     case PROCESSOR_SH5:
 123       {
 124         builtin_define_with_value ("__SH5__",
 125                                    TARGET_SHMEDIA64 ? "64" : "32", 0);
 126         builtin_define_with_value ("__SHMEDIA__",
 127                                    TARGET_SHMEDIA ? "1" : "0", 0);
 128         if (! TARGET_FPU_DOUBLE)
 129           builtin_define ("__SH4_NOFPU__");
 130       }
 131     }
 132   if (TARGET_FPU_ANY)
 133     builtin_define ("__SH_FPU_ANY__");
 134   if (TARGET_FPU_DOUBLE)
 135     builtin_define ("__SH_FPU_DOUBLE__");
 136   if (TARGET_HITACHI)
 137     builtin_define ("__HITACHI__");
 138   if (TARGET_FMOVD)
 139     builtin_define ("__FMOVD_ENABLED__");
 140   if (TARGET_FDPIC)
 141     {
 142       builtin_define ("__SH_FDPIC__");
 143       builtin_define ("__FDPIC__");
 144     }
 145   builtin_define (TARGET_LITTLE_ENDIAN
 146                   ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__");
 147
 148   cpp_define_formatted (pfile, "__SH_ATOMIC_MODEL_%s__",
 149                         selected_atomic_model ().cdef_name);
 150 }