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 "tm.h"
  25 #include "alias.h"
  26 #include "symtab.h"
  27 #include "tree.h"
  28 #include "stringpool.h"
  29 #include "attribs.h"
  30 #include "tm_p.h"
  31 #include "cpplib.h"
  32 #include "c-family/c-common.h"
  33 #include "target.h"
  34
  35 /* Handle machine specific pragmas to be semi-compatible with Renesas
  36    compiler.  */
  37
  38 /* Add ATTR to the attributes of the current function.  If there is no
  39    such function, save it to be added to the attributes of the next
  40    function.  */
  41 static void
  42 sh_add_function_attribute (const char *attr)
  43 {
  44   tree id = get_identifier (attr);
  45
  46   if (current_function_decl)
  47     decl_attributes (&current_function_decl,
  48                      tree_cons (id, NULL_TREE, NULL_TREE), 0);
  49   else
  50     {
  51       *sh_deferred_function_attributes_tail
  52         = tree_cons (id, NULL_TREE, *sh_deferred_function_attributes_tail);
  53       sh_deferred_function_attributes_tail
  54         = &TREE_CHAIN (*sh_deferred_function_attributes_tail);
  55     }
  56 }
  57
  58 void
  59 sh_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  60 {
  61   sh_add_function_attribute ("interrupt_handler");
  62 }
  63
  64 void
  65 sh_pr_trapa (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  66 {
  67   sh_add_function_attribute ("trapa_handler");
  68 }
  69
  70 void
  71 sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  72 {
  73   sh_add_function_attribute ("nosave_low_regs");
  74 }
  75
  76 #define builtin_define(TXT) cpp_define (pfile, TXT)
  77 #define builtin_assert(TXT) cpp_assert (pfile, TXT)
  78
  79 /* Implement the TARGET_CPU_CPP_BUILTINS macro  */
  80 void
  81 sh_cpu_cpp_builtins (cpp_reader* pfile)
  82 {
  83   builtin_define ("__sh__");
  84   builtin_assert ("cpu=sh");
  85   builtin_assert ("machine=sh");
  86   switch ((int) sh_cpu)
  87     {
  88     case PROCESSOR_SH1:
  89       builtin_define ("__sh1__");
  90       builtin_define ("__SH1__");
  91       break;
  92     case PROCESSOR_SH2:
  93       builtin_define ("__sh2__");
  94       builtin_define ("__SH2__");
  95       break;
  96     case PROCESSOR_SH2E:
  97       builtin_define ("__SH2E__");
  98       break;
  99     case PROCESSOR_SH2A:
 100       builtin_define ("__SH2A__");
 101       if (TARGET_SH2A_DOUBLE)
 102         builtin_define (TARGET_FPU_SINGLE
 103                         ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
 104       else
 105         builtin_define (TARGET_FPU_ANY
 106                         ? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
 107       break;
 108     case PROCESSOR_SH3:
 109       builtin_define ("__sh3__");
 110       builtin_define ("__SH3__");
 111       if (TARGET_HARD_SH4)
 112         builtin_define ("__SH4_NOFPU__");
 113       break;
 114     case PROCESSOR_SH3E:
 115       builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
 116       break;
 117     case PROCESSOR_SH4:
 118       builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
 119       break;
 120     case PROCESSOR_SH4A: \
 121       builtin_define ("__SH4A__");
 122       builtin_define (TARGET_SH4
 123                       ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
 124                       : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
 125                       : "__SH4_NOFPU__");
 126       break;
 127     case PROCESSOR_SH5:
 128       {
 129         builtin_define_with_value ("__SH5__",
 130                                    TARGET_SHMEDIA64 ? "64" : "32", 0);
 131         builtin_define_with_value ("__SHMEDIA__",
 132                                    TARGET_SHMEDIA ? "1" : "0", 0);
 133         if (! TARGET_FPU_DOUBLE)
 134           builtin_define ("__SH4_NOFPU__");
 135       }
 136     }
 137   if (TARGET_FPU_ANY)
 138     builtin_define ("__SH_FPU_ANY__");
 139   if (TARGET_FPU_DOUBLE)
 140     builtin_define ("__SH_FPU_DOUBLE__");
 141   if (TARGET_HITACHI)
 142     builtin_define ("__HITACHI__");
 143   if (TARGET_FMOVD)
 144     builtin_define ("__FMOVD_ENABLED__");
 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 }