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 "tree.h"
  27 #include "stringpool.h"
  28 #include "attribs.h"
  29 #include "tm_p.h"
  30 #include "cpplib.h"
  31 #include "c-family/c-common.h"
  32 #include "target.h"
  33
  34 /* Handle machine specific pragmas to be semi-compatible with Renesas
  35    compiler.  */
  36
  37 /* Add ATTR to the attributes of the current function.  If there is no
  38    such function, save it to be added to the attributes of the next
  39    function.  */
  40 static void
  41 sh_add_function_attribute (const char *attr)
  42 {
  43   tree id = get_identifier (attr);
  44
  45   if (current_function_decl)
  46     decl_attributes (&current_function_decl,
  47                      tree_cons (id, NULL_TREE, NULL_TREE), 0);
  48   else
  49     {
  50       *sh_deferred_function_attributes_tail
  51         = tree_cons (id, NULL_TREE, *sh_deferred_function_attributes_tail);
  52       sh_deferred_function_attributes_tail
  53         = &TREE_CHAIN (*sh_deferred_function_attributes_tail);
  54     }
  55 }
  56
  57 void
  58 sh_pr_interrupt (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  59 {
  60   sh_add_function_attribute ("interrupt_handler");
  61 }
  62
  63 void
  64 sh_pr_trapa (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  65 {
  66   sh_add_function_attribute ("trapa_handler");
  67 }
  68
  69 void
  70 sh_pr_nosave_low_regs (struct cpp_reader *pfile ATTRIBUTE_UNUSED)
  71 {
  72   sh_add_function_attribute ("nosave_low_regs");
  73 }
  74
  75 #define builtin_define(TXT) cpp_define (pfile, TXT)
  76 #define builtin_assert(TXT) cpp_assert (pfile, TXT)
  77
  78 /* Implement the TARGET_CPU_CPP_BUILTINS macro  */
  79 void
  80 sh_cpu_cpp_builtins (cpp_reader* pfile)
  81 {
  82   builtin_define ("__sh__");
  83   builtin_assert ("cpu=sh");
  84   builtin_assert ("machine=sh");
  85   switch ((int) sh_cpu)
  86     {
  87     case PROCESSOR_SH1:
  88       builtin_define ("__sh1__");
  89       builtin_define ("__SH1__");
  90       break;
  91     case PROCESSOR_SH2:
  92       builtin_define ("__sh2__");
  93       builtin_define ("__SH2__");
  94       break;
  95     case PROCESSOR_SH2E:
  96       builtin_define ("__SH2E__");
  97       break;
  98     case PROCESSOR_SH2A:
  99       builtin_define ("__SH2A__");
 100       if (TARGET_SH2A_DOUBLE)
 101         builtin_define (TARGET_FPU_SINGLE
 102                         ? "__SH2A_SINGLE__" : "__SH2A_DOUBLE__");
 103       else
 104         builtin_define (TARGET_FPU_ANY
 105                         ? "__SH2A_SINGLE_ONLY__" : "__SH2A_NOFPU__");
 106       break;
 107     case PROCESSOR_SH3:
 108       builtin_define ("__sh3__");
 109       builtin_define ("__SH3__");
 110       if (TARGET_HARD_SH4)
 111         builtin_define ("__SH4_NOFPU__");
 112       break;
 113     case PROCESSOR_SH3E:
 114       builtin_define (TARGET_HARD_SH4 ? "__SH4_SINGLE_ONLY__" : "__SH3E__");
 115       break;
 116     case PROCESSOR_SH4:
 117       builtin_define (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__");
 118       break;
 119     case PROCESSOR_SH4A: \
 120       builtin_define ("__SH4A__");
 121       builtin_define (TARGET_SH4
 122                       ? (TARGET_FPU_SINGLE ? "__SH4_SINGLE__" : "__SH4__")
 123                       : TARGET_FPU_ANY ? "__SH4_SINGLE_ONLY__"
 124                       : "__SH4_NOFPU__");
 125       break;
 126     case PROCESSOR_SH5:
 127       {
 128         builtin_define_with_value ("__SH5__",
 129                                    TARGET_SHMEDIA64 ? "64" : "32", 0);
 130         builtin_define_with_value ("__SHMEDIA__",
 131                                    TARGET_SHMEDIA ? "1" : "0", 0);
 132         if (! TARGET_FPU_DOUBLE)
 133           builtin_define ("__SH4_NOFPU__");
 134       }
 135     }
 136   if (TARGET_FPU_ANY)
 137     builtin_define ("__SH_FPU_ANY__");
 138   if (TARGET_FPU_DOUBLE)
 139     builtin_define ("__SH_FPU_DOUBLE__");
 140   if (TARGET_HITACHI)
 141     builtin_define ("__HITACHI__");
 142   if (TARGET_FMOVD)
 143     builtin_define ("__FMOVD_ENABLED__");
 144   builtin_define (TARGET_LITTLE_ENDIAN
 145                   ? "__LITTLE_ENDIAN__" : "__BIG_ENDIAN__");
 146
 147   cpp_define_formatted (pfile, "__SH_ATOMIC_MODEL_%s__",
 148                         selected_atomic_model ().cdef_name);
 149 }