gnu/dist/gcc4/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 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 2, 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 COPYING.  If not, write to
  20 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  21 Boston, MA 02110-1301, USA.  */
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "tree.h"
  28 #include "tm_p.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 }