/* Subroutines for the C front end on the TMS320C[34]x
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/* Subroutines for the C front end on the TMS320C[34]x
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Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
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2007 Free Software Foundation, Inc.
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2007 Free Software Foundation, Inc.
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Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz)
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Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz)
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and Herman Ten Brugge (Haj.Ten.Brugge@net.HCC.nl).
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and Herman Ten Brugge (Haj.Ten.Brugge@net.HCC.nl).
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This file is part of GCC.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify
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GCC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3, or (at your option)
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the Free Software Foundation; either version 3, or (at your option)
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any later version.
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any later version.
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GCC is distributed in the hope that it will be useful,
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GCC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "config.h"
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#include "system.h"
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#include "system.h"
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#include "coretypes.h"
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#include "coretypes.h"
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#include "tm.h"
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#include "tm.h"
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#include "tree.h"
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#include "tree.h"
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#include "toplev.h"
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#include "toplev.h"
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#include "cpplib.h"
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#include "cpplib.h"
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#include "c-pragma.h"
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#include "c-pragma.h"
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#include "tm_p.h"
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#include "tm_p.h"
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static int c4x_parse_pragma (const char *, tree *, tree *);
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static int c4x_parse_pragma (const char *, tree *, tree *);
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/* Handle machine specific pragmas for compatibility with existing
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/* Handle machine specific pragmas for compatibility with existing
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compilers for the C3x/C4x.
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compilers for the C3x/C4x.
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pragma attribute
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pragma attribute
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----------------------------------------------------------
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----------------------------------------------------------
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CODE_SECTION(symbol,"section") section("section")
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CODE_SECTION(symbol,"section") section("section")
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DATA_SECTION(symbol,"section") section("section")
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DATA_SECTION(symbol,"section") section("section")
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FUNC_CANNOT_INLINE(function)
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FUNC_CANNOT_INLINE(function)
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FUNC_EXT_CALLED(function)
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FUNC_EXT_CALLED(function)
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FUNC_IS_PURE(function) const
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FUNC_IS_PURE(function) const
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FUNC_IS_SYSTEM(function)
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FUNC_IS_SYSTEM(function)
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FUNC_NEVER_RETURNS(function) noreturn
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FUNC_NEVER_RETURNS(function) noreturn
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FUNC_NO_GLOBAL_ASG(function)
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FUNC_NO_GLOBAL_ASG(function)
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FUNC_NO_IND_ASG(function)
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FUNC_NO_IND_ASG(function)
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INTERRUPT(function) interrupt
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INTERRUPT(function) interrupt
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*/
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*/
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/* Parse a C4x pragma, of the form ( function [, "section"] ) \n.
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/* Parse a C4x pragma, of the form ( function [, "section"] ) \n.
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FUNC is loaded with the IDENTIFIER_NODE of the function, SECT with
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FUNC is loaded with the IDENTIFIER_NODE of the function, SECT with
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the STRING_CST node of the string. If SECT is null, then this
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the STRING_CST node of the string. If SECT is null, then this
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pragma doesn't take a section string. Returns 0 for a good pragma,
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pragma doesn't take a section string. Returns 0 for a good pragma,
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-1 for a malformed pragma. */
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-1 for a malformed pragma. */
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#define BAD(gmsgid, arg) \
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#define BAD(gmsgid, arg) \
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do { warning (OPT_Wpragmas, gmsgid, arg); return -1; } while (0)
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do { warning (OPT_Wpragmas, gmsgid, arg); return -1; } while (0)
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static int
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static int
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c4x_parse_pragma (name, func, sect)
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c4x_parse_pragma (name, func, sect)
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const char *name;
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const char *name;
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tree *func;
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tree *func;
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tree *sect;
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tree *sect;
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{
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{
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tree f, s, x;
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tree f, s, x;
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if (pragma_lex (&x) != CPP_OPEN_PAREN)
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if (pragma_lex (&x) != CPP_OPEN_PAREN)
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BAD ("missing '(' after '#pragma %s' - ignored", name);
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BAD ("missing '(' after '#pragma %s' - ignored", name);
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if (pragma_lex (&f) != CPP_NAME)
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if (pragma_lex (&f) != CPP_NAME)
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BAD ("missing function name in '#pragma %s' - ignored", name);
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BAD ("missing function name in '#pragma %s' - ignored", name);
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if (sect)
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if (sect)
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{
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{
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if (pragma_lex (&x) != CPP_COMMA)
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if (pragma_lex (&x) != CPP_COMMA)
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BAD ("malformed '#pragma %s' - ignored", name);
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BAD ("malformed '#pragma %s' - ignored", name);
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if (pragma_lex (&s) != CPP_STRING)
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if (pragma_lex (&s) != CPP_STRING)
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BAD ("missing section name in '#pragma %s' - ignored", name);
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BAD ("missing section name in '#pragma %s' - ignored", name);
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*sect = s;
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*sect = s;
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}
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}
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if (pragma_lex (&x) != CPP_CLOSE_PAREN)
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if (pragma_lex (&x) != CPP_CLOSE_PAREN)
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BAD ("missing ')' for '#pragma %s' - ignored", name);
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BAD ("missing ')' for '#pragma %s' - ignored", name);
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if (pragma_lex (&x) != CPP_EOF)
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if (pragma_lex (&x) != CPP_EOF)
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warning (OPT_Wpragmas, "junk at end of '#pragma %s'", name);
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warning (OPT_Wpragmas, "junk at end of '#pragma %s'", name);
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*func = f;
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*func = f;
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return 0;
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return 0;
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}
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}
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void
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void
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c4x_pr_CODE_SECTION (pfile)
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c4x_pr_CODE_SECTION (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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tree func, sect;
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tree func, sect;
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if (c4x_parse_pragma ("CODE_SECTION", &func, §))
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if (c4x_parse_pragma ("CODE_SECTION", &func, §))
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return;
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return;
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code_tree = chainon (code_tree,
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code_tree = chainon (code_tree,
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build_tree_list (func,
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build_tree_list (func,
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build_tree_list (NULL_TREE, sect)));
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build_tree_list (NULL_TREE, sect)));
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}
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}
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void
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void
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c4x_pr_DATA_SECTION (pfile)
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c4x_pr_DATA_SECTION (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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tree func, sect;
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tree func, sect;
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if (c4x_parse_pragma ("DATA_SECTION", &func, §))
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if (c4x_parse_pragma ("DATA_SECTION", &func, §))
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return;
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return;
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data_tree = chainon (data_tree,
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data_tree = chainon (data_tree,
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build_tree_list (func,
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build_tree_list (func,
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build_tree_list (NULL_TREE, sect)));
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build_tree_list (NULL_TREE, sect)));
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}
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}
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void
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void
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c4x_pr_FUNC_IS_PURE (pfile)
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c4x_pr_FUNC_IS_PURE (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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tree func;
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tree func;
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if (c4x_parse_pragma ("FUNC_IS_PURE", &func, 0))
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if (c4x_parse_pragma ("FUNC_IS_PURE", &func, 0))
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return;
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return;
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pure_tree = chainon (pure_tree, build_tree_list (func, NULL_TREE));
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pure_tree = chainon (pure_tree, build_tree_list (func, NULL_TREE));
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}
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}
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void
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void
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c4x_pr_FUNC_NEVER_RETURNS (pfile)
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c4x_pr_FUNC_NEVER_RETURNS (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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tree func;
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tree func;
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if (c4x_parse_pragma ("FUNC_NEVER_RETURNS", &func, 0))
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if (c4x_parse_pragma ("FUNC_NEVER_RETURNS", &func, 0))
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return;
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return;
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noreturn_tree = chainon (noreturn_tree, build_tree_list (func, NULL_TREE));
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noreturn_tree = chainon (noreturn_tree, build_tree_list (func, NULL_TREE));
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}
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}
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void
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void
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c4x_pr_INTERRUPT (pfile)
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c4x_pr_INTERRUPT (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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tree func;
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tree func;
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if (c4x_parse_pragma ("INTERRUPT", &func, 0))
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if (c4x_parse_pragma ("INTERRUPT", &func, 0))
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return;
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return;
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interrupt_tree = chainon (interrupt_tree, build_tree_list (func, NULL_TREE));
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interrupt_tree = chainon (interrupt_tree, build_tree_list (func, NULL_TREE));
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}
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}
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/* Used for FUNC_CANNOT_INLINE, FUNC_EXT_CALLED, FUNC_IS_SYSTEM,
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/* Used for FUNC_CANNOT_INLINE, FUNC_EXT_CALLED, FUNC_IS_SYSTEM,
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FUNC_NO_GLOBAL_ASG, and FUNC_NO_IND_ASG. */
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FUNC_NO_GLOBAL_ASG, and FUNC_NO_IND_ASG. */
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void
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void
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c4x_pr_ignored (pfile)
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c4x_pr_ignored (pfile)
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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cpp_reader *pfile ATTRIBUTE_UNUSED;
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{
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{
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}
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}
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