/* Routines for GCC for ARM/pe.
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/* Routines for GCC for ARM/pe.
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Copyright (C) 1995, 1996, 2000, 2001, 2002, 2004, 2005, 2007
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Copyright (C) 1995, 1996, 2000, 2001, 2002, 2004, 2005, 2007
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Free Software Foundation, Inc.
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Free Software Foundation, Inc.
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Contributed by Doug Evans (dje@cygnus.com).
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Contributed by Doug Evans (dje@cygnus.com).
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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 it
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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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 "rtl.h"
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#include "rtl.h"
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#include "output.h"
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#include "output.h"
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#include "flags.h"
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#include "flags.h"
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#include "tree.h"
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#include "tree.h"
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#include "expr.h"
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#include "expr.h"
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#include "toplev.h"
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#include "toplev.h"
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#include "tm_p.h"
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#include "tm_p.h"
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extern int current_function_anonymous_args;
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extern int current_function_anonymous_args;
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/* Return nonzero if DECL is a dllexport'd object. */
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/* Return nonzero if DECL is a dllexport'd object. */
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tree current_class_type; /* FIXME */
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tree current_class_type; /* FIXME */
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int
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int
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arm_dllexport_p (decl)
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arm_dllexport_p (decl)
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tree decl;
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tree decl;
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{
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{
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tree exp;
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tree exp;
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if (TREE_CODE (decl) != VAR_DECL
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if (TREE_CODE (decl) != VAR_DECL
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&& TREE_CODE (decl) != FUNCTION_DECL)
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&& TREE_CODE (decl) != FUNCTION_DECL)
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return 0;
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return 0;
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exp = lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl));
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exp = lookup_attribute ("dllexport", DECL_ATTRIBUTES (decl));
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if (exp)
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if (exp)
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return 1;
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return 1;
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return 0;
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return 0;
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}
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}
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/* Return nonzero if DECL is a dllimport'd object. */
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/* Return nonzero if DECL is a dllimport'd object. */
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int
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int
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arm_dllimport_p (decl)
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arm_dllimport_p (decl)
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tree decl;
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tree decl;
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{
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{
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tree imp;
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tree imp;
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if (TREE_CODE (decl) == FUNCTION_DECL
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if (TREE_CODE (decl) == FUNCTION_DECL
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&& TARGET_NOP_FUN_DLLIMPORT)
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&& TARGET_NOP_FUN_DLLIMPORT)
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return 0;
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return 0;
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if (TREE_CODE (decl) != VAR_DECL
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if (TREE_CODE (decl) != VAR_DECL
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&& TREE_CODE (decl) != FUNCTION_DECL)
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&& TREE_CODE (decl) != FUNCTION_DECL)
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return 0;
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return 0;
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imp = lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl));
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imp = lookup_attribute ("dllimport", DECL_ATTRIBUTES (decl));
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if (imp)
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if (imp)
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return 1;
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return 1;
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return 0;
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return 0;
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}
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}
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/* Return nonzero if SYMBOL is marked as being dllexport'd. */
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/* Return nonzero if SYMBOL is marked as being dllexport'd. */
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int
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int
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arm_dllexport_name_p (symbol)
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arm_dllexport_name_p (symbol)
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const char * symbol;
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const char * symbol;
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{
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{
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return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'e' && symbol[2] == '.';
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return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'e' && symbol[2] == '.';
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}
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}
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/* Return nonzero if SYMBOL is marked as being dllimport'd. */
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/* Return nonzero if SYMBOL is marked as being dllimport'd. */
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int
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int
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arm_dllimport_name_p (symbol)
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arm_dllimport_name_p (symbol)
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const char * symbol;
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const char * symbol;
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{
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{
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return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'i' && symbol[2] == '.';
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return symbol[0] == ARM_PE_FLAG_CHAR && symbol[1] == 'i' && symbol[2] == '.';
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}
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}
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/* Mark a DECL as being dllexport'd.
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/* Mark a DECL as being dllexport'd.
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Note that we override the previous setting (e.g.: dllimport). */
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Note that we override the previous setting (e.g.: dllimport). */
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void
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void
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arm_mark_dllexport (decl)
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arm_mark_dllexport (decl)
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tree decl;
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tree decl;
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{
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{
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const char * oldname;
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const char * oldname;
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char * newname;
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char * newname;
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rtx rtlname;
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rtx rtlname;
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tree idp;
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tree idp;
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rtlname = XEXP (DECL_RTL (decl), 0);
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rtlname = XEXP (DECL_RTL (decl), 0);
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if (GET_CODE (rtlname) == MEM)
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if (GET_CODE (rtlname) == MEM)
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rtlname = XEXP (rtlname, 0);
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rtlname = XEXP (rtlname, 0);
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gcc_assert (GET_CODE (rtlname) == SYMBOL_REF);
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gcc_assert (GET_CODE (rtlname) == SYMBOL_REF);
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oldname = XSTR (rtlname, 0);
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oldname = XSTR (rtlname, 0);
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if (arm_dllimport_name_p (oldname))
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if (arm_dllimport_name_p (oldname))
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oldname += 9;
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oldname += 9;
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else if (arm_dllexport_name_p (oldname))
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else if (arm_dllexport_name_p (oldname))
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return; /* already done */
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return; /* already done */
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newname = alloca (strlen (oldname) + 4);
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newname = alloca (strlen (oldname) + 4);
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sprintf (newname, "%ce.%s", ARM_PE_FLAG_CHAR, oldname);
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sprintf (newname, "%ce.%s", ARM_PE_FLAG_CHAR, oldname);
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/* We pass newname through get_identifier to ensure it has a unique
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/* We pass newname through get_identifier to ensure it has a unique
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address. RTL processing can sometimes peek inside the symbol ref
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address. RTL processing can sometimes peek inside the symbol ref
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and compare the string's addresses to see if two symbols are
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and compare the string's addresses to see if two symbols are
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identical. */
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identical. */
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/* ??? At least I think that's why we do this. */
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/* ??? At least I think that's why we do this. */
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idp = get_identifier (newname);
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idp = get_identifier (newname);
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XEXP (DECL_RTL (decl), 0) =
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XEXP (DECL_RTL (decl), 0) =
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gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
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gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
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}
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}
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/* Mark a DECL as being dllimport'd. */
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/* Mark a DECL as being dllimport'd. */
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void
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void
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arm_mark_dllimport (decl)
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arm_mark_dllimport (decl)
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tree decl;
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tree decl;
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{
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{
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const char * oldname;
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const char * oldname;
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char * newname;
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char * newname;
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tree idp;
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tree idp;
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rtx rtlname, newrtl;
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rtx rtlname, newrtl;
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rtlname = XEXP (DECL_RTL (decl), 0);
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rtlname = XEXP (DECL_RTL (decl), 0);
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if (GET_CODE (rtlname) == MEM)
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if (GET_CODE (rtlname) == MEM)
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rtlname = XEXP (rtlname, 0);
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rtlname = XEXP (rtlname, 0);
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gcc_assert (GET_CODE (rtlname) == SYMBOL_REF);
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gcc_assert (GET_CODE (rtlname) == SYMBOL_REF);
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oldname = XSTR (rtlname, 0);
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oldname = XSTR (rtlname, 0);
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gcc_assert (!arm_dllexport_name_p (oldname));
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gcc_assert (!arm_dllexport_name_p (oldname));
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if (arm_dllimport_name_p (oldname))
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if (arm_dllimport_name_p (oldname))
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return; /* already done */
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return; /* already done */
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/* ??? One can well ask why we're making these checks here,
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/* ??? One can well ask why we're making these checks here,
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and that would be a good question. */
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and that would be a good question. */
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/* Imported variables can't be initialized. */
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/* Imported variables can't be initialized. */
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if (TREE_CODE (decl) == VAR_DECL
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if (TREE_CODE (decl) == VAR_DECL
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&& !DECL_VIRTUAL_P (decl)
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&& !DECL_VIRTUAL_P (decl)
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&& DECL_INITIAL (decl))
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&& DECL_INITIAL (decl))
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{
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{
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error ("initialized variable %q+D is marked dllimport", decl);
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error ("initialized variable %q+D is marked dllimport", decl);
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return;
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return;
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}
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}
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/* Nor can they be static. */
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/* Nor can they be static. */
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if (TREE_CODE (decl) == VAR_DECL
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if (TREE_CODE (decl) == VAR_DECL
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/* ??? Is this test for vtables needed? */
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/* ??? Is this test for vtables needed? */
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&& !DECL_VIRTUAL_P (decl)
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&& !DECL_VIRTUAL_P (decl)
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&& 0 /*???*/)
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&& 0 /*???*/)
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{
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{
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error ("static variable %q+D is marked dllimport", decl);
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error ("static variable %q+D is marked dllimport", decl);
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return;
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return;
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}
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}
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/* `extern' needn't be specified with dllimport.
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/* `extern' needn't be specified with dllimport.
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Specify `extern' now and hope for the best. Sigh. */
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Specify `extern' now and hope for the best. Sigh. */
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if (TREE_CODE (decl) == VAR_DECL
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if (TREE_CODE (decl) == VAR_DECL
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/* ??? Is this test for vtables needed? */
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/* ??? Is this test for vtables needed? */
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&& !DECL_VIRTUAL_P (decl))
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&& !DECL_VIRTUAL_P (decl))
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{
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{
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DECL_EXTERNAL (decl) = 1;
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DECL_EXTERNAL (decl) = 1;
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TREE_PUBLIC (decl) = 1;
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TREE_PUBLIC (decl) = 1;
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}
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}
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newname = alloca (strlen (oldname) + 11);
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newname = alloca (strlen (oldname) + 11);
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sprintf (newname, "%ci.__imp_%s", ARM_PE_FLAG_CHAR, oldname);
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sprintf (newname, "%ci.__imp_%s", ARM_PE_FLAG_CHAR, oldname);
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/* We pass newname through get_identifier to ensure it has a unique
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/* We pass newname through get_identifier to ensure it has a unique
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address. RTL processing can sometimes peek inside the symbol ref
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address. RTL processing can sometimes peek inside the symbol ref
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and compare the string's addresses to see if two symbols are
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and compare the string's addresses to see if two symbols are
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identical. */
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identical. */
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/* ??? At least I think that's why we do this. */
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/* ??? At least I think that's why we do this. */
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idp = get_identifier (newname);
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idp = get_identifier (newname);
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newrtl = gen_rtx_MEM (Pmode,
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newrtl = gen_rtx_MEM (Pmode,
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gen_rtx_SYMBOL_REF (Pmode,
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gen_rtx_SYMBOL_REF (Pmode,
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IDENTIFIER_POINTER (idp)));
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IDENTIFIER_POINTER (idp)));
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XEXP (DECL_RTL (decl), 0) = newrtl;
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XEXP (DECL_RTL (decl), 0) = newrtl;
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}
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}
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void
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void
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arm_pe_encode_section_info (decl, rtl, first)
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arm_pe_encode_section_info (decl, rtl, first)
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tree decl;
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tree decl;
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rtx rtl;
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rtx rtl;
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int first ATTRIBUTE_UNUSED;
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int first ATTRIBUTE_UNUSED;
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{
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{
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/* This bit is copied from arm_encode_section_info. */
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/* This bit is copied from arm_encode_section_info. */
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if (optimize > 0 && TREE_CONSTANT (decl))
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if (optimize > 0 && TREE_CONSTANT (decl))
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SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1;
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SYMBOL_REF_FLAG (XEXP (rtl, 0)) = 1;
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/* Mark the decl so we can tell from the rtl whether the object is
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/* Mark the decl so we can tell from the rtl whether the object is
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dllexport'd or dllimport'd. */
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dllexport'd or dllimport'd. */
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if (arm_dllexport_p (decl))
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if (arm_dllexport_p (decl))
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arm_mark_dllexport (decl);
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arm_mark_dllexport (decl);
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else if (arm_dllimport_p (decl))
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else if (arm_dllimport_p (decl))
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arm_mark_dllimport (decl);
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arm_mark_dllimport (decl);
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/* It might be that DECL has already been marked as dllimport, but a
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/* It might be that DECL has already been marked as dllimport, but a
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subsequent definition nullified that. The attribute is gone but
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subsequent definition nullified that. The attribute is gone but
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DECL_RTL still has @i.__imp_foo. We need to remove that. */
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DECL_RTL still has @i.__imp_foo. We need to remove that. */
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else if ((TREE_CODE (decl) == FUNCTION_DECL
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else if ((TREE_CODE (decl) == FUNCTION_DECL
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|| TREE_CODE (decl) == VAR_DECL)
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|| TREE_CODE (decl) == VAR_DECL)
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&& DECL_RTL (decl) != NULL_RTX
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&& DECL_RTL (decl) != NULL_RTX
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&& GET_CODE (DECL_RTL (decl)) == MEM
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&& GET_CODE (DECL_RTL (decl)) == MEM
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&& GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM
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&& GET_CODE (XEXP (DECL_RTL (decl), 0)) == MEM
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&& GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 0)) == SYMBOL_REF
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&& GET_CODE (XEXP (XEXP (DECL_RTL (decl), 0), 0)) == SYMBOL_REF
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&& arm_dllimport_name_p (XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0)))
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&& arm_dllimport_name_p (XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0)))
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{
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{
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const char *oldname = XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0);
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const char *oldname = XSTR (XEXP (XEXP (DECL_RTL (decl), 0), 0), 0);
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tree idp = get_identifier (oldname + 9);
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tree idp = get_identifier (oldname + 9);
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rtx newrtl = gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
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rtx newrtl = gen_rtx_SYMBOL_REF (Pmode, IDENTIFIER_POINTER (idp));
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XEXP (DECL_RTL (decl), 0) = newrtl;
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XEXP (DECL_RTL (decl), 0) = newrtl;
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/* We previously set TREE_PUBLIC and DECL_EXTERNAL.
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/* We previously set TREE_PUBLIC and DECL_EXTERNAL.
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??? We leave these alone for now. */
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??? We leave these alone for now. */
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}
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}
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}
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}
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void
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void
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arm_pe_unique_section (decl, reloc)
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arm_pe_unique_section (decl, reloc)
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tree decl;
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tree decl;
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int reloc;
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int reloc;
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{
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{
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int len;
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int len;
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const char * name;
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const char * name;
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char * string;
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char * string;
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const char * prefix;
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const char * prefix;
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
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name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
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name = arm_strip_name_encoding (name);
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name = arm_strip_name_encoding (name);
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/* The object is put in, for example, section .text$foo.
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/* The object is put in, for example, section .text$foo.
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The linker will then ultimately place them in .text
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The linker will then ultimately place them in .text
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(everything from the $ on is stripped). */
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(everything from the $ on is stripped). */
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if (TREE_CODE (decl) == FUNCTION_DECL)
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if (TREE_CODE (decl) == FUNCTION_DECL)
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prefix = ".text$";
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prefix = ".text$";
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else if (decl_readonly_section (decl, reloc))
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else if (decl_readonly_section (decl, reloc))
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prefix = ".rdata$";
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prefix = ".rdata$";
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else
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else
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prefix = ".data$";
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prefix = ".data$";
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len = strlen (name) + strlen (prefix);
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len = strlen (name) + strlen (prefix);
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string = alloca (len + 1);
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string = alloca (len + 1);
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sprintf (string, "%s%s", prefix, name);
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sprintf (string, "%s%s", prefix, name);
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DECL_SECTION_NAME (decl) = build_string (len, string);
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DECL_SECTION_NAME (decl) = build_string (len, string);
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}
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}
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