Revision: 124164
Author: dpatel
Date: 2007-02-21 13:13:42 -0800 (Wed, 21 Feb 2007)
Log Message:
-----------
Backport mingw32 support from FSF GCC mainline.
Patch by Anton Korobeynikov.
Added Paths:
-----------
apple-local/branches/llvm/gcc/config/i386/winnt-cxx.c
apple-local/branches/llvm/gcc/config/i386/winnt-stubs.c
Added: apple-local/branches/llvm/gcc/config/i386/winnt-cxx.c
===================================================================
--- apple-local/branches/llvm/gcc/config/i386/winnt-cxx.c
(rev 0)
+++ apple-local/branches/llvm/gcc/config/i386/winnt-cxx.c 2007-02-21
21:13:42 UTC (rev 124164)
@@ -0,0 +1,167 @@
+/* Target support for C++ classes on Windows.
+ Contributed by Danny Smith ([EMAIL PROTECTED])
+ Copyright (C) 2005
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to
+the Free Software Foundation, 51 Franklin Street, Fifth Floor,
+Boston, MA 02110-1301, USA. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "rtl.h"
+#include "regs.h"
+#include "hard-reg-set.h"
+#include "output.h"
+#include "tree.h"
+#include "cp/cp-tree.h" /* this is why we're a separate module */
+#include "flags.h"
+#include "tm_p.h"
+#include "toplev.h"
+#include "hashtab.h"
+
+bool
+i386_pe_type_dllimport_p (tree decl)
+{
+ gcc_assert (TREE_CODE (decl) == VAR_DECL
+ || TREE_CODE (decl) == FUNCTION_DECL);
+
+ if (TARGET_NOP_FUN_DLLIMPORT && TREE_CODE (decl) == FUNCTION_DECL)
+ return false;
+
+ /* We ignore the dllimport attribute for inline member functions.
+ This differs from MSVC behavior which treats it like GNUC
+ 'extern inline' extension. Also ignore for template
+ instantiations with linkonce semantics and artificial methods. */
+ if (TREE_CODE (decl) == FUNCTION_DECL
+ && (DECL_DECLARED_INLINE_P (decl)
+ || DECL_TEMPLATE_INSTANTIATION (decl)
+ || DECL_ARTIFICIAL (decl)))
+ return false;
+
+ /* Since we can't treat a pointer to a dllimport'd symbol as a
+ constant address, we turn off the attribute on C++ virtual
+ methods to allow creation of vtables using thunks. */
+ else if (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE
+ && DECL_VIRTUAL_P (decl))
+ {
+ /* Even though we ignore the attribute from the start, warn if we later
see
+ an out-of class definition, as we do for other member functions in
+ tree.c:merge_dllimport_decl_attributes. If this is the key method,
the
+ definition may affect the import-export status of vtables, depending
+ on how we handle MULTIPLE_SYMBOL_SPACES in cp/decl2.c. */
+ if (DECL_INITIAL (decl))
+ {
+ warning ("%q+D redeclared without dllimport attribute: "
+ "previous dllimport ignored", decl);
+#ifdef PE_DLL_DEBUG
+ if (decl == CLASSTYPE_KEY_METHOD (DECL_CONTEXT (decl)))
+ warning ("key method %q+D of dllimport'd class defined"
+ decl);
+#endif
+ }
+ return false;
+ }
+
+ /* Don't mark defined functions as dllimport. This code will only be
+ reached if we see a non-inline function defined out-of-class. */
+ else if (TREE_CODE (decl) == FUNCTION_DECL
+ && (DECL_INITIAL (decl)))
+ return false;
+
+ /* Don't allow definitions of static data members in dllimport class,
+ If vtable data is marked as DECL_EXTERNAL, import it; otherwise just
+ ignore the class attribute. */
+ else if (TREE_CODE (decl) == VAR_DECL
+ && TREE_STATIC (decl) && TREE_PUBLIC (decl)
+ && !DECL_EXTERNAL (decl))
+ {
+ if (!DECL_VIRTUAL_P (decl))
+ error ("definition of static data member %q+D of "
+ "dllimport'd class", decl);
+ return false;
+ }
+
+ return true;
+}
+
+
+bool
+i386_pe_type_dllexport_p (tree decl)
+{
+ gcc_assert (TREE_CODE (decl) == VAR_DECL
+ || TREE_CODE (decl) == FUNCTION_DECL);
+ /* Avoid exporting compiler-generated default dtors and copy ctors.
+ The only artificial methods that need to be exported are virtual
+ and non-virtual thunks. */
+ if (TREE_CODE (TREE_TYPE (decl)) == METHOD_TYPE
+ && DECL_ARTIFICIAL (decl) && !DECL_THUNK_P (decl))
+ return false;
+ return true;
+}
+
+static inline void maybe_add_dllimport (tree decl)
+{
+ if (i386_pe_type_dllimport_p (decl))
+ DECL_DLLIMPORT_P (decl) = 1;
+}
+
+void
+i386_pe_adjust_class_at_definition (tree t)
+{
+ tree member;
+
+ gcc_assert (CLASS_TYPE_P (t));
+
+ /* We only look at dllimport. The only thing that dllexport does is
+ add stuff to a '.drectiv' section at end-of-file, so no need to do
+ anything for dllexport'd classes until we generate RTL. */
+ if (lookup_attribute ("dllimport", TYPE_ATTRIBUTES (t)) == NULL_TREE)
+ return;
+
+ /* We don't actually add the attribute to the decl, just set the flag
+ that signals that the address of this symbol is not a compile-time
+ constant. Any subsequent out-of-class declaration of members wil
+ cause the DECL_DLLIMPORT_P flag to be unset.
+ (See tree.c: merge_dllimport_decl_attributes).
+ That is just right since out-of class declarations can only be a
+ definition. We recheck the class members at RTL generation to
+ emit warnings if this has happened. Definition of static data member
+ of dllimport'd class always causes an error (as per MS compiler).
+ */
+
+ /* Check static VAR_DECL's. */
+ for (member = TYPE_FIELDS (t); member; member = TREE_CHAIN (member))
+ if (TREE_CODE (member) == VAR_DECL)
+ maybe_add_dllimport (member);
+
+ /* Check FUNCTION_DECL's. */
+ for (member = TYPE_METHODS (t); member; member = TREE_CHAIN (member))
+ if (TREE_CODE (member) == FUNCTION_DECL)
+ maybe_add_dllimport (member);
+
+ /* Check vtables */
+ for (member = CLASSTYPE_VTABLES (t); member; member = TREE_CHAIN (member))
+ if (TREE_CODE (member) == VAR_DECL)
+ maybe_add_dllimport (member);
+
+/* We leave typeinfo tables alone. We can't mark TI objects as
+ dllimport, since the address of a secondary VTT may be needed
+ for static initialization of a primary VTT. VTT's of
+ dllimport'd classes should always be link-once COMDAT. */
+}
Added: apple-local/branches/llvm/gcc/config/i386/winnt-stubs.c
===================================================================
--- apple-local/branches/llvm/gcc/config/i386/winnt-stubs.c
(rev 0)
+++ apple-local/branches/llvm/gcc/config/i386/winnt-stubs.c 2007-02-21
21:13:42 UTC (rev 124164)
@@ -0,0 +1,53 @@
+/* Dummy subroutines for language-specific support on Windows.
+ Contributed by Danny Smith ([EMAIL PROTECTED])
+ Copyright (C) 2005
+ Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA. */
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
+#include "rtl.h"
+#include "regs.h"
+#include "hard-reg-set.h"
+#include "output.h"
+#include "tree.h"
+#include "flags.h"
+#include "tm_p.h"
+#include "toplev.h"
+#include "hashtab.h"
+
+bool
+i386_pe_type_dllimport_p (tree decl ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+
+bool
+i386_pe_type_dllexport_p (tree decl ATTRIBUTE_UNUSED)
+{
+ return false;
+}
+
+
+void
+i386_pe_adjust_class_at_definition (tree t ATTRIBUTE_UNUSED)
+{ }
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