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Diffstat (limited to 'contrib/gcc/config/i386/winnt-cxx.c')
| -rw-r--r-- | contrib/gcc/config/i386/winnt-cxx.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/contrib/gcc/config/i386/winnt-cxx.c b/contrib/gcc/config/i386/winnt-cxx.c deleted file mode 100644 index 6123ebbcdc39..000000000000 --- a/contrib/gcc/config/i386/winnt-cxx.c +++ /dev/null @@ -1,167 +0,0 @@ -/* Target support for C++ classes on Windows. - Contributed by Danny Smith (dannysmith@users.sourceforge.net) - 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 (OPT_Wattributes, "%q+D redeclared without dllimport attribute: " - "previous dllimport ignored", decl); -#ifdef PE_DLL_DEBUG - if (decl == CLASSTYPE_KEY_METHOD (DECL_CONTEXT (decl))) - warning (OPT_Wattributes, "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. */ -} |