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array_type_info.cc: Likewise. 

* libsupc++/array_type_info.cc: Likewise.
	* libsupc++/bad_cast.cc: Likewise.
	* libsupc++/bad_typeid.cc: Likewise.
	* libsupc++/class_type_info.cc: Likewise.
	* libsupc++/dyncast.cc: Likewise.
	* libsupc++/enum_type_info.cc: Likewise.
	* libsupc++/function_type_info.cc: Likewise.
	* libsupc++/fundamental_type_info.cc: Likewise.
	* libsupc++/pbase_type_info.cc: Likewise.
	* libsupc++/pmem_type_info.cc: Likewise.
	* libsupc++/pointer_type_info.cc: Likewise.
	* libsupc++/si_class_type_info.cc: Likewise.
	* libsupc++/vmi_class_type_info.cc: Likewise.
	* libsupc++/tinfo.h: Move inline type_info functions here.
	* libsupc++/tinfo.cc: Separate type_info classes into their own
	files.
	* libsupc++/tinfo2.cc: Likewise.
	* Makefile.am (sources): Mention new files.
	* Makefile.in: Regenerated.

From-SVN: r123042
This commit is contained in:
Mark Mitchell 2007-03-18 22:35:39 +00:00 committed by Mark Mitchell
parent d4f2728ad9
commit bd994a48f6
19 changed files with 1307 additions and 819 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
libstdc++-v3/ChangeLog
View File

@ -1,3 +1,25 @@
2007-03-18 Mark Mitchell <mark@codesourcery.com>
* libsupc++/array_type_info.cc: Likewise.
* libsupc++/bad_cast.cc: Likewise.
* libsupc++/bad_typeid.cc: Likewise.
* libsupc++/class_type_info.cc: Likewise.
* libsupc++/dyncast.cc: Likewise.
* libsupc++/enum_type_info.cc: Likewise.
* libsupc++/function_type_info.cc: Likewise.
* libsupc++/fundamental_type_info.cc: Likewise.
* libsupc++/pbase_type_info.cc: Likewise.
* libsupc++/pmem_type_info.cc: Likewise.
* libsupc++/pointer_type_info.cc: Likewise.
* libsupc++/si_class_type_info.cc: Likewise.
* libsupc++/vmi_class_type_info.cc: Likewise.
* libsupc++/tinfo.h: Move inline type_info functions here.
* libsupc++/tinfo.cc: Separate type_info classes into their own
files.
* libsupc++/tinfo2.cc: Likewise.
* Makefile.am (sources): Mention new files.
* Makefile.in: Regenerated.
2007-03-16 Benjamin Kosnik <bkoz@redhat.com>
* testsuite/27_io/headers/cinttypes/types_std_c++0x.cc: Use

13
libstdc++-v3/libsupc++/Makefile.am
View File

@ -41,10 +41,15 @@ if GLIBCXX_HOSTED
endif
sources = \
array_type_info.cc \
bad_cast.cc \
bad_typeid.cc \
class_type_info.cc \
del_op.cc \
del_opnt.cc \
del_opv.cc \
del_opvnt.cc \
dyncast.cc \
eh_alloc.cc \
eh_arm.cc \
eh_aux_runtime.cc \
@ -58,16 +63,24 @@ sources = \
eh_throw.cc \
eh_type.cc \
eh_unex_handler.cc \
enum_type_info.cc \
function_type_info.cc \
fundamental_type_info.cc \
guard.cc \
new_handler.cc \
new_op.cc \
new_opnt.cc \
new_opv.cc \
new_opvnt.cc \
pbase_type_info.cc \
pmem_type_info.cc \
pointer_type_info.cc \
pure.cc \
si_class_type_info.cc \
tinfo.cc \
tinfo2.cc \
vec.cc \
vmi_class_type_info.cc \
vterminate.cc
libsupc___la_SOURCES = $(sources) $(c_sources)

71
libstdc++-v3/libsupc++/Makefile.in
View File

@ -69,32 +69,46 @@ am__installdirs = "$(DESTDIR)$(toolexeclibdir)" \
toolexeclibLTLIBRARIES_INSTALL = $(INSTALL)
LTLIBRARIES = $(noinst_LTLIBRARIES) $(toolexeclib_LTLIBRARIES)
libsupc___la_LIBADD =
am__libsupc___la_SOURCES_DIST = del_op.cc del_opnt.cc del_opv.cc \
del_opvnt.cc eh_alloc.cc eh_arm.cc eh_aux_runtime.cc \
eh_call.cc eh_catch.cc eh_exception.cc eh_globals.cc \
eh_personality.cc eh_term_handler.cc eh_terminate.cc \
eh_throw.cc eh_type.cc eh_unex_handler.cc guard.cc \
new_handler.cc new_op.cc new_opnt.cc new_opv.cc new_opvnt.cc \
pure.cc tinfo.cc tinfo2.cc vec.cc vterminate.cc cp-demangle.c
am__objects_1 = del_op.lo del_opnt.lo del_opv.lo del_opvnt.lo \
eh_alloc.lo eh_arm.lo eh_aux_runtime.lo eh_call.lo eh_catch.lo \
eh_exception.lo eh_globals.lo eh_personality.lo \
eh_term_handler.lo eh_terminate.lo eh_throw.lo eh_type.lo \
eh_unex_handler.lo guard.lo new_handler.lo new_op.lo \
new_opnt.lo new_opv.lo new_opvnt.lo pure.lo tinfo.lo tinfo2.lo \
vec.lo vterminate.lo
am__libsupc___la_SOURCES_DIST = array_type_info.cc bad_cast.cc \
bad_typeid.cc class_type_info.cc del_op.cc del_opnt.cc \
del_opv.cc del_opvnt.cc dyncast.cc eh_alloc.cc eh_arm.cc \
eh_aux_runtime.cc eh_call.cc eh_catch.cc eh_exception.cc \
eh_globals.cc eh_personality.cc eh_term_handler.cc \
eh_terminate.cc eh_throw.cc eh_type.cc eh_unex_handler.cc \
enum_type_info.cc function_type_info.cc \
fundamental_type_info.cc guard.cc new_handler.cc new_op.cc \
new_opnt.cc new_opv.cc new_opvnt.cc pbase_type_info.cc \
pmem_type_info.cc pointer_type_info.cc pure.cc \
si_class_type_info.cc tinfo.cc tinfo2.cc vec.cc \
vmi_class_type_info.cc vterminate.cc cp-demangle.c
am__objects_1 = array_type_info.lo bad_cast.lo bad_typeid.lo \
class_type_info.lo del_op.lo del_opnt.lo del_opv.lo \
del_opvnt.lo dyncast.lo eh_alloc.lo eh_arm.lo \
eh_aux_runtime.lo eh_call.lo eh_catch.lo eh_exception.lo \
eh_globals.lo eh_personality.lo eh_term_handler.lo \
eh_terminate.lo eh_throw.lo eh_type.lo eh_unex_handler.lo \
enum_type_info.lo function_type_info.lo \
fundamental_type_info.lo guard.lo new_handler.lo new_op.lo \
new_opnt.lo new_opv.lo new_opvnt.lo pbase_type_info.lo \
pmem_type_info.lo pointer_type_info.lo pure.lo \
si_class_type_info.lo tinfo.lo tinfo2.lo vec.lo \
vmi_class_type_info.lo vterminate.lo
@GLIBCXX_HOSTED_TRUE@am__objects_2 = cp-demangle.lo
am_libsupc___la_OBJECTS = $(am__objects_1) $(am__objects_2)
libsupc___la_OBJECTS = $(am_libsupc___la_OBJECTS)
libsupc__convenience_la_LIBADD =
am__libsupc__convenience_la_SOURCES_DIST = del_op.cc del_opnt.cc \
del_opv.cc del_opvnt.cc eh_alloc.cc eh_arm.cc \
eh_aux_runtime.cc eh_call.cc eh_catch.cc eh_exception.cc \
eh_globals.cc eh_personality.cc eh_term_handler.cc \
eh_terminate.cc eh_throw.cc eh_type.cc eh_unex_handler.cc \
guard.cc new_handler.cc new_op.cc new_opnt.cc new_opv.cc \
new_opvnt.cc pure.cc tinfo.cc tinfo2.cc vec.cc vterminate.cc \
cp-demangle.c
am__libsupc__convenience_la_SOURCES_DIST = array_type_info.cc \
bad_cast.cc bad_typeid.cc class_type_info.cc del_op.cc \
del_opnt.cc del_opv.cc del_opvnt.cc dyncast.cc eh_alloc.cc \
eh_arm.cc eh_aux_runtime.cc eh_call.cc eh_catch.cc \
eh_exception.cc eh_globals.cc eh_personality.cc \
eh_term_handler.cc eh_terminate.cc eh_throw.cc eh_type.cc \
eh_unex_handler.cc enum_type_info.cc function_type_info.cc \
fundamental_type_info.cc guard.cc new_handler.cc new_op.cc \
new_opnt.cc new_opv.cc new_opvnt.cc pbase_type_info.cc \
pmem_type_info.cc pointer_type_info.cc pure.cc \
si_class_type_info.cc tinfo.cc tinfo2.cc vec.cc \
vmi_class_type_info.cc vterminate.cc cp-demangle.c
am_libsupc__convenience_la_OBJECTS = $(am__objects_1) $(am__objects_2)
libsupc__convenience_la_OBJECTS = \
$(am_libsupc__convenience_la_OBJECTS)
@ -327,10 +341,15 @@ headers = \
@GLIBCXX_HOSTED_TRUE@ cp-demangle.c
sources = \
array_type_info.cc \
bad_cast.cc \
bad_typeid.cc \
class_type_info.cc \
del_op.cc \
del_opnt.cc \
del_opv.cc \
del_opvnt.cc \
dyncast.cc \
eh_alloc.cc \
eh_arm.cc \
eh_aux_runtime.cc \
@ -344,16 +363,24 @@ sources = \
eh_throw.cc \
eh_type.cc \
eh_unex_handler.cc \
enum_type_info.cc \
function_type_info.cc \
fundamental_type_info.cc \
guard.cc \
new_handler.cc \
new_op.cc \
new_opnt.cc \
new_opv.cc \
new_opvnt.cc \
pbase_type_info.cc \
pmem_type_info.cc \
pointer_type_info.cc \
pure.cc \
si_class_type_info.cc \
tinfo.cc \
tinfo2.cc \
vec.cc \
vmi_class_type_info.cc \
vterminate.cc
libsupc___la_SOURCES = $(sources) $(c_sources)

38
libstdc++-v3/libsupc++/array_type_info.cc Normal file
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@ -0,0 +1,38 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__array_type_info::
~__array_type_info ()
{}
}

42
libstdc++-v3/libsupc++/bad_cast.cc Normal file
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@ -0,0 +1,42 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <typeinfo>
namespace std {
bad_cast::~bad_cast() throw() { }
const char*
bad_cast::what() const throw()
{
return "std::bad_cast";
}
} // namespace std

42
libstdc++-v3/libsupc++/bad_typeid.cc Normal file
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@ -0,0 +1,42 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include <typeinfo>
namespace std {
bad_typeid::~bad_typeid() throw() { }
const char*
bad_typeid::what() const throw()
{
return "std::bad_typeid";
}
} // namespace std

116
libstdc++-v3/libsupc++/class_type_info.cc Normal file
View File

@ -0,0 +1,116 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__class_type_info::
~__class_type_info ()
{}
bool __class_type_info::
__do_catch (const type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
if (*this == *thr_type)
return true;
if (outer >= 4)
// Neither `A' nor `A *'.
return false;
return thr_type->__do_upcast (this, thr_obj);
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst_type,
void **obj_ptr) const
{
__upcast_result result (__vmi_class_type_info::__flags_unknown_mask);
__do_upcast (dst_type, *obj_ptr, result);
if (!contained_public_p (result.part2dst))
return false;
*obj_ptr = const_cast <void *> (result.dst_ptr);
return true;
}
__class_type_info::__sub_kind __class_type_info::
__do_find_public_src (ptrdiff_t,
const void *obj_ptr,
const __class_type_info *,
const void *src_ptr) const
{
if (src_ptr == obj_ptr)
// Must be our type, as the pointers match.
return __contained_public;
return __not_contained;
}
bool __class_type_info::
__do_dyncast (ptrdiff_t,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
result.dst2src = __not_contained;
return false;
}
return false;
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj,
__upcast_result &__restrict result) const
{
if (*this == *dst)
{
result.dst_ptr = obj;
result.base_type = nonvirtual_base_type;
result.part2dst = __contained_public;
return true;
}
return false;
}
}

77
libstdc++-v3/libsupc++/dyncast.cc Normal file
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@ -0,0 +1,77 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
// this is the external interface to the dynamic cast machinery
extern "C" void *
__dynamic_cast (const void *src_ptr, // object started from
const __class_type_info *src_type, // type of the starting object
const __class_type_info *dst_type, // desired target type
ptrdiff_t src2dst) // how src and dst are related
{
const void *vtable = *static_cast <const void *const *> (src_ptr);
const vtable_prefix *prefix =
adjust_pointer <vtable_prefix> (vtable,
-offsetof (vtable_prefix, origin));
const void *whole_ptr =
adjust_pointer <void> (src_ptr, prefix->whole_object);
const __class_type_info *whole_type = prefix->whole_type;
__class_type_info::__dyncast_result result;
whole_type->__do_dyncast (src2dst, __class_type_info::__contained_public,
dst_type, whole_ptr, src_type, src_ptr, result);
if (!result.dst_ptr)
return NULL;
if (contained_public_p (result.dst2src))
// Src is known to be a public base of dst.
return const_cast <void *> (result.dst_ptr);
if (contained_public_p (__class_type_info::__sub_kind (result.whole2src & result.whole2dst)))
// Both src and dst are known to be public bases of whole. Found a valid
// cross cast.
return const_cast <void *> (result.dst_ptr);
if (contained_nonvirtual_p (result.whole2src))
// Src is known to be a non-public nonvirtual base of whole, and not a
// base of dst. Found an invalid cross cast, which cannot also be a down
// cast
return NULL;
if (result.dst2src == __class_type_info::__unknown)
result.dst2src = dst_type->__find_public_src (src2dst, result.dst_ptr,
src_type, src_ptr);
if (contained_public_p (result.dst2src))
// Found a valid down cast
return const_cast <void *> (result.dst_ptr);
// Must be an invalid down cast, or the cross cast wasn't bettered
return NULL;
}
}

38
libstdc++-v3/libsupc++/enum_type_info.cc Normal file
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@ -0,0 +1,38 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__enum_type_info::
~__enum_type_info ()
{}
}

44
libstdc++-v3/libsupc++/function_type_info.cc Normal file
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@ -0,0 +1,44 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__function_type_info::
~__function_type_info ()
{}
bool __function_type_info::
__is_function_p () const
{
return true;
}
}

41
libstdc++-v3/libsupc++/fundamental_type_info.cc Normal file
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@ -0,0 +1,41 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
// This has special meaning to the compiler, and will cause it
// to emit the type_info structures for the fundamental types which are
// mandated to exist in the runtime.
__fundamental_type_info::
~__fundamental_type_info ()
{}
}

67
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@ -0,0 +1,67 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__pbase_type_info::
~__pbase_type_info ()
{}
bool __pbase_type_info::
__do_catch (const type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
if (*this == *thr_type)
return true; // same type
if (typeid (*this) != typeid (*thr_type))
return false; // not both same kind of pointers
if (!(outer & 1))
// We're not the same and our outer pointers are not all const qualified
// Therefore there must at least be a qualification conversion involved
// But for that to be valid, our outer pointers must be const qualified.
return false;
const __pbase_type_info *thrown_type =
static_cast <const __pbase_type_info *> (thr_type);
if (thrown_type->__flags & ~__flags)
// We're less qualified.
return false;
if (!(__flags & __const_mask))
outer &= ~1;
return __pointer_catch (thrown_type, thr_obj, outer);
}
}

54
libstdc++-v3/libsupc++/pmem_type_info.cc Normal file
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@ -0,0 +1,54 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__pointer_to_member_type_info::
~__pointer_to_member_type_info ()
{}
bool __pointer_to_member_type_info::
__pointer_catch (const __pbase_type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
// This static cast is always valid, as our caller will have determined that
// thr_type is really a __pointer_to_member_type_info.
const __pointer_to_member_type_info *thrown_type =
static_cast <const __pointer_to_member_type_info *> (thr_type);
if (*__context != *thrown_type->__context)
return false; // not pointers to member of same class
return __pbase_type_info::__pointer_catch (thrown_type, thr_obj, outer);
}
}

58
libstdc++-v3/libsupc++/pointer_type_info.cc Normal file
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@ -0,0 +1,58 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__pointer_type_info::
~__pointer_type_info ()
{}
bool __pointer_type_info::
__is_pointer_p () const
{
return true;
}
bool __pointer_type_info::
__pointer_catch (const __pbase_type_info *thrown_type,
void **thr_obj,
unsigned outer) const
{
if (outer < 2 && *__pointee == typeid (void))
{
// conversion to void
return !thrown_type->__pointee->__is_function_p ();
}
return __pbase_type_info::__pointer_catch (thrown_type, thr_obj, outer);
}
}

90
libstdc++-v3/libsupc++/si_class_type_info.cc Normal file
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@ -0,0 +1,90 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__si_class_type_info::
~__si_class_type_info ()
{}
__class_type_info::__sub_kind __si_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src_ptr == obj_ptr && *this == *src_type)
return __contained_public;
return __base_type->__do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
bool __si_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
return __base_type->__do_dyncast (src2dst, access_path, dst_type, obj_ptr,
src_type, src_ptr, result);
}
bool __si_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
return __base_type->__do_upcast (dst, obj_ptr, result);
}
}

675
libstdc++-v3/libsupc++/tinfo.cc
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@ -32,31 +32,11 @@
#include <bits/c++config.h>
#include <cstddef>
#include "tinfo.h"
#include "new" // for placement new
// This file contains the minimal working set necessary to link with code
// that uses virtual functions and -frtti but does not actually use RTTI
// functionality.
std::type_info::
~type_info ()
{ }
std::bad_cast::~bad_cast() throw() { }
std::bad_typeid::~bad_typeid() throw() { }
const char*
std::bad_cast::what() const throw()
{
return "std::bad_cast";
}
const char*
std::bad_typeid::what() const throw()
{
return "std::bad_typeid";
}
#if !__GXX_TYPEINFO_EQUALITY_INLINE
// We can't rely on common symbols being shared between shared objects.
@ -103,658 +83,3 @@ __do_upcast (const abi::__class_type_info *, void **) const
}
}
namespace {
using namespace std;
using namespace abi;
// Initial part of a vtable, this structure is used with offsetof, so we don't
// have to keep alignments consistent manually.
struct vtable_prefix
{
// Offset to most derived object.
ptrdiff_t whole_object;
// Additional padding if necessary.
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding1;
#endif
// Pointer to most derived type_info.
const __class_type_info *whole_type;
// Additional padding if necessary.
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding2;
#endif
// What a class's vptr points to.
const void *origin;
};
template <typename T>
inline const T *
adjust_pointer (const void *base, ptrdiff_t offset)
{
return reinterpret_cast <const T *>
(reinterpret_cast <const char *> (base) + offset);
}
// ADDR is a pointer to an object. Convert it to a pointer to a base,
// using OFFSET. IS_VIRTUAL is true, if we are getting a virtual base.
inline void const *
convert_to_base (void const *addr, bool is_virtual, ptrdiff_t offset)
{
if (is_virtual)
{
const void *vtable = *static_cast <const void *const *> (addr);
offset = *adjust_pointer<ptrdiff_t> (vtable, offset);
}
return adjust_pointer<void> (addr, offset);
}
// some predicate functions for __class_type_info::__sub_kind
inline bool contained_p (__class_type_info::__sub_kind access_path)
{
return access_path >= __class_type_info::__contained_mask;
}
inline bool public_p (__class_type_info::__sub_kind access_path)
{
return access_path & __class_type_info::__contained_public_mask;
}
inline bool virtual_p (__class_type_info::__sub_kind access_path)
{
return (access_path & __class_type_info::__contained_virtual_mask);
}
inline bool contained_public_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_public);
}
inline bool contained_nonpublic_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_mask);
}
inline bool contained_nonvirtual_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & (__class_type_info::__contained_mask
| __class_type_info::__contained_virtual_mask))
== __class_type_info::__contained_mask);
}
static const __class_type_info *const nonvirtual_base_type =
static_cast <const __class_type_info *> (0) + 1;
} // namespace
namespace __cxxabiv1
{
__class_type_info::
~__class_type_info ()
{}
__si_class_type_info::
~__si_class_type_info ()
{}
__vmi_class_type_info::
~__vmi_class_type_info ()
{}
// __upcast_result is used to hold information during traversal of a class
// hierarchy when catch matching.
struct __class_type_info::__upcast_result
{
const void *dst_ptr; // pointer to caught object
__sub_kind part2dst; // path from current base to target
int src_details; // hints about the source type hierarchy
const __class_type_info *base_type; // where we found the target,
// if in vbase the __class_type_info of vbase
// if a non-virtual base then 1
// else NULL
__upcast_result (int d)
:dst_ptr (NULL), part2dst (__unknown), src_details (d), base_type (NULL)
{}
};
// __dyncast_result is used to hold information during traversal of a class
// hierarchy when dynamic casting.
struct __class_type_info::__dyncast_result
{
const void *dst_ptr; // pointer to target object or NULL
__sub_kind whole2dst; // path from most derived object to target
__sub_kind whole2src; // path from most derived object to sub object
__sub_kind dst2src; // path from target to sub object
int whole_details; // details of the whole class hierarchy
__dyncast_result (int details_ = __vmi_class_type_info::__flags_unknown_mask)
:dst_ptr (NULL), whole2dst (__unknown),
whole2src (__unknown), dst2src (__unknown),
whole_details (details_)
{}
protected:
__dyncast_result(const __dyncast_result&);
__dyncast_result&
operator=(const __dyncast_result&);
};
bool __class_type_info::
__do_catch (const type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
if (*this == *thr_type)
return true;
if (outer >= 4)
// Neither `A' nor `A *'.
return false;
return thr_type->__do_upcast (this, thr_obj);
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst_type,
void **obj_ptr) const
{
__upcast_result result (__vmi_class_type_info::__flags_unknown_mask);
__do_upcast (dst_type, *obj_ptr, result);
if (!contained_public_p (result.part2dst))
return false;
*obj_ptr = const_cast <void *> (result.dst_ptr);
return true;
}
inline __class_type_info::__sub_kind __class_type_info::
__find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src2dst >= 0)
return adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
if (src2dst == -2)
return __not_contained;
return __do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
__class_type_info::__sub_kind __class_type_info::
__do_find_public_src (ptrdiff_t,
const void *obj_ptr,
const __class_type_info *,
const void *src_ptr) const
{
if (src_ptr == obj_ptr)
// Must be our type, as the pointers match.
return __contained_public;
return __not_contained;
}
__class_type_info::__sub_kind __si_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src_ptr == obj_ptr && *this == *src_type)
return __contained_public;
return __base_type->__do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
__class_type_info::__sub_kind __vmi_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (obj_ptr == src_ptr && *this == *src_type)
return __contained_public;
for (std::size_t i = __base_count; i--;)
{
if (!__base_info[i].__is_public_p ())
continue; // Not public, can't be here.
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
{
if (src2dst == -3)
continue; // Not a virtual base, so can't be here.
}
base = convert_to_base (base, is_virtual, offset);
__sub_kind base_kind = __base_info[i].__base_type->__do_find_public_src
(src2dst, base, src_type, src_ptr);
if (contained_p (base_kind))
{
if (is_virtual)
base_kind = __sub_kind (base_kind | __contained_virtual_mask);
return base_kind;
}
}
return __not_contained;
}
bool __class_type_info::
__do_dyncast (ptrdiff_t,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
result.dst2src = __not_contained;
return false;
}
return false;
}
bool __si_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
return __base_type->__do_dyncast (src2dst, access_path, dst_type, obj_ptr,
src_type, src_ptr, result);
}
// This is a big hairy function. Although the run-time behaviour of
// dynamic_cast is simple to describe, it gives rise to some non-obvious
// behaviour. We also desire to determine as early as possible any definite
// answer we can get. Because it is unknown what the run-time ratio of
// succeeding to failing dynamic casts is, we do not know in which direction
// to bias any optimizations. To that end we make no particular effort towards
// early fail answers or early success answers. Instead we try to minimize
// work by filling in things lazily (when we know we need the information),
// and opportunisticly take early success or failure results.
bool __vmi_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (result.whole_details & __flags_unknown_mask)
result.whole_details = __flags;
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
bool result_ambig = false;
for (std::size_t i = __base_count; i--;)
{
__dyncast_result result2 (result.whole_details);
void const *base = obj_ptr;
__sub_kind base_access = access_path;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
base_access = __sub_kind (base_access | __contained_virtual_mask);
base = convert_to_base (base, is_virtual, offset);
if (!__base_info[i].__is_public_p ())
{
if (src2dst == -2 &&
!(result.whole_details
& (__non_diamond_repeat_mask | __diamond_shaped_mask)))
// The hierarchy has no duplicate bases (which might ambiguate
// things) and where we started is not a public base of what we
// want (so it cannot be a downcast). There is nothing of interest
// hiding in a non-public base.
continue;
base_access = __sub_kind (base_access & ~__contained_public_mask);
}
bool result2_ambig
= __base_info[i].__base_type->__do_dyncast (src2dst, base_access,
dst_type, base,
src_type, src_ptr, result2);
result.whole2src = __sub_kind (result.whole2src | result2.whole2src);
if (result2.dst2src == __contained_public
|| result2.dst2src == __contained_ambig)
{
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result.dst2src = result2.dst2src;
// Found a downcast which can't be bettered or an ambiguous downcast
// which can't be disambiguated
return result2_ambig;
}
if (!result_ambig && !result.dst_ptr)
{
// Not found anything yet.
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = result2_ambig;
if (result.dst_ptr && result.whole2src != __unknown
&& !(__flags & __non_diamond_repeat_mask))
// Found dst and src and we don't have repeated bases.
return result_ambig;
}
else if (result.dst_ptr && result.dst_ptr == result2.dst_ptr)
{
// Found at same address, must be via virtual. Pick the most
// accessible path.
result.whole2dst =
__sub_kind (result.whole2dst | result2.whole2dst);
}
else if ((result.dst_ptr != 0 && result2.dst_ptr != 0)
|| (result.dst_ptr != 0 && result2_ambig)
|| (result2.dst_ptr != 0 && result_ambig))
{
// Found two different DST_TYPE bases, or a valid one and a set of
// ambiguous ones, must disambiguate. See whether SRC_PTR is
// contained publicly within one of the non-ambiguous choices. If it
// is in only one, then that's the choice. If it is in both, then
// we're ambiguous and fail. If it is in neither, we're ambiguous,
// but don't yet fail as we might later find a third base which does
// contain SRC_PTR.
__sub_kind new_sub_kind = result2.dst2src;
__sub_kind old_sub_kind = result.dst2src;
if (contained_p (result.whole2src)
&& (!virtual_p (result.whole2src)
|| !(result.whole_details & __diamond_shaped_mask)))
{
// We already found SRC_PTR as a base of most derived, and
// either it was non-virtual, or the whole hierarchy is
// not-diamond shaped. Therefore if it is in either choice, it
// can only be in one of them, and we will already know.
if (old_sub_kind == __unknown)
old_sub_kind = __not_contained;
if (new_sub_kind == __unknown)
new_sub_kind = __not_contained;
}
else
{
if (old_sub_kind >= __not_contained)
;// already calculated
else if (contained_p (new_sub_kind)
&& (!virtual_p (new_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
// Already found inside the other choice, and it was
// non-virtual or we are not diamond shaped.
old_sub_kind = __not_contained;
else
old_sub_kind = dst_type->__find_public_src
(src2dst, result.dst_ptr, src_type, src_ptr);
if (new_sub_kind >= __not_contained)
;// already calculated
else if (contained_p (old_sub_kind)
&& (!virtual_p (old_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
// Already found inside the other choice, and it was
// non-virtual or we are not diamond shaped.
new_sub_kind = __not_contained;
else
new_sub_kind = dst_type->__find_public_src
(src2dst, result2.dst_ptr, src_type, src_ptr);
}
// Neither sub_kind can be contained_ambig -- we bail out early
// when we find those.
if (contained_p (__sub_kind (new_sub_kind ^ old_sub_kind)))
{
// Only on one choice, not ambiguous.
if (contained_p (new_sub_kind))
{
// Only in new.
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = false;
old_sub_kind = new_sub_kind;
}
result.dst2src = old_sub_kind;
if (public_p (result.dst2src))
return false; // Can't be an ambiguating downcast for later discovery.
if (!virtual_p (result.dst2src))
return false; // Found non-virtually can't be bettered
}
else if (contained_p (__sub_kind (new_sub_kind & old_sub_kind)))
{
// In both.
result.dst_ptr = NULL;
result.dst2src = __contained_ambig;
return true; // Fail.
}
else
{
// In neither publicly, ambiguous for the moment, but keep
// looking. It is possible that it was private in one or
// both and therefore we should fail, but that's just tough.
result.dst_ptr = NULL;
result.dst2src = __not_contained;
result_ambig = true;
}
}
if (result.whole2src == __contained_private)
// We found SRC_PTR as a private non-virtual base, therefore all
// cross casts will fail. We have already found a down cast, if
// there is one.
return result_ambig;
}
return result_ambig;
}
bool __class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj,
__upcast_result &__restrict result) const
{
if (*this == *dst)
{
result.dst_ptr = obj;
result.base_type = nonvirtual_base_type;
result.part2dst = __contained_public;
return true;
}
return false;
}
bool __si_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
return __base_type->__do_upcast (dst, obj_ptr, result);
}
bool __vmi_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
int src_details = result.src_details;
if (src_details & __flags_unknown_mask)
src_details = __flags;
for (std::size_t i = __base_count; i--;)
{
__upcast_result result2 (src_details);
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
bool is_public = __base_info[i].__is_public_p ();
if (!is_public && !(src_details & __non_diamond_repeat_mask))
// original cannot have an ambiguous base, so skip private bases
continue;
if (base)
base = convert_to_base (base, is_virtual, offset);
if (__base_info[i].__base_type->__do_upcast (dst, base, result2))
{
if (result2.base_type == nonvirtual_base_type && is_virtual)
result2.base_type = __base_info[i].__base_type;
if (contained_p (result2.part2dst) && !is_public)
result2.part2dst = __sub_kind (result2.part2dst & ~__contained_public_mask);
if (!result.base_type)
{
result = result2;
if (!contained_p (result.part2dst))
return true; // found ambiguously
if (result.part2dst & __contained_public_mask)
{
if (!(__flags & __non_diamond_repeat_mask))
return true; // cannot have an ambiguous other base
}
else
{
if (!virtual_p (result.part2dst))
return true; // cannot have another path
if (!(__flags & __diamond_shaped_mask))
return true; // cannot have a more accessible path
}
}
else if (result.dst_ptr != result2.dst_ptr)
{
// Found an ambiguity.
result.dst_ptr = NULL;
result.part2dst = __contained_ambig;
return true;
}
else if (result.dst_ptr)
{
// Ok, found real object via a virtual path.
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
else
{
// Dealing with a null pointer, need to check vbase
// containing each of the two choices.
if (result2.base_type == nonvirtual_base_type
|| result.base_type == nonvirtual_base_type
|| !(*result2.base_type == *result.base_type))
{
// Already ambiguous, not virtual or via different virtuals.
// Cannot match.
result.part2dst = __contained_ambig;
return true;
}
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
}
}
return result.part2dst != __unknown;
}
// this is the external interface to the dynamic cast machinery
extern "C" void *
__dynamic_cast (const void *src_ptr, // object started from
const __class_type_info *src_type, // type of the starting object
const __class_type_info *dst_type, // desired target type
ptrdiff_t src2dst) // how src and dst are related
{
const void *vtable = *static_cast <const void *const *> (src_ptr);
const vtable_prefix *prefix =
adjust_pointer <vtable_prefix> (vtable,
-offsetof (vtable_prefix, origin));
const void *whole_ptr =
adjust_pointer <void> (src_ptr, prefix->whole_object);
const __class_type_info *whole_type = prefix->whole_type;
__class_type_info::__dyncast_result result;
whole_type->__do_dyncast (src2dst, __class_type_info::__contained_public,
dst_type, whole_ptr, src_type, src_ptr, result);
if (!result.dst_ptr)
return NULL;
if (contained_public_p (result.dst2src))
// Src is known to be a public base of dst.
return const_cast <void *> (result.dst_ptr);
if (contained_public_p (__class_type_info::__sub_kind (result.whole2src & result.whole2dst)))
// Both src and dst are known to be public bases of whole. Found a valid
// cross cast.
return const_cast <void *> (result.dst_ptr);
if (contained_nonvirtual_p (result.whole2src))
// Src is known to be a non-public nonvirtual base of whole, and not a
// base of dst. Found an invalid cross cast, which cannot also be a down
// cast
return NULL;
if (result.dst2src == __class_type_info::__unknown)
result.dst2src = dst_type->__find_public_src (src2dst, result.dst_ptr,
src_type, src_ptr);
if (contained_public_p (result.dst2src))
// Found a valid down cast
return const_cast <void *> (result.dst_ptr);
// Must be an invalid down cast, or the cross cast wasn't bettered
return NULL;
}
} // namespace __cxxabiv1

152
libstdc++-v3/libsupc++/tinfo.h
View File

@ -34,3 +34,155 @@
// Class declarations shared between the typeinfo implementation files.
#include <cxxabi.h>
namespace __cxxabiv1 {
inline bool __pbase_type_info::
__pointer_catch (const __pbase_type_info *thrown_type,
void **thr_obj,
unsigned outer) const
{
return __pointee->__do_catch (thrown_type->__pointee, thr_obj, outer + 2);
}
namespace {
using namespace std;
using namespace abi;
// Initial part of a vtable, this structure is used with offsetof, so we don't
// have to keep alignments consistent manually.
struct vtable_prefix
{
// Offset to most derived object.
ptrdiff_t whole_object;
// Additional padding if necessary.
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding1;
#endif
// Pointer to most derived type_info.
const __class_type_info *whole_type;
// Additional padding if necessary.
#ifdef _GLIBCXX_VTABLE_PADDING
ptrdiff_t padding2;
#endif
// What a class's vptr points to.
const void *origin;
};
template <typename T>
inline const T *
adjust_pointer (const void *base, ptrdiff_t offset)
{
return reinterpret_cast <const T *>
(reinterpret_cast <const char *> (base) + offset);
}
// ADDR is a pointer to an object. Convert it to a pointer to a base,
// using OFFSET. IS_VIRTUAL is true, if we are getting a virtual base.
inline void const *
convert_to_base (void const *addr, bool is_virtual, ptrdiff_t offset)
{
if (is_virtual)
{
const void *vtable = *static_cast <const void *const *> (addr);
offset = *adjust_pointer<ptrdiff_t> (vtable, offset);
}
return adjust_pointer<void> (addr, offset);
}
// some predicate functions for __class_type_info::__sub_kind
inline bool contained_p (__class_type_info::__sub_kind access_path)
{
return access_path >= __class_type_info::__contained_mask;
}
inline bool public_p (__class_type_info::__sub_kind access_path)
{
return access_path & __class_type_info::__contained_public_mask;
}
inline bool virtual_p (__class_type_info::__sub_kind access_path)
{
return (access_path & __class_type_info::__contained_virtual_mask);
}
inline bool contained_public_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_public);
}
inline bool contained_nonpublic_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & __class_type_info::__contained_public)
== __class_type_info::__contained_mask);
}
inline bool contained_nonvirtual_p (__class_type_info::__sub_kind access_path)
{
return ((access_path & (__class_type_info::__contained_mask
| __class_type_info::__contained_virtual_mask))
== __class_type_info::__contained_mask);
}
static const __class_type_info *const nonvirtual_base_type =
static_cast <const __class_type_info *> (0) + 1;
} // namespace
// __upcast_result is used to hold information during traversal of a class
// hierarchy when catch matching.
struct __class_type_info::__upcast_result
{
const void *dst_ptr; // pointer to caught object
__sub_kind part2dst; // path from current base to target
int src_details; // hints about the source type hierarchy
const __class_type_info *base_type; // where we found the target,
// if in vbase the __class_type_info of vbase
// if a non-virtual base then 1
// else NULL
__upcast_result (int d)
:dst_ptr (NULL), part2dst (__unknown), src_details (d), base_type (NULL)
{}
};
// __dyncast_result is used to hold information during traversal of a class
// hierarchy when dynamic casting.
struct __class_type_info::__dyncast_result
{
const void *dst_ptr; // pointer to target object or NULL
__sub_kind whole2dst; // path from most derived object to target
__sub_kind whole2src; // path from most derived object to sub object
__sub_kind dst2src; // path from target to sub object
int whole_details; // details of the whole class hierarchy
__dyncast_result (int details_ = __vmi_class_type_info::__flags_unknown_mask)
:dst_ptr (NULL), whole2dst (__unknown),
whole2src (__unknown), dst2src (__unknown),
whole_details (details_)
{}
protected:
__dyncast_result(const __dyncast_result&);
__dyncast_result&
operator=(const __dyncast_result&);
};
inline __class_type_info::__sub_kind __class_type_info::
__find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (src2dst >= 0)
return adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
if (src2dst == -2)
return __not_contained;
return __do_find_public_src (src2dst, obj_ptr, src_type, src_ptr);
}
}

122
libstdc++-v3/libsupc++/tinfo2.cc
View File

@ -31,10 +31,6 @@
#include <cstddef>
#include "tinfo.h"
#include "new" // for placement new
// We can't rely on having stdlib.h if we're freestanding.
extern "C" void abort ();
using std::type_info;
@ -51,121 +47,3 @@ type_info::before (const type_info &arg) const
}
#endif
#include <cxxabi.h>
namespace __cxxabiv1 {
using namespace std;
// This has special meaning to the compiler, and will cause it
// to emit the type_info structures for the fundamental types which are
// mandated to exist in the runtime.
__fundamental_type_info::
~__fundamental_type_info ()
{}
__array_type_info::
~__array_type_info ()
{}
__function_type_info::
~__function_type_info ()
{}
__enum_type_info::
~__enum_type_info ()
{}
__pbase_type_info::
~__pbase_type_info ()
{}
__pointer_type_info::
~__pointer_type_info ()
{}
__pointer_to_member_type_info::
~__pointer_to_member_type_info ()
{}
bool __pointer_type_info::
__is_pointer_p () const
{
return true;
}
bool __function_type_info::
__is_function_p () const
{
return true;
}
bool __pbase_type_info::
__do_catch (const type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
if (*this == *thr_type)
return true; // same type
if (typeid (*this) != typeid (*thr_type))
return false; // not both same kind of pointers
if (!(outer & 1))
// We're not the same and our outer pointers are not all const qualified
// Therefore there must at least be a qualification conversion involved
// But for that to be valid, our outer pointers must be const qualified.
return false;
const __pbase_type_info *thrown_type =
static_cast <const __pbase_type_info *> (thr_type);
if (thrown_type->__flags & ~__flags)
// We're less qualified.
return false;
if (!(__flags & __const_mask))
outer &= ~1;
return __pointer_catch (thrown_type, thr_obj, outer);
}
inline bool __pbase_type_info::
__pointer_catch (const __pbase_type_info *thrown_type,
void **thr_obj,
unsigned outer) const
{
return __pointee->__do_catch (thrown_type->__pointee, thr_obj, outer + 2);
}
bool __pointer_type_info::
__pointer_catch (const __pbase_type_info *thrown_type,
void **thr_obj,
unsigned outer) const
{
if (outer < 2 && *__pointee == typeid (void))
{
// conversion to void
return !thrown_type->__pointee->__is_function_p ();
}
return __pbase_type_info::__pointer_catch (thrown_type, thr_obj, outer);
}
bool __pointer_to_member_type_info::
__pointer_catch (const __pbase_type_info *thr_type,
void **thr_obj,
unsigned outer) const
{
// This static cast is always valid, as our caller will have determined that
// thr_type is really a __pointer_to_member_type_info.
const __pointer_to_member_type_info *thrown_type =
static_cast <const __pointer_to_member_type_info *> (thr_type);
if (*__context != *thrown_type->__context)
return false; // not pointers to member of same class
return __pbase_type_info::__pointer_catch (thrown_type, thr_obj, outer);
}
} // namespace std

364
libstdc++-v3/libsupc++/vmi_class_type_info.cc Normal file
View File

@ -0,0 +1,364 @@
// Copyright (C) 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2007
// Free Software Foundation
//
// 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.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline enums from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
#include "tinfo.h"
namespace __cxxabiv1 {
__vmi_class_type_info::
~__vmi_class_type_info ()
{}
__class_type_info::__sub_kind __vmi_class_type_info::
__do_find_public_src (ptrdiff_t src2dst,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr) const
{
if (obj_ptr == src_ptr && *this == *src_type)
return __contained_public;
for (std::size_t i = __base_count; i--;)
{
if (!__base_info[i].__is_public_p ())
continue; // Not public, can't be here.
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
{
if (src2dst == -3)
continue; // Not a virtual base, so can't be here.
}
base = convert_to_base (base, is_virtual, offset);
__sub_kind base_kind = __base_info[i].__base_type->__do_find_public_src
(src2dst, base, src_type, src_ptr);
if (contained_p (base_kind))
{
if (is_virtual)
base_kind = __sub_kind (base_kind | __contained_virtual_mask);
return base_kind;
}
}
return __not_contained;
}
// This is a big hairy function. Although the run-time behaviour of
// dynamic_cast is simple to describe, it gives rise to some non-obvious
// behaviour. We also desire to determine as early as possible any definite
// answer we can get. Because it is unknown what the run-time ratio of
// succeeding to failing dynamic casts is, we do not know in which direction
// to bias any optimizations. To that end we make no particular effort towards
// early fail answers or early success answers. Instead we try to minimize
// work by filling in things lazily (when we know we need the information),
// and opportunisticly take early success or failure results.
bool __vmi_class_type_info::
__do_dyncast (ptrdiff_t src2dst,
__sub_kind access_path,
const __class_type_info *dst_type,
const void *obj_ptr,
const __class_type_info *src_type,
const void *src_ptr,
__dyncast_result &__restrict result) const
{
if (result.whole_details & __flags_unknown_mask)
result.whole_details = __flags;
if (obj_ptr == src_ptr && *this == *src_type)
{
// The src object we started from. Indicate how we are accessible from
// the most derived object.
result.whole2src = access_path;
return false;
}
if (*this == *dst_type)
{
result.dst_ptr = obj_ptr;
result.whole2dst = access_path;
if (src2dst >= 0)
result.dst2src = adjust_pointer <void> (obj_ptr, src2dst) == src_ptr
? __contained_public : __not_contained;
else if (src2dst == -2)
result.dst2src = __not_contained;
return false;
}
bool result_ambig = false;
for (std::size_t i = __base_count; i--;)
{
__dyncast_result result2 (result.whole_details);
void const *base = obj_ptr;
__sub_kind base_access = access_path;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
if (is_virtual)
base_access = __sub_kind (base_access | __contained_virtual_mask);
base = convert_to_base (base, is_virtual, offset);
if (!__base_info[i].__is_public_p ())
{
if (src2dst == -2 &&
!(result.whole_details
& (__non_diamond_repeat_mask | __diamond_shaped_mask)))
// The hierarchy has no duplicate bases (which might ambiguate
// things) and where we started is not a public base of what we
// want (so it cannot be a downcast). There is nothing of interest
// hiding in a non-public base.
continue;
base_access = __sub_kind (base_access & ~__contained_public_mask);
}
bool result2_ambig
= __base_info[i].__base_type->__do_dyncast (src2dst, base_access,
dst_type, base,
src_type, src_ptr, result2);
result.whole2src = __sub_kind (result.whole2src | result2.whole2src);
if (result2.dst2src == __contained_public
|| result2.dst2src == __contained_ambig)
{
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result.dst2src = result2.dst2src;
// Found a downcast which can't be bettered or an ambiguous downcast
// which can't be disambiguated
return result2_ambig;
}
if (!result_ambig && !result.dst_ptr)
{
// Not found anything yet.
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = result2_ambig;
if (result.dst_ptr && result.whole2src != __unknown
&& !(__flags & __non_diamond_repeat_mask))
// Found dst and src and we don't have repeated bases.
return result_ambig;
}
else if (result.dst_ptr && result.dst_ptr == result2.dst_ptr)
{
// Found at same address, must be via virtual. Pick the most
// accessible path.
result.whole2dst =
__sub_kind (result.whole2dst | result2.whole2dst);
}
else if ((result.dst_ptr != 0 && result2.dst_ptr != 0)
|| (result.dst_ptr != 0 && result2_ambig)
|| (result2.dst_ptr != 0 && result_ambig))
{
// Found two different DST_TYPE bases, or a valid one and a set of
// ambiguous ones, must disambiguate. See whether SRC_PTR is
// contained publicly within one of the non-ambiguous choices. If it
// is in only one, then that's the choice. If it is in both, then
// we're ambiguous and fail. If it is in neither, we're ambiguous,
// but don't yet fail as we might later find a third base which does
// contain SRC_PTR.
__sub_kind new_sub_kind = result2.dst2src;
__sub_kind old_sub_kind = result.dst2src;
if (contained_p (result.whole2src)
&& (!virtual_p (result.whole2src)
|| !(result.whole_details & __diamond_shaped_mask)))
{
// We already found SRC_PTR as a base of most derived, and
// either it was non-virtual, or the whole hierarchy is
// not-diamond shaped. Therefore if it is in either choice, it
// can only be in one of them, and we will already know.
if (old_sub_kind == __unknown)
old_sub_kind = __not_contained;
if (new_sub_kind == __unknown)
new_sub_kind = __not_contained;
}
else
{
if (old_sub_kind >= __not_contained)
;// already calculated
else if (contained_p (new_sub_kind)
&& (!virtual_p (new_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
// Already found inside the other choice, and it was
// non-virtual or we are not diamond shaped.
old_sub_kind = __not_contained;
else
old_sub_kind = dst_type->__find_public_src
(src2dst, result.dst_ptr, src_type, src_ptr);
if (new_sub_kind >= __not_contained)
;// already calculated
else if (contained_p (old_sub_kind)
&& (!virtual_p (old_sub_kind)
|| !(__flags & __diamond_shaped_mask)))
// Already found inside the other choice, and it was
// non-virtual or we are not diamond shaped.
new_sub_kind = __not_contained;
else
new_sub_kind = dst_type->__find_public_src
(src2dst, result2.dst_ptr, src_type, src_ptr);
}
// Neither sub_kind can be contained_ambig -- we bail out early
// when we find those.
if (contained_p (__sub_kind (new_sub_kind ^ old_sub_kind)))
{
// Only on one choice, not ambiguous.
if (contained_p (new_sub_kind))
{
// Only in new.
result.dst_ptr = result2.dst_ptr;
result.whole2dst = result2.whole2dst;
result_ambig = false;
old_sub_kind = new_sub_kind;
}
result.dst2src = old_sub_kind;
if (public_p (result.dst2src))
return false; // Can't be an ambiguating downcast for later discovery.
if (!virtual_p (result.dst2src))
return false; // Found non-virtually can't be bettered
}
else if (contained_p (__sub_kind (new_sub_kind & old_sub_kind)))
{
// In both.
result.dst_ptr = NULL;
result.dst2src = __contained_ambig;
return true; // Fail.
}
else
{
// In neither publicly, ambiguous for the moment, but keep
// looking. It is possible that it was private in one or
// both and therefore we should fail, but that's just tough.
result.dst_ptr = NULL;
result.dst2src = __not_contained;
result_ambig = true;
}
}
if (result.whole2src == __contained_private)
// We found SRC_PTR as a private non-virtual base, therefore all
// cross casts will fail. We have already found a down cast, if
// there is one.
return result_ambig;
}
return result_ambig;
}
bool __vmi_class_type_info::
__do_upcast (const __class_type_info *dst, const void *obj_ptr,
__upcast_result &__restrict result) const
{
if (__class_type_info::__do_upcast (dst, obj_ptr, result))
return true;
int src_details = result.src_details;
if (src_details & __flags_unknown_mask)
src_details = __flags;
for (std::size_t i = __base_count; i--;)
{
__upcast_result result2 (src_details);
const void *base = obj_ptr;
ptrdiff_t offset = __base_info[i].__offset ();
bool is_virtual = __base_info[i].__is_virtual_p ();
bool is_public = __base_info[i].__is_public_p ();
if (!is_public && !(src_details & __non_diamond_repeat_mask))
// original cannot have an ambiguous base, so skip private bases
continue;
if (base)
base = convert_to_base (base, is_virtual, offset);
if (__base_info[i].__base_type->__do_upcast (dst, base, result2))
{
if (result2.base_type == nonvirtual_base_type && is_virtual)
result2.base_type = __base_info[i].__base_type;
if (contained_p (result2.part2dst) && !is_public)
result2.part2dst = __sub_kind (result2.part2dst & ~__contained_public_mask);
if (!result.base_type)
{
result = result2;
if (!contained_p (result.part2dst))
return true; // found ambiguously
if (result.part2dst & __contained_public_mask)
{
if (!(__flags & __non_diamond_repeat_mask))
return true; // cannot have an ambiguous other base
}
else
{
if (!virtual_p (result.part2dst))
return true; // cannot have another path
if (!(__flags & __diamond_shaped_mask))
return true; // cannot have a more accessible path
}
}
else if (result.dst_ptr != result2.dst_ptr)
{
// Found an ambiguity.
result.dst_ptr = NULL;
result.part2dst = __contained_ambig;
return true;
}
else if (result.dst_ptr)
{
// Ok, found real object via a virtual path.
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
else
{
// Dealing with a null pointer, need to check vbase
// containing each of the two choices.
if (result2.base_type == nonvirtual_base_type
|| result.base_type == nonvirtual_base_type
|| !(*result2.base_type == *result.base_type))
{
// Already ambiguous, not virtual or via different virtuals.
// Cannot match.
result.part2dst = __contained_ambig;
return true;
}
result.part2dst
= __sub_kind (result.part2dst | result2.part2dst);
}
}
}
return result.part2dst != __unknown;
}
}