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Diffstat (limited to 'gcc/cp/vec.cc')
-rw-r--r-- | gcc/cp/vec.cc | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/gcc/cp/vec.cc b/gcc/cp/vec.cc new file mode 100644 index 0000000..3b5182c --- /dev/null +++ b/gcc/cp/vec.cc @@ -0,0 +1,140 @@ +// new abi support -*- C++ -*- +// Copyright (C) 2000 +// Free Software Foundation, Inc. +// Written by Nathan Sidwell, Codesourcery LLC, <nathan@codesourcery.com> +// +// GNU CC 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. + +// GNU CC 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 GNU CC; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, +// Boston, MA 02111-1307, USA. + +// As a special exception, if you link this library with other files, +// some of which are compiled with GCC, to produce an executable, +// this library 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. + +#if defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 +#include <cxxabi.h> + +namespace __cxxabiv1 +{ + +/* allocate and construct array */ +void * +__cxa_vec_new (size_t element_count, + size_t element_size, + size_t padding_size, + void (*constructor) (void *), + void (*destructor) (void *)) +{ + size_t size = element_count * element_size + padding_size; + char *base = static_cast <char *> (operator new[] (size)); + + if (padding_size) + { + base += padding_size; + reinterpret_cast <size_t *> (base)[-1] = element_count; + } + try + { + __cxa_vec_ctor (base, element_count, element_size, + constructor, destructor); + } + catch (...) + { + operator delete[] (base - padding_size); + throw; + } + return base; +} + +/* construct array */ +void +__cxa_vec_ctor (void *array_address, + size_t element_count, + size_t element_size, + void (*constructor) (void *), + void (*destructor) (void *)) +{ + size_t ix = 0; + char *ptr = static_cast <char *> (array_address); + + try + { + if (constructor) + for (; ix != element_count; ix++, ptr += element_size) + constructor (ptr); + } + catch (...) + { + try + { + if (destructor) + for (; ix--; ptr -= element_size) + destructor (ptr); + } + catch (...) + { + // [except.ctor]/3 If a destructor called during stack unwinding + // exists with an exception, terminate is called. + std::terminate (); + } + throw; + } +} + +/* destruct array */ +void +__cxa_vec_dtor (void *array_address, + size_t element_count, + size_t element_size, + void (*destructor) (void *)) +{ + if (destructor) + { + char *ptr = static_cast <char *> (array_address); + + ptr += element_count * element_size; + + for (size_t ix = element_count; ix--;) + { + ptr -= element_size; + destructor (ptr); + } + } +} + +/* destruct and release array */ +void +__cxa_vec_delete (void *array_address, + size_t element_size, + size_t padding_size, + void (*destructor) (void *)) +{ + char *base = static_cast <char *> (array_address); + + if (padding_size) + { + size_t element_count = reinterpret_cast <size_t *> (base)[-1]; + + __cxa_vec_dtor (base, element_count, element_size, destructor); + base -= padding_size; + } + operator delete[] (base); +} + +} // namespace __cxxabiv1 + +#endif // defined(__GXX_ABI_VERSION) && __GXX_ABI_VERSION >= 100 |