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Diffstat (limited to 'gcc/ada/g-cppexc.adb')
| -rw-r--r-- | gcc/ada/g-cppexc.adb | 139 |
1 files changed, 0 insertions, 139 deletions
diff --git a/gcc/ada/g-cppexc.adb b/gcc/ada/g-cppexc.adb deleted file mode 100644 index d89cf0c..0000000 --- a/gcc/ada/g-cppexc.adb +++ /dev/null @@ -1,139 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- G N A T . C P P _ E X C E P T I O N S -- --- -- --- B o d y -- --- -- --- Copyright (C) 2013, AdaCore -- --- -- --- GNAT is free software; you can redistribute it and/or modify it under -- --- terms of the GNU General Public License as published by the Free Soft- -- --- ware Foundation; either version 3, or (at your option) any later ver- -- --- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- --- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- --- or FITNESS FOR A PARTICULAR PURPOSE. -- --- -- --- As a special exception under Section 7 of GPL version 3, you are granted -- --- additional permissions described in the GCC Runtime Library Exception, -- --- version 3.1, as published by the Free Software Foundation. -- --- -- --- You should have received a copy of the GNU General Public License and -- --- a copy of the GCC Runtime Library Exception along with this program; -- --- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- --- <http://www.gnu.org/licenses/>. -- --- -- --- GNAT was originally developed by the GNAT team at New York University. -- --- Extensive contributions were provided by Ada Core Technologies Inc. -- --- -- ------------------------------------------------------------------------------- - -with System; -with System.Storage_Elements; -with Interfaces.C; use Interfaces.C; -with Ada.Unchecked_Conversion; -with System.Standard_Library; use System.Standard_Library; - -package body GNAT.CPP_Exceptions is - - -- Note: all functions prefixed by __cxa are part of the c++ ABI for - -- exception handling. As they are provided by the c++ library, there - -- must be no dependencies on it in the compiled code of this unit, but - -- there can be dependencies in instances. This is required to be able - -- to build the shared library without the c++ library. - - function To_Exception_Data_Ptr is new - Ada.Unchecked_Conversion - (Exception_Id, Exception_Data_Ptr); - -- Convert an Exception_Id to its non-private type. This is used to get - -- the RTTI of a C++ exception - - function Get_Exception_Machine_Occurrence - (X : Exception_Occurrence) return System.Address; - pragma Import (Ada, Get_Exception_Machine_Occurrence, - "__gnat_get_exception_machine_occurrence"); - -- Imported function (from Ada.Exceptions) that returns the machine - -- occurrence from an exception occurrence. - - ------------------------- - -- Raise_Cpp_Exception -- - ------------------------- - - procedure Raise_Cpp_Exception (Id : Exception_Id; Value : T) - is - Id_Data : constant Exception_Data_Ptr := To_Exception_Data_Ptr (Id); - -- Get a non-private view on the exception - - type T_Acc is access all T; - pragma Convention (C, T_Acc); - -- Access type to the object compatible with C - - Occ : T_Acc; - -- The occurrence to propagate - - function cxa_allocate_exception (Size : size_t) return T_Acc; - pragma Import (C, cxa_allocate_exception, "__cxa_allocate_exception"); - -- The C++ function to allocate an occurrence - - procedure cxa_throw (Obj : T_Acc; Tinfo : System.Address; - Dest : System.Address); - pragma Import (C, cxa_throw, "__cxa_throw"); - pragma No_Return (cxa_throw); - -- The C++ function to raise an exception - begin - -- Check the exception was imported from C++ - - if Id_Data.Lang /= 'C' then - raise Constraint_Error; - end if; - - -- Allocate the C++ occurrence - - Occ := cxa_allocate_exception (T'Size / System.Storage_Unit); - - -- Set the object - - Occ.all := Value; - - -- Throw the exception - - cxa_throw (Occ, Id_Data.Foreign_Data, System.Null_Address); - end Raise_Cpp_Exception; - - ---------------- - -- Get_Object -- - ---------------- - - function Get_Object (X : Exception_Occurrence) return T - is - use System; - use System.Storage_Elements; - - Unwind_Exception_Size : Natural; - pragma Import (C, Unwind_Exception_Size, "__gnat_unwind_exception_size"); - -- Size in bytes of _Unwind_Exception - - Exception_Addr : constant Address := - Get_Exception_Machine_Occurrence (X); - -- Machine occurrence of X - - begin - -- Check the machine occurrence exists - - if Exception_Addr = Null_Address then - raise Constraint_Error; - end if; - - declare - -- Import the object from the occurrence - Result : T; - pragma Import (Ada, Result); - for Result'Address use - Exception_Addr + Storage_Offset (Unwind_Exception_Size); - begin - -- And return it - return Result; - end; - end Get_Object; -end GNAT.CPP_Exceptions; |