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diff --git a/gcc/ada/a-except-2005.ads b/gcc/ada/a-except-2005.ads deleted file mode 100644 index cb2b2976e4a..00000000000 --- a/gcc/ada/a-except-2005.ads +++ /dev/null @@ -1,349 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- A D A . E X C E P T I O N S -- --- -- --- S p e c -- --- -- --- Copyright (C) 1992-2015, Free Software Foundation, Inc. -- --- -- --- This specification is derived from the Ada Reference Manual for use with -- --- GNAT. The copyright notice above, and the license provisions that follow -- --- apply solely to the contents of the part following the private keyword. -- --- -- --- 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. -- --- -- ------------------------------------------------------------------------------- - --- This version of Ada.Exceptions fully supports Ada 95 and later language --- versions. It is used in all situations except for the build of the --- compiler and other basic tools. For these latter builds, we use an --- Ada 95-only version. - --- The reason for this splitting off of a separate version is to support --- older bootstrap compilers that do not support Ada 2005 features, and --- Ada.Exceptions is part of the compiler sources. - -pragma Polling (Off); --- We must turn polling off for this unit, because otherwise we get --- elaboration circularities with ourself. - -with System; -with System.Parameters; -with System.Standard_Library; -with System.Traceback_Entries; - -package Ada.Exceptions is - pragma Preelaborate; - -- In accordance with Ada 2005 AI-362. - - type Exception_Id is private; - pragma Preelaborable_Initialization (Exception_Id); - - Null_Id : constant Exception_Id; - - type Exception_Occurrence is limited private; - pragma Preelaborable_Initialization (Exception_Occurrence); - - type Exception_Occurrence_Access is access all Exception_Occurrence; - - Null_Occurrence : constant Exception_Occurrence; - - function Exception_Name (Id : Exception_Id) return String; - - function Exception_Name (X : Exception_Occurrence) return String; - - function Wide_Exception_Name - (Id : Exception_Id) return Wide_String; - pragma Ada_05 (Wide_Exception_Name); - - function Wide_Exception_Name - (X : Exception_Occurrence) return Wide_String; - pragma Ada_05 (Wide_Exception_Name); - - function Wide_Wide_Exception_Name - (Id : Exception_Id) return Wide_Wide_String; - pragma Ada_05 (Wide_Wide_Exception_Name); - - function Wide_Wide_Exception_Name - (X : Exception_Occurrence) return Wide_Wide_String; - pragma Ada_05 (Wide_Wide_Exception_Name); - - procedure Raise_Exception (E : Exception_Id; Message : String := ""); - pragma No_Return (Raise_Exception); - -- Note: In accordance with AI-466, CE is raised if E = Null_Id - - function Exception_Message (X : Exception_Occurrence) return String; - - procedure Reraise_Occurrence (X : Exception_Occurrence); - -- Note: it would be really nice to give a pragma No_Return for this - -- procedure, but it would be wrong, since Reraise_Occurrence does return - -- if the argument is the null exception occurrence. See also procedure - -- Reraise_Occurrence_Always in the private part of this package. - - function Exception_Identity (X : Exception_Occurrence) return Exception_Id; - - function Exception_Information (X : Exception_Occurrence) return String; - -- The format of the exception information is as follows: - -- - -- exception name (as in Exception_Name) - -- message (or a null line if no message) - -- PID=nnnn - -- 0xyyyyyyyy 0xyyyyyyyy ... - -- - -- The lines are separated by a ASCII.LF character - -- - -- The nnnn is the partition Id given as decimal digits - -- - -- The 0x... line represents traceback program counter locations, - -- in order with the first one being the exception location. - - -- Note on ordering: the compiler uses the Save_Occurrence procedure, but - -- not the function from Rtsfind, so it is important that the procedure - -- come first, since Rtsfind finds the first matching entity. - - procedure Save_Occurrence - (Target : out Exception_Occurrence; - Source : Exception_Occurrence); - - function Save_Occurrence - (Source : Exception_Occurrence) - return Exception_Occurrence_Access; - - -- Ada 2005 (AI-438): The language revision introduces the following - -- subprograms and attribute definitions. We do not provide them - -- explicitly. instead, the corresponding stream attributes are made - -- available through a pragma Stream_Convert in the private part. - - -- procedure Read_Exception_Occurrence - -- (Stream : not null access Ada.Streams.Root_Stream_Type'Class; - -- Item : out Exception_Occurrence); - - -- procedure Write_Exception_Occurrence - -- (Stream : not null access Ada.Streams.Root_Stream_Type'Class; - -- Item : Exception_Occurrence); - - -- for Exception_Occurrence'Read use Read_Exception_Occurrence; - -- for Exception_Occurrence'Write use Write_Exception_Occurrence; - -private - package SSL renames System.Standard_Library; - package SP renames System.Parameters; - - subtype EOA is Exception_Occurrence_Access; - - Exception_Msg_Max_Length : constant := SP.Default_Exception_Msg_Max_Length; - - ------------------ - -- Exception_Id -- - ------------------ - - subtype Code_Loc is System.Address; - -- Code location used in building exception tables and for call addresses - -- when propagating an exception. Values of this type are created by using - -- Label'Address or extracted from machine states using Get_Code_Loc. - - Null_Loc : constant Code_Loc := System.Null_Address; - -- Null code location, used to flag outer level frame - - type Exception_Id is new SSL.Exception_Data_Ptr; - - function EId_To_String (X : Exception_Id) return String; - function String_To_EId (S : String) return Exception_Id; - pragma Stream_Convert (Exception_Id, String_To_EId, EId_To_String); - -- Functions for implementing Exception_Id stream attributes - - Null_Id : constant Exception_Id := null; - - ------------------------- - -- Private Subprograms -- - ------------------------- - - function Exception_Name_Simple (X : Exception_Occurrence) return String; - -- Like Exception_Name, but returns the simple non-qualified name of the - -- exception. This is used to implement the Exception_Name function in - -- Current_Exceptions (the DEC compatible unit). It is called from the - -- compiler generated code (using Rtsfind, which does not respect the - -- private barrier, so we can place this function in the private part - -- where the compiler can find it, but the spec is unchanged.) - - procedure Raise_Exception_Always (E : Exception_Id; Message : String := ""); - pragma No_Return (Raise_Exception_Always); - pragma Export (Ada, Raise_Exception_Always, "__gnat_raise_exception"); - -- This differs from Raise_Exception only in that the caller has determined - -- that for sure the parameter E is not null, and that therefore no check - -- for Null_Id is required. The expander converts Raise_Exception calls to - -- Raise_Exception_Always if it can determine this is the case. The Export - -- allows this routine to be accessed from Pure units. - - procedure Raise_From_Signal_Handler - (E : Exception_Id; - M : System.Address); - pragma Export - (Ada, Raise_From_Signal_Handler, - "ada__exceptions__raise_from_signal_handler"); - pragma No_Return (Raise_From_Signal_Handler); - -- This routine is used to raise an exception from a signal handler. The - -- signal handler has already stored the machine state (i.e. the state that - -- corresponds to the location at which the signal was raised). E is the - -- Exception_Id specifying what exception is being raised, and M is a - -- pointer to a null-terminated string which is the message to be raised. - -- Note that this routine never returns, so it is permissible to simply - -- jump to this routine, rather than call it. This may be appropriate for - -- systems where the right way to get out of signal handler is to alter the - -- PC value in the machine state or in some other way ask the operating - -- system to return here rather than to the original location. - - procedure Raise_From_Controlled_Operation - (X : Ada.Exceptions.Exception_Occurrence); - pragma No_Return (Raise_From_Controlled_Operation); - pragma Export - (Ada, Raise_From_Controlled_Operation, - "__gnat_raise_from_controlled_operation"); - -- Raise Program_Error, providing information about X (an exception raised - -- during a controlled operation) in the exception message. - - procedure Reraise_Library_Exception_If_Any; - pragma Export - (Ada, Reraise_Library_Exception_If_Any, - "__gnat_reraise_library_exception_if_any"); - -- If there was an exception raised during library-level finalization, - -- reraise the exception. - - procedure Reraise_Occurrence_Always (X : Exception_Occurrence); - pragma No_Return (Reraise_Occurrence_Always); - -- This differs from Raise_Occurrence only in that the caller guarantees - -- that for sure the parameter X is not the null occurrence, and that - -- therefore this procedure cannot return. The expander uses this routine - -- in the translation of a raise statement with no parameter (reraise). - - procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence); - pragma No_Return (Reraise_Occurrence_No_Defer); - -- Exactly like Reraise_Occurrence, except that abort is not deferred - -- before the call and the parameter X is known not to be the null - -- occurrence. This is used in generated code when it is known that abort - -- is already deferred. - - function Triggered_By_Abort return Boolean; - -- Determine whether the current exception (if it exists) is an instance of - -- Standard'Abort_Signal. - - ----------------------- - -- Polling Interface -- - ----------------------- - - -- The GNAT compiler has an option to generate polling calls to the Poll - -- routine in this package. Specifying the -gnatP option for a compilation - -- causes a call to Ada.Exceptions.Poll to be generated on every subprogram - -- entry and on every iteration of a loop, thus avoiding the possibility of - -- a case of unbounded time between calls. - - -- This polling interface may be used for instrumentation or debugging - -- purposes (e.g. implementing watchpoints in software or in the debugger). - - -- In the GNAT technology itself, this interface is used to implement - -- immediate asynchronous transfer of control and immediate abort on - -- targets which do not provide for one thread interrupting another. - - -- Note: this used to be in a separate unit called System.Poll, but that - -- caused horrible circular elaboration problems between System.Poll and - -- Ada.Exceptions. - - procedure Poll; - -- Check for asynchronous abort. Note that we do not inline the body. - -- This makes the interface more useful for debugging purposes. - - -------------------------- - -- Exception_Occurrence -- - -------------------------- - - package TBE renames System.Traceback_Entries; - - Max_Tracebacks : constant := 50; - -- Maximum number of trace backs stored in exception occurrence - - subtype Tracebacks_Array is TBE.Tracebacks_Array (1 .. Max_Tracebacks); - -- Traceback array stored in exception occurrence - - type Exception_Occurrence is record - Id : Exception_Id; - -- Exception_Identity for this exception occurrence - - Machine_Occurrence : System.Address; - -- The underlying machine occurrence. For GCC, this corresponds to the - -- _Unwind_Exception structure address. - - Msg_Length : Natural := 0; - -- Length of message (zero = no message) - - Msg : String (1 .. Exception_Msg_Max_Length); - -- Characters of message - - Exception_Raised : Boolean := False; - -- Set to true to indicate that this exception occurrence has actually - -- been raised. When an exception occurrence is first created, this is - -- set to False, then when it is processed by Raise_Current_Exception, - -- it is set to True. If Raise_Current_Exception is used to raise an - -- exception for which this flag is already True, then it knows that - -- it is dealing with the reraise case (which is useful to distinguish - -- for exception tracing purposes). - - Pid : Natural := 0; - -- Partition_Id for partition raising exception - - Num_Tracebacks : Natural range 0 .. Max_Tracebacks := 0; - -- Number of traceback entries stored - - Tracebacks : Tracebacks_Array; - -- Stored tracebacks (in Tracebacks (1 .. Num_Tracebacks)) - end record; - - function "=" (Left, Right : Exception_Occurrence) return Boolean - is abstract; - -- Don't allow comparison on exception occurrences, we should not need - -- this, and it would not work right, because of the Msg and Tracebacks - -- fields which have unused entries not copied by Save_Occurrence. - - function Get_Exception_Machine_Occurrence - (X : Exception_Occurrence) return System.Address; - pragma Export (Ada, Get_Exception_Machine_Occurrence, - "__gnat_get_exception_machine_occurrence"); - -- Get the machine occurrence corresponding to an exception occurrence. - -- It is Null_Address if there is no machine occurrence (in runtimes that - -- doesn't use GCC mechanism) or if it has been lost (Save_Occurrence - -- doesn't save the machine occurrence). - - function EO_To_String (X : Exception_Occurrence) return String; - function String_To_EO (S : String) return Exception_Occurrence; - pragma Stream_Convert (Exception_Occurrence, String_To_EO, EO_To_String); - -- Functions for implementing Exception_Occurrence stream attributes - - Null_Occurrence : constant Exception_Occurrence := ( - Id => null, - Machine_Occurrence => System.Null_Address, - Msg_Length => 0, - Msg => (others => ' '), - Exception_Raised => False, - Pid => 0, - Num_Tracebacks => 0, - Tracebacks => (others => TBE.Null_TB_Entry)); - -end Ada.Exceptions; |