------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- A D A . E X C E P T I O N S --
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2017, Free Software Foundation, Inc. --
-- --
-- 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 --
-- . --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
pragma Style_Checks (All_Checks);
-- No subprogram ordering check, due to logical grouping
pragma Polling (Off);
-- We must turn polling off for this unit, because otherwise we get
-- elaboration circularities with System.Exception_Tables.
with System; use System;
with System.Exceptions; use System.Exceptions;
with System.Exceptions_Debug; use System.Exceptions_Debug;
with System.Standard_Library; use System.Standard_Library;
with System.Soft_Links; use System.Soft_Links;
with System.WCh_Con; use System.WCh_Con;
with System.WCh_StW; use System.WCh_StW;
pragma Warnings (Off);
-- Suppress complaints about Symbolic not being referenced, and about it not
-- having pragma Preelaborate.
with System.Traceback.Symbolic;
-- Bring Symbolic into the closure. If it is the s-trasym-dwarf.adb version,
-- it will install symbolic tracebacks as the default decorator. Otherwise,
-- symbolic tracebacks are not supported, and we fall back to hexadecimal
-- addresses.
pragma Warnings (On);
package body Ada.Exceptions is
pragma Suppress (All_Checks);
-- We definitely do not want exceptions occurring within this unit, or
-- we are in big trouble. If an exceptional situation does occur, better
-- that it not be raised, since raising it can cause confusing chaos.
-----------------------
-- Local Subprograms --
-----------------------
-- Note: the exported subprograms in this package body are called directly
-- from C clients using the given external name, even though they are not
-- technically visible in the Ada sense.
function Code_Address_For_AAA return System.Address;
function Code_Address_For_ZZZ return System.Address;
-- Return start and end of procedures in this package
--
-- These procedures are used to provide exclusion bounds in
-- calls to Call_Chain at exception raise points from this unit. The
-- purpose is to arrange for the exception tracebacks not to include
-- frames from subprograms involved in the raise process, as these are
-- meaningless from the user's standpoint.
--
-- For these bounds to be meaningful, we need to ensure that the object
-- code for the subprograms involved in processing a raise is located
-- after the object code Code_Address_For_AAA and before the object
-- code Code_Address_For_ZZZ. This will indeed be the case as long as
-- the following rules are respected:
--
-- 1) The bodies of the subprograms involved in processing a raise
-- are located after the body of Code_Address_For_AAA and before the
-- body of Code_Address_For_ZZZ.
--
-- 2) No pragma Inline applies to any of these subprograms, as this
-- could delay the corresponding assembly output until the end of
-- the unit.
procedure Call_Chain (Excep : EOA);
-- Store up to Max_Tracebacks in Excep, corresponding to the current
-- call chain.
function Image (Index : Integer) return String;
-- Return string image corresponding to Index
procedure To_Stderr (S : String);
pragma Export (Ada, To_Stderr, "__gnat_to_stderr");
-- Little routine to output string to stderr that is also used
-- in the tasking run time.
procedure To_Stderr (C : Character);
pragma Inline (To_Stderr);
pragma Export (Ada, To_Stderr, "__gnat_to_stderr_char");
-- Little routine to output a character to stderr, used by some of
-- the separate units below.
package Exception_Data is
-----------------------------------
-- Exception Message Subprograms --
-----------------------------------
procedure Set_Exception_C_Msg
(Excep : EOA;
Id : Exception_Id;
Msg1 : System.Address;
Line : Integer := 0;
Column : Integer := 0;
Msg2 : System.Address := System.Null_Address);
-- This routine is called to setup the exception referenced by X
-- to contain the indicated Id value and message. Msg1 is a null
-- terminated string which is generated as the exception message. If
-- line is non-zero, then a colon and the decimal representation of
-- this integer is appended to the message. Ditto for Column. When Msg2
-- is non-null, a space and this additional null terminated string is
-- added to the message.
procedure Set_Exception_Msg
(Excep : EOA;
Id : Exception_Id;
Message : String);
-- This routine is called to setup the exception referenced by X
-- to contain the indicated Id value and message. Message is a string
-- which is generated as the exception message.
---------------------------------------
-- Exception Information Subprograms --
---------------------------------------
function Untailored_Exception_Information
(X : Exception_Occurrence) return String;
-- This is used by Stream_Attributes.EO_To_String to convert an
-- Exception_Occurrence to a String for the stream attributes.
-- String_To_EO understands the format, as documented here.
--
-- The format of the string is as follows:
--
-- raised :
-- (" : " is present only if Exception_Message is not empty)
-- PID=nnnn (only if nonzero)
-- Call stack traceback locations: (only if at least one location)
-- <0xyyyyyyyy 0xyyyyyyyy ...> (is recorded)
--
-- 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
-- execution order with the first one being the exception location.
--
-- The Exception_Name and Message lines are omitted in the abort
-- signal case, since this is not really an exception.
--
-- Note: If the format of the generated string is changed, please note
-- that an equivalent modification to the routine String_To_EO must be
-- made to preserve proper functioning of the stream attributes.
function Exception_Information (X : Exception_Occurrence) return String;
-- This is the implementation of Ada.Exceptions.Exception_Information,
-- as defined in the Ada RM.
--
-- If no traceback decorator (see GNAT.Exception_Traces) is currently
-- in place, this is the same as Untailored_Exception_Information.
-- Otherwise, the decorator is used to produce a symbolic traceback
-- instead of hexadecimal addresses.
--
-- Note that unlike Untailored_Exception_Information, there is no need
-- to keep the output of Exception_Information stable for streaming
-- purposes, and in fact the output differs across platforms.
end Exception_Data;
package Exception_Traces is
-------------------------------------------------
-- Run-Time Exception Notification Subprograms --
-------------------------------------------------
-- These subprograms provide a common run-time interface to trigger the
-- actions required when an exception is about to be propagated (e.g.
-- user specified actions or output of exception information). They are
-- exported to be usable by the Ada exception handling personality
-- routine when the GCC 3 mechanism is used.
procedure Notify_Handled_Exception (Excep : EOA);
pragma Export
(C, Notify_Handled_Exception, "__gnat_notify_handled_exception");
-- This routine is called for a handled occurrence is about to be
-- propagated.
procedure Notify_Unhandled_Exception (Excep : EOA);
pragma Export
(C, Notify_Unhandled_Exception, "__gnat_notify_unhandled_exception");
-- This routine is called when an unhandled occurrence is about to be
-- propagated.
procedure Unhandled_Exception_Terminate (Excep : EOA);
pragma No_Return (Unhandled_Exception_Terminate);
-- This procedure is called to terminate execution following an
-- unhandled exception. The exception information, including
-- traceback if available is output, and execution is then
-- terminated. Note that at the point where this routine is
-- called, the stack has typically been destroyed.
end Exception_Traces;
package Exception_Propagation is
---------------------------------------
-- Exception Propagation Subprograms --
---------------------------------------
function Allocate_Occurrence return EOA;
-- Allocate an exception occurrence (as well as the machine occurrence)
procedure Propagate_Exception (Excep : EOA);
pragma No_Return (Propagate_Exception);
-- This procedure propagates the exception represented by Excep
end Exception_Propagation;
package Stream_Attributes is
----------------------------------
-- Stream Attribute Subprograms --
----------------------------------
function EId_To_String (X : Exception_Id) return String;
function String_To_EId (S : String) return Exception_Id;
-- Functions for implementing Exception_Id stream attributes
function EO_To_String (X : Exception_Occurrence) return String;
function String_To_EO (S : String) return Exception_Occurrence;
-- Functions for implementing Exception_Occurrence stream
-- attributes
end Stream_Attributes;
procedure Complete_Occurrence (X : EOA);
-- Finish building the occurrence: save the call chain and notify the
-- debugger.
procedure Complete_And_Propagate_Occurrence (X : EOA);
pragma No_Return (Complete_And_Propagate_Occurrence);
-- This is a simple wrapper to Complete_Occurrence and
-- Exception_Propagation.Propagate_Exception.
function Create_Occurrence_From_Signal_Handler
(E : Exception_Id;
M : System.Address) return EOA;
-- Create and build an exception occurrence using exception id E and
-- nul-terminated message M.
function Create_Machine_Occurrence_From_Signal_Handler
(E : Exception_Id;
M : System.Address) return System.Address;
pragma Export (C, Create_Machine_Occurrence_From_Signal_Handler,
"__gnat_create_machine_occurrence_from_signal_handler");
-- Create and build an exception occurrence using exception id E and
-- nul-terminated message M. Return the machine occurrence.
procedure Raise_Exception_No_Defer
(E : Exception_Id;
Message : String := "");
pragma Export
(Ada, Raise_Exception_No_Defer,
"ada__exceptions__raise_exception_no_defer");
pragma No_Return (Raise_Exception_No_Defer);
-- Similar to Raise_Exception, but with no abort deferral
procedure Raise_With_Msg (E : Exception_Id);
pragma No_Return (Raise_With_Msg);
pragma Export (C, Raise_With_Msg, "__gnat_raise_with_msg");
-- Raises an exception with given exception id value. A message
-- is associated with the raise, and has already been stored in the
-- exception occurrence referenced by the Current_Excep in the TSD.
-- Abort is deferred before the raise call.
procedure Raise_With_Location_And_Msg
(E : Exception_Id;
F : System.Address;
L : Integer;
C : Integer := 0;
M : System.Address := System.Null_Address);
pragma No_Return (Raise_With_Location_And_Msg);
-- Raise an exception with given exception id value. A filename and line
-- number is associated with the raise and is stored in the exception
-- occurrence and in addition a column and a string message M may be
-- appended to this (if not null/0).
procedure Raise_Constraint_Error (File : System.Address; Line : Integer);
pragma No_Return (Raise_Constraint_Error);
pragma Export (C, Raise_Constraint_Error, "__gnat_raise_constraint_error");
-- Raise constraint error with file:line information
procedure Raise_Constraint_Error_Msg
(File : System.Address;
Line : Integer;
Column : Integer;
Msg : System.Address);
pragma No_Return (Raise_Constraint_Error_Msg);
pragma Export
(C, Raise_Constraint_Error_Msg, "__gnat_raise_constraint_error_msg");
-- Raise constraint error with file:line:col + msg information
procedure Raise_Program_Error (File : System.Address; Line : Integer);
pragma No_Return (Raise_Program_Error);
pragma Export (C, Raise_Program_Error, "__gnat_raise_program_error");
-- Raise program error with file:line information
procedure Raise_Program_Error_Msg
(File : System.Address;
Line : Integer;
Msg : System.Address);
pragma No_Return (Raise_Program_Error_Msg);
pragma Export
(C, Raise_Program_Error_Msg, "__gnat_raise_program_error_msg");
-- Raise program error with file:line + msg information
procedure Raise_Storage_Error (File : System.Address; Line : Integer);
pragma No_Return (Raise_Storage_Error);
pragma Export (C, Raise_Storage_Error, "__gnat_raise_storage_error");
-- Raise storage error with file:line information
procedure Raise_Storage_Error_Msg
(File : System.Address;
Line : Integer;
Msg : System.Address);
pragma No_Return (Raise_Storage_Error_Msg);
pragma Export
(C, Raise_Storage_Error_Msg, "__gnat_raise_storage_error_msg");
-- Raise storage error with file:line + reason msg information
-- The exception raising process and the automatic tracing mechanism rely
-- on some careful use of flags attached to the exception occurrence. The
-- graph below illustrates the relations between the Raise_ subprograms
-- and identifies the points where basic flags such as Exception_Raised
-- are initialized.
-- (i) signs indicate the flags initialization points. R stands for Raise,
-- W for With, and E for Exception.
-- R_No_Msg R_E R_Pe R_Ce R_Se
-- | | | | |
-- +--+ +--+ +---+ | +---+
-- | | | | |
-- R_E_No_Defer(i) R_W_Msg(i) R_W_Loc
-- | | | |
-- +------------+ | +-----------+ +--+
-- | | | |
-- | | | Set_E_C_Msg(i)
-- | | |
-- Complete_And_Propagate_Occurrence
procedure Reraise;
pragma No_Return (Reraise);
pragma Export (C, Reraise, "__gnat_reraise");
-- Reraises the exception referenced by the Current_Excep field
-- of the TSD (all fields of this exception occurrence are set).
-- Abort is deferred before the reraise operation. Called from
-- System.Tasking.RendezVous.Exceptional_Complete_RendezVous
procedure Transfer_Occurrence
(Target : Exception_Occurrence_Access;
Source : Exception_Occurrence);
pragma Export (C, Transfer_Occurrence, "__gnat_transfer_occurrence");
-- Called from s-tasren.adb:Local_Complete_RendezVous and
-- s-tpobop.adb:Exceptional_Complete_Entry_Body to setup Target from
-- Source as an exception to be propagated in the caller task. Target is
-- expected to be a pointer to the fixed TSD occurrence for this task.
--------------------------------
-- Run-Time Check Subprograms --
--------------------------------
-- These subprograms raise a specific exception with a reason message
-- attached. The parameters are the file name and line number in each
-- case. The names are defined by Exp_Ch11.Get_RT_Exception_Name.
procedure Rcheck_CE_Access_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Null_Access_Parameter
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Discriminant_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Divide_By_Zero
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Explicit_Raise
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Index_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Invalid_Data
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Length_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Null_Exception_Id
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Null_Not_Allowed
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Overflow_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Partition_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Range_Check
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Tag_Check
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Access_Before_Elaboration
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Accessibility_Check
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Address_Of_Intrinsic
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Aliased_Parameters
(File : System.Address; Line : Integer);
procedure Rcheck_PE_All_Guards_Closed
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Bad_Predicated_Generic_Type
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Current_Task_In_Entry_Body
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Duplicated_Entry_Address
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Explicit_Raise
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Implicit_Return
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Misaligned_Address_Value
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Missing_Return
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Non_Transportable_Actual
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Overlaid_Controlled_Object
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Potentially_Blocking_Operation
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Stubbed_Subprogram_Called
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Unchecked_Union_Restriction
(File : System.Address; Line : Integer);
procedure Rcheck_SE_Empty_Storage_Pool
(File : System.Address; Line : Integer);
procedure Rcheck_SE_Explicit_Raise
(File : System.Address; Line : Integer);
procedure Rcheck_SE_Infinite_Recursion
(File : System.Address; Line : Integer);
procedure Rcheck_SE_Object_Too_Large
(File : System.Address; Line : Integer);
procedure Rcheck_PE_Stream_Operation_Not_Allowed
(File : System.Address; Line : Integer);
procedure Rcheck_CE_Access_Check_Ext
(File : System.Address; Line, Column : Integer);
procedure Rcheck_CE_Index_Check_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer);
procedure Rcheck_CE_Invalid_Data_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer);
procedure Rcheck_CE_Range_Check_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer);
procedure Rcheck_PE_Finalize_Raised_Exception
(File : System.Address; Line : Integer);
-- This routine is separated out because it has quite different behavior
-- from the others. This is the "finalize/adjust raised exception". This
-- subprogram is always called with abort deferred, unlike all other
-- Rcheck_* subprograms, it needs to call Raise_Exception_No_Defer.
pragma Export (C, Rcheck_CE_Access_Check,
"__gnat_rcheck_CE_Access_Check");
pragma Export (C, Rcheck_CE_Null_Access_Parameter,
"__gnat_rcheck_CE_Null_Access_Parameter");
pragma Export (C, Rcheck_CE_Discriminant_Check,
"__gnat_rcheck_CE_Discriminant_Check");
pragma Export (C, Rcheck_CE_Divide_By_Zero,
"__gnat_rcheck_CE_Divide_By_Zero");
pragma Export (C, Rcheck_CE_Explicit_Raise,
"__gnat_rcheck_CE_Explicit_Raise");
pragma Export (C, Rcheck_CE_Index_Check,
"__gnat_rcheck_CE_Index_Check");
pragma Export (C, Rcheck_CE_Invalid_Data,
"__gnat_rcheck_CE_Invalid_Data");
pragma Export (C, Rcheck_CE_Length_Check,
"__gnat_rcheck_CE_Length_Check");
pragma Export (C, Rcheck_CE_Null_Exception_Id,
"__gnat_rcheck_CE_Null_Exception_Id");
pragma Export (C, Rcheck_CE_Null_Not_Allowed,
"__gnat_rcheck_CE_Null_Not_Allowed");
pragma Export (C, Rcheck_CE_Overflow_Check,
"__gnat_rcheck_CE_Overflow_Check");
pragma Export (C, Rcheck_CE_Partition_Check,
"__gnat_rcheck_CE_Partition_Check");
pragma Export (C, Rcheck_CE_Range_Check,
"__gnat_rcheck_CE_Range_Check");
pragma Export (C, Rcheck_CE_Tag_Check,
"__gnat_rcheck_CE_Tag_Check");
pragma Export (C, Rcheck_PE_Access_Before_Elaboration,
"__gnat_rcheck_PE_Access_Before_Elaboration");
pragma Export (C, Rcheck_PE_Accessibility_Check,
"__gnat_rcheck_PE_Accessibility_Check");
pragma Export (C, Rcheck_PE_Address_Of_Intrinsic,
"__gnat_rcheck_PE_Address_Of_Intrinsic");
pragma Export (C, Rcheck_PE_Aliased_Parameters,
"__gnat_rcheck_PE_Aliased_Parameters");
pragma Export (C, Rcheck_PE_All_Guards_Closed,
"__gnat_rcheck_PE_All_Guards_Closed");
pragma Export (C, Rcheck_PE_Bad_Predicated_Generic_Type,
"__gnat_rcheck_PE_Bad_Predicated_Generic_Type");
pragma Export (C, Rcheck_PE_Current_Task_In_Entry_Body,
"__gnat_rcheck_PE_Current_Task_In_Entry_Body");
pragma Export (C, Rcheck_PE_Duplicated_Entry_Address,
"__gnat_rcheck_PE_Duplicated_Entry_Address");
pragma Export (C, Rcheck_PE_Explicit_Raise,
"__gnat_rcheck_PE_Explicit_Raise");
pragma Export (C, Rcheck_PE_Finalize_Raised_Exception,
"__gnat_rcheck_PE_Finalize_Raised_Exception");
pragma Export (C, Rcheck_PE_Implicit_Return,
"__gnat_rcheck_PE_Implicit_Return");
pragma Export (C, Rcheck_PE_Misaligned_Address_Value,
"__gnat_rcheck_PE_Misaligned_Address_Value");
pragma Export (C, Rcheck_PE_Missing_Return,
"__gnat_rcheck_PE_Missing_Return");
pragma Export (C, Rcheck_PE_Non_Transportable_Actual,
"__gnat_rcheck_PE_Non_Transportable_Actual");
pragma Export (C, Rcheck_PE_Overlaid_Controlled_Object,
"__gnat_rcheck_PE_Overlaid_Controlled_Object");
pragma Export (C, Rcheck_PE_Potentially_Blocking_Operation,
"__gnat_rcheck_PE_Potentially_Blocking_Operation");
pragma Export (C, Rcheck_PE_Stream_Operation_Not_Allowed,
"__gnat_rcheck_PE_Stream_Operation_Not_Allowed");
pragma Export (C, Rcheck_PE_Stubbed_Subprogram_Called,
"__gnat_rcheck_PE_Stubbed_Subprogram_Called");
pragma Export (C, Rcheck_PE_Unchecked_Union_Restriction,
"__gnat_rcheck_PE_Unchecked_Union_Restriction");
pragma Export (C, Rcheck_SE_Empty_Storage_Pool,
"__gnat_rcheck_SE_Empty_Storage_Pool");
pragma Export (C, Rcheck_SE_Explicit_Raise,
"__gnat_rcheck_SE_Explicit_Raise");
pragma Export (C, Rcheck_SE_Infinite_Recursion,
"__gnat_rcheck_SE_Infinite_Recursion");
pragma Export (C, Rcheck_SE_Object_Too_Large,
"__gnat_rcheck_SE_Object_Too_Large");
pragma Export (C, Rcheck_CE_Access_Check_Ext,
"__gnat_rcheck_CE_Access_Check_ext");
pragma Export (C, Rcheck_CE_Index_Check_Ext,
"__gnat_rcheck_CE_Index_Check_ext");
pragma Export (C, Rcheck_CE_Invalid_Data_Ext,
"__gnat_rcheck_CE_Invalid_Data_ext");
pragma Export (C, Rcheck_CE_Range_Check_Ext,
"__gnat_rcheck_CE_Range_Check_ext");
-- None of these procedures ever returns (they raise an exception). By
-- using pragma No_Return, we ensure that any junk code after the call,
-- such as normal return epilogue stuff, can be eliminated).
pragma No_Return (Rcheck_CE_Access_Check);
pragma No_Return (Rcheck_CE_Null_Access_Parameter);
pragma No_Return (Rcheck_CE_Discriminant_Check);
pragma No_Return (Rcheck_CE_Divide_By_Zero);
pragma No_Return (Rcheck_CE_Explicit_Raise);
pragma No_Return (Rcheck_CE_Index_Check);
pragma No_Return (Rcheck_CE_Invalid_Data);
pragma No_Return (Rcheck_CE_Length_Check);
pragma No_Return (Rcheck_CE_Null_Exception_Id);
pragma No_Return (Rcheck_CE_Null_Not_Allowed);
pragma No_Return (Rcheck_CE_Overflow_Check);
pragma No_Return (Rcheck_CE_Partition_Check);
pragma No_Return (Rcheck_CE_Range_Check);
pragma No_Return (Rcheck_CE_Tag_Check);
pragma No_Return (Rcheck_PE_Access_Before_Elaboration);
pragma No_Return (Rcheck_PE_Accessibility_Check);
pragma No_Return (Rcheck_PE_Address_Of_Intrinsic);
pragma No_Return (Rcheck_PE_Aliased_Parameters);
pragma No_Return (Rcheck_PE_All_Guards_Closed);
pragma No_Return (Rcheck_PE_Bad_Predicated_Generic_Type);
pragma No_Return (Rcheck_PE_Current_Task_In_Entry_Body);
pragma No_Return (Rcheck_PE_Duplicated_Entry_Address);
pragma No_Return (Rcheck_PE_Explicit_Raise);
pragma No_Return (Rcheck_PE_Implicit_Return);
pragma No_Return (Rcheck_PE_Misaligned_Address_Value);
pragma No_Return (Rcheck_PE_Missing_Return);
pragma No_Return (Rcheck_PE_Non_Transportable_Actual);
pragma No_Return (Rcheck_PE_Overlaid_Controlled_Object);
pragma No_Return (Rcheck_PE_Potentially_Blocking_Operation);
pragma No_Return (Rcheck_PE_Stream_Operation_Not_Allowed);
pragma No_Return (Rcheck_PE_Stubbed_Subprogram_Called);
pragma No_Return (Rcheck_PE_Unchecked_Union_Restriction);
pragma No_Return (Rcheck_PE_Finalize_Raised_Exception);
pragma No_Return (Rcheck_SE_Empty_Storage_Pool);
pragma No_Return (Rcheck_SE_Explicit_Raise);
pragma No_Return (Rcheck_SE_Infinite_Recursion);
pragma No_Return (Rcheck_SE_Object_Too_Large);
pragma No_Return (Rcheck_CE_Access_Check_Ext);
pragma No_Return (Rcheck_CE_Index_Check_Ext);
pragma No_Return (Rcheck_CE_Invalid_Data_Ext);
pragma No_Return (Rcheck_CE_Range_Check_Ext);
---------------------------------------------
-- Reason Strings for Run-Time Check Calls --
---------------------------------------------
-- These strings are null-terminated and are used by Rcheck_nn. The
-- strings correspond to the definitions for Types.RT_Exception_Code.
use ASCII;
Rmsg_00 : constant String := "access check failed" & NUL;
Rmsg_01 : constant String := "access parameter is null" & NUL;
Rmsg_02 : constant String := "discriminant check failed" & NUL;
Rmsg_03 : constant String := "divide by zero" & NUL;
Rmsg_04 : constant String := "explicit raise" & NUL;
Rmsg_05 : constant String := "index check failed" & NUL;
Rmsg_06 : constant String := "invalid data" & NUL;
Rmsg_07 : constant String := "length check failed" & NUL;
Rmsg_08 : constant String := "null Exception_Id" & NUL;
Rmsg_09 : constant String := "null-exclusion check failed" & NUL;
Rmsg_10 : constant String := "overflow check failed" & NUL;
Rmsg_11 : constant String := "partition check failed" & NUL;
Rmsg_12 : constant String := "range check failed" & NUL;
Rmsg_13 : constant String := "tag check failed" & NUL;
Rmsg_14 : constant String := "access before elaboration" & NUL;
Rmsg_15 : constant String := "accessibility check failed" & NUL;
Rmsg_16 : constant String := "attempt to take address of" &
" intrinsic subprogram" & NUL;
Rmsg_17 : constant String := "aliased parameters" & NUL;
Rmsg_18 : constant String := "all guards closed" & NUL;
Rmsg_19 : constant String := "improper use of generic subtype" &
" with predicate" & NUL;
Rmsg_20 : constant String := "Current_Task referenced in entry" &
" body" & NUL;
Rmsg_21 : constant String := "duplicated entry address" & NUL;
Rmsg_22 : constant String := "explicit raise" & NUL;
Rmsg_23 : constant String := "finalize/adjust raised exception" & NUL;
Rmsg_24 : constant String := "implicit return with No_Return" & NUL;
Rmsg_25 : constant String := "misaligned address value" & NUL;
Rmsg_26 : constant String := "missing return" & NUL;
Rmsg_27 : constant String := "overlaid controlled object" & NUL;
Rmsg_28 : constant String := "potentially blocking operation" & NUL;
Rmsg_29 : constant String := "stubbed subprogram called" & NUL;
Rmsg_30 : constant String := "unchecked union restriction" & NUL;
Rmsg_31 : constant String := "actual/returned class-wide" &
" value not transportable" & NUL;
Rmsg_32 : constant String := "empty storage pool" & NUL;
Rmsg_33 : constant String := "explicit raise" & NUL;
Rmsg_34 : constant String := "infinite recursion" & NUL;
Rmsg_35 : constant String := "object too large" & NUL;
Rmsg_36 : constant String := "stream operation not allowed" & NUL;
-----------------------
-- Polling Interface --
-----------------------
type Unsigned is mod 2 ** 32;
Counter : Unsigned := 0;
pragma Warnings (Off, Counter);
-- This counter is provided for convenience. It can be used in Poll to
-- perform periodic but not systematic operations.
procedure Poll is separate;
-- The actual polling routine is separate, so that it can easily be
-- replaced with a target dependent version.
--------------------------
-- Code_Address_For_AAA --
--------------------------
-- This function gives us the start of the PC range for addresses within
-- the exception unit itself. We hope that gigi/gcc keep all the procedures
-- in their original order.
function Code_Address_For_AAA return System.Address is
begin
-- We are using a label instead of Code_Address_For_AAA'Address because
-- on some platforms the latter does not yield the address we want, but
-- the address of a stub or of a descriptor instead. This is the case at
-- least on PA-HPUX.
<>
return Start_Of_AAA'Address;
end Code_Address_For_AAA;
----------------
-- Call_Chain --
----------------
procedure Call_Chain (Excep : EOA) is separate;
-- The actual Call_Chain routine is separate, so that it can easily
-- be dummied out when no exception traceback information is needed.
-------------------
-- EId_To_String --
-------------------
function EId_To_String (X : Exception_Id) return String
renames Stream_Attributes.EId_To_String;
------------------
-- EO_To_String --
------------------
-- We use the null string to represent the null occurrence, otherwise we
-- output the Untailored_Exception_Information string for the occurrence.
function EO_To_String (X : Exception_Occurrence) return String
renames Stream_Attributes.EO_To_String;
------------------------
-- Exception_Identity --
------------------------
function Exception_Identity
(X : Exception_Occurrence) return Exception_Id
is
begin
-- Note that the following test used to be here for the original
-- Ada 95 semantics, but these were modified by AI-241 to require
-- returning Null_Id instead of raising Constraint_Error.
-- if X.Id = Null_Id then
-- raise Constraint_Error;
-- end if;
return X.Id;
end Exception_Identity;
---------------------------
-- Exception_Information --
---------------------------
function Exception_Information (X : Exception_Occurrence) return String is
begin
if X.Id = Null_Id then
raise Constraint_Error;
else
return Exception_Data.Exception_Information (X);
end if;
end Exception_Information;
-----------------------
-- Exception_Message --
-----------------------
function Exception_Message (X : Exception_Occurrence) return String is
begin
if X.Id = Null_Id then
raise Constraint_Error;
else
return X.Msg (1 .. X.Msg_Length);
end if;
end Exception_Message;
--------------------
-- Exception_Name --
--------------------
function Exception_Name (Id : Exception_Id) return String is
begin
if Id = null then
raise Constraint_Error;
else
return To_Ptr (Id.Full_Name) (1 .. Id.Name_Length - 1);
end if;
end Exception_Name;
function Exception_Name (X : Exception_Occurrence) return String is
begin
return Exception_Name (X.Id);
end Exception_Name;
---------------------------
-- Exception_Name_Simple --
---------------------------
function Exception_Name_Simple (X : Exception_Occurrence) return String is
Name : constant String := Exception_Name (X);
P : Natural;
begin
P := Name'Length;
while P > 1 loop
exit when Name (P - 1) = '.';
P := P - 1;
end loop;
-- Return result making sure lower bound is 1
declare
subtype Rname is String (1 .. Name'Length - P + 1);
begin
return Rname (Name (P .. Name'Length));
end;
end Exception_Name_Simple;
--------------------
-- Exception_Data --
--------------------
package body Exception_Data is separate;
-- This package can be easily dummied out if we do not want the basic
-- support for exception messages (such as in Ada 83).
---------------------------
-- Exception_Propagation --
---------------------------
package body Exception_Propagation is separate;
-- Depending on the actual exception mechanism used (front-end or
-- back-end based), the implementation will differ, which is why this
-- package is separated.
----------------------
-- Exception_Traces --
----------------------
package body Exception_Traces is separate;
-- Depending on the underlying support for IO the implementation will
-- differ. Moreover we would like to dummy out this package in case we
-- do not want any exception tracing support. This is why this package
-- is separated.
--------------------------------------
-- Get_Exception_Machine_Occurrence --
--------------------------------------
function Get_Exception_Machine_Occurrence
(X : Exception_Occurrence) return System.Address
is
begin
return X.Machine_Occurrence;
end Get_Exception_Machine_Occurrence;
-----------
-- Image --
-----------
function Image (Index : Integer) return String is
Result : constant String := Integer'Image (Index);
begin
if Result (1) = ' ' then
return Result (2 .. Result'Last);
else
return Result;
end if;
end Image;
-----------------------
-- Stream Attributes --
-----------------------
package body Stream_Attributes is separate;
-- This package can be easily dummied out if we do not want the
-- support for streaming Exception_Ids and Exception_Occurrences.
----------------------------
-- Raise_Constraint_Error --
----------------------------
procedure Raise_Constraint_Error (File : System.Address; Line : Integer) is
begin
Raise_With_Location_And_Msg (Constraint_Error_Def'Access, File, Line);
end Raise_Constraint_Error;
--------------------------------
-- Raise_Constraint_Error_Msg --
--------------------------------
procedure Raise_Constraint_Error_Msg
(File : System.Address;
Line : Integer;
Column : Integer;
Msg : System.Address)
is
begin
Raise_With_Location_And_Msg
(Constraint_Error_Def'Access, File, Line, Column, Msg);
end Raise_Constraint_Error_Msg;
-------------------------
-- Complete_Occurrence --
-------------------------
procedure Complete_Occurrence (X : EOA) is
begin
-- Compute the backtrace for this occurrence if the corresponding
-- binder option has been set. Call_Chain takes care of the reraise
-- case.
-- ??? Using Call_Chain here means we are going to walk up the stack
-- once only for backtracing purposes before doing it again for the
-- propagation per se.
-- The first inspection is much lighter, though, as it only requires
-- partial unwinding of each frame. Additionally, although we could use
-- the personality routine to record the addresses while propagating,
-- this method has two drawbacks:
-- 1) the trace is incomplete if the exception is handled since we
-- don't walk past the frame with the handler,
-- and
-- 2) we would miss the frames for which our personality routine is not
-- called, e.g. if C or C++ calls are on the way.
Call_Chain (X);
-- Notify the debugger
Debug_Raise_Exception
(E => SSL.Exception_Data_Ptr (X.Id),
Message => X.Msg (1 .. X.Msg_Length));
end Complete_Occurrence;
---------------------------------------
-- Complete_And_Propagate_Occurrence --
---------------------------------------
procedure Complete_And_Propagate_Occurrence (X : EOA) is
begin
Complete_Occurrence (X);
Exception_Propagation.Propagate_Exception (X);
end Complete_And_Propagate_Occurrence;
---------------------
-- Raise_Exception --
---------------------
procedure Raise_Exception
(E : Exception_Id;
Message : String := "")
is
EF : Exception_Id := E;
begin
-- Raise CE if E = Null_ID (AI-446)
if E = null then
EF := Constraint_Error'Identity;
end if;
-- Go ahead and raise appropriate exception
Raise_Exception_Always (EF, Message);
end Raise_Exception;
----------------------------
-- Raise_Exception_Always --
----------------------------
procedure Raise_Exception_Always
(E : Exception_Id;
Message : String := "")
is
X : constant EOA := Exception_Propagation.Allocate_Occurrence;
begin
Exception_Data.Set_Exception_Msg (X, E, Message);
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Complete_And_Propagate_Occurrence (X);
end Raise_Exception_Always;
------------------------------
-- Raise_Exception_No_Defer --
------------------------------
procedure Raise_Exception_No_Defer
(E : Exception_Id;
Message : String := "")
is
X : constant EOA := Exception_Propagation.Allocate_Occurrence;
begin
Exception_Data.Set_Exception_Msg (X, E, Message);
-- Do not call Abort_Defer.all, as specified by the spec
Complete_And_Propagate_Occurrence (X);
end Raise_Exception_No_Defer;
-------------------------------------
-- Raise_From_Controlled_Operation --
-------------------------------------
procedure Raise_From_Controlled_Operation
(X : Ada.Exceptions.Exception_Occurrence)
is
Prefix : constant String := "adjust/finalize raised ";
Orig_Msg : constant String := Exception_Message (X);
Orig_Prefix_Length : constant Natural :=
Integer'Min (Prefix'Length, Orig_Msg'Length);
Orig_Prefix : String renames
Orig_Msg (Orig_Msg'First .. Orig_Msg'First + Orig_Prefix_Length - 1);
begin
-- Message already has the proper prefix, just re-raise
if Orig_Prefix = Prefix then
Raise_Exception_No_Defer
(E => Program_Error'Identity,
Message => Orig_Msg);
else
declare
New_Msg : constant String := Prefix & Exception_Name (X);
begin
-- No message present, just provide our own
if Orig_Msg = "" then
Raise_Exception_No_Defer
(E => Program_Error'Identity,
Message => New_Msg);
-- Message present, add informational prefix
else
Raise_Exception_No_Defer
(E => Program_Error'Identity,
Message => New_Msg & ": " & Orig_Msg);
end if;
end;
end if;
end Raise_From_Controlled_Operation;
-------------------------------------------
-- Create_Occurrence_From_Signal_Handler --
-------------------------------------------
function Create_Occurrence_From_Signal_Handler
(E : Exception_Id;
M : System.Address) return EOA
is
X : constant EOA := Exception_Propagation.Allocate_Occurrence;
begin
Exception_Data.Set_Exception_C_Msg (X, E, M);
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Complete_Occurrence (X);
return X;
end Create_Occurrence_From_Signal_Handler;
---------------------------------------------------
-- Create_Machine_Occurrence_From_Signal_Handler --
---------------------------------------------------
function Create_Machine_Occurrence_From_Signal_Handler
(E : Exception_Id;
M : System.Address) return System.Address
is
begin
return Create_Occurrence_From_Signal_Handler (E, M).Machine_Occurrence;
end Create_Machine_Occurrence_From_Signal_Handler;
-------------------------------
-- Raise_From_Signal_Handler --
-------------------------------
procedure Raise_From_Signal_Handler
(E : Exception_Id;
M : System.Address)
is
begin
Exception_Propagation.Propagate_Exception
(Create_Occurrence_From_Signal_Handler (E, M));
end Raise_From_Signal_Handler;
-------------------------
-- Raise_Program_Error --
-------------------------
procedure Raise_Program_Error
(File : System.Address;
Line : Integer)
is
begin
Raise_With_Location_And_Msg (Program_Error_Def'Access, File, Line);
end Raise_Program_Error;
-----------------------------
-- Raise_Program_Error_Msg --
-----------------------------
procedure Raise_Program_Error_Msg
(File : System.Address;
Line : Integer;
Msg : System.Address)
is
begin
Raise_With_Location_And_Msg
(Program_Error_Def'Access, File, Line, M => Msg);
end Raise_Program_Error_Msg;
-------------------------
-- Raise_Storage_Error --
-------------------------
procedure Raise_Storage_Error
(File : System.Address;
Line : Integer)
is
begin
Raise_With_Location_And_Msg (Storage_Error_Def'Access, File, Line);
end Raise_Storage_Error;
-----------------------------
-- Raise_Storage_Error_Msg --
-----------------------------
procedure Raise_Storage_Error_Msg
(File : System.Address;
Line : Integer;
Msg : System.Address)
is
begin
Raise_With_Location_And_Msg
(Storage_Error_Def'Access, File, Line, M => Msg);
end Raise_Storage_Error_Msg;
---------------------------------
-- Raise_With_Location_And_Msg --
---------------------------------
procedure Raise_With_Location_And_Msg
(E : Exception_Id;
F : System.Address;
L : Integer;
C : Integer := 0;
M : System.Address := System.Null_Address)
is
X : constant EOA := Exception_Propagation.Allocate_Occurrence;
begin
Exception_Data.Set_Exception_C_Msg (X, E, F, L, C, M);
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Complete_And_Propagate_Occurrence (X);
end Raise_With_Location_And_Msg;
--------------------
-- Raise_With_Msg --
--------------------
procedure Raise_With_Msg (E : Exception_Id) is
Excep : constant EOA := Exception_Propagation.Allocate_Occurrence;
Ex : constant Exception_Occurrence_Access := Get_Current_Excep.all;
begin
Excep.Exception_Raised := False;
Excep.Id := E;
Excep.Num_Tracebacks := 0;
Excep.Pid := Local_Partition_ID;
-- Copy the message from the current exception
-- Change the interface to be called with an occurrence ???
Excep.Msg_Length := Ex.Msg_Length;
Excep.Msg (1 .. Excep.Msg_Length) := Ex.Msg (1 .. Ex.Msg_Length);
-- The following is a common pattern, should be abstracted
-- into a procedure call ???
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Complete_And_Propagate_Occurrence (Excep);
end Raise_With_Msg;
-----------------------------------------
-- Calls to Run-Time Check Subprograms --
-----------------------------------------
procedure Rcheck_CE_Access_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_00'Address);
end Rcheck_CE_Access_Check;
procedure Rcheck_CE_Null_Access_Parameter
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_01'Address);
end Rcheck_CE_Null_Access_Parameter;
procedure Rcheck_CE_Discriminant_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_02'Address);
end Rcheck_CE_Discriminant_Check;
procedure Rcheck_CE_Divide_By_Zero
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_03'Address);
end Rcheck_CE_Divide_By_Zero;
procedure Rcheck_CE_Explicit_Raise
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_04'Address);
end Rcheck_CE_Explicit_Raise;
procedure Rcheck_CE_Index_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_05'Address);
end Rcheck_CE_Index_Check;
procedure Rcheck_CE_Invalid_Data
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_06'Address);
end Rcheck_CE_Invalid_Data;
procedure Rcheck_CE_Length_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_07'Address);
end Rcheck_CE_Length_Check;
procedure Rcheck_CE_Null_Exception_Id
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_08'Address);
end Rcheck_CE_Null_Exception_Id;
procedure Rcheck_CE_Null_Not_Allowed
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_09'Address);
end Rcheck_CE_Null_Not_Allowed;
procedure Rcheck_CE_Overflow_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_10'Address);
end Rcheck_CE_Overflow_Check;
procedure Rcheck_CE_Partition_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_11'Address);
end Rcheck_CE_Partition_Check;
procedure Rcheck_CE_Range_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_12'Address);
end Rcheck_CE_Range_Check;
procedure Rcheck_CE_Tag_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, 0, Rmsg_13'Address);
end Rcheck_CE_Tag_Check;
procedure Rcheck_PE_Access_Before_Elaboration
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_14'Address);
end Rcheck_PE_Access_Before_Elaboration;
procedure Rcheck_PE_Accessibility_Check
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_15'Address);
end Rcheck_PE_Accessibility_Check;
procedure Rcheck_PE_Address_Of_Intrinsic
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_16'Address);
end Rcheck_PE_Address_Of_Intrinsic;
procedure Rcheck_PE_Aliased_Parameters
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_17'Address);
end Rcheck_PE_Aliased_Parameters;
procedure Rcheck_PE_All_Guards_Closed
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_18'Address);
end Rcheck_PE_All_Guards_Closed;
procedure Rcheck_PE_Bad_Predicated_Generic_Type
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_19'Address);
end Rcheck_PE_Bad_Predicated_Generic_Type;
procedure Rcheck_PE_Current_Task_In_Entry_Body
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_20'Address);
end Rcheck_PE_Current_Task_In_Entry_Body;
procedure Rcheck_PE_Duplicated_Entry_Address
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_21'Address);
end Rcheck_PE_Duplicated_Entry_Address;
procedure Rcheck_PE_Explicit_Raise
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_22'Address);
end Rcheck_PE_Explicit_Raise;
procedure Rcheck_PE_Implicit_Return
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_24'Address);
end Rcheck_PE_Implicit_Return;
procedure Rcheck_PE_Misaligned_Address_Value
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_25'Address);
end Rcheck_PE_Misaligned_Address_Value;
procedure Rcheck_PE_Missing_Return
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_26'Address);
end Rcheck_PE_Missing_Return;
procedure Rcheck_PE_Non_Transportable_Actual
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_31'Address);
end Rcheck_PE_Non_Transportable_Actual;
procedure Rcheck_PE_Overlaid_Controlled_Object
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_27'Address);
end Rcheck_PE_Overlaid_Controlled_Object;
procedure Rcheck_PE_Potentially_Blocking_Operation
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_28'Address);
end Rcheck_PE_Potentially_Blocking_Operation;
procedure Rcheck_PE_Stream_Operation_Not_Allowed
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_36'Address);
end Rcheck_PE_Stream_Operation_Not_Allowed;
procedure Rcheck_PE_Stubbed_Subprogram_Called
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_29'Address);
end Rcheck_PE_Stubbed_Subprogram_Called;
procedure Rcheck_PE_Unchecked_Union_Restriction
(File : System.Address; Line : Integer)
is
begin
Raise_Program_Error_Msg (File, Line, Rmsg_30'Address);
end Rcheck_PE_Unchecked_Union_Restriction;
procedure Rcheck_SE_Empty_Storage_Pool
(File : System.Address; Line : Integer)
is
begin
Raise_Storage_Error_Msg (File, Line, Rmsg_32'Address);
end Rcheck_SE_Empty_Storage_Pool;
procedure Rcheck_SE_Explicit_Raise
(File : System.Address; Line : Integer)
is
begin
Raise_Storage_Error_Msg (File, Line, Rmsg_33'Address);
end Rcheck_SE_Explicit_Raise;
procedure Rcheck_SE_Infinite_Recursion
(File : System.Address; Line : Integer)
is
begin
Raise_Storage_Error_Msg (File, Line, Rmsg_34'Address);
end Rcheck_SE_Infinite_Recursion;
procedure Rcheck_SE_Object_Too_Large
(File : System.Address; Line : Integer)
is
begin
Raise_Storage_Error_Msg (File, Line, Rmsg_35'Address);
end Rcheck_SE_Object_Too_Large;
procedure Rcheck_CE_Access_Check_Ext
(File : System.Address; Line, Column : Integer)
is
begin
Raise_Constraint_Error_Msg (File, Line, Column, Rmsg_00'Address);
end Rcheck_CE_Access_Check_Ext;
procedure Rcheck_CE_Index_Check_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer)
is
Msg : constant String :=
Rmsg_05 (Rmsg_05'First .. Rmsg_05'Last - 1) & ASCII.LF
& "index " & Image (Index) & " not in " & Image (First)
& ".." & Image (Last) & ASCII.NUL;
begin
Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
end Rcheck_CE_Index_Check_Ext;
procedure Rcheck_CE_Invalid_Data_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer)
is
Msg : constant String :=
Rmsg_06 (Rmsg_06'First .. Rmsg_06'Last - 1) & ASCII.LF
& "value " & Image (Index) & " not in " & Image (First)
& ".." & Image (Last) & ASCII.NUL;
begin
Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
end Rcheck_CE_Invalid_Data_Ext;
procedure Rcheck_CE_Range_Check_Ext
(File : System.Address; Line, Column, Index, First, Last : Integer)
is
Msg : constant String :=
Rmsg_12 (Rmsg_12'First .. Rmsg_12'Last - 1) & ASCII.LF
& "value " & Image (Index) & " not in " & Image (First)
& ".." & Image (Last) & ASCII.NUL;
begin
Raise_Constraint_Error_Msg (File, Line, Column, Msg'Address);
end Rcheck_CE_Range_Check_Ext;
procedure Rcheck_PE_Finalize_Raised_Exception
(File : System.Address; Line : Integer)
is
X : constant EOA := Exception_Propagation.Allocate_Occurrence;
begin
-- This is "finalize/adjust raised exception". This subprogram is always
-- called with abort deferred, unlike all other Rcheck_* subprograms, it
-- needs to call Raise_Exception_No_Defer.
-- This is consistent with Raise_From_Controlled_Operation
Exception_Data.Set_Exception_C_Msg
(X, Program_Error_Def'Access, File, Line, 0, Rmsg_23'Address);
Complete_And_Propagate_Occurrence (X);
end Rcheck_PE_Finalize_Raised_Exception;
-------------
-- Reraise --
-------------
procedure Reraise is
Excep : constant EOA := Exception_Propagation.Allocate_Occurrence;
Saved_MO : constant System.Address := Excep.Machine_Occurrence;
begin
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Save_Occurrence (Excep.all, Get_Current_Excep.all.all);
Excep.Machine_Occurrence := Saved_MO;
Complete_And_Propagate_Occurrence (Excep);
end Reraise;
--------------------------------------
-- Reraise_Library_Exception_If_Any --
--------------------------------------
procedure Reraise_Library_Exception_If_Any is
LE : Exception_Occurrence;
begin
if Library_Exception_Set then
LE := Library_Exception;
if LE.Id = Null_Id then
Raise_Exception_No_Defer
(E => Program_Error'Identity,
Message => "finalize/adjust raised exception");
else
Raise_From_Controlled_Operation (LE);
end if;
end if;
end Reraise_Library_Exception_If_Any;
------------------------
-- Reraise_Occurrence --
------------------------
procedure Reraise_Occurrence (X : Exception_Occurrence) is
begin
if X.Id = null then
return;
else
Reraise_Occurrence_Always (X);
end if;
end Reraise_Occurrence;
-------------------------------
-- Reraise_Occurrence_Always --
-------------------------------
procedure Reraise_Occurrence_Always (X : Exception_Occurrence) is
begin
if not ZCX_By_Default then
Abort_Defer.all;
end if;
Reraise_Occurrence_No_Defer (X);
end Reraise_Occurrence_Always;
---------------------------------
-- Reraise_Occurrence_No_Defer --
---------------------------------
procedure Reraise_Occurrence_No_Defer (X : Exception_Occurrence) is
Excep : constant EOA := Exception_Propagation.Allocate_Occurrence;
Saved_MO : constant System.Address := Excep.Machine_Occurrence;
begin
Save_Occurrence (Excep.all, X);
Excep.Machine_Occurrence := Saved_MO;
Complete_And_Propagate_Occurrence (Excep);
end Reraise_Occurrence_No_Defer;
---------------------
-- Save_Occurrence --
---------------------
procedure Save_Occurrence
(Target : out Exception_Occurrence;
Source : Exception_Occurrence)
is
begin
-- As the machine occurrence might be a data that must be finalized
-- (outside any Ada mechanism), do not copy it
Target.Id := Source.Id;
Target.Machine_Occurrence := System.Null_Address;
Target.Msg_Length := Source.Msg_Length;
Target.Num_Tracebacks := Source.Num_Tracebacks;
Target.Pid := Source.Pid;
Target.Msg (1 .. Target.Msg_Length) :=
Source.Msg (1 .. Target.Msg_Length);
Target.Tracebacks (1 .. Target.Num_Tracebacks) :=
Source.Tracebacks (1 .. Target.Num_Tracebacks);
end Save_Occurrence;
function Save_Occurrence (Source : Exception_Occurrence) return EOA is
Target : constant EOA := new Exception_Occurrence;
begin
Save_Occurrence (Target.all, Source);
return Target;
end Save_Occurrence;
-------------------
-- String_To_EId --
-------------------
function String_To_EId (S : String) return Exception_Id
renames Stream_Attributes.String_To_EId;
------------------
-- String_To_EO --
------------------
function String_To_EO (S : String) return Exception_Occurrence
renames Stream_Attributes.String_To_EO;
---------------
-- To_Stderr --
---------------
procedure To_Stderr (C : Character) is
procedure Put_Char_Stderr (C : Character);
pragma Import (C, Put_Char_Stderr, "put_char_stderr");
begin
Put_Char_Stderr (C);
end To_Stderr;
procedure To_Stderr (S : String) is
begin
for J in S'Range loop
if S (J) /= ASCII.CR then
To_Stderr (S (J));
end if;
end loop;
end To_Stderr;
-------------------------
-- Transfer_Occurrence --
-------------------------
procedure Transfer_Occurrence
(Target : Exception_Occurrence_Access;
Source : Exception_Occurrence)
is
begin
Save_Occurrence (Target.all, Source);
end Transfer_Occurrence;
------------------------
-- Triggered_By_Abort --
------------------------
function Triggered_By_Abort return Boolean is
Ex : constant Exception_Occurrence_Access := Get_Current_Excep.all;
begin
return Ex /= null
and then Exception_Identity (Ex.all) = Standard'Abort_Signal'Identity;
end Triggered_By_Abort;
-------------------------
-- Wide_Exception_Name --
-------------------------
WC_Encoding : Character;
pragma Import (C, WC_Encoding, "__gl_wc_encoding");
-- Encoding method for source, as exported by binder
function Wide_Exception_Name
(Id : Exception_Id) return Wide_String
is
S : constant String := Exception_Name (Id);
W : Wide_String (1 .. S'Length);
L : Natural;
begin
String_To_Wide_String
(S, W, L, Get_WC_Encoding_Method (WC_Encoding));
return W (1 .. L);
end Wide_Exception_Name;
function Wide_Exception_Name
(X : Exception_Occurrence) return Wide_String
is
S : constant String := Exception_Name (X);
W : Wide_String (1 .. S'Length);
L : Natural;
begin
String_To_Wide_String
(S, W, L, Get_WC_Encoding_Method (WC_Encoding));
return W (1 .. L);
end Wide_Exception_Name;
----------------------------
-- Wide_Wide_Exception_Name --
-----------------------------
function Wide_Wide_Exception_Name
(Id : Exception_Id) return Wide_Wide_String
is
S : constant String := Exception_Name (Id);
W : Wide_Wide_String (1 .. S'Length);
L : Natural;
begin
String_To_Wide_Wide_String
(S, W, L, Get_WC_Encoding_Method (WC_Encoding));
return W (1 .. L);
end Wide_Wide_Exception_Name;
function Wide_Wide_Exception_Name
(X : Exception_Occurrence) return Wide_Wide_String
is
S : constant String := Exception_Name (X);
W : Wide_Wide_String (1 .. S'Length);
L : Natural;
begin
String_To_Wide_Wide_String
(S, W, L, Get_WC_Encoding_Method (WC_Encoding));
return W (1 .. L);
end Wide_Wide_Exception_Name;
--------------------------
-- Code_Address_For_ZZZ --
--------------------------
-- This function gives us the end of the PC range for addresses
-- within the exception unit itself. We hope that gigi/gcc keeps all the
-- procedures in their original order.
function Code_Address_For_ZZZ return System.Address is
begin
<>
return Start_Of_ZZZ'Address;
end Code_Address_For_ZZZ;
end Ada.Exceptions;