1749 lines
63 KiB
Ada
1749 lines
63 KiB
Ada
------------------------------------------------------------------------------
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-- --
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-- GNAT COMPILER COMPONENTS --
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-- --
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-- A D A . E X C E P T I O N S --
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-- --
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-- B o d y --
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-- --
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-- Copyright (C) 1992-2015, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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pragma Style_Checks (All_Checks);
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-- No subprogram ordering check, due to logical grouping
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pragma Polling (Off);
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-- We must turn polling off for this unit, because otherwise we get
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-- elaboration circularities with System.Exception_Tables.
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with System; use System;
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with System.Exceptions; use System.Exceptions;
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with System.Exceptions_Debug; use System.Exceptions_Debug;
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with System.Standard_Library; use System.Standard_Library;
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with System.Soft_Links; use System.Soft_Links;
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with System.WCh_Con; use System.WCh_Con;
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with System.WCh_StW; use System.WCh_StW;
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pragma Warnings (Off);
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-- Suppress complaints about Symbolic not being referenced, and about it not
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-- having pragma Preelaborate.
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with System.Traceback.Symbolic;
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-- Bring Symbolic into the closure. If it is the s-trasym-dwarf.adb version,
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-- it will install symbolic tracebacks as the default decorator. Otherwise,
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-- symbolic tracebacks are not supported, and we fall back to hexadecimal
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-- addresses.
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pragma Warnings (On);
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package body Ada.Exceptions is
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pragma Suppress (All_Checks);
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-- We definitely do not want exceptions occurring within this unit, or
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-- we are in big trouble. If an exceptional situation does occur, better
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-- that it not be raised, since raising it can cause confusing chaos.
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-----------------------
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-- Local Subprograms --
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-----------------------
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-- Note: the exported subprograms in this package body are called directly
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-- from C clients using the given external name, even though they are not
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-- technically visible in the Ada sense.
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function Code_Address_For_AAA return System.Address;
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function Code_Address_For_ZZZ return System.Address;
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-- Return start and end of procedures in this package
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--
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-- These procedures are used to provide exclusion bounds in
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-- calls to Call_Chain at exception raise points from this unit. The
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-- purpose is to arrange for the exception tracebacks not to include
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-- frames from subprograms involved in the raise process, as these are
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-- meaningless from the user's standpoint.
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--
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-- For these bounds to be meaningful, we need to ensure that the object
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-- code for the subprograms involved in processing a raise is located
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-- after the object code Code_Address_For_AAA and before the object
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-- code Code_Address_For_ZZZ. This will indeed be the case as long as
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-- the following rules are respected:
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--
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-- 1) The bodies of the subprograms involved in processing a raise
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-- are located after the body of Code_Address_For_AAA and before the
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-- body of Code_Address_For_ZZZ.
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--
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-- 2) No pragma Inline applies to any of these subprograms, as this
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-- could delay the corresponding assembly output until the end of
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-- the unit.
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procedure Call_Chain (Excep : EOA);
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-- Store up to Max_Tracebacks in Excep, corresponding to the current
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-- call chain.
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function Image (Index : Integer) return String;
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-- Return string image corresponding to Index
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procedure To_Stderr (S : String);
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pragma Export (Ada, To_Stderr, "__gnat_to_stderr");
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-- Little routine to output string to stderr that is also used
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-- in the tasking run time.
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procedure To_Stderr (C : Character);
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pragma Inline (To_Stderr);
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pragma Export (Ada, To_Stderr, "__gnat_to_stderr_char");
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-- Little routine to output a character to stderr, used by some of
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-- the separate units below.
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package Exception_Data is
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-----------------------------------
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-- Exception Message Subprograms --
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-----------------------------------
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procedure Set_Exception_C_Msg
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(Excep : EOA;
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Id : Exception_Id;
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Msg1 : System.Address;
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Line : Integer := 0;
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Column : Integer := 0;
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Msg2 : System.Address := System.Null_Address);
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-- This routine is called to setup the exception referenced by X
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-- to contain the indicated Id value and message. Msg1 is a null
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-- terminated string which is generated as the exception message. If
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-- line is non-zero, then a colon and the decimal representation of
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-- this integer is appended to the message. Ditto for Column. When Msg2
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-- is non-null, a space and this additional null terminated string is
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-- added to the message.
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procedure Set_Exception_Msg
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(Excep : EOA;
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Id : Exception_Id;
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Message : String);
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-- This routine is called to setup the exception referenced by X
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-- to contain the indicated Id value and message. Message is a string
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-- which is generated as the exception message.
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---------------------------------------
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-- Exception Information Subprograms --
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---------------------------------------
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function Untailored_Exception_Information
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(X : Exception_Occurrence) return String;
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-- This is used by Stream_Attributes.EO_To_String to convert an
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-- Exception_Occurrence to a String for the stream attributes.
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-- String_To_EO understands the format, as documented here.
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--
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-- The format of the string is as follows:
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--
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-- raised <exception name> : <message>
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-- (" : <message>" is present only if Exception_Message is not empty)
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-- PID=nnnn (only if nonzero)
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-- Call stack traceback locations: (only if at least one location)
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-- <0xyyyyyyyy 0xyyyyyyyy ...> (is recorded)
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--
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-- The lines are separated by a ASCII.LF character.
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-- The nnnn is the partition Id given as decimal digits.
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-- The 0x... line represents traceback program counter locations, in
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-- execution order with the first one being the exception location.
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--
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-- The Exception_Name and Message lines are omitted in the abort
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-- signal case, since this is not really an exception.
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--
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-- Note: If the format of the generated string is changed, please note
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-- that an equivalent modification to the routine String_To_EO must be
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-- made to preserve proper functioning of the stream attributes.
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function Exception_Information (X : Exception_Occurrence) return String;
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-- This is the implementation of Ada.Exceptions.Exception_Information,
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-- as defined in the Ada RM.
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--
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-- If no traceback decorator (see GNAT.Exception_Traces) is currently
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-- in place, this is the same as Untailored_Exception_Information.
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-- Otherwise, the decorator is used to produce a symbolic traceback
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-- instead of hexadecimal addresses.
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--
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-- Note that unlike Untailored_Exception_Information, there is no need
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-- to keep the output of Exception_Information stable for streaming
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-- purposes, and in fact the output differs across platforms.
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end Exception_Data;
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package Exception_Traces is
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-------------------------------------------------
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-- Run-Time Exception Notification Subprograms --
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-------------------------------------------------
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-- These subprograms provide a common run-time interface to trigger the
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-- actions required when an exception is about to be propagated (e.g.
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-- user specified actions or output of exception information). They are
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-- exported to be usable by the Ada exception handling personality
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-- routine when the GCC 3 mechanism is used.
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procedure Notify_Handled_Exception (Excep : EOA);
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pragma Export
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(C, Notify_Handled_Exception, "__gnat_notify_handled_exception");
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-- This routine is called for a handled occurrence is about to be
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-- propagated.
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procedure Notify_Unhandled_Exception (Excep : EOA);
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pragma Export
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(C, Notify_Unhandled_Exception, "__gnat_notify_unhandled_exception");
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-- This routine is called when an unhandled occurrence is about to be
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-- propagated.
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procedure Unhandled_Exception_Terminate (Excep : EOA);
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pragma No_Return (Unhandled_Exception_Terminate);
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-- This procedure is called to terminate execution following an
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-- unhandled exception. The exception information, including
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-- traceback if available is output, and execution is then
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-- terminated. Note that at the point where this routine is
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-- called, the stack has typically been destroyed.
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end Exception_Traces;
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package Exception_Propagation is
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---------------------------------------
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-- Exception Propagation Subprograms --
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---------------------------------------
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function Allocate_Occurrence return EOA;
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-- Allocate an exception occurrence (as well as the machine occurrence)
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procedure Propagate_Exception (Excep : EOA);
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pragma No_Return (Propagate_Exception);
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-- This procedure propagates the exception represented by Excep
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end Exception_Propagation;
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package Stream_Attributes is
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----------------------------------
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-- Stream Attribute Subprograms --
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----------------------------------
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function EId_To_String (X : Exception_Id) return String;
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function String_To_EId (S : String) return Exception_Id;
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-- Functions for implementing Exception_Id stream attributes
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function EO_To_String (X : Exception_Occurrence) return String;
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function String_To_EO (S : String) return Exception_Occurrence;
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-- Functions for implementing Exception_Occurrence stream
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-- attributes
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end Stream_Attributes;
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procedure Complete_Occurrence (X : EOA);
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-- Finish building the occurrence: save the call chain and notify the
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-- debugger.
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procedure Complete_And_Propagate_Occurrence (X : EOA);
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pragma No_Return (Complete_And_Propagate_Occurrence);
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-- This is a simple wrapper to Complete_Occurrence and
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-- Exception_Propagation.Propagate_Exception.
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function Create_Occurrence_From_Signal_Handler
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(E : Exception_Id;
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M : System.Address) return EOA;
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-- Create and build an exception occurrence using exception id E and
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-- nul-terminated message M.
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function Create_Machine_Occurrence_From_Signal_Handler
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(E : Exception_Id;
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M : System.Address) return System.Address;
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pragma Export (C, Create_Machine_Occurrence_From_Signal_Handler,
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"__gnat_create_machine_occurrence_from_signal_handler");
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-- Create and build an exception occurrence using exception id E and
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-- nul-terminated message M. Return the machine occurrence.
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procedure Raise_Exception_No_Defer
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(E : Exception_Id;
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Message : String := "");
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pragma Export
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(Ada, Raise_Exception_No_Defer,
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"ada__exceptions__raise_exception_no_defer");
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pragma No_Return (Raise_Exception_No_Defer);
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-- Similar to Raise_Exception, but with no abort deferral
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procedure Raise_With_Msg (E : Exception_Id);
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pragma No_Return (Raise_With_Msg);
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pragma Export (C, Raise_With_Msg, "__gnat_raise_with_msg");
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-- Raises an exception with given exception id value. A message
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-- is associated with the raise, and has already been stored in the
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-- exception occurrence referenced by the Current_Excep in the TSD.
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-- Abort is deferred before the raise call.
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procedure Raise_With_Location_And_Msg
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(E : Exception_Id;
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F : System.Address;
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L : Integer;
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C : Integer := 0;
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M : System.Address := System.Null_Address);
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pragma No_Return (Raise_With_Location_And_Msg);
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-- Raise an exception with given exception id value. A filename and line
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-- number is associated with the raise and is stored in the exception
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-- occurrence and in addition a column and a string message M may be
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-- appended to this (if not null/0).
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procedure Raise_Constraint_Error (File : System.Address; Line : Integer);
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pragma No_Return (Raise_Constraint_Error);
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pragma Export (C, Raise_Constraint_Error, "__gnat_raise_constraint_error");
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-- Raise constraint error with file:line information
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procedure Raise_Constraint_Error_Msg
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(File : System.Address;
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Line : Integer;
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Column : Integer;
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Msg : System.Address);
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pragma No_Return (Raise_Constraint_Error_Msg);
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pragma Export
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(C, Raise_Constraint_Error_Msg, "__gnat_raise_constraint_error_msg");
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-- Raise constraint error with file:line:col + msg information
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procedure Raise_Program_Error (File : System.Address; Line : Integer);
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pragma No_Return (Raise_Program_Error);
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pragma Export (C, Raise_Program_Error, "__gnat_raise_program_error");
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-- Raise program error with file:line information
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procedure Raise_Program_Error_Msg
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(File : System.Address;
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Line : Integer;
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Msg : System.Address);
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pragma No_Return (Raise_Program_Error_Msg);
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pragma Export
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(C, Raise_Program_Error_Msg, "__gnat_raise_program_error_msg");
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-- Raise program error with file:line + msg information
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procedure Raise_Storage_Error (File : System.Address; Line : Integer);
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pragma No_Return (Raise_Storage_Error);
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pragma Export (C, Raise_Storage_Error, "__gnat_raise_storage_error");
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-- Raise storage error with file:line information
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procedure Raise_Storage_Error_Msg
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(File : System.Address;
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Line : Integer;
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Msg : System.Address);
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pragma No_Return (Raise_Storage_Error_Msg);
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pragma Export
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(C, Raise_Storage_Error_Msg, "__gnat_raise_storage_error_msg");
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-- Raise storage error with file:line + reason msg information
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-- The exception raising process and the automatic tracing mechanism rely
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-- on some careful use of flags attached to the exception occurrence. The
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-- graph below illustrates the relations between the Raise_ subprograms
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-- and identifies the points where basic flags such as Exception_Raised
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-- are initialized.
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-- (i) signs indicate the flags initialization points. R stands for Raise,
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-- W for With, and E for Exception.
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-- R_No_Msg R_E R_Pe R_Ce R_Se
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-- | | | | |
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-- +--+ +--+ +---+ | +---+
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-- | | | | |
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-- R_E_No_Defer(i) R_W_Msg(i) R_W_Loc
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-- | | | |
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-- +------------+ | +-----------+ +--+
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-- | | | |
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-- | | | Set_E_C_Msg(i)
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-- | | |
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-- Complete_And_Propagate_Occurrence
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procedure Reraise;
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pragma No_Return (Reraise);
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pragma Export (C, Reraise, "__gnat_reraise");
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-- Reraises the exception referenced by the Current_Excep field
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-- of the TSD (all fields of this exception occurrence are set).
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-- Abort is deferred before the reraise operation. Called from
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-- System.Tasking.RendezVous.Exceptional_Complete_RendezVous
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procedure Transfer_Occurrence
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(Target : Exception_Occurrence_Access;
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Source : Exception_Occurrence);
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pragma Export (C, Transfer_Occurrence, "__gnat_transfer_occurrence");
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-- Called from s-tasren.adb:Local_Complete_RendezVous and
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-- s-tpobop.adb:Exceptional_Complete_Entry_Body to setup Target from
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-- Source as an exception to be propagated in the caller task. Target is
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-- expected to be a pointer to the fixed TSD occurrence for this task.
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--------------------------------
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-- Run-Time Check Subprograms --
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--------------------------------
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-- These subprograms raise a specific exception with a reason message
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-- attached. The parameters are the file name and line number in each
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-- case. The names are defined by Exp_Ch11.Get_RT_Exception_Name.
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procedure Rcheck_CE_Access_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Null_Access_Parameter
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Discriminant_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Divide_By_Zero
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Explicit_Raise
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Index_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Invalid_Data
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Length_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Null_Exception_Id
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Null_Not_Allowed
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Overflow_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Partition_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Range_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Tag_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Access_Before_Elaboration
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Accessibility_Check
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Address_Of_Intrinsic
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Aliased_Parameters
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_All_Guards_Closed
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Bad_Predicated_Generic_Type
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Current_Task_In_Entry_Body
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Duplicated_Entry_Address
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Explicit_Raise
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Implicit_Return
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Misaligned_Address_Value
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Missing_Return
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Non_Transportable_Actual
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Overlaid_Controlled_Object
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Potentially_Blocking_Operation
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Stubbed_Subprogram_Called
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Unchecked_Union_Restriction
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(File : System.Address; Line : Integer);
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procedure Rcheck_SE_Empty_Storage_Pool
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(File : System.Address; Line : Integer);
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procedure Rcheck_SE_Explicit_Raise
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(File : System.Address; Line : Integer);
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procedure Rcheck_SE_Infinite_Recursion
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(File : System.Address; Line : Integer);
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procedure Rcheck_SE_Object_Too_Large
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(File : System.Address; Line : Integer);
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procedure Rcheck_PE_Stream_Operation_Not_Allowed
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(File : System.Address; Line : Integer);
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procedure Rcheck_CE_Access_Check_Ext
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(File : System.Address; Line, Column : Integer);
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procedure Rcheck_CE_Index_Check_Ext
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(File : System.Address; Line, Column, Index, First, Last : Integer);
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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.
|
|
|
|
<<Start_Of_AAA>>
|
|
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
|
|
<<Start_Of_ZZZ>>
|
|
return Start_Of_ZZZ'Address;
|
|
end Code_Address_For_ZZZ;
|
|
|
|
end Ada.Exceptions;
|