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| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
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| children | 84e7813d76e9 |
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------------------------------------------------------------------------------ -- -- -- 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 -- -- <http://www.gnu.org/licenses/>. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ 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 <exception name> : <message> -- (" : <message>" 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. <<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;