| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . T R A C E B A C K _ E N T R I E S -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 2003-2014, Free Software Foundation, Inc. -- |
| -- -- |
| -- This specification is derived from the Ada Reference Manual for use with -- |
| -- GNAT. The copyright notice above, and the license provisions that follow -- |
| -- apply solely to the contents of the part following the private keyword. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package offers an abstraction of what is stored in traceback arrays |
| -- for call-chain computation purposes. By default, as defined in this |
| -- version of the package, an entry is a mere code location representing the |
| -- address of a call instruction part of the call-chain. |
| |
| pragma Polling (Off); |
| -- We must turn polling off for this unit, because otherwise we get |
| -- elaboration circularities with Ada.Exceptions. |
| |
| pragma Compiler_Unit_Warning; |
| |
| package System.Traceback_Entries is |
| pragma Preelaborate; |
| |
| subtype Traceback_Entry is System.Address; |
| -- This subtype defines what each traceback array entry contains |
| |
| Null_TB_Entry : constant Traceback_Entry := System.Null_Address; |
| -- This is the value to be used when initializing an entry |
| |
| type Tracebacks_Array is array (Positive range <>) of Traceback_Entry; |
| |
| function PC_For (TB_Entry : Traceback_Entry) return System.Address; |
| pragma Inline (PC_For); |
| -- Returns the address of the call instruction associated with the |
| -- provided entry. |
| |
| function TB_Entry_For (PC : System.Address) return Traceback_Entry; |
| pragma Inline (TB_Entry_For); |
| -- Returns an entry representing a frame for a call instruction at PC |
| |
| end System.Traceback_Entries; |
