1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . T R A C E B A C K _ E N T R I E S --
9 -- Copyright (C) 2003-2007, Free Software Foundation, Inc. --
11 -- This specification is derived from the Ada Reference Manual for use with --
12 -- GNAT. The copyright notice above, and the license provisions that follow --
13 -- apply solely to the contents of the part following the private keyword. --
15 -- GNAT is free software; you can redistribute it and/or modify it under --
16 -- terms of the GNU General Public License as published by the Free Soft- --
17 -- ware Foundation; either version 2, or (at your option) any later ver- --
18 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
19 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
20 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
21 -- for more details. You should have received a copy of the GNU General --
22 -- Public License distributed with GNAT; see file COPYING. If not, write --
23 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
24 -- Boston, MA 02110-1301, USA. --
26 -- As a special exception, if other files instantiate generics from this --
27 -- unit, or you link this unit with other files to produce an executable, --
28 -- this unit does not by itself cause the resulting executable to be --
29 -- covered by the GNU General Public License. This exception does not --
30 -- however invalidate any other reasons why the executable file might be --
31 -- covered by the GNU Public License. --
33 -- GNAT was originally developed by the GNAT team at New York University. --
34 -- Extensive contributions were provided by Ada Core Technologies Inc. --
36 ------------------------------------------------------------------------------
38 -- This package offers an abstraction of what is stored in traceback arrays
39 -- for call-chain computation purposes. By default, as defined in this
40 -- version of the package, an entry is a mere code location representing the
41 -- address of a call instruction part of the call-chain.
43 pragma Warnings (Off);
47 package System.Traceback_Entries is
50 subtype Traceback_Entry is System.Address;
51 -- This subtype defines what each traceback array entry contains
53 Null_TB_Entry : constant Traceback_Entry := System.Null_Address;
54 -- This is the value to be used when initializing an entry
56 function PC_For (TB_Entry : Traceback_Entry) return System.Address;
57 pragma Inline (PC_For);
58 -- Returns the address of the call instruction associated with the
61 function TB_Entry_For (PC : System.Address) return Traceback_Entry;
62 pragma Inline (TB_Entry_For);
63 -- Returns an entry representing a frame for a call instruction at PC
65 end System.Traceback_Entries;