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Diffstat (limited to 'gcc/ada/s-traent.ads')
| -rw-r--r-- | gcc/ada/s-traent.ads | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/gcc/ada/s-traent.ads b/gcc/ada/s-traent.ads new file mode 100644 index 00000000000..d0c0865561a --- /dev/null +++ b/gcc/ada/s-traent.ads @@ -0,0 +1,62 @@ +------------------------------------------------------------------------------ +-- -- +-- 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 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 2, 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. See the GNU General Public License -- +-- for more details. You should have received a copy of the GNU General -- +-- Public License distributed with GNAT; see file COPYING. If not, write -- +-- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, -- +-- MA 02111-1307, USA. -- +-- -- +-- As a special exception, if other files instantiate generics from this -- +-- unit, or you link this unit with other files to produce an executable, -- +-- this unit does not by itself cause the resulting executable to be -- +-- covered by the GNU General Public License. This exception does not -- +-- however invalidate any other reasons why the executable file might be -- +-- covered by the GNU Public License. -- +-- -- +-- 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. + +package System.Traceback_Entries is + + 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. + + 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; + + |