From af0c51ac87ab2a87caa03fa108f0d164987a2764 Mon Sep 17 00:00:00 2001 From: Ben Cheng Date: Thu, 28 Mar 2013 11:14:20 -0700 Subject: [GCC 4.8] Initial check-in of GCC 4.8.0 Change-Id: I0719d8a6d0f69b367a6ab6f10eb75622dbf12771 --- gcc-4.8/gcc/ada/s-pack35.adb | 112 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 112 insertions(+) create mode 100644 gcc-4.8/gcc/ada/s-pack35.adb (limited to 'gcc-4.8/gcc/ada/s-pack35.adb') diff --git a/gcc-4.8/gcc/ada/s-pack35.adb b/gcc-4.8/gcc/ada/s-pack35.adb new file mode 100644 index 000000000..009e66707 --- /dev/null +++ b/gcc-4.8/gcc/ada/s-pack35.adb @@ -0,0 +1,112 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- S Y S T E M . P A C K _ 3 5 -- +-- -- +-- B o d y -- +-- -- +-- Copyright (C) 1992-2009, 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 -- +-- . -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +with System.Storage_Elements; +with System.Unsigned_Types; +with Ada.Unchecked_Conversion; + +package body System.Pack_35 is + + subtype Ofs is System.Storage_Elements.Storage_Offset; + subtype Uns is System.Unsigned_Types.Unsigned; + subtype N07 is System.Unsigned_Types.Unsigned range 0 .. 7; + + use type System.Storage_Elements.Storage_Offset; + use type System.Unsigned_Types.Unsigned; + + type Cluster is record + E0, E1, E2, E3, E4, E5, E6, E7 : Bits_35; + end record; + + for Cluster use record + E0 at 0 range 0 * Bits .. 0 * Bits + Bits - 1; + E1 at 0 range 1 * Bits .. 1 * Bits + Bits - 1; + E2 at 0 range 2 * Bits .. 2 * Bits + Bits - 1; + E3 at 0 range 3 * Bits .. 3 * Bits + Bits - 1; + E4 at 0 range 4 * Bits .. 4 * Bits + Bits - 1; + E5 at 0 range 5 * Bits .. 5 * Bits + Bits - 1; + E6 at 0 range 6 * Bits .. 6 * Bits + Bits - 1; + E7 at 0 range 7 * Bits .. 7 * Bits + Bits - 1; + end record; + + for Cluster'Size use Bits * 8; + + for Cluster'Alignment use Integer'Min (Standard'Maximum_Alignment, + 1 + + 1 * Boolean'Pos (Bits mod 2 = 0) + + 2 * Boolean'Pos (Bits mod 4 = 0)); + -- Use maximum possible alignment, given the bit field size, since this + -- will result in the most efficient code possible for the field. + + type Cluster_Ref is access Cluster; + + function To_Ref is new + Ada.Unchecked_Conversion (System.Address, Cluster_Ref); + + ------------ + -- Get_35 -- + ------------ + + function Get_35 (Arr : System.Address; N : Natural) return Bits_35 is + C : constant Cluster_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8)); + begin + case N07 (Uns (N) mod 8) is + when 0 => return C.E0; + when 1 => return C.E1; + when 2 => return C.E2; + when 3 => return C.E3; + when 4 => return C.E4; + when 5 => return C.E5; + when 6 => return C.E6; + when 7 => return C.E7; + end case; + end Get_35; + + ------------ + -- Set_35 -- + ------------ + + procedure Set_35 (Arr : System.Address; N : Natural; E : Bits_35) is + C : constant Cluster_Ref := To_Ref (Arr + Bits * Ofs (Uns (N) / 8)); + begin + case N07 (Uns (N) mod 8) is + when 0 => C.E0 := E; + when 1 => C.E1 := E; + when 2 => C.E2 := E; + when 3 => C.E3 := E; + when 4 => C.E4 := E; + when 5 => C.E5 := E; + when 6 => C.E6 := E; + when 7 => C.E7 := E; + end case; + end Set_35; + +end System.Pack_35; -- cgit v1.2.3