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Diffstat (limited to 'gcc-4.4.3/gcc/ada/g-bytswa.adb')
| -rw-r--r-- | gcc-4.4.3/gcc/ada/g-bytswa.adb | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/gcc-4.4.3/gcc/ada/g-bytswa.adb b/gcc-4.4.3/gcc/ada/g-bytswa.adb deleted file mode 100644 index 36eb12dcf..000000000 --- a/gcc-4.4.3/gcc/ada/g-bytswa.adb +++ /dev/null @@ -1,151 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- G N A T . B Y T E _ S W A P P I N G -- --- -- --- B o d y -- --- -- --- Copyright (C) 2006-2007, AdaCore -- --- -- --- 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, 51 Franklin Street, Fifth Floor, -- --- Boston, MA 02110-1301, 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 is a general implementation that does not take advantage of --- any machine-specific instructions. - -with Interfaces; use Interfaces; -with Ada.Unchecked_Conversion; - -package body GNAT.Byte_Swapping is - - -------------- - -- Swapped2 -- - -------------- - - function Swapped2 (Input : Item) return Item is - - function As_U16 is new Ada.Unchecked_Conversion - (Source => Item, Target => Unsigned_16); - - function As_Item is new Ada.Unchecked_Conversion - (Source => Unsigned_16, Target => Item); - - X : constant Unsigned_16 := As_U16 (Input); - - begin - return As_Item ((Shift_Left (X, 8) and 16#FF00#) or - (Shift_Right (X, 8) and 16#00FF#)); - end Swapped2; - - -------------- - -- Swapped4 -- - -------------- - - function Swapped4 (Input : Item) return Item is - - function As_U32 is new Ada.Unchecked_Conversion - (Source => Item, Target => Unsigned_32); - - function As_Item is new Ada.Unchecked_Conversion - (Source => Unsigned_32, Target => Item); - - X : constant Unsigned_32 := As_U32 (Input); - - begin - return As_Item ((Shift_Right (X, 24) and 16#0000_00FF#) or - (Shift_Right (X, 8) and 16#0000_FF00#) or - (Shift_Left (X, 8) and 16#00FF_0000#) or - (Shift_Left (X, 24) and 16#FF00_0000#)); - end Swapped4; - - -------------- - -- Swapped8 -- - -------------- - - function Swapped8 (Input : Item) return Item is - - function As_U64 is new Ada.Unchecked_Conversion - (Source => Item, Target => Unsigned_64); - - function As_Item is new Ada.Unchecked_Conversion - (Source => Unsigned_64, Target => Item); - - X : constant Unsigned_64 := As_U64 (Input); - - Low, High : aliased Unsigned_32; - - begin - Low := Unsigned_32 (X and 16#0000_0000_FFFF_FFFF#); - Swap4 (Low'Address); - High := Unsigned_32 (Shift_Right (X, 32)); - Swap4 (High'Address); - return As_Item - (Shift_Left (Unsigned_64 (Low), 32) or Unsigned_64 (High)); - end Swapped8; - - ----------- - -- Swap2 -- - ----------- - - procedure Swap2 (Location : System.Address) is - X : Unsigned_16; - for X'Address use Location; - begin - X := (Shift_Left (X, 8) and 16#FF00#) or - (Shift_Right (X, 8) and 16#00FF#); - end Swap2; - - ----------- - -- Swap4 -- - ----------- - - procedure Swap4 (Location : System.Address) is - X : Unsigned_32; - for X'Address use Location; - begin - X := (Shift_Right (X, 24) and 16#0000_00FF#) or - (Shift_Right (X, 8) and 16#0000_FF00#) or - (Shift_Left (X, 8) and 16#00FF_0000#) or - (Shift_Left (X, 24) and 16#FF00_0000#); - end Swap4; - - ----------- - -- Swap8 -- - ----------- - - procedure Swap8 (Location : System.Address) is - X : Unsigned_64; - for X'Address use Location; - - Low, High : aliased Unsigned_32; - - begin - Low := Unsigned_32 (X and 16#0000_0000_FFFF_FFFF#); - Swap4 (Low'Address); - High := Unsigned_32 (Shift_Right (X, 32)); - Swap4 (High'Address); - X := Shift_Left (Unsigned_64 (Low), 32) or Unsigned_64 (High); - end Swap8; - -end GNAT.Byte_Swapping; |