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Diffstat (limited to 'gcc-4.4.3/gcc/ada/g-bytswa-x86.adb')
| -rw-r--r-- | gcc-4.4.3/gcc/ada/g-bytswa-x86.adb | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/gcc-4.4.3/gcc/ada/g-bytswa-x86.adb b/gcc-4.4.3/gcc/ada/g-bytswa-x86.adb deleted file mode 100644 index 3af951617..000000000 --- a/gcc-4.4.3/gcc/ada/g-bytswa-x86.adb +++ /dev/null @@ -1,194 +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 machine-specific version of this package. --- It uses instructions available on Intel 486 processors (or later). - -with Interfaces; use Interfaces; -with System.Machine_Code; use System.Machine_Code; -with Ada.Unchecked_Conversion; - -package body GNAT.Byte_Swapping is - - ----------------------- - -- Local Subprograms -- - ----------------------- - - function Swapped32 (Value : Unsigned_32) return Unsigned_32; - pragma Inline_Always (Swapped32); - - -------------- - -- 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 : Unsigned_16 := As_U16 (Input); - - begin - Asm ("xchgb %b0,%h0", - Unsigned_16'Asm_Output ("=q", X), - Unsigned_16'Asm_Input ("0", X)); - return As_Item (X); - 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 : Unsigned_32 := As_U32 (Input); - - begin - Asm ("bswap %0", - Unsigned_32'Asm_Output ("=r", X), - Unsigned_32'Asm_Input ("0", X)); - return As_Item (X); - end Swapped4; - - -------------- - -- Swapped8 -- - -------------- - - function Swapped8 (Input : Item) return Item is - - function As_U64 is new Ada.Unchecked_Conversion - (Source => Item, Target => Unsigned_64); - - X : constant Unsigned_64 := As_U64 (Input); - - type Two_Words is array (0 .. 1) of Unsigned_32; - for Two_Words'Component_Size use Unsigned_32'Size; - - function As_Item is new Ada.Unchecked_Conversion - (Source => Two_Words, Target => Item); - - Result : Two_Words; - - begin - Asm ("xchgl %0,%1", - Outputs => - (Unsigned_32'Asm_Output ("=r", Result (0)), - Unsigned_32'Asm_Output ("=r", Result (1))), - Inputs => - (Unsigned_32'Asm_Input ("0", - Swapped32 (Unsigned_32 (X and 16#0000_0000_FFFF_FFFF#))), - Unsigned_32'Asm_Input ("1", - Swapped32 (Unsigned_32 (Shift_Right (X, 32)))))); - return As_Item (Result); - end Swapped8; - - ----------- - -- Swap2 -- - ----------- - - procedure Swap2 (Location : System.Address) is - - X : Unsigned_16; - for X'Address use Location; - - begin - Asm ("xchgb %b0,%h0", - Unsigned_16'Asm_Output ("=q", X), - Unsigned_16'Asm_Input ("0", X)); - end Swap2; - - ----------- - -- Swap4 -- - ----------- - - procedure Swap4 (Location : System.Address) is - - X : Unsigned_32; - for X'Address use Location; - - begin - Asm ("bswap %0", - Unsigned_32'Asm_Output ("=r", X), - Unsigned_32'Asm_Input ("0", X)); - end Swap4; - - --------------- - -- Swapped32 -- - --------------- - - function Swapped32 (Value : Unsigned_32) return Unsigned_32 is - X : Unsigned_32 := Value; - begin - Asm ("bswap %0", - Unsigned_32'Asm_Output ("=r", X), - Unsigned_32'Asm_Input ("0", X)); - return X; - end Swapped32; - - ----------- - -- Swap8 -- - ----------- - - procedure Swap8 (Location : System.Address) is - - X : Unsigned_64; - for X'Address use Location; - - type Two_Words is array (0 .. 1) of Unsigned_32; - for Two_Words'Component_Size use Unsigned_32'Size; - - Words : Two_Words; - for Words'Address use Location; - - begin - Asm ("xchgl %0,%1", - Outputs => - (Unsigned_32'Asm_Output ("=r", Words (0)), - Unsigned_32'Asm_Output ("=r", Words (1))), - Inputs => - (Unsigned_32'Asm_Input ("0", - Swapped32 (Unsigned_32 (X and 16#0000_0000_FFFF_FFFF#))), - Unsigned_32'Asm_Input ("1", - Swapped32 (Unsigned_32 (Shift_Right (X, 32)))))); - end Swap8; - -end GNAT.Byte_Swapping; |