aboutsummaryrefslogtreecommitdiffstats
path: root/gcc-4.7/gcc/ada/s-carun8.adb
diff options
context:
space:
mode:
Diffstat (limited to 'gcc-4.7/gcc/ada/s-carun8.adb')
-rw-r--r--gcc-4.7/gcc/ada/s-carun8.adb144
1 files changed, 0 insertions, 144 deletions
diff --git a/gcc-4.7/gcc/ada/s-carun8.adb b/gcc-4.7/gcc/ada/s-carun8.adb
deleted file mode 100644
index 450e04765..000000000
--- a/gcc-4.7/gcc/ada/s-carun8.adb
+++ /dev/null
@@ -1,144 +0,0 @@
-------------------------------------------------------------------------------
--- --
--- GNAT RUN-TIME LIBRARY COMPONENTS --
--- --
--- S Y S T E M . C O M P A R E _ A R R A Y _ U N S I G N E D _ 8 --
--- --
--- B o d y --
--- --
--- Copyright (C) 2002-2009, 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 --
--- <http://www.gnu.org/licenses/>. --
--- --
--- GNAT was originally developed by the GNAT team at New York University. --
--- Extensive contributions were provided by Ada Core Technologies Inc. --
--- --
-------------------------------------------------------------------------------
-
-pragma Compiler_Unit;
-
-with System.Address_Operations; use System.Address_Operations;
-
-with Ada.Unchecked_Conversion;
-
-package body System.Compare_Array_Unsigned_8 is
-
- type Word is mod 2 ** 32;
- -- Used to process operands by words
-
- type Big_Words is array (Natural) of Word;
- type Big_Words_Ptr is access Big_Words;
- for Big_Words_Ptr'Storage_Size use 0;
- -- Array type used to access by words
-
- type Byte is mod 2 ** 8;
- -- Used to process operands by bytes
-
- type Big_Bytes is array (Natural) of Byte;
- type Big_Bytes_Ptr is access Big_Bytes;
- for Big_Bytes_Ptr'Storage_Size use 0;
- -- Array type used to access by bytes
-
- function To_Big_Words is new
- Ada.Unchecked_Conversion (System.Address, Big_Words_Ptr);
-
- function To_Big_Bytes is new
- Ada.Unchecked_Conversion (System.Address, Big_Bytes_Ptr);
-
- ----------------------
- -- Compare_Array_U8 --
- ----------------------
-
- function Compare_Array_U8
- (Left : System.Address;
- Right : System.Address;
- Left_Len : Natural;
- Right_Len : Natural) return Integer
- is
- Compare_Len : constant Natural := Natural'Min (Left_Len, Right_Len);
-
- begin
- -- If operands are non-aligned, or length is too short, go by bytes
-
- if (ModA (OrA (Left, Right), 4) /= 0) or else Compare_Len < 4 then
- return Compare_Array_U8_Unaligned (Left, Right, Left_Len, Right_Len);
- end if;
-
- -- Here we can go by words
-
- declare
- LeftP : constant Big_Words_Ptr :=
- To_Big_Words (Left);
- RightP : constant Big_Words_Ptr :=
- To_Big_Words (Right);
- Words_To_Compare : constant Natural := Compare_Len / 4;
- Bytes_Compared_As_Words : constant Natural := Words_To_Compare * 4;
-
- begin
- for J in 0 .. Words_To_Compare - 1 loop
- if LeftP (J) /= RightP (J) then
- return Compare_Array_U8_Unaligned
- (AddA (Left, Address (4 * J)),
- AddA (Right, Address (4 * J)),
- 4, 4);
- end if;
- end loop;
-
- return Compare_Array_U8_Unaligned
- (AddA (Left, Address (Bytes_Compared_As_Words)),
- AddA (Right, Address (Bytes_Compared_As_Words)),
- Left_Len - Bytes_Compared_As_Words,
- Right_Len - Bytes_Compared_As_Words);
- end;
- end Compare_Array_U8;
-
- --------------------------------
- -- Compare_Array_U8_Unaligned --
- --------------------------------
-
- function Compare_Array_U8_Unaligned
- (Left : System.Address;
- Right : System.Address;
- Left_Len : Natural;
- Right_Len : Natural) return Integer
- is
- Compare_Len : constant Natural := Natural'Min (Left_Len, Right_Len);
-
- LeftP : constant Big_Bytes_Ptr := To_Big_Bytes (Left);
- RightP : constant Big_Bytes_Ptr := To_Big_Bytes (Right);
-
- begin
- for J in 0 .. Compare_Len - 1 loop
- if LeftP (J) /= RightP (J) then
- if LeftP (J) > RightP (J) then
- return +1;
- else
- return -1;
- end if;
- end if;
- end loop;
-
- if Left_Len = Right_Len then
- return 0;
- elsif Left_Len > Right_Len then
- return +1;
- else
- return -1;
- end if;
- end Compare_Array_U8_Unaligned;
-
-end System.Compare_Array_Unsigned_8;