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Diffstat (limited to 'gcc/ada/s-pack44.adb')
| -rw-r--r-- | gcc/ada/s-pack44.adb | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/gcc/ada/s-pack44.adb b/gcc/ada/s-pack44.adb deleted file mode 100644 index f7fe185573a..00000000000 --- a/gcc/ada/s-pack44.adb +++ /dev/null @@ -1,250 +0,0 @@ ------------------------------------------------------------------------------- --- -- --- GNAT RUN-TIME COMPONENTS -- --- -- --- S Y S T E M . P A C K _ 4 4 -- --- -- --- B o d y -- --- -- --- Copyright (C) 1992-2014, 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. -- --- -- ------------------------------------------------------------------------------- - -with System.Storage_Elements; -with System.Unsigned_Types; - -package body System.Pack_44 is - - subtype Bit_Order is System.Bit_Order; - Reverse_Bit_Order : constant Bit_Order := - Bit_Order'Val (1 - Bit_Order'Pos (System.Default_Bit_Order)); - - 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_44; - 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; - - type Rev_Cluster is new Cluster - with Bit_Order => Reverse_Bit_Order, - Scalar_Storage_Order => Reverse_Bit_Order; - type Rev_Cluster_Ref is access Rev_Cluster; - - -- The following declarations are for the case where the address - -- passed to GetU_44 or SetU_44 is not guaranteed to be aligned. - -- These routines are used when the packed array is itself a - -- component of a packed record, and therefore may not be aligned. - - type ClusterU is new Cluster; - for ClusterU'Alignment use 1; - - type ClusterU_Ref is access ClusterU; - - type Rev_ClusterU is new ClusterU - with Bit_Order => Reverse_Bit_Order, - Scalar_Storage_Order => Reverse_Bit_Order; - type Rev_ClusterU_Ref is access Rev_ClusterU; - - ------------ - -- Get_44 -- - ------------ - - function Get_44 - (Arr : System.Address; - N : Natural; - Rev_SSO : Boolean) return Bits_44 - is - A : constant System.Address := Arr + Bits * Ofs (Uns (N) / 8); - C : Cluster_Ref with Address => A'Address, Import; - RC : Rev_Cluster_Ref with Address => A'Address, Import; - begin - if Rev_SSO then - case N07 (Uns (N) mod 8) is - when 0 => return RC.E0; - when 1 => return RC.E1; - when 2 => return RC.E2; - when 3 => return RC.E3; - when 4 => return RC.E4; - when 5 => return RC.E5; - when 6 => return RC.E6; - when 7 => return RC.E7; - end case; - - else - 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 if; - end Get_44; - - ------------- - -- GetU_44 -- - ------------- - - function GetU_44 - (Arr : System.Address; - N : Natural; - Rev_SSO : Boolean) return Bits_44 - is - A : constant System.Address := Arr + Bits * Ofs (Uns (N) / 8); - C : ClusterU_Ref with Address => A'Address, Import; - RC : Rev_ClusterU_Ref with Address => A'Address, Import; - begin - if Rev_SSO then - case N07 (Uns (N) mod 8) is - when 0 => return RC.E0; - when 1 => return RC.E1; - when 2 => return RC.E2; - when 3 => return RC.E3; - when 4 => return RC.E4; - when 5 => return RC.E5; - when 6 => return RC.E6; - when 7 => return RC.E7; - end case; - - else - 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 if; - end GetU_44; - - ------------ - -- Set_44 -- - ------------ - - procedure Set_44 - (Arr : System.Address; - N : Natural; - E : Bits_44; - Rev_SSO : Boolean) - is - A : constant System.Address := Arr + Bits * Ofs (Uns (N) / 8); - C : Cluster_Ref with Address => A'Address, Import; - RC : Rev_Cluster_Ref with Address => A'Address, Import; - begin - if Rev_SSO then - case N07 (Uns (N) mod 8) is - when 0 => RC.E0 := E; - when 1 => RC.E1 := E; - when 2 => RC.E2 := E; - when 3 => RC.E3 := E; - when 4 => RC.E4 := E; - when 5 => RC.E5 := E; - when 6 => RC.E6 := E; - when 7 => RC.E7 := E; - end case; - else - 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 if; - end Set_44; - - ------------- - -- SetU_44 -- - ------------- - - procedure SetU_44 - (Arr : System.Address; - N : Natural; - E : Bits_44; - Rev_SSO : Boolean) - is - A : constant System.Address := Arr + Bits * Ofs (Uns (N) / 8); - C : ClusterU_Ref with Address => A'Address, Import; - RC : Rev_ClusterU_Ref with Address => A'Address, Import; - begin - if Rev_SSO then - case N07 (Uns (N) mod 8) is - when 0 => RC.E0 := E; - when 1 => RC.E1 := E; - when 2 => RC.E2 := E; - when 3 => RC.E3 := E; - when 4 => RC.E4 := E; - when 5 => RC.E5 := E; - when 6 => RC.E6 := E; - when 7 => RC.E7 := E; - end case; - else - 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 if; - end SetU_44; - -end System.Pack_44; |