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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [ada/] [s-pooglo.adb] - Rev 714
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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . P O O L _ G L O B A L -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2011, 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_Pools; use System.Storage_Pools; with System.Memory; package body System.Pool_Global is package SSE renames System.Storage_Elements; -------------- -- Allocate -- -------------- overriding procedure Allocate (Pool : in out Unbounded_No_Reclaim_Pool; Address : out System.Address; Storage_Size : SSE.Storage_Count; Alignment : SSE.Storage_Count) is use SSE; pragma Warnings (Off, Pool); Aligned_Size : Storage_Count := Storage_Size; Aligned_Address : System.Address; Allocated : System.Address; begin if Alignment > Standard'System_Allocator_Alignment then Aligned_Size := Aligned_Size + Alignment; end if; Allocated := Memory.Alloc (Memory.size_t (Aligned_Size)); -- The call to Alloc returns an address whose alignment is compatible -- with the worst case alignment requirement for the machine; thus the -- Alignment argument can be safely ignored. if Allocated = Null_Address then raise Storage_Error; end if; -- Case where alignment requested is greater than the alignment that is -- guaranteed to be provided by the system allocator. if Alignment > Standard'System_Allocator_Alignment then -- Realign the returned address Aligned_Address := To_Address (To_Integer (Allocated) + Integer_Address (Alignment) - (To_Integer (Allocated) mod Integer_Address (Alignment))); -- Save the block address declare Saved_Address : System.Address; pragma Import (Ada, Saved_Address); for Saved_Address'Address use Aligned_Address - Storage_Offset (System.Address'Size / Storage_Unit); begin Saved_Address := Allocated; end; Address := Aligned_Address; else Address := Allocated; end if; end Allocate; ---------------- -- Deallocate -- ---------------- overriding procedure Deallocate (Pool : in out Unbounded_No_Reclaim_Pool; Address : System.Address; Storage_Size : SSE.Storage_Count; Alignment : SSE.Storage_Count) is use System.Storage_Elements; pragma Warnings (Off, Pool); pragma Warnings (Off, Storage_Size); begin -- Case where the alignment of the block exceeds the guaranteed -- alignment required by the system storage allocator, meaning that -- this was specially wrapped at allocation time. if Alignment > Standard'System_Allocator_Alignment then -- Retrieve the block address declare Saved_Address : System.Address; pragma Import (Ada, Saved_Address); for Saved_Address'Address use Address - Storage_Offset (System.Address'Size / Storage_Unit); begin Memory.Free (Saved_Address); end; else Memory.Free (Address); end if; end Deallocate; ------------------ -- Storage_Size -- ------------------ overriding function Storage_Size (Pool : Unbounded_No_Reclaim_Pool) return SSE.Storage_Count is pragma Warnings (Off, Pool); begin -- Intuitively, should return System.Memory_Size. But on Sun/Alsys, -- System.Memory_Size > System.Max_Int, which means all you can do with -- it is raise CONSTRAINT_ERROR... return SSE.Storage_Count'Last; end Storage_Size; end System.Pool_Global;
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