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------------------------------------------------------------------------------

--                                                                          --

--                        GNAT RUN-TIME COMPONENTS                          --

--                                                                          --

--                         S Y S T E M . W I N 3 2                          --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--         Copyright (C) 2008-2009, 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.      --

--                                                                          --

------------------------------------------------------------------------------

--  This package plus its child provide the low level interface to the Win32

--  API. The core part of the Win32 API (common to RTX and Win32) is in this

--  package, and an additional part of the Win32 API which is not supported by

--  RTX is in package System.Win33.Ext.

with Interfaces.C;

package System.Win32 is

   pragma Pure;

   -------------------

   -- General Types --

   -------------------

   --  The LARGE_INTEGER type is actually a fixed point type

   --  that only can represent integers. The reason for this is

   --  easier conversion to Duration or other fixed point types.

   --  (See Operations.Clock)

   type LARGE_INTEGER is delta 1.0 range -2.0**63 .. 2.0**63 - 1.0;

   subtype PVOID is Address;

   type HANDLE is new Interfaces.C.ptrdiff_t;

   INVALID_HANDLE_VALUE : constant HANDLE := -1;

   INVALID_FILE_SIZE    : constant := 16#FFFFFFFF#;

   type DWORD  is new Interfaces.C.unsigned_long;

   type WORD   is new Interfaces.C.unsigned_short;

   type BYTE   is new Interfaces.C.unsigned_char;

   type LONG   is new Interfaces.C.long;

   type CHAR   is new Interfaces.C.char;

   type BOOL   is new Interfaces.C.int;

   for BOOL'Size use Interfaces.C.int'Size;

   type Bits1  is range 0 .. 2 ** 1 - 1;

   type Bits2  is range 0 .. 2 ** 2 - 1;

   type Bits17 is range 0 .. 2 ** 17 - 1;

   for Bits1'Size  use 1;

   for Bits2'Size  use 2;

   for Bits17'Size use 17;

   FALSE : constant := 0;

   TRUE  : constant := 1;

   function GetLastError return DWORD;

   pragma Import (Stdcall, GetLastError, "GetLastError");

   -----------

   -- Files --

   -----------

   CP_UTF8                            : constant := 65001;

   CP_ACP                             : constant := 0;

   GENERIC_READ                       : constant := 16#80000000#;

   GENERIC_WRITE                      : constant := 16#40000000#;

   CREATE_NEW                         : constant := 1;

   CREATE_ALWAYS                      : constant := 2;

   OPEN_EXISTING                      : constant := 3;

   OPEN_ALWAYS                        : constant := 4;

   TRUNCATE_EXISTING                  : constant := 5;

   FILE_SHARE_DELETE                  : constant := 16#00000004#;

   FILE_SHARE_READ                    : constant := 16#00000001#;

   FILE_SHARE_WRITE                   : constant := 16#00000002#;

   FILE_BEGIN                         : constant := 0;

   FILE_CURRENT                       : constant := 1;

   FILE_END                           : constant := 2;

   PAGE_NOACCESS                      : constant := 16#0001#;

   PAGE_READONLY                      : constant := 16#0002#;

   PAGE_READWRITE                     : constant := 16#0004#;

   PAGE_WRITECOPY                     : constant := 16#0008#;

   PAGE_EXECUTE                       : constant := 16#0010#;

   FILE_MAP_ALL_ACCESS                : constant := 16#F001f#;

   FILE_MAP_READ                      : constant := 4;

   FILE_MAP_WRITE                     : constant := 2;

   FILE_MAP_COPY                      : constant := 1;

   FILE_ADD_FILE                      : constant := 16#0002#;

   FILE_ADD_SUBDIRECTORY              : constant := 16#0004#;

   FILE_APPEND_DATA                   : constant := 16#0004#;

   FILE_CREATE_PIPE_INSTANCE          : constant := 16#0004#;

   FILE_DELETE_CHILD                  : constant := 16#0040#;

   FILE_EXECUTE                       : constant := 16#0020#;

   FILE_LIST_DIRECTORY                : constant := 16#0001#;

   FILE_READ_ATTRIBUTES               : constant := 16#0080#;

   FILE_READ_DATA                     : constant := 16#0001#;

   FILE_READ_EA                       : constant := 16#0008#;

   FILE_TRAVERSE                      : constant := 16#0020#;

   FILE_WRITE_ATTRIBUTES              : constant := 16#0100#;

   FILE_WRITE_DATA                    : constant := 16#0002#;

   FILE_WRITE_EA                      : constant := 16#0010#;

   STANDARD_RIGHTS_READ               : constant := 16#20000#;

   STANDARD_RIGHTS_WRITE              : constant := 16#20000#;

   SYNCHRONIZE                        : constant := 16#100000#;

   FILE_ATTRIBUTE_READONLY            : constant := 16#00000001#;

   FILE_ATTRIBUTE_HIDDEN              : constant := 16#00000002#;

   FILE_ATTRIBUTE_SYSTEM              : constant := 16#00000004#;

   FILE_ATTRIBUTE_DIRECTORY           : constant := 16#00000010#;

   FILE_ATTRIBUTE_ARCHIVE             : constant := 16#00000020#;

   FILE_ATTRIBUTE_DEVICE              : constant := 16#00000040#;

   FILE_ATTRIBUTE_NORMAL              : constant := 16#00000080#;

   FILE_ATTRIBUTE_TEMPORARY           : constant := 16#00000100#;

   FILE_ATTRIBUTE_SPARSE_FILE         : constant := 16#00000200#;

   FILE_ATTRIBUTE_REPARSE_POINT       : constant := 16#00000400#;

   FILE_ATTRIBUTE_COMPRESSED          : constant := 16#00000800#;

   FILE_ATTRIBUTE_OFFLINE             : constant := 16#00001000#;

   FILE_ATTRIBUTE_NOT_CONTENT_INDEXED : constant := 16#00002000#;

   FILE_ATTRIBUTE_ENCRYPTED           : constant := 16#00004000#;

   FILE_ATTRIBUTE_VALID_FLAGS         : constant := 16#00007fb7#;

   FILE_ATTRIBUTE_VALID_SET_FLAGS     : constant := 16#000031a7#;

   type OVERLAPPED is record

      Internal     : DWORD;

      InternalHigh : DWORD;

      Offset       : DWORD;

      OffsetHigh   : DWORD;

      hEvent       : HANDLE;

   end record;

   type SECURITY_ATTRIBUTES is record

      nLength             : DWORD;

      pSecurityDescriptor : PVOID;

      bInheritHandle      : BOOL;

   end record;

   function CreateFileA

     (lpFileName            : Address;

      dwDesiredAccess       : DWORD;

      dwShareMode           : DWORD;

      lpSecurityAttributes  : access SECURITY_ATTRIBUTES;

      dwCreationDisposition : DWORD;

      dwFlagsAndAttributes  : DWORD;

      hTemplateFile         : HANDLE) return HANDLE;

   pragma Import (Stdcall, CreateFileA, "CreateFileA");

   function CreateFile

     (lpFileName            : Address;

      dwDesiredAccess       : DWORD;

      dwShareMode           : DWORD;

      lpSecurityAttributes  : access SECURITY_ATTRIBUTES;

      dwCreationDisposition : DWORD;

      dwFlagsAndAttributes  : DWORD;

      hTemplateFile         : HANDLE) return HANDLE;

   pragma Import (Stdcall, CreateFile, "CreateFileW");

   function GetFileSize

     (hFile          : HANDLE;

      lpFileSizeHigh : access DWORD) return BOOL;

   pragma Import (Stdcall, GetFileSize, "GetFileSize");

   function SetFilePointer

     (hFile                : HANDLE;

      lDistanceToMove      : LONG;

      lpDistanceToMoveHigh : access LONG;

      dwMoveMethod         : DWORD) return DWORD;

   pragma Import (Stdcall, SetFilePointer, "SetFilePointer");

   function WriteFile

     (hFile                  : HANDLE;

      lpBuffer               : Address;

      nNumberOfBytesToWrite  : DWORD;

      lpNumberOfBytesWritten : access DWORD;

      lpOverlapped           : access OVERLAPPED) return BOOL;

   pragma Import (Stdcall, WriteFile, "WriteFile");

   function ReadFile

     (hFile                : HANDLE;

      lpBuffer             : Address;

      nNumberOfBytesToRead : DWORD;

      lpNumberOfBytesRead  : access DWORD;

      lpOverlapped         : access OVERLAPPED) return BOOL;

   pragma Import (Stdcall, ReadFile, "ReadFile");

   function CloseHandle (hObject : HANDLE) return BOOL;

   pragma Import (Stdcall, CloseHandle, "CloseHandle");

   function CreateFileMapping

     (hFile                : HANDLE;

      lpSecurityAttributes : access SECURITY_ATTRIBUTES;

      flProtect            : DWORD;

      dwMaximumSizeHigh    : DWORD;

      dwMaximumSizeLow     : DWORD;

      lpName               : Address) return HANDLE;

   pragma Import (Stdcall, CreateFileMapping, "CreateFileMappingA");

   function MapViewOfFile

     (hFileMappingObject   : HANDLE;

      dwDesiredAccess      : DWORD;

      dwFileOffsetHigh     : DWORD;

      dwFileOffsetLow      : DWORD;

      dwNumberOfBytesToMap : DWORD) return System.Address;

   pragma Import (Stdcall, MapViewOfFile, "MapViewOfFile");

   function UnmapViewOfFile (lpBaseAddress : System.Address) return BOOL;

   pragma Import (Stdcall, UnmapViewOfFile, "UnmapViewOfFile");

   function MultiByteToWideChar

     (CodePage       : WORD;

      dwFlags        : DWORD;

      lpMultiByteStr : System.Address;

      cchMultiByte   : WORD;

      lpWideCharStr  : System.Address;

      cchWideChar    : WORD) return WORD;

   pragma Import (Stdcall, MultiByteToWideChar, "MultiByteToWideChar");

   ------------------------

   -- System Information --

   ------------------------

   subtype ProcessorId is DWORD;

   type SYSTEM_INFO is record

      dwOemId                     : DWORD;

      dwPageSize                  : DWORD;

      lpMinimumApplicationAddress : PVOID;

      lpMaximumApplicationAddress : PVOID;

      dwActiveProcessorMask       : DWORD;

      dwNumberOfProcessors        : DWORD;

      dwProcessorType             : DWORD;

      dwAllocationGranularity     : DWORD;

      dwReserved                  : DWORD;

   end record;

   procedure GetSystemInfo (SI : access SYSTEM_INFO);

   pragma Import (Stdcall, GetSystemInfo, "GetSystemInfo");

   ---------------------

   -- Time Management --

   ---------------------

   type SYSTEMTIME is record

      wYear         : WORD;

      wMonth        : WORD;

      wDayOfWeek    : WORD;

      wDay          : WORD;

      wHour         : WORD;

      wMinute       : WORD;

      wSecond       : WORD;

      wMilliseconds : WORD;

   end record;

   procedure GetSystemTime (pSystemTime : access SYSTEMTIME);

   pragma Import (Stdcall, GetSystemTime, "GetSystemTime");

   procedure GetSystemTimeAsFileTime (lpFileTime : access Long_Long_Integer);

   pragma Import (Stdcall, GetSystemTimeAsFileTime, "GetSystemTimeAsFileTime");

   function FileTimeToSystemTime

     (lpFileTime   : access Long_Long_Integer;

      lpSystemTime : access SYSTEMTIME) return BOOL;

   pragma Import (Stdcall, FileTimeToSystemTime, "FileTimeToSystemTime");

   function SystemTimeToFileTime

     (lpSystemTime : access SYSTEMTIME;

      lpFileTime   : access Long_Long_Integer) return BOOL;

   pragma Import (Stdcall, SystemTimeToFileTime, "SystemTimeToFileTime");

   function FileTimeToLocalFileTime

     (lpFileTime      : access Long_Long_Integer;

      lpLocalFileTime : access Long_Long_Integer) return BOOL;

   pragma Import (Stdcall, FileTimeToLocalFileTime, "FileTimeToLocalFileTime");

   function LocalFileTimeToFileTime

     (lpFileTime      : access Long_Long_Integer;

      lpLocalFileTime : access Long_Long_Integer) return BOOL;

   pragma Import (Stdcall, LocalFileTimeToFileTime, "LocalFileTimeToFileTime");

   procedure Sleep (dwMilliseconds : DWORD);

   pragma Import (Stdcall, Sleep, External_Name => "Sleep");

   function QueryPerformanceCounter

     (lpPerformanceCount : access LARGE_INTEGER) return BOOL;

   pragma Import

     (Stdcall, QueryPerformanceCounter, "QueryPerformanceCounter");

end System.Win32;