JwaWowNT16.pas
资源名称:win32api.zip [点击查看]
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上传日期:2009-07-28
资源大小:1749k
文件大小:9k
源码类别:
Windows编程
开发平台:
Delphi
- {******************************************************************************}
- { }
- { 16 bit Generic Thunks API interface Unit for Object Pascal }
- { }
- { Portions created by Microsoft are Copyright (C) 1995-2001 Microsoft }
- { Corporation. All Rights Reserved. }
- { }
- { The original file is: wownt16.h, released June 2000. The original Pascal }
- { code is: WowNT16.pas, released December 2000. The initial developer of the }
- { Pascal code is Marcel van Brakel (brakelm@chello.nl). }
- { }
- { Portions created by Marcel van Brakel are Copyright (C) 1999-2001 }
- { Marcel van Brakel. All Rights Reserved. }
- { }
- { Obtained through: Joint Endeavour of Delphi Innovators (Project JEDI) }
- { }
- { You may retrieve the latest version of this file at the Project JEDI home }
- { page, located at http://delphi-jedi.org or my personal homepage located at }
- { http://members.chello.nl/m.vanbrakel2 }
- { }
- { The contents of this file are used with permission, subject to the Mozilla }
- { Public License Version 1.1 (the "License"); you may not use this file except }
- { in compliance with the License. You may obtain a copy of the License at }
- { http://www.mozilla.org/MPL/MPL-1.1.html }
- { }
- { Software distributed under the License is distributed on an "AS IS" basis, }
- { WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for }
- { the specific language governing rights and limitations under the License. }
- { }
- { Alternatively, the contents of this file may be used under the terms of the }
- { GNU Lesser General Public License (the "LGPL License"), in which case the }
- { provisions of the LGPL License are applicable instead of those above. }
- { If you wish to allow use of your version of this file only under the terms }
- { of the LGPL License and not to allow others to use your version of this file }
- { under the MPL, indicate your decision by deleting the provisions above and }
- { replace them with the notice and other provisions required by the LGPL }
- { License. If you do not delete the provisions above, a recipient may use }
- { your version of this file under either the MPL or the LGPL License. }
- { }
- { For more information about the LGPL: http://www.gnu.org/copyleft/lesser.html }
- { }
- {******************************************************************************}
- unit JwaWowNT16;
- {$WEAKPACKAGEUNIT}
- {$HPPEMIT ''}
- {$HPPEMIT '#include "wownt16.h"'}
- {$HPPEMIT ''}
- {$I WINDEFINES.INC}
- interface
- uses
- JwaWinType;
- //
- // 16:16 -> 0:32 Pointer translation.
- //
- // GetVDMPointer32W will convert the passed in 16-bit address
- // to the equivalent 32-bit flat pointer. The upper 16 bits
- // of the address are treated according to the value passed in
- // fMode: if fMode = 1, then the hiword of vp is used as a
- // protected mode selector. Otherwise it is used as a real mode
- // segment value.
- // The lower 16 bits are treated as the offset.
- //
- // The return value is 0 if the selector is invalid.
- //
- // NOTE: Limit checking is not performed in the retail build
- // of Windows NT. It is performed in the checked (debug) build
- // of WOW32.DLL, which will cause 0 to be returned when the
- // limit is exceeded by the supplied offset.
- //
- function GetVDMPointer32W(vp: LPVOID; fMode: UINT): DWORD; stdcall;
- {$EXTERNALSYM GetVDMPointer32W}
- //
- // Win32 module management.
- //
- // The following routines accept parameters that correspond directly
- // to the respective Win32 API function calls that they invoke. Refer
- // to the Win32 reference documentation for more detail.
- function LoadLibraryEx32W(lpszLibFile: LPCSTR; hFile, dwFlags: DWORD): DWORD; stdcall;
- {$EXTERNALSYM LoadLibraryEx32W}
- function GetProcAddress32W(hModule: DWORD; lpszProc: LPCSTR): DWORD; stdcall;
- {$EXTERNALSYM GetProcAddress32W}
- function FreeLibrary32W(hLibModule: DWORD): DWORD; stdcall;
- {$EXTERNALSYM FreeLibrary32W}
- //
- // Generic Thunk Routine:
- //
- // CallProc32W
- //
- // Transitions to 32 bits and calls specified routine
- //
- // This routine can pass a variable number of arguments, up to 32, to the
- // target 32-bit routine. These arguments are given to CallProc32W following
- // the 3 required parameters.
- //
- // DWORD cParams - Number of optional DWORD parameters (0-32)
- //
- // LPVOID fAddressConvert - Bit Field, for 16:16 address Convertion. The
- // optional parameters can be automatically converted
- // from a 16:16 address format to flat by specifying
- // a 1 bit in the corresponding position in this mask.
- // eg (bit 1 means convert parameter 1 from 16:16
- // to flat address before calling routine)
- //
- // DWORD lpProcAddress - 32 bit native address to call (use LoadLibraryEx32W
- // and GetProcAddress32W to get this address).
- //
- // Returns:
- // What ever the API returned on 32 bit side in AX:DX
- //
- // Error Returns:
- // AX = 0, more than 32 parameters.
- //
- //
- // The function prototype must be declared by the application source code
- // in the following format:
- //
- // DWORD FAR PASCAL CallProc32W( DWORD p1, ... , DWORD lpProcAddress,
- // DWORD fAddressConvert, DWORD cParams);
- //
- // where the value in cParams must match the actual number of optional
- // parameters (p1-pn) given AND the "DWORD p1, ..." must be replaced by
- // the correct number of parameters being passed. For example, passing 3
- // parameter would simply require the removal of the ... and it insertion of
- // "DWORD p2, DWORD p3" instead. The fAddressConvert parameter uses bit 1
- // for the last parameter (p3 in our example), with bit 2 for the next to last,
- // etc.
- //
- // Generic Thunk Routine:
- //
- // CallProcEx32W
- //
- // Transitions to 32 bits and calls specified routine
- //
- // Similar to the CallProc32W function, the CallProcEx32W is an equivalent
- // function that is C calling convention and allows easier and more flexible
- // prototyping. See the prototype below. The fAddressConvert parameter uses
- // bit 1 for the 1st parameter, bit 2 for the 2nd parameter, etc.
- //
- // Both CallProc32W and CallProcEx32W accept a flag OR'd with the parameter
- // count to indicate the calling convention of the function in 32 bits.
- // For example, to call a cdecl function in 32-bits with 1 parameter, it would
- // look like this:
- //
- // dwResult = CallProcEx32W( CPEX_DEST_CDECL | 1, 0, dwfn32, p1 );
- //
- // TODO Variable argument list wrapper!
- (*
- function CallProcEx32W(nParams, fAddressConvert, lpProcAddress: DWORD): DWORD; cdecl;
- {$EXTERNALSYM CallProcEx32W}
- *)
- const
- CPEX_DEST_STDCALL = DWORD($00000000);
- {$EXTERNALSYM CPEX_DEST_STDCALL}
- CPEX_DEST_CDECL = DWORD($80000000);
- {$EXTERNALSYM CPEX_DEST_CDECL}
- implementation
- const
- wow16lib = 'kernel32.dll';
- {$IFDEF DYNAMIC_LINK}
- var
- _GetVDMPointer32W: Pointer;
- function GetVDMPointer32W;
- begin
- GetProcedureAddress(_GetVDMPointer32W, wow16lib, '516');
- asm
- mov esp, ebp
- pop ebp
- jmp [_GetVDMPointer32W]
- end;
- end;
- {$ELSE}
- function GetVDMPointer32W; external wow16lib index 516;
- {$ENDIF DYNAMIC_LINK}
- {$IFDEF DYNAMIC_LINK}
- var
- _LoadLibraryEx32W: Pointer;
- function LoadLibraryEx32W;
- begin
- GetProcedureAddress(_LoadLibraryEx32W, wow16lib, '513');
- asm
- mov esp, ebp
- pop ebp
- jmp [_LoadLibraryEx32W]
- end;
- end;
- {$ELSE}
- function LoadLibraryEx32W; external wow16lib index 513;
- {$ENDIF DYNAMIC_LINK}
- {$IFDEF DYNAMIC_LINK}
- var
- _GetProcAddress32W: Pointer;
- function GetProcAddress32W;
- begin
- GetProcedureAddress(_GetProcAddress32W, wow16lib, '515');
- asm
- mov esp, ebp
- pop ebp
- jmp [_GetProcAddress32W]
- end;
- end;
- {$ELSE}
- function GetProcAddress32W; external wow16lib index 515;
- {$ENDIF DYNAMIC_LINK}
- {$IFDEF DYNAMIC_LINK}
- var
- _FreeLibrary32W: Pointer;
- function FreeLibrary32W;
- begin
- GetProcedureAddress(_FreeLibrary32W, wow16lib, '514');
- asm
- mov esp, ebp
- pop ebp
- jmp [_FreeLibrary32W]
- end;
- end;
- {$ELSE}
- function FreeLibrary32W; external wow16lib index 514;
- {$ENDIF DYNAMIC_LINK}
- //function CallProcEx32W; external wow16lib index 517;
- end.