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- Rewrite IntVideoPortGetProcAddress() implementation to use a lookup table instead of doing a wrong call to ZwQuerySystemInformation() which always returned STATUS_IMAGE_ALREADY_LOADED (it's supposed to return this). MS's VideoPort seems to do it in a similar way, because it doesn't import neither ZwQSI() nor MmLoadSystemImage().
- VMWare's video driver now calls VideoPortCreateSecondaryDisplay(), without much success though (it's unimplemented). svn path=/trunk/; revision=29323
This commit is contained in:
Aleksey Bragin
parent
434c242504
commit
3d024aa55b
64
reactos/drivers/video/videoprt/funclist.c
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64
reactos/drivers/video/videoprt/funclist.c
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@ -0,0 +1,64 @@
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/*
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* VideoPort driver
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*
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* Copyright (C) 2007 ReactOS Team
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; see the file COPYING.LIB.
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* If not, write to the Free Software Foundation,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Id: videoprt.c 28975 2007-09-09 12:39:11Z fireball $
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*/
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#include "videoprt.h"
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typedef struct _VIDEO_PORT_FUNCTION_TABLE {
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PVOID Address;
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PUCHAR Name;
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} *PVIDEO_PORT_FUNCTION_TABLE, VIDEO_PORT_FUNCTION_TABLE;
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/* GLOBAL VARIABLES ***********************************************************/
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#define VP_EXPORTED_FUNCS 1
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UCHAR FN_VideoPortCreateSecondaryDisplay[] = "VideoPortCreateSecondaryDisplay";
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VIDEO_PORT_FUNCTION_TABLE VideoPortExports[] = {
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{VideoPortCreateSecondaryDisplay, FN_VideoPortCreateSecondaryDisplay}
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};
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PVOID NTAPI
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IntVideoPortGetProcAddress(
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IN PVOID HwDeviceExtension,
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IN PUCHAR FunctionName)
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{
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ULONG i = 0;
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DPRINT("VideoPortGetProcAddress(%s)\n", FunctionName);
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/* Search by name */
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for (i = 0; i < VP_EXPORTED_FUNCS; i++)
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{
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if (!_strnicmp((PCHAR)FunctionName, (PCHAR)VideoPortExports[i].Name,
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strlen((PCHAR)FunctionName)))
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{
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return (PVOID)VideoPortExports[i].Address;
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}
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}
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DPRINT("VideoPortGetProcAddress: Can't resolve symbol %s\n", FunctionName);
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return NULL;
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}
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@ -63,62 +63,6 @@ IntVideoPortImageDirectoryEntryToData(
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return (PVOID)((ULONG_PTR)BaseAddress + Va);
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}
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PVOID NTAPI
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IntVideoPortGetProcAddress(
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IN PVOID HwDeviceExtension,
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IN PUCHAR FunctionName)
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{
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SYSTEM_GDI_DRIVER_INFORMATION GdiDriverInfo;
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PVOID BaseAddress;
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PIMAGE_EXPORT_DIRECTORY ExportDir;
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PUSHORT OrdinalPtr;
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PULONG NamePtr;
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PULONG AddressPtr;
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ULONG i = 0;
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NTSTATUS Status;
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DPRINT("VideoPortGetProcAddress(%s)\n", FunctionName);
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RtlInitUnicodeString(&GdiDriverInfo.DriverName, L"videoprt");
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Status = ZwSetSystemInformation(
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SystemLoadGdiDriverInformation,
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&GdiDriverInfo,
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sizeof(SYSTEM_GDI_DRIVER_INFORMATION));
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if (!NT_SUCCESS(Status))
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{
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DPRINT("Couldn't get our own module handle?\n");
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return NULL;
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}
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BaseAddress = GdiDriverInfo.ImageAddress;
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/* Get the pointer to the export directory */
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ExportDir = (PIMAGE_EXPORT_DIRECTORY)IntVideoPortImageDirectoryEntryToData(
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BaseAddress,
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IMAGE_DIRECTORY_ENTRY_EXPORT);
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/* Search by name */
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AddressPtr = (PULONG)
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((ULONG_PTR)BaseAddress + (ULONG_PTR)ExportDir->AddressOfFunctions);
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OrdinalPtr = (PUSHORT)
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((ULONG_PTR)BaseAddress + (ULONG_PTR)ExportDir->AddressOfNameOrdinals);
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NamePtr = (PULONG)
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((ULONG_PTR)BaseAddress + (ULONG_PTR)ExportDir->AddressOfNames);
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for (i = 0; i < ExportDir->NumberOfNames; i++, NamePtr++, OrdinalPtr++)
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{
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if (!_strnicmp((PCHAR)FunctionName, (PCHAR)((ULONG_PTR)BaseAddress + *NamePtr),
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strlen((PCHAR)FunctionName)))
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{
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return (PVOID)((ULONG_PTR)BaseAddress +
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(ULONG_PTR)AddressPtr[*OrdinalPtr]);
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}
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}
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DPRINT("VideoPortGetProcAddress: Can't resolve symbol %s\n", FunctionName);
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return NULL;
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}
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VOID NTAPI
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IntVideoPortDeferredRoutine(
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IN PKDPC Dpc,
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@ -34,7 +34,7 @@
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#include <ndk/ntndk.h>
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#include <reactos/helper.h>
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#define NDEBUG
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//#define NDEBUG
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#include <debug.h>
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#define TAG_VIDEO_PORT TAG('V', 'I', 'D', 'P')
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@ -222,6 +222,11 @@ IntVideoPortFindAdapter(
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IN PVIDEO_PORT_DRIVER_EXTENSION DriverExtension,
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IN PDEVICE_OBJECT DeviceObject);
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PVOID NTAPI
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IntVideoPortGetProcAddress(
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IN PVOID HwDeviceExtension,
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IN PUCHAR FunctionName);
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/* int10.c */
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VP_STATUS NTAPI
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@ -14,6 +14,7 @@
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<file>dispatch.c</file>
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<file>dma.c</file>
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<file>event.c</file>
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<file>funclist.c</file>
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<file>int10.c</file>
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<file>interrupt.c</file>
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<file>resource.c</file>
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