mirror of
https://github.com/reactos/reactos.git
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Ignore '\r' in HalDisplayString().
svn path=/trunk/; revision=2499
This commit is contained in:
Eric Kohl
parent
25c85c7dfe
commit
fd4d47ccfc
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@ -1,10 +1,28 @@
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/* $Id: display.c,v 1.1 2001/08/21 20:18:26 chorns Exp $
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/*
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* ReactOS kernel
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* Copyright (C) 1998, 1999, 2000, 2001, 2002 ReactOS Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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/* $Id: display.c,v 1.2 2002/01/10 01:01:27 ekohl Exp $
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*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/hal/x86/display.c
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* PURPOSE: Blue screen display
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* PROGRAMMER: Eric Kohl (ekohl@abo.rhein-zeitung.de)
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* PROGRAMMER: Eric Kohl (ekohl@rz-online.de)
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* UPDATE HISTORY:
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* Created 08/10/99
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*/
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@ -50,43 +68,43 @@ static PHAL_RESET_DISPLAY_PARAMETERS HalResetDisplayParameters = NULL;
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static VOID
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HalClearDisplay (VOID)
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{
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WORD *ptr = (WORD*)VideoBuffer;
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ULONG i;
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WORD *ptr = (WORD*)VideoBuffer;
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ULONG i;
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for (i = 0; i < SizeX * SizeY; i++, ptr++)
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*ptr = ((CHAR_ATTRIBUTE << 8) + ' ');
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for (i = 0; i < SizeX * SizeY; i++, ptr++)
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*ptr = ((CHAR_ATTRIBUTE << 8) + ' ');
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CursorX = 0;
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CursorY = 0;
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CursorX = 0;
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CursorY = 0;
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}
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VOID
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HalScrollDisplay (VOID)
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{
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WORD *ptr;
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int i;
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WORD *ptr;
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int i;
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ptr = VideoBuffer + SizeX;
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RtlMoveMemory (VideoBuffer,
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ptr,
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SizeX * (SizeY - 1) * 2);
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ptr = VideoBuffer + SizeX;
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RtlMoveMemory(VideoBuffer,
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ptr,
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SizeX * (SizeY - 1) * 2);
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ptr = VideoBuffer + (SizeX * (SizeY - 1));
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for (i = 0; i < SizeX; i++, ptr++)
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{
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*ptr = (CHAR_ATTRIBUTE << 8) + ' ';
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}
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ptr = VideoBuffer + (SizeX * (SizeY - 1));
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for (i = 0; i < SizeX; i++, ptr++)
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{
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*ptr = (CHAR_ATTRIBUTE << 8) + ' ';
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}
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}
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static VOID
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HalPutCharacter (CHAR Character)
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{
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WORD *ptr;
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WORD *ptr;
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ptr = VideoBuffer + ((CursorY * SizeX) + CursorX);
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*ptr = (CHAR_ATTRIBUTE << 8) + Character;
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ptr = VideoBuffer + ((CursorY * SizeX) + CursorX);
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*ptr = (CHAR_ATTRIBUTE << 8) + Character;
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}
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@ -100,73 +118,70 @@ HalInitializeDisplay (PLOADER_PARAMETER_BLOCK LoaderBlock)
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* InitParameters = Parameters setup by the boot loader
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*/
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{
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if (DisplayInitialized == FALSE)
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if (DisplayInitialized == FALSE)
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{
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ULONG ScanLines;
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ULONG Data;
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ULONG ScanLines;
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ULONG Data;
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VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
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// VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);
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VideoBuffer = (WORD *)(0xd0000000 + 0xb8000);
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// VideoBuffer = HalMapPhysicalMemory (0xb8000, 2);
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/* Set cursor position */
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// CursorX = LoaderBlock->cursorx;
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// CursorY = LoaderBlock->cursory;
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CursorX = 0;
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CursorY = 0;
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/* Set cursor position */
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// CursorX = LoaderBlock->cursorx;
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// CursorY = LoaderBlock->cursory;
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CursorX = 0;
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CursorY = 0;
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/* read screen size from the crtc */
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/* FIXME: screen size should be read from the boot parameters */
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_COLUMNS);
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SizeX = READ_PORT_UCHAR((PUCHAR)CRTC_DATA) + 1;
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_ROWS);
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SizeY = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_OVERFLOW);
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Data = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
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SizeY |= (((Data & 0x02) << 7) | ((Data & 0x40) << 3));
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SizeY++;
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_SCANLINES);
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ScanLines = (READ_PORT_UCHAR((PUCHAR)CRTC_DATA) & 0x1F) + 1;
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SizeY = SizeY / ScanLines;
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/* read screen size from the crtc */
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/* FIXME: screen size should be read from the boot parameters */
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_COLUMNS);
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SizeX = READ_PORT_UCHAR((PUCHAR)CRTC_DATA) + 1;
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_ROWS);
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SizeY = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_OVERFLOW);
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Data = READ_PORT_UCHAR((PUCHAR)CRTC_DATA);
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SizeY |= (((Data & 0x02) << 7) | ((Data & 0x40) << 3));
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SizeY++;
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WRITE_PORT_UCHAR((PUCHAR)CRTC_COMMAND, CRTC_SCANLINES);
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ScanLines = (READ_PORT_UCHAR((PUCHAR)CRTC_DATA) & 0x1F) + 1;
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SizeY = SizeY / ScanLines;
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#ifdef BOCHS_30ROWS
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SizeY=30;
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SizeY=30;
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#endif
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HalClearDisplay ();
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HalClearDisplay();
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DisplayInitialized = TRUE;
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DisplayInitialized = TRUE;
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}
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}
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VOID
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HalResetDisplay (VOID)
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HalResetDisplay(VOID)
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/*
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* FUNCTION: Reset the display
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* ARGUMENTS:
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* None
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*/
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{
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if (HalResetDisplayParameters == NULL)
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return;
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if (HalResetDisplayParameters == NULL)
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return;
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if (HalOwnsDisplay == TRUE)
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return;
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if (HalOwnsDisplay == TRUE)
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return;
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if (HalResetDisplayParameters(SizeX, SizeY) == TRUE)
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if (HalResetDisplayParameters(SizeX, SizeY) == TRUE)
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{
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HalOwnsDisplay = TRUE;
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HalClearDisplay ();
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HalOwnsDisplay = TRUE;
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HalClearDisplay();
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}
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}
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/* PUBLIC FUNCTIONS *********************************************************/
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VOID
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STDCALL
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HalAcquireDisplayOwnership (
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IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters
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)
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VOID STDCALL
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HalAcquireDisplayOwnership(IN PHAL_RESET_DISPLAY_PARAMETERS ResetDisplayParameters)
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/*
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* FUNCTION:
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* ARGUMENTS:
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@ -174,13 +189,13 @@ HalAcquireDisplayOwnership (
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* reset routine.
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*/
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{
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HalOwnsDisplay = FALSE;
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HalResetDisplayParameters = ResetDisplayParameters;
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HalOwnsDisplay = FALSE;
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HalResetDisplayParameters = ResetDisplayParameters;
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}
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VOID STDCALL
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HalDisplayString (IN PCH String)
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HalDisplayString(IN PCH String)
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/*
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* FUNCTION: Switches the screen to HAL console mode (BSOD) if not there
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* already and displays a string
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@ -221,28 +236,28 @@ HalDisplayString (IN PCH String)
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while (*pch != 0)
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{
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if (*pch == '\n')
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{
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{
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CursorY++;
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CursorX = 0;
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}
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else
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{
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}
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else if (*pch != '\r')
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{
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HalPutCharacter (*pch);
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CursorX++;
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if (CursorX >= SizeX)
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{
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{
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CursorY++;
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CursorX = 0;
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}
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}
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}
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}
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if (CursorY >= SizeY)
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{
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{
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HalScrollDisplay ();
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CursorY = SizeY - 1;
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}
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}
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pch++;
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}
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@ -259,35 +274,29 @@ HalDisplayString (IN PCH String)
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}
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VOID
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STDCALL
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HalQueryDisplayParameters (
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PULONG DispSizeX,
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PULONG DispSizeY,
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PULONG CursorPosX,
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PULONG CursorPosY
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)
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VOID STDCALL
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HalQueryDisplayParameters(OUT PULONG DispSizeX,
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OUT PULONG DispSizeY,
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OUT PULONG CursorPosX,
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OUT PULONG CursorPosY)
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{
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if (DispSizeX)
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*DispSizeX = SizeX;
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if (DispSizeY)
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*DispSizeY = SizeY;
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if (CursorPosX)
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*CursorPosX = CursorX;
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if (CursorPosY)
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*CursorPosY = CursorY;
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if (DispSizeX)
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*DispSizeX = SizeX;
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if (DispSizeY)
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*DispSizeY = SizeY;
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if (CursorPosX)
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*CursorPosX = CursorX;
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if (CursorPosY)
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*CursorPosY = CursorY;
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}
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VOID
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STDCALL
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HalSetDisplayParameters (
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ULONG CursorPosX,
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ULONG CursorPosY
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)
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VOID STDCALL
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HalSetDisplayParameters(IN ULONG CursorPosX,
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IN ULONG CursorPosY)
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{
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CursorX = (CursorPosX < SizeX) ? CursorPosX : SizeX - 1;
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CursorY = (CursorPosY < SizeY) ? CursorPosY : SizeY - 1;
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CursorX = (CursorPosX < SizeX) ? CursorPosX : SizeX - 1;
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CursorY = (CursorPosY < SizeY) ? CursorPosY : SizeY - 1;
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}
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/* EOF */
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