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[BOOTVID]
- Revert part of r52239: Fix support for \r and do not handle backspace - Simplify it a bit [NTOSKRNL] - Add backspace support to KdpScreenPrint - Do not draw boot text bitmap if InbvDisplayString is called with "" or "." (matches NT behavior) svn path=/trunk/; revision=52409
This commit is contained in:
Rafal Harabien
parent
8500f6aea6
commit
a965ca6b67
3 changed files with 102 additions and 104 deletions
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@ -66,6 +66,7 @@ ULONG lookup[16] =
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ULONG TextColor = 0xF;
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ULONG curr_x = 0;
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ULONG curr_y = 0;
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BOOLEAN CarriageReturn = FALSE;
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ULONG_PTR VgaRegisterBase = 0;
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ULONG_PTR VgaBase = 0;
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@ -279,14 +280,8 @@ VOID
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NTAPI
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VgaScroll(ULONG Scroll)
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{
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ULONG Top;
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ULONG SourceOffset, DestOffset;
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ULONG Offset;
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ULONG i, j;
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/* Set memory positions of the scroll */
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SourceOffset = VgaBase + (ScrollRegion[1] * 80) + (ScrollRegion[0] >> 3);
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DestOffset = SourceOffset + (Scroll * 80);
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ULONG Top, RowSize, i;
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PUCHAR OldPosition, NewPosition;
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/* Clear the 4 planes */
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__outpw(0x3C4, 0xF02);
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@ -296,56 +291,27 @@ VgaScroll(ULONG Scroll)
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/* Set Mode 1 */
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ReadWriteMode(1);
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/* Save top and check if it's above the bottom */
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Top = ScrollRegion[1];
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if (Top > ScrollRegion[3]) return;
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RowSize = (ScrollRegion[2] - ScrollRegion[0] + 1) / 8;
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/* Start loop */
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do
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for(Top = ScrollRegion[1]; Top <= ScrollRegion[3]; ++Top)
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{
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/* Set number of bytes to loop and start offset */
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Offset = ScrollRegion[0] >> 3;
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j = SourceOffset;
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/* Check if this is part of the scroll region */
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if (Offset <= (ScrollRegion[2] >> 3))
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{
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/* Update position */
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i = DestOffset - SourceOffset;
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/* Loop the X axis */
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do
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{
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/* Write value in the new position so that we can do the scroll */
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WRITE_REGISTER_UCHAR(UlongToPtr(j),
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READ_REGISTER_UCHAR(UlongToPtr(j + i)));
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/* Move to the next memory location to write to */
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j++;
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/* Move to the next byte in the region */
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Offset++;
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/* Make sure we don't go past the scroll region */
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} while (Offset <= (ScrollRegion[2] >> 3));
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}
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/* Move to the next line */
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SourceOffset += 80;
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DestOffset += 80;
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/* Increase top */
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Top++;
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/* Make sure we don't go past the scroll region */
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} while (Top <= ScrollRegion[3]);
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/* Calculate the position in memory for the row */
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OldPosition = (PUCHAR)VgaBase + (Top + Scroll) * 80 + ScrollRegion[0] / 8;
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NewPosition = (PUCHAR)VgaBase + Top * 80 + ScrollRegion[0] / 8;
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/* Scroll the row */
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for(i = 0; i < RowSize; ++i)
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WRITE_REGISTER_UCHAR(NewPosition + i, READ_REGISTER_UCHAR(OldPosition + i));
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}
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}
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VOID
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NTAPI
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PreserveRow(IN ULONG CurrentTop,
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IN ULONG TopDelta)
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IN ULONG TopDelta,
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IN BOOLEAN Direction)
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{
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PUCHAR Position1, Position2;
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ULONG Count;
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@ -359,9 +325,19 @@ PreserveRow(IN ULONG CurrentTop,
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/* Set Mode 1 */
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ReadWriteMode(1);
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/* Calculate the position in memory for the row */
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Position1 = (PUCHAR)VgaBase + 0x9600;
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Position2 = (PUCHAR)VgaBase + CurrentTop * 80;
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/* Check which way we're preserving */
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if (Direction)
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{
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/* Calculate the position in memory for the row */
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Position1 = (PUCHAR)VgaBase + CurrentTop * 80;
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Position2 = (PUCHAR)VgaBase + 0x9600;
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}
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else
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{
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/* Calculate the position in memory for the row */
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Position1 = (PUCHAR)VgaBase + 0x9600;
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Position2 = (PUCHAR)VgaBase + CurrentTop * 80;
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}
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/* Set the count and make sure it's above 0 */
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Count = TopDelta * 80;
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@ -380,33 +356,6 @@ PreserveRow(IN ULONG CurrentTop,
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}
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}
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VOID
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NTAPI
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CleanCharacter(IN ULONG Left,
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IN ULONG Top,
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IN ULONG TopDelta)
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{
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PUCHAR Position1, Position2;
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ULONG i;
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/* Clear the 4 planes */
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__outpw(0x3C4, 0xF02);
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/* Set the bitmask to 0xFF for all 4 planes */
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__outpw(0x3CE, 0xFF08);
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/* Set Mode 1 */
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ReadWriteMode(1);
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/* Calculate the position in memory for the character */
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Position1 = (PUCHAR)VgaBase + 0x9600 + Left / 8;
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Position2 = (PUCHAR)VgaBase + Top * 80 + Left / 8;
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/* Copy data from preserved row */
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for(i = 0; i < TopDelta; ++i)
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WRITE_REGISTER_UCHAR(Position2 + i * 80, READ_REGISTER_UCHAR(Position1));
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}
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VOID
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NTAPI
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BitBlt(IN ULONG Left,
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@ -772,35 +721,34 @@ VidDisplayString(PUCHAR String)
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}
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else
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{
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/* Preserve the current row */
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PreserveRow(curr_y, TopDelta);
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/* Preserve row */
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PreserveRow(curr_y, TopDelta, FALSE);
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}
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/* Update current X */
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curr_x = ScrollRegion[0];
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/* Do not clear line if "\r\n" is given */
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CarriageReturn = FALSE;
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}
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else if (*String == '\r')
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{
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/* Update current X */
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curr_x = ScrollRegion[0];
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}
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else if (*String == '\b')
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{
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/* Update current X */
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if (curr_x > ScrollRegion[0])
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curr_x -= 8;
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else
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{
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/* We are at line begin - move to previous row */
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curr_x = ScrollRegion[0];
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curr_y -= TopDelta;
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}
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/* Clean current character */
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CleanCharacter(curr_x, curr_y, TopDelta);
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/* Check if we're being followed by a new line */
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CarriageReturn = TRUE;
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}
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else
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{
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/* check if we had a '\r' last time */
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if (CarriageReturn)
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{
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/* We did, clear the current row */
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PreserveRow(curr_y, TopDelta, TRUE);
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CarriageReturn = FALSE;
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}
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/* Display this character */
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DisplayCharacter(*String, curr_x, curr_y, TextColor, 16);
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curr_x += 8;
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@ -819,7 +767,7 @@ VidDisplayString(PUCHAR String)
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else
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{
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/* Preserve the current row */
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PreserveRow(curr_y, TopDelta);
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PreserveRow(curr_y, TopDelta, FALSE);
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}
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/* Update X */
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@ -717,11 +717,15 @@ NTAPI
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INIT_FUNCTION
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DisplayFilter(PCHAR *String)
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{
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/* Remove the filter */
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InbvInstallDisplayStringFilter(NULL);
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/* Draw text screen */
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DisplayBootBitmap(TRUE);
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/* Ignore empty and "." strings */
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if(*String && strcmp(String, ".") != 0)
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{
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/* Remove the filter */
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InbvInstallDisplayStringFilter(NULL);
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/* Draw text screen */
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DisplayBootBitmap(TRUE);
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}
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}
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VOID
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@ -29,6 +29,10 @@ KD_PORT_INFORMATION SerialPortInfo = { DEFAULT_DEBUG_PORT, DEFAULT_DEBUG_BAUD_RA
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/* Current Port in use. FIXME: Do we support more then one? */
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ULONG KdpPort;
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#define KdpScreenLineLenght 80
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CHAR KdpScreenLineBuffer[KdpScreenLineLenght + 1] = "";
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ULONG KdpScreenLineBufferPos = 0, KdpScreenLineLength = 0;
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/* DEBUG LOG FUNCTIONS *******************************************************/
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VOID
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@ -316,8 +320,50 @@ NTAPI
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KdpScreenPrint(LPSTR Message,
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ULONG Length)
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{
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/* Call HAL */
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HalDisplayString(Message);
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PCHAR pch = (PCHAR) Message;
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while (*pch)
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{
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if(*pch == '\b')
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{
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/* HalDisplayString does not support '\b'. Workaround it and use '\r' */
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if(KdpScreenLineLength > 0)
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{
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/* Remove last character from buffer */
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KdpScreenLineBuffer[--KdpScreenLineLength] = '\0';
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KdpScreenLineBufferPos = KdpScreenLineLength;
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/* Clear row and print line again */
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HalDisplayString("\r");
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HalDisplayString(KdpScreenLineBuffer);
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}
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}
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else
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{
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KdpScreenLineBuffer[KdpScreenLineLength++] = *pch;
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KdpScreenLineBuffer[KdpScreenLineLength] = '\0';
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}
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if(*pch == '\n' || KdpScreenLineLength == KdpScreenLineLenght)
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{
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/* Print buffered characters */
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if(KdpScreenLineBufferPos != KdpScreenLineLength)
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HalDisplayString(KdpScreenLineBuffer + KdpScreenLineBufferPos);
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/* Clear line buffer */
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KdpScreenLineBuffer[0] = '\0';
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KdpScreenLineLength = KdpScreenLineBufferPos = 0;
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}
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++pch;
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}
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/* Print buffered characters */
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if(KdpScreenLineBufferPos != KdpScreenLineLength)
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{
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HalDisplayString(KdpScreenLineBuffer + KdpScreenLineBufferPos);
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KdpScreenLineBufferPos = KdpScreenLineLength;
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}
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}
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VOID
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