[rharabien] 52409: [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...
21 Jun
2011
21 Jun
'11
7:47 p.m.
Author: rharabien
Date: Tue Jun 21 19:47:13 2011
New Revision: 52409
URL: http://svn.reactos.org/svn/reactos?rev=52409&view=rev
Log:
[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)
Modified:
trunk/reactos/drivers/base/bootvid/i386/vga.c
trunk/reactos/ntoskrnl/inbv/inbv.c
trunk/reactos/ntoskrnl/kd/kdio.c
Modified: trunk/reactos/drivers/base/bootvid/i386/vga.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/base/bootvid/i386/…
==============================================================================
--- trunk/reactos/drivers/base/bootvid/i386/vga.c [iso-8859-1] (original)
+++ trunk/reactos/drivers/base/bootvid/i386/vga.c [iso-8859-1] Tue Jun 21 19:47:13 2011
@@ -66,6 +66,7 @@
ULONG TextColor = 0xF;
ULONG curr_x = 0;
ULONG curr_y = 0;
+BOOLEAN CarriageReturn = FALSE;
ULONG_PTR VgaRegisterBase = 0;
ULONG_PTR VgaBase = 0;
@@ -279,14 +280,8 @@
NTAPI
VgaScroll(ULONG Scroll)
{
- ULONG Top;
- ULONG SourceOffset, DestOffset;
- ULONG Offset;
- ULONG i, j;
-
- /* Set memory positions of the scroll */
- SourceOffset = VgaBase + (ScrollRegion[1] * 80) + (ScrollRegion[0] >> 3);
- DestOffset = SourceOffset + (Scroll * 80);
+ ULONG Top, RowSize, i;
+ PUCHAR OldPosition, NewPosition;
/* Clear the 4 planes */
__outpw(0x3C4, 0xF02);
@@ -296,56 +291,27 @@
/* Set Mode 1 */
ReadWriteMode(1);
-
- /* Save top and check if it's above the bottom */
- Top = ScrollRegion[1];
- if (Top > ScrollRegion[3]) return;
+
+ RowSize = (ScrollRegion[2] - ScrollRegion[0] + 1) / 8;
/* Start loop */
- do
- {
- /* Set number of bytes to loop and start offset */
- Offset = ScrollRegion[0] >> 3;
- j = SourceOffset;
-
- /* Check if this is part of the scroll region */
- if (Offset <= (ScrollRegion[2] >> 3))
- {
- /* Update position */
- i = DestOffset - SourceOffset;
-
- /* Loop the X axis */
- do
- {
- /* Write value in the new position so that we can do the scroll */
- WRITE_REGISTER_UCHAR(UlongToPtr(j),
- READ_REGISTER_UCHAR(UlongToPtr(j + i)));
-
- /* Move to the next memory location to write to */
- j++;
-
- /* Move to the next byte in the region */
- Offset++;
-
- /* Make sure we don't go past the scroll region */
- } while (Offset <= (ScrollRegion[2] >> 3));
- }
-
- /* Move to the next line */
- SourceOffset += 80;
- DestOffset += 80;
-
- /* Increase top */
- Top++;
-
- /* Make sure we don't go past the scroll region */
- } while (Top <= ScrollRegion[3]);
+ for(Top = ScrollRegion[1]; Top <= ScrollRegion[3]; ++Top)
+ {
+ /* Calculate the position in memory for the row */
+ OldPosition = (PUCHAR)VgaBase + (Top + Scroll) * 80 + ScrollRegion[0] / 8;
+ NewPosition = (PUCHAR)VgaBase + Top * 80 + ScrollRegion[0] / 8;
+
+ /* Scroll the row */
+ for(i = 0; i < RowSize; ++i)
+ WRITE_REGISTER_UCHAR(NewPosition + i, READ_REGISTER_UCHAR(OldPosition + i));
+ }
}
VOID
NTAPI
PreserveRow(IN ULONG CurrentTop,
- IN ULONG TopDelta)
+ IN ULONG TopDelta,
+ IN BOOLEAN Direction)
{
PUCHAR Position1, Position2;
ULONG Count;
@@ -359,9 +325,19 @@
/* Set Mode 1 */
ReadWriteMode(1);
- /* Calculate the position in memory for the row */
- Position1 = (PUCHAR)VgaBase + 0x9600;
- Position2 = (PUCHAR)VgaBase + CurrentTop * 80;
+ /* Check which way we're preserving */
+ if (Direction)
+ {
+ /* Calculate the position in memory for the row */
+ Position1 = (PUCHAR)VgaBase + CurrentTop * 80;
+ Position2 = (PUCHAR)VgaBase + 0x9600;
+ }
+ else
+ {
+ /* Calculate the position in memory for the row */
+ Position1 = (PUCHAR)VgaBase + 0x9600;
+ Position2 = (PUCHAR)VgaBase + CurrentTop * 80;
+ }
/* Set the count and make sure it's above 0 */
Count = TopDelta * 80;
@@ -378,33 +354,6 @@
Position1++;
} while (--Count);
}
-}
-
-VOID
-NTAPI
-CleanCharacter(IN ULONG Left,
- IN ULONG Top,
- IN ULONG TopDelta)
-{
- PUCHAR Position1, Position2;
- ULONG i;
-
- /* Clear the 4 planes */
- __outpw(0x3C4, 0xF02);
-
- /* Set the bitmask to 0xFF for all 4 planes */
- __outpw(0x3CE, 0xFF08);
-
- /* Set Mode 1 */
- ReadWriteMode(1);
-
- /* Calculate the position in memory for the character */
- Position1 = (PUCHAR)VgaBase + 0x9600 + Left / 8;
- Position2 = (PUCHAR)VgaBase + Top * 80 + Left / 8;
-
- /* Copy data from preserved row */
- for(i = 0; i < TopDelta; ++i)
- WRITE_REGISTER_UCHAR(Position2 + i * 80, READ_REGISTER_UCHAR(Position1));
}
VOID
@@ -772,35 +721,34 @@
}
else
{
- /* Preserve the current row */
- PreserveRow(curr_y, TopDelta);
+ /* Preserve row */
+ PreserveRow(curr_y, TopDelta, FALSE);
}
/* Update current X */
curr_x = ScrollRegion[0];
+
+ /* Do not clear line if "\r\n" is given */
+ CarriageReturn = FALSE;
}
else if (*String == '\r')
{
/* Update current X */
curr_x = ScrollRegion[0];
- }
- else if (*String == '\b')
- {
- /* Update current X */
- if (curr_x > ScrollRegion[0])
- curr_x -= 8;
- else
- {
- /* We are at line begin - move to previous row */
- curr_x = ScrollRegion[0];
- curr_y -= TopDelta;
+
+ /* Check if we're being followed by a new line */
+ CarriageReturn = TRUE;
+ }
+ else
+ {
+ /* check if we had a '\r' last time */
+ if (CarriageReturn)
+ {
+ /* We did, clear the current row */
+ PreserveRow(curr_y, TopDelta, TRUE);
+ CarriageReturn = FALSE;
}
-
- /* Clean current character */
- CleanCharacter(curr_x, curr_y, TopDelta);
- }
- else
- {
+
/* Display this character */
DisplayCharacter(*String, curr_x, curr_y, TextColor, 16);
curr_x += 8;
@@ -819,7 +767,7 @@
else
{
/* Preserve the current row */
- PreserveRow(curr_y, TopDelta);
+ PreserveRow(curr_y, TopDelta, FALSE);
}
/* Update X */
Modified: trunk/reactos/ntoskrnl/inbv/inbv.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/inbv/inbv.c?rev=5…
==============================================================================
--- trunk/reactos/ntoskrnl/inbv/inbv.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/inbv/inbv.c [iso-8859-1] Tue Jun 21 19:47:13 2011
@@ -717,11 +717,15 @@
INIT_FUNCTION
DisplayFilter(PCHAR *String)
{
- /* Remove the filter */
- InbvInstallDisplayStringFilter(NULL);
-
- /* Draw text screen */
- DisplayBootBitmap(TRUE);
+ /* Ignore empty and "." strings */
+ if(*String && strcmp(String, ".") != 0)
+ {
+ /* Remove the filter */
+ InbvInstallDisplayStringFilter(NULL);
+
+ /* Draw text screen */
+ DisplayBootBitmap(TRUE);
+ }
}
VOID
Modified: trunk/reactos/ntoskrnl/kd/kdio.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/kd/kdio.c?rev=524…
==============================================================================
--- trunk/reactos/ntoskrnl/kd/kdio.c [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/kd/kdio.c [iso-8859-1] Tue Jun 21 19:47:13 2011
@@ -28,6 +28,10 @@
/* Current Port in use. FIXME: Do we support more then one? */
ULONG KdpPort;
+
+#define KdpScreenLineLenght 80
+CHAR KdpScreenLineBuffer[KdpScreenLineLenght + 1] = "";
+ULONG KdpScreenLineBufferPos = 0, KdpScreenLineLength = 0;
/* DEBUG LOG FUNCTIONS *******************************************************/
@@ -316,8 +320,50 @@
KdpScreenPrint(LPSTR Message,
ULONG Length)
{
- /* Call HAL */
- HalDisplayString(Message);
+ PCHAR pch = (PCHAR) Message;
+
+ while (*pch)
+ {
+ if(*pch == '\b')
+ {
+ /* HalDisplayString does not support '\b'. Workaround it and use
'\r' */
+ if(KdpScreenLineLength > 0)
+ {
+ /* Remove last character from buffer */
+ KdpScreenLineBuffer[--KdpScreenLineLength] = '\0';
+ KdpScreenLineBufferPos = KdpScreenLineLength;
+
+ /* Clear row and print line again */
+ HalDisplayString("\r");
+ HalDisplayString(KdpScreenLineBuffer);
+ }
+ }
+ else
+ {
+ KdpScreenLineBuffer[KdpScreenLineLength++] = *pch;
+ KdpScreenLineBuffer[KdpScreenLineLength] = '\0';
+ }
+
+ if(*pch == '\n' || KdpScreenLineLength == KdpScreenLineLenght)
+ {
+ /* Print buffered characters */
+ if(KdpScreenLineBufferPos != KdpScreenLineLength)
+ HalDisplayString(KdpScreenLineBuffer + KdpScreenLineBufferPos);
+
+ /* Clear line buffer */
+ KdpScreenLineBuffer[0] = '\0';
+ KdpScreenLineLength = KdpScreenLineBufferPos = 0;
+ }
+
+ ++pch;
+ }
+
+ /* Print buffered characters */
+ if(KdpScreenLineBufferPos != KdpScreenLineLength)
+ {
+ HalDisplayString(KdpScreenLineBuffer + KdpScreenLineBufferPos);
+ KdpScreenLineBufferPos = KdpScreenLineLength;
+ }
}
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