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audk/MdeModulePkg/Universal/EbcDxe/EbcDebugger/EdbSupportUI.c

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/** @file
Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "Edb.h"
/**
Set the current coordinates of the cursor position.
@param ConOut Point to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.
@param Column The position to set the cursor to.
@param Row The position to set the cursor to.
@param LineLength Length of a line.
@param TotalRow Total row of a screen.
@param Str Point to the string.
@param StrPos The position of the string.
@param Len The length of the string.
**/
VOID
EFIAPI
SetCursorPosition (
IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut,
IN UINTN Column,
IN INTN Row,
IN UINTN LineLength,
IN UINTN TotalRow,
IN CHAR16 *Str,
IN UINTN StrPos,
IN UINTN Len
);
/**
Function waits for a given event to fire, or for an optional timeout to expire.
@param Event - The event to wait for
@param Timeout - An optional timeout value in 100 ns units.
@retval EFI_SUCCESS - Event fired before Timeout expired.
@retval EFI_TIME_OUT - Timout expired before Event fired..
**/
EFI_STATUS
EFIAPI
WaitForSingleEvent (
IN EFI_EVENT Event,
IN UINT64 Timeout OPTIONAL
)
{
EFI_STATUS Status;
UINTN Index;
EFI_EVENT TimerEvent;
EFI_EVENT WaitList[2];
if (Timeout != 0) {
//
// Create a timer event
//
Status = gBS->CreateEvent (EVT_TIMER, 0, NULL, NULL, &TimerEvent);
if (!EFI_ERROR (Status)) {
//
// Set the timer event
//
gBS->SetTimer (
TimerEvent,
TimerRelative,
Timeout
);
//
// Wait for the original event or the timer
//
WaitList[0] = Event;
WaitList[1] = TimerEvent;
Status = gBS->WaitForEvent (2, WaitList, &Index);
gBS->CloseEvent (TimerEvent);
//
// If the timer expired, change the return to timed out
//
if (!EFI_ERROR (Status) && Index == 1) {
Status = EFI_TIMEOUT;
}
}
} else {
//
// No timeout... just wait on the event
//
Status = gBS->WaitForEvent (1, &Event, &Index);
ASSERT (!EFI_ERROR (Status));
ASSERT (Index == 0);
}
return Status;
}
/**
Move the cursor position one character backward.
@param LineLength Length of a line. Get it by calling QueryMode
@param Column Current column of the cursor position
@param Row Current row of the cursor position
**/
VOID
EFIAPI
ConMoveCursorBackward (
IN UINTN LineLength,
IN OUT UINTN *Column,
IN OUT UINTN *Row
)
{
ASSERT (Column != NULL);
ASSERT (Row != NULL);
//
// If current column is 0, move to the last column of the previous line,
// otherwise, just decrement column.
//
if (*Column == 0) {
(*Column) = LineLength - 1;
//
// if (*Row > 0) {
//
(*Row)--;
//
// }
//
} else {
(*Column)--;
}
}
/**
Move the cursor position one character backward.
@param LineLength Length of a line. Get it by calling QueryMode
@param TotalRow Total row of a screen, get by calling QueryMode
@param Column Current column of the cursor position
@param Row Current row of the cursor position
**/
VOID
EFIAPI
ConMoveCursorForward (
IN UINTN LineLength,
IN UINTN TotalRow,
IN OUT UINTN *Column,
IN OUT UINTN *Row
)
{
ASSERT (Column != NULL);
ASSERT (Row != NULL);
//
// If current column is at line end, move to the first column of the nest
// line, otherwise, just increment column.
//
(*Column)++;
if (*Column >= LineLength) {
(*Column) = 0;
if ((*Row) < TotalRow - 1) {
(*Row)++;
}
}
}
CHAR16 mBackupSpace[EFI_DEBUG_INPUS_BUFFER_SIZE];
CHAR16 mInputBufferHistory[EFI_DEBUG_INPUS_BUFFER_SIZE];
/**
Get user input.
@param Prompt The prompt string.
@param InStr Point to the input string.
@param StrLength The max length of string user can input.
**/
VOID
EFIAPI
Input (
IN CHAR16 *Prompt OPTIONAL,
OUT CHAR16 *InStr,
IN UINTN StrLength
)
{
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut;
EFI_SIMPLE_TEXT_INPUT_PROTOCOL *ConIn;
BOOLEAN Done;
UINTN Column;
UINTN Row;
UINTN StartColumn;
UINTN Update;
UINTN Delete;
UINTN Len;
UINTN StrPos;
UINTN Index;
UINTN LineLength;
UINTN TotalRow;
UINTN SkipLength;
UINTN OutputLength;
UINTN TailRow;
UINTN TailColumn;
EFI_INPUT_KEY Key;
BOOLEAN InsertMode;
BOOLEAN NeedAdjust;
UINTN SubIndex;
CHAR16 *CommandStr;
ConOut = gST->ConOut;
ConIn = gST->ConIn;
ASSERT (ConOut != NULL);
ASSERT (ConIn != NULL);
ASSERT (InStr != NULL);
if (Prompt != NULL) {
ConOut->OutputString (ConOut, Prompt);
}
//
// Read a line from the console
//
Len = 0;
StrPos = 0;
OutputLength = 0;
Update = 0;
Delete = 0;
InsertMode = TRUE;
NeedAdjust = FALSE;
//
// If buffer is not large enough to hold a CHAR16, do nothing.
//
if (StrLength < 1) {
return ;
}
//
// Get the screen setting and the current cursor location
//
StartColumn = ConOut->Mode->CursorColumn;
Column = StartColumn;
Row = ConOut->Mode->CursorRow;
ConOut->QueryMode (ConOut, ConOut->Mode->Mode, &LineLength, &TotalRow);
if (LineLength == 0) {
return ;
}
SetMem (InStr, StrLength * sizeof (CHAR16), 0);
Done = FALSE;
do {
//
// Read a key
//
WaitForSingleEvent (ConIn->WaitForKey, 0);
ConIn->ReadKeyStroke (ConIn, &Key);
switch (Key.UnicodeChar) {
case CHAR_CARRIAGE_RETURN:
//
// All done, print a newline at the end of the string
//
TailRow = Row + (Len - StrPos + Column) / LineLength;
TailColumn = (Len - StrPos + Column) % LineLength;
Done = TRUE;
break;
case CHAR_BACKSPACE:
if (StrPos != 0) {
//
// If not move back beyond string beginning, move all characters behind
// the current position one character forward
//
StrPos -= 1;
Update = StrPos;
Delete = 1;
CopyMem (InStr + StrPos, InStr + StrPos + 1, sizeof (CHAR16) * (Len - StrPos));
//
// Adjust the current column and row
//
ConMoveCursorBackward (LineLength, &Column, &Row);
NeedAdjust = TRUE;
}
break;
default:
if (Key.UnicodeChar >= ' ') {
//
// If we are at the buffer's end, drop the key
//
if (Len == StrLength - 1 && (InsertMode || StrPos == Len)) {
break;
}
//
// If in insert mode, move all characters behind the current position
// one character backward to make space for this character. Then store
// the character.
//
if (InsertMode) {
for (Index = Len; Index > StrPos; Index -= 1) {
InStr[Index] = InStr[Index - 1];
}
}
InStr[StrPos] = Key.UnicodeChar;
Update = StrPos;
StrPos += 1;
OutputLength = 1;
}
break;
case 0:
switch (Key.ScanCode) {
case SCAN_DELETE:
//
// Move characters behind current position one character forward
//
if (Len != 0) {
Update = StrPos;
Delete = 1;
CopyMem (InStr + StrPos, InStr + StrPos + 1, sizeof (CHAR16) * (Len - StrPos));
NeedAdjust = TRUE;
}
break;
case SCAN_LEFT:
//
// Adjust current cursor position
//
if (StrPos != 0) {
StrPos -= 1;
ConMoveCursorBackward (LineLength, &Column, &Row);
}
break;
case SCAN_RIGHT:
//
// Adjust current cursor position
//
if (StrPos < Len) {
StrPos += 1;
ConMoveCursorForward (LineLength, TotalRow, &Column, &Row);
}
break;
case SCAN_HOME:
//
// Move current cursor position to the beginning of the command line
//
Row -= (StrPos + StartColumn) / LineLength;
Column = StartColumn;
StrPos = 0;
break;
case SCAN_END:
//
// Move current cursor position to the end of the command line
//
TailRow = Row + (Len - StrPos + Column) / LineLength;
TailColumn = (Len - StrPos + Column) % LineLength;
Row = TailRow;
Column = TailColumn;
StrPos = Len;
break;
case SCAN_ESC:
//
// Prepare to clear the current command line
//
InStr[0] = 0;
Update = 0;
Delete = Len;
Row -= (StrPos + StartColumn) / LineLength;
Column = StartColumn;
OutputLength = 0;
NeedAdjust = TRUE;
break;
case SCAN_INSERT:
//
// Toggle the SEnvInsertMode flag
//
InsertMode = (BOOLEAN)!InsertMode;
break;
case SCAN_UP:
case SCAN_DOWN:
//
// show history
//
CopyMem (InStr, mInputBufferHistory, StrLength * sizeof(CHAR16));
StrPos = StrLen (mInputBufferHistory);
Update = 0;
Delete = 0;
OutputLength = 0;
TailRow = Row + (StrPos + StartColumn) / LineLength;
TailColumn = (StrPos + StartColumn) % LineLength;
Row = TailRow;
Column = TailColumn;
NeedAdjust = FALSE;
ConOut->SetCursorPosition (ConOut, StartColumn, Row);
for (SubIndex = 0; SubIndex < EFI_DEBUG_INPUS_BUFFER_SIZE - (StartColumn - EFI_DEBUG_PROMPT_COLUMN); SubIndex++) {
mBackupSpace[SubIndex] = L' ';
}
EDBPrint (mBackupSpace);
SetMem (mBackupSpace, (EFI_DEBUG_INPUS_BUFFER_SIZE - (StartColumn - EFI_DEBUG_PROMPT_COLUMN)) * sizeof(CHAR16), 0);
ConOut->SetCursorPosition (ConOut, StartColumn, Row);
Len = StrPos;
break;
case SCAN_F1:
case SCAN_F2:
case SCAN_F3:
case SCAN_F4:
case SCAN_F5:
case SCAN_F6:
case SCAN_F7:
case SCAN_F8:
case SCAN_F9:
case SCAN_F10:
case SCAN_F11:
case SCAN_F12:
CommandStr = GetCommandNameByKey (Key);
if (CommandStr != NULL) {
StrnCpyS (InStr, StrLength, CommandStr, StrLength - 1);
return ;
}
break;
}
}
if (Done) {
break;
}
//
// If we need to update the output do so now
//
if (Update != -1) {
if (NeedAdjust) {
ConOut->SetCursorPosition (ConOut, Column, Row);
for (SubIndex = 0; SubIndex < EFI_DEBUG_INPUS_BUFFER_SIZE - (Column - EFI_DEBUG_PROMPT_COLUMN); SubIndex++) {
mBackupSpace[SubIndex] = L' ';
}
EDBPrint (mBackupSpace);
SetMem (mBackupSpace, (EFI_DEBUG_INPUS_BUFFER_SIZE - (Column - EFI_DEBUG_PROMPT_COLUMN)) * sizeof(CHAR16), 0);
ConOut->SetCursorPosition (ConOut, Column, Row);
NeedAdjust = FALSE;
}
EDBPrint (InStr + Update);
Len = StrLen (InStr);
if (Delete != 0) {
SetMem (InStr + Len, Delete * sizeof (CHAR16), 0x00);
}
if (StrPos > Len) {
StrPos = Len;
}
Update = (UINTN) -1;
//
// After using print to reflect newly updates, if we're not using
// BACKSPACE and DELETE, we need to move the cursor position forward,
// so adjust row and column here.
//
if (Key.UnicodeChar != CHAR_BACKSPACE && !(Key.UnicodeChar == 0 && Key.ScanCode == SCAN_DELETE)) {
//
// Calulate row and column of the tail of current string
//
TailRow = Row + (Len - StrPos + Column + OutputLength) / LineLength;
TailColumn = (Len - StrPos + Column + OutputLength) % LineLength;
//
// If the tail of string reaches screen end, screen rolls up, so if
// Row does not equal TailRow, Row should be decremented
//
// (if we are recalling commands using UPPER and DOWN key, and if the
// old command is too long to fit the screen, TailColumn must be 79.
//
if (TailColumn == 0 && TailRow >= TotalRow && (UINTN) Row != TailRow) {
Row--;
}
//
// Calculate the cursor position after current operation. If cursor
// reaches line end, update both row and column, otherwise, only
// column will be changed.
//
if (Column + OutputLength >= LineLength) {
SkipLength = OutputLength - (LineLength - Column);
Row += SkipLength / LineLength + 1;
if ((UINTN) Row > TotalRow - 1) {
Row = TotalRow - 1;
}
Column = SkipLength % LineLength;
} else {
Column += OutputLength;
}
}
Delete = 0;
}
//
// Set the cursor position for this key
//
SetCursorPosition (ConOut, Column, Row, LineLength, TotalRow, InStr, StrPos, Len);
} while (!Done);
CopyMem (mInputBufferHistory, InStr, StrLength * sizeof(CHAR16));
//
// Return the data to the caller
//
return ;
}
/**
Set the current coordinates of the cursor position.
@param ConOut Point to EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL.
@param Column The position to set the cursor to.
@param Row The position to set the cursor to.
@param LineLength Length of a line.
@param TotalRow Total row of a screen.
@param Str Point to the string.
@param StrPos The position of the string.
@param Len The length of the string.
**/
VOID
EFIAPI
SetCursorPosition (
IN EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *ConOut,
IN UINTN Column,
IN INTN Row,
IN UINTN LineLength,
IN UINTN TotalRow,
IN CHAR16 *Str,
IN UINTN StrPos,
IN UINTN Len
)
{
CHAR16 Backup;
ASSERT (ConOut != NULL);
ASSERT (Str != NULL);
Backup = 0;
if (Row >= 0) {
ConOut->SetCursorPosition (ConOut, Column, Row);
return ;
}
if (Len - StrPos > Column * Row) {
Backup = *(Str + StrPos + Column * Row);
*(Str + StrPos + Column * Row) = 0;
}
EDBPrint (L"%s", Str + StrPos);
if (Len - StrPos > Column * Row) {
*(Str + StrPos + Column * Row) = Backup;
}
ConOut->SetCursorPosition (ConOut, 0, 0);
}
/**
SetPageBreak.
**/
BOOLEAN
EFIAPI
SetPageBreak (
VOID
)
{
EFI_INPUT_KEY Key;
CHAR16 Str[3];
BOOLEAN OmitPrint;
//
// Check
//
if (!mDebuggerPrivate.EnablePageBreak) {
return FALSE;
}
gST->ConOut->OutputString (gST->ConOut, L"Press ENTER to continue, 'q' to exit:");
OmitPrint = FALSE;
//
// Wait for user input
//
Str[0] = ' ';
Str[1] = 0;
Str[2] = 0;
for (;;) {
WaitForSingleEvent (gST->ConIn->WaitForKey, 0);
gST->ConIn->ReadKeyStroke (gST->ConIn, &Key);
//
// handle control keys
//
if (Key.UnicodeChar == CHAR_NULL) {
if (Key.ScanCode == SCAN_ESC) {
gST->ConOut->OutputString (gST->ConOut, L"\r\n");
OmitPrint = TRUE;
break;
}
continue;
}
if (Key.UnicodeChar == CHAR_CARRIAGE_RETURN) {
gST->ConOut->OutputString (gST->ConOut, L"\r\n");
break;
}
//
// Echo input
//
Str[1] = Key.UnicodeChar;
if (Str[1] == CHAR_BACKSPACE) {
continue;
}
gST->ConOut->OutputString (gST->ConOut, Str);
if ((Str[1] == L'q') || (Str[1] == L'Q')) {
OmitPrint = TRUE;
} else {
OmitPrint = FALSE;
}
Str[0] = CHAR_BACKSPACE;
}
return OmitPrint;
}
/**
Print a Unicode string to the output device.
@param Format A Null-terminated Unicode format string.
@param ... The variable argument list that contains pointers to Null-
terminated Unicode strings to be printed
**/
UINTN
EFIAPI
EDBPrint (
IN CONST CHAR16 *Format,
...
)
{
UINTN Return;
VA_LIST Marker;
CHAR16 Buffer[EFI_DEBUG_MAX_PRINT_BUFFER];
VA_START (Marker, Format);
Return = UnicodeVSPrint (Buffer, sizeof (Buffer), Format, Marker);
VA_END (Marker);
if (gST->ConOut != NULL) {
//
// To be extra safe make sure ConOut has been initialized
//
gST->ConOut->OutputString (gST->ConOut, Buffer);
}
return Return;
}
/**
Print a Unicode string to the output buffer.
@param Buffer A pointer to the output buffer for the produced Null-terminated
Unicode string.
@param BufferSize The size, in bytes, of the output buffer specified by StartOfBuffer.
@param Format A Null-terminated Unicode format string.
@param ... The variable argument list that contains pointers to Null-
terminated Unicode strings to be printed
**/
UINTN
EFIAPI
EDBSPrint (
OUT CHAR16 *Buffer,
IN INTN BufferSize,
IN CONST CHAR16 *Format,
...
)
{
UINTN Return;
VA_LIST Marker;
ASSERT (BufferSize > 0);
VA_START (Marker, Format);
Return = UnicodeVSPrint (Buffer, (UINTN)BufferSize, Format, Marker);
VA_END (Marker);
return Return;
}
/**
Print a Unicode string to the output buffer with specified offset..
@param Buffer A pointer to the output buffer for the produced Null-terminated
Unicode string.
@param BufferSize The size, in bytes, of the output buffer specified by StartOfBuffer.
@param Offset The offset of the buffer.
@param Format A Null-terminated Unicode format string.
@param ... The variable argument list that contains pointers to Null-
terminated Unicode strings to be printed
**/
UINTN
EFIAPI
EDBSPrintWithOffset (
OUT CHAR16 *Buffer,
IN INTN BufferSize,
IN UINTN Offset,
IN CONST CHAR16 *Format,
...
)
{
UINTN Return;
VA_LIST Marker;
ASSERT (BufferSize - (Offset * sizeof(CHAR16)) > 0);
VA_START (Marker, Format);
Return = UnicodeVSPrint (Buffer + Offset, (UINTN)(BufferSize - (Offset * sizeof(CHAR16))), Format, Marker);
VA_END (Marker);
return Return;
}
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