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Kernel: TTY scroll is now done using memmove 

This will be faster when memory functions will be optimized
This commit is contained in:
Bananymous 2022-12-27 17:45:47 +02:00
parent 5ae1fc58e9
commit 2d46281c16
1 changed files with 2 additions and 4 deletions
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6
kernel/arch/i386/TTY.cpp
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@ -303,10 +303,8 @@ void TTY::PutChar(char ch)
while (m_row >= m_height) while (m_row >= m_height)
{ {
// Shift buffer one line up memmove(m_buffer, m_buffer + m_width, m_width * (m_height - 1) * sizeof(Cell));
for (size_t y = 1; y < m_height; y++)
for (size_t x = 0; x < m_width; x++)
m_buffer[(y - 1) * m_width + x] = m_buffer[y * m_width + x];
// Clear last line in buffer // Clear last line in buffer
for (size_t x = 0; x < m_width; x++) for (size_t x = 0; x < m_width; x++)
m_buffer[(m_height - 1) * m_width + x] = { .foreground = m_foreground, .background = m_background, .character = ' ' }; m_buffer[(m_height - 1) * m_width + x] = { .foreground = m_foreground, .background = m_background, .character = ' ' };