50 lines
948 B
C++
50 lines
948 B
C++
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/* Console.cc
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* vim: set tw=80:
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* Eryn Wells <eryn@erynwells.me>
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*/
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/**
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* Implementation of the Console class.
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*/
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#include "Console.hh"
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/** Create a VGA color pair. */
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static inline uint8_t
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makeVGAColor(Console::Color fg,
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Console::Color bg)
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{
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return fg | bg << 4;
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}
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/** Create a VGA character entry. */
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static inline uint16_t
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makeVGAEntry(char c,
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uint8_t color)
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{
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uint16_t c16 = c;
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uint16_t color16 = color;
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return c16 | color16 << 8;
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}
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namespace kernel {
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Console::Console()
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: mBase(0xB8000),
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mCursor({0, 0})
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{ }
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Console::clear(Console::Color color)
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{
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const uint16_t color = makeVGAColor(Color::LightGray, Color::Blue);
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for (size_t y = 0; y < Console::Height; y++) {
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for (size_t x = 0; x < Console::Width; x++) {
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const size_t index = y * Console::Width + x;
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mBase[index] = makeVGAEntry(' ', color);
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}
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}
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}
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} /* namespace kernel */
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