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Get console building

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This commit is contained in:
Eryn Wells 2016-02-27 13:02:49 -05:00
parent 5f0c65bf81
commit c6eaba487c
3 changed files with 16 additions and 9 deletions
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16
src/Console.cc
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@ -8,14 +8,17 @@
#include "Console.hh"
namespace kernel {
/** Create a VGA color pair. */
static inline uint8_t
makeVGAColor(Console::Color fg,
Console::Color bg)
{
return fg | bg << 4;
return uint8_t(fg) | uint8_t(bg) << 4;
}
/** Create a VGA character entry. */
static inline uint16_t
makeVGAEntry(char c,
@ -27,21 +30,20 @@ makeVGAEntry(char c,
}
namespace kernel {
Console::Console()
: mBase(0xB8000),
mCursor({0, 0})
: mBase(reinterpret_cast<uint16_t *>(0xB8000)),
mCursor{0, 0}
{ }
void
Console::clear(Console::Color color)
{
const uint16_t color = makeVGAColor(Color::LightGray, Color::Blue);
const uint16_t vgaColor = makeVGAColor(Color::LightGray, color);
for (size_t y = 0; y < Console::Height; y++) {
for (size_t x = 0; x < Console::Width; x++) {
const size_t index = y * Console::Width + x;
mBase[index] = makeVGAEntry(' ', color);
mBase[index] = makeVGAEntry(' ', vgaColor);
}
}
}