Re-wrote boot code, moved to x86 folder

src/x86/tty.cpp

@@ -0,0 +1,125 @@
+#include <stdbool.h>
+#include "tty.hpp"
+
+kernel::TTY::TTY(char* vga)
+{
+	this->vga = vga;
+	this->cursor = 0;
+	this->width = 0;
+	this->base = 10;
+}
+
+kernel::TTY& kernel::TTY::operator<<(kernel::TTY::Format fmt)
+{
+	switch(fmt)
+	{
+	case Binary:
+		base = 2;
+		break;
+	case Decimal:
+		base = 10;
+		break;
+	case Hex:
+		base = 16;
+		break;
+	}
+}
+
+kernel::TTY& kernel::TTY::operator<<(const char* str)
+{
+	return printString(str);
+}
+
+kernel::TTY& kernel::TTY::operator<<(unsigned int n)
+{
+	return printNumber(n, base, width);
+}
+
+kernel::TTY& kernel::TTY::operator<<(int n)
+{
+	return printNumber((unsigned int) n, base, width);
+}
+
+kernel::TTY& kernel::TTY::operator<<(void* n)
+{
+    return printNumber((unsigned int) n, 16, 8);
+}
+
+kernel::TTY& kernel::TTY::operator<<(char c)
+{
+        return putChar(c);
+}
+
+void kernel::TTY::setWidth(size_t width)
+{
+	this->width = width;
+}
+
+size_t kernel::TTY::getWidth()
+{
+	return width;
+}
+
+void kernel::TTY::clear()
+{
+	for(int i = 0; i < 80*25; i++)
+	{
+		vga[i * 2] = ' ';
+	}
+	cursor = 0;
+}
+
+kernel::TTY& kernel::TTY::printNumber(unsigned int n, size_t base,
+					size_t width)
+{
+	const char* digits = "0123456789ABCDEF";
+	char str[33];
+	size_t i = 1;
+	do
+	{
+		str[i] = digits[n % base];
+		n /= base;
+		i++;
+	} while(n > 0);
+	while(i <= width)
+	{
+		str[i] = '0';
+		i++;
+	}
+	str[0] = '\0';
+	for(char* s = str + (i - 1); *s; s--)
+	{
+		putChar(*s);
+	}
+	return *this;
+}
+
+kernel::TTY& kernel::TTY::printString(const char* str)
+{
+	while(*str)
+	{
+		putChar(*str);
+		str++;
+	}
+	return *this;		     
+}
+
+kernel::TTY& kernel::TTY::putChar(char c)
+{
+	switch(c)
+	{
+	case '\n':
+		cursor = (cursor + 80) - (cursor % 80);
+		break;
+	case '\t':
+		cursor = (cursor + 4) - (cursor % 4);
+		break;
+	case '\r':
+		cursor -= cursor % 160;
+		break;
+	default:
+		vga[cursor * 2] = c;
+		cursor++;
+	}
+	return *this;
+}