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#include <kernel/timer/timer.h>
#include <kernel/io/io.h>
#include <kernel/graphics/vesa.h>
#include <kernel/lib/string.h>
#include <kernel/lib/stdlib.h>
#include <kernel/paging/paging.h>
#include <kernel/interrupts/interrupts.h>
#include <kernel/lib/stdio.h>
#include <stdarg.h>
char *vga_buffer = (char *) 0x500;
void vga_clear()
{
uint16_t *terminal_buffer = (uint16_t *) 0xB8000;
for (size_t y = 0; y < 25; y++)
for (size_t x = 0; x < 80; x++)
terminal_buffer[y * 80 + x] = 0 | (uint16_t) 0x700;
}
void vga_log(char *msg, int line)
{
if (line == 0) vga_clear();
uint16_t *terminal_buffer = (uint16_t *) 0xB8000;
for (size_t i = 0; i < strlen(msg); i++)
terminal_buffer[line * 80 + i] = (uint16_t) msg[i] | (uint16_t) 0x700;
char string[80];
strcpy(string, "[");
strcat(string, itoa((int) get_time()));
strcat(string, "] ");
strcat(string, "INFO: ");
strcat(string, msg);
strcat(string, "\n");
strcat(vga_buffer, string);
}
void kernel_time()
{
printf("[%d] ", (int) get_time());
}
void debug(const char *fmt, ...)
{
vesa_set_color(vesa_dark_white);
kernel_time();
printf("DEBG: ");
va_list args;
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
vesa_set_color(default_text_color);
writec('\n');
}
void info(const char *fmt, ...)
{
vesa_set_color(vesa_blue);
kernel_time();
printf("INFO: ");
va_list args;
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
vesa_set_color(default_text_color);
writec('\n');
}
void warn(const char *fmt, ...)
{
vesa_set_color(vesa_dark_yellow);
kernel_time();
printf("WARN: ");
va_list args;
va_start(args, fmt);
vprintf(fmt, args);
va_end(args);
vesa_set_color(default_text_color);
writec('\n');
}
void panic(char *msg)
{
asm ("cli");
vesa_set_color(vesa_dark_red);
kernel_time();
serial_write("\nPANIC: ");
serial_write(msg);
serial_write(" - System halted!\n");
printf("PANIC: %s - System halted!\n", msg);
halt_loop();
}
void assert(int x)
{
if (x == 0) {
panic("Assertion failed");
}
}
void halt_loop()
{
serial_write("\n!!! HALT !!!\n");
asm ("cli");
loop:
asm ("hlt");
goto loop;
}
void v86(uint8_t code, regs16_t *regs)
{
paging_disable();
int32(code, regs);
paging_enable();
}
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