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#include <stdint.h>
#include <stdarg.h>
#include "vga.h"
#include "serial.h"
#include "console.h"
#include "stdlib.h"
#include "stdio.h"
#include "interrupts.h"
#include "setjmp.h"
static jmp_buf panic_jmp_buf;
static vga_t vga;
static console_t console;
// static serial_t serial;
void entry( void )
{
// serial_t serial;
// serial_init( &serial );
// vga_t vga;
vga_init( &vga );
vga_set_color( &vga, VGA_COLOR_LIGHT_GREY );
vga_set_background_color( &vga, VGA_COLOR_BLACK );
// console_t console;
console_init( &console );
console_add_vga_output( &console, &vga );
// console_add_serial_output( &console, &serial );
// initialize the early console of the kernel
stdio_set_console( &console );
puts( "Started early kernel console" );
printf( "Kernel code and data is at 0x%X, kernel stack at 0x%X\n", 0x8400, 0x90000 );
puts( "Initializing interrupts" );
interrupt_t interrupt;
interrupts_init( &interrupt );
interrupts_enable( );
//~ vga_put_char_at( &vga, 81, 20, 'X' );
// exit point in case of kernel panic, do this as soon as
// possible
int v = setjmp( panic_jmp_buf );
printf( "setjmp returned %d\n", v );
if( v > 0 ) {
goto TERMINATE;
}
console_put_string( &console, "Running.." );
const char bar[] = "\\|/-";
int y_pos = vga_get_cursor_y( &vga );
int x_pos = vga_get_cursor_x( &vga );
int i = 0;
for( i = 0; i < 10000; i++ ) {
if( i % 1000 == 1 ) {
vga_put_char_at( &vga, x_pos, y_pos, '.' );
x_pos++;
// serial_put_char( &serial, '.' );
int y = 0;
int x = 12 / y;
printf( "Hex number is 0x%X and string is '%s'\n", x, "abaos" );
}
vga_put_char_at( &vga, x_pos, y_pos, bar[i%4] );
for( int j = 0; j < 1500; j++ ) {
}
}
vga_put_char_at( &vga, x_pos, y_pos, '.' );
// serial_put_char( &serial, '.' );
console_put_newline( &console );
TERMINATE:
puts( "Terminating" );
}
void kernel_panic( const char *format, ... )
{
(void)printf( "\n*** KERNEL PANIC ***\n" );
va_list args;
va_start( args, format );
(void)vprintf( format, args );
va_end( args );
longjmp( panic_jmp_buf, 47 );
}
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