void fprint(char* filename){
if(!is_file(filename))
return;
unsigned int i;
for(i = 0; i < get_file_size(filename); i++)
vga_putc((char) get_file_data(filename)[i]);
vga_putc('\n');
}
bool keyboard_handler(struct interrupt_cpu_state *unused(r)) {
static bool shift_held = false;
uint8_t status_port;
uint8_t key_code;
char c = 0;
status_port = read_port(Keyboard_Status_Port);
if (status_port & Keyboard_Input_Available) {
key_code = read_port(Keyboard_Data_Port);
if (key_code == Keyboard_Right_Shift_Held ||
key_code == Keyboard_Right_Shift_Held) {
shift_held = true;
return true;
} else if (key_code == Keyboard_Right_Shift_Released ||
key_code == Keyboard_Left_Shift_Released) {
shift_held = false;
return true;
} else {
if (shift_held) {
c = keyboard_shift_map[key_code];
} else {
c = keyboard_map[key_code];
}
}
if (c != 0) {
vga_putc(c);
}
}
return true;
}
void vga_puts(const char *s, unsigned int cnt)
{
while ( *s && cnt-- ) {
vga_putc(*s);
s++;
}
}
void disp_bpb(){
vga_puts("init_fat(): read FAT12/16 volume\n");
vga_puts("\t* with OEM identifier '");
int i;
for(i = 0; i < 8; i++)
vga_putc(fat_header.oem_ident[i]);
vga_puts("'\n\t* with ");
vga_puts_hex(fat_header.sectors_per_cluster);
vga_puts(" sectors per cluster\n");
vga_puts("\t* with ");
vga_puts_hex(fat_header.number_fats);
vga_puts(" FATs\n");
vga_puts("\t* with ");
vga_puts_hex(fat_header.number_reserved);
vga_puts(" reserved sectors\n");
vga_puts("\t* with ");
vga_puts_hex(fat_header.media_type);
vga_puts(" media type\n");
vga_puts("\t* with ");
vga_puts_hex(fat_header.number_hidden);
vga_puts(" hidden sectors\n");
vga_puts("\t* with ");
vga_puts_hex(fat_header.dir_size);
vga_puts(" root entries\n");
vga_fmt("\t* with %d sectors per fat\n", fat_header.sectors_per_fat);
}
void shell_wait_cmd()
{
shell_wait = true;
shell_index = 0;
memset((unsigned char*)shell_buffer, 0, SHELL_WIDTH);
vga_putc('>');
}
void vga_puts(char const *str)
{
while (*str) {
vga_putc(*str);
++str;
}
}
/* Writes C to the vga display and serial port.
The caller has already acquired the console lock if
appropriate. */
static void
putchar_have_lock (uint8_t c)
{
ASSERT (console_locked_by_current_thread ());
write_cnt++;
serial_putc (c);
vga_putc (c);
}
void mnt_initrd(unsigned int ptr){
unsigned int address = *((unsigned int*) ptr);
size = *((unsigned int*) address);
unsigned int magic_header = *(unsigned int*)(address + 4);
unsigned int magic_footer = *(unsigned int*)(address + size - 4);
ASSERT((magic_footer == FFS_MAGIC) && (magic_header == FFS_MAGIC));
fs_root = (directory_t*) kmalloc(sizeof(directory_t));
fs_root->start = address;
unsigned int num_files = *(unsigned int*)(address + 8);
fs_root->num_files = num_files;
file_t** files_list = (file_t**) kmalloc(sizeof(file_t*) * num_files);
int i;
for(i = 0; i < num_files; i++){
file_t* new_file = (file_t*) kmalloc(sizeof(file_t));
files_list[i] = new_file;
new_file->name = (char*) (address + 12 + (i * FFS_ENTRY_SIZE));
vga_puts("CREATING: ");
vga_puts(new_file->name);
vga_putc('\t');
new_file->offset = *((unsigned int*) (address + 12 + (i * FFS_ENTRY_SIZE) + 128));
vga_puts("OFFSET: ");
vga_puts_hex(new_file->offset);
vga_putc('\t');
new_file->size = *((unsigned int*) (address + 12 + (i * FFS_ENTRY_SIZE) + 128 + 4));
vga_puts("SIZE: ");
vga_puts_hex(new_file->size);
vga_putc('\n');
new_file->data = (unsigned char*) (address + new_file->offset);
}
fs_root->files = files_list;
}
int putchar(int c) {
#ifdef __IS_MOLTAROS
vga_putc((char) c);
#else
// TODO: Write syscall
#endif
return c;
}
/* cons_putc - print a single character @c to console devices */
void
cons_putc(int c) {
bool intr_flag;
local_intr_save(intr_flag);
{
serial_putc(c);
vga_putc(c);
}
local_intr_restore(intr_flag);
}
void echo(int argc, char** argv)
{
int len = argc, i;
for (i = 1; i < len; ++i)
{
vga_puts(argv[i]);
vga_putc(' ');
}
vga_putnl();
}
void shell_char(struct keystate keys)
{
if (keys.keychar == '\n')
{
shell_wait = false;
vga_putc(keys.keychar);
}
else if (keys.keychar == '\b')
{
if (shell_index > 0)
{
--shell_index;
shell_buffer[shell_index] = 0;
vga_putc(keys.keychar);
}
}
else if (shell_index < SHELL_WIDTH)
{
shell_buffer[shell_index] = keys.keychar;
++shell_index;
vga_putc(keys.keychar);
}
}
static void timer_callback(registers_t regs){
tick++;
vga_puts("TICK:");
vga_puts_hex(tick);
vga_putc('\n');
}
int vga_putchar(int c)
{
uint_t row;
uint_t column;
int print_action;
int post_action;
int move_action;
if (!initialized) {
return EOF;
}
/* Retrieve the old cursor position */
row = vga.row;
column = vga.column;
print_action = 1;
move_action = 1;
post_action = 1;
/* Pre-print action */
switch (c) {
case '\a': /* Bell */
/* Missing */
break;
case '\b': /* Back Space */
column = column - 1;
c = ' ';
print_action = 1;
post_action = 0;
break;
case '\t': /* Tab */
column = column + 8;
print_action = 0;
post_action = 0;
break;
case '\v': /* Vertical Tab ? */
/* missing */
break;
case '\n': /* New Line */
row = row + 1;
column = 0;
print_action = 0;
post_action = 0;
break;
case '\f': /* Form Feed */
row = row + 1;
print_action = 0;
post_action = 0;
break;
case '\r': /* Line Feed */
column = 0;
print_action = 0;
post_action = 0;
break;
default:
print_action = isprint(c);
post_action = print_action;
break;
}
check_bounds(&column, &row);
/* Print */
if (print_action) {
vga_putc(c, row, column);
}
/* Post-print action */
if (post_action) {
switch (c) {
default:
column = column + 1;
break;
}
}
check_bounds(&column, &row);
/* Move */
if (move_action) {
vga_move_cursor(row, column);
}
/* Save the final cursor position */
vga.row = row;
vga.column = column;
return (unsigned char) c;
}
void vga_puts (const char *s)
{
while(*s)
vga_putc (*s++);
}
void
vgacnputchar(void *dev, register int c)
{
vga_putc(c);
}
void putchar(char c)
{
serial_putc(IO_COM1, c);
vga_putc(c);
}