// output a character to the console
static void
cons_putc_color(int font_color, int bg_color, int c)
{
const char *esc_seq_font = color_entries[font_color].esc_seq_font;
const char *esc_seq_bg = color_entries[bg_color].esc_seq_bg;
uint8_t attr = 0;
if (font_color < 0 || font_color >= COLOR_MAX ||
bg_color < 0 || bg_color >= COLOR_MAX)
panic("invalid color specifier\n");
// define NO_COLOR flag in order to keep grading scripts happy;
// python's regexes have problems with ansi escape sequences;
// it is easier to pass flag and disable colors for grading rather than
// discarding sequences in every grading regex;
#ifndef NO_COLOR
output_esc_seq(esc_seq_font);
output_esc_seq(esc_seq_bg);
#endif
serial_putc(c);
attr = ((bg_color & 0x7) << 4) | (font_color & 0xf);
c |= (attr << 8);
lpt_putc(c);
cga_putc(c);
}
// output a character to the console
static void
cons_putc(int c)
{
serial_putc(c);
lpt_putc(c);
cga_putc(c);
}
void cga_puts(const char *s)
{
int i = 0;
while (s[i]) {
cga_putc(s[i]);
i++;
}
}
/* cons_putc - print a single character @c to console devices */
void
cons_putc(int c) {
unsigned long intr_flag;
local_irq_save(intr_flag);
{
lpt_putc(c);
cga_putc(c);
serial_putc(c);
}
local_irq_restore(intr_flag);
}
/* cons_putc - print a single character @c to console devices */
void cons_putc(int c)
{
bool intr_flag;
local_intr_save(intr_flag);
{
lpt_putc(c);
cga_putc(c);
serial_putc(c);
}
local_intr_restore(intr_flag);
}
void
cons_putc(int c)
{
if(panicked) {
cli();
for(;;)
;
}
lpt_putc(c);
cga_putc(c);
}
// output a character to the console
void
cons_putc(int c)
{
lpt_putc(c);
cga_putc(c);
}
extern void console_putc(int c) {
cga_putc(c);
}
static void cga_putc(int c)
{
#if CRT_SAVEROWS > 0
// unscroll if necessary
if (crtsave_backscroll > 0) {
cga_savebuf_copy(crtsave_pos + crtsave_size, 1);
crtsave_backscroll = 0;
}
#endif
// if no attribute given, then use light gray on black
if (!(c & ~0xFF))
c |= 0x0700;
switch (c & 0xff) {
case '\b':
if (crt_pos > 0) {
crt_pos--;
crt_buf[crt_pos] = (c & ~0xff) | ' ';
}
break;
case '\n':
crt_pos += CRT_COLS;
/* fallthru */
case '\r':
crt_pos -= (crt_pos % CRT_COLS);
break;
case '\t':
cga_putc(' ');
cga_putc(' ');
cga_putc(' ');
cga_putc(' ');
break;
default:
crt_buf[crt_pos++] = c; /* write the character */
break;
}
// What is the purpose of this?
if (crt_pos >= CRT_SIZE) {
int i;
#if CRT_SAVEROWS > 0
// Save the scrolled-back row
if (crtsave_size == CRT_SAVEROWS - CRT_ROWS)
crtsave_pos = (crtsave_pos + 1) % CRT_SAVEROWS;
else
crtsave_size++;
memcpy(crtsave_buf + ((crtsave_pos + crtsave_size - 1) % CRT_SAVEROWS) * CRT_COLS, crt_buf, CRT_COLS * sizeof(uint16_t));
#endif
memcpy(crt_buf, crt_buf + CRT_COLS, (CRT_SIZE - CRT_COLS) * sizeof(uint16_t));
for (i = CRT_SIZE - CRT_COLS; i < CRT_SIZE; i++)
crt_buf[i] = 0x0700 | ' ';
crt_pos -= CRT_COLS;
}
/* move that little blinky thing */
outb(addr_6845, 14);
outb(addr_6845 + 1, crt_pos >> 8);
outb(addr_6845, 15);
outb(addr_6845 + 1, crt_pos);
}
// output a character to the console
void cons_putc(int c)
{
cga_putc(c);
}//cons_putc()
