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Diffstat (limited to 'arch/i386/boot/tty.c')
-rw-r--r--arch/i386/boot/tty.c87
1 files changed, 0 insertions, 87 deletions
diff --git a/arch/i386/boot/tty.c b/arch/i386/boot/tty.c
deleted file mode 100644
index aa77736..0000000
--- a/arch/i386/boot/tty.c
+++ /dev/null
@@ -1,87 +0,0 @@
-#include "vga.h"
-#include <kernel/tty.h>
-#include <kernel/string.h>
-#include <stddef.h>
-#include <stdint.h>
-
-static const size_t VGA_WIDTH = 80;
-static const size_t VGA_HEIGHT = 25;
-static uint16_t *const VGA_MEMORY = (uint16_t*)0xC03FF000;
-
-static size_t terminal_row;
-static size_t terminal_column;
-static uint8_t terminal_color;
-static uint16_t *terminal_buffer;
-
-void tty_init(void) {
- terminal_row = 0;
- terminal_column = 0;
- terminal_color = vga_entry_color(VGA_COLOR_LIGHT_GREY, VGA_COLOR_BLACK);
- terminal_buffer = VGA_MEMORY;
- for (size_t y = 0; y < VGA_HEIGHT; y++) {
- for (size_t x = 0; x < VGA_WIDTH; x++) {
- const size_t index = y * VGA_WIDTH + x;
- terminal_buffer[index] = vga_entry(' ', terminal_color);
- }
- }
-}
-
-void tty_setcolor(uint8_t color) {
- terminal_color = color;
-}
-
-void tty_putentryat(unsigned char c, uint8_t color, size_t x, size_t y) {
- const size_t index = y * VGA_WIDTH + x;
- terminal_buffer[index] = vga_entry(c, color);
-}
-
-void terminal_scroll(void) {
- for (size_t i = 0; i < VGA_HEIGHT; i++) {
- for (size_t j = 0; j < VGA_WIDTH; j++)
- terminal_buffer[i * VGA_WIDTH + j] = terminal_buffer[(i+1) * VGA_WIDTH + j];
- }
-}
-
-void tty_putchar(char c) {
- unsigned char uc;
-
- uc = c;
- switch (uc) {
- case '\n':
- terminal_column = 0;
- if (++terminal_row == VGA_HEIGHT) {
- terminal_row--;
- terminal_scroll();
- }
- break;
- case '\t':
- terminal_column += 4;
- if (++terminal_column == VGA_WIDTH) {
- terminal_column = 4;
- if (++terminal_row == VGA_HEIGHT) {
- terminal_row--;
- terminal_scroll();
- }
- }
- break;
- default:
- tty_putentryat(uc, terminal_color, terminal_column, terminal_row);
- if (++terminal_column == VGA_WIDTH) {
- terminal_column = 0;
- if (++terminal_row == VGA_HEIGHT) {
- terminal_row--;
- terminal_scroll();
- }
- }
- break;
- }
-}
-
-void tty_write(const char *data, size_t size) {
- for (size_t i = 0; i < size; i++)
- tty_putchar(data[i]);
-}
-
-void tty_writestring(const char *data) {
- tty_write(data, strlen(data));
-}