From a4534660fecb1b571c24ad82e67bc6c2fb814cb9 Mon Sep 17 00:00:00 2001 From: Danny Holman Date: Sun, 24 Jan 2021 21:10:57 -0600 Subject: x86: reorganize the i386 directory Add structure to the internals of the x86 directory. Signed-off-by: Danny Holman --- arch/i386/tty.c | 55 ------------------------------------------------------- 1 file changed, 55 deletions(-) delete mode 100644 arch/i386/tty.c (limited to 'arch/i386/tty.c') diff --git a/arch/i386/tty.c b/arch/i386/tty.c deleted file mode 100644 index 9c3985b..0000000 --- a/arch/i386/tty.c +++ /dev/null @@ -1,55 +0,0 @@ -#include "vga.h" -#include -#include -#include -#include - -static const size_t VGA_WIDTH = 80; -static const size_t VGA_HEIGHT = 25; -static uint16_t *const VGA_MEMORY = (uint16_t*)0xB8000; - -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 tty_putchar(char c) { - unsigned char uc = c; - tty_putentryat(uc, terminal_color, terminal_column, terminal_row); - if (++terminal_column == VGA_WIDTH) { - terminal_column = 0; - if (++terminal_row == VGA_HEIGHT) - terminal_row = 0; - } -} - -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)); -} -- cgit v1.2.3