starting over

1 files changed, 0 insertions, 146 deletions

diff --git a/src/kernel/vga.c b/src/kernel/vga.c
deleted file mode 100644
index f83a2cf..0000000
--- a/src/kernel/vga.c
+++ /dev/null
@@ -1,146 +0,0 @@
-/*
-Copyright 2019 Benji Dial
-
-Permission to use, copy, modify, and/or distribute this
-software for any purpose with or without fee is hereby
-granted, provided that the above copyright notice and this
-permission notice appear in all copies.
-
-THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS
-ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
-IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO
-EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
-INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
-RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
-ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
-OF THIS SOFTWARE.
-*/
-
-#include "vga.h"
-#include "serial.h"
-#include <stdbool.h>
-
-#define VGA_BUFFER ((uint8_t *)0x000b8000)
-#define cols 80
-#define rows 25
-uint16_t cursor_pos = 0;
-uint8_t color = 0x70;
-
-void clear(void) {
-  uint32_t fill = 0x00200020 | (color << 24) | (color << 8);
-  for (uint32_t *i = (uint32_t *)VGA_BUFFER; i < (uint32_t *)(VGA_BUFFER + rows * cols * 2); ++i)
-    *i = fill;
-  cursor_pos = 0;
-}
-
-void scroll(void) {
-  cursor_pos -= cols * 2;
-  for (uint32_t *i = (uint32_t *)VGA_BUFFER; i < (uint32_t *)(VGA_BUFFER + (rows - 1) * cols * 2); ++i)
-    *i = *(i + cols / 2);
-  uint32_t fill = (color << 8) | (color << 24) | 0x00200020;
-  for (uint32_t *i = (uint32_t *)(VGA_BUFFER + (rows - 1) * cols * 2); i < (uint32_t *)(VGA_BUFFER + rows * cols * 2); ++i)
-    *i = fill;
-}
-
-void put_char(uint8_t ch) {
-  send_byte(ch, COM2);
-  switch (ch) {
-  case '\b':
-    if (cursor_pos)
-      VGA_BUFFER[cursor_pos -= 2] = (uint8_t)' ';
-    break;
-  case '\t':
-    while ((cursor_pos % (cols * 2)) % 20)
-      put_char(' ');
-    break;
-  case '\n':
-    if ((cursor_pos = (cursor_pos / (cols * 2) + 1) * (cols * 2)) >= cols * rows * 2)
-      scroll();
-    break;
-  default:
-    VGA_BUFFER[cursor_pos++] = ch;
-    VGA_BUFFER[cursor_pos++] = color;
-    if (cursor_pos == (cols * rows * 2))
-      scroll();
-  }
-}
-
-void put_sz(uint8_t *sz) {
-  while (*sz)
-    put_char(*(sz++));
-}
-
-void put_32_hex(uint32_t n) {
-  for (uint8_t i = 0; i < 4; ++i) {
-    put_char("0123456789abcdef"[n >> 28]);
-    n <<= 4;
-  }
-  put_char('.');
-  for (uint8_t i = 0; i < 4; ++i) {
-    put_char("0123456789abcdef"[n >> 28]);
-    n <<= 4;
-  }
-}
-
-void put_16_hex(uint16_t n) {
-  for (uint8_t i = 0; i < 4; ++i) {
-    put_char("0123456789abcdef"[n >> 12]);
-    n <<= 4;
-  }
-}
-
-void put_8_hex(uint8_t n) {
-  put_char("0123456789abcdef"[n >> 4]);
-  put_char("0123456789abcdef"[n & 0x0f]);
-}
-
-void put_32_dec(uint32_t n) {
-  if (n) {
-    bool sig = false;
-    for (uint32_t m = 1000000000; m; m /= 10) {
-      if (((n / m) % 10) || sig) {
-        sig = true;
-        put_char((uint8_t)'0' + (n / m) % 10);
-      }
-    }
-  }
-  else
-    put_char('0');
-}
-
-void put_16_dec(uint16_t n) {
-  if (n) {
-    bool sig = false;
-    for (uint16_t m = 10000; m; m /= 10) {
-      if (((n / m) % 10) || sig) {
-        sig = true;
-        put_char((uint8_t)'0' + (n / m) % 10);
-      }
-    }
-  }
-  else
-    put_char('0');
-}
-
-void put_8_dec(uint8_t n) {
-  if (n) {
-    bool sig = false;
-    for (uint8_t m = 100; m; m /= 10) {
-      if (((n / m) % 10) || sig) {
-        sig = true;
-        put_char((uint8_t)'0' + (n / m) % 10);
-      }
-    }
-  }
-  else
-    put_char('0');
-}
-
-void move_cursor(uint8_t col, uint8_t row) {
-  cursor_pos = (col + row * cols) * 2;
-}
-
-void set_color(uint8_t c) {
-  color = c;
-}