start of 0.0.9 branch, using multiboot this time

1 files changed, 37 insertions, 0 deletions

diff --git a/src/kernel/vga.c b/src/kernel/vga.c
index 046dda7..e3e2516 100644
--- a/src/kernel/vga.c
+++ b/src/kernel/vga.c
@@ -18,6 +18,7 @@ OF THIS SOFTWARE.
 */
 
 #include "vga.h"
+#include <stdbool.h>
 
 uint16_t cursor_pos = 0;
 uint8_t color = 0xf0;
@@ -62,6 +63,42 @@ void put_sz(uint8_t *sz) {
     put_char(*(sz++));
 }
 
+void put_16(uint16_t n) {
+  bool s = false;
+  if (n / 10000) {
+    put_char((uint8_t)'0' + n / 10000);
+    s = true;
+  }
+  n %= 10000;
+  if (n / 1000 || s) {
+    put_char((uint8_t)'0' + n / 1000);
+    s = true;
+  }
+  n %= 1000;
+  if (n / 100 || s) {
+    put_char((uint8_t)'0' + n / 100);
+    s = true;
+  }
+  n %= 100;
+  if (n / 10 || s) {
+    put_char((uint8_t)'0' + n / 10);
+    s = true;
+  }
+  put_char((uint8_t)'0' + n % 10);
+}
+
+void put_32_hex(uint32_t n) {
+  for (uint8_t i = 0; i < 4; ++i) {
+    put_char(n / 0xf0000000 + (n < 0xa0000000 ? (uint8_t)'0' : (uint8_t)'a' - 1));
+    n <<= 4;
+  }
+  put_char('_');
+  for (uint8_t i = 0; i < 4; ++i) {
+    put_char(n / 0xf0000000 + (n < 0xa0000000 ? (uint8_t)'0' : (uint8_t)'a' - 1));
+    n <<= 4;
+  }
+}
+
 void move_cursor(uint8_t col, uint8_t row) {
   cursor_pos = (col + row * cols) * 2;
 }