0.0.2d: Added BGA support, graphics!

drivers/tty.c

@@ -2,6 +2,8 @@
 #include <vga/vga.h>
 #include <stdio.h>
 #include <port_io.h>
+#include <new_tty.h>
+#include <fs/vfs.h>
 
 #include <tty.h>
 
@@ -18,6 +20,19 @@ void terminal_initialize(void)
   terminal_update_cursor();
 }
 
+ssize_t tty_write(struct file* f, const char* buf, size_t size)
+{
+  /*struct tty* tty = (struct tty*)f->private_data;*/
+
+  for (size_t i = 0; i < size; i++)
+  {
+    /*tty_putchar(tty, buf[i]);*/ /* do this when we have multiple TTY outputs & stuff */
+    terminal_putchar(buf[i]);
+  }
+
+  return size;
+}
+
 void terminal_get_cursor(int* row, int* column)
 {
   *row = (int) terminal_row;
@@ -106,7 +121,7 @@ void terminal_putchar(const char c)
     
     return;
   }
-  else if (uc == '\b')
+  /*else if (uc == '\b')
   {
     if (terminal_column == 0)
     {
@@ -117,7 +132,7 @@ void terminal_putchar(const char c)
       }
       else
       {
-        terminal_update_cursor(); /* For good measure */
+        terminal_update_cursor();
       
         return;
       }
@@ -131,6 +146,31 @@ void terminal_putchar(const char c)
     
     terminal_update_cursor();
 
+    return;
+  }*/
+  else if (uc == '\b')
+  {
+    if (terminal_column == 0)
+    {
+      if (terminal_row > 0)
+      {
+        terminal_row--;
+        terminal_column = VGA_WIDTH - 1;
+      }
+      else
+      {
+        terminal_update_cursor();
+      
+        return;
+      }
+    }
+    else
+    {
+      terminal_column--;
+    }
+
+    terminal_update_cursor();
+
     return;
   }