report number of free pages

1 files changed, 46 insertions, 0 deletions

diff --git a/src/kernel/misc.c b/src/kernel/misc.c
new file mode 100644
index 0000000..d002345
--- /dev/null
+++ b/src/kernel/misc.c
@@ -0,0 +1,46 @@
+/*
+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 "misc.h"
+#include "vga.h"
+#include <stdbool.h>
+
+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);
+}
\ No newline at end of file