--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cos/kernel/klib.c	Fri Dec 02 14:00:02 2011 +0100
@@ -0,0 +1,41 @@
+#include "kernel.h"
+
+void panic(char *msg) 
+{
+   printf("Kernel panic: ");
+   printf(msg);
+   magicBochsBreak();
+   halt();
+}
+
+// IO port helpers:
+void outb(uint16_t port, uint8_t value)
+{
+   asm volatile ("outb %1, %0" : : "dN" (port), "a" (value));
+}
+
+uint8_t inb(uint16_t port)
+{
+   uint8_t ret;
+   asm volatile ("inb %1, %0" : "=a" (ret) : "dN" (port));
+   return ret;
+}
+
+uint16_t inw(uint16_t port)
+{
+   uint16_t ret;
+   asm volatile ("inw %1, %0" : "=a" (ret) : "dN" (port));
+   return ret;
+}
+
+// string functions:
+int strncmp(const char* s1, const char* s2, int size) 
+{
+  int i;
+  for (i=0; i<size; i++) 
+  {
+    if (s1[i] != s2[i]) return 0;
+  }
+  return 1;
+}
+