1 files changed, 19 insertions, 0 deletions
diff --git a/src/arm/PL0/PL0_utils.c b/src/arm/PL0/PL0_utils.c
new file mode 100644
index 0000000..d83edb9
--- /dev/null
+++ b/src/arm/PL0/PL0_utils.c
@@ -0,0 +1,19 @@
+#include <stddef.h>
+#include <stdint.h>
+
+#include "svc_interface.h"
+#include "PL0_utils.h"
+
+// most generic definition possible
+// the actual function defined in svc.S
+uint32_t svc(enum svc_type, ...);
+
+void putchar(char character)
+{
+  svc(UART_PUTCHAR, character);
+}
+
+char getchar(void)
+{
+  return svc(UART_GETCHAR);
+}