1 files changed, 37 insertions, 0 deletions
diff --git a/410guests/dog/kern/devices.S b/410guests/dog/kern/devices.S
new file mode 100644
index 0000000..a23095b
--- /dev/null
+++ b/410guests/dog/kern/devices.S
@@ -0,0 +1,37 @@
+// @author de0u
+// @author jrduvall
+//
+// "Creatures of the night, brought to light"
+
+#include <hvcall_int.h>
+
+.globl augchar
+.globl kbd_intr
+.globl timer_intr
+.globl tick_count
+
+.data
+.align 4
+ticks:
+        .long 0
+.text
+
+augchar:
+	movl $HV_ENABLE_OP, %eax
+	int $HV_INT
+pause:
+	pause
+	jmp pause
+kbd_intr:
+	addl $20, %esp        // restore %esp
+	movl -16(%esp), %eax  // augchar from red zone (interrupts are off)
+	ret
+
+timer_intr:
+	addl $20, %esp        // restore %esp
+	incl ticks
+	jmp augchar           // resume
+
+tick_count:
+	movl ticks, %eax
+	ret