From 2d11a259569dd510123f726b862edcbe2b3c6e93 Mon Sep 17 00:00:00 2001
From: Yves Fischer <yvesf-git@xapek.org>
Date: Wed, 16 Jan 2013 14:37:47 +0100
Subject: ps2

---
 systemtap/dump-ps2/dump.stap | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 systemtap/dump-ps2/dump.stap

(limited to 'systemtap')

diff --git a/systemtap/dump-ps2/dump.stap b/systemtap/dump-ps2/dump.stap
new file mode 100644
index 0000000..26a71c4
--- /dev/null
+++ b/systemtap/dump-ps2/dump.stap
@@ -0,0 +1,24 @@
+function timestamp:string() {
+  printf("[%012ld]\t", jiffies());
+}
+
+
+probe module("psmouse").function("psmouse_process_byte") {
+    timestamp();
+    for (i=0; i < $psmouse->pktsize; i++) {
+        printf("%02x ", $psmouse->packet[i]);
+    }
+
+    btnLeft = ($psmouse->packet[0] >> 0) & 1;
+    btnRight = ($psmouse->packet[0] >> 1) & 1;
+    btnMiddle = ($psmouse->packet[0] >> 2) & 1;
+
+    yOver = ($psmouse->packet[0] >> 7) & 1;
+    xOver = ($psmouse->packet[0] >> 6) & 1;
+
+    moveX = (($psmouse->packet[0] >> 4) & 1) ? -1*(255-$psmouse->packet[1]) :  $psmouse->packet[1];
+    moveY = (($psmouse->packet[0] >> 5) & 1) ? -1*(255-$psmouse->packet[2]) :  $psmouse->packet[2];
+
+    printf(" moveX=%04d moveY=%04d yOver=%d xOver=%d", moveX, moveY, yOver, xOver);
+    printf(" btnLeft=%d btnRight=%d btnMiddle=%d\n", btnLeft, btnRight, btnMiddle);
+}
-- 
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