From 09535fef83918eff9ff7a8e77ad5a1aea6bf3c82 Mon Sep 17 00:00:00 2001
From: px4dev <px4@purgatory.org>
Date: Mon, 14 Jan 2013 09:34:33 -0800
Subject: Start adding PX4 firmware helper macros

---
 Debug/PX4 | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 Debug/PX4

diff --git a/Debug/PX4 b/Debug/PX4
new file mode 100644
index 000000000..7d5905939
--- /dev/null
+++ b/Debug/PX4
@@ -0,0 +1,54 @@
+#
+# Various PX4-specific macros
+#
+source Debug/NuttX
+
+echo Loading PX4 GDB macros.  Use 'help px4' for more information.\n
+
+define px4
+	echo Use 'help px4' for more information.\n
+end
+
+document px4
+. Various macros for working with the PX4 firmware.
+.
+.    perf
+.        Prints the state of all performance counters.
+.
+. Use 'help <macro>' for more specific help.
+end
+
+
+define _perf_print
+	set $hdr = (struct perf_ctr_header *)$arg0
+	printf "%p\n", $hdr
+	printf "%s: ", $hdr->name
+	# PC_COUNT
+	if $hdr->type == 0
+		set $count = (struct perf_ctr_count *)$hdr
+		printf "%llu events,\n", $count->event_count;
+	end
+	# PC_ELPASED
+	if $hdr->type == 1
+		set $elapsed = (struct perf_ctr_elapsed *)$hdr
+		printf "%llu events, %lluus elapsed, min %lluus, max %lluus\n", $elapsed->event_count, $elapsed->time_total, $elapsed->time_least, $elapsed->time_most
+	end
+	# PC_INTERVAL
+	if $hdr->type == 2
+		set $interval = (struct perf_ctr_interval *)$hdr
+		printf "%llu events, %llu avg, min %lluus max %lluus\n", $interval->event_count, ($interval->time_last - $interval->time_first) / $interval->event_count, $interval->time_least, $interval->time_most
+	end
+end
+
+define perf
+	set $ctr = (sq_entry_t *)(perf_counters.head)
+	while $ctr != 0
+		_perf_print $ctr
+		set $ctr = $ctr->flink
+	end
+end
+
+document perf
+.    perf
+.        Prints performance counters.
+end
-- 
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