Add profiling script

fw/profile.gdb

@@ -0,0 +1,5 @@
+set pagination off
+target remote localhost:3333
+while(1)
+    continue
+end

fw/profile.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+NLOOPS=1000
+SLEEP=0.1
+
+[ $# -lt 1 ] && echo "ERROR: Not enough arguments" && exit 2
+elffile="$1"
+
+trap "exit" SIGINT
+
+logfile=$(mktemp)
+
+arm-none-eabi-gdb -x profile.gdb "$elffile" > "$logfile" 2>/dev/null&
+gdbpid=$!
+trap "kill -TERM $gdbpid; rm $logfile" EXIT
+echo "Gathering..."
+for i in $(seq 1 $NLOOPS); do
+    echo "$i/$NLOOPS"
+    kill -INT $gdbpid
+    sleep $SLEEP
+done
+kill -TERM $gdbpid
+trap "rm '$logfile'" EXIT
+
+egrep -o '\w+ \(.*\) at .*' "$logfile" |cut -d' ' -f1|sort|uniq -c|sort -n
+echo 'Total:' $(egrep -c '\w+ \(.*\) at .*' "$logfile")
+