Added tool to swap endian

Signed-off-by: Damien Zammit <damien@zamaudio.com>

1 files changed, 41 insertions, 0 deletions

diff --git a/swap.py b/swap.py
new file mode 100644
index 0000000..32cc3a9
--- /dev/null
+++ b/swap.py
@@ -0,0 +1,41 @@
+# smutool  Tool for SMU
+# Copyright (C) 2015  Damien Zammit <damien@zamaudio.com>
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+# 
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# See <http://www.gnu.org/licenses/>. 
+#
+
+import sys
+
+args=sys.argv
+if len(sys.argv) == 1:
+	print "Usage: python signsmu.py <smu firmware>"
+	sys.exit()
+
+def reverse(strs):
+    return ''.join([strs[i] for i in xrange(len(strs)-1, -1, -1)])
+
+f = open(args[1], "rb")
+firmware = bytearray()
+try:
+	firmware = bytearray(f.read())
+finally:
+	f.close()
+
+for wcnt in range(0,len(firmware)/4):
+	tmp = firmware[wcnt*4]
+	firmware[wcnt*4] = firmware[wcnt*4+3]
+	firmware[wcnt*4+3] = tmp
+	tmp = firmware[wcnt*4+1]
+	firmware[wcnt*4+1] = firmware[wcnt*4+2]
+	firmware[wcnt*4+2] = tmp
+
+sys.stdout.write(firmware)