From 9083693311cfae1ba2f233cb651daaab0e9b4b20 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Fri, 30 Jan 2009 15:48:28 +0100
Subject: [PATCH] search for compressed sections in firmware image

---
 firmware.c |  2 ++
 rsb-lz.c   | 27 +++++++++++++++++++++++++++
 rsb-lz.h   |  2 ++
 3 files changed, 31 insertions(+)

diff --git a/firmware.c b/firmware.c
index 55556fc..706a833 100644
--- a/firmware.c
+++ b/firmware.c
@@ -8,6 +8,7 @@
 #include <string.h>
 #include <strings.h>
 #include "rsb-crc.h"
+#include "rsb-lz.h"
 
 #define FINDSTR(addr, str) (!strncmp((char*)addr, str, strlen(str)))
 
@@ -452,6 +453,7 @@ int main(int argc, char **argv)
 	if (showall) {
 		show_properties(fw, statbuf.st_size - 4);
 		handle_boarddescription(fw, statbuf.st_size -4, 0);
+		search_lz_sections(fw, statbuf.st_size - 4);
 	}
 
 	if (update_crc || patch_fw || patch_bd) {
diff --git a/rsb-lz.c b/rsb-lz.c
index 495d8d8..4960fc0 100644
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -1,3 +1,6 @@
+#include <stdio.h>
+#include "rsb-lz.h"
+
 /* TODO: IMPLEMET THIS! */
 /* Probably very broken lzw implementation by Agilent:
  *
@@ -417,3 +420,27 @@
  * 59b7c:	14000410 	strne	r0, [r0], #-1040
  * 59b80:	46335053 	undefined
  */
+
+void search_lz_sections(unsigned char *fw, int len)
+{
+	int i;
+	unsigned char *j;
+
+	for(i = 0; i < len - 4; i++) {
+		if (*((unsigned int*)(fw+i)) == LZ_MAGIC) {
+			j = fw + i - 1;
+			if (*j != 0x00)
+				continue;
+			printf("0x%02x: ", i);
+			j--;
+			while (j > fw) {
+				if (*j == 0x00) {
+					printf("%s", j+1);
+					break;
+				}
+				j--;
+			}
+			printf("\n");
+		}
+	}
+}
diff --git a/rsb-lz.h b/rsb-lz.h
index bab8b64..5e1fd6d 100644
--- a/rsb-lz.h
+++ b/rsb-lz.h
@@ -1 +1,3 @@
 #define LZ_MAGIC 0x6110beef
+
+void search_lz_sections(unsigned char *fw, int len);
-- 
2.39.5