From 14ff7444fbe0e46226b640411372a5895db4fd74 Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Fri, 30 Jan 2009 20:37:03 +0100
Subject: [PATCH] begin lz implementation

---
 firmware.c | 10 ++++++-
 rsb-lz.c   | 86 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 95 insertions(+), 1 deletion(-)

diff --git a/firmware.c b/firmware.c
index 706a833..2c9960f 100644
--- a/firmware.c
+++ b/firmware.c
@@ -255,6 +255,7 @@ void syntax(char *name)
 	fprintf(stderr,"\t-d\t\tdisplay all properties of the image\n");
 	fprintf(stderr,"\t-u\t\tupdate checksum of the image\n");
 	fprintf(stderr,"\t-b\t\tmodify BOARD_DESCRIPTION for more power-switch options\n");
+	fprintf(stderr,"\t-e\t\textract files in firmware\n");
 	fprintf(stderr,"\t-t property\tset 'property' to true\n");
 	fprintf(stderr,"\t-f property\tset 'property' to false\n");
 	fprintf(stderr,"\t-w property\tallow read-write access to 'property'\n");
@@ -352,11 +353,12 @@ int main(int argc, char **argv)
 	int update_crc = 0;
 	int patch_bd = 0;
 	int patch_fw = 0;
+	int extract = 0;
 
 	if (argc < 2)
 		syntax(argv[0]);
 
-	while ((opt = getopt(argc, argv, "dubt:f:w:r:")) != -1) {
+	while ((opt = getopt(argc, argv, "dubet:f:w:r:")) != -1) {
 		switch(opt) {
 			case 'd':
 				showall = 1;
@@ -367,6 +369,9 @@ int main(int argc, char **argv)
 			case 'b':
 				patch_bd = 1;
 				break;
+			case 'e':
+				extract = 1;
+				break;
 			case 't':
 			case 'f':
 			case 'w':
@@ -453,6 +458,9 @@ int main(int argc, char **argv)
 	if (showall) {
 		show_properties(fw, statbuf.st_size - 4);
 		handle_boarddescription(fw, statbuf.st_size -4, 0);
+	}
+
+	if (extract) {
 		search_lz_sections(fw, statbuf.st_size - 4);
 	}
 
diff --git a/rsb-lz.c b/rsb-lz.c
index 4960fc0..e3ce091 100644
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -1,4 +1,8 @@
 #include <stdio.h>
+#include <stdlib.h>
+#include <strings.h>
+#include <string.h>
+#include <errno.h>
 #include "rsb-lz.h"
 
 /* TODO: IMPLEMET THIS! */
@@ -421,6 +425,87 @@
  * 59b80:	46335053 	undefined
  */
 
+void fn_59560(unsigned int arg1)
+{
+}
+
+void fn_59578(unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
+{
+}
+
+void fn_59788()
+{
+	fprintf(stderr,"error extracting...\n");
+	exit(1);
+}
+
+struct s_59b78 {
+	unsigned char *start;
+	unsigned char *stop;
+	unsigned char y; /* 8 */
+	unsigned char x; /* 9 */
+};
+
+void fn_5993c(struct s_59b78 *data, unsigned int mem[])
+{
+}
+
+void extract_lz_file(unsigned char *buf, unsigned char *name)
+{
+	unsigned int r0;
+	unsigned int r1;
+	unsigned int r2;
+	unsigned char *r3;
+	unsigned int r4;
+	unsigned int r5;
+	unsigned int r6;
+	unsigned char *r7 = NULL; /* Arg1, mem start */
+	unsigned int r8;
+	unsigned int r9;
+	unsigned char *r10 = NULL; /* Arg2, mem end */
+	unsigned char *r11 = buf; /* Arg3 */
+	unsigned int r12;
+	unsigned int r13;
+	struct s_59b78 struct1;
+	unsigned int arr_59b7c[1024];
+
+	r7 = malloc(1024*1024*1024);
+	r10 = r7 + (1024*1024*1024);
+
+	if (r7 == NULL) {
+		perror("malloc");
+		exit(1);
+	}
+
+	fn_59578(0, 0, 0x3f, 0x33);
+	fn_59578(4, 0x10000000, 0x33, 0x366);
+	fn_59578(5, 0x14000000, 0x1b, 0x733);
+	fn_59578(7, 0xc0000000, 0x3b, 0x33);
+	fn_59560(0x1005);
+
+	if (*((unsigned int*)r11) != LZ_MAGIC)
+		fn_59788();
+	r3 = r11 + 4;
+	r5 = *((unsigned int*)r3);
+	printf(", Length: %d\n", r5);
+
+	r3 = r7 + r5;
+	if (r3 > r10)
+		fn_59788();
+	
+	struct1.start = r11 + 8;
+	struct1.stop = r5 + r11;
+	struct1.x = 0;
+	struct1.y = 0x80;
+
+	arr_59b7c[0] = (unsigned int)r7;
+	arr_59b7c[1] = (unsigned int)(r5 + r7);
+
+	fn_5993c(&struct1, arr_59b7c);
+
+	free(r7);
+}
+
 void search_lz_sections(unsigned char *fw, int len)
 {
 	int i;
@@ -436,6 +521,7 @@ void search_lz_sections(unsigned char *fw, int len)
 			while (j > fw) {
 				if (*j == 0x00) {
 					printf("%s", j+1);
+					extract_lz_file(fw + i, j+1);
 					break;
 				}
 				j--;
-- 
2.39.2