everything needed implemented, but it's broken. probably fn_5993c is wrong

[rsbs2] / rsb-lz.c

diff --git a/rsb-lz.c b/rsb-lz.c
index a776e8dcc02ef9d0fd23ae3447eb8ae14d20b56b..ddd9a53ce0aa884cadbfc094a8a7d44876f98b9a 100644 (file)
--- a/rsb-lz.c
+++ b/rsb-lz.c
@@ -428,37 +428,131 @@
 
 void fn_59560(unsigned int arg1)
 {
+       fprintf(stderr,"%s\n", __func__);
 }
 
 void fn_59578(unsigned int arg1, unsigned int arg2, unsigned int arg3, unsigned int arg4)
 {
+       fprintf(stderr,"%s\n", __func__);
 }
 
-void fn_59788()
+void fn_59788(const char *fname)
 {
-       fprintf(stderr,"error extracting...\n");
+       fprintf(stderr,"%s: error extracting...\n", fname);
        exit(1);
 }
 
 struct s_59b78 {
-       unsigned char *start;
-       unsigned char *stop;
+       unsigned char *start; /* 0 */
+       unsigned char *stop; /* 4 */
        unsigned char y; /* 8 */
        unsigned char x; /* 9 */
 };
 
-unsigned int fn_59848(struct s_59b78 *data)
+unsigned int fn_597c8(struct s_59b78 *r6_data)
 {
-       return 0;
+       unsigned char *r0;
+       unsigned char *r1;
+       unsigned char r5;
+
+       r5 = 0;
+
+       r0 = r6_data->start;
+       r1 = r6_data->stop;
+
+       if (r1 < r0)
+               fn_59788(__func__);
+
+       r5 = *r0;
+       r0++;
+       r6_data->start = r0;
+
+       return r5;
+}
+
+unsigned int fn_59848(struct s_59b78 *r6_data)
+{
+       unsigned int r1;
+       unsigned int r2;
+       unsigned int r5;
+
+       r1 = r6_data->y;
+       if (r1 == 0x80) {
+               r6_data->x = fn_597c8(r6_data);
+       }
+       r1 = r6_data->y;
+       r2 = r6_data->x;
+       r1 = r1 & r2;
+       r5 = r1 & 0xff;
+
+       r1 = r6_data->y;
+       r1 = r1 >> 1;
+       r6_data->y = r1;
+       if (r1 == 0)
+               r1 = 0x80;
+       
+       r6_data->y = r1;
+       if (r5 == 0)
+               return 0;
+
+       return 1;
 }
 
-unsigned int fn_598b4(struct s_59b78 *data, unsigned int arg2)
+unsigned int fn_598b4(struct s_59b78 *r11_data, unsigned int r10_arg2)
 {
-       return 0;
+       unsigned int r1;
+       unsigned int r2;
+       unsigned int r6;
+       unsigned int r7;
+
+       r1 = r10_arg2 - 1;
+       r6 = 1 << r1;
+
+       r7 = 0;
+       do {
+               r1 = r11_data->y;
+               if (r1 == 0x80) {
+                       r1 = fn_597c8(r11_data);
+               }
+               r11_data->x = r1;
+               r1 = r11_data->y;
+               r2 = r11_data->x;
+               r1 = r1 & r2;
+               if (r1 != 0)
+                       r7 = r7 | r6;
+
+               r6 = r6 >> 1;
+
+               r2 = r11_data->y;
+               r2 = r2 >> 1;
+               r11_data->y = r2;
+
+               r1 = r11_data->y;
+               if(r1 == 0) {
+                       r11_data->y = 0x80;
+               }
+       } while (r6 != 0);
+
+       return r7;
 }
 
 void fn_5980c(unsigned int arg1, unsigned int mem[])
 {
+       unsigned char *r1;
+       unsigned char *r2;
+
+       r1 = (unsigned char*)mem[0];
+       r2 = (unsigned char*)mem[1];
+
+       if (r1 > r2) {
+               printf("r1: 0x%08x, r2: 0x%08x\n", (unsigned int)r1, (unsigned int)r2);
+               fn_59788(__func__);
+       }
+
+       *r1 = arg1 & 0xff;
+
+       r1++;
+       mem[0] = (unsigned int)r1;
 }
 
 void fn_5993c(struct s_59b78 *data, unsigned int mem[])
@@ -476,6 +570,7 @@ void fn_5993c(struct s_59b78 *data, unsigned int mem[])
        do {
                do {
                        r2 = fn_59848(data);
+                       printf("r2: 0x%x\n", r2);
                        if (r2 == 0)
                                break;
 
@@ -547,6 +642,7 @@ unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned in
 
 void fn_59508()
 {
+       fprintf(stderr,"%s\n", __func__);
 }
 
 void extract_lz_file(unsigned char *buf, unsigned char *name)
@@ -574,14 +670,15 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
        fn_59560(0x1005);
 
        if (*((unsigned int*)r11) != LZ_MAGIC)
-               fn_59788();
+               fn_59788(__func__);
+
        r3 = r11 + 4;
        r5 = *((unsigned int*)r3);
        printf(", Length: %d\n", r5);
 
        r3 = r7 + r5;
        if (r3 > r10)
-               fn_59788();
+               fn_59788(__func__);
        
        struct1.start = r11 + 8;
        struct1.stop = r5 + r11;
@@ -597,7 +694,7 @@ void extract_lz_file(unsigned char *buf, unsigned char *name)
        r5 = *((unsigned int*)r3);
 
        if (crc_check_59684(r7, r5, 0x46335053) != 0)
-               fn_59788();
+               fn_59788(__func__);
        
        fn_59508();