X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/rsbs2/blobdiff_plain/5d56af7260bdf1f868625cb2e42d9ccc844ee276..a4019508ce28725ff1aefbada67b2be4c2e0015e:/rsb-lz.c diff --git a/rsb-lz.c b/rsb-lz.c index 495d8d8..ddd9a53 100644 --- a/rsb-lz.c +++ b/rsb-lz.c @@ -1,3 +1,11 @@ +#include +#include +#include +#include +#include +#include "rsb-crc.h" +#include "rsb-lz.h" + /* TODO: IMPLEMET THIS! */ /* Probably very broken lzw implementation by Agilent: * @@ -417,3 +425,303 @@ * 59b7c: 14000410 strne r0, [r0], #-1040 * 59b80: 46335053 undefined */ + +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(const char *fname) +{ + fprintf(stderr,"%s: error extracting...\n", fname); + exit(1); +} + +struct s_59b78 { + unsigned char *start; /* 0 */ + unsigned char *stop; /* 4 */ + unsigned char y; /* 8 */ + unsigned char x; /* 9 */ +}; + +unsigned int fn_597c8(struct s_59b78 *r6_data) +{ + 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 *r11_data, unsigned int r10_arg2) +{ + 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[]) +{ + unsigned int r5; + unsigned int r2; + unsigned int r4; + unsigned int r6; + unsigned int r7; + unsigned int r11; + unsigned char arr_59b64[1024]; + + r5 = 1; + + do { + do { + r2 = fn_59848(data); + printf("r2: 0x%x\n", r2); + if (r2 == 0) + break; + + r2 = fn_598b4(data, 8) & 0xff; + r4 = r2; + + fn_5980c(r4, mem); + arr_59b64[r5] = r4 & 0xff; + r2 = r5 + 1; + r2 = r2 << 22; + r2 = r2 >> 22; + r5 = r2; + } while(1); + + r11 = fn_598b4(data, 0x0a); + if(r11 == 0) + return; + + r2 = fn_598b4(data, 0x04); + r7 = r2 + 1; + r6 = 0; + do { + r2 = r6 + r11; + r2 = r2 << 22; + r2 = r2 >> 22; + r4 = arr_59b64[r2]; + fn_5980c(r4, mem); + arr_59b64[r5] = r4 & 0xff; + r2 = r5 + 1; + r2 = r2 << 22; + r2 = r2 >> 22; + r5 = r2; + r6++; + } while(r6 <= r7); + } while(1); +} + +unsigned int crc_check_59684(unsigned char *arg1, unsigned int arg2, unsigned int magic) +{ + unsigned int r3; + unsigned int r4; + unsigned int r5; + +#if 0 + if (r0 < 0xc0000000) + return 1; +#endif + + r4 = *((unsigned int*)arg1 + 0x20); + r5 = *((unsigned int*)arg1 + 0x24); + + if (r5 != magic) + return 2; + + if (arg2 >= r4) + r5 = 0; + else + return 3; + + r5 = ~rsb_crc(~0x00, arg1, r4); + r3 = *((unsigned int*)(arg1 + r4)); + printf("Checksums: 0x%02x <-> 0x%02x\n", r5, r3); + + if (r3 == r5) + return 0; + + return 4; +} + +void fn_59508() +{ + fprintf(stderr,"%s\n", __func__); +} + +void extract_lz_file(unsigned char *buf, unsigned char *name) +{ + unsigned char *r3; + unsigned int r5; + unsigned char *r7 = NULL; /* Arg1, mem start */ + unsigned char *r10 = NULL; /* Arg2, mem end */ + unsigned char *r11 = buf; /* Arg3 */ + 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(__func__); + + r3 = r11 + 4; + r5 = *((unsigned int*)r3); + printf(", Length: %d\n", r5); + + r3 = r7 + r5; + if (r3 > r10) + fn_59788(__func__); + + 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); + + r3 = r7 + 0x20; + r5 = *((unsigned int*)r3); + + if (crc_check_59684(r7, r5, 0x46335053) != 0) + fn_59788(__func__); + + fn_59508(); + + free(r7); +} + +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); + extract_lz_file(fw + i, j+1); + break; + } + j--; + } + printf("\n"); + } + } +}