262a16f4 |
1 | #include <stdio.h> |
2 | #include <string.h> |
3 | |
4 | #define IN_SIZE 0x8000 |
5 | static unsigned char buff[0x400000], buff_in[IN_SIZE]; |
6 | |
7 | int main(int argc, char *argv[]) |
8 | { |
9 | FILE *fi, *fo; |
10 | int size, bsize; |
11 | int i, o; |
12 | |
13 | if (argc != 3) { |
14 | fprintf(stderr, "usage:\n%s <sms ROM> <mx img>\n", argv[0]); |
15 | return 1; |
16 | } |
17 | |
18 | fi = fopen(argv[1], "rb"); |
19 | if (fi == NULL) { |
20 | fprintf(stderr, "can't open: %s\n", argv[1]); |
21 | return 1; |
22 | } |
23 | |
24 | fo = fopen(argv[2], "wb"); |
25 | if (fo == NULL) { |
26 | fprintf(stderr, "can't open: %s\n", argv[2]); |
27 | return 1; |
28 | } |
29 | |
30 | fseek(fi, 0, SEEK_END); |
31 | size = ftell(fi); |
32 | fseek(fi, 0, SEEK_SET); |
33 | |
34 | if (size > IN_SIZE) { |
35 | fprintf(stderr, "ROMs > 32k won't work\n"); |
36 | size = IN_SIZE; |
37 | } |
38 | |
39 | if (fread(buff_in, 1, size, fi) != size) |
40 | fprintf(stderr, "failed to read %s\n", argv[1]); |
41 | |
42 | memset(buff, 0, sizeof(buff)); |
43 | |
44 | for (bsize = 1; bsize < size; bsize <<= 1) |
45 | ; |
46 | |
47 | for (i = 0, o = 0; o < sizeof(buff); i = (i + 1) & (bsize - 1), o += 2) |
48 | buff[o] = buff[o+1] = buff_in[i]; |
49 | |
50 | if (fwrite(buff, 1, 0x400000, fo) != 0x400000) |
51 | fprintf(stderr, "failed to write to %s\n", argv[2]); |
52 | fclose(fi); |
53 | fclose(fo); |
54 | |
55 | return 0; |
56 | } |
57 | |