| 1 | #include <stdio.h> |
| 2 | #include <string.h> |
| 3 | |
| 4 | #define IN_SIZE 0x8000 |
| 5 | #define OUT_SIZE 0x400000 |
| 6 | static unsigned char buff[OUT_SIZE], buff_in[IN_SIZE]; |
| 7 | |
| 8 | int main(int argc, char *argv[]) |
| 9 | { |
| 10 | FILE *fi, *fo; |
| 11 | int size, bsize; |
| 12 | int i, o; |
| 13 | |
| 14 | if (argc != 3) { |
| 15 | fprintf(stderr, "usage:\n%s <sms ROM> <mx img>\n", argv[0]); |
| 16 | return 1; |
| 17 | } |
| 18 | |
| 19 | fi = fopen(argv[1], "rb"); |
| 20 | if (fi == NULL) { |
| 21 | fprintf(stderr, "can't open: %s\n", argv[1]); |
| 22 | return 1; |
| 23 | } |
| 24 | |
| 25 | fo = fopen(argv[2], "wb"); |
| 26 | if (fo == NULL) { |
| 27 | fprintf(stderr, "can't open: %s\n", argv[2]); |
| 28 | return 1; |
| 29 | } |
| 30 | |
| 31 | fseek(fi, 0, SEEK_END); |
| 32 | size = ftell(fi); |
| 33 | fseek(fi, 0, SEEK_SET); |
| 34 | |
| 35 | if (size > IN_SIZE) { |
| 36 | fprintf(stderr, "ROMs > 32k won't work\n"); |
| 37 | size = IN_SIZE; |
| 38 | } |
| 39 | |
| 40 | if (fread(buff_in, 1, size, fi) != size) |
| 41 | fprintf(stderr, "failed to read %s\n", argv[1]); |
| 42 | |
| 43 | memset(buff, 0, sizeof(buff)); |
| 44 | |
| 45 | for (bsize = 1; bsize < size; bsize <<= 1) |
| 46 | ; |
| 47 | |
| 48 | for (i = o = 0; o < sizeof(buff); i = (i + 1) & (bsize - 1), o += 2) |
| 49 | buff[o+1] = buff_in[i]; |
| 50 | |
| 51 | if (fwrite(buff, 1, OUT_SIZE, fo) != OUT_SIZE) |
| 52 | fprintf(stderr, "failed to write to %s\n", argv[2]); |
| 53 | fclose(fi); |
| 54 | fclose(fo); |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | |