diff options
Diffstat (limited to 'xexamine.c')
| -rw-r--r-- | xexamine.c | 25 |
1 files changed, 20 insertions, 5 deletions
@@ -5,6 +5,7 @@ #include <unistd.h> #include <errno.h> +#include "get_address.h" #include "xex.h" #define SELF "xexamine" @@ -41,7 +42,7 @@ void crc32(const void *data, size_t n_bytes, uint32_t* crc) { } void usage(int status) { - printf("Usage: " SELF " [-v] file.xex\n"); + printf("Usage: " SELF " [-v] [-s segment] file.xex\n"); if(status) fprintf(stderr, "Try '%s -h' for help\n", SELF); exit(status); } @@ -309,11 +310,15 @@ int main(int argc, char **argv) { xex_segment seg; unsigned char buffer[65536]; char *filename; - int opt, segcount = 0; + int opt, segcount = 0, only_segment = 0, header_printed = 0; uint32_t crc; - while((opt = getopt(argc, argv, "vh")) != -1) { + while((opt = getopt(argc, argv, "vhs:")) != -1) { switch(opt) { + case 's': + if( (only_segment = get_address(SELF, optarg)) < 0 ) + exit(1); + break; case 'v': xex_verbose = 1; break; @@ -340,11 +345,16 @@ int main(int argc, char **argv) { seg.object = buffer; while(xex_fread_seg(&seg, f)) { - if(!segcount) + segcount++; + if(only_segment && (only_segment != segcount)) + continue; + if(!header_printed) { printf("Seg | Start | End | Bytes | CRC32 | Type\n"); + header_printed++; + } crc32(seg.object, seg.len, &crc); printf("%3d | $%04x | $%04x | %5d | %08x | ", - ++segcount, seg.start_addr, seg.end_addr, seg.len, crc); + segcount, seg.start_addr, seg.end_addr, seg.len, crc); if(seg.start_addr == XEX_RUNAD && seg.len > 1) printf("Run $%04x", (seg.object[0] | (seg.object[1] << 8))); else if(seg.start_addr == XEX_INITAD && seg.len > 1) @@ -354,6 +364,11 @@ int main(int argc, char **argv) { putchar('\n'); } + if(only_segment && (segcount < only_segment)) { + fprintf(stderr, SELF ": can't show segment %d, only %d segments in file.\n", only_segment, segcount); + return 1; + } + if(!segcount) { fprintf(stderr, SELF ": %s is not an Atari 8-bit executable.\n", filename); return 1; |