FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/memdump.c @ 407:19e5a3e2f9c0
fcup-settime: moved time() retrieval a little closer to the output
A fundamental problem with all simple time transfer tools is that there is
always some delay between the time retrieval on the source system and that
transmitted time being set on the destination, and the resulting time
on the destination system is off by that delay amount. This delay cannot
be fully eliminated when working in a simple environment like ours,
but we should make our best effort to minimize it. In the present case,
moving the atinterf_init() call before the time() retrieval should make
a teensy-tiny improvement.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | 9925fba699be |
children | e40bb5a6c6b9 |
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/* * This utility uses one of TI's Test Mode memory read commands (either TM3 or * ETM) in a synchronous manner (using our etmsync infrastructure) to read the * memory of a GSM device running a compatible fw version. It supplants * the former fc-olddump tool. */ #include <sys/types.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include <unistd.h> #include "etm.h" #include "tm3.h" #include "localtypes.h" #include "exitcodes.h" int use_etm; extern char *socket_pathname; extern char *rvinterf_ttyport, *rvinterf_Bopt, *rvinterf_lopt, *rvinterf_wopt; single_op_main(argc, argv) char **argv; { u32 addr, len, chunk, maxchunk; char buf[MAX_MEMREAD_BYTES]; FILE *outf; int rc; if (argc != 3) { fprintf(stderr, "usage: fc-memdump [options] start-addr dump-length binfile\n"); exit(ERROR_USAGE); } addr = strtoul(argv[0], 0, 16); len = strtoul(argv[1], 0, 16); outf = fopen(argv[2], "w"); if (!outf) { perror(argv[2]); exit(ERROR_UNIX); } if (use_etm) maxchunk = MAX_MEMREAD_BYTES; else maxchunk = TM3_MEMREAD_MAX; while (len) { chunk = len; if (chunk > maxchunk) chunk = maxchunk; if (use_etm) rc = do_memory_read(addr, buf, chunk); else rc = do_memory_read_tm3(addr, buf, chunk); if (rc) exit(rc); fwrite(buf, 1, chunk, outf); putchar('.'); fflush(stdout); addr += chunk; len -= chunk; } putchar('\n'); fclose(outf); exit(0); } main(argc, argv) char **argv; { extern int optind; extern char *optarg; int c, sopt = 0; while ((c = getopt(argc, argv, "B:el:p:s:w:")) != EOF) switch (c) { case 'B': rvinterf_Bopt = optarg; continue; case 'e': use_etm++; continue; case 'l': rvinterf_lopt = optarg; continue; case 'p': rvinterf_ttyport = optarg; continue; case 's': socket_pathname = optarg; sopt++; continue; case 'w': rvinterf_wopt = optarg; continue; case '?': default: /* error msg already printed */ exit(ERROR_USAGE); } if (rvinterf_ttyport) { if (sopt) { fprintf(stderr, "%s error: -p and -s options are mutually exclusive\n", argv[0]); exit(ERROR_USAGE); } launch_rvinterf(); } else { if (rvinterf_Bopt || rvinterf_lopt || rvinterf_wopt) { fprintf(stderr, "%s error: -B, -l and -w options are meaningful only when launching rvinterf\n", argv[0]); exit(ERROR_USAGE); } connect_local_socket(); } return single_op_main(argc - optind, argv + optind); }