FreeCalypso > hg > freecalypso-tools
annotate 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> |
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date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | 9925fba699be |
children | e40bb5a6c6b9 |
rev | line source |
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1 /* |
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2 * This utility uses one of TI's Test Mode memory read commands (either TM3 or |
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3 * ETM) in a synchronous manner (using our etmsync infrastructure) to read the |
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4 * memory of a GSM device running a compatible fw version. It supplants |
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5 * the former fc-olddump tool. |
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6 */ |
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7 |
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8 #include <sys/types.h> |
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9 #include <stdio.h> |
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10 #include <stdlib.h> |
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11 #include <string.h> |
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12 #include <strings.h> |
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13 #include <unistd.h> |
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14 #include "etm.h" |
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15 #include "tm3.h" |
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16 #include "localtypes.h" |
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17 #include "exitcodes.h" |
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18 |
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19 int use_etm; |
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20 |
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21 extern char *socket_pathname; |
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22 extern char *rvinterf_ttyport, *rvinterf_Bopt, *rvinterf_lopt, *rvinterf_wopt; |
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23 |
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24 single_op_main(argc, argv) |
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25 char **argv; |
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26 { |
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27 u32 addr, len, chunk, maxchunk; |
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28 char buf[MAX_MEMREAD_BYTES]; |
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29 FILE *outf; |
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30 int rc; |
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31 |
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32 if (argc != 3) { |
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33 fprintf(stderr, |
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34 "usage: fc-memdump [options] start-addr dump-length binfile\n"); |
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35 exit(ERROR_USAGE); |
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36 } |
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37 addr = strtoul(argv[0], 0, 16); |
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38 len = strtoul(argv[1], 0, 16); |
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39 outf = fopen(argv[2], "w"); |
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40 if (!outf) { |
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41 perror(argv[2]); |
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42 exit(ERROR_UNIX); |
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43 } |
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44 if (use_etm) |
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45 maxchunk = MAX_MEMREAD_BYTES; |
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46 else |
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47 maxchunk = TM3_MEMREAD_MAX; |
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48 while (len) { |
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49 chunk = len; |
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50 if (chunk > maxchunk) |
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51 chunk = maxchunk; |
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52 if (use_etm) |
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53 rc = do_memory_read(addr, buf, chunk); |
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54 else |
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55 rc = do_memory_read_tm3(addr, buf, chunk); |
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56 if (rc) |
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57 exit(rc); |
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58 fwrite(buf, 1, chunk, outf); |
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59 putchar('.'); |
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60 fflush(stdout); |
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61 addr += chunk; |
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62 len -= chunk; |
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63 } |
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64 putchar('\n'); |
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65 fclose(outf); |
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66 exit(0); |
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67 } |
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68 |
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69 main(argc, argv) |
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70 char **argv; |
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71 { |
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72 extern int optind; |
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73 extern char *optarg; |
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74 int c, sopt = 0; |
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75 |
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76 while ((c = getopt(argc, argv, "B:el:p:s:w:")) != EOF) |
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77 switch (c) { |
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78 case 'B': |
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79 rvinterf_Bopt = optarg; |
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80 continue; |
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81 case 'e': |
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82 use_etm++; |
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83 continue; |
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84 case 'l': |
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85 rvinterf_lopt = optarg; |
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86 continue; |
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87 case 'p': |
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88 rvinterf_ttyport = optarg; |
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89 continue; |
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90 case 's': |
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91 socket_pathname = optarg; |
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92 sopt++; |
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93 continue; |
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94 case 'w': |
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95 rvinterf_wopt = optarg; |
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96 continue; |
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97 case '?': |
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98 default: |
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99 /* error msg already printed */ |
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100 exit(ERROR_USAGE); |
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101 } |
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102 if (rvinterf_ttyport) { |
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103 if (sopt) { |
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104 fprintf(stderr, |
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105 "%s error: -p and -s options are mutually exclusive\n", |
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106 argv[0]); |
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107 exit(ERROR_USAGE); |
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108 } |
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109 launch_rvinterf(); |
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110 } else { |
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111 if (rvinterf_Bopt || rvinterf_lopt || rvinterf_wopt) { |
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112 fprintf(stderr, |
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113 "%s error: -B, -l and -w options are meaningful only when launching rvinterf\n", |
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114 argv[0]); |
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115 exit(ERROR_USAGE); |
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116 } |
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117 connect_local_socket(); |
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118 } |
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119 |
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120 return single_op_main(argc - optind, argv + optind); |
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121 } |