diff options
Diffstat (limited to 'sim/common/sim-options.c')
| -rw-r--r-- | sim/common/sim-options.c | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sim/common/sim-options.c b/sim/common/sim-options.c index 88663f7..f662b73 100644 --- a/sim/common/sim-options.c +++ b/sim/common/sim-options.c @@ -460,7 +460,7 @@ dup_arg_p (const char *arg) SIM_RC sim_parse_args (SIM_DESC sd, char **argv) { - int c, i, argc, num_opts; + int c, i, argc, num_opts, save_opterr; char *p, *short_options; /* The `val' option struct entry is dynamically assigned for options that only come in the long form. ORIG_VAL is used to get the original value @@ -583,6 +583,11 @@ sim_parse_args (SIM_DESC sd, char **argv) /* Ensure getopt is initialized. */ optind = 0; + /* Do not lot getopt throw errors for us. But don't mess with the state for + any callers higher up by saving/restoring it. */ + save_opterr = opterr; + opterr = 0; + while (1) { int longind, optc; @@ -596,6 +601,25 @@ sim_parse_args (SIM_DESC sd, char **argv) } if (optc == '?') { + /* If getopt rejects a short option, optopt is set to the bad char. + If it rejects a long option, we have to look at optind. In the + short option case, argv could be multiple short options. */ + const char *badopt; + char optbuf[3]; + + if (optopt) + { + sprintf (optbuf, "-%c", optopt); + badopt = optbuf; + } + else + badopt = argv[optind - 1]; + + sim_io_eprintf (sd, + "%s: unrecognized option: %s\n" + "Use --help for a complete list of options.\n", + STATE_MY_NAME (sd), badopt); + result = SIM_RC_FAIL; break; } @@ -607,6 +631,8 @@ sim_parse_args (SIM_DESC sd, char **argv) } } + opterr = save_opterr; + free (long_options); free (short_options); free (handlers); |