1 /* Simulator option handling.
2 Copyright (C) 1996-2018 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
5 This file is part of GDB, the GNU debugger.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
32 #include "libiberty.h"
33 #include "sim-options.h"
35 #include "sim-assert.h"
40 /* Add a set of options to the simulator.
41 TABLE is an array of OPTIONS terminated by a NULL `opt.name' entry.
42 This is intended to be called by modules in their `install' handler. */
45 sim_add_option_table (SIM_DESC sd, sim_cpu *cpu, const OPTION *table)
47 struct option_list *ol = ((struct option_list *)
48 xmalloc (sizeof (struct option_list)));
50 /* Note: The list is constructed in the reverse order we're called so
51 later calls will override earlier ones (in case that ever happens).
52 This is the intended behaviour. */
56 ol->next = CPU_OPTIONS (cpu);
58 CPU_OPTIONS (cpu) = ol;
62 ol->next = STATE_OPTIONS (sd);
64 STATE_OPTIONS (sd) = ol;
70 /* Standard option table.
71 Modules may specify additional ones.
72 The caller of sim_parse_args may also specify additional options
73 by calling sim_add_option_table first. */
75 static DECLARE_OPTION_HANDLER (standard_option_handler);
77 /* FIXME: We shouldn't print in --help output options that aren't usable.
78 Some fine tuning will be necessary. One can either move less general
79 options to another table or use a HAVE_FOO macro to ifdef out unavailable
82 /* ??? One might want to conditionally compile out the entries that
83 aren't enabled. There's a distinction, however, between options a
84 simulator can't support and options that haven't been configured in.
85 Certainly options a simulator can't support shouldn't appear in the
86 output of --help. Whether the same thing applies to options that haven't
87 been configured in or not isn't something I can get worked up over.
88 [Note that conditionally compiling them out might simply involve moving
89 the option to another table.]
90 If you decide to conditionally compile them out as well, delete this
91 comment and add a comment saying that that is the rule. */
94 OPTION_DEBUG_INSN = OPTION_START,
99 OPTION_ARCHITECTURE_INFO,
112 static const OPTION standard_options[] =
114 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
115 'v', NULL, "Verbose output",
116 standard_option_handler, NULL },
118 { {"endian", required_argument, NULL, OPTION_ENDIAN},
119 'E', "big|little", "Set endianness",
120 standard_option_handler, NULL },
122 /* This option isn't supported unless all choices are supported in keeping
123 with the goal of not printing in --help output things the simulator can't
124 do [as opposed to things that just haven't been configured in]. */
125 { {"environment", required_argument, NULL, OPTION_ENVIRONMENT},
126 '\0', "user|virtual|operating", "Set running environment",
127 standard_option_handler },
129 { {"alignment", required_argument, NULL, OPTION_ALIGNMENT},
130 '\0', "strict|nonstrict|forced", "Set memory access alignment",
131 standard_option_handler },
133 { {"debug", no_argument, NULL, OPTION_DEBUG},
134 'D', NULL, "Print debugging messages",
135 standard_option_handler },
136 { {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN},
137 '\0', NULL, "Print instruction debugging messages",
138 standard_option_handler },
139 { {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE},
140 '\0', "FILE NAME", "Specify debugging output file",
141 standard_option_handler },
143 { {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
144 '\0', "COMMAND", ""/*undocumented*/,
145 standard_option_handler },
147 { {"help", no_argument, NULL, OPTION_HELP},
148 'H', NULL, "Print help information",
149 standard_option_handler },
150 { {"version", no_argument, NULL, OPTION_VERSION},
151 '\0', NULL, "Print version information",
152 standard_option_handler },
154 { {"architecture", required_argument, NULL, OPTION_ARCHITECTURE},
155 '\0', "MACHINE", "Specify the architecture to use",
156 standard_option_handler },
157 { {"architecture-info", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
158 '\0', NULL, "List supported architectures",
159 standard_option_handler },
160 { {"info-architecture", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
162 standard_option_handler },
164 { {"target", required_argument, NULL, OPTION_TARGET},
165 '\0', "BFDNAME", "Specify the object-code format for the object files",
166 standard_option_handler },
168 { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
170 "Use VMA or LMA addresses when loading image (default LMA)",
171 standard_option_handler, "load-{lma,vma}" },
172 { {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
173 '\0', NULL, "", standard_option_handler, "" },
175 { {"sysroot", required_argument, NULL, OPTION_SYSROOT},
177 "Root for system calls with absolute file-names and cwd at start",
178 standard_option_handler, NULL },
180 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL, NULL }
184 standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
185 char *arg, int is_command)
189 switch ((STANDARD_OPTIONS) opt)
192 STATE_VERBOSE_P (sd) = 1;
196 if (strcmp (arg, "big") == 0)
198 if (WITH_TARGET_BYTE_ORDER == BFD_ENDIAN_LITTLE)
200 sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
203 /* FIXME:wip: Need to set something in STATE_CONFIG. */
204 current_target_byte_order = BFD_ENDIAN_BIG;
206 else if (strcmp (arg, "little") == 0)
208 if (WITH_TARGET_BYTE_ORDER == BFD_ENDIAN_BIG)
210 sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
213 /* FIXME:wip: Need to set something in STATE_CONFIG. */
214 current_target_byte_order = BFD_ENDIAN_LITTLE;
218 sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
223 case OPTION_ENVIRONMENT:
224 if (strcmp (arg, "user") == 0)
225 STATE_ENVIRONMENT (sd) = USER_ENVIRONMENT;
226 else if (strcmp (arg, "virtual") == 0)
227 STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT;
228 else if (strcmp (arg, "operating") == 0)
229 STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
232 sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg);
235 if (WITH_ENVIRONMENT != ALL_ENVIRONMENT
236 && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd))
239 switch (WITH_ENVIRONMENT)
241 case USER_ENVIRONMENT: type = "user"; break;
242 case VIRTUAL_ENVIRONMENT: type = "virtual"; break;
243 case OPERATING_ENVIRONMENT: type = "operating"; break;
245 sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n",
251 case OPTION_ALIGNMENT:
252 if (strcmp (arg, "strict") == 0)
254 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT)
256 current_alignment = STRICT_ALIGNMENT;
260 else if (strcmp (arg, "nonstrict") == 0)
262 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT)
264 current_alignment = NONSTRICT_ALIGNMENT;
268 else if (strcmp (arg, "forced") == 0)
270 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT)
272 current_alignment = FORCED_ALIGNMENT;
278 sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg);
281 switch (WITH_ALIGNMENT)
283 case STRICT_ALIGNMENT:
284 sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n");
286 case NONSTRICT_ALIGNMENT:
287 sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n");
289 case FORCED_ALIGNMENT:
290 sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n");
297 sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
300 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
301 for (i = 0; i < MAX_DEBUG_VALUES; ++i)
302 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1;
306 case OPTION_DEBUG_INSN :
308 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
311 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
312 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
316 case OPTION_DEBUG_FILE :
318 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
321 FILE *f = fopen (arg, "w");
325 sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
328 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
329 CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
333 case OPTION_DO_COMMAND:
334 sim_do_command (sd, arg);
337 case OPTION_ARCHITECTURE:
339 const struct bfd_arch_info *ap = bfd_scan_arch (arg);
342 sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg);
345 STATE_ARCHITECTURE (sd) = ap;
349 case OPTION_ARCHITECTURE_INFO:
351 const char **list = bfd_arch_list ();
355 sim_io_printf (sd, "Possible architectures:");
356 for (lp = list; *lp != NULL; lp++)
357 sim_io_printf (sd, " %s", *lp);
358 sim_io_printf (sd, "\n");
365 STATE_TARGET (sd) = xstrdup (arg);
369 case OPTION_LOAD_LMA:
371 STATE_LOAD_AT_LMA_P (sd) = 1;
375 case OPTION_LOAD_VMA:
377 STATE_LOAD_AT_LMA_P (sd) = 0;
382 sim_print_help (sd, is_command);
383 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
385 /* FIXME: 'twould be nice to do something similar if gdb. */
389 sim_io_printf (sd, "GNU simulator %s%s\n", PKGVERSION, version);
390 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
395 /* Don't leak memory in the odd event that there's lots of
396 --sysroot=... options. We treat "" specially since this
397 is the statically initialized value and cannot free it. */
398 if (simulator_sysroot[0] != '\0')
399 free (simulator_sysroot);
401 simulator_sysroot = xstrdup (arg);
403 simulator_sysroot = "";
410 /* Add the standard option list to the simulator. */
413 standard_install (SIM_DESC sd)
415 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
416 if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK)
418 STATE_LOAD_AT_LMA_P (sd) = 1;
422 /* Return non-zero if arg is a duplicate argument.
423 If ARG is NULL, initialize. */
425 #define ARG_HASH_SIZE 97
426 #define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
429 dup_arg_p (const char *arg)
432 static const char **arg_table = NULL;
436 if (arg_table == NULL)
437 arg_table = (const char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
438 memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
442 hash = ARG_HASH (arg);
443 while (arg_table[hash] != NULL)
445 if (strcmp (arg, arg_table[hash]) == 0)
447 /* We assume there won't be more than ARG_HASH_SIZE arguments so we
448 don't check if the table is full. */
449 if (++hash == ARG_HASH_SIZE)
452 arg_table[hash] = arg;
456 /* Called by sim_open to parse the arguments. */
459 sim_parse_args (SIM_DESC sd, char * const *argv)
461 int c, i, argc, num_opts, save_opterr;
462 char *p, *short_options;
463 /* The `val' option struct entry is dynamically assigned for options that
464 only come in the long form. ORIG_VAL is used to get the original value
467 struct option *lp, *long_options;
468 const struct option_list *ol;
470 OPTION_HANDLER **handlers;
472 SIM_RC result = SIM_RC_OK;
474 /* Count the number of arguments. */
475 argc = countargv (argv);
477 /* Count the number of options. */
479 for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
480 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
482 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
483 for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next)
484 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
487 /* Initialize duplicate argument checker. */
488 (void) dup_arg_p (NULL);
490 /* Build the option table for getopt. */
492 long_options = NZALLOC (struct option, num_opts + 1);
494 short_options = NZALLOC (char, num_opts * 3 + 1);
496 handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts);
497 orig_val = NZALLOC (int, OPTION_START + num_opts);
498 opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts);
500 /* Set '+' as first char so argument permutation isn't done. This
501 is done to stop getopt_long returning options that appear after
502 the target program. Such options should be passed unchanged into
503 the program image. */
506 for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
507 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
509 if (dup_arg_p (opt->opt.name))
511 if (opt->shortopt != 0)
513 *p++ = opt->shortopt;
514 if (opt->opt.has_arg == required_argument)
516 else if (opt->opt.has_arg == optional_argument)
517 { *p++ = ':'; *p++ = ':'; }
518 handlers[(unsigned char) opt->shortopt] = opt->handler;
519 if (opt->opt.val != 0)
520 orig_val[(unsigned char) opt->shortopt] = opt->opt.val;
522 orig_val[(unsigned char) opt->shortopt] = opt->shortopt;
524 if (opt->opt.name != NULL)
527 /* Dynamically assign `val' numbers for long options. */
529 handlers[lp->val] = opt->handler;
530 orig_val[lp->val] = opt->opt.val;
531 opt_cpu[lp->val] = NULL;
536 for (c = 0; c < MAX_NR_PROCESSORS; ++c)
538 sim_cpu *cpu = STATE_CPU (sd, c);
539 for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next)
540 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
542 #if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down
543 on the need for dup_arg_p checking. Maybe in the future it'll be
544 needed so this is just commented out, and not deleted. */
545 if (dup_arg_p (opt->opt.name))
548 /* Don't allow short versions of cpu specific options for now. */
549 if (opt->shortopt != 0)
551 sim_io_eprintf (sd, "internal error, short cpu specific option");
552 result = SIM_RC_FAIL;
555 if (opt->opt.name != NULL)
559 /* Prepend --<cpuname>- to the option. */
560 if (asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name) < 0)
562 sim_io_eprintf (sd, "internal error, out of memory");
563 result = SIM_RC_FAIL;
567 /* Dynamically assign `val' numbers for long options. */
569 handlers[lp->val] = opt->handler;
570 orig_val[lp->val] = opt->opt.val;
571 opt_cpu[lp->val] = cpu;
577 /* Terminate the short and long option lists. */
581 /* Ensure getopt is initialized. */
584 /* Do not lot getopt throw errors for us. But don't mess with the state for
585 any callers higher up by saving/restoring it. */
586 save_opterr = opterr;
593 optc = getopt_long (argc, argv, short_options, long_options, &longind);
596 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
597 STATE_PROG_ARGV (sd) = dupargv (argv + optind);
602 /* If getopt rejects a short option, optopt is set to the bad char.
603 If it rejects a long option, we have to look at optind. In the
604 short option case, argv could be multiple short options. */
610 sprintf (optbuf, "-%c", optopt);
614 badopt = argv[optind - 1];
617 "%s: unrecognized option '%s'\n"
618 "Use --help for a complete list of options.\n",
619 STATE_MY_NAME (sd), badopt);
621 result = SIM_RC_FAIL;
625 if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
627 result = SIM_RC_FAIL;
632 opterr = save_opterr;
635 free (short_options);
642 /* Utility of sim_print_help to print a list of option tables. */
645 print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command)
649 for ( ; ol != NULL; ol = ol->next)
650 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
652 const int indent = 30;
656 if (dup_arg_p (opt->opt.name))
659 if (opt->doc == NULL)
662 if (opt->doc_name != NULL && opt->doc_name [0] == '\0')
665 sim_io_printf (sd, " ");
670 /* list any short options (aliases) for the current OPT */
676 if (o->shortopt != '\0')
678 sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
679 len += (comma ? 2 : 0) + 2;
682 if (o->opt.has_arg == optional_argument)
684 sim_io_printf (sd, "[%s]", o->arg);
685 len += 1 + strlen (o->arg) + 1;
689 sim_io_printf (sd, " %s", o->arg);
690 len += 1 + strlen (o->arg);
697 while (OPTION_VALID_P (o) && o->doc == NULL);
700 /* list any long options (aliases) for the current OPT */
705 const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL;
706 if (o->doc_name != NULL)
712 sim_io_printf (sd, "%s%s%s%s%s",
714 is_command ? "" : "--",
715 cpu ? cpu_prefix : "",
718 len += ((comma ? 2 : 0)
719 + (is_command ? 0 : 2)
723 if (o->opt.has_arg == optional_argument)
725 sim_io_printf (sd, "[=%s]", o->arg);
726 len += 2 + strlen (o->arg) + 1;
730 sim_io_printf (sd, " %s", o->arg);
731 len += 1 + strlen (o->arg);
738 while (OPTION_VALID_P (o) && o->doc == NULL);
742 sim_io_printf (sd, "\n%*s", indent, "");
745 sim_io_printf (sd, "%*s", indent - len, "");
747 /* print the description, word wrap long lines */
749 const char *chp = opt->doc;
750 unsigned doc_width = 80 - indent;
751 while (strlen (chp) >= doc_width) /* some slack */
753 const char *end = chp + doc_width - 1;
754 while (end > chp && !isspace (*end))
757 end = chp + doc_width - 1;
758 /* The cast should be ok - its distances between to
759 points in a string. */
760 sim_io_printf (sd, "%.*s\n%*s", (int) (end - chp), chp, indent,
763 while (isspace (*chp) && *chp != '\0')
766 sim_io_printf (sd, "%s\n", chp);
771 /* Print help messages for the options. */
774 sim_print_help (SIM_DESC sd, int is_command)
776 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
777 sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
780 /* Initialize duplicate argument checker. */
781 (void) dup_arg_p (NULL);
783 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
784 sim_io_printf (sd, "Options:\n");
786 sim_io_printf (sd, "Commands:\n");
788 print_help (sd, NULL, STATE_OPTIONS (sd), is_command);
789 sim_io_printf (sd, "\n");
791 /* Print cpu-specific options. */
795 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
797 sim_cpu *cpu = STATE_CPU (sd, i);
798 if (CPU_OPTIONS (cpu) == NULL)
800 sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu));
801 print_help (sd, cpu, CPU_OPTIONS (cpu), is_command);
802 sim_io_printf (sd, "\n");
806 sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n",
807 STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command");
808 sim_io_printf (sd, " may not be applicable\n");
810 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
812 sim_io_printf (sd, "\n");
813 sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
814 sim_io_printf (sd, " Note: Very few simulators support this.\n");
818 /* Utility of sim_args_command to find the closest match for a command.
819 Commands that have "-" in them can be specified as separate words.
820 e.g. sim memory-region 0x800000,0x4000
821 or sim memory region 0x800000,0x4000
822 If CPU is non-null, use its option table list, otherwise use the main one.
823 *PARGI is where to start looking in ARGV. It is updated to point past
826 static const OPTION *
827 find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi)
829 const struct option_list *ol;
831 /* most recent option match */
832 const OPTION *matching_opt = NULL;
833 int matching_argi = -1;
836 ol = CPU_OPTIONS (cpu);
838 ol = STATE_OPTIONS (sd);
840 /* Skip passed elements specified by *PARGI. */
843 for ( ; ol != NULL; ol = ol->next)
844 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
847 const char *name = opt->opt.name;
850 while (argv [argi] != NULL
851 && strncmp (name, argv [argi], strlen (argv [argi])) == 0)
853 name = &name [strlen (argv[argi])];
856 /* leading match ...<a-b-c>-d-e-f - continue search */
857 name ++; /* skip `-' */
861 else if (name [0] == '\0')
863 /* exact match ...<a-b-c-d-e-f> - better than before? */
864 if (argi > matching_argi)
866 matching_argi = argi;
876 *pargi = matching_argi;
881 complete_option_list (char **ret, size_t *cnt, const struct option_list *ol,
882 const char *text, const char *word)
884 const OPTION *opt = NULL;
886 size_t len = strlen (word);
888 for ( ; ol != NULL; ol = ol->next)
889 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
891 const char *name = opt->opt.name;
893 /* A long option to match against? */
897 /* Does this option actually match? */
898 if (strncmp (name, word, len))
901 ret = xrealloc (ret, ++*cnt * sizeof (ret[0]));
902 ret[*cnt - 2] = xstrdup (name);
908 /* All leading text is stored in @text, while the current word being
909 completed is stored in @word. Trailing text of @word is not. */
912 sim_complete_command (SIM_DESC sd, const char *text, const char *word)
918 /* Only complete first word for now. */
922 cpu = STATE_CPU (sd, 0);
924 ret = complete_option_list (ret, &cnt, CPU_OPTIONS (cpu), text, word);
925 ret = complete_option_list (ret, &cnt, STATE_OPTIONS (sd), text, word);
933 sim_args_command (SIM_DESC sd, const char *cmd)
935 /* something to do? */
937 return SIM_RC_OK; /* FIXME - perhaps help would be better */
941 /* user specified -<opt> ... form? */
942 char **argv = buildargv (cmd);
943 SIM_RC rc = sim_parse_args (sd, argv);
949 char **argv = buildargv (cmd);
950 const OPTION *matching_opt = NULL;
954 if (argv [0] == NULL)
957 return SIM_RC_OK; /* FIXME - perhaps help would be better */
960 /* First check for a cpu selector. */
962 char *cpu_name = xstrdup (argv[0]);
963 char *hyphen = strchr (cpu_name, '-');
966 cpu = sim_cpu_lookup (sd, cpu_name);
969 /* If <cpuname>-<command>, point argv[0] at <command>. */
973 argv[0] += hyphen - cpu_name + 1;
977 matching_opt = find_match (sd, cpu, argv, &matching_argi);
978 /* If hyphen found restore argv[0]. */
980 argv[0] -= hyphen - cpu_name + 1;
985 /* If that failed, try the main table. */
986 if (matching_opt == NULL)
989 matching_opt = find_match (sd, NULL, argv, &matching_argi);
992 if (matching_opt != NULL)
994 switch (matching_opt->opt.has_arg)
997 if (argv [matching_argi + 1] == NULL)
998 matching_opt->handler (sd, cpu, matching_opt->opt.val,
999 NULL, 1/*is_command*/);
1001 sim_io_eprintf (sd, "Command `%s' takes no arguments\n",
1002 matching_opt->opt.name);
1004 case optional_argument:
1005 if (argv [matching_argi + 1] == NULL)
1006 matching_opt->handler (sd, cpu, matching_opt->opt.val,
1007 NULL, 1/*is_command*/);
1008 else if (argv [matching_argi + 2] == NULL)
1009 matching_opt->handler (sd, cpu, matching_opt->opt.val,
1010 argv [matching_argi + 1], 1/*is_command*/);
1012 sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n",
1013 matching_opt->opt.name);
1015 case required_argument:
1016 if (argv [matching_argi + 1] == NULL)
1017 sim_io_eprintf (sd, "Command `%s' requires an argument\n",
1018 matching_opt->opt.name);
1019 else if (argv [matching_argi + 2] == NULL)
1020 matching_opt->handler (sd, cpu, matching_opt->opt.val,
1021 argv [matching_argi + 1], 1/*is_command*/);
1023 sim_io_eprintf (sd, "Command `%s' requires only one argument\n",
1024 matching_opt->opt.name);
1033 /* didn't find anything that remotly matched */