1 /* Simulator option handling.
2 Copyright (C) 1996, 1997, 2004 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 2, or (at your option)
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 along
18 with this program; if not, write to the Free Software Foundation, Inc.,
19 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
33 #include "libiberty.h"
34 #include "sim-options.h"
36 #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,
103 #if defined (SIM_HAVE_BIENDIAN)
107 #ifdef SIM_HAVE_FLATMEM
111 #ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
121 static const OPTION standard_options[] =
123 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
124 'v', NULL, "Verbose output",
125 standard_option_handler },
127 #if defined (SIM_HAVE_BIENDIAN) /* ??? && WITH_TARGET_BYTE_ORDER == 0 */
128 { {"endian", required_argument, NULL, OPTION_ENDIAN},
129 'E', "big|little", "Set endianness",
130 standard_option_handler },
133 #ifdef SIM_HAVE_ENVIRONMENT
134 /* This option isn't supported unless all choices are supported in keeping
135 with the goal of not printing in --help output things the simulator can't
136 do [as opposed to things that just haven't been configured in]. */
137 { {"environment", required_argument, NULL, OPTION_ENVIRONMENT},
138 '\0', "user|virtual|operating", "Set running environment",
139 standard_option_handler },
142 { {"alignment", required_argument, NULL, OPTION_ALIGNMENT},
143 '\0', "strict|nonstrict|forced", "Set memory access alignment",
144 standard_option_handler },
146 { {"debug", no_argument, NULL, OPTION_DEBUG},
147 'D', NULL, "Print debugging messages",
148 standard_option_handler },
149 { {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN},
150 '\0', NULL, "Print instruction debugging messages",
151 standard_option_handler },
152 { {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE},
153 '\0', "FILE NAME", "Specify debugging output file",
154 standard_option_handler },
156 #ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
157 { {"h8300h", no_argument, NULL, OPTION_H8300H},
158 'h', NULL, "Indicate the CPU is H8/300H",
159 standard_option_handler },
160 { {"h8300s", no_argument, NULL, OPTION_H8300S},
161 'S', NULL, "Indicate the CPU is H8S",
162 standard_option_handler },
163 { {"h8300sx", no_argument, NULL, OPTION_H8300SX},
164 'x', NULL, "Indicate the CPU is H8SX",
165 standard_option_handler },
168 #ifdef SIM_HAVE_FLATMEM
169 { {"mem-size", required_argument, NULL, OPTION_MEM_SIZE},
170 'm', "MEMORY SIZE", "Specify memory size",
171 standard_option_handler },
174 { {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
175 '\0', "COMMAND", ""/*undocumented*/,
176 standard_option_handler },
178 { {"help", no_argument, NULL, OPTION_HELP},
179 'H', NULL, "Print help information",
180 standard_option_handler },
182 { {"architecture", required_argument, NULL, OPTION_ARCHITECTURE},
183 '\0', "MACHINE", "Specify the architecture to use",
184 standard_option_handler },
185 { {"architecture-info", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
186 '\0', NULL, "List supported architectures",
187 standard_option_handler },
188 { {"info-architecture", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
190 standard_option_handler },
192 { {"target", required_argument, NULL, OPTION_TARGET},
193 '\0', "BFDNAME", "Specify the object-code format for the object files",
194 standard_option_handler },
196 #ifdef SIM_HANDLES_LMA
197 { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
200 "Use VMA or LMA addresses when loading image (default LMA)",
202 "Use VMA or LMA addresses when loading image (default VMA)",
204 standard_option_handler, "load-{lma,vma}" },
205 { {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
206 '\0', NULL, "", standard_option_handler, "" },
209 { {"sysroot", required_argument, NULL, OPTION_SYSROOT},
211 "Root for system calls with absolute file-names and cwd at start",
212 standard_option_handler },
214 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
218 standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
219 char *arg, int is_command)
223 switch ((STANDARD_OPTIONS) opt)
226 STATE_VERBOSE_P (sd) = 1;
229 #ifdef SIM_HAVE_BIENDIAN
231 if (strcmp (arg, "big") == 0)
233 if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN)
235 sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
238 /* FIXME:wip: Need to set something in STATE_CONFIG. */
239 current_target_byte_order = BIG_ENDIAN;
241 else if (strcmp (arg, "little") == 0)
243 if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN)
245 sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
248 /* FIXME:wip: Need to set something in STATE_CONFIG. */
249 current_target_byte_order = LITTLE_ENDIAN;
253 sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
259 case OPTION_ENVIRONMENT:
260 if (strcmp (arg, "user") == 0)
261 STATE_ENVIRONMENT (sd) = USER_ENVIRONMENT;
262 else if (strcmp (arg, "virtual") == 0)
263 STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT;
264 else if (strcmp (arg, "operating") == 0)
265 STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
268 sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg);
271 if (WITH_ENVIRONMENT != ALL_ENVIRONMENT
272 && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd))
275 switch (WITH_ENVIRONMENT)
277 case USER_ENVIRONMENT: type = "user"; break;
278 case VIRTUAL_ENVIRONMENT: type = "virtual"; break;
279 case OPERATING_ENVIRONMENT: type = "operating"; break;
281 sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n",
287 case OPTION_ALIGNMENT:
288 if (strcmp (arg, "strict") == 0)
290 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT)
292 current_alignment = STRICT_ALIGNMENT;
296 else if (strcmp (arg, "nonstrict") == 0)
298 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT)
300 current_alignment = NONSTRICT_ALIGNMENT;
304 else if (strcmp (arg, "forced") == 0)
306 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT)
308 current_alignment = FORCED_ALIGNMENT;
314 sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg);
317 switch (WITH_ALIGNMENT)
319 case STRICT_ALIGNMENT:
320 sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n");
322 case NONSTRICT_ALIGNMENT:
323 sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n");
325 case FORCED_ALIGNMENT:
326 sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n");
333 sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
336 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
337 for (i = 0; i < MAX_DEBUG_VALUES; ++i)
338 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1;
342 case OPTION_DEBUG_INSN :
344 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
347 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
348 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
352 case OPTION_DEBUG_FILE :
354 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
357 FILE *f = fopen (arg, "w");
361 sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
364 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
365 CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
369 #ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */
371 set_h8300h (bfd_mach_h8300h);
374 set_h8300h (bfd_mach_h8300s);
377 set_h8300h (bfd_mach_h8300sx);
381 #ifdef SIM_HAVE_FLATMEM
382 case OPTION_MEM_SIZE:
384 unsigned long ul = strtol (arg, NULL, 0);
385 /* 16384: some minimal amount */
386 if (! isdigit (arg[0]) || ul < 16384)
388 sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
391 STATE_MEM_SIZE (sd) = ul;
396 case OPTION_DO_COMMAND:
397 sim_do_command (sd, arg);
400 case OPTION_ARCHITECTURE:
402 const struct bfd_arch_info *ap = bfd_scan_arch (arg);
405 sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg);
408 STATE_ARCHITECTURE (sd) = ap;
412 case OPTION_ARCHITECTURE_INFO:
414 const char **list = bfd_arch_list();
418 sim_io_printf (sd, "Possible architectures:");
419 for (lp = list; *lp != NULL; lp++)
420 sim_io_printf (sd, " %s", *lp);
421 sim_io_printf (sd, "\n");
428 STATE_TARGET (sd) = xstrdup (arg);
432 case OPTION_LOAD_LMA:
434 STATE_LOAD_AT_LMA_P (sd) = 1;
438 case OPTION_LOAD_VMA:
440 STATE_LOAD_AT_LMA_P (sd) = 0;
445 sim_print_help (sd, is_command);
446 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
448 /* FIXME: 'twould be nice to do something similar if gdb. */
452 /* Don't leak memory in the odd event that there's lots of
453 --sysroot=... options. */
454 if (simulator_sysroot[0] != '\0' && arg[0] != '\0')
455 free (simulator_sysroot);
456 simulator_sysroot = xstrdup (arg);
463 /* Add the standard option list to the simulator. */
466 standard_install (SIM_DESC sd)
468 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
469 if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK)
471 #ifdef SIM_HANDLES_LMA
472 STATE_LOAD_AT_LMA_P (sd) = SIM_HANDLES_LMA;
477 /* Return non-zero if arg is a duplicate argument.
478 If ARG is NULL, initialize. */
480 #define ARG_HASH_SIZE 97
481 #define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
488 static char **arg_table = NULL;
492 if (arg_table == NULL)
493 arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
494 memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
498 hash = ARG_HASH (arg);
499 while (arg_table[hash] != NULL)
501 if (strcmp (arg, arg_table[hash]) == 0)
503 /* We assume there won't be more than ARG_HASH_SIZE arguments so we
504 don't check if the table is full. */
505 if (++hash == ARG_HASH_SIZE)
508 arg_table[hash] = arg;
512 /* Called by sim_open to parse the arguments. */
515 sim_parse_args (sd, argv)
519 int c, i, argc, num_opts;
520 char *p, *short_options;
521 /* The `val' option struct entry is dynamically assigned for options that
522 only come in the long form. ORIG_VAL is used to get the original value
525 struct option *lp, *long_options;
526 const struct option_list *ol;
528 OPTION_HANDLER **handlers;
530 SIM_RC result = SIM_RC_OK;
532 /* Count the number of arguments. */
533 for (argc = 0; argv[argc] != NULL; ++argc)
536 /* Count the number of options. */
538 for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
539 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
541 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
542 for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next)
543 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
546 /* Initialize duplicate argument checker. */
547 (void) dup_arg_p (NULL);
549 /* Build the option table for getopt. */
551 long_options = NZALLOC (struct option, num_opts + 1);
553 short_options = NZALLOC (char, num_opts * 3 + 1);
555 handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts);
556 orig_val = NZALLOC (int, OPTION_START + num_opts);
557 opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts);
559 /* Set '+' as first char so argument permutation isn't done. This
560 is done to stop getopt_long returning options that appear after
561 the target program. Such options should be passed unchanged into
562 the program image. */
565 for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
566 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
568 if (dup_arg_p (opt->opt.name))
570 if (opt->shortopt != 0)
572 *p++ = opt->shortopt;
573 if (opt->opt.has_arg == required_argument)
575 else if (opt->opt.has_arg == optional_argument)
576 { *p++ = ':'; *p++ = ':'; }
577 handlers[(unsigned char) opt->shortopt] = opt->handler;
578 if (opt->opt.val != 0)
579 orig_val[(unsigned char) opt->shortopt] = opt->opt.val;
581 orig_val[(unsigned char) opt->shortopt] = opt->shortopt;
583 if (opt->opt.name != NULL)
586 /* Dynamically assign `val' numbers for long options. */
588 handlers[lp->val] = opt->handler;
589 orig_val[lp->val] = opt->opt.val;
590 opt_cpu[lp->val] = NULL;
595 for (c = 0; c < MAX_NR_PROCESSORS; ++c)
597 sim_cpu *cpu = STATE_CPU (sd, c);
598 for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next)
599 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
601 #if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down
602 on the need for dup_arg_p checking. Maybe in the future it'll be
603 needed so this is just commented out, and not deleted. */
604 if (dup_arg_p (opt->opt.name))
607 /* Don't allow short versions of cpu specific options for now. */
608 if (opt->shortopt != 0)
610 sim_io_eprintf (sd, "internal error, short cpu specific option");
611 result = SIM_RC_FAIL;
614 if (opt->opt.name != NULL)
618 /* Prepend --<cpuname>- to the option. */
619 asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name);
621 /* Dynamically assign `val' numbers for long options. */
623 handlers[lp->val] = opt->handler;
624 orig_val[lp->val] = opt->opt.val;
625 opt_cpu[lp->val] = cpu;
631 /* Terminate the short and long option lists. */
635 /* Ensure getopt is initialized. */
642 optc = getopt_long (argc, argv, short_options, long_options, &longind);
645 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
646 STATE_PROG_ARGV (sd) = dupargv (argv + optind);
651 result = SIM_RC_FAIL;
655 if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
657 result = SIM_RC_FAIL;
662 zfree (long_options);
663 zfree (short_options);
670 /* Utility of sim_print_help to print a list of option tables. */
673 print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command)
677 for ( ; ol != NULL; ol = ol->next)
678 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
680 const int indent = 30;
684 if (dup_arg_p (opt->opt.name))
687 if (opt->doc == NULL)
690 if (opt->doc_name != NULL && opt->doc_name [0] == '\0')
693 sim_io_printf (sd, " ");
698 /* list any short options (aliases) for the current OPT */
704 if (o->shortopt != '\0')
706 sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
707 len += (comma ? 2 : 0) + 2;
710 if (o->opt.has_arg == optional_argument)
712 sim_io_printf (sd, "[%s]", o->arg);
713 len += 1 + strlen (o->arg) + 1;
717 sim_io_printf (sd, " %s", o->arg);
718 len += 1 + strlen (o->arg);
725 while (OPTION_VALID_P (o) && o->doc == NULL);
728 /* list any long options (aliases) for the current OPT */
733 const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL;
734 if (o->doc_name != NULL)
740 sim_io_printf (sd, "%s%s%s%s%s",
742 is_command ? "" : "--",
743 cpu ? cpu_prefix : "",
746 len += ((comma ? 2 : 0)
747 + (is_command ? 0 : 2)
751 if (o->opt.has_arg == optional_argument)
753 sim_io_printf (sd, "[=%s]", o->arg);
754 len += 2 + strlen (o->arg) + 1;
758 sim_io_printf (sd, " %s", o->arg);
759 len += 1 + strlen (o->arg);
766 while (OPTION_VALID_P (o) && o->doc == NULL);
770 sim_io_printf (sd, "\n%*s", indent, "");
773 sim_io_printf (sd, "%*s", indent - len, "");
775 /* print the description, word wrap long lines */
777 const char *chp = opt->doc;
778 unsigned doc_width = 80 - indent;
779 while (strlen (chp) >= doc_width) /* some slack */
781 const char *end = chp + doc_width - 1;
782 while (end > chp && !isspace (*end))
785 end = chp + doc_width - 1;
786 /* The cast should be ok - its distances between to
787 points in a string. */
788 sim_io_printf (sd, "%.*s\n%*s", (int) (end - chp), chp, indent,
791 while (isspace (*chp) && *chp != '\0')
794 sim_io_printf (sd, "%s\n", chp);
799 /* Print help messages for the options. */
802 sim_print_help (sd, is_command)
806 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
807 sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
810 /* Initialize duplicate argument checker. */
811 (void) dup_arg_p (NULL);
813 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
814 sim_io_printf (sd, "Options:\n");
816 sim_io_printf (sd, "Commands:\n");
818 print_help (sd, NULL, STATE_OPTIONS (sd), is_command);
819 sim_io_printf (sd, "\n");
821 /* Print cpu-specific options. */
825 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
827 sim_cpu *cpu = STATE_CPU (sd, i);
828 if (CPU_OPTIONS (cpu) == NULL)
830 sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu));
831 print_help (sd, cpu, CPU_OPTIONS (cpu), is_command);
832 sim_io_printf (sd, "\n");
836 sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n",
837 STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command");
838 sim_io_printf (sd, " may not be applicable\n");
840 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
842 sim_io_printf (sd, "\n");
843 sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
844 sim_io_printf (sd, " Note: Very few simulators support this.\n");
848 /* Utility of sim_args_command to find the closest match for a command.
849 Commands that have "-" in them can be specified as separate words.
850 e.g. sim memory-region 0x800000,0x4000
851 or sim memory region 0x800000,0x4000
852 If CPU is non-null, use its option table list, otherwise use the main one.
853 *PARGI is where to start looking in ARGV. It is updated to point past
856 static const OPTION *
857 find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi)
859 const struct option_list *ol;
861 /* most recent option match */
862 const OPTION *matching_opt = NULL;
863 int matching_argi = -1;
866 ol = CPU_OPTIONS (cpu);
868 ol = STATE_OPTIONS (sd);
870 /* Skip passed elements specified by *PARGI. */
873 for ( ; ol != NULL; ol = ol->next)
874 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
877 const char *name = opt->opt.name;
880 while (argv [argi] != NULL
881 && strncmp (name, argv [argi], strlen (argv [argi])) == 0)
883 name = &name [strlen (argv[argi])];
886 /* leading match ...<a-b-c>-d-e-f - continue search */
887 name ++; /* skip `-' */
891 else if (name [0] == '\0')
893 /* exact match ...<a-b-c-d-e-f> - better than before? */
894 if (argi > matching_argi)
896 matching_argi = argi;
906 *pargi = matching_argi;
911 sim_args_command (SIM_DESC sd, char *cmd)
913 /* something to do? */
915 return SIM_RC_OK; /* FIXME - perhaps help would be better */
919 /* user specified -<opt> ... form? */
920 char **argv = buildargv (cmd);
921 SIM_RC rc = sim_parse_args (sd, argv);
927 char **argv = buildargv (cmd);
928 const OPTION *matching_opt = NULL;
932 if (argv [0] == NULL)
933 return SIM_RC_OK; /* FIXME - perhaps help would be better */
935 /* First check for a cpu selector. */
937 char *cpu_name = xstrdup (argv[0]);
938 char *hyphen = strchr (cpu_name, '-');
941 cpu = sim_cpu_lookup (sd, cpu_name);
944 /* If <cpuname>-<command>, point argv[0] at <command>. */
948 argv[0] += hyphen - cpu_name + 1;
952 matching_opt = find_match (sd, cpu, argv, &matching_argi);
953 /* If hyphen found restore argv[0]. */
955 argv[0] -= hyphen - cpu_name + 1;
960 /* If that failed, try the main table. */
961 if (matching_opt == NULL)
964 matching_opt = find_match (sd, NULL, argv, &matching_argi);
967 if (matching_opt != NULL)
969 switch (matching_opt->opt.has_arg)
972 if (argv [matching_argi + 1] == NULL)
973 matching_opt->handler (sd, cpu, matching_opt->opt.val,
974 NULL, 1/*is_command*/);
976 sim_io_eprintf (sd, "Command `%s' takes no arguments\n",
977 matching_opt->opt.name);
979 case optional_argument:
980 if (argv [matching_argi + 1] == NULL)
981 matching_opt->handler (sd, cpu, matching_opt->opt.val,
982 NULL, 1/*is_command*/);
983 else if (argv [matching_argi + 2] == NULL)
984 matching_opt->handler (sd, cpu, matching_opt->opt.val,
985 argv [matching_argi + 1], 1/*is_command*/);
987 sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n",
988 matching_opt->opt.name);
990 case required_argument:
991 if (argv [matching_argi + 1] == NULL)
992 sim_io_eprintf (sd, "Command `%s' requires an argument\n",
993 matching_opt->opt.name);
994 else if (argv [matching_argi + 2] == NULL)
995 matching_opt->handler (sd, cpu, matching_opt->opt.val,
996 argv [matching_argi + 1], 1/*is_command*/);
998 sim_io_eprintf (sd, "Command `%s' requires only one argument\n",
999 matching_opt->opt.name);
1008 /* didn't find anything that remotly matched */