1 /* Simulator option handling.
2 Copyright (C) 1996, 1997 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. */
120 static const OPTION standard_options[] =
122 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
123 'v', NULL, "Verbose output",
124 standard_option_handler },
126 #if defined (SIM_HAVE_BIENDIAN) /* ??? && WITH_TARGET_BYTE_ORDER == 0 */
127 { {"endian", required_argument, NULL, OPTION_ENDIAN},
128 'E', "big|little", "Set endianness",
129 standard_option_handler },
132 #ifdef SIM_HAVE_ENVIRONMENT
133 /* This option isn't supported unless all choices are supported in keeping
134 with the goal of not printing in --help output things the simulator can't
135 do [as opposed to things that just haven't been configured in]. */
136 { {"environment", required_argument, NULL, OPTION_ENVIRONMENT},
137 '\0', "user|virtual|operating", "Set running environment",
138 standard_option_handler },
141 { {"alignment", required_argument, NULL, OPTION_ALIGNMENT},
142 '\0', "strict|nonstrict|forced", "Set memory access alignment",
143 standard_option_handler },
145 { {"debug", no_argument, NULL, OPTION_DEBUG},
146 'D', NULL, "Print debugging messages",
147 standard_option_handler },
148 { {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN},
149 '\0', NULL, "Print instruction debugging messages",
150 standard_option_handler },
151 { {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE},
152 '\0', "FILE NAME", "Specify debugging output file",
153 standard_option_handler },
155 #ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
156 { {"h8300h", no_argument, NULL, OPTION_H8300H},
157 'h', NULL, "Indicate the CPU is h8/300h",
158 standard_option_handler },
159 { {"h8300s", no_argument, NULL, OPTION_H8300S},
160 'S', NULL, "Indicate the CPU is h8/300s",
161 standard_option_handler },
162 { {"h8300sx", no_argument, NULL, OPTION_H8300SX},
163 'x', NULL, "Indicate the CPU is h8/300sx",
164 standard_option_handler },
167 #ifdef SIM_HAVE_FLATMEM
168 { {"mem-size", required_argument, NULL, OPTION_MEM_SIZE},
169 'm', "MEMORY SIZE", "Specify memory size",
170 standard_option_handler },
173 { {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
174 '\0', "COMMAND", ""/*undocumented*/,
175 standard_option_handler },
177 { {"help", no_argument, NULL, OPTION_HELP},
178 'H', NULL, "Print help information",
179 standard_option_handler },
181 { {"architecture", required_argument, NULL, OPTION_ARCHITECTURE},
182 '\0', "MACHINE", "Specify the architecture to use",
183 standard_option_handler },
184 { {"architecture-info", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
185 '\0', NULL, "List supported architectures",
186 standard_option_handler },
187 { {"info-architecture", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
189 standard_option_handler },
191 { {"target", required_argument, NULL, OPTION_TARGET},
192 '\0', "BFDNAME", "Specify the object-code format for the object files",
193 standard_option_handler },
195 #ifdef SIM_HANDLES_LMA
196 { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
199 "Use VMA or LMA addresses when loading image (default LMA)",
201 "Use VMA or LMA addresses when loading image (default VMA)",
203 standard_option_handler, "load-{lma,vma}" },
204 { {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
205 '\0', NULL, "", standard_option_handler, "" },
208 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
212 standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
213 char *arg, int is_command)
217 switch ((STANDARD_OPTIONS) opt)
220 STATE_VERBOSE_P (sd) = 1;
223 #ifdef SIM_HAVE_BIENDIAN
225 if (strcmp (arg, "big") == 0)
227 if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN)
229 sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
232 /* FIXME:wip: Need to set something in STATE_CONFIG. */
233 current_target_byte_order = BIG_ENDIAN;
235 else if (strcmp (arg, "little") == 0)
237 if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN)
239 sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
242 /* FIXME:wip: Need to set something in STATE_CONFIG. */
243 current_target_byte_order = LITTLE_ENDIAN;
247 sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
253 case OPTION_ENVIRONMENT:
254 if (strcmp (arg, "user") == 0)
255 STATE_ENVIRONMENT (sd) = USER_ENVIRONMENT;
256 else if (strcmp (arg, "virtual") == 0)
257 STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT;
258 else if (strcmp (arg, "operating") == 0)
259 STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
262 sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg);
265 if (WITH_ENVIRONMENT != ALL_ENVIRONMENT
266 && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd))
269 switch (WITH_ENVIRONMENT)
271 case USER_ENVIRONMENT: type = "user"; break;
272 case VIRTUAL_ENVIRONMENT: type = "virtual"; break;
273 case OPERATING_ENVIRONMENT: type = "operating"; break;
275 sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n",
281 case OPTION_ALIGNMENT:
282 if (strcmp (arg, "strict") == 0)
284 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT)
286 current_alignment = STRICT_ALIGNMENT;
290 else if (strcmp (arg, "nonstrict") == 0)
292 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT)
294 current_alignment = NONSTRICT_ALIGNMENT;
298 else if (strcmp (arg, "forced") == 0)
300 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT)
302 current_alignment = FORCED_ALIGNMENT;
308 sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg);
311 switch (WITH_ALIGNMENT)
313 case STRICT_ALIGNMENT:
314 sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n");
316 case NONSTRICT_ALIGNMENT:
317 sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n");
319 case FORCED_ALIGNMENT:
320 sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n");
327 sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
330 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
331 for (i = 0; i < MAX_DEBUG_VALUES; ++i)
332 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1;
336 case OPTION_DEBUG_INSN :
338 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
341 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
342 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
346 case OPTION_DEBUG_FILE :
348 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
351 FILE *f = fopen (arg, "w");
355 sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
358 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
359 CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
363 #ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */
365 set_h8300h (bfd_mach_h8300h);
368 set_h8300h (bfd_mach_h8300s);
371 set_h8300h (bfd_mach_h8300sx);
375 #ifdef SIM_HAVE_FLATMEM
376 case OPTION_MEM_SIZE:
378 unsigned long ul = strtol (arg, NULL, 0);
379 /* 16384: some minimal amount */
380 if (! isdigit (arg[0]) || ul < 16384)
382 sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
385 STATE_MEM_SIZE (sd) = ul;
390 case OPTION_DO_COMMAND:
391 sim_do_command (sd, arg);
394 case OPTION_ARCHITECTURE:
396 const struct bfd_arch_info *ap = bfd_scan_arch (arg);
399 sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg);
402 STATE_ARCHITECTURE (sd) = ap;
406 case OPTION_ARCHITECTURE_INFO:
408 const char **list = bfd_arch_list();
412 sim_io_printf (sd, "Possible architectures:");
413 for (lp = list; *lp != NULL; lp++)
414 sim_io_printf (sd, " %s", *lp);
415 sim_io_printf (sd, "\n");
422 STATE_TARGET (sd) = xstrdup (arg);
426 case OPTION_LOAD_LMA:
428 STATE_LOAD_AT_LMA_P (sd) = 1;
432 case OPTION_LOAD_VMA:
434 STATE_LOAD_AT_LMA_P (sd) = 0;
439 sim_print_help (sd, is_command);
440 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
442 /* FIXME: 'twould be nice to do something similar if gdb. */
449 /* Add the standard option list to the simulator. */
452 standard_install (SIM_DESC sd)
454 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
455 if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK)
457 #ifdef SIM_HANDLES_LMA
458 STATE_LOAD_AT_LMA_P (sd) = SIM_HANDLES_LMA;
463 /* Return non-zero if arg is a duplicate argument.
464 If ARG is NULL, initialize. */
466 #define ARG_HASH_SIZE 97
467 #define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
474 static char **arg_table = NULL;
478 if (arg_table == NULL)
479 arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
480 memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
484 hash = ARG_HASH (arg);
485 while (arg_table[hash] != NULL)
487 if (strcmp (arg, arg_table[hash]) == 0)
489 /* We assume there won't be more than ARG_HASH_SIZE arguments so we
490 don't check if the table is full. */
491 if (++hash == ARG_HASH_SIZE)
494 arg_table[hash] = arg;
498 /* Called by sim_open to parse the arguments. */
501 sim_parse_args (sd, argv)
505 int c, i, argc, num_opts;
506 char *p, *short_options;
507 /* The `val' option struct entry is dynamically assigned for options that
508 only come in the long form. ORIG_VAL is used to get the original value
511 struct option *lp, *long_options;
512 const struct option_list *ol;
514 OPTION_HANDLER **handlers;
516 SIM_RC result = SIM_RC_OK;
518 /* Count the number of arguments. */
519 for (argc = 0; argv[argc] != NULL; ++argc)
522 /* Count the number of options. */
524 for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
525 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
527 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
528 for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next)
529 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
532 /* Initialize duplicate argument checker. */
533 (void) dup_arg_p (NULL);
535 /* Build the option table for getopt. */
537 long_options = NZALLOC (struct option, num_opts + 1);
539 short_options = NZALLOC (char, num_opts * 3 + 1);
541 handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts);
542 orig_val = NZALLOC (int, OPTION_START + num_opts);
543 opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts);
545 /* Set '+' as first char so argument permutation isn't done. This
546 is done to stop getopt_long returning options that appear after
547 the target program. Such options should be passed unchanged into
548 the program image. */
551 for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
552 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
554 if (dup_arg_p (opt->opt.name))
556 if (opt->shortopt != 0)
558 *p++ = opt->shortopt;
559 if (opt->opt.has_arg == required_argument)
561 else if (opt->opt.has_arg == optional_argument)
562 { *p++ = ':'; *p++ = ':'; }
563 handlers[(unsigned char) opt->shortopt] = opt->handler;
564 if (opt->opt.val != 0)
565 orig_val[(unsigned char) opt->shortopt] = opt->opt.val;
567 orig_val[(unsigned char) opt->shortopt] = opt->shortopt;
569 if (opt->opt.name != NULL)
572 /* Dynamically assign `val' numbers for long options. */
574 handlers[lp->val] = opt->handler;
575 orig_val[lp->val] = opt->opt.val;
576 opt_cpu[lp->val] = NULL;
581 for (c = 0; c < MAX_NR_PROCESSORS; ++c)
583 sim_cpu *cpu = STATE_CPU (sd, c);
584 for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next)
585 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
587 #if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down
588 on the need for dup_arg_p checking. Maybe in the future it'll be
589 needed so this is just commented out, and not deleted. */
590 if (dup_arg_p (opt->opt.name))
593 /* Don't allow short versions of cpu specific options for now. */
594 if (opt->shortopt != 0)
596 sim_io_eprintf (sd, "internal error, short cpu specific option");
597 result = SIM_RC_FAIL;
600 if (opt->opt.name != NULL)
604 /* Prepend --<cpuname>- to the option. */
605 asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name);
607 /* Dynamically assign `val' numbers for long options. */
609 handlers[lp->val] = opt->handler;
610 orig_val[lp->val] = opt->opt.val;
611 opt_cpu[lp->val] = cpu;
617 /* Terminate the short and long option lists. */
621 /* Ensure getopt is initialized. */
628 optc = getopt_long (argc, argv, short_options, long_options, &longind);
631 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
632 STATE_PROG_ARGV (sd) = dupargv (argv + optind);
637 result = SIM_RC_FAIL;
641 if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
643 result = SIM_RC_FAIL;
648 zfree (long_options);
649 zfree (short_options);
656 /* Utility of sim_print_help to print a list of option tables. */
659 print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command)
663 for ( ; ol != NULL; ol = ol->next)
664 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
666 const int indent = 30;
670 if (dup_arg_p (opt->opt.name))
673 if (opt->doc == NULL)
676 if (opt->doc_name != NULL && opt->doc_name [0] == '\0')
679 sim_io_printf (sd, " ");
684 /* list any short options (aliases) for the current OPT */
690 if (o->shortopt != '\0')
692 sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
693 len += (comma ? 2 : 0) + 2;
696 if (o->opt.has_arg == optional_argument)
698 sim_io_printf (sd, "[%s]", o->arg);
699 len += 1 + strlen (o->arg) + 1;
703 sim_io_printf (sd, " %s", o->arg);
704 len += 1 + strlen (o->arg);
711 while (OPTION_VALID_P (o) && o->doc == NULL);
714 /* list any long options (aliases) for the current OPT */
719 const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL;
720 if (o->doc_name != NULL)
726 sim_io_printf (sd, "%s%s%s%s%s",
728 is_command ? "" : "--",
729 cpu ? cpu_prefix : "",
732 len += ((comma ? 2 : 0)
733 + (is_command ? 0 : 2)
737 if (o->opt.has_arg == optional_argument)
739 sim_io_printf (sd, "[=%s]", o->arg);
740 len += 2 + strlen (o->arg) + 1;
744 sim_io_printf (sd, " %s", o->arg);
745 len += 1 + strlen (o->arg);
752 while (OPTION_VALID_P (o) && o->doc == NULL);
756 sim_io_printf (sd, "\n%*s", indent, "");
759 sim_io_printf (sd, "%*s", indent - len, "");
761 /* print the description, word wrap long lines */
763 const char *chp = opt->doc;
764 unsigned doc_width = 80 - indent;
765 while (strlen (chp) >= doc_width) /* some slack */
767 const char *end = chp + doc_width - 1;
768 while (end > chp && !isspace (*end))
771 end = chp + doc_width - 1;
772 sim_io_printf (sd, "%.*s\n%*s", end - chp, chp, indent, "");
774 while (isspace (*chp) && *chp != '\0')
777 sim_io_printf (sd, "%s\n", chp);
782 /* Print help messages for the options. */
785 sim_print_help (sd, is_command)
789 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
790 sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
793 /* Initialize duplicate argument checker. */
794 (void) dup_arg_p (NULL);
796 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
797 sim_io_printf (sd, "Options:\n");
799 sim_io_printf (sd, "Commands:\n");
801 print_help (sd, NULL, STATE_OPTIONS (sd), is_command);
802 sim_io_printf (sd, "\n");
804 /* Print cpu-specific options. */
808 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
810 sim_cpu *cpu = STATE_CPU (sd, i);
811 if (CPU_OPTIONS (cpu) == NULL)
813 sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu));
814 print_help (sd, cpu, CPU_OPTIONS (cpu), is_command);
815 sim_io_printf (sd, "\n");
819 sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n",
820 STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command");
821 sim_io_printf (sd, " may not be applicable\n");
823 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
825 sim_io_printf (sd, "\n");
826 sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
827 sim_io_printf (sd, " Note: Very few simulators support this.\n");
831 /* Utility of sim_args_command to find the closest match for a command.
832 Commands that have "-" in them can be specified as separate words.
833 e.g. sim memory-region 0x800000,0x4000
834 or sim memory region 0x800000,0x4000
835 If CPU is non-null, use its option table list, otherwise use the main one.
836 *PARGI is where to start looking in ARGV. It is updated to point past
839 static const OPTION *
840 find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi)
842 const struct option_list *ol;
844 /* most recent option match */
845 const OPTION *matching_opt = NULL;
846 int matching_argi = -1;
849 ol = CPU_OPTIONS (cpu);
851 ol = STATE_OPTIONS (sd);
853 /* Skip passed elements specified by *PARGI. */
856 for ( ; ol != NULL; ol = ol->next)
857 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
860 const char *name = opt->opt.name;
863 while (argv [argi] != NULL
864 && strncmp (name, argv [argi], strlen (argv [argi])) == 0)
866 name = &name [strlen (argv[argi])];
869 /* leading match ...<a-b-c>-d-e-f - continue search */
870 name ++; /* skip `-' */
874 else if (name [0] == '\0')
876 /* exact match ...<a-b-c-d-e-f> - better than before? */
877 if (argi > matching_argi)
879 matching_argi = argi;
889 *pargi = matching_argi;
894 sim_args_command (SIM_DESC sd, char *cmd)
896 /* something to do? */
898 return SIM_RC_OK; /* FIXME - perhaphs help would be better */
902 /* user specified -<opt> ... form? */
903 char **argv = buildargv (cmd);
904 SIM_RC rc = sim_parse_args (sd, argv);
910 char **argv = buildargv (cmd);
911 const OPTION *matching_opt = NULL;
915 if (argv [0] == NULL)
916 return SIM_RC_OK; /* FIXME - perhaphs help would be better */
918 /* First check for a cpu selector. */
920 char *cpu_name = xstrdup (argv[0]);
921 char *hyphen = strchr (cpu_name, '-');
924 cpu = sim_cpu_lookup (sd, cpu_name);
927 /* If <cpuname>-<command>, point argv[0] at <command>. */
931 argv[0] += hyphen - cpu_name + 1;
935 matching_opt = find_match (sd, cpu, argv, &matching_argi);
936 /* If hyphen found restore argv[0]. */
938 argv[0] -= hyphen - cpu_name + 1;
943 /* If that failed, try the main table. */
944 if (matching_opt == NULL)
947 matching_opt = find_match (sd, NULL, argv, &matching_argi);
950 if (matching_opt != NULL)
952 switch (matching_opt->opt.has_arg)
955 if (argv [matching_argi + 1] == NULL)
956 matching_opt->handler (sd, cpu, matching_opt->opt.val,
957 NULL, 1/*is_command*/);
959 sim_io_eprintf (sd, "Command `%s' takes no arguments\n",
960 matching_opt->opt.name);
962 case optional_argument:
963 if (argv [matching_argi + 1] == NULL)
964 matching_opt->handler (sd, cpu, matching_opt->opt.val,
965 NULL, 1/*is_command*/);
966 else if (argv [matching_argi + 2] == NULL)
967 matching_opt->handler (sd, cpu, matching_opt->opt.val,
968 argv [matching_argi + 1], 1/*is_command*/);
970 sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n",
971 matching_opt->opt.name);
973 case required_argument:
974 if (argv [matching_argi + 1] == NULL)
975 sim_io_eprintf (sd, "Command `%s' requires an argument\n",
976 matching_opt->opt.name);
977 else if (argv [matching_argi + 2] == NULL)
978 matching_opt->handler (sd, cpu, matching_opt->opt.val,
979 argv [matching_argi + 1], 1/*is_command*/);
981 sim_io_eprintf (sd, "Command `%s' requires only one argument\n",
982 matching_opt->opt.name);
991 /* didn't find anything that remotly matched */