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[thirdparty/binutils-gdb.git] / sim / common / sim-options.c
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c906108c 1/* Simulator option handling.
9b254dd1 2 Copyright (C) 1996, 1997, 2004, 2007, 2008 Free Software Foundation, Inc.
c906108c
SS		 3 Contributed by Cygnus Support.
4
5This file is part of GDB, the GNU debugger.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
4744ac1b
JB		 9the Free Software Foundation; either version 3 of the License, or
10(at your option) any later version.
c906108c
SS		 11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
4744ac1b
JB		 17You should have received a copy of the GNU General Public License
18along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c
SS		 19
20#include "sim-main.h"
21#ifdef HAVE_STRING_H
22#include <string.h>
23#else
24#ifdef HAVE_STRINGS_H
25#include <strings.h>
26#endif
27#endif
28#ifdef HAVE_STDLIB_H
29#include <stdlib.h>
30#endif
31#include <ctype.h>
32#include "libiberty.h"
33#include "sim-options.h"
34#include "sim-io.h"
35#include "sim-assert.h"
36
37#include "bfd.h"
38
39/* Add a set of options to the simulator.
40 TABLE is an array of OPTIONS terminated by a NULL `opt.name' entry.
41 This is intended to be called by modules in their `install' handler. */
42
43SIM_RC
44sim_add_option_table (SIM_DESC sd, sim_cpu *cpu, const OPTION *table)
45{
46 struct option_list *ol = ((struct option_list *)
47 xmalloc (sizeof (struct option_list)));
48
49 /* Note: The list is constructed in the reverse order we're called so
50 later calls will override earlier ones (in case that ever happens).
51 This is the intended behaviour. */
52
53 if (cpu)
54 {
55 ol->next = CPU_OPTIONS (cpu);
56 ol->options = table;
57 CPU_OPTIONS (cpu) = ol;
58 }
59 else
60 {
61 ol->next = STATE_OPTIONS (sd);
62 ol->options = table;
63 STATE_OPTIONS (sd) = ol;
64 }
65
66 return SIM_RC_OK;
67}
68
69/* Standard option table.
70 Modules may specify additional ones.
71 The caller of sim_parse_args may also specify additional options
72 by calling sim_add_option_table first. */
73
74static DECLARE_OPTION_HANDLER (standard_option_handler);
75
76/* FIXME: We shouldn't print in --help output options that aren't usable.
77 Some fine tuning will be necessary. One can either move less general
78 options to another table or use a HAVE_FOO macro to ifdef out unavailable
79 options. */
80
81/* ??? One might want to conditionally compile out the entries that
82 aren't enabled. There's a distinction, however, between options a
83 simulator can't support and options that haven't been configured in.
84 Certainly options a simulator can't support shouldn't appear in the
85 output of --help. Whether the same thing applies to options that haven't
86 been configured in or not isn't something I can get worked up over.
87 [Note that conditionally compiling them out might simply involve moving
88 the option to another table.]
89 If you decide to conditionally compile them out as well, delete this
90 comment and add a comment saying that that is the rule. */
91
92typedef enum {
93 OPTION_DEBUG_INSN = OPTION_START,
94 OPTION_DEBUG_FILE,
95 OPTION_DO_COMMAND,
96 OPTION_ARCHITECTURE,
97 OPTION_TARGET,
98 OPTION_ARCHITECTURE_INFO,
99 OPTION_ENVIRONMENT,
100 OPTION_ALIGNMENT,
101 OPTION_VERBOSE,
102#if defined (SIM_HAVE_BIENDIAN)
103 OPTION_ENDIAN,
104#endif
105 OPTION_DEBUG,
106#ifdef SIM_HAVE_FLATMEM
107 OPTION_MEM_SIZE,
108#endif
109 OPTION_HELP,
110#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
828c9ae6 111 OPTION_H8300H,
a8cdafbd 112 OPTION_H8300S,
828c9ae6 113 OPTION_H8300SX,
c906108c 114#endif
43e526b9
JM		 115 OPTION_LOAD_LMA,
116 OPTION_LOAD_VMA,
027e2a04 117 OPTION_SYSROOT
c906108c
SS		 118} STANDARD_OPTIONS;
119
120static const OPTION standard_options[] =
121{
122 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
123 'v', NULL, "Verbose output",
124 standard_option_handler },
125
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 },
130#endif
131
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 },
139#endif
140
141 { {"alignment", required_argument, NULL, OPTION_ALIGNMENT},
142 '\0', "strict|nonstrict|forced", "Set memory access alignment",
143 standard_option_handler },
144
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 },
154
155#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
828c9ae6 156 { {"h8300h", no_argument, NULL, OPTION_H8300H},
a69146da 157 'h', NULL, "Indicate the CPU is H8/300H",
a8cdafbd
AV		 158 standard_option_handler },
159 { {"h8300s", no_argument, NULL, OPTION_H8300S},
a69146da 160 'S', NULL, "Indicate the CPU is H8S",
c906108c 161 standard_option_handler },
828c9ae6 162 { {"h8300sx", no_argument, NULL, OPTION_H8300SX},
a69146da 163 'x', NULL, "Indicate the CPU is H8SX",
828c9ae6 164 standard_option_handler },
c906108c
SS		 165#endif
166
167#ifdef SIM_HAVE_FLATMEM
168 { {"mem-size", required_argument, NULL, OPTION_MEM_SIZE},
f40f1a01
NC		 169 'm', "<size>[in bytes, Kb (k suffix), Mb (m suffix) or Gb (g suffix)]",
170 "Specify memory size", standard_option_handler },
c906108c
SS		 171#endif
172
173 { {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
174 '\0', "COMMAND", ""/*undocumented*/,
175 standard_option_handler },
176
177 { {"help", no_argument, NULL, OPTION_HELP},
178 'H', NULL, "Print help information",
179 standard_option_handler },
180
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},
188 '\0', NULL, NULL,
189 standard_option_handler },
190
191 { {"target", required_argument, NULL, OPTION_TARGET},
192 '\0', "BFDNAME", "Specify the object-code format for the object files",
193 standard_option_handler },
194
43e526b9
JM		 195#ifdef SIM_HANDLES_LMA
196 { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
197 '\0', NULL,
198#if SIM_HANDLES_LMA
199 "Use VMA or LMA addresses when loading image (default LMA)",
200#else
201 "Use VMA or LMA addresses when loading image (default VMA)",
202#endif
203 standard_option_handler, "load-{lma,vma}" },
204 { {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
205 '\0', NULL, "", standard_option_handler, "" },
206#endif
207
027e2a04
HPN		 208 { {"sysroot", required_argument, NULL, OPTION_SYSROOT},
209 '\0', "SYSROOT",
210 "Root for system calls with absolute file-names and cwd at start",
211 standard_option_handler },
212
c906108c
SS		 213 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
214};
215
216static SIM_RC
217standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
218 char *arg, int is_command)
219{
220 int i,n;
221
222 switch ((STANDARD_OPTIONS) opt)
223 {
224 case OPTION_VERBOSE:
225 STATE_VERBOSE_P (sd) = 1;
226 break;
227
228#ifdef SIM_HAVE_BIENDIAN
229 case OPTION_ENDIAN:
230 if (strcmp (arg, "big") == 0)
231 {
232 if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN)
233 {
234 sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
235 return SIM_RC_FAIL;
236 }
237 /* FIXME:wip: Need to set something in STATE_CONFIG. */
238 current_target_byte_order = BIG_ENDIAN;
239 }
240 else if (strcmp (arg, "little") == 0)
241 {
242 if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN)
243 {
244 sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
245 return SIM_RC_FAIL;
246 }
247 /* FIXME:wip: Need to set something in STATE_CONFIG. */
248 current_target_byte_order = LITTLE_ENDIAN;
249 }
250 else
251 {
252 sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
253 return SIM_RC_FAIL;
254 }
255 break;
256#endif
257
258 case OPTION_ENVIRONMENT:
259 if (strcmp (arg, "user") == 0)
260 STATE_ENVIRONMENT (sd) = USER_ENVIRONMENT;
261 else if (strcmp (arg, "virtual") == 0)
262 STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT;
263 else if (strcmp (arg, "operating") == 0)
264 STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT;
265 else
266 {
267 sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg);
268 return SIM_RC_FAIL;
269 }
270 if (WITH_ENVIRONMENT != ALL_ENVIRONMENT
271 && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd))
272 {
273 char *type;
274 switch (WITH_ENVIRONMENT)
275 {
276 case USER_ENVIRONMENT: type = "user"; break;
277 case VIRTUAL_ENVIRONMENT: type = "virtual"; break;
278 case OPERATING_ENVIRONMENT: type = "operating"; break;
279 }
280 sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n",
281 type);
282 return SIM_RC_FAIL;
283 }
284 break;
285
286 case OPTION_ALIGNMENT:
287 if (strcmp (arg, "strict") == 0)
288 {
289 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT)
290 {
291 current_alignment = STRICT_ALIGNMENT;
292 break;
293 }
294 }
295 else if (strcmp (arg, "nonstrict") == 0)
296 {
297 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT)
298 {
299 current_alignment = NONSTRICT_ALIGNMENT;
300 break;
301 }
302 }
303 else if (strcmp (arg, "forced") == 0)
304 {
305 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT)
306 {
307 current_alignment = FORCED_ALIGNMENT;
308 break;
309 }
310 }
311 else
312 {
313 sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg);
314 return SIM_RC_FAIL;
315 }
316 switch (WITH_ALIGNMENT)
317 {
318 case STRICT_ALIGNMENT:
319 sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n");
320 break;
321 case NONSTRICT_ALIGNMENT:
322 sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n");
323 break;
324 case FORCED_ALIGNMENT:
325 sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n");
326 break;
327 }
328 return SIM_RC_FAIL;
329
330 case OPTION_DEBUG:
331 if (! WITH_DEBUG)
332 sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
333 else
334 {
335 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
336 for (i = 0; i < MAX_DEBUG_VALUES; ++i)
337 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1;
338 }
339 break;
340
341 case OPTION_DEBUG_INSN :
342 if (! WITH_DEBUG)
343 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
344 else
345 {
346 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
347 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
348 }
349 break;
350
351 case OPTION_DEBUG_FILE :
352 if (! WITH_DEBUG)
353 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
354 else
355 {
356 FILE *f = fopen (arg, "w");
357
358 if (f == NULL)
359 {
360 sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
361 return SIM_RC_FAIL;
362 }
363 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
364 CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
365 }
366 break;
367
368#ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */
828c9ae6
MS		 369 case OPTION_H8300H:
370 set_h8300h (bfd_mach_h8300h);
a8cdafbd
AV		 371 break;
372 case OPTION_H8300S:
828c9ae6
MS		 373 set_h8300h (bfd_mach_h8300s);
374 break;
375 case OPTION_H8300SX:
376 set_h8300h (bfd_mach_h8300sx);
c906108c
SS		 377 break;
378#endif
379
380#ifdef SIM_HAVE_FLATMEM
381 case OPTION_MEM_SIZE:
382 {
f40f1a01
NC		 383 char * endp;
384 unsigned long ul = strtol (arg, &endp, 0);
385
386 switch (* endp)
387 {
388 case 'k': case 'K': size <<= 10; break;
389 case 'm': case 'M': size <<= 20; break;
390 case 'g': case 'G': size <<= 30; break;
391 case ' ': case '\0': case '\t': break;
392 default:
393 if (ul > 0)
394 sim_io_eprintf (sd, "Ignoring strange character at end of memory size: %c\n", * endp);
395 break;
396 }
397
c906108c
SS		 398 /* 16384: some minimal amount */
399 if (! isdigit (arg[0]) || ul < 16384)
400 {
401 sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
402 return SIM_RC_FAIL;
403 }
404 STATE_MEM_SIZE (sd) = ul;
405 }
406 break;
407#endif
408
409 case OPTION_DO_COMMAND:
410 sim_do_command (sd, arg);
411 break;
412
413 case OPTION_ARCHITECTURE:
414 {
415 const struct bfd_arch_info *ap = bfd_scan_arch (arg);
416 if (ap == NULL)
417 {
418 sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg);
419 return SIM_RC_FAIL;
420 }
421 STATE_ARCHITECTURE (sd) = ap;
422 break;
423 }
424
425 case OPTION_ARCHITECTURE_INFO:
426 {
427 const char **list = bfd_arch_list();
428 const char **lp;
429 if (list == NULL)
430 abort ();
431 sim_io_printf (sd, "Possible architectures:");
432 for (lp = list; *lp != NULL; lp++)
433 sim_io_printf (sd, " %s", *lp);
434 sim_io_printf (sd, "\n");
435 free (list);
436 break;
437 }
438
439 case OPTION_TARGET:
440 {
441 STATE_TARGET (sd) = xstrdup (arg);
442 break;
443 }
444
43e526b9
JM		 445 case OPTION_LOAD_LMA:
446 {
447 STATE_LOAD_AT_LMA_P (sd) = 1;
448 break;
449 }
450
451 case OPTION_LOAD_VMA:
452 {
453 STATE_LOAD_AT_LMA_P (sd) = 0;
454 break;
455 }
456
c906108c
SS		 457 case OPTION_HELP:
458 sim_print_help (sd, is_command);
459 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
460 exit (0);
461 /* FIXME: 'twould be nice to do something similar if gdb. */
462 break;
027e2a04
HPN		 463
464 case OPTION_SYSROOT:
465 /* Don't leak memory in the odd event that there's lots of
466 --sysroot=... options. */
467 if (simulator_sysroot[0] != '\0' && arg[0] != '\0')
468 free (simulator_sysroot);
469 simulator_sysroot = xstrdup (arg);
470 break;
c906108c
SS		 471 }
472
473 return SIM_RC_OK;
474}
475
476/* Add the standard option list to the simulator. */
477
478SIM_RC
479standard_install (SIM_DESC sd)
480{
481 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
482 if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK)
483 return SIM_RC_FAIL;
43e526b9
JM		 484#ifdef SIM_HANDLES_LMA
485 STATE_LOAD_AT_LMA_P (sd) = SIM_HANDLES_LMA;
486#endif
c906108c
SS		 487 return SIM_RC_OK;
488}
489
490/* Return non-zero if arg is a duplicate argument.
491 If ARG is NULL, initialize. */
492
493#define ARG_HASH_SIZE 97
494#define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
495
496static int
497dup_arg_p (arg)
498 char *arg;
499{
500 int hash;
501 static char **arg_table = NULL;
502
503 if (arg == NULL)
504 {
505 if (arg_table == NULL)
506 arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
507 memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
508 return 0;
509 }
510
511 hash = ARG_HASH (arg);
512 while (arg_table[hash] != NULL)
513 {
514 if (strcmp (arg, arg_table[hash]) == 0)
515 return 1;
516 /* We assume there won't be more than ARG_HASH_SIZE arguments so we
517 don't check if the table is full. */
518 if (++hash == ARG_HASH_SIZE)
519 hash = 0;
520 }
521 arg_table[hash] = arg;
522 return 0;
523}
524
525/* Called by sim_open to parse the arguments. */
526
527SIM_RC
528sim_parse_args (sd, argv)
529 SIM_DESC sd;
530 char **argv;
531{
532 int c, i, argc, num_opts;
533 char *p, *short_options;
534 /* The `val' option struct entry is dynamically assigned for options that
535 only come in the long form. ORIG_VAL is used to get the original value
536 back. */
537 int *orig_val;
538 struct option *lp, *long_options;
539 const struct option_list *ol;
540 const OPTION *opt;
541 OPTION_HANDLER **handlers;
542 sim_cpu **opt_cpu;
7c070881 543 SIM_RC result = SIM_RC_OK;
c906108c
SS		 544
545 /* Count the number of arguments. */
546 for (argc = 0; argv[argc] != NULL; ++argc)
547 continue;
548
549 /* Count the number of options. */
550 num_opts = 0;
551 for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
552 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
553 ++num_opts;
554 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
555 for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next)
556 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
557 ++num_opts;
558
559 /* Initialize duplicate argument checker. */
560 (void) dup_arg_p (NULL);
561
562 /* Build the option table for getopt. */
563
564 long_options = NZALLOC (struct option, num_opts + 1);
565 lp = long_options;
566 short_options = NZALLOC (char, num_opts * 3 + 1);
567 p = short_options;
568 handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts);
569 orig_val = NZALLOC (int, OPTION_START + num_opts);
570 opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts);
571
572 /* Set '+' as first char so argument permutation isn't done. This
573 is done to stop getopt_long returning options that appear after
574 the target program. Such options should be passed unchanged into
575 the program image. */
576 *p++ = '+';
577
578 for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
579 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
580 {
581 if (dup_arg_p (opt->opt.name))
582 continue;
583 if (opt->shortopt != 0)
584 {
585 *p++ = opt->shortopt;
586 if (opt->opt.has_arg == required_argument)
587 *p++ = ':';
588 else if (opt->opt.has_arg == optional_argument)
589 { *p++ = ':'; *p++ = ':'; }
590 handlers[(unsigned char) opt->shortopt] = opt->handler;
591 if (opt->opt.val != 0)
592 orig_val[(unsigned char) opt->shortopt] = opt->opt.val;
593 else
594 orig_val[(unsigned char) opt->shortopt] = opt->shortopt;
595 }
596 if (opt->opt.name != NULL)
597 {
598 *lp = opt->opt;
599 /* Dynamically assign `val' numbers for long options. */
600 lp->val = i++;
601 handlers[lp->val] = opt->handler;
602 orig_val[lp->val] = opt->opt.val;
603 opt_cpu[lp->val] = NULL;
604 ++lp;
605 }
606 }
607
608 for (c = 0; c < MAX_NR_PROCESSORS; ++c)
609 {
610 sim_cpu *cpu = STATE_CPU (sd, c);
611 for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next)
612 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
613 {
614#if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down
615 on the need for dup_arg_p checking. Maybe in the future it'll be
616 needed so this is just commented out, and not deleted. */
617 if (dup_arg_p (opt->opt.name))
618 continue;
619#endif
620 /* Don't allow short versions of cpu specific options for now. */
621 if (opt->shortopt != 0)
622 {
623 sim_io_eprintf (sd, "internal error, short cpu specific option");
7c070881
SC		 624 result = SIM_RC_FAIL;
625 break;
c906108c
SS		 626 }
627 if (opt->opt.name != NULL)
628 {
629 char *name;
630 *lp = opt->opt;
631 /* Prepend --<cpuname>- to the option. */
632 asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name);
633 lp->name = name;
634 /* Dynamically assign `val' numbers for long options. */
635 lp->val = i++;
636 handlers[lp->val] = opt->handler;
637 orig_val[lp->val] = opt->opt.val;
638 opt_cpu[lp->val] = cpu;
639 ++lp;
640 }
641 }
642 }
643
644 /* Terminate the short and long option lists. */
645 *p = 0;
646 lp->name = NULL;
647
648 /* Ensure getopt is initialized. */
649 optind = 0;
650
651 while (1)
652 {
653 int longind, optc;
654
655 optc = getopt_long (argc, argv, short_options, long_options, &longind);
656 if (optc == -1)
657 {
658 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
659 STATE_PROG_ARGV (sd) = dupargv (argv + optind);
660 break;
661 }
662 if (optc == '?')
7c070881
SC		 663 {
664 result = SIM_RC_FAIL;
665 break;
666 }
c906108c
SS		 667
668 if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
7c070881
SC		 669 {
670 result = SIM_RC_FAIL;
671 break;
672 }
c906108c
SS		 673 }
674
7c070881
SC		 675 zfree (long_options);
676 zfree (short_options);
677 zfree (handlers);
678 zfree (opt_cpu);
679 zfree (orig_val);
680 return result;
c906108c
SS		 681}
682
683/* Utility of sim_print_help to print a list of option tables. */
684
685static void
686print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command)
687{
688 const OPTION *opt;
689
690 for ( ; ol != NULL; ol = ol->next)
691 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
692 {
693 const int indent = 30;
694 int comma, len;
695 const OPTION *o;
696
697 if (dup_arg_p (opt->opt.name))
698 continue;
699
700 if (opt->doc == NULL)
701 continue;
702
703 if (opt->doc_name != NULL && opt->doc_name [0] == '\0')
704 continue;
705
706 sim_io_printf (sd, " ");
707
708 comma = 0;
709 len = 2;
710
711 /* list any short options (aliases) for the current OPT */
712 if (!is_command)
713 {
714 o = opt;
715 do
716 {
717 if (o->shortopt != '\0')
718 {
719 sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
720 len += (comma ? 2 : 0) + 2;
721 if (o->arg != NULL)
722 {
723 if (o->opt.has_arg == optional_argument)
724 {
725 sim_io_printf (sd, "[%s]", o->arg);
726 len += 1 + strlen (o->arg) + 1;
727 }
728 else
729 {
730 sim_io_printf (sd, " %s", o->arg);
731 len += 1 + strlen (o->arg);
732 }
733 }
734 comma = 1;
735 }
736 ++o;
737 }
738 while (OPTION_VALID_P (o) && o->doc == NULL);
739 }
740
741 /* list any long options (aliases) for the current OPT */
742 o = opt;
743 do
744 {
745 const char *name;
746 const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL;
747 if (o->doc_name != NULL)
748 name = o->doc_name;
749 else
750 name = o->opt.name;
751 if (name != NULL)
752 {
753 sim_io_printf (sd, "%s%s%s%s%s",
754 comma ? ", " : "",
755 is_command ? "" : "--",
756 cpu ? cpu_prefix : "",
757 cpu ? "-" : "",
758 name);
759 len += ((comma ? 2 : 0)
760 + (is_command ? 0 : 2)
761 + strlen (name));
762 if (o->arg != NULL)
763 {
764 if (o->opt.has_arg == optional_argument)
765 {
c4093a6a 766 sim_io_printf (sd, "[=%s]", o->arg);
c906108c
SS		 767 len += 2 + strlen (o->arg) + 1;
768 }
769 else
770 {
771 sim_io_printf (sd, " %s", o->arg);
772 len += 1 + strlen (o->arg);
773 }
774 }
775 comma = 1;
776 }
777 ++o;
778 }
779 while (OPTION_VALID_P (o) && o->doc == NULL);
780
781 if (len >= indent)
782 {
783 sim_io_printf (sd, "\n%*s", indent, "");
784 }
785 else
786 sim_io_printf (sd, "%*s", indent - len, "");
787
788 /* print the description, word wrap long lines */
789 {
790 const char *chp = opt->doc;
791 unsigned doc_width = 80 - indent;
792 while (strlen (chp) >= doc_width) /* some slack */
793 {
794 const char *end = chp + doc_width - 1;
795 while (end > chp && !isspace (*end))
796 end --;
797 if (end == chp)
798 end = chp + doc_width - 1;
e158f0a0
AC		 799 /* The cast should be ok - its distances between to
800 points in a string. */
801 sim_io_printf (sd, "%.*s\n%*s", (int) (end - chp), chp, indent,
802 "");
c906108c
SS		 803 chp = end;
804 while (isspace (*chp) && *chp != '\0')
805 chp++;
806 }
807 sim_io_printf (sd, "%s\n", chp);
808 }
809 }
810}
811
812/* Print help messages for the options. */
813
814void
815sim_print_help (sd, is_command)
816 SIM_DESC sd;
817 int is_command;
818{
819 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
820 sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
821 STATE_MY_NAME (sd));
822
823 /* Initialize duplicate argument checker. */
824 (void) dup_arg_p (NULL);
825
826 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
827 sim_io_printf (sd, "Options:\n");
828 else
829 sim_io_printf (sd, "Commands:\n");
830
831 print_help (sd, NULL, STATE_OPTIONS (sd), is_command);
832 sim_io_printf (sd, "\n");
833
834 /* Print cpu-specific options. */
835 {
836 int i;
837
838 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
839 {
840 sim_cpu *cpu = STATE_CPU (sd, i);
841 if (CPU_OPTIONS (cpu) == NULL)
842 continue;
843 sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu));
844 print_help (sd, cpu, CPU_OPTIONS (cpu), is_command);
845 sim_io_printf (sd, "\n");
846 }
847 }
848
849 sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n",
850 STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command");
851 sim_io_printf (sd, " may not be applicable\n");
852
853 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
854 {
855 sim_io_printf (sd, "\n");
856 sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
857 sim_io_printf (sd, " Note: Very few simulators support this.\n");
858 }
859}
860
861/* Utility of sim_args_command to find the closest match for a command.
862 Commands that have "-" in them can be specified as separate words.
863 e.g. sim memory-region 0x800000,0x4000
864 or sim memory region 0x800000,0x4000
865 If CPU is non-null, use its option table list, otherwise use the main one.
866 *PARGI is where to start looking in ARGV. It is updated to point past
867 the found option. */
868
869static const OPTION *
870find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi)
871{
872 const struct option_list *ol;
873 const OPTION *opt;
874 /* most recent option match */
875 const OPTION *matching_opt = NULL;
876 int matching_argi = -1;
877
878 if (cpu)
879 ol = CPU_OPTIONS (cpu);
880 else
881 ol = STATE_OPTIONS (sd);
882
883 /* Skip passed elements specified by *PARGI. */
884 argv += *pargi;
885
886 for ( ; ol != NULL; ol = ol->next)
887 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
888 {
889 int argi = 0;
890 const char *name = opt->opt.name;
891 if (name == NULL)
892 continue;
893 while (argv [argi] != NULL
894 && strncmp (name, argv [argi], strlen (argv [argi])) == 0)
895 {
896 name = &name [strlen (argv[argi])];
897 if (name [0] == '-')
898 {
899 /* leading match ...<a-b-c>-d-e-f - continue search */
900 name ++; /* skip `-' */
901 argi ++;
902 continue;
903 }
904 else if (name [0] == '\0')
905 {
906 /* exact match ...<a-b-c-d-e-f> - better than before? */
907 if (argi > matching_argi)
908 {
909 matching_argi = argi;
910 matching_opt = opt;
911 }
912 break;
913 }
914 else
915 break;
916 }
917 }
918
919 *pargi = matching_argi;
920 return matching_opt;
921}
922
923SIM_RC
924sim_args_command (SIM_DESC sd, char *cmd)
925{
926 /* something to do? */
927 if (cmd == NULL)
109d3db3 928 return SIM_RC_OK; /* FIXME - perhaps help would be better */
c906108c
SS		 929
930 if (cmd [0] == '-')
931 {
932 /* user specified -<opt> ... form? */
933 char **argv = buildargv (cmd);
934 SIM_RC rc = sim_parse_args (sd, argv);
935 freeargv (argv);
936 return rc;
937 }
938 else
939 {
940 char **argv = buildargv (cmd);
941 const OPTION *matching_opt = NULL;
942 int matching_argi;
943 sim_cpu *cpu;
944
945 if (argv [0] == NULL)
109d3db3 946 return SIM_RC_OK; /* FIXME - perhaps help would be better */
c906108c
SS		 947
948 /* First check for a cpu selector. */
949 {
950 char *cpu_name = xstrdup (argv[0]);
951 char *hyphen = strchr (cpu_name, '-');
952 if (hyphen)
953 *hyphen = 0;
954 cpu = sim_cpu_lookup (sd, cpu_name);
955 if (cpu)
956 {
957 /* If <cpuname>-<command>, point argv[0] at <command>. */
958 if (hyphen)
959 {
960 matching_argi = 0;
961 argv[0] += hyphen - cpu_name + 1;
962 }
963 else
964 matching_argi = 1;
965 matching_opt = find_match (sd, cpu, argv, &matching_argi);
966 /* If hyphen found restore argv[0]. */
967 if (hyphen)
968 argv[0] -= hyphen - cpu_name + 1;
969 }
970 free (cpu_name);
971 }
972
973 /* If that failed, try the main table. */
974 if (matching_opt == NULL)
975 {
976 matching_argi = 0;
977 matching_opt = find_match (sd, NULL, argv, &matching_argi);
978 }
979
980 if (matching_opt != NULL)
981 {
982 switch (matching_opt->opt.has_arg)
983 {
984 case no_argument:
985 if (argv [matching_argi + 1] == NULL)
986 matching_opt->handler (sd, cpu, matching_opt->opt.val,
987 NULL, 1/*is_command*/);
988 else
989 sim_io_eprintf (sd, "Command `%s' takes no arguments\n",
990 matching_opt->opt.name);
991 break;
992 case optional_argument:
993 if (argv [matching_argi + 1] == NULL)
994 matching_opt->handler (sd, cpu, matching_opt->opt.val,
995 NULL, 1/*is_command*/);
996 else if (argv [matching_argi + 2] == NULL)
997 matching_opt->handler (sd, cpu, matching_opt->opt.val,
998 argv [matching_argi + 1], 1/*is_command*/);
999 else
1000 sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n",
1001 matching_opt->opt.name);
1002 break;
1003 case required_argument:
1004 if (argv [matching_argi + 1] == NULL)
1005 sim_io_eprintf (sd, "Command `%s' requires an argument\n",
1006 matching_opt->opt.name);
1007 else if (argv [matching_argi + 2] == NULL)
1008 matching_opt->handler (sd, cpu, matching_opt->opt.val,
1009 argv [matching_argi + 1], 1/*is_command*/);
1010 else
1011 sim_io_eprintf (sd, "Command `%s' requires only one argument\n",
1012 matching_opt->opt.name);
1013 }
1014 freeargv (argv);
1015 return SIM_RC_OK;
1016 }
1017
1018 freeargv (argv);
1019 }
1020
1021 /* didn't find anything that remotly matched */
1022 return SIM_RC_FAIL;
1023}
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