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sim: convert old style function definitions
[deliverable/binutils-gdb.git] / sim / common / sim-options.c
CommitLineData
c906108c 1/* Simulator option handling.
dc3cf14f 2 Copyright (C) 1996, 1997, 2004, 2007, 2008, 2009, 2010
e4d013fc 3 Free Software Foundation, Inc.
c906108c
SS		 4 Contributed by Cygnus Support.
5
6This file is part of GDB, the GNU debugger.
7
8This program is free software; you can redistribute it and/or modify
9it under the terms of the GNU General Public License as published by
4744ac1b
JB		 10the Free Software Foundation; either version 3 of the License, or
11(at your option) any later version.
c906108c
SS		 12
13This program is distributed in the hope that it will be useful,
14but WITHOUT ANY WARRANTY; without even the implied warranty of
15MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16GNU General Public License for more details.
17
4744ac1b
JB		 18You should have received a copy of the GNU General Public License
19along with this program. If not, see <http://www.gnu.org/licenses/>. */
c906108c
SS		 20
21#include "sim-main.h"
22#ifdef HAVE_STRING_H
23#include <string.h>
24#else
25#ifdef HAVE_STRINGS_H
26#include <strings.h>
27#endif
28#endif
29#ifdef HAVE_STDLIB_H
30#include <stdlib.h>
31#endif
32#include <ctype.h>
33#include "libiberty.h"
34#include "sim-options.h"
35#include "sim-io.h"
36#include "sim-assert.h"
37
38#include "bfd.h"
39
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. */
43
44SIM_RC
45sim_add_option_table (SIM_DESC sd, sim_cpu *cpu, const OPTION *table)
46{
47 struct option_list *ol = ((struct option_list *)
48 xmalloc (sizeof (struct option_list)));
49
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. */
53
54 if (cpu)
55 {
56 ol->next = CPU_OPTIONS (cpu);
57 ol->options = table;
58 CPU_OPTIONS (cpu) = ol;
59 }
60 else
61 {
62 ol->next = STATE_OPTIONS (sd);
63 ol->options = table;
64 STATE_OPTIONS (sd) = ol;
65 }
66
67 return SIM_RC_OK;
68}
69
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. */
74
75static DECLARE_OPTION_HANDLER (standard_option_handler);
76
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
80 options. */
81
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. */
92
93typedef enum {
94 OPTION_DEBUG_INSN = OPTION_START,
95 OPTION_DEBUG_FILE,
96 OPTION_DO_COMMAND,
97 OPTION_ARCHITECTURE,
98 OPTION_TARGET,
99 OPTION_ARCHITECTURE_INFO,
100 OPTION_ENVIRONMENT,
101 OPTION_ALIGNMENT,
102 OPTION_VERBOSE,
c906108c 103 OPTION_ENDIAN,
c906108c
SS		 104 OPTION_DEBUG,
105#ifdef SIM_HAVE_FLATMEM
106 OPTION_MEM_SIZE,
107#endif
108 OPTION_HELP,
109#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
828c9ae6 110 OPTION_H8300H,
a8cdafbd 111 OPTION_H8300S,
828c9ae6 112 OPTION_H8300SX,
c906108c 113#endif
43e526b9
JM		 114 OPTION_LOAD_LMA,
115 OPTION_LOAD_VMA,
027e2a04 116 OPTION_SYSROOT
c906108c
SS		 117} STANDARD_OPTIONS;
118
119static const OPTION standard_options[] =
120{
121 { {"verbose", no_argument, NULL, OPTION_VERBOSE},
122 'v', NULL, "Verbose output",
123 standard_option_handler },
124
c906108c
SS		 125 { {"endian", required_argument, NULL, OPTION_ENDIAN},
126 'E', "big|little", "Set endianness",
127 standard_option_handler },
c906108c
SS		 128
129#ifdef SIM_HAVE_ENVIRONMENT
130 /* This option isn't supported unless all choices are supported in keeping
131 with the goal of not printing in --help output things the simulator can't
132 do [as opposed to things that just haven't been configured in]. */
133 { {"environment", required_argument, NULL, OPTION_ENVIRONMENT},
134 '\0', "user|virtual|operating", "Set running environment",
135 standard_option_handler },
136#endif
137
138 { {"alignment", required_argument, NULL, OPTION_ALIGNMENT},
139 '\0', "strict|nonstrict|forced", "Set memory access alignment",
140 standard_option_handler },
141
142 { {"debug", no_argument, NULL, OPTION_DEBUG},
143 'D', NULL, "Print debugging messages",
144 standard_option_handler },
145 { {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN},
146 '\0', NULL, "Print instruction debugging messages",
147 standard_option_handler },
148 { {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE},
149 '\0', "FILE NAME", "Specify debugging output file",
150 standard_option_handler },
151
152#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
828c9ae6 153 { {"h8300h", no_argument, NULL, OPTION_H8300H},
a69146da 154 'h', NULL, "Indicate the CPU is H8/300H",
a8cdafbd
AV		 155 standard_option_handler },
156 { {"h8300s", no_argument, NULL, OPTION_H8300S},
a69146da 157 'S', NULL, "Indicate the CPU is H8S",
c906108c 158 standard_option_handler },
828c9ae6 159 { {"h8300sx", no_argument, NULL, OPTION_H8300SX},
a69146da 160 'x', NULL, "Indicate the CPU is H8SX",
828c9ae6 161 standard_option_handler },
c906108c
SS		 162#endif
163
164#ifdef SIM_HAVE_FLATMEM
165 { {"mem-size", required_argument, NULL, OPTION_MEM_SIZE},
f40f1a01
NC		 166 'm', "<size>[in bytes, Kb (k suffix), Mb (m suffix) or Gb (g suffix)]",
167 "Specify memory size", standard_option_handler },
c906108c
SS		 168#endif
169
170 { {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
171 '\0', "COMMAND", ""/*undocumented*/,
172 standard_option_handler },
173
174 { {"help", no_argument, NULL, OPTION_HELP},
175 'H', NULL, "Print help information",
176 standard_option_handler },
177
178 { {"architecture", required_argument, NULL, OPTION_ARCHITECTURE},
179 '\0', "MACHINE", "Specify the architecture to use",
180 standard_option_handler },
181 { {"architecture-info", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
182 '\0', NULL, "List supported architectures",
183 standard_option_handler },
184 { {"info-architecture", no_argument, NULL, OPTION_ARCHITECTURE_INFO},
185 '\0', NULL, NULL,
186 standard_option_handler },
187
188 { {"target", required_argument, NULL, OPTION_TARGET},
189 '\0', "BFDNAME", "Specify the object-code format for the object files",
190 standard_option_handler },
191
43e526b9
JM		 192#ifdef SIM_HANDLES_LMA
193 { {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
194 '\0', NULL,
195#if SIM_HANDLES_LMA
196 "Use VMA or LMA addresses when loading image (default LMA)",
197#else
198 "Use VMA or LMA addresses when loading image (default VMA)",
199#endif
200 standard_option_handler, "load-{lma,vma}" },
201 { {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
202 '\0', NULL, "", standard_option_handler, "" },
203#endif
204
027e2a04
HPN		 205 { {"sysroot", required_argument, NULL, OPTION_SYSROOT},
206 '\0', "SYSROOT",
207 "Root for system calls with absolute file-names and cwd at start",
208 standard_option_handler },
209
c906108c
SS		 210 { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
211};
212
213static SIM_RC
214standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt,
215 char *arg, int is_command)
216{
217 int i,n;
218
219 switch ((STANDARD_OPTIONS) opt)
220 {
221 case OPTION_VERBOSE:
222 STATE_VERBOSE_P (sd) = 1;
223 break;
224
c906108c
SS		 225 case OPTION_ENDIAN:
226 if (strcmp (arg, "big") == 0)
227 {
228 if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN)
229 {
230 sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
231 return SIM_RC_FAIL;
232 }
233 /* FIXME:wip: Need to set something in STATE_CONFIG. */
234 current_target_byte_order = BIG_ENDIAN;
235 }
236 else if (strcmp (arg, "little") == 0)
237 {
238 if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN)
239 {
240 sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
241 return SIM_RC_FAIL;
242 }
243 /* FIXME:wip: Need to set something in STATE_CONFIG. */
244 current_target_byte_order = LITTLE_ENDIAN;
245 }
246 else
247 {
248 sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
249 return SIM_RC_FAIL;
250 }
251 break;
c906108c
SS		 252
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;
260 else
261 {
262 sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg);
263 return SIM_RC_FAIL;
264 }
265 if (WITH_ENVIRONMENT != ALL_ENVIRONMENT
266 && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd))
267 {
268 char *type;
269 switch (WITH_ENVIRONMENT)
270 {
271 case USER_ENVIRONMENT: type = "user"; break;
272 case VIRTUAL_ENVIRONMENT: type = "virtual"; break;
273 case OPERATING_ENVIRONMENT: type = "operating"; break;
274 }
275 sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n",
276 type);
277 return SIM_RC_FAIL;
278 }
279 break;
280
281 case OPTION_ALIGNMENT:
282 if (strcmp (arg, "strict") == 0)
283 {
284 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT)
285 {
286 current_alignment = STRICT_ALIGNMENT;
287 break;
288 }
289 }
290 else if (strcmp (arg, "nonstrict") == 0)
291 {
292 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT)
293 {
294 current_alignment = NONSTRICT_ALIGNMENT;
295 break;
296 }
297 }
298 else if (strcmp (arg, "forced") == 0)
299 {
300 if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT)
301 {
302 current_alignment = FORCED_ALIGNMENT;
303 break;
304 }
305 }
306 else
307 {
308 sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg);
309 return SIM_RC_FAIL;
310 }
311 switch (WITH_ALIGNMENT)
312 {
313 case STRICT_ALIGNMENT:
314 sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n");
315 break;
316 case NONSTRICT_ALIGNMENT:
317 sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n");
318 break;
319 case FORCED_ALIGNMENT:
320 sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n");
321 break;
322 }
323 return SIM_RC_FAIL;
324
325 case OPTION_DEBUG:
326 if (! WITH_DEBUG)
327 sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
328 else
329 {
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;
333 }
334 break;
335
336 case OPTION_DEBUG_INSN :
337 if (! WITH_DEBUG)
338 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
339 else
340 {
341 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
342 CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
343 }
344 break;
345
346 case OPTION_DEBUG_FILE :
347 if (! WITH_DEBUG)
348 sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
349 else
350 {
351 FILE *f = fopen (arg, "w");
352
353 if (f == NULL)
354 {
355 sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
356 return SIM_RC_FAIL;
357 }
358 for (n = 0; n < MAX_NR_PROCESSORS; ++n)
359 CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
360 }
361 break;
362
363#ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */
828c9ae6
MS		 364 case OPTION_H8300H:
365 set_h8300h (bfd_mach_h8300h);
a8cdafbd
AV		 366 break;
367 case OPTION_H8300S:
828c9ae6
MS		 368 set_h8300h (bfd_mach_h8300s);
369 break;
370 case OPTION_H8300SX:
371 set_h8300h (bfd_mach_h8300sx);
c906108c
SS		 372 break;
373#endif
374
375#ifdef SIM_HAVE_FLATMEM
376 case OPTION_MEM_SIZE:
377 {
f40f1a01
NC		 378 char * endp;
379 unsigned long ul = strtol (arg, &endp, 0);
380
381 switch (* endp)
382 {
383 case 'k': case 'K': size <<= 10; break;
384 case 'm': case 'M': size <<= 20; break;
385 case 'g': case 'G': size <<= 30; break;
386 case ' ': case '\0': case '\t': break;
387 default:
388 if (ul > 0)
389 sim_io_eprintf (sd, "Ignoring strange character at end of memory size: %c\n", * endp);
390 break;
391 }
392
c906108c
SS		 393 /* 16384: some minimal amount */
394 if (! isdigit (arg[0]) || ul < 16384)
395 {
396 sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
397 return SIM_RC_FAIL;
398 }
399 STATE_MEM_SIZE (sd) = ul;
400 }
401 break;
402#endif
403
404 case OPTION_DO_COMMAND:
405 sim_do_command (sd, arg);
406 break;
407
408 case OPTION_ARCHITECTURE:
409 {
410 const struct bfd_arch_info *ap = bfd_scan_arch (arg);
411 if (ap == NULL)
412 {
413 sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg);
414 return SIM_RC_FAIL;
415 }
416 STATE_ARCHITECTURE (sd) = ap;
417 break;
418 }
419
420 case OPTION_ARCHITECTURE_INFO:
421 {
422 const char **list = bfd_arch_list();
423 const char **lp;
424 if (list == NULL)
425 abort ();
426 sim_io_printf (sd, "Possible architectures:");
427 for (lp = list; *lp != NULL; lp++)
428 sim_io_printf (sd, " %s", *lp);
429 sim_io_printf (sd, "\n");
430 free (list);
431 break;
432 }
433
434 case OPTION_TARGET:
435 {
436 STATE_TARGET (sd) = xstrdup (arg);
437 break;
438 }
439
43e526b9
JM		 440 case OPTION_LOAD_LMA:
441 {
442 STATE_LOAD_AT_LMA_P (sd) = 1;
443 break;
444 }
445
446 case OPTION_LOAD_VMA:
447 {
448 STATE_LOAD_AT_LMA_P (sd) = 0;
449 break;
450 }
451
c906108c
SS		 452 case OPTION_HELP:
453 sim_print_help (sd, is_command);
454 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
455 exit (0);
456 /* FIXME: 'twould be nice to do something similar if gdb. */
457 break;
027e2a04
HPN		 458
459 case OPTION_SYSROOT:
460 /* Don't leak memory in the odd event that there's lots of
461 --sysroot=... options. */
462 if (simulator_sysroot[0] != '\0' && arg[0] != '\0')
463 free (simulator_sysroot);
464 simulator_sysroot = xstrdup (arg);
465 break;
c906108c
SS		 466 }
467
468 return SIM_RC_OK;
469}
470
471/* Add the standard option list to the simulator. */
472
473SIM_RC
474standard_install (SIM_DESC sd)
475{
476 SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER);
477 if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK)
478 return SIM_RC_FAIL;
43e526b9
JM		 479#ifdef SIM_HANDLES_LMA
480 STATE_LOAD_AT_LMA_P (sd) = SIM_HANDLES_LMA;
481#endif
c906108c
SS		 482 return SIM_RC_OK;
483}
484
485/* Return non-zero if arg is a duplicate argument.
486 If ARG is NULL, initialize. */
487
488#define ARG_HASH_SIZE 97
489#define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
490
491static int
dc416615 492dup_arg_p (char *arg)
c906108c
SS		 493{
494 int hash;
495 static char **arg_table = NULL;
496
497 if (arg == NULL)
498 {
499 if (arg_table == NULL)
500 arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
501 memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
502 return 0;
503 }
504
505 hash = ARG_HASH (arg);
506 while (arg_table[hash] != NULL)
507 {
508 if (strcmp (arg, arg_table[hash]) == 0)
509 return 1;
510 /* We assume there won't be more than ARG_HASH_SIZE arguments so we
511 don't check if the table is full. */
512 if (++hash == ARG_HASH_SIZE)
513 hash = 0;
514 }
515 arg_table[hash] = arg;
516 return 0;
517}
518
519/* Called by sim_open to parse the arguments. */
520
521SIM_RC
dc416615 522sim_parse_args (SIM_DESC sd, char **argv)
c906108c
SS		 523{
524 int c, i, argc, num_opts;
525 char *p, *short_options;
526 /* The `val' option struct entry is dynamically assigned for options that
527 only come in the long form. ORIG_VAL is used to get the original value
528 back. */
529 int *orig_val;
530 struct option *lp, *long_options;
531 const struct option_list *ol;
532 const OPTION *opt;
533 OPTION_HANDLER **handlers;
534 sim_cpu **opt_cpu;
7c070881 535 SIM_RC result = SIM_RC_OK;
c906108c
SS		 536
537 /* Count the number of arguments. */
538 for (argc = 0; argv[argc] != NULL; ++argc)
539 continue;
540
541 /* Count the number of options. */
542 num_opts = 0;
543 for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
544 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
545 ++num_opts;
546 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
547 for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next)
548 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
549 ++num_opts;
550
551 /* Initialize duplicate argument checker. */
552 (void) dup_arg_p (NULL);
553
554 /* Build the option table for getopt. */
555
556 long_options = NZALLOC (struct option, num_opts + 1);
557 lp = long_options;
558 short_options = NZALLOC (char, num_opts * 3 + 1);
559 p = short_options;
560 handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts);
561 orig_val = NZALLOC (int, OPTION_START + num_opts);
562 opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts);
563
564 /* Set '+' as first char so argument permutation isn't done. This
565 is done to stop getopt_long returning options that appear after
566 the target program. Such options should be passed unchanged into
567 the program image. */
568 *p++ = '+';
569
570 for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
571 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
572 {
573 if (dup_arg_p (opt->opt.name))
574 continue;
575 if (opt->shortopt != 0)
576 {
577 *p++ = opt->shortopt;
578 if (opt->opt.has_arg == required_argument)
579 *p++ = ':';
580 else if (opt->opt.has_arg == optional_argument)
581 { *p++ = ':'; *p++ = ':'; }
582 handlers[(unsigned char) opt->shortopt] = opt->handler;
583 if (opt->opt.val != 0)
584 orig_val[(unsigned char) opt->shortopt] = opt->opt.val;
585 else
586 orig_val[(unsigned char) opt->shortopt] = opt->shortopt;
587 }
588 if (opt->opt.name != NULL)
589 {
590 *lp = opt->opt;
591 /* Dynamically assign `val' numbers for long options. */
592 lp->val = i++;
593 handlers[lp->val] = opt->handler;
594 orig_val[lp->val] = opt->opt.val;
595 opt_cpu[lp->val] = NULL;
596 ++lp;
597 }
598 }
599
600 for (c = 0; c < MAX_NR_PROCESSORS; ++c)
601 {
602 sim_cpu *cpu = STATE_CPU (sd, c);
603 for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next)
604 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
605 {
606#if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down
607 on the need for dup_arg_p checking. Maybe in the future it'll be
608 needed so this is just commented out, and not deleted. */
609 if (dup_arg_p (opt->opt.name))
610 continue;
611#endif
612 /* Don't allow short versions of cpu specific options for now. */
613 if (opt->shortopt != 0)
614 {
615 sim_io_eprintf (sd, "internal error, short cpu specific option");
7c070881
SC		 616 result = SIM_RC_FAIL;
617 break;
c906108c
SS		 618 }
619 if (opt->opt.name != NULL)
620 {
621 char *name;
622 *lp = opt->opt;
623 /* Prepend --<cpuname>- to the option. */
624 asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name);
625 lp->name = name;
626 /* Dynamically assign `val' numbers for long options. */
627 lp->val = i++;
628 handlers[lp->val] = opt->handler;
629 orig_val[lp->val] = opt->opt.val;
630 opt_cpu[lp->val] = cpu;
631 ++lp;
632 }
633 }
634 }
635
636 /* Terminate the short and long option lists. */
637 *p = 0;
638 lp->name = NULL;
639
640 /* Ensure getopt is initialized. */
641 optind = 0;
642
643 while (1)
644 {
645 int longind, optc;
646
647 optc = getopt_long (argc, argv, short_options, long_options, &longind);
648 if (optc == -1)
649 {
650 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
651 STATE_PROG_ARGV (sd) = dupargv (argv + optind);
652 break;
653 }
654 if (optc == '?')
7c070881
SC		 655 {
656 result = SIM_RC_FAIL;
657 break;
658 }
c906108c
SS		 659
660 if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
7c070881
SC		 661 {
662 result = SIM_RC_FAIL;
663 break;
664 }
c906108c
SS		 665 }
666
7c070881
SC		 667 zfree (long_options);
668 zfree (short_options);
669 zfree (handlers);
670 zfree (opt_cpu);
671 zfree (orig_val);
672 return result;
c906108c
SS		 673}
674
675/* Utility of sim_print_help to print a list of option tables. */
676
677static void
678print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command)
679{
680 const OPTION *opt;
681
682 for ( ; ol != NULL; ol = ol->next)
683 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
684 {
685 const int indent = 30;
686 int comma, len;
687 const OPTION *o;
688
689 if (dup_arg_p (opt->opt.name))
690 continue;
691
692 if (opt->doc == NULL)
693 continue;
694
695 if (opt->doc_name != NULL && opt->doc_name [0] == '\0')
696 continue;
697
698 sim_io_printf (sd, " ");
699
700 comma = 0;
701 len = 2;
702
703 /* list any short options (aliases) for the current OPT */
704 if (!is_command)
705 {
706 o = opt;
707 do
708 {
709 if (o->shortopt != '\0')
710 {
711 sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
712 len += (comma ? 2 : 0) + 2;
713 if (o->arg != NULL)
714 {
715 if (o->opt.has_arg == optional_argument)
716 {
717 sim_io_printf (sd, "[%s]", o->arg);
718 len += 1 + strlen (o->arg) + 1;
719 }
720 else
721 {
722 sim_io_printf (sd, " %s", o->arg);
723 len += 1 + strlen (o->arg);
724 }
725 }
726 comma = 1;
727 }
728 ++o;
729 }
730 while (OPTION_VALID_P (o) && o->doc == NULL);
731 }
732
733 /* list any long options (aliases) for the current OPT */
734 o = opt;
735 do
736 {
737 const char *name;
738 const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL;
739 if (o->doc_name != NULL)
740 name = o->doc_name;
741 else
742 name = o->opt.name;
743 if (name != NULL)
744 {
745 sim_io_printf (sd, "%s%s%s%s%s",
746 comma ? ", " : "",
747 is_command ? "" : "--",
748 cpu ? cpu_prefix : "",
749 cpu ? "-" : "",
750 name);
751 len += ((comma ? 2 : 0)
752 + (is_command ? 0 : 2)
753 + strlen (name));
754 if (o->arg != NULL)
755 {
756 if (o->opt.has_arg == optional_argument)
757 {
c4093a6a 758 sim_io_printf (sd, "[=%s]", o->arg);
c906108c
SS		 759 len += 2 + strlen (o->arg) + 1;
760 }
761 else
762 {
763 sim_io_printf (sd, " %s", o->arg);
764 len += 1 + strlen (o->arg);
765 }
766 }
767 comma = 1;
768 }
769 ++o;
770 }
771 while (OPTION_VALID_P (o) && o->doc == NULL);
772
773 if (len >= indent)
774 {
775 sim_io_printf (sd, "\n%*s", indent, "");
776 }
777 else
778 sim_io_printf (sd, "%*s", indent - len, "");
779
780 /* print the description, word wrap long lines */
781 {
782 const char *chp = opt->doc;
783 unsigned doc_width = 80 - indent;
784 while (strlen (chp) >= doc_width) /* some slack */
785 {
786 const char *end = chp + doc_width - 1;
787 while (end > chp && !isspace (*end))
788 end --;
789 if (end == chp)
790 end = chp + doc_width - 1;
e158f0a0
AC		 791 /* The cast should be ok - its distances between to
792 points in a string. */
793 sim_io_printf (sd, "%.*s\n%*s", (int) (end - chp), chp, indent,
794 "");
c906108c
SS		 795 chp = end;
796 while (isspace (*chp) && *chp != '\0')
797 chp++;
798 }
799 sim_io_printf (sd, "%s\n", chp);
800 }
801 }
802}
803
804/* Print help messages for the options. */
805
806void
dc416615 807sim_print_help (SIM_DESC sd, int is_command)
c906108c
SS		 808{
809 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
810 sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
811 STATE_MY_NAME (sd));
812
813 /* Initialize duplicate argument checker. */
814 (void) dup_arg_p (NULL);
815
816 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
817 sim_io_printf (sd, "Options:\n");
818 else
819 sim_io_printf (sd, "Commands:\n");
820
821 print_help (sd, NULL, STATE_OPTIONS (sd), is_command);
822 sim_io_printf (sd, "\n");
823
824 /* Print cpu-specific options. */
825 {
826 int i;
827
828 for (i = 0; i < MAX_NR_PROCESSORS; ++i)
829 {
830 sim_cpu *cpu = STATE_CPU (sd, i);
831 if (CPU_OPTIONS (cpu) == NULL)
832 continue;
833 sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu));
834 print_help (sd, cpu, CPU_OPTIONS (cpu), is_command);
835 sim_io_printf (sd, "\n");
836 }
837 }
838
839 sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n",
840 STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command");
841 sim_io_printf (sd, " may not be applicable\n");
842
843 if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
844 {
845 sim_io_printf (sd, "\n");
846 sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
847 sim_io_printf (sd, " Note: Very few simulators support this.\n");
848 }
849}
850
851/* Utility of sim_args_command to find the closest match for a command.
852 Commands that have "-" in them can be specified as separate words.
853 e.g. sim memory-region 0x800000,0x4000
854 or sim memory region 0x800000,0x4000
855 If CPU is non-null, use its option table list, otherwise use the main one.
856 *PARGI is where to start looking in ARGV. It is updated to point past
857 the found option. */
858
859static const OPTION *
860find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi)
861{
862 const struct option_list *ol;
863 const OPTION *opt;
864 /* most recent option match */
865 const OPTION *matching_opt = NULL;
866 int matching_argi = -1;
867
868 if (cpu)
869 ol = CPU_OPTIONS (cpu);
870 else
871 ol = STATE_OPTIONS (sd);
872
873 /* Skip passed elements specified by *PARGI. */
874 argv += *pargi;
875
876 for ( ; ol != NULL; ol = ol->next)
877 for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
878 {
879 int argi = 0;
880 const char *name = opt->opt.name;
881 if (name == NULL)
882 continue;
883 while (argv [argi] != NULL
884 && strncmp (name, argv [argi], strlen (argv [argi])) == 0)
885 {
886 name = &name [strlen (argv[argi])];
887 if (name [0] == '-')
888 {
889 /* leading match ...<a-b-c>-d-e-f - continue search */
890 name ++; /* skip `-' */
891 argi ++;
892 continue;
893 }
894 else if (name [0] == '\0')
895 {
896 /* exact match ...<a-b-c-d-e-f> - better than before? */
897 if (argi > matching_argi)
898 {
899 matching_argi = argi;
900 matching_opt = opt;
901 }
902 break;
903 }
904 else
905 break;
906 }
907 }
908
909 *pargi = matching_argi;
910 return matching_opt;
911}
912
913SIM_RC
914sim_args_command (SIM_DESC sd, char *cmd)
915{
916 /* something to do? */
917 if (cmd == NULL)
109d3db3 918 return SIM_RC_OK; /* FIXME - perhaps help would be better */
c906108c
SS		 919
920 if (cmd [0] == '-')
921 {
922 /* user specified -<opt> ... form? */
923 char **argv = buildargv (cmd);
924 SIM_RC rc = sim_parse_args (sd, argv);
925 freeargv (argv);
926 return rc;
927 }
928 else
929 {
930 char **argv = buildargv (cmd);
931 const OPTION *matching_opt = NULL;
932 int matching_argi;
933 sim_cpu *cpu;
934
935 if (argv [0] == NULL)
109d3db3 936 return SIM_RC_OK; /* FIXME - perhaps help would be better */
c906108c
SS		 937
938 /* First check for a cpu selector. */
939 {
940 char *cpu_name = xstrdup (argv[0]);
941 char *hyphen = strchr (cpu_name, '-');
942 if (hyphen)
943 *hyphen = 0;
944 cpu = sim_cpu_lookup (sd, cpu_name);
945 if (cpu)
946 {
947 /* If <cpuname>-<command>, point argv[0] at <command>. */
948 if (hyphen)
949 {
950 matching_argi = 0;
951 argv[0] += hyphen - cpu_name + 1;
952 }
953 else
954 matching_argi = 1;
955 matching_opt = find_match (sd, cpu, argv, &matching_argi);
956 /* If hyphen found restore argv[0]. */
957 if (hyphen)
958 argv[0] -= hyphen - cpu_name + 1;
959 }
960 free (cpu_name);
961 }
962
963 /* If that failed, try the main table. */
964 if (matching_opt == NULL)
965 {
966 matching_argi = 0;
967 matching_opt = find_match (sd, NULL, argv, &matching_argi);
968 }
969
970 if (matching_opt != NULL)
971 {
972 switch (matching_opt->opt.has_arg)
973 {
974 case no_argument:
975 if (argv [matching_argi + 1] == NULL)
976 matching_opt->handler (sd, cpu, matching_opt->opt.val,
977 NULL, 1/*is_command*/);
978 else
979 sim_io_eprintf (sd, "Command `%s' takes no arguments\n",
980 matching_opt->opt.name);
981 break;
982 case optional_argument:
983 if (argv [matching_argi + 1] == NULL)
984 matching_opt->handler (sd, cpu, matching_opt->opt.val,
985 NULL, 1/*is_command*/);
986 else if (argv [matching_argi + 2] == NULL)
987 matching_opt->handler (sd, cpu, matching_opt->opt.val,
988 argv [matching_argi + 1], 1/*is_command*/);
989 else
990 sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n",
991 matching_opt->opt.name);
992 break;
993 case required_argument:
994 if (argv [matching_argi + 1] == NULL)
995 sim_io_eprintf (sd, "Command `%s' requires an argument\n",
996 matching_opt->opt.name);
997 else if (argv [matching_argi + 2] == NULL)
998 matching_opt->handler (sd, cpu, matching_opt->opt.val,
999 argv [matching_argi + 1], 1/*is_command*/);
1000 else
1001 sim_io_eprintf (sd, "Command `%s' requires only one argument\n",
1002 matching_opt->opt.name);
1003 }
1004 freeargv (argv);
1005 return SIM_RC_OK;
1006 }
1007
1008 freeargv (argv);
1009 }
1010
1011 /* didn't find anything that remotly matched */
1012 return SIM_RC_FAIL;
1013}
GDB Binutils - Deliverables
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