diff options
Diffstat (limited to 'sim/common/sim-options.c')
| -rw-r--r-- | sim/common/sim-options.c | 936 |
1 files changed, 936 insertions, 0 deletions
diff --git a/sim/common/sim-options.c b/sim/common/sim-options.c new file mode 100644 index 0000000..b49256b --- /dev/null +++ b/sim/common/sim-options.c @@ -0,0 +1,936 @@ +/* Simulator option handling. + Copyright (C) 1996, 1997 Free Software Foundation, Inc. + Contributed by Cygnus Support. + +This file is part of GDB, the GNU debugger. + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#include "sim-main.h" +#ifdef HAVE_STRING_H +#include <string.h> +#else +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#include <ctype.h> +#include "libiberty.h" +#include "sim-options.h" +#include "sim-io.h" +#include "sim-assert.h" + +#include "bfd.h" + +/* Add a set of options to the simulator. + TABLE is an array of OPTIONS terminated by a NULL `opt.name' entry. + This is intended to be called by modules in their `install' handler. */ + +SIM_RC +sim_add_option_table (SIM_DESC sd, sim_cpu *cpu, const OPTION *table) +{ + struct option_list *ol = ((struct option_list *) + xmalloc (sizeof (struct option_list))); + + /* Note: The list is constructed in the reverse order we're called so + later calls will override earlier ones (in case that ever happens). + This is the intended behaviour. */ + + if (cpu) + { + ol->next = CPU_OPTIONS (cpu); + ol->options = table; + CPU_OPTIONS (cpu) = ol; + } + else + { + ol->next = STATE_OPTIONS (sd); + ol->options = table; + STATE_OPTIONS (sd) = ol; + } + + return SIM_RC_OK; +} + +/* Standard option table. + Modules may specify additional ones. + The caller of sim_parse_args may also specify additional options + by calling sim_add_option_table first. */ + +static DECLARE_OPTION_HANDLER (standard_option_handler); + +/* FIXME: We shouldn't print in --help output options that aren't usable. + Some fine tuning will be necessary. One can either move less general + options to another table or use a HAVE_FOO macro to ifdef out unavailable + options. */ + +/* ??? One might want to conditionally compile out the entries that + aren't enabled. There's a distinction, however, between options a + simulator can't support and options that haven't been configured in. + Certainly options a simulator can't support shouldn't appear in the + output of --help. Whether the same thing applies to options that haven't + been configured in or not isn't something I can get worked up over. + [Note that conditionally compiling them out might simply involve moving + the option to another table.] + If you decide to conditionally compile them out as well, delete this + comment and add a comment saying that that is the rule. */ + +typedef enum { + OPTION_DEBUG_INSN = OPTION_START, + OPTION_DEBUG_FILE, + OPTION_DO_COMMAND, + OPTION_ARCHITECTURE, + OPTION_TARGET, + OPTION_ARCHITECTURE_INFO, + OPTION_ENVIRONMENT, + OPTION_ALIGNMENT, + OPTION_VERBOSE, +#if defined (SIM_HAVE_BIENDIAN) + OPTION_ENDIAN, +#endif + OPTION_DEBUG, +#ifdef SIM_HAVE_FLATMEM + OPTION_MEM_SIZE, +#endif + OPTION_HELP, +#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */ + OPTION_H8300, +#endif +} STANDARD_OPTIONS; + +static const OPTION standard_options[] = +{ + { {"verbose", no_argument, NULL, OPTION_VERBOSE}, + 'v', NULL, "Verbose output", + standard_option_handler }, + +#if defined (SIM_HAVE_BIENDIAN) /* ??? && WITH_TARGET_BYTE_ORDER == 0 */ + { {"endian", required_argument, NULL, OPTION_ENDIAN}, + 'E', "big|little", "Set endianness", + standard_option_handler }, +#endif + +#ifdef SIM_HAVE_ENVIRONMENT + /* This option isn't supported unless all choices are supported in keeping + with the goal of not printing in --help output things the simulator can't + do [as opposed to things that just haven't been configured in]. */ + { {"environment", required_argument, NULL, OPTION_ENVIRONMENT}, + '\0', "user|virtual|operating", "Set running environment", + standard_option_handler }, +#endif + + { {"alignment", required_argument, NULL, OPTION_ALIGNMENT}, + '\0', "strict|nonstrict|forced", "Set memory access alignment", + standard_option_handler }, + + { {"debug", no_argument, NULL, OPTION_DEBUG}, + 'D', NULL, "Print debugging messages", + standard_option_handler }, + { {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN}, + '\0', NULL, "Print instruction debugging messages", + standard_option_handler }, + { {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE}, + '\0', "FILE NAME", "Specify debugging output file", + standard_option_handler }, + +#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */ + { {"h8300h", no_argument, NULL, OPTION_H8300}, + 'h', NULL, "Indicate the CPU is h8/300h or h8/300s", + standard_option_handler }, +#endif + +#ifdef SIM_HAVE_FLATMEM + { {"mem-size", required_argument, NULL, OPTION_MEM_SIZE}, + 'm', "MEMORY SIZE", "Specify memory size", + standard_option_handler }, +#endif + + { {"do-command", required_argument, NULL, OPTION_DO_COMMAND}, + '\0', "COMMAND", ""/*undocumented*/, + standard_option_handler }, + + { {"help", no_argument, NULL, OPTION_HELP}, + 'H', NULL, "Print help information", + standard_option_handler }, + + { {"architecture", required_argument, NULL, OPTION_ARCHITECTURE}, + '\0', "MACHINE", "Specify the architecture to use", + standard_option_handler }, + { {"architecture-info", no_argument, NULL, OPTION_ARCHITECTURE_INFO}, + '\0', NULL, "List supported architectures", + standard_option_handler }, + { {"info-architecture", no_argument, NULL, OPTION_ARCHITECTURE_INFO}, + '\0', NULL, NULL, + standard_option_handler }, + + { {"target", required_argument, NULL, OPTION_TARGET}, + '\0', "BFDNAME", "Specify the object-code format for the object files", + standard_option_handler }, + + { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } +}; + +static SIM_RC +standard_option_handler (SIM_DESC sd, sim_cpu *cpu, int opt, + char *arg, int is_command) +{ + int i,n; + + switch ((STANDARD_OPTIONS) opt) + { + case OPTION_VERBOSE: + STATE_VERBOSE_P (sd) = 1; + break; + +#ifdef SIM_HAVE_BIENDIAN + case OPTION_ENDIAN: + if (strcmp (arg, "big") == 0) + { + if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN) + { + sim_io_eprintf (sd, "Simulator compiled for little endian only.\n"); + return SIM_RC_FAIL; + } + /* FIXME:wip: Need to set something in STATE_CONFIG. */ + current_target_byte_order = BIG_ENDIAN; + } + else if (strcmp (arg, "little") == 0) + { + if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN) + { + sim_io_eprintf (sd, "Simulator compiled for big endian only.\n"); + return SIM_RC_FAIL; + } + /* FIXME:wip: Need to set something in STATE_CONFIG. */ + current_target_byte_order = LITTLE_ENDIAN; + } + else + { + sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg); + return SIM_RC_FAIL; + } + break; +#endif + + case OPTION_ENVIRONMENT: + if (strcmp (arg, "user") == 0) + STATE_ENVIRONMENT (sd) = USER_ENVIRONMENT; + else if (strcmp (arg, "virtual") == 0) + STATE_ENVIRONMENT (sd) = VIRTUAL_ENVIRONMENT; + else if (strcmp (arg, "operating") == 0) + STATE_ENVIRONMENT (sd) = OPERATING_ENVIRONMENT; + else + { + sim_io_eprintf (sd, "Invalid environment specification `%s'\n", arg); + return SIM_RC_FAIL; + } + if (WITH_ENVIRONMENT != ALL_ENVIRONMENT + && WITH_ENVIRONMENT != STATE_ENVIRONMENT (sd)) + { + char *type; + switch (WITH_ENVIRONMENT) + { + case USER_ENVIRONMENT: type = "user"; break; + case VIRTUAL_ENVIRONMENT: type = "virtual"; break; + case OPERATING_ENVIRONMENT: type = "operating"; break; + } + sim_io_eprintf (sd, "Simulator compiled for the %s environment only.\n", + type); + return SIM_RC_FAIL; + } + break; + + case OPTION_ALIGNMENT: + if (strcmp (arg, "strict") == 0) + { + if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == STRICT_ALIGNMENT) + { + current_alignment = STRICT_ALIGNMENT; + break; + } + } + else if (strcmp (arg, "nonstrict") == 0) + { + if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == NONSTRICT_ALIGNMENT) + { + current_alignment = NONSTRICT_ALIGNMENT; + break; + } + } + else if (strcmp (arg, "forced") == 0) + { + if (WITH_ALIGNMENT == 0 || WITH_ALIGNMENT == FORCED_ALIGNMENT) + { + current_alignment = FORCED_ALIGNMENT; + break; + } + } + else + { + sim_io_eprintf (sd, "Invalid alignment specification `%s'\n", arg); + return SIM_RC_FAIL; + } + switch (WITH_ALIGNMENT) + { + case STRICT_ALIGNMENT: + sim_io_eprintf (sd, "Simulator compiled for strict alignment only.\n"); + break; + case NONSTRICT_ALIGNMENT: + sim_io_eprintf (sd, "Simulator compiled for nonstrict alignment only.\n"); + break; + case FORCED_ALIGNMENT: + sim_io_eprintf (sd, "Simulator compiled for forced alignment only.\n"); + break; + } + return SIM_RC_FAIL; + + case OPTION_DEBUG: + if (! WITH_DEBUG) + sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n"); + else + { + for (n = 0; n < MAX_NR_PROCESSORS; ++n) + for (i = 0; i < MAX_DEBUG_VALUES; ++i) + CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1; + } + break; + + case OPTION_DEBUG_INSN : + if (! WITH_DEBUG) + sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n"); + else + { + for (n = 0; n < MAX_NR_PROCESSORS; ++n) + CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1; + } + break; + + case OPTION_DEBUG_FILE : + if (! WITH_DEBUG) + sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n"); + else + { + FILE *f = fopen (arg, "w"); + + if (f == NULL) + { + sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg); + return SIM_RC_FAIL; + } + for (n = 0; n < MAX_NR_PROCESSORS; ++n) + CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f; + } + break; + +#ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */ + case OPTION_H8300: + set_h8300h (1); + break; +#endif + +#ifdef SIM_HAVE_FLATMEM + case OPTION_MEM_SIZE: + { + unsigned long ul = strtol (arg, NULL, 0); + /* 16384: some minimal amount */ + if (! isdigit (arg[0]) || ul < 16384) + { + sim_io_eprintf (sd, "Invalid memory size `%s'", arg); + return SIM_RC_FAIL; + } + STATE_MEM_SIZE (sd) = ul; + } + break; +#endif + + case OPTION_DO_COMMAND: + sim_do_command (sd, arg); + break; + + case OPTION_ARCHITECTURE: + { + const struct bfd_arch_info *ap = bfd_scan_arch (arg); + if (ap == NULL) + { + sim_io_eprintf (sd, "Architecture `%s' unknown\n", arg); + return SIM_RC_FAIL; + } + STATE_ARCHITECTURE (sd) = ap; + break; + } + + case OPTION_ARCHITECTURE_INFO: + { + const char **list = bfd_arch_list(); + const char **lp; + if (list == NULL) + abort (); + sim_io_printf (sd, "Possible architectures:"); + for (lp = list; *lp != NULL; lp++) + sim_io_printf (sd, " %s", *lp); + sim_io_printf (sd, "\n"); + free (list); + break; + } + + case OPTION_TARGET: + { + STATE_TARGET (sd) = xstrdup (arg); + break; + } + + case OPTION_HELP: + sim_print_help (sd, is_command); + if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE) + exit (0); + /* FIXME: 'twould be nice to do something similar if gdb. */ + break; + } + + return SIM_RC_OK; +} + +/* Add the standard option list to the simulator. */ + +SIM_RC +standard_install (SIM_DESC sd) +{ + SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); + if (sim_add_option_table (sd, NULL, standard_options) != SIM_RC_OK) + return SIM_RC_FAIL; + return SIM_RC_OK; +} + +/* Return non-zero if arg is a duplicate argument. + If ARG is NULL, initialize. */ + +#define ARG_HASH_SIZE 97 +#define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE) + +static int +dup_arg_p (arg) + char *arg; +{ + int hash; + static char **arg_table = NULL; + + if (arg == NULL) + { + if (arg_table == NULL) + arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *)); + memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *)); + return 0; + } + + hash = ARG_HASH (arg); + while (arg_table[hash] != NULL) + { + if (strcmp (arg, arg_table[hash]) == 0) + return 1; + /* We assume there won't be more than ARG_HASH_SIZE arguments so we + don't check if the table is full. */ + if (++hash == ARG_HASH_SIZE) + hash = 0; + } + arg_table[hash] = arg; + return 0; +} + +/* Called by sim_open to parse the arguments. */ + +SIM_RC +sim_parse_args (sd, argv) + SIM_DESC sd; + char **argv; +{ + int c, i, argc, num_opts; + char *p, *short_options; + /* The `val' option struct entry is dynamically assigned for options that + only come in the long form. ORIG_VAL is used to get the original value + back. */ + int *orig_val; + struct option *lp, *long_options; + const struct option_list *ol; + const OPTION *opt; + OPTION_HANDLER **handlers; + sim_cpu **opt_cpu; + + /* Count the number of arguments. */ + for (argc = 0; argv[argc] != NULL; ++argc) + continue; + + /* Count the number of options. */ + num_opts = 0; + for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + ++num_opts; + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + for (ol = CPU_OPTIONS (STATE_CPU (sd, i)); ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + ++num_opts; + + /* Initialize duplicate argument checker. */ + (void) dup_arg_p (NULL); + + /* Build the option table for getopt. */ + + long_options = NZALLOC (struct option, num_opts + 1); + lp = long_options; + short_options = NZALLOC (char, num_opts * 3 + 1); + p = short_options; + handlers = NZALLOC (OPTION_HANDLER *, OPTION_START + num_opts); + orig_val = NZALLOC (int, OPTION_START + num_opts); + opt_cpu = NZALLOC (sim_cpu *, OPTION_START + num_opts); + + /* Set '+' as first char so argument permutation isn't done. This + is done to stop getopt_long returning options that appear after + the target program. Such options should be passed unchanged into + the program image. */ + *p++ = '+'; + + for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + { + if (dup_arg_p (opt->opt.name)) + continue; + if (opt->shortopt != 0) + { + *p++ = opt->shortopt; + if (opt->opt.has_arg == required_argument) + *p++ = ':'; + else if (opt->opt.has_arg == optional_argument) + { *p++ = ':'; *p++ = ':'; } + handlers[(unsigned char) opt->shortopt] = opt->handler; + if (opt->opt.val != 0) + orig_val[(unsigned char) opt->shortopt] = opt->opt.val; + else + orig_val[(unsigned char) opt->shortopt] = opt->shortopt; + } + if (opt->opt.name != NULL) + { + *lp = opt->opt; + /* Dynamically assign `val' numbers for long options. */ + lp->val = i++; + handlers[lp->val] = opt->handler; + orig_val[lp->val] = opt->opt.val; + opt_cpu[lp->val] = NULL; + ++lp; + } + } + + for (c = 0; c < MAX_NR_PROCESSORS; ++c) + { + sim_cpu *cpu = STATE_CPU (sd, c); + for (ol = CPU_OPTIONS (cpu); ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + { +#if 0 /* Each option is prepended with --<cpuname>- so this greatly cuts down + on the need for dup_arg_p checking. Maybe in the future it'll be + needed so this is just commented out, and not deleted. */ + if (dup_arg_p (opt->opt.name)) + continue; +#endif + /* Don't allow short versions of cpu specific options for now. */ + if (opt->shortopt != 0) + { + sim_io_eprintf (sd, "internal error, short cpu specific option"); + return SIM_RC_FAIL; + } + if (opt->opt.name != NULL) + { + char *name; + *lp = opt->opt; + /* Prepend --<cpuname>- to the option. */ + asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name); + lp->name = name; + /* Dynamically assign `val' numbers for long options. */ + lp->val = i++; + handlers[lp->val] = opt->handler; + orig_val[lp->val] = opt->opt.val; + opt_cpu[lp->val] = cpu; + ++lp; + } + } + } + + /* Terminate the short and long option lists. */ + *p = 0; + lp->name = NULL; + + /* Ensure getopt is initialized. */ + optind = 0; + + while (1) + { + int longind, optc; + + optc = getopt_long (argc, argv, short_options, long_options, &longind); + if (optc == -1) + { + if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE) + STATE_PROG_ARGV (sd) = dupargv (argv + optind); + break; + } + if (optc == '?') + return SIM_RC_FAIL; + + if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL) + return SIM_RC_FAIL; + } + + return SIM_RC_OK; +} + +/* Utility of sim_print_help to print a list of option tables. */ + +static void +print_help (SIM_DESC sd, sim_cpu *cpu, const struct option_list *ol, int is_command) +{ + const OPTION *opt; + + for ( ; ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + { + const int indent = 30; + int comma, len; + const OPTION *o; + + if (dup_arg_p (opt->opt.name)) + continue; + + if (opt->doc == NULL) + continue; + + if (opt->doc_name != NULL && opt->doc_name [0] == '\0') + continue; + + sim_io_printf (sd, " "); + + comma = 0; + len = 2; + + /* list any short options (aliases) for the current OPT */ + if (!is_command) + { + o = opt; + do + { + if (o->shortopt != '\0') + { + sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt); + len += (comma ? 2 : 0) + 2; + if (o->arg != NULL) + { + if (o->opt.has_arg == optional_argument) + { + sim_io_printf (sd, "[%s]", o->arg); + len += 1 + strlen (o->arg) + 1; + } + else + { + sim_io_printf (sd, " %s", o->arg); + len += 1 + strlen (o->arg); + } + } + comma = 1; + } + ++o; + } + while (OPTION_VALID_P (o) && o->doc == NULL); + } + + /* list any long options (aliases) for the current OPT */ + o = opt; + do + { + const char *name; + const char *cpu_prefix = cpu ? CPU_NAME (cpu) : NULL; + if (o->doc_name != NULL) + name = o->doc_name; + else + name = o->opt.name; + if (name != NULL) + { + sim_io_printf (sd, "%s%s%s%s%s", + comma ? ", " : "", + is_command ? "" : "--", + cpu ? cpu_prefix : "", + cpu ? "-" : "", + name); + len += ((comma ? 2 : 0) + + (is_command ? 0 : 2) + + strlen (name)); + if (o->arg != NULL) + { + if (o->opt.has_arg == optional_argument) + { + sim_io_printf (sd, " [%s]", o->arg); + len += 2 + strlen (o->arg) + 1; + } + else + { + sim_io_printf (sd, " %s", o->arg); + len += 1 + strlen (o->arg); + } + } + comma = 1; + } + ++o; + } + while (OPTION_VALID_P (o) && o->doc == NULL); + + if (len >= indent) + { + sim_io_printf (sd, "\n%*s", indent, ""); + } + else + sim_io_printf (sd, "%*s", indent - len, ""); + + /* print the description, word wrap long lines */ + { + const char *chp = opt->doc; + unsigned doc_width = 80 - indent; + while (strlen (chp) >= doc_width) /* some slack */ + { + const char *end = chp + doc_width - 1; + while (end > chp && !isspace (*end)) + end --; + if (end == chp) + end = chp + doc_width - 1; + sim_io_printf (sd, "%.*s\n%*s", end - chp, chp, indent, ""); + chp = end; + while (isspace (*chp) && *chp != '\0') + chp++; + } + sim_io_printf (sd, "%s\n", chp); + } + } +} + +/* Print help messages for the options. */ + +void +sim_print_help (sd, is_command) + SIM_DESC sd; + int is_command; +{ + if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE) + sim_io_printf (sd, "Usage: %s [options] program [program args]\n", + STATE_MY_NAME (sd)); + + /* Initialize duplicate argument checker. */ + (void) dup_arg_p (NULL); + + if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE) + sim_io_printf (sd, "Options:\n"); + else + sim_io_printf (sd, "Commands:\n"); + + print_help (sd, NULL, STATE_OPTIONS (sd), is_command); + sim_io_printf (sd, "\n"); + + /* Print cpu-specific options. */ + { + int i; + + for (i = 0; i < MAX_NR_PROCESSORS; ++i) + { + sim_cpu *cpu = STATE_CPU (sd, i); + if (CPU_OPTIONS (cpu) == NULL) + continue; + sim_io_printf (sd, "CPU %s specific options:\n", CPU_NAME (cpu)); + print_help (sd, cpu, CPU_OPTIONS (cpu), is_command); + sim_io_printf (sd, "\n"); + } + } + + sim_io_printf (sd, "Note: Depending on the simulator configuration some %ss\n", + STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE ? "option" : "command"); + sim_io_printf (sd, " may not be applicable\n"); + + if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE) + { + sim_io_printf (sd, "\n"); + sim_io_printf (sd, "program args Arguments to pass to simulated program.\n"); + sim_io_printf (sd, " Note: Very few simulators support this.\n"); + } +} + +/* Utility of sim_args_command to find the closest match for a command. + Commands that have "-" in them can be specified as separate words. + e.g. sim memory-region 0x800000,0x4000 + or sim memory region 0x800000,0x4000 + If CPU is non-null, use its option table list, otherwise use the main one. + *PARGI is where to start looking in ARGV. It is updated to point past + the found option. */ + +static const OPTION * +find_match (SIM_DESC sd, sim_cpu *cpu, char *argv[], int *pargi) +{ + const struct option_list *ol; + const OPTION *opt; + /* most recent option match */ + const OPTION *matching_opt = NULL; + int matching_argi = -1; + + if (cpu) + ol = CPU_OPTIONS (cpu); + else + ol = STATE_OPTIONS (sd); + + /* Skip passed elements specified by *PARGI. */ + argv += *pargi; + + for ( ; ol != NULL; ol = ol->next) + for (opt = ol->options; OPTION_VALID_P (opt); ++opt) + { + int argi = 0; + const char *name = opt->opt.name; + if (name == NULL) + continue; + while (argv [argi] != NULL + && strncmp (name, argv [argi], strlen (argv [argi])) == 0) + { + name = &name [strlen (argv[argi])]; + if (name [0] == '-') + { + /* leading match ...<a-b-c>-d-e-f - continue search */ + name ++; /* skip `-' */ + argi ++; + continue; + } + else if (name [0] == '\0') + { + /* exact match ...<a-b-c-d-e-f> - better than before? */ + if (argi > matching_argi) + { + matching_argi = argi; + matching_opt = opt; + } + break; + } + else + break; + } + } + + *pargi = matching_argi; + return matching_opt; +} + +SIM_RC +sim_args_command (SIM_DESC sd, char *cmd) +{ + /* something to do? */ + if (cmd == NULL) + return SIM_RC_OK; /* FIXME - perhaphs help would be better */ + + if (cmd [0] == '-') + { + /* user specified -<opt> ... form? */ + char **argv = buildargv (cmd); + SIM_RC rc = sim_parse_args (sd, argv); + freeargv (argv); + return rc; + } + else + { + char **argv = buildargv (cmd); + const OPTION *matching_opt = NULL; + int matching_argi; + sim_cpu *cpu; + + if (argv [0] == NULL) + return SIM_RC_OK; /* FIXME - perhaphs help would be better */ + + /* First check for a cpu selector. */ + { + char *cpu_name = xstrdup (argv[0]); + char *hyphen = strchr (cpu_name, '-'); + if (hyphen) + *hyphen = 0; + cpu = sim_cpu_lookup (sd, cpu_name); + if (cpu) + { + /* If <cpuname>-<command>, point argv[0] at <command>. */ + if (hyphen) + { + matching_argi = 0; + argv[0] += hyphen - cpu_name + 1; + } + else + matching_argi = 1; + matching_opt = find_match (sd, cpu, argv, &matching_argi); + /* If hyphen found restore argv[0]. */ + if (hyphen) + argv[0] -= hyphen - cpu_name + 1; + } + free (cpu_name); + } + + /* If that failed, try the main table. */ + if (matching_opt == NULL) + { + matching_argi = 0; + matching_opt = find_match (sd, NULL, argv, &matching_argi); + } + + if (matching_opt != NULL) + { + switch (matching_opt->opt.has_arg) + { + case no_argument: + if (argv [matching_argi + 1] == NULL) + matching_opt->handler (sd, cpu, matching_opt->opt.val, + NULL, 1/*is_command*/); + else + sim_io_eprintf (sd, "Command `%s' takes no arguments\n", + matching_opt->opt.name); + break; + case optional_argument: + if (argv [matching_argi + 1] == NULL) + matching_opt->handler (sd, cpu, matching_opt->opt.val, + NULL, 1/*is_command*/); + else if (argv [matching_argi + 2] == NULL) + matching_opt->handler (sd, cpu, matching_opt->opt.val, + argv [matching_argi + 1], 1/*is_command*/); + else + sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n", + matching_opt->opt.name); + break; + case required_argument: + if (argv [matching_argi + 1] == NULL) + sim_io_eprintf (sd, "Command `%s' requires an argument\n", + matching_opt->opt.name); + else if (argv [matching_argi + 2] == NULL) + matching_opt->handler (sd, cpu, matching_opt->opt.val, + argv [matching_argi + 1], 1/*is_command*/); + else + sim_io_eprintf (sd, "Command `%s' requires only one argument\n", + matching_opt->opt.name); + } + freeargv (argv); + return SIM_RC_OK; + } + + freeargv (argv); + } + + /* didn't find anything that remotly matched */ + return SIM_RC_FAIL; +} |