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binutils-gdb/sim/common/sim-options.c

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/* Simulator option handling.
Copyright (C) 1996-2015 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 3 of the License, 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, see <http://www.gnu.org/licenses/>. */
#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 "version.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,
OPTION_ENDIAN,
OPTION_DEBUG,
#ifdef SIM_HAVE_FLATMEM
OPTION_MEM_SIZE,
#endif
OPTION_HELP,
OPTION_VERSION,
#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
OPTION_H8300H,
OPTION_H8300S,
OPTION_H8300SX,
#endif
OPTION_LOAD_LMA,
OPTION_LOAD_VMA,
OPTION_SYSROOT
} STANDARD_OPTIONS;
static const OPTION standard_options[] =
{
{ {"verbose", no_argument, NULL, OPTION_VERBOSE},
'v', NULL, "Verbose output",
standard_option_handler, NULL },
{ {"endian", required_argument, NULL, OPTION_ENDIAN},
'E', "big|little", "Set endianness",
standard_option_handler, NULL },
#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_H8300H},
'h', NULL, "Indicate the CPU is H8/300H",
standard_option_handler },
{ {"h8300s", no_argument, NULL, OPTION_H8300S},
'S', NULL, "Indicate the CPU is H8S",
standard_option_handler },
{ {"h8300sx", no_argument, NULL, OPTION_H8300SX},
'x', NULL, "Indicate the CPU is H8SX",
standard_option_handler },
#endif
#ifdef SIM_HAVE_FLATMEM
{ {"mem-size", required_argument, NULL, OPTION_MEM_SIZE},
'm', "<size>[in bytes, Kb (k suffix), Mb (m suffix) or Gb (g suffix)]",
"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 },
{ {"version", no_argument, NULL, OPTION_VERSION},
'\0', NULL, "Print version 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 },
#ifdef SIM_HANDLES_LMA
{ {"load-lma", no_argument, NULL, OPTION_LOAD_LMA},
'\0', NULL,
#if SIM_HANDLES_LMA
"Use VMA or LMA addresses when loading image (default LMA)",
#else
"Use VMA or LMA addresses when loading image (default VMA)",
#endif
standard_option_handler, "load-{lma,vma}" },
{ {"load-vma", no_argument, NULL, OPTION_LOAD_VMA},
'\0', NULL, "", standard_option_handler, "" },
#endif
{ {"sysroot", required_argument, NULL, OPTION_SYSROOT},
'\0', "SYSROOT",
"Root for system calls with absolute file-names and cwd at start",
standard_option_handler, NULL },
{ {NULL, no_argument, NULL, 0}, '\0', NULL, 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;
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;
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))
{
const 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_H8300H:
set_h8300h (bfd_mach_h8300h);
break;
case OPTION_H8300S:
set_h8300h (bfd_mach_h8300s);
break;
case OPTION_H8300SX:
set_h8300h (bfd_mach_h8300sx);
break;
#endif
#ifdef SIM_HAVE_FLATMEM
case OPTION_MEM_SIZE:
{
char * endp;
unsigned long ul = strtol (arg, &endp, 0);
switch (* endp)
{
case 'k': case 'K': size <<= 10; break;
case 'm': case 'M': size <<= 20; break;
case 'g': case 'G': size <<= 30; break;
case ' ': case '\0': case '\t': break;
default:
if (ul > 0)
sim_io_eprintf (sd, "Ignoring strange character at end of memory size: %c\n", * endp);
break;
}
/* 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_LOAD_LMA:
{
STATE_LOAD_AT_LMA_P (sd) = 1;
break;
}
case OPTION_LOAD_VMA:
{
STATE_LOAD_AT_LMA_P (sd) = 0;
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;
case OPTION_VERSION:
sim_io_printf (sd, "GNU simulator %s%s\n", PKGVERSION, version);
if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
exit (0);
break;
case OPTION_SYSROOT:
/* Don't leak memory in the odd event that there's lots of
--sysroot=... options. We treat "" specially since this
is the statically initialized value and cannot free it. */
if (simulator_sysroot[0] != '\0')
free (simulator_sysroot);
if (arg[0] != '\0')
simulator_sysroot = xstrdup (arg);
else
simulator_sysroot = "";
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;
#ifdef SIM_HANDLES_LMA
STATE_LOAD_AT_LMA_P (sd) = SIM_HANDLES_LMA;
#endif
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 (const char *arg)
{
int hash;
static const char **arg_table = NULL;
if (arg == NULL)
{
if (arg_table == NULL)
arg_table = (const 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 (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;
SIM_RC result = SIM_RC_OK;
/* 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");
result = SIM_RC_FAIL;
break;
}
if (opt->opt.name != NULL)
{
char *name;
*lp = opt->opt;
/* Prepend --<cpuname>- to the option. */
if (asprintf (&name, "%s-%s", CPU_NAME (cpu), lp->name) < 0)
{
sim_io_eprintf (sd, "internal error, out of memory");
result = SIM_RC_FAIL;
break;
}
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 == '?')
{
result = SIM_RC_FAIL;
break;
}
if ((*handlers[optc]) (sd, opt_cpu[optc], orig_val[optc], optarg, 0/*!is_command*/) == SIM_RC_FAIL)
{
result = SIM_RC_FAIL;
break;
}
}
free (long_options);
free (short_options);
free (handlers);
free (opt_cpu);
free (orig_val);
return result;
}
/* 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;
/* The cast should be ok - its distances between to
points in a string. */
sim_io_printf (sd, "%.*s\n%*s", (int) (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 (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;
}
static char **
complete_option_list (char **ret, size_t *cnt, const struct option_list *ol,
const char *text, const char *word)
{
const OPTION *opt = NULL;
int argi;
size_t len = strlen (word);
for ( ; ol != NULL; ol = ol->next)
for (opt = ol->options; OPTION_VALID_P (opt); ++opt)
{
const char *name = opt->opt.name;
/* A long option to match against? */
if (!name)
continue;
/* Does this option actually match? */
if (strncmp (name, word, len))
continue;
ret = xrealloc (ret, ++*cnt * sizeof (ret[0]));
ret[*cnt - 2] = xstrdup (name);
}
return ret;
}
/* All leading text is stored in @text, while the current word being
completed is stored in @word. Trailing text of @word is not. */
char **
sim_complete_command (SIM_DESC sd, const char *text, const char *word)
{
char **ret = NULL;
size_t cnt = 1;
sim_cpu *cpu;
/* Only complete first word for now. */
if (text != word)
return ret;
cpu = STATE_CPU (sd, 0);
if (cpu)
ret = complete_option_list (ret, &cnt, CPU_OPTIONS (cpu), text, word);
ret = complete_option_list (ret, &cnt, STATE_OPTIONS (sd), text, word);
if (ret)
ret[cnt - 1] = NULL;
return ret;
}
SIM_RC
sim_args_command (SIM_DESC sd, const char *cmd)
{
/* something to do? */
if (cmd == NULL)
return SIM_RC_OK; /* FIXME - perhaps 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)
{
freeargv (argv);
return SIM_RC_OK; /* FIXME - perhaps 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;
}
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