555 lines
14 KiB
C
555 lines
14 KiB
C
/* Simulator option handling.
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Copyright (C) 1996, 1997 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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This file is part of GDB, the GNU debugger.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along
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with this program; if not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "sim-main.h"
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#ifdef HAVE_STRING_H
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#include <string.h>
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#else
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#ifdef HAVE_STRINGS_H
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#include <strings.h>
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#endif
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#endif
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#include "libiberty.h"
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#include "../libiberty/alloca-conf.h"
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#include "sim-options.h"
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#include "sim-io.h"
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/* Add a set of options to the simulator.
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TABLE is an array of OPTIONS terminated by a NULL `opt.name' entry.
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This is intended to be called by modules in their `install' handler. */
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SIM_RC
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sim_add_option_table (sd, table)
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SIM_DESC sd;
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const OPTION *table;
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{
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struct option_list *ol = ((struct option_list *)
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xmalloc (sizeof (struct option_list)));
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/* Note: The list is constructed in the reverse order we're called so
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later calls will override earlier ones (in case that ever happens).
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This is the intended behaviour. */
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ol->next = STATE_OPTIONS (sd);
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ol->options = table;
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STATE_OPTIONS (sd) = ol;
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return SIM_RC_OK;
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}
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/* Standard option table.
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Modules may specify additional ones.
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The caller of sim_parse_args may also specify additional options
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by calling sim_add_option_table first. */
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static DECLARE_OPTION_HANDLER (standard_option_handler);
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/* FIXME: We shouldn't print in --help output options that aren't usable.
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Some fine tuning will be necessary. One can either move less general
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options to another table or use a HAVE_FOO macro to ifdef out unavailable
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options. */
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/* ??? One might want to conditionally compile out the entries that
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aren't enabled. There's a distinction, however, between options a
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simulator can't support and options that haven't been configured in.
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Certainly options a simulator can't support shouldn't appear in the
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output of --help. Whether the same thing applies to options that haven't
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been configured in or not isn't something I can get worked up over.
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[Note that conditionally compiling them out might simply involve moving
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the option to another table.]
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If you decide to conditionally compile them out as well, delete this
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comment and add a comment saying that that is the rule. */
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#define OPTION_DEBUG_INSN (OPTION_START + 0)
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#define OPTION_DEBUG_FILE (OPTION_START + 1)
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#define OPTION_DO_COMMAND (OPTION_START + 2)
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static const OPTION standard_options[] =
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{
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{ {"verbose", no_argument, NULL, 'v'},
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'v', NULL, "Verbose output",
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standard_option_handler },
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#if defined (SIM_HAVE_BIENDIAN) /* ??? && WITH_TARGET_BYTE_ORDER == 0 */
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{ {"endian", required_argument, NULL, 'E'},
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'E', "big|little", "Set endianness",
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standard_option_handler },
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#endif
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{ {"debug", no_argument, NULL, 'D'},
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'D', NULL, "Print debugging messages",
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standard_option_handler },
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{ {"debug-insn", no_argument, NULL, OPTION_DEBUG_INSN},
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'\0', NULL, "Print instruction debugging messages",
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standard_option_handler },
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{ {"debug-file", required_argument, NULL, OPTION_DEBUG_FILE},
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'\0', "FILE NAME", "Specify debugging output file",
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standard_option_handler },
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#ifdef SIM_H8300 /* FIXME: Should be movable to h8300 dir. */
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{ {"h8300h", no_argument, NULL, 'h'},
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'h', NULL, "Indicate the CPU is h8/300h or h8/300s",
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standard_option_handler },
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#endif
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#ifdef SIM_HAVE_FLATMEM
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{ {"mem-size", required_argument, NULL, 'm'},
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'm', "MEMORY SIZE", "Specify memory size",
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standard_option_handler },
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#endif
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{ {"do-command", required_argument, NULL, OPTION_DO_COMMAND},
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'\0', "COMMAND", "Perform a builtin command",
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standard_option_handler },
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{ {"help", no_argument, NULL, 'H'},
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'H', NULL, "Print help information",
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standard_option_handler },
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{ {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL }
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};
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static SIM_RC
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standard_option_handler (sd, opt, arg)
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SIM_DESC sd;
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int opt;
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char *arg;
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{
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int i,n;
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switch (opt)
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{
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case 'v' :
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STATE_VERBOSE_P (sd) = 1;
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break;
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#ifdef SIM_HAVE_BIENDIAN
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case 'E' :
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if (strcmp (arg, "big") == 0)
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{
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if (WITH_TARGET_BYTE_ORDER == LITTLE_ENDIAN)
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{
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sim_io_eprintf (sd, "Simulator compiled for little endian only.\n");
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return SIM_RC_FAIL;
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}
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/* FIXME:wip: Need to set something in STATE_CONFIG. */
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}
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else if (strcmp (arg, "little") == 0)
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{
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if (WITH_TARGET_BYTE_ORDER == BIG_ENDIAN)
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{
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sim_io_eprintf (sd, "Simulator compiled for big endian only.\n");
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return SIM_RC_FAIL;
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}
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/* FIXME:wip: Need to set something in STATE_CONFIG. */
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}
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else
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{
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sim_io_eprintf (sd, "Invalid endian specification `%s'\n", arg);
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return SIM_RC_FAIL;
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}
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break;
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#endif
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case 'D' :
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if (! WITH_DEBUG)
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sim_io_eprintf (sd, "Debugging not compiled in, `-D' ignored\n");
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else
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{
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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for (i = 0; i < MAX_DEBUG_VALUES; ++i)
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CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[i] = 1;
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}
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break;
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case OPTION_DEBUG_INSN :
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if (! WITH_DEBUG)
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sim_io_eprintf (sd, "Debugging not compiled in, `--debug-insn' ignored\n");
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else
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{
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_DEBUG_FLAGS (STATE_CPU (sd, n))[DEBUG_INSN_IDX] = 1;
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}
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break;
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case OPTION_DEBUG_FILE :
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if (! WITH_DEBUG)
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sim_io_eprintf (sd, "Debugging not compiled in, `--debug-file' ignored\n");
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else
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{
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FILE *f = fopen (arg, "w");
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if (f == NULL)
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{
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sim_io_eprintf (sd, "Unable to open debug output file `%s'\n", arg);
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return SIM_RC_FAIL;
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}
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for (n = 0; n < MAX_NR_PROCESSORS; ++n)
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CPU_DEBUG_FILE (STATE_CPU (sd, n)) = f;
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}
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break;
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#ifdef SIM_H8300 /* FIXME: Can be moved to h8300 dir. */
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case 'h' :
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set_h8300h (1);
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break;
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#endif
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#ifdef SIM_HAVE_FLATMEM
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case 'm':
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{
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unsigned long ul = strtol (arg, NULL, 0);
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/* 16384: some minimal amount */
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if (! isdigit (arg[0]) || ul < 16384)
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{
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sim_io_eprintf (sd, "Invalid memory size `%s'", arg);
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return SIM_RC_FAIL;
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}
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STATE_MEM_SIZE (sd) = ul;
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}
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break;
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#endif
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case OPTION_DO_COMMAND:
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sim_do_command (sd, arg);
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break;
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case 'H':
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sim_print_help (sd);
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if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
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exit (0);
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/* FIXME: 'twould be nice to do something similar if gdb. */
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break;
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}
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return SIM_RC_OK;
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}
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/* Add the standard option list to the simulator. */
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SIM_RC
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standard_install (SIM_DESC sd)
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{
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if (sim_add_option_table (sd, standard_options) != SIM_RC_OK)
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return SIM_RC_FAIL;
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return SIM_RC_OK;
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}
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/* Return non-zero if arg is a duplicate argument.
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If ARG is NULL, initialize. */
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#define ARG_HASH_SIZE 97
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#define ARG_HASH(a) ((256 * (unsigned char) a[0] + (unsigned char) a[1]) % ARG_HASH_SIZE)
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static int
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dup_arg_p (arg)
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char *arg;
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{
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int hash;
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static char **arg_table = NULL;
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if (arg == NULL)
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{
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if (arg_table == NULL)
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arg_table = (char **) xmalloc (ARG_HASH_SIZE * sizeof (char *));
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memset (arg_table, 0, ARG_HASH_SIZE * sizeof (char *));
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return 0;
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}
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hash = ARG_HASH (arg);
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while (arg_table[hash] != NULL)
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{
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if (strcmp (arg, arg_table[hash]) == 0)
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return 1;
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/* We assume there won't be more than ARG_HASH_SIZE arguments so we
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don't check if the table is full. */
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if (++hash == ARG_HASH_SIZE)
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hash = 0;
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}
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arg_table[hash] = arg;
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return 0;
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}
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/* Called by sim_open to parse the arguments. */
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SIM_RC
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sim_parse_args (sd, argv)
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SIM_DESC sd;
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char **argv;
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{
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int i, argc, num_opts;
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char *p, *short_options;
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/* The `val' option struct entry is dynamically assigned for options that
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only come in the long form. ORIG_VAL is used to get the original value
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back. */
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unsigned char *orig_val;
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struct option *lp, *long_options;
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const struct option_list *ol;
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const OPTION *opt;
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OPTION_HANDLER **handlers;
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/* Count the number of arguments. */
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for (argc = 0; argv[argc] != NULL; ++argc)
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continue;
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/* Count the number of options. */
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num_opts = 0;
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for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
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for (opt = ol->options; opt->opt.name != NULL; ++opt)
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++num_opts;
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/* Initialize duplicate argument checker. */
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(void) dup_arg_p (NULL);
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/* Build the option table for getopt. */
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long_options = (struct option *) alloca ((num_opts + 1) * sizeof (struct option));
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lp = long_options;
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short_options = (char *) alloca (num_opts * 3 + 1);
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p = short_options;
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#if 0 /* ??? necessary anymore? */
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/* Set '+' as first char so argument permutation isn't done. This is done
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to workaround a problem with invoking getopt_long in run.c.: optind gets
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decremented when the program name is reached. */
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*p++ = '+';
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#endif
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handlers = (OPTION_HANDLER **) alloca (256 * sizeof (OPTION_HANDLER *));
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memset (handlers, 0, 256 * sizeof (OPTION_HANDLER *));
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orig_val = (unsigned char *) alloca (256);
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for (i = OPTION_START, ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
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for (opt = ol->options; opt->opt.name != NULL; ++opt)
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{
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if (dup_arg_p (opt->opt.name))
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continue;
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if (opt->shortopt != 0)
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{
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*p++ = opt->shortopt;
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if (opt->opt.has_arg == required_argument)
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*p++ = ':';
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else if (opt->opt.has_arg == optional_argument)
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{ *p++ = ':'; *p++ = ':'; }
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}
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*lp = opt->opt;
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/* Dynamically assign `val' numbers for long options that don't have
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a short option equivalent. */
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if (OPTION_LONG_ONLY_P (opt->opt.val))
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lp->val = i++;
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handlers[(unsigned char) lp->val] = opt->handler;
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orig_val[(unsigned char) lp->val] = opt->opt.val;
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++lp;
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}
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*p = 0;
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lp->name = NULL;
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/* Ensure getopt is initialized. */
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optind = 0;
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while (1)
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{
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int longind, optc;
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optc = getopt_long (argc, argv, short_options, long_options, &longind);
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if (optc == -1)
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{
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if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
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STATE_PROG_ARGV (sd) = argv + optind;
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break;
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}
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if (optc == '?')
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return SIM_RC_FAIL;
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if ((*handlers[optc]) (sd, orig_val[optc], optarg) == SIM_RC_FAIL)
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return SIM_RC_FAIL;
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}
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return SIM_RC_OK;
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}
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/* Print help messages for the options. */
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void
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sim_print_help (sd)
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SIM_DESC sd;
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{
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const struct option_list *ol;
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const OPTION *opt;
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if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
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sim_io_printf (sd, "Usage: %s [options] program [program args]\n",
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STATE_MY_NAME (sd));
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/* Initialize duplicate argument checker. */
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(void) dup_arg_p (NULL);
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sim_io_printf (sd, "Options:\n");
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for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
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for (opt = ol->options; opt->opt.name != NULL; ++opt)
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{
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int comma, len;
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const OPTION *o;
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if (dup_arg_p (opt->opt.name))
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continue;
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if (opt->doc == NULL)
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continue;
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sim_io_printf (sd, " ");
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comma = 0;
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len = 2;
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o = opt;
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do
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{
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if (o->shortopt != '\0')
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{
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sim_io_printf (sd, "%s-%c", comma ? ", " : "", o->shortopt);
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len += (comma ? 2 : 0) + 2;
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if (o->arg != NULL)
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{
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if (o->opt.has_arg == optional_argument)
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{
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sim_io_printf (sd, "[%s]", o->arg);
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len += 1 + strlen (o->arg) + 1;
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}
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else
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{
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sim_io_printf (sd, " %s", o->arg);
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len += 1 + strlen (o->arg);
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}
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}
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comma = 1;
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}
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++o;
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}
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while (o->opt.name != NULL && o->doc == NULL);
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o = opt;
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do
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{
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if (o->opt.name != NULL)
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{
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sim_io_printf (sd, "%s--%s",
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comma ? ", " : "",
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o->opt.name);
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len += ((comma ? 2 : 0)
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+ 2
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+ strlen (o->opt.name));
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if (o->arg != NULL)
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{
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if (o->opt.has_arg == optional_argument)
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{
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sim_io_printf (sd, " [%s]", o->arg);
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len += 2 + strlen (o->arg) + 1;
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}
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else
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{
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sim_io_printf (sd, " %s", o->arg);
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len += 1 + strlen (o->arg);
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}
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}
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comma = 1;
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}
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++o;
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}
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while (o->opt.name != NULL && o->doc == NULL);
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if (len >= 30)
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{
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sim_io_printf (sd, "\n");
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len = 0;
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}
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for (; len < 30; len++)
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sim_io_printf (sd, " ");
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sim_io_printf (sd, "%s\n", opt->doc);
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}
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if (STATE_OPEN_KIND (sd) == SIM_OPEN_STANDALONE)
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{
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sim_io_printf (sd, "\n");
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sim_io_printf (sd, "program args Arguments to pass to simulated program.\n");
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sim_io_printf (sd, " Note: Very few simulators support this.\n");
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}
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}
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SIM_RC
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sim_args_command (sd, cmd)
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SIM_DESC sd;
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char *cmd;
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{
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/* something to do? */
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if (cmd == NULL)
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return SIM_RC_OK; /* FIXME - perhaphs help would be better */
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if (cmd [0] == '-')
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{
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/* user specified -<opt> ... form? */
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char **argv = buildargv (cmd);
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SIM_RC rc = sim_parse_args (sd, argv);
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freeargv (argv);
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return rc;
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}
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else
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{
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/* user specified <opt> form? */
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const struct option_list *ol;
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const OPTION *opt;
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char **argv = buildargv (cmd);
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for (ol = STATE_OPTIONS (sd); ol != NULL; ol = ol->next)
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for (opt = ol->options; opt->opt.name != NULL; ++opt)
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{
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if (strcmp (argv[0], opt->opt.name) == 0)
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{
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switch (opt->opt.has_arg)
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{
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case no_argument:
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if (argv[1] == NULL)
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opt->handler (sd, opt->opt.val, NULL);
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else
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sim_io_eprintf (sd, "Command `%s' takes no arguments\n", opt->opt.name);
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break;
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case optional_argument:
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if (argv[1] == NULL)
|
|
opt->handler (sd, opt->opt.val, NULL);
|
|
else if (argv[2] == NULL)
|
|
opt->handler (sd, opt->opt.val, argv[1]);
|
|
else
|
|
sim_io_eprintf (sd, "Command `%s' requires no more than one argument\n", opt->opt.name);
|
|
break;
|
|
case required_argument:
|
|
if (argv[1] == NULL)
|
|
sim_io_eprintf (sd, "Command `%s' requires an argument\n", opt->opt.name);
|
|
else if (argv[2] == NULL)
|
|
opt->handler (sd, opt->opt.val, argv[1]);
|
|
else
|
|
sim_io_eprintf (sd, "Command `%s' requires only one argument\n", opt->opt.name);
|
|
}
|
|
return SIM_RC_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* didn't find anything that matched */
|
|
return SIM_RC_FAIL;
|
|
}
|