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/* main.c --- main function for stand-alone RX simulator.
Copyright (C) 2005-2021 Free Software Foundation, Inc.
Contributed by Red Hat, Inc.
This file is part of the GNU simulators.
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 "config.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <assert.h>
#include <setjmp.h>
#include <signal.h>
#ifdef HAVE_GETOPT_H
#include <getopt.h>
#endif
#include "bfd.h"
#include "cpu.h"
#include "mem.h"
#include "misc.h"
#include "load.h"
#include "trace.h"
#include "err.h"
static int disassemble = 0;
/* This must be higher than any other option index. */
#define OPT_ACT 400
#define ACT(E,A) (OPT_ACT + SIM_ERR_##E * SIM_ERRACTION_NUM_ACTIONS + SIM_ERRACTION_##A)
static struct option sim_options[] =
{
{ "end-sim-args", 0, NULL, 'E' },
{ "exit-null-deref", 0, NULL, ACT(NULL_POINTER_DEREFERENCE,EXIT) },
{ "warn-null-deref", 0, NULL, ACT(NULL_POINTER_DEREFERENCE,WARN) },
{ "ignore-null-deref", 0, NULL, ACT(NULL_POINTER_DEREFERENCE,IGNORE) },
{ "exit-unwritten-pages", 0, NULL, ACT(READ_UNWRITTEN_PAGES,EXIT) },
{ "warn-unwritten-pages", 0, NULL, ACT(READ_UNWRITTEN_PAGES,WARN) },
{ "ignore-unwritten-pages", 0, NULL, ACT(READ_UNWRITTEN_PAGES,IGNORE) },
{ "exit-unwritten-bytes", 0, NULL, ACT(READ_UNWRITTEN_BYTES,EXIT) },
{ "warn-unwritten-bytes", 0, NULL, ACT(READ_UNWRITTEN_BYTES,WARN) },
{ "ignore-unwritten-bytes", 0, NULL, ACT(READ_UNWRITTEN_BYTES,IGNORE) },
{ "exit-corrupt-stack", 0, NULL, ACT(CORRUPT_STACK,EXIT) },
{ "warn-corrupt-stack", 0, NULL, ACT(CORRUPT_STACK,WARN) },
{ "ignore-corrupt-stack", 0, NULL, ACT(CORRUPT_STACK,IGNORE) },
{ 0, 0, 0, 0 }
};
static void
done (int exit_code)
{
if (verbose)
{
stack_heap_stats ();
mem_usage_stats ();
/* Only use comma separated numbers when being very verbose.
Comma separated numbers are hard to parse in awk scripts. */
if (verbose > 1)
printf ("insns: %14s\n", comma (rx_cycles));
else
printf ("insns: %u\n", rx_cycles);
pipeline_stats ();
}
exit (exit_code);
}
int
main (int argc, char **argv)
{
int o;
int save_trace;
bfd *prog;
int rc;
/* By default, we exit when an execution error occurs. */
execution_error_init_standalone ();
while ((o = getopt_long (argc, argv, "tvdeEwi", sim_options, NULL)) != -1)
{
if (o == 'E')
/* Stop processing the command line. This is so that any remaining
words on the command line that look like arguments will be passed
on to the program being simulated. */
break;
if (o >= OPT_ACT)
{
int e, a;
o -= OPT_ACT;
e = o / SIM_ERRACTION_NUM_ACTIONS;
a = o % SIM_ERRACTION_NUM_ACTIONS;
execution_error_set_action (e, a);
}
else switch (o)
{
case 't':
trace++;
break;
case 'v':
verbose++;
break;
case 'd':
disassemble++;
break;
case 'e':
execution_error_init_standalone ();
break;
case 'w':
execution_error_warn_all ();
break;
case 'i':
execution_error_ignore_all ();
break;
case '?':
{
int i;
fprintf (stderr,
"usage: run [options] program [arguments]\n");
fprintf (stderr,
"\t-v\t- increase verbosity.\n"
"\t-t\t- trace.\n"
"\t-d\t- disassemble.\n"
"\t-E\t- stop processing sim args\n"
"\t-e\t- exit on all execution errors.\n"
"\t-w\t- warn (do not exit) on all execution errors.\n"
"\t-i\t- ignore all execution errors.\n");
for (i=0; sim_options[i].name; i++)
fprintf (stderr, "\t--%s\n", sim_options[i].name);
exit (1);
}
}
}
prog = bfd_openr (argv[optind], 0);
if (!prog)
{
fprintf (stderr, "Can't read %s\n", argv[optind]);
exit (1);
}
if (!bfd_check_format (prog, bfd_object))
{
fprintf (stderr, "%s not a rx program\n", argv[optind]);
exit (1);
}
init_regs ();
rx_in_gdb = 0;
save_trace = trace;
trace = 0;
rx_load (prog, NULL);
trace = save_trace;
sim_disasm_init (prog);
enable_counting = verbose;
rc = setjmp (decode_jmp_buf);
if (rc == 0)
{
if (!trace && !disassemble)
{
/* This will longjmp to the above if an exception
happens. */
for (;;)
decode_opcode ();
}
else
while (1)
{
if (trace)
printf ("\n");
if (disassemble)
{
enable_counting = 0;
sim_disasm_one ();
enable_counting = verbose;
}
rc = decode_opcode ();
if (trace)
trace_register_changes ();
}
}
if (RX_HIT_BREAK (rc))
done (1);
else if (RX_EXITED (rc))
done (RX_EXIT_STATUS (rc));
else if (RX_STOPPED (rc))
{
if (verbose)
printf("Stopped on signal %d\n", RX_STOP_SIG (rc));
exit(1);
}
done (0);
exit (0);
}
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