sim/rl78/main.c

   1 /* main.c --- main function for stand-alone RL78 simulator.
   2
   3    Copyright (C) 2011-2018 Free Software Foundation, Inc.
   4    Contributed by Red Hat, Inc.
   5
   6    This file is part of the GNU simulators.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22
  23 #include "config.h"
  24 #include <stdio.h>
  25 #include <string.h>
  26 #include <stdlib.h>
  27 #ifdef HAVE_UNISTD_H
  28 #include <unistd.h>
  29 #endif
  30 #include <assert.h>
  31 #include <setjmp.h>
  32 #include <signal.h>
  33 #ifdef HAVE_GETOPT_H
  34 #include <getopt.h>
  35 #endif
  36
  37 #include "libiberty.h"
  38 #include "bfd.h"
  39
  40 #include "cpu.h"
  41 #include "mem.h"
  42 #include "load.h"
  43 #include "trace.h"
  44
  45 static int disassemble = 0;
  46 static const char * dump_counts_filename = NULL;
  47
  48 static void
  49 done (int exit_code)
  50 {
  51   if (verbose)
  52     {
  53       printf ("Exit code: %d\n", exit_code);
  54       printf ("total clocks: %lld\n", total_clocks);
  55     }
  56   if (dump_counts_filename)
  57     dump_counts_per_insn (dump_counts_filename);
  58   exit (exit_code);
  59 }
  60
  61 int
  62 main (int argc, char **argv)
  63 {
  64   int o;
  65   int save_trace;
  66   bfd *prog;
  67   int rc;
  68
  69   xmalloc_set_program_name (argv[0]);
  70
  71   while ((o = getopt (argc, argv, "tvdr:D:M:")) != -1)
  72     {
  73       switch (o)
  74         {
  75         case 't':
  76           trace ++;
  77           break;
  78         case 'v':
  79           verbose ++;
  80           break;
  81         case 'd':
  82           disassemble ++;
  83           break;
  84         case 'r':
  85           mem_ram_size (atoi (optarg));
  86           break;
  87         case 'D':
  88           dump_counts_filename = optarg;
  89           break;
  90         case 'M':
  91           if (strcmp (optarg, "g10") == 0)
  92             {
  93               rl78_g10_mode = 1;
  94               g13_multiply = 0;
  95               g14_multiply = 0;
  96               mem_set_mirror (0, 0xf8000, 4096);
  97             }
  98           if (strcmp (optarg, "g13") == 0)
  99             {
 100               rl78_g10_mode = 0;
 101               g13_multiply = 1;
 102               g14_multiply = 0;
 103             }
 104           if (strcmp (optarg, "g14") == 0)
 105             {
 106               rl78_g10_mode = 0;
 107               g13_multiply = 0;
 108               g14_multiply = 1;
 109             }
 110           break;
 111         case '?':
 112           {
 113             fprintf (stderr,
 114                      "usage: run [options] program [arguments]\n");
 115             fprintf (stderr,
 116                      "\t-v\t\t- increase verbosity.\n"
 117                      "\t-t\t\t- trace.\n"
 118                      "\t-d\t\t- disassemble.\n"
 119                      "\t-r <bytes>\t- ram size.\n"
 120                      "\t-M <mcu>\t- mcu type, default none, allowed: g10,g13,g14\n"
 121                      "\t-D <filename>\t- dump cycle count histogram\n");
 122             exit (1);
 123           }
 124         }
 125     }
 126
 127   prog = bfd_openr (argv[optind], 0);
 128   if (!prog)
 129     {
 130       fprintf (stderr, "Can't read %s\n", argv[optind]);
 131       exit (1);
 132     }
 133
 134   if (!bfd_check_format (prog, bfd_object))
 135     {
 136       fprintf (stderr, "%s not a rl78 program\n", argv[optind]);
 137       exit (1);
 138     }
 139
 140   init_cpu ();
 141
 142   rl78_in_gdb = 0;
 143   save_trace = trace;
 144   trace = 0;
 145   rl78_load (prog, 0, argv[0]);
 146   trace = save_trace;
 147
 148   sim_disasm_init (prog);
 149
 150   rc = setjmp (decode_jmp_buf);
 151
 152   if (rc == 0)
 153     {
 154       if (!trace && !disassemble)
 155         {
 156           /* This will longjmp to the above if an exception
 157              happens.  */
 158           for (;;)
 159             decode_opcode ();
 160         }
 161       else
 162         while (1)
 163           {
 164
 165             if (trace)
 166               printf ("\n");
 167
 168             if (disassemble)
 169               sim_disasm_one ();
 170
 171             rc = decode_opcode ();
 172
 173             if (trace)
 174               trace_register_changes ();
 175           }
 176     }
 177
 178   if (RL78_HIT_BREAK (rc))
 179     done (1);
 180   else if (RL78_EXITED (rc))
 181     done (RL78_EXIT_STATUS (rc));
 182   else if (RL78_STOPPED (rc))
 183     {
 184       if (verbose)
 185         printf ("Stopped on signal %d\n", RL78_STOP_SIG (rc));
 186       exit (1);
 187     }
 188   done (0);
 189   exit (0);
 190 }