sim/rl78/main.c

   1 /* main.c --- main function for stand-alone RL78 simulator.
   2
   3    Copyright (C) 2011-2021 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 #include <getopt.h>
  34
  35 #include "libiberty.h"
  36 #include "bfd.h"
  37
  38 #include "cpu.h"
  39 #include "mem.h"
  40 #include "load.h"
  41 #include "trace.h"
  42
  43 static int disassemble = 0;
  44 static const char * dump_counts_filename = NULL;
  45
  46 static void
  47 done (int exit_code)
  48 {
  49   if (verbose)
  50     {
  51       printf ("Exit code: %d\n", exit_code);
  52       printf ("total clocks: %lld\n", total_clocks);
  53     }
  54   if (dump_counts_filename)
  55     dump_counts_per_insn (dump_counts_filename);
  56   exit (exit_code);
  57 }
  58
  59 int
  60 main (int argc, char **argv)
  61 {
  62   int o;
  63   int save_trace;
  64   bfd *prog;
  65   int rc;
  66
  67   xmalloc_set_program_name (argv[0]);
  68
  69   while ((o = getopt (argc, argv, "tvdr:D:M:")) != -1)
  70     {
  71       switch (o)
  72         {
  73         case 't':
  74           trace ++;
  75           break;
  76         case 'v':
  77           verbose ++;
  78           break;
  79         case 'd':
  80           disassemble ++;
  81           break;
  82         case 'r':
  83           mem_ram_size (atoi (optarg));
  84           break;
  85         case 'D':
  86           dump_counts_filename = optarg;
  87           break;
  88         case 'M':
  89           if (strcmp (optarg, "g10") == 0)
  90             {
  91               rl78_g10_mode = 1;
  92               g13_multiply = 0;
  93               g14_multiply = 0;
  94               mem_set_mirror (0, 0xf8000, 4096);
  95             }
  96           if (strcmp (optarg, "g13") == 0)
  97             {
  98               rl78_g10_mode = 0;
  99               g13_multiply = 1;
 100               g14_multiply = 0;
 101             }
 102           if (strcmp (optarg, "g14") == 0)
 103             {
 104               rl78_g10_mode = 0;
 105               g13_multiply = 0;
 106               g14_multiply = 1;
 107             }
 108           break;
 109         case '?':
 110           {
 111             fprintf (stderr,
 112                      "usage: run [options] program [arguments]\n");
 113             fprintf (stderr,
 114                      "\t-v\t\t- increase verbosity.\n"
 115                      "\t-t\t\t- trace.\n"
 116                      "\t-d\t\t- disassemble.\n"
 117                      "\t-r <bytes>\t- ram size.\n"
 118                      "\t-M <mcu>\t- mcu type, default none, allowed: g10,g13,g14\n"
 119                      "\t-D <filename>\t- dump cycle count histogram\n");
 120             exit (1);
 121           }
 122         }
 123     }
 124
 125   prog = bfd_openr (argv[optind], 0);
 126   if (!prog)
 127     {
 128       fprintf (stderr, "Can't read %s\n", argv[optind]);
 129       exit (1);
 130     }
 131
 132   if (!bfd_check_format (prog, bfd_object))
 133     {
 134       fprintf (stderr, "%s not a rl78 program\n", argv[optind]);
 135       exit (1);
 136     }
 137
 138   init_cpu ();
 139
 140   rl78_in_gdb = 0;
 141   save_trace = trace;
 142   trace = 0;
 143   rl78_load (prog, 0, argv[0]);
 144   trace = save_trace;
 145
 146   sim_disasm_init (prog);
 147
 148   rc = setjmp (decode_jmp_buf);
 149
 150   if (rc == 0)
 151     {
 152       if (!trace && !disassemble)
 153         {
 154           /* This will longjmp to the above if an exception
 155              happens.  */
 156           for (;;)
 157             decode_opcode ();
 158         }
 159       else
 160         while (1)
 161           {
 162
 163             if (trace)
 164               printf ("\n");
 165
 166             if (disassemble)
 167               sim_disasm_one ();
 168
 169             rc = decode_opcode ();
 170
 171             if (trace)
 172               trace_register_changes ();
 173           }
 174     }
 175
 176   if (RL78_HIT_BREAK (rc))
 177     done (1);
 178   else if (RL78_EXITED (rc))
 179     done (RL78_EXIT_STATUS (rc));
 180   else if (RL78_STOPPED (rc))
 181     {
 182       if (verbose)
 183         printf ("Stopped on signal %d\n", RL78_STOP_SIG (rc));
 184       exit (1);
 185     }
 186   done (0);
 187   exit (0);
 188 }