sim/rl78/main.c

   1 /* main.c --- main function for stand-alone RL78 simulator.
   2
   3    Copyright (C) 2011-2023 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 /* This must come before any other includes.  */
  23 #include "defs.h"
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #ifdef HAVE_UNISTD_H
  29 #include <unistd.h>
  30 #endif
  31 #include <assert.h>
  32 #include <setjmp.h>
  33 #include <signal.h>
  34 #include <getopt.h>
  35
  36 #include "libiberty.h"
  37 #include "bfd.h"
  38
  39 #include "cpu.h"
  40 #include "mem.h"
  41 #include "load.h"
  42 #include "trace.h"
  43
  44 static int disassemble = 0;
  45 static const char * dump_counts_filename = NULL;
  46
  47 static void
  48 done (int exit_code)
  49 {
  50   if (verbose)
  51     {
  52       printf ("Exit code: %d\n", exit_code);
  53       printf ("total clocks: %lld\n", total_clocks);
  54     }
  55   if (dump_counts_filename)
  56     dump_counts_per_insn (dump_counts_filename);
  57   exit (exit_code);
  58 }
  59
  60 int
  61 main (int argc, char **argv)
  62 {
  63   int o;
  64   int save_trace;
  65   bfd *prog;
  66   int rc;
  67   static const struct option longopts[] = { { 0 } };
  68
  69   xmalloc_set_program_name (argv[0]);
  70
  71   while ((o = getopt_long (argc, argv, "tvdr:D:M:", longopts, NULL))
  72          != -1)
  73     {
  74       switch (o)
  75         {
  76         case 't':
  77           trace ++;
  78           break;
  79         case 'v':
  80           verbose ++;
  81           break;
  82         case 'd':
  83           disassemble ++;
  84           break;
  85         case 'r':
  86           mem_ram_size (atoi (optarg));
  87           break;
  88         case 'D':
  89           dump_counts_filename = optarg;
  90           break;
  91         case 'M':
  92           if (strcmp (optarg, "g10") == 0)
  93             {
  94               rl78_g10_mode = 1;
  95               g13_multiply = 0;
  96               g14_multiply = 0;
  97               mem_set_mirror (0, 0xf8000, 4096);
  98             }
  99           if (strcmp (optarg, "g13") == 0)
 100             {
 101               rl78_g10_mode = 0;
 102               g13_multiply = 1;
 103               g14_multiply = 0;
 104             }
 105           if (strcmp (optarg, "g14") == 0)
 106             {
 107               rl78_g10_mode = 0;
 108               g13_multiply = 0;
 109               g14_multiply = 1;
 110             }
 111           break;
 112         case '?':
 113           {
 114             fprintf (stderr,
 115                      "usage: run [options] program [arguments]\n");
 116             fprintf (stderr,
 117                      "\t-v\t\t- increase verbosity.\n"
 118                      "\t-t\t\t- trace.\n"
 119                      "\t-d\t\t- disassemble.\n"
 120                      "\t-r <bytes>\t- ram size.\n"
 121                      "\t-M <mcu>\t- mcu type, default none, allowed: g10,g13,g14\n"
 122                      "\t-D <filename>\t- dump cycle count histogram\n");
 123             exit (1);
 124           }
 125         }
 126     }
 127
 128   prog = bfd_openr (argv[optind], 0);
 129   if (!prog)
 130     {
 131       fprintf (stderr, "Can't read %s\n", argv[optind]);
 132       exit (1);
 133     }
 134
 135   if (!bfd_check_format (prog, bfd_object))
 136     {
 137       fprintf (stderr, "%s not a rl78 program\n", argv[optind]);
 138       exit (1);
 139     }
 140
 141   init_cpu ();
 142
 143   rl78_in_gdb = 0;
 144   save_trace = trace;
 145   trace = 0;
 146   rl78_load (prog, 0, argv[0]);
 147   trace = save_trace;
 148
 149   sim_disasm_init (prog);
 150
 151   rc = setjmp (decode_jmp_buf);
 152
 153   if (rc == 0)
 154     {
 155       if (!trace && !disassemble)
 156         {
 157           /* This will longjmp to the above if an exception
 158              happens.  */
 159           for (;;)
 160             decode_opcode ();
 161         }
 162       else
 163         while (1)
 164           {
 165
 166             if (trace)
 167               printf ("\n");
 168
 169             if (disassemble)
 170               sim_disasm_one ();
 171
 172             rc = decode_opcode ();
 173
 174             if (trace)
 175               trace_register_changes ();
 176           }
 177     }
 178
 179   if (RL78_HIT_BREAK (rc))
 180     done (1);
 181   else if (RL78_EXITED (rc))
 182     done (RL78_EXIT_STATUS (rc));
 183   else if (RL78_STOPPED (rc))
 184     {
 185       if (verbose)
 186         printf ("Stopped on signal %d\n", RL78_STOP_SIG (rc));
 187       exit (1);
 188     }
 189   done (0);
 190   exit (0);
 191 }