sim/m32c/main.c

   1 /* main.c --- main function for stand-alone M32C simulator.
   2
   3 Copyright (C) 2005, 2007, 2008 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 #include <stdio.h>
  23 #include <string.h>
  24 #include <stdlib.h>
  25 #include <unistd.h>
  26 #include <assert.h>
  27 #include <setjmp.h>
  28 #include <signal.h>
  29
  30 #include "bfd.h"
  31
  32 #include "cpu.h"
  33 #include "mem.h"
  34 #include "misc.h"
  35 #include "load.h"
  36 #include "trace.h"
  37
  38 static int disassemble = 0;
  39 static unsigned int cycles = 0;
  40
  41 static void
  42 done (int exit_code)
  43 {
  44   if (verbose)
  45     {
  46       stack_heap_stats ();
  47       mem_usage_stats ();
  48       printf ("insns: %14s\n", comma (cycles));
  49     }
  50   exit (exit_code);
  51 }
  52
  53 int
  54 main (int argc, char **argv)
  55 {
  56   int o;
  57   int save_trace;
  58   bfd *prog;
  59
  60   while ((o = getopt (argc, argv, "tvdm:")) != -1)
  61     switch (o)
  62       {
  63       case 't':
  64         trace++;
  65         break;
  66       case 'v':
  67         verbose++;
  68         break;
  69       case 'd':
  70         disassemble++;
  71         break;
  72       case 'm':
  73         if (strcmp (optarg, "r8c") == 0 || strcmp (optarg, "m16c") == 0)
  74           default_machine = bfd_mach_m16c;
  75         else if (strcmp (optarg, "m32cm") == 0
  76                  || strcmp (optarg, "m32c") == 0)
  77           default_machine = bfd_mach_m32c;
  78         else
  79           {
  80             fprintf (stderr, "Invalid machine: %s\n", optarg);
  81             exit (1);
  82           }
  83         break;
  84       case '?':
  85         fprintf (stderr,
  86                  "usage: run [-v] [-t] [-d] [-m r8c|m16c|m32cm|m32c]"
  87                  " program\n");
  88         exit (1);
  89       }
  90
  91   prog = bfd_openr (argv[optind], 0);
  92   if (!prog)
  93     {
  94       fprintf (stderr, "Can't read %s\n", argv[optind]);
  95       exit (1);
  96     }
  97
  98   if (!bfd_check_format (prog, bfd_object))
  99     {
 100       fprintf (stderr, "%s not a m32c program\n", argv[optind]);
 101       exit (1);
 102     }
 103
 104   save_trace = trace;
 105   trace = 0;
 106   m32c_load (prog);
 107   trace = save_trace;
 108
 109   if (disassemble)
 110     sim_disasm_init (prog);
 111
 112   while (1)
 113     {
 114       int rc;
 115
 116       if (trace)
 117         printf ("\n");
 118
 119       if (disassemble)
 120         sim_disasm_one ();
 121
 122       enable_counting = verbose;
 123       cycles++;
 124       rc = decode_opcode ();
 125       enable_counting = 0;
 126
 127       if (M32C_HIT_BREAK (rc))
 128         done (1);
 129       else if (M32C_EXITED (rc))
 130         done (M32C_EXIT_STATUS (rc));
 131       else
 132         assert (M32C_STEPPED (rc));
 133
 134       trace_register_changes ();
 135     }
 136 }