sim/ppc/main.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1995, Andrew Cagney <cagney@highland.com.au>
   4
   5     This program is free software; you can redistribute it and/or modify
   6     it under the terms of the GNU General Public License as published by
   7     the Free Software Foundation; either version 2 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU General Public License for more details.
  14
  15     You should have received a copy of the GNU General Public License
  16     along with this program; if not, write to the Free Software
  17     Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19     */
  20
  21
  22 #include <stdarg.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25 #include <string.h>
  26
  27 #include "psim.h"
  28
  29 extern char **environ;
  30 extern char *optarg;
  31 extern int optind;
  32 extern int optopt;
  33 extern int opterr;
  34
  35 void
  36 printf_filtered(const char *msg, ...)
  37 {
  38   va_list ap;
  39   va_start(ap, msg);
  40   vprintf(msg, ap);
  41   va_end(ap);
  42 }
  43
  44 void
  45 error (char *msg, ...)
  46 {
  47   va_list ap;
  48   va_start(ap, msg);
  49   vprintf(msg, ap);
  50   va_end(ap);
  51   exit (1);
  52 }
  53
  54 void *
  55 zalloc(long size)
  56 {
  57   void *memory = malloc(size);
  58   if (memory == NULL)
  59     error("zmalloc failed\n");
  60   bzero(memory, size);
  61   return memory;
  62 }
  63
  64 void
  65 zfree(void *chunk)
  66 {
  67   free(chunk);
  68 }
  69
  70 static void
  71 usage(void)
  72 {
  73   error ("Usage: psim [ -a -p -c -C -s -i -I -t -g ] <image> [ <image-args> ... ]\n");
  74 }
  75
  76 int
  77 main(int argc, char **argv)
  78 {
  79   psim *system;
  80   const char *name_of_file;
  81   char *arg_;
  82   unsigned_word stack_pointer;
  83   psim_status status;
  84   int letter;
  85   int i;
  86   int print_info = 0;
  87
  88   /* check for arguments -- note sim_calls.c also contains argument processing
  89      code for the simulator linked within gdb.  */
  90   while ((letter = getopt (argc, argv, "acCiIpstg")) != EOF)
  91     {
  92       switch (letter) {
  93       case 'a':
  94         for (i = 0; i < nr_trace; i++)
  95           ppc_trace[i] = 1;
  96         break;
  97       case 'p':
  98         ppc_trace[trace_cpu] = ppc_trace[trace_semantics] = 1;
  99         break;
 100       case 'c':
 101         ppc_trace[trace_core] = 1;
 102         break;
 103       case 'C':
 104         ppc_trace[trace_console_device] = 1;
 105         break;
 106       case 's':
 107         ppc_trace[trace_create_stack] = 1;
 108         break;
 109       case 'i':
 110         ppc_trace[trace_icu_device] = 1;
 111         break;
 112       case 'I':
 113         print_info = 1;
 114         break;
 115       case 't':
 116         ppc_trace[trace_device_tree] = 1;
 117         break;
 118       case 'g':
 119         ppc_trace[trace_gdb] = 1;
 120         break;
 121       default:
 122         usage();
 123       }
 124     }
 125   if (optind >= argc)
 126     usage();
 127   name_of_file = argv[optind];
 128
 129   /* create the simulator */
 130   system = psim_create(name_of_file, ((WITH_SMP > 0) ? WITH_SMP : 1));
 131
 132   /* fudge the environment so that _=prog-name */
 133   arg_ = (char*)zalloc(strlen(argv[optind]) + strlen("_=") + 1);
 134   strcpy(arg_, "_=");
 135   strcat(arg_, argv[optind]);
 136   putenv(arg_);
 137
 138   /* initialize it */
 139   psim_init(system);
 140   psim_stack(system, &argv[optind], environ);
 141
 142   psim_run(system);
 143
 144   /* any final clean up */
 145   if (print_info)
 146     psim_print_info (system, 1);
 147
 148   /* why did we stop */
 149   status = psim_get_status(system);
 150   switch (status.reason) {
 151   case was_continuing:
 152     error("psim: continuing while stoped!\n");
 153     return 0;
 154   case was_trap:
 155     error("psim: no trap insn\n");
 156     return 0;
 157   case was_exited:
 158     return status.signal;
 159   case was_signalled:
 160     printf ("%s: Caught signal %d at address 0x%lx\n",
 161             name_of_file, (int)status.signal,
 162             (long)status.program_counter);
 163     return status.signal;
 164   default:
 165     error("unknown halt condition\n");
 166     return 0;
 167   }
 168 }