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 <stdio.h>
  24
  25 #include "psim.h"
  26 #include "function_unit.h"
  27
  28 #ifdef HAVE_STDLIB_H
  29 #include <stdlib.h>
  30 #endif
  31
  32 #ifdef HAVE_UNISTD_H
  33 #include <unistd.h>
  34 #endif
  35
  36 #ifdef HAVE_STRING_H
  37 #include <string.h>
  38 #else
  39 #ifdef HAVE_STRINGS_H
  40 #include <strings.h>
  41 #endif
  42 #endif
  43
  44 extern char **environ;
  45 extern char *optarg;
  46 extern int optind;
  47 extern int optopt;
  48 extern int opterr;
  49
  50 void
  51 printf_filtered(const char *msg, ...)
  52 {
  53   va_list ap;
  54   va_start(ap, msg);
  55   vprintf(msg, ap);
  56   va_end(ap);
  57 }
  58
  59 void
  60 error (char *msg, ...)
  61 {
  62   va_list ap;
  63   va_start(ap, msg);
  64   vprintf(msg, ap);
  65   va_end(ap);
  66   exit (1);
  67 }
  68
  69 void *
  70 zalloc(long size)
  71 {
  72   void *memory = malloc(size);
  73   if (memory == NULL)
  74     error("zmalloc failed\n");
  75   bzero(memory, size);
  76   return memory;
  77 }
  78
  79 void
  80 zfree(void *chunk)
  81 {
  82   free(chunk);
  83 }
  84
  85 static void
  86 usage(void)
  87 {
  88   printf_filtered("Usage:\n\tpsim [ -t <trace-option> ] [-m model] [-i] [-I] <image> [ <image-args> ... ]\n");
  89   trace_usage();
  90   error("");
  91 }
  92
  93 int
  94 main(int argc, char **argv)
  95 {
  96   psim *system;
  97   const char *name_of_file;
  98   char *arg_;
  99   psim_status status;
 100   int letter;
 101   int print_info = 0;
 102
 103   /* check for arguments -- note sim_calls.c also contains argument processing
 104      code for the simulator linked within gdb.  */
 105   while ((letter = getopt (argc, argv, "Iim:t:")) != EOF)
 106     {
 107       switch (letter) {
 108       case 't':
 109         trace_option(optarg);
 110         break;
 111       case 'm':
 112         function_unit_model(optarg);
 113         break;
 114       case 'i':
 115         print_info = 1;
 116         break;
 117       case 'I':
 118         print_info = 2;
 119         break;
 120       default:
 121         usage();
 122       }
 123     }
 124   if (optind >= argc)
 125     usage();
 126   name_of_file = argv[optind];
 127
 128   /* create the simulator */
 129   system = psim_create(name_of_file);
 130
 131   /* fudge the environment so that _=prog-name */
 132   arg_ = (char*)zalloc(strlen(argv[optind]) + strlen("_=") + 1);
 133   strcpy(arg_, "_=");
 134   strcat(arg_, argv[optind]);
 135   putenv(arg_);
 136
 137   /* initialize it */
 138   psim_init(system);
 139   psim_stack(system, &argv[optind], environ);
 140
 141   psim_run(system);
 142
 143   /* any final clean up */
 144   if (print_info)
 145     psim_print_info (system, print_info);
 146
 147   /* why did we stop */
 148   status = psim_get_status(system);
 149   switch (status.reason) {
 150   case was_continuing:
 151     error("psim: continuing while stoped!\n");
 152     return 0;
 153   case was_trap:
 154     error("psim: no trap insn\n");
 155     return 0;
 156   case was_exited:
 157     return status.signal;
 158   case was_signalled:
 159     printf ("%s: Caught signal %d at address 0x%lx\n",
 160             name_of_file, (int)status.signal,
 161             (long)status.program_counter);
 162     return status.signal;
 163   default:
 164     error("unknown halt condition\n");
 165     return 0;
 166   }
 167 }