sim/ppc/main.c

   1 /*  This file is part of the program psim.
   2
   3     Copyright (C) 1994-1996, 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 "options.h"
  27 #include "device.h" /* FIXME: psim should provide the interface */
  28
  29 #ifdef HAVE_STDLIB_H
  30 #include <stdlib.h>
  31 #endif
  32
  33 #ifdef HAVE_UNISTD_H
  34 #include <unistd.h>
  35 #endif
  36
  37 #ifdef HAVE_STRING_H
  38 #include <string.h>
  39 #else
  40 #ifdef HAVE_STRINGS_H
  41 #include <strings.h>
  42 #endif
  43 #endif
  44
  45 extern char **environ;
  46
  47 void
  48 printf_filtered(const char *msg, ...)
  49 {
  50   va_list ap;
  51   va_start(ap, msg);
  52   vprintf(msg, ap);
  53   va_end(ap);
  54 }
  55
  56 void
  57 flush_stdoutput(void)
  58 {
  59   fflush (stdout);
  60 }
  61
  62 void
  63 error (char *msg, ...)
  64 {
  65   va_list ap;
  66   va_start(ap, msg);
  67   vprintf(msg, ap);
  68   va_end(ap);
  69   exit (1);
  70 }
  71
  72 void *
  73 zalloc(long size)
  74 {
  75   void *memory = malloc(size);
  76   if (memory == NULL)
  77     error("zmalloc failed\n");
  78   memset(memory, 0, size);
  79   return memory;
  80 }
  81
  82 void
  83 zfree(void *chunk)
  84 {
  85   free(chunk);
  86 }
  87
  88 int
  89 main(int argc, char **argv)
  90 {
  91   psim *system;
  92   const char *name_of_file;
  93   char *arg_;
  94   psim_status status;
  95   device *root = psim_tree();
  96
  97   /* parse the arguments */
  98   argv = psim_options(root, argv + 1);
  99   if (argv[0] == NULL)
 100     psim_usage(0);
 101   name_of_file = argv[0];
 102
 103   if (ppc_trace[trace_opts])
 104     print_options ();
 105
 106   /* create the simulator */
 107   system = psim_create(name_of_file, root);
 108
 109   /* fudge the environment so that _=prog-name */
 110   arg_ = (char*)zalloc(strlen(argv[0]) + strlen("_=") + 1);
 111   strcpy(arg_, "_=");
 112   strcat(arg_, argv[0]);
 113   putenv(arg_);
 114
 115   /* initialize it */
 116   psim_init(system);
 117   psim_stack(system, argv, environ);
 118
 119   psim_run(system);
 120
 121   /* any final clean up */
 122   if (ppc_trace[trace_print_info])
 123     psim_print_info (system, ppc_trace[trace_print_info]);
 124
 125   /* why did we stop */
 126   status = psim_get_status(system);
 127   switch (status.reason) {
 128   case was_continuing:
 129     error("psim: continuing while stoped!\n");
 130     return 0;
 131   case was_trap:
 132     error("psim: no trap insn\n");
 133     return 0;
 134   case was_exited:
 135     return status.signal;
 136   case was_signalled:
 137     printf ("%s: Caught signal %d at address 0x%lx\n",
 138             name_of_file, (int)status.signal,
 139             (long)status.program_counter);
 140     return status.signal;
 141   default:
 142     error("unknown halt condition\n");
 143     return 0;
 144   }
 145 }