* sim-utils.c (sim_copy_argv, sim_analyze_program): New functions.

1 files changed, 123 insertions, 0 deletions

diff --git a/sim/common/sim-utils.c b/sim/common/sim-utils.c
new file mode 100644
index 0000000..29a059c
--- /dev/null
+++ b/sim/common/sim-utils.c
@@ -0,0 +1,123 @@
+/* Miscellaneous simulator utilities.
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   Contributed by Cygnus Support.
+
+This file is part of GDB, the GNU debugger.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License along
+with this program; if not, write to the Free Software Foundation, Inc.,
+59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+#include "sim-main.h"
+#include "sim-assert.h"
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include "libiberty.h"
+#include "bfd.h"
+
+/* Global pointer to all state data.
+   Set by sim_resume.  */
+struct sim_state *current_state;
+
+/* Allocate zero filled memory with xmalloc.  */
+
+void *
+zalloc (unsigned long size)
+{
+  void *memory = (void *) xmalloc (size);
+  memset (memory, 0, size);
+  return memory;
+}
+
+void
+zfree (void *data)
+{
+  free (data);
+}
+
+/* Allocate a sim_state struct.  */
+
+SIM_DESC
+sim_state_alloc (void)
+{
+  SIM_DESC sd = zalloc (sizeof (struct sim_state));
+  sd->base.magic = SIM_MAGIC_NUMBER;
+  return sd;
+}
+
+/* Free a sim_state struct.  */
+
+void
+sim_state_free (SIM_DESC sd)
+{
+  ASSERT (sd->base.magic == SIM_MAGIC_NUMBER);
+  zfree (sd);
+}
+
+/* Make a copy of ARGV.
+   This can also be used to copy the environment vector.
+   The result is a pointer to the malloc'd copy or NULL if insufficient
+   memory available.  */
+
+char **
+sim_copy_argv (argv)
+     char **argv;
+{
+  int i,argc,len;
+  char **copy,*p;
+
+  argc = len = 0;
+  if (argv)
+    {
+      for ( ; argv[argc]; ++argc)
+	len += strlen (argv[argc]) + 1;
+    }
+
+  copy = (char **) malloc ((argc + 1) * sizeof (char *) + len);
+  if (copy == NULL)
+    return NULL;
+
+  p = (char *) copy + (argc + 1) * sizeof (char *);
+  for (i = 0; i < argc; ++i)
+    {
+      copy[i] = p;
+      strcpy (p, argv[i]);
+      p += strlen (argv[i]) + 1;
+    }
+  copy[argc] = 0;
+
+  return copy;
+}
+
+/* Analyze a bfd and set various fields in the state struct.  */
+
+void
+sim_analyze_program (sd, prog_bfd)
+     SIM_DESC sd;
+     bfd *prog_bfd;
+{
+  asection *s;
+
+  STATE_PROG_BFD (sd) = prog_bfd;
+  STATE_START_ADDR (sd) = bfd_get_start_address (prog_bfd);
+
+  for (s = prog_bfd->sections; s; s = s->next)
+    if (strcmp (bfd_get_section_name (prog_bfd, s), ".text") == 0)
+      {
+	STATE_TEXT_SECTION (sd) = s;
+	STATE_TEXT_START (sd) = bfd_get_section_vma (prog_bfd, s);
+	STATE_TEXT_END (sd) = STATE_TEXT_START (sd) + bfd_section_size (prog_bfd, s);
+	break;
+      }
+}