Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 99 insertions, 0 deletions

diff --git a/sim/common/hw-alloc.c b/sim/common/hw-alloc.c
new file mode 100644
index 0000000..e64ae82
--- /dev/null
+++ b/sim/common/hw-alloc.c
@@ -0,0 +1,99 @@
+/* Hardware memory allocator.
+   Copyright (C) 1998 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 "hw-main.h"
+#include "hw-base.h"
+
+
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+
+struct hw_alloc_data {
+  void *alloc;
+  int zalloc_p;
+  struct hw_alloc_data *next;
+};
+
+void
+create_hw_alloc_data (struct hw *me)
+{
+  /* NULL */
+}
+
+void
+delete_hw_alloc_data (struct hw *me)
+{
+  if (me->alloc_of_hw != NULL)
+    hw_abort (me, "hw-alloc botch");
+  while (me->alloc_of_hw != NULL)
+    {
+      hw_free (me, me->alloc_of_hw->alloc);
+    }
+}
+
+
+
+void *
+hw_zalloc (struct hw *me, unsigned long size)
+{
+  struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
+  memory->alloc = zalloc (size);
+  memory->zalloc_p = 1;
+  memory->next = me->alloc_of_hw;
+  me->alloc_of_hw = memory;
+  return memory->alloc;
+}
+
+void *
+hw_malloc (struct hw *me, unsigned long size)
+{
+  struct hw_alloc_data *memory = ZALLOC (struct hw_alloc_data);
+  memory->alloc = zalloc (size);
+  memory->zalloc_p = 0;
+  memory->next = me->alloc_of_hw;
+  me->alloc_of_hw = memory;
+  return memory->alloc;
+}
+
+void
+hw_free (struct hw *me,
+	 void *alloc)
+{
+  struct hw_alloc_data **memory;
+  for (memory = &me->alloc_of_hw;
+       *memory != NULL;
+       memory = &(*memory)->next)
+    {
+      if ((*memory)->alloc == alloc)
+	{
+	  struct hw_alloc_data *die = (*memory);
+	  (*memory) = die->next;
+	  if (die->zalloc_p)
+	    zfree (die->alloc);
+	  else
+	    free (die->alloc);
+	  zfree (die);
+	  return;
+	}
+    }
+  hw_abort (me, "free of memory not belonging to a device");
+}