#include "defs.h"
#include "inferior.h"
#include "regcache.h"
+#include "target.h"
+#include "gdb_assert.h"
#include <signal.h>
#include "gdb_string.h"
#include <sys/ptrace.h>
return;
}
}
+
\f
+/* Fetch StackGhost Per-Process XOR cookie. */
+
+LONGEST
+sparc_xfer_wcookie (struct target_ops *ops, enum target_object object,
+ const char *annex, void *readbuf, const void *writebuf,
+ ULONGEST offset, LONGEST len)
+{
+ unsigned long wcookie = 0;
+ char *buf = (char *)&wcookie;
+
+ gdb_assert (object == TARGET_OBJECT_WCOOKIE);
+ gdb_assert (readbuf && writebuf == NULL);
+
+ if (offset >= sizeof (unsigned long))
+ return -1;
+#ifdef PT_WCOOKIE
+ /* If PT_WCOOKIE is defined (by <sys/ptrace.h>), assume we're
+ running on an OpenBSD release that uses StackGhost (3.1 or
+ later). As of release 3.4, OpenBSD doesn't use a randomized
+ cookie yet. */
+ wcookie = 0x3;
+#endif /* PT_WCOOKIE */
+
+ if (len > sizeof (unsigned long) - offset)
+ len = sizeof (unsigned long) - offset;
+
+ memcpy (readbuf, buf + offset, len);
+ return len;
+}
+
+\f
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc_nat (void);