/* Native-dependent code for FreeBSD/sparc64.
- Copyright 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
This file is part of GDB.
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. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
+#include "regcache.h"
#include "target.h"
#include "fbsd-nat.h"
#include "sparc64-tdep.h"
#include "sparc-nat.h"
+\f
+
+/* Support for debugging kernel virtual memory images. */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+sparc64fbsd_kvm_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+ /* The following is true for FreeBSD 5.4:
+
+ The pcb contains %sp and %pc. Since the register windows are
+ explicitly flushed, we can find the `local' and `in' registers on
+ the stack. */
+
+ /* The stack pointer shouldn't be zero. */
+ if (pcb->pcb_sp == 0)
+ return 0;
+
+ regcache_raw_supply (regcache, SPARC_SP_REGNUM, &pcb->pcb_sp);
+ regcache_raw_supply (regcache, SPARC64_PC_REGNUM, &pcb->pcb_pc);
+
+ /* Synthesize %npc. */
+ pcb->pcb_pc += 4;
+ regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, &pcb->pcb_pc);
+
+ /* Read `local' and `in' registers from the stack. */
+ sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+ return 1;
+}
+\f
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc64fbsd_nat (void);
add_target (t);
sparc_gregset = &sparc64fbsd_gregset;
+
+ /* Support debugging kernel virtual memory images. */
+ bsd_kvm_add_target (sparc64fbsd_kvm_supply_pcb);
}