* sparc64nbsd-nat.c: Include "regcache.h", <sys/types.h>,

<machine/pcb.h> and "bsd-kvm.h".
(sparc64nbsd_supply_pcb): New function.
(_initialize_sparc64nbsd_nat): Renamed from
_initialize_sparcnbsd_nat.  Enable libkvm interface.
* Makefile.in (sparc64nbsd-nat.o): Update dependencies.
* config/sparc/nbsd64.mh (NATDEPFILES): Add bsd-kvm.o
(LOADLIBES): New variable.

1 files changed, 37 insertions, 2 deletions

diff --git a/gdb/sparc64nbsd-nat.c b/gdb/sparc64nbsd-nat.c
index 9157703..7d554cf 100644
--- a/gdb/sparc64nbsd-nat.c
+++ b/gdb/sparc64nbsd-nat.c
@@ -20,6 +20,7 @@
    Boston, MA 02111-1307, USA.  */
 
 #include "defs.h"
+#include "regcache.h"
 
 #include "sparc64-tdep.h"
 #include "sparc-nat.h"
@@ -122,13 +123,44 @@ sparc64nbsd_fpregset_supplies_p (int regnum)
 
   return 0;
 }
+
+
+/* Support for debugging kernel virtual memory images.  */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  int regnum;
+
+  /* The following is true for NetBSD 1.6.2:
+
+     The pcb contains %sp and %pc, %psr and %wim.  From this information
+     we reconstruct the register state as it would look when we just
+     returned from cpu_switch().  */
+
+  /* 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);
+
+  sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+  return 1;
+}
 
 
 /* Provide a prototype to silence -Wmissing-prototypes.  */
-void _initialize_sparcnbsd_nat (void);
+void _initialize_sparc64nbsd_nat (void);
 
 void
-_initialize_sparcnbsd_nat (void)
+_initialize_sparc64nbsd_nat (void)
 {
   sparc_supply_gregset = sparc64nbsd_supply_gregset;
   sparc_collect_gregset = sparc64nbsd_collect_gregset;
@@ -136,4 +168,7 @@ _initialize_sparcnbsd_nat (void)
   sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
   sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
   sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (sparc64nbsd_supply_pcb);
 }