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authorMark Kettenis <kettenis@gnu.org>2005-07-15 20:10:19 +0000
committerMark Kettenis <kettenis@gnu.org>2005-07-15 20:10:19 +0000
commit37191c9c2e0908b431866448db97b6501818af5f (patch)
treece5aa08c08250aa4040b21a4ad1aad7c1ae95aa4 /gdb/sparc64fbsd-nat.c
parentba2a7846f277d1f2aae84551e4b60a08c998274f (diff)
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Marcel Moolenaar <marcel@xcllnt.net>
* sparc64fbsd-nat.c: Include "regcache.h", <sys/types.h>, <machine/pcb.h> and "bsd-kvm.h". (sparc64fbsd_kvm_supply_pcb): New function. (_initialize_sparc64fbsd_nat): Enable libkvm interface. * config/sparc/fbsd.mh (NATDEPFILES): Add bsd-kvm.o. (LOADLIBES): New variable. * Makefile.in (sparc64fbsd-nat.o): Update dependencies.
Diffstat (limited to 'gdb/sparc64fbsd-nat.c')
-rw-r--r--gdb/sparc64fbsd-nat.c39
1 files changed, 39 insertions, 0 deletions
diff --git a/gdb/sparc64fbsd-nat.c b/gdb/sparc64fbsd-nat.c
index dab419a..47e6ef6 100644
--- a/gdb/sparc64fbsd-nat.c
+++ b/gdb/sparc64fbsd-nat.c
@@ -20,11 +20,47 @@
Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "regcache.h"
#include "target.h"
#include "fbsd-nat.h"
#include "sparc64-tdep.h"
#include "sparc-nat.h"
+
+
+/* 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;
+}
+
/* Provide a prototype to silence -Wmissing-prototypes. */
void _initialize_sparc64fbsd_nat (void);
@@ -42,4 +78,7 @@ _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);
}