gdb/gdbserver/

[deliverable/binutils-gdb.git] / gdb / sparcnbsd-nat.c

diff --git a/gdb/sparcnbsd-nat.c b/gdb/sparcnbsd-nat.c
index 9038ea334b641dcdc355e14357df8f14e2b55f76..1be331fba3a5f9ccf31b58f36dc15080830f1645 100644 (file)
--- a/gdb/sparcnbsd-nat.c
+++ b/gdb/sparcnbsd-nat.c
@@ -1,12 +1,13 @@
 /* Native-dependent code for NetBSD/sparc.
 
-   Copyright 2002, 2003, 2004 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2003, 2004, 2007, 2008, 2009, 2010
+   Free Software Foundation, Inc.
 
    This file is part of GDB.
 
    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 of the License, or
+   the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
@@ -15,15 +16,47 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "defs.h"
+#include "regcache.h"
+#include "target.h"
 
 #include "sparc-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
+sparc32nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  /* The following is true for NetBSD 1.6.2:
+
+     The pcb contains %sp, %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, SPARC_O7_REGNUM, &pcb->pcb_pc);
+  regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, &pcb->pcb_psr);
+  regcache_raw_supply (regcache, SPARC32_WIM_REGNUM, &pcb->pcb_wim);
+  regcache_raw_supply (regcache, SPARC32_PC_REGNUM, &pcb->pcb_pc);
+
+  sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+  return 1;
+}
+\f
+
 /* Provide a prototype to silence -Wmissing-prototypes.  */
 void _initialize_sparcnbsd_nat (void);
 
@@ -31,4 +64,10 @@ void
 _initialize_sparcnbsd_nat (void)
 {
   sparc_gregset = &sparc32nbsd_gregset;
+
+  /* We've got nothing to add to the generic SPARC target.  */
+  add_target (sparc_target ());
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (sparc32nbsd_supply_pcb);
 }