1 files changed, 71 insertions, 0 deletions
diff --git a/gdb/sparc-netbsd-nat.c b/gdb/sparc-netbsd-nat.c
new file mode 100644
index 0000000..7138d7d
--- /dev/null
+++ b/gdb/sparc-netbsd-nat.c
@@ -0,0 +1,71 @@
+/* Native-dependent code for NetBSD/sparc.
+
+   Copyright (C) 2002-2020 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 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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, 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 (SPARC_SP_REGNUM, &pcb->pcb_sp);
+  regcache->raw_supply (SPARC_O7_REGNUM, &pcb->pcb_pc);
+  regcache->raw_supply (SPARC32_PSR_REGNUM, &pcb->pcb_psr);
+  regcache->raw_supply (SPARC32_WIM_REGNUM, &pcb->pcb_wim);
+  regcache->raw_supply (SPARC32_PC_REGNUM, &pcb->pcb_pc);
+
+  sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+  return 1;
+}
+
+static sparc_target<inf_ptrace_target> the_sparc_nbsd_nat_target;
+
+void _initialize_sparcnbsd_nat ();
+void
+_initialize_sparcnbsd_nat ()
+{
+  sparc_gregmap = &sparc32nbsd_gregmap;
+  sparc_fpregmap = &sparc32_bsd_fpregmap;
+
+  add_inf_child_target (&sparc_nbsd_nat_target);
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (sparc32nbsd_supply_pcb);
+}