1 files changed, 107 insertions, 0 deletions
diff --git a/gdb/sh-netbsd-nat.c b/gdb/sh-netbsd-nat.c
new file mode 100644
index 0000000..fcdc4ef
--- /dev/null
+++ b/gdb/sh-netbsd-nat.c
@@ -0,0 +1,107 @@
+/* Native-dependent code for NetBSD/sh.
+
+   Copyright (C) 2002-2020 Free Software Foundation, Inc.
+
+   Contributed by Wasabi Systems, 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 "inferior.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#include "sh-tdep.h"
+#include "inf-ptrace.h"
+#include "netbsd-nat.h"
+#include "regcache.h"
+
+struct sh_nbsd_nat_target final : public nbsd_nat_target
+{
+  void fetch_registers (struct regcache *, int) override;
+  void store_registers (struct regcache *, int) override;
+};
+
+static sh_nbsd_nat_target the_sh_nbsd_nat_target;
+
+/* Determine if PT_GETREGS fetches this register.  */
+#define GETREGS_SUPPLIES(gdbarch, regno) \
+  (((regno) >= R0_REGNUM && (regno) <= (R0_REGNUM + 15)) \
+|| (regno) == gdbarch_pc_regnum (gdbarch) || (regno) == PR_REGNUM \
+|| (regno) == MACH_REGNUM || (regno) == MACL_REGNUM \
+|| (regno) == SR_REGNUM)
+
+/* Sizeof `struct reg' in <machine/reg.h>.  */
+#define SHNBSD_SIZEOF_GREGS	(21 * 4)
+
+void
+sh_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno)
+{
+  pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
+
+  if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno))
+    {
+      struct reg inferior_registers;
+
+      if (ptrace (PT_GETREGS, pid,
+		  (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
+	perror_with_name (_("Couldn't get registers"));
+
+      sh_corefile_supply_regset (&sh_corefile_gregset, regcache, regno,
+				 (char *) &inferior_registers,
+				 SHNBSD_SIZEOF_GREGS);
+
+      if (regno != -1)
+	return;
+    }
+}
+
+void
+sh_nbsd_nat_target::store_registers (struct regcache *regcache, int regno)
+{
+  pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
+
+  if (regno == -1 || GETREGS_SUPPLIES (regcache->arch (), regno))
+    {
+      struct reg inferior_registers;
+
+      if (ptrace (PT_GETREGS, pid,
+		  (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
+	perror_with_name (_("Couldn't get registers"));
+
+      sh_corefile_collect_regset (&sh_corefile_gregset, regcache, regno,
+				  (char *) &inferior_registers,
+				  SHNBSD_SIZEOF_GREGS);
+
+      if (ptrace (PT_SETREGS, pid,
+		  (PTRACE_TYPE_ARG3) &inferior_registers, lwp) == -1)
+	perror_with_name (_("Couldn't set registers"));
+
+      if (regno != -1)
+	return;
+    }
+}
+
+void _initialize_shnbsd_nat ();
+void
+_initialize_shnbsd_nat ()
+{
+  add_inf_child_target (&the_sh_nbsd_nat_target);
+}