1 files changed, 123 insertions, 0 deletions
diff --git a/gdb/mips-netbsd-nat.c b/gdb/mips-netbsd-nat.c
new file mode 100644
index 0000000..51ea1cb
--- /dev/null
+++ b/gdb/mips-netbsd-nat.c
@@ -0,0 +1,123 @@
+/* Native-dependent code for MIPS systems running NetBSD.
+
+   Copyright (C) 2000-2020 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/>.  */
+
+/* We define this to get types like register_t.  */
+#define _KERNTYPES
+#include "defs.h"
+#include "inferior.h"
+#include "regcache.h"
+#include "target.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+
+#include "mips-tdep.h"
+#include "mips-netbsd-tdep.h"
+#include "inf-ptrace.h"
+
+class mips_nbsd_nat_target final : public inf_ptrace_target
+{
+  void fetch_registers (struct regcache *, int) override;
+  void store_registers (struct regcache *, int) override;
+};
+
+static mips_nbsd_nat_target the_mips_nbsd_nat_target;
+
+/* Determine if PT_GETREGS fetches this register.  */
+static int
+getregs_supplies (struct gdbarch *gdbarch, int regno)
+{
+  return ((regno) >= MIPS_ZERO_REGNUM
+	  && (regno) <= gdbarch_pc_regnum (gdbarch));
+}
+
+void
+mips_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regno)
+{
+  pid_t pid = regcache->ptid ().pid ();
+
+  struct gdbarch *gdbarch = regcache->arch ();
+  if (regno == -1 || getregs_supplies (gdbarch, regno))
+    {
+      struct reg regs;
+
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+	perror_with_name (_("Couldn't get registers"));
+      
+      mipsnbsd_supply_reg (regcache, (char *) &regs, regno);
+      if (regno != -1)
+	return;
+    }
+
+  if (regno == -1
+      || regno >= gdbarch_fp0_regnum (regcache->arch ()))
+    {
+      struct fpreg fpregs;
+
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't get floating point status"));
+
+      mipsnbsd_supply_fpreg (regcache, (char *) &fpregs, regno);
+    }
+}
+
+void
+mips_nbsd_nat_target::store_registers (struct regcache *regcache, int regno)
+{
+  pid_t pid = regcache->ptid ().pid ();
+
+  struct gdbarch *gdbarch = regcache->arch ();
+  if (regno == -1 || getregs_supplies (gdbarch, regno))
+    {
+      struct reg regs;
+
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+	perror_with_name (_("Couldn't get registers"));
+
+      mipsnbsd_fill_reg (regcache, (char *) &regs, regno);
+
+      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, 0) == -1)
+	perror_with_name (_("Couldn't write registers"));
+
+      if (regno != -1)
+	return;
+    }
+
+  if (regno == -1
+      || regno >= gdbarch_fp0_regnum (regcache->arch ()))
+    {
+      struct fpreg fpregs; 
+
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't get floating point status"));
+
+      mipsnbsd_fill_fpreg (regcache, (char *) &fpregs, regno);
+
+      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
+	perror_with_name (_("Couldn't write floating point status"));
+    }
+}
+
+void _initialize_mipsnbsd_nat ();
+void
+_initialize_mipsnbsd_nat ()
+{
+  add_inf_child_target (&the_mips_nbsd_nat_target);
+}