Normalize names of the NetBSD files

The files used to be named 'nbsd', which incorrectly reflects
the name of the OS and confuses it with other BSD derived OSes.

gdb/ChangeLog:

        * Makefile.in (ALL_64_TARGET_OBS, ALL_TARGET_OBS)
        HFILES_NO_SRCDIR, ALLDEPFILES): Rename files.
        * alpha-bsd-nat.c: Adjust include.
        * alpha-bsd-tdep.h: Adjust comment.
        * alpha-nbsd-tdep.c: Rename to ...
        * alpha-netbsd-tdep.c: ... this, adjust include.
        * amd64-nbsd-nat.c: Rename to ...
        * amd64-netbsd-nat.c: ... this, adjust include.
        * amd64-nbsd-tdep.c: Rename to ...
        * amd64-netbsd-tdep.c: ... this, adjust include.
        * amd64-tdep.h: Adjust include.
        * arm-nbsd-nat.c: Rename to ...
        * arm-netbsd-nat.c: ... this, adjust include.
        * arm-nbsd-tdep.c: Rename to ...
        * arm-netbsd-tdep.c: ... this, adjust include.
        * arm-nbsd-tdep.h: Rename to ...
        * arm-netbsd-tdep.h: ... this, adjust include.
        * configure.nat: Adjust file lists.
        * configure.tgt: Likewise.
        * hppa-nbsd-nat.c: Rename to ...
        * hppa-netbsd-nat.c: ... this, adjust include.
        * hppa-nbsd-tdep.c: Rename to ...
        * hppa-netbsd-tdep.c: ... this, adjust include.
        * i386-nbsd-nat.c: Rename to ...
        * i386-netbsd-nat.c: ... this, adjust include.
        * i386-nbsd-tdep.c: Rename to ...
        * i386-netbsd-tdep.c: ... this, adjust include.
        * m68k-bsd-nat.c: Adjust include.
        * mips-nbsd-nat.c: Rename to ...
        * mips-netbsd-nat.c: ... this, adjust include.
        * mips-nbsd-tdep.c: Rename to ...
        * mips-netbsd-tdep.c: ... this, adjust include.
        * mips-nbsd-tdep.h: Rename to ...
        * mips-netbsd-tdep.h: ... this.
        * nbsd-nat.c: Rename to ...
        * netbsd-nat.c: ... this, adjust include.
        * nbsd-nat.h: Rename to ...
        * netbsd-nat.h: ... this, adjust include.
        * nbsd-tdep.c: Rename to ...
        * netbsd-tdep.c: ... this, adjust include.
        * nbsd-tdep.h: Rename to ...
        * netbsd-tdep.h: ... this.
        * ppc-nbsd-nat.c: Rename to ...
        * ppc-netbsd-nat.c: ... this, adjust include.
        * ppc-nbsd-tdep.c: Rename to ...
        * ppc-netbsd-tdep.c: ... this, adjust include and comment.
        * ppc-nbsd-tdep.h: Rename to ...
        * ppc-netbsd-tdep.h: ... this.
        * sh-nbsd-nat.c: Rename to ...
        * sh-netbsd-nat.c: ... this, adjust include.
        * sh-nbsd-tdep.c: Rename to ...
        * sh-netbsd-tdep.c: ... this, adjust include.
        * sparc-nbsd-nat.c: Rename to ...
        * sparc-netbsd-nat.c: ... this.
        * sparc-nbsd-tdep.c: Rename to ...
        * sparc-netbsd-tdep.c: ... this, adjust include.
        * sparc64-nbsd-nat.c: Rename to ...
        * sparc64-netbsd-nat.c: ... this.
        * sparc64-nbsd-tdep.c: Rename to ...
        * sparc64-netbsd-tdep.c: ... this, adjust include.
        * sparc64-tdep.h: Adjust comment.
        * vax-bsd-nat.c: Adjust include.
        * vax-nbsd-tdep.c: Rename to ...
        * vax-netbsd-tdep.c: ... this, adjust include.

1 files changed, 195 insertions, 0 deletions

diff --git a/gdb/ppc-netbsd-nat.c b/gdb/ppc-netbsd-nat.c
new file mode 100644
index 00000000000..6ecff118238
--- /dev/null
+++ b/gdb/ppc-netbsd-nat.c
@@ -0,0 +1,195 @@
+/* Native-dependent code for NetBSD/powerpc.
+
+   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/>.  */
+
+/* We define this to get types like register_t.  */
+#define _KERNTYPES
+#include "defs.h"
+
+#include <sys/types.h>
+#include <sys/ptrace.h>
+#include <machine/reg.h>
+#include <machine/frame.h>
+#include <machine/pcb.h>
+
+#include "gdbcore.h"
+#include "inferior.h"
+#include "regcache.h"
+
+#include "ppc-tdep.h"
+#include "ppc-netbsd-tdep.h"
+#include "bsd-kvm.h"
+#include "inf-ptrace.h"
+#include "netbsd-nat.h"
+
+struct ppc_nbsd_nat_target final : public nbsd_nat_target
+{
+  void fetch_registers (struct regcache *, int) override;
+  void store_registers (struct regcache *, int) override;
+};
+
+static ppc_nbsd_nat_target the_ppc_nbsd_nat_target;
+
+/* Returns true if PT_GETREGS fetches this register.  */
+
+static int
+getregs_supplies (struct gdbarch *gdbarch, int regnum)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  return ((regnum >= tdep->ppc_gp0_regnum
+           && regnum < tdep->ppc_gp0_regnum + ppc_num_gprs)
+          || regnum == tdep->ppc_lr_regnum
+          || regnum == tdep->ppc_cr_regnum
+          || regnum == tdep->ppc_xer_regnum
+          || regnum == tdep->ppc_ctr_regnum
+	  || regnum == gdbarch_pc_regnum (gdbarch));
+}
+
+/* Like above, but for PT_GETFPREGS.  */
+
+static int
+getfpregs_supplies (struct gdbarch *gdbarch, int regnum)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  /* FIXME: jimb/2004-05-05: Some PPC variants don't have floating
+     point registers.  Traditionally, GDB's register set has still
+     listed the floating point registers for such machines, so this
+     code is harmless.  However, the new E500 port actually omits the
+     floating point registers entirely from the register set --- they
+     don't even have register numbers assigned to them.
+
+     It's not clear to me how best to update this code, so this assert
+     will alert the first person to encounter the NetBSD/E500
+     combination to the problem.  */
+  gdb_assert (ppc_floating_point_unit_p (gdbarch));
+
+  return ((regnum >= tdep->ppc_fp0_regnum
+           && regnum < tdep->ppc_fp0_regnum + ppc_num_fprs)
+	  || regnum == tdep->ppc_fpscr_regnum);
+}
+
+void
+ppc_nbsd_nat_target::fetch_registers (struct regcache *regcache, int regnum)
+{
+  struct gdbarch *gdbarch = regcache->arch ();
+  pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
+
+  if (regnum == -1 || getregs_supplies (gdbarch, regnum))
+    {
+      struct reg regs;
+
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
+        perror_with_name (_("Couldn't get registers"));
+
+      ppc_supply_gregset (&ppcnbsd_gregset, regcache,
+			  regnum, &regs, sizeof regs);
+    }
+
+  if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
+    {
+      struct fpreg fpregs;
+
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
+	perror_with_name (_("Couldn't get FP registers"));
+
+      ppc_supply_fpregset (&ppcnbsd_fpregset, regcache,
+			   regnum, &fpregs, sizeof fpregs);
+    }
+}
+
+void
+ppc_nbsd_nat_target::store_registers (struct regcache *regcache, int regnum)
+{
+  struct gdbarch *gdbarch = regcache->arch ();
+  pid_t pid = regcache->ptid ().pid ();
+  int lwp = regcache->ptid ().lwp ();
+
+  if (regnum == -1 || getregs_supplies (gdbarch, regnum))
+    {
+      struct reg regs;
+
+      if (ptrace (PT_GETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
+	perror_with_name (_("Couldn't get registers"));
+
+      ppc_collect_gregset (&ppcnbsd_gregset, regcache,
+			   regnum, &regs, sizeof regs);
+
+      if (ptrace (PT_SETREGS, pid, (PTRACE_TYPE_ARG3) &regs, lwp) == -1)
+	perror_with_name (_("Couldn't write registers"));
+    }
+
+  if (regnum == -1 || getfpregs_supplies (gdbarch, regnum))
+    {
+      struct fpreg fpregs;
+
+      if (ptrace (PT_GETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
+	perror_with_name (_("Couldn't get FP registers"));
+
+      ppc_collect_fpregset (&ppcnbsd_fpregset, regcache,
+			    regnum, &fpregs, sizeof fpregs);
+
+      if (ptrace (PT_SETFPREGS, pid, (PTRACE_TYPE_ARG3) &fpregs, lwp) == -1)
+	perror_with_name (_("Couldn't set FP registers"));
+    }
+}
+
+static int
+ppcnbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  struct switchframe sf;
+  struct callframe cf;
+  struct gdbarch *gdbarch = regcache->arch ();
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  int i;
+
+  /* The stack pointer shouldn't be zero.  */
+  if (pcb->pcb_sp == 0)
+    return 0;
+
+  read_memory (pcb->pcb_sp, (gdb_byte *)&sf, sizeof sf);
+  regcache->raw_supply (tdep->ppc_cr_regnum, &sf.cr);
+  regcache->raw_supply (tdep->ppc_gp0_regnum + 2, &sf.fixreg2);
+  for (i = 0 ; i < 19 ; i++)
+    regcache->raw_supply (tdep->ppc_gp0_regnum + 13 + i, &sf.fixreg[i]);
+
+  read_memory(sf.sp, (gdb_byte *)&cf, sizeof(cf));
+  regcache->raw_supply (tdep->ppc_gp0_regnum + 30, &cf.r30);
+  regcache->raw_supply (tdep->ppc_gp0_regnum + 31, &cf.r31);
+  regcache->raw_supply (tdep->ppc_gp0_regnum + 1, &cf.sp);
+
+  read_memory(cf.sp, (gdb_byte *)&cf, sizeof(cf));
+  regcache->raw_supply (tdep->ppc_lr_regnum, &cf.lr);
+  regcache->raw_supply (gdbarch_pc_regnum (gdbarch), &cf.lr);
+
+  return 1;
+}
+
+void _initialize_ppcnbsd_nat ();
+void
+_initialize_ppcnbsd_nat ()
+{
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (ppcnbsd_supply_pcb);
+
+  add_inf_child_target (&the_ppc_nbsd_nat_target);
+}