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, 188 insertions, 0 deletions

diff --git a/gdb/sparc64-netbsd-nat.c b/gdb/sparc64-netbsd-nat.c
new file mode 100644
index 0000000..5e249b6
--- /dev/null
+++ b/gdb/sparc64-netbsd-nat.c
@@ -0,0 +1,188 @@
+/* Native-dependent code for NetBSD/sparc64.
+
+   Copyright (C) 2003-2020 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 "gdbcore.h"
+#include "regcache.h"
+#include "target.h"
+
+#include "sparc64-tdep.h"
+#include "sparc-nat.h"
+
+/* NetBSD is different from the other OSes that support both SPARC and
+   UltraSPARC in that the result of ptrace(2) depends on whether the
+   traced process is 32-bit or 64-bit.  */
+
+static void
+sparc64nbsd_supply_gregset (const struct sparc_gregmap *gregmap,
+			    struct regcache *regcache,
+			    int regnum, const void *gregs)
+{
+  int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
+
+  if (sparc32)
+    sparc32_supply_gregset (&sparc32nbsd_gregmap, regcache, regnum, gregs);
+  else
+    sparc64_supply_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
+}
+
+static void
+sparc64nbsd_collect_gregset (const struct sparc_gregmap *gregmap,
+			     const struct regcache *regcache,
+			     int regnum, void *gregs)
+{
+  int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
+
+  if (sparc32)
+    sparc32_collect_gregset (&sparc32nbsd_gregmap, regcache, regnum, gregs);
+  else
+    sparc64_collect_gregset (&sparc64nbsd_gregmap, regcache, regnum, gregs);
+}
+
+static void
+sparc64nbsd_supply_fpregset (const struct sparc_fpregmap *fpregmap,
+			     struct regcache *regcache,
+			     int regnum, const void *fpregs)
+{
+  int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
+
+  if (sparc32)
+    sparc32_supply_fpregset (&sparc32_bsd_fpregmap, regcache, regnum, fpregs);
+  else
+    sparc64_supply_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
+}
+
+static void
+sparc64nbsd_collect_fpregset (const struct sparc_fpregmap *fpregmap,
+			      const struct regcache *regcache,
+			      int regnum, void *fpregs)
+{
+  int sparc32 = (gdbarch_ptr_bit (regcache->arch ()) == 32);
+
+  if (sparc32)
+    sparc32_collect_fpregset (&sparc32_bsd_fpregmap, regcache, regnum, fpregs);
+  else
+    sparc64_collect_fpregset (&sparc64_bsd_fpregmap, regcache, regnum, fpregs);
+}
+
+/* Determine whether `gregset_t' contains register REGNUM.  */
+
+static int
+sparc64nbsd_gregset_supplies_p (struct gdbarch *gdbarch, int regnum)
+{
+  if (gdbarch_ptr_bit (gdbarch) == 32)
+    return sparc32_gregset_supplies_p (gdbarch, regnum);
+
+  /* Integer registers.  */
+  if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_G7_REGNUM)
+      || (regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM)
+      || (regnum >= SPARC_L0_REGNUM && regnum <= SPARC_L7_REGNUM)
+      || (regnum >= SPARC_I0_REGNUM && regnum <= SPARC_I7_REGNUM))
+    return 1;
+
+  /* Control registers.  */
+  if (regnum == SPARC64_PC_REGNUM
+      || regnum == SPARC64_NPC_REGNUM
+      || regnum == SPARC64_STATE_REGNUM
+      || regnum == SPARC64_Y_REGNUM)
+    return 1;
+
+  return 0;
+}
+
+/* Determine whether `fpregset_t' contains register REGNUM.  */
+
+static int
+sparc64nbsd_fpregset_supplies_p (struct gdbarch *gdbarch, int regnum)
+{
+  if (gdbarch_ptr_bit (gdbarch) == 32)
+    return sparc32_fpregset_supplies_p (gdbarch, regnum);
+
+  /* Floating-point registers.  */
+  if ((regnum >= SPARC_F0_REGNUM && regnum <= SPARC_F31_REGNUM)
+      || (regnum >= SPARC64_F32_REGNUM && regnum <= SPARC64_F62_REGNUM))
+    return 1;
+
+  /* Control registers.  */
+  if (regnum == SPARC64_FSR_REGNUM)
+    return 1;
+
+  return 0;
+}
+
+
+/* Support for debugging kernel virtual memory images.  */
+
+#include <sys/types.h>
+#include <machine/pcb.h>
+
+#include "bsd-kvm.h"
+
+static int
+sparc64nbsd_supply_pcb (struct regcache *regcache, struct pcb *pcb)
+{
+  u_int64_t state;
+  int regnum;
+
+  /* The following is true for NetBSD 1.6.2:
+
+     The pcb contains %sp and %pc, %pstate and %cwp.  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;
+
+  /* If the program counter is zero, this is probably a core dump, and
+     we can get %pc from the stack.  */
+  if (pcb->pcb_pc == 0)
+      read_memory(pcb->pcb_sp + BIAS - 176 + (11 * 8), 
+		  (gdb_byte *)&pcb->pcb_pc, sizeof pcb->pcb_pc);
+
+  regcache->raw_supply (SPARC_SP_REGNUM, &pcb->pcb_sp);
+  regcache->raw_supply (SPARC64_PC_REGNUM, &pcb->pcb_pc);
+
+  state = pcb->pcb_pstate << 8 | pcb->pcb_cwp;
+  regcache->raw_supply (SPARC64_STATE_REGNUM, &state);
+
+  sparc_supply_rwindow (regcache, pcb->pcb_sp, -1);
+
+  return 1;
+}
+
+/* We've got nothing to add to the generic SPARC target.  */
+static sparc_target<inf_ptrace_target> the_sparc64_nbsd_nat_target;
+
+void _initialize_sparc64nbsd_nat ();
+void
+_initialize_sparc64nbsd_nat ()
+{
+  sparc_supply_gregset = sparc64nbsd_supply_gregset;
+  sparc_collect_gregset = sparc64nbsd_collect_gregset;
+  sparc_supply_fpregset = sparc64nbsd_supply_fpregset;
+  sparc_collect_fpregset = sparc64nbsd_collect_fpregset;
+  sparc_gregset_supplies_p = sparc64nbsd_gregset_supplies_p;
+  sparc_fpregset_supplies_p = sparc64nbsd_fpregset_supplies_p;
+
+  add_inf_child_target (&the_sparc64_nbsd_nat_target);
+
+  /* Support debugging kernel virtual memory images.  */
+  bsd_kvm_add_target (sparc64nbsd_supply_pcb);
+}