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, 632 insertions, 0 deletions

diff --git a/gdb/netbsd-tdep.c b/gdb/netbsd-tdep.c
new file mode 100644
index 00000000000..0fa2d97b04a
--- /dev/null
+++ b/gdb/netbsd-tdep.c
@@ -0,0 +1,632 @@
+/* Common target-dependent code for NetBSD systems.
+
+   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 "auxv.h"
+#include "solib-svr4.h"
+#include "netbsd-tdep.h"
+#include "gdbarch.h"
+#include "objfiles.h"
+#include "xml-syscall.h"
+
+/* Flags in the 'kve_protection' field in struct kinfo_vmentry.  These
+   match the KVME_PROT_* constants in <sys/sysctl.h>.  */
+
+#define	KINFO_VME_PROT_READ	0x00000001
+#define	KINFO_VME_PROT_WRITE	0x00000002
+#define	KINFO_VME_PROT_EXEC	0x00000004
+
+/* Flags in the 'kve_flags' field in struct kinfo_vmentry.  These
+   match the KVME_FLAG_* constants in <sys/sysctl.h>.  */
+
+#define	KINFO_VME_FLAG_COW		0x00000001
+#define	KINFO_VME_FLAG_NEEDS_COPY	0x00000002
+#define	KINFO_VME_FLAG_NOCOREDUMP	0x00000004
+#define	KINFO_VME_FLAG_PAGEABLE		0x00000008
+#define	KINFO_VME_FLAG_GROWS_UP		0x00000010
+#define	KINFO_VME_FLAG_GROWS_DOWN	0x00000020
+
+/* FIXME: kettenis/20060115: We should really eliminate the next two
+   functions completely.  */
+
+struct link_map_offsets *
+nbsd_ilp32_solib_svr4_fetch_link_map_offsets (void)
+{
+  return svr4_ilp32_fetch_link_map_offsets ();
+}
+
+struct link_map_offsets *
+nbsd_lp64_solib_svr4_fetch_link_map_offsets (void)
+{
+  return svr4_lp64_fetch_link_map_offsets ();
+}
+
+int
+nbsd_pc_in_sigtramp (CORE_ADDR pc, const char *func_name)
+{
+  /* Check for libc-provided signal trampoline.  All such trampolines
+     have function names which begin with "__sigtramp".  */
+
+  return (func_name != NULL
+	  && startswith (func_name, "__sigtramp"));
+}
+
+/* This enum is derived from NETBSD's <sys/signal.h>.  */
+
+enum
+  {
+   NBSD_SIGHUP = 1,
+   NBSD_SIGINT = 2,
+   NBSD_SIGQUIT = 3,
+   NBSD_SIGILL = 4,
+   NBSD_SIGTRAP = 5,
+   NBSD_SIGABRT = 6,
+   NBSD_SIGEMT = 7,
+   NBSD_SIGFPE = 8,
+   NBSD_SIGKILL = 9,
+   NBSD_SIGBUS = 10,
+   NBSD_SIGSEGV = 11,
+   NBSD_SIGSYS = 12,
+   NBSD_SIGPIPE = 13,
+   NBSD_SIGALRM = 14,
+   NBSD_SIGTERM = 15,
+   NBSD_SIGURG = 16,
+   NBSD_SIGSTOP = 17,
+   NBSD_SIGTSTP = 18,
+   NBSD_SIGCONT = 19,
+   NBSD_SIGCHLD = 20,
+   NBSD_SIGTTIN = 21,
+   NBSD_SIGTTOU = 22,
+   NBSD_SIGIO = 23,
+   NBSD_SIGXCPU = 24,
+   NBSD_SIGXFSZ = 25,
+   NBSD_SIGVTALRM = 26,
+   NBSD_SIGPROF = 27,
+   NBSD_SIGWINCH = 28,
+   NBSD_SIGINFO = 29,
+   NBSD_SIGUSR1 = 30,
+   NBSD_SIGUSR2 = 31,
+   NBSD_SIGPWR = 32,
+   NBSD_SIGRTMIN = 33,
+   NBSD_SIGRTMAX = 63,
+  };
+
+/* Implement the "gdb_signal_from_target" gdbarch method.  */
+
+static enum gdb_signal
+nbsd_gdb_signal_from_target (struct gdbarch *gdbarch, int signal)
+{
+  switch (signal)
+    {
+    case 0:
+      return GDB_SIGNAL_0;
+
+    case NBSD_SIGHUP:
+      return GDB_SIGNAL_HUP;
+
+    case NBSD_SIGINT:
+      return GDB_SIGNAL_INT;
+
+    case NBSD_SIGQUIT:
+      return GDB_SIGNAL_QUIT;
+
+    case NBSD_SIGILL:
+      return GDB_SIGNAL_ILL;
+
+    case NBSD_SIGTRAP:
+      return GDB_SIGNAL_TRAP;
+
+    case NBSD_SIGABRT:
+      return GDB_SIGNAL_ABRT;
+
+    case NBSD_SIGEMT:
+      return GDB_SIGNAL_EMT;
+
+    case NBSD_SIGFPE:
+      return GDB_SIGNAL_FPE;
+
+    case NBSD_SIGKILL:
+      return GDB_SIGNAL_KILL;
+
+    case NBSD_SIGBUS:
+      return GDB_SIGNAL_BUS;
+
+    case NBSD_SIGSEGV:
+      return GDB_SIGNAL_SEGV;
+
+    case NBSD_SIGSYS:
+      return GDB_SIGNAL_SYS;
+
+    case NBSD_SIGPIPE:
+      return GDB_SIGNAL_PIPE;
+
+    case NBSD_SIGALRM:
+      return GDB_SIGNAL_ALRM;
+
+    case NBSD_SIGTERM:
+      return GDB_SIGNAL_TERM;
+
+    case NBSD_SIGURG:
+      return GDB_SIGNAL_URG;
+
+    case NBSD_SIGSTOP:
+      return GDB_SIGNAL_STOP;
+
+    case NBSD_SIGTSTP:
+      return GDB_SIGNAL_TSTP;
+
+    case NBSD_SIGCONT:
+      return GDB_SIGNAL_CONT;
+
+    case NBSD_SIGCHLD:
+      return GDB_SIGNAL_CHLD;
+
+    case NBSD_SIGTTIN:
+      return GDB_SIGNAL_TTIN;
+
+    case NBSD_SIGTTOU:
+      return GDB_SIGNAL_TTOU;
+
+    case NBSD_SIGIO:
+      return GDB_SIGNAL_IO;
+
+    case NBSD_SIGXCPU:
+      return GDB_SIGNAL_XCPU;
+
+    case NBSD_SIGXFSZ:
+      return GDB_SIGNAL_XFSZ;
+
+    case NBSD_SIGVTALRM:
+      return GDB_SIGNAL_VTALRM;
+
+    case NBSD_SIGPROF:
+      return GDB_SIGNAL_PROF;
+
+    case NBSD_SIGWINCH:
+      return GDB_SIGNAL_WINCH;
+
+    case NBSD_SIGINFO:
+      return GDB_SIGNAL_INFO;
+
+    case NBSD_SIGUSR1:
+      return GDB_SIGNAL_USR1;
+
+    case NBSD_SIGUSR2:
+      return GDB_SIGNAL_USR2;
+
+    case NBSD_SIGPWR:
+      return GDB_SIGNAL_PWR;
+
+    /* SIGRTMIN and SIGRTMAX are not continuous in <gdb/signals.def>,
+       therefore we have to handle them here.  */
+    case NBSD_SIGRTMIN:
+      return GDB_SIGNAL_REALTIME_33;
+
+    case NBSD_SIGRTMAX:
+      return GDB_SIGNAL_REALTIME_63;
+    }
+
+  if (signal >= NBSD_SIGRTMIN + 1 && signal <= NBSD_SIGRTMAX - 1)
+    {
+      int offset = signal - NBSD_SIGRTMIN + 1;
+
+      return (enum gdb_signal) ((int) GDB_SIGNAL_REALTIME_34 + offset);
+    }
+
+  return GDB_SIGNAL_UNKNOWN;
+}
+
+/* Implement the "gdb_signal_to_target" gdbarch method.  */
+
+static int
+nbsd_gdb_signal_to_target (struct gdbarch *gdbarch,
+                enum gdb_signal signal)
+{
+  switch (signal)
+    {
+    case GDB_SIGNAL_0:
+      return 0;
+
+    case GDB_SIGNAL_HUP:
+      return NBSD_SIGHUP;
+
+    case GDB_SIGNAL_INT:
+      return NBSD_SIGINT;
+
+    case GDB_SIGNAL_QUIT:
+      return NBSD_SIGQUIT;
+
+    case GDB_SIGNAL_ILL:
+      return NBSD_SIGILL;
+
+    case GDB_SIGNAL_TRAP:
+      return NBSD_SIGTRAP;
+
+    case GDB_SIGNAL_ABRT:
+      return NBSD_SIGABRT;
+
+    case GDB_SIGNAL_EMT:
+      return NBSD_SIGEMT;
+
+    case GDB_SIGNAL_FPE:
+      return NBSD_SIGFPE;
+
+    case GDB_SIGNAL_KILL:
+      return NBSD_SIGKILL;
+
+    case GDB_SIGNAL_BUS:
+      return NBSD_SIGBUS;
+
+    case GDB_SIGNAL_SEGV:
+      return NBSD_SIGSEGV;
+
+    case GDB_SIGNAL_SYS:
+      return NBSD_SIGSYS;
+
+    case GDB_SIGNAL_PIPE:
+      return NBSD_SIGPIPE;
+
+    case GDB_SIGNAL_ALRM:
+      return NBSD_SIGALRM;
+
+    case GDB_SIGNAL_TERM:
+      return NBSD_SIGTERM;
+
+    case GDB_SIGNAL_URG:
+      return NBSD_SIGSTOP;
+
+    case GDB_SIGNAL_TSTP:
+      return NBSD_SIGTSTP;
+
+    case GDB_SIGNAL_CONT:
+      return NBSD_SIGCONT;
+
+    case GDB_SIGNAL_CHLD:
+      return NBSD_SIGCHLD;
+
+    case GDB_SIGNAL_TTIN:
+      return NBSD_SIGTTIN;
+
+    case GDB_SIGNAL_TTOU:
+      return NBSD_SIGTTOU;
+
+    case GDB_SIGNAL_IO:
+      return NBSD_SIGIO;
+
+    case GDB_SIGNAL_XCPU:
+      return NBSD_SIGXCPU;
+
+    case GDB_SIGNAL_XFSZ:
+      return NBSD_SIGXFSZ;
+
+    case GDB_SIGNAL_VTALRM:
+      return NBSD_SIGVTALRM;
+
+    case GDB_SIGNAL_PROF:
+      return NBSD_SIGPROF;
+
+    case GDB_SIGNAL_WINCH:
+      return NBSD_SIGWINCH;
+
+    case GDB_SIGNAL_INFO:
+      return NBSD_SIGINFO;
+
+    case GDB_SIGNAL_USR1:
+      return NBSD_SIGUSR1;
+
+    case GDB_SIGNAL_USR2:
+      return NBSD_SIGUSR2;
+
+    case GDB_SIGNAL_PWR:
+      return NBSD_SIGPWR;
+
+    /* GDB_SIGNAL_REALTIME_33 is not continuous in <gdb/signals.def>,
+       therefore we have to handle it here.  */
+    case GDB_SIGNAL_REALTIME_33:
+      return NBSD_SIGRTMIN;
+
+    /* Same comment applies to _64.  */
+    case GDB_SIGNAL_REALTIME_63:
+      return NBSD_SIGRTMAX;
+    }
+
+  if (signal >= GDB_SIGNAL_REALTIME_34
+      && signal <= GDB_SIGNAL_REALTIME_62)
+    {
+      int offset = signal - GDB_SIGNAL_REALTIME_32;
+
+      return NBSD_SIGRTMIN + 1 + offset;
+    }
+
+  return -1;
+}
+
+/* Shared library resolver handling.  */
+
+static CORE_ADDR
+nbsd_skip_solib_resolver (struct gdbarch *gdbarch, CORE_ADDR pc)
+{
+  struct bound_minimal_symbol msym;
+
+  msym = lookup_minimal_symbol ("_rtld_bind_start", NULL, NULL);
+  if (msym.minsym && BMSYMBOL_VALUE_ADDRESS (msym) == pc)
+    return frame_unwind_caller_pc (get_current_frame ());
+  else
+    return find_solib_trampoline_target (get_current_frame (), pc);
+}
+
+static struct gdbarch_data *nbsd_gdbarch_data_handle;
+
+struct nbsd_gdbarch_data
+{
+  struct type *siginfo_type;
+};
+
+static void *
+init_nbsd_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return GDBARCH_OBSTACK_ZALLOC (gdbarch, struct nbsd_gdbarch_data);
+}
+
+static struct nbsd_gdbarch_data *
+get_nbsd_gdbarch_data (struct gdbarch *gdbarch)
+{
+  return ((struct nbsd_gdbarch_data *)
+	  gdbarch_data (gdbarch, nbsd_gdbarch_data_handle));
+}
+
+/* Implement the "get_siginfo_type" gdbarch method.  */
+
+static struct type *
+nbsd_get_siginfo_type (struct gdbarch *gdbarch)
+{
+  nbsd_gdbarch_data *nbsd_gdbarch_data = get_nbsd_gdbarch_data (gdbarch);
+  if (nbsd_gdbarch_data->siginfo_type != NULL)
+    return nbsd_gdbarch_data->siginfo_type;
+
+  type *char_type = builtin_type (gdbarch)->builtin_char;
+  type *int_type = builtin_type (gdbarch)->builtin_int;
+  type *long_type = builtin_type (gdbarch)->builtin_long;
+
+  type *void_ptr_type
+    = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
+
+  type *int32_type = builtin_type (gdbarch)->builtin_int32;
+  type *uint32_type = builtin_type (gdbarch)->builtin_uint32;
+  type *uint64_type = builtin_type (gdbarch)->builtin_uint64;
+
+  bool lp64 = TYPE_LENGTH (void_ptr_type) == 8;
+  size_t char_bits = gdbarch_addressable_memory_unit_size (gdbarch) * 8;
+
+  /* pid_t */
+  type *pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+			      TYPE_LENGTH (int32_type) * char_bits, "pid_t");
+  TYPE_TARGET_TYPE (pid_type) = int32_type;
+
+  /* uid_t */
+  type *uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+			      TYPE_LENGTH (uint32_type) * char_bits, "uid_t");
+  TYPE_TARGET_TYPE (uid_type) = uint32_type;
+
+  /* clock_t */
+  type *clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+				TYPE_LENGTH (int_type) * char_bits, "clock_t");
+  TYPE_TARGET_TYPE (clock_type) = int_type;
+
+  /* lwpid_t */
+  type *lwpid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF,
+				TYPE_LENGTH (int32_type) * char_bits,
+				"lwpid_t");
+  TYPE_TARGET_TYPE (lwpid_type) = int32_type;
+
+  /* union sigval */
+  type *sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+  sigval_type->set_name (gdbarch_obstack_strdup (gdbarch, "sigval"));
+  append_composite_type_field (sigval_type, "sival_int", int_type);
+  append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
+
+  /* union _option */
+  type *option_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+  option_type->set_name (gdbarch_obstack_strdup (gdbarch, "_option"));
+  append_composite_type_field (option_type, "_pe_other_pid", pid_type);
+  append_composite_type_field (option_type, "_pe_lwp", lwpid_type);
+
+  /* union _reason */
+  type *reason_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+
+  /* _rt */
+  type *t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_pid", pid_type);
+  append_composite_type_field (t, "_uid", uid_type);
+  append_composite_type_field (t, "_value", sigval_type);
+  append_composite_type_field (reason_type, "_rt", t);
+
+  /* _child */
+  t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_pid", pid_type);
+  append_composite_type_field (t, "_uid", uid_type);
+  append_composite_type_field (t, "_status", int_type);
+  append_composite_type_field (t, "_utime", clock_type);
+  append_composite_type_field (t, "_stime", clock_type);
+  append_composite_type_field (reason_type, "_child", t);
+
+  /* _fault */
+  t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_addr", void_ptr_type);
+  append_composite_type_field (t, "_trap", int_type);
+  append_composite_type_field (t, "_trap2", int_type);
+  append_composite_type_field (t, "_trap3", int_type);
+  append_composite_type_field (reason_type, "_fault", t);
+
+  /* _poll */
+  t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_band", long_type);
+  append_composite_type_field (t, "_fd", int_type);
+  append_composite_type_field (reason_type, "_poll", t);
+
+  /* _syscall */
+  t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_sysnum", int_type);
+  append_composite_type_field (t, "_retval",
+			       init_vector_type (int_type, 2));
+  append_composite_type_field (t, "_error", int_type);
+  append_composite_type_field (t, "_args",
+			       init_vector_type (uint64_type, 8));
+  append_composite_type_field (reason_type, "_syscall", t);
+
+  /* _ptrace_state */
+  t = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  append_composite_type_field (t, "_pe_report_event", int_type);
+  append_composite_type_field (t, "_option", option_type);
+  append_composite_type_field (reason_type, "_ptrace_state", t);
+
+  /* struct _ksiginfo */
+  type *ksiginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
+  ksiginfo_type->set_name (gdbarch_obstack_strdup (gdbarch, "_ksiginfo"));
+  append_composite_type_field (ksiginfo_type, "_signo", int_type);
+  append_composite_type_field (ksiginfo_type, "_code", int_type);
+  append_composite_type_field (ksiginfo_type, "_errno", int_type);
+  if (lp64)
+    append_composite_type_field (ksiginfo_type, "_pad", int_type);
+  append_composite_type_field (ksiginfo_type, "_reason", reason_type);
+
+  /* union siginfo */
+  type *siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
+  siginfo_type->set_name (gdbarch_obstack_strdup (gdbarch, "siginfo"));
+  append_composite_type_field (siginfo_type, "si_pad",
+			       init_vector_type (char_type, 128));
+  append_composite_type_field (siginfo_type, "_info", ksiginfo_type);
+
+  nbsd_gdbarch_data->siginfo_type = siginfo_type;
+
+  return siginfo_type;
+}
+
+/* See nbsd-tdep.h.  */
+
+void
+nbsd_info_proc_mappings_header (int addr_bit)
+{
+  printf_filtered (_("Mapped address spaces:\n\n"));
+  if (addr_bit == 64)
+    {
+      printf_filtered ("  %18s %18s %10s %10s %9s %s\n",
+		       "Start Addr",
+		       "  End Addr",
+		       "      Size", "    Offset", "Flags  ", "File");
+    }
+  else
+    {
+      printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
+		       "Start Addr",
+		       "  End Addr",
+		       "      Size", "    Offset", "Flags  ", "File");
+    }
+}
+
+/* Helper function to generate mappings flags for a single VM map
+   entry in 'info proc mappings'.  */
+
+static const char *
+nbsd_vm_map_entry_flags (int kve_flags, int kve_protection)
+{
+  static char vm_flags[9];
+
+  vm_flags[0] = (kve_protection & KINFO_VME_PROT_READ) ? 'r' : '-';
+  vm_flags[1] = (kve_protection & KINFO_VME_PROT_WRITE) ? 'w' : '-';
+  vm_flags[2] = (kve_protection & KINFO_VME_PROT_EXEC) ? 'x' : '-';
+  vm_flags[3] = ' ';
+  vm_flags[4] = (kve_flags & KINFO_VME_FLAG_COW) ? 'C' : '-';
+  vm_flags[5] = (kve_flags & KINFO_VME_FLAG_NEEDS_COPY) ? 'N' : '-';
+  vm_flags[6] = (kve_flags & KINFO_VME_FLAG_PAGEABLE) ? 'P' : '-';
+  vm_flags[7] = (kve_flags & KINFO_VME_FLAG_GROWS_UP) ? 'U'
+    : (kve_flags & KINFO_VME_FLAG_GROWS_DOWN) ? 'D' : '-';
+  vm_flags[8] = '\0';
+
+  return vm_flags;
+}
+
+void
+nbsd_info_proc_mappings_entry (int addr_bit, ULONGEST kve_start,
+			       ULONGEST kve_end, ULONGEST kve_offset,
+			       int kve_flags, int kve_protection,
+			       const char *kve_path)
+{
+  if (addr_bit == 64)
+    {
+      printf_filtered ("  %18s %18s %10s %10s %9s %s\n",
+		       hex_string (kve_start),
+		       hex_string (kve_end),
+		       hex_string (kve_end - kve_start),
+		       hex_string (kve_offset),
+		       nbsd_vm_map_entry_flags (kve_flags, kve_protection),
+		       kve_path);
+    }
+  else
+    {
+      printf_filtered ("\t%10s %10s %10s %10s %9s %s\n",
+		       hex_string (kve_start),
+		       hex_string (kve_end),
+		       hex_string (kve_end - kve_start),
+		       hex_string (kve_offset),
+		       nbsd_vm_map_entry_flags (kve_flags, kve_protection),
+		       kve_path);
+    }
+}
+
+/* Implement the "get_syscall_number" gdbarch method.  */
+
+static LONGEST
+nbsd_get_syscall_number (struct gdbarch *gdbarch, thread_info *thread)
+{
+
+  /* NetBSD doesn't use gdbarch_get_syscall_number since NetBSD
+     native targets fetch the system call number from the
+     'si_sysnum' member of siginfo_t in nbsd_nat_target::wait.
+     However, system call catching requires this function to be
+     set.  */
+
+  internal_error (__FILE__, __LINE__, _("nbsd_get_sycall_number called"));
+}
+
+/* See nbsd-tdep.h.  */
+
+void
+nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  set_gdbarch_gdb_signal_from_target (gdbarch, nbsd_gdb_signal_from_target);
+  set_gdbarch_gdb_signal_to_target (gdbarch, nbsd_gdb_signal_to_target);
+  set_gdbarch_skip_solib_resolver (gdbarch, nbsd_skip_solib_resolver);
+  set_gdbarch_auxv_parse (gdbarch, svr4_auxv_parse);
+  set_gdbarch_get_siginfo_type (gdbarch, nbsd_get_siginfo_type);
+
+  /* `catch syscall' */
+  set_xml_syscall_file_name (gdbarch, "syscalls/netbsd.xml");
+  set_gdbarch_get_syscall_number (gdbarch, nbsd_get_syscall_number);
+}
+
+void _initialize_nbsd_tdep ();
+void
+_initialize_nbsd_tdep ()
+{
+  nbsd_gdbarch_data_handle
+    = gdbarch_data_register_post_init (init_nbsd_gdbarch_data);
+}