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, 432 insertions, 0 deletions

diff --git a/gdb/i386-netbsd-tdep.c b/gdb/i386-netbsd-tdep.c
new file mode 100644
index 0000000..905c4ff
--- /dev/null
+++ b/gdb/i386-netbsd-tdep.c
@@ -0,0 +1,432 @@
+/* Target-dependent code for NetBSD/i386.
+
+   Copyright (C) 1988-2020 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 "arch-utils.h"
+#include "frame.h"
+#include "gdbcore.h"
+#include "regcache.h"
+#include "regset.h"
+#include "osabi.h"
+#include "symtab.h"
+#include "trad-frame.h"
+#include "tramp-frame.h"
+
+#include "i386-tdep.h"
+#include "i387-tdep.h"
+#include "netbsd-tdep.h"
+#include "solib-svr4.h"
+
+/* From <machine/reg.h>.  */
+static int i386nbsd_r_reg_offset[] =
+{
+  0 * 4,			/* %eax */
+  1 * 4,			/* %ecx */
+  2 * 4,			/* %edx */
+  3 * 4,			/* %ebx */
+  4 * 4,			/* %esp */
+  5 * 4,			/* %ebp */
+  6 * 4,			/* %esi */
+  7 * 4,			/* %edi */
+  8 * 4,			/* %eip */
+  9 * 4,			/* %eflags */
+  10 * 4,			/* %cs */
+  11 * 4,			/* %ss */
+  12 * 4,			/* %ds */
+  13 * 4,			/* %es */
+  14 * 4,			/* %fs */
+  15 * 4			/* %gs */
+};
+
+/* From <machine/signal.h>.  */
+static int i386nbsd_sc_reg_offset[] =
+{
+  10 * 4,			/* %eax */
+  9 * 4,			/* %ecx */
+  8 * 4,			/* %edx */
+  7 * 4,			/* %ebx */
+  14 * 4,			/* %esp */
+  6 * 4,			/* %ebp */
+  5 * 4,			/* %esi */
+  4 * 4,			/* %edi */
+  11 * 4,			/* %eip */
+  13 * 4,			/* %eflags */
+  12 * 4,			/* %cs */
+  15 * 4,			/* %ss */
+  3 * 4,			/* %ds */
+  2 * 4,			/* %es */
+  1 * 4,			/* %fs */
+  0 * 4				/* %gs */
+};
+
+/* From <machine/mcontext.h>.  */
+int i386nbsd_mc_reg_offset[] =
+{
+  11 * 4,			/* %eax */
+  10 * 4,			/* %ecx */
+  9 * 4,			/* %edx */
+  8 * 4,			/* %ebx */
+  7 * 4,			/* %esp */
+  6 * 4,			/* %ebp */
+  5 * 4,			/* %esi */
+  4 * 4,			/* %edi */
+  14 * 4,			/* %eip */
+  16 * 4,			/* %eflags */
+  15 * 4,			/* %cs */
+  18 * 4,			/* %ss */
+  3 * 4,			/* %ds */
+  2 * 4,			/* %es */
+  1 * 4,			/* %fs */
+  0 * 4				/* %gs */
+};
+
+static void i386nbsd_sigtramp_cache_init (const struct tramp_frame *,
+					  struct frame_info *,
+					  struct trad_frame_cache *,
+					  CORE_ADDR);
+
+static const struct tramp_frame i386nbsd_sigtramp_sc16 =
+{
+  SIGTRAMP_FRAME,
+  1,
+  {
+   /* leal  0x10(%esp), %eax */
+   { 0x8d, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x10, ULONGEST_MAX },
+
+   /* pushl %eax */
+   { 0x50, ULONGEST_MAX },
+
+   /* pushl %eax */
+   { 0x50, ULONGEST_MAX },
+
+   /* movl  $0x127, %eax		# __sigreturn14 */
+   { 0xb8, ULONGEST_MAX },
+   { 0x27, ULONGEST_MAX },
+   {0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+
+   /* movl  $0x1, %eax		# exit */
+   { 0xb8, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+
+   { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
+  },
+  i386nbsd_sigtramp_cache_init
+};
+
+static const struct tramp_frame i386nbsd_sigtramp_sc2 =
+{
+  SIGTRAMP_FRAME,
+  1,
+  {
+   /* leal  0x0c(%esp), %eax */
+   { 0x8d, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x0c, ULONGEST_MAX },
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x127, %eax		# __sigreturn14 */
+   { 0xb8, ULONGEST_MAX },
+   { 0x27, ULONGEST_MAX },
+   {0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x1, %eax */
+   { 0xb8, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
+  },
+  i386nbsd_sigtramp_cache_init
+};
+
+static const struct tramp_frame i386nbsd_sigtramp_si2 =
+{
+  SIGTRAMP_FRAME,
+  1,
+  {
+   /* movl  8(%esp),%eax */
+   { 0x8b, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x08, ULONGEST_MAX },
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x134, %eax            # setcontext */
+   { 0xb8, ULONGEST_MAX },
+   { 0x34, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX },
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x1, %eax */
+   { 0xb8, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX },
+   { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
+  },
+  i386nbsd_sigtramp_cache_init
+};
+
+static const struct tramp_frame i386nbsd_sigtramp_si31 =
+{
+  SIGTRAMP_FRAME,
+  1,
+  {
+   /* leal  0x8c(%esp), %eax */
+   { 0x8d, ULONGEST_MAX },
+   { 0x84, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x8c, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x134, %eax            # setcontext */
+   { 0xb8, ULONGEST_MAX },
+   { 0x34, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x1, %eax */
+   { 0xb8, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
+  },
+  i386nbsd_sigtramp_cache_init
+};
+
+static const struct tramp_frame i386nbsd_sigtramp_si4 =
+{
+  SIGTRAMP_FRAME,
+  1,
+  {
+   /* leal  0x8c(%esp), %eax */
+   { 0x8d, ULONGEST_MAX },
+   { 0x84, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x8c, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* movl  %eax, 0x4(%esp) */
+   { 0x89, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   /* movl  $0x134, %eax            # setcontext */
+   { 0xb8, ULONGEST_MAX },
+   { 0x34, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   { 0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   /* movl   $0xffffffff,0x4(%esp) */
+   { 0xc7, ULONGEST_MAX },
+   { 0x44, ULONGEST_MAX },
+   { 0x24, ULONGEST_MAX },
+   { 0x04, ULONGEST_MAX },
+   { 0xff, ULONGEST_MAX },
+   { 0xff, ULONGEST_MAX },
+   { 0xff, ULONGEST_MAX },
+   { 0xff, ULONGEST_MAX },
+   /* movl  $0x1, %eax */
+   { 0xb8, ULONGEST_MAX },
+   { 0x01, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   {0x00, ULONGEST_MAX },
+   /* int   $0x80 */
+   { 0xcd, ULONGEST_MAX },
+   { 0x80, ULONGEST_MAX},
+   { TRAMP_SENTINEL_INSN, ULONGEST_MAX }
+  },
+  i386nbsd_sigtramp_cache_init
+};
+
+static void
+i386nbsd_sigtramp_cache_init (const struct tramp_frame *self,
+			      struct frame_info *this_frame,
+			      struct trad_frame_cache *this_cache,
+			      CORE_ADDR func)
+{
+  struct gdbarch *gdbarch = get_frame_arch (this_frame);
+  enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
+  CORE_ADDR sp = get_frame_register_unsigned (this_frame, I386_ESP_REGNUM);
+  CORE_ADDR base;
+  int *reg_offset;
+  int num_regs;
+  int i;
+
+  if (self == &i386nbsd_sigtramp_sc16 || self == &i386nbsd_sigtramp_sc2)
+    {
+      reg_offset = i386nbsd_sc_reg_offset;
+      num_regs = ARRAY_SIZE (i386nbsd_sc_reg_offset);
+
+      /* Read in the sigcontext address.  */
+      base = read_memory_unsigned_integer (sp + 8, 4, byte_order);
+    }
+  else
+    {
+      reg_offset = i386nbsd_mc_reg_offset;
+      num_regs = ARRAY_SIZE (i386nbsd_mc_reg_offset);
+
+      /* Read in the ucontext address.  */
+      base = read_memory_unsigned_integer (sp + 8, 4, byte_order);
+      /* offsetof(ucontext_t, uc_mcontext) == 36 */
+      base += 36;
+    }
+
+  for (i = 0; i < num_regs; i++)
+    if (reg_offset[i] != -1)
+      trad_frame_set_reg_addr (this_cache, i, base + reg_offset[i]);
+
+  /* Construct the frame ID using the function start.  */
+  trad_frame_set_id (this_cache, frame_id_build (sp, func));
+}
+
+
+static void 
+i386nbsd_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  /* Obviously NetBSD is BSD-based.  */
+  i386bsd_init_abi (info, gdbarch);
+
+  nbsd_init_abi (info, gdbarch);
+
+  /* NetBSD has a different `struct reg'.  */
+  tdep->gregset_reg_offset = i386nbsd_r_reg_offset;
+  tdep->gregset_num_regs = ARRAY_SIZE (i386nbsd_r_reg_offset);
+  tdep->sizeof_gregset = 16 * 4;
+
+  /* NetBSD uses -freg-struct-return by default.  */
+  tdep->struct_return = reg_struct_return;
+
+  /* NetBSD uses tramp_frame sniffers for signal trampolines.  */
+  tdep->sigcontext_addr= 0;
+  tdep->sigtramp_start = 0;
+  tdep->sigtramp_end = 0;
+  tdep->sigtramp_p = 0;
+  tdep->sc_reg_offset = 0;
+  tdep->sc_num_regs = 0;
+
+  tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_sc16);
+  tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_sc2);
+  tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si2);
+  tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si31);
+  tramp_frame_prepend_unwinder (gdbarch, &i386nbsd_sigtramp_si4);
+}
+
+/* NetBSD ELF.  */
+
+static void
+i386nbsdelf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
+{
+  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+
+  /* It's still NetBSD.  */
+  i386nbsd_init_abi (info, gdbarch);
+
+  /* But ELF-based.  */
+  i386_elf_init_abi (info, gdbarch);
+
+  /* NetBSD ELF uses SVR4-style shared libraries.  */
+  set_solib_svr4_fetch_link_map_offsets
+    (gdbarch, svr4_ilp32_fetch_link_map_offsets);
+
+  /* NetBSD ELF uses -fpcc-struct-return by default.  */
+  tdep->struct_return = pcc_struct_return;
+}
+
+void _initialize_i386nbsd_tdep ();
+void
+_initialize_i386nbsd_tdep ()
+{
+  gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_NETBSD,
+			  i386nbsdelf_init_abi);
+}