gdb/amd64-netbsd-nat.c

   1 /* Native-dependent code for NetBSD/amd64.
   2
   3    Copyright (C) 2003-2022 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #include "defs.h"
  21 #include "target.h"
  22
  23 #include "netbsd-nat.h"
  24 #include "amd64-tdep.h"
  25 #include "amd64-bsd-nat.h"
  26 #include "amd64-nat.h"
  27
  28 /* Mapping between the general-purpose registers in NetBSD/amd64
  29    `struct reg' format and GDB's register cache layout for
  30    NetBSD/i386.
  31
  32    Note that most (if not all) NetBSD/amd64 registers are 64-bit,
  33    while the NetBSD/i386 registers are all 32-bit, but since we're
  34    little-endian we get away with that.  */
  35
  36 /* From <machine/reg.h>.  */
  37 static int amd64nbsd32_r_reg_offset[] =
  38 {
  39   14 * 8,                       /* %eax */
  40   3 * 8,                        /* %ecx */
  41   2 * 8,                        /* %edx */
  42   13 * 8,                       /* %ebx */
  43   24 * 8,                       /* %esp */
  44   12 * 8,                       /* %ebp */
  45   1 * 8,                        /* %esi */
  46   0 * 8,                        /* %edi */
  47   21 * 8,                       /* %eip */
  48   23 * 8,                       /* %eflags */
  49   22 * 8,                       /* %cs */
  50   25 * 8,                       /* %ss */
  51   18 * 8,                       /* %ds */
  52   17 * 8,                       /* %es */
  53   16 * 8,                       /* %fs */
  54   15 * 8                        /* %gs */
  55 };
  56
  57 static amd64_bsd_nat_target<nbsd_nat_target> the_amd64_nbsd_nat_target;
  58
  59 void _initialize_amd64nbsd_nat ();
  60 void
  61 _initialize_amd64nbsd_nat ()
  62 {
  63   amd64_native_gregset32_reg_offset = amd64nbsd32_r_reg_offset;
  64   amd64_native_gregset32_num_regs = ARRAY_SIZE (amd64nbsd32_r_reg_offset);
  65   amd64_native_gregset64_reg_offset = amd64nbsd_r_reg_offset;
  66
  67   add_inf_child_target (&the_amd64_nbsd_nat_target);
  68 }