gdb/amd64nbsd-nat.c

   1 /* Native-dependent code for NetBSD/amd64.
   2
   3    Copyright (C) 2003, 2004, 2007, 2008, 2009 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 "gdb_assert.h"
  24
  25 #include "nbsd-nat.h"
  26 #include "amd64-tdep.h"
  27 #include "amd64-nat.h"
  28
  29 /* Mapping between the general-purpose registers in NetBSD/amd64
  30    `struct reg' format and GDB's register cache layout for
  31    NetBSD/i386.
  32
  33    Note that most (if not all) NetBSD/amd64 registers are 64-bit,
  34    while the NetBSD/i386 registers are all 32-bit, but since we're
  35    little-endian we get away with that.  */
  36
  37 /* From <machine/reg.h>.  */
  38 static int amd64nbsd32_r_reg_offset[] =
  39 {
  40   14 * 8,                       /* %eax */
  41   3 * 8,                        /* %ecx */
  42   2 * 8,                        /* %edx */
  43   13 * 8,                       /* %ebx */
  44   24 * 8,                       /* %esp */
  45   12 * 8,                       /* %ebp */
  46   1 * 8,                        /* %esi */
  47   0 * 8,                        /* %edi */
  48   21 * 8,                       /* %eip */
  49   23 * 8,                       /* %eflags */
  50   22 * 8,                       /* %cs */
  51   25 * 8,                       /* %ss */
  52   18 * 8,                       /* %ds */
  53   17 * 8,                       /* %es */
  54   16 * 8,                       /* %fs */
  55   15 * 8                        /* %gs */
  56 };
  57 \f
  58
  59 /* Provide a prototype to silence -Wmissing-prototypes.  */
  60 void _initialize_amd64nbsd_nat (void);
  61
  62 void
  63 _initialize_amd64nbsd_nat (void)
  64 {
  65   struct target_ops *t;
  66
  67   amd64_native_gregset32_reg_offset = amd64nbsd32_r_reg_offset;
  68   amd64_native_gregset32_num_regs = ARRAY_SIZE (amd64nbsd32_r_reg_offset);
  69   amd64_native_gregset64_reg_offset = amd64nbsd_r_reg_offset;
  70
  71   /* Add some extra features to the common *BSD/amd64 target.  */
  72   t = amd64bsd_target ();
  73   t->to_pid_to_exec_file = nbsd_pid_to_exec_file;
  74   add_target (t);
  75 }