1/* Native-dependent code for OpenBSD/amd64.
2
3   Copyright 2003, 2004 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 2 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, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330,
20   Boston, MA 02111-1307, USA.  */
21
22#include "defs.h"
23
24#include "gdb_assert.h"
25
26#include "amd64-tdep.h"
27#include "amd64-nat.h"
28
29/* Mapping between the general-purpose registers in OpenBSD/amd64
30   `struct reg' format and GDB's register cache layout for
31   OpenBSD/i386.
32
33   Note that most (if not all) OpenBSD/amd64 registers are 64-bit,
34   while the OpenBSD/i386 registers are all 32-bit, but since we're
35   little-endian we get away with that.  */
36
37/* From <machine/reg.h>.  */
38static int amd64obsd32_r_reg_offset[] =
39{
40  14 * 8,			/* %eax */
41  3 * 8,			/* %ecx */
42  2 * 8,			/* %edx */
43  13 * 8,			/* %ebx */
44  15 * 8,			/* %esp */
45  12 * 8,			/* %ebp */
46  1 * 8,			/* %esi */
47  0 * 8,			/* %edi */
48  16 * 8,			/* %eip */
49  17 * 8,			/* %eflags */
50  18 * 8,			/* %cs */
51  19 * 8,			/* %ss */
52  20 * 8,			/* %ds */
53  21 * 8,			/* %es */
54  22 * 8,			/* %fs */
55  23 * 8			/* %gs */
56};
57
58
59/* Provide a prototype to silence -Wmissing-prototypes.  */
60void _initialize_amd64obsd_nat (void);
61
62void
63_initialize_amd64obsd_nat (void)
64{
65  amd64_native_gregset32_reg_offset = amd64obsd32_r_reg_offset;
66  amd64_native_gregset32_num_regs = ARRAY_SIZE (amd64obsd32_r_reg_offset);
67  amd64_native_gregset64_reg_offset = amd64obsd_r_reg_offset;
68}
69