1/* Native-dependent code for AMD64 BSD's.
2
3   Copyright (C) 2003, 2004, 2007 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 "inferior.h"
22#include "regcache.h"
23#include "target.h"
24
25/* We include <signal.h> to make sure `struct fxsave64' is defined on
26   NetBSD, since NetBSD's <machine/reg.h> needs it.  */
27#include "gdb_assert.h"
28#include <signal.h>
29#include <sys/types.h>
30#include <sys/ptrace.h>
31#include <machine/reg.h>
32
33#include "amd64-tdep.h"
34#include "amd64-nat.h"
35#include "inf-ptrace.h"
36
37
38/* Fetch register REGNUM from the inferior.  If REGNUM is -1, do this
39   for all registers (including the floating-point registers).  */
40
41static void
42amd64bsd_fetch_inferior_registers (struct regcache *regcache, int regnum)
43{
44  if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
45    {
46      struct reg regs;
47
48      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
49		  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
50	perror_with_name (_("Couldn't get registers"));
51
52      amd64_supply_native_gregset (regcache, &regs, -1);
53      if (regnum != -1)
54	return;
55    }
56
57  if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum))
58    {
59      struct fpreg fpregs;
60
61      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
62		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
63	perror_with_name (_("Couldn't get floating point status"));
64
65      amd64_supply_fxsave (regcache, -1, &fpregs);
66    }
67}
68
69/* Store register REGNUM back into the inferior.  If REGNUM is -1, do
70   this for all registers (including the floating-point registers).  */
71
72static void
73amd64bsd_store_inferior_registers (struct regcache *regcache, int regnum)
74{
75  if (regnum == -1 || amd64_native_gregset_supplies_p (regnum))
76    {
77      struct reg regs;
78
79      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
80                  (PTRACE_TYPE_ARG3) &regs, 0) == -1)
81        perror_with_name (_("Couldn't get registers"));
82
83      amd64_collect_native_gregset (regcache, &regs, regnum);
84
85      if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
86	          (PTRACE_TYPE_ARG3) &regs, 0) == -1)
87        perror_with_name (_("Couldn't write registers"));
88
89      if (regnum != -1)
90	return;
91    }
92
93  if (regnum == -1 || !amd64_native_gregset_supplies_p (regnum))
94    {
95      struct fpreg fpregs;
96
97      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
98		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
99	perror_with_name (_("Couldn't get floating point status"));
100
101      amd64_collect_fxsave (regcache, regnum, &fpregs);
102
103      if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
104		  (PTRACE_TYPE_ARG3) &fpregs, 0) == -1)
105	perror_with_name (_("Couldn't write floating point status"));
106    }
107}
108
109/* Create a prototype *BSD/amd64 target.  The client can override it
110   with local methods.  */
111
112struct target_ops *
113amd64bsd_target (void)
114{
115  struct target_ops *t;
116
117  t = inf_ptrace_target ();
118  t->to_fetch_registers = amd64bsd_fetch_inferior_registers;
119  t->to_store_registers = amd64bsd_store_inferior_registers;
120  return t;
121}
122