1/* Native-dependent code for MIPS systems running NetBSD.
2   Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
3
4   This file is part of GDB.
5
6   This program is free software; you can redistribute it and/or modify
7   it under the terms of the GNU General Public License as published by
8   the Free Software Foundation; either version 2 of the License, or
9   (at your option) any later version.
10
11   This program is distributed in the hope that it will be useful,
12   but WITHOUT ANY WARRANTY; without even the implied warranty of
13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   GNU General Public License for more details.
15
16   You should have received a copy of the GNU General Public License
17   along with this program; if not, write to the Free Software
18   Foundation, Inc., 59 Temple Place - Suite 330,
19   Boston, MA 02111-1307, USA.  */
20
21#include "defs.h"
22#include "inferior.h"
23#include "regcache.h"
24
25#include "mipsnbsd-tdep.h"
26
27#include <sys/types.h>
28#include <sys/ptrace.h>
29#include <machine/reg.h>
30
31/* Determine if PT_GETREGS fetches this register.  */
32static int
33getregs_supplies (int regno)
34{
35  return ((regno) >= ZERO_REGNUM && (regno) <= PC_REGNUM);
36}
37
38void
39fetch_inferior_registers (int regno)
40{
41  if (regno == -1 || getregs_supplies (regno))
42    {
43      struct reg regs;
44
45      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
46		  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
47	perror_with_name ("Couldn't get registers");
48
49      mipsnbsd_supply_reg ((char *) &regs, regno);
50      if (regno != -1)
51	return;
52    }
53
54  if (regno == -1 || regno >= FP0_REGNUM)
55    {
56      struct fpreg fpregs;
57
58      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
59		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
60	perror_with_name ("Couldn't get floating point status");
61
62      mipsnbsd_supply_fpreg ((char *) &fpregs, regno);
63    }
64}
65
66void
67store_inferior_registers (int regno)
68{
69  if (regno == -1 || getregs_supplies (regno))
70    {
71      struct reg regs;
72
73      if (ptrace (PT_GETREGS, PIDGET (inferior_ptid),
74		  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
75	perror_with_name ("Couldn't get registers");
76
77      mipsnbsd_fill_reg ((char *) &regs, regno);
78
79      if (ptrace (PT_SETREGS, PIDGET (inferior_ptid),
80		  (PTRACE_ARG3_TYPE) &regs, 0) == -1)
81	perror_with_name ("Couldn't write registers");
82
83      if (regno != -1)
84	return;
85    }
86
87  if (regno == -1 || regno >= FP0_REGNUM)
88    {
89      struct fpreg fpregs;
90
91      if (ptrace (PT_GETFPREGS, PIDGET (inferior_ptid),
92		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
93	perror_with_name ("Couldn't get floating point status");
94
95      mipsnbsd_fill_fpreg ((char *) &fpregs, regno);
96
97      if (ptrace (PT_SETFPREGS, PIDGET (inferior_ptid),
98		  (PTRACE_ARG3_TYPE) &fpregs, 0) == -1)
99	perror_with_name ("Couldn't write floating point status");
100    }
101}
102