1*b725ae77Skettenis /* Native-dependent code for GNU/Linux on MIPS processors.
2*b725ae77Skettenis
3*b725ae77Skettenis Copyright 2001, 2002, 2003 Free Software Foundation, Inc.
4*b725ae77Skettenis
5*b725ae77Skettenis This file is part of GDB.
6*b725ae77Skettenis
7*b725ae77Skettenis This program is free software; you can redistribute it and/or modify
8*b725ae77Skettenis it under the terms of the GNU General Public License as published by
9*b725ae77Skettenis the Free Software Foundation; either version 2 of the License, or
10*b725ae77Skettenis (at your option) any later version.
11*b725ae77Skettenis
12*b725ae77Skettenis This program is distributed in the hope that it will be useful,
13*b725ae77Skettenis but WITHOUT ANY WARRANTY; without even the implied warranty of
14*b725ae77Skettenis MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15*b725ae77Skettenis GNU General Public License for more details.
16*b725ae77Skettenis
17*b725ae77Skettenis You should have received a copy of the GNU General Public License
18*b725ae77Skettenis along with this program; if not, write to the Free Software
19*b725ae77Skettenis Foundation, Inc., 59 Temple Place - Suite 330,
20*b725ae77Skettenis Boston, MA 02111-1307, USA. */
21*b725ae77Skettenis
22*b725ae77Skettenis #include "defs.h"
23*b725ae77Skettenis #include "mips-tdep.h"
24*b725ae77Skettenis
25*b725ae77Skettenis /* Pseudo registers can not be read. ptrace does not provide a way to
26*b725ae77Skettenis read (or set) PS_REGNUM, and there's no point in reading or setting
27*b725ae77Skettenis ZERO_REGNUM. We also can not set BADVADDR, CAUSE, or FCRIR via
28*b725ae77Skettenis ptrace(). */
29*b725ae77Skettenis
30*b725ae77Skettenis int
mips_linux_cannot_fetch_register(int regno)31*b725ae77Skettenis mips_linux_cannot_fetch_register (int regno)
32*b725ae77Skettenis {
33*b725ae77Skettenis if (regno > ZERO_REGNUM && regno < ZERO_REGNUM + 32)
34*b725ae77Skettenis return 0;
35*b725ae77Skettenis else if (regno >= mips_regnum (current_gdbarch)->fp0
36*b725ae77Skettenis && regno <= mips_regnum (current_gdbarch)->fp0 + 32)
37*b725ae77Skettenis return 0;
38*b725ae77Skettenis else if (regno == mips_regnum (current_gdbarch)->lo
39*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->hi
40*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->badvaddr
41*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->cause
42*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->pc
43*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->fp_control_status
44*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->fp_implementation_revision)
45*b725ae77Skettenis return 0;
46*b725ae77Skettenis else
47*b725ae77Skettenis return 1;
48*b725ae77Skettenis }
49*b725ae77Skettenis
50*b725ae77Skettenis int
mips_linux_cannot_store_register(int regno)51*b725ae77Skettenis mips_linux_cannot_store_register (int regno)
52*b725ae77Skettenis {
53*b725ae77Skettenis if (regno > ZERO_REGNUM && regno < ZERO_REGNUM + 32)
54*b725ae77Skettenis return 0;
55*b725ae77Skettenis else if (regno >= FP0_REGNUM && regno <= FP0_REGNUM + 32)
56*b725ae77Skettenis return 0;
57*b725ae77Skettenis else if (regno == mips_regnum (current_gdbarch)->lo
58*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->hi
59*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->pc
60*b725ae77Skettenis || regno == mips_regnum (current_gdbarch)->fp_control_status)
61*b725ae77Skettenis return 0;
62*b725ae77Skettenis else
63*b725ae77Skettenis return 1;
64*b725ae77Skettenis }
65