gdb/mips-linux-nat.c

   1 /* Native-dependent code for GNU/Linux on MIPS processors.
   2    Copyright 2001 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
  23 /* Pseudo registers can not be read.  ptrace does not provide a way to
  24    read (or set) PS_REGNUM, and there's no point in reading or setting
  25    ZERO_REGNUM.  We also can not set BADVADDR, CAUSE, or FCRIR via
  26    ptrace().  */
  27
  28 int
  29 mips_linux_cannot_fetch_register (int regno)
  30 {
  31   if (regno >= FP_REGNUM)
  32     return 1;
  33   else if (regno == PS_REGNUM)
  34     return 1;
  35   else if (regno == ZERO_REGNUM)
  36     return 1;
  37   else
  38     return 0;
  39 }
  40
  41 int
  42 mips_linux_cannot_store_register (int regno)
  43 {
  44   if (regno >= FP_REGNUM)
  45     return 1;
  46   else if (regno == PS_REGNUM)
  47     return 1;
  48   else if (regno == ZERO_REGNUM)
  49     return 1;
  50   else if (regno == BADVADDR_REGNUM)
  51     return 1;
  52   else if (regno == CAUSE_REGNUM)
  53     return 1;
  54   else if (regno == FCRIR_REGNUM)
  55     return 1;
  56   else
  57     return 0;
  58 }