1 /* Native-dependent code for GNU/Linux on MIPS processors. 2 3 Copyright 2001, 2002, 2003 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 #include "mips-tdep.h" 24 25 /* Pseudo registers can not be read. ptrace does not provide a way to 26 read (or set) PS_REGNUM, and there's no point in reading or setting 27 ZERO_REGNUM. We also can not set BADVADDR, CAUSE, or FCRIR via 28 ptrace(). */ 29 30 int 31 mips_linux_cannot_fetch_register (int regno) 32 { 33 if (regno > ZERO_REGNUM && regno < ZERO_REGNUM + 32) 34 return 0; 35 else if (regno >= mips_regnum (current_gdbarch)->fp0 36 && regno <= mips_regnum (current_gdbarch)->fp0 + 32) 37 return 0; 38 else if (regno == mips_regnum (current_gdbarch)->lo 39 || regno == mips_regnum (current_gdbarch)->hi 40 || regno == mips_regnum (current_gdbarch)->badvaddr 41 || regno == mips_regnum (current_gdbarch)->cause 42 || regno == mips_regnum (current_gdbarch)->pc 43 || regno == mips_regnum (current_gdbarch)->fp_control_status 44 || regno == mips_regnum (current_gdbarch)->fp_implementation_revision) 45 return 0; 46 else 47 return 1; 48 } 49 50 int 51 mips_linux_cannot_store_register (int regno) 52 { 53 if (regno > ZERO_REGNUM && regno < ZERO_REGNUM + 32) 54 return 0; 55 else if (regno >= FP0_REGNUM && regno <= FP0_REGNUM + 32) 56 return 0; 57 else if (regno == mips_regnum (current_gdbarch)->lo 58 || regno == mips_regnum (current_gdbarch)->hi 59 || regno == mips_regnum (current_gdbarch)->pc 60 || regno == mips_regnum (current_gdbarch)->fp_control_status) 61 return 0; 62 else 63 return 1; 64 } 65