gdb/config/mips/tm-irix5.h

   1 /* Target machine description for SGI Iris under Irix 5, for GDB.
   2    Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1998, 2000
   3    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 "mips/tm-irix3.h"
  23
  24 /* FIXME: cagney/2000-04-04: Testing the _MIPS_SIM_NABI32 and
  25    _MIPS_SIM in a tm-*.h file is simply wrong!  Those are
  26    host-dependant macros (provided by /usr/include) and stop any
  27    chance of the target being cross compiled */
  28 #if defined (_MIPS_SIM_NABI32) && _MIPS_SIM == _MIPS_SIM_NABI32
  29 /*
  30  * Irix 6 (n32 ABI) has 32-bit GP regs and 64-bit FP regs
  31  */
  32
  33 #undef  REGISTER_BYTE
  34 #define REGISTER_BYTE(N) \
  35      (((N) < FP0_REGNUM) ? (N) * MIPS_REGSIZE : \
  36       ((N) < FP0_REGNUM + 32) ?     \
  37       FP0_REGNUM * MIPS_REGSIZE + \
  38       ((N) - FP0_REGNUM) * sizeof(double) : \
  39       32 * sizeof(double) + ((N) - 32) * MIPS_REGSIZE)
  40
  41 #undef  REGISTER_VIRTUAL_TYPE
  42 #define REGISTER_VIRTUAL_TYPE(N) \
  43         (((N) >= FP0_REGNUM && (N) < FP0_REGNUM+32) ? builtin_type_double \
  44          : ((N) == 32 /*SR*/) ? builtin_type_uint32 \
  45          : ((N) >= 70 && (N) <= 89) ? builtin_type_uint32 \
  46          : builtin_type_int)
  47
  48 #endif /* N32 */
  49
  50
  51 /* The signal handler trampoline is called _sigtramp.  */
  52 #undef IN_SIGTRAMP
  53 #define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigtramp", name))
  54
  55 /* Irix 5 saves a full 64 bits for each register.  We skip 2 * 4 to
  56    get to the saved PC (the register mask and status register are both
  57    32 bits) and then another 4 to get to the lower 32 bits.  We skip
  58    the same 4 bytes, plus the 8 bytes for the PC to get to the
  59    registers, and add another 4 to get to the lower 32 bits.  We skip
  60    8 bytes per register.  */
  61 #undef SIGFRAME_PC_OFF
  62 #define SIGFRAME_PC_OFF         (SIGFRAME_BASE + 2 * 4 + 4)
  63 #undef SIGFRAME_REGSAVE_OFF
  64 #define SIGFRAME_REGSAVE_OFF    (SIGFRAME_BASE + 2 * 4 + 8 + 4)
  65 #undef SIGFRAME_FPREGSAVE_OFF
  66 #define SIGFRAME_FPREGSAVE_OFF  (SIGFRAME_BASE + 2 * 4 + 8 + 32 * 8 + 4)
  67 #define SIGFRAME_REG_SIZE       8