gdb/config/mips/tm-irix6.h

   1 /* Target machine description for SGI Iris under Irix 6.x, for GDB.
   2
   3    Copyright 2001, 2002 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-bigmips64.h"
  23 #include "solib.h"
  24
  25 /* Redefine register numbers for SGI. */
  26
  27 #undef MIPS_REGISTER_NAMES
  28 #undef FP0_REGNUM
  29 #undef PC_REGNUM
  30 #undef HI_REGNUM
  31 #undef LO_REGNUM
  32 #undef CAUSE_REGNUM
  33 #undef BADVADDR_REGNUM
  34 #undef FCRCS_REGNUM
  35 #undef FCRIR_REGNUM
  36
  37 /* Initializer for an array of names for registers 32 and above.
  38    There should be NUM_REGS-32 strings in this initializer.  */
  39
  40 #define MIPS_REGISTER_NAMES     \
  41     {   "f0",   "f1",   "f2",   "f3",   "f4",   "f5",   "f6",   "f7", \
  42         "f8",   "f9",   "f10",  "f11",  "f12",  "f13",  "f14",  "f15", \
  43         "f16",  "f17",  "f18",  "f19",  "f20",  "f21",  "f22",  "f23",\
  44         "f24",  "f25",  "f26",  "f27",  "f28",  "f29",  "f30",  "f31",\
  45         "pc",   "cause", "bad", "hi",   "lo",   "fsr",  "fir" \
  46     }
  47
  48 /* Register numbers of various important registers.
  49    Note that some of these values are "real" register numbers,
  50    and correspond to the general registers of the machine,
  51    and some are "phony" register numbers which are too large
  52    to be actual register numbers as far as the user is concerned
  53    but do serve to get the desired values when passed to read_register.  */
  54
  55 #define FP0_REGNUM 32           /* Floating point register 0 (single float) */
  56 #define PC_REGNUM 64            /* Contains program counter */
  57 #define CAUSE_REGNUM 65         /* describes last exception */
  58 #define BADVADDR_REGNUM 66      /* bad vaddr for addressing exception */
  59 #define HI_REGNUM 67            /* Multiple/divide temp */
  60 #define LO_REGNUM 68            /* ... */
  61 #define FCRCS_REGNUM 69         /* FP control/status */
  62 #define FCRIR_REGNUM 70         /* FP implementation/revision */
  63
  64
  65 #undef  REGISTER_BYTES
  66 #define REGISTER_BYTES (MIPS_NUMREGS * 8 + (NUM_REGS - MIPS_NUMREGS) * MIPS_REGSIZE)
  67
  68 #undef  REGISTER_BYTE
  69 #define REGISTER_BYTE(N) \
  70      (((N) < FP0_REGNUM) ? (N) * MIPS_REGSIZE : \
  71       ((N) < FP0_REGNUM + 32) ?     \
  72       FP0_REGNUM * MIPS_REGSIZE + \
  73       ((N) - FP0_REGNUM) * sizeof(double) : \
  74       32 * sizeof(double) + ((N) - 32) * MIPS_REGSIZE)
  75
  76 /* The signal handler trampoline is called _sigtramp.  */
  77 #undef IN_SIGTRAMP
  78 #define IN_SIGTRAMP(pc, name) ((name) && STREQ ("_sigtramp", name))
  79
  80 /* Offsets for register values in _sigtramp frame.
  81    sigcontext is immediately above the _sigtramp frame on Irix.  */
  82 #undef SIGFRAME_BASE
  83 #define SIGFRAME_BASE           0
  84
  85 /* Irix 5 saves a full 64 bits for each register.  We skip 2 * 4 to
  86    get to the saved PC (the register mask and status register are both
  87    32 bits) and then another 4 to get to the lower 32 bits.  We skip
  88    the same 4 bytes, plus the 8 bytes for the PC to get to the
  89    registers, and add another 4 to get to the lower 32 bits.  We skip
  90    8 bytes per register.  */
  91 #undef SIGFRAME_PC_OFF
  92 #define SIGFRAME_PC_OFF         (SIGFRAME_BASE + 2 * 4 + 4)
  93 #undef SIGFRAME_REGSAVE_OFF
  94 #define SIGFRAME_REGSAVE_OFF    (SIGFRAME_BASE + 2 * 4 + 8 + 4)
  95 #undef SIGFRAME_FPREGSAVE_OFF
  96 #define SIGFRAME_FPREGSAVE_OFF  (SIGFRAME_BASE + 2 * 4 + 8 + 32 * 8 + 4)
  97 #define SIGFRAME_REG_SIZE       8
  98
  99 /* Select the disassembler */
 100 #undef TM_PRINT_INSN_MACH
 101 #define TM_PRINT_INSN_MACH bfd_mach_mips8000
 102
 103 /* Undefine those methods which have been multiarched.  */
 104 #undef REGISTER_VIRTUAL_TYPE