gdb/xm-mips.h

   1 /* Definitions to make GDB run on a mips box under 4.3bsd.
   2    Copyright (C) 1986, 1987, 1989 Free Software Foundation, Inc.
   3    Contributed by Per Bothner(bothner@cs.wisc.edu) at U.Wisconsin
   4    and by Alessandro Forin(af@cs.cmu.edu) at CMU
   5
   6 This file is part of GDB.
   7
   8 This program is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 2 of the License, or
  11 (at your option) any later version.
  12
  13 This program is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with this program; if not, write to the Free Software
  20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 #if !defined (HOST_BYTE_ORDER)
  23 #define HOST_BYTE_ORDER LITTLE_ENDIAN
  24 #endif
  25
  26 /* Get rid of any system-imposed stack limit if possible */
  27
  28 #define SET_STACK_LIMIT_HUGE
  29
  30 /* This WOULD BE the amount to subtract from u.u_ar0
  31    to get the offset in the core file of the register values.
  32    But Mips' ptrace works on regnums, not displacements.  So since
  33    REGISTER_U_ADDR is called for both core files and ptrace, use
  34    BLOCKEND as a flag:  0 for core files, 1 for ptrace.  What a
  35    kludge.  */
  36
  37 #define KERNEL_U_ADDR (int)reg_ptr      /* Magic, causes a zero blockend */
  38
  39 #define REGISTER_U_ADDR(addr, blockend, regno)          \
  40    if (blockend == 0) {                                 \
  41         if (regno < 38) addr = (NBPG*UPAGES) + (regno - 38)*sizeof(int);\
  42         else addr = 0; /* ..somewhere in the pcb */     \
  43    } else if (regno < 32) addr = regno;                 \
  44    else if (regno == PC_REGNUM) addr = 96;              \
  45    else if (regno == 36) addr = 97;                     \
  46    else if (regno == HI_REGNUM) addr = 98;              \
  47    else if (regno == LO_REGNUM) addr = 99;              \
  48    else if (regno == FCRCS_REGNUM) addr = 100;          \
  49    else if (regno == FCRIR_REGNUM) addr = 101;          \
  50    else if (regno >= FP0_REGNUM) addr = regno - (FP0_REGNUM-32);\
  51    else addr = 0;
  52
  53 /* Override copies of {fetch,store}_inferior_registers in infptrace.c.  */
  54 #define FETCH_INFERIOR_REGISTERS
  55
  56 /* Kernel is a bit tenacious about sharing text segments, disallowing bpts.  */
  57 #define ONE_PROCESS_WRITETEXT