gdb/config/m68k/tm-news.h

   1 /* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
   2    Copyright 1987, 1989, 1991, 1993, 1999, 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 /* See following cpu type determination macro to get the machine type.
  23
  24    Here is an m-news.h file for gdb.  It supports the 68881 registers.
  25    by hikichi@srava.sra.junet
  26
  27    * Ptrace for handling floating register has a bug(before NEWS OS version 2.2),
  28    * After NEWS OS version 3.2, some of ptrace's bug is fixed.
  29    But we cannot change the floating register(see adb(1) in OS 3.2) yet.  */
  30
  31 /* Extract from an array REGBUF containing the (raw) register state
  32    a function return value of type TYPE, and copy that, in virtual format,
  33    into VALBUF.  */
  34
  35 /* when it return the floating value, use the FP0 in NEWS.  */
  36 #define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
  37   { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
  38       { \
  39         REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \
  40                                      &REGBUF[REGISTER_BYTE (FP0_REGNUM)], \
  41                                      VALBUF); \
  42       } \
  43     else \
  44       memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)); }
  45
  46 /* Write into appropriate registers a function return value
  47    of type TYPE, given in virtual format.  */
  48
  49 /* when it return the floating value, use the FP0 in NEWS.  */
  50 #define STORE_RETURN_VALUE(TYPE,VALBUF) \
  51   { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
  52       { \
  53         char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
  54         REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf); \
  55         write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \
  56                               raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
  57       } \
  58     else \
  59       write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)); }
  60
  61 /* Return number of args passed to a frame.
  62    Can return -1, meaning no way to tell.  */
  63
  64 extern int news_frame_num_args (struct frame_info *fi);
  65 #define FRAME_NUM_ARGS(fi) (news_frame_num_args ((fi)))
  66
  67 #include "m68k/tm-m68k.h"