[deliverable/binutils-gdb.git] / gdb / config / m68k / tm-news.h

/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
   Copyright 1987, 1989, 1991, 1993, 1999, 2000
   Free Software Foundation, Inc.

   This file is part of GDB.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* See following cpu type determination macro to get the machine type.

   Here is an m-news.h file for gdb.  It supports the 68881 registers.
   by hikichi@srava.sra.junet

   * Ptrace for handling floating register has a bug(before NEWS OS version 2.2),
   * After NEWS OS version 3.2, some of ptrace's bug is fixed.
   But we cannot change the floating register(see adb(1) in OS 3.2) yet.  */

/* Extract from an array REGBUF containing the (raw) register state
   a function return value of type TYPE, and copy that, in virtual format,
   into VALBUF.  */

/* when it return the floating value, use the FP0 in NEWS.  */
#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
  { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
      { \
	REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \
			             &REGBUF[REGISTER_BYTE (FP0_REGNUM)], \
				     VALBUF); \
      } \
    else \
      memcpy (VALBUF, REGBUF, TYPE_LENGTH (TYPE)); }

/* Write into appropriate registers a function return value
   of type TYPE, given in virtual format.  */

/* when it return the floating value, use the FP0 in NEWS.  */
#define STORE_RETURN_VALUE(TYPE,VALBUF) \
  { if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
      { \
	char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
	REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf); \
	write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \
			      raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
      } \
    else \
      write_register_bytes (0, VALBUF, TYPE_LENGTH (TYPE)); }

/* Return number of args passed to a frame.
   Can return -1, meaning no way to tell.  */

extern int news_frame_num_args (struct frame_info *fi);
#define FRAME_NUM_ARGS(fi) (news_frame_num_args ((fi)))

#include "m68k/tm-m68k.h"
Commit	Line	Data
c906108c	1	/* Parameters for execution on a Sony/NEWS, for GDB, the GNU debugger.
b6ba6518 KB	2	Copyright 1987, 1989, 1991, 1993, 1999, 2000
b6ba6518 KB	3	Free Software Foundation, Inc.
c906108c	4
c5aa993b	5	This file is part of GDB.
c906108c	6
c5aa993b JM	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.
c906108c	11
c5aa993b JM	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.
c906108c	16
c5aa993b JM	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. */
c906108c SS	21
	22	/* See following cpu type determination macro to get the machine type.
	23
c5aa993b JM	24	Here is an m-news.h file for gdb. It supports the 68881 registers.
c5aa993b JM	25	by hikichi@srava.sra.junet
c906108c	26
c5aa993b JM	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. */
c906108c SS	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
a14ed312	64	extern int news_frame_num_args (struct frame_info *fi);
cce74817	65	#define FRAME_NUM_ARGS(fi) (news_frame_num_args ((fi)))
c906108c SS	66
c906108c SS	67	#include "m68k/tm-m68k.h"