[thirdparty/binutils-gdb.git] / gdb / config / m68k / tm-delta68.h

/* Target definitions for delta68.
   Copyright 1993, 1994, 1998 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.  */

/* Define BPT_VECTOR if it is different than the default.
   This is the vector number used by traps to indicate a breakpoint. */

#define BPT_VECTOR 0x1

#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled%"
#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled%"

/* Amount PC must be decremented by after a breakpoint.
   On the Delta, the kernel decrements it for us.  */

#define DECR_PC_AFTER_BREAK 0

/* Not sure what happens if we try to store this register, but
   phdm@info.ucl.ac.be says we need this define.  */

#define CANNOT_STORE_REGISTER(regno)	(regno == FPI_REGNUM)

/* 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 returns a float/double value, use fp0 in sysV68.  */
/* When it returns a pointer value, use a0 in sysV68.  */

#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),							\
	    (char *) ((REGBUF) +					\
		      (TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 :	\
		       (TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)))), \
	    TYPE_LENGTH(TYPE))

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

/* When it returns a float/double value, use fp0 in sysV68.  */
/* When it returns a pointer value, use a0 in sysV68.  */

#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 ((TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : 0), \
			  VALBUF, TYPE_LENGTH (TYPE))

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

extern int delta68_frame_num_args PARAMS ((struct frame_info * fi));
#define FRAME_NUM_ARGS(fi) (delta68_frame_num_args ((fi)))

/* On M68040 versions of sysV68 R3V7.1, ptrace(PT_WRITE_I) does not clear
   the processor's instruction cache as it should.  */
#define CLEAR_INSN_CACHE()	clear_insn_cache()

#include "m68k/tm-m68k.h"

/* Extract from an array REGBUF containing the (raw) register state
   the address in which a function should return its structure value,
   as a CORE_ADDR (or an expression that can be used as one).  */

#undef EXTRACT_STRUCT_VALUE_ADDRESS
#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF)\
	(*(CORE_ADDR *)((char*)(REGBUF) + 8 * 4))
Commit	Line	Data
c906108c SS	1	/* Target definitions for delta68.
	2	Copyright 1993, 1994, 1998 Free Software Foundation, Inc.
	3
c5aa993b	4	This file is part of GDB.
c906108c	5
c5aa993b JM	6	This program is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2 of the License, or
	9	(at your option) any later version.
c906108c	10
c5aa993b JM	11	This program is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
c906108c	15
c5aa993b JM	16	You should have received a copy of the GNU General Public License
	17	along with this program; if not, write to the Free Software
	18	Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
c906108c SS	20
	21	/* Define BPT_VECTOR if it is different than the default.
	22	This is the vector number used by traps to indicate a breakpoint. */
	23
	24	#define BPT_VECTOR 0x1
	25
	26	#define GCC_COMPILED_FLAG_SYMBOL "gcc_compiled%"
	27	#define GCC2_COMPILED_FLAG_SYMBOL "gcc2_compiled%"
	28
	29	/* Amount PC must be decremented by after a breakpoint.
	30	On the Delta, the kernel decrements it for us. */
	31
	32	#define DECR_PC_AFTER_BREAK 0
	33
	34	/* Not sure what happens if we try to store this register, but
	35	phdm@info.ucl.ac.be says we need this define. */
	36
	37	#define CANNOT_STORE_REGISTER(regno) (regno == FPI_REGNUM)
	38
	39	/* Extract from an array REGBUF containing the (raw) register state
	40	a function return value of type TYPE, and copy that, in virtual format,
	41	into VALBUF. */
	42
	43	/* When it returns a float/double value, use fp0 in sysV68. */
	44	/* When it returns a pointer value, use a0 in sysV68. */
	45
	46	#define EXTRACT_RETURN_VALUE(TYPE,REGBUF,VALBUF) \
	47	if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
	48	REGISTER_CONVERT_TO_VIRTUAL (FP0_REGNUM, TYPE, \
	49	&REGBUF[REGISTER_BYTE (FP0_REGNUM)], \
	50	VALBUF); \
	51	else \
	52	memcpy ((VALBUF), \
	53	(char *) ((REGBUF) + \
	54	(TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : \
	55	(TYPE_LENGTH(TYPE) >= 4 ? 0 : 4 - TYPE_LENGTH(TYPE)))), \
	56	TYPE_LENGTH(TYPE))
	57
	58	/* Write into appropriate registers a function return value
	59	of type TYPE, given in virtual format. */
	60
	61	/* When it returns a float/double value, use fp0 in sysV68. */
	62	/* When it returns a pointer value, use a0 in sysV68. */
	63
	64	#define STORE_RETURN_VALUE(TYPE,VALBUF) \
	65	if (TYPE_CODE (TYPE) == TYPE_CODE_FLT) \
	66	{ \
	67	char raw_buf[REGISTER_RAW_SIZE (FP0_REGNUM)]; \
	68	REGISTER_CONVERT_TO_RAW (TYPE, FP0_REGNUM, VALBUF, raw_buf); \
	69	write_register_bytes (REGISTER_BYTE (FP0_REGNUM), \
	70	raw_buf, REGISTER_RAW_SIZE (FP0_REGNUM)); \
	71	} \
	72	else \
	73	write_register_bytes ((TYPE_CODE(TYPE) == TYPE_CODE_PTR ? 8 * 4 : 0), \
	74	VALBUF, TYPE_LENGTH (TYPE))
	75
	76	/* Return number of args passed to a frame.
	77	Can return -1, meaning no way to tell. */
	78
c5aa993b	79	extern int delta68_frame_num_args PARAMS ((struct frame_info * fi));
cce74817	80	#define FRAME_NUM_ARGS(fi) (delta68_frame_num_args ((fi)))
c906108c SS	81
	82	/* On M68040 versions of sysV68 R3V7.1, ptrace(PT_WRITE_I) does not clear
	83	the processor's instruction cache as it should. */
	84	#define CLEAR_INSN_CACHE() clear_insn_cache()
	85
	86	#include "m68k/tm-m68k.h"
	87
	88	/* Extract from an array REGBUF containing the (raw) register state
	89	the address in which a function should return its structure value,
	90	as a CORE_ADDR (or an expression that can be used as one). */
	91
	92	#undef EXTRACT_STRUCT_VALUE_ADDRESS
	93	#define EXTRACT_STRUCT_VALUE_ADDRESS(REGBUF)\
	94	((CORE_ADDR )((char)(REGBUF) + 8 4))