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/* Definitions of target machine for GNU compiler. Altos 3068 68020 version.
Copyright (C) 1988,1989 Free Software Foundation, Inc.
Written by Jyrki Kuoppala <jkp@cs.hut.fi>
Last modified: Mon Mar 6 22:47:58 1989
This file is part of GNU CC.
GNU CC 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, or (at your option)
any later version.
GNU CC 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 GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "m68k/m68k.h"
/* See m68k.h. 7 means 68020 with 68881. */
/* 5 is without 68881. Change to 7 if you have 68881 */
#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT 5
#endif
/* Define __HAVE_68881__ in preprocessor,
according to the -m flags.
This will control the use of inline 68881 insns in certain macros.
Also inform the program which CPU this is for. */
#if TARGET_DEFAULT & 02
/* -m68881 is the default */
#define CPP_SPEC \
"%{!msoft-float:-D__HAVE_68881__ }\
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
#else
/* -msoft-float is the default */
#define CPP_SPEC \
"%{m68881:-D__HAVE_68881__ }\
%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
#endif
/* -m68000 requires special flags to the assembler. */
#define ASM_SPEC \
"%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
/* Names to predefine in the preprocessor for this target machine. */
#define CPP_PREDEFINES "-Dmc68000 -DPORTAR -Dmc68k32 -Uvax -Dm68k -Dunix"
/* Every structure or union's size must be a multiple of 2 bytes. */
#define STRUCTURE_SIZE_BOUNDARY 16
/* Generate calls to memcpy, memcmp and memset. */
#define TARGET_MEM_FUNCTIONS
/* We use gnu assembler, linker and gdb, so we want DBX format. */
#define DBX_DEBUGGING_INFO
/* Tell some conditionals we will use GAS. Is this really used? */
#define USE_GAS
/* This is how to output an assembler line defining a `double' constant. */
#undef ASM_OUTPUT_DOUBLE
#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
fprintf (FILE, "\t.double 0r%.20e\n", (VALUE))
/* This is how to output an assembler line defining a `float' constant. */
#undef ASM_OUTPUT_FLOAT
#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
fprintf (FILE, "\t.single 0r%.20e\n", (VALUE))
#undef ASM_OUTPUT_FLOAT_OPERAND
#define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE) \
fprintf (FILE, "#0r%.9g", (VALUE))
#undef ASM_OUTPUT_DOUBLE_OPERAND
#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
fprintf (FILE, "#0r%.20g", (VALUE))
/* Return pointer values in both d0 and a0. */
#undef FUNCTION_EXTRA_EPILOGUE
#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \
{ \
extern int current_function_returns_pointer; \
if ((current_function_returns_pointer) && \
! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))\
fprintf (FILE, "\tmovel d0,a0\n"); \
}
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