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136 lines
4.2 KiB
C
136 lines
4.2 KiB
C
/* Definitions of target machine for GNU compiler. Altos 3068 68020 version.
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Copyright (C) 1988, 1989, 1993, 1996 Free Software Foundation, Inc.
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Contributed by Jyrki Kuoppala <jkp@cs.hut.fi>
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "m68k/m68k.h"
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/* See m68k.h. 7 means 68020 with 68881. */
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/* 5 is without 68881. Change to 7 if you have 68881 */
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#ifndef TARGET_DEFAULT
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#define TARGET_DEFAULT (MASK_BITFIELD|MASK_68020)
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/* Don't try using XFmode. */
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#undef LONG_DOUBLE_TYPE_SIZE
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#define LONG_DOUBLE_TYPE_SIZE 64
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#endif
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/* Define __HAVE_68881__ in preprocessor,
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according to the -m flags.
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This will control the use of inline 68881 insns in certain macros.
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Also inform the program which CPU this is for. */
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#if TARGET_DEFAULT & MASK_68881
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/* -m68881 is the default */
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#define CPP_SPEC \
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"%{!msoft-float:-D__HAVE_68881__ }\
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%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
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#else
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/* -msoft-float is the default */
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#define CPP_SPEC \
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"%{m68881:-D__HAVE_68881__ }\
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%{!ansi:%{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}}"
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#endif
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/* -m68000 requires special flags to the assembler. */
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#define ASM_SPEC \
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"%{m68000:-mc68010}%{mc68000:-mc68010}%{!mc68000:%{!m68000:-mc68020}}"
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/* Names to predefine in the preprocessor for this target machine. */
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#define CPP_PREDEFINES "-Dmc68000 -DPORTAR -Dmc68k32 -Uvax -Dm68k -Dunix -Asystem(unix) -Acpu(m68k) -Amachine(m68k)"
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/* Every structure or union's size must be a multiple of 2 bytes. */
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#define STRUCTURE_SIZE_BOUNDARY 16
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/* Generate calls to memcpy, memcmp and memset. */
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#define TARGET_MEM_FUNCTIONS
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/* We use gnu assembler, linker and gdb, so we want DBX format. */
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#define DBX_DEBUGGING_INFO
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/* Tell some conditionals we will use GAS. Is this really used? */
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#define USE_GAS
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/* This is how to output an assembler line defining a `double' constant. */
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#undef ASM_OUTPUT_DOUBLE
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#define ASM_OUTPUT_DOUBLE(FILE,VALUE) \
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do { char dstr[30]; \
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REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
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fprintf (FILE, "\t.double 0r%s\n", dstr); \
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} while (0)
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/* This is how to output an assembler line defining a `float' constant. */
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#undef ASM_OUTPUT_FLOAT
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#define ASM_OUTPUT_FLOAT(FILE,VALUE) \
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do { char dstr[30]; \
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REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
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fprintf (FILE, "\t.single 0r%s\n", dstr); \
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} while (0)
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#undef ASM_OUTPUT_FLOAT_OPERAND
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#define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE) \
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do { \
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if (CODE == 'f') \
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{ \
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char dstr[30]; \
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REAL_VALUE_TO_DECIMAL (VALUE, "%.9g", dstr); \
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fprintf (FILE, "#0r%s", dstr); \
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} \
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else \
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{ \
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long l; \
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REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \
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if (sizeof (int) == sizeof (long)) \
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asm_fprintf ((FILE), "%I0x%x", l); \
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else \
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asm_fprintf ((FILE), "%I0x%lx", l); \
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} \
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} while (0)
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#undef ASM_OUTPUT_DOUBLE_OPERAND
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#define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
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do { char dstr[30]; \
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REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \
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fprintf (FILE, "#0r%s", dstr); \
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} while (0)
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/* Return pointer values in both d0 and a0. */
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#undef FUNCTION_EXTRA_EPILOGUE
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#define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE) \
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{ \
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extern int current_function_returns_pointer; \
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if ((current_function_returns_pointer) && \
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! find_equiv_reg (0, get_last_insn (), 0, 0, 0, 8, Pmode))\
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fprintf (FILE, "\tmovel d0,a0\n"); \
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}
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