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- /* Definitions of target machine for GNU compiler. Altos 3068 68020 version.
- Copyright (C) 1988, 1989, 1993 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
-
- /* Don't try using XFmode. */
- #undef LONG_DOUBLE_TYPE_SIZE
- #define LONG_DOUBLE_TYPE_SIZE 64
- #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 -Asystem(unix) -Acpu(m68k) -Amachine(m68k)"
-
- /* 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) \
- do { char dstr[30]; \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
- fprintf (FILE, "\t.double 0r%s\n", dstr); \
- } while (0)
-
- /* This is how to output an assembler line defining a `float' constant. */
-
- #undef ASM_OUTPUT_FLOAT
- #define ASM_OUTPUT_FLOAT(FILE,VALUE) \
- do { char dstr[30]; \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.20e", dstr); \
- fprintf (FILE, "\t.single 0r%s\n", dstr); \
- } while (0)
-
- #undef ASM_OUTPUT_FLOAT_OPERAND
- #define ASM_OUTPUT_FLOAT_OPERAND(CODE,FILE,VALUE) \
- do { \
- if (CODE == 'f') \
- { \
- char dstr[30]; \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.9g", dstr); \
- fprintf (FILE, "#0r%s", dstr); \
- } \
- else \
- { \
- long l; \
- REAL_VALUE_TO_TARGET_SINGLE (VALUE, l); \
- if (sizeof (int) == sizeof (long)) \
- asm_fprintf ((FILE), "%I0x%x", l); \
- else \
- asm_fprintf ((FILE), "%I0x%lx", l); \
- } \
- } while (0)
-
- #undef ASM_OUTPUT_DOUBLE_OPERAND
- #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE) \
- do { char dstr[30]; \
- REAL_VALUE_TO_DECIMAL (VALUE, "%.20g", dstr); \
- fprintf (FILE, "#0r%s", dstr); \
- } while (0)
-
- /* 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"); \
- }
-