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- /* Definitions of target machine for GNU compiler, for a 3b1 using GAS.
- Copyright (C) 1987, 1988 Free Software Foundation, Inc.
-
- 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. 0 means 68000 with no 68881. */
- #define TARGET_DEFAULT 0
-
- /* Don't try using XFmode. */
- #undef LONG_DOUBLE_TYPE_SIZE
- #define LONG_DOUBLE_TYPE_SIZE 64
-
- /* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
- This will control the use of inline 68881 insns in certain macros.
- Also inform the program which CPU this is for. */
- #define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
- %{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"
-
- /* -m68020 requires special flags to the assembler. */
- #define ASM_SPEC \
- "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}"
-
- /* Names to predefine in the preprocessor for this target machine. */
- #define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc -Asystem(unix) -Asystem(svr3) -Acpu(m68k) -Amachine(m68k)"
-
- /* This is (not really) BSD, so (but) it wants DBX format. */
- #define DBX_DEBUGGING_INFO
-
- /* Brain damage. */
- #define SCCS_DIRECTIVE
-
- /* Specify how to pad function arguments.
- Value should be `upward', `downward' or `none'.
- Same as the default, except no padding for large or variable-size args. */
- #define FUNCTION_ARG_PADDING(MODE, TYPE) \
- (((MODE) == BLKmode \
- ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
- && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
- : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
- ? downward : none)
-
- /* Override part of the obstack macros. */
- #define __PTR_TO_INT(P) ((int)(P))
- #define __INT_TO_PTR(P) ((char *)(P))
-
- /* 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
-
-