64 lines
2.3 KiB
C
64 lines
2.3 KiB
C
/* Definitions of target machine for GNU compiler, for a 3b1 using GAS.
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Copyright (C) 1987, 1988 Free Software Foundation, Inc.
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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, 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "m68k.h"
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/* See m68k.h. 0 means 68000 with no 68881. */
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#define TARGET_DEFAULT 0
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/* Define __HAVE_68881 in preprocessor only if -m68881 is specified.
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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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#define CPP_SPEC "%{m68881:-D__HAVE_68881__} \
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%{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}"
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/* -m68020 requires special flags to the assembler. */
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#define ASM_SPEC \
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"%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}"
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/* Names to predefine in the preprocessor for this target machine. */
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#define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc"
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/* This is (not really) BSD, so (but) it wants DBX format. */
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#define DBX_DEBUGGING_INFO
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/* Brain damage. */
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#define SCCS_DIRECTIVE
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/* Specify how to pad function arguments.
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Value should be `upward', `downward' or `none'.
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Same as the default, except no padding for large or variable-size args. */
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#define FUNCTION_ARG_PADDING(MODE, TYPE) \
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(((MODE) == BLKmode \
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? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \
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&& int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \
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: GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \
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? downward : none)
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/* Override part of the obstack macros. */
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#define __PTR_TO_INT(P) ((int)(P))
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#define __INT_TO_PTR(P) ((char *)(P))
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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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