1/* Definitions of target machine for GNU compiler, for a 3b1 using GAS. 2 Copyright (C) 1987, 1988 Free Software Foundation, Inc. 3 4This file is part of GNU CC. 5 6GNU CC is free software; you can redistribute it and/or modify 7it under the terms of the GNU General Public License as published by 8the Free Software Foundation; either version 2, or (at your option) 9any later version. 10 11GNU CC is distributed in the hope that it will be useful, 12but WITHOUT ANY WARRANTY; without even the implied warranty of 13MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14GNU General Public License for more details. 15 16You should have received a copy of the GNU General Public License 17along with GNU CC; see the file COPYING. If not, write to 18the Free Software Foundation, 59 Temple Place - Suite 330, 19Boston, MA 02111-1307, USA. */ 20 21#include "m68k/m68k.h" 22 23/* See m68k.h. 0 means 68000 with no 68881. */ 24#define TARGET_DEFAULT 0 25 26/* Don't try using XFmode. */ 27#undef LONG_DOUBLE_TYPE_SIZE 28#define LONG_DOUBLE_TYPE_SIZE 64 29 30/* Define __HAVE_68881 in preprocessor only if -m68881 is specified. 31 This will control the use of inline 68881 insns in certain macros. 32 Also inform the program which CPU this is for. */ 33#define CPP_SPEC "%{m68881:-D__HAVE_68881__} \ 34%{!ansi:%{m68020:-Dmc68020}%{mc68020:-Dmc68020}%{!mc68020:%{!m68020:-Dmc68010}}}" 35 36/* -m68020 requires special flags to the assembler. */ 37#define ASM_SPEC \ 38 "%{m68020:-mc68020}%{mc68020:-mc68020}%{!mc68020:%{!m68020:-mc68010}}" 39 40/* Names to predefine in the preprocessor for this target machine. */ 41#define CPP_PREDEFINES "-Dmc68000 -Dmc68k -Dunix -Dunixpc -Asystem=unix -Asystem=svr3 -Acpu=m68k -Amachine=m68k" 42 43/* This is (not really) BSD, so (but) it wants DBX format. */ 44#define DBX_DEBUGGING_INFO 1 45 46/* Specify how to pad function arguments. 47 Value should be `upward', `downward' or `none'. 48 Same as the default, except no padding for large or variable-size args. */ 49#define FUNCTION_ARG_PADDING(MODE, TYPE) \ 50 (((MODE) == BLKmode \ 51 ? ((TYPE) && TREE_CODE (TYPE_SIZE (TYPE)) == INTEGER_CST \ 52 && int_size_in_bytes (TYPE) < PARM_BOUNDARY / BITS_PER_UNIT) \ 53 : GET_MODE_BITSIZE (MODE) < PARM_BOUNDARY) \ 54 ? downward : none) 55 56/* Every structure or union's size must be a multiple of 2 bytes. */ 57#define STRUCTURE_SIZE_BOUNDARY 16 58 59/* Generate calls to memcpy, memcmp and memset. */ 60#define TARGET_MEM_FUNCTIONS 61 62