1/* Definitions of target machine for GNU compiler. Concurrent 68k version. 2 Copyright (C) 1987, 1988, 1995, 1996, 1997 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#ifndef MASSCOMP 22#define MASSCOMP 23#endif 24 25#ifndef CONCURRENT 26#define CONCURRENT 27#endif 28 29#ifndef __mc68000__ 30#define __mc68000__ 31#endif 32 33#ifndef __mc68020__ 34#define __mc68020__ 35#endif 36 37#define USE_GAS 38#define MOVE_RATIO 100 39 40#define SPACE_AFTER_L_OPTION 41#define SWITCHES_NEED_SPACES "oL" 42 43/* See m68k.h. 7 means 68020 with 68881. */ 44#define TARGET_DEFAULT (MASK_68040|MASK_BITFIELD|MASK_68881|MASK_68020) 45 46#include "m68k/m68k.h" 47 48#define SIZE_TYPE "int" 49 50/* for 68k machines this only needs to be TRUE for the 68000 */ 51 52#undef STRICT_ALIGNMENT 53#define STRICT_ALIGNMENT 0 54 55/* Names to predefine in the preprocessor for this target machine. */ 56#define CPP_PREDEFINES \ 57 "-Dmc68000 -Dmasscomp -DMASSCOMP -Dunix -DLANGUAGE_C -Dconcurrent -DCONCURRENT" 58 59#undef TARGET_VERSION 60#define TARGET_VERSION fprintf (stderr, " (68k, GNU GAS syntax)"); 61 62/* Discard internal local symbols beginning with 'L'. */ 63#define LINK_SPEC "-X" 64 65/* Every structure or union's size must be a multiple of 4 bytes. */ 66#define STRUCTURE_SIZE_BOUNDARY 16 67 68/* No data type wants to be aligned rounder than this. */ 69#undef BIGGEST_ALIGNMENT 70#define BIGGEST_ALIGNMENT 32 71 72/* Allocation boundary (in *bits*) for storing pointers in memory. */ 73#undef POINTER_BOUNDARY 74#define POINTER_BOUNDARY 32 75 76/* Alignment of field after `int : 0' in a structure. */ 77#undef EMPTY_FIELD_BOUNDARY 78#define EMPTY_FIELD_BOUNDARY 32 79 80/* Allocation boundary in bits for the code of a function */ 81#undef FUNCTION_BOUNDARY 82#define FUNCTION_BOUNDARY 32 83 84/* Make strings long-word aligned so dhrystones will run faster. */ 85#define CONSTANT_ALIGNMENT(EXP, ALIGN) \ 86 (TREE_CODE (EXP) == STRING_CST \ 87 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 88 89/* Make arrays of chars word-aligned for the same reasons. */ 90#define DATA_ALIGNMENT(TYPE, ALIGN) \ 91 (TREE_CODE (TYPE) == ARRAY_TYPE \ 92 && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ 93 && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN)) 94 95/* This is BSD, so it wants DBX format. */ 96#define DBX_DEBUGGING_INFO 1 97 98/* Override parts of m68k.h */ 99 100#undef CALL_USED_REGISTERS 101#define CALL_USED_REGISTERS \ 102 {1, 1, 0, 0, 0, 0, 0, 0, \ 103 1, 1, 0, 0, 0, 0, 0, 1, \ 104 1, 1, 0, 0, 0, 0, 1, 1 } 105 106#undef REG_ALLOC_ORDER 107#define REG_ALLOC_ORDER \ 108{ 0, 1, 2, 3, 4, 5, 6, 7,\ 109 8, 9, 10, 11, 12, 13, 14, 15, \ 110 16, 17, 22, 23, 18, 19, 20, 21 } 111 112#undef ASM_FILE_START 113#define ASM_FILE_START(FILE) \ 114 fprintf (FILE, "#NO_APP\n.globl fltused\n"); 115 116#undef ASM_OUTPUT_ALIGN 117#define ASM_OUTPUT_ALIGN(FILE,LOG) \ 118{ int _LOG = LOG; \ 119 if (_LOG == 1) \ 120 fprintf (FILE, "\t.even\n"); \ 121 else if (_LOG == 2) \ 122 fprintf (FILE, "\t.align 4\n"); \ 123 else if (_LOG != 0) \ 124 fprintf (FILE, "\t.align %d\n", _LOG);\ 125} 126 127/* crt0.c should use the vax-bsd style of entry, with a dummy arg. */ 128 129#define CRT0_DUMMIES bogus_fp, 130