1 /* Definitions of target machine for GNU compiler. Concurrent 68k version. 2 Copyright (C) 1987, 1988, 1995, 1996, 1997 Free Software Foundation, Inc. 3 4 This file is part of GNU CC. 5 6 GNU CC is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU CC is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU CC; see the file COPYING. If not, write to 18 the Free Software Foundation, 59 Temple Place - Suite 330, 19 Boston, 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