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