xref: /openbsd/gnu/gcc/gcc/config/m68k/m68k-none.h (revision 404b540a)
1 /* Definitions of target machine for GNU compiler.  "naked" 68020.
2    Copyright (C) 1994, 1996, 2003, 2006 Free Software Foundation, Inc.
3 
4 This file is part of GCC.
5 
6 GCC 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 GCC 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 GCC; see the file COPYING.  If not, write to
18 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
19 Boston, MA 02110-1301, USA.  */
20 
21 /* Default to m68k (m68020).  */
22 #ifndef TARGET_CPU_DEFAULT
23 #define TARGET_CPU_DEFAULT M68K_CPU_m68k
24 #endif
25 
26 /* These are values set by the configure script in TARGET_CPU_DEFAULT.
27    They are (sequential integer + (desired value for TARGET_DEFAULT) << 4).  */
28 #define M68K_CPU_m68k	(0 + ((MASK_68020|MASK_68881|MASK_BITFIELD)<<4))
29 #define M68K_CPU_m68000 (1 + (0 << 4))
30 #define M68K_CPU_m68010 (1 + (0 << 4)) /* make same as m68000 */
31 #define M68K_CPU_m68020 (2 + ((MASK_68020|MASK_68881|MASK_BITFIELD) << 4))
32 #define M68K_CPU_m68030 (3 + ((MASK_68030|MASK_68020|MASK_68881|MASK_BITFIELD) << 4))
33 #define M68K_CPU_m68040 (4 + ((MASK_68040_ONLY|MASK_68020|MASK_68881|MASK_BITFIELD) << 4))
34 #define M68K_CPU_m68302 (5 + (0 << 4))
35 #define M68K_CPU_m68332 (6 + (MASK_68020 << 4))
36 
37 /* This is tested for below, so if target wants to override this, it
38    just set this first in cover file.  */
39 #ifndef TARGET_DEFAULT
40 #define TARGET_DEFAULT (TARGET_CPU_DEFAULT >> 4)
41 #endif
42 
43 /* Defaults for the various specs below.
44    These are collected here so we only test TARGET_CPU_DEFAULT once.  */
45 /* ??? CC1_CPU_DEFAULT_SPEC was copied over from the earlier version of
46    this file.  However, it's not used anywhere here because it doesn't
47    seem to be necessary.  */
48 #if TARGET_CPU_DEFAULT == M68K_CPU_m68k || TARGET_CPU_DEFAULT == M68K_CPU_m68020
49 #define ASM_CPU_DEFAULT_SPEC "-mc68020"
50 #define CC1_CPU_DEFAULT_SPEC "-m68020"
51 #else
52 #if TARGET_CPU_DEFAULT == M68K_CPU_m68000
53 #define ASM_CPU_DEFAULT_SPEC "-mc68000"
54 #define CC1_CPU_DEFAULT_SPEC "-m68000"
55 #else
56 #if TARGET_CPU_DEFAULT == M68K_CPU_m68030
57 #define ASM_CPU_DEFAULT_SPEC "-mc68030"
58 #define CC1_CPU_DEFAULT_SPEC "-m68030"
59 #else
60 #if TARGET_CPU_DEFAULT == M68K_CPU_m68040
61 #define ASM_CPU_DEFAULT_SPEC "-mc68040"
62 #define CC1_CPU_DEFAULT_SPEC "-m68040"
63 #else
64 #if TARGET_CPU_DEFAULT == M68K_CPU_m68302
65 #define ASM_CPU_DEFAULT_SPEC "-mc68302"
66 #define CC1_CPU_DEFAULT_SPEC "-m68302"
67 #else
68 #if TARGET_CPU_DEFAULT == M68K_CPU_m68332
69 #define ASM_CPU_DEFAULT_SPEC "-mc68332"
70 #define CC1_CPU_DEFAULT_SPEC "-m68332"
71 #else
72 Unrecognized value in TARGET_CPU_DEFAULT.
73 #endif
74 #endif
75 #endif
76 #endif
77 #endif
78 #endif
79 
80 /* Pass flags to gas indicating which type of processor we have.  */
81 
82 #undef ASM_SPEC
83 #define ASM_SPEC "\
84 %{m68851}%{mno-68851}%{m68881}%{mno-68881}%{msoft-float:-mno-68881} %{m68000}%{m68302}%{mc68000}%{m68010}%{m68020}%{mc68020}%{m68030}%{m68040}%{m68020-40:-mc68040} %{m68020-60:-mc68040} %{m68060}%{mcpu32}%{m68332}%{m5200}%{m5206e}%{m528x}%{m5307}%{m5407}%{mcfv4e}%{!mc68000:%{!m68000:%{!m68302:%{!m68010:%{!mc68020:%{!m68020:%{!m68030:%{!m68040:%{!m68020-40:%{!m68020-60:%{!m68060:%{!mcpu32:%{!m68332:%{!m5200:%{!m5206e:%{!m528x:%{!m5307:%{!m5407:%{!mcfv4e:%(asm_cpu_default)}}}}}}}}}}}}}}}}}}} \
85 %{fPIC:--pcrel} %{fpic:--pcrel} %{msep-data:--pcrel} %{mid-shared-library:--pcrel} \
86 "
87 
88 /* cc1/cc1plus always receives all the -m flags. If the specs strings above
89    are consistent with the flags in m68k.opt, there should be no need for
90    any further cc1/cc1plus specs.  */
91 
92 #undef CC1_SPEC
93 #define CC1_SPEC ""
94 
95 /* This macro defines names of additional specifications to put in the specs
96    that can be used in various specifications like CC1_SPEC.  Its definition
97    is an initializer with a subgrouping for each command option.
98 
99    Each subgrouping contains a string constant, that defines the
100    specification name, and a string constant that used by the GCC driver
101    program.
102 
103    Do not define this macro if it does not need to do anything.  */
104 
105 #define EXTRA_SPECS					\
106   { "asm_cpu_default",	ASM_CPU_DEFAULT_SPEC },		\
107   { "cc1_cpu_default",	CC1_CPU_DEFAULT_SPEC },		\
108   SUBTARGET_EXTRA_SPECS
109 
110 #define CPP_SUBTARGET_SPEC ""
111 #define SUBTARGET_EXTRA_SPECS
112 
113 /* Avoid building multilib libraries for the defaults.
114    For targets not handled here, just build the full set of multilibs.
115    The default is m68k 99.9% of the time anyway.  */
116 
117 #if TARGET_CPU_DEFAULT == M68K_CPU_m68k || TARGET_CPU_DEFAULT == M68K_CPU_m68020
118 #if TARGET_DEFAULT & MASK_68881
119 #define MULTILIB_DEFAULTS { "m68020", "m68881" }
120 #else
121 #define MULTILIB_DEFAULTS { "m68020", "msoft-float" }
122 #endif
123 #endif
124 
125 #if TARGET_CPU_DEFAULT == M68K_CPU_m68000 || TARGET_CPU_DEFAULT == M68K_CPU_m68302
126 #if TARGET_DEFAULT & MASK_68881
127 #define MULTILIB_DEFAULTS { "m68000", "m68881" }
128 #else
129 #define MULTILIB_DEFAULTS { "m68000", "msoft-float" }
130 #endif
131 #endif
132