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fc152a4b | 1 | /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. |
70c75d9f | 2 | Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc. |
fc152a4b RK |
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 | |
a35311b0 RK |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, |
19 | Boston, MA 02111-1307, USA. */ | |
fc152a4b | 20 | |
fc152a4b | 21 | #ifndef HAVE_MACHINE_MODES |
70c75d9f DE |
22 | #define HAVE_MACHINE_MODES |
23 | ||
24 | #include "gansidecl.h" | |
fc152a4b RK |
25 | |
26 | /* Strictly speaking, this isn't the proper place to include these definitions, | |
27 | but this file is included by every GCC file. | |
28 | ||
29 | Some systems define these in, e.g., param.h. We undefine these names | |
30 | here to avoid the warnings. We prefer to use our definitions since we | |
31 | know they are correct. */ | |
32 | ||
33 | #undef MIN | |
34 | #undef MAX | |
35 | ||
36 | #define MIN(X,Y) ((X) < (Y) ? (X) : (Y)) | |
37 | #define MAX(X,Y) ((X) > (Y) ? (X) : (Y)) | |
38 | ||
5f4f0e22 CH |
39 | /* Find the largest host integer type and set its size and type. */ |
40 | ||
41 | #ifndef HOST_BITS_PER_WIDE_INT | |
42 | ||
43 | #if HOST_BITS_PER_LONG > HOST_BITS_PER_INT | |
44 | #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG | |
45 | #define HOST_WIDE_INT long | |
46 | #else | |
47 | #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT | |
48 | #define HOST_WIDE_INT int | |
49 | #endif | |
50 | ||
51 | #endif | |
52 | ||
5f4f0e22 CH |
53 | /* Provide a default way to print an address in hex via printf. */ |
54 | ||
55 | #ifndef HOST_PTR_PRINTF | |
092f7be3 KG |
56 | # ifdef HAVE_PRINTF_PTR |
57 | # define HOST_PTR_PRINTF "%p" | |
58 | # else | |
59 | # define HOST_PTR_PRINTF \ | |
60 | (sizeof (int) == sizeof (char *) ? "%x" \ | |
61 | : sizeof (long) == sizeof (char *) ? "%lx" : "%llx") | |
62 | # endif | |
63 | #endif /* ! HOST_PTR_PRINTF */ | |
29cad4a4 RK |
64 | |
65 | /* Provide defaults for the way to print a HOST_WIDE_INT | |
66 | in various manners. */ | |
67 | ||
68 | #ifndef HOST_WIDE_INT_PRINT_DEC | |
69 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
70 | #define HOST_WIDE_INT_PRINT_DEC "%d" | |
71 | #else | |
72 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG | |
73 | #define HOST_WIDE_INT_PRINT_DEC "%ld" | |
74 | #else | |
75 | #define HOST_WIDE_INT_PRINT_DEC "%lld" | |
76 | #endif | |
77 | #endif | |
78 | #endif | |
79 | ||
80 | #ifndef HOST_WIDE_INT_PRINT_UNSIGNED | |
81 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
82 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%u" | |
83 | #else | |
84 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG | |
85 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%lu" | |
86 | #else | |
87 | #define HOST_WIDE_INT_PRINT_UNSIGNED "%llu" | |
88 | #endif | |
89 | #endif | |
90 | #endif | |
91 | ||
92 | #ifndef HOST_WIDE_INT_PRINT_HEX | |
93 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
94 | #define HOST_WIDE_INT_PRINT_HEX "0x%x" | |
95 | #else | |
96 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG | |
97 | #define HOST_WIDE_INT_PRINT_HEX "0x%lx" | |
98 | #else | |
99 | #define HOST_WIDE_INT_PRINT_HEX "0x%llx" | |
100 | #endif | |
101 | #endif | |
102 | #endif | |
103 | ||
104 | #ifndef HOST_WIDE_INT_PRINT_DOUBLE_HEX | |
105 | #if HOST_BITS_PER_WIDE_INT == 64 | |
106 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
107 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%016x" | |
108 | #else | |
109 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG | |
110 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx" | |
111 | #else | |
112 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx" | |
113 | #endif | |
114 | #endif | |
115 | #else | |
116 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT | |
117 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%08x" | |
118 | #else | |
119 | #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG | |
120 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx" | |
121 | #else | |
122 | #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%08llx" | |
123 | #endif | |
124 | #endif | |
125 | #endif | |
5f4f0e22 CH |
126 | #endif |
127 | ||
fc152a4b RK |
128 | /* Make an enum class that gives all the machine modes. */ |
129 | ||
130 | #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM, | |
131 | ||
132 | enum machine_mode { | |
133 | #include "machmode.def" | |
134 | ||
135 | #ifdef EXTRA_CC_MODES | |
136 | EXTRA_CC_MODES, | |
137 | #endif | |
138 | MAX_MACHINE_MODE }; | |
139 | ||
140 | #undef DEF_MACHMODE | |
141 | ||
fc152a4b RK |
142 | #ifndef NUM_MACHINE_MODES |
143 | #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE | |
144 | #endif | |
145 | ||
146 | /* Get the name of mode MODE as a string. */ | |
147 | ||
148 | extern char *mode_name[]; | |
0f41302f | 149 | #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)]) |
fc152a4b RK |
150 | |
151 | enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, | |
4a39a918 | 152 | MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS}; |
fc152a4b RK |
153 | |
154 | /* Get the general kind of object that mode MODE represents | |
155 | (integer, floating, complex, etc.) */ | |
156 | ||
157 | extern enum mode_class mode_class[]; | |
0f41302f | 158 | #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)]) |
fc152a4b | 159 | |
ae1ae48c RK |
160 | /* Nonzero if MODE is an integral mode. */ |
161 | #define INTEGRAL_MODE_P(MODE) \ | |
162 | (GET_MODE_CLASS (MODE) == MODE_INT \ | |
163 | || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ | |
164 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) | |
165 | ||
166 | /* Nonzero if MODE is a floating-point mode. */ | |
167 | #define FLOAT_MODE_P(MODE) \ | |
168 | (GET_MODE_CLASS (MODE) == MODE_FLOAT \ | |
169 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
170 | ||
76080169 RH |
171 | /* Nonzero if MODE is a complex mode. */ |
172 | #define COMPLEX_MODE_P(MODE) \ | |
173 | (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ | |
174 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
175 | ||
fc152a4b RK |
176 | /* Get the size in bytes of an object of mode MODE. */ |
177 | ||
178 | extern int mode_size[]; | |
0f41302f | 179 | #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)]) |
fc152a4b RK |
180 | |
181 | /* Get the size in bytes of the basic parts of an object of mode MODE. */ | |
182 | ||
183 | extern int mode_unit_size[]; | |
0f41302f | 184 | #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)]) |
fc152a4b RK |
185 | |
186 | /* Get the number of units in the object. */ | |
187 | ||
188 | #define GET_MODE_NUNITS(MODE) \ | |
fa45b1eb RS |
189 | ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \ |
190 | : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))) | |
fc152a4b RK |
191 | |
192 | /* Get the size in bits of an object of mode MODE. */ | |
193 | ||
0f41302f | 194 | #define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)]) |
fc152a4b RK |
195 | |
196 | /* Get a bitmask containing 1 for all bits in a word | |
197 | that fit within mode MODE. */ | |
198 | ||
913f68c1 JC |
199 | extern const unsigned HOST_WIDE_INT mode_mask_array[]; |
200 | ||
201 | #define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)] | |
fc152a4b RK |
202 | |
203 | /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ | |
204 | ||
913f68c1 JC |
205 | extern unsigned char mode_wider_mode[]; |
206 | #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)]) | |
fc152a4b | 207 | |
c92c981a RK |
208 | /* Return the mode for data of a given size SIZE and mode class CLASS. |
209 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. | |
210 | The value is BLKmode if no other mode is found. */ | |
211 | ||
521f2d6f | 212 | extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int)); |
c92c981a | 213 | |
d006aa54 RH |
214 | /* Return an integer mode of the exact same size as the input mode, |
215 | or BLKmode on failure. */ | |
216 | ||
217 | extern enum machine_mode int_mode_for_mode PROTO((enum machine_mode)); | |
218 | ||
fc152a4b RK |
219 | /* Find the best mode to use to access a bit field. */ |
220 | ||
521f2d6f | 221 | extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int)); |
fc152a4b RK |
222 | |
223 | /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ | |
224 | ||
225 | #define GET_MODE_ALIGNMENT(MODE) \ | |
226 | MIN (BIGGEST_ALIGNMENT, \ | |
227 | MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))) | |
228 | ||
4a39a918 RK |
229 | /* For each class, get the narrowest mode in that class. */ |
230 | ||
231 | extern enum machine_mode class_narrowest_mode[]; | |
0f41302f | 232 | #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)] |
4a39a918 | 233 | |
6c164c81 RK |
234 | /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD |
235 | and the mode whose class is Pmode and whose size is POINTER_SIZE. */ | |
4a39a918 RK |
236 | |
237 | extern enum machine_mode byte_mode; | |
238 | extern enum machine_mode word_mode; | |
6c164c81 | 239 | extern enum machine_mode ptr_mode; |
4a39a918 | 240 | |
fc152a4b | 241 | #endif /* not HAVE_MACHINE_MODES */ |