1 /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h.
2 Copyright (C) 1991, 1993, 1994, 1996 Free Software Foundation, Inc.
4 This file is part of GNU CC.
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)
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.
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. */
21 #ifndef HAVE_MACHINE_MODES
22 #define HAVE_MACHINE_MODES
24 #include "gansidecl.h"
26 /* Strictly speaking, this isn't the proper place to include these definitions,
27 but this file is included by every GCC file.
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. */
36 #define MIN(X,Y) ((X) < (Y) ? (X) : (Y))
37 #define MAX(X,Y) ((X) > (Y) ? (X) : (Y))
39 /* Find the largest host integer type and set its size and type. */
41 #ifndef HOST_BITS_PER_WIDE_INT
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
47 #define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_INT
48 #define HOST_WIDE_INT int
53 /* Provide a default way to print an address in hex via printf. */
55 #ifndef HOST_PTR_PRINTF
56 # ifdef HAVE_PRINTF_PTR
57 # define HOST_PTR_PRINTF "%p"
59 # define HOST_PTR_PRINTF \
60 (sizeof (int) == sizeof (char *) ? "%x" \
61 : sizeof (long) == sizeof (char *) ? "%lx" : "%llx")
63 #endif /* ! HOST_PTR_PRINTF */
65 /* Provide defaults for the way to print a HOST_WIDE_INT
66 in various manners. */
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"
72 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
73 #define HOST_WIDE_INT_PRINT_DEC "%ld"
75 #define HOST_WIDE_INT_PRINT_DEC "%lld"
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"
84 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
85 #define HOST_WIDE_INT_PRINT_UNSIGNED "%lu"
87 #define HOST_WIDE_INT_PRINT_UNSIGNED "%llu"
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"
96 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
97 #define HOST_WIDE_INT_PRINT_HEX "0x%lx"
99 #define HOST_WIDE_INT_PRINT_HEX "0x%llx"
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"
109 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
110 #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
112 #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
116 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_INT
117 #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%x%08x"
119 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
120 #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
122 #define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%08llx"
128 /* Make an enum class that gives all the machine modes. */
130 #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM,
133 #include "machmode.def"
135 #ifdef EXTRA_CC_MODES
142 #ifndef NUM_MACHINE_MODES
143 #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE
146 /* Get the name of mode MODE as a string. */
148 extern char *mode_name
[];
149 #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)])
151 enum mode_class
{ MODE_RANDOM
, MODE_INT
, MODE_FLOAT
, MODE_PARTIAL_INT
, MODE_CC
,
152 MODE_COMPLEX_INT
, MODE_COMPLEX_FLOAT
, MAX_MODE_CLASS
};
154 /* Get the general kind of object that mode MODE represents
155 (integer, floating, complex, etc.) */
157 extern enum mode_class mode_class
[];
158 #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)])
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)
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)
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)
176 /* Get the size in bytes of an object of mode MODE. */
178 extern int mode_size
[];
179 #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)])
181 /* Get the size in bytes of the basic parts of an object of mode MODE. */
183 extern int mode_unit_size
[];
184 #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)])
186 /* Get the number of units in the object. */
188 #define GET_MODE_NUNITS(MODE) \
189 ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \
190 : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE))))
192 /* Get the size in bits of an object of mode MODE. */
194 #define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)])
196 /* Get a bitmask containing 1 for all bits in a word
197 that fit within mode MODE. */
199 extern const unsigned HOST_WIDE_INT mode_mask_array
[];
201 #define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)]
203 /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */
205 extern unsigned char mode_wider_mode
[];
206 #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)])
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. */
212 extern enum machine_mode mode_for_size
PROTO((unsigned int, enum mode_class
, int));
214 /* Find the best mode to use to access a bit field. */
216 extern enum machine_mode get_best_mode
PROTO((int, int, int, enum machine_mode
, int));
218 /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */
220 #define GET_MODE_ALIGNMENT(MODE) \
221 MIN (BIGGEST_ALIGNMENT, \
222 MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT)))
224 /* For each class, get the narrowest mode in that class. */
226 extern enum machine_mode class_narrowest_mode
[];
227 #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)]
229 /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD
230 and the mode whose class is Pmode and whose size is POINTER_SIZE. */
232 extern enum machine_mode byte_mode
;
233 extern enum machine_mode word_mode
;
234 extern enum machine_mode ptr_mode
;
236 #endif /* not HAVE_MACHINE_MODES */