]>
Commit | Line | Data |
---|---|---|
fc152a4b | 1 | /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. |
9311a396 | 2 | Copyright (C) 1991, 93, 94, 96, 98, 99, 2000 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 | ||
fc152a4b RK |
24 | /* Make an enum class that gives all the machine modes. */ |
25 | ||
26 | #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM, | |
27 | ||
28 | enum machine_mode { | |
29 | #include "machmode.def" | |
fc152a4b RK |
30 | MAX_MACHINE_MODE }; |
31 | ||
32 | #undef DEF_MACHMODE | |
33 | ||
fc152a4b RK |
34 | #ifndef NUM_MACHINE_MODES |
35 | #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE | |
36 | #endif | |
37 | ||
38 | /* Get the name of mode MODE as a string. */ | |
39 | ||
a4ec8d12 | 40 | extern const char * const mode_name[]; |
0f41302f | 41 | #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)]) |
fc152a4b RK |
42 | |
43 | enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, | |
4a39a918 | 44 | MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS}; |
fc152a4b RK |
45 | |
46 | /* Get the general kind of object that mode MODE represents | |
47 | (integer, floating, complex, etc.) */ | |
48 | ||
aa0b4465 | 49 | extern const enum mode_class mode_class[]; |
0f41302f | 50 | #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)]) |
fc152a4b | 51 | |
ae1ae48c RK |
52 | /* Nonzero if MODE is an integral mode. */ |
53 | #define INTEGRAL_MODE_P(MODE) \ | |
54 | (GET_MODE_CLASS (MODE) == MODE_INT \ | |
55 | || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ | |
56 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) | |
57 | ||
58 | /* Nonzero if MODE is a floating-point mode. */ | |
59 | #define FLOAT_MODE_P(MODE) \ | |
60 | (GET_MODE_CLASS (MODE) == MODE_FLOAT \ | |
61 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
62 | ||
76080169 RH |
63 | /* Nonzero if MODE is a complex mode. */ |
64 | #define COMPLEX_MODE_P(MODE) \ | |
65 | (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ | |
66 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
67 | ||
fc152a4b RK |
68 | /* Get the size in bytes of an object of mode MODE. */ |
69 | ||
aa0b4465 | 70 | extern const int mode_size[]; |
0f41302f | 71 | #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)]) |
fc152a4b RK |
72 | |
73 | /* Get the size in bytes of the basic parts of an object of mode MODE. */ | |
74 | ||
aa0b4465 | 75 | extern const int mode_unit_size[]; |
0f41302f | 76 | #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)]) |
fc152a4b RK |
77 | |
78 | /* Get the number of units in the object. */ | |
79 | ||
80 | #define GET_MODE_NUNITS(MODE) \ | |
fa45b1eb RS |
81 | ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \ |
82 | : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))) | |
fc152a4b RK |
83 | |
84 | /* Get the size in bits of an object of mode MODE. */ | |
85 | ||
0f41302f | 86 | #define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)]) |
fc152a4b | 87 | |
64ccbc99 KG |
88 | #ifdef HOST_WIDE_INT |
89 | ||
fc152a4b RK |
90 | /* Get a bitmask containing 1 for all bits in a word |
91 | that fit within mode MODE. */ | |
92 | ||
aa0b4465 | 93 | extern const unsigned HOST_WIDE_INT mode_mask_array[]; |
913f68c1 JC |
94 | |
95 | #define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)] | |
fc152a4b | 96 | |
64ccbc99 KG |
97 | #endif /* HOST_WIDE_INT */ |
98 | ||
fc152a4b RK |
99 | /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ |
100 | ||
aa0b4465 | 101 | extern const unsigned char mode_wider_mode[]; |
913f68c1 | 102 | #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)]) |
fc152a4b | 103 | |
c92c981a RK |
104 | /* Return the mode for data of a given size SIZE and mode class CLASS. |
105 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. | |
106 | The value is BLKmode if no other mode is found. */ | |
107 | ||
13536812 | 108 | extern enum machine_mode mode_for_size PARAMS ((unsigned int, enum mode_class, int)); |
c92c981a | 109 | |
27922c13 RH |
110 | /* Similar, but find the smallest mode for a given width. */ |
111 | ||
13536812 | 112 | extern enum machine_mode smallest_mode_for_size PARAMS ((unsigned int, |
27922c13 RH |
113 | enum mode_class)); |
114 | ||
115 | ||
d006aa54 RH |
116 | /* Return an integer mode of the exact same size as the input mode, |
117 | or BLKmode on failure. */ | |
118 | ||
13536812 | 119 | extern enum machine_mode int_mode_for_mode PARAMS ((enum machine_mode)); |
d006aa54 | 120 | |
fc152a4b RK |
121 | /* Find the best mode to use to access a bit field. */ |
122 | ||
729a2125 RK |
123 | extern enum machine_mode get_best_mode PARAMS ((int, int, unsigned int, |
124 | enum machine_mode, int)); | |
fc152a4b RK |
125 | |
126 | /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ | |
127 | ||
128 | #define GET_MODE_ALIGNMENT(MODE) \ | |
729a2125 RK |
129 | (unsigned int) MIN (BIGGEST_ALIGNMENT, \ |
130 | MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))) | |
fc152a4b | 131 | |
4a39a918 RK |
132 | /* For each class, get the narrowest mode in that class. */ |
133 | ||
aa0b4465 | 134 | extern const enum machine_mode class_narrowest_mode[]; |
0f41302f | 135 | #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)] |
4a39a918 | 136 | |
6c164c81 RK |
137 | /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD |
138 | and the mode whose class is Pmode and whose size is POINTER_SIZE. */ | |
4a39a918 RK |
139 | |
140 | extern enum machine_mode byte_mode; | |
141 | extern enum machine_mode word_mode; | |
6c164c81 | 142 | extern enum machine_mode ptr_mode; |
4a39a918 | 143 | |
fc152a4b | 144 | #endif /* not HAVE_MACHINE_MODES */ |