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fc152a4b | 1 | /* Machine mode definitions for GNU C-Compiler; included by rtl.h and tree.h. |
4283012f | 2 | Copyright (C) 1991, 1993, 1994, 1996, 1998 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 | 24 | /* Strictly speaking, this isn't the proper place to include these definitions, |
36b8337d | 25 | but this file is included by every GCC file. */ |
fc152a4b | 26 | |
5f4f0e22 CH |
27 | /* Provide a default way to print an address in hex via printf. */ |
28 | ||
29 | #ifndef HOST_PTR_PRINTF | |
092f7be3 KG |
30 | # ifdef HAVE_PRINTF_PTR |
31 | # define HOST_PTR_PRINTF "%p" | |
32 | # else | |
33 | # define HOST_PTR_PRINTF \ | |
34 | (sizeof (int) == sizeof (char *) ? "%x" \ | |
35 | : sizeof (long) == sizeof (char *) ? "%lx" : "%llx") | |
36 | # endif | |
37 | #endif /* ! HOST_PTR_PRINTF */ | |
29cad4a4 | 38 | |
fc152a4b RK |
39 | /* Make an enum class that gives all the machine modes. */ |
40 | ||
41 | #define DEF_MACHMODE(SYM, NAME, TYPE, SIZE, UNIT, WIDER) SYM, | |
42 | ||
43 | enum machine_mode { | |
44 | #include "machmode.def" | |
45 | ||
46 | #ifdef EXTRA_CC_MODES | |
47 | EXTRA_CC_MODES, | |
48 | #endif | |
49 | MAX_MACHINE_MODE }; | |
50 | ||
51 | #undef DEF_MACHMODE | |
52 | ||
fc152a4b RK |
53 | #ifndef NUM_MACHINE_MODES |
54 | #define NUM_MACHINE_MODES (int) MAX_MACHINE_MODE | |
55 | #endif | |
56 | ||
57 | /* Get the name of mode MODE as a string. */ | |
58 | ||
59 | extern char *mode_name[]; | |
0f41302f | 60 | #define GET_MODE_NAME(MODE) (mode_name[(int) (MODE)]) |
fc152a4b RK |
61 | |
62 | enum mode_class { MODE_RANDOM, MODE_INT, MODE_FLOAT, MODE_PARTIAL_INT, MODE_CC, | |
4a39a918 | 63 | MODE_COMPLEX_INT, MODE_COMPLEX_FLOAT, MAX_MODE_CLASS}; |
fc152a4b RK |
64 | |
65 | /* Get the general kind of object that mode MODE represents | |
66 | (integer, floating, complex, etc.) */ | |
67 | ||
68 | extern enum mode_class mode_class[]; | |
0f41302f | 69 | #define GET_MODE_CLASS(MODE) (mode_class[(int) (MODE)]) |
fc152a4b | 70 | |
ae1ae48c RK |
71 | /* Nonzero if MODE is an integral mode. */ |
72 | #define INTEGRAL_MODE_P(MODE) \ | |
73 | (GET_MODE_CLASS (MODE) == MODE_INT \ | |
74 | || GET_MODE_CLASS (MODE) == MODE_PARTIAL_INT \ | |
75 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT) | |
76 | ||
77 | /* Nonzero if MODE is a floating-point mode. */ | |
78 | #define FLOAT_MODE_P(MODE) \ | |
79 | (GET_MODE_CLASS (MODE) == MODE_FLOAT \ | |
80 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
81 | ||
76080169 RH |
82 | /* Nonzero if MODE is a complex mode. */ |
83 | #define COMPLEX_MODE_P(MODE) \ | |
84 | (GET_MODE_CLASS (MODE) == MODE_COMPLEX_INT \ | |
85 | || GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT) | |
86 | ||
fc152a4b RK |
87 | /* Get the size in bytes of an object of mode MODE. */ |
88 | ||
89 | extern int mode_size[]; | |
0f41302f | 90 | #define GET_MODE_SIZE(MODE) (mode_size[(int) (MODE)]) |
fc152a4b RK |
91 | |
92 | /* Get the size in bytes of the basic parts of an object of mode MODE. */ | |
93 | ||
94 | extern int mode_unit_size[]; | |
0f41302f | 95 | #define GET_MODE_UNIT_SIZE(MODE) (mode_unit_size[(int) (MODE)]) |
fc152a4b RK |
96 | |
97 | /* Get the number of units in the object. */ | |
98 | ||
99 | #define GET_MODE_NUNITS(MODE) \ | |
fa45b1eb RS |
100 | ((GET_MODE_UNIT_SIZE ((MODE)) == 0) ? 0 \ |
101 | : (GET_MODE_SIZE ((MODE)) / GET_MODE_UNIT_SIZE ((MODE)))) | |
fc152a4b RK |
102 | |
103 | /* Get the size in bits of an object of mode MODE. */ | |
104 | ||
0f41302f | 105 | #define GET_MODE_BITSIZE(MODE) (BITS_PER_UNIT * mode_size[(int) (MODE)]) |
fc152a4b | 106 | |
64ccbc99 KG |
107 | #ifdef HOST_WIDE_INT |
108 | ||
fc152a4b RK |
109 | /* Get a bitmask containing 1 for all bits in a word |
110 | that fit within mode MODE. */ | |
111 | ||
abef8789 | 112 | extern unsigned HOST_WIDE_INT mode_mask_array[]; |
913f68c1 JC |
113 | |
114 | #define GET_MODE_MASK(MODE) mode_mask_array[(int) (MODE)] | |
fc152a4b | 115 | |
64ccbc99 KG |
116 | #endif /* HOST_WIDE_INT */ |
117 | ||
fc152a4b RK |
118 | /* Get the next wider natural mode (eg, QI -> HI -> SI -> DI -> TI). */ |
119 | ||
913f68c1 JC |
120 | extern unsigned char mode_wider_mode[]; |
121 | #define GET_MODE_WIDER_MODE(MODE) ((enum machine_mode)mode_wider_mode[(int) (MODE)]) | |
fc152a4b | 122 | |
c92c981a RK |
123 | /* Return the mode for data of a given size SIZE and mode class CLASS. |
124 | If LIMIT is nonzero, then don't use modes bigger than MAX_FIXED_MODE_SIZE. | |
125 | The value is BLKmode if no other mode is found. */ | |
126 | ||
521f2d6f | 127 | extern enum machine_mode mode_for_size PROTO((unsigned int, enum mode_class, int)); |
c92c981a | 128 | |
27922c13 RH |
129 | /* Similar, but find the smallest mode for a given width. */ |
130 | ||
131 | extern enum machine_mode smallest_mode_for_size PROTO((unsigned int, | |
132 | enum mode_class)); | |
133 | ||
134 | ||
d006aa54 RH |
135 | /* Return an integer mode of the exact same size as the input mode, |
136 | or BLKmode on failure. */ | |
137 | ||
138 | extern enum machine_mode int_mode_for_mode PROTO((enum machine_mode)); | |
139 | ||
fc152a4b RK |
140 | /* Find the best mode to use to access a bit field. */ |
141 | ||
521f2d6f | 142 | extern enum machine_mode get_best_mode PROTO((int, int, int, enum machine_mode, int)); |
fc152a4b RK |
143 | |
144 | /* Determine alignment, 1<=result<=BIGGEST_ALIGNMENT. */ | |
145 | ||
146 | #define GET_MODE_ALIGNMENT(MODE) \ | |
147 | MIN (BIGGEST_ALIGNMENT, \ | |
148 | MAX (1, (GET_MODE_UNIT_SIZE (MODE) * BITS_PER_UNIT))) | |
149 | ||
4a39a918 RK |
150 | /* For each class, get the narrowest mode in that class. */ |
151 | ||
152 | extern enum machine_mode class_narrowest_mode[]; | |
0f41302f | 153 | #define GET_CLASS_NARROWEST_MODE(CLASS) class_narrowest_mode[(int) (CLASS)] |
4a39a918 | 154 | |
6c164c81 RK |
155 | /* Define the integer modes whose sizes are BITS_PER_UNIT and BITS_PER_WORD |
156 | and the mode whose class is Pmode and whose size is POINTER_SIZE. */ | |
4a39a918 RK |
157 | |
158 | extern enum machine_mode byte_mode; | |
159 | extern enum machine_mode word_mode; | |
6c164c81 | 160 | extern enum machine_mode ptr_mode; |
4a39a918 | 161 | |
fc152a4b | 162 | #endif /* not HAVE_MACHINE_MODES */ |