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comparison gcc/hwint.h @ 0:a06113de4d67

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author kent <kent@cr.ie.u-ryukyu.ac.jp>
date Fri, 17 Jul 2009 14:47:48 +0900
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children 77e2b8dfacca
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-1:000000000000 0:a06113de4d67
1 /* HOST_WIDE_INT definitions for the GNU compiler.
2 Copyright (C) 1998, 2002, 2004, 2008 Free Software Foundation, Inc.
3
4 This file is part of GCC.
5
6 Provide definitions for macros which depend on HOST_BITS_PER_INT
7 and HOST_BITS_PER_LONG. */
8
9 #ifndef GCC_HWINT_H
10 #define GCC_HWINT_H
11
12 /* This describes the machine the compiler is hosted on. */
13 #define HOST_BITS_PER_CHAR CHAR_BIT
14 #define HOST_BITS_PER_SHORT (CHAR_BIT * SIZEOF_SHORT)
15 #define HOST_BITS_PER_INT (CHAR_BIT * SIZEOF_INT)
16 #define HOST_BITS_PER_LONG (CHAR_BIT * SIZEOF_LONG)
17
18 /* The string that should be inserted into a printf style format to
19 indicate a "long long" operand. */
20 #ifndef HOST_LONG_LONG_FORMAT
21 #define HOST_LONG_LONG_FORMAT "ll"
22 #endif
23
24 /* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but
25 GCC_VERSION >= 3000, assume this is the second or later stage of a
26 bootstrap, we do have long long, and it's 64 bits. (This is
27 required by C99; we do have some ports that violate that assumption
28 but they're all cross-compile-only.) Just in case, force a
29 constraint violation if that assumption is incorrect. */
30 #if !defined HAVE_LONG_LONG
31 # if GCC_VERSION >= 3000
32 # define HAVE_LONG_LONG 1
33 # define SIZEOF_LONG_LONG 8
34 extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
35 # endif
36 #endif
37
38 #ifdef HAVE_LONG_LONG
39 # define HOST_BITS_PER_LONGLONG (CHAR_BIT * SIZEOF_LONG_LONG)
40 #endif
41 #ifdef HAVE___INT64
42 # define HOST_BITS_PER___INT64 (CHAR_BIT * SIZEOF___INT64)
43 #endif
44
45 /* Set HOST_WIDE_INT. This should be the widest efficient host
46 integer type. It can be 32 or 64 bits, except that if we are
47 targeting a machine with 64-bit size_t then it has to be 64 bits.
48
49 With a sane ABI, 'long' is the largest efficient host integer type.
50 Thus, we use that unless we have to use 'long long' or '__int64'
51 because we're targeting a 64-bit machine from a 32-bit host. */
52
53 #if HOST_BITS_PER_LONG >= 64 || !defined NEED_64BIT_HOST_WIDE_INT
54 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
55 # define HOST_WIDE_INT long
56 #else
57 # if HOST_BITS_PER_LONGLONG >= 64
58 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONGLONG
59 # define HOST_WIDE_INT long long
60 # else
61 # if HOST_BITS_PER___INT64 >= 64
62 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER___INT64
63 # define HOST_WIDE_INT __int64
64 # else
65 #error "Unable to find a suitable type for HOST_WIDE_INT"
66 # endif
67 # endif
68 #endif
69
70 /* Various printf format strings for HOST_WIDE_INT. */
71
72 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
73 # define HOST_WIDE_INT_PRINT "l"
74 # define HOST_WIDE_INT_PRINT_C "L"
75 /* 'long' might be 32 or 64 bits, and the number of leading zeroes
76 must be tweaked accordingly. */
77 # if HOST_BITS_PER_WIDE_INT == 64
78 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
79 # else
80 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
81 # endif
82 #else
83 # define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT
84 # define HOST_WIDE_INT_PRINT_C "LL"
85 /* We can assume that 'long long' is at least 64 bits. */
86 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX \
87 "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
88 #endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */
89
90 #define HOST_WIDE_INT_PRINT_DEC "%" HOST_WIDE_INT_PRINT "d"
91 #define HOST_WIDE_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC HOST_WIDE_INT_PRINT_C
92 #define HOST_WIDE_INT_PRINT_UNSIGNED "%" HOST_WIDE_INT_PRINT "u"
93 #define HOST_WIDE_INT_PRINT_HEX "0x%" HOST_WIDE_INT_PRINT "x"
94
95 /* Set HOST_WIDEST_INT. This is a 64-bit type unless the compiler
96 in use has no 64-bit type at all; in that case it's 32 bits. */
97
98 #if HOST_BITS_PER_WIDE_INT >= 64 \
99 || (HOST_BITS_PER_LONGLONG < 64 && HOST_BITS_PER___INT64 < 64)
100 # define HOST_WIDEST_INT HOST_WIDE_INT
101 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_WIDE_INT
102 # define HOST_WIDEST_INT_PRINT_DEC HOST_WIDE_INT_PRINT_DEC
103 # define HOST_WIDEST_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC_C
104 # define HOST_WIDEST_INT_PRINT_UNSIGNED HOST_WIDE_INT_PRINT_UNSIGNED
105 # define HOST_WIDEST_INT_PRINT_HEX HOST_WIDE_INT_PRINT_HEX
106 # define HOST_WIDEST_INT_PRINT_DOUBLE_HEX HOST_WIDE_INT_PRINT_DOUBLE_HEX
107 #else
108 # if HOST_BITS_PER_LONGLONG >= 64
109 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
110 # define HOST_WIDEST_INT long long
111 # else
112 # if HOST_BITS_PER___INT64 >= 64
113 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER___INT64
114 # define HOST_WIDEST_INT __int64
115 # else
116 #error "This line should be impossible to reach"
117 # endif
118 # endif
119 # define HOST_WIDEST_INT_PRINT_DEC "%" HOST_LONG_LONG_FORMAT "d"
120 # define HOST_WIDEST_INT_PRINT_DEC_C "%" HOST_LONG_LONG_FORMAT "dLL"
121 # define HOST_WIDEST_INT_PRINT_UNSIGNED "%" HOST_LONG_LONG_FORMAT "u"
122 # define HOST_WIDEST_INT_PRINT_HEX "0x%" HOST_LONG_LONG_FORMAT "x"
123 # define HOST_WIDEST_INT_PRINT_DOUBLE_HEX \
124 "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x"
125 #endif
126
127 /* Define HOST_WIDEST_FAST_INT to the widest integer type supported
128 efficiently in hardware. (That is, the widest integer type that fits
129 in a hardware register.) Normally this is "long" but on some hosts it
130 should be "long long" or "__int64". This is no convenient way to
131 autodetect this, so such systems must set a flag in config.host; see there
132 for details. */
133
134 #ifdef USE_LONG_LONG_FOR_WIDEST_FAST_INT
135 # ifdef HAVE_LONG_LONG
136 # define HOST_WIDEST_FAST_INT long long
137 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONGLONG
138 # elif defined (HAVE___INT64)
139 # define HOST_WIDEST_FAST_INT __int64
140 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER___INT64
141 # else
142 # error "Your host said it wanted to use long long or __int64 but neither"
143 # error "exist"
144 # endif
145 #else
146 # define HOST_WIDEST_FAST_INT long
147 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONG
148 #endif
149
150 #endif /* ! GCC_HWINT_H */