1 /* HOST_WIDE_INT definitions for the GNU compiler. 2 Copyright (C) 1998, 2002, 2004, 2008, 2009 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" operand. */ 20 #ifndef HOST_LONG_FORMAT 21 #define HOST_LONG_FORMAT "l" 22 #endif 23 24 /* The string that should be inserted into a printf style format to 25 indicate a "long long" operand. */ 26 #ifndef HOST_LONG_LONG_FORMAT 27 #define HOST_LONG_LONG_FORMAT "ll" 28 #endif 29 30 /* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but 31 GCC_VERSION >= 3000, assume this is the second or later stage of a 32 bootstrap, we do have long long, and it's 64 bits. (This is 33 required by C99; we do have some ports that violate that assumption 34 but they're all cross-compile-only.) Just in case, force a 35 constraint violation if that assumption is incorrect. */ 36 #if !defined HAVE_LONG_LONG 37 # if GCC_VERSION >= 3000 38 # define HAVE_LONG_LONG 1 39 # define SIZEOF_LONG_LONG 8 40 extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1]; 41 # endif 42 #endif 43 44 #ifdef HAVE_LONG_LONG 45 # define HOST_BITS_PER_LONGLONG (CHAR_BIT * SIZEOF_LONG_LONG) 46 #endif 47 #ifdef HAVE___INT64 48 # define HOST_BITS_PER___INT64 (CHAR_BIT * SIZEOF___INT64) 49 #endif 50 51 /* Set HOST_WIDE_INT. This should be the widest efficient host 52 integer type. It can be 32 or 64 bits, except that if we are 53 targeting a machine with 64-bit size_t then it has to be 64 bits. 54 55 With a sane ABI, 'long' is the largest efficient host integer type. 56 Thus, we use that unless we have to use 'long long' or '__int64' 57 because we're targeting a 64-bit machine from a 32-bit host. */ 58 59 #if HOST_BITS_PER_LONG >= 64 || !defined NEED_64BIT_HOST_WIDE_INT 60 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG 61 # define HOST_WIDE_INT long 62 #else 63 # if HOST_BITS_PER_LONGLONG >= 64 64 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONGLONG 65 # define HOST_WIDE_INT long long 66 # else 67 # if HOST_BITS_PER___INT64 >= 64 68 # define HOST_BITS_PER_WIDE_INT HOST_BITS_PER___INT64 69 # define HOST_WIDE_INT __int64 70 # else 71 #error "Unable to find a suitable type for HOST_WIDE_INT" 72 # endif 73 # endif 74 #endif 75 76 /* Various printf format strings for HOST_WIDE_INT. */ 77 78 #if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG 79 # define HOST_WIDE_INT_PRINT HOST_LONG_FORMAT 80 # define HOST_WIDE_INT_PRINT_C "L" 81 # define HOST_WIDE_INT_CONSTANT(x) x ## L 82 /* 'long' might be 32 or 64 bits, and the number of leading zeroes 83 must be tweaked accordingly. */ 84 # if HOST_BITS_PER_WIDE_INT == 64 85 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ 86 "0x%" HOST_LONG_FORMAT "x%016" HOST_LONG_FORMAT "x" 87 # else 88 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ 89 "0x%" HOST_LONG_FORMAT "x%08" HOST_LONG_FORMAT "x" 90 # endif 91 #else 92 # define HOST_WIDE_INT_PRINT HOST_LONG_LONG_FORMAT 93 # define HOST_WIDE_INT_PRINT_C "LL" 94 # define HOST_WIDE_INT_CONSTANT(x) x ## LL 95 /* We can assume that 'long long' is at least 64 bits. */ 96 # define HOST_WIDE_INT_PRINT_DOUBLE_HEX \ 97 "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x" 98 #endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */ 99 100 #define HOST_WIDE_INT_PRINT_DEC "%" HOST_WIDE_INT_PRINT "d" 101 #define HOST_WIDE_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC HOST_WIDE_INT_PRINT_C 102 #define HOST_WIDE_INT_PRINT_UNSIGNED "%" HOST_WIDE_INT_PRINT "u" 103 #define HOST_WIDE_INT_PRINT_HEX "0x%" HOST_WIDE_INT_PRINT "x" 104 105 /* Set HOST_WIDEST_INT. This is a 64-bit type unless the compiler 106 in use has no 64-bit type at all; in that case it's 32 bits. */ 107 108 #if HOST_BITS_PER_WIDE_INT >= 64 \ 109 || (HOST_BITS_PER_LONGLONG < 64 && HOST_BITS_PER___INT64 < 64) 110 # define HOST_WIDEST_INT HOST_WIDE_INT 111 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_WIDE_INT 112 # define HOST_WIDEST_INT_PRINT HOST_WIDE_INT_PRINT 113 # define HOST_WIDEST_INT_PRINT_DEC HOST_WIDE_INT_PRINT_DEC 114 # define HOST_WIDEST_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC_C 115 # define HOST_WIDEST_INT_PRINT_UNSIGNED HOST_WIDE_INT_PRINT_UNSIGNED 116 # define HOST_WIDEST_INT_PRINT_HEX HOST_WIDE_INT_PRINT_HEX 117 # define HOST_WIDEST_INT_PRINT_DOUBLE_HEX HOST_WIDE_INT_PRINT_DOUBLE_HEX 118 #else 119 # if HOST_BITS_PER_LONGLONG >= 64 120 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG 121 # define HOST_WIDEST_INT long long 122 # else 123 # if HOST_BITS_PER___INT64 >= 64 124 # define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER___INT64 125 # define HOST_WIDEST_INT __int64 126 # else 127 #error "This line should be impossible to reach" 128 # endif 129 # endif 130 # define HOST_WIDEST_INT_PRINT HOST_LONG_LONG_FORMAT 131 # define HOST_WIDEST_INT_PRINT_DEC "%" HOST_LONG_LONG_FORMAT "d" 132 # define HOST_WIDEST_INT_PRINT_DEC_C "%" HOST_LONG_LONG_FORMAT "dLL" 133 # define HOST_WIDEST_INT_PRINT_UNSIGNED "%" HOST_LONG_LONG_FORMAT "u" 134 # define HOST_WIDEST_INT_PRINT_HEX "0x%" HOST_LONG_LONG_FORMAT "x" 135 # define HOST_WIDEST_INT_PRINT_DOUBLE_HEX \ 136 "0x%" HOST_LONG_LONG_FORMAT "x%016" HOST_LONG_LONG_FORMAT "x" 137 #endif 138 139 /* Define HOST_WIDEST_FAST_INT to the widest integer type supported 140 efficiently in hardware. (That is, the widest integer type that fits 141 in a hardware register.) Normally this is "long" but on some hosts it 142 should be "long long" or "__int64". This is no convenient way to 143 autodetect this, so such systems must set a flag in config.host; see there 144 for details. */ 145 146 #ifdef USE_LONG_LONG_FOR_WIDEST_FAST_INT 147 # ifdef HAVE_LONG_LONG 148 # define HOST_WIDEST_FAST_INT long long 149 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONGLONG 150 # elif defined (HAVE___INT64) 151 # define HOST_WIDEST_FAST_INT __int64 152 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER___INT64 153 # else 154 # error "Your host said it wanted to use long long or __int64 but neither" 155 # error "exist" 156 # endif 157 #else 158 # define HOST_WIDEST_FAST_INT long 159 # define HOST_BITS_PER_WIDEST_FAST_INT HOST_BITS_PER_LONG 160 #endif 161 162 #endif /* ! GCC_HWINT_H */ 163