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 */ 151
