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120 lines
4.4 KiB
C
120 lines
4.4 KiB
C
/* HOST_WIDE_INT definitions for the GNU compiler.
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Copyright (C) 1998, 2002 Free Software Foundation, Inc.
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This file is part of GCC.
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Provide definitions for macros which depend on HOST_BITS_PER_INT
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and HOST_BITS_PER_LONG. */
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#ifndef GCC_HWINT_H
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#define GCC_HWINT_H
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/* This describes the machine the compiler is hosted on. */
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#define HOST_BITS_PER_CHAR CHAR_BIT
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#define HOST_BITS_PER_SHORT (CHAR_BIT * SIZEOF_SHORT)
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#define HOST_BITS_PER_INT (CHAR_BIT * SIZEOF_INT)
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#define HOST_BITS_PER_LONG (CHAR_BIT * SIZEOF_LONG)
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/* If HAVE_LONG_LONG and SIZEOF_LONG_LONG aren't defined, but
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GCC_VERSION >= 3000, assume this is the second or later stage of a
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bootstrap, we do have long long, and it's 64 bits. (This is
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required by C99; we do have some ports that violate that assumption
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but they're all cross-compile-only.) Just in case, force a
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constraint violation if that assumption is incorrect. */
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#if !defined HAVE_LONG_LONG
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# if GCC_VERSION >= 3000
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# define HAVE_LONG_LONG 1
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# define SIZEOF_LONG_LONG 8
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extern char sizeof_long_long_must_be_8[sizeof(long long) == 8 ? 1 : -1];
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# endif
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#endif
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#ifdef HAVE_LONG_LONG
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# define HOST_BITS_PER_LONGLONG (CHAR_BIT * SIZEOF_LONG_LONG)
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#endif
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#ifdef HAVE___INT64
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# define HOST_BITS_PER___INT64 (CHAR_BIT * SIZEOF___INT64)
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#endif
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/* Set HOST_WIDE_INT. This should be the widest efficient host
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integer type. It can be 32 or 64 bits, except that if we are
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targeting a machine with 64-bit size_t then it has to be 64 bits.
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With a sane ABI, 'long' is the largest efficient host integer type.
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Thus, we use that unless we have to use 'long long' or '__int64'
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because we're targeting a 64-bit machine from a 32-bit host. */
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#if HOST_BITS_PER_LONG >= 64 || !defined NEED_64BIT_HOST_WIDE_INT
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# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONG
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# define HOST_WIDE_INT long
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#else
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# if HOST_BITS_PER_LONGLONG >= 64
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# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER_LONGLONG
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# define HOST_WIDE_INT long long
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# else
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# if HOST_BITS_PER___INT64 >= 64
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# define HOST_BITS_PER_WIDE_INT HOST_BITS_PER___INT64
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# define HOST_WIDE_INT __int64
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# else
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#error "Unable to find a suitable type for HOST_WIDE_INT"
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# endif
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# endif
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#endif
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/* Various printf format strings for HOST_WIDE_INT. */
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#if HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG
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# define HOST_WIDE_INT_PRINT "l"
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# define HOST_WIDE_INT_PRINT_C "L"
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/* 'long' might be 32 or 64 bits, and the number of leading zeroes
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must be tweaked accordingly. */
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# if HOST_BITS_PER_WIDE_INT == 64
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# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%016lx"
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# else
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# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%lx%08lx"
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# endif
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#else
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# define HOST_WIDE_INT_PRINT "ll"
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# define HOST_WIDE_INT_PRINT_C "LL"
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/* We can assume that 'long long' is at least 64 bits. */
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# define HOST_WIDE_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
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#endif /* HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG */
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#define HOST_WIDE_INT_PRINT_DEC "%" HOST_WIDE_INT_PRINT "d"
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#define HOST_WIDE_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC HOST_WIDE_INT_PRINT_C
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#define HOST_WIDE_INT_PRINT_UNSIGNED "%" HOST_WIDE_INT_PRINT "u"
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#define HOST_WIDE_INT_PRINT_HEX "0x%" HOST_WIDE_INT_PRINT "x"
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/* Set HOST_WIDEST_INT. This is a 64-bit type unless the compiler
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in use has no 64-bit type at all; in that case it's 32 bits. */
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#if HOST_BITS_PER_WIDE_INT >= 64 \
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|| (HOST_BITS_PER_LONGLONG < 64 && HOST_BITS_PER___INT64 < 64)
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# define HOST_WIDEST_INT HOST_WIDE_INT
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# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_WIDE_INT
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# define HOST_WIDEST_INT_PRINT_DEC HOST_WIDE_INT_PRINT_DEC
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# define HOST_WIDEST_INT_PRINT_DEC_C HOST_WIDE_INT_PRINT_DEC_C
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# define HOST_WIDEST_INT_PRINT_UNSIGNED HOST_WIDE_INT_PRINT_UNSIGNED
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# define HOST_WIDEST_INT_PRINT_HEX HOST_WIDE_INT_PRINT_HEX
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# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX HOST_WIDE_INT_PRINT_DOUBLE_HEX
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#else
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# if HOST_BITS_PER_LONGLONG >= 64
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# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER_LONGLONG
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# define HOST_WIDEST_INT long long
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# else
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# if HOST_BITS_PER___INT64 >= 64
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# define HOST_BITS_PER_WIDEST_INT HOST_BITS_PER___INT64
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# define HOST_WIDEST_INT __int64
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# else
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#error "This line should be impossible to reach"
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# endif
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# endif
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# define HOST_WIDEST_INT_PRINT_DEC "%lld"
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# define HOST_WIDEST_INT_PRINT_DEC_C "%lldLL"
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# define HOST_WIDEST_INT_PRINT_UNSIGNED "%llu"
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# define HOST_WIDEST_INT_PRINT_HEX "0x%llx"
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# define HOST_WIDEST_INT_PRINT_DOUBLE_HEX "0x%llx%016llx"
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#endif
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#endif /* ! GCC_HWINT_H */
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