100 lines
3.1 KiB
C
100 lines
3.1 KiB
C
#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
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/* C99 / C++11 and above: rely on va_copy() which is required. */
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#define DUK_VA_COPY(dest,src) va_copy(dest,src)
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#else
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/* GCC: assume we have __va_copy() in non-C99 mode. */
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#define DUK_VA_COPY(dest,src) __va_copy(dest,src)
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#endif
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#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 20500L) && (DUK_F_GCC_VERSION < 50000L)
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/* Since gcc-2.5.
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*
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* Disabled temporarily in GCC 5+ because of an unresolved noreturn-related
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* issue: https://github.com/svaarala/duktape/issues/2155.
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*/
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#define DUK_NORETURN(decl) decl __attribute__((noreturn))
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#endif
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#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L)
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/* Since gcc-4.5. */
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#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0)
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#endif
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#define DUK_USE_BRANCH_HINTS
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#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L)
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/* GCC: test not very accurate; enable only in relatively recent builds
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* because of bugs in gcc-4.4 (http://lists.debian.org/debian-gcc/2010/04/msg00000.html)
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*/
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#define DUK_LIKELY(x) __builtin_expect((x), 1)
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#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
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#endif
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/* XXX: equivalent of clang __builtin_unpredictable? */
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#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \
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defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 30101)
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#define DUK_NOINLINE __attribute__((noinline))
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#define DUK_INLINE inline
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#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
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#endif
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#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \
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defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40300)
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#define DUK_HOT __attribute__((hot))
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#define DUK_COLD __attribute__((cold))
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#endif
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#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS)
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#snippet "msvc_visibility.h.in"
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#elif defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40000)
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#snippet "gcc_clang_visibility.h.in"
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#endif
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#if defined(DUK_F_MINGW)
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#if defined(DUK_F_CPP)
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#define DUK_USE_COMPILER_STRING "mingw++"
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#else
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#define DUK_USE_COMPILER_STRING "mingw"
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#endif
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#else
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#if defined(DUK_F_CPP)
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#define DUK_USE_COMPILER_STRING "g++"
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#else
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#define DUK_USE_COMPILER_STRING "gcc"
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#endif
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#endif
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#undef DUK_USE_VARIADIC_MACROS
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#if defined(DUK_F_C99) || (defined(DUK_F_CPP11) && defined(__GNUC__))
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#define DUK_USE_VARIADIC_MACROS
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#endif
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#define DUK_USE_UNION_INITIALIZERS
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#undef DUK_USE_FLEX_C99
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#undef DUK_USE_FLEX_ZEROSIZE
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#undef DUK_USE_FLEX_ONESIZE
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#if defined(DUK_F_C99)
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#define DUK_USE_FLEX_C99
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#else
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#define DUK_USE_FLEX_ZEROSIZE
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#endif
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/* Since 4.6 one can '#pragma GCC diagnostic push/pop'. */
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#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40600)
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#define DUK_USE_GCC_PRAGMAS
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#else
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#undef DUK_USE_GCC_PRAGMAS
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#endif
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#define DUK_USE_PACK_GCC_ATTR
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/* Availability varies based on platform (between GCC 4.4 and 4.8), and there
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* are apparently some bugs in GCC 4.x. Check for GCC 5.0 before enabling
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* these to be safe.
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*/
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#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 50000L)
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#define DUK_BSWAP64(x) ((duk_uint64_t) __builtin_bswap64((duk_uint64_t) (x)))
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#define DUK_BSWAP32(x) ((duk_uint32_t) __builtin_bswap32((duk_uint32_t) (x)))
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#define DUK_BSWAP16(x) ((duk_uint16_t) __builtin_bswap16((duk_uint16_t) (x)))
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#endif
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