GCC_Linux_Platform.h

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#ifndef IMT_BASE_CORE_PLATFORM_GCC_LINUX_PLATFORM_H
#define IMT_BASE_CORE_PLATFORM_GCC_LINUX_PLATFORM_H
 
// Platform specific includes
#include <cassert>
#include <climits>
#include <cstddef>
#include <cstdint>
#include <cstdio>
#include <cstring>
#include <float.h>
#include <string.h>
 
// GCC Specific keywords used by Imt.Base framework
#define __DATAFLOW_ASM(x) asm volatile(x)
#define __DATAFLOW_ROOT // no supported in GNU
#if defined(__ARM6T2__)
// Even though __builtin_clz produces a CLZ instruction on ARM, formally
// __builtin_clz(0) is undefined behaviour, so handle this case specially.
// This guarantees ARM-compatible results if happening to compile on a non-ARM
// target, and ensures the compiler doesn't decide to activate any
// optimisations using the logic "value was passed to __builtin_clz, so it
// is non-zero".
// ARM GCC 7.3 and possibly earlier will optimise this test away, leaving a
// single CLZ instruction.
#define __DATAFLOW_CLZ(x) ((x == 0U ? 32U : __builtin_clz(x)))
#else
#include <Imt.Base.Core.Platform/CountLeadingZeros.h>
#define __DATAFLOW_CLZ(x) ::imt::base::core::platform::countLeadingZeros(x)
#endif
 
#endif // IMT_BASE_CORE_PLATFORM_GCC_LINUX_PLATFORM_H