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src/hotspot/cpu/aarch64/icache_aarch64.hpp

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8248238: Adding Windows support to OpenJDK on AArch64

Summary: Adding Windows support for AArch64

Contributed-by: Ludovic Henry <luhenry@microsoft.com>, Monica Beckwith <monica.beckwith@microsoft.com>
Reviewed-by:

*** 29,38 **** --- 29,47 ---- // Interface for updating the instruction cache. Whenever the VM // modifies code, part of the processor instruction cache potentially // has to be flushed. class ICache : public AbstractICache { + private: + #ifdef _WIN64 + // __builtin___clear_cache is a GCC intrinsic, and is then not available in + // MSVC. Define an equivalent method which calls the right Win32/MSVC + // intrinsic. + static void __builtin___clear_cache(char *start, char *end) { + FlushInstructionCache((HANDLE)GetCurrentProcess(), start, (SIZE_T)(end - start)); + } + #endif public: static void initialize(); static void invalidate_word(address addr) { __builtin___clear_cache((char *)addr, (char *)(addr + 3)); }
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