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Invalidate CPU I-cache on Apple Silicon

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Call __builtin___clear_cache() after pthread_jit_write_protect_np() according to https://developer.apple.com/documentation/apple-silicon/porting-just-in-time-compilers-to-apple-silicon
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SChernykh 2022-11-30 10:53:57 +01:00 committed by wowario
parent c55226fd27
commit 607bad48f3
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src/virtual_memory.c
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@ -189,6 +189,7 @@ void setPagesRX(void* ptr, size_t bytes) {
&& MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_11_0 && MAC_OS_X_VERSION_MAX_ALLOWED >= MAC_OS_VERSION_11_0
if (__builtin_available(macOS 11.0, *)) { if (__builtin_available(macOS 11.0, *)) {
pthread_jit_write_protect_np(1); pthread_jit_write_protect_np(1);
__builtin___clear_cache((char*)ptr, ((char*)ptr) + bytes);
} else { } else {
pageProtect(ptr, bytes, PAGE_EXECUTE_READ, &errfunc); pageProtect(ptr, bytes, PAGE_EXECUTE_READ, &errfunc);
} }