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Prevent use of linux-x64 binaries with v1 microarchitecture

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Lovell Fuller
2025-03-19 17:24:46 +00:00
parent d419aba76d
commit 3fd818c4b5
5 changed files with 31 additions and 2 deletions
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17
src/utilities.cc
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@@ -267,3 +267,20 @@ Napi::Value _isUsingJemalloc(const Napi::CallbackInfo& info) {
return Napi::Boolean::New(env, false);
}
#endif
#if defined(__GNUC__) && defined(__x86_64__)
// Are SSE 4.2 intrinsics available at runtime?
Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
unsigned int eax, ebx, ecx, edx;
__asm__ __volatile__("cpuid"
: "=a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx)
: "a"(1));
return Napi::Boolean::New(env, (ecx & 1U << 20) != 0);
}
#else
Napi::Value _isUsingX64V2(const Napi::CallbackInfo& info) {
Napi::Env env = info.Env();
return Napi::Boolean::New(env, false);
}
#endif