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comparison src/cpu/x86/vm/sharedRuntime_x86_64.cpp @ 8873:e961c11b85fe

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8011102: Clear AVX registers after return from JNI call Summary: Execute vzeroupper instruction after JNI call and on exits in jit compiled code which use 256bit vectors. Reviewed-by: roland
author kvn
date Wed, 03 Apr 2013 11:12:57 -0700
parents cd3d6a6b95d9
children b9a918201d47 e7f5651d459c
comparison
equal deleted inserted replaced
8872:53028d751155 8873:e961c11b85fe
2313 // Now set thread in native 2313 // Now set thread in native
2314 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_native); 2314 __ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_native);
2315 2315
2316 __ call(RuntimeAddress(native_func)); 2316 __ call(RuntimeAddress(native_func));
2317 2317
2318 // Either restore the MXCSR register after returning from the JNI Call 2318 // Verify or restore cpu control state after JNI call
2319 // or verify that it wasn't changed. 2319 __ restore_cpu_control_state_after_jni();
2320 if (RestoreMXCSROnJNICalls) {
2321 __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std()));
2322
2323 }
2324 else if (CheckJNICalls ) {
2325 __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry())));
2326 }
2327
2328 2320
2329 // Unpack native results. 2321 // Unpack native results.
2330 switch (ret_type) { 2322 switch (ret_type) {
2331 case T_BOOLEAN: __ c2bool(rax); break; 2323 case T_BOOLEAN: __ c2bool(rax); break;
2332 case T_CHAR : __ movzwl(rax, rax); break; 2324 case T_CHAR : __ movzwl(rax, rax); break;