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8011102: Clear AVX registers after return from JNI call

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Execute vzeroupper instruction after JNI call and on exits in jit compiled code which use 256bit vectors.

Reviewed-by: roland
This commit is contained in:
Vladimir Kozlov 2013-04-03 11:12:57 -07:00
parent 5b838d4ce1
commit 88f70d8026
15 changed files with 179 additions and 186 deletions
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21
hotspot/src/cpu/x86/vm/cppInterpreter_x86.cpp
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@ -1299,25 +1299,8 @@ address InterpreterGenerator::generate_native_entry(bool synchronized) {
__ push(rdx);
#endif // _LP64
// Either restore the MXCSR register after returning from the JNI Call
// or verify that it wasn't changed.
if (VM_Version::supports_sse()) {
if (RestoreMXCSROnJNICalls) {
__ ldmxcsr(ExternalAddress(StubRoutines::addr_mxcsr_std()));
}
else if (CheckJNICalls ) {
__ call(RuntimeAddress(StubRoutines::x86::verify_mxcsr_entry()));
}
}
#ifndef _LP64
// Either restore the x87 floating pointer control word after returning
// from the JNI call or verify that it wasn't changed.
if (CheckJNICalls) {
__ call(RuntimeAddress(StubRoutines::x86::verify_fpu_cntrl_wrd_entry()));
}
#endif // _LP64
// Verify or restore cpu control state after JNI call
__ restore_cpu_control_state_after_jni();
// change thread state
__ movl(Address(thread, JavaThread::thread_state_offset()), _thread_in_native_trans);