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diff 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
line wrap: on
line diff
--- a/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Tue Apr 02 09:30:07 2013 +0200
+++ b/src/cpu/x86/vm/sharedRuntime_x86_64.cpp	Wed Apr 03 11:12:57 2013 -0700
@@ -2315,16 +2315,8 @@
 
   __ call(RuntimeAddress(native_func));
 
-    // Either restore the MXCSR register after returning from the JNI Call
-    // or verify that it wasn't changed.
-    if (RestoreMXCSROnJNICalls) {
-      __ ldmxcsr(ExternalAddress(StubRoutines::x86::mxcsr_std()));
-
-    }
-    else if (CheckJNICalls ) {
-      __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, StubRoutines::x86::verify_mxcsr_entry())));
-    }
-
+  // Verify or restore cpu control state after JNI call
+  __ restore_cpu_control_state_after_jni();
 
   // Unpack native results.
   switch (ret_type) {