hg: shenandoah/jdk: Cherry-pick: 8202676: AArch64: Missing enter/leave around barrier leads to infinite loop

[roman at kennke.org]

Changeset: 8d2495708dc0
Author:    rkennke
Date:      2018-05-06 00:42 +0200
URL:       http://hg.openjdk.java.net/shenandoah/jdk/rev/8d2495708dc0

Cherry-pick: 8202676: AArch64: Missing enter/leave around barrier leads to infinite loop

! src/hotspot/cpu/aarch64/gc/g1/g1BarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/shared/barrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/templateInterpreterGenerator_aarch64.cpp