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8229971: Arm32: implementation for Thread-local handshakes

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Reviewed-by: rehn, dsamersoff
This commit is contained in:
Boris Ulasevich 2020-01-30 10:26:56 +03:00
parent c4b708b255
commit d65f9665df
10 changed files with 110 additions and 56 deletions
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18
src/hotspot/cpu/arm/templateInterpreterGenerator_arm.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2008, 2020, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -959,8 +959,6 @@ address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
// Force this write out before the read below
__ membar(MacroAssembler::StoreLoad, Rtemp);
__ ldr_global_s32(Rtemp, SafepointSynchronize::address_of_state());
// Protect the return value in the interleaved code: save it to callee-save registers.
__ mov(Rsaved_result_lo, R0);
__ mov(Rsaved_result_hi, R1);
@ -973,12 +971,16 @@ address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
#endif // __ABI_HARD__
{
__ ldr_u32(R3, Address(Rthread, JavaThread::suspend_flags_offset()));
__ cmp(Rtemp, SafepointSynchronize::_not_synchronized);
__ cond_cmp(R3, 0, eq);
Label call, skip_call;
__ safepoint_poll(Rtemp, call);
__ ldr_u32(R3, Address(Rthread, JavaThread::suspend_flags_offset()));
__ cmp(R3, 0);
__ b(skip_call, eq);
__ bind(call);
__ mov(R0, Rthread);
__ call(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans), relocInfo::none);
__ bind(skip_call);
__ mov(R0, Rthread, ne);
__ call(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans), relocInfo::none, ne);
#if R9_IS_SCRATCHED
__ restore_method();
#endif