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PojavLauncherTeam
GitHub Repository: PojavLauncherTeam/mobile
 Path: blob/master/src/hotspot/cpu/ppc/c2_safepointPollStubTable_ppc.cpp
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/*

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 * Copyright (c) 2020, 2021, Oracle and/or its affiliates. All rights reserved.

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 * Copyright (c) 2021 SAP SE. All rights reserved.

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * This code is free software; you can redistribute it and/or modify it

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 * under the terms of the GNU General Public License version 2 only, as

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 * published by the Free Software Foundation.

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 *

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 * This code is distributed in the hope that it will be useful, but WITHOUT

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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

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 * version 2 for more details (a copy is included in the LICENSE file that

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 * accompanied this code).

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 *

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 * You should have received a copy of the GNU General Public License version

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 * 2 along with this work; if not, write to the Free Software Foundation,

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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

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 *

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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 * or visit www.oracle.com if you need additional information or have any

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 * questions.

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 *

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 */

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#include "precompiled.hpp"

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#include "macroAssembler_ppc.inline.hpp"

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#include "opto/compile.hpp"

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#include "opto/node.hpp"

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#include "opto/output.hpp"

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#include "runtime/sharedRuntime.hpp"

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#define __ masm.

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void C2SafepointPollStubTable::emit_stub_impl(MacroAssembler& masm, C2SafepointPollStub* entry) const {

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  assert(SharedRuntime::polling_page_return_handler_blob() != NULL,

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         "polling page return stub not created yet");

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  address stub = SharedRuntime::polling_page_return_handler_blob()->entry_point();

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  __ bind(entry->_stub_label);

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  // Using pc relative address computation.

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  {

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    Label next_pc;

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    __ bl(next_pc);

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    __ bind(next_pc);

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  }

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  int current_offset = __ offset();

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  // Code size should not depend on offset: see _stub_size computation in output.cpp

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  __ load_const32(R12, entry->_safepoint_offset - current_offset);

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  __ mflr(R0);

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  __ add(R12, R12, R0);

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  __ std(R12, in_bytes(JavaThread::saved_exception_pc_offset()), R16_thread);

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  __ add_const_optimized(R0, R29_TOC, MacroAssembler::offset_to_global_toc(stub));

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  __ mtctr(R0);

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  __ bctr();

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}

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#undef __

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