src/hotspot/cpu/zero/assembler_zero.hpp
author lucy
Tue, 21 May 2019 15:51:35 +0200
changeset 54960 e46fe26d7f77
parent 53244 9807daeb47c4
permissions -rw-r--r--
8213084: Rework and enhance Print[Opto]Assembly output Reviewed-by: kvn, thartmann
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/*
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 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
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 * Copyright 2007, 2008, 2009 Red Hat, Inc.
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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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#ifndef CPU_ZERO_ASSEMBLER_ZERO_HPP
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#define CPU_ZERO_ASSEMBLER_ZERO_HPP
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// In normal, CPU-specific ports of HotSpot these two classes are used
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// for generating assembly language.  We don't do any of this in zero,
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// of course, but we do sneak entry points around in CodeBuffers so we
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// generate those here.
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class Assembler : public AbstractAssembler {
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  Assembler(CodeBuffer* code) : AbstractAssembler(code) {}
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 public:
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  void pd_patch_instruction(address branch, address target, const char* file, int line);
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  //---<  calculate length of instruction  >---
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  static unsigned int instr_len(unsigned char *instr) { return 1; }
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  //---<  longest instructions  >---
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  static unsigned int instr_maxlen() { return 1; }
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};
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class MacroAssembler : public Assembler {
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  MacroAssembler(CodeBuffer* code) : Assembler(code) {}
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  void align(int modulus);
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  void bang_stack_with_offset(int offset);
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  bool needs_explicit_null_check(intptr_t offset);
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  bool uses_implicit_null_check(void* address);
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  RegisterOrConstant delayed_value_impl(intptr_t* delayed_value_addr,
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                                        Register tmp, int offset);
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  void advance(int bytes);
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  void store_oop(jobject obj);
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  void store_Metadata(Metadata* obj);
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};
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address ShouldNotCallThisStub();
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address ShouldNotCallThisEntry();
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#endif // CPU_ZERO_ASSEMBLER_ZERO_HPP