author | vlivanov |
Tue, 26 Nov 2019 16:09:21 +0300 | |
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/* |
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* Copyright (c) 2008, 2019, Oracle and/or its affiliates. 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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#ifndef SHARE_COMPILER_DISASSEMBLER_HPP |
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#define SHARE_COMPILER_DISASSEMBLER_HPP |
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#include "utilities/globalDefinitions.hpp" |
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#include "asm/assembler.hpp" |
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#include "asm/codeBuffer.hpp" |
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#include "compiler/abstractDisassembler.hpp" |
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#include "runtime/globals.hpp" |
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#include "utilities/macros.hpp" |
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class decode_env; |
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// The disassembler prints out assembly code annotated |
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// with Java specific information. |
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// Disassembler inherits from AbstractDisassembler |
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class Disassembler : public AbstractDisassembler { |
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friend class decode_env; |
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private: |
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// this is the type of the dll entry point: |
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typedef void* (*decode_func_virtual)(uintptr_t start_va, uintptr_t end_va, |
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unsigned char* buffer, uintptr_t length, |
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void* (*event_callback)(void*, const char*, void*), |
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void* event_stream, |
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int (*printf_callback)(void*, const char*, ...), |
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void* printf_stream, |
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const char* options, |
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int newline); |
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// this is the type of the dll entry point for old version: |
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typedef void* (*decode_func)(void* start_va, void* end_va, |
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void* (*event_callback)(void*, const char*, void*), |
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void* event_stream, |
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int (*printf_callback)(void*, const char*, ...), |
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void* printf_stream, |
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const char* options); |
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// points to the library. |
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static void* _library; |
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// bailout |
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static bool _tried_to_load_library; |
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static bool _library_usable; |
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// points to the decode function. |
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static decode_func_virtual _decode_instructions_virtual; |
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static decode_func _decode_instructions; |
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// tries to load library and return whether it succeeded. |
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// Allow (diagnostic) output redirection. |
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// No output at all if stream is NULL. Can be overridden |
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// with -Verbose flag, in which case output goes to tty. |
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static bool load_library(outputStream* st = NULL); |
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// Check if the two addresses are on the same page. |
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static bool is_same_page(address a1, address a2) { |
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return (((uintptr_t)a1 ^ (uintptr_t)a2) & (~0x0fffUL)) == 0L; |
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} |
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// Machine dependent stuff |
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#include CPU_HEADER(disassembler) |
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public: |
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// We can always decode code blobs. |
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// Either we have a disassembler library available (successfully loaded) |
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// or we will resort to the abstract disassembler. This method informs |
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// about which decoding format is used. |
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// We can also enforce using the abstract disassembler. |
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static bool is_abstract() { |
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if (!_tried_to_load_library /* && !UseAbstractDisassembler */) { |
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load_library(); |
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} |
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return ! _library_usable /* || UseAbstractDisassembler */; // Not available until DecodeErrorFile is supported. |
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} |
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// Check out if we are doing a live disassembly or a post-mortem |
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// disassembly where the binary data was loaded from a hs_err file. |
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static bool is_decode_error_file() { |
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// Activate once post-mortem disassembly (from hs-err file) is available. |
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#if 0 |
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return DecodeErrorFile && (strlen(DecodeErrorFile) != 0); |
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#else |
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return false; |
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#endif |
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} |
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// Directly disassemble code buffer. |
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static void decode(CodeBuffer* cb, address start, address end, outputStream* st = NULL); |
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// Directly disassemble code blob. |
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static void decode(CodeBlob *cb, outputStream* st = NULL, CodeStrings c = CodeStrings()); |
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// Directly disassemble nmethod. |
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static void decode(nmethod* nm, outputStream* st = NULL, CodeStrings c = CodeStrings()); |
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// Disassemble an arbitrary memory range. |
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static void decode(address start, address end, outputStream* st = NULL, CodeStrings c = CodeStrings() /* , ptrdiff_t offset */); |
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static void _hook(const char* file, int line, class MacroAssembler* masm); |
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// This functions makes it easy to generate comments in the generated |
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// interpreter code, by riding on the customary __ macro in the interpreter generator. |
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// See templateTable_x86.cpp for an example. |
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template<class T> inline static T* hook(const char* file, int line, T* masm) { |
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if (PrintInterpreter) { |
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_hook(file, line, masm); |
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} |
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return masm; |
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} |
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}; |
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#endif // SHARE_COMPILER_DISASSEMBLER_HPP |