131 lines
5.3 KiB
C++
131 lines
5.3 KiB
C++
/*
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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
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