95c56a472b
Co-authored-by: Greg Lewis <glewis@eyesbeyond.com> Co-authored-by: Jung-uk Kim <jkim@freebsd.org> Co-authored-by: Christos Zoulas <christos@zoulas.com> Co-authored-by: Landon Fuller <landonf@plausible.coop> Co-authored-by: The FreeBSD Foundation <board@freebsdfoundation.org> Co-authored-by: Michael Franz <mvfranz@gmail.com> Co-authored-by: Roger Hoover <rhoover@apple.com> Co-authored-by: Alexander Strange <astrange@apple.com> Reviewed-by: kvn, twisti, jrose
106 lines
3.3 KiB
C++
106 lines
3.3 KiB
C++
/*
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* Copyright (c) 1997, 2010, 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 __DECODER_HPP
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#define __DECODER_HPP
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#include "memory/allocation.hpp"
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#ifdef _WINDOWS
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#include <windows.h>
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#include <imagehlp.h>
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// functions needed for decoding symbols
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typedef DWORD (WINAPI *pfn_SymSetOptions)(DWORD);
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typedef BOOL (WINAPI *pfn_SymInitialize)(HANDLE, PCTSTR, BOOL);
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typedef BOOL (WINAPI *pfn_SymGetSymFromAddr64)(HANDLE, DWORD64, PDWORD64, PIMAGEHLP_SYMBOL64);
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typedef DWORD (WINAPI *pfn_UndecorateSymbolName)(const char*, char*, DWORD, DWORD);
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#elif defined(__APPLE__)
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#else
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class ElfFile;
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#endif // _WINDOWS
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class Decoder: public StackObj {
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public:
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// status code for decoding native C frame
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enum decoder_status {
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no_error, // successfully decoded frames
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out_of_memory, // out of memory
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file_invalid, // invalid elf file
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file_not_found, // could not found symbol file (on windows), such as jvm.pdb or jvm.map
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helper_not_found, // could not load dbghelp.dll (Windows only)
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helper_func_error, // decoding functions not found (Windows only)
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helper_init_error, // SymInitialize failed (Windows only)
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symbol_not_found // could not find the symbol
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};
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public:
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Decoder() { initialize(); };
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~Decoder() { uninitialize(); };
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static bool can_decode_C_frame_in_vm();
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static void initialize();
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static void uninitialize();
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#ifdef _WINDOWS
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static decoder_status decode(address addr, char *buf, int buflen, int *offset);
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#else
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static decoder_status decode(address addr, const char* filepath, char *buf, int buflen, int *offset);
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#endif
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static bool demangle(const char* symbol, char *buf, int buflen);
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static decoder_status get_status() { return _decoder_status; };
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#if !defined(_WINDOWS) && !defined(__APPLE__)
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private:
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static ElfFile* get_elf_file(const char* filepath);
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#endif // _WINDOWS
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private:
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static decoder_status _decoder_status;
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static bool _initialized;
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#ifdef _WINDOWS
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static HMODULE _dbghelp_handle;
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static bool _can_decode_in_vm;
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static pfn_SymGetSymFromAddr64 _pfnSymGetSymFromAddr64;
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static pfn_UndecorateSymbolName _pfnUndecorateSymbolName;
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#elif __APPLE__
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#else
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static ElfFile* _opened_elf_files;
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#endif // _WINDOWS
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};
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#endif // __DECODER_HPP
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