Mercurial > hg > truffle
view src/os/windows/vm/decoder_windows.cpp @ 16524:a08a58d0736b
[SPARC] Emit compareAndSwap for AtomicInteger and AtomicLong, Removing o7 register from usable ones, as this register is always overwritten, when using Call or JumpAndLink instructions in SPARC, even callee does not overwrite explicitly, implicit exception is defined when doing integer division, parameter constraint narrowed to only register on Unary2Op, Fix SPARCTestOp, as it did a compare instead of an and with condition codes
author | Stefan Anzinger <stefan.anzinger@gmail.com> |
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date | Tue, 15 Jul 2014 19:07:29 -0700 |
parents | 38f750491293 |
children |
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/* * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "prims/jvm.h" #include "runtime/arguments.hpp" #include "decoder_windows.hpp" WindowsDecoder::WindowsDecoder() { _dbghelp_handle = NULL; _can_decode_in_vm = false; _pfnSymGetSymFromAddr64 = NULL; _pfnUndecorateSymbolName = NULL; #ifdef AMD64 _pfnStackWalk64 = NULL; _pfnSymFunctionTableAccess64 = NULL; _pfnSymGetModuleBase64 = NULL; #endif _decoder_status = no_error; initialize(); } void WindowsDecoder::initialize() { if (!has_error() && _dbghelp_handle == NULL) { HMODULE handle = ::LoadLibrary("dbghelp.dll"); if (!handle) { _decoder_status = helper_not_found; return; } _dbghelp_handle = handle; pfn_SymSetOptions _pfnSymSetOptions = (pfn_SymSetOptions)::GetProcAddress(handle, "SymSetOptions"); pfn_SymInitialize _pfnSymInitialize = (pfn_SymInitialize)::GetProcAddress(handle, "SymInitialize"); _pfnSymGetSymFromAddr64 = (pfn_SymGetSymFromAddr64)::GetProcAddress(handle, "SymGetSymFromAddr64"); _pfnUndecorateSymbolName = (pfn_UndecorateSymbolName)::GetProcAddress(handle, "UnDecorateSymbolName"); if (_pfnSymSetOptions == NULL || _pfnSymInitialize == NULL || _pfnSymGetSymFromAddr64 == NULL) { uninitialize(); _decoder_status = helper_func_error; return; } #ifdef AMD64 _pfnStackWalk64 = (pfn_StackWalk64)::GetProcAddress(handle, "StackWalk64"); _pfnSymFunctionTableAccess64 = (pfn_SymFunctionTableAccess64)::GetProcAddress(handle, "SymFunctionTableAccess64"); _pfnSymGetModuleBase64 = (pfn_SymGetModuleBase64)::GetProcAddress(handle, "SymGetModuleBase64"); if (_pfnStackWalk64 == NULL || _pfnSymFunctionTableAccess64 == NULL || _pfnSymGetModuleBase64 == NULL) { // We can't call StackWalk64 to walk the stack, but we are still // able to decode the symbols. Let's limp on. _pfnStackWalk64 = NULL; _pfnSymFunctionTableAccess64 = NULL; _pfnSymGetModuleBase64 = NULL; } #endif HANDLE hProcess = ::GetCurrentProcess(); _pfnSymSetOptions(SYMOPT_UNDNAME | SYMOPT_DEFERRED_LOADS | SYMOPT_EXACT_SYMBOLS); if (!_pfnSymInitialize(hProcess, NULL, TRUE)) { _pfnSymGetSymFromAddr64 = NULL; _pfnUndecorateSymbolName = NULL; ::FreeLibrary(handle); _dbghelp_handle = NULL; _decoder_status = helper_init_error; return; } // set pdb search paths pfn_SymSetSearchPath _pfn_SymSetSearchPath = (pfn_SymSetSearchPath)::GetProcAddress(handle, "SymSetSearchPath"); pfn_SymGetSearchPath _pfn_SymGetSearchPath = (pfn_SymGetSearchPath)::GetProcAddress(handle, "SymGetSearchPath"); if (_pfn_SymSetSearchPath != NULL && _pfn_SymGetSearchPath != NULL) { char paths[MAX_PATH]; int len = sizeof(paths); if (!_pfn_SymGetSearchPath(hProcess, paths, len)) { paths[0] = '\0'; } else { // available spaces in path buffer len -= (int)strlen(paths); } char tmp_path[MAX_PATH]; DWORD dwSize; HMODULE hJVM = ::GetModuleHandle("jvm.dll"); tmp_path[0] = '\0'; // append the path where jvm.dll is located if (hJVM != NULL && (dwSize = ::GetModuleFileName(hJVM, tmp_path, sizeof(tmp_path))) > 0) { while (dwSize > 0 && tmp_path[dwSize] != '\\') { dwSize --; } tmp_path[dwSize] = '\0'; if (dwSize > 0 && len > (int)dwSize + 1) { strncat(paths, os::path_separator(), 1); strncat(paths, tmp_path, dwSize); len -= dwSize + 1; } } // append $JRE/bin. Arguments::get_java_home actually returns $JRE // path char *p = Arguments::get_java_home(); assert(p != NULL, "empty java home"); size_t java_home_len = strlen(p); if (len > (int)java_home_len + 5) { strncat(paths, os::path_separator(), 1); strncat(paths, p, java_home_len); strncat(paths, "\\bin", 4); len -= (int)(java_home_len + 5); } // append $JDK/bin path if it exists assert(java_home_len < MAX_PATH, "Invalid path length"); // assume $JRE is under $JDK, construct $JDK/bin path and // see if it exists or not if (strncmp(&p[java_home_len - 3], "jre", 3) == 0) { strncpy(tmp_path, p, java_home_len - 3); tmp_path[java_home_len - 3] = '\0'; strncat(tmp_path, "bin", 3); // if the directory exists DWORD dwAttrib = GetFileAttributes(tmp_path); if (dwAttrib != INVALID_FILE_ATTRIBUTES && (dwAttrib & FILE_ATTRIBUTE_DIRECTORY)) { // tmp_path should have the same length as java_home_len, since we only // replaced 'jre' with 'bin' if (len > (int)java_home_len + 1) { strncat(paths, os::path_separator(), 1); strncat(paths, tmp_path, java_home_len); } } } _pfn_SymSetSearchPath(hProcess, paths); } // find out if jvm.dll contains private symbols, by decoding // current function and comparing the result address addr = (address)Decoder::demangle; char buf[MAX_PATH]; if (decode(addr, buf, sizeof(buf), NULL)) { _can_decode_in_vm = !strcmp(buf, "Decoder::demangle"); } } } void WindowsDecoder::uninitialize() { _pfnSymGetSymFromAddr64 = NULL; _pfnUndecorateSymbolName = NULL; #ifdef AMD64 _pfnStackWalk64 = NULL; _pfnSymFunctionTableAccess64 = NULL; _pfnSymGetModuleBase64 = NULL; #endif if (_dbghelp_handle != NULL) { ::FreeLibrary(_dbghelp_handle); } _dbghelp_handle = NULL; } bool WindowsDecoder::can_decode_C_frame_in_vm() const { return (!has_error() && _can_decode_in_vm); } bool WindowsDecoder::decode(address addr, char *buf, int buflen, int* offset, const char* modulepath) { if (_pfnSymGetSymFromAddr64 != NULL) { PIMAGEHLP_SYMBOL64 pSymbol; char symbolInfo[MAX_PATH + sizeof(IMAGEHLP_SYMBOL64)]; pSymbol = (PIMAGEHLP_SYMBOL64)symbolInfo; pSymbol->MaxNameLength = MAX_PATH; pSymbol->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64); DWORD64 displacement; if (_pfnSymGetSymFromAddr64(::GetCurrentProcess(), (DWORD64)addr, &displacement, pSymbol)) { if (buf != NULL) { if (demangle(pSymbol->Name, buf, buflen)) { jio_snprintf(buf, buflen, "%s", pSymbol->Name); } } if(offset != NULL) *offset = (int)displacement; return true; } } if (buf != NULL && buflen > 0) buf[0] = '\0'; if (offset != NULL) *offset = -1; return false; } bool WindowsDecoder::demangle(const char* symbol, char *buf, int buflen) { return _pfnUndecorateSymbolName != NULL && _pfnUndecorateSymbolName(symbol, buf, buflen, UNDNAME_COMPLETE); } #ifdef AMD64 BOOL WindowsDbgHelp::StackWalk64(DWORD MachineType, HANDLE hProcess, HANDLE hThread, LPSTACKFRAME64 StackFrame, PVOID ContextRecord, PREAD_PROCESS_MEMORY_ROUTINE64 ReadMemoryRoutine, PFUNCTION_TABLE_ACCESS_ROUTINE64 FunctionTableAccessRoutine, PGET_MODULE_BASE_ROUTINE64 GetModuleBaseRoutine, PTRANSLATE_ADDRESS_ROUTINE64 TranslateAddress) { DecoderLocker locker; WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); if (!wd->has_error() && wd->_pfnStackWalk64) { return wd->_pfnStackWalk64(MachineType, hProcess, hThread, StackFrame, ContextRecord, ReadMemoryRoutine, FunctionTableAccessRoutine, GetModuleBaseRoutine, TranslateAddress); } else { return false; } } PVOID WindowsDbgHelp::SymFunctionTableAccess64(HANDLE hProcess, DWORD64 AddrBase) { DecoderLocker locker; WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); if (!wd->has_error() && wd->_pfnSymFunctionTableAccess64) { return wd->_pfnSymFunctionTableAccess64(hProcess, AddrBase); } else { return NULL; } } pfn_SymFunctionTableAccess64 WindowsDbgHelp::pfnSymFunctionTableAccess64() { DecoderLocker locker; WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); if (!wd->has_error()) { return wd->_pfnSymFunctionTableAccess64; } else { return NULL; } } pfn_SymGetModuleBase64 WindowsDbgHelp::pfnSymGetModuleBase64() { DecoderLocker locker; WindowsDecoder* wd = (WindowsDecoder*)locker.decoder(); if (!wd->has_error()) { return wd->_pfnSymGetModuleBase64; } else { return NULL; } } #endif // AMD64