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101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
//===--- ImageInspectionWin32.cpp - Win32 image inspection ----------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "SymbolInfo.h"
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#if defined(_WIN32) && !defined(__CYGWIN__)
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#define WIN32_LEAN_AND_MEAN
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#define NOMINMAX
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#include <Windows.h>
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#include <DbgHelp.h>
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#elif SWIFT_STDLIB_HAS_DLADDR
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#include <dlfcn.h>
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#endif
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#include "swift/Runtime/Win32.h"
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#include "ImageInspection.h"
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using namespace swift;
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const char *SymbolInfo::getFilename() const {
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#if defined(_WIN32) && !defined(__CYGWIN__)
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return nullptr;
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#elif SWIFT_STDLIB_HAS_DLADDR
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return _info.dli_fname;
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#else
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return nullptr;
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#endif
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}
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const void *SymbolInfo::getBaseAddress() const {
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#if defined(_WIN32) && !defined(__CYGWIN__)
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return reinterpret_cast<const void *>(_package.si.ModBase);
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#elif SWIFT_STDLIB_HAS_DLADDR
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return _info.dli_fbase;
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#else
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return nullptr;
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#endif
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}
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const char *SymbolInfo::getSymbolName() const {
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#if defined(_WIN32) && !defined(__CYGWIN__)
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return _package.si.Name;
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#elif SWIFT_STDLIB_HAS_DLADDR
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return _info.dli_sname;
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#else
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return nullptr;
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#endif
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}
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const void *SymbolInfo::getSymbolAddress() const {
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#if defined(_WIN32) && !defined(__CYGWIN__)
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return reinterpret_cast<const void *>(_package.si.Address);
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#elif SWIFT_STDLIB_HAS_DLADDR
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return _info.dli_saddr;
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#else
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return nullptr;
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#endif
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}
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llvm::Optional<SymbolInfo> SymbolInfo::lookup(const void *address) {
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llvm::Optional<SymbolInfo> result;
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#if defined(__wasm__)
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// Currently, Wasm doesn't have a standard stable ABI for exporting address <->
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// symbol table, it's work in progress. Also, there is no API to access such
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// information from Wasm binary side. It's accessible only from host VM.
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// See https://github.com/WebAssembly/tool-conventions/blob/main/DynamicLinking.md
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#elif defined(_WIN32) && !defined(__CYGWIN__)
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_swift_win32_withDbgHelpLibrary([&] (HANDLE hProcess) {
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if (!hProcess) {
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return;
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}
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SymbolInfo info;
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info._package.si.SizeOfStruct = sizeof(SYMBOL_INFO);
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info._package.si.MaxNameLen = MAX_SYM_NAME;
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if (SymFromAddr(hProcess, reinterpret_cast<const DWORD64>(address),
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nullptr, &info._package.si)) {
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result = info;
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}
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});
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#elif SWIFT_STDLIB_HAS_DLADDR
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SymbolInfo info;
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if (dladdr(address, &info._info)) {
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result = info;
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}
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#endif
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return result;
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}
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