diff options
Diffstat (limited to 'src/qml/jsruntime/qv4stacktrace.cpp')
| -rw-r--r-- | src/qml/jsruntime/qv4stacktrace.cpp | 182 |
1 files changed, 0 insertions, 182 deletions
diff --git a/src/qml/jsruntime/qv4stacktrace.cpp b/src/qml/jsruntime/qv4stacktrace.cpp deleted file mode 100644 index 905111a23e..0000000000 --- a/src/qml/jsruntime/qv4stacktrace.cpp +++ /dev/null @@ -1,182 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/legal -** -** This file is part of the QtQml module of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and Digia. For licensing terms and -** conditions see http://qt.digia.com/licensing. For further information -** use the contact form at http://qt.digia.com/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 2.1 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 2.1 requirements -** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Digia gives you certain additional -** rights. These rights are described in the Digia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 3.0 as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL included in the -** packaging of this file. Please review the following information to -** ensure the GNU General Public License version 3.0 requirements will be -** met: http://www.gnu.org/copyleft/gpl.html. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#if defined(_WIN32) && !(defined(WINCE) || defined(_WIN32_WCE)) -#include <windows.h> -#include <DbgHelp.h> -#endif - -#include "qv4stacktrace_p.h" -#include "qv4function_p.h" -#include "qv4engine_p.h" -#include "qv4unwindhelper_p.h" - -#if defined(V4_CXX_ABI_EXCEPTION) || (defined(Q_OS_DARWIN) && !defined(Q_PROCESSOR_ARM_32)) -#define USE_UNWIND_BACKTRACE -#endif - -#if defined(USE_UNWIND_BACKTRACE) -#include <unwind.h> - -struct BacktraceHelper -{ - void **array; - int maximumSize; - int frameCount; -}; - -static _Unwind_Reason_Code bt_helper(struct _Unwind_Context *ctx, void *data) -{ - BacktraceHelper *helper = reinterpret_cast<BacktraceHelper*>(data); - - if (helper->frameCount != -1) { - helper->array[helper->frameCount] = (void*)_Unwind_GetIP(ctx); - - if (helper->frameCount > 0 && helper->array[helper->frameCount] == helper->array[helper->frameCount - 1]) - return _URC_END_OF_STACK; - } - ++helper->frameCount; - if (helper->frameCount == helper->maximumSize) - return _URC_END_OF_STACK; - return _URC_NO_REASON; -} - -static int get_backtrace_from_libunwind(void **array, int size) -{ - BacktraceHelper helper; - helper.array = array; - helper.maximumSize = size; - helper.frameCount = -1; // To skip this function - _Unwind_Backtrace(&bt_helper, &helper); - return helper.frameCount; -} -#endif - -QT_BEGIN_NAMESPACE - -using namespace QV4; - -NativeStackTrace::NativeStackTrace(ExecutionContext *context) -{ - engine = context->engine; - currentNativeFrame = 0; - -#if defined(USE_UNWIND_BACKTRACE) - UnwindHelper::prepareForUnwind(context); - - nativeFrameCount = get_backtrace_from_libunwind(&trace[0], sizeof(trace) / sizeof(trace[0])); -#elif defined(Q_OS_WIN) && !defined(Q_OS_WINCE) - - int machineType = 0; - - CONTEXT winContext; - memset(&winContext, 0, sizeof(winContext)); - winContext.ContextFlags = CONTEXT_FULL; - RtlCaptureContext(&winContext); - - STACKFRAME64 sf64; - memset(&sf64, 0, sizeof(sf64)); - -#if defined(Q_PROCESSOR_X86_32) - machineType = IMAGE_FILE_MACHINE_I386; - - sf64.AddrFrame.Offset = winContext.Ebp; - sf64.AddrFrame.Mode = AddrModeFlat; - sf64.AddrPC.Offset = winContext.Eip; - sf64.AddrPC.Mode = AddrModeFlat; - sf64.AddrStack.Offset = winContext.Esp; - sf64.AddrStack.Mode = AddrModeFlat; - -#elif defined(Q_PROCESSOR_X86_64) - machineType = IMAGE_FILE_MACHINE_AMD64; - - sf64.AddrFrame.Offset = winContext.Rbp; - sf64.AddrFrame.Mode = AddrModeFlat; - sf64.AddrPC.Offset = winContext.Rip; - sf64.AddrPC.Mode = AddrModeFlat; - sf64.AddrStack.Offset = winContext.Rsp; - sf64.AddrStack.Mode = AddrModeFlat; - -#else -#error "Platform unsupported!" -#endif - - nativeFrameCount = 0; - - while (StackWalk64(machineType, GetCurrentProcess(), GetCurrentThread(), &sf64, &winContext, 0, SymFunctionTableAccess64, SymGetModuleBase64, 0)) { - - if (sf64.AddrReturn.Offset == 0) - break; - - trace[nativeFrameCount] = reinterpret_cast<void*>(sf64.AddrReturn.Offset); - nativeFrameCount++; - if (nativeFrameCount >= sizeof(trace) / sizeof(trace[0])) - break; - } - -#else - nativeFrameCount = 0; -#endif - } - -NativeFrame NativeStackTrace::nextFrame() { - NativeFrame frame; - frame.function = 0; - frame.line = -1; - - for (; currentNativeFrame < nativeFrameCount && !frame.function; ++currentNativeFrame) { - quintptr pc = reinterpret_cast<quintptr>(trace[currentNativeFrame]); - // The pointers from the back trace point to the return address, but we are interested in - // the caller site. - pc = pc - 1; - - Function *f = engine->functionForProgramCounter(pc); - if (!f) - continue; - - frame.function = f; - frame.line = f->lineNumberForProgramCounter(pc - reinterpret_cast<quintptr>(f->codePtr)); - } - - return frame; -} - -QT_END_NAMESPACE |