diff options
Diffstat (limited to 'src/qml/jsruntime/qv4unwindhelper_dw2_p.h')
| -rw-r--r-- | src/qml/jsruntime/qv4unwindhelper_dw2_p.h | 191 |
1 files changed, 0 insertions, 191 deletions
diff --git a/src/qml/jsruntime/qv4unwindhelper_dw2_p.h b/src/qml/jsruntime/qv4unwindhelper_dw2_p.h deleted file mode 100644 index 03533ba526..0000000000 --- a/src/qml/jsruntime/qv4unwindhelper_dw2_p.h +++ /dev/null @@ -1,191 +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. -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QV4UNWINDHELPER_PDW2_H -#define QV4UNWINDHELPER_PDW2_H - -#include "qv4unwindhelper_p.h" -#include "qv4functionobject_p.h" -#include "qv4function_p.h" -#include <wtf/Platform.h> -#include <wtf/PageAllocation.h> -#include <ExecutableAllocator.h> -#include <private/qv4isel_masm_p.h> - -#include <QMap> -#include <QMutex> - -QT_BEGIN_NAMESPACE - -namespace QV4 { - -namespace { -#if CPU(X86_64) -// Generated by fdegen -static const unsigned char cie_fde_data[] = { - 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x1, 0x0, 0x8, 0x78, 0x10, 0xc, 0x7, 0x8, - 0x90, 0x1, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0, - 0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x0, 0x0, 0x0, 0x0, 0x41, 0x13, 0x7e, 0x86, - 0x2, 0x43, 0xd, 0x6, 0x8c, 0x3, 0x8e, 0x4, - 0x0, 0x0, 0x0, 0x0 -}; -static const int fde_offset = 20; -static const int initial_location_offset = 28; -static const int address_range_offset = 36; -#elif CPU(X86) -static const unsigned char cie_fde_data[] = { - 0x10, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x1, 0x0, 0x4, 0x7c, 0x8, 0xc, 0x4, 0x4, - 0x88, 0x1, 0x0, 0x0, 0x20, 0x0, 0x0, 0x0, - 0x18, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, - 0x0, 0x0, 0x0, 0x0, 0x41, 0x13, 0x7e, 0x85, - 0x2, 0x43, 0xd, 0x5, 0x86, 0x3, 0x87, 0x4, - 0x0, 0x0, 0x0, 0x0, -}; -static const int fde_offset = 20; -static const int initial_location_offset = 28; -static const int address_range_offset = 32; -#endif - -void writeIntPtrValue(unsigned char *addr, qintptr val) -{ - addr[0] = (val >> 0) & 0xff; - addr[1] = (val >> 8) & 0xff; - addr[2] = (val >> 16) & 0xff; - addr[3] = (val >> 24) & 0xff; -#if QT_POINTER_SIZE == 8 - addr[4] = (val >> 32) & 0xff; - addr[5] = (val >> 40) & 0xff; - addr[6] = (val >> 48) & 0xff; - addr[7] = (val >> 56) & 0xff; -#endif -} -} // anonymous namespace - -extern "C" void __register_frame(void *fde); -extern "C" void __deregister_frame(void *fde); - -struct UnwindInfo : public ExecutableAllocator::PlatformUnwindInfo -{ - UnwindInfo(const QByteArray &cieFde); - virtual ~UnwindInfo(); - QByteArray data; -}; - -UnwindInfo::UnwindInfo(const QByteArray &cieFde) - : data(cieFde) -{ - __register_frame(data.data() + fde_offset); -} - -UnwindInfo::~UnwindInfo() -{ - __deregister_frame(data.data() + fde_offset); -} - -static void ensureUnwindInfo(Function *f) -{ - if (!f->codePtr) - return; // Not a JIT generated function - - ExecutableAllocator::ChunkOfPages *chunk = f->compilationUnit->chunkForFunction(f->compiledFunction->index); - if (!chunk) - return; - - // Already registered? - if (chunk->unwindInfo) - return; - - QByteArray info; - info.resize(sizeof(cie_fde_data)); - - unsigned char *cie_and_fde = reinterpret_cast<unsigned char *>(info.data()); - memcpy(cie_and_fde, cie_fde_data, sizeof(cie_fde_data)); - - qintptr ptr = static_cast<char *>(chunk->pages->base()) - static_cast<char *>(0); - writeIntPtrValue(cie_and_fde + initial_location_offset, ptr); - - writeIntPtrValue(cie_and_fde + address_range_offset, chunk->pages->size()); - - chunk->unwindInfo = new UnwindInfo(info); -} - -void UnwindHelper::prepareForUnwind(ExecutionContext *context) -{ - for (ExecutionContext *ctx = context; ctx; ctx = ctx->parent) { - if (CallContext *callCtx = ctx->asCallContext()) - if (FunctionObject *fobj = callCtx->function) - if (Function *fun = fobj->function) - ensureUnwindInfo(fun); - for (ExecutionContext::EvalCode *code = ctx->currentEvalCode; - code; code = code->next) - ensureUnwindInfo(code->function); - } - - if (context->engine->globalCode) - ensureUnwindInfo(context->engine->globalCode); -} - -void UnwindHelper::registerFunction(Function *) -{ -} - -void UnwindHelper::registerFunctions(const QVector<Function *>&) -{ -} - -void UnwindHelper::deregisterFunction(Function *) -{ -} - -void UnwindHelper::deregisterFunctions(const QVector<Function *> &) -{ -} - -} - -QT_END_NAMESPACE - -#endif // QV4UNWINDHELPER_PDW2_H |