From 2666fe4a1440cc798b9db68fcc807450d46069c2 Mon Sep 17 00:00:00 2001
From: Lars Knoll <lars.knoll@qt.io>
Date: Wed, 27 Jun 2018 14:18:17 +0200
Subject: Move the C++ and JS stack frame definitions into it's own file

Change-Id: I86e89e07197aec6071809c2d32bd5c98cb7ac6f6
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 src/qml/jsruntime/qv4stackframe_p.h | 130 ++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 src/qml/jsruntime/qv4stackframe_p.h

(limited to 'src/qml/jsruntime/qv4stackframe_p.h')

diff --git a/src/qml/jsruntime/qv4stackframe_p.h b/src/qml/jsruntime/qv4stackframe_p.h
new file mode 100644
index 0000000000..1735d020e0
--- /dev/null
+++ b/src/qml/jsruntime/qv4stackframe_p.h
@@ -0,0 +1,130 @@
+/****************************************************************************
+**
+** Copyright (C) 2018 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QV4STACKFRAME_H
+#define QV4STACKFRAME_H
+
+#include <private/qv4context_p.h>
+#ifndef V4_BOOTSTRAP
+#include <private/qv4function_p.h>
+#endif
+
+QT_BEGIN_NAMESPACE
+
+namespace QV4 {
+
+struct CallData
+{
+    enum Offsets {
+        Function = 0,
+        Context = 1,
+        Accumulator = 2,
+        This = 3,
+        NewTarget = 4,
+        Argc = 5
+    };
+
+    Value function;
+    Value context;
+    Value accumulator;
+    Value thisObject;
+    Value newTarget;
+    Value _argc;
+
+    int argc() const {
+        Q_ASSERT(_argc.isInteger());
+        return _argc.int_32();
+    }
+
+    void setArgc(int argc) {
+        Q_ASSERT(argc >= 0);
+        _argc.setInt_32(argc);
+    }
+
+    inline ReturnedValue argument(int i) const {
+        return i < argc() ? args[i].asReturnedValue() : Primitive::undefinedValue().asReturnedValue();
+    }
+
+    Value args[1];
+
+    static Q_DECL_CONSTEXPR int HeaderSize() { return offsetof(CallData, args) / sizeof(QV4::Value); }
+};
+
+Q_STATIC_ASSERT(std::is_standard_layout<CallData>::value);
+Q_STATIC_ASSERT(offsetof(CallData, thisObject) == CallData::This*sizeof(Value));
+Q_STATIC_ASSERT(offsetof(CallData, args) == 6*sizeof(Value));
+
+struct Q_QML_EXPORT CppStackFrame {
+    CppStackFrame *parent;
+    Function *v4Function;
+    CallData *jsFrame;
+    const Value *originalArguments;
+    int originalArgumentsCount;
+    int instructionPointer;
+    const char *yield;
+    const char *unwindHandler;
+    const char *unwindLabel;
+    int unwindLevel;
+
+#ifndef V4_BOOTSTRAP
+    uint requiredJSStackFrameSize() {
+        return CallData::HeaderSize() + v4Function->compiledFunction->nRegisters;
+    }
+#endif
+
+    QString source() const;
+    QString function() const;
+    inline QV4::ExecutionContext *context() const {
+        return static_cast<ExecutionContext *>(&jsFrame->context);
+    }
+    int lineNumber() const;
+
+    inline QV4::Heap::CallContext *callContext() const {
+        Heap::ExecutionContext *ctx = static_cast<ExecutionContext &>(jsFrame->context).d();\
+        while (ctx->type != Heap::ExecutionContext::Type_CallContext)
+            ctx = ctx->outer;
+        return static_cast<Heap::CallContext *>(ctx);
+    }
+    ReturnedValue thisObject() const;
+};
+
+}
+
+QT_END_NAMESPACE
+
+#endif
-- 
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