QtDeclarative fixes and workarounds for NaClwip/nacl

Make QtDeclarative run on Native Client.

Some of these should be looked at more closely at
a later point in time, but will do as workarounds
from now.

Change-Id: Ifddcb45b190c3a80c6137772a05ababb5466ea22
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>

9 files changed, 42 insertions, 8 deletions

diff --git a/src/3rdparty/double-conversion/utils.h b/src/3rdparty/double-conversion/utils.h
index 53eec64282..a14550c5d5 100644
--- a/src/3rdparty/double-conversion/utils.h
+++ b/src/3rdparty/double-conversion/utils.h
@@ -65,7 +65,8 @@
     defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
     defined(__SH4__) || defined(__alpha__) || \
     defined(_MIPS_ARCH_MIPS32R2) || \
-    defined(__AARCH64EL__)
+    defined(__AARCH64EL__) || \
+    defined(__pnacl__)
 #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
 #elif defined(_M_IX86) || defined(__i386__) || defined(__i386)
 #if defined(_WIN32)
diff --git a/src/plugins/plugins.pro b/src/plugins/plugins.pro
index 273407c19d..90bdbd2b27 100644
--- a/src/plugins/plugins.pro
+++ b/src/plugins/plugins.pro
@@ -1,2 +1,3 @@
 TEMPLATE = subdirs
-!contains(QT_CONFIG, no-qml-debug):SUBDIRS += qmltooling
+!nacl:!contains(QT_CONFIG, no-qml-debug):SUBDIRS += qmltooling
+!nacl:SUBDIRS +=  qmltooling
diff --git a/src/qml/jsruntime/qv4dateobject.cpp b/src/qml/jsruntime/qv4dateobject.cpp
index a6e1f47d91..83032c4dc3 100644
--- a/src/qml/jsruntime/qv4dateobject.cpp
+++ b/src/qml/jsruntime/qv4dateobject.cpp
@@ -609,7 +609,15 @@ static inline QString ToLocaleTimeString(double t)
 
 static double getLocalTZA()
 {
-#ifndef Q_OS_WIN
+#ifdef Q_OS_WIN
+    TIME_ZONE_INFORMATION tzInfo;
+    GetTimeZoneInformation(&tzInfo);
+    return -tzInfo.Bias * 60.0 * 1000.0;
+#elif defined(Q_OS_NACL_NEWLIB)
+    // ### tzset hidden behind __STRICT_ANSI__
+    qWarning("Not implemented: getLocalTZA()");
+    return 0;
+#else
     struct tm t;
     time_t curr;
     tzset();
@@ -619,10 +627,6 @@ static double getLocalTZA()
     gmtime_r(&curr, &t);
     time_t globl = mktime(&t);
     return (double(locl) - double(globl)) * 1000.0;
-#else
-    TIME_ZONE_INFORMATION tzInfo;
-    GetTimeZoneInformation(&tzInfo);
-    return -tzInfo.Bias * 60.0 * 1000.0;
 #endif
 }
 
diff --git a/src/qml/jsruntime/qv4engine.cpp b/src/qml/jsruntime/qv4engine.cpp
index 2560f065cf..284a9ea88a 100644
--- a/src/qml/jsruntime/qv4engine.cpp
+++ b/src/qml/jsruntime/qv4engine.cpp
@@ -113,7 +113,7 @@ QT_WARNING_DISABLE_MSVC(4172) // MSVC 2015: warning C4172: returning address of
 quintptr getStackLimit()
 {
     quintptr stackLimit;
-#if USE(PTHREADS) && !OS(QNX)
+#if USE(PTHREADS) && !OS(QNX) && !defined(Q_OS_NACL)
 #  if OS(DARWIN)
     pthread_t thread_self = pthread_self();
     void *stackTop = pthread_get_stackaddr_np(thread_self);
diff --git a/src/qml/qml/qqmldirparser.cpp b/src/qml/qml/qqmldirparser.cpp
index 57b50733ea..ca3e620996 100644
--- a/src/qml/qml/qqmldirparser.cpp
+++ b/src/qml/qml/qqmldirparser.cpp
@@ -100,6 +100,10 @@ bool QQmlDirParser::parse(const QString &source)
     _plugins.clear();
     _components.clear();
     _scripts.clear();
+#ifdef Q_OS_NACL
+    // ### Work around "only one module identifier" error below
+    _typeNamespace.clear();
+#endif
     _designerSupported = false;
 
     quint16 lineNumber = 0;
diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index d538199520..10cb377929 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -1206,6 +1206,10 @@ bool QQmlImportsPrivate::validateQmldirVersion(const QQmlTypeLoader::QmldirConte
         }
     }
 
+#ifdef Q_OS_NACL
+    // ### This check triggers on NaCl: lowest_min/highest_min do not
+    // get set to senisble values. Disabling allows loading to continue.
+#else
     if (lowest_min > vmin || highest_min < vmin) {
         QQmlError error;
         error.setDescription(QQmlImportDatabase::tr("module \"%1\" version %2.%3 is not installed").arg(uri).arg(vmaj).arg(vmin));
@@ -1213,6 +1217,7 @@ bool QQmlImportsPrivate::validateQmldirVersion(const QQmlTypeLoader::QmldirConte
         return false;
     }
 
+#endif
     return true;
 }
 
@@ -1565,7 +1570,13 @@ QQmlImportDatabase::QQmlImportDatabase(QQmlEngine *e)
 
     // Search order is applicationDirPath(), $QML2_IMPORT_PATH, QLibraryInfo::Qml2ImportsPath
 
+#ifdef Q_OS_NACL
+    // Hardcode the qml imports to "qml/" relative to the app nexe.
+    // This should perhaps be set via Qml2Imports in qt.conf.
+    QString installImportsPath = QStringLiteral("qml/");
+#else
     QString installImportsPath =  QLibraryInfo::location(QLibraryInfo::Qml2ImportsPath);
+#endif
     addImportPath(installImportsPath);
 
     // env import paths
diff --git a/src/qml/qml/qqmltypeloader.cpp b/src/qml/qml/qqmltypeloader.cpp
index 1e671542be..dd6de8f9b3 100644
--- a/src/qml/qml/qqmltypeloader.cpp
+++ b/src/qml/qml/qqmltypeloader.cpp
@@ -1706,9 +1706,14 @@ Returns a QQmlQmldirData for \a url.  The QQmlQmldirData may be cached.
 */
 QQmlQmldirData *QQmlTypeLoader::getQmldir(const QUrl &url)
 {
+#ifdef Q_OS_NACL
+    // ### NaCl asserts here on urls like "qml/QtQuick.2.1/qmldir",
+    // which are relative urls we want to load over the network.
+#else
     Q_ASSERT(!url.isRelative() &&
             (QQmlFile::urlToLocalFileOrQrc(url).isEmpty() ||
              !QDir::isRelativePath(QQmlFile::urlToLocalFileOrQrc(url))));
+#endif
 
     LockHolder<QQmlTypeLoader> holder(this);
 
diff --git a/src/qml/qml/v8/qv8engine.cpp b/src/qml/qml/v8/qv8engine.cpp
index dae932e705..0915b8f80b 100644
--- a/src/qml/qml/v8/qv8engine.cpp
+++ b/src/qml/qml/v8/qv8engine.cpp
@@ -123,11 +123,14 @@ QV8Engine::QV8Engine(QJSEngine* qq)
     , m_xmlHttpRequestData(0)
     , m_listModelData(0)
 {
+
+#ifndef Q_OS_NACL
 #ifdef Q_PROCESSOR_X86_32
     if (!qCpuHasFeature(SSE2)) {
         qFatal("This program requires an X86 processor that supports SSE2 extension, at least a Pentium 4 or newer");
     }
 #endif
+#endif
 
     QML_MEMORY_SCOPE_STRING("QV8Engine::QV8Engine");
     qMetaTypeId<QJSValue>();
diff --git a/src/quick/scenegraph/qsgcontext.cpp b/src/quick/scenegraph/qsgcontext.cpp
index dd6977e42e..836b043c39 100644
--- a/src/quick/scenegraph/qsgcontext.cpp
+++ b/src/quick/scenegraph/qsgcontext.cpp
@@ -634,6 +634,11 @@ void QSGRenderContext::initialize(QOpenGLContext *context)
         m_brokenIBOs = true;
 #endif
 
+#ifdef Q_OS_NACL
+    // Standard path fails with "glBindBuffer: buffer bound to more than 1 target"
+    m_brokenIBOs = true;
+#endif
+
     emit initialized();
 }