diff options
Diffstat (limited to 'extra')
| -rw-r--r-- | extra/qt5-declarative/Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch | 122 | ||||
| -rw-r--r-- | extra/qt5-declarative/PKGBUILD | 13 |
2 files changed, 135 insertions, 0 deletions
diff --git a/extra/qt5-declarative/Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch b/extra/qt5-declarative/Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch new file mode 100644 index 00000000..a4ce8465 --- /dev/null +++ b/extra/qt5-declarative/Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch @@ -0,0 +1,122 @@ +From 4950c366b12265f1ea390a6feb8dbbd0d850d206 Mon Sep 17 00:00:00 2001 +From: Guillem Jover <guillem@hadrons.org> +Date: Mon, 12 Oct 2015 01:45:37 +0200 +Subject: [PATCH v2] Do not make lack of SSE2 support on x86-32 fatal + +When an x86-32 CPU does not have SSE2 support (which is the case for +all AMD CPUs, and older Intel CPUs), fallback to use the interpreter, +otherwise use the JIT engine. + +Even then, make the lack of SSE2 support on x86-32 fatal when trying +to instantiate a JIT engine, which does require it. + +Refactor the required CPU support check into a new pair of privately +exported functions to avoid duplicating the logic, and do so in +functions instead of class members to avoid changing the class +signatures. + +Version: 5.7.x +Bug-Debian: https://bugs.debian.org/792594 +--- + src/qml/jit/qv4isel_masm.cpp | 2 ++ + src/qml/jit/qv4isel_masm_p.h | 18 ++++++++++++++++++ + src/qml/jsruntime/qv4engine.cpp | 1 + + src/qml/qml/v8/qv8engine.cpp | 7 ------- + tools/qmljs/qmljs.cpp | 7 +++---- + 5 files changed, 24 insertions(+), 11 deletions(-) + +--- a/src/qml/jit/qv4isel_masm.cpp ++++ b/src/qml/jit/qv4isel_masm.cpp +@@ -72,6 +72,8 @@ InstructionSelection<JITAssembler>::Inst + , compilationUnit(new CompilationUnit) + , qmlEngine(qmlEngine) + { ++ checkRequiredCpuSupport(); ++ + compilationUnit->codeRefs.resize(module->functions.size()); + module->unitFlags |= QV4::CompiledData::Unit::ContainsMachineCode; + } +--- a/src/qml/jit/qv4isel_masm_p.h ++++ b/src/qml/jit/qv4isel_masm_p.h +@@ -60,6 +60,7 @@ + + #include <QtCore/QHash> + #include <QtCore/QStack> ++#include <private/qsimd_p.h> + #include <config.h> + #include <wtf/Vector.h> + +@@ -72,6 +73,23 @@ QT_BEGIN_NAMESPACE + namespace QV4 { + namespace JIT { + ++Q_QML_PRIVATE_EXPORT inline bool hasRequiredCpuSupport() ++{ ++#ifdef Q_PROCESSOR_X86_32 ++ return qCpuHasFeature(SSE2); ++#else ++ return true; ++#endif ++} ++ ++Q_QML_PRIVATE_EXPORT inline void checkRequiredCpuSupport() ++{ ++#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 ++} ++ + template <typename JITAssembler = Assembler<DefaultAssemblerTargetConfiguration>> + class Q_QML_EXPORT InstructionSelection: + protected IR::IRDecoder, +--- a/src/qml/jsruntime/qv4engine.cpp ++++ b/src/qml/jsruntime/qv4engine.cpp +@@ -159,6 +159,7 @@ + + #ifdef V4_ENABLE_JIT + static const bool forceMoth = !qEnvironmentVariableIsEmpty("QV4_FORCE_INTERPRETER") || ++ !JIT::hasRequiredCpuSupport() || + !OSAllocator::canAllocateExecutableMemory(); + if (forceMoth) { + factory = new Moth::ISelFactory; +--- a/src/qml/qml/v8/qv8engine.cpp ++++ b/src/qml/qml/v8/qv8engine.cpp +@@ -64,7 +64,6 @@ + #include <QtCore/qjsonvalue.h> + #include <QtCore/qdatetime.h> + #include <QtCore/qdatastream.h> +-#include <private/qsimd_p.h> + + #include <private/qv4value_p.h> + #include <private/qv4dateobject_p.h> +@@ -129,12 +128,6 @@ QV8Engine::QV8Engine(QJSEngine* qq) + , m_xmlHttpRequestData(0) + , m_listModelData(0) + { +-#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 +- + QML_MEMORY_SCOPE_STRING("QV8Engine::QV8Engine"); + qMetaTypeId<QJSValue>(); + qMetaTypeId<QList<int> >(); +--- a/tools/qmljs/qmljs.cpp ++++ b/tools/qmljs/qmljs.cpp +@@ -92,11 +92,10 @@ int main(int argc, char *argv[]) + enum { + use_masm, + use_moth +- } mode; ++ } mode = use_moth; + #ifdef V4_ENABLE_JIT +- mode = use_masm; +-#else +- mode = use_moth; ++ if (QV4::JIT::hasRequiredCpuSupport()) ++ mode = use_masm; + #endif + + bool runAsQml = false; diff --git a/extra/qt5-declarative/PKGBUILD b/extra/qt5-declarative/PKGBUILD new file mode 100644 index 00000000..4b0c4b87 --- /dev/null +++ b/extra/qt5-declarative/PKGBUILD @@ -0,0 +1,13 @@ +# see https://bugreports.qt.io/browse/QTBUG-35430 +# and https://lists.debian.org/debian-qt-kde/2015/10/msg00388.html +# and https://packages.debian.org/sid/qtdeclarative5-dev + +source+=(Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch) +sha256sums+=('26120747f744571f2ead15c904fcd8d60e0c94fb538c711ae6051ab02d418e0d') + +eval "$( + declare -f prepare | \ + sed ' + /cd/a patch -Np1 -i ../Do-not-make-lack-of-SSE2-support-on-x86-32-fatal.patch + ' +)" |