diff options
author | Simon Hausmann <simon.hausmann@qt.io> | 2017-02-09 15:53:13 +0100 |
---|---|---|
committer | Simon Hausmann <simon.hausmann@qt.io> | 2017-03-17 08:35:27 +0000 |
commit | 8e64fdf246a9076d4044e6c78af29e499f48905c (patch) | |
tree | 11bdad684c5137e08d3ab2e5b505ed9c1532b5c6 /src/qml/jit/qv4assembler_p.h | |
parent | 7efa1e60d24fee9b1745c30965949af78f3fb0f3 (diff) |
Prepare run-time method calling mechanism for cross-compilation
The current way of encoding the offsetof() of the method_ members in
QV4::Runtime is not portable when cross-compiling from a 64-bit host
(where the offsetof would be calculated on) to a 32-bit target (where
the offset would be different), or vice versa. In preparation for making
this work, this patch first replaces the direct use of the run-time
members with use through a void * and an enum for indexing. This gives
us some type-safety in some places and will also allow for a translation
of the pointer offset from host pointer indexing to target pointer
indexes.
As a bonus we can avoid going through the engine->runtime indirection in
the interpreter altogether and call the static methods right away.
Task-number: QTBUG-58666
Change-Id: I3cd6459523923a9719408317fa729bca19c2bf3c
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Diffstat (limited to 'src/qml/jit/qv4assembler_p.h')
-rw-r--r-- | src/qml/jit/qv4assembler_p.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/qml/jit/qv4assembler_p.h b/src/qml/jit/qv4assembler_p.h index 0a27ab02cf..3cd33e91e7 100644 --- a/src/qml/jit/qv4assembler_p.h +++ b/src/qml/jit/qv4assembler_p.h @@ -131,7 +131,7 @@ typedef AssemblerTargetConfiguration<DefaultPlatformMacroAssembler, NoOperatingS #define isel_stringIfy(s) isel_stringIfyx(s) #define generateRuntimeCall(as, t, function, ...) \ - as->generateFunctionCallImp(Runtime::Method_##function##_NeedsExceptionCheck, t, "Runtime::" isel_stringIfy(function), typename JITAssembler::RuntimeCall(qOffsetOf(QV4::Runtime, function)), __VA_ARGS__) + as->generateFunctionCallImp(Runtime::Method_##function##_NeedsExceptionCheck, t, "Runtime::" isel_stringIfy(function), typename JITAssembler::RuntimeCall(QV4::Runtime::function), __VA_ARGS__) template <typename JITAssembler, typename MacroAssembler, typename TargetPlatform, int RegisterSize> @@ -734,7 +734,7 @@ public: struct RuntimeCall { Address addr; - inline RuntimeCall(uint offset = uint(INT_MIN)); + inline RuntimeCall(Runtime::RuntimeMethods method = Runtime::InvalidRuntimeMethod); bool isValid() const { return addr.offset >= 0; } }; @@ -1685,8 +1685,9 @@ void Assembler<TargetConfiguration>::copyValue(Result result, IR::Expr* source) } template <typename TargetConfiguration> -inline Assembler<TargetConfiguration>::RuntimeCall::RuntimeCall(uint offset) - : addr(Assembler::EngineRegister, offset + qOffsetOf(QV4::ExecutionEngine, runtime)) +inline Assembler<TargetConfiguration>::RuntimeCall::RuntimeCall(Runtime::RuntimeMethods method) + : addr(Assembler::EngineRegister, + method == Runtime::InvalidRuntimeMethod ? -1 : (Assembler<TargetConfiguration>::targetStructureOffset(qOffsetOf(QV4::ExecutionEngine, runtime) + Runtime::runtimeMethodOffset(method)))) { } |