JavaScriptCore-7600.1.4.16.1.tar.gz

[apple/javascriptcore.git] / heap / MachineStackMarker.h

diff --git a/heap/MachineStackMarker.h b/heap/MachineStackMarker.h
index 33b72c8614f06afeb41dc0490252a61067b53968..22b1d222ead4863223e7ac3fc11de1f60a065cc7 100644 (file)
--- a/heap/MachineStackMarker.h
+++ b/heap/MachineStackMarker.h
@@ -22,6 +22,7 @@
 #ifndef MachineThreads_h
 #define MachineThreads_h
 
+#include <setjmp.h>
 #include <wtf/Noncopyable.h>
 #include <wtf/ThreadSpecific.h>
 #include <wtf/ThreadingPrimitives.h>
@@ -36,16 +37,18 @@ namespace JSC {
     class MachineThreads {
         WTF_MAKE_NONCOPYABLE(MachineThreads);
     public:
+        typedef jmp_buf RegisterState;
+
         MachineThreads(Heap*);
         ~MachineThreads();
 
-        void gatherConservativeRoots(ConservativeRoots&, JITStubRoutineSet&, CodeBlockSet&, void* stackCurrent);
+        void gatherConservativeRoots(ConservativeRoots&, JITStubRoutineSet&, CodeBlockSet&, void* stackCurrent, RegisterState& registers);
 
         JS_EXPORT_PRIVATE void makeUsableFromMultipleThreads();
         JS_EXPORT_PRIVATE void addCurrentThread(); // Only needs to be called by clients that can use the same heap from multiple threads.
 
     private:
-        void gatherFromCurrentThread(ConservativeRoots&, JITStubRoutineSet&, CodeBlockSet&, void* stackCurrent);
+        void gatherFromCurrentThread(ConservativeRoots&, JITStubRoutineSet&, CodeBlockSet&, void* stackCurrent, RegisterState& registers);
 
         class Thread;
 
@@ -64,4 +67,24 @@ namespace JSC {
 
 } // namespace JSC
 
+#if COMPILER(GCC)
+#define REGISTER_BUFFER_ALIGNMENT __attribute__ ((aligned (sizeof(void*))))
+#else
+#define REGISTER_BUFFER_ALIGNMENT
+#endif
+
+// ALLOCATE_AND_GET_REGISTER_STATE() is a macro so that it is always "inlined" even in debug builds.
+#if COMPILER(MSVC)
+#pragma warning(push)
+#pragma warning(disable: 4611)
+#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
+    MachineThreads::RegisterState registers REGISTER_BUFFER_ALIGNMENT; \
+    setjmp(registers)
+#pragma warning(pop)
+#else
+#define ALLOCATE_AND_GET_REGISTER_STATE(registers) \
+    MachineThreads::RegisterState registers REGISTER_BUFFER_ALIGNMENT; \
+    setjmp(registers)
+#endif
+
 #endif // MachineThreads_h