Open source Star Ruler 2 source code!

source/game/as/as_jit.h

@@ -0,0 +1,53 @@
+#pragma once
+#include "angelscript.h"
+#include <vector>
+#include <map>
+
+namespace assembler {
+struct CodePage;
+struct CriticalSection;
+};
+
+enum JITSettings {
+	//Should the JIT attempt to suspend? (Slightly faster, but makes suspension very rare if it occurs at all)
+	JIT_NO_SUSPEND = 0x01,
+	//Should the JIT reset the FPU entering System calls? (Slightly faster, may not work on all platforms)
+	JIT_SYSCALL_FPU_NORESET = 0x02,
+	//Should the JIT support error events from System calls? (Faster, but exceptions will generally be ignored, possibly leading to crashes)
+	JIT_SYSCALL_NO_ERRORS = 0x04,
+	//Do allocation/deallocation functions inspect the script context? (Faster, but won't work correctly if you try to get information about the script system during allocations)
+	JIT_ALLOC_SIMPLE = 0x08,
+	//Fall back to AngelScript to perform switch logic? (Slower, but uses less memory)
+	JIT_NO_SWITCHES = 0x10,
+	//Fall back to AngelScript to perform script calls
+	// Slower, but can be used as a temporary workaround for angelscript changes
+	JIT_NO_SCRIPT_CALLS = 0x20,
+	//Make calling reference counting functions faster in common situations
+	// Reference counting functions which access the script context will produce undefined results
+	JIT_FAST_REFCOUNT = 0x40,
+};
+
+class asCJITCompiler : public asIJITCompiler {
+	assembler::CodePage* activePage;
+	std::multimap<asJITFunction,assembler::CodePage*> pages;
+
+	assembler::CriticalSection* lock;
+
+	unsigned flags;
+
+	std::multimap<asJITFunction,unsigned char**> jumpTables;
+	unsigned char** activeJumpTable;
+	unsigned currentTableSize;
+
+	struct DeferredCodePointer {
+		void** jitFunction;
+		void** jitEntry;
+	};
+	std::multimap<asIScriptFunction*,DeferredCodePointer> deferredPointers;
+public:
+	asCJITCompiler(unsigned Flags = 0);
+	~asCJITCompiler();
+	int CompileFunction(asIScriptFunction *function, asJITFunction *output);
+    void ReleaseJITFunction(asJITFunction func);
+	void finalizePages();
+};