diff options
Diffstat (limited to 'squirrel_3_0_1_stable/squirrel/sqvm.h')
| -rw-r--r-- | squirrel_3_0_1_stable/squirrel/sqvm.h | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/squirrel_3_0_1_stable/squirrel/sqvm.h b/squirrel_3_0_1_stable/squirrel/sqvm.h new file mode 100644 index 000000000..397dcd9c1 --- /dev/null +++ b/squirrel_3_0_1_stable/squirrel/sqvm.h @@ -0,0 +1,208 @@ +/* see copyright notice in squirrel.h */
+#ifndef _SQVM_H_
+#define _SQVM_H_
+
+#include "sqopcodes.h"
+#include "sqobject.h"
+#define MAX_NATIVE_CALLS 100
+#define MIN_STACK_OVERHEAD 15
+
+#define SQ_SUSPEND_FLAG -666
+#define DONT_FALL_BACK 666
+//base lib
+void sq_base_register(HSQUIRRELVM v);
+
+struct SQExceptionTrap{
+ SQExceptionTrap() {}
+ SQExceptionTrap(SQInteger ss, SQInteger stackbase,SQInstruction *ip, SQInteger ex_target){ _stacksize = ss; _stackbase = stackbase; _ip = ip; _extarget = ex_target;}
+ SQExceptionTrap(const SQExceptionTrap &et) { (*this) = et; }
+ SQInteger _stackbase;
+ SQInteger _stacksize;
+ SQInstruction *_ip;
+ SQInteger _extarget;
+};
+
+#define _INLINE
+
+#define STK(a) _stack._vals[_stackbase+(a)]
+#define TARGET _stack._vals[_stackbase+arg0]
+
+typedef sqvector<SQExceptionTrap> ExceptionsTraps;
+
+struct SQVM : public CHAINABLE_OBJ
+{
+ struct CallInfo{
+ //CallInfo() { _generator = NULL;}
+ SQInstruction *_ip;
+ SQObjectPtr *_literals;
+ SQObjectPtr _closure;
+ SQGenerator *_generator;
+ SQInt32 _etraps;
+ SQInt32 _prevstkbase;
+ SQInt32 _prevtop;
+ SQInt32 _target;
+ SQInt32 _ncalls;
+ SQBool _root;
+ };
+
+typedef sqvector<CallInfo> CallInfoVec;
+public:
+ void DebugHookProxy(SQInteger type, const SQChar * sourcename, SQInteger line, const SQChar * funcname);
+ static void _DebugHookProxy(HSQUIRRELVM v, SQInteger type, const SQChar * sourcename, SQInteger line, const SQChar * funcname);
+ enum ExecutionType { ET_CALL, ET_RESUME_GENERATOR, ET_RESUME_VM,ET_RESUME_THROW_VM };
+ SQVM(SQSharedState *ss);
+ ~SQVM();
+ bool Init(SQVM *friendvm, SQInteger stacksize);
+ bool Execute(SQObjectPtr &func, SQInteger nargs, SQInteger stackbase, SQObjectPtr &outres, SQBool raiseerror, ExecutionType et = ET_CALL);
+ //starts a native call return when the NATIVE closure returns
+ bool CallNative(SQNativeClosure *nclosure, SQInteger nargs, SQInteger newbase, SQObjectPtr &retval,bool &suspend);
+ //starts a SQUIRREL call in the same "Execution loop"
+ bool StartCall(SQClosure *closure, SQInteger target, SQInteger nargs, SQInteger stackbase, bool tailcall);
+ bool CreateClassInstance(SQClass *theclass, SQObjectPtr &inst, SQObjectPtr &constructor);
+ //call a generic closure pure SQUIRREL or NATIVE
+ bool Call(SQObjectPtr &closure, SQInteger nparams, SQInteger stackbase, SQObjectPtr &outres,SQBool raiseerror);
+ SQRESULT Suspend();
+
+ void CallDebugHook(SQInteger type,SQInteger forcedline=0);
+ void CallErrorHandler(SQObjectPtr &e);
+ bool Get(const SQObjectPtr &self, const SQObjectPtr &key, SQObjectPtr &dest, bool raw, SQInteger selfidx);
+ SQInteger FallBackGet(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest);
+ bool InvokeDefaultDelegate(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr &dest);
+ bool Set(const SQObjectPtr &self, const SQObjectPtr &key, const SQObjectPtr &val, SQInteger selfidx);
+ SQInteger FallBackSet(const SQObjectPtr &self,const SQObjectPtr &key,const SQObjectPtr &val);
+ bool NewSlot(const SQObjectPtr &self, const SQObjectPtr &key, const SQObjectPtr &val,bool bstatic);
+ bool DeleteSlot(const SQObjectPtr &self, const SQObjectPtr &key, SQObjectPtr &res);
+ bool Clone(const SQObjectPtr &self, SQObjectPtr &target);
+ bool ObjCmp(const SQObjectPtr &o1, const SQObjectPtr &o2,SQInteger &res);
+ bool StringCat(const SQObjectPtr &str, const SQObjectPtr &obj, SQObjectPtr &dest);
+ static bool IsEqual(const SQObjectPtr &o1,const SQObjectPtr &o2,bool &res);
+ bool ToString(const SQObjectPtr &o,SQObjectPtr &res);
+ SQString *PrintObjVal(const SQObjectPtr &o);
+
+
+ void Raise_Error(const SQChar *s, ...);
+ void Raise_Error(const SQObjectPtr &desc);
+ void Raise_IdxError(const SQObjectPtr &o);
+ void Raise_CompareError(const SQObject &o1, const SQObject &o2);
+ void Raise_ParamTypeError(SQInteger nparam,SQInteger typemask,SQInteger type);
+
+ void FindOuter(SQObjectPtr &target, SQObjectPtr *stackindex);
+ void RelocateOuters();
+ void CloseOuters(SQObjectPtr *stackindex);
+
+ bool TypeOf(const SQObjectPtr &obj1, SQObjectPtr &dest);
+ bool CallMetaMethod(SQObjectPtr &closure, SQMetaMethod mm, SQInteger nparams, SQObjectPtr &outres);
+ bool ArithMetaMethod(SQInteger op, const SQObjectPtr &o1, const SQObjectPtr &o2, SQObjectPtr &dest);
+ bool Return(SQInteger _arg0, SQInteger _arg1, SQObjectPtr &retval);
+ //new stuff
+ _INLINE bool ARITH_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2);
+ _INLINE bool BW_OP(SQUnsignedInteger op,SQObjectPtr &trg,const SQObjectPtr &o1,const SQObjectPtr &o2);
+ _INLINE bool NEG_OP(SQObjectPtr &trg,const SQObjectPtr &o1);
+ _INLINE bool CMP_OP(CmpOP op, const SQObjectPtr &o1,const SQObjectPtr &o2,SQObjectPtr &res);
+ bool CLOSURE_OP(SQObjectPtr &target, SQFunctionProto *func);
+ bool CLASS_OP(SQObjectPtr &target,SQInteger base,SQInteger attrs);
+ //return true if the loop is finished
+ bool FOREACH_OP(SQObjectPtr &o1,SQObjectPtr &o2,SQObjectPtr &o3,SQObjectPtr &o4,SQInteger arg_2,int exitpos,int &jump);
+ //_INLINE bool LOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr);
+ _INLINE bool PLOCAL_INC(SQInteger op,SQObjectPtr &target, SQObjectPtr &a, SQObjectPtr &incr);
+ _INLINE bool DerefInc(SQInteger op,SQObjectPtr &target, SQObjectPtr &self, SQObjectPtr &key, SQObjectPtr &incr, bool postfix,SQInteger arg0);
+#ifdef _DEBUG_DUMP
+ void dumpstack(SQInteger stackbase=-1, bool dumpall = false);
+#endif
+
+#ifndef NO_GARBAGE_COLLECTOR
+ void Mark(SQCollectable **chain);
+ SQObjectType GetType() {return OT_THREAD;}
+#endif
+ void Finalize();
+ void GrowCallStack() {
+ SQInteger newsize = _alloccallsstacksize*2;
+ _callstackdata.resize(newsize);
+ _callsstack = &_callstackdata[0];
+ _alloccallsstacksize = newsize;
+ }
+ bool EnterFrame(SQInteger newbase, SQInteger newtop, bool tailcall);
+ void LeaveFrame();
+ void Release(){ sq_delete(this,SQVM); }
+////////////////////////////////////////////////////////////////////////////
+ //stack functions for the api
+ void Remove(SQInteger n);
+
+ static bool IsFalse(SQObjectPtr &o);
+
+ void Pop();
+ void Pop(SQInteger n);
+ void Push(const SQObjectPtr &o);
+ void PushNull();
+ SQObjectPtr &Top();
+ SQObjectPtr &PopGet();
+ SQObjectPtr &GetUp(SQInteger n);
+ SQObjectPtr &GetAt(SQInteger n);
+
+ SQObjectPtrVec _stack;
+
+ SQInteger _top;
+ SQInteger _stackbase;
+ SQOuter *_openouters;
+ SQObjectPtr _roottable;
+ SQObjectPtr _lasterror;
+ SQObjectPtr _errorhandler;
+
+ bool _debughook;
+ SQDEBUGHOOK _debughook_native;
+ SQObjectPtr _debughook_closure;
+
+ SQObjectPtr temp_reg;
+
+
+ CallInfo* _callsstack;
+ SQInteger _callsstacksize;
+ SQInteger _alloccallsstacksize;
+ sqvector<CallInfo> _callstackdata;
+
+ ExceptionsTraps _etraps;
+ CallInfo *ci;
+ void *_foreignptr;
+ //VMs sharing the same state
+ SQSharedState *_sharedstate;
+ SQInteger _nnativecalls;
+ SQInteger _nmetamethodscall;
+ //suspend infos
+ SQBool _suspended;
+ SQBool _suspended_root;
+ SQInteger _suspended_target;
+ SQInteger _suspended_traps;
+};
+
+struct AutoDec{
+ AutoDec(SQInteger *n) { _n = n; }
+ ~AutoDec() { (*_n)--; }
+ SQInteger *_n;
+};
+
+inline SQObjectPtr &stack_get(HSQUIRRELVM v,SQInteger idx){return ((idx>=0)?(v->GetAt(idx+v->_stackbase-1)):(v->GetUp(idx)));}
+
+#define _ss(_vm_) (_vm_)->_sharedstate
+
+#ifndef NO_GARBAGE_COLLECTOR
+#define _opt_ss(_vm_) (_vm_)->_sharedstate
+#else
+#define _opt_ss(_vm_) NULL
+#endif
+
+#define PUSH_CALLINFO(v,nci){ \
+ SQInteger css = v->_callsstacksize; \
+ if(css == v->_alloccallsstacksize) { \
+ v->GrowCallStack(); \
+ } \
+ v->ci = &v->_callsstack[css]; \
+ *(v->ci) = nci; \
+ v->_callsstacksize++; \
+}
+
+#define POP_CALLINFO(v){ \
+ SQInteger css = --v->_callsstacksize; \
+ v->ci->_closure.Null(); \
+ v->ci = css?&v->_callsstack[css-1]:NULL; \
+}
+#endif //_SQVM_H_
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