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use std::convert::TryFrom;
macro_rules! using_opcode_database {
( $macro:ident ! ( ) ) => {
$macro! {
[
// WARNING
// The following section is generated by update_stencil.py.
// Do mot modify manually.
//
// @@@@ BEGIN OPCODES @@@@
(Undefined, undefined, "", 1, 0, 1, JOF_BYTE),
(Null, null, "null", 1, 0, 1, JOF_BYTE),
(False, false_, "false", 1, 0, 1, JOF_BYTE),
(True, true_, "true", 1, 0, 1, JOF_BYTE),
(Int32, int32, NULL, 5, 0, 1, JOF_INT32),
(Zero, zero, "0", 1, 0, 1, JOF_BYTE),
(One, one, "1", 1, 0, 1, JOF_BYTE),
(Int8, int8, NULL, 2, 0, 1, JOF_INT8),
(Uint16, uint16, NULL, 3, 0, 1, JOF_UINT16),
(Uint24, uint24, NULL, 4, 0, 1, JOF_UINT24),
(Double, double_, NULL, 9, 0, 1, JOF_DOUBLE),
(BigInt, big_int, NULL, 5, 0, 1, JOF_BIGINT),
(String, string, NULL, 5, 0, 1, JOF_STRING),
(Symbol, symbol, NULL, 2, 0, 1, JOF_UINT8),
(Void, void_, NULL, 1, 1, 1, JOF_BYTE),
(Typeof, typeof_, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(TypeofExpr, typeof_expr, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(Pos, pos, "+ ", 1, 1, 1, JOF_BYTE|JOF_IC),
(Neg, neg, "- ", 1, 1, 1, JOF_BYTE|JOF_IC),
(BitNot, bit_not, "~", 1, 1, 1, JOF_BYTE|JOF_IC),
(Not, not_, "!", 1, 1, 1, JOF_BYTE|JOF_IC),
(BitOr, bit_or, "|", 1, 2, 1, JOF_BYTE|JOF_IC),
(BitXor, bit_xor, "^", 1, 2, 1, JOF_BYTE|JOF_IC),
(BitAnd, bit_and, "&", 1, 2, 1, JOF_BYTE|JOF_IC),
(Eq, eq, "==", 1, 2, 1, JOF_BYTE|JOF_IC),
(Ne, ne, "!=", 1, 2, 1, JOF_BYTE|JOF_IC),
(StrictEq, strict_eq, "===", 1, 2, 1, JOF_BYTE|JOF_IC),
(StrictNe, strict_ne, "!==", 1, 2, 1, JOF_BYTE|JOF_IC),
(Lt, lt, "<", 1, 2, 1, JOF_BYTE|JOF_IC),
(Gt, gt, ">", 1, 2, 1, JOF_BYTE|JOF_IC),
(Le, le, "<=", 1, 2, 1, JOF_BYTE|JOF_IC),
(Ge, ge, ">=", 1, 2, 1, JOF_BYTE|JOF_IC),
(Instanceof, instanceof, "instanceof", 1, 2, 1, JOF_BYTE|JOF_IC),
(In, in_, "in", 1, 2, 1, JOF_BYTE|JOF_IC),
(Lsh, lsh, "<<", 1, 2, 1, JOF_BYTE|JOF_IC),
(Rsh, rsh, ">>", 1, 2, 1, JOF_BYTE|JOF_IC),
(Ursh, ursh, ">>>", 1, 2, 1, JOF_BYTE|JOF_IC),
(Add, add, "+", 1, 2, 1, JOF_BYTE|JOF_IC),
(Sub, sub, "-", 1, 2, 1, JOF_BYTE|JOF_IC),
(Inc, inc, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(Dec, dec, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(Mul, mul, "*", 1, 2, 1, JOF_BYTE|JOF_IC),
(Div, div, "/", 1, 2, 1, JOF_BYTE|JOF_IC),
(Mod, mod, "%", 1, 2, 1, JOF_BYTE|JOF_IC),
(Pow, pow, "**", 1, 2, 1, JOF_BYTE|JOF_IC),
(ToPropertyKey, to_property_key, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(ToNumeric, to_numeric, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(ToString, to_string, NULL, 1, 1, 1, JOF_BYTE),
(IsNullOrUndefined, is_null_or_undefined, NULL, 1, 1, 2, JOF_BYTE),
(GlobalThis, global_this, NULL, 1, 0, 1, JOF_BYTE),
(NonSyntacticGlobalThis, non_syntactic_global_this, NULL, 1, 0, 1, JOF_BYTE),
(NewTarget, new_target, NULL, 1, 0, 1, JOF_BYTE),
(DynamicImport, dynamic_import, NULL, 1, 2, 1, JOF_BYTE),
(ImportMeta, import_meta, NULL, 1, 0, 1, JOF_BYTE),
(NewInit, new_init, NULL, 1, 0, 1, JOF_BYTE|JOF_IC),
(NewObject, new_object, NULL, 5, 0, 1, JOF_SHAPE|JOF_IC),
(Object, object, NULL, 5, 0, 1, JOF_OBJECT),
(ObjWithProto, obj_with_proto, NULL, 1, 1, 1, JOF_BYTE),
(InitProp, init_prop, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT|JOF_IC),
(InitHiddenProp, init_hidden_prop, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT|JOF_IC),
(InitLockedProp, init_locked_prop, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT|JOF_IC),
(InitElem, init_elem, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT|JOF_IC),
(InitHiddenElem, init_hidden_elem, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT|JOF_IC),
(InitLockedElem, init_locked_elem, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT|JOF_IC),
(InitPropGetter, init_prop_getter, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT),
(InitHiddenPropGetter, init_hidden_prop_getter, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT),
(InitElemGetter, init_elem_getter, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT),
(InitHiddenElemGetter, init_hidden_elem_getter, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT),
(InitPropSetter, init_prop_setter, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT),
(InitHiddenPropSetter, init_hidden_prop_setter, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPINIT),
(InitElemSetter, init_elem_setter, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT),
(InitHiddenElemSetter, init_hidden_elem_setter, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPINIT),
(GetProp, get_prop, NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_IC),
(GetElem, get_elem, NULL, 1, 2, 1, JOF_BYTE|JOF_ELEM|JOF_IC),
(SetProp, set_prop, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPSET|JOF_CHECKSLOPPY|JOF_IC),
(StrictSetProp, strict_set_prop, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_PROPSET|JOF_CHECKSTRICT|JOF_IC),
(SetElem, set_elem, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPSET|JOF_CHECKSLOPPY|JOF_IC),
(StrictSetElem, strict_set_elem, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_PROPSET|JOF_CHECKSTRICT|JOF_IC),
(DelProp, del_prop, NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_CHECKSLOPPY),
(StrictDelProp, strict_del_prop, NULL, 5, 1, 1, JOF_ATOM|JOF_PROP|JOF_CHECKSTRICT),
(DelElem, del_elem, NULL, 1, 2, 1, JOF_BYTE|JOF_ELEM|JOF_CHECKSLOPPY),
(StrictDelElem, strict_del_elem, NULL, 1, 2, 1, JOF_BYTE|JOF_ELEM|JOF_CHECKSTRICT),
(HasOwn, has_own, NULL, 1, 2, 1, JOF_BYTE|JOF_IC),
(CheckPrivateField, check_private_field, NULL, 3, 2, 3, JOF_TWO_UINT8|JOF_CHECKSTRICT|JOF_IC),
(NewPrivateName, new_private_name, NULL, 5, 0, 1, JOF_ATOM),
(SuperBase, super_base, NULL, 1, 1, 1, JOF_BYTE),
(GetPropSuper, get_prop_super, NULL, 5, 2, 1, JOF_ATOM|JOF_PROP|JOF_IC),
(GetElemSuper, get_elem_super, NULL, 1, 3, 1, JOF_BYTE|JOF_ELEM|JOF_IC),
(SetPropSuper, set_prop_super, NULL, 5, 3, 1, JOF_ATOM|JOF_PROP|JOF_PROPSET|JOF_CHECKSLOPPY),
(StrictSetPropSuper, strict_set_prop_super, NULL, 5, 3, 1, JOF_ATOM|JOF_PROP|JOF_PROPSET|JOF_CHECKSTRICT),
(SetElemSuper, set_elem_super, NULL, 1, 4, 1, JOF_BYTE|JOF_ELEM|JOF_PROPSET|JOF_CHECKSLOPPY),
(StrictSetElemSuper, strict_set_elem_super, NULL, 1, 4, 1, JOF_BYTE|JOF_ELEM|JOF_PROPSET|JOF_CHECKSTRICT),
(Iter, iter, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(MoreIter, more_iter, NULL, 1, 1, 2, JOF_BYTE),
(IsNoIter, is_no_iter, NULL, 1, 1, 2, JOF_BYTE),
(EndIter, end_iter, NULL, 1, 2, 0, JOF_BYTE),
(CloseIter, close_iter, NULL, 2, 1, 0, JOF_UINT8|JOF_IC),
(CheckIsObj, check_is_obj, NULL, 2, 1, 1, JOF_UINT8),
(CheckObjCoercible, check_obj_coercible, NULL, 1, 1, 1, JOF_BYTE),
(ToAsyncIter, to_async_iter, NULL, 1, 2, 1, JOF_BYTE),
(MutateProto, mutate_proto, NULL, 1, 2, 1, JOF_BYTE),
(NewArray, new_array, NULL, 5, 0, 1, JOF_UINT32|JOF_IC),
(InitElemArray, init_elem_array, NULL, 5, 2, 1, JOF_UINT32|JOF_ELEM|JOF_PROPINIT),
(InitElemInc, init_elem_inc, NULL, 1, 3, 2, JOF_BYTE|JOF_ELEM|JOF_PROPINIT|JOF_IC),
(Hole, hole, NULL, 1, 0, 1, JOF_BYTE),
(RegExp, reg_exp, NULL, 5, 0, 1, JOF_REGEXP),
(Lambda, lambda, NULL, 5, 0, 1, JOF_OBJECT),
(SetFunName, set_fun_name, NULL, 2, 2, 1, JOF_UINT8),
(InitHomeObject, init_home_object, NULL, 1, 2, 1, JOF_BYTE),
(CheckClassHeritage, check_class_heritage, NULL, 1, 1, 1, JOF_BYTE),
(FunWithProto, fun_with_proto, NULL, 5, 1, 1, JOF_OBJECT),
(BuiltinObject, builtin_object, NULL, 2, 0, 1, JOF_UINT8),
(Call, call, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_IC),
(CallContent, call_content, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_IC),
(CallIter, call_iter, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_IC),
(CallContentIter, call_content_iter, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_IC),
(CallIgnoresRv, call_ignores_rv, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_IC),
(SpreadCall, spread_call, NULL, 1, 3, 1, JOF_BYTE|JOF_INVOKE|JOF_SPREAD|JOF_IC),
(OptimizeSpreadCall, optimize_spread_call, NULL, 1, 1, 1, JOF_BYTE|JOF_IC),
(Eval, eval, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_CHECKSLOPPY|JOF_IC),
(SpreadEval, spread_eval, NULL, 1, 3, 1, JOF_BYTE|JOF_INVOKE|JOF_SPREAD|JOF_CHECKSLOPPY|JOF_IC),
(StrictEval, strict_eval, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_CHECKSTRICT|JOF_IC),
(StrictSpreadEval, strict_spread_eval, NULL, 1, 3, 1, JOF_BYTE|JOF_INVOKE|JOF_SPREAD|JOF_CHECKSTRICT|JOF_IC),
(ImplicitThis, implicit_this, "", 5, 0, 1, JOF_ATOM),
(CallSiteObj, call_site_obj, NULL, 5, 0, 1, JOF_OBJECT),
(IsConstructing, is_constructing, NULL, 1, 0, 1, JOF_BYTE),
(New, new_, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_CONSTRUCT|JOF_IC),
(NewContent, new_content, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_CONSTRUCT|JOF_IC),
(SuperCall, super_call, NULL, 3, -1, 1, JOF_ARGC|JOF_INVOKE|JOF_CONSTRUCT|JOF_IC),
(SpreadNew, spread_new, NULL, 1, 4, 1, JOF_BYTE|JOF_INVOKE|JOF_CONSTRUCT|JOF_SPREAD|JOF_IC),
(SpreadSuperCall, spread_super_call, NULL, 1, 4, 1, JOF_BYTE|JOF_INVOKE|JOF_CONSTRUCT|JOF_SPREAD|JOF_IC),
(SuperFun, super_fun, NULL, 1, 1, 1, JOF_BYTE),
(CheckThisReinit, check_this_reinit, NULL, 1, 1, 1, JOF_BYTE),
(Generator, generator, NULL, 1, 0, 1, JOF_BYTE),
(InitialYield, initial_yield, NULL, 4, 1, 3, JOF_RESUMEINDEX),
(AfterYield, after_yield, NULL, 5, 0, 0, JOF_ICINDEX),
(FinalYieldRval, final_yield_rval, NULL, 1, 1, 0, JOF_BYTE),
(Yield, yield, NULL, 4, 2, 3, JOF_RESUMEINDEX),
(IsGenClosing, is_gen_closing, NULL, 1, 1, 2, JOF_BYTE),
(AsyncAwait, async_await, NULL, 1, 2, 1, JOF_BYTE),
(AsyncResolve, async_resolve, NULL, 2, 2, 1, JOF_UINT8),
(Await, await, NULL, 4, 2, 3, JOF_RESUMEINDEX),
(CanSkipAwait, can_skip_await, NULL, 1, 1, 2, JOF_BYTE),
(MaybeExtractAwaitValue, maybe_extract_await_value, NULL, 1, 2, 2, JOF_BYTE),
(ResumeKind, resume_kind, NULL, 2, 0, 1, JOF_UINT8),
(CheckResumeKind, check_resume_kind, NULL, 1, 3, 1, JOF_BYTE),
(Resume, resume, NULL, 1, 3, 1, JOF_BYTE|JOF_INVOKE),
(JumpTarget, jump_target, NULL, 5, 0, 0, JOF_ICINDEX),
(LoopHead, loop_head, NULL, 6, 0, 0, JOF_LOOPHEAD),
(Goto, goto_, NULL, 5, 0, 0, JOF_JUMP),
(JumpIfFalse, jump_if_false, NULL, 5, 1, 0, JOF_JUMP|JOF_IC),
(JumpIfTrue, jump_if_true, NULL, 5, 1, 0, JOF_JUMP|JOF_IC),
(And, and_, NULL, 5, 1, 1, JOF_JUMP|JOF_IC),
(Or, or_, NULL, 5, 1, 1, JOF_JUMP|JOF_IC),
(Coalesce, coalesce, NULL, 5, 1, 1, JOF_JUMP),
(Case, case_, NULL, 5, 2, 1, JOF_JUMP),
(Default, default_, NULL, 5, 1, 0, JOF_JUMP),
(TableSwitch, table_switch, NULL, 16, 1, 0, JOF_TABLESWITCH),
(Return, return_, NULL, 1, 1, 0, JOF_BYTE),
(GetRval, get_rval, NULL, 1, 0, 1, JOF_BYTE),
(SetRval, set_rval, NULL, 1, 1, 0, JOF_BYTE),
(RetRval, ret_rval, NULL, 1, 0, 0, JOF_BYTE),
(CheckReturn, check_return, NULL, 1, 1, 1, JOF_BYTE),
(Throw, throw_, NULL, 1, 1, 0, JOF_BYTE),
(ThrowMsg, throw_msg, NULL, 2, 0, 0, JOF_UINT8),
(ThrowSetConst, throw_set_const, NULL, 5, 0, 0, JOF_ATOM|JOF_NAME),
(Try, try_, NULL, 1, 0, 0, JOF_BYTE),
(TryDestructuring, try_destructuring, NULL, 1, 0, 0, JOF_BYTE),
(Exception, exception, NULL, 1, 0, 1, JOF_BYTE),
(Finally, finally, NULL, 1, 0, 0, JOF_BYTE),
(Uninitialized, uninitialized, NULL, 1, 0, 1, JOF_BYTE),
(InitLexical, init_lexical, NULL, 4, 1, 1, JOF_LOCAL|JOF_NAME),
(InitGLexical, init_g_lexical, NULL, 5, 1, 1, JOF_ATOM|JOF_NAME|JOF_PROPINIT|JOF_GNAME|JOF_IC),
(InitAliasedLexical, init_aliased_lexical, NULL, 5, 1, 1, JOF_ENVCOORD|JOF_NAME|JOF_PROPINIT),
(CheckLexical, check_lexical, NULL, 4, 1, 1, JOF_LOCAL|JOF_NAME),
(CheckAliasedLexical, check_aliased_lexical, NULL, 5, 1, 1, JOF_ENVCOORD|JOF_NAME),
(CheckThis, check_this, NULL, 1, 1, 1, JOF_BYTE),
(BindGName, bind_g_name, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_GNAME|JOF_IC),
(BindName, bind_name, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_IC),
(GetName, get_name, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_IC),
(GetGName, get_g_name, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_GNAME|JOF_IC),
(GetArg, get_arg, NULL, 3, 0, 1, JOF_QARG|JOF_NAME),
(GetLocal, get_local, NULL, 4, 0, 1, JOF_LOCAL|JOF_NAME),
(GetAliasedVar, get_aliased_var, NULL, 5, 0, 1, JOF_ENVCOORD|JOF_NAME),
(GetAliasedDebugVar, get_aliased_debug_var, NULL, 5, 0, 1, JOF_DEBUGCOORD|JOF_NAME),
(GetImport, get_import, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME),
(GetBoundName, get_bound_name, NULL, 5, 1, 1, JOF_ATOM|JOF_NAME|JOF_IC),
(GetIntrinsic, get_intrinsic, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_IC),
(Callee, callee, NULL, 1, 0, 1, JOF_BYTE),
(EnvCallee, env_callee, NULL, 2, 0, 1, JOF_UINT8),
(SetName, set_name, NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_PROPSET|JOF_CHECKSLOPPY|JOF_IC),
(StrictSetName, strict_set_name, NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_PROPSET|JOF_CHECKSTRICT|JOF_IC),
(SetGName, set_g_name, NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_PROPSET|JOF_GNAME|JOF_CHECKSLOPPY|JOF_IC),
(StrictSetGName, strict_set_g_name, NULL, 5, 2, 1, JOF_ATOM|JOF_NAME|JOF_PROPSET|JOF_GNAME|JOF_CHECKSTRICT|JOF_IC),
(SetArg, set_arg, NULL, 3, 1, 1, JOF_QARG|JOF_NAME),
(SetLocal, set_local, NULL, 4, 1, 1, JOF_LOCAL|JOF_NAME),
(SetAliasedVar, set_aliased_var, NULL, 5, 1, 1, JOF_ENVCOORD|JOF_NAME|JOF_PROPSET),
(SetIntrinsic, set_intrinsic, NULL, 5, 1, 1, JOF_ATOM|JOF_NAME),
(PushLexicalEnv, push_lexical_env, NULL, 5, 0, 0, JOF_SCOPE),
(PopLexicalEnv, pop_lexical_env, NULL, 1, 0, 0, JOF_BYTE),
(DebugLeaveLexicalEnv, debug_leave_lexical_env, NULL, 1, 0, 0, JOF_BYTE),
(RecreateLexicalEnv, recreate_lexical_env, NULL, 5, 0, 0, JOF_SCOPE),
(FreshenLexicalEnv, freshen_lexical_env, NULL, 5, 0, 0, JOF_SCOPE),
(PushClassBodyEnv, push_class_body_env, NULL, 5, 0, 0, JOF_SCOPE),
(PushVarEnv, push_var_env, NULL, 5, 0, 0, JOF_SCOPE),
(EnterWith, enter_with, NULL, 5, 1, 0, JOF_SCOPE),
(LeaveWith, leave_with, NULL, 1, 0, 0, JOF_BYTE),
(BindVar, bind_var, NULL, 1, 0, 1, JOF_BYTE),
(GlobalOrEvalDeclInstantiation, global_or_eval_decl_instantiation, NULL, 5, 0, 0, JOF_GCTHING),
(DelName, del_name, NULL, 5, 0, 1, JOF_ATOM|JOF_NAME|JOF_CHECKSLOPPY),
(Arguments, arguments, NULL, 1, 0, 1, JOF_BYTE),
(Rest, rest, NULL, 1, 0, 1, JOF_BYTE|JOF_IC),
(FunctionThis, function_this, NULL, 1, 0, 1, JOF_BYTE),
(Pop, pop, NULL, 1, 1, 0, JOF_BYTE),
(PopN, pop_n, NULL, 3, -1, 0, JOF_UINT16),
(Dup, dup, NULL, 1, 1, 2, JOF_BYTE),
(Dup2, dup2, NULL, 1, 2, 4, JOF_BYTE),
(DupAt, dup_at, NULL, 4, 0, 1, JOF_UINT24),
(Swap, swap, NULL, 1, 2, 2, JOF_BYTE),
(Pick, pick, NULL, 2, 0, 0, JOF_UINT8),
(Unpick, unpick, NULL, 2, 0, 0, JOF_UINT8),
(Nop, nop, NULL, 1, 0, 0, JOF_BYTE),
(Lineno, lineno, NULL, 5, 0, 0, JOF_UINT32),
(NopDestructuring, nop_destructuring, NULL, 1, 0, 0, JOF_BYTE),
(ForceInterpreter, force_interpreter, NULL, 1, 0, 0, JOF_BYTE),
(DebugCheckSelfHosted, debug_check_self_hosted, NULL, 1, 1, 1, JOF_BYTE),
(Debugger, debugger, NULL, 1, 0, 0, JOF_BYTE),
// @@@@ END OPCODES @@@@
]
}
}
}
macro_rules! define_opcode_enum {
( [ $( ( $op:ident , $( $_etc:tt )* ), )* ] ) => {
#[derive(Copy, Clone, Debug, Eq, PartialEq)]
#[repr(u8)]
pub enum Opcode {
$( $op, )*
}
}
}
using_opcode_database!(define_opcode_enum!());
macro_rules! count_rows {
( [ $( $ignored_row:tt , )* ] ) => {
0 $( + count_rows!(one for $ignored_row) )*
};
( one for $ignored_row:tt ) => {
1
}
}
const JSOP_LIMIT: usize = using_opcode_database!(count_rows!());
// WARNING
// The following section is generated by update_stencil.py.
// Do mot modify manually.
//
// @@@@ BEGIN FLAGS @@@@
/// single bytecode, no immediates
const JOF_BYTE: u32 = 0;
/// unspecified uint8_t argument
const JOF_UINT8: u32 = 1;
/// unspecified uint16_t argument
const JOF_UINT16: u32 = 2;
/// unspecified uint24_t argument
const JOF_UINT24: u32 = 3;
/// unspecified uint32_t argument
const JOF_UINT32: u32 = 4;
/// int8_t literal
const JOF_INT8: u32 = 5;
/// int32_t literal
const JOF_INT32: u32 = 6;
/// int32_t jump offset
const JOF_JUMP: u32 = 7;
/// table switch
const JOF_TABLESWITCH: u32 = 8;
/// embedded ScopeCoordinate immediate
const JOF_ENVCOORD: u32 = 9;
/// uint16_t argument count
const JOF_ARGC: u32 = 10;
/// function argument index
const JOF_QARG: u32 = 11;
/// var or block-local variable
const JOF_LOCAL: u32 = 12;
/// yield or await resume index
const JOF_RESUMEINDEX: u32 = 13;
/// inline DoubleValue
const JOF_DOUBLE: u32 = 14;
/// uint32_t generic gc-thing index
const JOF_GCTHING: u32 = 15;
/// uint32_t constant index
const JOF_ATOM: u32 = 16;
/// uint32_t object index
const JOF_OBJECT: u32 = 17;
/// uint32_t regexp index
const JOF_REGEXP: u32 = 18;
/// uint32_t scope index
const JOF_SCOPE: u32 = 19;
/// uint32_t index for BigInt value
const JOF_BIGINT: u32 = 20;
/// uint32_t IC index
const JOF_ICINDEX: u32 = 21;
/// JSOp::LoopHead, combines JOF_ICINDEX and JOF_UINT8
const JOF_LOOPHEAD: u32 = 22;
/// A pair of unspecified uint8_t arguments
const JOF_TWO_UINT8: u32 = 23;
/// An embedded ScopeCoordinate immediate that may traverse DebugEnvironmentProxies
const JOF_DEBUGCOORD: u32 = 24;
/// uint32_t shape index
const JOF_SHAPE: u32 = 25;
/// uint32_t constant index
const JOF_STRING: u32 = 26;
/// mask for above immediate types
const JOF_TYPEMASK: u32 = 0xFF;
/// name operation
const JOF_NAME: u32 = 1 << 8;
/// obj.prop operation
const JOF_PROP: u32 = 2 << 8;
/// obj[index] operation
const JOF_ELEM: u32 = 3 << 8;
/// property/element/name set operation
const JOF_PROPSET: u32 = 1 << 16;
/// property/element/name init operation
const JOF_PROPINIT: u32 = 1 << 17;
/// op can only be generated in sloppy mode
const JOF_CHECKSLOPPY: u32 = 1 << 18;
/// op can only be generated in strict mode
const JOF_CHECKSTRICT: u32 = 1 << 19;
/// any call, construct, or eval instruction
const JOF_INVOKE: u32 = 1 << 20;
/// invoke instruction using [[Construct]] entry
const JOF_CONSTRUCT: u32 = 1 << 21;
/// invoke instruction using spread argument
const JOF_SPREAD: u32 = 1 << 22;
/// predicted global name
const JOF_GNAME: u32 = 1 << 23;
/// baseline may use an IC for this op
const JOF_IC: u32 = 1 << 24;
// @@@@ END FLAGS @@@@
impl Opcode {
/// Return the numeric bytecode value for this opcode, as understood by the
/// SpiderMonkey interpreter and the rest of the VM.
pub fn to_byte(&self) -> u8 {
*self as u8
}
/// True if this opcode takes no operands (is a one-byte opcode) and
/// implements a unary operator that operates on one stack value.
///
/// The operators `typeof` and `delete` have different bytecode patterns
/// and thus are not considered "simple"; `new` is considered a special
/// kind of function call, not a unary operator.
pub fn is_simple_unary_operator(self) -> bool {
self == Opcode::Pos
|| self == Opcode::Neg
|| self == Opcode::Not
|| self == Opcode::BitNot
|| self == Opcode::Void
}
/// True if this opcode takes no operands (is a one-byte opcode) and
/// implements a binary operator that operates on two stack values.
///
/// The operators `||`, `&&`, and `,` have different bytecode patterns
/// and thus are not considered "simple".
pub fn is_simple_binary_operator(self) -> bool {
self == Opcode::BitOr
|| self == Opcode::BitXor
|| self == Opcode::BitAnd
|| self == Opcode::Eq
|| self == Opcode::Ne
|| self == Opcode::StrictEq
|| self == Opcode::StrictNe
|| self == Opcode::Lt
|| self == Opcode::Gt
|| self == Opcode::Le
|| self == Opcode::Ge
|| self == Opcode::Instanceof
|| self == Opcode::In
|| self == Opcode::Lsh
|| self == Opcode::Rsh
|| self == Opcode::Ursh
|| self == Opcode::Add
|| self == Opcode::Sub
|| self == Opcode::Mul
|| self == Opcode::Div
|| self == Opcode::Mod
|| self == Opcode::Pow
}
pub fn is_jump_target(self) -> bool {
self == Opcode::JumpTarget || self == Opcode::LoopHead || self == Opcode::AfterYield
}
pub fn is_jump(self) -> bool {
self == Opcode::Goto
|| self == Opcode::JumpIfFalse
|| self == Opcode::JumpIfTrue
|| self == Opcode::Or
|| self == Opcode::And
|| self == Opcode::Coalesce
}
}
impl TryFrom<u8> for Opcode {
type Error = ();
fn try_from(value: u8) -> Result<Opcode, ()> {
if (value as usize) < JSOP_LIMIT {
Ok(TABLE[value as usize])
} else {
Err(())
}
}
}
macro_rules! define_table {
( [ $(
(
$op:ident , $op_snake:ident , $str:expr ,
$length:expr , $nuses:expr , $ndefs:expr , $format:expr
) ,
)* ] ) => {
pub static TABLE: [Opcode; JSOP_LIMIT] = [
$( Opcode::$op , )*
];
}
}
using_opcode_database!(define_table!());
impl Opcode {
/// Length of this instruction, in bytes.
pub fn instruction_length(self) -> usize {
macro_rules! select_length {
( [ $(
(
$op:ident , $op_snake:ident , $str:expr ,
$length:expr , $nuses:expr , $ndefs:expr , $format:expr
) ,
)* ] ) => {
match self {
$( Opcode::$op => $length , )*
}
}
}
using_opcode_database!(select_length!())
}
/// Number of stack slots consumed by this instruction, or -1 for variadic
/// instructions.
pub fn nuses(self) -> isize {
macro_rules! select_nuses {
( [ $(
(
$op:ident , $op_snake:ident , $str:expr ,
$length:expr , $nuses:expr , $ndefs:expr , $format:expr
) ,
)* ] ) => {
match self {
$( Opcode::$op => $nuses , )*
}
}
}
using_opcode_database!(select_nuses!())
}
pub fn ndefs(self) -> usize {
macro_rules! select_ndefs {
( [ $(
(
$op:ident , $op_snake:ident , $str:expr ,
$length:expr , $nuses:expr , $ndefs:expr , $format:expr
) ,
)* ] ) => {
match self {
$( Opcode::$op => $ndefs , )*
}
}
}
using_opcode_database!(select_ndefs!())
}
fn format_bits(self) -> u32 {
macro_rules! select_format {
( [ $(
(
$op:ident , $op_snake:ident , $str:expr ,
$length:expr , $nuses:expr , $ndefs:expr , $format:expr
) ,
)* ] ) => {
match self {
$( Opcode::$op => $format , )*
}
}
}
using_opcode_database!(select_format!())
}
pub fn has_ic_entry(self) -> bool {
self.format_bits() & JOF_IC != 0
}
pub fn has_ic_index(self) -> bool {
match self.format_bits() & JOF_TYPEMASK {
JOF_LOOPHEAD | JOF_ICINDEX => true,
_ => false,
}
}
pub fn has_argc(self) -> bool {
self.format_bits() & JOF_TYPEMASK == JOF_ARGC
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn table_matches() {
for (i, t) in TABLE.iter().enumerate() {
assert_eq!(i, t.to_byte() as usize);
}
}
}