duke@435: /* duke@435: * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * duke@435: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, duke@435: * CA 95054 USA or visit www.sun.com if you need additional information or duke@435: * have any questions. duke@435: * duke@435: */ duke@435: duke@435: class AdapterHandlerEntry; duke@435: class vframeStream; duke@435: duke@435: // Runtime is the base class for various runtime interfaces duke@435: // (InterpreterRuntime, CompilerRuntime, etc.). It provides duke@435: // shared functionality such as exception forwarding (C++ to duke@435: // Java exceptions), locking/unlocking mechanisms, statistical duke@435: // information, etc. duke@435: duke@435: class SharedRuntime: AllStatic { duke@435: private: duke@435: static methodHandle resolve_sub_helper(JavaThread *thread, duke@435: bool is_virtual, duke@435: bool is_optimized, TRAPS); duke@435: duke@435: // Shared stub locations duke@435: duke@435: static RuntimeStub* _wrong_method_blob; duke@435: static RuntimeStub* _ic_miss_blob; duke@435: static RuntimeStub* _resolve_opt_virtual_call_blob; duke@435: static RuntimeStub* _resolve_virtual_call_blob; duke@435: static RuntimeStub* _resolve_static_call_blob; duke@435: duke@435: static SafepointBlob* _polling_page_safepoint_handler_blob; duke@435: static SafepointBlob* _polling_page_return_handler_blob; duke@435: #ifdef COMPILER2 duke@435: static ExceptionBlob* _exception_blob; duke@435: static UncommonTrapBlob* _uncommon_trap_blob; duke@435: #endif // COMPILER2 duke@435: duke@435: #ifndef PRODUCT duke@435: duke@435: // Counters duke@435: static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) duke@435: duke@435: #endif // !PRODUCT duke@435: public: duke@435: // The following arithmetic routines are used on platforms that do duke@435: // not have machine instructions to implement their functionality. duke@435: // Do not remove these. duke@435: duke@435: // long arithmetics duke@435: static jlong lmul(jlong y, jlong x); duke@435: static jlong ldiv(jlong y, jlong x); duke@435: static jlong lrem(jlong y, jlong x); duke@435: duke@435: // float and double remainder duke@435: static jfloat frem(jfloat x, jfloat y); duke@435: static jdouble drem(jdouble x, jdouble y); duke@435: duke@435: // float conversion (needs to set appropriate rounding mode) duke@435: static jint f2i (jfloat x); duke@435: static jlong f2l (jfloat x); duke@435: static jint d2i (jdouble x); duke@435: static jlong d2l (jdouble x); duke@435: static jfloat d2f (jdouble x); duke@435: static jfloat l2f (jlong x); duke@435: static jdouble l2d (jlong x); duke@435: duke@435: // double trigonometrics and transcendentals duke@435: static jdouble dsin(jdouble x); duke@435: static jdouble dcos(jdouble x); duke@435: static jdouble dtan(jdouble x); duke@435: static jdouble dlog(jdouble x); duke@435: static jdouble dlog10(jdouble x); duke@435: static jdouble dexp(jdouble x); duke@435: static jdouble dpow(jdouble x, jdouble y); duke@435: duke@435: duke@435: // exception handling across interpreter/compiler boundaries duke@435: static address raw_exception_handler_for_return_address(address return_address); duke@435: static address exception_handler_for_return_address(address return_address); duke@435: duke@435: // exception handling and implicit exceptions duke@435: static address compute_compiled_exc_handler(nmethod* nm, address ret_pc, Handle& exception, duke@435: bool force_unwind, bool top_frame_only); duke@435: enum ImplicitExceptionKind { duke@435: IMPLICIT_NULL, duke@435: IMPLICIT_DIVIDE_BY_ZERO, duke@435: STACK_OVERFLOW duke@435: }; duke@435: static void throw_AbstractMethodError(JavaThread* thread); dcubed@451: static void throw_IncompatibleClassChangeError(JavaThread* thread); duke@435: static void throw_ArithmeticException(JavaThread* thread); duke@435: static void throw_NullPointerException(JavaThread* thread); duke@435: static void throw_NullPointerException_at_call(JavaThread* thread); duke@435: static void throw_StackOverflowError(JavaThread* thread); duke@435: static address continuation_for_implicit_exception(JavaThread* thread, duke@435: address faulting_pc, duke@435: ImplicitExceptionKind exception_kind); duke@435: duke@435: // Shared stub locations duke@435: static address get_poll_stub(address pc); duke@435: duke@435: static address get_ic_miss_stub() { duke@435: assert(_ic_miss_blob!= NULL, "oops"); duke@435: return _ic_miss_blob->instructions_begin(); duke@435: } duke@435: duke@435: static address get_handle_wrong_method_stub() { duke@435: assert(_wrong_method_blob!= NULL, "oops"); duke@435: return _wrong_method_blob->instructions_begin(); duke@435: } duke@435: duke@435: #ifdef COMPILER2 duke@435: static void generate_uncommon_trap_blob(void); duke@435: static UncommonTrapBlob* uncommon_trap_blob() { return _uncommon_trap_blob; } duke@435: #endif // COMPILER2 duke@435: duke@435: static address get_resolve_opt_virtual_call_stub(){ duke@435: assert(_resolve_opt_virtual_call_blob != NULL, "oops"); duke@435: return _resolve_opt_virtual_call_blob->instructions_begin(); duke@435: } duke@435: static address get_resolve_virtual_call_stub() { duke@435: assert(_resolve_virtual_call_blob != NULL, "oops"); duke@435: return _resolve_virtual_call_blob->instructions_begin(); duke@435: } duke@435: static address get_resolve_static_call_stub() { duke@435: assert(_resolve_static_call_blob != NULL, "oops"); duke@435: return _resolve_static_call_blob->instructions_begin(); duke@435: } duke@435: duke@435: static SafepointBlob* polling_page_return_handler_blob() { return _polling_page_return_handler_blob; } duke@435: static SafepointBlob* polling_page_safepoint_handler_blob() { return _polling_page_safepoint_handler_blob; } duke@435: duke@435: // Counters duke@435: #ifndef PRODUCT duke@435: static address nof_megamorphic_calls_addr() { return (address)&_nof_megamorphic_calls; } duke@435: #endif // PRODUCT duke@435: duke@435: // Helper routine for full-speed JVMTI exception throwing support duke@435: static void throw_and_post_jvmti_exception(JavaThread *thread, Handle h_exception); duke@435: static void throw_and_post_jvmti_exception(JavaThread *thread, symbolOop name, const char *message = NULL); duke@435: duke@435: // To be used as the entry point for unresolved native methods. duke@435: static address native_method_throw_unsatisfied_link_error_entry(); duke@435: duke@435: // bytecode tracing is only used by the TraceBytecodes duke@435: static intptr_t trace_bytecode(JavaThread* thread, intptr_t preserve_this_value, intptr_t tos, intptr_t tos2) PRODUCT_RETURN0; duke@435: duke@435: // Used to back off a spin lock that is under heavy contention duke@435: static void yield_all(JavaThread* thread, int attempts = 0); duke@435: duke@435: static oop retrieve_receiver( symbolHandle sig, frame caller ); duke@435: duke@435: static void verify_caller_frame(frame caller_frame, methodHandle callee_method) PRODUCT_RETURN; duke@435: static methodHandle find_callee_method_inside_interpreter(frame caller_frame, methodHandle caller_method, int bci) PRODUCT_RETURN_(return methodHandle();); duke@435: duke@435: static void register_finalizer(JavaThread* thread, oopDesc* obj); duke@435: duke@435: // dtrace notifications duke@435: static int dtrace_object_alloc(oopDesc* o); duke@435: static int dtrace_object_alloc_base(Thread* thread, oopDesc* o); duke@435: static int dtrace_method_entry(JavaThread* thread, methodOopDesc* m); duke@435: static int dtrace_method_exit(JavaThread* thread, methodOopDesc* m); duke@435: duke@435: // Utility method for retrieving the Java thread id, returns 0 if the duke@435: // thread is not a well formed Java thread. duke@435: static jlong get_java_tid(Thread* thread); duke@435: duke@435: duke@435: // used by native wrappers to reenable yellow if overflow happened in native code duke@435: static void reguard_yellow_pages(); duke@435: duke@435: /** duke@435: * Fill in the "X cannot be cast to a Y" message for ClassCastException duke@435: * duke@435: * @param thr the current thread duke@435: * @param name the name of the class of the object attempted to be cast duke@435: * @return the dynamically allocated exception message (must be freed duke@435: * by the caller using a resource mark) duke@435: * duke@435: * BCP must refer to the current 'checkcast' opcode for the frame duke@435: * on top of the stack. duke@435: * The caller (or one of it's callers) must use a ResourceMark duke@435: * in order to correctly free the result. duke@435: */ duke@435: static char* generate_class_cast_message(JavaThread* thr, const char* name); duke@435: duke@435: /** duke@435: * Fill in the "X cannot be cast to a Y" message for ClassCastException duke@435: * duke@435: * @param name the name of the class of the object attempted to be cast duke@435: * @param klass the name of the target klass attempt duke@435: * @return the dynamically allocated exception message (must be freed duke@435: * by the caller using a resource mark) duke@435: * duke@435: * This version does not require access the frame, so it can be called duke@435: * from interpreted code duke@435: * The caller (or one of it's callers) must use a ResourceMark duke@435: * in order to correctly free the result. duke@435: */ duke@435: static char* generate_class_cast_message(const char* name, const char* klass); duke@435: duke@435: // Resolves a call site- may patch in the destination of the call into the duke@435: // compiled code. duke@435: static methodHandle resolve_helper(JavaThread *thread, duke@435: bool is_virtual, duke@435: bool is_optimized, TRAPS); duke@435: duke@435: static void generate_stubs(void); duke@435: duke@435: private: duke@435: // deopt blob duke@435: static void generate_deopt_blob(void); duke@435: static DeoptimizationBlob* _deopt_blob; duke@435: duke@435: public: duke@435: static DeoptimizationBlob* deopt_blob(void) { return _deopt_blob; } duke@435: duke@435: // Resets a call-site in compiled code so it will get resolved again. duke@435: static methodHandle reresolve_call_site(JavaThread *thread, TRAPS); duke@435: duke@435: // In the code prolog, if the klass comparison fails, the inline cache duke@435: // misses and the call site is patched to megamorphic duke@435: static methodHandle handle_ic_miss_helper(JavaThread* thread, TRAPS); duke@435: duke@435: // Find the method that called us. duke@435: static methodHandle find_callee_method(JavaThread* thread, TRAPS); duke@435: duke@435: duke@435: private: duke@435: static Handle find_callee_info(JavaThread* thread, duke@435: Bytecodes::Code& bc, duke@435: CallInfo& callinfo, TRAPS); duke@435: static Handle find_callee_info_helper(JavaThread* thread, duke@435: vframeStream& vfst, duke@435: Bytecodes::Code& bc, duke@435: CallInfo& callinfo, TRAPS); duke@435: duke@435: static address clean_virtual_call_entry(); duke@435: static address clean_opt_virtual_call_entry(); duke@435: static address clean_static_call_entry(); duke@435: duke@435: public: duke@435: duke@435: duke@435: static void create_native_wrapper (JavaThread* thread, methodOop method); duke@435: duke@435: // Read the array of BasicTypes from a Java signature, and compute where duke@435: // compiled Java code would like to put the results. Values in reg_lo and duke@435: // reg_hi refer to 4-byte quantities. Values less than SharedInfo::stack0 are duke@435: // registers, those above refer to 4-byte stack slots. All stack slots are duke@435: // based off of the window top. SharedInfo::stack0 refers to the first usable duke@435: // slot in the bottom of the frame. SharedInfo::stack0+1 refers to the memory word duke@435: // 4-bytes higher. So for sparc because the register window save area is at duke@435: // the bottom of the frame the first 16 words will be skipped and SharedInfo::stack0 duke@435: // will be just above it. ( duke@435: // return value is the maximum number of VMReg stack slots the convention will use. duke@435: static int java_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed, int is_outgoing); duke@435: duke@435: // Ditto except for calling C duke@435: static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, int total_args_passed); duke@435: duke@435: // Generate I2C and C2I adapters. These adapters are simple argument marshalling duke@435: // blobs. Unlike adapters in the tiger and earlier releases the code in these duke@435: // blobs does not create a new frame and are therefore virtually invisible duke@435: // to the stack walking code. In general these blobs extend the callers stack duke@435: // as needed for the conversion of argument locations. duke@435: duke@435: // When calling a c2i blob the code will always call the interpreter even if duke@435: // by the time we reach the blob there is compiled code available. This allows duke@435: // the blob to pass the incoming stack pointer (the sender sp) in a known duke@435: // location for the interpreter to record. This is used by the frame code duke@435: // to correct the sender code to match up with the stack pointer when the duke@435: // thread left the compiled code. In addition it allows the interpreter duke@435: // to remove the space the c2i adapter allocated to do it argument conversion. duke@435: duke@435: // Although a c2i blob will always run interpreted even if compiled code is duke@435: // present if we see that compiled code is present the compiled call site duke@435: // will be patched/re-resolved so that later calls will run compiled. duke@435: duke@435: // Aditionally a c2i blob need to have a unverified entry because it can be reached duke@435: // in situations where the call site is an inlined cache site and may go megamorphic. duke@435: duke@435: // A i2c adapter is simpler than the c2i adapter. This is because it is assumed duke@435: // that the interpreter before it does any call dispatch will record the current duke@435: // stack pointer in the interpreter frame. On return it will restore the stack duke@435: // pointer as needed. This means the i2c adapter code doesn't need any special duke@435: // handshaking path with compiled code to keep the stack walking correct. duke@435: duke@435: static AdapterHandlerEntry* generate_i2c2i_adapters(MacroAssembler *_masm, duke@435: int total_args_passed, duke@435: int max_arg, duke@435: const BasicType *sig_bt, duke@435: const VMRegPair *regs); duke@435: duke@435: // OSR support duke@435: duke@435: // OSR_migration_begin will extract the jvm state from an interpreter duke@435: // frame (locals, monitors) and store the data in a piece of C heap duke@435: // storage. This then allows the interpreter frame to be removed from the duke@435: // stack and the OSR nmethod to be called. That method is called with a duke@435: // pointer to the C heap storage. This pointer is the return value from duke@435: // OSR_migration_begin. duke@435: duke@435: static intptr_t* OSR_migration_begin( JavaThread *thread); duke@435: duke@435: // OSR_migration_end is a trivial routine. It is called after the compiled duke@435: // method has extracted the jvm state from the C heap that OSR_migration_begin duke@435: // created. It's entire job is to simply free this storage. duke@435: static void OSR_migration_end ( intptr_t* buf); duke@435: duke@435: // Convert a sig into a calling convention register layout duke@435: // and find interesting things about it. duke@435: static VMRegPair* find_callee_arguments(symbolOop sig, bool is_static, int *arg_size); duke@435: static VMReg name_for_receiver(); duke@435: duke@435: // "Top of Stack" slots that may be unused by the calling convention but must duke@435: // otherwise be preserved. duke@435: // On Intel these are not necessary and the value can be zero. duke@435: // On Sparc this describes the words reserved for storing a register window duke@435: // when an interrupt occurs. duke@435: static uint out_preserve_stack_slots(); duke@435: duke@435: // Save and restore a native result duke@435: static void save_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); duke@435: static void restore_native_result(MacroAssembler *_masm, BasicType ret_type, int frame_slots ); duke@435: duke@435: // Generate a native wrapper for a given method. The method takes arguments duke@435: // in the Java compiled code convention, marshals them to the native duke@435: // convention (handlizes oops, etc), transitions to native, makes the call, duke@435: // returns to java state (possibly blocking), unhandlizes any result and duke@435: // returns. duke@435: static nmethod *generate_native_wrapper(MacroAssembler* masm, duke@435: methodHandle method, duke@435: int total_args_passed, duke@435: int max_arg, duke@435: BasicType *sig_bt, duke@435: VMRegPair *regs, duke@435: BasicType ret_type ); duke@435: duke@435: // A compiled caller has just called the interpreter, but compiled code duke@435: // exists. Patch the caller so he no longer calls into the interpreter. duke@435: static void fixup_callers_callsite(methodOopDesc* moop, address ret_pc); duke@435: duke@435: // Slow-path Locking and Unlocking duke@435: static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread); duke@435: static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock); duke@435: duke@435: // Resolving of calls duke@435: static address resolve_static_call_C (JavaThread *thread); duke@435: static address resolve_virtual_call_C (JavaThread *thread); duke@435: static address resolve_opt_virtual_call_C(JavaThread *thread); duke@435: duke@435: // arraycopy, the non-leaf version. (See StubRoutines for all the leaf calls.) duke@435: static void slow_arraycopy_C(oopDesc* src, jint src_pos, duke@435: oopDesc* dest, jint dest_pos, duke@435: jint length, JavaThread* thread); duke@435: duke@435: // handle ic miss with caller being compiled code duke@435: // wrong method handling (inline cache misses, zombie methods) duke@435: static address handle_wrong_method(JavaThread* thread); duke@435: static address handle_wrong_method_ic_miss(JavaThread* thread); duke@435: duke@435: #ifndef PRODUCT duke@435: duke@435: // Collect and print inline cache miss statistics duke@435: private: duke@435: enum { maxICmiss_count = 100 }; duke@435: static int _ICmiss_index; // length of IC miss histogram duke@435: static int _ICmiss_count[maxICmiss_count]; // miss counts duke@435: static address _ICmiss_at[maxICmiss_count]; // miss addresses duke@435: static void trace_ic_miss(address at); duke@435: duke@435: public: duke@435: static int _monitor_enter_ctr; // monitor enter slow duke@435: static int _monitor_exit_ctr; // monitor exit slow duke@435: static int _throw_null_ctr; // throwing a null-pointer exception duke@435: static int _ic_miss_ctr; // total # of IC misses duke@435: static int _wrong_method_ctr; duke@435: static int _resolve_static_ctr; duke@435: static int _resolve_virtual_ctr; duke@435: static int _resolve_opt_virtual_ctr; duke@435: static int _implicit_null_throws; duke@435: static int _implicit_div0_throws; duke@435: duke@435: static int _jbyte_array_copy_ctr; // Slow-path byte array copy duke@435: static int _jshort_array_copy_ctr; // Slow-path short array copy duke@435: static int _jint_array_copy_ctr; // Slow-path int array copy duke@435: static int _jlong_array_copy_ctr; // Slow-path long array copy duke@435: static int _oop_array_copy_ctr; // Slow-path oop array copy duke@435: static int _checkcast_array_copy_ctr; // Slow-path oop array copy, with cast duke@435: static int _unsafe_array_copy_ctr; // Slow-path includes alignment checks duke@435: static int _generic_array_copy_ctr; // Slow-path includes type decoding duke@435: static int _slow_array_copy_ctr; // Slow-path failed out to a method call duke@435: duke@435: static int _new_instance_ctr; // 'new' object requires GC duke@435: static int _new_array_ctr; // 'new' array requires GC duke@435: static int _multi1_ctr, _multi2_ctr, _multi3_ctr, _multi4_ctr, _multi5_ctr; duke@435: static int _find_handler_ctr; // find exception handler duke@435: static int _rethrow_ctr; // rethrow exception duke@435: static int _mon_enter_stub_ctr; // monitor enter stub duke@435: static int _mon_exit_stub_ctr; // monitor exit stub duke@435: static int _mon_enter_ctr; // monitor enter slow duke@435: static int _mon_exit_ctr; // monitor exit slow duke@435: static int _partial_subtype_ctr; // SubRoutines::partial_subtype_check duke@435: duke@435: // Statistics code duke@435: // stats for "normal" compiled calls (non-interface) duke@435: static int _nof_normal_calls; // total # of calls duke@435: static int _nof_optimized_calls; // total # of statically-bound calls duke@435: static int _nof_inlined_calls; // total # of inlined normal calls duke@435: static int _nof_static_calls; // total # of calls to static methods or super methods (invokespecial) duke@435: static int _nof_inlined_static_calls; // total # of inlined static calls duke@435: // stats for compiled interface calls duke@435: static int _nof_interface_calls; // total # of compiled calls duke@435: static int _nof_optimized_interface_calls; // total # of statically-bound interface calls duke@435: static int _nof_inlined_interface_calls; // total # of inlined interface calls duke@435: static int _nof_megamorphic_interface_calls;// total # of megamorphic interface calls duke@435: // stats for runtime exceptions duke@435: static int _nof_removable_exceptions; // total # of exceptions that could be replaced by branches due to inlining duke@435: duke@435: public: // for compiler duke@435: static address nof_normal_calls_addr() { return (address)&_nof_normal_calls; } duke@435: static address nof_optimized_calls_addr() { return (address)&_nof_optimized_calls; } duke@435: static address nof_inlined_calls_addr() { return (address)&_nof_inlined_calls; } duke@435: static address nof_static_calls_addr() { return (address)&_nof_static_calls; } duke@435: static address nof_inlined_static_calls_addr() { return (address)&_nof_inlined_static_calls; } duke@435: static address nof_interface_calls_addr() { return (address)&_nof_interface_calls; } duke@435: static address nof_optimized_interface_calls_addr() { return (address)&_nof_optimized_interface_calls; } duke@435: static address nof_inlined_interface_calls_addr() { return (address)&_nof_inlined_interface_calls; } duke@435: static address nof_megamorphic_interface_calls_addr() { return (address)&_nof_megamorphic_interface_calls; } duke@435: static void print_call_statistics(int comp_total); duke@435: static void print_statistics(); duke@435: static void print_ic_miss_histogram(); duke@435: duke@435: #endif // PRODUCT duke@435: }; duke@435: duke@435: duke@435: // --------------------------------------------------------------------------- duke@435: // Implementation of AdapterHandlerLibrary duke@435: // duke@435: // This library manages argument marshaling adapters and native wrappers. duke@435: // There are 2 flavors of adapters: I2C and C2I. duke@435: // duke@435: // The I2C flavor takes a stock interpreted call setup, marshals the arguments duke@435: // for a Java-compiled call, and jumps to Rmethod-> code()-> duke@435: // instructions_begin(). It is broken to call it without an nmethod assigned. duke@435: // The usual behavior is to lift any register arguments up out of the stack duke@435: // and possibly re-pack the extra arguments to be contigious. I2C adapters duke@435: // will save what the interpreter's stack pointer will be after arguments are duke@435: // popped, then adjust the interpreter's frame size to force alignment and duke@435: // possibly to repack the arguments. After re-packing, it jumps to the duke@435: // compiled code start. There are no safepoints in this adapter code and a GC duke@435: // cannot happen while marshaling is in progress. duke@435: // duke@435: // The C2I flavor takes a stock compiled call setup plus the target method in duke@435: // Rmethod, marshals the arguments for an interpreted call and jumps to duke@435: // Rmethod->_i2i_entry. On entry, the interpreted frame has not yet been duke@435: // setup. Compiled frames are fixed-size and the args are likely not in the duke@435: // right place. Hence all the args will likely be copied into the duke@435: // interpreter's frame, forcing that frame to grow. The compiled frame's duke@435: // outgoing stack args will be dead after the copy. duke@435: // duke@435: // Native wrappers, like adapters, marshal arguments. Unlike adapters they duke@435: // also perform an offical frame push & pop. They have a call to the native duke@435: // routine in their middles and end in a return (instead of ending in a jump). duke@435: // The native wrappers are stored in real nmethods instead of the BufferBlobs duke@435: // used by the adapters. The code generation happens here because it's very duke@435: // similar to what the adapters have to do. duke@435: duke@435: class AdapterHandlerEntry : public CHeapObj { duke@435: private: duke@435: address _i2c_entry; duke@435: address _c2i_entry; duke@435: address _c2i_unverified_entry; duke@435: duke@435: public: duke@435: AdapterHandlerEntry(address i2c_entry, address c2i_entry, address c2i_unverified_entry): duke@435: _i2c_entry(i2c_entry), duke@435: _c2i_entry(c2i_entry), duke@435: _c2i_unverified_entry(c2i_unverified_entry) { duke@435: } duke@435: // The name we give all buffer blobs duke@435: static const char* name; duke@435: duke@435: address get_i2c_entry() { return _i2c_entry; } duke@435: address get_c2i_entry() { return _c2i_entry; } duke@435: address get_c2i_unverified_entry() { return _c2i_unverified_entry; } duke@435: void relocate(address new_base); duke@435: #ifndef PRODUCT duke@435: void print(); duke@435: #endif /* PRODUCT */ duke@435: }; duke@435: duke@435: duke@435: class AdapterHandlerLibrary: public AllStatic { duke@435: private: duke@435: enum { duke@435: AbstractMethodHandler = 1 // special handler for abstract methods duke@435: }; duke@435: static GrowableArray* _fingerprints; // the fingerprint collection duke@435: static GrowableArray * _handlers; // the corresponding handlers duke@435: static u_char _buffer[]; // the temporary code buffer duke@435: static void initialize(); duke@435: static AdapterHandlerEntry* get_entry( int index ) { return _handlers->at(index); } duke@435: static int get_create_adapter_index(methodHandle method); duke@435: static address get_i2c_entry( int index ) { return get_entry(index)->get_i2c_entry(); } duke@435: static address get_c2i_entry( int index ) { return get_entry(index)->get_c2i_entry(); } duke@435: static address get_c2i_unverified_entry( int index ) { return get_entry(index)->get_c2i_unverified_entry(); } duke@435: duke@435: public: duke@435: static nmethod* create_native_wrapper(methodHandle method); duke@435: static AdapterHandlerEntry* get_adapter(methodHandle method) { return get_entry(get_create_adapter_index(method)); } duke@435: duke@435: #ifndef PRODUCT duke@435: static void print_handler(CodeBlob* b); duke@435: static bool contains(CodeBlob* b); duke@435: #endif /* PRODUCT */ duke@435: duke@435: };