duke@435: /* never@3500: * Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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: * trims@1907: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA trims@1907: * or visit www.oracle.com if you need additional information or have any trims@1907: * questions. duke@435: * duke@435: */ duke@435: stefank@2314: #ifndef SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP stefank@2314: #define SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP stefank@2314: stefank@2314: #include "interpreter/bytecodeHistogram.hpp" stefank@2314: #include "interpreter/bytecodeTracer.hpp" stefank@2314: #include "interpreter/linkResolver.hpp" stefank@2314: #include "memory/allocation.hpp" stefank@2314: #include "memory/resourceArea.hpp" stefank@2314: #include "runtime/threadLocalStorage.hpp" stefank@2314: #include "utilities/hashtable.hpp" jprovino@4542: #include "utilities/macros.hpp" stefank@2314: duke@435: class AdapterHandlerEntry; never@1622: class AdapterHandlerTable; never@1622: class AdapterFingerPrint; 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 { never@3108: friend class VMStructs; never@3108: 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: never@2950: static RuntimeStub* _wrong_method_blob; never@2950: static RuntimeStub* _ic_miss_blob; never@2950: static RuntimeStub* _resolve_opt_virtual_call_blob; never@2950: static RuntimeStub* _resolve_virtual_call_blob; never@2950: static RuntimeStub* _resolve_static_call_blob; duke@435: never@2950: static DeoptimizationBlob* _deopt_blob; never@2895: kvn@4103: static SafepointBlob* _polling_page_vectors_safepoint_handler_blob; never@2950: static SafepointBlob* _polling_page_safepoint_handler_blob; never@2950: static SafepointBlob* _polling_page_return_handler_blob; never@2950: duke@435: #ifdef COMPILER2 never@2950: static UncommonTrapBlob* _uncommon_trap_blob; duke@435: #endif // COMPILER2 duke@435: duke@435: #ifndef PRODUCT duke@435: // Counters duke@435: static int _nof_megamorphic_calls; // total # of megamorphic calls (through vtable) never@2950: #endif // !PRODUCT duke@435: never@2950: private: kvn@4103: enum { POLL_AT_RETURN, POLL_AT_LOOP, POLL_AT_VECTOR_LOOP }; kvn@4103: static SafepointBlob* generate_handler_blob(address call_ptr, int poll_type); never@2950: static RuntimeStub* generate_resolve_blob(address destination, const char* name); never@2950: duke@435: public: never@2950: static void generate_stubs(void); kamg@551: kamg@551: // max bytes for each dtrace string parameter kamg@551: enum { max_dtrace_string_size = 256 }; kamg@551: 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: bobv@2036: #ifdef __SOFTFP__ bobv@2036: static jfloat fadd(jfloat x, jfloat y); bobv@2036: static jfloat fsub(jfloat x, jfloat y); bobv@2036: static jfloat fmul(jfloat x, jfloat y); bobv@2036: static jfloat fdiv(jfloat x, jfloat y); bobv@2036: bobv@2036: static jdouble dadd(jdouble x, jdouble y); bobv@2036: static jdouble dsub(jdouble x, jdouble y); bobv@2036: static jdouble dmul(jdouble x, jdouble y); bobv@2036: static jdouble ddiv(jdouble x, jdouble y); bobv@2036: #endif // __SOFTFP__ bobv@2036: 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: bobv@2036: #ifdef __SOFTFP__ bobv@2036: static jfloat i2f (jint x); bobv@2036: static jdouble i2d (jint x); bobv@2036: static jdouble f2d (jfloat x); bobv@2036: #endif // __SOFTFP__ bobv@2036: 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: bobv@2036: #if defined(__SOFTFP__) || defined(E500V2) bobv@2036: static double dabs(double f); bobv@2223: #endif bobv@2223: goetz@6440: #if defined(__SOFTFP__) || defined(PPC32) bobv@2036: static double dsqrt(double f); bobv@2036: #endif bobv@2036: bobv@2036: #ifdef __SOFTFP__ bobv@2036: // C++ compiler generates soft float instructions as well as passing bobv@2036: // float and double in registers. bobv@2036: static int fcmpl(float x, float y); bobv@2036: static int fcmpg(float x, float y); bobv@2036: static int dcmpl(double x, double y); bobv@2036: static int dcmpg(double x, double y); bobv@2036: bobv@2036: static int unordered_fcmplt(float x, float y); bobv@2036: static int unordered_dcmplt(double x, double y); bobv@2036: static int unordered_fcmple(float x, float y); bobv@2036: static int unordered_dcmple(double x, double y); bobv@2036: static int unordered_fcmpge(float x, float y); bobv@2036: static int unordered_dcmpge(double x, double y); bobv@2036: static int unordered_fcmpgt(float x, float y); bobv@2036: static int unordered_dcmpgt(double x, double y); bobv@2036: bobv@2036: static float fneg(float f); bobv@2036: static double dneg(double f); bobv@2036: #endif bobv@2036: duke@435: // exception handling across interpreter/compiler boundaries twisti@1730: static address raw_exception_handler_for_return_address(JavaThread* thread, address return_address); twisti@1730: static address exception_handler_for_return_address(JavaThread* thread, address return_address); duke@435: jprovino@4542: #if INCLUDE_ALL_GCS ysr@777: // G1 write barriers ysr@777: static void g1_wb_pre(oopDesc* orig, JavaThread *thread); ysr@777: static void g1_wb_post(void* card_addr, JavaThread* thread); jprovino@4542: #endif // INCLUDE_ALL_GCS ysr@777: 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"); twisti@2103: return _ic_miss_blob->entry_point(); duke@435: } duke@435: duke@435: static address get_handle_wrong_method_stub() { duke@435: assert(_wrong_method_blob!= NULL, "oops"); twisti@2103: return _wrong_method_blob->entry_point(); 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"); twisti@2103: return _resolve_opt_virtual_call_blob->entry_point(); duke@435: } duke@435: static address get_resolve_virtual_call_stub() { duke@435: assert(_resolve_virtual_call_blob != NULL, "oops"); twisti@2103: return _resolve_virtual_call_blob->entry_point(); duke@435: } duke@435: static address get_resolve_static_call_stub() { duke@435: assert(_resolve_static_call_blob != NULL, "oops"); twisti@2103: return _resolve_static_call_blob->entry_point(); 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; } kvn@4103: static SafepointBlob* polling_page_vectors_safepoint_handler_blob() { return _polling_page_vectors_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); coleenp@2497: static void throw_and_post_jvmti_exception(JavaThread *thread, Symbol* name, const char *message = NULL); duke@435: dcubed@1045: // RedefineClasses() tracing support for obsolete method entry coleenp@4037: static int rc_trace_method_entry(JavaThread* thread, Method* m); dcubed@1045: duke@435: // To be used as the entry point for unresolved native methods. duke@435: static address native_method_throw_unsatisfied_link_error_entry(); twisti@3974: static address native_method_throw_unsupported_operation_exception_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: coleenp@2497: static oop retrieve_receiver( Symbol* sig, frame caller ); 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); coleenp@4037: static int dtrace_method_entry(JavaThread* thread, Method* m); coleenp@4037: static int dtrace_method_exit(JavaThread* thread, Method* 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 jrose@1145: * @param gripe the specific kind of problem being reported 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: */ jrose@1145: static char* generate_class_cast_message(const char* name, const char* klass, jrose@1145: const char* gripe = " cannot be cast to "); 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: private: duke@435: // deopt blob duke@435: static void generate_deopt_blob(void); 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: // 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. twisti@4101: static int java_calling_convention(const BasicType* sig_bt, VMRegPair* regs, int total_args_passed, int is_outgoing); twisti@4101: twisti@4101: static void check_member_name_argument_is_last_argument(methodHandle method, twisti@4101: const BasicType* sig_bt, twisti@4101: const VMRegPair* regs) NOT_DEBUG_RETURN; duke@435: duke@435: // Ditto except for calling C goetz@6466: // goetz@6466: // C argument in register AND stack slot. goetz@6466: // Some architectures require that an argument must be passed in a register goetz@6466: // AND in a stack slot. These architectures provide a second VMRegPair array goetz@6466: // to be filled by the c_calling_convention method. On other architectures, goetz@6466: // NULL is being passed as the second VMRegPair array, so arguments are either goetz@6466: // passed in a register OR in a stack slot. goetz@6466: static int c_calling_convention(const BasicType *sig_bt, VMRegPair *regs, VMRegPair *regs2, goetz@6466: int total_args_passed); duke@435: goetz@6468: // Compute the new number of arguments in the signature if 32 bit ints goetz@6468: // must be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs goetz@6468: // is true. goetz@6468: static int convert_ints_to_longints_argcnt(int in_args_count, BasicType* in_sig_bt); goetz@6468: // Adapt a method's signature if it contains 32 bit integers that must goetz@6468: // be converted to longs. Needed if CCallingConventionRequiresIntsAsLongs goetz@6468: // is true. goetz@6468: static void convert_ints_to_longints(int i2l_argcnt, int& in_args_count, goetz@6468: BasicType*& in_sig_bt, VMRegPair*& in_regs); goetz@6468: 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 goetz@6468: // to remove the space the c2i adapter allocated to do its 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, never@1622: const VMRegPair *regs, never@1622: AdapterFingerPrint* fingerprint); 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. roland@5222: static VMRegPair* find_callee_arguments(Symbol* sig, bool has_receiver, bool has_appendix, 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: kvn@4103: // Is vector's size (in bytes) bigger than a size saved by default? kvn@4103: // For example, on x86 16 bytes XMM registers are saved by default. kvn@4103: static bool is_wide_vector(int size); kvn@4103: 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. twisti@3969: // twisti@3969: // The wrapper may contain special-case code if the given method twisti@3969: // is a JNI critical method, or a compiled method handle adapter, twisti@3969: // such as _invokeBasic, _linkToVirtual, etc. twisti@4101: static nmethod* generate_native_wrapper(MacroAssembler* masm, duke@435: methodHandle method, twisti@2687: int compile_id, twisti@4101: BasicType* sig_bt, twisti@4101: VMRegPair* regs, duke@435: BasicType ret_type ); duke@435: never@3500: // Block before entering a JNI critical method never@3500: static void block_for_jni_critical(JavaThread* thread); never@3500: kamg@551: #ifdef HAVE_DTRACE_H kamg@551: // Generate a dtrace wrapper for a given method. The method takes arguments kamg@551: // in the Java compiled code convention, marshals them to the native kamg@551: // convention (handlizes oops, etc), transitions to native, makes the call, kamg@551: // returns to java state (possibly blocking), unhandlizes any result and kamg@551: // returns. kamg@551: static nmethod *generate_dtrace_nmethod(MacroAssembler* masm, kamg@551: methodHandle method); kamg@551: kamg@551: // dtrace support to convert a Java string to utf8 kamg@551: static void get_utf(oopDesc* src, address dst); kamg@551: #endif // def HAVE_DTRACE_H kamg@551: 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. coleenp@4037: static void fixup_callers_callsite(Method* 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: // twisti@2103: // The I2C flavor takes a stock interpreted call setup, marshals the twisti@2103: // arguments for a Java-compiled call, and jumps to Rmethod-> code()-> twisti@2103: // code_begin(). It is broken to call it without an nmethod assigned. twisti@2103: // The usual behavior is to lift any register arguments up out of the twisti@2103: // stack and possibly re-pack the extra arguments to be contigious. twisti@2103: // I2C adapters will save what the interpreter's stack pointer will be twisti@2103: // after arguments are popped, then adjust the interpreter's frame twisti@2103: // size to force alignment and possibly to repack the arguments. twisti@2103: // After re-packing, it jumps to the compiled code start. There are twisti@2103: // no safepoints in this adapter code and a GC cannot happen while twisti@2103: // 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: zgu@3900: class AdapterHandlerEntry : public BasicHashtableEntry { never@1622: friend class AdapterHandlerTable; never@1622: duke@435: private: never@1622: AdapterFingerPrint* _fingerprint; duke@435: address _i2c_entry; duke@435: address _c2i_entry; duke@435: address _c2i_unverified_entry; duke@435: never@1642: #ifdef ASSERT never@1642: // Captures code and signature used to generate this adapter when never@1642: // verifing adapter equivalence. never@1642: unsigned char* _saved_code; never@1642: int _code_length; never@1642: BasicType* _saved_sig; never@1642: int _total_args_passed; never@1642: #endif never@1642: never@1622: void init(AdapterFingerPrint* fingerprint, address i2c_entry, address c2i_entry, address c2i_unverified_entry) { never@1622: _fingerprint = fingerprint; never@1622: _i2c_entry = i2c_entry; never@1622: _c2i_entry = c2i_entry; never@1622: _c2i_unverified_entry = c2i_unverified_entry; never@1642: #ifdef ASSERT never@1642: _saved_code = NULL; never@1642: _code_length = 0; never@1642: _saved_sig = NULL; never@1642: _total_args_passed = 0; never@1642: #endif never@1622: } never@1622: never@1642: void deallocate(); never@1642: never@1622: // should never be used never@1622: AdapterHandlerEntry(); never@1622: duke@435: public: twisti@3969: address get_i2c_entry() const { return _i2c_entry; } twisti@3969: address get_c2i_entry() const { return _c2i_entry; } twisti@3969: address get_c2i_unverified_entry() const { return _c2i_unverified_entry; } kamg@551: twisti@3969: address base_address(); duke@435: void relocate(address new_base); never@1622: twisti@3969: AdapterFingerPrint* fingerprint() const { return _fingerprint; } never@1622: never@1622: AdapterHandlerEntry* next() { zgu@3900: return (AdapterHandlerEntry*)BasicHashtableEntry::next(); never@1622: } never@1622: never@1642: #ifdef ASSERT never@1642: // Used to verify that code generated for shared adapters is equivalent never@1642: void save_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); never@1642: bool compare_code(unsigned char* code, int length, int total_args_passed, BasicType* sig_bt); never@1642: #endif never@1642: twisti@3969: //virtual void print_on(outputStream* st) const; DO NOT USE twisti@3969: void print_adapter_on(outputStream* st) const; duke@435: }; duke@435: duke@435: class AdapterHandlerLibrary: public AllStatic { duke@435: private: kvn@1177: static BufferBlob* _buffer; // the temporary code buffer in CodeCache never@1622: static AdapterHandlerTable* _adapters; never@1622: static AdapterHandlerEntry* _abstract_method_handler; kvn@1177: static BufferBlob* buffer_blob(); duke@435: static void initialize(); duke@435: duke@435: public: never@1622: never@1622: static AdapterHandlerEntry* new_entry(AdapterFingerPrint* fingerprint, never@1622: address i2c_entry, address c2i_entry, address c2i_unverified_entry); twisti@2687: static nmethod* create_native_wrapper(methodHandle method, int compile_id); never@1622: static AdapterHandlerEntry* get_adapter(methodHandle method); never@1622: kamg@551: #ifdef HAVE_DTRACE_H kamg@551: static nmethod* create_dtrace_nmethod (methodHandle method); kamg@551: #endif // HAVE_DTRACE_H duke@435: bobv@2036: static void print_handler(CodeBlob* b) { print_handler_on(tty, b); } bobv@2036: static void print_handler_on(outputStream* st, CodeBlob* b); bobv@2036: static bool contains(CodeBlob* b); duke@435: #ifndef PRODUCT never@1622: static void print_statistics(); duke@435: #endif /* PRODUCT */ duke@435: duke@435: }; stefank@2314: stefank@2314: #endif // SHARE_VM_RUNTIME_SHAREDRUNTIME_HPP