Mercurial > hg > graal-compiler
diff src/share/vm/opto/runtime.cpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | 37f87013dfd8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/opto/runtime.cpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,1177 @@ +/* + * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +#include "incls/_precompiled.incl" +#include "incls/_runtime.cpp.incl" + + +// For debugging purposes: +// To force FullGCALot inside a runtime function, add the following two lines +// +// Universe::release_fullgc_alot_dummy(); +// MarkSweep::invoke(0, "Debugging"); +// +// At command line specify the parameters: -XX:+FullGCALot -XX:FullGCALotStart=100000000 + + + + +// Compiled code entry points +address OptoRuntime::_new_instance_Java = NULL; +address OptoRuntime::_new_array_Java = NULL; +address OptoRuntime::_multianewarray2_Java = NULL; +address OptoRuntime::_multianewarray3_Java = NULL; +address OptoRuntime::_multianewarray4_Java = NULL; +address OptoRuntime::_multianewarray5_Java = NULL; +address OptoRuntime::_vtable_must_compile_Java = NULL; +address OptoRuntime::_complete_monitor_locking_Java = NULL; +address OptoRuntime::_rethrow_Java = NULL; + +address OptoRuntime::_slow_arraycopy_Java = NULL; +address OptoRuntime::_register_finalizer_Java = NULL; + +# ifdef ENABLE_ZAP_DEAD_LOCALS +address OptoRuntime::_zap_dead_Java_locals_Java = NULL; +address OptoRuntime::_zap_dead_native_locals_Java = NULL; +# endif + + +// This should be called in an assertion at the start of OptoRuntime routines +// which are entered from compiled code (all of them) +#ifndef PRODUCT +static bool check_compiled_frame(JavaThread* thread) { + assert(thread->last_frame().is_runtime_frame(), "cannot call runtime directly from compiled code"); +#ifdef ASSERT + RegisterMap map(thread, false); + frame caller = thread->last_frame().sender(&map); + assert(caller.is_compiled_frame(), "not being called from compiled like code"); +#endif /* ASSERT */ + return true; +} +#endif + + +#define gen(env, var, type_func_gen, c_func, fancy_jump, pass_tls, save_arg_regs, return_pc) \ + var = generate_stub(env, type_func_gen, CAST_FROM_FN_PTR(address, c_func), #var, fancy_jump, pass_tls, save_arg_regs, return_pc) + +void OptoRuntime::generate(ciEnv* env) { + + generate_exception_blob(); + + // Note: tls: Means fetching the return oop out of the thread-local storage + // + // variable/name type-function-gen , runtime method ,fncy_jp, tls,save_args,retpc + // ------------------------------------------------------------------------------------------------------------------------------- + gen(env, _new_instance_Java , new_instance_Type , new_instance_C , 0 , true , false, false); + gen(env, _new_array_Java , new_array_Type , new_array_C , 0 , true , false, false); + gen(env, _multianewarray2_Java , multianewarray2_Type , multianewarray2_C , 0 , true , false, false); + gen(env, _multianewarray3_Java , multianewarray3_Type , multianewarray3_C , 0 , true , false, false); + gen(env, _multianewarray4_Java , multianewarray4_Type , multianewarray4_C , 0 , true , false, false); + gen(env, _multianewarray5_Java , multianewarray5_Type , multianewarray5_C , 0 , true , false, false); + gen(env, _complete_monitor_locking_Java , complete_monitor_enter_Type , SharedRuntime::complete_monitor_locking_C , 0 , false, false, false); + gen(env, _rethrow_Java , rethrow_Type , rethrow_C , 2 , true , false, true ); + + gen(env, _slow_arraycopy_Java , slow_arraycopy_Type , SharedRuntime::slow_arraycopy_C , 0 , false, false, false); + gen(env, _register_finalizer_Java , register_finalizer_Type , register_finalizer , 0 , false, false, false); + +# ifdef ENABLE_ZAP_DEAD_LOCALS + gen(env, _zap_dead_Java_locals_Java , zap_dead_locals_Type , zap_dead_Java_locals_C , 0 , false, true , false ); + gen(env, _zap_dead_native_locals_Java , zap_dead_locals_Type , zap_dead_native_locals_C , 0 , false, true , false ); +# endif + +} + +#undef gen + + +// Helper method to do generation of RunTimeStub's +address OptoRuntime::generate_stub( ciEnv* env, + TypeFunc_generator gen, address C_function, + const char *name, int is_fancy_jump, + bool pass_tls, + bool save_argument_registers, + bool return_pc ) { + ResourceMark rm; + Compile C( env, gen, C_function, name, is_fancy_jump, pass_tls, save_argument_registers, return_pc ); + return C.stub_entry_point(); +} + +const char* OptoRuntime::stub_name(address entry) { +#ifndef PRODUCT + CodeBlob* cb = CodeCache::find_blob(entry); + RuntimeStub* rs =(RuntimeStub *)cb; + assert(rs != NULL && rs->is_runtime_stub(), "not a runtime stub"); + return rs->name(); +#else + // Fast implementation for product mode (maybe it should be inlined too) + return "runtime stub"; +#endif +} + + +//============================================================================= +// Opto compiler runtime routines +//============================================================================= + + +//=============================allocation====================================== +// We failed the fast-path allocation. Now we need to do a scavenge or GC +// and try allocation again. + +void OptoRuntime::do_eager_card_mark(JavaThread* thread) { + // After any safepoint, just before going back to compiled code, + // we perform a card mark. This lets the compiled code omit + // card marks for initialization of new objects. + // Keep this code consistent with GraphKit::store_barrier. + + oop new_obj = thread->vm_result(); + if (new_obj == NULL) return; + + assert(Universe::heap()->can_elide_tlab_store_barriers(), + "compiler must check this first"); + new_obj = Universe::heap()->new_store_barrier(new_obj); + thread->set_vm_result(new_obj); +} + +// object allocation +JRT_BLOCK_ENTRY(void, OptoRuntime::new_instance_C(klassOopDesc* klass, JavaThread* thread)) + JRT_BLOCK; +#ifndef PRODUCT + SharedRuntime::_new_instance_ctr++; // new instance requires GC +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + + // These checks are cheap to make and support reflective allocation. + int lh = Klass::cast(klass)->layout_helper(); + if (Klass::layout_helper_needs_slow_path(lh) + || !instanceKlass::cast(klass)->is_initialized()) { + KlassHandle kh(THREAD, klass); + kh->check_valid_for_instantiation(false, THREAD); + if (!HAS_PENDING_EXCEPTION) { + instanceKlass::cast(kh())->initialize(THREAD); + } + if (!HAS_PENDING_EXCEPTION) { + klass = kh(); + } else { + klass = NULL; + } + } + + if (klass != NULL) { + // Scavenge and allocate an instance. + oop result = instanceKlass::cast(klass)->allocate_instance(THREAD); + thread->set_vm_result(result); + + // Pass oops back through thread local storage. Our apparent type to Java + // is that we return an oop, but we can block on exit from this routine and + // a GC can trash the oop in C's return register. The generated stub will + // fetch the oop from TLS after any possible GC. + } + + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + JRT_BLOCK_END; + + if (GraphKit::use_ReduceInitialCardMarks()) { + // do them now so we don't have to do them on the fast path + do_eager_card_mark(thread); + } +JRT_END + + +// array allocation +JRT_BLOCK_ENTRY(void, OptoRuntime::new_array_C(klassOopDesc* array_type, int len, JavaThread *thread)) + JRT_BLOCK; +#ifndef PRODUCT + SharedRuntime::_new_array_ctr++; // new array requires GC +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + + // Scavenge and allocate an instance. + oop result; + + if (Klass::cast(array_type)->oop_is_typeArray()) { + // The oopFactory likes to work with the element type. + // (We could bypass the oopFactory, since it doesn't add much value.) + BasicType elem_type = typeArrayKlass::cast(array_type)->element_type(); + result = oopFactory::new_typeArray(elem_type, len, THREAD); + } else { + // Although the oopFactory likes to work with the elem_type, + // the compiler prefers the array_type, since it must already have + // that latter value in hand for the fast path. + klassOopDesc* elem_type = objArrayKlass::cast(array_type)->element_klass(); + result = oopFactory::new_objArray(elem_type, len, THREAD); + } + + // Pass oops back through thread local storage. Our apparent type to Java + // is that we return an oop, but we can block on exit from this routine and + // a GC can trash the oop in C's return register. The generated stub will + // fetch the oop from TLS after any possible GC. + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + thread->set_vm_result(result); + JRT_BLOCK_END; + + if (GraphKit::use_ReduceInitialCardMarks()) { + // do them now so we don't have to do them on the fast path + do_eager_card_mark(thread); + } +JRT_END + +// Note: multianewarray for one dimension is handled inline by GraphKit::new_array. + +// multianewarray for 2 dimensions +JRT_ENTRY(void, OptoRuntime::multianewarray2_C(klassOopDesc* elem_type, int len1, int len2, JavaThread *thread)) +#ifndef PRODUCT + SharedRuntime::_multi2_ctr++; // multianewarray for 1 dimension +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + assert(oop(elem_type)->is_klass(), "not a class"); + jint dims[2]; + dims[0] = len1; + dims[1] = len2; + oop obj = arrayKlass::cast(elem_type)->multi_allocate(2, dims, THREAD); + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + thread->set_vm_result(obj); +JRT_END + +// multianewarray for 3 dimensions +JRT_ENTRY(void, OptoRuntime::multianewarray3_C(klassOopDesc* elem_type, int len1, int len2, int len3, JavaThread *thread)) +#ifndef PRODUCT + SharedRuntime::_multi3_ctr++; // multianewarray for 1 dimension +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + assert(oop(elem_type)->is_klass(), "not a class"); + jint dims[3]; + dims[0] = len1; + dims[1] = len2; + dims[2] = len3; + oop obj = arrayKlass::cast(elem_type)->multi_allocate(3, dims, THREAD); + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + thread->set_vm_result(obj); +JRT_END + +// multianewarray for 4 dimensions +JRT_ENTRY(void, OptoRuntime::multianewarray4_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, JavaThread *thread)) +#ifndef PRODUCT + SharedRuntime::_multi4_ctr++; // multianewarray for 1 dimension +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + assert(oop(elem_type)->is_klass(), "not a class"); + jint dims[4]; + dims[0] = len1; + dims[1] = len2; + dims[2] = len3; + dims[3] = len4; + oop obj = arrayKlass::cast(elem_type)->multi_allocate(4, dims, THREAD); + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + thread->set_vm_result(obj); +JRT_END + +// multianewarray for 5 dimensions +JRT_ENTRY(void, OptoRuntime::multianewarray5_C(klassOopDesc* elem_type, int len1, int len2, int len3, int len4, int len5, JavaThread *thread)) +#ifndef PRODUCT + SharedRuntime::_multi5_ctr++; // multianewarray for 1 dimension +#endif + assert(check_compiled_frame(thread), "incorrect caller"); + assert(oop(elem_type)->is_klass(), "not a class"); + jint dims[5]; + dims[0] = len1; + dims[1] = len2; + dims[2] = len3; + dims[3] = len4; + dims[4] = len5; + oop obj = arrayKlass::cast(elem_type)->multi_allocate(5, dims, THREAD); + deoptimize_caller_frame(thread, HAS_PENDING_EXCEPTION); + thread->set_vm_result(obj); +JRT_END + +const TypeFunc *OptoRuntime::new_instance_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + + +const TypeFunc *OptoRuntime::athrow_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Klass to be allocated + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); + + return TypeFunc::make(domain, range); +} + + +const TypeFunc *OptoRuntime::new_array_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass + fields[TypeFunc::Parms+1] = TypeInt::INT; // array size + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc *OptoRuntime::multianewarray_Type(int ndim) { + // create input type (domain) + const int nargs = ndim + 1; + const Type **fields = TypeTuple::fields(nargs); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // element klass + for( int i = 1; i < nargs; i++ ) + fields[TypeFunc::Parms + i] = TypeInt::INT; // array size + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+nargs, fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeRawPtr::NOTNULL; // Returned oop + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc *OptoRuntime::multianewarray2_Type() { + return multianewarray_Type(2); +} + +const TypeFunc *OptoRuntime::multianewarray3_Type() { + return multianewarray_Type(3); +} + +const TypeFunc *OptoRuntime::multianewarray4_Type() { + return multianewarray_Type(4); +} + +const TypeFunc *OptoRuntime::multianewarray5_Type() { + return multianewarray_Type(5); +} + +const TypeFunc *OptoRuntime::uncommon_trap_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + // symbolOop name of class to be loaded + fields[TypeFunc::Parms+0] = TypeInt::INT; + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); + + // create result type (range) + fields = TypeTuple::fields(0); + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0, fields); + + return TypeFunc::make(domain, range); +} + +# ifdef ENABLE_ZAP_DEAD_LOCALS +// Type used for stub generation for zap_dead_locals. +// No inputs or outputs +const TypeFunc *OptoRuntime::zap_dead_locals_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(0); + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms,fields); + + return TypeFunc::make(domain,range); +} +# endif + + +//----------------------------------------------------------------------------- +// Monitor Handling +const TypeFunc *OptoRuntime::complete_monitor_enter_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked + fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); + + return TypeFunc::make(domain,range); +} + + +//----------------------------------------------------------------------------- +const TypeFunc *OptoRuntime::complete_monitor_exit_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Object to be Locked + fields[TypeFunc::Parms+1] = TypeRawPtr::BOTTOM; // Address of stack location for lock + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); + + return TypeFunc::make(domain,range); +} + +const TypeFunc* OptoRuntime::flush_windows_Type() { + // create input type (domain) + const Type** fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = NULL; // void + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms, fields); + + // create result type + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = NULL; // void + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc* OptoRuntime::l2f_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeLong::LONG; + fields[TypeFunc::Parms+1] = Type::HALF; + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = Type::FLOAT; + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc* OptoRuntime::modf_Type() { + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = Type::FLOAT; + fields[TypeFunc::Parms+1] = Type::FLOAT; + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = Type::FLOAT; + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc *OptoRuntime::Math_D_D_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + // symbolOop name of class to be loaded + fields[TypeFunc::Parms+0] = Type::DOUBLE; + fields[TypeFunc::Parms+1] = Type::HALF; + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); + + // create result type (range) + fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = Type::DOUBLE; + fields[TypeFunc::Parms+1] = Type::HALF; + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); + + return TypeFunc::make(domain, range); +} + +const TypeFunc* OptoRuntime::Math_DD_D_Type() { + const Type **fields = TypeTuple::fields(4); + fields[TypeFunc::Parms+0] = Type::DOUBLE; + fields[TypeFunc::Parms+1] = Type::HALF; + fields[TypeFunc::Parms+2] = Type::DOUBLE; + fields[TypeFunc::Parms+3] = Type::HALF; + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+4, fields); + + // create result type (range) + fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = Type::DOUBLE; + fields[TypeFunc::Parms+1] = Type::HALF; + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); + + return TypeFunc::make(domain, range); +} + +//-------------- currentTimeMillis + +const TypeFunc* OptoRuntime::current_time_millis_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(0); + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+0, fields); + + // create result type (range) + fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeLong::LONG; + fields[TypeFunc::Parms+1] = Type::HALF; + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+2, fields); + + return TypeFunc::make(domain, range); +} + +// arraycopy stub variations: +enum ArrayCopyType { + ac_fast, // void(ptr, ptr, size_t) + ac_checkcast, // int(ptr, ptr, size_t, size_t, ptr) + ac_slow, // void(ptr, int, ptr, int, int) + ac_generic // int(ptr, int, ptr, int, int) +}; + +static const TypeFunc* make_arraycopy_Type(ArrayCopyType act) { + // create input type (domain) + int num_args = (act == ac_fast ? 3 : 5); + int num_size_args = (act == ac_fast ? 1 : act == ac_checkcast ? 2 : 0); + int argcnt = num_args; + LP64_ONLY(argcnt += num_size_args); // halfwords for lengths + const Type** fields = TypeTuple::fields(argcnt); + int argp = TypeFunc::Parms; + fields[argp++] = TypePtr::NOTNULL; // src + if (num_size_args == 0) { + fields[argp++] = TypeInt::INT; // src_pos + } + fields[argp++] = TypePtr::NOTNULL; // dest + if (num_size_args == 0) { + fields[argp++] = TypeInt::INT; // dest_pos + fields[argp++] = TypeInt::INT; // length + } + while (num_size_args-- > 0) { + fields[argp++] = TypeX_X; // size in whatevers (size_t) + LP64_ONLY(fields[argp++] = Type::HALF); // other half of long length + } + if (act == ac_checkcast) { + fields[argp++] = TypePtr::NOTNULL; // super_klass + } + assert(argp == TypeFunc::Parms+argcnt, "correct decoding of act"); + const TypeTuple* domain = TypeTuple::make(TypeFunc::Parms+argcnt, fields); + + // create result type if needed + int retcnt = (act == ac_checkcast || act == ac_generic ? 1 : 0); + fields = TypeTuple::fields(1); + if (retcnt == 0) + fields[TypeFunc::Parms+0] = NULL; // void + else + fields[TypeFunc::Parms+0] = TypeInt::INT; // status result, if needed + const TypeTuple* range = TypeTuple::make(TypeFunc::Parms+retcnt, fields); + return TypeFunc::make(domain, range); +} + +const TypeFunc* OptoRuntime::fast_arraycopy_Type() { + // This signature is simple: Two base pointers and a size_t. + return make_arraycopy_Type(ac_fast); +} + +const TypeFunc* OptoRuntime::checkcast_arraycopy_Type() { + // An extension of fast_arraycopy_Type which adds type checking. + return make_arraycopy_Type(ac_checkcast); +} + +const TypeFunc* OptoRuntime::slow_arraycopy_Type() { + // This signature is exactly the same as System.arraycopy. + // There are no intptr_t (int/long) arguments. + return make_arraycopy_Type(ac_slow); +} + +const TypeFunc* OptoRuntime::generic_arraycopy_Type() { + // This signature is like System.arraycopy, except that it returns status. + return make_arraycopy_Type(ac_generic); +} + + +//------------- Interpreter state access for on stack replacement +const TypeFunc* OptoRuntime::osr_end_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // OSR temp buf + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1, fields); + + // create result type + fields = TypeTuple::fields(1); + // fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // locked oop + fields[TypeFunc::Parms+0] = NULL; // void + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); + return TypeFunc::make(domain, range); +} + +//-------------- methodData update helpers + +const TypeFunc* OptoRuntime::profile_receiver_type_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeAryPtr::NOTNULL; // methodData pointer + fields[TypeFunc::Parms+1] = TypeInstPtr::BOTTOM; // receiver oop + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2, fields); + + // create result type + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = NULL; // void + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms, fields); + return TypeFunc::make(domain,range); +} + +JRT_LEAF(void, OptoRuntime::profile_receiver_type_C(DataLayout* data, oopDesc* receiver)) + if (receiver == NULL) return; + klassOop receiver_klass = receiver->klass(); + + intptr_t* mdp = ((intptr_t*)(data)) + DataLayout::header_size_in_cells(); + int empty_row = -1; // free row, if any is encountered + + // ReceiverTypeData* vc = new ReceiverTypeData(mdp); + for (uint row = 0; row < ReceiverTypeData::row_limit(); row++) { + // if (vc->receiver(row) == receiver_klass) + int receiver_off = ReceiverTypeData::receiver_cell_index(row); + intptr_t row_recv = *(mdp + receiver_off); + if (row_recv == (intptr_t) receiver_klass) { + // vc->set_receiver_count(row, vc->receiver_count(row) + DataLayout::counter_increment); + int count_off = ReceiverTypeData::receiver_count_cell_index(row); + *(mdp + count_off) += DataLayout::counter_increment; + return; + } else if (row_recv == 0) { + // else if (vc->receiver(row) == NULL) + empty_row = (int) row; + } + } + + if (empty_row != -1) { + int receiver_off = ReceiverTypeData::receiver_cell_index(empty_row); + // vc->set_receiver(empty_row, receiver_klass); + *(mdp + receiver_off) = (intptr_t) receiver_klass; + // vc->set_receiver_count(empty_row, DataLayout::counter_increment); + int count_off = ReceiverTypeData::receiver_count_cell_index(empty_row); + *(mdp + count_off) = DataLayout::counter_increment; + } +JRT_END + +//----------------------------------------------------------------------------- +// implicit exception support. + +static void report_null_exception_in_code_cache(address exception_pc) { + ResourceMark rm; + CodeBlob* n = CodeCache::find_blob(exception_pc); + if (n != NULL) { + tty->print_cr("#"); + tty->print_cr("# HotSpot Runtime Error, null exception in generated code"); + tty->print_cr("#"); + tty->print_cr("# pc where exception happened = " INTPTR_FORMAT, exception_pc); + + if (n->is_nmethod()) { + methodOop method = ((nmethod*)n)->method(); + tty->print_cr("# Method where it happened %s.%s ", Klass::cast(method->method_holder())->name()->as_C_string(), method->name()->as_C_string()); + tty->print_cr("#"); + if (ShowMessageBoxOnError && UpdateHotSpotCompilerFileOnError) { + const char* title = "HotSpot Runtime Error"; + const char* question = "Do you want to exclude compilation of this method in future runs?"; + if (os::message_box(title, question)) { + CompilerOracle::append_comment_to_file(""); + CompilerOracle::append_comment_to_file("Null exception in compiled code resulted in the following exclude"); + CompilerOracle::append_comment_to_file(""); + CompilerOracle::append_exclude_to_file(method); + tty->print_cr("#"); + tty->print_cr("# %s has been updated to exclude the specified method", CompileCommandFile); + tty->print_cr("#"); + } + } + fatal("Implicit null exception happened in compiled method"); + } else { + n->print(); + fatal("Implicit null exception happened in generated stub"); + } + } + fatal("Implicit null exception at wrong place"); +} + + +//------------------------------------------------------------------------------------- +// register policy + +bool OptoRuntime::is_callee_saved_register(MachRegisterNumbers reg) { + assert(reg >= 0 && reg < _last_Mach_Reg, "must be a machine register"); + switch (register_save_policy[reg]) { + case 'C': return false; //SOC + case 'E': return true ; //SOE + case 'N': return false; //NS + case 'A': return false; //AS + } + ShouldNotReachHere(); + return false; +} + +//----------------------------------------------------------------------- +// Exceptions +// + +static void trace_exception(oop exception_oop, address exception_pc, const char* msg) PRODUCT_RETURN; + +// The method is an entry that is always called by a C++ method not +// directly from compiled code. Compiled code will call the C++ method following. +// We can't allow async exception to be installed during exception processing. +JRT_ENTRY_NO_ASYNC(address, OptoRuntime::handle_exception_C_helper(JavaThread* thread, nmethod* &nm)) + + // Do not confuse exception_oop with pending_exception. The exception_oop + // is only used to pass arguments into the method. Not for general + // exception handling. DO NOT CHANGE IT to use pending_exception, since + // the runtime stubs checks this on exit. + assert(thread->exception_oop() != NULL, "exception oop is found"); + address handler_address = NULL; + + Handle exception(thread, thread->exception_oop()); + + if (TraceExceptions) { + trace_exception(exception(), thread->exception_pc(), ""); + } + // for AbortVMOnException flag + NOT_PRODUCT(Exceptions::debug_check_abort(exception)); + + #ifdef ASSERT + if (!(exception->is_a(SystemDictionary::throwable_klass()))) { + // should throw an exception here + ShouldNotReachHere(); + } + #endif + + + // new exception handling: this method is entered only from adapters + // exceptions from compiled java methods are handled in compiled code + // using rethrow node + + address pc = thread->exception_pc(); + nm = CodeCache::find_nmethod(pc); + assert(nm != NULL, "No NMethod found"); + if (nm->is_native_method()) { + fatal("Native mathod should not have path to exception handling"); + } else { + // we are switching to old paradigm: search for exception handler in caller_frame + // instead in exception handler of caller_frame.sender() + + if (JvmtiExport::can_post_exceptions()) { + // "Full-speed catching" is not necessary here, + // since we're notifying the VM on every catch. + // Force deoptimization and the rest of the lookup + // will be fine. + deoptimize_caller_frame(thread, true); + } + + // Check the stack guard pages. If enabled, look for handler in this frame; + // otherwise, forcibly unwind the frame. + // + // 4826555: use default current sp for reguard_stack instead of &nm: it's more accurate. + bool force_unwind = !thread->reguard_stack(); + bool deopting = false; + if (nm->is_deopt_pc(pc)) { + deopting = true; + RegisterMap map(thread, false); + frame deoptee = thread->last_frame().sender(&map); + assert(deoptee.is_deoptimized_frame(), "must be deopted"); + // Adjust the pc back to the original throwing pc + pc = deoptee.pc(); + } + + // If we are forcing an unwind because of stack overflow then deopt is + // irrelevant sice we are throwing the frame away anyway. + + if (deopting && !force_unwind) { + handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); + } else { + + handler_address = + force_unwind ? NULL : nm->handler_for_exception_and_pc(exception, pc); + + if (handler_address == NULL) { + handler_address = SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true); + assert (handler_address != NULL, "must have compiled handler"); + // Update the exception cache only when the unwind was not forced. + if (!force_unwind) { + nm->add_handler_for_exception_and_pc(exception,pc,handler_address); + } + } else { + assert(handler_address == SharedRuntime::compute_compiled_exc_handler(nm, pc, exception, force_unwind, true), "Must be the same"); + } + } + + thread->set_exception_pc(pc); + thread->set_exception_handler_pc(handler_address); + thread->set_exception_stack_size(0); + } + + // Restore correct return pc. Was saved above. + thread->set_exception_oop(exception()); + return handler_address; + +JRT_END + +// We are entering here from exception_blob +// If there is a compiled exception handler in this method, we will continue there; +// otherwise we will unwind the stack and continue at the caller of top frame method +// Note we enter without the usual JRT wrapper. We will call a helper routine that +// will do the normal VM entry. We do it this way so that we can see if the nmethod +// we looked up the handler for has been deoptimized in the meantime. If it has been +// we must not use the handler and instread return the deopt blob. +address OptoRuntime::handle_exception_C(JavaThread* thread) { +// +// We are in Java not VM and in debug mode we have a NoHandleMark +// +#ifndef PRODUCT + SharedRuntime::_find_handler_ctr++; // find exception handler +#endif + debug_only(NoHandleMark __hm;) + nmethod* nm = NULL; + address handler_address = NULL; + { + // Enter the VM + + ResetNoHandleMark rnhm; + handler_address = handle_exception_C_helper(thread, nm); + } + + // Back in java: Use no oops, DON'T safepoint + + // Now check to see if the handler we are returning is in a now + // deoptimized frame + + if (nm != NULL) { + RegisterMap map(thread, false); + frame caller = thread->last_frame().sender(&map); +#ifdef ASSERT + assert(caller.is_compiled_frame(), "must be"); +#endif // ASSERT + if (caller.is_deoptimized_frame()) { + handler_address = SharedRuntime::deopt_blob()->unpack_with_exception(); + } + } + return handler_address; +} + +//------------------------------rethrow---------------------------------------- +// We get here after compiled code has executed a 'RethrowNode'. The callee +// is either throwing or rethrowing an exception. The callee-save registers +// have been restored, synchronized objects have been unlocked and the callee +// stack frame has been removed. The return address was passed in. +// Exception oop is passed as the 1st argument. This routine is then called +// from the stub. On exit, we know where to jump in the caller's code. +// After this C code exits, the stub will pop his frame and end in a jump +// (instead of a return). We enter the caller's default handler. +// +// This must be JRT_LEAF: +// - caller will not change its state as we cannot block on exit, +// therefore raw_exception_handler_for_return_address is all it takes +// to handle deoptimized blobs +// +// However, there needs to be a safepoint check in the middle! So compiled +// safepoints are completely watertight. +// +// Thus, it cannot be a leaf since it contains the No_GC_Verifier. +// +// *THIS IS NOT RECOMMENDED PROGRAMMING STYLE* +// +address OptoRuntime::rethrow_C(oopDesc* exception, JavaThread* thread, address ret_pc) { +#ifndef PRODUCT + SharedRuntime::_rethrow_ctr++; // count rethrows +#endif + assert (exception != NULL, "should have thrown a NULLPointerException"); +#ifdef ASSERT + if (!(exception->is_a(SystemDictionary::throwable_klass()))) { + // should throw an exception here + ShouldNotReachHere(); + } +#endif + + thread->set_vm_result(exception); + // Frame not compiled (handles deoptimization blob) + return SharedRuntime::raw_exception_handler_for_return_address(ret_pc); +} + + +const TypeFunc *OptoRuntime::rethrow_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); + + // create result type (range) + fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // Exception oop + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+1, fields); + + return TypeFunc::make(domain, range); +} + + +void OptoRuntime::deoptimize_caller_frame(JavaThread *thread, bool doit) { + // Deoptimize frame + if (doit) { + // Called from within the owner thread, so no need for safepoint + RegisterMap reg_map(thread); + frame stub_frame = thread->last_frame(); + assert(stub_frame.is_runtime_frame() || exception_blob()->contains(stub_frame.pc()), "sanity check"); + frame caller_frame = stub_frame.sender(®_map); + + VM_DeoptimizeFrame deopt(thread, caller_frame.id()); + VMThread::execute(&deopt); + } +} + + +const TypeFunc *OptoRuntime::register_finalizer_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(1); + fields[TypeFunc::Parms+0] = TypeInstPtr::NOTNULL; // oop; Receiver + // // The JavaThread* is passed to each routine as the last argument + // fields[TypeFunc::Parms+1] = TypeRawPtr::NOTNULL; // JavaThread *; Executing thread + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+1,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); + + return TypeFunc::make(domain,range); +} + + +//----------------------------------------------------------------------------- +// Dtrace support. entry and exit probes have the same signature +const TypeFunc *OptoRuntime::dtrace_method_entry_exit_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage + fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // methodOop; Method we are entering + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); + + return TypeFunc::make(domain,range); +} + +const TypeFunc *OptoRuntime::dtrace_object_alloc_Type() { + // create input type (domain) + const Type **fields = TypeTuple::fields(2); + fields[TypeFunc::Parms+0] = TypeRawPtr::BOTTOM; // Thread-local storage + fields[TypeFunc::Parms+1] = TypeInstPtr::NOTNULL; // oop; newly allocated object + + const TypeTuple *domain = TypeTuple::make(TypeFunc::Parms+2,fields); + + // create result type (range) + fields = TypeTuple::fields(0); + + const TypeTuple *range = TypeTuple::make(TypeFunc::Parms+0,fields); + + return TypeFunc::make(domain,range); +} + + +JRT_ENTRY_NO_ASYNC(void, OptoRuntime::register_finalizer(oopDesc* obj, JavaThread* thread)) + assert(obj->is_oop(), "must be a valid oop"); + assert(obj->klass()->klass_part()->has_finalizer(), "shouldn't be here otherwise"); + instanceKlass::register_finalizer(instanceOop(obj), CHECK); +JRT_END + +//----------------------------------------------------------------------------- + +NamedCounter * volatile OptoRuntime::_named_counters = NULL; + +// +// dump the collected NamedCounters. +// +void OptoRuntime::print_named_counters() { + int total_lock_count = 0; + int eliminated_lock_count = 0; + + NamedCounter* c = _named_counters; + while (c) { + if (c->tag() == NamedCounter::LockCounter || c->tag() == NamedCounter::EliminatedLockCounter) { + int count = c->count(); + if (count > 0) { + bool eliminated = c->tag() == NamedCounter::EliminatedLockCounter; + if (Verbose) { + tty->print_cr("%d %s%s", count, c->name(), eliminated ? " (eliminated)" : ""); + } + total_lock_count += count; + if (eliminated) { + eliminated_lock_count += count; + } + } + } else if (c->tag() == NamedCounter::BiasedLockingCounter) { + BiasedLockingCounters* blc = ((BiasedLockingNamedCounter*)c)->counters(); + if (blc->nonzero()) { + tty->print_cr("%s", c->name()); + blc->print_on(tty); + } + } + c = c->next(); + } + if (total_lock_count > 0) { + tty->print_cr("dynamic locks: %d", total_lock_count); + if (eliminated_lock_count) { + tty->print_cr("eliminated locks: %d (%d%%)", eliminated_lock_count, + (int)(eliminated_lock_count * 100.0 / total_lock_count)); + } + } +} + +// +// Allocate a new NamedCounter. The JVMState is used to generate the +// name which consists of method@line for the inlining tree. +// + +NamedCounter* OptoRuntime::new_named_counter(JVMState* youngest_jvms, NamedCounter::CounterTag tag) { + int max_depth = youngest_jvms->depth(); + + // Visit scopes from youngest to oldest. + bool first = true; + stringStream st; + for (int depth = max_depth; depth >= 1; depth--) { + JVMState* jvms = youngest_jvms->of_depth(depth); + ciMethod* m = jvms->has_method() ? jvms->method() : NULL; + if (!first) { + st.print(" "); + } else { + first = false; + } + int bci = jvms->bci(); + if (bci < 0) bci = 0; + st.print("%s.%s@%d", m->holder()->name()->as_utf8(), m->name()->as_utf8(), bci); + // To print linenumbers instead of bci use: m->line_number_from_bci(bci) + } + NamedCounter* c; + if (tag == NamedCounter::BiasedLockingCounter) { + c = new BiasedLockingNamedCounter(strdup(st.as_string())); + } else { + c = new NamedCounter(strdup(st.as_string()), tag); + } + + // atomically add the new counter to the head of the list. We only + // add counters so this is safe. + NamedCounter* head; + do { + head = _named_counters; + c->set_next(head); + } while (Atomic::cmpxchg_ptr(c, &_named_counters, head) != head); + return c; +} + +//----------------------------------------------------------------------------- +// Non-product code +#ifndef PRODUCT + +int trace_exception_counter = 0; +static void trace_exception(oop exception_oop, address exception_pc, const char* msg) { + ttyLocker ttyl; + trace_exception_counter++; + tty->print("%d [Exception (%s): ", trace_exception_counter, msg); + exception_oop->print_value(); + tty->print(" in "); + CodeBlob* blob = CodeCache::find_blob(exception_pc); + if (blob->is_nmethod()) { + ((nmethod*)blob)->method()->print_value(); + } else if (blob->is_runtime_stub()) { + tty->print("<runtime-stub>"); + } else { + tty->print("<unknown>"); + } + tty->print(" at " INTPTR_FORMAT, exception_pc); + tty->print_cr("]"); +} + +#endif // PRODUCT + + +# ifdef ENABLE_ZAP_DEAD_LOCALS +// Called from call sites in compiled code with oop maps (actually safepoints) +// Zaps dead locals in first java frame. +// Is entry because may need to lock to generate oop maps +// Currently, only used for compiler frames, but someday may be used +// for interpreter frames, too. + +int OptoRuntime::ZapDeadCompiledLocals_count = 0; + +// avoid pointers to member funcs with these helpers +static bool is_java_frame( frame* f) { return f->is_java_frame(); } +static bool is_native_frame(frame* f) { return f->is_native_frame(); } + + +void OptoRuntime::zap_dead_java_or_native_locals(JavaThread* thread, + bool (*is_this_the_right_frame_to_zap)(frame*)) { + assert(JavaThread::current() == thread, "is this needed?"); + + if ( !ZapDeadCompiledLocals ) return; + + bool skip = false; + + if ( ZapDeadCompiledLocalsFirst == 0 ) ; // nothing special + else if ( ZapDeadCompiledLocalsFirst > ZapDeadCompiledLocals_count ) skip = true; + else if ( ZapDeadCompiledLocalsFirst == ZapDeadCompiledLocals_count ) + warning("starting zapping after skipping"); + + if ( ZapDeadCompiledLocalsLast == -1 ) ; // nothing special + else if ( ZapDeadCompiledLocalsLast < ZapDeadCompiledLocals_count ) skip = true; + else if ( ZapDeadCompiledLocalsLast == ZapDeadCompiledLocals_count ) + warning("about to zap last zap"); + + ++ZapDeadCompiledLocals_count; // counts skipped zaps, too + + if ( skip ) return; + + // find java frame and zap it + + for (StackFrameStream sfs(thread); !sfs.is_done(); sfs.next()) { + if (is_this_the_right_frame_to_zap(sfs.current()) ) { + sfs.current()->zap_dead_locals(thread, sfs.register_map()); + return; + } + } + warning("no frame found to zap in zap_dead_Java_locals_C"); +} + +JRT_LEAF(void, OptoRuntime::zap_dead_Java_locals_C(JavaThread* thread)) + zap_dead_java_or_native_locals(thread, is_java_frame); +JRT_END + +// The following does not work because for one thing, the +// thread state is wrong; it expects java, but it is native. +// Also, the invarients in a native stub are different and +// I'm not sure it is safe to have a MachCalRuntimeDirectNode +// in there. +// So for now, we do not zap in native stubs. + +JRT_LEAF(void, OptoRuntime::zap_dead_native_locals_C(JavaThread* thread)) + zap_dead_java_or_native_locals(thread, is_native_frame); +JRT_END + +# endif