--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/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