--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/shark/sharkNativeWrapper.hpp Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
+ * Copyright 2009 Red Hat, Inc.
+ * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+class SharkNativeWrapper : public SharkCompileInvariants {
+ friend class SharkStackWithNativeFrame;
+
+ public:
+ static SharkNativeWrapper* build(SharkBuilder* builder,
+ methodHandle target,
+ const char* name,
+ BasicType* arg_types,
+ BasicType return_type) {
+ return new SharkNativeWrapper(builder,
+ target,
+ name,
+ arg_types,
+ return_type);
+ }
+
+ private:
+ SharkNativeWrapper(SharkBuilder* builder,
+ methodHandle target,
+ const char* name,
+ BasicType* arg_types,
+ BasicType return_type)
+ : SharkCompileInvariants(NULL, builder),
+ _target(target),
+ _arg_types(arg_types),
+ _return_type(return_type),
+ _lock_slot_offset(0) { initialize(name); }
+
+ private:
+ void initialize(const char* name);
+
+ private:
+ methodHandle _target;
+ BasicType* _arg_types;
+ BasicType _return_type;
+ llvm::Function* _function;
+ SharkStack* _stack;
+ llvm::Value* _oop_tmp_slot;
+ OopMapSet* _oop_maps;
+ int _receiver_slot_offset;
+ int _lock_slot_offset;
+
+ // The method being compiled.
+ protected:
+ methodHandle target() const {
+ return _target;
+ }
+
+ // Properties of the method.
+ protected:
+ int arg_size() const {
+ return target()->size_of_parameters();
+ }
+ BasicType arg_type(int i) const {
+ return _arg_types[i];
+ }
+ BasicType return_type() const {
+ return _return_type;
+ }
+ bool is_static() const {
+ return target()->is_static();
+ }
+ bool is_synchronized() const {
+ return target()->is_synchronized();
+ }
+ bool is_returning_oop() const {
+ return target()->is_returning_oop();
+ }
+
+ // The LLVM function we are building.
+ public:
+ llvm::Function* function() const {
+ return _function;
+ }
+
+ // The Zero stack and our frame on it.
+ protected:
+ SharkStack* stack() const {
+ return _stack;
+ }
+
+ // Temporary oop storage.
+ protected:
+ llvm::Value* oop_tmp_slot() const {
+ assert(is_static() || is_returning_oop(), "should be");
+ return _oop_tmp_slot;
+ }
+
+ // Information required by nmethod::new_native_nmethod().
+ public:
+ int frame_size() const {
+ return stack()->oopmap_frame_size();
+ }
+ ByteSize receiver_offset() const {
+ return in_ByteSize(_receiver_slot_offset * wordSize);
+ }
+ ByteSize lock_offset() const {
+ return in_ByteSize(_lock_slot_offset * wordSize);
+ }
+ OopMapSet* oop_maps() const {
+ return _oop_maps;
+ }
+
+ // Helpers.
+ private:
+ llvm::BasicBlock* CreateBlock(const char* name = "") const {
+ return llvm::BasicBlock::Create(SharkContext::current(), name, function());
+ }
+ llvm::Value* thread_state_address() const {
+ return builder()->CreateAddressOfStructEntry(
+ thread(), JavaThread::thread_state_offset(),
+ llvm::PointerType::getUnqual(SharkType::jint_type()),
+ "thread_state_address");
+ }
+ llvm::Value* pending_exception_address() const {
+ return builder()->CreateAddressOfStructEntry(
+ thread(), Thread::pending_exception_offset(),
+ llvm::PointerType::getUnqual(SharkType::oop_type()),
+ "pending_exception_address");
+ }
+ void CreateSetThreadState(JavaThreadState state) const {
+ builder()->CreateStore(
+ LLVMValue::jint_constant(state), thread_state_address());
+ }
+ void CreateWriteMemorySerializePage() const {
+ builder()->CreateStore(
+ LLVMValue::jint_constant(1),
+ builder()->CreateIntToPtr(
+ builder()->CreateAdd(
+ LLVMValue::intptr_constant(
+ (intptr_t) os::get_memory_serialize_page()),
+ builder()->CreateAnd(
+ builder()->CreateLShr(
+ builder()->CreatePtrToInt(thread(), SharkType::intptr_type()),
+ LLVMValue::intptr_constant(os::get_serialize_page_shift_count())),
+ LLVMValue::intptr_constant(os::get_serialize_page_mask()))),
+ llvm::PointerType::getUnqual(SharkType::jint_type())));
+ }
+ void CreateResetHandleBlock() const {
+ llvm::Value *active_handles = builder()->CreateValueOfStructEntry(
+ thread(),
+ JavaThread::active_handles_offset(),
+ SharkType::jniHandleBlock_type(),
+ "active_handles");
+ builder()->CreateStore(
+ LLVMValue::intptr_constant(0),
+ builder()->CreateAddressOfStructEntry(
+ active_handles,
+ in_ByteSize(JNIHandleBlock::top_offset_in_bytes()),
+ llvm::PointerType::getUnqual(SharkType::intptr_type()),
+ "top"));
+ }
+ llvm::LoadInst* CreateLoadPendingException() const {
+ return builder()->CreateLoad(
+ pending_exception_address(), "pending_exception");
+ }
+};