/*
* Copyright (c) 1999, 2010, 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.
*
*/
#ifndef SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP
#define SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP
#include "runtime/handles.hpp"
#include "shark/llvmHeaders.hpp"
#include "shark/sharkBuilder.hpp"
#include "shark/sharkContext.hpp"
#include "shark/sharkInvariants.hpp"
#include "shark/sharkStack.hpp"
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");
}
};
#endif // SHARE_VM_SHARK_SHARKNATIVEWRAPPER_HPP