| /* |
| * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright 2008, 2009, 2010 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_SHARKSTACK_HPP |
| #define SHARE_VM_SHARK_SHARKSTACK_HPP |
| |
| #include "shark/llvmHeaders.hpp" |
| #include "shark/sharkInvariants.hpp" |
| #include "shark/sharkType.hpp" |
| |
| class SharkFunction; |
| class SharkNativeWrapper; |
| class SharkStackWithNormalFrame; |
| class SharkStackWithNativeFrame; |
| |
| class SharkStack : public SharkCompileInvariants { |
| public: |
| static SharkStack* CreateBuildAndPushFrame( |
| SharkFunction* function, llvm::Value* method); |
| static SharkStack* CreateBuildAndPushFrame( |
| SharkNativeWrapper* wrapper, llvm::Value* method); |
| |
| protected: |
| SharkStack(const SharkCompileInvariants* parent) |
| : SharkCompileInvariants(parent) {} |
| |
| protected: |
| void initialize(llvm::Value* method); |
| |
| protected: |
| void CreateStackOverflowCheck(llvm::Value* sp); |
| |
| // Properties of the method being compiled |
| protected: |
| virtual int arg_size() const = 0; |
| virtual int max_locals() const = 0; |
| virtual int max_stack() const = 0; |
| virtual int max_monitors() const = 0; |
| |
| // BasicBlock creation |
| protected: |
| virtual llvm::BasicBlock* CreateBlock(const char* name = "") const = 0; |
| |
| // Interpreter entry point for bailouts |
| protected: |
| virtual address interpreter_entry_point() const = 0; |
| |
| // Interface with the Zero stack |
| private: |
| llvm::Value* zero_stack() const { |
| return builder()->CreateAddressOfStructEntry( |
| thread(), |
| JavaThread::zero_stack_offset(), |
| SharkType::zeroStack_type(), |
| "zero_stack"); |
| } |
| llvm::Value* stack_base() const { |
| return builder()->CreateValueOfStructEntry( |
| zero_stack(), |
| ZeroStack::base_offset(), |
| SharkType::intptr_type(), |
| "stack_base"); |
| } |
| llvm::Value* stack_pointer_addr() const { |
| return builder()->CreateAddressOfStructEntry( |
| zero_stack(), |
| ZeroStack::sp_offset(), |
| llvm::PointerType::getUnqual(SharkType::intptr_type()), |
| "stack_pointer_addr"); |
| } |
| llvm::Value* frame_pointer_addr() const { |
| return builder()->CreateAddressOfStructEntry( |
| thread(), |
| JavaThread::top_zero_frame_offset(), |
| llvm::PointerType::getUnqual(SharkType::intptr_type()), |
| "frame_pointer_addr"); |
| } |
| |
| public: |
| llvm::LoadInst* CreateLoadStackPointer(const char *name = "") { |
| return builder()->CreateLoad(stack_pointer_addr(), name); |
| } |
| llvm::StoreInst* CreateStoreStackPointer(llvm::Value* value) { |
| return builder()->CreateStore(value, stack_pointer_addr()); |
| } |
| llvm::LoadInst* CreateLoadFramePointer(const char *name = "") { |
| return builder()->CreateLoad(frame_pointer_addr(), name); |
| } |
| llvm::StoreInst* CreateStoreFramePointer(llvm::Value* value) { |
| return builder()->CreateStore(value, frame_pointer_addr()); |
| } |
| llvm::Value* CreatePopFrame(int result_slots); |
| |
| // Interface with the frame anchor |
| private: |
| llvm::Value* last_Java_sp_addr() const { |
| return builder()->CreateAddressOfStructEntry( |
| thread(), |
| JavaThread::last_Java_sp_offset(), |
| llvm::PointerType::getUnqual(SharkType::intptr_type()), |
| "last_Java_sp_addr"); |
| } |
| llvm::Value* last_Java_fp_addr() const { |
| return builder()->CreateAddressOfStructEntry( |
| thread(), |
| JavaThread::last_Java_fp_offset(), |
| llvm::PointerType::getUnqual(SharkType::intptr_type()), |
| "last_Java_fp_addr"); |
| } |
| |
| public: |
| void CreateSetLastJavaFrame() { |
| // Note that whenever _last_Java_sp != NULL other anchor fields |
| // must be valid. The profiler apparently depends on this. |
| NOT_PRODUCT(CreateAssertLastJavaSPIsNull()); |
| builder()->CreateStore(CreateLoadFramePointer(), last_Java_fp_addr()); |
| // XXX There's last_Java_pc as well, but I don't think anything uses it |
| // Also XXX: should we fence here? Zero doesn't... |
| builder()->CreateStore(CreateLoadStackPointer(), last_Java_sp_addr()); |
| // Also also XXX: we could probably cache the sp (and the fp we know??) |
| } |
| void CreateResetLastJavaFrame() { |
| builder()->CreateStore(LLVMValue::intptr_constant(0), last_Java_sp_addr()); |
| } |
| |
| private: |
| void CreateAssertLastJavaSPIsNull() const PRODUCT_RETURN; |
| |
| // Our method's frame |
| private: |
| llvm::Value* _frame; |
| int _extended_frame_size; |
| int _stack_slots_offset; |
| |
| public: |
| int extended_frame_size() const { |
| return _extended_frame_size; |
| } |
| int oopmap_frame_size() const { |
| return extended_frame_size() - arg_size(); |
| } |
| |
| // Offsets of things in the frame |
| private: |
| int _monitors_slots_offset; |
| int _oop_tmp_slot_offset; |
| int _method_slot_offset; |
| int _pc_slot_offset; |
| int _locals_slots_offset; |
| |
| public: |
| int stack_slots_offset() const { |
| return _stack_slots_offset; |
| } |
| int oop_tmp_slot_offset() const { |
| return _oop_tmp_slot_offset; |
| } |
| int method_slot_offset() const { |
| return _method_slot_offset; |
| } |
| int pc_slot_offset() const { |
| return _pc_slot_offset; |
| } |
| int locals_slots_offset() const { |
| return _locals_slots_offset; |
| } |
| int monitor_offset(int index) const { |
| assert(index >= 0 && index < max_monitors(), "invalid monitor index"); |
| return _monitors_slots_offset + |
| (max_monitors() - 1 - index) * frame::interpreter_frame_monitor_size(); |
| } |
| int monitor_object_offset(int index) const { |
| return monitor_offset(index) + |
| (BasicObjectLock::obj_offset_in_bytes() >> LogBytesPerWord); |
| } |
| int monitor_header_offset(int index) const { |
| return monitor_offset(index) + |
| ((BasicObjectLock::lock_offset_in_bytes() + |
| BasicLock::displaced_header_offset_in_bytes()) >> LogBytesPerWord); |
| } |
| |
| // Addresses of things in the frame |
| public: |
| llvm::Value* slot_addr(int offset, |
| llvm::Type* type = NULL, |
| const char* name = "") const; |
| |
| llvm::Value* monitor_addr(int index) const { |
| return slot_addr( |
| monitor_offset(index), |
| SharkType::monitor_type(), |
| "monitor"); |
| } |
| llvm::Value* monitor_object_addr(int index) const { |
| return slot_addr( |
| monitor_object_offset(index), |
| SharkType::oop_type(), |
| "object_addr"); |
| } |
| llvm::Value* monitor_header_addr(int index) const { |
| return slot_addr( |
| monitor_header_offset(index), |
| SharkType::intptr_type(), |
| "displaced_header_addr"); |
| } |
| |
| // oopmap helpers |
| public: |
| static int oopmap_slot_munge(int offset) { |
| return offset << (LogBytesPerWord - LogBytesPerInt); |
| } |
| static VMReg slot2reg(int offset) { |
| return VMRegImpl::stack2reg(oopmap_slot_munge(offset)); |
| } |
| }; |
| |
| class SharkStackWithNormalFrame : public SharkStack { |
| friend class SharkStack; |
| |
| protected: |
| SharkStackWithNormalFrame(SharkFunction* function, llvm::Value* method); |
| |
| private: |
| SharkFunction* _function; |
| |
| private: |
| SharkFunction* function() const { |
| return _function; |
| } |
| |
| // Properties of the method being compiled |
| private: |
| int arg_size() const; |
| int max_locals() const; |
| int max_stack() const; |
| int max_monitors() const; |
| |
| // BasicBlock creation |
| private: |
| llvm::BasicBlock* CreateBlock(const char* name = "") const; |
| |
| // Interpreter entry point for bailouts |
| private: |
| address interpreter_entry_point() const; |
| }; |
| |
| class SharkStackWithNativeFrame : public SharkStack { |
| friend class SharkStack; |
| |
| protected: |
| SharkStackWithNativeFrame(SharkNativeWrapper* wrapper, llvm::Value* method); |
| |
| private: |
| SharkNativeWrapper* _wrapper; |
| |
| private: |
| SharkNativeWrapper* wrapper() const { |
| return _wrapper; |
| } |
| |
| // Properties of the method being compiled |
| private: |
| int arg_size() const; |
| int max_locals() const; |
| int max_stack() const; |
| int max_monitors() const; |
| |
| // BasicBlock creation |
| private: |
| llvm::BasicBlock* CreateBlock(const char* name = "") const; |
| |
| // Interpreter entry point for bailouts |
| private: |
| address interpreter_entry_point() const; |
| }; |
| |
| #endif // SHARE_VM_SHARK_SHARKSTACK_HPP |