Mercurial > hg > graal-compiler
view src/share/vm/shark/sharkStack.cpp @ 2212:d9e4d0aefc90
Small clean up to reduce delta to OpenJDK.
author | Thomas Wuerthinger <thomas.wuerthinger@gmail.com> |
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date | Mon, 21 Feb 2011 19:28:35 +0100 |
parents | f95d63e2154a |
children | da91efe96a93 |
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/* * 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. * */ #include "precompiled.hpp" #include "shark/llvmHeaders.hpp" #include "shark/sharkFunction.hpp" #include "shark/sharkNativeWrapper.hpp" #include "shark/sharkStack.hpp" #include "shark/sharkType.hpp" using namespace llvm; void SharkStack::initialize(Value* method) { bool setup_sp_and_method = (method != NULL); int locals_words = max_locals(); int extra_locals = locals_words - arg_size(); int header_words = SharkFrame::header_words; int monitor_words = max_monitors()*frame::interpreter_frame_monitor_size(); int stack_words = max_stack(); int frame_words = header_words + monitor_words + stack_words; _extended_frame_size = frame_words + locals_words; // Update the stack pointer Value *stack_pointer = builder()->CreateSub( CreateLoadStackPointer(), LLVMValue::intptr_constant((frame_words + extra_locals) * wordSize)); CreateStackOverflowCheck(stack_pointer); if (setup_sp_and_method) CreateStoreStackPointer(stack_pointer); // Create the frame _frame = builder()->CreateIntToPtr( stack_pointer, PointerType::getUnqual( ArrayType::get(SharkType::intptr_type(), extended_frame_size())), "frame"); int offset = 0; // Expression stack _stack_slots_offset = offset; offset += stack_words; // Monitors _monitors_slots_offset = offset; offset += monitor_words; // Temporary oop slot _oop_tmp_slot_offset = offset++; // Method pointer _method_slot_offset = offset++; if (setup_sp_and_method) { builder()->CreateStore( method, slot_addr(method_slot_offset(), SharkType::methodOop_type())); } // Unextended SP builder()->CreateStore(stack_pointer, slot_addr(offset++)); // PC _pc_slot_offset = offset++; // Frame header builder()->CreateStore( LLVMValue::intptr_constant(ZeroFrame::SHARK_FRAME), slot_addr(offset++)); Value *fp = slot_addr(offset++); // Local variables _locals_slots_offset = offset; offset += locals_words; // Push the frame assert(offset == extended_frame_size(), "should do"); builder()->CreateStore(CreateLoadFramePointer(), fp); CreateStoreFramePointer( builder()->CreatePtrToInt(fp, SharkType::intptr_type())); } // This function should match ZeroStack::overflow_check void SharkStack::CreateStackOverflowCheck(Value* sp) { BasicBlock *zero_ok = CreateBlock("zero_stack_ok"); BasicBlock *overflow = CreateBlock("stack_overflow"); BasicBlock *abi_ok = CreateBlock("abi_stack_ok"); // Check the Zero stack builder()->CreateCondBr( builder()->CreateICmpULT(sp, stack_base()), overflow, zero_ok); // Check the ABI stack builder()->SetInsertPoint(zero_ok); Value *stack_top = builder()->CreateSub( builder()->CreateValueOfStructEntry( thread(), Thread::stack_base_offset(), SharkType::intptr_type(), "abi_base"), builder()->CreateValueOfStructEntry( thread(), Thread::stack_size_offset(), SharkType::intptr_type(), "abi_size")); Value *free_stack = builder()->CreateSub( builder()->CreatePtrToInt( builder()->CreateGetFrameAddress(), SharkType::intptr_type(), "abi_sp"), stack_top); builder()->CreateCondBr( builder()->CreateICmpULT( free_stack, LLVMValue::intptr_constant(StackShadowPages * os::vm_page_size())), overflow, abi_ok); // Handle overflows builder()->SetInsertPoint(overflow); builder()->CreateCall(builder()->throw_StackOverflowError(), thread()); builder()->CreateRet(LLVMValue::jint_constant(0)); builder()->SetInsertPoint(abi_ok); } Value* SharkStack::CreatePopFrame(int result_slots) { assert(result_slots >= 0 && result_slots <= 2, "should be"); int locals_to_pop = max_locals() - result_slots; Value *fp = CreateLoadFramePointer(); Value *sp = builder()->CreateAdd( fp, LLVMValue::intptr_constant((1 + locals_to_pop) * wordSize)); CreateStoreStackPointer(sp); CreateStoreFramePointer( builder()->CreateLoad( builder()->CreateIntToPtr( fp, PointerType::getUnqual(SharkType::intptr_type())))); return sp; } Value* SharkStack::slot_addr(int offset, const Type* type, const char* name) const { bool needs_cast = type && type != SharkType::intptr_type(); Value* result = builder()->CreateStructGEP( _frame, offset, needs_cast ? "" : name); if (needs_cast) { result = builder()->CreateBitCast( result, PointerType::getUnqual(type), name); } return result; } // The bits that differentiate stacks with normal and native frames on top SharkStack* SharkStack::CreateBuildAndPushFrame(SharkFunction* function, Value* method) { return new SharkStackWithNormalFrame(function, method); } SharkStack* SharkStack::CreateBuildAndPushFrame(SharkNativeWrapper* wrapper, Value* method) { return new SharkStackWithNativeFrame(wrapper, method); } SharkStackWithNormalFrame::SharkStackWithNormalFrame(SharkFunction* function, Value* method) : SharkStack(function), _function(function) { // For normal frames, the stack pointer and the method slot will // be set during each decache, so it is not necessary to do them // at the time the frame is created. However, we set them for // non-PRODUCT builds to make crash dumps easier to understand. initialize(PRODUCT_ONLY(NULL) NOT_PRODUCT(method)); } SharkStackWithNativeFrame::SharkStackWithNativeFrame(SharkNativeWrapper* wrp, Value* method) : SharkStack(wrp), _wrapper(wrp) { initialize(method); } int SharkStackWithNormalFrame::arg_size() const { return function()->arg_size(); } int SharkStackWithNativeFrame::arg_size() const { return wrapper()->arg_size(); } int SharkStackWithNormalFrame::max_locals() const { return function()->max_locals(); } int SharkStackWithNativeFrame::max_locals() const { return wrapper()->arg_size(); } int SharkStackWithNormalFrame::max_stack() const { return function()->max_stack(); } int SharkStackWithNativeFrame::max_stack() const { return 0; } int SharkStackWithNormalFrame::max_monitors() const { return function()->max_monitors(); } int SharkStackWithNativeFrame::max_monitors() const { return wrapper()->is_synchronized() ? 1 : 0; } BasicBlock* SharkStackWithNormalFrame::CreateBlock(const char* name) const { return function()->CreateBlock(name); } BasicBlock* SharkStackWithNativeFrame::CreateBlock(const char* name) const { return wrapper()->CreateBlock(name); } address SharkStackWithNormalFrame::interpreter_entry_point() const { return (address) CppInterpreter::normal_entry; } address SharkStackWithNativeFrame::interpreter_entry_point() const { return (address) CppInterpreter::native_entry; } #ifndef PRODUCT void SharkStack::CreateAssertLastJavaSPIsNull() const { #ifdef ASSERT BasicBlock *fail = CreateBlock("assert_failed"); BasicBlock *pass = CreateBlock("assert_ok"); builder()->CreateCondBr( builder()->CreateICmpEQ( builder()->CreateLoad(last_Java_sp_addr()), LLVMValue::intptr_constant(0)), pass, fail); builder()->SetInsertPoint(fail); builder()->CreateShouldNotReachHere(__FILE__, __LINE__); builder()->CreateUnreachable(); builder()->SetInsertPoint(pass); #endif // ASSERT } #endif // !PRODUCT