--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/shark/sharkStack.hpp Wed Aug 11 05:51:21 2010 -0700
@@ -0,0 +1,290 @@
+/*
+ * Copyright (c) 1999, 2007, 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.
+ *
+ */
+
+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,
+ const 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;
+};