1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkStack.hpp Wed Aug 11 05:51:21 2010 -0700
1.3 @@ -0,0 +1,290 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2008, 2009, 2010 Red Hat, Inc.
1.7 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.8 + *
1.9 + * This code is free software; you can redistribute it and/or modify it
1.10 + * under the terms of the GNU General Public License version 2 only, as
1.11 + * published by the Free Software Foundation.
1.12 + *
1.13 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.14 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.15 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.16 + * version 2 for more details (a copy is included in the LICENSE file that
1.17 + * accompanied this code).
1.18 + *
1.19 + * You should have received a copy of the GNU General Public License version
1.20 + * 2 along with this work; if not, write to the Free Software Foundation,
1.21 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.22 + *
1.23 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.24 + * or visit www.oracle.com if you need additional information or have any
1.25 + * questions.
1.26 + *
1.27 + */
1.28 +
1.29 +class SharkFunction;
1.30 +class SharkNativeWrapper;
1.31 +class SharkStackWithNormalFrame;
1.32 +class SharkStackWithNativeFrame;
1.33 +
1.34 +class SharkStack : public SharkCompileInvariants {
1.35 + public:
1.36 + static SharkStack* CreateBuildAndPushFrame(
1.37 + SharkFunction* function, llvm::Value* method);
1.38 + static SharkStack* CreateBuildAndPushFrame(
1.39 + SharkNativeWrapper* wrapper, llvm::Value* method);
1.40 +
1.41 + protected:
1.42 + SharkStack(const SharkCompileInvariants* parent)
1.43 + : SharkCompileInvariants(parent) {}
1.44 +
1.45 + protected:
1.46 + void initialize(llvm::Value* method);
1.47 +
1.48 + protected:
1.49 + void CreateStackOverflowCheck(llvm::Value* sp);
1.50 +
1.51 + // Properties of the method being compiled
1.52 + protected:
1.53 + virtual int arg_size() const = 0;
1.54 + virtual int max_locals() const = 0;
1.55 + virtual int max_stack() const = 0;
1.56 + virtual int max_monitors() const = 0;
1.57 +
1.58 + // BasicBlock creation
1.59 + protected:
1.60 + virtual llvm::BasicBlock* CreateBlock(const char* name = "") const = 0;
1.61 +
1.62 + // Interpreter entry point for bailouts
1.63 + protected:
1.64 + virtual address interpreter_entry_point() const = 0;
1.65 +
1.66 + // Interface with the Zero stack
1.67 + private:
1.68 + llvm::Value* zero_stack() const {
1.69 + return builder()->CreateAddressOfStructEntry(
1.70 + thread(),
1.71 + JavaThread::zero_stack_offset(),
1.72 + SharkType::zeroStack_type(),
1.73 + "zero_stack");
1.74 + }
1.75 + llvm::Value* stack_base() const {
1.76 + return builder()->CreateValueOfStructEntry(
1.77 + zero_stack(),
1.78 + ZeroStack::base_offset(),
1.79 + SharkType::intptr_type(),
1.80 + "stack_base");
1.81 + }
1.82 + llvm::Value* stack_pointer_addr() const {
1.83 + return builder()->CreateAddressOfStructEntry(
1.84 + zero_stack(),
1.85 + ZeroStack::sp_offset(),
1.86 + llvm::PointerType::getUnqual(SharkType::intptr_type()),
1.87 + "stack_pointer_addr");
1.88 + }
1.89 + llvm::Value* frame_pointer_addr() const {
1.90 + return builder()->CreateAddressOfStructEntry(
1.91 + thread(),
1.92 + JavaThread::top_zero_frame_offset(),
1.93 + llvm::PointerType::getUnqual(SharkType::intptr_type()),
1.94 + "frame_pointer_addr");
1.95 + }
1.96 +
1.97 + public:
1.98 + llvm::LoadInst* CreateLoadStackPointer(const char *name = "") {
1.99 + return builder()->CreateLoad(stack_pointer_addr(), name);
1.100 + }
1.101 + llvm::StoreInst* CreateStoreStackPointer(llvm::Value* value) {
1.102 + return builder()->CreateStore(value, stack_pointer_addr());
1.103 + }
1.104 + llvm::LoadInst* CreateLoadFramePointer(const char *name = "") {
1.105 + return builder()->CreateLoad(frame_pointer_addr(), name);
1.106 + }
1.107 + llvm::StoreInst* CreateStoreFramePointer(llvm::Value* value) {
1.108 + return builder()->CreateStore(value, frame_pointer_addr());
1.109 + }
1.110 + llvm::Value* CreatePopFrame(int result_slots);
1.111 +
1.112 + // Interface with the frame anchor
1.113 + private:
1.114 + llvm::Value* last_Java_sp_addr() const {
1.115 + return builder()->CreateAddressOfStructEntry(
1.116 + thread(),
1.117 + JavaThread::last_Java_sp_offset(),
1.118 + llvm::PointerType::getUnqual(SharkType::intptr_type()),
1.119 + "last_Java_sp_addr");
1.120 + }
1.121 + llvm::Value* last_Java_fp_addr() const {
1.122 + return builder()->CreateAddressOfStructEntry(
1.123 + thread(),
1.124 + JavaThread::last_Java_fp_offset(),
1.125 + llvm::PointerType::getUnqual(SharkType::intptr_type()),
1.126 + "last_Java_fp_addr");
1.127 + }
1.128 +
1.129 + public:
1.130 + void CreateSetLastJavaFrame() {
1.131 + // Note that whenever _last_Java_sp != NULL other anchor fields
1.132 + // must be valid. The profiler apparently depends on this.
1.133 + NOT_PRODUCT(CreateAssertLastJavaSPIsNull());
1.134 + builder()->CreateStore(CreateLoadFramePointer(), last_Java_fp_addr());
1.135 + // XXX There's last_Java_pc as well, but I don't think anything uses it
1.136 + // Also XXX: should we fence here? Zero doesn't...
1.137 + builder()->CreateStore(CreateLoadStackPointer(), last_Java_sp_addr());
1.138 + // Also also XXX: we could probably cache the sp (and the fp we know??)
1.139 + }
1.140 + void CreateResetLastJavaFrame() {
1.141 + builder()->CreateStore(LLVMValue::intptr_constant(0), last_Java_sp_addr());
1.142 + }
1.143 +
1.144 + private:
1.145 + void CreateAssertLastJavaSPIsNull() const PRODUCT_RETURN;
1.146 +
1.147 + // Our method's frame
1.148 + private:
1.149 + llvm::Value* _frame;
1.150 + int _extended_frame_size;
1.151 + int _stack_slots_offset;
1.152 +
1.153 + public:
1.154 + int extended_frame_size() const {
1.155 + return _extended_frame_size;
1.156 + }
1.157 + int oopmap_frame_size() const {
1.158 + return extended_frame_size() - arg_size();
1.159 + }
1.160 +
1.161 + // Offsets of things in the frame
1.162 + private:
1.163 + int _monitors_slots_offset;
1.164 + int _oop_tmp_slot_offset;
1.165 + int _method_slot_offset;
1.166 + int _pc_slot_offset;
1.167 + int _locals_slots_offset;
1.168 +
1.169 + public:
1.170 + int stack_slots_offset() const {
1.171 + return _stack_slots_offset;
1.172 + }
1.173 + int oop_tmp_slot_offset() const {
1.174 + return _oop_tmp_slot_offset;
1.175 + }
1.176 + int method_slot_offset() const {
1.177 + return _method_slot_offset;
1.178 + }
1.179 + int pc_slot_offset() const {
1.180 + return _pc_slot_offset;
1.181 + }
1.182 + int locals_slots_offset() const {
1.183 + return _locals_slots_offset;
1.184 + }
1.185 + int monitor_offset(int index) const {
1.186 + assert(index >= 0 && index < max_monitors(), "invalid monitor index");
1.187 + return _monitors_slots_offset +
1.188 + (max_monitors() - 1 - index) * frame::interpreter_frame_monitor_size();
1.189 + }
1.190 + int monitor_object_offset(int index) const {
1.191 + return monitor_offset(index) +
1.192 + (BasicObjectLock::obj_offset_in_bytes() >> LogBytesPerWord);
1.193 + }
1.194 + int monitor_header_offset(int index) const {
1.195 + return monitor_offset(index) +
1.196 + ((BasicObjectLock::lock_offset_in_bytes() +
1.197 + BasicLock::displaced_header_offset_in_bytes()) >> LogBytesPerWord);
1.198 + }
1.199 +
1.200 + // Addresses of things in the frame
1.201 + public:
1.202 + llvm::Value* slot_addr(int offset,
1.203 + const llvm::Type* type = NULL,
1.204 + const char* name = "") const;
1.205 +
1.206 + llvm::Value* monitor_addr(int index) const {
1.207 + return slot_addr(
1.208 + monitor_offset(index),
1.209 + SharkType::monitor_type(),
1.210 + "monitor");
1.211 + }
1.212 + llvm::Value* monitor_object_addr(int index) const {
1.213 + return slot_addr(
1.214 + monitor_object_offset(index),
1.215 + SharkType::oop_type(),
1.216 + "object_addr");
1.217 + }
1.218 + llvm::Value* monitor_header_addr(int index) const {
1.219 + return slot_addr(
1.220 + monitor_header_offset(index),
1.221 + SharkType::intptr_type(),
1.222 + "displaced_header_addr");
1.223 + }
1.224 +
1.225 + // oopmap helpers
1.226 + public:
1.227 + static int oopmap_slot_munge(int offset) {
1.228 + return offset << (LogBytesPerWord - LogBytesPerInt);
1.229 + }
1.230 + static VMReg slot2reg(int offset) {
1.231 + return VMRegImpl::stack2reg(oopmap_slot_munge(offset));
1.232 + }
1.233 +};
1.234 +
1.235 +class SharkStackWithNormalFrame : public SharkStack {
1.236 + friend class SharkStack;
1.237 +
1.238 + protected:
1.239 + SharkStackWithNormalFrame(SharkFunction* function, llvm::Value* method);
1.240 +
1.241 + private:
1.242 + SharkFunction* _function;
1.243 +
1.244 + private:
1.245 + SharkFunction* function() const {
1.246 + return _function;
1.247 + }
1.248 +
1.249 + // Properties of the method being compiled
1.250 + private:
1.251 + int arg_size() const;
1.252 + int max_locals() const;
1.253 + int max_stack() const;
1.254 + int max_monitors() const;
1.255 +
1.256 + // BasicBlock creation
1.257 + private:
1.258 + llvm::BasicBlock* CreateBlock(const char* name = "") const;
1.259 +
1.260 + // Interpreter entry point for bailouts
1.261 + private:
1.262 + address interpreter_entry_point() const;
1.263 +};
1.264 +
1.265 +class SharkStackWithNativeFrame : public SharkStack {
1.266 + friend class SharkStack;
1.267 +
1.268 + protected:
1.269 + SharkStackWithNativeFrame(SharkNativeWrapper* wrapper, llvm::Value* method);
1.270 +
1.271 + private:
1.272 + SharkNativeWrapper* _wrapper;
1.273 +
1.274 + private:
1.275 + SharkNativeWrapper* wrapper() const {
1.276 + return _wrapper;
1.277 + }
1.278 +
1.279 + // Properties of the method being compiled
1.280 + private:
1.281 + int arg_size() const;
1.282 + int max_locals() const;
1.283 + int max_stack() const;
1.284 + int max_monitors() const;
1.285 +
1.286 + // BasicBlock creation
1.287 + private:
1.288 + llvm::BasicBlock* CreateBlock(const char* name = "") const;
1.289 +
1.290 + // Interpreter entry point for bailouts
1.291 + private:
1.292 + address interpreter_entry_point() const;
1.293 +};
