1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/vm/shark/sharkState.hpp Wed Aug 11 05:51:21 2010 -0700
1.3 @@ -0,0 +1,188 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved.
1.6 + * Copyright 2008, 2009 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 SharkState : public SharkTargetInvariants {
1.30 + public:
1.31 + SharkState(const SharkTargetInvariants* parent)
1.32 + : SharkTargetInvariants(parent),
1.33 + _method(NULL),
1.34 + _oop_tmp(NULL),
1.35 + _has_safepointed(false) { initialize(NULL); }
1.36 +
1.37 + SharkState(const SharkState* state)
1.38 + : SharkTargetInvariants(state),
1.39 + _method(state->_method),
1.40 + _oop_tmp(state->_oop_tmp),
1.41 + _has_safepointed(state->_has_safepointed) { initialize(state); }
1.42 +
1.43 + private:
1.44 + void initialize(const SharkState* state);
1.45 +
1.46 + private:
1.47 + llvm::Value* _method;
1.48 + SharkValue** _locals;
1.49 + SharkValue** _stack;
1.50 + SharkValue** _sp;
1.51 + int _num_monitors;
1.52 + llvm::Value* _oop_tmp;
1.53 + bool _has_safepointed;
1.54 +
1.55 + // Method
1.56 + public:
1.57 + llvm::Value** method_addr() {
1.58 + return &_method;
1.59 + }
1.60 + llvm::Value* method() const {
1.61 + return _method;
1.62 + }
1.63 + protected:
1.64 + void set_method(llvm::Value* method) {
1.65 + _method = method;
1.66 + }
1.67 +
1.68 + // Local variables
1.69 + public:
1.70 + SharkValue** local_addr(int index) const {
1.71 + assert(index >= 0 && index < max_locals(), "bad local variable index");
1.72 + return &_locals[index];
1.73 + }
1.74 + SharkValue* local(int index) const {
1.75 + return *local_addr(index);
1.76 + }
1.77 + void set_local(int index, SharkValue* value) {
1.78 + *local_addr(index) = value;
1.79 + }
1.80 +
1.81 + // Expression stack
1.82 + public:
1.83 + SharkValue** stack_addr(int slot) const {
1.84 + assert(slot >= 0 && slot < stack_depth(), "bad stack slot");
1.85 + return &_sp[-(slot + 1)];
1.86 + }
1.87 + SharkValue* stack(int slot) const {
1.88 + return *stack_addr(slot);
1.89 + }
1.90 + protected:
1.91 + void set_stack(int slot, SharkValue* value) {
1.92 + *stack_addr(slot) = value;
1.93 + }
1.94 + public:
1.95 + int stack_depth() const {
1.96 + return _sp - _stack;
1.97 + }
1.98 + void push(SharkValue* value) {
1.99 + assert(stack_depth() < max_stack(), "stack overrun");
1.100 + *(_sp++) = value;
1.101 + }
1.102 + SharkValue* pop() {
1.103 + assert(stack_depth() > 0, "stack underrun");
1.104 + return *(--_sp);
1.105 + }
1.106 +
1.107 + // Monitors
1.108 + public:
1.109 + int num_monitors() const {
1.110 + return _num_monitors;
1.111 + }
1.112 + void set_num_monitors(int num_monitors) {
1.113 + _num_monitors = num_monitors;
1.114 + }
1.115 +
1.116 + // Temporary oop slot
1.117 + public:
1.118 + llvm::Value** oop_tmp_addr() {
1.119 + return &_oop_tmp;
1.120 + }
1.121 + llvm::Value* oop_tmp() const {
1.122 + return _oop_tmp;
1.123 + }
1.124 + void set_oop_tmp(llvm::Value* oop_tmp) {
1.125 + _oop_tmp = oop_tmp;
1.126 + }
1.127 +
1.128 + // Safepointed status
1.129 + public:
1.130 + bool has_safepointed() const {
1.131 + return _has_safepointed;
1.132 + }
1.133 + void set_has_safepointed(bool has_safepointed) {
1.134 + _has_safepointed = has_safepointed;
1.135 + }
1.136 +
1.137 + // Comparison
1.138 + public:
1.139 + bool equal_to(SharkState* other);
1.140 +
1.141 + // Copy and merge
1.142 + public:
1.143 + SharkState* copy() const {
1.144 + return new SharkState(this);
1.145 + }
1.146 + void merge(SharkState* other,
1.147 + llvm::BasicBlock* other_block,
1.148 + llvm::BasicBlock* this_block);
1.149 +
1.150 + // Value replacement
1.151 + public:
1.152 + void replace_all(SharkValue* old_value, SharkValue* new_value);
1.153 +};
1.154 +
1.155 +class SharkTopLevelBlock;
1.156 +
1.157 +// SharkNormalEntryState objects are used to create the state
1.158 +// that the method will be entered with for a normal invocation.
1.159 +class SharkNormalEntryState : public SharkState {
1.160 + public:
1.161 + SharkNormalEntryState(SharkTopLevelBlock* block,
1.162 + llvm::Value* method);
1.163 +};
1.164 +
1.165 +// SharkOSREntryState objects are used to create the state
1.166 +// that the method will be entered with for an OSR invocation.
1.167 +class SharkOSREntryState : public SharkState {
1.168 + public:
1.169 + SharkOSREntryState(SharkTopLevelBlock* block,
1.170 + llvm::Value* method,
1.171 + llvm::Value* osr_buf);
1.172 +};
1.173 +
1.174 +// SharkPHIState objects are used to manage the entry state
1.175 +// for blocks with more than one entry path or for blocks
1.176 +// entered from blocks that will be compiled later.
1.177 +class SharkPHIState : public SharkState {
1.178 + public:
1.179 + SharkPHIState(SharkTopLevelBlock* block);
1.180 +
1.181 + private:
1.182 + SharkTopLevelBlock* _block;
1.183 +
1.184 + private:
1.185 + SharkTopLevelBlock* block() const {
1.186 + return _block;
1.187 + }
1.188 +
1.189 + public:
1.190 + void add_incoming(SharkState* incoming_state);
1.191 +};
