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1 /*
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2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 //------------------------------OptoRuntime------------------------------------
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26 // Opto compiler runtime routines
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27 //
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28 // These are all generated from Ideal graphs. They are called with the
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29 // Java calling convention. Internally they call C++. They are made once at
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30 // startup time and Opto compiles calls to them later.
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31 // Things are broken up into quads: the signature they will be called with,
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32 // the address of the generated code, the corresponding C++ code and an
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33 // nmethod.
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34
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35 // The signature (returned by "xxx_Type()") is used at startup time by the
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36 // Generator to make the generated code "xxx_Java". Opto compiles calls
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37 // to the generated code "xxx_Java". When the compiled code gets executed,
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38 // it calls the C++ code "xxx_C". The generated nmethod is saved in the
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39 // CodeCache. Exception handlers use the nmethod to get the callee-save
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40 // register OopMaps.
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41 class CallInfo;
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42
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43 //
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44 // NamedCounters are tagged counters which can be used for profiling
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45 // code in various ways. Currently they are used by the lock coarsening code
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46 //
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47
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48 class NamedCounter : public CHeapObj {
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49 public:
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50 enum CounterTag {
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51 NoTag,
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52 LockCounter,
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53 EliminatedLockCounter,
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54 BiasedLockingCounter
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55 };
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56
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57 private:
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58 const char * _name;
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59 int _count;
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60 CounterTag _tag;
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61 NamedCounter* _next;
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62
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63 public:
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64 NamedCounter(const char *n, CounterTag tag = NoTag):
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65 _name(n),
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66 _count(0),
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67 _next(NULL),
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68 _tag(tag) {}
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69
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70 const char * name() const { return _name; }
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71 int count() const { return _count; }
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72 address addr() { return (address)&_count; }
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73 CounterTag tag() const { return _tag; }
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74 void set_tag(CounterTag tag) { _tag = tag; }
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75
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76 NamedCounter* next() const { return _next; }
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77 void set_next(NamedCounter* next) {
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78 assert(_next == NULL, "already set");
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79 _next = next;
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80 }
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81
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82 };
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83
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84 class BiasedLockingNamedCounter : public NamedCounter {
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85 private:
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86 BiasedLockingCounters _counters;
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87
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88 public:
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89 BiasedLockingNamedCounter(const char *n) :
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90 NamedCounter(n, BiasedLockingCounter), _counters() {}
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91
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92 BiasedLockingCounters* counters() { return &_counters; }
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93 };
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94
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95 typedef const TypeFunc*(*TypeFunc_generator)();
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96
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97 class OptoRuntime : public AllStatic {
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98 friend class Matcher; // allow access to stub names
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99
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100 private:
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101 // define stubs
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102 static address generate_stub(ciEnv* ci_env, TypeFunc_generator gen, address C_function, const char *name, int is_fancy_jump, bool pass_tls, bool save_arguments, bool return_pc);
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103
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104 // References to generated stubs
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105 static address _new_instance_Java;
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106 static address _new_array_Java;
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107 static address _multianewarray2_Java;
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108 static address _multianewarray3_Java;
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109 static address _multianewarray4_Java;
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110 static address _multianewarray5_Java;
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111 static address _vtable_must_compile_Java;
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112 static address _complete_monitor_locking_Java;
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113 static address _rethrow_Java;
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114
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115 static address _slow_arraycopy_Java;
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116 static address _register_finalizer_Java;
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117
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118 # ifdef ENABLE_ZAP_DEAD_LOCALS
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119 static address _zap_dead_Java_locals_Java;
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120 static address _zap_dead_native_locals_Java;
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121 # endif
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122
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123
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124 //
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125 // Implementation of runtime methods
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126 // =================================
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127
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128 // Allocate storage for a Java instance.
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129 static void new_instance_C(klassOopDesc* instance_klass, JavaThread *thread);
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130
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131 // Allocate storage for a objArray or typeArray
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132 static void new_array_C(klassOopDesc* array_klass, int len, JavaThread *thread);
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133
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134 // Post-allocation step for implementing ReduceInitialCardMarks:
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135 static void do_eager_card_mark(JavaThread* thread);
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136
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137 // Allocate storage for a multi-dimensional arrays
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138 // Note: needs to be fixed for arbitrary number of dimensions
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139 static void multianewarray2_C(klassOopDesc* klass, int len1, int len2, JavaThread *thread);
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140 static void multianewarray3_C(klassOopDesc* klass, int len1, int len2, int len3, JavaThread *thread);
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141 static void multianewarray4_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, JavaThread *thread);
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142 static void multianewarray5_C(klassOopDesc* klass, int len1, int len2, int len3, int len4, int len5, JavaThread *thread);
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143
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144 public:
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145 // Slow-path Locking and Unlocking
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146 static void complete_monitor_locking_C(oopDesc* obj, BasicLock* lock, JavaThread* thread);
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147 static void complete_monitor_unlocking_C(oopDesc* obj, BasicLock* lock);
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148
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149 private:
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150
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151 // Implicit exception support
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152 static void throw_null_exception_C(JavaThread* thread);
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153
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154 // Exception handling
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155 static address handle_exception_C (JavaThread* thread);
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156 static address handle_exception_C_helper(JavaThread* thread, nmethod*& nm);
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157 static address rethrow_C (oopDesc* exception, JavaThread *thread, address return_pc );
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158 static void deoptimize_caller_frame (JavaThread *thread, bool doit);
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159
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160 // CodeBlob support
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161 // ===================================================================
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162
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163 static ExceptionBlob* _exception_blob;
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164 static void generate_exception_blob();
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165
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166 static void register_finalizer(oopDesc* obj, JavaThread* thread);
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167
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168 // zaping dead locals, either from Java frames or from native frames
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169 # ifdef ENABLE_ZAP_DEAD_LOCALS
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170 static void zap_dead_Java_locals_C( JavaThread* thread);
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171 static void zap_dead_native_locals_C( JavaThread* thread);
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172
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173 static void zap_dead_java_or_native_locals( JavaThread*, bool (*)(frame*));
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174
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175 public:
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176 static int ZapDeadCompiledLocals_count;
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177
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178 # endif
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179
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180
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181 public:
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182
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183 static bool is_callee_saved_register(MachRegisterNumbers reg);
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184
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185 // One time only generate runtime code stubs
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186 static void generate(ciEnv* env);
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187
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188 // Returns the name of a stub
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189 static const char* stub_name(address entry);
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190
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191 // access to runtime stubs entry points for java code
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192 static address new_instance_Java() { return _new_instance_Java; }
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193 static address new_array_Java() { return _new_array_Java; }
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194 static address multianewarray2_Java() { return _multianewarray2_Java; }
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195 static address multianewarray3_Java() { return _multianewarray3_Java; }
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196 static address multianewarray4_Java() { return _multianewarray4_Java; }
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197 static address multianewarray5_Java() { return _multianewarray5_Java; }
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198 static address vtable_must_compile_stub() { return _vtable_must_compile_Java; }
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199 static address complete_monitor_locking_Java() { return _complete_monitor_locking_Java; }
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200
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201 static address slow_arraycopy_Java() { return _slow_arraycopy_Java; }
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202 static address register_finalizer_Java() { return _register_finalizer_Java; }
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203
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204
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205 # ifdef ENABLE_ZAP_DEAD_LOCALS
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206 static address zap_dead_locals_stub(bool is_native) { return is_native
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207 ? _zap_dead_native_locals_Java
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208 : _zap_dead_Java_locals_Java; }
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209 static MachNode* node_to_call_zap_dead_locals(Node* n, int block_num, bool is_native);
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210 # endif
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211
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212 static ExceptionBlob* exception_blob() { return _exception_blob; }
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213
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214 // Leaf routines helping with method data update
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215 static void profile_receiver_type_C(DataLayout* data, oopDesc* receiver);
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216
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217 // Implicit exception support
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218 static void throw_div0_exception_C (JavaThread* thread);
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219 static void throw_stack_overflow_error_C(JavaThread* thread);
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220
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221 // Exception handling
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222 static address rethrow_stub() { return _rethrow_Java; }
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223
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224
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225 // Type functions
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226 // ======================================================
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227
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228 static const TypeFunc* new_instance_Type(); // object allocation (slow case)
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229 static const TypeFunc* new_array_Type (); // [a]newarray (slow case)
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230 static const TypeFunc* multianewarray_Type(int ndim); // multianewarray
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231 static const TypeFunc* multianewarray2_Type(); // multianewarray
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232 static const TypeFunc* multianewarray3_Type(); // multianewarray
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233 static const TypeFunc* multianewarray4_Type(); // multianewarray
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234 static const TypeFunc* multianewarray5_Type(); // multianewarray
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235 static const TypeFunc* complete_monitor_enter_Type();
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236 static const TypeFunc* complete_monitor_exit_Type();
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237 static const TypeFunc* uncommon_trap_Type();
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238 static const TypeFunc* athrow_Type();
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239 static const TypeFunc* rethrow_Type();
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240 static const TypeFunc* Math_D_D_Type(); // sin,cos & friends
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241 static const TypeFunc* Math_DD_D_Type(); // mod,pow & friends
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242 static const TypeFunc* modf_Type();
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243 static const TypeFunc* l2f_Type();
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244 static const TypeFunc* current_time_millis_Type();
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245
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246 static const TypeFunc* flush_windows_Type();
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247
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248 // arraycopy routine types
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249 static const TypeFunc* fast_arraycopy_Type(); // bit-blasters
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250 static const TypeFunc* checkcast_arraycopy_Type();
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251 static const TypeFunc* generic_arraycopy_Type();
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252 static const TypeFunc* slow_arraycopy_Type(); // the full routine
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253
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254 // leaf on stack replacement interpreter accessor types
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255 static const TypeFunc* osr_end_Type();
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256
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257 // leaf methodData routine types
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258 static const TypeFunc* profile_receiver_type_Type();
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259
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260 // leaf on stack replacement interpreter accessor types
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261 static const TypeFunc* fetch_int_Type();
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262 static const TypeFunc* fetch_long_Type();
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263 static const TypeFunc* fetch_float_Type();
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264 static const TypeFunc* fetch_double_Type();
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265 static const TypeFunc* fetch_oop_Type();
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266 static const TypeFunc* fetch_monitor_Type();
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267
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268 static const TypeFunc* register_finalizer_Type();
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269
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270 // Dtrace support
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271 static const TypeFunc* dtrace_method_entry_exit_Type();
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272 static const TypeFunc* dtrace_object_alloc_Type();
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273
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274 # ifdef ENABLE_ZAP_DEAD_LOCALS
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275 static const TypeFunc* zap_dead_locals_Type();
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276 # endif
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277
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278 private:
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279 static NamedCounter * volatile _named_counters;
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280
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281 public:
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282 // helper function which creates a named counter labeled with the
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283 // if they are available
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284 static NamedCounter* new_named_counter(JVMState* jvms, NamedCounter::CounterTag tag);
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285
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286 // dumps all the named counters
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287 static void print_named_counters();
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288
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289 };
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