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1 /* |
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2 * Copyright 1999-2007 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 class StubAssembler; |
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26 |
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27 // The Runtime1 holds all assembly stubs and VM |
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28 // runtime routines needed by code code generated |
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29 // by the Compiler1. |
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30 |
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31 #define RUNTIME1_STUBS(stub, last_entry) \ |
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32 stub(dtrace_object_alloc) \ |
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33 stub(unwind_exception) \ |
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34 stub(forward_exception) \ |
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35 stub(throw_range_check_failed) /* throws ArrayIndexOutOfBoundsException */ \ |
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36 stub(throw_index_exception) /* throws IndexOutOfBoundsException */ \ |
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37 stub(throw_div0_exception) \ |
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38 stub(throw_null_pointer_exception) \ |
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39 stub(register_finalizer) \ |
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40 stub(new_instance) \ |
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41 stub(fast_new_instance) \ |
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42 stub(fast_new_instance_init_check) \ |
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43 stub(new_type_array) \ |
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44 stub(new_object_array) \ |
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45 stub(new_multi_array) \ |
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46 stub(handle_exception_nofpu) /* optimized version that does not preserve fpu registers */ \ |
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47 stub(handle_exception) \ |
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48 stub(throw_array_store_exception) \ |
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49 stub(throw_class_cast_exception) \ |
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50 stub(throw_incompatible_class_change_error) \ |
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51 stub(slow_subtype_check) \ |
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52 stub(monitorenter) \ |
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53 stub(monitorenter_nofpu) /* optimized version that does not preserve fpu registers */ \ |
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54 stub(monitorexit) \ |
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55 stub(monitorexit_nofpu) /* optimized version that does not preserve fpu registers */ \ |
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56 stub(access_field_patching) \ |
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57 stub(load_klass_patching) \ |
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58 stub(jvmti_exception_throw) \ |
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59 stub(fpu2long_stub) \ |
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60 stub(counter_overflow) \ |
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61 last_entry(number_of_ids) |
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62 |
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63 #define DECLARE_STUB_ID(x) x ## _id , |
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64 #define DECLARE_LAST_STUB_ID(x) x |
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65 #define STUB_NAME(x) #x " Runtime1 stub", |
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66 #define LAST_STUB_NAME(x) #x " Runtime1 stub" |
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67 |
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68 class Runtime1: public AllStatic { |
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69 friend class VMStructs; |
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70 friend class ArrayCopyStub; |
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71 private: |
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72 static int desired_max_code_buffer_size() { |
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73 return (int) NMethodSizeLimit; // default 256K or 512K |
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74 } |
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75 static int desired_max_constant_size() { |
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76 return (int) NMethodSizeLimit / 10; // about 25K |
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77 } |
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78 |
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79 // Note: This buffers is allocated once at startup since allocation |
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80 // for each compilation seems to be too expensive (at least on Intel |
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81 // win32). |
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82 static BufferBlob* _buffer_blob; |
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83 |
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84 public: |
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85 enum StubID { |
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86 RUNTIME1_STUBS(DECLARE_STUB_ID, DECLARE_LAST_STUB_ID) |
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87 }; |
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88 |
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89 // statistics |
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90 #ifndef PRODUCT |
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91 static int _resolve_invoke_cnt; |
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92 static int _handle_wrong_method_cnt; |
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93 static int _ic_miss_cnt; |
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94 static int _generic_arraycopy_cnt; |
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95 static int _primitive_arraycopy_cnt; |
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96 static int _oop_arraycopy_cnt; |
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97 static int _arraycopy_slowcase_cnt; |
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98 static int _new_type_array_slowcase_cnt; |
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99 static int _new_object_array_slowcase_cnt; |
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100 static int _new_instance_slowcase_cnt; |
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101 static int _new_multi_array_slowcase_cnt; |
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102 static int _monitorenter_slowcase_cnt; |
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103 static int _monitorexit_slowcase_cnt; |
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104 static int _patch_code_slowcase_cnt; |
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105 static int _throw_range_check_exception_count; |
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106 static int _throw_index_exception_count; |
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107 static int _throw_div0_exception_count; |
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108 static int _throw_null_pointer_exception_count; |
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109 static int _throw_class_cast_exception_count; |
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110 static int _throw_incompatible_class_change_error_count; |
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111 static int _throw_array_store_exception_count; |
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112 static int _throw_count; |
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113 #endif |
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114 |
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115 private: |
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116 static bool _is_initialized; |
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117 static CodeBlob* _blobs[number_of_ids]; |
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118 static const char* _blob_names[]; |
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119 |
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120 // stub generation |
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121 static void generate_blob_for(StubID id); |
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122 static OopMapSet* generate_code_for(StubID id, StubAssembler* masm); |
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123 static OopMapSet* generate_exception_throw(StubAssembler* sasm, address target, bool has_argument); |
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124 static void generate_handle_exception(StubAssembler *sasm, OopMapSet* oop_maps, OopMap* oop_map, bool ignore_fpu_registers = false); |
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125 static void generate_unwind_exception(StubAssembler *sasm); |
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126 static OopMapSet* generate_patching(StubAssembler* sasm, address target); |
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127 |
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128 static OopMapSet* generate_stub_call(StubAssembler* sasm, Register result, address entry, |
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129 Register arg1 = noreg, Register arg2 = noreg, Register arg3 = noreg); |
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130 |
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131 // runtime entry points |
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132 static void new_instance (JavaThread* thread, klassOopDesc* klass); |
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133 static void new_type_array (JavaThread* thread, klassOopDesc* klass, jint length); |
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134 static void new_object_array(JavaThread* thread, klassOopDesc* klass, jint length); |
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135 static void new_multi_array (JavaThread* thread, klassOopDesc* klass, int rank, jint* dims); |
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136 |
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137 #ifdef TIERED |
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138 static void counter_overflow(JavaThread* thread, int bci); |
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139 #endif // TIERED |
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140 |
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141 static void unimplemented_entry (JavaThread* thread, StubID id); |
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142 |
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143 static address exception_handler_for_pc(JavaThread* thread); |
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144 static void post_jvmti_exception_throw(JavaThread* thread); |
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145 |
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146 static void throw_range_check_exception(JavaThread* thread, int index); |
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147 static void throw_index_exception(JavaThread* thread, int index); |
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148 static void throw_div0_exception(JavaThread* thread); |
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149 static void throw_null_pointer_exception(JavaThread* thread); |
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150 static void throw_class_cast_exception(JavaThread* thread, oopDesc* obect); |
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151 static void throw_incompatible_class_change_error(JavaThread* thread); |
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152 static void throw_array_store_exception(JavaThread* thread); |
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153 |
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154 static void monitorenter(JavaThread* thread, oopDesc* obj, BasicObjectLock* lock); |
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155 static void monitorexit (JavaThread* thread, BasicObjectLock* lock); |
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156 |
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157 static int access_field_patching(JavaThread* thread); |
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158 static int move_klass_patching(JavaThread* thread); |
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159 |
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160 static void patch_code(JavaThread* thread, StubID stub_id); |
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161 |
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162 public: |
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163 static BufferBlob* get_buffer_blob(); |
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164 static void setup_code_buffer(CodeBuffer* cb, int call_stub_estimate); |
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165 |
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166 // initialization |
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167 static bool is_initialized() { return _is_initialized; } |
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168 static void initialize(); |
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169 static void initialize_pd(); |
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170 |
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171 // stubs |
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172 static CodeBlob* blob_for (StubID id); |
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173 static address entry_for(StubID id) { return blob_for(id)->instructions_begin(); } |
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174 static const char* name_for (StubID id); |
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175 static const char* name_for_address(address entry); |
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176 |
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177 // method tracing |
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178 static void trace_block_entry(jint block_id); |
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179 |
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180 #ifndef PRODUCT |
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181 static address throw_count_address() { return (address)&_throw_count; } |
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182 #endif |
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183 |
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184 // directly accessible leaf routine |
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185 static int arraycopy(oopDesc* src, int src_pos, oopDesc* dst, int dst_pos, int length); |
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186 static void primitive_arraycopy(HeapWord* src, HeapWord* dst, int length); |
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187 static void oop_arraycopy(HeapWord* src, HeapWord* dst, int length); |
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188 |
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189 static void print_statistics() PRODUCT_RETURN; |
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190 }; |