1 /* 2 * Copyright (c) 2011, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 #ifndef SHARE_VM_JVMCI_JVMCI_CODE_INSTALLER_HPP 25 #define SHARE_VM_JVMCI_JVMCI_CODE_INSTALLER_HPP 26 27 #include "jvmci/jvmciCompiler.hpp" 28 #include "jvmci/jvmciEnv.hpp" 29 #include "code/nativeInst.hpp" 30 31 class RelocBuffer : public StackObj { 32 enum { stack_size = 1024 }; 33 public: 34 RelocBuffer() : _size(0), _buffer(0) {} 35 ~RelocBuffer(); 36 void ensure_size(size_t bytes); 37 void set_size(size_t bytes); 38 address begin() const; 39 size_t size() const { return _size; } 40 private: 41 size_t _size; 42 char _static_buffer[stack_size]; 43 char *_buffer; 44 }; 45 46 class CodeMetadata { 47 public: 48 CodeMetadata() {} 49 50 CodeBlob* get_code_blob() const { return _cb; } 51 52 PcDesc* get_pc_desc() const { return _pc_desc; } 53 int get_nr_pc_desc() const { return _nr_pc_desc; } 54 55 u_char* get_scopes_desc() const { return _scopes_desc; } 56 int get_scopes_size() const { return _nr_scopes_desc; } 57 58 RelocBuffer* get_reloc_buffer() { return &_reloc_buffer; } 59 60 ExceptionHandlerTable* get_exception_table() { return _exception_table; } 61 62 void set_pc_desc(PcDesc* desc, int count) { 63 _pc_desc = desc; 64 _nr_pc_desc = count; 65 } 66 67 void set_scopes(u_char* scopes, int size) { 68 _scopes_desc = scopes; 69 _nr_scopes_desc = size; 70 } 71 72 void set_exception_table(ExceptionHandlerTable* table) { 73 _exception_table = table; 74 } 75 76 private: 77 CodeBlob* _cb; 78 PcDesc* _pc_desc; 79 int _nr_pc_desc; 80 81 u_char* _scopes_desc; 82 int _nr_scopes_desc; 83 84 RelocBuffer _reloc_buffer; 85 ExceptionHandlerTable* _exception_table; 86 }; 87 88 /* 89 * This class handles the conversion from a InstalledCode to a CodeBlob or an nmethod. 90 */ 91 class CodeInstaller : public StackObj { 92 friend class JVMCIVMStructs; 93 private: 94 enum MarkId { 95 VERIFIED_ENTRY = 1, 96 UNVERIFIED_ENTRY = 2, 97 OSR_ENTRY = 3, 98 EXCEPTION_HANDLER_ENTRY = 4, 99 DEOPT_HANDLER_ENTRY = 5, 100 INVOKEINTERFACE = 6, 101 INVOKEVIRTUAL = 7, 102 INVOKESTATIC = 8, 103 INVOKESPECIAL = 9, 104 INLINE_INVOKE = 10, 105 POLL_NEAR = 11, 106 POLL_RETURN_NEAR = 12, 107 POLL_FAR = 13, 108 POLL_RETURN_FAR = 14, 109 CARD_TABLE_ADDRESS = 15, 110 CARD_TABLE_SHIFT = 16, 111 HEAP_TOP_ADDRESS = 17, 112 HEAP_END_ADDRESS = 18, 113 NARROW_KLASS_BASE_ADDRESS = 19, 114 CRC_TABLE_ADDRESS = 20, 115 INVOKE_INVALID = -1 116 }; 117 118 Arena _arena; 119 120 jobject _data_section_handle; 121 jobject _data_section_patches_handle; 122 jobject _sites_handle; 123 CodeOffsets _offsets; 124 125 jobject _code_handle; 126 jint _code_size; 127 jint _total_frame_size; 128 jint _orig_pc_offset; 129 jint _parameter_count; 130 jint _constants_size; 131 #ifndef PRODUCT 132 jobject _comments_handle; 133 #endif 134 135 bool _has_wide_vector; 136 jobject _word_kind_handle; 137 138 MarkId _next_call_type; 139 address _invoke_mark_pc; 140 141 CodeSection* _instructions; 142 CodeSection* _constants; 143 144 OopRecorder* _oop_recorder; 145 DebugInformationRecorder* _debug_recorder; 146 Dependencies* _dependencies; 147 ExceptionHandlerTable _exception_handler_table; 148 149 static ConstantOopWriteValue* _oop_null_scope_value; 150 static ConstantIntValue* _int_m1_scope_value; 151 static ConstantIntValue* _int_0_scope_value; 152 static ConstantIntValue* _int_1_scope_value; 153 static ConstantIntValue* _int_2_scope_value; 154 static LocationValue* _illegal_value; 155 156 jint pd_next_offset(NativeInstruction* inst, jint pc_offset, Handle method, TRAPS); 157 void pd_patch_OopConstant(int pc_offset, Handle constant, TRAPS); 158 void pd_patch_MetaspaceConstant(int pc_offset, Handle constant, TRAPS); 159 void pd_patch_DataSectionReference(int pc_offset, int data_offset, TRAPS); 160 void pd_relocate_ForeignCall(NativeInstruction* inst, jlong foreign_call_destination, TRAPS); 161 void pd_relocate_JavaMethod(Handle method, jint pc_offset, TRAPS); 162 void pd_relocate_poll(address pc, jint mark, TRAPS); 163 164 objArrayOop sites() { return (objArrayOop) JNIHandles::resolve(_sites_handle); } 165 arrayOop code() { return (arrayOop) JNIHandles::resolve(_code_handle); } 166 arrayOop data_section() { return (arrayOop) JNIHandles::resolve(_data_section_handle); } 167 objArrayOop data_section_patches() { return (objArrayOop) JNIHandles::resolve(_data_section_patches_handle); } 168 #ifndef PRODUCT 169 objArrayOop comments() { return (objArrayOop) JNIHandles::resolve(_comments_handle); } 170 #endif 171 172 oop word_kind() { return (oop) JNIHandles::resolve(_word_kind_handle); } 173 174 public: 175 176 CodeInstaller() : _arena(mtCompiler) {} 177 178 JVMCIEnv::CodeInstallResult gather_metadata(Handle target, Handle compiled_code, CodeMetadata& metadata, TRAPS); 179 JVMCIEnv::CodeInstallResult install(JVMCICompiler* compiler, Handle target, Handle compiled_code, CodeBlob*& cb, Handle installed_code, Handle speculation_log, TRAPS); 180 181 static address runtime_call_target_address(oop runtime_call); 182 static VMReg get_hotspot_reg(jint jvmciRegisterNumber, TRAPS); 183 static bool is_general_purpose_reg(VMReg hotspotRegister); 184 185 const OopMapSet* oopMapSet() const { return _debug_recorder->_oopmaps; } 186 187 protected: 188 Location::Type get_oop_type(Handle value); 189 ScopeValue* get_scope_value(Handle value, BasicType type, GrowableArray<ScopeValue*>* objects, ScopeValue* &second, TRAPS); 190 MonitorValue* get_monitor_value(Handle value, GrowableArray<ScopeValue*>* objects, TRAPS); 191 192 void* record_metadata_reference(Handle constant, TRAPS); 193 #ifdef _LP64 194 narrowKlass record_narrow_metadata_reference(Handle constant, TRAPS); 195 #endif 196 197 // extract the fields of the HotSpotCompiledCode 198 void initialize_fields(oop target, oop target_method, TRAPS); 199 void initialize_dependencies(oop target_method, OopRecorder* oop_recorder, TRAPS); 200 201 int estimate_stubs_size(TRAPS); 202 203 // perform data and call relocation on the CodeBuffer 204 JVMCIEnv::CodeInstallResult initialize_buffer(CodeBuffer& buffer, TRAPS); 205 206 void assumption_NoFinalizableSubclass(Handle assumption); 207 void assumption_ConcreteSubtype(Handle assumption); 208 void assumption_LeafType(Handle assumption); 209 void assumption_ConcreteMethod(Handle assumption); 210 void assumption_CallSiteTargetValue(Handle assumption); 211 212 void site_Safepoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS); 213 void site_Infopoint(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS); 214 void site_Call(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS); 215 void site_DataPatch(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS); 216 void site_Mark(CodeBuffer& buffer, jint pc_offset, Handle site, TRAPS); 217 void site_ExceptionHandler(jint pc_offset, Handle site); 218 219 OopMap* create_oop_map(Handle debug_info, TRAPS); 220 221 /** 222 * Specifies the level of detail to record for a scope. 223 */ 224 enum ScopeMode { 225 // Only record a method and BCI 226 BytecodePosition, 227 // Record a method, bci and JVM frame state 228 FullFrame 229 }; 230 231 void record_scope(jint pc_offset, Handle debug_info, ScopeMode scope_mode, TRAPS); 232 void record_scope(jint pc_offset, Handle position, ScopeMode scope_mode, GrowableArray<ScopeValue*>* objects, TRAPS); 233 void record_object_value(ObjectValue* sv, Handle value, GrowableArray<ScopeValue*>* objects, TRAPS); 234 235 GrowableArray<ScopeValue*>* record_virtual_objects(Handle debug_info, TRAPS); 236 237 int estimateStubSpace(int static_call_stubs); 238 }; 239 240 /** 241 * Gets the Method metaspace object from a HotSpotResolvedJavaMethodImpl Java object. 242 */ 243 Method* getMethodFromHotSpotMethod(oop hotspot_method); 244 245 246 247 #endif // SHARE_VM_JVMCI_JVMCI_CODE_INSTALLER_HPP