abstractInterpreter.hpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 1997, 2012, 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 25#ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP 26#define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP 27 28#include "code/stubs.hpp" 29#include "interpreter/bytecodes.hpp" 30#include "runtime/vmThread.hpp" 31#include "utilities/top.hpp" 32#ifdef TARGET_ARCH_MODEL_x86_32 33# include "interp_masm_x86_32.hpp" 34#endif 35#ifdef TARGET_ARCH_MODEL_x86_64 36# include "interp_masm_x86_64.hpp" 37#endif 38#ifdef TARGET_ARCH_MODEL_sparc 39# include "interp_masm_sparc.hpp" 40#endif 41#ifdef TARGET_ARCH_MODEL_zero 42# include "interp_masm_zero.hpp" 43#endif 44#ifdef TARGET_ARCH_MODEL_arm 45# include "interp_masm_arm.hpp" 46#endif 47#ifdef TARGET_ARCH_MODEL_ppc 48# include "interp_masm_ppc.hpp" 49#endif 50#ifdef TARGET_OS_FAMILY_linux 51# include "thread_linux.inline.hpp" 52#endif 53#ifdef TARGET_OS_FAMILY_solaris 54# include "thread_solaris.inline.hpp" 55#endif 56#ifdef TARGET_OS_FAMILY_windows 57# include "thread_windows.inline.hpp" 58#endif 59#ifdef TARGET_OS_FAMILY_bsd 60# include "thread_bsd.inline.hpp" 61#endif 62 63// This file contains the platform-independent parts 64// of the abstract interpreter and the abstract interpreter generator. 65 66// Organization of the interpreter(s). There exists two different interpreters in hotpot 67// an assembly language version (aka template interpreter) and a high level language version 68// (aka c++ interpreter). Th division of labor is as follows: 69 70// Template Interpreter C++ Interpreter Functionality 71// 72// templateTable* bytecodeInterpreter* actual interpretation of bytecodes 73// 74// templateInterpreter* cppInterpreter* generation of assembly code that creates 75// and manages interpreter runtime frames. 76// Also code for populating interpreter 77// frames created during deoptimization. 78// 79// For both template and c++ interpreter. There are common files for aspects of the interpreter 80// that are generic to both interpreters. This is the layout: 81// 82// abstractInterpreter.hpp: generic description of the interpreter. 83// interpreter*: generic frame creation and handling. 84// 85 86//------------------------------------------------------------------------------------------------------------------------ 87// The C++ interface to the bytecode interpreter(s). 88 89class AbstractInterpreter: AllStatic { 90 friend class VMStructs; 91 friend class Interpreter; 92 friend class CppInterpreterGenerator; 93 public: 94 enum MethodKind { 95 zerolocals, // method needs locals initialization 96 zerolocals_synchronized, // method needs locals initialization & is synchronized 97 native, // native method 98 native_synchronized, // native method & is synchronized 99 empty, // empty method (code: _return) 100 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) 101 abstract, // abstract method (throws an AbstractMethodException) 102 method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc. 103 method_handle_invoke_LAST = (method_handle_invoke_FIRST 104 + (vmIntrinsics::LAST_MH_SIG_POLY 105 - vmIntrinsics::FIRST_MH_SIG_POLY)), 106 java_lang_math_sin, // implementation of java.lang.Math.sin (x) 107 java_lang_math_cos, // implementation of java.lang.Math.cos (x) 108 java_lang_math_tan, // implementation of java.lang.Math.tan (x) 109 java_lang_math_abs, // implementation of java.lang.Math.abs (x) 110 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) 111 java_lang_math_log, // implementation of java.lang.Math.log (x) 112 java_lang_math_log10, // implementation of java.lang.Math.log10 (x) 113 java_lang_math_pow, // implementation of java.lang.Math.pow (x,y) 114 java_lang_math_exp, // implementation of java.lang.Math.exp (x) 115 java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get() 116 number_of_method_entries, 117 invalid = -1 118 }; 119 120 // Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc. 121 static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) { 122 if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST) 123 return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) ); 124 else 125 return vmIntrinsics::_none; 126 } 127 128 enum SomeConstants { 129 number_of_result_handlers = 10 // number of result handlers for native calls 130 }; 131 132 protected: 133 static StubQueue* _code; // the interpreter code (codelets) 134 135 static bool _notice_safepoints; // true if safepoints are activated 136 137 static address _native_entry_begin; // Region for native entry code 138 static address _native_entry_end; 139 140 // method entry points 141 static address _entry_table[number_of_method_entries]; // entry points for a given method 142 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers 143 static address _slow_signature_handler; // the native method generic (slow) signature handler 144 145 static address _rethrow_exception_entry; // rethrows an activation in previous frame 146 147 friend class AbstractInterpreterGenerator; 148 friend class InterpreterGenerator; 149 friend class InterpreterMacroAssembler; 150 151 public: 152 // Initialization/debugging 153 static void initialize(); 154 static StubQueue* code() { return _code; } 155 156 157 // Method activation 158 static MethodKind method_kind(methodHandle m); 159 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } 160 static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); } 161 162 // used for bootstrapping method handles: 163 static void set_entry_for_kind(MethodKind k, address e); 164 165 static void print_method_kind(MethodKind kind) PRODUCT_RETURN; 166 167 static bool can_be_compiled(methodHandle m); 168 169 // Runtime support 170 171 // length = invoke bytecode length (to advance to next bytecode) 172 static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } 173 static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } 174 175 static address rethrow_exception_entry() { return _rethrow_exception_entry; } 176 177 // Activation size in words for a method that is just being called. 178 // Parameters haven't been pushed so count them too. 179 static int size_top_interpreter_activation(Method* method); 180 181 // Deoptimization support 182 // Compute the entry address for continuation after 183 static address deopt_continue_after_entry(Method* method, 184 address bcp, 185 int callee_parameters, 186 bool is_top_frame); 187 // Compute the entry address for reexecution 188 static address deopt_reexecute_entry(Method* method, address bcp); 189 // Deoptimization should reexecute this bytecode 190 static bool bytecode_should_reexecute(Bytecodes::Code code); 191 192 // share implementation of size_activation and layout_activation: 193 static int size_activation(Method* method, 194 int temps, 195 int popframe_args, 196 int monitors, 197 int caller_actual_parameters, 198 int callee_params, 199 int callee_locals, 200 bool is_top_frame) { 201 return layout_activation(method, 202 temps, 203 popframe_args, 204 monitors, 205 caller_actual_parameters, 206 callee_params, 207 callee_locals, 208 (frame*)NULL, 209 (frame*)NULL, 210 is_top_frame); 211 } 212 213 static int layout_activation(Method* method, 214 int temps, 215 int popframe_args, 216 int monitors, 217 int caller_actual_parameters, 218 int callee_params, 219 int callee_locals, 220 frame* caller, 221 frame* interpreter_frame, 222 bool is_top_frame); 223 224 // Runtime support 225 static bool is_not_reached( methodHandle method, int bci); 226 // Safepoint support 227 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint 228 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints 229 230 // Support for native calls 231 static address slow_signature_handler() { return _slow_signature_handler; } 232 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } 233 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table 234 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } 235 // Debugging/printing 236 static void print(); // prints the interpreter code 237 238 public: 239 // Interpreter helpers 240 const static int stackElementWords = 1; 241 const static int stackElementSize = stackElementWords * wordSize; 242 const static int logStackElementSize = LogBytesPerWord; 243 244 // Local values relative to locals[n] 245 static int local_offset_in_bytes(int n) { 246 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); 247 } 248 249 // access to stacked values according to type: 250 static oop* oop_addr_in_slot(intptr_t* slot_addr) { 251 return (oop*) slot_addr; 252 } 253 static jint* int_addr_in_slot(intptr_t* slot_addr) { 254 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) 255 // big-endian LP64 256 return (jint*)(slot_addr + 1) - 1; 257 else 258 return (jint*) slot_addr; 259 } 260 static jlong long_in_slot(intptr_t* slot_addr) { 261 if (sizeof(intptr_t) >= sizeof(jlong)) { 262 return *(jlong*) slot_addr; 263 } else { 264 return Bytes::get_native_u8((address)slot_addr); 265 } 266 } 267 static void set_long_in_slot(intptr_t* slot_addr, jlong value) { 268 if (sizeof(intptr_t) >= sizeof(jlong)) { 269 *(jlong*) slot_addr = value; 270 } else { 271 Bytes::put_native_u8((address)slot_addr, value); 272 } 273 } 274 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { 275 switch (type) { 276 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; 277 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; 278 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; 279 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; 280 case T_INT: value->i = *int_addr_in_slot(slot_addr); break; 281 case T_LONG: value->j = long_in_slot(slot_addr); break; 282 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; 283 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; 284 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; 285 default: ShouldNotReachHere(); 286 } 287 } 288 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { 289 switch (type) { 290 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; 291 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; 292 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; 293 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; 294 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; 295 case T_LONG: set_long_in_slot(slot_addr, value->j); break; 296 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; 297 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; 298 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; 299 default: ShouldNotReachHere(); 300 } 301 } 302}; 303 304//------------------------------------------------------------------------------------------------------------------------ 305// The interpreter generator. 306 307class Template; 308class AbstractInterpreterGenerator: public StackObj { 309 protected: 310 InterpreterMacroAssembler* _masm; 311 312 // shared code sequences 313 // Converter for native abi result to tosca result 314 address generate_result_handler_for(BasicType type); 315 address generate_slow_signature_handler(); 316 317 // entry point generator 318 address generate_method_entry(AbstractInterpreter::MethodKind kind); 319 320 void bang_stack_shadow_pages(bool native_call); 321 322 void generate_all(); 323 324 public: 325 AbstractInterpreterGenerator(StubQueue* _code); 326}; 327 328#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP 329