abstractInterpreter.hpp revision 1879:f95d63e2154a
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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_OS_FAMILY_linux 45# include "thread_linux.inline.hpp" 46#endif 47#ifdef TARGET_OS_FAMILY_solaris 48# include "thread_solaris.inline.hpp" 49#endif 50#ifdef TARGET_OS_FAMILY_windows 51# include "thread_windows.inline.hpp" 52#endif 53 54// This file contains the platform-independent parts 55// of the abstract interpreter and the abstract interpreter generator. 56 57// Organization of the interpreter(s). There exists two different interpreters in hotpot 58// an assembly language version (aka template interpreter) and a high level language version 59// (aka c++ interpreter). Th division of labor is as follows: 60 61// Template Interpreter C++ Interpreter Functionality 62// 63// templateTable* bytecodeInterpreter* actual interpretation of bytecodes 64// 65// templateInterpreter* cppInterpreter* generation of assembly code that creates 66// and manages interpreter runtime frames. 67// Also code for populating interpreter 68// frames created during deoptimization. 69// 70// For both template and c++ interpreter. There are common files for aspects of the interpreter 71// that are generic to both interpreters. This is the layout: 72// 73// abstractInterpreter.hpp: generic description of the interpreter. 74// interpreter*: generic frame creation and handling. 75// 76 77//------------------------------------------------------------------------------------------------------------------------ 78// The C++ interface to the bytecode interpreter(s). 79 80class AbstractInterpreter: AllStatic { 81 friend class VMStructs; 82 friend class Interpreter; 83 friend class CppInterpreterGenerator; 84 public: 85 enum MethodKind { 86 zerolocals, // method needs locals initialization 87 zerolocals_synchronized, // method needs locals initialization & is synchronized 88 native, // native method 89 native_synchronized, // native method & is synchronized 90 empty, // empty method (code: _return) 91 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) 92 abstract, // abstract method (throws an AbstractMethodException) 93 method_handle, // java.dyn.MethodHandles::invoke 94 java_lang_math_sin, // implementation of java.lang.Math.sin (x) 95 java_lang_math_cos, // implementation of java.lang.Math.cos (x) 96 java_lang_math_tan, // implementation of java.lang.Math.tan (x) 97 java_lang_math_abs, // implementation of java.lang.Math.abs (x) 98 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) 99 java_lang_math_log, // implementation of java.lang.Math.log (x) 100 java_lang_math_log10, // implementation of java.lang.Math.log10 (x) 101 number_of_method_entries, 102 invalid = -1 103 }; 104 105 enum SomeConstants { 106 number_of_result_handlers = 10 // number of result handlers for native calls 107 }; 108 109 protected: 110 static StubQueue* _code; // the interpreter code (codelets) 111 112 static bool _notice_safepoints; // true if safepoints are activated 113 114 static address _native_entry_begin; // Region for native entry code 115 static address _native_entry_end; 116 117 // method entry points 118 static address _entry_table[number_of_method_entries]; // entry points for a given method 119 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers 120 static address _slow_signature_handler; // the native method generic (slow) signature handler 121 122 static address _rethrow_exception_entry; // rethrows an activation in previous frame 123 124 friend class AbstractInterpreterGenerator; 125 friend class InterpreterGenerator; 126 friend class InterpreterMacroAssembler; 127 128 public: 129 // Initialization/debugging 130 static void initialize(); 131 static StubQueue* code() { return _code; } 132 133 134 // Method activation 135 static MethodKind method_kind(methodHandle m); 136 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } 137 static address entry_for_method(methodHandle m) { return _entry_table[method_kind(m)]; } 138 139 static void print_method_kind(MethodKind kind) PRODUCT_RETURN; 140 141 static bool can_be_compiled(methodHandle m); 142 143 // Runtime support 144 145 // length = invoke bytecode length (to advance to next bytecode) 146 static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } 147 static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } 148 149 static address rethrow_exception_entry() { return _rethrow_exception_entry; } 150 151 // Activation size in words for a method that is just being called. 152 // Parameters haven't been pushed so count them too. 153 static int size_top_interpreter_activation(methodOop method); 154 155 // Deoptimization support 156 // Compute the entry address for continuation after 157 static address deopt_continue_after_entry(methodOop method, 158 address bcp, 159 int callee_parameters, 160 bool is_top_frame); 161 // Compute the entry address for reexecution 162 static address deopt_reexecute_entry(methodOop method, address bcp); 163 // Deoptimization should reexecute this bytecode 164 static bool bytecode_should_reexecute(Bytecodes::Code code); 165 166 // share implementation of size_activation and layout_activation: 167 static int size_activation(methodOop method, 168 int temps, 169 int popframe_args, 170 int monitors, 171 int callee_params, 172 int callee_locals, 173 bool is_top_frame); 174 175 static int layout_activation(methodOop method, 176 int temps, 177 int popframe_args, 178 int monitors, 179 int callee_params, 180 int callee_locals, 181 frame* caller, 182 frame* interpreter_frame, 183 bool is_top_frame); 184 185 // Runtime support 186 static bool is_not_reached( methodHandle method, int bci); 187 // Safepoint support 188 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint 189 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints 190 191 // Support for native calls 192 static address slow_signature_handler() { return _slow_signature_handler; } 193 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } 194 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table 195 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } 196 // Debugging/printing 197 static void print(); // prints the interpreter code 198 199 public: 200 // Interpreter helpers 201 const static int stackElementWords = 1; 202 const static int stackElementSize = stackElementWords * wordSize; 203 const static int logStackElementSize = LogBytesPerWord; 204 205 // Local values relative to locals[n] 206 static int local_offset_in_bytes(int n) { 207 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); 208 } 209 210 // access to stacked values according to type: 211 static oop* oop_addr_in_slot(intptr_t* slot_addr) { 212 return (oop*) slot_addr; 213 } 214 static jint* int_addr_in_slot(intptr_t* slot_addr) { 215 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) 216 // big-endian LP64 217 return (jint*)(slot_addr + 1) - 1; 218 else 219 return (jint*) slot_addr; 220 } 221 static jlong long_in_slot(intptr_t* slot_addr) { 222 if (sizeof(intptr_t) >= sizeof(jlong)) { 223 return *(jlong*) slot_addr; 224 } else { 225 return Bytes::get_native_u8((address)slot_addr); 226 } 227 } 228 static void set_long_in_slot(intptr_t* slot_addr, jlong value) { 229 if (sizeof(intptr_t) >= sizeof(jlong)) { 230 *(jlong*) slot_addr = value; 231 } else { 232 Bytes::put_native_u8((address)slot_addr, value); 233 } 234 } 235 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { 236 switch (type) { 237 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; 238 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; 239 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; 240 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; 241 case T_INT: value->i = *int_addr_in_slot(slot_addr); break; 242 case T_LONG: value->j = long_in_slot(slot_addr); break; 243 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; 244 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; 245 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; 246 default: ShouldNotReachHere(); 247 } 248 } 249 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { 250 switch (type) { 251 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; 252 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; 253 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; 254 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; 255 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; 256 case T_LONG: set_long_in_slot(slot_addr, value->j); break; 257 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; 258 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; 259 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; 260 default: ShouldNotReachHere(); 261 } 262 } 263}; 264 265//------------------------------------------------------------------------------------------------------------------------ 266// The interpreter generator. 267 268class Template; 269class AbstractInterpreterGenerator: public StackObj { 270 protected: 271 InterpreterMacroAssembler* _masm; 272 273 // shared code sequences 274 // Converter for native abi result to tosca result 275 address generate_result_handler_for(BasicType type); 276 address generate_slow_signature_handler(); 277 278 // entry point generator 279 address generate_method_entry(AbstractInterpreter::MethodKind kind); 280 281 void bang_stack_shadow_pages(bool native_call); 282 283 void generate_all(); 284 285 public: 286 AbstractInterpreterGenerator(StubQueue* _code); 287}; 288 289#endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP 290