Tue, 24 Dec 2013 11:48:39 -0800
8029233: Update copyright year to match last edit in jdk8 hotspot repository for 2013
Summary: Copyright year updated for files modified during 2013
Reviewed-by: twisti, iveresov
1 /*
2 * Copyright (c) 1997, 2013, 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 */
25 #ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
26 #define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
28 #include "code/stubs.hpp"
29 #include "interpreter/bytecodes.hpp"
30 #include "runtime/thread.inline.hpp"
31 #include "runtime/vmThread.hpp"
32 #include "utilities/top.hpp"
33 #ifdef TARGET_ARCH_x86
34 # include "interp_masm_x86.hpp"
35 #endif
36 #ifdef TARGET_ARCH_MODEL_sparc
37 # include "interp_masm_sparc.hpp"
38 #endif
39 #ifdef TARGET_ARCH_MODEL_zero
40 # include "interp_masm_zero.hpp"
41 #endif
42 #ifdef TARGET_ARCH_MODEL_arm
43 # include "interp_masm_arm.hpp"
44 #endif
45 #ifdef TARGET_ARCH_MODEL_ppc
46 # include "interp_masm_ppc.hpp"
47 #endif
49 // This file contains the platform-independent parts
50 // of the abstract interpreter and the abstract interpreter generator.
52 // Organization of the interpreter(s). There exists two different interpreters in hotpot
53 // an assembly language version (aka template interpreter) and a high level language version
54 // (aka c++ interpreter). Th division of labor is as follows:
56 // Template Interpreter C++ Interpreter Functionality
57 //
58 // templateTable* bytecodeInterpreter* actual interpretation of bytecodes
59 //
60 // templateInterpreter* cppInterpreter* generation of assembly code that creates
61 // and manages interpreter runtime frames.
62 // Also code for populating interpreter
63 // frames created during deoptimization.
64 //
65 // For both template and c++ interpreter. There are common files for aspects of the interpreter
66 // that are generic to both interpreters. This is the layout:
67 //
68 // abstractInterpreter.hpp: generic description of the interpreter.
69 // interpreter*: generic frame creation and handling.
70 //
72 //------------------------------------------------------------------------------------------------------------------------
73 // The C++ interface to the bytecode interpreter(s).
75 class AbstractInterpreter: AllStatic {
76 friend class VMStructs;
77 friend class Interpreter;
78 friend class CppInterpreterGenerator;
79 public:
80 enum MethodKind {
81 zerolocals, // method needs locals initialization
82 zerolocals_synchronized, // method needs locals initialization & is synchronized
83 native, // native method
84 native_synchronized, // native method & is synchronized
85 empty, // empty method (code: _return)
86 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
87 abstract, // abstract method (throws an AbstractMethodException)
88 method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
89 method_handle_invoke_LAST = (method_handle_invoke_FIRST
90 + (vmIntrinsics::LAST_MH_SIG_POLY
91 - vmIntrinsics::FIRST_MH_SIG_POLY)),
92 java_lang_math_sin, // implementation of java.lang.Math.sin (x)
93 java_lang_math_cos, // implementation of java.lang.Math.cos (x)
94 java_lang_math_tan, // implementation of java.lang.Math.tan (x)
95 java_lang_math_abs, // implementation of java.lang.Math.abs (x)
96 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
97 java_lang_math_log, // implementation of java.lang.Math.log (x)
98 java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
99 java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
100 java_lang_math_exp, // implementation of java.lang.Math.exp (x)
101 java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
102 java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
103 java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
104 java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
105 number_of_method_entries,
106 invalid = -1
107 };
109 // Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
110 static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
111 if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
112 return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
113 else
114 return vmIntrinsics::_none;
115 }
117 enum SomeConstants {
118 number_of_result_handlers = 10 // number of result handlers for native calls
119 };
121 protected:
122 static StubQueue* _code; // the interpreter code (codelets)
124 static bool _notice_safepoints; // true if safepoints are activated
126 static address _native_entry_begin; // Region for native entry code
127 static address _native_entry_end;
129 // method entry points
130 static address _entry_table[number_of_method_entries]; // entry points for a given method
131 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
132 static address _slow_signature_handler; // the native method generic (slow) signature handler
134 static address _rethrow_exception_entry; // rethrows an activation in previous frame
136 friend class AbstractInterpreterGenerator;
137 friend class InterpreterGenerator;
138 friend class InterpreterMacroAssembler;
140 public:
141 // Initialization/debugging
142 static void initialize();
143 static StubQueue* code() { return _code; }
146 // Method activation
147 static MethodKind method_kind(methodHandle m);
148 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
149 static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
151 // used for bootstrapping method handles:
152 static void set_entry_for_kind(MethodKind k, address e);
154 static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
156 static bool can_be_compiled(methodHandle m);
158 // Runtime support
160 // length = invoke bytecode length (to advance to next bytecode)
161 static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
162 static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
164 static address rethrow_exception_entry() { return _rethrow_exception_entry; }
166 // Activation size in words for a method that is just being called.
167 // Parameters haven't been pushed so count them too.
168 static int size_top_interpreter_activation(Method* method);
170 // Deoptimization support
171 // Compute the entry address for continuation after
172 static address deopt_continue_after_entry(Method* method,
173 address bcp,
174 int callee_parameters,
175 bool is_top_frame);
176 // Compute the entry address for reexecution
177 static address deopt_reexecute_entry(Method* method, address bcp);
178 // Deoptimization should reexecute this bytecode
179 static bool bytecode_should_reexecute(Bytecodes::Code code);
181 // share implementation of size_activation and layout_activation:
182 static int size_activation(Method* method,
183 int temps,
184 int popframe_args,
185 int monitors,
186 int caller_actual_parameters,
187 int callee_params,
188 int callee_locals,
189 bool is_top_frame,
190 bool is_bottom_frame) {
191 return layout_activation(method,
192 temps,
193 popframe_args,
194 monitors,
195 caller_actual_parameters,
196 callee_params,
197 callee_locals,
198 (frame*)NULL,
199 (frame*)NULL,
200 is_top_frame,
201 is_bottom_frame);
202 }
204 static int layout_activation(Method* method,
205 int temps,
206 int popframe_args,
207 int monitors,
208 int caller_actual_parameters,
209 int callee_params,
210 int callee_locals,
211 frame* caller,
212 frame* interpreter_frame,
213 bool is_top_frame,
214 bool is_bottom_frame);
216 // Runtime support
217 static bool is_not_reached( methodHandle method, int bci);
218 // Safepoint support
219 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
220 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
222 // Support for native calls
223 static address slow_signature_handler() { return _slow_signature_handler; }
224 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
225 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
226 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
227 // Debugging/printing
228 static void print(); // prints the interpreter code
230 public:
231 // Interpreter helpers
232 const static int stackElementWords = 1;
233 const static int stackElementSize = stackElementWords * wordSize;
234 const static int logStackElementSize = LogBytesPerWord;
236 // Local values relative to locals[n]
237 static int local_offset_in_bytes(int n) {
238 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
239 }
241 // access to stacked values according to type:
242 static oop* oop_addr_in_slot(intptr_t* slot_addr) {
243 return (oop*) slot_addr;
244 }
245 static jint* int_addr_in_slot(intptr_t* slot_addr) {
246 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
247 // big-endian LP64
248 return (jint*)(slot_addr + 1) - 1;
249 else
250 return (jint*) slot_addr;
251 }
252 static jlong long_in_slot(intptr_t* slot_addr) {
253 if (sizeof(intptr_t) >= sizeof(jlong)) {
254 return *(jlong*) slot_addr;
255 } else {
256 return Bytes::get_native_u8((address)slot_addr);
257 }
258 }
259 static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
260 if (sizeof(intptr_t) >= sizeof(jlong)) {
261 *(jlong*) slot_addr = value;
262 } else {
263 Bytes::put_native_u8((address)slot_addr, value);
264 }
265 }
266 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
267 switch (type) {
268 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
269 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
270 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
271 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
272 case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
273 case T_LONG: value->j = long_in_slot(slot_addr); break;
274 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
275 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
276 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
277 default: ShouldNotReachHere();
278 }
279 }
280 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
281 switch (type) {
282 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
283 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
284 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
285 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
286 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
287 case T_LONG: set_long_in_slot(slot_addr, value->j); break;
288 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
289 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
290 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
291 default: ShouldNotReachHere();
292 }
293 }
294 };
296 //------------------------------------------------------------------------------------------------------------------------
297 // The interpreter generator.
299 class Template;
300 class AbstractInterpreterGenerator: public StackObj {
301 protected:
302 InterpreterMacroAssembler* _masm;
304 // shared code sequences
305 // Converter for native abi result to tosca result
306 address generate_result_handler_for(BasicType type);
307 address generate_slow_signature_handler();
309 // entry point generator
310 address generate_method_entry(AbstractInterpreter::MethodKind kind);
312 void bang_stack_shadow_pages(bool native_call);
314 void generate_all();
315 void initialize_method_handle_entries();
317 public:
318 AbstractInterpreterGenerator(StubQueue* _code);
319 };
321 #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP