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src/share/vm/interpreter/abstractInterpreter.hpp@eef07cd490d4
src/share/vm/interpreter/abstractInterpreter.hpp
Wed, 03 Jul 2019 20:42:37 +0800
- author
- aoqi
- date
- Wed, 03 Jul 2019 20:42:37 +0800
- changeset 9637
- eef07cd490d4
- parent 7994
- 04ff2f6cd0eb
- permissions
- -rw-r--r--
Merge
1 /*
2 * Copyright (c) 1997, 2015, 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 /*
26 * This file has been modified by Loongson Technology in 2015. These
27 * modifications are Copyright (c) 2015 Loongson Technology, and are made
28 * available on the same license terms set forth above.
29 */
31 #ifndef SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
32 #define SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
34 #include "code/stubs.hpp"
35 #include "interpreter/bytecodes.hpp"
36 #include "runtime/thread.inline.hpp"
37 #include "runtime/vmThread.hpp"
38 #include "utilities/top.hpp"
39 #if defined INTERP_MASM_MD_HPP
40 # include INTERP_MASM_MD_HPP
41 #elif defined TARGET_ARCH_x86
42 # include "interp_masm_x86.hpp"
43 #elif defined TARGET_ARCH_MODEL_sparc
44 # include "interp_masm_sparc.hpp"
45 #elif defined TARGET_ARCH_MODEL_zero
46 # include "interp_masm_zero.hpp"
47 #elif defined TARGET_ARCH_MODEL_ppc_64
48 # include "interp_masm_ppc_64.hpp"
49 #elif defined TARGET_ARCH_MODEL_mips_64
50 # include "interp_masm_mips_64.hpp"
51 #endif
53 // This file contains the platform-independent parts
54 // of the abstract interpreter and the abstract interpreter generator.
56 // Organization of the interpreter(s). There exists two different interpreters in hotpot
57 // an assembly language version (aka template interpreter) and a high level language version
58 // (aka c++ interpreter). Th division of labor is as follows:
60 // Template Interpreter C++ Interpreter Functionality
61 //
62 // templateTable* bytecodeInterpreter* actual interpretation of bytecodes
63 //
64 // templateInterpreter* cppInterpreter* generation of assembly code that creates
65 // and manages interpreter runtime frames.
66 // Also code for populating interpreter
67 // frames created during deoptimization.
68 //
69 // For both template and c++ interpreter. There are common files for aspects of the interpreter
70 // that are generic to both interpreters. This is the layout:
71 //
72 // abstractInterpreter.hpp: generic description of the interpreter.
73 // interpreter*: generic frame creation and handling.
74 //
76 //------------------------------------------------------------------------------------------------------------------------
77 // The C++ interface to the bytecode interpreter(s).
79 class AbstractInterpreter: AllStatic {
80 friend class VMStructs;
81 friend class Interpreter;
82 friend class CppInterpreterGenerator;
83 public:
84 enum MethodKind {
85 zerolocals, // method needs locals initialization
86 zerolocals_synchronized, // method needs locals initialization & is synchronized
87 native, // native method
88 native_synchronized, // native method & is synchronized
89 empty, // empty method (code: _return)
90 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return)
91 abstract, // abstract method (throws an AbstractMethodException)
92 method_handle_invoke_FIRST, // java.lang.invoke.MethodHandles::invokeExact, etc.
93 method_handle_invoke_LAST = (method_handle_invoke_FIRST
94 + (vmIntrinsics::LAST_MH_SIG_POLY
95 - vmIntrinsics::FIRST_MH_SIG_POLY)),
96 java_lang_math_sin, // implementation of java.lang.Math.sin (x)
97 java_lang_math_cos, // implementation of java.lang.Math.cos (x)
98 java_lang_math_tan, // implementation of java.lang.Math.tan (x)
99 java_lang_math_abs, // implementation of java.lang.Math.abs (x)
100 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x)
101 java_lang_math_log, // implementation of java.lang.Math.log (x)
102 java_lang_math_log10, // implementation of java.lang.Math.log10 (x)
103 java_lang_math_pow, // implementation of java.lang.Math.pow (x,y)
104 java_lang_math_exp, // implementation of java.lang.Math.exp (x)
105 java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get()
106 java_util_zip_CRC32_update, // implementation of java.util.zip.CRC32.update()
107 java_util_zip_CRC32_updateBytes, // implementation of java.util.zip.CRC32.updateBytes()
108 java_util_zip_CRC32_updateByteBuffer, // implementation of java.util.zip.CRC32.updateByteBuffer()
109 number_of_method_entries,
110 invalid = -1
111 };
113 // Conversion from the part of the above enum to vmIntrinsics::_invokeExact, etc.
114 static vmIntrinsics::ID method_handle_intrinsic(MethodKind kind) {
115 if (kind >= method_handle_invoke_FIRST && kind <= method_handle_invoke_LAST)
116 return (vmIntrinsics::ID)( vmIntrinsics::FIRST_MH_SIG_POLY + (kind - method_handle_invoke_FIRST) );
117 else
118 return vmIntrinsics::_none;
119 }
121 enum SomeConstants {
122 number_of_result_handlers = 10 // number of result handlers for native calls
123 };
125 protected:
126 static StubQueue* _code; // the interpreter code (codelets)
128 static bool _notice_safepoints; // true if safepoints are activated
130 static address _native_entry_begin; // Region for native entry code
131 static address _native_entry_end;
133 // method entry points
134 static address _entry_table[number_of_method_entries]; // entry points for a given method
135 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers
136 static address _slow_signature_handler; // the native method generic (slow) signature handler
138 static address _rethrow_exception_entry; // rethrows an activation in previous frame
140 friend class AbstractInterpreterGenerator;
141 friend class InterpreterGenerator;
142 friend class InterpreterMacroAssembler;
144 public:
145 // Initialization/debugging
146 static void initialize();
147 static StubQueue* code() { return _code; }
150 // Method activation
151 static MethodKind method_kind(methodHandle m);
152 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; }
153 static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); }
155 // used for bootstrapping method handles:
156 static void set_entry_for_kind(MethodKind k, address e);
158 static void print_method_kind(MethodKind kind) PRODUCT_RETURN;
160 static bool can_be_compiled(methodHandle m);
162 // Runtime support
164 // length = invoke bytecode length (to advance to next bytecode)
165 static address deopt_entry(TosState state, int length) { ShouldNotReachHere(); return NULL; }
166 static address return_entry(TosState state, int length, Bytecodes::Code code) { ShouldNotReachHere(); return NULL; }
168 static address rethrow_exception_entry() { return _rethrow_exception_entry; }
170 // Activation size in words for a method that is just being called.
171 // Parameters haven't been pushed so count them too.
172 static int size_top_interpreter_activation(Method* method);
174 // Deoptimization support
175 // Compute the entry address for continuation after
176 static address deopt_continue_after_entry(Method* method,
177 address bcp,
178 int callee_parameters,
179 bool is_top_frame);
180 // Compute the entry address for reexecution
181 static address deopt_reexecute_entry(Method* method, address bcp);
182 // Deoptimization should reexecute this bytecode
183 static bool bytecode_should_reexecute(Bytecodes::Code code);
185 // deoptimization support
186 static int size_activation(int max_stack,
187 int temps,
188 int extra_args,
189 int monitors,
190 int callee_params,
191 int callee_locals,
192 bool is_top_frame);
194 static void layout_activation(Method* method,
195 int temps,
196 int popframe_args,
197 int monitors,
198 int caller_actual_parameters,
199 int callee_params,
200 int callee_locals,
201 frame* caller,
202 frame* interpreter_frame,
203 bool is_top_frame,
204 bool is_bottom_frame);
206 // Runtime support
207 static bool is_not_reached( methodHandle method, int bci);
208 // Safepoint support
209 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint
210 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints
212 // Support for native calls
213 static address slow_signature_handler() { return _slow_signature_handler; }
214 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; }
215 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table
216 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; }
217 // Debugging/printing
218 static void print(); // prints the interpreter code
220 public:
221 // Interpreter helpers
222 const static int stackElementWords = 1;
223 const static int stackElementSize = stackElementWords * wordSize;
224 const static int logStackElementSize = LogBytesPerWord;
226 // Local values relative to locals[n]
227 static int local_offset_in_bytes(int n) {
228 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize);
229 }
231 // access to stacked values according to type:
232 static oop* oop_addr_in_slot(intptr_t* slot_addr) {
233 return (oop*) slot_addr;
234 }
235 static jint* int_addr_in_slot(intptr_t* slot_addr) {
236 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different())
237 // big-endian LP64
238 return (jint*)(slot_addr + 1) - 1;
239 else
240 return (jint*) slot_addr;
241 }
242 static jlong long_in_slot(intptr_t* slot_addr) {
243 if (sizeof(intptr_t) >= sizeof(jlong)) {
244 return *(jlong*) slot_addr;
245 } else {
246 return Bytes::get_native_u8((address)slot_addr);
247 }
248 }
249 static void set_long_in_slot(intptr_t* slot_addr, jlong value) {
250 if (sizeof(intptr_t) >= sizeof(jlong)) {
251 *(jlong*) slot_addr = value;
252 } else {
253 Bytes::put_native_u8((address)slot_addr, value);
254 }
255 }
256 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
257 switch (type) {
258 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break;
259 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break;
260 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break;
261 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break;
262 case T_INT: value->i = *int_addr_in_slot(slot_addr); break;
263 case T_LONG: value->j = long_in_slot(slot_addr); break;
264 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break;
265 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break;
266 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break;
267 default: ShouldNotReachHere();
268 }
269 }
270 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) {
271 switch (type) {
272 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break;
273 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break;
274 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break;
275 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break;
276 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break;
277 case T_LONG: set_long_in_slot(slot_addr, value->j); break;
278 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break;
279 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break;
280 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break;
281 default: ShouldNotReachHere();
282 }
283 }
284 };
286 //------------------------------------------------------------------------------------------------------------------------
287 // The interpreter generator.
289 class Template;
290 class AbstractInterpreterGenerator: public StackObj {
291 protected:
292 InterpreterMacroAssembler* _masm;
294 // shared code sequences
295 // Converter for native abi result to tosca result
296 address generate_result_handler_for(BasicType type);
297 address generate_slow_signature_handler();
299 // entry point generator
300 address generate_method_entry(AbstractInterpreter::MethodKind kind);
302 void bang_stack_shadow_pages(bool native_call);
304 void generate_all();
305 void initialize_method_handle_entries();
307 public:
308 AbstractInterpreterGenerator(StubQueue* _code);
309 };
311 #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP
