Mercurial > hg > truffle
annotate src/share/vm/interpreter/abstractInterpreter.hpp @ 3758:e2ce15aa3daf
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date | Tue, 14 Jun 2011 15:20:55 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 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 | |
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44 #ifdef TARGET_ARCH_MODEL_arm |
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45 # include "interp_masm_arm.hpp" |
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46 #endif |
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47 #ifdef TARGET_ARCH_MODEL_ppc |
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48 # include "interp_masm_ppc.hpp" |
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49 #endif |
1972 | 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 | |
605 | 60 // This file contains the platform-independent parts |
0 | 61 // of the abstract interpreter and the abstract interpreter generator. |
62 | |
63 // Organization of the interpreter(s). There exists two different interpreters in hotpot | |
64 // an assembly language version (aka template interpreter) and a high level language version | |
65 // (aka c++ interpreter). Th division of labor is as follows: | |
66 | |
67 // Template Interpreter C++ Interpreter Functionality | |
68 // | |
69 // templateTable* bytecodeInterpreter* actual interpretation of bytecodes | |
70 // | |
71 // templateInterpreter* cppInterpreter* generation of assembly code that creates | |
72 // and manages interpreter runtime frames. | |
73 // Also code for populating interpreter | |
74 // frames created during deoptimization. | |
75 // | |
76 // For both template and c++ interpreter. There are common files for aspects of the interpreter | |
77 // that are generic to both interpreters. This is the layout: | |
78 // | |
79 // abstractInterpreter.hpp: generic description of the interpreter. | |
80 // interpreter*: generic frame creation and handling. | |
81 // | |
82 | |
83 //------------------------------------------------------------------------------------------------------------------------ | |
84 // The C++ interface to the bytecode interpreter(s). | |
85 | |
86 class AbstractInterpreter: AllStatic { | |
87 friend class VMStructs; | |
88 friend class Interpreter; | |
89 friend class CppInterpreterGenerator; | |
90 public: | |
91 enum MethodKind { | |
92 zerolocals, // method needs locals initialization | |
93 zerolocals_synchronized, // method needs locals initialization & is synchronized | |
94 native, // native method | |
95 native_synchronized, // native method & is synchronized | |
96 empty, // empty method (code: _return) | |
97 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) | |
98 abstract, // abstract method (throws an AbstractMethodException) | |
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99 method_handle, // java.lang.invoke.MethodHandles::invoke |
0 | 100 java_lang_math_sin, // implementation of java.lang.Math.sin (x) |
101 java_lang_math_cos, // implementation of java.lang.Math.cos (x) | |
102 java_lang_math_tan, // implementation of java.lang.Math.tan (x) | |
103 java_lang_math_abs, // implementation of java.lang.Math.abs (x) | |
104 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) | |
105 java_lang_math_log, // implementation of java.lang.Math.log (x) | |
106 java_lang_math_log10, // implementation of java.lang.Math.log10 (x) | |
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107 java_lang_ref_reference_get, // implementation of java.lang.ref.Reference.get() |
0 | 108 number_of_method_entries, |
109 invalid = -1 | |
110 }; | |
111 | |
112 enum SomeConstants { | |
113 number_of_result_handlers = 10 // number of result handlers for native calls | |
114 }; | |
115 | |
116 protected: | |
117 static StubQueue* _code; // the interpreter code (codelets) | |
118 | |
119 static bool _notice_safepoints; // true if safepoints are activated | |
120 | |
121 static address _native_entry_begin; // Region for native entry code | |
122 static address _native_entry_end; | |
123 | |
124 // method entry points | |
125 static address _entry_table[number_of_method_entries]; // entry points for a given method | |
126 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers | |
127 static address _slow_signature_handler; // the native method generic (slow) signature handler | |
128 | |
129 static address _rethrow_exception_entry; // rethrows an activation in previous frame | |
130 | |
131 friend class AbstractInterpreterGenerator; | |
132 friend class InterpreterGenerator; | |
133 friend class InterpreterMacroAssembler; | |
134 | |
135 public: | |
136 // Initialization/debugging | |
137 static void initialize(); | |
138 static StubQueue* code() { return _code; } | |
139 | |
140 | |
141 // Method activation | |
142 static MethodKind method_kind(methodHandle m); | |
143 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } | |
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144 static address entry_for_method(methodHandle m) { return entry_for_kind(method_kind(m)); } |
0 | 145 |
146 static void print_method_kind(MethodKind kind) PRODUCT_RETURN; | |
147 | |
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148 static bool can_be_compiled(methodHandle m); |
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149 |
0 | 150 // Runtime support |
151 | |
152 // length = invoke bytecode length (to advance to next bytecode) | |
153 static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
154 static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
155 | |
156 static address rethrow_exception_entry() { return _rethrow_exception_entry; } | |
157 | |
158 // Activation size in words for a method that is just being called. | |
159 // Parameters haven't been pushed so count them too. | |
160 static int size_top_interpreter_activation(methodOop method); | |
161 | |
162 // Deoptimization support | |
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163 // Compute the entry address for continuation after |
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164 static address deopt_continue_after_entry(methodOop method, |
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165 address bcp, |
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166 int callee_parameters, |
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167 bool is_top_frame); |
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168 // Compute the entry address for reexecution |
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169 static address deopt_reexecute_entry(methodOop method, address bcp); |
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170 // Deoptimization should reexecute this bytecode |
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171 static bool bytecode_should_reexecute(Bytecodes::Code code); |
0 | 172 |
173 // share implementation of size_activation and layout_activation: | |
174 static int size_activation(methodOop method, | |
175 int temps, | |
176 int popframe_args, | |
177 int monitors, | |
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178 int caller_actual_parameters, |
0 | 179 int callee_params, |
180 int callee_locals, | |
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181 bool is_top_frame) { |
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182 return layout_activation(method, |
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183 temps, |
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184 popframe_args, |
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185 monitors, |
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186 caller_actual_parameters, |
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187 callee_params, |
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188 callee_locals, |
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189 (frame*)NULL, |
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190 (frame*)NULL, |
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191 is_top_frame); |
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192 } |
0 | 193 |
194 static int layout_activation(methodOop method, | |
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195 int temps, |
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196 int popframe_args, |
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197 int monitors, |
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198 int caller_actual_parameters, |
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199 int callee_params, |
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200 int callee_locals, |
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201 frame* caller, |
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202 frame* interpreter_frame, |
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203 bool is_top_frame); |
0 | 204 |
205 // Runtime support | |
206 static bool is_not_reached( methodHandle method, int bci); | |
207 // Safepoint support | |
208 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint | |
209 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints | |
210 | |
211 // Support for native calls | |
212 static address slow_signature_handler() { return _slow_signature_handler; } | |
213 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } | |
214 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table | |
215 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } | |
216 // Debugging/printing | |
217 static void print(); // prints the interpreter code | |
218 | |
219 public: | |
1506 | 220 // Interpreter helpers |
221 const static int stackElementWords = 1; | |
222 const static int stackElementSize = stackElementWords * wordSize; | |
223 const static int logStackElementSize = LogBytesPerWord; | |
0 | 224 |
225 // Local values relative to locals[n] | |
226 static int local_offset_in_bytes(int n) { | |
1506 | 227 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); |
0 | 228 } |
229 | |
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230 // access to stacked values according to type: |
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231 static oop* oop_addr_in_slot(intptr_t* slot_addr) { |
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232 return (oop*) slot_addr; |
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233 } |
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234 static jint* int_addr_in_slot(intptr_t* slot_addr) { |
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235 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) |
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236 // big-endian LP64 |
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237 return (jint*)(slot_addr + 1) - 1; |
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238 else |
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239 return (jint*) slot_addr; |
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240 } |
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241 static jlong long_in_slot(intptr_t* slot_addr) { |
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242 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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243 return *(jlong*) slot_addr; |
1506 | 244 } else { |
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245 return Bytes::get_native_u8((address)slot_addr); |
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246 } |
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247 } |
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248 static void set_long_in_slot(intptr_t* slot_addr, jlong value) { |
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249 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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250 *(jlong*) slot_addr = value; |
1506 | 251 } else { |
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252 Bytes::put_native_u8((address)slot_addr, value); |
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253 } |
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254 } |
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255 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
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256 switch (type) { |
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257 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; |
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258 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; |
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259 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; |
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260 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; |
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261 case T_INT: value->i = *int_addr_in_slot(slot_addr); break; |
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262 case T_LONG: value->j = long_in_slot(slot_addr); break; |
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263 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; |
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264 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; |
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265 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; |
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266 default: ShouldNotReachHere(); |
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267 } |
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268 } |
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269 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
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270 switch (type) { |
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271 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; |
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272 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; |
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273 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; |
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274 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; |
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275 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; |
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276 case T_LONG: set_long_in_slot(slot_addr, value->j); break; |
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277 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; |
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278 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; |
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279 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; |
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280 default: ShouldNotReachHere(); |
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281 } |
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282 } |
0 | 283 }; |
284 | |
285 //------------------------------------------------------------------------------------------------------------------------ | |
286 // The interpreter generator. | |
287 | |
288 class Template; | |
289 class AbstractInterpreterGenerator: public StackObj { | |
290 protected: | |
291 InterpreterMacroAssembler* _masm; | |
292 | |
293 // shared code sequences | |
294 // Converter for native abi result to tosca result | |
295 address generate_result_handler_for(BasicType type); | |
296 address generate_slow_signature_handler(); | |
297 | |
298 // entry point generator | |
299 address generate_method_entry(AbstractInterpreter::MethodKind kind); | |
300 | |
301 void bang_stack_shadow_pages(bool native_call); | |
302 | |
303 void generate_all(); | |
304 | |
305 public: | |
306 AbstractInterpreterGenerator(StubQueue* _code); | |
307 }; | |
1972 | 308 |
309 #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP |