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annotate src/share/vm/interpreter/abstractInterpreter.hpp @ 3109:3664989976e2
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author | Gilles Duboscq <gilles.duboscq@oracle.com> |
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date | Fri, 01 Jul 2011 12:57:10 +0200 |
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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) | |
107 number_of_method_entries, | |
108 invalid = -1 | |
109 }; | |
110 | |
111 enum SomeConstants { | |
112 number_of_result_handlers = 10 // number of result handlers for native calls | |
113 }; | |
114 | |
115 protected: | |
116 static StubQueue* _code; // the interpreter code (codelets) | |
117 | |
118 static bool _notice_safepoints; // true if safepoints are activated | |
119 | |
120 static address _native_entry_begin; // Region for native entry code | |
121 static address _native_entry_end; | |
122 | |
123 // method entry points | |
124 static address _entry_table[number_of_method_entries]; // entry points for a given method | |
125 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers | |
126 static address _slow_signature_handler; // the native method generic (slow) signature handler | |
127 | |
128 static address _rethrow_exception_entry; // rethrows an activation in previous frame | |
129 | |
130 friend class AbstractInterpreterGenerator; | |
131 friend class InterpreterGenerator; | |
132 friend class InterpreterMacroAssembler; | |
133 | |
134 public: | |
135 // Initialization/debugging | |
136 static void initialize(); | |
137 static StubQueue* code() { return _code; } | |
138 | |
139 | |
140 // Method activation | |
141 static MethodKind method_kind(methodHandle m); | |
142 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } | |
143 static address entry_for_method(methodHandle m) { return _entry_table[method_kind(m)]; } | |
144 | |
145 static void print_method_kind(MethodKind kind) PRODUCT_RETURN; | |
146 | |
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147 static bool can_be_compiled(methodHandle m); |
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148 |
0 | 149 // Runtime support |
150 | |
151 // length = invoke bytecode length (to advance to next bytecode) | |
152 static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
153 static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
154 | |
155 static address rethrow_exception_entry() { return _rethrow_exception_entry; } | |
156 | |
157 // Activation size in words for a method that is just being called. | |
158 // Parameters haven't been pushed so count them too. | |
159 static int size_top_interpreter_activation(methodOop method); | |
160 | |
161 // Deoptimization support | |
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162 // Compute the entry address for continuation after |
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163 static address deopt_continue_after_entry(methodOop method, |
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164 address bcp, |
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165 int callee_parameters, |
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166 bool is_top_frame); |
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167 // Compute the entry address for reexecution |
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168 static address deopt_reexecute_entry(methodOop method, address bcp); |
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169 // Deoptimization should reexecute this bytecode |
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170 static bool bytecode_should_reexecute(Bytecodes::Code code); |
0 | 171 |
172 // share implementation of size_activation and layout_activation: | |
173 static int size_activation(methodOop method, | |
174 int temps, | |
175 int popframe_args, | |
176 int monitors, | |
177 int callee_params, | |
178 int callee_locals, | |
179 bool is_top_frame); | |
180 | |
181 static int layout_activation(methodOop method, | |
182 int temps, | |
183 int popframe_args, | |
184 int monitors, | |
185 int callee_params, | |
186 int callee_locals, | |
187 frame* caller, | |
188 frame* interpreter_frame, | |
189 bool is_top_frame); | |
190 | |
191 // Runtime support | |
192 static bool is_not_reached( methodHandle method, int bci); | |
193 // Safepoint support | |
194 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint | |
195 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints | |
196 | |
197 // Support for native calls | |
198 static address slow_signature_handler() { return _slow_signature_handler; } | |
199 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } | |
200 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table | |
201 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } | |
202 // Debugging/printing | |
203 static void print(); // prints the interpreter code | |
204 | |
205 public: | |
1506 | 206 // Interpreter helpers |
207 const static int stackElementWords = 1; | |
208 const static int stackElementSize = stackElementWords * wordSize; | |
209 const static int logStackElementSize = LogBytesPerWord; | |
0 | 210 |
211 // Local values relative to locals[n] | |
212 static int local_offset_in_bytes(int n) { | |
1506 | 213 return ((frame::interpreter_frame_expression_stack_direction() * n) * stackElementSize); |
0 | 214 } |
215 | |
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216 // access to stacked values according to type: |
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217 static oop* oop_addr_in_slot(intptr_t* slot_addr) { |
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218 return (oop*) slot_addr; |
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219 } |
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220 static jint* int_addr_in_slot(intptr_t* slot_addr) { |
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221 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) |
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222 // big-endian LP64 |
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223 return (jint*)(slot_addr + 1) - 1; |
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224 else |
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225 return (jint*) slot_addr; |
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226 } |
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227 static jlong long_in_slot(intptr_t* slot_addr) { |
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228 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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229 return *(jlong*) slot_addr; |
1506 | 230 } else { |
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231 return Bytes::get_native_u8((address)slot_addr); |
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232 } |
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233 } |
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234 static void set_long_in_slot(intptr_t* slot_addr, jlong value) { |
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235 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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236 *(jlong*) slot_addr = value; |
1506 | 237 } else { |
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238 Bytes::put_native_u8((address)slot_addr, value); |
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239 } |
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240 } |
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241 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
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242 switch (type) { |
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243 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; |
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244 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; |
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245 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; |
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246 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; |
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247 case T_INT: value->i = *int_addr_in_slot(slot_addr); break; |
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248 case T_LONG: value->j = long_in_slot(slot_addr); break; |
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249 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; |
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250 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; |
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251 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; |
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252 default: ShouldNotReachHere(); |
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253 } |
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254 } |
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255 static void set_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: *int_addr_in_slot(slot_addr) = (value->z != 0); break; |
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258 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; |
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259 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; |
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260 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; |
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261 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; |
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262 case T_LONG: set_long_in_slot(slot_addr, value->j); break; |
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263 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; |
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264 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; |
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265 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; |
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266 default: ShouldNotReachHere(); |
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267 } |
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268 } |
0 | 269 }; |
270 | |
271 //------------------------------------------------------------------------------------------------------------------------ | |
272 // The interpreter generator. | |
273 | |
274 class Template; | |
275 class AbstractInterpreterGenerator: public StackObj { | |
276 protected: | |
277 InterpreterMacroAssembler* _masm; | |
278 | |
279 // shared code sequences | |
280 // Converter for native abi result to tosca result | |
281 address generate_result_handler_for(BasicType type); | |
282 address generate_slow_signature_handler(); | |
283 | |
284 // entry point generator | |
285 address generate_method_entry(AbstractInterpreter::MethodKind kind); | |
286 | |
287 void bang_stack_shadow_pages(bool native_call); | |
288 | |
289 void generate_all(); | |
290 | |
291 public: | |
292 AbstractInterpreterGenerator(StubQueue* _code); | |
293 }; | |
1972 | 294 |
295 #endif // SHARE_VM_INTERPRETER_ABSTRACTINTERPRETER_HPP |