Mercurial > hg > graal-compiler
annotate src/share/vm/interpreter/abstractInterpreter.hpp @ 1174:ddb7834449d0
6849984: Value methods for platform dependent math functions constant fold incorrectly
Reviewed-by: kvn, twisti
| author | never |
|---|---|
| date | Fri, 15 Jan 2010 11:53:33 -0800 |
| parents | 9987d9d5eb0e |
| children | 2338d41fbd81 |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright 1997-2010 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 605 | 25 // This file contains the platform-independent parts |
| 0 | 26 // of the abstract interpreter and the abstract interpreter generator. |
| 27 | |
| 28 // Organization of the interpreter(s). There exists two different interpreters in hotpot | |
| 29 // an assembly language version (aka template interpreter) and a high level language version | |
| 30 // (aka c++ interpreter). Th division of labor is as follows: | |
| 31 | |
| 32 // Template Interpreter C++ Interpreter Functionality | |
| 33 // | |
| 34 // templateTable* bytecodeInterpreter* actual interpretation of bytecodes | |
| 35 // | |
| 36 // templateInterpreter* cppInterpreter* generation of assembly code that creates | |
| 37 // and manages interpreter runtime frames. | |
| 38 // Also code for populating interpreter | |
| 39 // frames created during deoptimization. | |
| 40 // | |
| 41 // For both template and c++ interpreter. There are common files for aspects of the interpreter | |
| 42 // that are generic to both interpreters. This is the layout: | |
| 43 // | |
| 44 // abstractInterpreter.hpp: generic description of the interpreter. | |
| 45 // interpreter*: generic frame creation and handling. | |
| 46 // | |
| 47 | |
| 48 //------------------------------------------------------------------------------------------------------------------------ | |
| 49 // The C++ interface to the bytecode interpreter(s). | |
| 50 | |
| 51 class AbstractInterpreter: AllStatic { | |
| 52 friend class VMStructs; | |
| 53 friend class Interpreter; | |
| 54 friend class CppInterpreterGenerator; | |
| 55 public: | |
| 56 enum MethodKind { | |
| 57 zerolocals, // method needs locals initialization | |
| 58 zerolocals_synchronized, // method needs locals initialization & is synchronized | |
| 59 native, // native method | |
| 60 native_synchronized, // native method & is synchronized | |
| 61 empty, // empty method (code: _return) | |
| 62 accessor, // accessor method (code: _aload_0, _getfield, _(a|i)return) | |
| 63 abstract, // abstract method (throws an AbstractMethodException) | |
| 710 | 64 method_handle, // java.dyn.MethodHandles::invoke |
| 0 | 65 java_lang_math_sin, // implementation of java.lang.Math.sin (x) |
| 66 java_lang_math_cos, // implementation of java.lang.Math.cos (x) | |
| 67 java_lang_math_tan, // implementation of java.lang.Math.tan (x) | |
| 68 java_lang_math_abs, // implementation of java.lang.Math.abs (x) | |
| 69 java_lang_math_sqrt, // implementation of java.lang.Math.sqrt (x) | |
| 70 java_lang_math_log, // implementation of java.lang.Math.log (x) | |
| 71 java_lang_math_log10, // implementation of java.lang.Math.log10 (x) | |
| 72 number_of_method_entries, | |
| 73 invalid = -1 | |
| 74 }; | |
| 75 | |
| 76 enum SomeConstants { | |
| 77 number_of_result_handlers = 10 // number of result handlers for native calls | |
| 78 }; | |
| 79 | |
| 80 protected: | |
| 81 static StubQueue* _code; // the interpreter code (codelets) | |
| 82 | |
| 83 static bool _notice_safepoints; // true if safepoints are activated | |
| 84 | |
| 85 static address _native_entry_begin; // Region for native entry code | |
| 86 static address _native_entry_end; | |
| 87 | |
| 88 // method entry points | |
| 89 static address _entry_table[number_of_method_entries]; // entry points for a given method | |
| 90 static address _native_abi_to_tosca[number_of_result_handlers]; // for native method result handlers | |
| 91 static address _slow_signature_handler; // the native method generic (slow) signature handler | |
| 92 | |
| 93 static address _rethrow_exception_entry; // rethrows an activation in previous frame | |
| 94 | |
| 95 friend class AbstractInterpreterGenerator; | |
| 96 friend class InterpreterGenerator; | |
| 97 friend class InterpreterMacroAssembler; | |
| 98 | |
| 99 public: | |
| 100 // Initialization/debugging | |
| 101 static void initialize(); | |
| 102 static StubQueue* code() { return _code; } | |
| 103 | |
| 104 | |
| 105 // Method activation | |
| 106 static MethodKind method_kind(methodHandle m); | |
| 107 static address entry_for_kind(MethodKind k) { assert(0 <= k && k < number_of_method_entries, "illegal kind"); return _entry_table[k]; } | |
| 108 static address entry_for_method(methodHandle m) { return _entry_table[method_kind(m)]; } | |
| 109 | |
| 110 static void print_method_kind(MethodKind kind) PRODUCT_RETURN; | |
| 111 | |
|
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112 static bool can_be_compiled(methodHandle m); |
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113 |
| 0 | 114 // Runtime support |
| 115 | |
| 116 // length = invoke bytecode length (to advance to next bytecode) | |
| 117 static address deopt_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
| 118 static address return_entry (TosState state, int length) { ShouldNotReachHere(); return NULL; } | |
| 119 | |
| 120 static address rethrow_exception_entry() { return _rethrow_exception_entry; } | |
| 121 | |
| 122 // Activation size in words for a method that is just being called. | |
| 123 // Parameters haven't been pushed so count them too. | |
| 124 static int size_top_interpreter_activation(methodOop method); | |
| 125 | |
| 126 // Deoptimization support | |
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127 // Compute the entry address for continuation after |
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128 static address deopt_continue_after_entry(methodOop method, |
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129 address bcp, |
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130 int callee_parameters, |
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131 bool is_top_frame); |
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132 // Compute the entry address for reexecution |
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133 static address deopt_reexecute_entry(methodOop method, address bcp); |
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134 // Deoptimization should reexecute this bytecode |
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135 static bool bytecode_should_reexecute(Bytecodes::Code code); |
| 0 | 136 |
| 137 // share implementation of size_activation and layout_activation: | |
| 138 static int size_activation(methodOop method, | |
| 139 int temps, | |
| 140 int popframe_args, | |
| 141 int monitors, | |
| 142 int callee_params, | |
| 143 int callee_locals, | |
| 144 bool is_top_frame); | |
| 145 | |
| 146 static int layout_activation(methodOop method, | |
| 147 int temps, | |
| 148 int popframe_args, | |
| 149 int monitors, | |
| 150 int callee_params, | |
| 151 int callee_locals, | |
| 152 frame* caller, | |
| 153 frame* interpreter_frame, | |
| 154 bool is_top_frame); | |
| 155 | |
| 156 // Runtime support | |
| 157 static bool is_not_reached( methodHandle method, int bci); | |
| 158 // Safepoint support | |
| 159 static void notice_safepoints() { ShouldNotReachHere(); } // stops the thread when reaching a safepoint | |
| 160 static void ignore_safepoints() { ShouldNotReachHere(); } // ignores safepoints | |
| 161 | |
| 162 // Support for native calls | |
| 163 static address slow_signature_handler() { return _slow_signature_handler; } | |
| 164 static address result_handler(BasicType type) { return _native_abi_to_tosca[BasicType_as_index(type)]; } | |
| 165 static int BasicType_as_index(BasicType type); // computes index into result_handler_by_index table | |
| 166 static bool in_native_entry(address pc) { return _native_entry_begin <= pc && pc < _native_entry_end; } | |
| 167 // Debugging/printing | |
| 168 static void print(); // prints the interpreter code | |
| 169 | |
| 170 // Support for Tagged Stacks | |
| 171 // | |
| 172 // Tags are stored on the Java Expression stack above the value: | |
| 173 // | |
| 174 // tag | |
| 175 // value | |
| 176 // | |
| 177 // For double values: | |
| 178 // | |
| 179 // tag2 | |
| 180 // high word | |
| 181 // tag1 | |
| 182 // low word | |
| 183 | |
| 184 public: | |
| 185 static int stackElementWords() { return TaggedStackInterpreter ? 2 : 1; } | |
| 186 static int stackElementSize() { return stackElementWords()*wordSize; } | |
| 187 static int logStackElementSize() { return | |
| 188 TaggedStackInterpreter? LogBytesPerWord+1 : LogBytesPerWord; } | |
| 189 | |
| 190 // Tag is at pointer, value is one below for a stack growing down | |
| 191 // (or above for stack growing up) | |
| 192 static int value_offset_in_bytes() { | |
| 193 return TaggedStackInterpreter ? | |
| 194 frame::interpreter_frame_expression_stack_direction() * wordSize : 0; | |
| 195 } | |
| 196 static int tag_offset_in_bytes() { | |
| 197 assert(TaggedStackInterpreter, "should not call this"); | |
| 198 return 0; | |
| 199 } | |
| 200 | |
| 201 // Tagged Locals | |
| 202 // Locals are stored relative to Llocals: | |
| 203 // | |
| 204 // tag <- Llocals[n] | |
| 205 // value | |
| 206 // | |
| 207 // Category 2 types are indexed as: | |
| 208 // | |
| 209 // tag <- Llocals[-n] | |
| 210 // high word | |
| 211 // tag <- Llocals[-n+1] | |
| 212 // low word | |
| 213 // | |
| 214 | |
| 215 // Local values relative to locals[n] | |
| 216 static int local_offset_in_bytes(int n) { | |
| 217 return ((frame::interpreter_frame_expression_stack_direction() * n) * | |
| 218 stackElementSize()) + value_offset_in_bytes(); | |
| 219 } | |
| 220 static int local_tag_offset_in_bytes(int n) { | |
| 221 assert(TaggedStackInterpreter, "should not call this"); | |
| 222 return ((frame::interpreter_frame_expression_stack_direction() * n) * | |
| 223 stackElementSize()) + tag_offset_in_bytes(); | |
| 224 } | |
| 225 | |
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226 // access to stacked values according to type: |
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227 static oop* oop_addr_in_slot(intptr_t* slot_addr) { |
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228 return (oop*) slot_addr; |
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229 } |
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230 static jint* int_addr_in_slot(intptr_t* slot_addr) { |
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231 if ((int) sizeof(jint) < wordSize && !Bytes::is_Java_byte_ordering_different()) |
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232 // big-endian LP64 |
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233 return (jint*)(slot_addr + 1) - 1; |
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234 else |
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235 return (jint*) slot_addr; |
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236 } |
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237 static jlong long_in_slot(intptr_t* slot_addr) { |
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238 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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239 return *(jlong*) slot_addr; |
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240 } else if (!TaggedStackInterpreter) { |
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241 return Bytes::get_native_u8((address)slot_addr); |
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242 } else { |
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243 assert(sizeof(intptr_t) * 2 == sizeof(jlong), "ILP32"); |
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244 // assemble the long in memory order (not arithmetic order) |
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245 union { jlong j; jint i[2]; } u; |
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246 u.i[0] = (jint) slot_addr[0*stackElementSize()]; |
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247 u.i[1] = (jint) slot_addr[1*stackElementSize()]; |
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248 return u.j; |
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249 } |
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250 } |
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251 static void set_long_in_slot(intptr_t* slot_addr, jlong value) { |
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252 if (sizeof(intptr_t) >= sizeof(jlong)) { |
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253 *(jlong*) slot_addr = value; |
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254 } else if (!TaggedStackInterpreter) { |
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255 Bytes::put_native_u8((address)slot_addr, value); |
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256 } else { |
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257 assert(sizeof(intptr_t) * 2 == sizeof(jlong), "ILP32"); |
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258 // assemble the long in memory order (not arithmetic order) |
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259 union { jlong j; jint i[2]; } u; |
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260 u.j = value; |
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261 slot_addr[0*stackElementSize()] = (intptr_t) u.i[0]; |
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262 slot_addr[1*stackElementSize()] = (intptr_t) u.i[1]; |
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263 } |
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264 } |
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265 static void get_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
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266 switch (type) { |
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267 case T_BOOLEAN: value->z = *int_addr_in_slot(slot_addr); break; |
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268 case T_CHAR: value->c = *int_addr_in_slot(slot_addr); break; |
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269 case T_BYTE: value->b = *int_addr_in_slot(slot_addr); break; |
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270 case T_SHORT: value->s = *int_addr_in_slot(slot_addr); break; |
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271 case T_INT: value->i = *int_addr_in_slot(slot_addr); break; |
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272 case T_LONG: value->j = long_in_slot(slot_addr); break; |
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273 case T_FLOAT: value->f = *(jfloat*)int_addr_in_slot(slot_addr); break; |
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274 case T_DOUBLE: value->d = jdouble_cast(long_in_slot(slot_addr)); break; |
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275 case T_OBJECT: value->l = (jobject)*oop_addr_in_slot(slot_addr); break; |
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276 default: ShouldNotReachHere(); |
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277 } |
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278 } |
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279 static void set_jvalue_in_slot(intptr_t* slot_addr, BasicType type, jvalue* value) { |
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280 switch (type) { |
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281 case T_BOOLEAN: *int_addr_in_slot(slot_addr) = (value->z != 0); break; |
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282 case T_CHAR: *int_addr_in_slot(slot_addr) = value->c; break; |
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283 case T_BYTE: *int_addr_in_slot(slot_addr) = value->b; break; |
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284 case T_SHORT: *int_addr_in_slot(slot_addr) = value->s; break; |
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285 case T_INT: *int_addr_in_slot(slot_addr) = value->i; break; |
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286 case T_LONG: set_long_in_slot(slot_addr, value->j); break; |
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287 case T_FLOAT: *(jfloat*)int_addr_in_slot(slot_addr) = value->f; break; |
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288 case T_DOUBLE: set_long_in_slot(slot_addr, jlong_cast(value->d)); break; |
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289 case T_OBJECT: *oop_addr_in_slot(slot_addr) = (oop) value->l; break; |
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290 default: ShouldNotReachHere(); |
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291 } |
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292 } |
| 0 | 293 }; |
| 294 | |
| 295 //------------------------------------------------------------------------------------------------------------------------ | |
| 296 // The interpreter generator. | |
| 297 | |
| 298 class Template; | |
| 299 class AbstractInterpreterGenerator: public StackObj { | |
| 300 protected: | |
| 301 InterpreterMacroAssembler* _masm; | |
| 302 | |
| 303 // shared code sequences | |
| 304 // Converter for native abi result to tosca result | |
| 305 address generate_result_handler_for(BasicType type); | |
| 306 address generate_slow_signature_handler(); | |
| 307 | |
| 308 // entry point generator | |
| 309 address generate_method_entry(AbstractInterpreter::MethodKind kind); | |
| 310 | |
| 311 void bang_stack_shadow_pages(bool native_call); | |
| 312 | |
| 313 void generate_all(); | |
| 314 | |
| 315 public: | |
| 316 AbstractInterpreterGenerator(StubQueue* _code); | |
| 317 }; |