Mercurial > hg > truffle
annotate src/share/vm/code/codeBlob.hpp @ 1681:126ea7725993
6953477: Increase portability and flexibility of building Hotspot
Summary: A collection of portability improvements including shared code support for PPC, ARM platforms, software floating point, cross compilation support and improvements in error crash detail.
Reviewed-by: phh, never, coleenp, dholmes
| author | bobv |
|---|---|
| date | Tue, 03 Aug 2010 08:13:38 -0400 |
| parents | 7139e81efd2d |
| children | 3e8fbc61cee8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1299
diff
changeset
|
2 * Copyright (c) 1998, 2010, 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1299
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1299
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1299
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 // CodeBlob - superclass for all entries in the CodeCache. | |
| 26 // | |
| 27 // Suptypes are: | |
| 28 // nmethod : Compiled Java methods (include method that calls to native code) | |
| 29 // RuntimeStub : Call to VM runtime methods | |
| 30 // DeoptimizationBlob : Used for deoptimizatation | |
| 31 // ExceptionBlob : Used for stack unrolling | |
| 32 // SafepointBlob : Used to handle illegal instruction exceptions | |
| 33 // | |
| 34 // | |
| 35 // Layout: | |
| 36 // - header | |
| 37 // - relocation | |
| 38 // - instruction space | |
| 39 // - data space | |
| 40 class DeoptimizationBlob; | |
| 41 | |
| 42 class CodeBlob VALUE_OBJ_CLASS_SPEC { | |
| 43 | |
| 44 friend class VMStructs; | |
| 45 | |
| 46 private: | |
| 47 const char* _name; | |
| 48 int _size; // total size of CodeBlob in bytes | |
| 49 int _header_size; // size of header (depends on subclass) | |
| 50 int _relocation_size; // size of relocation | |
| 51 int _instructions_offset; // offset to where instructions region begins | |
| 52 int _frame_complete_offset; // instruction offsets in [0.._frame_complete_offset) have | |
| 53 // not finished setting up their frame. Beware of pc's in | |
| 54 // that range. There is a similar range(s) on returns | |
| 55 // which we don't detect. | |
| 56 int _data_offset; // offset to where data region begins | |
| 57 int _frame_size; // size of stack frame | |
| 58 OopMapSet* _oop_maps; // OopMap for this CodeBlob | |
| 59 CodeComments _comments; | |
| 60 | |
| 61 friend class OopRecorder; | |
| 62 | |
| 63 public: | |
| 64 // Returns the space needed for CodeBlob | |
| 65 static unsigned int allocation_size(CodeBuffer* cb, int header_size); | |
| 66 | |
| 67 // Creation | |
| 68 // a) simple CodeBlob | |
| 69 // frame_complete is the offset from the beginning of the instructions | |
| 70 // to where the frame setup (from stackwalk viewpoint) is complete. | |
| 71 CodeBlob(const char* name, int header_size, int size, int frame_complete, int locs_size); | |
| 72 | |
| 73 // b) full CodeBlob | |
| 74 CodeBlob( | |
| 75 const char* name, | |
| 76 CodeBuffer* cb, | |
| 77 int header_size, | |
| 78 int size, | |
| 79 int frame_complete, | |
| 80 int frame_size, | |
| 81 OopMapSet* oop_maps | |
| 82 ); | |
| 83 | |
| 84 // Deletion | |
| 85 void flush(); | |
| 86 | |
| 87 // Typing | |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
88 virtual bool is_buffer_blob() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
89 virtual bool is_nmethod() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
90 virtual bool is_runtime_stub() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
91 virtual bool is_deoptimization_stub() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
92 virtual bool is_uncommon_trap_stub() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
93 virtual bool is_exception_stub() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
94 virtual bool is_safepoint_stub() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
95 virtual bool is_adapter_blob() const { return false; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
96 virtual bool is_method_handles_adapter_blob() const { return false; } |
| 0 | 97 |
| 98 virtual bool is_compiled_by_c2() const { return false; } | |
| 99 virtual bool is_compiled_by_c1() const { return false; } | |
| 100 | |
|
1135
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
989
diff
changeset
|
101 // Casting |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
989
diff
changeset
|
102 nmethod* as_nmethod_or_null() { return is_nmethod() ? (nmethod*) this : NULL; } |
|
e66fd840cb6b
6893081: method handle & invokedynamic code needs additional cleanup (post 6815692, 6858164)
twisti
parents:
989
diff
changeset
|
103 |
| 0 | 104 // Boundaries |
| 105 address header_begin() const { return (address) this; } | |
| 106 address header_end() const { return ((address) this) + _header_size; }; | |
| 107 relocInfo* relocation_begin() const { return (relocInfo*) header_end(); }; | |
| 108 relocInfo* relocation_end() const { return (relocInfo*)(header_end() + _relocation_size); } | |
| 109 address instructions_begin() const { return (address) header_begin() + _instructions_offset; } | |
| 110 address instructions_end() const { return (address) header_begin() + _data_offset; } | |
| 111 address data_begin() const { return (address) header_begin() + _data_offset; } | |
| 112 address data_end() const { return (address) header_begin() + _size; } | |
| 113 | |
| 114 // Offsets | |
| 115 int relocation_offset() const { return _header_size; } | |
| 116 int instructions_offset() const { return _instructions_offset; } | |
| 117 int data_offset() const { return _data_offset; } | |
| 118 | |
| 119 // Sizes | |
| 120 int size() const { return _size; } | |
| 121 int header_size() const { return _header_size; } | |
| 122 int relocation_size() const { return (address) relocation_end() - (address) relocation_begin(); } | |
| 123 int instructions_size() const { return instructions_end() - instructions_begin(); } | |
| 124 int data_size() const { return data_end() - data_begin(); } | |
| 125 | |
| 126 // Containment | |
| 127 bool blob_contains(address addr) const { return header_begin() <= addr && addr < data_end(); } | |
| 128 bool relocation_contains(relocInfo* addr) const{ return relocation_begin() <= addr && addr < relocation_end(); } | |
| 129 bool instructions_contains(address addr) const { return instructions_begin() <= addr && addr < instructions_end(); } | |
| 130 bool data_contains(address addr) const { return data_begin() <= addr && addr < data_end(); } | |
| 131 bool contains(address addr) const { return instructions_contains(addr); } | |
| 132 bool is_frame_complete_at(address addr) const { return instructions_contains(addr) && | |
| 133 addr >= instructions_begin() + _frame_complete_offset; } | |
| 134 | |
| 135 // CodeCache support: really only used by the nmethods, but in order to get | |
| 136 // asserts and certain bookkeeping to work in the CodeCache they are defined | |
| 137 // virtual here. | |
| 138 virtual bool is_zombie() const { return false; } | |
| 139 virtual bool is_locked_by_vm() const { return false; } | |
| 140 | |
| 141 virtual bool is_unloaded() const { return false; } | |
| 142 virtual bool is_not_entrant() const { return false; } | |
| 143 | |
| 144 // GC support | |
| 145 virtual bool is_alive() const = 0; | |
| 146 | |
| 147 // OopMap for frame | |
| 148 OopMapSet* oop_maps() const { return _oop_maps; } | |
| 149 void set_oop_maps(OopMapSet* p); | |
| 150 OopMap* oop_map_for_return_address(address return_address); | |
| 151 virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { ShouldNotReachHere(); } | |
| 152 | |
| 153 // Frame support | |
| 154 int frame_size() const { return _frame_size; } | |
| 155 void set_frame_size(int size) { _frame_size = size; } | |
| 156 | |
| 157 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
| 158 virtual bool caller_must_gc_arguments(JavaThread* thread) const { return false; } | |
| 159 | |
| 160 // Naming | |
| 161 const char* name() const { return _name; } | |
| 162 void set_name(const char* name) { _name = name; } | |
| 163 | |
| 164 // Debugging | |
| 165 virtual void verify(); | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
166 void print() const { print_on(tty); } |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
167 virtual void print_on(outputStream* st) const; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
168 virtual void print_value_on(outputStream* st) const; |
| 0 | 169 |
| 170 // Print the comment associated with offset on stream, if there is one | |
|
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1135
diff
changeset
|
171 virtual void print_block_comment(outputStream* stream, address block_begin) { |
|
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
1135
diff
changeset
|
172 intptr_t offset = (intptr_t)(block_begin - instructions_begin()); |
| 0 | 173 _comments.print_block_comment(stream, offset); |
| 174 } | |
| 175 | |
| 176 // Transfer ownership of comments to this CodeBlob | |
| 177 void set_comments(CodeComments& comments) { | |
| 178 _comments.assign(comments); | |
| 179 } | |
| 180 }; | |
| 181 | |
| 182 | |
| 183 //---------------------------------------------------------------------------------------------------- | |
| 184 // BufferBlob: used to hold non-relocatable machine code such as the interpreter, stubroutines, etc. | |
| 185 | |
| 186 class BufferBlob: public CodeBlob { | |
| 187 friend class VMStructs; | |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
188 friend class AdapterBlob; |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
189 friend class MethodHandlesAdapterBlob; |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
190 |
| 0 | 191 private: |
| 192 // Creation support | |
| 193 BufferBlob(const char* name, int size); | |
| 194 BufferBlob(const char* name, int size, CodeBuffer* cb); | |
| 195 | |
| 196 void* operator new(size_t s, unsigned size); | |
| 197 | |
| 198 public: | |
| 199 // Creation | |
| 200 static BufferBlob* create(const char* name, int buffer_size); | |
| 201 static BufferBlob* create(const char* name, CodeBuffer* cb); | |
| 202 | |
| 203 static void free(BufferBlob* buf); | |
| 204 | |
| 205 // Typing | |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
206 virtual bool is_buffer_blob() const { return true; } |
| 0 | 207 |
| 208 // GC/Verification support | |
| 209 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 210 bool is_alive() const { return true; } | |
| 211 | |
| 212 void verify(); | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
213 void print_on(outputStream* st) const; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
214 void print_value_on(outputStream* st) const; |
| 0 | 215 }; |
| 216 | |
| 217 | |
| 218 //---------------------------------------------------------------------------------------------------- | |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
219 // AdapterBlob: used to hold C2I/I2C adapters |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
220 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
221 class AdapterBlob: public BufferBlob { |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
222 private: |
| 1663 | 223 AdapterBlob(int size, CodeBuffer* cb); |
|
1299
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
224 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
225 public: |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
226 // Creation |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
227 static AdapterBlob* create(CodeBuffer* cb); |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
228 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
229 // Typing |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
230 virtual bool is_adapter_blob() const { return true; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
231 }; |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
232 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
233 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
234 //---------------------------------------------------------------------------------------------------- |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
235 // MethodHandlesAdapterBlob: used to hold MethodHandles adapters |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
236 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
237 class MethodHandlesAdapterBlob: public BufferBlob { |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
238 private: |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
239 MethodHandlesAdapterBlob(int size) : BufferBlob("MethodHandles adapters", size) {} |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
240 MethodHandlesAdapterBlob(int size, CodeBuffer* cb) : BufferBlob("MethodHandles adapters", size, cb) {} |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
241 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
242 public: |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
243 // Creation |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
244 static MethodHandlesAdapterBlob* create(int buffer_size); |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
245 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
246 // Typing |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
247 virtual bool is_method_handles_adapter_blob() const { return true; } |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
248 }; |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
249 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
250 |
|
9eba43136cb5
6934494: JSR 292 MethodHandles adapters should be generated into their own CodeBlob
twisti
parents:
1155
diff
changeset
|
251 //---------------------------------------------------------------------------------------------------- |
| 0 | 252 // RuntimeStub: describes stubs used by compiled code to call a (static) C++ runtime routine |
| 253 | |
| 254 class RuntimeStub: public CodeBlob { | |
| 255 friend class VMStructs; | |
| 256 private: | |
| 257 bool _caller_must_gc_arguments; | |
| 258 | |
| 259 // Creation support | |
| 260 RuntimeStub( | |
| 261 const char* name, | |
| 262 CodeBuffer* cb, | |
| 263 int size, | |
| 264 int frame_complete, | |
| 265 int frame_size, | |
| 266 OopMapSet* oop_maps, | |
| 267 bool caller_must_gc_arguments | |
| 268 ); | |
| 269 | |
| 270 void* operator new(size_t s, unsigned size); | |
| 271 | |
| 272 public: | |
| 273 // Creation | |
| 274 static RuntimeStub* new_runtime_stub( | |
| 275 const char* stub_name, | |
| 276 CodeBuffer* cb, | |
| 277 int frame_complete, | |
| 278 int frame_size, | |
| 279 OopMapSet* oop_maps, | |
| 280 bool caller_must_gc_arguments | |
| 281 ); | |
| 282 | |
| 283 // Typing | |
| 284 bool is_runtime_stub() const { return true; } | |
| 285 | |
| 286 // GC support | |
| 287 bool caller_must_gc_arguments(JavaThread* thread) const { return _caller_must_gc_arguments; } | |
| 288 | |
| 289 address entry_point() { return instructions_begin(); } | |
| 290 | |
| 291 // GC/Verification support | |
| 292 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 293 bool is_alive() const { return true; } | |
| 294 | |
| 295 void verify(); | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
296 void print_on(outputStream* st) const; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
297 void print_value_on(outputStream* st) const; |
| 0 | 298 }; |
| 299 | |
| 300 | |
| 301 //---------------------------------------------------------------------------------------------------- | |
| 302 // Super-class for all blobs that exist in only one instance. Implements default behaviour. | |
| 303 | |
| 304 class SingletonBlob: public CodeBlob { | |
| 305 friend class VMStructs; | |
| 306 public: | |
| 307 SingletonBlob( | |
| 308 const char* name, | |
| 309 CodeBuffer* cb, | |
| 310 int header_size, | |
| 311 int size, | |
| 312 int frame_size, | |
| 313 OopMapSet* oop_maps | |
| 314 ) | |
| 315 : CodeBlob(name, cb, header_size, size, CodeOffsets::frame_never_safe, frame_size, oop_maps) | |
| 316 {}; | |
| 317 | |
| 318 bool is_alive() const { return true; } | |
| 319 | |
| 320 void verify(); // does nothing | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
321 void print_on(outputStream* st) const; |
|
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
322 void print_value_on(outputStream* st) const; |
| 0 | 323 }; |
| 324 | |
| 325 | |
| 326 //---------------------------------------------------------------------------------------------------- | |
| 327 // DeoptimizationBlob | |
| 328 | |
| 329 class DeoptimizationBlob: public SingletonBlob { | |
| 330 friend class VMStructs; | |
| 331 private: | |
| 332 int _unpack_offset; | |
| 333 int _unpack_with_exception; | |
| 334 int _unpack_with_reexecution; | |
| 335 | |
| 336 int _unpack_with_exception_in_tls; | |
| 337 | |
| 338 // Creation support | |
| 339 DeoptimizationBlob( | |
| 340 CodeBuffer* cb, | |
| 341 int size, | |
| 342 OopMapSet* oop_maps, | |
| 343 int unpack_offset, | |
| 344 int unpack_with_exception_offset, | |
| 345 int unpack_with_reexecution_offset, | |
| 346 int frame_size | |
| 347 ); | |
| 348 | |
| 349 void* operator new(size_t s, unsigned size); | |
| 350 | |
| 351 public: | |
| 352 // Creation | |
| 353 static DeoptimizationBlob* create( | |
| 354 CodeBuffer* cb, | |
| 355 OopMapSet* oop_maps, | |
| 356 int unpack_offset, | |
| 357 int unpack_with_exception_offset, | |
| 358 int unpack_with_reexecution_offset, | |
| 359 int frame_size | |
| 360 ); | |
| 361 | |
| 362 // Typing | |
| 363 bool is_deoptimization_stub() const { return true; } | |
| 364 const DeoptimizationBlob *as_deoptimization_stub() const { return this; } | |
| 365 bool exception_address_is_unpack_entry(address pc) const { | |
| 366 address unpack_pc = unpack(); | |
| 367 return (pc == unpack_pc || (pc + frame::pc_return_offset) == unpack_pc); | |
| 368 } | |
| 369 | |
| 370 | |
| 371 | |
| 372 | |
| 373 // GC for args | |
| 374 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* Nothing to do */ } | |
| 375 | |
| 376 // Printing | |
|
1681
126ea7725993
6953477: Increase portability and flexibility of building Hotspot
bobv
parents:
1663
diff
changeset
|
377 void print_value_on(outputStream* st) const; |
| 0 | 378 |
| 379 address unpack() const { return instructions_begin() + _unpack_offset; } | |
| 380 address unpack_with_exception() const { return instructions_begin() + _unpack_with_exception; } | |
| 381 address unpack_with_reexecution() const { return instructions_begin() + _unpack_with_reexecution; } | |
| 382 | |
| 383 // Alternate entry point for C1 where the exception and issuing pc | |
| 384 // are in JavaThread::_exception_oop and JavaThread::_exception_pc | |
| 385 // instead of being in registers. This is needed because C1 doesn't | |
| 386 // model exception paths in a way that keeps these registers free so | |
| 387 // there may be live values in those registers during deopt. | |
| 388 void set_unpack_with_exception_in_tls_offset(int offset) { | |
| 389 _unpack_with_exception_in_tls = offset; | |
| 390 assert(contains(instructions_begin() + _unpack_with_exception_in_tls), "must be PC inside codeblob"); | |
| 391 } | |
| 392 address unpack_with_exception_in_tls() const { return instructions_begin() + _unpack_with_exception_in_tls; } | |
| 393 }; | |
| 394 | |
| 395 | |
| 396 //---------------------------------------------------------------------------------------------------- | |
| 397 // UncommonTrapBlob (currently only used by Compiler 2) | |
| 398 | |
| 399 #ifdef COMPILER2 | |
| 400 | |
| 401 class UncommonTrapBlob: public SingletonBlob { | |
| 402 friend class VMStructs; | |
| 403 private: | |
| 404 // Creation support | |
| 405 UncommonTrapBlob( | |
| 406 CodeBuffer* cb, | |
| 407 int size, | |
| 408 OopMapSet* oop_maps, | |
| 409 int frame_size | |
| 410 ); | |
| 411 | |
| 412 void* operator new(size_t s, unsigned size); | |
| 413 | |
| 414 public: | |
| 415 // Creation | |
| 416 static UncommonTrapBlob* create( | |
| 417 CodeBuffer* cb, | |
| 418 OopMapSet* oop_maps, | |
| 419 int frame_size | |
| 420 ); | |
| 421 | |
| 422 // GC for args | |
| 423 void preserve_callee_argument_oops(frame fr, const RegisterMap *reg_map, OopClosure* f) { /* nothing to do */ } | |
| 424 | |
| 425 // Typing | |
| 426 bool is_uncommon_trap_stub() const { return true; } | |
| 427 }; | |
| 428 | |
| 429 | |
| 430 //---------------------------------------------------------------------------------------------------- | |
| 431 // ExceptionBlob: used for exception unwinding in compiled code (currently only used by Compiler 2) | |
| 432 | |
| 433 class ExceptionBlob: public SingletonBlob { | |
| 434 friend class VMStructs; | |
| 435 private: | |
| 436 // Creation support | |
| 437 ExceptionBlob( | |
| 438 CodeBuffer* cb, | |
| 439 int size, | |
| 440 OopMapSet* oop_maps, | |
| 441 int frame_size | |
| 442 ); | |
| 443 | |
| 444 void* operator new(size_t s, unsigned size); | |
| 445 | |
| 446 public: | |
| 447 // Creation | |
| 448 static ExceptionBlob* create( | |
| 449 CodeBuffer* cb, | |
| 450 OopMapSet* oop_maps, | |
| 451 int frame_size | |
| 452 ); | |
| 453 | |
| 454 // GC for args | |
| 455 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 456 | |
| 457 // Typing | |
| 458 bool is_exception_stub() const { return true; } | |
| 459 }; | |
| 460 #endif // COMPILER2 | |
| 461 | |
| 462 | |
| 463 //---------------------------------------------------------------------------------------------------- | |
| 464 // SafepointBlob: handles illegal_instruction exceptions during a safepoint | |
| 465 | |
| 466 class SafepointBlob: public SingletonBlob { | |
| 467 friend class VMStructs; | |
| 468 private: | |
| 469 // Creation support | |
| 470 SafepointBlob( | |
| 471 CodeBuffer* cb, | |
| 472 int size, | |
| 473 OopMapSet* oop_maps, | |
| 474 int frame_size | |
| 475 ); | |
| 476 | |
| 477 void* operator new(size_t s, unsigned size); | |
| 478 | |
| 479 public: | |
| 480 // Creation | |
| 481 static SafepointBlob* create( | |
| 482 CodeBuffer* cb, | |
| 483 OopMapSet* oop_maps, | |
| 484 int frame_size | |
| 485 ); | |
| 486 | |
| 487 // GC for args | |
| 488 void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, OopClosure* f) { /* nothing to do */ } | |
| 489 | |
| 490 // Typing | |
| 491 bool is_safepoint_stub() const { return true; } | |
| 492 }; |