Mercurial > hg > truffle
annotate src/share/vm/interpreter/bytecode.hpp @ 1748:3e8fbc61cee8
6978355: renaming for 6961697
Summary: This is the renaming part of 6961697 to keep the actual changes small for review.
Reviewed-by: kvn, never
| author | twisti |
|---|---|
| date | Wed, 25 Aug 2010 05:27:54 -0700 |
| parents | 136b78722a08 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1579 | 2 * Copyright (c) 1997, 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 * | |
|
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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 | |
| 25 // Base class for different kinds of abstractions working | |
| 26 // relative to an objects 'this' pointer. | |
| 27 | |
| 28 class ThisRelativeObj VALUE_OBJ_CLASS_SPEC { | |
| 29 public: | |
| 30 // Address computation | |
| 31 address addr_at (int offset) const { return (address)this + offset; } | |
| 1565 | 32 int byte_at (int offset) const { return *(addr_at(offset)); } |
| 0 | 33 address aligned_addr_at (int offset) const { return (address)round_to((intptr_t)addr_at(offset), jintSize); } |
| 34 int aligned_offset (int offset) const { return aligned_addr_at(offset) - addr_at(0); } | |
| 35 | |
| 1565 | 36 // Word access: |
| 37 int get_Java_u2_at (int offset) const { return Bytes::get_Java_u2(addr_at(offset)); } | |
| 38 int get_Java_u4_at (int offset) const { return Bytes::get_Java_u4(addr_at(offset)); } | |
| 39 int get_native_u2_at (int offset) const { return Bytes::get_native_u2(addr_at(offset)); } | |
| 40 int get_native_u4_at (int offset) const { return Bytes::get_native_u4(addr_at(offset)); } | |
| 0 | 41 }; |
| 42 | |
| 43 | |
| 44 // The base class for different kinds of bytecode abstractions. | |
| 45 // Provides the primitive operations to manipulate code relative | |
| 46 // to an objects 'this' pointer. | |
| 1565 | 47 // FIXME: Make this a ResourceObj, include the enclosing methodOop, and cache the opcode. |
| 0 | 48 |
| 49 class Bytecode: public ThisRelativeObj { | |
| 50 protected: | |
| 51 u_char byte_at(int offset) const { return *addr_at(offset); } | |
| 1565 | 52 bool check_must_rewrite(Bytecodes::Code bc) const; |
| 0 | 53 |
| 54 public: | |
| 55 // Attributes | |
| 56 address bcp() const { return addr_at(0); } | |
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57 int instruction_size() const { return Bytecodes::length_at(bcp()); } |
| 0 | 58 |
| 1565 | 59 // Warning: Use code() with caution on live bytecode streams. 4926272 |
| 0 | 60 Bytecodes::Code code() const { return Bytecodes::code_at(addr_at(0)); } |
| 61 Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); } | |
| 1565 | 62 bool must_rewrite(Bytecodes::Code code) const { return Bytecodes::can_rewrite(code) && check_must_rewrite(code); } |
| 0 | 63 |
| 64 // Creation | |
| 65 inline friend Bytecode* Bytecode_at(address bcp); | |
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66 |
| 1565 | 67 // Static functions for parsing bytecodes in place. |
| 68 int get_index_u1(Bytecodes::Code bc) const { | |
| 69 assert_same_format_as(bc); assert_index_size(1, bc); | |
| 70 return *(jubyte*)addr_at(1); | |
| 71 } | |
| 72 int get_index_u2(Bytecodes::Code bc, bool is_wide = false) const { | |
| 73 assert_same_format_as(bc, is_wide); assert_index_size(2, bc, is_wide); | |
| 74 address p = addr_at(is_wide ? 2 : 1); | |
| 75 if (can_use_native_byte_order(bc, is_wide)) | |
| 76 return Bytes::get_native_u2(p); | |
| 77 else return Bytes::get_Java_u2(p); | |
| 78 } | |
| 1602 | 79 int get_index_u1_cpcache(Bytecodes::Code bc) const { |
| 80 assert_same_format_as(bc); assert_index_size(1, bc); | |
| 81 return *(jubyte*)addr_at(1) + constantPoolOopDesc::CPCACHE_INDEX_TAG; | |
| 82 } | |
| 1565 | 83 int get_index_u2_cpcache(Bytecodes::Code bc) const { |
| 84 assert_same_format_as(bc); assert_index_size(2, bc); assert_native_index(bc); | |
| 1602 | 85 return Bytes::get_native_u2(addr_at(1)) + constantPoolOopDesc::CPCACHE_INDEX_TAG; |
| 1565 | 86 } |
| 87 int get_index_u4(Bytecodes::Code bc) const { | |
| 88 assert_same_format_as(bc); assert_index_size(4, bc); | |
| 89 assert(can_use_native_byte_order(bc), ""); | |
| 90 return Bytes::get_native_u4(addr_at(1)); | |
| 91 } | |
| 92 bool has_index_u4(Bytecodes::Code bc) const { | |
| 93 return bc == Bytecodes::_invokedynamic; | |
| 94 } | |
| 95 | |
| 96 int get_offset_s2(Bytecodes::Code bc) const { | |
| 97 assert_same_format_as(bc); assert_offset_size(2, bc); | |
| 98 return (jshort) Bytes::get_Java_u2(addr_at(1)); | |
| 99 } | |
| 100 int get_offset_s4(Bytecodes::Code bc) const { | |
| 101 assert_same_format_as(bc); assert_offset_size(4, bc); | |
| 102 return (jint) Bytes::get_Java_u4(addr_at(1)); | |
| 103 } | |
| 104 | |
| 105 int get_constant_u1(int offset, Bytecodes::Code bc) const { | |
| 106 assert_same_format_as(bc); assert_constant_size(1, offset, bc); | |
| 107 return *(jbyte*)addr_at(offset); | |
| 108 } | |
| 109 int get_constant_u2(int offset, Bytecodes::Code bc, bool is_wide = false) const { | |
| 110 assert_same_format_as(bc, is_wide); assert_constant_size(2, offset, bc, is_wide); | |
| 111 return (jshort) Bytes::get_Java_u2(addr_at(offset)); | |
| 112 } | |
| 113 | |
| 114 // These are used locally and also from bytecode streams. | |
| 115 void assert_same_format_as(Bytecodes::Code testbc, bool is_wide = false) const NOT_DEBUG_RETURN; | |
| 116 static void assert_index_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 117 static void assert_offset_size(int required_size, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 118 static void assert_constant_size(int required_size, int where, Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 119 static void assert_native_index(Bytecodes::Code bc, bool is_wide = false) NOT_DEBUG_RETURN; | |
| 120 static bool can_use_native_byte_order(Bytecodes::Code bc, bool is_wide = false) { | |
| 121 return (!Bytes::is_Java_byte_ordering_different() || Bytecodes::native_byte_order(bc /*, is_wide*/)); | |
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122 } |
| 0 | 123 }; |
| 124 | |
| 125 inline Bytecode* Bytecode_at(address bcp) { | |
| 1565 | 126 // Warning: Use with caution on live bytecode streams. 4926272 |
| 0 | 127 return (Bytecode*)bcp; |
| 128 } | |
| 129 | |
| 130 | |
| 131 // Abstractions for lookupswitch bytecode | |
| 132 | |
| 133 class LookupswitchPair: ThisRelativeObj { | |
| 134 private: | |
| 135 int _match; | |
| 136 int _offset; | |
| 137 | |
| 138 public: | |
| 1565 | 139 int match() const { return get_Java_u4_at(0 * jintSize); } |
| 140 int offset() const { return get_Java_u4_at(1 * jintSize); } | |
| 0 | 141 }; |
| 142 | |
| 143 | |
| 144 class Bytecode_lookupswitch: public Bytecode { | |
| 145 public: | |
| 146 void verify() const PRODUCT_RETURN; | |
| 147 | |
| 148 // Attributes | |
| 1565 | 149 int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } |
| 150 int number_of_pairs() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } | |
| 0 | 151 LookupswitchPair* pair_at(int i) const { assert(0 <= i && i < number_of_pairs(), "pair index out of bounds"); |
| 152 return (LookupswitchPair*)aligned_addr_at(1 + (1 + i)*2*jintSize); } | |
| 153 // Creation | |
| 154 inline friend Bytecode_lookupswitch* Bytecode_lookupswitch_at(address bcp); | |
| 155 }; | |
| 156 | |
| 157 inline Bytecode_lookupswitch* Bytecode_lookupswitch_at(address bcp) { | |
| 158 Bytecode_lookupswitch* b = (Bytecode_lookupswitch*)bcp; | |
| 1602 | 159 DEBUG_ONLY(b->verify()); |
| 0 | 160 return b; |
| 161 } | |
| 162 | |
| 163 | |
| 164 class Bytecode_tableswitch: public Bytecode { | |
| 165 public: | |
| 166 void verify() const PRODUCT_RETURN; | |
| 167 | |
| 168 // Attributes | |
| 1565 | 169 int default_offset() const { return get_Java_u4_at(aligned_offset(1 + 0*jintSize)); } |
| 170 int low_key() const { return get_Java_u4_at(aligned_offset(1 + 1*jintSize)); } | |
| 171 int high_key() const { return get_Java_u4_at(aligned_offset(1 + 2*jintSize)); } | |
| 0 | 172 int dest_offset_at(int i) const; |
| 173 int length() { return high_key()-low_key()+1; } | |
| 174 | |
| 175 // Creation | |
| 176 inline friend Bytecode_tableswitch* Bytecode_tableswitch_at(address bcp); | |
| 177 }; | |
| 178 | |
| 179 inline Bytecode_tableswitch* Bytecode_tableswitch_at(address bcp) { | |
| 180 Bytecode_tableswitch* b = (Bytecode_tableswitch*)bcp; | |
| 1602 | 181 DEBUG_ONLY(b->verify()); |
| 0 | 182 return b; |
| 183 } | |
| 184 | |
| 185 | |
| 1602 | 186 // Common code for decoding invokes and field references. |
| 0 | 187 |
| 1602 | 188 class Bytecode_member_ref: public ResourceObj { |
| 0 | 189 protected: |
| 190 methodHandle _method; // method containing the bytecode | |
| 191 int _bci; // position of the bytecode | |
| 192 | |
| 1602 | 193 Bytecode_member_ref(methodHandle method, int bci) : _method(method), _bci(bci) {} |
| 194 | |
| 195 public: | |
| 196 // Attributes | |
| 197 methodHandle method() const { return _method; } | |
| 198 int bci() const { return _bci; } | |
| 199 address bcp() const { return _method->bcp_from(bci()); } | |
| 200 Bytecode* bytecode() const { return Bytecode_at(bcp()); } | |
| 201 | |
| 202 int index() const; // cache index (loaded from instruction) | |
| 203 int pool_index() const; // constant pool index | |
| 204 symbolOop name() const; // returns the name of the method or field | |
| 205 symbolOop signature() const; // returns the signature of the method or field | |
| 206 | |
| 207 BasicType result_type(Thread* thread) const; // returns the result type of the getfield or invoke | |
| 208 | |
| 209 Bytecodes::Code code() const { return Bytecodes::code_at(bcp(), _method()); } | |
| 210 Bytecodes::Code java_code() const { return Bytecodes::java_code(code()); } | |
| 211 }; | |
| 212 | |
| 213 // Abstraction for invoke_{virtual, static, interface, special} | |
| 214 | |
| 215 class Bytecode_invoke: public Bytecode_member_ref { | |
| 216 protected: | |
| 217 Bytecode_invoke(methodHandle method, int bci) : Bytecode_member_ref(method, bci) {} | |
| 0 | 218 |
| 219 public: | |
| 220 void verify() const; | |
| 221 | |
| 222 // Attributes | |
| 223 methodHandle static_target(TRAPS); // "specified" method (from constant pool) | |
| 224 | |
| 225 // Testers | |
| 1602 | 226 bool is_invokeinterface() const { return java_code() == Bytecodes::_invokeinterface; } |
| 227 bool is_invokevirtual() const { return java_code() == Bytecodes::_invokevirtual; } | |
| 228 bool is_invokestatic() const { return java_code() == Bytecodes::_invokestatic; } | |
| 229 bool is_invokespecial() const { return java_code() == Bytecodes::_invokespecial; } | |
| 230 bool is_invokedynamic() const { return java_code() == Bytecodes::_invokedynamic; } | |
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231 |
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232 bool has_receiver() const { return !is_invokestatic() && !is_invokedynamic(); } |
| 0 | 233 |
| 234 bool is_valid() const { return is_invokeinterface() || | |
| 235 is_invokevirtual() || | |
| 236 is_invokestatic() || | |
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237 is_invokespecial() || |
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238 is_invokedynamic(); } |
| 0 | 239 |
| 240 // Creation | |
| 241 inline friend Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci); | |
| 242 | |
| 243 // Like Bytecode_invoke_at. Instead it returns NULL if the bci is not at an invoke. | |
| 244 inline friend Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci); | |
| 245 }; | |
| 246 | |
| 247 inline Bytecode_invoke* Bytecode_invoke_at(methodHandle method, int bci) { | |
| 248 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
| 1602 | 249 DEBUG_ONLY(b->verify()); |
| 0 | 250 return b; |
| 251 } | |
| 252 | |
| 253 inline Bytecode_invoke* Bytecode_invoke_at_check(methodHandle method, int bci) { | |
| 254 Bytecode_invoke* b = new Bytecode_invoke(method, bci); | |
| 255 return b->is_valid() ? b : NULL; | |
| 256 } | |
| 257 | |
| 258 | |
| 1602 | 259 // Abstraction for all field accesses (put/get field/static) |
| 260 class Bytecode_field: public Bytecode_member_ref { | |
| 261 protected: | |
| 262 Bytecode_field(methodHandle method, int bci) : Bytecode_member_ref(method, bci) {} | |
| 263 | |
| 264 public: | |
| 265 // Testers | |
| 266 bool is_getfield() const { return java_code() == Bytecodes::_getfield; } | |
| 267 bool is_putfield() const { return java_code() == Bytecodes::_putfield; } | |
| 268 bool is_getstatic() const { return java_code() == Bytecodes::_getstatic; } | |
| 269 bool is_putstatic() const { return java_code() == Bytecodes::_putstatic; } | |
| 270 | |
| 271 bool is_getter() const { return is_getfield() || is_getstatic(); } | |
| 272 bool is_static() const { return is_getstatic() || is_putstatic(); } | |
| 273 | |
| 274 bool is_valid() const { return is_getfield() || | |
| 275 is_putfield() || | |
| 276 is_getstatic() || | |
| 277 is_putstatic(); } | |
| 0 | 278 void verify() const; |
| 279 | |
| 280 // Creation | |
| 1602 | 281 inline friend Bytecode_field* Bytecode_field_at(methodHandle method, int bci); |
| 0 | 282 }; |
| 283 | |
| 1602 | 284 inline Bytecode_field* Bytecode_field_at(methodHandle method, int bci) { |
| 285 Bytecode_field* b = new Bytecode_field(method, bci); | |
| 286 DEBUG_ONLY(b->verify()); | |
| 0 | 287 return b; |
| 288 } | |
| 289 | |
| 290 | |
| 291 // Abstraction for checkcast | |
| 292 | |
| 293 class Bytecode_checkcast: public Bytecode { | |
| 294 public: | |
| 295 void verify() const { assert(Bytecodes::java_code(code()) == Bytecodes::_checkcast, "check checkcast"); } | |
| 296 | |
| 297 // Returns index | |
| 1565 | 298 long index() const { return get_index_u2(Bytecodes::_checkcast); }; |
| 0 | 299 |
| 300 // Creation | |
| 301 inline friend Bytecode_checkcast* Bytecode_checkcast_at(address bcp); | |
| 302 }; | |
| 303 | |
| 304 inline Bytecode_checkcast* Bytecode_checkcast_at(address bcp) { | |
| 305 Bytecode_checkcast* b = (Bytecode_checkcast*)bcp; | |
| 1602 | 306 DEBUG_ONLY(b->verify()); |
| 0 | 307 return b; |
| 308 } | |
| 309 | |
| 310 | |
| 311 // Abstraction for instanceof | |
| 312 | |
| 313 class Bytecode_instanceof: public Bytecode { | |
| 314 public: | |
| 315 void verify() const { assert(code() == Bytecodes::_instanceof, "check instanceof"); } | |
| 316 | |
| 317 // Returns index | |
| 1565 | 318 long index() const { return get_index_u2(Bytecodes::_instanceof); }; |
| 0 | 319 |
| 320 // Creation | |
| 321 inline friend Bytecode_instanceof* Bytecode_instanceof_at(address bcp); | |
| 322 }; | |
| 323 | |
| 324 inline Bytecode_instanceof* Bytecode_instanceof_at(address bcp) { | |
| 325 Bytecode_instanceof* b = (Bytecode_instanceof*)bcp; | |
| 1602 | 326 DEBUG_ONLY(b->verify()); |
| 0 | 327 return b; |
| 328 } | |
| 329 | |
| 330 | |
| 331 class Bytecode_new: public Bytecode { | |
| 332 public: | |
| 333 void verify() const { assert(java_code() == Bytecodes::_new, "check new"); } | |
| 334 | |
| 335 // Returns index | |
| 1565 | 336 long index() const { return get_index_u2(Bytecodes::_new); }; |
| 0 | 337 |
| 338 // Creation | |
| 339 inline friend Bytecode_new* Bytecode_new_at(address bcp); | |
| 340 }; | |
| 341 | |
| 342 inline Bytecode_new* Bytecode_new_at(address bcp) { | |
| 343 Bytecode_new* b = (Bytecode_new*)bcp; | |
| 1602 | 344 DEBUG_ONLY(b->verify()); |
| 0 | 345 return b; |
| 346 } | |
| 347 | |
| 348 | |
| 349 class Bytecode_multianewarray: public Bytecode { | |
| 350 public: | |
| 351 void verify() const { assert(java_code() == Bytecodes::_multianewarray, "check new"); } | |
| 352 | |
| 353 // Returns index | |
| 1565 | 354 long index() const { return get_index_u2(Bytecodes::_multianewarray); }; |
| 0 | 355 |
| 356 // Creation | |
| 357 inline friend Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp); | |
| 358 }; | |
| 359 | |
| 360 inline Bytecode_multianewarray* Bytecode_multianewarray_at(address bcp) { | |
| 361 Bytecode_multianewarray* b = (Bytecode_multianewarray*)bcp; | |
| 1602 | 362 DEBUG_ONLY(b->verify()); |
| 0 | 363 return b; |
| 364 } | |
| 365 | |
| 366 | |
| 367 class Bytecode_anewarray: public Bytecode { | |
| 368 public: | |
| 369 void verify() const { assert(java_code() == Bytecodes::_anewarray, "check anewarray"); } | |
| 370 | |
| 371 // Returns index | |
| 1565 | 372 long index() const { return get_index_u2(Bytecodes::_anewarray); }; |
| 0 | 373 |
| 374 // Creation | |
| 375 inline friend Bytecode_anewarray* Bytecode_anewarray_at(address bcp); | |
| 376 }; | |
| 377 | |
| 378 inline Bytecode_anewarray* Bytecode_anewarray_at(address bcp) { | |
| 379 Bytecode_anewarray* b = (Bytecode_anewarray*)bcp; | |
| 1602 | 380 DEBUG_ONLY(b->verify()); |
| 0 | 381 return b; |
| 382 } | |
| 383 | |
| 384 | |
| 385 // Abstraction for ldc, ldc_w and ldc2_w | |
| 386 | |
| 1602 | 387 class Bytecode_loadconstant: public ResourceObj { |
| 388 private: | |
| 389 int _bci; | |
| 390 methodHandle _method; | |
| 391 | |
| 392 Bytecodes::Code code() const { return bytecode()->code(); } | |
| 393 | |
| 394 int raw_index() const; | |
| 395 | |
| 396 Bytecode_loadconstant(methodHandle method, int bci) : _method(method), _bci(bci) {} | |
| 397 | |
| 0 | 398 public: |
| 1602 | 399 // Attributes |
| 400 methodHandle method() const { return _method; } | |
| 401 int bci() const { return _bci; } | |
| 402 address bcp() const { return _method->bcp_from(bci()); } | |
| 403 Bytecode* bytecode() const { return Bytecode_at(bcp()); } | |
| 404 | |
| 0 | 405 void verify() const { |
| 1602 | 406 assert(_method.not_null(), "must supply method"); |
| 0 | 407 Bytecodes::Code stdc = Bytecodes::java_code(code()); |
| 408 assert(stdc == Bytecodes::_ldc || | |
| 409 stdc == Bytecodes::_ldc_w || | |
| 410 stdc == Bytecodes::_ldc2_w, "load constant"); | |
| 411 } | |
| 412 | |
| 1602 | 413 // Only non-standard bytecodes (fast_aldc) have CP cache indexes. |
| 414 bool has_cache_index() const { return code() >= Bytecodes::number_of_java_codes; } | |
| 0 | 415 |
| 1602 | 416 int pool_index() const; // index into constant pool |
| 417 int cache_index() const { // index into CP cache (or -1 if none) | |
| 418 return has_cache_index() ? raw_index() : -1; | |
| 419 } | |
| 420 | |
| 421 BasicType result_type() const; // returns the result type of the ldc | |
| 422 | |
| 423 oop resolve_constant(TRAPS) const; | |
| 424 | |
| 425 // Creation | |
| 426 inline friend Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci); | |
| 0 | 427 }; |
| 428 | |
| 1602 | 429 inline Bytecode_loadconstant* Bytecode_loadconstant_at(methodHandle method, int bci) { |
| 430 Bytecode_loadconstant* b = new Bytecode_loadconstant(method, bci); | |
| 431 DEBUG_ONLY(b->verify()); | |
| 0 | 432 return b; |
| 433 } |