1 /* 2 * Copyright (c) 1997, 2024, Oracle and/or its affiliates. All rights reserved. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "precompiled.hpp" 26 #include "asm/codeBuffer.hpp" 27 #include "asm/macroAssembler.inline.hpp" 28 #include "memory/resourceArea.hpp" 29 #include "oops/access.inline.hpp" 30 #include "oops/klass.hpp" 31 #include "oops/oop.inline.hpp" 32 #include "prims/vectorSupport.hpp" 33 #include "runtime/continuation.hpp" 34 #include "runtime/interfaceSupport.inline.hpp" 35 #include "runtime/timerTrace.hpp" 36 #include "runtime/sharedRuntime.hpp" 37 #include "runtime/stubRoutines.hpp" 38 #include "utilities/align.hpp" 39 #include "utilities/copy.hpp" 40 #ifdef COMPILER2 41 #include "opto/runtime.hpp" 42 #endif 43 44 UnsafeMemoryAccess* UnsafeMemoryAccess::_table = nullptr; 45 int UnsafeMemoryAccess::_table_length = 0; 46 int UnsafeMemoryAccess::_table_max_length = 0; 47 address UnsafeMemoryAccess::_common_exit_stub_pc = nullptr; 48 49 // Implementation of StubRoutines - for a description 50 // of how to extend it, see the header file. 51 52 // Class Variables 53 54 BufferBlob* StubRoutines::_initial_stubs_code = nullptr; 55 BufferBlob* StubRoutines::_final_stubs_code = nullptr; 56 BufferBlob* StubRoutines::_compiler_stubs_code = nullptr; 57 BufferBlob* StubRoutines::_continuation_stubs_code = nullptr; 58 59 address StubRoutines::_call_stub_return_address = nullptr; 60 address StubRoutines::_call_stub_entry = nullptr; 61 62 address StubRoutines::_catch_exception_entry = nullptr; 63 address StubRoutines::_forward_exception_entry = nullptr; 64 jint StubRoutines::_verify_oop_count = 0; 65 address StubRoutines::_verify_oop_subroutine_entry = nullptr; 66 address StubRoutines::_atomic_xchg_entry = nullptr; 67 address StubRoutines::_atomic_cmpxchg_entry = nullptr; 68 address StubRoutines::_atomic_cmpxchg_long_entry = nullptr; 69 address StubRoutines::_atomic_add_entry = nullptr; 70 address StubRoutines::_fence_entry = nullptr; 71 72 // Compiled code entry points default values 73 // The default functions don't have separate disjoint versions. 74 address StubRoutines::_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); 75 address StubRoutines::_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); 76 address StubRoutines::_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); 77 address StubRoutines::_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); 78 address StubRoutines::_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); 79 address StubRoutines::_oop_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy_uninit); 80 address StubRoutines::_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jbyte_copy); 81 address StubRoutines::_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jshort_copy); 82 address StubRoutines::_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jint_copy); 83 address StubRoutines::_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::jlong_copy); 84 address StubRoutines::_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy); 85 address StubRoutines::_oop_disjoint_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::oop_copy_uninit); 86 87 address StubRoutines::_arrayof_jbyte_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); 88 address StubRoutines::_arrayof_jshort_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); 89 address StubRoutines::_arrayof_jint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); 90 address StubRoutines::_arrayof_jlong_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); 91 address StubRoutines::_arrayof_oop_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); 92 address StubRoutines::_arrayof_oop_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy_uninit); 93 address StubRoutines::_arrayof_jbyte_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jbyte_copy); 94 address StubRoutines::_arrayof_jshort_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jshort_copy); 95 address StubRoutines::_arrayof_jint_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jint_copy); 96 address StubRoutines::_arrayof_jlong_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_jlong_copy); 97 address StubRoutines::_arrayof_oop_disjoint_arraycopy = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy); 98 address StubRoutines::_arrayof_oop_disjoint_arraycopy_uninit = CAST_FROM_FN_PTR(address, StubRoutines::arrayof_oop_copy_uninit); 99 100 address StubRoutines::_data_cache_writeback = nullptr; 101 address StubRoutines::_data_cache_writeback_sync = nullptr; 102 103 address StubRoutines::_checkcast_arraycopy = nullptr; 104 address StubRoutines::_checkcast_arraycopy_uninit = nullptr; 105 address StubRoutines::_unsafe_arraycopy = nullptr; 106 address StubRoutines::_generic_arraycopy = nullptr; 107 108 address StubRoutines::_unsafe_setmemory = nullptr; 109 110 address StubRoutines::_jbyte_fill; 111 address StubRoutines::_jshort_fill; 112 address StubRoutines::_jint_fill; 113 address StubRoutines::_arrayof_jbyte_fill; 114 address StubRoutines::_arrayof_jshort_fill; 115 address StubRoutines::_arrayof_jint_fill; 116 117 address StubRoutines::_aescrypt_encryptBlock = nullptr; 118 address StubRoutines::_aescrypt_decryptBlock = nullptr; 119 address StubRoutines::_cipherBlockChaining_encryptAESCrypt = nullptr; 120 address StubRoutines::_cipherBlockChaining_decryptAESCrypt = nullptr; 121 address StubRoutines::_electronicCodeBook_encryptAESCrypt = nullptr; 122 address StubRoutines::_electronicCodeBook_decryptAESCrypt = nullptr; 123 address StubRoutines::_counterMode_AESCrypt = nullptr; 124 address StubRoutines::_galoisCounterMode_AESCrypt = nullptr; 125 address StubRoutines::_ghash_processBlocks = nullptr; 126 address StubRoutines::_chacha20Block = nullptr; 127 address StubRoutines::_base64_encodeBlock = nullptr; 128 address StubRoutines::_base64_decodeBlock = nullptr; 129 address StubRoutines::_poly1305_processBlocks = nullptr; 130 address StubRoutines::_intpoly_montgomeryMult_P256 = nullptr; 131 address StubRoutines::_intpoly_assign = nullptr; 132 133 address StubRoutines::_md5_implCompress = nullptr; 134 address StubRoutines::_md5_implCompressMB = nullptr; 135 address StubRoutines::_sha1_implCompress = nullptr; 136 address StubRoutines::_sha1_implCompressMB = nullptr; 137 address StubRoutines::_sha256_implCompress = nullptr; 138 address StubRoutines::_sha256_implCompressMB = nullptr; 139 address StubRoutines::_sha512_implCompress = nullptr; 140 address StubRoutines::_sha512_implCompressMB = nullptr; 141 address StubRoutines::_sha3_implCompress = nullptr; 142 address StubRoutines::_sha3_implCompressMB = nullptr; 143 144 address StubRoutines::_updateBytesCRC32 = nullptr; 145 address StubRoutines::_crc_table_adr = nullptr; 146 147 address StubRoutines::_string_indexof_array[4] = { nullptr }; 148 149 address StubRoutines::_crc32c_table_addr = nullptr; 150 address StubRoutines::_updateBytesCRC32C = nullptr; 151 address StubRoutines::_updateBytesAdler32 = nullptr; 152 153 address StubRoutines::_multiplyToLen = nullptr; 154 address StubRoutines::_squareToLen = nullptr; 155 address StubRoutines::_mulAdd = nullptr; 156 address StubRoutines::_montgomeryMultiply = nullptr; 157 address StubRoutines::_montgomerySquare = nullptr; 158 address StubRoutines::_bigIntegerRightShiftWorker = nullptr; 159 address StubRoutines::_bigIntegerLeftShiftWorker = nullptr; 160 161 address StubRoutines::_vectorizedMismatch = nullptr; 162 163 address StubRoutines::_dexp = nullptr; 164 address StubRoutines::_dlog = nullptr; 165 address StubRoutines::_dlog10 = nullptr; 166 address StubRoutines::_fmod = nullptr; 167 address StubRoutines::_dpow = nullptr; 168 address StubRoutines::_dsin = nullptr; 169 address StubRoutines::_dcos = nullptr; 170 address StubRoutines::_dlibm_sin_cos_huge = nullptr; 171 address StubRoutines::_dlibm_reduce_pi04l = nullptr; 172 address StubRoutines::_dlibm_tan_cot_huge = nullptr; 173 address StubRoutines::_dtan = nullptr; 174 175 address StubRoutines::_f2hf = nullptr; 176 address StubRoutines::_hf2f = nullptr; 177 178 address StubRoutines::_vector_f_math[VectorSupport::NUM_VEC_SIZES][VectorSupport::NUM_SVML_OP] = {{nullptr}, {nullptr}}; 179 address StubRoutines::_vector_d_math[VectorSupport::NUM_VEC_SIZES][VectorSupport::NUM_SVML_OP] = {{nullptr}, {nullptr}}; 180 181 address StubRoutines::_method_entry_barrier = nullptr; 182 address StubRoutines::_array_sort = nullptr; 183 address StubRoutines::_array_partition = nullptr; 184 185 address StubRoutines::_cont_thaw = nullptr; 186 address StubRoutines::_cont_returnBarrier = nullptr; 187 address StubRoutines::_cont_returnBarrierExc = nullptr; 188 189 address StubRoutines::_upcall_stub_exception_handler = nullptr; 190 191 address StubRoutines::_lookup_secondary_supers_table_slow_path_stub = nullptr; 192 address StubRoutines::_lookup_secondary_supers_table_stubs[Klass::SECONDARY_SUPERS_TABLE_SIZE] = { nullptr }; 193 194 195 // Initialization 196 // 197 // Note: to break cycle with universe initialization, stubs are generated in two phases. 198 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry). 199 // The second phase includes all other stubs (which may depend on universe being initialized.) 200 201 extern void StubGenerator_generate(CodeBuffer* code, StubCodeGenerator::StubsKind kind); // only interface to generators 202 203 void UnsafeMemoryAccess::create_table(int max_size) { 204 UnsafeMemoryAccess::_table = new UnsafeMemoryAccess[max_size]; 205 UnsafeMemoryAccess::_table_max_length = max_size; 206 } 207 208 bool UnsafeMemoryAccess::contains_pc(address pc) { 209 for (int i = 0; i < UnsafeMemoryAccess::_table_length; i++) { 210 UnsafeMemoryAccess* entry = &UnsafeMemoryAccess::_table[i]; 211 if (pc >= entry->start_pc() && pc < entry->end_pc()) { 212 return true; 213 } 214 } 215 return false; 216 } 217 218 address UnsafeMemoryAccess::page_error_continue_pc(address pc) { 219 for (int i = 0; i < UnsafeMemoryAccess::_table_length; i++) { 220 UnsafeMemoryAccess* entry = &UnsafeMemoryAccess::_table[i]; 221 if (pc >= entry->start_pc() && pc < entry->end_pc()) { 222 return entry->error_exit_pc(); 223 } 224 } 225 return nullptr; 226 } 227 228 229 static BufferBlob* initialize_stubs(StubCodeGenerator::StubsKind kind, 230 int code_size, int max_aligned_stubs, 231 const char* timer_msg, 232 const char* buffer_name, 233 const char* assert_msg) { 234 ResourceMark rm; 235 TraceTime timer(timer_msg, TRACETIME_LOG(Info, startuptime)); 236 // Add extra space for large CodeEntryAlignment 237 int size = code_size + CodeEntryAlignment * max_aligned_stubs; 238 BufferBlob* stubs_code = BufferBlob::create(buffer_name, size); 239 if (stubs_code == nullptr) { 240 vm_exit_out_of_memory(code_size, OOM_MALLOC_ERROR, "CodeCache: no room for %s", buffer_name); 241 } 242 CodeBuffer buffer(stubs_code); 243 StubGenerator_generate(&buffer, kind); 244 // When new stubs added we need to make sure there is some space left 245 // to catch situation when we should increase size again. 246 assert(code_size == 0 || buffer.insts_remaining() > 200, "increase %s", assert_msg); 247 248 LogTarget(Info, stubs) lt; 249 if (lt.is_enabled()) { 250 LogStream ls(lt); 251 ls.print_cr("%s\t [" INTPTR_FORMAT ", " INTPTR_FORMAT "] used: %d, free: %d", 252 buffer_name, p2i(stubs_code->content_begin()), p2i(stubs_code->content_end()), 253 buffer.total_content_size(), buffer.insts_remaining()); 254 } 255 return stubs_code; 256 } 257 258 void StubRoutines::initialize_initial_stubs() { 259 if (_initial_stubs_code == nullptr) { 260 _initial_stubs_code = initialize_stubs(StubCodeGenerator::Initial_stubs, 261 _initial_stubs_code_size, 10, 262 "StubRoutines generation initial stubs", 263 "StubRoutines (initial stubs)", 264 "_initial_stubs_code_size"); 265 } 266 } 267 268 void StubRoutines::initialize_continuation_stubs() { 269 if (_continuation_stubs_code == nullptr) { 270 _continuation_stubs_code = initialize_stubs(StubCodeGenerator::Continuation_stubs, 271 _continuation_stubs_code_size, 10, 272 "StubRoutines generation continuation stubs", 273 "StubRoutines (continuation stubs)", 274 "_continuation_stubs_code_size"); 275 } 276 } 277 278 void StubRoutines::initialize_compiler_stubs() { 279 if (_compiler_stubs_code == nullptr) { 280 _compiler_stubs_code = initialize_stubs(StubCodeGenerator::Compiler_stubs, 281 _compiler_stubs_code_size, 100, 282 "StubRoutines generation compiler stubs", 283 "StubRoutines (compiler stubs)", 284 "_compiler_stubs_code_size"); 285 } 286 } 287 288 void StubRoutines::initialize_final_stubs() { 289 if (_final_stubs_code == nullptr) { 290 _final_stubs_code = initialize_stubs(StubCodeGenerator::Final_stubs, 291 _final_stubs_code_size, 10, 292 "StubRoutines generation final stubs", 293 "StubRoutines (final stubs)", 294 "_final_stubs_code_size"); 295 } 296 } 297 298 void initial_stubs_init() { StubRoutines::initialize_initial_stubs(); } 299 void continuation_stubs_init() { StubRoutines::initialize_continuation_stubs(); } 300 void final_stubs_init() { StubRoutines::initialize_final_stubs(); } 301 302 void compiler_stubs_init(bool in_compiler_thread) { 303 if (in_compiler_thread && DelayCompilerStubsGeneration) { 304 // Temporarily revert state of stubs generation because 305 // it is called after final_stubs_init() finished 306 // during compiler runtime initialization. 307 // It is fine because these stubs are only used by 308 // compiled code and compiler is not running yet. 309 StubCodeDesc::unfreeze(); 310 StubRoutines::initialize_compiler_stubs(); 311 StubCodeDesc::freeze(); 312 } else if (!in_compiler_thread && !DelayCompilerStubsGeneration) { 313 StubRoutines::initialize_compiler_stubs(); 314 } 315 } 316 317 // 318 // Default versions of arraycopy functions 319 // 320 321 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count)) 322 #ifndef PRODUCT 323 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy 324 #endif // !PRODUCT 325 Copy::conjoint_jbytes_atomic(src, dest, count); 326 JRT_END 327 328 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count)) 329 #ifndef PRODUCT 330 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy 331 #endif // !PRODUCT 332 Copy::conjoint_jshorts_atomic(src, dest, count); 333 JRT_END 334 335 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count)) 336 #ifndef PRODUCT 337 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy 338 #endif // !PRODUCT 339 Copy::conjoint_jints_atomic(src, dest, count); 340 JRT_END 341 342 JRT_LEAF(void, StubRoutines::jlong_copy(jlong* src, jlong* dest, size_t count)) 343 #ifndef PRODUCT 344 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path long/double array copy 345 #endif // !PRODUCT 346 Copy::conjoint_jlongs_atomic(src, dest, count); 347 JRT_END 348 349 JRT_LEAF(void, StubRoutines::oop_copy(oop* src, oop* dest, size_t count)) 350 #ifndef PRODUCT 351 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy 352 #endif // !PRODUCT 353 assert(count != 0, "count should be non-zero"); 354 ArrayAccess<>::oop_arraycopy_raw((HeapWord*)src, (HeapWord*)dest, count); 355 JRT_END 356 357 JRT_LEAF(void, StubRoutines::oop_copy_uninit(oop* src, oop* dest, size_t count)) 358 #ifndef PRODUCT 359 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy 360 #endif // !PRODUCT 361 assert(count != 0, "count should be non-zero"); 362 ArrayAccess<IS_DEST_UNINITIALIZED>::oop_arraycopy_raw((HeapWord*)src, (HeapWord*)dest, count); 363 JRT_END 364 365 JRT_LEAF(void, StubRoutines::arrayof_jbyte_copy(HeapWord* src, HeapWord* dest, size_t count)) 366 #ifndef PRODUCT 367 SharedRuntime::_jbyte_array_copy_ctr++; // Slow-path byte array copy 368 #endif // !PRODUCT 369 Copy::arrayof_conjoint_jbytes(src, dest, count); 370 JRT_END 371 372 JRT_LEAF(void, StubRoutines::arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count)) 373 #ifndef PRODUCT 374 SharedRuntime::_jshort_array_copy_ctr++; // Slow-path short/char array copy 375 #endif // !PRODUCT 376 Copy::arrayof_conjoint_jshorts(src, dest, count); 377 JRT_END 378 379 JRT_LEAF(void, StubRoutines::arrayof_jint_copy(HeapWord* src, HeapWord* dest, size_t count)) 380 #ifndef PRODUCT 381 SharedRuntime::_jint_array_copy_ctr++; // Slow-path int/float array copy 382 #endif // !PRODUCT 383 Copy::arrayof_conjoint_jints(src, dest, count); 384 JRT_END 385 386 JRT_LEAF(void, StubRoutines::arrayof_jlong_copy(HeapWord* src, HeapWord* dest, size_t count)) 387 #ifndef PRODUCT 388 SharedRuntime::_jlong_array_copy_ctr++; // Slow-path int/float array copy 389 #endif // !PRODUCT 390 Copy::arrayof_conjoint_jlongs(src, dest, count); 391 JRT_END 392 393 JRT_LEAF(void, StubRoutines::arrayof_oop_copy(HeapWord* src, HeapWord* dest, size_t count)) 394 #ifndef PRODUCT 395 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy 396 #endif // !PRODUCT 397 assert(count != 0, "count should be non-zero"); 398 ArrayAccess<ARRAYCOPY_ARRAYOF>::oop_arraycopy_raw(src, dest, count); 399 JRT_END 400 401 JRT_LEAF(void, StubRoutines::arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count)) 402 #ifndef PRODUCT 403 SharedRuntime::_oop_array_copy_ctr++; // Slow-path oop array copy 404 #endif // !PRODUCT 405 assert(count != 0, "count should be non-zero"); 406 ArrayAccess<ARRAYCOPY_ARRAYOF | IS_DEST_UNINITIALIZED>::oop_arraycopy_raw(src, dest, count); 407 JRT_END 408 409 address StubRoutines::select_fill_function(BasicType t, bool aligned, const char* &name) { 410 #define RETURN_STUB(xxx_fill) { \ 411 name = #xxx_fill; \ 412 return StubRoutines::xxx_fill(); } 413 414 switch (t) { 415 case T_BYTE: 416 case T_BOOLEAN: 417 if (!aligned) RETURN_STUB(jbyte_fill); 418 RETURN_STUB(arrayof_jbyte_fill); 419 case T_CHAR: 420 case T_SHORT: 421 if (!aligned) RETURN_STUB(jshort_fill); 422 RETURN_STUB(arrayof_jshort_fill); 423 case T_INT: 424 case T_FLOAT: 425 if (!aligned) RETURN_STUB(jint_fill); 426 RETURN_STUB(arrayof_jint_fill); 427 case T_DOUBLE: 428 case T_LONG: 429 case T_ARRAY: 430 case T_OBJECT: 431 case T_NARROWOOP: 432 case T_NARROWKLASS: 433 case T_ADDRESS: 434 case T_VOID: 435 // Currently unsupported 436 return nullptr; 437 438 default: 439 ShouldNotReachHere(); 440 return nullptr; 441 } 442 443 #undef RETURN_STUB 444 } 445 446 // constants for computing the copy function 447 enum { 448 COPYFUNC_UNALIGNED = 0, 449 COPYFUNC_ALIGNED = 1, // src, dest aligned to HeapWordSize 450 COPYFUNC_CONJOINT = 0, 451 COPYFUNC_DISJOINT = 2 // src != dest, or transfer can descend 452 }; 453 454 // Note: The condition "disjoint" applies also for overlapping copies 455 // where an descending copy is permitted (i.e., dest_offset <= src_offset). 456 address 457 StubRoutines::select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized) { 458 int selector = 459 (aligned ? COPYFUNC_ALIGNED : COPYFUNC_UNALIGNED) + 460 (disjoint ? COPYFUNC_DISJOINT : COPYFUNC_CONJOINT); 461 462 #define RETURN_STUB(xxx_arraycopy) { \ 463 name = #xxx_arraycopy; \ 464 return StubRoutines::xxx_arraycopy(); } 465 466 #define RETURN_STUB_PARM(xxx_arraycopy, parm) { \ 467 name = parm ? #xxx_arraycopy "_uninit": #xxx_arraycopy; \ 468 return StubRoutines::xxx_arraycopy(parm); } 469 470 switch (t) { 471 case T_BYTE: 472 case T_BOOLEAN: 473 switch (selector) { 474 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jbyte_arraycopy); 475 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jbyte_arraycopy); 476 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jbyte_disjoint_arraycopy); 477 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jbyte_disjoint_arraycopy); 478 } 479 case T_CHAR: 480 case T_SHORT: 481 switch (selector) { 482 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jshort_arraycopy); 483 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jshort_arraycopy); 484 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jshort_disjoint_arraycopy); 485 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jshort_disjoint_arraycopy); 486 } 487 case T_INT: 488 case T_FLOAT: 489 switch (selector) { 490 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jint_arraycopy); 491 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jint_arraycopy); 492 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jint_disjoint_arraycopy); 493 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jint_disjoint_arraycopy); 494 } 495 case T_DOUBLE: 496 case T_LONG: 497 switch (selector) { 498 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jlong_arraycopy); 499 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jlong_arraycopy); 500 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB(jlong_disjoint_arraycopy); 501 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB(arrayof_jlong_disjoint_arraycopy); 502 } 503 case T_ARRAY: 504 case T_OBJECT: 505 switch (selector) { 506 case COPYFUNC_CONJOINT | COPYFUNC_UNALIGNED: RETURN_STUB_PARM(oop_arraycopy, dest_uninitialized); 507 case COPYFUNC_CONJOINT | COPYFUNC_ALIGNED: RETURN_STUB_PARM(arrayof_oop_arraycopy, dest_uninitialized); 508 case COPYFUNC_DISJOINT | COPYFUNC_UNALIGNED: RETURN_STUB_PARM(oop_disjoint_arraycopy, dest_uninitialized); 509 case COPYFUNC_DISJOINT | COPYFUNC_ALIGNED: RETURN_STUB_PARM(arrayof_oop_disjoint_arraycopy, dest_uninitialized); 510 } 511 default: 512 ShouldNotReachHere(); 513 return nullptr; 514 } 515 516 #undef RETURN_STUB 517 #undef RETURN_STUB_PARM 518 } 519 520 UnsafeMemoryAccessMark::UnsafeMemoryAccessMark(StubCodeGenerator* cgen, bool add_entry, bool continue_at_scope_end, address error_exit_pc) { 521 _cgen = cgen; 522 _ucm_entry = nullptr; 523 if (add_entry) { 524 address err_exit_pc = nullptr; 525 if (!continue_at_scope_end) { 526 err_exit_pc = error_exit_pc != nullptr ? error_exit_pc : UnsafeMemoryAccess::common_exit_stub_pc(); 527 } 528 assert(err_exit_pc != nullptr || continue_at_scope_end, "error exit not set"); 529 _ucm_entry = UnsafeMemoryAccess::add_to_table(_cgen->assembler()->pc(), nullptr, err_exit_pc); 530 } 531 } 532 533 UnsafeMemoryAccessMark::~UnsafeMemoryAccessMark() { 534 if (_ucm_entry != nullptr) { 535 _ucm_entry->set_end_pc(_cgen->assembler()->pc()); 536 if (_ucm_entry->error_exit_pc() == nullptr) { 537 _ucm_entry->set_error_exit_pc(_cgen->assembler()->pc()); 538 } 539 } 540 }