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src/hotspot/share/runtime/stubRoutines.cpp

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  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/oop.inline.hpp"

  31 #include "runtime/interfaceSupport.inline.hpp"
  32 #include "runtime/timerTrace.hpp"
  33 #include "runtime/sharedRuntime.hpp"
  34 #include "runtime/stubRoutines.hpp"
  35 #include "utilities/align.hpp"
  36 #include "utilities/copy.hpp"
  37 #include "utilities/vmError.hpp"
  38 #ifdef COMPILER2
  39 #include "opto/runtime.hpp"
  40 #endif
  41 
  42 UnsafeCopyMemory* UnsafeCopyMemory::_table                      = NULL;
  43 int UnsafeCopyMemory::_table_length                             = 0;
  44 int UnsafeCopyMemory::_table_max_length                         = 0;
  45 address UnsafeCopyMemory::_common_exit_stub_pc                  = NULL;
  46 
  47 // Implementation of StubRoutines - for a description
  48 // of how to extend it, see the header file.
  49 
  50 // Class Variables
  51 
  52 BufferBlob* StubRoutines::_code1                                = NULL;
  53 BufferBlob* StubRoutines::_code2                                = NULL;

  54 
  55 address StubRoutines::_call_stub_return_address                 = NULL;
  56 address StubRoutines::_call_stub_entry                          = NULL;
  57 
  58 address StubRoutines::_catch_exception_entry                    = NULL;
  59 address StubRoutines::_forward_exception_entry                  = NULL;
  60 address StubRoutines::_throw_AbstractMethodError_entry          = NULL;
  61 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL;
  62 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL;
  63 address StubRoutines::_throw_StackOverflowError_entry           = NULL;
  64 address StubRoutines::_throw_delayed_StackOverflowError_entry   = NULL;
  65 jint    StubRoutines::_verify_oop_count                         = 0;
  66 address StubRoutines::_verify_oop_subroutine_entry              = NULL;
  67 address StubRoutines::_atomic_xchg_entry                        = NULL;
  68 address StubRoutines::_atomic_xchg_long_entry                   = NULL;
  69 address StubRoutines::_atomic_store_entry                       = NULL;
  70 address StubRoutines::_atomic_cmpxchg_entry                     = NULL;
  71 address StubRoutines::_atomic_cmpxchg_byte_entry                = NULL;
  72 address StubRoutines::_atomic_cmpxchg_long_entry                = NULL;
  73 address StubRoutines::_atomic_add_entry                         = NULL;


 156 address StubRoutines::_vectorizedMismatch = NULL;
 157 
 158 address StubRoutines::_dexp = NULL;
 159 address StubRoutines::_dlog = NULL;
 160 address StubRoutines::_dlog10 = NULL;
 161 address StubRoutines::_dpow = NULL;
 162 address StubRoutines::_dsin = NULL;
 163 address StubRoutines::_dcos = NULL;
 164 address StubRoutines::_dlibm_sin_cos_huge = NULL;
 165 address StubRoutines::_dlibm_reduce_pi04l = NULL;
 166 address StubRoutines::_dlibm_tan_cot_huge = NULL;
 167 address StubRoutines::_dtan = NULL;
 168 
 169 address StubRoutines::_safefetch32_entry                 = NULL;
 170 address StubRoutines::_safefetch32_fault_pc              = NULL;
 171 address StubRoutines::_safefetch32_continuation_pc       = NULL;
 172 address StubRoutines::_safefetchN_entry                  = NULL;
 173 address StubRoutines::_safefetchN_fault_pc               = NULL;
 174 address StubRoutines::_safefetchN_continuation_pc        = NULL;
 175 










 176 // Initialization
 177 //
 178 // Note: to break cycle with universe initialization, stubs are generated in two phases.
 179 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry).
 180 // The second phase includes all other stubs (which may depend on universe being initialized.)
 181 
 182 extern void StubGenerator_generate(CodeBuffer* code, bool all); // only interface to generators
 183 
 184 void UnsafeCopyMemory::create_table(int max_size) {
 185   UnsafeCopyMemory::_table = new UnsafeCopyMemory[max_size];
 186   UnsafeCopyMemory::_table_max_length = max_size;
 187 }
 188 
 189 bool UnsafeCopyMemory::contains_pc(address pc) {
 190   for (int i = 0; i < UnsafeCopyMemory::_table_length; i++) {
 191     UnsafeCopyMemory* entry = &UnsafeCopyMemory::_table[i];
 192     if (pc >= entry->start_pc() && pc < entry->end_pc()) {
 193       return true;
 194     }
 195   }
 196   return false;
 197 }
 198 
 199 address UnsafeCopyMemory::page_error_continue_pc(address pc) {
 200   for (int i = 0; i < UnsafeCopyMemory::_table_length; i++) {
 201     UnsafeCopyMemory* entry = &UnsafeCopyMemory::_table[i];
 202     if (pc >= entry->start_pc() && pc < entry->end_pc()) {
 203       return entry->error_exit_pc();
 204     }
 205   }
 206   return NULL;
 207 }
 208 
 209 void StubRoutines::initialize1() {
 210   if (_code1 == NULL) {
 211     ResourceMark rm;
 212     TraceTime timer("StubRoutines generation 1", TRACETIME_LOG(Info, startuptime));
 213     _code1 = BufferBlob::create("StubRoutines (1)", code_size1);
 214     if (_code1 == NULL) {
 215       vm_exit_out_of_memory(code_size1, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (1)");
 216     }
 217     CodeBuffer buffer(_code1);
 218     StubGenerator_generate(&buffer, false);
 219     // When new stubs added we need to make sure there is some space left
 220     // to catch situation when we should increase size again.
 221     assert(code_size1 == 0 || buffer.insts_remaining() > 200, "increase code_size1");
 222   }
 223 }
 224 
 225 
 226 #ifdef ASSERT
 227 typedef void (*arraycopy_fn)(address src, address dst, int count);
 228 
 229 // simple tests of generated arraycopy functions
 230 static void test_arraycopy_func(address func, int alignment) {
 231   int v = 0xcc;
 232   int v2 = 0x11;
 233   jlong lbuffer[8];
 234   jlong lbuffer2[8];
 235   address fbuffer  = (address) lbuffer;
 236   address fbuffer2 = (address) lbuffer2;
 237   unsigned int i;
 238   for (i = 0; i < sizeof(lbuffer); i++) {
 239     fbuffer[i] = v; fbuffer2[i] = v2;
 240   }
 241   // C++ does not guarantee jlong[] array alignment to 8 bytes.
 242   // Use middle of array to check that memory before it is not modified.
 243   address buffer  = align_up((address)&lbuffer[4], BytesPerLong);
 244   address buffer2 = align_up((address)&lbuffer2[4], BytesPerLong);
 245   // do an aligned copy


 276 static void test_safefetchN() {
 277   if (CanUseSafeFetchN()) {
 278 #ifdef _LP64
 279     const intptr_t v1 = UCONST64(0xABCD00000000ABCD);
 280     const intptr_t v2 = UCONST64(0xDEFD00000000DEFD);
 281 #else
 282     const intptr_t v1 = 0xABCDABCD;
 283     const intptr_t v2 = 0xDEFDDEFD;
 284 #endif
 285     intptr_t dummy = v1;
 286     intptr_t* const p_invalid = (intptr_t*) VMError::get_segfault_address();
 287     intptr_t* const p_valid = &dummy;
 288     intptr_t result_invalid = SafeFetchN(p_invalid, v2);
 289     assert(result_invalid == v2, "SafeFetchN error");
 290     intptr_t result_valid = SafeFetchN(p_valid, v2);
 291     assert(result_valid == v1, "SafeFetchN error");
 292   }
 293 }
 294 #endif
 295 
















 296 void StubRoutines::initialize2() {
 297   if (_code2 == NULL) {
 298     ResourceMark rm;
 299     TraceTime timer("StubRoutines generation 2", TRACETIME_LOG(Info, startuptime));
 300     _code2 = BufferBlob::create("StubRoutines (2)", code_size2);
 301     if (_code2 == NULL) {
 302       vm_exit_out_of_memory(code_size2, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (2)");
 303     }
 304     CodeBuffer buffer(_code2);
 305     StubGenerator_generate(&buffer, true);
 306     // When new stubs added we need to make sure there is some space left
 307     // to catch situation when we should increase size again.
 308     assert(code_size2 == 0 || buffer.insts_remaining() > 200, "increase code_size2");
 309   }
 310 
 311 #ifdef ASSERT
 312 
 313 #define TEST_ARRAYCOPY(type)                                                    \
 314   test_arraycopy_func(          type##_arraycopy(),          sizeof(type));     \
 315   test_arraycopy_func(          type##_disjoint_arraycopy(), sizeof(type));     \
 316   test_arraycopy_func(arrayof_##type##_arraycopy(),          sizeof(HeapWord)); \
 317   test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord))
 318 
 319   // Make sure all the arraycopy stubs properly handle zero count
 320   TEST_ARRAYCOPY(jbyte);
 321   TEST_ARRAYCOPY(jshort);
 322   TEST_ARRAYCOPY(jint);
 323   TEST_ARRAYCOPY(jlong);
 324 
 325 #undef TEST_ARRAYCOPY


 379   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord));
 380   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord));
 381   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord));
 382   // Aligned to BytesPerLong
 383   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong));
 384   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong));
 385 
 386   // test safefetch routines
 387   // Not on Windows 32bit until 8074860 is fixed
 388 #if ! (defined(_WIN32) && defined(_M_IX86))
 389   test_safefetch32();
 390   test_safefetchN();
 391 #endif
 392 
 393 #endif
 394 }
 395 
 396 
 397 void stubRoutines_init1() { StubRoutines::initialize1(); }
 398 void stubRoutines_init2() { StubRoutines::initialize2(); }

 399 
 400 //
 401 // Default versions of arraycopy functions
 402 //
 403 
 404 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count))
 405 #ifndef PRODUCT
 406   SharedRuntime::_jbyte_array_copy_ctr++;      // Slow-path byte array copy
 407 #endif // !PRODUCT
 408   Copy::conjoint_jbytes_atomic(src, dest, count);
 409 JRT_END
 410 
 411 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count))
 412 #ifndef PRODUCT
 413   SharedRuntime::_jshort_array_copy_ctr++;     // Slow-path short/char array copy
 414 #endif // !PRODUCT
 415   Copy::conjoint_jshorts_atomic(src, dest, count);
 416 JRT_END
 417 
 418 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count))




  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/oop.inline.hpp"
  31 #include "runtime/continuation.hpp"
  32 #include "runtime/interfaceSupport.inline.hpp"
  33 #include "runtime/timerTrace.hpp"
  34 #include "runtime/sharedRuntime.hpp"
  35 #include "runtime/stubRoutines.hpp"
  36 #include "utilities/align.hpp"
  37 #include "utilities/copy.hpp"
  38 #include "utilities/vmError.hpp"
  39 #ifdef COMPILER2
  40 #include "opto/runtime.hpp"
  41 #endif
  42 
  43 UnsafeCopyMemory* UnsafeCopyMemory::_table                      = NULL;
  44 int UnsafeCopyMemory::_table_length                             = 0;
  45 int UnsafeCopyMemory::_table_max_length                         = 0;
  46 address UnsafeCopyMemory::_common_exit_stub_pc                  = NULL;
  47 
  48 // Implementation of StubRoutines - for a description
  49 // of how to extend it, see the header file.
  50 
  51 // Class Variables
  52 
  53 BufferBlob* StubRoutines::_code1                                = NULL;
  54 BufferBlob* StubRoutines::_code2                                = NULL;
  55 BufferBlob* StubRoutines::_code3                                = NULL;
  56 
  57 address StubRoutines::_call_stub_return_address                 = NULL;
  58 address StubRoutines::_call_stub_entry                          = NULL;
  59 
  60 address StubRoutines::_catch_exception_entry                    = NULL;
  61 address StubRoutines::_forward_exception_entry                  = NULL;
  62 address StubRoutines::_throw_AbstractMethodError_entry          = NULL;
  63 address StubRoutines::_throw_IncompatibleClassChangeError_entry = NULL;
  64 address StubRoutines::_throw_NullPointerException_at_call_entry = NULL;
  65 address StubRoutines::_throw_StackOverflowError_entry           = NULL;
  66 address StubRoutines::_throw_delayed_StackOverflowError_entry   = NULL;
  67 jint    StubRoutines::_verify_oop_count                         = 0;
  68 address StubRoutines::_verify_oop_subroutine_entry              = NULL;
  69 address StubRoutines::_atomic_xchg_entry                        = NULL;
  70 address StubRoutines::_atomic_xchg_long_entry                   = NULL;
  71 address StubRoutines::_atomic_store_entry                       = NULL;
  72 address StubRoutines::_atomic_cmpxchg_entry                     = NULL;
  73 address StubRoutines::_atomic_cmpxchg_byte_entry                = NULL;
  74 address StubRoutines::_atomic_cmpxchg_long_entry                = NULL;
  75 address StubRoutines::_atomic_add_entry                         = NULL;


 158 address StubRoutines::_vectorizedMismatch = NULL;
 159 
 160 address StubRoutines::_dexp = NULL;
 161 address StubRoutines::_dlog = NULL;
 162 address StubRoutines::_dlog10 = NULL;
 163 address StubRoutines::_dpow = NULL;
 164 address StubRoutines::_dsin = NULL;
 165 address StubRoutines::_dcos = NULL;
 166 address StubRoutines::_dlibm_sin_cos_huge = NULL;
 167 address StubRoutines::_dlibm_reduce_pi04l = NULL;
 168 address StubRoutines::_dlibm_tan_cot_huge = NULL;
 169 address StubRoutines::_dtan = NULL;
 170 
 171 address StubRoutines::_safefetch32_entry                 = NULL;
 172 address StubRoutines::_safefetch32_fault_pc              = NULL;
 173 address StubRoutines::_safefetch32_continuation_pc       = NULL;
 174 address StubRoutines::_safefetchN_entry                  = NULL;
 175 address StubRoutines::_safefetchN_fault_pc               = NULL;
 176 address StubRoutines::_safefetchN_continuation_pc        = NULL;
 177 
 178 RuntimeStub* StubRoutines::_cont_doYield_stub = NULL;
 179 address StubRoutines::_cont_doYield       = NULL;
 180 address StubRoutines::_cont_jump_from_sp  = NULL;
 181 address StubRoutines::_cont_jump          = NULL;
 182 address StubRoutines::_cont_thaw          = NULL;
 183 address StubRoutines::_cont_returnBarrier = NULL;
 184 address StubRoutines::_cont_returnBarrierExc = NULL;
 185 address StubRoutines::_cont_getSP         = NULL;
 186 address StubRoutines::_cont_getPC         = NULL;
 187 
 188 // Initialization
 189 //
 190 // Note: to break cycle with universe initialization, stubs are generated in two phases.
 191 // The first one generates stubs needed during universe init (e.g., _handle_must_compile_first_entry).
 192 // The second phase includes all other stubs (which may depend on universe being initialized.)
 193 
 194 extern void StubGenerator_generate(CodeBuffer* code, int phase); // only interface to generators
 195 
 196 void UnsafeCopyMemory::create_table(int max_size) {
 197   UnsafeCopyMemory::_table = new UnsafeCopyMemory[max_size];
 198   UnsafeCopyMemory::_table_max_length = max_size;
 199 }
 200 
 201 bool UnsafeCopyMemory::contains_pc(address pc) {
 202   for (int i = 0; i < UnsafeCopyMemory::_table_length; i++) {
 203     UnsafeCopyMemory* entry = &UnsafeCopyMemory::_table[i];
 204     if (pc >= entry->start_pc() && pc < entry->end_pc()) {
 205       return true;
 206     }
 207   }
 208   return false;
 209 }
 210 
 211 address UnsafeCopyMemory::page_error_continue_pc(address pc) {
 212   for (int i = 0; i < UnsafeCopyMemory::_table_length; i++) {
 213     UnsafeCopyMemory* entry = &UnsafeCopyMemory::_table[i];
 214     if (pc >= entry->start_pc() && pc < entry->end_pc()) {
 215       return entry->error_exit_pc();
 216     }
 217   }
 218   return NULL;
 219 }
 220 
 221 void StubRoutines::initialize1() {
 222   if (_code1 == NULL) {
 223     ResourceMark rm;
 224     TraceTime timer("StubRoutines generation 1", TRACETIME_LOG(Info, startuptime));
 225     _code1 = BufferBlob::create("StubRoutines (1)", code_size1);
 226     if (_code1 == NULL) {
 227       vm_exit_out_of_memory(code_size1, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (1)");
 228     }
 229     CodeBuffer buffer(_code1);
 230     StubGenerator_generate(&buffer, 0);
 231     // When new stubs added we need to make sure there is some space left
 232     // to catch situation when we should increase size again.
 233     assert(code_size1 == 0 || buffer.insts_remaining() > 200, "increase code_size1");
 234   }
 235 }
 236 

 237 #ifdef ASSERT
 238 typedef void (*arraycopy_fn)(address src, address dst, int count);
 239 
 240 // simple tests of generated arraycopy functions
 241 static void test_arraycopy_func(address func, int alignment) {
 242   int v = 0xcc;
 243   int v2 = 0x11;
 244   jlong lbuffer[8];
 245   jlong lbuffer2[8];
 246   address fbuffer  = (address) lbuffer;
 247   address fbuffer2 = (address) lbuffer2;
 248   unsigned int i;
 249   for (i = 0; i < sizeof(lbuffer); i++) {
 250     fbuffer[i] = v; fbuffer2[i] = v2;
 251   }
 252   // C++ does not guarantee jlong[] array alignment to 8 bytes.
 253   // Use middle of array to check that memory before it is not modified.
 254   address buffer  = align_up((address)&lbuffer[4], BytesPerLong);
 255   address buffer2 = align_up((address)&lbuffer2[4], BytesPerLong);
 256   // do an aligned copy


 287 static void test_safefetchN() {
 288   if (CanUseSafeFetchN()) {
 289 #ifdef _LP64
 290     const intptr_t v1 = UCONST64(0xABCD00000000ABCD);
 291     const intptr_t v2 = UCONST64(0xDEFD00000000DEFD);
 292 #else
 293     const intptr_t v1 = 0xABCDABCD;
 294     const intptr_t v2 = 0xDEFDDEFD;
 295 #endif
 296     intptr_t dummy = v1;
 297     intptr_t* const p_invalid = (intptr_t*) VMError::get_segfault_address();
 298     intptr_t* const p_valid = &dummy;
 299     intptr_t result_invalid = SafeFetchN(p_invalid, v2);
 300     assert(result_invalid == v2, "SafeFetchN error");
 301     intptr_t result_valid = SafeFetchN(p_valid, v2);
 302     assert(result_valid == v1, "SafeFetchN error");
 303   }
 304 }
 305 #endif
 306 
 307 void StubRoutines::initializeContinuationStubs() {
 308   if (_code3 == NULL) {
 309     ResourceMark rm;
 310     TraceTime timer("StubRoutines generation 3", TRACETIME_LOG(Info, startuptime));
 311     _code3 = BufferBlob::create("StubRoutines (3)", code_size2);
 312     if (_code3 == NULL) {
 313       vm_exit_out_of_memory(code_size2, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (3)");
 314     }
 315     CodeBuffer buffer(_code3);
 316     StubGenerator_generate(&buffer, 1);
 317     // When new stubs added we need to make sure there is some space left
 318     // to catch situation when we should increase size again.
 319     assert(code_size2 == 0 || buffer.insts_remaining() > 200, "increase code_size3");
 320   }
 321 }
 322 
 323 void StubRoutines::initialize2() {
 324   if (_code2 == NULL) {
 325     ResourceMark rm;
 326     TraceTime timer("StubRoutines generation 2", TRACETIME_LOG(Info, startuptime));
 327     _code2 = BufferBlob::create("StubRoutines (2)", code_size2);
 328     if (_code2 == NULL) {
 329       vm_exit_out_of_memory(code_size2, OOM_MALLOC_ERROR, "CodeCache: no room for StubRoutines (2)");
 330     }
 331     CodeBuffer buffer(_code2);
 332     StubGenerator_generate(&buffer, 2);
 333     // When new stubs added we need to make sure there is some space left
 334     // to catch situation when we should increase size again.
 335     assert(code_size2 == 0 || buffer.insts_remaining() > 200, "increase code_size2");
 336   }
 337 
 338 #ifdef ASSERT
 339 
 340 #define TEST_ARRAYCOPY(type)                                                    \
 341   test_arraycopy_func(          type##_arraycopy(),          sizeof(type));     \
 342   test_arraycopy_func(          type##_disjoint_arraycopy(), sizeof(type));     \
 343   test_arraycopy_func(arrayof_##type##_arraycopy(),          sizeof(HeapWord)); \
 344   test_arraycopy_func(arrayof_##type##_disjoint_arraycopy(), sizeof(HeapWord))
 345 
 346   // Make sure all the arraycopy stubs properly handle zero count
 347   TEST_ARRAYCOPY(jbyte);
 348   TEST_ARRAYCOPY(jshort);
 349   TEST_ARRAYCOPY(jint);
 350   TEST_ARRAYCOPY(jlong);
 351 
 352 #undef TEST_ARRAYCOPY


 406   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::conjoint_words), sizeof(HeapWord));
 407   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words), sizeof(HeapWord));
 408   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::disjoint_words_atomic), sizeof(HeapWord));
 409   // Aligned to BytesPerLong
 410   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_conjoint_words), sizeof(jlong));
 411   test_arraycopy_func(CAST_FROM_FN_PTR(address, Copy::aligned_disjoint_words), sizeof(jlong));
 412 
 413   // test safefetch routines
 414   // Not on Windows 32bit until 8074860 is fixed
 415 #if ! (defined(_WIN32) && defined(_M_IX86))
 416   test_safefetch32();
 417   test_safefetchN();
 418 #endif
 419 
 420 #endif
 421 }
 422 
 423 
 424 void stubRoutines_init1() { StubRoutines::initialize1(); }
 425 void stubRoutines_init2() { StubRoutines::initialize2(); }
 426 void stubRoutines_initContinuationStubs() { StubRoutines::initializeContinuationStubs(); }
 427 
 428 //
 429 // Default versions of arraycopy functions
 430 //
 431 
 432 JRT_LEAF(void, StubRoutines::jbyte_copy(jbyte* src, jbyte* dest, size_t count))
 433 #ifndef PRODUCT
 434   SharedRuntime::_jbyte_array_copy_ctr++;      // Slow-path byte array copy
 435 #endif // !PRODUCT
 436   Copy::conjoint_jbytes_atomic(src, dest, count);
 437 JRT_END
 438 
 439 JRT_LEAF(void, StubRoutines::jshort_copy(jshort* src, jshort* dest, size_t count))
 440 #ifndef PRODUCT
 441   SharedRuntime::_jshort_array_copy_ctr++;     // Slow-path short/char array copy
 442 #endif // !PRODUCT
 443   Copy::conjoint_jshorts_atomic(src, dest, count);
 444 JRT_END
 445 
 446 JRT_LEAF(void, StubRoutines::jint_copy(jint* src, jint* dest, size_t count))


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