stubRoutines.hpp revision 7983:0ef1d0b2fc2e
1/* 2 * Copyright (c) 1997, 2015, 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#ifndef SHARE_VM_RUNTIME_STUBROUTINES_HPP 26#define SHARE_VM_RUNTIME_STUBROUTINES_HPP 27 28#include "code/codeBlob.hpp" 29#include "memory/allocation.hpp" 30#include "runtime/frame.hpp" 31#include "runtime/mutexLocker.hpp" 32#include "runtime/stubCodeGenerator.hpp" 33#include "utilities/top.hpp" 34 35// StubRoutines provides entry points to assembly routines used by 36// compiled code and the run-time system. Platform-specific entry 37// points are defined in the platform-specific inner class. 38// 39// Class scheme: 40// 41// platform-independent platform-dependent 42// 43// stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp 44// ^ ^ 45// | | 46// implements implements 47// | | 48// | | 49// stubRoutines.cpp stubRoutines_<arch>.cpp 50// stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp 51// stubRoutines_<os_arch>.cpp 52// 53// Note 1: The important thing is a clean decoupling between stub 54// entry points (interfacing to the whole vm; i.e., 1-to-n 55// relationship) and stub generators (interfacing only to 56// the entry points implementation; i.e., 1-to-1 relationship). 57// This significantly simplifies changes in the generator 58// structure since the rest of the vm is not affected. 59// 60// Note 2: stubGenerator_<arch>.cpp contains a minimal portion of 61// machine-independent code; namely the generator calls of 62// the generator functions that are used platform-independently. 63// However, it comes with the advantage of having a 1-file 64// implementation of the generator. It should be fairly easy 65// to change, should it become a problem later. 66// 67// Scheme for adding a new entry point: 68// 69// 1. determine if it's a platform-dependent or independent entry point 70// a) if platform independent: make subsequent changes in the independent files 71// b) if platform dependent: make subsequent changes in the dependent files 72// 2. add a private instance variable holding the entry point address 73// 3. add a public accessor function to the instance variable 74// 4. implement the corresponding generator function in the platform-dependent 75// stubGenerator_<arch>.cpp file and call the function in generate_all() of that file 76 77 78class StubRoutines: AllStatic { 79 80 public: 81 enum platform_independent_constants { 82 max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups 83 }; 84 85 // Dependencies 86 friend class StubGenerator; 87#if defined STUBROUTINES_MD_HPP 88# include STUBROUTINES_MD_HPP 89#elif defined TARGET_ARCH_MODEL_x86_32 90# include "stubRoutines_x86_32.hpp" 91#elif defined TARGET_ARCH_MODEL_x86_64 92# include "stubRoutines_x86_64.hpp" 93#elif defined TARGET_ARCH_MODEL_sparc 94# include "stubRoutines_sparc.hpp" 95#elif defined TARGET_ARCH_MODEL_zero 96# include "stubRoutines_zero.hpp" 97#elif defined TARGET_ARCH_MODEL_ppc_64 98# include "stubRoutines_ppc_64.hpp" 99#elif defined TARGET_ARCH_MODEL_aarch64 100# include "stubRoutines_aarch64.hpp" 101#endif 102 103 static jint _verify_oop_count; 104 static address _verify_oop_subroutine_entry; 105 106 static address _call_stub_return_address; // the return PC, when returning to a call stub 107 static address _call_stub_entry; 108 static address _forward_exception_entry; 109 static address _catch_exception_entry; 110 static address _throw_AbstractMethodError_entry; 111 static address _throw_IncompatibleClassChangeError_entry; 112 static address _throw_NullPointerException_at_call_entry; 113 static address _throw_StackOverflowError_entry; 114 static address _handler_for_unsafe_access_entry; 115 116 static address _atomic_xchg_entry; 117 static address _atomic_xchg_ptr_entry; 118 static address _atomic_store_entry; 119 static address _atomic_store_ptr_entry; 120 static address _atomic_cmpxchg_entry; 121 static address _atomic_cmpxchg_ptr_entry; 122 static address _atomic_cmpxchg_byte_entry; 123 static address _atomic_cmpxchg_long_entry; 124 static address _atomic_add_entry; 125 static address _atomic_add_ptr_entry; 126 static address _fence_entry; 127 static address _d2i_wrapper; 128 static address _d2l_wrapper; 129 130 static jint _fpu_cntrl_wrd_std; 131 static jint _fpu_cntrl_wrd_24; 132 static jint _fpu_cntrl_wrd_64; 133 static jint _fpu_cntrl_wrd_trunc; 134 static jint _mxcsr_std; 135 static jint _fpu_subnormal_bias1[3]; 136 static jint _fpu_subnormal_bias2[3]; 137 138 static BufferBlob* _code1; // code buffer for initial routines 139 static BufferBlob* _code2; // code buffer for all other routines 140 141 // Leaf routines which implement arraycopy and their addresses 142 // arraycopy operands aligned on element type boundary 143 static address _jbyte_arraycopy; 144 static address _jshort_arraycopy; 145 static address _jint_arraycopy; 146 static address _jlong_arraycopy; 147 static address _oop_arraycopy, _oop_arraycopy_uninit; 148 static address _jbyte_disjoint_arraycopy; 149 static address _jshort_disjoint_arraycopy; 150 static address _jint_disjoint_arraycopy; 151 static address _jlong_disjoint_arraycopy; 152 static address _oop_disjoint_arraycopy, _oop_disjoint_arraycopy_uninit; 153 154 // arraycopy operands aligned on zero'th element boundary 155 // These are identical to the ones aligned aligned on an 156 // element type boundary, except that they assume that both 157 // source and destination are HeapWord aligned. 158 static address _arrayof_jbyte_arraycopy; 159 static address _arrayof_jshort_arraycopy; 160 static address _arrayof_jint_arraycopy; 161 static address _arrayof_jlong_arraycopy; 162 static address _arrayof_oop_arraycopy, _arrayof_oop_arraycopy_uninit; 163 static address _arrayof_jbyte_disjoint_arraycopy; 164 static address _arrayof_jshort_disjoint_arraycopy; 165 static address _arrayof_jint_disjoint_arraycopy; 166 static address _arrayof_jlong_disjoint_arraycopy; 167 static address _arrayof_oop_disjoint_arraycopy, _arrayof_oop_disjoint_arraycopy_uninit; 168 169 // these are recommended but optional: 170 static address _checkcast_arraycopy, _checkcast_arraycopy_uninit; 171 static address _unsafe_arraycopy; 172 static address _generic_arraycopy; 173 174 static address _jbyte_fill; 175 static address _jshort_fill; 176 static address _jint_fill; 177 static address _arrayof_jbyte_fill; 178 static address _arrayof_jshort_fill; 179 static address _arrayof_jint_fill; 180 181 // zero heap space aligned to jlong (8 bytes) 182 static address _zero_aligned_words; 183 184 static address _aescrypt_encryptBlock; 185 static address _aescrypt_decryptBlock; 186 static address _cipherBlockChaining_encryptAESCrypt; 187 static address _cipherBlockChaining_decryptAESCrypt; 188 189 static address _sha1_implCompress; 190 static address _sha1_implCompressMB; 191 static address _sha256_implCompress; 192 static address _sha256_implCompressMB; 193 static address _sha512_implCompress; 194 static address _sha512_implCompressMB; 195 196 static address _updateBytesCRC32; 197 static address _crc_table_adr; 198 199 static address _multiplyToLen; 200 201 // These are versions of the java.lang.Math methods which perform 202 // the same operations as the intrinsic version. They are used for 203 // constant folding in the compiler to ensure equivalence. If the 204 // intrinsic version returns the same result as the strict version 205 // then they can be set to the appropriate function from 206 // SharedRuntime. 207 static double (*_intrinsic_log)(double); 208 static double (*_intrinsic_log10)(double); 209 static double (*_intrinsic_exp)(double); 210 static double (*_intrinsic_pow)(double, double); 211 static double (*_intrinsic_sin)(double); 212 static double (*_intrinsic_cos)(double); 213 static double (*_intrinsic_tan)(double); 214 215 // Safefetch stubs. 216 static address _safefetch32_entry; 217 static address _safefetch32_fault_pc; 218 static address _safefetch32_continuation_pc; 219 static address _safefetchN_entry; 220 static address _safefetchN_fault_pc; 221 static address _safefetchN_continuation_pc; 222 223 public: 224 // Initialization/Testing 225 static void initialize1(); // must happen before universe::genesis 226 static void initialize2(); // must happen after universe::genesis 227 228 static bool is_stub_code(address addr) { return contains(addr); } 229 230 static bool contains(address addr) { 231 return 232 (_code1 != NULL && _code1->blob_contains(addr)) || 233 (_code2 != NULL && _code2->blob_contains(addr)) ; 234 } 235 236 static CodeBlob* code1() { return _code1; } 237 static CodeBlob* code2() { return _code2; } 238 239 // Debugging 240 static jint verify_oop_count() { return _verify_oop_count; } 241 static jint* verify_oop_count_addr() { return &_verify_oop_count; } 242 // a subroutine for debugging the GC 243 static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; } 244 245 static address catch_exception_entry() { return _catch_exception_entry; } 246 247 // Calls to Java 248 typedef void (*CallStub)( 249 address link, 250 intptr_t* result, 251 BasicType result_type, 252 Method* method, 253 address entry_point, 254 intptr_t* parameters, 255 int size_of_parameters, 256 TRAPS 257 ); 258 259 static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); } 260 261 // Exceptions 262 static address forward_exception_entry() { return _forward_exception_entry; } 263 // Implicit exceptions 264 static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; } 265 static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; } 266 static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; } 267 static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } 268 269 // Exceptions during unsafe access - should throw Java exception rather 270 // than crash. 271 static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; } 272 273 static address atomic_xchg_entry() { return _atomic_xchg_entry; } 274 static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; } 275 static address atomic_store_entry() { return _atomic_store_entry; } 276 static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; } 277 static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; } 278 static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; } 279 static address atomic_cmpxchg_byte_entry() { return _atomic_cmpxchg_byte_entry; } 280 static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; } 281 static address atomic_add_entry() { return _atomic_add_entry; } 282 static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; } 283 static address fence_entry() { return _fence_entry; } 284 285 static address d2i_wrapper() { return _d2i_wrapper; } 286 static address d2l_wrapper() { return _d2l_wrapper; } 287 static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; } 288 static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; } 289 static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; } 290 static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; } 291 static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; } 292 static address addr_mxcsr_std() { return (address)&_mxcsr_std; } 293 static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; } 294 static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; } 295 296 297 static address select_arraycopy_function(BasicType t, bool aligned, bool disjoint, const char* &name, bool dest_uninitialized); 298 299 static address jbyte_arraycopy() { return _jbyte_arraycopy; } 300 static address jshort_arraycopy() { return _jshort_arraycopy; } 301 static address jint_arraycopy() { return _jint_arraycopy; } 302 static address jlong_arraycopy() { return _jlong_arraycopy; } 303 static address oop_arraycopy(bool dest_uninitialized = false) { 304 return dest_uninitialized ? _oop_arraycopy_uninit : _oop_arraycopy; 305 } 306 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; } 307 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; } 308 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; } 309 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; } 310 static address oop_disjoint_arraycopy(bool dest_uninitialized = false) { 311 return dest_uninitialized ? _oop_disjoint_arraycopy_uninit : _oop_disjoint_arraycopy; 312 } 313 314 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; } 315 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; } 316 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; } 317 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; } 318 static address arrayof_oop_arraycopy(bool dest_uninitialized = false) { 319 return dest_uninitialized ? _arrayof_oop_arraycopy_uninit : _arrayof_oop_arraycopy; 320 } 321 322 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; } 323 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; } 324 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; } 325 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; } 326 static address arrayof_oop_disjoint_arraycopy(bool dest_uninitialized = false) { 327 return dest_uninitialized ? _arrayof_oop_disjoint_arraycopy_uninit : _arrayof_oop_disjoint_arraycopy; 328 } 329 330 static address checkcast_arraycopy(bool dest_uninitialized = false) { 331 return dest_uninitialized ? _checkcast_arraycopy_uninit : _checkcast_arraycopy; 332 } 333 static address unsafe_arraycopy() { return _unsafe_arraycopy; } 334 static address generic_arraycopy() { return _generic_arraycopy; } 335 336 static address jbyte_fill() { return _jbyte_fill; } 337 static address jshort_fill() { return _jshort_fill; } 338 static address jint_fill() { return _jint_fill; } 339 static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; } 340 static address arrayof_jshort_fill() { return _arrayof_jshort_fill; } 341 static address arrayof_jint_fill() { return _arrayof_jint_fill; } 342 343 static address aescrypt_encryptBlock() { return _aescrypt_encryptBlock; } 344 static address aescrypt_decryptBlock() { return _aescrypt_decryptBlock; } 345 static address cipherBlockChaining_encryptAESCrypt() { return _cipherBlockChaining_encryptAESCrypt; } 346 static address cipherBlockChaining_decryptAESCrypt() { return _cipherBlockChaining_decryptAESCrypt; } 347 348 static address sha1_implCompress() { return _sha1_implCompress; } 349 static address sha1_implCompressMB() { return _sha1_implCompressMB; } 350 static address sha256_implCompress() { return _sha256_implCompress; } 351 static address sha256_implCompressMB() { return _sha256_implCompressMB; } 352 static address sha512_implCompress() { return _sha512_implCompress; } 353 static address sha512_implCompressMB() { return _sha512_implCompressMB; } 354 355 static address updateBytesCRC32() { return _updateBytesCRC32; } 356 static address crc_table_addr() { return _crc_table_adr; } 357 358 static address multiplyToLen() {return _multiplyToLen; } 359 360 static address select_fill_function(BasicType t, bool aligned, const char* &name); 361 362 static address zero_aligned_words() { return _zero_aligned_words; } 363 364 static double intrinsic_log(double d) { 365 assert(_intrinsic_log != NULL, "must be defined"); 366 return _intrinsic_log(d); 367 } 368 static double intrinsic_log10(double d) { 369 assert(_intrinsic_log != NULL, "must be defined"); 370 return _intrinsic_log10(d); 371 } 372 static double intrinsic_exp(double d) { 373 assert(_intrinsic_exp != NULL, "must be defined"); 374 return _intrinsic_exp(d); 375 } 376 static double intrinsic_pow(double d, double d2) { 377 assert(_intrinsic_pow != NULL, "must be defined"); 378 return _intrinsic_pow(d, d2); 379 } 380 static double intrinsic_sin(double d) { 381 assert(_intrinsic_sin != NULL, "must be defined"); 382 return _intrinsic_sin(d); 383 } 384 static double intrinsic_cos(double d) { 385 assert(_intrinsic_cos != NULL, "must be defined"); 386 return _intrinsic_cos(d); 387 } 388 static double intrinsic_tan(double d) { 389 assert(_intrinsic_tan != NULL, "must be defined"); 390 return _intrinsic_tan(d); 391 } 392 393 // 394 // Safefetch stub support 395 // 396 397 typedef int (*SafeFetch32Stub)(int* adr, int errValue); 398 typedef intptr_t (*SafeFetchNStub) (intptr_t* adr, intptr_t errValue); 399 400 static SafeFetch32Stub SafeFetch32_stub() { return CAST_TO_FN_PTR(SafeFetch32Stub, _safefetch32_entry); } 401 static SafeFetchNStub SafeFetchN_stub() { return CAST_TO_FN_PTR(SafeFetchNStub, _safefetchN_entry); } 402 403 static bool is_safefetch_fault(address pc) { 404 return pc != NULL && 405 (pc == _safefetch32_fault_pc || 406 pc == _safefetchN_fault_pc); 407 } 408 409 static address continuation_for_safefetch_fault(address pc) { 410 assert(_safefetch32_continuation_pc != NULL && 411 _safefetchN_continuation_pc != NULL, 412 "not initialized"); 413 414 if (pc == _safefetch32_fault_pc) return _safefetch32_continuation_pc; 415 if (pc == _safefetchN_fault_pc) return _safefetchN_continuation_pc; 416 417 ShouldNotReachHere(); 418 return NULL; 419 } 420 421 // 422 // Default versions of the above arraycopy functions for platforms which do 423 // not have specialized versions 424 // 425 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); 426 static void jshort_copy (jshort* src, jshort* dest, size_t count); 427 static void jint_copy (jint* src, jint* dest, size_t count); 428 static void jlong_copy (jlong* src, jlong* dest, size_t count); 429 static void oop_copy (oop* src, oop* dest, size_t count); 430 static void oop_copy_uninit(oop* src, oop* dest, size_t count); 431 432 static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count); 433 static void arrayof_jshort_copy (HeapWord* src, HeapWord* dest, size_t count); 434 static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count); 435 static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count); 436 static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count); 437 static void arrayof_oop_copy_uninit(HeapWord* src, HeapWord* dest, size_t count); 438}; 439 440// Safefetch allows to load a value from a location that's not known 441// to be valid. If the load causes a fault, the error value is returned. 442inline int SafeFetch32(int* adr, int errValue) { 443 assert(StubRoutines::SafeFetch32_stub(), "stub not yet generated"); 444 return StubRoutines::SafeFetch32_stub()(adr, errValue); 445} 446inline intptr_t SafeFetchN(intptr_t* adr, intptr_t errValue) { 447 assert(StubRoutines::SafeFetchN_stub(), "stub not yet generated"); 448 return StubRoutines::SafeFetchN_stub()(adr, errValue); 449} 450 451#endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP 452