1 /* 2 * Copyright (c) 1997, 2010, 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 #ifdef TARGET_ARCH_x86 35 # include "nativeInst_x86.hpp" 36 #endif 37 #ifdef TARGET_ARCH_sparc 38 # include "nativeInst_sparc.hpp" 39 #endif 40 #ifdef TARGET_ARCH_zero 41 # include "nativeInst_zero.hpp" 42 #endif 43 44 // StubRoutines provides entry points to assembly routines used by 45 // compiled code and the run-time system. Platform-specific entry 46 // points are defined in the platform-specific inner class. 47 // 48 // Class scheme: 49 // 50 // platform-independent platform-dependent 51 // 52 // stubRoutines.hpp <-- included -- stubRoutines_<arch>.hpp 53 // ^ ^ 54 // | | 55 // implements implements 56 // | | 57 // | | 58 // stubRoutines.cpp stubRoutines_<arch>.cpp 59 // stubRoutines_<os_family>.cpp stubGenerator_<arch>.cpp 60 // stubRoutines_<os_arch>.cpp 61 // 62 // Note 1: The important thing is a clean decoupling between stub 63 // entry points (interfacing to the whole vm; i.e., 1-to-n 64 // relationship) and stub generators (interfacing only to 65 // the entry points implementation; i.e., 1-to-1 relationship). 66 // This significantly simplifies changes in the generator 67 // structure since the rest of the vm is not affected. 68 // 69 // Note 2: stubGenerator_<arch>.cpp contains a minimal portion of 70 // machine-independent code; namely the generator calls of 71 // the generator functions that are used platform-independently. 72 // However, it comes with the advantage of having a 1-file 73 // implementation of the generator. It should be fairly easy 74 // to change, should it become a problem later. 75 // 76 // Scheme for adding a new entry point: 77 // 78 // 1. determine if it's a platform-dependent or independent entry point 79 // a) if platform independent: make subsequent changes in the independent files 80 // b) if platform dependent: make subsequent changes in the dependent files 81 // 2. add a private instance variable holding the entry point address 82 // 3. add a public accessor function to the instance variable 83 // 4. implement the corresponding generator function in the platform-dependent 84 // stubGenerator_<arch>.cpp file and call the function in generate_all() of that file 85 86 87 class StubRoutines: AllStatic { 88 89 public: 90 enum platform_independent_constants { 91 max_size_of_parameters = 256 // max. parameter size supported by megamorphic lookups 92 }; 93 94 // Dependencies 95 friend class StubGenerator; 96 #ifdef TARGET_ARCH_MODEL_x86_32 97 # include "stubRoutines_x86_32.hpp" 98 #endif 99 #ifdef TARGET_ARCH_MODEL_x86_64 100 # include "stubRoutines_x86_64.hpp" 101 #endif 102 #ifdef TARGET_ARCH_MODEL_sparc 103 # include "stubRoutines_sparc.hpp" 104 #endif 105 #ifdef TARGET_ARCH_MODEL_zero 106 # include "stubRoutines_zero.hpp" 107 #endif 108 109 110 static jint _verify_oop_count; 111 static address _verify_oop_subroutine_entry; 112 113 static address _call_stub_return_address; // the return PC, when returning to a call stub 114 static address _call_stub_entry; 115 static address _forward_exception_entry; 116 static address _catch_exception_entry; 117 static address _throw_AbstractMethodError_entry; 118 static address _throw_IncompatibleClassChangeError_entry; 119 static address _throw_ArithmeticException_entry; 120 static address _throw_NullPointerException_entry; 121 static address _throw_NullPointerException_at_call_entry; 122 static address _throw_StackOverflowError_entry; 123 static address _handler_for_unsafe_access_entry; 124 125 static address _atomic_xchg_entry; 126 static address _atomic_xchg_ptr_entry; 127 static address _atomic_store_entry; 128 static address _atomic_store_ptr_entry; 129 static address _atomic_cmpxchg_entry; 130 static address _atomic_cmpxchg_ptr_entry; 131 static address _atomic_cmpxchg_long_entry; 132 static address _atomic_add_entry; 133 static address _atomic_add_ptr_entry; 134 static address _fence_entry; 135 static address _d2i_wrapper; 136 static address _d2l_wrapper; 137 138 static jint _fpu_cntrl_wrd_std; 139 static jint _fpu_cntrl_wrd_24; 140 static jint _fpu_cntrl_wrd_64; 141 static jint _fpu_cntrl_wrd_trunc; 142 static jint _mxcsr_std; 143 static jint _fpu_subnormal_bias1[3]; 144 static jint _fpu_subnormal_bias2[3]; 145 146 static BufferBlob* _code1; // code buffer for initial routines 147 static BufferBlob* _code2; // code buffer for all other routines 148 149 // Leaf routines which implement arraycopy and their addresses 150 // arraycopy operands aligned on element type boundary 151 static address _jbyte_arraycopy; 152 static address _jshort_arraycopy; 153 static address _jint_arraycopy; 154 static address _jlong_arraycopy; 155 static address _oop_arraycopy; 156 static address _jbyte_disjoint_arraycopy; 157 static address _jshort_disjoint_arraycopy; 158 static address _jint_disjoint_arraycopy; 159 static address _jlong_disjoint_arraycopy; 160 static address _oop_disjoint_arraycopy; 161 162 // arraycopy operands aligned on zero'th element boundary 163 // These are identical to the ones aligned aligned on an 164 // element type boundary, except that they assume that both 165 // source and destination are HeapWord aligned. 166 static address _arrayof_jbyte_arraycopy; 167 static address _arrayof_jshort_arraycopy; 168 static address _arrayof_jint_arraycopy; 169 static address _arrayof_jlong_arraycopy; 170 static address _arrayof_oop_arraycopy; 171 static address _arrayof_jbyte_disjoint_arraycopy; 172 static address _arrayof_jshort_disjoint_arraycopy; 173 static address _arrayof_jint_disjoint_arraycopy; 174 static address _arrayof_jlong_disjoint_arraycopy; 175 static address _arrayof_oop_disjoint_arraycopy; 176 177 // these are recommended but optional: 178 static address _checkcast_arraycopy; 179 static address _unsafe_arraycopy; 180 static address _generic_arraycopy; 181 182 static address _jbyte_fill; 183 static address _jshort_fill; 184 static address _jint_fill; 185 static address _arrayof_jbyte_fill; 186 static address _arrayof_jshort_fill; 187 static address _arrayof_jint_fill; 188 189 // These are versions of the java.lang.Math methods which perform 190 // the same operations as the intrinsic version. They are used for 191 // constant folding in the compiler to ensure equivalence. If the 192 // intrinsic version returns the same result as the strict version 193 // then they can be set to the appropriate function from 194 // SharedRuntime. 195 static double (*_intrinsic_log)(double); 196 static double (*_intrinsic_log10)(double); 197 static double (*_intrinsic_exp)(double); 198 static double (*_intrinsic_pow)(double, double); 199 static double (*_intrinsic_sin)(double); 200 static double (*_intrinsic_cos)(double); 201 static double (*_intrinsic_tan)(double); 202 203 public: 204 // Initialization/Testing 205 static void initialize1(); // must happen before universe::genesis 206 static void initialize2(); // must happen after universe::genesis 207 208 static bool contains(address addr) { 209 return 210 (_code1 != NULL && _code1->blob_contains(addr)) || 211 (_code2 != NULL && _code2->blob_contains(addr)) ; 212 } 213 214 // Debugging 215 static jint verify_oop_count() { return _verify_oop_count; } 216 static jint* verify_oop_count_addr() { return &_verify_oop_count; } 217 // a subroutine for debugging the GC 218 static address verify_oop_subroutine_entry_address() { return (address)&_verify_oop_subroutine_entry; } 219 220 static address catch_exception_entry() { return _catch_exception_entry; } 221 222 // Calls to Java 223 typedef void (*CallStub)( 224 address link, 225 intptr_t* result, 226 BasicType result_type, 227 methodOopDesc* method, 228 address entry_point, 229 intptr_t* parameters, 230 int size_of_parameters, 231 TRAPS 232 ); 233 234 static CallStub call_stub() { return CAST_TO_FN_PTR(CallStub, _call_stub_entry); } 235 236 // Exceptions 237 static address forward_exception_entry() { return _forward_exception_entry; } 238 // Implicit exceptions 239 static address throw_AbstractMethodError_entry() { return _throw_AbstractMethodError_entry; } 240 static address throw_IncompatibleClassChangeError_entry(){ return _throw_IncompatibleClassChangeError_entry; } 241 static address throw_ArithmeticException_entry() { return _throw_ArithmeticException_entry; } 242 static address throw_NullPointerException_entry() { return _throw_NullPointerException_entry; } 243 static address throw_NullPointerException_at_call_entry(){ return _throw_NullPointerException_at_call_entry; } 244 static address throw_StackOverflowError_entry() { return _throw_StackOverflowError_entry; } 245 246 // Exceptions during unsafe access - should throw Java exception rather 247 // than crash. 248 static address handler_for_unsafe_access() { return _handler_for_unsafe_access_entry; } 249 250 static address atomic_xchg_entry() { return _atomic_xchg_entry; } 251 static address atomic_xchg_ptr_entry() { return _atomic_xchg_ptr_entry; } 252 static address atomic_store_entry() { return _atomic_store_entry; } 253 static address atomic_store_ptr_entry() { return _atomic_store_ptr_entry; } 254 static address atomic_cmpxchg_entry() { return _atomic_cmpxchg_entry; } 255 static address atomic_cmpxchg_ptr_entry() { return _atomic_cmpxchg_ptr_entry; } 256 static address atomic_cmpxchg_long_entry() { return _atomic_cmpxchg_long_entry; } 257 static address atomic_add_entry() { return _atomic_add_entry; } 258 static address atomic_add_ptr_entry() { return _atomic_add_ptr_entry; } 259 static address fence_entry() { return _fence_entry; } 260 261 static address d2i_wrapper() { return _d2i_wrapper; } 262 static address d2l_wrapper() { return _d2l_wrapper; } 263 static jint fpu_cntrl_wrd_std() { return _fpu_cntrl_wrd_std; } 264 static address addr_fpu_cntrl_wrd_std() { return (address)&_fpu_cntrl_wrd_std; } 265 static address addr_fpu_cntrl_wrd_24() { return (address)&_fpu_cntrl_wrd_24; } 266 static address addr_fpu_cntrl_wrd_64() { return (address)&_fpu_cntrl_wrd_64; } 267 static address addr_fpu_cntrl_wrd_trunc() { return (address)&_fpu_cntrl_wrd_trunc; } 268 static address addr_mxcsr_std() { return (address)&_mxcsr_std; } 269 static address addr_fpu_subnormal_bias1() { return (address)&_fpu_subnormal_bias1; } 270 static address addr_fpu_subnormal_bias2() { return (address)&_fpu_subnormal_bias2; } 271 272 273 static address jbyte_arraycopy() { return _jbyte_arraycopy; } 274 static address jshort_arraycopy() { return _jshort_arraycopy; } 275 static address jint_arraycopy() { return _jint_arraycopy; } 276 static address jlong_arraycopy() { return _jlong_arraycopy; } 277 static address oop_arraycopy() { return _oop_arraycopy; } 278 static address jbyte_disjoint_arraycopy() { return _jbyte_disjoint_arraycopy; } 279 static address jshort_disjoint_arraycopy() { return _jshort_disjoint_arraycopy; } 280 static address jint_disjoint_arraycopy() { return _jint_disjoint_arraycopy; } 281 static address jlong_disjoint_arraycopy() { return _jlong_disjoint_arraycopy; } 282 static address oop_disjoint_arraycopy() { return _oop_disjoint_arraycopy; } 283 284 static address arrayof_jbyte_arraycopy() { return _arrayof_jbyte_arraycopy; } 285 static address arrayof_jshort_arraycopy() { return _arrayof_jshort_arraycopy; } 286 static address arrayof_jint_arraycopy() { return _arrayof_jint_arraycopy; } 287 static address arrayof_jlong_arraycopy() { return _arrayof_jlong_arraycopy; } 288 static address arrayof_oop_arraycopy() { return _arrayof_oop_arraycopy; } 289 290 static address arrayof_jbyte_disjoint_arraycopy() { return _arrayof_jbyte_disjoint_arraycopy; } 291 static address arrayof_jshort_disjoint_arraycopy() { return _arrayof_jshort_disjoint_arraycopy; } 292 static address arrayof_jint_disjoint_arraycopy() { return _arrayof_jint_disjoint_arraycopy; } 293 static address arrayof_jlong_disjoint_arraycopy() { return _arrayof_jlong_disjoint_arraycopy; } 294 static address arrayof_oop_disjoint_arraycopy() { return _arrayof_oop_disjoint_arraycopy; } 295 296 static address checkcast_arraycopy() { return _checkcast_arraycopy; } 297 static address unsafe_arraycopy() { return _unsafe_arraycopy; } 298 static address generic_arraycopy() { return _generic_arraycopy; } 299 300 static address jbyte_fill() { return _jbyte_fill; } 301 static address jshort_fill() { return _jshort_fill; } 302 static address jint_fill() { return _jint_fill; } 303 static address arrayof_jbyte_fill() { return _arrayof_jbyte_fill; } 304 static address arrayof_jshort_fill() { return _arrayof_jshort_fill; } 305 static address arrayof_jint_fill() { return _arrayof_jint_fill; } 306 307 static address select_fill_function(BasicType t, bool aligned, const char* &name); 308 309 310 static double intrinsic_log(double d) { 311 assert(_intrinsic_log != NULL, "must be defined"); 312 return _intrinsic_log(d); 313 } 314 static double intrinsic_log10(double d) { 315 assert(_intrinsic_log != NULL, "must be defined"); 316 return _intrinsic_log10(d); 317 } 318 static double intrinsic_exp(double d) { 319 assert(_intrinsic_exp != NULL, "must be defined"); 320 return _intrinsic_exp(d); 321 } 322 static double intrinsic_pow(double d, double d2) { 323 assert(_intrinsic_pow != NULL, "must be defined"); 324 return _intrinsic_pow(d, d2); 325 } 326 static double intrinsic_sin(double d) { 327 assert(_intrinsic_sin != NULL, "must be defined"); 328 return _intrinsic_sin(d); 329 } 330 static double intrinsic_cos(double d) { 331 assert(_intrinsic_cos != NULL, "must be defined"); 332 return _intrinsic_cos(d); 333 } 334 static double intrinsic_tan(double d) { 335 assert(_intrinsic_tan != NULL, "must be defined"); 336 return _intrinsic_tan(d); 337 } 338 339 // 340 // Default versions of the above arraycopy functions for platforms which do 341 // not have specialized versions 342 // 343 static void jbyte_copy (jbyte* src, jbyte* dest, size_t count); 344 static void jshort_copy(jshort* src, jshort* dest, size_t count); 345 static void jint_copy (jint* src, jint* dest, size_t count); 346 static void jlong_copy (jlong* src, jlong* dest, size_t count); 347 static void oop_copy (oop* src, oop* dest, size_t count); 348 349 static void arrayof_jbyte_copy (HeapWord* src, HeapWord* dest, size_t count); 350 static void arrayof_jshort_copy(HeapWord* src, HeapWord* dest, size_t count); 351 static void arrayof_jint_copy (HeapWord* src, HeapWord* dest, size_t count); 352 static void arrayof_jlong_copy (HeapWord* src, HeapWord* dest, size_t count); 353 static void arrayof_oop_copy (HeapWord* src, HeapWord* dest, size_t count); 354 }; 355 356 #endif // SHARE_VM_RUNTIME_STUBROUTINES_HPP