Mercurial > hg > truffle
annotate src/cpu/x86/vm/templateTable_x86_64.cpp @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | feeb96a45707 37f87013dfd8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2003-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "incls/_precompiled.incl" | |
| 26 #include "incls/_templateTable_x86_64.cpp.incl" | |
| 27 | |
| 28 #define __ _masm-> | |
| 29 | |
| 30 // Platform-dependent initialization | |
| 31 | |
| 32 void TemplateTable::pd_initialize() { | |
| 33 // No amd64 specific initialization | |
| 34 } | |
| 35 | |
| 36 // Address computation: local variables | |
| 37 | |
| 38 static inline Address iaddress(int n) { | |
| 39 return Address(r14, Interpreter::local_offset_in_bytes(n)); | |
| 40 } | |
| 41 | |
| 42 static inline Address laddress(int n) { | |
| 43 return iaddress(n + 1); | |
| 44 } | |
| 45 | |
| 46 static inline Address faddress(int n) { | |
| 47 return iaddress(n); | |
| 48 } | |
| 49 | |
| 50 static inline Address daddress(int n) { | |
| 51 return laddress(n); | |
| 52 } | |
| 53 | |
| 54 static inline Address aaddress(int n) { | |
| 55 return iaddress(n); | |
| 56 } | |
| 57 | |
| 58 static inline Address iaddress(Register r) { | |
| 59 return Address(r14, r, Address::times_8, Interpreter::value_offset_in_bytes()); | |
| 60 } | |
| 61 | |
| 62 static inline Address laddress(Register r) { | |
| 63 return Address(r14, r, Address::times_8, Interpreter::local_offset_in_bytes(1)); | |
| 64 } | |
| 65 | |
| 66 static inline Address faddress(Register r) { | |
| 67 return iaddress(r); | |
| 68 } | |
| 69 | |
| 70 static inline Address daddress(Register r) { | |
| 71 return laddress(r); | |
| 72 } | |
| 73 | |
| 74 static inline Address aaddress(Register r) { | |
| 75 return iaddress(r); | |
| 76 } | |
| 77 | |
| 78 static inline Address at_rsp() { | |
| 79 return Address(rsp, 0); | |
| 80 } | |
| 81 | |
| 82 // At top of Java expression stack which may be different than esp(). It | |
| 83 // isn't for category 1 objects. | |
| 84 static inline Address at_tos () { | |
| 85 return Address(rsp, Interpreter::expr_offset_in_bytes(0)); | |
| 86 } | |
| 87 | |
| 88 static inline Address at_tos_p1() { | |
| 89 return Address(rsp, Interpreter::expr_offset_in_bytes(1)); | |
| 90 } | |
| 91 | |
| 92 static inline Address at_tos_p2() { | |
| 93 return Address(rsp, Interpreter::expr_offset_in_bytes(2)); | |
| 94 } | |
| 95 | |
| 96 static inline Address at_tos_p3() { | |
| 97 return Address(rsp, Interpreter::expr_offset_in_bytes(3)); | |
| 98 } | |
| 99 | |
| 100 // Condition conversion | |
| 101 static Assembler::Condition j_not(TemplateTable::Condition cc) { | |
| 102 switch (cc) { | |
| 103 case TemplateTable::equal : return Assembler::notEqual; | |
| 104 case TemplateTable::not_equal : return Assembler::equal; | |
| 105 case TemplateTable::less : return Assembler::greaterEqual; | |
| 106 case TemplateTable::less_equal : return Assembler::greater; | |
| 107 case TemplateTable::greater : return Assembler::lessEqual; | |
| 108 case TemplateTable::greater_equal: return Assembler::less; | |
| 109 } | |
| 110 ShouldNotReachHere(); | |
| 111 return Assembler::zero; | |
| 112 } | |
| 113 | |
| 114 | |
| 115 // Miscelaneous helper routines | |
| 116 | |
| 117 Address TemplateTable::at_bcp(int offset) { | |
| 118 assert(_desc->uses_bcp(), "inconsistent uses_bcp information"); | |
| 119 return Address(r13, offset); | |
| 120 } | |
| 121 | |
| 122 void TemplateTable::patch_bytecode(Bytecodes::Code bytecode, Register bc, | |
| 123 Register scratch, | |
| 124 bool load_bc_into_scratch/*=true*/) { | |
| 125 if (!RewriteBytecodes) { | |
| 126 return; | |
| 127 } | |
| 128 // the pair bytecodes have already done the load. | |
| 129 if (load_bc_into_scratch) { | |
| 130 __ movl(bc, bytecode); | |
| 131 } | |
| 132 Label patch_done; | |
| 133 if (JvmtiExport::can_post_breakpoint()) { | |
| 134 Label fast_patch; | |
| 135 // if a breakpoint is present we can't rewrite the stream directly | |
| 136 __ movzbl(scratch, at_bcp(0)); | |
| 137 __ cmpl(scratch, Bytecodes::_breakpoint); | |
| 138 __ jcc(Assembler::notEqual, fast_patch); | |
| 139 __ get_method(scratch); | |
| 140 // Let breakpoint table handling rewrite to quicker bytecode | |
| 141 __ call_VM(noreg, | |
| 142 CAST_FROM_FN_PTR(address, | |
| 143 InterpreterRuntime::set_original_bytecode_at), | |
| 144 scratch, r13, bc); | |
| 145 #ifndef ASSERT | |
| 146 __ jmpb(patch_done); | |
| 147 __ bind(fast_patch); | |
| 148 } | |
| 149 #else | |
| 150 __ jmp(patch_done); | |
| 151 __ bind(fast_patch); | |
| 152 } | |
| 153 Label okay; | |
| 154 __ load_unsigned_byte(scratch, at_bcp(0)); | |
| 155 __ cmpl(scratch, (int) Bytecodes::java_code(bytecode)); | |
| 156 __ jcc(Assembler::equal, okay); | |
| 157 __ cmpl(scratch, bc); | |
| 158 __ jcc(Assembler::equal, okay); | |
| 159 __ stop("patching the wrong bytecode"); | |
| 160 __ bind(okay); | |
| 161 #endif | |
| 162 // patch bytecode | |
| 163 __ movb(at_bcp(0), bc); | |
| 164 __ bind(patch_done); | |
| 165 } | |
| 166 | |
| 167 | |
| 168 // Individual instructions | |
| 169 | |
| 170 void TemplateTable::nop() { | |
| 171 transition(vtos, vtos); | |
| 172 // nothing to do | |
| 173 } | |
| 174 | |
| 175 void TemplateTable::shouldnotreachhere() { | |
| 176 transition(vtos, vtos); | |
| 177 __ stop("shouldnotreachhere bytecode"); | |
| 178 } | |
| 179 | |
| 180 void TemplateTable::aconst_null() { | |
| 181 transition(vtos, atos); | |
| 182 __ xorl(rax, rax); | |
| 183 } | |
| 184 | |
| 185 void TemplateTable::iconst(int value) { | |
| 186 transition(vtos, itos); | |
| 187 if (value == 0) { | |
| 188 __ xorl(rax, rax); | |
| 189 } else { | |
| 190 __ movl(rax, value); | |
| 191 } | |
| 192 } | |
| 193 | |
| 194 void TemplateTable::lconst(int value) { | |
| 195 transition(vtos, ltos); | |
| 196 if (value == 0) { | |
| 197 __ xorl(rax, rax); | |
| 198 } else { | |
| 199 __ movl(rax, value); | |
| 200 } | |
| 201 } | |
| 202 | |
| 203 void TemplateTable::fconst(int value) { | |
| 204 transition(vtos, ftos); | |
| 205 static float one = 1.0f, two = 2.0f; | |
| 206 switch (value) { | |
| 207 case 0: | |
| 208 __ xorps(xmm0, xmm0); | |
| 209 break; | |
| 210 case 1: | |
| 211 __ movflt(xmm0, ExternalAddress((address) &one)); | |
| 212 break; | |
| 213 case 2: | |
| 214 __ movflt(xmm0, ExternalAddress((address) &two)); | |
| 215 break; | |
| 216 default: | |
| 217 ShouldNotReachHere(); | |
| 218 break; | |
| 219 } | |
| 220 } | |
| 221 | |
| 222 void TemplateTable::dconst(int value) { | |
| 223 transition(vtos, dtos); | |
| 224 static double one = 1.0; | |
| 225 switch (value) { | |
| 226 case 0: | |
| 227 __ xorpd(xmm0, xmm0); | |
| 228 break; | |
| 229 case 1: | |
| 230 __ movdbl(xmm0, ExternalAddress((address) &one)); | |
| 231 break; | |
| 232 default: | |
| 233 ShouldNotReachHere(); | |
| 234 break; | |
| 235 } | |
| 236 } | |
| 237 | |
| 238 void TemplateTable::bipush() { | |
| 239 transition(vtos, itos); | |
| 240 __ load_signed_byte(rax, at_bcp(1)); | |
| 241 } | |
| 242 | |
| 243 void TemplateTable::sipush() { | |
| 244 transition(vtos, itos); | |
| 245 __ load_unsigned_word(rax, at_bcp(1)); | |
| 246 __ bswapl(rax); | |
| 247 __ sarl(rax, 16); | |
| 248 } | |
| 249 | |
| 250 void TemplateTable::ldc(bool wide) { | |
| 251 transition(vtos, vtos); | |
| 252 Label call_ldc, notFloat, notClass, Done; | |
| 253 | |
| 254 if (wide) { | |
| 255 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
| 256 } else { | |
| 257 __ load_unsigned_byte(rbx, at_bcp(1)); | |
| 258 } | |
| 259 | |
| 260 __ get_cpool_and_tags(rcx, rax); | |
| 261 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
| 262 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
| 263 | |
| 264 // get type | |
| 265 __ movzbl(rdx, Address(rax, rbx, Address::times_1, tags_offset)); | |
| 266 | |
| 267 // unresolved string - get the resolved string | |
| 268 __ cmpl(rdx, JVM_CONSTANT_UnresolvedString); | |
| 269 __ jccb(Assembler::equal, call_ldc); | |
| 270 | |
| 271 // unresolved class - get the resolved class | |
| 272 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClass); | |
| 273 __ jccb(Assembler::equal, call_ldc); | |
| 274 | |
| 275 // unresolved class in error state - call into runtime to throw the error | |
| 276 // from the first resolution attempt | |
| 277 __ cmpl(rdx, JVM_CONSTANT_UnresolvedClassInError); | |
| 278 __ jccb(Assembler::equal, call_ldc); | |
| 279 | |
| 280 // resolved class - need to call vm to get java mirror of the class | |
| 281 __ cmpl(rdx, JVM_CONSTANT_Class); | |
| 282 __ jcc(Assembler::notEqual, notClass); | |
| 283 | |
| 284 __ bind(call_ldc); | |
| 285 __ movl(c_rarg1, wide); | |
| 286 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::ldc), c_rarg1); | |
| 287 __ push_ptr(rax); | |
| 288 __ verify_oop(rax); | |
| 289 __ jmp(Done); | |
| 290 | |
| 291 __ bind(notClass); | |
| 292 __ cmpl(rdx, JVM_CONSTANT_Float); | |
| 293 __ jccb(Assembler::notEqual, notFloat); | |
| 294 // ftos | |
| 295 __ movflt(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
| 296 __ push_f(); | |
| 297 __ jmp(Done); | |
| 298 | |
| 299 __ bind(notFloat); | |
| 300 #ifdef ASSERT | |
| 301 { | |
| 302 Label L; | |
| 303 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
| 304 __ jcc(Assembler::equal, L); | |
| 305 __ cmpl(rdx, JVM_CONSTANT_String); | |
| 306 __ jcc(Assembler::equal, L); | |
| 307 __ stop("unexpected tag type in ldc"); | |
| 308 __ bind(L); | |
| 309 } | |
| 310 #endif | |
| 311 // atos and itos | |
| 312 Label isOop; | |
| 313 __ cmpl(rdx, JVM_CONSTANT_Integer); | |
| 314 __ jcc(Assembler::notEqual, isOop); | |
| 315 __ movl(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
| 316 __ push_i(rax); | |
| 317 __ jmp(Done); | |
| 318 | |
| 319 __ bind(isOop); | |
| 320 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
| 321 __ push_ptr(rax); | |
| 322 | |
| 323 if (VerifyOops) { | |
| 324 __ verify_oop(rax); | |
| 325 } | |
| 326 | |
| 327 __ bind(Done); | |
| 328 } | |
| 329 | |
| 330 void TemplateTable::ldc2_w() { | |
| 331 transition(vtos, vtos); | |
| 332 Label Long, Done; | |
| 333 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); | |
| 334 | |
| 335 __ get_cpool_and_tags(rcx, rax); | |
| 336 const int base_offset = constantPoolOopDesc::header_size() * wordSize; | |
| 337 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
| 338 | |
| 339 // get type | |
| 340 __ cmpb(Address(rax, rbx, Address::times_1, tags_offset), | |
| 341 JVM_CONSTANT_Double); | |
| 342 __ jccb(Assembler::notEqual, Long); | |
| 343 // dtos | |
| 344 __ movdbl(xmm0, Address(rcx, rbx, Address::times_8, base_offset)); | |
| 345 __ push_d(); | |
| 346 __ jmpb(Done); | |
| 347 | |
| 348 __ bind(Long); | |
| 349 // ltos | |
| 350 __ movq(rax, Address(rcx, rbx, Address::times_8, base_offset)); | |
| 351 __ push_l(); | |
| 352 | |
| 353 __ bind(Done); | |
| 354 } | |
| 355 | |
| 356 void TemplateTable::locals_index(Register reg, int offset) { | |
| 357 __ load_unsigned_byte(reg, at_bcp(offset)); | |
| 358 __ negq(reg); | |
| 359 if (TaggedStackInterpreter) __ shlq(reg, 1); // index = index*2 | |
| 360 } | |
| 361 | |
| 362 void TemplateTable::iload() { | |
| 363 transition(vtos, itos); | |
| 364 if (RewriteFrequentPairs) { | |
| 365 Label rewrite, done; | |
| 366 const Register bc = c_rarg3; | |
| 367 assert(rbx != bc, "register damaged"); | |
| 368 | |
| 369 // get next byte | |
| 370 __ load_unsigned_byte(rbx, | |
| 371 at_bcp(Bytecodes::length_for(Bytecodes::_iload))); | |
| 372 // if _iload, wait to rewrite to iload2. We only want to rewrite the | |
| 373 // last two iloads in a pair. Comparing against fast_iload means that | |
| 374 // the next bytecode is neither an iload or a caload, and therefore | |
| 375 // an iload pair. | |
| 376 __ cmpl(rbx, Bytecodes::_iload); | |
| 377 __ jcc(Assembler::equal, done); | |
| 378 | |
| 379 __ cmpl(rbx, Bytecodes::_fast_iload); | |
| 380 __ movl(bc, Bytecodes::_fast_iload2); | |
| 381 __ jccb(Assembler::equal, rewrite); | |
| 382 | |
| 383 // if _caload, rewrite to fast_icaload | |
| 384 __ cmpl(rbx, Bytecodes::_caload); | |
| 385 __ movl(bc, Bytecodes::_fast_icaload); | |
| 386 __ jccb(Assembler::equal, rewrite); | |
| 387 | |
| 388 // rewrite so iload doesn't check again. | |
| 389 __ movl(bc, Bytecodes::_fast_iload); | |
| 390 | |
| 391 // rewrite | |
| 392 // bc: fast bytecode | |
| 393 __ bind(rewrite); | |
| 394 patch_bytecode(Bytecodes::_iload, bc, rbx, false); | |
| 395 __ bind(done); | |
| 396 } | |
| 397 | |
| 398 // Get the local value into tos | |
| 399 locals_index(rbx); | |
| 400 __ movl(rax, iaddress(rbx)); | |
| 401 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 402 } | |
| 403 | |
| 404 void TemplateTable::fast_iload2() { | |
| 405 transition(vtos, itos); | |
| 406 locals_index(rbx); | |
| 407 __ movl(rax, iaddress(rbx)); | |
| 408 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 409 __ push(itos); | |
| 410 locals_index(rbx, 3); | |
| 411 __ movl(rax, iaddress(rbx)); | |
| 412 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 413 } | |
| 414 | |
| 415 void TemplateTable::fast_iload() { | |
| 416 transition(vtos, itos); | |
| 417 locals_index(rbx); | |
| 418 __ movl(rax, iaddress(rbx)); | |
| 419 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 420 } | |
| 421 | |
| 422 void TemplateTable::lload() { | |
| 423 transition(vtos, ltos); | |
| 424 locals_index(rbx); | |
| 425 __ movq(rax, laddress(rbx)); | |
| 426 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
| 427 } | |
| 428 | |
| 429 void TemplateTable::fload() { | |
| 430 transition(vtos, ftos); | |
| 431 locals_index(rbx); | |
| 432 __ movflt(xmm0, faddress(rbx)); | |
| 433 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 434 } | |
| 435 | |
| 436 void TemplateTable::dload() { | |
| 437 transition(vtos, dtos); | |
| 438 locals_index(rbx); | |
| 439 __ movdbl(xmm0, daddress(rbx)); | |
| 440 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
| 441 } | |
| 442 | |
| 443 void TemplateTable::aload() { | |
| 444 transition(vtos, atos); | |
| 445 locals_index(rbx); | |
| 446 __ movq(rax, aaddress(rbx)); | |
| 447 debug_only(__ verify_local_tag(frame::TagReference, rbx)); | |
| 448 } | |
| 449 | |
| 450 void TemplateTable::locals_index_wide(Register reg) { | |
| 451 __ movl(reg, at_bcp(2)); | |
| 452 __ bswapl(reg); | |
| 453 __ shrl(reg, 16); | |
| 454 __ negq(reg); | |
| 455 if (TaggedStackInterpreter) __ shlq(reg, 1); // index = index*2 | |
| 456 } | |
| 457 | |
| 458 void TemplateTable::wide_iload() { | |
| 459 transition(vtos, itos); | |
| 460 locals_index_wide(rbx); | |
| 461 __ movl(rax, iaddress(rbx)); | |
| 462 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 463 } | |
| 464 | |
| 465 void TemplateTable::wide_lload() { | |
| 466 transition(vtos, ltos); | |
| 467 locals_index_wide(rbx); | |
| 468 __ movq(rax, laddress(rbx)); | |
| 469 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
| 470 } | |
| 471 | |
| 472 void TemplateTable::wide_fload() { | |
| 473 transition(vtos, ftos); | |
| 474 locals_index_wide(rbx); | |
| 475 __ movflt(xmm0, faddress(rbx)); | |
| 476 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 477 } | |
| 478 | |
| 479 void TemplateTable::wide_dload() { | |
| 480 transition(vtos, dtos); | |
| 481 locals_index_wide(rbx); | |
| 482 __ movdbl(xmm0, daddress(rbx)); | |
| 483 debug_only(__ verify_local_tag(frame::TagCategory2, rbx)); | |
| 484 } | |
| 485 | |
| 486 void TemplateTable::wide_aload() { | |
| 487 transition(vtos, atos); | |
| 488 locals_index_wide(rbx); | |
| 489 __ movq(rax, aaddress(rbx)); | |
| 490 debug_only(__ verify_local_tag(frame::TagReference, rbx)); | |
| 491 } | |
| 492 | |
| 493 void TemplateTable::index_check(Register array, Register index) { | |
| 494 // destroys rbx | |
| 495 // check array | |
| 496 __ null_check(array, arrayOopDesc::length_offset_in_bytes()); | |
| 497 // sign extend index for use by indexed load | |
| 498 __ movslq(index, index); | |
| 499 // check index | |
| 500 __ cmpl(index, Address(array, arrayOopDesc::length_offset_in_bytes())); | |
| 501 if (index != rbx) { | |
| 502 // ??? convention: move aberrant index into ebx for exception message | |
| 503 assert(rbx != array, "different registers"); | |
| 504 __ movl(rbx, index); | |
| 505 } | |
| 506 __ jump_cc(Assembler::aboveEqual, | |
| 507 ExternalAddress(Interpreter::_throw_ArrayIndexOutOfBoundsException_entry)); | |
| 508 } | |
| 509 | |
| 510 void TemplateTable::iaload() { | |
| 511 transition(itos, itos); | |
| 512 __ pop_ptr(rdx); | |
| 513 // eax: index | |
| 514 // rdx: array | |
| 515 index_check(rdx, rax); // kills rbx | |
| 516 __ movl(rax, Address(rdx, rax, | |
| 517 Address::times_4, | |
| 518 arrayOopDesc::base_offset_in_bytes(T_INT))); | |
| 519 } | |
| 520 | |
| 521 void TemplateTable::laload() { | |
| 522 transition(itos, ltos); | |
| 523 __ pop_ptr(rdx); | |
| 524 // eax: index | |
| 525 // rdx: array | |
| 526 index_check(rdx, rax); // kills rbx | |
| 527 __ movq(rax, Address(rdx, rbx, | |
| 528 Address::times_8, | |
| 529 arrayOopDesc::base_offset_in_bytes(T_LONG))); | |
| 530 } | |
| 531 | |
| 532 void TemplateTable::faload() { | |
| 533 transition(itos, ftos); | |
| 534 __ pop_ptr(rdx); | |
| 535 // eax: index | |
| 536 // rdx: array | |
| 537 index_check(rdx, rax); // kills rbx | |
| 538 __ movflt(xmm0, Address(rdx, rax, | |
| 539 Address::times_4, | |
| 540 arrayOopDesc::base_offset_in_bytes(T_FLOAT))); | |
| 541 } | |
| 542 | |
| 543 void TemplateTable::daload() { | |
| 544 transition(itos, dtos); | |
| 545 __ pop_ptr(rdx); | |
| 546 // eax: index | |
| 547 // rdx: array | |
| 548 index_check(rdx, rax); // kills rbx | |
| 549 __ movdbl(xmm0, Address(rdx, rax, | |
| 550 Address::times_8, | |
| 551 arrayOopDesc::base_offset_in_bytes(T_DOUBLE))); | |
| 552 } | |
| 553 | |
| 554 void TemplateTable::aaload() { | |
| 555 transition(itos, atos); | |
| 556 __ pop_ptr(rdx); | |
| 557 // eax: index | |
| 558 // rdx: array | |
| 559 index_check(rdx, rax); // kills rbx | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
560 __ load_heap_oop(rax, Address(rdx, rax, |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
561 UseCompressedOops ? Address::times_4 : Address::times_8, |
| 0 | 562 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 563 } | |
| 564 | |
| 565 void TemplateTable::baload() { | |
| 566 transition(itos, itos); | |
| 567 __ pop_ptr(rdx); | |
| 568 // eax: index | |
| 569 // rdx: array | |
| 570 index_check(rdx, rax); // kills rbx | |
| 571 __ load_signed_byte(rax, | |
| 572 Address(rdx, rax, | |
| 573 Address::times_1, | |
| 574 arrayOopDesc::base_offset_in_bytes(T_BYTE))); | |
| 575 } | |
| 576 | |
| 577 void TemplateTable::caload() { | |
| 578 transition(itos, itos); | |
| 579 __ pop_ptr(rdx); | |
| 580 // eax: index | |
| 581 // rdx: array | |
| 582 index_check(rdx, rax); // kills rbx | |
| 583 __ load_unsigned_word(rax, | |
| 584 Address(rdx, rax, | |
| 585 Address::times_2, | |
| 586 arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
| 587 } | |
| 588 | |
| 589 // iload followed by caload frequent pair | |
| 590 void TemplateTable::fast_icaload() { | |
| 591 transition(vtos, itos); | |
| 592 // load index out of locals | |
| 593 locals_index(rbx); | |
| 594 __ movl(rax, iaddress(rbx)); | |
| 595 debug_only(__ verify_local_tag(frame::TagValue, rbx)); | |
| 596 | |
| 597 // eax: index | |
| 598 // rdx: array | |
| 599 __ pop_ptr(rdx); | |
| 600 index_check(rdx, rax); // kills rbx | |
| 601 __ load_unsigned_word(rax, | |
| 602 Address(rdx, rax, | |
| 603 Address::times_2, | |
| 604 arrayOopDesc::base_offset_in_bytes(T_CHAR))); | |
| 605 } | |
| 606 | |
| 607 void TemplateTable::saload() { | |
| 608 transition(itos, itos); | |
| 609 __ pop_ptr(rdx); | |
| 610 // eax: index | |
| 611 // rdx: array | |
| 612 index_check(rdx, rax); // kills rbx | |
| 613 __ load_signed_word(rax, | |
| 614 Address(rdx, rax, | |
| 615 Address::times_2, | |
| 616 arrayOopDesc::base_offset_in_bytes(T_SHORT))); | |
| 617 } | |
| 618 | |
| 619 void TemplateTable::iload(int n) { | |
| 620 transition(vtos, itos); | |
| 621 __ movl(rax, iaddress(n)); | |
| 622 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
| 623 } | |
| 624 | |
| 625 void TemplateTable::lload(int n) { | |
| 626 transition(vtos, ltos); | |
| 627 __ movq(rax, laddress(n)); | |
| 628 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
| 629 } | |
| 630 | |
| 631 void TemplateTable::fload(int n) { | |
| 632 transition(vtos, ftos); | |
| 633 __ movflt(xmm0, faddress(n)); | |
| 634 debug_only(__ verify_local_tag(frame::TagValue, n)); | |
| 635 } | |
| 636 | |
| 637 void TemplateTable::dload(int n) { | |
| 638 transition(vtos, dtos); | |
| 639 __ movdbl(xmm0, daddress(n)); | |
| 640 debug_only(__ verify_local_tag(frame::TagCategory2, n)); | |
| 641 } | |
| 642 | |
| 643 void TemplateTable::aload(int n) { | |
| 644 transition(vtos, atos); | |
| 645 __ movq(rax, aaddress(n)); | |
| 646 debug_only(__ verify_local_tag(frame::TagReference, n)); | |
| 647 } | |
| 648 | |
| 649 void TemplateTable::aload_0() { | |
| 650 transition(vtos, atos); | |
| 651 // According to bytecode histograms, the pairs: | |
| 652 // | |
| 653 // _aload_0, _fast_igetfield | |
| 654 // _aload_0, _fast_agetfield | |
| 655 // _aload_0, _fast_fgetfield | |
| 656 // | |
| 657 // occur frequently. If RewriteFrequentPairs is set, the (slow) | |
| 658 // _aload_0 bytecode checks if the next bytecode is either | |
| 659 // _fast_igetfield, _fast_agetfield or _fast_fgetfield and then | |
| 660 // rewrites the current bytecode into a pair bytecode; otherwise it | |
| 661 // rewrites the current bytecode into _fast_aload_0 that doesn't do | |
| 662 // the pair check anymore. | |
| 663 // | |
| 664 // Note: If the next bytecode is _getfield, the rewrite must be | |
| 665 // delayed, otherwise we may miss an opportunity for a pair. | |
| 666 // | |
| 667 // Also rewrite frequent pairs | |
| 668 // aload_0, aload_1 | |
| 669 // aload_0, iload_1 | |
| 670 // These bytecodes with a small amount of code are most profitable | |
| 671 // to rewrite | |
| 672 if (RewriteFrequentPairs) { | |
| 673 Label rewrite, done; | |
| 674 const Register bc = c_rarg3; | |
| 675 assert(rbx != bc, "register damaged"); | |
| 676 // get next byte | |
| 677 __ load_unsigned_byte(rbx, | |
| 678 at_bcp(Bytecodes::length_for(Bytecodes::_aload_0))); | |
| 679 | |
| 680 // do actual aload_0 | |
| 681 aload(0); | |
| 682 | |
| 683 // if _getfield then wait with rewrite | |
| 684 __ cmpl(rbx, Bytecodes::_getfield); | |
| 685 __ jcc(Assembler::equal, done); | |
| 686 | |
| 687 // if _igetfield then reqrite to _fast_iaccess_0 | |
| 688 assert(Bytecodes::java_code(Bytecodes::_fast_iaccess_0) == | |
| 689 Bytecodes::_aload_0, | |
| 690 "fix bytecode definition"); | |
| 691 __ cmpl(rbx, Bytecodes::_fast_igetfield); | |
| 692 __ movl(bc, Bytecodes::_fast_iaccess_0); | |
| 693 __ jccb(Assembler::equal, rewrite); | |
| 694 | |
| 695 // if _agetfield then reqrite to _fast_aaccess_0 | |
| 696 assert(Bytecodes::java_code(Bytecodes::_fast_aaccess_0) == | |
| 697 Bytecodes::_aload_0, | |
| 698 "fix bytecode definition"); | |
| 699 __ cmpl(rbx, Bytecodes::_fast_agetfield); | |
| 700 __ movl(bc, Bytecodes::_fast_aaccess_0); | |
| 701 __ jccb(Assembler::equal, rewrite); | |
| 702 | |
| 703 // if _fgetfield then reqrite to _fast_faccess_0 | |
| 704 assert(Bytecodes::java_code(Bytecodes::_fast_faccess_0) == | |
| 705 Bytecodes::_aload_0, | |
| 706 "fix bytecode definition"); | |
| 707 __ cmpl(rbx, Bytecodes::_fast_fgetfield); | |
| 708 __ movl(bc, Bytecodes::_fast_faccess_0); | |
| 709 __ jccb(Assembler::equal, rewrite); | |
| 710 | |
| 711 // else rewrite to _fast_aload0 | |
| 712 assert(Bytecodes::java_code(Bytecodes::_fast_aload_0) == | |
| 713 Bytecodes::_aload_0, | |
| 714 "fix bytecode definition"); | |
| 715 __ movl(bc, Bytecodes::_fast_aload_0); | |
| 716 | |
| 717 // rewrite | |
| 718 // bc: fast bytecode | |
| 719 __ bind(rewrite); | |
| 720 patch_bytecode(Bytecodes::_aload_0, bc, rbx, false); | |
| 721 | |
| 722 __ bind(done); | |
| 723 } else { | |
| 724 aload(0); | |
| 725 } | |
| 726 } | |
| 727 | |
| 728 void TemplateTable::istore() { | |
| 729 transition(itos, vtos); | |
| 730 locals_index(rbx); | |
| 731 __ movl(iaddress(rbx), rax); | |
| 732 __ tag_local(frame::TagValue, rbx); | |
| 733 } | |
| 734 | |
| 735 void TemplateTable::lstore() { | |
| 736 transition(ltos, vtos); | |
| 737 locals_index(rbx); | |
| 738 __ movq(laddress(rbx), rax); | |
| 739 __ tag_local(frame::TagCategory2, rbx); | |
| 740 } | |
| 741 | |
| 742 void TemplateTable::fstore() { | |
| 743 transition(ftos, vtos); | |
| 744 locals_index(rbx); | |
| 745 __ movflt(faddress(rbx), xmm0); | |
| 746 __ tag_local(frame::TagValue, rbx); | |
| 747 } | |
| 748 | |
| 749 void TemplateTable::dstore() { | |
| 750 transition(dtos, vtos); | |
| 751 locals_index(rbx); | |
| 752 __ movdbl(daddress(rbx), xmm0); | |
| 753 __ tag_local(frame::TagCategory2, rbx); | |
| 754 } | |
| 755 | |
| 756 void TemplateTable::astore() { | |
| 757 transition(vtos, vtos); | |
| 758 __ pop_ptr(rax, rdx); // will need to pop tag too | |
| 759 locals_index(rbx); | |
| 760 __ movq(aaddress(rbx), rax); | |
| 761 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr | |
| 762 } | |
| 763 | |
| 764 void TemplateTable::wide_istore() { | |
| 765 transition(vtos, vtos); | |
| 766 __ pop_i(); | |
| 767 locals_index_wide(rbx); | |
| 768 __ movl(iaddress(rbx), rax); | |
| 769 __ tag_local(frame::TagValue, rbx); | |
| 770 } | |
| 771 | |
| 772 void TemplateTable::wide_lstore() { | |
| 773 transition(vtos, vtos); | |
| 774 __ pop_l(); | |
| 775 locals_index_wide(rbx); | |
| 776 __ movq(laddress(rbx), rax); | |
| 777 __ tag_local(frame::TagCategory2, rbx); | |
| 778 } | |
| 779 | |
| 780 void TemplateTable::wide_fstore() { | |
| 781 transition(vtos, vtos); | |
| 782 __ pop_f(); | |
| 783 locals_index_wide(rbx); | |
| 784 __ movflt(faddress(rbx), xmm0); | |
| 785 __ tag_local(frame::TagValue, rbx); | |
| 786 } | |
| 787 | |
| 788 void TemplateTable::wide_dstore() { | |
| 789 transition(vtos, vtos); | |
| 790 __ pop_d(); | |
| 791 locals_index_wide(rbx); | |
| 792 __ movdbl(daddress(rbx), xmm0); | |
| 793 __ tag_local(frame::TagCategory2, rbx); | |
| 794 } | |
| 795 | |
| 796 void TemplateTable::wide_astore() { | |
| 797 transition(vtos, vtos); | |
| 798 __ pop_ptr(rax, rdx); // will need to pop tag too | |
| 799 locals_index_wide(rbx); | |
| 800 __ movq(aaddress(rbx), rax); | |
| 801 __ tag_local(rdx, rbx); // store tag from stack, might be returnAddr | |
| 802 } | |
| 803 | |
| 804 void TemplateTable::iastore() { | |
| 805 transition(itos, vtos); | |
| 806 __ pop_i(rbx); | |
| 807 __ pop_ptr(rdx); | |
| 808 // eax: value | |
| 809 // ebx: index | |
| 810 // rdx: array | |
| 811 index_check(rdx, rbx); // prefer index in ebx | |
| 812 __ movl(Address(rdx, rbx, | |
| 813 Address::times_4, | |
| 814 arrayOopDesc::base_offset_in_bytes(T_INT)), | |
| 815 rax); | |
| 816 } | |
| 817 | |
| 818 void TemplateTable::lastore() { | |
| 819 transition(ltos, vtos); | |
| 820 __ pop_i(rbx); | |
| 821 __ pop_ptr(rdx); | |
| 822 // rax: value | |
| 823 // ebx: index | |
| 824 // rdx: array | |
| 825 index_check(rdx, rbx); // prefer index in ebx | |
| 826 __ movq(Address(rdx, rbx, | |
| 827 Address::times_8, | |
| 828 arrayOopDesc::base_offset_in_bytes(T_LONG)), | |
| 829 rax); | |
| 830 } | |
| 831 | |
| 832 void TemplateTable::fastore() { | |
| 833 transition(ftos, vtos); | |
| 834 __ pop_i(rbx); | |
| 835 __ pop_ptr(rdx); | |
| 836 // xmm0: value | |
| 837 // ebx: index | |
| 838 // rdx: array | |
| 839 index_check(rdx, rbx); // prefer index in ebx | |
| 840 __ movflt(Address(rdx, rbx, | |
| 841 Address::times_4, | |
| 842 arrayOopDesc::base_offset_in_bytes(T_FLOAT)), | |
| 843 xmm0); | |
| 844 } | |
| 845 | |
| 846 void TemplateTable::dastore() { | |
| 847 transition(dtos, vtos); | |
| 848 __ pop_i(rbx); | |
| 849 __ pop_ptr(rdx); | |
| 850 // xmm0: value | |
| 851 // ebx: index | |
| 852 // rdx: array | |
| 853 index_check(rdx, rbx); // prefer index in ebx | |
| 854 __ movdbl(Address(rdx, rbx, | |
| 855 Address::times_8, | |
| 856 arrayOopDesc::base_offset_in_bytes(T_DOUBLE)), | |
| 857 xmm0); | |
| 858 } | |
| 859 | |
| 860 void TemplateTable::aastore() { | |
| 861 Label is_null, ok_is_subtype, done; | |
| 862 transition(vtos, vtos); | |
| 863 // stack: ..., array, index, value | |
| 864 __ movq(rax, at_tos()); // value | |
| 865 __ movl(rcx, at_tos_p1()); // index | |
| 866 __ movq(rdx, at_tos_p2()); // array | |
| 867 index_check(rdx, rcx); // kills rbx | |
| 868 // do array store check - check for NULL value first | |
| 869 __ testq(rax, rax); | |
| 870 __ jcc(Assembler::zero, is_null); | |
| 871 | |
| 872 // Move subklass into rbx | |
|
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873 __ load_klass(rbx, rax); |
| 0 | 874 // Move superklass into rax |
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875 __ load_klass(rax, rdx); |
| 0 | 876 __ movq(rax, Address(rax, |
| 877 sizeof(oopDesc) + | |
| 878 objArrayKlass::element_klass_offset_in_bytes())); | |
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879 // Compress array + index*oopSize + 12 into a single register. Frees rcx. |
| 0 | 880 __ leaq(rdx, Address(rdx, rcx, |
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881 UseCompressedOops ? Address::times_4 : Address::times_8, |
| 0 | 882 arrayOopDesc::base_offset_in_bytes(T_OBJECT))); |
| 883 | |
| 884 // Generate subtype check. Blows rcx, rdi | |
| 885 // Superklass in rax. Subklass in rbx. | |
| 886 __ gen_subtype_check(rbx, ok_is_subtype); | |
| 887 | |
| 888 // Come here on failure | |
| 889 // object is at TOS | |
| 890 __ jump(ExternalAddress(Interpreter::_throw_ArrayStoreException_entry)); | |
| 891 | |
| 892 // Come here on success | |
| 893 __ bind(ok_is_subtype); | |
| 894 __ movq(rax, at_tos()); // Value | |
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895 __ store_heap_oop(Address(rdx, 0), rax); |
| 0 | 896 __ store_check(rdx); |
| 897 __ jmp(done); | |
| 898 | |
| 899 // Have a NULL in rax, rdx=array, ecx=index. Store NULL at ary[idx] | |
| 900 __ bind(is_null); | |
| 901 __ profile_null_seen(rbx); | |
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902 __ store_heap_oop(Address(rdx, rcx, |
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903 UseCompressedOops ? Address::times_4 : Address::times_8, |
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904 arrayOopDesc::base_offset_in_bytes(T_OBJECT)), |
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905 rax); |
| 0 | 906 |
| 907 // Pop stack arguments | |
| 908 __ bind(done); | |
| 909 __ addq(rsp, 3 * Interpreter::stackElementSize()); | |
| 910 } | |
| 911 | |
| 912 void TemplateTable::bastore() { | |
| 913 transition(itos, vtos); | |
| 914 __ pop_i(rbx); | |
| 915 __ pop_ptr(rdx); | |
| 916 // eax: value | |
| 917 // ebx: index | |
| 918 // rdx: array | |
| 919 index_check(rdx, rbx); // prefer index in ebx | |
| 920 __ movb(Address(rdx, rbx, | |
| 921 Address::times_1, | |
| 922 arrayOopDesc::base_offset_in_bytes(T_BYTE)), | |
| 923 rax); | |
| 924 } | |
| 925 | |
| 926 void TemplateTable::castore() { | |
| 927 transition(itos, vtos); | |
| 928 __ pop_i(rbx); | |
| 929 __ pop_ptr(rdx); | |
| 930 // eax: value | |
| 931 // ebx: index | |
| 932 // rdx: array | |
| 933 index_check(rdx, rbx); // prefer index in ebx | |
| 934 __ movw(Address(rdx, rbx, | |
| 935 Address::times_2, | |
| 936 arrayOopDesc::base_offset_in_bytes(T_CHAR)), | |
| 937 rax); | |
| 938 } | |
| 939 | |
| 940 void TemplateTable::sastore() { | |
| 941 castore(); | |
| 942 } | |
| 943 | |
| 944 void TemplateTable::istore(int n) { | |
| 945 transition(itos, vtos); | |
| 946 __ movl(iaddress(n), rax); | |
| 947 __ tag_local(frame::TagValue, n); | |
| 948 } | |
| 949 | |
| 950 void TemplateTable::lstore(int n) { | |
| 951 transition(ltos, vtos); | |
| 952 __ movq(laddress(n), rax); | |
| 953 __ tag_local(frame::TagCategory2, n); | |
| 954 } | |
| 955 | |
| 956 void TemplateTable::fstore(int n) { | |
| 957 transition(ftos, vtos); | |
| 958 __ movflt(faddress(n), xmm0); | |
| 959 __ tag_local(frame::TagValue, n); | |
| 960 } | |
| 961 | |
| 962 void TemplateTable::dstore(int n) { | |
| 963 transition(dtos, vtos); | |
| 964 __ movdbl(daddress(n), xmm0); | |
| 965 __ tag_local(frame::TagCategory2, n); | |
| 966 } | |
| 967 | |
| 968 void TemplateTable::astore(int n) { | |
| 969 transition(vtos, vtos); | |
| 970 __ pop_ptr(rax, rdx); | |
| 971 __ movq(aaddress(n), rax); | |
| 972 __ tag_local(rdx, n); | |
| 973 } | |
| 974 | |
| 975 void TemplateTable::pop() { | |
| 976 transition(vtos, vtos); | |
| 977 __ addq(rsp, Interpreter::stackElementSize()); | |
| 978 } | |
| 979 | |
| 980 void TemplateTable::pop2() { | |
| 981 transition(vtos, vtos); | |
| 982 __ addq(rsp, 2 * Interpreter::stackElementSize()); | |
| 983 } | |
| 984 | |
| 985 void TemplateTable::dup() { | |
| 986 transition(vtos, vtos); | |
| 987 __ load_ptr_and_tag(0, rax, rdx); | |
| 988 __ push_ptr(rax, rdx); | |
| 989 // stack: ..., a, a | |
| 990 } | |
| 991 | |
| 992 void TemplateTable::dup_x1() { | |
| 993 transition(vtos, vtos); | |
| 994 // stack: ..., a, b | |
| 995 __ load_ptr_and_tag(0, rax, rdx); // load b | |
| 996 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
| 997 __ store_ptr_and_tag(1, rax, rdx); // store b | |
| 998 __ store_ptr_and_tag(0, rcx, rbx); // store a | |
| 999 __ push_ptr(rax, rdx); // push b | |
| 1000 // stack: ..., b, a, b | |
| 1001 } | |
| 1002 | |
| 1003 void TemplateTable::dup_x2() { | |
| 1004 transition(vtos, vtos); | |
| 1005 // stack: ..., a, b, c | |
| 1006 __ load_ptr_and_tag(0, rax, rdx); // load c | |
| 1007 __ load_ptr_and_tag(2, rcx, rbx); // load a | |
| 1008 __ store_ptr_and_tag(2, rax, rdx); // store c in a | |
| 1009 __ push_ptr(rax, rdx); // push c | |
| 1010 // stack: ..., c, b, c, c | |
| 1011 __ load_ptr_and_tag(2, rax, rdx); // load b | |
| 1012 __ store_ptr_and_tag(2, rcx, rbx); // store a in b | |
| 1013 // stack: ..., c, a, c, c | |
| 1014 __ store_ptr_and_tag(1, rax, rdx); // store b in c | |
| 1015 // stack: ..., c, a, b, c | |
| 1016 } | |
| 1017 | |
| 1018 void TemplateTable::dup2() { | |
| 1019 transition(vtos, vtos); | |
| 1020 // stack: ..., a, b | |
| 1021 __ load_ptr_and_tag(1, rax, rdx); // load a | |
| 1022 __ push_ptr(rax, rdx); // push a | |
| 1023 __ load_ptr_and_tag(1, rax, rdx); // load b | |
| 1024 __ push_ptr(rax, rdx); // push b | |
| 1025 // stack: ..., a, b, a, b | |
| 1026 } | |
| 1027 | |
| 1028 void TemplateTable::dup2_x1() { | |
| 1029 transition(vtos, vtos); | |
| 1030 // stack: ..., a, b, c | |
| 1031 __ load_ptr_and_tag(0, rcx, rbx); // load c | |
| 1032 __ load_ptr_and_tag(1, rax, rdx); // load b | |
| 1033 __ push_ptr(rax, rdx); // push b | |
| 1034 __ push_ptr(rcx, rbx); // push c | |
| 1035 // stack: ..., a, b, c, b, c | |
| 1036 __ store_ptr_and_tag(3, rcx, rbx); // store c in b | |
| 1037 // stack: ..., a, c, c, b, c | |
| 1038 __ load_ptr_and_tag(4, rcx, rbx); // load a | |
| 1039 __ store_ptr_and_tag(2, rcx, rbx); // store a in 2nd c | |
| 1040 // stack: ..., a, c, a, b, c | |
| 1041 __ store_ptr_and_tag(4, rax, rdx); // store b in a | |
| 1042 // stack: ..., b, c, a, b, c | |
| 1043 } | |
| 1044 | |
| 1045 void TemplateTable::dup2_x2() { | |
| 1046 transition(vtos, vtos); | |
| 1047 // stack: ..., a, b, c, d | |
| 1048 __ load_ptr_and_tag(0, rcx, rbx); // load d | |
| 1049 __ load_ptr_and_tag(1, rax, rdx); // load c | |
| 1050 __ push_ptr(rax, rdx); // push c | |
| 1051 __ push_ptr(rcx, rbx); // push d | |
| 1052 // stack: ..., a, b, c, d, c, d | |
| 1053 __ load_ptr_and_tag(4, rax, rdx); // load b | |
| 1054 __ store_ptr_and_tag(2, rax, rdx); // store b in d | |
| 1055 __ store_ptr_and_tag(4, rcx, rbx); // store d in b | |
| 1056 // stack: ..., a, d, c, b, c, d | |
| 1057 __ load_ptr_and_tag(5, rcx, rbx); // load a | |
| 1058 __ load_ptr_and_tag(3, rax, rdx); // load c | |
| 1059 __ store_ptr_and_tag(3, rcx, rbx); // store a in c | |
| 1060 __ store_ptr_and_tag(5, rax, rdx); // store c in a | |
| 1061 // stack: ..., c, d, a, b, c, d | |
| 1062 } | |
| 1063 | |
| 1064 void TemplateTable::swap() { | |
| 1065 transition(vtos, vtos); | |
| 1066 // stack: ..., a, b | |
| 1067 __ load_ptr_and_tag(1, rcx, rbx); // load a | |
| 1068 __ load_ptr_and_tag(0, rax, rdx); // load b | |
| 1069 __ store_ptr_and_tag(0, rcx, rbx); // store a in b | |
| 1070 __ store_ptr_and_tag(1, rax, rdx); // store b in a | |
| 1071 // stack: ..., b, a | |
| 1072 } | |
| 1073 | |
| 1074 void TemplateTable::iop2(Operation op) { | |
| 1075 transition(itos, itos); | |
| 1076 switch (op) { | |
| 1077 case add : __ pop_i(rdx); __ addl (rax, rdx); break; | |
| 1078 case sub : __ movl(rdx, rax); __ pop_i(rax); __ subl (rax, rdx); break; | |
| 1079 case mul : __ pop_i(rdx); __ imull(rax, rdx); break; | |
| 1080 case _and : __ pop_i(rdx); __ andl (rax, rdx); break; | |
| 1081 case _or : __ pop_i(rdx); __ orl (rax, rdx); break; | |
| 1082 case _xor : __ pop_i(rdx); __ xorl (rax, rdx); break; | |
| 1083 case shl : __ movl(rcx, rax); __ pop_i(rax); __ shll (rax); break; | |
| 1084 case shr : __ movl(rcx, rax); __ pop_i(rax); __ sarl (rax); break; | |
| 1085 case ushr : __ movl(rcx, rax); __ pop_i(rax); __ shrl (rax); break; | |
| 1086 default : ShouldNotReachHere(); | |
| 1087 } | |
| 1088 } | |
| 1089 | |
| 1090 void TemplateTable::lop2(Operation op) { | |
| 1091 transition(ltos, ltos); | |
| 1092 switch (op) { | |
| 1093 case add : __ pop_l(rdx); __ addq (rax, rdx); break; | |
| 1094 case sub : __ movq(rdx, rax); __ pop_l(rax); __ subq (rax, rdx); break; | |
| 1095 case _and : __ pop_l(rdx); __ andq (rax, rdx); break; | |
| 1096 case _or : __ pop_l(rdx); __ orq (rax, rdx); break; | |
| 1097 case _xor : __ pop_l(rdx); __ xorq (rax, rdx); break; | |
| 1098 default : ShouldNotReachHere(); | |
| 1099 } | |
| 1100 } | |
| 1101 | |
| 1102 void TemplateTable::idiv() { | |
| 1103 transition(itos, itos); | |
| 1104 __ movl(rcx, rax); | |
| 1105 __ pop_i(rax); | |
| 1106 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
| 1107 // they are not equal, one could do a normal division (no correction | |
| 1108 // needed), which may speed up this implementation for the common case. | |
| 1109 // (see also JVM spec., p.243 & p.271) | |
| 1110 __ corrected_idivl(rcx); | |
| 1111 } | |
| 1112 | |
| 1113 void TemplateTable::irem() { | |
| 1114 transition(itos, itos); | |
| 1115 __ movl(rcx, rax); | |
| 1116 __ pop_i(rax); | |
| 1117 // Note: could xor eax and ecx and compare with (-1 ^ min_int). If | |
| 1118 // they are not equal, one could do a normal division (no correction | |
| 1119 // needed), which may speed up this implementation for the common case. | |
| 1120 // (see also JVM spec., p.243 & p.271) | |
| 1121 __ corrected_idivl(rcx); | |
| 1122 __ movl(rax, rdx); | |
| 1123 } | |
| 1124 | |
| 1125 void TemplateTable::lmul() { | |
| 1126 transition(ltos, ltos); | |
| 1127 __ pop_l(rdx); | |
| 1128 __ imulq(rax, rdx); | |
| 1129 } | |
| 1130 | |
| 1131 void TemplateTable::ldiv() { | |
| 1132 transition(ltos, ltos); | |
| 1133 __ movq(rcx, rax); | |
| 1134 __ pop_l(rax); | |
| 1135 // generate explicit div0 check | |
| 1136 __ testq(rcx, rcx); | |
| 1137 __ jump_cc(Assembler::zero, | |
| 1138 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
| 1139 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
| 1140 // they are not equal, one could do a normal division (no correction | |
| 1141 // needed), which may speed up this implementation for the common case. | |
| 1142 // (see also JVM spec., p.243 & p.271) | |
| 1143 __ corrected_idivq(rcx); // kills rbx | |
| 1144 } | |
| 1145 | |
| 1146 void TemplateTable::lrem() { | |
| 1147 transition(ltos, ltos); | |
| 1148 __ movq(rcx, rax); | |
| 1149 __ pop_l(rax); | |
| 1150 __ testq(rcx, rcx); | |
| 1151 __ jump_cc(Assembler::zero, | |
| 1152 ExternalAddress(Interpreter::_throw_ArithmeticException_entry)); | |
| 1153 // Note: could xor rax and rcx and compare with (-1 ^ min_int). If | |
| 1154 // they are not equal, one could do a normal division (no correction | |
| 1155 // needed), which may speed up this implementation for the common case. | |
| 1156 // (see also JVM spec., p.243 & p.271) | |
| 1157 __ corrected_idivq(rcx); // kills rbx | |
| 1158 __ movq(rax, rdx); | |
| 1159 } | |
| 1160 | |
| 1161 void TemplateTable::lshl() { | |
| 1162 transition(itos, ltos); | |
| 1163 __ movl(rcx, rax); // get shift count | |
| 1164 __ pop_l(rax); // get shift value | |
| 1165 __ shlq(rax); | |
| 1166 } | |
| 1167 | |
| 1168 void TemplateTable::lshr() { | |
| 1169 transition(itos, ltos); | |
| 1170 __ movl(rcx, rax); // get shift count | |
| 1171 __ pop_l(rax); // get shift value | |
| 1172 __ sarq(rax); | |
| 1173 } | |
| 1174 | |
| 1175 void TemplateTable::lushr() { | |
| 1176 transition(itos, ltos); | |
| 1177 __ movl(rcx, rax); // get shift count | |
| 1178 __ pop_l(rax); // get shift value | |
| 1179 __ shrq(rax); | |
| 1180 } | |
| 1181 | |
| 1182 void TemplateTable::fop2(Operation op) { | |
| 1183 transition(ftos, ftos); | |
| 1184 switch (op) { | |
| 1185 case add: | |
| 1186 __ addss(xmm0, at_rsp()); | |
| 1187 __ addq(rsp, Interpreter::stackElementSize()); | |
| 1188 break; | |
| 1189 case sub: | |
| 1190 __ movflt(xmm1, xmm0); | |
| 1191 __ pop_f(xmm0); | |
| 1192 __ subss(xmm0, xmm1); | |
| 1193 break; | |
| 1194 case mul: | |
| 1195 __ mulss(xmm0, at_rsp()); | |
| 1196 __ addq(rsp, Interpreter::stackElementSize()); | |
| 1197 break; | |
| 1198 case div: | |
| 1199 __ movflt(xmm1, xmm0); | |
| 1200 __ pop_f(xmm0); | |
| 1201 __ divss(xmm0, xmm1); | |
| 1202 break; | |
| 1203 case rem: | |
| 1204 __ movflt(xmm1, xmm0); | |
| 1205 __ pop_f(xmm0); | |
| 1206 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::frem), 2); | |
| 1207 break; | |
| 1208 default: | |
| 1209 ShouldNotReachHere(); | |
| 1210 break; | |
| 1211 } | |
| 1212 } | |
| 1213 | |
| 1214 void TemplateTable::dop2(Operation op) { | |
| 1215 transition(dtos, dtos); | |
| 1216 switch (op) { | |
| 1217 case add: | |
| 1218 __ addsd(xmm0, at_rsp()); | |
| 1219 __ addq(rsp, 2 * Interpreter::stackElementSize()); | |
| 1220 break; | |
| 1221 case sub: | |
| 1222 __ movdbl(xmm1, xmm0); | |
| 1223 __ pop_d(xmm0); | |
| 1224 __ subsd(xmm0, xmm1); | |
| 1225 break; | |
| 1226 case mul: | |
| 1227 __ mulsd(xmm0, at_rsp()); | |
| 1228 __ addq(rsp, 2 * Interpreter::stackElementSize()); | |
| 1229 break; | |
| 1230 case div: | |
| 1231 __ movdbl(xmm1, xmm0); | |
| 1232 __ pop_d(xmm0); | |
| 1233 __ divsd(xmm0, xmm1); | |
| 1234 break; | |
| 1235 case rem: | |
| 1236 __ movdbl(xmm1, xmm0); | |
| 1237 __ pop_d(xmm0); | |
| 1238 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::drem), 2); | |
| 1239 break; | |
| 1240 default: | |
| 1241 ShouldNotReachHere(); | |
| 1242 break; | |
| 1243 } | |
| 1244 } | |
| 1245 | |
| 1246 void TemplateTable::ineg() { | |
| 1247 transition(itos, itos); | |
| 1248 __ negl(rax); | |
| 1249 } | |
| 1250 | |
| 1251 void TemplateTable::lneg() { | |
| 1252 transition(ltos, ltos); | |
| 1253 __ negq(rax); | |
| 1254 } | |
| 1255 | |
| 1256 // Note: 'double' and 'long long' have 32-bits alignment on x86. | |
| 1257 static jlong* double_quadword(jlong *adr, jlong lo, jlong hi) { | |
| 1258 // Use the expression (adr)&(~0xF) to provide 128-bits aligned address | |
| 1259 // of 128-bits operands for SSE instructions. | |
| 1260 jlong *operand = (jlong*)(((intptr_t)adr)&((intptr_t)(~0xF))); | |
| 1261 // Store the value to a 128-bits operand. | |
| 1262 operand[0] = lo; | |
| 1263 operand[1] = hi; | |
| 1264 return operand; | |
| 1265 } | |
| 1266 | |
| 1267 // Buffer for 128-bits masks used by SSE instructions. | |
| 1268 static jlong float_signflip_pool[2*2]; | |
| 1269 static jlong double_signflip_pool[2*2]; | |
| 1270 | |
| 1271 void TemplateTable::fneg() { | |
| 1272 transition(ftos, ftos); | |
| 1273 static jlong *float_signflip = double_quadword(&float_signflip_pool[1], 0x8000000080000000, 0x8000000080000000); | |
| 1274 __ xorps(xmm0, ExternalAddress((address) float_signflip)); | |
| 1275 } | |
| 1276 | |
| 1277 void TemplateTable::dneg() { | |
| 1278 transition(dtos, dtos); | |
| 1279 static jlong *double_signflip = double_quadword(&double_signflip_pool[1], 0x8000000000000000, 0x8000000000000000); | |
| 1280 __ xorpd(xmm0, ExternalAddress((address) double_signflip)); | |
| 1281 } | |
| 1282 | |
| 1283 void TemplateTable::iinc() { | |
| 1284 transition(vtos, vtos); | |
| 1285 __ load_signed_byte(rdx, at_bcp(2)); // get constant | |
| 1286 locals_index(rbx); | |
| 1287 __ addl(iaddress(rbx), rdx); | |
| 1288 } | |
| 1289 | |
| 1290 void TemplateTable::wide_iinc() { | |
| 1291 transition(vtos, vtos); | |
| 1292 __ movl(rdx, at_bcp(4)); // get constant | |
| 1293 locals_index_wide(rbx); | |
| 1294 __ bswapl(rdx); // swap bytes & sign-extend constant | |
| 1295 __ sarl(rdx, 16); | |
| 1296 __ addl(iaddress(rbx), rdx); | |
| 1297 // Note: should probably use only one movl to get both | |
| 1298 // the index and the constant -> fix this | |
| 1299 } | |
| 1300 | |
| 1301 void TemplateTable::convert() { | |
| 1302 // Checking | |
| 1303 #ifdef ASSERT | |
| 1304 { | |
| 1305 TosState tos_in = ilgl; | |
| 1306 TosState tos_out = ilgl; | |
| 1307 switch (bytecode()) { | |
| 1308 case Bytecodes::_i2l: // fall through | |
| 1309 case Bytecodes::_i2f: // fall through | |
| 1310 case Bytecodes::_i2d: // fall through | |
| 1311 case Bytecodes::_i2b: // fall through | |
| 1312 case Bytecodes::_i2c: // fall through | |
| 1313 case Bytecodes::_i2s: tos_in = itos; break; | |
| 1314 case Bytecodes::_l2i: // fall through | |
| 1315 case Bytecodes::_l2f: // fall through | |
| 1316 case Bytecodes::_l2d: tos_in = ltos; break; | |
| 1317 case Bytecodes::_f2i: // fall through | |
| 1318 case Bytecodes::_f2l: // fall through | |
| 1319 case Bytecodes::_f2d: tos_in = ftos; break; | |
| 1320 case Bytecodes::_d2i: // fall through | |
| 1321 case Bytecodes::_d2l: // fall through | |
| 1322 case Bytecodes::_d2f: tos_in = dtos; break; | |
| 1323 default : ShouldNotReachHere(); | |
| 1324 } | |
| 1325 switch (bytecode()) { | |
| 1326 case Bytecodes::_l2i: // fall through | |
| 1327 case Bytecodes::_f2i: // fall through | |
| 1328 case Bytecodes::_d2i: // fall through | |
| 1329 case Bytecodes::_i2b: // fall through | |
| 1330 case Bytecodes::_i2c: // fall through | |
| 1331 case Bytecodes::_i2s: tos_out = itos; break; | |
| 1332 case Bytecodes::_i2l: // fall through | |
| 1333 case Bytecodes::_f2l: // fall through | |
| 1334 case Bytecodes::_d2l: tos_out = ltos; break; | |
| 1335 case Bytecodes::_i2f: // fall through | |
| 1336 case Bytecodes::_l2f: // fall through | |
| 1337 case Bytecodes::_d2f: tos_out = ftos; break; | |
| 1338 case Bytecodes::_i2d: // fall through | |
| 1339 case Bytecodes::_l2d: // fall through | |
| 1340 case Bytecodes::_f2d: tos_out = dtos; break; | |
| 1341 default : ShouldNotReachHere(); | |
| 1342 } | |
| 1343 transition(tos_in, tos_out); | |
| 1344 } | |
| 1345 #endif // ASSERT | |
| 1346 | |
| 1347 static const int64_t is_nan = 0x8000000000000000L; | |
| 1348 | |
| 1349 // Conversion | |
| 1350 switch (bytecode()) { | |
| 1351 case Bytecodes::_i2l: | |
| 1352 __ movslq(rax, rax); | |
| 1353 break; | |
| 1354 case Bytecodes::_i2f: | |
| 1355 __ cvtsi2ssl(xmm0, rax); | |
| 1356 break; | |
| 1357 case Bytecodes::_i2d: | |
| 1358 __ cvtsi2sdl(xmm0, rax); | |
| 1359 break; | |
| 1360 case Bytecodes::_i2b: | |
| 1361 __ movsbl(rax, rax); | |
| 1362 break; | |
| 1363 case Bytecodes::_i2c: | |
| 1364 __ movzwl(rax, rax); | |
| 1365 break; | |
| 1366 case Bytecodes::_i2s: | |
| 1367 __ movswl(rax, rax); | |
| 1368 break; | |
| 1369 case Bytecodes::_l2i: | |
| 1370 __ movl(rax, rax); | |
| 1371 break; | |
| 1372 case Bytecodes::_l2f: | |
| 1373 __ cvtsi2ssq(xmm0, rax); | |
| 1374 break; | |
| 1375 case Bytecodes::_l2d: | |
| 1376 __ cvtsi2sdq(xmm0, rax); | |
| 1377 break; | |
| 1378 case Bytecodes::_f2i: | |
| 1379 { | |
| 1380 Label L; | |
| 1381 __ cvttss2sil(rax, xmm0); | |
| 1382 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
| 1383 __ jcc(Assembler::notEqual, L); | |
| 1384 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2i), 1); | |
| 1385 __ bind(L); | |
| 1386 } | |
| 1387 break; | |
| 1388 case Bytecodes::_f2l: | |
| 1389 { | |
| 1390 Label L; | |
| 1391 __ cvttss2siq(rax, xmm0); | |
| 1392 // NaN or overflow/underflow? | |
| 1393 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
| 1394 __ jcc(Assembler::notEqual, L); | |
| 1395 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::f2l), 1); | |
| 1396 __ bind(L); | |
| 1397 } | |
| 1398 break; | |
| 1399 case Bytecodes::_f2d: | |
| 1400 __ cvtss2sd(xmm0, xmm0); | |
| 1401 break; | |
| 1402 case Bytecodes::_d2i: | |
| 1403 { | |
| 1404 Label L; | |
| 1405 __ cvttsd2sil(rax, xmm0); | |
| 1406 __ cmpl(rax, 0x80000000); // NaN or overflow/underflow? | |
| 1407 __ jcc(Assembler::notEqual, L); | |
| 1408 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2i), 1); | |
| 1409 __ bind(L); | |
| 1410 } | |
| 1411 break; | |
| 1412 case Bytecodes::_d2l: | |
| 1413 { | |
| 1414 Label L; | |
| 1415 __ cvttsd2siq(rax, xmm0); | |
| 1416 // NaN or overflow/underflow? | |
| 1417 __ cmp64(rax, ExternalAddress((address) &is_nan)); | |
| 1418 __ jcc(Assembler::notEqual, L); | |
| 1419 __ call_VM_leaf(CAST_FROM_FN_PTR(address, SharedRuntime::d2l), 1); | |
| 1420 __ bind(L); | |
| 1421 } | |
| 1422 break; | |
| 1423 case Bytecodes::_d2f: | |
| 1424 __ cvtsd2ss(xmm0, xmm0); | |
| 1425 break; | |
| 1426 default: | |
| 1427 ShouldNotReachHere(); | |
| 1428 } | |
| 1429 } | |
| 1430 | |
| 1431 void TemplateTable::lcmp() { | |
| 1432 transition(ltos, itos); | |
| 1433 Label done; | |
| 1434 __ pop_l(rdx); | |
| 1435 __ cmpq(rdx, rax); | |
| 1436 __ movl(rax, -1); | |
| 1437 __ jccb(Assembler::less, done); | |
| 1438 __ setb(Assembler::notEqual, rax); | |
| 1439 __ movzbl(rax, rax); | |
| 1440 __ bind(done); | |
| 1441 } | |
| 1442 | |
| 1443 void TemplateTable::float_cmp(bool is_float, int unordered_result) { | |
| 1444 Label done; | |
| 1445 if (is_float) { | |
| 1446 // XXX get rid of pop here, use ... reg, mem32 | |
| 1447 __ pop_f(xmm1); | |
| 1448 __ ucomiss(xmm1, xmm0); | |
| 1449 } else { | |
| 1450 // XXX get rid of pop here, use ... reg, mem64 | |
| 1451 __ pop_d(xmm1); | |
| 1452 __ ucomisd(xmm1, xmm0); | |
| 1453 } | |
| 1454 if (unordered_result < 0) { | |
| 1455 __ movl(rax, -1); | |
| 1456 __ jccb(Assembler::parity, done); | |
| 1457 __ jccb(Assembler::below, done); | |
| 1458 __ setb(Assembler::notEqual, rdx); | |
| 1459 __ movzbl(rax, rdx); | |
| 1460 } else { | |
| 1461 __ movl(rax, 1); | |
| 1462 __ jccb(Assembler::parity, done); | |
| 1463 __ jccb(Assembler::above, done); | |
| 1464 __ movl(rax, 0); | |
| 1465 __ jccb(Assembler::equal, done); | |
| 1466 __ decrementl(rax); | |
| 1467 } | |
| 1468 __ bind(done); | |
| 1469 } | |
| 1470 | |
| 1471 void TemplateTable::branch(bool is_jsr, bool is_wide) { | |
| 1472 __ get_method(rcx); // rcx holds method | |
| 1473 __ profile_taken_branch(rax, rbx); // rax holds updated MDP, rbx | |
| 1474 // holds bumped taken count | |
| 1475 | |
| 1476 const ByteSize be_offset = methodOopDesc::backedge_counter_offset() + | |
| 1477 InvocationCounter::counter_offset(); | |
| 1478 const ByteSize inv_offset = methodOopDesc::invocation_counter_offset() + | |
| 1479 InvocationCounter::counter_offset(); | |
| 1480 const int method_offset = frame::interpreter_frame_method_offset * wordSize; | |
| 1481 | |
| 1482 // Load up edx with the branch displacement | |
| 1483 __ movl(rdx, at_bcp(1)); | |
| 1484 __ bswapl(rdx); | |
| 1485 | |
| 1486 if (!is_wide) { | |
| 1487 __ sarl(rdx, 16); | |
| 1488 } | |
| 1489 __ movslq(rdx, rdx); | |
| 1490 | |
| 1491 // Handle all the JSR stuff here, then exit. | |
| 1492 // It's much shorter and cleaner than intermingling with the non-JSR | |
| 1493 // normal-branch stuff occuring below. | |
| 1494 if (is_jsr) { | |
| 1495 // Pre-load the next target bytecode into rbx | |
| 1496 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1, 0)); | |
| 1497 | |
| 1498 // compute return address as bci in rax | |
| 1499 __ leaq(rax, at_bcp((is_wide ? 5 : 3) - | |
| 1500 in_bytes(constMethodOopDesc::codes_offset()))); | |
| 1501 __ subq(rax, Address(rcx, methodOopDesc::const_offset())); | |
| 1502 // Adjust the bcp in r13 by the displacement in rdx | |
| 1503 __ addq(r13, rdx); | |
| 1504 // jsr returns atos that is not an oop | |
| 1505 __ push_i(rax); | |
| 1506 __ dispatch_only(vtos); | |
| 1507 return; | |
| 1508 } | |
| 1509 | |
| 1510 // Normal (non-jsr) branch handling | |
| 1511 | |
| 1512 // Adjust the bcp in r13 by the displacement in rdx | |
| 1513 __ addq(r13, rdx); | |
| 1514 | |
| 1515 assert(UseLoopCounter || !UseOnStackReplacement, | |
| 1516 "on-stack-replacement requires loop counters"); | |
| 1517 Label backedge_counter_overflow; | |
| 1518 Label profile_method; | |
| 1519 Label dispatch; | |
| 1520 if (UseLoopCounter) { | |
| 1521 // increment backedge counter for backward branches | |
| 1522 // rax: MDO | |
| 1523 // ebx: MDO bumped taken-count | |
| 1524 // rcx: method | |
| 1525 // rdx: target offset | |
| 1526 // r13: target bcp | |
| 1527 // r14: locals pointer | |
| 1528 __ testl(rdx, rdx); // check if forward or backward branch | |
| 1529 __ jcc(Assembler::positive, dispatch); // count only if backward branch | |
| 1530 | |
| 1531 // increment counter | |
| 1532 __ movl(rax, Address(rcx, be_offset)); // load backedge counter | |
| 1533 __ incrementl(rax, InvocationCounter::count_increment); // increment | |
| 1534 // counter | |
| 1535 __ movl(Address(rcx, be_offset), rax); // store counter | |
| 1536 | |
| 1537 __ movl(rax, Address(rcx, inv_offset)); // load invocation counter | |
| 1538 __ andl(rax, InvocationCounter::count_mask_value); // and the status bits | |
| 1539 __ addl(rax, Address(rcx, be_offset)); // add both counters | |
| 1540 | |
| 1541 if (ProfileInterpreter) { | |
| 1542 // Test to see if we should create a method data oop | |
| 1543 __ cmp32(rax, | |
| 1544 ExternalAddress((address) &InvocationCounter::InterpreterProfileLimit)); | |
| 1545 __ jcc(Assembler::less, dispatch); | |
| 1546 | |
| 1547 // if no method data exists, go to profile method | |
| 1548 __ test_method_data_pointer(rax, profile_method); | |
| 1549 | |
| 1550 if (UseOnStackReplacement) { | |
| 1551 // check for overflow against ebx which is the MDO taken count | |
| 1552 __ cmp32(rbx, | |
| 1553 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
| 1554 __ jcc(Assembler::below, dispatch); | |
| 1555 | |
| 1556 // When ProfileInterpreter is on, the backedge_count comes | |
| 1557 // from the methodDataOop, which value does not get reset on | |
| 1558 // the call to frequency_counter_overflow(). To avoid | |
| 1559 // excessive calls to the overflow routine while the method is | |
| 1560 // being compiled, add a second test to make sure the overflow | |
| 1561 // function is called only once every overflow_frequency. | |
| 1562 const int overflow_frequency = 1024; | |
| 1563 __ andl(rbx, overflow_frequency - 1); | |
| 1564 __ jcc(Assembler::zero, backedge_counter_overflow); | |
| 1565 | |
| 1566 } | |
| 1567 } else { | |
| 1568 if (UseOnStackReplacement) { | |
| 1569 // check for overflow against eax, which is the sum of the | |
| 1570 // counters | |
| 1571 __ cmp32(rax, | |
| 1572 ExternalAddress((address) &InvocationCounter::InterpreterBackwardBranchLimit)); | |
| 1573 __ jcc(Assembler::aboveEqual, backedge_counter_overflow); | |
| 1574 | |
| 1575 } | |
| 1576 } | |
| 1577 __ bind(dispatch); | |
| 1578 } | |
| 1579 | |
| 1580 // Pre-load the next target bytecode into rbx | |
| 1581 __ load_unsigned_byte(rbx, Address(r13, 0)); | |
| 1582 | |
| 1583 // continue with the bytecode @ target | |
| 1584 // eax: return bci for jsr's, unused otherwise | |
| 1585 // ebx: target bytecode | |
| 1586 // r13: target bcp | |
| 1587 __ dispatch_only(vtos); | |
| 1588 | |
| 1589 if (UseLoopCounter) { | |
| 1590 if (ProfileInterpreter) { | |
| 1591 // Out-of-line code to allocate method data oop. | |
| 1592 __ bind(profile_method); | |
| 1593 __ call_VM(noreg, | |
| 1594 CAST_FROM_FN_PTR(address, | |
| 1595 InterpreterRuntime::profile_method), r13); | |
| 1596 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
| 1597 __ movq(rcx, Address(rbp, method_offset)); | |
| 1598 __ movq(rcx, Address(rcx, | |
| 1599 in_bytes(methodOopDesc::method_data_offset()))); | |
| 1600 __ movq(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
| 1601 rcx); | |
| 1602 __ test_method_data_pointer(rcx, dispatch); | |
| 1603 // offset non-null mdp by MDO::data_offset() + IR::profile_method() | |
| 1604 __ addq(rcx, in_bytes(methodDataOopDesc::data_offset())); | |
| 1605 __ addq(rcx, rax); | |
| 1606 __ movq(Address(rbp, frame::interpreter_frame_mdx_offset * wordSize), | |
| 1607 rcx); | |
| 1608 __ jmp(dispatch); | |
| 1609 } | |
| 1610 | |
| 1611 if (UseOnStackReplacement) { | |
| 1612 // invocation counter overflow | |
| 1613 __ bind(backedge_counter_overflow); | |
| 1614 __ negq(rdx); | |
| 1615 __ addq(rdx, r13); // branch bcp | |
| 1616 // IcoResult frequency_counter_overflow([JavaThread*], address branch_bcp) | |
| 1617 __ call_VM(noreg, | |
| 1618 CAST_FROM_FN_PTR(address, | |
| 1619 InterpreterRuntime::frequency_counter_overflow), | |
| 1620 rdx); | |
| 1621 __ load_unsigned_byte(rbx, Address(r13, 0)); // restore target bytecode | |
| 1622 | |
| 1623 // rax: osr nmethod (osr ok) or NULL (osr not possible) | |
| 1624 // ebx: target bytecode | |
| 1625 // rdx: scratch | |
| 1626 // r14: locals pointer | |
| 1627 // r13: bcp | |
| 1628 __ testq(rax, rax); // test result | |
| 1629 __ jcc(Assembler::zero, dispatch); // no osr if null | |
| 1630 // nmethod may have been invalidated (VM may block upon call_VM return) | |
| 1631 __ movl(rcx, Address(rax, nmethod::entry_bci_offset())); | |
| 1632 __ cmpl(rcx, InvalidOSREntryBci); | |
| 1633 __ jcc(Assembler::equal, dispatch); | |
| 1634 | |
| 1635 // We have the address of an on stack replacement routine in eax | |
| 1636 // We need to prepare to execute the OSR method. First we must | |
| 1637 // migrate the locals and monitors off of the stack. | |
| 1638 | |
| 1639 __ movq(r13, rax); // save the nmethod | |
| 1640 | |
| 1641 call_VM(noreg, CAST_FROM_FN_PTR(address, SharedRuntime::OSR_migration_begin)); | |
| 1642 | |
| 1643 // eax is OSR buffer, move it to expected parameter location | |
| 1644 __ movq(j_rarg0, rax); | |
| 1645 | |
| 1646 // We use j_rarg definitions here so that registers don't conflict as parameter | |
| 1647 // registers change across platforms as we are in the midst of a calling | |
| 1648 // sequence to the OSR nmethod and we don't want collision. These are NOT parameters. | |
| 1649 | |
| 1650 const Register retaddr = j_rarg2; | |
| 1651 const Register sender_sp = j_rarg1; | |
| 1652 | |
| 1653 // pop the interpreter frame | |
| 1654 __ movq(sender_sp, Address(rbp, frame::interpreter_frame_sender_sp_offset * wordSize)); // get sender sp | |
| 1655 __ leave(); // remove frame anchor | |
| 1656 __ popq(retaddr); // get return address | |
| 1657 __ movq(rsp, sender_sp); // set sp to sender sp | |
| 1658 // Ensure compiled code always sees stack at proper alignment | |
| 1659 __ andq(rsp, -(StackAlignmentInBytes)); | |
| 1660 | |
| 1661 // unlike x86 we need no specialized return from compiled code | |
| 1662 // to the interpreter or the call stub. | |
| 1663 | |
| 1664 // push the return address | |
| 1665 __ pushq(retaddr); | |
| 1666 | |
| 1667 // and begin the OSR nmethod | |
| 1668 __ jmp(Address(r13, nmethod::osr_entry_point_offset())); | |
| 1669 } | |
| 1670 } | |
| 1671 } | |
| 1672 | |
| 1673 | |
| 1674 void TemplateTable::if_0cmp(Condition cc) { | |
| 1675 transition(itos, vtos); | |
| 1676 // assume branch is more often taken than not (loops use backward branches) | |
| 1677 Label not_taken; | |
| 1678 __ testl(rax, rax); | |
| 1679 __ jcc(j_not(cc), not_taken); | |
| 1680 branch(false, false); | |
| 1681 __ bind(not_taken); | |
| 1682 __ profile_not_taken_branch(rax); | |
| 1683 } | |
| 1684 | |
| 1685 void TemplateTable::if_icmp(Condition cc) { | |
| 1686 transition(itos, vtos); | |
| 1687 // assume branch is more often taken than not (loops use backward branches) | |
| 1688 Label not_taken; | |
| 1689 __ pop_i(rdx); | |
| 1690 __ cmpl(rdx, rax); | |
| 1691 __ jcc(j_not(cc), not_taken); | |
| 1692 branch(false, false); | |
| 1693 __ bind(not_taken); | |
| 1694 __ profile_not_taken_branch(rax); | |
| 1695 } | |
| 1696 | |
| 1697 void TemplateTable::if_nullcmp(Condition cc) { | |
| 1698 transition(atos, vtos); | |
| 1699 // assume branch is more often taken than not (loops use backward branches) | |
| 1700 Label not_taken; | |
| 1701 __ testq(rax, rax); | |
| 1702 __ jcc(j_not(cc), not_taken); | |
| 1703 branch(false, false); | |
| 1704 __ bind(not_taken); | |
| 1705 __ profile_not_taken_branch(rax); | |
| 1706 } | |
| 1707 | |
| 1708 void TemplateTable::if_acmp(Condition cc) { | |
| 1709 transition(atos, vtos); | |
| 1710 // assume branch is more often taken than not (loops use backward branches) | |
| 1711 Label not_taken; | |
| 1712 __ pop_ptr(rdx); | |
| 1713 __ cmpq(rdx, rax); | |
| 1714 __ jcc(j_not(cc), not_taken); | |
| 1715 branch(false, false); | |
| 1716 __ bind(not_taken); | |
| 1717 __ profile_not_taken_branch(rax); | |
| 1718 } | |
| 1719 | |
| 1720 void TemplateTable::ret() { | |
| 1721 transition(vtos, vtos); | |
| 1722 locals_index(rbx); | |
| 1723 __ movq(rbx, aaddress(rbx)); // get return bci, compute return bcp | |
| 1724 __ profile_ret(rbx, rcx); | |
| 1725 __ get_method(rax); | |
| 1726 __ movq(r13, Address(rax, methodOopDesc::const_offset())); | |
| 1727 __ leaq(r13, Address(r13, rbx, Address::times_1, | |
| 1728 constMethodOopDesc::codes_offset())); | |
| 1729 __ dispatch_next(vtos); | |
| 1730 } | |
| 1731 | |
| 1732 void TemplateTable::wide_ret() { | |
| 1733 transition(vtos, vtos); | |
| 1734 locals_index_wide(rbx); | |
| 1735 __ movq(rbx, aaddress(rbx)); // get return bci, compute return bcp | |
| 1736 __ profile_ret(rbx, rcx); | |
| 1737 __ get_method(rax); | |
| 1738 __ movq(r13, Address(rax, methodOopDesc::const_offset())); | |
| 1739 __ leaq(r13, Address(r13, rbx, Address::times_1, constMethodOopDesc::codes_offset())); | |
| 1740 __ dispatch_next(vtos); | |
| 1741 } | |
| 1742 | |
| 1743 void TemplateTable::tableswitch() { | |
| 1744 Label default_case, continue_execution; | |
| 1745 transition(itos, vtos); | |
| 1746 // align r13 | |
| 1747 __ leaq(rbx, at_bcp(BytesPerInt)); | |
| 1748 __ andq(rbx, -BytesPerInt); | |
| 1749 // load lo & hi | |
| 1750 __ movl(rcx, Address(rbx, BytesPerInt)); | |
| 1751 __ movl(rdx, Address(rbx, 2 * BytesPerInt)); | |
| 1752 __ bswapl(rcx); | |
| 1753 __ bswapl(rdx); | |
| 1754 // check against lo & hi | |
| 1755 __ cmpl(rax, rcx); | |
| 1756 __ jcc(Assembler::less, default_case); | |
| 1757 __ cmpl(rax, rdx); | |
| 1758 __ jcc(Assembler::greater, default_case); | |
| 1759 // lookup dispatch offset | |
| 1760 __ subl(rax, rcx); | |
| 1761 __ movl(rdx, Address(rbx, rax, Address::times_4, 3 * BytesPerInt)); | |
| 1762 __ profile_switch_case(rax, rbx, rcx); | |
| 1763 // continue execution | |
| 1764 __ bind(continue_execution); | |
| 1765 __ bswapl(rdx); | |
| 1766 __ movslq(rdx, rdx); | |
| 1767 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); | |
| 1768 __ addq(r13, rdx); | |
| 1769 __ dispatch_only(vtos); | |
| 1770 // handle default | |
| 1771 __ bind(default_case); | |
| 1772 __ profile_switch_default(rax); | |
| 1773 __ movl(rdx, Address(rbx, 0)); | |
| 1774 __ jmp(continue_execution); | |
| 1775 } | |
| 1776 | |
| 1777 void TemplateTable::lookupswitch() { | |
| 1778 transition(itos, itos); | |
| 1779 __ stop("lookupswitch bytecode should have been rewritten"); | |
| 1780 } | |
| 1781 | |
| 1782 void TemplateTable::fast_linearswitch() { | |
| 1783 transition(itos, vtos); | |
| 1784 Label loop_entry, loop, found, continue_execution; | |
| 1785 // bswap rax so we can avoid bswapping the table entries | |
| 1786 __ bswapl(rax); | |
| 1787 // align r13 | |
| 1788 __ leaq(rbx, at_bcp(BytesPerInt)); // btw: should be able to get rid of | |
| 1789 // this instruction (change offsets | |
| 1790 // below) | |
| 1791 __ andq(rbx, -BytesPerInt); | |
| 1792 // set counter | |
| 1793 __ movl(rcx, Address(rbx, BytesPerInt)); | |
| 1794 __ bswapl(rcx); | |
| 1795 __ jmpb(loop_entry); | |
| 1796 // table search | |
| 1797 __ bind(loop); | |
| 1798 __ cmpl(rax, Address(rbx, rcx, Address::times_8, 2 * BytesPerInt)); | |
| 1799 __ jcc(Assembler::equal, found); | |
| 1800 __ bind(loop_entry); | |
| 1801 __ decrementl(rcx); | |
| 1802 __ jcc(Assembler::greaterEqual, loop); | |
| 1803 // default case | |
| 1804 __ profile_switch_default(rax); | |
| 1805 __ movl(rdx, Address(rbx, 0)); | |
| 1806 __ jmp(continue_execution); | |
| 1807 // entry found -> get offset | |
| 1808 __ bind(found); | |
| 1809 __ movl(rdx, Address(rbx, rcx, Address::times_8, 3 * BytesPerInt)); | |
| 1810 __ profile_switch_case(rcx, rax, rbx); | |
| 1811 // continue execution | |
| 1812 __ bind(continue_execution); | |
| 1813 __ bswapl(rdx); | |
| 1814 __ movslq(rdx, rdx); | |
| 1815 __ load_unsigned_byte(rbx, Address(r13, rdx, Address::times_1)); | |
| 1816 __ addq(r13, rdx); | |
| 1817 __ dispatch_only(vtos); | |
| 1818 } | |
| 1819 | |
| 1820 void TemplateTable::fast_binaryswitch() { | |
| 1821 transition(itos, vtos); | |
| 1822 // Implementation using the following core algorithm: | |
| 1823 // | |
| 1824 // int binary_search(int key, LookupswitchPair* array, int n) { | |
| 1825 // // Binary search according to "Methodik des Programmierens" by | |
| 1826 // // Edsger W. Dijkstra and W.H.J. Feijen, Addison Wesley Germany 1985. | |
| 1827 // int i = 0; | |
| 1828 // int j = n; | |
| 1829 // while (i+1 < j) { | |
| 1830 // // invariant P: 0 <= i < j <= n and (a[i] <= key < a[j] or Q) | |
| 1831 // // with Q: for all i: 0 <= i < n: key < a[i] | |
| 1832 // // where a stands for the array and assuming that the (inexisting) | |
| 1833 // // element a[n] is infinitely big. | |
| 1834 // int h = (i + j) >> 1; | |
| 1835 // // i < h < j | |
| 1836 // if (key < array[h].fast_match()) { | |
| 1837 // j = h; | |
| 1838 // } else { | |
| 1839 // i = h; | |
| 1840 // } | |
| 1841 // } | |
| 1842 // // R: a[i] <= key < a[i+1] or Q | |
| 1843 // // (i.e., if key is within array, i is the correct index) | |
| 1844 // return i; | |
| 1845 // } | |
| 1846 | |
| 1847 // Register allocation | |
| 1848 const Register key = rax; // already set (tosca) | |
| 1849 const Register array = rbx; | |
| 1850 const Register i = rcx; | |
| 1851 const Register j = rdx; | |
| 1852 const Register h = rdi; | |
| 1853 const Register temp = rsi; | |
| 1854 | |
| 1855 // Find array start | |
| 1856 __ leaq(array, at_bcp(3 * BytesPerInt)); // btw: should be able to | |
| 1857 // get rid of this | |
| 1858 // instruction (change | |
| 1859 // offsets below) | |
| 1860 __ andq(array, -BytesPerInt); | |
| 1861 | |
| 1862 // Initialize i & j | |
| 1863 __ xorl(i, i); // i = 0; | |
| 1864 __ movl(j, Address(array, -BytesPerInt)); // j = length(array); | |
| 1865 | |
| 1866 // Convert j into native byteordering | |
| 1867 __ bswapl(j); | |
| 1868 | |
| 1869 // And start | |
| 1870 Label entry; | |
| 1871 __ jmp(entry); | |
| 1872 | |
| 1873 // binary search loop | |
| 1874 { | |
| 1875 Label loop; | |
| 1876 __ bind(loop); | |
| 1877 // int h = (i + j) >> 1; | |
| 1878 __ leal(h, Address(i, j, Address::times_1)); // h = i + j; | |
| 1879 __ sarl(h, 1); // h = (i + j) >> 1; | |
| 1880 // if (key < array[h].fast_match()) { | |
| 1881 // j = h; | |
| 1882 // } else { | |
| 1883 // i = h; | |
| 1884 // } | |
| 1885 // Convert array[h].match to native byte-ordering before compare | |
| 1886 __ movl(temp, Address(array, h, Address::times_8)); | |
| 1887 __ bswapl(temp); | |
| 1888 __ cmpl(key, temp); | |
| 1889 // j = h if (key < array[h].fast_match()) | |
| 1890 __ cmovl(Assembler::less, j, h); | |
| 1891 // i = h if (key >= array[h].fast_match()) | |
| 1892 __ cmovl(Assembler::greaterEqual, i, h); | |
| 1893 // while (i+1 < j) | |
| 1894 __ bind(entry); | |
| 1895 __ leal(h, Address(i, 1)); // i+1 | |
| 1896 __ cmpl(h, j); // i+1 < j | |
| 1897 __ jcc(Assembler::less, loop); | |
| 1898 } | |
| 1899 | |
| 1900 // end of binary search, result index is i (must check again!) | |
| 1901 Label default_case; | |
| 1902 // Convert array[i].match to native byte-ordering before compare | |
| 1903 __ movl(temp, Address(array, i, Address::times_8)); | |
| 1904 __ bswapl(temp); | |
| 1905 __ cmpl(key, temp); | |
| 1906 __ jcc(Assembler::notEqual, default_case); | |
| 1907 | |
| 1908 // entry found -> j = offset | |
| 1909 __ movl(j , Address(array, i, Address::times_8, BytesPerInt)); | |
| 1910 __ profile_switch_case(i, key, array); | |
| 1911 __ bswapl(j); | |
| 1912 __ movslq(j, j); | |
| 1913 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); | |
| 1914 __ addq(r13, j); | |
| 1915 __ dispatch_only(vtos); | |
| 1916 | |
| 1917 // default case -> j = default offset | |
| 1918 __ bind(default_case); | |
| 1919 __ profile_switch_default(i); | |
| 1920 __ movl(j, Address(array, -2 * BytesPerInt)); | |
| 1921 __ bswapl(j); | |
| 1922 __ movslq(j, j); | |
| 1923 __ load_unsigned_byte(rbx, Address(r13, j, Address::times_1)); | |
| 1924 __ addq(r13, j); | |
| 1925 __ dispatch_only(vtos); | |
| 1926 } | |
| 1927 | |
| 1928 | |
| 1929 void TemplateTable::_return(TosState state) { | |
| 1930 transition(state, state); | |
| 1931 assert(_desc->calls_vm(), | |
| 1932 "inconsistent calls_vm information"); // call in remove_activation | |
| 1933 | |
| 1934 if (_desc->bytecode() == Bytecodes::_return_register_finalizer) { | |
| 1935 assert(state == vtos, "only valid state"); | |
| 1936 __ movq(c_rarg1, aaddress(0)); | |
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1937 __ load_klass(rdi, c_rarg1); |
| 0 | 1938 __ movl(rdi, Address(rdi, Klass::access_flags_offset_in_bytes() + sizeof(oopDesc))); |
| 1939 __ testl(rdi, JVM_ACC_HAS_FINALIZER); | |
| 1940 Label skip_register_finalizer; | |
| 1941 __ jcc(Assembler::zero, skip_register_finalizer); | |
| 1942 | |
| 1943 __ call_VM(noreg, CAST_FROM_FN_PTR(address, InterpreterRuntime::register_finalizer), c_rarg1); | |
| 1944 | |
| 1945 __ bind(skip_register_finalizer); | |
| 1946 } | |
| 1947 | |
| 1948 __ remove_activation(state, r13); | |
| 1949 __ jmp(r13); | |
| 1950 } | |
| 1951 | |
| 1952 // ---------------------------------------------------------------------------- | |
| 1953 // Volatile variables demand their effects be made known to all CPU's | |
| 1954 // in order. Store buffers on most chips allow reads & writes to | |
| 1955 // reorder; the JMM's ReadAfterWrite.java test fails in -Xint mode | |
| 1956 // without some kind of memory barrier (i.e., it's not sufficient that | |
| 1957 // the interpreter does not reorder volatile references, the hardware | |
| 1958 // also must not reorder them). | |
| 1959 // | |
| 1960 // According to the new Java Memory Model (JMM): | |
| 1961 // (1) All volatiles are serialized wrt to each other. ALSO reads & | |
| 1962 // writes act as aquire & release, so: | |
| 1963 // (2) A read cannot let unrelated NON-volatile memory refs that | |
| 1964 // happen after the read float up to before the read. It's OK for | |
| 1965 // non-volatile memory refs that happen before the volatile read to | |
| 1966 // float down below it. | |
| 1967 // (3) Similar a volatile write cannot let unrelated NON-volatile | |
| 1968 // memory refs that happen BEFORE the write float down to after the | |
| 1969 // write. It's OK for non-volatile memory refs that happen after the | |
| 1970 // volatile write to float up before it. | |
| 1971 // | |
| 1972 // We only put in barriers around volatile refs (they are expensive), | |
| 1973 // not _between_ memory refs (that would require us to track the | |
| 1974 // flavor of the previous memory refs). Requirements (2) and (3) | |
| 1975 // require some barriers before volatile stores and after volatile | |
| 1976 // loads. These nearly cover requirement (1) but miss the | |
| 1977 // volatile-store-volatile-load case. This final case is placed after | |
| 1978 // volatile-stores although it could just as well go before | |
| 1979 // volatile-loads. | |
| 1980 void TemplateTable::volatile_barrier(Assembler::Membar_mask_bits | |
| 1981 order_constraint) { | |
| 1982 // Helper function to insert a is-volatile test and memory barrier | |
| 1983 if (os::is_MP()) { // Not needed on single CPU | |
| 1984 __ membar(order_constraint); | |
| 1985 } | |
| 1986 } | |
| 1987 | |
| 1988 void TemplateTable::resolve_cache_and_index(int byte_no, | |
| 1989 Register Rcache, | |
| 1990 Register index) { | |
| 1991 assert(byte_no == 1 || byte_no == 2, "byte_no out of range"); | |
| 1992 | |
| 1993 const Register temp = rbx; | |
| 1994 assert_different_registers(Rcache, index, temp); | |
| 1995 | |
| 1996 const int shift_count = (1 + byte_no) * BitsPerByte; | |
| 1997 Label resolved; | |
| 1998 __ get_cache_and_index_at_bcp(Rcache, index, 1); | |
| 1999 __ movl(temp, Address(Rcache, | |
| 2000 index, Address::times_8, | |
| 2001 constantPoolCacheOopDesc::base_offset() + | |
| 2002 ConstantPoolCacheEntry::indices_offset())); | |
| 2003 __ shrl(temp, shift_count); | |
| 2004 // have we resolved this bytecode? | |
| 2005 __ andl(temp, 0xFF); | |
| 2006 __ cmpl(temp, (int) bytecode()); | |
| 2007 __ jcc(Assembler::equal, resolved); | |
| 2008 | |
| 2009 // resolve first time through | |
| 2010 address entry; | |
| 2011 switch (bytecode()) { | |
| 2012 case Bytecodes::_getstatic: | |
| 2013 case Bytecodes::_putstatic: | |
| 2014 case Bytecodes::_getfield: | |
| 2015 case Bytecodes::_putfield: | |
| 2016 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_get_put); | |
| 2017 break; | |
| 2018 case Bytecodes::_invokevirtual: | |
| 2019 case Bytecodes::_invokespecial: | |
| 2020 case Bytecodes::_invokestatic: | |
| 2021 case Bytecodes::_invokeinterface: | |
| 2022 entry = CAST_FROM_FN_PTR(address, InterpreterRuntime::resolve_invoke); | |
| 2023 break; | |
| 2024 default: | |
| 2025 ShouldNotReachHere(); | |
| 2026 break; | |
| 2027 } | |
| 2028 __ movl(temp, (int) bytecode()); | |
| 2029 __ call_VM(noreg, entry, temp); | |
| 2030 | |
| 2031 // Update registers with resolved info | |
| 2032 __ get_cache_and_index_at_bcp(Rcache, index, 1); | |
| 2033 __ bind(resolved); | |
| 2034 } | |
| 2035 | |
| 2036 // The Rcache and index registers must be set before call | |
| 2037 void TemplateTable::load_field_cp_cache_entry(Register obj, | |
| 2038 Register cache, | |
| 2039 Register index, | |
| 2040 Register off, | |
| 2041 Register flags, | |
| 2042 bool is_static = false) { | |
| 2043 assert_different_registers(cache, index, flags, off); | |
| 2044 | |
| 2045 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
| 2046 // Field offset | |
| 2047 __ movq(off, Address(cache, index, Address::times_8, | |
| 2048 in_bytes(cp_base_offset + | |
| 2049 ConstantPoolCacheEntry::f2_offset()))); | |
| 2050 // Flags | |
| 2051 __ movl(flags, Address(cache, index, Address::times_8, | |
| 2052 in_bytes(cp_base_offset + | |
| 2053 ConstantPoolCacheEntry::flags_offset()))); | |
| 2054 | |
| 2055 // klass overwrite register | |
| 2056 if (is_static) { | |
| 2057 __ movq(obj, Address(cache, index, Address::times_8, | |
| 2058 in_bytes(cp_base_offset + | |
| 2059 ConstantPoolCacheEntry::f1_offset()))); | |
| 2060 } | |
| 2061 } | |
| 2062 | |
| 2063 void TemplateTable::load_invoke_cp_cache_entry(int byte_no, | |
| 2064 Register method, | |
| 2065 Register itable_index, | |
| 2066 Register flags, | |
| 2067 bool is_invokevirtual, | |
| 2068 bool is_invokevfinal /*unused*/) { | |
| 2069 // setup registers | |
| 2070 const Register cache = rcx; | |
| 2071 const Register index = rdx; | |
| 2072 assert_different_registers(method, flags); | |
| 2073 assert_different_registers(method, cache, index); | |
| 2074 assert_different_registers(itable_index, flags); | |
| 2075 assert_different_registers(itable_index, cache, index); | |
| 2076 // determine constant pool cache field offsets | |
| 2077 const int method_offset = in_bytes( | |
| 2078 constantPoolCacheOopDesc::base_offset() + | |
| 2079 (is_invokevirtual | |
| 2080 ? ConstantPoolCacheEntry::f2_offset() | |
| 2081 : ConstantPoolCacheEntry::f1_offset())); | |
| 2082 const int flags_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2083 ConstantPoolCacheEntry::flags_offset()); | |
| 2084 // access constant pool cache fields | |
| 2085 const int index_offset = in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2086 ConstantPoolCacheEntry::f2_offset()); | |
| 2087 | |
| 2088 resolve_cache_and_index(byte_no, cache, index); | |
| 2089 | |
| 2090 assert(wordSize == 8, "adjust code below"); | |
| 2091 __ movq(method, Address(cache, index, Address::times_8, method_offset)); | |
| 2092 if (itable_index != noreg) { | |
| 2093 __ movq(itable_index, | |
| 2094 Address(cache, index, Address::times_8, index_offset)); | |
| 2095 } | |
| 2096 __ movl(flags , Address(cache, index, Address::times_8, flags_offset)); | |
| 2097 } | |
| 2098 | |
| 2099 | |
| 2100 // The registers cache and index expected to be set before call. | |
| 2101 // Correct values of the cache and index registers are preserved. | |
| 2102 void TemplateTable::jvmti_post_field_access(Register cache, Register index, | |
| 2103 bool is_static, bool has_tos) { | |
| 2104 // do the JVMTI work here to avoid disturbing the register state below | |
| 2105 // We use c_rarg registers here because we want to use the register used in | |
| 2106 // the call to the VM | |
| 2107 if (JvmtiExport::can_post_field_access()) { | |
| 2108 // Check to see if a field access watch has been set before we | |
| 2109 // take the time to call into the VM. | |
| 2110 Label L1; | |
| 2111 assert_different_registers(cache, index, rax); | |
| 2112 __ mov32(rax, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
| 2113 __ testl(rax, rax); | |
| 2114 __ jcc(Assembler::zero, L1); | |
| 2115 | |
| 2116 __ get_cache_and_index_at_bcp(c_rarg2, c_rarg3, 1); | |
| 2117 | |
| 2118 // cache entry pointer | |
| 2119 __ addq(c_rarg2, in_bytes(constantPoolCacheOopDesc::base_offset())); | |
| 2120 __ shll(c_rarg3, LogBytesPerWord); | |
| 2121 __ addq(c_rarg2, c_rarg3); | |
| 2122 if (is_static) { | |
| 2123 __ xorl(c_rarg1, c_rarg1); // NULL object reference | |
| 2124 } else { | |
| 2125 __ movq(c_rarg1, at_tos()); // get object pointer without popping it | |
| 2126 __ verify_oop(c_rarg1); | |
| 2127 } | |
| 2128 // c_rarg1: object pointer or NULL | |
| 2129 // c_rarg2: cache entry pointer | |
| 2130 // c_rarg3: jvalue object on the stack | |
| 2131 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 2132 InterpreterRuntime::post_field_access), | |
| 2133 c_rarg1, c_rarg2, c_rarg3); | |
| 2134 __ get_cache_and_index_at_bcp(cache, index, 1); | |
| 2135 __ bind(L1); | |
| 2136 } | |
| 2137 } | |
| 2138 | |
| 2139 void TemplateTable::pop_and_check_object(Register r) { | |
| 2140 __ pop_ptr(r); | |
| 2141 __ null_check(r); // for field access must check obj. | |
| 2142 __ verify_oop(r); | |
| 2143 } | |
| 2144 | |
| 2145 void TemplateTable::getfield_or_static(int byte_no, bool is_static) { | |
| 2146 transition(vtos, vtos); | |
| 2147 | |
| 2148 const Register cache = rcx; | |
| 2149 const Register index = rdx; | |
| 2150 const Register obj = c_rarg3; | |
| 2151 const Register off = rbx; | |
| 2152 const Register flags = rax; | |
| 2153 const Register bc = c_rarg3; // uses same reg as obj, so don't mix them | |
| 2154 | |
| 2155 resolve_cache_and_index(byte_no, cache, index); | |
| 2156 jvmti_post_field_access(cache, index, is_static, false); | |
| 2157 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
| 2158 | |
| 2159 if (!is_static) { | |
| 2160 // obj is on the stack | |
| 2161 pop_and_check_object(obj); | |
| 2162 } | |
| 2163 | |
| 2164 const Address field(obj, off, Address::times_1); | |
| 2165 | |
| 2166 Label Done, notByte, notInt, notShort, notChar, | |
| 2167 notLong, notFloat, notObj, notDouble; | |
| 2168 | |
| 2169 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
| 2170 assert(btos == 0, "change code, btos != 0"); | |
| 2171 | |
| 2172 __ andl(flags, 0x0F); | |
| 2173 __ jcc(Assembler::notZero, notByte); | |
| 2174 // btos | |
| 2175 __ load_signed_byte(rax, field); | |
| 2176 __ push(btos); | |
| 2177 // Rewrite bytecode to be faster | |
| 2178 if (!is_static) { | |
| 2179 patch_bytecode(Bytecodes::_fast_bgetfield, bc, rbx); | |
| 2180 } | |
| 2181 __ jmp(Done); | |
| 2182 | |
| 2183 __ bind(notByte); | |
| 2184 __ cmpl(flags, atos); | |
| 2185 __ jcc(Assembler::notEqual, notObj); | |
| 2186 // atos | |
|
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|
2187 __ load_heap_oop(rax, field); |
| 0 | 2188 __ push(atos); |
| 2189 if (!is_static) { | |
| 2190 patch_bytecode(Bytecodes::_fast_agetfield, bc, rbx); | |
| 2191 } | |
| 2192 __ jmp(Done); | |
| 2193 | |
| 2194 __ bind(notObj); | |
| 2195 __ cmpl(flags, itos); | |
| 2196 __ jcc(Assembler::notEqual, notInt); | |
| 2197 // itos | |
| 2198 __ movl(rax, field); | |
| 2199 __ push(itos); | |
| 2200 // Rewrite bytecode to be faster | |
| 2201 if (!is_static) { | |
| 2202 patch_bytecode(Bytecodes::_fast_igetfield, bc, rbx); | |
| 2203 } | |
| 2204 __ jmp(Done); | |
| 2205 | |
| 2206 __ bind(notInt); | |
| 2207 __ cmpl(flags, ctos); | |
| 2208 __ jcc(Assembler::notEqual, notChar); | |
| 2209 // ctos | |
| 2210 __ load_unsigned_word(rax, field); | |
| 2211 __ push(ctos); | |
| 2212 // Rewrite bytecode to be faster | |
| 2213 if (!is_static) { | |
| 2214 patch_bytecode(Bytecodes::_fast_cgetfield, bc, rbx); | |
| 2215 } | |
| 2216 __ jmp(Done); | |
| 2217 | |
| 2218 __ bind(notChar); | |
| 2219 __ cmpl(flags, stos); | |
| 2220 __ jcc(Assembler::notEqual, notShort); | |
| 2221 // stos | |
| 2222 __ load_signed_word(rax, field); | |
| 2223 __ push(stos); | |
| 2224 // Rewrite bytecode to be faster | |
| 2225 if (!is_static) { | |
| 2226 patch_bytecode(Bytecodes::_fast_sgetfield, bc, rbx); | |
| 2227 } | |
| 2228 __ jmp(Done); | |
| 2229 | |
| 2230 __ bind(notShort); | |
| 2231 __ cmpl(flags, ltos); | |
| 2232 __ jcc(Assembler::notEqual, notLong); | |
| 2233 // ltos | |
| 2234 __ movq(rax, field); | |
| 2235 __ push(ltos); | |
| 2236 // Rewrite bytecode to be faster | |
| 2237 if (!is_static) { | |
| 2238 patch_bytecode(Bytecodes::_fast_lgetfield, bc, rbx); | |
| 2239 } | |
| 2240 __ jmp(Done); | |
| 2241 | |
| 2242 __ bind(notLong); | |
| 2243 __ cmpl(flags, ftos); | |
| 2244 __ jcc(Assembler::notEqual, notFloat); | |
| 2245 // ftos | |
| 2246 __ movflt(xmm0, field); | |
| 2247 __ push(ftos); | |
| 2248 // Rewrite bytecode to be faster | |
| 2249 if (!is_static) { | |
| 2250 patch_bytecode(Bytecodes::_fast_fgetfield, bc, rbx); | |
| 2251 } | |
| 2252 __ jmp(Done); | |
| 2253 | |
| 2254 __ bind(notFloat); | |
| 2255 #ifdef ASSERT | |
| 2256 __ cmpl(flags, dtos); | |
| 2257 __ jcc(Assembler::notEqual, notDouble); | |
| 2258 #endif | |
| 2259 // dtos | |
| 2260 __ movdbl(xmm0, field); | |
| 2261 __ push(dtos); | |
| 2262 // Rewrite bytecode to be faster | |
| 2263 if (!is_static) { | |
| 2264 patch_bytecode(Bytecodes::_fast_dgetfield, bc, rbx); | |
| 2265 } | |
| 2266 #ifdef ASSERT | |
| 2267 __ jmp(Done); | |
| 2268 | |
| 2269 __ bind(notDouble); | |
| 2270 __ stop("Bad state"); | |
| 2271 #endif | |
| 2272 | |
| 2273 __ bind(Done); | |
| 2274 // [jk] not needed currently | |
| 2275 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadLoad | | |
| 2276 // Assembler::LoadStore)); | |
| 2277 } | |
| 2278 | |
| 2279 | |
| 2280 void TemplateTable::getfield(int byte_no) { | |
| 2281 getfield_or_static(byte_no, false); | |
| 2282 } | |
| 2283 | |
| 2284 void TemplateTable::getstatic(int byte_no) { | |
| 2285 getfield_or_static(byte_no, true); | |
| 2286 } | |
| 2287 | |
| 2288 // The registers cache and index expected to be set before call. | |
| 2289 // The function may destroy various registers, just not the cache and index registers. | |
| 2290 void TemplateTable::jvmti_post_field_mod(Register cache, Register index, bool is_static) { | |
| 2291 transition(vtos, vtos); | |
| 2292 | |
| 2293 ByteSize cp_base_offset = constantPoolCacheOopDesc::base_offset(); | |
| 2294 | |
| 2295 if (JvmtiExport::can_post_field_modification()) { | |
| 2296 // Check to see if a field modification watch has been set before | |
| 2297 // we take the time to call into the VM. | |
| 2298 Label L1; | |
| 2299 assert_different_registers(cache, index, rax); | |
| 2300 __ mov32(rax, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
| 2301 __ testl(rax, rax); | |
| 2302 __ jcc(Assembler::zero, L1); | |
| 2303 | |
| 2304 __ get_cache_and_index_at_bcp(c_rarg2, rscratch1, 1); | |
| 2305 | |
| 2306 if (is_static) { | |
| 2307 // Life is simple. Null out the object pointer. | |
| 2308 __ xorl(c_rarg1, c_rarg1); | |
| 2309 } else { | |
| 2310 // Life is harder. The stack holds the value on top, followed by | |
| 2311 // the object. We don't know the size of the value, though; it | |
| 2312 // could be one or two words depending on its type. As a result, | |
| 2313 // we must find the type to determine where the object is. | |
| 2314 __ movl(c_rarg3, Address(c_rarg2, rscratch1, | |
| 2315 Address::times_8, | |
| 2316 in_bytes(cp_base_offset + | |
| 2317 ConstantPoolCacheEntry::flags_offset()))); | |
| 2318 __ shrl(c_rarg3, ConstantPoolCacheEntry::tosBits); | |
| 2319 // Make sure we don't need to mask rcx for tosBits after the | |
| 2320 // above shift | |
| 2321 ConstantPoolCacheEntry::verify_tosBits(); | |
| 2322 __ movq(c_rarg1, at_tos_p1()); // initially assume a one word jvalue | |
| 2323 __ cmpl(c_rarg3, ltos); | |
| 2324 __ cmovq(Assembler::equal, | |
| 2325 c_rarg1, at_tos_p2()); // ltos (two word jvalue) | |
| 2326 __ cmpl(c_rarg3, dtos); | |
| 2327 __ cmovq(Assembler::equal, | |
| 2328 c_rarg1, at_tos_p2()); // dtos (two word jvalue) | |
| 2329 } | |
| 2330 // cache entry pointer | |
| 2331 __ addq(c_rarg2, in_bytes(cp_base_offset)); | |
| 2332 __ shll(rscratch1, LogBytesPerWord); | |
| 2333 __ addq(c_rarg2, rscratch1); | |
| 2334 // object (tos) | |
| 2335 __ movq(c_rarg3, rsp); | |
| 2336 // c_rarg1: object pointer set up above (NULL if static) | |
| 2337 // c_rarg2: cache entry pointer | |
| 2338 // c_rarg3: jvalue object on the stack | |
| 2339 __ call_VM(noreg, | |
| 2340 CAST_FROM_FN_PTR(address, | |
| 2341 InterpreterRuntime::post_field_modification), | |
| 2342 c_rarg1, c_rarg2, c_rarg3); | |
| 2343 __ get_cache_and_index_at_bcp(cache, index, 1); | |
| 2344 __ bind(L1); | |
| 2345 } | |
| 2346 } | |
| 2347 | |
| 2348 void TemplateTable::putfield_or_static(int byte_no, bool is_static) { | |
| 2349 transition(vtos, vtos); | |
| 2350 | |
| 2351 const Register cache = rcx; | |
| 2352 const Register index = rdx; | |
| 2353 const Register obj = rcx; | |
| 2354 const Register off = rbx; | |
| 2355 const Register flags = rax; | |
| 2356 const Register bc = c_rarg3; | |
| 2357 | |
| 2358 resolve_cache_and_index(byte_no, cache, index); | |
| 2359 jvmti_post_field_mod(cache, index, is_static); | |
| 2360 load_field_cp_cache_entry(obj, cache, index, off, flags, is_static); | |
| 2361 | |
| 2362 // [jk] not needed currently | |
| 2363 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
| 2364 // Assembler::StoreStore)); | |
| 2365 | |
| 2366 Label notVolatile, Done; | |
| 2367 __ movl(rdx, flags); | |
| 2368 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
| 2369 __ andl(rdx, 0x1); | |
| 2370 | |
| 2371 // field address | |
| 2372 const Address field(obj, off, Address::times_1); | |
| 2373 | |
| 2374 Label notByte, notInt, notShort, notChar, | |
| 2375 notLong, notFloat, notObj, notDouble; | |
| 2376 | |
| 2377 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
| 2378 | |
| 2379 assert(btos == 0, "change code, btos != 0"); | |
| 2380 __ andl(flags, 0x0f); | |
| 2381 __ jcc(Assembler::notZero, notByte); | |
| 2382 // btos | |
| 2383 __ pop(btos); | |
| 2384 if (!is_static) pop_and_check_object(obj); | |
| 2385 __ movb(field, rax); | |
| 2386 if (!is_static) { | |
| 2387 patch_bytecode(Bytecodes::_fast_bputfield, bc, rbx); | |
| 2388 } | |
| 2389 __ jmp(Done); | |
| 2390 | |
| 2391 __ bind(notByte); | |
| 2392 __ cmpl(flags, atos); | |
| 2393 __ jcc(Assembler::notEqual, notObj); | |
| 2394 // atos | |
| 2395 __ pop(atos); | |
| 2396 if (!is_static) pop_and_check_object(obj); | |
|
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2397 __ store_heap_oop(field, rax); |
| 0 | 2398 __ store_check(obj, field); // Need to mark card |
| 2399 if (!is_static) { | |
| 2400 patch_bytecode(Bytecodes::_fast_aputfield, bc, rbx); | |
| 2401 } | |
| 2402 __ jmp(Done); | |
| 2403 | |
| 2404 __ bind(notObj); | |
| 2405 __ cmpl(flags, itos); | |
| 2406 __ jcc(Assembler::notEqual, notInt); | |
| 2407 // itos | |
| 2408 __ pop(itos); | |
| 2409 if (!is_static) pop_and_check_object(obj); | |
| 2410 __ movl(field, rax); | |
| 2411 if (!is_static) { | |
| 2412 patch_bytecode(Bytecodes::_fast_iputfield, bc, rbx); | |
| 2413 } | |
| 2414 __ jmp(Done); | |
| 2415 | |
| 2416 __ bind(notInt); | |
| 2417 __ cmpl(flags, ctos); | |
| 2418 __ jcc(Assembler::notEqual, notChar); | |
| 2419 // ctos | |
| 2420 __ pop(ctos); | |
| 2421 if (!is_static) pop_and_check_object(obj); | |
| 2422 __ movw(field, rax); | |
| 2423 if (!is_static) { | |
| 2424 patch_bytecode(Bytecodes::_fast_cputfield, bc, rbx); | |
| 2425 } | |
| 2426 __ jmp(Done); | |
| 2427 | |
| 2428 __ bind(notChar); | |
| 2429 __ cmpl(flags, stos); | |
| 2430 __ jcc(Assembler::notEqual, notShort); | |
| 2431 // stos | |
| 2432 __ pop(stos); | |
| 2433 if (!is_static) pop_and_check_object(obj); | |
| 2434 __ movw(field, rax); | |
| 2435 if (!is_static) { | |
| 2436 patch_bytecode(Bytecodes::_fast_sputfield, bc, rbx); | |
| 2437 } | |
| 2438 __ jmp(Done); | |
| 2439 | |
| 2440 __ bind(notShort); | |
| 2441 __ cmpl(flags, ltos); | |
| 2442 __ jcc(Assembler::notEqual, notLong); | |
| 2443 // ltos | |
| 2444 __ pop(ltos); | |
| 2445 if (!is_static) pop_and_check_object(obj); | |
| 2446 __ movq(field, rax); | |
| 2447 if (!is_static) { | |
| 2448 patch_bytecode(Bytecodes::_fast_lputfield, bc, rbx); | |
| 2449 } | |
| 2450 __ jmp(Done); | |
| 2451 | |
| 2452 __ bind(notLong); | |
| 2453 __ cmpl(flags, ftos); | |
| 2454 __ jcc(Assembler::notEqual, notFloat); | |
| 2455 // ftos | |
| 2456 __ pop(ftos); | |
| 2457 if (!is_static) pop_and_check_object(obj); | |
| 2458 __ movflt(field, xmm0); | |
| 2459 if (!is_static) { | |
| 2460 patch_bytecode(Bytecodes::_fast_fputfield, bc, rbx); | |
| 2461 } | |
| 2462 __ jmp(Done); | |
| 2463 | |
| 2464 __ bind(notFloat); | |
| 2465 #ifdef ASSERT | |
| 2466 __ cmpl(flags, dtos); | |
| 2467 __ jcc(Assembler::notEqual, notDouble); | |
| 2468 #endif | |
| 2469 // dtos | |
| 2470 __ pop(dtos); | |
| 2471 if (!is_static) pop_and_check_object(obj); | |
| 2472 __ movdbl(field, xmm0); | |
| 2473 if (!is_static) { | |
| 2474 patch_bytecode(Bytecodes::_fast_dputfield, bc, rbx); | |
| 2475 } | |
| 2476 | |
| 2477 #ifdef ASSERT | |
| 2478 __ jmp(Done); | |
| 2479 | |
| 2480 __ bind(notDouble); | |
| 2481 __ stop("Bad state"); | |
| 2482 #endif | |
| 2483 | |
| 2484 __ bind(Done); | |
| 2485 // Check for volatile store | |
| 2486 __ testl(rdx, rdx); | |
| 2487 __ jcc(Assembler::zero, notVolatile); | |
| 2488 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
| 2489 Assembler::StoreStore)); | |
| 2490 | |
| 2491 __ bind(notVolatile); | |
| 2492 } | |
| 2493 | |
| 2494 void TemplateTable::putfield(int byte_no) { | |
| 2495 putfield_or_static(byte_no, false); | |
| 2496 } | |
| 2497 | |
| 2498 void TemplateTable::putstatic(int byte_no) { | |
| 2499 putfield_or_static(byte_no, true); | |
| 2500 } | |
| 2501 | |
| 2502 void TemplateTable::jvmti_post_fast_field_mod() { | |
| 2503 if (JvmtiExport::can_post_field_modification()) { | |
| 2504 // Check to see if a field modification watch has been set before | |
| 2505 // we take the time to call into the VM. | |
| 2506 Label L2; | |
| 2507 __ mov32(c_rarg3, ExternalAddress((address)JvmtiExport::get_field_modification_count_addr())); | |
| 2508 __ testl(c_rarg3, c_rarg3); | |
| 2509 __ jcc(Assembler::zero, L2); | |
| 2510 __ pop_ptr(rbx); // copy the object pointer from tos | |
| 2511 __ verify_oop(rbx); | |
| 2512 __ push_ptr(rbx); // put the object pointer back on tos | |
| 2513 __ subq(rsp, sizeof(jvalue)); // add space for a jvalue object | |
| 2514 __ movq(c_rarg3, rsp); | |
| 2515 const Address field(c_rarg3, 0); | |
| 2516 | |
| 2517 switch (bytecode()) { // load values into the jvalue object | |
|
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2518 case Bytecodes::_fast_aputfield: __ movq(field, rax); break; |
| 0 | 2519 case Bytecodes::_fast_lputfield: __ movq(field, rax); break; |
| 2520 case Bytecodes::_fast_iputfield: __ movl(field, rax); break; | |
| 2521 case Bytecodes::_fast_bputfield: __ movb(field, rax); break; | |
| 2522 case Bytecodes::_fast_sputfield: // fall through | |
| 2523 case Bytecodes::_fast_cputfield: __ movw(field, rax); break; | |
| 2524 case Bytecodes::_fast_fputfield: __ movflt(field, xmm0); break; | |
| 2525 case Bytecodes::_fast_dputfield: __ movdbl(field, xmm0); break; | |
| 2526 default: | |
| 2527 ShouldNotReachHere(); | |
| 2528 } | |
| 2529 | |
| 2530 // Save rax because call_VM() will clobber it, then use it for | |
| 2531 // JVMTI purposes | |
| 2532 __ pushq(rax); | |
| 2533 // access constant pool cache entry | |
| 2534 __ get_cache_entry_pointer_at_bcp(c_rarg2, rax, 1); | |
| 2535 __ verify_oop(rbx); | |
| 2536 // rbx: object pointer copied above | |
| 2537 // c_rarg2: cache entry pointer | |
| 2538 // c_rarg3: jvalue object on the stack | |
| 2539 __ call_VM(noreg, | |
| 2540 CAST_FROM_FN_PTR(address, | |
| 2541 InterpreterRuntime::post_field_modification), | |
| 2542 rbx, c_rarg2, c_rarg3); | |
| 2543 __ popq(rax); // restore lower value | |
| 2544 __ addq(rsp, sizeof(jvalue)); // release jvalue object space | |
| 2545 __ bind(L2); | |
| 2546 } | |
| 2547 } | |
| 2548 | |
| 2549 void TemplateTable::fast_storefield(TosState state) { | |
| 2550 transition(state, vtos); | |
| 2551 | |
| 2552 ByteSize base = constantPoolCacheOopDesc::base_offset(); | |
| 2553 | |
| 2554 jvmti_post_fast_field_mod(); | |
| 2555 | |
| 2556 // access constant pool cache | |
| 2557 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
| 2558 | |
| 2559 // test for volatile with rdx | |
| 2560 __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
| 2561 in_bytes(base + | |
| 2562 ConstantPoolCacheEntry::flags_offset()))); | |
| 2563 | |
| 2564 // replace index with field offset from cache entry | |
| 2565 __ movq(rbx, Address(rcx, rbx, Address::times_8, | |
| 2566 in_bytes(base + ConstantPoolCacheEntry::f2_offset()))); | |
| 2567 | |
| 2568 // [jk] not needed currently | |
| 2569 // volatile_barrier(Assembler::Membar_mask_bits(Assembler::LoadStore | | |
| 2570 // Assembler::StoreStore)); | |
| 2571 | |
| 2572 Label notVolatile; | |
| 2573 __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
| 2574 __ andl(rdx, 0x1); | |
| 2575 | |
| 2576 // Get object from stack | |
| 2577 pop_and_check_object(rcx); | |
| 2578 | |
| 2579 // field address | |
| 2580 const Address field(rcx, rbx, Address::times_1); | |
| 2581 | |
| 2582 // access field | |
| 2583 switch (bytecode()) { | |
| 2584 case Bytecodes::_fast_aputfield: | |
|
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2585 __ store_heap_oop(field, rax); |
| 0 | 2586 __ store_check(rcx, field); |
| 2587 break; | |
| 2588 case Bytecodes::_fast_lputfield: | |
| 2589 __ movq(field, rax); | |
| 2590 break; | |
| 2591 case Bytecodes::_fast_iputfield: | |
| 2592 __ movl(field, rax); | |
| 2593 break; | |
| 2594 case Bytecodes::_fast_bputfield: | |
| 2595 __ movb(field, rax); | |
| 2596 break; | |
| 2597 case Bytecodes::_fast_sputfield: | |
| 2598 // fall through | |
| 2599 case Bytecodes::_fast_cputfield: | |
| 2600 __ movw(field, rax); | |
| 2601 break; | |
| 2602 case Bytecodes::_fast_fputfield: | |
| 2603 __ movflt(field, xmm0); | |
| 2604 break; | |
| 2605 case Bytecodes::_fast_dputfield: | |
| 2606 __ movdbl(field, xmm0); | |
| 2607 break; | |
| 2608 default: | |
| 2609 ShouldNotReachHere(); | |
| 2610 } | |
| 2611 | |
| 2612 // Check for volatile store | |
| 2613 __ testl(rdx, rdx); | |
| 2614 __ jcc(Assembler::zero, notVolatile); | |
| 2615 volatile_barrier(Assembler::Membar_mask_bits(Assembler::StoreLoad | | |
| 2616 Assembler::StoreStore)); | |
| 2617 __ bind(notVolatile); | |
| 2618 } | |
| 2619 | |
| 2620 | |
| 2621 void TemplateTable::fast_accessfield(TosState state) { | |
| 2622 transition(atos, state); | |
| 2623 | |
| 2624 // Do the JVMTI work here to avoid disturbing the register state below | |
| 2625 if (JvmtiExport::can_post_field_access()) { | |
| 2626 // Check to see if a field access watch has been set before we | |
| 2627 // take the time to call into the VM. | |
| 2628 Label L1; | |
| 2629 __ mov32(rcx, ExternalAddress((address) JvmtiExport::get_field_access_count_addr())); | |
| 2630 __ testl(rcx, rcx); | |
| 2631 __ jcc(Assembler::zero, L1); | |
| 2632 // access constant pool cache entry | |
| 2633 __ get_cache_entry_pointer_at_bcp(c_rarg2, rcx, 1); | |
|
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2634 __ verify_oop(rax); |
| 0 | 2635 __ movq(r12, rax); // save object pointer before call_VM() clobbers it |
| 2636 __ movq(c_rarg1, rax); | |
| 2637 // c_rarg1: object pointer copied above | |
| 2638 // c_rarg2: cache entry pointer | |
| 2639 __ call_VM(noreg, | |
| 2640 CAST_FROM_FN_PTR(address, | |
| 2641 InterpreterRuntime::post_field_access), | |
| 2642 c_rarg1, c_rarg2); | |
| 2643 __ movq(rax, r12); // restore object pointer | |
|
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2644 __ reinit_heapbase(); |
| 0 | 2645 __ bind(L1); |
| 2646 } | |
| 2647 | |
| 2648 // access constant pool cache | |
| 2649 __ get_cache_and_index_at_bcp(rcx, rbx, 1); | |
| 2650 // replace index with field offset from cache entry | |
| 2651 // [jk] not needed currently | |
| 2652 // if (os::is_MP()) { | |
| 2653 // __ movl(rdx, Address(rcx, rbx, Address::times_8, | |
| 2654 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2655 // ConstantPoolCacheEntry::flags_offset()))); | |
| 2656 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
| 2657 // __ andl(rdx, 0x1); | |
| 2658 // } | |
| 2659 __ movq(rbx, Address(rcx, rbx, Address::times_8, | |
| 2660 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2661 ConstantPoolCacheEntry::f2_offset()))); | |
| 2662 | |
| 2663 // rax: object | |
| 2664 __ verify_oop(rax); | |
| 2665 __ null_check(rax); | |
| 2666 Address field(rax, rbx, Address::times_1); | |
| 2667 | |
| 2668 // access field | |
| 2669 switch (bytecode()) { | |
| 2670 case Bytecodes::_fast_agetfield: | |
|
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2671 __ load_heap_oop(rax, field); |
| 0 | 2672 __ verify_oop(rax); |
| 2673 break; | |
| 2674 case Bytecodes::_fast_lgetfield: | |
| 2675 __ movq(rax, field); | |
| 2676 break; | |
| 2677 case Bytecodes::_fast_igetfield: | |
| 2678 __ movl(rax, field); | |
| 2679 break; | |
| 2680 case Bytecodes::_fast_bgetfield: | |
| 2681 __ movsbl(rax, field); | |
| 2682 break; | |
| 2683 case Bytecodes::_fast_sgetfield: | |
| 2684 __ load_signed_word(rax, field); | |
| 2685 break; | |
| 2686 case Bytecodes::_fast_cgetfield: | |
| 2687 __ load_unsigned_word(rax, field); | |
| 2688 break; | |
| 2689 case Bytecodes::_fast_fgetfield: | |
| 2690 __ movflt(xmm0, field); | |
| 2691 break; | |
| 2692 case Bytecodes::_fast_dgetfield: | |
| 2693 __ movdbl(xmm0, field); | |
| 2694 break; | |
| 2695 default: | |
| 2696 ShouldNotReachHere(); | |
| 2697 } | |
| 2698 // [jk] not needed currently | |
| 2699 // if (os::is_MP()) { | |
| 2700 // Label notVolatile; | |
| 2701 // __ testl(rdx, rdx); | |
| 2702 // __ jcc(Assembler::zero, notVolatile); | |
| 2703 // __ membar(Assembler::LoadLoad); | |
| 2704 // __ bind(notVolatile); | |
| 2705 //}; | |
| 2706 } | |
| 2707 | |
| 2708 void TemplateTable::fast_xaccess(TosState state) { | |
| 2709 transition(vtos, state); | |
| 2710 | |
| 2711 // get receiver | |
| 2712 __ movq(rax, aaddress(0)); | |
| 2713 debug_only(__ verify_local_tag(frame::TagReference, 0)); | |
| 2714 // access constant pool cache | |
| 2715 __ get_cache_and_index_at_bcp(rcx, rdx, 2); | |
| 2716 __ movq(rbx, | |
| 2717 Address(rcx, rdx, Address::times_8, | |
| 2718 in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2719 ConstantPoolCacheEntry::f2_offset()))); | |
| 2720 // make sure exception is reported in correct bcp range (getfield is | |
| 2721 // next instruction) | |
| 2722 __ incrementq(r13); | |
| 2723 __ null_check(rax); | |
| 2724 switch (state) { | |
| 2725 case itos: | |
| 2726 __ movl(rax, Address(rax, rbx, Address::times_1)); | |
| 2727 break; | |
| 2728 case atos: | |
|
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2729 __ load_heap_oop(rax, Address(rax, rbx, Address::times_1)); |
| 0 | 2730 __ verify_oop(rax); |
| 2731 break; | |
| 2732 case ftos: | |
| 2733 __ movflt(xmm0, Address(rax, rbx, Address::times_1)); | |
| 2734 break; | |
| 2735 default: | |
| 2736 ShouldNotReachHere(); | |
| 2737 } | |
| 2738 | |
| 2739 // [jk] not needed currently | |
| 2740 // if (os::is_MP()) { | |
| 2741 // Label notVolatile; | |
| 2742 // __ movl(rdx, Address(rcx, rdx, Address::times_8, | |
| 2743 // in_bytes(constantPoolCacheOopDesc::base_offset() + | |
| 2744 // ConstantPoolCacheEntry::flags_offset()))); | |
| 2745 // __ shrl(rdx, ConstantPoolCacheEntry::volatileField); | |
| 2746 // __ testl(rdx, 0x1); | |
| 2747 // __ jcc(Assembler::zero, notVolatile); | |
| 2748 // __ membar(Assembler::LoadLoad); | |
| 2749 // __ bind(notVolatile); | |
| 2750 // } | |
| 2751 | |
| 2752 __ decrementq(r13); | |
| 2753 } | |
| 2754 | |
| 2755 | |
| 2756 | |
| 2757 //----------------------------------------------------------------------------- | |
| 2758 // Calls | |
| 2759 | |
| 2760 void TemplateTable::count_calls(Register method, Register temp) { | |
| 2761 // implemented elsewhere | |
| 2762 ShouldNotReachHere(); | |
| 2763 } | |
| 2764 | |
| 2765 void TemplateTable::prepare_invoke(Register method, | |
| 2766 Register index, | |
| 2767 int byte_no, | |
| 2768 Bytecodes::Code code) { | |
| 2769 // determine flags | |
| 2770 const bool is_invokeinterface = code == Bytecodes::_invokeinterface; | |
| 2771 const bool is_invokevirtual = code == Bytecodes::_invokevirtual; | |
| 2772 const bool is_invokespecial = code == Bytecodes::_invokespecial; | |
| 2773 const bool load_receiver = code != Bytecodes::_invokestatic; | |
| 2774 const bool receiver_null_check = is_invokespecial; | |
| 2775 const bool save_flags = is_invokeinterface || is_invokevirtual; | |
| 2776 // setup registers & access constant pool cache | |
| 2777 const Register recv = rcx; | |
| 2778 const Register flags = rdx; | |
| 2779 assert_different_registers(method, index, recv, flags); | |
| 2780 | |
| 2781 // save 'interpreter return address' | |
| 2782 __ save_bcp(); | |
| 2783 | |
| 2784 load_invoke_cp_cache_entry(byte_no, method, index, flags, is_invokevirtual); | |
| 2785 | |
| 2786 // load receiver if needed (note: no return address pushed yet) | |
| 2787 if (load_receiver) { | |
| 2788 __ movl(recv, flags); | |
| 2789 __ andl(recv, 0xFF); | |
| 2790 if (TaggedStackInterpreter) __ shll(recv, 1); // index*2 | |
|
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2791 __ movq(recv, Address(rsp, recv, Address::times_8, |
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2792 -Interpreter::expr_offset_in_bytes(1))); |
| 0 | 2793 __ verify_oop(recv); |
| 2794 } | |
| 2795 | |
| 2796 // do null check if needed | |
| 2797 if (receiver_null_check) { | |
| 2798 __ null_check(recv); | |
| 2799 } | |
| 2800 | |
| 2801 if (save_flags) { | |
| 2802 __ movl(r13, flags); | |
| 2803 } | |
| 2804 | |
| 2805 // compute return type | |
| 2806 __ shrl(flags, ConstantPoolCacheEntry::tosBits); | |
| 2807 // Make sure we don't need to mask flags for tosBits after the above shift | |
| 2808 ConstantPoolCacheEntry::verify_tosBits(); | |
| 2809 // load return address | |
| 2810 { | |
| 2811 ExternalAddress return_5((address)Interpreter::return_5_addrs_by_index_table()); | |
| 2812 ExternalAddress return_3((address)Interpreter::return_3_addrs_by_index_table()); | |
| 2813 __ lea(rscratch1, (is_invokeinterface ? return_5 : return_3)); | |
| 2814 __ movq(flags, Address(rscratch1, flags, Address::times_8)); | |
| 2815 } | |
| 2816 | |
| 2817 // push return address | |
| 2818 __ pushq(flags); | |
| 2819 | |
| 2820 // Restore flag field from the constant pool cache, and restore esi | |
| 2821 // for later null checks. r13 is the bytecode pointer | |
| 2822 if (save_flags) { | |
| 2823 __ movl(flags, r13); | |
| 2824 __ restore_bcp(); | |
| 2825 } | |
| 2826 } | |
| 2827 | |
| 2828 | |
| 2829 void TemplateTable::invokevirtual_helper(Register index, | |
| 2830 Register recv, | |
| 2831 Register flags) { | |
| 2832 // Uses temporary registers rax, rdx assert_different_registers(index, recv, rax, rdx); | |
| 2833 | |
| 2834 // Test for an invoke of a final method | |
| 2835 Label notFinal; | |
| 2836 __ movl(rax, flags); | |
| 2837 __ andl(rax, (1 << ConstantPoolCacheEntry::vfinalMethod)); | |
| 2838 __ jcc(Assembler::zero, notFinal); | |
| 2839 | |
| 2840 const Register method = index; // method must be rbx | |
| 2841 assert(method == rbx, | |
| 2842 "methodOop must be rbx for interpreter calling convention"); | |
| 2843 | |
| 2844 // do the call - the index is actually the method to call | |
| 2845 __ verify_oop(method); | |
| 2846 | |
| 2847 // It's final, need a null check here! | |
| 2848 __ null_check(recv); | |
| 2849 | |
| 2850 // profile this call | |
| 2851 __ profile_final_call(rax); | |
| 2852 | |
| 2853 __ jump_from_interpreted(method, rax); | |
| 2854 | |
| 2855 __ bind(notFinal); | |
| 2856 | |
| 2857 // get receiver klass | |
| 2858 __ null_check(recv, oopDesc::klass_offset_in_bytes()); | |
|
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2859 __ load_klass(rax, recv); |
| 0 | 2860 |
| 2861 __ verify_oop(rax); | |
| 2862 | |
| 2863 // profile this call | |
| 2864 __ profile_virtual_call(rax, r14, rdx); | |
| 2865 | |
| 2866 // get target methodOop & entry point | |
| 2867 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 2868 assert(vtableEntry::size() * wordSize == 8, | |
| 2869 "adjust the scaling in the code below"); | |
| 2870 __ movq(method, Address(rax, index, | |
|
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2871 Address::times_8, |
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2872 base + vtableEntry::method_offset_in_bytes())); |
| 0 | 2873 __ movq(rdx, Address(method, methodOopDesc::interpreter_entry_offset())); |
| 2874 __ jump_from_interpreted(method, rdx); | |
| 2875 } | |
| 2876 | |
| 2877 | |
| 2878 void TemplateTable::invokevirtual(int byte_no) { | |
| 2879 transition(vtos, vtos); | |
| 2880 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
| 2881 | |
| 2882 // rbx: index | |
| 2883 // rcx: receiver | |
| 2884 // rdx: flags | |
| 2885 | |
| 2886 invokevirtual_helper(rbx, rcx, rdx); | |
| 2887 } | |
| 2888 | |
| 2889 | |
| 2890 void TemplateTable::invokespecial(int byte_no) { | |
| 2891 transition(vtos, vtos); | |
| 2892 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
| 2893 // do the call | |
| 2894 __ verify_oop(rbx); | |
| 2895 __ profile_call(rax); | |
| 2896 __ jump_from_interpreted(rbx, rax); | |
| 2897 } | |
| 2898 | |
| 2899 | |
| 2900 void TemplateTable::invokestatic(int byte_no) { | |
| 2901 transition(vtos, vtos); | |
| 2902 prepare_invoke(rbx, noreg, byte_no, bytecode()); | |
| 2903 // do the call | |
| 2904 __ verify_oop(rbx); | |
| 2905 __ profile_call(rax); | |
| 2906 __ jump_from_interpreted(rbx, rax); | |
| 2907 } | |
| 2908 | |
| 2909 void TemplateTable::fast_invokevfinal(int byte_no) { | |
| 2910 transition(vtos, vtos); | |
| 2911 __ stop("fast_invokevfinal not used on amd64"); | |
| 2912 } | |
| 2913 | |
| 2914 void TemplateTable::invokeinterface(int byte_no) { | |
| 2915 transition(vtos, vtos); | |
| 2916 prepare_invoke(rax, rbx, byte_no, bytecode()); | |
| 2917 | |
| 2918 // rax: Interface | |
| 2919 // rbx: index | |
| 2920 // rcx: receiver | |
| 2921 // rdx: flags | |
| 2922 | |
| 2923 // Special case of invokeinterface called for virtual method of | |
| 2924 // java.lang.Object. See cpCacheOop.cpp for details. | |
| 2925 // This code isn't produced by javac, but could be produced by | |
| 2926 // another compliant java compiler. | |
| 2927 Label notMethod; | |
| 2928 __ movl(r14, rdx); | |
| 2929 __ andl(r14, (1 << ConstantPoolCacheEntry::methodInterface)); | |
| 2930 __ jcc(Assembler::zero, notMethod); | |
| 2931 | |
| 2932 invokevirtual_helper(rbx, rcx, rdx); | |
| 2933 __ bind(notMethod); | |
| 2934 | |
| 2935 // Get receiver klass into rdx - also a null check | |
| 2936 __ restore_locals(); // restore r14 | |
|
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2937 __ load_klass(rdx, rcx); |
| 0 | 2938 __ verify_oop(rdx); |
| 2939 | |
| 2940 // profile this call | |
| 2941 __ profile_virtual_call(rdx, r13, r14); | |
| 2942 | |
| 2943 __ movq(r14, rdx); // Save klassOop in r14 | |
| 2944 | |
| 2945 // Compute start of first itableOffsetEntry (which is at the end of | |
| 2946 // the vtable) | |
| 2947 const int base = instanceKlass::vtable_start_offset() * wordSize; | |
| 2948 // Get length of vtable | |
| 2949 assert(vtableEntry::size() * wordSize == 8, | |
| 2950 "adjust the scaling in the code below"); | |
| 2951 __ movl(r13, Address(rdx, | |
| 2952 instanceKlass::vtable_length_offset() * wordSize)); | |
| 2953 __ leaq(rdx, Address(rdx, r13, Address::times_8, base)); | |
| 2954 | |
| 2955 if (HeapWordsPerLong > 1) { | |
| 2956 // Round up to align_object_offset boundary | |
| 2957 __ round_to_q(rdx, BytesPerLong); | |
| 2958 } | |
| 2959 | |
| 2960 Label entry, search, interface_ok; | |
| 2961 | |
| 2962 __ jmpb(entry); | |
| 2963 __ bind(search); | |
| 2964 __ addq(rdx, itableOffsetEntry::size() * wordSize); | |
| 2965 | |
| 2966 __ bind(entry); | |
| 2967 | |
| 2968 // Check that the entry is non-null. A null entry means that the | |
| 2969 // receiver class doesn't implement the interface, and wasn't the | |
| 2970 // same as the receiver class checked when the interface was | |
| 2971 // resolved. | |
| 2972 __ pushq(rdx); | |
| 2973 __ movq(rdx, Address(rdx, itableOffsetEntry::interface_offset_in_bytes())); | |
| 2974 __ testq(rdx, rdx); | |
| 2975 __ jcc(Assembler::notZero, interface_ok); | |
| 2976 // throw exception | |
| 2977 __ popq(rdx); // pop saved register first. | |
| 2978 __ popq(rbx); // pop return address (pushed by prepare_invoke) | |
| 2979 __ restore_bcp(); // r13 must be correct for exception handler (was | |
| 2980 // destroyed) | |
| 2981 __ restore_locals(); // make sure locals pointer is correct as well | |
| 2982 // (was destroyed) | |
| 2983 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 2984 InterpreterRuntime::throw_IncompatibleClassChangeError)); | |
| 2985 // the call_VM checks for exception, so we should never return here. | |
| 2986 __ should_not_reach_here(); | |
| 2987 __ bind(interface_ok); | |
| 2988 | |
| 2989 __ popq(rdx); | |
| 2990 | |
| 2991 __ cmpq(rax, Address(rdx, itableOffsetEntry::interface_offset_in_bytes())); | |
| 2992 __ jcc(Assembler::notEqual, search); | |
| 2993 | |
| 2994 __ movl(rdx, Address(rdx, itableOffsetEntry::offset_offset_in_bytes())); | |
| 2995 | |
| 2996 __ addq(rdx, r14); // Add offset to klassOop | |
| 2997 assert(itableMethodEntry::size() * wordSize == 8, | |
| 2998 "adjust the scaling in the code below"); | |
| 2999 __ movq(rbx, Address(rdx, rbx, Address::times_8)); | |
| 3000 // rbx: methodOop to call | |
| 3001 // rcx: receiver | |
| 3002 // Check for abstract method error | |
| 3003 // Note: This should be done more efficiently via a | |
| 3004 // throw_abstract_method_error interpreter entry point and a | |
| 3005 // conditional jump to it in case of a null method. | |
| 3006 { | |
| 3007 Label L; | |
| 3008 __ testq(rbx, rbx); | |
| 3009 __ jcc(Assembler::notZero, L); | |
| 3010 // throw exception | |
| 3011 // note: must restore interpreter registers to canonical | |
| 3012 // state for exception handling to work correctly! | |
| 3013 __ popq(rbx); // pop return address (pushed by prepare_invoke) | |
| 3014 __ restore_bcp(); // r13 must be correct for exception handler | |
| 3015 // (was destroyed) | |
| 3016 __ restore_locals(); // make sure locals pointer is correct as | |
| 3017 // well (was destroyed) | |
| 3018 __ call_VM(noreg, | |
| 3019 CAST_FROM_FN_PTR(address, | |
| 3020 InterpreterRuntime::throw_AbstractMethodError)); | |
| 3021 // the call_VM checks for exception, so we should never return here. | |
| 3022 __ should_not_reach_here(); | |
| 3023 __ bind(L); | |
| 3024 } | |
| 3025 | |
| 3026 __ movq(rcx, Address(rbx, methodOopDesc::interpreter_entry_offset())); | |
| 3027 | |
| 3028 // do the call | |
| 3029 // rcx: receiver | |
| 3030 // rbx: methodOop | |
| 3031 __ jump_from_interpreted(rbx, rdx); | |
| 3032 } | |
| 3033 | |
| 3034 //----------------------------------------------------------------------------- | |
| 3035 // Allocation | |
| 3036 | |
| 3037 void TemplateTable::_new() { | |
| 3038 transition(vtos, atos); | |
| 3039 __ get_unsigned_2_byte_index_at_bcp(rdx, 1); | |
| 3040 Label slow_case; | |
| 3041 Label done; | |
| 3042 Label initialize_header; | |
| 3043 Label initialize_object; // including clearing the fields | |
| 3044 Label allocate_shared; | |
| 3045 ExternalAddress top((address)Universe::heap()->top_addr()); | |
| 3046 ExternalAddress end((address)Universe::heap()->end_addr()); | |
| 3047 | |
| 3048 __ get_cpool_and_tags(rsi, rax); | |
| 3049 // get instanceKlass | |
| 3050 __ movq(rsi, Address(rsi, rdx, | |
| 3051 Address::times_8, sizeof(constantPoolOopDesc))); | |
| 3052 | |
| 3053 // make sure the class we're about to instantiate has been | |
| 3054 // resolved. Note: slow_case does a pop of stack, which is why we | |
| 3055 // loaded class/pushed above | |
| 3056 const int tags_offset = typeArrayOopDesc::header_size(T_BYTE) * wordSize; | |
| 3057 __ cmpb(Address(rax, rdx, Address::times_1, tags_offset), | |
| 3058 JVM_CONSTANT_Class); | |
| 3059 __ jcc(Assembler::notEqual, slow_case); | |
| 3060 | |
| 3061 // make sure klass is initialized & doesn't have finalizer | |
| 3062 // make sure klass is fully initialized | |
| 3063 __ cmpl(Address(rsi, | |
| 3064 instanceKlass::init_state_offset_in_bytes() + | |
| 3065 sizeof(oopDesc)), | |
| 3066 instanceKlass::fully_initialized); | |
| 3067 __ jcc(Assembler::notEqual, slow_case); | |
| 3068 | |
| 3069 // get instance_size in instanceKlass (scaled to a count of bytes) | |
| 3070 __ movl(rdx, | |
| 3071 Address(rsi, | |
| 3072 Klass::layout_helper_offset_in_bytes() + sizeof(oopDesc))); | |
| 3073 // test to see if it has a finalizer or is malformed in some way | |
| 3074 __ testl(rdx, Klass::_lh_instance_slow_path_bit); | |
| 3075 __ jcc(Assembler::notZero, slow_case); | |
| 3076 | |
| 3077 // Allocate the instance | |
| 3078 // 1) Try to allocate in the TLAB | |
| 3079 // 2) if fail and the object is large allocate in the shared Eden | |
| 3080 // 3) if the above fails (or is not applicable), go to a slow case | |
| 3081 // (creates a new TLAB, etc.) | |
| 3082 | |
| 3083 const bool allow_shared_alloc = | |
| 3084 Universe::heap()->supports_inline_contig_alloc() && !CMSIncrementalMode; | |
| 3085 | |
| 3086 if (UseTLAB) { | |
| 3087 __ movq(rax, Address(r15_thread, in_bytes(JavaThread::tlab_top_offset()))); | |
| 3088 __ leaq(rbx, Address(rax, rdx, Address::times_1)); | |
| 3089 __ cmpq(rbx, Address(r15_thread, in_bytes(JavaThread::tlab_end_offset()))); | |
| 3090 __ jcc(Assembler::above, allow_shared_alloc ? allocate_shared : slow_case); | |
| 3091 __ movq(Address(r15_thread, in_bytes(JavaThread::tlab_top_offset())), rbx); | |
| 3092 if (ZeroTLAB) { | |
| 3093 // the fields have been already cleared | |
| 3094 __ jmp(initialize_header); | |
| 3095 } else { | |
| 3096 // initialize both the header and fields | |
| 3097 __ jmp(initialize_object); | |
| 3098 } | |
| 3099 } | |
| 3100 | |
| 3101 // Allocation in the shared Eden, if allowed. | |
| 3102 // | |
| 3103 // rdx: instance size in bytes | |
| 3104 if (allow_shared_alloc) { | |
| 3105 __ bind(allocate_shared); | |
| 3106 | |
| 3107 const Register RtopAddr = rscratch1; | |
| 3108 const Register RendAddr = rscratch2; | |
| 3109 | |
| 3110 __ lea(RtopAddr, top); | |
| 3111 __ lea(RendAddr, end); | |
| 3112 __ movq(rax, Address(RtopAddr, 0)); | |
| 3113 | |
| 3114 // For retries rax gets set by cmpxchgq | |
| 3115 Label retry; | |
| 3116 __ bind(retry); | |
| 3117 __ leaq(rbx, Address(rax, rdx, Address::times_1)); | |
| 3118 __ cmpq(rbx, Address(RendAddr, 0)); | |
| 3119 __ jcc(Assembler::above, slow_case); | |
| 3120 | |
| 3121 // Compare rax with the top addr, and if still equal, store the new | |
| 3122 // top addr in rbx at the address of the top addr pointer. Sets ZF if was | |
| 3123 // equal, and clears it otherwise. Use lock prefix for atomicity on MPs. | |
| 3124 // | |
| 3125 // rax: object begin | |
| 3126 // rbx: object end | |
| 3127 // rdx: instance size in bytes | |
| 3128 if (os::is_MP()) { | |
| 3129 __ lock(); | |
| 3130 } | |
| 3131 __ cmpxchgq(rbx, Address(RtopAddr, 0)); | |
| 3132 | |
| 3133 // if someone beat us on the allocation, try again, otherwise continue | |
| 3134 __ jcc(Assembler::notEqual, retry); | |
| 3135 } | |
| 3136 | |
| 3137 if (UseTLAB || Universe::heap()->supports_inline_contig_alloc()) { | |
| 3138 // The object is initialized before the header. If the object size is | |
| 3139 // zero, go directly to the header initialization. | |
| 3140 __ bind(initialize_object); | |
| 3141 __ decrementl(rdx, sizeof(oopDesc)); | |
| 3142 __ jcc(Assembler::zero, initialize_header); | |
| 3143 | |
| 3144 // Initialize object fields | |
| 3145 __ xorl(rcx, rcx); // use zero reg to clear memory (shorter code) | |
| 3146 __ shrl(rdx, LogBytesPerLong); // divide by oopSize to simplify the loop | |
| 3147 { | |
| 3148 Label loop; | |
| 3149 __ bind(loop); | |
| 3150 __ movq(Address(rax, rdx, Address::times_8, | |
| 3151 sizeof(oopDesc) - oopSize), | |
| 3152 rcx); | |
| 3153 __ decrementl(rdx); | |
| 3154 __ jcc(Assembler::notZero, loop); | |
| 3155 } | |
| 3156 | |
| 3157 // initialize object header only. | |
| 3158 __ bind(initialize_header); | |
| 3159 if (UseBiasedLocking) { | |
| 3160 __ movq(rscratch1, Address(rsi, Klass::prototype_header_offset_in_bytes() + klassOopDesc::klass_part_offset_in_bytes())); | |
| 3161 __ movq(Address(rax, oopDesc::mark_offset_in_bytes()), rscratch1); | |
| 3162 } else { | |
| 3163 __ movptr(Address(rax, oopDesc::mark_offset_in_bytes()), | |
| 3164 (intptr_t) markOopDesc::prototype()); // header (address 0x1) | |
| 3165 } | |
|
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3166 __ store_klass(rax, rsi); // klass |
| 0 | 3167 __ jmp(done); |
| 3168 } | |
| 3169 | |
| 3170 { | |
| 3171 SkipIfEqual skip(_masm, &DTraceAllocProbes, false); | |
| 3172 // Trigger dtrace event for fastpath | |
| 3173 __ push(atos); // save the return value | |
| 3174 __ call_VM_leaf( | |
| 3175 CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), rax); | |
| 3176 __ pop(atos); // restore the return value | |
| 3177 } | |
| 3178 | |
| 3179 // slow case | |
| 3180 __ bind(slow_case); | |
| 3181 __ get_constant_pool(c_rarg1); | |
| 3182 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
| 3183 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::_new), c_rarg1, c_rarg2); | |
| 3184 __ verify_oop(rax); | |
| 3185 | |
| 3186 // continue | |
| 3187 __ bind(done); | |
| 3188 } | |
| 3189 | |
| 3190 void TemplateTable::newarray() { | |
| 3191 transition(itos, atos); | |
| 3192 __ load_unsigned_byte(c_rarg1, at_bcp(1)); | |
| 3193 __ movl(c_rarg2, rax); | |
| 3194 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::newarray), | |
| 3195 c_rarg1, c_rarg2); | |
| 3196 } | |
| 3197 | |
| 3198 void TemplateTable::anewarray() { | |
| 3199 transition(itos, atos); | |
| 3200 __ get_unsigned_2_byte_index_at_bcp(c_rarg2, 1); | |
| 3201 __ get_constant_pool(c_rarg1); | |
| 3202 __ movl(c_rarg3, rax); | |
| 3203 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::anewarray), | |
| 3204 c_rarg1, c_rarg2, c_rarg3); | |
| 3205 } | |
| 3206 | |
| 3207 void TemplateTable::arraylength() { | |
| 3208 transition(atos, itos); | |
| 3209 __ null_check(rax, arrayOopDesc::length_offset_in_bytes()); | |
| 3210 __ movl(rax, Address(rax, arrayOopDesc::length_offset_in_bytes())); | |
| 3211 } | |
| 3212 | |
| 3213 void TemplateTable::checkcast() { | |
| 3214 transition(atos, atos); | |
| 3215 Label done, is_null, ok_is_subtype, quicked, resolved; | |
| 3216 __ testq(rax, rax); // object is in rax | |
| 3217 __ jcc(Assembler::zero, is_null); | |
| 3218 | |
| 3219 // Get cpool & tags index | |
| 3220 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
| 3221 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
| 3222 // See if bytecode has already been quicked | |
| 3223 __ cmpb(Address(rdx, rbx, | |
| 3224 Address::times_1, | |
| 3225 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
| 3226 JVM_CONSTANT_Class); | |
| 3227 __ jcc(Assembler::equal, quicked); | |
|
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3228 __ push(atos); // save receiver for result, and for GC |
| 0 | 3229 __ movq(r12, rcx); // save rcx XXX |
| 3230 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); | |
|
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3231 __ movq(rcx, r12); // restore rcx XXX |
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3232 __ reinit_heapbase(); |
| 0 | 3233 __ pop_ptr(rdx); // restore receiver |
| 3234 __ jmpb(resolved); | |
| 3235 | |
| 3236 // Get superklass in rax and subklass in rbx | |
| 3237 __ bind(quicked); | |
| 3238 __ movq(rdx, rax); // Save object in rdx; rax needed for subtype check | |
| 3239 __ movq(rax, Address(rcx, rbx, | |
| 3240 Address::times_8, sizeof(constantPoolOopDesc))); | |
| 3241 | |
| 3242 __ bind(resolved); | |
|
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3243 __ load_klass(rbx, rdx); |
| 0 | 3244 |
| 3245 // Generate subtype check. Blows rcx, rdi. Object in rdx. | |
| 3246 // Superklass in rax. Subklass in rbx. | |
| 3247 __ gen_subtype_check(rbx, ok_is_subtype); | |
| 3248 | |
| 3249 // Come here on failure | |
| 3250 __ push_ptr(rdx); | |
| 3251 // object is at TOS | |
| 3252 __ jump(ExternalAddress(Interpreter::_throw_ClassCastException_entry)); | |
| 3253 | |
| 3254 // Come here on success | |
| 3255 __ bind(ok_is_subtype); | |
| 3256 __ movq(rax, rdx); // Restore object in rdx | |
| 3257 | |
| 3258 // Collect counts on whether this check-cast sees NULLs a lot or not. | |
| 3259 if (ProfileInterpreter) { | |
| 3260 __ jmp(done); | |
| 3261 __ bind(is_null); | |
| 3262 __ profile_null_seen(rcx); | |
| 3263 } else { | |
| 3264 __ bind(is_null); // same as 'done' | |
| 3265 } | |
| 3266 __ bind(done); | |
| 3267 } | |
| 3268 | |
| 3269 void TemplateTable::instanceof() { | |
| 3270 transition(atos, itos); | |
| 3271 Label done, is_null, ok_is_subtype, quicked, resolved; | |
| 3272 __ testq(rax, rax); | |
| 3273 __ jcc(Assembler::zero, is_null); | |
| 3274 | |
| 3275 // Get cpool & tags index | |
| 3276 __ get_cpool_and_tags(rcx, rdx); // rcx=cpool, rdx=tags array | |
| 3277 __ get_unsigned_2_byte_index_at_bcp(rbx, 1); // rbx=index | |
| 3278 // See if bytecode has already been quicked | |
| 3279 __ cmpb(Address(rdx, rbx, | |
| 3280 Address::times_1, | |
| 3281 typeArrayOopDesc::header_size(T_BYTE) * wordSize), | |
| 3282 JVM_CONSTANT_Class); | |
| 3283 __ jcc(Assembler::equal, quicked); | |
| 3284 | |
|
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3285 __ push(atos); // save receiver for result, and for GC |
| 0 | 3286 __ movq(r12, rcx); // save rcx |
| 3287 call_VM(rax, CAST_FROM_FN_PTR(address, InterpreterRuntime::quicken_io_cc)); | |
|
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3288 __ movq(rcx, r12); // restore rcx |
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3289 __ reinit_heapbase(); |
| 0 | 3290 __ pop_ptr(rdx); // restore receiver |
|
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3291 __ load_klass(rdx, rdx); |
| 0 | 3292 __ jmpb(resolved); |
| 3293 | |
| 3294 // Get superklass in rax and subklass in rdx | |
| 3295 __ bind(quicked); | |
|
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3296 __ load_klass(rdx, rax); |
| 0 | 3297 __ movq(rax, Address(rcx, rbx, |
|
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3298 Address::times_8, sizeof(constantPoolOopDesc))); |
| 0 | 3299 |
| 3300 __ bind(resolved); | |
| 3301 | |
| 3302 // Generate subtype check. Blows rcx, rdi | |
| 3303 // Superklass in rax. Subklass in rdx. | |
| 3304 __ gen_subtype_check(rdx, ok_is_subtype); | |
| 3305 | |
| 3306 // Come here on failure | |
| 3307 __ xorl(rax, rax); | |
| 3308 __ jmpb(done); | |
| 3309 // Come here on success | |
| 3310 __ bind(ok_is_subtype); | |
| 3311 __ movl(rax, 1); | |
| 3312 | |
| 3313 // Collect counts on whether this test sees NULLs a lot or not. | |
| 3314 if (ProfileInterpreter) { | |
| 3315 __ jmp(done); | |
| 3316 __ bind(is_null); | |
| 3317 __ profile_null_seen(rcx); | |
| 3318 } else { | |
| 3319 __ bind(is_null); // same as 'done' | |
| 3320 } | |
| 3321 __ bind(done); | |
| 3322 // rax = 0: obj == NULL or obj is not an instanceof the specified klass | |
| 3323 // rax = 1: obj != NULL and obj is an instanceof the specified klass | |
| 3324 } | |
| 3325 | |
| 3326 //----------------------------------------------------------------------------- | |
| 3327 // Breakpoints | |
| 3328 void TemplateTable::_breakpoint() { | |
| 3329 // Note: We get here even if we are single stepping.. | |
| 3330 // jbug inists on setting breakpoints at every bytecode | |
| 3331 // even if we are in single step mode. | |
| 3332 | |
| 3333 transition(vtos, vtos); | |
| 3334 | |
| 3335 // get the unpatched byte code | |
| 3336 __ get_method(c_rarg1); | |
| 3337 __ call_VM(noreg, | |
| 3338 CAST_FROM_FN_PTR(address, | |
| 3339 InterpreterRuntime::get_original_bytecode_at), | |
| 3340 c_rarg1, r13); | |
| 3341 __ movq(rbx, rax); | |
| 3342 | |
| 3343 // post the breakpoint event | |
| 3344 __ get_method(c_rarg1); | |
| 3345 __ call_VM(noreg, | |
| 3346 CAST_FROM_FN_PTR(address, InterpreterRuntime::_breakpoint), | |
| 3347 c_rarg1, r13); | |
| 3348 | |
| 3349 // complete the execution of original bytecode | |
| 3350 __ dispatch_only_normal(vtos); | |
| 3351 } | |
| 3352 | |
| 3353 //----------------------------------------------------------------------------- | |
| 3354 // Exceptions | |
| 3355 | |
| 3356 void TemplateTable::athrow() { | |
| 3357 transition(atos, vtos); | |
| 3358 __ null_check(rax); | |
| 3359 __ jump(ExternalAddress(Interpreter::throw_exception_entry())); | |
| 3360 } | |
| 3361 | |
| 3362 //----------------------------------------------------------------------------- | |
| 3363 // Synchronization | |
| 3364 // | |
| 3365 // Note: monitorenter & exit are symmetric routines; which is reflected | |
| 3366 // in the assembly code structure as well | |
| 3367 // | |
| 3368 // Stack layout: | |
| 3369 // | |
| 3370 // [expressions ] <--- rsp = expression stack top | |
| 3371 // .. | |
| 3372 // [expressions ] | |
| 3373 // [monitor entry] <--- monitor block top = expression stack bot | |
| 3374 // .. | |
| 3375 // [monitor entry] | |
| 3376 // [frame data ] <--- monitor block bot | |
| 3377 // ... | |
| 3378 // [saved rbp ] <--- rbp | |
| 3379 void TemplateTable::monitorenter() { | |
| 3380 transition(atos, vtos); | |
| 3381 | |
| 3382 // check for NULL object | |
| 3383 __ null_check(rax); | |
| 3384 | |
| 3385 const Address monitor_block_top( | |
| 3386 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 3387 const Address monitor_block_bot( | |
| 3388 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 3389 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 3390 | |
| 3391 Label allocated; | |
| 3392 | |
| 3393 // initialize entry pointer | |
| 3394 __ xorl(c_rarg1, c_rarg1); // points to free slot or NULL | |
| 3395 | |
| 3396 // find a free slot in the monitor block (result in c_rarg1) | |
| 3397 { | |
| 3398 Label entry, loop, exit; | |
| 3399 __ movq(c_rarg3, monitor_block_top); // points to current entry, | |
| 3400 // starting with top-most entry | |
| 3401 __ leaq(c_rarg2, monitor_block_bot); // points to word before bottom | |
| 3402 // of monitor block | |
| 3403 __ jmpb(entry); | |
| 3404 | |
| 3405 __ bind(loop); | |
| 3406 // check if current entry is used | |
| 3407 __ cmpq(Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes()), (int) NULL); | |
| 3408 // if not used then remember entry in c_rarg1 | |
| 3409 __ cmovq(Assembler::equal, c_rarg1, c_rarg3); | |
| 3410 // check if current entry is for same object | |
| 3411 __ cmpq(rax, Address(c_rarg3, BasicObjectLock::obj_offset_in_bytes())); | |
| 3412 // if same object then stop searching | |
| 3413 __ jccb(Assembler::equal, exit); | |
| 3414 // otherwise advance to next entry | |
| 3415 __ addq(c_rarg3, entry_size); | |
| 3416 __ bind(entry); | |
| 3417 // check if bottom reached | |
| 3418 __ cmpq(c_rarg3, c_rarg2); | |
| 3419 // if not at bottom then check this entry | |
| 3420 __ jcc(Assembler::notEqual, loop); | |
| 3421 __ bind(exit); | |
| 3422 } | |
| 3423 | |
| 3424 __ testq(c_rarg1, c_rarg1); // check if a slot has been found | |
| 3425 __ jcc(Assembler::notZero, allocated); // if found, continue with that one | |
| 3426 | |
| 3427 // allocate one if there's no free slot | |
| 3428 { | |
| 3429 Label entry, loop; | |
| 3430 // 1. compute new pointers // rsp: old expression stack top | |
| 3431 __ movq(c_rarg1, monitor_block_bot); // c_rarg1: old expression stack bottom | |
| 3432 __ subq(rsp, entry_size); // move expression stack top | |
| 3433 __ subq(c_rarg1, entry_size); // move expression stack bottom | |
| 3434 __ movq(c_rarg3, rsp); // set start value for copy loop | |
| 3435 __ movq(monitor_block_bot, c_rarg1); // set new monitor block bottom | |
| 3436 __ jmp(entry); | |
| 3437 // 2. move expression stack contents | |
| 3438 __ bind(loop); | |
| 3439 __ movq(c_rarg2, Address(c_rarg3, entry_size)); // load expression stack | |
| 3440 // word from old location | |
| 3441 __ movq(Address(c_rarg3, 0), c_rarg2); // and store it at new location | |
| 3442 __ addq(c_rarg3, wordSize); // advance to next word | |
| 3443 __ bind(entry); | |
| 3444 __ cmpq(c_rarg3, c_rarg1); // check if bottom reached | |
| 3445 __ jcc(Assembler::notEqual, loop); // if not at bottom then | |
| 3446 // copy next word | |
| 3447 } | |
| 3448 | |
| 3449 // call run-time routine | |
| 3450 // c_rarg1: points to monitor entry | |
| 3451 __ bind(allocated); | |
| 3452 | |
| 3453 // Increment bcp to point to the next bytecode, so exception | |
| 3454 // handling for async. exceptions work correctly. | |
| 3455 // The object has already been poped from the stack, so the | |
| 3456 // expression stack looks correct. | |
| 3457 __ incrementq(r13); | |
| 3458 | |
| 3459 // store object | |
| 3460 __ movq(Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes()), rax); | |
| 3461 __ lock_object(c_rarg1); | |
| 3462 | |
| 3463 // check to make sure this monitor doesn't cause stack overflow after locking | |
| 3464 __ save_bcp(); // in case of exception | |
| 3465 __ generate_stack_overflow_check(0); | |
| 3466 | |
| 3467 // The bcp has already been incremented. Just need to dispatch to | |
| 3468 // next instruction. | |
| 3469 __ dispatch_next(vtos); | |
| 3470 } | |
| 3471 | |
| 3472 | |
| 3473 void TemplateTable::monitorexit() { | |
| 3474 transition(atos, vtos); | |
| 3475 | |
| 3476 // check for NULL object | |
| 3477 __ null_check(rax); | |
| 3478 | |
| 3479 const Address monitor_block_top( | |
| 3480 rbp, frame::interpreter_frame_monitor_block_top_offset * wordSize); | |
| 3481 const Address monitor_block_bot( | |
| 3482 rbp, frame::interpreter_frame_initial_sp_offset * wordSize); | |
| 3483 const int entry_size = frame::interpreter_frame_monitor_size() * wordSize; | |
| 3484 | |
| 3485 Label found; | |
| 3486 | |
| 3487 // find matching slot | |
| 3488 { | |
| 3489 Label entry, loop; | |
| 3490 __ movq(c_rarg1, monitor_block_top); // points to current entry, | |
| 3491 // starting with top-most entry | |
| 3492 __ leaq(c_rarg2, monitor_block_bot); // points to word before bottom | |
| 3493 // of monitor block | |
| 3494 __ jmpb(entry); | |
| 3495 | |
| 3496 __ bind(loop); | |
| 3497 // check if current entry is for same object | |
| 3498 __ cmpq(rax, Address(c_rarg1, BasicObjectLock::obj_offset_in_bytes())); | |
| 3499 // if same object then stop searching | |
| 3500 __ jcc(Assembler::equal, found); | |
| 3501 // otherwise advance to next entry | |
| 3502 __ addq(c_rarg1, entry_size); | |
| 3503 __ bind(entry); | |
| 3504 // check if bottom reached | |
| 3505 __ cmpq(c_rarg1, c_rarg2); | |
| 3506 // if not at bottom then check this entry | |
| 3507 __ jcc(Assembler::notEqual, loop); | |
| 3508 } | |
| 3509 | |
| 3510 // error handling. Unlocking was not block-structured | |
| 3511 __ call_VM(noreg, CAST_FROM_FN_PTR(address, | |
| 3512 InterpreterRuntime::throw_illegal_monitor_state_exception)); | |
| 3513 __ should_not_reach_here(); | |
| 3514 | |
| 3515 // call run-time routine | |
| 3516 // rsi: points to monitor entry | |
| 3517 __ bind(found); | |
| 3518 __ push_ptr(rax); // make sure object is on stack (contract with oopMaps) | |
| 3519 __ unlock_object(c_rarg1); | |
| 3520 __ pop_ptr(rax); // discard object | |
| 3521 } | |
| 3522 | |
| 3523 | |
| 3524 // Wide instructions | |
| 3525 void TemplateTable::wide() { | |
| 3526 transition(vtos, vtos); | |
| 3527 __ load_unsigned_byte(rbx, at_bcp(1)); | |
| 3528 __ lea(rscratch1, ExternalAddress((address)Interpreter::_wentry_point)); | |
| 3529 __ jmp(Address(rscratch1, rbx, Address::times_8)); | |
| 3530 // Note: the r13 increment step is part of the individual wide | |
| 3531 // bytecode implementations | |
| 3532 } | |
| 3533 | |
| 3534 | |
| 3535 // Multi arrays | |
| 3536 void TemplateTable::multianewarray() { | |
| 3537 transition(vtos, atos); | |
| 3538 __ load_unsigned_byte(rax, at_bcp(3)); // get number of dimensions | |
| 3539 // last dim is on top of stack; we want address of first one: | |
| 3540 // first_addr = last_addr + (ndims - 1) * wordSize | |
| 3541 if (TaggedStackInterpreter) __ shll(rax, 1); // index*2 | |
| 3542 __ leaq(c_rarg1, Address(rsp, rax, Address::times_8, -wordSize)); | |
| 3543 call_VM(rax, | |
| 3544 CAST_FROM_FN_PTR(address, InterpreterRuntime::multianewarray), | |
| 3545 c_rarg1); | |
| 3546 __ load_unsigned_byte(rbx, at_bcp(3)); | |
| 3547 if (TaggedStackInterpreter) __ shll(rbx, 1); // index*2 | |
| 3548 __ leaq(rsp, Address(rsp, rbx, Address::times_8)); | |
| 3549 } |