c1_Runtime1_sparc.cpp revision 3602:da91efe96a93
1/* 2 * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "c1/c1_Defs.hpp" 27#include "c1/c1_MacroAssembler.hpp" 28#include "c1/c1_Runtime1.hpp" 29#include "interpreter/interpreter.hpp" 30#include "nativeInst_sparc.hpp" 31#include "oops/compiledICHolder.hpp" 32#include "oops/oop.inline.hpp" 33#include "prims/jvmtiExport.hpp" 34#include "register_sparc.hpp" 35#include "runtime/sharedRuntime.hpp" 36#include "runtime/signature.hpp" 37#include "runtime/vframeArray.hpp" 38#include "vmreg_sparc.inline.hpp" 39 40// Implementation of StubAssembler 41 42int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry_point, int number_of_arguments) { 43 // for sparc changing the number of arguments doesn't change 44 // anything about the frame size so we'll always lie and claim that 45 // we are only passing 1 argument. 46 set_num_rt_args(1); 47 48 assert_not_delayed(); 49 // bang stack before going to runtime 50 set(-os::vm_page_size() + STACK_BIAS, G3_scratch); 51 st(G0, SP, G3_scratch); 52 53 // debugging support 54 assert(number_of_arguments >= 0 , "cannot have negative number of arguments"); 55 56 set_last_Java_frame(SP, noreg); 57 if (VerifyThread) mov(G2_thread, O0); // about to be smashed; pass early 58 save_thread(L7_thread_cache); 59 // do the call 60 call(entry_point, relocInfo::runtime_call_type); 61 if (!VerifyThread) { 62 delayed()->mov(G2_thread, O0); // pass thread as first argument 63 } else { 64 delayed()->nop(); // (thread already passed) 65 } 66 int call_offset = offset(); // offset of return address 67 restore_thread(L7_thread_cache); 68 reset_last_Java_frame(); 69 70 // check for pending exceptions 71 { Label L; 72 Address exception_addr(G2_thread, Thread::pending_exception_offset()); 73 ld_ptr(exception_addr, Gtemp); 74 br_null_short(Gtemp, pt, L); 75 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); 76 st_ptr(G0, vm_result_addr); 77 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); 78 st_ptr(G0, vm_result_addr_2); 79 80 if (frame_size() == no_frame_size) { 81 // we use O7 linkage so that forward_exception_entry has the issuing PC 82 call(StubRoutines::forward_exception_entry(), relocInfo::runtime_call_type); 83 delayed()->restore(); 84 } else if (_stub_id == Runtime1::forward_exception_id) { 85 should_not_reach_here(); 86 } else { 87 AddressLiteral exc(Runtime1::entry_for(Runtime1::forward_exception_id)); 88 jump_to(exc, G4); 89 delayed()->nop(); 90 } 91 bind(L); 92 } 93 94 // get oop result if there is one and reset the value in the thread 95 if (oop_result1->is_valid()) { // get oop result if there is one and reset it in the thread 96 get_vm_result (oop_result1); 97 } else { 98 // be a little paranoid and clear the result 99 Address vm_result_addr(G2_thread, JavaThread::vm_result_offset()); 100 st_ptr(G0, vm_result_addr); 101 } 102 103 // get second result if there is one and reset the value in the thread 104 if (metadata_result->is_valid()) { 105 get_vm_result_2 (metadata_result); 106 } else { 107 // be a little paranoid and clear the result 108 Address vm_result_addr_2(G2_thread, JavaThread::vm_result_2_offset()); 109 st_ptr(G0, vm_result_addr_2); 110 } 111 112 return call_offset; 113} 114 115 116int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1) { 117 // O0 is reserved for the thread 118 mov(arg1, O1); 119 return call_RT(oop_result1, metadata_result, entry, 1); 120} 121 122 123int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2) { 124 // O0 is reserved for the thread 125 mov(arg1, O1); 126 mov(arg2, O2); assert(arg2 != O1, "smashed argument"); 127 return call_RT(oop_result1, metadata_result, entry, 2); 128} 129 130 131int StubAssembler::call_RT(Register oop_result1, Register metadata_result, address entry, Register arg1, Register arg2, Register arg3) { 132 // O0 is reserved for the thread 133 mov(arg1, O1); 134 mov(arg2, O2); assert(arg2 != O1, "smashed argument"); 135 mov(arg3, O3); assert(arg3 != O1 && arg3 != O2, "smashed argument"); 136 return call_RT(oop_result1, metadata_result, entry, 3); 137} 138 139 140// Implementation of Runtime1 141 142#define __ sasm-> 143 144static int cpu_reg_save_offsets[FrameMap::nof_cpu_regs]; 145static int fpu_reg_save_offsets[FrameMap::nof_fpu_regs]; 146static int reg_save_size_in_words; 147static int frame_size_in_bytes = -1; 148 149static OopMap* generate_oop_map(StubAssembler* sasm, bool save_fpu_registers) { 150 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), 151 "mismatch in calculation"); 152 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); 153 int frame_size_in_slots = frame_size_in_bytes / sizeof(jint); 154 OopMap* oop_map = new OopMap(frame_size_in_slots, 0); 155 156 int i; 157 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { 158 Register r = as_Register(i); 159 if (r == G1 || r == G3 || r == G4 || r == G5) { 160 int sp_offset = cpu_reg_save_offsets[i]; 161 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), 162 r->as_VMReg()); 163 } 164 } 165 166 if (save_fpu_registers) { 167 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { 168 FloatRegister r = as_FloatRegister(i); 169 int sp_offset = fpu_reg_save_offsets[i]; 170 oop_map->set_callee_saved(VMRegImpl::stack2reg(sp_offset), 171 r->as_VMReg()); 172 } 173 } 174 return oop_map; 175} 176 177static OopMap* save_live_registers(StubAssembler* sasm, bool save_fpu_registers = true) { 178 assert(frame_size_in_bytes == __ total_frame_size_in_bytes(reg_save_size_in_words), 179 "mismatch in calculation"); 180 __ save_frame_c1(frame_size_in_bytes); 181 182 // Record volatile registers as callee-save values in an OopMap so their save locations will be 183 // propagated to the caller frame's RegisterMap during StackFrameStream construction (needed for 184 // deoptimization; see compiledVFrame::create_stack_value). The caller's I, L and O registers 185 // are saved in register windows - I's and L's in the caller's frame and O's in the stub frame 186 // (as the stub's I's) when the runtime routine called by the stub creates its frame. 187 // OopMap frame sizes are in c2 stack slot sizes (sizeof(jint)) 188 189 int i; 190 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { 191 Register r = as_Register(i); 192 if (r == G1 || r == G3 || r == G4 || r == G5) { 193 int sp_offset = cpu_reg_save_offsets[i]; 194 __ st_ptr(r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); 195 } 196 } 197 198 if (save_fpu_registers) { 199 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { 200 FloatRegister r = as_FloatRegister(i); 201 int sp_offset = fpu_reg_save_offsets[i]; 202 __ stf(FloatRegisterImpl::S, r, SP, (sp_offset * BytesPerWord) + STACK_BIAS); 203 } 204 } 205 206 return generate_oop_map(sasm, save_fpu_registers); 207} 208 209static void restore_live_registers(StubAssembler* sasm, bool restore_fpu_registers = true) { 210 for (int i = 0; i < FrameMap::nof_cpu_regs; i++) { 211 Register r = as_Register(i); 212 if (r == G1 || r == G3 || r == G4 || r == G5) { 213 __ ld_ptr(SP, (cpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); 214 } 215 } 216 217 if (restore_fpu_registers) { 218 for (int i = 0; i < FrameMap::nof_fpu_regs; i++) { 219 FloatRegister r = as_FloatRegister(i); 220 __ ldf(FloatRegisterImpl::S, SP, (fpu_reg_save_offsets[i] * BytesPerWord) + STACK_BIAS, r); 221 } 222 } 223} 224 225 226void Runtime1::initialize_pd() { 227 // compute word offsets from SP at which live (non-windowed) registers are captured by stub routines 228 // 229 // A stub routine will have a frame that is at least large enough to hold 230 // a register window save area (obviously) and the volatile g registers 231 // and floating registers. A user of save_live_registers can have a frame 232 // that has more scratch area in it (although typically they will use L-regs). 233 // in that case the frame will look like this (stack growing down) 234 // 235 // FP -> | | 236 // | scratch mem | 237 // | " " | 238 // -------------- 239 // | float regs | 240 // | " " | 241 // --------------- 242 // | G regs | 243 // | " " | 244 // --------------- 245 // | abi reg. | 246 // | window save | 247 // | area | 248 // SP -> --------------- 249 // 250 int i; 251 int sp_offset = round_to(frame::register_save_words, 2); // start doubleword aligned 252 253 // only G int registers are saved explicitly; others are found in register windows 254 for (i = 0; i < FrameMap::nof_cpu_regs; i++) { 255 Register r = as_Register(i); 256 if (r == G1 || r == G3 || r == G4 || r == G5) { 257 cpu_reg_save_offsets[i] = sp_offset; 258 sp_offset++; 259 } 260 } 261 262 // all float registers are saved explicitly 263 assert(FrameMap::nof_fpu_regs == 32, "double registers not handled here"); 264 for (i = 0; i < FrameMap::nof_fpu_regs; i++) { 265 fpu_reg_save_offsets[i] = sp_offset; 266 sp_offset++; 267 } 268 reg_save_size_in_words = sp_offset - frame::memory_parameter_word_sp_offset; 269 // this should match assembler::total_frame_size_in_bytes, which 270 // isn't callable from this context. It's checked by an assert when 271 // it's used though. 272 frame_size_in_bytes = align_size_up(sp_offset * wordSize, 8); 273} 274 275 276OopMapSet* Runtime1::generate_exception_throw(StubAssembler* sasm, address target, bool has_argument) { 277 // make a frame and preserve the caller's caller-save registers 278 OopMap* oop_map = save_live_registers(sasm); 279 int call_offset; 280 if (!has_argument) { 281 call_offset = __ call_RT(noreg, noreg, target); 282 } else { 283 call_offset = __ call_RT(noreg, noreg, target, G4); 284 } 285 OopMapSet* oop_maps = new OopMapSet(); 286 oop_maps->add_gc_map(call_offset, oop_map); 287 288 __ should_not_reach_here(); 289 return oop_maps; 290} 291 292 293OopMapSet* Runtime1::generate_stub_call(StubAssembler* sasm, Register result, address target, 294 Register arg1, Register arg2, Register arg3) { 295 // make a frame and preserve the caller's caller-save registers 296 OopMap* oop_map = save_live_registers(sasm); 297 298 int call_offset; 299 if (arg1 == noreg) { 300 call_offset = __ call_RT(result, noreg, target); 301 } else if (arg2 == noreg) { 302 call_offset = __ call_RT(result, noreg, target, arg1); 303 } else if (arg3 == noreg) { 304 call_offset = __ call_RT(result, noreg, target, arg1, arg2); 305 } else { 306 call_offset = __ call_RT(result, noreg, target, arg1, arg2, arg3); 307 } 308 OopMapSet* oop_maps = NULL; 309 310 oop_maps = new OopMapSet(); 311 oop_maps->add_gc_map(call_offset, oop_map); 312 restore_live_registers(sasm); 313 314 __ ret(); 315 __ delayed()->restore(); 316 317 return oop_maps; 318} 319 320 321OopMapSet* Runtime1::generate_patching(StubAssembler* sasm, address target) { 322 // make a frame and preserve the caller's caller-save registers 323 OopMap* oop_map = save_live_registers(sasm); 324 325 // call the runtime patching routine, returns non-zero if nmethod got deopted. 326 int call_offset = __ call_RT(noreg, noreg, target); 327 OopMapSet* oop_maps = new OopMapSet(); 328 oop_maps->add_gc_map(call_offset, oop_map); 329 330 // re-execute the patched instruction or, if the nmethod was deoptmized, return to the 331 // deoptimization handler entry that will cause re-execution of the current bytecode 332 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); 333 assert(deopt_blob != NULL, "deoptimization blob must have been created"); 334 335 Label no_deopt; 336 __ br_null_short(O0, Assembler::pt, no_deopt); 337 338 // return to the deoptimization handler entry for unpacking and rexecute 339 // if we simply returned the we'd deopt as if any call we patched had just 340 // returned. 341 342 restore_live_registers(sasm); 343 344 AddressLiteral dest(deopt_blob->unpack_with_reexecution()); 345 __ jump_to(dest, O0); 346 __ delayed()->restore(); 347 348 __ bind(no_deopt); 349 restore_live_registers(sasm); 350 __ ret(); 351 __ delayed()->restore(); 352 353 return oop_maps; 354} 355 356OopMapSet* Runtime1::generate_code_for(StubID id, StubAssembler* sasm) { 357 358 OopMapSet* oop_maps = NULL; 359 // for better readability 360 const bool must_gc_arguments = true; 361 const bool dont_gc_arguments = false; 362 363 // stub code & info for the different stubs 364 switch (id) { 365 case forward_exception_id: 366 { 367 oop_maps = generate_handle_exception(id, sasm); 368 } 369 break; 370 371 case new_instance_id: 372 case fast_new_instance_id: 373 case fast_new_instance_init_check_id: 374 { 375 Register G5_klass = G5; // Incoming 376 Register O0_obj = O0; // Outgoing 377 378 if (id == new_instance_id) { 379 __ set_info("new_instance", dont_gc_arguments); 380 } else if (id == fast_new_instance_id) { 381 __ set_info("fast new_instance", dont_gc_arguments); 382 } else { 383 assert(id == fast_new_instance_init_check_id, "bad StubID"); 384 __ set_info("fast new_instance init check", dont_gc_arguments); 385 } 386 387 if ((id == fast_new_instance_id || id == fast_new_instance_init_check_id) && 388 UseTLAB && FastTLABRefill) { 389 Label slow_path; 390 Register G1_obj_size = G1; 391 Register G3_t1 = G3; 392 Register G4_t2 = G4; 393 assert_different_registers(G5_klass, G1_obj_size, G3_t1, G4_t2); 394 395 // Push a frame since we may do dtrace notification for the 396 // allocation which requires calling out and we don't want 397 // to stomp the real return address. 398 __ save_frame(0); 399 400 if (id == fast_new_instance_init_check_id) { 401 // make sure the klass is initialized 402 __ ldub(G5_klass, in_bytes(InstanceKlass::init_state_offset()), G3_t1); 403 __ cmp_and_br_short(G3_t1, InstanceKlass::fully_initialized, Assembler::notEqual, Assembler::pn, slow_path); 404 } 405#ifdef ASSERT 406 // assert object can be fast path allocated 407 { 408 Label ok, not_ok; 409 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); 410 // make sure it's an instance (LH > 0) 411 __ cmp_and_br_short(G1_obj_size, 0, Assembler::lessEqual, Assembler::pn, not_ok); 412 __ btst(Klass::_lh_instance_slow_path_bit, G1_obj_size); 413 __ br(Assembler::zero, false, Assembler::pn, ok); 414 __ delayed()->nop(); 415 __ bind(not_ok); 416 __ stop("assert(can be fast path allocated)"); 417 __ should_not_reach_here(); 418 __ bind(ok); 419 } 420#endif // ASSERT 421 // if we got here then the TLAB allocation failed, so try 422 // refilling the TLAB or allocating directly from eden. 423 Label retry_tlab, try_eden; 424 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G5_klass 425 426 __ bind(retry_tlab); 427 428 // get the instance size 429 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); 430 431 __ tlab_allocate(O0_obj, G1_obj_size, 0, G3_t1, slow_path); 432 433 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); 434 __ verify_oop(O0_obj); 435 __ mov(O0, I0); 436 __ ret(); 437 __ delayed()->restore(); 438 439 __ bind(try_eden); 440 // get the instance size 441 __ ld(G5_klass, in_bytes(Klass::layout_helper_offset()), G1_obj_size); 442 __ eden_allocate(O0_obj, G1_obj_size, 0, G3_t1, G4_t2, slow_path); 443 __ incr_allocated_bytes(G1_obj_size, G3_t1, G4_t2); 444 445 __ initialize_object(O0_obj, G5_klass, G1_obj_size, 0, G3_t1, G4_t2); 446 __ verify_oop(O0_obj); 447 __ mov(O0, I0); 448 __ ret(); 449 __ delayed()->restore(); 450 451 __ bind(slow_path); 452 453 // pop this frame so generate_stub_call can push it's own 454 __ restore(); 455 } 456 457 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_instance), G5_klass); 458 // I0->O0: new instance 459 } 460 461 break; 462 463 case counter_overflow_id: 464 // G4 contains bci, G5 contains method 465 oop_maps = generate_stub_call(sasm, noreg, CAST_FROM_FN_PTR(address, counter_overflow), G4, G5); 466 break; 467 468 case new_type_array_id: 469 case new_object_array_id: 470 { 471 Register G5_klass = G5; // Incoming 472 Register G4_length = G4; // Incoming 473 Register O0_obj = O0; // Outgoing 474 475 Address klass_lh(G5_klass, Klass::layout_helper_offset()); 476 assert(Klass::_lh_header_size_shift % BitsPerByte == 0, "bytewise"); 477 assert(Klass::_lh_header_size_mask == 0xFF, "bytewise"); 478 // Use this offset to pick out an individual byte of the layout_helper: 479 const int klass_lh_header_size_offset = ((BytesPerInt - 1) // 3 - 2 selects byte {0,1,0,0} 480 - Klass::_lh_header_size_shift / BitsPerByte); 481 482 if (id == new_type_array_id) { 483 __ set_info("new_type_array", dont_gc_arguments); 484 } else { 485 __ set_info("new_object_array", dont_gc_arguments); 486 } 487 488#ifdef ASSERT 489 // assert object type is really an array of the proper kind 490 { 491 Label ok; 492 Register G3_t1 = G3; 493 __ ld(klass_lh, G3_t1); 494 __ sra(G3_t1, Klass::_lh_array_tag_shift, G3_t1); 495 int tag = ((id == new_type_array_id) 496 ? Klass::_lh_array_tag_type_value 497 : Klass::_lh_array_tag_obj_value); 498 __ cmp_and_brx_short(G3_t1, tag, Assembler::equal, Assembler::pt, ok); 499 __ stop("assert(is an array klass)"); 500 __ should_not_reach_here(); 501 __ bind(ok); 502 } 503#endif // ASSERT 504 505 if (UseTLAB && FastTLABRefill) { 506 Label slow_path; 507 Register G1_arr_size = G1; 508 Register G3_t1 = G3; 509 Register O1_t2 = O1; 510 assert_different_registers(G5_klass, G4_length, G1_arr_size, G3_t1, O1_t2); 511 512 // check that array length is small enough for fast path 513 __ set(C1_MacroAssembler::max_array_allocation_length, G3_t1); 514 __ cmp_and_br_short(G4_length, G3_t1, Assembler::greaterUnsigned, Assembler::pn, slow_path); 515 516 // if we got here then the TLAB allocation failed, so try 517 // refilling the TLAB or allocating directly from eden. 518 Label retry_tlab, try_eden; 519 __ tlab_refill(retry_tlab, try_eden, slow_path); // preserves G4_length and G5_klass 520 521 __ bind(retry_tlab); 522 523 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size 524 __ ld(klass_lh, G3_t1); 525 __ sll(G4_length, G3_t1, G1_arr_size); 526 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); 527 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); 528 __ add(G1_arr_size, G3_t1, G1_arr_size); 529 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); // align up 530 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); 531 532 __ tlab_allocate(O0_obj, G1_arr_size, 0, G3_t1, slow_path); // preserves G1_arr_size 533 534 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); 535 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); 536 __ sub(G1_arr_size, G3_t1, O1_t2); // body length 537 __ add(O0_obj, G3_t1, G3_t1); // body start 538 __ initialize_body(G3_t1, O1_t2); 539 __ verify_oop(O0_obj); 540 __ retl(); 541 __ delayed()->nop(); 542 543 __ bind(try_eden); 544 // get the allocation size: (length << (layout_helper & 0x1F)) + header_size 545 __ ld(klass_lh, G3_t1); 546 __ sll(G4_length, G3_t1, G1_arr_size); 547 __ srl(G3_t1, Klass::_lh_header_size_shift, G3_t1); 548 __ and3(G3_t1, Klass::_lh_header_size_mask, G3_t1); 549 __ add(G1_arr_size, G3_t1, G1_arr_size); 550 __ add(G1_arr_size, MinObjAlignmentInBytesMask, G1_arr_size); 551 __ and3(G1_arr_size, ~MinObjAlignmentInBytesMask, G1_arr_size); 552 553 __ eden_allocate(O0_obj, G1_arr_size, 0, G3_t1, O1_t2, slow_path); // preserves G1_arr_size 554 __ incr_allocated_bytes(G1_arr_size, G3_t1, O1_t2); 555 556 __ initialize_header(O0_obj, G5_klass, G4_length, G3_t1, O1_t2); 557 __ ldub(klass_lh, G3_t1, klass_lh_header_size_offset); 558 __ sub(G1_arr_size, G3_t1, O1_t2); // body length 559 __ add(O0_obj, G3_t1, G3_t1); // body start 560 __ initialize_body(G3_t1, O1_t2); 561 __ verify_oop(O0_obj); 562 __ retl(); 563 __ delayed()->nop(); 564 565 __ bind(slow_path); 566 } 567 568 if (id == new_type_array_id) { 569 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_type_array), G5_klass, G4_length); 570 } else { 571 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_object_array), G5_klass, G4_length); 572 } 573 // I0 -> O0: new array 574 } 575 break; 576 577 case new_multi_array_id: 578 { // O0: klass 579 // O1: rank 580 // O2: address of 1st dimension 581 __ set_info("new_multi_array", dont_gc_arguments); 582 oop_maps = generate_stub_call(sasm, I0, CAST_FROM_FN_PTR(address, new_multi_array), I0, I1, I2); 583 // I0 -> O0: new multi array 584 } 585 break; 586 587 case register_finalizer_id: 588 { 589 __ set_info("register_finalizer", dont_gc_arguments); 590 591 // load the klass and check the has finalizer flag 592 Label register_finalizer; 593 Register t = O1; 594 __ load_klass(O0, t); 595 __ ld(t, in_bytes(Klass::access_flags_offset()), t); 596 __ set(JVM_ACC_HAS_FINALIZER, G3); 597 __ andcc(G3, t, G0); 598 __ br(Assembler::notZero, false, Assembler::pt, register_finalizer); 599 __ delayed()->nop(); 600 601 // do a leaf return 602 __ retl(); 603 __ delayed()->nop(); 604 605 __ bind(register_finalizer); 606 OopMap* oop_map = save_live_registers(sasm); 607 int call_offset = __ call_RT(noreg, noreg, 608 CAST_FROM_FN_PTR(address, SharedRuntime::register_finalizer), I0); 609 oop_maps = new OopMapSet(); 610 oop_maps->add_gc_map(call_offset, oop_map); 611 612 // Now restore all the live registers 613 restore_live_registers(sasm); 614 615 __ ret(); 616 __ delayed()->restore(); 617 } 618 break; 619 620 case throw_range_check_failed_id: 621 { __ set_info("range_check_failed", dont_gc_arguments); // arguments will be discarded 622 // G4: index 623 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_range_check_exception), true); 624 } 625 break; 626 627 case throw_index_exception_id: 628 { __ set_info("index_range_check_failed", dont_gc_arguments); // arguments will be discarded 629 // G4: index 630 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_index_exception), true); 631 } 632 break; 633 634 case throw_div0_exception_id: 635 { __ set_info("throw_div0_exception", dont_gc_arguments); 636 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_div0_exception), false); 637 } 638 break; 639 640 case throw_null_pointer_exception_id: 641 { __ set_info("throw_null_pointer_exception", dont_gc_arguments); 642 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_null_pointer_exception), false); 643 } 644 break; 645 646 case handle_exception_id: 647 { __ set_info("handle_exception", dont_gc_arguments); 648 oop_maps = generate_handle_exception(id, sasm); 649 } 650 break; 651 652 case handle_exception_from_callee_id: 653 { __ set_info("handle_exception_from_callee", dont_gc_arguments); 654 oop_maps = generate_handle_exception(id, sasm); 655 } 656 break; 657 658 case unwind_exception_id: 659 { 660 // O0: exception 661 // I7: address of call to this method 662 663 __ set_info("unwind_exception", dont_gc_arguments); 664 __ mov(Oexception, Oexception->after_save()); 665 __ add(I7, frame::pc_return_offset, Oissuing_pc->after_save()); 666 667 __ call_VM_leaf(L7_thread_cache, CAST_FROM_FN_PTR(address, SharedRuntime::exception_handler_for_return_address), 668 G2_thread, Oissuing_pc->after_save()); 669 __ verify_not_null_oop(Oexception->after_save()); 670 671 // Restore SP from L7 if the exception PC is a method handle call site. 672 __ mov(O0, G5); // Save the target address. 673 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); 674 __ tst(L0); // Condition codes are preserved over the restore. 675 __ restore(); 676 677 __ jmp(G5, 0); 678 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. 679 } 680 break; 681 682 case throw_array_store_exception_id: 683 { 684 __ set_info("throw_array_store_exception", dont_gc_arguments); 685 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_array_store_exception), true); 686 } 687 break; 688 689 case throw_class_cast_exception_id: 690 { 691 // G4: object 692 __ set_info("throw_class_cast_exception", dont_gc_arguments); 693 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_class_cast_exception), true); 694 } 695 break; 696 697 case throw_incompatible_class_change_error_id: 698 { 699 __ set_info("throw_incompatible_class_cast_exception", dont_gc_arguments); 700 oop_maps = generate_exception_throw(sasm, CAST_FROM_FN_PTR(address, throw_incompatible_class_change_error), false); 701 } 702 break; 703 704 case slow_subtype_check_id: 705 { // Support for uint StubRoutine::partial_subtype_check( Klass sub, Klass super ); 706 // Arguments : 707 // 708 // ret : G3 709 // sub : G3, argument, destroyed 710 // super: G1, argument, not changed 711 // raddr: O7, blown by call 712 Label miss; 713 714 __ save_frame(0); // Blow no registers! 715 716 __ check_klass_subtype_slow_path(G3, G1, L0, L1, L2, L4, NULL, &miss); 717 718 __ mov(1, G3); 719 __ ret(); // Result in G5 is 'true' 720 __ delayed()->restore(); // free copy or add can go here 721 722 __ bind(miss); 723 __ mov(0, G3); 724 __ ret(); // Result in G5 is 'false' 725 __ delayed()->restore(); // free copy or add can go here 726 } 727 728 case monitorenter_nofpu_id: 729 case monitorenter_id: 730 { // G4: object 731 // G5: lock address 732 __ set_info("monitorenter", dont_gc_arguments); 733 734 int save_fpu_registers = (id == monitorenter_id); 735 // make a frame and preserve the caller's caller-save registers 736 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); 737 738 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorenter), G4, G5); 739 740 oop_maps = new OopMapSet(); 741 oop_maps->add_gc_map(call_offset, oop_map); 742 restore_live_registers(sasm, save_fpu_registers); 743 744 __ ret(); 745 __ delayed()->restore(); 746 } 747 break; 748 749 case monitorexit_nofpu_id: 750 case monitorexit_id: 751 { // G4: lock address 752 // note: really a leaf routine but must setup last java sp 753 // => use call_RT for now (speed can be improved by 754 // doing last java sp setup manually) 755 __ set_info("monitorexit", dont_gc_arguments); 756 757 int save_fpu_registers = (id == monitorexit_id); 758 // make a frame and preserve the caller's caller-save registers 759 OopMap* oop_map = save_live_registers(sasm, save_fpu_registers); 760 761 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, monitorexit), G4); 762 763 oop_maps = new OopMapSet(); 764 oop_maps->add_gc_map(call_offset, oop_map); 765 restore_live_registers(sasm, save_fpu_registers); 766 767 __ ret(); 768 __ delayed()->restore(); 769 } 770 break; 771 772 case deoptimize_id: 773 { 774 __ set_info("deoptimize", dont_gc_arguments); 775 OopMap* oop_map = save_live_registers(sasm); 776 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, deoptimize)); 777 oop_maps = new OopMapSet(); 778 oop_maps->add_gc_map(call_offset, oop_map); 779 restore_live_registers(sasm); 780 DeoptimizationBlob* deopt_blob = SharedRuntime::deopt_blob(); 781 assert(deopt_blob != NULL, "deoptimization blob must have been created"); 782 AddressLiteral dest(deopt_blob->unpack_with_reexecution()); 783 __ jump_to(dest, O0); 784 __ delayed()->restore(); 785 } 786 break; 787 788 case access_field_patching_id: 789 { __ set_info("access_field_patching", dont_gc_arguments); 790 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, access_field_patching)); 791 } 792 break; 793 794 case load_klass_patching_id: 795 { __ set_info("load_klass_patching", dont_gc_arguments); 796 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_klass_patching)); 797 } 798 break; 799 800 case load_mirror_patching_id: 801 { __ set_info("load_mirror_patching", dont_gc_arguments); 802 oop_maps = generate_patching(sasm, CAST_FROM_FN_PTR(address, move_mirror_patching)); 803 } 804 break; 805 806 case dtrace_object_alloc_id: 807 { // O0: object 808 __ set_info("dtrace_object_alloc", dont_gc_arguments); 809 // we can't gc here so skip the oopmap but make sure that all 810 // the live registers get saved. 811 save_live_registers(sasm); 812 813 __ save_thread(L7_thread_cache); 814 __ call(CAST_FROM_FN_PTR(address, SharedRuntime::dtrace_object_alloc), 815 relocInfo::runtime_call_type); 816 __ delayed()->mov(I0, O0); 817 __ restore_thread(L7_thread_cache); 818 819 restore_live_registers(sasm); 820 __ ret(); 821 __ delayed()->restore(); 822 } 823 break; 824 825#ifndef SERIALGC 826 case g1_pre_barrier_slow_id: 827 { // G4: previous value of memory 828 BarrierSet* bs = Universe::heap()->barrier_set(); 829 if (bs->kind() != BarrierSet::G1SATBCTLogging) { 830 __ save_frame(0); 831 __ set((int)id, O1); 832 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); 833 __ should_not_reach_here(); 834 break; 835 } 836 837 __ set_info("g1_pre_barrier_slow_id", dont_gc_arguments); 838 839 Register pre_val = G4; 840 Register tmp = G1_scratch; 841 Register tmp2 = G3_scratch; 842 843 Label refill, restart; 844 bool with_frame = false; // I don't know if we can do with-frame. 845 int satb_q_index_byte_offset = 846 in_bytes(JavaThread::satb_mark_queue_offset() + 847 PtrQueue::byte_offset_of_index()); 848 int satb_q_buf_byte_offset = 849 in_bytes(JavaThread::satb_mark_queue_offset() + 850 PtrQueue::byte_offset_of_buf()); 851 852 __ bind(restart); 853 // Load the index into the SATB buffer. PtrQueue::_index is a 854 // size_t so ld_ptr is appropriate 855 __ ld_ptr(G2_thread, satb_q_index_byte_offset, tmp); 856 857 // index == 0? 858 __ cmp_and_brx_short(tmp, G0, Assembler::equal, Assembler::pn, refill); 859 860 __ ld_ptr(G2_thread, satb_q_buf_byte_offset, tmp2); 861 __ sub(tmp, oopSize, tmp); 862 863 __ st_ptr(pre_val, tmp2, tmp); // [_buf + index] := <address_of_card> 864 // Use return-from-leaf 865 __ retl(); 866 __ delayed()->st_ptr(tmp, G2_thread, satb_q_index_byte_offset); 867 868 __ bind(refill); 869 __ save_frame(0); 870 871 __ mov(pre_val, L0); 872 __ mov(tmp, L1); 873 __ mov(tmp2, L2); 874 875 __ call_VM_leaf(L7_thread_cache, 876 CAST_FROM_FN_PTR(address, 877 SATBMarkQueueSet::handle_zero_index_for_thread), 878 G2_thread); 879 880 __ mov(L0, pre_val); 881 __ mov(L1, tmp); 882 __ mov(L2, tmp2); 883 884 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); 885 __ delayed()->restore(); 886 } 887 break; 888 889 case g1_post_barrier_slow_id: 890 { 891 BarrierSet* bs = Universe::heap()->barrier_set(); 892 if (bs->kind() != BarrierSet::G1SATBCTLogging) { 893 __ save_frame(0); 894 __ set((int)id, O1); 895 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), I0); 896 __ should_not_reach_here(); 897 break; 898 } 899 900 __ set_info("g1_post_barrier_slow_id", dont_gc_arguments); 901 902 Register addr = G4; 903 Register cardtable = G5; 904 Register tmp = G1_scratch; 905 Register tmp2 = G3_scratch; 906 jbyte* byte_map_base = ((CardTableModRefBS*)bs)->byte_map_base; 907 908 Label not_already_dirty, restart, refill; 909 910#ifdef _LP64 911 __ srlx(addr, CardTableModRefBS::card_shift, addr); 912#else 913 __ srl(addr, CardTableModRefBS::card_shift, addr); 914#endif 915 916 AddressLiteral rs(byte_map_base); 917 __ set(rs, cardtable); // cardtable := <card table base> 918 __ ldub(addr, cardtable, tmp); // tmp := [addr + cardtable] 919 920 assert(CardTableModRefBS::dirty_card_val() == 0, "otherwise check this code"); 921 __ cmp_and_br_short(tmp, G0, Assembler::notEqual, Assembler::pt, not_already_dirty); 922 923 // We didn't take the branch, so we're already dirty: return. 924 // Use return-from-leaf 925 __ retl(); 926 __ delayed()->nop(); 927 928 // Not dirty. 929 __ bind(not_already_dirty); 930 931 // Get cardtable + tmp into a reg by itself 932 __ add(addr, cardtable, tmp2); 933 934 // First, dirty it. 935 __ stb(G0, tmp2, 0); // [cardPtr] := 0 (i.e., dirty). 936 937 Register tmp3 = cardtable; 938 Register tmp4 = tmp; 939 940 // these registers are now dead 941 addr = cardtable = tmp = noreg; 942 943 int dirty_card_q_index_byte_offset = 944 in_bytes(JavaThread::dirty_card_queue_offset() + 945 PtrQueue::byte_offset_of_index()); 946 int dirty_card_q_buf_byte_offset = 947 in_bytes(JavaThread::dirty_card_queue_offset() + 948 PtrQueue::byte_offset_of_buf()); 949 950 __ bind(restart); 951 952 // Get the index into the update buffer. PtrQueue::_index is 953 // a size_t so ld_ptr is appropriate here. 954 __ ld_ptr(G2_thread, dirty_card_q_index_byte_offset, tmp3); 955 956 // index == 0? 957 __ cmp_and_brx_short(tmp3, G0, Assembler::equal, Assembler::pn, refill); 958 959 __ ld_ptr(G2_thread, dirty_card_q_buf_byte_offset, tmp4); 960 __ sub(tmp3, oopSize, tmp3); 961 962 __ st_ptr(tmp2, tmp4, tmp3); // [_buf + index] := <address_of_card> 963 // Use return-from-leaf 964 __ retl(); 965 __ delayed()->st_ptr(tmp3, G2_thread, dirty_card_q_index_byte_offset); 966 967 __ bind(refill); 968 __ save_frame(0); 969 970 __ mov(tmp2, L0); 971 __ mov(tmp3, L1); 972 __ mov(tmp4, L2); 973 974 __ call_VM_leaf(L7_thread_cache, 975 CAST_FROM_FN_PTR(address, 976 DirtyCardQueueSet::handle_zero_index_for_thread), 977 G2_thread); 978 979 __ mov(L0, tmp2); 980 __ mov(L1, tmp3); 981 __ mov(L2, tmp4); 982 983 __ br(Assembler::always, /*annul*/false, Assembler::pt, restart); 984 __ delayed()->restore(); 985 } 986 break; 987#endif // !SERIALGC 988 989 default: 990 { __ set_info("unimplemented entry", dont_gc_arguments); 991 __ save_frame(0); 992 __ set((int)id, O1); 993 __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, unimplemented_entry), O1); 994 __ should_not_reach_here(); 995 } 996 break; 997 } 998 return oop_maps; 999} 1000 1001 1002OopMapSet* Runtime1::generate_handle_exception(StubID id, StubAssembler* sasm) { 1003 __ block_comment("generate_handle_exception"); 1004 1005 // Save registers, if required. 1006 OopMapSet* oop_maps = new OopMapSet(); 1007 OopMap* oop_map = NULL; 1008 switch (id) { 1009 case forward_exception_id: 1010 // We're handling an exception in the context of a compiled frame. 1011 // The registers have been saved in the standard places. Perform 1012 // an exception lookup in the caller and dispatch to the handler 1013 // if found. Otherwise unwind and dispatch to the callers 1014 // exception handler. 1015 oop_map = generate_oop_map(sasm, true); 1016 1017 // transfer the pending exception to the exception_oop 1018 __ ld_ptr(G2_thread, in_bytes(JavaThread::pending_exception_offset()), Oexception); 1019 __ ld_ptr(Oexception, 0, G0); 1020 __ st_ptr(G0, G2_thread, in_bytes(JavaThread::pending_exception_offset())); 1021 __ add(I7, frame::pc_return_offset, Oissuing_pc); 1022 break; 1023 case handle_exception_id: 1024 // At this point all registers MAY be live. 1025 oop_map = save_live_registers(sasm); 1026 __ mov(Oexception->after_save(), Oexception); 1027 __ mov(Oissuing_pc->after_save(), Oissuing_pc); 1028 break; 1029 case handle_exception_from_callee_id: 1030 // At this point all registers except exception oop (Oexception) 1031 // and exception pc (Oissuing_pc) are dead. 1032 oop_map = new OopMap(frame_size_in_bytes / sizeof(jint), 0); 1033 sasm->set_frame_size(frame_size_in_bytes / BytesPerWord); 1034 __ save_frame_c1(frame_size_in_bytes); 1035 __ mov(Oexception->after_save(), Oexception); 1036 __ mov(Oissuing_pc->after_save(), Oissuing_pc); 1037 break; 1038 default: ShouldNotReachHere(); 1039 } 1040 1041 __ verify_not_null_oop(Oexception); 1042 1043 // save the exception and issuing pc in the thread 1044 __ st_ptr(Oexception, G2_thread, in_bytes(JavaThread::exception_oop_offset())); 1045 __ st_ptr(Oissuing_pc, G2_thread, in_bytes(JavaThread::exception_pc_offset())); 1046 1047 // use the throwing pc as the return address to lookup (has bci & oop map) 1048 __ mov(Oissuing_pc, I7); 1049 __ sub(I7, frame::pc_return_offset, I7); 1050 int call_offset = __ call_RT(noreg, noreg, CAST_FROM_FN_PTR(address, exception_handler_for_pc)); 1051 oop_maps->add_gc_map(call_offset, oop_map); 1052 1053 // Note: if nmethod has been deoptimized then regardless of 1054 // whether it had a handler or not we will deoptimize 1055 // by entering the deopt blob with a pending exception. 1056 1057 // Restore the registers that were saved at the beginning, remove 1058 // the frame and jump to the exception handler. 1059 switch (id) { 1060 case forward_exception_id: 1061 case handle_exception_id: 1062 restore_live_registers(sasm); 1063 __ jmp(O0, 0); 1064 __ delayed()->restore(); 1065 break; 1066 case handle_exception_from_callee_id: 1067 // Restore SP from L7 if the exception PC is a method handle call site. 1068 __ mov(O0, G5); // Save the target address. 1069 __ lduw(Address(G2_thread, JavaThread::is_method_handle_return_offset()), L0); 1070 __ tst(L0); // Condition codes are preserved over the restore. 1071 __ restore(); 1072 1073 __ jmp(G5, 0); // jump to the exception handler 1074 __ delayed()->movcc(Assembler::notZero, false, Assembler::icc, L7_mh_SP_save, SP); // Restore SP if required. 1075 break; 1076 default: ShouldNotReachHere(); 1077 } 1078 1079 return oop_maps; 1080} 1081 1082 1083#undef __ 1084 1085const char *Runtime1::pd_name_for_address(address entry) { 1086 return "<unknown function>"; 1087} 1088