os_solaris_sparc.cpp revision 1601:126ea7725993
1/* 2 * Copyright (c) 1999, 2009, 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// do not include precompiled header file 26 27# include <signal.h> // needed first to avoid name collision for "std" with SC 5.0 28 29# include "incls/_os_solaris_sparc.cpp.incl" 30 31// put OS-includes here 32# include <sys/types.h> 33# include <sys/mman.h> 34# include <pthread.h> 35# include <errno.h> 36# include <dlfcn.h> 37# include <stdio.h> 38# include <unistd.h> 39# include <sys/resource.h> 40# include <thread.h> 41# include <sys/stat.h> 42# include <sys/time.h> 43# include <sys/filio.h> 44# include <sys/utsname.h> 45# include <sys/systeminfo.h> 46# include <sys/socket.h> 47# include <sys/lwp.h> 48# include <pwd.h> 49# include <poll.h> 50# include <sys/lwp.h> 51 52# define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later 53# include <sys/procfs.h> // see comment in <sys/procfs.h> 54 55#define MAX_PATH (2 * K) 56 57// Minimum stack size for the VM. It's easier to document a constant 58// but it's different for x86 and sparc because the page sizes are different. 59#ifdef _LP64 60size_t os::Solaris::min_stack_allowed = 128*K; 61#else 62size_t os::Solaris::min_stack_allowed = 96*K; 63#endif 64 65int os::Solaris::max_register_window_saves_before_flushing() { 66 // We should detect this at run time. For now, filling 67 // in with a constant. 68 return 8; 69} 70 71static void handle_unflushed_register_windows(gwindows_t *win) { 72 int restore_count = win->wbcnt; 73 int i; 74 75 for(i=0; i<restore_count; i++) { 76 address sp = ((address)win->spbuf[i]) + STACK_BIAS; 77 address reg_win = (address)&win->wbuf[i]; 78 memcpy(sp,reg_win,sizeof(struct rwindow)); 79 } 80} 81 82char* os::non_memory_address_word() { 83 // Must never look like an address returned by reserve_memory, 84 // even in its subfields (as defined by the CPU immediate fields, 85 // if the CPU splits constants across multiple instructions). 86 // On SPARC, 0 != %hi(any real address), because there is no 87 // allocation in the first 1Kb of the virtual address space. 88 return (char*) 0; 89} 90 91// Validate a ucontext retrieved from walking a uc_link of a ucontext. 92// There are issues with libthread giving out uc_links for different threads 93// on the same uc_link chain and bad or circular links. 94// 95bool os::Solaris::valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect) { 96 if (valid >= suspect || 97 valid->uc_stack.ss_flags != suspect->uc_stack.ss_flags || 98 valid->uc_stack.ss_sp != suspect->uc_stack.ss_sp || 99 valid->uc_stack.ss_size != suspect->uc_stack.ss_size) { 100 DEBUG_ONLY(tty->print_cr("valid_ucontext: failed test 1");) 101 return false; 102 } 103 104 if (thread->is_Java_thread()) { 105 if (!valid_stack_address(thread, (address)suspect)) { 106 DEBUG_ONLY(tty->print_cr("valid_ucontext: uc_link not in thread stack");) 107 return false; 108 } 109 address _sp = (address)((intptr_t)suspect->uc_mcontext.gregs[REG_SP] + STACK_BIAS); 110 if (!valid_stack_address(thread, _sp) || 111 !frame::is_valid_stack_pointer(((JavaThread*)thread)->base_of_stack_pointer(), (intptr_t*)_sp)) { 112 DEBUG_ONLY(tty->print_cr("valid_ucontext: stackpointer not in thread stack");) 113 return false; 114 } 115 } 116 return true; 117} 118 119// We will only follow one level of uc_link since there are libthread 120// issues with ucontext linking and it is better to be safe and just 121// let caller retry later. 122ucontext_t* os::Solaris::get_valid_uc_in_signal_handler(Thread *thread, 123 ucontext_t *uc) { 124 125 ucontext_t *retuc = NULL; 126 127 // Sometimes the topmost register windows are not properly flushed. 128 // i.e., if the kernel would have needed to take a page fault 129 if (uc != NULL && uc->uc_mcontext.gwins != NULL) { 130 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 131 } 132 133 if (uc != NULL) { 134 if (uc->uc_link == NULL) { 135 // cannot validate without uc_link so accept current ucontext 136 retuc = uc; 137 } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { 138 // first ucontext is valid so try the next one 139 uc = uc->uc_link; 140 if (uc->uc_link == NULL) { 141 // cannot validate without uc_link so accept current ucontext 142 retuc = uc; 143 } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { 144 // the ucontext one level down is also valid so return it 145 retuc = uc; 146 } 147 } 148 } 149 return retuc; 150} 151 152// Assumes ucontext is valid 153ExtendedPC os::Solaris::ucontext_get_ExtendedPC(ucontext_t *uc) { 154 address pc = (address)uc->uc_mcontext.gregs[REG_PC]; 155 // set npc to zero to avoid using it for safepoint, good for profiling only 156 return ExtendedPC(pc); 157} 158 159// Assumes ucontext is valid 160intptr_t* os::Solaris::ucontext_get_sp(ucontext_t *uc) { 161 return (intptr_t*)((intptr_t)uc->uc_mcontext.gregs[REG_SP] + STACK_BIAS); 162} 163 164// Solaris X86 only 165intptr_t* os::Solaris::ucontext_get_fp(ucontext_t *uc) { 166 ShouldNotReachHere(); 167 return NULL; 168} 169 170// For Forte Analyzer AsyncGetCallTrace profiling support - thread 171// is currently interrupted by SIGPROF. 172// 173// ret_fp parameter is only used by Solaris X86. 174// 175// The difference between this and os::fetch_frame_from_context() is that 176// here we try to skip nested signal frames. 177ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread, 178 ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) { 179 180 assert(thread != NULL, "just checking"); 181 assert(ret_sp != NULL, "just checking"); 182 assert(ret_fp == NULL, "just checking"); 183 184 ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc); 185 186 return os::fetch_frame_from_context(luc, ret_sp, ret_fp); 187} 188 189 190// ret_fp parameter is only used by Solaris X86. 191ExtendedPC os::fetch_frame_from_context(void* ucVoid, 192 intptr_t** ret_sp, intptr_t** ret_fp) { 193 194 ExtendedPC epc; 195 ucontext_t *uc = (ucontext_t*)ucVoid; 196 197 if (uc != NULL) { 198 epc = os::Solaris::ucontext_get_ExtendedPC(uc); 199 if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc); 200 } else { 201 // construct empty ExtendedPC for return value checking 202 epc = ExtendedPC(NULL); 203 if (ret_sp) *ret_sp = (intptr_t *)NULL; 204 } 205 206 return epc; 207} 208 209frame os::fetch_frame_from_context(void* ucVoid) { 210 intptr_t* sp; 211 intptr_t* fp; 212 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); 213 return frame(sp, frame::unpatchable, epc.pc()); 214} 215 216frame os::get_sender_for_C_frame(frame* fr) { 217 return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc()); 218} 219 220frame os::current_frame() { 221 intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); 222 frame myframe(sp, frame::unpatchable, 223 CAST_FROM_FN_PTR(address, os::current_frame)); 224 if (os::is_first_C_frame(&myframe)) { 225 // stack is not walkable 226 return frame(NULL, NULL, NULL); 227 } else { 228 return os::get_sender_for_C_frame(&myframe); 229 } 230} 231 232 233void GetThreadPC_Callback::execute(OSThread::InterruptArguments *args) { 234 Thread* thread = args->thread(); 235 ucontext_t* uc = args->ucontext(); 236 intptr_t* sp; 237 238 assert(ProfileVM && thread->is_VM_thread(), "just checking"); 239 240 // Skip the mcontext corruption verification. If if occasionally 241 // things get corrupt, it is ok for profiling - we will just get an unresolved 242 // function name 243 ExtendedPC new_addr((address)uc->uc_mcontext.gregs[REG_PC]); 244 _addr = new_addr; 245} 246 247 248static int threadgetstate(thread_t tid, int *flags, lwpid_t *lwp, stack_t *ss, gregset_t rs, lwpstatus_t *lwpstatus) { 249 char lwpstatusfile[PROCFILE_LENGTH]; 250 int lwpfd, err; 251 252 if (err = os::Solaris::thr_getstate(tid, flags, lwp, ss, rs)) 253 return (err); 254 if (*flags == TRS_LWPID) { 255 sprintf(lwpstatusfile, "/proc/%d/lwp/%d/lwpstatus", getpid(), 256 *lwp); 257 if ((lwpfd = open(lwpstatusfile, O_RDONLY)) < 0) { 258 perror("thr_mutator_status: open lwpstatus"); 259 return (EINVAL); 260 } 261 if (pread(lwpfd, lwpstatus, sizeof (lwpstatus_t), (off_t)0) != 262 sizeof (lwpstatus_t)) { 263 perror("thr_mutator_status: read lwpstatus"); 264 (void) close(lwpfd); 265 return (EINVAL); 266 } 267 (void) close(lwpfd); 268 } 269 return (0); 270} 271 272 273bool os::is_allocatable(size_t bytes) { 274#ifdef _LP64 275 return true; 276#else 277 return (bytes <= (size_t)3835*M); 278#endif 279} 280 281extern "C" void Fetch32PFI () ; 282extern "C" void Fetch32Resume () ; 283extern "C" void FetchNPFI () ; 284extern "C" void FetchNResume () ; 285 286extern "C" int JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, int abort_if_unrecognized); 287 288int JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) { 289 ucontext_t* uc = (ucontext_t*) ucVoid; 290 291 Thread* t = ThreadLocalStorage::get_thread_slow(); 292 293 SignalHandlerMark shm(t); 294 295 if(sig == SIGPIPE || sig == SIGXFSZ) { 296 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 297 return true; 298 } else { 299 if (PrintMiscellaneous && (WizardMode || Verbose)) { 300 char buf[64]; 301 warning("Ignoring %s - see 4229104 or 6499219", 302 os::exception_name(sig, buf, sizeof(buf))); 303 304 } 305 return true; 306 } 307 } 308 309 JavaThread* thread = NULL; 310 VMThread* vmthread = NULL; 311 if (os::Solaris::signal_handlers_are_installed) { 312 if (t != NULL ){ 313 if(t->is_Java_thread()) { 314 thread = (JavaThread*)t; 315 } 316 else if(t->is_VM_thread()){ 317 vmthread = (VMThread *)t; 318 } 319 } 320 } 321 322 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs"); 323 324 if (sig == os::Solaris::SIGasync()) { 325 if (thread) { 326 OSThread::InterruptArguments args(thread, uc); 327 thread->osthread()->do_interrupt_callbacks_at_interrupt(&args); 328 return true; 329 } else if (vmthread) { 330 OSThread::InterruptArguments args(vmthread, uc); 331 vmthread->osthread()->do_interrupt_callbacks_at_interrupt(&args); 332 return true; 333 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { 334 return true; 335 } else { 336 // If os::Solaris::SIGasync not chained, and this is a non-vm and 337 // non-java thread 338 return true; 339 } 340 } 341 342 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { 343 // can't decode this kind of signal 344 info = NULL; 345 } else { 346 assert(sig == info->si_signo, "bad siginfo"); 347 } 348 349 // decide if this trap can be handled by a stub 350 address stub = NULL; 351 352 address pc = NULL; 353 address npc = NULL; 354 355 //%note os_trap_1 356 if (info != NULL && uc != NULL && thread != NULL) { 357 // factor me: getPCfromContext 358 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 359 npc = (address) uc->uc_mcontext.gregs[REG_nPC]; 360 361 // SafeFetch() support 362 // Implemented with either a fixed set of addresses such 363 // as Fetch32*, or with Thread._OnTrap. 364 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) { 365 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ; 366 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ; 367 return true ; 368 } 369 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) { 370 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ; 371 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ; 372 return true ; 373 } 374 375 // Handle ALL stack overflow variations here 376 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { 377 address addr = (address) info->si_addr; 378 if (thread->in_stack_yellow_zone(addr)) { 379 thread->disable_stack_yellow_zone(); 380 // Sometimes the register windows are not properly flushed. 381 if(uc->uc_mcontext.gwins != NULL) { 382 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 383 } 384 if (thread->thread_state() == _thread_in_Java) { 385 // Throw a stack overflow exception. Guard pages will be reenabled 386 // while unwinding the stack. 387 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); 388 } else { 389 // Thread was in the vm or native code. Return and try to finish. 390 return true; 391 } 392 } else if (thread->in_stack_red_zone(addr)) { 393 // Fatal red zone violation. Disable the guard pages and fall through 394 // to handle_unexpected_exception way down below. 395 thread->disable_stack_red_zone(); 396 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); 397 // Sometimes the register windows are not properly flushed. 398 if(uc->uc_mcontext.gwins != NULL) { 399 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 400 } 401 } 402 } 403 404 405 if (thread->thread_state() == _thread_in_vm) { 406 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { 407 stub = StubRoutines::handler_for_unsafe_access(); 408 } 409 } 410 411 else if (thread->thread_state() == _thread_in_Java) { 412 // Java thread running in Java code => find exception handler if any 413 // a fault inside compiled code, the interpreter, or a stub 414 415 // Support Safepoint Polling 416 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { 417 stub = SharedRuntime::get_poll_stub(pc); 418 } 419 420 // Not needed on x86 solaris because verify_oops doesn't generate 421 // SEGV/BUS like sparc does. 422 if ( (sig == SIGSEGV || sig == SIGBUS) 423 && pc >= MacroAssembler::_verify_oop_implicit_branch[0] 424 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { 425 stub = MacroAssembler::_verify_oop_implicit_branch[2]; 426 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); 427 } 428 429 // This is not factored because on x86 solaris the patching for 430 // zombies does not generate a SEGV. 431 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { 432 // zombie method (ld [%g0],%o7 instruction) 433 stub = SharedRuntime::get_handle_wrong_method_stub(); 434 435 // At the stub it needs to look like a call from the caller of this 436 // method (not a call from the segv site). 437 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 438 } 439 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { 440 // BugId 4454115: A read from a MappedByteBuffer can fault 441 // here if the underlying file has been truncated. 442 // Do not crash the VM in such a case. 443 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 444 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; 445 if (nm != NULL && nm->has_unsafe_access()) { 446 stub = StubRoutines::handler_for_unsafe_access(); 447 } 448 } 449 450 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { 451 // integer divide by zero 452 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 453 } 454 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { 455 // floating-point divide by zero 456 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 457 } 458#ifdef COMPILER2 459 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { 460#ifdef ASSERT 461 #ifdef TIERED 462 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 463 assert(cb->is_compiled_by_c2(), "Wrong compiler"); 464 #endif // TIERED 465#endif // ASSERT 466 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. 467 stub = SharedRuntime::get_ic_miss_stub(); 468 // At the stub it needs to look like a call from the caller of this 469 // method (not a call from the segv site). 470 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 471 } 472#endif // COMPILER2 473 474 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { 475 // Determination of interpreter/vtable stub/compiled code null exception 476 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); 477 } 478 } 479 480 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in 481 // and the heap gets shrunk before the field access. 482 if ((sig == SIGSEGV) || (sig == SIGBUS)) { 483 address addr = JNI_FastGetField::find_slowcase_pc(pc); 484 if (addr != (address)-1) { 485 stub = addr; 486 } 487 } 488 489 // Check to see if we caught the safepoint code in the 490 // process of write protecting the memory serialization page. 491 // It write enables the page immediately after protecting it 492 // so just return. 493 if ((sig == SIGSEGV) && 494 os::is_memory_serialize_page(thread, (address)info->si_addr)) { 495 // Block current thread until the memory serialize page permission restored. 496 os::block_on_serialize_page_trap(); 497 return true; 498 } 499 } 500 501 if (stub != NULL) { 502 // save all thread context in case we need to restore it 503 504 thread->set_saved_exception_pc(pc); 505 thread->set_saved_exception_npc(npc); 506 507 // simulate a branch to the stub (a "call" in the safepoint stub case) 508 // factor me: setPC 509 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub; 510 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4); 511 512#ifndef PRODUCT 513 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); 514#endif /* PRODUCT */ 515 516 return true; 517 } 518 519 // signal-chaining 520 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 521 return true; 522 } 523 524 if (!abort_if_unrecognized) { 525 // caller wants another chance, so give it to him 526 return false; 527 } 528 529 if (!os::Solaris::libjsig_is_loaded) { 530 struct sigaction oldAct; 531 sigaction(sig, (struct sigaction *)0, &oldAct); 532 if (oldAct.sa_sigaction != signalHandler) { 533 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) 534 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); 535 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); 536 } 537 } 538 539 if (pc == NULL && uc != NULL) { 540 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 541 } 542 543 // unmask current signal 544 sigset_t newset; 545 sigemptyset(&newset); 546 sigaddset(&newset, sig); 547 sigprocmask(SIG_UNBLOCK, &newset, NULL); 548 549 VMError err(t, sig, pc, info, ucVoid); 550 err.report_and_die(); 551 552 ShouldNotReachHere(); 553} 554 555void os::print_context(outputStream *st, void *context) { 556 if (context == NULL) return; 557 558 ucontext_t *uc = (ucontext_t*)context; 559 st->print_cr("Registers:"); 560 561 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT 562 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, 563 uc->uc_mcontext.gregs[REG_O0], 564 uc->uc_mcontext.gregs[REG_O1], 565 uc->uc_mcontext.gregs[REG_O2], 566 uc->uc_mcontext.gregs[REG_O3]); 567 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT 568 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, 569 uc->uc_mcontext.gregs[REG_O4], 570 uc->uc_mcontext.gregs[REG_O5], 571 uc->uc_mcontext.gregs[REG_O6], 572 uc->uc_mcontext.gregs[REG_O7]); 573 574 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT 575 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, 576 uc->uc_mcontext.gregs[REG_G1], 577 uc->uc_mcontext.gregs[REG_G2], 578 uc->uc_mcontext.gregs[REG_G3], 579 uc->uc_mcontext.gregs[REG_G4]); 580 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT 581 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, 582 uc->uc_mcontext.gregs[REG_G5], 583 uc->uc_mcontext.gregs[REG_G6], 584 uc->uc_mcontext.gregs[REG_G7], 585 uc->uc_mcontext.gregs[REG_Y]); 586 587 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, 588 uc->uc_mcontext.gregs[REG_PC], 589 uc->uc_mcontext.gregs[REG_nPC]); 590 591 st->cr(); 592 st->cr(); 593 594 st->print_cr("Register to memory mapping:"); 595 st->cr(); 596 597 // this is only for the "general purpose" registers 598 599 st->print_cr("O0=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O0]); 600 print_location(st, uc->uc_mcontext.gregs[REG_O0]); 601 st->cr(); 602 st->print_cr("O1=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O1]); 603 print_location(st, uc->uc_mcontext.gregs[REG_O1]); 604 st->cr(); 605 st->print_cr("O2=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O2]); 606 print_location(st, uc->uc_mcontext.gregs[REG_O2]); 607 st->cr(); 608 st->print_cr("O3=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O3]); 609 print_location(st, uc->uc_mcontext.gregs[REG_O3]); 610 st->cr(); 611 st->print_cr("O4=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O4]); 612 print_location(st, uc->uc_mcontext.gregs[REG_O4]); 613 st->cr(); 614 st->print_cr("O5=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O5]); 615 print_location(st, uc->uc_mcontext.gregs[REG_O5]); 616 st->cr(); 617 st->print_cr("O6=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O6]); 618 print_location(st, uc->uc_mcontext.gregs[REG_O6]); 619 st->cr(); 620 st->print_cr("O7=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O7]); 621 print_location(st, uc->uc_mcontext.gregs[REG_O7]); 622 st->cr(); 623 624 st->print_cr("G1=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G1]); 625 print_location(st, uc->uc_mcontext.gregs[REG_G1]); 626 st->cr(); 627 st->print_cr("G2=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G2]); 628 print_location(st, uc->uc_mcontext.gregs[REG_G2]); 629 st->cr(); 630 st->print_cr("G3=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G3]); 631 print_location(st, uc->uc_mcontext.gregs[REG_G3]); 632 st->cr(); 633 st->print_cr("G4=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G4]); 634 print_location(st, uc->uc_mcontext.gregs[REG_G4]); 635 st->cr(); 636 st->print_cr("G5=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G5]); 637 print_location(st, uc->uc_mcontext.gregs[REG_G5]); 638 st->cr(); 639 st->print_cr("G6=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G6]); 640 print_location(st, uc->uc_mcontext.gregs[REG_G6]); 641 st->cr(); 642 st->print_cr("G7=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G7]); 643 print_location(st, uc->uc_mcontext.gregs[REG_G7]); 644 645 st->cr(); 646 st->cr(); 647 648 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 649 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); 650 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); 651 st->cr(); 652 653 // Note: it may be unsafe to inspect memory near pc. For example, pc may 654 // point to garbage if entry point in an nmethod is corrupted. Leave 655 // this at the end, and hope for the best. 656 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); 657 address pc = epc.pc(); 658 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); 659 print_hex_dump(st, pc - 16, pc + 16, sizeof(char)); 660} 661 662void os::Solaris::init_thread_fpu_state(void) { 663 // Nothing needed on Sparc. 664} 665 666#if !defined(COMPILER2) && !defined(_LP64) 667 668// These routines are the initial value of atomic_xchg_entry(), 669// atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() 670// until initialization is complete. 671// TODO - remove when the VM drops support for V8. 672 673typedef jint xchg_func_t (jint, volatile jint*); 674typedef jint cmpxchg_func_t (jint, volatile jint*, jint); 675typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); 676typedef jint add_func_t (jint, volatile jint*); 677 678jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { 679 // try to use the stub: 680 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); 681 682 if (func != NULL) { 683 os::atomic_xchg_func = func; 684 return (*func)(exchange_value, dest); 685 } 686 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 687 688 jint old_value = *dest; 689 *dest = exchange_value; 690 return old_value; 691} 692 693jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { 694 // try to use the stub: 695 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); 696 697 if (func != NULL) { 698 os::atomic_cmpxchg_func = func; 699 return (*func)(exchange_value, dest, compare_value); 700 } 701 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 702 703 jint old_value = *dest; 704 if (old_value == compare_value) 705 *dest = exchange_value; 706 return old_value; 707} 708 709jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { 710 // try to use the stub: 711 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); 712 713 if (func != NULL) { 714 os::atomic_cmpxchg_long_func = func; 715 return (*func)(exchange_value, dest, compare_value); 716 } 717 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 718 719 jlong old_value = *dest; 720 if (old_value == compare_value) 721 *dest = exchange_value; 722 return old_value; 723} 724 725jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { 726 // try to use the stub: 727 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); 728 729 if (func != NULL) { 730 os::atomic_add_func = func; 731 return (*func)(add_value, dest); 732 } 733 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 734 735 return (*dest) += add_value; 736} 737 738xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; 739cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; 740cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; 741add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; 742 743#endif // !_LP64 && !COMPILER2 744 745#if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) 746 // See file build/solaris/makefiles/$compiler.make 747 // For compiler1 the architecture is v8 and frps isn't present in v8 748 extern "C" void _mark_fpu_nosave() { 749 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); 750 } 751#endif //defined(__sparc) && defined(COMPILER2) 752