os_solaris_sparc.cpp revision 3701:bf2edd3c9b0f
1/* 2 * Copyright (c) 1999, 2011, 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// no precompiled headers 26#include "assembler_sparc.inline.hpp" 27#include "classfile/classLoader.hpp" 28#include "classfile/systemDictionary.hpp" 29#include "classfile/vmSymbols.hpp" 30#include "code/icBuffer.hpp" 31#include "code/vtableStubs.hpp" 32#include "interpreter/interpreter.hpp" 33#include "jvm_solaris.h" 34#include "memory/allocation.inline.hpp" 35#include "mutex_solaris.inline.hpp" 36#include "nativeInst_sparc.hpp" 37#include "os_share_solaris.hpp" 38#include "prims/jniFastGetField.hpp" 39#include "prims/jvm.h" 40#include "prims/jvm_misc.hpp" 41#include "runtime/arguments.hpp" 42#include "runtime/extendedPC.hpp" 43#include "runtime/frame.inline.hpp" 44#include "runtime/interfaceSupport.hpp" 45#include "runtime/java.hpp" 46#include "runtime/javaCalls.hpp" 47#include "runtime/mutexLocker.hpp" 48#include "runtime/osThread.hpp" 49#include "runtime/sharedRuntime.hpp" 50#include "runtime/stubRoutines.hpp" 51#include "runtime/timer.hpp" 52#include "thread_solaris.inline.hpp" 53#include "utilities/events.hpp" 54#include "utilities/vmError.hpp" 55 56# include <signal.h> // needed first to avoid name collision for "std" with SC 5.0 57 58// put OS-includes here 59# include <sys/types.h> 60# include <sys/mman.h> 61# include <pthread.h> 62# include <errno.h> 63# include <dlfcn.h> 64# include <stdio.h> 65# include <unistd.h> 66# include <sys/resource.h> 67# include <thread.h> 68# include <sys/stat.h> 69# include <sys/time.h> 70# include <sys/filio.h> 71# include <sys/utsname.h> 72# include <sys/systeminfo.h> 73# include <sys/socket.h> 74# include <sys/lwp.h> 75# include <pwd.h> 76# include <poll.h> 77# include <sys/lwp.h> 78 79# define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later 80# include <sys/procfs.h> // see comment in <sys/procfs.h> 81 82#define MAX_PATH (2 * K) 83 84// Minimum stack size for the VM. It's easier to document a constant 85// but it's different for x86 and sparc because the page sizes are different. 86#ifdef _LP64 87size_t os::Solaris::min_stack_allowed = 128*K; 88#else 89size_t os::Solaris::min_stack_allowed = 96*K; 90#endif 91 92int os::Solaris::max_register_window_saves_before_flushing() { 93 // We should detect this at run time. For now, filling 94 // in with a constant. 95 return 8; 96} 97 98static void handle_unflushed_register_windows(gwindows_t *win) { 99 int restore_count = win->wbcnt; 100 int i; 101 102 for(i=0; i<restore_count; i++) { 103 address sp = ((address)win->spbuf[i]) + STACK_BIAS; 104 address reg_win = (address)&win->wbuf[i]; 105 memcpy(sp,reg_win,sizeof(struct rwindow)); 106 } 107} 108 109char* os::non_memory_address_word() { 110 // Must never look like an address returned by reserve_memory, 111 // even in its subfields (as defined by the CPU immediate fields, 112 // if the CPU splits constants across multiple instructions). 113 // On SPARC, 0 != %hi(any real address), because there is no 114 // allocation in the first 1Kb of the virtual address space. 115 return (char*) 0; 116} 117 118// Validate a ucontext retrieved from walking a uc_link of a ucontext. 119// There are issues with libthread giving out uc_links for different threads 120// on the same uc_link chain and bad or circular links. 121// 122bool os::Solaris::valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect) { 123 if (valid >= suspect || 124 valid->uc_stack.ss_flags != suspect->uc_stack.ss_flags || 125 valid->uc_stack.ss_sp != suspect->uc_stack.ss_sp || 126 valid->uc_stack.ss_size != suspect->uc_stack.ss_size) { 127 DEBUG_ONLY(tty->print_cr("valid_ucontext: failed test 1");) 128 return false; 129 } 130 131 if (thread->is_Java_thread()) { 132 if (!valid_stack_address(thread, (address)suspect)) { 133 DEBUG_ONLY(tty->print_cr("valid_ucontext: uc_link not in thread stack");) 134 return false; 135 } 136 address _sp = (address)((intptr_t)suspect->uc_mcontext.gregs[REG_SP] + STACK_BIAS); 137 if (!valid_stack_address(thread, _sp) || 138 !frame::is_valid_stack_pointer(((JavaThread*)thread)->base_of_stack_pointer(), (intptr_t*)_sp)) { 139 DEBUG_ONLY(tty->print_cr("valid_ucontext: stackpointer not in thread stack");) 140 return false; 141 } 142 } 143 return true; 144} 145 146// We will only follow one level of uc_link since there are libthread 147// issues with ucontext linking and it is better to be safe and just 148// let caller retry later. 149ucontext_t* os::Solaris::get_valid_uc_in_signal_handler(Thread *thread, 150 ucontext_t *uc) { 151 152 ucontext_t *retuc = NULL; 153 154 // Sometimes the topmost register windows are not properly flushed. 155 // i.e., if the kernel would have needed to take a page fault 156 if (uc != NULL && uc->uc_mcontext.gwins != NULL) { 157 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 158 } 159 160 if (uc != NULL) { 161 if (uc->uc_link == NULL) { 162 // cannot validate without uc_link so accept current ucontext 163 retuc = uc; 164 } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { 165 // first ucontext is valid so try the next one 166 uc = uc->uc_link; 167 if (uc->uc_link == NULL) { 168 // cannot validate without uc_link so accept current ucontext 169 retuc = uc; 170 } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { 171 // the ucontext one level down is also valid so return it 172 retuc = uc; 173 } 174 } 175 } 176 return retuc; 177} 178 179// Assumes ucontext is valid 180ExtendedPC os::Solaris::ucontext_get_ExtendedPC(ucontext_t *uc) { 181 address pc = (address)uc->uc_mcontext.gregs[REG_PC]; 182 // set npc to zero to avoid using it for safepoint, good for profiling only 183 return ExtendedPC(pc); 184} 185 186// Assumes ucontext is valid 187intptr_t* os::Solaris::ucontext_get_sp(ucontext_t *uc) { 188 return (intptr_t*)((intptr_t)uc->uc_mcontext.gregs[REG_SP] + STACK_BIAS); 189} 190 191// Solaris X86 only 192intptr_t* os::Solaris::ucontext_get_fp(ucontext_t *uc) { 193 ShouldNotReachHere(); 194 return NULL; 195} 196 197// For Forte Analyzer AsyncGetCallTrace profiling support - thread 198// is currently interrupted by SIGPROF. 199// 200// ret_fp parameter is only used by Solaris X86. 201// 202// The difference between this and os::fetch_frame_from_context() is that 203// here we try to skip nested signal frames. 204ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread, 205 ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) { 206 207 assert(thread != NULL, "just checking"); 208 assert(ret_sp != NULL, "just checking"); 209 assert(ret_fp == NULL, "just checking"); 210 211 ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc); 212 213 return os::fetch_frame_from_context(luc, ret_sp, ret_fp); 214} 215 216 217// ret_fp parameter is only used by Solaris X86. 218ExtendedPC os::fetch_frame_from_context(void* ucVoid, 219 intptr_t** ret_sp, intptr_t** ret_fp) { 220 221 ExtendedPC epc; 222 ucontext_t *uc = (ucontext_t*)ucVoid; 223 224 if (uc != NULL) { 225 epc = os::Solaris::ucontext_get_ExtendedPC(uc); 226 if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc); 227 } else { 228 // construct empty ExtendedPC for return value checking 229 epc = ExtendedPC(NULL); 230 if (ret_sp) *ret_sp = (intptr_t *)NULL; 231 } 232 233 return epc; 234} 235 236frame os::fetch_frame_from_context(void* ucVoid) { 237 intptr_t* sp; 238 intptr_t* fp; 239 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); 240 return frame(sp, frame::unpatchable, epc.pc()); 241} 242 243frame os::get_sender_for_C_frame(frame* fr) { 244 return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc()); 245} 246 247// Returns an estimate of the current stack pointer. Result must be guaranteed to 248// point into the calling threads stack, and be no lower than the current stack 249// pointer. 250address os::current_stack_pointer() { 251 volatile int dummy; 252 address sp = (address)&dummy + 8; // %%%% need to confirm if this is right 253 return sp; 254} 255 256frame os::current_frame() { 257 intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); 258 frame myframe(sp, frame::unpatchable, 259 CAST_FROM_FN_PTR(address, os::current_frame)); 260 if (os::is_first_C_frame(&myframe)) { 261 // stack is not walkable 262 return frame(NULL, NULL, NULL); 263 } else { 264 return os::get_sender_for_C_frame(&myframe); 265 } 266} 267 268 269void GetThreadPC_Callback::execute(OSThread::InterruptArguments *args) { 270 Thread* thread = args->thread(); 271 ucontext_t* uc = args->ucontext(); 272 intptr_t* sp; 273 274 assert(ProfileVM && thread->is_VM_thread(), "just checking"); 275 276 // Skip the mcontext corruption verification. If if occasionally 277 // things get corrupt, it is ok for profiling - we will just get an unresolved 278 // function name 279 ExtendedPC new_addr((address)uc->uc_mcontext.gregs[REG_PC]); 280 _addr = new_addr; 281} 282 283 284static int threadgetstate(thread_t tid, int *flags, lwpid_t *lwp, stack_t *ss, gregset_t rs, lwpstatus_t *lwpstatus) { 285 char lwpstatusfile[PROCFILE_LENGTH]; 286 int lwpfd, err; 287 288 if (err = os::Solaris::thr_getstate(tid, flags, lwp, ss, rs)) 289 return (err); 290 if (*flags == TRS_LWPID) { 291 sprintf(lwpstatusfile, "/proc/%d/lwp/%d/lwpstatus", getpid(), 292 *lwp); 293 if ((lwpfd = ::open(lwpstatusfile, O_RDONLY)) < 0) { 294 perror("thr_mutator_status: open lwpstatus"); 295 return (EINVAL); 296 } 297 if (pread(lwpfd, lwpstatus, sizeof (lwpstatus_t), (off_t)0) != 298 sizeof (lwpstatus_t)) { 299 perror("thr_mutator_status: read lwpstatus"); 300 (void) ::close(lwpfd); 301 return (EINVAL); 302 } 303 (void) ::close(lwpfd); 304 } 305 return (0); 306} 307 308 309bool os::is_allocatable(size_t bytes) { 310#ifdef _LP64 311 return true; 312#else 313 return (bytes <= (size_t)3835*M); 314#endif 315} 316 317extern "C" void Fetch32PFI () ; 318extern "C" void Fetch32Resume () ; 319extern "C" void FetchNPFI () ; 320extern "C" void FetchNResume () ; 321 322extern "C" JNIEXPORT int 323JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, 324 int abort_if_unrecognized) { 325 ucontext_t* uc = (ucontext_t*) ucVoid; 326 327 Thread* t = ThreadLocalStorage::get_thread_slow(); 328 329 SignalHandlerMark shm(t); 330 331 if(sig == SIGPIPE || sig == SIGXFSZ) { 332 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 333 return true; 334 } else { 335 if (PrintMiscellaneous && (WizardMode || Verbose)) { 336 char buf[64]; 337 warning("Ignoring %s - see 4229104 or 6499219", 338 os::exception_name(sig, buf, sizeof(buf))); 339 340 } 341 return true; 342 } 343 } 344 345 JavaThread* thread = NULL; 346 VMThread* vmthread = NULL; 347 if (os::Solaris::signal_handlers_are_installed) { 348 if (t != NULL ){ 349 if(t->is_Java_thread()) { 350 thread = (JavaThread*)t; 351 } 352 else if(t->is_VM_thread()){ 353 vmthread = (VMThread *)t; 354 } 355 } 356 } 357 358 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs"); 359 360 if (sig == os::Solaris::SIGasync()) { 361 if (thread) { 362 OSThread::InterruptArguments args(thread, uc); 363 thread->osthread()->do_interrupt_callbacks_at_interrupt(&args); 364 return true; 365 } else if (vmthread) { 366 OSThread::InterruptArguments args(vmthread, uc); 367 vmthread->osthread()->do_interrupt_callbacks_at_interrupt(&args); 368 return true; 369 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { 370 return true; 371 } else { 372 // If os::Solaris::SIGasync not chained, and this is a non-vm and 373 // non-java thread 374 return true; 375 } 376 } 377 378 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { 379 // can't decode this kind of signal 380 info = NULL; 381 } else { 382 assert(sig == info->si_signo, "bad siginfo"); 383 } 384 385 // decide if this trap can be handled by a stub 386 address stub = NULL; 387 388 address pc = NULL; 389 address npc = NULL; 390 391 //%note os_trap_1 392 if (info != NULL && uc != NULL && thread != NULL) { 393 // factor me: getPCfromContext 394 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 395 npc = (address) uc->uc_mcontext.gregs[REG_nPC]; 396 397 // SafeFetch() support 398 // Implemented with either a fixed set of addresses such 399 // as Fetch32*, or with Thread._OnTrap. 400 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) { 401 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ; 402 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ; 403 return true ; 404 } 405 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) { 406 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ; 407 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ; 408 return true ; 409 } 410 411 // Handle ALL stack overflow variations here 412 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { 413 address addr = (address) info->si_addr; 414 if (thread->in_stack_yellow_zone(addr)) { 415 thread->disable_stack_yellow_zone(); 416 // Sometimes the register windows are not properly flushed. 417 if(uc->uc_mcontext.gwins != NULL) { 418 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 419 } 420 if (thread->thread_state() == _thread_in_Java) { 421 // Throw a stack overflow exception. Guard pages will be reenabled 422 // while unwinding the stack. 423 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); 424 } else { 425 // Thread was in the vm or native code. Return and try to finish. 426 return true; 427 } 428 } else if (thread->in_stack_red_zone(addr)) { 429 // Fatal red zone violation. Disable the guard pages and fall through 430 // to handle_unexpected_exception way down below. 431 thread->disable_stack_red_zone(); 432 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); 433 // Sometimes the register windows are not properly flushed. 434 if(uc->uc_mcontext.gwins != NULL) { 435 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 436 } 437 } 438 } 439 440 441 if (thread->thread_state() == _thread_in_vm) { 442 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { 443 stub = StubRoutines::handler_for_unsafe_access(); 444 } 445 } 446 447 else if (thread->thread_state() == _thread_in_Java) { 448 // Java thread running in Java code => find exception handler if any 449 // a fault inside compiled code, the interpreter, or a stub 450 451 // Support Safepoint Polling 452 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { 453 stub = SharedRuntime::get_poll_stub(pc); 454 } 455 456 // Not needed on x86 solaris because verify_oops doesn't generate 457 // SEGV/BUS like sparc does. 458 if ( (sig == SIGSEGV || sig == SIGBUS) 459 && pc >= MacroAssembler::_verify_oop_implicit_branch[0] 460 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { 461 stub = MacroAssembler::_verify_oop_implicit_branch[2]; 462 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); 463 } 464 465 // This is not factored because on x86 solaris the patching for 466 // zombies does not generate a SEGV. 467 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { 468 // zombie method (ld [%g0],%o7 instruction) 469 stub = SharedRuntime::get_handle_wrong_method_stub(); 470 471 // At the stub it needs to look like a call from the caller of this 472 // method (not a call from the segv site). 473 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 474 } 475 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { 476 // BugId 4454115: A read from a MappedByteBuffer can fault 477 // here if the underlying file has been truncated. 478 // Do not crash the VM in such a case. 479 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 480 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; 481 if (nm != NULL && nm->has_unsafe_access()) { 482 stub = StubRoutines::handler_for_unsafe_access(); 483 } 484 } 485 486 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { 487 // integer divide by zero 488 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 489 } 490 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { 491 // floating-point divide by zero 492 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 493 } 494#ifdef COMPILER2 495 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { 496#ifdef ASSERT 497 #ifdef TIERED 498 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 499 assert(cb->is_compiled_by_c2(), "Wrong compiler"); 500 #endif // TIERED 501#endif // ASSERT 502 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. 503 stub = SharedRuntime::get_ic_miss_stub(); 504 // At the stub it needs to look like a call from the caller of this 505 // method (not a call from the segv site). 506 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 507 } 508#endif // COMPILER2 509 510 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { 511 // Determination of interpreter/vtable stub/compiled code null exception 512 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); 513 } 514 } 515 516 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in 517 // and the heap gets shrunk before the field access. 518 if ((sig == SIGSEGV) || (sig == SIGBUS)) { 519 address addr = JNI_FastGetField::find_slowcase_pc(pc); 520 if (addr != (address)-1) { 521 stub = addr; 522 } 523 } 524 525 // Check to see if we caught the safepoint code in the 526 // process of write protecting the memory serialization page. 527 // It write enables the page immediately after protecting it 528 // so just return. 529 if ((sig == SIGSEGV) && 530 os::is_memory_serialize_page(thread, (address)info->si_addr)) { 531 // Block current thread until the memory serialize page permission restored. 532 os::block_on_serialize_page_trap(); 533 return true; 534 } 535 } 536 537 if (stub != NULL) { 538 // save all thread context in case we need to restore it 539 540 thread->set_saved_exception_pc(pc); 541 thread->set_saved_exception_npc(npc); 542 543 // simulate a branch to the stub (a "call" in the safepoint stub case) 544 // factor me: setPC 545 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub; 546 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4); 547 548#ifndef PRODUCT 549 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); 550#endif /* PRODUCT */ 551 552 return true; 553 } 554 555 // signal-chaining 556 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 557 return true; 558 } 559 560 if (!abort_if_unrecognized) { 561 // caller wants another chance, so give it to him 562 return false; 563 } 564 565 if (!os::Solaris::libjsig_is_loaded) { 566 struct sigaction oldAct; 567 sigaction(sig, (struct sigaction *)0, &oldAct); 568 if (oldAct.sa_sigaction != signalHandler) { 569 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) 570 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); 571 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); 572 } 573 } 574 575 if (pc == NULL && uc != NULL) { 576 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 577 } 578 579 // Sometimes the register windows are not properly flushed. 580 if(uc->uc_mcontext.gwins != NULL) { 581 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 582 } 583 584 // unmask current signal 585 sigset_t newset; 586 sigemptyset(&newset); 587 sigaddset(&newset, sig); 588 sigprocmask(SIG_UNBLOCK, &newset, NULL); 589 590 // Determine which sort of error to throw. Out of swap may signal 591 // on the thread stack, which could get a mapping error when touched. 592 address addr = (address) info->si_addr; 593 if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) { 594 vm_exit_out_of_memory(0, "Out of swap space to map in thread stack."); 595 } 596 597 VMError err(t, sig, pc, info, ucVoid); 598 err.report_and_die(); 599 600 ShouldNotReachHere(); 601} 602 603void os::print_context(outputStream *st, void *context) { 604 if (context == NULL) return; 605 606 ucontext_t *uc = (ucontext_t*)context; 607 st->print_cr("Registers:"); 608 609 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT 610 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, 611 uc->uc_mcontext.gregs[REG_G1], 612 uc->uc_mcontext.gregs[REG_G2], 613 uc->uc_mcontext.gregs[REG_G3], 614 uc->uc_mcontext.gregs[REG_G4]); 615 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT 616 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, 617 uc->uc_mcontext.gregs[REG_G5], 618 uc->uc_mcontext.gregs[REG_G6], 619 uc->uc_mcontext.gregs[REG_G7], 620 uc->uc_mcontext.gregs[REG_Y]); 621 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT 622 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, 623 uc->uc_mcontext.gregs[REG_O0], 624 uc->uc_mcontext.gregs[REG_O1], 625 uc->uc_mcontext.gregs[REG_O2], 626 uc->uc_mcontext.gregs[REG_O3]); 627 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT 628 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, 629 uc->uc_mcontext.gregs[REG_O4], 630 uc->uc_mcontext.gregs[REG_O5], 631 uc->uc_mcontext.gregs[REG_O6], 632 uc->uc_mcontext.gregs[REG_O7]); 633 634 635 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 636 st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT 637 " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT, 638 sp[L0->sp_offset_in_saved_window()], 639 sp[L1->sp_offset_in_saved_window()], 640 sp[L2->sp_offset_in_saved_window()], 641 sp[L3->sp_offset_in_saved_window()]); 642 st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT 643 " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT, 644 sp[L4->sp_offset_in_saved_window()], 645 sp[L5->sp_offset_in_saved_window()], 646 sp[L6->sp_offset_in_saved_window()], 647 sp[L7->sp_offset_in_saved_window()]); 648 st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT 649 " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT, 650 sp[I0->sp_offset_in_saved_window()], 651 sp[I1->sp_offset_in_saved_window()], 652 sp[I2->sp_offset_in_saved_window()], 653 sp[I3->sp_offset_in_saved_window()]); 654 st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT 655 " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT, 656 sp[I4->sp_offset_in_saved_window()], 657 sp[I5->sp_offset_in_saved_window()], 658 sp[I6->sp_offset_in_saved_window()], 659 sp[I7->sp_offset_in_saved_window()]); 660 661 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, 662 uc->uc_mcontext.gregs[REG_PC], 663 uc->uc_mcontext.gregs[REG_nPC]); 664 st->cr(); 665 st->cr(); 666 667 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); 668 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); 669 st->cr(); 670 671 // Note: it may be unsafe to inspect memory near pc. For example, pc may 672 // point to garbage if entry point in an nmethod is corrupted. Leave 673 // this at the end, and hope for the best. 674 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); 675 address pc = epc.pc(); 676 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); 677 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); 678} 679 680void os::print_register_info(outputStream *st, void *context) { 681 if (context == NULL) return; 682 683 ucontext_t *uc = (ucontext_t*)context; 684 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 685 686 st->print_cr("Register to memory mapping:"); 687 st->cr(); 688 689 // this is only for the "general purpose" registers 690 st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]); 691 st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]); 692 st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]); 693 st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]); 694 st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]); 695 st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]); 696 st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]); 697 st->cr(); 698 699 st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]); 700 st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]); 701 st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]); 702 st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]); 703 st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]); 704 st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]); 705 st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]); 706 st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]); 707 st->cr(); 708 709 st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]); 710 st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]); 711 st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]); 712 st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]); 713 st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]); 714 st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]); 715 st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]); 716 st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]); 717 st->cr(); 718 719 st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]); 720 st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]); 721 st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]); 722 st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]); 723 st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]); 724 st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]); 725 st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]); 726 st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]); 727 st->cr(); 728} 729 730void os::Solaris::init_thread_fpu_state(void) { 731 // Nothing needed on Sparc. 732} 733 734#if !defined(COMPILER2) && !defined(_LP64) 735 736// These routines are the initial value of atomic_xchg_entry(), 737// atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() 738// until initialization is complete. 739// TODO - remove when the VM drops support for V8. 740 741typedef jint xchg_func_t (jint, volatile jint*); 742typedef jint cmpxchg_func_t (jint, volatile jint*, jint); 743typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); 744typedef jint add_func_t (jint, volatile jint*); 745 746jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { 747 // try to use the stub: 748 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); 749 750 if (func != NULL) { 751 os::atomic_xchg_func = func; 752 return (*func)(exchange_value, dest); 753 } 754 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 755 756 jint old_value = *dest; 757 *dest = exchange_value; 758 return old_value; 759} 760 761jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { 762 // try to use the stub: 763 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); 764 765 if (func != NULL) { 766 os::atomic_cmpxchg_func = func; 767 return (*func)(exchange_value, dest, compare_value); 768 } 769 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 770 771 jint old_value = *dest; 772 if (old_value == compare_value) 773 *dest = exchange_value; 774 return old_value; 775} 776 777jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { 778 // try to use the stub: 779 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); 780 781 if (func != NULL) { 782 os::atomic_cmpxchg_long_func = func; 783 return (*func)(exchange_value, dest, compare_value); 784 } 785 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 786 787 jlong old_value = *dest; 788 if (old_value == compare_value) 789 *dest = exchange_value; 790 return old_value; 791} 792 793jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { 794 // try to use the stub: 795 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); 796 797 if (func != NULL) { 798 os::atomic_add_func = func; 799 return (*func)(add_value, dest); 800 } 801 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 802 803 return (*dest) += add_value; 804} 805 806xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; 807cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; 808cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; 809add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; 810 811#endif // !_LP64 && !COMPILER2 812 813#if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) 814 // See file build/solaris/makefiles/$compiler.make 815 // For compiler1 the architecture is v8 and frps isn't present in v8 816 extern "C" void _mark_fpu_nosave() { 817 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); 818 } 819#endif //defined(__sparc) && defined(COMPILER2) 820 821#ifndef PRODUCT 822void os::verify_stack_alignment() { 823} 824#endif 825