1 /* 2 * Copyright (c) 1999, 2013, 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 "asm/macroAssembler.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/thread.inline.hpp" 52 #include "runtime/timer.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 87 size_t os::Solaris::min_stack_allowed = 128*K; 88 #else 89 size_t os::Solaris::min_stack_allowed = 96*K; 90 #endif 91 92 int 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 98 static 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 } 108 109 char* 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 // 122 bool 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. 149 ucontext_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 180 ExtendedPC 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 187 intptr_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 192 intptr_t* os::Solaris::ucontext_get_fp(ucontext_t *uc) { 193 ShouldNotReachHere(); 194 return NULL; 195 } 196 197 address os::Solaris::ucontext_get_pc(ucontext_t *uc) { 198 return (address) uc->uc_mcontext.gregs[REG_PC]; 199 } 200 201 202 // For Forte Analyzer AsyncGetCallTrace profiling support - thread 203 // is currently interrupted by SIGPROF. 204 // 205 // ret_fp parameter is only used by Solaris X86. 206 // 207 // The difference between this and os::fetch_frame_from_context() is that 208 // here we try to skip nested signal frames. 209 ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread, 210 ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) { 211 212 assert(thread != NULL, "just checking"); 213 assert(ret_sp != NULL, "just checking"); 214 assert(ret_fp == NULL, "just checking"); 215 216 ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc); 217 218 return os::fetch_frame_from_context(luc, ret_sp, ret_fp); 219 } 220 221 222 // ret_fp parameter is only used by Solaris X86. 223 ExtendedPC os::fetch_frame_from_context(void* ucVoid, 224 intptr_t** ret_sp, intptr_t** ret_fp) { 225 226 ExtendedPC epc; 227 ucontext_t *uc = (ucontext_t*)ucVoid; 228 229 if (uc != NULL) { 230 epc = os::Solaris::ucontext_get_ExtendedPC(uc); 231 if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc); 232 } else { 233 // construct empty ExtendedPC for return value checking 234 epc = ExtendedPC(NULL); 235 if (ret_sp) *ret_sp = (intptr_t *)NULL; 236 } 237 238 return epc; 239 } 240 241 frame os::fetch_frame_from_context(void* ucVoid) { 242 intptr_t* sp; 243 intptr_t* fp; 244 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); 245 return frame(sp, frame::unpatchable, epc.pc()); 246 } 247 248 frame os::get_sender_for_C_frame(frame* fr) { 249 return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc()); 250 } 251 252 // Returns an estimate of the current stack pointer. Result must be guaranteed to 253 // point into the calling threads stack, and be no lower than the current stack 254 // pointer. 255 address os::current_stack_pointer() { 256 volatile int dummy; 257 address sp = (address)&dummy + 8; // %%%% need to confirm if this is right 258 return sp; 259 } 260 261 frame os::current_frame() { 262 intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); 263 frame myframe(sp, frame::unpatchable, 264 CAST_FROM_FN_PTR(address, os::current_frame)); 265 if (os::is_first_C_frame(&myframe)) { 266 // stack is not walkable 267 return frame(NULL, NULL, NULL); 268 } else { 269 return os::get_sender_for_C_frame(&myframe); 270 } 271 } 272 273 static int threadgetstate(thread_t tid, int *flags, lwpid_t *lwp, stack_t *ss, gregset_t rs, lwpstatus_t *lwpstatus) { 274 char lwpstatusfile[PROCFILE_LENGTH]; 275 int lwpfd, err; 276 277 if (err = os::Solaris::thr_getstate(tid, flags, lwp, ss, rs)) 278 return (err); 279 if (*flags == TRS_LWPID) { 280 sprintf(lwpstatusfile, "/proc/%d/lwp/%d/lwpstatus", getpid(), 281 *lwp); 282 if ((lwpfd = ::open(lwpstatusfile, O_RDONLY)) < 0) { 283 perror("thr_mutator_status: open lwpstatus"); 284 return (EINVAL); 285 } 286 if (pread(lwpfd, lwpstatus, sizeof (lwpstatus_t), (off_t)0) != 287 sizeof (lwpstatus_t)) { 288 perror("thr_mutator_status: read lwpstatus"); 289 (void) ::close(lwpfd); 290 return (EINVAL); 291 } 292 (void) ::close(lwpfd); 293 } 294 return (0); 295 } 296 297 298 bool os::is_allocatable(size_t bytes) { 299 #ifdef _LP64 300 return true; 301 #else 302 return (bytes <= (size_t)3835*M); 303 #endif 304 } 305 306 extern "C" void Fetch32PFI () ; 307 extern "C" void Fetch32Resume () ; 308 extern "C" void FetchNPFI () ; 309 extern "C" void FetchNResume () ; 310 311 extern "C" JNIEXPORT int 312 JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, 313 int abort_if_unrecognized) { 314 ucontext_t* uc = (ucontext_t*) ucVoid; 315 316 Thread* t = ThreadLocalStorage::get_thread_slow(); 317 318 SignalHandlerMark shm(t); 319 320 if(sig == SIGPIPE || sig == SIGXFSZ) { 321 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 322 return true; 323 } else { 324 if (PrintMiscellaneous && (WizardMode || Verbose)) { 325 char buf[64]; 326 warning("Ignoring %s - see 4229104 or 6499219", 327 os::exception_name(sig, buf, sizeof(buf))); 328 329 } 330 return true; 331 } 332 } 333 334 JavaThread* thread = NULL; 335 VMThread* vmthread = NULL; 336 if (os::Solaris::signal_handlers_are_installed) { 337 if (t != NULL ){ 338 if(t->is_Java_thread()) { 339 thread = (JavaThread*)t; 340 } 341 else if(t->is_VM_thread()){ 342 vmthread = (VMThread *)t; 343 } 344 } 345 } 346 347 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs"); 348 349 if (sig == os::Solaris::SIGasync()) { 350 if (thread || vmthread) { 351 OSThread::SR_handler(t, uc); 352 return true; 353 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { 354 return true; 355 } else { 356 // If os::Solaris::SIGasync not chained, and this is a non-vm and 357 // non-java thread 358 return true; 359 } 360 } 361 362 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { 363 // can't decode this kind of signal 364 info = NULL; 365 } else { 366 assert(sig == info->si_signo, "bad siginfo"); 367 } 368 369 // decide if this trap can be handled by a stub 370 address stub = NULL; 371 372 address pc = NULL; 373 address npc = NULL; 374 375 //%note os_trap_1 376 if (info != NULL && uc != NULL && thread != NULL) { 377 // factor me: getPCfromContext 378 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 379 npc = (address) uc->uc_mcontext.gregs[REG_nPC]; 380 381 // SafeFetch() support 382 // Implemented with either a fixed set of addresses such 383 // as Fetch32*, or with Thread._OnTrap. 384 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) { 385 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ; 386 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ; 387 return true ; 388 } 389 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) { 390 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ; 391 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ; 392 return true ; 393 } 394 395 // Handle ALL stack overflow variations here 396 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { 397 address addr = (address) info->si_addr; 398 if (thread->in_stack_yellow_zone(addr)) { 399 thread->disable_stack_yellow_zone(); 400 // Sometimes the register windows are not properly flushed. 401 if(uc->uc_mcontext.gwins != NULL) { 402 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 403 } 404 if (thread->thread_state() == _thread_in_Java) { 405 // Throw a stack overflow exception. Guard pages will be reenabled 406 // while unwinding the stack. 407 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); 408 } else { 409 // Thread was in the vm or native code. Return and try to finish. 410 return true; 411 } 412 } else if (thread->in_stack_red_zone(addr)) { 413 // Fatal red zone violation. Disable the guard pages and fall through 414 // to handle_unexpected_exception way down below. 415 thread->disable_stack_red_zone(); 416 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); 417 // Sometimes the register windows are not properly flushed. 418 if(uc->uc_mcontext.gwins != NULL) { 419 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 420 } 421 } 422 } 423 424 425 if (thread->thread_state() == _thread_in_vm) { 426 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { 427 stub = StubRoutines::handler_for_unsafe_access(); 428 } 429 } 430 431 else if (thread->thread_state() == _thread_in_Java) { 432 // Java thread running in Java code => find exception handler if any 433 // a fault inside compiled code, the interpreter, or a stub 434 435 // Support Safepoint Polling 436 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { 437 stub = SharedRuntime::get_poll_stub(pc); 438 } 439 440 // Not needed on x86 solaris because verify_oops doesn't generate 441 // SEGV/BUS like sparc does. 442 if ( (sig == SIGSEGV || sig == SIGBUS) 443 && pc >= MacroAssembler::_verify_oop_implicit_branch[0] 444 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { 445 stub = MacroAssembler::_verify_oop_implicit_branch[2]; 446 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); 447 } 448 449 // This is not factored because on x86 solaris the patching for 450 // zombies does not generate a SEGV. 451 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { 452 // zombie method (ld [%g0],%o7 instruction) 453 stub = SharedRuntime::get_handle_wrong_method_stub(); 454 455 // At the stub it needs to look like a call from the caller of this 456 // method (not a call from the segv site). 457 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 458 } 459 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { 460 // BugId 4454115: A read from a MappedByteBuffer can fault 461 // here if the underlying file has been truncated. 462 // Do not crash the VM in such a case. 463 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 464 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; 465 if (nm != NULL && nm->has_unsafe_access()) { 466 stub = StubRoutines::handler_for_unsafe_access(); 467 } 468 } 469 470 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { 471 // integer divide by zero 472 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 473 } 474 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { 475 // floating-point divide by zero 476 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 477 } 478 #ifdef COMPILER2 479 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { 480 #ifdef ASSERT 481 #ifdef TIERED 482 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 483 assert(cb->is_compiled_by_c2(), "Wrong compiler"); 484 #endif // TIERED 485 #endif // ASSERT 486 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. 487 stub = SharedRuntime::get_ic_miss_stub(); 488 // At the stub it needs to look like a call from the caller of this 489 // method (not a call from the segv site). 490 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 491 } 492 #endif // COMPILER2 493 494 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { 495 // Determination of interpreter/vtable stub/compiled code null exception 496 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); 497 } 498 } 499 500 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in 501 // and the heap gets shrunk before the field access. 502 if ((sig == SIGSEGV) || (sig == SIGBUS)) { 503 address addr = JNI_FastGetField::find_slowcase_pc(pc); 504 if (addr != (address)-1) { 505 stub = addr; 506 } 507 } 508 509 // Check to see if we caught the safepoint code in the 510 // process of write protecting the memory serialization page. 511 // It write enables the page immediately after protecting it 512 // so just return. 513 if ((sig == SIGSEGV) && 514 os::is_memory_serialize_page(thread, (address)info->si_addr)) { 515 // Block current thread until the memory serialize page permission restored. 516 os::block_on_serialize_page_trap(); 517 return true; 518 } 519 } 520 521 if (stub != NULL) { 522 // save all thread context in case we need to restore it 523 524 thread->set_saved_exception_pc(pc); 525 thread->set_saved_exception_npc(npc); 526 527 // simulate a branch to the stub (a "call" in the safepoint stub case) 528 // factor me: setPC 529 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub; 530 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4); 531 532 #ifndef PRODUCT 533 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); 534 #endif /* PRODUCT */ 535 536 return true; 537 } 538 539 // signal-chaining 540 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 541 return true; 542 } 543 544 if (!abort_if_unrecognized) { 545 // caller wants another chance, so give it to him 546 return false; 547 } 548 549 if (!os::Solaris::libjsig_is_loaded) { 550 struct sigaction oldAct; 551 sigaction(sig, (struct sigaction *)0, &oldAct); 552 if (oldAct.sa_sigaction != signalHandler) { 553 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) 554 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); 555 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); 556 } 557 } 558 559 if (pc == NULL && uc != NULL) { 560 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 561 } 562 563 // Sometimes the register windows are not properly flushed. 564 if(uc->uc_mcontext.gwins != NULL) { 565 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 566 } 567 568 // unmask current signal 569 sigset_t newset; 570 sigemptyset(&newset); 571 sigaddset(&newset, sig); 572 sigprocmask(SIG_UNBLOCK, &newset, NULL); 573 574 // Determine which sort of error to throw. Out of swap may signal 575 // on the thread stack, which could get a mapping error when touched. 576 address addr = (address) info->si_addr; 577 if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) { 578 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "Out of swap space to map in thread stack."); 579 } 580 581 VMError err(t, sig, pc, info, ucVoid); 582 err.report_and_die(); 583 584 ShouldNotReachHere(); 585 } 586 587 void os::print_context(outputStream *st, void *context) { 588 if (context == NULL) return; 589 590 ucontext_t *uc = (ucontext_t*)context; 591 st->print_cr("Registers:"); 592 593 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT 594 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, 595 uc->uc_mcontext.gregs[REG_G1], 596 uc->uc_mcontext.gregs[REG_G2], 597 uc->uc_mcontext.gregs[REG_G3], 598 uc->uc_mcontext.gregs[REG_G4]); 599 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT 600 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, 601 uc->uc_mcontext.gregs[REG_G5], 602 uc->uc_mcontext.gregs[REG_G6], 603 uc->uc_mcontext.gregs[REG_G7], 604 uc->uc_mcontext.gregs[REG_Y]); 605 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT 606 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, 607 uc->uc_mcontext.gregs[REG_O0], 608 uc->uc_mcontext.gregs[REG_O1], 609 uc->uc_mcontext.gregs[REG_O2], 610 uc->uc_mcontext.gregs[REG_O3]); 611 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT 612 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, 613 uc->uc_mcontext.gregs[REG_O4], 614 uc->uc_mcontext.gregs[REG_O5], 615 uc->uc_mcontext.gregs[REG_O6], 616 uc->uc_mcontext.gregs[REG_O7]); 617 618 619 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 620 st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT 621 " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT, 622 sp[L0->sp_offset_in_saved_window()], 623 sp[L1->sp_offset_in_saved_window()], 624 sp[L2->sp_offset_in_saved_window()], 625 sp[L3->sp_offset_in_saved_window()]); 626 st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT 627 " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT, 628 sp[L4->sp_offset_in_saved_window()], 629 sp[L5->sp_offset_in_saved_window()], 630 sp[L6->sp_offset_in_saved_window()], 631 sp[L7->sp_offset_in_saved_window()]); 632 st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT 633 " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT, 634 sp[I0->sp_offset_in_saved_window()], 635 sp[I1->sp_offset_in_saved_window()], 636 sp[I2->sp_offset_in_saved_window()], 637 sp[I3->sp_offset_in_saved_window()]); 638 st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT 639 " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT, 640 sp[I4->sp_offset_in_saved_window()], 641 sp[I5->sp_offset_in_saved_window()], 642 sp[I6->sp_offset_in_saved_window()], 643 sp[I7->sp_offset_in_saved_window()]); 644 645 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, 646 uc->uc_mcontext.gregs[REG_PC], 647 uc->uc_mcontext.gregs[REG_nPC]); 648 st->cr(); 649 st->cr(); 650 651 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); 652 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); 653 st->cr(); 654 655 // Note: it may be unsafe to inspect memory near pc. For example, pc may 656 // point to garbage if entry point in an nmethod is corrupted. Leave 657 // this at the end, and hope for the best. 658 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); 659 address pc = epc.pc(); 660 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); 661 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); 662 } 663 664 void os::print_register_info(outputStream *st, void *context) { 665 if (context == NULL) return; 666 667 ucontext_t *uc = (ucontext_t*)context; 668 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 669 670 st->print_cr("Register to memory mapping:"); 671 st->cr(); 672 673 // this is only for the "general purpose" registers 674 st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]); 675 st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]); 676 st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]); 677 st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]); 678 st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]); 679 st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]); 680 st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]); 681 st->cr(); 682 683 st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]); 684 st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]); 685 st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]); 686 st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]); 687 st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]); 688 st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]); 689 st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]); 690 st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]); 691 st->cr(); 692 693 st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]); 694 st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]); 695 st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]); 696 st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]); 697 st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]); 698 st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]); 699 st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]); 700 st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]); 701 st->cr(); 702 703 st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]); 704 st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]); 705 st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]); 706 st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]); 707 st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]); 708 st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]); 709 st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]); 710 st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]); 711 st->cr(); 712 } 713 714 void os::Solaris::init_thread_fpu_state(void) { 715 // Nothing needed on Sparc. 716 } 717 718 #if !defined(COMPILER2) && !defined(_LP64) 719 720 // These routines are the initial value of atomic_xchg_entry(), 721 // atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() 722 // until initialization is complete. 723 // TODO - remove when the VM drops support for V8. 724 725 typedef jint xchg_func_t (jint, volatile jint*); 726 typedef jint cmpxchg_func_t (jint, volatile jint*, jint); 727 typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); 728 typedef jint add_func_t (jint, volatile jint*); 729 730 jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { 731 // try to use the stub: 732 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); 733 734 if (func != NULL) { 735 os::atomic_xchg_func = func; 736 return (*func)(exchange_value, dest); 737 } 738 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 739 740 jint old_value = *dest; 741 *dest = exchange_value; 742 return old_value; 743 } 744 745 jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { 746 // try to use the stub: 747 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); 748 749 if (func != NULL) { 750 os::atomic_cmpxchg_func = func; 751 return (*func)(exchange_value, dest, compare_value); 752 } 753 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 754 755 jint old_value = *dest; 756 if (old_value == compare_value) 757 *dest = exchange_value; 758 return old_value; 759 } 760 761 jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { 762 // try to use the stub: 763 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); 764 765 if (func != NULL) { 766 os::atomic_cmpxchg_long_func = func; 767 return (*func)(exchange_value, dest, compare_value); 768 } 769 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 770 771 jlong old_value = *dest; 772 if (old_value == compare_value) 773 *dest = exchange_value; 774 return old_value; 775 } 776 777 jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { 778 // try to use the stub: 779 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); 780 781 if (func != NULL) { 782 os::atomic_add_func = func; 783 return (*func)(add_value, dest); 784 } 785 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 786 787 return (*dest) += add_value; 788 } 789 790 xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; 791 cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; 792 cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; 793 add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; 794 795 #endif // !_LP64 && !COMPILER2 796 797 #if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) 798 // See file build/solaris/makefiles/$compiler.make 799 // For compiler1 the architecture is v8 and frps isn't present in v8 800 extern "C" void _mark_fpu_nosave() { 801 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); 802 } 803 #endif //defined(__sparc) && defined(COMPILER2) 804 805 #ifndef PRODUCT 806 void os::verify_stack_alignment() { 807 } 808 #endif