os_solaris_sparc.cpp revision 4989:5e3b6f79d280
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 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 197address 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. 209ExtendedPC 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. 223ExtendedPC 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 241frame 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 248frame 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. 255address 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 261frame 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 273static 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 298bool 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 306extern "C" void Fetch32PFI () ; 307extern "C" void Fetch32Resume () ; 308extern "C" void FetchNPFI () ; 309extern "C" void FetchNResume () ; 310 311extern "C" JNIEXPORT int 312JVM_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 // Must do this before SignalHandlerMark, if crash protection installed we will longjmp away 319 // (no destructors can be run) 320 os::WatcherThreadCrashProtection::check_crash_protection(sig, t); 321 322 SignalHandlerMark shm(t); 323 324 if(sig == SIGPIPE || sig == SIGXFSZ) { 325 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 326 return true; 327 } else { 328 if (PrintMiscellaneous && (WizardMode || Verbose)) { 329 char buf[64]; 330 warning("Ignoring %s - see 4229104 or 6499219", 331 os::exception_name(sig, buf, sizeof(buf))); 332 333 } 334 return true; 335 } 336 } 337 338 JavaThread* thread = NULL; 339 VMThread* vmthread = NULL; 340 if (os::Solaris::signal_handlers_are_installed) { 341 if (t != NULL ){ 342 if(t->is_Java_thread()) { 343 thread = (JavaThread*)t; 344 } 345 else if(t->is_VM_thread()){ 346 vmthread = (VMThread *)t; 347 } 348 } 349 } 350 351 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs"); 352 353 if (sig == os::Solaris::SIGasync()) { 354 if (thread || vmthread) { 355 OSThread::SR_handler(t, uc); 356 return true; 357 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { 358 return true; 359 } else { 360 // If os::Solaris::SIGasync not chained, and this is a non-vm and 361 // non-java thread 362 return true; 363 } 364 } 365 366 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { 367 // can't decode this kind of signal 368 info = NULL; 369 } else { 370 assert(sig == info->si_signo, "bad siginfo"); 371 } 372 373 // decide if this trap can be handled by a stub 374 address stub = NULL; 375 376 address pc = NULL; 377 address npc = NULL; 378 379 //%note os_trap_1 380 if (info != NULL && uc != NULL && thread != NULL) { 381 // factor me: getPCfromContext 382 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 383 npc = (address) uc->uc_mcontext.gregs[REG_nPC]; 384 385 // SafeFetch() support 386 // Implemented with either a fixed set of addresses such 387 // as Fetch32*, or with Thread._OnTrap. 388 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) { 389 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ; 390 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ; 391 return true ; 392 } 393 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) { 394 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ; 395 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ; 396 return true ; 397 } 398 399 // Handle ALL stack overflow variations here 400 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { 401 address addr = (address) info->si_addr; 402 if (thread->in_stack_yellow_zone(addr)) { 403 thread->disable_stack_yellow_zone(); 404 // Sometimes the register windows are not properly flushed. 405 if(uc->uc_mcontext.gwins != NULL) { 406 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 407 } 408 if (thread->thread_state() == _thread_in_Java) { 409 // Throw a stack overflow exception. Guard pages will be reenabled 410 // while unwinding the stack. 411 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); 412 } else { 413 // Thread was in the vm or native code. Return and try to finish. 414 return true; 415 } 416 } else if (thread->in_stack_red_zone(addr)) { 417 // Fatal red zone violation. Disable the guard pages and fall through 418 // to handle_unexpected_exception way down below. 419 thread->disable_stack_red_zone(); 420 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); 421 // Sometimes the register windows are not properly flushed. 422 if(uc->uc_mcontext.gwins != NULL) { 423 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 424 } 425 } 426 } 427 428 429 if (thread->thread_state() == _thread_in_vm) { 430 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { 431 stub = StubRoutines::handler_for_unsafe_access(); 432 } 433 } 434 435 else if (thread->thread_state() == _thread_in_Java) { 436 // Java thread running in Java code => find exception handler if any 437 // a fault inside compiled code, the interpreter, or a stub 438 439 // Support Safepoint Polling 440 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { 441 stub = SharedRuntime::get_poll_stub(pc); 442 } 443 444 // Not needed on x86 solaris because verify_oops doesn't generate 445 // SEGV/BUS like sparc does. 446 if ( (sig == SIGSEGV || sig == SIGBUS) 447 && pc >= MacroAssembler::_verify_oop_implicit_branch[0] 448 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { 449 stub = MacroAssembler::_verify_oop_implicit_branch[2]; 450 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); 451 } 452 453 // This is not factored because on x86 solaris the patching for 454 // zombies does not generate a SEGV. 455 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { 456 // zombie method (ld [%g0],%o7 instruction) 457 stub = SharedRuntime::get_handle_wrong_method_stub(); 458 459 // At the stub it needs to look like a call from the caller of this 460 // method (not a call from the segv site). 461 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 462 } 463 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { 464 // BugId 4454115: A read from a MappedByteBuffer can fault 465 // here if the underlying file has been truncated. 466 // Do not crash the VM in such a case. 467 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 468 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; 469 if (nm != NULL && nm->has_unsafe_access()) { 470 stub = StubRoutines::handler_for_unsafe_access(); 471 } 472 } 473 474 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { 475 // integer divide by zero 476 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 477 } 478 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { 479 // floating-point divide by zero 480 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 481 } 482#ifdef COMPILER2 483 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { 484#ifdef ASSERT 485 #ifdef TIERED 486 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 487 assert(cb->is_compiled_by_c2(), "Wrong compiler"); 488 #endif // TIERED 489#endif // ASSERT 490 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. 491 stub = SharedRuntime::get_ic_miss_stub(); 492 // At the stub it needs to look like a call from the caller of this 493 // method (not a call from the segv site). 494 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 495 } 496#endif // COMPILER2 497 498 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { 499 // Determination of interpreter/vtable stub/compiled code null exception 500 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); 501 } 502 } 503 504 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in 505 // and the heap gets shrunk before the field access. 506 if ((sig == SIGSEGV) || (sig == SIGBUS)) { 507 address addr = JNI_FastGetField::find_slowcase_pc(pc); 508 if (addr != (address)-1) { 509 stub = addr; 510 } 511 } 512 513 // Check to see if we caught the safepoint code in the 514 // process of write protecting the memory serialization page. 515 // It write enables the page immediately after protecting it 516 // so just return. 517 if ((sig == SIGSEGV) && 518 os::is_memory_serialize_page(thread, (address)info->si_addr)) { 519 // Block current thread until the memory serialize page permission restored. 520 os::block_on_serialize_page_trap(); 521 return true; 522 } 523 } 524 525 if (stub != NULL) { 526 // save all thread context in case we need to restore it 527 528 thread->set_saved_exception_pc(pc); 529 thread->set_saved_exception_npc(npc); 530 531 // simulate a branch to the stub (a "call" in the safepoint stub case) 532 // factor me: setPC 533 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub; 534 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4); 535 536#ifndef PRODUCT 537 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); 538#endif /* PRODUCT */ 539 540 return true; 541 } 542 543 // signal-chaining 544 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 545 return true; 546 } 547 548 if (!abort_if_unrecognized) { 549 // caller wants another chance, so give it to him 550 return false; 551 } 552 553 if (!os::Solaris::libjsig_is_loaded) { 554 struct sigaction oldAct; 555 sigaction(sig, (struct sigaction *)0, &oldAct); 556 if (oldAct.sa_sigaction != signalHandler) { 557 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) 558 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); 559 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); 560 } 561 } 562 563 if (pc == NULL && uc != NULL) { 564 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 565 } 566 567 // Sometimes the register windows are not properly flushed. 568 if(uc->uc_mcontext.gwins != NULL) { 569 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 570 } 571 572 // unmask current signal 573 sigset_t newset; 574 sigemptyset(&newset); 575 sigaddset(&newset, sig); 576 sigprocmask(SIG_UNBLOCK, &newset, NULL); 577 578 // Determine which sort of error to throw. Out of swap may signal 579 // on the thread stack, which could get a mapping error when touched. 580 address addr = (address) info->si_addr; 581 if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) { 582 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "Out of swap space to map in thread stack."); 583 } 584 585 VMError err(t, sig, pc, info, ucVoid); 586 err.report_and_die(); 587 588 ShouldNotReachHere(); 589} 590 591void os::print_context(outputStream *st, void *context) { 592 if (context == NULL) return; 593 594 ucontext_t *uc = (ucontext_t*)context; 595 st->print_cr("Registers:"); 596 597 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT 598 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, 599 uc->uc_mcontext.gregs[REG_G1], 600 uc->uc_mcontext.gregs[REG_G2], 601 uc->uc_mcontext.gregs[REG_G3], 602 uc->uc_mcontext.gregs[REG_G4]); 603 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT 604 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, 605 uc->uc_mcontext.gregs[REG_G5], 606 uc->uc_mcontext.gregs[REG_G6], 607 uc->uc_mcontext.gregs[REG_G7], 608 uc->uc_mcontext.gregs[REG_Y]); 609 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT 610 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, 611 uc->uc_mcontext.gregs[REG_O0], 612 uc->uc_mcontext.gregs[REG_O1], 613 uc->uc_mcontext.gregs[REG_O2], 614 uc->uc_mcontext.gregs[REG_O3]); 615 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT 616 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, 617 uc->uc_mcontext.gregs[REG_O4], 618 uc->uc_mcontext.gregs[REG_O5], 619 uc->uc_mcontext.gregs[REG_O6], 620 uc->uc_mcontext.gregs[REG_O7]); 621 622 623 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 624 st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT 625 " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT, 626 sp[L0->sp_offset_in_saved_window()], 627 sp[L1->sp_offset_in_saved_window()], 628 sp[L2->sp_offset_in_saved_window()], 629 sp[L3->sp_offset_in_saved_window()]); 630 st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT 631 " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT, 632 sp[L4->sp_offset_in_saved_window()], 633 sp[L5->sp_offset_in_saved_window()], 634 sp[L6->sp_offset_in_saved_window()], 635 sp[L7->sp_offset_in_saved_window()]); 636 st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT 637 " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT, 638 sp[I0->sp_offset_in_saved_window()], 639 sp[I1->sp_offset_in_saved_window()], 640 sp[I2->sp_offset_in_saved_window()], 641 sp[I3->sp_offset_in_saved_window()]); 642 st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT 643 " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT, 644 sp[I4->sp_offset_in_saved_window()], 645 sp[I5->sp_offset_in_saved_window()], 646 sp[I6->sp_offset_in_saved_window()], 647 sp[I7->sp_offset_in_saved_window()]); 648 649 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, 650 uc->uc_mcontext.gregs[REG_PC], 651 uc->uc_mcontext.gregs[REG_nPC]); 652 st->cr(); 653 st->cr(); 654 655 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); 656 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); 657 st->cr(); 658 659 // Note: it may be unsafe to inspect memory near pc. For example, pc may 660 // point to garbage if entry point in an nmethod is corrupted. Leave 661 // this at the end, and hope for the best. 662 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); 663 address pc = epc.pc(); 664 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); 665 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); 666} 667 668void os::print_register_info(outputStream *st, void *context) { 669 if (context == NULL) return; 670 671 ucontext_t *uc = (ucontext_t*)context; 672 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 673 674 st->print_cr("Register to memory mapping:"); 675 st->cr(); 676 677 // this is only for the "general purpose" registers 678 st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]); 679 st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]); 680 st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]); 681 st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]); 682 st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]); 683 st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]); 684 st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]); 685 st->cr(); 686 687 st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]); 688 st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]); 689 st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]); 690 st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]); 691 st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]); 692 st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]); 693 st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]); 694 st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]); 695 st->cr(); 696 697 st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]); 698 st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]); 699 st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]); 700 st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]); 701 st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]); 702 st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]); 703 st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]); 704 st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]); 705 st->cr(); 706 707 st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]); 708 st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]); 709 st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]); 710 st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]); 711 st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]); 712 st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]); 713 st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]); 714 st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]); 715 st->cr(); 716} 717 718void os::Solaris::init_thread_fpu_state(void) { 719 // Nothing needed on Sparc. 720} 721 722#if !defined(COMPILER2) && !defined(_LP64) 723 724// These routines are the initial value of atomic_xchg_entry(), 725// atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() 726// until initialization is complete. 727// TODO - remove when the VM drops support for V8. 728 729typedef jint xchg_func_t (jint, volatile jint*); 730typedef jint cmpxchg_func_t (jint, volatile jint*, jint); 731typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); 732typedef jint add_func_t (jint, volatile jint*); 733 734jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { 735 // try to use the stub: 736 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); 737 738 if (func != NULL) { 739 os::atomic_xchg_func = func; 740 return (*func)(exchange_value, dest); 741 } 742 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 743 744 jint old_value = *dest; 745 *dest = exchange_value; 746 return old_value; 747} 748 749jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { 750 // try to use the stub: 751 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); 752 753 if (func != NULL) { 754 os::atomic_cmpxchg_func = func; 755 return (*func)(exchange_value, dest, compare_value); 756 } 757 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 758 759 jint old_value = *dest; 760 if (old_value == compare_value) 761 *dest = exchange_value; 762 return old_value; 763} 764 765jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { 766 // try to use the stub: 767 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); 768 769 if (func != NULL) { 770 os::atomic_cmpxchg_long_func = func; 771 return (*func)(exchange_value, dest, compare_value); 772 } 773 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 774 775 jlong old_value = *dest; 776 if (old_value == compare_value) 777 *dest = exchange_value; 778 return old_value; 779} 780 781jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { 782 // try to use the stub: 783 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); 784 785 if (func != NULL) { 786 os::atomic_add_func = func; 787 return (*func)(add_value, dest); 788 } 789 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 790 791 return (*dest) += add_value; 792} 793 794xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; 795cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; 796cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; 797add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; 798 799#endif // !_LP64 && !COMPILER2 800 801#if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) 802 // See file build/solaris/makefiles/$compiler.make 803 // For compiler1 the architecture is v8 and frps isn't present in v8 804 extern "C" void _mark_fpu_nosave() { 805 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); 806 } 807#endif //defined(__sparc) && defined(COMPILER2) 808 809#ifndef PRODUCT 810void os::verify_stack_alignment() { 811} 812#endif 813