os_solaris_sparc.cpp revision 6267:8f18c8dbc6df
1/* 2 * Copyright (c) 1999, 2014, 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 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" JNIEXPORT int 282JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, 283 int abort_if_unrecognized) { 284 ucontext_t* uc = (ucontext_t*) ucVoid; 285 286 Thread* t = ThreadLocalStorage::get_thread_slow(); 287 288 // Must do this before SignalHandlerMark, if crash protection installed we will longjmp away 289 // (no destructors can be run) 290 os::WatcherThreadCrashProtection::check_crash_protection(sig, t); 291 292 SignalHandlerMark shm(t); 293 294 if(sig == SIGPIPE || sig == SIGXFSZ) { 295 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 296 return true; 297 } else { 298 if (PrintMiscellaneous && (WizardMode || Verbose)) { 299 char buf[64]; 300 warning("Ignoring %s - see 4229104 or 6499219", 301 os::exception_name(sig, buf, sizeof(buf))); 302 303 } 304 return true; 305 } 306 } 307 308 JavaThread* thread = NULL; 309 VMThread* vmthread = NULL; 310 if (os::Solaris::signal_handlers_are_installed) { 311 if (t != NULL ){ 312 if(t->is_Java_thread()) { 313 thread = (JavaThread*)t; 314 } 315 else if(t->is_VM_thread()){ 316 vmthread = (VMThread *)t; 317 } 318 } 319 } 320 321 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs"); 322 323 if (sig == os::Solaris::SIGasync()) { 324 if (thread || vmthread) { 325 OSThread::SR_handler(t, uc); 326 return true; 327 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { 328 return true; 329 } else { 330 // If os::Solaris::SIGasync not chained, and this is a non-vm and 331 // non-java thread 332 return true; 333 } 334 } 335 336 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { 337 // can't decode this kind of signal 338 info = NULL; 339 } else { 340 assert(sig == info->si_signo, "bad siginfo"); 341 } 342 343 // decide if this trap can be handled by a stub 344 address stub = NULL; 345 346 address pc = NULL; 347 address npc = NULL; 348 349 //%note os_trap_1 350 if (info != NULL && uc != NULL && thread != NULL) { 351 // factor me: getPCfromContext 352 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 353 npc = (address) uc->uc_mcontext.gregs[REG_nPC]; 354 355 // SafeFetch() support 356 if (StubRoutines::is_safefetch_fault(pc)) { 357 uc->uc_mcontext.gregs[REG_PC] = intptr_t(StubRoutines::continuation_for_safefetch_fault(pc)); 358 uc->uc_mcontext.gregs[REG_nPC] = uc->uc_mcontext.gregs[REG_PC] + 4; 359 return 1; 360 } 361 362 // Handle ALL stack overflow variations here 363 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { 364 address addr = (address) info->si_addr; 365 if (thread->in_stack_yellow_zone(addr)) { 366 thread->disable_stack_yellow_zone(); 367 // Sometimes the register windows are not properly flushed. 368 if(uc->uc_mcontext.gwins != NULL) { 369 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 370 } 371 if (thread->thread_state() == _thread_in_Java) { 372 // Throw a stack overflow exception. Guard pages will be reenabled 373 // while unwinding the stack. 374 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); 375 } else { 376 // Thread was in the vm or native code. Return and try to finish. 377 return true; 378 } 379 } else if (thread->in_stack_red_zone(addr)) { 380 // Fatal red zone violation. Disable the guard pages and fall through 381 // to handle_unexpected_exception way down below. 382 thread->disable_stack_red_zone(); 383 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); 384 // Sometimes the register windows are not properly flushed. 385 if(uc->uc_mcontext.gwins != NULL) { 386 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 387 } 388 } 389 } 390 391 392 if (thread->thread_state() == _thread_in_vm) { 393 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { 394 stub = StubRoutines::handler_for_unsafe_access(); 395 } 396 } 397 398 else if (thread->thread_state() == _thread_in_Java) { 399 // Java thread running in Java code => find exception handler if any 400 // a fault inside compiled code, the interpreter, or a stub 401 402 // Support Safepoint Polling 403 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { 404 stub = SharedRuntime::get_poll_stub(pc); 405 } 406 407 // Not needed on x86 solaris because verify_oops doesn't generate 408 // SEGV/BUS like sparc does. 409 if ( (sig == SIGSEGV || sig == SIGBUS) 410 && pc >= MacroAssembler::_verify_oop_implicit_branch[0] 411 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { 412 stub = MacroAssembler::_verify_oop_implicit_branch[2]; 413 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); 414 } 415 416 // This is not factored because on x86 solaris the patching for 417 // zombies does not generate a SEGV. 418 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { 419 // zombie method (ld [%g0],%o7 instruction) 420 stub = SharedRuntime::get_handle_wrong_method_stub(); 421 422 // At the stub it needs to look like a call from the caller of this 423 // method (not a call from the segv site). 424 pc = (address)uc->uc_mcontext.gregs[REG_O7]; 425 } 426 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { 427 // BugId 4454115: A read from a MappedByteBuffer can fault 428 // here if the underlying file has been truncated. 429 // Do not crash the VM in such a case. 430 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 431 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; 432 if (nm != NULL && nm->has_unsafe_access()) { 433 stub = StubRoutines::handler_for_unsafe_access(); 434 } 435 } 436 437 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { 438 // integer divide by zero 439 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 440 } 441 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { 442 // floating-point divide by zero 443 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); 444 } 445#ifdef COMPILER2 446 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { 447#ifdef ASSERT 448 #ifdef TIERED 449 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); 450 assert(cb->is_compiled_by_c2(), "Wrong compiler"); 451 #endif // TIERED 452#endif // ASSERT 453 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. 454 stub = SharedRuntime::get_ic_miss_stub(); 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#endif // COMPILER2 460 461 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { 462 // Determination of interpreter/vtable stub/compiled code null exception 463 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); 464 } 465 } 466 467 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in 468 // and the heap gets shrunk before the field access. 469 if ((sig == SIGSEGV) || (sig == SIGBUS)) { 470 address addr = JNI_FastGetField::find_slowcase_pc(pc); 471 if (addr != (address)-1) { 472 stub = addr; 473 } 474 } 475 476 // Check to see if we caught the safepoint code in the 477 // process of write protecting the memory serialization page. 478 // It write enables the page immediately after protecting it 479 // so just return. 480 if ((sig == SIGSEGV) && 481 os::is_memory_serialize_page(thread, (address)info->si_addr)) { 482 // Block current thread until the memory serialize page permission restored. 483 os::block_on_serialize_page_trap(); 484 return true; 485 } 486 } 487 488 if (stub != NULL) { 489 // save all thread context in case we need to restore it 490 491 thread->set_saved_exception_pc(pc); 492 thread->set_saved_exception_npc(npc); 493 494 // simulate a branch to the stub (a "call" in the safepoint stub case) 495 // factor me: setPC 496 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub; 497 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4); 498 499#ifndef PRODUCT 500 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); 501#endif /* PRODUCT */ 502 503 return true; 504 } 505 506 // signal-chaining 507 if (os::Solaris::chained_handler(sig, info, ucVoid)) { 508 return true; 509 } 510 511 if (!abort_if_unrecognized) { 512 // caller wants another chance, so give it to him 513 return false; 514 } 515 516 if (!os::Solaris::libjsig_is_loaded) { 517 struct sigaction oldAct; 518 sigaction(sig, (struct sigaction *)0, &oldAct); 519 if (oldAct.sa_sigaction != signalHandler) { 520 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) 521 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); 522 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); 523 } 524 } 525 526 if (pc == NULL && uc != NULL) { 527 pc = (address) uc->uc_mcontext.gregs[REG_PC]; 528 } 529 530 // Sometimes the register windows are not properly flushed. 531 if(uc->uc_mcontext.gwins != NULL) { 532 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); 533 } 534 535 // unmask current signal 536 sigset_t newset; 537 sigemptyset(&newset); 538 sigaddset(&newset, sig); 539 sigprocmask(SIG_UNBLOCK, &newset, NULL); 540 541 // Determine which sort of error to throw. Out of swap may signal 542 // on the thread stack, which could get a mapping error when touched. 543 address addr = (address) info->si_addr; 544 if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) { 545 vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "Out of swap space to map in thread stack."); 546 } 547 548 VMError err(t, sig, pc, info, ucVoid); 549 err.report_and_die(); 550 551 ShouldNotReachHere(); 552} 553 554void os::print_context(outputStream *st, void *context) { 555 if (context == NULL) return; 556 557 ucontext_t *uc = (ucontext_t*)context; 558 st->print_cr("Registers:"); 559 560 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT 561 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, 562 uc->uc_mcontext.gregs[REG_G1], 563 uc->uc_mcontext.gregs[REG_G2], 564 uc->uc_mcontext.gregs[REG_G3], 565 uc->uc_mcontext.gregs[REG_G4]); 566 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT 567 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, 568 uc->uc_mcontext.gregs[REG_G5], 569 uc->uc_mcontext.gregs[REG_G6], 570 uc->uc_mcontext.gregs[REG_G7], 571 uc->uc_mcontext.gregs[REG_Y]); 572 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT 573 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, 574 uc->uc_mcontext.gregs[REG_O0], 575 uc->uc_mcontext.gregs[REG_O1], 576 uc->uc_mcontext.gregs[REG_O2], 577 uc->uc_mcontext.gregs[REG_O3]); 578 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT 579 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, 580 uc->uc_mcontext.gregs[REG_O4], 581 uc->uc_mcontext.gregs[REG_O5], 582 uc->uc_mcontext.gregs[REG_O6], 583 uc->uc_mcontext.gregs[REG_O7]); 584 585 586 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 587 st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT 588 " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT, 589 sp[L0->sp_offset_in_saved_window()], 590 sp[L1->sp_offset_in_saved_window()], 591 sp[L2->sp_offset_in_saved_window()], 592 sp[L3->sp_offset_in_saved_window()]); 593 st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT 594 " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT, 595 sp[L4->sp_offset_in_saved_window()], 596 sp[L5->sp_offset_in_saved_window()], 597 sp[L6->sp_offset_in_saved_window()], 598 sp[L7->sp_offset_in_saved_window()]); 599 st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT 600 " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT, 601 sp[I0->sp_offset_in_saved_window()], 602 sp[I1->sp_offset_in_saved_window()], 603 sp[I2->sp_offset_in_saved_window()], 604 sp[I3->sp_offset_in_saved_window()]); 605 st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT 606 " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT, 607 sp[I4->sp_offset_in_saved_window()], 608 sp[I5->sp_offset_in_saved_window()], 609 sp[I6->sp_offset_in_saved_window()], 610 sp[I7->sp_offset_in_saved_window()]); 611 612 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, 613 uc->uc_mcontext.gregs[REG_PC], 614 uc->uc_mcontext.gregs[REG_nPC]); 615 st->cr(); 616 st->cr(); 617 618 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); 619 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); 620 st->cr(); 621 622 // Note: it may be unsafe to inspect memory near pc. For example, pc may 623 // point to garbage if entry point in an nmethod is corrupted. Leave 624 // this at the end, and hope for the best. 625 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); 626 address pc = epc.pc(); 627 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); 628 print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); 629} 630 631void os::print_register_info(outputStream *st, void *context) { 632 if (context == NULL) return; 633 634 ucontext_t *uc = (ucontext_t*)context; 635 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); 636 637 st->print_cr("Register to memory mapping:"); 638 st->cr(); 639 640 // this is only for the "general purpose" registers 641 st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]); 642 st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]); 643 st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]); 644 st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]); 645 st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]); 646 st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]); 647 st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]); 648 st->cr(); 649 650 st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]); 651 st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]); 652 st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]); 653 st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]); 654 st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]); 655 st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]); 656 st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]); 657 st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]); 658 st->cr(); 659 660 st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]); 661 st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]); 662 st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]); 663 st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]); 664 st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]); 665 st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]); 666 st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]); 667 st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]); 668 st->cr(); 669 670 st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]); 671 st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]); 672 st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]); 673 st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]); 674 st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]); 675 st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]); 676 st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]); 677 st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]); 678 st->cr(); 679} 680 681void os::Solaris::init_thread_fpu_state(void) { 682 // Nothing needed on Sparc. 683} 684 685#if !defined(COMPILER2) && !defined(_LP64) 686 687// These routines are the initial value of atomic_xchg_entry(), 688// atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() 689// until initialization is complete. 690// TODO - remove when the VM drops support for V8. 691 692typedef jint xchg_func_t (jint, volatile jint*); 693typedef jint cmpxchg_func_t (jint, volatile jint*, jint); 694typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); 695typedef jint add_func_t (jint, volatile jint*); 696 697jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { 698 // try to use the stub: 699 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); 700 701 if (func != NULL) { 702 os::atomic_xchg_func = func; 703 return (*func)(exchange_value, dest); 704 } 705 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 706 707 jint old_value = *dest; 708 *dest = exchange_value; 709 return old_value; 710} 711 712jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { 713 // try to use the stub: 714 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); 715 716 if (func != NULL) { 717 os::atomic_cmpxchg_func = func; 718 return (*func)(exchange_value, dest, compare_value); 719 } 720 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 721 722 jint old_value = *dest; 723 if (old_value == compare_value) 724 *dest = exchange_value; 725 return old_value; 726} 727 728jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { 729 // try to use the stub: 730 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); 731 732 if (func != NULL) { 733 os::atomic_cmpxchg_long_func = func; 734 return (*func)(exchange_value, dest, compare_value); 735 } 736 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 737 738 jlong old_value = *dest; 739 if (old_value == compare_value) 740 *dest = exchange_value; 741 return old_value; 742} 743 744jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { 745 // try to use the stub: 746 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); 747 748 if (func != NULL) { 749 os::atomic_add_func = func; 750 return (*func)(add_value, dest); 751 } 752 assert(Threads::number_of_threads() == 0, "for bootstrap only"); 753 754 return (*dest) += add_value; 755} 756 757xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; 758cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; 759cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; 760add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; 761 762#endif // !_LP64 && !COMPILER2 763 764#if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) 765 // See file build/solaris/makefiles/$compiler.make 766 // For compiler1 the architecture is v8 and frps isn't present in v8 767 extern "C" void _mark_fpu_nosave() { 768 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); 769 } 770#endif //defined(__sparc) && defined(COMPILER2) 771 772#ifndef PRODUCT 773void os::verify_stack_alignment() { 774} 775#endif 776