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