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