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src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp@bf2edd3c9b0f
src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp
Thu, 04 Oct 2012 06:31:07 -0700
- author
- neliasso
- date
- Thu, 04 Oct 2012 06:31:07 -0700
- changeset 4136
- bf2edd3c9b0f
- parent 3606
- da4be62fb889
- child 4153
- b9a9ed0f8eeb
- permissions
- -rw-r--r--
8000102: Resolve include conflicts
Summary: Removing include of c1/c1_runtime.hpp and opto/runtime.hpp from all os-files.
Reviewed-by: kvn
Contributed-by: nils.eliasson@oracle.com
1 /*
2 * Copyright (c) 1999, 2011, 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 */
25 // no precompiled headers
26 #include "assembler_sparc.inline.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/timer.hpp"
52 #include "thread_solaris.inline.hpp"
53 #include "utilities/events.hpp"
54 #include "utilities/vmError.hpp"
56 # include <signal.h> // needed first to avoid name collision for "std" with SC 5.0
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>
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>
82 #define MAX_PATH (2 * K)
84 // Minimum stack size for the VM. It's easier to document a constant
85 // but it's different for x86 and sparc because the page sizes are different.
86 #ifdef _LP64
87 size_t os::Solaris::min_stack_allowed = 128*K;
88 #else
89 size_t os::Solaris::min_stack_allowed = 96*K;
90 #endif
92 int os::Solaris::max_register_window_saves_before_flushing() {
93 // We should detect this at run time. For now, filling
94 // in with a constant.
95 return 8;
96 }
98 static void handle_unflushed_register_windows(gwindows_t *win) {
99 int restore_count = win->wbcnt;
100 int i;
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 }
109 char* os::non_memory_address_word() {
110 // Must never look like an address returned by reserve_memory,
111 // even in its subfields (as defined by the CPU immediate fields,
112 // if the CPU splits constants across multiple instructions).
113 // On SPARC, 0 != %hi(any real address), because there is no
114 // allocation in the first 1Kb of the virtual address space.
115 return (char*) 0;
116 }
118 // Validate a ucontext retrieved from walking a uc_link of a ucontext.
119 // There are issues with libthread giving out uc_links for different threads
120 // on the same uc_link chain and bad or circular links.
121 //
122 bool os::Solaris::valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect) {
123 if (valid >= suspect ||
124 valid->uc_stack.ss_flags != suspect->uc_stack.ss_flags ||
125 valid->uc_stack.ss_sp != suspect->uc_stack.ss_sp ||
126 valid->uc_stack.ss_size != suspect->uc_stack.ss_size) {
127 DEBUG_ONLY(tty->print_cr("valid_ucontext: failed test 1");)
128 return false;
129 }
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 }
146 // We will only follow one level of uc_link since there are libthread
147 // issues with ucontext linking and it is better to be safe and just
148 // let caller retry later.
149 ucontext_t* os::Solaris::get_valid_uc_in_signal_handler(Thread *thread,
150 ucontext_t *uc) {
152 ucontext_t *retuc = NULL;
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 }
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 }
179 // Assumes ucontext is valid
180 ExtendedPC os::Solaris::ucontext_get_ExtendedPC(ucontext_t *uc) {
181 address pc = (address)uc->uc_mcontext.gregs[REG_PC];
182 // set npc to zero to avoid using it for safepoint, good for profiling only
183 return ExtendedPC(pc);
184 }
186 // Assumes ucontext is valid
187 intptr_t* os::Solaris::ucontext_get_sp(ucontext_t *uc) {
188 return (intptr_t*)((intptr_t)uc->uc_mcontext.gregs[REG_SP] + STACK_BIAS);
189 }
191 // Solaris X86 only
192 intptr_t* os::Solaris::ucontext_get_fp(ucontext_t *uc) {
193 ShouldNotReachHere();
194 return NULL;
195 }
197 // For Forte Analyzer AsyncGetCallTrace profiling support - thread
198 // is currently interrupted by SIGPROF.
199 //
200 // ret_fp parameter is only used by Solaris X86.
201 //
202 // The difference between this and os::fetch_frame_from_context() is that
203 // here we try to skip nested signal frames.
204 ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread,
205 ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) {
207 assert(thread != NULL, "just checking");
208 assert(ret_sp != NULL, "just checking");
209 assert(ret_fp == NULL, "just checking");
211 ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc);
213 return os::fetch_frame_from_context(luc, ret_sp, ret_fp);
214 }
217 // ret_fp parameter is only used by Solaris X86.
218 ExtendedPC os::fetch_frame_from_context(void* ucVoid,
219 intptr_t** ret_sp, intptr_t** ret_fp) {
221 ExtendedPC epc;
222 ucontext_t *uc = (ucontext_t*)ucVoid;
224 if (uc != NULL) {
225 epc = os::Solaris::ucontext_get_ExtendedPC(uc);
226 if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc);
227 } else {
228 // construct empty ExtendedPC for return value checking
229 epc = ExtendedPC(NULL);
230 if (ret_sp) *ret_sp = (intptr_t *)NULL;
231 }
233 return epc;
234 }
236 frame os::fetch_frame_from_context(void* ucVoid) {
237 intptr_t* sp;
238 intptr_t* fp;
239 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp);
240 return frame(sp, frame::unpatchable, epc.pc());
241 }
243 frame os::get_sender_for_C_frame(frame* fr) {
244 return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc());
245 }
247 // Returns an estimate of the current stack pointer. Result must be guaranteed to
248 // point into the calling threads stack, and be no lower than the current stack
249 // pointer.
250 address os::current_stack_pointer() {
251 volatile int dummy;
252 address sp = (address)&dummy + 8; // %%%% need to confirm if this is right
253 return sp;
254 }
256 frame os::current_frame() {
257 intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
258 frame myframe(sp, frame::unpatchable,
259 CAST_FROM_FN_PTR(address, os::current_frame));
260 if (os::is_first_C_frame(&myframe)) {
261 // stack is not walkable
262 return frame(NULL, NULL, NULL);
263 } else {
264 return os::get_sender_for_C_frame(&myframe);
265 }
266 }
269 void GetThreadPC_Callback::execute(OSThread::InterruptArguments *args) {
270 Thread* thread = args->thread();
271 ucontext_t* uc = args->ucontext();
272 intptr_t* sp;
274 assert(ProfileVM && thread->is_VM_thread(), "just checking");
276 // Skip the mcontext corruption verification. If if occasionally
277 // things get corrupt, it is ok for profiling - we will just get an unresolved
278 // function name
279 ExtendedPC new_addr((address)uc->uc_mcontext.gregs[REG_PC]);
280 _addr = new_addr;
281 }
284 static int threadgetstate(thread_t tid, int *flags, lwpid_t *lwp, stack_t *ss, gregset_t rs, lwpstatus_t *lwpstatus) {
285 char lwpstatusfile[PROCFILE_LENGTH];
286 int lwpfd, err;
288 if (err = os::Solaris::thr_getstate(tid, flags, lwp, ss, rs))
289 return (err);
290 if (*flags == TRS_LWPID) {
291 sprintf(lwpstatusfile, "/proc/%d/lwp/%d/lwpstatus", getpid(),
292 *lwp);
293 if ((lwpfd = ::open(lwpstatusfile, O_RDONLY)) < 0) {
294 perror("thr_mutator_status: open lwpstatus");
295 return (EINVAL);
296 }
297 if (pread(lwpfd, lwpstatus, sizeof (lwpstatus_t), (off_t)0) !=
298 sizeof (lwpstatus_t)) {
299 perror("thr_mutator_status: read lwpstatus");
300 (void) ::close(lwpfd);
301 return (EINVAL);
302 }
303 (void) ::close(lwpfd);
304 }
305 return (0);
306 }
309 bool os::is_allocatable(size_t bytes) {
310 #ifdef _LP64
311 return true;
312 #else
313 return (bytes <= (size_t)3835*M);
314 #endif
315 }
317 extern "C" void Fetch32PFI () ;
318 extern "C" void Fetch32Resume () ;
319 extern "C" void FetchNPFI () ;
320 extern "C" void FetchNResume () ;
322 extern "C" JNIEXPORT int
323 JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid,
324 int abort_if_unrecognized) {
325 ucontext_t* uc = (ucontext_t*) ucVoid;
327 Thread* t = ThreadLocalStorage::get_thread_slow();
329 SignalHandlerMark shm(t);
331 if(sig == SIGPIPE || sig == SIGXFSZ) {
332 if (os::Solaris::chained_handler(sig, info, ucVoid)) {
333 return true;
334 } else {
335 if (PrintMiscellaneous && (WizardMode || Verbose)) {
336 char buf[64];
337 warning("Ignoring %s - see 4229104 or 6499219",
338 os::exception_name(sig, buf, sizeof(buf)));
340 }
341 return true;
342 }
343 }
345 JavaThread* thread = NULL;
346 VMThread* vmthread = NULL;
347 if (os::Solaris::signal_handlers_are_installed) {
348 if (t != NULL ){
349 if(t->is_Java_thread()) {
350 thread = (JavaThread*)t;
351 }
352 else if(t->is_VM_thread()){
353 vmthread = (VMThread *)t;
354 }
355 }
356 }
358 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs");
360 if (sig == os::Solaris::SIGasync()) {
361 if (thread) {
362 OSThread::InterruptArguments args(thread, uc);
363 thread->osthread()->do_interrupt_callbacks_at_interrupt(&args);
364 return true;
365 } else if (vmthread) {
366 OSThread::InterruptArguments args(vmthread, uc);
367 vmthread->osthread()->do_interrupt_callbacks_at_interrupt(&args);
368 return true;
369 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) {
370 return true;
371 } else {
372 // If os::Solaris::SIGasync not chained, and this is a non-vm and
373 // non-java thread
374 return true;
375 }
376 }
378 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) {
379 // can't decode this kind of signal
380 info = NULL;
381 } else {
382 assert(sig == info->si_signo, "bad siginfo");
383 }
385 // decide if this trap can be handled by a stub
386 address stub = NULL;
388 address pc = NULL;
389 address npc = NULL;
391 //%note os_trap_1
392 if (info != NULL && uc != NULL && thread != NULL) {
393 // factor me: getPCfromContext
394 pc = (address) uc->uc_mcontext.gregs[REG_PC];
395 npc = (address) uc->uc_mcontext.gregs[REG_nPC];
397 // SafeFetch() support
398 // Implemented with either a fixed set of addresses such
399 // as Fetch32*, or with Thread._OnTrap.
400 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) {
401 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ;
402 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ;
403 return true ;
404 }
405 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) {
406 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ;
407 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ;
408 return true ;
409 }
411 // Handle ALL stack overflow variations here
412 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) {
413 address addr = (address) info->si_addr;
414 if (thread->in_stack_yellow_zone(addr)) {
415 thread->disable_stack_yellow_zone();
416 // Sometimes the register windows are not properly flushed.
417 if(uc->uc_mcontext.gwins != NULL) {
418 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
419 }
420 if (thread->thread_state() == _thread_in_Java) {
421 // Throw a stack overflow exception. Guard pages will be reenabled
422 // while unwinding the stack.
423 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW);
424 } else {
425 // Thread was in the vm or native code. Return and try to finish.
426 return true;
427 }
428 } else if (thread->in_stack_red_zone(addr)) {
429 // Fatal red zone violation. Disable the guard pages and fall through
430 // to handle_unexpected_exception way down below.
431 thread->disable_stack_red_zone();
432 tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
433 // Sometimes the register windows are not properly flushed.
434 if(uc->uc_mcontext.gwins != NULL) {
435 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
436 }
437 }
438 }
441 if (thread->thread_state() == _thread_in_vm) {
442 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) {
443 stub = StubRoutines::handler_for_unsafe_access();
444 }
445 }
447 else if (thread->thread_state() == _thread_in_Java) {
448 // Java thread running in Java code => find exception handler if any
449 // a fault inside compiled code, the interpreter, or a stub
451 // Support Safepoint Polling
452 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) {
453 stub = SharedRuntime::get_poll_stub(pc);
454 }
456 // Not needed on x86 solaris because verify_oops doesn't generate
457 // SEGV/BUS like sparc does.
458 if ( (sig == SIGSEGV || sig == SIGBUS)
459 && pc >= MacroAssembler::_verify_oop_implicit_branch[0]
460 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) {
461 stub = MacroAssembler::_verify_oop_implicit_branch[2];
462 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr);
463 }
465 // This is not factored because on x86 solaris the patching for
466 // zombies does not generate a SEGV.
467 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) {
468 // zombie method (ld [%g0],%o7 instruction)
469 stub = SharedRuntime::get_handle_wrong_method_stub();
471 // At the stub it needs to look like a call from the caller of this
472 // method (not a call from the segv site).
473 pc = (address)uc->uc_mcontext.gregs[REG_O7];
474 }
475 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) {
476 // BugId 4454115: A read from a MappedByteBuffer can fault
477 // here if the underlying file has been truncated.
478 // Do not crash the VM in such a case.
479 CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
480 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
481 if (nm != NULL && nm->has_unsafe_access()) {
482 stub = StubRoutines::handler_for_unsafe_access();
483 }
484 }
486 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) {
487 // integer divide by zero
488 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
489 }
490 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) {
491 // floating-point divide by zero
492 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
493 }
494 #ifdef COMPILER2
495 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) {
496 #ifdef ASSERT
497 #ifdef TIERED
498 CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
499 assert(cb->is_compiled_by_c2(), "Wrong compiler");
500 #endif // TIERED
501 #endif // ASSERT
502 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken.
503 stub = SharedRuntime::get_ic_miss_stub();
504 // At the stub it needs to look like a call from the caller of this
505 // method (not a call from the segv site).
506 pc = (address)uc->uc_mcontext.gregs[REG_O7];
507 }
508 #endif // COMPILER2
510 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) {
511 // Determination of interpreter/vtable stub/compiled code null exception
512 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
513 }
514 }
516 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in
517 // and the heap gets shrunk before the field access.
518 if ((sig == SIGSEGV) || (sig == SIGBUS)) {
519 address addr = JNI_FastGetField::find_slowcase_pc(pc);
520 if (addr != (address)-1) {
521 stub = addr;
522 }
523 }
525 // Check to see if we caught the safepoint code in the
526 // process of write protecting the memory serialization page.
527 // It write enables the page immediately after protecting it
528 // so just return.
529 if ((sig == SIGSEGV) &&
530 os::is_memory_serialize_page(thread, (address)info->si_addr)) {
531 // Block current thread until the memory serialize page permission restored.
532 os::block_on_serialize_page_trap();
533 return true;
534 }
535 }
537 if (stub != NULL) {
538 // save all thread context in case we need to restore it
540 thread->set_saved_exception_pc(pc);
541 thread->set_saved_exception_npc(npc);
543 // simulate a branch to the stub (a "call" in the safepoint stub case)
544 // factor me: setPC
545 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub;
546 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4);
548 #ifndef PRODUCT
549 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__);
550 #endif /* PRODUCT */
552 return true;
553 }
555 // signal-chaining
556 if (os::Solaris::chained_handler(sig, info, ucVoid)) {
557 return true;
558 }
560 if (!abort_if_unrecognized) {
561 // caller wants another chance, so give it to him
562 return false;
563 }
565 if (!os::Solaris::libjsig_is_loaded) {
566 struct sigaction oldAct;
567 sigaction(sig, (struct sigaction *)0, &oldAct);
568 if (oldAct.sa_sigaction != signalHandler) {
569 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
570 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
571 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand);
572 }
573 }
575 if (pc == NULL && uc != NULL) {
576 pc = (address) uc->uc_mcontext.gregs[REG_PC];
577 }
579 // Sometimes the register windows are not properly flushed.
580 if(uc->uc_mcontext.gwins != NULL) {
581 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
582 }
584 // unmask current signal
585 sigset_t newset;
586 sigemptyset(&newset);
587 sigaddset(&newset, sig);
588 sigprocmask(SIG_UNBLOCK, &newset, NULL);
590 // Determine which sort of error to throw. Out of swap may signal
591 // on the thread stack, which could get a mapping error when touched.
592 address addr = (address) info->si_addr;
593 if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) {
594 vm_exit_out_of_memory(0, "Out of swap space to map in thread stack.");
595 }
597 VMError err(t, sig, pc, info, ucVoid);
598 err.report_and_die();
600 ShouldNotReachHere();
601 }
603 void os::print_context(outputStream *st, void *context) {
604 if (context == NULL) return;
606 ucontext_t *uc = (ucontext_t*)context;
607 st->print_cr("Registers:");
609 st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT
610 " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT,
611 uc->uc_mcontext.gregs[REG_G1],
612 uc->uc_mcontext.gregs[REG_G2],
613 uc->uc_mcontext.gregs[REG_G3],
614 uc->uc_mcontext.gregs[REG_G4]);
615 st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT
616 " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT,
617 uc->uc_mcontext.gregs[REG_G5],
618 uc->uc_mcontext.gregs[REG_G6],
619 uc->uc_mcontext.gregs[REG_G7],
620 uc->uc_mcontext.gregs[REG_Y]);
621 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT
622 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT,
623 uc->uc_mcontext.gregs[REG_O0],
624 uc->uc_mcontext.gregs[REG_O1],
625 uc->uc_mcontext.gregs[REG_O2],
626 uc->uc_mcontext.gregs[REG_O3]);
627 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT
628 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT,
629 uc->uc_mcontext.gregs[REG_O4],
630 uc->uc_mcontext.gregs[REG_O5],
631 uc->uc_mcontext.gregs[REG_O6],
632 uc->uc_mcontext.gregs[REG_O7]);
635 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc);
636 st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT
637 " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT,
638 sp[L0->sp_offset_in_saved_window()],
639 sp[L1->sp_offset_in_saved_window()],
640 sp[L2->sp_offset_in_saved_window()],
641 sp[L3->sp_offset_in_saved_window()]);
642 st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT
643 " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT,
644 sp[L4->sp_offset_in_saved_window()],
645 sp[L5->sp_offset_in_saved_window()],
646 sp[L6->sp_offset_in_saved_window()],
647 sp[L7->sp_offset_in_saved_window()]);
648 st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT
649 " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT,
650 sp[I0->sp_offset_in_saved_window()],
651 sp[I1->sp_offset_in_saved_window()],
652 sp[I2->sp_offset_in_saved_window()],
653 sp[I3->sp_offset_in_saved_window()]);
654 st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT
655 " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT,
656 sp[I4->sp_offset_in_saved_window()],
657 sp[I5->sp_offset_in_saved_window()],
658 sp[I6->sp_offset_in_saved_window()],
659 sp[I7->sp_offset_in_saved_window()]);
661 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT,
662 uc->uc_mcontext.gregs[REG_PC],
663 uc->uc_mcontext.gregs[REG_nPC]);
664 st->cr();
665 st->cr();
667 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp);
668 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t));
669 st->cr();
671 // Note: it may be unsafe to inspect memory near pc. For example, pc may
672 // point to garbage if entry point in an nmethod is corrupted. Leave
673 // this at the end, and hope for the best.
674 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc);
675 address pc = epc.pc();
676 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc);
677 print_hex_dump(st, pc - 32, pc + 32, sizeof(char));
678 }
680 void os::print_register_info(outputStream *st, void *context) {
681 if (context == NULL) return;
683 ucontext_t *uc = (ucontext_t*)context;
684 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc);
686 st->print_cr("Register to memory mapping:");
687 st->cr();
689 // this is only for the "general purpose" registers
690 st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]);
691 st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]);
692 st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]);
693 st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]);
694 st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]);
695 st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]);
696 st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]);
697 st->cr();
699 st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]);
700 st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]);
701 st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]);
702 st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]);
703 st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]);
704 st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]);
705 st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]);
706 st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]);
707 st->cr();
709 st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]);
710 st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]);
711 st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]);
712 st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]);
713 st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]);
714 st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]);
715 st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]);
716 st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]);
717 st->cr();
719 st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]);
720 st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]);
721 st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]);
722 st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]);
723 st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]);
724 st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]);
725 st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]);
726 st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]);
727 st->cr();
728 }
730 void os::Solaris::init_thread_fpu_state(void) {
731 // Nothing needed on Sparc.
732 }
734 #if !defined(COMPILER2) && !defined(_LP64)
736 // These routines are the initial value of atomic_xchg_entry(),
737 // atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry()
738 // until initialization is complete.
739 // TODO - remove when the VM drops support for V8.
741 typedef jint xchg_func_t (jint, volatile jint*);
742 typedef jint cmpxchg_func_t (jint, volatile jint*, jint);
743 typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong);
744 typedef jint add_func_t (jint, volatile jint*);
746 jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) {
747 // try to use the stub:
748 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry());
750 if (func != NULL) {
751 os::atomic_xchg_func = func;
752 return (*func)(exchange_value, dest);
753 }
754 assert(Threads::number_of_threads() == 0, "for bootstrap only");
756 jint old_value = *dest;
757 *dest = exchange_value;
758 return old_value;
759 }
761 jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) {
762 // try to use the stub:
763 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry());
765 if (func != NULL) {
766 os::atomic_cmpxchg_func = func;
767 return (*func)(exchange_value, dest, compare_value);
768 }
769 assert(Threads::number_of_threads() == 0, "for bootstrap only");
771 jint old_value = *dest;
772 if (old_value == compare_value)
773 *dest = exchange_value;
774 return old_value;
775 }
777 jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) {
778 // try to use the stub:
779 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry());
781 if (func != NULL) {
782 os::atomic_cmpxchg_long_func = func;
783 return (*func)(exchange_value, dest, compare_value);
784 }
785 assert(Threads::number_of_threads() == 0, "for bootstrap only");
787 jlong old_value = *dest;
788 if (old_value == compare_value)
789 *dest = exchange_value;
790 return old_value;
791 }
793 jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) {
794 // try to use the stub:
795 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry());
797 if (func != NULL) {
798 os::atomic_add_func = func;
799 return (*func)(add_value, dest);
800 }
801 assert(Threads::number_of_threads() == 0, "for bootstrap only");
803 return (*dest) += add_value;
804 }
806 xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap;
807 cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap;
808 cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap;
809 add_func_t* os::atomic_add_func = os::atomic_add_bootstrap;
811 #endif // !_LP64 && !COMPILER2
813 #if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE)
814 // See file build/solaris/makefiles/$compiler.make
815 // For compiler1 the architecture is v8 and frps isn't present in v8
816 extern "C" void _mark_fpu_nosave() {
817 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :);
818 }
819 #endif //defined(__sparc) && defined(COMPILER2)
821 #ifndef PRODUCT
822 void os::verify_stack_alignment() {
823 }
824 #endif
