1 /*
2 * Copyright (c) 1999, 2010, 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 "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/hpi.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/timer.hpp"
53 #include "thread_solaris.inline.hpp"
54 #include "utilities/events.hpp"
55 #include "utilities/vmError.hpp"
56 #ifdef COMPILER1
57 #include "c1/c1_Runtime1.hpp"
58 #endif
59 #ifdef COMPILER2
60 #include "opto/runtime.hpp"
61 #endif
62
63
64 # include <signal.h> // needed first to avoid name collision for "std" with SC 5.0
65
66 // put OS-includes here
67 # include <sys/types.h>
68 # include <sys/mman.h>
69 # include <pthread.h>
70 # include <errno.h>
71 # include <dlfcn.h>
72 # include <stdio.h>
73 # include <unistd.h>
74 # include <sys/resource.h>
75 # include <thread.h>
76 # include <sys/stat.h>
77 # include <sys/time.h>
78 # include <sys/filio.h>
79 # include <sys/utsname.h>
80 # include <sys/systeminfo.h>
81 # include <sys/socket.h>
82 # include <sys/lwp.h>
83 # include <pwd.h>
84 # include <poll.h>
85 # include <sys/lwp.h>
86
87 # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later
88 # include <sys/procfs.h> // see comment in <sys/procfs.h>
89
90 #define MAX_PATH (2 * K)
91
92 // Minimum stack size for the VM. It's easier to document a constant
93 // but it's different for x86 and sparc because the page sizes are different.
94 #ifdef _LP64
95 size_t os::Solaris::min_stack_allowed = 128*K;
96 #else
97 size_t os::Solaris::min_stack_allowed = 96*K;
98 #endif
99
100 int os::Solaris::max_register_window_saves_before_flushing() {
101 // We should detect this at run time. For now, filling
102 // in with a constant.
103 return 8;
104 }
105
106 static void handle_unflushed_register_windows(gwindows_t *win) {
107 int restore_count = win->wbcnt;
108 int i;
109
110 for(i=0; i<restore_count; i++) {
111 address sp = ((address)win->spbuf[i]) + STACK_BIAS;
112 address reg_win = (address)&win->wbuf[i];
113 memcpy(sp,reg_win,sizeof(struct rwindow));
114 }
115 }
116
117 char* os::non_memory_address_word() {
118 // Must never look like an address returned by reserve_memory,
119 // even in its subfields (as defined by the CPU immediate fields,
120 // if the CPU splits constants across multiple instructions).
121 // On SPARC, 0 != %hi(any real address), because there is no
122 // allocation in the first 1Kb of the virtual address space.
123 return (char*) 0;
124 }
125
126 // Validate a ucontext retrieved from walking a uc_link of a ucontext.
127 // There are issues with libthread giving out uc_links for different threads
128 // on the same uc_link chain and bad or circular links.
129 //
130 bool os::Solaris::valid_ucontext(Thread* thread, ucontext_t* valid, ucontext_t* suspect) {
131 if (valid >= suspect ||
132 valid->uc_stack.ss_flags != suspect->uc_stack.ss_flags ||
133 valid->uc_stack.ss_sp != suspect->uc_stack.ss_sp ||
134 valid->uc_stack.ss_size != suspect->uc_stack.ss_size) {
135 DEBUG_ONLY(tty->print_cr("valid_ucontext: failed test 1");)
136 return false;
137 }
138
139 if (thread->is_Java_thread()) {
140 if (!valid_stack_address(thread, (address)suspect)) {
141 DEBUG_ONLY(tty->print_cr("valid_ucontext: uc_link not in thread stack");)
142 return false;
143 }
144 address _sp = (address)((intptr_t)suspect->uc_mcontext.gregs[REG_SP] + STACK_BIAS);
145 if (!valid_stack_address(thread, _sp) ||
146 !frame::is_valid_stack_pointer(((JavaThread*)thread)->base_of_stack_pointer(), (intptr_t*)_sp)) {
147 DEBUG_ONLY(tty->print_cr("valid_ucontext: stackpointer not in thread stack");)
148 return false;
149 }
150 }
151 return true;
152 }
153
154 // We will only follow one level of uc_link since there are libthread
155 // issues with ucontext linking and it is better to be safe and just
156 // let caller retry later.
157 ucontext_t* os::Solaris::get_valid_uc_in_signal_handler(Thread *thread,
158 ucontext_t *uc) {
159
160 ucontext_t *retuc = NULL;
161
162 // Sometimes the topmost register windows are not properly flushed.
163 // i.e., if the kernel would have needed to take a page fault
164 if (uc != NULL && uc->uc_mcontext.gwins != NULL) {
165 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
166 }
167
168 if (uc != NULL) {
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 // first ucontext is valid so try the next one
174 uc = uc->uc_link;
175 if (uc->uc_link == NULL) {
176 // cannot validate without uc_link so accept current ucontext
177 retuc = uc;
178 } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) {
179 // the ucontext one level down is also valid so return it
180 retuc = uc;
181 }
182 }
183 }
184 return retuc;
185 }
186
187 // Assumes ucontext is valid
188 ExtendedPC os::Solaris::ucontext_get_ExtendedPC(ucontext_t *uc) {
189 address pc = (address)uc->uc_mcontext.gregs[REG_PC];
190 // set npc to zero to avoid using it for safepoint, good for profiling only
191 return ExtendedPC(pc);
192 }
193
194 // Assumes ucontext is valid
195 intptr_t* os::Solaris::ucontext_get_sp(ucontext_t *uc) {
196 return (intptr_t*)((intptr_t)uc->uc_mcontext.gregs[REG_SP] + STACK_BIAS);
197 }
198
199 // Solaris X86 only
200 intptr_t* os::Solaris::ucontext_get_fp(ucontext_t *uc) {
201 ShouldNotReachHere();
202 return NULL;
203 }
204
205 // For Forte Analyzer AsyncGetCallTrace profiling support - thread
206 // is currently interrupted by SIGPROF.
207 //
208 // ret_fp parameter is only used by Solaris X86.
209 //
210 // The difference between this and os::fetch_frame_from_context() is that
211 // here we try to skip nested signal frames.
212 ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread,
213 ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) {
214
215 assert(thread != NULL, "just checking");
216 assert(ret_sp != NULL, "just checking");
217 assert(ret_fp == NULL, "just checking");
218
219 ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc);
220
221 return os::fetch_frame_from_context(luc, ret_sp, ret_fp);
222 }
223
224
225 // ret_fp parameter is only used by Solaris X86.
226 ExtendedPC os::fetch_frame_from_context(void* ucVoid,
227 intptr_t** ret_sp, intptr_t** ret_fp) {
228
229 ExtendedPC epc;
230 ucontext_t *uc = (ucontext_t*)ucVoid;
231
232 if (uc != NULL) {
233 epc = os::Solaris::ucontext_get_ExtendedPC(uc);
234 if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc);
235 } else {
236 // construct empty ExtendedPC for return value checking
237 epc = ExtendedPC(NULL);
238 if (ret_sp) *ret_sp = (intptr_t *)NULL;
239 }
240
241 return epc;
242 }
243
244 frame os::fetch_frame_from_context(void* ucVoid) {
245 intptr_t* sp;
246 intptr_t* fp;
247 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp);
248 return frame(sp, frame::unpatchable, epc.pc());
249 }
250
251 frame os::get_sender_for_C_frame(frame* fr) {
252 return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc());
253 }
254
255 frame os::current_frame() {
256 intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()();
257 frame myframe(sp, frame::unpatchable,
258 CAST_FROM_FN_PTR(address, os::current_frame));
259 if (os::is_first_C_frame(&myframe)) {
260 // stack is not walkable
261 return frame(NULL, NULL, NULL);
262 } else {
263 return os::get_sender_for_C_frame(&myframe);
264 }
265 }
266
267
268 void GetThreadPC_Callback::execute(OSThread::InterruptArguments *args) {
269 Thread* thread = args->thread();
270 ucontext_t* uc = args->ucontext();
271 intptr_t* sp;
272
273 assert(ProfileVM && thread->is_VM_thread(), "just checking");
274
275 // Skip the mcontext corruption verification. If if occasionally
276 // things get corrupt, it is ok for profiling - we will just get an unresolved
277 // function name
278 ExtendedPC new_addr((address)uc->uc_mcontext.gregs[REG_PC]);
279 _addr = new_addr;
280 }
281
282
283 static int threadgetstate(thread_t tid, int *flags, lwpid_t *lwp, stack_t *ss, gregset_t rs, lwpstatus_t *lwpstatus) {
284 char lwpstatusfile[PROCFILE_LENGTH];
285 int lwpfd, err;
286
287 if (err = os::Solaris::thr_getstate(tid, flags, lwp, ss, rs))
288 return (err);
289 if (*flags == TRS_LWPID) {
290 sprintf(lwpstatusfile, "/proc/%d/lwp/%d/lwpstatus", getpid(),
291 *lwp);
292 if ((lwpfd = open(lwpstatusfile, O_RDONLY)) < 0) {
293 perror("thr_mutator_status: open lwpstatus");
294 return (EINVAL);
295 }
296 if (pread(lwpfd, lwpstatus, sizeof (lwpstatus_t), (off_t)0) !=
297 sizeof (lwpstatus_t)) {
298 perror("thr_mutator_status: read lwpstatus");
299 (void) close(lwpfd);
300 return (EINVAL);
301 }
302 (void) close(lwpfd);
303 }
304 return (0);
305 }
306
307
308 bool os::is_allocatable(size_t bytes) {
309 #ifdef _LP64
310 return true;
311 #else
312 return (bytes <= (size_t)3835*M);
313 #endif
314 }
315
316 extern "C" void Fetch32PFI () ;
317 extern "C" void Fetch32Resume () ;
318 extern "C" void FetchNPFI () ;
319 extern "C" void FetchNResume () ;
320
321 extern "C" int JVM_handle_solaris_signal(int signo, siginfo_t* siginfo, void* ucontext, int abort_if_unrecognized);
322
323 int JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) {
324 ucontext_t* uc = (ucontext_t*) ucVoid;
325
326 Thread* t = ThreadLocalStorage::get_thread_slow();
327
328 SignalHandlerMark shm(t);
329
330 if(sig == SIGPIPE || sig == SIGXFSZ) {
331 if (os::Solaris::chained_handler(sig, info, ucVoid)) {
332 return true;
333 } else {
334 if (PrintMiscellaneous && (WizardMode || Verbose)) {
335 char buf[64];
336 warning("Ignoring %s - see 4229104 or 6499219",
337 os::exception_name(sig, buf, sizeof(buf)));
338
339 }
340 return true;
341 }
342 }
343
344 JavaThread* thread = NULL;
345 VMThread* vmthread = NULL;
346 if (os::Solaris::signal_handlers_are_installed) {
347 if (t != NULL ){
348 if(t->is_Java_thread()) {
349 thread = (JavaThread*)t;
350 }
351 else if(t->is_VM_thread()){
352 vmthread = (VMThread *)t;
353 }
354 }
355 }
356
357 guarantee(sig != os::Solaris::SIGinterrupt(), "Can not chain VM interrupt signal, try -XX:+UseAltSigs");
358
359 if (sig == os::Solaris::SIGasync()) {
360 if (thread) {
361 OSThread::InterruptArguments args(thread, uc);
362 thread->osthread()->do_interrupt_callbacks_at_interrupt(&args);
363 return true;
364 } else if (vmthread) {
365 OSThread::InterruptArguments args(vmthread, uc);
366 vmthread->osthread()->do_interrupt_callbacks_at_interrupt(&args);
367 return true;
368 } else if (os::Solaris::chained_handler(sig, info, ucVoid)) {
369 return true;
370 } else {
371 // If os::Solaris::SIGasync not chained, and this is a non-vm and
372 // non-java thread
373 return true;
374 }
375 }
376
377 if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) {
378 // can't decode this kind of signal
379 info = NULL;
380 } else {
381 assert(sig == info->si_signo, "bad siginfo");
382 }
383
384 // decide if this trap can be handled by a stub
385 address stub = NULL;
386
387 address pc = NULL;
388 address npc = NULL;
389
390 //%note os_trap_1
391 if (info != NULL && uc != NULL && thread != NULL) {
392 // factor me: getPCfromContext
393 pc = (address) uc->uc_mcontext.gregs[REG_PC];
394 npc = (address) uc->uc_mcontext.gregs[REG_nPC];
395
396 // SafeFetch() support
397 // Implemented with either a fixed set of addresses such
398 // as Fetch32*, or with Thread._OnTrap.
399 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(Fetch32PFI)) {
400 uc->uc_mcontext.gregs [REG_PC] = intptr_t(Fetch32Resume) ;
401 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(Fetch32Resume) + 4 ;
402 return true ;
403 }
404 if (uc->uc_mcontext.gregs[REG_PC] == intptr_t(FetchNPFI)) {
405 uc->uc_mcontext.gregs [REG_PC] = intptr_t(FetchNResume) ;
406 uc->uc_mcontext.gregs [REG_nPC] = intptr_t(FetchNResume) + 4 ;
407 return true ;
408 }
409
410 // Handle ALL stack overflow variations here
411 if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) {
412 address addr = (address) info->si_addr;
413 if (thread->in_stack_yellow_zone(addr)) {
414 thread->disable_stack_yellow_zone();
415 // Sometimes the register windows are not properly flushed.
416 if(uc->uc_mcontext.gwins != NULL) {
417 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
418 }
419 if (thread->thread_state() == _thread_in_Java) {
420 // Throw a stack overflow exception. Guard pages will be reenabled
421 // while unwinding the stack.
422 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW);
423 } else {
424 // Thread was in the vm or native code. Return and try to finish.
425 return true;
426 }
427 } else if (thread->in_stack_red_zone(addr)) {
428 // Fatal red zone violation. Disable the guard pages and fall through
429 // to handle_unexpected_exception way down below.
430 thread->disable_stack_red_zone();
431 tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
432 // Sometimes the register windows are not properly flushed.
433 if(uc->uc_mcontext.gwins != NULL) {
434 ::handle_unflushed_register_windows(uc->uc_mcontext.gwins);
435 }
436 }
437 }
438
439
440 if (thread->thread_state() == _thread_in_vm) {
441 if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) {
442 stub = StubRoutines::handler_for_unsafe_access();
443 }
444 }
445
446 else if (thread->thread_state() == _thread_in_Java) {
447 // Java thread running in Java code => find exception handler if any
448 // a fault inside compiled code, the interpreter, or a stub
449
450 // Support Safepoint Polling
451 if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) {
452 stub = SharedRuntime::get_poll_stub(pc);
453 }
454
455 // Not needed on x86 solaris because verify_oops doesn't generate
456 // SEGV/BUS like sparc does.
457 if ( (sig == SIGSEGV || sig == SIGBUS)
458 && pc >= MacroAssembler::_verify_oop_implicit_branch[0]
459 && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) {
460 stub = MacroAssembler::_verify_oop_implicit_branch[2];
461 warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr);
462 }
463
464 // This is not factored because on x86 solaris the patching for
465 // zombies does not generate a SEGV.
466 else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) {
467 // zombie method (ld [%g0],%o7 instruction)
468 stub = SharedRuntime::get_handle_wrong_method_stub();
469
470 // At the stub it needs to look like a call from the caller of this
471 // method (not a call from the segv site).
472 pc = (address)uc->uc_mcontext.gregs[REG_O7];
473 }
474 else if (sig == SIGBUS && info->si_code == BUS_OBJERR) {
475 // BugId 4454115: A read from a MappedByteBuffer can fault
476 // here if the underlying file has been truncated.
477 // Do not crash the VM in such a case.
478 CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
479 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
480 if (nm != NULL && nm->has_unsafe_access()) {
481 stub = StubRoutines::handler_for_unsafe_access();
482 }
483 }
484
485 else if (sig == SIGFPE && info->si_code == FPE_INTDIV) {
486 // integer divide by zero
487 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
488 }
489 else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) {
490 // floating-point divide by zero
491 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
492 }
493 #ifdef COMPILER2
494 else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) {
495 #ifdef ASSERT
496 #ifdef TIERED
497 CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
498 assert(cb->is_compiled_by_c2(), "Wrong compiler");
499 #endif // TIERED
500 #endif // ASSERT
501 // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken.
502 stub = SharedRuntime::get_ic_miss_stub();
503 // At the stub it needs to look like a call from the caller of this
504 // method (not a call from the segv site).
505 pc = (address)uc->uc_mcontext.gregs[REG_O7];
506 }
507 #endif // COMPILER2
508
509 else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) {
510 // Determination of interpreter/vtable stub/compiled code null exception
511 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
512 }
513 }
514
515 // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in
516 // and the heap gets shrunk before the field access.
517 if ((sig == SIGSEGV) || (sig == SIGBUS)) {
518 address addr = JNI_FastGetField::find_slowcase_pc(pc);
519 if (addr != (address)-1) {
520 stub = addr;
521 }
522 }
523
524 // Check to see if we caught the safepoint code in the
525 // process of write protecting the memory serialization page.
526 // It write enables the page immediately after protecting it
527 // so just return.
528 if ((sig == SIGSEGV) &&
529 os::is_memory_serialize_page(thread, (address)info->si_addr)) {
530 // Block current thread until the memory serialize page permission restored.
531 os::block_on_serialize_page_trap();
532 return true;
533 }
534 }
535
536 if (stub != NULL) {
537 // save all thread context in case we need to restore it
538
539 thread->set_saved_exception_pc(pc);
540 thread->set_saved_exception_npc(npc);
541
542 // simulate a branch to the stub (a "call" in the safepoint stub case)
543 // factor me: setPC
544 uc->uc_mcontext.gregs[REG_PC ] = (greg_t)stub;
545 uc->uc_mcontext.gregs[REG_nPC] = (greg_t)(stub + 4);
546
547 #ifndef PRODUCT
548 if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__);
549 #endif /* PRODUCT */
550
551 return true;
552 }
553
554 // signal-chaining
555 if (os::Solaris::chained_handler(sig, info, ucVoid)) {
556 return true;
557 }
558
559 if (!abort_if_unrecognized) {
560 // caller wants another chance, so give it to him
561 return false;
562 }
563
564 if (!os::Solaris::libjsig_is_loaded) {
565 struct sigaction oldAct;
566 sigaction(sig, (struct sigaction *)0, &oldAct);
567 if (oldAct.sa_sigaction != signalHandler) {
568 void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction)
569 : CAST_FROM_FN_PTR(void*, oldAct.sa_handler);
570 warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand);
571 }
572 }
573
574 if (pc == NULL && uc != NULL) {
575 pc = (address) uc->uc_mcontext.gregs[REG_PC];
576 }
577
578 // unmask current signal
579 sigset_t newset;
580 sigemptyset(&newset);
581 sigaddset(&newset, sig);
582 sigprocmask(SIG_UNBLOCK, &newset, NULL);
583
584 VMError err(t, sig, pc, info, ucVoid);
585 err.report_and_die();
586
587 ShouldNotReachHere();
588 }
589
590 void os::print_context(outputStream *st, void *context) {
591 if (context == NULL) return;
592
593 ucontext_t *uc = (ucontext_t*)context;
594 st->print_cr("Registers:");
595
596 st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT
597 " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT,
598 uc->uc_mcontext.gregs[REG_O0],
599 uc->uc_mcontext.gregs[REG_O1],
600 uc->uc_mcontext.gregs[REG_O2],
601 uc->uc_mcontext.gregs[REG_O3]);
602 st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT
603 " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT,
604 uc->uc_mcontext.gregs[REG_O4],
605 uc->uc_mcontext.gregs[REG_O5],
606 uc->uc_mcontext.gregs[REG_O6],
607 uc->uc_mcontext.gregs[REG_O7]);
608
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
622 st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT,
623 uc->uc_mcontext.gregs[REG_PC],
624 uc->uc_mcontext.gregs[REG_nPC]);
625
626 st->cr();
627 st->cr();
628
629 st->print_cr("Register to memory mapping:");
630 st->cr();
631
632 // this is only for the "general purpose" registers
633
634 st->print_cr("O0=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O0]);
635 print_location(st, uc->uc_mcontext.gregs[REG_O0]);
636 st->cr();
637 st->print_cr("O1=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O1]);
638 print_location(st, uc->uc_mcontext.gregs[REG_O1]);
639 st->cr();
640 st->print_cr("O2=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O2]);
641 print_location(st, uc->uc_mcontext.gregs[REG_O2]);
642 st->cr();
643 st->print_cr("O3=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O3]);
644 print_location(st, uc->uc_mcontext.gregs[REG_O3]);
645 st->cr();
646 st->print_cr("O4=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O4]);
647 print_location(st, uc->uc_mcontext.gregs[REG_O4]);
648 st->cr();
649 st->print_cr("O5=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O5]);
650 print_location(st, uc->uc_mcontext.gregs[REG_O5]);
651 st->cr();
652 st->print_cr("O6=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O6]);
653 print_location(st, uc->uc_mcontext.gregs[REG_O6]);
654 st->cr();
655 st->print_cr("O7=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_O7]);
656 print_location(st, uc->uc_mcontext.gregs[REG_O7]);
657 st->cr();
658
659 st->print_cr("G1=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G1]);
660 print_location(st, uc->uc_mcontext.gregs[REG_G1]);
661 st->cr();
662 st->print_cr("G2=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G2]);
663 print_location(st, uc->uc_mcontext.gregs[REG_G2]);
664 st->cr();
665 st->print_cr("G3=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G3]);
666 print_location(st, uc->uc_mcontext.gregs[REG_G3]);
667 st->cr();
668 st->print_cr("G4=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G4]);
669 print_location(st, uc->uc_mcontext.gregs[REG_G4]);
670 st->cr();
671 st->print_cr("G5=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G5]);
672 print_location(st, uc->uc_mcontext.gregs[REG_G5]);
673 st->cr();
674 st->print_cr("G6=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G6]);
675 print_location(st, uc->uc_mcontext.gregs[REG_G6]);
676 st->cr();
677 st->print_cr("G7=" INTPTR_FORMAT, uc->uc_mcontext.gregs[REG_G7]);
678 print_location(st, uc->uc_mcontext.gregs[REG_G7]);
679
680 st->cr();
681 st->cr();
682
683 intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc);
684 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp);
685 print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t));
686 st->cr();
687
688 // Note: it may be unsafe to inspect memory near pc. For example, pc may
689 // point to garbage if entry point in an nmethod is corrupted. Leave
690 // this at the end, and hope for the best.
691 ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc);
692 address pc = epc.pc();
693 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc);
694 print_hex_dump(st, pc - 16, pc + 16, sizeof(char));
695 }
696
697 void os::Solaris::init_thread_fpu_state(void) {
698 // Nothing needed on Sparc.
699 }
700
701 #if !defined(COMPILER2) && !defined(_LP64)
702
703 // These routines are the initial value of atomic_xchg_entry(),
704 // atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry()
705 // until initialization is complete.
706 // TODO - remove when the VM drops support for V8.
707
708 typedef jint xchg_func_t (jint, volatile jint*);
709 typedef jint cmpxchg_func_t (jint, volatile jint*, jint);
710 typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong);
711 typedef jint add_func_t (jint, volatile jint*);
712
713 jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) {
714 // try to use the stub:
715 xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry());
716
717 if (func != NULL) {
718 os::atomic_xchg_func = func;
719 return (*func)(exchange_value, dest);
720 }
721 assert(Threads::number_of_threads() == 0, "for bootstrap only");
722
723 jint old_value = *dest;
724 *dest = exchange_value;
725 return old_value;
726 }
727
728 jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) {
729 // try to use the stub:
730 cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry());
731
732 if (func != NULL) {
733 os::atomic_cmpxchg_func = func;
734 return (*func)(exchange_value, dest, compare_value);
735 }
736 assert(Threads::number_of_threads() == 0, "for bootstrap only");
737
738 jint old_value = *dest;
739 if (old_value == compare_value)
740 *dest = exchange_value;
741 return old_value;
742 }
743
744 jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) {
745 // try to use the stub:
746 cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry());
747
748 if (func != NULL) {
749 os::atomic_cmpxchg_long_func = func;
750 return (*func)(exchange_value, dest, compare_value);
751 }
752 assert(Threads::number_of_threads() == 0, "for bootstrap only");
753
754 jlong old_value = *dest;
755 if (old_value == compare_value)
756 *dest = exchange_value;
757 return old_value;
758 }
759
760 jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) {
761 // try to use the stub:
762 add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry());
763
764 if (func != NULL) {
765 os::atomic_add_func = func;
766 return (*func)(add_value, dest);
767 }
768 assert(Threads::number_of_threads() == 0, "for bootstrap only");
769
770 return (*dest) += add_value;
771 }
772
773 xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap;
774 cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap;
775 cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap;
776 add_func_t* os::atomic_add_func = os::atomic_add_bootstrap;
777
778 #endif // !_LP64 && !COMPILER2
779
780 #if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE)
781 // See file build/solaris/makefiles/$compiler.make
782 // For compiler1 the architecture is v8 and frps isn't present in v8
783 extern "C" void _mark_fpu_nosave() {
784 __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :);
785 }
786 #endif //defined(__sparc) && defined(COMPILER2)