| /* |
| * Copyright (c) 1999, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| // no precompiled headers |
| #include "asm/macroAssembler.hpp" |
| #include "macroAssembler_sparc.hpp" |
| #include "classfile/classLoader.hpp" |
| #include "classfile/systemDictionary.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "code/codeCache.hpp" |
| #include "code/icBuffer.hpp" |
| #include "code/vtableStubs.hpp" |
| #include "interpreter/interpreter.hpp" |
| #include "jvm_solaris.h" |
| #include "memory/allocation.inline.hpp" |
| #include "mutex_solaris.inline.hpp" |
| #include "nativeInst_sparc.hpp" |
| #include "os_share_solaris.hpp" |
| #include "prims/jniFastGetField.hpp" |
| #include "prims/jvm.h" |
| #include "prims/jvm_misc.hpp" |
| #include "runtime/arguments.hpp" |
| #include "runtime/extendedPC.hpp" |
| #include "runtime/frame.inline.hpp" |
| #include "runtime/interfaceSupport.hpp" |
| #include "runtime/java.hpp" |
| #include "runtime/javaCalls.hpp" |
| #include "runtime/mutexLocker.hpp" |
| #include "runtime/osThread.hpp" |
| #include "runtime/sharedRuntime.hpp" |
| #include "runtime/stubRoutines.hpp" |
| #include "runtime/thread.inline.hpp" |
| #include "runtime/timer.hpp" |
| #include "utilities/events.hpp" |
| #include "utilities/vmError.hpp" |
| |
| # include <signal.h> // needed first to avoid name collision for "std" with SC 5.0 |
| |
| // put OS-includes here |
| # include <sys/types.h> |
| # include <sys/mman.h> |
| # include <pthread.h> |
| # include <errno.h> |
| # include <dlfcn.h> |
| # include <stdio.h> |
| # include <unistd.h> |
| # include <sys/resource.h> |
| # include <thread.h> |
| # include <sys/stat.h> |
| # include <sys/time.h> |
| # include <sys/filio.h> |
| # include <sys/utsname.h> |
| # include <sys/systeminfo.h> |
| # include <sys/socket.h> |
| # include <sys/lwp.h> |
| # include <pwd.h> |
| # include <poll.h> |
| # include <sys/lwp.h> |
| |
| # define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later |
| # include <sys/procfs.h> // see comment in <sys/procfs.h> |
| |
| #define MAX_PATH (2 * K) |
| |
| // Minimum stack size for the VM. It's easier to document a constant |
| // but it's different for x86 and sparc because the page sizes are different. |
| #ifdef _LP64 |
| size_t os::Solaris::min_stack_allowed = 128*K; |
| #else |
| size_t os::Solaris::min_stack_allowed = 96*K; |
| #endif |
| |
| int os::Solaris::max_register_window_saves_before_flushing() { |
| // We should detect this at run time. For now, filling |
| // in with a constant. |
| return 8; |
| } |
| |
| static void handle_unflushed_register_windows(gwindows_t *win) { |
| int restore_count = win->wbcnt; |
| int i; |
| |
| for(i=0; i<restore_count; i++) { |
| address sp = ((address)win->spbuf[i]) + STACK_BIAS; |
| address reg_win = (address)&win->wbuf[i]; |
| memcpy(sp,reg_win,sizeof(struct rwindow)); |
| } |
| } |
| |
| char* os::non_memory_address_word() { |
| // Must never look like an address returned by reserve_memory, |
| // even in its subfields (as defined by the CPU immediate fields, |
| // if the CPU splits constants across multiple instructions). |
| // On SPARC, 0 != %hi(any real address), because there is no |
| // allocation in the first 1Kb of the virtual address space. |
| return (char*) 0; |
| } |
| |
| // Validate a ucontext retrieved from walking a uc_link of a ucontext. |
| // There are issues with libthread giving out uc_links for different threads |
| // on the same uc_link chain and bad or circular links. |
| // |
| bool os::Solaris::valid_ucontext(Thread* thread, const ucontext_t* valid, const ucontext_t* suspect) { |
| if (valid >= suspect || |
| valid->uc_stack.ss_flags != suspect->uc_stack.ss_flags || |
| valid->uc_stack.ss_sp != suspect->uc_stack.ss_sp || |
| valid->uc_stack.ss_size != suspect->uc_stack.ss_size) { |
| DEBUG_ONLY(tty->print_cr("valid_ucontext: failed test 1");) |
| return false; |
| } |
| |
| if (thread->is_Java_thread()) { |
| if (!valid_stack_address(thread, (address)suspect)) { |
| DEBUG_ONLY(tty->print_cr("valid_ucontext: uc_link not in thread stack");) |
| return false; |
| } |
| address _sp = (address)((intptr_t)suspect->uc_mcontext.gregs[REG_SP] + STACK_BIAS); |
| if (!valid_stack_address(thread, _sp) || |
| !frame::is_valid_stack_pointer(((JavaThread*)thread)->base_of_stack_pointer(), (intptr_t*)_sp)) { |
| DEBUG_ONLY(tty->print_cr("valid_ucontext: stackpointer not in thread stack");) |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| // We will only follow one level of uc_link since there are libthread |
| // issues with ucontext linking and it is better to be safe and just |
| // let caller retry later. |
| const ucontext_t* os::Solaris::get_valid_uc_in_signal_handler(Thread *thread, |
| const ucontext_t *uc) { |
| |
| const ucontext_t *retuc = NULL; |
| |
| // Sometimes the topmost register windows are not properly flushed. |
| // i.e., if the kernel would have needed to take a page fault |
| if (uc != NULL && uc->uc_mcontext.gwins != NULL) { |
| ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); |
| } |
| |
| if (uc != NULL) { |
| if (uc->uc_link == NULL) { |
| // cannot validate without uc_link so accept current ucontext |
| retuc = uc; |
| } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { |
| // first ucontext is valid so try the next one |
| uc = uc->uc_link; |
| if (uc->uc_link == NULL) { |
| // cannot validate without uc_link so accept current ucontext |
| retuc = uc; |
| } else if (os::Solaris::valid_ucontext(thread, uc, uc->uc_link)) { |
| // the ucontext one level down is also valid so return it |
| retuc = uc; |
| } |
| } |
| } |
| return retuc; |
| } |
| |
| // Assumes ucontext is valid |
| ExtendedPC os::Solaris::ucontext_get_ExtendedPC(const ucontext_t *uc) { |
| address pc = (address)uc->uc_mcontext.gregs[REG_PC]; |
| // set npc to zero to avoid using it for safepoint, good for profiling only |
| return ExtendedPC(pc); |
| } |
| |
| void os::Solaris::ucontext_set_pc(ucontext_t* uc, address pc) { |
| uc->uc_mcontext.gregs [REG_PC] = (greg_t) pc; |
| uc->uc_mcontext.gregs [REG_nPC] = (greg_t) (pc + 4); |
| } |
| |
| // Assumes ucontext is valid |
| intptr_t* os::Solaris::ucontext_get_sp(const ucontext_t *uc) { |
| return (intptr_t*)((intptr_t)uc->uc_mcontext.gregs[REG_SP] + STACK_BIAS); |
| } |
| |
| // Solaris X86 only |
| intptr_t* os::Solaris::ucontext_get_fp(const ucontext_t *uc) { |
| ShouldNotReachHere(); |
| return NULL; |
| } |
| |
| address os::Solaris::ucontext_get_pc(const ucontext_t *uc) { |
| return (address) uc->uc_mcontext.gregs[REG_PC]; |
| } |
| |
| |
| // For Forte Analyzer AsyncGetCallTrace profiling support - thread |
| // is currently interrupted by SIGPROF. |
| // |
| // ret_fp parameter is only used by Solaris X86. |
| // |
| // The difference between this and os::fetch_frame_from_context() is that |
| // here we try to skip nested signal frames. |
| // This method is also used for stack overflow signal handling. |
| ExtendedPC os::Solaris::fetch_frame_from_ucontext(Thread* thread, |
| const ucontext_t* uc, intptr_t** ret_sp, intptr_t** ret_fp) { |
| |
| assert(thread != NULL, "just checking"); |
| assert(ret_sp != NULL, "just checking"); |
| assert(ret_fp == NULL, "just checking"); |
| |
| const ucontext_t *luc = os::Solaris::get_valid_uc_in_signal_handler(thread, uc); |
| |
| return os::fetch_frame_from_context(luc, ret_sp, ret_fp); |
| } |
| |
| |
| // ret_fp parameter is only used by Solaris X86. |
| ExtendedPC os::fetch_frame_from_context(const void* ucVoid, |
| intptr_t** ret_sp, intptr_t** ret_fp) { |
| |
| ExtendedPC epc; |
| const ucontext_t *uc = (const ucontext_t*)ucVoid; |
| |
| if (uc != NULL) { |
| epc = os::Solaris::ucontext_get_ExtendedPC(uc); |
| if (ret_sp) *ret_sp = os::Solaris::ucontext_get_sp(uc); |
| } else { |
| // construct empty ExtendedPC for return value checking |
| epc = ExtendedPC(NULL); |
| if (ret_sp) *ret_sp = (intptr_t *)NULL; |
| } |
| |
| return epc; |
| } |
| |
| frame os::fetch_frame_from_context(const void* ucVoid) { |
| intptr_t* sp; |
| intptr_t* fp; |
| ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); |
| return frame(sp, frame::unpatchable, epc.pc()); |
| } |
| |
| frame os::fetch_frame_from_ucontext(Thread* thread, void* ucVoid) { |
| intptr_t* sp; |
| ExtendedPC epc = os::Solaris::fetch_frame_from_ucontext(thread, (ucontext_t*)ucVoid, &sp, NULL); |
| return frame(sp, frame::unpatchable, epc.pc()); |
| } |
| |
| bool os::Solaris::get_frame_at_stack_banging_point(JavaThread* thread, ucontext_t* uc, frame* fr) { |
| address pc = (address) os::Solaris::ucontext_get_pc(uc); |
| if (Interpreter::contains(pc)) { |
| *fr = os::fetch_frame_from_ucontext(thread, uc); |
| if (!fr->is_first_java_frame()) { |
| assert(fr->safe_for_sender(thread), "Safety check"); |
| *fr = fr->java_sender(); |
| } |
| } else { |
| // more complex code with compiled code |
| assert(!Interpreter::contains(pc), "Interpreted methods should have been handled above"); |
| CodeBlob* cb = CodeCache::find_blob(pc); |
| if (cb == NULL || !cb->is_nmethod() || cb->is_frame_complete_at(pc)) { |
| // Not sure where the pc points to, fallback to default |
| // stack overflow handling |
| return false; |
| } else { |
| *fr = os::fetch_frame_from_ucontext(thread, uc); |
| *fr = frame(fr->sender_sp(), fr->sp()); |
| if (!fr->is_java_frame()) { |
| assert(fr->safe_for_sender(thread), "Safety check"); |
| *fr = fr->java_sender(); |
| } |
| } |
| } |
| assert(fr->is_java_frame(), "Safety check"); |
| return true; |
| } |
| |
| frame os::get_sender_for_C_frame(frame* fr) { |
| return frame(fr->sender_sp(), frame::unpatchable, fr->sender_pc()); |
| } |
| |
| // Returns an estimate of the current stack pointer. Result must be guaranteed to |
| // point into the calling threads stack, and be no lower than the current stack |
| // pointer. |
| address os::current_stack_pointer() { |
| volatile int dummy; |
| address sp = (address)&dummy + 8; // %%%% need to confirm if this is right |
| return sp; |
| } |
| |
| frame os::current_frame() { |
| intptr_t* sp = StubRoutines::Sparc::flush_callers_register_windows_func()(); |
| frame myframe(sp, frame::unpatchable, |
| CAST_FROM_FN_PTR(address, os::current_frame)); |
| if (os::is_first_C_frame(&myframe)) { |
| // stack is not walkable |
| return frame(NULL, NULL, false); |
| } else { |
| return os::get_sender_for_C_frame(&myframe); |
| } |
| } |
| |
| bool os::is_allocatable(size_t bytes) { |
| #ifdef _LP64 |
| return true; |
| #else |
| return (bytes <= (size_t)3835*M); |
| #endif |
| } |
| |
| extern "C" JNIEXPORT int |
| JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid, |
| int abort_if_unrecognized) { |
| ucontext_t* uc = (ucontext_t*) ucVoid; |
| |
| Thread* t = Thread::current_or_null_safe(); |
| |
| // Must do this before SignalHandlerMark, if crash protection installed we will longjmp away |
| // (no destructors can be run) |
| os::WatcherThreadCrashProtection::check_crash_protection(sig, t); |
| |
| SignalHandlerMark shm(t); |
| |
| if(sig == SIGPIPE || sig == SIGXFSZ) { |
| if (os::Solaris::chained_handler(sig, info, ucVoid)) { |
| return true; |
| } else { |
| // Ignoring SIGPIPE/SIGXFSZ - see bugs 4229104 or 6499219 |
| return true; |
| } |
| } |
| |
| JavaThread* thread = NULL; |
| VMThread* vmthread = NULL; |
| if (os::Solaris::signal_handlers_are_installed) { |
| if (t != NULL ){ |
| if(t->is_Java_thread()) { |
| thread = (JavaThread*)t; |
| } |
| else if(t->is_VM_thread()){ |
| vmthread = (VMThread *)t; |
| } |
| } |
| } |
| |
| if (sig == os::Solaris::SIGasync()) { |
| if (thread || vmthread) { |
| OSThread::SR_handler(t, uc); |
| return true; |
| } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { |
| return true; |
| } else { |
| // If os::Solaris::SIGasync not chained, and this is a non-vm and |
| // non-java thread |
| return true; |
| } |
| } |
| |
| if (info == NULL || info->si_code <= 0 || info->si_code == SI_NOINFO) { |
| // can't decode this kind of signal |
| info = NULL; |
| } else { |
| assert(sig == info->si_signo, "bad siginfo"); |
| } |
| |
| // decide if this trap can be handled by a stub |
| address stub = NULL; |
| |
| address pc = NULL; |
| address npc = NULL; |
| |
| //%note os_trap_1 |
| if (info != NULL && uc != NULL && thread != NULL) { |
| // factor me: getPCfromContext |
| pc = (address) uc->uc_mcontext.gregs[REG_PC]; |
| npc = (address) uc->uc_mcontext.gregs[REG_nPC]; |
| |
| // SafeFetch() support |
| if (StubRoutines::is_safefetch_fault(pc)) { |
| os::Solaris::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc)); |
| return 1; |
| } |
| |
| // Handle ALL stack overflow variations here |
| if (sig == SIGSEGV && info->si_code == SEGV_ACCERR) { |
| address addr = (address) info->si_addr; |
| if (thread->in_stack_yellow_reserved_zone(addr)) { |
| // Sometimes the register windows are not properly flushed. |
| if(uc->uc_mcontext.gwins != NULL) { |
| ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); |
| } |
| if (thread->thread_state() == _thread_in_Java) { |
| if (thread->in_stack_reserved_zone(addr)) { |
| frame fr; |
| if (os::Solaris::get_frame_at_stack_banging_point(thread, uc, &fr)) { |
| assert(fr.is_java_frame(), "Must be a Java frame"); |
| frame activation = SharedRuntime::look_for_reserved_stack_annotated_method(thread, fr); |
| if (activation.sp() != NULL) { |
| thread->disable_stack_reserved_zone(); |
| RegisterMap map(thread); |
| int frame_size = activation.frame_size(&map); |
| thread->set_reserved_stack_activation((address)(((address)activation.sp()) - STACK_BIAS)); |
| return true; |
| } |
| } |
| } |
| // Throw a stack overflow exception. Guard pages will be reenabled |
| // while unwinding the stack. |
| thread->disable_stack_yellow_reserved_zone(); |
| stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); |
| } else { |
| // Thread was in the vm or native code. Return and try to finish. |
| thread->disable_stack_yellow_reserved_zone(); |
| return true; |
| } |
| } else if (thread->in_stack_red_zone(addr)) { |
| // Fatal red zone violation. Disable the guard pages and fall through |
| // to handle_unexpected_exception way down below. |
| thread->disable_stack_red_zone(); |
| tty->print_raw_cr("An irrecoverable stack overflow has occurred."); |
| // Sometimes the register windows are not properly flushed. |
| if(uc->uc_mcontext.gwins != NULL) { |
| ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); |
| } |
| } |
| } |
| |
| |
| if (thread->thread_state() == _thread_in_vm) { |
| if (sig == SIGBUS && info->si_code == BUS_OBJERR && thread->doing_unsafe_access()) { |
| stub = StubRoutines::handler_for_unsafe_access(); |
| } |
| } |
| |
| else if (thread->thread_state() == _thread_in_Java) { |
| // Java thread running in Java code => find exception handler if any |
| // a fault inside compiled code, the interpreter, or a stub |
| |
| // Support Safepoint Polling |
| if ( sig == SIGSEGV && (address)info->si_addr == os::get_polling_page() ) { |
| stub = SharedRuntime::get_poll_stub(pc); |
| } |
| |
| // Not needed on x86 solaris because verify_oops doesn't generate |
| // SEGV/BUS like sparc does. |
| if ( (sig == SIGSEGV || sig == SIGBUS) |
| && pc >= MacroAssembler::_verify_oop_implicit_branch[0] |
| && pc < MacroAssembler::_verify_oop_implicit_branch[1] ) { |
| stub = MacroAssembler::_verify_oop_implicit_branch[2]; |
| warning("fixed up memory fault in +VerifyOops at address " INTPTR_FORMAT, info->si_addr); |
| } |
| |
| // This is not factored because on x86 solaris the patching for |
| // zombies does not generate a SEGV. |
| else if (sig == SIGSEGV && nativeInstruction_at(pc)->is_zombie()) { |
| // zombie method (ld [%g0],%o7 instruction) |
| stub = SharedRuntime::get_handle_wrong_method_stub(); |
| |
| // At the stub it needs to look like a call from the caller of this |
| // method (not a call from the segv site). |
| pc = (address)uc->uc_mcontext.gregs[REG_O7]; |
| } |
| else if (sig == SIGBUS && info->si_code == BUS_OBJERR) { |
| // BugId 4454115: A read from a MappedByteBuffer can fault |
| // here if the underlying file has been truncated. |
| // Do not crash the VM in such a case. |
| CodeBlob* cb = CodeCache::find_blob_unsafe(pc); |
| nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; |
| if (nm != NULL && nm->has_unsafe_access()) { |
| stub = StubRoutines::handler_for_unsafe_access(); |
| } |
| } |
| |
| else if (sig == SIGFPE && info->si_code == FPE_INTDIV) { |
| // integer divide by zero |
| stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); |
| } |
| else if (sig == SIGFPE && info->si_code == FPE_FLTDIV) { |
| // floating-point divide by zero |
| stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); |
| } |
| #ifdef COMPILER2 |
| else if (sig == SIGILL && nativeInstruction_at(pc)->is_ic_miss_trap()) { |
| #ifdef ASSERT |
| #ifdef TIERED |
| CodeBlob* cb = CodeCache::find_blob_unsafe(pc); |
| assert(cb->is_compiled_by_c2(), "Wrong compiler"); |
| #endif // TIERED |
| #endif // ASSERT |
| // Inline cache missed and user trap "Tne G0+ST_RESERVED_FOR_USER_0+2" taken. |
| stub = SharedRuntime::get_ic_miss_stub(); |
| // At the stub it needs to look like a call from the caller of this |
| // method (not a call from the segv site). |
| pc = (address)uc->uc_mcontext.gregs[REG_O7]; |
| } |
| #endif // COMPILER2 |
| |
| else if (sig == SIGSEGV && info->si_code > 0 && !MacroAssembler::needs_explicit_null_check((intptr_t)info->si_addr)) { |
| // Determination of interpreter/vtable stub/compiled code null exception |
| stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
| } |
| } |
| |
| // jni_fast_Get<Primitive>Field can trap at certain pc's if a GC kicks in |
| // and the heap gets shrunk before the field access. |
| if ((sig == SIGSEGV) || (sig == SIGBUS)) { |
| address addr = JNI_FastGetField::find_slowcase_pc(pc); |
| if (addr != (address)-1) { |
| stub = addr; |
| } |
| } |
| |
| // Check to see if we caught the safepoint code in the |
| // process of write protecting the memory serialization page. |
| // It write enables the page immediately after protecting it |
| // so just return. |
| if ((sig == SIGSEGV) && |
| os::is_memory_serialize_page(thread, (address)info->si_addr)) { |
| // Block current thread until the memory serialize page permission restored. |
| os::block_on_serialize_page_trap(); |
| return true; |
| } |
| } |
| |
| if (stub != NULL) { |
| // save all thread context in case we need to restore it |
| |
| thread->set_saved_exception_pc(pc); |
| thread->set_saved_exception_npc(npc); |
| |
| // simulate a branch to the stub (a "call" in the safepoint stub case) |
| // factor me: setPC |
| os::Solaris::ucontext_set_pc(uc, stub); |
| |
| #ifndef PRODUCT |
| if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__); |
| #endif /* PRODUCT */ |
| |
| return true; |
| } |
| |
| // signal-chaining |
| if (os::Solaris::chained_handler(sig, info, ucVoid)) { |
| return true; |
| } |
| |
| if (!abort_if_unrecognized) { |
| // caller wants another chance, so give it to him |
| return false; |
| } |
| |
| if (!os::Solaris::libjsig_is_loaded) { |
| struct sigaction oldAct; |
| sigaction(sig, (struct sigaction *)0, &oldAct); |
| if (oldAct.sa_sigaction != signalHandler) { |
| void* sighand = oldAct.sa_sigaction ? CAST_FROM_FN_PTR(void*, oldAct.sa_sigaction) |
| : CAST_FROM_FN_PTR(void*, oldAct.sa_handler); |
| warning("Unexpected Signal %d occurred under user-defined signal handler " INTPTR_FORMAT, sig, (intptr_t)sighand); |
| } |
| } |
| |
| if (pc == NULL && uc != NULL) { |
| pc = (address) uc->uc_mcontext.gregs[REG_PC]; |
| } |
| |
| // Sometimes the register windows are not properly flushed. |
| if(uc->uc_mcontext.gwins != NULL) { |
| ::handle_unflushed_register_windows(uc->uc_mcontext.gwins); |
| } |
| |
| // unmask current signal |
| sigset_t newset; |
| sigemptyset(&newset); |
| sigaddset(&newset, sig); |
| sigprocmask(SIG_UNBLOCK, &newset, NULL); |
| |
| // Determine which sort of error to throw. Out of swap may signal |
| // on the thread stack, which could get a mapping error when touched. |
| address addr = (address) info->si_addr; |
| if (sig == SIGBUS && info->si_code == BUS_OBJERR && info->si_errno == ENOMEM) { |
| vm_exit_out_of_memory(0, OOM_MMAP_ERROR, "Out of swap space to map in thread stack."); |
| } |
| |
| VMError::report_and_die(t, sig, pc, info, ucVoid); |
| |
| ShouldNotReachHere(); |
| return false; |
| } |
| |
| void os::print_context(outputStream *st, const void *context) { |
| if (context == NULL) return; |
| |
| const ucontext_t *uc = (const ucontext_t*)context; |
| st->print_cr("Registers:"); |
| |
| st->print_cr(" G1=" INTPTR_FORMAT " G2=" INTPTR_FORMAT |
| " G3=" INTPTR_FORMAT " G4=" INTPTR_FORMAT, |
| uc->uc_mcontext.gregs[REG_G1], |
| uc->uc_mcontext.gregs[REG_G2], |
| uc->uc_mcontext.gregs[REG_G3], |
| uc->uc_mcontext.gregs[REG_G4]); |
| st->print_cr(" G5=" INTPTR_FORMAT " G6=" INTPTR_FORMAT |
| " G7=" INTPTR_FORMAT " Y=" INTPTR_FORMAT, |
| uc->uc_mcontext.gregs[REG_G5], |
| uc->uc_mcontext.gregs[REG_G6], |
| uc->uc_mcontext.gregs[REG_G7], |
| uc->uc_mcontext.gregs[REG_Y]); |
| st->print_cr(" O0=" INTPTR_FORMAT " O1=" INTPTR_FORMAT |
| " O2=" INTPTR_FORMAT " O3=" INTPTR_FORMAT, |
| uc->uc_mcontext.gregs[REG_O0], |
| uc->uc_mcontext.gregs[REG_O1], |
| uc->uc_mcontext.gregs[REG_O2], |
| uc->uc_mcontext.gregs[REG_O3]); |
| st->print_cr(" O4=" INTPTR_FORMAT " O5=" INTPTR_FORMAT |
| " O6=" INTPTR_FORMAT " O7=" INTPTR_FORMAT, |
| uc->uc_mcontext.gregs[REG_O4], |
| uc->uc_mcontext.gregs[REG_O5], |
| uc->uc_mcontext.gregs[REG_O6], |
| uc->uc_mcontext.gregs[REG_O7]); |
| |
| |
| intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); |
| st->print_cr(" L0=" INTPTR_FORMAT " L1=" INTPTR_FORMAT |
| " L2=" INTPTR_FORMAT " L3=" INTPTR_FORMAT, |
| sp[L0->sp_offset_in_saved_window()], |
| sp[L1->sp_offset_in_saved_window()], |
| sp[L2->sp_offset_in_saved_window()], |
| sp[L3->sp_offset_in_saved_window()]); |
| st->print_cr(" L4=" INTPTR_FORMAT " L5=" INTPTR_FORMAT |
| " L6=" INTPTR_FORMAT " L7=" INTPTR_FORMAT, |
| sp[L4->sp_offset_in_saved_window()], |
| sp[L5->sp_offset_in_saved_window()], |
| sp[L6->sp_offset_in_saved_window()], |
| sp[L7->sp_offset_in_saved_window()]); |
| st->print_cr(" I0=" INTPTR_FORMAT " I1=" INTPTR_FORMAT |
| " I2=" INTPTR_FORMAT " I3=" INTPTR_FORMAT, |
| sp[I0->sp_offset_in_saved_window()], |
| sp[I1->sp_offset_in_saved_window()], |
| sp[I2->sp_offset_in_saved_window()], |
| sp[I3->sp_offset_in_saved_window()]); |
| st->print_cr(" I4=" INTPTR_FORMAT " I5=" INTPTR_FORMAT |
| " I6=" INTPTR_FORMAT " I7=" INTPTR_FORMAT, |
| sp[I4->sp_offset_in_saved_window()], |
| sp[I5->sp_offset_in_saved_window()], |
| sp[I6->sp_offset_in_saved_window()], |
| sp[I7->sp_offset_in_saved_window()]); |
| |
| st->print_cr(" PC=" INTPTR_FORMAT " nPC=" INTPTR_FORMAT, |
| uc->uc_mcontext.gregs[REG_PC], |
| uc->uc_mcontext.gregs[REG_nPC]); |
| st->cr(); |
| st->cr(); |
| |
| st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); |
| print_hex_dump(st, (address)sp, (address)(sp + 32), sizeof(intptr_t)); |
| st->cr(); |
| |
| // Note: it may be unsafe to inspect memory near pc. For example, pc may |
| // point to garbage if entry point in an nmethod is corrupted. Leave |
| // this at the end, and hope for the best. |
| ExtendedPC epc = os::Solaris::ucontext_get_ExtendedPC(uc); |
| address pc = epc.pc(); |
| st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); |
| print_hex_dump(st, pc - 32, pc + 32, sizeof(char)); |
| } |
| |
| void os::print_register_info(outputStream *st, const void *context) { |
| if (context == NULL) return; |
| |
| const ucontext_t *uc = (const ucontext_t*)context; |
| intptr_t *sp = (intptr_t *)os::Solaris::ucontext_get_sp(uc); |
| |
| st->print_cr("Register to memory mapping:"); |
| st->cr(); |
| |
| // this is only for the "general purpose" registers |
| st->print("G1="); print_location(st, uc->uc_mcontext.gregs[REG_G1]); |
| st->print("G2="); print_location(st, uc->uc_mcontext.gregs[REG_G2]); |
| st->print("G3="); print_location(st, uc->uc_mcontext.gregs[REG_G3]); |
| st->print("G4="); print_location(st, uc->uc_mcontext.gregs[REG_G4]); |
| st->print("G5="); print_location(st, uc->uc_mcontext.gregs[REG_G5]); |
| st->print("G6="); print_location(st, uc->uc_mcontext.gregs[REG_G6]); |
| st->print("G7="); print_location(st, uc->uc_mcontext.gregs[REG_G7]); |
| st->cr(); |
| |
| st->print("O0="); print_location(st, uc->uc_mcontext.gregs[REG_O0]); |
| st->print("O1="); print_location(st, uc->uc_mcontext.gregs[REG_O1]); |
| st->print("O2="); print_location(st, uc->uc_mcontext.gregs[REG_O2]); |
| st->print("O3="); print_location(st, uc->uc_mcontext.gregs[REG_O3]); |
| st->print("O4="); print_location(st, uc->uc_mcontext.gregs[REG_O4]); |
| st->print("O5="); print_location(st, uc->uc_mcontext.gregs[REG_O5]); |
| st->print("O6="); print_location(st, uc->uc_mcontext.gregs[REG_O6]); |
| st->print("O7="); print_location(st, uc->uc_mcontext.gregs[REG_O7]); |
| st->cr(); |
| |
| st->print("L0="); print_location(st, sp[L0->sp_offset_in_saved_window()]); |
| st->print("L1="); print_location(st, sp[L1->sp_offset_in_saved_window()]); |
| st->print("L2="); print_location(st, sp[L2->sp_offset_in_saved_window()]); |
| st->print("L3="); print_location(st, sp[L3->sp_offset_in_saved_window()]); |
| st->print("L4="); print_location(st, sp[L4->sp_offset_in_saved_window()]); |
| st->print("L5="); print_location(st, sp[L5->sp_offset_in_saved_window()]); |
| st->print("L6="); print_location(st, sp[L6->sp_offset_in_saved_window()]); |
| st->print("L7="); print_location(st, sp[L7->sp_offset_in_saved_window()]); |
| st->cr(); |
| |
| st->print("I0="); print_location(st, sp[I0->sp_offset_in_saved_window()]); |
| st->print("I1="); print_location(st, sp[I1->sp_offset_in_saved_window()]); |
| st->print("I2="); print_location(st, sp[I2->sp_offset_in_saved_window()]); |
| st->print("I3="); print_location(st, sp[I3->sp_offset_in_saved_window()]); |
| st->print("I4="); print_location(st, sp[I4->sp_offset_in_saved_window()]); |
| st->print("I5="); print_location(st, sp[I5->sp_offset_in_saved_window()]); |
| st->print("I6="); print_location(st, sp[I6->sp_offset_in_saved_window()]); |
| st->print("I7="); print_location(st, sp[I7->sp_offset_in_saved_window()]); |
| st->cr(); |
| } |
| |
| void os::Solaris::init_thread_fpu_state(void) { |
| // Nothing needed on Sparc. |
| } |
| |
| #if !defined(COMPILER2) && !defined(_LP64) |
| |
| // These routines are the initial value of atomic_xchg_entry(), |
| // atomic_cmpxchg_entry(), atomic_add_entry() and fence_entry() |
| // until initialization is complete. |
| // TODO - remove when the VM drops support for V8. |
| |
| typedef jint xchg_func_t (jint, volatile jint*); |
| typedef jint cmpxchg_func_t (jint, volatile jint*, jint); |
| typedef jlong cmpxchg_long_func_t(jlong, volatile jlong*, jlong); |
| typedef jint add_func_t (jint, volatile jint*); |
| |
| jint os::atomic_xchg_bootstrap(jint exchange_value, volatile jint* dest) { |
| // try to use the stub: |
| xchg_func_t* func = CAST_TO_FN_PTR(xchg_func_t*, StubRoutines::atomic_xchg_entry()); |
| |
| if (func != NULL) { |
| os::atomic_xchg_func = func; |
| return (*func)(exchange_value, dest); |
| } |
| assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
| |
| jint old_value = *dest; |
| *dest = exchange_value; |
| return old_value; |
| } |
| |
| jint os::atomic_cmpxchg_bootstrap(jint exchange_value, volatile jint* dest, jint compare_value) { |
| // try to use the stub: |
| cmpxchg_func_t* func = CAST_TO_FN_PTR(cmpxchg_func_t*, StubRoutines::atomic_cmpxchg_entry()); |
| |
| if (func != NULL) { |
| os::atomic_cmpxchg_func = func; |
| return (*func)(exchange_value, dest, compare_value); |
| } |
| assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
| |
| jint old_value = *dest; |
| if (old_value == compare_value) |
| *dest = exchange_value; |
| return old_value; |
| } |
| |
| jlong os::atomic_cmpxchg_long_bootstrap(jlong exchange_value, volatile jlong* dest, jlong compare_value) { |
| // try to use the stub: |
| cmpxchg_long_func_t* func = CAST_TO_FN_PTR(cmpxchg_long_func_t*, StubRoutines::atomic_cmpxchg_long_entry()); |
| |
| if (func != NULL) { |
| os::atomic_cmpxchg_long_func = func; |
| return (*func)(exchange_value, dest, compare_value); |
| } |
| assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
| |
| jlong old_value = *dest; |
| if (old_value == compare_value) |
| *dest = exchange_value; |
| return old_value; |
| } |
| |
| jint os::atomic_add_bootstrap(jint add_value, volatile jint* dest) { |
| // try to use the stub: |
| add_func_t* func = CAST_TO_FN_PTR(add_func_t*, StubRoutines::atomic_add_entry()); |
| |
| if (func != NULL) { |
| os::atomic_add_func = func; |
| return (*func)(add_value, dest); |
| } |
| assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
| |
| return (*dest) += add_value; |
| } |
| |
| xchg_func_t* os::atomic_xchg_func = os::atomic_xchg_bootstrap; |
| cmpxchg_func_t* os::atomic_cmpxchg_func = os::atomic_cmpxchg_bootstrap; |
| cmpxchg_long_func_t* os::atomic_cmpxchg_long_func = os::atomic_cmpxchg_long_bootstrap; |
| add_func_t* os::atomic_add_func = os::atomic_add_bootstrap; |
| |
| #endif // !_LP64 && !COMPILER2 |
| |
| #if defined(__sparc) && defined(COMPILER2) && defined(_GNU_SOURCE) |
| // See file build/solaris/makefiles/$compiler.make |
| // For compiler1 the architecture is v8 and frps isn't present in v8 |
| extern "C" void _mark_fpu_nosave() { |
| __asm__ __volatile__ ("wr %%g0, 0, %%fprs \n\t" : : :); |
| } |
| #endif //defined(__sparc) && defined(COMPILER2) |
| |
| #ifndef PRODUCT |
| void os::verify_stack_alignment() { |
| } |
| #endif |
| |
| int os::extra_bang_size_in_bytes() { |
| // SPARC does not require an additional stack bang. |
| return 0; |
| } |