--- old/src/hotspot/os_cpu/solaris_sparc/os_solaris_sparc.cpp 2020-05-20 18:09:49.769397705 -0700 +++ /dev/null 2020-03-09 18:57:19.455001459 -0700 @@ -1,727 +0,0 @@ -/* - * Copyright (c) 1999, 2020, 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 "jvm.h" -#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 "memory/allocation.inline.hpp" -#include "nativeInst_sparc.hpp" -#include "os_share_solaris.hpp" -#include "prims/jniFastGetField.hpp" -#include "prims/jvm_misc.hpp" -#include "runtime/arguments.hpp" -#include "runtime/extendedPC.hpp" -#include "runtime/frame.inline.hpp" -#include "runtime/interfaceSupport.inline.hpp" -#include "runtime/java.hpp" -#include "runtime/javaCalls.hpp" -#include "runtime/mutexLocker.hpp" -#include "runtime/osThread.hpp" -#include "runtime/safepointMechanism.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 // needed first to avoid name collision for "std" with SC 5.0 - -// put OS-includes here -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include -# include - -# define _STRUCTURED_PROC 1 // this gets us the new structured proc interfaces of 5.6 & later -# include // see comment in - -#define MAX_PATH (2 * K) - -// Minimum usable stack sizes required to get to user code. Space for -// HotSpot guard pages is added later. -size_t os::Posix::_compiler_thread_min_stack_allowed = 104 * K; -size_t os::Posix::_java_thread_min_stack_allowed = 86 * K; -size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K; - -static void handle_unflushed_register_windows(gwindows_t *win) { - int restore_count = win->wbcnt; - int i; - - for(i=0; ispbuf[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 (!thread->is_in_full_stack_checked((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 (!thread->is_in_full_stack_checked(_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 { - // Returned frame will be the caller of the method that faults on the stack bang. - // Register window not yet rotated (happens at SAVE after stack bang), so there is no new - // frame to go with the faulting PC. Using caller SP that is still in SP, and caller PC - // that was written to O7 at call. - intptr_t* sp = os::Solaris::ucontext_get_sp(uc); - address pc = (address)uc->uc_mcontext.gregs[REG_O7]; - *fr = frame(sp, frame::unpatchable, pc); - - 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) { - return true; -} - -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::ThreadCrashProtection::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 == ASYNC_SIGNAL) { - if (thread || vmthread) { - OSThread::SR_handler(t, uc); - return true; - } else if (os::Solaris::chained_handler(sig, info, ucVoid)) { - return true; - } else { - // If ASYNC_SIGNAL 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 || - thread->thread_state() == _thread_in_native) { - if (sig == SIGBUS && thread->doing_unsafe_access()) { - if (UnsafeCopyMemory::contains_pc(pc)) { - npc = UnsafeCopyMemory::page_error_continue_pc(pc); - } - stub = SharedRuntime::handle_unsafe_access(thread, npc); - } - } - - 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 && SafepointMechanism::is_poll_address((address)info->si_addr)) { - 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); - CompiledMethod* nm = cb->as_compiled_method_or_null(); - bool is_unsafe_arraycopy = (thread->doing_unsafe_access() && UnsafeCopyMemory::contains_pc(pc)); - if ((nm != NULL && nm->has_unsafe_access()) || is_unsafe_arraycopy) { - if (is_unsafe_arraycopy) { - npc = UnsafeCopyMemory::page_error_continue_pc(pc); - } - stub = SharedRuntime::handle_unsafe_access(thread, npc); - } - } - - 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::uses_implicit_null_check(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_GetField 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; - } - } - } - - 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); - - 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(); - print_instructions(st, pc, sizeof(char)); - st->cr(); -} - -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. -} - -#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; -}