--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/os/posix/vmError_posix.cpp	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,166 @@
+/*
+ * Copyright (c) 2003, 2017, 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.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "memory/filemap.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/os.hpp"
+#include "runtime/thread.hpp"
+#include "utilities/vmError.hpp"
+
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <signal.h>
+
+#ifdef LINUX
+#include <sys/syscall.h>
+#include <unistd.h>
+#endif
+#ifdef SOLARIS
+#include <thread.h>
+#endif
+#ifdef AIX
+#include <unistd.h>
+#endif
+#ifdef BSD
+#include <sys/syscall.h>
+#include <unistd.h>
+#endif
+
+
+// handle all synchronous program error signals which may happen during error
+// reporting. They must be unblocked, caught, handled.
+
+static const int SIGNALS[] = { SIGSEGV, SIGBUS, SIGILL, SIGFPE, SIGTRAP }; // add more if needed
+static const int NUM_SIGNALS = sizeof(SIGNALS) / sizeof(int);
+
+// Space for our "saved" signal flags and handlers
+static int resettedSigflags[NUM_SIGNALS];
+static address resettedSighandler[NUM_SIGNALS];
+
+// Needed for cancelable steps.
+static volatile pthread_t reporter_thread_id;
+
+void VMError::reporting_started() {
+  // record pthread id of reporter thread.
+  reporter_thread_id = ::pthread_self();
+}
+
+void VMError::interrupt_reporting_thread() {
+  // We misuse SIGILL here, but it does not really matter. We need
+  //  a signal which is handled by crash_handler and not likely to
+  //  occurr during error reporting itself.
+  ::pthread_kill(reporter_thread_id, SIGILL);
+}
+
+static void save_signal(int idx, int sig)
+{
+  struct sigaction sa;
+  sigaction(sig, NULL, &sa);
+  resettedSigflags[idx]   = sa.sa_flags;
+  resettedSighandler[idx] = (sa.sa_flags & SA_SIGINFO)
+                              ? CAST_FROM_FN_PTR(address, sa.sa_sigaction)
+                              : CAST_FROM_FN_PTR(address, sa.sa_handler);
+}
+
+int VMError::get_resetted_sigflags(int sig) {
+  for (int i = 0; i < NUM_SIGNALS; i++) {
+    if (SIGNALS[i] == sig) {
+      return resettedSigflags[i];
+    }
+  }
+  return -1;
+}
+
+address VMError::get_resetted_sighandler(int sig) {
+  for (int i = 0; i < NUM_SIGNALS; i++) {
+    if (SIGNALS[i] == sig) {
+      return resettedSighandler[i];
+    }
+  }
+  return NULL;
+}
+
+static void crash_handler(int sig, siginfo_t* info, void* ucVoid) {
+  // unmask current signal
+  sigset_t newset;
+  sigemptyset(&newset);
+  sigaddset(&newset, sig);
+  // also unmask other synchronous signals
+  for (int i = 0; i < NUM_SIGNALS; i++) {
+    sigaddset(&newset, SIGNALS[i]);
+  }
+  os::Posix::unblock_thread_signal_mask(&newset);
+
+  // support safefetch faults in error handling
+  ucontext_t* const uc = (ucontext_t*) ucVoid;
+  address pc = (uc != NULL) ? os::Posix::ucontext_get_pc(uc) : NULL;
+
+  // Correct pc for SIGILL, SIGFPE (see JDK-8176872)
+  if (sig == SIGILL || sig == SIGFPE) {
+    pc = (address) info->si_addr;
+  }
+
+  if (uc && pc && StubRoutines::is_safefetch_fault(pc)) {
+    os::Posix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
+    return;
+  }
+
+  VMError::report_and_die(NULL, sig, pc, info, ucVoid);
+}
+
+void VMError::reset_signal_handlers() {
+  // install signal handlers for all synchronous program error signals
+  sigset_t newset;
+  sigemptyset(&newset);
+
+  for (int i = 0; i < NUM_SIGNALS; i++) {
+    save_signal(i, SIGNALS[i]);
+    os::signal(SIGNALS[i], CAST_FROM_FN_PTR(void *, crash_handler));
+    sigaddset(&newset, SIGNALS[i]);
+  }
+  os::Posix::unblock_thread_signal_mask(&newset);
+
+}
+
+// Write a hint to the stream in case siginfo relates to a segv/bus error
+// and the offending address points into CDS archive.
+void VMError::check_failing_cds_access(outputStream* st, const void* siginfo) {
+#if INCLUDE_CDS
+  if (siginfo && UseSharedSpaces) {
+    const siginfo_t* const si = (siginfo_t*)siginfo;
+    if (si->si_signo == SIGBUS || si->si_signo == SIGSEGV) {
+      const void* const fault_addr = si->si_addr;
+      if (fault_addr != NULL) {
+        FileMapInfo* const mapinfo = FileMapInfo::current_info();
+        if (mapinfo->is_in_shared_space(fault_addr)) {
+          st->print("Error accessing class data sharing archive. "
+            "Mapped file inaccessible during execution, possible disk/network problem.");
+        }
+      }
+    }
+  }
+#endif
+}
+