hotspot/src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp
author dholmes
Fri, 04 Dec 2015 04:06:37 -0500
changeset 34633 2a6c7c7b30a7
parent 33105 294e48b4f704
child 34667 6b077f0ef25d
permissions -rw-r--r--
8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables Summary: Used compiled-based TLS when available. Additional contributions by Thomas Stufe (AIX) and Andrew Haley (Aarch64) Reviewed-by: stuefe, bdelsart, dcubed
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/*
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 * Copyright (c) 1997, 2015, Oracle and/or its affiliates. All rights reserved.
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 * Copyright 2012, 2014 SAP AG. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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// no precompiled headers
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#include "assembler_ppc.inline.hpp"
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#include "classfile/classLoader.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "classfile/vmSymbols.hpp"
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#include "code/icBuffer.hpp"
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#include "code/vtableStubs.hpp"
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#include "interpreter/interpreter.hpp"
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#include "jvm_aix.h"
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#include "memory/allocation.inline.hpp"
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#include "mutex_aix.inline.hpp"
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#include "nativeInst_ppc.hpp"
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#include "os_share_aix.hpp"
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#include "prims/jniFastGetField.hpp"
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#include "prims/jvm.h"
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#include "prims/jvm_misc.hpp"
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#include "runtime/arguments.hpp"
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#include "runtime/extendedPC.hpp"
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#include "runtime/frame.inline.hpp"
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#include "runtime/interfaceSupport.hpp"
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#include "runtime/java.hpp"
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#include "runtime/javaCalls.hpp"
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#include "runtime/mutexLocker.hpp"
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#include "runtime/osThread.hpp"
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#include "runtime/sharedRuntime.hpp"
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#include "runtime/stubRoutines.hpp"
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#include "runtime/thread.inline.hpp"
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#include "runtime/timer.hpp"
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#include "utilities/events.hpp"
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#include "utilities/vmError.hpp"
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#ifdef COMPILER1
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#include "c1/c1_Runtime1.hpp"
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#endif
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#ifdef COMPILER2
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#include "opto/runtime.hpp"
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#endif
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// put OS-includes here
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# include <ucontext.h>
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address os::current_stack_pointer() {
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  address csp;
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#if !defined(USE_XLC_BUILTINS)
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  // inline assembly for `mr regno(csp), R1_SP':
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  __asm__ __volatile__ ("mr %0, 1":"=r"(csp):);
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#else
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  csp = (address) __builtin_frame_address(0);
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#endif
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  return csp;
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}
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char* os::non_memory_address_word() {
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  // Must never look like an address returned by reserve_memory,
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  // even in its subfields (as defined by the CPU immediate fields,
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  // if the CPU splits constants across multiple instructions).
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  return (char*) -1;
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}
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// OS specific thread initialization
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//
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// Calculate and store the limits of the memory stack.
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void os::initialize_thread(Thread *thread) { }
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// Frame information (pc, sp, fp) retrieved via ucontext
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// always looks like a C-frame according to the frame
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// conventions in frame_ppc.hpp.
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address os::Aix::ucontext_get_pc(const ucontext_t * uc) {
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  return (address)uc->uc_mcontext.jmp_context.iar;
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}
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intptr_t* os::Aix::ucontext_get_sp(ucontext_t * uc) {
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  // gpr1 holds the stack pointer on aix
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  return (intptr_t*)uc->uc_mcontext.jmp_context.gpr[1/*REG_SP*/];
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}
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intptr_t* os::Aix::ucontext_get_fp(ucontext_t * uc) {
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  return NULL;
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}
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void os::Aix::ucontext_set_pc(ucontext_t* uc, address new_pc) {
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  uc->uc_mcontext.jmp_context.iar = (uint64_t) new_pc;
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}
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ExtendedPC os::fetch_frame_from_context(void* ucVoid,
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                                        intptr_t** ret_sp, intptr_t** ret_fp) {
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  ExtendedPC  epc;
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  ucontext_t* uc = (ucontext_t*)ucVoid;
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  if (uc != NULL) {
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    epc = ExtendedPC(os::Aix::ucontext_get_pc(uc));
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    if (ret_sp) *ret_sp = os::Aix::ucontext_get_sp(uc);
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    if (ret_fp) *ret_fp = os::Aix::ucontext_get_fp(uc);
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  } else {
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    // construct empty ExtendedPC for return value checking
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    epc = ExtendedPC(NULL);
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    if (ret_sp) *ret_sp = (intptr_t *)NULL;
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    if (ret_fp) *ret_fp = (intptr_t *)NULL;
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  }
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  return epc;
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}
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   133
frame os::fetch_frame_from_context(void* ucVoid) {
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   134
  intptr_t* sp;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   135
  intptr_t* fp;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   136
  ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   137
  // Avoid crash during crash if pc broken.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   138
  if (epc.pc()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   139
    frame fr(sp, epc.pc());
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   140
    return fr;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   141
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   142
  frame fr(sp);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   143
  return fr;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   144
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   145
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   146
frame os::get_sender_for_C_frame(frame* fr) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   147
  if (*fr->sp() == NULL) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   148
    // fr is the last C frame
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   149
    return frame(NULL, NULL);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   150
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   151
  return frame(fr->sender_sp(), fr->sender_pc());
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   152
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   153
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   154
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   155
frame os::current_frame() {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   156
  intptr_t* csp = (intptr_t*) *((intptr_t*) os::current_stack_pointer());
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   157
  // hack.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   158
  frame topframe(csp, (address)0x8);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   159
  // return sender of current topframe which hopefully has pc != NULL.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   160
  return os::get_sender_for_C_frame(&topframe);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   161
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   162
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   163
// Utility functions
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   164
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   165
extern "C" JNIEXPORT int
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   166
JVM_handle_aix_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   167
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   168
  ucontext_t* uc = (ucontext_t*) ucVoid;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   169
34633
2a6c7c7b30a7 8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
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parents: 33105
diff changeset
   170
  Thread* t = Thread::current_or_null_safe();
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   171
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   172
  SignalHandlerMark shm(t);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   173
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   174
  // Note: it's not uncommon that JNI code uses signal/sigset to install
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   175
  // then restore certain signal handler (e.g. to temporarily block SIGPIPE,
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   176
  // or have a SIGILL handler when detecting CPU type). When that happens,
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   177
  // JVM_handle_aix_signal() might be invoked with junk info/ucVoid. To
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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   178
  // avoid unnecessary crash when libjsig is not preloaded, try handle signals
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   179
  // that do not require siginfo/ucontext first.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   180
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   181
  if (sig == SIGPIPE) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff changeset
   182
    if (os::Aix::chained_handler(sig, info, ucVoid)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff changeset
   183
      return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff changeset
   184
    } else {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff changeset
   185
      if (PrintMiscellaneous && (WizardMode || Verbose)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   186
        warning("Ignoring SIGPIPE - see bug 4229104");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   187
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   188
      return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   189
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   190
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   191
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   192
  JavaThread* thread = NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   193
  VMThread* vmthread = NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   194
  if (os::Aix::signal_handlers_are_installed) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   195
    if (t != NULL) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   196
      if(t->is_Java_thread()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   197
        thread = (JavaThread*)t;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   198
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   199
      else if(t->is_VM_thread()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   200
        vmthread = (VMThread *)t;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   201
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   202
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   203
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   204
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   205
  // Decide if this trap can be handled by a stub.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   206
  address stub = NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   207
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   208
  // retrieve program counter
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   209
  address const pc = uc ? os::Aix::ucontext_get_pc(uc) : NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   210
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   211
  // retrieve crash address
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   212
  address const addr = info ? (const address) info->si_addr : NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   213
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   214
  // SafeFetch 32 handling:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   215
  // - make it work if _thread is null
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   216
  // - make it use the standard os::...::ucontext_get/set_pc APIs
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   217
  if (uc) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   218
    address const pc = os::Aix::ucontext_get_pc(uc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff changeset
   219
    if (pc && StubRoutines::is_safefetch_fault(pc)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   220
      os::Aix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc));
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   221
      return true;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   222
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   223
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   224
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   225
  // Handle SIGDANGER right away. AIX would raise SIGDANGER whenever available swap
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   226
  // space falls below 30%. This is only a chance for the process to gracefully abort.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   227
  // We can't hope to proceed after SIGDANGER since SIGKILL tailgates.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   228
  if (sig == SIGDANGER) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   229
    goto report_and_die;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   230
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   231
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   232
  if (info == NULL || uc == NULL || thread == NULL && vmthread == NULL) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   233
    goto run_chained_handler;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   234
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   235
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   236
  // If we are a java thread...
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   237
  if (thread != NULL) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   238
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   239
    // Handle ALL stack overflow variations here
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   240
    if (sig == SIGSEGV && (addr < thread->stack_base() &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   241
                           addr >= thread->stack_base() - thread->stack_size())) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   242
      // stack overflow
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   243
      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   244
      // If we are in a yellow zone and we are inside java, we disable the yellow zone and
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   245
      // throw a stack overflow exception.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   246
      // If we are in native code or VM C code, we report-and-die. The original coding tried
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   247
      // to continue with yellow zone disabled, but that doesn't buy us much and prevents
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   248
      // hs_err_pid files.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   249
      if (thread->in_stack_yellow_zone(addr)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   250
        thread->disable_stack_yellow_zone();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   251
        if (thread->thread_state() == _thread_in_Java) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   252
          // Throw a stack overflow exception.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   253
          // Guard pages will be reenabled while unwinding the stack.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   254
          stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   255
          goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   256
        } else {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   257
          // Thread was in the vm or native code. Return and try to finish.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   258
          return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   259
        }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   260
      } else if (thread->in_stack_red_zone(addr)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   261
        // Fatal red zone violation. Disable the guard pages and fall through
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   262
        // to handle_unexpected_exception way down below.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   263
        thread->disable_stack_red_zone();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   264
        tty->print_raw_cr("An irrecoverable stack overflow has occurred.");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   265
        goto report_and_die;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   266
      } else {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   267
        // This means a segv happened inside our stack, but not in
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   268
        // the guarded zone. I'd like to know when this happens,
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   269
        tty->print_raw_cr("SIGSEGV happened inside stack but outside yellow and red zone.");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   270
        goto report_and_die;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   271
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   272
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   273
    } // end handle SIGSEGV inside stack boundaries
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   274
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   275
    if (thread->thread_state() == _thread_in_Java) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   276
      // Java thread running in Java code
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   277
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   278
      // The following signals are used for communicating VM events:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   279
      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   280
      // SIGILL: the compiler generates illegal opcodes
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   281
      //   at places where it wishes to interrupt the VM:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   282
      //   Safepoints, Unreachable Code, Entry points of Zombie methods,
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   283
      //    This results in a SIGILL with (*pc) == inserted illegal instruction.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   284
      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   285
      //   (so, SIGILLs with a pc inside the zero page are real errors)
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   286
      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   287
      // SIGTRAP:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   288
      //   The ppc trap instruction raises a SIGTRAP and is very efficient if it
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   289
      //   does not trap. It is used for conditional branches that are expected
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   290
      //   to be never taken. These are:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   291
      //     - zombie methods
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   292
      //     - IC (inline cache) misses.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   293
      //     - null checks leading to UncommonTraps.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   294
      //     - range checks leading to Uncommon Traps.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   295
      //   On Aix, these are especially null checks, as the ImplicitNullCheck
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   296
      //   optimization works only in rare cases, as the page at address 0 is only
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   297
      //   write protected.      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   298
      //   Note: !UseSIGTRAP is used to prevent SIGTRAPS altogether, to facilitate debugging.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   299
      //
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   300
      // SIGSEGV:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   301
      //   used for safe point polling:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   302
      //     To notify all threads that they have to reach a safe point, safe point polling is used:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   303
      //     All threads poll a certain mapped memory page. Normally, this page has read access.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   304
      //     If the VM wants to inform the threads about impending safe points, it puts this
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   305
      //     page to read only ("poisens" the page), and the threads then reach a safe point.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   306
      //   used for null checks:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   307
      //     If the compiler finds a store it uses it for a null check. Unfortunately this
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   308
      //     happens rarely.  In heap based and disjoint base compressd oop modes also loads
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   309
      //     are used for null checks.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   310
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   311
      // A VM-related SIGILL may only occur if we are not in the zero page.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   312
      // On AIX, we get a SIGILL if we jump to 0x0 or to somewhere else
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   313
      // in the zero page, because it is filled with 0x0. We ignore
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   314
      // explicit SIGILLs in the zero page.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   315
      if (sig == SIGILL && (pc < (address) 0x200)) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   316
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   317
          tty->print_raw_cr("SIGILL happened inside zero page.");
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   318
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   319
        goto report_and_die;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   320
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   321
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   322
      // Handle signal from NativeJump::patch_verified_entry().
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   323
      if (( TrapBasedNotEntrantChecks && sig == SIGTRAP && nativeInstruction_at(pc)->is_sigtrap_zombie_not_entrant()) ||
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   324
          (!TrapBasedNotEntrantChecks && sig == SIGILL  && nativeInstruction_at(pc)->is_sigill_zombie_not_entrant())) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   325
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   326
          tty->print_cr("trap: zombie_not_entrant (%s)", (sig == SIGTRAP) ? "SIGTRAP" : "SIGILL");
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   327
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   328
        stub = SharedRuntime::get_handle_wrong_method_stub();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   329
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   330
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   331
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   332
      else if (sig == SIGSEGV && os::is_poll_address(addr)) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   333
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   334
          tty->print_cr("trap: safepoint_poll at " INTPTR_FORMAT " (SIGSEGV)", pc);
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   335
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   336
        stub = SharedRuntime::get_poll_stub(pc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   337
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   338
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   339
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   340
      // SIGTRAP-based ic miss check in compiled code.
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   341
      else if (sig == SIGTRAP && TrapBasedICMissChecks &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   342
               nativeInstruction_at(pc)->is_sigtrap_ic_miss_check()) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   343
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   344
          tty->print_cr("trap: ic_miss_check at " INTPTR_FORMAT " (SIGTRAP)", pc);
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   345
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   346
        stub = SharedRuntime::get_ic_miss_stub();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   347
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   348
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   349
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   350
      // SIGTRAP-based implicit null check in compiled code.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   351
      else if (sig == SIGTRAP && TrapBasedNullChecks &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   352
               nativeInstruction_at(pc)->is_sigtrap_null_check()) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   353
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   354
          tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGTRAP)", pc);
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   355
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   356
        stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   357
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   358
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   359
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   360
      // SIGSEGV-based implicit null check in compiled code.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   361
      else if (sig == SIGSEGV && ImplicitNullChecks &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   362
               CodeCache::contains((void*) pc) &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   363
               !MacroAssembler::needs_explicit_null_check((intptr_t) info->si_addr)) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   364
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   365
          tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGSEGV)", pc);
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   366
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   367
        stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   368
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   369
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   370
#ifdef COMPILER2
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   371
      // SIGTRAP-based implicit range check in compiled code.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   372
      else if (sig == SIGTRAP && TrapBasedRangeChecks &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   373
               nativeInstruction_at(pc)->is_sigtrap_range_check()) {
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   374
        if (TraceTraps) {
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   375
          tty->print_cr("trap: range_check at " INTPTR_FORMAT " (SIGTRAP)", pc);
22861
f5c393d456fc 8029940: PPC64 (part 122): C2 compiler port
goetz
parents: 22831
diff changeset
   376
        }
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   377
        stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   378
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   379
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   380
#endif
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   381
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   382
      else if (sig == SIGFPE /* && info->si_code == FPE_INTDIV */) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   383
        if (TraceTraps) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   384
          tty->print_raw_cr("Fix SIGFPE handler, trying divide by zero handler.");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   385
        }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   386
        stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   387
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   388
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   389
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   390
      else if (sig == SIGBUS) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   391
        // BugId 4454115: A read from a MappedByteBuffer can fault here if the
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   392
        // underlying file has been truncated. Do not crash the VM in such a case.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   393
        CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   394
        nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   395
        if (nm != NULL && nm->has_unsafe_access()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   396
          // We don't really need a stub here! Just set the pending exeption and
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   397
          // continue at the next instruction after the faulting read. Returning
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   398
          // garbage from this read is ok.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   399
          thread->set_pending_unsafe_access_error();
29573
2d800e5d575f 8074552: SafeFetch32 and SafeFetchN do not work in error handling
dholmes
parents: 28187
diff changeset
   400
          os::Aix::ucontext_set_pc(uc, pc + 4);
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   401
          return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   402
        }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   403
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   404
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   405
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   406
    else { // thread->thread_state() != _thread_in_Java
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   407
      // Detect CPU features. This is only done at the very start of the VM. Later, the
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   408
      // VM_Version::is_determine_features_test_running() flag should be false.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   409
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   410
      if (sig == SIGILL && VM_Version::is_determine_features_test_running()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   411
        // SIGILL must be caused by VM_Version::determine_features().
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   412
        *(int *)pc = 0; // patch instruction to 0 to indicate that it causes a SIGILL,
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   413
                        // flushing of icache is not necessary.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   414
        stub = pc + 4;  // continue with next instruction.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   415
        goto run_stub;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   416
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   417
      else if (thread->thread_state() == _thread_in_vm &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   418
               sig == SIGBUS && thread->doing_unsafe_access()) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   419
        // We don't really need a stub here! Just set the pending exeption and
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   420
        // continue at the next instruction after the faulting read. Returning
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   421
        // garbage from this read is ok.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   422
        thread->set_pending_unsafe_access_error();
29573
2d800e5d575f 8074552: SafeFetch32 and SafeFetchN do not work in error handling
dholmes
parents: 28187
diff changeset
   423
        os::Aix::ucontext_set_pc(uc, pc + 4);
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   424
        return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   425
      }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   426
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   427
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   428
    // Check to see if we caught the safepoint code in the
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   429
    // process of write protecting the memory serialization page.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   430
    // It write enables the page immediately after protecting it
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   431
    // so we can just return to retry the write.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   432
    if ((sig == SIGSEGV) &&
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   433
        os::is_memory_serialize_page(thread, addr)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   434
      // Synchronization problem in the pseudo memory barrier code (bug id 6546278)
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   435
      // Block current thread until the memory serialize page permission restored.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   436
      os::block_on_serialize_page_trap();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   437
      return true;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   438
    }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   439
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   440
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   441
run_stub:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   442
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   443
  // One of the above code blocks ininitalized the stub, so we want to
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   444
  // delegate control to that stub.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   445
  if (stub != NULL) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   446
    // Save all thread context in case we need to restore it.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   447
    if (thread != NULL) thread->set_saved_exception_pc(pc);
29573
2d800e5d575f 8074552: SafeFetch32 and SafeFetchN do not work in error handling
dholmes
parents: 28187
diff changeset
   448
    os::Aix::ucontext_set_pc(uc, stub);
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   449
    return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   450
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   451
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   452
run_chained_handler:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   453
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   454
  // signal-chaining
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   455
  if (os::Aix::chained_handler(sig, info, ucVoid)) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   456
    return 1;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   457
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   458
  if (!abort_if_unrecognized) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   459
    // caller wants another chance, so give it to him
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   460
    return 0;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   461
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   462
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   463
report_and_die:
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   464
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   465
  // Use sigthreadmask instead of sigprocmask on AIX and unmask current signal.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   466
  sigset_t newset;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   467
  sigemptyset(&newset);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   468
  sigaddset(&newset, sig);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   469
  sigthreadmask(SIG_UNBLOCK, &newset, NULL);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   470
33105
294e48b4f704 8080775: Better argument formatting for assert() and friends
david
parents: 32080
diff changeset
   471
  VMError::report_and_die(t, sig, pc, info, ucVoid);
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   472
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   473
  ShouldNotReachHere();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   474
  return 0;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   475
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   476
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   477
void os::Aix::init_thread_fpu_state(void) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   478
#if !defined(USE_XLC_BUILTINS)
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   479
  // Disable FP exceptions.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   480
  __asm__ __volatile__ ("mtfsfi 6,0");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   481
#else
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   482
  __mtfsfi(6, 0);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   483
#endif
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   484
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   485
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   486
////////////////////////////////////////////////////////////////////////////////
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   487
// thread stack
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   488
28187
fc19df82d6ee 8066964: ppc64: argument and return type profiling, fix problem with popframe
goetz
parents: 26582
diff changeset
   489
size_t os::Aix::min_stack_allowed = 128*K;
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   490
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   491
// return default stack size for thr_type
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   492
size_t os::Aix::default_stack_size(os::ThreadType thr_type) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   493
  // default stack size (compiler thread needs larger stack)
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   494
  // Notice that the setting for compiler threads here have no impact
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   495
  // because of the strange 'fallback logic' in os::create_thread().
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   496
  // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   497
  // specify a different stack size for compiler threads!
28187
fc19df82d6ee 8066964: ppc64: argument and return type profiling, fix problem with popframe
goetz
parents: 26582
diff changeset
   498
  size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
22831
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   499
  return s;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   500
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   501
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   502
size_t os::Aix::default_guard_size(os::ThreadType thr_type) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   503
  return 2 * page_size();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   504
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   505
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   506
/////////////////////////////////////////////////////////////////////////////
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   507
// helper functions for fatal error handler
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   508
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   509
void os::print_context(outputStream *st, void *context) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   510
  if (context == NULL) return;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   511
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   512
  ucontext_t* uc = (ucontext_t*)context;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   513
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   514
  st->print_cr("Registers:");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   515
  st->print("pc =" INTPTR_FORMAT "  ", uc->uc_mcontext.jmp_context.iar);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   516
  st->print("lr =" INTPTR_FORMAT "  ", uc->uc_mcontext.jmp_context.lr);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   517
  st->print("ctr=" INTPTR_FORMAT "  ", uc->uc_mcontext.jmp_context.ctr);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   518
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   519
  for (int i = 0; i < 32; i++) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   520
    st->print("r%-2d=" INTPTR_FORMAT "  ", i, uc->uc_mcontext.jmp_context.gpr[i]);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   521
    if (i % 3 == 2) st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   522
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   523
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   524
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   525
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   526
  intptr_t *sp = (intptr_t *)os::Aix::ucontext_get_sp(uc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   527
  st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   528
  print_hex_dump(st, (address)sp, (address)(sp + 128), sizeof(intptr_t));
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   529
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   530
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   531
  // Note: it may be unsafe to inspect memory near pc. For example, pc may
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   532
  // point to garbage if entry point in an nmethod is corrupted. Leave
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   533
  // this at the end, and hope for the best.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   534
  address pc = os::Aix::ucontext_get_pc(uc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   535
  st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   536
  print_hex_dump(st, pc - 64, pc + 64, /*instrsize=*/4);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   537
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   538
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   539
  // Try to decode the instructions.
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   540
  st->print_cr("Decoded instructions: (pc=" PTR_FORMAT ")", pc);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   541
  st->print("<TODO: PPC port - print_context>");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   542
  // TODO: PPC port Disassembler::decode(pc, 16, 16, st);
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   543
  st->cr();
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   544
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   545
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   546
void os::print_register_info(outputStream *st, void *context) {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   547
  if (context == NULL) return;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   548
  st->print("Not ported - print_register_info\n");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   549
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   550
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   551
extern "C" {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   552
  int SpinPause() {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   553
    return 0;
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   554
  }
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   555
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   556
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   557
#ifndef PRODUCT
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   558
void os::verify_stack_alignment() {
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   559
  assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment");
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   560
}
1e2ba1d62103 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff changeset
   561
#endif
26576
a9429d24d429 8050147: StoreLoad barrier interferes with stack usages
shade
parents: 23492
diff changeset
   562
26582
b17d77706e6f 8057780: Fix ppc build after "8050147: StoreLoad barrier interferes with stack usages
simonis
parents: 26576
diff changeset
   563
int os::extra_bang_size_in_bytes() {
26576
a9429d24d429 8050147: StoreLoad barrier interferes with stack usages
shade
parents: 23492
diff changeset
   564
  // PPC does not require the additional stack bang.
a9429d24d429 8050147: StoreLoad barrier interferes with stack usages
shade
parents: 23492
diff changeset
   565
  return 0;
a9429d24d429 8050147: StoreLoad barrier interferes with stack usages
shade
parents: 23492
diff changeset
   566
}