author | dholmes |
Fri, 04 Dec 2015 04:06:37 -0500 | |
changeset 34633 | 2a6c7c7b30a7 |
parent 33105 | 294e48b4f704 |
child 34667 | 6b077f0ef25d |
permissions | -rw-r--r-- |
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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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|
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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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|
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// put OS-includes here |
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# include <ucontext.h> |
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|
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address os::current_stack_pointer() { |
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address csp; |
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|
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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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|
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return csp; |
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} |
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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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|
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return (char*) -1; |
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} |
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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ExtendedPC epc; |
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ucontext_t* uc = (ucontext_t*)ucVoid; |
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|
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if (uc != NULL) { |
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epc = ExtendedPC(os::Aix::ucontext_get_pc(uc)); |
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121 |
if (ret_sp) *ret_sp = os::Aix::ucontext_get_sp(uc); |
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|
122 |
if (ret_fp) *ret_fp = os::Aix::ucontext_get_fp(uc); |
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|
123 |
} else { |
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|
124 |
// construct empty ExtendedPC for return value checking |
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|
125 |
epc = ExtendedPC(NULL); |
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|
126 |
if (ret_sp) *ret_sp = (intptr_t *)NULL; |
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127 |
if (ret_fp) *ret_fp = (intptr_t *)NULL; |
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|
128 |
} |
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|
129 |
|
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130 |
return epc; |
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|
131 |
} |
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|
132 |
|
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133 |
frame os::fetch_frame_from_context(void* ucVoid) { |
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134 |
intptr_t* sp; |
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|
135 |
intptr_t* fp; |
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136 |
ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); |
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|
137 |
// Avoid crash during crash if pc broken. |
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|
138 |
if (epc.pc()) { |
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|
139 |
frame fr(sp, epc.pc()); |
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|
140 |
return fr; |
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|
141 |
} |
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|
142 |
frame fr(sp); |
1e2ba1d62103
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|
143 |
return fr; |
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|
144 |
} |
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|
145 |
|
1e2ba1d62103
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|
146 |
frame os::get_sender_for_C_frame(frame* fr) { |
1e2ba1d62103
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|
147 |
if (*fr->sp() == NULL) { |
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|
148 |
// fr is the last C frame |
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|
149 |
return frame(NULL, NULL); |
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|
150 |
} |
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|
151 |
return frame(fr->sender_sp(), fr->sender_pc()); |
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|
152 |
} |
1e2ba1d62103
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|
153 |
|
1e2ba1d62103
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|
154 |
|
1e2ba1d62103
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|
155 |
frame os::current_frame() { |
1e2ba1d62103
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|
156 |
intptr_t* csp = (intptr_t*) *((intptr_t*) os::current_stack_pointer()); |
1e2ba1d62103
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|
157 |
// hack. |
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|
158 |
frame topframe(csp, (address)0x8); |
1e2ba1d62103
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|
159 |
// return sender of current topframe which hopefully has pc != NULL. |
1e2ba1d62103
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|
160 |
return os::get_sender_for_C_frame(&topframe); |
1e2ba1d62103
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|
161 |
} |
1e2ba1d62103
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|
162 |
|
1e2ba1d62103
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|
163 |
// Utility functions |
1e2ba1d62103
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|
164 |
|
1e2ba1d62103
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|
165 |
extern "C" JNIEXPORT int |
1e2ba1d62103
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|
166 |
JVM_handle_aix_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) { |
1e2ba1d62103
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|
167 |
|
1e2ba1d62103
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|
168 |
ucontext_t* uc = (ucontext_t*) ucVoid; |
1e2ba1d62103
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|
169 |
|
34633
2a6c7c7b30a7
8132510: Replace ThreadLocalStorage with compiler/language-based thread-local variables
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|
170 |
Thread* t = Thread::current_or_null_safe(); |
22831
1e2ba1d62103
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|
171 |
|
1e2ba1d62103
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|
172 |
SignalHandlerMark shm(t); |
1e2ba1d62103
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|
173 |
|
1e2ba1d62103
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|
174 |
// Note: it's not uncommon that JNI code uses signal/sigset to install |
1e2ba1d62103
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|
175 |
// then restore certain signal handler (e.g. to temporarily block SIGPIPE, |
1e2ba1d62103
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|
176 |
// or have a SIGILL handler when detecting CPU type). When that happens, |
1e2ba1d62103
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|
177 |
// JVM_handle_aix_signal() might be invoked with junk info/ucVoid. To |
1e2ba1d62103
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|
178 |
// avoid unnecessary crash when libjsig is not preloaded, try handle signals |
1e2ba1d62103
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|
179 |
// that do not require siginfo/ucontext first. |
1e2ba1d62103
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|
180 |
|
1e2ba1d62103
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diff
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|
181 |
if (sig == SIGPIPE) { |
1e2ba1d62103
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diff
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|
182 |
if (os::Aix::chained_handler(sig, info, ucVoid)) { |
1e2ba1d62103
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diff
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|
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
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diff
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|
186 |
warning("Ignoring SIGPIPE - see bug 4229104"); |
1e2ba1d62103
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diff
changeset
|
187 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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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
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parents:
diff
changeset
|
192 |
JavaThread* thread = NULL; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
193 |
VMThread* vmthread = NULL; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
changeset
|
194 |
if (os::Aix::signal_handlers_are_installed) { |
1e2ba1d62103
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diff
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|
195 |
if (t != NULL) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
196 |
if(t->is_Java_thread()) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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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
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parents:
diff
changeset
|
199 |
else if(t->is_VM_thread()) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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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
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diff
changeset
|
215 |
// - make it work if _thread is null |
1e2ba1d62103
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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
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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
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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
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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
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diff
changeset
|
228 |
if (sig == SIGDANGER) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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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
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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
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parents:
diff
changeset
|
236 |
// If we are a java thread... |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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diff
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|
242 |
// stack overflow |
1e2ba1d62103
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parents:
diff
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|
243 |
// |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
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
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diff
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|
245 |
// throw a stack overflow exception. |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
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|
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
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diff
changeset
|
247 |
// to continue with yellow zone disabled, but that doesn't buy us much and prevents |
1e2ba1d62103
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simonis
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diff
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|
248 |
// hs_err_pid files. |
1e2ba1d62103
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diff
changeset
|
249 |
if (thread->in_stack_yellow_zone(addr)) { |
1e2ba1d62103
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diff
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|
250 |
thread->disable_stack_yellow_zone(); |
1e2ba1d62103
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diff
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|
251 |
if (thread->thread_state() == _thread_in_Java) { |
1e2ba1d62103
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diff
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|
252 |
// Throw a stack overflow exception. |
1e2ba1d62103
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diff
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|
253 |
// Guard pages will be reenabled while unwinding the stack. |
1e2ba1d62103
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diff
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|
254 |
stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); |
1e2ba1d62103
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parents:
diff
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|
255 |
goto run_stub; |
1e2ba1d62103
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simonis
parents:
diff
changeset
|
256 |
} else { |
1e2ba1d62103
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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
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diff
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|
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
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parents:
diff
changeset
|
260 |
} else if (thread->in_stack_red_zone(addr)) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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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
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diff
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|
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 | 267 |
// This means a segv happened inside our stack, but not in |
22831
1e2ba1d62103
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diff
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|
268 |
// the guarded zone. I'd like to know when this happens, |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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diff
changeset
|
273 |
} // end handle SIGSEGV inside stack boundaries |
1e2ba1d62103
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simonis
parents:
diff
changeset
|
274 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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parents:
diff
changeset
|
275 |
if (thread->thread_state() == _thread_in_Java) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
276 |
// Java thread running in Java code |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff
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|
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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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 | 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
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|
487 |
// thread stack |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
488 |
|
28187
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489 |
size_t os::Aix::min_stack_allowed = 128*K; |
22831
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
490 |
|
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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491 |
// return default stack size for thr_type |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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492 |
size_t os::Aix::default_stack_size(os::ThreadType thr_type) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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493 |
// default stack size (compiler thread needs larger stack) |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
494 |
// Notice that the setting for compiler threads here have no impact |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
495 |
// because of the strange 'fallback logic' in os::create_thread(). |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
496 |
// Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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497 |
// specify a different stack size for compiler threads! |
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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
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499 |
return s; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
500 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
501 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
502 |
size_t os::Aix::default_guard_size(os::ThreadType thr_type) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
503 |
return 2 * page_size(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
504 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
505 |
|
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
506 |
///////////////////////////////////////////////////////////////////////////// |
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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507 |
// helper functions for fatal error handler |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
508 |
|
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
509 |
void os::print_context(outputStream *st, void *context) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
510 |
if (context == NULL) return; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
511 |
|
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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512 |
ucontext_t* uc = (ucontext_t*)context; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
513 |
|
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8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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514 |
st->print_cr("Registers:"); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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515 |
st->print("pc =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.iar); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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516 |
st->print("lr =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.lr); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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517 |
st->print("ctr=" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.ctr); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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518 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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519 |
for (int i = 0; i < 32; i++) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
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
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|
521 |
if (i % 3 == 2) st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
522 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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523 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
524 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
525 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
526 |
intptr_t *sp = (intptr_t *)os::Aix::ucontext_get_sp(uc); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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527 |
st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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528 |
print_hex_dump(st, (address)sp, (address)(sp + 128), sizeof(intptr_t)); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
529 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
530 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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|
532 |
// point to garbage if entry point in an nmethod is corrupted. Leave |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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533 |
// this at the end, and hope for the best. |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
534 |
address pc = os::Aix::ucontext_get_pc(uc); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
535 |
st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
536 |
print_hex_dump(st, pc - 64, pc + 64, /*instrsize=*/4); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
537 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff
changeset
|
538 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
539 |
// Try to decode the instructions. |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
540 |
st->print_cr("Decoded instructions: (pc=" PTR_FORMAT ")", pc); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
541 |
st->print("<TODO: PPC port - print_context>"); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
542 |
// TODO: PPC port Disassembler::decode(pc, 16, 16, st); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
543 |
st->cr(); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
544 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff
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|
545 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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|
546 |
void os::print_register_info(outputStream *st, void *context) { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff
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|
547 |
if (context == NULL) return; |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
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diff
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|
548 |
st->print("Not ported - print_register_info\n"); |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
549 |
} |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
changeset
|
550 |
|
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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|
551 |
extern "C" { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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diff
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|
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
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diff
changeset
|
557 |
#ifndef PRODUCT |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
simonis
parents:
diff
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|
558 |
void os::verify_stack_alignment() { |
1e2ba1d62103
8023038: PPC64 (part 15): Platform files for AIX/PPC64 support
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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
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parents:
diff
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|
561 |
#endif |
26576
a9429d24d429
8050147: StoreLoad barrier interferes with stack usages
shade
parents:
23492
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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
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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 |
} |