truffle: src/os_cpu/aix_ppc/vm/os_aix

annotate src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp @ 20710:c5e86c5cd22e

8066964: ppc64: argument and return type profiling, fix problem with popframe Reviewed-by: roland, kvn

author	goetz
date	Fri, 12 Dec 2014 08:48:56 +0100
parents	71a71b0bc844
children

rev	line source
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1 /*
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
17807 71a71b0bc844 8037915: PPC64/AIX: Several smaller fixes goetz parents: 14445 diff changeset	3 * Copyright 2012, 2014 SAP AG. All rights reserved.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	5 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	6 * This code is free software; you can redistribute it and/or modify it
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	7 * under the terms of the GNU General Public License version 2 only, as
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	8 * published by the Free Software Foundation.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	9 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	10 * This code is distributed in the hope that it will be useful, but WITHOUT
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	13 * version 2 for more details (a copy is included in the LICENSE file that
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	14 * accompanied this code).
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	15 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	16 * You should have received a copy of the GNU General Public License version
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	17 * 2 along with this work; if not, write to the Free Software Foundation,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	19 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	21 * or visit www.oracle.com if you need additional information or have any
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	22 * questions.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	23 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	24 */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	25
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	26 // no precompiled headers
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	27 #include "assembler_ppc.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	28 #include "classfile/classLoader.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	29 #include "classfile/systemDictionary.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	30 #include "classfile/vmSymbols.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	31 #include "code/icBuffer.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	32 #include "code/vtableStubs.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	33 #include "interpreter/interpreter.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	34 #include "jvm_aix.h"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	35 #include "memory/allocation.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	36 #include "mutex_aix.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	37 #include "nativeInst_ppc.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	38 #include "os_share_aix.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	39 #include "prims/jniFastGetField.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	40 #include "prims/jvm.h"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	41 #include "prims/jvm_misc.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	42 #include "runtime/arguments.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	43 #include "runtime/extendedPC.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	44 #include "runtime/frame.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	45 #include "runtime/interfaceSupport.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	46 #include "runtime/java.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	47 #include "runtime/javaCalls.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	48 #include "runtime/mutexLocker.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	49 #include "runtime/osThread.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	50 #include "runtime/sharedRuntime.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	51 #include "runtime/stubRoutines.hpp"
17807 71a71b0bc844 8037915: PPC64/AIX: Several smaller fixes goetz parents: 14445 diff changeset	52 #include "runtime/thread.inline.hpp"
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	53 #include "runtime/timer.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	54 #include "utilities/events.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	55 #include "utilities/vmError.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	56 #ifdef COMPILER1
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	57 #include "c1/c1_Runtime1.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	58 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	59 #ifdef COMPILER2
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	60 #include "opto/runtime.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	61 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	62
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	63 // put OS-includes here
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	64 # include <ucontext.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	65
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	66 address os::current_stack_pointer() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	67 address csp;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	68
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	69 #if !defined(USE_XLC_BUILTINS)
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	70 // inline assembly for `mr regno(csp), R1_SP':
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	71 __asm__ __volatile__ ("mr %0, 1":"=r"(csp):);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	72 #else
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	73 csp = (address) __builtin_frame_address(0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	74 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	75
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	76 return csp;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	77 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	78
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	79 char* os::non_memory_address_word() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	80 // Must never look like an address returned by reserve_memory,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	81 // even in its subfields (as defined by the CPU immediate fields,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	82 // if the CPU splits constants across multiple instructions).
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	83
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	84 return (char*) -1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	85 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	86
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	87 // OS specific thread initialization
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	88 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	89 // Calculate and store the limits of the memory stack.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	90 void os::initialize_thread(Thread *thread) { }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	91
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	92 // Frame information (pc, sp, fp) retrieved via ucontext
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	93 // always looks like a C-frame according to the frame
20710 c5e86c5cd22e 8066964: ppc64: argument and return type profiling, fix problem with popframe goetz parents: 17807 diff changeset	94 // conventions in frame_ppc.hpp.
c5e86c5cd22e 8066964: ppc64: argument and return type profiling, fix problem with popframe goetz parents: 17807 diff changeset	95
c5e86c5cd22e 8066964: ppc64: argument and return type profiling, fix problem with popframe goetz parents: 17807 diff changeset	96 address os::Aix::ucontext_get_pc(const ucontext_t * uc) {
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	97 return (address)uc->uc_mcontext.jmp_context.iar;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	98 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	99
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	100 intptr_t* os::Aix::ucontext_get_sp(ucontext_t * uc) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	101 // gpr1 holds the stack pointer on aix
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	102 return (intptr_t)uc->uc_mcontext.jmp_context.gpr[1/REG_SP*/];
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	103 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	104
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	105 intptr_t* os::Aix::ucontext_get_fp(ucontext_t * uc) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	106 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	107 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	108
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	109 void os::Aix::ucontext_set_pc(ucontext_t* uc, address new_pc) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	110 uc->uc_mcontext.jmp_context.iar = (uint64_t) new_pc;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	111 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	112
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	113 ExtendedPC os::fetch_frame_from_context(void* ucVoid,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	114 intptr_t ret_sp, intptr_t ret_fp) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	115
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	116 ExtendedPC epc;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	117 ucontext_t* uc = (ucontext_t*)ucVoid;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	118
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	119 if (uc != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	120 epc = ExtendedPC(os::Aix::ucontext_get_pc(uc));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	121 if (ret_sp) *ret_sp = os::Aix::ucontext_get_sp(uc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	122 if (ret_fp) *ret_fp = os::Aix::ucontext_get_fp(uc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	123 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	124 // construct empty ExtendedPC for return value checking
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	125 epc = ExtendedPC(NULL);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	126 if (ret_sp) ret_sp = (intptr_t )NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	127 if (ret_fp) ret_fp = (intptr_t )NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	128 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	129
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	130 return epc;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	131 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	132
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	133 frame os::fetch_frame_from_context(void* ucVoid) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	134 intptr_t* sp;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	135 intptr_t* fp;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	136 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	137 // Avoid crash during crash if pc broken.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	138 if (epc.pc()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	139 frame fr(sp, epc.pc());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	140 return fr;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	141 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	142 frame fr(sp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	143 return fr;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	144 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	145
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	146 frame os::get_sender_for_C_frame(frame* fr) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	147 if (*fr->sp() == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	148 // fr is the last C frame
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	149 return frame(NULL, NULL);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	150 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	151 return frame(fr->sender_sp(), fr->sender_pc());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	152 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	153
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	154
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	155 frame os::current_frame() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	156 intptr_t* csp = (intptr_t) ((intptr_t*) os::current_stack_pointer());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	157 // hack.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	158 frame topframe(csp, (address)0x8);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	159 // return sender of current topframe which hopefully has pc != NULL.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	160 return os::get_sender_for_C_frame(&topframe);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	161 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	162
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	163 // Utility functions
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	164
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	165 extern "C" JNIEXPORT int
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	166 JVM_handle_aix_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	167
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	168 ucontext_t* uc = (ucontext_t*) ucVoid;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	169
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	170 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	171
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	172 SignalHandlerMark shm(t);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	173
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	174 // Note: it's not uncommon that JNI code uses signal/sigset to install
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	175 // then restore certain signal handler (e.g. to temporarily block SIGPIPE,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	176 // or have a SIGILL handler when detecting CPU type). When that happens,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	177 // JVM_handle_aix_signal() might be invoked with junk info/ucVoid. To
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	178 // avoid unnecessary crash when libjsig is not preloaded, try handle signals
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	179 // that do not require siginfo/ucontext first.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	180
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	181 if (sig == SIGPIPE) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	182 if (os::Aix::chained_handler(sig, info, ucVoid)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	183 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	184 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	185 if (PrintMiscellaneous && (WizardMode \|\| Verbose)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	186 warning("Ignoring SIGPIPE - see bug 4229104");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	187 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	188 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	189 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	190 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	191
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	192 JavaThread* thread = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	193 VMThread* vmthread = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	194 if (os::Aix::signal_handlers_are_installed) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	195 if (t != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	196 if(t->is_Java_thread()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	197 thread = (JavaThread*)t;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	198 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	199 else if(t->is_VM_thread()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	200 vmthread = (VMThread *)t;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	201 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	202 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	203 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	204
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	206 address stub = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	207
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	208 // retrieve program counter
666e6ce3976c 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;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	210
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	211 // retrieve crash address
666e6ce3976c 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;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	213
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	214 // SafeFetch 32 handling:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	215 // - make it work if _thread is null
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	217 if (uc) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	218 address const pc = os::Aix::ucontext_get_pc(uc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	219 if (pc && StubRoutines::is_safefetch_fault(pc)) {
666e6ce3976c 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));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	221 return true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	222 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	223 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	224
666e6ce3976c 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
666e6ce3976c 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.
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	228 if (sig == SIGDANGER) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	229 goto report_and_die;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	230 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	231
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	232 if (info == NULL \|\| uc == NULL \|\| thread == NULL && vmthread == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	233 goto run_chained_handler;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	234 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	235
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	236 // If we are a java thread...
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	237 if (thread != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	238
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	239 // Handle ALL stack overflow variations here
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	240 if (sig == SIGSEGV && (addr < thread->stack_base() &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	241 addr >= thread->stack_base() - thread->stack_size())) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	242 // stack overflow
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	243 //
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	245 // throw a stack overflow exception.
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	248 // hs_err_pid files.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	249 if (thread->in_stack_yellow_zone(addr)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	250 thread->disable_stack_yellow_zone();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	251 if (thread->thread_state() == _thread_in_Java) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	252 // Throw a stack overflow exception.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	253 // Guard pages will be reenabled while unwinding the stack.
666e6ce3976c 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);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	255 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	256 } else {
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	258 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	259 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	260 } else if (thread->in_stack_red_zone(addr)) {
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	262 // to handle_unexpected_exception way down below.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	263 thread->disable_stack_red_zone();
666e6ce3976c 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.");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	265 goto report_and_die;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	266 } else {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	267 // This means a segv happened inside our stack, but not in
14415 666e6ce3976c 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,
666e6ce3976c 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.");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	270 goto report_and_die;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	271 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	272
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	273 } // end handle SIGSEGV inside stack boundaries
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	274
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	275 if (thread->thread_state() == _thread_in_Java) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	276 // Java thread running in Java code
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	277
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	278 // The following signals are used for communicating VM events:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	279 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	280 // SIGILL: the compiler generates illegal opcodes
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	281 // at places where it wishes to interrupt the VM:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	282 // Safepoints, Unreachable Code, Entry points of Zombie methods,
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	284 //
666e6ce3976c 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)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	286 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	287 // SIGTRAP:
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	290 // to be never taken. These are:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	291 // - zombie methods
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	292 // - IC (inline cache) misses.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	293 // - null checks leading to UncommonTraps.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	294 // - range checks leading to Uncommon Traps.
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	297 // write protected. //
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	299 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	300 // SIGSEGV:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	301 // used for safe point polling:
666e6ce3976c 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:
666e6ce3976c 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.
666e6ce3976c 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
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	306 // used for null checks:
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	309 // are used for null checks.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	310
666e6ce3976c 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.
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	314 // explicit SIGILLs in the zero page.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	315 if (sig == SIGILL && (pc < (address) 0x200)) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	316 if (TraceTraps) {
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	317 tty->print_raw_cr("SIGILL happened inside zero page.");
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	318 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	319 goto report_and_die;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	320 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	321
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	322 // Handle signal from NativeJump::patch_verified_entry().
666e6ce3976c 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()) \|\|
666e6ce3976c 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())) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	325 if (TraceTraps) {
14415 666e6ce3976c 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");
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	327 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	328 stub = SharedRuntime::get_handle_wrong_method_stub();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	329 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	330 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	331
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	332 else if (sig == SIGSEGV && os::is_poll_address(addr)) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	333 if (TraceTraps) {
14415 666e6ce3976c 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);
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	335 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	336 stub = SharedRuntime::get_poll_stub(pc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	337 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	338 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	339
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	340 // SIGTRAP-based ic miss check in compiled code.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	341 else if (sig == SIGTRAP && TrapBasedICMissChecks &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	342 nativeInstruction_at(pc)->is_sigtrap_ic_miss_check()) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	343 if (TraceTraps) {
14415 666e6ce3976c 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);
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	345 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	346 stub = SharedRuntime::get_ic_miss_stub();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	347 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	348 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	349
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	350 // SIGTRAP-based implicit null check in compiled code.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	351 else if (sig == SIGTRAP && TrapBasedNullChecks &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	352 nativeInstruction_at(pc)->is_sigtrap_null_check()) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	353 if (TraceTraps) {
14415 666e6ce3976c 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);
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	355 }
14415 666e6ce3976c 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);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	357 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	358 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	359
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	360 // SIGSEGV-based implicit null check in compiled code.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	361 else if (sig == SIGSEGV && ImplicitNullChecks &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	362 CodeCache::contains((void*) pc) &&
666e6ce3976c 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)) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	364 if (TraceTraps) {
14415 666e6ce3976c 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);
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	366 }
14415 666e6ce3976c 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);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	368 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	369
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	370 #ifdef COMPILER2
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	371 // SIGTRAP-based implicit range check in compiled code.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	372 else if (sig == SIGTRAP && TrapBasedRangeChecks &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	373 nativeInstruction_at(pc)->is_sigtrap_range_check()) {
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	374 if (TraceTraps) {
14415 666e6ce3976c 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);
14445 67fa91961822 8029940: PPC64 (part 122): C2 compiler port goetz parents: 14415 diff changeset	376 }
14415 666e6ce3976c 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);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	378 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	379 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	380 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	381
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	382 else if (sig == SIGFPE /* && info->si_code == FPE_INTDIV */) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	383 if (TraceTraps) {
666e6ce3976c 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.");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	385 }
666e6ce3976c 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);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	387 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	388 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	389
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	390 else if (sig == SIGBUS) {
666e6ce3976c 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
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	393 CodeBlob* cb = CodeCache::find_blob_unsafe(pc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	394 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	395 if (nm != NULL && nm->has_unsafe_access()) {
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	398 // garbage from this read is ok.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	399 thread->set_pending_unsafe_access_error();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	400 uc->uc_mcontext.jmp_context.iar = ((unsigned long)pc) + 4;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	401 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	402 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	403 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	404 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	405
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	406 else { // thread->thread_state() != _thread_in_Java
666e6ce3976c 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
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	409
666e6ce3976c 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()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	411 // SIGILL must be caused by VM_Version::determine_features().
666e6ce3976c 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,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	413 // flushing of icache is not necessary.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	414 stub = pc + 4; // continue with next instruction.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	415 goto run_stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	416 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	417 else if (thread->thread_state() == _thread_in_vm &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	418 sig == SIGBUS && thread->doing_unsafe_access()) {
666e6ce3976c 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
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	421 // garbage from this read is ok.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	422 thread->set_pending_unsafe_access_error();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	423 uc->uc_mcontext.jmp_context.iar = ((unsigned long)pc) + 4;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	424 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	425 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	426 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	427
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	429 // process of write protecting the memory serialization page.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	430 // It write enables the page immediately after protecting it
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	431 // so we can just return to retry the write.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	432 if ((sig == SIGSEGV) &&
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	433 os::is_memory_serialize_page(thread, addr)) {
666e6ce3976c 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)
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	436 os::block_on_serialize_page_trap();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	437 return true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	438 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	439 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	440
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	441 run_stub:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	442
666e6ce3976c 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
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	444 // delegate control to that stub.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	445 if (stub != NULL) {
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	447 if (thread != NULL) thread->set_saved_exception_pc(pc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	448 uc->uc_mcontext.jmp_context.iar = (unsigned long)stub;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	449 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	450 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	451
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	452 run_chained_handler:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	453
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	454 // signal-chaining
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	455 if (os::Aix::chained_handler(sig, info, ucVoid)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	456 return 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	457 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	458 if (!abort_if_unrecognized) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	459 // caller wants another chance, so give it to him
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	460 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	461 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	462
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	463 report_and_die:
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	464
666e6ce3976c 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.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	466 sigset_t newset;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	467 sigemptyset(&newset);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	468 sigaddset(&newset, sig);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	469 sigthreadmask(SIG_UNBLOCK, &newset, NULL);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	470
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	471 VMError err(t, sig, pc, info, ucVoid);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	472 err.report_and_die();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	473
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	474 ShouldNotReachHere();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	475 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	476 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	477
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	478 void os::Aix::init_thread_fpu_state(void) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	479 #if !defined(USE_XLC_BUILTINS)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	480 // Disable FP exceptions.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	481 __asm__ __volatile__ ("mtfsfi 6,0");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	482 #else
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	483 __mtfsfi(6, 0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	484 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	485 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	486
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	487 ////////////////////////////////////////////////////////////////////////////////
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	488 // thread stack
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	489
20710 c5e86c5cd22e 8066964: ppc64: argument and return type profiling, fix problem with popframe goetz parents: 17807 diff changeset	490 size_t os::Aix::min_stack_allowed = 128*K;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	491
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	492 // Aix is always in floating stack mode. The stack size for a new
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	493 // thread can be set via pthread_attr_setstacksize().
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	494 bool os::Aix::supports_variable_stack_size() { return true; }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	495
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	496 // return default stack size for thr_type
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	497 size_t os::Aix::default_stack_size(os::ThreadType thr_type) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	498 // default stack size (compiler thread needs larger stack)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	499 // Notice that the setting for compiler threads here have no impact
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	500 // because of the strange 'fallback logic' in os::create_thread().
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	501 // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	502 // specify a different stack size for compiler threads!
20710 c5e86c5cd22e 8066964: ppc64: argument and return type profiling, fix problem with popframe goetz parents: 17807 diff changeset	503 size_t s = (thr_type == os::compiler_thread ? 4 * M : 1 * M);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	504 return s;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	505 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	506
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	507 size_t os::Aix::default_guard_size(os::ThreadType thr_type) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	508 return 2 * page_size();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	509 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	510
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	511 /////////////////////////////////////////////////////////////////////////////
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	512 // helper functions for fatal error handler
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	513
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	514 void os::print_context(outputStream st, void context) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	515 if (context == NULL) return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	516
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	517 ucontext_t* uc = (ucontext_t*)context;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	518
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	519 st->print_cr("Registers:");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	520 st->print("pc =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.iar);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	521 st->print("lr =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.lr);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	522 st->print("ctr=" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.ctr);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	523 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	524 for (int i = 0; i < 32; i++) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	525 st->print("r%-2d=" INTPTR_FORMAT " ", i, uc->uc_mcontext.jmp_context.gpr[i]);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	526 if (i % 3 == 2) st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	527 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	528 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	529 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	530
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	531 intptr_t sp = (intptr_t )os::Aix::ucontext_get_sp(uc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	532 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	533 print_hex_dump(st, (address)sp, (address)(sp + 128), sizeof(intptr_t));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	534 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	535
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	536 // Note: it may be unsafe to inspect memory near pc. For example, pc may
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	537 // point to garbage if entry point in an nmethod is corrupted. Leave
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	538 // this at the end, and hope for the best.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	539 address pc = os::Aix::ucontext_get_pc(uc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	540 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	541 print_hex_dump(st, pc - 64, pc + 64, /instrsize=/4);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	542 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	543
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	544 // Try to decode the instructions.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	545 st->print_cr("Decoded instructions: (pc=" PTR_FORMAT ")", pc);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	546 st->print("<TODO: PPC port - print_context>");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	547 // TODO: PPC port Disassembler::decode(pc, 16, 16, st);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	548 st->cr();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	549 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	550
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	551 void os::print_register_info(outputStream st, void context) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	552 if (context == NULL) return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	553 st->print("Not ported - print_register_info\n");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	554 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	555
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	556 extern "C" {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	557 int SpinPause() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	558 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	559 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	560 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	561
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	562 #ifndef PRODUCT
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	563 void os::verify_stack_alignment() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	564 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	565 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	566 #endif

Mercurial > hg > truffle

annotate src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp @ 20710:c5e86c5cd22e