Mercurial > hg > truffle
annotate src/os_cpu/aix_ppc/vm/os_aix_ppc.cpp @ 18120:86ec7f6f71b3
refactored GraalCompilerTest API to be in terms of ResolvedJavaMethod instead of Method
author | Doug Simon <doug.simon@oracle.com> |
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date | Sat, 18 Oct 2014 00:08:19 +0200 |
parents | 71a71b0bc844 |
children | c5e86c5cd22e |
rev | line source |
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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
17807 | 3 * Copyright 2012, 2014 SAP AG. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 // no precompiled headers |
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27 #include "assembler_ppc.inline.hpp" |
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28 #include "classfile/classLoader.hpp" |
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29 #include "classfile/systemDictionary.hpp" |
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30 #include "classfile/vmSymbols.hpp" |
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31 #include "code/icBuffer.hpp" |
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32 #include "code/vtableStubs.hpp" |
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33 #include "interpreter/interpreter.hpp" |
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34 #include "jvm_aix.h" |
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35 #include "memory/allocation.inline.hpp" |
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36 #include "mutex_aix.inline.hpp" |
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37 #include "nativeInst_ppc.hpp" |
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38 #include "os_share_aix.hpp" |
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39 #include "prims/jniFastGetField.hpp" |
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40 #include "prims/jvm.h" |
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41 #include "prims/jvm_misc.hpp" |
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42 #include "runtime/arguments.hpp" |
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43 #include "runtime/extendedPC.hpp" |
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44 #include "runtime/frame.inline.hpp" |
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45 #include "runtime/interfaceSupport.hpp" |
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46 #include "runtime/java.hpp" |
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47 #include "runtime/javaCalls.hpp" |
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48 #include "runtime/mutexLocker.hpp" |
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49 #include "runtime/osThread.hpp" |
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50 #include "runtime/sharedRuntime.hpp" |
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51 #include "runtime/stubRoutines.hpp" |
17807 | 52 #include "runtime/thread.inline.hpp" |
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53 #include "runtime/timer.hpp" |
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54 #include "utilities/events.hpp" |
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55 #include "utilities/vmError.hpp" |
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56 #ifdef COMPILER1 |
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57 #include "c1/c1_Runtime1.hpp" |
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58 #endif |
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59 #ifdef COMPILER2 |
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60 #include "opto/runtime.hpp" |
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61 #endif |
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62 |
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63 // put OS-includes here |
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64 # include <ucontext.h> |
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65 |
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66 address os::current_stack_pointer() { |
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67 address csp; |
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68 |
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69 #if !defined(USE_XLC_BUILTINS) |
14445 | 70 // inline assembly for `mr regno(csp), R1_SP': |
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71 __asm__ __volatile__ ("mr %0, 1":"=r"(csp):); |
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72 #else |
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73 csp = (address) __builtin_frame_address(0); |
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74 #endif |
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75 |
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76 return csp; |
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77 } |
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78 |
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79 char* os::non_memory_address_word() { |
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80 // Must never look like an address returned by reserve_memory, |
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81 // even in its subfields (as defined by the CPU immediate fields, |
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82 // if the CPU splits constants across multiple instructions). |
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83 |
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84 return (char*) -1; |
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85 } |
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86 |
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87 // OS specific thread initialization |
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88 // |
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89 // Calculate and store the limits of the memory stack. |
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90 void os::initialize_thread(Thread *thread) { } |
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91 |
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92 // Frame information (pc, sp, fp) retrieved via ucontext |
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93 // always looks like a C-frame according to the frame |
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94 // conventions in frame_ppc64.hpp. |
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95 address os::Aix::ucontext_get_pc(ucontext_t * uc) { |
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96 return (address)uc->uc_mcontext.jmp_context.iar; |
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97 } |
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98 |
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99 intptr_t* os::Aix::ucontext_get_sp(ucontext_t * uc) { |
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100 // gpr1 holds the stack pointer on aix |
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101 return (intptr_t*)uc->uc_mcontext.jmp_context.gpr[1/*REG_SP*/]; |
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102 } |
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103 |
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104 intptr_t* os::Aix::ucontext_get_fp(ucontext_t * uc) { |
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105 return NULL; |
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106 } |
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107 |
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108 void os::Aix::ucontext_set_pc(ucontext_t* uc, address new_pc) { |
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109 uc->uc_mcontext.jmp_context.iar = (uint64_t) new_pc; |
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110 } |
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111 |
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112 ExtendedPC os::fetch_frame_from_context(void* ucVoid, |
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113 intptr_t** ret_sp, intptr_t** ret_fp) { |
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114 |
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115 ExtendedPC epc; |
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116 ucontext_t* uc = (ucontext_t*)ucVoid; |
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117 |
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118 if (uc != NULL) { |
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119 epc = ExtendedPC(os::Aix::ucontext_get_pc(uc)); |
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120 if (ret_sp) *ret_sp = os::Aix::ucontext_get_sp(uc); |
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121 if (ret_fp) *ret_fp = os::Aix::ucontext_get_fp(uc); |
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122 } else { |
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123 // construct empty ExtendedPC for return value checking |
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124 epc = ExtendedPC(NULL); |
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125 if (ret_sp) *ret_sp = (intptr_t *)NULL; |
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126 if (ret_fp) *ret_fp = (intptr_t *)NULL; |
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127 } |
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128 |
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129 return epc; |
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130 } |
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131 |
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132 frame os::fetch_frame_from_context(void* ucVoid) { |
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133 intptr_t* sp; |
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134 intptr_t* fp; |
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135 ExtendedPC epc = fetch_frame_from_context(ucVoid, &sp, &fp); |
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136 // Avoid crash during crash if pc broken. |
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137 if (epc.pc()) { |
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138 frame fr(sp, epc.pc()); |
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139 return fr; |
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140 } |
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141 frame fr(sp); |
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142 return fr; |
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143 } |
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144 |
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145 frame os::get_sender_for_C_frame(frame* fr) { |
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146 if (*fr->sp() == NULL) { |
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147 // fr is the last C frame |
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148 return frame(NULL, NULL); |
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149 } |
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150 return frame(fr->sender_sp(), fr->sender_pc()); |
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151 } |
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152 |
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153 |
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154 frame os::current_frame() { |
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155 intptr_t* csp = (intptr_t*) *((intptr_t*) os::current_stack_pointer()); |
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156 // hack. |
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157 frame topframe(csp, (address)0x8); |
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158 // return sender of current topframe which hopefully has pc != NULL. |
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159 return os::get_sender_for_C_frame(&topframe); |
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160 } |
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161 |
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162 // Utility functions |
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163 |
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164 extern "C" JNIEXPORT int |
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165 JVM_handle_aix_signal(int sig, siginfo_t* info, void* ucVoid, int abort_if_unrecognized) { |
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166 |
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167 ucontext_t* uc = (ucontext_t*) ucVoid; |
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168 |
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169 Thread* t = ThreadLocalStorage::get_thread_slow(); // slow & steady |
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170 |
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171 SignalHandlerMark shm(t); |
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172 |
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173 // Note: it's not uncommon that JNI code uses signal/sigset to install |
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174 // then restore certain signal handler (e.g. to temporarily block SIGPIPE, |
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175 // or have a SIGILL handler when detecting CPU type). When that happens, |
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176 // JVM_handle_aix_signal() might be invoked with junk info/ucVoid. To |
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177 // avoid unnecessary crash when libjsig is not preloaded, try handle signals |
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178 // that do not require siginfo/ucontext first. |
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179 |
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180 if (sig == SIGPIPE) { |
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181 if (os::Aix::chained_handler(sig, info, ucVoid)) { |
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182 return 1; |
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183 } else { |
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184 if (PrintMiscellaneous && (WizardMode || Verbose)) { |
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185 warning("Ignoring SIGPIPE - see bug 4229104"); |
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186 } |
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187 return 1; |
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188 } |
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189 } |
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190 |
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191 JavaThread* thread = NULL; |
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192 VMThread* vmthread = NULL; |
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193 if (os::Aix::signal_handlers_are_installed) { |
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194 if (t != NULL) { |
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195 if(t->is_Java_thread()) { |
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196 thread = (JavaThread*)t; |
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197 } |
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198 else if(t->is_VM_thread()) { |
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199 vmthread = (VMThread *)t; |
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200 } |
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201 } |
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202 } |
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203 |
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204 // Decide if this trap can be handled by a stub. |
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205 address stub = NULL; |
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206 |
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207 // retrieve program counter |
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208 address const pc = uc ? os::Aix::ucontext_get_pc(uc) : NULL; |
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209 |
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210 // retrieve crash address |
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211 address const addr = info ? (const address) info->si_addr : NULL; |
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212 |
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213 // SafeFetch 32 handling: |
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214 // - make it work if _thread is null |
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215 // - make it use the standard os::...::ucontext_get/set_pc APIs |
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216 if (uc) { |
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217 address const pc = os::Aix::ucontext_get_pc(uc); |
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218 if (pc && StubRoutines::is_safefetch_fault(pc)) { |
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219 os::Aix::ucontext_set_pc(uc, StubRoutines::continuation_for_safefetch_fault(pc)); |
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220 return true; |
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221 } |
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222 } |
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223 |
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224 // Handle SIGDANGER right away. AIX would raise SIGDANGER whenever available swap |
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225 // space falls below 30%. This is only a chance for the process to gracefully abort. |
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226 // We can't hope to proceed after SIGDANGER since SIGKILL tailgates. |
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227 if (sig == SIGDANGER) { |
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228 goto report_and_die; |
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229 } |
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230 |
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231 if (info == NULL || uc == NULL || thread == NULL && vmthread == NULL) { |
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232 goto run_chained_handler; |
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233 } |
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234 |
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235 // If we are a java thread... |
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236 if (thread != NULL) { |
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237 |
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238 // Handle ALL stack overflow variations here |
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239 if (sig == SIGSEGV && (addr < thread->stack_base() && |
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240 addr >= thread->stack_base() - thread->stack_size())) { |
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241 // stack overflow |
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242 // |
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243 // If we are in a yellow zone and we are inside java, we disable the yellow zone and |
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244 // throw a stack overflow exception. |
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245 // If we are in native code or VM C code, we report-and-die. The original coding tried |
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246 // to continue with yellow zone disabled, but that doesn't buy us much and prevents |
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247 // hs_err_pid files. |
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248 if (thread->in_stack_yellow_zone(addr)) { |
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249 thread->disable_stack_yellow_zone(); |
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250 if (thread->thread_state() == _thread_in_Java) { |
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251 // Throw a stack overflow exception. |
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252 // Guard pages will be reenabled while unwinding the stack. |
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253 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::STACK_OVERFLOW); |
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254 goto run_stub; |
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255 } else { |
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256 // Thread was in the vm or native code. Return and try to finish. |
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257 return 1; |
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258 } |
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259 } else if (thread->in_stack_red_zone(addr)) { |
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260 // Fatal red zone violation. Disable the guard pages and fall through |
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261 // to handle_unexpected_exception way down below. |
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262 thread->disable_stack_red_zone(); |
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263 tty->print_raw_cr("An irrecoverable stack overflow has occurred."); |
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264 goto report_and_die; |
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265 } else { |
14445 | 266 // This means a segv happened inside our stack, but not in |
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267 // the guarded zone. I'd like to know when this happens, |
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268 tty->print_raw_cr("SIGSEGV happened inside stack but outside yellow and red zone."); |
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269 goto report_and_die; |
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270 } |
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271 |
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272 } // end handle SIGSEGV inside stack boundaries |
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273 |
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274 if (thread->thread_state() == _thread_in_Java) { |
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275 // Java thread running in Java code |
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276 |
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277 // The following signals are used for communicating VM events: |
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278 // |
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279 // SIGILL: the compiler generates illegal opcodes |
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280 // at places where it wishes to interrupt the VM: |
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281 // Safepoints, Unreachable Code, Entry points of Zombie methods, |
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282 // This results in a SIGILL with (*pc) == inserted illegal instruction. |
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283 // |
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284 // (so, SIGILLs with a pc inside the zero page are real errors) |
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285 // |
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286 // SIGTRAP: |
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287 // The ppc trap instruction raises a SIGTRAP and is very efficient if it |
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288 // does not trap. It is used for conditional branches that are expected |
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289 // to be never taken. These are: |
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290 // - zombie methods |
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291 // - IC (inline cache) misses. |
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292 // - null checks leading to UncommonTraps. |
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293 // - range checks leading to Uncommon Traps. |
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294 // On Aix, these are especially null checks, as the ImplicitNullCheck |
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295 // optimization works only in rare cases, as the page at address 0 is only |
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296 // write protected. // |
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297 // Note: !UseSIGTRAP is used to prevent SIGTRAPS altogether, to facilitate debugging. |
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298 // |
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299 // SIGSEGV: |
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300 // used for safe point polling: |
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301 // To notify all threads that they have to reach a safe point, safe point polling is used: |
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302 // All threads poll a certain mapped memory page. Normally, this page has read access. |
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303 // If the VM wants to inform the threads about impending safe points, it puts this |
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304 // page to read only ("poisens" the page), and the threads then reach a safe point. |
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305 // used for null checks: |
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306 // If the compiler finds a store it uses it for a null check. Unfortunately this |
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307 // happens rarely. In heap based and disjoint base compressd oop modes also loads |
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308 // are used for null checks. |
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309 |
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310 // A VM-related SIGILL may only occur if we are not in the zero page. |
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311 // On AIX, we get a SIGILL if we jump to 0x0 or to somewhere else |
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312 // in the zero page, because it is filled with 0x0. We ignore |
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313 // explicit SIGILLs in the zero page. |
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314 if (sig == SIGILL && (pc < (address) 0x200)) { |
14445 | 315 if (TraceTraps) { |
14415
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316 tty->print_raw_cr("SIGILL happened inside zero page."); |
14445 | 317 } |
14415
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318 goto report_and_die; |
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319 } |
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320 |
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321 // Handle signal from NativeJump::patch_verified_entry(). |
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322 if (( TrapBasedNotEntrantChecks && sig == SIGTRAP && nativeInstruction_at(pc)->is_sigtrap_zombie_not_entrant()) || |
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323 (!TrapBasedNotEntrantChecks && sig == SIGILL && nativeInstruction_at(pc)->is_sigill_zombie_not_entrant())) { |
14445 | 324 if (TraceTraps) { |
14415
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325 tty->print_cr("trap: zombie_not_entrant (%s)", (sig == SIGTRAP) ? "SIGTRAP" : "SIGILL"); |
14445 | 326 } |
14415
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327 stub = SharedRuntime::get_handle_wrong_method_stub(); |
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328 goto run_stub; |
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329 } |
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330 |
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331 else if (sig == SIGSEGV && os::is_poll_address(addr)) { |
14445 | 332 if (TraceTraps) { |
14415
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333 tty->print_cr("trap: safepoint_poll at " INTPTR_FORMAT " (SIGSEGV)", pc); |
14445 | 334 } |
14415
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335 stub = SharedRuntime::get_poll_stub(pc); |
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336 goto run_stub; |
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337 } |
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338 |
14445 | 339 // SIGTRAP-based ic miss check in compiled code. |
14415
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340 else if (sig == SIGTRAP && TrapBasedICMissChecks && |
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341 nativeInstruction_at(pc)->is_sigtrap_ic_miss_check()) { |
14445 | 342 if (TraceTraps) { |
14415
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343 tty->print_cr("trap: ic_miss_check at " INTPTR_FORMAT " (SIGTRAP)", pc); |
14445 | 344 } |
14415
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345 stub = SharedRuntime::get_ic_miss_stub(); |
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346 goto run_stub; |
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347 } |
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348 |
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349 // SIGTRAP-based implicit null check in compiled code. |
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350 else if (sig == SIGTRAP && TrapBasedNullChecks && |
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351 nativeInstruction_at(pc)->is_sigtrap_null_check()) { |
14445 | 352 if (TraceTraps) { |
14415
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353 tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGTRAP)", pc); |
14445 | 354 } |
14415
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355 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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356 goto run_stub; |
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|
357 } |
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358 |
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359 // SIGSEGV-based implicit null check in compiled code. |
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360 else if (sig == SIGSEGV && ImplicitNullChecks && |
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361 CodeCache::contains((void*) pc) && |
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362 !MacroAssembler::needs_explicit_null_check((intptr_t) info->si_addr)) { |
14445 | 363 if (TraceTraps) { |
14415
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364 tty->print_cr("trap: null_check at " INTPTR_FORMAT " (SIGSEGV)", pc); |
14445 | 365 } |
14415
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366 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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367 } |
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368 |
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|
369 #ifdef COMPILER2 |
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370 // SIGTRAP-based implicit range check in compiled code. |
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371 else if (sig == SIGTRAP && TrapBasedRangeChecks && |
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372 nativeInstruction_at(pc)->is_sigtrap_range_check()) { |
14445 | 373 if (TraceTraps) { |
14415
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374 tty->print_cr("trap: range_check at " INTPTR_FORMAT " (SIGTRAP)", pc); |
14445 | 375 } |
14415
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376 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_NULL); |
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377 goto run_stub; |
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378 } |
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379 #endif |
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380 |
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381 else if (sig == SIGFPE /* && info->si_code == FPE_INTDIV */) { |
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382 if (TraceTraps) { |
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383 tty->print_raw_cr("Fix SIGFPE handler, trying divide by zero handler."); |
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384 } |
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385 stub = SharedRuntime::continuation_for_implicit_exception(thread, pc, SharedRuntime::IMPLICIT_DIVIDE_BY_ZERO); |
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386 goto run_stub; |
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387 } |
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388 |
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389 else if (sig == SIGBUS) { |
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390 // BugId 4454115: A read from a MappedByteBuffer can fault here if the |
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391 // underlying file has been truncated. Do not crash the VM in such a case. |
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392 CodeBlob* cb = CodeCache::find_blob_unsafe(pc); |
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393 nmethod* nm = cb->is_nmethod() ? (nmethod*)cb : NULL; |
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394 if (nm != NULL && nm->has_unsafe_access()) { |
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395 // We don't really need a stub here! Just set the pending exeption and |
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396 // continue at the next instruction after the faulting read. Returning |
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397 // garbage from this read is ok. |
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398 thread->set_pending_unsafe_access_error(); |
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399 uc->uc_mcontext.jmp_context.iar = ((unsigned long)pc) + 4; |
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400 return 1; |
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401 } |
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402 } |
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403 } |
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404 |
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405 else { // thread->thread_state() != _thread_in_Java |
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406 // Detect CPU features. This is only done at the very start of the VM. Later, the |
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407 // VM_Version::is_determine_features_test_running() flag should be false. |
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408 |
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409 if (sig == SIGILL && VM_Version::is_determine_features_test_running()) { |
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410 // SIGILL must be caused by VM_Version::determine_features(). |
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411 *(int *)pc = 0; // patch instruction to 0 to indicate that it causes a SIGILL, |
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412 // flushing of icache is not necessary. |
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413 stub = pc + 4; // continue with next instruction. |
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414 goto run_stub; |
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415 } |
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416 else if (thread->thread_state() == _thread_in_vm && |
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417 sig == SIGBUS && thread->doing_unsafe_access()) { |
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418 // We don't really need a stub here! Just set the pending exeption and |
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419 // continue at the next instruction after the faulting read. Returning |
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420 // garbage from this read is ok. |
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421 thread->set_pending_unsafe_access_error(); |
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422 uc->uc_mcontext.jmp_context.iar = ((unsigned long)pc) + 4; |
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423 return 1; |
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424 } |
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425 } |
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426 |
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427 // Check to see if we caught the safepoint code in the |
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428 // process of write protecting the memory serialization page. |
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429 // It write enables the page immediately after protecting it |
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430 // so we can just return to retry the write. |
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431 if ((sig == SIGSEGV) && |
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432 os::is_memory_serialize_page(thread, addr)) { |
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433 // Synchronization problem in the pseudo memory barrier code (bug id 6546278) |
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434 // Block current thread until the memory serialize page permission restored. |
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435 os::block_on_serialize_page_trap(); |
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436 return true; |
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437 } |
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438 } |
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439 |
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440 run_stub: |
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441 |
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442 // One of the above code blocks ininitalized the stub, so we want to |
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443 // delegate control to that stub. |
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444 if (stub != NULL) { |
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445 // Save all thread context in case we need to restore it. |
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446 if (thread != NULL) thread->set_saved_exception_pc(pc); |
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447 uc->uc_mcontext.jmp_context.iar = (unsigned long)stub; |
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448 return 1; |
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449 } |
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450 |
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451 run_chained_handler: |
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452 |
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453 // signal-chaining |
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454 if (os::Aix::chained_handler(sig, info, ucVoid)) { |
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455 return 1; |
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456 } |
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457 if (!abort_if_unrecognized) { |
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458 // caller wants another chance, so give it to him |
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459 return 0; |
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460 } |
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461 |
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462 report_and_die: |
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463 |
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464 // Use sigthreadmask instead of sigprocmask on AIX and unmask current signal. |
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465 sigset_t newset; |
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466 sigemptyset(&newset); |
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467 sigaddset(&newset, sig); |
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468 sigthreadmask(SIG_UNBLOCK, &newset, NULL); |
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469 |
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470 VMError err(t, sig, pc, info, ucVoid); |
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471 err.report_and_die(); |
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472 |
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473 ShouldNotReachHere(); |
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474 return 0; |
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475 } |
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476 |
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477 void os::Aix::init_thread_fpu_state(void) { |
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478 #if !defined(USE_XLC_BUILTINS) |
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479 // Disable FP exceptions. |
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480 __asm__ __volatile__ ("mtfsfi 6,0"); |
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481 #else |
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482 __mtfsfi(6, 0); |
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483 #endif |
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484 } |
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485 |
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486 //////////////////////////////////////////////////////////////////////////////// |
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487 // thread stack |
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488 |
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489 size_t os::Aix::min_stack_allowed = 768*K; |
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490 |
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491 // Aix is always in floating stack mode. The stack size for a new |
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492 // thread can be set via pthread_attr_setstacksize(). |
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493 bool os::Aix::supports_variable_stack_size() { return true; } |
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494 |
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495 // return default stack size for thr_type |
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496 size_t os::Aix::default_stack_size(os::ThreadType thr_type) { |
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497 // default stack size (compiler thread needs larger stack) |
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498 // Notice that the setting for compiler threads here have no impact |
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499 // because of the strange 'fallback logic' in os::create_thread(). |
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500 // Better set CompilerThreadStackSize in globals_<os_cpu>.hpp if you want to |
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501 // specify a different stack size for compiler threads! |
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502 size_t s = (thr_type == os::compiler_thread ? 4 * M : 1024 * K); |
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503 return s; |
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|
504 } |
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505 |
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506 size_t os::Aix::default_guard_size(os::ThreadType thr_type) { |
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507 return 2 * page_size(); |
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508 } |
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|
509 |
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510 ///////////////////////////////////////////////////////////////////////////// |
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511 // helper functions for fatal error handler |
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|
512 |
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513 void os::print_context(outputStream *st, void *context) { |
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514 if (context == NULL) return; |
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515 |
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516 ucontext_t* uc = (ucontext_t*)context; |
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517 |
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518 st->print_cr("Registers:"); |
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519 st->print("pc =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.iar); |
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520 st->print("lr =" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.lr); |
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521 st->print("ctr=" INTPTR_FORMAT " ", uc->uc_mcontext.jmp_context.ctr); |
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522 st->cr(); |
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523 for (int i = 0; i < 32; i++) { |
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524 st->print("r%-2d=" INTPTR_FORMAT " ", i, uc->uc_mcontext.jmp_context.gpr[i]); |
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525 if (i % 3 == 2) st->cr(); |
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526 } |
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527 st->cr(); |
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528 st->cr(); |
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529 |
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530 intptr_t *sp = (intptr_t *)os::Aix::ucontext_get_sp(uc); |
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531 st->print_cr("Top of Stack: (sp=" PTR_FORMAT ")", sp); |
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532 print_hex_dump(st, (address)sp, (address)(sp + 128), sizeof(intptr_t)); |
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533 st->cr(); |
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534 |
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535 // Note: it may be unsafe to inspect memory near pc. For example, pc may |
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536 // point to garbage if entry point in an nmethod is corrupted. Leave |
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537 // this at the end, and hope for the best. |
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538 address pc = os::Aix::ucontext_get_pc(uc); |
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539 st->print_cr("Instructions: (pc=" PTR_FORMAT ")", pc); |
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540 print_hex_dump(st, pc - 64, pc + 64, /*instrsize=*/4); |
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541 st->cr(); |
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542 |
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543 // Try to decode the instructions. |
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544 st->print_cr("Decoded instructions: (pc=" PTR_FORMAT ")", pc); |
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545 st->print("<TODO: PPC port - print_context>"); |
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546 // TODO: PPC port Disassembler::decode(pc, 16, 16, st); |
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547 st->cr(); |
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548 } |
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549 |
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550 void os::print_register_info(outputStream *st, void *context) { |
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551 if (context == NULL) return; |
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552 st->print("Not ported - print_register_info\n"); |
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553 } |
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554 |
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555 extern "C" { |
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556 int SpinPause() { |
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557 return 0; |
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558 } |
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559 } |
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560 |
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561 #ifndef PRODUCT |
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562 void os::verify_stack_alignment() { |
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563 assert(((intptr_t)os::current_stack_pointer() & (StackAlignmentInBytes-1)) == 0, "incorrect stack alignment"); |
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564 } |
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565 #endif |