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3960
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1 /*
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2 * Copyright (c) 2002, 2007, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #include <stdlib.h>
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26 #include <jni.h>
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27 #include "libproc.h"
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28
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29 #if defined(x86_64) && !defined(amd64)
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30 #define amd64 1
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31 #endif
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32
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33 #ifdef i386
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34 #include "sun_jvm_hotspot_debugger_x86_X86ThreadContext.h"
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35 #endif
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36
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37 #ifdef amd64
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38 #include "sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext.h"
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39 #endif
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40
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41 #if defined(sparc) || defined(sparcv9)
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42 #include "sun_jvm_hotspot_debugger_sparc_SPARCThreadContext.h"
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43 #endif
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44
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45 static jfieldID p_ps_prochandle_ID = 0;
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46 static jfieldID threadList_ID = 0;
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47 static jfieldID loadObjectList_ID = 0;
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48
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49 static jmethodID createClosestSymbol_ID = 0;
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50 static jmethodID createLoadObject_ID = 0;
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51 static jmethodID getThreadForThreadId_ID = 0;
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52 static jmethodID listAdd_ID = 0;
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53
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54 #define CHECK_EXCEPTION_(value) if ((*env)->ExceptionOccurred(env)) { return value; }
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55 #define CHECK_EXCEPTION if ((*env)->ExceptionOccurred(env)) { return;}
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56 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throw_new_debugger_exception(env, str); return value; }
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57 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throw_new_debugger_exception(env, str); return;}
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58
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59 static void throw_new_debugger_exception(JNIEnv* env, const char* errMsg) {
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60 (*env)->ThrowNew(env, (*env)->FindClass(env, "sun/jvm/hotspot/debugger/DebuggerException"), errMsg);
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61 }
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62
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63 static struct ps_prochandle* get_proc_handle(JNIEnv* env, jobject this_obj) {
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64 jlong ptr = (*env)->GetLongField(env, this_obj, p_ps_prochandle_ID);
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65 return (struct ps_prochandle*)(intptr_t)ptr;
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66 }
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67
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68 /*
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69 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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70 * Method: init0
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71 * Signature: ()V
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72 */
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73 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_init0
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74 (JNIEnv *env, jclass cls) {
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75 jclass listClass;
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76
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77 if (init_libproc(getenv("LIBSAPROC_DEBUG") != NULL) != true) {
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78 THROW_NEW_DEBUGGER_EXCEPTION("can't initialize libproc");
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79 }
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80
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81 // fields we use
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82 p_ps_prochandle_ID = (*env)->GetFieldID(env, cls, "p_ps_prochandle", "J");
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83 CHECK_EXCEPTION;
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84 threadList_ID = (*env)->GetFieldID(env, cls, "threadList", "Ljava/util/List;");
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85 CHECK_EXCEPTION;
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86 loadObjectList_ID = (*env)->GetFieldID(env, cls, "loadObjectList", "Ljava/util/List;");
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87 CHECK_EXCEPTION;
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88
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89 // methods we use
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90 createClosestSymbol_ID = (*env)->GetMethodID(env, cls, "createClosestSymbol",
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91 "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
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92 CHECK_EXCEPTION;
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93 createLoadObject_ID = (*env)->GetMethodID(env, cls, "createLoadObject",
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94 "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
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95 CHECK_EXCEPTION;
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96 getThreadForThreadId_ID = (*env)->GetMethodID(env, cls, "getThreadForThreadId",
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97 "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;");
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98 CHECK_EXCEPTION;
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99 // java.util.List method we call
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100 listClass = (*env)->FindClass(env, "java/util/List");
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101 CHECK_EXCEPTION;
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102 listAdd_ID = (*env)->GetMethodID(env, listClass, "add", "(Ljava/lang/Object;)Z");
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103 CHECK_EXCEPTION;
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104 }
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105
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106 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getAddressSize
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107 (JNIEnv *env, jclass cls)
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108 {
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109 #ifdef _LP64
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110 return 8;
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111 #else
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112 return 4;
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113 #endif
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114
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115 }
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116
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117
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118 static void fillThreadsAndLoadObjects(JNIEnv* env, jobject this_obj, struct ps_prochandle* ph) {
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119 int n = 0, i = 0;
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120
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121 // add threads
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122 n = get_num_threads(ph);
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123 for (i = 0; i < n; i++) {
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124 jobject thread;
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125 jobject threadList;
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126 lwpid_t lwpid;
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127
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128 lwpid = get_lwp_id(ph, i);
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129 thread = (*env)->CallObjectMethod(env, this_obj, getThreadForThreadId_ID,
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130 (jlong)lwpid);
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131 CHECK_EXCEPTION;
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132 threadList = (*env)->GetObjectField(env, this_obj, threadList_ID);
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133 CHECK_EXCEPTION;
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134 (*env)->CallBooleanMethod(env, threadList, listAdd_ID, thread);
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135 CHECK_EXCEPTION;
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136 }
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137
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138 // add load objects
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139 n = get_num_libs(ph);
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140 for (i = 0; i < n; i++) {
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141 uintptr_t base;
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142 const char* name;
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143 jobject loadObject;
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144 jobject loadObjectList;
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145
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146 base = get_lib_base(ph, i);
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147 name = get_lib_name(ph, i);
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148 loadObject = (*env)->CallObjectMethod(env, this_obj, createLoadObject_ID,
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149 (*env)->NewStringUTF(env, name), (jlong)0, (jlong)base);
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150 CHECK_EXCEPTION;
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151 loadObjectList = (*env)->GetObjectField(env, this_obj, loadObjectList_ID);
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152 CHECK_EXCEPTION;
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153 (*env)->CallBooleanMethod(env, loadObjectList, listAdd_ID, loadObject);
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154 CHECK_EXCEPTION;
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155 }
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156 }
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157
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158 /*
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159 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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160 * Method: attach0
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161 * Signature: (I)V
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162 */
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163 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__I
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164 (JNIEnv *env, jobject this_obj, jint jpid) {
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165
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166 struct ps_prochandle* ph;
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167 if ( (ph = Pgrab(jpid)) == NULL) {
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168 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the process");
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169 }
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170 (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph);
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171 fillThreadsAndLoadObjects(env, this_obj, ph);
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172 }
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173
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174 /*
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175 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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176 * Method: attach0
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177 * Signature: (Ljava/lang/String;Ljava/lang/String;)V
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178 */
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179 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2
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180 (JNIEnv *env, jobject this_obj, jstring execName, jstring coreName) {
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181 const char *execName_cstr;
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182 const char *coreName_cstr;
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183 jboolean isCopy;
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184 struct ps_prochandle* ph;
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185
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186 execName_cstr = (*env)->GetStringUTFChars(env, execName, &isCopy);
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187 CHECK_EXCEPTION;
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188 coreName_cstr = (*env)->GetStringUTFChars(env, coreName, &isCopy);
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189 CHECK_EXCEPTION;
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190
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191 if ( (ph = Pgrab_core(execName_cstr, coreName_cstr)) == NULL) {
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192 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
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193 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
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194 THROW_NEW_DEBUGGER_EXCEPTION("Can't attach to the core file");
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195 }
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196 (*env)->SetLongField(env, this_obj, p_ps_prochandle_ID, (jlong)(intptr_t)ph);
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197 (*env)->ReleaseStringUTFChars(env, execName, execName_cstr);
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198 (*env)->ReleaseStringUTFChars(env, coreName, coreName_cstr);
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199 fillThreadsAndLoadObjects(env, this_obj, ph);
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200 }
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201
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202 /*
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203 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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204 * Method: detach0
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205 * Signature: ()V
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206 */
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207 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_detach0
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208 (JNIEnv *env, jobject this_obj) {
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209 struct ps_prochandle* ph = get_proc_handle(env, this_obj);
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210 if (ph != NULL) {
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211 Prelease(ph);
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212 }
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213 }
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214
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215 /*
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216 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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217 * Method: lookupByName0
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218 * Signature: (Ljava/lang/String;Ljava/lang/String;)J
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219 */
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220 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByName0
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221 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) {
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222 const char *objectName_cstr, *symbolName_cstr;
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223 jlong addr;
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224 jboolean isCopy;
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225 struct ps_prochandle* ph = get_proc_handle(env, this_obj);
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226
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227 objectName_cstr = NULL;
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228 if (objectName != NULL) {
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229 objectName_cstr = (*env)->GetStringUTFChars(env, objectName, &isCopy);
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230 CHECK_EXCEPTION_(0);
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231 }
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232 symbolName_cstr = (*env)->GetStringUTFChars(env, symbolName, &isCopy);
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233 CHECK_EXCEPTION_(0);
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234
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235 addr = (jlong) lookup_symbol(ph, objectName_cstr, symbolName_cstr);
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236
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237 if (objectName_cstr != NULL) {
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238 (*env)->ReleaseStringUTFChars(env, objectName, objectName_cstr);
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239 }
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240 (*env)->ReleaseStringUTFChars(env, symbolName, symbolName_cstr);
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241 return addr;
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242 }
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243
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244 /*
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245 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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246 * Method: lookupByAddress0
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247 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
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248 */
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249 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_lookupByAddress0
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250 (JNIEnv *env, jobject this_obj, jlong addr) {
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251 uintptr_t offset;
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252 const char* sym = NULL;
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253
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254 struct ps_prochandle* ph = get_proc_handle(env, this_obj);
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255 sym = symbol_for_pc(ph, (uintptr_t) addr, &offset);
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256 if (sym == NULL) return 0;
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257 return (*env)->CallObjectMethod(env, this_obj, createClosestSymbol_ID,
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258 (*env)->NewStringUTF(env, sym), (jlong)offset);
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259 }
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260
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261 /*
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262 * Class: sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal
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263 * Method: readBytesFromProcess0
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264 * Signature: (JJ)Lsun/jvm/hotspot/debugger/ReadResult;
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265 */
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266 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_readBytesFromProcess0
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267 (JNIEnv *env, jobject this_obj, jlong addr, jlong numBytes) {
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268
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269 jboolean isCopy;
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270 jbyteArray array;
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271 jbyte *bufPtr;
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272 ps_err_e err;
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273
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274 array = (*env)->NewByteArray(env, numBytes);
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275 CHECK_EXCEPTION_(0);
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276 bufPtr = (*env)->GetByteArrayElements(env, array, &isCopy);
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277 CHECK_EXCEPTION_(0);
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278
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279 err = ps_pread(get_proc_handle(env, this_obj), (psaddr_t) (uintptr_t)addr, bufPtr, numBytes);
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280 (*env)->ReleaseByteArrayElements(env, array, bufPtr, 0);
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281 return (err == PS_OK)? array : 0;
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282 }
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283
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284 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_bsd_BsdDebuggerLocal_getThreadIntegerRegisterSet0
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285 (JNIEnv *env, jobject this_obj, jint lwp_id) {
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286
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287 struct reg gregs;
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288 jboolean isCopy;
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289 jlongArray array;
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290 jlong *regs;
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291
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292 struct ps_prochandle* ph = get_proc_handle(env, this_obj);
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293 if (get_lwp_regs(ph, lwp_id, &gregs) != true) {
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294 THROW_NEW_DEBUGGER_EXCEPTION_("get_thread_regs failed for a lwp", 0);
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295 }
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296
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297 #undef NPRGREG
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298 #ifdef i386
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299 #define NPRGREG sun_jvm_hotspot_debugger_x86_X86ThreadContext_NPRGREG
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300 #endif
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301 #ifdef ia64
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302 #define NPRGREG IA64_REG_COUNT
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303 #endif
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304 #ifdef amd64
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305 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG
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306 #endif
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307 #if defined(sparc) || defined(sparcv9)
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308 #define NPRGREG sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_NPRGREG
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309 #endif
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310
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311 array = (*env)->NewLongArray(env, NPRGREG);
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312 CHECK_EXCEPTION_(0);
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313 regs = (*env)->GetLongArrayElements(env, array, &isCopy);
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314
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315 #undef REG_INDEX
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316
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317 #ifdef i386
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318 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_x86_X86ThreadContext_##reg
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319
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320 regs[REG_INDEX(GS)] = (uintptr_t) gregs.r_gs;
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321 regs[REG_INDEX(FS)] = (uintptr_t) gregs.r_fs;
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322 regs[REG_INDEX(ES)] = (uintptr_t) gregs.r_es;
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323 regs[REG_INDEX(DS)] = (uintptr_t) gregs.r_ds;
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324 regs[REG_INDEX(EDI)] = (uintptr_t) gregs.r_edi;
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325 regs[REG_INDEX(ESI)] = (uintptr_t) gregs.r_esi;
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326 regs[REG_INDEX(FP)] = (uintptr_t) gregs.r_ebp;
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327 regs[REG_INDEX(SP)] = (uintptr_t) gregs.r_isp;
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328 regs[REG_INDEX(EBX)] = (uintptr_t) gregs.r_ebx;
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329 regs[REG_INDEX(EDX)] = (uintptr_t) gregs.r_edx;
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330 regs[REG_INDEX(ECX)] = (uintptr_t) gregs.r_ecx;
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331 regs[REG_INDEX(EAX)] = (uintptr_t) gregs.r_eax;
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332 regs[REG_INDEX(PC)] = (uintptr_t) gregs.r_eip;
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333 regs[REG_INDEX(CS)] = (uintptr_t) gregs.r_cs;
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334 regs[REG_INDEX(SS)] = (uintptr_t) gregs.r_ss;
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335
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336 #endif /* i386 */
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337
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338 #if ia64
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339 regs = (*env)->GetLongArrayElements(env, array, &isCopy);
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340 int i;
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341 for (i = 0; i < NPRGREG; i++ ) {
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342 regs[i] = 0xDEADDEAD;
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343 }
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344 #endif /* ia64 */
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345
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346 #ifdef amd64
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347 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg
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348
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349 regs[REG_INDEX(R15)] = gregs.r_r15;
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350 regs[REG_INDEX(R14)] = gregs.r_r14;
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351 regs[REG_INDEX(R13)] = gregs.r_r13;
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352 regs[REG_INDEX(R12)] = gregs.r_r12;
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353 regs[REG_INDEX(RBP)] = gregs.r_rbp;
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354 regs[REG_INDEX(RBX)] = gregs.r_rbx;
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355 regs[REG_INDEX(R11)] = gregs.r_r11;
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356 regs[REG_INDEX(R10)] = gregs.r_r10;
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357 regs[REG_INDEX(R9)] = gregs.r_r9;
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358 regs[REG_INDEX(R8)] = gregs.r_r8;
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359 regs[REG_INDEX(RAX)] = gregs.r_rax;
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360 regs[REG_INDEX(RCX)] = gregs.r_rcx;
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361 regs[REG_INDEX(RDX)] = gregs.r_rdx;
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362 regs[REG_INDEX(RSI)] = gregs.r_rsi;
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363 regs[REG_INDEX(RDI)] = gregs.r_rdi;
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364 regs[REG_INDEX(RIP)] = gregs.r_rip;
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365 regs[REG_INDEX(CS)] = gregs.r_cs;
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366 regs[REG_INDEX(RSP)] = gregs.r_rsp;
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367 regs[REG_INDEX(SS)] = gregs.r_ss;
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368 // regs[REG_INDEX(FSBASE)] = gregs.fs_base;
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369 // regs[REG_INDEX(GSBASE)] = gregs.gs_base;
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370 // regs[REG_INDEX(DS)] = gregs.ds;
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371 // regs[REG_INDEX(ES)] = gregs.es;
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372 // regs[REG_INDEX(FS)] = gregs.fs;
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373 // regs[REG_INDEX(GS)] = gregs.gs;
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374
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375 #endif /* amd64 */
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376
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377 #if defined(sparc) || defined(sparcv9)
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378
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379 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_##reg
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380
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381 #ifdef _LP64
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382 regs[REG_INDEX(R_PSR)] = gregs.tstate;
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383 regs[REG_INDEX(R_PC)] = gregs.tpc;
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384 regs[REG_INDEX(R_nPC)] = gregs.tnpc;
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385 regs[REG_INDEX(R_Y)] = gregs.y;
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386 #else
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387 regs[REG_INDEX(R_PSR)] = gregs.psr;
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388 regs[REG_INDEX(R_PC)] = gregs.pc;
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389 regs[REG_INDEX(R_nPC)] = gregs.npc;
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390 regs[REG_INDEX(R_Y)] = gregs.y;
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391 #endif
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392 regs[REG_INDEX(R_G0)] = 0 ;
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393 regs[REG_INDEX(R_G1)] = gregs.u_regs[0];
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394 regs[REG_INDEX(R_G2)] = gregs.u_regs[1];
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395 regs[REG_INDEX(R_G3)] = gregs.u_regs[2];
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396 regs[REG_INDEX(R_G4)] = gregs.u_regs[3];
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397 regs[REG_INDEX(R_G5)] = gregs.u_regs[4];
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398 regs[REG_INDEX(R_G6)] = gregs.u_regs[5];
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399 regs[REG_INDEX(R_G7)] = gregs.u_regs[6];
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400 regs[REG_INDEX(R_O0)] = gregs.u_regs[7];
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401 regs[REG_INDEX(R_O1)] = gregs.u_regs[8];
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402 regs[REG_INDEX(R_O2)] = gregs.u_regs[ 9];
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403 regs[REG_INDEX(R_O3)] = gregs.u_regs[10];
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404 regs[REG_INDEX(R_O4)] = gregs.u_regs[11];
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405 regs[REG_INDEX(R_O5)] = gregs.u_regs[12];
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406 regs[REG_INDEX(R_O6)] = gregs.u_regs[13];
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407 regs[REG_INDEX(R_O7)] = gregs.u_regs[14];
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408 #endif /* sparc */
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409
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410
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411 (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT);
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412 return array;
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413 }
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