1 /* |
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2 * Copyright (c) 2002, 2017, 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 amd64 |
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302 #define NPRGREG sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_NPRGREG |
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303 #endif |
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304 #if defined(sparc) || defined(sparcv9) |
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305 #define NPRGREG sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_NPRGREG |
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306 #endif |
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307 |
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308 array = (*env)->NewLongArray(env, NPRGREG); |
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309 CHECK_EXCEPTION_(0); |
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310 regs = (*env)->GetLongArrayElements(env, array, &isCopy); |
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311 |
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312 #undef REG_INDEX |
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313 |
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314 #ifdef i386 |
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315 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_x86_X86ThreadContext_##reg |
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316 |
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317 regs[REG_INDEX(GS)] = (uintptr_t) gregs.r_gs; |
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318 regs[REG_INDEX(FS)] = (uintptr_t) gregs.r_fs; |
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319 regs[REG_INDEX(ES)] = (uintptr_t) gregs.r_es; |
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320 regs[REG_INDEX(DS)] = (uintptr_t) gregs.r_ds; |
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321 regs[REG_INDEX(EDI)] = (uintptr_t) gregs.r_edi; |
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322 regs[REG_INDEX(ESI)] = (uintptr_t) gregs.r_esi; |
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323 regs[REG_INDEX(FP)] = (uintptr_t) gregs.r_ebp; |
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324 regs[REG_INDEX(SP)] = (uintptr_t) gregs.r_isp; |
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325 regs[REG_INDEX(EBX)] = (uintptr_t) gregs.r_ebx; |
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326 regs[REG_INDEX(EDX)] = (uintptr_t) gregs.r_edx; |
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327 regs[REG_INDEX(ECX)] = (uintptr_t) gregs.r_ecx; |
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328 regs[REG_INDEX(EAX)] = (uintptr_t) gregs.r_eax; |
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329 regs[REG_INDEX(PC)] = (uintptr_t) gregs.r_eip; |
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330 regs[REG_INDEX(CS)] = (uintptr_t) gregs.r_cs; |
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331 regs[REG_INDEX(SS)] = (uintptr_t) gregs.r_ss; |
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332 |
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333 #endif /* i386 */ |
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334 |
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335 #ifdef amd64 |
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336 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_amd64_AMD64ThreadContext_##reg |
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337 |
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338 regs[REG_INDEX(R15)] = gregs.r_r15; |
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339 regs[REG_INDEX(R14)] = gregs.r_r14; |
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340 regs[REG_INDEX(R13)] = gregs.r_r13; |
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341 regs[REG_INDEX(R12)] = gregs.r_r12; |
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342 regs[REG_INDEX(RBP)] = gregs.r_rbp; |
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343 regs[REG_INDEX(RBX)] = gregs.r_rbx; |
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344 regs[REG_INDEX(R11)] = gregs.r_r11; |
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345 regs[REG_INDEX(R10)] = gregs.r_r10; |
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346 regs[REG_INDEX(R9)] = gregs.r_r9; |
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347 regs[REG_INDEX(R8)] = gregs.r_r8; |
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348 regs[REG_INDEX(RAX)] = gregs.r_rax; |
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349 regs[REG_INDEX(RCX)] = gregs.r_rcx; |
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350 regs[REG_INDEX(RDX)] = gregs.r_rdx; |
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351 regs[REG_INDEX(RSI)] = gregs.r_rsi; |
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352 regs[REG_INDEX(RDI)] = gregs.r_rdi; |
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353 regs[REG_INDEX(RIP)] = gregs.r_rip; |
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354 regs[REG_INDEX(CS)] = gregs.r_cs; |
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355 regs[REG_INDEX(RSP)] = gregs.r_rsp; |
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356 regs[REG_INDEX(SS)] = gregs.r_ss; |
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357 // regs[REG_INDEX(FSBASE)] = gregs.fs_base; |
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358 // regs[REG_INDEX(GSBASE)] = gregs.gs_base; |
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359 // regs[REG_INDEX(DS)] = gregs.ds; |
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360 // regs[REG_INDEX(ES)] = gregs.es; |
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361 // regs[REG_INDEX(FS)] = gregs.fs; |
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362 // regs[REG_INDEX(GS)] = gregs.gs; |
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363 |
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364 #endif /* amd64 */ |
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365 |
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366 #if defined(sparc) || defined(sparcv9) |
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367 |
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368 #define REG_INDEX(reg) sun_jvm_hotspot_debugger_sparc_SPARCThreadContext_##reg |
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369 |
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370 #ifdef _LP64 |
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371 regs[REG_INDEX(R_PSR)] = gregs.tstate; |
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372 regs[REG_INDEX(R_PC)] = gregs.tpc; |
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373 regs[REG_INDEX(R_nPC)] = gregs.tnpc; |
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374 regs[REG_INDEX(R_Y)] = gregs.y; |
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375 #else |
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376 regs[REG_INDEX(R_PSR)] = gregs.psr; |
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377 regs[REG_INDEX(R_PC)] = gregs.pc; |
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378 regs[REG_INDEX(R_nPC)] = gregs.npc; |
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379 regs[REG_INDEX(R_Y)] = gregs.y; |
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380 #endif |
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381 regs[REG_INDEX(R_G0)] = 0 ; |
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382 regs[REG_INDEX(R_G1)] = gregs.u_regs[0]; |
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383 regs[REG_INDEX(R_G2)] = gregs.u_regs[1]; |
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384 regs[REG_INDEX(R_G3)] = gregs.u_regs[2]; |
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385 regs[REG_INDEX(R_G4)] = gregs.u_regs[3]; |
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386 regs[REG_INDEX(R_G5)] = gregs.u_regs[4]; |
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387 regs[REG_INDEX(R_G6)] = gregs.u_regs[5]; |
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388 regs[REG_INDEX(R_G7)] = gregs.u_regs[6]; |
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389 regs[REG_INDEX(R_O0)] = gregs.u_regs[7]; |
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390 regs[REG_INDEX(R_O1)] = gregs.u_regs[8]; |
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391 regs[REG_INDEX(R_O2)] = gregs.u_regs[ 9]; |
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392 regs[REG_INDEX(R_O3)] = gregs.u_regs[10]; |
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393 regs[REG_INDEX(R_O4)] = gregs.u_regs[11]; |
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394 regs[REG_INDEX(R_O5)] = gregs.u_regs[12]; |
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395 regs[REG_INDEX(R_O6)] = gregs.u_regs[13]; |
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396 regs[REG_INDEX(R_O7)] = gregs.u_regs[14]; |
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397 #endif /* sparc */ |
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398 |
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399 |
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400 (*env)->ReleaseLongArrayElements(env, array, regs, JNI_COMMIT); |
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401 return array; |
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402 } |
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