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0
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1 /*
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2 * Copyright 2002-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 #include "salibproc.h"
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26 #include "sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal.h"
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27 #include <thread_db.h>
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28 #include <strings.h>
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29 #include <limits.h>
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30 #include <demangle.h>
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31 #include <stdarg.h>
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32 #include <stdlib.h>
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33 #include <errno.h>
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34
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35 #define CHECK_EXCEPTION_(value) if(env->ExceptionOccurred()) { return value; }
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36 #define CHECK_EXCEPTION if(env->ExceptionOccurred()) { return;}
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37 #define THROW_NEW_DEBUGGER_EXCEPTION_(str, value) { throwNewDebuggerException(env, str); return value; }
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38 #define THROW_NEW_DEBUGGER_EXCEPTION(str) { throwNewDebuggerException(env, str); return;}
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39
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40 #define SYMBOL_BUF_SIZE 256
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41 #define ERR_MSG_SIZE (PATH_MAX + 256)
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42
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43 // debug mode
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44 static int _libsaproc_debug = 0;
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45
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46 static void print_debug(const char* format,...) {
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47 if (_libsaproc_debug) {
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48 va_list alist;
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49
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50 va_start(alist, format);
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51 fputs("libsaproc DEBUG: ", stderr);
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52 vfprintf(stderr, format, alist);
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53 va_end(alist);
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54 }
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55 }
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56
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57 struct Debugger {
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58 JNIEnv* env;
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59 jobject this_obj;
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60 };
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61
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62 struct DebuggerWithObject : Debugger {
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63 jobject obj;
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64 };
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65
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66 struct DebuggerWith2Objects : DebuggerWithObject {
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67 jobject obj2;
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68 };
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69
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70 /*
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71 * Portions of user thread level detail gathering code is from pstack source
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72 * code. See pstack.c in Solaris 2.8 user commands source code.
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73 */
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74
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75 static void throwNewDebuggerException(JNIEnv* env, const char* errMsg) {
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76 env->ThrowNew(env->FindClass("sun/jvm/hotspot/debugger/DebuggerException"), errMsg);
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77 }
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78
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79 // JNI ids for some fields, methods
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80
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81 // libproc handler pointer
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82 static jfieldID p_ps_prochandle_ID = 0;
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83
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84 // libthread.so dlopen handle, thread agent ptr and function pointers
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85 static jfieldID libthread_db_handle_ID = 0;
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86 static jfieldID p_td_thragent_t_ID = 0;
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87 static jfieldID p_td_init_ID = 0;
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88 static jfieldID p_td_ta_new_ID = 0;
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89 static jfieldID p_td_ta_delete_ID = 0;
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90 static jfieldID p_td_ta_thr_iter_ID = 0;
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91 static jfieldID p_td_thr_get_info_ID = 0;
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92 static jfieldID p_td_ta_map_id2thr_ID = 0;
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93 static jfieldID p_td_thr_getgregs_ID = 0;
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94
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95 // reg index fields
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96 static jfieldID pcRegIndex_ID = 0;
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97 static jfieldID fpRegIndex_ID = 0;
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98
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99 // part of the class sharing workaround
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100 static jfieldID classes_jsa_fd_ID = 0;
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101 static jfieldID p_file_map_header_ID = 0;
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102
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103 // method ids
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104
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105 static jmethodID getThreadForThreadId_ID = 0;
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106 static jmethodID createSenderFrame_ID = 0;
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107 static jmethodID createLoadObject_ID = 0;
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108 static jmethodID createClosestSymbol_ID = 0;
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109 static jmethodID listAdd_ID = 0;
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110
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111 /*
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112 * Functions we need from libthread_db
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113 */
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114 typedef td_err_e
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115 (*p_td_init_t)(void);
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116 typedef td_err_e
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117 (*p_td_ta_new_t)(void *, td_thragent_t **);
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118 typedef td_err_e
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119 (*p_td_ta_delete_t)(td_thragent_t *);
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120 typedef td_err_e
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121 (*p_td_ta_thr_iter_t)(const td_thragent_t *, td_thr_iter_f *, void *,
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122 td_thr_state_e, int, sigset_t *, unsigned);
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123 typedef td_err_e
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124 (*p_td_thr_get_info_t)(const td_thrhandle_t *, td_thrinfo_t *);
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125 typedef td_err_e
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126 (*p_td_ta_map_id2thr_t)(const td_thragent_t *, thread_t, td_thrhandle_t *);
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127 typedef td_err_e
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128 (*p_td_thr_getgregs_t)(const td_thrhandle_t *, prgregset_t);
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129
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130 static void
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131 clear_libthread_db_ptrs(JNIEnv* env, jobject this_obj) {
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132 // release libthread_db agent, if we had created
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133 p_td_ta_delete_t p_td_ta_delete = 0;
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134 p_td_ta_delete = (p_td_ta_delete_t) env->GetLongField(this_obj, p_td_ta_delete_ID);
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135
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136 td_thragent_t *p_td_thragent_t = 0;
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137 p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
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138 if (p_td_thragent_t != 0 && p_td_ta_delete != 0) {
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139 p_td_ta_delete(p_td_thragent_t);
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140 }
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141
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142 // dlclose libthread_db.so
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143 void* libthread_db_handle = (void*) env->GetLongField(this_obj, libthread_db_handle_ID);
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144 if (libthread_db_handle != 0) {
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145 dlclose(libthread_db_handle);
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146 }
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147
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148 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)0);
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149 env->SetLongField(this_obj, p_td_init_ID, (jlong)0);
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150 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)0);
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151 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)0);
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152 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)0);
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153 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)0);
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154 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)0);
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155 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)0);
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156 }
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157
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158
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159 static void detach_internal(JNIEnv* env, jobject this_obj) {
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160 // clear libthread_db stuff
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161 clear_libthread_db_ptrs(env, this_obj);
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162
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163 // release ptr to ps_prochandle
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164 jlong p_ps_prochandle;
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165 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
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166 if (p_ps_prochandle != 0L) {
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167 Prelease((struct ps_prochandle*) p_ps_prochandle, PRELEASE_CLEAR);
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168 }
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169
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170 // part of the class sharing workaround
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171 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
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172 if (classes_jsa_fd != -1) {
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173 close(classes_jsa_fd);
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174 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
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175 if (pheader != NULL) {
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176 free(pheader);
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177 }
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178 }
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179 }
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180
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181 // Is it okay to ignore libthread_db failure? Set env var to ignore
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182 // libthread_db failure. You can still debug, but will miss threads
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183 // related functionality.
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184 static bool sa_ignore_threaddb = (getenv("SA_IGNORE_THREADDB") != 0);
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185
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186 #define HANDLE_THREADDB_FAILURE(msg) \
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187 if (sa_ignore_threaddb) { \
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188 printf("libsaproc WARNING: %s\n", msg); \
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189 return; \
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190 } else { \
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191 THROW_NEW_DEBUGGER_EXCEPTION(msg); \
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192 }
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193
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194 #define HANDLE_THREADDB_FAILURE_(msg, ret) \
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195 if (sa_ignore_threaddb) { \
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196 printf("libsaproc WARNING: %s\n", msg); \
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197 return ret; \
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198 } else { \
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199 THROW_NEW_DEBUGGER_EXCEPTION_(msg, ret); \
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200 }
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201
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202 static const char * alt_root = NULL;
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203 static int alt_root_len = -1;
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204
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205 #define SA_ALTROOT "SA_ALTROOT"
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206
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207 static void init_alt_root() {
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208 if (alt_root_len == -1) {
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209 alt_root = getenv(SA_ALTROOT);
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210 if (alt_root)
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211 alt_root_len = strlen(alt_root);
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212 else
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213 alt_root_len = 0;
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214 }
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215 }
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216
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217 static int find_file_hook(const char * name, int elf_checksum) {
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218 init_alt_root();
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219
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220 if (_libsaproc_debug) {
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221 printf("libsaproc DEBUG: find_file_hook %s 0x%x\n", name, elf_checksum);
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222 }
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223
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224 if (alt_root_len > 0) {
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225 int fd = -1;
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226 char alt_path[PATH_MAX+1];
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227
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228 strcpy(alt_path, alt_root);
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229 strcat(alt_path, name);
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230 fd = open(alt_path, O_RDONLY);
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231 if (fd >= 0) {
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232 if (_libsaproc_debug) {
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233 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path);
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234 }
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235 return fd;
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236 }
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237
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238 if (strrchr(name, '/')) {
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239 strcpy(alt_path, alt_root);
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240 strcat(alt_path, strrchr(name, '/'));
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241 fd = open(alt_path, O_RDONLY);
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242 if (fd >= 0) {
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243 if (_libsaproc_debug) {
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244 printf("libsaproc DEBUG: find_file_hook substituted %s\n", alt_path);
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245 }
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246 return fd;
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247 }
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248 }
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249 }
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250 return -1;
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251 }
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252
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253 static int pathmap_open(const char* name) {
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254 int fd = open(name, O_RDONLY);
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255 if (fd < 0) {
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256 fd = find_file_hook(name, 0);
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257 }
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258 return fd;
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259 }
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260
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261 static void * pathmap_dlopen(const char * name, int mode) {
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262 init_alt_root();
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263
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264 if (_libsaproc_debug) {
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265 printf("libsaproc DEBUG: pathmap_dlopen %s\n", name);
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266 }
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267
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268 void * handle = NULL;
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269 if (alt_root_len > 0) {
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270 char alt_path[PATH_MAX+1];
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271 strcpy(alt_path, alt_root);
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272 strcat(alt_path, name);
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273 handle = dlopen(alt_path, mode);
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274 if (_libsaproc_debug && handle) {
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275 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
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276 }
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277
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278 if (handle == NULL && strrchr(name, '/')) {
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279 strcpy(alt_path, alt_root);
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280 strcat(alt_path, strrchr(name, '/'));
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281 handle = dlopen(alt_path, mode);
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282 if (_libsaproc_debug && handle) {
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283 printf("libsaproc DEBUG: pathmap_dlopen substituted %s\n", alt_path);
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284 }
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285 }
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286 }
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287 if (handle == NULL) {
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288 handle = dlopen(name, mode);
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289 }
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290 if (_libsaproc_debug) {
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291 printf("libsaproc DEBUG: pathmap_dlopen %s return 0x%x\n", name, handle);
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292 }
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293 return handle;
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294 }
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295
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296 // libproc and libthread_db callback functions
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297
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298 extern "C" {
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299
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300 static int
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301 init_libthread_db_ptrs(void *cd, const prmap_t *pmp, const char *object_name) {
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302 Debugger* dbg = (Debugger*) cd;
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303 JNIEnv* env = dbg->env;
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304 jobject this_obj = dbg->this_obj;
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305 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
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306
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307 char *s1 = 0, *s2 = 0;
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308 char libthread_db[PATH_MAX];
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309
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310 if (strstr(object_name, "/libthread.so.") == NULL)
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311 return (0);
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312
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313 /*
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314 * We found a libthread.
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315 * dlopen() the matching libthread_db and get the thread agent handle.
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316 */
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317 if (Pstatus(ph)->pr_dmodel == PR_MODEL_NATIVE) {
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318 (void) strcpy(libthread_db, object_name);
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319 s1 = (char*) strstr(object_name, ".so.");
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320 s2 = (char*) strstr(libthread_db, ".so.");
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321 (void) strcpy(s2, "_db");
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322 s2 += 3;
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323 (void) strcpy(s2, s1);
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324 } else {
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325 #ifdef _LP64
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326 /*
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327 * The victim process is 32-bit, we are 64-bit.
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328 * We have to find the 64-bit version of libthread_db
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329 * that matches the victim's 32-bit version of libthread.
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330 */
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331 (void) strcpy(libthread_db, object_name);
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332 s1 = (char*) strstr(object_name, "/libthread.so.");
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333 s2 = (char*) strstr(libthread_db, "/libthread.so.");
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334 (void) strcpy(s2, "/64");
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335 s2 += 3;
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336 (void) strcpy(s2, s1);
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337 s1 = (char*) strstr(s1, ".so.");
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338 s2 = (char*) strstr(s2, ".so.");
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339 (void) strcpy(s2, "_db");
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340 s2 += 3;
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341 (void) strcpy(s2, s1);
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342 #else
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343 return (0);
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344 #endif /* _LP64 */
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345 }
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346
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347 void* libthread_db_handle = 0;
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348 if ((libthread_db_handle = pathmap_dlopen(libthread_db, RTLD_LAZY|RTLD_LOCAL)) == NULL) {
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349 char errMsg[PATH_MAX + 256];
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350 sprintf(errMsg, "Can't load %s!", libthread_db);
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351 HANDLE_THREADDB_FAILURE_(errMsg, 0);
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352 }
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353 env->SetLongField(this_obj, libthread_db_handle_ID, (jlong)(uintptr_t)libthread_db_handle);
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354
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355 void* tmpPtr = 0;
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356 tmpPtr = dlsym(libthread_db_handle, "td_init");
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357 if (tmpPtr == 0) {
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358 HANDLE_THREADDB_FAILURE_("dlsym failed on td_init!", 0);
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359 }
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360 env->SetLongField(this_obj, p_td_init_ID, (jlong)(uintptr_t) tmpPtr);
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361
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362 tmpPtr =dlsym(libthread_db_handle, "td_ta_new");
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363 if (tmpPtr == 0) {
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364 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_new!", 0);
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365 }
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366 env->SetLongField(this_obj, p_td_ta_new_ID, (jlong)(uintptr_t) tmpPtr);
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367
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368 tmpPtr = dlsym(libthread_db_handle, "td_ta_delete");
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369 if (tmpPtr == 0) {
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370 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_delete!", 0);
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371 }
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|
|
372 env->SetLongField(this_obj, p_td_ta_delete_ID, (jlong)(uintptr_t) tmpPtr);
|
|
|
373
|
|
|
374 tmpPtr = dlsym(libthread_db_handle, "td_ta_thr_iter");
|
|
|
375 if (tmpPtr == 0) {
|
|
|
376 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_thr_iter!", 0);
|
|
|
377 }
|
|
|
378 env->SetLongField(this_obj, p_td_ta_thr_iter_ID, (jlong)(uintptr_t) tmpPtr);
|
|
|
379
|
|
|
380 tmpPtr = dlsym(libthread_db_handle, "td_thr_get_info");
|
|
|
381 if (tmpPtr == 0) {
|
|
|
382 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_get_info!", 0);
|
|
|
383 }
|
|
|
384 env->SetLongField(this_obj, p_td_thr_get_info_ID, (jlong)(uintptr_t) tmpPtr);
|
|
|
385
|
|
|
386 tmpPtr = dlsym(libthread_db_handle, "td_ta_map_id2thr");
|
|
|
387 if (tmpPtr == 0) {
|
|
|
388 HANDLE_THREADDB_FAILURE_("dlsym failed on td_ta_map_id2thr!", 0);
|
|
|
389 }
|
|
|
390 env->SetLongField(this_obj, p_td_ta_map_id2thr_ID, (jlong)(uintptr_t) tmpPtr);
|
|
|
391
|
|
|
392 tmpPtr = dlsym(libthread_db_handle, "td_thr_getgregs");
|
|
|
393 if (tmpPtr == 0) {
|
|
|
394 HANDLE_THREADDB_FAILURE_("dlsym failed on td_thr_getgregs!", 0);
|
|
|
395 }
|
|
|
396 env->SetLongField(this_obj, p_td_thr_getgregs_ID, (jlong)(uintptr_t) tmpPtr);
|
|
|
397
|
|
|
398 return 1;
|
|
|
399 }
|
|
|
400
|
|
|
401 static int
|
|
|
402 fill_thread_list(const td_thrhandle_t *p_td_thragent_t, void* cd) {
|
|
|
403 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
|
|
|
404 JNIEnv* env = dbgo->env;
|
|
|
405 jobject this_obj = dbgo->this_obj;
|
|
|
406 jobject list = dbgo->obj;
|
|
|
407
|
|
|
408 td_thrinfo_t thrinfo;
|
|
|
409 p_td_thr_get_info_t p_td_thr_get_info = (p_td_thr_get_info_t) env->GetLongField(this_obj, p_td_thr_get_info_ID);
|
|
|
410
|
|
|
411 if (p_td_thr_get_info(p_td_thragent_t, &thrinfo) != TD_OK)
|
|
|
412 return (0);
|
|
|
413
|
|
|
414 jobject threadProxy = env->CallObjectMethod(this_obj, getThreadForThreadId_ID, (jlong)(uintptr_t) thrinfo.ti_tid);
|
|
|
415 CHECK_EXCEPTION_(1);
|
|
|
416 env->CallBooleanMethod(list, listAdd_ID, threadProxy);
|
|
|
417 CHECK_EXCEPTION_(1);
|
|
|
418 return 0;
|
|
|
419 }
|
|
|
420
|
|
|
421 static int
|
|
|
422 fill_load_object_list(void *cd, const prmap_t* pmp, const char* obj_name) {
|
|
|
423
|
|
|
424 if (obj_name) {
|
|
|
425 DebuggerWithObject* dbgo = (DebuggerWithObject*) cd;
|
|
|
426 JNIEnv* env = dbgo->env;
|
|
|
427 jobject this_obj = dbgo->this_obj;
|
|
|
428 jobject list = dbgo->obj;
|
|
|
429
|
|
|
430 jstring objectName = env->NewStringUTF(obj_name);
|
|
|
431 CHECK_EXCEPTION_(1);
|
|
|
432
|
|
|
433 jlong mapSize = (jlong) pmp->pr_size;
|
|
|
434 jobject sharedObject = env->CallObjectMethod(this_obj, createLoadObject_ID,
|
|
|
435 objectName, mapSize, (jlong)(uintptr_t)pmp->pr_vaddr);
|
|
|
436 CHECK_EXCEPTION_(1);
|
|
|
437 env->CallBooleanMethod(list, listAdd_ID, sharedObject);
|
|
|
438 CHECK_EXCEPTION_(1);
|
|
|
439 }
|
|
|
440
|
|
|
441 return 0;
|
|
|
442 }
|
|
|
443
|
|
|
444 static int
|
|
|
445 fill_cframe_list(void *cd, const prgregset_t regs, uint_t argc, const long *argv) {
|
|
|
446 DebuggerWith2Objects* dbgo2 = (DebuggerWith2Objects*) cd;
|
|
|
447 JNIEnv* env = dbgo2->env;
|
|
|
448 jobject this_obj = dbgo2->this_obj;
|
|
|
449 jobject curFrame = dbgo2->obj2;
|
|
|
450
|
|
|
451 jint pcRegIndex = env->GetIntField(this_obj, pcRegIndex_ID);
|
|
|
452 jint fpRegIndex = env->GetIntField(this_obj, fpRegIndex_ID);
|
|
|
453
|
|
|
454 jlong pc = (jlong) (uintptr_t) regs[pcRegIndex];
|
|
|
455 jlong fp = (jlong) (uintptr_t) regs[fpRegIndex];
|
|
|
456
|
|
|
457 dbgo2->obj2 = env->CallObjectMethod(this_obj, createSenderFrame_ID,
|
|
|
458 curFrame, pc, fp);
|
|
|
459 CHECK_EXCEPTION_(1);
|
|
|
460 if (dbgo2->obj == 0) {
|
|
|
461 dbgo2->obj = dbgo2->obj2;
|
|
|
462 }
|
|
|
463 return 0;
|
|
|
464 }
|
|
|
465
|
|
|
466 // part of the class sharing workaround
|
|
|
467
|
|
|
468 // FIXME: !!HACK ALERT!!
|
|
|
469
|
|
|
470 // The format of sharing achive file header is needed to read shared heap
|
|
|
471 // file mappings. For now, I am hard coding portion of FileMapHeader here.
|
|
|
472 // Refer to filemap.hpp.
|
|
|
473
|
|
|
474 // FileMapHeader describes the shared space data in the file to be
|
|
|
475 // mapped. This structure gets written to a file. It is not a class, so
|
|
|
476 // that the compilers don't add any compiler-private data to it.
|
|
|
477
|
|
|
478 // Refer to CompactingPermGenGen::n_regions in compactingPermGenGen.hpp
|
|
|
479 const int NUM_SHARED_MAPS = 4;
|
|
|
480
|
|
|
481 // Refer to FileMapInfo::_current_version in filemap.hpp
|
|
|
482 const int CURRENT_ARCHIVE_VERSION = 1;
|
|
|
483
|
|
|
484 struct FileMapHeader {
|
|
|
485 int _magic; // identify file type.
|
|
|
486 int _version; // (from enum, above.)
|
|
|
487 size_t _alignment; // how shared archive should be aligned
|
|
|
488
|
|
|
489
|
|
|
490 struct space_info {
|
|
|
491 int _file_offset; // sizeof(this) rounded to vm page size
|
|
|
492 char* _base; // copy-on-write base address
|
|
|
493 size_t _capacity; // for validity checking
|
|
|
494 size_t _used; // for setting space top on read
|
|
|
495
|
|
|
496 bool _read_only; // read only space?
|
|
|
497 bool _allow_exec; // executable code in space?
|
|
|
498
|
|
|
499 } _space[NUM_SHARED_MAPS]; // was _space[CompactingPermGenGen::n_regions];
|
|
|
500
|
|
|
501 // Ignore the rest of the FileMapHeader. We don't need those fields here.
|
|
|
502 };
|
|
|
503
|
|
|
504 static bool
|
|
|
505 read_int(struct ps_prochandle* ph, psaddr_t addr, int* pvalue) {
|
|
|
506 int i;
|
|
|
507 if (ps_pread(ph, addr, &i, sizeof(i)) == PS_OK) {
|
|
|
508 *pvalue = i;
|
|
|
509 return true;
|
|
|
510 } else {
|
|
|
511 return false;
|
|
|
512 }
|
|
|
513 }
|
|
|
514
|
|
|
515 static bool
|
|
|
516 read_pointer(struct ps_prochandle* ph, psaddr_t addr, uintptr_t* pvalue) {
|
|
|
517 uintptr_t uip;
|
|
|
518 if (ps_pread(ph, addr, &uip, sizeof(uip)) == PS_OK) {
|
|
|
519 *pvalue = uip;
|
|
|
520 return true;
|
|
|
521 } else {
|
|
|
522 return false;
|
|
|
523 }
|
|
|
524 }
|
|
|
525
|
|
|
526 static bool
|
|
|
527 read_string(struct ps_prochandle* ph, psaddr_t addr, char* buf, size_t size) {
|
|
|
528 char ch = ' ';
|
|
|
529 size_t i = 0;
|
|
|
530
|
|
|
531 while (ch != '\0') {
|
|
|
532 if (ps_pread(ph, addr, &ch, sizeof(ch)) != PS_OK)
|
|
|
533 return false;
|
|
|
534
|
|
|
535 if (i < size - 1) {
|
|
|
536 buf[i] = ch;
|
|
|
537 } else { // smaller buffer
|
|
|
538 return false;
|
|
|
539 }
|
|
|
540
|
|
|
541 i++; addr++;
|
|
|
542 }
|
|
|
543
|
|
|
544 buf[i] = '\0';
|
|
|
545 return true;
|
|
|
546 }
|
|
|
547
|
|
|
548 #define USE_SHARED_SPACES_SYM "UseSharedSpaces"
|
|
|
549 // mangled symbol name for Arguments::SharedArchivePath
|
|
|
550 #define SHARED_ARCHIVE_PATH_SYM "__1cJArgumentsRSharedArchivePath_"
|
|
|
551
|
|
|
552 static int
|
|
|
553 init_classsharing_workaround(void *cd, const prmap_t* pmap, const char* obj_name) {
|
|
|
554 Debugger* dbg = (Debugger*) cd;
|
|
|
555 JNIEnv* env = dbg->env;
|
|
|
556 jobject this_obj = dbg->this_obj;
|
|
|
557 const char* jvm_name = 0;
|
|
|
558 if ((jvm_name = strstr(obj_name, "libjvm.so")) != NULL ||
|
|
|
559 (jvm_name = strstr(obj_name, "libjvm_g.so")) != NULL) {
|
|
|
560 jvm_name = obj_name;
|
|
|
561 } else {
|
|
|
562 return 0;
|
|
|
563 }
|
|
|
564
|
|
|
565 struct ps_prochandle* ph = (struct ps_prochandle*) env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
566
|
|
|
567 // initialize classes[_g].jsa file descriptor field.
|
|
|
568 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, -1);
|
|
|
569
|
|
|
570 // check whether class sharing is on by reading variable "UseSharedSpaces"
|
|
|
571 psaddr_t useSharedSpacesAddr = 0;
|
|
|
572 ps_pglobal_lookup(ph, jvm_name, USE_SHARED_SPACES_SYM, &useSharedSpacesAddr);
|
|
|
573 if (useSharedSpacesAddr == 0) {
|
|
|
574 THROW_NEW_DEBUGGER_EXCEPTION_("can't find 'UseSharedSpaces' flag\n", 1);
|
|
|
575 }
|
|
|
576
|
|
|
577 // read the value of the flag "UseSharedSpaces"
|
|
|
578 int value = 0;
|
|
|
579 if (read_int(ph, useSharedSpacesAddr, &value) != true) {
|
|
|
580 THROW_NEW_DEBUGGER_EXCEPTION_("can't read 'UseSharedSpaces' flag", 1);
|
|
|
581 } else if (value == 0) {
|
|
|
582 print_debug("UseSharedSpaces is false, assuming -Xshare:off!\n");
|
|
|
583 return 1;
|
|
|
584 }
|
|
|
585
|
|
|
586 char classes_jsa[PATH_MAX];
|
|
|
587 psaddr_t sharedArchivePathAddrAddr = 0;
|
|
|
588 ps_pglobal_lookup(ph, jvm_name, SHARED_ARCHIVE_PATH_SYM, &sharedArchivePathAddrAddr);
|
|
|
589 if (sharedArchivePathAddrAddr == 0) {
|
|
|
590 print_debug("can't find symbol 'Arguments::SharedArchivePath'\n");
|
|
|
591 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
|
|
|
592 }
|
|
|
593
|
|
|
594 uintptr_t sharedArchivePathAddr = 0;
|
|
|
595 if (read_pointer(ph, sharedArchivePathAddrAddr, &sharedArchivePathAddr) != true) {
|
|
|
596 print_debug("can't find read pointer 'Arguments::SharedArchivePath'\n");
|
|
|
597 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
|
|
|
598 }
|
|
|
599
|
|
|
600 if (read_string(ph, (psaddr_t)sharedArchivePathAddr, classes_jsa, sizeof(classes_jsa)) != true) {
|
|
|
601 print_debug("can't find read 'Arguments::SharedArchivePath' value\n");
|
|
|
602 THROW_NEW_DEBUGGER_EXCEPTION_("can't get shared archive path from debuggee", 1);
|
|
|
603 }
|
|
|
604
|
|
|
605 print_debug("looking for %s\n", classes_jsa);
|
|
|
606
|
|
|
607 // open the classes[_g].jsa
|
|
|
608 int fd = pathmap_open(classes_jsa);
|
|
|
609 if (fd < 0) {
|
|
|
610 char errMsg[ERR_MSG_SIZE];
|
|
|
611 sprintf(errMsg, "can't open shared archive file %s", classes_jsa);
|
|
|
612 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
|
|
|
613 } else {
|
|
|
614 print_debug("opened shared archive file %s\n", classes_jsa);
|
|
|
615 }
|
|
|
616
|
|
|
617 // parse classes[_g].jsa
|
|
|
618 struct FileMapHeader* pheader = (struct FileMapHeader*) malloc(sizeof(struct FileMapHeader));
|
|
|
619 if (pheader == NULL) {
|
|
|
620 close(fd);
|
|
|
621 THROW_NEW_DEBUGGER_EXCEPTION_("can't allocate memory for shared file map header", 1);
|
|
|
622 }
|
|
|
623
|
|
|
624 memset(pheader, 0, sizeof(struct FileMapHeader));
|
|
|
625 // read FileMapHeader
|
|
|
626 size_t n = read(fd, pheader, sizeof(struct FileMapHeader));
|
|
|
627 if (n != sizeof(struct FileMapHeader)) {
|
|
|
628 free(pheader);
|
|
|
629 close(fd);
|
|
|
630 char errMsg[ERR_MSG_SIZE];
|
|
|
631 sprintf(errMsg, "unable to read shared archive file map header from %s", classes_jsa);
|
|
|
632 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
|
|
|
633 }
|
|
|
634
|
|
|
635 // check file magic
|
|
|
636 if (pheader->_magic != 0xf00baba2) {
|
|
|
637 free(pheader);
|
|
|
638 close(fd);
|
|
|
639 char errMsg[ERR_MSG_SIZE];
|
|
|
640 sprintf(errMsg, "%s has bad shared archive magic 0x%x, expecting 0xf00baba2",
|
|
|
641 classes_jsa, pheader->_magic);
|
|
|
642 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
|
|
|
643 }
|
|
|
644
|
|
|
645 // check version
|
|
|
646 if (pheader->_version != CURRENT_ARCHIVE_VERSION) {
|
|
|
647 free(pheader);
|
|
|
648 close(fd);
|
|
|
649 char errMsg[ERR_MSG_SIZE];
|
|
|
650 sprintf(errMsg, "%s has wrong shared archive version %d, expecting %d",
|
|
|
651 classes_jsa, pheader->_version, CURRENT_ARCHIVE_VERSION);
|
|
|
652 THROW_NEW_DEBUGGER_EXCEPTION_(errMsg, 1);
|
|
|
653 }
|
|
|
654
|
|
|
655 if (_libsaproc_debug) {
|
|
|
656 for (int m = 0; m < NUM_SHARED_MAPS; m++) {
|
|
|
657 print_debug("shared file offset %d mapped at 0x%lx, size = %ld, read only? = %d\n",
|
|
|
658 pheader->_space[m]._file_offset, pheader->_space[m]._base,
|
|
|
659 pheader->_space[m]._used, pheader->_space[m]._read_only);
|
|
|
660 }
|
|
|
661 }
|
|
|
662
|
|
|
663 // FIXME: For now, omitting other checks such as VM version etc.
|
|
|
664
|
|
|
665 // store class archive file fd and map header in debugger object fields
|
|
|
666 dbg->env->SetIntField(this_obj, classes_jsa_fd_ID, fd);
|
|
|
667 dbg->env->SetLongField(this_obj, p_file_map_header_ID, (jlong)(uintptr_t) pheader);
|
|
|
668 return 1;
|
|
|
669 }
|
|
|
670
|
|
|
671 } // extern "C"
|
|
|
672
|
|
|
673 // error messages for proc_arg_grab failure codes. The messages are
|
|
|
674 // modified versions of comments against corresponding #defines in
|
|
|
675 // libproc.h.
|
|
|
676 static const char* proc_arg_grab_errmsgs[] = {
|
|
|
677 "",
|
|
|
678 /* G_NOPROC */ "No such process",
|
|
|
679 /* G_NOCORE */ "No such core file",
|
|
|
680 /* G_NOPROCORCORE */ "No such process or core",
|
|
|
681 /* G_NOEXEC */ "Cannot locate executable file",
|
|
|
682 /* G_ZOMB */ "Zombie processs",
|
|
|
683 /* G_PERM */ "No permission to attach",
|
|
|
684 /* G_BUSY */ "Another process has already attached",
|
|
|
685 /* G_SYS */ "System process - can not attach",
|
|
|
686 /* G_SELF */ "Process is self - can't debug myself!",
|
|
|
687 /* G_INTR */ "Interrupt received while grabbing",
|
|
|
688 /* G_LP64 */ "debuggee is 64 bit, use java -d64 for debugger",
|
|
|
689 /* G_FORMAT */ "File is not an ELF format core file - corrupted core?",
|
|
|
690 /* G_ELF */ "Libelf error while parsing an ELF file",
|
|
|
691 /* G_NOTE */ "Required PT_NOTE Phdr not present - corrupted core?",
|
|
|
692 };
|
|
|
693
|
|
|
694 static void attach_internal(JNIEnv* env, jobject this_obj, jstring cmdLine, jboolean isProcess) {
|
|
|
695 jboolean isCopy;
|
|
|
696 int gcode;
|
|
|
697 const char* cmdLine_cstr = env->GetStringUTFChars(cmdLine, &isCopy);
|
|
|
698 CHECK_EXCEPTION;
|
|
|
699
|
|
|
700 // some older versions of libproc.so crash when trying to attach 32 bit
|
|
|
701 // debugger to 64 bit core file. check and throw error.
|
|
|
702 #ifndef _LP64
|
|
|
703 atoi(cmdLine_cstr);
|
|
|
704 if (errno) {
|
|
|
705 // core file
|
|
|
706 int core_fd;
|
|
|
707 if ((core_fd = open64(cmdLine_cstr, O_RDONLY)) >= 0) {
|
|
|
708 Elf32_Ehdr e32;
|
|
|
709 if (pread64(core_fd, &e32, sizeof (e32), 0) == sizeof (e32) &&
|
|
|
710 memcmp(&e32.e_ident[EI_MAG0], ELFMAG, SELFMAG) == 0 &&
|
|
|
711 e32.e_type == ET_CORE && e32.e_ident[EI_CLASS] == ELFCLASS64) {
|
|
|
712 close(core_fd);
|
|
|
713 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 64 bit, use java -d64 for debugger");
|
|
|
714 }
|
|
|
715 close(core_fd);
|
|
|
716 }
|
|
|
717 // all other conditions are handled by libproc.so.
|
|
|
718 }
|
|
|
719 #endif
|
|
|
720
|
|
|
721 // connect to process/core
|
|
|
722 struct ps_prochandle* ph = proc_arg_grab(cmdLine_cstr, (isProcess? PR_ARG_PIDS : PR_ARG_CORES), PGRAB_FORCE, &gcode);
|
|
|
723 env->ReleaseStringUTFChars(cmdLine, cmdLine_cstr);
|
|
|
724 if (! ph) {
|
|
|
725 if (gcode > 0 && gcode < sizeof(proc_arg_grab_errmsgs)/sizeof(const char*)) {
|
|
|
726 char errMsg[ERR_MSG_SIZE];
|
|
|
727 sprintf(errMsg, "Attach failed : %s", proc_arg_grab_errmsgs[gcode]);
|
|
|
728 THROW_NEW_DEBUGGER_EXCEPTION(errMsg);
|
|
|
729 } else {
|
|
|
730 if (_libsaproc_debug && gcode == G_STRANGE) {
|
|
|
731 perror("libsaproc DEBUG: ");
|
|
|
732 }
|
|
|
733 if (isProcess) {
|
|
|
734 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to process!");
|
|
|
735 } else {
|
|
|
736 THROW_NEW_DEBUGGER_EXCEPTION("Not able to attach to core file!");
|
|
|
737 }
|
|
|
738 }
|
|
|
739 }
|
|
|
740
|
|
|
741 // even though libproc.so supports 64 bit debugger and 32 bit debuggee, we don't
|
|
|
742 // support such cross-bit-debugging. check for that combination and throw error.
|
|
|
743 #ifdef _LP64
|
|
|
744 int data_model;
|
|
|
745 if (ps_pdmodel(ph, &data_model) != PS_OK) {
|
|
|
746 Prelease(ph, PRELEASE_CLEAR);
|
|
|
747 THROW_NEW_DEBUGGER_EXCEPTION("can't determine debuggee data model (ILP32? or LP64?)");
|
|
|
748 }
|
|
|
749 if (data_model == PR_MODEL_ILP32) {
|
|
|
750 Prelease(ph, PRELEASE_CLEAR);
|
|
|
751 THROW_NEW_DEBUGGER_EXCEPTION("debuggee is 32 bit, use 32 bit java for debugger");
|
|
|
752 }
|
|
|
753 #endif
|
|
|
754
|
|
|
755 env->SetLongField(this_obj, p_ps_prochandle_ID, (jlong)(uintptr_t)ph);
|
|
|
756
|
|
|
757 Debugger dbg;
|
|
|
758 dbg.env = env;
|
|
|
759 dbg.this_obj = this_obj;
|
|
|
760 jthrowable exception = 0;
|
|
|
761 if (! isProcess) {
|
|
|
762 /*
|
|
|
763 * With class sharing, shared perm. gen heap is allocated in with MAP_SHARED|PROT_READ.
|
|
|
764 * These pages are mapped from the file "classes[_g].jsa". MAP_SHARED pages are not dumped
|
|
|
765 * in Solaris core.To read shared heap pages, we have to read classes[_g].jsa file.
|
|
|
766 */
|
|
|
767 Pobject_iter(ph, init_classsharing_workaround, &dbg);
|
|
|
768 exception = env->ExceptionOccurred();
|
|
|
769 if (exception) {
|
|
|
770 env->ExceptionClear();
|
|
|
771 detach_internal(env, this_obj);
|
|
|
772 env->Throw(exception);
|
|
|
773 return;
|
|
|
774 }
|
|
|
775 }
|
|
|
776
|
|
|
777 /*
|
|
|
778 * Iterate over the process mappings looking
|
|
|
779 * for libthread and then dlopen the appropriate
|
|
|
780 * libthread_db and get function pointers.
|
|
|
781 */
|
|
|
782 Pobject_iter(ph, init_libthread_db_ptrs, &dbg);
|
|
|
783 exception = env->ExceptionOccurred();
|
|
|
784 if (exception) {
|
|
|
785 env->ExceptionClear();
|
|
|
786 if (!sa_ignore_threaddb) {
|
|
|
787 detach_internal(env, this_obj);
|
|
|
788 env->Throw(exception);
|
|
|
789 }
|
|
|
790 return;
|
|
|
791 }
|
|
|
792
|
|
|
793 // init libthread_db and create thread_db agent
|
|
|
794 p_td_init_t p_td_init = (p_td_init_t) env->GetLongField(this_obj, p_td_init_ID);
|
|
|
795 if (p_td_init == 0) {
|
|
|
796 if (!sa_ignore_threaddb) {
|
|
|
797 detach_internal(env, this_obj);
|
|
|
798 }
|
|
|
799 HANDLE_THREADDB_FAILURE("Did not find libthread in target process/core!");
|
|
|
800 }
|
|
|
801
|
|
|
802 if (p_td_init() != TD_OK) {
|
|
|
803 if (!sa_ignore_threaddb) {
|
|
|
804 detach_internal(env, this_obj);
|
|
|
805 }
|
|
|
806 HANDLE_THREADDB_FAILURE("Can't initialize thread_db!");
|
|
|
807 }
|
|
|
808
|
|
|
809 p_td_ta_new_t p_td_ta_new = (p_td_ta_new_t) env->GetLongField(this_obj, p_td_ta_new_ID);
|
|
|
810
|
|
|
811 td_thragent_t *p_td_thragent_t = 0;
|
|
|
812 if (p_td_ta_new(ph, &p_td_thragent_t) != TD_OK) {
|
|
|
813 if (!sa_ignore_threaddb) {
|
|
|
814 detach_internal(env, this_obj);
|
|
|
815 }
|
|
|
816 HANDLE_THREADDB_FAILURE("Can't create thread_db agent!");
|
|
|
817 }
|
|
|
818 env->SetLongField(this_obj, p_td_thragent_t_ID, (jlong)(uintptr_t) p_td_thragent_t);
|
|
|
819
|
|
|
820 }
|
|
|
821
|
|
|
822 /*
|
|
|
823 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
824 * Method: attach0
|
|
|
825 * Signature: (Ljava/lang/String;)V
|
|
|
826 * Description: process detach
|
|
|
827 */
|
|
|
828 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2
|
|
|
829 (JNIEnv *env, jobject this_obj, jstring pid) {
|
|
|
830 attach_internal(env, this_obj, pid, JNI_TRUE);
|
|
|
831 }
|
|
|
832
|
|
|
833 /*
|
|
|
834 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
835 * Method: attach0
|
|
|
836 * Signature: (Ljava/lang/String;Ljava/lang/String;)V
|
|
|
837 * Description: core file detach
|
|
|
838 */
|
|
|
839 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_attach0__Ljava_lang_String_2Ljava_lang_String_2
|
|
|
840 (JNIEnv *env, jobject this_obj, jstring executable, jstring corefile) {
|
|
|
841 // ignore executable file name, libproc.so can detect a.out name anyway.
|
|
|
842 attach_internal(env, this_obj, corefile, JNI_FALSE);
|
|
|
843 }
|
|
|
844
|
|
|
845
|
|
|
846 /*
|
|
|
847 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
848 * Method: detach0
|
|
|
849 * Signature: ()V
|
|
|
850 * Description: process/core file detach
|
|
|
851 */
|
|
|
852 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_detach0
|
|
|
853 (JNIEnv *env, jobject this_obj) {
|
|
|
854 detach_internal(env, this_obj);
|
|
|
855 }
|
|
|
856
|
|
|
857 /*
|
|
|
858 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
859 * Method: getRemoteProcessAddressSize0
|
|
|
860 * Signature: ()I
|
|
|
861 * Description: get process/core address size
|
|
|
862 */
|
|
|
863 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getRemoteProcessAddressSize0
|
|
|
864 (JNIEnv *env, jobject this_obj) {
|
|
|
865 jlong p_ps_prochandle;
|
|
|
866 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
867 int data_model = PR_MODEL_ILP32;
|
|
|
868 ps_pdmodel((struct ps_prochandle*) p_ps_prochandle, &data_model);
|
|
|
869 print_debug("debuggee is %d bit\n", data_model == PR_MODEL_ILP32? 32 : 64);
|
|
|
870 return (jint) data_model == PR_MODEL_ILP32? 32 : 64;
|
|
|
871 }
|
|
|
872
|
|
|
873 /*
|
|
|
874 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
875 * Method: getPageSize0
|
|
|
876 * Signature: ()I
|
|
|
877 * Description: get process/core page size
|
|
|
878 */
|
|
|
879 JNIEXPORT jint JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getPageSize0
|
|
|
880 (JNIEnv *env, jobject this_obj) {
|
|
|
881
|
|
|
882 /*
|
|
|
883 We are not yet attached to a java process or core file. getPageSize is called from
|
|
|
884 the constructor of ProcDebuggerLocal. The following won't work!
|
|
|
885
|
|
|
886 jlong p_ps_prochandle;
|
|
|
887 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
888 CHECK_EXCEPTION_(-1);
|
|
|
889 struct ps_prochandle* prochandle = (struct ps_prochandle*) p_ps_prochandle;
|
|
|
890 return (Pstate(prochandle) == PS_DEAD) ? Pgetauxval(prochandle, AT_PAGESZ)
|
|
|
891 : getpagesize();
|
|
|
892
|
|
|
893 So even though core may have been generated with a different page size settings, for now
|
|
|
894 call getpagesize.
|
|
|
895 */
|
|
|
896
|
|
|
897 return getpagesize();
|
|
|
898 }
|
|
|
899
|
|
|
900 /*
|
|
|
901 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
902 * Method: getThreadIntegerRegisterSet0
|
|
|
903 * Signature: (J)[J
|
|
|
904 * Description: get gregset for a given thread specified by thread id
|
|
|
905 */
|
|
|
906 JNIEXPORT jlongArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_getThreadIntegerRegisterSet0
|
|
|
907 (JNIEnv *env, jobject this_obj, jlong tid) {
|
|
|
908 // map the thread id to thread handle
|
|
|
909 p_td_ta_map_id2thr_t p_td_ta_map_id2thr = (p_td_ta_map_id2thr_t) env->GetLongField(this_obj, p_td_ta_map_id2thr_ID);
|
|
|
910
|
|
|
911 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
|
|
|
912 if (p_td_thragent_t == 0) {
|
|
|
913 return 0;
|
|
|
914 }
|
|
|
915
|
|
|
916 td_thrhandle_t thr_handle;
|
|
|
917 if (p_td_ta_map_id2thr(p_td_thragent_t, (thread_t) tid, &thr_handle) != TD_OK) {
|
|
|
918 THROW_NEW_DEBUGGER_EXCEPTION_("can't map thread id to thread handle!", 0);
|
|
|
919 }
|
|
|
920
|
|
|
921 p_td_thr_getgregs_t p_td_thr_getgregs = (p_td_thr_getgregs_t) env->GetLongField(this_obj, p_td_thr_getgregs_ID);
|
|
|
922 prgregset_t gregs;
|
|
|
923 p_td_thr_getgregs(&thr_handle, gregs);
|
|
|
924
|
|
|
925 jlongArray res = env->NewLongArray(NPRGREG);
|
|
|
926 CHECK_EXCEPTION_(0);
|
|
|
927 jboolean isCopy;
|
|
|
928 jlong* ptr = env->GetLongArrayElements(res, &isCopy);
|
|
|
929 for (int i = 0; i < NPRGREG; i++) {
|
|
|
930 ptr[i] = (jlong) (uintptr_t) gregs[i];
|
|
|
931 }
|
|
|
932 env->ReleaseLongArrayElements(res, ptr, JNI_COMMIT);
|
|
|
933 return res;
|
|
|
934 }
|
|
|
935
|
|
|
936 /*
|
|
|
937 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
938 * Method: fillThreadList0
|
|
|
939 * Signature: (Ljava/util/List;)V
|
|
|
940 * Description: fills thread list of the debuggee process/core
|
|
|
941 */
|
|
|
942 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillThreadList0
|
|
|
943 (JNIEnv *env, jobject this_obj, jobject list) {
|
|
|
944
|
|
|
945 td_thragent_t* p_td_thragent_t = (td_thragent_t*) env->GetLongField(this_obj, p_td_thragent_t_ID);
|
|
|
946 if (p_td_thragent_t == 0) {
|
|
|
947 return;
|
|
|
948 }
|
|
|
949
|
|
|
950 p_td_ta_thr_iter_t p_td_ta_thr_iter = (p_td_ta_thr_iter_t) env->GetLongField(this_obj, p_td_ta_thr_iter_ID);
|
|
|
951
|
|
|
952 DebuggerWithObject dbgo;
|
|
|
953 dbgo.env = env;
|
|
|
954 dbgo.this_obj = this_obj;
|
|
|
955 dbgo.obj = list;
|
|
|
956
|
|
|
957 p_td_ta_thr_iter(p_td_thragent_t, fill_thread_list, &dbgo,
|
|
|
958 TD_THR_ANY_STATE, TD_THR_LOWEST_PRIORITY, TD_SIGNO_MASK, TD_THR_ANY_USER_FLAGS);
|
|
|
959 }
|
|
|
960
|
|
|
961 /*
|
|
|
962 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
963 * Method: fillCFrameList0
|
|
|
964 * Signature: ([J)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;
|
|
|
965 * Description: fills CFrame list for a given thread
|
|
|
966 */
|
|
|
967 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillCFrameList0
|
|
|
968 (JNIEnv *env, jobject this_obj, jlongArray regsArray) {
|
|
|
969 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
970
|
|
|
971 DebuggerWith2Objects dbgo2;
|
|
|
972 dbgo2.env = env;
|
|
|
973 dbgo2.this_obj = this_obj;
|
|
|
974 dbgo2.obj = NULL;
|
|
|
975 dbgo2.obj2 = NULL;
|
|
|
976
|
|
|
977 jboolean isCopy;
|
|
|
978 jlong* ptr = env->GetLongArrayElements(regsArray, &isCopy);
|
|
|
979 CHECK_EXCEPTION_(0);
|
|
|
980
|
|
|
981 prgregset_t gregs;
|
|
|
982 for (int i = 0; i < NPRGREG; i++) {
|
|
|
983 gregs[i] = (uintptr_t) ptr[i];
|
|
|
984 }
|
|
|
985
|
|
|
986 env->ReleaseLongArrayElements(regsArray, ptr, JNI_ABORT);
|
|
|
987 CHECK_EXCEPTION_(0);
|
|
|
988 Pstack_iter((struct ps_prochandle*) p_ps_prochandle, gregs, fill_cframe_list, &dbgo2);
|
|
|
989 return dbgo2.obj;
|
|
|
990 }
|
|
|
991
|
|
|
992 /*
|
|
|
993 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
994 * Method: fillLoadObjectList0
|
|
|
995 * Signature: (Ljava/util/List;)V
|
|
|
996 * Description: fills shared objects of the debuggee process/core
|
|
|
997 */
|
|
|
998 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_fillLoadObjectList0
|
|
|
999 (JNIEnv *env, jobject this_obj, jobject list) {
|
|
|
1000 DebuggerWithObject dbgo;
|
|
|
1001 dbgo.env = env;
|
|
|
1002 dbgo.this_obj = this_obj;
|
|
|
1003 dbgo.obj = list;
|
|
|
1004
|
|
|
1005 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1006 Pobject_iter((struct ps_prochandle*) p_ps_prochandle, fill_load_object_list, &dbgo);
|
|
|
1007 }
|
|
|
1008
|
|
|
1009 /*
|
|
|
1010 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1011 * Method: readBytesFromProcess0
|
|
|
1012 * Signature: (JJ)[B
|
|
|
1013 * Description: read bytes from debuggee process/core
|
|
|
1014 */
|
|
|
1015 JNIEXPORT jbyteArray JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_readBytesFromProcess0
|
|
|
1016 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes) {
|
|
|
1017
|
|
|
1018 jbyteArray array = env->NewByteArray(numBytes);
|
|
|
1019 CHECK_EXCEPTION_(0);
|
|
|
1020 jboolean isCopy;
|
|
|
1021 jbyte* bufPtr = env->GetByteArrayElements(array, &isCopy);
|
|
|
1022 CHECK_EXCEPTION_(0);
|
|
|
1023
|
|
|
1024 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1025 ps_err_e ret = ps_pread((struct ps_prochandle*) p_ps_prochandle,
|
|
|
1026 (psaddr_t)address, bufPtr, (size_t)numBytes);
|
|
|
1027
|
|
|
1028 if (ret != PS_OK) {
|
|
|
1029 // part of the class sharing workaround. try shared heap area
|
|
|
1030 int classes_jsa_fd = env->GetIntField(this_obj, classes_jsa_fd_ID);
|
|
|
1031 if (classes_jsa_fd != -1 && address != (jlong)0) {
|
|
|
1032 print_debug("read failed at 0x%lx, attempting shared heap area\n", (long) address);
|
|
|
1033
|
|
|
1034 struct FileMapHeader* pheader = (struct FileMapHeader*) env->GetLongField(this_obj, p_file_map_header_ID);
|
|
|
1035 // walk through the shared mappings -- we just have 4 of them.
|
|
|
1036 // so, linear walking is okay.
|
|
|
1037 for (int m = 0; m < NUM_SHARED_MAPS; m++) {
|
|
|
1038
|
|
|
1039 // We can skip the non-read-only maps. These are mapped as MAP_PRIVATE
|
|
|
1040 // and hence will be read by libproc. Besides, the file copy may be
|
|
|
1041 // stale because the process might have modified those pages.
|
|
|
1042 if (pheader->_space[m]._read_only) {
|
|
|
1043 jlong baseAddress = (jlong) (uintptr_t) pheader->_space[m]._base;
|
|
|
1044 size_t usedSize = pheader->_space[m]._used;
|
|
|
1045 if (address >= baseAddress && address < (baseAddress + usedSize)) {
|
|
|
1046 // the given address falls in this shared heap area
|
|
|
1047 print_debug("found shared map at 0x%lx\n", (long) baseAddress);
|
|
|
1048
|
|
|
1049
|
|
|
1050 // If more data is asked than actually mapped from file, we need to zero fill
|
|
|
1051 // till the end-of-page boundary. But, java array new does that for us. we just
|
|
|
1052 // need to read as much as data available.
|
|
|
1053
|
|
|
1054 #define MIN2(x, y) (((x) < (y))? (x) : (y))
|
|
|
1055
|
|
|
1056 jlong diff = address - baseAddress;
|
|
|
1057 jlong bytesToRead = MIN2(numBytes, usedSize - diff);
|
|
|
1058 off_t offset = pheader->_space[m]._file_offset + off_t(diff);
|
|
|
1059 ssize_t bytesRead = pread(classes_jsa_fd, bufPtr, bytesToRead, offset);
|
|
|
1060 if (bytesRead != bytesToRead) {
|
|
|
1061 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
|
|
|
1062 print_debug("shared map read failed\n");
|
|
|
1063 return jbyteArray(0);
|
|
|
1064 } else {
|
|
|
1065 print_debug("shared map read succeeded\n");
|
|
|
1066 env->ReleaseByteArrayElements(array, bufPtr, 0);
|
|
|
1067 return array;
|
|
|
1068 }
|
|
|
1069 } // is in current map
|
|
|
1070 } // is read only map
|
|
|
1071 } // for shared maps
|
|
|
1072 } // classes_jsa_fd != -1
|
|
|
1073 env->ReleaseByteArrayElements(array, bufPtr, JNI_ABORT);
|
|
|
1074 return jbyteArray(0);
|
|
|
1075 } else {
|
|
|
1076 env->ReleaseByteArrayElements(array, bufPtr, 0);
|
|
|
1077 return array;
|
|
|
1078 }
|
|
|
1079 }
|
|
|
1080
|
|
|
1081 /*
|
|
|
1082 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1083 * Method: writeBytesToProcess0
|
|
|
1084 * Signature: (JJ[B)V
|
|
|
1085 * Description: write bytes into debugger process
|
|
|
1086 */
|
|
|
1087 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_writeBytesToProcess0
|
|
|
1088 (JNIEnv *env, jobject this_obj, jlong address, jlong numBytes, jbyteArray data) {
|
|
|
1089 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1090 jboolean isCopy;
|
|
|
1091 jbyte* ptr = env->GetByteArrayElements(data, &isCopy);
|
|
|
1092 CHECK_EXCEPTION;
|
|
|
1093
|
|
|
1094 if (ps_pwrite((struct ps_prochandle*) p_ps_prochandle, address, ptr, numBytes) != PS_OK) {
|
|
|
1095 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
|
|
|
1096 THROW_NEW_DEBUGGER_EXCEPTION("Process write failed!");
|
|
|
1097 }
|
|
|
1098
|
|
|
1099 env->ReleaseByteArrayElements(data, ptr, JNI_ABORT);
|
|
|
1100 }
|
|
|
1101
|
|
|
1102 /*
|
|
|
1103 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1104 * Method: suspend0
|
|
|
1105 * Signature: ()V
|
|
|
1106 */
|
|
|
1107 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_suspend0
|
|
|
1108 (JNIEnv *env, jobject this_obj) {
|
|
|
1109 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1110 // for now don't check return value. revisit this again.
|
|
|
1111 Pstop((struct ps_prochandle*) p_ps_prochandle, 1000);
|
|
|
1112 }
|
|
|
1113
|
|
|
1114 /*
|
|
|
1115 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1116 * Method: resume0
|
|
|
1117 * Signature: ()V
|
|
|
1118 */
|
|
|
1119 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_resume0
|
|
|
1120 (JNIEnv *env, jobject this_obj) {
|
|
|
1121 jlong p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1122 // for now don't check return value. revisit this again.
|
|
|
1123 Psetrun((struct ps_prochandle*) p_ps_prochandle, 0, PRCFAULT|PRSTOP);
|
|
|
1124 }
|
|
|
1125
|
|
|
1126 /*
|
|
|
1127 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1128 * Method: lookupByName0
|
|
|
1129 * Signature: (Ljava/lang/String;Ljava/lang/String;)J
|
|
|
1130 * Description: symbol lookup by name
|
|
|
1131 */
|
|
|
1132 JNIEXPORT jlong JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByName0
|
|
|
1133 (JNIEnv *env, jobject this_obj, jstring objectName, jstring symbolName) {
|
|
|
1134 jlong p_ps_prochandle;
|
|
|
1135 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1136
|
|
|
1137 jboolean isCopy;
|
|
|
1138 const char* objectName_cstr = NULL;
|
|
|
1139 if (objectName != NULL) {
|
|
|
1140 objectName_cstr = env->GetStringUTFChars(objectName, &isCopy);
|
|
|
1141 CHECK_EXCEPTION_(0);
|
|
|
1142 } else {
|
|
|
1143 objectName_cstr = PR_OBJ_EVERY;
|
|
|
1144 }
|
|
|
1145
|
|
|
1146 const char* symbolName_cstr = env->GetStringUTFChars(symbolName, &isCopy);
|
|
|
1147 CHECK_EXCEPTION_(0);
|
|
|
1148
|
|
|
1149 psaddr_t symbol_addr = (psaddr_t) 0;
|
|
|
1150 ps_pglobal_lookup((struct ps_prochandle*) p_ps_prochandle, objectName_cstr,
|
|
|
1151 symbolName_cstr, &symbol_addr);
|
|
|
1152
|
|
|
1153 if (symbol_addr == 0) {
|
|
|
1154 print_debug("lookup for %s in %s failed\n", symbolName_cstr, objectName_cstr);
|
|
|
1155 }
|
|
|
1156
|
|
|
1157 if (objectName_cstr != PR_OBJ_EVERY) {
|
|
|
1158 env->ReleaseStringUTFChars(objectName, objectName_cstr);
|
|
|
1159 }
|
|
|
1160 env->ReleaseStringUTFChars(symbolName, symbolName_cstr);
|
|
|
1161 return (jlong) (uintptr_t) symbol_addr;
|
|
|
1162 }
|
|
|
1163
|
|
|
1164 /*
|
|
|
1165 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1166 * Method: lookupByAddress0
|
|
|
1167 * Signature: (J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;
|
|
|
1168 * Description: lookup symbol name for a given address
|
|
|
1169 */
|
|
|
1170 JNIEXPORT jobject JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_lookupByAddress0
|
|
|
1171 (JNIEnv *env, jobject this_obj, jlong address) {
|
|
|
1172 jlong p_ps_prochandle;
|
|
|
1173 p_ps_prochandle = env->GetLongField(this_obj, p_ps_prochandle_ID);
|
|
|
1174
|
|
|
1175 char nameBuf[SYMBOL_BUF_SIZE + 1];
|
|
|
1176 GElf_Sym sym;
|
|
|
1177 int res = Plookup_by_addr((struct ps_prochandle*) p_ps_prochandle, (uintptr_t) address,
|
|
|
1178 nameBuf, sizeof(nameBuf), &sym);
|
|
|
1179 if (res != 0) { // failed
|
|
|
1180 return 0;
|
|
|
1181 }
|
|
|
1182
|
|
|
1183 jstring resSym = env->NewStringUTF(nameBuf);
|
|
|
1184 CHECK_EXCEPTION_(0);
|
|
|
1185
|
|
|
1186 return env->CallObjectMethod(this_obj, createClosestSymbol_ID, resSym, (address - sym.st_value));
|
|
|
1187 }
|
|
|
1188
|
|
|
1189 /*
|
|
|
1190 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1191 * Method: demangle0
|
|
|
1192 * Signature: (Ljava/lang/String;)Ljava/lang/String;
|
|
|
1193 */
|
|
|
1194 JNIEXPORT jstring JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_demangle0
|
|
|
1195 (JNIEnv *env, jobject this_object, jstring name) {
|
|
|
1196 jboolean isCopy;
|
|
|
1197 const char* ptr = env->GetStringUTFChars(name, &isCopy);
|
|
|
1198 char buf[2*SYMBOL_BUF_SIZE + 1];
|
|
|
1199 jstring res = 0;
|
|
|
1200 if (cplus_demangle((char*) ptr, buf, sizeof(buf)) != DEMANGLE_ESPACE) {
|
|
|
1201 res = env->NewStringUTF(buf);
|
|
|
1202 } else {
|
|
|
1203 res = name;
|
|
|
1204 }
|
|
|
1205 env->ReleaseStringUTFChars(name, ptr);
|
|
|
1206 return res;
|
|
|
1207 }
|
|
|
1208
|
|
|
1209 typedef int (*find_file_hook_t)(const char *, int elf_checksum);
|
|
|
1210
|
|
|
1211 /*
|
|
|
1212 * Class: sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal
|
|
|
1213 * Method: initIDs
|
|
|
1214 * Signature: ()V
|
|
|
1215 * Description: get JNI ids for fields and methods of ProcDebuggerLocal class
|
|
|
1216 */
|
|
|
1217 JNIEXPORT void JNICALL Java_sun_jvm_hotspot_debugger_proc_ProcDebuggerLocal_initIDs
|
|
|
1218 (JNIEnv *env, jclass clazz) {
|
|
|
1219 _libsaproc_debug = getenv("LIBSAPROC_DEBUG") != NULL;
|
|
|
1220 if (_libsaproc_debug) {
|
|
|
1221 // propagate debug mode to libproc.so
|
|
|
1222 static const char* var = "LIBPROC_DEBUG=1";
|
|
|
1223 putenv((char*)var);
|
|
|
1224 }
|
|
|
1225
|
|
|
1226 void* libproc_handle = dlopen("libproc.so", RTLD_LAZY | RTLD_GLOBAL);
|
|
|
1227 if (libproc_handle == 0)
|
|
|
1228 THROW_NEW_DEBUGGER_EXCEPTION("can't load libproc.so, if you are using Solaris 5.7 or below, copy libproc.so from 5.8!");
|
|
|
1229
|
|
|
1230 // If possible, set shared object find file hook.
|
|
|
1231 void (*set_hook)(find_file_hook_t) = (void(*)(find_file_hook_t))dlsym(libproc_handle, "Pset_find_file_hook");
|
|
|
1232 if (set_hook) {
|
|
|
1233 // we found find file hook symbol, set up our hook function.
|
|
|
1234 set_hook(find_file_hook);
|
|
|
1235 } else if (getenv(SA_ALTROOT)) {
|
|
|
1236 printf("libsaproc WARNING: %s set, but can't set file hook. " \
|
|
|
1237 "Did you use right version of libproc.so?\n", SA_ALTROOT);
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 p_ps_prochandle_ID = env->GetFieldID(clazz, "p_ps_prochandle", "J");
|
|
|
1241 CHECK_EXCEPTION;
|
|
|
1242
|
|
|
1243 libthread_db_handle_ID = env->GetFieldID(clazz, "libthread_db_handle", "J");
|
|
|
1244 CHECK_EXCEPTION;
|
|
|
1245
|
|
|
1246 p_td_thragent_t_ID = env->GetFieldID(clazz, "p_td_thragent_t", "J");
|
|
|
1247 CHECK_EXCEPTION;
|
|
|
1248
|
|
|
1249 p_td_init_ID = env->GetFieldID(clazz, "p_td_init", "J");
|
|
|
1250 CHECK_EXCEPTION;
|
|
|
1251
|
|
|
1252 p_td_ta_new_ID = env->GetFieldID(clazz, "p_td_ta_new", "J");
|
|
|
1253 CHECK_EXCEPTION;
|
|
|
1254
|
|
|
1255 p_td_ta_delete_ID = env->GetFieldID(clazz, "p_td_ta_delete", "J");
|
|
|
1256 CHECK_EXCEPTION;
|
|
|
1257
|
|
|
1258 p_td_ta_thr_iter_ID = env->GetFieldID(clazz, "p_td_ta_thr_iter", "J");
|
|
|
1259 CHECK_EXCEPTION;
|
|
|
1260
|
|
|
1261 p_td_thr_get_info_ID = env->GetFieldID(clazz, "p_td_thr_get_info", "J");
|
|
|
1262 CHECK_EXCEPTION;
|
|
|
1263
|
|
|
1264 p_td_ta_map_id2thr_ID = env->GetFieldID(clazz, "p_td_ta_map_id2thr", "J");
|
|
|
1265 CHECK_EXCEPTION;
|
|
|
1266
|
|
|
1267 p_td_thr_getgregs_ID = env->GetFieldID(clazz, "p_td_thr_getgregs", "J");
|
|
|
1268 CHECK_EXCEPTION;
|
|
|
1269
|
|
|
1270 getThreadForThreadId_ID = env->GetMethodID(clazz,
|
|
|
1271 "getThreadForThreadId", "(J)Lsun/jvm/hotspot/debugger/ThreadProxy;");
|
|
|
1272 CHECK_EXCEPTION;
|
|
|
1273
|
|
|
1274 pcRegIndex_ID = env->GetFieldID(clazz, "pcRegIndex", "I");
|
|
|
1275 CHECK_EXCEPTION;
|
|
|
1276
|
|
|
1277 fpRegIndex_ID = env->GetFieldID(clazz, "fpRegIndex", "I");
|
|
|
1278 CHECK_EXCEPTION;
|
|
|
1279
|
|
|
1280 createSenderFrame_ID = env->GetMethodID(clazz,
|
|
|
1281 "createSenderFrame", "(Lsun/jvm/hotspot/debugger/proc/ProcCFrame;JJ)Lsun/jvm/hotspot/debugger/proc/ProcCFrame;");
|
|
|
1282 CHECK_EXCEPTION;
|
|
|
1283
|
|
|
1284 createLoadObject_ID = env->GetMethodID(clazz,
|
|
|
1285 "createLoadObject", "(Ljava/lang/String;JJ)Lsun/jvm/hotspot/debugger/cdbg/LoadObject;");
|
|
|
1286 CHECK_EXCEPTION;
|
|
|
1287
|
|
|
1288 createClosestSymbol_ID = env->GetMethodID(clazz,
|
|
|
1289 "createClosestSymbol", "(Ljava/lang/String;J)Lsun/jvm/hotspot/debugger/cdbg/ClosestSymbol;");
|
|
|
1290 CHECK_EXCEPTION;
|
|
|
1291
|
|
|
1292 listAdd_ID = env->GetMethodID(env->FindClass("java/util/List"), "add", "(Ljava/lang/Object;)Z");
|
|
|
1293 CHECK_EXCEPTION;
|
|
|
1294
|
|
|
1295 // part of the class sharing workaround
|
|
|
1296 classes_jsa_fd_ID = env->GetFieldID(clazz, "classes_jsa_fd", "I");
|
|
|
1297 CHECK_EXCEPTION;
|
|
|
1298 p_file_map_header_ID = env->GetFieldID(clazz, "p_file_map_header", "J");
|
|
|
1299 CHECK_EXCEPTION;
|
|
|
1300 }
|
