1/* 2 * Copyright (c) 2004 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; --- 44 unchanged lines hidden (view full) --- 53 Addr addr = 0; 54 if (!sys->kernelSymtab->findAddress(symbol, addr)) { 55 warn_once("Unable to find kernel symbol %s\n", symbol); 56 warn_once("Kernel not compiled with task_struct info; can't get " 57 "currently executing task/process/thread name/ids!\n"); 58 return false; 59 } 60 |
61 data = tc->getVirtProxy().read<T>(addr, TheISA::GuestByteOrder); |
62 |
63 return true; 64 } 65 66 public: 67 ThreadInfo(ThreadContext *_tc, Addr _pcbb = 0) 68 : tc(_tc), sys(tc->getSystemPtr()), pcbb(_pcbb) 69 { 70 --- 20 unchanged lines hidden (view full) --- 91 } 92 93 inline Addr 94 curTaskInfo(Addr thread_info = 0) 95 { 96 // Note that in Linux 4.10 the thread_info struct will no longer have a 97 // pointer to the task_struct for arm64. See: 98 // https://patchwork.kernel.org/patch/9333699/ |
99 int32_t offset = 0; |
100 if (!get_data("thread_info_task", offset)) 101 return 0; 102 103 if (!thread_info) 104 thread_info = curThreadInfo(); 105 |
106 return tc->getVirtProxy().read<Addr>(thread_info + offset); |
107 } 108 109 int32_t 110 curTaskPIDFromTaskStruct(Addr task_struct) { |
111 int32_t offset = 0; |
112 if (!get_data("task_struct_pid", offset)) 113 return -1; 114 |
115 return tc->getVirtProxy().read<int32_t>(task_struct + offset); |
116 } 117 118 int32_t 119 curTaskPID(Addr thread_info = 0) 120 { 121 return curTaskPIDFromTaskStruct(curTaskInfo(thread_info)); 122 } 123 124 int32_t 125 curTaskTGIDFromTaskStruct(Addr task_struct) 126 { |
127 int32_t offset = 0; |
128 if (!get_data("task_struct_tgid", offset)) 129 return -1; 130 |
131 return tc->getVirtProxy().read<int32_t>(task_struct + offset); |
132 } 133 134 int32_t 135 curTaskTGID(Addr thread_info = 0) 136 { 137 return curTaskTGIDFromTaskStruct(curTaskInfo(thread_info)); 138 } 139 140 int64_t 141 curTaskStartFromTaskStruct(Addr task_struct) 142 { |
143 int32_t offset = 0; |
144 if (!get_data("task_struct_start_time", offset)) 145 return -1; 146 |
147 // start_time is actually of type timespec, but if we just 148 // grab the first long, we'll get the seconds out of it |
149 return tc->getVirtProxy().read<int64_t>(task_struct + offset); |
150 } 151 152 int64_t 153 curTaskStart(Addr thread_info = 0) 154 { 155 return curTaskStartFromTaskStruct(curTaskInfo(thread_info)); 156 } 157 158 std::string 159 curTaskNameFromTaskStruct(Addr task_struct) 160 { |
161 int32_t offset = 0; 162 int32_t size = 0; |
163 164 if (!get_data("task_struct_comm", offset)) 165 return "FailureIn_curTaskName"; 166 167 if (!get_data("task_struct_comm_size", size)) 168 return "FailureIn_curTaskName"; 169 170 char buffer[size + 1]; |
171 tc->getVirtProxy().readString(buffer, task_struct + offset, size); |
172 173 return buffer; 174 } 175 176 std::string 177 curTaskName(Addr thread_info = 0) 178 { 179 return curTaskNameFromTaskStruct(curTaskInfo(thread_info)); 180 } 181 182 int32_t 183 curTaskMmFromTaskStruct(Addr task_struct) 184 { 185 int32_t offset; 186 if (!get_data("task_struct_mm", offset)) 187 return -1; 188 |
189 return tc->getVirtProxy().read<int32_t>(task_struct + offset); |
190 } 191 192 int32_t 193 curTaskMm(Addr thread_info = 0) 194 { 195 return curTaskMmFromTaskStruct(curTaskInfo(thread_info)); 196 } 197}; 198 199} // namespace Linux 200 201#endif // __ARCH_GENERIC_LINUX_THREADINFO_HH__ |