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; --- 81 unchanged lines hidden (view full) --- 90 p.readBlob(addr, (uint8_t *)&sp, sizeof(Addr)); 91 92 return sp & ~ULL(0x3fff); 93 } 94 95 inline Addr 96 curTaskInfo(Addr thread_info = 0) 97 { |
98 // Note that in Linux 4.10 the thread_info struct will no longer have a 99 // pointer to the task_struct for arm64. See: 100 // https://patchwork.kernel.org/patch/9333699/ |
101 int32_t offset; 102 if (!get_data("thread_info_task", offset)) 103 return 0; 104 105 if (!thread_info) 106 thread_info = curThreadInfo(); 107 108 Addr addr; 109 CopyOut(tc, &addr, thread_info + offset, sizeof(addr)); 110 111 return addr; 112 } 113 114 int32_t |
115 curTaskPIDFromTaskStruct(Addr task_struct) { |
116 int32_t offset; 117 if (!get_data("task_struct_pid", offset)) 118 return -1; 119 120 int32_t pid; |
121 CopyOut(tc, &pid, task_struct + offset, sizeof(pid)); |
122 123 return pid; 124 } 125 126 int32_t |
127 curTaskPID(Addr thread_info = 0) |
128 { |
129 return curTaskPIDFromTaskStruct(curTaskInfo(thread_info)); 130 } 131 132 int32_t 133 curTaskTGIDFromTaskStruct(Addr task_struct) 134 { |
135 int32_t offset; 136 if (!get_data("task_struct_tgid", offset)) 137 return -1; 138 139 int32_t tgid; |
140 CopyOut(tc, &tgid, task_struct + offset, sizeof(tgid)); |
141 142 return tgid; 143 } 144 |
145 int32_t 146 curTaskTGID(Addr thread_info = 0) 147 { 148 return curTaskTGIDFromTaskStruct(curTaskInfo(thread_info)); 149 } 150 |
151 int64_t |
152 curTaskStartFromTaskStruct(Addr task_struct) |
153 { 154 int32_t offset; 155 if (!get_data("task_struct_start_time", offset)) 156 return -1; 157 158 int64_t data; 159 // start_time is actually of type timespec, but if we just 160 // grab the first long, we'll get the seconds out of it |
161 CopyOut(tc, &data, task_struct + offset, sizeof(data)); |
162 163 return data; 164 } 165 |
166 int64_t 167 curTaskStart(Addr thread_info = 0) 168 { 169 return curTaskStartFromTaskStruct(curTaskInfo(thread_info)); 170 } 171 |
172 std::string |
173 curTaskNameFromTaskStruct(Addr task_struct) |
174 { 175 int32_t offset; 176 int32_t size; 177 178 if (!get_data("task_struct_comm", offset)) 179 return "FailureIn_curTaskName"; 180 181 if (!get_data("task_struct_comm_size", size)) 182 return "FailureIn_curTaskName"; 183 184 char buffer[size + 1]; |
185 CopyStringOut(tc, buffer, task_struct + offset, size); |
186 187 return buffer; 188 } 189 |
190 std::string 191 curTaskName(Addr thread_info = 0) 192 { 193 return curTaskNameFromTaskStruct(curTaskInfo(thread_info)); 194 } 195 |
196 int32_t |
197 curTaskMmFromTaskStruct(Addr task_struct) |
198 { 199 int32_t offset; 200 if (!get_data("task_struct_mm", offset)) 201 return -1; 202 203 int32_t mm_ptr; |
204 CopyOut(tc, &mm_ptr, task_struct + offset, sizeof(mm_ptr)); |
205 206 return mm_ptr; 207 } |
208 209 int32_t 210 curTaskMm(Addr thread_info = 0) 211 { 212 return curTaskMmFromTaskStruct(curTaskInfo(thread_info)); 213 } |
214}; 215 216} // namespace Linux 217 218#endif // __ARCH_GENERIC_LINUX_THREADINFO_HH__ |