| #include <sysdep.h>#include <tls.h>---- Derive offsets relative to the thread register.#define thread_offsetof(mem)    (long)(offsetof(struct pthread, mem) - TLS_TCB_OFFSET - TLS_PRE_TCB_SIZE)MULTIPLE_THREADS_OFFSET         thread_offsetof (header.multiple_threads)TID_OFFSET                      thread_offsetof (tid)
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