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Rev 1866 Rev 2061
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extern char _tdata_start;
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extern char _tdata_start;
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extern char _tdata_end;
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extern char _tdata_end;
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extern char _tbss_start;
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extern char _tbss_start;
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extern char _tbss_end;
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extern char _tbss_end;
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/** Create Thread Local storage area, return pointer to TCB(ThreadControlBlock)
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/** Create TLS (Thread Local Storage) data structures.
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 *
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 *
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 * !! The code requires, that sections .tdata and .tbss are adjacent.
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 * The code requires, that sections .tdata and .tbss are adjacent. It may be
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 *    It may be changed in the future.
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 * changed in the future.
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 *
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 * @return Pointer to TCB.
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 */
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 */
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tcb_t * __make_tls(void)
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tcb_t *__make_tls(void)
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{
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{
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    void *data;
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    void *data;
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    tcb_t *tcb;
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    tcb_t *tcb;
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    size_t tls_size = &_tbss_end - &_tdata_start;
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    size_t tls_size = &_tbss_end - &_tdata_start;
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    tcb = __alloc_tls(&data, tls_size);
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    tcb = __alloc_tls(&data, tls_size);
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    /*
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     * Copy thread local data from the initialization image.
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     */
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    memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
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    memcpy(data, &_tdata_start, &_tdata_end - &_tdata_start);
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    /*
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     * Zero out the thread local uninitialized data.
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     */
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    memset(data + (&_tbss_start-&_tdata_start), 0, &_tbss_end-&_tbss_start);
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    memset(data + (&_tbss_start - &_tdata_start), 0, &_tbss_end -
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        &_tbss_start);
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    return tcb;
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    return tcb;
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}
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}
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void __free_tls(tcb_t *tcb)
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void __free_tls(tcb_t *tcb)
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{
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{
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 * to call the thread's implementing function and perform cleanup
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 * to call the thread's implementing function and perform cleanup
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 * and exit when thread returns back. Do not call this function
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 * and exit when thread returns back. Do not call this function
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 * directly.
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 * directly.
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 *
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 *
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 * @param uarg Pointer to userspace argument structure.
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 * @param uarg Pointer to userspace argument structure.
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 *
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 * TODO: Thread stack pages memory leak
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 */
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 */
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void __thread_main(uspace_arg_t *uarg)
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void __thread_main(uspace_arg_t *uarg)
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{
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{
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    psthread_data_t *pt;
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    psthread_data_t *pt;
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