1  /* Thread-local storage handling in the ELF dynamic linker.  M68K version.
       2     Copyright (C) 2010-2023 Free Software Foundation, Inc.
       3     This file is part of the GNU C Library.
       4  
       5     The GNU C Library is free software; you can redistribute it and/or
       6     modify it under the terms of the GNU Lesser General Public
       7     License as published by the Free Software Foundation; either
       8     version 2.1 of the License, or (at your option) any later version.
       9  
      10     The GNU C Library is distributed in the hope that it will be useful,
      11     but WITHOUT ANY WARRANTY; without even the implied warranty of
      12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      13     Lesser General Public License for more details.
      14  
      15     You should have received a copy of the GNU Lesser General Public
      16     License along with the GNU C Library.  If not, see
      17     <https://www.gnu.org/licenses/>.  */
      18  
      19  
      20  /* Type used for the representation of TLS information in the GOT.  */
      21  typedef struct
      22  {
      23    unsigned long int ti_module;
      24    unsigned long int ti_offset;
      25  } tls_index;
      26  
      27  /* The thread pointer points 0x7000 past the first static TLS block.  */
      28  #define TLS_TP_OFFSET		0x7000
      29  
      30  /* Dynamic thread vector pointers point 0x8000 past the start of each
      31     TLS block.  */
      32  #define TLS_DTV_OFFSET		0x8000
      33  
      34  /* Compute the value for a TPREL reloc.  */
      35  #define TLS_TPREL_VALUE(sym_map, sym, reloc)				\
      36    ((sym_map)->l_tls_offset + (sym)->st_value + (reloc)->r_addend	\
      37     - TLS_TP_OFFSET)
      38  
      39  /* Compute the value for a DTPREL reloc.  */
      40  #define TLS_DTPREL_VALUE(sym, reloc)				\
      41    ((sym)->st_value + (reloc)->r_addend - TLS_DTV_OFFSET)
      42  
      43  extern void *__tls_get_addr (tls_index *ti);
      44  
      45  #define GET_ADDR_OFFSET		(ti->ti_offset + TLS_DTV_OFFSET)
      46  #define __TLS_GET_ADDR(__ti)	(__tls_get_addr (__ti) - TLS_DTV_OFFSET)