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glibc  2.9
dl-tls.h
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00001 /* Thread-local storage handling in the ELF dynamic linker.  PowerPC version.
00002    Copyright (C) 2003 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 
00021 /* Type used for the representation of TLS information in the TOC.  */
00022 typedef struct
00023 {
00024   unsigned long int ti_module;
00025   unsigned long int ti_offset;
00026 } tls_index;
00027 
00028 /* The thread pointer points 0x7000 past the first static TLS block.  */
00029 #define TLS_TP_OFFSET              0x7000
00030 
00031 /* Dynamic thread vector pointers point 0x8000 past the start of each
00032    TLS block.  */
00033 #define TLS_DTV_OFFSET             0x8000
00034 
00035 /* Compute the value for a @tprel reloc.  */
00036 #define TLS_TPREL_VALUE(sym_map, sym, reloc) \
00037   ((sym_map)->l_tls_offset + (sym)->st_value + (reloc)->r_addend \
00038    - TLS_TP_OFFSET)
00039 
00040 /* Compute the value for a @dtprel reloc.  */
00041 #define TLS_DTPREL_VALUE(sym, reloc) \
00042   ((sym)->st_value + (reloc)->r_addend - TLS_DTV_OFFSET)
00043 
00044 #ifdef SHARED
00045 extern void *__tls_get_addr (tls_index *ti);
00046 
00047 # define GET_ADDR_OFFSET    (ti->ti_offset + TLS_DTV_OFFSET)
00048 # define __TLS_GET_ADDR(__ti)      (__tls_get_addr (__ti) - TLS_DTV_OFFSET)
00049 #endif