diff options
Diffstat (limited to 'sysdeps/x86_64/dl-tlsdesc.h')
-rw-r--r-- | sysdeps/x86_64/dl-tlsdesc.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/sysdeps/x86_64/dl-tlsdesc.h b/sysdeps/x86_64/dl-tlsdesc.h new file mode 100644 index 0000000000..9e64aab5a7 --- /dev/null +++ b/sysdeps/x86_64/dl-tlsdesc.h @@ -0,0 +1,64 @@ +/* Thread-local storage descriptor handling in the ELF dynamic linker. + x86_64 version. + Copyright (C) 2005, 2008 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#ifndef _X86_64_DL_TLSDESC_H +# define _X86_64_DL_TLSDESC_H 1 + +/* Use this to access DT_TLSDESC_PLT and DT_TLSDESC_GOT. */ +#ifndef ADDRIDX +# define ADDRIDX(tag) (DT_NUM + DT_THISPROCNUM + DT_VERSIONTAGNUM \ + + DT_EXTRANUM + DT_VALNUM + DT_ADDRTAGIDX (tag)) +#endif + +/* Type used to represent a TLS descriptor in the GOT. */ +struct tlsdesc +{ + ptrdiff_t (*entry)(struct tlsdesc *on_rax); + void *arg; +}; + +typedef struct dl_tls_index +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + +/* Type used as the argument in a TLS descriptor for a symbol that + needs dynamic TLS offsets. */ +struct tlsdesc_dynamic_arg +{ + tls_index tlsinfo; + size_t gen_count; +}; + +extern ptrdiff_t attribute_hidden + _dl_tlsdesc_return(struct tlsdesc *on_rax), + _dl_tlsdesc_undefweak(struct tlsdesc *on_rax), + _dl_tlsdesc_resolve_rela(struct tlsdesc *on_rax), + _dl_tlsdesc_resolve_hold(struct tlsdesc *on_rax); + +# ifdef SHARED +extern void *internal_function _dl_make_tlsdesc_dynamic (struct link_map *map, + size_t ti_offset); + +extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic(struct tlsdesc *); +# endif + +#endif |