diff options
Diffstat (limited to 'libpthread/nptl/sysdeps/i386/dl-tls.h')
-rw-r--r-- | libpthread/nptl/sysdeps/i386/dl-tls.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/libpthread/nptl/sysdeps/i386/dl-tls.h b/libpthread/nptl/sysdeps/i386/dl-tls.h new file mode 100644 index 000000000..a1707197c --- /dev/null +++ b/libpthread/nptl/sysdeps/i386/dl-tls.h @@ -0,0 +1,60 @@ +/* Thread-local storage handling in the ELF dynamic linker. i386 version. + Copyright (C) 2002, 2004 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. */ + + +/* Type used for the representation of TLS information in the GOT. */ +typedef struct +{ + unsigned long int ti_module; + unsigned long int ti_offset; +} tls_index; + + +#ifdef SHARED +/* This is the prototype for the GNU version. */ +extern void *___tls_get_addr (tls_index *ti) + __attribute__ ((__regparm__ (1))); +extern void *___tls_get_addr_internal (tls_index *ti) + __attribute__ ((__regparm__ (1))) attribute_hidden; + +# ifdef IS_IN_rtld +/* The special thing about the x86 TLS ABI is that we have two + variants of the __tls_get_addr function with different calling + conventions. The GNU version, which we are mostly concerned here, + takes the parameter in a register. The name is changed by adding + an additional underscore at the beginning. The Sun version uses + the normal calling convention. */ +void * +__tls_get_addr (tls_index *ti) +{ + return ___tls_get_addr_internal (ti); +} + + +/* Prepare using the definition of __tls_get_addr in the generic + version of this file. */ +# define __tls_get_addr __attribute__ ((__regparm__ (1))) ___tls_get_addr +strong_alias (___tls_get_addr, ___tls_get_addr_internal) +#else + +/* Users should get the better interface. */ +# define __tls_get_addr ___tls_get_addr + +# endif +#endif |