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63 lines
2.2 KiB
C
63 lines
2.2 KiB
C
/* Thread-local storage handling in the ELF dynamic linker. i386 version.
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Copyright (C) 2002, 2004, 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* Type used for the representation of TLS information in the GOT. */
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typedef struct dl_tls_index
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{
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unsigned long int ti_module;
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unsigned long int ti_offset;
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} tls_index;
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#ifdef SHARED
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/* This is the prototype for the GNU version. */
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extern void *___tls_get_addr (tls_index *ti)
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__attribute__ ((__regparm__ (1)));
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extern void *___tls_get_addr_internal (tls_index *ti)
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__attribute__ ((__regparm__ (1))) attribute_hidden;
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# ifdef IS_IN_rtld
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/* The special thing about the x86 TLS ABI is that we have two
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variants of the __tls_get_addr function with different calling
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conventions. The GNU version, which we are mostly concerned here,
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takes the parameter in a register. The name is changed by adding
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an additional underscore at the beginning. The Sun version uses
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the normal calling convention. */
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void *
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__tls_get_addr (tls_index *ti)
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{
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return ___tls_get_addr_internal (ti);
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}
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/* Prepare using the definition of __tls_get_addr in the generic
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version of this file. */
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# define __tls_get_addr __attribute__ ((__regparm__ (1))) ___tls_get_addr
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strong_alias (___tls_get_addr, ___tls_get_addr_internal)
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#else
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/* Users should get the better interface. */
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# define __tls_get_addr ___tls_get_addr
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# endif
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#endif
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/* Value used for dtv entries for which the allocation is delayed. */
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#define TLS_DTV_UNALLOCATED ((void *) -1l)
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