fab328f17f
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
73 lines
3.0 KiB
C
73 lines
3.0 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2004 Doug Rabson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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/*
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* Semi-public interface from thread libraries to rtld for managing
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* TLS.
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*/
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#ifndef _RTLD_TLS_H_
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#define _RTLD_TLS_H_
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/*
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* Allocate a TLS block for a new thread. The memory allocated will
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* include 'tcbsize' bytes aligned to a 'tcbalign' boundary (in bytes)
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* for the thread library's private purposes. The location of the TCB
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* block is returned by this function. For architectures using
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* 'Variant I' TLS, the thread local storage follows the TCB, and for
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* 'Variant II', the thread local storage precedes it. For
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* architectures using the 'Variant II' model (e.g. i386, amd64,
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* sparc64), the TCB must begin with two pointer fields which are used
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* by rtld for its TLS implementation. For the 'Variant I' model, the
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* TCB must begin with a single pointer field for rtld's
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* implementation.
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*
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* If the value of 'oldtls' is non-NULL, the new TLS block will be
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* initialised using the values contained in 'oldtls' and 'oldtls'
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* will be freed. This is typically used when initialising a thread
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* library to migrate from using the initial bootstrap TLS block
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* created by rtld to one which contains suitable thread library
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* private data.
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*
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* The value returned from this function is suitable for installing
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* directly into the thread pointer register.
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*/
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void *_rtld_allocate_tls(void* oldtls, size_t tcbsize, size_t tcbalign)
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__exported;
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/*
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* Free a TLS block allocated using _rtld_allocate_tls(). The tcbsize
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* and tcbalign parameters must be the same as those used to allocate
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* the block.
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*/
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void _rtld_free_tls(void *tcb, size_t tcbsize, size_t tcbalign) __exported;
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#endif
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