2009-03-04 04:28:35 +01:00
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/*
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* Copyright (C) 2008 The Android Open Source Project
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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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* * 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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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* 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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2013-10-09 03:50:24 +02:00
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#ifndef __BIONIC_PRIVATE_GET_TLS_H_
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#define __BIONIC_PRIVATE_GET_TLS_H_
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#if defined(__arm__)
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# define __get_tls() \
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({ void** __val; \
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__asm__("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \
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__val; })
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#elif defined(__mips__)
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# define __get_tls() \
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/* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \
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({ register void** __val asm("v1"); \
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__asm__(".set push\n" \
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".set mips32r2\n" \
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"rdhwr %0,$29\n" \
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".set pop\n" : "=r"(__val)); \
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__val; })
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#elif defined(__i386__)
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# define __get_tls() \
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({ void** __val; \
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__asm__("movl %%gs:0, %0" : "=r"(__val)); \
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__val; })
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#elif defined(__x86_64__)
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# define __get_tls() \
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({ void** __val; \
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__asm__("mov %%fs:0, %0" : "=r"(__val)); \
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__val; })
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#else
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#error unsupported architecture
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#endif
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#endif /* __BIONIC_PRIVATE_GET_TLS_H_ */
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