2a0b873065
If __get_tls has the right type, a lot of confusing casting can disappear. It was probably a mistake that __get_tls was exposed as a function for mips and x86 (but not arm), so let's (a) ensure that the __get_tls function always matches the macro, (b) that we have the function for arm too, and (c) that we don't have the function for any 64-bit architecture. Change-Id: Ie9cb989b66e2006524ad7733eb6e1a65055463be
61 lines
2.3 KiB
C
61 lines
2.3 KiB
C
/*
|
|
* Copyright (C) 2008 The Android Open Source Project
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef __BIONIC_PRIVATE_GET_TLS_H_
|
|
#define __BIONIC_PRIVATE_GET_TLS_H_
|
|
|
|
#if defined(__arm__)
|
|
# define __get_tls() \
|
|
({ void** __val; \
|
|
__asm__("mrc p15, 0, %0, c13, c0, 3" : "=r"(__val)); \
|
|
__val; })
|
|
#elif defined(__mips__)
|
|
# define __get_tls() \
|
|
/* On mips32r1, this goes via a kernel illegal instruction trap that's optimized for v1. */ \
|
|
({ register void** __val asm("v1"); \
|
|
__asm__(".set push\n" \
|
|
".set mips32r2\n" \
|
|
"rdhwr %0,$29\n" \
|
|
".set pop\n" : "=r"(__val)); \
|
|
__val; })
|
|
#elif defined(__i386__)
|
|
# define __get_tls() \
|
|
({ void** __val; \
|
|
__asm__("movl %%gs:0, %0" : "=r"(__val)); \
|
|
__val; })
|
|
#elif defined(__x86_64__)
|
|
# define __get_tls() \
|
|
({ void** __val; \
|
|
__asm__("mov %%fs:0, %0" : "=r"(__val)); \
|
|
__val; })
|
|
#else
|
|
#error unsupported architecture
|
|
#endif
|
|
|
|
#endif /* __BIONIC_PRIVATE_GET_TLS_H_ */
|