mirror of git://sourceware.org/git/glibc.git
48 lines
1.5 KiB
ArmAsm
48 lines
1.5 KiB
ArmAsm
/* Copyright (C) 2003, 2007 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <kernel-features.h>
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/* All locks in libc are private. Use the kernel feature if possible. */
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#define FUTEX_PRIVATE_FLAG 128
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#ifdef __ASSUME_PRIVATE_FUTEX
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# define FUTEX_WAIT (0 | FUTEX_PRIVATE_FLAG)
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# define FUTEX_WAKE (1 | FUTEX_PRIVATE_FLAG)
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#else
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# define LOAD_FUTEX_WAIT(reg,tmp) \
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stc gbr, tmp ; \
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mov.w 99f, reg ; \
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add reg, tmp ; \
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bra 98f ; \
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mov.l @tmp, reg ; \
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99: .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE ; \
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98:
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# define LOAD_FUTEX_WAKE(reg,tmp) \
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stc gbr, tmp ; \
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mov.w 99f, reg ; \
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add reg, tmp ; \
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mov.l @tmp, reg ; \
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bra 98f ; \
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mov #FUTEX_WAKE, tmp ; \
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99: .word PRIVATE_FUTEX - TLS_PRE_TCB_SIZE ; \
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98: or tmp, reg
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#endif
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#include "lowlevellock.S"
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