271ce40239
It should fix ck_pr_[load|store]_ptr on mips and riscv, make sure no *fence instructions are used on i386, as older cpus don't support it, and make sure we don't rely on gcc builtins that can lead to calls to libatomic when linked with -O0. MFC after: 1 week
174 lines
3.7 KiB
C
174 lines
3.7 KiB
C
/*
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* Copyright 2009-2015 Samy Al Bahra.
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* Copyright 2014 Paul Khuong.
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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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#ifndef CK_CC_H
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#define CK_CC_H
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#if defined(__GNUC__) || defined(__SUNPRO_C)
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#include "gcc/ck_cc.h"
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#endif
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#ifndef CK_CC_RESTRICT
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#define CK_CC_RESTRICT
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#endif
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#ifndef CK_CC_INLINE
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#define CK_CC_INLINE inline
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#endif
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#ifndef CK_CC_FORCE_INLINE
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#define CK_CC_FORCE_INLINE inline
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#endif
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#define CK_CC_DECONST_PTR(X) ((void *)(uintptr_t)(X))
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/*
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* Container function.
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* This relies on (compiler) implementation-defined behavior.
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*/
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#define CK_CC_CONTAINER(F, T, M, N) \
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CK_CC_INLINE static T * \
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N(F *p) \
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{ \
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F *n = p; \
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return (T *)(void *)(((char *)n) - ((size_t)&((T *)0)->M)); \
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}
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#define CK_CC_PAD(x) union { char pad[x]; }
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#ifndef CK_CC_ALIASED
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#define CK_CC_ALIASED
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#endif
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#ifndef CK_CC_UNUSED
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#define CK_CC_UNUSED
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#endif
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#ifndef CK_CC_USED
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#define CK_CC_USED
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#endif
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#ifndef CK_CC_IMM
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#define CK_CC_IMM
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#endif
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#ifndef CK_CC_PACKED
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#define CK_CC_PACKED
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#endif
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#ifndef CK_CC_WEAKREF
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#define CK_CC_WEAKREF
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#endif
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#ifndef CK_CC_ALIGN
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#define CK_CC_ALIGN(X)
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#endif
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#ifndef CK_CC_CACHELINE
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#define CK_CC_CACHELINE
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#endif
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#ifndef CK_CC_LIKELY
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#define CK_CC_LIKELY(x) x
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#endif
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#ifndef CK_CC_UNLIKELY
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#define CK_CC_UNLIKELY(x) x
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#endif
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#ifndef CK_CC_TYPEOF
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#define CK_CC_TYPEOF(X, DEFAULT) (DEFAULT)
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#endif
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#define CK_F_CC_FFS_G(L, T) \
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CK_CC_INLINE static int \
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ck_cc_##L(T v) \
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{ \
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unsigned int i; \
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\
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if (v == 0) \
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return 0; \
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\
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for (i = 1; (v & 1) == 0; i++, v >>= 1); \
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return i; \
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}
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#ifndef CK_F_CC_FFS
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#define CK_F_CC_FFS
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CK_F_CC_FFS_G(ffs, unsigned int)
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#endif /* CK_F_CC_FFS */
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#ifndef CK_F_CC_FFSL
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#define CK_F_CC_FFSL
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CK_F_CC_FFS_G(ffsl, unsigned long)
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#endif /* CK_F_CC_FFSL */
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#ifndef CK_F_CC_FFSLL
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#define CK_F_CC_FFSLL
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CK_F_CC_FFS_G(ffsll, unsigned long long)
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#endif /* CK_F_CC_FFSLL */
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#undef CK_F_CC_FFS_G
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#ifndef CK_F_CC_CTZ
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#define CK_F_CC_CTZ
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CK_CC_INLINE static int
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ck_cc_ctz(unsigned int x)
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{
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unsigned int i;
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if (x == 0)
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return 0;
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for (i = 0; (x & 1) == 0; i++, x >>= 1);
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return i;
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}
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#endif
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#ifndef CK_F_CC_POPCOUNT
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#define CK_F_CC_POPCOUNT
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CK_CC_INLINE static int
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ck_cc_popcount(unsigned int x)
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{
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unsigned int acc;
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for (acc = 0; x != 0; x >>= 1)
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acc += x & 1;
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return acc;
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}
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#endif
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#ifdef __cplusplus
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#define CK_CPP_CAST(type, arg) static_cast<type>(arg)
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#else
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#define CK_CPP_CAST(type, arg) arg
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#endif
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#endif /* CK_CC_H */
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