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
142 lines
3.5 KiB
C
142 lines
3.5 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_GCC_CC_H
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#define CK_GCC_CC_H
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#include <ck_md.h>
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#ifdef __SUNPRO_C
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#define CK_CC_UNUSED
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#define CK_CC_USED
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#define CK_CC_IMM
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#define CK_CC_IMM_U32
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#else
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#define CK_CC_UNUSED __attribute__((unused))
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#define CK_CC_USED __attribute__((used))
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#define CK_CC_IMM "i"
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#if defined(__x86_64__) || defined(__x86__)
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#define CK_CC_IMM_U32 "Z"
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#define CK_CC_IMM_S32 "e"
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#else
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#define CK_CC_IMM_U32 CK_CC_IMM
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#define CK_CC_IMM_S32 CK_CC_IMM
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#endif /* __x86_64__ || __x86__ */
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#endif
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#ifdef __OPTIMIZE__
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#define CK_CC_INLINE CK_CC_UNUSED inline
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#else
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#define CK_CC_INLINE CK_CC_UNUSED
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#endif
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#define CK_CC_FORCE_INLINE CK_CC_UNUSED __attribute__((always_inline)) inline
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#define CK_CC_RESTRICT __restrict__
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/*
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* Packed attribute.
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*/
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#define CK_CC_PACKED __attribute__((packed))
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/*
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* Weak reference.
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*/
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#define CK_CC_WEAKREF __attribute__((weakref))
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/*
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* Alignment attribute.
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*/
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#define CK_CC_ALIGN(B) __attribute__((aligned(B)))
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/*
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* Cache align.
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*/
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#define CK_CC_CACHELINE CK_CC_ALIGN(CK_MD_CACHELINE)
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/*
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* These are functions which should be avoided.
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*/
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#ifdef __freestanding__
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#pragma GCC poison malloc free
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#endif
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/*
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* Branch execution hints.
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*/
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#define CK_CC_LIKELY(x) (__builtin_expect(!!(x), 1))
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#define CK_CC_UNLIKELY(x) (__builtin_expect(!!(x), 0))
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/*
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* Some compilers are overly strict regarding aliasing semantics.
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* Unfortunately, in many cases it makes more sense to pay aliasing
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* cost rather than overly expensive register spillage.
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*/
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#define CK_CC_ALIASED __attribute__((__may_alias__))
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/*
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* Compile-time typeof
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*/
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#define CK_CC_TYPEOF(X, DEFAULT) __typeof__(X)
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/*
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* Portability wrappers for bitwise operations.
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*/
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#ifndef CK_MD_CC_BUILTIN_DISABLE
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#define CK_F_CC_FFS
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CK_CC_INLINE static int
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ck_cc_ffs(unsigned int x)
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{
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return __builtin_ffsl(x);
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}
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#define CK_F_CC_FFSL
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CK_CC_INLINE static int
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ck_cc_ffsl(unsigned long x)
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{
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return __builtin_ffsll(x);
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}
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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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return __builtin_ctz(x);
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}
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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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return __builtin_popcount(x);
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}
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#endif /* CK_MD_CC_BUILTIN_DISABLE */
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#endif /* CK_GCC_CC_H */
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