/usr/src/linux-headers-5.15.0-190/arch/csky/include/asm
Edit: /usr/src/linux-headers-5.15.0-190/arch/csky/include/asm/bitops.h (1363B)
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_CSKY_BITOPS_H
#define __ASM_CSKY_BITOPS_H
#include
#include
/*
* asm-generic/bitops/ffs.h
*/
static inline int ffs(int x)
{
if (!x)
return 0;
asm volatile (
"brev %0\n"
"ff1 %0\n"
"addi %0, 1\n"
: "=&r"(x)
: "0"(x));
return x;
}
/*
* asm-generic/bitops/__ffs.h
*/
static __always_inline unsigned long __ffs(unsigned long x)
{
asm volatile (
"brev %0\n"
"ff1 %0\n"
: "=&r"(x)
: "0"(x));
return x;
}
/*
* asm-generic/bitops/fls.h
*/
static __always_inline int fls(unsigned int x)
{
asm volatile(
"ff1 %0\n"
: "=&r"(x)
: "0"(x));
return (32 - x);
}
/*
* asm-generic/bitops/__fls.h
*/
static __always_inline unsigned long __fls(unsigned long x)
{
return fls(x) - 1;
}
#include
#include
#include
#ifndef _LINUX_BITOPS_H
#error only can be included directly
#endif
#include
#include
#include
#include
/*
* bug fix, why only could use atomic!!!!
*/
#include
#include
#include
#endif /* __ASM_CSKY_BITOPS_H */