change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_HWEIGHT_H
#define _ASM_X86_HWEIGHT_H
 
#include <asm/cpufeatures.h>
 
#ifdef CONFIG_64BIT
#define REG_IN "D"
#define REG_OUT "a"
#else
#define REG_IN "a"
#define REG_OUT "a"
#endif
 
static __always_inline unsigned int __arch_hweight32(unsigned int w)
{
    unsigned int res;
 
    asm (ALTERNATIVE("call __sw_hweight32", "popcntl %1, %0", X86_FEATURE_POPCNT)
             : "="REG_OUT (res)
             : REG_IN (w));
 
    return res;
}
 
static inline unsigned int __arch_hweight16(unsigned int w)
{
    return __arch_hweight32(w & 0xffff);
}
 
static inline unsigned int __arch_hweight8(unsigned int w)
{
    return __arch_hweight32(w & 0xff);
}
 
#ifdef CONFIG_X86_32
static inline unsigned long __arch_hweight64(__u64 w)
{
    return  __arch_hweight32((u32)w) +
        __arch_hweight32((u32)(w >> 32));
}
#else
static __always_inline unsigned long __arch_hweight64(__u64 w)
{
    unsigned long res;
 
    asm (ALTERNATIVE("call __sw_hweight64", "popcntq %1, %0", X86_FEATURE_POPCNT)
             : "="REG_OUT (res)
             : REG_IN (w));
 
    return res;
}
#endif /* CONFIG_X86_32 */
 
#endif