threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
64 lines
1.3 KiB
C
64 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef _ASM_X86_HWEIGHT_H
|
|
#define _ASM_X86_HWEIGHT_H
|
|
|
|
#include <asm/cpufeatures.h>
|
|
|
|
#ifdef CONFIG_64BIT
|
|
/* popcnt %edi, %eax */
|
|
#define POPCNT32 ".byte 0xf3,0x0f,0xb8,0xc7"
|
|
/* popcnt %rdi, %rax */
|
|
#define POPCNT64 ".byte 0xf3,0x48,0x0f,0xb8,0xc7"
|
|
#define REG_IN "D"
|
|
#define REG_OUT "a"
|
|
#else
|
|
/* popcnt %eax, %eax */
|
|
#define POPCNT32 ".byte 0xf3,0x0f,0xb8,0xc0"
|
|
#define REG_IN "a"
|
|
#define REG_OUT "a"
|
|
#endif
|
|
|
|
#define __HAVE_ARCH_SW_HWEIGHT
|
|
|
|
static __always_inline unsigned int __arch_hweight32(unsigned int w)
|
|
{
|
|
unsigned int res;
|
|
|
|
asm (ALTERNATIVE("call __sw_hweight32", POPCNT32, 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", POPCNT64, X86_FEATURE_POPCNT)
|
|
: "="REG_OUT (res)
|
|
: REG_IN (w));
|
|
|
|
return res;
|
|
}
|
|
#endif /* CONFIG_X86_32 */
|
|
|
|
#endif
|