arch/mips/include/asm/bitrev.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/bitrev.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/asm/bitrev.h
Extension
.h
Size
608 bytes
Lines
32
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __MIPS_ASM_BITREV_H__
#define __MIPS_ASM_BITREV_H__

#include <linux/swab.h>

static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
{
	u32 ret;

	asm("bitswap	%0, %1" : "=r"(ret) : "r"(__swab32(x)));
	return ret;
}

static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
{
	u16 ret;

	asm("bitswap	%0, %1" : "=r"(ret) : "r"(__swab16(x)));
	return ret;
}

static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
{
	u8 ret;

	asm("bitswap	%0, %1" : "=r"(ret) : "r"(x));
	return ret;
}

#endif /* __MIPS_ASM_BITREV_H__ */

Annotation

Implementation Notes