arch/arm64/include/asm/bitrev.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/bitrev.h

Extension

.h

Size

452 bytes

Lines

21

Domain

Architecture Layer

Bucket

arch/arm64

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.

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

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• function __arch_bitrev32
• function __arch_bitrev16
• function __arch_bitrev8

Annotated Snippet

#ifndef __ASM_BITREV_H
#define __ASM_BITREV_H
static __always_inline __attribute_const__ u32 __arch_bitrev32(u32 x)
{
	__asm__ ("rbit %w0, %w1" : "=r" (x) : "r" (x));
	return x;
}

static __always_inline __attribute_const__ u16 __arch_bitrev16(u16 x)
{
	return __arch_bitrev32((u32)x) >> 16;
}

static __always_inline __attribute_const__ u8 __arch_bitrev8(u8 x)
{
	return __arch_bitrev32((u32)x) >> 24;
}

#endif

Annotation

• Detected declarations: `function __arch_bitrev32`, `function __arch_bitrev16`, `function __arch_bitrev8`.
• Atlas domain: Architecture Layer / arch/arm64.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.