arch/m68k/include/uapi/asm/swab.h

File Facts

System

Linux kernel

Corpus path

arch/m68k/include/uapi/asm/swab.h

Extension

.h

Size

665 bytes

Lines

29

Domain

Architecture Layer

Bucket

arch/m68k

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

• linux/types.h
• linux/compiler.h

Detected Declarations

• function __arch_swab32
• function __arch_swab32

Annotated Snippet

#ifndef _M68K_SWAB_H
#define _M68K_SWAB_H

#include <linux/types.h>
#include <linux/compiler.h>

#define __SWAB_64_THRU_32__

#if defined (__mcfisaaplus__) || defined (__mcfisac__)
static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
	__asm__("byterev %0" : "=d" (val) : "0" (val));
	return val;
}

#define __arch_swab32 __arch_swab32
#elif !defined(__mcoldfire__)

static inline __attribute_const__ __u32 __arch_swab32(__u32 val)
{
	__asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val));
	return val;
}
#define __arch_swab32 __arch_swab32
#endif

#endif /* _M68K_SWAB_H */

Annotation

• Immediate include surface: `linux/types.h`, `linux/compiler.h`.
• Detected declarations: `function __arch_swab32`, `function __arch_swab32`.
• Atlas domain: Architecture Layer / arch/m68k.
• 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.