arch/nios2/include/asm/swab.h

File Facts

System

Linux kernel

Corpus path

arch/nios2/include/asm/swab.h

Extension

.h

Size

995 bytes

Lines

39

Domain

Architecture Layer

Bucket

arch/nios2

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
• asm-generic/swab.h

Detected Declarations

• function Copyright
• function __attribute__

Annotated Snippet

#ifndef _ASM_NIOS2_SWAB_H
#define _ASM_NIOS2_SWAB_H

#include <linux/types.h>
#include <asm-generic/swab.h>

#ifdef CONFIG_NIOS2_CI_SWAB_SUPPORT
#ifdef __GNUC__

#define __nios2_swab(x)		\
	__builtin_custom_ini(CONFIG_NIOS2_CI_SWAB_NO, (x))

static inline __attribute__((const)) __u16 __arch_swab16(__u16 x)
{
	return (__u16) __nios2_swab(((__u32) x) << 16);
}
#define __arch_swab16 __arch_swab16

static inline __attribute__((const)) __u32 __arch_swab32(__u32 x)
{
	return (__u32) __nios2_swab(x);
}
#define __arch_swab32 __arch_swab32

#endif /* __GNUC__ */
#endif /* CONFIG_NIOS2_CI_SWAB_SUPPORT */

#endif /* _ASM_NIOS2_SWAB_H */

Annotation

• Immediate include surface: `linux/types.h`, `asm-generic/swab.h`.
• Detected declarations: `function Copyright`, `function __attribute__`.
• Atlas domain: Architecture Layer / arch/nios2.
• 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.