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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

647 bytes

Lines

35

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• asm/sigcontext.h
• asm/signal.h

Detected Declarations

• struct mcontext
• struct ucontext

Annotated Snippet

struct mcontext {
	int version;
	gregset_t gregs;
	fpregset_t fpregs;
};

#define MCONTEXT_VERSION 2

struct ucontext {
	unsigned long	  uc_flags;
	struct ucontext  *uc_link;
	stack_t		  uc_stack;
	struct mcontext	  uc_mcontext;
	unsigned long	  uc_filler[80];
	sigset_t	  uc_sigmask;	/* mask last for extensibility */
};

#endif

Annotation

• Immediate include surface: `asm/sigcontext.h`, `asm/signal.h`.
• Detected declarations: `struct mcontext`, `struct ucontext`.
• 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.