arch/x86/um/shared/sysdep/stub.h

File Facts

System

Linux kernel

Corpus path

arch/x86/um/shared/sysdep/stub.h

Extension

.h

Size

422 bytes

Lines

18

Domain

Architecture Layer

Bucket

arch/x86

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

• asm/unistd.h
• sys/mman.h
• signal.h
• as-layout.h
• stub-data.h
• stub_32.h
• stub_64.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#include <asm/unistd.h>
#include <sys/mman.h>
#include <signal.h>
#include <as-layout.h>
#include <stub-data.h>

#ifdef __i386__
#include "stub_32.h"
#else
#include "stub_64.h"
#endif

extern void stub_segv_handler(int, siginfo_t *, void *);
extern void stub_syscall_handler(void);
extern void stub_signal_interrupt(int, siginfo_t *, void *);
extern void stub_signal_restorer(void);

Annotation

• Immediate include surface: `asm/unistd.h`, `sys/mman.h`, `signal.h`, `as-layout.h`, `stub-data.h`, `stub_32.h`, `stub_64.h`.
• Atlas domain: Architecture Layer / arch/x86.
• 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.