tools/testing/selftests/arm64/bti/syscall.S

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/arm64/bti/syscall.S

Extension

.S

Size

326 bytes

Lines

24

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: syscall or user/kernel boundary

Status

core implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.
• Defines or participates in a user/kernel boundary; inspect argument validation, copy_from_user/copy_to_user, credentials, and dispatch target.

Dependency Surface

• assembler.h

Detected Declarations

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

Annotated Snippet

#include "assembler.h"

startfn syscall
	bti	c
	mov	w8, w0
	mov	x0, x1
	mov	x1, x2
	mov	x2, x3
	mov	x3, x4
	mov	x4, x5
	mov	x5, x6
	mov	x6, x7
	svc	#0
	ret
endfn

emit_aarch64_feature_1_and

Annotation

• Immediate include surface: `assembler.h`.
• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: core 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.