tools/testing/selftests/x86/clang_helpers_64.S

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/x86/clang_helpers_64.S

Extension

.S

Size

564 bytes

Lines

29

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: tools

Status

atlas-only

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

.global dereference_seg_base

dereference_seg_base:
	mov %gs:(0), %rax
	ret

.global test_page
.global test_syscall_insn

.pushsection ".text", "ax"
.balign 4096
test_page: .globl test_page
	.fill 4094,1,0xcc

test_syscall_insn:
	syscall

.ifne . - test_page - 4096
	.error "test page is not one page long"
.endif
.popsection

.section .note.GNU-stack,"",%progbits

Annotation

• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: atlas-only.

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.