tools/testing/selftests/powerpc/pmu/branch_loops.S

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/powerpc/pmu/branch_loops.S

Extension

.S

Size

345 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

• ppc-asm.h

Detected Declarations

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

Annotated Snippet

#include <ppc-asm.h>

	.text

#define ITER_SHIFT	31

FUNC_START(indirect_branch_loop)
	li	r3, 1
	sldi	r3, r3, ITER_SHIFT

1:	cmpdi	r3, 0
	beqlr

	addi	r3, r3, -1

	ld	r4, 2f@got(%r2)
	mtctr	r4
	bctr

	.balign 32
2:	b	1b

FUNC_END(indirect_branch_loop)

Annotation

• Immediate include surface: `ppc-asm.h`.
• 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.