tools/testing/selftests/powerpc/include/vsx_asm.h

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/powerpc/include/vsx_asm.h

Extension

.h

Size

1200 bytes

Lines

68

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: implementation source

Status

source 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.

Dependency Surface

• basic_asm.h

Detected Declarations

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

Annotated Snippet

#include "basic_asm.h"

/*
 * Careful this will 'clobber' vsx (by design), VSX are always
 * volatile though so unlike vmx this isn't so much of an issue
 * Still should avoid calling from C
 */
FUNC_START(load_vsx)
	li	r5,0
	lxvd2x	vs20,r5,r3
	addi	r5,r5,16
	lxvd2x	vs21,r5,r3
	addi	r5,r5,16
	lxvd2x	vs22,r5,r3
	addi	r5,r5,16
	lxvd2x	vs23,r5,r3
	addi	r5,r5,16
	lxvd2x	vs24,r5,r3
	addi	r5,r5,16
	lxvd2x	vs25,r5,r3
	addi	r5,r5,16
	lxvd2x	vs26,r5,r3
	addi	r5,r5,16
	lxvd2x	vs27,r5,r3
	addi	r5,r5,16
	lxvd2x	vs28,r5,r3
	addi	r5,r5,16
	lxvd2x	vs29,r5,r3
	addi	r5,r5,16
	lxvd2x	vs30,r5,r3
	addi	r5,r5,16
	lxvd2x	vs31,r5,r3
	blr
FUNC_END(load_vsx)

FUNC_START(store_vsx)
	li	r5,0
	stxvd2x	vs20,r5,r3
	addi	r5,r5,16
	stxvd2x	vs21,r5,r3
	addi	r5,r5,16
	stxvd2x	vs22,r5,r3
	addi	r5,r5,16
	stxvd2x	vs23,r5,r3
	addi	r5,r5,16
	stxvd2x	vs24,r5,r3
	addi	r5,r5,16
	stxvd2x	vs25,r5,r3
	addi	r5,r5,16
	stxvd2x	vs26,r5,r3
	addi	r5,r5,16
	stxvd2x	vs27,r5,r3
	addi	r5,r5,16
	stxvd2x	vs28,r5,r3
	addi	r5,r5,16
	stxvd2x	vs29,r5,r3
	addi	r5,r5,16
	stxvd2x	vs30,r5,r3
	addi	r5,r5,16
	stxvd2x	vs31,r5,r3
	blr
FUNC_END(store_vsx)

Annotation

• Immediate include surface: `basic_asm.h`.
• Atlas domain: Support Tooling And Documentation / tools.
• 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.