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

File Facts

System

Linux kernel

Corpus path

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

Extension

.h

Size

1674 bytes

Lines

93

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"

/* POS MUST BE 16 ALIGNED! */
#define PUSH_VMX(pos,reg) \
	li	reg,pos; \
	stvx	v20,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v21,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v22,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v23,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v24,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v25,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v26,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v27,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v28,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v29,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v30,reg,%r1; \
	addi	reg,reg,16; \
	stvx	v31,reg,%r1;

/* POS MUST BE 16 ALIGNED! */
#define POP_VMX(pos,reg) \
	li	reg,pos; \
	lvx	v20,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v21,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v22,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v23,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v24,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v25,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v26,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v27,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v28,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v29,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v30,reg,%r1; \
	addi	reg,reg,16; \
	lvx	v31,reg,%r1;

/*
 * Careful this will 'clobber' vmx (by design)
 * Don't call this from C
 */
FUNC_START(load_vmx)
	li	r5,0
	lvx	v20,r5,r3
	addi	r5,r5,16
	lvx	v21,r5,r3
	addi	r5,r5,16
	lvx	v22,r5,r3
	addi	r5,r5,16
	lvx	v23,r5,r3
	addi	r5,r5,16
	lvx	v24,r5,r3
	addi	r5,r5,16
	lvx	v25,r5,r3
	addi	r5,r5,16
	lvx	v26,r5,r3
	addi	r5,r5,16
	lvx	v27,r5,r3
	addi	r5,r5,16
	lvx	v28,r5,r3
	addi	r5,r5,16
	lvx	v29,r5,r3
	addi	r5,r5,16
	lvx	v30,r5,r3
	addi	r5,r5,16
	lvx	v31,r5,r3
	blr
FUNC_END(load_vmx)

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.