tools/perf/arch/arm64/tests/regs_load.S

Source file repositories/reference/linux-study-clean/tools/perf/arch/arm64/tests/regs_load.S

File Facts

System: Linux kernel
Corpus path: tools/perf/arch/arm64/tests/regs_load.S
Extension: .S
Size: 747 bytes
Lines: 48
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

linux/linkage.h

Detected Declarations

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

Annotated Snippet

#include <linux/linkage.h>

.text
.type perf_regs_load,%function
#define STR_REG(r)	str x##r, [x0, 8 * r]
#define LDR_REG(r)	ldr x##r, [x0, 8 * r]
#define SP	(8 * 31)
#define PC	(8 * 32)
SYM_FUNC_START(perf_regs_load)
	STR_REG(0)
	STR_REG(1)
	STR_REG(2)
	STR_REG(3)
	STR_REG(4)
	STR_REG(5)
	STR_REG(6)
	STR_REG(7)
	STR_REG(8)
	STR_REG(9)
	STR_REG(10)
	STR_REG(11)
	STR_REG(12)
	STR_REG(13)
	STR_REG(14)
	STR_REG(15)
	STR_REG(16)
	STR_REG(17)
	STR_REG(18)
	STR_REG(19)
	STR_REG(20)
	STR_REG(21)
	STR_REG(22)
	STR_REG(23)
	STR_REG(24)
	STR_REG(25)
	STR_REG(26)
	STR_REG(27)
	STR_REG(28)
	STR_REG(29)
	STR_REG(30)
	mov x1, sp
	str x1, [x0, #SP]
	str x30, [x0, #PC]
	LDR_REG(1)
	ret
SYM_FUNC_END(perf_regs_load)

Annotation

Immediate include surface: `linux/linkage.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.