arch/alpha/lib/copy_page.S

File Facts

System

Linux kernel

Corpus path

arch/alpha/lib/copy_page.S

Extension

.S

Size

622 bytes

Lines

52

Domain

Architecture Layer

Bucket

arch/alpha

Inferred role

Architecture Layer: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.

Dependency Surface

• linux/export.h

Detected Declarations

• export copy_page

Annotated Snippet

#include <linux/export.h>
	.text
	.align 4
	.global copy_page
	.ent copy_page
copy_page:
	.prologue 0

	lda	$18,128
	nop
	unop
	nop

1:	ldq	$0,0($17)
	ldq	$1,8($17)
	ldq	$2,16($17)
	ldq	$3,24($17)

	ldq	$4,32($17)
	ldq	$5,40($17)
	ldq	$6,48($17)
	ldq	$7,56($17)

	stq	$0,0($16)
	subq	$18,1,$18
	stq	$1,8($16)
	addq	$17,64,$17

	stq	$2,16($16)
	stq	$3,24($16)
	stq	$4,32($16)
	stq	$5,40($16)

	stq	$6,48($16)
	stq	$7,56($16)
	addq	$16,64,$16
	bne	$18, 1b

	ret
	nop
	unop
	nop

	.end copy_page
	EXPORT_SYMBOL(copy_page)

Annotation

• Immediate include surface: `linux/export.h`.
• Detected declarations: `export copy_page`.
• Atlas domain: Architecture Layer / arch/alpha.
• Implementation status: integration 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.