arch/sparc/lib/ashrdi3.S

File Facts

System

Linux kernel

Corpus path

arch/sparc/lib/ashrdi3.S

Extension

.S

Size

646 bytes

Lines

41

Domain

Architecture Layer

Bucket

arch/sparc

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
• linux/linkage.h

Detected Declarations

• export __ashrdi3

Annotated Snippet

#include <linux/export.h>
#include <linux/linkage.h>

	.text
ENTRY(__ashrdi3)
	tst	%o2
	be	3f
	 or	%g0, 32, %g2

	sub	%g2, %o2, %g2

	tst	%g2
	bg	1f
	 sra	%o0, %o2, %o4

	sra	%o0, 31, %o4
	sub	%g0, %g2, %g2
	ba	2f
	 sra	%o0, %g2, %o5

1:
	sll	%o0, %g2, %g3
	srl	%o1, %o2, %g2
	or	%g2, %g3, %o5
2:
	or	%g0, %o4, %o0
	or	%g0, %o5, %o1
3:
	jmpl	%o7 + 8, %g0
	 nop
ENDPROC(__ashrdi3)
EXPORT_SYMBOL(__ashrdi3)

Annotation

• Immediate include surface: `linux/export.h`, `linux/linkage.h`.
• Detected declarations: `export __ashrdi3`.
• Atlas domain: Architecture Layer / arch/sparc.
• 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.