arch/riscv/kernel/tests/module_test/test_sub64.S

File Facts

System

Linux kernel

Corpus path

arch/riscv/kernel/tests/module_test/test_sub64.S

Extension

.S

Size

336 bytes

Lines

26

Domain

Architecture Layer

Bucket

arch/riscv

Inferred role

Architecture Layer: arch/riscv

Status

atlas-only

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.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

.text
.global test_sub64
test_sub64:
#ifdef CONFIG_32BIT
	lw	a0, sub64
#else
	ld	a0, sub64
#endif
	addi	a0, a0, -32
	ret
first:
	.space 32
second:

.data
sub64:
	.reloc		sub64, R_RISCV_ADD64, second
	.reloc		sub64, R_RISCV_SUB64, first
	.word		0
	.word		0

Annotation

• Atlas domain: Architecture Layer / arch/riscv.
• 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.