arch/sparc/kernel/sys32.S

File Facts

System

Linux kernel

Corpus path

arch/sparc/kernel/sys32.S

Extension

.S

Size

476 bytes

Lines

21

Domain

Architecture Layer

Bucket

arch/sparc

Inferred role

Architecture Layer: arch/sparc

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

• asm/errno.h

Detected Declarations

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

Annotated Snippet

#include <asm/errno.h>

/* NOTE: call as jump breaks return stack, we have to avoid that */

	.text

	.globl		sys32_mmap2
sys32_mmap2:
	sethi		%hi(sys_mmap), %g1
	jmpl		%g1 + %lo(sys_mmap), %g0
	 sllx		%o5, 12, %o5

Annotation

• Immediate include surface: `asm/errno.h`.
• Atlas domain: Architecture Layer / arch/sparc.
• 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.