arch/m68k/68000/head.S

File Facts

System

Linux kernel

Corpus path

arch/m68k/68000/head.S

Extension

.S

Size

8421 bytes

Lines

242

Domain

Architecture Layer

Bucket

arch/m68k

Inferred role

Architecture Layer: arch/m68k

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.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.

Dependency Surface

• linux/linkage.h
• linux/init.h
• asm/asm-offsets.h
• asm/thread_info.h

Detected Declarations

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

Annotated Snippet

jsr	start_kernel			/* start Linux kernel */
_exit:
	jmp	_exit				/* should never get here */

Annotation

• Immediate include surface: `linux/linkage.h`, `linux/init.h`, `asm/asm-offsets.h`, `asm/thread_info.h`.
• Atlas domain: Architecture Layer / arch/m68k.
• Implementation status: atlas-only.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.