arch/mips/dec/prom/locore.S

File Facts

System

Linux kernel

Corpus path

arch/mips/dec/prom/locore.S

Extension

.S

Size

478 bytes

Lines

31

Domain

Architecture Layer

Bucket

arch/mips

Inferred role

Architecture Layer: arch/mips

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/asm.h
• asm/regdef.h
• asm/mipsregs.h

Detected Declarations

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

Annotated Snippet

#include <asm/asm.h>
#include <asm/regdef.h>
#include <asm/mipsregs.h>

	.text

/*
 * Simple general exception handling routine. This one is used for the
 * Memory sizing routine for pmax machines. HK
 */

NESTED(genexcept_early, 0, sp)
	.set	noat
	.set	noreorder

	mfc0	k0, CP0_STATUS
	la	k1, mem_err

	sw	k0, 0(k1)

	mfc0	k0, CP0_EPC
	nop
	addiu	k0, 4		# skip the causing instruction
	jr	k0
	 rfe
END(genexcept_early)

Annotation

• Immediate include surface: `asm/asm.h`, `asm/regdef.h`, `asm/mipsregs.h`.
• Atlas domain: Architecture Layer / arch/mips.
• 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.