arch/arm/mach-rpc/fiq.S

File Facts

System

Linux kernel

Corpus path

arch/arm/mach-rpc/fiq.S

Extension

.S

Size

437 bytes

Lines

19

Domain

Architecture Layer

Bucket

arch/arm

Inferred role

Architecture Layer: arch/arm

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

• linux/linkage.h
• asm/assembler.h
• mach/hardware.h

Detected Declarations

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

Annotated Snippet

#include <linux/linkage.h>
#include <asm/assembler.h>
#include <mach/hardware.h>

	.equ	ioc_base_high, IOC_BASE & 0xff000000
	.equ	ioc_base_low, IOC_BASE & 0x00ff0000

	.text
	.global	rpc_default_fiq_end
ENTRY(rpc_default_fiq_start)
	mov	r12, #ioc_base_high
	.if	ioc_base_low
	orr	r12, r12, #ioc_base_low
	.endif
	strb	r12, [r12, #0x38]	@ Disable FIQ register
	subs	pc, lr, #4
rpc_default_fiq_end:

Annotation

• Immediate include surface: `linux/linkage.h`, `asm/assembler.h`, `mach/hardware.h`.
• Atlas domain: Architecture Layer / arch/arm.
• 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.