arch/arm/nwfpe/fpmodule.c

Source file repositories/reference/linux-study-clean/arch/arm/nwfpe/fpmodule.c

File Facts

System: Linux kernel
Corpus path: arch/arm/nwfpe/fpmodule.c
Extension: .c
Size: 4709 bytes
Lines: 179
Domain: Architecture Layer
Bucket: arch/arm
Inferred role: Architecture Layer: exported/initcall integration point
Status: integration implementation candidate

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.
Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
Touches user memory; correctness depends on fault-safe copying and privilege boundary handling.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

fpa11.h
linux/module.h
linux/moduleparam.h
linux/errno.h
linux/types.h
linux/kernel.h
linux/signal.h
linux/sched/signal.h
linux/init.h
asm/thread_notify.h
softfloat.h
fpopcode.h
fpmodule.h
fpa11.inl

Detected Declarations

function nwfpe_notify
function fpe_init
function fpe_exit
function float_raise
module init fpe_init

Annotated Snippet

module_init(fpe_init);
module_exit(fpe_exit);

MODULE_AUTHOR("Scott Bambrough <scottb@rebel.com>");
MODULE_DESCRIPTION("NWFPE floating point emulator (" NWFPE_BITS " precision)");
MODULE_LICENSE("GPL");

#ifdef CONFIG_DEBUG_USER
module_param(debug, int, 0644);
#endif

Annotation

Immediate include surface: `fpa11.h`, `linux/module.h`, `linux/moduleparam.h`, `linux/errno.h`, `linux/types.h`, `linux/kernel.h`, `linux/signal.h`, `linux/sched/signal.h`.
Detected declarations: `function nwfpe_notify`, `function fpe_init`, `function fpe_exit`, `function float_raise`, `module init fpe_init`.
Atlas domain: Architecture Layer / arch/arm.
Implementation status: integration implementation candidate.
This snippet crosses the user/kernel memory boundary; validate fault handling and access checks before translating the pattern.

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.