arch/powerpc/math-emu/math_efp.c
Source file repositories/reference/linux-study-clean/arch/powerpc/math-emu/math_efp.c
File Facts
- System
- Linux kernel
- Corpus path
arch/powerpc/math-emu/math_efp.c- Extension
.c- Size
- 20748 bytes
- Lines
- 932
- Domain
- Architecture Layer
- Bucket
- arch/powerpc
- 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
linux/types.hlinux/prctl.hlinux/module.hlinux/uaccess.hasm/reg.hasm/sfp-machine.hmath-emu/soft-fp.hmath-emu/single.hmath-emu/double.h
Detected Declarations
function insn_typefunction do_spe_mathemufunction speround_handlerfunction spe_mathemu_initmodule init spe_mathemu_init
Annotated Snippet
module_init(spe_mathemu_init);Annotation
- Immediate include surface: `linux/types.h`, `linux/prctl.h`, `linux/module.h`, `linux/uaccess.h`, `asm/reg.h`, `asm/sfp-machine.h`, `math-emu/soft-fp.h`, `math-emu/single.h`.
- Detected declarations: `function insn_type`, `function do_spe_mathemu`, `function speround_handler`, `function spe_mathemu_init`, `module init spe_mathemu_init`.
- Atlas domain: Architecture Layer / arch/powerpc.
- 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.