arch/sh/kernel/head_32.S

File Facts

System

Linux kernel

Corpus path

arch/sh/kernel/head_32.S

Extension

.S

Size

8525 bytes

Lines

366

Domain

Architecture Layer

Bucket

arch/sh

Inferred role

Architecture Layer: arch/sh

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/init.h
• linux/linkage.h
• asm/thread_info.h
• asm/mmu.h
• cpu/mmu_context.h

Detected Declarations

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

Annotated Snippet

5:	.long	start_kernel
6:	.long	cpu_init
7:	.long	init_thread_union
#if defined(CONFIG_OF_EARLY_FLATTREE)
8:	.long	sh_fdt_init
#endif

#ifdef CONFIG_PMB
.LPMB_ADDR:		.long	PMB_ADDR
.LPMB_DATA:		.long	PMB_DATA
.LPMB_DATA_MASK:	.long	PMB_PFN_MASK | PMB_V
.LFIRST_ADDR_ENTRY:	.long	PAGE_OFFSET | PMB_V
.LFIRST_DATA_ENTRY:	.long	__MEMORY_START | PMB_V
.LMMUCR:		.long	MMUCR
.LMEMORY_SIZE:		.long	__MEMORY_SIZE
#ifdef CONFIG_UNCACHED_MAPPING
.Lcached_to_uncached:	.long	cached_to_uncached
.Luncached_size:	.long	uncached_size
#endif
#endif

Annotation

• Immediate include surface: `linux/init.h`, `linux/linkage.h`, `asm/thread_info.h`, `asm/mmu.h`, `cpu/mmu_context.h`.
• Atlas domain: Architecture Layer / arch/sh.
• 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.