arch/arm64/include/asm/semihost.h

File Facts

System

Linux kernel

Corpus path

arch/arm64/include/asm/semihost.h

Extension

.h

Size

537 bytes

Lines

25

Domain

Architecture Layer

Bucket

arch/arm64

Inferred role

Architecture Layer: implementation source

Status

source 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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct uart_port
• function smh_putc

Annotated Snippet

#ifndef _ARM64_SEMIHOST_H_
#define _ARM64_SEMIHOST_H_

struct uart_port;

static inline void smh_putc(struct uart_port *port, unsigned char c)
{
	asm volatile("mov  x1, %0\n"
		     "mov  x0, #3\n"
		     "hlt  0xf000\n"
		     : : "r" (&c) : "x0", "x1", "memory");
}

#endif /* _ARM64_SEMIHOST_H_ */

Annotation

• Detected declarations: `struct uart_port`, `function smh_putc`.
• Atlas domain: Architecture Layer / arch/arm64.
• Implementation status: source implementation candidate.

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.