arch/parisc/kernel/kgdb.c

File Facts

System

Linux kernel

Corpus path

arch/parisc/kernel/kgdb.c

Extension

.c

Size

4440 bytes

Lines

211

Domain

Architecture Layer

Bucket

arch/parisc

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

• linux/kgdb.h
• linux/string.h
• linux/sched.h
• linux/notifier.h
• linux/kdebug.h
• linux/uaccess.h
• asm/ptrace.h
• asm/traps.h
• asm/processor.h
• asm/text-patching.h
• asm/cacheflush.h

Detected Declarations

• function __kgdb_notify
• function kgdb_notify
• function kgdb_arch_init
• function kgdb_arch_exit
• function pt_regs_to_gdb_regs
• function gdb_regs_to_pt_regs
• function sleeping_thread_to_gdb_regs
• function step_instruction_queue
• function kgdb_arch_set_pc
• function kgdb_arch_set_breakpoint
• function kgdb_arch_remove_breakpoint
• function kgdb_arch_handle_exception

Annotated Snippet

if (kgdb_hex2long(&p, &addr)) {
			kgdb_arch_set_pc(regs, addr);
		} else if (trap == 9 && regs->iir ==
				PARISC_KGDB_COMPILED_BREAK_INSN) {
			step_instruction_queue(regs);
			mtctl(-1, 0);
		} else {
			mtctl(0, 0);
		}
		regs->gr[0] |= PSW_R;
		return 0;

	}
	return -1;
}

Annotation

• Immediate include surface: `linux/kgdb.h`, `linux/string.h`, `linux/sched.h`, `linux/notifier.h`, `linux/kdebug.h`, `linux/uaccess.h`, `asm/ptrace.h`, `asm/traps.h`.
• Detected declarations: `function __kgdb_notify`, `function kgdb_notify`, `function kgdb_arch_init`, `function kgdb_arch_exit`, `function pt_regs_to_gdb_regs`, `function gdb_regs_to_pt_regs`, `function sleeping_thread_to_gdb_regs`, `function step_instruction_queue`, `function kgdb_arch_set_pc`, `function kgdb_arch_set_breakpoint`.
• Atlas domain: Architecture Layer / arch/parisc.
• 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.