arch/hexagon/include/asm/kgdb.h

File Facts

System

Linux kernel

Corpus path

arch/hexagon/include/asm/kgdb.h

Extension

.h

Size

754 bytes

Lines

32

Domain

Architecture Layer

Bucket

arch/hexagon

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.

Dependency Surface

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

Detected Declarations

• function Copyright

Annotated Snippet

#ifndef __HEXAGON_KGDB_H__
#define __HEXAGON_KGDB_H__

#define BREAK_INSTR_SIZE 4
#define CACHE_FLUSH_IS_SAFE   1
#define BUFMAX       ((NUMREGBYTES * 2) + 512)

static inline void arch_kgdb_breakpoint(void)
{
	asm("trap0(#0xDB)");
}

/* Registers:
 * 32 gpr + sa0/1 + lc0/1 + m0/1 + gp + ugp + pred + pc = 42 total.
 * vm regs = psp+elr+est+badva = 4
 * syscall+restart = 2 more
 * also add cs0/1 = 2
 * so 48 = 42 + 4 + 2 + 2
 */
#define DBG_USER_REGS 42
#define DBG_MAX_REG_NUM (DBG_USER_REGS + 8)
#define NUMREGBYTES  (DBG_MAX_REG_NUM*4)

#endif /* __HEXAGON_KGDB_H__ */

Annotation

• Detected declarations: `function Copyright`.
• Atlas domain: Architecture Layer / arch/hexagon.
• 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.