arch/csky/abiv1/inc/abi/regdef.h

File Facts

System

Linux kernel

Corpus path

arch/csky/abiv1/inc/abi/regdef.h

Extension

.h

Size

582 bytes

Lines

32

Domain

Architecture Layer

Bucket

arch/csky

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

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

Annotated Snippet

#ifndef __ASM_CSKY_REGDEF_H
#define __ASM_CSKY_REGDEF_H

#ifdef __ASSEMBLER__
#define syscallid	r1
#else
#define syscallid	"r1"
#endif

#define regs_syscallid(regs) regs->regs[9]
#define regs_fp(regs) regs->regs[2]

/*
 * PSR format:
 * | 31 | 30-24 | 23-16 | 15 14 | 13-0 |
 *   S     CPID     VEC     TM
 *
 *    S: Super Mode
 * CPID: Coprocessor id, only 15 for MMU
 *  VEC: Exception Number
 *   TM: Trace Mode
 */
#define DEFAULT_PSR_VALUE	0x8f000000

#define SYSTRACE_SAVENUM	2

#define TRAP0_SIZE		2

#endif /* __ASM_CSKY_REGDEF_H */

Annotation

• Atlas domain: Architecture Layer / arch/csky.
• 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.