arch/mips/include/asm/kgdb.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/kgdb.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/asm/kgdb.h
Extension
.h
Size
1218 bytes
Lines
46
Domain
Architecture Layer
Bucket
arch/mips
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.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ASM_KGDB_H_
#define __ASM_KGDB_H_

#ifdef __KERNEL__

#include <asm/sgidefs.h>

#if (_MIPS_ISA == _MIPS_ISA_MIPS1) || (_MIPS_ISA == _MIPS_ISA_MIPS2) || \
	(_MIPS_ISA == _MIPS_ISA_MIPS32)

#define KGDB_GDB_REG_SIZE	32
#define GDB_SIZEOF_REG		sizeof(u32)

#elif (_MIPS_ISA == _MIPS_ISA_MIPS3) || (_MIPS_ISA == _MIPS_ISA_MIPS4) || \
	(_MIPS_ISA == _MIPS_ISA_MIPS64)

#ifdef CONFIG_32BIT
#define KGDB_GDB_REG_SIZE	32
#define GDB_SIZEOF_REG		sizeof(u32)
#else /* CONFIG_32BIT */
#define KGDB_GDB_REG_SIZE	64
#define GDB_SIZEOF_REG		sizeof(u64)
#endif
#else
#error "Need to set KGDB_GDB_REG_SIZE for MIPS ISA"
#endif /* _MIPS_ISA */

#define BUFMAX			2048
#define DBG_MAX_REG_NUM		72
#define NUMREGBYTES		(DBG_MAX_REG_NUM * sizeof(GDB_SIZEOF_REG))
#define NUMCRITREGBYTES		(12 * sizeof(GDB_SIZEOF_REG))
#define BREAK_INSTR_SIZE	4
#define CACHE_FLUSH_IS_SAFE	0

extern void arch_kgdb_breakpoint(void);
extern void *saved_vectors[32];
extern void handle_exception(struct pt_regs *regs);
extern void breakinst(void);
extern int kgdb_ll_trap(int cmd, const char *str,
			struct pt_regs *regs, long err, int trap, int sig);

#endif				/* __KERNEL__ */

#endif /* __ASM_KGDB_H_ */

Annotation

Implementation Notes