/*      $OpenBSD: db_machdep.h,v 1.8 2025/07/22 09:20:41 kettenis Exp $ */
/*      $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $   */

/*
 * Copyright (c) 1996 Scott K Stevens
 *
 * Mach Operating System
 * Copyright (c) 1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_

/*
 * Machine-dependent defines for new kernel debugger.
 */

#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <machine/armreg.h>
#include <machine/frame.h>

/* end of mangling */

typedef long            db_expr_t;      /* expression - signed */

typedef trapframe_t db_regs_t;

extern db_regs_t                ddb_regs;       /* register state */
#define DDB_REGS        (&ddb_regs)

#define PC_REGS(regs)   ((vaddr_t)(regs)->tf_elr)
#define SET_PC_REGS(regs, value)        (regs)->tf_elr = (register_t)(value)

#define BKPT_INST       0xd4200000              /* breakpoint instruction */
#define BKPT_SIZE       (INSN_SIZE)             /* size of breakpoint inst */
#define BKPT_SET(inst)  (BKPT_INST)

#define db_clear_single_step(regs)      ((regs)->tf_spsr &= ~PSR_SS)
#define db_set_single_step(regs)        ((regs)->tf_spsr |= PSR_SS)

#define IS_BREAKPOINT_TRAP(type, code)  ((type) == EXCP_BRK)
#define IS_WATCHPOINT_TRAP(type, code)  ((type) == EXCP_WATCHPT_EL1)

// ALL BROKEN!!!
#define inst_trap_return(ins)   ((ins) == 0 && (ins) == 1)
#define inst_return(ins)        ((ins) == 0 && (ins) == 1)
#define inst_call(ins)          ((ins) == 0 && (ins) == 1)

#define DB_MACHINE_COMMANDS

int db_ktrap(int, db_regs_t *);
void db_machine_init (void);

#define DDB_STATE_NOT_RUNNING   0  
#define DDB_STATE_RUNNING       1
#define DDB_STATE_EXITING       2

#endif  /* _MACHINE_DB_MACHDEP_H_ */