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/* $OpenBSD: db_machdep.h,v 1.29 2019/11/07 14:44:53 mpi Exp $ */
/* $NetBSD: db_machdep.h,v 1.9 1996/05/03 19:23:59 christos Exp $ */
/*
* 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/trap.h>
typedef vaddr_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
typedef struct trapframe db_regs_t;
extern db_regs_t ddb_regs; /* register state */
#define PC_REGS(regs) ((vaddr_t)(regs)->tf_eip)
#define SET_PC_REGS(regs, value) (regs)->tf_eip = (int)(value)
#define BKPT_INST 0xcc /* breakpoint instruction */
#define BKPT_SIZE (1) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define SSF_INST 0x55
#define SSF_SIZE (1)
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_eip -= BKPT_SIZE)
#define db_clear_single_step(regs) ((regs)->tf_eflags &= ~PSL_T)
#define db_set_single_step(regs) ((regs)->tf_eflags |= PSL_T)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP && (code) & 15)
#define I_CALL 0xe8
#define I_CALLI 0xff
#define I_RET 0xc3
#define I_IRET 0xcf
#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
#define inst_return(ins) (((ins)&0xff) == I_RET)
#define inst_call(ins) (((ins)&0xff) == I_CALL || \
(((ins)&0xff) == I_CALLI && \
((ins)&0x3800) == 0x1000))
#define DB_MACHINE_COMMANDS
/* macro for checking if a thread has used floating-point */
int db_ktrap(int, int, db_regs_t *);
void db_machine_init(void);
int db_enter_ddb(void);
void db_startcpu(int);
void db_stopcpu(int);
void i386_ipi_db(struct cpu_info *);
extern struct db_mutex ddb_mp_mutex;
/* For ddb_state */
#define DDB_STATE_NOT_RUNNING 0
#define DDB_STATE_RUNNING 1
#define DDB_STATE_EXITING 2
#endif /* _MACHINE_DB_MACHDEP_H_ */
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