/* $OpenBSD: db_machdep.h,v 1.30 2021/08/30 08:11:12 jasper 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 #include #include 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_ */