94 lines
2.8 KiB
C
94 lines
2.8 KiB
C
/* $OpenBSD: db_machdep.h,v 1.30 2021/08/30 08:11:12 jasper Exp $ */
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/* $NetBSD: db_machdep.h,v 1.9 1996/05/03 19:23:59 christos Exp $ */
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/*
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* Mach Operating System
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* Copyright (c) 1991,1990 Carnegie Mellon University
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* All Rights Reserved.
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*
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* Permission to use, copy, modify and distribute this software and its
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* documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
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* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie Mellon
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* the rights to redistribute these changes.
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*/
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#ifndef _MACHINE_DB_MACHDEP_H_
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#define _MACHINE_DB_MACHDEP_H_
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/*
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* Machine-dependent defines for new kernel debugger.
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*/
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#include <sys/param.h>
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#include <uvm/uvm_extern.h>
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#include <machine/trap.h>
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typedef long db_expr_t; /* expression - signed */
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs; /* register state */
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#define PC_REGS(regs) ((vaddr_t)(regs)->tf_eip)
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#define SET_PC_REGS(regs, value) (regs)->tf_eip = (int)(value)
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#define BKPT_INST 0xcc /* breakpoint instruction */
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#define BKPT_SIZE (1) /* size of breakpoint inst */
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#define BKPT_SET(inst) (BKPT_INST)
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#define SSF_INST 0x55
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#define SSF_SIZE (1)
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#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_eip -= BKPT_SIZE)
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#define db_clear_single_step(regs) ((regs)->tf_eflags &= ~PSL_T)
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#define db_set_single_step(regs) ((regs)->tf_eflags |= PSL_T)
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT)
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#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP && (code) & 15)
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#define I_CALL 0xe8
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#define I_CALLI 0xff
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#define I_RET 0xc3
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#define I_IRET 0xcf
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#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
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#define inst_return(ins) (((ins)&0xff) == I_RET)
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#define inst_call(ins) (((ins)&0xff) == I_CALL || \
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(((ins)&0xff) == I_CALLI && \
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((ins)&0x3800) == 0x1000))
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#define DB_MACHINE_COMMANDS
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/* macro for checking if a thread has used floating-point */
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int db_ktrap(int, int, db_regs_t *);
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void db_machine_init(void);
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int db_enter_ddb(void);
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void db_startcpu(int);
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void db_stopcpu(int);
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void i386_ipi_db(struct cpu_info *);
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extern struct db_mutex ddb_mp_mutex;
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/* For ddb_state */
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#define DDB_STATE_NOT_RUNNING 0
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#define DDB_STATE_RUNNING 1
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#define DDB_STATE_EXITING 2
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#endif /* _MACHINE_DB_MACHDEP_H_ */
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