mirror of
https://github.com/freebsd/freebsd-src.git
synced 2024-11-30 04:22:44 +00:00
77 lines
2.5 KiB
C
77 lines
2.5 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* $Id: db_machdep.h,v 1.8 1995/05/30 08:00:34 rgrimes Exp $
|
|
*/
|
|
|
|
#ifndef _MACHINE_DB_MACHDEP_H_
|
|
#define _MACHINE_DB_MACHDEP_H_
|
|
|
|
#include <machine/frame.h>
|
|
#include <machine/psl.h>
|
|
|
|
#define i386_saved_state trapframe
|
|
|
|
typedef vm_offset_t db_addr_t; /* address - unsigned */
|
|
typedef int db_expr_t; /* expression - signed */
|
|
|
|
typedef struct i386_saved_state db_regs_t;
|
|
extern db_regs_t ddb_regs; /* register state */
|
|
#define DDB_REGS (&ddb_regs)
|
|
|
|
#define PC_REGS(regs) (((regs)->tf_cs & 0xfffc) == 0x08 \
|
|
? (db_addr_t)(regs)->tf_eip : 0)
|
|
|
|
#define BKPT_INST 0xcc /* breakpoint instruction */
|
|
#define BKPT_SIZE (1) /* size of breakpoint inst */
|
|
#define BKPT_SET(inst) (BKPT_INST)
|
|
|
|
#define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1;
|
|
|
|
#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)
|
|
/*
|
|
* Watchpoints are not supported. The debug exception type is in %dr6
|
|
* and not yet in the args to this macro.
|
|
*/
|
|
#define IS_WATCHPOINT_TRAP(type, code) 0
|
|
|
|
#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 inst_load(ins) 0
|
|
#define inst_store(ins) 0
|
|
|
|
#endif /* !_MACHINE_DB_MACHDEP_H_ */
|