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/*
* 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 _I386_DB_MACHDEP_H_
#define _I386_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <mach/machine/vm_types.h>
#include <mach/machine/vm_param.h>
#include <mach/machine/eflags.h>
#include <i386/thread.h> /* for thread_status */
#include <i386/trap.h>
typedef vm_offset_t db_addr_t; /* address - unsigned */
typedef long 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 SAVE_DDB_REGS DB_SAVE(db_regs_t, ddb_regs)
#define RESTORE_DDB_REGS DB_RESTORE(ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->eip)
#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.eip -= 1;
#define db_clear_single_step(regs) ((regs)->efl &= ~EFL_TF)
#define db_set_single_step(regs) ((regs)->efl |= EFL_TF)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3)
#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
#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
/* access capability and access macros */
#define DB_ACCESS_LEVEL 2 /* access any space */
#define DB_CHECK_ACCESS(addr,size,task) \
db_check_access(addr,size,task)
#define DB_PHYS_EQ(task1,addr1,task2,addr2) \
db_phys_eq(task1,addr1,task2,addr2)
#define DB_VALID_KERN_ADDR(addr) \
((addr) >= VM_MIN_KERNEL_ADDRESS && \
(addr) < VM_MAX_KERNEL_ADDRESS)
#define DB_VALID_ADDRESS(addr,user) \
((!(user) && DB_VALID_KERN_ADDR(addr)) || \
((user) && (addr) < VM_MIN_KERNEL_ADDRESS))
/* macros for printing OS server dependent task name */
#define DB_TASK_NAME(task) db_task_name(task)
#define DB_TASK_NAME_TITLE "COMMAND "
#define DB_TASK_NAME_LEN 23
#define DB_NULL_TASK_NAME "? "
/* macro for checking if a thread has used floating-point */
#define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
/* only a.out symbol tables */
#define DB_NO_COFF 1
#endif /* _I386_DB_MACHDEP_H_ */
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