#ifndef _I386_DB_MACHDEP_H_
#define _I386_DB_MACHDEP_H_
#include <kern/kern_types.h>
#include <mach/i386/vm_types.h>
#include <mach/i386/vm_param.h>
#include <i386/thread.h>
#include <i386/eflags.h>
#include <i386/trap.h>
typedef vm_offset_t db_addr_t;
typedef int db_expr_t;
typedef struct i386_saved_state db_regs_t;
db_regs_t ddb_regs;
#define DDB_REGS (&ddb_regs)
extern int db_active;
#define PC_REGS(regs) ((db_addr_t)(regs)->eip)
#define BKPT_INST 0xcc
#define BKPT_SIZE (1)
#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))
int db_inst_load(unsigned long);
int db_inst_store(unsigned long);
#define DB_ACCESS_LEVEL 2
#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_MAX_ADDRESS))
#define IS_USER_TRAP(regs, etext) ((((regs)->cs & 3) != 0) || \
(current_act() && \
current_act()->kernel_loaded && \
((char *)(regs)->eip > (etext))))
extern boolean_t db_check_access(
vm_offset_t addr,
int size,
task_t task);
extern boolean_t db_phys_eq(
task_t task1,
vm_offset_t addr1,
task_t task2,
vm_offset_t addr2);
extern db_addr_t db_disasm(
db_addr_t loc,
boolean_t altfmt,
task_t task);
extern void db_read_bytes(
vm_offset_t addr,
int size,
char *data,
task_t task);
extern void db_write_bytes(
vm_offset_t addr,
int size,
char *data,
task_t task);
extern void db_stack_trace_cmd(
db_expr_t addr,
boolean_t have_addr,
db_expr_t count,
char *modif);
extern void db_reboot(
db_expr_t addr,
boolean_t have_addr,
db_expr_t count,
char *modif);
#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 "? "
extern void db_task_name(
task_t task);
#define db_act_fp_used(act) (act && act->mact.pcb->ims.ifps)
extern void db_tss_to_frame(
int tss_sel,
struct i386_saved_state *regs);
extern int kdb_trap(
int type,
int code,
struct i386_saved_state *regs);
extern boolean_t db_trap_from_asm(
struct i386_saved_state *regs);
extern int dr6(void);
extern void kdb_on(
int cpu);
extern void cnpollc(
boolean_t on);
#endif