/* $OpenBSD: db_machdep.h,v 1.13 2004/07/20 20:18:53 art 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 _I386_DB_MACHDEP_H_ #define _I386_DB_MACHDEP_H_ /* * Machine-dependent defines for new kernel debugger. */ #include #include #include typedef vaddr_t db_addr_t; /* address - unsigned */ typedef long db_expr_t; /* expression - signed */ typedef struct trapframe db_regs_t; db_regs_t ddb_regs; /* register state */ #define DDB_REGS (&ddb_regs) #define PC_REGS(regs) ((db_addr_t)(regs)->tf_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(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 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_MAX_ADDRESS)) #if 0 boolean_t db_check_access(vaddr_t, int, task_t); boolean_t db_phys_eq(task_t, vaddr_t, task_t, vaddr_t); #endif #define DB_MACHINE_COMMANDS /* 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 "? " #define DB_ELF_SYMBOLS #define DB_ELFSIZE 32 /* * Constants for KGDB. */ typedef long kgdb_reg_t; #define KGDB_NUMREGS 16 #define KGDB_BUFLEN 512 #if 0 void db_task_name(/* task_t */); #endif /* macro for checking if a thread has used floating-point */ #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0) int kdb_trap(int, int, db_regs_t *); void db_machine_init(void); int db_enter_ddb(void); void db_startcpu(int cpu); void db_stopcpu(int cpu); void i386_ipi_db(struct cpu_info *); extern struct mutex ddb_mp_mutex; /* For ddb_state */ #define DDB_STATE_NOT_RUNNING 0 #define DDB_STATE_RUNNING 1 #define DDB_STATE_EXITING 2 #endif /* _I386_DB_MACHDEP_H_ */