1/* $NetBSD: db_machdep.h,v 1.18 2011/05/26 15:34:14 joerg Exp $ */ 2 3/* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 */ 28 29#ifndef _VAX_DB_MACHDEP_H_ 30#define _VAX_DB_MACHDEP_H_ 31 32/* 33 * Machine-dependent defines for new kernel debugger. 34 * Modified for vax out of i386 code. 35 */ 36 37#include <sys/param.h> 38#include <uvm/uvm.h> 39#include <machine/trap.h> 40#include <machine/psl.h> 41 42typedef vaddr_t db_addr_t; /* address - unsigned */ 43#define DDB_EXPR_FMT "l" /* expression is long */ 44typedef long db_expr_t; /* expression - signed */ 45 46typedef struct trapframe db_regs_t; 47extern db_regs_t ddb_regs; /* register state */ 48#define DDB_REGS (&ddb_regs) 49 50#define PC_REGS(regs) (*(db_addr_t *)&(regs)->tf_pc) 51 52#define BKPT_ADDR(addr) (addr) /* breakpoint address */ 53#define BKPT_INST 0x03 /* breakpoint instruction */ 54#define BKPT_SIZE (1) /* size of breakpoint inst */ 55#define BKPT_SET(inst, addr) (BKPT_INST) 56 57#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE) 58 59#define db_clear_single_step(regs) ((regs)->tf_psl &= ~PSL_T) 60#define db_set_single_step(regs) ((regs)->tf_psl |= PSL_T) 61 62#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) 63#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP) 64 65#define I_CALL 0xfb 66#define I_RET 0x04 67#define I_IRET 0x02 68 69#define inst_trap_return(ins) (((ins)&0xff) == I_IRET) 70#define inst_return(ins) (((ins)&0xff) == I_RET) 71#define inst_call(ins) (((ins)&0xff) == I_CALL) 72 73#define inst_load(ins) 0 74#define inst_store(ins) 0 75 76#define DB_MACHINE_COMMANDS 77 78/* Prototypes */ 79void kdb_trap(struct trapframe *); 80 81/* 82 * We use a.out symbols in DDB (unless we are ELF then we use ELF symbols). 83 */ 84#define DB_ELF_SYMBOLS 85#define DB_ELFSIZE 32 86 87#endif /* _VAX_DB_MACHDEP_H_ */ 88