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/* $OpenBSD: db_machdep.h,v 1.8 2005/04/19 15:23:37 miod Exp $ */
/*
* Copyright (c) 1998-2003 Opsycon AB (www.opsycon.se)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#ifndef _MIPS_DB_MACHDEP_H_
#define _MIPS_DB_MACHDEP_H_
#include <machine/frame.h>
#include <machine/trap.h>
#include <uvm/uvm_param.h>
#define DB_MACHINE_COMMANDS /* We have machine specific commands */
#define DB_ELF_SYMBOLS /* Elf style symbol table support */
typedef struct trap_frame db_regs_t;
extern db_regs_t ddb_regs;
typedef long db_expr_t;
typedef vaddr_t db_addr_t;
#define SOFTWARE_SSTEP /* Need software single step */
#define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */
db_addr_t next_instr_address(db_addr_t, boolean_t);
#define BKPT_SIZE (4)
#define BKPT_SET(ins) (BREAK_DDB)
#define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */
#define PC_REGS(regs) ((db_addr_t)(regs)->pc)
#define SET_PC_REGS(regs, value) (regs)->pc = (register_t)(value)
#define DDB_REGS (&ddb_regs)
/*
* Test of instructions to see class.
*/
#define IT_CALL 0x01
#define IT_BRANCH 0x02
#define IT_LOAD 0x03
#define IT_STORE 0x04
#define inst_branch(i) (db_inst_type(i) == IT_BRANCH)
#define inst_trap_return(i) ((i) & 0)
#define inst_call(i) (db_inst_type(i) == IT_CALL)
#define inst_return(i) ((i) == 0x03e00008)
#define inst_load(i) (db_inst_type(i) == IT_LOAD)
#define inst_store(i) (db_inst_type(i) == IT_STORE)
int db_inst_type(int);
void db_machine_init(void);
#endif /* !_MIPS_DB_MACHDEP_H_ */
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