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/* $OpenBSD: db_machdep.h,v 1.2 2006/10/06 21:16:57 mickey Exp $ */
/* $NetBSD: db_machdep.h,v 1.12 2006/05/10 06:24:03 skrll 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 _SH_DB_MACHDEP_H_
#define _SH_DB_MACHDEP_H_
/*
* Machine-dependent defines for the kernel debugger.
*/
#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <sh/trap.h>
typedef vaddr_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
typedef struct trapframe db_regs_t;
extern db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_spc)
#define PC_ADVANCE(regs) ((regs)->tf_spc += BKPT_SIZE)
#define BKPT_INST 0xc3c3 /* breakpoint instruction */
#define BKPT_SIZE 2 /* size of breakpoint inst */
#define BKPT_SET(inst) BKPT_INST
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_spc -= BKPT_SIZE)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == EXPEVT_BREAK)
#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX (msaitoh) */
#define inst_load(ins) 0
#define inst_store(ins) 0
/* 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);
boolean_t inst_call(int);
boolean_t inst_return(int);
boolean_t inst_trap_return(int);
/*
* We use ELF symbols in DDB.
*
*/
#define DB_ELF_SYMBOLS
#define DB_ELFSIZE 32
/*
* We have machine-dependent commands.
*/
#define DB_MACHINE_COMMANDS
#endif /* !_SH_DB_MACHDEP_H_ */
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