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/* $OpenBSD: db_machdep.h,v 1.5 1997/07/06 16:20:23 niklas Exp $ */
/* $NetBSD: db_machdep.h,v 1.2 1996/07/11 05:31:31 cgd Exp $ */
/*
* Copyright (c) 1995 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* 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 the
* rights to redistribute these changes.
*/
#ifndef _ALPHA_DB_MACHDEP_H_
#define _ALPHA_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <sys/param.h>
#include <vm/vm.h>
#include <machine/frame.h>
typedef vm_offset_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_regs[FRAME_PC])
#define BKPT_INST 0x00000080 /* breakpoint instruction */
#define BKPT_SIZE (4) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE)
#define IS_BREAKPOINT_TRAP(type, code) 0
#define IS_WATCHPOINT_TRAP(type, code) 0
#define SOFTWARE_SSTEP
/* Hack to skip GCC "unused" warnings. */
#ifdef __GNUC__
#define inst_trap_return(ins) ({(ins); 0;})
#define inst_return(ins) ({(ins); 0;})
#define inst_call(ins) ({(ins); 0;})
#define inst_branch(ins) ({(ins); 0;})
#define inst_load(ins) ({(ins); 0;})
#define inst_store(ins) ({(ins); 0;})
#else
#define inst_trap_return(ins) 0
#define inst_return(ins) 0
#define inst_call(ins) 0
#define inst_branch(ins) 0
#define inst_load(ins) 0
#define inst_store(ins) 0
#endif
#define next_instr_address(pc, bd) (pc + 4)
/* XXX temporary hack until we implement singlestepping */
#define branch_taken(a, b, c, d) 0
int kdb_trap __P((int, int, db_regs_t *));
#endif /* _ALPHA_DB_MACHDEP_H_ */
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