freebsd-dev/sys/alpha/include/db_machdep.h

101 lines
3.0 KiB
C

/* $FreeBSD$ */
/* $NetBSD: db_machdep.h,v 1.6 1997/09/06 02:02:25 thorpej 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_
#include <sys/param.h>
#include <vm/vm.h>
#include <machine/frame.h>
#define DB_NO_AOUT
typedef vm_offset_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_context[7])
#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 (kdb_frame->tf_regs[FRAME_PC] -= BKPT_SIZE);
#define SOFTWARE_SSTEP 1 /* no hardware support */
#define IS_BREAKPOINT_TRAP(type, code) \
((type) == ALPHA_KENTRY_IF && (code) == ALPHA_IF_CODE_BPT)
#define IS_WATCHPOINT_TRAP(type, code) 0
/*
* Functions needed for software single-stepping.
*/
boolean_t db_inst_trap_return(int inst);
boolean_t db_inst_return(int inst);
boolean_t db_inst_call(int inst);
boolean_t db_inst_branch(int inst);
boolean_t db_inst_load(int inst);
boolean_t db_inst_store(int inst);
boolean_t db_inst_unconditional_flow_transfer(int inst);
db_addr_t db_branch_taken(int inst, db_addr_t pc);
#define inst_trap_return(ins) db_inst_trap_return(ins)
#define inst_return(ins) db_inst_return(ins)
#define inst_call(ins) db_inst_call(ins)
#define inst_branch(ins) db_inst_branch(ins)
#define inst_load(ins) db_inst_load(ins)
#define inst_store(ins) db_inst_store(ins)
#define inst_unconditional_flow_transfer(ins) \
db_inst_unconditional_flow_transfer(ins)
#define branch_taken(ins, pc) db_branch_taken(ins, pc)
/* No delay slots on Alpha. */
#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
u_long db_register_value(int);
/*
* Pretty arbitrary
*/
#define DB_SMALL_VALUE_MAX 0x7fffffff
#define DB_SMALL_VALUE_MIN (-0x400001)
/*
* We define some of our own commands.
*/
#define DB_MACHINE_COMMANDS
/*
* We use Elf64 symbols in DDB.
*/
#define DB_ELFSIZE 64
#endif /* _ALPHA_DB_MACHDEP_H_ */