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/* $OpenBSD: db_machdep.h,v 1.4 2021/07/11 12:21:52 jasper Exp $ */
/*
* Copyright (c) 2019 Brian Bamsch <bbamsch@google.com>
* Copyright (c) 2015-2016 Ruslan Bukin <br@bsdpad.com>
* All rights reserved.
*
* Portions of this software were developed by SRI International and the
* University of Cambridge Computer Laboratory under DARPA/AFRL contract
* FA8750-10-C-0237 ("CTSRD"), as part of the DARPA CRASH research programme.
*
* Portions of this software were developed by the University of Cambridge
* Computer Laboratory as part of the CTSRD Project, with support from the
* UK Higher Education Innovation Fund (HEIF).
*
* 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
*
* $FreeBSD$
*/
#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <machine/riscvreg.h>
#include <machine/frame.h>
#include <machine/trap.h>
#define T_BREAKPOINT (EXCP_BREAKPOINT)
#define T_WATCHPOINT (0)
typedef vaddr_t db_addr_t;
typedef long db_expr_t;
typedef trapframe_t db_regs_t;
extern db_regs_t ddb_regs;
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((vaddr_t)(regs)->tf_ra)
#define SET_PC_REGS(regs, value) (regs)->tf_ra = (register_t)(value)
#define BKPT_INST (KERNEL_BREAKPOINT)
#define BKPT_SIZE (INSN_SIZE)
#define BKPT_SET(inst) (BKPT_INST)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT)
#define inst_trap_return(ins) (ins == 0x10000073) /* eret */
#define inst_return(ins) (ins == 0x00008067) /* ret */
#define inst_call(ins) (((ins) & 0x7f) == 0x6f || \
((ins) & 0x7f) == 0x67) /* jal, jalr */
#define inst_branch(ins) (((ins) & 0x7f) == 0x63) /* branch */
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
#define DB_MACHINE_COMMANDS
#define SOFTWARE_SSTEP
int db_trapper(vaddr_t, u_int, trapframe_t *, int);
void db_machine_init (void);
vaddr_t db_branch_taken(u_int inst, vaddr_t pc, db_regs_t *regs);
#define branch_taken(ins, pc, fun, regs) \
db_branch_taken((ins), (pc), (regs))
/* For ddb_state */
#define DDB_STATE_NOT_RUNNING 0
#define DDB_STATE_RUNNING 1
#define DDB_STATE_EXITING 2
#endif /* !_MACHINE_DB_MACHDEP_H_ */
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