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99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
/* $NetBSD: db_machdep.h,v 1.1 2014/09/03 19:34:26 matt Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Matt Thomas of 3am Software Foundry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _OR1K_DB_MACHDEP_H_
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#define _OR1K_DB_MACHDEP_H_
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#include <or1k/frame.h>
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typedef long int db_expr_t;
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#define DDB_EXPR_FMT "lx"
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typedef uintptr_t db_addr_t;
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#define DDB_ADDR_FMT PRIxPTR
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#define BKPT_ADDR(addr) (addr)
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#define BKPT_SIZE 4
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#define BKPT_INSN 0x21000000
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#define BKPT_SET(insn, addr) (BKPT_INSN)
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs;
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#define DDB_REGS (&ddb_regs)
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#define PC_REGS(tf) ((tf)->tf_pc)
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#define DB_TRAP_UNKNOWN 0
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#define DB_TRAP_BREAKPOINT 1
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#define DB_TRAP_BKPT_INSN 2
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#define DB_TRAP_WATCHPOINT 3
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#define IS_BREAKPOINT_TRAP(type, code) \
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((type) == DB_TRAP_BREAKPOINT || (type) == DB_TRAP_BKPT_INSN)
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#define IS_WATCHPOINT_TRAP(type, code) \
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((type) == DB_TRAP_WATCHPOINT)
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static inline bool
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inst_call(db_expr_t insn)
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{
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return (insn & 0xfc000000) == 0x04000000 /* l.jal */
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|| (insn & 0xffff07ff) == 0x48000000; /* l.jalr */
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}
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static inline bool
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inst_load(db_expr_t insn)
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{
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const unsigned int opcode = isns >> 26;
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/* l.lwa (0x1b), l.ld (0x20) l.lwz (0x21), l.lws (0x22), */
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/* l.lbz (0x23), l.lbs (0x24), l.lhz (0x25), l.lhs (0x26) */
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return opcode == 0x1b || (opcode >= 0x20 && opcode <= 0x26);
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}
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static inline bool
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inst_return(db_expr_t insn)
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{
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return insn == 0x44004800; /* l.jr r9 */
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}
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static inline bool
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inst_store(db_expr_t insn)
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{
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const unsigned int opcode = isns >> 26;
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/* l.swa (0x33), l.sd (0x33), l.sw (0x35), l.sb (0x36), l.sh (0x37) */
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return opcode >= 0x33 && opcode <= 0x37;
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}
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static inline bool
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inst_trap_return(db_expr_t insn)
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{
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return insn == 0x24000000; /* l.rfe */
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}
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#endif /* _OR1K_DB_MACHDEP_H_ */
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