93 lines
3.4 KiB
C
93 lines
3.4 KiB
C
/* $OpenBSD: db_machdep.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-4-Clause
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*
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* Copyright (c) 1998 Per Fogelstrom, Opsycon AB
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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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed under OpenBSD by
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* Per Fogelstrom, Opsycon AB, Sweden.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* JNPR: db_machdep.h,v 1.7 2006/10/16 12:30:34 katta
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* $FreeBSD$
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*/
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#ifndef _MIPS_DB_MACHDEP_H_
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#define _MIPS_DB_MACHDEP_H_
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#include <machine/frame.h>
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#include <machine/trap.h>
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typedef struct trapframe db_regs_t;
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extern db_regs_t ddb_regs; /* register state */
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typedef vm_offset_t db_addr_t; /* address - unsigned */
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typedef register_t db_expr_t; /* expression - signed */
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#define SOFTWARE_SSTEP /* Need software single step */
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#define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */
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db_addr_t next_instr_address(db_addr_t, boolean_t);
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#define BKPT_SIZE (4)
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#define BKPT_SET(ins) (MIPS_BREAK_DDB)
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#define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0)
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#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
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#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */
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#define PC_REGS() ((db_addr_t)kdb_thrctx->pcb_regs.pc)
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#define BKPT_SKIP \
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do { \
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if((db_get_value(kdb_frame->pc, sizeof(int), FALSE) & \
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~MIPS_BREAK_VAL_MASK) == MIPS_BREAK_INSTR) { \
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kdb_frame->pc += BKPT_SIZE; \
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kdb_thrctx->pcb_regs.pc += BKPT_SIZE; \
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} \
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} while (0);
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/*
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* Test of instructions to see class.
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*/
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#define IT_CALL 0x01
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#define IT_BRANCH 0x02
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#define IT_LOAD 0x03
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#define IT_STORE 0x04
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#define inst_branch(i) (db_inst_type(i) == IT_BRANCH)
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#define inst_trap_return(i) ((i) & 0)
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#define inst_call(i) (db_inst_type(i) == IT_CALL)
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#define inst_return(i) ((i) == 0x03e00008)
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#define inst_load(i) (db_inst_type(i) == IT_LOAD)
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#define inst_store(i) (db_inst_type(i) == IT_STORE)
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int db_inst_type(int);
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db_addr_t branch_taken(int inst, db_addr_t pc);
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int32_t kdbpeek(int *);
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int64_t kdbpeekd(int *);
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#endif /* !_MIPS_DB_MACHDEP_H_ */
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