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/* $OpenBSD: db_machdep.h,v 1.24 2016/02/27 13:08:06 mpi Exp $ */
/*
* Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
*
* 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 ``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 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.
*/
#ifndef _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
/* XXX - Need to include vm.h for boolean_t */
#include <uvm/uvm_extern.h>
struct opcode {
enum opc_fmt { OPC_PAL, OPC_RES, OPC_MEM, OPC_OP, OPC_BR } opc_fmt;
char *opc_name;
int opc_print;
};
extern struct opcode opcode[];
/* types the generic ddb module needs */
typedef vaddr_t db_addr_t;
typedef long db_expr_t;
typedef struct trapframe db_regs_t;
extern db_regs_t ddb_regs;
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_regs[FRAME_PC])
#define SET_PC_REGS(regs, value) (regs)->tf_regs[FRAME_PC] = (unsigned long)(value)
/* Breakpoint related definitions */
#define BKPT_INST 0x00000080 /* call_pal bpt */
#define BKPT_SIZE sizeof(int)
#define BKPT_SET(inst) BKPT_INST
#define IS_BREAKPOINT_TRAP(type, code) \
((type) == ALPHA_KENTRY_IF && (code) == ALPHA_IF_CODE_BPT)
#ifdef notyet
#define IS_WATCHPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_MM)
#else
#define IS_WATCHPOINT_TRAP(type, code) 0
#endif
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_regs[FRAME_PC] -= sizeof(int))
#define SOFTWARE_SSTEP
#define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr)
/* Hack to skip GCC "unused" warnings. */
#define inst_trap_return(ins) ((ins) & 0) /* XXX */
#define inst_return(ins) (((ins) & 0xfc000000) == 0x68000000)
int alpha_debug(unsigned long, unsigned long, unsigned long,
unsigned long, struct trapframe *);
db_addr_t db_branch_taken(int, db_addr_t, db_regs_t *);
boolean_t db_inst_branch(int);
boolean_t db_inst_call(int);
boolean_t db_inst_load(int);
boolean_t db_inst_return(int);
boolean_t db_inst_trap_return(int);
boolean_t db_inst_unconditional_flow_transfer(int);
u_long db_register_value(db_regs_t *, int);
int db_valid_breakpoint(db_addr_t);
int ddb_trap(unsigned long, unsigned long, unsigned long,
unsigned long, struct trapframe *);
int db_ktrap(int, int, db_regs_t *);
db_addr_t next_instr_address(db_addr_t, int);
#if 1
/* Backwards compatibility until we switch all archs to use the db_ prefix */
#define branch_taken(ins, pc, fun, regs) db_branch_taken((ins), (pc), (regs))
#define inst_branch db_inst_branch
#define inst_call db_inst_call
#endif
#define DB_MACHINE_COMMANDS
#endif /* _MACHINE_DB_MACHDEP_H_ */
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