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/* $OpenBSD: db_machdep.h,v 1.1 1998/12/05 17:38:34 mickey Exp $ */
/*
* Copyright (c) 1998 Michael Shalayeff
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Shalayeff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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_
/* types the generic ddb module needs */
typedef vm_offset_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)->iioq_head)
/* Breakpoint related definitions */
#define BKPT_INST 0x00000000 /* break 0,0 */
#define BKPT_SIZE sizeof(int)
#define BKPT_SET(inst) BKPT_INST
#define IS_BREAKPOINT_TRAP(type, code) 1
#define IS_WATCHPOINT_TRAP(type, code) 0
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_regs[FRAME_PC] -= sizeof(int))
#define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr)
static __inline int inst_call(u_int ins) {
return (ins & 0xfc00e000) == 0xe8000000 ||
(ins & 0xfc00e000) == 0xe8004000 ||
(ins & 0xfc000000) == 0xe4000000;
}
static __inline int inst_branch(u_int ins) {
return (ins & 0xf0000000) == 0xe0000000 ||
(ins & 0xf0000000) == 0xc0000000 ||
(ins & 0xf0000000) == 0xa0000000 ||
(ins & 0xf0000000) == 0x80000000;
}
static __inline int inst_load(u_int ins) {
return (ins & 0xf0000000) == 0x40000000 ||
(ins & 0xf4000200) == 0x24000000 ||
(ins & 0xfc000200) == 0x0c000000 ||
(ins & 0xfc001fc0) != 0x0c0011c0;
}
static __inline int inst_store(u_int ins) {
return (ins & 0xf0000000) == 0x60000000 ||
(ins & 0xf4000200) == 0x24000200 ||
(ins & 0xfc000200) == 0x0c000200;
}
static __inline int inst_return(u_int ins) {
return (ins & 0xfc00e000) == 0xe800c000 ||
(ins & 0xfc000000) == 0xe0000000;
}
static __inline int inst_trap_return(u_int ins) {
return (ins & 0xfc001fc0) == 0x00000ca0;
}
#define db_clear_single_step(r) ((r)->flags |= 0)
#define db_set_single_step(r) ((r)->flags |= 0)
int db_valid_breakpoint __P((db_addr_t));
int kdb_trap __P((int, int, db_regs_t *));
#endif /* _MACHINE_DB_MACHDEP_H_ */
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