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/* $OpenBSD: db_machdep.h,v 1.5 2005/04/19 15:23:34 miod Exp $ */
/* $NetBSD: db_machdep.h,v 1.5 2001/11/22 18:00:00 thorpej Exp $ */
/*
* Copyright (c) 1996 Scott K Stevens
*
* Mach Operating System
* Copyright (c) 1991,1990 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#ifndef _ARM_DB_MACHDEP_H_
#define _ARM_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <uvm/uvm_extern.h>
#include <arm/armreg.h>
#include <machine/frame.h>
#include <machine/trap.h>
/* end of mangling */
typedef vaddr_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
typedef trapframe_t db_regs_t;
extern db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#ifdef __PROG26
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_r15 & R15_PC)
#define PC_ADVANCE(regs) ((regs)->tf_r15 += 4)
#else
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_pc)
#define SET_PC_REGS(regs, value) (regs)->tf_pc = (register_t)(value)
#endif
#define BKPT_INST (KERNEL_BREAKPOINT) /* breakpoint instruction */
#define BKPT_SIZE (INSN_SIZE) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
/*#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE)*/
#define T_BREAKPOINT (1)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT)
#define IS_WATCHPOINT_TRAP(type, code) (0)
#define inst_trap_return(ins) (0)
/* ldmxx reg, {..., pc}
01800000 stack mode
000f0000 register
0000ffff register list */
/* mov pc, reg
0000000f register */
#define inst_return(ins) (((ins) & 0x0e108000) == 0x08108000 || \
((ins) & 0x0ff0fff0) == 0x01a0f000)
/* bl ...
00ffffff offset>>2 */
#define inst_call(ins) (((ins) & 0x0f000000) == 0x0b000000)
/* b ...
00ffffff offset>>2 */
/* ldr pc, [pc, reg, lsl #2]
0000000f register */
#define inst_branch(ins) (((ins) & 0x0f000000) == 0x0a000000 || \
((ins) & 0x0fdffff0) == 0x079ff100)
#define inst_load(ins) (0)
#define inst_store(ins) (0)
#define inst_unconditional_flow_transfer(ins) \
((((ins) & INSN_COND_MASK) == INSN_COND_AL) && \
(inst_branch(ins) || inst_call(ins) || inst_return(ins)))
#define getreg_val (0)
#define next_instr_address(pc, bd) ((bd) ? (pc) : ((pc) + INSN_SIZE))
#define DB_MACHINE_COMMANDS
#define SOFTWARE_SSTEP
db_addr_t db_branch_taken(u_int inst, db_addr_t pc, db_regs_t *regs);
int kdb_trap (int, db_regs_t *);
void db_machine_init (void);
#define branch_taken(ins, pc, fun, regs) \
db_branch_taken((ins), (pc), (regs))
#define DB_ELF_SYMBOLS
#define DB_ELFSIZE 32
void db_show_frame_cmd (db_expr_t, int, db_expr_t, char *);
#endif /* _ARM_DB_MACHDEP_H_ */
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