NetBSD/sys/arch/sh5/include/db_machdep.h

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/* $NetBSD: db_machdep.h,v 1.11 2004/02/13 11:36:17 wiz Exp $ */
/*
* 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 _SH5_DB_MACHDEP_H_
#define _SH5_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <sys/param.h>
#include <uvm/uvm_extern.h>
#include <machine/trap.h>
typedef uint64_t db_addr_t; /* address - unsigned */
typedef int64_t db_expr_t; /* expression - signed */
typedef u_int32_t opcode_t;
typedef struct trapframe db_regs_t;
db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#define PC_REGS(r) ((db_addr_t)(r)->tf_state.sf_spc & ~1)
#define PC_ADVANCE(r) ((r)->tf_state.sf_spc += BKPT_SIZE)
#define BKPT_ADDR(addr) ((addr) & ~3) /* ditch the instruction type bits */
#define BKPT_INST 0x6ff5fff0 /* breakpoint instruction (BRK) */
#define BKPT_SIZE 4 /* size of breakpoint inst */
#define BKPT_SET(inst) BKPT_INST
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK)
#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX (msaitoh) */
/* access capability and access macros */
#define DB_ACCESS_LEVEL 2 /* access any space */
#define DB_CHECK_ACCESS(addr, size, task) \
db_check_access(addr, size, task)
#define DB_PHYS_EQ(task1, addr1, task2, addr2) \
db_phys_eq(task1, addr1, task2, addr2)
#define DB_VALID_KERN_ADDR(addr) ((addr) >= SH5_KSEG0_BASE)
#define DB_VALID_ADDRESS(addr, user) \
((!(user) && DB_VALID_KERN_ADDR(addr)) || \
((user) && (addr) < VM_MAX_ADDRESS))
/* macros for printing OS server dependent task name */
#define DB_TASK_NAME(task) db_task_name(task)
#define DB_TASK_NAME_TITLE "COMMAND "
#define DB_TASK_NAME_LEN 23
#define DB_NULL_TASK_NAME "? "
#ifdef notyet
/*
* Constants for KGDB.
*/
typedef long kgdb_reg_t;
#define KGDB_NUMREGS 59
#define KGDB_BUFLEN 1024
#endif
/* macro for checking if a thread has used floating-point */
#define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
extern int kdb_trap(int, void *);
#define I_RTE 0x6ff3fff0 /* rte */
#define I_RET 0x4401fff0 /* blink tr?, r63 */
#define M_RET 0xff8fffff
#define I_CALL 0x4401fd20 /* blink tr?, r18 */
#define M_CALL 0xff8fffff
/*
* SH5 does have hardware single-step (using SR.T), but its use is
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* CPU dependent. (We need to be able to change DBGVEC, which is
* frobbed in a CPU-dependent manner).
*
* Far easier to just use software single-stepping.
*/
#define SOFTWARE_SSTEP
extern boolean_t inst_branch(int);
extern boolean_t inst_load(int);
extern boolean_t inst_store(int);
extern boolean_t inst_unconditional_flow_transfer(int);
extern db_addr_t branch_taken(int, db_addr_t, db_regs_t *);
#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4)))
#define inst_call(ins) (((ins) & M_CALL) == I_CALL)
#define inst_return(ins) (((ins) & M_RET) == I_RET)
#define inst_trap_return(ins) ((ins) == I_RTE)
/*
* We use ELF symbols in DDB.
*
*/
#define DB_ELF_SYMBOLS
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#ifndef _LP64
#define DB_ELFSIZE 32
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#else
#define DB_ELFSIZE 64
#endif
/*
* We have machine-dependent commands.
*/
#define DB_MACHINE_COMMANDS
extern const char kgdb_devname[];
#endif /* _SH5_DB_MACHDEP_H_ */