NetBSD/sys/arch/sh3/include/db_machdep.h

137 lines
3.9 KiB
C

/* $NetBSD: db_machdep.h,v 1.1 1999/09/13 10:31:17 itojun 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 _SH3_DB_MACHDEP_H_
#define _SH3_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <sys/param.h>
#include <vm/vm.h>
#include <machine/trap.h>
typedef vm_offset_t db_addr_t; /* address - unsigned */
#if 1
typedef long db_expr_t; /* expression - signed */
#else
typedef short db_expr_t; /* expression - signed */
#endif
typedef struct trapframe db_regs_t;
db_regs_t ddb_regs; /* register state */
#define DDB_REGS (&ddb_regs)
#define PC_REGS(regs) ((db_addr_t)(regs)->tf_spc)
#define BKPT_INST 0xc3c3 /* breakpoint instruction */
#define BKPT_SIZE (2) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_spc -= BKPT_SIZE)
#define IS_BREAKPOINT_TRAP(type, code) ((type) == T_USERBREAK)
#define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX (msaitoh) */
#define I_CALL 0xe8
#define I_CALLI 0xff
#define I_RET 0xc3
#define I_IRET 0xcf
#define inst_trap_return(ins) (((ins)&0xff) == I_IRET)
#define inst_return(ins) (((ins)&0xff) == I_RET)
#define inst_call(ins) (((ins)&0xff) == I_CALL || \
(((ins)&0xff) == I_CALLI && \
((ins)&0x3800) == 0x1000))
#define inst_load(ins) 0
#define inst_store(ins) 0
/* 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) >= VM_MIN_KERNEL_ADDRESS && \
(addr) < VM_MAX_KERNEL_ADDRESS)
#define DB_VALID_ADDRESS(addr, user) \
((!(user) && DB_VALID_KERN_ADDR(addr)) || \
((user) && (addr) < VM_MAX_ADDRESS))
#if 0
boolean_t db_check_access __P((vm_offset_t, int, task_t));
boolean_t db_phys_eq __P((task_t, vm_offset_t, task_t, vm_offset_t));
#endif
/* 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 "? "
/*
* Constants for KGDB.
*/
typedef long kgdb_reg_t;
#define KGDB_NUMREGS 14
#define KGDB_BUFLEN 512
#if 0
void db_task_name(/* task_t */);
#endif
/* macro for checking if a thread has used floating-point */
#define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0)
#define next_instr_address(v, b) ((db_addr_t) ((b) ? (v + 4) : ((v) + 2)))
int kdb_trap __P((int, int, db_regs_t *));
/*
* We use ELF symbols in DDB.
*
*/
#define DB_ELF_SYMBOLS
#define DB_ELFSIZE 32
/*
* SH cpus have no hardware single-step.
*/
#define SOFTWARE_SSTEP
/* XXX following three functions is not implemented yet. (msaitoh) */
boolean_t inst_branch __P((int inst));
db_addr_t branch_taken __P((int inst, db_addr_t pc, db_regs_t *regs));
boolean_t inst_unconditional_flow_transfer __P((int inst));
#endif /* _SH3_DB_MACHDEP_H_ */