117 lines
4.0 KiB
C
117 lines
4.0 KiB
C
/* $NetBSD: db_machdep.h,v 1.16 2003/11/26 08:36:49 he Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1997 Jonathan Stone (hereinafter referred to as the author)
|
|
* 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 Jonathan Stone for
|
|
* the NetBSD Project.
|
|
* 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 _MIPS_DB_MACHDEP_H_
|
|
#define _MIPS_DB_MACHDEP_H_
|
|
|
|
#include <uvm/uvm_param.h> /* XXX boolean_t */
|
|
#include <mips/trap.h> /* T_BREAK */
|
|
#include <mips/reg.h> /* register state */
|
|
#include <mips/regnum.h> /* symbolic register indices */
|
|
#include <mips/proc.h> /* register state */
|
|
|
|
|
|
typedef vaddr_t db_addr_t; /* address - unsigned */
|
|
typedef long db_expr_t; /* expression - signed */
|
|
|
|
typedef struct frame db_regs_t;
|
|
|
|
extern db_regs_t ddb_regs; /* register state */
|
|
#define DDB_REGS (&ddb_regs)
|
|
|
|
#define PC_REGS(regs) ((db_addr_t)(regs)->f_regs[_R_PC])
|
|
|
|
#define PC_ADVANCE(regs) do { \
|
|
if ((db_get_value((regs)->f_regs[_R_PC], sizeof(int), FALSE) &\
|
|
0xfc00003f) == 0xd) \
|
|
(regs)->f_regs[_R_PC] += BKPT_SIZE; \
|
|
} while(0)
|
|
|
|
/* Similar to PC_ADVANCE(), except only advance on cpu_Debugger()'s bpt */
|
|
#define PC_BREAK_ADVANCE(regs) do { \
|
|
if (db_get_value((regs)->f_regs[_R_PC], sizeof(int), FALSE) == 0xd) \
|
|
(regs)->f_regs[_R_PC] += BKPT_SIZE; \
|
|
} while(0)
|
|
|
|
#define BKPT_ADDR(addr) (addr) /* breakpoint address */
|
|
#define BKPT_INST 0x0001000D
|
|
#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 mips3 watchpoint */
|
|
|
|
/*
|
|
* Interface to disassembly (shared with mdb)
|
|
*/
|
|
db_addr_t db_disasm_insn(int insn, db_addr_t loc, boolean_t altfmt);
|
|
|
|
|
|
/*
|
|
* Entrypoints to DDB for kernel, keyboard drivers, init hook
|
|
*/
|
|
void kdb_kbd_trap(db_regs_t *);
|
|
void db_set_ddb_regs(int type, mips_reg_t *);
|
|
int kdb_trap(int type, mips_reg_t *);
|
|
|
|
|
|
/*
|
|
* Constants for KGDB.
|
|
*/
|
|
typedef mips_reg_t kgdb_reg_t;
|
|
#define KGDB_NUMREGS 90
|
|
#define KGDB_BUFLEN 1024
|
|
|
|
/*
|
|
* MIPS cpus have no hardware single-step.
|
|
*/
|
|
#define SOFTWARE_SSTEP
|
|
|
|
#define inst_trap_return(ins) ((ins)&0)
|
|
|
|
boolean_t inst_branch(int inst);
|
|
boolean_t inst_call(int inst);
|
|
boolean_t inst_return(int inst);
|
|
boolean_t inst_load(int inst);
|
|
boolean_t inst_store(int inst);
|
|
boolean_t inst_unconditional_flow_transfer(int inst);
|
|
db_addr_t branch_taken(int inst, db_addr_t pc, db_regs_t *regs);
|
|
db_addr_t next_instr_address(db_addr_t pc, boolean_t bd);
|
|
|
|
/*
|
|
* We have machine-dependent commands.
|
|
*/
|
|
#define DB_MACHINE_COMMANDS
|
|
|
|
#endif /* _MIPS_DB_MACHDEP_H_ */
|