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/* $OpenBSD: db_machdep.h,v 1.20 2019/11/06 07:32:10 mpi Exp $ */
/* $NetBSD: db_machdep.h,v 1.12 2001/07/07 15:16:13 eeh 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 _MACHINE_DB_MACHDEP_H_
#define _MACHINE_DB_MACHDEP_H_
/*
* Machine-dependent defines for new kernel debugger.
*/
#include <uvm/uvm_extern.h>
#include <machine/frame.h>
#include <machine/psl.h>
#include <machine/trap.h>
#include <machine/reg.h>
/* end of mangling */
typedef vaddr_t db_addr_t; /* address - unsigned */
typedef long db_expr_t; /* expression - signed */
struct trapstate {
int64_t tstate;
int64_t tpc;
int64_t tnpc;
int64_t tt;
};
#if 1
typedef struct {
struct trapframe64 ddb_tf;
struct frame64 ddb_fr;
struct trapstate ddb_ts[5];
int ddb_tl;
struct fpstate64 ddb_fpstate;
} db_regs_t;
#else
typedef struct db_regs {
struct trapregs dbr_traps[4];
int dbr_y;
char dbr_tl;
char dbr_canrestore;
char dbr_cansave;
char dbr_cleanwin;
char dbr_cwp;
char dbr_wstate;
int64_t dbr_g[8];
int64_t dbr_ag[8];
int64_t dbr_ig[8];
int64_t dbr_mg[8];
int64_t dbr_out[8];
int64_t dbr_local[8];
int64_t dbr_in[8];
} db_regs_t;
#endif
extern db_regs_t ddb_regs; /* register state */
#define DDB_TF (&ddb_regs.ddb_tf)
#define DDB_FR (&ddb_regs.ddb_fr)
#define DDB_FP (&ddb_regs.ddb_fpstate)
#define PC_REGS(regs) ((db_addr_t)(regs)->ddb_tf.tf_pc)
#define SET_PC_REGS(regs, value) (regs)->ddb_tf.tf_pc = (int32_t)(value)
#define PC_ADVANCE(regs) do { \
vaddr_t n = (regs)->ddb_tf.tf_npc; \
(regs)->ddb_tf.tf_pc = n; \
(regs)->ddb_tf.tf_npc = n + 4; \
} while(0)
#define BKPT_INST 0x91d02001 /* breakpoint instruction */
#define BKPT_SIZE (4) /* size of breakpoint inst */
#define BKPT_SET(inst) (BKPT_INST)
#define IS_BREAKPOINT_TRAP(type, code) \
((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC)
#define IS_WATCHPOINT_TRAP(type, code) \
((type) ==T_PA_WATCHPT || (type) == T_VA_WATCHPT)
/*
* Sparc cpus have no hardware single-step.
*/
#define SOFTWARE_SSTEP
int db_inst_trap_return(int inst);
int db_inst_return(int inst);
int db_inst_call(int inst);
int db_inst_branch(int inst);
int db_inst_unconditional_flow_transfer(int inst);
db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs);
#define inst_trap_return(ins) db_inst_trap_return(ins)
#define inst_return(ins) db_inst_return(ins)
#define inst_call(ins) db_inst_call(ins)
#define inst_branch(ins) db_inst_branch(ins)
#define inst_unconditional_flow_transfer(ins) \
db_inst_unconditional_flow_transfer(ins)
#define branch_taken(ins, pc, fun, regs) \
db_branch_taken((ins), (pc), (regs))
/* see note in db_interface.c about reversed breakpoint addrs */
#define next_instr_address(pc, bd) \
((bd) ? (pc) : ddb_regs.ddb_tf.tf_npc)
#define DB_MACHINE_COMMANDS
void db_machine_init(void);
int db_ktrap(int, struct trapframe64 *);
int db_enter_ddb(void);
void db_startcpu(struct cpu_info *);
void db_stopcpu(struct cpu_info *);
#define DDB_STATE_NOT_RUNNING 0
#define DDB_STATE_RUNNING 1
#define DDB_STATE_EXITING 2
/* Register device-specific method for triggering XIRs. */
void db_register_xir(void (*)(void *, int), void *);
#endif /* _MACHINE_DB_MACHDEP_H_ */
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