/* $OpenBSD: db_machdep.h,v 1.23 2022/10/21 18:55:42 miod 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 #include #include #include #include /* end of mangling */ 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 trapframe ddb_tf; struct frame ddb_fr; struct trapstate ddb_ts[5]; int ddb_tl; struct fpstate 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) ((vaddr_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); vaddr_t db_branch_taken(int inst, vaddr_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 trapframe *); 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_ */