1 /* $NetBSD: db_machdep.h,v 1.4 1997/06/26 01:27:01 thorpej Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 */ 28 29 #ifndef _VAX_DB_MACHDEP_H_ 30 #define _VAX_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 * Modified for vax out of i386 code. 35 */ 36 37 #include <sys/param.h> 38 #include <vm/vm.h> 39 #include <machine/trap.h> 40 41 typedef vm_offset_t db_addr_t; /* address - unsigned */ 42 typedef int db_expr_t; /* expression - signed */ 43 44 typedef struct trapframe db_regs_t; 45 db_regs_t ddb_regs; /* register state */ 46 #define DDB_REGS (&ddb_regs) 47 48 #define PC_REGS(regs) ((db_addr_t)(regs)->pc) 49 50 #define BKPT_INST 0x03 /* breakpoint instruction */ 51 #define BKPT_SIZE (1) /* size of breakpoint inst */ 52 #define BKPT_SET(inst) (BKPT_INST) 53 54 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->pc -= BKPT_SIZE) 55 56 #define db_clear_single_step(regs) ((regs)->psl &= ~PSL_T) 57 #define db_set_single_step(regs) ((regs)->psl |= PSL_T) 58 59 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) 60 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP) 61 62 #define I_CALL 0xfb 63 #define I_RET 0x04 64 #define I_IRET 0x02 65 66 #define inst_trap_return(ins) (((ins)&0xff) == I_IRET) 67 #define inst_return(ins) (((ins)&0xff) == I_RET) 68 #define inst_call(ins) (((ins)&0xff) == I_CALL) 69 70 #define inst_load(ins) 0 71 #define inst_store(ins) 0 72 73 /* Prototypes */ 74 void kdb_trap __P((struct trapframe *)); 75 76 /* 77 * We use a.out symbols in DDB. 78 */ 79 #define DB_AOUT_SYMBOLS 80 81 #endif /* _VAX_DB_MACHDEP_H_ */ 82