1 /* $NetBSD: db_machdep.h,v 1.21 2025/03/22 10:37:19 hans 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/stdbool.h> 38 #include <sys/param.h> 39 #include <uvm/uvm.h> 40 #include <machine/trap.h> 41 #include <machine/psl.h> 42 43 typedef vaddr_t db_addr_t; /* address - unsigned */ 44 #define DDB_EXPR_FMT "l" /* expression is long */ 45 typedef long db_expr_t; /* expression - signed */ 46 47 typedef struct trapframe db_regs_t; 48 extern db_regs_t ddb_regs; /* register state */ 49 #define DDB_REGS (&ddb_regs) 50 51 #define PC_REGS(regs) (*(db_addr_t *)&(regs)->tf_pc) 52 53 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 54 #define BKPT_INST 0x03 /* breakpoint instruction */ 55 #define BKPT_SIZE (1) /* size of breakpoint inst */ 56 #define BKPT_SET(inst, addr) (BKPT_INST) 57 58 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE) 59 60 #define db_clear_single_step(regs) ((regs)->tf_psl &= ~PSL_T) 61 #define db_set_single_step(regs) ((regs)->tf_psl |= PSL_T) 62 63 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) 64 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_TRCTRAP) 65 66 #define I_CALL 0xfb 67 #define I_RET 0x04 68 #define I_IRET 0x02 69 70 #define inst_trap_return(ins) (((ins)&0xff) == I_IRET) 71 #define inst_return(ins) (((ins)&0xff) == I_RET) 72 #define inst_call(ins) (((ins)&0xff) == I_CALL) 73 74 #define inst_load(ins) 0 75 #define inst_store(ins) 0 76 77 #define DB_MACHINE_COMMANDS 78 79 /* Prototypes */ 80 void kdb_trap(struct trapframe *); 81 bool db_validate_address(vaddr_t); 82 83 /* 84 * We use a.out symbols in DDB (unless we are ELF then we use ELF symbols). 85 */ 86 #define DB_ELF_SYMBOLS 87 88 #endif /* _VAX_DB_MACHDEP_H_ */ 89