1 /* $OpenBSD: db_machdep.h,v 1.4 2008/02/11 20:44:11 miod Exp $ */ 2 /* $NetBSD: db_machdep.h,v 1.12 2006/05/10 06:24:03 skrll Exp $ */ 3 4 /* 5 * Mach Operating System 6 * Copyright (c) 1991,1990 Carnegie Mellon University 7 * All Rights Reserved. 8 * 9 * Permission to use, copy, modify and distribute this software and its 10 * documentation is hereby granted, provided that both the copyright 11 * notice and this permission notice appear in all copies of the 12 * software, derivative works or modified versions, and any portions 13 * thereof, and that both notices appear in supporting documentation. 14 * 15 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 16 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 17 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 18 * 19 * Carnegie Mellon requests users of this software to return to 20 * 21 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 22 * School of Computer Science 23 * Carnegie Mellon University 24 * Pittsburgh PA 15213-3890 25 * 26 * any improvements or extensions that they make and grant Carnegie Mellon 27 * the rights to redistribute these changes. 28 */ 29 30 #ifndef _SH_DB_MACHDEP_H_ 31 #define _SH_DB_MACHDEP_H_ 32 33 /* 34 * Machine-dependent defines for the kernel debugger. 35 */ 36 37 #include <sys/param.h> 38 #include <uvm/uvm_extern.h> 39 #include <sh/trap.h> 40 41 typedef vaddr_t db_addr_t; /* address - unsigned */ 42 typedef long db_expr_t; /* expression - signed */ 43 44 typedef struct trapframe db_regs_t; 45 extern db_regs_t ddb_regs; /* register state */ 46 #define DDB_REGS (&ddb_regs) 47 48 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_spc) 49 #define PC_ADVANCE(regs) ((regs)->tf_spc += BKPT_SIZE) 50 51 #define BKPT_INST 0xc3c3 /* breakpoint instruction */ 52 #define BKPT_SIZE 2 /* size of breakpoint inst */ 53 #define BKPT_SET(inst) BKPT_INST 54 55 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_spc -= BKPT_SIZE) 56 57 #define IS_BREAKPOINT_TRAP(type, code) ((type) == EXPEVT_TRAPA) 58 #define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX (msaitoh) */ 59 60 #define inst_load(ins) 0 61 #define inst_store(ins) 0 62 63 int kdb_trap(int, int, db_regs_t *); 64 void db_machine_init (void); 65 boolean_t inst_call(int); 66 boolean_t inst_return(int); 67 boolean_t inst_trap_return(int); 68 69 /* 70 * We use ELF symbols in DDB. 71 * 72 */ 73 #define DB_ELF_SYMBOLS 74 #define DB_ELFSIZE 32 75 76 /* 77 * We have machine-dependent commands. 78 */ 79 #define DB_MACHINE_COMMANDS 80 81 #endif /* !_SH_DB_MACHDEP_H_ */ 82