1 /* $NetBSD: db_machdep.h,v 1.8 2002/05/09 12:24:20 uch 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 _SH3_DB_MACHDEP_H_ 30 #define _SH3_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 */ 35 36 #include <sys/param.h> 37 #include <uvm/uvm_extern.h> 38 #include <sh3/exception.h> 39 40 typedef vaddr_t db_addr_t; /* address - unsigned */ 41 typedef long db_expr_t; /* expression - signed */ 42 43 typedef struct trapframe db_regs_t; 44 db_regs_t ddb_regs; /* register state */ 45 #define DDB_REGS (&ddb_regs) 46 47 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_spc) 48 49 #define BKPT_INST 0xc3c3 /* breakpoint instruction */ 50 #define BKPT_SIZE 2 /* size of breakpoint inst */ 51 #define BKPT_SET(inst) BKPT_INST 52 53 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_spc -= BKPT_SIZE) 54 55 #define IS_BREAKPOINT_TRAP(type, code) ((type) == EXPEVT_BREAK) 56 #define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX (msaitoh) */ 57 58 #define inst_load(ins) 0 59 #define inst_store(ins) 0 60 61 /* access capability and access macros */ 62 63 #define DB_ACCESS_LEVEL 2 /* access any space */ 64 #define DB_CHECK_ACCESS(addr, size, task) \ 65 db_check_access(addr, size, task) 66 #define DB_PHYS_EQ(task1, addr1, task2, addr2) \ 67 db_phys_eq(task1, addr1, task2, addr2) 68 #define DB_VALID_KERN_ADDR(addr) \ 69 ((addr) >= VM_MIN_KERNEL_ADDRESS && \ 70 (addr) < VM_MAX_KERNEL_ADDRESS) 71 #define DB_VALID_ADDRESS(addr, user) \ 72 ((!(user) && DB_VALID_KERN_ADDR(addr)) || \ 73 ((user) && (addr) < VM_MAX_ADDRESS)) 74 75 /* macros for printing OS server dependent task name */ 76 77 #define DB_TASK_NAME(task) db_task_name(task) 78 #define DB_TASK_NAME_TITLE "COMMAND " 79 #define DB_TASK_NAME_LEN 23 80 #define DB_NULL_TASK_NAME "? " 81 82 /* 83 * Constants for KGDB. 84 */ 85 typedef long kgdb_reg_t; 86 #define KGDB_NUMREGS 59 87 #define KGDB_BUFLEN 1024 88 89 /* macro for checking if a thread has used floating-point */ 90 #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0) 91 92 int kdb_trap(int, int, db_regs_t *); 93 boolean_t inst_call(int); 94 boolean_t inst_return(int); 95 boolean_t inst_trap_return(int); 96 97 /* 98 * We use ELF symbols in DDB. 99 * 100 */ 101 #define DB_ELF_SYMBOLS 102 #define DB_ELFSIZE 32 103 104 /* 105 * We have machine-dependent commands. 106 */ 107 #define DB_MACHINE_COMMANDS 108 109 extern const char kgdb_devname[]; 110 111 #endif /* !_SH3_DB_MACHDEP_H_ */ 112