1 /* $NetBSD: db_machdep.h,v 1.26 2005/12/11 12:17:53 christos Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1992 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 /* 30 * Machine-dependent defines for new kernel debugger. 31 */ 32 #ifndef _M68K_DB_MACHDEP_H_ 33 #define _M68K_DB_MACHDEP_H_ 34 35 #include <sys/types.h> 36 37 /* 38 * XXX - Would rather not pull in vm headers, but need boolean_t, 39 * at least until boolean_t moves to <sys/types.h> or someplace. 40 */ 41 #include <uvm/uvm_param.h> 42 43 #include <machine/frame.h> 44 #include <machine/psl.h> 45 #include <machine/trap.h> 46 47 typedef vaddr_t db_addr_t; /* address - unsigned */ 48 typedef long db_expr_t; /* expression - signed */ 49 typedef struct trapframe db_regs_t; 50 51 extern db_regs_t ddb_regs; /* register state */ 52 #define DDB_REGS (&ddb_regs) 53 54 #define PC_REGS(regs) ((regs)->tf_pc) 55 56 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 57 #define BKPT_INST 0x4e4f /* breakpoint instruction */ 58 #define BKPT_SIZE (2) /* size of breakpoint inst */ 59 #define BKPT_SET(inst) (BKPT_INST) 60 61 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_pc -= BKPT_SIZE) 62 63 #define db_clear_single_step(regs) ((regs)->tf_sr &= ~PSL_T) 64 #define db_set_single_step(regs) ((regs)->tf_sr |= PSL_T) 65 66 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAKPOINT) 67 #ifdef T_WATCHPOINT 68 #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) 69 #else 70 #define IS_WATCHPOINT_TRAP(type, code) 0 71 #endif 72 73 #define M_RTS 0xffff0000 74 #define I_RTS 0x4e750000 75 #define M_JSR 0xffc00000 76 #define I_JSR 0x4e800000 77 #define M_BSR 0xff000000 78 #define I_BSR 0x61000000 79 #define M_RTE 0xffff0000 80 #define I_RTE 0x4e730000 81 82 #define inst_trap_return(ins) (((ins)&M_RTE) == I_RTE) 83 #define inst_return(ins) (((ins)&M_RTS) == I_RTS) 84 #define inst_call(ins) (((ins)&M_JSR) == I_JSR || \ 85 ((ins)&M_BSR) == I_BSR) 86 #define inst_load(ins) 0 87 #define inst_store(ins) 0 88 89 /* 90 * Things needed by kgdb: 91 */ 92 typedef long kgdb_reg_t; 93 #define KGDB_NUMREGS (16+2) 94 #define KGDB_BUFLEN 512 95 96 97 #ifdef _KERNEL 98 99 void Debugger(void); /* XXX */ 100 void kdb_kintr(db_regs_t *); 101 int kdb_trap(int, db_regs_t *); 102 103 #endif /* _KERNEL */ 104 105 /* 106 * We use either a.out or Elf32 symbols in DDB. 107 */ 108 #define DB_AOUT_SYMBOLS 109 #define DB_ELF_SYMBOLS 110 #define DB_ELFSIZE 32 111 112 #endif /* _M68K_DB_MACHDEP_H_ */ 113