1 /* $NetBSD: db_machdep.h,v 1.14 2000/06/29 07:40:08 mrg 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 _SPARC_DB_MACHDEP_H_ 30 #define _SPARC_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 */ 35 36 37 #include <uvm/uvm_extern.h> 38 #include <machine/frame.h> 39 #include <machine/psl.h> 40 #include <machine/trap.h> 41 #include <machine/reg.h> 42 43 /* end of mangling */ 44 45 typedef vaddr_t db_addr_t; /* address - unsigned */ 46 typedef long db_expr_t; /* expression - signed */ 47 48 typedef struct { 49 struct trapframe db_tf; 50 struct frame db_fr; 51 } db_regs_t; 52 53 db_regs_t ddb_regs; /* register state */ 54 #define DDB_REGS (&ddb_regs) 55 #define DDB_TF (&ddb_regs.db_tf) 56 #define DDB_FR (&ddb_regs.db_fr) 57 58 #if defined(lint) 59 #define PC_REGS(regs) ((regs)->db_tf.tf_pc) 60 #else 61 #define PC_REGS(regs) ((db_addr_t)(regs)->db_tf.tf_pc) 62 #endif 63 #define PC_ADVANCE(regs) do { \ 64 int n = (regs)->db_tf.tf_npc; \ 65 (regs)->db_tf.tf_pc = n; \ 66 (regs)->db_tf.tf_npc = n + 4; \ 67 } while(0) 68 69 #define BKPT_INST 0x91d02001 /* breakpoint instruction */ 70 #define BKPT_SIZE (4) /* size of breakpoint inst */ 71 #define BKPT_SET(inst) (BKPT_INST) 72 73 #define IS_BREAKPOINT_TRAP(type, code) \ 74 ((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC) 75 #define IS_WATCHPOINT_TRAP(type, code) (0) 76 77 /* 78 * Sparc cpus have no hardware single-step. 79 */ 80 #define SOFTWARE_SSTEP 81 82 boolean_t db_inst_trap_return __P((int inst)); 83 boolean_t db_inst_return __P((int inst)); 84 boolean_t db_inst_call __P((int inst)); 85 boolean_t db_inst_branch __P((int inst)); 86 int db_inst_load __P((int inst)); 87 int db_inst_store __P((int inst)); 88 boolean_t db_inst_unconditional_flow_transfer __P((int inst)); 89 db_addr_t db_branch_taken __P((int inst, db_addr_t pc, db_regs_t *regs)); 90 91 #define inst_trap_return(ins) db_inst_trap_return(ins) 92 #define inst_return(ins) db_inst_return(ins) 93 #define inst_call(ins) db_inst_call(ins) 94 #define inst_branch(ins) db_inst_branch(ins) 95 #define inst_load(ins) db_inst_load(ins) 96 #define inst_store(ins) db_inst_store(ins) 97 #define inst_unconditional_flow_transfer(ins) \ 98 db_inst_unconditional_flow_transfer(ins) 99 #define branch_taken(ins, pc, regs) \ 100 db_branch_taken((ins), (pc), (regs)) 101 102 /* see note in db_interface.c about reversed breakpoint addrs */ 103 #define next_instr_address(pc, bd) \ 104 ((bd) ? (pc) : ddb_regs.db_tf.tf_npc) 105 106 107 108 #define DB_MACHINE_COMMANDS 109 110 void db_machine_init __P((void)); 111 int kdb_trap __P((int, struct trapframe *)); 112 113 /* 114 * We use both a.out and elf symbols in DDB. 115 */ 116 #define DB_AOUT_SYMBOLS 117 #define DB_ELF_SYMBOLS 118 #define DB_ELFSIZE 32 119 120 121 /* 122 * KGDB definitions 123 */ 124 typedef u_long kgdb_reg_t; 125 #define KGDB_NUMREGS 72 126 #define KGDB_BUFLEN 1024 127 128 #endif /* _SPARC_DB_MACHDEP_H_ */ 129