1 /* $NetBSD: db_machdep.h,v 1.28 2017/11/06 03:47:48 christos 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 #include <sys/types.h> 36 37 #include <uvm/uvm_extern.h> 38 39 #include <machine/frame.h> 40 #include <machine/pcb.h> 41 #include <machine/psl.h> 42 #include <machine/trap.h> 43 #include <machine/reg.h> 44 45 typedef vaddr_t db_addr_t; /* address - unsigned */ 46 #define DDB_EXPR_FMT "l" /* expression is long */ 47 typedef long db_expr_t; /* expression - signed */ 48 49 typedef struct { 50 struct trapframe db_tf; 51 struct frame db_fr; 52 } db_regs_t; 53 54 /* Current CPU register state */ 55 extern struct cpu_info *ddb_cpuinfo; 56 extern db_regs_t *ddb_regp; 57 #define DDB_REGS ddb_regp 58 #define DDB_TF (&ddb_regp->db_tf) 59 #define DDB_FR (&ddb_regp->db_fr) 60 61 62 #if defined(lint) 63 #define PC_REGS(regs) ((regs)->db_tf.tf_pc) 64 #else 65 #define PC_REGS(regs) ((db_addr_t)(regs)->db_tf.tf_pc) 66 #endif 67 #define PC_ADVANCE(regs) do { \ 68 int n = (regs)->db_tf.tf_npc; \ 69 (regs)->db_tf.tf_pc = n; \ 70 (regs)->db_tf.tf_npc = n + 4; \ 71 } while(0) 72 73 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 74 #define BKPT_INST 0x91d02001 /* breakpoint instruction */ 75 #define BKPT_SIZE (4) /* size of breakpoint inst */ 76 #define BKPT_SET(inst, addr) (BKPT_INST) 77 78 #define IS_BREAKPOINT_TRAP(type, code) \ 79 ((type) == T_BREAKPOINT || (type) == T_KGDB_EXEC) 80 #define IS_WATCHPOINT_TRAP(type, code) (0) 81 82 /* 83 * Sparc cpus have no hardware single-step. 84 */ 85 #define SOFTWARE_SSTEP 86 87 bool db_inst_trap_return(int inst); 88 bool db_inst_return(int inst); 89 bool db_inst_call(int inst); 90 bool db_inst_branch(int inst); 91 int db_inst_load(int inst); 92 int db_inst_store(int inst); 93 bool db_inst_unconditional_flow_transfer(int inst); 94 db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); 95 96 #define inst_trap_return(ins) db_inst_trap_return(ins) 97 #define inst_return(ins) db_inst_return(ins) 98 #define inst_call(ins) db_inst_call(ins) 99 #define inst_branch(ins) db_inst_branch(ins) 100 #define inst_load(ins) db_inst_load(ins) 101 #define inst_store(ins) db_inst_store(ins) 102 #define inst_unconditional_flow_transfer(ins) \ 103 db_inst_unconditional_flow_transfer(ins) 104 #define branch_taken(ins, pc, regs) \ 105 db_branch_taken((ins), (pc), (regs)) 106 107 /* see note in db_interface.c about reversed breakpoint addrs */ 108 #define next_instr_address(pc, bd) \ 109 ((bd) ? (pc) : ddb_regp->db_tf.tf_npc) 110 111 112 113 #define DB_MACHINE_COMMANDS 114 115 int kdb_trap(int, struct trapframe *); 116 117 /* 118 * We use elf symbols in DDB. 119 */ 120 #define DB_ELF_SYMBOLS 121 122 123 /* 124 * KGDB definitions 125 */ 126 typedef u_long kgdb_reg_t; 127 #define KGDB_NUMREGS 72 128 #define KGDB_BUFLEN 1024 129 130 #endif /* _SPARC_DB_MACHDEP_H_ */ 131