1 /* $NetBSD: db_machdep.h,v 1.19 2017/11/06 03:47:45 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1995 Carnegie-Mellon University. 5 * All rights reserved. 6 * 7 * Author: Chris G. Demetriou 8 * 9 * Permission to use, copy, modify and distribute this software and 10 * its 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 17 * FOR 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 the 27 * rights to redistribute these changes. 28 */ 29 30 #ifndef _ALPHA_DB_MACHDEP_H_ 31 #define _ALPHA_DB_MACHDEP_H_ 32 33 /* 34 * Machine-dependent defines for new kernel debugger. 35 */ 36 37 #include <sys/param.h> 38 #include <uvm/uvm_extern.h> 39 #include <machine/frame.h> 40 41 typedef vaddr_t db_addr_t; /* address - unsigned */ 42 #define DDB_EXPR_FMT "l" /* expression is long */ 43 typedef long db_expr_t; /* expression - signed */ 44 45 typedef struct trapframe db_regs_t; 46 extern db_regs_t *ddb_regp; /* pointer to current register state */ 47 #define DDB_REGS (ddb_regp) 48 49 #define PC_REGS(regs) ((regs)->tf_regs[FRAME_PC]) 50 51 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 52 #define BKPT_INST 0x00000080 /* breakpoint instruction */ 53 #define BKPT_SIZE (4) /* size of breakpoint inst */ 54 #define BKPT_SET(inst, addr) (BKPT_INST) 55 56 #define FIXUP_PC_AFTER_BREAK(regs) \ 57 ((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE) 58 59 #define SOFTWARE_SSTEP 1 /* no hardware support */ 60 #define IS_BREAKPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_IF && \ 61 (code) == ALPHA_IF_CODE_BPT) 62 #define IS_WATCHPOINT_TRAP(type, code) 0 63 64 /* 65 * Functions needed for software single-stepping. 66 */ 67 68 bool db_inst_trap_return(int inst); 69 bool db_inst_return(int inst); 70 bool db_inst_call(int inst); 71 bool db_inst_branch(int inst); 72 bool db_inst_load(int inst); 73 bool db_inst_store(int inst); 74 bool db_inst_unconditional_flow_transfer(int inst); 75 db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); 76 77 #define inst_trap_return(ins) db_inst_trap_return(ins) 78 #define inst_return(ins) db_inst_return(ins) 79 #define inst_call(ins) db_inst_call(ins) 80 #define inst_branch(ins) db_inst_branch(ins) 81 #define inst_load(ins) db_inst_load(ins) 82 #define inst_store(ins) db_inst_store(ins) 83 #define inst_unconditional_flow_transfer(ins) \ 84 db_inst_unconditional_flow_transfer(ins) 85 #define branch_taken(ins, pc, regs) \ 86 db_branch_taken((ins), (pc), (regs)) 87 88 /* No delay slots on Alpha. */ 89 #define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4))) 90 91 u_long db_register_value(db_regs_t *, int); 92 int ddb_trap(unsigned long, unsigned long, unsigned long, 93 unsigned long, struct trapframe *); 94 95 int alpha_debug(unsigned long, unsigned long, unsigned long, 96 unsigned long, struct trapframe *); 97 98 struct alpha_bus_space; 99 void alpha_kgdb_init(const char **, struct alpha_bus_space *); 100 101 /* 102 * We define some of our own commands. 103 */ 104 #define DB_MACHINE_COMMANDS 105 106 /* 107 * We use Elf64 symbols in DDB. 108 */ 109 #define DB_ELF_SYMBOLS 110 111 /* 112 * Stuff for KGDB. 113 */ 114 typedef long kgdb_reg_t; 115 #define KGDB_NUMREGS 66 /* from tm-alpha.h, NUM_REGS */ 116 #define KGDB_REG_V0 0 117 #define KGDB_REG_T0 1 118 #define KGDB_REG_T1 2 119 #define KGDB_REG_T2 3 120 #define KGDB_REG_T3 4 121 #define KGDB_REG_T4 5 122 #define KGDB_REG_T5 6 123 #define KGDB_REG_T6 7 124 #define KGDB_REG_T7 8 125 #define KGDB_REG_S0 9 126 #define KGDB_REG_S1 10 127 #define KGDB_REG_S2 11 128 #define KGDB_REG_S3 12 129 #define KGDB_REG_S4 13 130 #define KGDB_REG_S5 14 131 #define KGDB_REG_S6 15 /* FP */ 132 #define KGDB_REG_A0 16 133 #define KGDB_REG_A1 17 134 #define KGDB_REG_A2 18 135 #define KGDB_REG_A3 19 136 #define KGDB_REG_A4 20 137 #define KGDB_REG_A5 21 138 #define KGDB_REG_T8 22 139 #define KGDB_REG_T9 23 140 #define KGDB_REG_T10 24 141 #define KGDB_REG_T11 25 142 #define KGDB_REG_RA 26 143 #define KGDB_REG_T12 27 144 #define KGDB_REG_AT 28 145 #define KGDB_REG_GP 29 146 #define KGDB_REG_SP 30 147 #define KGDB_REG_ZERO 31 148 #define KGDB_REG_F0 32 149 #define KGDB_REG_F1 33 150 #define KGDB_REG_F2 34 151 #define KGDB_REG_F3 35 152 #define KGDB_REG_F4 36 153 #define KGDB_REG_F5 37 154 #define KGDB_REG_F6 38 155 #define KGDB_REG_F7 39 156 #define KGDB_REG_F8 40 157 #define KGDB_REG_F9 41 158 #define KGDB_REG_F10 42 159 #define KGDB_REG_F11 43 160 #define KGDB_REG_F12 44 161 #define KGDB_REG_F13 45 162 #define KGDB_REG_F14 46 163 #define KGDB_REG_F15 47 164 #define KGDB_REG_F16 48 165 #define KGDB_REG_F17 49 166 #define KGDB_REG_F18 50 167 #define KGDB_REG_F19 51 168 #define KGDB_REG_F20 52 169 #define KGDB_REG_F21 53 170 #define KGDB_REG_F22 54 171 #define KGDB_REG_F23 55 172 #define KGDB_REG_F24 56 173 #define KGDB_REG_F25 57 174 #define KGDB_REG_F26 58 175 #define KGDB_REG_F27 59 176 #define KGDB_REG_F28 60 177 #define KGDB_REG_F29 61 178 #define KGDB_REG_F30 62 179 #define KGDB_REG_F31 63 180 #define KGDB_REG_PC 64 181 #define KGDB_REG_VFP 65 182 183 /* Too much? Must be large enough for register transfer. */ 184 #define KGDB_BUFLEN 1024 185 186 #endif /* _ALPHA_DB_MACHDEP_H_ */ 187