db_machdep.h revision 1.13
1 /* $NetBSD: db_machdep.h,v 1.13 2001/04/19 17:48:47 thorpej 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 (at) 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 typedef long db_expr_t; /* expression - signed */ 43 44 typedef struct trapframe db_regs_t; 45 extern db_regs_t *ddb_regp; /* pointer to current register state */ 46 #define DDB_REGS (ddb_regp) 47 48 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_regs[FRAME_PC]) 49 50 #define BKPT_INST 0x00000080 /* breakpoint instruction */ 51 #define BKPT_SIZE (4) /* size of breakpoint inst */ 52 #define BKPT_SET(inst) (BKPT_INST) 53 54 #define FIXUP_PC_AFTER_BREAK(regs) \ 55 ((regs)->tf_regs[FRAME_PC] -= BKPT_SIZE) 56 57 #define SOFTWARE_SSTEP 1 /* no hardware support */ 58 #define IS_BREAKPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_IF && \ 59 (code) == ALPHA_IF_CODE_BPT) 60 #define IS_WATCHPOINT_TRAP(type, code) 0 61 62 /* 63 * Functions needed for software single-stepping. 64 */ 65 66 boolean_t db_inst_trap_return(int inst); 67 boolean_t db_inst_return(int inst); 68 boolean_t db_inst_call(int inst); 69 boolean_t db_inst_branch(int inst); 70 boolean_t db_inst_load(int inst); 71 boolean_t db_inst_store(int inst); 72 boolean_t db_inst_unconditional_flow_transfer(int inst); 73 db_addr_t db_branch_taken(int inst, db_addr_t pc, db_regs_t *regs); 74 75 #define inst_trap_return(ins) db_inst_trap_return(ins) 76 #define inst_return(ins) db_inst_return(ins) 77 #define inst_call(ins) db_inst_call(ins) 78 #define inst_branch(ins) db_inst_branch(ins) 79 #define inst_load(ins) db_inst_load(ins) 80 #define inst_store(ins) db_inst_store(ins) 81 #define inst_unconditional_flow_transfer(ins) \ 82 db_inst_unconditional_flow_transfer(ins) 83 #define branch_taken(ins, pc, regs) \ 84 db_branch_taken((ins), (pc), (regs)) 85 86 /* No delay slots on Alpha. */ 87 #define next_instr_address(v, b) ((db_addr_t) ((b) ? (v) : ((v) + 4))) 88 89 u_long db_register_value(db_regs_t *, int); 90 int ddb_trap(unsigned long, unsigned long, unsigned long, 91 unsigned long, struct trapframe *); 92 93 int alpha_debug(unsigned long, unsigned long, unsigned long, 94 unsigned long, struct trapframe *); 95 96 struct alpha_bus_space; 97 void alpha_kgdb_init(const char **, struct alpha_bus_space *); 98 99 /* 100 * We define some of our own commands. 101 */ 102 #define DB_MACHINE_COMMANDS 103 104 /* 105 * We use Elf64 symbols in DDB. 106 */ 107 #define DB_ELF_SYMBOLS 108 #define DB_ELFSIZE 64 109 110 /* 111 * Stuff for KGDB. 112 */ 113 typedef long kgdb_reg_t; 114 #define KGDB_NUMREGS 66 /* from tm-alpha.h, NUM_REGS */ 115 #define KGDB_REG_V0 0 116 #define KGDB_REG_T0 1 117 #define KGDB_REG_T1 2 118 #define KGDB_REG_T2 3 119 #define KGDB_REG_T3 4 120 #define KGDB_REG_T4 5 121 #define KGDB_REG_T5 6 122 #define KGDB_REG_T6 7 123 #define KGDB_REG_T7 8 124 #define KGDB_REG_S0 9 125 #define KGDB_REG_S1 10 126 #define KGDB_REG_S2 11 127 #define KGDB_REG_S3 12 128 #define KGDB_REG_S4 13 129 #define KGDB_REG_S5 14 130 #define KGDB_REG_S6 15 /* FP */ 131 #define KGDB_REG_A0 16 132 #define KGDB_REG_A1 17 133 #define KGDB_REG_A2 18 134 #define KGDB_REG_A3 19 135 #define KGDB_REG_A4 20 136 #define KGDB_REG_A5 21 137 #define KGDB_REG_T8 22 138 #define KGDB_REG_T9 23 139 #define KGDB_REG_T10 24 140 #define KGDB_REG_T11 25 141 #define KGDB_REG_RA 26 142 #define KGDB_REG_T12 27 143 #define KGDB_REG_AT 28 144 #define KGDB_REG_GP 29 145 #define KGDB_REG_SP 30 146 #define KGDB_REG_ZERO 31 147 #define KGDB_REG_F0 32 148 #define KGDB_REG_F1 33 149 #define KGDB_REG_F2 34 150 #define KGDB_REG_F3 35 151 #define KGDB_REG_F4 36 152 #define KGDB_REG_F5 37 153 #define KGDB_REG_F6 38 154 #define KGDB_REG_F7 39 155 #define KGDB_REG_F8 40 156 #define KGDB_REG_F9 41 157 #define KGDB_REG_F10 42 158 #define KGDB_REG_F11 43 159 #define KGDB_REG_F12 44 160 #define KGDB_REG_F13 45 161 #define KGDB_REG_F14 46 162 #define KGDB_REG_F15 47 163 #define KGDB_REG_F16 48 164 #define KGDB_REG_F17 49 165 #define KGDB_REG_F18 50 166 #define KGDB_REG_F19 51 167 #define KGDB_REG_F20 52 168 #define KGDB_REG_F21 53 169 #define KGDB_REG_F22 54 170 #define KGDB_REG_F23 55 171 #define KGDB_REG_F24 56 172 #define KGDB_REG_F25 57 173 #define KGDB_REG_F26 58 174 #define KGDB_REG_F27 59 175 #define KGDB_REG_F28 60 176 #define KGDB_REG_F29 61 177 #define KGDB_REG_F30 62 178 #define KGDB_REG_F31 63 179 #define KGDB_REG_PC 64 180 #define KGDB_REG_VFP 65 181 182 /* Too much? Must be large enough for register transfer. */ 183 #define KGDB_BUFLEN 1024 184 185 #endif /* _ALPHA_DB_MACHDEP_H_ */ 186
Indexes created Mon Sep 29 21:09:56 GMT 2025