db_machdep.h revision 1.3
1 /* $NetBSD: db_machdep.h,v 1.3 2018/04/01 04:35:03 ryo Exp $ */ 2 3 /*- 4 * Copyright (c) 2014 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Matt Thomas of 3am Software Foundry. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /*- 33 * Copyright (c) 2014 Andrew Turner 34 * Copyright (c) 2014-2015 The FreeBSD Foundation 35 * All rights reserved. 36 * 37 * This software was developed by Semihalf under 38 * sponsorship from the FreeBSD Foundation. 39 * 40 * Redistribution and use in source and binary forms, with or without 41 * modification, are permitted provided that the following conditions 42 * are met: 43 * 1. Redistributions of source code must retain the above copyright 44 * notice, this list of conditions and the following disclaimer. 45 * 2. Redistributions in binary form must reproduce the above copyright 46 * notice, this list of conditions and the following disclaimer in the 47 * documentation and/or other materials provided with the distribution. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 52 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 59 * SUCH DAMAGE. 60 * 61 * $FreeBSD: head/sys/arm64/include/db_machdep.h 316001 2017-03-26 18:46:35Z bde $ 62 */ 63 64 #ifndef _AARCH64_DB_MACHDEP_H_ 65 #define _AARCH64_DB_MACHDEP_H_ 66 67 #ifdef __aarch64__ 68 69 #include <sys/types.h> 70 #include <aarch64/frame.h> 71 72 typedef long long int db_expr_t; 73 #define DDB_EXPR_FMT "ll" 74 typedef uintptr_t db_addr_t; 75 76 #define BKPT_ADDR(addr) (addr) 77 #define BKPT_SIZE 4 78 #define BKPT_INSN 0xd4200000 /* brk #0 */ 79 #define BKPT_SET(insn, addr) (BKPT_INSN) 80 81 typedef struct trapframe db_regs_t; 82 extern db_regs_t ddb_regs; 83 #define DDB_REGS (&ddb_regs) 84 #define PC_REGS(tf) ((tf)->tf_pc) 85 86 int kdb_trap(int, struct trapframe *); 87 #define DB_TRAP_UNKNOWN 0 88 #define DB_TRAP_BREAKPOINT 1 89 #define DB_TRAP_BKPT_INSN 2 90 #define DB_TRAP_WATCHPOINT 3 91 #define DB_TRAP_SW_STEP 4 92 93 #define IS_BREAKPOINT_TRAP(type, code) \ 94 ((type) == DB_TRAP_BREAKPOINT || (type) == DB_TRAP_BKPT_INSN) 95 #define IS_WATCHPOINT_TRAP(type, code) \ 96 ((type) == DB_TRAP_WATCHPOINT) 97 98 static inline bool 99 inst_return(db_expr_t insn) 100 { 101 return ((insn & 0xfffffc1f) == 0xd65f0000); /* ret xN */ 102 } 103 104 static inline bool 105 inst_trap_return(db_expr_t insn) 106 { 107 return insn == 0xd69f03e0; /* eret */ 108 } 109 110 static inline bool 111 inst_call(db_expr_t insn) 112 { 113 return ((insn & 0xfc000000) == 0x94000000) /* bl */ 114 || ((insn & 0xfffffc1f) == 0xd63f0000); /* blr */ 115 } 116 117 static inline bool 118 inst_load(db_expr_t insn) 119 { 120 return 121 ((((insn) & 0x3b000000) == 0x18000000) || /* literal */ 122 (((insn) & 0x3f400000) == 0x08400000) || /* exclusive */ 123 (((insn) & 0x3bc00000) == 0x28400000) || /* no-allocate pair */ 124 ((((insn) & 0x3b200c00) == 0x38000400) && 125 (((insn) & 0x3be00c00) != 0x38000400) && 126 (((insn) & 0xffe00c00) != 0x3c800400)) || /* imm post-indexed */ 127 ((((insn) & 0x3b200c00) == 0x38000c00) && 128 (((insn) & 0x3be00c00) != 0x38000c00) && 129 (((insn) & 0xffe00c00) != 0x3c800c00)) || /* imm pre-indexed */ 130 ((((insn) & 0x3b200c00) == 0x38200800) && 131 (((insn) & 0x3be00c00) != 0x38200800) && 132 (((insn) & 0xffe00c00) != 0x3ca00c80)) || /* register offset */ 133 ((((insn) & 0x3b200c00) == 0x38000800) && 134 (((insn) & 0x3be00c00) != 0x38000800)) || /* unprivileged */ 135 ((((insn) & 0x3b200c00) == 0x38000000) && 136 (((insn) & 0x3be00c00) != 0x38000000) && 137 (((insn) & 0xffe00c00) != 0x3c800000)) || /* unscaled imm */ 138 ((((insn) & 0x3b000000) == 0x39000000) && 139 (((insn) & 0x3bc00000) != 0x39000000) && 140 (((insn) & 0xffc00000) != 0x3d800000)) || /* unsigned imm */ 141 (((insn) & 0x3bc00000) == 0x28400000) || /* pair (offset) */ 142 (((insn) & 0x3bc00000) == 0x28c00000) || /* pair (post-indexed) */ 143 (((insn) & 0x3bc00000) == 0x29800000)); /* pair (pre-indexed) */ 144 } 145 146 static inline bool 147 inst_store(db_expr_t insn) 148 { 149 return 150 ((((insn) & 0x3f400000) == 0x08000000) || /* exclusive */ 151 (((insn) & 0x3bc00000) == 0x28000000) || /* no-allocate pair */ 152 ((((insn) & 0x3be00c00) == 0x38000400) || 153 (((insn) & 0xffe00c00) == 0x3c800400)) || /* imm post-indexed */ 154 ((((insn) & 0x3be00c00) == 0x38000c00) || 155 (((insn) & 0xffe00c00) == 0x3c800c00)) || /* imm pre-indexed */ 156 ((((insn) & 0x3be00c00) == 0x38200800) || 157 (((insn) & 0xffe00c00) == 0x3ca00800)) || /* register offset */ 158 (((insn) & 0x3be00c00) == 0x38000800) || /* unprivileged */ 159 ((((insn) & 0x3be00c00) == 0x38000000) || 160 (((insn) & 0xffe00c00) == 0x3c800000)) || /* unscaled imm */ 161 ((((insn) & 0x3bc00000) == 0x39000000) || 162 (((insn) & 0xffc00000) == 0x3d800000)) || /* unsigned imm */ 163 (((insn) & 0x3bc00000) == 0x28000000) || /* pair (offset) */ 164 (((insn) & 0x3bc00000) == 0x28800000) || /* pair (post-indexed) */ 165 (((insn) & 0x3bc00000) == 0x29800000)); /* pair (pre-indexed) */ 166 } 167 168 #define SOFTWARE_SSTEP 169 170 #ifdef SOFTWARE_SSTEP 171 172 static inline bool 173 inst_branch(db_expr_t insn) 174 { 175 return 176 ((insn & 0xff000010) == 0x54000000) || /* b.cond */ 177 ((insn & 0xfc000000) == 0x14000000) || /* b imm */ 178 ((insn & 0xfffffc1f) == 0xd61f0000) || /* br */ 179 ((insn & 0x7f000000) == 0x35000000) || /* cbnz */ 180 ((insn & 0x7f000000) == 0x34000000) || /* cbz */ 181 ((insn & 0x7f000000) == 0x37000000) || /* tbnz */ 182 ((insn & 0x7f000000) == 0x36000000); /* tbz */ 183 } 184 185 bool db_inst_unconditional_flow_transfer(db_expr_t); 186 db_addr_t db_branch_taken(db_expr_t, db_addr_t, db_regs_t *); 187 188 #define next_instr_address(pc, bd) \ 189 ((bd) ? (pc) : ((pc) + 4)) 190 #define branch_taken(ins, pc, regs) \ 191 db_branch_taken((ins), (pc), (regs)) 192 #define inst_unconditional_flow_transfer(ins) \ 193 db_inst_unconditional_flow_transfer(ins) 194 195 #endif /* SOFTWARE_SSTEP */ 196 197 #define DB_MACHINE_COMMANDS 198 void dump_trapframe(struct trapframe *, void (*)(const char *, ...)); 199 200 201 202 void db_machdep_init(void); 203 204 /* hardware breakpoint/watchpoint functions */ 205 void aarch64_breakpoint_clear(int); 206 void aarch64_breakpoint_set(int, vaddr_t); 207 void aarch64_watchpoint_clear(int); 208 void aarch64_watchpoint_set(int, vaddr_t, int, int); 209 #define WATCHPOINT_ACCESS_LOAD 0x01 210 #define WATCHPOINT_ACCESS_STORE 0x02 211 #define WATCHPOINT_ACCESS_LOADSTORE 0x03 212 #define WATCHPOINT_ACCESS_MASK 0x03 213 214 215 #elif defined(__arm__) 216 217 #include <arm/db_machdep.h> 218 219 #endif 220 221 #endif /* _AARCH64_DB_MACHDEP_H_ */ 222
Indexes created Tue Sep 30 20:09:53 GMT 2025