1 /* $NetBSD: db_machdep.h,v 1.16 2021/10/31 22:06:32 skrll 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 71 #include <uvm/uvm.h> 72 73 #include <aarch64/frame.h> 74 #include <aarch64/pmap.h> 75 76 #include <ddb/db_user.h> 77 78 typedef long long int db_expr_t; 79 #define DDB_EXPR_FMT "ll" 80 typedef uintptr_t db_addr_t; 81 82 #define BKPT_ADDR(addr) (addr) 83 #define BKPT_SIZE 4 84 #ifdef __AARCH64EB__ 85 #define BKPT_INSN 0x000020d4 /* brk #0 */ 86 #else 87 #define BKPT_INSN 0xd4200000 /* brk #0 */ 88 #endif 89 #define BKPT_SET(insn, addr) (BKPT_INSN) 90 91 typedef struct trapframe db_regs_t; 92 extern db_regs_t ddb_regs; 93 #define DDB_REGS (&ddb_regs) 94 #define PC_REGS(tf) ((tf)->tf_pc) 95 96 int kdb_trap(int, struct trapframe *); 97 #define DB_TRAP_UNKNOWN 0 98 #define DB_TRAP_BREAKPOINT 1 99 #define DB_TRAP_BKPT_INSN 2 100 #define DB_TRAP_WATCHPOINT 3 101 #define DB_TRAP_SW_STEP 4 102 103 #define IS_BREAKPOINT_TRAP(type, code) \ 104 ((type) == DB_TRAP_BKPT_INSN) 105 #define IS_WATCHPOINT_TRAP(type, code) \ 106 ((type) == DB_TRAP_BREAKPOINT || (type) == DB_TRAP_WATCHPOINT) 107 108 static inline bool 109 inst_return(db_expr_t insn) 110 { 111 LE32TOH(insn); 112 return ((insn & 0xfffffc1f) == 0xd65f0000); /* ret xN */ 113 } 114 115 static inline bool 116 inst_trap_return(db_expr_t insn) 117 { 118 LE32TOH(insn); 119 return insn == 0xd69f03e0; /* eret */ 120 } 121 122 static inline bool 123 inst_call(db_expr_t insn) 124 { 125 LE32TOH(insn); 126 return ((insn & 0xfc000000) == 0x94000000) /* bl */ 127 || ((insn & 0xfffffc1f) == 0xd63f0000); /* blr */ 128 } 129 130 static inline bool 131 inst_load(db_expr_t insn) 132 { 133 LE32TOH(insn); 134 return 135 ((insn & 0xffe00c00) == 0xb8800000) || /* ldursw */ 136 /* ldrsw imm{pre,post}idx */ 137 ((insn & 0xffe00400) == 0xb8800400) || 138 ((insn & 0xffc00c00) == 0xb8800800) || /* ldrsw reg,ldtrsw */ 139 ((insn & 0xffc00000) == 0xb9800000) || /* ldrsw immunsign */ 140 ((insn & 0xffc00000) == 0x39400000) || /* ldrb immunsign */ 141 ((insn & 0xff000000) == 0x98000000) || /* ldrsw literal */ 142 /* ldpsw {pre,post}idx */ 143 ((insn & 0xfec00000) == 0x68c00000) || 144 /* ldrh immunsign,ldpsw signed */ 145 ((insn & 0xefc00000) == 0x69400000) || 146 ((insn & 0xbfff0000) == 0x887f0000) || /* ldaxp,ldxp */ 147 ((insn & 0xbfc00000) == 0xb9400000) || /* ldr immunsign */ 148 ((insn & 0xbfa00c00) == 0x38800000) || /* ldursh,ldursb */ 149 /* ldrsh imm{pre,post}idx,ldrsb imm{pre,post}idx */ 150 ((insn & 0xbfa00400) == 0x38800400) || 151 /* ldrs[bh] reg,ldtrs[bh] */ 152 ((insn & 0xbf800c00) == 0x38800800) || 153 /* ldrsh immunsign,ldrsb immunsign */ 154 ((insn & 0xbf800000) == 0x39800000) || 155 ((insn & 0xbf000000) == 0x18000000) || /* ldr literal */ 156 /* ldp {pre,post}idx,ldp signed,ldnp */ 157 ((insn & 0x7e400000) == 0x28400000) || 158 ((insn & 0x3ffffc00) == 0x085f7c00) || /* ldxr,ldxr[bh] */ 159 ((insn & 0x3fe00c00) == 0x38400000) || /* ldur,ldur[bh] */ 160 /* ldr imm{pre,post}idx,ldr[bh]_imm{pre,post}idx */ 161 ((insn & 0x3fe00400) == 0x38400400) || 162 /* ldtr,ldtr[bh],ldr_reg,ldr[bh]_reg */ 163 ((insn & 0x3fc00c00) == 0x38400800) || 164 /* ldaxr,ldaxr[bh],ldar,ldar[bh] */ 165 ((insn & 0x3f7ffc00) == 0x085ffc00); 166 } 167 168 static inline bool 169 inst_store(db_expr_t insn) 170 { 171 LE32TOH(insn); 172 return 173 ((insn & 0xbfe00000) == 0x88200000) || /* stlxp,stxp */ 174 /* stp {pre,post}idx,stp signed,stnp */ 175 ((insn & 0x7e400000) == 0x28000000) || 176 ((insn & 0x3ffffc00) == 0x089ffc00) || /* stlr,stlr[bh] */ 177 /* stlxr,stlxr[bh],stxr,stxr[bh] */ 178 ((insn & 0x3fe07c00) == 0x08007c00) || 179 ((insn & 0x3fe00c00) == 0x38000000) || /* stur,stur[bh] */ 180 /* str imm{pre,post}idx,str[bh] imm{pre,post}idx */ 181 ((insn & 0x3fe00400) == 0x38000400) || 182 /* str reg,str[bh] reg,sttr,sttr[bh] */ 183 ((insn & 0x3fc00c00) == 0x38000800) || 184 /* str immunsign,str[bh] immunsign */ 185 ((insn & 0x3fc00000) == 0x39000000); 186 } 187 188 #define SOFTWARE_SSTEP 189 190 #ifdef SOFTWARE_SSTEP 191 192 static inline bool 193 inst_branch(db_expr_t insn) 194 { 195 LE32TOH(insn); 196 return 197 ((insn & 0xff000010) == 0x54000000) || /* b.cond */ 198 ((insn & 0xfc000000) == 0x14000000) || /* b imm */ 199 ((insn & 0xfffffc1f) == 0xd61f0000) || /* br */ 200 ((insn & 0x7f000000) == 0x35000000) || /* cbnz */ 201 ((insn & 0x7f000000) == 0x34000000) || /* cbz */ 202 ((insn & 0x7f000000) == 0x37000000) || /* tbnz */ 203 ((insn & 0x7f000000) == 0x36000000); /* tbz */ 204 } 205 206 bool db_inst_unconditional_flow_transfer(db_expr_t); 207 db_addr_t db_branch_taken(db_expr_t, db_addr_t, db_regs_t *); 208 209 #define next_instr_address(pc, bd) \ 210 ((bd) ? (pc) : ((pc) + 4)) 211 #define branch_taken(ins, pc, regs) \ 212 db_branch_taken((ins), (pc), (regs)) 213 #define inst_unconditional_flow_transfer(ins) \ 214 db_inst_unconditional_flow_transfer(ins) 215 216 #endif /* SOFTWARE_SSTEP */ 217 218 #define DB_MACHINE_COMMANDS 219 220 #ifdef _KERNEL 221 void db_pteinfo(vaddr_t, void (*)(const char *, ...) __printflike(1, 2)); 222 void db_pte_print(pt_entry_t, int, void (*)(const char *, ...) __printflike(1, 2)); 223 void db_ttbrdump(bool, vaddr_t, void (*pr)(const char *, ...) __printflike(1, 2)); 224 void db_machdep_cpu_init(void); 225 void db_machdep_init(struct cpu_info * const); 226 227 /* hardware breakpoint/watchpoint functions */ 228 void aarch64_breakpoint_set(int, vaddr_t); 229 void aarch64_watchpoint_set(int, vaddr_t, u_int, u_int); 230 #define WATCHPOINT_ACCESS_LOAD 0x01 231 #define WATCHPOINT_ACCESS_STORE 0x02 232 #define WATCHPOINT_ACCESS_LOADSTORE 0x03 233 #define WATCHPOINT_ACCESS_MASK 0x03 234 #endif 235 236 void dump_trapframe(struct trapframe *, void (*)(const char *, ...) __printflike(1, 2)); 237 238 void dump_switchframe(struct trapframe *, void (*)(const char *, ...) __printflike(1, 2)); 239 const char *strdisasm(vaddr_t, uint64_t); 240 241 #define DB_ELF_SYMBOLS 242 243 #elif defined(__arm__) 244 245 #include <arm/db_machdep.h> 246 247 #endif 248 249 #endif /* _AARCH64_DB_MACHDEP_H_ */ 250
Indexes created Tue Sep 23 21:09:50 GMT 2025