/* $NetBSD: db_machdep.h,v 1.16 2021/10/31 22:06:32 skrll Exp $ */ /*- * Copyright (c) 2014 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Matt Thomas of 3am Software Foundry. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /*- * Copyright (c) 2014 Andrew Turner * Copyright (c) 2014-2015 The FreeBSD Foundation * All rights reserved. * * This software was developed by Semihalf under * sponsorship from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * $FreeBSD: head/sys/arm64/include/db_machdep.h 316001 2017-03-26 18:46:35Z bde $ */ #ifndef _AARCH64_DB_MACHDEP_H_ #define _AARCH64_DB_MACHDEP_H_ #ifdef __aarch64__ #include #include #include #include #include typedef long long int db_expr_t; #define DDB_EXPR_FMT "ll" typedef uintptr_t db_addr_t; #define BKPT_ADDR(addr) (addr) #define BKPT_SIZE 4 #ifdef __AARCH64EB__ #define BKPT_INSN 0x000020d4 /* brk #0 */ #else #define BKPT_INSN 0xd4200000 /* brk #0 */ #endif #define BKPT_SET(insn, addr) (BKPT_INSN) typedef struct trapframe db_regs_t; extern db_regs_t ddb_regs; #define DDB_REGS (&ddb_regs) #define PC_REGS(tf) ((tf)->tf_pc) int kdb_trap(int, struct trapframe *); #define DB_TRAP_UNKNOWN 0 #define DB_TRAP_BREAKPOINT 1 #define DB_TRAP_BKPT_INSN 2 #define DB_TRAP_WATCHPOINT 3 #define DB_TRAP_SW_STEP 4 #define IS_BREAKPOINT_TRAP(type, code) \ ((type) == DB_TRAP_BKPT_INSN) #define IS_WATCHPOINT_TRAP(type, code) \ ((type) == DB_TRAP_BREAKPOINT || (type) == DB_TRAP_WATCHPOINT) static inline bool inst_return(db_expr_t insn) { LE32TOH(insn); return ((insn & 0xfffffc1f) == 0xd65f0000); /* ret xN */ } static inline bool inst_trap_return(db_expr_t insn) { LE32TOH(insn); return insn == 0xd69f03e0; /* eret */ } static inline bool inst_call(db_expr_t insn) { LE32TOH(insn); return ((insn & 0xfc000000) == 0x94000000) /* bl */ || ((insn & 0xfffffc1f) == 0xd63f0000); /* blr */ } static inline bool inst_load(db_expr_t insn) { LE32TOH(insn); return ((insn & 0xffe00c00) == 0xb8800000) || /* ldursw */ /* ldrsw imm{pre,post}idx */ ((insn & 0xffe00400) == 0xb8800400) || ((insn & 0xffc00c00) == 0xb8800800) || /* ldrsw reg,ldtrsw */ ((insn & 0xffc00000) == 0xb9800000) || /* ldrsw immunsign */ ((insn & 0xffc00000) == 0x39400000) || /* ldrb immunsign */ ((insn & 0xff000000) == 0x98000000) || /* ldrsw literal */ /* ldpsw {pre,post}idx */ ((insn & 0xfec00000) == 0x68c00000) || /* ldrh immunsign,ldpsw signed */ ((insn & 0xefc00000) == 0x69400000) || ((insn & 0xbfff0000) == 0x887f0000) || /* ldaxp,ldxp */ ((insn & 0xbfc00000) == 0xb9400000) || /* ldr immunsign */ ((insn & 0xbfa00c00) == 0x38800000) || /* ldursh,ldursb */ /* ldrsh imm{pre,post}idx,ldrsb imm{pre,post}idx */ ((insn & 0xbfa00400) == 0x38800400) || /* ldrs[bh] reg,ldtrs[bh] */ ((insn & 0xbf800c00) == 0x38800800) || /* ldrsh immunsign,ldrsb immunsign */ ((insn & 0xbf800000) == 0x39800000) || ((insn & 0xbf000000) == 0x18000000) || /* ldr literal */ /* ldp {pre,post}idx,ldp signed,ldnp */ ((insn & 0x7e400000) == 0x28400000) || ((insn & 0x3ffffc00) == 0x085f7c00) || /* ldxr,ldxr[bh] */ ((insn & 0x3fe00c00) == 0x38400000) || /* ldur,ldur[bh] */ /* ldr imm{pre,post}idx,ldr[bh]_imm{pre,post}idx */ ((insn & 0x3fe00400) == 0x38400400) || /* ldtr,ldtr[bh],ldr_reg,ldr[bh]_reg */ ((insn & 0x3fc00c00) == 0x38400800) || /* ldaxr,ldaxr[bh],ldar,ldar[bh] */ ((insn & 0x3f7ffc00) == 0x085ffc00); } static inline bool inst_store(db_expr_t insn) { LE32TOH(insn); return ((insn & 0xbfe00000) == 0x88200000) || /* stlxp,stxp */ /* stp {pre,post}idx,stp signed,stnp */ ((insn & 0x7e400000) == 0x28000000) || ((insn & 0x3ffffc00) == 0x089ffc00) || /* stlr,stlr[bh] */ /* stlxr,stlxr[bh],stxr,stxr[bh] */ ((insn & 0x3fe07c00) == 0x08007c00) || ((insn & 0x3fe00c00) == 0x38000000) || /* stur,stur[bh] */ /* str imm{pre,post}idx,str[bh] imm{pre,post}idx */ ((insn & 0x3fe00400) == 0x38000400) || /* str reg,str[bh] reg,sttr,sttr[bh] */ ((insn & 0x3fc00c00) == 0x38000800) || /* str immunsign,str[bh] immunsign */ ((insn & 0x3fc00000) == 0x39000000); } #define SOFTWARE_SSTEP #ifdef SOFTWARE_SSTEP static inline bool inst_branch(db_expr_t insn) { LE32TOH(insn); return ((insn & 0xff000010) == 0x54000000) || /* b.cond */ ((insn & 0xfc000000) == 0x14000000) || /* b imm */ ((insn & 0xfffffc1f) == 0xd61f0000) || /* br */ ((insn & 0x7f000000) == 0x35000000) || /* cbnz */ ((insn & 0x7f000000) == 0x34000000) || /* cbz */ ((insn & 0x7f000000) == 0x37000000) || /* tbnz */ ((insn & 0x7f000000) == 0x36000000); /* tbz */ } bool db_inst_unconditional_flow_transfer(db_expr_t); db_addr_t db_branch_taken(db_expr_t, db_addr_t, db_regs_t *); #define next_instr_address(pc, bd) \ ((bd) ? (pc) : ((pc) + 4)) #define branch_taken(ins, pc, regs) \ db_branch_taken((ins), (pc), (regs)) #define inst_unconditional_flow_transfer(ins) \ db_inst_unconditional_flow_transfer(ins) #endif /* SOFTWARE_SSTEP */ #define DB_MACHINE_COMMANDS #ifdef _KERNEL void db_pteinfo(vaddr_t, void (*)(const char *, ...) __printflike(1, 2)); void db_pte_print(pt_entry_t, int, void (*)(const char *, ...) __printflike(1, 2)); void db_ttbrdump(bool, vaddr_t, void (*pr)(const char *, ...) __printflike(1, 2)); void db_machdep_cpu_init(void); void db_machdep_init(struct cpu_info * const); /* hardware breakpoint/watchpoint functions */ void aarch64_breakpoint_set(int, vaddr_t); void aarch64_watchpoint_set(int, vaddr_t, u_int, u_int); #define WATCHPOINT_ACCESS_LOAD 0x01 #define WATCHPOINT_ACCESS_STORE 0x02 #define WATCHPOINT_ACCESS_LOADSTORE 0x03 #define WATCHPOINT_ACCESS_MASK 0x03 #endif void dump_trapframe(struct trapframe *, void (*)(const char *, ...) __printflike(1, 2)); void dump_switchframe(struct trapframe *, void (*)(const char *, ...) __printflike(1, 2)); const char *strdisasm(vaddr_t, uint64_t); #define DB_ELF_SYMBOLS #elif defined(__arm__) #include #endif #endif /* _AARCH64_DB_MACHDEP_H_ */