/* $OpenBSD: db_machdep.h,v 1.23 2022/02/15 00:27:11 jsg Exp $ */ /* * Copyright (c) 1998-2005 Michael Shalayeff * All rights reserved. * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER IN * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #ifndef _MACHINE_DB_MACHDEP_H_ #define _MACHINE_DB_MACHDEP_H_ #include /* types the generic ddb module needs */ typedef long db_expr_t; typedef struct trapframe db_regs_t; extern db_regs_t ddb_regs; #define PC_REGS(regs) ((vaddr_t)(regs)->tf_iioq_head) #define SET_PC_REGS(regs, value) \ do { \ (regs)->tf_iioq_tail = 4 + \ ((regs)->tf_iioq_head = (value)); \ } while (0) /* Breakpoint related definitions */ #define BKPT_INST 0x00010000 /* break 0,8 */ #define BKPT_SIZE sizeof(int) #define BKPT_SET(inst) BKPT_INST #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_IBREAK) #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_DBREAK) #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_iioq_head -= sizeof(int)) #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr) static __inline int inst_call(u_int ins) { return (ins & 0xfc00e000) == 0xe8000000 || (ins & 0xfc00e000) == 0xe8004000 || (ins & 0xfc000000) == 0xe4000000; } static __inline int inst_branch(u_int ins) { return (ins & 0xf0000000) == 0xe0000000 || (ins & 0xf0000000) == 0xc0000000 || (ins & 0xf0000000) == 0xa0000000 || (ins & 0xf0000000) == 0x80000000; } static __inline int inst_return(u_int ins) { return (ins & 0xfc00e000) == 0xe800c000 || (ins & 0xfc000000) == 0xe0000000; } static __inline int inst_trap_return(u_int ins) { return (ins & 0xfc001fff) == 0x00000c00 || /* rfi */ (ins & 0xfc001fff) == 0x00000ca0; /* rfir */ } #if 0 #define db_clear_single_step(r) ((r)->tf_flags &= ~(PSL_Z)) #define db_set_single_step(r) ((r)->tf_flags |= (PSL_Z)) #else #define SOFTWARE_SSTEP 1 #define SOFTWARE_SSTEP_EMUL 1 static __inline vaddr_t next_instr_address(vaddr_t addr, int b) { return (addr + 4); } #define branch_taken(ins,pc,f,regs) branch_taken1(ins, pc, regs) static __inline vaddr_t branch_taken1(int ins, vaddr_t pc, db_regs_t *regs) { return (pc); } #endif int db_valid_breakpoint(vaddr_t); int db_ktrap(int, int, db_regs_t *); #endif /* _MACHINE_DB_MACHDEP_H_ */