1 /* $OpenBSD: db_machdep.h,v 1.21 2021/08/30 08:11:12 jasper Exp $ */ 2 3 /* 4 * Copyright (c) 1998-2003 Opsycon AB (www.opsycon.se) 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #ifndef _MIPS64_DB_MACHDEP_H_ 30 #define _MIPS64_DB_MACHDEP_H_ 31 32 #include <machine/frame.h> 33 #include <machine/trap.h> 34 #include <uvm/uvm_param.h> 35 36 #define DB_MACHINE_COMMANDS /* We have machine specific commands */ 37 38 typedef struct trapframe db_regs_t; 39 extern db_regs_t ddb_regs; 40 41 typedef long db_expr_t; 42 43 #define SOFTWARE_SSTEP /* Need software single step */ 44 #define SOFTWARE_SSTEP_EMUL /* next_instr_address() emulates 100% */ 45 vaddr_t next_instr_address(vaddr_t, int); 46 #define BKPT_SIZE (4) 47 #define BKPT_SET(ins) (BREAK_DDB) 48 #define DB_VALID_BREAKPOINT(addr) (((addr) & 3) == 0) 49 50 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BREAK) 51 #define IS_WATCHPOINT_TRAP(type, code) (0) /* XXX mips3 watchpoint */ 52 53 #define PC_REGS(regs) ((vaddr_t)(regs)->pc) 54 #define SET_PC_REGS(regs, value) (regs)->pc = (register_t)(value) 55 56 /* 57 * Test of instructions to see class. 58 */ 59 #define inst_branch(i) (classify_insn(i) == INSNCLASS_BRANCH) 60 #define inst_trap_return(i) ((i) & 0) 61 #define inst_call(i) (classify_insn(i) == INSNCLASS_CALL) 62 #define inst_return(i) ((i) == 0x03e00008) 63 64 void db_machine_init(void); 65 66 int db_enter_ddb(void); 67 void db_startcpu(int); 68 void db_stopcpu(int); 69 70 int dbmd_print_insn(uint32_t, vaddr_t, int (*)(const char *, ...)); 71 72 #define DDB_STATE_NOT_RUNNING 0 73 #define DDB_STATE_RUNNING 1 74 #define DDB_STATE_EXITING 2 75 76 #endif /* !_MIPS64_DB_MACHDEP_H_ */ 77