1 /* $OpenBSD: db_machdep.h,v 1.28 2021/08/30 08:11:12 jasper Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Niklas Hallqvist. All rights reserved. 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 OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 24 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #ifndef _MACHINE_DB_MACHDEP_H_ 28 #define _MACHINE_DB_MACHDEP_H_ 29 30 #include <uvm/uvm_param.h> 31 32 struct opcode { 33 enum opc_fmt { OPC_PAL, OPC_RES, OPC_MEM, OPC_OP, OPC_BR } opc_fmt; 34 char *opc_name; 35 int opc_print; 36 }; 37 extern struct opcode opcode[]; 38 39 /* types the generic ddb module needs */ 40 typedef long db_expr_t; 41 typedef struct trapframe db_regs_t; 42 43 extern db_regs_t ddb_regs; 44 45 #define PC_REGS(regs) ((vaddr_t)(regs)->tf_regs[FRAME_PC]) 46 #define SET_PC_REGS(regs, value) (regs)->tf_regs[FRAME_PC] = (unsigned long)(value) 47 48 /* Breakpoint related definitions */ 49 #define BKPT_INST 0x00000080 /* call_pal bpt */ 50 #define BKPT_SIZE sizeof(int) 51 #define BKPT_SET(inst) BKPT_INST 52 53 #define IS_BREAKPOINT_TRAP(type, code) \ 54 ((type) == ALPHA_KENTRY_IF && (code) == ALPHA_IF_CODE_BPT) 55 #ifdef notyet 56 #define IS_WATCHPOINT_TRAP(type, code) ((type) == ALPHA_KENTRY_MM) 57 #else 58 #define IS_WATCHPOINT_TRAP(type, code) 0 59 #endif 60 61 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_regs[FRAME_PC] -= sizeof(int)) 62 63 #define SOFTWARE_SSTEP 64 #define DB_VALID_BREAKPOINT(addr) db_valid_breakpoint(addr) 65 66 /* Hack to skip GCC "unused" warnings. */ 67 #define inst_trap_return(ins) ((ins) & 0) /* XXX */ 68 #define inst_return(ins) (((ins) & 0xfc000000) == 0x68000000) 69 70 int alpha_debug(unsigned long, unsigned long, unsigned long, 71 unsigned long, struct trapframe *); 72 vaddr_t db_branch_taken(int, vaddr_t, db_regs_t *); 73 int db_inst_branch(int); 74 int db_inst_call(int); 75 int db_inst_load(int); 76 int db_inst_return(int); 77 int db_inst_trap_return(int); 78 int db_inst_unconditional_flow_transfer(int); 79 u_long db_register_value(db_regs_t *, int); 80 int db_valid_breakpoint(vaddr_t); 81 int ddb_trap(unsigned long, unsigned long, unsigned long, 82 unsigned long, struct trapframe *); 83 int db_ktrap(int, int, db_regs_t *); 84 vaddr_t next_instr_address(vaddr_t, int); 85 86 #if 1 87 /* Backwards compatibility until we switch all archs to use the db_ prefix */ 88 #define branch_taken(ins, pc, fun, regs) db_branch_taken((ins), (pc), (regs)) 89 #define inst_branch db_inst_branch 90 #define inst_call db_inst_call 91 #endif 92 93 #define DB_MACHINE_COMMANDS 94 95 #endif /* _MACHINE_DB_MACHDEP_H_ */ 96