1 /* $NetBSD: db_machdep.h,v 1.18 2023/09/02 21:54:55 andvar Exp $ */ 2 3 /* 4 * Mach Operating System 5 * Copyright (c) 1991,1990 Carnegie Mellon University 6 * All Rights Reserved. 7 * 8 * Permission to use, copy, modify and distribute this software and its 9 * documentation is hereby granted, provided that both the copyright 10 * notice and this permission notice appear in all copies of the 11 * software, derivative works or modified versions, and any portions 12 * thereof, and that both notices appear in supporting documentation. 13 * 14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 16 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 17 * 18 * Carnegie Mellon requests users of this software to return to 19 * 20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU 21 * School of Computer Science 22 * Carnegie Mellon University 23 * Pittsburgh PA 15213-3890 24 * 25 * any improvements or extensions that they make and grant Carnegie Mellon 26 * the rights to redistribute these changes. 27 */ 28 29 #ifndef _SH3_DB_MACHDEP_H_ 30 #define _SH3_DB_MACHDEP_H_ 31 32 /* 33 * Machine-dependent defines for new kernel debugger. 34 */ 35 36 #include <sys/param.h> 37 #include <uvm/uvm_extern.h> 38 #include <sh3/exception.h> 39 #include <sh3/pcb.h> 40 41 typedef vaddr_t db_addr_t; /* address - unsigned */ 42 #define DDB_EXPR_FMT "l" /* expression is long */ 43 typedef long db_expr_t; /* expression - signed */ 44 45 typedef struct trapframe db_regs_t; 46 extern db_regs_t ddb_regs; /* register state */ 47 #define DDB_REGS (&ddb_regs) 48 49 #define PC_REGS(regs) ((regs)->tf_spc) 50 #define PC_ADVANCE(regs) ((regs)->tf_spc += BKPT_SIZE) 51 52 #define BKPT_ADDR(addr) (addr) /* breakpoint address */ 53 #define BKPT_INST 0xc3c3 /* breakpoint instruction */ 54 #define BKPT_SIZE 2 /* size of breakpoint inst */ 55 #define BKPT_SET(inst, addr) BKPT_INST 56 57 #define FIXUP_PC_AFTER_BREAK(regs) ((regs)->tf_spc -= BKPT_SIZE) 58 59 #define IS_BREAKPOINT_TRAP(type, code) \ 60 ((type) == EXPEVT_TRAPA && (code) == _SH_TRA_BREAK) 61 #define IS_WATCHPOINT_TRAP(type, code) (false) 62 63 #define inst_load(ins) 0 64 #define inst_store(ins) 0 65 66 /* access capability and access macros */ 67 68 #define DB_ACCESS_LEVEL 2 /* access any space */ 69 #define DB_CHECK_ACCESS(addr, size, task) \ 70 db_check_access(addr, size, task) 71 #define DB_PHYS_EQ(task1, addr1, task2, addr2) \ 72 db_phys_eq(task1, addr1, task2, addr2) 73 #define DB_VALID_KERN_ADDR(addr) \ 74 ((addr) >= VM_MIN_KERNEL_ADDRESS && \ 75 (addr) < VM_MAX_KERNEL_ADDRESS) 76 #define DB_VALID_ADDRESS(addr, user) \ 77 ((!(user) && DB_VALID_KERN_ADDR(addr)) || \ 78 ((user) && (addr) < VM_MAX_ADDRESS)) 79 80 /* macros for printing OS server dependent task name */ 81 82 #define DB_TASK_NAME(task) db_task_name(task) 83 #define DB_TASK_NAME_TITLE "COMMAND " 84 #define DB_TASK_NAME_LEN 23 85 #define DB_NULL_TASK_NAME "? " 86 87 /* 88 * Constants for KGDB. 89 */ 90 typedef long kgdb_reg_t; 91 #define KGDB_NUMREGS 59 92 #define KGDB_BUFLEN 1024 93 94 /* macro for checking if a thread has used floating-point */ 95 #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0) 96 97 int kdb_trap(int, int, db_regs_t *); 98 bool inst_call(int); 99 bool inst_return(int); 100 bool inst_trap_return(int); 101 102 /* 103 * We use ELF symbols in DDB. 104 * 105 */ 106 #define DB_ELF_SYMBOLS 107 108 /* 109 * We have machine-dependent commands. 110 */ 111 #define DB_MACHINE_COMMANDS 112 113 extern const char kgdb_devname[]; 114 115 #endif /* !_SH3_DB_MACHDEP_H_ */ 116