| | 1 | /* |
| | 2 | * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved. |
| | 7 | * |
| | 8 | * This file contains Original Code and/or Modifications of Original Code |
| | 9 | * as defined in and that are subject to the Apple Public Source License |
| | 10 | * Version 2.0 (the 'License'). You may not use this file except in |
| | 11 | * compliance with the License. Please obtain a copy of the License at |
| | 12 | * http://www.opensource.apple.com/apsl/ and read it before using this |
| | 13 | * file. |
| | 14 | * |
| | 15 | * The Original Code and all software distributed under the License are |
| | 16 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 17 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 18 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 19 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
| | 20 | * Please see the License for the specific language governing rights and |
| | 21 | * limitations under the License. |
| | 22 | * |
| | 23 | * @APPLE_LICENSE_HEADER_END@ |
| | 24 | */ |
| | 25 | /* |
| | 26 | * @OSF_COPYRIGHT@ |
| | 27 | */ |
| | 28 | /* |
| | 29 | * Mach Operating System |
| | 30 | * Copyright (c) 1991,1990 Carnegie Mellon University |
| | 31 | * All Rights Reserved. |
| | 32 | * |
| | 33 | * Permission to use, copy, modify and distribute this software and its |
| | 34 | * documentation is hereby granted, provided that both the copyright |
| | 35 | * notice and this permission notice appear in all copies of the |
| | 36 | * software, derivative works or modified versions, and any portions |
| | 37 | * thereof, and that both notices appear in supporting documentation. |
| | 38 | * |
| | 39 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" |
| | 40 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR |
| | 41 | * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. |
| | 42 | * |
| | 43 | * Carnegie Mellon requests users of this software to return to |
| | 44 | * |
| | 45 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU |
| | 46 | * School of Computer Science |
| | 47 | * Carnegie Mellon University |
| | 48 | * Pittsburgh PA 15213-3890 |
| | 49 | * |
| | 50 | * any improvements or extensions that they make and grant Carnegie Mellon |
| | 51 | * the rights to redistribute these changes. |
| | 52 | */ |
| | 53 | /* |
| | 54 | */ |
| | 55 | |
| | 56 | #ifndef _I386_DB_MACHDEP_H_ |
| | 57 | #define _I386_DB_MACHDEP_H_ |
| | 58 | |
| | 59 | /* |
| | 60 | * Machine-dependent defines for new kernel debugger. |
| | 61 | */ |
| | 62 | |
| | 63 | #include <kern/kern_types.h> |
| | 64 | #include <mach/i386/vm_types.h> |
| | 65 | #include <mach/i386/vm_param.h> |
| | 66 | #include <i386/thread.h> /* for thread_status */ |
| | 67 | #include <i386/eflags.h> |
| | 68 | #include <i386/trap.h> |
| | 69 | |
| | 70 | typedef vm_offset_t db_addr_t; /* address - unsigned */ |
| | 71 | typedef int db_expr_t; /* expression - signed */ |
| | 72 | |
| | 73 | typedef struct i386_saved_state db_regs_t; |
| | 74 | db_regs_t ddb_regs; /* register state */ |
| | 75 | #define DDB_REGS (&ddb_regs) |
| | 76 | extern int db_active; /* ddb is active */ |
| | 77 | |
| | 78 | #define PC_REGS(regs) ((db_addr_t)(regs)->eip) |
| | 79 | |
| | 80 | #define BKPT_INST 0xcc /* breakpoint instruction */ |
| | 81 | #define BKPT_SIZE (1) /* size of breakpoint inst */ |
| | 82 | #define BKPT_SET(inst) (BKPT_INST) |
| | 83 | |
| | 84 | #define FIXUP_PC_AFTER_BREAK ddb_regs.eip -= 1; |
| | 85 | |
| | 86 | #define db_clear_single_step(regs) ((regs)->efl &= ~EFL_TF) |
| | 87 | #define db_set_single_step(regs) ((regs)->efl |= EFL_TF) |
| | 88 | |
| | 89 | #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3) |
| | 90 | #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) |
| | 91 | |
| | 92 | #define I_CALL 0xe8 |
| | 93 | #define I_CALLI 0xff |
| | 94 | #define I_RET 0xc3 |
| | 95 | #define I_IRET 0xcf |
| | 96 | |
| | 97 | #define inst_trap_return(ins) (((ins)&0xff) == I_IRET) |
| | 98 | #define inst_return(ins) (((ins)&0xff) == I_RET) |
| | 99 | #define inst_call(ins) (((ins)&0xff) == I_CALL || \ |
| | 100 | (((ins)&0xff) == I_CALLI && \ |
| | 101 | ((ins)&0x3800) == 0x1000)) |
| | 102 | |
| | 103 | int db_inst_load(unsigned long); |
| | 104 | int db_inst_store(unsigned long); |
| | 105 | |
| | 106 | /* access capability and access macros */ |
| | 107 | |
| | 108 | #define DB_ACCESS_LEVEL 2 /* access any space */ |
| | 109 | #define DB_CHECK_ACCESS(addr,size,task) \ |
| | 110 | db_check_access(addr,size,task) |
| | 111 | #define DB_PHYS_EQ(task1,addr1,task2,addr2) \ |
| | 112 | db_phys_eq(task1,addr1,task2,addr2) |
| | 113 | #define DB_VALID_KERN_ADDR(addr) \ |
| | 114 | ((addr) >= VM_MIN_KERNEL_ADDRESS && \ |
| | 115 | (addr) < VM_MAX_KERNEL_ADDRESS) |
| | 116 | #define DB_VALID_ADDRESS(addr,user) \ |
| | 117 | ((!(user) && DB_VALID_KERN_ADDR(addr)) || \ |
| | 118 | ((user) && (addr) < VM_MAX_ADDRESS)) |
| | 119 | |
| | 120 | /* |
| | 121 | * Given pointer to i386_saved_state, determine if it represents |
| | 122 | * a thread executing a) in user space, b) in the kernel, or c) |
| | 123 | * in a kernel-loaded task. Return true for cases a) and c). |
| | 124 | */ |
| | 125 | #define IS_USER_TRAP(regs, etext) ((((regs)->cs & 3) != 0) || \ |
| | 126 | (current_act() && \ |
| | 127 | current_act()->kernel_loaded && \ |
| | 128 | ((char *)(regs)->eip > (etext)))) |
| | 129 | |
| | 130 | extern boolean_t db_check_access( |
| | 131 | vm_offset_t addr, |
| | 132 | int size, |
| | 133 | task_t task); |
| | 134 | extern boolean_t db_phys_eq( |
| | 135 | task_t task1, |
| | 136 | vm_offset_t addr1, |
| | 137 | task_t task2, |
| | 138 | vm_offset_t addr2); |
| | 139 | extern db_addr_t db_disasm( |
| | 140 | db_addr_t loc, |
| | 141 | boolean_t altfmt, |
| | 142 | task_t task); |
| | 143 | extern void db_read_bytes( |
| | 144 | vm_offset_t addr, |
| | 145 | int size, |
| | 146 | char *data, |
| | 147 | task_t task); |
| | 148 | extern void db_write_bytes( |
| | 149 | vm_offset_t addr, |
| | 150 | int size, |
| | 151 | char *data, |
| | 152 | task_t task); |
| | 153 | extern void db_stack_trace_cmd( |
| | 154 | db_expr_t addr, |
| | 155 | boolean_t have_addr, |
| | 156 | db_expr_t count, |
| | 157 | char *modif); |
| | 158 | extern void db_reboot( |
| | 159 | db_expr_t addr, |
| | 160 | boolean_t have_addr, |
| | 161 | db_expr_t count, |
| | 162 | char *modif); |
| | 163 | |
| | 164 | /* macros for printing OS server dependent task name */ |
| | 165 | |
| | 166 | #define DB_TASK_NAME(task) db_task_name(task) |
| | 167 | #define DB_TASK_NAME_TITLE "COMMAND " |
| | 168 | #define DB_TASK_NAME_LEN 23 |
| | 169 | #define DB_NULL_TASK_NAME "? " |
| | 170 | |
| | 171 | extern void db_task_name( |
| | 172 | task_t task); |
| | 173 | |
| | 174 | /* macro for checking if a thread has used floating-point */ |
| | 175 | |
| | 176 | #define db_act_fp_used(act) (act && act->mact.pcb->ims.ifps) |
| | 177 | |
| | 178 | extern void db_tss_to_frame( |
| | 179 | int tss_sel, |
| | 180 | struct i386_saved_state *regs); |
| | 181 | extern int kdb_trap( |
| | 182 | int type, |
| | 183 | int code, |
| | 184 | struct i386_saved_state *regs); |
| | 185 | extern boolean_t db_trap_from_asm( |
| | 186 | struct i386_saved_state *regs); |
| | 187 | extern int dr6(void); |
| | 188 | extern void kdb_on( |
| | 189 | int cpu); |
| | 190 | extern void cnpollc( |
| | 191 | boolean_t on); |
| | 192 | |
| | 193 | #endif /* _I386_DB_MACHDEP_H_ */ |
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