db_machdep.h revision 1.2.4.2
1 /* 2 * Mach Operating System 3 * Copyright (c) 1991,1990 Carnegie Mellon University 4 * All Rights Reserved. 5 * 6 * Permission to use, copy, modify and distribute this software and its 7 * documentation is hereby granted, provided that both the copyright 8 * notice and this permission notice appear in all copies of the 9 * software, derivative works or modified versions, and any portions 10 * thereof, and that both notices appear in supporting documentation. 11 * 12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR 14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. 15 * 16 * Carnegie Mellon requests users of this software to return to 17 * 18 * Software Distribution Coordinator or Software.Distribution (at) CS.CMU.EDU 19 * School of Computer Science 20 * Carnegie Mellon University 21 * Pittsburgh PA 15213-3890 22 * 23 * any improvements or extensions that they make and grant Carnegie Mellon 24 * the rights to redistribute these changes. 25 * 26 * $Id: db_machdep.h,v 1.2.4.2 1993/11/13 06:16:20 mycroft Exp $ 27 */ 28 /* 29 * HISTORY 30 * $Log: db_machdep.h,v $ 31 * Revision 1.2.4.2 1993/11/13 06:16:20 mycroft 32 * Test for watchpoint trap by inspecting the saved image of %dr6. 33 * 34 * Revision 1.2.4.1 1993/10/16 02:32:06 mycroft 35 * VM_MIN_KERNEL_ADDRESS --> VM_MAX_ADDRESS 36 * 37 * Revision 1.2 1993/05/22 08:00:12 cgd 38 * add rcsids to everything and clean up headers 39 * 40 * Revision 1.1.1.1 1993/03/21 09:45:47 cgd 41 * initial import of 386bsd-0.1 sources 42 * 43 * Revision 2.8 92/02/19 15:07:56 elf 44 * Added db_thread_fp_used. 45 * [92/02/19 rpd] 46 * 47 * Revision 2.7 91/10/09 16:06:28 af 48 * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh 49 * Added access and task name macros. 50 * [91/08/29 tak] 51 * 52 * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh 53 * Added access and task name macros. 54 * [91/08/29 tak] 55 * 56 * Revision 2.6 91/05/14 16:05:58 mrt 57 * Correcting copyright 58 * 59 * Revision 2.5 91/02/05 17:11:17 mrt 60 * Changed to new Mach copyright 61 * [91/02/01 17:31:24 mrt] 62 * 63 * Revision 2.4 91/01/08 15:10:16 rpd 64 * Added dummy inst_load/inst_store macros. 65 * [90/12/11 rpd] 66 * 67 * Revision 2.3 90/10/25 14:44:49 rwd 68 * Added watchpoint support. 69 * [90/10/18 rpd] 70 * 71 * Revision 2.2 90/08/27 21:56:15 dbg 72 * Created. 73 * [90/07/25 dbg] 74 * 75 */ 76 77 #ifndef _I386_DB_MACHDEP_H_ 78 #define _I386_DB_MACHDEP_H_ 79 80 /* 81 * Machine-dependent defines for new kernel debugger. 82 */ 83 84 85 /* #include <mach/i386/vm_types.h> */ 86 /* #include <mach/i386/vm_param.h> */ 87 #include <vm/vm_prot.h> 88 #include <vm/vm_param.h> 89 #include <vm/vm_inherit.h> 90 #include <vm/lock.h> 91 /* #include <i386/thread.h> */ /* for thread_status */ 92 #include <machine/frame.h> /* for struct trapframe */ 93 /* #include <i386/eflags.h> */ 94 #include <machine/eflags.h> /* from Mach... */ 95 /* #include <i386/trap.h> */ 96 #include <machine/trap.h> 97 98 #define i386_saved_state trapframe 99 /* end of mangling */ 100 101 typedef vm_offset_t db_addr_t; /* address - unsigned */ 102 typedef int db_expr_t; /* expression - signed */ 103 104 typedef struct i386_saved_state db_regs_t; 105 db_regs_t ddb_regs; /* register state */ 106 #define DDB_REGS (&ddb_regs) 107 108 #define PC_REGS(regs) ((db_addr_t)(regs)->tf_eip) 109 110 #define BKPT_INST 0xcc /* breakpoint instruction */ 111 #define BKPT_SIZE (1) /* size of breakpoint inst */ 112 #define BKPT_SET(inst) (BKPT_INST) 113 114 #define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1; 115 116 #define db_clear_single_step(regs) ((regs)->tf_eflags &= ~EFL_TF) 117 #define db_set_single_step(regs) ((regs)->tf_eflags |= EFL_TF) 118 119 #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) 120 #define IS_WATCHPOINT_TRAP(type, code) ((code) & 15) /* image of %dr6 */ 121 122 #define I_CALL 0xe8 123 #define I_CALLI 0xff 124 #define I_RET 0xc3 125 #define I_IRET 0xcf 126 127 #define inst_trap_return(ins) (((ins)&0xff) == I_IRET) 128 #define inst_return(ins) (((ins)&0xff) == I_RET) 129 #define inst_call(ins) (((ins)&0xff) == I_CALL || \ 130 (((ins)&0xff) == I_CALLI && \ 131 ((ins)&0x3800) == 0x1000)) 132 #define inst_load(ins) 0 133 #define inst_store(ins) 0 134 135 /* access capability and access macros */ 136 137 #define DB_ACCESS_LEVEL 2 /* access any space */ 138 #define DB_CHECK_ACCESS(addr,size,task) \ 139 db_check_access(addr,size,task) 140 #define DB_PHYS_EQ(task1,addr1,task2,addr2) \ 141 db_phys_eq(task1,addr1,task2,addr2) 142 #define DB_VALID_KERN_ADDR(addr) \ 143 ((addr) >= VM_MIN_KERNEL_ADDRESS && \ 144 (addr) < VM_MAX_KERNEL_ADDRESS) 145 #define DB_VALID_ADDRESS(addr,user) \ 146 ((!(user) && DB_VALID_KERN_ADDR(addr)) || \ 147 ((user) && (addr) < VM_MAX_ADDRESS)) 148 149 boolean_t db_check_access(/* vm_offset_t, int, task_t */); 150 boolean_t db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */); 151 152 /* macros for printing OS server dependent task name */ 153 154 #define DB_TASK_NAME(task) db_task_name(task) 155 #define DB_TASK_NAME_TITLE "COMMAND " 156 #define DB_TASK_NAME_LEN 23 157 #define DB_NULL_TASK_NAME "? " 158 159 void db_task_name(/* task_t */); 160 161 /* macro for checking if a thread has used floating-point */ 162 163 #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0) 164 165 #endif /* _I386_DB_MACHDEP_H_ */ 166
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