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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@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 | /* | |
27 | * HISTORY | |
28 | * $Log: db_machdep.h,v $ | |
29 | * Revision 2.8 92/02/19 15:07:56 elf | |
30 | * Added db_thread_fp_used. | |
31 | * [92/02/19 rpd] | |
32 | * | |
33 | * Revision 2.7 91/10/09 16:06:28 af | |
34 | * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh | |
35 | * Added access and task name macros. | |
36 | * [91/08/29 tak] | |
37 | * | |
38 | * Revision 2.6.3.1 91/10/05 13:10:32 jeffreyh | |
39 | * Added access and task name macros. | |
40 | * [91/08/29 tak] | |
41 | * | |
42 | * Revision 2.6 91/05/14 16:05:58 mrt | |
43 | * Correcting copyright | |
44 | * | |
45 | * Revision 2.5 91/02/05 17:11:17 mrt | |
46 | * Changed to new Mach copyright | |
47 | * [91/02/01 17:31:24 mrt] | |
48 | * | |
49 | * Revision 2.4 91/01/08 15:10:16 rpd | |
50 | * Added dummy inst_load/inst_store macros. | |
51 | * [90/12/11 rpd] | |
52 | * | |
53 | * Revision 2.3 90/10/25 14:44:49 rwd | |
54 | * Added watchpoint support. | |
55 | * [90/10/18 rpd] | |
56 | * | |
57 | * Revision 2.2 90/08/27 21:56:15 dbg | |
58 | * Created. | |
59 | * [90/07/25 dbg] | |
60 | * | |
61 | */ | |
62 | ||
63 | #ifndef _I386_DB_MACHDEP_H_ | |
64 | #define _I386_DB_MACHDEP_H_ | |
65 | ||
66 | /* | |
67 | * Machine-dependent defines for new kernel debugger. | |
68 | */ | |
69 | ||
70 | ||
71 | /* #include <mach/i386/vm_types.h> */ | |
72 | /* #include <mach/i386/vm_param.h> */ | |
73 | #include <vm/vm_prot.h> | |
74 | #include <vm/vm_param.h> | |
75 | #include <vm/vm_inherit.h> | |
76 | #include <vm/lock.h> | |
77 | /* #include <i386/thread.h> */ /* for thread_status */ | |
78 | #include <machine/frame.h> /* for struct trapframe */ | |
79 | /* #include <i386/eflags.h> */ | |
80 | #include <machine/eflags.h> /* from Mach... */ | |
81 | /* #include <i386/trap.h> */ | |
82 | #include <machine/trap.h> | |
83 | ||
84 | #define i386_saved_state trapframe | |
85 | /* end of mangling */ | |
86 | ||
87 | typedef vm_offset_t db_addr_t; /* address - unsigned */ | |
88 | typedef int db_expr_t; /* expression - signed */ | |
89 | ||
90 | typedef struct i386_saved_state db_regs_t; | |
91 | db_regs_t ddb_regs; /* register state */ | |
92 | #define DDB_REGS (&ddb_regs) | |
93 | ||
94 | #define PC_REGS(regs) ((db_addr_t)(regs)->tf_eip) | |
95 | ||
96 | #define BKPT_INST 0xcc /* breakpoint instruction */ | |
97 | #define BKPT_SIZE (1) /* size of breakpoint inst */ | |
98 | #define BKPT_SET(inst) (BKPT_INST) | |
99 | ||
100 | #define FIXUP_PC_AFTER_BREAK ddb_regs.tf_eip -= 1; | |
101 | ||
102 | #define db_clear_single_step(regs) ((regs)->tf_eflags &= ~EFL_TF) | |
103 | #define db_set_single_step(regs) ((regs)->tf_eflags |= EFL_TF) | |
104 | ||
105 | /* #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_INT3) */ | |
106 | /* #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_WATCHPOINT) */ | |
107 | /* using the 386bsd values, rather than the Mach ones: */ | |
108 | #define IS_BREAKPOINT_TRAP(type, code) ((type) == T_BPTFLT) | |
109 | #define IS_WATCHPOINT_TRAP(type, code) ((type) == T_KDBTRAP) | |
110 | ||
111 | #define I_CALL 0xe8 | |
112 | #define I_CALLI 0xff | |
113 | #define I_RET 0xc3 | |
114 | #define I_IRET 0xcf | |
115 | ||
116 | #define inst_trap_return(ins) (((ins)&0xff) == I_IRET) | |
117 | #define inst_return(ins) (((ins)&0xff) == I_RET) | |
118 | #define inst_call(ins) (((ins)&0xff) == I_CALL || \ | |
119 | (((ins)&0xff) == I_CALLI && \ | |
120 | ((ins)&0x3800) == 0x1000)) | |
121 | #define inst_load(ins) 0 | |
122 | #define inst_store(ins) 0 | |
123 | ||
124 | /* access capability and access macros */ | |
125 | ||
126 | #define DB_ACCESS_LEVEL 2 /* access any space */ | |
127 | #define DB_CHECK_ACCESS(addr,size,task) \ | |
128 | db_check_access(addr,size,task) | |
129 | #define DB_PHYS_EQ(task1,addr1,task2,addr2) \ | |
130 | db_phys_eq(task1,addr1,task2,addr2) | |
131 | #define DB_VALID_KERN_ADDR(addr) \ | |
132 | ((addr) >= VM_MIN_KERNEL_ADDRESS && \ | |
133 | (addr) < VM_MAX_KERNEL_ADDRESS) | |
134 | #define DB_VALID_ADDRESS(addr,user) \ | |
135 | ((!(user) && DB_VALID_KERN_ADDR(addr)) || \ | |
136 | ((user) && (addr) < VM_MIN_KERNEL_ADDRESS)) | |
137 | ||
138 | boolean_t db_check_access(/* vm_offset_t, int, task_t */); | |
139 | boolean_t db_phys_eq(/* task_t, vm_offset_t, task_t, vm_offset_t */); | |
140 | ||
141 | /* macros for printing OS server dependent task name */ | |
142 | ||
143 | #define DB_TASK_NAME(task) db_task_name(task) | |
144 | #define DB_TASK_NAME_TITLE "COMMAND " | |
145 | #define DB_TASK_NAME_LEN 23 | |
146 | #define DB_NULL_TASK_NAME "? " | |
147 | ||
148 | void db_task_name(/* task_t */); | |
149 | ||
150 | /* macro for checking if a thread has used floating-point */ | |
151 | ||
152 | #define db_thread_fp_used(thread) ((thread)->pcb->ims.ifps != 0) | |
153 | ||
154 | #endif /* _I386_DB_MACHDEP_H_ */ |