1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* Mach Operating System
* Copyright (c) 1991,1990,1989 Carnegie Mellon University
* All Rights Reserved.
*
* Permission to use, copy, modify and distribute this software and its
* documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie Mellon
* the rights to redistribute these changes.
*/
#if MACH_KDB
#if MACH_DEBUG
#include <mach/mach_types.h> /* vm_address_t */
#include <mach/std_types.h> /* pointer_t */
#include <mach/vm_param.h>
#include <vm/vm_map.h>
#include <vm/vm_kern.h>
#include <vm/vm_user.h>
#include <kern/host.h>
#include <kern/task.h>
#include <ddb/db_sym.h>
/*
* Loads a symbol table for an external file into the kernel debugger.
* The symbol table data is an array of characters. It is assumed that
* the caller and the kernel debugger agree on its format.
*/
kern_return_t
host_load_symbol_table(
host_t host,
task_t task,
char * name,
pointer_t symtab,
unsigned int symtab_count)
{
kern_return_t result;
vm_offset_t symtab_start;
vm_offset_t symtab_end;
vm_map_t map;
vm_map_copy_t symtab_copy_object;
if (host == HOST_NULL)
return (KERN_INVALID_ARGUMENT);
/*
* Copy the symbol table array into the kernel.
* We make a copy of the copy object, and clear
* the old one, so that returning error will not
* deallocate the data twice.
*/
symtab_copy_object = (vm_map_copy_t) symtab;
result = vm_map_copyout(
kernel_map,
&symtab_start,
vm_map_copy_copy(symtab_copy_object));
if (result != KERN_SUCCESS)
return (result);
symtab_end = symtab_start + symtab_count;
/*
* Add the symbol table.
* Do not keep a reference for the task map. XXX
*/
if (task == TASK_NULL)
map = VM_MAP_NULL;
else
map = task->map;
if (!X_db_sym_init((char *)symtab_start,
(char *)symtab_end,
name,
(char *)map))
{
/*
* Not enough room for symbol table - failure.
*/
(void) vm_deallocate(kernel_map,
symtab_start,
symtab_count);
return (KERN_FAILURE);
}
/*
* Wire down the symbol table
*/
(void) vm_map_pageable(kernel_map,
symtab_start,
round_page(symtab_end),
VM_PROT_READ|VM_PROT_WRITE,
TRUE, TRUE);
/*
* Discard the original copy object
*/
vm_map_copy_discard(symtab_copy_object);
return (KERN_SUCCESS);
}
#endif /* MACH_DEBUG */
#endif /* MACH_KDB */
|
