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1.1 root 1: /*
2: * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22: /*
23: * @OSF_COPYRIGHT@
24: */
25: /*
26: * Mach Operating System
27: * Copyright (c) 1991,1990,1989 Carnegie Mellon University
28: * All Rights Reserved.
29: *
30: * Permission to use, copy, modify and distribute this software and its
31: * documentation is hereby granted, provided that both the copyright
32: * notice and this permission notice appear in all copies of the
33: * software, derivative works or modified versions, and any portions
34: * thereof, and that both notices appear in supporting documentation.
35: *
36: * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
37: * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
38: * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
39: *
40: * Carnegie Mellon requests users of this software to return to
41: *
42: * Software Distribution Coordinator or [email protected]
43: * School of Computer Science
44: * Carnegie Mellon University
45: * Pittsburgh PA 15213-3890
46: *
47: * any improvements or extensions that they make and grant Carnegie Mellon
48: * the rights to redistribute these changes.
49: */
50:
51: /*
52: */
53: #include <mach_kdb.h>
54: #include <mach_debug.h>
55:
56: #include <mach/vm_param.h>
57: #include <mach/std_types.h>
58: #include <mach/mach_types.h>
59: #include <mach/mach_host_server.h> /* prototype */
60:
61: #if MACH_KDB && MACH_DEBUG
62: #include <vm/vm_map.h>
63: #include <vm/vm_kern.h>
64: #include <kern/host.h>
65: #include <kern/task.h>
66: #include <ddb/db_sym.h>
67: #include <vm/vm_user.h> /* For vm_deallocate() */
68: #endif
69:
70: /*
71: * Loads a symbol table for an external file into the kernel debugger.
72: * The symbol table data is an array of characters. It is assumed that
73: * the caller and the kernel debugger agree on its format.
74: */
75: kern_return_t
76: host_load_symbol_table(
77: host_t host,
78: task_t task,
79: char * name,
80: pointer_t symtab,
81: mach_msg_type_number_t symtab_count)
82: {
83: #if !MACH_DEBUG || !MACH_KDB
84: return KERN_FAILURE;
85: #else
86: kern_return_t result;
87: vm_offset_t symtab_start;
88: vm_offset_t symtab_end;
89: vm_map_t map;
90: vm_map_copy_t symtab_copy_object;
91:
92: if (host == HOST_NULL)
93: return (KERN_INVALID_ARGUMENT);
94:
95: /*
96: * Copy the symbol table array into the kernel.
97: * We make a copy of the copy object, and clear
98: * the old one, so that returning error will not
99: * deallocate the data twice.
100: */
101: symtab_copy_object = (vm_map_copy_t) symtab;
102: result = vm_map_copyout(
103: kernel_map,
104: &symtab_start,
105: vm_map_copy_copy(symtab_copy_object));
106: if (result != KERN_SUCCESS)
107: return (result);
108:
109: symtab_end = symtab_start + symtab_count;
110:
111: /*
112: * Add the symbol table.
113: * Do not keep a reference for the task map. XXX
114: */
115: if (task == TASK_NULL)
116: map = VM_MAP_NULL;
117: else
118: map = task->map;
119: if (!X_db_sym_init((char *)symtab_start,
120: (char *)symtab_end,
121: name,
122: (char *)map))
123: {
124: /*
125: * Not enough room for symbol table - failure.
126: */
127: (void) vm_deallocate(kernel_map,
128: symtab_start,
129: symtab_count);
130: return (KERN_FAILURE);
131: }
132:
133: /*
134: * Wire down the symbol table
135: */
136: (void) vm_map_wire(kernel_map,
137: symtab_start,
138: round_page(symtab_end),
139: VM_PROT_READ|VM_PROT_WRITE, FALSE);
140:
141: /*
142: * Discard the original copy object
143: */
144: vm_map_copy_discard(symtab_copy_object);
145:
146: return (KERN_SUCCESS);
147: #endif /* MACH_DEBUG && MACH_KDB */
148: }
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