1 .\" $NetBSD: binpatch.8,v 1.7 2009/08/20 15:58:31 wiz Exp $
3 .\" Copyright (c) 1994 Christian E. Hopps
4 .\" All rights reserved.
6 .\" Redistribution and use in source and binary forms, with or without
7 .\" modification, are permitted provided that the following conditions
9 .\" 1. Redistributions of source code must retain the above copyright
10 .\" notice, this list of conditions and the following disclaimer.
11 .\" 2. Redistributions in binary form must reproduce the above copyright
12 .\" notice, this list of conditions and the following disclaimer in the
13 .\" documentation and/or other materials provided with the distribution.
14 .\" 3. All advertising materials mentioning features or use of this software
15 .\" must display the following acknowledgement:
16 .\" This product includes software developed by Christian E. Hopps.
17 .\" 4. The name of the author may not be used to endorse or promote products
18 .\" derived from this software without specific prior written permission
20 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
21 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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25 .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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29 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
36 .Nd "examine and or modify initialized data in an executable binary"
39 .Op Fl b | Fl w | Fl l | Fl d
46 .Op Fl b | Fl w | Fl l | Fl d
54 is used to modify or examine the data associated with a symbol in a binary
64 specify the size of the data to be modified or examined.
82 is scanned in search of the symbol
87 If the symbol is found the current data and address are printed.
91 flag has been given, the current data is replaced with that of
94 If the second form is used the address
98 flag is used as a direct address into the data section of the binary and
99 no symbol search is performed.
103 flag specifies an offset in
114 units from the given locator
120 to perform its described actions.
121 This might be useful to patch a member of array or structure.
125 flag is used to specify the starting address of a.out binary text segment.
126 Ignored for other binary executable formats.
133 command doesn't check if size of specified symbol is the same as the
144 command doesn't check if specified address or symbol is a patchable variable
145 and it might corrupt the specified executable binary.