1 /* Copyright (C) 2005, 2008 Red Hat, Inc.
2 This file is part of Red Hat elfutils.
3 Written by Ulrich Drepper <drepper@redhat.com>, 2007.
4
5 Red Hat elfutils is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by the
7 Free Software Foundation; version 2 of the License.
8
9 Red Hat elfutils is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 General Public License for more details.
13
14 You should have received a copy of the GNU General Public License along
15 with Red Hat elfutils; if not, write to the Free Software Foundation,
16 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
17
18 Red Hat elfutils is an included package of the Open Invention Network.
19 An included package of the Open Invention Network is a package for which
20 Open Invention Network licensees cross-license their patents. No patent
21 license is granted, either expressly or impliedly, by designation as an
22 included package. Should you wish to participate in the Open Invention
23 Network licensing program, please visit www.openinventionnetwork.com
24 <http://www.openinventionnetwork.com>. */
25
26 #ifdef HAVE_CONFIG_H
27 # include <config.h>
28 #endif
29
30 #include <string.h>
31
32 #include "libasmP.h"
33
34
35 struct buffer
36 {
37 char *buf;
38 size_t len;
39 };
40
41
42 static int
buffer_cb(char * str,size_t len,void * arg)43 buffer_cb (char *str, size_t len, void *arg)
44 {
45 struct buffer *buffer = (struct buffer *) arg;
46
47 if (len > buffer->len)
48 /* Return additional needed space. */
49 return len - buffer->len;
50
51 buffer->buf = mempcpy (buffer->buf, str, len);
52 buffer->len = len;
53
54 return 0;
55 }
56
57
58 int
disasm_str(DisasmCtx_t * ctx,const uint8_t ** startp,const uint8_t * end,GElf_Addr addr,const char * fmt,char ** bufp,size_t len,void * symcbarg)59 disasm_str (DisasmCtx_t *ctx, const uint8_t **startp, const uint8_t *end,
60 GElf_Addr addr, const char *fmt, char **bufp, size_t len,
61 void *symcbarg)
62 {
63 struct buffer buffer = { .buf = *bufp, .len = len };
64
65 int res = INTUSE(disasm_cb) (ctx, startp, end, addr, fmt, buffer_cb, &buffer,
66 symcbarg);
67 *bufp = buffer.buf;
68 return res;
69 }
70