1 /* Add string to a section.
2 Copyright (C) 2002 Red Hat, Inc.
3 This file is part of Red Hat elfutils.
4 Written by Ulrich Drepper <drepper@redhat.com>, 2002.
5
6 Red Hat elfutils is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by the
8 Free Software Foundation; version 2 of the License.
9
10 Red Hat elfutils is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
14
15 You should have received a copy of the GNU General Public License along
16 with Red Hat elfutils; if not, write to the Free Software Foundation,
17 Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA.
18
19 Red Hat elfutils is an included package of the Open Invention Network.
20 An included package of the Open Invention Network is a package for which
21 Open Invention Network licensees cross-license their patents. No patent
22 license is granted, either expressly or impliedly, by designation as an
23 included package. Should you wish to participate in the Open Invention
24 Network licensing program, please visit www.openinventionnetwork.com
25 <http://www.openinventionnetwork.com>. */
26
27 #ifdef HAVE_CONFIG_H
28 # include <config.h>
29 #endif
30
31 #include <ctype.h>
32 #include <stdio.h>
33 #include <string.h>
34
35 #include <libasmP.h>
36
37
38 /* Add zero terminated string STR of size LEN to (sub)section ASMSCN. */
39 int
asm_addstrz(asmscn,str,len)40 asm_addstrz (asmscn, str, len)
41 AsmScn_t *asmscn;
42 const char *str;
43 size_t len;
44 {
45 if (asmscn == NULL)
46 return -1;
47
48 if (unlikely (asmscn->type == SHT_NOBITS))
49 {
50 if (len == 0)
51 {
52 if (str[0] != '\0')
53 {
54 __libasm_seterrno (ASM_E_TYPE);
55 return -1;
56 }
57 }
58 else
59 {
60 size_t cnt;
61
62 for (cnt = 0; cnt < len; ++cnt)
63 if (str[cnt] != '\0')
64 {
65 __libasm_seterrno (ASM_E_TYPE);
66 return -1;
67 }
68 }
69 }
70
71 if (len == 0)
72 len = strlen (str) + 1;
73
74 if (unlikely (asmscn->ctx->textp))
75 {
76 bool nextline = true;
77
78 do
79 {
80 if (nextline)
81 {
82 fputs ("\t.string\t\"", asmscn->ctx->out.file);
83 nextline = false;
84 }
85
86 if (*str == '\0')
87 fputs ("\\000", asmscn->ctx->out.file);
88 else if (! isascii (*str))
89 fprintf (asmscn->ctx->out.file, "\\%03o",
90 (unsigned int) *((unsigned char *)str));
91 else if (*str == '\\')
92 fputs ("\\\\", asmscn->ctx->out.file);
93 else if (*str == '\n')
94 {
95 fputs ("\\n\"", asmscn->ctx->out.file);
96 nextline = true;
97 }
98 else
99 fputc (*str, asmscn->ctx->out.file);
100
101 ++str;
102 }
103 while (--len > 0 && (len > 1 || *str != '\0'));
104
105 if (! nextline)
106 fputs ("\"\n", asmscn->ctx->out.file);
107 }
108 else
109 {
110 /* Make sure there is enough room. */
111 if (__libasm_ensure_section_space (asmscn, len) != 0)
112 return -1;
113
114 /* Copy the string. */
115 memcpy (&asmscn->content->data[asmscn->content->len], str, len);
116
117 /* Adjust the pointer in the data buffer. */
118 asmscn->content->len += len;
119
120 /* Increment the offset in the (sub)section. */
121 asmscn->offset += len;
122 }
123
124 return 0;
125 }
126