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126 lines
2.9 KiB
126 lines
2.9 KiB
/* Add string to a section.
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Copyright (C) 2002 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include <libasmP.h>
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/* Add zero terminated string STR of size LEN to (sub)section ASMSCN. */
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int
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asm_addstrz (AsmScn_t *asmscn, const char *str, size_t len)
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{
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if (asmscn == NULL)
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return -1;
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if (unlikely (asmscn->type == SHT_NOBITS))
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{
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if (len == 0)
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{
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if (str[0] != '\0')
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{
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__libasm_seterrno (ASM_E_TYPE);
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return -1;
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}
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}
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else
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{
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size_t cnt;
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for (cnt = 0; cnt < len; ++cnt)
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if (str[cnt] != '\0')
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{
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__libasm_seterrno (ASM_E_TYPE);
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return -1;
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}
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}
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}
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if (len == 0)
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len = strlen (str) + 1;
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if (unlikely (asmscn->ctx->textp))
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{
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bool nextline = true;
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do
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{
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if (nextline)
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{
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fputs ("\t.string\t\"", asmscn->ctx->out.file);
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nextline = false;
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}
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if (*str == '\0')
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fputs ("\\000", asmscn->ctx->out.file);
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else if (! isascii (*str))
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fprintf (asmscn->ctx->out.file, "\\%03o",
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(unsigned int) *((unsigned char *)str));
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else if (*str == '\\')
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fputs ("\\\\", asmscn->ctx->out.file);
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else if (*str == '\n')
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{
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fputs ("\\n\"", asmscn->ctx->out.file);
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nextline = true;
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}
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else
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fputc (*str, asmscn->ctx->out.file);
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++str;
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}
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while (--len > 0 && (len > 1 || *str != '\0'));
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if (! nextline)
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fputs ("\"\n", asmscn->ctx->out.file);
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}
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else
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{
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/* Make sure there is enough room. */
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if (__libasm_ensure_section_space (asmscn, len) != 0)
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return -1;
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/* Copy the string. */
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memcpy (&asmscn->content->data[asmscn->content->len], str, len);
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/* Adjust the pointer in the data buffer. */
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asmscn->content->len += len;
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/* Increment the offset in the (sub)section. */
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asmscn->offset += len;
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}
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return 0;
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}
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