Line data    Source code

       1             : /* Add string to a section.
       2             :    Copyright (C) 2002 Red Hat, Inc.
       3             :    This file is part of elfutils.
       4             :    Written by Ulrich Drepper <drepper@redhat.com>, 2002.
       5             : 
       6             :    This file is free software; you can redistribute it and/or modify
       7             :    it under the terms of either
       8             : 
       9             :      * the GNU Lesser General Public License as published by the Free
      10             :        Software Foundation; either version 3 of the License, or (at
      11             :        your option) any later version
      12             : 
      13             :    or
      14             : 
      15             :      * the GNU General Public License as published by the Free
      16             :        Software Foundation; either version 2 of the License, or (at
      17             :        your option) any later version
      18             : 
      19             :    or both in parallel, as here.
      20             : 
      21             :    elfutils is distributed in the hope that it will be useful, but
      22             :    WITHOUT ANY WARRANTY; without even the implied warranty of
      23             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      24             :    General Public License for more details.
      25             : 
      26             :    You should have received copies of the GNU General Public License and
      27             :    the GNU Lesser General Public License along with this program.  If
      28             :    not, see <http://www.gnu.org/licenses/>.  */
      29             : 
      30             : #ifdef HAVE_CONFIG_H
      31             : # include <config.h>
      32             : #endif
      33             : 
      34             : #include <ctype.h>
      35             : #include <stdio.h>
      36             : #include <string.h>
      37             : 
      38             : #include <libasmP.h>
      39             : 
      40             : 
      41             : /* Add zero terminated string STR of size LEN to (sub)section ASMSCN.  */
      42             : int
      43           6 : asm_addstrz (AsmScn_t *asmscn, const char *str, size_t len)
      44             : {
      45           6 :   if (asmscn == NULL)
      46             :     return -1;
      47             : 
      48           6 :   if (unlikely (asmscn->type == SHT_NOBITS))
      49             :     {
      50           0 :       if (len == 0)
      51             :         {
      52           0 :           if (str[0] != '\0')
      53             :             {
      54           0 :               __libasm_seterrno (ASM_E_TYPE);
      55           0 :               return -1;
      56             :             }
      57             :         }
      58             :       else
      59             :         {
      60             :           size_t cnt;
      61             : 
      62           0 :           for (cnt = 0; cnt < len; ++cnt)
      63           0 :             if (str[cnt] != '\0')
      64             :               {
      65           0 :                 __libasm_seterrno (ASM_E_TYPE);
      66           0 :                 return -1;
      67             :               }
      68             :         }
      69             :     }
      70             : 
      71           6 :   if (len == 0)
      72           2 :     len = strlen (str) + 1;
      73             : 
      74           6 :   if (unlikely (asmscn->ctx->textp))
      75             :     {
      76             :       bool nextline = true;
      77             : 
      78             :       do
      79             :         {
      80           0 :           if (nextline)
      81             :             {
      82           0 :               fputs ("\t.string\t\"", asmscn->ctx->out.file);
      83           0 :               nextline = false;
      84             :             }
      85             : 
      86           0 :           if (*str == '\0')
      87           0 :             fputs ("\\000", asmscn->ctx->out.file);
      88           0 :           else if (! isascii (*str))
      89           0 :             fprintf (asmscn->ctx->out.file, "\\%03o",
      90             :                      (unsigned int) *((unsigned char *)str));
      91           0 :           else if (*str == '\\')
      92           0 :             fputs ("\\\\", asmscn->ctx->out.file);
      93           0 :           else if (*str == '\n')
      94             :             {
      95           0 :               fputs ("\\n\"", asmscn->ctx->out.file);
      96           0 :               nextline = true;
      97             :             }
      98             :           else
      99           0 :             fputc (*str, asmscn->ctx->out.file);
     100             : 
     101           0 :           ++str;
     102             :         }
     103           0 :       while (--len > 0 && (len > 1 || *str != '\0'));
     104             : 
     105           0 :       if (! nextline)
     106           0 :         fputs ("\"\n", asmscn->ctx->out.file);
     107             :     }
     108             :   else
     109             :     {
     110             :       /* Make sure there is enough room.  */
     111           6 :       if (__libasm_ensure_section_space (asmscn, len) != 0)
     112             :         return -1;
     113             : 
     114             :       /* Copy the string.  */
     115          12 :       memcpy (&asmscn->content->data[asmscn->content->len], str, len);
     116             : 
     117             :       /* Adjust the pointer in the data buffer.  */
     118           6 :       asmscn->content->len += len;
     119             : 
     120             :       /* Increment the offset in the (sub)section.  */
     121           6 :       asmscn->offset += len;
     122             :     }
     123             : 
     124             :   return 0;
     125             : }