Line data    Source code

       1             : /* Create new section group.
       2             :    Copyright (C) 2002, 2016 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 <assert.h>
      35             : #include <stdlib.h>
      36             : #include <string.h>
      37             : 
      38             : #include "libasmP.h"
      39             : #include <system.h>
      40             : 
      41             : 
      42             : 
      43             : AsmScnGrp_t *
      44       22000 : asm_newscngrp (AsmCtx_t *ctx, const char *grpname, AsmSym_t *signature,
      45             :                Elf32_Word flags)
      46             : {
      47             :   AsmScnGrp_t *result;
      48       22000 :   size_t grpname_len = strlen (grpname) + 1;
      49             : 
      50       22000 :   if (ctx == NULL)
      51             :     return NULL;
      52             : 
      53       22000 :   if ((flags & ~GRP_COMDAT) != 0)
      54             :     {
      55             :       /* This is not a supported flag.  */
      56           0 :       __libasm_seterrno (ASM_E_INVALID);
      57           0 :       return NULL;
      58             :     }
      59             : 
      60       22000 :   result = (AsmScnGrp_t *) malloc (sizeof (AsmScnGrp_t) + grpname_len);
      61       22000 :   if (result == NULL)
      62             :     return NULL;
      63             : 
      64       22000 :   result->signature = signature;
      65       22000 :   result->members = NULL;
      66       22000 :   result->nmembers = 0;
      67       22000 :   result->flags = flags;
      68             : 
      69       44000 :   memcpy (result->name, grpname, grpname_len);
      70       22000 :   result->strent = dwelf_strtab_add_len (ctx->section_strtab, result->name,
      71             :                                          grpname_len);
      72             : 
      73       22000 :   if (unlikely (ctx->textp))
      74             :     // XXX TBI.  What is the format?
      75           0 :     abort ();
      76             :   else
      77             :     {
      78       22000 :       result->scn = elf_newscn (ctx->out.elf);
      79       22000 :       if (result->scn == NULL)
      80             :         {
      81             :           /* Couldn't allocate a new section.  */
      82           0 :           __libasm_seterrno (ASM_E_LIBELF);
      83           0 :           free (result);
      84           0 :           return NULL;
      85             :         }
      86             :     }
      87             : 
      88             :   /* Enqueue is the context data structure.  */
      89       22000 :   if (ctx->ngroups == 0)
      90             :     {
      91           1 :       assert (ctx->groups == NULL);
      92           1 :       ctx->groups = result->next = result;
      93             :     }
      94             :   else
      95             :     {
      96       21999 :       result->next = ctx->groups->next;
      97       21999 :       ctx->groups = ctx->groups->next = result;
      98             :     }
      99       22000 :   ++ctx->ngroups;
     100             : 
     101       22000 :   return result;
     102             : }