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/* On-demand PLT fixup for shared objects. Stub version.
Copyright (C) 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <link.h>
#include "dynamic-link.h"
/* This function is not called in the normal way. The PLT jumps here, not
using a call. */
void
_dl_runtime_resolve ()
{
struct link_map *l = ???;
Elf32_Word reloc_offset = ???;
const Elf32_Sym *const symtab
= (const Elf32_Sym *) l->l_info[DT_SYMTAB]->d_un.d_ptr;
const char *strtab
= ((void *) l->l_addr + l->l_info[DT_STRTAB]->d_un.d_ptr);
const Elf32_Rel *const reloc = (void *) (l->l_info[DT_JMPREL]->d_un.d_ptr
+ reloc_offset);
const Elf32_Sym *definer;
Elf32_Addr loadbase;
struct link_map *scope, *real_next;
/* Look up the symbol's run-time value. */
real_next = l->l_next;
if (l->l_info[DT_SYMBOLIC])
{
l->l_prev->l_next = real_next;
l->l_next = _dl_loaded;
scope = l;
}
else
scope = _dl_loaded;
definer = &symtab[ELF32_R_SYM (reloc->r_info)];
loadbase = _dl_lookup_symbol (strtab + definer->st_name, &definer, scope);
/* Restore list frobnication done above for DT_SYMBOLIC. */
l->l_next = real_next;
l->l_prev->l_next = l;
/* Apply the relocation with that value. */
elf_machine_rel (l->l_addr, l->l_info, reloc, loadbase, definer);
}
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