plt.c revision f7864d60f0c8180806ed9b7d8dac26b250bd7120 
1/*
2 * This file is part of ltrace.
3 * Copyright (C) 2013 Petr Machata, Red Hat Inc.
4 * Copyright (C) 2004,2008,2009 Juan Cespedes
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
19 * 02110-1301 USA
20 */
21
22#include <gelf.h>
23#include <stdbool.h>
24
25#include "proc.h"
26#include "common.h"
27#include "library.h"
28#include "trace.h"
29
30GElf_Addr
31arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela * rela) {
32	return lte->plt_addr + (ndx + 1) * 32;
33}
34
35void *
36sym2addr(struct process *proc, struct library_symbol *sym)
37{
38	return sym->enter_addr;
39}
40
41enum plt_status
42arch_elf_add_plt_entry(struct process *proc, struct ltelf *lte,
43		       const char *a_name, GElf_Rela *rela, size_t ndx,
44		       struct library_symbol **ret)
45{
46#ifdef R_390_IRELATIVE
47	bool irelative = GELF_R_TYPE(rela->r_info) == R_390_IRELATIVE;
48#else
49	bool irelative = false;
50#endif
51
52	if (irelative)
53		return linux_elf_add_plt_entry_irelative(proc, lte, rela,
54							 ndx, ret);
55
56	return PLT_DEFAULT;
57}
58