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
30 GElf_Addr
arch_plt_sym_val(struct ltelf * lte,size_t ndx,GElf_Rela * rela)31 arch_plt_sym_val(struct ltelf *lte, size_t ndx, GElf_Rela * rela) {
32 return lte->plt_addr + (ndx + 1) * 32;
33 }
34
35 void *
sym2addr(struct process * proc,struct library_symbol * sym)36 sym2addr(struct process *proc, struct library_symbol *sym)
37 {
38 return sym->enter_addr;
39 }
40
41 enum plt_status
arch_elf_add_plt_entry(struct process * proc,struct ltelf * lte,const char * a_name,GElf_Rela * rela,size_t ndx,struct library_symbol ** ret)42 arch_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