Branch data Line data Source code
1 : : /* Initialization of PPC64 specific backend library.
2 : : Copyright (C) 2004, 2005, 2006, 2007, 2008, 2013, 2014 Red Hat, Inc.
3 : : This file is part of elfutils.
4 : : Written by Ulrich Drepper <drepper@redhat.com>, 2004.
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 <string.h>
35 : :
36 : : #define BACKEND ppc64_
37 : : #define RELOC_PREFIX R_PPC64_
38 : : #include "libebl_CPU.h"
39 : :
40 : : /* This defines the common reloc hooks based on ppc64_reloc.def. */
41 : : #include "common-reloc.c"
42 : :
43 : :
44 : : Ebl *
45 : 286 : ppc64_init (Elf *elf __attribute__ ((unused)),
46 : : GElf_Half machine __attribute__ ((unused)),
47 : : Ebl *eh)
48 : : {
49 : : /* We handle it. */
50 [ + - ]: 286 : ppc64_init_reloc (eh);
51 : 286 : HOOK (eh, reloc_simple_type);
52 : 286 : HOOK (eh, dynamic_tag_name);
53 : 286 : HOOK (eh, dynamic_tag_check);
54 : 286 : HOOK (eh, machine_flag_check);
55 : 286 : HOOK (eh, copy_reloc_p);
56 : 286 : HOOK (eh, check_special_symbol);
57 : 286 : HOOK (eh, check_st_other_bits);
58 : 286 : HOOK (eh, bss_plt_p);
59 : 286 : HOOK (eh, return_value_location);
60 : 286 : HOOK (eh, register_info);
61 : 286 : HOOK (eh, core_note);
62 : 286 : HOOK (eh, auxv_info);
63 : 286 : HOOK (eh, check_object_attribute);
64 : 286 : HOOK (eh, abi_cfi);
65 : : /* gcc/config/ #define DWARF_FRAME_REGISTERS. */
66 : 286 : eh->frame_nregs = (114 - 1) + 32;
67 : 286 : HOOK (eh, set_initial_registers_tid);
68 : 286 : HOOK (eh, dwarf_to_regno);
69 : 286 : HOOK (eh, unwind);
70 : 286 : HOOK (eh, resolve_sym_value);
71 : :
72 : : /* Find the function descriptor .opd table for resolve_sym_value. */
73 [ + - ]: 286 : if (elf != NULL)
74 : : {
75 : 286 : GElf_Ehdr ehdr_mem, *ehdr = gelf_getehdr (elf, &ehdr_mem);
76 : 286 : size_t shstrndx;
77 [ + - + + ]: 286 : if (ehdr != NULL && ehdr->e_type != ET_REL
78 [ + - ]: 146 : && elf_getshdrstrndx (elf, &shstrndx) == 0)
79 : : {
80 : : /* We could also try through DT_PPC64_OPD and DT_PPC64_OPDSZ. */
81 : : GElf_Shdr opd_shdr_mem, *opd_shdr;
82 : : Elf_Scn *scn = NULL;
83 [ + + ]: 2060 : while ((scn = elf_nextscn (elf, scn)) != NULL)
84 : : {
85 : 1969 : opd_shdr = gelf_getshdr (scn, &opd_shdr_mem);
86 [ + - ]: 1969 : if (opd_shdr != NULL
87 [ + + ]: 1969 : && (opd_shdr->sh_flags & SHF_ALLOC) != 0
88 [ + + ]: 1427 : && opd_shdr->sh_type == SHT_PROGBITS
89 [ + + ]: 724 : && opd_shdr->sh_size > 0)
90 : : {
91 : 1298 : const char *name = elf_strptr (elf, shstrndx,
92 : 649 : opd_shdr->sh_name);
93 [ + - + + ]: 649 : if (name != NULL && strcmp (name, ".opd") == 0)
94 : : {
95 : 55 : eh->fd_addr = opd_shdr->sh_addr;
96 : 55 : eh->fd_data = elf_getdata (scn, NULL);
97 : 55 : break;
98 : : }
99 : : }
100 : : }
101 : : }
102 : : }
103 : :
104 : 286 : return eh;
105 : : }
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