1/* IA-64 specific symbolic name handling.
2   Copyright (C) 2002-2009, 2014 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 <elf.h>
35#include <stddef.h>
36#include <assert.h>
37
38#define BACKEND		ia64_
39#include "libebl_CPU.h"
40
41
42const char *
43ia64_segment_type_name (int segment, char *buf __attribute__ ((unused)),
44			size_t len __attribute__ ((unused)))
45{
46  switch (segment)
47    {
48    case PT_IA_64_ARCHEXT:
49      return "IA_64_ARCHEXT";
50    case PT_IA_64_UNWIND:
51      return "IA_64_UNWIND";
52    case PT_IA_64_HP_OPT_ANOT:
53      return "IA_64_HP_OPT_ANOT";
54    case PT_IA_64_HP_HSL_ANOT:
55      return "IA_64_HP_HSL_ANOT";
56    case PT_IA_64_HP_STACK:
57      return "IA_64_HP_STACK";
58    default:
59      break;
60    }
61  return NULL;
62}
63
64const char *
65ia64_dynamic_tag_name (int64_t tag, char *buf __attribute__ ((unused)),
66		       size_t len __attribute__ ((unused)))
67{
68  switch (tag)
69    {
70    case DT_IA_64_PLT_RESERVE:
71      return "IA_64_PLT_RESERVE";
72    default:
73      break;
74    }
75  return NULL;
76}
77
78/* Check dynamic tag.  */
79bool
80ia64_dynamic_tag_check (int64_t tag)
81{
82  return tag == DT_IA_64_PLT_RESERVE;
83}
84
85/* Check whether machine flags are valid.  */
86bool
87ia64_machine_flag_check (GElf_Word flags)
88{
89  return ((flags &~ EF_IA_64_ABI64) == 0);
90}
91
92/* Check whether SHF_MASKPROC flags are valid.  */
93bool
94ia64_machine_section_flag_check (GElf_Xword sh_flags)
95{
96  return (sh_flags &~ (SHF_IA_64_SHORT | SHF_IA_64_NORECOV)) == 0;
97}
98
99/* Return symbolic representation of section type.  */
100const char *
101ia64_section_type_name (int type,
102			char *buf __attribute__ ((unused)),
103			size_t len __attribute__ ((unused)))
104{
105  switch (type)
106    {
107    case SHT_IA_64_EXT:
108      return "IA_64_EXT";
109    case SHT_IA_64_UNWIND:
110      return "IA_64_UNWIND";
111    }
112
113  return NULL;
114}
115
116/* Check for the simple reloc types.  */
117Elf_Type
118ia64_reloc_simple_type (Ebl *ebl, int type)
119{
120  switch (type)
121    {
122      /* The SECREL types when used with non-allocated sections
123	 like .debug_* are the same as direct absolute relocs
124	 applied to those sections, since a 0 section address is assumed.
125	 So we treat them the same here.  */
126
127    case R_IA64_SECREL32MSB:
128    case R_IA64_DIR32MSB:
129      if (ebl->data == ELFDATA2MSB)
130	return ELF_T_WORD;
131      break;
132    case R_IA64_SECREL32LSB:
133    case R_IA64_DIR32LSB:
134      if (ebl->data == ELFDATA2LSB)
135	return ELF_T_WORD;
136      break;
137    case R_IA64_DIR64MSB:
138    case R_IA64_SECREL64MSB:
139      if (ebl->data == ELFDATA2MSB)
140	return ELF_T_XWORD;
141      break;
142    case R_IA64_SECREL64LSB:
143    case R_IA64_DIR64LSB:
144      if (ebl->data == ELFDATA2LSB)
145	return ELF_T_XWORD;
146      break;
147    }
148
149  return ELF_T_NUM;
150}
151
152/* The SHT_IA_64_UNWIND section type is a valid target for relocation.  */
153bool
154ia64_check_reloc_target_type (Ebl *ebl __attribute__ ((unused)), Elf64_Word sh_type)
155{
156  return sh_type == SHT_IA_64_UNWIND;
157}
158