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
42 const char *
ia64_segment_type_name(int segment,char * buf,size_t len)43 ia64_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
64 const char *
ia64_dynamic_tag_name(int64_t tag,char * buf,size_t len)65 ia64_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. */
79 bool
ia64_dynamic_tag_check(int64_t tag)80 ia64_dynamic_tag_check (int64_t tag)
81 {
82 return tag == DT_IA_64_PLT_RESERVE;
83 }
84
85 /* Check whether machine flags are valid. */
86 bool
ia64_machine_flag_check(GElf_Word flags)87 ia64_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. */
93 bool
ia64_machine_section_flag_check(GElf_Xword sh_flags)94 ia64_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. */
100 const char *
ia64_section_type_name(int type,char * buf,size_t len)101 ia64_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. */
117 Elf_Type
ia64_reloc_simple_type(Ebl * ebl,int type,int * addsub)118 ia64_reloc_simple_type (Ebl *ebl, int type,
119 int *addsub __attribute__ ((unused)))
120 {
121 switch (type)
122 {
123 /* The SECREL types when used with non-allocated sections
124 like .debug_* are the same as direct absolute relocs
125 applied to those sections, since a 0 section address is assumed.
126 So we treat them the same here. */
127
128 case R_IA64_SECREL32MSB:
129 case R_IA64_DIR32MSB:
130 if (ebl->data == ELFDATA2MSB)
131 return ELF_T_WORD;
132 break;
133 case R_IA64_SECREL32LSB:
134 case R_IA64_DIR32LSB:
135 if (ebl->data == ELFDATA2LSB)
136 return ELF_T_WORD;
137 break;
138 case R_IA64_DIR64MSB:
139 case R_IA64_SECREL64MSB:
140 if (ebl->data == ELFDATA2MSB)
141 return ELF_T_XWORD;
142 break;
143 case R_IA64_SECREL64LSB:
144 case R_IA64_DIR64LSB:
145 if (ebl->data == ELFDATA2LSB)
146 return ELF_T_XWORD;
147 break;
148 }
149
150 return ELF_T_NUM;
151 }
152
153 /* The SHT_IA_64_UNWIND section type is a valid target for relocation. */
154 bool
ia64_check_reloc_target_type(Ebl * ebl,Elf64_Word sh_type)155 ia64_check_reloc_target_type (Ebl *ebl __attribute__ ((unused)), Elf64_Word sh_type)
156 {
157 return sh_type == SHT_IA_64_UNWIND;
158 }
159