1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/* ARC-specific header file for PLT support.
Copyright (C) 2016-2023 Free Software Foundation, Inc.
Contributed by Cupertino Miranda (cmiranda@synopsys.com).
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
MA 02110-1301, USA. */
#ifndef ARC_PLT_H
#define ARC_PLT_H
/* Instructions appear in memory as a sequence of half-words (16 bit);
individual half-words are represented on the target in target byte order.
We use 'unsigned short' on the host to represent the PLT templates,
and translate to target byte order as we copy to the target. */
typedef uint16_t insn_hword;
enum plt_reloc_symbol
{
LAST_RELOC = 0,
SGOT = 1,
RELATIVE = (1 << 8),
RELATIVE_INSN_32 = (1 << 9),
RELATIVE_INSN_24 = (1 << 10),
MIDDLE_ENDIAN = (1 << 11)
};
#define IS_RELATIVE(S) ((S & (RELATIVE | RELATIVE_INSN_24 | RELATIVE_INSN_32)) != 0)
#define IS_INSN_32(S) ((S & RELATIVE_INSN_32) != 0)
#define IS_INSN_24(S) ((S & RELATIVE_INSN_24) != 0)
#define IS_MIDDLE_ENDIAN(S) ((S & MIDDLE_ENDIAN) != 0)
#define SYM_ONLY(S) (S & 0xFF)
struct plt_reloc
{
bfd_vma offset;
bfd_vma size;
bfd_vma mask;
enum plt_reloc_symbol symbol;
bfd_vma addend;
};
#define PLT_TYPE_START(NAME) NAME,
#define PLT_TYPE_END(NAME)
#define PLT_ENTRY(...)
#define PLT_ELEM(...)
#define ENTRY_RELOC(...)
#define ELEM_RELOC(...)
enum plt_types_enum
{
PLT_START = -1,
#include "arc-plt.def"
PLT_MAX
};
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
typedef insn_hword insn_hword_array[];
struct plt_version_t
{
const insn_hword_array *entry;
const bfd_vma entry_size;
const insn_hword_array *elem;
const bfd_vma elem_size;
const struct plt_reloc *entry_relocs;
const struct plt_reloc *elem_relocs;
};
#define PLT_TYPE_START(NAME) \
const insn_hword NAME##_plt_entry[] = {
#define PLT_TYPE_END(NAME) };
#define PLT_ENTRY(...) __VA_ARGS__,
#define PLT_ELEM(...)
#define ENTRY_RELOC(...)
#define ELEM_RELOC(...)
#include "arc-plt.def"
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
#define PLT_TYPE_START(NAME) \
const struct plt_reloc NAME##_plt_entry_relocs[] = {
#define PLT_TYPE_END(NAME) \
{0, 0, 0, LAST_RELOC, 0} \
};
#define PLT_ENTRY(...)
#define PLT_ELEM(...)
#define ENTRY_RELOC(...) { __VA_ARGS__ },
#define ELEM_RELOC(...)
#include "arc-plt.def"
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
#define PLT_TYPE_START(NAME) \
const insn_hword NAME##_plt_elem[] = {
#define PLT_TYPE_END(NAME) };
#define PLT_ENTRY(...)
#define PLT_ELEM(...) __VA_ARGS__,
#define ENTRY_RELOC(...)
#define ELEM_RELOC(...)
#include "arc-plt.def"
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
#define PLT_TYPE_START(NAME) \
const struct plt_reloc NAME##_plt_elem_relocs[] = {
#define PLT_TYPE_END(NAME) \
{0, 0, 0, LAST_RELOC, 0} \
};
#define PLT_ENTRY(...)
#define PLT_ELEM(...)
#define ENTRY_RELOC(...)
#define ELEM_RELOC(...) { __VA_ARGS__ },
#include "arc-plt.def"
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
#define PLT_TYPE_START(NAME) \
{ \
.entry = &NAME##_plt_entry, \
.entry_size = sizeof (NAME##_plt_entry), \
.elem = &NAME##_plt_elem, \
.elem_size = sizeof (NAME##_plt_elem), \
.entry_relocs = NAME##_plt_entry_relocs, \
.elem_relocs = NAME##_plt_elem_relocs
#define PLT_TYPE_END(NAME) },
#define PLT_ENTRY(...)
#define PLT_ELEM(...)
#define ENTRY_RELOC(...)
#define ELEM_RELOC(...)
const struct plt_version_t plt_versions[PLT_MAX] = {
#include "arc-plt.def"
};
#undef PLT_TYPE_START
#undef PLT_TYPE_END
#undef PLT_ENTRY
#undef PLT_ELEM
#undef ENTRY_RELOC
#undef ELEM_RELOC
#endif /* ARC_PLT_H */
|
