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
|
/* ARC-specific support for 32-bit ELF
Copyright (C) 1994 Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.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 2 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "libelf.h"
static bfd_reloc_status_type arc_elf_unsupported_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void arc_info_to_howto
PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
enum reloc_type
{
R_ARC_NONE = 0,
R_ARC_ADDR32,
R_ARC_B22_PCREL,
R_ARC_max
};
static reloc_howto_type elf_arc_howto_table[] =
{
/* This reloc does nothing. */
HOWTO (R_ARC_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARC_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
/* A standard 32 bit relocation. */
HOWTO (R_ARC_ADDR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARC_ADDR32", /* name */
false, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
false), /* pcrel_offset */
/* A relative 22 bit branch; the lower two bits must be zero. */
HOWTO (R_ARC_B22_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
22, /* bitsize */
true, /* pc_relative */
7, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_ARC_B22_PCREL", /* name */
false, /* partial_inplace */
0, /* src_mask */
0x07ffff80, /* dst_mask */
true), /* pcrel_offset */
};
/* Don't pretend we can deal with unsupported relocs. */
static bfd_reloc_status_type
arc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
abort ();
}
/* Map BFD reloc types to PowerPC ELF reloc types. */
struct arc_reloc_map
{
unsigned char bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct arc_reloc_map arc_reloc_map[] =
{
{ BFD_RELOC_NONE, R_ARC_NONE, },
{ BFD_RELOC_32, R_ARC_ADDR32 },
{ BFD_RELOC_CTOR, R_ARC_ADDR32 },
{ BFD_RELOC_ARC_B22_PCREL, R_ARC_B22_PCREL },
};
static const struct reloc_howto_struct *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
{
int i;
for (i = 0;
i < sizeof (arc_reloc_map) / sizeof (struct arc_reloc_map);
i++)
{
if (arc_reloc_map[i].bfd_reloc_val == code)
return &elf_arc_howto_table[arc_reloc_map[i].elf_reloc_val];
}
return NULL;
}
/* Set the howto pointer for an ARC ELF reloc. */
static void
arc_info_to_howto (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf32_Internal_Rela *dst;
{
BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_ARC_max);
cache_ptr->howto = &elf_arc_howto_table[ELF32_R_TYPE (dst->r_info)];
}
#define TARGET_BIG_SYM bfd_elf32_arc_vec
#define TARGET_BIG_NAME "elf32-arc"
#define ELF_ARCH bfd_arch_arc
#define ELF_MACHINE_CODE EM_CYGNUS_ARC
#define ELF_MAXPAGESIZE 0x10000
#define elf_info_to_howto arc_info_to_howto
#include "elf32-target.h"
|
