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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
|
/* picoJava specific support for 32-bit ELF
Copyright (C) 1999-2014 Free Software Foundation, Inc.
Contributed by Steve Chamberlan of Transmeta (sac@pobox.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. */
#include "sysdep.h"
#include "bfd.h"
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/pj.h"
/* This function is used for normal relocs. This is like the COFF
function, and is almost certainly incorrect for other ELF targets. */
static bfd_reloc_status_type
pj_elf_reloc (bfd *abfd,
arelent *reloc_entry,
asymbol *symbol_in,
void * data,
asection *input_section,
bfd *output_bfd,
char **error_message ATTRIBUTE_UNUSED)
{
unsigned long insn;
bfd_vma sym_value;
enum elf_pj_reloc_type r_type;
bfd_vma addr = reloc_entry->address;
bfd_byte *hit_data = addr + (bfd_byte *) data;
r_type = (enum elf_pj_reloc_type) reloc_entry->howto->type;
if (output_bfd != NULL)
{
/* Partial linking--do nothing. */
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (symbol_in != NULL
&& bfd_is_und_section (symbol_in->section))
return bfd_reloc_undefined;
if (bfd_is_com_section (symbol_in->section))
sym_value = 0;
else
sym_value = (symbol_in->value +
symbol_in->section->output_section->vma +
symbol_in->section->output_offset);
switch (r_type)
{
case R_PJ_DATA_DIR32:
insn = bfd_get_32 (abfd, hit_data);
insn += sym_value + reloc_entry->addend;
bfd_put_32 (abfd, (bfd_vma) insn, hit_data);
break;
/* Relocations in code are always bigendian, no matter what the
data endianness is. */
case R_PJ_CODE_DIR32:
insn = bfd_getb32 (hit_data);
insn += sym_value + reloc_entry->addend;
bfd_putb32 ((bfd_vma) insn, hit_data);
break;
case R_PJ_CODE_REL16:
insn = bfd_getb16 (hit_data);
insn += sym_value + reloc_entry->addend
- (input_section->output_section->vma
+ input_section->output_offset);
bfd_putb16 ((bfd_vma) insn, hit_data);
break;
case R_PJ_CODE_LO16:
insn = bfd_getb16 (hit_data);
insn += sym_value + reloc_entry->addend;
bfd_putb16 ((bfd_vma) insn, hit_data);
break;
case R_PJ_CODE_HI16:
insn = bfd_getb16 (hit_data);
insn += (sym_value + reloc_entry->addend) >> 16;
bfd_putb16 ((bfd_vma) insn, hit_data);
break;
default:
abort ();
break;
}
return bfd_reloc_ok;
}
static reloc_howto_type pj_elf_howto_table[] =
{
/* No relocation. */
HOWTO (R_PJ_NONE, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32 bit absolute relocation. Setting partial_inplace to TRUE and
src_mask to a non-zero value is similar to the COFF toolchain. */
HOWTO (R_PJ_DATA_DIR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_DIR32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* 32 bit PC relative relocation. */
HOWTO (R_PJ_CODE_REL32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_REL32", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* 16 bit PC relative relocation. */
HOWTO (R_PJ_CODE_REL16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overf6w */
pj_elf_reloc, /* special_function */
"R_PJ_REL16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
EMPTY_HOWTO (4),
EMPTY_HOWTO (5),
HOWTO (R_PJ_CODE_DIR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_CODE_DIR32", /* name */
TRUE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (7),
EMPTY_HOWTO (8),
EMPTY_HOWTO (9),
EMPTY_HOWTO (10),
EMPTY_HOWTO (11),
EMPTY_HOWTO (12),
HOWTO (R_PJ_CODE_LO16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_LO16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
HOWTO (R_PJ_CODE_HI16, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned, /* complain_on_overflow */
pj_elf_reloc, /* special_function */
"R_PJ_HI16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy. */
HOWTO (R_PJ_GNU_VTINHERIT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_PJ_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* GNU extension to record C++ vtable member usage. */
HOWTO (R_PJ_GNU_VTENTRY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
"R_PJ_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
};
/* This structure is used to map BFD reloc codes to PJ ELF relocs. */
struct elf_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
/* An array mapping BFD reloc codes to PJ ELF relocs. */
static const struct elf_reloc_map pj_reloc_map[] =
{
{ BFD_RELOC_NONE, R_PJ_NONE },
{ BFD_RELOC_32, R_PJ_DATA_DIR32 },
{ BFD_RELOC_PJ_CODE_DIR16, R_PJ_CODE_DIR16 },
{ BFD_RELOC_PJ_CODE_DIR32, R_PJ_CODE_DIR32 },
{ BFD_RELOC_PJ_CODE_LO16, R_PJ_CODE_LO16 },
{ BFD_RELOC_PJ_CODE_HI16, R_PJ_CODE_HI16 },
{ BFD_RELOC_PJ_CODE_REL32, R_PJ_CODE_REL32 },
{ BFD_RELOC_PJ_CODE_REL16, R_PJ_CODE_REL16 },
{ BFD_RELOC_VTABLE_INHERIT, R_PJ_GNU_VTINHERIT },
{ BFD_RELOC_VTABLE_ENTRY, R_PJ_GNU_VTENTRY },
};
/* Given a BFD reloc code, return the howto structure for the
corresponding PJ ELf reloc. */
static reloc_howto_type *
pj_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned int i;
for (i = 0; i < sizeof (pj_reloc_map) / sizeof (struct elf_reloc_map); i++)
if (pj_reloc_map[i].bfd_reloc_val == code)
return & pj_elf_howto_table[(int) pj_reloc_map[i].elf_reloc_val];
return NULL;
}
static reloc_howto_type *
pj_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned int i;
for (i = 0;
i < sizeof (pj_elf_howto_table) / sizeof (pj_elf_howto_table[0]);
i++)
if (pj_elf_howto_table[i].name != NULL
&& strcasecmp (pj_elf_howto_table[i].name, r_name) == 0)
return &pj_elf_howto_table[i];
return NULL;
}
/* Given an ELF reloc, fill in the howto field of a relent. */
static void
pj_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r;
r = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r < (unsigned int) R_PJ_max);
cache_ptr->howto = &pj_elf_howto_table[r];
}
/* Take this moment to fill in the special picoJava bits in the
e_flags field. */
static void
pj_elf_final_write_processing (bfd *abfd,
bfd_boolean linker ATTRIBUTE_UNUSED)
{
elf_elfheader (abfd)->e_flags |= EF_PICOJAVA_ARCH;
elf_elfheader (abfd)->e_flags |= EF_PICOJAVA_GNUCALLS;
}
#define TARGET_BIG_SYM pj_elf32_vec
#define TARGET_BIG_NAME "elf32-pj"
#define TARGET_LITTLE_SYM pj_elf32_le_vec
#define TARGET_LITTLE_NAME "elf32-pjl"
#define ELF_ARCH bfd_arch_pj
#define ELF_MACHINE_CODE EM_PJ
#define ELF_MACHINE_ALT1 EM_PJ_OLD
#define ELF_MAXPAGESIZE 0x1000
#define bfd_elf32_bfd_get_relocated_section_contents \
bfd_generic_get_relocated_section_contents
#define bfd_elf32_bfd_reloc_type_lookup pj_elf_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup pj_elf_reloc_name_lookup
#define elf_backend_final_write_processing pj_elf_final_write_processing
#define elf_info_to_howto pj_elf_info_to_howto
#include "elf32-target.h"
|
