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
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
|
/* Zilog (e)Z80-specific support for 32-bit ELF
Copyright (C) 1999-2019 Free Software Foundation, Inc.
(Heavily copied from the S12Z port by Sergey Belyashov (sergey.belyashov@gmail.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/z80.h"
/* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */
#define OCTETS_PER_BYTE(ABFD, SEC) 1
/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static bfd_boolean z80_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
typedef struct {
bfd_reloc_code_real_type r_type;
reloc_howto_type howto;
} bfd_howto_type;
#define BFD_EMPTY_HOWTO(rt,x) {rt, EMPTY_HOWTO(x)}
#define BFD_HOWTO(rt,a,b,c,d,e,f,g,h,i,j,k,l,m) {rt, HOWTO(a,b,c,d,e,f,g,h,i,j,k,l,m)}
static const
bfd_howto_type elf_z80_howto_table[] =
{
/* This reloc does nothing. */
BFD_HOWTO (BFD_RELOC_NONE,
R_Z80_NONE, /* type */
0, /* rightshift */
3, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit relocation */
BFD_HOWTO (BFD_RELOC_8,
R_Z80_8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_imm8", /* name */
FALSE, /* partial_inplace */
0x00, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit index register displacement relocation */
BFD_HOWTO (BFD_RELOC_Z80_DISP8,
R_Z80_8_DIS, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_off", /* name */
FALSE, /* partial_inplace */
0x00, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit PC-rel relocation */
BFD_HOWTO (BFD_RELOC_8_PCREL,
R_Z80_8_PCREL, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_jr", /* name */
FALSE, /* partial_inplace */
0x00, /* src_mask */
0xff, /* dst_mask */
TRUE), /* pcrel_offset */
/* An 16 bit absolute relocation */
BFD_HOWTO (BFD_RELOC_16,
R_Z80_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_imm16", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 24 bit absolute relocation emitted by ADL mode operands */
BFD_HOWTO (BFD_RELOC_24,
R_Z80_24, /* type */
0, /* rightshift */
5, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_imm24", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x00ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_32,
R_Z80_32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_imm32", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* First (lowest) 8 bits of multibyte relocation */
BFD_HOWTO (BFD_RELOC_Z80_BYTE0,
R_Z80_BYTE0, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_byte0", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Second 8 bits of multibyte relocation */
BFD_HOWTO (BFD_RELOC_Z80_BYTE1,
R_Z80_BYTE1, /* type */
8, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_byte1", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Third 8 bits of multibyte relocation */
BFD_HOWTO (BFD_RELOC_Z80_BYTE2,
R_Z80_BYTE2, /* type */
16, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_byte2", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* Fourth (highest) 8 bits of multibyte relocation */
BFD_HOWTO (BFD_RELOC_Z80_BYTE3,
R_Z80_BYTE3, /* type */
24, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_byte3", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* An 16 bit absolute relocation of lower word of multibyte value */
BFD_HOWTO (BFD_RELOC_Z80_WORD0,
R_Z80_WORD0, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_word0", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* An 16 bit absolute relocation of higher word of multibyte value */
BFD_HOWTO (BFD_RELOC_Z80_WORD1,
R_Z80_WORD1, /* type */
16, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"r_word1", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
enum
{
table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
};
unsigned int i;
for (i = 0; i < table_size; i++)
{
if (elf_z80_howto_table[i].r_type == code)
return &elf_z80_howto_table[i].howto;
}
printf ("%s:%d Not found type %d\n", __FILE__, __LINE__, code);
return NULL;
}
static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
enum
{
table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
};
unsigned int i;
for (i = 0; i < table_size; i++)
{
if (elf_z80_howto_table[i].howto.name != NULL
&& strcasecmp (elf_z80_howto_table[i].howto.name, r_name) == 0)
return &elf_z80_howto_table[i].howto;
}
return NULL;
}
/* Set the howto pointer for an z80 ELF reloc. */
static bfd_boolean
z80_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
{
enum
{
table_size = sizeof (elf_z80_howto_table) / sizeof (elf_z80_howto_table[0])
};
unsigned int i;
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
for (i = 0; i < table_size; i++)
{
if (elf_z80_howto_table[i].howto.type == r_type)
{
cache_ptr->howto = &elf_z80_howto_table[i].howto;
return TRUE;
}
}
/* xgettext:c-format */
_bfd_error_handler (_("%pB: unsupported relocation type %#x"),
abfd, r_type);
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
static bfd_boolean
z80_elf_set_mach_from_flags (bfd *abfd)
{
int mach;
switch (elf_elfheader (abfd)->e_flags)
{
case EF_Z80_MACH_GBZ80:
mach = bfd_mach_gbz80;
break;
case EF_Z80_MACH_Z80:
mach = bfd_mach_z80;
break;
case EF_Z80_MACH_Z180:
mach = bfd_mach_z180;
break;
case EF_Z80_MACH_EZ80_Z80:
mach = bfd_mach_ez80_z80;
break;
case EF_Z80_MACH_EZ80_ADL:
mach = bfd_mach_ez80_adl;
break;
case EF_Z80_MACH_R800:
mach = bfd_mach_r800;
break;
default:
mach = bfd_mach_z80;
break;
}
bfd_default_set_arch_mach (abfd, bfd_arch_z80, mach);
return TRUE;
}
static int
z80_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED,
const char * name)
{
return (name[0] == '.' && name[1] == 'L') ||
_bfd_elf_is_local_label_name (abfd, name);
}
#define ELF_ARCH bfd_arch_z80
#define ELF_MACHINE_CODE EM_Z80
#define ELF_MAXPAGESIZE 0x10000
#define TARGET_LITTLE_SYM z80_elf32_vec
#define TARGET_LITTLE_NAME "elf32-z80"
#define elf_info_to_howto NULL
#define elf_info_to_howto_rel z80_info_to_howto_rel
#define elf_backend_object_p z80_elf_set_mach_from_flags
#define bfd_elf32_bfd_is_local_label_name z80_is_local_label_name
#include "elf32-target.h"
|
