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
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
|
/* BFD back-end for Zilog Z80 COFF binaries.
Copyright (C) 2005-2021 Free Software Foundation, Inc.
Contributed by Arnold Metselaar <arnold_m@operamail.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 "libbfd.h"
#include "bfdlink.h"
#include "coff/z80.h"
#include "coff/internal.h"
#include "libcoff.h"
#include "libiberty.h"
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
typedef const 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 bfd_howto_type howto_table[] =
{
BFD_EMPTY_HOWTO (BFD_RELOC_NONE, 0),
BFD_HOWTO (BFD_RELOC_32,
R_IMM32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
0, /* special_function */
"r_imm32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_24,
R_IMM24, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
0, /* special_function */
"r_imm24", /* name */
FALSE, /* partial_inplace */
0x00ffffff, /* src_mask */
0x00ffffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_16,
R_IMM16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
0, /* special_function */
"r_imm16", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_8,
R_IMM8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
0, /* special_function */
"r_imm8", /* name */
FALSE, /* partial_inplace */
0x000000ff, /* src_mask */
0x000000ff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_8_PCREL,
R_JR, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
0, /* special_function */
"r_jr", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xFF, /* dst_mask */
TRUE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_DISP8,
R_OFF8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
0, /* special_function */
"r_off8", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_BYTE0,
R_BYTE0, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_byte0", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_BYTE1,
R_BYTE1, /* type */
8, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_byte1", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_BYTE2,
R_BYTE2, /* type */
16, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_byte2", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_BYTE3,
R_BYTE3, /* type */
24, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_byte3", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_WORD0,
R_WORD0, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_word0", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_WORD1,
R_WORD1, /* type */
16, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
0, /* special_function */
"r_word1", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
BFD_HOWTO (BFD_RELOC_Z80_16_BE,
R_IMM16BE, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
0, /* special_function */
"r_imm16be", /* name */
FALSE, /* partial_inplace */
0x0000ffff, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
};
#define NUM_HOWTOS ARRAY_SIZE (howto_table)
#define BADMAG(x) Z80BADMAG(x)
#define Z80 1 /* Customize coffcode.h. */
#define __A_MAGIC_SET__
/* Code to swap in the reloc. */
#define SWAP_IN_RELOC_OFFSET H_GET_32
#define SWAP_OUT_RELOC_OFFSET H_PUT_32
#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
dst->r_stuff[0] = 'S'; \
dst->r_stuff[1] = 'C';
/* Code to turn a r_type into a howto ptr, uses the above howto table. */
static void
rtype2howto (arelent *internal, struct internal_reloc *dst)
{
unsigned i;
for (i = 0; i < NUM_HOWTOS; i++)
{
if (howto_table[i].howto.type == dst->r_type)
{
internal->howto = &howto_table[i].howto;
return;
}
}
internal->howto = NULL;
}
#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
static reloc_howto_type *
coff_z80_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
unsigned i;
for (i = 0; i < NUM_HOWTOS; i++)
if (howto_table[i].r_type == code)
return &howto_table[i].howto;
BFD_FAIL ();
return NULL;
}
static reloc_howto_type *
coff_z80_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
const char *r_name)
{
unsigned i;
for (i = 0; i < NUM_HOWTOS; i++)
if (strcasecmp(howto_table[i].howto.name, r_name) == 0)
return &howto_table[i].howto;
return NULL;
}
/* Perform any necessary magic to the addend in a reloc entry. */
#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
cache_ptr->addend = ext_reloc.r_offset;
#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
reloc_processing(relent, reloc, symbols, abfd, section)
static void
reloc_processing (arelent *relent,
struct internal_reloc *reloc,
asymbol **symbols,
bfd *abfd,
asection *section)
{
relent->address = reloc->r_vaddr;
rtype2howto (relent, reloc);
if (reloc->r_symndx > 0)
relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
else
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
relent->addend = reloc->r_offset;
relent->address -= section->vma;
}
static void
extra_case (bfd *in_abfd,
struct bfd_link_info *link_info,
struct bfd_link_order *link_order,
arelent *reloc,
bfd_byte *data,
unsigned int *src_ptr,
unsigned int *dst_ptr)
{
asection * input_section = link_order->u.indirect.section;
int val = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
switch (reloc->howto->type)
{
case R_OFF8:
if (reloc->howto->partial_inplace)
val += (signed char)(bfd_get_8 ( in_abfd, data+*src_ptr)
& reloc->howto->src_mask);
if (val>127 || val<-128) /* Test for overflow. */
(*link_info->callbacks->reloc_overflow)
(link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address);
bfd_put_8 (in_abfd, val, data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_BYTE3:
bfd_put_8 (in_abfd, val >> 24, data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_BYTE2:
bfd_put_8 (in_abfd, val >> 16, data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_BYTE1:
bfd_put_8 (in_abfd, val >> 8, data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_IMM8:
if (reloc->howto->partial_inplace)
val += bfd_get_8 ( in_abfd, data+*src_ptr) & reloc->howto->src_mask;
/* Fall through. */
case R_BYTE0:
bfd_put_8 (in_abfd, val, data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_WORD1:
bfd_put_16 (in_abfd, val >> 16, data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_IMM16:
if (reloc->howto->partial_inplace)
val += bfd_get_16 ( in_abfd, data+*src_ptr) & reloc->howto->src_mask;
/* Fall through. */
case R_WORD0:
bfd_put_16 (in_abfd, val, data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_IMM24:
if (reloc->howto->partial_inplace)
val += (bfd_get_16 ( in_abfd, data+*src_ptr)
+ (bfd_get_8 ( in_abfd, data+*src_ptr+2) << 16))
& reloc->howto->src_mask;
bfd_put_16 (in_abfd, val, data + *dst_ptr);
bfd_put_8 (in_abfd, val >> 16, data + *dst_ptr+2);
(*dst_ptr) += 3;
(*src_ptr) += 3;
break;
case R_IMM32:
if (reloc->howto->partial_inplace)
val += bfd_get_32 ( in_abfd, data+*src_ptr) & reloc->howto->src_mask;
bfd_put_32 (in_abfd, val, data + *dst_ptr);
(*dst_ptr) += 4;
(*src_ptr) += 4;
break;
case R_JR:
{
if (reloc->howto->partial_inplace)
val += (signed char)(bfd_get_8 ( in_abfd, data+*src_ptr)
& reloc->howto->src_mask);
bfd_vma dot = (*dst_ptr
+ input_section->output_offset
+ input_section->output_section->vma);
int gap = val - dot;
if (gap >= 128 || gap < -128)
(*link_info->callbacks->reloc_overflow)
(link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr),
reloc->howto->name, reloc->addend, input_section->owner,
input_section, reloc->address);
bfd_put_8 (in_abfd, gap, data + *dst_ptr);
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_IMM16BE:
if (reloc->howto->partial_inplace)
val += (bfd_get_8 ( in_abfd, data+*src_ptr+0) * 0x100 +
bfd_get_8 ( in_abfd, data+*src_ptr+1)) & reloc->howto->src_mask;
bfd_put_8 (in_abfd, val >> 8, data + *dst_ptr+0);
bfd_put_8 (in_abfd, val, data + *dst_ptr+1);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
default:
abort ();
}
}
static int
z80_is_local_label_name (bfd * abfd ATTRIBUTE_UNUSED,
const char * name)
{
return (name[0] == '.' && name[1] == 'L') ||
_bfd_coff_is_local_label_name (abfd, name);
}
#define coff_bfd_is_local_label_name z80_is_local_label_name
#define coff_reloc16_extra_cases extra_case
#define coff_bfd_reloc_type_lookup coff_z80_reloc_type_lookup
#define coff_bfd_reloc_name_lookup coff_z80_reloc_name_lookup
#ifndef bfd_pe_print_pdata
#define bfd_pe_print_pdata NULL
#endif
#include "coffcode.h"
#undef coff_bfd_get_relocated_section_contents
#define coff_bfd_get_relocated_section_contents \
bfd_coff_reloc16_get_relocated_section_contents
#undef coff_bfd_relax_section
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
CREATE_LITTLE_COFF_TARGET_VEC (z80_coff_vec, "coff-z80", 0,
SEC_CODE | SEC_DATA, '\0', NULL,
COFF_SWAP_TABLE)
|
