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
|
/* BFD back-end for Zilog Z800n COFF binaries.
Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003,
2004 Free Software Foundation, Inc.
Contributed by Cygnus Support.
Written by Steve Chamberlain, <sac@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., 59 Temple Place - Suite 330, Boston, MA 02110-1301, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "bfdlink.h"
#include "coff/z8k.h"
#include "coff/internal.h"
#include "libcoff.h"
#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
static reloc_howto_type r_imm32 =
HOWTO (R_IMM32, 0, 2, 32, FALSE, 0,
complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff,
0xffffffff, FALSE);
static reloc_howto_type r_imm4l =
HOWTO (R_IMM4L, 0, 0, 4, FALSE, 0,
complain_overflow_bitfield, 0, "r_imm4l", TRUE, 0xf, 0xf, FALSE);
static reloc_howto_type r_da =
HOWTO (R_IMM16, 0, 1, 16, FALSE, 0,
complain_overflow_bitfield, 0, "r_da", TRUE, 0x0000ffff, 0x0000ffff,
FALSE);
static reloc_howto_type r_imm8 =
HOWTO (R_IMM8, 0, 0, 8, FALSE, 0,
complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff,
FALSE);
static reloc_howto_type r_rel16 =
HOWTO (R_REL16, 0, 1, 16, FALSE, 0,
complain_overflow_bitfield, 0, "r_rel16", TRUE, 0x0000ffff, 0x0000ffff,
TRUE);
static reloc_howto_type r_jr =
HOWTO (R_JR, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,
"r_jr", TRUE, 0, 0, TRUE);
static reloc_howto_type r_disp7 =
HOWTO (R_DISP7, 0, 0, 7, TRUE, 0, complain_overflow_bitfield, 0,
"r_disp7", TRUE, 0, 0, TRUE);
static reloc_howto_type r_callr =
HOWTO (R_CALLR, 0, 1, 12, TRUE, 0, complain_overflow_signed, 0,
"r_callr", TRUE, 0xfff, 0xfff, TRUE);
/* Turn a howto into a reloc number */
static int
coff_z8k_select_reloc (reloc_howto_type *howto)
{
return howto->type;
}
#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
#define BADMAG(x) Z8KBADMAG(x)
#define Z8K 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)
{
switch (dst->r_type)
{
default:
abort ();
break;
case R_IMM8:
internal->howto = &r_imm8;
break;
case R_IMM16:
internal->howto = &r_da;
break;
case R_JR:
internal->howto = &r_jr;
break;
case R_DISP7:
internal->howto = &r_disp7;
break;
case R_CALLR:
internal->howto = &r_callr;
break;
case R_REL16:
internal->howto = &r_rel16;
break;
case R_IMM32:
internal->howto = &r_imm32;
break;
case R_IMM4L:
internal->howto = &r_imm4l;
break;
}
}
#define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry)
/* 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;
switch (reloc->howto->type)
{
case R_IMM8:
bfd_put_8 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_IMM32:
/* If no flags are set, assume immediate value. */
if (! (*reloc->sym_ptr_ptr)->section->flags)
{
bfd_put_32 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info,
input_section),
data + *dst_ptr);
}
else
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
/* Addresses are 23 bit, and the layout of those in a 32-bit
value is as follows:
1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA
(A - address bits, x - ignore). */
dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000;
bfd_put_32 (in_abfd, dst, data + *dst_ptr);
}
(*dst_ptr) += 4;
(*src_ptr) += 4;
break;
case R_IMM4L:
bfd_put_8 (in_abfd,
((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
| (0x0f
& bfd_coff_reloc16_get_value (reloc, link_info,
input_section))),
data + *dst_ptr);
(*dst_ptr) += 1;
(*src_ptr) += 1;
break;
case R_IMM16:
bfd_put_16 (in_abfd,
bfd_coff_reloc16_get_value (reloc, link_info, input_section),
data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
case R_JR:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
word and the pc's been incremented. */
if (gap & 1)
abort ();
gap /= 2;
if (gap > 128 || gap < -128)
{
if (! ((*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)))
abort ();
}
bfd_put_8 (in_abfd, gap, data + *dst_ptr);
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_DISP7:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
word and the pc's been incremented. */
if (gap & 1)
abort ();
gap /= 2;
if (gap > 0 || gap < -127)
{
if (! ((*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)))
abort ();
}
bfd_put_8 (in_abfd,
(bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
data + *dst_ptr);
(*dst_ptr)++;
(*src_ptr)++;
break;
}
case R_CALLR:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
int gap = dst - dot - 2;
if (gap & 1)
abort ();
if (gap > 4096 || gap < -4095)
{
if (! ((*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)))
abort ();
}
gap /= 2;
bfd_put_16 (in_abfd,
(bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff),
data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
}
case R_REL16:
{
bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
input_section);
bfd_vma dot = (link_order->offset
+ *dst_ptr
+ input_section->output_section->vma);
int gap = dst - dot - 2;
if (gap > 32767 || gap < -32768)
{
if (! ((*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)))
abort ();
}
bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
(*dst_ptr) += 2;
(*src_ptr) += 2;
break;
}
default:
abort ();
}
}
#define coff_reloc16_extra_cases extra_case
#include "coffcode.h"
#undef coff_bfd_get_relocated_section_contents
#undef coff_bfd_relax_section
#define coff_bfd_get_relocated_section_contents \
bfd_coff_reloc16_get_relocated_section_contents
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE)
|
