* scripttempl/elf.sc: Move non-text .dynamic section before
[deliverable/binutils-gdb.git] / bfd / coff-z8k.c
CommitLineData
252b5132 1/* BFD back-end for Zilog Z800n COFF binaries.
879db8be 2 Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001
7898deda 3 Free Software Foundation, Inc.
252b5132
RH
4 Contributed by Cygnus Support.
5 Written by Steve Chamberlain, <sac@cygnus.com>.
6
7This file is part of BFD, the Binary File Descriptor library.
8
9This program is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 2 of the License, or
12(at your option) any later version.
13
14This program is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with this program; if not, write to the Free Software
21Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22
23#include "bfd.h"
24#include "sysdep.h"
25#include "libbfd.h"
26#include "bfdlink.h"
27#include "coff/z8k.h"
28#include "coff/internal.h"
29#include "libcoff.h"
30
31#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
32
33static reloc_howto_type r_imm32 =
879db8be 34HOWTO (R_IMM32, 0, 2, 32, false, 0,
252b5132
RH
35 complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
36 0xffffffff, false);
37
38static reloc_howto_type r_imm4l =
879db8be 39HOWTO (R_IMM4L, 0, 0, 4, false, 0,
252b5132
RH
40 complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
41
42static reloc_howto_type r_da =
43HOWTO (R_IMM16, 0, 1, 16, false, 0,
44 complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
45 false);
46
47static reloc_howto_type r_imm8 =
879db8be 48HOWTO (R_IMM8, 0, 0, 8, false, 0,
252b5132
RH
49 complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
50 false);
51
6840198f
NC
52static reloc_howto_type r_rel16 =
53HOWTO (R_REL16, 0, 1, 16, false, 0,
54 complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff,
55 true);
56
252b5132 57static reloc_howto_type r_jr =
879db8be 58HOWTO (R_JR, 0, 0, 8, true, 0, complain_overflow_signed, 0,
252b5132
RH
59 "r_jr", true, 0, 0, true);
60
6840198f 61static reloc_howto_type r_disp7 =
879db8be 62HOWTO (R_DISP7, 0, 0, 7, true, 0, complain_overflow_bitfield, 0,
6840198f
NC
63 "r_disp7", true, 0, 0, true);
64
65static reloc_howto_type r_callr =
66HOWTO (R_CALLR, 0, 1, 12, true, 0, complain_overflow_signed, 0,
67 "r_callr", true, 0xfff, 0xfff, true);
68
252b5132
RH
69/* Turn a howto into a reloc number */
70
cbfe05c4 71static int
252b5132
RH
72coff_z8k_select_reloc (howto)
73 reloc_howto_type *howto;
74{
75 return howto->type;
76}
77
78#define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
79
252b5132
RH
80#define BADMAG(x) Z8KBADMAG(x)
81#define Z8K 1 /* Customize coffcode.h */
82#define __A_MAGIC_SET__
83
252b5132
RH
84/* Code to swap in the reloc */
85#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
86#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
87#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
88 dst->r_stuff[0] = 'S'; \
89 dst->r_stuff[1] = 'C';
90
91/* Code to turn a r_type into a howto ptr, uses the above howto table
92 */
93
94static void
95rtype2howto (internal, dst)
96 arelent * internal;
97 struct internal_reloc *dst;
98{
99 switch (dst->r_type)
100 {
101 default:
102 abort ();
103 break;
104 case R_IMM8:
105 internal->howto = &r_imm8;
106 break;
107 case R_IMM16:
108 internal->howto = &r_da;
109 break;
110 case R_JR:
111 internal->howto = &r_jr;
112 break;
6840198f
NC
113 case R_DISP7:
114 internal->howto = &r_disp7;
115 break;
116 case R_CALLR:
117 internal->howto = &r_callr;
118 break;
119 case R_REL16:
120 internal->howto = &r_rel16;
121 break;
252b5132
RH
122 case R_IMM32:
123 internal->howto = &r_imm32;
124 break;
125 case R_IMM4L:
126 internal->howto = &r_imm4l;
127 break;
128 }
129}
130
131#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
132
252b5132
RH
133/* Perform any necessary magic to the addend in a reloc entry */
134
252b5132
RH
135#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
136 cache_ptr->addend = ext_reloc.r_offset;
137
252b5132
RH
138#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
139 reloc_processing(relent, reloc, symbols, abfd, section)
140
cbfe05c4 141static void
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RH
142reloc_processing (relent, reloc, symbols, abfd, section)
143 arelent * relent;
879db8be 144 struct internal_reloc * reloc;
252b5132
RH
145 asymbol ** symbols;
146 bfd * abfd;
147 asection * section;
148{
149 relent->address = reloc->r_vaddr;
150 rtype2howto (relent, reloc);
151
152 if (reloc->r_symndx > 0)
879db8be 153 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
252b5132 154 else
879db8be 155 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
252b5132 156
252b5132
RH
157 relent->addend = reloc->r_offset;
158 relent->address -= section->vma;
159}
160
161static void
162extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
879db8be
NC
163 bfd * in_abfd;
164 struct bfd_link_info * link_info;
165 struct bfd_link_order * link_order;
166 arelent * reloc;
167 bfd_byte * data;
168 unsigned int * src_ptr;
169 unsigned int * dst_ptr;
252b5132 170{
879db8be 171 asection * input_section = link_order->u.indirect.section;
252b5132
RH
172
173 switch (reloc->howto->type)
174 {
175 case R_IMM8:
176 bfd_put_8 (in_abfd,
177 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
178 data + *dst_ptr);
179 (*dst_ptr) += 1;
180 (*src_ptr) += 1;
181 break;
182
183 case R_IMM32:
184 bfd_put_32 (in_abfd,
879db8be
NC
185 /* 0x80000000 indicates a long segmented address. */
186 bfd_coff_reloc16_get_value (reloc, link_info, input_section) | 0x80000000,
252b5132
RH
187 data + *dst_ptr);
188 (*dst_ptr) += 4;
189 (*src_ptr) += 4;
190 break;
191
192 case R_IMM4L:
193 bfd_put_8 (in_abfd,
cbfe05c4 194 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
252b5132
RH
195 | (0x0f
196 & bfd_coff_reloc16_get_value (reloc, link_info,
197 input_section))),
198 data + *dst_ptr);
199 (*dst_ptr) += 1;
200 (*src_ptr) += 1;
201 break;
202
203 case R_IMM16:
204 bfd_put_16 (in_abfd,
205 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
206 data + *dst_ptr);
207 (*dst_ptr) += 2;
208 (*src_ptr) += 2;
209 break;
210
211 case R_JR:
212 {
213 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
214 input_section);
215 bfd_vma dot = (link_order->offset
216 + *dst_ptr
217 + input_section->output_section->vma);
879db8be
NC
218 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
219 word and the pc's been incremented. */
252b5132
RH
220
221 if (gap & 1)
222 abort ();
223 gap /= 2;
224 if (gap > 128 || gap < -128)
225 {
226 if (! ((*link_info->callbacks->reloc_overflow)
227 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
228 reloc->howto->name, reloc->addend, input_section->owner,
229 input_section, reloc->address)))
230 abort ();
231 }
232 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
233 (*dst_ptr)++;
234 (*src_ptr)++;
235 break;
236 }
6840198f
NC
237
238 case R_DISP7:
239 {
240 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
241 input_section);
242 bfd_vma dot = (link_order->offset
243 + *dst_ptr
244 + input_section->output_section->vma);
879db8be
NC
245 int gap = dst - dot - 1; /* -1, since we're in the odd byte of the
246 word and the pc's been incremented. */
6840198f
NC
247
248 if (gap & 1)
249 abort ();
250 gap /= 2;
251
252 if (gap > 0 || gap < -128)
253 {
254 if (! ((*link_info->callbacks->reloc_overflow)
255 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
256 reloc->howto->name, reloc->addend, input_section->owner,
257 input_section, reloc->address)))
258 abort ();
259 }
260 bfd_put_8 (in_abfd,
261 (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f),
262 data + *dst_ptr);
263 (*dst_ptr)++;
264 (*src_ptr)++;
265 break;
266 }
267
268 case R_CALLR:
269 {
270 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
271 input_section);
272 bfd_vma dot = (link_order->offset
273 + *dst_ptr
274 + input_section->output_section->vma);
275 int gap = dst - dot - 2;
276
277 if (gap & 1)
278 abort ();
279 gap /= 2;
280 if (gap > 8191 || gap < -8192)
281 {
282 if (! ((*link_info->callbacks->reloc_overflow)
283 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
284 reloc->howto->name, reloc->addend, input_section->owner,
285 input_section, reloc->address)))
286 abort ();
287 }
288 bfd_put_16 (in_abfd,
289 (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff),
290 data + *dst_ptr);
291 (*dst_ptr) += 2;
292 (*src_ptr) += 2;
293 break;
294 }
295
296 case R_REL16:
297 {
298 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
299 input_section);
300 bfd_vma dot = (link_order->offset
301 + *dst_ptr
302 + input_section->output_section->vma);
303 int gap = dst - dot - 2;
304
305 if (gap > 32767 || gap < -32768)
306 {
307 if (! ((*link_info->callbacks->reloc_overflow)
308 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
309 reloc->howto->name, reloc->addend, input_section->owner,
310 input_section, reloc->address)))
311 abort ();
312 }
313 bfd_put_16 (in_abfd,gap,data + *dst_ptr);
314 (*dst_ptr) += 2;
315 (*src_ptr) += 2;
316 break;
317 }
879db8be 318
252b5132
RH
319 default:
320 abort ();
321 }
322}
323
324#define coff_reloc16_extra_cases extra_case
325
326#include "coffcode.h"
327
252b5132
RH
328#undef coff_bfd_get_relocated_section_contents
329#undef coff_bfd_relax_section
330#define coff_bfd_get_relocated_section_contents \
331 bfd_coff_reloc16_get_relocated_section_contents
332#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
333
c3c89269 334CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL)
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