source: trunk/src/binutils/bfd/coff-h8500.c@ 636

Last change on this file since 636 was 610, checked in by bird, 22 years ago

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1/* BFD back-end for Renesas H8/500 COFF binaries.
2 Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 Written by Steve Chamberlain, <sac@cygnus.com>.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
13
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, 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/h8500.h"
28#include "coff/internal.h"
29#include "libcoff.h"
30
31static int coff_h8500_select_reloc PARAMS ((reloc_howto_type *));
32static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
33static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
34static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
35
36#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
37
38static reloc_howto_type r_imm8 =
39HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0,
40 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE);
41
42static reloc_howto_type r_imm16 =
43HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0,
44 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
45
46static reloc_howto_type r_imm24 =
47HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0,
48 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE);
49
50static reloc_howto_type r_imm32 =
51HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0,
52 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE);
53
54static reloc_howto_type r_high8 =
55HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0,
56 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE);
57
58static reloc_howto_type r_low16 =
59HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0,
60 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
61
62static reloc_howto_type r_pcrel8 =
63HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE);
64
65static reloc_howto_type r_pcrel16 =
66HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE);
67
68static reloc_howto_type r_high16 =
69HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0,
70 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE);
71
72
73/* Turn a howto into a reloc number. */
74
75static int
76coff_h8500_select_reloc (howto)
77 reloc_howto_type *howto;
78{
79 return howto->type;
80}
81
82#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
83
84#define BADMAG(x) H8500BADMAG(x)
85#define H8500 1 /* Customize coffcode.h */
86
87#define __A_MAGIC_SET__
88
89/* Code to swap in the reloc. */
90#define SWAP_IN_RELOC_OFFSET H_GET_32
91#define SWAP_OUT_RELOC_OFFSET H_PUT_32
92#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
93 dst->r_stuff[0] = 'S'; \
94 dst->r_stuff[1] = 'C';
95
96/* Code to turn a r_type into a howto ptr, uses the above howto table. */
97
98static void
99rtype2howto (internal, dst)
100 arelent * internal;
101 struct internal_reloc *dst;
102{
103 switch (dst->r_type)
104 {
105 default:
106 abort ();
107 break;
108 case R_H8500_IMM8:
109 internal->howto = &r_imm8;
110 break;
111 case R_H8500_IMM16:
112 internal->howto = &r_imm16;
113 break;
114 case R_H8500_IMM24:
115 internal->howto = &r_imm24;
116 break;
117 case R_H8500_IMM32:
118 internal->howto = &r_imm32;
119 break;
120 case R_H8500_PCREL8:
121 internal->howto = &r_pcrel8;
122 break;
123 case R_H8500_PCREL16:
124 internal->howto = &r_pcrel16;
125 break;
126 case R_H8500_HIGH8:
127 internal->howto = &r_high8;
128 break;
129 case R_H8500_HIGH16:
130 internal->howto = &r_high16;
131 break;
132 case R_H8500_LOW16:
133 internal->howto = &r_low16;
134 break;
135 }
136}
137
138#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
139
140/* Perform any necessary magic to the addend in a reloc entry. */
141
142#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
143 cache_ptr->addend = ext_reloc.r_offset;
144
145#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
146 reloc_processing(relent, reloc, symbols, abfd, section)
147
148static void reloc_processing (relent, reloc, symbols, abfd, section)
149 arelent * relent;
150 struct internal_reloc *reloc;
151 asymbol ** symbols;
152 bfd * abfd;
153 asection * section;
154{
155 relent->address = reloc->r_vaddr;
156 rtype2howto (relent, reloc);
157
158 if (reloc->r_symndx > 0)
159 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
160 else
161 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
162
163 relent->addend = reloc->r_offset;
164 relent->address -= section->vma;
165}
166
167static void
168extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
169 bfd *in_abfd;
170 struct bfd_link_info *link_info;
171 struct bfd_link_order *link_order;
172 arelent *reloc;
173 bfd_byte *data;
174 unsigned int *src_ptr;
175 unsigned int *dst_ptr;
176{
177 bfd_byte *d = data+*dst_ptr;
178 asection *input_section = link_order->u.indirect.section;
179
180 switch (reloc->howto->type)
181 {
182 case R_H8500_IMM8:
183 bfd_put_8 (in_abfd,
184 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
185 d);
186 (*dst_ptr) += 1;
187 (*src_ptr) += 1;
188 break;
189
190 case R_H8500_HIGH8:
191 bfd_put_8 (in_abfd,
192 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
193 >> 16),
194 d);
195 (*dst_ptr) += 1;
196 (*src_ptr) += 1;
197 break;
198
199 case R_H8500_IMM16:
200 bfd_put_16 (in_abfd,
201 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
202 d);
203 (*dst_ptr) += 2;
204 (*src_ptr) += 2;
205 break;
206
207 case R_H8500_LOW16:
208 bfd_put_16 (in_abfd,
209 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
210 d);
211
212 (*dst_ptr) += 2;
213 (*src_ptr) += 2;
214 break;
215
216 case R_H8500_HIGH16:
217 bfd_put_16 (in_abfd,
218 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
219 >> 16),
220 d);
221
222 (*dst_ptr) += 2;
223 (*src_ptr) += 2;
224 break;
225
226 case R_H8500_IMM24:
227 {
228 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
229 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
230 v = (v & 0x00ffffff) | (o & 0xff00000);
231 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1);
232 (*dst_ptr) += 3;
233 (*src_ptr) += 3;;
234 }
235 break;
236 case R_H8500_IMM32:
237 {
238 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
239 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr);
240 (*dst_ptr) += 4;
241 (*src_ptr) += 4;;
242 }
243 break;
244
245 case R_H8500_PCREL8:
246 {
247 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
248 input_section);
249 bfd_vma dot = link_order->offset
250 + *dst_ptr
251 + link_order->u.indirect.section->output_section->vma;
252 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
253 word and the pc's been incremented. */
254
255 if (gap > 128 || gap < -128)
256 {
257 if (! ((*link_info->callbacks->reloc_overflow)
258 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
259 reloc->howto->name, reloc->addend, input_section->owner,
260 input_section, reloc->address)))
261 abort ();
262 }
263 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
264 (*dst_ptr)++;
265 (*src_ptr)++;
266 break;
267 }
268 case R_H8500_PCREL16:
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 + link_order->u.indirect.section->output_section->vma;
275 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
276 word and the pc's been incremented. */
277
278 if (gap > 32767 || gap < -32768)
279 {
280 if (! ((*link_info->callbacks->reloc_overflow)
281 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
282 reloc->howto->name, reloc->addend, input_section->owner,
283 input_section, reloc->address)))
284 abort ();
285 }
286 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
287 (*dst_ptr) += 2;
288 (*src_ptr) += 2;
289 break;
290 }
291
292 default:
293 abort ();
294 }
295}
296
297#define coff_reloc16_extra_cases extra_case
298
299#include "coffcode.h"
300
301#undef coff_bfd_get_relocated_section_contents
302#undef coff_bfd_relax_section
303#define coff_bfd_get_relocated_section_contents \
304 bfd_coff_reloc16_get_relocated_section_contents
305#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
306
307CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)
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