source: trunk/src/binutils/bfd/coff-h8500.c@ 73

Last change on this file since 73 was 10, checked in by bird, 23 years ago

Initial revision
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File size: 8.4 KB
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1/* BFD back-end for Hitachi H8/500 COFF binaries.
2 Copyright 1993, 1994, 1995, 1997, 1999, 2000
3 Free Software Foundation, Inc.
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/h8500.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_imm8 =
34HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
35 complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);
36
37static reloc_howto_type r_imm16 =
38HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
39 complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);
40
41static reloc_howto_type r_imm24 =
42HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
43 complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);
44
45static reloc_howto_type r_imm32 =
46HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
47 complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);
48
49static reloc_howto_type r_high8 =
50HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
51 complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);
52
53static reloc_howto_type r_low16 =
54HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
55 complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
56
57static reloc_howto_type r_pcrel8 =
58HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);
59
60static reloc_howto_type r_pcrel16 =
61HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);
62
63static reloc_howto_type r_high16 =
64HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
65 complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);
66
67/* Turn a howto into a reloc number */
68
69static int
70coff_h8500_select_reloc (howto)
71 reloc_howto_type *howto;
72{
73 return howto->type;
74}
75
76#define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
77
78#define BADMAG(x) H8500BADMAG(x)
79#define H8500 1 /* Customize coffcode.h */
80
81#define __A_MAGIC_SET__
82
83/* Code to swap in the reloc */
84#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
85#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
86#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
87 dst->r_stuff[0] = 'S'; \
88 dst->r_stuff[1] = 'C';
89
90/* Code to turn a r_type into a howto ptr, uses the above howto table
91 */
92
93static void
94rtype2howto(internal, dst)
95 arelent * internal;
96 struct internal_reloc *dst;
97{
98 switch (dst->r_type)
99 {
100 default:
101 abort ();
102 break;
103 case R_H8500_IMM8:
104 internal->howto = &r_imm8;
105 break;
106 case R_H8500_IMM16:
107 internal->howto = &r_imm16;
108 break;
109 case R_H8500_IMM24:
110 internal->howto = &r_imm24;
111 break;
112 case R_H8500_IMM32:
113 internal->howto = &r_imm32;
114 break;
115 case R_H8500_PCREL8:
116 internal->howto = &r_pcrel8;
117 break;
118 case R_H8500_PCREL16:
119 internal->howto = &r_pcrel16;
120 break;
121 case R_H8500_HIGH8:
122 internal->howto = &r_high8;
123 break;
124 case R_H8500_HIGH16:
125 internal->howto = &r_high16;
126 break;
127 case R_H8500_LOW16:
128 internal->howto = &r_low16;
129 break;
130 }
131}
132
133#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
134
135/* Perform any necessary magic to the addend in a reloc entry */
136
137#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
138 cache_ptr->addend = ext_reloc.r_offset;
139
140#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
141 reloc_processing(relent, reloc, symbols, abfd, section)
142
143static void reloc_processing (relent, reloc, symbols, abfd, section)
144 arelent * relent;
145 struct internal_reloc *reloc;
146 asymbol ** symbols;
147 bfd * abfd;
148 asection * section;
149{
150 relent->address = reloc->r_vaddr;
151 rtype2howto (relent, reloc);
152
153 if (reloc->r_symndx > 0)
154 {
155 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
156 }
157 else
158 {
159 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
160 }
161
162 relent->addend = reloc->r_offset;
163 relent->address -= section->vma;
164}
165
166static void
167extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
168 bfd *in_abfd;
169 struct bfd_link_info *link_info;
170 struct bfd_link_order *link_order;
171 arelent *reloc;
172 bfd_byte *data;
173 unsigned int *src_ptr;
174 unsigned int *dst_ptr;
175{
176 bfd_byte *d = data+*dst_ptr;
177 asection *input_section = link_order->u.indirect.section;
178 switch (reloc->howto->type)
179 {
180 case R_H8500_IMM8:
181 bfd_put_8 (in_abfd,
182 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
183 d);
184 (*dst_ptr) += 1;
185 (*src_ptr) += 1;
186 break;
187
188 case R_H8500_HIGH8:
189 bfd_put_8 (in_abfd,
190 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
191 >> 16),
192 d );
193 (*dst_ptr) += 1;
194 (*src_ptr) += 1;
195 break;
196
197 case R_H8500_IMM16:
198 bfd_put_16 (in_abfd,
199 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
200 d );
201 (*dst_ptr) += 2;
202 (*src_ptr) += 2;
203 break;
204
205 case R_H8500_LOW16:
206 bfd_put_16 (in_abfd,
207 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
208 d);
209
210 (*dst_ptr) += 2;
211 (*src_ptr) += 2;
212 break;
213
214 case R_H8500_HIGH16:
215 bfd_put_16 (in_abfd,
216 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
217 >>16),
218 d);
219
220 (*dst_ptr) += 2;
221 (*src_ptr) += 2;
222 break;
223
224 case R_H8500_IMM24:
225 {
226 int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
227 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
228 v = (v & 0x00ffffff) | (o & 0xff00000);
229 bfd_put_32 (in_abfd, v, data + *dst_ptr -1);
230 (*dst_ptr) +=3;
231 (*src_ptr)+=3;;
232 }
233 break;
234 case R_H8500_IMM32:
235 {
236 int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
237 bfd_put_32 (in_abfd, v, data + *dst_ptr);
238 (*dst_ptr) +=4;
239 (*src_ptr)+=4;;
240 }
241 break;
242
243 case R_H8500_PCREL8:
244 {
245 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
246 input_section);
247 bfd_vma dot = link_order->offset
248 + *dst_ptr
249 + link_order->u.indirect.section->output_section->vma;
250 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
251 word and the pc's been incremented */
252
253 if (gap > 128 || gap < -128)
254 {
255 if (! ((*link_info->callbacks->reloc_overflow)
256 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
257 reloc->howto->name, reloc->addend, input_section->owner,
258 input_section, reloc->address)))
259 abort ();
260 }
261 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
262 (*dst_ptr)++;
263 (*src_ptr)++;
264 break;
265 }
266 case R_H8500_PCREL16:
267 {
268 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
269 input_section);
270 bfd_vma dot = link_order->offset
271 + *dst_ptr
272 + link_order->u.indirect.section->output_section->vma;
273 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
274 word and the pc's been incremented */
275
276 if (gap > 32767 || gap < -32768)
277 {
278 if (! ((*link_info->callbacks->reloc_overflow)
279 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
280 reloc->howto->name, reloc->addend, input_section->owner,
281 input_section, reloc->address)))
282 abort ();
283 }
284 bfd_put_16 (in_abfd, gap, data + *dst_ptr);
285 (*dst_ptr)+=2;
286 (*src_ptr)+=2;
287 break;
288 }
289
290 default:
291 abort ();
292 }
293}
294
295#define coff_reloc16_extra_cases extra_case
296
297#include "coffcode.h"
298
299#undef coff_bfd_get_relocated_section_contents
300#undef coff_bfd_relax_section
301#define coff_bfd_get_relocated_section_contents \
302 bfd_coff_reloc16_get_relocated_section_contents
303#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
304
305CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)
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