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
31 static int coff_h8500_select_reloc PARAMS ((reloc_howto_type *));
32 static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
33 static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
34 static 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
38 static reloc_howto_type r_imm8 =
39 HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0,
40 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE);
41
42 static reloc_howto_type r_imm16 =
43 HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0,
44 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
45
46 static reloc_howto_type r_imm24 =
47 HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0,
48 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE);
49
50 static reloc_howto_type r_imm32 =
51 HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0,
52 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE);
53
54 static reloc_howto_type r_high8 =
55 HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0,
56 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE);
57
58 static reloc_howto_type r_low16 =
59 HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0,
60 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
61
62 static reloc_howto_type r_pcrel8 =
63 HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE);
64
65 static reloc_howto_type r_pcrel16 =
66 HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE);
67
68 static reloc_howto_type r_high16 =
69 HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0,
70 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE);
71
72 /* Turn a howto into a reloc number. */
73
74 static int
coff_h8500_select_reloc(howto)75 coff_h8500_select_reloc (howto)
76 reloc_howto_type *howto;
77 {
78 return howto->type;
79 }
80
81 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
82
83 #define BADMAG(x) H8500BADMAG(x)
84 #define H8500 1 /* Customize coffcode.h */
85
86 #define __A_MAGIC_SET__
87
88 /* Code to swap in the reloc. */
89 #define SWAP_IN_RELOC_OFFSET H_GET_32
90 #define SWAP_OUT_RELOC_OFFSET H_PUT_32
91 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
92 dst->r_stuff[0] = 'S'; \
93 dst->r_stuff[1] = 'C';
94
95 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
96
97 static void
rtype2howto(internal,dst)98 rtype2howto (internal, dst)
99 arelent * internal;
100 struct internal_reloc *dst;
101 {
102 switch (dst->r_type)
103 {
104 default:
105 abort ();
106 break;
107 case R_H8500_IMM8:
108 internal->howto = &r_imm8;
109 break;
110 case R_H8500_IMM16:
111 internal->howto = &r_imm16;
112 break;
113 case R_H8500_IMM24:
114 internal->howto = &r_imm24;
115 break;
116 case R_H8500_IMM32:
117 internal->howto = &r_imm32;
118 break;
119 case R_H8500_PCREL8:
120 internal->howto = &r_pcrel8;
121 break;
122 case R_H8500_PCREL16:
123 internal->howto = &r_pcrel16;
124 break;
125 case R_H8500_HIGH8:
126 internal->howto = &r_high8;
127 break;
128 case R_H8500_HIGH16:
129 internal->howto = &r_high16;
130 break;
131 case R_H8500_LOW16:
132 internal->howto = &r_low16;
133 break;
134 }
135 }
136
137 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
138
139 /* Perform any necessary magic to the addend in a reloc entry. */
140
141 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
142 cache_ptr->addend = ext_reloc.r_offset;
143
144 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
145 reloc_processing(relent, reloc, symbols, abfd, section)
146
reloc_processing(relent,reloc,symbols,abfd,section)147 static void reloc_processing (relent, reloc, symbols, abfd, section)
148 arelent * relent;
149 struct internal_reloc *reloc;
150 asymbol ** symbols;
151 bfd * abfd;
152 asection * section;
153 {
154 relent->address = reloc->r_vaddr;
155 rtype2howto (relent, reloc);
156
157 if (reloc->r_symndx > 0)
158 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
159 else
160 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
161
162 relent->addend = reloc->r_offset;
163 relent->address -= section->vma;
164 }
165
166 static void
extra_case(in_abfd,link_info,link_order,reloc,data,src_ptr,dst_ptr)167 extra_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
179 switch (reloc->howto->type)
180 {
181 case R_H8500_IMM8:
182 bfd_put_8 (in_abfd,
183 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
184 d);
185 (*dst_ptr) += 1;
186 (*src_ptr) += 1;
187 break;
188
189 case R_H8500_HIGH8:
190 bfd_put_8 (in_abfd,
191 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
192 >> 16),
193 d);
194 (*dst_ptr) += 1;
195 (*src_ptr) += 1;
196 break;
197
198 case R_H8500_IMM16:
199 bfd_put_16 (in_abfd,
200 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
201 d);
202 (*dst_ptr) += 2;
203 (*src_ptr) += 2;
204 break;
205
206 case R_H8500_LOW16:
207 bfd_put_16 (in_abfd,
208 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
209 d);
210
211 (*dst_ptr) += 2;
212 (*src_ptr) += 2;
213 break;
214
215 case R_H8500_HIGH16:
216 bfd_put_16 (in_abfd,
217 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
218 >> 16),
219 d);
220
221 (*dst_ptr) += 2;
222 (*src_ptr) += 2;
223 break;
224
225 case R_H8500_IMM24:
226 {
227 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
228 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
229 v = (v & 0x00ffffff) | (o & 0xff00000);
230 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1);
231 (*dst_ptr) += 3;
232 (*src_ptr) += 3;;
233 }
234 break;
235 case R_H8500_IMM32:
236 {
237 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
238 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr);
239 (*dst_ptr) += 4;
240 (*src_ptr) += 4;;
241 }
242 break;
243
244 case R_H8500_PCREL8:
245 {
246 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
247 input_section);
248 bfd_vma dot = link_order->offset
249 + *dst_ptr
250 + link_order->u.indirect.section->output_section->vma;
251 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
252 word and the pc's been incremented. */
253
254 if (gap > 128 || gap < -128)
255 {
256 if (! ((*link_info->callbacks->reloc_overflow)
257 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
258 reloc->howto->name, reloc->addend, input_section->owner,
259 input_section, reloc->address)))
260 abort ();
261 }
262 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
263 (*dst_ptr)++;
264 (*src_ptr)++;
265 break;
266 }
267 case R_H8500_PCREL16:
268 {
269 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
270 input_section);
271 bfd_vma dot = link_order->offset
272 + *dst_ptr
273 + link_order->u.indirect.section->output_section->vma;
274 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
275 word and the pc's been incremented. */
276
277 if (gap > 32767 || gap < -32768)
278 {
279 if (! ((*link_info->callbacks->reloc_overflow)
280 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
281 reloc->howto->name, reloc->addend, input_section->owner,
282 input_section, reloc->address)))
283 abort ();
284 }
285 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
286 (*dst_ptr) += 2;
287 (*src_ptr) += 2;
288 break;
289 }
290
291 default:
292 abort ();
293 }
294 }
295
296 #define coff_reloc16_extra_cases extra_case
297
298 #include "coffcode.h"
299
300 #undef coff_bfd_get_relocated_section_contents
301 #undef coff_bfd_relax_section
302 #define coff_bfd_get_relocated_section_contents \
303 bfd_coff_reloc16_get_relocated_section_contents
304 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
305
306 CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE)
307