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252b5132 RH |
1 | /* BFD back-end for Hitachi H8/500 COFF binaries. |
2 | Copyright 1993, 94, 95, 1997 Free Software Foundation, Inc. | |
3 | Contributed by Cygnus Support. | |
4 | Written by Steve Chamberlain, <sac@cygnus.com>. | |
5 | ||
6 | This file is part of BFD, the Binary File Descriptor library. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
24 | #include "libbfd.h" | |
25 | #include "bfdlink.h" | |
26 | #include "coff/h8500.h" | |
27 | #include "coff/internal.h" | |
28 | #include "libcoff.h" | |
29 | ||
30 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) | |
31 | ||
32 | static reloc_howto_type r_imm8 = | |
33 | HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0, | |
34 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false); | |
35 | ||
36 | static reloc_howto_type r_imm16 = | |
37 | HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0, | |
38 | complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false); | |
39 | ||
40 | static reloc_howto_type r_imm24 = | |
41 | HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0, | |
42 | complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false); | |
43 | ||
44 | static reloc_howto_type r_imm32 = | |
45 | HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0, | |
46 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false); | |
47 | ||
48 | ||
49 | static reloc_howto_type r_high8 = | |
50 | HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0, | |
51 | complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false); | |
52 | ||
53 | static reloc_howto_type r_low16 = | |
54 | HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0, | |
55 | complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false); | |
56 | ||
57 | static reloc_howto_type r_pcrel8 = | |
58 | HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true); | |
59 | ||
60 | ||
61 | static reloc_howto_type r_pcrel16 = | |
62 | HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true); | |
63 | ||
64 | static reloc_howto_type r_high16 = | |
65 | HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0, | |
66 | complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false); | |
67 | ||
68 | ||
69 | /* Turn a howto into a reloc number */ | |
70 | ||
71 | static int | |
72 | coff_h8500_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_h8500_select_reloc(howto) | |
79 | ||
80 | ||
81 | #define BADMAG(x) H8500BADMAG(x) | |
82 | #define H8500 1 /* Customize coffcode.h */ | |
83 | ||
84 | #define __A_MAGIC_SET__ | |
85 | ||
86 | /* Code to swap in the reloc */ | |
87 | #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 | |
88 | #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 | |
89 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ | |
90 | dst->r_stuff[0] = 'S'; \ | |
91 | dst->r_stuff[1] = 'C'; | |
92 | ||
93 | /* Code to turn a r_type into a howto ptr, uses the above howto table | |
94 | */ | |
95 | ||
96 | static void | |
97 | rtype2howto(internal, dst) | |
98 | arelent * internal; | |
99 | struct internal_reloc *dst; | |
100 | { | |
101 | switch (dst->r_type) | |
102 | { | |
103 | default: | |
104 | abort (); | |
105 | break; | |
106 | case R_H8500_IMM8: | |
107 | internal->howto = &r_imm8; | |
108 | break; | |
109 | case R_H8500_IMM16: | |
110 | internal->howto = &r_imm16; | |
111 | break; | |
112 | case R_H8500_IMM24: | |
113 | internal->howto = &r_imm24; | |
114 | break; | |
115 | case R_H8500_IMM32: | |
116 | internal->howto = &r_imm32; | |
117 | break; | |
118 | case R_H8500_PCREL8: | |
119 | internal->howto = &r_pcrel8; | |
120 | break; | |
121 | case R_H8500_PCREL16: | |
122 | internal->howto = &r_pcrel16; | |
123 | break; | |
124 | case R_H8500_HIGH8: | |
125 | internal->howto = &r_high8; | |
126 | break; | |
127 | case R_H8500_HIGH16: | |
128 | internal->howto = &r_high16; | |
129 | break; | |
130 | case R_H8500_LOW16: | |
131 | internal->howto = &r_low16; | |
132 | break; | |
133 | } | |
134 | } | |
135 | ||
136 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) | |
137 | ||
138 | ||
139 | /* Perform any necessary magic to the addend in a reloc entry */ | |
140 | ||
141 | ||
142 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ | |
143 | cache_ptr->addend = ext_reloc.r_offset; | |
144 | ||
145 | ||
146 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ | |
147 | reloc_processing(relent, reloc, symbols, abfd, section) | |
148 | ||
149 | static void reloc_processing (relent, reloc, symbols, abfd, section) | |
150 | arelent * relent; | |
151 | struct internal_reloc *reloc; | |
152 | asymbol ** symbols; | |
153 | bfd * abfd; | |
154 | asection * section; | |
155 | { | |
156 | relent->address = reloc->r_vaddr; | |
157 | rtype2howto (relent, reloc); | |
158 | ||
159 | if (reloc->r_symndx > 0) | |
160 | { | |
161 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; | |
162 | } | |
163 | else | |
164 | { | |
165 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
166 | } | |
167 | ||
168 | ||
169 | relent->addend = reloc->r_offset; | |
170 | relent->address -= section->vma; | |
171 | } | |
172 | ||
173 | static void | |
174 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) | |
175 | bfd *in_abfd; | |
176 | struct bfd_link_info *link_info; | |
177 | struct bfd_link_order *link_order; | |
178 | arelent *reloc; | |
179 | bfd_byte *data; | |
180 | unsigned int *src_ptr; | |
181 | unsigned int *dst_ptr; | |
182 | { | |
183 | bfd_byte *d = data+*dst_ptr; | |
184 | asection *input_section = link_order->u.indirect.section; | |
185 | switch (reloc->howto->type) | |
186 | { | |
187 | case R_H8500_IMM8: | |
188 | bfd_put_8 (in_abfd, | |
189 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
190 | d); | |
191 | (*dst_ptr) += 1; | |
192 | (*src_ptr) += 1; | |
193 | break; | |
194 | ||
195 | case R_H8500_HIGH8: | |
196 | bfd_put_8 (in_abfd, | |
197 | (bfd_coff_reloc16_get_value (reloc, link_info, input_section) | |
198 | >> 16), | |
199 | d ); | |
200 | (*dst_ptr) += 1; | |
201 | (*src_ptr) += 1; | |
202 | break; | |
203 | ||
204 | case R_H8500_IMM16: | |
205 | bfd_put_16 (in_abfd, | |
206 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
207 | d ); | |
208 | (*dst_ptr) += 2; | |
209 | (*src_ptr) += 2; | |
210 | break; | |
211 | ||
212 | case R_H8500_LOW16: | |
213 | bfd_put_16 (in_abfd, | |
214 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
215 | d); | |
216 | ||
217 | (*dst_ptr) += 2; | |
218 | (*src_ptr) += 2; | |
219 | break; | |
220 | ||
221 | case R_H8500_HIGH16: | |
222 | bfd_put_16 (in_abfd, | |
223 | (bfd_coff_reloc16_get_value (reloc, link_info, input_section) | |
224 | >>16), | |
225 | d); | |
226 | ||
227 | (*dst_ptr) += 2; | |
228 | (*src_ptr) += 2; | |
229 | break; | |
230 | ||
231 | case R_H8500_IMM24: | |
232 | { | |
233 | int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section); | |
234 | int o = bfd_get_32(in_abfd, data+ *dst_ptr -1); | |
235 | v = (v & 0x00ffffff) | (o & 0xff00000); | |
236 | bfd_put_32 (in_abfd, v, data + *dst_ptr -1); | |
237 | (*dst_ptr) +=3; | |
238 | (*src_ptr)+=3;; | |
239 | } | |
240 | break; | |
241 | case R_H8500_IMM32: | |
242 | { | |
243 | int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section); | |
244 | bfd_put_32 (in_abfd, v, data + *dst_ptr); | |
245 | (*dst_ptr) +=4; | |
246 | (*src_ptr)+=4;; | |
247 | } | |
248 | break; | |
249 | ||
250 | ||
251 | case R_H8500_PCREL8: | |
252 | { | |
253 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
254 | input_section); | |
255 | bfd_vma dot = link_order->offset | |
256 | + *dst_ptr | |
257 | + link_order->u.indirect.section->output_section->vma; | |
258 | int gap = dst - dot - 1; /* -1 since were in the odd byte of the | |
259 | word and the pc's been incremented */ | |
260 | ||
261 | if (gap > 128 || gap < -128) | |
262 | { | |
263 | if (! ((*link_info->callbacks->reloc_overflow) | |
264 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
265 | reloc->howto->name, reloc->addend, input_section->owner, | |
266 | input_section, reloc->address))) | |
267 | abort (); | |
268 | } | |
269 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
270 | (*dst_ptr)++; | |
271 | (*src_ptr)++; | |
272 | break; | |
273 | } | |
274 | case R_H8500_PCREL16: | |
275 | { | |
276 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
277 | input_section); | |
278 | bfd_vma dot = link_order->offset | |
279 | + *dst_ptr | |
280 | + link_order->u.indirect.section->output_section->vma; | |
281 | int gap = dst - dot - 1; /* -1 since were in the odd byte of the | |
282 | word and the pc's been incremented */ | |
283 | ||
284 | if (gap > 32767 || gap < -32768) | |
285 | { | |
286 | if (! ((*link_info->callbacks->reloc_overflow) | |
287 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
288 | reloc->howto->name, reloc->addend, input_section->owner, | |
289 | input_section, reloc->address))) | |
290 | abort (); | |
291 | } | |
292 | bfd_put_16 (in_abfd, gap, data + *dst_ptr); | |
293 | (*dst_ptr)+=2; | |
294 | (*src_ptr)+=2; | |
295 | break; | |
296 | } | |
297 | ||
298 | default: | |
299 | abort (); | |
300 | } | |
301 | } | |
302 | ||
303 | #define coff_reloc16_extra_cases extra_case | |
304 | ||
305 | #include "coffcode.h" | |
306 | ||
307 | ||
308 | #undef coff_bfd_get_relocated_section_contents | |
309 | #undef coff_bfd_relax_section | |
310 | #define coff_bfd_get_relocated_section_contents \ | |
311 | bfd_coff_reloc16_get_relocated_section_contents | |
312 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section | |
313 | ||
314 | const bfd_target h8500coff_vec = | |
315 | { | |
316 | "coff-h8500", /* name */ | |
317 | bfd_target_coff_flavour, | |
318 | BFD_ENDIAN_BIG, /* data byte order is big */ | |
319 | BFD_ENDIAN_BIG, /* header byte order is big */ | |
320 | ||
321 | (HAS_RELOC | EXEC_P | /* object flags */ | |
322 | HAS_LINENO | HAS_DEBUG | | |
323 | HAS_SYMS | HAS_LOCALS | WP_TEXT), | |
324 | ||
325 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
326 | '_', /* leading symbol underscore */ | |
327 | '/', /* ar_pad_char */ | |
328 | 15, /* ar_max_namelen */ | |
329 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
330 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
331 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ | |
332 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, | |
333 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, | |
334 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ | |
335 | ||
336 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ | |
337 | bfd_generic_archive_p, _bfd_dummy_target}, | |
338 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ | |
339 | bfd_false}, | |
340 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ | |
341 | _bfd_write_archive_contents, bfd_false}, | |
342 | ||
343 | BFD_JUMP_TABLE_GENERIC (coff), | |
344 | BFD_JUMP_TABLE_COPY (coff), | |
345 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
346 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), | |
347 | BFD_JUMP_TABLE_SYMBOLS (coff), | |
348 | BFD_JUMP_TABLE_RELOCS (coff), | |
349 | BFD_JUMP_TABLE_WRITE (coff), | |
350 | BFD_JUMP_TABLE_LINK (coff), | |
351 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), | |
352 | ||
353 | COFF_SWAP_TABLE, | |
354 | }; |