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46dd0622 | 1 | /* BFD back-end for Hitachi Super-H COFF binaries. |
51fbf454 | 2 | Copyright 1993, 1994, 1995 Free Software Foundation, Inc. |
46dd0622 SC |
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | #include "bfd.h" | |
23 | #include "sysdep.h" | |
46dd0622 | 24 | #include "obstack.h" |
6812b607 ILT |
25 | #include "libbfd.h" |
26 | #include "bfdlink.h" | |
46dd0622 SC |
27 | #include "coff/sh.h" |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
46dd0622 | 30 | |
cf345e36 | 31 | static bfd_reloc_status_type sh_reloc(); |
46dd0622 | 32 | |
f6f350fe KR |
33 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (2) |
34 | ||
7a1d4567 | 35 | /*#define COFF_LONG_FILENAMES*/ |
46dd0622 | 36 | |
cf345e36 SC |
37 | static reloc_howto_type r_imm32 = |
38 | {R_SH_IMM32, 0, 2, 32, false, 0, | |
39 | complain_overflow_bitfield, sh_reloc,"r_imm32", true, 0xffffffff,0xffffffff, false}; | |
46dd0622 | 40 | |
46dd0622 | 41 | |
46dd0622 SC |
42 | #define BADMAG(x) SHBADMAG(x) |
43 | #define SH 1 /* Customize coffcode.h */ | |
44 | ||
45 | #define __A_MAGIC_SET__ | |
46 | ||
47 | /* Code to swap in the reloc */ | |
46dd0622 SC |
48 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
49 | dst->r_stuff[0] = 'S'; \ | |
50 | dst->r_stuff[1] = 'C'; | |
51 | ||
f6f350fe | 52 | /* Code to turn a r_type into a howto ptr, uses the above howto table. */ |
cf345e36 SC |
53 | static long |
54 | get_symbol_value (symbol) | |
55 | asymbol *symbol; | |
56 | { | |
57 | long relocation = 0; | |
58 | ||
59 | if (bfd_is_com_section (symbol->section)) | |
60 | { | |
61 | relocation = 0; | |
62 | } | |
63 | else | |
64 | { | |
65 | relocation = symbol->value + | |
66 | symbol->section->output_section->vma + | |
67 | symbol->section->output_offset; | |
68 | } | |
69 | ||
70 | return(relocation); | |
71 | } | |
46dd0622 | 72 | |
cf345e36 | 73 | #define RTYPE2HOWTO(x,y) ((x)->howto = &r_imm32) |
46dd0622 | 74 | |
cf345e36 SC |
75 | |
76 | /* Compute the addend of a reloc. If the reloc is to a common symbol, | |
77 | the object file contains the value of the common symbol. By the | |
78 | time this is called, the linker may be using a different symbol | |
79 | from a different object file with a different value. Therefore, we | |
80 | hack wildly to locate the original symbol from this file so that we | |
81 | can make the correct adjustment. This macro sets coffsym to the | |
82 | symbol from the original file, and uses it to set the addend value | |
83 | correctly. If this is not a common symbol, the usual addend | |
84 | calculation is done, except that an additional tweak is needed for | |
85 | PC relative relocs. | |
86 | FIXME: This macro refers to symbols and asect; these are from the | |
87 | calling function, not the macro arguments. */ | |
88 | ||
89 | #define CALC_ADDEND(abfd, ptr, reloc, cache_ptr) \ | |
90 | { \ | |
91 | coff_symbol_type *coffsym = (coff_symbol_type *) NULL; \ | |
92 | if (ptr && bfd_asymbol_bfd (ptr) != abfd) \ | |
93 | coffsym = (obj_symbols (abfd) \ | |
94 | + (cache_ptr->sym_ptr_ptr - symbols)); \ | |
95 | else if (ptr) \ | |
96 | coffsym = coff_symbol_from (abfd, ptr); \ | |
97 | if (coffsym != (coff_symbol_type *) NULL \ | |
98 | && coffsym->native->u.syment.n_scnum == 0) \ | |
99 | cache_ptr->addend = - coffsym->native->u.syment.n_value; \ | |
100 | else if (ptr && bfd_asymbol_bfd (ptr) == abfd \ | |
101 | && ptr->section != (asection *) NULL) \ | |
102 | cache_ptr->addend = - (ptr->section->vma + ptr->value); \ | |
103 | else \ | |
104 | cache_ptr->addend = 0; \ | |
105 | } | |
106 | ||
cf345e36 SC |
107 | /* this function is in charge of performing all the 29k relocations */ |
108 | ||
109 | static bfd_reloc_status_type | |
110 | sh_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, | |
111 | error_message) | |
112 | bfd *abfd; | |
113 | arelent *reloc_entry; | |
114 | asymbol *symbol_in; | |
115 | PTR data; | |
116 | asection *input_section; | |
117 | bfd *output_bfd; | |
118 | char **error_message; | |
119 | { | |
120 | /* the consth relocation comes in two parts, we have to remember | |
121 | the state between calls, in these variables */ | |
122 | unsigned long insn; | |
123 | unsigned long sym_value; | |
124 | unsigned short r_type; | |
125 | ||
126 | unsigned long addr = reloc_entry->address ; /*+ input_section->vma*/ | |
127 | bfd_byte *hit_data =addr + (bfd_byte *)(data); | |
128 | ||
129 | r_type = reloc_entry->howto->type; | |
130 | ||
131 | if (output_bfd) { | |
132 | /* Partial linking - do nothing */ | |
133 | reloc_entry->address += input_section->output_offset; | |
134 | return bfd_reloc_ok; | |
135 | } | |
136 | ||
137 | if (symbol_in != NULL | |
138 | && bfd_is_und_section (symbol_in->section)) | |
139 | { | |
140 | /* Keep the state machine happy in case we're called again */ | |
141 | return (bfd_reloc_undefined); | |
142 | } | |
143 | ||
144 | ||
145 | sym_value = get_symbol_value(symbol_in); | |
146 | ||
147 | switch (r_type) | |
148 | { | |
149 | case R_SH_IMM32: | |
cf345e36 | 150 | insn = sym_value + reloc_entry->addend; |
6e3acf74 | 151 | insn += bfd_get_32 (abfd, hit_data); |
cf345e36 SC |
152 | bfd_put_32(abfd, insn, hit_data); |
153 | break; | |
154 | default: | |
155 | *error_message = "Unrecognized reloc"; | |
156 | return (bfd_reloc_dangerous); | |
157 | } | |
158 | ||
159 | ||
160 | return(bfd_reloc_ok); | |
161 | } | |
162 | ||
163 | /* The reloc processing routine for the optimized COFF linker. */ | |
164 | ||
165 | static boolean | |
166 | coff_sh_relocate_section (output_bfd, info, input_bfd, input_section, | |
167 | contents, relocs, syms, sections) | |
168 | bfd *output_bfd; | |
169 | struct bfd_link_info *info; | |
170 | bfd *input_bfd; | |
171 | asection *input_section; | |
172 | bfd_byte *contents; | |
173 | struct internal_reloc *relocs; | |
174 | struct internal_syment *syms; | |
175 | asection **sections; | |
176 | { | |
177 | struct internal_reloc *rel; | |
178 | struct internal_reloc *relend; | |
179 | ||
180 | /* If we are performing a relocateable link, we don't need to do a | |
181 | thing. The caller will take care of adjusting the reloc | |
182 | addresses and symbol indices. */ | |
183 | if (info->relocateable) | |
184 | return true; | |
185 | ||
186 | ||
187 | rel = relocs; | |
188 | relend = rel + input_section->reloc_count; | |
189 | for (; rel < relend; rel++) | |
190 | { | |
191 | long symndx; | |
192 | bfd_byte *loc; | |
193 | struct coff_link_hash_entry *h; | |
194 | struct internal_syment *sym; | |
195 | asection *sec; | |
196 | bfd_vma val; | |
cf345e36 SC |
197 | |
198 | symndx = rel->r_symndx; | |
199 | loc = contents + rel->r_vaddr - input_section->vma; | |
200 | ||
201 | if (symndx == -1) | |
202 | h = NULL; | |
203 | else | |
204 | h = obj_coff_sym_hashes (input_bfd)[symndx]; | |
205 | ||
206 | sym = NULL; | |
207 | sec = NULL; | |
208 | val = 0; | |
209 | ||
210 | ||
211 | if (h == NULL) | |
212 | { | |
213 | if (symndx == -1) | |
214 | sec = bfd_abs_section_ptr; | |
215 | else | |
216 | { | |
217 | sym = syms + symndx; | |
218 | sec = sections[symndx]; | |
219 | val = (sec->output_section->vma | |
220 | + sec->output_offset | |
221 | + sym->n_value | |
cf345e36 SC |
222 | - sec->vma); |
223 | } | |
224 | } | |
225 | else | |
226 | { | |
227 | if (h->root.type == bfd_link_hash_defined) | |
228 | { | |
229 | sec = h->root.u.def.section; | |
230 | val = (h->root.u.def.value | |
231 | + sec->output_section->vma | |
232 | + sec->output_offset); | |
233 | } | |
234 | else | |
235 | { | |
236 | if (! ((*info->callbacks->undefined_symbol) | |
237 | (info, h->root.root.string, input_bfd, input_section, | |
238 | rel->r_vaddr - input_section->vma))) | |
239 | return false; | |
240 | } | |
241 | } | |
242 | ||
243 | switch (rel->r_type) | |
244 | { | |
245 | default: | |
246 | bfd_set_error (bfd_error_bad_value); | |
247 | return false; | |
248 | ||
249 | case R_SH_IMM32: | |
250 | { | |
251 | long x = bfd_get_32 (input_bfd, loc); | |
252 | x += val; | |
253 | bfd_put_32 (input_bfd, x, loc); | |
254 | ||
255 | } | |
256 | ||
257 | break; | |
258 | } | |
259 | } | |
260 | ||
261 | return true; | |
262 | } | |
46dd0622 | 263 | |
cf345e36 | 264 | #define coff_relocate_section coff_sh_relocate_section |
46dd0622 SC |
265 | #include "coffcode.h" |
266 | ||
2f3508ad | 267 | const bfd_target shcoff_vec = |
46dd0622 SC |
268 | { |
269 | "coff-sh", /* name */ | |
270 | bfd_target_coff_flavour, | |
271 | true, /* data byte order is big */ | |
272 | true, /* header byte order is big */ | |
273 | ||
274 | (HAS_RELOC | EXEC_P | /* object flags */ | |
275 | HAS_LINENO | HAS_DEBUG | | |
6812b607 | 276 | HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ), |
46dd0622 SC |
277 | |
278 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
279 | '_', /* leading symbol underscore */ | |
280 | '/', /* ar_pad_char */ | |
281 | 15, /* ar_max_namelen */ | |
282 | 2, /* minimum section alignment */ | |
cf345e36 | 283 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
6812b607 ILT |
284 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
285 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */ | |
cf345e36 | 286 | bfd_getb64, bfd_getb_signed_64, bfd_putb64, |
6812b607 ILT |
287 | bfd_getb32, bfd_getb_signed_32, bfd_putb32, |
288 | bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */ | |
46dd0622 SC |
289 | |
290 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ | |
291 | bfd_generic_archive_p, _bfd_dummy_target}, | |
292 | {bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */ | |
293 | bfd_false}, | |
294 | {bfd_false, coff_write_object_contents, /* bfd_write_contents */ | |
295 | _bfd_write_archive_contents, bfd_false}, | |
296 | ||
6812b607 ILT |
297 | BFD_JUMP_TABLE_GENERIC (coff), |
298 | BFD_JUMP_TABLE_COPY (coff), | |
299 | BFD_JUMP_TABLE_CORE (_bfd_nocore), | |
300 | BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff), | |
301 | BFD_JUMP_TABLE_SYMBOLS (coff), | |
302 | BFD_JUMP_TABLE_RELOCS (coff), | |
303 | BFD_JUMP_TABLE_WRITE (coff), | |
304 | BFD_JUMP_TABLE_LINK (coff), | |
2f3508ad | 305 | BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic), |
6812b607 | 306 | |
46dd0622 SC |
307 | COFF_SWAP_TABLE, |
308 | }; | |
cf345e36 | 309 | |
7a1d4567 SC |
310 | const bfd_target shlcoff_vec = |
311 | { | |
312 | "coff-shl", /* name */ | |
313 | bfd_target_coff_flavour, | |
314 | false, /* data byte order is little */ | |
315 | false, /* header byte order is little endian too*/ | |
316 | ||
317 | (HAS_RELOC | EXEC_P | /* object flags */ | |
318 | HAS_LINENO | HAS_DEBUG | | |
319 | HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ), | |
320 | ||
321 | (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */ | |
322 | '_', /* leading symbol underscore */ | |
323 | '/', /* ar_pad_char */ | |
324 | 15, /* ar_max_namelen */ | |
325 | 2, /* minimum section alignment */ | |
326 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
327 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
328 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* data */ | |
329 | bfd_getl64, bfd_getl_signed_64, bfd_putl64, | |
330 | bfd_getl32, bfd_getl_signed_32, bfd_putl32, | |
331 | bfd_getl16, bfd_getl_signed_16, bfd_putl16, /* hdrs */ | |
332 | ||
333 | /* Note that we use a special archive recognizer. | |
334 | This is so that we only use one archive format for both | |
335 | object file types */ | |
336 | {_bfd_dummy_target, coff_object_p, /* bfd_check_format */ | |
6e3acf74 | 337 | _bfd_dummy_target, _bfd_dummy_target}, |
7a1d4567 SC |
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 | }; | |
355 |