Commit | Line | Data |
---|---|---|
60bcf0fa | 1 | /* Motorola 68HC11-specific support for 32-bit ELF |
196486be | 2 | Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc. |
dae78fb0 | 3 | Contributed by Stephane Carrez (stcarrez@nerim.fr) |
60bcf0fa NC |
4 | (Heavily copied from the D10V port by Martin Hunt (hunt@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" | |
1fd03b5a | 24 | #include "bfdlink.h" |
60bcf0fa NC |
25 | #include "libbfd.h" |
26 | #include "elf-bfd.h" | |
27 | #include "elf/m68hc11.h" | |
28 | ||
29 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
56780f18 | 30 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
60bcf0fa | 31 | static void m68hc11_info_to_howto_rel |
947216bf | 32 | PARAMS ((bfd *, arelent *, Elf_Internal_Rela *)); |
60bcf0fa | 33 | |
dae78fb0 | 34 | static bfd_reloc_status_type m68hc11_elf_ignore_reloc |
56780f18 | 35 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
dae78fb0 | 36 | |
9b701e44 SC |
37 | /* GC mark and sweep. */ |
38 | static asection *elf32_m68hc11_gc_mark_hook | |
56780f18 AM |
39 | PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
40 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); | |
b34976b6 | 41 | static bfd_boolean elf32_m68hc11_gc_sweep_hook |
56780f18 AM |
42 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
43 | const Elf_Internal_Rela *)); | |
b34976b6 | 44 | static bfd_boolean elf32_m68hc11_check_relocs |
56780f18 AM |
45 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
46 | const Elf_Internal_Rela *)); | |
b34976b6 | 47 | static bfd_boolean elf32_m68hc11_relocate_section |
56780f18 AM |
48 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
49 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); | |
b34976b6 AM |
50 | static bfd_boolean m68hc11_elf_relax_section |
51 | PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *)); | |
1fd03b5a | 52 | static void m68hc11_elf_relax_delete_bytes |
56780f18 | 53 | PARAMS ((bfd *, asection *, bfd_vma, int)); |
1fd03b5a | 54 | static void m68hc11_relax_group |
56780f18 AM |
55 | PARAMS ((bfd *, asection *, bfd_byte *, unsigned, |
56 | unsigned long, unsigned long)); | |
57 | static int compare_reloc PARAMS ((const void *, const void *)); | |
1fd03b5a | 58 | |
9b701e44 | 59 | |
b34976b6 AM |
60 | bfd_boolean _bfd_m68hc11_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *)); |
61 | bfd_boolean _bfd_m68hc11_elf_set_private_flags PARAMS ((bfd *, flagword)); | |
62 | bfd_boolean _bfd_m68hc11_elf_print_private_bfd_data PARAMS ((bfd *, PTR)); | |
96405e3c | 63 | |
60bcf0fa | 64 | /* Use REL instead of RELA to save space */ |
acf8aed4 | 65 | #define USE_REL 1 |
60bcf0fa NC |
66 | |
67 | /* The Motorola 68HC11 microcontroler only addresses 64Kb. | |
68 | We must handle 8 and 16-bit relocations. The 32-bit relocation | |
69 | is defined but not used except by gas when -gstabs is used (which | |
70 | is wrong). | |
71 | The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */ | |
72 | static reloc_howto_type elf_m68hc11_howto_table[] = { | |
73 | /* This reloc does nothing. */ | |
74 | HOWTO (R_M68HC11_NONE, /* type */ | |
75 | 0, /* rightshift */ | |
76 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
77 | 32, /* bitsize */ | |
b34976b6 | 78 | FALSE, /* pc_relative */ |
60bcf0fa | 79 | 0, /* bitpos */ |
7a897be4 | 80 | complain_overflow_dont,/* complain_on_overflow */ |
60bcf0fa NC |
81 | bfd_elf_generic_reloc, /* special_function */ |
82 | "R_M68HC11_NONE", /* name */ | |
b34976b6 | 83 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
84 | 0, /* src_mask */ |
85 | 0, /* dst_mask */ | |
b34976b6 | 86 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
87 | |
88 | /* A 8 bit absolute relocation */ | |
89 | HOWTO (R_M68HC11_8, /* type */ | |
90 | 0, /* rightshift */ | |
91 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
92 | 8, /* bitsize */ | |
b34976b6 | 93 | FALSE, /* pc_relative */ |
60bcf0fa NC |
94 | 0, /* bitpos */ |
95 | complain_overflow_bitfield, /* complain_on_overflow */ | |
96 | bfd_elf_generic_reloc, /* special_function */ | |
97 | "R_M68HC11_8", /* name */ | |
b34976b6 | 98 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
99 | 0x00ff, /* src_mask */ |
100 | 0x00ff, /* dst_mask */ | |
b34976b6 | 101 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
102 | |
103 | /* A 8 bit absolute relocation (upper address) */ | |
104 | HOWTO (R_M68HC11_HI8, /* type */ | |
105 | 8, /* rightshift */ | |
106 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
107 | 8, /* bitsize */ | |
b34976b6 | 108 | FALSE, /* pc_relative */ |
60bcf0fa NC |
109 | 0, /* bitpos */ |
110 | complain_overflow_bitfield, /* complain_on_overflow */ | |
111 | bfd_elf_generic_reloc, /* special_function */ | |
112 | "R_M68HC11_HI8", /* name */ | |
b34976b6 | 113 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
114 | 0x00ff, /* src_mask */ |
115 | 0x00ff, /* dst_mask */ | |
b34976b6 | 116 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
117 | |
118 | /* A 8 bit absolute relocation (upper address) */ | |
119 | HOWTO (R_M68HC11_LO8, /* type */ | |
120 | 0, /* rightshift */ | |
121 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
122 | 8, /* bitsize */ | |
b34976b6 | 123 | FALSE, /* pc_relative */ |
60bcf0fa NC |
124 | 0, /* bitpos */ |
125 | complain_overflow_dont, /* complain_on_overflow */ | |
126 | bfd_elf_generic_reloc, /* special_function */ | |
127 | "R_M68HC11_LO8", /* name */ | |
b34976b6 | 128 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
129 | 0x00ff, /* src_mask */ |
130 | 0x00ff, /* dst_mask */ | |
b34976b6 | 131 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
132 | |
133 | /* A 8 bit PC-rel relocation */ | |
134 | HOWTO (R_M68HC11_PCREL_8, /* type */ | |
135 | 0, /* rightshift */ | |
136 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
137 | 8, /* bitsize */ | |
b34976b6 | 138 | TRUE, /* pc_relative */ |
60bcf0fa NC |
139 | 0, /* bitpos */ |
140 | complain_overflow_bitfield, /* complain_on_overflow */ | |
141 | bfd_elf_generic_reloc, /* special_function */ | |
142 | "R_M68HC11_PCREL_8", /* name */ | |
b34976b6 | 143 | FALSE, /* partial_inplace */ |
dae78fb0 | 144 | 0x00ff, /* src_mask */ |
60bcf0fa | 145 | 0x00ff, /* dst_mask */ |
196486be | 146 | TRUE), /* pcrel_offset */ |
60bcf0fa NC |
147 | |
148 | /* A 16 bit absolute relocation */ | |
149 | HOWTO (R_M68HC11_16, /* type */ | |
150 | 0, /* rightshift */ | |
151 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
152 | 16, /* bitsize */ | |
b34976b6 | 153 | FALSE, /* pc_relative */ |
60bcf0fa NC |
154 | 0, /* bitpos */ |
155 | complain_overflow_dont /*bitfield */ , /* complain_on_overflow */ | |
156 | bfd_elf_generic_reloc, /* special_function */ | |
157 | "R_M68HC11_16", /* name */ | |
b34976b6 | 158 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
159 | 0xffff, /* src_mask */ |
160 | 0xffff, /* dst_mask */ | |
b34976b6 | 161 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
162 | |
163 | /* A 32 bit absolute relocation. This one is never used for the | |
164 | code relocation. It's used by gas for -gstabs generation. */ | |
165 | HOWTO (R_M68HC11_32, /* type */ | |
166 | 0, /* rightshift */ | |
167 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
168 | 32, /* bitsize */ | |
b34976b6 | 169 | FALSE, /* pc_relative */ |
60bcf0fa NC |
170 | 0, /* bitpos */ |
171 | complain_overflow_bitfield, /* complain_on_overflow */ | |
172 | bfd_elf_generic_reloc, /* special_function */ | |
173 | "R_M68HC11_32", /* name */ | |
b34976b6 | 174 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
175 | 0xffffffff, /* src_mask */ |
176 | 0xffffffff, /* dst_mask */ | |
b34976b6 | 177 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
178 | |
179 | /* A 3 bit absolute relocation */ | |
180 | HOWTO (R_M68HC11_3B, /* type */ | |
181 | 0, /* rightshift */ | |
182 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
183 | 3, /* bitsize */ | |
b34976b6 | 184 | FALSE, /* pc_relative */ |
60bcf0fa NC |
185 | 0, /* bitpos */ |
186 | complain_overflow_bitfield, /* complain_on_overflow */ | |
187 | bfd_elf_generic_reloc, /* special_function */ | |
188 | "R_M68HC11_4B", /* name */ | |
b34976b6 | 189 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
190 | 0x003, /* src_mask */ |
191 | 0x003, /* dst_mask */ | |
b34976b6 | 192 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
193 | |
194 | /* A 16 bit PC-rel relocation */ | |
195 | HOWTO (R_M68HC11_PCREL_16, /* type */ | |
196 | 0, /* rightshift */ | |
197 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
198 | 16, /* bitsize */ | |
b34976b6 | 199 | TRUE, /* pc_relative */ |
60bcf0fa NC |
200 | 0, /* bitpos */ |
201 | complain_overflow_dont, /* complain_on_overflow */ | |
202 | bfd_elf_generic_reloc, /* special_function */ | |
203 | "R_M68HC11_PCREL_16", /* name */ | |
b34976b6 | 204 | FALSE, /* partial_inplace */ |
dae78fb0 | 205 | 0xffff, /* src_mask */ |
60bcf0fa | 206 | 0xffff, /* dst_mask */ |
196486be | 207 | TRUE), /* pcrel_offset */ |
60bcf0fa NC |
208 | |
209 | /* GNU extension to record C++ vtable hierarchy */ | |
210 | HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */ | |
211 | 0, /* rightshift */ | |
212 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
213 | 0, /* bitsize */ | |
b34976b6 | 214 | FALSE, /* pc_relative */ |
60bcf0fa NC |
215 | 0, /* bitpos */ |
216 | complain_overflow_dont, /* complain_on_overflow */ | |
217 | NULL, /* special_function */ | |
218 | "R_M68HC11_GNU_VTINHERIT", /* name */ | |
b34976b6 | 219 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
220 | 0, /* src_mask */ |
221 | 0, /* dst_mask */ | |
b34976b6 | 222 | FALSE), /* pcrel_offset */ |
60bcf0fa NC |
223 | |
224 | /* GNU extension to record C++ vtable member usage */ | |
225 | HOWTO (R_M68HC11_GNU_VTENTRY, /* type */ | |
226 | 0, /* rightshift */ | |
227 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
228 | 0, /* bitsize */ | |
b34976b6 | 229 | FALSE, /* pc_relative */ |
60bcf0fa NC |
230 | 0, /* bitpos */ |
231 | complain_overflow_dont, /* complain_on_overflow */ | |
232 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
233 | "R_M68HC11_GNU_VTENTRY", /* name */ | |
b34976b6 | 234 | FALSE, /* partial_inplace */ |
60bcf0fa NC |
235 | 0, /* src_mask */ |
236 | 0, /* dst_mask */ | |
b34976b6 | 237 | FALSE), /* pcrel_offset */ |
dae78fb0 | 238 | |
7a897be4 SC |
239 | /* A 24 bit relocation */ |
240 | HOWTO (R_M68HC11_24, /* type */ | |
241 | 0, /* rightshift */ | |
242 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
243 | 24, /* bitsize */ | |
b34976b6 | 244 | FALSE, /* pc_relative */ |
7a897be4 SC |
245 | 0, /* bitpos */ |
246 | complain_overflow_bitfield, /* complain_on_overflow */ | |
247 | bfd_elf_generic_reloc, /* special_function */ | |
248 | "R_M68HC11_24", /* name */ | |
b34976b6 | 249 | FALSE, /* partial_inplace */ |
196486be SC |
250 | 0xffffff, /* src_mask */ |
251 | 0xffffff, /* dst_mask */ | |
b34976b6 AM |
252 | FALSE), /* pcrel_offset */ |
253 | ||
7a897be4 SC |
254 | /* A 16-bit low relocation */ |
255 | HOWTO (R_M68HC11_LO16, /* type */ | |
256 | 0, /* rightshift */ | |
257 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
258 | 16, /* bitsize */ | |
b34976b6 | 259 | FALSE, /* pc_relative */ |
7a897be4 SC |
260 | 0, /* bitpos */ |
261 | complain_overflow_bitfield, /* complain_on_overflow */ | |
262 | bfd_elf_generic_reloc, /* special_function */ | |
263 | "R_M68HC11_LO16", /* name */ | |
b34976b6 | 264 | FALSE, /* partial_inplace */ |
7a897be4 SC |
265 | 0xffff, /* src_mask */ |
266 | 0xffff, /* dst_mask */ | |
b34976b6 | 267 | FALSE), /* pcrel_offset */ |
7a897be4 SC |
268 | |
269 | /* A page relocation */ | |
270 | HOWTO (R_M68HC11_PAGE, /* type */ | |
271 | 0, /* rightshift */ | |
272 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
273 | 8, /* bitsize */ | |
b34976b6 | 274 | FALSE, /* pc_relative */ |
7a897be4 SC |
275 | 0, /* bitpos */ |
276 | complain_overflow_bitfield, /* complain_on_overflow */ | |
277 | bfd_elf_generic_reloc, /* special_function */ | |
278 | "R_M68HC11_PAGE", /* name */ | |
b34976b6 | 279 | FALSE, /* partial_inplace */ |
7a897be4 SC |
280 | 0x00ff, /* src_mask */ |
281 | 0x00ff, /* dst_mask */ | |
b34976b6 | 282 | FALSE), /* pcrel_offset */ |
7a897be4 | 283 | |
dae78fb0 SC |
284 | EMPTY_HOWTO (14), |
285 | EMPTY_HOWTO (15), | |
286 | EMPTY_HOWTO (16), | |
287 | EMPTY_HOWTO (17), | |
288 | EMPTY_HOWTO (18), | |
289 | EMPTY_HOWTO (19), | |
b34976b6 | 290 | |
dae78fb0 SC |
291 | /* Mark beginning of a jump instruction (any form). */ |
292 | HOWTO (R_M68HC11_RL_JUMP, /* type */ | |
293 | 0, /* rightshift */ | |
294 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
295 | 0, /* bitsize */ | |
b34976b6 | 296 | FALSE, /* pc_relative */ |
dae78fb0 SC |
297 | 0, /* bitpos */ |
298 | complain_overflow_dont, /* complain_on_overflow */ | |
299 | m68hc11_elf_ignore_reloc, /* special_function */ | |
300 | "R_M68HC11_RL_JUMP", /* name */ | |
b34976b6 | 301 | TRUE, /* partial_inplace */ |
dae78fb0 SC |
302 | 0, /* src_mask */ |
303 | 0, /* dst_mask */ | |
b34976b6 | 304 | TRUE), /* pcrel_offset */ |
dae78fb0 SC |
305 | |
306 | /* Mark beginning of Gcc relaxation group instruction. */ | |
307 | HOWTO (R_M68HC11_RL_GROUP, /* type */ | |
308 | 0, /* rightshift */ | |
309 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
310 | 0, /* bitsize */ | |
b34976b6 | 311 | FALSE, /* pc_relative */ |
dae78fb0 SC |
312 | 0, /* bitpos */ |
313 | complain_overflow_dont, /* complain_on_overflow */ | |
314 | m68hc11_elf_ignore_reloc, /* special_function */ | |
315 | "R_M68HC11_RL_GROUP", /* name */ | |
b34976b6 | 316 | TRUE, /* partial_inplace */ |
dae78fb0 SC |
317 | 0, /* src_mask */ |
318 | 0, /* dst_mask */ | |
b34976b6 | 319 | TRUE), /* pcrel_offset */ |
60bcf0fa NC |
320 | }; |
321 | ||
322 | /* Map BFD reloc types to M68HC11 ELF reloc types. */ | |
323 | ||
324 | struct m68hc11_reloc_map | |
325 | { | |
326 | bfd_reloc_code_real_type bfd_reloc_val; | |
327 | unsigned char elf_reloc_val; | |
328 | }; | |
329 | ||
330 | static const struct m68hc11_reloc_map m68hc11_reloc_map[] = { | |
331 | {BFD_RELOC_NONE, R_M68HC11_NONE,}, | |
332 | {BFD_RELOC_8, R_M68HC11_8}, | |
333 | {BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8}, | |
334 | {BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8}, | |
335 | {BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8}, | |
336 | {BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16}, | |
337 | {BFD_RELOC_16, R_M68HC11_16}, | |
338 | {BFD_RELOC_32, R_M68HC11_32}, | |
339 | {BFD_RELOC_M68HC11_3B, R_M68HC11_3B}, | |
340 | ||
60bcf0fa NC |
341 | {BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT}, |
342 | {BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY}, | |
dae78fb0 | 343 | |
7a897be4 SC |
344 | {BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16}, |
345 | {BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE}, | |
346 | {BFD_RELOC_M68HC11_24, R_M68HC11_24}, | |
347 | ||
dae78fb0 SC |
348 | {BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP}, |
349 | {BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP}, | |
60bcf0fa NC |
350 | }; |
351 | ||
352 | static reloc_howto_type * | |
353 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) | |
354 | bfd *abfd ATTRIBUTE_UNUSED; | |
355 | bfd_reloc_code_real_type code; | |
356 | { | |
357 | unsigned int i; | |
358 | ||
359 | for (i = 0; | |
360 | i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map); | |
361 | i++) | |
362 | { | |
363 | if (m68hc11_reloc_map[i].bfd_reloc_val == code) | |
364 | return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val]; | |
365 | } | |
366 | ||
367 | return NULL; | |
368 | } | |
369 | ||
dae78fb0 SC |
370 | /* This function is used for relocs which are only used for relaxing, |
371 | which the linker should otherwise ignore. */ | |
372 | ||
373 | static bfd_reloc_status_type | |
374 | m68hc11_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section, | |
375 | output_bfd, error_message) | |
376 | bfd *abfd ATTRIBUTE_UNUSED; | |
377 | arelent *reloc_entry; | |
378 | asymbol *symbol ATTRIBUTE_UNUSED; | |
379 | PTR data ATTRIBUTE_UNUSED; | |
380 | asection *input_section; | |
381 | bfd *output_bfd; | |
382 | char **error_message ATTRIBUTE_UNUSED; | |
383 | { | |
384 | if (output_bfd != NULL) | |
385 | reloc_entry->address += input_section->output_offset; | |
386 | return bfd_reloc_ok; | |
387 | } | |
388 | ||
60bcf0fa NC |
389 | /* Set the howto pointer for an M68HC11 ELF reloc. */ |
390 | ||
391 | static void | |
392 | m68hc11_info_to_howto_rel (abfd, cache_ptr, dst) | |
393 | bfd *abfd ATTRIBUTE_UNUSED; | |
394 | arelent *cache_ptr; | |
947216bf | 395 | Elf_Internal_Rela *dst; |
60bcf0fa NC |
396 | { |
397 | unsigned int r_type; | |
398 | ||
399 | r_type = ELF32_R_TYPE (dst->r_info); | |
400 | BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max); | |
401 | cache_ptr->howto = &elf_m68hc11_howto_table[r_type]; | |
402 | } | |
403 | ||
9b701e44 | 404 | static asection * |
56780f18 AM |
405 | elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym) |
406 | asection *sec; | |
9b701e44 SC |
407 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
408 | Elf_Internal_Rela *rel; | |
409 | struct elf_link_hash_entry *h; | |
410 | Elf_Internal_Sym *sym; | |
411 | { | |
412 | if (h != NULL) | |
413 | { | |
414 | switch (ELF32_R_TYPE (rel->r_info)) | |
415 | { | |
416 | default: | |
417 | switch (h->root.type) | |
418 | { | |
419 | case bfd_link_hash_defined: | |
420 | case bfd_link_hash_defweak: | |
421 | return h->root.u.def.section; | |
422 | ||
423 | case bfd_link_hash_common: | |
424 | return h->root.u.c.p->section; | |
425 | ||
426 | default: | |
427 | break; | |
428 | } | |
429 | } | |
430 | } | |
431 | else | |
56780f18 AM |
432 | return bfd_section_from_elf_index (sec->owner, sym->st_shndx); |
433 | ||
9b701e44 SC |
434 | return NULL; |
435 | } | |
436 | ||
b34976b6 | 437 | static bfd_boolean |
9b701e44 SC |
438 | elf32_m68hc11_gc_sweep_hook (abfd, info, sec, relocs) |
439 | bfd *abfd ATTRIBUTE_UNUSED; | |
440 | struct bfd_link_info *info ATTRIBUTE_UNUSED; | |
441 | asection *sec ATTRIBUTE_UNUSED; | |
442 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; | |
443 | { | |
444 | /* We don't use got and plt entries for 68hc11/68hc12. */ | |
b34976b6 | 445 | return TRUE; |
9b701e44 SC |
446 | } |
447 | ||
196486be SC |
448 | \f |
449 | /* 68HC11 Linker Relaxation. */ | |
450 | ||
b34976b6 | 451 | struct m68hc11_direct_relax |
1fd03b5a SC |
452 | { |
453 | const char *name; | |
454 | unsigned char code; | |
455 | unsigned char direct_code; | |
456 | } m68hc11_direct_relax_table[] = { | |
457 | { "adca", 0xB9, 0x99 }, | |
458 | { "adcb", 0xF9, 0xD9 }, | |
459 | { "adda", 0xBB, 0x9B }, | |
460 | { "addb", 0xFB, 0xDB }, | |
461 | { "addd", 0xF3, 0xD3 }, | |
462 | { "anda", 0xB4, 0x94 }, | |
463 | { "andb", 0xF4, 0xD4 }, | |
464 | { "cmpa", 0xB1, 0x91 }, | |
465 | { "cmpb", 0xF1, 0xD1 }, | |
466 | { "cpd", 0xB3, 0x93 }, | |
467 | { "cpxy", 0xBC, 0x9C }, | |
468 | /* { "cpy", 0xBC, 0x9C }, */ | |
469 | { "eora", 0xB8, 0x98 }, | |
470 | { "eorb", 0xF8, 0xD8 }, | |
471 | { "jsr", 0xBD, 0x9D }, | |
472 | { "ldaa", 0xB6, 0x96 }, | |
473 | { "ldab", 0xF6, 0xD6 }, | |
474 | { "ldd", 0xFC, 0xDC }, | |
475 | { "lds", 0xBE, 0x9E }, | |
476 | { "ldxy", 0xFE, 0xDE }, | |
477 | /* { "ldy", 0xFE, 0xDE },*/ | |
478 | { "oraa", 0xBA, 0x9A }, | |
479 | { "orab", 0xFA, 0xDA }, | |
480 | { "sbca", 0xB2, 0x92 }, | |
481 | { "sbcb", 0xF2, 0xD2 }, | |
482 | { "staa", 0xB7, 0x97 }, | |
483 | { "stab", 0xF7, 0xD7 }, | |
484 | { "std", 0xFD, 0xDD }, | |
485 | { "sts", 0xBF, 0x9F }, | |
486 | { "stxy", 0xFF, 0xDF }, | |
487 | /* { "sty", 0xFF, 0xDF },*/ | |
488 | { "suba", 0xB0, 0x90 }, | |
489 | { "subb", 0xF0, 0xD0 }, | |
490 | { "subd", 0xB3, 0x93 }, | |
491 | { 0, 0, 0 } | |
492 | }; | |
493 | ||
494 | static struct m68hc11_direct_relax * | |
495 | find_relaxable_insn (unsigned char code) | |
496 | { | |
497 | int i; | |
498 | ||
499 | for (i = 0; m68hc11_direct_relax_table[i].name; i++) | |
500 | if (m68hc11_direct_relax_table[i].code == code) | |
501 | return &m68hc11_direct_relax_table[i]; | |
502 | ||
503 | return 0; | |
504 | } | |
505 | ||
506 | static int | |
507 | compare_reloc (e1, e2) | |
508 | const void *e1; | |
509 | const void *e2; | |
510 | { | |
511 | const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1; | |
512 | const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2; | |
513 | ||
514 | if (i1->r_offset == i2->r_offset) | |
515 | return 0; | |
516 | else | |
517 | return i1->r_offset < i2->r_offset ? -1 : 1; | |
518 | } | |
519 | ||
520 | #define M6811_OP_LDX_IMMEDIATE (0xCE) | |
521 | ||
522 | static void | |
523 | m68hc11_relax_group (abfd, sec, contents, value, offset, end_group) | |
524 | bfd *abfd; | |
525 | asection *sec; | |
526 | bfd_byte *contents; | |
527 | unsigned value; | |
528 | unsigned long offset; | |
529 | unsigned long end_group; | |
530 | { | |
531 | unsigned char code; | |
532 | unsigned long start_offset; | |
533 | unsigned long ldx_offset = offset; | |
534 | unsigned long ldx_size; | |
535 | int can_delete_ldx; | |
536 | int relax_ldy = 0; | |
537 | ||
538 | /* First instruction of the relax group must be a | |
539 | LDX #value or LDY #value. If this is not the case, | |
540 | ignore the relax group. */ | |
541 | code = bfd_get_8 (abfd, contents + offset); | |
542 | if (code == 0x18) | |
543 | { | |
544 | relax_ldy++; | |
545 | offset++; | |
546 | code = bfd_get_8 (abfd, contents + offset); | |
547 | } | |
548 | ldx_size = offset - ldx_offset + 3; | |
549 | offset += 3; | |
550 | if (code != M6811_OP_LDX_IMMEDIATE || offset >= end_group) | |
551 | return; | |
552 | ||
553 | ||
554 | /* We can remove the LDX/LDY only when all bset/brclr instructions | |
555 | of the relax group have been converted to use direct addressing | |
556 | mode. */ | |
557 | can_delete_ldx = 1; | |
558 | while (offset < end_group) | |
559 | { | |
560 | unsigned isize; | |
561 | unsigned new_value; | |
562 | int bset_use_y; | |
563 | ||
564 | bset_use_y = 0; | |
565 | start_offset = offset; | |
566 | code = bfd_get_8 (abfd, contents + offset); | |
567 | if (code == 0x18) | |
568 | { | |
569 | bset_use_y++; | |
570 | offset++; | |
571 | code = bfd_get_8 (abfd, contents + offset); | |
572 | } | |
573 | ||
574 | /* Check the instruction and translate to use direct addressing mode. */ | |
575 | switch (code) | |
576 | { | |
577 | /* bset */ | |
578 | case 0x1C: | |
579 | code = 0x14; | |
580 | isize = 3; | |
581 | break; | |
582 | ||
583 | /* brclr */ | |
584 | case 0x1F: | |
585 | code = 0x13; | |
586 | isize = 4; | |
587 | break; | |
588 | ||
589 | /* brset */ | |
590 | case 0x1E: | |
591 | code = 0x12; | |
592 | isize = 4; | |
593 | break; | |
594 | ||
595 | /* bclr */ | |
596 | case 0x1D: | |
597 | code = 0x15; | |
598 | isize = 3; | |
599 | break; | |
600 | ||
601 | /* This instruction is not recognized and we are not | |
602 | at end of the relax group. Ignore and don't remove | |
603 | the first LDX (we don't know what it is used for...). */ | |
604 | default: | |
605 | return; | |
606 | } | |
607 | new_value = (unsigned) bfd_get_8 (abfd, contents + offset + 1); | |
608 | new_value += value; | |
609 | if ((new_value & 0xff00) == 0 && bset_use_y == relax_ldy) | |
610 | { | |
611 | bfd_put_8 (abfd, code, contents + offset); | |
612 | bfd_put_8 (abfd, new_value, contents + offset + 1); | |
613 | if (start_offset != offset) | |
614 | { | |
615 | m68hc11_elf_relax_delete_bytes (abfd, sec, start_offset, | |
616 | offset - start_offset); | |
617 | end_group--; | |
618 | } | |
619 | } | |
620 | else | |
621 | { | |
622 | can_delete_ldx = 0; | |
623 | } | |
624 | offset = start_offset + isize; | |
625 | } | |
626 | if (can_delete_ldx) | |
627 | { | |
628 | /* Remove the move instruction (3 or 4 bytes win). */ | |
629 | m68hc11_elf_relax_delete_bytes (abfd, sec, ldx_offset, ldx_size); | |
630 | } | |
631 | } | |
632 | ||
633 | /* This function handles relaxing for the 68HC11. | |
634 | ||
b34976b6 | 635 | |
1fd03b5a SC |
636 | and somewhat more difficult to support. */ |
637 | ||
b34976b6 | 638 | static bfd_boolean |
1fd03b5a SC |
639 | m68hc11_elf_relax_section (abfd, sec, link_info, again) |
640 | bfd *abfd; | |
641 | asection *sec; | |
642 | struct bfd_link_info *link_info; | |
b34976b6 | 643 | bfd_boolean *again; |
1fd03b5a SC |
644 | { |
645 | Elf_Internal_Shdr *symtab_hdr; | |
646 | Elf_Internal_Shdr *shndx_hdr; | |
647 | Elf_Internal_Rela *internal_relocs; | |
648 | Elf_Internal_Rela *free_relocs = NULL; | |
649 | Elf_Internal_Rela *irel, *irelend; | |
650 | bfd_byte *contents = NULL; | |
651 | bfd_byte *free_contents = NULL; | |
1fd03b5a SC |
652 | Elf32_External_Sym *free_extsyms = NULL; |
653 | Elf_Internal_Rela *prev_insn_branch = NULL; | |
654 | Elf_Internal_Rela *prev_insn_group = NULL; | |
655 | unsigned insn_group_value = 0; | |
1f4c5b47 | 656 | Elf_Internal_Sym *isymbuf = NULL; |
1fd03b5a SC |
657 | |
658 | /* Assume nothing changes. */ | |
b34976b6 | 659 | *again = FALSE; |
1fd03b5a SC |
660 | |
661 | /* We don't have to do anything for a relocateable link, if | |
662 | this section does not have relocs, or if this is not a | |
663 | code section. */ | |
664 | if (link_info->relocateable | |
665 | || (sec->flags & SEC_RELOC) == 0 | |
666 | || sec->reloc_count == 0 | |
667 | || (sec->flags & SEC_CODE) == 0) | |
b34976b6 | 668 | return TRUE; |
1fd03b5a SC |
669 | |
670 | /* If this is the first time we have been called for this section, | |
671 | initialize the cooked size. */ | |
672 | if (sec->_cooked_size == 0) | |
673 | sec->_cooked_size = sec->_raw_size; | |
674 | ||
675 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
676 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; | |
677 | ||
678 | /* Get a copy of the native relocations. */ | |
679 | internal_relocs = (_bfd_elf32_link_read_relocs | |
680 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, | |
681 | link_info->keep_memory)); | |
682 | if (internal_relocs == NULL) | |
683 | goto error_return; | |
684 | if (! link_info->keep_memory) | |
685 | free_relocs = internal_relocs; | |
686 | ||
687 | /* Checking for branch relaxation relies on the relocations to | |
688 | be sorted on 'r_offset'. This is not guaranteed so we must sort. */ | |
689 | qsort (internal_relocs, sec->reloc_count, sizeof (Elf_Internal_Rela), | |
690 | compare_reloc); | |
691 | ||
692 | /* Walk through them looking for relaxing opportunities. */ | |
693 | irelend = internal_relocs + sec->reloc_count; | |
694 | for (irel = internal_relocs; irel < irelend; irel++) | |
695 | { | |
696 | bfd_vma symval; | |
697 | bfd_vma value; | |
1f4c5b47 | 698 | Elf_Internal_Sym *isym; |
9b691193 | 699 | asection *sym_sec; |
196486be | 700 | int is_far = 0; |
1fd03b5a SC |
701 | |
702 | /* If this isn't something that can be relaxed, then ignore | |
703 | this reloc. */ | |
704 | if (ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_16 | |
705 | && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_JUMP | |
706 | && ELF32_R_TYPE (irel->r_info) != (int) R_M68HC11_RL_GROUP) | |
707 | { | |
708 | prev_insn_branch = 0; | |
709 | prev_insn_group = 0; | |
710 | continue; | |
711 | } | |
712 | ||
713 | /* Get the section contents if we haven't done so already. */ | |
714 | if (contents == NULL) | |
715 | { | |
716 | /* Get cached copy if it exists. */ | |
717 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
718 | contents = elf_section_data (sec)->this_hdr.contents; | |
719 | else | |
720 | { | |
721 | /* Go get them off disk. */ | |
722 | contents = (bfd_byte *) bfd_malloc (sec->_raw_size); | |
723 | if (contents == NULL) | |
724 | goto error_return; | |
725 | free_contents = contents; | |
726 | ||
727 | if (! bfd_get_section_contents (abfd, sec, contents, | |
728 | (file_ptr) 0, sec->_raw_size)) | |
729 | goto error_return; | |
730 | } | |
731 | } | |
732 | ||
733 | /* Try to eliminate an unconditional 8 bit pc-relative branch | |
734 | which immediately follows a conditional 8 bit pc-relative | |
735 | branch around the unconditional branch. | |
736 | ||
737 | original: new: | |
738 | bCC lab1 bCC' lab2 | |
739 | bra lab2 | |
740 | lab1: lab1: | |
741 | ||
742 | This happens when the bCC can't reach lab2 at assembly time, | |
743 | but due to other relaxations it can reach at link time. */ | |
744 | if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_JUMP) | |
745 | { | |
746 | Elf_Internal_Rela *nrel; | |
747 | unsigned char code; | |
748 | unsigned char roffset; | |
749 | ||
750 | prev_insn_branch = 0; | |
751 | prev_insn_group = 0; | |
b34976b6 | 752 | |
1fd03b5a | 753 | /* Do nothing if this reloc is the last byte in the section. */ |
196486be | 754 | if (irel->r_offset + 2 >= sec->_cooked_size) |
1fd03b5a SC |
755 | continue; |
756 | ||
757 | /* See if the next instruction is an unconditional pc-relative | |
758 | branch, more often than not this test will fail, so we | |
759 | test it first to speed things up. */ | |
760 | code = bfd_get_8 (abfd, contents + irel->r_offset + 2); | |
761 | if (code != 0x7e) | |
762 | continue; | |
763 | ||
764 | /* Also make sure the next relocation applies to the next | |
765 | instruction and that it's a pc-relative 8 bit branch. */ | |
766 | nrel = irel + 1; | |
767 | if (nrel == irelend | |
768 | || irel->r_offset + 3 != nrel->r_offset | |
769 | || ELF32_R_TYPE (nrel->r_info) != (int) R_M68HC11_16) | |
770 | continue; | |
771 | ||
772 | /* Make sure our destination immediately follows the | |
773 | unconditional branch. */ | |
774 | roffset = bfd_get_8 (abfd, contents + irel->r_offset + 1); | |
775 | if (roffset != 3) | |
776 | continue; | |
777 | ||
778 | prev_insn_branch = irel; | |
779 | prev_insn_group = 0; | |
780 | continue; | |
781 | } | |
782 | ||
783 | /* Read this BFD's symbols if we haven't done so already. */ | |
1f4c5b47 | 784 | if (isymbuf == NULL && symtab_hdr->sh_info != 0) |
1fd03b5a | 785 | { |
1f4c5b47 SC |
786 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
787 | if (isymbuf == NULL) | |
788 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
789 | symtab_hdr->sh_info, 0, | |
790 | NULL, NULL, NULL); | |
791 | if (isymbuf == NULL) | |
792 | goto error_return; | |
1fd03b5a SC |
793 | } |
794 | ||
795 | /* Get the value of the symbol referred to by the reloc. */ | |
796 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
797 | { | |
1fd03b5a | 798 | /* A local symbol. */ |
1f4c5b47 | 799 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
196486be | 800 | is_far = isym->st_other & STO_M68HC12_FAR; |
1f4c5b47 SC |
801 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
802 | symval = (isym->st_value | |
1fd03b5a SC |
803 | + sym_sec->output_section->vma |
804 | + sym_sec->output_offset); | |
805 | } | |
806 | else | |
807 | { | |
808 | unsigned long indx; | |
809 | struct elf_link_hash_entry *h; | |
810 | ||
811 | /* An external symbol. */ | |
812 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
813 | h = elf_sym_hashes (abfd)[indx]; | |
814 | BFD_ASSERT (h != NULL); | |
815 | if (h->root.type != bfd_link_hash_defined | |
816 | && h->root.type != bfd_link_hash_defweak) | |
817 | { | |
818 | /* This appears to be a reference to an undefined | |
819 | symbol. Just ignore it--it will be caught by the | |
820 | regular reloc processing. */ | |
821 | prev_insn_branch = 0; | |
822 | prev_insn_group = 0; | |
823 | continue; | |
824 | } | |
825 | ||
196486be | 826 | is_far = h->other & STO_M68HC12_FAR; |
9b691193 SC |
827 | isym = 0; |
828 | sym_sec = h->root.u.def.section; | |
1fd03b5a | 829 | symval = (h->root.u.def.value |
9b691193 SC |
830 | + sym_sec->output_section->vma |
831 | + sym_sec->output_offset); | |
1fd03b5a SC |
832 | } |
833 | ||
834 | if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_RL_GROUP) | |
835 | { | |
836 | prev_insn_branch = 0; | |
837 | prev_insn_group = 0; | |
b34976b6 | 838 | |
1fd03b5a SC |
839 | /* Do nothing if this reloc is the last byte in the section. */ |
840 | if (irel->r_offset == sec->_cooked_size) | |
841 | continue; | |
842 | ||
843 | prev_insn_group = irel; | |
1f4c5b47 | 844 | insn_group_value = isym->st_value; |
1fd03b5a SC |
845 | continue; |
846 | } | |
847 | ||
9b691193 SC |
848 | /* When we relax some bytes, the size of our section changes. |
849 | This affects the layout of next input sections that go in our | |
850 | output section. When the symbol is part of another section that | |
851 | will go in the same output section as the current one, it's | |
852 | final address may now be incorrect (too far). We must let the | |
853 | linker re-compute all section offsets before processing this | |
854 | reloc. Code example: | |
855 | ||
856 | Initial Final | |
857 | .sect .text section size = 6 section size = 4 | |
858 | jmp foo | |
859 | jmp bar | |
860 | .sect .text.foo_bar output_offset = 6 output_offset = 4 | |
861 | foo: rts | |
862 | bar: rts | |
863 | ||
864 | If we process the reloc now, the jmp bar is replaced by a | |
865 | relative branch to the initial bar address (output_offset 6). */ | |
866 | if (*again && sym_sec != sec | |
867 | && sym_sec->output_section == sec->output_section) | |
868 | { | |
869 | prev_insn_group = 0; | |
870 | prev_insn_branch = 0; | |
871 | continue; | |
872 | } | |
b34976b6 | 873 | |
1fd03b5a SC |
874 | value = symval; |
875 | /* Try to turn a far branch to a near branch. */ | |
876 | if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16 | |
877 | && prev_insn_branch) | |
878 | { | |
879 | bfd_vma offset; | |
880 | unsigned char code; | |
881 | ||
882 | offset = value - (prev_insn_branch->r_offset | |
883 | + sec->output_section->vma | |
884 | + sec->output_offset + 2); | |
885 | ||
886 | /* If the offset is still out of -128..+127 range, | |
887 | leave that far branch unchanged. */ | |
888 | if ((offset & 0xff80) != 0 && (offset & 0xff80) != 0xff80) | |
889 | { | |
890 | prev_insn_branch = 0; | |
891 | continue; | |
892 | } | |
893 | ||
894 | /* Shrink the branch. */ | |
895 | code = bfd_get_8 (abfd, contents + prev_insn_branch->r_offset); | |
896 | if (code == 0x7e) | |
897 | { | |
898 | code = 0x20; | |
899 | bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset); | |
196486be | 900 | bfd_put_8 (abfd, 0xff, |
1fd03b5a | 901 | contents + prev_insn_branch->r_offset + 1); |
196486be | 902 | irel->r_offset = prev_insn_branch->r_offset + 1; |
1fd03b5a | 903 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
196486be | 904 | R_M68HC11_PCREL_8); |
1fd03b5a | 905 | m68hc11_elf_relax_delete_bytes (abfd, sec, |
196486be | 906 | irel->r_offset + 1, 1); |
1fd03b5a SC |
907 | } |
908 | else | |
909 | { | |
910 | code ^= 0x1; | |
911 | bfd_put_8 (abfd, code, contents + prev_insn_branch->r_offset); | |
196486be | 912 | bfd_put_8 (abfd, 0xff, |
1fd03b5a | 913 | contents + prev_insn_branch->r_offset + 1); |
196486be | 914 | irel->r_offset = prev_insn_branch->r_offset + 1; |
1fd03b5a | 915 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
196486be | 916 | R_M68HC11_PCREL_8); |
1fd03b5a | 917 | m68hc11_elf_relax_delete_bytes (abfd, sec, |
196486be | 918 | irel->r_offset + 1, 3); |
1fd03b5a SC |
919 | } |
920 | prev_insn_branch = 0; | |
b34976b6 | 921 | *again = TRUE; |
1fd03b5a SC |
922 | } |
923 | ||
924 | /* Try to turn a 16 bit address into a 8 bit page0 address. */ | |
925 | else if (ELF32_R_TYPE (irel->r_info) == (int) R_M68HC11_16 | |
926 | && (value & 0xff00) == 0) | |
927 | { | |
928 | unsigned char code; | |
929 | unsigned short offset; | |
930 | struct m68hc11_direct_relax *rinfo; | |
931 | ||
932 | prev_insn_branch = 0; | |
933 | offset = bfd_get_16 (abfd, contents + irel->r_offset); | |
934 | offset += value; | |
935 | if ((offset & 0xff00) != 0) | |
936 | { | |
937 | prev_insn_group = 0; | |
938 | continue; | |
939 | } | |
940 | ||
941 | if (prev_insn_group) | |
942 | { | |
9b691193 | 943 | unsigned long old_sec_size = sec->_cooked_size; |
b34976b6 | 944 | |
1fd03b5a SC |
945 | /* Note that we've changed the reldection contents, etc. */ |
946 | elf_section_data (sec)->relocs = internal_relocs; | |
947 | free_relocs = NULL; | |
948 | ||
949 | elf_section_data (sec)->this_hdr.contents = contents; | |
950 | free_contents = NULL; | |
951 | ||
1f4c5b47 | 952 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
1fd03b5a SC |
953 | free_extsyms = NULL; |
954 | ||
955 | m68hc11_relax_group (abfd, sec, contents, offset, | |
956 | prev_insn_group->r_offset, | |
957 | insn_group_value); | |
958 | irel = prev_insn_group; | |
959 | prev_insn_group = 0; | |
960 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
961 | R_M68HC11_NONE); | |
9b691193 | 962 | if (sec->_cooked_size != old_sec_size) |
b34976b6 | 963 | *again = TRUE; |
1fd03b5a SC |
964 | continue; |
965 | } | |
b34976b6 | 966 | |
1fd03b5a SC |
967 | /* Get the opcode. */ |
968 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
969 | rinfo = find_relaxable_insn (code); | |
970 | if (rinfo == 0) | |
971 | { | |
972 | prev_insn_group = 0; | |
973 | continue; | |
974 | } | |
975 | ||
976 | /* Note that we've changed the reldection contents, etc. */ | |
977 | elf_section_data (sec)->relocs = internal_relocs; | |
978 | free_relocs = NULL; | |
979 | ||
980 | elf_section_data (sec)->this_hdr.contents = contents; | |
981 | free_contents = NULL; | |
982 | ||
1f4c5b47 | 983 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
1fd03b5a SC |
984 | free_extsyms = NULL; |
985 | ||
986 | /* Fix the opcode. */ | |
987 | /* printf ("A relaxable case : 0x%02x (%s)\n", | |
988 | code, rinfo->name); */ | |
989 | bfd_put_8 (abfd, rinfo->direct_code, | |
990 | contents + irel->r_offset - 1); | |
991 | ||
992 | /* Delete one byte of data (upper byte of address). */ | |
993 | m68hc11_elf_relax_delete_bytes (abfd, sec, irel->r_offset, 1); | |
994 | ||
995 | /* Fix the relocation's type. */ | |
996 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
997 | R_M68HC11_8); | |
998 | ||
9b691193 | 999 | /* That will change things, so, we should relax again. */ |
b34976b6 | 1000 | *again = TRUE; |
1fd03b5a | 1001 | } |
196486be | 1002 | else if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_16 && !is_far) |
1fd03b5a SC |
1003 | { |
1004 | unsigned char code; | |
1005 | bfd_vma offset; | |
1006 | ||
1007 | prev_insn_branch = 0; | |
1008 | code = bfd_get_8 (abfd, contents + irel->r_offset - 1); | |
196486be | 1009 | if (code == 0x7e || code == 0xbd) |
1fd03b5a SC |
1010 | { |
1011 | offset = value - (irel->r_offset | |
1012 | + sec->output_section->vma | |
1013 | + sec->output_offset + 1); | |
1014 | offset += bfd_get_16 (abfd, contents + irel->r_offset); | |
1015 | ||
1016 | /* If the offset is still out of -128..+127 range, | |
1017 | leave that far branch unchanged. */ | |
1018 | if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80) | |
1019 | { | |
1020 | ||
1021 | /* Note that we've changed the reldection contents, etc. */ | |
1022 | elf_section_data (sec)->relocs = internal_relocs; | |
1023 | free_relocs = NULL; | |
b34976b6 | 1024 | |
1fd03b5a SC |
1025 | elf_section_data (sec)->this_hdr.contents = contents; |
1026 | free_contents = NULL; | |
b34976b6 | 1027 | |
1f4c5b47 | 1028 | symtab_hdr->contents = (bfd_byte *) isymbuf; |
1fd03b5a SC |
1029 | free_extsyms = NULL; |
1030 | ||
1031 | /* Shrink the branch. */ | |
196486be | 1032 | code = (code == 0x7e) ? 0x20 : 0x8d; |
1fd03b5a SC |
1033 | bfd_put_8 (abfd, code, |
1034 | contents + irel->r_offset - 1); | |
196486be | 1035 | bfd_put_8 (abfd, 0xff, |
1fd03b5a SC |
1036 | contents + irel->r_offset); |
1037 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
196486be | 1038 | R_M68HC11_PCREL_8); |
1fd03b5a SC |
1039 | m68hc11_elf_relax_delete_bytes (abfd, sec, |
1040 | irel->r_offset + 1, 1); | |
9b691193 | 1041 | /* That will change things, so, we should relax again. */ |
b34976b6 | 1042 | *again = TRUE; |
1fd03b5a SC |
1043 | } |
1044 | } | |
1045 | } | |
1046 | prev_insn_branch = 0; | |
1047 | } | |
1048 | ||
1049 | if (free_relocs != NULL) | |
1050 | { | |
1051 | free (free_relocs); | |
1052 | free_relocs = NULL; | |
1053 | } | |
1054 | ||
1055 | if (free_contents != NULL) | |
1056 | { | |
1057 | if (! link_info->keep_memory) | |
1058 | free (free_contents); | |
1059 | else | |
1060 | { | |
1061 | /* Cache the section contents for elf_link_input_bfd. */ | |
1062 | elf_section_data (sec)->this_hdr.contents = contents; | |
1063 | } | |
1064 | free_contents = NULL; | |
1065 | } | |
1066 | ||
1067 | if (free_extsyms != NULL) | |
1068 | { | |
1069 | if (! link_info->keep_memory) | |
1070 | free (free_extsyms); | |
1071 | else | |
1072 | { | |
1073 | /* Cache the symbols for elf_link_input_bfd. */ | |
1f4c5b47 | 1074 | symtab_hdr->contents = (unsigned char *) isymbuf; |
1fd03b5a SC |
1075 | } |
1076 | free_extsyms = NULL; | |
1077 | } | |
1078 | ||
b34976b6 | 1079 | return TRUE; |
1fd03b5a SC |
1080 | |
1081 | error_return: | |
1082 | if (free_relocs != NULL) | |
1083 | free (free_relocs); | |
1084 | if (free_contents != NULL) | |
1085 | free (free_contents); | |
1086 | if (free_extsyms != NULL) | |
1087 | free (free_extsyms); | |
b34976b6 | 1088 | return FALSE; |
1fd03b5a SC |
1089 | } |
1090 | ||
1091 | /* Delete some bytes from a section while relaxing. */ | |
1092 | ||
1093 | static void | |
1094 | m68hc11_elf_relax_delete_bytes (abfd, sec, addr, count) | |
1095 | bfd *abfd; | |
1096 | asection *sec; | |
1097 | bfd_vma addr; | |
1098 | int count; | |
1099 | { | |
1100 | Elf_Internal_Shdr *symtab_hdr; | |
1fd03b5a | 1101 | unsigned int sec_shndx; |
1fd03b5a SC |
1102 | bfd_byte *contents; |
1103 | Elf_Internal_Rela *irel, *irelend; | |
1104 | bfd_vma toaddr; | |
1f4c5b47 | 1105 | Elf_Internal_Sym *isymbuf, *isym, *isymend; |
1fd03b5a SC |
1106 | struct elf_link_hash_entry **sym_hashes; |
1107 | struct elf_link_hash_entry **end_hashes; | |
1108 | unsigned int symcount; | |
1109 | ||
1110 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1f4c5b47 | 1111 | isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents; |
1fd03b5a SC |
1112 | |
1113 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1114 | ||
1115 | contents = elf_section_data (sec)->this_hdr.contents; | |
1116 | ||
1117 | toaddr = sec->_cooked_size; | |
1118 | ||
1119 | irel = elf_section_data (sec)->relocs; | |
1120 | irelend = irel + sec->reloc_count; | |
1121 | ||
1122 | /* Actually delete the bytes. */ | |
1123 | memmove (contents + addr, contents + addr + count, | |
1124 | (size_t) (toaddr - addr - count)); | |
1fd03b5a | 1125 | |
1f4c5b47 | 1126 | sec->_cooked_size -= count; |
b34976b6 | 1127 | |
1fd03b5a SC |
1128 | /* Adjust all the relocs. */ |
1129 | for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) | |
1130 | { | |
1131 | unsigned char code; | |
1132 | unsigned char offset; | |
1133 | unsigned short raddr; | |
1134 | unsigned long old_offset; | |
1135 | int branch_pos; | |
1136 | ||
1137 | old_offset = irel->r_offset; | |
1138 | ||
1139 | /* See if this reloc was for the bytes we have deleted, in which | |
1140 | case we no longer care about it. Don't delete relocs which | |
1141 | represent addresses, though. */ | |
1142 | if (ELF32_R_TYPE (irel->r_info) != R_M68HC11_RL_JUMP | |
1143 | && irel->r_offset >= addr && irel->r_offset < addr + count) | |
1144 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
1145 | R_M68HC11_NONE); | |
1146 | ||
1147 | if (ELF32_R_TYPE (irel->r_info) == R_M68HC11_NONE) | |
1148 | continue; | |
1149 | ||
1150 | /* Get the new reloc address. */ | |
1151 | if ((irel->r_offset > addr | |
1152 | && irel->r_offset < toaddr)) | |
1153 | irel->r_offset -= count; | |
1154 | ||
1155 | /* If this is a PC relative reloc, see if the range it covers | |
1156 | includes the bytes we have deleted. */ | |
1157 | switch (ELF32_R_TYPE (irel->r_info)) | |
1158 | { | |
1159 | default: | |
1160 | break; | |
1161 | ||
1162 | case R_M68HC11_RL_JUMP: | |
1163 | code = bfd_get_8 (abfd, contents + irel->r_offset); | |
1164 | switch (code) | |
1165 | { | |
1166 | /* jsr and jmp instruction are also marked with RL_JUMP | |
1167 | relocs but no adjustment must be made. */ | |
1168 | case 0x7e: | |
1169 | case 0x9d: | |
1170 | case 0xbd: | |
1171 | continue; | |
1172 | ||
1173 | case 0x12: | |
1174 | case 0x13: | |
1175 | branch_pos = 3; | |
1176 | raddr = 4; | |
1177 | ||
1178 | /* Special case when we translate a brclr N,y into brclr *<addr> | |
1179 | In this case, the 0x18 page2 prefix is removed. | |
1180 | The reloc offset is not modified but the instruction | |
1181 | size is reduced by 1. */ | |
1182 | if (old_offset == addr) | |
1183 | raddr++; | |
1184 | break; | |
1185 | ||
1186 | case 0x1e: | |
1187 | case 0x1f: | |
1188 | branch_pos = 3; | |
1189 | raddr = 4; | |
1190 | break; | |
1191 | ||
1192 | case 0x18: | |
1193 | branch_pos = 4; | |
1194 | raddr = 5; | |
1195 | break; | |
1196 | ||
1197 | default: | |
1198 | branch_pos = 1; | |
1199 | raddr = 2; | |
1200 | break; | |
1201 | } | |
1202 | offset = bfd_get_8 (abfd, contents + irel->r_offset + branch_pos); | |
1203 | raddr += old_offset; | |
1204 | raddr += ((unsigned short) offset | ((offset & 0x80) ? 0xff00 : 0)); | |
30491647 | 1205 | if (irel->r_offset < addr && raddr > addr) |
1fd03b5a SC |
1206 | { |
1207 | offset -= count; | |
1208 | bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos); | |
1209 | } | |
1210 | else if (irel->r_offset >= addr && raddr <= addr) | |
1211 | { | |
1212 | offset += count; | |
1213 | bfd_put_8 (abfd, offset, contents + irel->r_offset + branch_pos); | |
1214 | } | |
1215 | else | |
1216 | { | |
1217 | /*printf ("Not adjusted 0x%04x [0x%4x 0x%4x]\n", raddr, | |
1218 | irel->r_offset, addr);*/ | |
1219 | } | |
b34976b6 | 1220 | |
1fd03b5a SC |
1221 | break; |
1222 | } | |
1223 | } | |
1224 | ||
1225 | /* Adjust the local symbols defined in this section. */ | |
1f4c5b47 SC |
1226 | isymend = isymbuf + symtab_hdr->sh_info; |
1227 | for (isym = isymbuf; isym < isymend; isym++) | |
1fd03b5a | 1228 | { |
1f4c5b47 SC |
1229 | if (isym->st_shndx == sec_shndx |
1230 | && isym->st_value > addr | |
196486be | 1231 | && isym->st_value <= toaddr) |
1f4c5b47 | 1232 | isym->st_value -= count; |
1fd03b5a SC |
1233 | } |
1234 | ||
1235 | /* Now adjust the global symbols defined in this section. */ | |
1236 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1237 | - symtab_hdr->sh_info); | |
1238 | sym_hashes = elf_sym_hashes (abfd); | |
1239 | end_hashes = sym_hashes + symcount; | |
1240 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1241 | { | |
1242 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1243 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1244 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1245 | && sym_hash->root.u.def.section == sec | |
1246 | && sym_hash->root.u.def.value > addr | |
196486be | 1247 | && sym_hash->root.u.def.value <= toaddr) |
1fd03b5a SC |
1248 | { |
1249 | sym_hash->root.u.def.value -= count; | |
1250 | } | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* Look through the relocs for a section during the first phase. | |
1255 | Since we don't do .gots or .plts, we just need to consider the | |
1256 | virtual table relocs for gc. */ | |
1257 | ||
b34976b6 | 1258 | static bfd_boolean |
1fd03b5a SC |
1259 | elf32_m68hc11_check_relocs (abfd, info, sec, relocs) |
1260 | bfd * abfd; | |
1261 | struct bfd_link_info * info; | |
1262 | asection * sec; | |
1263 | const Elf_Internal_Rela * relocs; | |
1264 | { | |
1265 | Elf_Internal_Shdr * symtab_hdr; | |
1266 | struct elf_link_hash_entry ** sym_hashes; | |
1267 | struct elf_link_hash_entry ** sym_hashes_end; | |
1268 | const Elf_Internal_Rela * rel; | |
1269 | const Elf_Internal_Rela * rel_end; | |
1270 | ||
1271 | if (info->relocateable) | |
b34976b6 | 1272 | return TRUE; |
1fd03b5a SC |
1273 | |
1274 | symtab_hdr = & elf_tdata (abfd)->symtab_hdr; | |
1275 | sym_hashes = elf_sym_hashes (abfd); | |
1276 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
1277 | if (!elf_bad_symtab (abfd)) | |
1278 | sym_hashes_end -= symtab_hdr->sh_info; | |
1279 | ||
1280 | rel_end = relocs + sec->reloc_count; | |
1281 | ||
1282 | for (rel = relocs; rel < rel_end; rel++) | |
1283 | { | |
1284 | struct elf_link_hash_entry * h; | |
1285 | unsigned long r_symndx; | |
1286 | ||
1287 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1288 | ||
1289 | if (r_symndx < symtab_hdr->sh_info) | |
1290 | h = NULL; | |
1291 | else | |
1292 | h = sym_hashes [r_symndx - symtab_hdr->sh_info]; | |
1293 | ||
1294 | switch (ELF32_R_TYPE (rel->r_info)) | |
1295 | { | |
1296 | /* This relocation describes the C++ object vtable hierarchy. | |
1297 | Reconstruct it for later use during GC. */ | |
1298 | case R_M68HC11_GNU_VTINHERIT: | |
1299 | if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
b34976b6 | 1300 | return FALSE; |
1fd03b5a SC |
1301 | break; |
1302 | ||
1303 | /* This relocation describes which C++ vtable entries are actually | |
1304 | used. Record for later use during GC. */ | |
1305 | case R_M68HC11_GNU_VTENTRY: | |
1306 | if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
b34976b6 | 1307 | return FALSE; |
1fd03b5a SC |
1308 | break; |
1309 | } | |
1310 | } | |
1311 | ||
b34976b6 | 1312 | return TRUE; |
1fd03b5a SC |
1313 | } |
1314 | ||
1315 | /* Relocate a 68hc11/68hc12 ELF section. */ | |
b34976b6 | 1316 | static bfd_boolean |
1fd03b5a SC |
1317 | elf32_m68hc11_relocate_section (output_bfd, info, input_bfd, input_section, |
1318 | contents, relocs, local_syms, local_sections) | |
1319 | bfd *output_bfd ATTRIBUTE_UNUSED; | |
1320 | struct bfd_link_info *info; | |
1321 | bfd *input_bfd; | |
1322 | asection *input_section; | |
1323 | bfd_byte *contents; | |
1324 | Elf_Internal_Rela *relocs; | |
1325 | Elf_Internal_Sym *local_syms; | |
1326 | asection **local_sections; | |
1327 | { | |
1328 | Elf_Internal_Shdr *symtab_hdr; | |
1329 | struct elf_link_hash_entry **sym_hashes; | |
1330 | Elf_Internal_Rela *rel, *relend; | |
1331 | const char *name; | |
1332 | ||
1333 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1334 | sym_hashes = elf_sym_hashes (input_bfd); | |
1335 | ||
1336 | rel = relocs; | |
1337 | relend = relocs + input_section->reloc_count; | |
1338 | for (; rel < relend; rel++) | |
1339 | { | |
1340 | int r_type; | |
1341 | reloc_howto_type *howto; | |
1342 | unsigned long r_symndx; | |
1343 | Elf_Internal_Sym *sym; | |
1344 | asection *sec; | |
1345 | struct elf_link_hash_entry *h; | |
1346 | bfd_vma relocation; | |
1347 | bfd_reloc_status_type r; | |
1348 | ||
1349 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1350 | r_type = ELF32_R_TYPE (rel->r_info); | |
1351 | ||
1352 | if (r_type == R_M68HC11_GNU_VTENTRY | |
1353 | || r_type == R_M68HC11_GNU_VTINHERIT ) | |
1354 | continue; | |
1355 | ||
1356 | howto = elf_m68hc11_howto_table + r_type; | |
1357 | ||
1358 | if (info->relocateable) | |
1359 | { | |
1360 | /* This is a relocateable link. We don't have to change | |
1361 | anything, unless the reloc is against a section symbol, | |
1362 | in which case we have to adjust according to where the | |
1363 | section symbol winds up in the output section. */ | |
1364 | if (r_symndx < symtab_hdr->sh_info) | |
1365 | { | |
1366 | sym = local_syms + r_symndx; | |
1367 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1368 | { | |
1369 | sec = local_sections[r_symndx]; | |
1370 | rel->r_addend += sec->output_offset + sym->st_value; | |
1371 | } | |
1372 | } | |
1373 | ||
1374 | continue; | |
1375 | } | |
1376 | ||
1377 | /* This is a final link. */ | |
1378 | h = NULL; | |
1379 | sym = NULL; | |
1380 | sec = NULL; | |
1381 | if (r_symndx < symtab_hdr->sh_info) | |
1382 | { | |
1383 | sym = local_syms + r_symndx; | |
1384 | sec = local_sections[r_symndx]; | |
1385 | relocation = (sec->output_section->vma | |
1386 | + sec->output_offset | |
1387 | + sym->st_value); | |
1388 | } | |
1389 | else | |
1390 | { | |
1391 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1392 | while (h->root.type == bfd_link_hash_indirect | |
1393 | || h->root.type == bfd_link_hash_warning) | |
1394 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1395 | if (h->root.type == bfd_link_hash_defined | |
1396 | || h->root.type == bfd_link_hash_defweak) | |
1397 | { | |
1398 | sec = h->root.u.def.section; | |
1399 | relocation = (h->root.u.def.value | |
1400 | + sec->output_section->vma | |
1401 | + sec->output_offset); | |
1402 | } | |
1403 | else if (h->root.type == bfd_link_hash_undefweak) | |
1404 | relocation = 0; | |
1405 | else | |
1406 | { | |
1407 | if (!((*info->callbacks->undefined_symbol) | |
1408 | (info, h->root.root.string, input_bfd, | |
b34976b6 AM |
1409 | input_section, rel->r_offset, TRUE))) |
1410 | return FALSE; | |
1fd03b5a SC |
1411 | relocation = 0; |
1412 | } | |
1413 | } | |
1414 | ||
1415 | if (h != NULL) | |
1416 | name = h->root.root.string; | |
1417 | else | |
1418 | { | |
1419 | name = (bfd_elf_string_from_elf_section | |
1420 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1421 | if (name == NULL || *name == '\0') | |
1422 | name = bfd_section_name (input_bfd, sec); | |
1423 | } | |
1424 | ||
1425 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1426 | contents, rel->r_offset, | |
1427 | relocation, rel->r_addend); | |
1428 | ||
1429 | if (r != bfd_reloc_ok) | |
1430 | { | |
1431 | const char * msg = (const char *) 0; | |
1432 | ||
1433 | switch (r) | |
1434 | { | |
1435 | case bfd_reloc_overflow: | |
1436 | if (!((*info->callbacks->reloc_overflow) | |
1437 | (info, name, howto->name, (bfd_vma) 0, | |
1438 | input_bfd, input_section, rel->r_offset))) | |
b34976b6 | 1439 | return FALSE; |
1fd03b5a SC |
1440 | break; |
1441 | ||
1442 | case bfd_reloc_undefined: | |
1443 | if (!((*info->callbacks->undefined_symbol) | |
1444 | (info, name, input_bfd, input_section, | |
b34976b6 AM |
1445 | rel->r_offset, TRUE))) |
1446 | return FALSE; | |
1fd03b5a SC |
1447 | break; |
1448 | ||
1449 | case bfd_reloc_outofrange: | |
1450 | msg = _ ("internal error: out of range error"); | |
1451 | goto common_error; | |
1452 | ||
1453 | case bfd_reloc_notsupported: | |
1454 | msg = _ ("internal error: unsupported relocation error"); | |
1455 | goto common_error; | |
1456 | ||
1457 | case bfd_reloc_dangerous: | |
1458 | msg = _ ("internal error: dangerous error"); | |
1459 | goto common_error; | |
1460 | ||
1461 | default: | |
1462 | msg = _ ("internal error: unknown error"); | |
1463 | /* fall through */ | |
1464 | ||
1465 | common_error: | |
1466 | if (!((*info->callbacks->warning) | |
1467 | (info, msg, name, input_bfd, input_section, | |
1468 | rel->r_offset))) | |
b34976b6 | 1469 | return FALSE; |
1fd03b5a SC |
1470 | break; |
1471 | } | |
1472 | } | |
1473 | } | |
1474 | ||
b34976b6 | 1475 | return TRUE; |
1fd03b5a SC |
1476 | } |
1477 | ||
1478 | ||
96405e3c SC |
1479 | \f |
1480 | /* Set and control ELF flags in ELF header. */ | |
1481 | ||
b34976b6 | 1482 | bfd_boolean |
96405e3c SC |
1483 | _bfd_m68hc11_elf_set_private_flags (abfd, flags) |
1484 | bfd *abfd; | |
1485 | flagword flags; | |
1486 | { | |
1487 | BFD_ASSERT (!elf_flags_init (abfd) | |
1488 | || elf_elfheader (abfd)->e_flags == flags); | |
1489 | ||
1490 | elf_elfheader (abfd)->e_flags = flags; | |
b34976b6 AM |
1491 | elf_flags_init (abfd) = TRUE; |
1492 | return TRUE; | |
96405e3c SC |
1493 | } |
1494 | ||
1495 | /* Merge backend specific data from an object file to the output | |
1496 | object file when linking. */ | |
1497 | ||
b34976b6 | 1498 | bfd_boolean |
96405e3c SC |
1499 | _bfd_m68hc11_elf_merge_private_bfd_data (ibfd, obfd) |
1500 | bfd *ibfd; | |
1501 | bfd *obfd; | |
1502 | { | |
1503 | flagword old_flags; | |
1504 | flagword new_flags; | |
b34976b6 | 1505 | bfd_boolean ok = TRUE; |
96405e3c SC |
1506 | |
1507 | /* Check if we have the same endianess */ | |
b34976b6 AM |
1508 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) |
1509 | return FALSE; | |
96405e3c SC |
1510 | |
1511 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
1512 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
b34976b6 | 1513 | return TRUE; |
96405e3c SC |
1514 | |
1515 | new_flags = elf_elfheader (ibfd)->e_flags; | |
1516 | elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI; | |
1517 | old_flags = elf_elfheader (obfd)->e_flags; | |
1518 | ||
1519 | if (! elf_flags_init (obfd)) | |
1520 | { | |
b34976b6 | 1521 | elf_flags_init (obfd) = TRUE; |
96405e3c SC |
1522 | elf_elfheader (obfd)->e_flags = new_flags; |
1523 | elf_elfheader (obfd)->e_ident[EI_CLASS] | |
1524 | = elf_elfheader (ibfd)->e_ident[EI_CLASS]; | |
1525 | ||
1526 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
1527 | && bfd_get_arch_info (obfd)->the_default) | |
1528 | { | |
1529 | if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
1530 | bfd_get_mach (ibfd))) | |
b34976b6 | 1531 | return FALSE; |
96405e3c SC |
1532 | } |
1533 | ||
b34976b6 | 1534 | return TRUE; |
96405e3c SC |
1535 | } |
1536 | ||
1537 | /* Check ABI compatibility. */ | |
1538 | if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32)) | |
1539 | { | |
1540 | (*_bfd_error_handler) | |
1541 | (_("%s: linking files compiled for 16-bit integers (-mshort) " | |
1542 | "and others for 32-bit integers"), | |
1543 | bfd_archive_filename (ibfd)); | |
b34976b6 | 1544 | ok = FALSE; |
96405e3c SC |
1545 | } |
1546 | if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64)) | |
1547 | { | |
1548 | (*_bfd_error_handler) | |
1549 | (_("%s: linking files compiled for 32-bit double (-fshort-double) " | |
1550 | "and others for 64-bit double"), | |
1551 | bfd_archive_filename (ibfd)); | |
b34976b6 | 1552 | ok = FALSE; |
96405e3c SC |
1553 | } |
1554 | new_flags &= ~EF_M68HC11_ABI; | |
1555 | old_flags &= ~EF_M68HC11_ABI; | |
1556 | ||
1557 | /* Warn about any other mismatches */ | |
1558 | if (new_flags != old_flags) | |
1559 | { | |
1560 | (*_bfd_error_handler) | |
1561 | (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"), | |
1562 | bfd_archive_filename (ibfd), (unsigned long) new_flags, | |
1563 | (unsigned long) old_flags); | |
b34976b6 | 1564 | ok = FALSE; |
96405e3c SC |
1565 | } |
1566 | ||
1567 | if (! ok) | |
1568 | { | |
1569 | bfd_set_error (bfd_error_bad_value); | |
b34976b6 | 1570 | return FALSE; |
96405e3c SC |
1571 | } |
1572 | ||
b34976b6 | 1573 | return TRUE; |
96405e3c SC |
1574 | } |
1575 | ||
b34976b6 | 1576 | bfd_boolean |
96405e3c SC |
1577 | _bfd_m68hc11_elf_print_private_bfd_data (abfd, ptr) |
1578 | bfd *abfd; | |
1579 | PTR ptr; | |
1580 | { | |
1581 | FILE *file = (FILE *) ptr; | |
1582 | ||
1583 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
1584 | ||
1585 | /* Print normal ELF private data. */ | |
1586 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
1587 | ||
1588 | /* xgettext:c-format */ | |
1589 | fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); | |
1590 | ||
1591 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32) | |
1592 | fprintf (file, _("[abi=32-bit int,")); | |
1593 | else | |
1594 | fprintf (file, _("[abi=16-bit int,")); | |
1595 | ||
1596 | if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64) | |
1597 | fprintf (file, _(" 64-bit double]")); | |
1598 | else | |
1599 | fprintf (file, _(" 32-bit double]")); | |
1600 | ||
1601 | if (elf_elfheader (abfd)->e_flags & E_M68HC12_BANKS) | |
1602 | fprintf (file, _(" [memory=bank-model]")); | |
1603 | else | |
1604 | fprintf (file, _(" [memory=flat]")); | |
1605 | ||
1606 | fputc ('\n', file); | |
1607 | ||
b34976b6 | 1608 | return TRUE; |
96405e3c SC |
1609 | } |
1610 | ||
60bcf0fa NC |
1611 | /* Below is the only difference between elf32-m68hc12.c and elf32-m68hc11.c. |
1612 | The Motorola spec says to use a different Elf machine code. */ | |
1613 | #define ELF_ARCH bfd_arch_m68hc11 | |
1614 | #define ELF_MACHINE_CODE EM_68HC11 | |
1615 | #define ELF_MAXPAGESIZE 0x1000 | |
1616 | ||
1617 | #define TARGET_BIG_SYM bfd_elf32_m68hc11_vec | |
1618 | #define TARGET_BIG_NAME "elf32-m68hc11" | |
1619 | ||
1620 | #define elf_info_to_howto 0 | |
1621 | #define elf_info_to_howto_rel m68hc11_info_to_howto_rel | |
1fd03b5a | 1622 | #define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section |
9b701e44 SC |
1623 | #define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook |
1624 | #define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook | |
1fd03b5a SC |
1625 | #define elf_backend_check_relocs elf32_m68hc11_check_relocs |
1626 | #define elf_backend_relocate_section elf32_m68hc11_relocate_section | |
60bcf0fa NC |
1627 | #define elf_backend_object_p 0 |
1628 | #define elf_backend_final_write_processing 0 | |
9b701e44 | 1629 | #define elf_backend_can_gc_sections 1 |
96405e3c SC |
1630 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
1631 | _bfd_m68hc11_elf_merge_private_bfd_data | |
1632 | #define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags | |
1633 | #define bfd_elf32_bfd_print_private_bfd_data \ | |
1634 | _bfd_m68hc11_elf_print_private_bfd_data | |
1635 | ||
60bcf0fa | 1636 | #include "elf32-target.h" |