Commit | Line | Data |
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e9f53129 AM |
1 | /* SPU specific support for 32-bit ELF |
2 | ||
b3adc24a | 3 | Copyright (C) 2006-2020 Free Software Foundation, Inc. |
e9f53129 AM |
4 | |
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
cd123cb7 | 9 | the Free Software Foundation; either version 3 of the License, or |
e9f53129 AM |
10 | (at your option) any later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License along | |
18 | with this program; if not, write to the Free Software Foundation, Inc., | |
19 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ | |
20 | ||
e9f53129 | 21 | #include "sysdep.h" |
9dcc4794 | 22 | #include "libiberty.h" |
3db64b00 | 23 | #include "bfd.h" |
e9f53129 AM |
24 | #include "bfdlink.h" |
25 | #include "libbfd.h" | |
26 | #include "elf-bfd.h" | |
27 | #include "elf/spu.h" | |
28 | #include "elf32-spu.h" | |
29 | ||
bb294208 AM |
30 | /* All users of this file have bfd_octets_per_byte (abfd, sec) == 1. */ |
31 | #define OCTETS_PER_BYTE(ABFD, SEC) 1 | |
32 | ||
e9f53129 AM |
33 | /* We use RELA style relocs. Don't define USE_REL. */ |
34 | ||
35 | static bfd_reloc_status_type spu_elf_rel9 (bfd *, arelent *, asymbol *, | |
36 | void *, asection *, | |
37 | bfd *, char **); | |
38 | ||
39 | /* Values of type 'enum elf_spu_reloc_type' are used to index this | |
40 | array, so it must be declared in the order of that type. */ | |
41 | ||
42 | static reloc_howto_type elf_howto_table[] = { | |
07d6d2b8 | 43 | HOWTO (R_SPU_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont, |
e9f53129 AM |
44 | bfd_elf_generic_reloc, "SPU_NONE", |
45 | FALSE, 0, 0x00000000, FALSE), | |
07d6d2b8 | 46 | HOWTO (R_SPU_ADDR10, 4, 2, 10, FALSE, 14, complain_overflow_bitfield, |
e9f53129 AM |
47 | bfd_elf_generic_reloc, "SPU_ADDR10", |
48 | FALSE, 0, 0x00ffc000, FALSE), | |
07d6d2b8 | 49 | HOWTO (R_SPU_ADDR16, 2, 2, 16, FALSE, 7, complain_overflow_bitfield, |
e9f53129 AM |
50 | bfd_elf_generic_reloc, "SPU_ADDR16", |
51 | FALSE, 0, 0x007fff80, FALSE), | |
52 | HOWTO (R_SPU_ADDR16_HI, 16, 2, 16, FALSE, 7, complain_overflow_bitfield, | |
53 | bfd_elf_generic_reloc, "SPU_ADDR16_HI", | |
54 | FALSE, 0, 0x007fff80, FALSE), | |
55 | HOWTO (R_SPU_ADDR16_LO, 0, 2, 16, FALSE, 7, complain_overflow_dont, | |
56 | bfd_elf_generic_reloc, "SPU_ADDR16_LO", | |
57 | FALSE, 0, 0x007fff80, FALSE), | |
07d6d2b8 | 58 | HOWTO (R_SPU_ADDR18, 0, 2, 18, FALSE, 7, complain_overflow_bitfield, |
e9f53129 AM |
59 | bfd_elf_generic_reloc, "SPU_ADDR18", |
60 | FALSE, 0, 0x01ffff80, FALSE), | |
07d6d2b8 | 61 | HOWTO (R_SPU_ADDR32, 0, 2, 32, FALSE, 0, complain_overflow_dont, |
e9f53129 AM |
62 | bfd_elf_generic_reloc, "SPU_ADDR32", |
63 | FALSE, 0, 0xffffffff, FALSE), | |
07d6d2b8 | 64 | HOWTO (R_SPU_REL16, 2, 2, 16, TRUE, 7, complain_overflow_bitfield, |
e9f53129 AM |
65 | bfd_elf_generic_reloc, "SPU_REL16", |
66 | FALSE, 0, 0x007fff80, TRUE), | |
07d6d2b8 | 67 | HOWTO (R_SPU_ADDR7, 0, 2, 7, FALSE, 14, complain_overflow_dont, |
e9f53129 AM |
68 | bfd_elf_generic_reloc, "SPU_ADDR7", |
69 | FALSE, 0, 0x001fc000, FALSE), | |
07d6d2b8 AM |
70 | HOWTO (R_SPU_REL9, 2, 2, 9, TRUE, 0, complain_overflow_signed, |
71 | spu_elf_rel9, "SPU_REL9", | |
e9f53129 | 72 | FALSE, 0, 0x0180007f, TRUE), |
07d6d2b8 AM |
73 | HOWTO (R_SPU_REL9I, 2, 2, 9, TRUE, 0, complain_overflow_signed, |
74 | spu_elf_rel9, "SPU_REL9I", | |
e9f53129 | 75 | FALSE, 0, 0x0000c07f, TRUE), |
07d6d2b8 | 76 | HOWTO (R_SPU_ADDR10I, 0, 2, 10, FALSE, 14, complain_overflow_signed, |
e9f53129 AM |
77 | bfd_elf_generic_reloc, "SPU_ADDR10I", |
78 | FALSE, 0, 0x00ffc000, FALSE), | |
07d6d2b8 | 79 | HOWTO (R_SPU_ADDR16I, 0, 2, 16, FALSE, 7, complain_overflow_signed, |
e9f53129 AM |
80 | bfd_elf_generic_reloc, "SPU_ADDR16I", |
81 | FALSE, 0, 0x007fff80, FALSE), | |
07d6d2b8 | 82 | HOWTO (R_SPU_REL32, 0, 2, 32, TRUE, 0, complain_overflow_dont, |
e9f53129 AM |
83 | bfd_elf_generic_reloc, "SPU_REL32", |
84 | FALSE, 0, 0xffffffff, TRUE), | |
07d6d2b8 | 85 | HOWTO (R_SPU_ADDR16X, 0, 2, 16, FALSE, 7, complain_overflow_bitfield, |
4f4416b5 AM |
86 | bfd_elf_generic_reloc, "SPU_ADDR16X", |
87 | FALSE, 0, 0x007fff80, FALSE), | |
07d6d2b8 | 88 | HOWTO (R_SPU_PPU32, 0, 2, 32, FALSE, 0, complain_overflow_dont, |
ece5ef60 AM |
89 | bfd_elf_generic_reloc, "SPU_PPU32", |
90 | FALSE, 0, 0xffffffff, FALSE), | |
07d6d2b8 | 91 | HOWTO (R_SPU_PPU64, 0, 4, 64, FALSE, 0, complain_overflow_dont, |
ece5ef60 AM |
92 | bfd_elf_generic_reloc, "SPU_PPU64", |
93 | FALSE, 0, -1, FALSE), | |
07d6d2b8 | 94 | HOWTO (R_SPU_ADD_PIC, 0, 0, 0, FALSE, 0, complain_overflow_dont, |
8fdcc58d TS |
95 | bfd_elf_generic_reloc, "SPU_ADD_PIC", |
96 | FALSE, 0, 0x00000000, FALSE), | |
e9f53129 AM |
97 | }; |
98 | ||
99 | static struct bfd_elf_special_section const spu_elf_special_sections[] = { | |
8374f9d4 | 100 | { "._ea", 4, 0, SHT_PROGBITS, SHF_WRITE }, |
e9f53129 AM |
101 | { ".toe", 4, 0, SHT_NOBITS, SHF_ALLOC }, |
102 | { NULL, 0, 0, 0, 0 } | |
103 | }; | |
104 | ||
105 | static enum elf_spu_reloc_type | |
106 | spu_elf_bfd_to_reloc_type (bfd_reloc_code_real_type code) | |
107 | { | |
108 | switch (code) | |
109 | { | |
110 | default: | |
0ba38529 AM |
111 | return (enum elf_spu_reloc_type) -1; |
112 | case BFD_RELOC_NONE: | |
e9f53129 AM |
113 | return R_SPU_NONE; |
114 | case BFD_RELOC_SPU_IMM10W: | |
115 | return R_SPU_ADDR10; | |
116 | case BFD_RELOC_SPU_IMM16W: | |
117 | return R_SPU_ADDR16; | |
118 | case BFD_RELOC_SPU_LO16: | |
119 | return R_SPU_ADDR16_LO; | |
120 | case BFD_RELOC_SPU_HI16: | |
121 | return R_SPU_ADDR16_HI; | |
122 | case BFD_RELOC_SPU_IMM18: | |
123 | return R_SPU_ADDR18; | |
124 | case BFD_RELOC_SPU_PCREL16: | |
125 | return R_SPU_REL16; | |
126 | case BFD_RELOC_SPU_IMM7: | |
127 | return R_SPU_ADDR7; | |
128 | case BFD_RELOC_SPU_IMM8: | |
129 | return R_SPU_NONE; | |
130 | case BFD_RELOC_SPU_PCREL9a: | |
131 | return R_SPU_REL9; | |
132 | case BFD_RELOC_SPU_PCREL9b: | |
133 | return R_SPU_REL9I; | |
134 | case BFD_RELOC_SPU_IMM10: | |
135 | return R_SPU_ADDR10I; | |
136 | case BFD_RELOC_SPU_IMM16: | |
137 | return R_SPU_ADDR16I; | |
138 | case BFD_RELOC_32: | |
139 | return R_SPU_ADDR32; | |
140 | case BFD_RELOC_32_PCREL: | |
141 | return R_SPU_REL32; | |
ece5ef60 AM |
142 | case BFD_RELOC_SPU_PPU32: |
143 | return R_SPU_PPU32; | |
144 | case BFD_RELOC_SPU_PPU64: | |
145 | return R_SPU_PPU64; | |
8fdcc58d TS |
146 | case BFD_RELOC_SPU_ADD_PIC: |
147 | return R_SPU_ADD_PIC; | |
e9f53129 AM |
148 | } |
149 | } | |
150 | ||
f3185997 | 151 | static bfd_boolean |
0aa13fee | 152 | spu_elf_info_to_howto (bfd *abfd, |
e9f53129 AM |
153 | arelent *cache_ptr, |
154 | Elf_Internal_Rela *dst) | |
155 | { | |
156 | enum elf_spu_reloc_type r_type; | |
157 | ||
158 | r_type = (enum elf_spu_reloc_type) ELF32_R_TYPE (dst->r_info); | |
cd21f5da NC |
159 | /* PR 17512: file: 90c2a92e. */ |
160 | if (r_type >= R_SPU_max) | |
161 | { | |
695344c0 | 162 | /* xgettext:c-format */ |
0aa13fee | 163 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 164 | abfd, r_type); |
cd21f5da | 165 | bfd_set_error (bfd_error_bad_value); |
f3185997 | 166 | return FALSE; |
cd21f5da | 167 | } |
e9f53129 | 168 | cache_ptr->howto = &elf_howto_table[(int) r_type]; |
f3185997 | 169 | return TRUE; |
e9f53129 AM |
170 | } |
171 | ||
172 | static reloc_howto_type * | |
173 | spu_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
174 | bfd_reloc_code_real_type code) | |
175 | { | |
b16f296e AM |
176 | enum elf_spu_reloc_type r_type = spu_elf_bfd_to_reloc_type (code); |
177 | ||
0ba38529 | 178 | if (r_type == (enum elf_spu_reloc_type) -1) |
b16f296e AM |
179 | return NULL; |
180 | ||
181 | return elf_howto_table + r_type; | |
e9f53129 AM |
182 | } |
183 | ||
157090f7 AM |
184 | static reloc_howto_type * |
185 | spu_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
186 | const char *r_name) | |
187 | { | |
188 | unsigned int i; | |
189 | ||
190 | for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) | |
191 | if (elf_howto_table[i].name != NULL | |
192 | && strcasecmp (elf_howto_table[i].name, r_name) == 0) | |
193 | return &elf_howto_table[i]; | |
194 | ||
195 | return NULL; | |
196 | } | |
197 | ||
e9f53129 AM |
198 | /* Apply R_SPU_REL9 and R_SPU_REL9I relocs. */ |
199 | ||
200 | static bfd_reloc_status_type | |
201 | spu_elf_rel9 (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
202 | void *data, asection *input_section, | |
203 | bfd *output_bfd, char **error_message) | |
204 | { | |
205 | bfd_size_type octets; | |
206 | bfd_vma val; | |
207 | long insn; | |
208 | ||
209 | /* If this is a relocatable link (output_bfd test tells us), just | |
210 | call the generic function. Any adjustment will be done at final | |
211 | link time. */ | |
212 | if (output_bfd != NULL) | |
213 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
214 | input_section, output_bfd, error_message); | |
215 | ||
216 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
217 | return bfd_reloc_outofrange; | |
bb294208 | 218 | octets = reloc_entry->address * OCTETS_PER_BYTE (abfd, input_section); |
e9f53129 AM |
219 | |
220 | /* Get symbol value. */ | |
221 | val = 0; | |
222 | if (!bfd_is_com_section (symbol->section)) | |
223 | val = symbol->value; | |
224 | if (symbol->section->output_section) | |
225 | val += symbol->section->output_section->vma; | |
226 | ||
227 | val += reloc_entry->addend; | |
228 | ||
229 | /* Make it pc-relative. */ | |
230 | val -= input_section->output_section->vma + input_section->output_offset; | |
231 | ||
232 | val >>= 2; | |
233 | if (val + 256 >= 512) | |
234 | return bfd_reloc_overflow; | |
235 | ||
236 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
237 | ||
238 | /* Move two high bits of value to REL9I and REL9 position. | |
239 | The mask will take care of selecting the right field. */ | |
240 | val = (val & 0x7f) | ((val & 0x180) << 7) | ((val & 0x180) << 16); | |
241 | insn &= ~reloc_entry->howto->dst_mask; | |
242 | insn |= val & reloc_entry->howto->dst_mask; | |
243 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
244 | return bfd_reloc_ok; | |
245 | } | |
246 | ||
247 | static bfd_boolean | |
248 | spu_elf_new_section_hook (bfd *abfd, asection *sec) | |
249 | { | |
250 | if (!sec->used_by_bfd) | |
251 | { | |
252 | struct _spu_elf_section_data *sdata; | |
253 | ||
254 | sdata = bfd_zalloc (abfd, sizeof (*sdata)); | |
255 | if (sdata == NULL) | |
256 | return FALSE; | |
257 | sec->used_by_bfd = sdata; | |
258 | } | |
259 | ||
260 | return _bfd_elf_new_section_hook (abfd, sec); | |
261 | } | |
262 | ||
124b52c6 AM |
263 | /* Set up overlay info for executables. */ |
264 | ||
265 | static bfd_boolean | |
266 | spu_elf_object_p (bfd *abfd) | |
267 | { | |
268 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) | |
269 | { | |
270 | unsigned int i, num_ovl, num_buf; | |
271 | Elf_Internal_Phdr *phdr = elf_tdata (abfd)->phdr; | |
272 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); | |
273 | Elf_Internal_Phdr *last_phdr = NULL; | |
274 | ||
275 | for (num_buf = 0, num_ovl = 0, i = 0; i < ehdr->e_phnum; i++, phdr++) | |
276 | if (phdr->p_type == PT_LOAD && (phdr->p_flags & PF_OVERLAY) != 0) | |
277 | { | |
278 | unsigned int j; | |
279 | ||
280 | ++num_ovl; | |
281 | if (last_phdr == NULL | |
282 | || ((last_phdr->p_vaddr ^ phdr->p_vaddr) & 0x3ffff) != 0) | |
283 | ++num_buf; | |
284 | last_phdr = phdr; | |
285 | for (j = 1; j < elf_numsections (abfd); j++) | |
286 | { | |
287 | Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[j]; | |
288 | ||
9a83a553 AM |
289 | if (ELF_SECTION_SIZE (shdr, phdr) != 0 |
290 | && ELF_SECTION_IN_SEGMENT (shdr, phdr)) | |
124b52c6 AM |
291 | { |
292 | asection *sec = shdr->bfd_section; | |
293 | spu_elf_section_data (sec)->u.o.ovl_index = num_ovl; | |
294 | spu_elf_section_data (sec)->u.o.ovl_buf = num_buf; | |
295 | } | |
296 | } | |
297 | } | |
298 | } | |
299 | return TRUE; | |
300 | } | |
301 | ||
e9f53129 AM |
302 | /* Specially mark defined symbols named _EAR_* with BSF_KEEP so that |
303 | strip --strip-unneeded will not remove them. */ | |
304 | ||
305 | static void | |
306 | spu_elf_backend_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym) | |
307 | { | |
308 | if (sym->name != NULL | |
309 | && sym->section != bfd_abs_section_ptr | |
310 | && strncmp (sym->name, "_EAR_", 5) == 0) | |
311 | sym->flags |= BSF_KEEP; | |
312 | } | |
313 | ||
314 | /* SPU ELF linker hash table. */ | |
315 | ||
316 | struct spu_link_hash_table | |
317 | { | |
318 | struct elf_link_hash_table elf; | |
319 | ||
64615358 AM |
320 | struct spu_elf_params *params; |
321 | ||
e9f53129 | 322 | /* Shortcuts to overlay sections. */ |
e9f53129 | 323 | asection *ovtab; |
cd4a7468 | 324 | asection *init; |
47f6dab9 AM |
325 | asection *toe; |
326 | asection **ovl_sec; | |
327 | ||
328 | /* Count of stubs in each overlay section. */ | |
329 | unsigned int *stub_count; | |
330 | ||
331 | /* The stub section for each overlay section. */ | |
332 | asection **stub_sec; | |
e9f53129 | 333 | |
a7e11ee1 | 334 | struct elf_link_hash_entry *ovly_entry[2]; |
e9f53129 | 335 | |
e9f53129 AM |
336 | /* Number of overlay buffers. */ |
337 | unsigned int num_buf; | |
338 | ||
339 | /* Total number of overlays. */ | |
340 | unsigned int num_overlays; | |
341 | ||
cd4a7468 AM |
342 | /* For soft icache. */ |
343 | unsigned int line_size_log2; | |
344 | unsigned int num_lines_log2; | |
97fc8d84 | 345 | unsigned int fromelem_size_log2; |
cd4a7468 | 346 | |
9dcc4794 AM |
347 | /* How much memory we have. */ |
348 | unsigned int local_store; | |
2a516af6 | 349 | |
9dcc4794 AM |
350 | /* Count of overlay stubs needed in non-overlay area. */ |
351 | unsigned int non_ovly_stub; | |
352 | ||
9cc305ec TS |
353 | /* Pointer to the fixup section */ |
354 | asection *sfixup; | |
355 | ||
e9f53129 | 356 | /* Set on error. */ |
47f6dab9 | 357 | unsigned int stub_err : 1; |
e9f53129 AM |
358 | }; |
359 | ||
47f6dab9 | 360 | /* Hijack the generic got fields for overlay stub accounting. */ |
e9f53129 | 361 | |
47f6dab9 | 362 | struct got_entry |
e9f53129 | 363 | { |
47f6dab9 AM |
364 | struct got_entry *next; |
365 | unsigned int ovl; | |
cd4a7468 AM |
366 | union { |
367 | bfd_vma addend; | |
368 | bfd_vma br_addr; | |
369 | }; | |
47f6dab9 | 370 | bfd_vma stub_addr; |
e9f53129 AM |
371 | }; |
372 | ||
47f6dab9 | 373 | #define spu_hash_table(p) \ |
0f55320b AM |
374 | ((is_elf_hash_table ((p)->hash) \ |
375 | && elf_hash_table_id (elf_hash_table (p)) == SPU_ELF_DATA) \ | |
376 | ? (struct spu_link_hash_table *) (p)->hash : NULL) | |
e9f53129 | 377 | |
64615358 AM |
378 | struct call_info |
379 | { | |
380 | struct function_info *fun; | |
381 | struct call_info *next; | |
382 | unsigned int count; | |
383 | unsigned int max_depth; | |
384 | unsigned int is_tail : 1; | |
385 | unsigned int is_pasted : 1; | |
5ebe2858 | 386 | unsigned int broken_cycle : 1; |
cd4a7468 | 387 | unsigned int priority : 13; |
64615358 AM |
388 | }; |
389 | ||
390 | struct function_info | |
391 | { | |
392 | /* List of functions called. Also branches to hot/cold part of | |
393 | function. */ | |
394 | struct call_info *call_list; | |
395 | /* For hot/cold part of function, point to owner. */ | |
396 | struct function_info *start; | |
397 | /* Symbol at start of function. */ | |
398 | union { | |
399 | Elf_Internal_Sym *sym; | |
400 | struct elf_link_hash_entry *h; | |
401 | } u; | |
402 | /* Function section. */ | |
403 | asection *sec; | |
404 | asection *rodata; | |
405 | /* Where last called from, and number of sections called from. */ | |
406 | asection *last_caller; | |
407 | unsigned int call_count; | |
408 | /* Address range of (this part of) function. */ | |
409 | bfd_vma lo, hi; | |
cd4a7468 AM |
410 | /* Offset where we found a store of lr, or -1 if none found. */ |
411 | bfd_vma lr_store; | |
412 | /* Offset where we found the stack adjustment insn. */ | |
413 | bfd_vma sp_adjust; | |
64615358 AM |
414 | /* Stack usage. */ |
415 | int stack; | |
416 | /* Distance from root of call tree. Tail and hot/cold branches | |
417 | count as one deeper. We aren't counting stack frames here. */ | |
418 | unsigned int depth; | |
419 | /* Set if global symbol. */ | |
420 | unsigned int global : 1; | |
421 | /* Set if known to be start of function (as distinct from a hunk | |
422 | in hot/cold section. */ | |
423 | unsigned int is_func : 1; | |
424 | /* Set if not a root node. */ | |
425 | unsigned int non_root : 1; | |
426 | /* Flags used during call tree traversal. It's cheaper to replicate | |
427 | the visit flags than have one which needs clearing after a traversal. */ | |
428 | unsigned int visit1 : 1; | |
429 | unsigned int visit2 : 1; | |
430 | unsigned int marking : 1; | |
431 | unsigned int visit3 : 1; | |
432 | unsigned int visit4 : 1; | |
433 | unsigned int visit5 : 1; | |
434 | unsigned int visit6 : 1; | |
435 | unsigned int visit7 : 1; | |
436 | }; | |
437 | ||
438 | struct spu_elf_stack_info | |
439 | { | |
440 | int num_fun; | |
441 | int max_fun; | |
442 | /* Variable size array describing functions, one per contiguous | |
443 | address range belonging to a function. */ | |
444 | struct function_info fun[1]; | |
445 | }; | |
446 | ||
cd4a7468 AM |
447 | static struct function_info *find_function (asection *, bfd_vma, |
448 | struct bfd_link_info *); | |
449 | ||
e9f53129 AM |
450 | /* Create a spu ELF linker hash table. */ |
451 | ||
452 | static struct bfd_link_hash_table * | |
453 | spu_elf_link_hash_table_create (bfd *abfd) | |
454 | { | |
455 | struct spu_link_hash_table *htab; | |
456 | ||
7bf52ea2 | 457 | htab = bfd_zmalloc (sizeof (*htab)); |
e9f53129 AM |
458 | if (htab == NULL) |
459 | return NULL; | |
460 | ||
461 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, | |
462 | _bfd_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
463 | sizeof (struct elf_link_hash_entry), |
464 | SPU_ELF_DATA)) | |
e9f53129 AM |
465 | { |
466 | free (htab); | |
467 | return NULL; | |
468 | } | |
469 | ||
47f6dab9 AM |
470 | htab->elf.init_got_refcount.refcount = 0; |
471 | htab->elf.init_got_refcount.glist = NULL; | |
472 | htab->elf.init_got_offset.offset = 0; | |
473 | htab->elf.init_got_offset.glist = NULL; | |
e9f53129 AM |
474 | return &htab->elf.root; |
475 | } | |
476 | ||
64615358 AM |
477 | void |
478 | spu_elf_setup (struct bfd_link_info *info, struct spu_elf_params *params) | |
479 | { | |
97fc8d84 UW |
480 | bfd_vma max_branch_log2; |
481 | ||
64615358 AM |
482 | struct spu_link_hash_table *htab = spu_hash_table (info); |
483 | htab->params = params; | |
cd4a7468 AM |
484 | htab->line_size_log2 = bfd_log2 (htab->params->line_size); |
485 | htab->num_lines_log2 = bfd_log2 (htab->params->num_lines); | |
97fc8d84 UW |
486 | |
487 | /* For the software i-cache, we provide a "from" list whose size | |
488 | is a power-of-two number of quadwords, big enough to hold one | |
489 | byte per outgoing branch. Compute this number here. */ | |
490 | max_branch_log2 = bfd_log2 (htab->params->max_branch); | |
491 | htab->fromelem_size_log2 = max_branch_log2 > 4 ? max_branch_log2 - 4 : 0; | |
64615358 AM |
492 | } |
493 | ||
e9f53129 AM |
494 | /* Find the symbol for the given R_SYMNDX in IBFD and set *HP and *SYMP |
495 | to (hash, NULL) for global symbols, and (NULL, sym) for locals. Set | |
496 | *SYMSECP to the symbol's section. *LOCSYMSP caches local syms. */ | |
497 | ||
498 | static bfd_boolean | |
499 | get_sym_h (struct elf_link_hash_entry **hp, | |
500 | Elf_Internal_Sym **symp, | |
501 | asection **symsecp, | |
502 | Elf_Internal_Sym **locsymsp, | |
503 | unsigned long r_symndx, | |
504 | bfd *ibfd) | |
505 | { | |
506 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
507 | ||
508 | if (r_symndx >= symtab_hdr->sh_info) | |
509 | { | |
510 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
511 | struct elf_link_hash_entry *h; | |
512 | ||
513 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
514 | while (h->root.type == bfd_link_hash_indirect | |
515 | || h->root.type == bfd_link_hash_warning) | |
516 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
517 | ||
518 | if (hp != NULL) | |
519 | *hp = h; | |
520 | ||
521 | if (symp != NULL) | |
522 | *symp = NULL; | |
523 | ||
524 | if (symsecp != NULL) | |
525 | { | |
526 | asection *symsec = NULL; | |
527 | if (h->root.type == bfd_link_hash_defined | |
528 | || h->root.type == bfd_link_hash_defweak) | |
529 | symsec = h->root.u.def.section; | |
530 | *symsecp = symsec; | |
531 | } | |
532 | } | |
533 | else | |
534 | { | |
535 | Elf_Internal_Sym *sym; | |
536 | Elf_Internal_Sym *locsyms = *locsymsp; | |
537 | ||
538 | if (locsyms == NULL) | |
539 | { | |
540 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
541 | if (locsyms == NULL) | |
1f27ab8d AM |
542 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, |
543 | symtab_hdr->sh_info, | |
544 | 0, NULL, NULL, NULL); | |
e9f53129 AM |
545 | if (locsyms == NULL) |
546 | return FALSE; | |
547 | *locsymsp = locsyms; | |
548 | } | |
549 | sym = locsyms + r_symndx; | |
550 | ||
551 | if (hp != NULL) | |
552 | *hp = NULL; | |
553 | ||
554 | if (symp != NULL) | |
555 | *symp = sym; | |
556 | ||
557 | if (symsecp != NULL) | |
cb33740c | 558 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
e9f53129 | 559 | } |
49fa1e15 | 560 | |
e9f53129 AM |
561 | return TRUE; |
562 | } | |
563 | ||
e9f53129 AM |
564 | /* Create the note section if not already present. This is done early so |
565 | that the linker maps the sections to the right place in the output. */ | |
566 | ||
567 | bfd_boolean | |
64615358 | 568 | spu_elf_create_sections (struct bfd_link_info *info) |
e9f53129 | 569 | { |
9cc305ec | 570 | struct spu_link_hash_table *htab = spu_hash_table (info); |
e9f53129 AM |
571 | bfd *ibfd; |
572 | ||
c72f2fb2 | 573 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e9f53129 AM |
574 | if (bfd_get_section_by_name (ibfd, SPU_PTNOTE_SPUNAME) != NULL) |
575 | break; | |
576 | ||
577 | if (ibfd == NULL) | |
578 | { | |
579 | /* Make SPU_PTNOTE_SPUNAME section. */ | |
580 | asection *s; | |
581 | size_t name_len; | |
582 | size_t size; | |
583 | bfd_byte *data; | |
584 | flagword flags; | |
585 | ||
586 | ibfd = info->input_bfds; | |
d1c86cff AM |
587 | /* This should really be SEC_LINKER_CREATED, but then we'd need |
588 | to write out the section ourselves. */ | |
e9f53129 AM |
589 | flags = SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
590 | s = bfd_make_section_anyway_with_flags (ibfd, SPU_PTNOTE_SPUNAME, flags); | |
591 | if (s == NULL | |
fd361982 | 592 | || !bfd_set_section_alignment (s, 4)) |
e9f53129 | 593 | return FALSE; |
d1c86cff AM |
594 | /* Because we didn't set SEC_LINKER_CREATED we need to set the |
595 | proper section type. */ | |
596 | elf_section_type (s) = SHT_NOTE; | |
e9f53129 | 597 | |
c65be8d7 | 598 | name_len = strlen (bfd_get_filename (info->output_bfd)) + 1; |
e9f53129 AM |
599 | size = 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4); |
600 | size += (name_len + 3) & -4; | |
601 | ||
fd361982 | 602 | if (!bfd_set_section_size (s, size)) |
e9f53129 AM |
603 | return FALSE; |
604 | ||
605 | data = bfd_zalloc (ibfd, size); | |
606 | if (data == NULL) | |
607 | return FALSE; | |
608 | ||
609 | bfd_put_32 (ibfd, sizeof (SPU_PLUGIN_NAME), data + 0); | |
610 | bfd_put_32 (ibfd, name_len, data + 4); | |
611 | bfd_put_32 (ibfd, 1, data + 8); | |
612 | memcpy (data + 12, SPU_PLUGIN_NAME, sizeof (SPU_PLUGIN_NAME)); | |
613 | memcpy (data + 12 + ((sizeof (SPU_PLUGIN_NAME) + 3) & -4), | |
c65be8d7 | 614 | bfd_get_filename (info->output_bfd), name_len); |
e9f53129 AM |
615 | s->contents = data; |
616 | } | |
617 | ||
9cc305ec TS |
618 | if (htab->params->emit_fixups) |
619 | { | |
620 | asection *s; | |
621 | flagword flags; | |
29c70241 AM |
622 | |
623 | if (htab->elf.dynobj == NULL) | |
624 | htab->elf.dynobj = ibfd; | |
625 | ibfd = htab->elf.dynobj; | |
626 | flags = (SEC_LOAD | SEC_ALLOC | SEC_READONLY | SEC_HAS_CONTENTS | |
627 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
9cc305ec | 628 | s = bfd_make_section_anyway_with_flags (ibfd, ".fixup", flags); |
fd361982 | 629 | if (s == NULL || !bfd_set_section_alignment (s, 2)) |
9cc305ec TS |
630 | return FALSE; |
631 | htab->sfixup = s; | |
632 | } | |
633 | ||
e9f53129 AM |
634 | return TRUE; |
635 | } | |
636 | ||
e9f53129 AM |
637 | /* qsort predicate to sort sections by vma. */ |
638 | ||
639 | static int | |
640 | sort_sections (const void *a, const void *b) | |
641 | { | |
642 | const asection *const *s1 = a; | |
643 | const asection *const *s2 = b; | |
644 | bfd_signed_vma delta = (*s1)->vma - (*s2)->vma; | |
645 | ||
646 | if (delta != 0) | |
647 | return delta < 0 ? -1 : 1; | |
648 | ||
649 | return (*s1)->index - (*s2)->index; | |
650 | } | |
651 | ||
ad2adbc8 AM |
652 | /* Identify overlays in the output bfd, and number them. |
653 | Returns 0 on error, 1 if no overlays, 2 if overlays. */ | |
e9f53129 | 654 | |
ad2adbc8 | 655 | int |
c65be8d7 | 656 | spu_elf_find_overlays (struct bfd_link_info *info) |
e9f53129 AM |
657 | { |
658 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
659 | asection **alloc_sec; | |
660 | unsigned int i, n, ovl_index, num_buf; | |
661 | asection *s; | |
662 | bfd_vma ovl_end; | |
ad2adbc8 AM |
663 | static const char *const entry_names[2][2] = { |
664 | { "__ovly_load", "__icache_br_handler" }, | |
665 | { "__ovly_return", "__icache_call_handler" } | |
666 | }; | |
e9f53129 | 667 | |
c65be8d7 | 668 | if (info->output_bfd->section_count < 2) |
ad2adbc8 | 669 | return 1; |
e9f53129 | 670 | |
c65be8d7 AM |
671 | alloc_sec |
672 | = bfd_malloc (info->output_bfd->section_count * sizeof (*alloc_sec)); | |
e9f53129 | 673 | if (alloc_sec == NULL) |
ad2adbc8 | 674 | return 0; |
e9f53129 AM |
675 | |
676 | /* Pick out all the alloced sections. */ | |
c65be8d7 | 677 | for (n = 0, s = info->output_bfd->sections; s != NULL; s = s->next) |
e9f53129 AM |
678 | if ((s->flags & SEC_ALLOC) != 0 |
679 | && (s->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != SEC_THREAD_LOCAL | |
680 | && s->size != 0) | |
681 | alloc_sec[n++] = s; | |
682 | ||
683 | if (n == 0) | |
684 | { | |
685 | free (alloc_sec); | |
ad2adbc8 | 686 | return 1; |
e9f53129 AM |
687 | } |
688 | ||
689 | /* Sort them by vma. */ | |
690 | qsort (alloc_sec, n, sizeof (*alloc_sec), sort_sections); | |
691 | ||
e9f53129 | 692 | ovl_end = alloc_sec[0]->vma + alloc_sec[0]->size; |
cd4a7468 | 693 | if (htab->params->ovly_flavour == ovly_soft_icache) |
e9f53129 | 694 | { |
64028ad7 UW |
695 | unsigned int prev_buf = 0, set_id = 0; |
696 | ||
cd4a7468 AM |
697 | /* Look for an overlapping vma to find the first overlay section. */ |
698 | bfd_vma vma_start = 0; | |
cd4a7468 AM |
699 | |
700 | for (i = 1; i < n; i++) | |
e9f53129 | 701 | { |
cd4a7468 AM |
702 | s = alloc_sec[i]; |
703 | if (s->vma < ovl_end) | |
704 | { | |
705 | asection *s0 = alloc_sec[i - 1]; | |
706 | vma_start = s0->vma; | |
cd4a7468 AM |
707 | ovl_end = (s0->vma |
708 | + ((bfd_vma) 1 | |
709 | << (htab->num_lines_log2 + htab->line_size_log2))); | |
710 | --i; | |
711 | break; | |
712 | } | |
713 | else | |
714 | ovl_end = s->vma + s->size; | |
715 | } | |
e9f53129 | 716 | |
cd4a7468 AM |
717 | /* Now find any sections within the cache area. */ |
718 | for (ovl_index = 0, num_buf = 0; i < n; i++) | |
719 | { | |
720 | s = alloc_sec[i]; | |
721 | if (s->vma >= ovl_end) | |
722 | break; | |
723 | ||
724 | /* A section in an overlay area called .ovl.init is not | |
725 | an overlay, in the sense that it might be loaded in | |
726 | by the overlay manager, but rather the initial | |
727 | section contents for the overlay buffer. */ | |
728 | if (strncmp (s->name, ".ovl.init", 9) != 0) | |
e9f53129 | 729 | { |
cd4a7468 | 730 | num_buf = ((s->vma - vma_start) >> htab->line_size_log2) + 1; |
64028ad7 UW |
731 | set_id = (num_buf == prev_buf)? set_id + 1 : 0; |
732 | prev_buf = num_buf; | |
733 | ||
734 | if ((s->vma - vma_start) & (htab->params->line_size - 1)) | |
cd4a7468 | 735 | { |
871b3ab2 | 736 | info->callbacks->einfo (_("%X%P: overlay section %pA " |
38f14ab8 | 737 | "does not start on a cache line\n"), |
cd4a7468 | 738 | s); |
3209bffa | 739 | bfd_set_error (bfd_error_bad_value); |
ad2adbc8 | 740 | return 0; |
cd4a7468 AM |
741 | } |
742 | else if (s->size > htab->params->line_size) | |
743 | { | |
871b3ab2 | 744 | info->callbacks->einfo (_("%X%P: overlay section %pA " |
38f14ab8 | 745 | "is larger than a cache line\n"), |
cd4a7468 | 746 | s); |
3209bffa | 747 | bfd_set_error (bfd_error_bad_value); |
ad2adbc8 | 748 | return 0; |
cd4a7468 AM |
749 | } |
750 | ||
751 | alloc_sec[ovl_index++] = s; | |
752 | spu_elf_section_data (s)->u.o.ovl_index | |
64028ad7 | 753 | = (set_id << htab->num_lines_log2) + num_buf; |
cd4a7468 | 754 | spu_elf_section_data (s)->u.o.ovl_buf = num_buf; |
e9f53129 | 755 | } |
cd4a7468 AM |
756 | } |
757 | ||
758 | /* Ensure there are no more overlay sections. */ | |
759 | for ( ; i < n; i++) | |
760 | { | |
761 | s = alloc_sec[i]; | |
762 | if (s->vma < ovl_end) | |
e9f53129 | 763 | { |
871b3ab2 | 764 | info->callbacks->einfo (_("%X%P: overlay section %pA " |
38f14ab8 | 765 | "is not in cache area\n"), |
cd4a7468 | 766 | alloc_sec[i-1]); |
3209bffa | 767 | bfd_set_error (bfd_error_bad_value); |
ad2adbc8 | 768 | return 0; |
e9f53129 | 769 | } |
cd4a7468 AM |
770 | else |
771 | ovl_end = s->vma + s->size; | |
772 | } | |
773 | } | |
774 | else | |
775 | { | |
776 | /* Look for overlapping vmas. Any with overlap must be overlays. | |
777 | Count them. Also count the number of overlay regions. */ | |
778 | for (ovl_index = 0, num_buf = 0, i = 1; i < n; i++) | |
779 | { | |
780 | s = alloc_sec[i]; | |
781 | if (s->vma < ovl_end) | |
782 | { | |
783 | asection *s0 = alloc_sec[i - 1]; | |
784 | ||
785 | if (spu_elf_section_data (s0)->u.o.ovl_index == 0) | |
786 | { | |
787 | ++num_buf; | |
788 | if (strncmp (s0->name, ".ovl.init", 9) != 0) | |
789 | { | |
790 | alloc_sec[ovl_index] = s0; | |
791 | spu_elf_section_data (s0)->u.o.ovl_index = ++ovl_index; | |
792 | spu_elf_section_data (s0)->u.o.ovl_buf = num_buf; | |
793 | } | |
794 | else | |
795 | ovl_end = s->vma + s->size; | |
796 | } | |
797 | if (strncmp (s->name, ".ovl.init", 9) != 0) | |
798 | { | |
799 | alloc_sec[ovl_index] = s; | |
800 | spu_elf_section_data (s)->u.o.ovl_index = ++ovl_index; | |
801 | spu_elf_section_data (s)->u.o.ovl_buf = num_buf; | |
802 | if (s0->vma != s->vma) | |
803 | { | |
695344c0 | 804 | /* xgettext:c-format */ |
871b3ab2 AM |
805 | info->callbacks->einfo (_("%X%P: overlay sections %pA " |
806 | "and %pA do not start at the " | |
38f14ab8 | 807 | "same address\n"), |
cd4a7468 | 808 | s0, s); |
3209bffa | 809 | bfd_set_error (bfd_error_bad_value); |
ad2adbc8 | 810 | return 0; |
cd4a7468 AM |
811 | } |
812 | if (ovl_end < s->vma + s->size) | |
813 | ovl_end = s->vma + s->size; | |
814 | } | |
815 | } | |
816 | else | |
47f6dab9 | 817 | ovl_end = s->vma + s->size; |
e9f53129 | 818 | } |
e9f53129 AM |
819 | } |
820 | ||
821 | htab->num_overlays = ovl_index; | |
822 | htab->num_buf = num_buf; | |
47f6dab9 | 823 | htab->ovl_sec = alloc_sec; |
ad2adbc8 AM |
824 | |
825 | if (ovl_index == 0) | |
826 | return 1; | |
827 | ||
828 | for (i = 0; i < 2; i++) | |
829 | { | |
830 | const char *name; | |
831 | struct elf_link_hash_entry *h; | |
832 | ||
833 | name = entry_names[i][htab->params->ovly_flavour]; | |
834 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
835 | if (h == NULL) | |
836 | return 0; | |
837 | ||
838 | if (h->root.type == bfd_link_hash_new) | |
839 | { | |
840 | h->root.type = bfd_link_hash_undefined; | |
841 | h->ref_regular = 1; | |
842 | h->ref_regular_nonweak = 1; | |
843 | h->non_elf = 0; | |
844 | } | |
845 | htab->ovly_entry[i] = h; | |
846 | } | |
847 | ||
848 | return 2; | |
e9f53129 AM |
849 | } |
850 | ||
cd4a7468 AM |
851 | /* Non-zero to use bra in overlay stubs rather than br. */ |
852 | #define BRA_STUBS 0 | |
853 | ||
854 | #define BRA 0x30000000 | |
855 | #define BRASL 0x31000000 | |
47f6dab9 | 856 | #define BR 0x32000000 |
cd4a7468 | 857 | #define BRSL 0x33000000 |
e9f53129 | 858 | #define NOP 0x40200000 |
47f6dab9 AM |
859 | #define LNOP 0x00200000 |
860 | #define ILA 0x42000000 | |
e9f53129 | 861 | |
49fa1e15 | 862 | /* Return true for all relative and absolute branch instructions. |
e9f53129 AM |
863 | bra 00110000 0.. |
864 | brasl 00110001 0.. | |
865 | br 00110010 0.. | |
866 | brsl 00110011 0.. | |
867 | brz 00100000 0.. | |
868 | brnz 00100001 0.. | |
869 | brhz 00100010 0.. | |
49fa1e15 AM |
870 | brhnz 00100011 0.. */ |
871 | ||
872 | static bfd_boolean | |
873 | is_branch (const unsigned char *insn) | |
874 | { | |
875 | return (insn[0] & 0xec) == 0x20 && (insn[1] & 0x80) == 0; | |
876 | } | |
877 | ||
fad9eaf0 AM |
878 | /* Return true for all indirect branch instructions. |
879 | bi 00110101 000 | |
880 | bisl 00110101 001 | |
881 | iret 00110101 010 | |
882 | bisled 00110101 011 | |
883 | biz 00100101 000 | |
884 | binz 00100101 001 | |
885 | bihz 00100101 010 | |
886 | bihnz 00100101 011 */ | |
887 | ||
888 | static bfd_boolean | |
889 | is_indirect_branch (const unsigned char *insn) | |
890 | { | |
891 | return (insn[0] & 0xef) == 0x25 && (insn[1] & 0x80) == 0; | |
892 | } | |
893 | ||
49fa1e15 | 894 | /* Return true for branch hint instructions. |
e9f53129 AM |
895 | hbra 0001000.. |
896 | hbrr 0001001.. */ | |
897 | ||
898 | static bfd_boolean | |
49fa1e15 | 899 | is_hint (const unsigned char *insn) |
e9f53129 | 900 | { |
49fa1e15 | 901 | return (insn[0] & 0xfc) == 0x10; |
e9f53129 AM |
902 | } |
903 | ||
fdba2fcd | 904 | /* True if INPUT_SECTION might need overlay stubs. */ |
aa7a0635 AM |
905 | |
906 | static bfd_boolean | |
64615358 | 907 | maybe_needs_stubs (asection *input_section) |
fdba2fcd AM |
908 | { |
909 | /* No stubs for debug sections and suchlike. */ | |
910 | if ((input_section->flags & SEC_ALLOC) == 0) | |
911 | return FALSE; | |
912 | ||
913 | /* No stubs for link-once sections that will be discarded. */ | |
64615358 | 914 | if (input_section->output_section == bfd_abs_section_ptr) |
fdba2fcd AM |
915 | return FALSE; |
916 | ||
917 | /* Don't create stubs for .eh_frame references. */ | |
918 | if (strcmp (input_section->name, ".eh_frame") == 0) | |
919 | return FALSE; | |
920 | ||
921 | return TRUE; | |
922 | } | |
923 | ||
924 | enum _stub_type | |
925 | { | |
926 | no_stub, | |
cd4a7468 AM |
927 | call_ovl_stub, |
928 | br000_ovl_stub, | |
929 | br001_ovl_stub, | |
930 | br010_ovl_stub, | |
931 | br011_ovl_stub, | |
932 | br100_ovl_stub, | |
933 | br101_ovl_stub, | |
934 | br110_ovl_stub, | |
935 | br111_ovl_stub, | |
fdba2fcd AM |
936 | nonovl_stub, |
937 | stub_error | |
938 | }; | |
939 | ||
940 | /* Return non-zero if this reloc symbol should go via an overlay stub. | |
941 | Return 2 if the stub must be in non-overlay area. */ | |
942 | ||
943 | static enum _stub_type | |
944 | needs_ovl_stub (struct elf_link_hash_entry *h, | |
945 | Elf_Internal_Sym *sym, | |
aa7a0635 AM |
946 | asection *sym_sec, |
947 | asection *input_section, | |
fdba2fcd AM |
948 | Elf_Internal_Rela *irela, |
949 | bfd_byte *contents, | |
950 | struct bfd_link_info *info) | |
aa7a0635 | 951 | { |
fdba2fcd AM |
952 | struct spu_link_hash_table *htab = spu_hash_table (info); |
953 | enum elf_spu_reloc_type r_type; | |
954 | unsigned int sym_type; | |
cd4a7468 | 955 | bfd_boolean branch, hint, call; |
fdba2fcd | 956 | enum _stub_type ret = no_stub; |
cd4a7468 | 957 | bfd_byte insn[4]; |
aa7a0635 AM |
958 | |
959 | if (sym_sec == NULL | |
64615358 | 960 | || sym_sec->output_section == bfd_abs_section_ptr |
2c67c5f3 | 961 | || spu_elf_section_data (sym_sec->output_section) == NULL) |
fdba2fcd | 962 | return ret; |
aa7a0635 | 963 | |
fdba2fcd AM |
964 | if (h != NULL) |
965 | { | |
966 | /* Ensure no stubs for user supplied overlay manager syms. */ | |
ad2adbc8 | 967 | if (h == htab->ovly_entry[0] || h == htab->ovly_entry[1]) |
fdba2fcd AM |
968 | return ret; |
969 | ||
970 | /* setjmp always goes via an overlay stub, because then the return | |
971 | and hence the longjmp goes via __ovly_return. That magically | |
972 | makes setjmp/longjmp between overlays work. */ | |
973 | if (strncmp (h->root.root.string, "setjmp", 6) == 0 | |
974 | && (h->root.root.string[6] == '\0' || h->root.root.string[6] == '@')) | |
cd4a7468 | 975 | ret = call_ovl_stub; |
fdba2fcd | 976 | } |
aa7a0635 | 977 | |
fdba2fcd AM |
978 | if (h != NULL) |
979 | sym_type = h->type; | |
980 | else | |
981 | sym_type = ELF_ST_TYPE (sym->st_info); | |
982 | ||
983 | r_type = ELF32_R_TYPE (irela->r_info); | |
984 | branch = FALSE; | |
cd4a7468 AM |
985 | hint = FALSE; |
986 | call = FALSE; | |
fdba2fcd AM |
987 | if (r_type == R_SPU_REL16 || r_type == R_SPU_ADDR16) |
988 | { | |
fdba2fcd AM |
989 | if (contents == NULL) |
990 | { | |
991 | contents = insn; | |
992 | if (!bfd_get_section_contents (input_section->owner, | |
993 | input_section, | |
994 | contents, | |
995 | irela->r_offset, 4)) | |
996 | return stub_error; | |
997 | } | |
998 | else | |
999 | contents += irela->r_offset; | |
1000 | ||
cd4a7468 AM |
1001 | branch = is_branch (contents); |
1002 | hint = is_hint (contents); | |
1003 | if (branch || hint) | |
fdba2fcd | 1004 | { |
cd4a7468 AM |
1005 | call = (contents[0] & 0xfd) == 0x31; |
1006 | if (call | |
fdba2fcd | 1007 | && sym_type != STT_FUNC |
9dcc4794 | 1008 | && contents != insn) |
fdba2fcd AM |
1009 | { |
1010 | /* It's common for people to write assembly and forget | |
1011 | to give function symbols the right type. Handle | |
1012 | calls to such symbols, but warn so that (hopefully) | |
1013 | people will fix their code. We need the symbol | |
1014 | type to be correct to distinguish function pointer | |
1015 | initialisation from other pointer initialisations. */ | |
1016 | const char *sym_name; | |
1017 | ||
1018 | if (h != NULL) | |
1019 | sym_name = h->root.root.string; | |
1020 | else | |
1021 | { | |
1022 | Elf_Internal_Shdr *symtab_hdr; | |
1023 | symtab_hdr = &elf_tdata (input_section->owner)->symtab_hdr; | |
1024 | sym_name = bfd_elf_sym_name (input_section->owner, | |
1025 | symtab_hdr, | |
1026 | sym, | |
1027 | sym_sec); | |
1028 | } | |
4eca0228 | 1029 | _bfd_error_handler |
695344c0 | 1030 | /* xgettext:c-format */ |
871b3ab2 | 1031 | (_("warning: call to non-function symbol %s defined in %pB"), |
c08bb8dd | 1032 | sym_name, sym_sec->owner); |
fdba2fcd AM |
1033 | |
1034 | } | |
1035 | } | |
1036 | } | |
1037 | ||
cd4a7468 AM |
1038 | if ((!branch && htab->params->ovly_flavour == ovly_soft_icache) |
1039 | || (sym_type != STT_FUNC | |
1040 | && !(branch || hint) | |
1041 | && (sym_sec->flags & SEC_CODE) == 0)) | |
1042 | return no_stub; | |
1043 | ||
1044 | /* Usually, symbols in non-overlay sections don't need stubs. */ | |
1045 | if (spu_elf_section_data (sym_sec->output_section)->u.o.ovl_index == 0 | |
1046 | && !htab->params->non_overlay_stubs) | |
fdba2fcd | 1047 | return ret; |
aa7a0635 AM |
1048 | |
1049 | /* A reference from some other section to a symbol in an overlay | |
1050 | section needs a stub. */ | |
47f6dab9 AM |
1051 | if (spu_elf_section_data (sym_sec->output_section)->u.o.ovl_index |
1052 | != spu_elf_section_data (input_section->output_section)->u.o.ovl_index) | |
cd4a7468 | 1053 | { |
be3e406d UW |
1054 | unsigned int lrlive = 0; |
1055 | if (branch) | |
1056 | lrlive = (contents[1] & 0x70) >> 4; | |
1057 | ||
1058 | if (!lrlive && (call || sym_type == STT_FUNC)) | |
cd4a7468 AM |
1059 | ret = call_ovl_stub; |
1060 | else | |
be3e406d | 1061 | ret = br000_ovl_stub + lrlive; |
cd4a7468 | 1062 | } |
aa7a0635 AM |
1063 | |
1064 | /* If this insn isn't a branch then we are possibly taking the | |
cd4a7468 AM |
1065 | address of a function and passing it out somehow. Soft-icache code |
1066 | always generates inline code to do indirect branches. */ | |
1067 | if (!(branch || hint) | |
1068 | && sym_type == STT_FUNC | |
1069 | && htab->params->ovly_flavour != ovly_soft_icache) | |
1070 | ret = nonovl_stub; | |
1071 | ||
1072 | return ret; | |
aa7a0635 AM |
1073 | } |
1074 | ||
47f6dab9 AM |
1075 | static bfd_boolean |
1076 | count_stub (struct spu_link_hash_table *htab, | |
1077 | bfd *ibfd, | |
1078 | asection *isec, | |
fdba2fcd | 1079 | enum _stub_type stub_type, |
47f6dab9 AM |
1080 | struct elf_link_hash_entry *h, |
1081 | const Elf_Internal_Rela *irela) | |
1082 | { | |
1083 | unsigned int ovl = 0; | |
1084 | struct got_entry *g, **head; | |
4a628337 | 1085 | bfd_vma addend; |
47f6dab9 AM |
1086 | |
1087 | /* If this instruction is a branch or call, we need a stub | |
1088 | for it. One stub per function per overlay. | |
1089 | If it isn't a branch, then we are taking the address of | |
1090 | this function so need a stub in the non-overlay area | |
1091 | for it. One stub per function. */ | |
fdba2fcd | 1092 | if (stub_type != nonovl_stub) |
47f6dab9 AM |
1093 | ovl = spu_elf_section_data (isec->output_section)->u.o.ovl_index; |
1094 | ||
1095 | if (h != NULL) | |
1096 | head = &h->got.glist; | |
1097 | else | |
1098 | { | |
1099 | if (elf_local_got_ents (ibfd) == NULL) | |
1100 | { | |
1101 | bfd_size_type amt = (elf_tdata (ibfd)->symtab_hdr.sh_info | |
1102 | * sizeof (*elf_local_got_ents (ibfd))); | |
1103 | elf_local_got_ents (ibfd) = bfd_zmalloc (amt); | |
1104 | if (elf_local_got_ents (ibfd) == NULL) | |
1105 | return FALSE; | |
1106 | } | |
1107 | head = elf_local_got_ents (ibfd) + ELF32_R_SYM (irela->r_info); | |
1108 | } | |
1109 | ||
cd4a7468 AM |
1110 | if (htab->params->ovly_flavour == ovly_soft_icache) |
1111 | { | |
1112 | htab->stub_count[ovl] += 1; | |
1113 | return TRUE; | |
1114 | } | |
1115 | ||
4a628337 AM |
1116 | addend = 0; |
1117 | if (irela != NULL) | |
1118 | addend = irela->r_addend; | |
47f6dab9 AM |
1119 | |
1120 | if (ovl == 0) | |
1121 | { | |
1122 | struct got_entry *gnext; | |
1123 | ||
4a628337 AM |
1124 | for (g = *head; g != NULL; g = g->next) |
1125 | if (g->addend == addend && g->ovl == 0) | |
1126 | break; | |
1127 | ||
1128 | if (g == NULL) | |
47f6dab9 | 1129 | { |
4a628337 AM |
1130 | /* Need a new non-overlay area stub. Zap other stubs. */ |
1131 | for (g = *head; g != NULL; g = gnext) | |
1132 | { | |
1133 | gnext = g->next; | |
1134 | if (g->addend == addend) | |
1135 | { | |
1136 | htab->stub_count[g->ovl] -= 1; | |
1137 | free (g); | |
1138 | } | |
1139 | } | |
47f6dab9 AM |
1140 | } |
1141 | } | |
1142 | else | |
1143 | { | |
4a628337 AM |
1144 | for (g = *head; g != NULL; g = g->next) |
1145 | if (g->addend == addend && (g->ovl == ovl || g->ovl == 0)) | |
47f6dab9 AM |
1146 | break; |
1147 | } | |
1148 | ||
1149 | if (g == NULL) | |
1150 | { | |
1151 | g = bfd_malloc (sizeof *g); | |
1152 | if (g == NULL) | |
1153 | return FALSE; | |
1154 | g->ovl = ovl; | |
4a628337 | 1155 | g->addend = addend; |
47f6dab9 AM |
1156 | g->stub_addr = (bfd_vma) -1; |
1157 | g->next = *head; | |
1158 | *head = g; | |
1159 | ||
1160 | htab->stub_count[ovl] += 1; | |
1161 | } | |
1162 | ||
1163 | return TRUE; | |
1164 | } | |
1165 | ||
64615358 | 1166 | /* Support two sizes of overlay stubs, a slower more compact stub of two |
9aff4b7a | 1167 | instructions, and a faster stub of four instructions. |
a7e11ee1 AM |
1168 | Soft-icache stubs are four or eight words. */ |
1169 | ||
1170 | static unsigned int | |
1171 | ovl_stub_size (struct spu_elf_params *params) | |
1172 | { | |
1173 | return 16 << params->ovly_flavour >> params->compact_stub; | |
1174 | } | |
64615358 AM |
1175 | |
1176 | static unsigned int | |
a7e11ee1 | 1177 | ovl_stub_size_log2 (struct spu_elf_params *params) |
64615358 | 1178 | { |
a7e11ee1 | 1179 | return 4 + params->ovly_flavour - params->compact_stub; |
64615358 AM |
1180 | } |
1181 | ||
47f6dab9 AM |
1182 | /* Two instruction overlay stubs look like: |
1183 | ||
1184 | brsl $75,__ovly_load | |
1185 | .word target_ovl_and_address | |
1186 | ||
1187 | ovl_and_address is a word with the overlay number in the top 14 bits | |
1188 | and local store address in the bottom 18 bits. | |
1189 | ||
1190 | Four instruction overlay stubs look like: | |
1191 | ||
1192 | ila $78,ovl_number | |
1193 | lnop | |
1194 | ila $79,target_address | |
cd4a7468 AM |
1195 | br __ovly_load |
1196 | ||
1197 | Software icache stubs are: | |
1198 | ||
1199 | .word target_index | |
1200 | .word target_ia; | |
1201 | .word lrlive_branchlocalstoreaddr; | |
1202 | brasl $75,__icache_br_handler | |
1203 | .quad xor_pattern | |
1204 | */ | |
47f6dab9 AM |
1205 | |
1206 | static bfd_boolean | |
cd4a7468 | 1207 | build_stub (struct bfd_link_info *info, |
47f6dab9 AM |
1208 | bfd *ibfd, |
1209 | asection *isec, | |
fdba2fcd | 1210 | enum _stub_type stub_type, |
47f6dab9 AM |
1211 | struct elf_link_hash_entry *h, |
1212 | const Elf_Internal_Rela *irela, | |
1213 | bfd_vma dest, | |
1214 | asection *dest_sec) | |
1215 | { | |
cd4a7468 AM |
1216 | struct spu_link_hash_table *htab = spu_hash_table (info); |
1217 | unsigned int ovl, dest_ovl, set_id; | |
47f6dab9 AM |
1218 | struct got_entry *g, **head; |
1219 | asection *sec; | |
cd4a7468 AM |
1220 | bfd_vma addend, from, to, br_dest, patt; |
1221 | unsigned int lrlive; | |
47f6dab9 AM |
1222 | |
1223 | ovl = 0; | |
fdba2fcd | 1224 | if (stub_type != nonovl_stub) |
47f6dab9 AM |
1225 | ovl = spu_elf_section_data (isec->output_section)->u.o.ovl_index; |
1226 | ||
1227 | if (h != NULL) | |
1228 | head = &h->got.glist; | |
1229 | else | |
1230 | head = elf_local_got_ents (ibfd) + ELF32_R_SYM (irela->r_info); | |
1231 | ||
4a628337 AM |
1232 | addend = 0; |
1233 | if (irela != NULL) | |
1234 | addend = irela->r_addend; | |
47f6dab9 | 1235 | |
cd4a7468 AM |
1236 | if (htab->params->ovly_flavour == ovly_soft_icache) |
1237 | { | |
1238 | g = bfd_malloc (sizeof *g); | |
1239 | if (g == NULL) | |
1240 | return FALSE; | |
1241 | g->ovl = ovl; | |
1242 | g->br_addr = 0; | |
1243 | if (irela != NULL) | |
1244 | g->br_addr = (irela->r_offset | |
1245 | + isec->output_offset | |
1246 | + isec->output_section->vma); | |
1247 | g->next = *head; | |
1248 | *head = g; | |
1249 | } | |
1250 | else | |
1251 | { | |
1252 | for (g = *head; g != NULL; g = g->next) | |
1253 | if (g->addend == addend && (g->ovl == ovl || g->ovl == 0)) | |
1254 | break; | |
1255 | if (g == NULL) | |
1256 | abort (); | |
47f6dab9 | 1257 | |
cd4a7468 AM |
1258 | if (g->ovl == 0 && ovl != 0) |
1259 | return TRUE; | |
4a628337 | 1260 | |
cd4a7468 AM |
1261 | if (g->stub_addr != (bfd_vma) -1) |
1262 | return TRUE; | |
1263 | } | |
47f6dab9 AM |
1264 | |
1265 | sec = htab->stub_sec[ovl]; | |
1266 | dest += dest_sec->output_offset + dest_sec->output_section->vma; | |
1267 | from = sec->size + sec->output_offset + sec->output_section->vma; | |
1268 | g->stub_addr = from; | |
a7e11ee1 AM |
1269 | to = (htab->ovly_entry[0]->root.u.def.value |
1270 | + htab->ovly_entry[0]->root.u.def.section->output_offset | |
1271 | + htab->ovly_entry[0]->root.u.def.section->output_section->vma); | |
64615358 AM |
1272 | |
1273 | if (((dest | to | from) & 3) != 0) | |
47f6dab9 AM |
1274 | { |
1275 | htab->stub_err = 1; | |
1276 | return FALSE; | |
1277 | } | |
64615358 | 1278 | dest_ovl = spu_elf_section_data (dest_sec->output_section)->u.o.ovl_index; |
47f6dab9 | 1279 | |
a7e11ee1 AM |
1280 | if (htab->params->ovly_flavour == ovly_normal |
1281 | && !htab->params->compact_stub) | |
47f6dab9 | 1282 | { |
64615358 | 1283 | bfd_put_32 (sec->owner, ILA + ((dest_ovl << 7) & 0x01ffff80) + 78, |
47f6dab9 AM |
1284 | sec->contents + sec->size); |
1285 | bfd_put_32 (sec->owner, LNOP, | |
1286 | sec->contents + sec->size + 4); | |
1287 | bfd_put_32 (sec->owner, ILA + ((dest << 7) & 0x01ffff80) + 79, | |
1288 | sec->contents + sec->size + 8); | |
cd4a7468 AM |
1289 | if (!BRA_STUBS) |
1290 | bfd_put_32 (sec->owner, BR + (((to - (from + 12)) << 5) & 0x007fff80), | |
1291 | sec->contents + sec->size + 12); | |
1292 | else | |
1293 | bfd_put_32 (sec->owner, BRA + ((to << 5) & 0x007fff80), | |
1294 | sec->contents + sec->size + 12); | |
a7e11ee1 AM |
1295 | } |
1296 | else if (htab->params->ovly_flavour == ovly_normal | |
1297 | && htab->params->compact_stub) | |
1298 | { | |
cd4a7468 AM |
1299 | if (!BRA_STUBS) |
1300 | bfd_put_32 (sec->owner, BRSL + (((to - from) << 5) & 0x007fff80) + 75, | |
1301 | sec->contents + sec->size); | |
1302 | else | |
1303 | bfd_put_32 (sec->owner, BRASL + ((to << 5) & 0x007fff80) + 75, | |
1304 | sec->contents + sec->size); | |
64615358 | 1305 | bfd_put_32 (sec->owner, (dest & 0x3ffff) | (dest_ovl << 18), |
47f6dab9 | 1306 | sec->contents + sec->size + 4); |
a7e11ee1 | 1307 | } |
cdc83fba UW |
1308 | else if (htab->params->ovly_flavour == ovly_soft_icache |
1309 | && htab->params->compact_stub) | |
a7e11ee1 | 1310 | { |
cd4a7468 AM |
1311 | lrlive = 0; |
1312 | if (stub_type == nonovl_stub) | |
1313 | ; | |
1314 | else if (stub_type == call_ovl_stub) | |
1315 | /* A brsl makes lr live and *(*sp+16) is live. | |
1316 | Tail calls have the same liveness. */ | |
1317 | lrlive = 5; | |
1318 | else if (!htab->params->lrlive_analysis) | |
1319 | /* Assume stack frame and lr save. */ | |
1320 | lrlive = 1; | |
1321 | else if (irela != NULL) | |
1322 | { | |
1323 | /* Analyse branch instructions. */ | |
1324 | struct function_info *caller; | |
1325 | bfd_vma off; | |
1326 | ||
1327 | caller = find_function (isec, irela->r_offset, info); | |
1328 | if (caller->start == NULL) | |
1329 | off = irela->r_offset; | |
1330 | else | |
1331 | { | |
1332 | struct function_info *found = NULL; | |
1333 | ||
1334 | /* Find the earliest piece of this function that | |
1335 | has frame adjusting instructions. We might | |
1336 | see dynamic frame adjustment (eg. for alloca) | |
1337 | in some later piece, but functions using | |
1338 | alloca always set up a frame earlier. Frame | |
1339 | setup instructions are always in one piece. */ | |
1340 | if (caller->lr_store != (bfd_vma) -1 | |
1341 | || caller->sp_adjust != (bfd_vma) -1) | |
1342 | found = caller; | |
1343 | while (caller->start != NULL) | |
1344 | { | |
1345 | caller = caller->start; | |
1346 | if (caller->lr_store != (bfd_vma) -1 | |
1347 | || caller->sp_adjust != (bfd_vma) -1) | |
1348 | found = caller; | |
1349 | } | |
1350 | if (found != NULL) | |
1351 | caller = found; | |
1352 | off = (bfd_vma) -1; | |
1353 | } | |
1354 | ||
1355 | if (off > caller->sp_adjust) | |
1356 | { | |
1357 | if (off > caller->lr_store) | |
1358 | /* Only *(*sp+16) is live. */ | |
1359 | lrlive = 1; | |
1360 | else | |
1361 | /* If no lr save, then we must be in a | |
1362 | leaf function with a frame. | |
1363 | lr is still live. */ | |
1364 | lrlive = 4; | |
1365 | } | |
1366 | else if (off > caller->lr_store) | |
1367 | { | |
1368 | /* Between lr save and stack adjust. */ | |
1369 | lrlive = 3; | |
1370 | /* This should never happen since prologues won't | |
1371 | be split here. */ | |
1372 | BFD_ASSERT (0); | |
1373 | } | |
1374 | else | |
1375 | /* On entry to function. */ | |
1376 | lrlive = 5; | |
1377 | ||
1378 | if (stub_type != br000_ovl_stub | |
1379 | && lrlive != stub_type - br000_ovl_stub) | |
695344c0 | 1380 | /* xgettext:c-format */ |
871b3ab2 | 1381 | info->callbacks->einfo (_("%pA:0x%v lrlive .brinfo (%u) differs " |
cd4a7468 AM |
1382 | "from analysis (%u)\n"), |
1383 | isec, irela->r_offset, lrlive, | |
1384 | stub_type - br000_ovl_stub); | |
1385 | } | |
1386 | ||
1387 | /* If given lrlive info via .brinfo, use it. */ | |
1388 | if (stub_type > br000_ovl_stub) | |
1389 | lrlive = stub_type - br000_ovl_stub; | |
1390 | ||
a7e11ee1 AM |
1391 | if (ovl == 0) |
1392 | to = (htab->ovly_entry[1]->root.u.def.value | |
1393 | + htab->ovly_entry[1]->root.u.def.section->output_offset | |
1394 | + htab->ovly_entry[1]->root.u.def.section->output_section->vma); | |
1395 | ||
cdc83fba UW |
1396 | /* The branch that uses this stub goes to stub_addr + 4. We'll |
1397 | set up an xor pattern that can be used by the icache manager | |
1398 | to modify this branch to go directly to its destination. */ | |
1399 | g->stub_addr += 4; | |
1400 | br_dest = g->stub_addr; | |
1401 | if (irela == NULL) | |
a7e11ee1 | 1402 | { |
cdc83fba UW |
1403 | /* Except in the case of _SPUEAR_ stubs, the branch in |
1404 | question is the one in the stub itself. */ | |
1405 | BFD_ASSERT (stub_type == nonovl_stub); | |
1406 | g->br_addr = g->stub_addr; | |
1407 | br_dest = to; | |
a7e11ee1 | 1408 | } |
a7e11ee1 | 1409 | |
cdc83fba UW |
1410 | set_id = ((dest_ovl - 1) >> htab->num_lines_log2) + 1; |
1411 | bfd_put_32 (sec->owner, (set_id << 18) | (dest & 0x3ffff), | |
1412 | sec->contents + sec->size); | |
1413 | bfd_put_32 (sec->owner, BRASL + ((to << 5) & 0x007fff80) + 75, | |
1414 | sec->contents + sec->size + 4); | |
1415 | bfd_put_32 (sec->owner, (lrlive << 29) | (g->br_addr & 0x3ffff), | |
1416 | sec->contents + sec->size + 8); | |
1417 | patt = dest ^ br_dest; | |
1418 | if (irela != NULL && ELF32_R_TYPE (irela->r_info) == R_SPU_REL16) | |
1419 | patt = (dest - g->br_addr) ^ (br_dest - g->br_addr); | |
1420 | bfd_put_32 (sec->owner, (patt << 5) & 0x007fff80, | |
1421 | sec->contents + sec->size + 12); | |
cd4a7468 | 1422 | |
cd4a7468 AM |
1423 | if (ovl == 0) |
1424 | /* Extra space for linked list entries. */ | |
1425 | sec->size += 16; | |
47f6dab9 | 1426 | } |
a7e11ee1 AM |
1427 | else |
1428 | abort (); | |
1429 | ||
1430 | sec->size += ovl_stub_size (htab->params); | |
47f6dab9 | 1431 | |
64615358 | 1432 | if (htab->params->emit_stub_syms) |
47f6dab9 AM |
1433 | { |
1434 | size_t len; | |
1435 | char *name; | |
1436 | int add; | |
1437 | ||
1438 | len = 8 + sizeof (".ovl_call.") - 1; | |
1439 | if (h != NULL) | |
1440 | len += strlen (h->root.root.string); | |
1441 | else | |
1442 | len += 8 + 1 + 8; | |
1443 | add = 0; | |
1444 | if (irela != NULL) | |
1445 | add = (int) irela->r_addend & 0xffffffff; | |
1446 | if (add != 0) | |
1447 | len += 1 + 8; | |
cb83c803 | 1448 | name = bfd_malloc (len + 1); |
47f6dab9 AM |
1449 | if (name == NULL) |
1450 | return FALSE; | |
1451 | ||
1452 | sprintf (name, "%08x.ovl_call.", g->ovl); | |
1453 | if (h != NULL) | |
1454 | strcpy (name + 8 + sizeof (".ovl_call.") - 1, h->root.root.string); | |
1455 | else | |
1456 | sprintf (name + 8 + sizeof (".ovl_call.") - 1, "%x:%x", | |
1457 | dest_sec->id & 0xffffffff, | |
1458 | (int) ELF32_R_SYM (irela->r_info) & 0xffffffff); | |
1459 | if (add != 0) | |
1460 | sprintf (name + len - 9, "+%x", add); | |
1461 | ||
1462 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, TRUE, FALSE); | |
1463 | free (name); | |
1464 | if (h == NULL) | |
1465 | return FALSE; | |
1466 | if (h->root.type == bfd_link_hash_new) | |
1467 | { | |
1468 | h->root.type = bfd_link_hash_defined; | |
1469 | h->root.u.def.section = sec; | |
a7e11ee1 | 1470 | h->size = ovl_stub_size (htab->params); |
64615358 | 1471 | h->root.u.def.value = sec->size - h->size; |
47f6dab9 AM |
1472 | h->type = STT_FUNC; |
1473 | h->ref_regular = 1; | |
1474 | h->def_regular = 1; | |
1475 | h->ref_regular_nonweak = 1; | |
1476 | h->forced_local = 1; | |
1477 | h->non_elf = 0; | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | return TRUE; | |
1482 | } | |
1483 | ||
f4b39977 AM |
1484 | /* Called via elf_link_hash_traverse to allocate stubs for any _SPUEAR_ |
1485 | symbols. */ | |
1486 | ||
1487 | static bfd_boolean | |
1488 | allocate_spuear_stubs (struct elf_link_hash_entry *h, void *inf) | |
1489 | { | |
1490 | /* Symbols starting with _SPUEAR_ need a stub because they may be | |
1491 | invoked by the PPU. */ | |
380814a6 AM |
1492 | struct bfd_link_info *info = inf; |
1493 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
1494 | asection *sym_sec; | |
1495 | ||
f4b39977 AM |
1496 | if ((h->root.type == bfd_link_hash_defined |
1497 | || h->root.type == bfd_link_hash_defweak) | |
1498 | && h->def_regular | |
380814a6 AM |
1499 | && strncmp (h->root.root.string, "_SPUEAR_", 8) == 0 |
1500 | && (sym_sec = h->root.u.def.section) != NULL | |
64615358 | 1501 | && sym_sec->output_section != bfd_abs_section_ptr |
380814a6 AM |
1502 | && spu_elf_section_data (sym_sec->output_section) != NULL |
1503 | && (spu_elf_section_data (sym_sec->output_section)->u.o.ovl_index != 0 | |
64615358 | 1504 | || htab->params->non_overlay_stubs)) |
f4b39977 | 1505 | { |
f3c29e8a | 1506 | return count_stub (htab, NULL, NULL, nonovl_stub, h, NULL); |
f4b39977 | 1507 | } |
68ffbac6 | 1508 | |
f4b39977 AM |
1509 | return TRUE; |
1510 | } | |
1511 | ||
e9f53129 | 1512 | static bfd_boolean |
47f6dab9 | 1513 | build_spuear_stubs (struct elf_link_hash_entry *h, void *inf) |
e9f53129 | 1514 | { |
47f6dab9 AM |
1515 | /* Symbols starting with _SPUEAR_ need a stub because they may be |
1516 | invoked by the PPU. */ | |
380814a6 AM |
1517 | struct bfd_link_info *info = inf; |
1518 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
1519 | asection *sym_sec; | |
1520 | ||
47f6dab9 AM |
1521 | if ((h->root.type == bfd_link_hash_defined |
1522 | || h->root.type == bfd_link_hash_defweak) | |
1523 | && h->def_regular | |
380814a6 AM |
1524 | && strncmp (h->root.root.string, "_SPUEAR_", 8) == 0 |
1525 | && (sym_sec = h->root.u.def.section) != NULL | |
64615358 | 1526 | && sym_sec->output_section != bfd_abs_section_ptr |
380814a6 AM |
1527 | && spu_elf_section_data (sym_sec->output_section) != NULL |
1528 | && (spu_elf_section_data (sym_sec->output_section)->u.o.ovl_index != 0 | |
64615358 | 1529 | || htab->params->non_overlay_stubs)) |
47f6dab9 | 1530 | { |
cd4a7468 | 1531 | return build_stub (info, NULL, NULL, nonovl_stub, h, NULL, |
f3c29e8a | 1532 | h->root.u.def.value, sym_sec); |
47f6dab9 | 1533 | } |
68ffbac6 | 1534 | |
e9f53129 AM |
1535 | return TRUE; |
1536 | } | |
1537 | ||
47f6dab9 | 1538 | /* Size or build stubs. */ |
e9f53129 | 1539 | |
47f6dab9 | 1540 | static bfd_boolean |
c65be8d7 | 1541 | process_stubs (struct bfd_link_info *info, bfd_boolean build) |
e9f53129 AM |
1542 | { |
1543 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
1544 | bfd *ibfd; | |
e9f53129 | 1545 | |
c72f2fb2 | 1546 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
e9f53129 | 1547 | { |
6d00b590 | 1548 | extern const bfd_target spu_elf32_vec; |
e9f53129 | 1549 | Elf_Internal_Shdr *symtab_hdr; |
47f6dab9 | 1550 | asection *isec; |
e9f53129 AM |
1551 | Elf_Internal_Sym *local_syms = NULL; |
1552 | ||
6d00b590 | 1553 | if (ibfd->xvec != &spu_elf32_vec) |
e9f53129 AM |
1554 | continue; |
1555 | ||
1556 | /* We'll need the symbol table in a second. */ | |
1557 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
1558 | if (symtab_hdr->sh_info == 0) | |
1559 | continue; | |
1560 | ||
1561 | /* Walk over each section attached to the input bfd. */ | |
47f6dab9 | 1562 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) |
e9f53129 AM |
1563 | { |
1564 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
1565 | ||
1566 | /* If there aren't any relocs, then there's nothing more to do. */ | |
47f6dab9 | 1567 | if ((isec->flags & SEC_RELOC) == 0 |
47f6dab9 | 1568 | || isec->reloc_count == 0) |
e9f53129 AM |
1569 | continue; |
1570 | ||
64615358 | 1571 | if (!maybe_needs_stubs (isec)) |
e9f53129 AM |
1572 | continue; |
1573 | ||
1574 | /* Get the relocs. */ | |
47f6dab9 AM |
1575 | internal_relocs = _bfd_elf_link_read_relocs (ibfd, isec, NULL, NULL, |
1576 | info->keep_memory); | |
e9f53129 AM |
1577 | if (internal_relocs == NULL) |
1578 | goto error_ret_free_local; | |
1579 | ||
1580 | /* Now examine each relocation. */ | |
1581 | irela = internal_relocs; | |
47f6dab9 | 1582 | irelaend = irela + isec->reloc_count; |
e9f53129 AM |
1583 | for (; irela < irelaend; irela++) |
1584 | { | |
1585 | enum elf_spu_reloc_type r_type; | |
1586 | unsigned int r_indx; | |
1587 | asection *sym_sec; | |
1588 | Elf_Internal_Sym *sym; | |
1589 | struct elf_link_hash_entry *h; | |
fdba2fcd | 1590 | enum _stub_type stub_type; |
e9f53129 AM |
1591 | |
1592 | r_type = ELF32_R_TYPE (irela->r_info); | |
1593 | r_indx = ELF32_R_SYM (irela->r_info); | |
1594 | ||
1595 | if (r_type >= R_SPU_max) | |
1596 | { | |
1597 | bfd_set_error (bfd_error_bad_value); | |
47f6dab9 AM |
1598 | error_ret_free_internal: |
1599 | if (elf_section_data (isec)->relocs != internal_relocs) | |
1600 | free (internal_relocs); | |
1601 | error_ret_free_local: | |
c9594989 | 1602 | if (symtab_hdr->contents != (unsigned char *) local_syms) |
47f6dab9 AM |
1603 | free (local_syms); |
1604 | return FALSE; | |
e9f53129 AM |
1605 | } |
1606 | ||
1607 | /* Determine the reloc target section. */ | |
1f27ab8d | 1608 | if (!get_sym_h (&h, &sym, &sym_sec, &local_syms, r_indx, ibfd)) |
e9f53129 AM |
1609 | goto error_ret_free_internal; |
1610 | ||
fdba2fcd AM |
1611 | stub_type = needs_ovl_stub (h, sym, sym_sec, isec, irela, |
1612 | NULL, info); | |
1613 | if (stub_type == no_stub) | |
e9f53129 | 1614 | continue; |
fdba2fcd AM |
1615 | else if (stub_type == stub_error) |
1616 | goto error_ret_free_internal; | |
e9f53129 | 1617 | |
47f6dab9 | 1618 | if (htab->stub_count == NULL) |
e9f53129 | 1619 | { |
47f6dab9 AM |
1620 | bfd_size_type amt; |
1621 | amt = (htab->num_overlays + 1) * sizeof (*htab->stub_count); | |
1622 | htab->stub_count = bfd_zmalloc (amt); | |
1623 | if (htab->stub_count == NULL) | |
1624 | goto error_ret_free_internal; | |
e9f53129 AM |
1625 | } |
1626 | ||
47f6dab9 | 1627 | if (!build) |
e9f53129 | 1628 | { |
fdba2fcd | 1629 | if (!count_stub (htab, ibfd, isec, stub_type, h, irela)) |
47f6dab9 | 1630 | goto error_ret_free_internal; |
e9f53129 | 1631 | } |
e9f53129 | 1632 | else |
47f6dab9 AM |
1633 | { |
1634 | bfd_vma dest; | |
1635 | ||
1636 | if (h != NULL) | |
1637 | dest = h->root.u.def.value; | |
1638 | else | |
1639 | dest = sym->st_value; | |
4a628337 | 1640 | dest += irela->r_addend; |
cd4a7468 | 1641 | if (!build_stub (info, ibfd, isec, stub_type, h, irela, |
47f6dab9 AM |
1642 | dest, sym_sec)) |
1643 | goto error_ret_free_internal; | |
1644 | } | |
e9f53129 AM |
1645 | } |
1646 | ||
1647 | /* We're done with the internal relocs, free them. */ | |
47f6dab9 | 1648 | if (elf_section_data (isec)->relocs != internal_relocs) |
e9f53129 AM |
1649 | free (internal_relocs); |
1650 | } | |
1651 | ||
1652 | if (local_syms != NULL | |
1653 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
1654 | { | |
1655 | if (!info->keep_memory) | |
1656 | free (local_syms); | |
1657 | else | |
1658 | symtab_hdr->contents = (unsigned char *) local_syms; | |
1659 | } | |
1660 | } | |
1661 | ||
47f6dab9 AM |
1662 | return TRUE; |
1663 | } | |
1664 | ||
a7e11ee1 | 1665 | /* Allocate space for overlay call and return stubs. |
52cfded7 | 1666 | Return 0 on error, 1 if no overlays, 2 otherwise. */ |
47f6dab9 AM |
1667 | |
1668 | int | |
64615358 | 1669 | spu_elf_size_stubs (struct bfd_link_info *info) |
47f6dab9 | 1670 | { |
64615358 | 1671 | struct spu_link_hash_table *htab; |
47f6dab9 AM |
1672 | bfd *ibfd; |
1673 | bfd_size_type amt; | |
1674 | flagword flags; | |
1675 | unsigned int i; | |
1676 | asection *stub; | |
1677 | ||
c65be8d7 | 1678 | if (!process_stubs (info, FALSE)) |
47f6dab9 AM |
1679 | return 0; |
1680 | ||
64615358 | 1681 | htab = spu_hash_table (info); |
380814a6 | 1682 | elf_link_hash_traverse (&htab->elf, allocate_spuear_stubs, info); |
47f6dab9 AM |
1683 | if (htab->stub_err) |
1684 | return 0; | |
f4b39977 | 1685 | |
e9f53129 | 1686 | ibfd = info->input_bfds; |
52cfded7 | 1687 | if (htab->stub_count != NULL) |
e9f53129 | 1688 | { |
52cfded7 AM |
1689 | amt = (htab->num_overlays + 1) * sizeof (*htab->stub_sec); |
1690 | htab->stub_sec = bfd_zmalloc (amt); | |
1691 | if (htab->stub_sec == NULL) | |
1692 | return 0; | |
1693 | ||
1694 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
1695 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY); | |
47f6dab9 | 1696 | stub = bfd_make_section_anyway_with_flags (ibfd, ".stub", flags); |
52cfded7 | 1697 | htab->stub_sec[0] = stub; |
47f6dab9 | 1698 | if (stub == NULL |
fd361982 | 1699 | || !bfd_set_section_alignment (stub, |
a7e11ee1 | 1700 | ovl_stub_size_log2 (htab->params))) |
47f6dab9 | 1701 | return 0; |
52cfded7 AM |
1702 | stub->size = htab->stub_count[0] * ovl_stub_size (htab->params); |
1703 | if (htab->params->ovly_flavour == ovly_soft_icache) | |
1704 | /* Extra space for linked list entries. */ | |
1705 | stub->size += htab->stub_count[0] * 16; | |
1706 | ||
1707 | for (i = 0; i < htab->num_overlays; ++i) | |
1708 | { | |
1709 | asection *osec = htab->ovl_sec[i]; | |
1710 | unsigned int ovl = spu_elf_section_data (osec)->u.o.ovl_index; | |
1711 | stub = bfd_make_section_anyway_with_flags (ibfd, ".stub", flags); | |
1712 | htab->stub_sec[ovl] = stub; | |
1713 | if (stub == NULL | |
fd361982 | 1714 | || !bfd_set_section_alignment (stub, |
52cfded7 AM |
1715 | ovl_stub_size_log2 (htab->params))) |
1716 | return 0; | |
1717 | stub->size = htab->stub_count[ovl] * ovl_stub_size (htab->params); | |
1718 | } | |
e9f53129 | 1719 | } |
e9f53129 | 1720 | |
cd4a7468 AM |
1721 | if (htab->params->ovly_flavour == ovly_soft_icache) |
1722 | { | |
1723 | /* Space for icache manager tables. | |
1724 | a) Tag array, one quadword per cache line. | |
97fc8d84 UW |
1725 | b) Rewrite "to" list, one quadword per cache line. |
1726 | c) Rewrite "from" list, one byte per outgoing branch (rounded up to | |
1727 | a power-of-two number of full quadwords) per cache line. */ | |
1728 | ||
1729 | flags = SEC_ALLOC; | |
1730 | htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags); | |
1731 | if (htab->ovtab == NULL | |
fd361982 | 1732 | || !bfd_set_section_alignment (htab->ovtab, 4)) |
97fc8d84 UW |
1733 | return 0; |
1734 | ||
1735 | htab->ovtab->size = (16 + 16 + (16 << htab->fromelem_size_log2)) | |
1736 | << htab->num_lines_log2; | |
cd4a7468 | 1737 | |
97fc8d84 | 1738 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
cd4a7468 AM |
1739 | htab->init = bfd_make_section_anyway_with_flags (ibfd, ".ovini", flags); |
1740 | if (htab->init == NULL | |
fd361982 | 1741 | || !bfd_set_section_alignment (htab->init, 4)) |
cd4a7468 AM |
1742 | return 0; |
1743 | ||
1744 | htab->init->size = 16; | |
cd4a7468 | 1745 | } |
52cfded7 AM |
1746 | else if (htab->stub_count == NULL) |
1747 | return 1; | |
cd4a7468 AM |
1748 | else |
1749 | { | |
1750 | /* htab->ovtab consists of two arrays. | |
1751 | . struct { | |
1752 | . u32 vma; | |
1753 | . u32 size; | |
1754 | . u32 file_off; | |
1755 | . u32 buf; | |
1756 | . } _ovly_table[]; | |
1757 | . | |
1758 | . struct { | |
1759 | . u32 mapped; | |
1760 | . } _ovly_buf_table[]; | |
1761 | . */ | |
1762 | ||
97fc8d84 UW |
1763 | flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY; |
1764 | htab->ovtab = bfd_make_section_anyway_with_flags (ibfd, ".ovtab", flags); | |
1765 | if (htab->ovtab == NULL | |
fd361982 | 1766 | || !bfd_set_section_alignment (htab->ovtab, 4)) |
97fc8d84 UW |
1767 | return 0; |
1768 | ||
cd4a7468 AM |
1769 | htab->ovtab->size = htab->num_overlays * 16 + 16 + htab->num_buf * 4; |
1770 | } | |
47f6dab9 AM |
1771 | |
1772 | htab->toe = bfd_make_section_anyway_with_flags (ibfd, ".toe", SEC_ALLOC); | |
1773 | if (htab->toe == NULL | |
fd361982 | 1774 | || !bfd_set_section_alignment (htab->toe, 4)) |
47f6dab9 | 1775 | return 0; |
c1ea05bb | 1776 | htab->toe->size = 16; |
47f6dab9 AM |
1777 | |
1778 | return 2; | |
e9f53129 AM |
1779 | } |
1780 | ||
bbb0fc04 AM |
1781 | /* Called from ld to place overlay manager data sections. This is done |
1782 | after the overlay manager itself is loaded, mainly so that the | |
1783 | linker's htab->init section is placed after any other .ovl.init | |
1784 | sections. */ | |
1785 | ||
1786 | void | |
1787 | spu_elf_place_overlay_data (struct bfd_link_info *info) | |
1788 | { | |
1789 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
1790 | unsigned int i; | |
bbb0fc04 | 1791 | |
52cfded7 | 1792 | if (htab->stub_sec != NULL) |
bbb0fc04 | 1793 | { |
52cfded7 AM |
1794 | (*htab->params->place_spu_section) (htab->stub_sec[0], NULL, ".text"); |
1795 | ||
1796 | for (i = 0; i < htab->num_overlays; ++i) | |
1797 | { | |
1798 | asection *osec = htab->ovl_sec[i]; | |
1799 | unsigned int ovl = spu_elf_section_data (osec)->u.o.ovl_index; | |
1800 | (*htab->params->place_spu_section) (htab->stub_sec[ovl], osec, NULL); | |
1801 | } | |
bbb0fc04 AM |
1802 | } |
1803 | ||
1804 | if (htab->params->ovly_flavour == ovly_soft_icache) | |
1805 | (*htab->params->place_spu_section) (htab->init, NULL, ".ovl.init"); | |
1806 | ||
52cfded7 AM |
1807 | if (htab->ovtab != NULL) |
1808 | { | |
1809 | const char *ovout = ".data"; | |
1810 | if (htab->params->ovly_flavour == ovly_soft_icache) | |
1811 | ovout = ".bss"; | |
1812 | (*htab->params->place_spu_section) (htab->ovtab, NULL, ovout); | |
1813 | } | |
bbb0fc04 | 1814 | |
52cfded7 AM |
1815 | if (htab->toe != NULL) |
1816 | (*htab->params->place_spu_section) (htab->toe, NULL, ".toe"); | |
bbb0fc04 AM |
1817 | } |
1818 | ||
e9f53129 AM |
1819 | /* Functions to handle embedded spu_ovl.o object. */ |
1820 | ||
1821 | static void * | |
1822 | ovl_mgr_open (struct bfd *nbfd ATTRIBUTE_UNUSED, void *stream) | |
1823 | { | |
1824 | return stream; | |
1825 | } | |
1826 | ||
1827 | static file_ptr | |
1828 | ovl_mgr_pread (struct bfd *abfd ATTRIBUTE_UNUSED, | |
1829 | void *stream, | |
1830 | void *buf, | |
1831 | file_ptr nbytes, | |
1832 | file_ptr offset) | |
1833 | { | |
1834 | struct _ovl_stream *os; | |
1835 | size_t count; | |
1836 | size_t max; | |
1837 | ||
1838 | os = (struct _ovl_stream *) stream; | |
7a8757b3 | 1839 | max = (const char *) os->end - (const char *) os->start; |
e9f53129 AM |
1840 | |
1841 | if ((ufile_ptr) offset >= max) | |
1842 | return 0; | |
1843 | ||
1844 | count = nbytes; | |
1845 | if (count > max - offset) | |
1846 | count = max - offset; | |
1847 | ||
7a8757b3 | 1848 | memcpy (buf, (const char *) os->start + offset, count); |
e9f53129 AM |
1849 | return count; |
1850 | } | |
1851 | ||
ef42b83e AM |
1852 | static int |
1853 | ovl_mgr_stat (struct bfd *abfd ATTRIBUTE_UNUSED, | |
1854 | void *stream, | |
1855 | struct stat *sb) | |
1856 | { | |
1857 | struct _ovl_stream *os = (struct _ovl_stream *) stream; | |
1858 | ||
1859 | memset (sb, 0, sizeof (*sb)); | |
1860 | sb->st_size = (const char *) os->end - (const char *) os->start; | |
1861 | return 0; | |
1862 | } | |
1863 | ||
e9f53129 AM |
1864 | bfd_boolean |
1865 | spu_elf_open_builtin_lib (bfd **ovl_bfd, const struct _ovl_stream *stream) | |
1866 | { | |
1867 | *ovl_bfd = bfd_openr_iovec ("builtin ovl_mgr", | |
1868 | "elf32-spu", | |
1869 | ovl_mgr_open, | |
1870 | (void *) stream, | |
1871 | ovl_mgr_pread, | |
f6cf9273 | 1872 | NULL, |
ef42b83e | 1873 | ovl_mgr_stat); |
e9f53129 AM |
1874 | return *ovl_bfd != NULL; |
1875 | } | |
1876 | ||
cd4a7468 AM |
1877 | static unsigned int |
1878 | overlay_index (asection *sec) | |
1879 | { | |
1880 | if (sec == NULL | |
1881 | || sec->output_section == bfd_abs_section_ptr) | |
1882 | return 0; | |
1883 | return spu_elf_section_data (sec->output_section)->u.o.ovl_index; | |
1884 | } | |
1885 | ||
e9f53129 AM |
1886 | /* Define an STT_OBJECT symbol. */ |
1887 | ||
1888 | static struct elf_link_hash_entry * | |
1889 | define_ovtab_symbol (struct spu_link_hash_table *htab, const char *name) | |
1890 | { | |
1891 | struct elf_link_hash_entry *h; | |
1892 | ||
1893 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
1894 | if (h == NULL) | |
1895 | return NULL; | |
1896 | ||
1897 | if (h->root.type != bfd_link_hash_defined | |
1898 | || !h->def_regular) | |
1899 | { | |
1900 | h->root.type = bfd_link_hash_defined; | |
1901 | h->root.u.def.section = htab->ovtab; | |
1902 | h->type = STT_OBJECT; | |
1903 | h->ref_regular = 1; | |
1904 | h->def_regular = 1; | |
1905 | h->ref_regular_nonweak = 1; | |
1906 | h->non_elf = 0; | |
1907 | } | |
b0c41709 | 1908 | else if (h->root.u.def.section->owner != NULL) |
e9f53129 | 1909 | { |
695344c0 | 1910 | /* xgettext:c-format */ |
871b3ab2 | 1911 | _bfd_error_handler (_("%pB is not allowed to define %s"), |
4eca0228 AM |
1912 | h->root.u.def.section->owner, |
1913 | h->root.root.string); | |
e9f53129 AM |
1914 | bfd_set_error (bfd_error_bad_value); |
1915 | return NULL; | |
1916 | } | |
b0c41709 AM |
1917 | else |
1918 | { | |
4eca0228 AM |
1919 | _bfd_error_handler (_("you are not allowed to define %s in a script"), |
1920 | h->root.root.string); | |
b0c41709 AM |
1921 | bfd_set_error (bfd_error_bad_value); |
1922 | return NULL; | |
1923 | } | |
e9f53129 AM |
1924 | |
1925 | return h; | |
1926 | } | |
1927 | ||
1928 | /* Fill in all stubs and the overlay tables. */ | |
1929 | ||
cd4a7468 | 1930 | static bfd_boolean |
64615358 | 1931 | spu_elf_build_stubs (struct bfd_link_info *info) |
e9f53129 AM |
1932 | { |
1933 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
1934 | struct elf_link_hash_entry *h; | |
1935 | bfd_byte *p; | |
1936 | asection *s; | |
1937 | bfd *obfd; | |
1938 | unsigned int i; | |
1939 | ||
52cfded7 | 1940 | if (htab->num_overlays != 0) |
cd4a7468 | 1941 | { |
52cfded7 | 1942 | for (i = 0; i < 2; i++) |
ad2adbc8 | 1943 | { |
52cfded7 AM |
1944 | h = htab->ovly_entry[i]; |
1945 | if (h != NULL | |
1946 | && (h->root.type == bfd_link_hash_defined | |
1947 | || h->root.type == bfd_link_hash_defweak) | |
1948 | && h->def_regular) | |
ad2adbc8 | 1949 | { |
52cfded7 AM |
1950 | s = h->root.u.def.section->output_section; |
1951 | if (spu_elf_section_data (s)->u.o.ovl_index) | |
1952 | { | |
4eca0228 AM |
1953 | _bfd_error_handler (_("%s in overlay section"), |
1954 | h->root.root.string); | |
52cfded7 AM |
1955 | bfd_set_error (bfd_error_bad_value); |
1956 | return FALSE; | |
1957 | } | |
ad2adbc8 AM |
1958 | } |
1959 | } | |
cd4a7468 | 1960 | } |
47f6dab9 | 1961 | |
52cfded7 | 1962 | if (htab->stub_sec != NULL) |
f3c29e8a | 1963 | { |
52cfded7 AM |
1964 | for (i = 0; i <= htab->num_overlays; i++) |
1965 | if (htab->stub_sec[i]->size != 0) | |
1966 | { | |
1967 | htab->stub_sec[i]->contents = bfd_zalloc (htab->stub_sec[i]->owner, | |
1968 | htab->stub_sec[i]->size); | |
1969 | if (htab->stub_sec[i]->contents == NULL) | |
1970 | return FALSE; | |
1971 | htab->stub_sec[i]->rawsize = htab->stub_sec[i]->size; | |
1972 | htab->stub_sec[i]->size = 0; | |
1973 | } | |
e9f53129 | 1974 | |
52cfded7 AM |
1975 | /* Fill in all the stubs. */ |
1976 | process_stubs (info, TRUE); | |
1977 | if (!htab->stub_err) | |
1978 | elf_link_hash_traverse (&htab->elf, build_spuear_stubs, info); | |
1979 | ||
1980 | if (htab->stub_err) | |
47f6dab9 | 1981 | { |
4eca0228 | 1982 | _bfd_error_handler (_("overlay stub relocation overflow")); |
47f6dab9 AM |
1983 | bfd_set_error (bfd_error_bad_value); |
1984 | return FALSE; | |
1985 | } | |
52cfded7 AM |
1986 | |
1987 | for (i = 0; i <= htab->num_overlays; i++) | |
1988 | { | |
1989 | if (htab->stub_sec[i]->size != htab->stub_sec[i]->rawsize) | |
1990 | { | |
4eca0228 | 1991 | _bfd_error_handler (_("stubs don't match calculated size")); |
52cfded7 AM |
1992 | bfd_set_error (bfd_error_bad_value); |
1993 | return FALSE; | |
1994 | } | |
1995 | htab->stub_sec[i]->rawsize = 0; | |
1996 | } | |
47f6dab9 AM |
1997 | } |
1998 | ||
cd4a7468 AM |
1999 | if (htab->ovtab == NULL || htab->ovtab->size == 0) |
2000 | return TRUE; | |
2001 | ||
e9f53129 AM |
2002 | htab->ovtab->contents = bfd_zalloc (htab->ovtab->owner, htab->ovtab->size); |
2003 | if (htab->ovtab->contents == NULL) | |
2004 | return FALSE; | |
2005 | ||
e9f53129 | 2006 | p = htab->ovtab->contents; |
cd4a7468 | 2007 | if (htab->params->ovly_flavour == ovly_soft_icache) |
e9f53129 | 2008 | { |
97fc8d84 | 2009 | bfd_vma off; |
cd4a7468 | 2010 | |
77ae44b0 | 2011 | h = define_ovtab_symbol (htab, "__icache_tag_array"); |
cd4a7468 AM |
2012 | if (h == NULL) |
2013 | return FALSE; | |
2014 | h->root.u.def.value = 0; | |
2015 | h->size = 16 << htab->num_lines_log2; | |
2016 | off = h->size; | |
77ae44b0 AM |
2017 | |
2018 | h = define_ovtab_symbol (htab, "__icache_tag_array_size"); | |
2019 | if (h == NULL) | |
2020 | return FALSE; | |
2021 | h->root.u.def.value = 16 << htab->num_lines_log2; | |
2022 | h->root.u.def.section = bfd_abs_section_ptr; | |
2023 | ||
97fc8d84 UW |
2024 | h = define_ovtab_symbol (htab, "__icache_rewrite_to"); |
2025 | if (h == NULL) | |
2026 | return FALSE; | |
2027 | h->root.u.def.value = off; | |
2028 | h->size = 16 << htab->num_lines_log2; | |
2029 | off += h->size; | |
2030 | ||
2031 | h = define_ovtab_symbol (htab, "__icache_rewrite_to_size"); | |
2032 | if (h == NULL) | |
2033 | return FALSE; | |
2034 | h->root.u.def.value = 16 << htab->num_lines_log2; | |
2035 | h->root.u.def.section = bfd_abs_section_ptr; | |
cd4a7468 | 2036 | |
97fc8d84 | 2037 | h = define_ovtab_symbol (htab, "__icache_rewrite_from"); |
cd4a7468 AM |
2038 | if (h == NULL) |
2039 | return FALSE; | |
2040 | h->root.u.def.value = off; | |
97fc8d84 | 2041 | h->size = 16 << (htab->fromelem_size_log2 + htab->num_lines_log2); |
cd4a7468 | 2042 | off += h->size; |
97fc8d84 UW |
2043 | |
2044 | h = define_ovtab_symbol (htab, "__icache_rewrite_from_size"); | |
2045 | if (h == NULL) | |
2046 | return FALSE; | |
2047 | h->root.u.def.value = 16 << (htab->fromelem_size_log2 | |
2048 | + htab->num_lines_log2); | |
2049 | h->root.u.def.section = bfd_abs_section_ptr; | |
2050 | ||
2051 | h = define_ovtab_symbol (htab, "__icache_log2_fromelemsize"); | |
2052 | if (h == NULL) | |
2053 | return FALSE; | |
2054 | h->root.u.def.value = htab->fromelem_size_log2; | |
2055 | h->root.u.def.section = bfd_abs_section_ptr; | |
cd4a7468 | 2056 | |
cd4a7468 AM |
2057 | h = define_ovtab_symbol (htab, "__icache_base"); |
2058 | if (h == NULL) | |
2059 | return FALSE; | |
460e679b AM |
2060 | h->root.u.def.value = htab->ovl_sec[0]->vma; |
2061 | h->root.u.def.section = bfd_abs_section_ptr; | |
cd4a7468 | 2062 | h->size = htab->num_buf << htab->line_size_log2; |
e9f53129 | 2063 | |
97fc8d84 UW |
2064 | h = define_ovtab_symbol (htab, "__icache_linesize"); |
2065 | if (h == NULL) | |
2066 | return FALSE; | |
2067 | h->root.u.def.value = 1 << htab->line_size_log2; | |
2068 | h->root.u.def.section = bfd_abs_section_ptr; | |
2069 | ||
2070 | h = define_ovtab_symbol (htab, "__icache_log2_linesize"); | |
2071 | if (h == NULL) | |
2072 | return FALSE; | |
2073 | h->root.u.def.value = htab->line_size_log2; | |
2074 | h->root.u.def.section = bfd_abs_section_ptr; | |
2075 | ||
50e00962 AM |
2076 | h = define_ovtab_symbol (htab, "__icache_neg_log2_linesize"); |
2077 | if (h == NULL) | |
2078 | return FALSE; | |
2079 | h->root.u.def.value = -htab->line_size_log2; | |
2080 | h->root.u.def.section = bfd_abs_section_ptr; | |
2081 | ||
97fc8d84 UW |
2082 | h = define_ovtab_symbol (htab, "__icache_cachesize"); |
2083 | if (h == NULL) | |
2084 | return FALSE; | |
2085 | h->root.u.def.value = 1 << (htab->num_lines_log2 + htab->line_size_log2); | |
2086 | h->root.u.def.section = bfd_abs_section_ptr; | |
2087 | ||
2088 | h = define_ovtab_symbol (htab, "__icache_log2_cachesize"); | |
2089 | if (h == NULL) | |
2090 | return FALSE; | |
2091 | h->root.u.def.value = htab->num_lines_log2 + htab->line_size_log2; | |
2092 | h->root.u.def.section = bfd_abs_section_ptr; | |
2093 | ||
2094 | h = define_ovtab_symbol (htab, "__icache_neg_log2_cachesize"); | |
2095 | if (h == NULL) | |
2096 | return FALSE; | |
2097 | h->root.u.def.value = -(htab->num_lines_log2 + htab->line_size_log2); | |
2098 | h->root.u.def.section = bfd_abs_section_ptr; | |
2099 | ||
cd4a7468 | 2100 | if (htab->init != NULL && htab->init->size != 0) |
e9f53129 | 2101 | { |
cd4a7468 AM |
2102 | htab->init->contents = bfd_zalloc (htab->init->owner, |
2103 | htab->init->size); | |
2104 | if (htab->init->contents == NULL) | |
2105 | return FALSE; | |
47f6dab9 | 2106 | |
cd4a7468 AM |
2107 | h = define_ovtab_symbol (htab, "__icache_fileoff"); |
2108 | if (h == NULL) | |
2109 | return FALSE; | |
2110 | h->root.u.def.value = 0; | |
2111 | h->root.u.def.section = htab->init; | |
2112 | h->size = 8; | |
e9f53129 AM |
2113 | } |
2114 | } | |
cd4a7468 AM |
2115 | else |
2116 | { | |
2117 | /* Write out _ovly_table. */ | |
2118 | /* set low bit of .size to mark non-overlay area as present. */ | |
2119 | p[7] = 1; | |
2120 | obfd = htab->ovtab->output_section->owner; | |
2121 | for (s = obfd->sections; s != NULL; s = s->next) | |
2122 | { | |
2123 | unsigned int ovl_index = spu_elf_section_data (s)->u.o.ovl_index; | |
e9f53129 | 2124 | |
cd4a7468 AM |
2125 | if (ovl_index != 0) |
2126 | { | |
2127 | unsigned long off = ovl_index * 16; | |
2128 | unsigned int ovl_buf = spu_elf_section_data (s)->u.o.ovl_buf; | |
2129 | ||
2130 | bfd_put_32 (htab->ovtab->owner, s->vma, p + off); | |
2131 | bfd_put_32 (htab->ovtab->owner, (s->size + 15) & -16, | |
2132 | p + off + 4); | |
6d6c25c8 | 2133 | /* file_off written later in spu_elf_modify_headers. */ |
cd4a7468 AM |
2134 | bfd_put_32 (htab->ovtab->owner, ovl_buf, p + off + 12); |
2135 | } | |
2136 | } | |
e9f53129 | 2137 | |
cd4a7468 AM |
2138 | h = define_ovtab_symbol (htab, "_ovly_table"); |
2139 | if (h == NULL) | |
2140 | return FALSE; | |
2141 | h->root.u.def.value = 16; | |
2142 | h->size = htab->num_overlays * 16; | |
e9f53129 | 2143 | |
cd4a7468 AM |
2144 | h = define_ovtab_symbol (htab, "_ovly_table_end"); |
2145 | if (h == NULL) | |
2146 | return FALSE; | |
2147 | h->root.u.def.value = htab->num_overlays * 16 + 16; | |
2148 | h->size = 0; | |
e9f53129 | 2149 | |
cd4a7468 AM |
2150 | h = define_ovtab_symbol (htab, "_ovly_buf_table"); |
2151 | if (h == NULL) | |
2152 | return FALSE; | |
2153 | h->root.u.def.value = htab->num_overlays * 16 + 16; | |
2154 | h->size = htab->num_buf * 4; | |
2155 | ||
2156 | h = define_ovtab_symbol (htab, "_ovly_buf_table_end"); | |
2157 | if (h == NULL) | |
2158 | return FALSE; | |
2159 | h->root.u.def.value = htab->num_overlays * 16 + 16 + htab->num_buf * 4; | |
2160 | h->size = 0; | |
2161 | } | |
e9f53129 AM |
2162 | |
2163 | h = define_ovtab_symbol (htab, "_EAR_"); | |
2164 | if (h == NULL) | |
2165 | return FALSE; | |
47f6dab9 | 2166 | h->root.u.def.section = htab->toe; |
e9f53129 | 2167 | h->root.u.def.value = 0; |
c1ea05bb | 2168 | h->size = 16; |
e9f53129 AM |
2169 | |
2170 | return TRUE; | |
2171 | } | |
2172 | ||
c65be8d7 | 2173 | /* Check that all loadable section VMAs lie in the range |
9dcc4794 | 2174 | LO .. HI inclusive, and stash some parameters for --auto-overlay. */ |
c65be8d7 AM |
2175 | |
2176 | asection * | |
64615358 | 2177 | spu_elf_check_vma (struct bfd_link_info *info) |
c65be8d7 AM |
2178 | { |
2179 | struct elf_segment_map *m; | |
2180 | unsigned int i; | |
9dcc4794 | 2181 | struct spu_link_hash_table *htab = spu_hash_table (info); |
c65be8d7 | 2182 | bfd *abfd = info->output_bfd; |
64615358 AM |
2183 | bfd_vma hi = htab->params->local_store_hi; |
2184 | bfd_vma lo = htab->params->local_store_lo; | |
c65be8d7 | 2185 | |
9dcc4794 | 2186 | htab->local_store = hi + 1 - lo; |
9dcc4794 | 2187 | |
12bd6957 | 2188 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
c65be8d7 AM |
2189 | if (m->p_type == PT_LOAD) |
2190 | for (i = 0; i < m->count; i++) | |
2191 | if (m->sections[i]->size != 0 | |
2192 | && (m->sections[i]->vma < lo | |
2193 | || m->sections[i]->vma > hi | |
2194 | || m->sections[i]->vma + m->sections[i]->size - 1 > hi)) | |
2195 | return m->sections[i]; | |
2196 | ||
2197 | return NULL; | |
2198 | } | |
2199 | ||
49fa1e15 | 2200 | /* OFFSET in SEC (presumably) is the beginning of a function prologue. |
cd4a7468 AM |
2201 | Search for stack adjusting insns, and return the sp delta. |
2202 | If a store of lr is found save the instruction offset to *LR_STORE. | |
2203 | If a stack adjusting instruction is found, save that offset to | |
2204 | *SP_ADJUST. */ | |
49fa1e15 AM |
2205 | |
2206 | static int | |
cd4a7468 AM |
2207 | find_function_stack_adjust (asection *sec, |
2208 | bfd_vma offset, | |
2209 | bfd_vma *lr_store, | |
2210 | bfd_vma *sp_adjust) | |
49fa1e15 | 2211 | { |
2d0ce677 | 2212 | int32_t reg[128]; |
49fa1e15 AM |
2213 | |
2214 | memset (reg, 0, sizeof (reg)); | |
667f3338 | 2215 | for ( ; offset + 4 <= sec->size; offset += 4) |
49fa1e15 AM |
2216 | { |
2217 | unsigned char buf[4]; | |
2218 | int rt, ra; | |
2d0ce677 | 2219 | uint32_t imm; |
49fa1e15 AM |
2220 | |
2221 | /* Assume no relocs on stack adjusing insns. */ | |
2222 | if (!bfd_get_section_contents (sec->owner, sec, buf, offset, 4)) | |
2223 | break; | |
2224 | ||
49fa1e15 AM |
2225 | rt = buf[3] & 0x7f; |
2226 | ra = ((buf[2] & 0x3f) << 1) | (buf[3] >> 7); | |
cd4a7468 AM |
2227 | |
2228 | if (buf[0] == 0x24 /* stqd */) | |
2229 | { | |
2230 | if (rt == 0 /* lr */ && ra == 1 /* sp */) | |
2231 | *lr_store = offset; | |
2232 | continue; | |
2233 | } | |
2234 | ||
49fa1e15 AM |
2235 | /* Partly decoded immediate field. */ |
2236 | imm = (buf[1] << 9) | (buf[2] << 1) | (buf[3] >> 7); | |
2237 | ||
2238 | if (buf[0] == 0x1c /* ai */) | |
2239 | { | |
2240 | imm >>= 7; | |
2241 | imm = (imm ^ 0x200) - 0x200; | |
2242 | reg[rt] = reg[ra] + imm; | |
2243 | ||
2244 | if (rt == 1 /* sp */) | |
2245 | { | |
667f3338 | 2246 | if (reg[rt] > 0) |
49fa1e15 | 2247 | break; |
cd4a7468 | 2248 | *sp_adjust = offset; |
49fa1e15 AM |
2249 | return reg[rt]; |
2250 | } | |
2251 | } | |
2252 | else if (buf[0] == 0x18 && (buf[1] & 0xe0) == 0 /* a */) | |
2253 | { | |
2254 | int rb = ((buf[1] & 0x1f) << 2) | ((buf[2] & 0xc0) >> 6); | |
2255 | ||
2256 | reg[rt] = reg[ra] + reg[rb]; | |
2257 | if (rt == 1) | |
667f3338 AM |
2258 | { |
2259 | if (reg[rt] > 0) | |
2260 | break; | |
cd4a7468 | 2261 | *sp_adjust = offset; |
667f3338 AM |
2262 | return reg[rt]; |
2263 | } | |
49fa1e15 | 2264 | } |
9b175a76 UW |
2265 | else if (buf[0] == 0x08 && (buf[1] & 0xe0) == 0 /* sf */) |
2266 | { | |
2267 | int rb = ((buf[1] & 0x1f) << 2) | ((buf[2] & 0xc0) >> 6); | |
2268 | ||
2269 | reg[rt] = reg[rb] - reg[ra]; | |
2270 | if (rt == 1) | |
2271 | { | |
2272 | if (reg[rt] > 0) | |
2273 | break; | |
2274 | *sp_adjust = offset; | |
2275 | return reg[rt]; | |
2276 | } | |
2277 | } | |
49fa1e15 AM |
2278 | else if ((buf[0] & 0xfc) == 0x40 /* il, ilh, ilhu, ila */) |
2279 | { | |
2280 | if (buf[0] >= 0x42 /* ila */) | |
2281 | imm |= (buf[0] & 1) << 17; | |
2282 | else | |
2283 | { | |
2284 | imm &= 0xffff; | |
2285 | ||
2286 | if (buf[0] == 0x40 /* il */) | |
2287 | { | |
2288 | if ((buf[1] & 0x80) == 0) | |
667f3338 | 2289 | continue; |
49fa1e15 AM |
2290 | imm = (imm ^ 0x8000) - 0x8000; |
2291 | } | |
2292 | else if ((buf[1] & 0x80) == 0 /* ilhu */) | |
2293 | imm <<= 16; | |
2294 | } | |
2295 | reg[rt] = imm; | |
2296 | continue; | |
2297 | } | |
2298 | else if (buf[0] == 0x60 && (buf[1] & 0x80) != 0 /* iohl */) | |
2299 | { | |
2300 | reg[rt] |= imm & 0xffff; | |
2301 | continue; | |
2302 | } | |
2303 | else if (buf[0] == 0x04 /* ori */) | |
2304 | { | |
2305 | imm >>= 7; | |
2306 | imm = (imm ^ 0x200) - 0x200; | |
2307 | reg[rt] = reg[ra] | imm; | |
2308 | continue; | |
2309 | } | |
667f3338 AM |
2310 | else if (buf[0] == 0x32 && (buf[1] & 0x80) != 0 /* fsmbi */) |
2311 | { | |
2312 | reg[rt] = ( ((imm & 0x8000) ? 0xff000000 : 0) | |
2313 | | ((imm & 0x4000) ? 0x00ff0000 : 0) | |
2314 | | ((imm & 0x2000) ? 0x0000ff00 : 0) | |
2315 | | ((imm & 0x1000) ? 0x000000ff : 0)); | |
2316 | continue; | |
2317 | } | |
2318 | else if (buf[0] == 0x16 /* andbi */) | |
49fa1e15 | 2319 | { |
667f3338 AM |
2320 | imm >>= 7; |
2321 | imm &= 0xff; | |
2322 | imm |= imm << 8; | |
2323 | imm |= imm << 16; | |
2324 | reg[rt] = reg[ra] & imm; | |
2325 | continue; | |
2326 | } | |
2327 | else if (buf[0] == 0x33 && imm == 1 /* brsl .+4 */) | |
2328 | { | |
2329 | /* Used in pic reg load. Say rt is trashed. Won't be used | |
2330 | in stack adjust, but we need to continue past this branch. */ | |
49fa1e15 AM |
2331 | reg[rt] = 0; |
2332 | continue; | |
2333 | } | |
fad9eaf0 | 2334 | else if (is_branch (buf) || is_indirect_branch (buf)) |
49fa1e15 AM |
2335 | /* If we hit a branch then we must be out of the prologue. */ |
2336 | break; | |
49fa1e15 AM |
2337 | } |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
2342 | /* qsort predicate to sort symbols by section and value. */ | |
2343 | ||
2344 | static Elf_Internal_Sym *sort_syms_syms; | |
2345 | static asection **sort_syms_psecs; | |
2346 | ||
2347 | static int | |
2348 | sort_syms (const void *a, const void *b) | |
2349 | { | |
2350 | Elf_Internal_Sym *const *s1 = a; | |
2351 | Elf_Internal_Sym *const *s2 = b; | |
2352 | asection *sec1,*sec2; | |
2353 | bfd_signed_vma delta; | |
2354 | ||
2355 | sec1 = sort_syms_psecs[*s1 - sort_syms_syms]; | |
2356 | sec2 = sort_syms_psecs[*s2 - sort_syms_syms]; | |
2357 | ||
2358 | if (sec1 != sec2) | |
2359 | return sec1->index - sec2->index; | |
2360 | ||
2361 | delta = (*s1)->st_value - (*s2)->st_value; | |
2362 | if (delta != 0) | |
2363 | return delta < 0 ? -1 : 1; | |
2364 | ||
2365 | delta = (*s2)->st_size - (*s1)->st_size; | |
2366 | if (delta != 0) | |
2367 | return delta < 0 ? -1 : 1; | |
2368 | ||
2369 | return *s1 < *s2 ? -1 : 1; | |
2370 | } | |
2371 | ||
49fa1e15 AM |
2372 | /* Allocate a struct spu_elf_stack_info with MAX_FUN struct function_info |
2373 | entries for section SEC. */ | |
2374 | ||
2375 | static struct spu_elf_stack_info * | |
2376 | alloc_stack_info (asection *sec, int max_fun) | |
2377 | { | |
2378 | struct _spu_elf_section_data *sec_data = spu_elf_section_data (sec); | |
2379 | bfd_size_type amt; | |
2380 | ||
2381 | amt = sizeof (struct spu_elf_stack_info); | |
2382 | amt += (max_fun - 1) * sizeof (struct function_info); | |
47f6dab9 AM |
2383 | sec_data->u.i.stack_info = bfd_zmalloc (amt); |
2384 | if (sec_data->u.i.stack_info != NULL) | |
2385 | sec_data->u.i.stack_info->max_fun = max_fun; | |
2386 | return sec_data->u.i.stack_info; | |
49fa1e15 AM |
2387 | } |
2388 | ||
2389 | /* Add a new struct function_info describing a (part of a) function | |
2390 | starting at SYM_H. Keep the array sorted by address. */ | |
2391 | ||
2392 | static struct function_info * | |
2393 | maybe_insert_function (asection *sec, | |
2394 | void *sym_h, | |
2395 | bfd_boolean global, | |
2396 | bfd_boolean is_func) | |
2397 | { | |
2398 | struct _spu_elf_section_data *sec_data = spu_elf_section_data (sec); | |
47f6dab9 | 2399 | struct spu_elf_stack_info *sinfo = sec_data->u.i.stack_info; |
49fa1e15 AM |
2400 | int i; |
2401 | bfd_vma off, size; | |
2402 | ||
2403 | if (sinfo == NULL) | |
2404 | { | |
2405 | sinfo = alloc_stack_info (sec, 20); | |
2406 | if (sinfo == NULL) | |
2407 | return NULL; | |
2408 | } | |
2409 | ||
2410 | if (!global) | |
2411 | { | |
2412 | Elf_Internal_Sym *sym = sym_h; | |
2413 | off = sym->st_value; | |
2414 | size = sym->st_size; | |
2415 | } | |
2416 | else | |
2417 | { | |
2418 | struct elf_link_hash_entry *h = sym_h; | |
2419 | off = h->root.u.def.value; | |
2420 | size = h->size; | |
2421 | } | |
2422 | ||
2423 | for (i = sinfo->num_fun; --i >= 0; ) | |
2424 | if (sinfo->fun[i].lo <= off) | |
2425 | break; | |
2426 | ||
2427 | if (i >= 0) | |
2428 | { | |
2429 | /* Don't add another entry for an alias, but do update some | |
2430 | info. */ | |
2431 | if (sinfo->fun[i].lo == off) | |
2432 | { | |
2433 | /* Prefer globals over local syms. */ | |
2434 | if (global && !sinfo->fun[i].global) | |
2435 | { | |
2436 | sinfo->fun[i].global = TRUE; | |
2437 | sinfo->fun[i].u.h = sym_h; | |
2438 | } | |
2439 | if (is_func) | |
2440 | sinfo->fun[i].is_func = TRUE; | |
2441 | return &sinfo->fun[i]; | |
2442 | } | |
2443 | /* Ignore a zero-size symbol inside an existing function. */ | |
2444 | else if (sinfo->fun[i].hi > off && size == 0) | |
2445 | return &sinfo->fun[i]; | |
2446 | } | |
2447 | ||
1f27ab8d | 2448 | if (sinfo->num_fun >= sinfo->max_fun) |
49fa1e15 AM |
2449 | { |
2450 | bfd_size_type amt = sizeof (struct spu_elf_stack_info); | |
2451 | bfd_size_type old = amt; | |
2452 | ||
2453 | old += (sinfo->max_fun - 1) * sizeof (struct function_info); | |
2454 | sinfo->max_fun += 20 + (sinfo->max_fun >> 1); | |
2455 | amt += (sinfo->max_fun - 1) * sizeof (struct function_info); | |
2456 | sinfo = bfd_realloc (sinfo, amt); | |
2457 | if (sinfo == NULL) | |
2458 | return NULL; | |
2459 | memset ((char *) sinfo + old, 0, amt - old); | |
47f6dab9 | 2460 | sec_data->u.i.stack_info = sinfo; |
49fa1e15 | 2461 | } |
1f27ab8d AM |
2462 | |
2463 | if (++i < sinfo->num_fun) | |
2464 | memmove (&sinfo->fun[i + 1], &sinfo->fun[i], | |
2465 | (sinfo->num_fun - i) * sizeof (sinfo->fun[i])); | |
49fa1e15 AM |
2466 | sinfo->fun[i].is_func = is_func; |
2467 | sinfo->fun[i].global = global; | |
2468 | sinfo->fun[i].sec = sec; | |
2469 | if (global) | |
2470 | sinfo->fun[i].u.h = sym_h; | |
2471 | else | |
2472 | sinfo->fun[i].u.sym = sym_h; | |
2473 | sinfo->fun[i].lo = off; | |
2474 | sinfo->fun[i].hi = off + size; | |
cd4a7468 AM |
2475 | sinfo->fun[i].lr_store = -1; |
2476 | sinfo->fun[i].sp_adjust = -1; | |
2477 | sinfo->fun[i].stack = -find_function_stack_adjust (sec, off, | |
2478 | &sinfo->fun[i].lr_store, | |
2479 | &sinfo->fun[i].sp_adjust); | |
49fa1e15 AM |
2480 | sinfo->num_fun += 1; |
2481 | return &sinfo->fun[i]; | |
2482 | } | |
2483 | ||
2484 | /* Return the name of FUN. */ | |
2485 | ||
2486 | static const char * | |
2487 | func_name (struct function_info *fun) | |
2488 | { | |
2489 | asection *sec; | |
2490 | bfd *ibfd; | |
2491 | Elf_Internal_Shdr *symtab_hdr; | |
2492 | ||
2493 | while (fun->start != NULL) | |
2494 | fun = fun->start; | |
2495 | ||
2496 | if (fun->global) | |
2497 | return fun->u.h->root.root.string; | |
2498 | ||
2499 | sec = fun->sec; | |
2500 | if (fun->u.sym->st_name == 0) | |
2501 | { | |
2502 | size_t len = strlen (sec->name); | |
2503 | char *name = bfd_malloc (len + 10); | |
2504 | if (name == NULL) | |
2505 | return "(null)"; | |
2506 | sprintf (name, "%s+%lx", sec->name, | |
2507 | (unsigned long) fun->u.sym->st_value & 0xffffffff); | |
2508 | return name; | |
2509 | } | |
2510 | ibfd = sec->owner; | |
2511 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2512 | return bfd_elf_sym_name (ibfd, symtab_hdr, fun->u.sym, sec); | |
2513 | } | |
2514 | ||
2515 | /* Read the instruction at OFF in SEC. Return true iff the instruction | |
2516 | is a nop, lnop, or stop 0 (all zero insn). */ | |
2517 | ||
2518 | static bfd_boolean | |
2519 | is_nop (asection *sec, bfd_vma off) | |
2520 | { | |
2521 | unsigned char insn[4]; | |
2522 | ||
2523 | if (off + 4 > sec->size | |
2524 | || !bfd_get_section_contents (sec->owner, sec, insn, off, 4)) | |
2525 | return FALSE; | |
2526 | if ((insn[0] & 0xbf) == 0 && (insn[1] & 0xe0) == 0x20) | |
2527 | return TRUE; | |
2528 | if (insn[0] == 0 && insn[1] == 0 && insn[2] == 0 && insn[3] == 0) | |
2529 | return TRUE; | |
2530 | return FALSE; | |
2531 | } | |
2532 | ||
2533 | /* Extend the range of FUN to cover nop padding up to LIMIT. | |
2534 | Return TRUE iff some instruction other than a NOP was found. */ | |
2535 | ||
2536 | static bfd_boolean | |
2537 | insns_at_end (struct function_info *fun, bfd_vma limit) | |
2538 | { | |
2539 | bfd_vma off = (fun->hi + 3) & -4; | |
2540 | ||
2541 | while (off < limit && is_nop (fun->sec, off)) | |
2542 | off += 4; | |
2543 | if (off < limit) | |
2544 | { | |
2545 | fun->hi = off; | |
2546 | return TRUE; | |
2547 | } | |
2548 | fun->hi = limit; | |
2549 | return FALSE; | |
2550 | } | |
2551 | ||
2552 | /* Check and fix overlapping function ranges. Return TRUE iff there | |
2553 | are gaps in the current info we have about functions in SEC. */ | |
2554 | ||
2555 | static bfd_boolean | |
2556 | check_function_ranges (asection *sec, struct bfd_link_info *info) | |
2557 | { | |
2558 | struct _spu_elf_section_data *sec_data = spu_elf_section_data (sec); | |
47f6dab9 | 2559 | struct spu_elf_stack_info *sinfo = sec_data->u.i.stack_info; |
49fa1e15 AM |
2560 | int i; |
2561 | bfd_boolean gaps = FALSE; | |
2562 | ||
2563 | if (sinfo == NULL) | |
2564 | return FALSE; | |
2565 | ||
2566 | for (i = 1; i < sinfo->num_fun; i++) | |
2567 | if (sinfo->fun[i - 1].hi > sinfo->fun[i].lo) | |
2568 | { | |
2569 | /* Fix overlapping symbols. */ | |
2570 | const char *f1 = func_name (&sinfo->fun[i - 1]); | |
2571 | const char *f2 = func_name (&sinfo->fun[i]); | |
2572 | ||
695344c0 | 2573 | /* xgettext:c-format */ |
49fa1e15 AM |
2574 | info->callbacks->einfo (_("warning: %s overlaps %s\n"), f1, f2); |
2575 | sinfo->fun[i - 1].hi = sinfo->fun[i].lo; | |
2576 | } | |
2577 | else if (insns_at_end (&sinfo->fun[i - 1], sinfo->fun[i].lo)) | |
2578 | gaps = TRUE; | |
2579 | ||
2580 | if (sinfo->num_fun == 0) | |
2581 | gaps = TRUE; | |
2582 | else | |
2583 | { | |
2584 | if (sinfo->fun[0].lo != 0) | |
2585 | gaps = TRUE; | |
2586 | if (sinfo->fun[sinfo->num_fun - 1].hi > sec->size) | |
2587 | { | |
2588 | const char *f1 = func_name (&sinfo->fun[sinfo->num_fun - 1]); | |
2589 | ||
2590 | info->callbacks->einfo (_("warning: %s exceeds section size\n"), f1); | |
2591 | sinfo->fun[sinfo->num_fun - 1].hi = sec->size; | |
2592 | } | |
2593 | else if (insns_at_end (&sinfo->fun[sinfo->num_fun - 1], sec->size)) | |
2594 | gaps = TRUE; | |
2595 | } | |
2596 | return gaps; | |
2597 | } | |
2598 | ||
2599 | /* Search current function info for a function that contains address | |
2600 | OFFSET in section SEC. */ | |
2601 | ||
2602 | static struct function_info * | |
2603 | find_function (asection *sec, bfd_vma offset, struct bfd_link_info *info) | |
2604 | { | |
2605 | struct _spu_elf_section_data *sec_data = spu_elf_section_data (sec); | |
47f6dab9 | 2606 | struct spu_elf_stack_info *sinfo = sec_data->u.i.stack_info; |
49fa1e15 AM |
2607 | int lo, hi, mid; |
2608 | ||
2609 | lo = 0; | |
2610 | hi = sinfo->num_fun; | |
2611 | while (lo < hi) | |
2612 | { | |
2613 | mid = (lo + hi) / 2; | |
2614 | if (offset < sinfo->fun[mid].lo) | |
2615 | hi = mid; | |
2616 | else if (offset >= sinfo->fun[mid].hi) | |
2617 | lo = mid + 1; | |
2618 | else | |
2619 | return &sinfo->fun[mid]; | |
2620 | } | |
695344c0 | 2621 | /* xgettext:c-format */ |
871b3ab2 | 2622 | info->callbacks->einfo (_("%pA:0x%v not found in function table\n"), |
49fa1e15 | 2623 | sec, offset); |
3209bffa | 2624 | bfd_set_error (bfd_error_bad_value); |
49fa1e15 AM |
2625 | return NULL; |
2626 | } | |
2627 | ||
9dcc4794 AM |
2628 | /* Add CALLEE to CALLER call list if not already present. Return TRUE |
2629 | if CALLEE was new. If this function return FALSE, CALLEE should | |
2630 | be freed. */ | |
49fa1e15 AM |
2631 | |
2632 | static bfd_boolean | |
2633 | insert_callee (struct function_info *caller, struct call_info *callee) | |
2634 | { | |
055ed83b AM |
2635 | struct call_info **pp, *p; |
2636 | ||
2637 | for (pp = &caller->call_list; (p = *pp) != NULL; pp = &p->next) | |
49fa1e15 AM |
2638 | if (p->fun == callee->fun) |
2639 | { | |
2640 | /* Tail calls use less stack than normal calls. Retain entry | |
2641 | for normal call over one for tail call. */ | |
c65be8d7 AM |
2642 | p->is_tail &= callee->is_tail; |
2643 | if (!p->is_tail) | |
2644 | { | |
2645 | p->fun->start = NULL; | |
2646 | p->fun->is_func = TRUE; | |
2647 | } | |
34ad4cb0 | 2648 | p->count += callee->count; |
055ed83b AM |
2649 | /* Reorder list so most recent call is first. */ |
2650 | *pp = p->next; | |
2651 | p->next = caller->call_list; | |
2652 | caller->call_list = p; | |
49fa1e15 AM |
2653 | return FALSE; |
2654 | } | |
2655 | callee->next = caller->call_list; | |
2656 | caller->call_list = callee; | |
2657 | return TRUE; | |
2658 | } | |
2659 | ||
9dcc4794 AM |
2660 | /* Copy CALL and insert the copy into CALLER. */ |
2661 | ||
2662 | static bfd_boolean | |
2663 | copy_callee (struct function_info *caller, const struct call_info *call) | |
2664 | { | |
2665 | struct call_info *callee; | |
2666 | callee = bfd_malloc (sizeof (*callee)); | |
2667 | if (callee == NULL) | |
2668 | return FALSE; | |
2669 | *callee = *call; | |
2670 | if (!insert_callee (caller, callee)) | |
2671 | free (callee); | |
2672 | return TRUE; | |
2673 | } | |
2674 | ||
055ed83b AM |
2675 | /* We're only interested in code sections. Testing SEC_IN_MEMORY excludes |
2676 | overlay stub sections. */ | |
2677 | ||
2678 | static bfd_boolean | |
64615358 | 2679 | interesting_section (asection *s) |
055ed83b | 2680 | { |
64615358 | 2681 | return (s->output_section != bfd_abs_section_ptr |
055ed83b AM |
2682 | && ((s->flags & (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_IN_MEMORY)) |
2683 | == (SEC_ALLOC | SEC_LOAD | SEC_CODE)) | |
2684 | && s->size != 0); | |
2685 | } | |
2686 | ||
49fa1e15 AM |
2687 | /* Rummage through the relocs for SEC, looking for function calls. |
2688 | If CALL_TREE is true, fill in call graph. If CALL_TREE is false, | |
2689 | mark destination symbols on calls as being functions. Also | |
2690 | look at branches, which may be tail calls or go to hot/cold | |
2691 | section part of same function. */ | |
2692 | ||
2693 | static bfd_boolean | |
2694 | mark_functions_via_relocs (asection *sec, | |
2695 | struct bfd_link_info *info, | |
2696 | int call_tree) | |
2697 | { | |
2698 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
2ec9638b | 2699 | Elf_Internal_Shdr *symtab_hdr; |
d0249648 | 2700 | void *psyms; |
cd4a7468 | 2701 | unsigned int priority = 0; |
49fa1e15 AM |
2702 | static bfd_boolean warned; |
2703 | ||
64615358 | 2704 | if (!interesting_section (sec) |
055ed83b AM |
2705 | || sec->reloc_count == 0) |
2706 | return TRUE; | |
2707 | ||
49fa1e15 AM |
2708 | internal_relocs = _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, |
2709 | info->keep_memory); | |
2710 | if (internal_relocs == NULL) | |
2711 | return FALSE; | |
2712 | ||
2713 | symtab_hdr = &elf_tdata (sec->owner)->symtab_hdr; | |
d0249648 | 2714 | psyms = &symtab_hdr->contents; |
49fa1e15 AM |
2715 | irela = internal_relocs; |
2716 | irelaend = irela + sec->reloc_count; | |
2717 | for (; irela < irelaend; irela++) | |
2718 | { | |
2719 | enum elf_spu_reloc_type r_type; | |
2720 | unsigned int r_indx; | |
2721 | asection *sym_sec; | |
2722 | Elf_Internal_Sym *sym; | |
2723 | struct elf_link_hash_entry *h; | |
2724 | bfd_vma val; | |
6567fa84 | 2725 | bfd_boolean nonbranch, is_call; |
49fa1e15 AM |
2726 | struct function_info *caller; |
2727 | struct call_info *callee; | |
2728 | ||
2729 | r_type = ELF32_R_TYPE (irela->r_info); | |
6567fa84 | 2730 | nonbranch = r_type != R_SPU_REL16 && r_type != R_SPU_ADDR16; |
49fa1e15 AM |
2731 | |
2732 | r_indx = ELF32_R_SYM (irela->r_info); | |
2733 | if (!get_sym_h (&h, &sym, &sym_sec, psyms, r_indx, sec->owner)) | |
2734 | return FALSE; | |
2735 | ||
2736 | if (sym_sec == NULL | |
64615358 | 2737 | || sym_sec->output_section == bfd_abs_section_ptr) |
49fa1e15 AM |
2738 | continue; |
2739 | ||
9dcc4794 | 2740 | is_call = FALSE; |
6567fa84 | 2741 | if (!nonbranch) |
9dcc4794 AM |
2742 | { |
2743 | unsigned char insn[4]; | |
2744 | ||
2745 | if (!bfd_get_section_contents (sec->owner, sec, insn, | |
2746 | irela->r_offset, 4)) | |
2747 | return FALSE; | |
2748 | if (is_branch (insn)) | |
2749 | { | |
2750 | is_call = (insn[0] & 0xfd) == 0x31; | |
cd4a7468 AM |
2751 | priority = insn[1] & 0x0f; |
2752 | priority <<= 8; | |
2753 | priority |= insn[2]; | |
2754 | priority <<= 8; | |
2755 | priority |= insn[3]; | |
2756 | priority >>= 7; | |
9dcc4794 AM |
2757 | if ((sym_sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_CODE)) |
2758 | != (SEC_ALLOC | SEC_LOAD | SEC_CODE)) | |
2759 | { | |
2760 | if (!warned) | |
2761 | info->callbacks->einfo | |
695344c0 | 2762 | /* xgettext:c-format */ |
871b3ab2 AM |
2763 | (_("%pB(%pA+0x%v): call to non-code section" |
2764 | " %pB(%pA), analysis incomplete\n"), | |
9dcc4794 AM |
2765 | sec->owner, sec, irela->r_offset, |
2766 | sym_sec->owner, sym_sec); | |
2767 | warned = TRUE; | |
2768 | continue; | |
2769 | } | |
2770 | } | |
2771 | else | |
2772 | { | |
6567fa84 UW |
2773 | nonbranch = TRUE; |
2774 | if (is_hint (insn)) | |
9dcc4794 AM |
2775 | continue; |
2776 | } | |
2777 | } | |
49fa1e15 | 2778 | |
6567fa84 | 2779 | if (nonbranch) |
49fa1e15 | 2780 | { |
9dcc4794 AM |
2781 | /* For --auto-overlay, count possible stubs we need for |
2782 | function pointer references. */ | |
2783 | unsigned int sym_type; | |
2784 | if (h) | |
2785 | sym_type = h->type; | |
2786 | else | |
2787 | sym_type = ELF_ST_TYPE (sym->st_info); | |
2788 | if (sym_type == STT_FUNC) | |
6567fa84 UW |
2789 | { |
2790 | if (call_tree && spu_hash_table (info)->params->auto_overlay) | |
2791 | spu_hash_table (info)->non_ovly_stub += 1; | |
2792 | /* If the symbol type is STT_FUNC then this must be a | |
2793 | function pointer initialisation. */ | |
2794 | continue; | |
2795 | } | |
2796 | /* Ignore data references. */ | |
2797 | if ((sym_sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_CODE)) | |
2798 | != (SEC_ALLOC | SEC_LOAD | SEC_CODE)) | |
2799 | continue; | |
2800 | /* Otherwise we probably have a jump table reloc for | |
2801 | a switch statement or some other reference to a | |
2802 | code label. */ | |
49fa1e15 AM |
2803 | } |
2804 | ||
49fa1e15 AM |
2805 | if (h) |
2806 | val = h->root.u.def.value; | |
2807 | else | |
2808 | val = sym->st_value; | |
2809 | val += irela->r_addend; | |
2810 | ||
2811 | if (!call_tree) | |
2812 | { | |
2813 | struct function_info *fun; | |
2814 | ||
2815 | if (irela->r_addend != 0) | |
2816 | { | |
2817 | Elf_Internal_Sym *fake = bfd_zmalloc (sizeof (*fake)); | |
2818 | if (fake == NULL) | |
2819 | return FALSE; | |
2820 | fake->st_value = val; | |
2821 | fake->st_shndx | |
2822 | = _bfd_elf_section_from_bfd_section (sym_sec->owner, sym_sec); | |
2823 | sym = fake; | |
2824 | } | |
2825 | if (sym) | |
2826 | fun = maybe_insert_function (sym_sec, sym, FALSE, is_call); | |
2827 | else | |
2828 | fun = maybe_insert_function (sym_sec, h, TRUE, is_call); | |
2829 | if (fun == NULL) | |
2830 | return FALSE; | |
2831 | if (irela->r_addend != 0 | |
2832 | && fun->u.sym != sym) | |
2833 | free (sym); | |
2834 | continue; | |
2835 | } | |
2836 | ||
2837 | caller = find_function (sec, irela->r_offset, info); | |
2838 | if (caller == NULL) | |
2839 | return FALSE; | |
2840 | callee = bfd_malloc (sizeof *callee); | |
2841 | if (callee == NULL) | |
2842 | return FALSE; | |
2843 | ||
2844 | callee->fun = find_function (sym_sec, val, info); | |
2845 | if (callee->fun == NULL) | |
2846 | return FALSE; | |
2847 | callee->is_tail = !is_call; | |
9dcc4794 | 2848 | callee->is_pasted = FALSE; |
9c4d0c1f | 2849 | callee->broken_cycle = FALSE; |
cd4a7468 | 2850 | callee->priority = priority; |
6567fa84 | 2851 | callee->count = nonbranch? 0 : 1; |
9dcc4794 AM |
2852 | if (callee->fun->last_caller != sec) |
2853 | { | |
2854 | callee->fun->last_caller = sec; | |
2855 | callee->fun->call_count += 1; | |
2856 | } | |
49fa1e15 AM |
2857 | if (!insert_callee (caller, callee)) |
2858 | free (callee); | |
2859 | else if (!is_call | |
2860 | && !callee->fun->is_func | |
2861 | && callee->fun->stack == 0) | |
2862 | { | |
2863 | /* This is either a tail call or a branch from one part of | |
2864 | the function to another, ie. hot/cold section. If the | |
2865 | destination has been called by some other function then | |
2866 | it is a separate function. We also assume that functions | |
2867 | are not split across input files. */ | |
911f096e | 2868 | if (sec->owner != sym_sec->owner) |
49fa1e15 AM |
2869 | { |
2870 | callee->fun->start = NULL; | |
2871 | callee->fun->is_func = TRUE; | |
2872 | } | |
911f096e | 2873 | else if (callee->fun->start == NULL) |
cc210763 UW |
2874 | { |
2875 | struct function_info *caller_start = caller; | |
2876 | while (caller_start->start) | |
2877 | caller_start = caller_start->start; | |
2878 | ||
2879 | if (caller_start != callee->fun) | |
2880 | callee->fun->start = caller_start; | |
2881 | } | |
911f096e AM |
2882 | else |
2883 | { | |
2884 | struct function_info *callee_start; | |
2885 | struct function_info *caller_start; | |
2886 | callee_start = callee->fun; | |
2887 | while (callee_start->start) | |
2888 | callee_start = callee_start->start; | |
2889 | caller_start = caller; | |
2890 | while (caller_start->start) | |
2891 | caller_start = caller_start->start; | |
2892 | if (caller_start != callee_start) | |
2893 | { | |
2894 | callee->fun->start = NULL; | |
2895 | callee->fun->is_func = TRUE; | |
2896 | } | |
2897 | } | |
49fa1e15 AM |
2898 | } |
2899 | } | |
2900 | ||
2901 | return TRUE; | |
2902 | } | |
2903 | ||
2904 | /* Handle something like .init or .fini, which has a piece of a function. | |
2905 | These sections are pasted together to form a single function. */ | |
2906 | ||
2907 | static bfd_boolean | |
3209bffa | 2908 | pasted_function (asection *sec) |
49fa1e15 AM |
2909 | { |
2910 | struct bfd_link_order *l; | |
2911 | struct _spu_elf_section_data *sec_data; | |
2912 | struct spu_elf_stack_info *sinfo; | |
2913 | Elf_Internal_Sym *fake; | |
2914 | struct function_info *fun, *fun_start; | |
2915 | ||
2916 | fake = bfd_zmalloc (sizeof (*fake)); | |
2917 | if (fake == NULL) | |
2918 | return FALSE; | |
2919 | fake->st_value = 0; | |
2920 | fake->st_size = sec->size; | |
2921 | fake->st_shndx | |
2922 | = _bfd_elf_section_from_bfd_section (sec->owner, sec); | |
2923 | fun = maybe_insert_function (sec, fake, FALSE, FALSE); | |
2924 | if (!fun) | |
2925 | return FALSE; | |
2926 | ||
2927 | /* Find a function immediately preceding this section. */ | |
2928 | fun_start = NULL; | |
2929 | for (l = sec->output_section->map_head.link_order; l != NULL; l = l->next) | |
2930 | { | |
2931 | if (l->u.indirect.section == sec) | |
2932 | { | |
2933 | if (fun_start != NULL) | |
9dcc4794 AM |
2934 | { |
2935 | struct call_info *callee = bfd_malloc (sizeof *callee); | |
2936 | if (callee == NULL) | |
2937 | return FALSE; | |
2938 | ||
2939 | fun->start = fun_start; | |
2940 | callee->fun = fun; | |
2941 | callee->is_tail = TRUE; | |
2942 | callee->is_pasted = TRUE; | |
9c4d0c1f AM |
2943 | callee->broken_cycle = FALSE; |
2944 | callee->priority = 0; | |
34ad4cb0 | 2945 | callee->count = 1; |
9dcc4794 AM |
2946 | if (!insert_callee (fun_start, callee)) |
2947 | free (callee); | |
2948 | return TRUE; | |
2949 | } | |
2950 | break; | |
49fa1e15 AM |
2951 | } |
2952 | if (l->type == bfd_indirect_link_order | |
2953 | && (sec_data = spu_elf_section_data (l->u.indirect.section)) != NULL | |
47f6dab9 | 2954 | && (sinfo = sec_data->u.i.stack_info) != NULL |
49fa1e15 AM |
2955 | && sinfo->num_fun != 0) |
2956 | fun_start = &sinfo->fun[sinfo->num_fun - 1]; | |
2957 | } | |
2958 | ||
3209bffa AM |
2959 | /* Don't return an error if we did not find a function preceding this |
2960 | section. The section may have incorrect flags. */ | |
2961 | return TRUE; | |
49fa1e15 AM |
2962 | } |
2963 | ||
49fa1e15 AM |
2964 | /* Map address ranges in code sections to functions. */ |
2965 | ||
2966 | static bfd_boolean | |
c65be8d7 | 2967 | discover_functions (struct bfd_link_info *info) |
49fa1e15 | 2968 | { |
49fa1e15 AM |
2969 | bfd *ibfd; |
2970 | int bfd_idx; | |
2971 | Elf_Internal_Sym ***psym_arr; | |
2972 | asection ***sec_arr; | |
2973 | bfd_boolean gaps = FALSE; | |
2974 | ||
2975 | bfd_idx = 0; | |
c72f2fb2 | 2976 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
49fa1e15 AM |
2977 | bfd_idx++; |
2978 | ||
2979 | psym_arr = bfd_zmalloc (bfd_idx * sizeof (*psym_arr)); | |
2980 | if (psym_arr == NULL) | |
2981 | return FALSE; | |
2982 | sec_arr = bfd_zmalloc (bfd_idx * sizeof (*sec_arr)); | |
2983 | if (sec_arr == NULL) | |
2984 | return FALSE; | |
68ffbac6 | 2985 | |
49fa1e15 AM |
2986 | for (ibfd = info->input_bfds, bfd_idx = 0; |
2987 | ibfd != NULL; | |
c72f2fb2 | 2988 | ibfd = ibfd->link.next, bfd_idx++) |
49fa1e15 | 2989 | { |
6d00b590 | 2990 | extern const bfd_target spu_elf32_vec; |
49fa1e15 AM |
2991 | Elf_Internal_Shdr *symtab_hdr; |
2992 | asection *sec; | |
2993 | size_t symcount; | |
2994 | Elf_Internal_Sym *syms, *sy, **psyms, **psy; | |
2995 | asection **psecs, **p; | |
2996 | ||
6d00b590 | 2997 | if (ibfd->xvec != &spu_elf32_vec) |
49fa1e15 AM |
2998 | continue; |
2999 | ||
3000 | /* Read all the symbols. */ | |
3001 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3002 | symcount = symtab_hdr->sh_size / symtab_hdr->sh_entsize; | |
3003 | if (symcount == 0) | |
055ed83b AM |
3004 | { |
3005 | if (!gaps) | |
3006 | for (sec = ibfd->sections; sec != NULL && !gaps; sec = sec->next) | |
64615358 | 3007 | if (interesting_section (sec)) |
055ed83b AM |
3008 | { |
3009 | gaps = TRUE; | |
3010 | break; | |
3011 | } | |
3012 | continue; | |
3013 | } | |
49fa1e15 | 3014 | |
c9594989 AM |
3015 | /* Don't use cached symbols since the generic ELF linker |
3016 | code only reads local symbols, and we need globals too. */ | |
3017 | free (symtab_hdr->contents); | |
3018 | symtab_hdr->contents = NULL; | |
1f27ab8d AM |
3019 | syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, symcount, 0, |
3020 | NULL, NULL, NULL); | |
3021 | symtab_hdr->contents = (void *) syms; | |
3022 | if (syms == NULL) | |
3023 | return FALSE; | |
49fa1e15 AM |
3024 | |
3025 | /* Select defined function symbols that are going to be output. */ | |
3026 | psyms = bfd_malloc ((symcount + 1) * sizeof (*psyms)); | |
3027 | if (psyms == NULL) | |
3028 | return FALSE; | |
3029 | psym_arr[bfd_idx] = psyms; | |
3030 | psecs = bfd_malloc (symcount * sizeof (*psecs)); | |
3031 | if (psecs == NULL) | |
3032 | return FALSE; | |
3033 | sec_arr[bfd_idx] = psecs; | |
3034 | for (psy = psyms, p = psecs, sy = syms; sy < syms + symcount; ++p, ++sy) | |
3035 | if (ELF_ST_TYPE (sy->st_info) == STT_NOTYPE | |
3209bffa | 3036 | || ELF_ST_TYPE (sy->st_info) == STT_FUNC) |
49fa1e15 AM |
3037 | { |
3038 | asection *s; | |
3039 | ||
3040 | *p = s = bfd_section_from_elf_index (ibfd, sy->st_shndx); | |
64615358 | 3041 | if (s != NULL && interesting_section (s)) |
49fa1e15 AM |
3042 | *psy++ = sy; |
3043 | } | |
3044 | symcount = psy - psyms; | |
3045 | *psy = NULL; | |
3046 | ||
3047 | /* Sort them by section and offset within section. */ | |
3048 | sort_syms_syms = syms; | |
3049 | sort_syms_psecs = psecs; | |
3050 | qsort (psyms, symcount, sizeof (*psyms), sort_syms); | |
3051 | ||
3052 | /* Now inspect the function symbols. */ | |
3053 | for (psy = psyms; psy < psyms + symcount; ) | |
3054 | { | |
3055 | asection *s = psecs[*psy - syms]; | |
3056 | Elf_Internal_Sym **psy2; | |
3057 | ||
3058 | for (psy2 = psy; ++psy2 < psyms + symcount; ) | |
3059 | if (psecs[*psy2 - syms] != s) | |
3060 | break; | |
3061 | ||
3062 | if (!alloc_stack_info (s, psy2 - psy)) | |
3063 | return FALSE; | |
3064 | psy = psy2; | |
3065 | } | |
3066 | ||
3067 | /* First install info about properly typed and sized functions. | |
3068 | In an ideal world this will cover all code sections, except | |
3069 | when partitioning functions into hot and cold sections, | |
3070 | and the horrible pasted together .init and .fini functions. */ | |
3071 | for (psy = psyms; psy < psyms + symcount; ++psy) | |
3072 | { | |
3073 | sy = *psy; | |
3074 | if (ELF_ST_TYPE (sy->st_info) == STT_FUNC) | |
3075 | { | |
3076 | asection *s = psecs[sy - syms]; | |
3077 | if (!maybe_insert_function (s, sy, FALSE, TRUE)) | |
3078 | return FALSE; | |
3079 | } | |
3080 | } | |
3081 | ||
3082 | for (sec = ibfd->sections; sec != NULL && !gaps; sec = sec->next) | |
64615358 | 3083 | if (interesting_section (sec)) |
49fa1e15 AM |
3084 | gaps |= check_function_ranges (sec, info); |
3085 | } | |
3086 | ||
3087 | if (gaps) | |
3088 | { | |
3089 | /* See if we can discover more function symbols by looking at | |
3090 | relocations. */ | |
3091 | for (ibfd = info->input_bfds, bfd_idx = 0; | |
3092 | ibfd != NULL; | |
c72f2fb2 | 3093 | ibfd = ibfd->link.next, bfd_idx++) |
49fa1e15 AM |
3094 | { |
3095 | asection *sec; | |
3096 | ||
3097 | if (psym_arr[bfd_idx] == NULL) | |
3098 | continue; | |
3099 | ||
3100 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
055ed83b AM |
3101 | if (!mark_functions_via_relocs (sec, info, FALSE)) |
3102 | return FALSE; | |
49fa1e15 AM |
3103 | } |
3104 | ||
3105 | for (ibfd = info->input_bfds, bfd_idx = 0; | |
3106 | ibfd != NULL; | |
c72f2fb2 | 3107 | ibfd = ibfd->link.next, bfd_idx++) |
49fa1e15 AM |
3108 | { |
3109 | Elf_Internal_Shdr *symtab_hdr; | |
3110 | asection *sec; | |
3111 | Elf_Internal_Sym *syms, *sy, **psyms, **psy; | |
3112 | asection **psecs; | |
3113 | ||
3114 | if ((psyms = psym_arr[bfd_idx]) == NULL) | |
3115 | continue; | |
3116 | ||
3117 | psecs = sec_arr[bfd_idx]; | |
3118 | ||
3119 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3120 | syms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
3121 | ||
3122 | gaps = FALSE; | |
3123 | for (sec = ibfd->sections; sec != NULL && !gaps; sec = sec->next) | |
64615358 | 3124 | if (interesting_section (sec)) |
49fa1e15 AM |
3125 | gaps |= check_function_ranges (sec, info); |
3126 | if (!gaps) | |
3127 | continue; | |
3128 | ||
3129 | /* Finally, install all globals. */ | |
3130 | for (psy = psyms; (sy = *psy) != NULL; ++psy) | |
3131 | { | |
3132 | asection *s; | |
3133 | ||
3134 | s = psecs[sy - syms]; | |
3135 | ||
3136 | /* Global syms might be improperly typed functions. */ | |
3137 | if (ELF_ST_TYPE (sy->st_info) != STT_FUNC | |
3138 | && ELF_ST_BIND (sy->st_info) == STB_GLOBAL) | |
3139 | { | |
3140 | if (!maybe_insert_function (s, sy, FALSE, FALSE)) | |
3141 | return FALSE; | |
3142 | } | |
3143 | } | |
055ed83b AM |
3144 | } |
3145 | ||
c72f2fb2 | 3146 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
055ed83b | 3147 | { |
6d00b590 | 3148 | extern const bfd_target spu_elf32_vec; |
055ed83b AM |
3149 | asection *sec; |
3150 | ||
6d00b590 | 3151 | if (ibfd->xvec != &spu_elf32_vec) |
055ed83b | 3152 | continue; |
49fa1e15 AM |
3153 | |
3154 | /* Some of the symbols we've installed as marking the | |
3155 | beginning of functions may have a size of zero. Extend | |
3156 | the range of such functions to the beginning of the | |
3157 | next symbol of interest. */ | |
3158 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
64615358 | 3159 | if (interesting_section (sec)) |
49fa1e15 AM |
3160 | { |
3161 | struct _spu_elf_section_data *sec_data; | |
3162 | struct spu_elf_stack_info *sinfo; | |
3163 | ||
3164 | sec_data = spu_elf_section_data (sec); | |
47f6dab9 | 3165 | sinfo = sec_data->u.i.stack_info; |
3209bffa | 3166 | if (sinfo != NULL && sinfo->num_fun != 0) |
49fa1e15 AM |
3167 | { |
3168 | int fun_idx; | |
3169 | bfd_vma hi = sec->size; | |
3170 | ||
3171 | for (fun_idx = sinfo->num_fun; --fun_idx >= 0; ) | |
3172 | { | |
3173 | sinfo->fun[fun_idx].hi = hi; | |
3174 | hi = sinfo->fun[fun_idx].lo; | |
3175 | } | |
3209bffa AM |
3176 | |
3177 | sinfo->fun[0].lo = 0; | |
49fa1e15 AM |
3178 | } |
3179 | /* No symbols in this section. Must be .init or .fini | |
3180 | or something similar. */ | |
3209bffa | 3181 | else if (!pasted_function (sec)) |
49fa1e15 AM |
3182 | return FALSE; |
3183 | } | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | for (ibfd = info->input_bfds, bfd_idx = 0; | |
3188 | ibfd != NULL; | |
c72f2fb2 | 3189 | ibfd = ibfd->link.next, bfd_idx++) |
49fa1e15 AM |
3190 | { |
3191 | if (psym_arr[bfd_idx] == NULL) | |
3192 | continue; | |
3193 | ||
3194 | free (psym_arr[bfd_idx]); | |
3195 | free (sec_arr[bfd_idx]); | |
3196 | } | |
3197 | ||
3198 | free (psym_arr); | |
3199 | free (sec_arr); | |
3200 | ||
3201 | return TRUE; | |
3202 | } | |
3203 | ||
055ed83b AM |
3204 | /* Iterate over all function_info we have collected, calling DOIT on |
3205 | each node if ROOT_ONLY is false. Only call DOIT on root nodes | |
3206 | if ROOT_ONLY. */ | |
3207 | ||
3208 | static bfd_boolean | |
3209 | for_each_node (bfd_boolean (*doit) (struct function_info *, | |
3210 | struct bfd_link_info *, | |
3211 | void *), | |
3212 | struct bfd_link_info *info, | |
3213 | void *param, | |
3214 | int root_only) | |
3215 | { | |
3216 | bfd *ibfd; | |
3217 | ||
c72f2fb2 | 3218 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
055ed83b | 3219 | { |
6d00b590 | 3220 | extern const bfd_target spu_elf32_vec; |
055ed83b AM |
3221 | asection *sec; |
3222 | ||
6d00b590 | 3223 | if (ibfd->xvec != &spu_elf32_vec) |
055ed83b AM |
3224 | continue; |
3225 | ||
3226 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
3227 | { | |
3228 | struct _spu_elf_section_data *sec_data; | |
3229 | struct spu_elf_stack_info *sinfo; | |
3230 | ||
3231 | if ((sec_data = spu_elf_section_data (sec)) != NULL | |
3232 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3233 | { | |
3234 | int i; | |
3235 | for (i = 0; i < sinfo->num_fun; ++i) | |
3236 | if (!root_only || !sinfo->fun[i].non_root) | |
3237 | if (!doit (&sinfo->fun[i], info, param)) | |
3238 | return FALSE; | |
3239 | } | |
3240 | } | |
3241 | } | |
3242 | return TRUE; | |
3243 | } | |
3244 | ||
3245 | /* Transfer call info attached to struct function_info entries for | |
3246 | all of a given function's sections to the first entry. */ | |
3247 | ||
3248 | static bfd_boolean | |
3249 | transfer_calls (struct function_info *fun, | |
3250 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3251 | void *param ATTRIBUTE_UNUSED) | |
3252 | { | |
3253 | struct function_info *start = fun->start; | |
3254 | ||
3255 | if (start != NULL) | |
3256 | { | |
3257 | struct call_info *call, *call_next; | |
3258 | ||
3259 | while (start->start != NULL) | |
3260 | start = start->start; | |
3261 | for (call = fun->call_list; call != NULL; call = call_next) | |
3262 | { | |
3263 | call_next = call->next; | |
3264 | if (!insert_callee (start, call)) | |
3265 | free (call); | |
3266 | } | |
3267 | fun->call_list = NULL; | |
3268 | } | |
3269 | return TRUE; | |
3270 | } | |
3271 | ||
49fa1e15 AM |
3272 | /* Mark nodes in the call graph that are called by some other node. */ |
3273 | ||
055ed83b AM |
3274 | static bfd_boolean |
3275 | mark_non_root (struct function_info *fun, | |
3276 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3277 | void *param ATTRIBUTE_UNUSED) | |
49fa1e15 AM |
3278 | { |
3279 | struct call_info *call; | |
3280 | ||
055ed83b AM |
3281 | if (fun->visit1) |
3282 | return TRUE; | |
49fa1e15 AM |
3283 | fun->visit1 = TRUE; |
3284 | for (call = fun->call_list; call; call = call->next) | |
3285 | { | |
3286 | call->fun->non_root = TRUE; | |
055ed83b | 3287 | mark_non_root (call->fun, 0, 0); |
49fa1e15 | 3288 | } |
055ed83b | 3289 | return TRUE; |
49fa1e15 AM |
3290 | } |
3291 | ||
9dcc4794 | 3292 | /* Remove cycles from the call graph. Set depth of nodes. */ |
49fa1e15 | 3293 | |
055ed83b AM |
3294 | static bfd_boolean |
3295 | remove_cycles (struct function_info *fun, | |
3296 | struct bfd_link_info *info, | |
9dcc4794 | 3297 | void *param) |
49fa1e15 AM |
3298 | { |
3299 | struct call_info **callp, *call; | |
9dcc4794 AM |
3300 | unsigned int depth = *(unsigned int *) param; |
3301 | unsigned int max_depth = depth; | |
49fa1e15 | 3302 | |
9dcc4794 | 3303 | fun->depth = depth; |
49fa1e15 AM |
3304 | fun->visit2 = TRUE; |
3305 | fun->marking = TRUE; | |
3306 | ||
3307 | callp = &fun->call_list; | |
3308 | while ((call = *callp) != NULL) | |
3309 | { | |
25076afa | 3310 | call->max_depth = depth + !call->is_pasted; |
49fa1e15 | 3311 | if (!call->fun->visit2) |
055ed83b | 3312 | { |
9dcc4794 | 3313 | if (!remove_cycles (call->fun, info, &call->max_depth)) |
055ed83b | 3314 | return FALSE; |
9dcc4794 AM |
3315 | if (max_depth < call->max_depth) |
3316 | max_depth = call->max_depth; | |
055ed83b | 3317 | } |
49fa1e15 AM |
3318 | else if (call->fun->marking) |
3319 | { | |
cd4a7468 AM |
3320 | struct spu_link_hash_table *htab = spu_hash_table (info); |
3321 | ||
3322 | if (!htab->params->auto_overlay | |
3323 | && htab->params->stack_analysis) | |
9dcc4794 AM |
3324 | { |
3325 | const char *f1 = func_name (fun); | |
3326 | const char *f2 = func_name (call->fun); | |
49fa1e15 | 3327 | |
695344c0 | 3328 | /* xgettext:c-format */ |
38f14ab8 | 3329 | info->callbacks->info (_("stack analysis will ignore the call " |
9dcc4794 AM |
3330 | "from %s to %s\n"), |
3331 | f1, f2); | |
3332 | } | |
5ebe2858 UW |
3333 | |
3334 | call->broken_cycle = TRUE; | |
49fa1e15 AM |
3335 | } |
3336 | callp = &call->next; | |
3337 | } | |
3338 | fun->marking = FALSE; | |
9dcc4794 | 3339 | *(unsigned int *) param = max_depth; |
055ed83b | 3340 | return TRUE; |
49fa1e15 AM |
3341 | } |
3342 | ||
667f3338 AM |
3343 | /* Check that we actually visited all nodes in remove_cycles. If we |
3344 | didn't, then there is some cycle in the call graph not attached to | |
3345 | any root node. Arbitrarily choose a node in the cycle as a new | |
3346 | root and break the cycle. */ | |
3347 | ||
3348 | static bfd_boolean | |
3349 | mark_detached_root (struct function_info *fun, | |
3350 | struct bfd_link_info *info, | |
3351 | void *param) | |
3352 | { | |
3353 | if (fun->visit2) | |
3354 | return TRUE; | |
3355 | fun->non_root = FALSE; | |
3356 | *(unsigned int *) param = 0; | |
3357 | return remove_cycles (fun, info, param); | |
3358 | } | |
3359 | ||
49fa1e15 AM |
3360 | /* Populate call_list for each function. */ |
3361 | ||
3362 | static bfd_boolean | |
c65be8d7 | 3363 | build_call_tree (struct bfd_link_info *info) |
49fa1e15 | 3364 | { |
49fa1e15 | 3365 | bfd *ibfd; |
9dcc4794 | 3366 | unsigned int depth; |
49fa1e15 | 3367 | |
c72f2fb2 | 3368 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
49fa1e15 | 3369 | { |
6d00b590 | 3370 | extern const bfd_target spu_elf32_vec; |
49fa1e15 AM |
3371 | asection *sec; |
3372 | ||
6d00b590 | 3373 | if (ibfd->xvec != &spu_elf32_vec) |
49fa1e15 AM |
3374 | continue; |
3375 | ||
3376 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
055ed83b AM |
3377 | if (!mark_functions_via_relocs (sec, info, TRUE)) |
3378 | return FALSE; | |
49fa1e15 AM |
3379 | } |
3380 | ||
055ed83b AM |
3381 | /* Transfer call info from hot/cold section part of function |
3382 | to main entry. */ | |
64615358 | 3383 | if (!spu_hash_table (info)->params->auto_overlay |
9dcc4794 | 3384 | && !for_each_node (transfer_calls, info, 0, FALSE)) |
055ed83b | 3385 | return FALSE; |
49fa1e15 | 3386 | |
055ed83b AM |
3387 | /* Find the call graph root(s). */ |
3388 | if (!for_each_node (mark_non_root, info, 0, FALSE)) | |
3389 | return FALSE; | |
49fa1e15 AM |
3390 | |
3391 | /* Remove cycles from the call graph. We start from the root node(s) | |
3392 | so that we break cycles in a reasonable place. */ | |
9dcc4794 | 3393 | depth = 0; |
667f3338 AM |
3394 | if (!for_each_node (remove_cycles, info, &depth, TRUE)) |
3395 | return FALSE; | |
3396 | ||
3397 | return for_each_node (mark_detached_root, info, &depth, FALSE); | |
9dcc4794 AM |
3398 | } |
3399 | ||
cd4a7468 | 3400 | /* qsort predicate to sort calls by priority, max_depth then count. */ |
9dcc4794 AM |
3401 | |
3402 | static int | |
3403 | sort_calls (const void *a, const void *b) | |
3404 | { | |
3405 | struct call_info *const *c1 = a; | |
3406 | struct call_info *const *c2 = b; | |
3407 | int delta; | |
3408 | ||
cd4a7468 AM |
3409 | delta = (*c2)->priority - (*c1)->priority; |
3410 | if (delta != 0) | |
3411 | return delta; | |
3412 | ||
9dcc4794 AM |
3413 | delta = (*c2)->max_depth - (*c1)->max_depth; |
3414 | if (delta != 0) | |
3415 | return delta; | |
3416 | ||
3417 | delta = (*c2)->count - (*c1)->count; | |
3418 | if (delta != 0) | |
3419 | return delta; | |
3420 | ||
667f3338 | 3421 | return (char *) c1 - (char *) c2; |
9dcc4794 AM |
3422 | } |
3423 | ||
3424 | struct _mos_param { | |
3425 | unsigned int max_overlay_size; | |
3426 | }; | |
3427 | ||
3428 | /* Set linker_mark and gc_mark on any sections that we will put in | |
3429 | overlays. These flags are used by the generic ELF linker, but we | |
3430 | won't be continuing on to bfd_elf_final_link so it is OK to use | |
3431 | them. linker_mark is clear before we get here. Set segment_mark | |
3432 | on sections that are part of a pasted function (excluding the last | |
3433 | section). | |
3434 | ||
3435 | Set up function rodata section if --overlay-rodata. We don't | |
3436 | currently include merged string constant rodata sections since | |
3437 | ||
3438 | Sort the call graph so that the deepest nodes will be visited | |
3439 | first. */ | |
3440 | ||
3441 | static bfd_boolean | |
3442 | mark_overlay_section (struct function_info *fun, | |
3443 | struct bfd_link_info *info, | |
3444 | void *param) | |
3445 | { | |
3446 | struct call_info *call; | |
3447 | unsigned int count; | |
3448 | struct _mos_param *mos_param = param; | |
fb266b8b | 3449 | struct spu_link_hash_table *htab = spu_hash_table (info); |
9dcc4794 AM |
3450 | |
3451 | if (fun->visit4) | |
3452 | return TRUE; | |
3453 | ||
3454 | fun->visit4 = TRUE; | |
fb266b8b AM |
3455 | if (!fun->sec->linker_mark |
3456 | && (htab->params->ovly_flavour != ovly_soft_icache | |
3457 | || htab->params->non_ia_text | |
335bd8f2 UW |
3458 | || strncmp (fun->sec->name, ".text.ia.", 9) == 0 |
3459 | || strcmp (fun->sec->name, ".init") == 0 | |
3460 | || strcmp (fun->sec->name, ".fini") == 0)) | |
9dcc4794 | 3461 | { |
4f0d75be AM |
3462 | unsigned int size; |
3463 | ||
9dcc4794 AM |
3464 | fun->sec->linker_mark = 1; |
3465 | fun->sec->gc_mark = 1; | |
3466 | fun->sec->segment_mark = 0; | |
3467 | /* Ensure SEC_CODE is set on this text section (it ought to | |
3468 | be!), and SEC_CODE is clear on rodata sections. We use | |
3469 | this flag to differentiate the two overlay section types. */ | |
3470 | fun->sec->flags |= SEC_CODE; | |
4f0d75be | 3471 | |
fb266b8b AM |
3472 | size = fun->sec->size; |
3473 | if (htab->params->auto_overlay & OVERLAY_RODATA) | |
9dcc4794 AM |
3474 | { |
3475 | char *name = NULL; | |
9dcc4794 AM |
3476 | |
3477 | /* Find the rodata section corresponding to this function's | |
3478 | text section. */ | |
3479 | if (strcmp (fun->sec->name, ".text") == 0) | |
3480 | { | |
3481 | name = bfd_malloc (sizeof (".rodata")); | |
3482 | if (name == NULL) | |
3483 | return FALSE; | |
3484 | memcpy (name, ".rodata", sizeof (".rodata")); | |
3485 | } | |
3486 | else if (strncmp (fun->sec->name, ".text.", 6) == 0) | |
3487 | { | |
3488 | size_t len = strlen (fun->sec->name); | |
3489 | name = bfd_malloc (len + 3); | |
3490 | if (name == NULL) | |
3491 | return FALSE; | |
3492 | memcpy (name, ".rodata", sizeof (".rodata")); | |
3493 | memcpy (name + 7, fun->sec->name + 5, len - 4); | |
3494 | } | |
3495 | else if (strncmp (fun->sec->name, ".gnu.linkonce.t.", 16) == 0) | |
3496 | { | |
3497 | size_t len = strlen (fun->sec->name) + 1; | |
3498 | name = bfd_malloc (len); | |
3499 | if (name == NULL) | |
3500 | return FALSE; | |
3501 | memcpy (name, fun->sec->name, len); | |
3502 | name[14] = 'r'; | |
3503 | } | |
3504 | ||
3505 | if (name != NULL) | |
3506 | { | |
3507 | asection *rodata = NULL; | |
3508 | asection *group_sec = elf_section_data (fun->sec)->next_in_group; | |
3509 | if (group_sec == NULL) | |
3510 | rodata = bfd_get_section_by_name (fun->sec->owner, name); | |
3511 | else | |
3512 | while (group_sec != NULL && group_sec != fun->sec) | |
3513 | { | |
3514 | if (strcmp (group_sec->name, name) == 0) | |
3515 | { | |
3516 | rodata = group_sec; | |
3517 | break; | |
3518 | } | |
3519 | group_sec = elf_section_data (group_sec)->next_in_group; | |
3520 | } | |
3521 | fun->rodata = rodata; | |
3522 | if (fun->rodata) | |
3523 | { | |
fb266b8b AM |
3524 | size += fun->rodata->size; |
3525 | if (htab->params->line_size != 0 | |
3526 | && size > htab->params->line_size) | |
3527 | { | |
3528 | size -= fun->rodata->size; | |
3529 | fun->rodata = NULL; | |
3530 | } | |
3531 | else | |
3532 | { | |
3533 | fun->rodata->linker_mark = 1; | |
3534 | fun->rodata->gc_mark = 1; | |
3535 | fun->rodata->flags &= ~SEC_CODE; | |
3536 | } | |
9dcc4794 AM |
3537 | } |
3538 | free (name); | |
3539 | } | |
9dcc4794 | 3540 | } |
4f0d75be AM |
3541 | if (mos_param->max_overlay_size < size) |
3542 | mos_param->max_overlay_size = size; | |
9dcc4794 AM |
3543 | } |
3544 | ||
3545 | for (count = 0, call = fun->call_list; call != NULL; call = call->next) | |
3546 | count += 1; | |
3547 | ||
3548 | if (count > 1) | |
3549 | { | |
3550 | struct call_info **calls = bfd_malloc (count * sizeof (*calls)); | |
3551 | if (calls == NULL) | |
3552 | return FALSE; | |
3553 | ||
3554 | for (count = 0, call = fun->call_list; call != NULL; call = call->next) | |
3555 | calls[count++] = call; | |
3556 | ||
3557 | qsort (calls, count, sizeof (*calls), sort_calls); | |
3558 | ||
3559 | fun->call_list = NULL; | |
3560 | while (count != 0) | |
3561 | { | |
3562 | --count; | |
3563 | calls[count]->next = fun->call_list; | |
3564 | fun->call_list = calls[count]; | |
3565 | } | |
3566 | free (calls); | |
3567 | } | |
3568 | ||
3569 | for (call = fun->call_list; call != NULL; call = call->next) | |
3570 | { | |
3571 | if (call->is_pasted) | |
3572 | { | |
3573 | /* There can only be one is_pasted call per function_info. */ | |
3574 | BFD_ASSERT (!fun->sec->segment_mark); | |
3575 | fun->sec->segment_mark = 1; | |
3576 | } | |
5ebe2858 UW |
3577 | if (!call->broken_cycle |
3578 | && !mark_overlay_section (call->fun, info, param)) | |
9dcc4794 AM |
3579 | return FALSE; |
3580 | } | |
3581 | ||
3582 | /* Don't put entry code into an overlay. The overlay manager needs | |
cd4a7468 | 3583 | a stack! Also, don't mark .ovl.init as an overlay. */ |
9dcc4794 | 3584 | if (fun->lo + fun->sec->output_offset + fun->sec->output_section->vma |
cd4a7468 AM |
3585 | == info->output_bfd->start_address |
3586 | || strncmp (fun->sec->output_section->name, ".ovl.init", 9) == 0) | |
9dcc4794 AM |
3587 | { |
3588 | fun->sec->linker_mark = 0; | |
3589 | if (fun->rodata != NULL) | |
3590 | fun->rodata->linker_mark = 0; | |
3591 | } | |
3592 | return TRUE; | |
3593 | } | |
3594 | ||
99302af9 AM |
3595 | /* If non-zero then unmark functions called from those within sections |
3596 | that we need to unmark. Unfortunately this isn't reliable since the | |
3597 | call graph cannot know the destination of function pointer calls. */ | |
3598 | #define RECURSE_UNMARK 0 | |
3599 | ||
9dcc4794 AM |
3600 | struct _uos_param { |
3601 | asection *exclude_input_section; | |
3602 | asection *exclude_output_section; | |
3603 | unsigned long clearing; | |
3604 | }; | |
3605 | ||
3606 | /* Undo some of mark_overlay_section's work. */ | |
3607 | ||
3608 | static bfd_boolean | |
3609 | unmark_overlay_section (struct function_info *fun, | |
3610 | struct bfd_link_info *info, | |
3611 | void *param) | |
3612 | { | |
3613 | struct call_info *call; | |
3614 | struct _uos_param *uos_param = param; | |
3615 | unsigned int excluded = 0; | |
3616 | ||
3617 | if (fun->visit5) | |
3618 | return TRUE; | |
3619 | ||
3620 | fun->visit5 = TRUE; | |
3621 | ||
3622 | excluded = 0; | |
3623 | if (fun->sec == uos_param->exclude_input_section | |
3624 | || fun->sec->output_section == uos_param->exclude_output_section) | |
3625 | excluded = 1; | |
3626 | ||
99302af9 AM |
3627 | if (RECURSE_UNMARK) |
3628 | uos_param->clearing += excluded; | |
9dcc4794 | 3629 | |
99302af9 | 3630 | if (RECURSE_UNMARK ? uos_param->clearing : excluded) |
9dcc4794 AM |
3631 | { |
3632 | fun->sec->linker_mark = 0; | |
3633 | if (fun->rodata) | |
3634 | fun->rodata->linker_mark = 0; | |
3635 | } | |
3636 | ||
3637 | for (call = fun->call_list; call != NULL; call = call->next) | |
5ebe2858 UW |
3638 | if (!call->broken_cycle |
3639 | && !unmark_overlay_section (call->fun, info, param)) | |
9dcc4794 AM |
3640 | return FALSE; |
3641 | ||
99302af9 AM |
3642 | if (RECURSE_UNMARK) |
3643 | uos_param->clearing -= excluded; | |
9dcc4794 AM |
3644 | return TRUE; |
3645 | } | |
3646 | ||
3647 | struct _cl_param { | |
3648 | unsigned int lib_size; | |
3649 | asection **lib_sections; | |
3650 | }; | |
3651 | ||
3652 | /* Add sections we have marked as belonging to overlays to an array | |
3653 | for consideration as non-overlay sections. The array consist of | |
3654 | pairs of sections, (text,rodata), for functions in the call graph. */ | |
3655 | ||
3656 | static bfd_boolean | |
3657 | collect_lib_sections (struct function_info *fun, | |
3658 | struct bfd_link_info *info, | |
3659 | void *param) | |
3660 | { | |
3661 | struct _cl_param *lib_param = param; | |
3662 | struct call_info *call; | |
3663 | unsigned int size; | |
3664 | ||
3665 | if (fun->visit6) | |
3666 | return TRUE; | |
3667 | ||
3668 | fun->visit6 = TRUE; | |
3669 | if (!fun->sec->linker_mark || !fun->sec->gc_mark || fun->sec->segment_mark) | |
3670 | return TRUE; | |
3671 | ||
3672 | size = fun->sec->size; | |
3673 | if (fun->rodata) | |
3674 | size += fun->rodata->size; | |
cd4a7468 | 3675 | |
b0c41709 | 3676 | if (size <= lib_param->lib_size) |
9dcc4794 | 3677 | { |
b0c41709 AM |
3678 | *lib_param->lib_sections++ = fun->sec; |
3679 | fun->sec->gc_mark = 0; | |
3680 | if (fun->rodata && fun->rodata->linker_mark && fun->rodata->gc_mark) | |
3681 | { | |
3682 | *lib_param->lib_sections++ = fun->rodata; | |
3683 | fun->rodata->gc_mark = 0; | |
3684 | } | |
3685 | else | |
3686 | *lib_param->lib_sections++ = NULL; | |
9dcc4794 | 3687 | } |
9dcc4794 AM |
3688 | |
3689 | for (call = fun->call_list; call != NULL; call = call->next) | |
5ebe2858 UW |
3690 | if (!call->broken_cycle) |
3691 | collect_lib_sections (call->fun, info, param); | |
9dcc4794 AM |
3692 | |
3693 | return TRUE; | |
3694 | } | |
3695 | ||
3696 | /* qsort predicate to sort sections by call count. */ | |
3697 | ||
3698 | static int | |
3699 | sort_lib (const void *a, const void *b) | |
3700 | { | |
3701 | asection *const *s1 = a; | |
3702 | asection *const *s2 = b; | |
3703 | struct _spu_elf_section_data *sec_data; | |
3704 | struct spu_elf_stack_info *sinfo; | |
3705 | int delta; | |
3706 | ||
3707 | delta = 0; | |
3708 | if ((sec_data = spu_elf_section_data (*s1)) != NULL | |
3709 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3710 | { | |
3711 | int i; | |
3712 | for (i = 0; i < sinfo->num_fun; ++i) | |
3713 | delta -= sinfo->fun[i].call_count; | |
3714 | } | |
3715 | ||
3716 | if ((sec_data = spu_elf_section_data (*s2)) != NULL | |
3717 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3718 | { | |
3719 | int i; | |
3720 | for (i = 0; i < sinfo->num_fun; ++i) | |
3721 | delta += sinfo->fun[i].call_count; | |
3722 | } | |
3723 | ||
3724 | if (delta != 0) | |
3725 | return delta; | |
3726 | ||
3727 | return s1 - s2; | |
3728 | } | |
3729 | ||
3730 | /* Remove some sections from those marked to be in overlays. Choose | |
3731 | those that are called from many places, likely library functions. */ | |
3732 | ||
3733 | static unsigned int | |
3734 | auto_ovl_lib_functions (struct bfd_link_info *info, unsigned int lib_size) | |
3735 | { | |
3736 | bfd *ibfd; | |
3737 | asection **lib_sections; | |
3738 | unsigned int i, lib_count; | |
3739 | struct _cl_param collect_lib_param; | |
3740 | struct function_info dummy_caller; | |
64615358 | 3741 | struct spu_link_hash_table *htab; |
9dcc4794 AM |
3742 | |
3743 | memset (&dummy_caller, 0, sizeof (dummy_caller)); | |
3744 | lib_count = 0; | |
c72f2fb2 | 3745 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9dcc4794 | 3746 | { |
6d00b590 | 3747 | extern const bfd_target spu_elf32_vec; |
9dcc4794 AM |
3748 | asection *sec; |
3749 | ||
6d00b590 | 3750 | if (ibfd->xvec != &spu_elf32_vec) |
9dcc4794 AM |
3751 | continue; |
3752 | ||
3753 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
3754 | if (sec->linker_mark | |
3755 | && sec->size < lib_size | |
3756 | && (sec->flags & SEC_CODE) != 0) | |
3757 | lib_count += 1; | |
3758 | } | |
3759 | lib_sections = bfd_malloc (lib_count * 2 * sizeof (*lib_sections)); | |
3760 | if (lib_sections == NULL) | |
3761 | return (unsigned int) -1; | |
3762 | collect_lib_param.lib_size = lib_size; | |
3763 | collect_lib_param.lib_sections = lib_sections; | |
3764 | if (!for_each_node (collect_lib_sections, info, &collect_lib_param, | |
3765 | TRUE)) | |
3766 | return (unsigned int) -1; | |
3767 | lib_count = (collect_lib_param.lib_sections - lib_sections) / 2; | |
3768 | ||
3769 | /* Sort sections so that those with the most calls are first. */ | |
3770 | if (lib_count > 1) | |
3771 | qsort (lib_sections, lib_count, 2 * sizeof (*lib_sections), sort_lib); | |
3772 | ||
64615358 | 3773 | htab = spu_hash_table (info); |
9dcc4794 AM |
3774 | for (i = 0; i < lib_count; i++) |
3775 | { | |
3776 | unsigned int tmp, stub_size; | |
3777 | asection *sec; | |
3778 | struct _spu_elf_section_data *sec_data; | |
3779 | struct spu_elf_stack_info *sinfo; | |
3780 | ||
3781 | sec = lib_sections[2 * i]; | |
3782 | /* If this section is OK, its size must be less than lib_size. */ | |
3783 | tmp = sec->size; | |
3784 | /* If it has a rodata section, then add that too. */ | |
3785 | if (lib_sections[2 * i + 1]) | |
3786 | tmp += lib_sections[2 * i + 1]->size; | |
3787 | /* Add any new overlay call stubs needed by the section. */ | |
3788 | stub_size = 0; | |
3789 | if (tmp < lib_size | |
3790 | && (sec_data = spu_elf_section_data (sec)) != NULL | |
3791 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3792 | { | |
3793 | int k; | |
3794 | struct call_info *call; | |
3795 | ||
3796 | for (k = 0; k < sinfo->num_fun; ++k) | |
3797 | for (call = sinfo->fun[k].call_list; call; call = call->next) | |
3798 | if (call->fun->sec->linker_mark) | |
3799 | { | |
3800 | struct call_info *p; | |
3801 | for (p = dummy_caller.call_list; p; p = p->next) | |
3802 | if (p->fun == call->fun) | |
3803 | break; | |
3804 | if (!p) | |
a7e11ee1 | 3805 | stub_size += ovl_stub_size (htab->params); |
9dcc4794 AM |
3806 | } |
3807 | } | |
3808 | if (tmp + stub_size < lib_size) | |
3809 | { | |
3810 | struct call_info **pp, *p; | |
3811 | ||
3812 | /* This section fits. Mark it as non-overlay. */ | |
3813 | lib_sections[2 * i]->linker_mark = 0; | |
3814 | if (lib_sections[2 * i + 1]) | |
3815 | lib_sections[2 * i + 1]->linker_mark = 0; | |
3816 | lib_size -= tmp + stub_size; | |
3817 | /* Call stubs to the section we just added are no longer | |
3818 | needed. */ | |
3819 | pp = &dummy_caller.call_list; | |
3820 | while ((p = *pp) != NULL) | |
3821 | if (!p->fun->sec->linker_mark) | |
3822 | { | |
a7e11ee1 | 3823 | lib_size += ovl_stub_size (htab->params); |
9dcc4794 AM |
3824 | *pp = p->next; |
3825 | free (p); | |
3826 | } | |
3827 | else | |
3828 | pp = &p->next; | |
3829 | /* Add new call stubs to dummy_caller. */ | |
3830 | if ((sec_data = spu_elf_section_data (sec)) != NULL | |
3831 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3832 | { | |
3833 | int k; | |
3834 | struct call_info *call; | |
3835 | ||
3836 | for (k = 0; k < sinfo->num_fun; ++k) | |
3837 | for (call = sinfo->fun[k].call_list; | |
3838 | call; | |
3839 | call = call->next) | |
3840 | if (call->fun->sec->linker_mark) | |
3841 | { | |
3842 | struct call_info *callee; | |
3843 | callee = bfd_malloc (sizeof (*callee)); | |
3844 | if (callee == NULL) | |
3845 | return (unsigned int) -1; | |
3846 | *callee = *call; | |
3847 | if (!insert_callee (&dummy_caller, callee)) | |
3848 | free (callee); | |
3849 | } | |
3850 | } | |
3851 | } | |
3852 | } | |
3853 | while (dummy_caller.call_list != NULL) | |
3854 | { | |
3855 | struct call_info *call = dummy_caller.call_list; | |
3856 | dummy_caller.call_list = call->next; | |
3857 | free (call); | |
3858 | } | |
3859 | for (i = 0; i < 2 * lib_count; i++) | |
3860 | if (lib_sections[i]) | |
3861 | lib_sections[i]->gc_mark = 1; | |
3862 | free (lib_sections); | |
3863 | return lib_size; | |
3864 | } | |
3865 | ||
3866 | /* Build an array of overlay sections. The deepest node's section is | |
2ec9638b | 3867 | added first, then its parent node's section, then everything called |
9dcc4794 AM |
3868 | from the parent section. The idea being to group sections to |
3869 | minimise calls between different overlays. */ | |
3870 | ||
3871 | static bfd_boolean | |
3872 | collect_overlays (struct function_info *fun, | |
3873 | struct bfd_link_info *info, | |
3874 | void *param) | |
3875 | { | |
3876 | struct call_info *call; | |
3877 | bfd_boolean added_fun; | |
3878 | asection ***ovly_sections = param; | |
3879 | ||
3880 | if (fun->visit7) | |
3881 | return TRUE; | |
3882 | ||
3883 | fun->visit7 = TRUE; | |
3884 | for (call = fun->call_list; call != NULL; call = call->next) | |
5ebe2858 | 3885 | if (!call->is_pasted && !call->broken_cycle) |
9dcc4794 AM |
3886 | { |
3887 | if (!collect_overlays (call->fun, info, ovly_sections)) | |
3888 | return FALSE; | |
3889 | break; | |
3890 | } | |
3891 | ||
3892 | added_fun = FALSE; | |
3893 | if (fun->sec->linker_mark && fun->sec->gc_mark) | |
3894 | { | |
3895 | fun->sec->gc_mark = 0; | |
3896 | *(*ovly_sections)++ = fun->sec; | |
3897 | if (fun->rodata && fun->rodata->linker_mark && fun->rodata->gc_mark) | |
3898 | { | |
3899 | fun->rodata->gc_mark = 0; | |
3900 | *(*ovly_sections)++ = fun->rodata; | |
3901 | } | |
3902 | else | |
3903 | *(*ovly_sections)++ = NULL; | |
3904 | added_fun = TRUE; | |
3905 | ||
3906 | /* Pasted sections must stay with the first section. We don't | |
3907 | put pasted sections in the array, just the first section. | |
3908 | Mark subsequent sections as already considered. */ | |
3909 | if (fun->sec->segment_mark) | |
3910 | { | |
3911 | struct function_info *call_fun = fun; | |
3912 | do | |
3913 | { | |
3914 | for (call = call_fun->call_list; call != NULL; call = call->next) | |
3915 | if (call->is_pasted) | |
3916 | { | |
3917 | call_fun = call->fun; | |
3918 | call_fun->sec->gc_mark = 0; | |
3919 | if (call_fun->rodata) | |
3920 | call_fun->rodata->gc_mark = 0; | |
3921 | break; | |
3922 | } | |
3923 | if (call == NULL) | |
3924 | abort (); | |
3925 | } | |
3926 | while (call_fun->sec->segment_mark); | |
3927 | } | |
3928 | } | |
3929 | ||
3930 | for (call = fun->call_list; call != NULL; call = call->next) | |
5ebe2858 UW |
3931 | if (!call->broken_cycle |
3932 | && !collect_overlays (call->fun, info, ovly_sections)) | |
9dcc4794 AM |
3933 | return FALSE; |
3934 | ||
3935 | if (added_fun) | |
3936 | { | |
3937 | struct _spu_elf_section_data *sec_data; | |
3938 | struct spu_elf_stack_info *sinfo; | |
3939 | ||
3940 | if ((sec_data = spu_elf_section_data (fun->sec)) != NULL | |
3941 | && (sinfo = sec_data->u.i.stack_info) != NULL) | |
3942 | { | |
3943 | int i; | |
3944 | for (i = 0; i < sinfo->num_fun; ++i) | |
3945 | if (!collect_overlays (&sinfo->fun[i], info, ovly_sections)) | |
3946 | return FALSE; | |
3947 | } | |
3948 | } | |
3949 | ||
3950 | return TRUE; | |
49fa1e15 AM |
3951 | } |
3952 | ||
055ed83b AM |
3953 | struct _sum_stack_param { |
3954 | size_t cum_stack; | |
3955 | size_t overall_stack; | |
3956 | bfd_boolean emit_stack_syms; | |
3957 | }; | |
3958 | ||
49fa1e15 AM |
3959 | /* Descend the call graph for FUN, accumulating total stack required. */ |
3960 | ||
055ed83b | 3961 | static bfd_boolean |
49fa1e15 AM |
3962 | sum_stack (struct function_info *fun, |
3963 | struct bfd_link_info *info, | |
055ed83b | 3964 | void *param) |
49fa1e15 AM |
3965 | { |
3966 | struct call_info *call; | |
055ed83b AM |
3967 | struct function_info *max; |
3968 | size_t stack, cum_stack; | |
49fa1e15 | 3969 | const char *f1; |
9dcc4794 | 3970 | bfd_boolean has_call; |
055ed83b | 3971 | struct _sum_stack_param *sum_stack_param = param; |
9dcc4794 | 3972 | struct spu_link_hash_table *htab; |
49fa1e15 | 3973 | |
055ed83b AM |
3974 | cum_stack = fun->stack; |
3975 | sum_stack_param->cum_stack = cum_stack; | |
49fa1e15 | 3976 | if (fun->visit3) |
055ed83b | 3977 | return TRUE; |
49fa1e15 | 3978 | |
9dcc4794 | 3979 | has_call = FALSE; |
055ed83b | 3980 | max = NULL; |
49fa1e15 AM |
3981 | for (call = fun->call_list; call; call = call->next) |
3982 | { | |
5ebe2858 UW |
3983 | if (call->broken_cycle) |
3984 | continue; | |
9dcc4794 AM |
3985 | if (!call->is_pasted) |
3986 | has_call = TRUE; | |
055ed83b AM |
3987 | if (!sum_stack (call->fun, info, sum_stack_param)) |
3988 | return FALSE; | |
3989 | stack = sum_stack_param->cum_stack; | |
49fa1e15 AM |
3990 | /* Include caller stack for normal calls, don't do so for |
3991 | tail calls. fun->stack here is local stack usage for | |
3992 | this function. */ | |
9dcc4794 | 3993 | if (!call->is_tail || call->is_pasted || call->fun->start != NULL) |
49fa1e15 | 3994 | stack += fun->stack; |
055ed83b | 3995 | if (cum_stack < stack) |
49fa1e15 | 3996 | { |
055ed83b | 3997 | cum_stack = stack; |
49fa1e15 AM |
3998 | max = call->fun; |
3999 | } | |
4000 | } | |
4001 | ||
055ed83b AM |
4002 | sum_stack_param->cum_stack = cum_stack; |
4003 | stack = fun->stack; | |
4004 | /* Now fun->stack holds cumulative stack. */ | |
4005 | fun->stack = cum_stack; | |
4006 | fun->visit3 = TRUE; | |
4007 | ||
4008 | if (!fun->non_root | |
4009 | && sum_stack_param->overall_stack < cum_stack) | |
4010 | sum_stack_param->overall_stack = cum_stack; | |
4011 | ||
9dcc4794 | 4012 | htab = spu_hash_table (info); |
64615358 | 4013 | if (htab->params->auto_overlay) |
9dcc4794 AM |
4014 | return TRUE; |
4015 | ||
49fa1e15 | 4016 | f1 = func_name (fun); |
cd4a7468 | 4017 | if (htab->params->stack_analysis) |
49fa1e15 | 4018 | { |
cd4a7468 | 4019 | if (!fun->non_root) |
695344c0 NC |
4020 | info->callbacks->info (" %s: 0x%v\n", f1, (bfd_vma) cum_stack); |
4021 | info->callbacks->minfo ("%s: 0x%v 0x%v\n", | |
cd4a7468 | 4022 | f1, (bfd_vma) stack, (bfd_vma) cum_stack); |
49fa1e15 | 4023 | |
cd4a7468 AM |
4024 | if (has_call) |
4025 | { | |
4026 | info->callbacks->minfo (_(" calls:\n")); | |
4027 | for (call = fun->call_list; call; call = call->next) | |
5ebe2858 | 4028 | if (!call->is_pasted && !call->broken_cycle) |
cd4a7468 AM |
4029 | { |
4030 | const char *f2 = func_name (call->fun); | |
4031 | const char *ann1 = call->fun == max ? "*" : " "; | |
4032 | const char *ann2 = call->is_tail ? "t" : " "; | |
4033 | ||
695344c0 | 4034 | info->callbacks->minfo (" %s%s %s\n", ann1, ann2, f2); |
cd4a7468 AM |
4035 | } |
4036 | } | |
49fa1e15 AM |
4037 | } |
4038 | ||
055ed83b | 4039 | if (sum_stack_param->emit_stack_syms) |
49fa1e15 | 4040 | { |
49fa1e15 AM |
4041 | char *name = bfd_malloc (18 + strlen (f1)); |
4042 | struct elf_link_hash_entry *h; | |
4043 | ||
055ed83b AM |
4044 | if (name == NULL) |
4045 | return FALSE; | |
4046 | ||
4047 | if (fun->global || ELF_ST_BIND (fun->u.sym->st_info) == STB_GLOBAL) | |
4048 | sprintf (name, "__stack_%s", f1); | |
4049 | else | |
4050 | sprintf (name, "__stack_%x_%s", fun->sec->id & 0xffffffff, f1); | |
4051 | ||
4052 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, TRUE, FALSE); | |
4053 | free (name); | |
4054 | if (h != NULL | |
4055 | && (h->root.type == bfd_link_hash_new | |
4056 | || h->root.type == bfd_link_hash_undefined | |
4057 | || h->root.type == bfd_link_hash_undefweak)) | |
49fa1e15 | 4058 | { |
055ed83b AM |
4059 | h->root.type = bfd_link_hash_defined; |
4060 | h->root.u.def.section = bfd_abs_section_ptr; | |
4061 | h->root.u.def.value = cum_stack; | |
4062 | h->size = 0; | |
4063 | h->type = 0; | |
4064 | h->ref_regular = 1; | |
4065 | h->def_regular = 1; | |
4066 | h->ref_regular_nonweak = 1; | |
4067 | h->forced_local = 1; | |
4068 | h->non_elf = 0; | |
49fa1e15 AM |
4069 | } |
4070 | } | |
4071 | ||
055ed83b | 4072 | return TRUE; |
49fa1e15 AM |
4073 | } |
4074 | ||
9dcc4794 AM |
4075 | /* SEC is part of a pasted function. Return the call_info for the |
4076 | next section of this function. */ | |
4077 | ||
4078 | static struct call_info * | |
4079 | find_pasted_call (asection *sec) | |
4080 | { | |
4081 | struct _spu_elf_section_data *sec_data = spu_elf_section_data (sec); | |
4082 | struct spu_elf_stack_info *sinfo = sec_data->u.i.stack_info; | |
4083 | struct call_info *call; | |
4084 | int k; | |
4085 | ||
4086 | for (k = 0; k < sinfo->num_fun; ++k) | |
4087 | for (call = sinfo->fun[k].call_list; call != NULL; call = call->next) | |
4088 | if (call->is_pasted) | |
4089 | return call; | |
4090 | abort (); | |
4091 | return 0; | |
4092 | } | |
4093 | ||
4094 | /* qsort predicate to sort bfds by file name. */ | |
4095 | ||
4096 | static int | |
4097 | sort_bfds (const void *a, const void *b) | |
4098 | { | |
4099 | bfd *const *abfd1 = a; | |
4100 | bfd *const *abfd2 = b; | |
4101 | ||
765cf5f6 | 4102 | return filename_cmp (bfd_get_filename (*abfd1), bfd_get_filename (*abfd2)); |
9dcc4794 AM |
4103 | } |
4104 | ||
cd4a7468 AM |
4105 | static unsigned int |
4106 | print_one_overlay_section (FILE *script, | |
4107 | unsigned int base, | |
4108 | unsigned int count, | |
4109 | unsigned int ovlynum, | |
4110 | unsigned int *ovly_map, | |
4111 | asection **ovly_sections, | |
4112 | struct bfd_link_info *info) | |
4113 | { | |
4114 | unsigned int j; | |
68ffbac6 | 4115 | |
cd4a7468 AM |
4116 | for (j = base; j < count && ovly_map[j] == ovlynum; j++) |
4117 | { | |
4118 | asection *sec = ovly_sections[2 * j]; | |
4119 | ||
4120 | if (fprintf (script, " %s%c%s (%s)\n", | |
4121 | (sec->owner->my_archive != NULL | |
765cf5f6 | 4122 | ? bfd_get_filename (sec->owner->my_archive) : ""), |
cd4a7468 | 4123 | info->path_separator, |
765cf5f6 | 4124 | bfd_get_filename (sec->owner), |
cd4a7468 AM |
4125 | sec->name) <= 0) |
4126 | return -1; | |
4127 | if (sec->segment_mark) | |
4128 | { | |
4129 | struct call_info *call = find_pasted_call (sec); | |
4130 | while (call != NULL) | |
4131 | { | |
4132 | struct function_info *call_fun = call->fun; | |
4133 | sec = call_fun->sec; | |
4134 | if (fprintf (script, " %s%c%s (%s)\n", | |
4135 | (sec->owner->my_archive != NULL | |
765cf5f6 | 4136 | ? bfd_get_filename (sec->owner->my_archive) : ""), |
cd4a7468 | 4137 | info->path_separator, |
765cf5f6 | 4138 | bfd_get_filename (sec->owner), |
cd4a7468 AM |
4139 | sec->name) <= 0) |
4140 | return -1; | |
4141 | for (call = call_fun->call_list; call; call = call->next) | |
4142 | if (call->is_pasted) | |
4143 | break; | |
4144 | } | |
4145 | } | |
4146 | } | |
4147 | ||
4148 | for (j = base; j < count && ovly_map[j] == ovlynum; j++) | |
4149 | { | |
4150 | asection *sec = ovly_sections[2 * j + 1]; | |
4151 | if (sec != NULL | |
4152 | && fprintf (script, " %s%c%s (%s)\n", | |
4153 | (sec->owner->my_archive != NULL | |
765cf5f6 | 4154 | ? bfd_get_filename (sec->owner->my_archive) : ""), |
cd4a7468 | 4155 | info->path_separator, |
765cf5f6 | 4156 | bfd_get_filename (sec->owner), |
cd4a7468 AM |
4157 | sec->name) <= 0) |
4158 | return -1; | |
4159 | ||
4160 | sec = ovly_sections[2 * j]; | |
4161 | if (sec->segment_mark) | |
4162 | { | |
4163 | struct call_info *call = find_pasted_call (sec); | |
4164 | while (call != NULL) | |
4165 | { | |
4166 | struct function_info *call_fun = call->fun; | |
4167 | sec = call_fun->rodata; | |
4168 | if (sec != NULL | |
4169 | && fprintf (script, " %s%c%s (%s)\n", | |
4170 | (sec->owner->my_archive != NULL | |
765cf5f6 | 4171 | ? bfd_get_filename (sec->owner->my_archive) : ""), |
cd4a7468 | 4172 | info->path_separator, |
765cf5f6 | 4173 | bfd_get_filename (sec->owner), |
cd4a7468 AM |
4174 | sec->name) <= 0) |
4175 | return -1; | |
4176 | for (call = call_fun->call_list; call; call = call->next) | |
4177 | if (call->is_pasted) | |
4178 | break; | |
4179 | } | |
4180 | } | |
4181 | } | |
4182 | ||
4183 | return j; | |
4184 | } | |
4185 | ||
9dcc4794 AM |
4186 | /* Handle --auto-overlay. */ |
4187 | ||
9dcc4794 | 4188 | static void |
64615358 | 4189 | spu_elf_auto_overlay (struct bfd_link_info *info) |
9dcc4794 AM |
4190 | { |
4191 | bfd *ibfd; | |
4192 | bfd **bfd_arr; | |
4193 | struct elf_segment_map *m; | |
4194 | unsigned int fixed_size, lo, hi; | |
2a516af6 | 4195 | unsigned int reserved; |
9dcc4794 AM |
4196 | struct spu_link_hash_table *htab; |
4197 | unsigned int base, i, count, bfd_count; | |
a3a219a9 | 4198 | unsigned int region, ovlynum; |
9dcc4794 | 4199 | asection **ovly_sections, **ovly_p; |
a3a219a9 | 4200 | unsigned int *ovly_map; |
9dcc4794 AM |
4201 | FILE *script; |
4202 | unsigned int total_overlay_size, overlay_size; | |
cd4a7468 | 4203 | const char *ovly_mgr_entry; |
9dcc4794 AM |
4204 | struct elf_link_hash_entry *h; |
4205 | struct _mos_param mos_param; | |
4206 | struct _uos_param uos_param; | |
4207 | struct function_info dummy_caller; | |
4208 | ||
4209 | /* Find the extents of our loadable image. */ | |
4210 | lo = (unsigned int) -1; | |
4211 | hi = 0; | |
12bd6957 | 4212 | for (m = elf_seg_map (info->output_bfd); m != NULL; m = m->next) |
9dcc4794 AM |
4213 | if (m->p_type == PT_LOAD) |
4214 | for (i = 0; i < m->count; i++) | |
4215 | if (m->sections[i]->size != 0) | |
4216 | { | |
4217 | if (m->sections[i]->vma < lo) | |
4218 | lo = m->sections[i]->vma; | |
4219 | if (m->sections[i]->vma + m->sections[i]->size - 1 > hi) | |
4220 | hi = m->sections[i]->vma + m->sections[i]->size - 1; | |
4221 | } | |
4222 | fixed_size = hi + 1 - lo; | |
4223 | ||
4224 | if (!discover_functions (info)) | |
4225 | goto err_exit; | |
4226 | ||
4227 | if (!build_call_tree (info)) | |
4228 | goto err_exit; | |
4229 | ||
a14c90c1 | 4230 | htab = spu_hash_table (info); |
2a516af6 UW |
4231 | reserved = htab->params->auto_overlay_reserved; |
4232 | if (reserved == 0) | |
a14c90c1 UW |
4233 | { |
4234 | struct _sum_stack_param sum_stack_param; | |
4235 | ||
4236 | sum_stack_param.emit_stack_syms = 0; | |
4237 | sum_stack_param.overall_stack = 0; | |
4238 | if (!for_each_node (sum_stack, info, &sum_stack_param, TRUE)) | |
4239 | goto err_exit; | |
2a516af6 UW |
4240 | reserved = (sum_stack_param.overall_stack |
4241 | + htab->params->extra_stack_space); | |
a14c90c1 UW |
4242 | } |
4243 | ||
4244 | /* No need for overlays if everything already fits. */ | |
2a516af6 | 4245 | if (fixed_size + reserved <= htab->local_store |
a14c90c1 UW |
4246 | && htab->params->ovly_flavour != ovly_soft_icache) |
4247 | { | |
4248 | htab->params->auto_overlay = 0; | |
4249 | return; | |
4250 | } | |
4251 | ||
9dcc4794 AM |
4252 | uos_param.exclude_input_section = 0; |
4253 | uos_param.exclude_output_section | |
4254 | = bfd_get_section_by_name (info->output_bfd, ".interrupt"); | |
4255 | ||
cd4a7468 AM |
4256 | ovly_mgr_entry = "__ovly_load"; |
4257 | if (htab->params->ovly_flavour == ovly_soft_icache) | |
4258 | ovly_mgr_entry = "__icache_br_handler"; | |
4259 | h = elf_link_hash_lookup (&htab->elf, ovly_mgr_entry, | |
9dcc4794 AM |
4260 | FALSE, FALSE, FALSE); |
4261 | if (h != NULL | |
4262 | && (h->root.type == bfd_link_hash_defined | |
4263 | || h->root.type == bfd_link_hash_defweak) | |
4264 | && h->def_regular) | |
4265 | { | |
4266 | /* We have a user supplied overlay manager. */ | |
4267 | uos_param.exclude_input_section = h->root.u.def.section; | |
4268 | } | |
4269 | else | |
4270 | { | |
4271 | /* If no user overlay manager, spu_elf_load_ovl_mgr will add our | |
4272 | builtin version to .text, and will adjust .text size. */ | |
64615358 | 4273 | fixed_size += (*htab->params->spu_elf_load_ovl_mgr) (); |
9dcc4794 AM |
4274 | } |
4275 | ||
4276 | /* Mark overlay sections, and find max overlay section size. */ | |
4277 | mos_param.max_overlay_size = 0; | |
4278 | if (!for_each_node (mark_overlay_section, info, &mos_param, TRUE)) | |
4279 | goto err_exit; | |
4280 | ||
4281 | /* We can't put the overlay manager or interrupt routines in | |
4282 | overlays. */ | |
4283 | uos_param.clearing = 0; | |
4284 | if ((uos_param.exclude_input_section | |
4285 | || uos_param.exclude_output_section) | |
4286 | && !for_each_node (unmark_overlay_section, info, &uos_param, TRUE)) | |
4287 | goto err_exit; | |
4288 | ||
4289 | bfd_count = 0; | |
c72f2fb2 | 4290 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9dcc4794 AM |
4291 | ++bfd_count; |
4292 | bfd_arr = bfd_malloc (bfd_count * sizeof (*bfd_arr)); | |
4293 | if (bfd_arr == NULL) | |
4294 | goto err_exit; | |
4295 | ||
4296 | /* Count overlay sections, and subtract their sizes from "fixed_size". */ | |
4297 | count = 0; | |
4298 | bfd_count = 0; | |
4299 | total_overlay_size = 0; | |
c72f2fb2 | 4300 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9dcc4794 | 4301 | { |
6d00b590 | 4302 | extern const bfd_target spu_elf32_vec; |
9dcc4794 AM |
4303 | asection *sec; |
4304 | unsigned int old_count; | |
4305 | ||
6d00b590 | 4306 | if (ibfd->xvec != &spu_elf32_vec) |
9dcc4794 AM |
4307 | continue; |
4308 | ||
4309 | old_count = count; | |
4310 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
4311 | if (sec->linker_mark) | |
4312 | { | |
4313 | if ((sec->flags & SEC_CODE) != 0) | |
4314 | count += 1; | |
4315 | fixed_size -= sec->size; | |
4316 | total_overlay_size += sec->size; | |
4317 | } | |
cd4a7468 AM |
4318 | else if ((sec->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD) |
4319 | && sec->output_section->owner == info->output_bfd | |
4320 | && strncmp (sec->output_section->name, ".ovl.init", 9) == 0) | |
4321 | fixed_size -= sec->size; | |
9dcc4794 AM |
4322 | if (count != old_count) |
4323 | bfd_arr[bfd_count++] = ibfd; | |
4324 | } | |
4325 | ||
4326 | /* Since the overlay link script selects sections by file name and | |
4327 | section name, ensure that file names are unique. */ | |
4328 | if (bfd_count > 1) | |
4329 | { | |
4330 | bfd_boolean ok = TRUE; | |
4331 | ||
4332 | qsort (bfd_arr, bfd_count, sizeof (*bfd_arr), sort_bfds); | |
4333 | for (i = 1; i < bfd_count; ++i) | |
765cf5f6 AM |
4334 | if (filename_cmp (bfd_get_filename (bfd_arr[i - 1]), |
4335 | bfd_get_filename (bfd_arr[i])) == 0) | |
9dcc4794 | 4336 | { |
97407faf | 4337 | if (bfd_arr[i - 1]->my_archive == bfd_arr[i]->my_archive) |
9dcc4794 | 4338 | { |
97407faf | 4339 | if (bfd_arr[i - 1]->my_archive && bfd_arr[i]->my_archive) |
695344c0 | 4340 | /* xgettext:c-format */ |
9dcc4794 | 4341 | info->callbacks->einfo (_("%s duplicated in %s\n"), |
765cf5f6 AM |
4342 | bfd_get_filename (bfd_arr[i]), |
4343 | bfd_get_filename (bfd_arr[i]->my_archive)); | |
97407faf AM |
4344 | else |
4345 | info->callbacks->einfo (_("%s duplicated\n"), | |
765cf5f6 | 4346 | bfd_get_filename (bfd_arr[i])); |
97407faf | 4347 | ok = FALSE; |
9dcc4794 | 4348 | } |
9dcc4794 AM |
4349 | } |
4350 | if (!ok) | |
4351 | { | |
9dcc4794 AM |
4352 | info->callbacks->einfo (_("sorry, no support for duplicate " |
4353 | "object files in auto-overlay script\n")); | |
4354 | bfd_set_error (bfd_error_bad_value); | |
4355 | goto err_exit; | |
4356 | } | |
4357 | } | |
4358 | free (bfd_arr); | |
4359 | ||
2a516af6 | 4360 | fixed_size += reserved; |
a7e11ee1 | 4361 | fixed_size += htab->non_ovly_stub * ovl_stub_size (htab->params); |
9dcc4794 AM |
4362 | if (fixed_size + mos_param.max_overlay_size <= htab->local_store) |
4363 | { | |
cd4a7468 AM |
4364 | if (htab->params->ovly_flavour == ovly_soft_icache) |
4365 | { | |
4366 | /* Stubs in the non-icache area are bigger. */ | |
4367 | fixed_size += htab->non_ovly_stub * 16; | |
4368 | /* Space for icache manager tables. | |
4369 | a) Tag array, one quadword per cache line. | |
97fc8d84 UW |
4370 | - word 0: ia address of present line, init to zero. */ |
4371 | fixed_size += 16 << htab->num_lines_log2; | |
4372 | /* b) Rewrite "to" list, one quadword per cache line. */ | |
cd4a7468 | 4373 | fixed_size += 16 << htab->num_lines_log2; |
97fc8d84 UW |
4374 | /* c) Rewrite "from" list, one byte per outgoing branch (rounded up |
4375 | to a power-of-two number of full quadwords) per cache line. */ | |
4376 | fixed_size += 16 << (htab->fromelem_size_log2 | |
4377 | + htab->num_lines_log2); | |
c1ea05bb UW |
4378 | /* d) Pointer to __ea backing store (toe), 1 quadword. */ |
4379 | fixed_size += 16; | |
cd4a7468 AM |
4380 | } |
4381 | else | |
4382 | { | |
4383 | /* Guess number of overlays. Assuming overlay buffer is on | |
4384 | average only half full should be conservative. */ | |
4385 | ovlynum = (total_overlay_size * 2 * htab->params->num_lines | |
4386 | / (htab->local_store - fixed_size)); | |
4387 | /* Space for _ovly_table[], _ovly_buf_table[] and toe. */ | |
4388 | fixed_size += ovlynum * 16 + 16 + 4 + 16; | |
4389 | } | |
9dcc4794 AM |
4390 | } |
4391 | ||
4392 | if (fixed_size + mos_param.max_overlay_size > htab->local_store) | |
695344c0 | 4393 | /* xgettext:c-format */ |
4f0d75be AM |
4394 | info->callbacks->einfo (_("non-overlay size of 0x%v plus maximum overlay " |
4395 | "size of 0x%v exceeds local store\n"), | |
4396 | (bfd_vma) fixed_size, | |
4397 | (bfd_vma) mos_param.max_overlay_size); | |
9dcc4794 AM |
4398 | |
4399 | /* Now see if we should put some functions in the non-overlay area. */ | |
2a516af6 | 4400 | else if (fixed_size < htab->params->auto_overlay_fixed) |
9dcc4794 | 4401 | { |
e5e6a5ff AM |
4402 | unsigned int max_fixed, lib_size; |
4403 | ||
4404 | max_fixed = htab->local_store - mos_param.max_overlay_size; | |
2a516af6 UW |
4405 | if (max_fixed > htab->params->auto_overlay_fixed) |
4406 | max_fixed = htab->params->auto_overlay_fixed; | |
e5e6a5ff | 4407 | lib_size = max_fixed - fixed_size; |
9dcc4794 AM |
4408 | lib_size = auto_ovl_lib_functions (info, lib_size); |
4409 | if (lib_size == (unsigned int) -1) | |
4410 | goto err_exit; | |
e5e6a5ff | 4411 | fixed_size = max_fixed - lib_size; |
9dcc4794 AM |
4412 | } |
4413 | ||
4414 | /* Build an array of sections, suitably sorted to place into | |
4415 | overlays. */ | |
4416 | ovly_sections = bfd_malloc (2 * count * sizeof (*ovly_sections)); | |
4417 | if (ovly_sections == NULL) | |
4418 | goto err_exit; | |
4419 | ovly_p = ovly_sections; | |
4420 | if (!for_each_node (collect_overlays, info, &ovly_p, TRUE)) | |
4421 | goto err_exit; | |
4422 | count = (size_t) (ovly_p - ovly_sections) / 2; | |
a3a219a9 AM |
4423 | ovly_map = bfd_malloc (count * sizeof (*ovly_map)); |
4424 | if (ovly_map == NULL) | |
4425 | goto err_exit; | |
9dcc4794 AM |
4426 | |
4427 | memset (&dummy_caller, 0, sizeof (dummy_caller)); | |
cd4a7468 AM |
4428 | overlay_size = (htab->local_store - fixed_size) / htab->params->num_lines; |
4429 | if (htab->params->line_size != 0) | |
4430 | overlay_size = htab->params->line_size; | |
9dcc4794 AM |
4431 | base = 0; |
4432 | ovlynum = 0; | |
4433 | while (base < count) | |
4434 | { | |
2fc6d3b0 | 4435 | unsigned int size = 0, rosize = 0, roalign = 0; |
9dcc4794 AM |
4436 | |
4437 | for (i = base; i < count; i++) | |
4438 | { | |
2fc6d3b0 AM |
4439 | asection *sec, *rosec; |
4440 | unsigned int tmp, rotmp; | |
64615358 | 4441 | unsigned int num_stubs; |
9dcc4794 AM |
4442 | struct call_info *call, *pasty; |
4443 | struct _spu_elf_section_data *sec_data; | |
4444 | struct spu_elf_stack_info *sinfo; | |
91d6fa6a | 4445 | unsigned int k; |
9dcc4794 AM |
4446 | |
4447 | /* See whether we can add this section to the current | |
4448 | overlay without overflowing our overlay buffer. */ | |
4449 | sec = ovly_sections[2 * i]; | |
2fc6d3b0 AM |
4450 | tmp = align_power (size, sec->alignment_power) + sec->size; |
4451 | rotmp = rosize; | |
4452 | rosec = ovly_sections[2 * i + 1]; | |
4453 | if (rosec != NULL) | |
4454 | { | |
4455 | rotmp = align_power (rotmp, rosec->alignment_power) + rosec->size; | |
4456 | if (roalign < rosec->alignment_power) | |
4457 | roalign = rosec->alignment_power; | |
4458 | } | |
4459 | if (align_power (tmp, roalign) + rotmp > overlay_size) | |
9dcc4794 AM |
4460 | break; |
4461 | if (sec->segment_mark) | |
4462 | { | |
4463 | /* Pasted sections must stay together, so add their | |
4464 | sizes too. */ | |
91d6fa6a | 4465 | pasty = find_pasted_call (sec); |
9dcc4794 AM |
4466 | while (pasty != NULL) |
4467 | { | |
4468 | struct function_info *call_fun = pasty->fun; | |
2fc6d3b0 AM |
4469 | tmp = (align_power (tmp, call_fun->sec->alignment_power) |
4470 | + call_fun->sec->size); | |
9dcc4794 | 4471 | if (call_fun->rodata) |
2fc6d3b0 AM |
4472 | { |
4473 | rotmp = (align_power (rotmp, | |
4474 | call_fun->rodata->alignment_power) | |
4475 | + call_fun->rodata->size); | |
4476 | if (roalign < rosec->alignment_power) | |
4477 | roalign = rosec->alignment_power; | |
4478 | } | |
9dcc4794 AM |
4479 | for (pasty = call_fun->call_list; pasty; pasty = pasty->next) |
4480 | if (pasty->is_pasted) | |
4481 | break; | |
4482 | } | |
4483 | } | |
2fc6d3b0 | 4484 | if (align_power (tmp, roalign) + rotmp > overlay_size) |
9dcc4794 AM |
4485 | break; |
4486 | ||
4487 | /* If we add this section, we might need new overlay call | |
4488 | stubs. Add any overlay section calls to dummy_call. */ | |
4489 | pasty = NULL; | |
4490 | sec_data = spu_elf_section_data (sec); | |
4491 | sinfo = sec_data->u.i.stack_info; | |
91d6fa6a | 4492 | for (k = 0; k < (unsigned) sinfo->num_fun; ++k) |
9dcc4794 AM |
4493 | for (call = sinfo->fun[k].call_list; call; call = call->next) |
4494 | if (call->is_pasted) | |
4495 | { | |
4496 | BFD_ASSERT (pasty == NULL); | |
4497 | pasty = call; | |
4498 | } | |
4499 | else if (call->fun->sec->linker_mark) | |
4500 | { | |
4501 | if (!copy_callee (&dummy_caller, call)) | |
4502 | goto err_exit; | |
4503 | } | |
4504 | while (pasty != NULL) | |
4505 | { | |
4506 | struct function_info *call_fun = pasty->fun; | |
4507 | pasty = NULL; | |
4508 | for (call = call_fun->call_list; call; call = call->next) | |
4509 | if (call->is_pasted) | |
4510 | { | |
4511 | BFD_ASSERT (pasty == NULL); | |
4512 | pasty = call; | |
4513 | } | |
4514 | else if (!copy_callee (&dummy_caller, call)) | |
4515 | goto err_exit; | |
4516 | } | |
4517 | ||
4518 | /* Calculate call stub size. */ | |
64615358 | 4519 | num_stubs = 0; |
9dcc4794 AM |
4520 | for (call = dummy_caller.call_list; call; call = call->next) |
4521 | { | |
34ad4cb0 UW |
4522 | unsigned int stub_delta = 1; |
4523 | ||
4524 | if (htab->params->ovly_flavour == ovly_soft_icache) | |
4525 | stub_delta = call->count; | |
4526 | num_stubs += stub_delta; | |
9dcc4794 | 4527 | |
9dcc4794 AM |
4528 | /* If the call is within this overlay, we won't need a |
4529 | stub. */ | |
4530 | for (k = base; k < i + 1; k++) | |
4531 | if (call->fun->sec == ovly_sections[2 * k]) | |
4532 | { | |
34ad4cb0 | 4533 | num_stubs -= stub_delta; |
9dcc4794 AM |
4534 | break; |
4535 | } | |
4536 | } | |
cd4a7468 AM |
4537 | if (htab->params->ovly_flavour == ovly_soft_icache |
4538 | && num_stubs > htab->params->max_branch) | |
4539 | break; | |
2fc6d3b0 AM |
4540 | if (align_power (tmp, roalign) + rotmp |
4541 | + num_stubs * ovl_stub_size (htab->params) > overlay_size) | |
9dcc4794 | 4542 | break; |
9dcc4794 | 4543 | size = tmp; |
2fc6d3b0 | 4544 | rosize = rotmp; |
9dcc4794 AM |
4545 | } |
4546 | ||
4547 | if (i == base) | |
4548 | { | |
695344c0 | 4549 | /* xgettext:c-format */ |
871b3ab2 | 4550 | info->callbacks->einfo (_("%pB:%pA%s exceeds overlay size\n"), |
9dcc4794 AM |
4551 | ovly_sections[2 * i]->owner, |
4552 | ovly_sections[2 * i], | |
4553 | ovly_sections[2 * i + 1] ? " + rodata" : ""); | |
4554 | bfd_set_error (bfd_error_bad_value); | |
4555 | goto err_exit; | |
4556 | } | |
4557 | ||
a3a219a9 AM |
4558 | while (dummy_caller.call_list != NULL) |
4559 | { | |
4560 | struct call_info *call = dummy_caller.call_list; | |
4561 | dummy_caller.call_list = call->next; | |
4562 | free (call); | |
4563 | } | |
4564 | ||
4565 | ++ovlynum; | |
4566 | while (base < i) | |
4567 | ovly_map[base++] = ovlynum; | |
4568 | } | |
4569 | ||
4570 | script = htab->params->spu_elf_open_overlay_script (); | |
4571 | ||
cd4a7468 | 4572 | if (htab->params->ovly_flavour == ovly_soft_icache) |
a3a219a9 | 4573 | { |
64028ad7 UW |
4574 | if (fprintf (script, "SECTIONS\n{\n") <= 0) |
4575 | goto file_err; | |
4576 | ||
cd4a7468 | 4577 | if (fprintf (script, |
cd4a7468 AM |
4578 | " . = ALIGN (%u);\n" |
4579 | " .ovl.init : { *(.ovl.init) }\n" | |
4580 | " . = ABSOLUTE (ADDR (.ovl.init));\n", | |
4581 | htab->params->line_size) <= 0) | |
4582 | goto file_err; | |
4583 | ||
a3a219a9 | 4584 | base = 0; |
cd4a7468 AM |
4585 | ovlynum = 1; |
4586 | while (base < count) | |
4587 | { | |
4588 | unsigned int indx = ovlynum - 1; | |
4589 | unsigned int vma, lma; | |
a3a219a9 | 4590 | |
37107878 | 4591 | vma = (indx & (htab->params->num_lines - 1)) << htab->line_size_log2; |
64028ad7 | 4592 | lma = vma + (((indx >> htab->num_lines_log2) + 1) << 18); |
cd4a7468 AM |
4593 | |
4594 | if (fprintf (script, " .ovly%u ABSOLUTE (ADDR (.ovl.init)) + %u " | |
64028ad7 | 4595 | ": AT (LOADADDR (.ovl.init) + %u) {\n", |
cd4a7468 AM |
4596 | ovlynum, vma, lma) <= 0) |
4597 | goto file_err; | |
4598 | ||
4599 | base = print_one_overlay_section (script, base, count, ovlynum, | |
4600 | ovly_map, ovly_sections, info); | |
4601 | if (base == (unsigned) -1) | |
4602 | goto file_err; | |
4603 | ||
4604 | if (fprintf (script, " }\n") <= 0) | |
4605 | goto file_err; | |
4606 | ||
4607 | ovlynum++; | |
4608 | } | |
a3a219a9 | 4609 | |
cd4a7468 AM |
4610 | if (fprintf (script, " . = ABSOLUTE (ADDR (.ovl.init)) + %u;\n", |
4611 | 1 << (htab->num_lines_log2 + htab->line_size_log2)) <= 0) | |
4612 | goto file_err; | |
64028ad7 UW |
4613 | |
4614 | if (fprintf (script, "}\nINSERT AFTER .toe;\n") <= 0) | |
4615 | goto file_err; | |
cd4a7468 AM |
4616 | } |
4617 | else | |
4618 | { | |
64028ad7 UW |
4619 | if (fprintf (script, "SECTIONS\n{\n") <= 0) |
4620 | goto file_err; | |
4621 | ||
cd4a7468 AM |
4622 | if (fprintf (script, |
4623 | " . = ALIGN (16);\n" | |
4624 | " .ovl.init : { *(.ovl.init) }\n" | |
4625 | " . = ABSOLUTE (ADDR (.ovl.init));\n") <= 0) | |
9dcc4794 | 4626 | goto file_err; |
a3a219a9 | 4627 | |
cd4a7468 | 4628 | for (region = 1; region <= htab->params->num_lines; region++) |
9dcc4794 | 4629 | { |
cd4a7468 AM |
4630 | ovlynum = region; |
4631 | base = 0; | |
4632 | while (base < count && ovly_map[base] < ovlynum) | |
4633 | base++; | |
a3a219a9 | 4634 | |
cd4a7468 AM |
4635 | if (base == count) |
4636 | break; | |
a3a219a9 | 4637 | |
cd4a7468 AM |
4638 | if (region == 1) |
4639 | { | |
4640 | /* We need to set lma since we are overlaying .ovl.init. */ | |
4641 | if (fprintf (script, | |
4642 | " OVERLAY : AT (ALIGN (LOADADDR (.ovl.init) + SIZEOF (.ovl.init), 16))\n {\n") <= 0) | |
4643 | goto file_err; | |
4644 | } | |
4645 | else | |
4646 | { | |
4647 | if (fprintf (script, " OVERLAY :\n {\n") <= 0) | |
a3a219a9 | 4648 | goto file_err; |
9dcc4794 | 4649 | } |
9dcc4794 | 4650 | |
cd4a7468 | 4651 | while (base < count) |
9dcc4794 | 4652 | { |
cd4a7468 | 4653 | if (fprintf (script, " .ovly%u {\n", ovlynum) <= 0) |
a3a219a9 AM |
4654 | goto file_err; |
4655 | ||
cd4a7468 AM |
4656 | base = print_one_overlay_section (script, base, count, ovlynum, |
4657 | ovly_map, ovly_sections, info); | |
4658 | if (base == (unsigned) -1) | |
4659 | goto file_err; | |
4660 | ||
4661 | if (fprintf (script, " }\n") <= 0) | |
4662 | goto file_err; | |
4663 | ||
4664 | ovlynum += htab->params->num_lines; | |
4665 | while (base < count && ovly_map[base] < ovlynum) | |
4666 | base++; | |
9dcc4794 | 4667 | } |
9dcc4794 | 4668 | |
cd4a7468 | 4669 | if (fprintf (script, " }\n") <= 0) |
a3a219a9 | 4670 | goto file_err; |
9dcc4794 AM |
4671 | } |
4672 | ||
64028ad7 UW |
4673 | if (fprintf (script, "}\nINSERT BEFORE .text;\n") <= 0) |
4674 | goto file_err; | |
9dcc4794 | 4675 | } |
a3a219a9 AM |
4676 | |
4677 | free (ovly_map); | |
9dcc4794 AM |
4678 | free (ovly_sections); |
4679 | ||
9dcc4794 AM |
4680 | if (fclose (script) != 0) |
4681 | goto file_err; | |
4682 | ||
64615358 AM |
4683 | if (htab->params->auto_overlay & AUTO_RELINK) |
4684 | (*htab->params->spu_elf_relink) (); | |
9dcc4794 AM |
4685 | |
4686 | xexit (0); | |
4687 | ||
4688 | file_err: | |
4689 | bfd_set_error (bfd_error_system_call); | |
4690 | err_exit: | |
695344c0 | 4691 | info->callbacks->einfo (_("%F%P: auto overlay error: %E\n")); |
9dcc4794 AM |
4692 | xexit (1); |
4693 | } | |
4694 | ||
49fa1e15 AM |
4695 | /* Provide an estimate of total stack required. */ |
4696 | ||
4697 | static bfd_boolean | |
64615358 | 4698 | spu_elf_stack_analysis (struct bfd_link_info *info) |
49fa1e15 | 4699 | { |
64615358 | 4700 | struct spu_link_hash_table *htab; |
055ed83b | 4701 | struct _sum_stack_param sum_stack_param; |
49fa1e15 | 4702 | |
c65be8d7 | 4703 | if (!discover_functions (info)) |
49fa1e15 AM |
4704 | return FALSE; |
4705 | ||
c65be8d7 | 4706 | if (!build_call_tree (info)) |
49fa1e15 AM |
4707 | return FALSE; |
4708 | ||
64615358 | 4709 | htab = spu_hash_table (info); |
cd4a7468 AM |
4710 | if (htab->params->stack_analysis) |
4711 | { | |
4712 | info->callbacks->info (_("Stack size for call graph root nodes.\n")); | |
4713 | info->callbacks->minfo (_("\nStack size for functions. " | |
4714 | "Annotations: '*' max stack, 't' tail call\n")); | |
4715 | } | |
49fa1e15 | 4716 | |
64615358 | 4717 | sum_stack_param.emit_stack_syms = htab->params->emit_stack_syms; |
055ed83b AM |
4718 | sum_stack_param.overall_stack = 0; |
4719 | if (!for_each_node (sum_stack, info, &sum_stack_param, TRUE)) | |
4720 | return FALSE; | |
49fa1e15 | 4721 | |
cd4a7468 AM |
4722 | if (htab->params->stack_analysis) |
4723 | info->callbacks->info (_("Maximum stack required is 0x%v\n"), | |
4724 | (bfd_vma) sum_stack_param.overall_stack); | |
49fa1e15 AM |
4725 | return TRUE; |
4726 | } | |
4727 | ||
4728 | /* Perform a final link. */ | |
4729 | ||
4730 | static bfd_boolean | |
4731 | spu_elf_final_link (bfd *output_bfd, struct bfd_link_info *info) | |
4732 | { | |
4733 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
4734 | ||
64615358 AM |
4735 | if (htab->params->auto_overlay) |
4736 | spu_elf_auto_overlay (info); | |
9dcc4794 | 4737 | |
cd4a7468 AM |
4738 | if ((htab->params->stack_analysis |
4739 | || (htab->params->ovly_flavour == ovly_soft_icache | |
4740 | && htab->params->lrlive_analysis)) | |
64615358 | 4741 | && !spu_elf_stack_analysis (info)) |
695344c0 | 4742 | info->callbacks->einfo (_("%X%P: stack/lrlive analysis error: %E\n")); |
cd4a7468 AM |
4743 | |
4744 | if (!spu_elf_build_stubs (info)) | |
695344c0 | 4745 | info->callbacks->einfo (_("%F%P: can not build overlay stubs: %E\n")); |
49fa1e15 AM |
4746 | |
4747 | return bfd_elf_final_link (output_bfd, info); | |
4748 | } | |
4749 | ||
0e1862bb | 4750 | /* Called when not normally emitting relocs, ie. !bfd_link_relocatable (info) |
ece5ef60 AM |
4751 | and !info->emitrelocations. Returns a count of special relocs |
4752 | that need to be emitted. */ | |
4753 | ||
4754 | static unsigned int | |
58217f29 | 4755 | spu_elf_count_relocs (struct bfd_link_info *info, asection *sec) |
ece5ef60 | 4756 | { |
58217f29 | 4757 | Elf_Internal_Rela *relocs; |
ece5ef60 | 4758 | unsigned int count = 0; |
ece5ef60 | 4759 | |
58217f29 AM |
4760 | relocs = _bfd_elf_link_read_relocs (sec->owner, sec, NULL, NULL, |
4761 | info->keep_memory); | |
4762 | if (relocs != NULL) | |
ece5ef60 | 4763 | { |
58217f29 AM |
4764 | Elf_Internal_Rela *rel; |
4765 | Elf_Internal_Rela *relend = relocs + sec->reloc_count; | |
4766 | ||
4767 | for (rel = relocs; rel < relend; rel++) | |
4768 | { | |
4769 | int r_type = ELF32_R_TYPE (rel->r_info); | |
4770 | if (r_type == R_SPU_PPU32 || r_type == R_SPU_PPU64) | |
4771 | ++count; | |
4772 | } | |
4773 | ||
4774 | if (elf_section_data (sec)->relocs != relocs) | |
4775 | free (relocs); | |
ece5ef60 AM |
4776 | } |
4777 | ||
4778 | return count; | |
4779 | } | |
4780 | ||
9cc305ec TS |
4781 | /* Functions for adding fixup records to .fixup */ |
4782 | ||
4783 | #define FIXUP_RECORD_SIZE 4 | |
4784 | ||
4785 | #define FIXUP_PUT(output_bfd,htab,index,addr) \ | |
4786 | bfd_put_32 (output_bfd, addr, \ | |
4787 | htab->sfixup->contents + FIXUP_RECORD_SIZE * (index)) | |
4788 | #define FIXUP_GET(output_bfd,htab,index) \ | |
4789 | bfd_get_32 (output_bfd, \ | |
4790 | htab->sfixup->contents + FIXUP_RECORD_SIZE * (index)) | |
4791 | ||
4792 | /* Store OFFSET in .fixup. This assumes it will be called with an | |
4793 | increasing OFFSET. When this OFFSET fits with the last base offset, | |
4794 | it just sets a bit, otherwise it adds a new fixup record. */ | |
4795 | static void | |
4796 | spu_elf_emit_fixup (bfd * output_bfd, struct bfd_link_info *info, | |
4797 | bfd_vma offset) | |
4798 | { | |
4799 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
4800 | asection *sfixup = htab->sfixup; | |
4801 | bfd_vma qaddr = offset & ~(bfd_vma) 15; | |
4802 | bfd_vma bit = ((bfd_vma) 8) >> ((offset & 15) >> 2); | |
4803 | if (sfixup->reloc_count == 0) | |
4804 | { | |
4805 | FIXUP_PUT (output_bfd, htab, 0, qaddr | bit); | |
4806 | sfixup->reloc_count++; | |
4807 | } | |
4808 | else | |
4809 | { | |
4810 | bfd_vma base = FIXUP_GET (output_bfd, htab, sfixup->reloc_count - 1); | |
4811 | if (qaddr != (base & ~(bfd_vma) 15)) | |
4812 | { | |
4813 | if ((sfixup->reloc_count + 1) * FIXUP_RECORD_SIZE > sfixup->size) | |
4eca0228 | 4814 | _bfd_error_handler (_("fatal error while creating .fixup")); |
9cc305ec TS |
4815 | FIXUP_PUT (output_bfd, htab, sfixup->reloc_count, qaddr | bit); |
4816 | sfixup->reloc_count++; | |
4817 | } | |
4818 | else | |
4819 | FIXUP_PUT (output_bfd, htab, sfixup->reloc_count - 1, base | bit); | |
4820 | } | |
4821 | } | |
4822 | ||
e9f53129 AM |
4823 | /* Apply RELOCS to CONTENTS of INPUT_SECTION from INPUT_BFD. */ |
4824 | ||
d16c7321 | 4825 | static int |
e9f53129 AM |
4826 | spu_elf_relocate_section (bfd *output_bfd, |
4827 | struct bfd_link_info *info, | |
4828 | bfd *input_bfd, | |
4829 | asection *input_section, | |
4830 | bfd_byte *contents, | |
4831 | Elf_Internal_Rela *relocs, | |
4832 | Elf_Internal_Sym *local_syms, | |
4833 | asection **local_sections) | |
4834 | { | |
4835 | Elf_Internal_Shdr *symtab_hdr; | |
4836 | struct elf_link_hash_entry **sym_hashes; | |
4837 | Elf_Internal_Rela *rel, *relend; | |
4838 | struct spu_link_hash_table *htab; | |
64615358 | 4839 | asection *ea; |
d16c7321 | 4840 | int ret = TRUE; |
ece5ef60 | 4841 | bfd_boolean emit_these_relocs = FALSE; |
cc5ca406 | 4842 | bfd_boolean is_ea_sym; |
fdba2fcd | 4843 | bfd_boolean stubs; |
cd4a7468 | 4844 | unsigned int iovl = 0; |
e9f53129 | 4845 | |
e9f53129 | 4846 | htab = spu_hash_table (info); |
fdba2fcd | 4847 | stubs = (htab->stub_sec != NULL |
64615358 | 4848 | && maybe_needs_stubs (input_section)); |
cd4a7468 | 4849 | iovl = overlay_index (input_section); |
64615358 | 4850 | ea = bfd_get_section_by_name (output_bfd, "._ea"); |
e9f53129 AM |
4851 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
4852 | sym_hashes = (struct elf_link_hash_entry **) (elf_sym_hashes (input_bfd)); | |
4853 | ||
4854 | rel = relocs; | |
4855 | relend = relocs + input_section->reloc_count; | |
4856 | for (; rel < relend; rel++) | |
4857 | { | |
4858 | int r_type; | |
4859 | reloc_howto_type *howto; | |
8374f9d4 | 4860 | unsigned int r_symndx; |
e9f53129 AM |
4861 | Elf_Internal_Sym *sym; |
4862 | asection *sec; | |
4863 | struct elf_link_hash_entry *h; | |
4864 | const char *sym_name; | |
4865 | bfd_vma relocation; | |
4866 | bfd_vma addend; | |
4867 | bfd_reloc_status_type r; | |
4868 | bfd_boolean unresolved_reloc; | |
124b52c6 | 4869 | enum _stub_type stub_type; |
e9f53129 AM |
4870 | |
4871 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4872 | r_type = ELF32_R_TYPE (rel->r_info); | |
4873 | howto = elf_howto_table + r_type; | |
4874 | unresolved_reloc = FALSE; | |
e9f53129 AM |
4875 | h = NULL; |
4876 | sym = NULL; | |
4877 | sec = NULL; | |
4878 | if (r_symndx < symtab_hdr->sh_info) | |
4879 | { | |
4880 | sym = local_syms + r_symndx; | |
4881 | sec = local_sections[r_symndx]; | |
4882 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); | |
4883 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
4884 | } | |
4885 | else | |
4886 | { | |
dc1859a6 AM |
4887 | if (sym_hashes == NULL) |
4888 | return FALSE; | |
4889 | ||
4890 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
4891 | ||
8a5da09b AM |
4892 | if (info->wrap_hash != NULL |
4893 | && (input_section->flags & SEC_DEBUGGING) != 0) | |
4894 | h = ((struct elf_link_hash_entry *) | |
4895 | unwrap_hash_lookup (info, input_bfd, &h->root)); | |
4896 | ||
dc1859a6 AM |
4897 | while (h->root.type == bfd_link_hash_indirect |
4898 | || h->root.type == bfd_link_hash_warning) | |
4899 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
4900 | ||
4901 | relocation = 0; | |
4902 | if (h->root.type == bfd_link_hash_defined | |
4903 | || h->root.type == bfd_link_hash_defweak) | |
4904 | { | |
4905 | sec = h->root.u.def.section; | |
4906 | if (sec == NULL | |
4907 | || sec->output_section == NULL) | |
4908 | /* Set a flag that will be cleared later if we find a | |
4909 | relocation value for this symbol. output_section | |
4910 | is typically NULL for symbols satisfied by a shared | |
4911 | library. */ | |
4912 | unresolved_reloc = TRUE; | |
4913 | else | |
4914 | relocation = (h->root.u.def.value | |
4915 | + sec->output_section->vma | |
4916 | + sec->output_offset); | |
4917 | } | |
4918 | else if (h->root.type == bfd_link_hash_undefweak) | |
4919 | ; | |
4920 | else if (info->unresolved_syms_in_objects == RM_IGNORE | |
4921 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
4922 | ; | |
0e1862bb | 4923 | else if (!bfd_link_relocatable (info) |
dc1859a6 AM |
4924 | && !(r_type == R_SPU_PPU32 || r_type == R_SPU_PPU64)) |
4925 | { | |
4926 | bfd_boolean err; | |
95a51568 FS |
4927 | |
4928 | err = (info->unresolved_syms_in_objects == RM_DIAGNOSE | |
4929 | && !info->warn_unresolved_syms) | |
4930 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT; | |
4931 | ||
4932 | info->callbacks->undefined_symbol | |
4933 | (info, h->root.root.string, input_bfd, | |
4934 | input_section, rel->r_offset, err); | |
dc1859a6 | 4935 | } |
e9f53129 AM |
4936 | sym_name = h->root.root.string; |
4937 | } | |
4938 | ||
dbaa2011 | 4939 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 4940 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 4941 | rel, 1, relend, howto, 0, contents); |
ab96bf03 | 4942 | |
0e1862bb | 4943 | if (bfd_link_relocatable (info)) |
ab96bf03 AM |
4944 | continue; |
4945 | ||
8fdcc58d | 4946 | /* Change "a rt,ra,rb" to "ai rt,ra,0". */ |
57e96a08 AM |
4947 | if (r_type == R_SPU_ADD_PIC |
4948 | && h != NULL | |
4949 | && !(h->def_regular || ELF_COMMON_DEF_P (h))) | |
8fdcc58d TS |
4950 | { |
4951 | bfd_byte *loc = contents + rel->r_offset; | |
68ffbac6 L |
4952 | loc[0] = 0x1c; |
4953 | loc[1] = 0x00; | |
8fdcc58d TS |
4954 | loc[2] &= 0x3f; |
4955 | } | |
4956 | ||
cc5ca406 AM |
4957 | is_ea_sym = (ea != NULL |
4958 | && sec != NULL | |
4959 | && sec->output_section == ea); | |
cd4a7468 AM |
4960 | |
4961 | /* If this symbol is in an overlay area, we may need to relocate | |
4962 | to the overlay stub. */ | |
4963 | addend = rel->r_addend; | |
4964 | if (stubs | |
4965 | && !is_ea_sym | |
4966 | && (stub_type = needs_ovl_stub (h, sym, sec, input_section, rel, | |
4967 | contents, info)) != no_stub) | |
4968 | { | |
4969 | unsigned int ovl = 0; | |
4970 | struct got_entry *g, **head; | |
4971 | ||
4972 | if (stub_type != nonovl_stub) | |
4973 | ovl = iovl; | |
4974 | ||
4975 | if (h != NULL) | |
4976 | head = &h->got.glist; | |
4977 | else | |
4978 | head = elf_local_got_ents (input_bfd) + r_symndx; | |
cc5ca406 | 4979 | |
cd4a7468 AM |
4980 | for (g = *head; g != NULL; g = g->next) |
4981 | if (htab->params->ovly_flavour == ovly_soft_icache | |
74681fc4 AM |
4982 | ? (g->ovl == ovl |
4983 | && g->br_addr == (rel->r_offset | |
4984 | + input_section->output_offset | |
4985 | + input_section->output_section->vma)) | |
cd4a7468 AM |
4986 | : g->addend == addend && (g->ovl == ovl || g->ovl == 0)) |
4987 | break; | |
4988 | if (g == NULL) | |
4989 | abort (); | |
4990 | ||
4991 | relocation = g->stub_addr; | |
4992 | addend = 0; | |
4993 | } | |
4994 | else | |
4995 | { | |
4996 | /* For soft icache, encode the overlay index into addresses. */ | |
4997 | if (htab->params->ovly_flavour == ovly_soft_icache | |
d342a8b1 UW |
4998 | && (r_type == R_SPU_ADDR16_HI |
4999 | || r_type == R_SPU_ADDR32 || r_type == R_SPU_REL32) | |
cd4a7468 AM |
5000 | && !is_ea_sym) |
5001 | { | |
5002 | unsigned int ovl = overlay_index (sec); | |
5003 | if (ovl != 0) | |
5004 | { | |
30c665df | 5005 | unsigned int set_id = ((ovl - 1) >> htab->num_lines_log2) + 1; |
cd4a7468 | 5006 | relocation += set_id << 18; |
cd4a7468 AM |
5007 | } |
5008 | } | |
5009 | } | |
5010 | ||
0e1862bb | 5011 | if (htab->params->emit_fixups && !bfd_link_relocatable (info) |
9cc305ec TS |
5012 | && (input_section->flags & SEC_ALLOC) != 0 |
5013 | && r_type == R_SPU_ADDR32) | |
5014 | { | |
5015 | bfd_vma offset; | |
5016 | offset = rel->r_offset + input_section->output_section->vma | |
5017 | + input_section->output_offset; | |
5018 | spu_elf_emit_fixup (output_bfd, info, offset); | |
5019 | } | |
5020 | ||
cd4a7468 AM |
5021 | if (unresolved_reloc) |
5022 | ; | |
5023 | else if (r_type == R_SPU_PPU32 || r_type == R_SPU_PPU64) | |
8374f9d4 | 5024 | { |
cc5ca406 | 5025 | if (is_ea_sym) |
8374f9d4 AM |
5026 | { |
5027 | /* ._ea is a special section that isn't allocated in SPU | |
5028 | memory, but rather occupies space in PPU memory as | |
5029 | part of an embedded ELF image. If this reloc is | |
5030 | against a symbol defined in ._ea, then transform the | |
5031 | reloc into an equivalent one without a symbol | |
5032 | relative to the start of the ELF image. */ | |
5033 | rel->r_addend += (relocation | |
5034 | - ea->vma | |
5035 | + elf_section_data (ea)->this_hdr.sh_offset); | |
5036 | rel->r_info = ELF32_R_INFO (0, r_type); | |
5037 | } | |
5038 | emit_these_relocs = TRUE; | |
5039 | continue; | |
5040 | } | |
cd4a7468 | 5041 | else if (is_ea_sym) |
8374f9d4 AM |
5042 | unresolved_reloc = TRUE; |
5043 | ||
1d5316ab AM |
5044 | if (unresolved_reloc |
5045 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
5046 | rel->r_offset) != (bfd_vma) -1) | |
e9f53129 | 5047 | { |
4eca0228 | 5048 | _bfd_error_handler |
695344c0 | 5049 | /* xgettext:c-format */ |
2dcf00ce AM |
5050 | (_("%pB(%s+%#" PRIx64 "): " |
5051 | "unresolvable %s relocation against symbol `%s'"), | |
e9f53129 | 5052 | input_bfd, |
fd361982 | 5053 | bfd_section_name (input_section), |
2dcf00ce | 5054 | (uint64_t) rel->r_offset, |
e9f53129 AM |
5055 | howto->name, |
5056 | sym_name); | |
5057 | ret = FALSE; | |
5058 | } | |
5059 | ||
e9f53129 AM |
5060 | r = _bfd_final_link_relocate (howto, |
5061 | input_bfd, | |
5062 | input_section, | |
5063 | contents, | |
5064 | rel->r_offset, relocation, addend); | |
5065 | ||
5066 | if (r != bfd_reloc_ok) | |
5067 | { | |
5068 | const char *msg = (const char *) 0; | |
5069 | ||
5070 | switch (r) | |
5071 | { | |
5072 | case bfd_reloc_overflow: | |
1a72702b AM |
5073 | (*info->callbacks->reloc_overflow) |
5074 | (info, (h ? &h->root : NULL), sym_name, howto->name, | |
5075 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset); | |
e9f53129 AM |
5076 | break; |
5077 | ||
5078 | case bfd_reloc_undefined: | |
1a72702b AM |
5079 | (*info->callbacks->undefined_symbol) |
5080 | (info, sym_name, input_bfd, input_section, rel->r_offset, TRUE); | |
e9f53129 AM |
5081 | break; |
5082 | ||
5083 | case bfd_reloc_outofrange: | |
5084 | msg = _("internal error: out of range error"); | |
5085 | goto common_error; | |
5086 | ||
5087 | case bfd_reloc_notsupported: | |
5088 | msg = _("internal error: unsupported relocation error"); | |
5089 | goto common_error; | |
5090 | ||
5091 | case bfd_reloc_dangerous: | |
5092 | msg = _("internal error: dangerous error"); | |
5093 | goto common_error; | |
5094 | ||
5095 | default: | |
5096 | msg = _("internal error: unknown error"); | |
5097 | /* fall through */ | |
5098 | ||
5099 | common_error: | |
d16c7321 | 5100 | ret = FALSE; |
1a72702b AM |
5101 | (*info->callbacks->warning) (info, msg, sym_name, input_bfd, |
5102 | input_section, rel->r_offset); | |
e9f53129 AM |
5103 | break; |
5104 | } | |
5105 | } | |
5106 | } | |
5107 | ||
ece5ef60 AM |
5108 | if (ret |
5109 | && emit_these_relocs | |
ece5ef60 AM |
5110 | && !info->emitrelocations) |
5111 | { | |
5112 | Elf_Internal_Rela *wrel; | |
5113 | Elf_Internal_Shdr *rel_hdr; | |
5114 | ||
5115 | wrel = rel = relocs; | |
5116 | relend = relocs + input_section->reloc_count; | |
5117 | for (; rel < relend; rel++) | |
5118 | { | |
5119 | int r_type; | |
5120 | ||
5121 | r_type = ELF32_R_TYPE (rel->r_info); | |
5122 | if (r_type == R_SPU_PPU32 || r_type == R_SPU_PPU64) | |
5123 | *wrel++ = *rel; | |
5124 | } | |
5125 | input_section->reloc_count = wrel - relocs; | |
5126 | /* Backflips for _bfd_elf_link_output_relocs. */ | |
d4730f92 | 5127 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); |
ece5ef60 AM |
5128 | rel_hdr->sh_size = input_section->reloc_count * rel_hdr->sh_entsize; |
5129 | ret = 2; | |
5130 | } | |
5131 | ||
e9f53129 AM |
5132 | return ret; |
5133 | } | |
5134 | ||
29c70241 AM |
5135 | static bfd_boolean |
5136 | spu_elf_finish_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
5137 | struct bfd_link_info *info ATTRIBUTE_UNUSED) | |
5138 | { | |
5139 | return TRUE; | |
5140 | } | |
5141 | ||
c1b2796f AM |
5142 | /* Adjust _SPUEAR_ syms to point at their overlay stubs. */ |
5143 | ||
6e0b88f1 | 5144 | static int |
c1b2796f AM |
5145 | spu_elf_output_symbol_hook (struct bfd_link_info *info, |
5146 | const char *sym_name ATTRIBUTE_UNUSED, | |
5147 | Elf_Internal_Sym *sym, | |
5148 | asection *sym_sec ATTRIBUTE_UNUSED, | |
5149 | struct elf_link_hash_entry *h) | |
5150 | { | |
5151 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
5152 | ||
0e1862bb | 5153 | if (!bfd_link_relocatable (info) |
47f6dab9 | 5154 | && htab->stub_sec != NULL |
c1b2796f AM |
5155 | && h != NULL |
5156 | && (h->root.type == bfd_link_hash_defined | |
5157 | || h->root.type == bfd_link_hash_defweak) | |
5158 | && h->def_regular | |
5159 | && strncmp (h->root.root.string, "_SPUEAR_", 8) == 0) | |
5160 | { | |
4a628337 | 5161 | struct got_entry *g; |
c1b2796f | 5162 | |
4a628337 | 5163 | for (g = h->got.glist; g != NULL; g = g->next) |
cd4a7468 AM |
5164 | if (htab->params->ovly_flavour == ovly_soft_icache |
5165 | ? g->br_addr == g->stub_addr | |
5166 | : g->addend == 0 && g->ovl == 0) | |
4a628337 AM |
5167 | { |
5168 | sym->st_shndx = (_bfd_elf_section_from_bfd_section | |
5169 | (htab->stub_sec[0]->output_section->owner, | |
5170 | htab->stub_sec[0]->output_section)); | |
5171 | sym->st_value = g->stub_addr; | |
5172 | break; | |
5173 | } | |
c1b2796f AM |
5174 | } |
5175 | ||
6e0b88f1 | 5176 | return 1; |
c1b2796f AM |
5177 | } |
5178 | ||
e9f53129 AM |
5179 | static int spu_plugin = 0; |
5180 | ||
5181 | void | |
5182 | spu_elf_plugin (int val) | |
5183 | { | |
5184 | spu_plugin = val; | |
5185 | } | |
5186 | ||
5187 | /* Set ELF header e_type for plugins. */ | |
5188 | ||
ed7e9d0b AM |
5189 | static bfd_boolean |
5190 | spu_elf_init_file_header (bfd *abfd, struct bfd_link_info *info) | |
e9f53129 | 5191 | { |
ed7e9d0b AM |
5192 | if (!_bfd_elf_init_file_header (abfd, info)) |
5193 | return FALSE; | |
5194 | ||
e9f53129 AM |
5195 | if (spu_plugin) |
5196 | { | |
5197 | Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd); | |
5198 | ||
5199 | i_ehdrp->e_type = ET_DYN; | |
5200 | } | |
ed7e9d0b | 5201 | return TRUE; |
e9f53129 AM |
5202 | } |
5203 | ||
5204 | /* We may add an extra PT_LOAD segment for .toe. We also need extra | |
5205 | segments for overlays. */ | |
5206 | ||
5207 | static int | |
5208 | spu_elf_additional_program_headers (bfd *abfd, struct bfd_link_info *info) | |
5209 | { | |
ceae84aa | 5210 | int extra = 0; |
e9f53129 AM |
5211 | asection *sec; |
5212 | ||
ceae84aa AM |
5213 | if (info != NULL) |
5214 | { | |
5215 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
5216 | extra = htab->num_overlays; | |
5217 | } | |
5218 | ||
e9f53129 AM |
5219 | if (extra) |
5220 | ++extra; | |
5221 | ||
5222 | sec = bfd_get_section_by_name (abfd, ".toe"); | |
5223 | if (sec != NULL && (sec->flags & SEC_LOAD) != 0) | |
5224 | ++extra; | |
5225 | ||
5226 | return extra; | |
5227 | } | |
5228 | ||
5229 | /* Remove .toe section from other PT_LOAD segments and put it in | |
5230 | a segment of its own. Put overlays in separate segments too. */ | |
5231 | ||
5232 | static bfd_boolean | |
5233 | spu_elf_modify_segment_map (bfd *abfd, struct bfd_link_info *info) | |
5234 | { | |
5235 | asection *toe, *s; | |
452de53c | 5236 | struct elf_segment_map *m, *m_overlay; |
e0c3dfa2 | 5237 | struct elf_segment_map **p, **p_overlay, **first_load; |
e9f53129 AM |
5238 | unsigned int i; |
5239 | ||
5240 | if (info == NULL) | |
5241 | return TRUE; | |
5242 | ||
5243 | toe = bfd_get_section_by_name (abfd, ".toe"); | |
12bd6957 | 5244 | for (m = elf_seg_map (abfd); m != NULL; m = m->next) |
e9f53129 AM |
5245 | if (m->p_type == PT_LOAD && m->count > 1) |
5246 | for (i = 0; i < m->count; i++) | |
5247 | if ((s = m->sections[i]) == toe | |
47f6dab9 | 5248 | || spu_elf_section_data (s)->u.o.ovl_index != 0) |
e9f53129 AM |
5249 | { |
5250 | struct elf_segment_map *m2; | |
5251 | bfd_vma amt; | |
5252 | ||
5253 | if (i + 1 < m->count) | |
5254 | { | |
5255 | amt = sizeof (struct elf_segment_map); | |
5256 | amt += (m->count - (i + 2)) * sizeof (m->sections[0]); | |
5257 | m2 = bfd_zalloc (abfd, amt); | |
5258 | if (m2 == NULL) | |
5259 | return FALSE; | |
5260 | m2->count = m->count - (i + 1); | |
5261 | memcpy (m2->sections, m->sections + i + 1, | |
5262 | m2->count * sizeof (m->sections[0])); | |
5263 | m2->p_type = PT_LOAD; | |
5264 | m2->next = m->next; | |
5265 | m->next = m2; | |
5266 | } | |
5267 | m->count = 1; | |
5268 | if (i != 0) | |
5269 | { | |
5270 | m->count = i; | |
5271 | amt = sizeof (struct elf_segment_map); | |
5272 | m2 = bfd_zalloc (abfd, amt); | |
5273 | if (m2 == NULL) | |
5274 | return FALSE; | |
5275 | m2->p_type = PT_LOAD; | |
5276 | m2->count = 1; | |
5277 | m2->sections[0] = s; | |
5278 | m2->next = m->next; | |
5279 | m->next = m2; | |
5280 | } | |
5281 | break; | |
5282 | } | |
5283 | ||
452de53c UW |
5284 | |
5285 | /* Some SPU ELF loaders ignore the PF_OVERLAY flag and just load all | |
5286 | PT_LOAD segments. This can cause the .ovl.init section to be | |
5287 | overwritten with the contents of some overlay segment. To work | |
5288 | around this issue, we ensure that all PF_OVERLAY segments are | |
5289 | sorted first amongst the program headers; this ensures that even | |
5290 | with a broken loader, the .ovl.init section (which is not marked | |
5291 | as PF_OVERLAY) will be placed into SPU local store on startup. */ | |
5292 | ||
5293 | /* Move all overlay segments onto a separate list. */ | |
12bd6957 | 5294 | p = &elf_seg_map (abfd); |
452de53c | 5295 | p_overlay = &m_overlay; |
e0c3dfa2 AM |
5296 | m_overlay = NULL; |
5297 | first_load = NULL; | |
452de53c UW |
5298 | while (*p != NULL) |
5299 | { | |
e0c3dfa2 | 5300 | if ((*p)->p_type == PT_LOAD) |
452de53c | 5301 | { |
e0c3dfa2 AM |
5302 | if (!first_load) |
5303 | first_load = p; | |
5304 | if ((*p)->count == 1 | |
5305 | && spu_elf_section_data ((*p)->sections[0])->u.o.ovl_index != 0) | |
5306 | { | |
5307 | m = *p; | |
30fe1832 | 5308 | m->no_sort_lma = 1; |
e0c3dfa2 AM |
5309 | *p = m->next; |
5310 | *p_overlay = m; | |
5311 | p_overlay = &m->next; | |
5312 | continue; | |
5313 | } | |
452de53c | 5314 | } |
452de53c UW |
5315 | p = &((*p)->next); |
5316 | } | |
5317 | ||
5318 | /* Re-insert overlay segments at the head of the segment map. */ | |
e0c3dfa2 AM |
5319 | if (m_overlay != NULL) |
5320 | { | |
5321 | p = first_load; | |
5322 | if (*p != NULL && (*p)->p_type == PT_LOAD && (*p)->includes_filehdr) | |
5323 | /* It doesn't really make sense for someone to include the ELF | |
5324 | file header into an spu image, but if they do the code that | |
5325 | assigns p_offset needs to see the segment containing the | |
5326 | header first. */ | |
5327 | p = &(*p)->next; | |
5328 | *p_overlay = *p; | |
5329 | *p = m_overlay; | |
5330 | } | |
452de53c | 5331 | |
e9f53129 AM |
5332 | return TRUE; |
5333 | } | |
5334 | ||
7d3287cb AM |
5335 | /* Tweak the section type of .note.spu_name. */ |
5336 | ||
5337 | static bfd_boolean | |
5338 | spu_elf_fake_sections (bfd *obfd ATTRIBUTE_UNUSED, | |
5339 | Elf_Internal_Shdr *hdr, | |
5340 | asection *sec) | |
5341 | { | |
5342 | if (strcmp (sec->name, SPU_PTNOTE_SPUNAME) == 0) | |
5343 | hdr->sh_type = SHT_NOTE; | |
5344 | return TRUE; | |
5345 | } | |
5346 | ||
e9f53129 AM |
5347 | /* Tweak phdrs before writing them out. */ |
5348 | ||
5349 | static int | |
6d6c25c8 | 5350 | spu_elf_modify_headers (bfd *abfd, struct bfd_link_info *info) |
e9f53129 | 5351 | { |
6d6c25c8 | 5352 | if (info != NULL) |
e9f53129 | 5353 | { |
6d6c25c8 AM |
5354 | const struct elf_backend_data *bed; |
5355 | struct elf_obj_tdata *tdata; | |
5356 | Elf_Internal_Phdr *phdr, *last; | |
5357 | struct spu_link_hash_table *htab; | |
5358 | unsigned int count; | |
5359 | unsigned int i; | |
5360 | ||
5361 | bed = get_elf_backend_data (abfd); | |
5362 | tdata = elf_tdata (abfd); | |
5363 | phdr = tdata->phdr; | |
5364 | count = elf_program_header_size (abfd) / bed->s->sizeof_phdr; | |
5365 | htab = spu_hash_table (info); | |
5366 | if (htab->num_overlays != 0) | |
5367 | { | |
5368 | struct elf_segment_map *m; | |
5369 | unsigned int o; | |
e9f53129 | 5370 | |
6d6c25c8 AM |
5371 | for (i = 0, m = elf_seg_map (abfd); m; ++i, m = m->next) |
5372 | if (m->count != 0 | |
5373 | && ((o = spu_elf_section_data (m->sections[0])->u.o.ovl_index) | |
5374 | != 0)) | |
e9f53129 | 5375 | { |
6d6c25c8 AM |
5376 | /* Mark this as an overlay header. */ |
5377 | phdr[i].p_flags |= PF_OVERLAY; | |
e9f53129 | 5378 | |
6d6c25c8 AM |
5379 | if (htab->ovtab != NULL && htab->ovtab->size != 0 |
5380 | && htab->params->ovly_flavour != ovly_soft_icache) | |
5381 | { | |
5382 | bfd_byte *p = htab->ovtab->contents; | |
5383 | unsigned int off = o * 16 + 8; | |
5384 | ||
5385 | /* Write file_off into _ovly_table. */ | |
5386 | bfd_put_32 (htab->ovtab->owner, phdr[i].p_offset, p + off); | |
5387 | } | |
e9f53129 | 5388 | } |
6d6c25c8 AM |
5389 | /* Soft-icache has its file offset put in .ovl.init. */ |
5390 | if (htab->init != NULL && htab->init->size != 0) | |
5391 | { | |
5392 | bfd_vma val | |
5393 | = elf_section_data (htab->ovl_sec[0])->this_hdr.sh_offset; | |
cd4a7468 | 5394 | |
6d6c25c8 AM |
5395 | bfd_put_32 (htab->init->owner, val, htab->init->contents + 4); |
5396 | } | |
cd4a7468 | 5397 | } |
e9f53129 | 5398 | |
6d6c25c8 AM |
5399 | /* Round up p_filesz and p_memsz of PT_LOAD segments to multiples |
5400 | of 16. This should always be possible when using the standard | |
5401 | linker scripts, but don't create overlapping segments if | |
5402 | someone is playing games with linker scripts. */ | |
5403 | last = NULL; | |
5404 | for (i = count; i-- != 0; ) | |
5405 | if (phdr[i].p_type == PT_LOAD) | |
5406 | { | |
5407 | unsigned adjust; | |
e9f53129 | 5408 | |
6d6c25c8 AM |
5409 | adjust = -phdr[i].p_filesz & 15; |
5410 | if (adjust != 0 | |
5411 | && last != NULL | |
5412 | && (phdr[i].p_offset + phdr[i].p_filesz | |
5413 | > last->p_offset - adjust)) | |
5414 | break; | |
e9f53129 | 5415 | |
6d6c25c8 AM |
5416 | adjust = -phdr[i].p_memsz & 15; |
5417 | if (adjust != 0 | |
5418 | && last != NULL | |
5419 | && phdr[i].p_filesz != 0 | |
5420 | && phdr[i].p_vaddr + phdr[i].p_memsz > last->p_vaddr - adjust | |
5421 | && phdr[i].p_vaddr + phdr[i].p_memsz <= last->p_vaddr) | |
5422 | break; | |
e9f53129 | 5423 | |
6d6c25c8 AM |
5424 | if (phdr[i].p_filesz != 0) |
5425 | last = &phdr[i]; | |
5426 | } | |
e9f53129 | 5427 | |
6d6c25c8 AM |
5428 | if (i == (unsigned int) -1) |
5429 | for (i = count; i-- != 0; ) | |
5430 | if (phdr[i].p_type == PT_LOAD) | |
5431 | { | |
5432 | unsigned adjust; | |
e9f53129 | 5433 | |
6d6c25c8 AM |
5434 | adjust = -phdr[i].p_filesz & 15; |
5435 | phdr[i].p_filesz += adjust; | |
e9f53129 | 5436 | |
6d6c25c8 AM |
5437 | adjust = -phdr[i].p_memsz & 15; |
5438 | phdr[i].p_memsz += adjust; | |
5439 | } | |
5440 | } | |
e9f53129 | 5441 | |
6d6c25c8 | 5442 | return _bfd_elf_modify_headers (abfd, info); |
e9f53129 AM |
5443 | } |
5444 | ||
9cc305ec | 5445 | bfd_boolean |
fd361982 | 5446 | spu_elf_size_sections (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
9cc305ec TS |
5447 | { |
5448 | struct spu_link_hash_table *htab = spu_hash_table (info); | |
5449 | if (htab->params->emit_fixups) | |
5450 | { | |
5451 | asection *sfixup = htab->sfixup; | |
5452 | int fixup_count = 0; | |
5453 | bfd *ibfd; | |
5454 | size_t size; | |
5455 | ||
c72f2fb2 | 5456 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
9cc305ec TS |
5457 | { |
5458 | asection *isec; | |
5459 | ||
5460 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
5461 | continue; | |
5462 | ||
5463 | /* Walk over each section attached to the input bfd. */ | |
5464 | for (isec = ibfd->sections; isec != NULL; isec = isec->next) | |
5465 | { | |
5466 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
5467 | bfd_vma base_end; | |
5468 | ||
5469 | /* If there aren't any relocs, then there's nothing more | |
07d6d2b8 | 5470 | to do. */ |
29c70241 AM |
5471 | if ((isec->flags & SEC_ALLOC) == 0 |
5472 | || (isec->flags & SEC_RELOC) == 0 | |
9cc305ec TS |
5473 | || isec->reloc_count == 0) |
5474 | continue; | |
5475 | ||
5476 | /* Get the relocs. */ | |
5477 | internal_relocs = | |
5478 | _bfd_elf_link_read_relocs (ibfd, isec, NULL, NULL, | |
5479 | info->keep_memory); | |
5480 | if (internal_relocs == NULL) | |
5481 | return FALSE; | |
5482 | ||
5483 | /* 1 quadword can contain up to 4 R_SPU_ADDR32 | |
07d6d2b8 AM |
5484 | relocations. They are stored in a single word by |
5485 | saving the upper 28 bits of the address and setting the | |
5486 | lower 4 bits to a bit mask of the words that have the | |
5487 | relocation. BASE_END keeps track of the next quadword. */ | |
9cc305ec TS |
5488 | irela = internal_relocs; |
5489 | irelaend = irela + isec->reloc_count; | |
5490 | base_end = 0; | |
5491 | for (; irela < irelaend; irela++) | |
5492 | if (ELF32_R_TYPE (irela->r_info) == R_SPU_ADDR32 | |
5493 | && irela->r_offset >= base_end) | |
5494 | { | |
5495 | base_end = (irela->r_offset & ~(bfd_vma) 15) + 16; | |
5496 | fixup_count++; | |
5497 | } | |
5498 | } | |
5499 | } | |
5500 | ||
5501 | /* We always have a NULL fixup as a sentinel */ | |
5502 | size = (fixup_count + 1) * FIXUP_RECORD_SIZE; | |
fd361982 | 5503 | if (!bfd_set_section_size (sfixup, size)) |
9cc305ec TS |
5504 | return FALSE; |
5505 | sfixup->contents = (bfd_byte *) bfd_zalloc (info->input_bfds, size); | |
5506 | if (sfixup->contents == NULL) | |
5507 | return FALSE; | |
5508 | } | |
5509 | return TRUE; | |
5510 | } | |
5511 | ||
6d00b590 | 5512 | #define TARGET_BIG_SYM spu_elf32_vec |
e9f53129 AM |
5513 | #define TARGET_BIG_NAME "elf32-spu" |
5514 | #define ELF_ARCH bfd_arch_spu | |
ae95ffa6 | 5515 | #define ELF_TARGET_ID SPU_ELF_DATA |
e9f53129 AM |
5516 | #define ELF_MACHINE_CODE EM_SPU |
5517 | /* This matches the alignment need for DMA. */ | |
5518 | #define ELF_MAXPAGESIZE 0x80 | |
07d6d2b8 | 5519 | #define elf_backend_rela_normal 1 |
e9f53129 AM |
5520 | #define elf_backend_can_gc_sections 1 |
5521 | ||
5522 | #define bfd_elf32_bfd_reloc_type_lookup spu_elf_reloc_type_lookup | |
ad2adbc8 | 5523 | #define bfd_elf32_bfd_reloc_name_lookup spu_elf_reloc_name_lookup |
e9f53129 | 5524 | #define elf_info_to_howto spu_elf_info_to_howto |
ece5ef60 | 5525 | #define elf_backend_count_relocs spu_elf_count_relocs |
e9f53129 | 5526 | #define elf_backend_relocate_section spu_elf_relocate_section |
29c70241 | 5527 | #define elf_backend_finish_dynamic_sections spu_elf_finish_dynamic_sections |
e9f53129 | 5528 | #define elf_backend_symbol_processing spu_elf_backend_symbol_processing |
c1b2796f | 5529 | #define elf_backend_link_output_symbol_hook spu_elf_output_symbol_hook |
124b52c6 | 5530 | #define elf_backend_object_p spu_elf_object_p |
e9f53129 AM |
5531 | #define bfd_elf32_new_section_hook spu_elf_new_section_hook |
5532 | #define bfd_elf32_bfd_link_hash_table_create spu_elf_link_hash_table_create | |
e9f53129 AM |
5533 | |
5534 | #define elf_backend_additional_program_headers spu_elf_additional_program_headers | |
5535 | #define elf_backend_modify_segment_map spu_elf_modify_segment_map | |
6d6c25c8 | 5536 | #define elf_backend_modify_headers spu_elf_modify_headers |
ed7e9d0b | 5537 | #define elf_backend_init_file_header spu_elf_init_file_header |
7d3287cb | 5538 | #define elf_backend_fake_sections spu_elf_fake_sections |
e9f53129 | 5539 | #define elf_backend_special_sections spu_elf_special_sections |
49fa1e15 | 5540 | #define bfd_elf32_bfd_final_link spu_elf_final_link |
e9f53129 AM |
5541 | |
5542 | #include "elf32-target.h" |