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35c08157 | 1 | /* NDS32-specific support for 32-bit ELF. |
6f2750fe | 2 | Copyright (C) 2012-2016 Free Software Foundation, Inc. |
35c08157 KLC |
3 | Contributed by Andes Technology Corporation. |
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 | |
9 | the Free Software Foundation; either version 3 of the License, or | |
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 | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA | |
1c8f6a4d | 20 | 02110-1301, USA. */ |
35c08157 KLC |
21 | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "bfd_stdint.h" | |
26 | #include "bfdlink.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "libiberty.h" | |
30 | #include "bfd_stdint.h" | |
31 | #include "elf/nds32.h" | |
32 | #include "opcode/nds32.h" | |
33 | #include "elf32-nds32.h" | |
34 | #include "opcode/cgen.h" | |
35 | #include "../opcodes/nds32-opc.h" | |
36 | ||
37 | /* Relocation HOWTO functions. */ | |
38 | static bfd_reloc_status_type nds32_elf_ignore_reloc | |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
40 | static bfd_reloc_status_type nds32_elf_9_pcrel_reloc | |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
42 | static bfd_reloc_status_type nds32_elf_hi20_reloc | |
43 | (bfd *, arelent *, asymbol *, void *, | |
44 | asection *, bfd *, char **); | |
45 | static bfd_reloc_status_type nds32_elf_lo12_reloc | |
46 | (bfd *, arelent *, asymbol *, void *, | |
47 | asection *, bfd *, char **); | |
48 | static bfd_reloc_status_type nds32_elf_generic_reloc | |
49 | (bfd *, arelent *, asymbol *, void *, | |
50 | asection *, bfd *, char **); | |
51 | static bfd_reloc_status_type nds32_elf_sda15_reloc | |
52 | (bfd *, arelent *, asymbol *, void *, | |
53 | asection *, bfd *, char **); | |
54 | ||
55 | /* Helper functions for HOWTO. */ | |
56 | static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc | |
57 | (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma, | |
58 | asection *, bfd_vma, bfd_vma); | |
59 | static void nds32_elf_relocate_hi20 | |
60 | (bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, bfd_vma); | |
61 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_table_lookup | |
62 | (enum elf_nds32_reloc_type); | |
63 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
64 | (bfd *, bfd_reloc_code_real_type); | |
65 | ||
66 | /* Target hooks. */ | |
67 | static void nds32_info_to_howto_rel | |
68 | (bfd *, arelent *, Elf_Internal_Rela *dst); | |
69 | static void nds32_info_to_howto | |
70 | (bfd *, arelent *, Elf_Internal_Rela *dst); | |
71 | static bfd_boolean nds32_elf_add_symbol_hook | |
72 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **, | |
73 | flagword *, asection **, bfd_vma *); | |
74 | static bfd_boolean nds32_elf_relocate_section | |
75 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
76 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); | |
77 | static bfd_boolean nds32_elf_object_p (bfd *); | |
78 | static void nds32_elf_final_write_processing (bfd *, bfd_boolean); | |
79 | static bfd_boolean nds32_elf_set_private_flags (bfd *, flagword); | |
80 | static bfd_boolean nds32_elf_merge_private_bfd_data (bfd *, bfd *); | |
81 | static bfd_boolean nds32_elf_print_private_bfd_data (bfd *, void *); | |
82 | static bfd_boolean nds32_elf_gc_sweep_hook | |
83 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
84 | static bfd_boolean nds32_elf_check_relocs | |
85 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
86 | static asection *nds32_elf_gc_mark_hook | |
87 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
88 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
89 | static bfd_boolean nds32_elf_adjust_dynamic_symbol | |
90 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
91 | static bfd_boolean nds32_elf_size_dynamic_sections | |
92 | (bfd *, struct bfd_link_info *); | |
93 | static bfd_boolean nds32_elf_create_dynamic_sections | |
94 | (bfd *, struct bfd_link_info *); | |
95 | static bfd_boolean nds32_elf_finish_dynamic_sections | |
96 | (bfd *, struct bfd_link_info *info); | |
97 | static bfd_boolean nds32_elf_finish_dynamic_symbol | |
98 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
99 | Elf_Internal_Sym *); | |
1c8f6a4d | 100 | static bfd_boolean nds32_elf_mkobject (bfd *); |
35c08157 KLC |
101 | |
102 | /* Nds32 helper functions. */ | |
103 | static bfd_reloc_status_type nds32_elf_final_sda_base | |
104 | (bfd *, struct bfd_link_info *, bfd_vma *, bfd_boolean); | |
105 | static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *, void *); | |
106 | static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *, void *); | |
107 | static Elf_Internal_Rela *find_relocs_at_address | |
108 | (Elf_Internal_Rela *, Elf_Internal_Rela *, | |
109 | Elf_Internal_Rela *, enum elf_nds32_reloc_type); | |
110 | static bfd_vma calculate_memory_address | |
0c4bd9d9 KLC |
111 | (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); |
112 | static int nds32_get_section_contents (bfd *, asection *, | |
113 | bfd_byte **, bfd_boolean); | |
35c08157 | 114 | static bfd_boolean nds32_elf_ex9_build_hash_table |
0c4bd9d9 | 115 | (bfd *, asection *, struct bfd_link_info *); |
1c8f6a4d KLC |
116 | static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *); |
117 | static void nds32_elf_ex9_import_table (struct bfd_link_info *); | |
118 | static void nds32_elf_ex9_finish (struct bfd_link_info *); | |
119 | static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *); | |
35c08157 | 120 | static void nds32_elf_get_insn_with_reg |
1c8f6a4d | 121 | (Elf_Internal_Rela *, uint32_t, uint32_t *); |
35c08157 KLC |
122 | static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED, |
123 | Elf_Internal_Sym **); | |
124 | static bfd_boolean nds32_elf_ex9_replace_instruction | |
125 | (struct bfd_link_info *, bfd *, asection *); | |
126 | static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *, | |
127 | asection *); | |
1c8f6a4d | 128 | static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *); |
35c08157 | 129 | static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *); |
1c8f6a4d | 130 | static bfd_boolean nds32_elf_ifc_reloc (void); |
35c08157 KLC |
131 | static bfd_boolean nds32_relax_fp_as_gp |
132 | (struct bfd_link_info *link_info, bfd *abfd, asection *sec, | |
133 | Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend, | |
134 | Elf_Internal_Sym *isymbuf); | |
135 | static bfd_boolean nds32_fag_remove_unused_fpbase | |
136 | (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs, | |
137 | Elf_Internal_Rela *irelend); | |
1c8f6a4d KLC |
138 | static bfd_byte * |
139 | nds32_elf_get_relocated_section_contents (bfd *abfd, | |
140 | struct bfd_link_info *link_info, | |
141 | struct bfd_link_order *link_order, | |
142 | bfd_byte *data, | |
143 | bfd_boolean relocatable, | |
144 | asymbol **symbols); | |
35c08157 KLC |
145 | |
146 | enum | |
147 | { | |
148 | MACH_V1 = bfd_mach_n1h, | |
149 | MACH_V2 = bfd_mach_n1h_v2, | |
150 | MACH_V3 = bfd_mach_n1h_v3, | |
151 | MACH_V3M = bfd_mach_n1h_v3m | |
152 | }; | |
153 | ||
154 | #define MIN(a, b) ((a) > (b) ? (b) : (a)) | |
155 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
156 | ||
157 | /* The name of the dynamic interpreter. This is put in the .interp | |
158 | section. */ | |
159 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
160 | ||
161 | /* The nop opcode we use. */ | |
162 | #define NDS32_NOP32 0x40000009 | |
163 | #define NDS32_NOP16 0x9200 | |
164 | ||
165 | /* The size in bytes of an entry in the procedure linkage table. */ | |
166 | #define PLT_ENTRY_SIZE 24 | |
167 | #define PLT_HEADER_SIZE 24 | |
168 | ||
169 | /* The first entry in a procedure linkage table are reserved, | |
170 | and the initial contents are unimportant (we zero them out). | |
171 | Subsequent entries look like this. */ | |
172 | #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */ | |
173 | #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */ | |
174 | #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */ | |
175 | #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */ | |
176 | #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */ | |
177 | ||
178 | /* $ta is change to $r15 (from $r25). */ | |
179 | #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */ | |
180 | #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */ | |
181 | #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */ | |
182 | #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */ | |
183 | #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */ | |
184 | #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */ | |
185 | ||
186 | #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */ | |
187 | #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */ | |
188 | #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */ | |
189 | #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
190 | #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */ | |
191 | ||
192 | #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */ | |
193 | #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */ | |
194 | #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */ | |
195 | #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */ | |
196 | #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
197 | #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */ | |
198 | ||
1c8f6a4d KLC |
199 | /* These are macros used to get the relocation accurate value. */ |
200 | #define ACCURATE_8BIT_S1 (0x100) | |
201 | #define ACCURATE_U9BIT_S1 (0x400) | |
202 | #define ACCURATE_12BIT_S1 (0x2000) | |
203 | #define ACCURATE_14BIT_S1 (0x4000) | |
204 | #define ACCURATE_19BIT (0x40000) | |
205 | ||
206 | /* These are macros used to get the relocation conservative value. */ | |
207 | #define CONSERVATIVE_8BIT_S1 (0x100 - 4) | |
208 | #define CONSERVATIVE_14BIT_S1 (0x4000 - 4) | |
209 | #define CONSERVATIVE_16BIT_S1 (0x10000 - 4) | |
210 | #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4) | |
211 | /* These must be more conservative because the address may be in | |
212 | different segment. */ | |
213 | #define CONSERVATIVE_15BIT (0x4000 - 0x1000) | |
214 | #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000) | |
215 | #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000) | |
216 | #define CONSERVATIVE_19BIT (0x40000 - 0x1000) | |
217 | #define CONSERVATIVE_20BIT (0x80000 - 0x1000) | |
218 | ||
35c08157 KLC |
219 | /* Size of small data/bss sections, used to calculate SDA_BASE. */ |
220 | static long got_size = 0; | |
221 | static int is_SDA_BASE_set = 0; | |
222 | static int is_ITB_BASE_set = 0; | |
223 | ||
35c08157 KLC |
224 | /* Convert ELF-VER in eflags to string for debugging purpose. */ |
225 | static const char *const nds32_elfver_strtab[] = | |
226 | { | |
227 | "ELF-1.2", | |
228 | "ELF-1.3", | |
229 | "ELF-1.4", | |
230 | }; | |
231 | ||
232 | /* The nds32 linker needs to keep track of the number of relocs that it | |
233 | decides to copy in check_relocs for each symbol. This is so that | |
234 | it can discard PC relative relocs if it doesn't need them when | |
235 | linking with -Bsymbolic. We store the information in a field | |
236 | extending the regular ELF linker hash table. */ | |
237 | ||
238 | /* This structure keeps track of the number of PC relative relocs we | |
239 | have copied for a given symbol. */ | |
240 | ||
241 | struct elf_nds32_pcrel_relocs_copied | |
242 | { | |
243 | /* Next section. */ | |
244 | struct elf_nds32_pcrel_relocs_copied *next; | |
245 | /* A section in dynobj. */ | |
246 | asection *section; | |
247 | /* Number of relocs copied in this section. */ | |
248 | bfd_size_type count; | |
249 | }; | |
250 | ||
251 | /* The sh linker needs to keep track of the number of relocs that it | |
252 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
253 | This is so that it can later discard them if they are found to be | |
254 | unnecessary. We store the information in a field extending the | |
255 | regular ELF linker hash table. */ | |
256 | ||
257 | struct elf_nds32_dyn_relocs | |
258 | { | |
259 | struct elf_nds32_dyn_relocs *next; | |
260 | ||
261 | /* The input section of the reloc. */ | |
262 | asection *sec; | |
263 | ||
264 | /* Total number of relocs copied for the input section. */ | |
265 | bfd_size_type count; | |
266 | ||
267 | /* Number of pc-relative relocs copied for the input section. */ | |
268 | bfd_size_type pc_count; | |
269 | }; | |
270 | ||
271 | /* Nds32 ELF linker hash entry. */ | |
272 | ||
273 | struct elf_nds32_link_hash_entry | |
274 | { | |
275 | struct elf_link_hash_entry root; | |
276 | ||
277 | /* Track dynamic relocs copied for this symbol. */ | |
278 | struct elf_nds32_dyn_relocs *dyn_relocs; | |
1c8f6a4d KLC |
279 | |
280 | /* For checking relocation type. */ | |
281 | #define GOT_UNKNOWN 0 | |
282 | #define GOT_NORMAL 1 | |
283 | #define GOT_TLS_IE 2 | |
284 | unsigned int tls_type; | |
35c08157 KLC |
285 | }; |
286 | ||
287 | /* Get the nds32 ELF linker hash table from a link_info structure. */ | |
288 | ||
289 | #define FP_BASE_NAME "_FP_BASE_" | |
290 | static int check_start_export_sym = 0; | |
291 | static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */ | |
292 | ||
1c8f6a4d KLC |
293 | /* The offset for executable tls relaxation. */ |
294 | #define TP_OFFSET 0x0 | |
295 | ||
296 | struct elf_nds32_obj_tdata | |
297 | { | |
298 | struct elf_obj_tdata root; | |
299 | ||
300 | /* tls_type for each local got entry. */ | |
301 | char *local_got_tls_type; | |
302 | }; | |
303 | ||
304 | #define elf_nds32_tdata(bfd) \ | |
305 | ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any) | |
306 | ||
307 | #define elf32_nds32_local_got_tls_type(bfd) \ | |
308 | (elf_nds32_tdata (bfd)->local_got_tls_type) | |
309 | ||
310 | #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent)) | |
311 | ||
312 | static bfd_boolean | |
313 | nds32_elf_mkobject (bfd *abfd) | |
314 | { | |
315 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata), | |
316 | NDS32_ELF_DATA); | |
317 | } | |
318 | ||
35c08157 KLC |
319 | /* Relocations used for relocation. */ |
320 | static reloc_howto_type nds32_elf_howto_table[] = | |
321 | { | |
322 | /* This reloc does nothing. */ | |
323 | HOWTO (R_NDS32_NONE, /* type */ | |
324 | 0, /* rightshift */ | |
6346d5ca AM |
325 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
326 | 0, /* bitsize */ | |
35c08157 KLC |
327 | FALSE, /* pc_relative */ |
328 | 0, /* bitpos */ | |
6346d5ca | 329 | complain_overflow_dont, /* complain_on_overflow */ |
35c08157 KLC |
330 | bfd_elf_generic_reloc, /* special_function */ |
331 | "R_NDS32_NONE", /* name */ | |
332 | FALSE, /* partial_inplace */ | |
333 | 0, /* src_mask */ | |
334 | 0, /* dst_mask */ | |
335 | FALSE), /* pcrel_offset */ | |
336 | ||
337 | /* A 16 bit absolute relocation. */ | |
338 | HOWTO (R_NDS32_16, /* type */ | |
339 | 0, /* rightshift */ | |
340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
341 | 16, /* bitsize */ | |
342 | FALSE, /* pc_relative */ | |
343 | 0, /* bitpos */ | |
344 | complain_overflow_bitfield, /* complain_on_overflow */ | |
345 | nds32_elf_generic_reloc, /* special_function */ | |
346 | "R_NDS32_16", /* name */ | |
347 | FALSE, /* partial_inplace */ | |
348 | 0xffff, /* src_mask */ | |
349 | 0xffff, /* dst_mask */ | |
350 | FALSE), /* pcrel_offset */ | |
351 | ||
352 | /* A 32 bit absolute relocation. */ | |
353 | HOWTO (R_NDS32_32, /* type */ | |
354 | 0, /* rightshift */ | |
355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
356 | 32, /* bitsize */ | |
357 | FALSE, /* pc_relative */ | |
358 | 0, /* bitpos */ | |
359 | complain_overflow_bitfield, /* complain_on_overflow */ | |
360 | nds32_elf_generic_reloc, /* special_function */ | |
361 | "R_NDS32_32", /* name */ | |
362 | FALSE, /* partial_inplace */ | |
363 | 0xffffffff, /* src_mask */ | |
364 | 0xffffffff, /* dst_mask */ | |
365 | FALSE), /* pcrel_offset */ | |
366 | ||
367 | /* A 20 bit address. */ | |
368 | HOWTO (R_NDS32_20, /* type */ | |
369 | 0, /* rightshift */ | |
370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
371 | 20, /* bitsize */ | |
372 | FALSE, /* pc_relative */ | |
373 | 0, /* bitpos */ | |
374 | complain_overflow_unsigned, /* complain_on_overflow */ | |
375 | nds32_elf_generic_reloc, /* special_function */ | |
376 | "R_NDS32_20", /* name */ | |
377 | FALSE, /* partial_inplace */ | |
378 | 0xfffff, /* src_mask */ | |
379 | 0xfffff, /* dst_mask */ | |
380 | FALSE), /* pcrel_offset */ | |
381 | ||
382 | /* An PC Relative 9-bit relocation, shifted by 2. | |
383 | This reloc is complicated because relocations are relative to pc & -4. | |
384 | i.e. branches in the right insn slot use the address of the left insn | |
385 | slot for pc. */ | |
386 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
387 | Branch relaxing in the assembler can store the addend in the insn, | |
388 | and if bfd_install_relocation gets called the addend may get added | |
389 | again. */ | |
390 | HOWTO (R_NDS32_9_PCREL, /* type */ | |
391 | 1, /* rightshift */ | |
392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
393 | 8, /* bitsize */ | |
394 | TRUE, /* pc_relative */ | |
395 | 0, /* bitpos */ | |
396 | complain_overflow_signed, /* complain_on_overflow */ | |
397 | nds32_elf_9_pcrel_reloc, /* special_function */ | |
398 | "R_NDS32_9_PCREL", /* name */ | |
399 | FALSE, /* partial_inplace */ | |
400 | 0xff, /* src_mask */ | |
401 | 0xff, /* dst_mask */ | |
402 | TRUE), /* pcrel_offset */ | |
403 | ||
404 | /* A relative 15 bit relocation, right shifted by 1. */ | |
405 | HOWTO (R_NDS32_15_PCREL, /* type */ | |
406 | 1, /* rightshift */ | |
407 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
408 | 14, /* bitsize */ | |
409 | TRUE, /* pc_relative */ | |
410 | 0, /* bitpos */ | |
411 | complain_overflow_signed, /* complain_on_overflow */ | |
412 | bfd_elf_generic_reloc, /* special_function */ | |
413 | "R_NDS32_15_PCREL", /* name */ | |
414 | FALSE, /* partial_inplace */ | |
415 | 0x3fff, /* src_mask */ | |
416 | 0x3fff, /* dst_mask */ | |
417 | TRUE), /* pcrel_offset */ | |
418 | ||
419 | /* A relative 17 bit relocation, right shifted by 1. */ | |
420 | HOWTO (R_NDS32_17_PCREL, /* type */ | |
421 | 1, /* rightshift */ | |
422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
423 | 16, /* bitsize */ | |
424 | TRUE, /* pc_relative */ | |
425 | 0, /* bitpos */ | |
426 | complain_overflow_signed, /* complain_on_overflow */ | |
427 | bfd_elf_generic_reloc, /* special_function */ | |
428 | "R_NDS32_17_PCREL", /* name */ | |
429 | FALSE, /* partial_inplace */ | |
430 | 0xffff, /* src_mask */ | |
431 | 0xffff, /* dst_mask */ | |
432 | TRUE), /* pcrel_offset */ | |
433 | ||
434 | /* A relative 25 bit relocation, right shifted by 1. */ | |
435 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
436 | Branch relaxing in the assembler can store the addend in the insn, | |
437 | and if bfd_install_relocation gets called the addend may get added | |
438 | again. */ | |
439 | HOWTO (R_NDS32_25_PCREL, /* type */ | |
440 | 1, /* rightshift */ | |
441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
442 | 24, /* bitsize */ | |
443 | TRUE, /* pc_relative */ | |
444 | 0, /* bitpos */ | |
445 | complain_overflow_signed, /* complain_on_overflow */ | |
446 | bfd_elf_generic_reloc, /* special_function */ | |
447 | "R_NDS32_25_PCREL", /* name */ | |
448 | FALSE, /* partial_inplace */ | |
449 | 0xffffff, /* src_mask */ | |
450 | 0xffffff, /* dst_mask */ | |
451 | TRUE), /* pcrel_offset */ | |
452 | ||
453 | /* High 20 bits of address when lower 12 is or'd in. */ | |
454 | HOWTO (R_NDS32_HI20, /* type */ | |
455 | 12, /* rightshift */ | |
456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
457 | 20, /* bitsize */ | |
458 | FALSE, /* pc_relative */ | |
459 | 0, /* bitpos */ | |
460 | complain_overflow_dont,/* complain_on_overflow */ | |
461 | nds32_elf_hi20_reloc, /* special_function */ | |
462 | "R_NDS32_HI20", /* name */ | |
463 | FALSE, /* partial_inplace */ | |
464 | 0x000fffff, /* src_mask */ | |
465 | 0x000fffff, /* dst_mask */ | |
466 | FALSE), /* pcrel_offset */ | |
467 | ||
468 | /* Lower 12 bits of address. */ | |
469 | HOWTO (R_NDS32_LO12S3, /* type */ | |
470 | 3, /* rightshift */ | |
471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
472 | 9, /* bitsize */ | |
473 | FALSE, /* pc_relative */ | |
474 | 0, /* bitpos */ | |
475 | complain_overflow_dont,/* complain_on_overflow */ | |
476 | nds32_elf_lo12_reloc, /* special_function */ | |
477 | "R_NDS32_LO12S3", /* name */ | |
478 | FALSE, /* partial_inplace */ | |
479 | 0x000001ff, /* src_mask */ | |
480 | 0x000001ff, /* dst_mask */ | |
481 | FALSE), /* pcrel_offset */ | |
482 | ||
483 | /* Lower 12 bits of address. */ | |
484 | HOWTO (R_NDS32_LO12S2, /* type */ | |
485 | 2, /* rightshift */ | |
486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
487 | 10, /* bitsize */ | |
488 | FALSE, /* pc_relative */ | |
489 | 0, /* bitpos */ | |
490 | complain_overflow_dont,/* complain_on_overflow */ | |
491 | nds32_elf_lo12_reloc, /* special_function */ | |
492 | "R_NDS32_LO12S2", /* name */ | |
493 | FALSE, /* partial_inplace */ | |
494 | 0x000003ff, /* src_mask */ | |
495 | 0x000003ff, /* dst_mask */ | |
496 | FALSE), /* pcrel_offset */ | |
497 | ||
498 | /* Lower 12 bits of address. */ | |
499 | HOWTO (R_NDS32_LO12S1, /* type */ | |
500 | 1, /* rightshift */ | |
501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
502 | 11, /* bitsize */ | |
503 | FALSE, /* pc_relative */ | |
504 | 0, /* bitpos */ | |
505 | complain_overflow_dont,/* complain_on_overflow */ | |
506 | nds32_elf_lo12_reloc, /* special_function */ | |
507 | "R_NDS32_LO12S1", /* name */ | |
508 | FALSE, /* partial_inplace */ | |
509 | 0x000007ff, /* src_mask */ | |
510 | 0x000007ff, /* dst_mask */ | |
511 | FALSE), /* pcrel_offset */ | |
512 | ||
513 | /* Lower 12 bits of address. */ | |
514 | HOWTO (R_NDS32_LO12S0, /* type */ | |
515 | 0, /* rightshift */ | |
516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
517 | 12, /* bitsize */ | |
518 | FALSE, /* pc_relative */ | |
519 | 0, /* bitpos */ | |
520 | complain_overflow_dont,/* complain_on_overflow */ | |
521 | nds32_elf_lo12_reloc, /* special_function */ | |
522 | "R_NDS32_LO12S0", /* name */ | |
523 | FALSE, /* partial_inplace */ | |
524 | 0x00000fff, /* src_mask */ | |
525 | 0x00000fff, /* dst_mask */ | |
526 | FALSE), /* pcrel_offset */ | |
527 | ||
528 | /* Small data area 15 bits offset. */ | |
529 | HOWTO (R_NDS32_SDA15S3, /* type */ | |
530 | 3, /* rightshift */ | |
531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
532 | 15, /* bitsize */ | |
533 | FALSE, /* pc_relative */ | |
534 | 0, /* bitpos */ | |
535 | complain_overflow_signed, /* complain_on_overflow */ | |
536 | nds32_elf_sda15_reloc, /* special_function */ | |
537 | "R_NDS32_SDA15S3", /* name */ | |
538 | FALSE, /* partial_inplace */ | |
539 | 0x00007fff, /* src_mask */ | |
540 | 0x00007fff, /* dst_mask */ | |
541 | FALSE), /* pcrel_offset */ | |
542 | ||
543 | /* Small data area 15 bits offset. */ | |
544 | HOWTO (R_NDS32_SDA15S2, /* type */ | |
545 | 2, /* rightshift */ | |
546 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
547 | 15, /* bitsize */ | |
548 | FALSE, /* pc_relative */ | |
549 | 0, /* bitpos */ | |
550 | complain_overflow_signed, /* complain_on_overflow */ | |
551 | nds32_elf_sda15_reloc, /* special_function */ | |
552 | "R_NDS32_SDA15S2", /* name */ | |
553 | FALSE, /* partial_inplace */ | |
554 | 0x00007fff, /* src_mask */ | |
555 | 0x00007fff, /* dst_mask */ | |
556 | FALSE), /* pcrel_offset */ | |
557 | ||
558 | /* Small data area 15 bits offset. */ | |
559 | HOWTO (R_NDS32_SDA15S1, /* type */ | |
560 | 1, /* rightshift */ | |
561 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
562 | 15, /* bitsize */ | |
563 | FALSE, /* pc_relative */ | |
564 | 0, /* bitpos */ | |
565 | complain_overflow_signed, /* complain_on_overflow */ | |
566 | nds32_elf_sda15_reloc, /* special_function */ | |
567 | "R_NDS32_SDA15S1", /* name */ | |
568 | FALSE, /* partial_inplace */ | |
569 | 0x00007fff, /* src_mask */ | |
570 | 0x00007fff, /* dst_mask */ | |
571 | FALSE), /* pcrel_offset */ | |
572 | ||
573 | /* Small data area 15 bits offset. */ | |
574 | HOWTO (R_NDS32_SDA15S0, /* type */ | |
575 | 0, /* rightshift */ | |
576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
577 | 15, /* bitsize */ | |
578 | FALSE, /* pc_relative */ | |
579 | 0, /* bitpos */ | |
580 | complain_overflow_signed, /* complain_on_overflow */ | |
581 | nds32_elf_sda15_reloc, /* special_function */ | |
582 | "R_NDS32_SDA15S0", /* name */ | |
583 | FALSE, /* partial_inplace */ | |
584 | 0x00007fff, /* src_mask */ | |
585 | 0x00007fff, /* dst_mask */ | |
586 | FALSE), /* pcrel_offset */ | |
587 | ||
588 | /* GNU extension to record C++ vtable hierarchy */ | |
589 | HOWTO (R_NDS32_GNU_VTINHERIT, /* type */ | |
590 | 0, /* rightshift */ | |
591 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
592 | 0, /* bitsize */ | |
593 | FALSE, /* pc_relative */ | |
594 | 0, /* bitpos */ | |
595 | complain_overflow_dont,/* complain_on_overflow */ | |
596 | NULL, /* special_function */ | |
597 | "R_NDS32_GNU_VTINHERIT", /* name */ | |
598 | FALSE, /* partial_inplace */ | |
599 | 0, /* src_mask */ | |
600 | 0, /* dst_mask */ | |
601 | FALSE), /* pcrel_offset */ | |
602 | ||
603 | /* GNU extension to record C++ vtable member usage */ | |
604 | HOWTO (R_NDS32_GNU_VTENTRY, /* type */ | |
605 | 0, /* rightshift */ | |
606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
607 | 0, /* bitsize */ | |
608 | FALSE, /* pc_relative */ | |
609 | 0, /* bitpos */ | |
610 | complain_overflow_dont,/* complain_on_overflow */ | |
611 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
612 | "R_NDS32_GNU_VTENTRY", /* name */ | |
613 | FALSE, /* partial_inplace */ | |
614 | 0, /* src_mask */ | |
615 | 0, /* dst_mask */ | |
616 | FALSE), /* pcrel_offset */ | |
617 | ||
618 | /* A 16 bit absolute relocation. */ | |
619 | HOWTO (R_NDS32_16_RELA, /* type */ | |
620 | 0, /* rightshift */ | |
621 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
622 | 16, /* bitsize */ | |
623 | FALSE, /* pc_relative */ | |
624 | 0, /* bitpos */ | |
625 | complain_overflow_bitfield, /* complain_on_overflow */ | |
626 | bfd_elf_generic_reloc, /* special_function */ | |
627 | "R_NDS32_16_RELA", /* name */ | |
628 | FALSE, /* partial_inplace */ | |
629 | 0xffff, /* src_mask */ | |
630 | 0xffff, /* dst_mask */ | |
631 | FALSE), /* pcrel_offset */ | |
632 | ||
633 | /* A 32 bit absolute relocation. */ | |
634 | HOWTO (R_NDS32_32_RELA, /* type */ | |
635 | 0, /* rightshift */ | |
636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
637 | 32, /* bitsize */ | |
638 | FALSE, /* pc_relative */ | |
639 | 0, /* bitpos */ | |
640 | complain_overflow_bitfield, /* complain_on_overflow */ | |
641 | bfd_elf_generic_reloc, /* special_function */ | |
642 | "R_NDS32_32_RELA", /* name */ | |
643 | FALSE, /* partial_inplace */ | |
644 | 0xffffffff, /* src_mask */ | |
645 | 0xffffffff, /* dst_mask */ | |
646 | FALSE), /* pcrel_offset */ | |
647 | ||
648 | /* A 20 bit address. */ | |
649 | HOWTO (R_NDS32_20_RELA, /* type */ | |
650 | 0, /* rightshift */ | |
651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
652 | 20, /* bitsize */ | |
653 | FALSE, /* pc_relative */ | |
654 | 0, /* bitpos */ | |
655 | complain_overflow_signed, /* complain_on_overflow */ | |
656 | bfd_elf_generic_reloc, /* special_function */ | |
657 | "R_NDS32_20_RELA", /* name */ | |
658 | FALSE, /* partial_inplace */ | |
659 | 0xfffff, /* src_mask */ | |
660 | 0xfffff, /* dst_mask */ | |
661 | FALSE), /* pcrel_offset */ | |
662 | ||
663 | HOWTO (R_NDS32_9_PCREL_RELA, /* type */ | |
664 | 1, /* rightshift */ | |
665 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
666 | 8, /* bitsize */ | |
667 | TRUE, /* pc_relative */ | |
668 | 0, /* bitpos */ | |
669 | complain_overflow_signed, /* complain_on_overflow */ | |
670 | bfd_elf_generic_reloc, /* special_function */ | |
671 | "R_NDS32_9_PCREL_RELA",/* name */ | |
672 | FALSE, /* partial_inplace */ | |
673 | 0xff, /* src_mask */ | |
674 | 0xff, /* dst_mask */ | |
675 | TRUE), /* pcrel_offset */ | |
676 | ||
677 | /* A relative 15 bit relocation, right shifted by 1. */ | |
678 | HOWTO (R_NDS32_15_PCREL_RELA, /* type */ | |
679 | 1, /* rightshift */ | |
680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
681 | 14, /* bitsize */ | |
682 | TRUE, /* pc_relative */ | |
683 | 0, /* bitpos */ | |
684 | complain_overflow_signed, /* complain_on_overflow */ | |
685 | bfd_elf_generic_reloc, /* special_function */ | |
686 | "R_NDS32_15_PCREL_RELA", /* name */ | |
687 | FALSE, /* partial_inplace */ | |
688 | 0x3fff, /* src_mask */ | |
689 | 0x3fff, /* dst_mask */ | |
690 | TRUE), /* pcrel_offset */ | |
691 | ||
692 | /* A relative 17 bit relocation, right shifted by 1. */ | |
693 | HOWTO (R_NDS32_17_PCREL_RELA, /* type */ | |
694 | 1, /* rightshift */ | |
695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
696 | 16, /* bitsize */ | |
697 | TRUE, /* pc_relative */ | |
698 | 0, /* bitpos */ | |
699 | complain_overflow_signed, /* complain_on_overflow */ | |
700 | bfd_elf_generic_reloc, /* special_function */ | |
701 | "R_NDS32_17_PCREL_RELA", /* name */ | |
702 | FALSE, /* partial_inplace */ | |
703 | 0xffff, /* src_mask */ | |
704 | 0xffff, /* dst_mask */ | |
705 | TRUE), /* pcrel_offset */ | |
706 | ||
707 | /* A relative 25 bit relocation, right shifted by 2. */ | |
708 | HOWTO (R_NDS32_25_PCREL_RELA, /* type */ | |
709 | 1, /* rightshift */ | |
710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
711 | 24, /* bitsize */ | |
712 | TRUE, /* pc_relative */ | |
713 | 0, /* bitpos */ | |
714 | complain_overflow_signed, /* complain_on_overflow */ | |
715 | bfd_elf_generic_reloc, /* special_function */ | |
716 | "R_NDS32_25_PCREL_RELA", /* name */ | |
717 | FALSE, /* partial_inplace */ | |
718 | 0xffffff, /* src_mask */ | |
719 | 0xffffff, /* dst_mask */ | |
720 | TRUE), /* pcrel_offset */ | |
721 | ||
722 | /* High 20 bits of address when lower 16 is or'd in. */ | |
723 | HOWTO (R_NDS32_HI20_RELA, /* type */ | |
724 | 12, /* rightshift */ | |
725 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
726 | 20, /* bitsize */ | |
727 | FALSE, /* pc_relative */ | |
728 | 0, /* bitpos */ | |
729 | complain_overflow_dont,/* complain_on_overflow */ | |
730 | bfd_elf_generic_reloc, /* special_function */ | |
731 | "R_NDS32_HI20_RELA", /* name */ | |
732 | FALSE, /* partial_inplace */ | |
733 | 0x000fffff, /* src_mask */ | |
734 | 0x000fffff, /* dst_mask */ | |
735 | FALSE), /* pcrel_offset */ | |
736 | ||
737 | /* Lower 12 bits of address. */ | |
738 | HOWTO (R_NDS32_LO12S3_RELA, /* type */ | |
739 | 3, /* rightshift */ | |
740 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
741 | 9, /* bitsize */ | |
742 | FALSE, /* pc_relative */ | |
743 | 0, /* bitpos */ | |
744 | complain_overflow_dont,/* complain_on_overflow */ | |
745 | bfd_elf_generic_reloc, /* special_function */ | |
746 | "R_NDS32_LO12S3_RELA", /* name */ | |
747 | FALSE, /* partial_inplace */ | |
748 | 0x000001ff, /* src_mask */ | |
749 | 0x000001ff, /* dst_mask */ | |
750 | FALSE), /* pcrel_offset */ | |
751 | ||
752 | /* Lower 12 bits of address. */ | |
753 | HOWTO (R_NDS32_LO12S2_RELA, /* type */ | |
754 | 2, /* rightshift */ | |
755 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
756 | 10, /* bitsize */ | |
757 | FALSE, /* pc_relative */ | |
758 | 0, /* bitpos */ | |
759 | complain_overflow_dont,/* complain_on_overflow */ | |
760 | bfd_elf_generic_reloc, /* special_function */ | |
761 | "R_NDS32_LO12S2_RELA", /* name */ | |
762 | FALSE, /* partial_inplace */ | |
763 | 0x000003ff, /* src_mask */ | |
764 | 0x000003ff, /* dst_mask */ | |
765 | FALSE), /* pcrel_offset */ | |
766 | ||
767 | /* Lower 12 bits of address. */ | |
768 | HOWTO (R_NDS32_LO12S1_RELA, /* type */ | |
769 | 1, /* rightshift */ | |
770 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
771 | 11, /* bitsize */ | |
772 | FALSE, /* pc_relative */ | |
773 | 0, /* bitpos */ | |
774 | complain_overflow_dont,/* complain_on_overflow */ | |
775 | bfd_elf_generic_reloc, /* special_function */ | |
776 | "R_NDS32_LO12S1_RELA", /* name */ | |
777 | FALSE, /* partial_inplace */ | |
778 | 0x000007ff, /* src_mask */ | |
779 | 0x000007ff, /* dst_mask */ | |
780 | FALSE), /* pcrel_offset */ | |
781 | ||
782 | /* Lower 12 bits of address. */ | |
783 | HOWTO (R_NDS32_LO12S0_RELA, /* type */ | |
784 | 0, /* rightshift */ | |
785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
786 | 12, /* bitsize */ | |
787 | FALSE, /* pc_relative */ | |
788 | 0, /* bitpos */ | |
789 | complain_overflow_dont,/* complain_on_overflow */ | |
790 | bfd_elf_generic_reloc, /* special_function */ | |
791 | "R_NDS32_LO12S0_RELA", /* name */ | |
792 | FALSE, /* partial_inplace */ | |
793 | 0x00000fff, /* src_mask */ | |
794 | 0x00000fff, /* dst_mask */ | |
795 | FALSE), /* pcrel_offset */ | |
796 | ||
797 | /* Small data area 15 bits offset. */ | |
798 | HOWTO (R_NDS32_SDA15S3_RELA, /* type */ | |
799 | 3, /* rightshift */ | |
800 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
801 | 15, /* bitsize */ | |
802 | FALSE, /* pc_relative */ | |
803 | 0, /* bitpos */ | |
804 | complain_overflow_signed, /* complain_on_overflow */ | |
805 | bfd_elf_generic_reloc, /* special_function */ | |
806 | "R_NDS32_SDA15S3_RELA",/* name */ | |
807 | FALSE, /* partial_inplace */ | |
808 | 0x00007fff, /* src_mask */ | |
809 | 0x00007fff, /* dst_mask */ | |
810 | FALSE), /* pcrel_offset */ | |
811 | ||
812 | /* Small data area 15 bits offset. */ | |
813 | HOWTO (R_NDS32_SDA15S2_RELA, /* type */ | |
814 | 2, /* rightshift */ | |
815 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
816 | 15, /* bitsize */ | |
817 | FALSE, /* pc_relative */ | |
818 | 0, /* bitpos */ | |
819 | complain_overflow_signed, /* complain_on_overflow */ | |
820 | bfd_elf_generic_reloc, /* special_function */ | |
821 | "R_NDS32_SDA15S2_RELA",/* name */ | |
822 | FALSE, /* partial_inplace */ | |
823 | 0x00007fff, /* src_mask */ | |
824 | 0x00007fff, /* dst_mask */ | |
825 | FALSE), /* pcrel_offset */ | |
826 | ||
827 | HOWTO (R_NDS32_SDA15S1_RELA, /* type */ | |
828 | 1, /* rightshift */ | |
829 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
830 | 15, /* bitsize */ | |
831 | FALSE, /* pc_relative */ | |
832 | 0, /* bitpos */ | |
833 | complain_overflow_signed, /* complain_on_overflow */ | |
834 | bfd_elf_generic_reloc, /* special_function */ | |
835 | "R_NDS32_SDA15S1_RELA",/* name */ | |
836 | FALSE, /* partial_inplace */ | |
837 | 0x00007fff, /* src_mask */ | |
838 | 0x00007fff, /* dst_mask */ | |
839 | FALSE), /* pcrel_offset */ | |
840 | ||
841 | HOWTO (R_NDS32_SDA15S0_RELA, /* type */ | |
842 | 0, /* rightshift */ | |
843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
844 | 15, /* bitsize */ | |
845 | FALSE, /* pc_relative */ | |
846 | 0, /* bitpos */ | |
847 | complain_overflow_signed, /* complain_on_overflow */ | |
848 | bfd_elf_generic_reloc, /* special_function */ | |
849 | "R_NDS32_SDA15S0_RELA",/* name */ | |
850 | FALSE, /* partial_inplace */ | |
851 | 0x00007fff, /* src_mask */ | |
852 | 0x00007fff, /* dst_mask */ | |
853 | FALSE), /* pcrel_offset */ | |
854 | ||
855 | /* GNU extension to record C++ vtable hierarchy */ | |
856 | HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */ | |
857 | 0, /* rightshift */ | |
858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
859 | 0, /* bitsize */ | |
860 | FALSE, /* pc_relative */ | |
861 | 0, /* bitpos */ | |
862 | complain_overflow_dont,/* complain_on_overflow */ | |
863 | NULL, /* special_function */ | |
864 | "R_NDS32_RELA_GNU_VTINHERIT", /* name */ | |
865 | FALSE, /* partial_inplace */ | |
866 | 0, /* src_mask */ | |
867 | 0, /* dst_mask */ | |
868 | FALSE), /* pcrel_offset */ | |
869 | ||
870 | /* GNU extension to record C++ vtable member usage */ | |
871 | HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */ | |
872 | 0, /* rightshift */ | |
873 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
874 | 0, /* bitsize */ | |
875 | FALSE, /* pc_relative */ | |
876 | 0, /* bitpos */ | |
877 | complain_overflow_dont,/* complain_on_overflow */ | |
878 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
879 | "R_NDS32_RELA_GNU_VTENTRY", /* name */ | |
880 | FALSE, /* partial_inplace */ | |
881 | 0, /* src_mask */ | |
882 | 0, /* dst_mask */ | |
883 | FALSE), /* pcrel_offset */ | |
884 | ||
885 | /* Like R_NDS32_20, but referring to the GOT table entry for | |
886 | the symbol. */ | |
887 | HOWTO (R_NDS32_GOT20, /* type */ | |
888 | 0, /* rightshift */ | |
889 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
890 | 20, /* bitsize */ | |
891 | FALSE, /* pc_relative */ | |
892 | 0, /* bitpos */ | |
893 | complain_overflow_signed, /* complain_on_overflow */ | |
894 | bfd_elf_generic_reloc, /* special_function */ | |
895 | "R_NDS32_GOT20", /* name */ | |
896 | FALSE, /* partial_inplace */ | |
897 | 0xfffff, /* src_mask */ | |
898 | 0xfffff, /* dst_mask */ | |
899 | FALSE), /* pcrel_offset */ | |
900 | ||
901 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
902 | entry for the symbol. */ | |
903 | HOWTO (R_NDS32_25_PLTREL, /* type */ | |
904 | 1, /* rightshift */ | |
905 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
906 | 24, /* bitsize */ | |
907 | TRUE, /* pc_relative */ | |
908 | 0, /* bitpos */ | |
909 | complain_overflow_signed, /* complain_on_overflow */ | |
910 | bfd_elf_generic_reloc, /* special_function */ | |
911 | "R_NDS32_25_PLTREL", /* name */ | |
912 | FALSE, /* partial_inplace */ | |
913 | 0xffffff, /* src_mask */ | |
914 | 0xffffff, /* dst_mask */ | |
915 | TRUE), /* pcrel_offset */ | |
916 | ||
917 | /* This is used only by the dynamic linker. The symbol should exist | |
918 | both in the object being run and in some shared library. The | |
919 | dynamic linker copies the data addressed by the symbol from the | |
920 | shared library into the object, because the object being | |
921 | run has to have the data at some particular address. */ | |
922 | HOWTO (R_NDS32_COPY, /* type */ | |
923 | 0, /* rightshift */ | |
924 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
925 | 32, /* bitsize */ | |
926 | FALSE, /* pc_relative */ | |
927 | 0, /* bitpos */ | |
928 | complain_overflow_bitfield, /* complain_on_overflow */ | |
929 | bfd_elf_generic_reloc, /* special_function */ | |
930 | "R_NDS32_COPY", /* name */ | |
931 | FALSE, /* partial_inplace */ | |
932 | 0xffffffff, /* src_mask */ | |
933 | 0xffffffff, /* dst_mask */ | |
934 | FALSE), /* pcrel_offset */ | |
935 | ||
936 | /* Like R_NDS32_20, but used when setting global offset table | |
937 | entries. */ | |
938 | HOWTO (R_NDS32_GLOB_DAT, /* type */ | |
939 | 0, /* rightshift */ | |
940 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
941 | 32, /* bitsize */ | |
942 | FALSE, /* pc_relative */ | |
943 | 0, /* bitpos */ | |
944 | complain_overflow_bitfield, /* complain_on_overflow */ | |
945 | bfd_elf_generic_reloc, /* special_function */ | |
946 | "R_NDS32_GLOB_DAT", /* name */ | |
947 | FALSE, /* partial_inplace */ | |
948 | 0xffffffff, /* src_mask */ | |
949 | 0xffffffff, /* dst_mask */ | |
950 | FALSE), /* pcrel_offset */ | |
951 | ||
952 | /* Marks a procedure linkage table entry for a symbol. */ | |
953 | HOWTO (R_NDS32_JMP_SLOT, /* type */ | |
954 | 0, /* rightshift */ | |
955 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
956 | 32, /* bitsize */ | |
957 | FALSE, /* pc_relative */ | |
958 | 0, /* bitpos */ | |
959 | complain_overflow_bitfield, /* complain_on_overflow */ | |
960 | bfd_elf_generic_reloc, /* special_function */ | |
961 | "R_NDS32_JMP_SLOT", /* name */ | |
962 | FALSE, /* partial_inplace */ | |
963 | 0xffffffff, /* src_mask */ | |
964 | 0xffffffff, /* dst_mask */ | |
965 | FALSE), /* pcrel_offset */ | |
966 | ||
967 | /* Used only by the dynamic linker. When the object is run, this | |
968 | longword is set to the load address of the object, plus the | |
969 | addend. */ | |
970 | HOWTO (R_NDS32_RELATIVE, /* type */ | |
971 | 0, /* rightshift */ | |
972 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
973 | 32, /* bitsize */ | |
974 | FALSE, /* pc_relative */ | |
975 | 0, /* bitpos */ | |
976 | complain_overflow_bitfield, /* complain_on_overflow */ | |
977 | bfd_elf_generic_reloc, /* special_function */ | |
978 | "R_NDS32_RELATIVE", /* name */ | |
979 | FALSE, /* partial_inplace */ | |
980 | 0xffffffff, /* src_mask */ | |
981 | 0xffffffff, /* dst_mask */ | |
982 | FALSE), /* pcrel_offset */ | |
983 | ||
984 | HOWTO (R_NDS32_GOTOFF, /* type */ | |
985 | 0, /* rightshift */ | |
986 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
987 | 20, /* bitsize */ | |
988 | FALSE, /* pc_relative */ | |
989 | 0, /* bitpos */ | |
990 | complain_overflow_signed, /* complain_on_overflow */ | |
991 | bfd_elf_generic_reloc, /* special_function */ | |
992 | "R_NDS32_GOTOFF", /* name */ | |
993 | FALSE, /* partial_inplace */ | |
994 | 0xfffff, /* src_mask */ | |
995 | 0xfffff, /* dst_mask */ | |
996 | FALSE), /* pcrel_offset */ | |
997 | ||
998 | /* An PC Relative 20-bit relocation used when setting PIC offset | |
999 | table register. */ | |
1000 | HOWTO (R_NDS32_GOTPC20, /* type */ | |
1001 | 0, /* rightshift */ | |
1002 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1003 | 20, /* bitsize */ | |
1004 | TRUE, /* pc_relative */ | |
1005 | 0, /* bitpos */ | |
1006 | complain_overflow_signed, /* complain_on_overflow */ | |
1007 | bfd_elf_generic_reloc, /* special_function */ | |
1008 | "R_NDS32_GOTPC20", /* name */ | |
1009 | FALSE, /* partial_inplace */ | |
1010 | 0xfffff, /* src_mask */ | |
1011 | 0xfffff, /* dst_mask */ | |
1012 | TRUE), /* pcrel_offset */ | |
1013 | ||
1014 | /* Like R_NDS32_HI20, but referring to the GOT table entry for | |
1015 | the symbol. */ | |
1016 | HOWTO (R_NDS32_GOT_HI20, /* type */ | |
1017 | 12, /* rightshift */ | |
1018 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1019 | 20, /* bitsize */ | |
1020 | FALSE, /* pc_relative */ | |
1021 | 0, /* bitpos */ | |
1022 | complain_overflow_dont,/* complain_on_overflow */ | |
1023 | bfd_elf_generic_reloc, /* special_function */ | |
1024 | "R_NDS32_GOT_HI20", /* name */ | |
1025 | FALSE, /* partial_inplace */ | |
1026 | 0x000fffff, /* src_mask */ | |
1027 | 0x000fffff, /* dst_mask */ | |
1028 | FALSE), /* pcrel_offset */ | |
1029 | HOWTO (R_NDS32_GOT_LO12, /* type */ | |
1030 | 0, /* rightshift */ | |
1031 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1032 | 12, /* bitsize */ | |
1033 | FALSE, /* pc_relative */ | |
1034 | 0, /* bitpos */ | |
1035 | complain_overflow_dont,/* complain_on_overflow */ | |
1036 | bfd_elf_generic_reloc, /* special_function */ | |
1037 | "R_NDS32_GOT_LO12", /* name */ | |
1038 | FALSE, /* partial_inplace */ | |
1039 | 0x00000fff, /* src_mask */ | |
1040 | 0x00000fff, /* dst_mask */ | |
1041 | FALSE), /* pcrel_offset */ | |
1042 | ||
1043 | /* An PC Relative relocation used when setting PIC offset table register. | |
1044 | Like R_NDS32_HI20, but referring to the GOT table entry for | |
1045 | the symbol. */ | |
1046 | HOWTO (R_NDS32_GOTPC_HI20, /* type */ | |
1047 | 12, /* rightshift */ | |
1048 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1049 | 20, /* bitsize */ | |
1050 | FALSE, /* pc_relative */ | |
1051 | 0, /* bitpos */ | |
1052 | complain_overflow_dont,/* complain_on_overflow */ | |
1053 | bfd_elf_generic_reloc, /* special_function */ | |
1054 | "R_NDS32_GOTPC_HI20", /* name */ | |
1055 | FALSE, /* partial_inplace */ | |
1056 | 0x000fffff, /* src_mask */ | |
1057 | 0x000fffff, /* dst_mask */ | |
1058 | TRUE), /* pcrel_offset */ | |
1059 | HOWTO (R_NDS32_GOTPC_LO12, /* type */ | |
1060 | 0, /* rightshift */ | |
1061 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1062 | 12, /* bitsize */ | |
1063 | FALSE, /* pc_relative */ | |
1064 | 0, /* bitpos */ | |
1065 | complain_overflow_dont, /* complain_on_overflow */ | |
1066 | bfd_elf_generic_reloc, /* special_function */ | |
1067 | "R_NDS32_GOTPC_LO12", /* name */ | |
1068 | FALSE, /* partial_inplace */ | |
1069 | 0x00000fff, /* src_mask */ | |
1070 | 0x00000fff, /* dst_mask */ | |
1071 | TRUE), /* pcrel_offset */ | |
1072 | ||
1073 | HOWTO (R_NDS32_GOTOFF_HI20, /* type */ | |
1074 | 12, /* rightshift */ | |
1075 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1076 | 20, /* bitsize */ | |
1077 | FALSE, /* pc_relative */ | |
1078 | 0, /* bitpos */ | |
1079 | complain_overflow_dont,/* complain_on_overflow */ | |
1080 | bfd_elf_generic_reloc, /* special_function */ | |
1081 | "R_NDS32_GOTOFF_HI20", /* name */ | |
1082 | FALSE, /* partial_inplace */ | |
1083 | 0x000fffff, /* src_mask */ | |
1084 | 0x000fffff, /* dst_mask */ | |
1085 | FALSE), /* pcrel_offset */ | |
1086 | HOWTO (R_NDS32_GOTOFF_LO12, /* type */ | |
1087 | 0, /* rightshift */ | |
1088 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1089 | 12, /* bitsize */ | |
1090 | FALSE, /* pc_relative */ | |
1091 | 0, /* bitpos */ | |
1092 | complain_overflow_dont,/* complain_on_overflow */ | |
1093 | bfd_elf_generic_reloc, /* special_function */ | |
1094 | "R_NDS32_GOTOFF_LO12", /* name */ | |
1095 | FALSE, /* partial_inplace */ | |
1096 | 0x00000fff, /* src_mask */ | |
1097 | 0x00000fff, /* dst_mask */ | |
1098 | FALSE), /* pcrel_offset */ | |
1099 | ||
1100 | /* Alignment hint for relaxable instruction. This is used with | |
1101 | R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2 | |
1102 | in order to make next label aligned on word boundary. */ | |
1103 | HOWTO (R_NDS32_INSN16, /* type */ | |
1104 | 0, /* rightshift */ | |
1105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1106 | 32, /* bitsize */ | |
1107 | FALSE, /* pc_relative */ | |
1108 | 0, /* bitpos */ | |
1109 | complain_overflow_dont,/* complain_on_overflow */ | |
1110 | nds32_elf_ignore_reloc,/* special_function */ | |
1111 | "R_NDS32_INSN16", /* name */ | |
1112 | FALSE, /* partial_inplace */ | |
1113 | 0x00000fff, /* src_mask */ | |
1114 | 0x00000fff, /* dst_mask */ | |
1115 | FALSE), /* pcrel_offset */ | |
1116 | ||
1117 | /* Alignment hint for label. */ | |
1118 | HOWTO (R_NDS32_LABEL, /* type */ | |
1119 | 0, /* rightshift */ | |
1120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1121 | 32, /* bitsize */ | |
1122 | FALSE, /* pc_relative */ | |
1123 | 0, /* bitpos */ | |
1124 | complain_overflow_dont,/* complain_on_overflow */ | |
1125 | nds32_elf_ignore_reloc,/* special_function */ | |
1126 | "R_NDS32_LABEL", /* name */ | |
1127 | FALSE, /* partial_inplace */ | |
1128 | 0xffffffff, /* src_mask */ | |
1129 | 0xffffffff, /* dst_mask */ | |
1130 | FALSE), /* pcrel_offset */ | |
1131 | ||
1132 | /* Relax hint for unconditional call sequence */ | |
1133 | HOWTO (R_NDS32_LONGCALL1, /* type */ | |
1134 | 0, /* rightshift */ | |
1135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1136 | 32, /* bitsize */ | |
1137 | FALSE, /* pc_relative */ | |
1138 | 0, /* bitpos */ | |
1139 | complain_overflow_dont,/* complain_on_overflow */ | |
1140 | nds32_elf_ignore_reloc,/* special_function */ | |
1141 | "R_NDS32_LONGCALL1", /* name */ | |
1142 | FALSE, /* partial_inplace */ | |
1143 | 0xffffffff, /* src_mask */ | |
1144 | 0xffffffff, /* dst_mask */ | |
1145 | FALSE), /* pcrel_offset */ | |
1146 | ||
1147 | /* Relax hint for conditional call sequence. */ | |
1148 | HOWTO (R_NDS32_LONGCALL2, /* type */ | |
1149 | 0, /* rightshift */ | |
1150 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1151 | 32, /* bitsize */ | |
1152 | FALSE, /* pc_relative */ | |
1153 | 0, /* bitpos */ | |
1154 | complain_overflow_dont,/* complain_on_overflow */ | |
1155 | nds32_elf_ignore_reloc,/* special_function */ | |
1156 | "R_NDS32_LONGCALL2", /* name */ | |
1157 | FALSE, /* partial_inplace */ | |
1158 | 0xffffffff, /* src_mask */ | |
1159 | 0xffffffff, /* dst_mask */ | |
1160 | FALSE), /* pcrel_offset */ | |
1161 | ||
1162 | /* Relax hint for conditional call sequence. */ | |
1163 | HOWTO (R_NDS32_LONGCALL3, /* type */ | |
1164 | 0, /* rightshift */ | |
1165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1166 | 32, /* bitsize */ | |
1167 | FALSE, /* pc_relative */ | |
1168 | 0, /* bitpos */ | |
1169 | complain_overflow_dont,/* complain_on_overflow */ | |
1170 | nds32_elf_ignore_reloc,/* special_function */ | |
1171 | "R_NDS32_LONGCALL3", /* name */ | |
1172 | FALSE, /* partial_inplace */ | |
1173 | 0xffffffff, /* src_mask */ | |
1174 | 0xffffffff, /* dst_mask */ | |
1175 | FALSE), /* pcrel_offset */ | |
1176 | ||
1177 | /* Relax hint for unconditional branch sequence. */ | |
1178 | HOWTO (R_NDS32_LONGJUMP1, /* type */ | |
1179 | 0, /* rightshift */ | |
1180 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1181 | 32, /* bitsize */ | |
1182 | FALSE, /* pc_relative */ | |
1183 | 0, /* bitpos */ | |
1184 | complain_overflow_dont,/* complain_on_overflow */ | |
1185 | nds32_elf_ignore_reloc,/* special_function */ | |
1186 | "R_NDS32_LONGJUMP1", /* name */ | |
1187 | FALSE, /* partial_inplace */ | |
1188 | 0xffffffff, /* src_mask */ | |
1189 | 0xffffffff, /* dst_mask */ | |
1190 | FALSE), /* pcrel_offset */ | |
1191 | ||
1192 | /* Relax hint for conditional branch sequence. */ | |
1193 | HOWTO (R_NDS32_LONGJUMP2, /* type */ | |
1194 | 0, /* rightshift */ | |
1195 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1196 | 32, /* bitsize */ | |
1197 | FALSE, /* pc_relative */ | |
1198 | 0, /* bitpos */ | |
1199 | complain_overflow_dont,/* complain_on_overflow */ | |
1200 | nds32_elf_ignore_reloc,/* special_function */ | |
1201 | "R_NDS32_LONGJUMP2", /* name */ | |
1202 | FALSE, /* partial_inplace */ | |
1203 | 0xffffffff, /* src_mask */ | |
1204 | 0xffffffff, /* dst_mask */ | |
1205 | FALSE), /* pcrel_offset */ | |
1206 | ||
1207 | /* Relax hint for conditional branch sequence. */ | |
1208 | HOWTO (R_NDS32_LONGJUMP3, /* type */ | |
1209 | 0, /* rightshift */ | |
1210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1211 | 32, /* bitsize */ | |
1212 | FALSE, /* pc_relative */ | |
1213 | 0, /* bitpos */ | |
1214 | complain_overflow_dont,/* complain_on_overflow */ | |
1215 | nds32_elf_ignore_reloc,/* special_function */ | |
1216 | "R_NDS32_LONGJUMP3", /* name */ | |
1217 | FALSE, /* partial_inplace */ | |
1218 | 0xffffffff, /* src_mask */ | |
1219 | 0xffffffff, /* dst_mask */ | |
1220 | FALSE), /* pcrel_offset */ | |
1221 | ||
1222 | /* Relax hint for load/store sequence. */ | |
1223 | HOWTO (R_NDS32_LOADSTORE, /* type */ | |
1224 | 0, /* rightshift */ | |
1225 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1226 | 32, /* bitsize */ | |
1227 | FALSE, /* pc_relative */ | |
1228 | 0, /* bitpos */ | |
1229 | complain_overflow_dont,/* complain_on_overflow */ | |
1230 | nds32_elf_ignore_reloc,/* special_function */ | |
1231 | "R_NDS32_LOADSTORE", /* name */ | |
1232 | FALSE, /* partial_inplace */ | |
1233 | 0xffffffff, /* src_mask */ | |
1234 | 0xffffffff, /* dst_mask */ | |
1235 | FALSE), /* pcrel_offset */ | |
1236 | ||
1237 | /* Relax hint for load/store sequence. */ | |
1238 | HOWTO (R_NDS32_9_FIXED_RELA, /* type */ | |
1239 | 0, /* rightshift */ | |
1240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1241 | 16, /* bitsize */ | |
1242 | FALSE, /* pc_relative */ | |
1243 | 0, /* bitpos */ | |
1244 | complain_overflow_dont,/* complain_on_overflow */ | |
1245 | nds32_elf_ignore_reloc,/* special_function */ | |
1246 | "R_NDS32_9_FIXED_RELA",/* name */ | |
1247 | FALSE, /* partial_inplace */ | |
1248 | 0x000000ff, /* src_mask */ | |
1249 | 0x000000ff, /* dst_mask */ | |
1250 | FALSE), /* pcrel_offset */ | |
1251 | ||
1252 | /* Relax hint for load/store sequence. */ | |
1253 | HOWTO (R_NDS32_15_FIXED_RELA, /* type */ | |
1254 | 0, /* rightshift */ | |
1255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1256 | 32, /* bitsize */ | |
1257 | FALSE, /* pc_relative */ | |
1258 | 0, /* bitpos */ | |
1259 | complain_overflow_dont,/* complain_on_overflow */ | |
1260 | nds32_elf_ignore_reloc,/* special_function */ | |
1261 | "R_NDS32_15_FIXED_RELA", /* name */ | |
1262 | FALSE, /* partial_inplace */ | |
1263 | 0x00003fff, /* src_mask */ | |
1264 | 0x00003fff, /* dst_mask */ | |
1265 | FALSE), /* pcrel_offset */ | |
1266 | ||
1267 | /* Relax hint for load/store sequence. */ | |
1268 | HOWTO (R_NDS32_17_FIXED_RELA, /* type */ | |
1269 | 0, /* rightshift */ | |
1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1271 | 32, /* bitsize */ | |
1272 | FALSE, /* pc_relative */ | |
1273 | 0, /* bitpos */ | |
1274 | complain_overflow_dont,/* complain_on_overflow */ | |
1275 | nds32_elf_ignore_reloc,/* special_function */ | |
1276 | "R_NDS32_17_FIXED_RELA", /* name */ | |
1277 | FALSE, /* partial_inplace */ | |
1278 | 0x0000ffff, /* src_mask */ | |
1279 | 0x0000ffff, /* dst_mask */ | |
1280 | FALSE), /* pcrel_offset */ | |
1281 | ||
1282 | /* Relax hint for load/store sequence. */ | |
1283 | HOWTO (R_NDS32_25_FIXED_RELA, /* type */ | |
1284 | 0, /* rightshift */ | |
1285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1286 | 32, /* bitsize */ | |
1287 | FALSE, /* pc_relative */ | |
1288 | 0, /* bitpos */ | |
1289 | complain_overflow_dont,/* complain_on_overflow */ | |
1290 | nds32_elf_ignore_reloc,/* special_function */ | |
1291 | "R_NDS32_25_FIXED_RELA", /* name */ | |
1292 | FALSE, /* partial_inplace */ | |
1293 | 0x00ffffff, /* src_mask */ | |
1294 | 0x00ffffff, /* dst_mask */ | |
1295 | FALSE), /* pcrel_offset */ | |
1296 | ||
1297 | /* High 20 bits of PLT symbol offset relative to PC. */ | |
1298 | HOWTO (R_NDS32_PLTREL_HI20, /* type */ | |
1299 | 12, /* rightshift */ | |
1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1301 | 20, /* bitsize */ | |
1302 | FALSE, /* pc_relative */ | |
1303 | 0, /* bitpos */ | |
1304 | complain_overflow_dont,/* complain_on_overflow */ | |
1305 | bfd_elf_generic_reloc, /* special_function */ | |
1306 | "R_NDS32_PLTREL_HI20", /* name */ | |
1307 | FALSE, /* partial_inplace */ | |
1308 | 0x000fffff, /* src_mask */ | |
1309 | 0x000fffff, /* dst_mask */ | |
1310 | FALSE), /* pcrel_offset */ | |
1311 | ||
1312 | /* Low 12 bits of PLT symbol offset relative to PC. */ | |
1313 | HOWTO (R_NDS32_PLTREL_LO12, /* type */ | |
1314 | 0, /* rightshift */ | |
1315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1316 | 12, /* bitsize */ | |
1317 | FALSE, /* pc_relative */ | |
1318 | 0, /* bitpos */ | |
1319 | complain_overflow_dont,/* complain_on_overflow */ | |
1320 | bfd_elf_generic_reloc, /* special_function */ | |
1321 | "R_NDS32_PLTREL_LO12", /* name */ | |
1322 | FALSE, /* partial_inplace */ | |
1323 | 0x00000fff, /* src_mask */ | |
1324 | 0x00000fff, /* dst_mask */ | |
1325 | FALSE), /* pcrel_offset */ | |
1326 | ||
1327 | /* High 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1328 | HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */ | |
1329 | 12, /* rightshift */ | |
1330 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1331 | 20, /* bitsize */ | |
1332 | FALSE, /* pc_relative */ | |
1333 | 0, /* bitpos */ | |
1334 | complain_overflow_dont,/* complain_on_overflow */ | |
1335 | bfd_elf_generic_reloc, /* special_function */ | |
1336 | "R_NDS32_PLT_GOTREL_HI20", /* name */ | |
1337 | FALSE, /* partial_inplace */ | |
1338 | 0x000fffff, /* src_mask */ | |
1339 | 0x000fffff, /* dst_mask */ | |
1340 | FALSE), /* pcrel_offset */ | |
1341 | ||
1342 | /* Low 12 bits of PLT symbol offset relative to GOT (GP). */ | |
1343 | HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */ | |
1344 | 0, /* rightshift */ | |
1345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1346 | 12, /* bitsize */ | |
1347 | FALSE, /* pc_relative */ | |
1348 | 0, /* bitpos */ | |
1349 | complain_overflow_dont,/* complain_on_overflow */ | |
1350 | bfd_elf_generic_reloc, /* special_function */ | |
1351 | "R_NDS32_PLT_GOTREL_LO12", /* name */ | |
1352 | FALSE, /* partial_inplace */ | |
1353 | 0x00000fff, /* src_mask */ | |
1354 | 0x00000fff, /* dst_mask */ | |
1355 | FALSE), /* pcrel_offset */ | |
1356 | ||
1357 | /* Small data area 12 bits offset. */ | |
1358 | HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */ | |
1359 | 2, /* rightshift */ | |
1360 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1361 | 12, /* bitsize */ | |
1362 | FALSE, /* pc_relative */ | |
1363 | 0, /* bitpos */ | |
1364 | complain_overflow_signed, /* complain_on_overflow */ | |
1365 | bfd_elf_generic_reloc, /* special_function */ | |
1366 | "R_NDS32_SDA12S2_DP_RELA", /* name */ | |
1367 | FALSE, /* partial_inplace */ | |
1368 | 0x00000fff, /* src_mask */ | |
1369 | 0x00000fff, /* dst_mask */ | |
1370 | FALSE), /* pcrel_offset */ | |
1371 | ||
1372 | /* Small data area 12 bits offset. */ | |
1373 | HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */ | |
1374 | 2, /* rightshift */ | |
1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1376 | 12, /* bitsize */ | |
1377 | FALSE, /* pc_relative */ | |
1378 | 0, /* bitpos */ | |
1379 | complain_overflow_signed, /* complain_on_overflow */ | |
1380 | bfd_elf_generic_reloc, /* special_function */ | |
1381 | "R_NDS32_SDA12S2_SP_RELA", /* name */ | |
1382 | FALSE, /* partial_inplace */ | |
1383 | 0x00000fff, /* src_mask */ | |
1384 | 0x00000fff, /* dst_mask */ | |
1385 | FALSE), /* pcrel_offset */ | |
1386 | /* Lower 12 bits of address. */ | |
1387 | ||
1388 | HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */ | |
1389 | 2, /* rightshift */ | |
1390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1391 | 10, /* bitsize */ | |
1392 | FALSE, /* pc_relative */ | |
1393 | 0, /* bitpos */ | |
1394 | complain_overflow_dont,/* complain_on_overflow */ | |
1395 | bfd_elf_generic_reloc, /* special_function */ | |
1396 | "R_NDS32_LO12S2_DP_RELA", /* name */ | |
1397 | FALSE, /* partial_inplace */ | |
1398 | 0x000003ff, /* src_mask */ | |
1399 | 0x000003ff, /* dst_mask */ | |
1400 | FALSE), /* pcrel_offset */ | |
1401 | ||
1402 | /* Lower 12 bits of address. */ | |
1403 | HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */ | |
1404 | 2, /* rightshift */ | |
1405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1406 | 10, /* bitsize */ | |
1407 | FALSE, /* pc_relative */ | |
1408 | 0, /* bitpos */ | |
1409 | complain_overflow_dont,/* complain_on_overflow */ | |
1410 | bfd_elf_generic_reloc, /* special_function */ | |
1411 | "R_NDS32_LO12S2_SP_RELA", /* name */ | |
1412 | FALSE, /* partial_inplace */ | |
1413 | 0x000003ff, /* src_mask */ | |
1414 | 0x000003ff, /* dst_mask */ | |
1415 | FALSE), /* pcrel_offset */ | |
1416 | /* Lower 12 bits of address. Special identity for or case. */ | |
1417 | HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */ | |
1418 | 0, /* rightshift */ | |
1419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1420 | 12, /* bitsize */ | |
1421 | FALSE, /* pc_relative */ | |
1422 | 0, /* bitpos */ | |
1423 | complain_overflow_dont,/* complain_on_overflow */ | |
1424 | bfd_elf_generic_reloc, /* special_function */ | |
1425 | "R_NDS32_LO12S0_ORI_RELA", /* name */ | |
1426 | FALSE, /* partial_inplace */ | |
1427 | 0x00000fff, /* src_mask */ | |
1428 | 0x00000fff, /* dst_mask */ | |
1429 | FALSE), /* pcrel_offset */ | |
1430 | /* Small data area 19 bits offset. */ | |
1431 | HOWTO (R_NDS32_SDA16S3_RELA, /* type */ | |
1432 | 3, /* rightshift */ | |
1433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1434 | 16, /* bitsize */ | |
1435 | FALSE, /* pc_relative */ | |
1436 | 0, /* bitpos */ | |
1437 | complain_overflow_signed, /* complain_on_overflow */ | |
1438 | bfd_elf_generic_reloc, /* special_function */ | |
1439 | "R_NDS32_SDA16S3_RELA",/* name */ | |
1440 | FALSE, /* partial_inplace */ | |
1441 | 0x0000ffff, /* src_mask */ | |
1442 | 0x0000ffff, /* dst_mask */ | |
1443 | FALSE), /* pcrel_offset */ | |
1444 | ||
1445 | /* Small data area 15 bits offset. */ | |
1446 | HOWTO (R_NDS32_SDA17S2_RELA, /* type */ | |
1447 | 2, /* rightshift */ | |
1448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1449 | 17, /* bitsize */ | |
1450 | FALSE, /* pc_relative */ | |
1451 | 0, /* bitpos */ | |
1452 | complain_overflow_signed, /* complain_on_overflow */ | |
1453 | bfd_elf_generic_reloc, /* special_function */ | |
1454 | "R_NDS32_SDA17S2_RELA",/* name */ | |
1455 | FALSE, /* partial_inplace */ | |
1456 | 0x0001ffff, /* src_mask */ | |
1457 | 0x0001ffff, /* dst_mask */ | |
1458 | FALSE), /* pcrel_offset */ | |
1459 | ||
1460 | HOWTO (R_NDS32_SDA18S1_RELA, /* type */ | |
1461 | 1, /* rightshift */ | |
1462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1463 | 18, /* bitsize */ | |
1464 | FALSE, /* pc_relative */ | |
1465 | 0, /* bitpos */ | |
1466 | complain_overflow_signed, /* complain_on_overflow */ | |
1467 | bfd_elf_generic_reloc, /* special_function */ | |
1468 | "R_NDS32_SDA18S1_RELA",/* name */ | |
1469 | FALSE, /* partial_inplace */ | |
1470 | 0x0003ffff, /* src_mask */ | |
1471 | 0x0003ffff, /* dst_mask */ | |
1472 | FALSE), /* pcrel_offset */ | |
1473 | ||
1474 | HOWTO (R_NDS32_SDA19S0_RELA, /* type */ | |
1475 | 0, /* rightshift */ | |
1476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1477 | 19, /* bitsize */ | |
1478 | FALSE, /* pc_relative */ | |
1479 | 0, /* bitpos */ | |
1480 | complain_overflow_signed, /* complain_on_overflow */ | |
1481 | bfd_elf_generic_reloc, /* special_function */ | |
1482 | "R_NDS32_SDA19S0_RELA",/* name */ | |
1483 | FALSE, /* partial_inplace */ | |
1484 | 0x0007ffff, /* src_mask */ | |
1485 | 0x0007ffff, /* dst_mask */ | |
1486 | FALSE), /* pcrel_offset */ | |
1487 | HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */ | |
1488 | 0, /* rightshift */ | |
1489 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1490 | 8, /* bitsize */ | |
1491 | FALSE, /* pc_relative */ | |
1492 | 0, /* bitpos */ | |
1493 | complain_overflow_dont,/* complain_on_overflow */ | |
1494 | nds32_elf_ignore_reloc,/* special_function */ | |
1495 | "R_NDS32_DWARF2_OP1_RELA", /* name */ | |
1496 | FALSE, /* partial_inplace */ | |
1497 | 0xff, /* src_mask */ | |
1498 | 0xff, /* dst_mask */ | |
1499 | FALSE), /* pcrel_offset */ | |
1500 | HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */ | |
1501 | 0, /* rightshift */ | |
1502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1503 | 16, /* bitsize */ | |
1504 | FALSE, /* pc_relative */ | |
1505 | 0, /* bitpos */ | |
1506 | complain_overflow_dont,/* complain_on_overflow */ | |
1507 | nds32_elf_ignore_reloc,/* special_function */ | |
1508 | "R_NDS32_DWARF2_OP2_RELA", /* name */ | |
1509 | FALSE, /* partial_inplace */ | |
1510 | 0xffff, /* src_mask */ | |
1511 | 0xffff, /* dst_mask */ | |
1512 | FALSE), /* pcrel_offset */ | |
1513 | HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */ | |
1514 | 0, /* rightshift */ | |
1515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1516 | 32, /* bitsize */ | |
1517 | FALSE, /* pc_relative */ | |
1518 | 0, /* bitpos */ | |
1519 | complain_overflow_dont,/* complain_on_overflow */ | |
1520 | nds32_elf_ignore_reloc,/* special_function */ | |
1521 | "R_NDS32_DWARF2_LEB_RELA", /* name */ | |
1522 | FALSE, /* partial_inplace */ | |
1523 | 0xffffffff, /* src_mask */ | |
1524 | 0xffffffff, /* dst_mask */ | |
1525 | FALSE), /* pcrel_offset */ | |
1526 | HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */ | |
1527 | 0, /* rightshift */ | |
1528 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1529 | 16, /* bitsize */ | |
1530 | FALSE, /* pc_relative */ | |
1531 | 0, /* bitpos */ | |
1532 | complain_overflow_dont,/* complain_on_overflow */ | |
1533 | nds32_elf_ignore_reloc,/* special_function */ | |
1534 | "R_NDS32_UPDATE_TA_RELA", /* name */ | |
1535 | FALSE, /* partial_inplace */ | |
1536 | 0xffff, /* src_mask */ | |
1537 | 0xffff, /* dst_mask */ | |
1538 | FALSE), /* pcrel_offset */ | |
1539 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
1540 | entry for the symbol. */ | |
1541 | HOWTO (R_NDS32_9_PLTREL, /* type */ | |
1542 | 1, /* rightshift */ | |
1543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1544 | 8, /* bitsize */ | |
1545 | TRUE, /* pc_relative */ | |
1546 | 0, /* bitpos */ | |
1547 | complain_overflow_signed, /* complain_on_overflow */ | |
1548 | bfd_elf_generic_reloc, /* special_function */ | |
1549 | "R_NDS32_9_PLTREL", /* name */ | |
1550 | FALSE, /* partial_inplace */ | |
1551 | 0xff, /* src_mask */ | |
1552 | 0xff, /* dst_mask */ | |
1553 | TRUE), /* pcrel_offset */ | |
1554 | /* Low 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1555 | HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */ | |
1556 | 0, /* rightshift */ | |
1557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1558 | 20, /* bitsize */ | |
1559 | FALSE, /* pc_relative */ | |
1560 | 0, /* bitpos */ | |
1561 | complain_overflow_dont,/* complain_on_overflow */ | |
1562 | bfd_elf_generic_reloc, /* special_function */ | |
1563 | "R_NDS32_PLT_GOTREL_LO20", /* name */ | |
1564 | FALSE, /* partial_inplace */ | |
1565 | 0x000fffff, /* src_mask */ | |
1566 | 0x000fffff, /* dst_mask */ | |
1567 | FALSE), /* pcrel_offset */ | |
1568 | /* low 15 bits of PLT symbol offset relative to GOT (GP) */ | |
1569 | HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */ | |
1570 | 0, /* rightshift */ | |
1571 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1572 | 15, /* bitsize */ | |
1573 | FALSE, /* pc_relative */ | |
1574 | 0, /* bitpos */ | |
1575 | complain_overflow_dont,/* complain_on_overflow */ | |
1576 | bfd_elf_generic_reloc, /* special_function */ | |
1577 | "R_NDS32_PLT_GOTREL_LO15", /* name */ | |
1578 | FALSE, /* partial_inplace */ | |
1579 | 0x00007fff, /* src_mask */ | |
1580 | 0x00007fff, /* dst_mask */ | |
1581 | FALSE), /* pcrel_offset */ | |
1582 | /* Low 19 bits of PLT symbol offset relative to GOT (GP). */ | |
1583 | HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */ | |
1584 | 0, /* rightshift */ | |
1585 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1586 | 19, /* bitsize */ | |
1587 | FALSE, /* pc_relative */ | |
1588 | 0, /* bitpos */ | |
1589 | complain_overflow_dont,/* complain_on_overflow */ | |
1590 | bfd_elf_generic_reloc, /* special_function */ | |
1591 | "R_NDS32_PLT_GOTREL_LO19", /* name */ | |
1592 | FALSE, /* partial_inplace */ | |
1593 | 0x0007ffff, /* src_mask */ | |
1594 | 0x0007ffff, /* dst_mask */ | |
1595 | FALSE), /* pcrel_offset */ | |
1596 | HOWTO (R_NDS32_GOT_LO15, /* type */ | |
1597 | 0, /* rightshift */ | |
1598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1599 | 15, /* bitsize */ | |
1600 | FALSE, /* pc_relative */ | |
1601 | 0, /* bitpos */ | |
1602 | complain_overflow_dont,/* complain_on_overflow */ | |
1603 | bfd_elf_generic_reloc, /* special_function */ | |
1604 | "R_NDS32_GOT_LO15", /* name */ | |
1605 | FALSE, /* partial_inplace */ | |
1606 | 0x00007fff, /* src_mask */ | |
1607 | 0x00007fff, /* dst_mask */ | |
1608 | FALSE), /* pcrel_offset */ | |
1609 | HOWTO (R_NDS32_GOT_LO19, /* type */ | |
1610 | 0, /* rightshift */ | |
1611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1612 | 19, /* bitsize */ | |
1613 | FALSE, /* pc_relative */ | |
1614 | 0, /* bitpos */ | |
1615 | complain_overflow_dont,/* complain_on_overflow */ | |
1616 | bfd_elf_generic_reloc, /* special_function */ | |
1617 | "R_NDS32_GOT_LO19", /* name */ | |
1618 | FALSE, /* partial_inplace */ | |
1619 | 0x0007ffff, /* src_mask */ | |
1620 | 0x0007ffff, /* dst_mask */ | |
1621 | FALSE), /* pcrel_offset */ | |
1622 | HOWTO (R_NDS32_GOTOFF_LO15, /* type */ | |
1623 | 0, /* rightshift */ | |
1624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1625 | 15, /* bitsize */ | |
1626 | FALSE, /* pc_relative */ | |
1627 | 0, /* bitpos */ | |
1628 | complain_overflow_dont,/* complain_on_overflow */ | |
1629 | bfd_elf_generic_reloc, /* special_function */ | |
1630 | "R_NDS32_GOTOFF_LO15", /* name */ | |
1631 | FALSE, /* partial_inplace */ | |
1632 | 0x00007fff, /* src_mask */ | |
1633 | 0x00007fff, /* dst_mask */ | |
1634 | FALSE), /* pcrel_offset */ | |
1635 | HOWTO (R_NDS32_GOTOFF_LO19, /* type */ | |
1636 | 0, /* rightshift */ | |
1637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1638 | 19, /* bitsize */ | |
1639 | FALSE, /* pc_relative */ | |
1640 | 0, /* bitpos */ | |
1641 | complain_overflow_dont,/* complain_on_overflow */ | |
1642 | bfd_elf_generic_reloc, /* special_function */ | |
1643 | "R_NDS32_GOTOFF_LO19", /* name */ | |
1644 | FALSE, /* partial_inplace */ | |
1645 | 0x0007ffff, /* src_mask */ | |
1646 | 0x0007ffff, /* dst_mask */ | |
1647 | FALSE), /* pcrel_offset */ | |
1648 | /* GOT 15 bits offset. */ | |
1649 | HOWTO (R_NDS32_GOT15S2_RELA, /* type */ | |
1650 | 2, /* rightshift */ | |
1651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1652 | 15, /* bitsize */ | |
1653 | FALSE, /* pc_relative */ | |
1654 | 0, /* bitpos */ | |
1655 | complain_overflow_signed, /* complain_on_overflow */ | |
1656 | bfd_elf_generic_reloc, /* special_function */ | |
1657 | "R_NDS32_GOT15S2_RELA",/* name */ | |
1658 | FALSE, /* partial_inplace */ | |
1659 | 0x00007fff, /* src_mask */ | |
1660 | 0x00007fff, /* dst_mask */ | |
1661 | FALSE), /* pcrel_offset */ | |
1662 | /* GOT 17 bits offset. */ | |
1663 | HOWTO (R_NDS32_GOT17S2_RELA, /* type */ | |
1664 | 2, /* rightshift */ | |
1665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1666 | 17, /* bitsize */ | |
1667 | FALSE, /* pc_relative */ | |
1668 | 0, /* bitpos */ | |
1669 | complain_overflow_signed, /* complain_on_overflow */ | |
1670 | bfd_elf_generic_reloc, /* special_function */ | |
1671 | "R_NDS32_GOT17S2_RELA",/* name */ | |
1672 | FALSE, /* partial_inplace */ | |
1673 | 0x0001ffff, /* src_mask */ | |
1674 | 0x0001ffff, /* dst_mask */ | |
1675 | FALSE), /* pcrel_offset */ | |
1676 | /* A 5 bit address. */ | |
1677 | HOWTO (R_NDS32_5_RELA, /* type */ | |
1678 | 0, /* rightshift */ | |
1679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1680 | 5, /* bitsize */ | |
1681 | FALSE, /* pc_relative */ | |
1682 | 0, /* bitpos */ | |
1683 | complain_overflow_signed, /* complain_on_overflow */ | |
1684 | bfd_elf_generic_reloc, /* special_function */ | |
1685 | "R_NDS32_5_RELA", /* name */ | |
1686 | FALSE, /* partial_inplace */ | |
1687 | 0x1f, /* src_mask */ | |
1688 | 0x1f, /* dst_mask */ | |
1689 | FALSE), /* pcrel_offset */ | |
1690 | HOWTO (R_NDS32_10_UPCREL_RELA,/* type */ | |
1691 | 1, /* rightshift */ | |
1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1693 | 9, /* bitsize */ | |
1694 | TRUE, /* pc_relative */ | |
1695 | 0, /* bitpos */ | |
1696 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1697 | bfd_elf_generic_reloc, /* special_function */ | |
1698 | "R_NDS32_10_UPCREL_RELA", /* name */ | |
1699 | FALSE, /* partial_inplace */ | |
1700 | 0x1ff, /* src_mask */ | |
1701 | 0x1ff, /* dst_mask */ | |
1702 | TRUE), /* pcrel_offset */ | |
1703 | HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */ | |
1704 | 2, /* rightshift */ | |
1705 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1706 | 7, /* bitsize */ | |
1707 | FALSE, /* pc_relative */ | |
1708 | 0, /* bitpos */ | |
1709 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1710 | bfd_elf_generic_reloc, /* special_function */ | |
1711 | "R_NDS32_SDA_FP7U2_RELA", /* name */ | |
1712 | FALSE, /* partial_inplace */ | |
1713 | 0x0000007f, /* src_mask */ | |
1714 | 0x0000007f, /* dst_mask */ | |
1715 | FALSE), /* pcrel_offset */ | |
1716 | HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */ | |
1717 | 1, /* rightshift */ | |
1718 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1719 | 8, /* bitsize */ | |
1720 | TRUE, /* pc_relative */ | |
1721 | 0, /* bitpos */ | |
1722 | complain_overflow_signed, /* complain_on_overflow */ | |
1723 | bfd_elf_generic_reloc, /* special_function */ | |
1724 | "R_NDS32_WORD_9_PCREL_RELA", /* name */ | |
1725 | FALSE, /* partial_inplace */ | |
1726 | 0xff, /* src_mask */ | |
1727 | 0xff, /* dst_mask */ | |
1728 | TRUE), /* pcrel_offset */ | |
1729 | HOWTO (R_NDS32_25_ABS_RELA, /* type */ | |
1730 | 1, /* rightshift */ | |
1731 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1732 | 24, /* bitsize */ | |
1733 | FALSE, /* pc_relative */ | |
1734 | 0, /* bitpos */ | |
1735 | complain_overflow_dont,/* complain_on_overflow */ | |
1736 | bfd_elf_generic_reloc, /* special_function */ | |
1737 | "R_NDS32_25_ABS_RELA", /* name */ | |
1738 | FALSE, /* partial_inplace */ | |
1739 | 0xffffff, /* src_mask */ | |
1740 | 0xffffff, /* dst_mask */ | |
1741 | FALSE), /* pcrel_offset */ | |
1742 | ||
1743 | /* A relative 17 bit relocation for ifc, right shifted by 1. */ | |
1744 | HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */ | |
1745 | 1, /* rightshift */ | |
1746 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1747 | 16, /* bitsize */ | |
1748 | TRUE, /* pc_relative */ | |
1749 | 0, /* bitpos */ | |
1750 | complain_overflow_signed, /* complain_on_overflow */ | |
1751 | bfd_elf_generic_reloc, /* special_function */ | |
1752 | "R_NDS32_17IFC_PCREL_RELA", /* name */ | |
1753 | FALSE, /* partial_inplace */ | |
1754 | 0xffff, /* src_mask */ | |
1755 | 0xffff, /* dst_mask */ | |
1756 | TRUE), /* pcrel_offset */ | |
1757 | ||
1758 | /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */ | |
1759 | HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */ | |
1760 | 1, /* rightshift */ | |
1761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1762 | 9, /* bitsize */ | |
1763 | TRUE, /* pc_relative */ | |
1764 | 0, /* bitpos */ | |
1765 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1766 | bfd_elf_generic_reloc, /* special_function */ | |
1767 | "R_NDS32_10IFCU_PCREL_RELA", /* name */ | |
1768 | FALSE, /* partial_inplace */ | |
1769 | 0x1ff, /* src_mask */ | |
1770 | 0x1ff, /* dst_mask */ | |
1771 | TRUE), /* pcrel_offset */ | |
1c8f6a4d KLC |
1772 | |
1773 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1774 | HOWTO (R_NDS32_TLS_LE_HI20, /* type */ | |
1775 | 12, /* rightshift */ | |
1776 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1777 | 20, /* bitsize */ | |
1778 | FALSE, /* pc_relative */ | |
1779 | 0, /* bitpos */ | |
1780 | complain_overflow_dont, /* complain_on_overflow */ | |
1781 | bfd_elf_generic_reloc, /* special_function */ | |
1782 | "R_NDS32_TLS_LE_HI20", /* name */ | |
1783 | FALSE, /* partial_inplace */ | |
1784 | 0x000fffff, /* src_mask */ | |
1785 | 0x000fffff, /* dst_mask */ | |
1786 | FALSE), /* pcrel_offset */ | |
1787 | HOWTO (R_NDS32_TLS_LE_LO12, /* type */ | |
1788 | 0, /* rightshift */ | |
1789 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1790 | 12, /* bitsize */ | |
1791 | FALSE, /* pc_relative */ | |
1792 | 0, /* bitpos */ | |
1793 | complain_overflow_dont, /* complain_on_overflow */ | |
1794 | bfd_elf_generic_reloc, /* special_function */ | |
1795 | "R_NDS32_TLS_LE_LO12", /* name */ | |
1796 | FALSE, /* partial_inplace */ | |
1797 | 0x00000fff, /* src_mask */ | |
1798 | 0x00000fff, /* dst_mask */ | |
1799 | FALSE), /* pcrel_offset */ | |
1800 | ||
1801 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1802 | HOWTO (R_NDS32_TLS_IE_HI20, /* type */ | |
1803 | 12, /* rightshift */ | |
1804 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1805 | 20, /* bitsize */ | |
1806 | FALSE, /* pc_relative */ | |
1807 | 0, /* bitpos */ | |
1808 | complain_overflow_dont, /* complain_on_overflow */ | |
1809 | bfd_elf_generic_reloc, /* special_function */ | |
1810 | "R_NDS32_TLS_IE_HI20", /* name */ | |
1811 | FALSE, /* partial_inplace */ | |
1812 | 0x000fffff, /* src_mask */ | |
1813 | 0x000fffff, /* dst_mask */ | |
1814 | FALSE), /* pcrel_offset */ | |
1815 | HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */ | |
1816 | 2, /* rightshift */ | |
1817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1818 | 10, /* bitsize */ | |
1819 | FALSE, /* pc_relative */ | |
1820 | 0, /* bitpos */ | |
1821 | complain_overflow_dont, /* complain_on_overflow */ | |
1822 | bfd_elf_generic_reloc, /* special_function */ | |
1823 | "R_NDS32_TLS_IE_LO12S2", /* name */ | |
1824 | FALSE, /* partial_inplace */ | |
1825 | 0x000003ff, /* src_mask */ | |
1826 | 0x000003ff, /* dst_mask */ | |
1827 | FALSE), /* pcrel_offset */ | |
1828 | /* Mark a TLS IE entry in GOT. */ | |
1829 | HOWTO (R_NDS32_TLS_TPOFF, /* type */ | |
1830 | 0, /* rightshift */ | |
1831 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1832 | 32, /* bitsize */ | |
1833 | FALSE, /* pc_relative */ | |
1834 | 0, /* bitpos */ | |
1835 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1836 | bfd_elf_generic_reloc, /* special_function */ | |
1837 | "R_NDS32_TLS_TPOFF", /* name */ | |
1838 | FALSE, /* partial_inplace */ | |
1839 | 0xffffffff, /* src_mask */ | |
1840 | 0xffffffff, /* dst_mask */ | |
1841 | FALSE), /* pcrel_offset */ | |
1842 | /* A 20 bit address. */ | |
1843 | HOWTO (R_NDS32_TLS_LE_20, /* type */ | |
1844 | 0, /* rightshift */ | |
1845 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1846 | 20, /* bitsize */ | |
1847 | FALSE, /* pc_relative */ | |
1848 | 0, /* bitpos */ | |
1849 | complain_overflow_signed, /* complain_on_overflow */ | |
1850 | bfd_elf_generic_reloc, /* special_function */ | |
1851 | "R_NDS32_TLS_LE_20", /* name */ | |
1852 | FALSE, /* partial_inplace */ | |
1853 | 0xfffff, /* src_mask */ | |
1854 | 0xfffff, /* dst_mask */ | |
1855 | FALSE), /* pcrel_offset */ | |
1856 | HOWTO (R_NDS32_TLS_LE_15S0, /* type */ | |
1857 | 0, /* rightshift */ | |
1858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1859 | 15, /* bitsize */ | |
1860 | FALSE, /* pc_relative */ | |
1861 | 0, /* bitpos */ | |
1862 | complain_overflow_signed, /* complain_on_overflow */ | |
1863 | bfd_elf_generic_reloc, /* special_function */ | |
1864 | "R_NDS32_TLS_LE_15S0", /* name */ | |
1865 | FALSE, /* partial_inplace */ | |
1866 | 0x7fff, /* src_mask */ | |
1867 | 0x7fff, /* dst_mask */ | |
1868 | FALSE), /* pcrel_offset */ | |
1869 | HOWTO (R_NDS32_TLS_LE_15S1, /* type */ | |
1870 | 1, /* rightshift */ | |
1871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1872 | 15, /* bitsize */ | |
1873 | FALSE, /* pc_relative */ | |
1874 | 0, /* bitpos */ | |
1875 | complain_overflow_signed, /* complain_on_overflow */ | |
1876 | bfd_elf_generic_reloc, /* special_function */ | |
1877 | "R_NDS32_TLS_LE_15S1", /* name */ | |
1878 | FALSE, /* partial_inplace */ | |
1879 | 0x7fff, /* src_mask */ | |
1880 | 0x7fff, /* dst_mask */ | |
1881 | FALSE), /* pcrel_offset */ | |
1882 | HOWTO (R_NDS32_TLS_LE_15S2, /* type */ | |
1883 | 2, /* rightshift */ | |
1884 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1885 | 15, /* bitsize */ | |
1886 | FALSE, /* pc_relative */ | |
1887 | 0, /* bitpos */ | |
1888 | complain_overflow_signed, /* complain_on_overflow */ | |
1889 | bfd_elf_generic_reloc, /* special_function */ | |
1890 | "R_NDS32_TLS_LE_15S2", /* name */ | |
1891 | FALSE, /* partial_inplace */ | |
1892 | 0x7fff, /* src_mask */ | |
1893 | 0x7fff, /* dst_mask */ | |
1894 | FALSE), /* pcrel_offset */ | |
1895 | ||
1896 | /* Relax hint for unconditional call sequence */ | |
1897 | HOWTO (R_NDS32_LONGCALL4, /* type */ | |
1898 | 0, /* rightshift */ | |
1899 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1900 | 32, /* bitsize */ | |
1901 | FALSE, /* pc_relative */ | |
1902 | 0, /* bitpos */ | |
1903 | complain_overflow_dont, /* complain_on_overflow */ | |
1904 | nds32_elf_ignore_reloc, /* special_function */ | |
1905 | "R_NDS32_LONGCALL4", /* name */ | |
1906 | FALSE, /* partial_inplace */ | |
1907 | 0xffffffff, /* src_mask */ | |
1908 | 0xffffffff, /* dst_mask */ | |
1909 | FALSE), /* pcrel_offset */ | |
1910 | ||
1911 | /* Relax hint for conditional call sequence. */ | |
1912 | HOWTO (R_NDS32_LONGCALL5, /* type */ | |
1913 | 0, /* rightshift */ | |
1914 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1915 | 32, /* bitsize */ | |
1916 | FALSE, /* pc_relative */ | |
1917 | 0, /* bitpos */ | |
1918 | complain_overflow_dont, /* complain_on_overflow */ | |
1919 | nds32_elf_ignore_reloc, /* special_function */ | |
1920 | "R_NDS32_LONGCALL5", /* name */ | |
1921 | FALSE, /* partial_inplace */ | |
1922 | 0xffffffff, /* src_mask */ | |
1923 | 0xffffffff, /* dst_mask */ | |
1924 | FALSE), /* pcrel_offset */ | |
1925 | ||
1926 | /* Relax hint for conditional call sequence. */ | |
1927 | HOWTO (R_NDS32_LONGCALL6, /* type */ | |
1928 | 0, /* rightshift */ | |
1929 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1930 | 32, /* bitsize */ | |
1931 | FALSE, /* pc_relative */ | |
1932 | 0, /* bitpos */ | |
1933 | complain_overflow_dont, /* complain_on_overflow */ | |
1934 | nds32_elf_ignore_reloc, /* special_function */ | |
1935 | "R_NDS32_LONGCALL6", /* name */ | |
1936 | FALSE, /* partial_inplace */ | |
1937 | 0xffffffff, /* src_mask */ | |
1938 | 0xffffffff, /* dst_mask */ | |
1939 | FALSE), /* pcrel_offset */ | |
1940 | ||
1941 | /* Relax hint for unconditional branch sequence. */ | |
1942 | HOWTO (R_NDS32_LONGJUMP4, /* type */ | |
1943 | 0, /* rightshift */ | |
1944 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1945 | 32, /* bitsize */ | |
1946 | FALSE, /* pc_relative */ | |
1947 | 0, /* bitpos */ | |
1948 | complain_overflow_dont, /* complain_on_overflow */ | |
1949 | nds32_elf_ignore_reloc, /* special_function */ | |
1950 | "R_NDS32_LONGJUMP4", /* name */ | |
1951 | FALSE, /* partial_inplace */ | |
1952 | 0xffffffff, /* src_mask */ | |
1953 | 0xffffffff, /* dst_mask */ | |
1954 | FALSE), /* pcrel_offset */ | |
1955 | ||
1956 | /* Relax hint for conditional branch sequence. */ | |
1957 | HOWTO (R_NDS32_LONGJUMP5, /* type */ | |
1958 | 0, /* rightshift */ | |
1959 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1960 | 32, /* bitsize */ | |
1961 | FALSE, /* pc_relative */ | |
1962 | 0, /* bitpos */ | |
1963 | complain_overflow_dont, /* complain_on_overflow */ | |
1964 | nds32_elf_ignore_reloc, /* special_function */ | |
1965 | "R_NDS32_LONGJUMP5", /* name */ | |
1966 | FALSE, /* partial_inplace */ | |
1967 | 0xffffffff, /* src_mask */ | |
1968 | 0xffffffff, /* dst_mask */ | |
1969 | FALSE), /* pcrel_offset */ | |
1970 | ||
1971 | /* Relax hint for conditional branch sequence. */ | |
1972 | HOWTO (R_NDS32_LONGJUMP6, /* type */ | |
1973 | 0, /* rightshift */ | |
1974 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1975 | 32, /* bitsize */ | |
1976 | FALSE, /* pc_relative */ | |
1977 | 0, /* bitpos */ | |
1978 | complain_overflow_dont, /* complain_on_overflow */ | |
1979 | nds32_elf_ignore_reloc, /* special_function */ | |
1980 | "R_NDS32_LONGJUMP6", /* name */ | |
1981 | FALSE, /* partial_inplace */ | |
1982 | 0xffffffff, /* src_mask */ | |
1983 | 0xffffffff, /* dst_mask */ | |
1984 | FALSE), /* pcrel_offset */ | |
1985 | ||
1986 | /* Relax hint for conditional branch sequence. */ | |
1987 | HOWTO (R_NDS32_LONGJUMP7, /* type */ | |
1988 | 0, /* rightshift */ | |
1989 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1990 | 32, /* bitsize */ | |
1991 | FALSE, /* pc_relative */ | |
1992 | 0, /* bitpos */ | |
1993 | complain_overflow_dont, /* complain_on_overflow */ | |
1994 | nds32_elf_ignore_reloc, /* special_function */ | |
1995 | "R_NDS32_LONGJUMP7", /* name */ | |
1996 | FALSE, /* partial_inplace */ | |
1997 | 0xffffffff, /* src_mask */ | |
1998 | 0xffffffff, /* dst_mask */ | |
1999 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
2000 | }; |
2001 | ||
2002 | /* Relocations used for relaxation. */ | |
2003 | static reloc_howto_type nds32_elf_relax_howto_table[] = | |
2004 | { | |
2005 | HOWTO (R_NDS32_RELAX_ENTRY, /* type */ | |
2006 | 0, /* rightshift */ | |
2007 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2008 | 32, /* bitsize */ | |
2009 | FALSE, /* pc_relative */ | |
2010 | 0, /* bitpos */ | |
2011 | complain_overflow_dont,/* complain_on_overflow */ | |
2012 | nds32_elf_ignore_reloc,/* special_function */ | |
2013 | "R_NDS32_RELAX_ENTRY", /* name */ | |
2014 | FALSE, /* partial_inplace */ | |
2015 | 0xffffffff, /* src_mask */ | |
2016 | 0xffffffff, /* dst_mask */ | |
2017 | FALSE), /* pcrel_offset */ | |
2018 | HOWTO (R_NDS32_GOT_SUFF, /* type */ | |
2019 | 0, /* rightshift */ | |
2020 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2021 | 32, /* bitsize */ | |
2022 | FALSE, /* pc_relative */ | |
2023 | 0, /* bitpos */ | |
2024 | complain_overflow_dont,/* complain_on_overflow */ | |
2025 | nds32_elf_ignore_reloc,/* special_function */ | |
2026 | "R_NDS32_GOT_SUFF", /* name */ | |
2027 | FALSE, /* partial_inplace */ | |
2028 | 0xffffffff, /* src_mask */ | |
2029 | 0xffffffff, /* dst_mask */ | |
2030 | FALSE), /* pcrel_offset */ | |
2031 | HOWTO (R_NDS32_GOTOFF_SUFF, /* type */ | |
2032 | 0, /* rightshift */ | |
2033 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2034 | 32, /* bitsize */ | |
2035 | FALSE, /* pc_relative */ | |
2036 | 0, /* bitpos */ | |
2037 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2038 | nds32_elf_ignore_reloc,/* special_function */ | |
2039 | "R_NDS32_GOTOFF_SUFF", /* name */ | |
2040 | FALSE, /* partial_inplace */ | |
2041 | 0xffffffff, /* src_mask */ | |
2042 | 0xffffffff, /* dst_mask */ | |
2043 | FALSE), /* pcrel_offset */ | |
2044 | HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */ | |
2045 | 0, /* rightshift */ | |
2046 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2047 | 32, /* bitsize */ | |
2048 | FALSE, /* pc_relative */ | |
2049 | 0, /* bitpos */ | |
2050 | complain_overflow_dont,/* complain_on_overflow */ | |
2051 | nds32_elf_ignore_reloc,/* special_function */ | |
2052 | "R_NDS32_PLT_GOT_SUFF",/* name */ | |
2053 | FALSE, /* partial_inplace */ | |
2054 | 0xffffffff, /* src_mask */ | |
2055 | 0xffffffff, /* dst_mask */ | |
2056 | FALSE), /* pcrel_offset */ | |
2057 | HOWTO (R_NDS32_MULCALL_SUFF, /* type */ | |
2058 | 0, /* rightshift */ | |
2059 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2060 | 32, /* bitsize */ | |
2061 | FALSE, /* pc_relative */ | |
2062 | 0, /* bitpos */ | |
2063 | complain_overflow_dont,/* complain_on_overflow */ | |
2064 | nds32_elf_ignore_reloc,/* special_function */ | |
2065 | "R_NDS32_MULCALL_SUFF",/* name */ | |
2066 | FALSE, /* partial_inplace */ | |
2067 | 0xffffffff, /* src_mask */ | |
2068 | 0xffffffff, /* dst_mask */ | |
2069 | FALSE), /* pcrel_offset */ | |
2070 | HOWTO (R_NDS32_PTR, /* type */ | |
2071 | 0, /* rightshift */ | |
2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2073 | 32, /* bitsize */ | |
2074 | FALSE, /* pc_relative */ | |
2075 | 0, /* bitpos */ | |
2076 | complain_overflow_dont,/* complain_on_overflow */ | |
2077 | nds32_elf_ignore_reloc,/* special_function */ | |
2078 | "R_NDS32_PTR", /* name */ | |
2079 | FALSE, /* partial_inplace */ | |
2080 | 0xffffffff, /* src_mask */ | |
2081 | 0xffffffff, /* dst_mask */ | |
2082 | FALSE), /* pcrel_offset */ | |
2083 | HOWTO (R_NDS32_PTR_COUNT, /* type */ | |
2084 | 0, /* rightshift */ | |
2085 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2086 | 32, /* bitsize */ | |
2087 | FALSE, /* pc_relative */ | |
2088 | 0, /* bitpos */ | |
2089 | complain_overflow_dont,/* complain_on_overflow */ | |
2090 | nds32_elf_ignore_reloc,/* special_function */ | |
2091 | "R_NDS32_PTR_COUNT", /* name */ | |
2092 | FALSE, /* partial_inplace */ | |
2093 | 0xffffffff, /* src_mask */ | |
2094 | 0xffffffff, /* dst_mask */ | |
2095 | FALSE), /* pcrel_offset */ | |
2096 | HOWTO (R_NDS32_PTR_RESOLVED, /* type */ | |
2097 | 0, /* rightshift */ | |
2098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2099 | 32, /* bitsize */ | |
2100 | FALSE, /* pc_relative */ | |
2101 | 0, /* bitpos */ | |
2102 | complain_overflow_dont,/* complain_on_overflow */ | |
2103 | nds32_elf_ignore_reloc,/* special_function */ | |
2104 | "R_NDS32_PTR_RESOLVED",/* name */ | |
2105 | FALSE, /* partial_inplace */ | |
2106 | 0xffffffff, /* src_mask */ | |
2107 | 0xffffffff, /* dst_mask */ | |
2108 | FALSE), /* pcrel_offset */ | |
2109 | HOWTO (R_NDS32_PLTBLOCK, /* type */ | |
2110 | 0, /* rightshift */ | |
2111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2112 | 32, /* bitsize */ | |
2113 | FALSE, /* pc_relative */ | |
2114 | 0, /* bitpos */ | |
2115 | complain_overflow_dont,/* complain_on_overflow */ | |
2116 | nds32_elf_ignore_reloc,/* special_function */ | |
2117 | "R_NDS32_PLTBLOCK", /* name */ | |
2118 | FALSE, /* partial_inplace */ | |
2119 | 0xffffffff, /* src_mask */ | |
2120 | 0xffffffff, /* dst_mask */ | |
2121 | FALSE), /* pcrel_offset */ | |
2122 | HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */ | |
2123 | 0, /* rightshift */ | |
2124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2125 | 32, /* bitsize */ | |
2126 | FALSE, /* pc_relative */ | |
2127 | 0, /* bitpos */ | |
2128 | complain_overflow_dont,/* complain_on_overflow */ | |
2129 | nds32_elf_ignore_reloc,/* special_function */ | |
2130 | "R_NDS32_RELAX_REGION_BEGIN", /* name */ | |
2131 | FALSE, /* partial_inplace */ | |
2132 | 0xffffffff, /* src_mask */ | |
2133 | 0xffffffff, /* dst_mask */ | |
2134 | FALSE), /* pcrel_offset */ | |
2135 | HOWTO (R_NDS32_RELAX_REGION_END, /* type */ | |
2136 | 0, /* rightshift */ | |
2137 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2138 | 32, /* bitsize */ | |
2139 | FALSE, /* pc_relative */ | |
2140 | 0, /* bitpos */ | |
2141 | complain_overflow_dont,/* complain_on_overflow */ | |
2142 | nds32_elf_ignore_reloc,/* special_function */ | |
2143 | "R_NDS32_RELAX_REGION_END", /* name */ | |
2144 | FALSE, /* partial_inplace */ | |
2145 | 0xffffffff, /* src_mask */ | |
2146 | 0xffffffff, /* dst_mask */ | |
2147 | FALSE), /* pcrel_offset */ | |
2148 | HOWTO (R_NDS32_MINUEND, /* type */ | |
2149 | 0, /* rightshift */ | |
2150 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2151 | 32, /* bitsize */ | |
2152 | FALSE, /* pc_relative */ | |
2153 | 0, /* bitpos */ | |
2154 | complain_overflow_dont,/* complain_on_overflow */ | |
2155 | nds32_elf_ignore_reloc,/* special_function */ | |
2156 | "R_NDS32_MINUEND", /* name */ | |
2157 | FALSE, /* partial_inplace */ | |
2158 | 0xffffffff, /* src_mask */ | |
2159 | 0xffffffff, /* dst_mask */ | |
2160 | FALSE), /* pcrel_offset */ | |
2161 | HOWTO (R_NDS32_SUBTRAHEND, /* type */ | |
2162 | 0, /* rightshift */ | |
2163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2164 | 32, /* bitsize */ | |
2165 | FALSE, /* pc_relative */ | |
2166 | 0, /* bitpos */ | |
2167 | complain_overflow_dont,/* complain_on_overflow */ | |
2168 | nds32_elf_ignore_reloc,/* special_function */ | |
2169 | "R_NDS32_SUBTRAHEND", /* name */ | |
2170 | FALSE, /* partial_inplace */ | |
2171 | 0xffffffff, /* src_mask */ | |
2172 | 0xffffffff, /* dst_mask */ | |
2173 | FALSE), /* pcrel_offset */ | |
2174 | HOWTO (R_NDS32_DIFF8, /* type */ | |
2175 | 0, /* rightshift */ | |
2176 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2177 | 8, /* bitsize */ | |
2178 | FALSE, /* pc_relative */ | |
2179 | 0, /* bitpos */ | |
2180 | complain_overflow_dont,/* complain_on_overflow */ | |
2181 | nds32_elf_ignore_reloc,/* special_function */ | |
2182 | "R_NDS32_DIFF8", /* name */ | |
2183 | FALSE, /* partial_inplace */ | |
2184 | 0x000000ff, /* src_mask */ | |
2185 | 0x000000ff, /* dst_mask */ | |
2186 | FALSE), /* pcrel_offset */ | |
2187 | HOWTO (R_NDS32_DIFF16, /* type */ | |
2188 | 0, /* rightshift */ | |
2189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2190 | 16, /* bitsize */ | |
2191 | FALSE, /* pc_relative */ | |
2192 | 0, /* bitpos */ | |
2193 | complain_overflow_dont,/* complain_on_overflow */ | |
2194 | nds32_elf_ignore_reloc,/* special_function */ | |
2195 | "R_NDS32_DIFF16", /* name */ | |
2196 | FALSE, /* partial_inplace */ | |
2197 | 0x0000ffff, /* src_mask */ | |
2198 | 0x0000ffff, /* dst_mask */ | |
2199 | FALSE), /* pcrel_offset */ | |
2200 | HOWTO (R_NDS32_DIFF32, /* type */ | |
2201 | 0, /* rightshift */ | |
2202 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2203 | 32, /* bitsize */ | |
2204 | FALSE, /* pc_relative */ | |
2205 | 0, /* bitpos */ | |
2206 | complain_overflow_dont,/* complain_on_overflow */ | |
2207 | nds32_elf_ignore_reloc,/* special_function */ | |
2208 | "R_NDS32_DIFF32", /* name */ | |
2209 | FALSE, /* partial_inplace */ | |
2210 | 0xffffffff, /* src_mask */ | |
2211 | 0xffffffff, /* dst_mask */ | |
2212 | FALSE), /* pcrel_offset */ | |
2213 | HOWTO (R_NDS32_DIFF_ULEB128, /* type */ | |
2214 | 0, /* rightshift */ | |
2215 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2216 | 0, /* bitsize */ | |
2217 | FALSE, /* pc_relative */ | |
2218 | 0, /* bitpos */ | |
2219 | complain_overflow_dont,/* complain_on_overflow */ | |
2220 | nds32_elf_ignore_reloc,/* special_function */ | |
2221 | "R_NDS32_DIFF_ULEB128",/* name */ | |
2222 | FALSE, /* partial_inplace */ | |
2223 | 0xffffffff, /* src_mask */ | |
2224 | 0xffffffff, /* dst_mask */ | |
2225 | FALSE), /* pcrel_offset */ | |
2226 | HOWTO (R_NDS32_DATA, /* type */ | |
2227 | 0, /* rightshift */ | |
2228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2229 | 32, /* bitsize */ | |
2230 | FALSE, /* pc_relative */ | |
2231 | 0, /* bitpos */ | |
2232 | complain_overflow_dont,/* complain_on_overflow */ | |
2233 | nds32_elf_ignore_reloc,/* special_function */ | |
2234 | "R_NDS32_DATA", /* name */ | |
2235 | FALSE, /* partial_inplace */ | |
2236 | 0xffffffff, /* src_mask */ | |
2237 | 0xffffffff, /* dst_mask */ | |
2238 | FALSE), /* pcrel_offset */ | |
2239 | HOWTO (R_NDS32_TRAN, /* type */ | |
2240 | 0, /* rightshift */ | |
2241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2242 | 32, /* bitsize */ | |
2243 | FALSE, /* pc_relative */ | |
2244 | 0, /* bitpos */ | |
2245 | complain_overflow_dont,/* complain_on_overflow */ | |
2246 | nds32_elf_ignore_reloc,/* special_function */ | |
2247 | "R_NDS32_TRAN", /* name */ | |
2248 | FALSE, /* partial_inplace */ | |
2249 | 0xffffffff, /* src_mask */ | |
2250 | 0xffffffff, /* dst_mask */ | |
2251 | FALSE), /* pcrel_offset */ | |
1c8f6a4d KLC |
2252 | HOWTO (R_NDS32_TLS_LE_ADD, /* type */ |
2253 | 0, /* rightshift */ | |
2254 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2255 | 32, /* bitsize */ | |
2256 | FALSE, /* pc_relative */ | |
2257 | 0, /* bitpos */ | |
2258 | complain_overflow_dont, /* complain_on_overflow */ | |
2259 | nds32_elf_ignore_reloc, /* special_function */ | |
2260 | "R_NDS32_TLS_LE_ADD", /* name */ | |
2261 | FALSE, /* partial_inplace */ | |
2262 | 0xffffffff, /* src_mask */ | |
2263 | 0xffffffff, /* dst_mask */ | |
2264 | FALSE), /* pcrel_offset */ | |
2265 | HOWTO (R_NDS32_TLS_LE_LS, /* type */ | |
2266 | 0, /* rightshift */ | |
2267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2268 | 32, /* bitsize */ | |
2269 | FALSE, /* pc_relative */ | |
2270 | 0, /* bitpos */ | |
2271 | complain_overflow_dont, /* complain_on_overflow */ | |
2272 | nds32_elf_ignore_reloc, /* special_function */ | |
2273 | "R_NDS32_TLS_LE_LS", /* name */ | |
2274 | FALSE, /* partial_inplace */ | |
2275 | 0xffffffff, /* src_mask */ | |
2276 | 0xffffffff, /* dst_mask */ | |
2277 | FALSE), /* pcrel_offset */ | |
2278 | HOWTO (R_NDS32_EMPTY, /* type */ | |
2279 | 0, /* rightshift */ | |
2280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2281 | 32, /* bitsize */ | |
2282 | FALSE, /* pc_relative */ | |
2283 | 0, /* bitpos */ | |
2284 | complain_overflow_dont, /* complain_on_overflow */ | |
2285 | nds32_elf_ignore_reloc, /* special_function */ | |
2286 | "R_NDS32_EMPTY", /* name */ | |
2287 | FALSE, /* partial_inplace */ | |
2288 | 0xffffffff, /* src_mask */ | |
2289 | 0xffffffff, /* dst_mask */ | |
2290 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
2291 | }; |
2292 | ||
2293 | \f | |
2294 | /* nds32_insertion_sort sorts an array with nmemb elements of size size. | |
2295 | This prototype is the same as qsort (). */ | |
2296 | ||
2297 | void | |
2298 | nds32_insertion_sort (void *base, size_t nmemb, size_t size, | |
2299 | int (*compar) (const void *lhs, const void *rhs)) | |
2300 | { | |
2301 | char *ptr = (char *) base; | |
1c8f6a4d | 2302 | int i, j; |
e1fa0163 | 2303 | char *tmp = xmalloc (size); |
35c08157 KLC |
2304 | |
2305 | /* If i is less than j, i is inserted before j. | |
2306 | ||
2307 | |---- j ----- i --------------| | |
2308 | \ / \ / | |
2309 | sorted unsorted | |
2310 | */ | |
2311 | ||
1c8f6a4d | 2312 | for (i = 1; i < (int) nmemb; i++) |
35c08157 | 2313 | { |
1c8f6a4d KLC |
2314 | for (j = (i - 1); j >= 0; j--) |
2315 | if (compar (ptr + i * size, ptr + j * size) >= 0) | |
35c08157 KLC |
2316 | break; |
2317 | ||
1c8f6a4d KLC |
2318 | j++; |
2319 | ||
35c08157 | 2320 | if (i == j) |
1c8f6a4d | 2321 | continue; /* i is in order. */ |
35c08157 KLC |
2322 | |
2323 | memcpy (tmp, ptr + i * size, size); | |
2324 | memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size); | |
2325 | memcpy (ptr + j * size, tmp, size); | |
2326 | } | |
e1fa0163 | 2327 | free (tmp); |
35c08157 KLC |
2328 | } |
2329 | ||
2330 | /* Sort relocation by r_offset. | |
2331 | ||
2332 | We didn't use qsort () in stdlib, because quick-sort is not a stable sorting | |
2333 | algorithm. Relocations at the same r_offset must keep their order. | |
2334 | For example, RELAX_ENTRY must be the very first relocation entry. | |
2335 | ||
2336 | Currently, this function implements insertion-sort. | |
2337 | ||
2338 | FIXME: If we already sort them in assembler, why bother sort them | |
2339 | here again? */ | |
2340 | ||
2341 | static int | |
2342 | compar_reloc (const void *lhs, const void *rhs) | |
2343 | { | |
2344 | const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs; | |
2345 | const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs; | |
2346 | ||
2347 | if (l->r_offset > r->r_offset) | |
2348 | return 1; | |
2349 | else if (l->r_offset == r->r_offset) | |
2350 | return 0; | |
2351 | else | |
2352 | return -1; | |
2353 | } | |
2354 | ||
2355 | /* Functions listed below are only used for old relocs. | |
2356 | * nds32_elf_9_pcrel_reloc | |
2357 | * nds32_elf_do_9_pcrel_reloc | |
2358 | * nds32_elf_hi20_reloc | |
2359 | * nds32_elf_relocate_hi20 | |
2360 | * nds32_elf_lo12_reloc | |
2361 | * nds32_elf_sda15_reloc | |
2362 | * nds32_elf_generic_reloc | |
2363 | */ | |
2364 | ||
2365 | /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */ | |
2366 | ||
2367 | static bfd_reloc_status_type | |
2368 | nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2369 | void *data, asection *input_section, bfd *output_bfd, | |
2370 | char **error_message ATTRIBUTE_UNUSED) | |
2371 | { | |
2372 | /* This part is from bfd_elf_generic_reloc. */ | |
2373 | if (output_bfd != (bfd *) NULL | |
2374 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2375 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2376 | { | |
2377 | reloc_entry->address += input_section->output_offset; | |
2378 | return bfd_reloc_ok; | |
2379 | } | |
2380 | ||
2381 | if (output_bfd != NULL) | |
2382 | { | |
2383 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2384 | return bfd_reloc_continue; | |
2385 | } | |
2386 | ||
2387 | return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto, | |
2388 | input_section, | |
2389 | data, reloc_entry->address, | |
2390 | symbol->section, | |
2391 | (symbol->value | |
2392 | + symbol->section->output_section->vma | |
2393 | + symbol->section->output_offset), | |
2394 | reloc_entry->addend); | |
2395 | } | |
2396 | ||
2397 | /* Utility to actually perform an R_NDS32_9_PCREL reloc. */ | |
2398 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) | |
2399 | ||
2400 | static bfd_reloc_status_type | |
2401 | nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto, | |
2402 | asection *input_section, bfd_byte *data, | |
1c8f6a4d KLC |
2403 | bfd_vma offset, |
2404 | asection *symbol_section ATTRIBUTE_UNUSED, | |
35c08157 KLC |
2405 | bfd_vma symbol_value, bfd_vma addend) |
2406 | { | |
2407 | bfd_signed_vma relocation; | |
2408 | unsigned short x; | |
2409 | bfd_reloc_status_type status; | |
2410 | ||
2411 | /* Sanity check the address (offset in section). */ | |
2412 | if (offset > bfd_get_section_limit (abfd, input_section)) | |
2413 | return bfd_reloc_outofrange; | |
2414 | ||
2415 | relocation = symbol_value + addend; | |
2416 | /* Make it pc relative. */ | |
2417 | relocation -= (input_section->output_section->vma | |
2418 | + input_section->output_offset); | |
2419 | /* These jumps mask off the lower two bits of the current address | |
2420 | before doing pcrel calculations. */ | |
2421 | relocation -= (offset & -(bfd_vma) 2); | |
2422 | ||
1c8f6a4d | 2423 | if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1) |
35c08157 KLC |
2424 | status = bfd_reloc_overflow; |
2425 | else | |
2426 | status = bfd_reloc_ok; | |
2427 | ||
2428 | x = bfd_getb16 (data + offset); | |
2429 | ||
2430 | relocation >>= howto->rightshift; | |
2431 | relocation <<= howto->bitpos; | |
2432 | x = (x & ~howto->dst_mask) | |
2433 | | (((x & howto->src_mask) + relocation) & howto->dst_mask); | |
2434 | ||
2435 | bfd_putb16 ((bfd_vma) x, data + offset); | |
2436 | ||
2437 | return status; | |
2438 | } | |
2439 | ||
2440 | /* Handle the R_NDS32_HI20_[SU]LO relocs. | |
2441 | HI20_SLO is for the add3 and load/store with displacement instructions. | |
2442 | HI20 is for the or3 instruction. | |
2443 | For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to | |
2444 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then | |
2445 | we must add one to the high 16 bytes (which will get subtracted off when | |
2446 | the low 16 bits are added). | |
2447 | These relocs have to be done in combination with an R_NDS32_LO12 reloc | |
2448 | because there is a carry from the LO12 to the HI20. Here we just save | |
2449 | the information we need; we do the actual relocation when we see the LO12. | |
2450 | This code is copied from the elf32-mips.c. We also support an arbitrary | |
2451 | number of HI20 relocs to be associated with a single LO12 reloc. The | |
2452 | assembler sorts the relocs to ensure each HI20 immediately precedes its | |
2453 | LO12. However if there are multiple copies, the assembler may not find | |
2454 | the real LO12 so it picks the first one it finds. */ | |
2455 | ||
2456 | struct nds32_hi20 | |
2457 | { | |
2458 | struct nds32_hi20 *next; | |
2459 | bfd_byte *addr; | |
2460 | bfd_vma addend; | |
2461 | }; | |
2462 | ||
2463 | static struct nds32_hi20 *nds32_hi20_list; | |
2464 | ||
2465 | static bfd_reloc_status_type | |
2466 | nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2467 | asymbol *symbol, void *data, asection *input_section, | |
2468 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2469 | { | |
2470 | bfd_reloc_status_type ret; | |
2471 | bfd_vma relocation; | |
2472 | struct nds32_hi20 *n; | |
2473 | ||
2474 | /* This part is from bfd_elf_generic_reloc. | |
2475 | If we're relocating, and this an external symbol, we don't want | |
2476 | to change anything. */ | |
2477 | if (output_bfd != (bfd *) NULL | |
2478 | && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) | |
2479 | { | |
2480 | reloc_entry->address += input_section->output_offset; | |
2481 | return bfd_reloc_ok; | |
2482 | } | |
2483 | ||
2484 | /* Sanity check the address (offset in section). */ | |
2485 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
2486 | return bfd_reloc_outofrange; | |
2487 | ||
2488 | ret = bfd_reloc_ok; | |
2489 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2490 | ret = bfd_reloc_undefined; | |
2491 | ||
2492 | if (bfd_is_com_section (symbol->section)) | |
2493 | relocation = 0; | |
2494 | else | |
2495 | relocation = symbol->value; | |
2496 | ||
2497 | relocation += symbol->section->output_section->vma; | |
2498 | relocation += symbol->section->output_offset; | |
2499 | relocation += reloc_entry->addend; | |
2500 | ||
2501 | /* Save the information, and let LO12 do the actual relocation. */ | |
2502 | n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
2503 | if (n == NULL) | |
2504 | return bfd_reloc_outofrange; | |
2505 | ||
2506 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
2507 | n->addend = relocation; | |
2508 | n->next = nds32_hi20_list; | |
2509 | nds32_hi20_list = n; | |
2510 | ||
2511 | if (output_bfd != (bfd *) NULL) | |
2512 | reloc_entry->address += input_section->output_offset; | |
2513 | ||
2514 | return ret; | |
2515 | } | |
2516 | ||
2517 | /* Handle an NDS32 ELF HI20 reloc. */ | |
2518 | ||
2519 | static void | |
2520 | nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED, | |
2521 | int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi, | |
2522 | Elf_Internal_Rela *rello, bfd_byte *contents, | |
2523 | bfd_vma addend) | |
2524 | { | |
2525 | unsigned long insn; | |
2526 | bfd_vma addlo; | |
2527 | ||
2528 | insn = bfd_getb32 (contents + relhi->r_offset); | |
2529 | ||
2530 | addlo = bfd_getb32 (contents + rello->r_offset); | |
2531 | addlo &= 0xfff; | |
2532 | ||
2533 | addend += ((insn & 0xfffff) << 20) + addlo; | |
2534 | ||
2535 | insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff); | |
2536 | bfd_putb32 (insn, contents + relhi->r_offset); | |
2537 | } | |
2538 | ||
2539 | /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit | |
2540 | inplace relocation; this function exists in order to do the | |
2541 | R_NDS32_HI20_[SU]LO relocation described above. */ | |
2542 | ||
2543 | static bfd_reloc_status_type | |
2544 | nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol, | |
2545 | void *data, asection *input_section, bfd *output_bfd, | |
2546 | char **error_message) | |
2547 | { | |
2548 | /* This part is from bfd_elf_generic_reloc. | |
2549 | If we're relocating, and this an external symbol, we don't want | |
2550 | to change anything. */ | |
2551 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2552 | && reloc_entry->addend == 0) | |
2553 | { | |
2554 | reloc_entry->address += input_section->output_offset; | |
2555 | return bfd_reloc_ok; | |
2556 | } | |
2557 | ||
2558 | if (nds32_hi20_list != NULL) | |
2559 | { | |
2560 | struct nds32_hi20 *l; | |
2561 | ||
2562 | l = nds32_hi20_list; | |
2563 | while (l != NULL) | |
2564 | { | |
2565 | unsigned long insn; | |
2566 | unsigned long val; | |
2567 | unsigned long vallo; | |
2568 | struct nds32_hi20 *next; | |
2569 | ||
2570 | /* Do the HI20 relocation. Note that we actually don't need | |
2571 | to know anything about the LO12 itself, except where to | |
2572 | find the low 12 bits of the addend needed by the LO12. */ | |
2573 | insn = bfd_getb32 (l->addr); | |
2574 | vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address); | |
2575 | vallo &= 0xfff; | |
2576 | switch (reloc_entry->howto->type) | |
2577 | { | |
2578 | case R_NDS32_LO12S3: | |
2579 | vallo <<= 3; | |
2580 | break; | |
2581 | ||
2582 | case R_NDS32_LO12S2: | |
2583 | vallo <<= 2; | |
2584 | break; | |
2585 | ||
2586 | case R_NDS32_LO12S1: | |
2587 | vallo <<= 1; | |
2588 | break; | |
2589 | ||
2590 | case R_NDS32_LO12S0: | |
2591 | vallo <<= 0; | |
2592 | break; | |
2593 | } | |
2594 | ||
2595 | val = ((insn & 0xfffff) << 12) + vallo; | |
2596 | val += l->addend; | |
2597 | ||
2598 | insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff); | |
2599 | bfd_putb32 ((bfd_vma) insn, l->addr); | |
2600 | ||
2601 | next = l->next; | |
2602 | free (l); | |
2603 | l = next; | |
2604 | } | |
2605 | ||
2606 | nds32_hi20_list = NULL; | |
2607 | } | |
2608 | ||
2609 | /* Now do the LO12 reloc in the usual way. | |
2610 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2611 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2612 | pass the handling back to bfd_install_relocation which will install | |
2613 | a section relative addend which is wrong. */ | |
2614 | return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, | |
2615 | input_section, output_bfd, error_message); | |
2616 | } | |
2617 | ||
2618 | /* Do generic partial_inplace relocation. | |
2619 | This is a local replacement for bfd_elf_generic_reloc. */ | |
2620 | ||
2621 | static bfd_reloc_status_type | |
2622 | nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry, | |
2623 | asymbol *symbol, void *data, asection *input_section, | |
2624 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2625 | { | |
2626 | bfd_reloc_status_type ret; | |
2627 | bfd_vma relocation; | |
2628 | bfd_byte *inplace_address; | |
2629 | ||
2630 | /* This part is from bfd_elf_generic_reloc. | |
2631 | If we're relocating, and this an external symbol, we don't want | |
2632 | to change anything. */ | |
2633 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2634 | && reloc_entry->addend == 0) | |
2635 | { | |
2636 | reloc_entry->address += input_section->output_offset; | |
2637 | return bfd_reloc_ok; | |
2638 | } | |
2639 | ||
2640 | /* Now do the reloc in the usual way. | |
2641 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2642 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2643 | pass the handling back to bfd_install_relocation which will install | |
2644 | a section relative addend which is wrong. */ | |
2645 | ||
2646 | /* Sanity check the address (offset in section). */ | |
2647 | if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) | |
2648 | return bfd_reloc_outofrange; | |
2649 | ||
2650 | ret = bfd_reloc_ok; | |
2651 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2652 | ret = bfd_reloc_undefined; | |
2653 | ||
2654 | if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL) | |
2655 | relocation = 0; | |
2656 | else | |
2657 | relocation = symbol->value; | |
2658 | ||
2659 | /* Only do this for a final link. */ | |
2660 | if (output_bfd == (bfd *) NULL) | |
2661 | { | |
2662 | relocation += symbol->section->output_section->vma; | |
2663 | relocation += symbol->section->output_offset; | |
2664 | } | |
2665 | ||
2666 | relocation += reloc_entry->addend; | |
2667 | switch (reloc_entry->howto->type) | |
2668 | { | |
2669 | case R_NDS32_LO12S3: | |
2670 | relocation >>= 3; | |
2671 | break; | |
2672 | ||
2673 | case R_NDS32_LO12S2: | |
2674 | relocation >>= 2; | |
2675 | break; | |
2676 | ||
2677 | case R_NDS32_LO12S1: | |
2678 | relocation >>= 1; | |
2679 | break; | |
2680 | ||
2681 | case R_NDS32_LO12S0: | |
2682 | default: | |
2683 | relocation >>= 0; | |
2684 | break; | |
2685 | } | |
2686 | ||
2687 | inplace_address = (bfd_byte *) data + reloc_entry->address; | |
2688 | ||
2689 | #define DOIT(x) \ | |
2690 | x = ((x & ~reloc_entry->howto->dst_mask) | \ | |
2691 | (((x & reloc_entry->howto->src_mask) + relocation) & \ | |
2692 | reloc_entry->howto->dst_mask)) | |
2693 | ||
2694 | switch (reloc_entry->howto->size) | |
2695 | { | |
2696 | case 1: | |
2697 | { | |
2698 | short x = bfd_getb16 (inplace_address); | |
2699 | ||
2700 | DOIT (x); | |
2701 | bfd_putb16 ((bfd_vma) x, inplace_address); | |
2702 | } | |
2703 | break; | |
2704 | case 2: | |
2705 | { | |
2706 | unsigned long x = bfd_getb32 (inplace_address); | |
2707 | ||
2708 | DOIT (x); | |
2709 | bfd_putb32 ((bfd_vma) x, inplace_address); | |
2710 | } | |
2711 | break; | |
2712 | default: | |
2713 | BFD_ASSERT (0); | |
2714 | } | |
2715 | ||
2716 | if (output_bfd != (bfd *) NULL) | |
2717 | reloc_entry->address += input_section->output_offset; | |
2718 | ||
2719 | return ret; | |
2720 | } | |
2721 | ||
2722 | /* Handle the R_NDS32_SDA15 reloc. | |
2723 | This reloc is used to compute the address of objects in the small data area | |
2724 | and to perform loads and stores from that area. | |
2725 | The lower 15 bits are sign extended and added to the register specified | |
2726 | in the instruction, which is assumed to point to _SDA_BASE_. | |
2727 | ||
2728 | Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on | |
2729 | the access size, this must be taken care of. */ | |
2730 | ||
2731 | static bfd_reloc_status_type | |
2732 | nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2733 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2734 | asection *input_section, bfd *output_bfd, | |
2735 | char **error_message ATTRIBUTE_UNUSED) | |
2736 | { | |
2737 | /* This part is from bfd_elf_generic_reloc. */ | |
2738 | if (output_bfd != (bfd *) NULL | |
2739 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2740 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2741 | { | |
2742 | reloc_entry->address += input_section->output_offset; | |
2743 | return bfd_reloc_ok; | |
2744 | } | |
2745 | ||
2746 | if (output_bfd != NULL) | |
2747 | { | |
2748 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2749 | return bfd_reloc_continue; | |
2750 | } | |
2751 | ||
2752 | /* FIXME: not sure what to do here yet. But then again, the linker | |
2753 | may never call us. */ | |
2754 | abort (); | |
2755 | } | |
2756 | ||
2757 | /* nds32_elf_ignore_reloc is the special function for | |
2758 | relocation types which don't need to be relocated | |
2759 | like relaxation relocation types. | |
2760 | This function simply return bfd_reloc_ok when it is | |
2761 | invoked. */ | |
2762 | ||
2763 | static bfd_reloc_status_type | |
2764 | nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2765 | asymbol *symbol ATTRIBUTE_UNUSED, | |
2766 | void *data ATTRIBUTE_UNUSED, asection *input_section, | |
2767 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2768 | { | |
2769 | if (output_bfd != NULL) | |
2770 | reloc_entry->address += input_section->output_offset; | |
2771 | ||
2772 | return bfd_reloc_ok; | |
2773 | } | |
2774 | \f | |
2775 | ||
2776 | /* Map BFD reloc types to NDS32 ELF reloc types. */ | |
2777 | ||
2778 | struct nds32_reloc_map_entry | |
2779 | { | |
2780 | bfd_reloc_code_real_type bfd_reloc_val; | |
2781 | unsigned char elf_reloc_val; | |
2782 | }; | |
2783 | ||
2784 | static const struct nds32_reloc_map_entry nds32_reloc_map[] = | |
2785 | { | |
2786 | {BFD_RELOC_NONE, R_NDS32_NONE}, | |
2787 | {BFD_RELOC_16, R_NDS32_16_RELA}, | |
2788 | {BFD_RELOC_32, R_NDS32_32_RELA}, | |
2789 | {BFD_RELOC_NDS32_20, R_NDS32_20_RELA}, | |
2790 | {BFD_RELOC_NDS32_5, R_NDS32_5_RELA}, | |
2791 | {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA}, | |
2792 | {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA}, | |
2793 | {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA}, | |
2794 | {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA}, | |
2795 | {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA}, | |
2796 | {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA}, | |
2797 | {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA}, | |
2798 | {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA}, | |
2799 | {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA}, | |
2800 | {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA}, | |
2801 | {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA}, | |
2802 | {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA}, | |
2803 | {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA}, | |
2804 | {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA}, | |
2805 | {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA}, | |
2806 | {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA}, | |
2807 | {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT}, | |
2808 | {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY}, | |
2809 | ||
2810 | {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20}, | |
2811 | {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL}, | |
2812 | {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL}, | |
2813 | {BFD_RELOC_NDS32_COPY, R_NDS32_COPY}, | |
2814 | {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT}, | |
2815 | {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT}, | |
2816 | {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE}, | |
2817 | {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF}, | |
2818 | {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20}, | |
2819 | {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20}, | |
2820 | {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12}, | |
2821 | {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15}, | |
2822 | {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19}, | |
2823 | {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20}, | |
2824 | {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12}, | |
2825 | {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20}, | |
2826 | {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12}, | |
2827 | {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15}, | |
2828 | {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19}, | |
2829 | {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16}, | |
2830 | {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL}, | |
2831 | {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1}, | |
2832 | {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2}, | |
2833 | {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3}, | |
1c8f6a4d KLC |
2834 | {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4}, |
2835 | {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5}, | |
2836 | {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6}, | |
35c08157 KLC |
2837 | {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1}, |
2838 | {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2}, | |
2839 | {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3}, | |
1c8f6a4d KLC |
2840 | {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4}, |
2841 | {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5}, | |
2842 | {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6}, | |
2843 | {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7}, | |
35c08157 KLC |
2844 | {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE}, |
2845 | {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA}, | |
2846 | {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA}, | |
2847 | {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA}, | |
2848 | {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA}, | |
2849 | {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20}, | |
2850 | {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12}, | |
2851 | {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20}, | |
2852 | {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12}, | |
2853 | {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15}, | |
2854 | {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19}, | |
2855 | {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20}, | |
2856 | {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA}, | |
2857 | {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA}, | |
2858 | {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA}, | |
2859 | {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA}, | |
2860 | {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA}, | |
2861 | {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA}, | |
2862 | {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA}, | |
2863 | {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA}, | |
2864 | {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA}, | |
2865 | {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA}, | |
2866 | {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA}, | |
2867 | {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA}, | |
2868 | {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA}, | |
2869 | {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF}, | |
2870 | {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF}, | |
2871 | {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA}, | |
2872 | {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA}, | |
2873 | {BFD_RELOC_NDS32_PTR, R_NDS32_PTR}, | |
2874 | {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT}, | |
2875 | {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF}, | |
2876 | {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED}, | |
2877 | {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY}, | |
2878 | {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF}, | |
2879 | {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK}, | |
2880 | {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN}, | |
2881 | {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END}, | |
2882 | {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND}, | |
2883 | {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND}, | |
1c8f6a4d | 2884 | {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY}, |
35c08157 KLC |
2885 | |
2886 | {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8}, | |
2887 | {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16}, | |
2888 | {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32}, | |
2889 | {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128}, | |
2890 | {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA}, | |
2891 | {BFD_RELOC_NDS32_DATA, R_NDS32_DATA}, | |
2892 | {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN}, | |
2893 | {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA}, | |
2894 | {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA}, | |
1c8f6a4d KLC |
2895 | {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20}, |
2896 | {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12}, | |
2897 | {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD}, | |
2898 | {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS}, | |
2899 | {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20}, | |
2900 | {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2}, | |
2901 | {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF}, | |
2902 | {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20}, | |
2903 | {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0}, | |
2904 | {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1}, | |
2905 | {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2}, | |
35c08157 KLC |
2906 | }; |
2907 | ||
2908 | /* Patch tag. */ | |
2909 | ||
2910 | static reloc_howto_type * | |
2911 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2912 | const char *r_name) | |
2913 | { | |
2914 | unsigned int i; | |
2915 | ||
2916 | for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++) | |
2917 | if (nds32_elf_howto_table[i].name != NULL | |
2918 | && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0) | |
2919 | return &nds32_elf_howto_table[i]; | |
2920 | ||
2921 | for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++) | |
2922 | if (nds32_elf_relax_howto_table[i].name != NULL | |
2923 | && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0) | |
2924 | return &nds32_elf_relax_howto_table[i]; | |
2925 | ||
2926 | return NULL; | |
2927 | } | |
2928 | ||
2929 | static reloc_howto_type * | |
2930 | bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code) | |
2931 | { | |
2932 | if (code < R_NDS32_RELAX_ENTRY) | |
2933 | { | |
2934 | BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table)); | |
2935 | return &nds32_elf_howto_table[code]; | |
2936 | } | |
2937 | else | |
2938 | { | |
2939 | BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY) | |
2940 | < ARRAY_SIZE (nds32_elf_relax_howto_table)); | |
2941 | return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY]; | |
2942 | } | |
2943 | } | |
2944 | ||
2945 | static reloc_howto_type * | |
2946 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2947 | bfd_reloc_code_real_type code) | |
2948 | { | |
2949 | unsigned int i; | |
2950 | ||
2951 | for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++) | |
2952 | { | |
2953 | if (nds32_reloc_map[i].bfd_reloc_val == code) | |
2954 | return bfd_elf32_bfd_reloc_type_table_lookup | |
2955 | (nds32_reloc_map[i].elf_reloc_val); | |
2956 | } | |
2957 | ||
2958 | return NULL; | |
2959 | } | |
2960 | ||
2961 | /* Set the howto pointer for an NDS32 ELF reloc. */ | |
2962 | ||
2963 | static void | |
2964 | nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
2965 | Elf_Internal_Rela *dst) | |
2966 | { | |
2967 | enum elf_nds32_reloc_type r_type; | |
2968 | ||
2969 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
2970 | if (r_type > R_NDS32_GNU_VTENTRY) |
2971 | { | |
64d29018 | 2972 | _bfd_error_handler (_("%B: invalid NDS32 reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
2973 | r_type = 0; |
2974 | } | |
35c08157 KLC |
2975 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); |
2976 | } | |
2977 | ||
2978 | static void | |
2979 | nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
2980 | Elf_Internal_Rela *dst) | |
2981 | { | |
2982 | BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE) | |
2983 | || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY) | |
2984 | && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max))); | |
2985 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info)); | |
2986 | } | |
2987 | ||
2988 | /* Support for core dump NOTE sections. | |
2989 | Reference to include/linux/elfcore.h in Linux. */ | |
2990 | ||
2991 | static bfd_boolean | |
2992 | nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2993 | { | |
2994 | int offset; | |
2995 | size_t size; | |
2996 | ||
2997 | switch (note->descsz) | |
2998 | { | |
2999 | case 0x114: | |
3000 | /* Linux/NDS32 32-bit, ABI1 */ | |
3001 | ||
3002 | /* pr_cursig */ | |
3003 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3004 | ||
3005 | /* pr_pid */ | |
3006 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
3007 | ||
3008 | /* pr_reg */ | |
3009 | offset = 72; | |
3010 | size = 200; | |
3011 | break; | |
3012 | ||
3013 | case 0xfc: | |
3014 | /* Linux/NDS32 32-bit */ | |
3015 | ||
3016 | /* pr_cursig */ | |
3017 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3018 | ||
3019 | /* pr_pid */ | |
3020 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
3021 | ||
3022 | /* pr_reg */ | |
3023 | offset = 72; | |
3024 | size = 176; | |
3025 | break; | |
3026 | ||
3027 | default: | |
3028 | return FALSE; | |
3029 | } | |
3030 | ||
3031 | /* Make a ".reg" section. */ | |
3032 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
3033 | size, note->descpos + offset); | |
3034 | } | |
3035 | ||
3036 | static bfd_boolean | |
3037 | nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3038 | { | |
3039 | switch (note->descsz) | |
3040 | { | |
3041 | case 124: | |
3042 | /* Linux/NDS32 */ | |
3043 | ||
3044 | /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */ | |
3045 | elf_tdata (abfd)->core->program = | |
3046 | _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3047 | elf_tdata (abfd)->core->command = | |
3048 | _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3049 | ||
3050 | default: | |
3051 | return FALSE; | |
3052 | } | |
3053 | ||
3054 | /* Note that for some reason, a spurious space is tacked | |
3055 | onto the end of the args in some (at least one anyway) | |
3056 | implementations, so strip it off if it exists. */ | |
3057 | { | |
3058 | char *command = elf_tdata (abfd)->core->command; | |
3059 | int n = strlen (command); | |
3060 | ||
3061 | if (0 < n && command[n - 1] == ' ') | |
3062 | command[n - 1] = '\0'; | |
3063 | } | |
3064 | ||
3065 | return TRUE; | |
3066 | } | |
3067 | ||
3068 | /* Hook called by the linker routine which adds symbols from an object | |
3069 | file. We must handle the special NDS32 section numbers here. | |
3070 | We also keep watching for whether we need to create the sdata special | |
3071 | linker sections. */ | |
3072 | ||
3073 | static bfd_boolean | |
3074 | nds32_elf_add_symbol_hook (bfd *abfd, | |
3075 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3076 | Elf_Internal_Sym *sym, | |
3077 | const char **namep ATTRIBUTE_UNUSED, | |
3078 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3079 | asection **secp, bfd_vma *valp) | |
3080 | { | |
3081 | switch (sym->st_shndx) | |
3082 | { | |
3083 | case SHN_COMMON: | |
3084 | /* Common symbols less than the GP size are automatically | |
3085 | treated as SHN_MIPS_SCOMMON symbols. */ | |
3086 | if (sym->st_size > elf_gp_size (abfd) | |
3087 | || ELF_ST_TYPE (sym->st_info) == STT_TLS) | |
3088 | break; | |
3089 | ||
3090 | /* st_value is the alignemnt constraint. | |
3091 | That might be its actual size if it is an array or structure. */ | |
3092 | switch (sym->st_value) | |
3093 | { | |
3094 | case 1: | |
3095 | *secp = bfd_make_section_old_way (abfd, ".scommon_b"); | |
3096 | break; | |
3097 | case 2: | |
3098 | *secp = bfd_make_section_old_way (abfd, ".scommon_h"); | |
3099 | break; | |
3100 | case 4: | |
3101 | *secp = bfd_make_section_old_way (abfd, ".scommon_w"); | |
3102 | break; | |
3103 | case 8: | |
3104 | *secp = bfd_make_section_old_way (abfd, ".scommon_d"); | |
3105 | break; | |
3106 | default: | |
3107 | return TRUE; | |
3108 | } | |
3109 | ||
3110 | (*secp)->flags |= SEC_IS_COMMON; | |
3111 | *valp = sym->st_size; | |
3112 | break; | |
3113 | } | |
3114 | ||
3115 | return TRUE; | |
3116 | } | |
3117 | ||
3118 | ||
3119 | /* This function can figure out the best location for a base register to access | |
3120 | data relative to this base register | |
3121 | INPUT: | |
3122 | sda_d0: size of first DOUBLE WORD data section | |
3123 | sda_w0: size of first WORD data section | |
3124 | sda_h0: size of first HALF WORD data section | |
3125 | sda_b : size of BYTE data section | |
3126 | sda_hi: size of second HALF WORD data section | |
3127 | sda_w1: size of second WORD data section | |
3128 | sda_d1: size of second DOUBLE WORD data section | |
3129 | OUTPUT: | |
3130 | offset (always positive) from the beginning of sda_d0 if OK | |
3131 | a negative error value if fail | |
3132 | NOTE: | |
3133 | these 7 sections have to be located back to back if exist | |
3134 | a pass in 0 value for non-existing section */ | |
3135 | ||
3136 | /* Due to the interpretation of simm15 field of load/store depending on | |
3137 | data accessing size, the organization of base register relative data shall | |
3138 | like the following figure | |
3139 | ------------------------------------------- | |
3140 | | DOUBLE WORD sized data (range +/- 128K) | |
3141 | ------------------------------------------- | |
3142 | | WORD sized data (range +/- 64K) | |
3143 | ------------------------------------------- | |
3144 | | HALF WORD sized data (range +/- 32K) | |
3145 | ------------------------------------------- | |
3146 | | BYTE sized data (range +/- 16K) | |
3147 | ------------------------------------------- | |
3148 | | HALF WORD sized data (range +/- 32K) | |
3149 | ------------------------------------------- | |
3150 | | WORD sized data (range +/- 64K) | |
3151 | ------------------------------------------- | |
3152 | | DOUBLE WORD sized data (range +/- 128K) | |
3153 | ------------------------------------------- | |
3154 | Its base register shall be set to access these data freely. */ | |
3155 | ||
3156 | /* We have to figure out the SDA_BASE value, so that we can adjust the | |
3157 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output | |
3158 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
3159 | target data. We don't need to adjust the symbol value for an | |
3160 | external symbol if we are producing relocatable output. */ | |
3161 | ||
3162 | static asection *sda_rela_sec = NULL; | |
3163 | ||
1c8f6a4d | 3164 | #define SDA_SECTION_NUM 10 |
35c08157 KLC |
3165 | |
3166 | static bfd_reloc_status_type | |
3167 | nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info, | |
3168 | bfd_vma *psb, bfd_boolean add_symbol) | |
3169 | { | |
3170 | int relax_fp_as_gp; | |
3171 | struct elf_nds32_link_hash_table *table; | |
3172 | struct bfd_link_hash_entry *h, *h2; | |
1c8f6a4d | 3173 | long unsigned int total = 0; |
35c08157 KLC |
3174 | |
3175 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); | |
3176 | if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak)) | |
3177 | { | |
3178 | asection *first = NULL, *final = NULL, *temp; | |
3179 | bfd_vma sda_base; | |
3180 | /* The first section must be 4-byte aligned to promise _SDA_BASE_ being | |
3181 | 4 byte-aligned. Therefore, it has to set the first section ".data" | |
3182 | 4 byte-aligned. */ | |
3183 | static const char sec_name[SDA_SECTION_NUM][10] = | |
3184 | { | |
3185 | ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b", | |
1c8f6a4d | 3186 | ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d" |
35c08157 KLC |
3187 | }; |
3188 | size_t i = 0; | |
3189 | ||
3190 | if (output_bfd->sections == NULL) | |
3191 | { | |
3192 | *psb = elf_gp (output_bfd); | |
3193 | return bfd_reloc_ok; | |
3194 | } | |
3195 | ||
3196 | /* Get the first and final section. */ | |
1c8f6a4d | 3197 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3198 | { |
3199 | temp = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3200 | if (temp && !first && (temp->size != 0 || temp->rawsize != 0)) | |
3201 | first = temp; | |
3202 | if (temp && (temp->size != 0 || temp->rawsize != 0)) | |
3203 | final = temp; | |
1c8f6a4d KLC |
3204 | |
3205 | /* Summarize the sections in order to check if joining .bss. */ | |
3206 | if (temp && temp->size != 0) | |
3207 | total += temp->size; | |
3208 | else if (temp && temp->rawsize != 0) | |
3209 | total += temp->rawsize; | |
3210 | ||
35c08157 KLC |
3211 | i++; |
3212 | } | |
3213 | ||
1c8f6a4d KLC |
3214 | /* Check .bss size. */ |
3215 | temp = bfd_get_section_by_name (output_bfd, ".bss"); | |
3216 | if (temp) | |
3217 | { | |
3218 | if (temp->size != 0) | |
3219 | total += temp->size; | |
3220 | else if (temp->rawsize != 0) | |
3221 | total += temp->rawsize; | |
3222 | ||
3223 | if (total < 0x80000) | |
3224 | { | |
3225 | if (!first && (temp->size != 0 || temp->rawsize != 0)) | |
3226 | first = temp; | |
3227 | if ((temp->size != 0 || temp->rawsize != 0)) | |
3228 | final = temp; | |
3229 | } | |
3230 | } | |
3231 | ||
35c08157 KLC |
3232 | if (first && final) |
3233 | { | |
3234 | /* The middle of data region. */ | |
1c8f6a4d | 3235 | sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2; |
35c08157 KLC |
3236 | |
3237 | /* Find the section sda_base located. */ | |
3238 | i = 0; | |
1c8f6a4d | 3239 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3240 | { |
3241 | final = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3242 | if (final && (final->size != 0 || final->rawsize != 0) | |
3243 | && sda_base >= final->vma) | |
3244 | { | |
3245 | first = final; | |
3246 | i++; | |
3247 | } | |
3248 | else | |
3249 | break; | |
3250 | } | |
3251 | } | |
3252 | else | |
3253 | { | |
3254 | /* There is not any data section in output bfd, and set _SDA_BASE_ in | |
3255 | first output section. */ | |
3256 | first = output_bfd->sections; | |
3257 | while (first && first->size == 0 && first->rawsize == 0) | |
3258 | first = first->next; | |
3259 | if (!first) | |
3260 | { | |
3261 | *psb = elf_gp (output_bfd); | |
3262 | return bfd_reloc_ok; | |
3263 | } | |
1c8f6a4d | 3264 | sda_base = first->vma + first->rawsize; |
35c08157 KLC |
3265 | } |
3266 | ||
3267 | sda_base -= first->vma; | |
3268 | sda_base = sda_base & (~7); | |
3269 | ||
3270 | if (!_bfd_generic_link_add_one_symbol | |
3271 | (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first, | |
3272 | (bfd_vma) sda_base, (const char *) NULL, FALSE, | |
3273 | get_elf_backend_data (output_bfd)->collect, &h)) | |
3274 | return FALSE; | |
3275 | ||
3276 | sda_rela_sec = first; | |
3277 | ||
3278 | table = nds32_elf_hash_table (info); | |
3279 | relax_fp_as_gp = table->relax_fp_as_gp; | |
3280 | if (relax_fp_as_gp) | |
3281 | { | |
3282 | h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME, | |
3283 | FALSE, FALSE, FALSE); | |
3284 | /* Define a weak FP_BASE_NAME here to prevent the undefined symbol. | |
3285 | And set FP equal to SDA_BASE to do relaxation for | |
3286 | la $fp, _FP_BASE_. */ | |
3287 | if (!_bfd_generic_link_add_one_symbol | |
3288 | (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK, | |
3289 | first, (bfd_vma) sda_base, (const char *) NULL, | |
3290 | FALSE, get_elf_backend_data (output_bfd)->collect, &h2)) | |
3291 | return FALSE; | |
3292 | } | |
3293 | } | |
3294 | ||
3295 | if (add_symbol == TRUE) | |
3296 | { | |
3297 | if (h) | |
3298 | { | |
3299 | /* Now set gp. */ | |
3300 | elf_gp (output_bfd) = (h->u.def.value | |
3301 | + h->u.def.section->output_section->vma | |
3302 | + h->u.def.section->output_offset); | |
3303 | } | |
3304 | else | |
3305 | { | |
3306 | (*_bfd_error_handler) (_("error: Can't find symbol: _SDA_BASE_.")); | |
3307 | return bfd_reloc_dangerous; | |
3308 | } | |
3309 | } | |
3310 | ||
3311 | *psb = h->u.def.value + h->u.def.section->output_section->vma | |
3312 | + h->u.def.section->output_offset; | |
3313 | return bfd_reloc_ok; | |
3314 | } | |
3315 | \f | |
3316 | ||
3317 | /* Return size of a PLT entry. */ | |
3318 | #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE | |
3319 | ||
3320 | ||
3321 | /* Create an entry in an nds32 ELF linker hash table. */ | |
3322 | ||
3323 | static struct bfd_hash_entry * | |
3324 | nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3325 | struct bfd_hash_table *table, | |
3326 | const char *string) | |
3327 | { | |
3328 | struct elf_nds32_link_hash_entry *ret; | |
3329 | ||
3330 | ret = (struct elf_nds32_link_hash_entry *) entry; | |
3331 | ||
3332 | /* Allocate the structure if it has not already been allocated by a | |
3333 | subclass. */ | |
3334 | if (ret == NULL) | |
3335 | ret = (struct elf_nds32_link_hash_entry *) | |
3336 | bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry)); | |
3337 | ||
3338 | if (ret == NULL) | |
3339 | return (struct bfd_hash_entry *) ret; | |
3340 | ||
3341 | /* Call the allocation method of the superclass. */ | |
3342 | ret = (struct elf_nds32_link_hash_entry *) | |
3343 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
3344 | ||
3345 | if (ret != NULL) | |
3346 | { | |
3347 | struct elf_nds32_link_hash_entry *eh; | |
3348 | ||
3349 | eh = (struct elf_nds32_link_hash_entry *) ret; | |
3350 | eh->dyn_relocs = NULL; | |
1c8f6a4d | 3351 | eh->tls_type = GOT_UNKNOWN; |
35c08157 KLC |
3352 | } |
3353 | ||
3354 | return (struct bfd_hash_entry *) ret; | |
3355 | } | |
3356 | ||
3357 | /* Create an nds32 ELF linker hash table. */ | |
3358 | ||
3359 | static struct bfd_link_hash_table * | |
3360 | nds32_elf_link_hash_table_create (bfd *abfd) | |
3361 | { | |
3362 | struct elf_nds32_link_hash_table *ret; | |
3363 | ||
3364 | bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table); | |
3365 | ||
3366 | ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt); | |
3367 | if (ret == NULL) | |
3368 | return NULL; | |
3369 | ||
3370 | /* patch tag. */ | |
3371 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3372 | nds32_elf_link_hash_newfunc, | |
3373 | sizeof (struct elf_nds32_link_hash_entry), | |
3374 | NDS32_ELF_DATA)) | |
3375 | { | |
3376 | free (ret); | |
3377 | return NULL; | |
3378 | } | |
3379 | ||
3380 | ret->sgot = NULL; | |
3381 | ret->sgotplt = NULL; | |
3382 | ret->srelgot = NULL; | |
3383 | ret->splt = NULL; | |
3384 | ret->srelplt = NULL; | |
3385 | ret->sdynbss = NULL; | |
3386 | ret->srelbss = NULL; | |
3387 | ret->sym_ld_script = NULL; | |
3388 | ret->ex9_export_file = NULL; | |
3389 | ret->ex9_import_file = NULL; | |
3390 | ||
3391 | return &ret->root.root; | |
3392 | } | |
3393 | ||
3394 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
3395 | shortcuts to them in our hash table. */ | |
3396 | ||
3397 | static bfd_boolean | |
3398 | create_got_section (bfd *dynobj, struct bfd_link_info *info) | |
3399 | { | |
3400 | struct elf_nds32_link_hash_table *htab; | |
3401 | ||
3402 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
3403 | return FALSE; | |
3404 | ||
3405 | htab = nds32_elf_hash_table (info); | |
3406 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3407 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
3408 | if (!htab->sgot || !htab->sgotplt) | |
3409 | abort (); | |
3410 | ||
3411 | /* _bfd_elf_create_got_section will create it for us. */ | |
3412 | htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3413 | if (htab->srelgot == NULL | |
3414 | || !bfd_set_section_flags (dynobj, htab->srelgot, | |
3415 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3416 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
3417 | | SEC_READONLY)) | |
3418 | || !bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
3419 | return FALSE; | |
3420 | ||
3421 | return TRUE; | |
3422 | } | |
3423 | ||
3424 | /* Create dynamic sections when linking against a dynamic object. */ | |
3425 | ||
3426 | static bfd_boolean | |
3427 | nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3428 | { | |
3429 | struct elf_nds32_link_hash_table *htab; | |
3430 | flagword flags, pltflags; | |
3431 | register asection *s; | |
3432 | const struct elf_backend_data *bed; | |
3433 | int ptralign = 2; /* 32-bit */ | |
3434 | ||
3435 | bed = get_elf_backend_data (abfd); | |
3436 | ||
3437 | htab = nds32_elf_hash_table (info); | |
3438 | ||
3439 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3440 | .rel[a].bss sections. */ | |
3441 | ||
3442 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3443 | | SEC_LINKER_CREATED); | |
3444 | ||
3445 | pltflags = flags; | |
3446 | pltflags |= SEC_CODE; | |
3447 | if (bed->plt_not_loaded) | |
3448 | pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS); | |
3449 | if (bed->plt_readonly) | |
3450 | pltflags |= SEC_READONLY; | |
3451 | ||
3452 | s = bfd_make_section (abfd, ".plt"); | |
3453 | htab->splt = s; | |
3454 | if (s == NULL | |
3455 | || !bfd_set_section_flags (abfd, s, pltflags) | |
3456 | || !bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
3457 | return FALSE; | |
3458 | ||
3459 | if (bed->want_plt_sym) | |
3460 | { | |
3461 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3462 | .plt section. */ | |
3463 | struct bfd_link_hash_entry *bh = NULL; | |
3464 | struct elf_link_hash_entry *h; | |
3465 | ||
3466 | if (!(_bfd_generic_link_add_one_symbol | |
3467 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
3468 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
3469 | get_elf_backend_data (abfd)->collect, &bh))) | |
3470 | return FALSE; | |
3471 | ||
3472 | h = (struct elf_link_hash_entry *) bh; | |
3473 | h->def_regular = 1; | |
3474 | h->type = STT_OBJECT; | |
3475 | ||
0e1862bb | 3476 | if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h)) |
35c08157 KLC |
3477 | return FALSE; |
3478 | } | |
3479 | ||
3480 | s = bfd_make_section (abfd, | |
3481 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | |
3482 | htab->srelplt = s; | |
3483 | if (s == NULL | |
3484 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3485 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3486 | return FALSE; | |
3487 | ||
3488 | if (htab->sgot == NULL && !create_got_section (abfd, info)) | |
3489 | return FALSE; | |
3490 | ||
3491 | { | |
3492 | const char *secname; | |
3493 | char *relname; | |
3494 | flagword secflags; | |
3495 | asection *sec; | |
3496 | ||
3497 | for (sec = abfd->sections; sec; sec = sec->next) | |
3498 | { | |
3499 | secflags = bfd_get_section_flags (abfd, sec); | |
3500 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
3501 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
3502 | continue; | |
3503 | secname = bfd_get_section_name (abfd, sec); | |
3504 | relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); | |
3505 | strcpy (relname, ".rela"); | |
3506 | strcat (relname, secname); | |
3507 | if (bfd_get_section_by_name (abfd, secname)) | |
3508 | continue; | |
3509 | s = bfd_make_section (abfd, relname); | |
3510 | if (s == NULL | |
3511 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3512 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3513 | return FALSE; | |
3514 | } | |
3515 | } | |
3516 | ||
3517 | if (bed->want_dynbss) | |
3518 | { | |
3519 | /* The .dynbss section is a place to put symbols which are defined | |
3520 | by dynamic objects, are referenced by regular objects, and are | |
3521 | not functions. We must allocate space for them in the process | |
3522 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3523 | initialize them at run time. The linker script puts the .dynbss | |
3524 | section into the .bss section of the final image. */ | |
3525 | s = bfd_make_section (abfd, ".dynbss"); | |
3526 | htab->sdynbss = s; | |
3527 | if (s == NULL | |
3528 | || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) | |
3529 | return FALSE; | |
3530 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3531 | normally needed. We need to create it here, though, so that the | |
3532 | linker will map it to an output section. We can't just create it | |
3533 | only if we need it, because we will not know whether we need it | |
3534 | until we have seen all the input files, and the first time the | |
3535 | main linker code calls BFD after examining all the input files | |
3536 | (size_dynamic_sections) the input sections have already been | |
3537 | mapped to the output sections. If the section turns out not to | |
3538 | be needed, we can discard it later. We will never need this | |
3539 | section when generating a shared object, since they do not use | |
3540 | copy relocs. */ | |
0e1862bb | 3541 | if (!bfd_link_pic (info)) |
35c08157 KLC |
3542 | { |
3543 | s = bfd_make_section (abfd, (bed->default_use_rela_p | |
3544 | ? ".rela.bss" : ".rel.bss")); | |
3545 | htab->srelbss = s; | |
3546 | if (s == NULL | |
3547 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3548 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3549 | return FALSE; | |
3550 | } | |
3551 | } | |
3552 | ||
3553 | return TRUE; | |
3554 | } | |
3555 | ||
3556 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
3557 | static void | |
3558 | nds32_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
3559 | struct elf_link_hash_entry *dir, | |
3560 | struct elf_link_hash_entry *ind) | |
3561 | { | |
3562 | struct elf_nds32_link_hash_entry *edir, *eind; | |
3563 | ||
3564 | edir = (struct elf_nds32_link_hash_entry *) dir; | |
3565 | eind = (struct elf_nds32_link_hash_entry *) ind; | |
3566 | ||
3567 | if (eind->dyn_relocs != NULL) | |
3568 | { | |
3569 | if (edir->dyn_relocs != NULL) | |
3570 | { | |
3571 | struct elf_nds32_dyn_relocs **pp; | |
3572 | struct elf_nds32_dyn_relocs *p; | |
3573 | ||
3574 | if (ind->root.type == bfd_link_hash_indirect) | |
3575 | abort (); | |
3576 | ||
3577 | /* Add reloc counts against the weak sym to the strong sym | |
3578 | list. Merge any entries against the same section. */ | |
3579 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
3580 | { | |
3581 | struct elf_nds32_dyn_relocs *q; | |
3582 | ||
3583 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3584 | if (q->sec == p->sec) | |
3585 | { | |
3586 | q->pc_count += p->pc_count; | |
3587 | q->count += p->count; | |
3588 | *pp = p->next; | |
3589 | break; | |
3590 | } | |
3591 | if (q == NULL) | |
3592 | pp = &p->next; | |
3593 | } | |
3594 | *pp = edir->dyn_relocs; | |
3595 | } | |
3596 | ||
3597 | edir->dyn_relocs = eind->dyn_relocs; | |
3598 | eind->dyn_relocs = NULL; | |
3599 | } | |
3600 | ||
3601 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3602 | } | |
3603 | \f | |
3604 | ||
3605 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3606 | regular object. The current definition is in some section of the | |
3607 | dynamic object, but we're not including those sections. We have to | |
3608 | change the definition to something the rest of the link can | |
3609 | understand. */ | |
3610 | ||
3611 | static bfd_boolean | |
3612 | nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
3613 | struct elf_link_hash_entry *h) | |
3614 | { | |
3615 | struct elf_nds32_link_hash_table *htab; | |
3616 | struct elf_nds32_link_hash_entry *eh; | |
3617 | struct elf_nds32_dyn_relocs *p; | |
3618 | bfd *dynobj; | |
3619 | asection *s; | |
3620 | unsigned int power_of_two; | |
3621 | ||
3622 | dynobj = elf_hash_table (info)->dynobj; | |
3623 | ||
3624 | /* Make sure we know what is going on here. */ | |
3625 | BFD_ASSERT (dynobj != NULL | |
3626 | && (h->needs_plt | |
3627 | || h->u.weakdef != NULL | |
3628 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); | |
3629 | ||
3630 | ||
3631 | /* If this is a function, put it in the procedure linkage table. We | |
3632 | will fill in the contents of the procedure linkage table later, | |
3633 | when we know the address of the .got section. */ | |
3634 | if (h->type == STT_FUNC || h->needs_plt) | |
3635 | { | |
0e1862bb | 3636 | if (!bfd_link_pic (info) |
35c08157 KLC |
3637 | && !h->def_dynamic |
3638 | && !h->ref_dynamic | |
3639 | && h->root.type != bfd_link_hash_undefweak | |
3640 | && h->root.type != bfd_link_hash_undefined) | |
3641 | { | |
3642 | /* This case can occur if we saw a PLT reloc in an input | |
3643 | file, but the symbol was never referred to by a dynamic | |
3644 | object. In such a case, we don't actually need to build | |
3645 | a procedure linkage table, and we can just do a PCREL | |
3646 | reloc instead. */ | |
3647 | h->plt.offset = (bfd_vma) - 1; | |
3648 | h->needs_plt = 0; | |
3649 | } | |
3650 | ||
3651 | return TRUE; | |
3652 | } | |
3653 | else | |
3654 | h->plt.offset = (bfd_vma) - 1; | |
3655 | ||
3656 | /* If this is a weak symbol, and there is a real definition, the | |
3657 | processor independent code will have arranged for us to see the | |
3658 | real definition first, and we can just use the same value. */ | |
3659 | if (h->u.weakdef != NULL) | |
3660 | { | |
3661 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
3662 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3663 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3664 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
3665 | return TRUE; | |
3666 | } | |
3667 | ||
3668 | /* This is a reference to a symbol defined by a dynamic object which | |
3669 | is not a function. */ | |
3670 | ||
3671 | /* If we are creating a shared library, we must presume that the | |
3672 | only references to the symbol are via the global offset table. | |
3673 | For such cases we need not do anything here; the relocations will | |
3674 | be handled correctly by relocate_section. */ | |
0e1862bb | 3675 | if (bfd_link_pic (info)) |
35c08157 KLC |
3676 | return TRUE; |
3677 | ||
3678 | /* If there are no references to this symbol that do not use the | |
3679 | GOT, we don't need to generate a copy reloc. */ | |
3680 | if (!h->non_got_ref) | |
3681 | return TRUE; | |
3682 | ||
3683 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
3684 | if (info->nocopyreloc) | |
3685 | { | |
3686 | h->non_got_ref = 0; | |
3687 | return TRUE; | |
3688 | } | |
3689 | ||
3690 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3691 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3692 | { | |
3693 | s = p->sec->output_section; | |
3694 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) | |
3695 | break; | |
3696 | } | |
3697 | ||
3698 | /* If we didn't find any dynamic relocs in sections which needs the | |
3699 | copy reloc, then we'll be keeping the dynamic relocs and avoiding | |
3700 | the copy reloc. */ | |
3701 | if (p == NULL) | |
3702 | { | |
3703 | h->non_got_ref = 0; | |
3704 | return TRUE; | |
3705 | } | |
3706 | ||
3707 | /* We must allocate the symbol in our .dynbss section, which will | |
3708 | become part of the .bss section of the executable. There will be | |
3709 | an entry for this symbol in the .dynsym section. The dynamic | |
3710 | object will contain position independent code, so all references | |
3711 | from the dynamic object to this symbol will go through the global | |
3712 | offset table. The dynamic linker will use the .dynsym entry to | |
3713 | determine the address it must put in the global offset table, so | |
3714 | both the dynamic object and the regular object will refer to the | |
3715 | same memory location for the variable. */ | |
3716 | ||
3717 | htab = nds32_elf_hash_table (info); | |
3718 | s = htab->sdynbss; | |
3719 | BFD_ASSERT (s != NULL); | |
3720 | ||
3721 | /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker | |
3722 | to copy the initial value out of the dynamic object and into the | |
3723 | runtime process image. We need to remember the offset into the | |
3724 | .rela.bss section we are going to use. */ | |
3725 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3726 | { | |
3727 | asection *srel; | |
3728 | ||
3729 | srel = htab->srelbss; | |
3730 | BFD_ASSERT (srel != NULL); | |
3731 | srel->size += sizeof (Elf32_External_Rela); | |
3732 | h->needs_copy = 1; | |
3733 | } | |
3734 | ||
3735 | /* We need to figure out the alignment required for this symbol. I | |
3736 | have no idea how ELF linkers handle this. */ | |
3737 | power_of_two = bfd_log2 (h->size); | |
3738 | if (power_of_two > 3) | |
3739 | power_of_two = 3; | |
3740 | ||
3741 | /* Apply the required alignment. */ | |
3742 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
3743 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
3744 | { | |
3745 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
3746 | return FALSE; | |
3747 | } | |
3748 | ||
3749 | /* Define the symbol as being at this point in the section. */ | |
3750 | h->root.u.def.section = s; | |
3751 | h->root.u.def.value = s->size; | |
3752 | ||
3753 | /* Increment the section size to make room for the symbol. */ | |
3754 | s->size += h->size; | |
3755 | ||
3756 | return TRUE; | |
3757 | } | |
3758 | ||
3759 | /* Allocate space in .plt, .got and associated reloc sections for | |
3760 | dynamic relocs. */ | |
3761 | ||
3762 | static bfd_boolean | |
3763 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3764 | { | |
3765 | struct bfd_link_info *info; | |
3766 | struct elf_nds32_link_hash_table *htab; | |
3767 | struct elf_nds32_link_hash_entry *eh; | |
3768 | struct elf_nds32_dyn_relocs *p; | |
3769 | ||
3770 | if (h->root.type == bfd_link_hash_indirect) | |
3771 | return TRUE; | |
3772 | ||
3773 | if (h->root.type == bfd_link_hash_warning) | |
3774 | /* When warning symbols are created, they **replace** the "real" | |
3775 | entry in the hash table, thus we never get to see the real | |
3776 | symbol in a hash traversal. So look at it now. */ | |
3777 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3778 | ||
3779 | info = (struct bfd_link_info *) inf; | |
3780 | htab = nds32_elf_hash_table (info); | |
3781 | ||
3782 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3783 | ||
3784 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
3785 | { | |
3786 | /* Make sure this symbol is output as a dynamic symbol. | |
3787 | Undefined weak syms won't yet be marked as dynamic. */ | |
3788 | if (h->dynindx == -1 && !h->forced_local) | |
3789 | { | |
3790 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3791 | return FALSE; | |
3792 | } | |
3793 | ||
0e1862bb | 3794 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
35c08157 KLC |
3795 | { |
3796 | asection *s = htab->splt; | |
3797 | ||
3798 | /* If this is the first .plt entry, make room for the special | |
3799 | first entry. */ | |
3800 | if (s->size == 0) | |
3801 | s->size += PLT_ENTRY_SIZE; | |
3802 | ||
3803 | h->plt.offset = s->size; | |
3804 | ||
3805 | /* If this symbol is not defined in a regular file, and we are | |
3806 | not generating a shared library, then set the symbol to this | |
3807 | location in the .plt. This is required to make function | |
3808 | pointers compare as equal between the normal executable and | |
3809 | the shared library. */ | |
0e1862bb | 3810 | if (!bfd_link_pic (info) && !h->def_regular) |
35c08157 KLC |
3811 | { |
3812 | h->root.u.def.section = s; | |
3813 | h->root.u.def.value = h->plt.offset; | |
3814 | } | |
3815 | ||
3816 | /* Make room for this entry. */ | |
3817 | s->size += PLT_ENTRY_SIZE; | |
3818 | ||
3819 | /* We also need to make an entry in the .got.plt section, which | |
3820 | will be placed in the .got section by the linker script. */ | |
3821 | htab->sgotplt->size += 4; | |
3822 | ||
3823 | /* We also need to make an entry in the .rel.plt section. */ | |
3824 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
3825 | } | |
3826 | else | |
3827 | { | |
3828 | h->plt.offset = (bfd_vma) - 1; | |
3829 | h->needs_plt = 0; | |
3830 | } | |
3831 | } | |
3832 | else | |
3833 | { | |
3834 | h->plt.offset = (bfd_vma) - 1; | |
3835 | h->needs_plt = 0; | |
3836 | } | |
3837 | ||
3838 | if (h->got.refcount > 0) | |
3839 | { | |
3840 | asection *s; | |
3841 | bfd_boolean dyn; | |
1c8f6a4d | 3842 | int tls_type = elf32_nds32_hash_entry (h)->tls_type; |
35c08157 KLC |
3843 | |
3844 | /* Make sure this symbol is output as a dynamic symbol. | |
3845 | Undefined weak syms won't yet be marked as dynamic. */ | |
3846 | if (h->dynindx == -1 && !h->forced_local) | |
3847 | { | |
3848 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3849 | return FALSE; | |
3850 | } | |
3851 | ||
3852 | s = htab->sgot; | |
35c08157 | 3853 | h->got.offset = s->size; |
1c8f6a4d KLC |
3854 | |
3855 | if (tls_type == GOT_UNKNOWN) | |
3856 | abort (); | |
3857 | else if (tls_type == GOT_NORMAL | |
3858 | || tls_type == GOT_TLS_IE) | |
3859 | /* Need a GOT slot. */ | |
3860 | s->size += 4; | |
3861 | ||
35c08157 | 3862 | dyn = htab->root.dynamic_sections_created; |
0e1862bb | 3863 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) |
35c08157 KLC |
3864 | htab->srelgot->size += sizeof (Elf32_External_Rela); |
3865 | } | |
3866 | else | |
3867 | h->got.offset = (bfd_vma) - 1; | |
3868 | ||
3869 | if (eh->dyn_relocs == NULL) | |
3870 | return TRUE; | |
3871 | ||
3872 | /* In the shared -Bsymbolic case, discard space allocated for | |
3873 | dynamic pc-relative relocs against symbols which turn out to be | |
3874 | defined in regular objects. For the normal shared case, discard | |
3875 | space for pc-relative relocs that have become local due to symbol | |
3876 | visibility changes. */ | |
3877 | ||
0e1862bb | 3878 | if (bfd_link_pic (info)) |
35c08157 KLC |
3879 | { |
3880 | if (h->def_regular && (h->forced_local || info->symbolic)) | |
3881 | { | |
3882 | struct elf_nds32_dyn_relocs **pp; | |
3883 | ||
3884 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
3885 | { | |
3886 | p->count -= p->pc_count; | |
3887 | p->pc_count = 0; | |
3888 | if (p->count == 0) | |
3889 | *pp = p->next; | |
3890 | else | |
3891 | pp = &p->next; | |
3892 | } | |
3893 | } | |
3894 | } | |
3895 | else | |
3896 | { | |
3897 | /* For the non-shared case, discard space for relocs against | |
3898 | symbols which turn out to need copy relocs or are not dynamic. */ | |
3899 | ||
3900 | if (!h->non_got_ref | |
3901 | && ((h->def_dynamic | |
3902 | && !h->def_regular) | |
3903 | || (htab->root.dynamic_sections_created | |
3904 | && (h->root.type == bfd_link_hash_undefweak | |
3905 | || h->root.type == bfd_link_hash_undefined)))) | |
3906 | { | |
3907 | /* Make sure this symbol is output as a dynamic symbol. | |
3908 | Undefined weak syms won't yet be marked as dynamic. */ | |
3909 | if (h->dynindx == -1 && !h->forced_local) | |
3910 | { | |
3911 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3912 | return FALSE; | |
3913 | } | |
3914 | ||
3915 | /* If that succeeded, we know we'll be keeping all the | |
3916 | relocs. */ | |
3917 | if (h->dynindx != -1) | |
3918 | goto keep; | |
3919 | } | |
3920 | ||
3921 | eh->dyn_relocs = NULL; | |
3922 | ||
3923 | keep:; | |
3924 | } | |
3925 | ||
3926 | /* Finally, allocate space. */ | |
3927 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3928 | { | |
3929 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3930 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
3931 | } | |
3932 | ||
3933 | return TRUE; | |
3934 | } | |
3935 | ||
3936 | /* Find any dynamic relocs that apply to read-only sections. */ | |
3937 | ||
3938 | static bfd_boolean | |
3939 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3940 | { | |
3941 | struct elf_nds32_link_hash_entry *eh; | |
3942 | struct elf_nds32_dyn_relocs *p; | |
3943 | ||
3944 | if (h->root.type == bfd_link_hash_warning) | |
3945 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3946 | ||
3947 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3948 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3949 | { | |
3950 | asection *s = p->sec->output_section; | |
3951 | ||
3952 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3953 | { | |
3954 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3955 | ||
3956 | info->flags |= DF_TEXTREL; | |
3957 | ||
3958 | /* Not an error, just cut short the traversal. */ | |
3959 | return FALSE; | |
3960 | } | |
3961 | } | |
3962 | return TRUE; | |
3963 | } | |
3964 | ||
3965 | /* Set the sizes of the dynamic sections. */ | |
3966 | ||
3967 | static bfd_boolean | |
3968 | nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3969 | struct bfd_link_info *info) | |
3970 | { | |
3971 | struct elf_nds32_link_hash_table *htab; | |
3972 | bfd *dynobj; | |
3973 | asection *s; | |
3974 | bfd_boolean relocs; | |
3975 | bfd *ibfd; | |
3976 | ||
3977 | htab = nds32_elf_hash_table (info); | |
3978 | dynobj = htab->root.dynobj; | |
3979 | BFD_ASSERT (dynobj != NULL); | |
3980 | ||
3981 | if (htab->root.dynamic_sections_created) | |
3982 | { | |
3983 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 3984 | if (!bfd_link_pic (info) && !info->nointerp) |
35c08157 KLC |
3985 | { |
3986 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3987 | BFD_ASSERT (s != NULL); | |
3988 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3989 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3990 | } | |
3991 | } | |
3992 | ||
3993 | /* Set up .got offsets for local syms, and space for local dynamic | |
3994 | relocs. */ | |
c72f2fb2 | 3995 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
35c08157 KLC |
3996 | { |
3997 | bfd_signed_vma *local_got; | |
3998 | bfd_signed_vma *end_local_got; | |
3999 | bfd_size_type locsymcount; | |
4000 | Elf_Internal_Shdr *symtab_hdr; | |
4001 | asection *srel; | |
4002 | ||
4003 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
4004 | continue; | |
4005 | ||
4006 | for (s = ibfd->sections; s != NULL; s = s->next) | |
4007 | { | |
4008 | struct elf_nds32_dyn_relocs *p; | |
4009 | ||
4010 | for (p = ((struct elf_nds32_dyn_relocs *) | |
4011 | elf_section_data (s)->local_dynrel); | |
4012 | p != NULL; p = p->next) | |
4013 | { | |
4014 | if (!bfd_is_abs_section (p->sec) | |
4015 | && bfd_is_abs_section (p->sec->output_section)) | |
4016 | { | |
4017 | /* Input section has been discarded, either because | |
4018 | it is a copy of a linkonce section or due to | |
4019 | linker script /DISCARD/, so we'll be discarding | |
4020 | the relocs too. */ | |
4021 | } | |
4022 | else if (p->count != 0) | |
4023 | { | |
4024 | srel = elf_section_data (p->sec)->sreloc; | |
4025 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
4026 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
4027 | info->flags |= DF_TEXTREL; | |
4028 | } | |
4029 | } | |
4030 | } | |
4031 | ||
4032 | local_got = elf_local_got_refcounts (ibfd); | |
4033 | if (!local_got) | |
4034 | continue; | |
4035 | ||
4036 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4037 | locsymcount = symtab_hdr->sh_info; | |
4038 | end_local_got = local_got + locsymcount; | |
4039 | s = htab->sgot; | |
4040 | srel = htab->srelgot; | |
4041 | for (; local_got < end_local_got; ++local_got) | |
4042 | { | |
4043 | if (*local_got > 0) | |
4044 | { | |
4045 | *local_got = s->size; | |
4046 | s->size += 4; | |
0e1862bb | 4047 | if (bfd_link_pic (info)) |
35c08157 KLC |
4048 | srel->size += sizeof (Elf32_External_Rela); |
4049 | } | |
4050 | else | |
4051 | *local_got = (bfd_vma) - 1; | |
4052 | } | |
4053 | } | |
4054 | ||
4055 | /* Allocate global sym .plt and .got entries, and space for global | |
4056 | sym dynamic relocs. */ | |
4057 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info); | |
4058 | ||
4059 | /* We now have determined the sizes of the various dynamic sections. | |
4060 | Allocate memory for them. */ | |
4061 | relocs = FALSE; | |
4062 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4063 | { | |
4064 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4065 | continue; | |
4066 | ||
4067 | if (s == htab->splt) | |
4068 | { | |
4069 | /* Strip this section if we don't need it; see the | |
4070 | comment below. */ | |
4071 | } | |
4072 | else if (s == htab->sgot) | |
4073 | { | |
4074 | got_size += s->size; | |
4075 | } | |
4076 | else if (s == htab->sgotplt) | |
4077 | { | |
4078 | got_size += s->size; | |
4079 | } | |
4080 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
4081 | { | |
4082 | if (s->size != 0 && s != htab->srelplt) | |
4083 | relocs = TRUE; | |
4084 | ||
4085 | /* We use the reloc_count field as a counter if we need | |
4086 | to copy relocs into the output file. */ | |
4087 | s->reloc_count = 0; | |
4088 | } | |
4089 | else | |
4090 | { | |
4091 | /* It's not one of our sections, so don't allocate space. */ | |
4092 | continue; | |
4093 | } | |
4094 | ||
4095 | if (s->size == 0) | |
4096 | { | |
4097 | /* If we don't need this section, strip it from the | |
4098 | output file. This is mostly to handle .rela.bss and | |
4099 | .rela.plt. We must create both sections in | |
4100 | create_dynamic_sections, because they must be created | |
4101 | before the linker maps input sections to output | |
4102 | sections. The linker does that before | |
4103 | adjust_dynamic_symbol is called, and it is that | |
4104 | function which decides whether anything needs to go | |
4105 | into these sections. */ | |
4106 | s->flags |= SEC_EXCLUDE; | |
4107 | continue; | |
4108 | } | |
4109 | ||
4110 | /* Allocate memory for the section contents. We use bfd_zalloc | |
4111 | here in case unused entries are not reclaimed before the | |
4112 | section's contents are written out. This should not happen, | |
4113 | but this way if it does, we get a R_NDS32_NONE reloc instead | |
4114 | of garbage. */ | |
4115 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
4116 | if (s->contents == NULL) | |
4117 | return FALSE; | |
4118 | } | |
4119 | ||
4120 | ||
4121 | if (htab->root.dynamic_sections_created) | |
4122 | { | |
4123 | /* Add some entries to the .dynamic section. We fill in the | |
4124 | values later, in nds32_elf_finish_dynamic_sections, but we | |
4125 | must add the entries now so that we get the correct size for | |
4126 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4127 | dynamic linker and used by the debugger. */ | |
4128 | #define add_dynamic_entry(TAG, VAL) \ | |
4129 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
4130 | ||
0e1862bb | 4131 | if (!bfd_link_pic (info)) |
35c08157 KLC |
4132 | { |
4133 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
4134 | return FALSE; | |
4135 | } | |
4136 | ||
4137 | if (htab->splt->size != 0) | |
4138 | { | |
4139 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
4140 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4141 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4142 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4143 | return FALSE; | |
4144 | } | |
4145 | ||
4146 | if (relocs) | |
4147 | { | |
4148 | if (!add_dynamic_entry (DT_RELA, 0) | |
4149 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4150 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4151 | return FALSE; | |
4152 | ||
4153 | /* If any dynamic relocs apply to a read-only section, | |
4154 | then we need a DT_TEXTREL entry. */ | |
4155 | if ((info->flags & DF_TEXTREL) == 0) | |
4156 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, | |
4157 | (void *) info); | |
4158 | ||
4159 | if ((info->flags & DF_TEXTREL) != 0) | |
4160 | { | |
4161 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4162 | return FALSE; | |
4163 | } | |
4164 | } | |
4165 | } | |
4166 | #undef add_dynamic_entry | |
4167 | ||
4168 | return TRUE; | |
4169 | } | |
4170 | ||
4171 | static bfd_reloc_status_type | |
4172 | nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd, | |
4173 | bfd_vma relocation, bfd_byte *location) | |
4174 | { | |
4175 | int size; | |
4176 | bfd_vma x = 0; | |
4177 | bfd_reloc_status_type flag; | |
4178 | unsigned int rightshift = howto->rightshift; | |
4179 | unsigned int bitpos = howto->bitpos; | |
4180 | ||
4181 | /* If the size is negative, negate RELOCATION. This isn't very | |
4182 | general. */ | |
4183 | if (howto->size < 0) | |
4184 | relocation = -relocation; | |
4185 | ||
4186 | /* Get the value we are going to relocate. */ | |
4187 | size = bfd_get_reloc_size (howto); | |
4188 | switch (size) | |
4189 | { | |
4190 | default: | |
35c08157 KLC |
4191 | abort (); |
4192 | break; | |
6346d5ca AM |
4193 | case 0: |
4194 | return bfd_reloc_ok; | |
35c08157 KLC |
4195 | case 2: |
4196 | x = bfd_getb16 (location); | |
4197 | break; | |
4198 | case 4: | |
4199 | x = bfd_getb32 (location); | |
4200 | break; | |
4201 | } | |
4202 | ||
4203 | /* Check for overflow. FIXME: We may drop bits during the addition | |
4204 | which we don't check for. We must either check at every single | |
4205 | operation, which would be tedious, or we must do the computations | |
4206 | in a type larger than bfd_vma, which would be inefficient. */ | |
4207 | flag = bfd_reloc_ok; | |
4208 | if (howto->complain_on_overflow != complain_overflow_dont) | |
4209 | { | |
4210 | bfd_vma addrmask, fieldmask, signmask, ss; | |
4211 | bfd_vma a, b, sum; | |
4212 | ||
4213 | /* Get the values to be added together. For signed and unsigned | |
4214 | relocations, we assume that all values should be truncated to | |
4215 | the size of an address. For bitfields, all the bits matter. | |
4216 | See also bfd_check_overflow. */ | |
4217 | fieldmask = N_ONES (howto->bitsize); | |
4218 | signmask = ~fieldmask; | |
4219 | addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask; | |
4220 | a = (relocation & addrmask) >> rightshift; | |
4221 | b = (x & howto->src_mask & addrmask) >> bitpos; | |
4222 | ||
4223 | switch (howto->complain_on_overflow) | |
4224 | { | |
4225 | case complain_overflow_signed: | |
4226 | /* If any sign bits are set, all sign bits must be set. | |
4227 | That is, A must be a valid negative address after | |
4228 | shifting. */ | |
4229 | signmask = ~(fieldmask >> 1); | |
4230 | /* Fall through. */ | |
4231 | ||
4232 | case complain_overflow_bitfield: | |
4233 | /* Much like the signed check, but for a field one bit | |
4234 | wider. We allow a bitfield to represent numbers in the | |
4235 | range -2**n to 2**n-1, where n is the number of bits in the | |
4236 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc | |
4237 | can't overflow, which is exactly what we want. */ | |
4238 | ss = a & signmask; | |
4239 | if (ss != 0 && ss != ((addrmask >> rightshift) & signmask)) | |
4240 | flag = bfd_reloc_overflow; | |
4241 | ||
4242 | /* We only need this next bit of code if the sign bit of B | |
4243 | is below the sign bit of A. This would only happen if | |
4244 | SRC_MASK had fewer bits than BITSIZE. Note that if | |
4245 | SRC_MASK has more bits than BITSIZE, we can get into | |
4246 | trouble; we would need to verify that B is in range, as | |
4247 | we do for A above. */ | |
4248 | ss = ((~howto->src_mask) >> 1) & howto->src_mask; | |
4249 | ss >>= bitpos; | |
4250 | ||
4251 | /* Set all the bits above the sign bit. */ | |
4252 | b = (b ^ ss) - ss; | |
4253 | ||
4254 | /* Now we can do the addition. */ | |
4255 | sum = a + b; | |
4256 | ||
4257 | /* See if the result has the correct sign. Bits above the | |
4258 | sign bit are junk now; ignore them. If the sum is | |
4259 | positive, make sure we did not have all negative inputs; | |
4260 | if the sum is negative, make sure we did not have all | |
4261 | positive inputs. The test below looks only at the sign | |
4262 | bits, and it really just | |
4263 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) | |
4264 | ||
4265 | We mask with addrmask here to explicitly allow an address | |
4266 | wrap-around. The Linux kernel relies on it, and it is | |
4267 | the only way to write assembler code which can run when | |
4268 | loaded at a location 0x80000000 away from the location at | |
4269 | which it is linked. */ | |
4270 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) | |
4271 | flag = bfd_reloc_overflow; | |
4272 | ||
4273 | break; | |
4274 | ||
4275 | case complain_overflow_unsigned: | |
4276 | /* Checking for an unsigned overflow is relatively easy: | |
4277 | trim the addresses and add, and trim the result as well. | |
4278 | Overflow is normally indicated when the result does not | |
4279 | fit in the field. However, we also need to consider the | |
4280 | case when, e.g., fieldmask is 0x7fffffff or smaller, an | |
4281 | input is 0x80000000, and bfd_vma is only 32 bits; then we | |
4282 | will get sum == 0, but there is an overflow, since the | |
4283 | inputs did not fit in the field. Instead of doing a | |
4284 | separate test, we can check for this by or-ing in the | |
4285 | operands when testing for the sum overflowing its final | |
4286 | field. */ | |
4287 | sum = (a + b) & addrmask; | |
4288 | if ((a | b | sum) & signmask) | |
4289 | flag = bfd_reloc_overflow; | |
4290 | break; | |
4291 | ||
4292 | default: | |
4293 | abort (); | |
4294 | } | |
4295 | } | |
4296 | ||
4297 | /* Put RELOCATION in the right bits. */ | |
4298 | relocation >>= (bfd_vma) rightshift; | |
4299 | relocation <<= (bfd_vma) bitpos; | |
4300 | ||
4301 | /* Add RELOCATION to the right bits of X. */ | |
4302 | /* FIXME : 090616 | |
4303 | Because the relaxation may generate duplicate relocation at one address, | |
4304 | an addition to immediate in the instruction may cause the relocation added | |
4305 | several times. | |
4306 | This bug should be fixed in assembler, but a check is also needed here. */ | |
4307 | if (howto->partial_inplace) | |
4308 | x = ((x & ~howto->dst_mask) | |
4309 | | (((x & howto->src_mask) + relocation) & howto->dst_mask)); | |
4310 | else | |
4311 | x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask)); | |
4312 | ||
4313 | ||
4314 | /* Put the relocated value back in the object file. */ | |
4315 | switch (size) | |
4316 | { | |
4317 | default: | |
4318 | case 0: | |
4319 | case 1: | |
4320 | case 8: | |
4321 | abort (); | |
4322 | break; | |
4323 | case 2: | |
4324 | bfd_putb16 (x, location); | |
4325 | break; | |
4326 | case 4: | |
4327 | bfd_putb32 (x, location); | |
4328 | break; | |
4329 | } | |
4330 | ||
4331 | return flag; | |
4332 | } | |
4333 | ||
4334 | static bfd_reloc_status_type | |
4335 | nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, | |
4336 | asection *input_section, bfd_byte *contents, | |
4337 | bfd_vma address, bfd_vma value, bfd_vma addend) | |
4338 | { | |
4339 | bfd_vma relocation; | |
4340 | ||
4341 | /* Sanity check the address. */ | |
4342 | if (address > bfd_get_section_limit (input_bfd, input_section)) | |
4343 | return bfd_reloc_outofrange; | |
4344 | ||
4345 | /* This function assumes that we are dealing with a basic relocation | |
4346 | against a symbol. We want to compute the value of the symbol to | |
4347 | relocate to. This is just VALUE, the value of the symbol, plus | |
4348 | ADDEND, any addend associated with the reloc. */ | |
4349 | relocation = value + addend; | |
4350 | ||
4351 | /* If the relocation is PC relative, we want to set RELOCATION to | |
4352 | the distance between the symbol (currently in RELOCATION) and the | |
4353 | location we are relocating. Some targets (e.g., i386-aout) | |
4354 | arrange for the contents of the section to be the negative of the | |
4355 | offset of the location within the section; for such targets | |
4356 | pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF) | |
4357 | simply leave the contents of the section as zero; for such | |
4358 | targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not | |
4359 | need to subtract out the offset of the location within the | |
4360 | section (which is just ADDRESS). */ | |
4361 | if (howto->pc_relative) | |
4362 | { | |
4363 | relocation -= (input_section->output_section->vma | |
4364 | + input_section->output_offset); | |
4365 | if (howto->pcrel_offset) | |
4366 | relocation -= address; | |
4367 | } | |
4368 | ||
4369 | return nds32_relocate_contents (howto, input_bfd, relocation, | |
4370 | contents + address); | |
4371 | } | |
4372 | ||
4373 | static bfd_boolean | |
4374 | nds32_elf_output_symbol_hook (struct bfd_link_info *info, | |
4375 | const char *name, | |
4376 | Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED, | |
4377 | asection *input_sec, | |
4378 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
4379 | { | |
4380 | const char *source; | |
4381 | FILE *sym_ld_script = NULL; | |
4382 | struct elf_nds32_link_hash_table *table; | |
4383 | ||
4384 | table = nds32_elf_hash_table (info); | |
4385 | sym_ld_script = table->sym_ld_script; | |
4386 | if (!sym_ld_script) | |
4387 | return TRUE; | |
4388 | ||
4389 | if (!h || !name || *name == '\0') | |
4390 | return TRUE; | |
4391 | ||
4392 | if (input_sec->flags & SEC_EXCLUDE) | |
4393 | return TRUE; | |
4394 | ||
4395 | if (!check_start_export_sym) | |
4396 | { | |
4397 | fprintf (sym_ld_script, "SECTIONS\n{\n"); | |
4398 | check_start_export_sym = 1; | |
4399 | } | |
4400 | ||
4401 | if (h->root.type == bfd_link_hash_defined | |
4402 | || h->root.type == bfd_link_hash_defweak) | |
4403 | { | |
4404 | if (!h->root.u.def.section->output_section) | |
4405 | return TRUE; | |
4406 | ||
4407 | if (bfd_is_const_section (input_sec)) | |
4408 | source = input_sec->name; | |
4409 | else | |
4410 | source = input_sec->owner->filename; | |
4411 | ||
4412 | fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n", | |
4413 | h->root.root.string, | |
4414 | (long) (h->root.u.def.value | |
4415 | + h->root.u.def.section->output_section->vma | |
4416 | + h->root.u.def.section->output_offset), source); | |
4417 | } | |
4418 | ||
4419 | return TRUE; | |
4420 | } | |
4421 | ||
4422 | /* Relocate an NDS32/D ELF section. | |
4423 | There is some attempt to make this function usable for many architectures, | |
4424 | both for RELA and REL type relocs, if only to serve as a learning tool. | |
4425 | ||
4426 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
4427 | to handle the relocations for a section. | |
4428 | ||
4429 | The relocs are always passed as Rela structures; if the section | |
4430 | actually uses Rel structures, the r_addend field will always be | |
4431 | zero. | |
4432 | ||
4433 | This function is responsible for adjust the section contents as | |
4434 | necessary, and (if using Rela relocs and generating a | |
4435 | relocatable output file) adjusting the reloc addend as | |
4436 | necessary. | |
4437 | ||
4438 | This function does not have to worry about setting the reloc | |
4439 | address or the reloc symbol index. | |
4440 | ||
4441 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4442 | ||
4443 | LOCAL_SECTIONS is an array giving the section in the input file | |
4444 | corresponding to the st_shndx field of each local symbol. | |
4445 | ||
4446 | The global hash table entry for the global symbols can be found | |
4447 | via elf_sym_hashes (input_bfd). | |
4448 | ||
4449 | When generating relocatable output, this function must handle | |
4450 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
4451 | going to be the section symbol corresponding to the output | |
4452 | section, which means that the addend must be adjusted | |
4453 | accordingly. */ | |
4454 | ||
1c8f6a4d KLC |
4455 | static bfd_vma |
4456 | dtpoff_base (struct bfd_link_info *info) | |
4457 | { | |
4458 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4459 | if (elf_hash_table (info)->tls_sec == NULL) | |
4460 | return 0; | |
4461 | return elf_hash_table (info)->tls_sec->vma; | |
4462 | } | |
4463 | ||
35c08157 KLC |
4464 | static bfd_boolean |
4465 | nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, | |
4466 | struct bfd_link_info * info, | |
4467 | bfd * input_bfd, | |
4468 | asection * input_section, | |
4469 | bfd_byte * contents, | |
4470 | Elf_Internal_Rela * relocs, | |
4471 | Elf_Internal_Sym * local_syms, | |
4472 | asection ** local_sections) | |
4473 | { | |
4474 | Elf_Internal_Shdr *symtab_hdr; | |
4475 | struct elf_link_hash_entry **sym_hashes; | |
4476 | Elf_Internal_Rela *rel, *relend; | |
4477 | bfd_boolean ret = TRUE; /* Assume success. */ | |
4478 | int align = 0; | |
4479 | bfd_reloc_status_type r; | |
4480 | const char *errmsg = NULL; | |
4481 | bfd_vma gp; | |
4482 | struct elf_nds32_link_hash_table *htab; | |
4483 | bfd *dynobj; | |
4484 | bfd_vma *local_got_offsets; | |
4485 | asection *sgot, *splt, *sreloc; | |
4486 | bfd_vma high_address; | |
4487 | struct elf_nds32_link_hash_table *table; | |
4488 | int eliminate_gc_relocs; | |
4489 | bfd_vma fpbase_addr; | |
4490 | ||
4491 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4492 | sym_hashes = elf_sym_hashes (input_bfd); | |
4493 | htab = nds32_elf_hash_table (info); | |
4494 | high_address = bfd_get_section_limit (input_bfd, input_section); | |
4495 | ||
4496 | dynobj = htab->root.dynobj; | |
4497 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
4498 | ||
4499 | sgot = htab->sgot; | |
4500 | splt = htab->splt; | |
4501 | sreloc = NULL; | |
4502 | ||
4503 | rel = relocs; | |
4504 | relend = relocs + input_section->reloc_count; | |
4505 | ||
4506 | table = nds32_elf_hash_table (info); | |
4507 | eliminate_gc_relocs = table->eliminate_gc_relocs; | |
4508 | /* By this time, we can adjust the value of _SDA_BASE_. */ | |
0e1862bb | 4509 | if ((!bfd_link_relocatable (info))) |
35c08157 KLC |
4510 | { |
4511 | is_SDA_BASE_set = 1; | |
4512 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE); | |
4513 | if (r != bfd_reloc_ok) | |
4514 | return FALSE; | |
4515 | } | |
4516 | ||
0c4bd9d9 KLC |
4517 | if (is_ITB_BASE_set == 0) |
4518 | { | |
4519 | /* Set the _ITB_BASE_. */ | |
4520 | if (!nds32_elf_ex9_itb_base (info)) | |
4521 | { | |
4522 | (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), | |
4523 | output_bfd); | |
4524 | bfd_set_error (bfd_error_bad_value); | |
4525 | } | |
4526 | } | |
4527 | ||
1c8f6a4d KLC |
4528 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) |
4529 | if (!nds32_elf_ifc_reloc ()) | |
4530 | (*_bfd_error_handler) (_("error: IFC relocation error.")); | |
4531 | ||
4532 | /* Relocation for .ex9.itable. */ | |
4533 | if (table->target_optimize & NDS32_RELAX_EX9_ON | |
4534 | || (table->ex9_import_file && table->update_ex9_table)) | |
4535 | nds32_elf_ex9_reloc_jmp (info); | |
4536 | ||
35c08157 KLC |
4537 | /* Use gp as fp to prevent truncated fit. Because in relaxation time |
4538 | the fp value is set as gp, and it has be reverted for instruction | |
4539 | setting fp. */ | |
4540 | fpbase_addr = elf_gp (output_bfd); | |
4541 | ||
4542 | for (rel = relocs; rel < relend; rel++) | |
4543 | { | |
4544 | enum elf_nds32_reloc_type r_type; | |
4545 | reloc_howto_type *howto = NULL; | |
4546 | unsigned long r_symndx; | |
4547 | struct elf_link_hash_entry *h = NULL; | |
4548 | Elf_Internal_Sym *sym = NULL; | |
4549 | asection *sec; | |
4550 | bfd_vma relocation; | |
4551 | ||
4552 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to | |
4553 | ensure it's zero (we use REL relocs, not RELA). Therefore this | |
4554 | should be assigning zero to `addend', but for clarity we use | |
4555 | `r_addend'. */ | |
4556 | ||
4557 | bfd_vma addend = rel->r_addend; | |
4558 | bfd_vma offset = rel->r_offset; | |
4559 | ||
4560 | r_type = ELF32_R_TYPE (rel->r_info); | |
4561 | if (r_type >= R_NDS32_max) | |
4562 | { | |
4563 | (*_bfd_error_handler) (_("%B: error: unknown relocation type %d."), | |
4564 | input_bfd, r_type); | |
4565 | bfd_set_error (bfd_error_bad_value); | |
4566 | ret = FALSE; | |
4567 | continue; | |
4568 | } | |
4569 | ||
4570 | if (r_type == R_NDS32_GNU_VTENTRY | |
4571 | || r_type == R_NDS32_GNU_VTINHERIT | |
4572 | || r_type == R_NDS32_NONE | |
4573 | || r_type == R_NDS32_RELA_GNU_VTENTRY | |
4574 | || r_type == R_NDS32_RELA_GNU_VTINHERIT | |
4575 | || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA) | |
4576 | || r_type == R_NDS32_DATA | |
1c8f6a4d | 4577 | || r_type == R_NDS32_TRAN |
0c4bd9d9 | 4578 | || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7)) |
35c08157 KLC |
4579 | continue; |
4580 | ||
0c4bd9d9 KLC |
4581 | /* If we enter the fp-as-gp region. Resolve the address |
4582 | of best fp-base. */ | |
35c08157 KLC |
4583 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
4584 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4585 | { | |
4586 | int dist; | |
4587 | ||
4588 | /* Distance to relocation of best fp-base is encoded in R_SYM. */ | |
4589 | dist = rel->r_addend >> 16; | |
4590 | fpbase_addr = calculate_memory_address (input_bfd, rel + dist, | |
4591 | local_syms, symtab_hdr); | |
4592 | } | |
4593 | else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END | |
4594 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4595 | { | |
4596 | fpbase_addr = elf_gp (output_bfd); | |
4597 | } | |
4598 | ||
4599 | if (((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4600 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
0e1862bb | 4601 | || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info)) |
35c08157 KLC |
4602 | continue; |
4603 | ||
4604 | howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); | |
4605 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4606 | ||
4607 | /* This is a final link. */ | |
4608 | sym = NULL; | |
4609 | sec = NULL; | |
4610 | h = NULL; | |
4611 | ||
4612 | if (r_symndx < symtab_hdr->sh_info) | |
4613 | { | |
4614 | /* Local symbol. */ | |
4615 | sym = local_syms + r_symndx; | |
4616 | sec = local_sections[r_symndx]; | |
4617 | ||
4618 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
4619 | addend = rel->r_addend; | |
4620 | } | |
4621 | else | |
4622 | { | |
4623 | /* External symbol. */ | |
4624 | bfd_boolean warned, ignored, unresolved_reloc; | |
4625 | int symndx = r_symndx - symtab_hdr->sh_info; | |
4626 | ||
4627 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4628 | r_symndx, symtab_hdr, sym_hashes, h, sec, | |
4629 | relocation, unresolved_reloc, warned, | |
4630 | ignored); | |
4631 | ||
4632 | /* la $fp, _FP_BASE_ is per-function (region). | |
4633 | Handle it specially. */ | |
4634 | switch ((int) r_type) | |
4635 | { | |
4636 | case R_NDS32_SDA19S0_RELA: | |
4637 | case R_NDS32_SDA15S0_RELA: | |
4638 | case R_NDS32_20_RELA: | |
4639 | if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string, | |
4640 | FP_BASE_NAME) == 0) | |
4641 | { | |
4642 | relocation = fpbase_addr; | |
4643 | break; | |
4644 | } | |
4645 | } | |
4646 | ||
4647 | } | |
4648 | ||
0e1862bb | 4649 | if (bfd_link_relocatable (info)) |
35c08157 KLC |
4650 | { |
4651 | /* This is a relocatable link. We don't have to change | |
4652 | anything, unless the reloc is against a section symbol, | |
4653 | in which case we have to adjust according to where the | |
4654 | section symbol winds up in the output section. */ | |
4655 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4656 | rel->r_addend += sec->output_offset + sym->st_value; | |
4657 | ||
4658 | continue; | |
4659 | } | |
4660 | ||
4661 | /* Sanity check the address. */ | |
4662 | if (offset > high_address) | |
4663 | { | |
4664 | r = bfd_reloc_outofrange; | |
4665 | goto check_reloc; | |
4666 | } | |
4667 | ||
4668 | if ((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4669 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
4670 | || r_type >= R_NDS32_RELAX_ENTRY) | |
4671 | continue; | |
4672 | ||
4673 | switch ((int) r_type) | |
4674 | { | |
4675 | case R_NDS32_GOTOFF: | |
4676 | /* Relocation is relative to the start of the global offset | |
4677 | table (for ld24 rx, #uimm24), e.g. access at label+addend | |
4678 | ||
4679 | ld24 rx. #label@GOTOFF + addend | |
4680 | sub rx, r12. */ | |
4681 | case R_NDS32_GOTOFF_HI20: | |
4682 | case R_NDS32_GOTOFF_LO12: | |
4683 | case R_NDS32_GOTOFF_LO15: | |
4684 | case R_NDS32_GOTOFF_LO19: | |
4685 | BFD_ASSERT (sgot != NULL); | |
4686 | ||
4687 | relocation -= elf_gp (output_bfd); | |
4688 | break; | |
4689 | ||
4690 | case R_NDS32_9_PLTREL: | |
4691 | case R_NDS32_25_PLTREL: | |
4692 | /* Relocation is to the entry for this symbol in the | |
4693 | procedure linkage table. */ | |
4694 | ||
4695 | /* The native assembler will generate a 25_PLTREL reloc | |
4696 | for a local symbol if you assemble a call from one | |
4697 | section to another when using -K pic. */ | |
4698 | if (h == NULL) | |
4699 | break; | |
4700 | ||
4701 | if (h->forced_local) | |
4702 | break; | |
4703 | ||
4704 | /* We didn't make a PLT entry for this symbol. This | |
4705 | happens when statically linking PIC code, or when | |
4706 | using -Bsymbolic. */ | |
4707 | if (h->plt.offset == (bfd_vma) - 1) | |
4708 | break; | |
4709 | ||
4710 | relocation = (splt->output_section->vma | |
4711 | + splt->output_offset + h->plt.offset); | |
4712 | break; | |
4713 | ||
4714 | case R_NDS32_PLT_GOTREL_HI20: | |
4715 | case R_NDS32_PLT_GOTREL_LO12: | |
4716 | case R_NDS32_PLT_GOTREL_LO15: | |
4717 | case R_NDS32_PLT_GOTREL_LO19: | |
4718 | case R_NDS32_PLT_GOTREL_LO20: | |
4719 | if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1) | |
4720 | { | |
4721 | /* We didn't make a PLT entry for this symbol. This | |
4722 | happens when statically linking PIC code, or when | |
4723 | using -Bsymbolic. */ | |
4724 | relocation -= elf_gp (output_bfd); | |
4725 | break; | |
4726 | } | |
4727 | ||
4728 | relocation = (splt->output_section->vma | |
4729 | + splt->output_offset + h->plt.offset); | |
4730 | ||
4731 | relocation -= elf_gp (output_bfd); | |
4732 | break; | |
4733 | ||
4734 | case R_NDS32_PLTREL_HI20: | |
4735 | case R_NDS32_PLTREL_LO12: | |
4736 | ||
4737 | /* Relocation is to the entry for this symbol in the | |
4738 | procedure linkage table. */ | |
4739 | ||
4740 | /* The native assembler will generate a 25_PLTREL reloc | |
4741 | for a local symbol if you assemble a call from one | |
4742 | section to another when using -K pic. */ | |
4743 | if (h == NULL) | |
4744 | break; | |
4745 | ||
4746 | if (h->forced_local) | |
4747 | break; | |
4748 | ||
4749 | if (h->plt.offset == (bfd_vma) - 1) | |
4750 | /* We didn't make a PLT entry for this symbol. This | |
4751 | happens when statically linking PIC code, or when | |
4752 | using -Bsymbolic. */ | |
4753 | break; | |
4754 | ||
4755 | if (splt == NULL) | |
4756 | break; | |
4757 | ||
4758 | relocation = (splt->output_section->vma | |
4759 | + splt->output_offset | |
4760 | + h->plt.offset + 4) | |
4761 | - (input_section->output_section->vma | |
4762 | + input_section->output_offset | |
4763 | + rel->r_offset); | |
4764 | ||
4765 | break; | |
4766 | ||
4767 | case R_NDS32_GOTPC20: | |
4768 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4769 | ld24 rx,#_GLOBAL_OFFSET_TABLE_ */ | |
4770 | relocation = elf_gp (output_bfd); | |
4771 | break; | |
4772 | ||
4773 | case R_NDS32_GOTPC_HI20: | |
4774 | case R_NDS32_GOTPC_LO12: | |
4775 | { | |
4776 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4777 | bl .+4 | |
4778 | seth rx,#high(_GLOBAL_OFFSET_TABLE_) | |
4779 | or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4780 | or | |
4781 | bl .+4 | |
4782 | seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) | |
4783 | add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4784 | */ | |
4785 | relocation = elf_gp (output_bfd); | |
4786 | relocation -= (input_section->output_section->vma | |
4787 | + input_section->output_offset + rel->r_offset); | |
4788 | break; | |
4789 | } | |
4790 | ||
4791 | case R_NDS32_GOT20: | |
4792 | /* Fall through. */ | |
4793 | case R_NDS32_GOT_HI20: | |
4794 | case R_NDS32_GOT_LO12: | |
4795 | case R_NDS32_GOT_LO15: | |
4796 | case R_NDS32_GOT_LO19: | |
4797 | /* Relocation is to the entry for this symbol in the global | |
4798 | offset table. */ | |
4799 | BFD_ASSERT (sgot != NULL); | |
4800 | ||
4801 | if (h != NULL) | |
4802 | { | |
4803 | bfd_boolean dyn; | |
4804 | bfd_vma off; | |
4805 | ||
4806 | off = h->got.offset; | |
4807 | BFD_ASSERT (off != (bfd_vma) - 1); | |
4808 | dyn = htab->root.dynamic_sections_created; | |
0e1862bb L |
4809 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
4810 | bfd_link_pic (info), | |
4811 | h) | |
4812 | || (bfd_link_pic (info) | |
35c08157 KLC |
4813 | && (info->symbolic |
4814 | || h->dynindx == -1 | |
4815 | || h->forced_local) && h->def_regular)) | |
4816 | { | |
4817 | /* This is actually a static link, or it is a | |
4818 | -Bsymbolic link and the symbol is defined | |
4819 | locally, or the symbol was forced to be local | |
4820 | because of a version file. We must initialize | |
4821 | this entry in the global offset table. Since the | |
4822 | offset must always be a multiple of 4, we use the | |
4823 | least significant bit to record whether we have | |
4824 | initialized it already. | |
4825 | ||
4826 | When doing a dynamic link, we create a .rela.got | |
4827 | relocation entry to initialize the value. This | |
4828 | is done in the finish_dynamic_symbol routine. */ | |
4829 | if ((off & 1) != 0) | |
4830 | off &= ~1; | |
4831 | else | |
4832 | { | |
4833 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4834 | h->got.offset |= 1; | |
4835 | } | |
4836 | } | |
4837 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4838 | - elf_gp (output_bfd); | |
4839 | } | |
4840 | else | |
4841 | { | |
4842 | bfd_vma off; | |
4843 | bfd_byte *loc; | |
4844 | ||
4845 | BFD_ASSERT (local_got_offsets != NULL | |
4846 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
4847 | ||
4848 | off = local_got_offsets[r_symndx]; | |
4849 | ||
4850 | /* The offset must always be a multiple of 4. We use | |
4851 | the least significant bit to record whether we have | |
4852 | already processed this entry. */ | |
4853 | if ((off & 1) != 0) | |
4854 | off &= ~1; | |
4855 | else | |
4856 | { | |
4857 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4858 | ||
0e1862bb | 4859 | if (bfd_link_pic (info)) |
35c08157 KLC |
4860 | { |
4861 | asection *srelgot; | |
4862 | Elf_Internal_Rela outrel; | |
4863 | ||
4864 | /* We need to generate a R_NDS32_RELATIVE reloc | |
4865 | for the dynamic linker. */ | |
4866 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4867 | BFD_ASSERT (srelgot != NULL); | |
4868 | ||
4869 | outrel.r_offset = (elf_gp (output_bfd) | |
4870 | + sgot->output_offset + off); | |
4871 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4872 | outrel.r_addend = relocation; | |
4873 | loc = srelgot->contents; | |
4874 | loc += | |
4875 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
4876 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4877 | ++srelgot->reloc_count; | |
4878 | } | |
4879 | local_got_offsets[r_symndx] |= 1; | |
4880 | } | |
4881 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4882 | - elf_gp (output_bfd); | |
4883 | } | |
4884 | ||
4885 | break; | |
4886 | ||
4887 | case R_NDS32_16_RELA: | |
4888 | case R_NDS32_20_RELA: | |
4889 | case R_NDS32_5_RELA: | |
4890 | case R_NDS32_32_RELA: | |
4891 | case R_NDS32_9_PCREL_RELA: | |
4892 | case R_NDS32_WORD_9_PCREL_RELA: | |
4893 | case R_NDS32_10_UPCREL_RELA: | |
4894 | case R_NDS32_15_PCREL_RELA: | |
4895 | case R_NDS32_17_PCREL_RELA: | |
4896 | case R_NDS32_25_PCREL_RELA: | |
4897 | case R_NDS32_HI20_RELA: | |
4898 | case R_NDS32_LO12S3_RELA: | |
4899 | case R_NDS32_LO12S2_RELA: | |
4900 | case R_NDS32_LO12S2_DP_RELA: | |
4901 | case R_NDS32_LO12S2_SP_RELA: | |
4902 | case R_NDS32_LO12S1_RELA: | |
4903 | case R_NDS32_LO12S0_RELA: | |
4904 | case R_NDS32_LO12S0_ORI_RELA: | |
0e1862bb | 4905 | if (bfd_link_pic (info) && r_symndx != 0 |
35c08157 KLC |
4906 | && (input_section->flags & SEC_ALLOC) != 0 |
4907 | && (eliminate_gc_relocs == 0 | |
4908 | || (sec && (sec->flags & SEC_EXCLUDE) == 0)) | |
4909 | && ((r_type != R_NDS32_9_PCREL_RELA | |
4910 | && r_type != R_NDS32_WORD_9_PCREL_RELA | |
4911 | && r_type != R_NDS32_10_UPCREL_RELA | |
4912 | && r_type != R_NDS32_15_PCREL_RELA | |
4913 | && r_type != R_NDS32_17_PCREL_RELA | |
4914 | && r_type != R_NDS32_25_PCREL_RELA | |
4915 | && !(r_type == R_NDS32_32_RELA | |
4916 | && strcmp (input_section->name, ".eh_frame") == 0)) | |
4917 | || (h != NULL && h->dynindx != -1 | |
4918 | && (!info->symbolic || !h->def_regular)))) | |
4919 | { | |
4920 | Elf_Internal_Rela outrel; | |
4921 | bfd_boolean skip, relocate; | |
4922 | bfd_byte *loc; | |
4923 | ||
4924 | /* When generating a shared object, these relocations | |
4925 | are copied into the output file to be resolved at run | |
4926 | time. */ | |
4927 | ||
4928 | if (sreloc == NULL) | |
4929 | { | |
4930 | const char *name; | |
4931 | ||
4932 | name = bfd_elf_string_from_elf_section | |
4933 | (input_bfd, elf_elfheader (input_bfd)->e_shstrndx, | |
4934 | elf_section_data (input_section)->rela.hdr->sh_name); | |
4935 | if (name == NULL) | |
4936 | return FALSE; | |
4937 | ||
4938 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
4939 | && strcmp (bfd_get_section_name (input_bfd, | |
4940 | input_section), | |
4941 | name + 5) == 0); | |
4942 | ||
4943 | sreloc = bfd_get_section_by_name (dynobj, name); | |
4944 | BFD_ASSERT (sreloc != NULL); | |
4945 | } | |
4946 | ||
4947 | skip = FALSE; | |
4948 | relocate = FALSE; | |
4949 | ||
4950 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4951 | info, | |
4952 | input_section, | |
4953 | rel->r_offset); | |
4954 | if (outrel.r_offset == (bfd_vma) - 1) | |
4955 | skip = TRUE; | |
4956 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4957 | skip = TRUE, relocate = TRUE; | |
4958 | outrel.r_offset += (input_section->output_section->vma | |
4959 | + input_section->output_offset); | |
4960 | ||
4961 | if (skip) | |
4962 | memset (&outrel, 0, sizeof outrel); | |
4963 | else if (r_type == R_NDS32_17_PCREL_RELA | |
4964 | || r_type == R_NDS32_15_PCREL_RELA | |
4965 | || r_type == R_NDS32_25_PCREL_RELA) | |
4966 | { | |
4967 | BFD_ASSERT (h != NULL && h->dynindx != -1); | |
4968 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4969 | outrel.r_addend = rel->r_addend; | |
4970 | } | |
4971 | else | |
4972 | { | |
4973 | /* h->dynindx may be -1 if this symbol was marked to | |
4974 | become local. */ | |
4975 | if (h == NULL | |
4976 | || ((info->symbolic || h->dynindx == -1) | |
4977 | && h->def_regular)) | |
4978 | { | |
4979 | relocate = TRUE; | |
4980 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4981 | outrel.r_addend = relocation + rel->r_addend; | |
4982 | } | |
4983 | else | |
4984 | { | |
4985 | BFD_ASSERT (h->dynindx != -1); | |
4986 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4987 | outrel.r_addend = rel->r_addend; | |
4988 | } | |
4989 | } | |
4990 | ||
4991 | loc = sreloc->contents; | |
4992 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
4993 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4994 | ++sreloc->reloc_count; | |
4995 | ||
4996 | /* If this reloc is against an external symbol, we do | |
4997 | not want to fiddle with the addend. Otherwise, we | |
4998 | need to include the symbol value so that it becomes | |
4999 | an addend for the dynamic reloc. */ | |
5000 | if (!relocate) | |
5001 | continue; | |
5002 | } | |
5003 | break; | |
5004 | ||
5005 | case R_NDS32_25_ABS_RELA: | |
0e1862bb | 5006 | if (bfd_link_pic (info)) |
35c08157 KLC |
5007 | { |
5008 | (*_bfd_error_handler) | |
1c8f6a4d KLC |
5009 | (_("%s: warning: cannot deal R_NDS32_25_ABS_RELA in shared " |
5010 | "mode."), bfd_get_filename (input_bfd)); | |
35c08157 KLC |
5011 | return FALSE; |
5012 | } | |
5013 | break; | |
5014 | ||
5015 | case R_NDS32_9_PCREL: | |
5016 | r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section, | |
5017 | contents, offset, | |
5018 | sec, relocation, addend); | |
5019 | goto check_reloc; | |
5020 | ||
5021 | case R_NDS32_HI20: | |
5022 | { | |
5023 | Elf_Internal_Rela *lorel; | |
5024 | ||
5025 | /* We allow an arbitrary number of HI20 relocs before the | |
5026 | LO12 reloc. This permits gcc to emit the HI and LO relocs | |
5027 | itself. */ | |
5028 | for (lorel = rel + 1; | |
5029 | (lorel < relend | |
5030 | && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++) | |
5031 | continue; | |
5032 | if (lorel < relend | |
5033 | && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3 | |
5034 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2 | |
5035 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1 | |
5036 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0)) | |
5037 | { | |
5038 | nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel, | |
5039 | contents, relocation + addend); | |
5040 | r = bfd_reloc_ok; | |
5041 | } | |
5042 | else | |
5043 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1c8f6a4d KLC |
5044 | contents, offset, relocation, |
5045 | addend); | |
35c08157 KLC |
5046 | } |
5047 | ||
5048 | goto check_reloc; | |
5049 | ||
5050 | case R_NDS32_GOT17S2_RELA: | |
5051 | case R_NDS32_GOT15S2_RELA: | |
5052 | { | |
5053 | bfd_vma off; | |
5054 | ||
5055 | BFD_ASSERT (sgot != NULL); | |
5056 | ||
5057 | if (h != NULL) | |
5058 | { | |
5059 | bfd_boolean dyn; | |
5060 | ||
5061 | off = h->got.offset; | |
5062 | BFD_ASSERT (off != (bfd_vma) - 1); | |
5063 | ||
5064 | dyn = htab->root.dynamic_sections_created; | |
5065 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL | |
0e1862bb L |
5066 | (dyn, bfd_link_pic (info), h) |
5067 | || (bfd_link_pic (info) | |
5068 | && (info->symbolic | |
5069 | || h->dynindx == -1 | |
5070 | || h->forced_local) | |
5071 | && h->def_regular)) | |
35c08157 KLC |
5072 | { |
5073 | /* This is actually a static link, or it is a | |
5074 | -Bsymbolic link and the symbol is defined | |
5075 | locally, or the symbol was forced to be local | |
5076 | because of a version file. We must initialize | |
5077 | this entry in the global offset table. Since the | |
5078 | offset must always be a multiple of 4, we use the | |
5079 | least significant bit to record whether we have | |
5080 | initialized it already. | |
5081 | ||
5082 | When doing a dynamic link, we create a .rela.got | |
5083 | relocation entry to initialize the value. This | |
5084 | is done in the finish_dynamic_symbol routine. */ | |
5085 | if ((off & 1) != 0) | |
5086 | off &= ~1; | |
5087 | else | |
5088 | { | |
5089 | bfd_put_32 (output_bfd, relocation, | |
5090 | sgot->contents + off); | |
5091 | h->got.offset |= 1; | |
5092 | } | |
5093 | } | |
5094 | } | |
5095 | else | |
5096 | { | |
5097 | bfd_byte *loc; | |
5098 | ||
5099 | BFD_ASSERT (local_got_offsets != NULL | |
5100 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
5101 | ||
5102 | off = local_got_offsets[r_symndx]; | |
5103 | ||
5104 | /* The offset must always be a multiple of 4. We use | |
5105 | the least significant bit to record whether we have | |
5106 | already processed this entry. */ | |
5107 | if ((off & 1) != 0) | |
5108 | off &= ~1; | |
5109 | else | |
5110 | { | |
5111 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
5112 | ||
0e1862bb | 5113 | if (bfd_link_pic (info)) |
35c08157 KLC |
5114 | { |
5115 | asection *srelgot; | |
5116 | Elf_Internal_Rela outrel; | |
5117 | ||
5118 | /* We need to generate a R_NDS32_RELATIVE reloc | |
5119 | for the dynamic linker. */ | |
5120 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
5121 | BFD_ASSERT (srelgot != NULL); | |
5122 | ||
5123 | outrel.r_offset = (elf_gp (output_bfd) | |
5124 | + sgot->output_offset + off); | |
5125 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
5126 | outrel.r_addend = relocation; | |
5127 | loc = srelgot->contents; | |
5128 | loc += | |
5129 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
5130 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5131 | ++srelgot->reloc_count; | |
5132 | } | |
5133 | local_got_offsets[r_symndx] |= 1; | |
5134 | } | |
5135 | } | |
5136 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
5137 | - elf_gp (output_bfd); | |
5138 | } | |
5139 | if (relocation & align) | |
5140 | { | |
5141 | /* Incorrect alignment. */ | |
5142 | (*_bfd_error_handler) | |
5143 | (_("%B: warning: unaligned access to GOT entry."), input_bfd); | |
5144 | ret = FALSE; | |
5145 | r = bfd_reloc_dangerous; | |
5146 | goto check_reloc; | |
5147 | } | |
5148 | break; | |
5149 | ||
5150 | case R_NDS32_SDA16S3_RELA: | |
5151 | case R_NDS32_SDA15S3_RELA: | |
5152 | case R_NDS32_SDA15S3: | |
5153 | align = 0x7; | |
5154 | goto handle_sda; | |
5155 | ||
5156 | case R_NDS32_SDA17S2_RELA: | |
5157 | case R_NDS32_SDA15S2_RELA: | |
5158 | case R_NDS32_SDA12S2_SP_RELA: | |
5159 | case R_NDS32_SDA12S2_DP_RELA: | |
5160 | case R_NDS32_SDA15S2: | |
5161 | case R_NDS32_SDA_FP7U2_RELA: | |
5162 | align = 0x3; | |
5163 | goto handle_sda; | |
5164 | ||
5165 | case R_NDS32_SDA18S1_RELA: | |
5166 | case R_NDS32_SDA15S1_RELA: | |
5167 | case R_NDS32_SDA15S1: | |
5168 | align = 0x1; | |
5169 | goto handle_sda; | |
5170 | ||
5171 | case R_NDS32_SDA19S0_RELA: | |
5172 | case R_NDS32_SDA15S0_RELA: | |
5173 | case R_NDS32_SDA15S0: | |
5174 | { | |
5175 | align = 0x0; | |
5176 | handle_sda: | |
5177 | BFD_ASSERT (sec != NULL); | |
5178 | ||
5179 | /* If the symbol is in the abs section, the out_bfd will be null. | |
5180 | This happens when the relocation has a symbol@GOTOFF. */ | |
5181 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE); | |
5182 | if (r != bfd_reloc_ok) | |
5183 | { | |
5184 | (*_bfd_error_handler) | |
5185 | (_("%B: warning: relocate SDA_BASE failed."), input_bfd); | |
5186 | ret = FALSE; | |
5187 | goto check_reloc; | |
5188 | } | |
5189 | ||
5190 | /* At this point `relocation' contains the object's | |
5191 | address. */ | |
5192 | if (r_type == R_NDS32_SDA_FP7U2_RELA) | |
5193 | { | |
5194 | relocation -= fpbase_addr; | |
5195 | } | |
5196 | else | |
5197 | relocation -= gp; | |
5198 | /* Now it contains the offset from _SDA_BASE_. */ | |
5199 | ||
5200 | /* Make sure alignment is correct. */ | |
5201 | ||
5202 | if (relocation & align) | |
5203 | { | |
5204 | /* Incorrect alignment. */ | |
5205 | (*_bfd_error_handler) | |
5206 | (_("%B(%A): warning: unaligned small data access of type %d."), | |
5207 | input_bfd, input_section, r_type); | |
5208 | ret = FALSE; | |
5209 | goto check_reloc; | |
5210 | } | |
5211 | } | |
5212 | ||
5213 | break; | |
5214 | case R_NDS32_17IFC_PCREL_RELA: | |
5215 | case R_NDS32_10IFCU_PCREL_RELA: | |
5216 | /* do nothing */ | |
5217 | break; | |
5218 | ||
1c8f6a4d KLC |
5219 | case R_NDS32_TLS_LE_HI20: |
5220 | case R_NDS32_TLS_LE_LO12: | |
5221 | case R_NDS32_TLS_LE_20: | |
5222 | case R_NDS32_TLS_LE_15S0: | |
5223 | case R_NDS32_TLS_LE_15S1: | |
5224 | case R_NDS32_TLS_LE_15S2: | |
5225 | if (elf_hash_table (info)->tls_sec != NULL) | |
5226 | relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET); | |
5227 | break; | |
5228 | case R_NDS32_TLS_IE_HI20: | |
5229 | case R_NDS32_TLS_IE_LO12S2: | |
5230 | { | |
5231 | /* Relocation is to the entry for this symbol in the global | |
5232 | offset table. */ | |
5233 | unsigned int tls_type; | |
5234 | asection *srelgot; | |
5235 | Elf_Internal_Rela outrel; | |
5236 | bfd_vma off; | |
5237 | bfd_byte *loc; | |
5238 | int indx = 0; | |
5239 | ||
5240 | BFD_ASSERT (sgot != NULL); | |
5241 | if (h != NULL) | |
5242 | { | |
5243 | bfd_boolean dyn; | |
5244 | ||
5245 | off = h->got.offset; | |
5246 | BFD_ASSERT (off != (bfd_vma) - 1); | |
5247 | dyn = htab->root.dynamic_sections_created; | |
5248 | tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type; | |
0e1862bb L |
5249 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
5250 | && (!bfd_link_pic (info) | |
1c8f6a4d KLC |
5251 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
5252 | indx = h->dynindx; | |
5253 | } | |
5254 | else | |
5255 | { | |
5256 | /* Never happen currently. */ | |
5257 | BFD_ASSERT (local_got_offsets != NULL | |
5258 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
5259 | ||
5260 | off = local_got_offsets[r_symndx]; | |
5261 | ||
5262 | tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx]; | |
5263 | } | |
5264 | relocation = sgot->output_section->vma + sgot->output_offset + off; | |
5265 | ||
5266 | if (r_type == R_NDS32_TLS_IE_LO12S2) | |
5267 | break; | |
5268 | ||
5269 | /* The offset must always be a multiple of 4. We use | |
5270 | the least significant bit to record whether we have | |
5271 | already processed this entry. */ | |
5272 | if ((off & 1) != 0) | |
5273 | off &= ~1; | |
5274 | else | |
5275 | { | |
5276 | bfd_boolean need_relocs = FALSE; | |
5277 | srelgot = htab->srelgot; | |
0e1862bb | 5278 | if ((bfd_link_pic (info) || indx != 0) |
1c8f6a4d KLC |
5279 | && (h == NULL |
5280 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5281 | || h->root.type != bfd_link_hash_undefweak)) | |
5282 | { | |
5283 | need_relocs = TRUE; | |
5284 | BFD_ASSERT (srelgot != NULL); | |
5285 | } | |
5286 | if (tls_type & GOT_TLS_IE) | |
5287 | { | |
5288 | if (need_relocs) | |
5289 | { | |
5290 | if (h->dynindx == 0) | |
5291 | outrel.r_addend = relocation - dtpoff_base (info); | |
5292 | else | |
5293 | outrel.r_addend = 0; | |
5294 | outrel.r_offset = (sgot->output_section->vma | |
5295 | + sgot->output_offset | |
5296 | + off); | |
5297 | outrel.r_info = | |
5298 | ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF); | |
5299 | ||
5300 | loc = srelgot->contents; | |
5301 | loc += | |
5302 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
5303 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5304 | ++srelgot->reloc_count; | |
5305 | } | |
5306 | else | |
5307 | bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET, | |
5308 | sgot->contents + off); | |
5309 | } | |
5310 | } | |
5311 | } | |
5312 | break; | |
5313 | ||
35c08157 KLC |
5314 | /* DON'T fall through. */ |
5315 | ||
5316 | default: | |
5317 | /* OLD_NDS32_RELOC. */ | |
5318 | ||
5319 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5320 | contents, offset, relocation, addend); | |
5321 | goto check_reloc; | |
5322 | } | |
5323 | ||
5324 | switch ((int) r_type) | |
5325 | { | |
5326 | case R_NDS32_20_RELA: | |
5327 | case R_NDS32_5_RELA: | |
5328 | case R_NDS32_9_PCREL_RELA: | |
5329 | case R_NDS32_WORD_9_PCREL_RELA: | |
5330 | case R_NDS32_10_UPCREL_RELA: | |
5331 | case R_NDS32_15_PCREL_RELA: | |
5332 | case R_NDS32_17_PCREL_RELA: | |
5333 | case R_NDS32_25_PCREL_RELA: | |
5334 | case R_NDS32_25_ABS_RELA: | |
5335 | case R_NDS32_HI20_RELA: | |
5336 | case R_NDS32_LO12S3_RELA: | |
5337 | case R_NDS32_LO12S2_RELA: | |
5338 | case R_NDS32_LO12S2_DP_RELA: | |
5339 | case R_NDS32_LO12S2_SP_RELA: | |
5340 | case R_NDS32_LO12S1_RELA: | |
5341 | case R_NDS32_LO12S0_RELA: | |
5342 | case R_NDS32_LO12S0_ORI_RELA: | |
5343 | case R_NDS32_SDA16S3_RELA: | |
5344 | case R_NDS32_SDA17S2_RELA: | |
5345 | case R_NDS32_SDA18S1_RELA: | |
5346 | case R_NDS32_SDA19S0_RELA: | |
5347 | case R_NDS32_SDA15S3_RELA: | |
5348 | case R_NDS32_SDA15S2_RELA: | |
5349 | case R_NDS32_SDA12S2_DP_RELA: | |
5350 | case R_NDS32_SDA12S2_SP_RELA: | |
5351 | case R_NDS32_SDA15S1_RELA: | |
5352 | case R_NDS32_SDA15S0_RELA: | |
5353 | case R_NDS32_SDA_FP7U2_RELA: | |
5354 | case R_NDS32_9_PLTREL: | |
5355 | case R_NDS32_25_PLTREL: | |
5356 | case R_NDS32_GOT20: | |
5357 | case R_NDS32_GOT_HI20: | |
5358 | case R_NDS32_GOT_LO12: | |
5359 | case R_NDS32_GOT_LO15: | |
5360 | case R_NDS32_GOT_LO19: | |
5361 | case R_NDS32_GOT15S2_RELA: | |
5362 | case R_NDS32_GOT17S2_RELA: | |
5363 | case R_NDS32_GOTPC20: | |
5364 | case R_NDS32_GOTPC_HI20: | |
5365 | case R_NDS32_GOTPC_LO12: | |
5366 | case R_NDS32_GOTOFF: | |
5367 | case R_NDS32_GOTOFF_HI20: | |
5368 | case R_NDS32_GOTOFF_LO12: | |
5369 | case R_NDS32_GOTOFF_LO15: | |
5370 | case R_NDS32_GOTOFF_LO19: | |
5371 | case R_NDS32_PLTREL_HI20: | |
5372 | case R_NDS32_PLTREL_LO12: | |
5373 | case R_NDS32_PLT_GOTREL_HI20: | |
5374 | case R_NDS32_PLT_GOTREL_LO12: | |
5375 | case R_NDS32_PLT_GOTREL_LO15: | |
5376 | case R_NDS32_PLT_GOTREL_LO19: | |
5377 | case R_NDS32_PLT_GOTREL_LO20: | |
5378 | case R_NDS32_17IFC_PCREL_RELA: | |
5379 | case R_NDS32_10IFCU_PCREL_RELA: | |
1c8f6a4d KLC |
5380 | case R_NDS32_TLS_LE_HI20: |
5381 | case R_NDS32_TLS_LE_LO12: | |
5382 | case R_NDS32_TLS_IE_HI20: | |
5383 | case R_NDS32_TLS_IE_LO12S2: | |
5384 | case R_NDS32_TLS_LE_20: | |
5385 | case R_NDS32_TLS_LE_15S0: | |
5386 | case R_NDS32_TLS_LE_15S1: | |
5387 | case R_NDS32_TLS_LE_15S2: | |
35c08157 | 5388 | /* Instruction related relocs must handle endian properly. */ |
1c8f6a4d | 5389 | /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */ |
35c08157 KLC |
5390 | r = nds32_elf_final_link_relocate (howto, input_bfd, |
5391 | input_section, contents, | |
5392 | rel->r_offset, relocation, | |
5393 | rel->r_addend); | |
5394 | break; | |
5395 | ||
5396 | default: | |
5397 | /* All other relocs can use default handler. */ | |
5398 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5399 | contents, rel->r_offset, | |
5400 | relocation, rel->r_addend); | |
5401 | break; | |
5402 | } | |
5403 | ||
5404 | check_reloc: | |
5405 | ||
5406 | if (r != bfd_reloc_ok) | |
5407 | { | |
5408 | /* FIXME: This should be generic enough to go in a utility. */ | |
5409 | const char *name; | |
5410 | ||
5411 | if (h != NULL) | |
5412 | name = h->root.root.string; | |
5413 | else | |
5414 | { | |
5415 | name = bfd_elf_string_from_elf_section | |
5416 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
5417 | if (name == NULL || *name == '\0') | |
5418 | name = bfd_section_name (input_bfd, sec); | |
5419 | } | |
5420 | ||
5421 | if (errmsg != NULL) | |
5422 | goto common_error; | |
5423 | ||
5424 | switch (r) | |
5425 | { | |
5426 | case bfd_reloc_overflow: | |
5427 | if (!((*info->callbacks->reloc_overflow) | |
5428 | (info, (h ? &h->root : NULL), name, howto->name, | |
5429 | (bfd_vma) 0, input_bfd, input_section, offset))) | |
5430 | return FALSE; | |
5431 | break; | |
5432 | ||
5433 | case bfd_reloc_undefined: | |
5434 | if (!((*info->callbacks->undefined_symbol) | |
5435 | (info, name, input_bfd, input_section, offset, TRUE))) | |
5436 | return FALSE; | |
5437 | break; | |
5438 | ||
5439 | case bfd_reloc_outofrange: | |
5440 | errmsg = _("internal error: out of range error"); | |
5441 | goto common_error; | |
5442 | ||
5443 | case bfd_reloc_notsupported: | |
5444 | errmsg = _("internal error: unsupported relocation error"); | |
5445 | goto common_error; | |
5446 | ||
5447 | case bfd_reloc_dangerous: | |
5448 | errmsg = _("internal error: dangerous error"); | |
5449 | goto common_error; | |
5450 | ||
5451 | default: | |
5452 | errmsg = _("internal error: unknown error"); | |
5453 | /* Fall through. */ | |
5454 | ||
5455 | common_error: | |
5456 | if (!((*info->callbacks->warning) | |
5457 | (info, errmsg, name, input_bfd, input_section, offset))) | |
5458 | return FALSE; | |
5459 | break; | |
5460 | } | |
5461 | } | |
5462 | } | |
5463 | ||
5464 | return ret; | |
5465 | } | |
5466 | ||
5467 | /* Finish up dynamic symbol handling. We set the contents of various | |
5468 | dynamic sections here. */ | |
5469 | ||
5470 | static bfd_boolean | |
5471 | nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, | |
5472 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) | |
5473 | { | |
5474 | struct elf_nds32_link_hash_table *htab; | |
5475 | bfd_byte *loc; | |
5476 | ||
5477 | htab = nds32_elf_hash_table (info); | |
5478 | ||
5479 | if (h->plt.offset != (bfd_vma) - 1) | |
5480 | { | |
5481 | asection *splt; | |
5482 | asection *sgot; | |
5483 | asection *srela; | |
5484 | ||
5485 | bfd_vma plt_index; | |
5486 | bfd_vma got_offset; | |
5487 | bfd_vma local_plt_offset; | |
5488 | Elf_Internal_Rela rela; | |
5489 | ||
5490 | /* This symbol has an entry in the procedure linkage table. Set | |
5491 | it up. */ | |
5492 | ||
5493 | BFD_ASSERT (h->dynindx != -1); | |
5494 | ||
5495 | splt = htab->splt; | |
5496 | sgot = htab->sgotplt; | |
5497 | srela = htab->srelplt; | |
5498 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
5499 | ||
5500 | /* Get the index in the procedure linkage table which | |
5501 | corresponds to this symbol. This is the index of this symbol | |
5502 | in all the symbols for which we are making plt entries. The | |
5503 | first entry in the procedure linkage table is reserved. */ | |
5504 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
5505 | ||
5506 | /* Get the offset into the .got table of the entry that | |
5507 | corresponds to this function. Each .got entry is 4 bytes. | |
5508 | The first three are reserved. */ | |
5509 | got_offset = (plt_index + 3) * 4; | |
5510 | ||
5511 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 5512 | if (!bfd_link_pic (info)) |
35c08157 KLC |
5513 | { |
5514 | unsigned long insn; | |
5515 | ||
5516 | insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma | |
5517 | + sgot->output_offset + got_offset) >> 12) | |
5518 | & 0xfffff); | |
5519 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5520 | ||
5521 | insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma | |
5522 | + sgot->output_offset + got_offset) & 0x0fff) | |
5523 | >> 2); | |
5524 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5525 | ||
5526 | insn = PLT_ENTRY_WORD2; | |
5527 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5528 | ||
5529 | insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff); | |
5530 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5531 | ||
5532 | insn = PLT_ENTRY_WORD4 | |
5533 | + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff); | |
5534 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5535 | local_plt_offset = 12; | |
5536 | } | |
5537 | else | |
5538 | { | |
5539 | /* sda_base must be set at this time. */ | |
5540 | unsigned long insn; | |
5541 | long offset; | |
5542 | ||
5543 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5544 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5545 | offset = sgot->output_section->vma + sgot->output_offset + got_offset | |
5546 | - elf_gp (output_bfd); | |
5547 | insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff); | |
5548 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5549 | ||
5550 | insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff); | |
5551 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5552 | ||
5553 | insn = PLT_PIC_ENTRY_WORD2; | |
5554 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5555 | ||
5556 | insn = PLT_PIC_ENTRY_WORD3; | |
5557 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5558 | ||
5559 | insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff); | |
5560 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5561 | ||
5562 | insn = PLT_PIC_ENTRY_WORD5 | |
5563 | + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff); | |
5564 | bfd_putb32 (insn, splt->contents + h->plt.offset + 20); | |
5565 | ||
5566 | local_plt_offset = 16; | |
5567 | } | |
5568 | ||
5569 | /* Fill in the entry in the global offset table, | |
5570 | so it will fall through to the next instruction for the first time. */ | |
5571 | bfd_put_32 (output_bfd, | |
5572 | (splt->output_section->vma + splt->output_offset | |
5573 | + h->plt.offset + local_plt_offset), | |
5574 | sgot->contents + got_offset); | |
5575 | ||
5576 | /* Fill in the entry in the .rela.plt section. */ | |
5577 | rela.r_offset = (sgot->output_section->vma | |
5578 | + sgot->output_offset + got_offset); | |
5579 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT); | |
5580 | rela.r_addend = 0; | |
5581 | loc = srela->contents; | |
5582 | loc += plt_index * sizeof (Elf32_External_Rela); | |
5583 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5584 | ||
5585 | if (!h->def_regular) | |
5586 | { | |
5587 | /* Mark the symbol as undefined, rather than as defined in | |
5588 | the .plt section. Leave the value alone. */ | |
5589 | sym->st_shndx = SHN_UNDEF; | |
5590 | if (!h->ref_regular_nonweak) | |
5591 | sym->st_value = 0; | |
5592 | } | |
5593 | } | |
5594 | ||
5595 | if (h->got.offset != (bfd_vma) - 1) | |
5596 | { | |
5597 | asection *sgot; | |
5598 | asection *srela; | |
5599 | Elf_Internal_Rela rela; | |
5600 | ||
5601 | /* This symbol has an entry in the global offset table. | |
5602 | Set it up. */ | |
5603 | ||
5604 | sgot = htab->sgot; | |
5605 | srela = htab->srelgot; | |
5606 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
5607 | ||
5608 | rela.r_offset = (sgot->output_section->vma | |
5609 | + sgot->output_offset + (h->got.offset & ~1)); | |
5610 | ||
5611 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5612 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5613 | the symbol was forced to be local because of a version file. | |
5614 | The entry in the global offset table will already have been | |
5615 | initialized in the relocate_section function. */ | |
0e1862bb | 5616 | if (bfd_link_pic (info) |
35c08157 KLC |
5617 | && (info->symbolic |
5618 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
5619 | { | |
5620 | rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
5621 | rela.r_addend = (h->root.u.def.value | |
5622 | + h->root.u.def.section->output_section->vma | |
5623 | + h->root.u.def.section->output_offset); | |
5624 | } | |
5625 | else | |
5626 | { | |
5627 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
5628 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
5629 | sgot->contents + h->got.offset); | |
5630 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT); | |
5631 | rela.r_addend = 0; | |
5632 | } | |
5633 | ||
5634 | loc = srela->contents; | |
5635 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); | |
5636 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5637 | ++srela->reloc_count; | |
5638 | } | |
5639 | ||
5640 | if (h->needs_copy) | |
5641 | { | |
5642 | asection *s; | |
5643 | Elf_Internal_Rela rela; | |
5644 | ||
5645 | /* This symbols needs a copy reloc. Set it up. */ | |
5646 | ||
5647 | BFD_ASSERT (h->dynindx != -1 | |
5648 | && (h->root.type == bfd_link_hash_defined | |
5649 | || h->root.type == bfd_link_hash_defweak)); | |
5650 | ||
5651 | s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss"); | |
5652 | BFD_ASSERT (s != NULL); | |
5653 | ||
5654 | rela.r_offset = (h->root.u.def.value | |
5655 | + h->root.u.def.section->output_section->vma | |
5656 | + h->root.u.def.section->output_offset); | |
5657 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY); | |
5658 | rela.r_addend = 0; | |
5659 | loc = s->contents; | |
5660 | loc += s->reloc_count * sizeof (Elf32_External_Rela); | |
5661 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5662 | ++s->reloc_count; | |
5663 | } | |
5664 | ||
5665 | /* Mark some specially defined symbols as absolute. */ | |
5666 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5667 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5668 | sym->st_shndx = SHN_ABS; | |
5669 | ||
5670 | return TRUE; | |
5671 | } | |
5672 | ||
5673 | ||
5674 | /* Finish up the dynamic sections. */ | |
5675 | ||
5676 | static bfd_boolean | |
5677 | nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) | |
5678 | { | |
5679 | struct elf_nds32_link_hash_table *htab; | |
5680 | bfd *dynobj; | |
5681 | asection *sdyn; | |
5682 | asection *sgot; | |
5683 | ||
5684 | htab = nds32_elf_hash_table (info); | |
5685 | dynobj = htab->root.dynobj; | |
5686 | ||
5687 | sgot = htab->sgotplt; | |
5688 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5689 | ||
5690 | if (htab->root.dynamic_sections_created) | |
5691 | { | |
5692 | asection *splt; | |
5693 | Elf32_External_Dyn *dyncon, *dynconend; | |
5694 | ||
5695 | BFD_ASSERT (sgot != NULL && sdyn != NULL); | |
5696 | ||
5697 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
5698 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5699 | ||
5700 | for (; dyncon < dynconend; dyncon++) | |
5701 | { | |
5702 | Elf_Internal_Dyn dyn; | |
5703 | asection *s; | |
5704 | ||
5705 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5706 | ||
5707 | switch (dyn.d_tag) | |
5708 | { | |
5709 | default: | |
5710 | break; | |
5711 | ||
5712 | case DT_PLTGOT: | |
4ade44b7 | 5713 | s = htab->sgotplt; |
35c08157 KLC |
5714 | goto get_vma; |
5715 | case DT_JMPREL: | |
4ade44b7 | 5716 | s = htab->srelplt; |
35c08157 | 5717 | get_vma: |
4ade44b7 | 5718 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
35c08157 KLC |
5719 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5720 | break; | |
5721 | ||
5722 | case DT_PLTRELSZ: | |
4ade44b7 | 5723 | s = htab->srelplt; |
35c08157 KLC |
5724 | dyn.d_un.d_val = s->size; |
5725 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5726 | break; | |
5727 | ||
5728 | case DT_RELASZ: | |
5729 | /* My reading of the SVR4 ABI indicates that the | |
5730 | procedure linkage table relocs (DT_JMPREL) should be | |
5731 | included in the overall relocs (DT_RELA). This is | |
5732 | what Solaris does. However, UnixWare can not handle | |
5733 | that case. Therefore, we override the DT_RELASZ entry | |
5734 | here to make it not include the JMPREL relocs. Since | |
5735 | the linker script arranges for .rela.plt to follow all | |
5736 | other relocation sections, we don't have to worry | |
5737 | about changing the DT_RELA entry. */ | |
5738 | if (htab->srelplt != NULL) | |
5739 | { | |
4ade44b7 | 5740 | s = htab->srelplt; |
35c08157 KLC |
5741 | dyn.d_un.d_val -= s->size; |
5742 | } | |
5743 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5744 | break; | |
5745 | } | |
5746 | } | |
5747 | ||
5748 | /* Fill in the first entry in the procedure linkage table. */ | |
5749 | splt = htab->splt; | |
5750 | if (splt && splt->size > 0) | |
5751 | { | |
0e1862bb | 5752 | if (bfd_link_pic (info)) |
35c08157 KLC |
5753 | { |
5754 | unsigned long insn; | |
5755 | long offset; | |
5756 | ||
5757 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5758 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5759 | offset = sgot->output_section->vma + sgot->output_offset + 4 | |
5760 | - elf_gp (output_bfd); | |
5761 | insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff); | |
5762 | bfd_putb32 (insn, splt->contents); | |
5763 | ||
5764 | /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */ | |
5765 | /* here has a typo? */ | |
5766 | insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff); | |
5767 | bfd_putb32 (insn, splt->contents + 4); | |
5768 | ||
5769 | insn = PLT0_PIC_ENTRY_WORD2; | |
5770 | bfd_putb32 (insn, splt->contents + 8); | |
5771 | ||
5772 | insn = PLT0_PIC_ENTRY_WORD3; | |
5773 | bfd_putb32 (insn, splt->contents + 12); | |
5774 | ||
5775 | insn = PLT0_PIC_ENTRY_WORD4; | |
5776 | bfd_putb32 (insn, splt->contents + 16); | |
5777 | ||
5778 | insn = PLT0_PIC_ENTRY_WORD5; | |
5779 | bfd_putb32 (insn, splt->contents + 20); | |
5780 | } | |
5781 | else | |
5782 | { | |
5783 | unsigned long insn; | |
5784 | unsigned long addr; | |
5785 | ||
5786 | /* addr = .got + 4 */ | |
5787 | addr = sgot->output_section->vma + sgot->output_offset + 4; | |
5788 | insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff); | |
5789 | bfd_putb32 (insn, splt->contents); | |
5790 | ||
5791 | insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff); | |
5792 | bfd_putb32 (insn, splt->contents + 4); | |
5793 | ||
5794 | insn = PLT0_ENTRY_WORD2; | |
5795 | bfd_putb32 (insn, splt->contents + 8); | |
5796 | ||
5797 | insn = PLT0_ENTRY_WORD3; | |
5798 | bfd_putb32 (insn, splt->contents + 12); | |
5799 | ||
5800 | insn = PLT0_ENTRY_WORD4; | |
5801 | bfd_putb32 (insn, splt->contents + 16); | |
5802 | } | |
5803 | ||
5804 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
5805 | PLT_ENTRY_SIZE; | |
5806 | } | |
5807 | } | |
5808 | ||
5809 | /* Fill in the first three entries in the global offset table. */ | |
5810 | if (sgot && sgot->size > 0) | |
5811 | { | |
5812 | if (sdyn == NULL) | |
5813 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5814 | else | |
5815 | bfd_put_32 (output_bfd, | |
5816 | sdyn->output_section->vma + sdyn->output_offset, | |
5817 | sgot->contents); | |
5818 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5819 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5820 | ||
5821 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
5822 | } | |
5823 | ||
5824 | return TRUE; | |
5825 | } | |
5826 | \f | |
5827 | ||
5828 | /* Set the right machine number. */ | |
5829 | ||
5830 | static bfd_boolean | |
5831 | nds32_elf_object_p (bfd *abfd) | |
5832 | { | |
5833 | static unsigned int cur_arch = 0; | |
5834 | ||
5835 | if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)) | |
5836 | { | |
5837 | /* E_N1_ARCH is a wild card, so it is set only when no others exist. */ | |
5838 | cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH); | |
5839 | } | |
5840 | ||
5841 | switch (cur_arch) | |
5842 | { | |
5843 | default: | |
5844 | case E_N1_ARCH: | |
5845 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1); | |
5846 | break; | |
5847 | case E_N1H_ARCH: | |
5848 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h); | |
5849 | break; | |
5850 | case E_NDS_ARCH_STAR_V2_0: | |
5851 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2); | |
5852 | break; | |
5853 | case E_NDS_ARCH_STAR_V3_0: | |
5854 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3); | |
5855 | break; | |
5856 | case E_NDS_ARCH_STAR_V3_M: | |
5857 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m); | |
5858 | break; | |
5859 | } | |
5860 | ||
5861 | return TRUE; | |
5862 | } | |
5863 | ||
5864 | /* Store the machine number in the flags field. */ | |
5865 | ||
5866 | static void | |
5867 | nds32_elf_final_write_processing (bfd *abfd, | |
5868 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
5869 | { | |
5870 | unsigned long val; | |
5871 | static unsigned int cur_mach = 0; | |
5872 | ||
5873 | if (bfd_mach_n1 != bfd_get_mach (abfd)) | |
5874 | { | |
5875 | cur_mach = bfd_get_mach (abfd); | |
5876 | } | |
5877 | ||
5878 | switch (cur_mach) | |
5879 | { | |
5880 | case bfd_mach_n1: | |
5881 | /* Only happen when object is empty, since the case is abandon. */ | |
5882 | val = E_N1_ARCH; | |
5883 | val |= E_NDS_ABI_AABI; | |
5884 | val |= E_NDS32_ELF_VER_1_4; | |
5885 | break; | |
5886 | case bfd_mach_n1h: | |
5887 | val = E_N1H_ARCH; | |
5888 | break; | |
5889 | case bfd_mach_n1h_v2: | |
5890 | val = E_NDS_ARCH_STAR_V2_0; | |
5891 | break; | |
5892 | case bfd_mach_n1h_v3: | |
5893 | val = E_NDS_ARCH_STAR_V3_0; | |
5894 | break; | |
5895 | case bfd_mach_n1h_v3m: | |
5896 | val = E_NDS_ARCH_STAR_V3_M; | |
5897 | break; | |
5898 | default: | |
5899 | val = 0; | |
5900 | break; | |
5901 | } | |
5902 | ||
5903 | elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH; | |
5904 | elf_elfheader (abfd)->e_flags |= val; | |
5905 | } | |
5906 | ||
5907 | /* Function to keep NDS32 specific file flags. */ | |
5908 | ||
5909 | static bfd_boolean | |
5910 | nds32_elf_set_private_flags (bfd *abfd, flagword flags) | |
5911 | { | |
5912 | BFD_ASSERT (!elf_flags_init (abfd) | |
5913 | || elf_elfheader (abfd)->e_flags == flags); | |
5914 | ||
5915 | elf_elfheader (abfd)->e_flags = flags; | |
5916 | elf_flags_init (abfd) = TRUE; | |
5917 | return TRUE; | |
5918 | } | |
5919 | ||
5920 | static unsigned int | |
5921 | convert_e_flags (unsigned int e_flags, unsigned int arch) | |
5922 | { | |
5923 | if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9) | |
5924 | { | |
5925 | /* From 0.9 to 1.0. */ | |
5926 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0; | |
5927 | ||
5928 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5929 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5930 | if (arch == E_NDS_ARCH_STAR_V1_0) | |
5931 | { | |
5932 | /* Done. */ | |
5933 | return e_flags; | |
5934 | } | |
5935 | } | |
5936 | ||
5937 | /* From 1.0 to 2.0. */ | |
5938 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0; | |
5939 | ||
5940 | /* Clear E_NDS32_HAS_MFUSR_PC_INST. */ | |
5941 | e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST; | |
5942 | ||
5943 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5944 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5945 | return e_flags; | |
5946 | } | |
5947 | ||
5948 | static bfd_boolean | |
5949 | nds32_check_vec_size (bfd *ibfd) | |
5950 | { | |
5951 | static unsigned int nds32_vec_size = 0; | |
5952 | ||
5953 | asection *sec_t = NULL; | |
5954 | bfd_byte *contents = NULL; | |
5955 | ||
5956 | sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags"); | |
5957 | ||
5958 | if (sec_t && sec_t->size >= 4) | |
5959 | { | |
5960 | /* Get vec_size in file. */ | |
5961 | unsigned int flag_t; | |
5962 | ||
0c4bd9d9 | 5963 | nds32_get_section_contents (ibfd, sec_t, &contents, TRUE); |
35c08157 KLC |
5964 | flag_t = bfd_get_32 (ibfd, contents); |
5965 | ||
5966 | /* The value could only be 4 or 16. */ | |
5967 | ||
5968 | if (!nds32_vec_size) | |
5969 | /* Set if not set yet. */ | |
5970 | nds32_vec_size = (flag_t & 0x3); | |
5971 | else if (nds32_vec_size != (flag_t & 0x3)) | |
5972 | { | |
5973 | (*_bfd_error_handler) (_("%B: ISR vector size mismatch" | |
5974 | " with previous modules, previous %u-byte, current %u-byte"), | |
5975 | ibfd, | |
5976 | nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff, | |
5977 | (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff); | |
5978 | return FALSE; | |
5979 | } | |
5980 | else | |
5981 | /* Only keep the first vec_size section. */ | |
5982 | sec_t->flags |= SEC_EXCLUDE; | |
5983 | } | |
5984 | ||
5985 | return TRUE; | |
5986 | } | |
5987 | ||
5988 | /* Merge backend specific data from an object file to the output | |
5989 | object file when linking. */ | |
5990 | ||
5991 | static bfd_boolean | |
5992 | nds32_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5993 | { | |
5994 | flagword out_flags; | |
5995 | flagword in_flags; | |
5996 | flagword out_16regs; | |
5997 | flagword in_no_mac; | |
5998 | flagword out_no_mac; | |
5999 | flagword in_16regs; | |
6000 | flagword out_version; | |
6001 | flagword in_version; | |
6002 | flagword out_fpu_config; | |
6003 | flagword in_fpu_config; | |
6004 | ||
6005 | /* TODO: Revise to use object-attributes instead. */ | |
6006 | if (!nds32_check_vec_size (ibfd)) | |
6007 | return FALSE; | |
6008 | ||
6009 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
6010 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
6011 | return TRUE; | |
6012 | ||
6013 | if (bfd_little_endian (ibfd) != bfd_little_endian (obfd)) | |
6014 | { | |
6015 | (*_bfd_error_handler) | |
6016 | (_("%B: warning: Endian mismatch with previous modules."), ibfd); | |
6017 | ||
6018 | bfd_set_error (bfd_error_bad_value); | |
6019 | return FALSE; | |
6020 | } | |
6021 | ||
6022 | in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION; | |
6023 | if (in_version == E_NDS32_ELF_VER_1_2) | |
6024 | { | |
6025 | (*_bfd_error_handler) | |
6026 | (_("%B: warning: Older version of object file encountered, " | |
6027 | "Please recompile with current tool chain."), ibfd); | |
6028 | } | |
6029 | ||
6030 | /* We may need to merge V1 and V2 arch object files to V2. */ | |
6031 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6032 | != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
6033 | { | |
6034 | /* Need to convert version. */ | |
6035 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6036 | == E_NDS_ARCH_STAR_RESERVED) | |
6037 | { | |
6038 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
6039 | } | |
6040 | else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9 | |
6041 | || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6042 | > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
6043 | { | |
6044 | elf_elfheader (obfd)->e_flags = | |
6045 | convert_e_flags (elf_elfheader (obfd)->e_flags, | |
6046 | (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)); | |
6047 | } | |
6048 | else | |
6049 | { | |
6050 | elf_elfheader (ibfd)->e_flags = | |
6051 | convert_e_flags (elf_elfheader (ibfd)->e_flags, | |
6052 | (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)); | |
6053 | } | |
6054 | } | |
6055 | ||
6056 | /* Extract some flags. */ | |
6057 | in_flags = elf_elfheader (ibfd)->e_flags | |
6058 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
6059 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
6060 | ||
6061 | /* The following flags need special treatment. */ | |
6062 | in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
6063 | in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
6064 | in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
6065 | ||
6066 | /* Extract some flags. */ | |
6067 | out_flags = elf_elfheader (obfd)->e_flags | |
6068 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
6069 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
6070 | ||
6071 | /* The following flags need special treatment. */ | |
6072 | out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
6073 | out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
6074 | out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
6075 | out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION; | |
6076 | if (!elf_flags_init (obfd)) | |
6077 | { | |
6078 | /* If the input is the default architecture then do not | |
6079 | bother setting the flags for the output architecture, | |
6080 | instead allow future merges to do this. If no future | |
6081 | merges ever set these flags then they will retain their | |
6082 | unitialised values, which surprise surprise, correspond | |
6083 | to the default values. */ | |
6084 | if (bfd_get_arch_info (ibfd)->the_default) | |
6085 | return TRUE; | |
6086 | ||
6087 | elf_flags_init (obfd) = TRUE; | |
6088 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
6089 | ||
6090 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6091 | && bfd_get_arch_info (obfd)->the_default) | |
6092 | { | |
6093 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6094 | bfd_get_mach (ibfd)); | |
6095 | } | |
6096 | ||
6097 | return TRUE; | |
6098 | } | |
6099 | ||
6100 | /* Check flag compatibility. */ | |
6101 | if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI)) | |
6102 | { | |
6103 | (*_bfd_error_handler) | |
6104 | (_("%B: error: ABI mismatch with previous modules."), ibfd); | |
6105 | ||
6106 | bfd_set_error (bfd_error_bad_value); | |
6107 | return FALSE; | |
6108 | } | |
6109 | ||
6110 | if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH)) | |
6111 | { | |
6112 | if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH)) | |
6113 | { | |
6114 | (*_bfd_error_handler) | |
6115 | (_("%B: error: Instruction set mismatch with previous modules."), ibfd); | |
6116 | ||
6117 | bfd_set_error (bfd_error_bad_value); | |
6118 | return FALSE; | |
6119 | } | |
6120 | } | |
6121 | ||
6122 | /* When linking with V1.2 and V1.3 objects together the output is V1.2. | |
6123 | and perf ext1 and DIV are mergerd to perf ext1. */ | |
6124 | if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2) | |
6125 | { | |
6126 | elf_elfheader (obfd)->e_flags = | |
6127 | (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6128 | | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6129 | | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6130 | ? E_NDS32_HAS_EXT_INST : 0) | |
6131 | | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6132 | ? E_NDS32_HAS_EXT_INST : 0) | |
6133 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
6134 | | ((in_version > out_version) ? out_version : in_version); | |
6135 | } | |
6136 | else | |
6137 | { | |
6138 | if (in_version != out_version) | |
6139 | (*_bfd_error_handler) (_("%B: warning: Incompatible elf-versions %s and %s."), | |
6140 | ibfd, nds32_elfver_strtab[out_version], | |
6141 | nds32_elfver_strtab[in_version]); | |
6142 | ||
6143 | elf_elfheader (obfd)->e_flags = in_flags | out_flags | |
6144 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
6145 | | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config) | |
6146 | | (in_version > out_version ? out_version : in_version); | |
6147 | } | |
6148 | ||
6149 | return TRUE; | |
6150 | } | |
6151 | ||
6152 | /* Display the flags field. */ | |
6153 | ||
6154 | static bfd_boolean | |
6155 | nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6156 | { | |
6157 | FILE *file = (FILE *) ptr; | |
6158 | ||
6159 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6160 | ||
6161 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6162 | ||
6163 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); | |
6164 | ||
6165 | switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH) | |
6166 | { | |
6167 | default: | |
6168 | case E_N1_ARCH: | |
6169 | fprintf (file, _(": n1 instructions")); | |
6170 | break; | |
6171 | case E_N1H_ARCH: | |
6172 | fprintf (file, _(": n1h instructions")); | |
6173 | break; | |
6174 | } | |
6175 | ||
6176 | fputc ('\n', file); | |
6177 | ||
6178 | return TRUE; | |
6179 | } | |
6180 | ||
6181 | static unsigned int | |
6182 | nds32_elf_action_discarded (asection *sec) | |
6183 | { | |
6184 | ||
6185 | if (strncmp | |
6186 | (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0) | |
6187 | return 0; | |
6188 | ||
6189 | return _bfd_elf_default_action_discarded (sec); | |
6190 | } | |
6191 | ||
6192 | static asection * | |
6193 | nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
6194 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h, | |
6195 | Elf_Internal_Sym *sym) | |
6196 | { | |
6197 | if (h != NULL) | |
6198 | switch (ELF32_R_TYPE (rel->r_info)) | |
6199 | { | |
6200 | case R_NDS32_GNU_VTINHERIT: | |
6201 | case R_NDS32_GNU_VTENTRY: | |
6202 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6203 | case R_NDS32_RELA_GNU_VTENTRY: | |
6204 | return NULL; | |
6205 | } | |
6206 | ||
6207 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
6208 | } | |
6209 | ||
6210 | static bfd_boolean | |
6211 | nds32_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, | |
6212 | const Elf_Internal_Rela *relocs) | |
6213 | { | |
6214 | /* Update the got entry reference counts for the section being removed. */ | |
6215 | Elf_Internal_Shdr *symtab_hdr; | |
6216 | struct elf_link_hash_entry **sym_hashes; | |
6217 | bfd_signed_vma *local_got_refcounts; | |
6218 | const Elf_Internal_Rela *rel, *relend; | |
6219 | ||
6220 | elf_section_data (sec)->local_dynrel = NULL; | |
6221 | ||
6222 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6223 | sym_hashes = elf_sym_hashes (abfd); | |
6224 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6225 | ||
6226 | relend = relocs + sec->reloc_count; | |
6227 | for (rel = relocs; rel < relend; rel++) | |
6228 | { | |
6229 | unsigned long r_symndx; | |
6230 | struct elf_link_hash_entry *h = NULL; | |
6231 | ||
6232 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6233 | if (r_symndx >= symtab_hdr->sh_info) | |
6234 | { | |
6235 | /* External symbol. */ | |
6236 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6237 | while (h->root.type == bfd_link_hash_indirect | |
6238 | || h->root.type == bfd_link_hash_warning) | |
6239 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6240 | } | |
6241 | ||
6242 | switch (ELF32_R_TYPE (rel->r_info)) | |
6243 | { | |
6244 | case R_NDS32_GOT_HI20: | |
6245 | case R_NDS32_GOT_LO12: | |
6246 | case R_NDS32_GOT_LO15: | |
6247 | case R_NDS32_GOT_LO19: | |
6248 | case R_NDS32_GOT17S2_RELA: | |
6249 | case R_NDS32_GOT15S2_RELA: | |
6250 | case R_NDS32_GOTOFF: | |
6251 | case R_NDS32_GOTOFF_HI20: | |
6252 | case R_NDS32_GOTOFF_LO12: | |
6253 | case R_NDS32_GOTOFF_LO15: | |
6254 | case R_NDS32_GOTOFF_LO19: | |
6255 | case R_NDS32_GOT20: | |
6256 | case R_NDS32_GOTPC_HI20: | |
6257 | case R_NDS32_GOTPC_LO12: | |
6258 | case R_NDS32_GOTPC20: | |
6259 | if (h != NULL) | |
6260 | { | |
6261 | if (h->got.refcount > 0) | |
6262 | h->got.refcount--; | |
6263 | } | |
6264 | else | |
6265 | { | |
6266 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) | |
6267 | local_got_refcounts[r_symndx]--; | |
6268 | } | |
6269 | break; | |
6270 | ||
6271 | case R_NDS32_16_RELA: | |
6272 | case R_NDS32_20_RELA: | |
6273 | case R_NDS32_5_RELA: | |
6274 | case R_NDS32_32_RELA: | |
6275 | case R_NDS32_HI20_RELA: | |
6276 | case R_NDS32_LO12S3_RELA: | |
6277 | case R_NDS32_LO12S2_RELA: | |
6278 | case R_NDS32_LO12S2_DP_RELA: | |
6279 | case R_NDS32_LO12S2_SP_RELA: | |
6280 | case R_NDS32_LO12S1_RELA: | |
6281 | case R_NDS32_LO12S0_RELA: | |
6282 | case R_NDS32_LO12S0_ORI_RELA: | |
6283 | case R_NDS32_SDA16S3_RELA: | |
6284 | case R_NDS32_SDA17S2_RELA: | |
6285 | case R_NDS32_SDA18S1_RELA: | |
6286 | case R_NDS32_SDA19S0_RELA: | |
6287 | case R_NDS32_SDA15S3_RELA: | |
6288 | case R_NDS32_SDA15S2_RELA: | |
6289 | case R_NDS32_SDA12S2_DP_RELA: | |
6290 | case R_NDS32_SDA12S2_SP_RELA: | |
6291 | case R_NDS32_SDA15S1_RELA: | |
6292 | case R_NDS32_SDA15S0_RELA: | |
6293 | case R_NDS32_SDA_FP7U2_RELA: | |
6294 | case R_NDS32_15_PCREL_RELA: | |
6295 | case R_NDS32_17_PCREL_RELA: | |
6296 | case R_NDS32_25_PCREL_RELA: | |
6297 | if (h != NULL) | |
6298 | { | |
6299 | struct elf_nds32_link_hash_entry *eh; | |
6300 | struct elf_nds32_dyn_relocs **pp; | |
6301 | struct elf_nds32_dyn_relocs *p; | |
6302 | ||
0e1862bb | 6303 | if (!bfd_link_pic (info) && h->plt.refcount > 0) |
35c08157 KLC |
6304 | h->plt.refcount -= 1; |
6305 | ||
6306 | eh = (struct elf_nds32_link_hash_entry *) h; | |
6307 | ||
6308 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6309 | if (p->sec == sec) | |
6310 | { | |
6311 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA | |
6312 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA | |
6313 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA) | |
6314 | p->pc_count -= 1; | |
6315 | p->count -= 1; | |
6316 | if (p->count == 0) | |
6317 | *pp = p->next; | |
6318 | break; | |
6319 | } | |
6320 | } | |
6321 | break; | |
6322 | ||
6323 | case R_NDS32_9_PLTREL: | |
6324 | case R_NDS32_25_PLTREL: | |
6325 | if (h != NULL) | |
6326 | { | |
6327 | if (h->plt.refcount > 0) | |
6328 | h->plt.refcount--; | |
6329 | } | |
6330 | break; | |
6331 | ||
6332 | default: | |
6333 | break; | |
6334 | } | |
6335 | } | |
6336 | ||
6337 | return TRUE; | |
6338 | } | |
6339 | ||
6340 | /* Look through the relocs for a section during the first phase. | |
6341 | Since we don't do .gots or .plts, we just need to consider the | |
6342 | virtual table relocs for gc. */ | |
6343 | ||
6344 | static bfd_boolean | |
6345 | nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
6346 | asection *sec, const Elf_Internal_Rela *relocs) | |
6347 | { | |
6348 | Elf_Internal_Shdr *symtab_hdr; | |
6349 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
6350 | const Elf_Internal_Rela *rel; | |
6351 | const Elf_Internal_Rela *rel_end; | |
6352 | struct elf_nds32_link_hash_table *htab; | |
6353 | bfd *dynobj; | |
6354 | asection *sreloc = NULL; | |
6355 | ||
0e1862bb | 6356 | if (bfd_link_relocatable (info)) |
35c08157 KLC |
6357 | return TRUE; |
6358 | ||
6359 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6360 | sym_hashes = elf_sym_hashes (abfd); | |
6361 | sym_hashes_end = | |
6362 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
6363 | if (!elf_bad_symtab (abfd)) | |
6364 | sym_hashes_end -= symtab_hdr->sh_info; | |
6365 | ||
6366 | htab = nds32_elf_hash_table (info); | |
6367 | dynobj = htab->root.dynobj; | |
6368 | ||
6369 | rel_end = relocs + sec->reloc_count; | |
6370 | for (rel = relocs; rel < rel_end; rel++) | |
6371 | { | |
6372 | enum elf_nds32_reloc_type r_type; | |
6373 | struct elf_link_hash_entry *h; | |
6374 | unsigned long r_symndx; | |
1c8f6a4d | 6375 | int tls_type, old_tls_type; |
35c08157 KLC |
6376 | |
6377 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6378 | r_type = ELF32_R_TYPE (rel->r_info); | |
6379 | if (r_symndx < symtab_hdr->sh_info) | |
6380 | h = NULL; | |
6381 | else | |
6382 | { | |
6383 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6384 | while (h->root.type == bfd_link_hash_indirect | |
6385 | || h->root.type == bfd_link_hash_warning) | |
6386 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6387 | } | |
6388 | ||
1c8f6a4d KLC |
6389 | /* Some relocs require a global offset table. We create |
6390 | got section here, since these relocation need got section | |
6391 | and it is not created yet. */ | |
35c08157 KLC |
6392 | if (htab->sgot == NULL) |
6393 | { | |
6394 | switch (r_type) | |
6395 | { | |
6396 | case R_NDS32_GOT_HI20: | |
6397 | case R_NDS32_GOT_LO12: | |
6398 | case R_NDS32_GOT_LO15: | |
6399 | case R_NDS32_GOT_LO19: | |
6400 | case R_NDS32_GOT17S2_RELA: | |
6401 | case R_NDS32_GOT15S2_RELA: | |
6402 | case R_NDS32_GOTOFF: | |
6403 | case R_NDS32_GOTOFF_HI20: | |
6404 | case R_NDS32_GOTOFF_LO12: | |
6405 | case R_NDS32_GOTOFF_LO15: | |
6406 | case R_NDS32_GOTOFF_LO19: | |
6407 | case R_NDS32_GOTPC20: | |
6408 | case R_NDS32_GOTPC_HI20: | |
6409 | case R_NDS32_GOTPC_LO12: | |
6410 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6411 | case R_NDS32_TLS_IE_HI20: |
6412 | case R_NDS32_TLS_IE_LO12S2: | |
35c08157 KLC |
6413 | if (dynobj == NULL) |
6414 | htab->root.dynobj = dynobj = abfd; | |
6415 | if (!create_got_section (dynobj, info)) | |
6416 | return FALSE; | |
6417 | break; | |
6418 | ||
6419 | default: | |
6420 | break; | |
6421 | } | |
6422 | } | |
6423 | ||
6424 | switch ((int) r_type) | |
6425 | { | |
6426 | case R_NDS32_GOT_HI20: | |
6427 | case R_NDS32_GOT_LO12: | |
6428 | case R_NDS32_GOT_LO15: | |
6429 | case R_NDS32_GOT_LO19: | |
6430 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6431 | case R_NDS32_TLS_IE_HI20: |
6432 | case R_NDS32_TLS_IE_LO12S2: | |
6433 | switch (r_type) | |
6434 | { | |
6435 | case R_NDS32_TLS_IE_HI20: | |
6436 | case R_NDS32_TLS_IE_LO12S2: | |
6437 | tls_type = GOT_TLS_IE; | |
6438 | break; | |
6439 | default: | |
6440 | tls_type = GOT_NORMAL; | |
6441 | break; | |
6442 | } | |
35c08157 | 6443 | if (h != NULL) |
1c8f6a4d KLC |
6444 | { |
6445 | old_tls_type = elf32_nds32_hash_entry (h)->tls_type; | |
6446 | h->got.refcount += 1; | |
6447 | } | |
35c08157 KLC |
6448 | else |
6449 | { | |
6450 | bfd_signed_vma *local_got_refcounts; | |
6451 | ||
6452 | /* This is a global offset table entry for a local | |
6453 | symbol. */ | |
6454 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6455 | if (local_got_refcounts == NULL) | |
6456 | { | |
6457 | bfd_size_type size; | |
6458 | ||
6459 | size = symtab_hdr->sh_info; | |
6460 | size *= sizeof (bfd_signed_vma); | |
6461 | local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size); | |
6462 | if (local_got_refcounts == NULL) | |
6463 | return FALSE; | |
6464 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
6465 | } | |
6466 | local_got_refcounts[r_symndx] += 1; | |
1c8f6a4d | 6467 | old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx]; |
35c08157 | 6468 | } |
35c08157 | 6469 | |
1c8f6a4d KLC |
6470 | /* We will already have issued an error message if there |
6471 | is a TLS/non-TLS mismatch, based on the symbol | |
6472 | type. So just combine any TLS types needed. */ | |
6473 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
6474 | && tls_type != GOT_NORMAL) | |
6475 | tls_type |= old_tls_type; | |
6476 | ||
6477 | if (old_tls_type != tls_type) | |
6478 | { | |
6479 | if (h != NULL) | |
6480 | elf32_nds32_hash_entry (h)->tls_type = tls_type; | |
6481 | else | |
6482 | elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type; | |
6483 | } | |
6484 | break; | |
6485 | case R_NDS32_9_PLTREL: | |
35c08157 KLC |
6486 | case R_NDS32_25_PLTREL: |
6487 | case R_NDS32_PLTREL_HI20: | |
6488 | case R_NDS32_PLTREL_LO12: | |
6489 | case R_NDS32_PLT_GOTREL_HI20: | |
6490 | case R_NDS32_PLT_GOTREL_LO12: | |
6491 | case R_NDS32_PLT_GOTREL_LO15: | |
6492 | case R_NDS32_PLT_GOTREL_LO19: | |
6493 | case R_NDS32_PLT_GOTREL_LO20: | |
6494 | ||
6495 | /* This symbol requires a procedure linkage table entry. We | |
6496 | actually build the entry in adjust_dynamic_symbol, | |
6497 | because this might be a case of linking PIC code without | |
6498 | linking in any dynamic objects, in which case we don't | |
6499 | need to generate a procedure linkage table after all. */ | |
6500 | ||
6501 | /* If this is a local symbol, we resolve it directly without | |
6502 | creating a procedure linkage table entry. */ | |
6503 | if (h == NULL) | |
6504 | continue; | |
6505 | ||
6506 | if (h->forced_local) | |
6507 | break; | |
6508 | ||
1c8f6a4d | 6509 | elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL; |
35c08157 KLC |
6510 | h->needs_plt = 1; |
6511 | h->plt.refcount += 1; | |
6512 | break; | |
6513 | ||
6514 | case R_NDS32_16_RELA: | |
6515 | case R_NDS32_20_RELA: | |
6516 | case R_NDS32_5_RELA: | |
6517 | case R_NDS32_32_RELA: | |
6518 | case R_NDS32_HI20_RELA: | |
6519 | case R_NDS32_LO12S3_RELA: | |
6520 | case R_NDS32_LO12S2_RELA: | |
6521 | case R_NDS32_LO12S2_DP_RELA: | |
6522 | case R_NDS32_LO12S2_SP_RELA: | |
6523 | case R_NDS32_LO12S1_RELA: | |
6524 | case R_NDS32_LO12S0_RELA: | |
6525 | case R_NDS32_LO12S0_ORI_RELA: | |
6526 | case R_NDS32_SDA16S3_RELA: | |
6527 | case R_NDS32_SDA17S2_RELA: | |
6528 | case R_NDS32_SDA18S1_RELA: | |
6529 | case R_NDS32_SDA19S0_RELA: | |
6530 | case R_NDS32_SDA15S3_RELA: | |
6531 | case R_NDS32_SDA15S2_RELA: | |
6532 | case R_NDS32_SDA12S2_DP_RELA: | |
6533 | case R_NDS32_SDA12S2_SP_RELA: | |
6534 | case R_NDS32_SDA15S1_RELA: | |
6535 | case R_NDS32_SDA15S0_RELA: | |
6536 | case R_NDS32_SDA_FP7U2_RELA: | |
6537 | case R_NDS32_15_PCREL_RELA: | |
6538 | case R_NDS32_17_PCREL_RELA: | |
6539 | case R_NDS32_25_PCREL_RELA: | |
6540 | ||
0e1862bb | 6541 | if (h != NULL && !bfd_link_pic (info)) |
35c08157 KLC |
6542 | { |
6543 | h->non_got_ref = 1; | |
6544 | h->plt.refcount += 1; | |
6545 | } | |
6546 | ||
6547 | /* If we are creating a shared library, and this is a reloc against | |
6548 | a global symbol, or a non PC relative reloc against a local | |
6549 | symbol, then we need to copy the reloc into the shared library. | |
6550 | However, if we are linking with -Bsymbolic, we do not need to | |
6551 | copy a reloc against a global symbol which is defined in an | |
6552 | object we are including in the link (i.e., DEF_REGULAR is set). | |
6553 | At this point we have not seen all the input files, so it is | |
6554 | possible that DEF_REGULAR is not set now but will be set later | |
6555 | (it is never cleared). We account for that possibility below by | |
6556 | storing information in the dyn_relocs field of the hash table | |
6557 | entry. A similar situation occurs when creating shared libraries | |
6558 | and symbol visibility changes render the symbol local. | |
6559 | ||
6560 | If on the other hand, we are creating an executable, we may need | |
6561 | to keep relocations for symbols satisfied by a dynamic library | |
6562 | if we manage to avoid copy relocs for the symbol. */ | |
0e1862bb | 6563 | if ((bfd_link_pic (info) |
35c08157 KLC |
6564 | && (sec->flags & SEC_ALLOC) != 0 |
6565 | && ((r_type != R_NDS32_25_PCREL_RELA | |
6566 | && r_type != R_NDS32_15_PCREL_RELA | |
6567 | && r_type != R_NDS32_17_PCREL_RELA | |
6568 | && !(r_type == R_NDS32_32_RELA | |
6569 | && strcmp (sec->name, ".eh_frame") == 0)) | |
6570 | || (h != NULL | |
6571 | && (!info->symbolic | |
6572 | || h->root.type == bfd_link_hash_defweak | |
6573 | || !h->def_regular)))) | |
0e1862bb | 6574 | || (!bfd_link_pic (info) |
35c08157 KLC |
6575 | && (sec->flags & SEC_ALLOC) != 0 |
6576 | && h != NULL | |
6577 | && (h->root.type == bfd_link_hash_defweak | |
6578 | || !h->def_regular))) | |
6579 | { | |
6580 | struct elf_nds32_dyn_relocs *p; | |
6581 | struct elf_nds32_dyn_relocs **head; | |
6582 | ||
6583 | if (dynobj == NULL) | |
6584 | htab->root.dynobj = dynobj = abfd; | |
6585 | ||
6586 | /* When creating a shared object, we must copy these | |
6587 | relocs into the output file. We create a reloc | |
6588 | section in dynobj and make room for the reloc. */ | |
6589 | if (sreloc == NULL) | |
6590 | { | |
6591 | const char *name; | |
6592 | ||
6593 | name = bfd_elf_string_from_elf_section | |
6594 | (abfd, elf_elfheader (abfd)->e_shstrndx, | |
6595 | elf_section_data (sec)->rela.hdr->sh_name); | |
6596 | if (name == NULL) | |
6597 | return FALSE; | |
6598 | ||
6599 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
6600 | && strcmp (bfd_get_section_name (abfd, sec), | |
6601 | name + 5) == 0); | |
6602 | ||
6603 | sreloc = bfd_get_section_by_name (dynobj, name); | |
6604 | if (sreloc == NULL) | |
6605 | { | |
6606 | flagword flags; | |
6607 | ||
6608 | sreloc = bfd_make_section (dynobj, name); | |
6609 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
6610 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
6611 | if ((sec->flags & SEC_ALLOC) != 0) | |
6612 | flags |= SEC_ALLOC | SEC_LOAD; | |
6613 | if (sreloc == NULL | |
6614 | || !bfd_set_section_flags (dynobj, sreloc, flags) | |
6615 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
6616 | return FALSE; | |
6617 | ||
6618 | elf_section_type (sreloc) = SHT_RELA; | |
6619 | } | |
6620 | elf_section_data (sec)->sreloc = sreloc; | |
6621 | } | |
6622 | ||
6623 | /* If this is a global symbol, we count the number of | |
6624 | relocations we need for this symbol. */ | |
6625 | if (h != NULL) | |
6626 | head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs; | |
6627 | else | |
6628 | { | |
6629 | asection *s; | |
6630 | ||
6631 | Elf_Internal_Sym *isym; | |
6632 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); | |
6633 | if (isym == NULL) | |
6634 | return FALSE; | |
6635 | ||
6636 | /* Track dynamic relocs needed for local syms too. */ | |
6637 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6638 | if (s == NULL) | |
6639 | return FALSE; | |
6640 | ||
6641 | head = ((struct elf_nds32_dyn_relocs **) | |
6642 | &elf_section_data (s)->local_dynrel); | |
6643 | } | |
6644 | ||
6645 | p = *head; | |
6646 | if (p == NULL || p->sec != sec) | |
6647 | { | |
6648 | bfd_size_type amt = sizeof (*p); | |
6649 | p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt); | |
6650 | if (p == NULL) | |
6651 | return FALSE; | |
6652 | p->next = *head; | |
6653 | *head = p; | |
6654 | p->sec = sec; | |
6655 | p->count = 0; | |
6656 | p->pc_count = 0; | |
6657 | } | |
6658 | ||
6659 | p->count += 1; | |
6660 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA | |
6661 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA | |
6662 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA) | |
6663 | p->pc_count += 1; | |
6664 | } | |
6665 | break; | |
6666 | ||
6667 | /* This relocation describes the C++ object vtable hierarchy. | |
6668 | Reconstruct it for later use during GC. */ | |
6669 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6670 | case R_NDS32_GNU_VTINHERIT: | |
6671 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
6672 | return FALSE; | |
6673 | break; | |
6674 | ||
6675 | /* This relocation describes which C++ vtable entries are actually | |
6676 | used. Record for later use during GC. */ | |
6677 | case R_NDS32_GNU_VTENTRY: | |
6678 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
6679 | return FALSE; | |
6680 | break; | |
6681 | case R_NDS32_RELA_GNU_VTENTRY: | |
6682 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
6683 | return FALSE; | |
6684 | break; | |
6685 | } | |
6686 | } | |
6687 | ||
6688 | return TRUE; | |
6689 | } | |
6690 | ||
6691 | /* Write VAL in uleb128 format to P, returning a pointer to the | |
6692 | following byte. | |
6693 | This code is copied from elf-attr.c. */ | |
6694 | ||
6695 | static bfd_byte * | |
6696 | write_uleb128 (bfd_byte *p, unsigned int val) | |
6697 | { | |
6698 | bfd_byte c; | |
6699 | do | |
6700 | { | |
6701 | c = val & 0x7f; | |
6702 | val >>= 7; | |
6703 | if (val) | |
6704 | c |= 0x80; | |
6705 | *(p++) = c; | |
6706 | } | |
6707 | while (val); | |
6708 | return p; | |
6709 | } | |
6710 | ||
6711 | static bfd_signed_vma | |
6712 | calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
6713 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr, | |
6714 | int *pic_ext_target) | |
6715 | { | |
6716 | bfd_signed_vma foff; | |
6717 | bfd_vma symval, addend; | |
6718 | asection *sym_sec; | |
6719 | ||
6720 | /* Get the value of the symbol referred to by the reloc. */ | |
6721 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6722 | { | |
6723 | Elf_Internal_Sym *isym; | |
6724 | ||
6725 | /* A local symbol. */ | |
6726 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6727 | ||
6728 | if (isym->st_shndx == SHN_UNDEF) | |
6729 | sym_sec = bfd_und_section_ptr; | |
6730 | else if (isym->st_shndx == SHN_ABS) | |
6731 | sym_sec = bfd_abs_section_ptr; | |
6732 | else if (isym->st_shndx == SHN_COMMON) | |
6733 | sym_sec = bfd_com_section_ptr; | |
6734 | else | |
6735 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6736 | symval = isym->st_value + sym_sec->output_section->vma | |
6737 | + sym_sec->output_offset; | |
6738 | } | |
6739 | else | |
6740 | { | |
6741 | unsigned long indx; | |
6742 | struct elf_link_hash_entry *h; | |
6743 | bfd *owner; | |
6744 | ||
6745 | /* An external symbol. */ | |
6746 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6747 | h = elf_sym_hashes (abfd)[indx]; | |
6748 | BFD_ASSERT (h != NULL); | |
6749 | ||
6750 | if (h->root.type != bfd_link_hash_defined | |
6751 | && h->root.type != bfd_link_hash_defweak) | |
6752 | /* This appears to be a reference to an undefined | |
6753 | symbol. Just ignore it--it will be caught by the | |
6754 | regular reloc processing. */ | |
6755 | return 0; | |
6756 | owner = h->root.u.def.section->owner; | |
6757 | if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC)) | |
6758 | *pic_ext_target = 1; | |
6759 | ||
6760 | if (h->root.u.def.section->flags & SEC_MERGE) | |
6761 | { | |
6762 | sym_sec = h->root.u.def.section; | |
6763 | symval = _bfd_merged_section_offset (abfd, &sym_sec, | |
6764 | elf_section_data (sym_sec)->sec_info, | |
6765 | h->root.u.def.value); | |
6766 | symval = symval + sym_sec->output_section->vma | |
6767 | + sym_sec->output_offset; | |
6768 | } | |
6769 | else | |
6770 | symval = (h->root.u.def.value | |
6771 | + h->root.u.def.section->output_section->vma | |
6772 | + h->root.u.def.section->output_offset); | |
6773 | } | |
6774 | ||
6775 | addend = irel->r_addend; | |
6776 | ||
6777 | foff = (symval + addend | |
6778 | - (irel->r_offset + sec->output_section->vma + sec->output_offset)); | |
6779 | return foff; | |
6780 | } | |
6781 | ||
6782 | static bfd_vma | |
6783 | calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
6784 | Elf_Internal_Sym *isymbuf, | |
6785 | Elf_Internal_Rela *irel, | |
6786 | Elf_Internal_Shdr *symtab_hdr) | |
6787 | { | |
6788 | bfd_vma symval; | |
6789 | ||
6790 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6791 | { | |
6792 | Elf_Internal_Sym *isym; | |
6793 | asection *sym_sec; | |
6794 | /* A local symbol. */ | |
6795 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6796 | ||
6797 | if (isym->st_shndx == SHN_UNDEF) | |
6798 | sym_sec = bfd_und_section_ptr; | |
6799 | else if (isym->st_shndx == SHN_ABS) | |
6800 | sym_sec = bfd_abs_section_ptr; | |
6801 | else if (isym->st_shndx == SHN_COMMON) | |
6802 | sym_sec = bfd_com_section_ptr; | |
6803 | else | |
6804 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6805 | symval = isym->st_value + sym_sec->output_section->vma | |
6806 | + sym_sec->output_offset; | |
6807 | } | |
6808 | else | |
6809 | { | |
6810 | unsigned long indx; | |
6811 | struct elf_link_hash_entry *h; | |
6812 | struct elf_nds32_link_hash_table *htab; | |
6813 | asection *splt; | |
6814 | ||
6815 | /* An external symbol. */ | |
6816 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6817 | h = elf_sym_hashes (abfd)[indx]; | |
6818 | BFD_ASSERT (h != NULL); | |
6819 | htab = nds32_elf_hash_table (link_info); | |
6820 | splt = htab->splt; | |
6821 | ||
6822 | while (h->root.type == bfd_link_hash_indirect | |
6823 | || h->root.type == bfd_link_hash_warning) | |
6824 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6825 | ||
6826 | if (h->plt.offset == (bfd_vma) - 1) | |
6827 | { | |
6828 | if (h->root.type != bfd_link_hash_defined | |
6829 | && h->root.type != bfd_link_hash_defweak) | |
6830 | /* This appears to be a reference to an undefined | |
6831 | * symbol. Just ignore it--it will be caught by the | |
6832 | * regular reloc processing. */ | |
6833 | return 0; | |
6834 | symval = (h->root.u.def.value | |
6835 | + h->root.u.def.section->output_section->vma | |
6836 | + h->root.u.def.section->output_offset); | |
6837 | } | |
6838 | else | |
6839 | symval = splt->output_section->vma + h->plt.offset; | |
6840 | } | |
6841 | ||
6842 | return symval; | |
6843 | } | |
6844 | ||
6845 | static bfd_signed_vma | |
6846 | calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
6847 | Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel, | |
6848 | Elf_Internal_Shdr *symtab_hdr) | |
6849 | { | |
6850 | bfd_vma foff; | |
6851 | if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
6852 | symtab_hdr)) == 0) | |
6853 | return 0; | |
6854 | else | |
6855 | return foff - (irel->r_offset | |
6856 | + sec->output_section->vma + sec->output_offset); | |
6857 | } | |
6858 | \f | |
6859 | /* Convert a 32-bit instruction to 16-bit one. | |
6860 | INSN is the input 32-bit instruction, INSN16 is the output 16-bit | |
6861 | instruction. If INSN_TYPE is not NULL, it the CGEN instruction | |
6862 | type of INSN16. Return 1 if successful. */ | |
6863 | ||
6864 | static int | |
6865 | nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
6866 | int *pinsn_type) | |
6867 | { | |
6868 | uint16_t insn16 = 0; | |
6cae483a | 6869 | int insn_type = 0; |
35c08157 KLC |
6870 | unsigned long mach = bfd_get_mach (abfd); |
6871 | ||
6872 | if (N32_SH5 (insn) != 0) | |
6873 | return 0; | |
6874 | ||
6875 | switch (N32_SUB5 (insn)) | |
6876 | { | |
6877 | case N32_ALU1_ADD_SLLI: | |
6878 | case N32_ALU1_ADD_SRLI: | |
6879 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6880 | { | |
6881 | insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn), | |
6882 | N32_RB5 (insn)); | |
6883 | insn_type = NDS32_INSN_ADD333; | |
6884 | } | |
6885 | else if (N32_IS_RT4 (insn)) | |
6886 | { | |
6887 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6888 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn)); | |
6889 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6890 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn)); | |
6891 | insn_type = NDS32_INSN_ADD45; | |
6892 | } | |
6893 | break; | |
6894 | ||
6895 | case N32_ALU1_SUB_SLLI: | |
6896 | case N32_ALU1_SUB_SRLI: | |
6897 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6898 | { | |
6899 | insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn), | |
6900 | N32_RB5 (insn)); | |
6901 | insn_type = NDS32_INSN_SUB333; | |
6902 | } | |
6903 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6904 | { | |
6905 | insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn)); | |
6906 | insn_type = NDS32_INSN_SUB45; | |
6907 | } | |
6908 | break; | |
6909 | ||
6910 | case N32_ALU1_AND_SLLI: | |
6911 | case N32_ALU1_AND_SRLI: | |
6912 | /* and $rt, $rt, $rb -> and33 for v3, v3m. */ | |
6913 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6914 | && N32_IS_RB3 (insn)) | |
6915 | { | |
6916 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6917 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn)); | |
6918 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6919 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn)); | |
6920 | if (insn16) | |
6921 | insn_type = NDS32_INSN_AND33; | |
6922 | } | |
6923 | break; | |
6924 | ||
6925 | case N32_ALU1_XOR_SLLI: | |
6926 | case N32_ALU1_XOR_SRLI: | |
6927 | /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */ | |
6928 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6929 | && N32_IS_RB3 (insn)) | |
6930 | { | |
6931 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6932 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6933 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6934 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6935 | if (insn16) | |
6936 | insn_type = NDS32_INSN_XOR33; | |
6937 | } | |
6938 | break; | |
6939 | ||
6940 | case N32_ALU1_OR_SLLI: | |
6941 | case N32_ALU1_OR_SRLI: | |
6942 | /* or $rt, $rt, $rb -> or33 for v3, v3m. */ | |
6943 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6944 | && N32_IS_RB3 (insn)) | |
6945 | { | |
6946 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6947 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6948 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6949 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6950 | if (insn16) | |
6951 | insn_type = NDS32_INSN_OR33; | |
6952 | } | |
6953 | break; | |
6954 | case N32_ALU1_NOR: | |
6955 | /* nor $rt, $ra, $ra -> not33 for v3, v3m. */ | |
6956 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn) | |
6957 | && N32_RA5 (insn) == N32_RB5 (insn)) | |
6958 | { | |
6959 | insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn)); | |
6960 | insn_type = NDS32_INSN_NOT33; | |
6961 | } | |
6962 | break; | |
6963 | case N32_ALU1_SRAI: | |
6964 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6965 | { | |
6966 | insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6967 | insn_type = NDS32_INSN_SRAI45; | |
6968 | } | |
6969 | break; | |
6970 | ||
6971 | case N32_ALU1_SRLI: | |
6972 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6973 | { | |
6974 | insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6975 | insn_type = NDS32_INSN_SRLI45; | |
6976 | } | |
6977 | break; | |
6978 | ||
6979 | case N32_ALU1_SLLI: | |
6980 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8) | |
6981 | { | |
6982 | insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn), | |
6983 | N32_UB5 (insn)); | |
6984 | insn_type = NDS32_INSN_SLLI333; | |
6985 | } | |
6986 | break; | |
6987 | ||
6988 | case N32_ALU1_ZEH: | |
6989 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6990 | { | |
6991 | insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
6992 | insn_type = NDS32_INSN_ZEH33; | |
6993 | } | |
6994 | break; | |
6995 | ||
6996 | case N32_ALU1_SEB: | |
6997 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6998 | { | |
6999 | insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
7000 | insn_type = NDS32_INSN_SEB33; | |
7001 | } | |
7002 | break; | |
7003 | ||
7004 | case N32_ALU1_SEH: | |
7005 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
7006 | { | |
7007 | insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
7008 | insn_type = NDS32_INSN_SEH33; | |
7009 | } | |
7010 | break; | |
7011 | ||
7012 | case N32_ALU1_SLT: | |
7013 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
7014 | { | |
7015 | /* Implicit r15. */ | |
7016 | insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn)); | |
7017 | insn_type = NDS32_INSN_SLT45; | |
7018 | } | |
7019 | break; | |
7020 | ||
7021 | case N32_ALU1_SLTS: | |
7022 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
7023 | { | |
7024 | /* Implicit r15. */ | |
7025 | insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn)); | |
7026 | insn_type = NDS32_INSN_SLTS45; | |
7027 | } | |
7028 | break; | |
7029 | } | |
7030 | ||
7031 | if ((insn16 & 0x8000) == 0) | |
7032 | return 0; | |
7033 | ||
7034 | if (pinsn16) | |
7035 | *pinsn16 = insn16; | |
7036 | if (pinsn_type) | |
7037 | *pinsn_type = insn_type; | |
7038 | return 1; | |
7039 | } | |
7040 | ||
7041 | static int | |
7042 | nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
7043 | int *pinsn_type) | |
7044 | { | |
7045 | uint16_t insn16 = 0; | |
7046 | int insn_type; | |
7047 | unsigned long mach = bfd_get_mach (abfd); | |
7048 | ||
7049 | /* TODO: bset, bclr, btgl, btst. */ | |
7050 | if (__GF (insn, 6, 4) != 0) | |
7051 | return 0; | |
7052 | ||
7053 | switch (N32_IMMU (insn, 6)) | |
7054 | { | |
7055 | case N32_ALU2_MUL: | |
7056 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7057 | && N32_IS_RB3 (insn)) | |
7058 | { | |
7059 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
7060 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn)); | |
7061 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
7062 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn)); | |
7063 | if (insn16) | |
7064 | insn_type = NDS32_INSN_MUL33; | |
7065 | } | |
7066 | } | |
7067 | ||
7068 | if ((insn16 & 0x8000) == 0) | |
7069 | return 0; | |
7070 | ||
7071 | if (pinsn16) | |
7072 | *pinsn16 = insn16; | |
7073 | if (pinsn_type) | |
7074 | *pinsn_type = insn_type; | |
7075 | return 1; | |
7076 | } | |
7077 | ||
7078 | int | |
7079 | nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
7080 | int *pinsn_type) | |
7081 | { | |
7082 | int op6; | |
7083 | uint16_t insn16 = 0; | |
7084 | int insn_type; | |
7085 | unsigned long mach = bfd_get_mach (abfd); | |
7086 | ||
7087 | /* Decode 32-bit instruction. */ | |
7088 | if (insn & 0x80000000) | |
7089 | { | |
7090 | /* Not 32-bit insn. */ | |
7091 | return 0; | |
7092 | } | |
7093 | ||
7094 | op6 = N32_OP6 (insn); | |
7095 | ||
7096 | /* Convert it to 16-bit instruction. */ | |
7097 | switch (op6) | |
7098 | { | |
7099 | case N32_OP6_MOVI: | |
7100 | if (IS_WITHIN_S (N32_IMM20S (insn), 5)) | |
7101 | { | |
7102 | insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn)); | |
7103 | insn_type = NDS32_INSN_MOVI55; | |
7104 | } | |
7105 | else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16 | |
7106 | && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn)) | |
7107 | { | |
7108 | insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn), | |
7109 | N32_IMM20S (insn) - 16); | |
7110 | insn_type = NDS32_INSN_MOVPI45; | |
7111 | } | |
7112 | break; | |
7113 | ||
7114 | case N32_OP6_ADDI: | |
7115 | if (N32_IMM15S (insn) == 0) | |
7116 | { | |
7117 | /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp', | |
7118 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
7119 | if (mach <= MACH_V2 | |
7120 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
7121 | { | |
7122 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
7123 | insn_type = NDS32_INSN_MOV55; | |
7124 | } | |
7125 | } | |
7126 | else if (N32_IMM15S (insn) > 0) | |
7127 | { | |
7128 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8) | |
7129 | { | |
7130 | insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn), | |
7131 | N32_IMM15S (insn)); | |
7132 | insn_type = NDS32_INSN_ADDI333; | |
7133 | } | |
7134 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
7135 | && N32_IMM15S (insn) < 32) | |
7136 | { | |
7137 | insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn)); | |
7138 | insn_type = NDS32_INSN_ADDI45; | |
7139 | } | |
7140 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
7141 | && N32_RT5 (insn) == N32_RA5 (insn) | |
7142 | && N32_IMM15S (insn) < 512) | |
7143 | { | |
7144 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
7145 | insn_type = NDS32_INSN_ADDI10_SP; | |
7146 | } | |
7147 | else if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
7148 | && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256 | |
7149 | && (N32_IMM15S (insn) % 4 == 0)) | |
7150 | { | |
7151 | insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn), | |
7152 | N32_IMM15S (insn) >> 2); | |
7153 | insn_type = NDS32_INSN_ADDRI36_SP; | |
7154 | } | |
7155 | } | |
7156 | else | |
7157 | { | |
7158 | /* Less than 0. */ | |
7159 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8) | |
7160 | { | |
7161 | insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7162 | 0 - N32_IMM15S (insn)); | |
7163 | insn_type = NDS32_INSN_SUBI333; | |
7164 | } | |
7165 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
7166 | && N32_IMM15S (insn) > -32) | |
7167 | { | |
1c8f6a4d KLC |
7168 | insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn), |
7169 | 0 - N32_IMM15S (insn)); | |
35c08157 KLC |
7170 | insn_type = NDS32_INSN_SUBI45; |
7171 | } | |
7172 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
7173 | && N32_RT5 (insn) == N32_RA5 (insn) | |
7174 | && N32_IMM15S (insn) >= -512) | |
7175 | { | |
7176 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
7177 | insn_type = NDS32_INSN_ADDI10_SP; | |
7178 | } | |
7179 | } | |
7180 | break; | |
7181 | ||
7182 | case N32_OP6_ORI: | |
7183 | if (N32_IMM15S (insn) == 0) | |
7184 | { | |
7185 | /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp', | |
7186 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
7187 | if (mach <= MACH_V2 | |
7188 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
7189 | { | |
7190 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
7191 | insn_type = NDS32_INSN_MOV55; | |
7192 | } | |
7193 | } | |
7194 | break; | |
7195 | ||
7196 | case N32_OP6_SUBRI: | |
7197 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
7198 | && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0) | |
7199 | { | |
7200 | insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn)); | |
7201 | insn_type = NDS32_INSN_NEG33; | |
7202 | } | |
7203 | break; | |
7204 | ||
7205 | case N32_OP6_ANDI: | |
7206 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
7207 | { | |
7208 | if (N32_IMM15U (insn) == 1) | |
7209 | { | |
7210 | insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn)); | |
7211 | insn_type = NDS32_INSN_XLSB33; | |
7212 | } | |
7213 | else if (N32_IMM15U (insn) == 0x7ff) | |
7214 | { | |
7215 | insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn)); | |
7216 | insn_type = NDS32_INSN_X11B33; | |
7217 | } | |
7218 | else if (N32_IMM15U (insn) == 0xff) | |
7219 | { | |
7220 | insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
7221 | insn_type = NDS32_INSN_ZEB33; | |
7222 | } | |
7223 | else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn) | |
7224 | && N32_IMM15U (insn) < 256) | |
7225 | { | |
7226 | int imm15u = N32_IMM15U (insn); | |
7227 | ||
7228 | if (__builtin_popcount (imm15u) == 1) | |
7229 | { | |
7230 | /* BMSKI33 */ | |
7231 | int imm3u = __builtin_ctz (imm15u); | |
7232 | ||
7233 | insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u); | |
7234 | insn_type = NDS32_INSN_BMSKI33; | |
7235 | } | |
7236 | else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1) | |
7237 | { | |
7238 | /* FEXTI33 */ | |
7239 | int imm3u = __builtin_ctz (imm15u + 1) - 1; | |
7240 | ||
7241 | insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u); | |
7242 | insn_type = NDS32_INSN_FEXTI33; | |
7243 | } | |
7244 | } | |
7245 | } | |
7246 | break; | |
7247 | ||
7248 | case N32_OP6_SLTI: | |
7249 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
7250 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
7251 | { | |
7252 | insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
7253 | insn_type = NDS32_INSN_SLTI45; | |
7254 | } | |
7255 | break; | |
7256 | ||
7257 | case N32_OP6_SLTSI: | |
7258 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
7259 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
7260 | { | |
7261 | insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
7262 | insn_type = NDS32_INSN_SLTSI45; | |
7263 | } | |
7264 | break; | |
7265 | ||
7266 | case N32_OP6_LWI: | |
7267 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7268 | { | |
7269 | insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7270 | insn_type = NDS32_INSN_LWI450; | |
7271 | } | |
7272 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7273 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7274 | { | |
7275 | insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn), | |
7276 | N32_IMM15S (insn)); | |
7277 | insn_type = NDS32_INSN_LWI333; | |
7278 | } | |
7279 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7280 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7281 | { | |
7282 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7283 | insn_type = NDS32_INSN_LWI37; | |
7284 | } | |
7285 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7286 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7287 | { | |
7288 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7289 | insn_type = NDS32_INSN_LWI37_SP; | |
7290 | } | |
7291 | else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8 | |
7292 | && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0) | |
7293 | { | |
1c8f6a4d KLC |
7294 | insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn), |
7295 | N32_IMM15S (insn) + 32); | |
35c08157 KLC |
7296 | insn_type = NDS32_INSN_LWI45_FE; |
7297 | } | |
7298 | break; | |
7299 | ||
7300 | case N32_OP6_SWI: | |
7301 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7302 | { | |
7303 | insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7304 | insn_type = NDS32_INSN_SWI450; | |
7305 | } | |
7306 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7307 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7308 | { | |
1c8f6a4d KLC |
7309 | insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn), |
7310 | N32_IMM15S (insn)); | |
35c08157 KLC |
7311 | insn_type = NDS32_INSN_SWI333; |
7312 | } | |
7313 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7314 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7315 | { | |
7316 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7317 | insn_type = NDS32_INSN_SWI37; | |
7318 | } | |
7319 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7320 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7321 | { | |
7322 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7323 | insn_type = NDS32_INSN_SWI37_SP; | |
7324 | } | |
7325 | break; | |
7326 | ||
7327 | case N32_OP6_LWI_BI: | |
7328 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7329 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7330 | { | |
7331 | insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7332 | N32_IMM15S (insn)); | |
7333 | insn_type = NDS32_INSN_LWI333_BI; | |
7334 | } | |
7335 | break; | |
7336 | ||
7337 | case N32_OP6_SWI_BI: | |
7338 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7339 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7340 | { | |
7341 | insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7342 | N32_IMM15S (insn)); | |
7343 | insn_type = NDS32_INSN_SWI333_BI; | |
7344 | } | |
7345 | break; | |
7346 | ||
7347 | case N32_OP6_LHI: | |
7348 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7349 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7350 | { | |
7351 | insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7352 | N32_IMM15S (insn)); | |
7353 | insn_type = NDS32_INSN_LHI333; | |
7354 | } | |
7355 | break; | |
7356 | ||
7357 | case N32_OP6_SHI: | |
7358 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7359 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7360 | { | |
7361 | insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7362 | N32_IMM15S (insn)); | |
7363 | insn_type = NDS32_INSN_SHI333; | |
7364 | } | |
7365 | break; | |
7366 | ||
7367 | case N32_OP6_LBI: | |
7368 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7369 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7370 | { | |
7371 | insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7372 | N32_IMM15S (insn)); | |
7373 | insn_type = NDS32_INSN_LBI333; | |
7374 | } | |
7375 | break; | |
7376 | ||
7377 | case N32_OP6_SBI: | |
7378 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7379 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7380 | { | |
7381 | insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7382 | N32_IMM15S (insn)); | |
7383 | insn_type = NDS32_INSN_SBI333; | |
7384 | } | |
7385 | break; | |
7386 | ||
7387 | case N32_OP6_ALU1: | |
7388 | return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type); | |
7389 | ||
7390 | case N32_OP6_ALU2: | |
7391 | return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type); | |
7392 | ||
7393 | case N32_OP6_BR1: | |
7394 | if (!IS_WITHIN_S (N32_IMM14S (insn), 8)) | |
7395 | goto done; | |
7396 | ||
7397 | if ((insn & __BIT (14)) == 0) | |
7398 | { | |
7399 | /* N32_BR1_BEQ */ | |
7400 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7401 | && N32_RT5 (insn) != REG_R5) | |
7402 | insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7403 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7404 | && N32_RA5 (insn) != REG_R5) | |
7405 | insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7406 | insn_type = NDS32_INSN_BEQS38; | |
7407 | break; | |
7408 | } | |
7409 | else | |
7410 | { | |
7411 | /* N32_BR1_BNE */ | |
7412 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7413 | && N32_RT5 (insn) != REG_R5) | |
7414 | insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7415 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7416 | && N32_RA5 (insn) != REG_R5) | |
7417 | insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7418 | insn_type = NDS32_INSN_BNES38; | |
7419 | break; | |
7420 | } | |
7421 | break; | |
7422 | ||
7423 | case N32_OP6_BR2: | |
7424 | switch (N32_BR2_SUB (insn)) | |
7425 | { | |
7426 | case N32_BR2_BEQZ: | |
7427 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7428 | { | |
7429 | insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7430 | insn_type = NDS32_INSN_BEQZ38; | |
7431 | } | |
1c8f6a4d KLC |
7432 | else if (N32_RT5 (insn) == REG_R15 |
7433 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7434 | { |
7435 | insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn)); | |
7436 | insn_type = NDS32_INSN_BEQZS8; | |
7437 | } | |
7438 | break; | |
7439 | ||
7440 | case N32_BR2_BNEZ: | |
7441 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7442 | { | |
7443 | insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7444 | insn_type = NDS32_INSN_BNEZ38; | |
7445 | } | |
1c8f6a4d KLC |
7446 | else if (N32_RT5 (insn) == REG_R15 |
7447 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7448 | { |
7449 | insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn)); | |
7450 | insn_type = NDS32_INSN_BNEZS8; | |
7451 | } | |
7452 | break; | |
7453 | ||
7454 | case N32_BR2_IFCALL: | |
7455 | if (IS_WITHIN_U (N32_IMM16S (insn), 9)) | |
7456 | { | |
7457 | insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn)); | |
7458 | insn_type = NDS32_INSN_IFCALL9; | |
7459 | } | |
7460 | break; | |
7461 | } | |
7462 | break; | |
7463 | ||
7464 | case N32_OP6_JI: | |
7465 | if ((insn & __BIT (24)) == 0) | |
7466 | { | |
7467 | /* N32_JI_J */ | |
7468 | if (IS_WITHIN_S (N32_IMM24S (insn), 8)) | |
7469 | { | |
7470 | insn16 = N16_TYPE8 (J8, N32_IMM24S (insn)); | |
7471 | insn_type = NDS32_INSN_J8; | |
7472 | } | |
7473 | } | |
7474 | break; | |
7475 | ||
7476 | case N32_OP6_JREG: | |
7477 | if (__GF (insn, 8, 2) != 0) | |
7478 | goto done; | |
7479 | ||
7480 | switch (N32_IMMU (insn, 5)) | |
7481 | { | |
7482 | case N32_JREG_JR: | |
7483 | if (N32_JREG_HINT (insn) == 0) | |
7484 | { | |
7485 | /* jr */ | |
7486 | insn16 = N16_TYPE5 (JR5, N32_RB5 (insn)); | |
7487 | insn_type = NDS32_INSN_JR5; | |
7488 | } | |
7489 | else if (N32_JREG_HINT (insn) == 1) | |
7490 | { | |
7491 | /* ret */ | |
7492 | insn16 = N16_TYPE5 (RET5, N32_RB5 (insn)); | |
7493 | insn_type = NDS32_INSN_RET5; | |
7494 | } | |
7495 | else if (N32_JREG_HINT (insn) == 3) | |
7496 | { | |
7497 | /* ifret = mov55 $sp, $sp */ | |
7498 | insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP); | |
7499 | insn_type = NDS32_INSN_IFRET; | |
7500 | } | |
7501 | break; | |
7502 | ||
7503 | case N32_JREG_JRAL: | |
7504 | /* It's convertible when return rt5 is $lp and address | |
7505 | translation is kept. */ | |
7506 | if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0) | |
7507 | { | |
7508 | insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn)); | |
7509 | insn_type = NDS32_INSN_JRAL5; | |
7510 | } | |
7511 | break; | |
7512 | } | |
7513 | break; | |
7514 | ||
7515 | case N32_OP6_MISC: | |
7516 | if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32) | |
7517 | { | |
7518 | /* For v3, swid above 31 are used for ex9.it. */ | |
7519 | insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn)); | |
7520 | insn_type = NDS32_INSN_BREAK16; | |
7521 | } | |
7522 | break; | |
7523 | ||
7524 | default: | |
7525 | /* This instruction has no 16-bit variant. */ | |
7526 | goto done; | |
7527 | } | |
7528 | ||
7529 | done: | |
7530 | /* Bit-15 of insn16 should be set for a valid instruction. */ | |
7531 | if ((insn16 & 0x8000) == 0) | |
7532 | return 0; | |
7533 | ||
7534 | if (pinsn16) | |
7535 | *pinsn16 = insn16; | |
7536 | if (pinsn_type) | |
7537 | *pinsn_type = insn_type; | |
7538 | return 1; | |
7539 | } | |
7540 | ||
7541 | static int | |
7542 | special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16, | |
7543 | Elf_Internal_Rela *reloc) | |
7544 | { | |
7545 | uint16_t insn16 = 0; | |
7546 | ||
7547 | if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0 | |
7548 | || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16)) | |
7549 | return 0; | |
7550 | ||
7551 | if (!N32_IS_RT3 (insn)) | |
7552 | return 0; | |
7553 | ||
7554 | switch (N32_OP6 (insn)) | |
7555 | { | |
7556 | case N32_OP6_LWI: | |
7557 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7558 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7559 | break; | |
7560 | case N32_OP6_SWI: | |
7561 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7562 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7563 | break; | |
7564 | case N32_OP6_HWGP: | |
7565 | if (!IS_WITHIN_U (N32_IMM17S (insn), 7)) | |
7566 | break; | |
7567 | ||
7568 | if (__GF (insn, 17, 3) == 6) | |
7569 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn)); | |
7570 | else if (__GF (insn, 17, 3) == 7) | |
7571 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn)); | |
7572 | break; | |
7573 | } | |
7574 | ||
7575 | if ((insn16 & 0x8000) == 0) | |
7576 | return 0; | |
7577 | ||
7578 | *pinsn16 = insn16; | |
7579 | return 1; | |
7580 | } | |
7581 | ||
7582 | /* Convert a 16-bit instruction to 32-bit one. | |
7583 | INSN16 it the input and PINSN it the point to output. | |
7584 | Return non-zero on successful. Otherwise 0 is returned. */ | |
7585 | ||
7586 | int | |
7587 | nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn) | |
7588 | { | |
7589 | uint32_t insn = 0xffffffff; | |
7590 | unsigned long mach = bfd_get_mach (abfd); | |
7591 | ||
7592 | /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */ | |
7593 | ||
7594 | switch (__GF (insn16, 9, 6)) | |
7595 | { | |
7596 | case 0x4: /* add45 */ | |
1c8f6a4d KLC |
7597 | insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16), |
7598 | N16_RA5 (insn16)); | |
35c08157 KLC |
7599 | goto done; |
7600 | case 0x5: /* sub45 */ | |
1c8f6a4d KLC |
7601 | insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16), |
7602 | N16_RA5 (insn16)); | |
35c08157 KLC |
7603 | goto done; |
7604 | case 0x6: /* addi45 */ | |
1c8f6a4d KLC |
7605 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7606 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7607 | goto done; |
7608 | case 0x7: /* subi45 */ | |
1c8f6a4d KLC |
7609 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7610 | -N16_IMM5U (insn16)); | |
35c08157 KLC |
7611 | goto done; |
7612 | case 0x8: /* srai45 */ | |
1c8f6a4d KLC |
7613 | insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16), |
7614 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7615 | goto done; |
7616 | case 0x9: /* srli45 */ | |
1c8f6a4d KLC |
7617 | insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16), |
7618 | N16_IMM5U (insn16)); | |
35c08157 | 7619 | goto done; |
35c08157 | 7620 | case 0xa: /* slli333 */ |
1c8f6a4d KLC |
7621 | insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16), |
7622 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7623 | goto done; |
7624 | case 0xc: /* add333 */ | |
1c8f6a4d KLC |
7625 | insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16), |
7626 | N16_RB3 (insn16)); | |
35c08157 KLC |
7627 | goto done; |
7628 | case 0xd: /* sub333 */ | |
1c8f6a4d KLC |
7629 | insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16), |
7630 | N16_RB3 (insn16)); | |
35c08157 KLC |
7631 | goto done; |
7632 | case 0xe: /* addi333 */ | |
1c8f6a4d KLC |
7633 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7634 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7635 | goto done; |
7636 | case 0xf: /* subi333 */ | |
1c8f6a4d KLC |
7637 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7638 | -N16_IMM3U (insn16)); | |
35c08157 | 7639 | goto done; |
35c08157 | 7640 | case 0x10: /* lwi333 */ |
1c8f6a4d KLC |
7641 | insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7642 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7643 | goto done; |
7644 | case 0x12: /* lhi333 */ | |
1c8f6a4d KLC |
7645 | insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7646 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7647 | goto done; |
7648 | case 0x13: /* lbi333 */ | |
1c8f6a4d KLC |
7649 | insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7650 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7651 | goto done; |
7652 | case 0x11: /* lwi333.bi */ | |
1c8f6a4d KLC |
7653 | insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7654 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7655 | goto done; |
7656 | case 0x14: /* swi333 */ | |
1c8f6a4d KLC |
7657 | insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7658 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7659 | goto done; |
7660 | case 0x16: /* shi333 */ | |
1c8f6a4d KLC |
7661 | insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7662 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7663 | goto done; |
7664 | case 0x17: /* sbi333 */ | |
1c8f6a4d KLC |
7665 | insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7666 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7667 | goto done; |
7668 | case 0x15: /* swi333.bi */ | |
1c8f6a4d KLC |
7669 | insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7670 | N16_IMM3U (insn16)); | |
35c08157 | 7671 | goto done; |
35c08157 | 7672 | case 0x18: /* addri36.sp */ |
1c8f6a4d KLC |
7673 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP, |
7674 | N16_IMM6U (insn16) << 2); | |
35c08157 | 7675 | goto done; |
35c08157 | 7676 | case 0x19: /* lwi45.fe */ |
1c8f6a4d KLC |
7677 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8, |
7678 | (N16_IMM5U (insn16) - 32)); | |
35c08157 KLC |
7679 | goto done; |
7680 | case 0x1a: /* lwi450 */ | |
7681 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7682 | goto done; | |
7683 | case 0x1b: /* swi450 */ | |
7684 | insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7685 | goto done; | |
7686 | ||
1c8f6a4d | 7687 | /* These are r15 implied instructions. */ |
35c08157 KLC |
7688 | case 0x30: /* slts45 */ |
7689 | insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7690 | goto done; | |
7691 | case 0x31: /* slt45 */ | |
7692 | insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7693 | goto done; | |
7694 | case 0x32: /* sltsi45 */ | |
7695 | insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7696 | goto done; | |
7697 | case 0x33: /* slti45 */ | |
7698 | insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7699 | goto done; | |
7700 | case 0x34: /* beqzs8, bnezs8 */ | |
7701 | if (insn16 & __BIT (8)) | |
7702 | insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16)); | |
7703 | else | |
7704 | insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16)); | |
7705 | goto done; | |
7706 | ||
7707 | case 0x35: /* break16, ex9.it */ | |
7708 | /* Only consider range of v3 break16. */ | |
7709 | insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK); | |
7710 | goto done; | |
7711 | ||
7712 | case 0x3c: /* ifcall9 */ | |
7713 | insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16)); | |
7714 | goto done; | |
7715 | case 0x3d: /* movpi45 */ | |
7716 | insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16); | |
7717 | goto done; | |
7718 | ||
7719 | case 0x3f: /* MISC33 */ | |
1c8f6a4d | 7720 | switch (insn16 & 0x7) |
35c08157 KLC |
7721 | { |
7722 | case 2: /* neg33 */ | |
7723 | insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7724 | break; | |
7725 | case 3: /* not33 */ | |
1c8f6a4d KLC |
7726 | insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16), |
7727 | N16_RA3 (insn16)); | |
35c08157 KLC |
7728 | break; |
7729 | case 4: /* mul33 */ | |
1c8f6a4d KLC |
7730 | insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16), |
7731 | N16_RA3 (insn16)); | |
35c08157 KLC |
7732 | break; |
7733 | case 5: /* xor33 */ | |
1c8f6a4d KLC |
7734 | insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16), |
7735 | N16_RA3 (insn16)); | |
35c08157 KLC |
7736 | break; |
7737 | case 6: /* and33 */ | |
1c8f6a4d KLC |
7738 | insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16), |
7739 | N16_RA3 (insn16)); | |
35c08157 KLC |
7740 | break; |
7741 | case 7: /* or33 */ | |
1c8f6a4d KLC |
7742 | insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16), |
7743 | N16_RA3 (insn16)); | |
35c08157 KLC |
7744 | break; |
7745 | } | |
7746 | goto done; | |
7747 | ||
1c8f6a4d | 7748 | case 0xb: |
35c08157 KLC |
7749 | switch (insn16 & 0x7) |
7750 | { | |
7751 | case 0: /* zeb33 */ | |
7752 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff); | |
7753 | break; | |
7754 | case 1: /* zeh33 */ | |
7755 | insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7756 | break; | |
7757 | case 2: /* seb33 */ | |
7758 | insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7759 | break; | |
7760 | case 3: /* seh33 */ | |
7761 | insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7762 | break; | |
7763 | case 4: /* xlsb33 */ | |
7764 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1); | |
7765 | break; | |
7766 | case 5: /* x11b33 */ | |
7767 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff); | |
7768 | break; | |
7769 | case 6: /* bmski33 */ | |
7770 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7771 | 1 << __GF (insn16, 3, 3)); |
35c08157 KLC |
7772 | break; |
7773 | case 7: /* fexti33 */ | |
7774 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7775 | (1 << (__GF (insn16, 3, 3) + 1)) - 1); |
35c08157 KLC |
7776 | break; |
7777 | } | |
7778 | goto done; | |
7779 | } | |
7780 | ||
7781 | switch (__GF (insn16, 10, 5)) | |
7782 | { | |
7783 | case 0x0: /* mov55 or ifret16 */ | |
7784 | if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP | |
7785 | && N16_RT5 (insn16) == N16_RA5 (insn16)) | |
1c8f6a4d | 7786 | insn = N32_JREG (JR, 0, 0, 0, 3); |
35c08157 | 7787 | else |
1c8f6a4d | 7788 | insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0); |
35c08157 KLC |
7789 | goto done; |
7790 | case 0x1: /* movi55 */ | |
7791 | insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16)); | |
7792 | goto done; | |
7793 | case 0x1b: /* addi10s (V2) */ | |
7794 | insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16)); | |
7795 | goto done; | |
7796 | } | |
7797 | ||
7798 | switch (__GF (insn16, 11, 4)) | |
7799 | { | |
7800 | case 0x7: /* lwi37.fp/swi37.fp */ | |
7801 | if (insn16 & __BIT (7)) /* swi37.fp */ | |
7802 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); | |
7803 | else /* lwi37.fp */ | |
7804 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); | |
7805 | goto done; | |
7806 | case 0x8: /* beqz38 */ | |
7807 | insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7808 | goto done; | |
7809 | case 0x9: /* bnez38 */ | |
7810 | insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7811 | goto done; | |
7812 | case 0xa: /* beqs38/j8, implied r5 */ | |
7813 | if (N16_RT38 (insn16) == 5) | |
7814 | insn = N32_JI (J, N16_IMM8S (insn16)); | |
7815 | else | |
7816 | insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7817 | goto done; | |
7818 | case 0xb: /* bnes38 and others */ | |
7819 | if (N16_RT38 (insn16) == 5) | |
7820 | { | |
7821 | switch (__GF (insn16, 5, 3)) | |
7822 | { | |
7823 | case 0: /* jr5 */ | |
7824 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0); | |
7825 | break; | |
7826 | case 4: /* ret5 */ | |
7827 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1); | |
7828 | break; | |
7829 | case 1: /* jral5 */ | |
7830 | insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0); | |
7831 | break; | |
7832 | case 2: /* ex9.it imm5 */ | |
7833 | /* ex9.it had no 32-bit variantl. */ | |
7834 | break; | |
7835 | case 5: /* add5.pc */ | |
7836 | /* add5.pc had no 32-bit variantl. */ | |
7837 | break; | |
7838 | } | |
7839 | } | |
7840 | else /* bnes38 */ | |
7841 | insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7842 | goto done; | |
7843 | case 0xe: /* lwi37/swi37 */ | |
7844 | if (insn16 & (1 << 7)) /* swi37.sp */ | |
7845 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7846 | else /* lwi37.sp */ | |
7847 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7848 | goto done; | |
7849 | } | |
7850 | ||
7851 | done: | |
7852 | if (insn & 0x80000000) | |
7853 | return 0; | |
7854 | ||
7855 | if (pinsn) | |
7856 | *pinsn = insn; | |
7857 | return 1; | |
7858 | } | |
7859 | \f | |
7860 | static bfd_boolean | |
7861 | is_sda_access_insn (unsigned long insn) | |
7862 | { | |
7863 | switch (N32_OP6 (insn)) | |
7864 | { | |
7865 | case N32_OP6_LWI: | |
7866 | case N32_OP6_LHI: | |
7867 | case N32_OP6_LHSI: | |
7868 | case N32_OP6_LBI: | |
7869 | case N32_OP6_LBSI: | |
7870 | case N32_OP6_SWI: | |
7871 | case N32_OP6_SHI: | |
7872 | case N32_OP6_SBI: | |
7873 | case N32_OP6_LWC: | |
7874 | case N32_OP6_LDC: | |
7875 | case N32_OP6_SWC: | |
7876 | case N32_OP6_SDC: | |
7877 | return TRUE; | |
7878 | default: | |
7879 | ; | |
7880 | } | |
7881 | return FALSE; | |
7882 | } | |
7883 | ||
7884 | static unsigned long | |
7885 | turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn) | |
7886 | { | |
7887 | uint32_t oinsn = 0; | |
7888 | ||
7889 | switch (type) | |
7890 | { | |
7891 | case R_NDS32_GOT_LO12: | |
7892 | case R_NDS32_GOTOFF_LO12: | |
7893 | case R_NDS32_PLTREL_LO12: | |
7894 | case R_NDS32_PLT_GOTREL_LO12: | |
7895 | case R_NDS32_LO12S0_RELA: | |
7896 | switch (N32_OP6 (insn)) | |
7897 | { | |
7898 | case N32_OP6_LBI: | |
7899 | /* lbi.gp */ | |
7900 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
7901 | break; | |
7902 | case N32_OP6_LBSI: | |
7903 | /* lbsi.gp */ | |
7904 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); | |
7905 | break; | |
7906 | case N32_OP6_SBI: | |
7907 | /* sbi.gp */ | |
7908 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
7909 | break; | |
7910 | case N32_OP6_ORI: | |
7911 | /* addi.gp */ | |
7912 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
7913 | break; | |
7914 | } | |
7915 | break; | |
7916 | ||
7917 | case R_NDS32_LO12S1_RELA: | |
7918 | switch (N32_OP6 (insn)) | |
7919 | { | |
7920 | case N32_OP6_LHI: | |
7921 | /* lhi.gp */ | |
7922 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
7923 | break; | |
7924 | case N32_OP6_LHSI: | |
7925 | /* lhsi.gp */ | |
7926 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); | |
7927 | break; | |
7928 | case N32_OP6_SHI: | |
7929 | /* shi.gp */ | |
7930 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); | |
7931 | break; | |
7932 | } | |
7933 | break; | |
7934 | ||
7935 | case R_NDS32_LO12S2_RELA: | |
7936 | switch (N32_OP6 (insn)) | |
7937 | { | |
7938 | case N32_OP6_LWI: | |
7939 | /* lwi.gp */ | |
7940 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
7941 | break; | |
7942 | case N32_OP6_SWI: | |
7943 | /* swi.gp */ | |
7944 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
7945 | break; | |
7946 | } | |
7947 | break; | |
7948 | ||
7949 | case R_NDS32_LO12S2_DP_RELA: | |
7950 | case R_NDS32_LO12S2_SP_RELA: | |
7951 | oinsn = (insn & 0x7ff07000) | (REG_GP << 15); | |
7952 | break; | |
7953 | } | |
7954 | ||
7955 | if (oinsn) | |
7956 | *pinsn = oinsn; | |
7957 | ||
7958 | return oinsn != 0; | |
7959 | } | |
7960 | ||
7961 | /* Linker hasn't found the correct merge section for non-section symbol | |
7962 | in relax time, this work is left to the function elf_link_input_bfd(). | |
7963 | So for non-section symbol, _bfd_merged_section_offset is also needed | |
7964 | to find the correct symbol address. */ | |
7965 | ||
7966 | static bfd_vma | |
7967 | nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym, | |
7968 | asection **psec, Elf_Internal_Rela *rel) | |
7969 | { | |
7970 | asection *sec = *psec; | |
7971 | bfd_vma relocation; | |
7972 | ||
7973 | relocation = (sec->output_section->vma | |
7974 | + sec->output_offset + sym->st_value); | |
7975 | if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7976 | { | |
7977 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
7978 | rel->r_addend = | |
7979 | _bfd_merged_section_offset (abfd, psec, | |
7980 | elf_section_data (sec)->sec_info, | |
7981 | sym->st_value + rel->r_addend); | |
7982 | else | |
7983 | rel->r_addend = | |
7984 | _bfd_merged_section_offset (abfd, psec, | |
7985 | elf_section_data (sec)->sec_info, | |
7986 | sym->st_value) + rel->r_addend; | |
7987 | ||
7988 | if (sec != *psec) | |
7989 | { | |
7990 | /* If we have changed the section, and our original section is | |
7991 | marked with SEC_EXCLUDE, it means that the original | |
7992 | SEC_MERGE section has been completely subsumed in some | |
7993 | other SEC_MERGE section. In this case, we need to leave | |
7994 | some info around for --emit-relocs. */ | |
7995 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7996 | sec->kept_section = *psec; | |
7997 | sec = *psec; | |
7998 | } | |
7999 | rel->r_addend -= relocation; | |
8000 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
8001 | } | |
8002 | return relocation; | |
8003 | } | |
8004 | ||
8005 | static bfd_vma | |
8006 | calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel, | |
8007 | Elf_Internal_Sym *isymbuf, | |
8008 | Elf_Internal_Shdr *symtab_hdr) | |
8009 | { | |
8010 | bfd_signed_vma foff; | |
8011 | bfd_vma symval, addend; | |
8012 | Elf_Internal_Rela irel_fn; | |
8013 | Elf_Internal_Sym *isym; | |
8014 | asection *sym_sec; | |
8015 | ||
8016 | /* Get the value of the symbol referred to by the reloc. */ | |
8017 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
8018 | { | |
8019 | /* A local symbol. */ | |
8020 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
8021 | ||
8022 | if (isym->st_shndx == SHN_UNDEF) | |
8023 | sym_sec = bfd_und_section_ptr; | |
8024 | else if (isym->st_shndx == SHN_ABS) | |
8025 | sym_sec = bfd_abs_section_ptr; | |
8026 | else if (isym->st_shndx == SHN_COMMON) | |
8027 | sym_sec = bfd_com_section_ptr; | |
8028 | else | |
8029 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8030 | memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela)); | |
8031 | symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn); | |
8032 | addend = irel_fn.r_addend; | |
8033 | } | |
8034 | else | |
8035 | { | |
8036 | unsigned long indx; | |
8037 | struct elf_link_hash_entry *h; | |
8038 | ||
8039 | /* An external symbol. */ | |
8040 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
8041 | h = elf_sym_hashes (abfd)[indx]; | |
8042 | BFD_ASSERT (h != NULL); | |
8043 | ||
8044 | while (h->root.type == bfd_link_hash_indirect | |
8045 | || h->root.type == bfd_link_hash_warning) | |
8046 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8047 | ||
8048 | if (h->root.type != bfd_link_hash_defined | |
8049 | && h->root.type != bfd_link_hash_defweak) | |
8050 | /* This appears to be a reference to an undefined | |
8051 | symbol. Just ignore it--it will be caught by the | |
8052 | regular reloc processing. */ | |
8053 | return 0; | |
8054 | ||
8055 | if (h->root.u.def.section->flags & SEC_MERGE) | |
8056 | { | |
8057 | sym_sec = h->root.u.def.section; | |
8058 | symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data | |
8059 | (sym_sec)->sec_info, h->root.u.def.value); | |
8060 | symval = symval + sym_sec->output_section->vma | |
8061 | + sym_sec->output_offset; | |
8062 | } | |
8063 | else | |
8064 | symval = (h->root.u.def.value | |
8065 | + h->root.u.def.section->output_section->vma | |
8066 | + h->root.u.def.section->output_offset); | |
8067 | addend = irel->r_addend; | |
8068 | } | |
8069 | ||
8070 | foff = symval + addend; | |
8071 | ||
8072 | return foff; | |
8073 | } | |
8074 | ||
8075 | static bfd_vma | |
8076 | calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
8077 | Elf_Internal_Rela *irel, | |
8078 | Elf_Internal_Shdr *symtab_hdr) | |
8079 | { | |
8080 | int symndx; | |
8081 | bfd_vma *local_got_offsets; | |
8082 | /* Get the value of the symbol referred to by the reloc. */ | |
8083 | struct elf_link_hash_entry *h; | |
8084 | struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info); | |
8085 | ||
8086 | /* An external symbol. */ | |
8087 | symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
8088 | h = elf_sym_hashes (abfd)[symndx]; | |
8089 | while (h->root.type == bfd_link_hash_indirect | |
8090 | || h->root.type == bfd_link_hash_warning) | |
8091 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8092 | ||
8093 | if (symndx >= 0) | |
8094 | { | |
8095 | BFD_ASSERT (h != NULL); | |
8096 | return htab->sgot->output_section->vma + htab->sgot->output_offset | |
8097 | + h->got.offset; | |
8098 | } | |
8099 | else | |
8100 | { | |
8101 | local_got_offsets = elf_local_got_offsets (abfd); | |
8102 | BFD_ASSERT (local_got_offsets != NULL); | |
8103 | return htab->sgot->output_section->vma + htab->sgot->output_offset | |
8104 | + local_got_offsets[ELF32_R_SYM (irel->r_info)]; | |
8105 | } | |
8106 | ||
8107 | /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */ | |
8108 | /* The check of h->root.type is passed. */ | |
8109 | } | |
8110 | ||
8111 | static int | |
8112 | is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED, | |
8113 | asection *sec, Elf_Internal_Rela *rel) | |
8114 | { | |
8115 | bfd_byte *contents; | |
8116 | unsigned short insn16; | |
8117 | ||
8118 | if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG)) | |
8119 | return FALSE; | |
8120 | contents = elf_section_data (sec)->this_hdr.contents; | |
8121 | insn16 = bfd_getb16 (contents + rel->r_offset); | |
8122 | if (insn16 == NDS32_NOP16) | |
8123 | return TRUE; | |
8124 | return FALSE; | |
8125 | } | |
8126 | ||
8127 | /* It checks whether the instruction could be converted to | |
8128 | 16-bit form and returns the converted one. | |
8129 | ||
8130 | `internal_relocs' is supposed to be sorted. */ | |
8131 | ||
8132 | static int | |
8133 | is_convert_32_to_16 (bfd *abfd, asection *sec, | |
8134 | Elf_Internal_Rela *reloc, | |
8135 | Elf_Internal_Rela *internal_relocs, | |
8136 | Elf_Internal_Rela *irelend, | |
8137 | uint16_t *insn16) | |
8138 | { | |
8139 | #define NORMAL_32_TO_16 (1 << 0) | |
8140 | #define SPECIAL_32_TO_16 (1 << 1) | |
8141 | bfd_byte *contents = NULL; | |
8142 | bfd_signed_vma off; | |
8143 | bfd_vma mem_addr; | |
8144 | uint32_t insn = 0; | |
8145 | Elf_Internal_Rela *pc_rel; | |
8146 | int pic_ext_target = 0; | |
8147 | Elf_Internal_Shdr *symtab_hdr; | |
8148 | Elf_Internal_Sym *isymbuf = NULL; | |
8149 | int convert_type; | |
8150 | bfd_vma offset; | |
8151 | ||
8152 | if (reloc->r_offset + 4 > sec->size) | |
8153 | return FALSE; | |
8154 | ||
8155 | offset = reloc->r_offset; | |
8156 | ||
0c4bd9d9 | 8157 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
35c08157 KLC |
8158 | return FALSE; |
8159 | insn = bfd_getb32 (contents + offset); | |
8160 | ||
8161 | if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL)) | |
8162 | convert_type = NORMAL_32_TO_16; | |
8163 | else if (special_convert_32_to_16 (insn, insn16, reloc)) | |
8164 | convert_type = SPECIAL_32_TO_16; | |
8165 | else | |
8166 | return FALSE; | |
8167 | ||
8168 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8169 | if (!nds32_get_local_syms (abfd, sec, &isymbuf)) | |
8170 | return FALSE; | |
8171 | ||
8172 | /* Find the first relocation of the same relocation-type, | |
8173 | so we iteratie them forward. */ | |
8174 | pc_rel = reloc; | |
1c8f6a4d | 8175 | while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset) |
35c08157 KLC |
8176 | pc_rel--; |
8177 | ||
8178 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
8179 | { | |
8180 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
8181 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
8182 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA | |
8183 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
8184 | { | |
8185 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
8186 | &pic_ext_target); | |
1c8f6a4d KLC |
8187 | if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1 |
8188 | || off == 0) | |
35c08157 KLC |
8189 | return FALSE; |
8190 | break; | |
8191 | } | |
8192 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
8193 | { | |
8194 | /* movi => movi55 */ | |
1c8f6a4d KLC |
8195 | mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf, |
8196 | symtab_hdr); | |
8197 | /* mem_addr is unsigned, but the value should | |
8198 | be between [-16, 15]. */ | |
35c08157 KLC |
8199 | if ((mem_addr + 0x10) >> 5) |
8200 | return FALSE; | |
8201 | break; | |
8202 | } | |
1c8f6a4d KLC |
8203 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20) |
8204 | || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12)) | |
8205 | { | |
8206 | /* It never happen movi to movi55 for R_NDS32_TLS_LE_20, | |
8207 | because it can be relaxed to addi for TLS_LE_ADD. */ | |
8208 | return FALSE; | |
8209 | } | |
35c08157 KLC |
8210 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA |
8211 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
8212 | && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) | |
8213 | && convert_type == SPECIAL_32_TO_16) | |
8214 | { | |
8215 | /* fp-as-gp | |
8216 | We've selected a best fp-base for this access, so we can | |
8217 | always resolve it anyway. Do nothing. */ | |
8218 | break; | |
8219 | } | |
8220 | else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE | |
8221 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT)) | |
8222 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY) | |
8223 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16)) | |
8224 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE) | |
8225 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA))) | |
8226 | { | |
1c8f6a4d KLC |
8227 | /* Prevent unresolved addi instruction translate |
8228 | to addi45 or addi333. */ | |
35c08157 KLC |
8229 | return FALSE; |
8230 | } | |
1c8f6a4d KLC |
8231 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
8232 | { | |
8233 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
8234 | &pic_ext_target); | |
8235 | if (off >= ACCURATE_U9BIT_S1 || off <= 0) | |
8236 | return FALSE; | |
8237 | break; | |
8238 | } | |
35c08157 KLC |
8239 | } |
8240 | ||
8241 | return TRUE; | |
8242 | } | |
8243 | ||
8244 | static void | |
8245 | nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents, | |
8246 | Elf_Internal_Rela *reloc, | |
8247 | Elf_Internal_Rela *internal_relocs, | |
8248 | Elf_Internal_Rela *irelend, | |
8249 | unsigned short insn16) | |
8250 | { | |
8251 | Elf_Internal_Rela *pc_rel; | |
8252 | bfd_vma offset; | |
8253 | ||
8254 | offset = reloc->r_offset; | |
8255 | bfd_putb16 (insn16, contents + offset); | |
8256 | /* Find the first relocation of the same relocation-type, | |
8257 | so we iteratie them forward. */ | |
8258 | pc_rel = reloc; | |
8259 | while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset) | |
8260 | pc_rel--; | |
8261 | ||
8262 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
8263 | { | |
8264 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
8265 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
8266 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA) | |
8267 | { | |
8268 | pc_rel->r_info = | |
8269 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA); | |
8270 | } | |
8271 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
8272 | pc_rel->r_info = | |
8273 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL); | |
8274 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
8275 | pc_rel->r_info = | |
8276 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA); | |
8277 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA | |
8278 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
8279 | pc_rel->r_info = | |
8280 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA); | |
1c8f6a4d KLC |
8281 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
8282 | pc_rel->r_info = | |
8283 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
8284 | } |
8285 | } | |
8286 | ||
8287 | /* Find a relocation of type specified by `reloc_type' | |
8288 | of the same r_offset with reloc. | |
8289 | If not found, return irelend. | |
8290 | ||
8291 | Assuming relocations are sorted by r_offset, | |
8292 | we find the relocation from `reloc' backward untill relocs, | |
8293 | or find it from `reloc' forward untill irelend. */ | |
8294 | ||
8295 | static Elf_Internal_Rela * | |
8296 | find_relocs_at_address (Elf_Internal_Rela *reloc, | |
8297 | Elf_Internal_Rela *relocs, | |
8298 | Elf_Internal_Rela *irelend, | |
8299 | enum elf_nds32_reloc_type reloc_type) | |
8300 | { | |
8301 | Elf_Internal_Rela *rel_t; | |
8302 | ||
8303 | /* Find backward. */ | |
8304 | for (rel_t = reloc; | |
8305 | rel_t >= relocs && rel_t->r_offset == reloc->r_offset; | |
8306 | rel_t--) | |
8307 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8308 | return rel_t; | |
8309 | ||
1c8f6a4d | 8310 | /* We didn't find it backward. Try find it forward. */ |
35c08157 KLC |
8311 | for (rel_t = reloc; |
8312 | rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8313 | rel_t++) | |
8314 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8315 | return rel_t; | |
8316 | ||
8317 | return irelend; | |
8318 | } | |
8319 | ||
8320 | /* Find a relocation of specified type and offset. | |
8321 | `reloc' is just a refence point to find a relocation at specified offset. | |
8322 | If not found, return irelend. | |
8323 | ||
8324 | Assuming relocations are sorted by r_offset, | |
8325 | we find the relocation from `reloc' backward untill relocs, | |
8326 | or find it from `reloc' forward untill irelend. */ | |
8327 | ||
8328 | static Elf_Internal_Rela * | |
8329 | find_relocs_at_address_addr (Elf_Internal_Rela *reloc, | |
8330 | Elf_Internal_Rela *relocs, | |
8331 | Elf_Internal_Rela *irelend, | |
6cae483a | 8332 | enum elf_nds32_reloc_type reloc_type, |
35c08157 KLC |
8333 | bfd_vma offset_p) |
8334 | { | |
8335 | Elf_Internal_Rela *rel_t = NULL; | |
8336 | ||
8337 | /* First, we try to find a relocation of offset `offset_p', | |
8338 | and then we use find_relocs_at_address to find specific type. */ | |
8339 | ||
8340 | if (reloc->r_offset > offset_p) | |
8341 | { | |
8342 | /* Find backward. */ | |
8343 | for (rel_t = reloc; | |
8344 | rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--) | |
8345 | /* Do nothing. */; | |
8346 | } | |
8347 | else if (reloc->r_offset < offset_p) | |
8348 | { | |
8349 | /* Find forward. */ | |
8350 | for (rel_t = reloc; | |
8351 | rel_t < irelend && rel_t->r_offset < offset_p; rel_t++) | |
8352 | /* Do nothing. */; | |
8353 | } | |
8354 | else | |
8355 | rel_t = reloc; | |
8356 | ||
8357 | /* Not found? */ | |
8358 | if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p) | |
8359 | return irelend; | |
8360 | ||
8361 | return find_relocs_at_address (rel_t, relocs, irelend, reloc_type); | |
8362 | } | |
8363 | ||
8364 | static bfd_boolean | |
8365 | nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc, | |
8366 | Elf_Internal_Rela *internal_relocs, | |
8367 | Elf_Internal_Rela *irelend, | |
8368 | unsigned char reloc_type) | |
8369 | { | |
8370 | Elf_Internal_Rela *rel_t; | |
8371 | ||
8372 | for (rel_t = reloc; | |
8373 | rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset; | |
8374 | rel_t--) | |
8375 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8376 | { | |
8377 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8378 | && rel_t->r_addend == reloc->r_addend) | |
8379 | continue; | |
8380 | return TRUE; | |
8381 | } | |
8382 | ||
8383 | for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8384 | rel_t++) | |
8385 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8386 | { | |
8387 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8388 | && rel_t->r_addend == reloc->r_addend) | |
8389 | continue; | |
8390 | return TRUE; | |
8391 | } | |
8392 | ||
8393 | return FALSE; | |
8394 | } | |
8395 | ||
8396 | typedef struct nds32_elf_blank nds32_elf_blank_t; | |
8397 | struct nds32_elf_blank | |
8398 | { | |
8399 | /* Where the blank begins. */ | |
8400 | bfd_vma offset; | |
8401 | /* The size of the blank. */ | |
8402 | bfd_vma size; | |
8403 | /* The accumulative size before this blank. */ | |
8404 | bfd_vma total_size; | |
8405 | nds32_elf_blank_t *next; | |
8406 | nds32_elf_blank_t *prev; | |
8407 | }; | |
8408 | ||
8409 | static nds32_elf_blank_t *blank_free_list = NULL; | |
8410 | ||
8411 | static nds32_elf_blank_t * | |
8412 | create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p) | |
8413 | { | |
8414 | nds32_elf_blank_t *blank_t; | |
8415 | ||
8416 | if (blank_free_list) | |
8417 | { | |
8418 | blank_t = blank_free_list; | |
8419 | blank_free_list = blank_free_list->next; | |
8420 | } | |
8421 | else | |
8422 | blank_t = bfd_malloc (sizeof (nds32_elf_blank_t)); | |
8423 | ||
8424 | if (blank_t == NULL) | |
8425 | return NULL; | |
8426 | ||
8427 | blank_t->offset = offset_p; | |
8428 | blank_t->size = size_p; | |
8429 | blank_t->total_size = 0; | |
8430 | blank_t->next = NULL; | |
8431 | blank_t->prev = NULL; | |
8432 | ||
8433 | return blank_t; | |
8434 | } | |
8435 | ||
8436 | static void | |
8437 | remove_nds32_elf_blank (nds32_elf_blank_t *blank_p) | |
8438 | { | |
8439 | if (blank_free_list) | |
8440 | { | |
8441 | blank_free_list->prev = blank_p; | |
8442 | blank_p->next = blank_free_list; | |
8443 | } | |
8444 | else | |
8445 | blank_p->next = NULL; | |
8446 | ||
8447 | blank_p->prev = NULL; | |
8448 | blank_free_list = blank_p; | |
8449 | } | |
8450 | ||
8451 | static void | |
8452 | clean_nds32_elf_blank (void) | |
8453 | { | |
8454 | nds32_elf_blank_t *blank_t; | |
8455 | ||
8456 | while (blank_free_list) | |
8457 | { | |
8458 | blank_t = blank_free_list; | |
8459 | blank_free_list = blank_free_list->next; | |
8460 | free (blank_t); | |
8461 | } | |
8462 | } | |
8463 | ||
8464 | static nds32_elf_blank_t * | |
8465 | search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr) | |
8466 | { | |
8467 | nds32_elf_blank_t *blank_t; | |
8468 | ||
8469 | if (!blank_p) | |
8470 | return NULL; | |
8471 | blank_t = blank_p; | |
8472 | ||
8473 | while (blank_t && addr < blank_t->offset) | |
8474 | blank_t = blank_t->prev; | |
8475 | while (blank_t && blank_t->next && addr >= blank_t->next->offset) | |
8476 | blank_t = blank_t->next; | |
8477 | ||
8478 | return blank_t; | |
8479 | } | |
8480 | ||
8481 | static bfd_vma | |
8482 | get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8483 | int overwrite) | |
8484 | { | |
8485 | nds32_elf_blank_t *blank_t; | |
8486 | ||
8487 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8488 | if (!blank_t) | |
8489 | return 0; | |
8490 | ||
8491 | if (overwrite) | |
8492 | *blank_p = blank_t; | |
8493 | ||
8494 | if (addr < blank_t->offset + blank_t->size) | |
8495 | return blank_t->total_size + (addr - blank_t->offset); | |
8496 | else | |
8497 | return blank_t->total_size + blank_t->size; | |
8498 | } | |
8499 | ||
8500 | static bfd_boolean | |
8501 | insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len) | |
8502 | { | |
8503 | nds32_elf_blank_t *blank_t, *blank_t2; | |
8504 | ||
8505 | if (!*blank_p) | |
8506 | { | |
8507 | *blank_p = create_nds32_elf_blank (addr, len); | |
8508 | return *blank_p ? TRUE : FALSE; | |
8509 | } | |
8510 | ||
8511 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8512 | ||
8513 | if (blank_t == NULL) | |
8514 | { | |
8515 | blank_t = create_nds32_elf_blank (addr, len); | |
8516 | if (!blank_t) | |
8517 | return FALSE; | |
8518 | while ((*blank_p)->prev != NULL) | |
8519 | *blank_p = (*blank_p)->prev; | |
8520 | blank_t->next = *blank_p; | |
8521 | (*blank_p)->prev = blank_t; | |
8522 | (*blank_p) = blank_t; | |
8523 | return TRUE; | |
8524 | } | |
8525 | ||
8526 | if (addr < blank_t->offset + blank_t->size) | |
8527 | { | |
8528 | if (addr > blank_t->offset + blank_t->size) | |
8529 | blank_t->size = addr - blank_t->offset; | |
8530 | } | |
8531 | else | |
8532 | { | |
8533 | blank_t2 = create_nds32_elf_blank (addr, len); | |
8534 | if (!blank_t2) | |
8535 | return FALSE; | |
8536 | if (blank_t->next) | |
8537 | { | |
8538 | blank_t->next->prev = blank_t2; | |
8539 | blank_t2->next = blank_t->next; | |
8540 | } | |
8541 | blank_t2->prev = blank_t; | |
8542 | blank_t->next = blank_t2; | |
8543 | *blank_p = blank_t2; | |
8544 | } | |
8545 | ||
8546 | return TRUE; | |
8547 | } | |
8548 | ||
8549 | static bfd_boolean | |
8550 | insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8551 | bfd_vma len) | |
8552 | { | |
8553 | nds32_elf_blank_t *blank_t; | |
8554 | ||
8555 | if (!insert_nds32_elf_blank (blank_p, addr, len)) | |
8556 | return FALSE; | |
8557 | ||
8558 | blank_t = *blank_p; | |
8559 | ||
8560 | if (!blank_t->prev) | |
8561 | { | |
8562 | blank_t->total_size = 0; | |
8563 | blank_t = blank_t->next; | |
8564 | } | |
8565 | ||
8566 | while (blank_t) | |
8567 | { | |
8568 | blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size; | |
8569 | blank_t = blank_t->next; | |
8570 | } | |
8571 | ||
8572 | return TRUE; | |
8573 | } | |
8574 | ||
8575 | static void | |
8576 | calc_nds32_blank_total (nds32_elf_blank_t *blank_p) | |
8577 | { | |
8578 | nds32_elf_blank_t *blank_t; | |
8579 | bfd_vma total_size = 0; | |
8580 | ||
8581 | if (!blank_p) | |
8582 | return; | |
8583 | ||
8584 | blank_t = blank_p; | |
8585 | while (blank_t->prev) | |
8586 | blank_t = blank_t->prev; | |
8587 | while (blank_t) | |
8588 | { | |
8589 | blank_t->total_size = total_size; | |
8590 | total_size += blank_t->size; | |
8591 | blank_t = blank_t->next; | |
8592 | } | |
8593 | } | |
8594 | ||
8595 | static bfd_boolean | |
8596 | nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec, | |
8597 | nds32_elf_blank_t *blank_p) | |
8598 | { | |
8599 | Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */ | |
1c8f6a4d | 8600 | Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */ |
35c08157 KLC |
8601 | Elf_Internal_Sym *isymend; /* Symbol entry iterator. */ |
8602 | unsigned int sec_shndx; /* The section the be relaxed. */ | |
8603 | bfd_byte *contents; /* Contents data of iterating section. */ | |
8604 | Elf_Internal_Rela *internal_relocs; | |
8605 | Elf_Internal_Rela *irel; | |
8606 | Elf_Internal_Rela *irelend; | |
8607 | struct elf_link_hash_entry **sym_hashes; | |
8608 | struct elf_link_hash_entry **end_hashes; | |
8609 | unsigned int symcount; | |
8610 | asection *sect; | |
8611 | nds32_elf_blank_t *blank_t; | |
8612 | nds32_elf_blank_t *blank_t2; | |
8613 | nds32_elf_blank_t *blank_head; | |
8614 | ||
8615 | blank_head = blank_t = blank_p; | |
8616 | while (blank_head->prev != NULL) | |
8617 | blank_head = blank_head->prev; | |
8618 | while (blank_t->next != NULL) | |
8619 | blank_t = blank_t->next; | |
8620 | ||
8621 | if (blank_t->offset + blank_t->size <= sec->size) | |
8622 | { | |
8623 | blank_t->next = create_nds32_elf_blank (sec->size + 4, 0); | |
8624 | blank_t->next->prev = blank_t; | |
8625 | } | |
8626 | if (blank_head->offset > 0) | |
8627 | { | |
8628 | blank_head->prev = create_nds32_elf_blank (0, 0); | |
8629 | blank_head->prev->next = blank_head; | |
8630 | blank_head = blank_head->prev; | |
8631 | } | |
8632 | ||
8633 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
8634 | ||
8635 | /* The deletion must stop at the next ALIGN reloc for an alignment | |
8636 | power larger than the number of bytes we are deleting. */ | |
8637 | ||
8638 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8639 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
8640 | return FALSE; | |
8641 | ||
8642 | if (isym == NULL) | |
8643 | { | |
8644 | isym = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8645 | symtab_hdr->sh_info, 0, NULL, NULL, NULL); | |
8646 | symtab_hdr->contents = (bfd_byte *) isym; | |
8647 | } | |
8648 | ||
8649 | if (isym == NULL || symtab_hdr->sh_info == 0) | |
8650 | return FALSE; | |
8651 | ||
8652 | blank_t = blank_head; | |
8653 | calc_nds32_blank_total (blank_head); | |
8654 | ||
8655 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
8656 | { | |
8657 | /* Adjust all the relocs. */ | |
8658 | ||
8659 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
8660 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL, | |
8661 | TRUE /* keep_memory */); | |
8662 | irelend = internal_relocs + sect->reloc_count; | |
8663 | ||
8664 | blank_t = blank_head; | |
8665 | blank_t2 = blank_head; | |
8666 | ||
8667 | if (!(sect->flags & SEC_RELOC)) | |
8668 | continue; | |
8669 | ||
0c4bd9d9 | 8670 | nds32_get_section_contents (abfd, sect, &contents, TRUE); |
35c08157 KLC |
8671 | |
8672 | for (irel = internal_relocs; irel < irelend; irel++) | |
8673 | { | |
8674 | bfd_vma raddr; | |
8675 | ||
8676 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8 | |
8677 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32 | |
8678 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8679 | { | |
8680 | unsigned long val = 0; | |
1c8f6a4d KLC |
8681 | unsigned long mask; |
8682 | long before, between; | |
6cae483a | 8683 | long offset = 0; |
35c08157 KLC |
8684 | |
8685 | switch (ELF32_R_TYPE (irel->r_info)) | |
8686 | { | |
8687 | case R_NDS32_DIFF8: | |
1c8f6a4d | 8688 | offset = bfd_get_8 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8689 | break; |
8690 | case R_NDS32_DIFF16: | |
1c8f6a4d | 8691 | offset = bfd_get_16 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8692 | break; |
8693 | case R_NDS32_DIFF32: | |
8694 | val = bfd_get_32 (abfd, contents + irel->r_offset); | |
1c8f6a4d KLC |
8695 | /* Get the signed bit and mask for the high part. The |
8696 | gcc will alarm when right shift 32-bit since the | |
8697 | type size of long may be 32-bit. */ | |
8698 | mask = 0 - (val >> 31); | |
8699 | if (mask) | |
8700 | offset = (val | (mask - 0xffffffff)); | |
8701 | else | |
8702 | offset = val; | |
35c08157 KLC |
8703 | break; |
8704 | default: | |
8705 | BFD_ASSERT (0); | |
8706 | } | |
8707 | ||
8708 | /* DIFF value | |
8709 | 0 |encoded in location| | |
8710 | |------------|-------------------|--------- | |
8711 | sym+off(addend) | |
8712 | -- before ---| ***************** | |
8713 | --------------------- between ---| | |
8714 | ||
1c8f6a4d KLC |
8715 | We only care how much data are relax between DIFF, |
8716 | marked as ***. */ | |
35c08157 KLC |
8717 | |
8718 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8719 | between = get_nds32_elf_blank_total (&blank_t, |
8720 | irel->r_addend + offset, 0); | |
35c08157 KLC |
8721 | if (between == before) |
8722 | goto done_adjust_diff; | |
8723 | ||
8724 | switch (ELF32_R_TYPE (irel->r_info)) | |
8725 | { | |
8726 | case R_NDS32_DIFF8: | |
1c8f6a4d KLC |
8727 | bfd_put_8 (abfd, offset - (between - before), |
8728 | contents + irel->r_offset); | |
35c08157 KLC |
8729 | break; |
8730 | case R_NDS32_DIFF16: | |
1c8f6a4d KLC |
8731 | bfd_put_16 (abfd, offset - (between - before), |
8732 | contents + irel->r_offset); | |
35c08157 KLC |
8733 | break; |
8734 | case R_NDS32_DIFF32: | |
1c8f6a4d KLC |
8735 | bfd_put_32 (abfd, offset - (between - before), |
8736 | contents + irel->r_offset); | |
35c08157 KLC |
8737 | break; |
8738 | } | |
8739 | } | |
8740 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128 | |
8741 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8742 | { | |
8743 | bfd_vma val = 0; | |
8744 | unsigned int len = 0; | |
8745 | unsigned long before, between; | |
8746 | bfd_byte *endp, *p; | |
8747 | ||
1c8f6a4d KLC |
8748 | val = read_unsigned_leb128 (abfd, contents + irel->r_offset, |
8749 | &len); | |
35c08157 KLC |
8750 | |
8751 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8752 | between = get_nds32_elf_blank_total (&blank_t, |
8753 | irel->r_addend + val, 0); | |
35c08157 KLC |
8754 | if (between == before) |
8755 | goto done_adjust_diff; | |
8756 | ||
8757 | p = contents + irel->r_offset; | |
8758 | endp = p + len -1; | |
8759 | memset (p, 0x80, len); | |
8760 | *(endp) = 0; | |
8761 | p = write_uleb128 (p, val - (between - before)) - 1; | |
8762 | if (p < endp) | |
8763 | *p |= 0x80; | |
8764 | } | |
8765 | done_adjust_diff: | |
8766 | ||
8767 | if (sec == sect) | |
8768 | { | |
8769 | raddr = irel->r_offset; | |
1c8f6a4d KLC |
8770 | irel->r_offset -= get_nds32_elf_blank_total (&blank_t2, |
8771 | irel->r_offset, 1); | |
35c08157 KLC |
8772 | |
8773 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
8774 | continue; | |
8775 | if (blank_t2 && blank_t2->next | |
1c8f6a4d KLC |
8776 | && (blank_t2->offset > raddr |
8777 | || blank_t2->next->offset <= raddr)) | |
8778 | (*_bfd_error_handler) | |
8779 | (_("%B: %s\n"), abfd, | |
8780 | "Error: search_nds32_elf_blank reports wrong node"); | |
35c08157 KLC |
8781 | |
8782 | /* Mark reloc in deleted portion as NONE. | |
8783 | For some relocs like R_NDS32_LABEL that doesn't modify the | |
8784 | content in the section. R_NDS32_LABEL doesn't belong to the | |
8785 | instruction in the section, so we should preserve it. */ | |
8786 | if (raddr >= blank_t2->offset | |
8787 | && raddr < blank_t2->offset + blank_t2->size | |
8788 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL | |
8789 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN | |
8790 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END | |
8791 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
8792 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND | |
8793 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND) | |
8794 | { | |
8795 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
8796 | R_NDS32_NONE); | |
8797 | continue; | |
8798 | } | |
8799 | } | |
8800 | ||
8801 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE | |
8802 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
8803 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
8804 | continue; | |
8805 | ||
8806 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info | |
8807 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx | |
8808 | && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION) | |
8809 | { | |
8810 | if (irel->r_addend <= sec->size) | |
8811 | irel->r_addend -= | |
8812 | get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1); | |
8813 | } | |
8814 | } | |
8815 | } | |
8816 | ||
8817 | /* Adjust the local symbols defined in this section. */ | |
8818 | blank_t = blank_head; | |
8819 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
8820 | { | |
8821 | if (isym->st_shndx == sec_shndx) | |
8822 | { | |
8823 | if (isym->st_value <= sec->size) | |
8824 | { | |
8825 | bfd_vma ahead; | |
8826 | bfd_vma orig_addr = isym->st_value; | |
8827 | ||
8828 | ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1); | |
8829 | isym->st_value -= ahead; | |
8830 | ||
8831 | /* Adjust function size. */ | |
1c8f6a4d KLC |
8832 | if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC |
8833 | && isym->st_size > 0) | |
8834 | isym->st_size -= | |
8835 | get_nds32_elf_blank_total | |
8836 | (&blank_t, orig_addr + isym->st_size, 0) - ahead; | |
35c08157 KLC |
8837 | } |
8838 | } | |
8839 | } | |
8840 | ||
8841 | /* Now adjust the global symbols defined in this section. */ | |
8842 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
8843 | - symtab_hdr->sh_info); | |
8844 | sym_hashes = elf_sym_hashes (abfd); | |
8845 | end_hashes = sym_hashes + symcount; | |
8846 | blank_t = blank_head; | |
8847 | for (; sym_hashes < end_hashes; sym_hashes++) | |
8848 | { | |
8849 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
8850 | ||
8851 | if ((sym_hash->root.type == bfd_link_hash_defined | |
8852 | || sym_hash->root.type == bfd_link_hash_defweak) | |
8853 | && sym_hash->root.u.def.section == sec) | |
8854 | { | |
8855 | if (sym_hash->root.u.def.value <= sec->size) | |
8856 | { | |
8857 | bfd_vma ahead; | |
8858 | bfd_vma orig_addr = sym_hash->root.u.def.value; | |
8859 | ||
8860 | ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1); | |
8861 | sym_hash->root.u.def.value -= ahead; | |
8862 | ||
8863 | /* Adjust function size. */ | |
8864 | if (sym_hash->type == STT_FUNC) | |
1c8f6a4d KLC |
8865 | sym_hash->size -= |
8866 | get_nds32_elf_blank_total | |
8867 | (&blank_t, orig_addr + sym_hash->size, 0) - ahead; | |
35c08157 KLC |
8868 | |
8869 | } | |
8870 | } | |
8871 | } | |
8872 | ||
8873 | contents = elf_section_data (sec)->this_hdr.contents; | |
8874 | blank_t = blank_head; | |
8875 | while (blank_t->next) | |
8876 | { | |
8877 | /* Actually delete the bytes. */ | |
8878 | ||
8879 | /* If current blank is the last blank overlap with current section, | |
8880 | go to finish process. */ | |
8881 | if (sec->size <= (blank_t->next->offset)) | |
8882 | break; | |
8883 | ||
8884 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8885 | contents + blank_t->offset + blank_t->size, | |
8886 | blank_t->next->offset - (blank_t->offset + blank_t->size)); | |
8887 | ||
8888 | blank_t = blank_t->next; | |
8889 | } | |
8890 | ||
8891 | if (sec->size > (blank_t->offset + blank_t->size)) | |
8892 | { | |
8893 | /* There are remaining code between blank and section boundary. | |
8894 | Move the remaining code to appropriate location. */ | |
8895 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8896 | contents + blank_t->offset + blank_t->size, | |
8897 | sec->size - (blank_t->offset + blank_t->size)); | |
8898 | sec->size -= blank_t->total_size + blank_t->size; | |
8899 | } | |
8900 | else | |
8901 | /* This blank is not entirely included in the section, | |
8902 | reduce the section size by only part of the blank size. */ | |
8903 | sec->size -= blank_t->total_size + (sec->size - blank_t->offset); | |
8904 | ||
8905 | while (blank_head) | |
8906 | { | |
8907 | blank_t = blank_head; | |
8908 | blank_head = blank_head->next; | |
8909 | remove_nds32_elf_blank (blank_t); | |
8910 | } | |
8911 | ||
8912 | return TRUE; | |
8913 | } | |
8914 | ||
8915 | /* Get the contents of a section. */ | |
8916 | ||
8917 | static int | |
0c4bd9d9 KLC |
8918 | nds32_get_section_contents (bfd *abfd, asection *sec, |
8919 | bfd_byte **contents_p, bfd_boolean cache) | |
35c08157 KLC |
8920 | { |
8921 | /* Get the section contents. */ | |
8922 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8923 | *contents_p = elf_section_data (sec)->this_hdr.contents; | |
8924 | else | |
8925 | { | |
8926 | if (!bfd_malloc_and_get_section (abfd, sec, contents_p)) | |
8927 | return FALSE; | |
0c4bd9d9 KLC |
8928 | if (cache) |
8929 | elf_section_data (sec)->this_hdr.contents = *contents_p; | |
35c08157 KLC |
8930 | } |
8931 | ||
8932 | return TRUE; | |
8933 | } | |
8934 | ||
8935 | /* Get the contents of the internal symbol of abfd. */ | |
8936 | ||
8937 | static int | |
8938 | nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED, | |
8939 | Elf_Internal_Sym **isymbuf_p) | |
8940 | { | |
8941 | Elf_Internal_Shdr *symtab_hdr; | |
8942 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8943 | ||
8944 | /* Read this BFD's local symbols if we haven't done so already. */ | |
8945 | if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0) | |
8946 | { | |
8947 | *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8948 | if (*isymbuf_p == NULL) | |
8949 | { | |
8950 | *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8951 | symtab_hdr->sh_info, 0, | |
8952 | NULL, NULL, NULL); | |
8953 | if (*isymbuf_p == NULL) | |
8954 | return FALSE; | |
8955 | } | |
8956 | } | |
8957 | symtab_hdr->contents = (bfd_byte *) (*isymbuf_p); | |
8958 | ||
8959 | return TRUE; | |
8960 | } | |
8961 | ||
8962 | /* Range of small data. */ | |
1c8f6a4d KLC |
8963 | static bfd_vma sdata_range[2][2]; |
8964 | static bfd_vma const sdata_init_range[2] = | |
8965 | { ACCURATE_12BIT_S1, ACCURATE_19BIT }; | |
35c08157 KLC |
8966 | |
8967 | static int | |
8968 | nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED, | |
8969 | bfd_byte *contents, bfd_vma addr) | |
8970 | { | |
8971 | unsigned long insn = bfd_getb32 (contents + addr); | |
8972 | ||
8973 | if (insn & 0x80000000) | |
8974 | return 2; | |
8975 | ||
8976 | return 4; | |
8977 | } | |
8978 | ||
8979 | /* Set the gp relax range. We have to measure the safe range | |
8980 | to do gp relaxation. */ | |
8981 | ||
8982 | static void | |
8983 | relax_range_measurement (bfd *abfd) | |
8984 | { | |
8985 | asection *sec_f, *sec_b; | |
8986 | /* For upper bound. */ | |
8987 | bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize; | |
8988 | bfd_vma align; | |
35c08157 KLC |
8989 | static int decide_relax_range = 0; |
8990 | int i; | |
1c8f6a4d | 8991 | int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]); |
35c08157 KLC |
8992 | |
8993 | if (decide_relax_range) | |
8994 | return; | |
8995 | decide_relax_range = 1; | |
8996 | ||
8997 | if (sda_rela_sec == NULL) | |
8998 | { | |
8999 | /* Since there is no data sections, we assume the range is page size. */ | |
1c8f6a4d | 9000 | for (i = 0; i < range_number; i++) |
35c08157 KLC |
9001 | { |
9002 | sdata_range[i][0] = sdata_init_range[i] - 0x1000; | |
9003 | sdata_range[i][1] = sdata_init_range[i] - 0x1000; | |
9004 | } | |
9005 | return; | |
9006 | } | |
9007 | ||
9008 | /* Get the biggest alignment power after the gp located section. */ | |
9009 | sec_f = sda_rela_sec->output_section; | |
9010 | sec_b = sec_f->next; | |
9011 | align = 0; | |
9012 | while (sec_b != NULL) | |
9013 | { | |
9014 | if ((unsigned)(1 << sec_b->alignment_power) > align) | |
9015 | align = (1 << sec_b->alignment_power); | |
9016 | sec_b = sec_b->next; | |
9017 | } | |
9018 | ||
9019 | /* I guess we can not determine the section before | |
9020 | gp located section, so we assume the align is max page size. */ | |
1c8f6a4d | 9021 | for (i = 0; i < range_number; i++) |
35c08157 | 9022 | { |
1c8f6a4d | 9023 | sdata_range[i][1] = sdata_init_range[i] - align; |
35c08157 | 9024 | BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]); |
1c8f6a4d | 9025 | sdata_range[i][0] = sdata_init_range[i] - maxpgsz; |
35c08157 KLC |
9026 | BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]); |
9027 | } | |
9028 | } | |
9029 | ||
9030 | /* These are macros used to check flags encoded in r_addend. | |
9031 | They are only used by nds32_elf_relax_section (). */ | |
9032 | #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff) | |
9033 | #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000) | |
9034 | #define IS_OPTIMIZE(addend) ((addend) & 0x40000000) | |
9035 | #define IS_16BIT_ON(addend) ((addend) & 0x20000000) | |
9036 | ||
1c8f6a4d KLC |
9037 | /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */ |
9038 | ||
35c08157 | 9039 | static bfd_boolean |
1c8f6a4d KLC |
9040 | nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
9041 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9042 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9043 | Elf_Internal_Shdr *symtab_hdr) | |
9044 | { | |
9045 | /* There are 3 variations for LONGCALL1 | |
9046 | case 4-4-2; 16-bit on, optimize off or optimize for space | |
9047 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9048 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9049 | jral5 ta ; | |
9050 | ||
9051 | case 4-4-4; 16-bit off, optimize don't care | |
9052 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9053 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9054 | jral ta ; | |
9055 | ||
9056 | case 4-4-4; 16-bit on, optimize for speed | |
9057 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9058 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9059 | jral ta ; | |
9060 | Check code for -mlong-calls output. */ | |
9061 | ||
9062 | /* Get the reloc for the address from which the register is | |
9063 | being loaded. This reloc will tell us which function is | |
9064 | actually being called. */ | |
9065 | ||
9066 | bfd_vma laddr; | |
9067 | int seq_len; /* Original length of instruction sequence. */ | |
35c08157 | 9068 | uint32_t insn; |
1c8f6a4d KLC |
9069 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; |
9070 | int pic_ext_target = 0; | |
9071 | bfd_signed_vma foff; | |
35c08157 | 9072 | uint16_t insn16; |
35c08157 | 9073 | |
1c8f6a4d KLC |
9074 | irelend = internal_relocs + sec->reloc_count; |
9075 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9076 | laddr = irel->r_offset; | |
9077 | *insn_len = seq_len; | |
35c08157 | 9078 | |
1c8f6a4d KLC |
9079 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9080 | R_NDS32_HI20_RELA, laddr); | |
9081 | lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9082 | R_NDS32_LO12S0_ORI_RELA, | |
9083 | laddr + 4); | |
35c08157 | 9084 | |
1c8f6a4d | 9085 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
35c08157 KLC |
9086 | { |
9087 | (*_bfd_error_handler) | |
1c8f6a4d KLC |
9088 | ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized" |
9089 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9090 | return FALSE; | |
35c08157 KLC |
9091 | } |
9092 | ||
1c8f6a4d KLC |
9093 | /* Get the value of the symbol referred to by the reloc. */ |
9094 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9095 | &pic_ext_target); | |
35c08157 | 9096 | |
1c8f6a4d KLC |
9097 | /* This condition only happened when symbol is undefined. */ |
9098 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
9099 | || foff >= CONSERVATIVE_24BIT_S1) | |
9100 | return FALSE; | |
35c08157 | 9101 | |
1c8f6a4d KLC |
9102 | /* Relax to: jal symbol; 25_PCREL */ |
9103 | /* For simplicity of coding, we are going to modify the section | |
9104 | contents, the section relocs, and the BFD symbol table. We | |
9105 | must tell the rest of the code not to free up this | |
9106 | information. It would be possible to instead create a table | |
9107 | of changes which have to be made, as is done in coff-mips.c; | |
9108 | that would be more work, but would require less memory when | |
9109 | the linker is run. */ | |
9110 | ||
9111 | /* Replace the long call with a jal. */ | |
9112 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9113 | R_NDS32_25_PCREL_RELA); | |
9114 | irel->r_addend = hi_irelfn->r_addend; | |
9115 | ||
9116 | /* We don't resolve this here but resolve it in relocate_section. */ | |
9117 | insn = INSN_JAL; | |
9118 | bfd_putb32 (insn, contents + irel->r_offset); | |
9119 | ||
9120 | hi_irelfn->r_info = | |
9121 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9122 | lo_irelfn->r_info = | |
9123 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
9124 | *insn_len = 4; | |
9125 | ||
9126 | if (seq_len & 0x2) | |
9127 | { | |
9128 | insn16 = NDS32_NOP16; | |
9129 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9130 | lo_irelfn->r_info = | |
9131 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
9132 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9133 | *insn_len += 2; | |
9134 | } | |
9135 | return TRUE; | |
9136 | } | |
35c08157 | 9137 | |
1c8f6a4d KLC |
9138 | #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000) |
9139 | /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */ | |
35c08157 | 9140 | |
1c8f6a4d KLC |
9141 | static bfd_boolean |
9142 | nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9143 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9144 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9145 | Elf_Internal_Shdr *symtab_hdr) | |
9146 | { | |
9147 | /* bltz rt, .L1 ; LONGCALL2 | |
9148 | jal symbol ; 25_PCREL | |
9149 | .L1: */ | |
35c08157 | 9150 | |
1c8f6a4d KLC |
9151 | /* Get the reloc for the address from which the register is |
9152 | being loaded. This reloc will tell us which function is | |
9153 | actually being called. */ | |
35c08157 | 9154 | |
1c8f6a4d KLC |
9155 | bfd_vma laddr; |
9156 | uint32_t insn; | |
9157 | Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend; | |
9158 | int pic_ext_target = 0; | |
9159 | bfd_signed_vma foff; | |
35c08157 | 9160 | |
1c8f6a4d KLC |
9161 | irelend = internal_relocs + sec->reloc_count; |
9162 | laddr = irel->r_offset; | |
9163 | i1_irelfn = | |
9164 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9165 | R_NDS32_25_PCREL_RELA, laddr + 4); | |
9166 | ||
9167 | if (i1_irelfn == irelend) | |
35c08157 | 9168 | { |
1c8f6a4d KLC |
9169 | (*_bfd_error_handler) |
9170 | ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized" | |
9171 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9172 | return FALSE; | |
35c08157 KLC |
9173 | } |
9174 | ||
1c8f6a4d | 9175 | insn = bfd_getb32 (contents + laddr); |
35c08157 | 9176 | |
1c8f6a4d KLC |
9177 | /* Get the value of the symbol referred to by the reloc. */ |
9178 | foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr, | |
9179 | &pic_ext_target); | |
35c08157 | 9180 | |
1c8f6a4d KLC |
9181 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
9182 | || foff >= CONSERVATIVE_16BIT_S1) | |
9183 | return FALSE; | |
35c08157 | 9184 | |
1c8f6a4d KLC |
9185 | /* Relax to bgezal rt, label ; 17_PCREL |
9186 | or bltzal rt, label ; 17_PCREL */ | |
9187 | ||
9188 | /* Convert to complimentary conditional call. */ | |
9189 | insn = CONVERT_CONDITION_CALL (insn); | |
9190 | ||
9191 | /* For simplicity of coding, we are going to modify the section | |
9192 | contents, the section relocs, and the BFD symbol table. We | |
9193 | must tell the rest of the code not to free up this | |
9194 | information. It would be possible to instead create a table | |
9195 | of changes which have to be made, as is done in coff-mips.c; | |
9196 | that would be more work, but would require less memory when | |
9197 | the linker is run. */ | |
9198 | ||
9199 | /* Clean unnessary relocations. */ | |
9200 | i1_irelfn->r_info = | |
9201 | ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE); | |
9202 | cond_irelfn = | |
9203 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9204 | R_NDS32_17_PCREL_RELA, laddr); | |
9205 | if (cond_irelfn != irelend) | |
9206 | cond_irelfn->r_info = | |
9207 | ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE); | |
9208 | ||
9209 | /* Replace the long call with a bgezal. */ | |
9210 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), | |
9211 | R_NDS32_17_PCREL_RELA); | |
9212 | irel->r_addend = i1_irelfn->r_addend; | |
9213 | ||
9214 | bfd_putb32 (insn, contents + irel->r_offset); | |
9215 | ||
9216 | *insn_len = 4; | |
9217 | return TRUE; | |
9218 | } | |
35c08157 | 9219 | |
1c8f6a4d KLC |
9220 | /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */ |
9221 | ||
9222 | static bfd_boolean | |
9223 | nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9224 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9225 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9226 | Elf_Internal_Shdr *symtab_hdr) | |
9227 | { | |
9228 | /* There are 3 variations for LONGCALL3 | |
9229 | case 4-4-4-2; 16-bit on, optimize off or optimize for space | |
9230 | bltz rt, $1 ; LONGCALL3 | |
9231 | sethi ta, hi20(symbol) ; HI20 | |
9232 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9233 | jral5 ta ; | |
9234 | $1 | |
9235 | ||
9236 | case 4-4-4-4; 16-bit off, optimize don't care | |
9237 | bltz rt, $1 ; LONGCALL3 | |
9238 | sethi ta, hi20(symbol) ; HI20 | |
9239 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9240 | jral ta ; | |
9241 | $1 | |
9242 | ||
9243 | case 4-4-4-4; 16-bit on, optimize for speed | |
9244 | bltz rt, $1 ; LONGCALL3 | |
9245 | sethi ta, hi20(symbol) ; HI20 | |
9246 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9247 | jral ta ; | |
9248 | $1 */ | |
9249 | ||
9250 | /* Get the reloc for the address from which the register is | |
9251 | being loaded. This reloc will tell us which function is | |
9252 | actually being called. */ | |
9253 | ||
9254 | bfd_vma laddr; | |
9255 | int seq_len; /* Original length of instruction sequence. */ | |
9256 | uint32_t insn; | |
9257 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
9258 | int pic_ext_target = 0; | |
9259 | bfd_signed_vma foff; | |
9260 | uint16_t insn16; | |
9261 | ||
9262 | irelend = internal_relocs + sec->reloc_count; | |
9263 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9264 | laddr = irel->r_offset; | |
9265 | *insn_len = seq_len; | |
9266 | ||
9267 | hi_irelfn = | |
9268 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9269 | R_NDS32_HI20_RELA, laddr + 4); | |
9270 | lo_irelfn = | |
9271 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9272 | R_NDS32_LO12S0_ORI_RELA, laddr + 8); | |
9273 | ||
9274 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9275 | { | |
9276 | (*_bfd_error_handler) | |
9277 | ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized" | |
9278 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9279 | return FALSE; | |
35c08157 KLC |
9280 | } |
9281 | ||
1c8f6a4d KLC |
9282 | /* Get the value of the symbol referred to by the reloc. */ |
9283 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9284 | &pic_ext_target); | |
35c08157 | 9285 | |
1c8f6a4d KLC |
9286 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9287 | || foff >= CONSERVATIVE_24BIT_S1) | |
9288 | return FALSE; | |
35c08157 | 9289 | |
1c8f6a4d KLC |
9290 | insn = bfd_getb32 (contents + laddr); |
9291 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
35c08157 | 9292 | { |
1c8f6a4d KLC |
9293 | /* Relax to bgezal rt, label ; 17_PCREL |
9294 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 9295 | |
1c8f6a4d KLC |
9296 | /* Convert to complimentary conditional call. */ |
9297 | insn = CONVERT_CONDITION_CALL (insn); | |
9298 | bfd_putb32 (insn, contents + irel->r_offset); | |
35c08157 | 9299 | |
1c8f6a4d KLC |
9300 | *insn_len = 4; |
9301 | irel->r_info = | |
9302 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9303 | hi_irelfn->r_info = | |
9304 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9305 | lo_irelfn->r_info = | |
9306 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
9307 | ||
9308 | cond_irelfn = | |
9309 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9310 | R_NDS32_17_PCREL_RELA, laddr); | |
9311 | if (cond_irelfn != irelend) | |
35c08157 | 9312 | { |
1c8f6a4d KLC |
9313 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9314 | R_NDS32_17_PCREL_RELA); | |
9315 | cond_irelfn->r_addend = hi_irelfn->r_addend; | |
35c08157 | 9316 | } |
1c8f6a4d KLC |
9317 | |
9318 | if (seq_len & 0x2) | |
35c08157 | 9319 | { |
1c8f6a4d KLC |
9320 | insn16 = NDS32_NOP16; |
9321 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9322 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9323 | R_NDS32_INSN16); | |
9324 | hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9325 | insn_len += 2; | |
35c08157 | 9326 | } |
1c8f6a4d KLC |
9327 | } |
9328 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
9329 | { | |
9330 | /* Relax to the following instruction sequence | |
9331 | bltz rt, $1 ; LONGCALL2 | |
9332 | jal symbol ; 25_PCREL | |
9333 | $1 */ | |
9334 | *insn_len = 8; | |
9335 | insn = INSN_JAL; | |
9336 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
35c08157 | 9337 | |
1c8f6a4d KLC |
9338 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9339 | R_NDS32_25_PCREL_RELA); | |
9340 | irel->r_info = | |
9341 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2); | |
9342 | ||
9343 | lo_irelfn->r_info = | |
9344 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9345 | |
1c8f6a4d | 9346 | if (seq_len & 0x2) |
35c08157 | 9347 | { |
1c8f6a4d KLC |
9348 | insn16 = NDS32_NOP16; |
9349 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9350 | lo_irelfn->r_info = | |
9351 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
9352 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9353 | insn_len += 2; | |
9354 | } | |
9355 | } | |
9356 | return TRUE; | |
9357 | } | |
35c08157 | 9358 | |
1c8f6a4d | 9359 | /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */ |
35c08157 | 9360 | |
1c8f6a4d KLC |
9361 | static bfd_boolean |
9362 | nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9363 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9364 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9365 | Elf_Internal_Shdr *symtab_hdr) | |
9366 | { | |
9367 | /* There are 3 variations for LONGJUMP1 | |
9368 | case 4-4-2; 16-bit bit on, optimize off or optimize for space | |
9369 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9370 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9371 | jr5 ta ; | |
9372 | ||
9373 | case 4-4-4; 16-bit off, optimize don't care | |
9374 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9375 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9376 | jr ta ; | |
9377 | ||
9378 | case 4-4-4; 16-bit on, optimize for speed | |
9379 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9380 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9381 | jr ta ; */ | |
9382 | ||
9383 | /* Get the reloc for the address from which the register is | |
9384 | being loaded. This reloc will tell us which function is | |
9385 | actually being called. */ | |
9386 | ||
9387 | bfd_vma laddr; | |
9388 | int seq_len; /* Original length of instruction sequence. */ | |
9389 | int insn16_on; /* 16-bit on/off. */ | |
9390 | uint32_t insn; | |
9391 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; | |
9392 | int pic_ext_target = 0; | |
9393 | bfd_signed_vma foff; | |
9394 | uint16_t insn16; | |
9395 | unsigned long reloc; | |
35c08157 | 9396 | |
1c8f6a4d KLC |
9397 | irelend = internal_relocs + sec->reloc_count; |
9398 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9399 | laddr = irel->r_offset; | |
9400 | *insn_len = seq_len; | |
9401 | insn16_on = IS_16BIT_ON (irel->r_addend); | |
9402 | ||
9403 | hi_irelfn = | |
9404 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9405 | R_NDS32_HI20_RELA, laddr); | |
9406 | lo_irelfn = | |
9407 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9408 | R_NDS32_LO12S0_ORI_RELA, laddr + 4); | |
9409 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9410 | { | |
9411 | (*_bfd_error_handler) | |
9412 | ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized" | |
9413 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9414 | return FALSE; | |
9415 | } | |
35c08157 | 9416 | |
1c8f6a4d KLC |
9417 | /* Get the value of the symbol referred to by the reloc. */ |
9418 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9419 | &pic_ext_target); | |
35c08157 | 9420 | |
1c8f6a4d KLC |
9421 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
9422 | || foff < -CONSERVATIVE_24BIT_S1) | |
9423 | return FALSE; | |
35c08157 | 9424 | |
1c8f6a4d KLC |
9425 | if (insn16_on && foff >= -ACCURATE_8BIT_S1 |
9426 | && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2)) | |
9427 | { | |
9428 | /* j8 label */ | |
9429 | /* 16-bit on, but not optimized for speed. */ | |
9430 | reloc = R_NDS32_9_PCREL_RELA; | |
9431 | insn16 = INSN_J8; | |
9432 | bfd_putb16 (insn16, contents + irel->r_offset); | |
9433 | *insn_len = 2; | |
9434 | irel->r_info = | |
9435 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
9436 | } | |
9437 | else | |
9438 | { | |
9439 | /* j label */ | |
9440 | reloc = R_NDS32_25_PCREL_RELA; | |
9441 | insn = INSN_J; | |
9442 | bfd_putb32 (insn, contents + irel->r_offset); | |
9443 | *insn_len = 4; | |
9444 | irel->r_info = | |
9445 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16); | |
9446 | irel->r_addend = 0; | |
9447 | } | |
35c08157 | 9448 | |
1c8f6a4d KLC |
9449 | hi_irelfn->r_info = |
9450 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9451 | lo_irelfn->r_info = | |
9452 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9453 | |
1c8f6a4d KLC |
9454 | if ((seq_len & 0x2) && ((*insn_len & 2) == 0)) |
9455 | { | |
9456 | insn16 = NDS32_NOP16; | |
9457 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9458 | lo_irelfn->r_info = | |
9459 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9460 | R_NDS32_INSN16); | |
9461 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9462 | *insn_len += 2; | |
9463 | } | |
9464 | return TRUE; | |
9465 | } | |
9466 | ||
9467 | /* Revert condition branch. This function does not check if the input | |
9468 | instruction is condition branch or not. */ | |
9469 | ||
9470 | static void | |
9471 | nds32_elf_convert_branch (uint16_t insn16, uint32_t insn, | |
9472 | uint16_t *re_insn16, uint32_t *re_insn) | |
9473 | { | |
9474 | uint32_t comp_insn = 0; | |
9475 | uint16_t comp_insn16 = 0; | |
9476 | ||
9477 | if (insn) | |
9478 | { | |
9479 | if (N32_OP6 (insn) == N32_OP6_BR1) | |
9480 | { | |
9481 | /* beqs label. */ | |
9482 | comp_insn = (insn ^ 0x4000) & 0xffffc000; | |
9483 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5) | |
35c08157 | 9484 | { |
1c8f6a4d KLC |
9485 | /* Insn can be contracted to 16-bit implied r5. */ |
9486 | comp_insn16 = | |
9487 | (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38; | |
9488 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
35c08157 | 9489 | } |
1c8f6a4d KLC |
9490 | } |
9491 | else if (N32_OP6 (insn) == N32_OP6_BR3) | |
9492 | { | |
9493 | /* bnec $ta, imm11, label. */ | |
9494 | comp_insn = (insn ^ 0x80000) & 0xffffff00; | |
9495 | } | |
9496 | else | |
9497 | { | |
9498 | comp_insn = (insn ^ 0x10000) & 0xffffc000; | |
9499 | if (N32_BR2_SUB (insn) == N32_BR2_BEQZ | |
9500 | || N32_BR2_SUB (insn) == N32_BR2_BNEZ) | |
35c08157 | 9501 | { |
1c8f6a4d | 9502 | if (N32_IS_RT3 (insn)) |
35c08157 | 9503 | { |
1c8f6a4d KLC |
9504 | /* Insn can be contracted to 16-bit. */ |
9505 | comp_insn16 = | |
9506 | (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38; | |
9507 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
9508 | } | |
9509 | else if (N32_RT5 (insn) == REG_R15) | |
9510 | { | |
9511 | /* Insn can be contracted to 16-bit. */ | |
9512 | comp_insn16 = | |
9513 | (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38; | |
35c08157 | 9514 | } |
35c08157 KLC |
9515 | } |
9516 | } | |
1c8f6a4d KLC |
9517 | } |
9518 | else | |
9519 | { | |
9520 | switch ((insn16 & 0xf000) >> 12) | |
35c08157 | 9521 | { |
1c8f6a4d KLC |
9522 | case 0xc: |
9523 | /* beqz38 or bnez38 */ | |
9524 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9525 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ; | |
9526 | comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20; | |
9527 | break; | |
35c08157 | 9528 | |
1c8f6a4d KLC |
9529 | case 0xd: |
9530 | /* beqs38 or bnes38 */ | |
9531 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9532 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ; | |
9533 | comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20) | |
9534 | | (REG_R5 << 15); | |
9535 | break; | |
35c08157 | 9536 | |
1c8f6a4d KLC |
9537 | case 0xe: |
9538 | /* beqzS8 or bnezS8 */ | |
9539 | comp_insn16 = (insn16 ^ 0x0100) & 0xff00; | |
9540 | comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ; | |
9541 | comp_insn |= REG_R15 << 20; | |
9542 | break; | |
35c08157 | 9543 | |
1c8f6a4d KLC |
9544 | default: |
9545 | break; | |
9546 | } | |
9547 | } | |
9548 | if (comp_insn && re_insn) | |
9549 | *re_insn = comp_insn; | |
9550 | if (comp_insn16 && re_insn16) | |
9551 | *re_insn16 = comp_insn16; | |
9552 | } | |
35c08157 | 9553 | |
1c8f6a4d | 9554 | /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */ |
35c08157 | 9555 | |
1c8f6a4d KLC |
9556 | static bfd_boolean |
9557 | nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9558 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9559 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9560 | Elf_Internal_Shdr *symtab_hdr) | |
9561 | { | |
9562 | /* There are 3 variations for LONGJUMP2 | |
9563 | case 2-4; 1st insn convertible, 16-bit on, | |
9564 | optimize off or optimize for space | |
9565 | bnes38 rt, ra, $1 ; LONGJUMP2 | |
9566 | j label ; 25_PCREL | |
9567 | $1: | |
9568 | ||
9569 | case 4-4; 1st insn not convertible | |
9570 | bne rt, ra, $1 ; LONGJUMP2 | |
9571 | j label ; 25_PCREL | |
9572 | $1: | |
9573 | ||
9574 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9575 | bne rt, ra, $1 ; LONGJUMP2 | |
9576 | j label ; 25_PCREL | |
9577 | $1: */ | |
9578 | ||
9579 | /* Get the reloc for the address from which the register is | |
9580 | being loaded. This reloc will tell us which function is | |
9581 | actually being called. */ | |
9582 | ||
9583 | bfd_vma laddr; | |
9584 | int seq_len; /* Original length of instruction sequence. */ | |
9585 | Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend; | |
9586 | int pic_ext_target = 0, first_size; | |
9587 | unsigned int i; | |
9588 | bfd_signed_vma foff; | |
9589 | uint32_t insn, re_insn = 0; | |
9590 | uint16_t insn16, re_insn16 = 0; | |
9591 | unsigned long reloc, cond_reloc; | |
35c08157 | 9592 | |
1c8f6a4d KLC |
9593 | enum elf_nds32_reloc_type checked_types[] = |
9594 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
35c08157 | 9595 | |
1c8f6a4d KLC |
9596 | irelend = internal_relocs + sec->reloc_count; |
9597 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9598 | laddr = irel->r_offset; | |
9599 | *insn_len = seq_len; | |
9600 | first_size = (seq_len == 6) ? 2 : 4; | |
9601 | ||
9602 | i2_irelfn = | |
9603 | find_relocs_at_address_addr (irel, internal_relocs, | |
9604 | irelend, R_NDS32_25_PCREL_RELA, | |
9605 | laddr + first_size); | |
9606 | ||
9607 | for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++) | |
9608 | { | |
9609 | cond_irelfn = | |
9610 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9611 | checked_types[i], laddr); | |
9612 | if (cond_irelfn != irelend) | |
9613 | break; | |
9614 | } | |
35c08157 | 9615 | |
1c8f6a4d KLC |
9616 | if (i2_irelfn == irelend || cond_irelfn == irelend) |
9617 | { | |
9618 | (*_bfd_error_handler) | |
9619 | ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized" | |
9620 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9621 | return FALSE; | |
9622 | } | |
35c08157 | 9623 | |
1c8f6a4d KLC |
9624 | /* Get the value of the symbol referred to by the reloc. */ |
9625 | foff = | |
9626 | calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr, | |
9627 | &pic_ext_target); | |
9628 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 | |
9629 | || foff >= CONSERVATIVE_16BIT_S1) | |
9630 | return FALSE; | |
35c08157 | 9631 | |
1c8f6a4d KLC |
9632 | /* Get the all corresponding instructions. */ |
9633 | if (first_size == 4) | |
9634 | { | |
9635 | insn = bfd_getb32 (contents + laddr); | |
9636 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9637 | } | |
9638 | else | |
9639 | { | |
9640 | insn16 = bfd_getb16 (contents + laddr); | |
9641 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9642 | } | |
35c08157 | 9643 | |
1c8f6a4d KLC |
9644 | if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size) |
9645 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9646 | { | |
9647 | if (first_size == 4) | |
9648 | { | |
9649 | /* Don't convert it to 16-bit now, keep this as relaxable for | |
9650 | ``label reloc; INSN16''. */ | |
35c08157 | 9651 | |
1c8f6a4d KLC |
9652 | /* Save comp_insn32 to buffer. */ |
9653 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9654 | *insn_len = 4; | |
9655 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9656 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9657 | cond_reloc = R_NDS32_INSN16; | |
9658 | } | |
9659 | else | |
9660 | { | |
9661 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9662 | *insn_len = 2; | |
9663 | reloc = R_NDS32_9_PCREL_RELA; | |
9664 | cond_reloc = R_NDS32_NONE; | |
9665 | } | |
9666 | } | |
9667 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9668 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9669 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9670 | { | |
9671 | /* beqs label ; 15_PCREL */ | |
9672 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9673 | *insn_len = 4; | |
9674 | reloc = R_NDS32_15_PCREL_RELA; | |
9675 | cond_reloc = R_NDS32_NONE; | |
9676 | } | |
9677 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9678 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9679 | && foff < CONSERVATIVE_16BIT_S1) | |
9680 | { | |
9681 | /* beqz label ; 17_PCREL */ | |
9682 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9683 | *insn_len = 4; | |
9684 | reloc = R_NDS32_17_PCREL_RELA; | |
9685 | cond_reloc = R_NDS32_NONE; | |
9686 | } | |
9687 | else | |
9688 | return FALSE; | |
35c08157 | 9689 | |
1c8f6a4d KLC |
9690 | /* Set all relocations. */ |
9691 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc); | |
9692 | irel->r_addend = i2_irelfn->r_addend; | |
35c08157 | 9693 | |
1c8f6a4d KLC |
9694 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), |
9695 | cond_reloc); | |
9696 | cond_irelfn->r_addend = 0; | |
35c08157 | 9697 | |
1c8f6a4d KLC |
9698 | if ((seq_len ^ *insn_len ) & 0x2) |
9699 | { | |
9700 | insn16 = NDS32_NOP16; | |
9701 | bfd_putb16 (insn16, contents + irel->r_offset + 4); | |
9702 | i2_irelfn->r_offset = 4; | |
9703 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9704 | R_NDS32_INSN16); | |
9705 | i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9706 | *insn_len += 2; | |
9707 | } | |
9708 | else | |
9709 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9710 | R_NDS32_NONE); | |
9711 | return TRUE; | |
9712 | } | |
35c08157 | 9713 | |
1c8f6a4d | 9714 | /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */ |
35c08157 | 9715 | |
1c8f6a4d KLC |
9716 | static bfd_boolean |
9717 | nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9718 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9719 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9720 | Elf_Internal_Shdr *symtab_hdr) | |
9721 | { | |
9722 | /* There are 5 variations for LONGJUMP3 | |
9723 | case 1: 2-4-4-2; 1st insn convertible, 16-bit on, | |
9724 | optimize off or optimize for space | |
9725 | bnes38 rt, ra, $1 ; LONGJUMP3 | |
9726 | sethi ta, hi20(symbol) ; HI20 | |
9727 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9728 | jr5 ta ; | |
9729 | $1: ; | |
9730 | ||
9731 | case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed | |
9732 | bnes38 rt, ra, $1 ; LONGJUMP3 | |
9733 | sethi ta, hi20(symbol) ; HI20 | |
9734 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9735 | jr5 ta ; | |
9736 | $1: ; LABEL | |
9737 | ||
9738 | case 3: 4-4-4-2; 1st insn not convertible, 16-bit on, | |
9739 | optimize off or optimize for space | |
9740 | bne rt, ra, $1 ; LONGJUMP3 | |
9741 | sethi ta, hi20(symbol) ; HI20 | |
9742 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9743 | jr5 ta ; | |
9744 | $1: ; | |
9745 | ||
9746 | case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care | |
9747 | 16-bit off if no INSN16 | |
9748 | bne rt, ra, $1 ; LONGJUMP3 | |
9749 | sethi ta, hi20(symbol) ; HI20 | |
9750 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9751 | jr ta ; | |
9752 | $1: ; | |
9753 | ||
9754 | case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed | |
9755 | 16-bit off if no INSN16 | |
9756 | bne rt, ra, $1 ; LONGJUMP3 | |
9757 | sethi ta, hi20(symbol) ; HI20 | |
9758 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9759 | jr ta ; | |
9760 | $1: ; LABEL */ | |
9761 | ||
9762 | /* Get the reloc for the address from which the register is | |
9763 | being loaded. This reloc will tell us which function is | |
9764 | actually being called. */ | |
9765 | enum elf_nds32_reloc_type checked_types[] = | |
9766 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
9767 | ||
9768 | int reloc_off = 0, cond_removed = 0, convertible; | |
9769 | bfd_vma laddr; | |
9770 | int seq_len; /* Original length of instruction sequence. */ | |
9771 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
9772 | int pic_ext_target = 0, first_size; | |
9773 | unsigned int i; | |
9774 | bfd_signed_vma foff; | |
9775 | uint32_t insn, re_insn = 0; | |
9776 | uint16_t insn16, re_insn16 = 0; | |
9777 | unsigned long reloc, cond_reloc; | |
35c08157 | 9778 | |
1c8f6a4d KLC |
9779 | irelend = internal_relocs + sec->reloc_count; |
9780 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9781 | laddr = irel->r_offset; | |
9782 | *insn_len = seq_len; | |
35c08157 | 9783 | |
1c8f6a4d | 9784 | convertible = IS_1ST_CONVERT (irel->r_addend); |
35c08157 | 9785 | |
1c8f6a4d KLC |
9786 | if (convertible) |
9787 | first_size = 2; | |
9788 | else | |
9789 | first_size = 4; | |
9790 | ||
9791 | /* Get all needed relocations. */ | |
9792 | hi_irelfn = | |
9793 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9794 | R_NDS32_HI20_RELA, laddr + first_size); | |
9795 | lo_irelfn = | |
9796 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9797 | R_NDS32_LO12S0_ORI_RELA, | |
9798 | laddr + first_size + 4); | |
9799 | ||
9800 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
9801 | { | |
9802 | cond_irelfn = | |
9803 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9804 | checked_types[i], laddr); | |
9805 | if (cond_irelfn != irelend) | |
9806 | break; | |
9807 | } | |
35c08157 | 9808 | |
1c8f6a4d KLC |
9809 | if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend) |
9810 | { | |
9811 | (*_bfd_error_handler) | |
9812 | ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized" | |
9813 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9814 | return FALSE; | |
9815 | } | |
35c08157 | 9816 | |
1c8f6a4d KLC |
9817 | /* Get the value of the symbol referred to by the reloc. */ |
9818 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9819 | &pic_ext_target); | |
35c08157 | 9820 | |
1c8f6a4d KLC |
9821 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9822 | || foff >= CONSERVATIVE_24BIT_S1) | |
9823 | return FALSE; | |
35c08157 | 9824 | |
1c8f6a4d KLC |
9825 | /* Get the all corresponding instructions. */ |
9826 | if (first_size == 4) | |
9827 | { | |
9828 | insn = bfd_getb32 (contents + laddr); | |
9829 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9830 | } | |
9831 | else | |
9832 | { | |
9833 | insn16 = bfd_getb16 (contents + laddr); | |
9834 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9835 | } | |
35c08157 | 9836 | |
1c8f6a4d KLC |
9837 | /* For simplicity of coding, we are going to modify the section |
9838 | contents, the section relocs, and the BFD symbol table. We | |
9839 | must tell the rest of the code not to free up this | |
9840 | information. It would be possible to instead create a table | |
9841 | of changes which have to be made, as is done in coff-mips.c; | |
9842 | that would be more work, but would require less memory when | |
9843 | the linker is run. */ | |
35c08157 | 9844 | |
1c8f6a4d KLC |
9845 | if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size |
9846 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9847 | { | |
9848 | if (!(seq_len & 0x2)) | |
9849 | { | |
9850 | /* Don't convert it to 16-bit now, keep this as relaxable | |
9851 | for ``label reloc; INSN1a''6. */ | |
9852 | /* Save comp_insn32 to buffer. */ | |
9853 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9854 | *insn_len = 4; | |
9855 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9856 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9857 | cond_reloc = R_NDS32_INSN16; | |
9858 | } | |
9859 | else | |
9860 | { | |
9861 | /* Not optimize for speed; convert sequence to 16-bit. */ | |
9862 | /* Save comp_insn16 to buffer. */ | |
9863 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9864 | *insn_len = 2; | |
9865 | reloc = R_NDS32_9_PCREL_RELA; | |
9866 | cond_reloc = R_NDS32_NONE; | |
9867 | } | |
9868 | cond_removed = 1; | |
9869 | } | |
9870 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9871 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9872 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9873 | { | |
9874 | /* beqs label ; 15_PCREL */ | |
9875 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9876 | *insn_len = 4; | |
9877 | reloc = R_NDS32_15_PCREL_RELA; | |
9878 | cond_reloc = R_NDS32_NONE; | |
9879 | cond_removed = 1; | |
9880 | } | |
9881 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9882 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9883 | && foff < CONSERVATIVE_16BIT_S1) | |
9884 | { | |
9885 | /* beqz label ; 17_PCREL */ | |
9886 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9887 | *insn_len = 4; | |
9888 | reloc = R_NDS32_17_PCREL_RELA; | |
9889 | cond_reloc = R_NDS32_NONE; | |
9890 | cond_removed = 1; | |
9891 | } | |
9892 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
9893 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
9894 | { | |
9895 | /* Relax to one of the following 3 variations | |
9896 | ||
9897 | case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize | |
9898 | for space | |
9899 | bnes38 rt, $1 ; LONGJUMP2 | |
9900 | j label ; 25_PCREL | |
9901 | $1 | |
9902 | ||
9903 | case 4-4; 1st insn not convertible, others don't care | |
9904 | bne rt, ra, $1 ; LONGJUMP2 | |
9905 | j label ; 25_PCREL | |
9906 | $1 | |
9907 | ||
9908 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9909 | bne rt, ra, $1 ; LONGJUMP2 | |
9910 | j label ; 25_PCREL | |
9911 | $1 */ | |
9912 | ||
9913 | /* Offset for first instruction. */ | |
9914 | ||
9915 | /* Use j label as second instruction. */ | |
9916 | *insn_len = 4 + first_size; | |
9917 | insn = INSN_J; | |
9918 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
9919 | reloc = R_NDS32_LONGJUMP2; | |
9920 | cond_reloc = R_NDS32_25_PLTREL; | |
9921 | } | |
9922 | else | |
9923 | return FALSE; | |
35c08157 | 9924 | |
1c8f6a4d KLC |
9925 | if (cond_removed == 1) |
9926 | { | |
9927 | /* Set all relocations. */ | |
9928 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9929 | irel->r_addend = hi_irelfn->r_addend; | |
9930 | ||
9931 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), | |
9932 | cond_reloc); | |
9933 | cond_irelfn->r_addend = 0; | |
9934 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9935 | R_NDS32_NONE); | |
9936 | } | |
9937 | else | |
9938 | { | |
9939 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
9940 | irel->r_addend = irel->r_addend; | |
9941 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9942 | cond_reloc); | |
9943 | } | |
35c08157 | 9944 | |
1c8f6a4d KLC |
9945 | if ((seq_len ^ *insn_len ) & 0x2) |
9946 | { | |
9947 | insn16 = NDS32_NOP16; | |
9948 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9949 | lo_irelfn->r_offset = *insn_len; | |
9950 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9951 | R_NDS32_INSN16); | |
9952 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9953 | *insn_len += 2; | |
9954 | } | |
9955 | else | |
9956 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9957 | R_NDS32_NONE); | |
9958 | return TRUE; | |
9959 | } | |
35c08157 | 9960 | |
1c8f6a4d | 9961 | /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */ |
35c08157 | 9962 | |
1c8f6a4d KLC |
9963 | static bfd_boolean |
9964 | nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9965 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9966 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9967 | Elf_Internal_Shdr *symtab_hdr) | |
9968 | { | |
9969 | /* The pattern for LONGCALL4. Support for function cse. | |
9970 | sethi ta, hi20(symbol) ; LONGCALL4/HI20 | |
9971 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
9972 | jral ta ; PTR_RES/EMPTY/INSN16 */ | |
35c08157 | 9973 | |
1c8f6a4d KLC |
9974 | bfd_vma laddr; |
9975 | uint32_t insn; | |
9976 | Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel; | |
9977 | Elf_Internal_Rela *irelend; | |
9978 | int pic_ext_target = 0; | |
9979 | bfd_signed_vma foff; | |
35c08157 | 9980 | |
1c8f6a4d KLC |
9981 | irelend = internal_relocs + sec->reloc_count; |
9982 | laddr = irel->r_offset; | |
35c08157 | 9983 | |
1c8f6a4d KLC |
9984 | /* Get the reloc for the address from which the register is |
9985 | being loaded. This reloc will tell us which function is | |
9986 | actually being called. */ | |
9987 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9988 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 9989 | |
1c8f6a4d KLC |
9990 | if (hi_irel == irelend) |
9991 | { | |
9992 | (*_bfd_error_handler) | |
9993 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" | |
9994 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9995 | return FALSE; | |
9996 | } | |
35c08157 | 9997 | |
1c8f6a4d KLC |
9998 | /* Get the value of the symbol referred to by the reloc. */ |
9999 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
10000 | &pic_ext_target); | |
35c08157 | 10001 | |
1c8f6a4d KLC |
10002 | /* This condition only happened when symbol is undefined. */ |
10003 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
10004 | || foff >= CONSERVATIVE_24BIT_S1) | |
10005 | return FALSE; | |
35c08157 | 10006 | |
1c8f6a4d KLC |
10007 | /* Relax to: jal symbol; 25_PCREL */ |
10008 | /* For simplicity of coding, we are going to modify the section | |
10009 | contents, the section relocs, and the BFD symbol table. We | |
10010 | must tell the rest of the code not to free up this | |
10011 | information. It would be possible to instead create a table | |
10012 | of changes which have to be made, as is done in coff-mips.c; | |
10013 | that would be more work, but would require less memory when | |
10014 | the linker is run. */ | |
35c08157 | 10015 | |
1c8f6a4d KLC |
10016 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10017 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10018 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10019 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10020 | |
1c8f6a4d KLC |
10021 | if (ptr_irel == irelend || em_irel == irelend) |
10022 | { | |
10023 | (*_bfd_error_handler) | |
10024 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" | |
10025 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10026 | return FALSE; | |
10027 | } | |
10028 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ | |
10029 | insn = bfd_getb32 (contents + irel->r_addend); | |
10030 | if (insn & 0x80000000) | |
10031 | return FALSE; | |
35c08157 | 10032 | |
1c8f6a4d KLC |
10033 | /* Replace the long call with a jal. */ |
10034 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
10035 | R_NDS32_25_PCREL_RELA); | |
10036 | ptr_irel->r_addend = 1; | |
35c08157 | 10037 | |
1c8f6a4d KLC |
10038 | /* We don't resolve this here but resolve it in relocate_section. */ |
10039 | insn = INSN_JAL; | |
10040 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10041 | |
1c8f6a4d KLC |
10042 | irel->r_info = |
10043 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10044 | |
1c8f6a4d KLC |
10045 | /* If there is function cse, HI20 can not remove now. */ |
10046 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10047 | R_NDS32_LONGCALL4, laddr); | |
10048 | if (call_irel == irelend) | |
10049 | { | |
10050 | *insn_len = 0; | |
10051 | hi_irel->r_info = | |
10052 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
10053 | } | |
35c08157 | 10054 | |
1c8f6a4d KLC |
10055 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10056 | R_NDS32_INSN16, irel->r_addend); | |
10057 | if (insn_irel != irelend) | |
10058 | insn_irel->r_info = | |
10059 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10060 | |
1c8f6a4d KLC |
10061 | return TRUE; |
10062 | } | |
35c08157 | 10063 | |
1c8f6a4d | 10064 | /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */ |
35c08157 | 10065 | |
1c8f6a4d KLC |
10066 | static bfd_boolean |
10067 | nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10068 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10069 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10070 | Elf_Internal_Shdr *symtab_hdr) | |
10071 | { | |
10072 | /* The pattern for LONGCALL5. | |
10073 | bltz rt, .L1 ; LONGCALL5/17_PCREL | |
10074 | jal symbol ; 25_PCREL | |
10075 | .L1: */ | |
35c08157 | 10076 | |
1c8f6a4d KLC |
10077 | bfd_vma laddr; |
10078 | uint32_t insn; | |
10079 | Elf_Internal_Rela *cond_irel, *irelend; | |
10080 | int pic_ext_target = 0; | |
10081 | bfd_signed_vma foff; | |
35c08157 | 10082 | |
1c8f6a4d KLC |
10083 | irelend = internal_relocs + sec->reloc_count; |
10084 | laddr = irel->r_offset; | |
10085 | insn = bfd_getb32 (contents + laddr); | |
35c08157 | 10086 | |
1c8f6a4d KLC |
10087 | /* Get the reloc for the address from which the register is |
10088 | being loaded. This reloc will tell us which function is | |
10089 | actually being called. */ | |
10090 | cond_irel = | |
10091 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10092 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
10093 | if (cond_irel == irelend) | |
10094 | { | |
10095 | (*_bfd_error_handler) | |
10096 | ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized" | |
10097 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10098 | return FALSE; | |
10099 | } | |
35c08157 | 10100 | |
1c8f6a4d KLC |
10101 | /* Get the value of the symbol referred to by the reloc. */ |
10102 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10103 | &pic_ext_target); | |
35c08157 | 10104 | |
1c8f6a4d KLC |
10105 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
10106 | || foff >= CONSERVATIVE_16BIT_S1) | |
10107 | return FALSE; | |
35c08157 | 10108 | |
1c8f6a4d KLC |
10109 | /* Relax to bgezal rt, label ; 17_PCREL |
10110 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 10111 | |
1c8f6a4d KLC |
10112 | /* Convert to complimentary conditional call. */ |
10113 | insn = CONVERT_CONDITION_CALL (insn); | |
35c08157 | 10114 | |
1c8f6a4d KLC |
10115 | /* For simplicity of coding, we are going to modify the section |
10116 | contents, the section relocs, and the BFD symbol table. We | |
10117 | must tell the rest of the code not to free up this | |
10118 | information. It would be possible to instead create a table | |
10119 | of changes which have to be made, as is done in coff-mips.c; | |
10120 | that would be more work, but would require less memory when | |
10121 | the linker is run. */ | |
35c08157 | 10122 | |
1c8f6a4d KLC |
10123 | /* Modify relocation and contents. */ |
10124 | cond_irel->r_info = | |
10125 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA); | |
35c08157 | 10126 | |
1c8f6a4d KLC |
10127 | /* Replace the long call with a bgezal. */ |
10128 | bfd_putb32 (insn, contents + cond_irel->r_offset); | |
10129 | *insn_len = 0; | |
35c08157 | 10130 | |
1c8f6a4d KLC |
10131 | /* Clean unnessary relocations. */ |
10132 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10133 | |
1c8f6a4d KLC |
10134 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10135 | R_NDS32_17_PCREL_RELA, laddr); | |
10136 | cond_irel->r_info = | |
10137 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10138 | |
1c8f6a4d KLC |
10139 | return TRUE; |
10140 | } | |
35c08157 | 10141 | |
1c8f6a4d | 10142 | /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */ |
35c08157 | 10143 | |
1c8f6a4d KLC |
10144 | static bfd_boolean |
10145 | nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10146 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10147 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10148 | Elf_Internal_Shdr *symtab_hdr) | |
10149 | { | |
10150 | /* The pattern for LONGCALL6. | |
10151 | bltz rt, .L1 ; LONGCALL6/17_PCREL | |
10152 | sethi ta, hi20(symbol) ; HI20/PTR | |
10153 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10154 | jral ta ; PTR_RES/EMPTY/INSN16 | |
10155 | .L1 */ | |
10156 | ||
10157 | bfd_vma laddr; | |
10158 | uint32_t insn; | |
10159 | Elf_Internal_Rela *em_irel, *cond_irel, *irelend; | |
10160 | int pic_ext_target = 0; | |
10161 | bfd_signed_vma foff; | |
35c08157 | 10162 | |
1c8f6a4d KLC |
10163 | irelend = internal_relocs + sec->reloc_count; |
10164 | laddr = irel->r_offset; | |
35c08157 | 10165 | |
1c8f6a4d KLC |
10166 | /* Get the reloc for the address from which the register is |
10167 | being loaded. This reloc will tell us which function is | |
10168 | actually being called. */ | |
10169 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10170 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10171 | |
1c8f6a4d KLC |
10172 | if (em_irel == irelend) |
10173 | { | |
10174 | (*_bfd_error_handler) | |
10175 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10176 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10177 | return FALSE; | |
10178 | } | |
35c08157 | 10179 | |
1c8f6a4d KLC |
10180 | /* Get the value of the symbol referred to by the reloc. */ |
10181 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
10182 | &pic_ext_target); | |
35c08157 | 10183 | |
1c8f6a4d KLC |
10184 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
10185 | || foff >= CONSERVATIVE_24BIT_S1) | |
10186 | return FALSE; | |
35c08157 | 10187 | |
1c8f6a4d KLC |
10188 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ |
10189 | insn = bfd_getb32 (contents + irel->r_addend); | |
10190 | if (insn & 0x80000000) | |
10191 | return FALSE; | |
35c08157 | 10192 | |
1c8f6a4d KLC |
10193 | insn = bfd_getb32 (contents + laddr); |
10194 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10195 | { | |
10196 | /* Relax to bgezal rt, label ; 17_PCREL | |
10197 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 10198 | |
1c8f6a4d KLC |
10199 | /* Convert to complimentary conditional call. */ |
10200 | *insn_len = 0; | |
10201 | insn = CONVERT_CONDITION_CALL (insn); | |
10202 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
10203 | ||
10204 | em_irel->r_info = | |
10205 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA); | |
10206 | ||
10207 | /* Set resolved relocation. */ | |
10208 | cond_irel = | |
10209 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10210 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10211 | if (cond_irel == irelend) | |
35c08157 | 10212 | { |
1c8f6a4d KLC |
10213 | (*_bfd_error_handler) |
10214 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10215 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10216 | return FALSE; | |
10217 | } | |
10218 | cond_irel->r_addend = 1; | |
35c08157 | 10219 | |
1c8f6a4d | 10220 | /* Clear relocations. */ |
35c08157 | 10221 | |
1c8f6a4d KLC |
10222 | irel->r_info = |
10223 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10224 | |
1c8f6a4d KLC |
10225 | cond_irel = |
10226 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10227 | R_NDS32_17_PCREL_RELA, laddr); | |
10228 | if (cond_irel != irelend) | |
10229 | cond_irel->r_info = | |
10230 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10231 | |
1c8f6a4d KLC |
10232 | cond_irel = |
10233 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10234 | R_NDS32_INSN16, irel->r_addend); | |
10235 | if (cond_irel != irelend) | |
10236 | cond_irel->r_info = | |
10237 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10238 | |
1c8f6a4d KLC |
10239 | } |
10240 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
10241 | { | |
10242 | /* Relax to the following instruction sequence | |
10243 | bltz rt, .L1 ; LONGCALL2/17_PCREL | |
10244 | jal symbol ; 25_PCREL/PTR_RES | |
10245 | .L1 */ | |
10246 | *insn_len = 4; | |
10247 | /* Convert instruction. */ | |
10248 | insn = INSN_JAL; | |
10249 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10250 | |
1c8f6a4d KLC |
10251 | /* Convert relocations. */ |
10252 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
10253 | R_NDS32_25_PCREL_RELA); | |
10254 | irel->r_info = | |
10255 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5); | |
35c08157 | 10256 | |
1c8f6a4d KLC |
10257 | /* Set resolved relocation. */ |
10258 | cond_irel = | |
10259 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10260 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10261 | if (cond_irel == irelend) | |
10262 | { | |
10263 | (*_bfd_error_handler) | |
10264 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10265 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10266 | return FALSE; | |
10267 | } | |
10268 | cond_irel->r_addend = 1; | |
35c08157 | 10269 | |
1c8f6a4d KLC |
10270 | cond_irel = |
10271 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10272 | R_NDS32_INSN16, irel->r_addend); | |
10273 | if (cond_irel != irelend) | |
10274 | cond_irel->r_info = | |
10275 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
10276 | } | |
10277 | return TRUE; | |
10278 | } | |
35c08157 | 10279 | |
1c8f6a4d | 10280 | /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */ |
35c08157 | 10281 | |
1c8f6a4d KLC |
10282 | static bfd_boolean |
10283 | nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10284 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10285 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10286 | Elf_Internal_Shdr *symtab_hdr) | |
10287 | { | |
10288 | /* The pattern for LONGJUMP4. | |
10289 | sethi ta, hi20(symbol) ; LONGJUMP4/HI20 | |
10290 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10291 | jr ta ; PTR_RES/INSN16/EMPTY */ | |
10292 | ||
10293 | bfd_vma laddr; | |
10294 | int seq_len; /* Original length of instruction sequence. */ | |
10295 | uint32_t insn; | |
10296 | Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend; | |
10297 | int pic_ext_target = 0; | |
10298 | bfd_signed_vma foff; | |
35c08157 | 10299 | |
1c8f6a4d KLC |
10300 | irelend = internal_relocs + sec->reloc_count; |
10301 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10302 | laddr = irel->r_offset; | |
10303 | *insn_len = seq_len; | |
35c08157 | 10304 | |
1c8f6a4d KLC |
10305 | /* Get the reloc for the address from which the register is |
10306 | being loaded. This reloc will tell us which function is | |
10307 | actually being called. */ | |
35c08157 | 10308 | |
1c8f6a4d KLC |
10309 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10310 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 10311 | |
1c8f6a4d KLC |
10312 | if (hi_irel == irelend) |
10313 | { | |
10314 | (*_bfd_error_handler) | |
10315 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" | |
10316 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10317 | return FALSE; | |
10318 | } | |
35c08157 | 10319 | |
1c8f6a4d KLC |
10320 | /* Get the value of the symbol referred to by the reloc. */ |
10321 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
10322 | &pic_ext_target); | |
35c08157 | 10323 | |
1c8f6a4d KLC |
10324 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
10325 | || foff < -CONSERVATIVE_24BIT_S1) | |
10326 | return FALSE; | |
35c08157 | 10327 | |
1c8f6a4d KLC |
10328 | /* Convert it to "j label", it may be converted to j8 in the final |
10329 | pass of relaxation. Therefore, we do not consider this currently. */ | |
10330 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10331 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10332 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10333 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10334 | |
1c8f6a4d KLC |
10335 | if (ptr_irel == irelend || em_irel == irelend) |
10336 | { | |
10337 | (*_bfd_error_handler) | |
10338 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" | |
10339 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10340 | return FALSE; | |
10341 | } | |
35c08157 | 10342 | |
1c8f6a4d KLC |
10343 | em_irel->r_info = |
10344 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA); | |
10345 | ptr_irel->r_addend = 1; | |
35c08157 | 10346 | |
1c8f6a4d KLC |
10347 | /* Write instruction. */ |
10348 | insn = INSN_J; | |
10349 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10350 | |
1c8f6a4d KLC |
10351 | /* Clear relocations. */ |
10352 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10353 | |
1c8f6a4d KLC |
10354 | /* If there is function cse, HI20 can not remove now. */ |
10355 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10356 | R_NDS32_LONGJUMP4, laddr); | |
10357 | if (call_irel == irelend) | |
10358 | { | |
10359 | *insn_len = 0; | |
10360 | hi_irel->r_info = | |
10361 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
10362 | } | |
35c08157 | 10363 | |
1c8f6a4d KLC |
10364 | return TRUE; |
10365 | } | |
35c08157 | 10366 | |
1c8f6a4d | 10367 | /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */ |
35c08157 | 10368 | |
1c8f6a4d KLC |
10369 | static bfd_boolean |
10370 | nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10371 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10372 | int *seq_len, bfd_byte *contents, | |
10373 | Elf_Internal_Sym *isymbuf, | |
10374 | Elf_Internal_Shdr *symtab_hdr) | |
10375 | { | |
10376 | /* There are 2 variations for LONGJUMP5 | |
10377 | case 2-4; 1st insn convertible, 16-bit on. | |
10378 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10379 | j label ; 25_PCREL/INSN16 | |
10380 | $1: | |
10381 | ||
10382 | case 4-4; 1st insn not convertible | |
10383 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10384 | j label ; 25_PCREL/INSN16 | |
10385 | .L1: */ | |
10386 | ||
10387 | bfd_vma laddr; | |
10388 | Elf_Internal_Rela *cond_irel, *irelend; | |
10389 | int pic_ext_target = 0; | |
10390 | unsigned int i; | |
10391 | bfd_signed_vma foff; | |
10392 | uint32_t insn, re_insn = 0; | |
10393 | uint16_t insn16, re_insn16 = 0; | |
10394 | unsigned long reloc; | |
35c08157 | 10395 | |
1c8f6a4d KLC |
10396 | enum elf_nds32_reloc_type checked_types[] = |
10397 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10398 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
35c08157 | 10399 | |
1c8f6a4d KLC |
10400 | irelend = internal_relocs + sec->reloc_count; |
10401 | laddr = irel->r_offset; | |
35c08157 | 10402 | |
1c8f6a4d KLC |
10403 | /* Get the reloc for the address from which the register is |
10404 | being loaded. This reloc will tell us which function is | |
10405 | actually being called. */ | |
35c08157 | 10406 | |
1c8f6a4d KLC |
10407 | cond_irel = |
10408 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10409 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
10410 | if (cond_irel == irelend) | |
10411 | { | |
10412 | (*_bfd_error_handler) | |
10413 | ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized" | |
10414 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10415 | return FALSE; | |
10416 | } | |
35c08157 | 10417 | |
1c8f6a4d KLC |
10418 | /* Get the value of the symbol referred to by the reloc. */ |
10419 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10420 | &pic_ext_target); | |
35c08157 | 10421 | |
1c8f6a4d KLC |
10422 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
10423 | || foff >= CONSERVATIVE_16BIT_S1) | |
10424 | return FALSE; | |
35c08157 | 10425 | |
1c8f6a4d KLC |
10426 | /* Get the all corresponding instructions. */ |
10427 | insn = bfd_getb32 (contents + laddr); | |
10428 | /* Check instruction size. */ | |
10429 | if (insn & 0x80000000) | |
10430 | { | |
10431 | *seq_len = 0; | |
10432 | insn16 = insn >> 16; | |
10433 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10434 | } | |
10435 | else | |
10436 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10437 | |
1c8f6a4d KLC |
10438 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10439 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10440 | { | |
10441 | /* beqs label ; 15_PCREL. */ | |
10442 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10443 | reloc = R_NDS32_15_PCREL_RELA; | |
10444 | } | |
10445 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10446 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10447 | { | |
10448 | /* beqz label ; 17_PCREL. */ | |
10449 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10450 | reloc = R_NDS32_17_PCREL_RELA; | |
10451 | } | |
10452 | else if ( N32_OP6 (re_insn) == N32_OP6_BR3 | |
10453 | && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1) | |
10454 | { | |
10455 | /* beqc label ; 9_PCREL. */ | |
10456 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10457 | reloc = R_NDS32_WORD_9_PCREL_RELA; | |
10458 | } | |
10459 | else | |
10460 | return FALSE; | |
35c08157 | 10461 | |
1c8f6a4d KLC |
10462 | /* Set all relocations. */ |
10463 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc); | |
35c08157 | 10464 | |
1c8f6a4d KLC |
10465 | /* Clean relocations. */ |
10466 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10467 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
10468 | { | |
10469 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10470 | checked_types[i], laddr); | |
10471 | if (cond_irel != irelend) | |
10472 | { | |
10473 | if (*seq_len == 0 | |
10474 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
35c08157 | 10475 | { |
1c8f6a4d KLC |
10476 | /* If the branch instruction is 2 byte, it cannot remove |
10477 | directly. Only convert it to nop16 and remove it after | |
10478 | checking alignment issue. */ | |
10479 | insn16 = NDS32_NOP16; | |
10480 | bfd_putb16 (insn16, contents + laddr); | |
10481 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 KLC |
10482 | } |
10483 | else | |
1c8f6a4d KLC |
10484 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
10485 | R_NDS32_NONE); | |
35c08157 | 10486 | } |
1c8f6a4d KLC |
10487 | } |
10488 | *insn_len = 0; | |
35c08157 | 10489 | |
1c8f6a4d KLC |
10490 | return TRUE; |
10491 | } | |
35c08157 | 10492 | |
1c8f6a4d | 10493 | /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */ |
35c08157 | 10494 | |
1c8f6a4d KLC |
10495 | static bfd_boolean |
10496 | nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10497 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10498 | int *seq_len, bfd_byte *contents, | |
10499 | Elf_Internal_Sym *isymbuf, | |
10500 | Elf_Internal_Shdr *symtab_hdr) | |
10501 | { | |
10502 | /* There are 5 variations for LONGJUMP6 | |
10503 | case : 2-4-4-4; 1st insn convertible, 16-bit on. | |
10504 | bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10505 | sethi ta, hi20(symbol) ; HI20/PTR | |
10506 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10507 | jr ta ; PTR_RES/INSN16/EMPTY | |
10508 | .L1: | |
10509 | ||
10510 | case : 4-4-4-4; 1st insn not convertible, 16-bit on. | |
10511 | bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10512 | sethi ta, hi20(symbol) ; HI20/PTR | |
10513 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10514 | jr ta ; PTR_RES/INSN16/EMPTY | |
10515 | .L1: */ | |
10516 | ||
10517 | enum elf_nds32_reloc_type checked_types[] = | |
10518 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10519 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
10520 | ||
10521 | int reloc_off = 0, cond_removed = 0; | |
10522 | bfd_vma laddr; | |
10523 | Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel; | |
10524 | int pic_ext_target = 0; | |
10525 | unsigned int i; | |
10526 | bfd_signed_vma foff; | |
10527 | uint32_t insn, re_insn = 0; | |
10528 | uint16_t insn16, re_insn16 = 0; | |
10529 | unsigned long reloc; | |
35c08157 | 10530 | |
1c8f6a4d KLC |
10531 | irelend = internal_relocs + sec->reloc_count; |
10532 | laddr = irel->r_offset; | |
35c08157 | 10533 | |
1c8f6a4d KLC |
10534 | /* Get the reloc for the address from which the register is |
10535 | being loaded. This reloc will tell us which function is | |
10536 | actually being called. */ | |
10537 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10538 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10539 | |
1c8f6a4d KLC |
10540 | if (em_irel == irelend) |
10541 | { | |
10542 | (*_bfd_error_handler) | |
10543 | ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized" | |
10544 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10545 | return FALSE; | |
10546 | } | |
35c08157 | 10547 | |
1c8f6a4d KLC |
10548 | /* Get the value of the symbol referred to by the reloc. */ |
10549 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
10550 | &pic_ext_target); | |
35c08157 | 10551 | |
1c8f6a4d KLC |
10552 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
10553 | || foff >= CONSERVATIVE_24BIT_S1) | |
10554 | return FALSE; | |
35c08157 | 10555 | |
1c8f6a4d KLC |
10556 | insn = bfd_getb32 (contents + laddr); |
10557 | /* Check instruction size. */ | |
10558 | if (insn & 0x80000000) | |
10559 | { | |
10560 | *seq_len = 0; | |
10561 | insn16 = insn >> 16; | |
10562 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10563 | } | |
10564 | else | |
10565 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10566 | |
1c8f6a4d KLC |
10567 | /* For simplicity of coding, we are going to modify the section |
10568 | contents, the section relocs, and the BFD symbol table. We | |
10569 | must tell the rest of the code not to free up this | |
10570 | information. It would be possible to instead create a table | |
10571 | of changes which have to be made, as is done in coff-mips.c; | |
10572 | that would be more work, but would require less memory when | |
10573 | the linker is run. */ | |
35c08157 | 10574 | |
1c8f6a4d KLC |
10575 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10576 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10577 | { | |
10578 | /* beqs label ; 15_PCREL */ | |
10579 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10580 | reloc = R_NDS32_15_PCREL_RELA; | |
10581 | cond_removed = 1; | |
10582 | } | |
10583 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10584 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10585 | { | |
10586 | /* beqz label ; 17_PCREL */ | |
10587 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10588 | reloc = R_NDS32_17_PCREL_RELA; | |
10589 | cond_removed = 1; | |
10590 | } | |
10591 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
10592 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
10593 | { | |
10594 | /* Relax to one of the following 2 variations | |
35c08157 | 10595 | |
1c8f6a4d KLC |
10596 | case 2-4; 1st insn convertible, 16-bit on. |
10597 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10598 | j label ; 25_PCREL/INSN16 | |
10599 | $1: | |
35c08157 | 10600 | |
1c8f6a4d KLC |
10601 | case 4-4; 1st insn not convertible |
10602 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10603 | j label ; 25_PCREL/INSN16 | |
10604 | .L1: */ | |
35c08157 | 10605 | |
1c8f6a4d KLC |
10606 | /* Use j label as second instruction. */ |
10607 | insn = INSN_J; | |
10608 | reloc = R_NDS32_25_PCREL_RELA; | |
10609 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
10610 | } | |
10611 | else | |
10612 | return FALSE; | |
35c08157 | 10613 | |
1c8f6a4d KLC |
10614 | /* Set all relocations. */ |
10615 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc); | |
35c08157 | 10616 | |
1c8f6a4d KLC |
10617 | cond_irel = |
10618 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10619 | R_NDS32_PTR_RESOLVED, em_irel->r_offset); | |
10620 | cond_irel->r_addend = 1; | |
35c08157 | 10621 | |
1c8f6a4d KLC |
10622 | /* Use INSN16 of first branch instruction to distinguish if keeping |
10623 | INSN16 of final instruction or not. */ | |
10624 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10625 | R_NDS32_INSN16, irel->r_offset); | |
10626 | if (insn_irel == irelend) | |
10627 | { | |
10628 | /* Clean the final INSN16. */ | |
10629 | insn_irel = | |
10630 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10631 | R_NDS32_INSN16, em_irel->r_offset); | |
10632 | insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10633 | R_NDS32_NONE); | |
10634 | } | |
10635 | ||
10636 | if (cond_removed == 1) | |
10637 | { | |
10638 | *insn_len = 0; | |
10639 | ||
10640 | /* Clear relocations. */ | |
10641 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10642 | |
1c8f6a4d KLC |
10643 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
10644 | { | |
10645 | cond_irel = | |
10646 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10647 | checked_types[i], laddr); | |
10648 | if (cond_irel != irelend) | |
35c08157 | 10649 | { |
1c8f6a4d KLC |
10650 | if (*seq_len == 0 |
10651 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
10652 | { | |
10653 | /* If the branch instruction is 2 byte, it cannot remove | |
10654 | directly. Only convert it to nop16 and remove it after | |
10655 | checking alignment issue. */ | |
10656 | insn16 = NDS32_NOP16; | |
10657 | bfd_putb16 (insn16, contents + laddr); | |
10658 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
10659 | } | |
10660 | else | |
10661 | cond_irel->r_info = | |
10662 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10663 | } |
35c08157 | 10664 | } |
1c8f6a4d KLC |
10665 | } |
10666 | else | |
10667 | { | |
10668 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
10669 | R_NDS32_LONGJUMP5); | |
10670 | } | |
35c08157 | 10671 | |
1c8f6a4d KLC |
10672 | return TRUE; |
10673 | } | |
35c08157 | 10674 | |
1c8f6a4d | 10675 | /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */ |
35c08157 | 10676 | |
1c8f6a4d KLC |
10677 | static bfd_boolean |
10678 | nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10679 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10680 | int *seq_len, bfd_byte *contents, | |
10681 | Elf_Internal_Sym *isymbuf, | |
10682 | Elf_Internal_Shdr *symtab_hdr) | |
10683 | { | |
10684 | /* There are 2 variations for LONGJUMP5 | |
10685 | case 2-4; 1st insn convertible, 16-bit on. | |
10686 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10687 | beq rt, ta, label ; 15_PCREL | |
10688 | ||
10689 | case 4-4; 1st insn not convertible | |
10690 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10691 | beq rt, ta, label ; 15_PCREL */ | |
10692 | ||
10693 | bfd_vma laddr; | |
10694 | Elf_Internal_Rela *cond_irel, *irelend, *insn_irel; | |
10695 | int pic_ext_target = 0; | |
10696 | bfd_signed_vma foff; | |
10697 | uint32_t insn, re_insn = 0; | |
10698 | uint16_t insn16; | |
10699 | uint32_t imm11; | |
35c08157 | 10700 | |
1c8f6a4d KLC |
10701 | irelend = internal_relocs + sec->reloc_count; |
10702 | laddr = irel->r_offset; | |
35c08157 | 10703 | |
1c8f6a4d KLC |
10704 | /* Get the reloc for the address from which the register is |
10705 | being loaded. This reloc will tell us which function is | |
10706 | actually being called. */ | |
35c08157 | 10707 | |
1c8f6a4d KLC |
10708 | cond_irel = |
10709 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10710 | R_NDS32_15_PCREL_RELA, irel->r_addend); | |
10711 | if (cond_irel == irelend) | |
10712 | { | |
10713 | (*_bfd_error_handler) | |
10714 | ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized" | |
10715 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10716 | return FALSE; | |
10717 | } | |
35c08157 | 10718 | |
1c8f6a4d KLC |
10719 | /* Get the value of the symbol referred to by the reloc. */ |
10720 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10721 | &pic_ext_target); | |
35c08157 | 10722 | |
1c8f6a4d KLC |
10723 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1 |
10724 | || foff >= CONSERVATIVE_8BIT_S1) | |
10725 | return FALSE; | |
35c08157 | 10726 | |
1c8f6a4d KLC |
10727 | /* Get the first instruction for its size. */ |
10728 | insn = bfd_getb32 (contents + laddr); | |
10729 | if (insn & 0x80000000) | |
10730 | { | |
10731 | *seq_len = 0; | |
10732 | /* Get the immediate from movi55. */ | |
10733 | imm11 = N16_IMM5S (insn >> 16); | |
10734 | } | |
10735 | else | |
10736 | { | |
10737 | /* Get the immediate from movi. */ | |
10738 | imm11 = N32_IMM20S (insn); | |
35c08157 KLC |
10739 | } |
10740 | ||
1c8f6a4d KLC |
10741 | /* Get the branch instruction. */ |
10742 | insn = bfd_getb32 (contents + irel->r_addend); | |
10743 | /* Convert instruction to BR3. */ | |
10744 | if ((insn >> 14) & 0x1) | |
10745 | re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0); | |
10746 | else | |
10747 | re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0); | |
35c08157 | 10748 | |
1c8f6a4d | 10749 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
35c08157 | 10750 | |
1c8f6a4d KLC |
10751 | /* Set all relocations. */ |
10752 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10753 | R_NDS32_WORD_9_PCREL_RELA); | |
10754 | ||
10755 | /* Clean relocations. */ | |
10756 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10757 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10758 | R_NDS32_INSN16, irel->r_offset); | |
10759 | if (insn_irel != irelend) | |
10760 | { | |
10761 | if (*seq_len == 0) | |
35c08157 | 10762 | { |
1c8f6a4d KLC |
10763 | /* If the first insntruction is 16bit, convert it to nop16. */ |
10764 | insn16 = NDS32_NOP16; | |
10765 | bfd_putb16 (insn16, contents + laddr); | |
10766 | insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 | 10767 | } |
1c8f6a4d KLC |
10768 | else |
10769 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10770 | R_NDS32_NONE); | |
35c08157 | 10771 | } |
1c8f6a4d | 10772 | *insn_len = 0; |
35c08157 | 10773 | |
1c8f6a4d KLC |
10774 | return TRUE; |
10775 | } | |
35c08157 | 10776 | |
1c8f6a4d | 10777 | #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f) |
35c08157 | 10778 | |
1c8f6a4d | 10779 | /* Relax LOADSTORE relocation for nds32_elf_relax_section. */ |
35c08157 | 10780 | |
1c8f6a4d KLC |
10781 | static bfd_boolean |
10782 | nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd, | |
10783 | asection *sec, Elf_Internal_Rela *irel, | |
10784 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10785 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10786 | Elf_Internal_Shdr *symtab_hdr, int load_store_relax) | |
10787 | { | |
6cae483a AM |
10788 | int eliminate_sethi = 0, range_type; |
10789 | unsigned int i; | |
1c8f6a4d KLC |
10790 | bfd_vma local_sda, laddr; |
10791 | int seq_len; /* Original length of instruction sequence. */ | |
10792 | uint32_t insn; | |
10793 | Elf_Internal_Rela *hi_irelfn = NULL, *irelend; | |
10794 | bfd_vma access_addr = 0; | |
10795 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10796 | enum elf_nds32_reloc_type checked_types[] = | |
10797 | { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20, | |
10798 | R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20, | |
10799 | R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20, | |
10800 | R_NDS32_TLS_LE_HI20 | |
10801 | }; | |
35c08157 | 10802 | |
1c8f6a4d KLC |
10803 | irelend = internal_relocs + sec->reloc_count; |
10804 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10805 | laddr = irel->r_offset; | |
10806 | *insn_len = seq_len; | |
35c08157 | 10807 | |
1c8f6a4d | 10808 | /* Get the high part relocation. */ |
6cae483a | 10809 | for (i = 0; i < ARRAY_SIZE (checked_types); i++) |
1c8f6a4d KLC |
10810 | { |
10811 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10812 | checked_types[i], laddr); | |
10813 | if (hi_irelfn != irelend) | |
10814 | break; | |
10815 | } | |
35c08157 | 10816 | |
1c8f6a4d KLC |
10817 | if (hi_irelfn == irelend) |
10818 | { | |
10819 | (*_bfd_error_handler) | |
10820 | ("%B: warning: R_NDS32_LOADSTORE points to unrecognized" | |
10821 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10822 | return FALSE; | |
10823 | } | |
35c08157 | 10824 | |
1c8f6a4d KLC |
10825 | range_type = GET_LOADSTORE_RANGE (irel->r_addend); |
10826 | nds32_elf_final_sda_base (sec->output_section->owner, | |
10827 | link_info, &local_sda, FALSE); | |
35c08157 | 10828 | |
1c8f6a4d KLC |
10829 | switch (ELF32_R_TYPE (hi_irelfn->r_info)) |
10830 | { | |
10831 | case R_NDS32_HI20_RELA: | |
10832 | insn = bfd_getb32 (contents + laddr); | |
10833 | access_addr = | |
10834 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10835 | ||
10836 | if (range_type == NDS32_LOADSTORE_IMM) | |
10837 | { | |
10838 | struct elf_link_hash_entry *h = NULL; | |
10839 | int indx; | |
35c08157 | 10840 | |
1c8f6a4d | 10841 | if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info) |
35c08157 | 10842 | { |
1c8f6a4d KLC |
10843 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
10844 | h = elf_sym_hashes (abfd)[indx]; | |
35c08157 | 10845 | } |
35c08157 | 10846 | |
1c8f6a4d KLC |
10847 | if ((access_addr < CONSERVATIVE_20BIT) |
10848 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
35c08157 | 10849 | { |
1c8f6a4d KLC |
10850 | eliminate_sethi = 1; |
10851 | break; | |
35c08157 | 10852 | } |
1c8f6a4d KLC |
10853 | |
10854 | /* This is avoid to relax symbol address which is fixed | |
10855 | relocations. Ex: _stack. */ | |
10856 | if (h && bfd_is_abs_section (h->root.u.def.section)) | |
10857 | return FALSE; | |
10858 | } | |
10859 | ||
10860 | if (!load_store_relax) | |
10861 | return FALSE; | |
10862 | ||
10863 | /* Case for set gp register. */ | |
10864 | if (N32_RT5 (insn) == REG_GP) | |
10865 | break; | |
10866 | ||
10867 | if (range_type == NDS32_LOADSTORE_FLOAT_S | |
10868 | || range_type == NDS32_LOADSTORE_FLOAT_S) | |
10869 | { | |
10870 | range_l = sdata_range[0][0]; | |
10871 | range_h = sdata_range[0][1]; | |
10872 | } | |
10873 | else | |
10874 | { | |
10875 | range_l = sdata_range[1][0]; | |
10876 | range_h = sdata_range[1][1]; | |
10877 | } | |
10878 | break; | |
10879 | ||
10880 | case R_NDS32_GOT_HI20: | |
10881 | access_addr = | |
10882 | calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr); | |
10883 | ||
10884 | /* If this symbol is not in .got, the return value will be -1. | |
10885 | Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE, | |
10886 | a negative offset is allowed. */ | |
10887 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10888 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10889 | eliminate_sethi = 1; | |
10890 | break; | |
10891 | ||
10892 | case R_NDS32_PLT_GOTREL_HI20: | |
10893 | access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf, | |
10894 | hi_irelfn, symtab_hdr); | |
10895 | ||
10896 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10897 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10898 | eliminate_sethi = 1; | |
10899 | break; | |
10900 | ||
10901 | case R_NDS32_GOTOFF_HI20: | |
10902 | access_addr = | |
10903 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10904 | ||
10905 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10906 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10907 | eliminate_sethi = 1; | |
10908 | break; | |
10909 | ||
10910 | case R_NDS32_GOTPC_HI20: | |
10911 | /* The access_addr must consider r_addend of hi_irel. */ | |
10912 | access_addr = sec->output_section->vma + sec->output_offset | |
10913 | + irel->r_offset + hi_irelfn->r_addend; | |
10914 | ||
10915 | if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT | |
10916 | && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT) | |
10917 | eliminate_sethi = 1; | |
10918 | break; | |
10919 | ||
10920 | case R_NDS32_TLS_LE_HI20: | |
10921 | access_addr = | |
10922 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10923 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10924 | access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10925 | if ((range_type == NDS32_LOADSTORE_IMM) | |
10926 | && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT | |
10927 | && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT) | |
10928 | eliminate_sethi = 1; | |
10929 | break; | |
10930 | ||
10931 | default: | |
10932 | return FALSE; | |
10933 | } | |
10934 | ||
10935 | /* Delete sethi instruction. */ | |
10936 | if (eliminate_sethi == 1 | |
10937 | || (local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
10938 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
10939 | { | |
10940 | hi_irelfn->r_info = | |
10941 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
10942 | irel->r_info = | |
10943 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10944 | *insn_len = 0; | |
10945 | } | |
10946 | return TRUE; | |
10947 | } | |
10948 | ||
10949 | /* Relax LO12 relocation for nds32_elf_relax_section. */ | |
10950 | ||
10951 | static void | |
10952 | nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd, | |
10953 | asection *sec, Elf_Internal_Rela *irel, | |
10954 | Elf_Internal_Rela *internal_relocs, bfd_byte *contents, | |
10955 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr) | |
10956 | { | |
10957 | uint32_t insn; | |
10958 | bfd_vma local_sda, laddr; | |
10959 | unsigned long reloc; | |
10960 | bfd_vma access_addr; | |
10961 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10962 | Elf_Internal_Rela *irelfn = NULL, *irelend; | |
10963 | struct elf_link_hash_entry *h = NULL; | |
10964 | int indx; | |
10965 | ||
10966 | /* For SDA base relative relaxation. */ | |
10967 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
10968 | &local_sda, FALSE); | |
10969 | ||
10970 | irelend = internal_relocs + sec->reloc_count; | |
10971 | laddr = irel->r_offset; | |
10972 | insn = bfd_getb32 (contents + laddr); | |
10973 | ||
10974 | if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI) | |
10975 | return; | |
10976 | ||
10977 | access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10978 | ||
10979 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) | |
10980 | { | |
10981 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
10982 | h = elf_sym_hashes (abfd)[indx]; | |
10983 | } | |
10984 | ||
10985 | if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT | |
10986 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
10987 | { | |
10988 | reloc = R_NDS32_20_RELA; | |
10989 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10990 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
10991 | bfd_putb32 (insn, contents + laddr); | |
10992 | } | |
10993 | /* This is avoid to relax symbol address which is fixed | |
10994 | relocations. Ex: _stack. */ | |
10995 | else if (N32_OP6 (insn) == N32_OP6_ORI | |
10996 | && h && bfd_is_abs_section (h->root.u.def.section)) | |
10997 | return; | |
10998 | else | |
10999 | { | |
11000 | range_l = sdata_range[1][0]; | |
11001 | range_h = sdata_range[1][1]; | |
11002 | switch (ELF32_R_TYPE (irel->r_info)) | |
11003 | { | |
11004 | case R_NDS32_LO12S0_RELA: | |
11005 | reloc = R_NDS32_SDA19S0_RELA; | |
11006 | break; | |
11007 | case R_NDS32_LO12S1_RELA: | |
11008 | reloc = R_NDS32_SDA18S1_RELA; | |
11009 | break; | |
11010 | case R_NDS32_LO12S2_RELA: | |
11011 | reloc = R_NDS32_SDA17S2_RELA; | |
11012 | break; | |
11013 | case R_NDS32_LO12S2_DP_RELA: | |
11014 | range_l = sdata_range[0][0]; | |
11015 | range_h = sdata_range[0][1]; | |
11016 | reloc = R_NDS32_SDA12S2_DP_RELA; | |
11017 | break; | |
11018 | case R_NDS32_LO12S2_SP_RELA: | |
11019 | range_l = sdata_range[0][0]; | |
11020 | range_h = sdata_range[0][1]; | |
11021 | reloc = R_NDS32_SDA12S2_SP_RELA; | |
11022 | break; | |
11023 | default: | |
11024 | return; | |
11025 | } | |
11026 | ||
11027 | /* There are range_h and range_l because linker has to promise | |
11028 | all sections move cross one page together. */ | |
11029 | if ((local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
11030 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
11031 | { | |
11032 | if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP) | |
35c08157 | 11033 | { |
1c8f6a4d KLC |
11034 | /* Maybe we should add R_NDS32_INSN16 reloc type here |
11035 | or manually do some optimization. sethi can't be | |
11036 | eliminated when updating $gp so the relative ori | |
11037 | needs to be preserved. */ | |
11038 | return; | |
35c08157 | 11039 | } |
1c8f6a4d KLC |
11040 | if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info), |
11041 | &insn)) | |
11042 | return; | |
11043 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11044 | bfd_putb32 (insn, contents + laddr); | |
11045 | ||
11046 | irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11047 | R_NDS32_INSN16); | |
11048 | /* SDA17 must keep INSN16 for converting fp_as_gp. */ | |
11049 | if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA) | |
11050 | irelfn->r_info = | |
11051 | ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE); | |
11052 | ||
35c08157 | 11053 | } |
1c8f6a4d KLC |
11054 | } |
11055 | return; | |
11056 | } | |
35c08157 | 11057 | |
1c8f6a4d KLC |
11058 | /* Relax low part of PIC instruction pattern. */ |
11059 | ||
11060 | static void | |
11061 | nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd, | |
11062 | asection *sec, Elf_Internal_Rela *irel, | |
11063 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11064 | Elf_Internal_Shdr *symtab_hdr) | |
11065 | { | |
11066 | uint32_t insn; | |
11067 | bfd_vma local_sda, laddr; | |
11068 | bfd_signed_vma foff; | |
11069 | unsigned long reloc; | |
11070 | ||
11071 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11072 | &local_sda, FALSE); | |
11073 | laddr = irel->r_offset; | |
11074 | insn = bfd_getb32 (contents + laddr); | |
11075 | ||
11076 | if (N32_OP6 (insn) != N32_OP6_ORI) | |
11077 | return; | |
11078 | ||
11079 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12) | |
11080 | { | |
11081 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
11082 | symtab_hdr) - local_sda; | |
11083 | reloc = R_NDS32_GOT20; | |
11084 | } | |
11085 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12) | |
11086 | { | |
11087 | foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
11088 | symtab_hdr) - local_sda; | |
11089 | reloc = R_NDS32_PLT_GOTREL_LO20; | |
11090 | } | |
11091 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12) | |
11092 | { | |
11093 | foff = calculate_memory_address (abfd, irel, isymbuf, | |
11094 | symtab_hdr) - local_sda; | |
11095 | reloc = R_NDS32_GOTOFF; | |
11096 | } | |
11097 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12) | |
11098 | { | |
11099 | foff = local_sda - sec->output_section->vma + sec->output_offset | |
11100 | + irel->r_offset + irel->r_addend; | |
11101 | reloc = R_NDS32_GOTPC20; | |
11102 | } | |
11103 | else | |
11104 | return; | |
11105 | ||
11106 | if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT)) | |
11107 | { | |
11108 | /* Turn into MOVI. */ | |
11109 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11110 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
11111 | bfd_putb32 (insn, contents + laddr); | |
11112 | } | |
11113 | } | |
11114 | ||
11115 | /* Relax low part of LE TLS instruction pattern. */ | |
11116 | ||
11117 | static void | |
11118 | nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd, | |
11119 | Elf_Internal_Rela *irel, | |
11120 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11121 | Elf_Internal_Shdr *symtab_hdr) | |
11122 | { | |
11123 | uint32_t insn; | |
11124 | bfd_vma laddr; | |
11125 | bfd_signed_vma foff; | |
11126 | unsigned long reloc; | |
11127 | ||
11128 | laddr = irel->r_offset; | |
11129 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11130 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11131 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11132 | insn = bfd_getb32 (contents + laddr); | |
11133 | ||
11134 | if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT | |
11135 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT) | |
11136 | { | |
11137 | /* Pattern sethi-ori transform to movi. */ | |
11138 | reloc = R_NDS32_TLS_LE_20; | |
11139 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11140 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
11141 | bfd_putb32 (insn, contents + laddr); | |
11142 | } | |
11143 | } | |
11144 | ||
11145 | /* Relax LE TLS calculate address instruction pattern. */ | |
11146 | ||
11147 | static void | |
11148 | nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd, | |
11149 | asection *sec, Elf_Internal_Rela *irel, | |
11150 | Elf_Internal_Rela *internal_relocs, | |
11151 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11152 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11153 | { | |
11154 | /* Local TLS non-pic | |
11155 | sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20 | |
11156 | ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12 | |
11157 | add ra, ta, tp ; TLS_LE_ADD */ | |
11158 | ||
11159 | uint32_t insn; | |
11160 | bfd_vma laddr; | |
11161 | bfd_signed_vma foff; | |
11162 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11163 | ||
11164 | irelend = internal_relocs + sec->reloc_count; | |
11165 | laddr = irel->r_offset; | |
11166 | insn = bfd_getb32 (contents + laddr); | |
11167 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11168 | R_NDS32_PTR_RESOLVED); | |
11169 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11170 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11171 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11172 | ||
11173 | /* The range is +/-16k. */ | |
11174 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
11175 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
11176 | { | |
11177 | /* Transform add to addi. */ | |
11178 | insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0); | |
11179 | irel->r_info = | |
11180 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
11181 | ||
11182 | bfd_putb32 (insn, contents + laddr); | |
11183 | if (i1_irelfn != irelend) | |
11184 | { | |
11185 | i1_irelfn->r_addend |= 1; | |
11186 | *again = TRUE; | |
11187 | } | |
11188 | } | |
11189 | } | |
11190 | ||
11191 | /* Relax LE TLS load store instruction pattern. */ | |
11192 | ||
11193 | static void | |
11194 | nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd, | |
11195 | asection *sec, Elf_Internal_Rela *irel, | |
11196 | Elf_Internal_Rela *internal_relocs, | |
11197 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11198 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11199 | { | |
11200 | ||
11201 | uint32_t insn; | |
11202 | bfd_vma laddr; | |
11203 | bfd_signed_vma foff; | |
11204 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11205 | int success = 0; | |
11206 | ||
11207 | irelend = internal_relocs + sec->reloc_count; | |
11208 | laddr = irel->r_offset; | |
11209 | insn = bfd_getb32 (contents + laddr); | |
11210 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11211 | R_NDS32_PTR_RESOLVED); | |
11212 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11213 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11214 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11215 | ||
11216 | switch ((N32_OP6 (insn) << 8) | (insn & 0xff)) | |
11217 | { | |
11218 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
11219 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
11220 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
11221 | /* The range is +/-16k. */ | |
11222 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
11223 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
11224 | { | |
11225 | insn = | |
11226 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11227 | irel->r_info = | |
11228 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
11229 | success = 1; | |
11230 | break; | |
11231 | } | |
11232 | case (N32_OP6_MEM << 8) | N32_MEM_LH: | |
11233 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
11234 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
11235 | /* The range is +/-32k. */ | |
11236 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1 | |
11237 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1) | |
35c08157 | 11238 | { |
1c8f6a4d KLC |
11239 | insn = |
11240 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11241 | irel->r_info = | |
11242 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1); | |
11243 | success = 1; | |
11244 | break; | |
11245 | } | |
11246 | case (N32_OP6_MEM << 8) | N32_MEM_LW: | |
11247 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
11248 | /* The range is +/-64k. */ | |
11249 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2 | |
11250 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2) | |
11251 | { | |
11252 | insn = | |
11253 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11254 | irel->r_info = | |
11255 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2); | |
11256 | success = 1; | |
11257 | break; | |
11258 | } | |
11259 | default: | |
11260 | break; | |
11261 | } | |
35c08157 | 11262 | |
1c8f6a4d KLC |
11263 | if (success) |
11264 | { | |
11265 | bfd_putb32 (insn, contents + laddr); | |
11266 | if (i1_irelfn != irelend) | |
11267 | { | |
11268 | i1_irelfn->r_addend |= 1; | |
11269 | *again = TRUE; | |
11270 | } | |
11271 | } | |
11272 | } | |
35c08157 | 11273 | |
1c8f6a4d | 11274 | /* Relax PTR relocation for nds32_elf_relax_section. */ |
35c08157 | 11275 | |
1c8f6a4d KLC |
11276 | static bfd_boolean |
11277 | nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
11278 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
11279 | int *seq_len, bfd_byte *contents) | |
11280 | { | |
11281 | Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel; | |
35c08157 | 11282 | |
1c8f6a4d | 11283 | irelend = internal_relocs + sec->reloc_count; |
35c08157 | 11284 | |
1c8f6a4d KLC |
11285 | re_irel = |
11286 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
11287 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
35c08157 | 11288 | |
1c8f6a4d KLC |
11289 | if (re_irel == irelend) |
11290 | { | |
11291 | (*_bfd_error_handler) | |
11292 | ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.", | |
11293 | abfd, (long) irel->r_offset); | |
11294 | return FALSE; | |
11295 | } | |
35c08157 | 11296 | |
1c8f6a4d KLC |
11297 | if (re_irel->r_addend != 1) |
11298 | return FALSE; | |
35c08157 | 11299 | |
1c8f6a4d KLC |
11300 | /* Pointed target is relaxed and no longer needs this void *, |
11301 | change the type to NONE. */ | |
11302 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 11303 | |
1c8f6a4d KLC |
11304 | /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does |
11305 | not exist, it means only count 1 and remove it directly. */ | |
11306 | /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */ | |
11307 | count_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11308 | R_NDS32_PTR_COUNT); | |
11309 | ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11310 | R_NDS32_PTR); | |
11311 | if (count_irel != irelend) | |
11312 | { | |
11313 | if (--count_irel->r_addend > 0) | |
11314 | return FALSE; | |
11315 | } | |
11316 | ||
11317 | if (ptr_irel != irelend) | |
11318 | return FALSE; | |
11319 | ||
11320 | /* If the PTR_COUNT is already 0, remove current instruction. */ | |
11321 | *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset); | |
11322 | *insn_len = 0; | |
11323 | return TRUE; | |
11324 | } | |
11325 | ||
11326 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11327 | ||
11328 | static void | |
11329 | nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11330 | asection *sec, Elf_Internal_Rela *irel, | |
11331 | Elf_Internal_Rela *internal_relocs, | |
11332 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11333 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11334 | { | |
11335 | uint32_t insn; | |
11336 | bfd_signed_vma foff; | |
11337 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11338 | bfd_vma local_sda, laddr; | |
11339 | ||
11340 | irelend = internal_relocs + sec->reloc_count; | |
11341 | laddr = irel->r_offset; | |
11342 | insn = bfd_getb32 (contents + laddr); | |
11343 | ||
11344 | /* FIXME: It's a little trouble to turn JRAL5 to JAL since | |
11345 | we need additional space. It might be help if we could | |
11346 | borrow some space from instructions to be eliminated | |
11347 | such as sethi, ori, add. */ | |
11348 | if (insn & 0x80000000) | |
11349 | return; | |
11350 | ||
11351 | if (nds32_elf_check_dup_relocs | |
11352 | (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF)) | |
11353 | return; | |
11354 | ||
11355 | i1_irelfn = | |
11356 | find_relocs_at_address (irel, internal_relocs, irelend, | |
11357 | R_NDS32_PTR_RESOLVED); | |
11358 | ||
11359 | /* FIXIT 090606 | |
11360 | The boundary should be reduced since the .plt section hasn't | |
11361 | been created and the address of specific entry is still unknown | |
11362 | Maybe the range between the function call and the begin of the | |
11363 | .text section can be used to decide if the .plt is in the range | |
11364 | of function call. */ | |
11365 | ||
11366 | if (N32_OP6 (insn) == N32_OP6_ALU1 | |
11367 | && N32_SUB5 (insn) == N32_ALU1_ADD) | |
11368 | { | |
11369 | /* Get the value of the symbol referred to by the reloc. */ | |
11370 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11371 | &local_sda, FALSE); | |
11372 | foff = (bfd_signed_vma) (calculate_plt_memory_address | |
11373 | (abfd, link_info, isymbuf, irel, | |
11374 | symtab_hdr) - local_sda); | |
11375 | /* This condition only happened when symbol is undefined. */ | |
11376 | if (foff == 0) | |
11377 | return; | |
11378 | ||
11379 | if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT) | |
11380 | return; | |
11381 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11382 | R_NDS32_PLT_GOTREL_LO19); | |
11383 | /* addi.gp */ | |
11384 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
11385 | } | |
11386 | else if (N32_OP6 (insn) == N32_OP6_JREG | |
11387 | && N32_SUB5 (insn) == N32_JREG_JRAL) | |
11388 | { | |
11389 | /* Get the value of the symbol referred to by the reloc. */ | |
11390 | foff = | |
11391 | calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr); | |
11392 | /* This condition only happened when symbol is undefined. */ | |
11393 | if (foff == 0) | |
11394 | return; | |
11395 | if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1) | |
11396 | return; | |
11397 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL); | |
11398 | insn = INSN_JAL; | |
11399 | } | |
11400 | else | |
11401 | return; | |
11402 | ||
11403 | bfd_putb32 (insn, contents + laddr); | |
11404 | if (i1_irelfn != irelend) | |
11405 | { | |
11406 | i1_irelfn->r_addend |= 1; | |
11407 | *again = TRUE; | |
11408 | } | |
11409 | } | |
11410 | ||
11411 | /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11412 | ||
11413 | static void | |
11414 | nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11415 | asection *sec, Elf_Internal_Rela *irel, | |
11416 | Elf_Internal_Rela *internal_relocs, | |
11417 | bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr, | |
11418 | bfd_boolean *again) | |
11419 | { | |
11420 | uint32_t insn; | |
11421 | bfd_signed_vma foff; | |
11422 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11423 | bfd_vma local_sda, laddr; | |
11424 | ||
11425 | irelend = internal_relocs + sec->reloc_count; | |
11426 | laddr = irel->r_offset; | |
11427 | insn = bfd_getb32 (contents + laddr); | |
11428 | if (insn & 0x80000000) | |
11429 | return; | |
11430 | ||
11431 | if (nds32_elf_check_dup_relocs | |
11432 | (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF)) | |
11433 | return; | |
11434 | ||
11435 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11436 | R_NDS32_PTR_RESOLVED); | |
11437 | ||
11438 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11439 | &local_sda, FALSE); | |
11440 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
11441 | symtab_hdr) - local_sda; | |
11442 | ||
11443 | if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT) | |
11444 | { | |
11445 | /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */ | |
11446 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11447 | irel->r_info = | |
11448 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA); | |
11449 | bfd_putb32 (insn, contents + laddr); | |
11450 | if (i1_irelfn != irelend) | |
11451 | { | |
11452 | i1_irelfn->r_addend |= 1; | |
11453 | *again = TRUE; | |
11454 | } | |
11455 | } | |
11456 | } | |
11457 | ||
11458 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11459 | ||
11460 | static void | |
11461 | nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11462 | asection *sec, Elf_Internal_Rela *irel, | |
11463 | Elf_Internal_Rela *internal_relocs, | |
11464 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11465 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11466 | { | |
11467 | int opc_insn_gotoff; | |
11468 | uint32_t insn; | |
11469 | bfd_signed_vma foff; | |
11470 | Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend; | |
11471 | bfd_vma local_sda, laddr; | |
11472 | ||
11473 | irelend = internal_relocs + sec->reloc_count; | |
11474 | laddr = irel->r_offset; | |
11475 | insn = bfd_getb32 (contents + laddr); | |
11476 | ||
11477 | if (insn & 0x80000000) | |
11478 | return; | |
11479 | ||
11480 | if (nds32_elf_check_dup_relocs | |
11481 | (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF)) | |
11482 | return; | |
11483 | ||
11484 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11485 | R_NDS32_PTR_RESOLVED); | |
11486 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11487 | &local_sda, FALSE); | |
11488 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11489 | foff = foff - local_sda; | |
11490 | ||
11491 | if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT) | |
11492 | return; | |
11493 | ||
11494 | /* Concatenate opcode and sub-opcode for switch case. | |
11495 | It may be MEM or ALU1. */ | |
11496 | opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff); | |
11497 | switch (opc_insn_gotoff) | |
11498 | { | |
11499 | case (N32_OP6_MEM << 8) | N32_MEM_LW: | |
11500 | /* 4-byte aligned. */ | |
11501 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11502 | irel->r_info = | |
11503 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11504 | break; | |
11505 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
11506 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
11507 | irel->r_info = | |
11508 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11509 | break; | |
11510 | case (N32_OP6_MEM << 8) | N32_MEM_LH: | |
11511 | /* 2-byte aligned. */ | |
11512 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
11513 | irel->r_info = | |
11514 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11515 | break; | |
11516 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
11517 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); | |
11518 | irel->r_info = | |
11519 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11520 | break; | |
11521 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
11522 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); | |
11523 | irel->r_info = | |
11524 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11525 | break; | |
11526 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
11527 | /* 1-byte aligned. */ | |
11528 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
11529 | irel->r_info = | |
11530 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11531 | break; | |
11532 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
11533 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); | |
11534 | irel->r_info = | |
11535 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11536 | break; | |
11537 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
11538 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
11539 | irel->r_info = | |
11540 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11541 | break; | |
11542 | case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD: | |
11543 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
11544 | irel->r_info = | |
11545 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11546 | break; | |
11547 | default: | |
11548 | return; | |
11549 | } | |
11550 | ||
11551 | bfd_putb32 (insn, contents + laddr); | |
11552 | if (i1_irelfn != irelend) | |
11553 | { | |
11554 | i1_irelfn->r_addend |= 1; | |
11555 | *again = TRUE; | |
11556 | } | |
11557 | if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11558 | R_NDS32_INSN16)) != irelend) | |
11559 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11560 | ||
11561 | } | |
11562 | ||
11563 | static bfd_boolean | |
11564 | nds32_relax_adjust_label (bfd *abfd, asection *sec, | |
11565 | Elf_Internal_Rela *internal_relocs, | |
11566 | bfd_byte *contents, | |
11567 | nds32_elf_blank_t **relax_blank_list, | |
11568 | int optimize, int opt_size) | |
11569 | { | |
11570 | /* This code block is used to adjust 4-byte alignment by relax a pair | |
11571 | of instruction a time. | |
11572 | ||
11573 | It recognizes three types of relocations. | |
11574 | 1. R_NDS32_LABEL - a aligment. | |
11575 | 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit. | |
11576 | 3. is_16bit_NOP () - remove a 16-bit instruction. */ | |
11577 | ||
11578 | /* TODO: It seems currently implementation only support 4-byte aligment. | |
11579 | We should handle any-aligment. */ | |
11580 | ||
11581 | Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel; | |
11582 | Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL; | |
11583 | Elf_Internal_Rela rel_temp; | |
11584 | Elf_Internal_Rela *irelend; | |
11585 | bfd_vma address; | |
11586 | uint16_t insn16; | |
11587 | ||
11588 | /* Checking for branch relaxation relies on the relocations to | |
11589 | be sorted on 'r_offset'. This is not guaranteed so we must sort. */ | |
11590 | nds32_insertion_sort (internal_relocs, sec->reloc_count, | |
11591 | sizeof (Elf_Internal_Rela), compar_reloc); | |
11592 | ||
11593 | irelend = internal_relocs + sec->reloc_count; | |
11594 | ||
11595 | /* Force R_NDS32_LABEL before R_NDS32_INSN16. */ | |
11596 | /* FIXME: Can we generate the right order in assembler? | |
11597 | So we don't have to swapping them here. */ | |
11598 | ||
11599 | for (label_rel = internal_relocs, insn_rel = internal_relocs; | |
11600 | label_rel < irelend; label_rel++) | |
11601 | { | |
11602 | if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL) | |
11603 | continue; | |
11604 | ||
11605 | /* Find the first reloc has the same offset with label_rel. */ | |
11606 | while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset) | |
11607 | insn_rel++; | |
11608 | ||
11609 | for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset; | |
11610 | insn_rel++) | |
11611 | /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same | |
11612 | address. */ | |
11613 | if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16) | |
11614 | break; | |
11615 | ||
11616 | if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset | |
11617 | && insn_rel < label_rel) | |
11618 | { | |
11619 | /* Swap the two reloc if the R_NDS32_INSN16 is | |
11620 | before R_NDS32_LABEL. */ | |
11621 | memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela)); | |
11622 | memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela)); | |
11623 | memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela)); | |
11624 | } | |
11625 | } | |
11626 | ||
11627 | label_rel = NULL; | |
11628 | insn_rel = NULL; | |
11629 | /* If there were a sequence of R_NDS32_LABEL end up with .align 2 | |
11630 | or higher, remove other R_NDS32_LABEL with lower alignment. | |
11631 | If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted, | |
11632 | then the R_NDS32_LABEL sequence is broke. */ | |
11633 | for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++) | |
11634 | { | |
11635 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL) | |
11636 | { | |
11637 | if (label_rel == NULL) | |
11638 | { | |
11639 | if (tmp_rel->r_addend < 2) | |
11640 | label_rel = tmp_rel; | |
11641 | continue; | |
11642 | } | |
11643 | else if (tmp_rel->r_addend > 1) | |
11644 | { | |
11645 | /* Remove all LABEL relocation from label_rel to tmp_rel | |
11646 | including relocations with same offset as tmp_rel. */ | |
11647 | for (tmp2_rel = label_rel; tmp2_rel < tmp_rel | |
11648 | || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++) | |
11649 | { | |
11650 | if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL | |
11651 | && tmp2_rel->r_addend < 2) | |
11652 | tmp2_rel->r_info = | |
11653 | ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info), | |
11654 | R_NDS32_NONE); | |
11655 | } | |
11656 | label_rel = NULL; | |
11657 | } | |
11658 | } | |
11659 | else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel) | |
11660 | { | |
11661 | /* A new INSN16 which can be converted, so clear label_rel. */ | |
11662 | if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs, | |
11663 | irelend, &insn16) | |
11664 | || is_16bit_NOP (abfd, sec, tmp_rel)) | |
11665 | label_rel = NULL; | |
11666 | } | |
11667 | } | |
11668 | ||
11669 | label_rel = NULL; | |
11670 | insn_rel = NULL; | |
11671 | /* Optimized for speed and nothing has not been relaxed. | |
11672 | It's time to align labels. | |
11673 | We may convert a 16-bit instruction right before a label to | |
11674 | 32-bit, in order to align the label if necessary | |
11675 | all reloc entries has been sorted by r_offset. */ | |
11676 | for (irel = internal_relocs; irel < irelend; irel++) | |
11677 | { | |
11678 | if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16 | |
11679 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL) | |
11680 | continue; | |
11681 | ||
11682 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16) | |
11683 | { | |
11684 | /* A new INSN16 found, resize the old one. */ | |
11685 | if (is_convert_32_to_16 | |
11686 | (abfd, sec, irel, internal_relocs, irelend, &insn16) | |
11687 | || is_16bit_NOP (abfd, sec, irel)) | |
11688 | { | |
11689 | if (insn_rel) | |
11690 | { | |
11691 | /* Previous INSN16 reloc exists, reduce its | |
11692 | size to 16-bit. */ | |
11693 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11694 | irelend, &insn16)) | |
35c08157 | 11695 | { |
1c8f6a4d KLC |
11696 | nds32_elf_write_16 (abfd, contents, insn_rel, |
11697 | internal_relocs, irelend, insn16); | |
11698 | ||
11699 | if (!insert_nds32_elf_blank_recalc_total | |
11700 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11701 | return FALSE; | |
11702 | } | |
11703 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11704 | { | |
11705 | if (!insert_nds32_elf_blank_recalc_total | |
11706 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11707 | return FALSE; | |
11708 | } | |
11709 | insn_rel->r_info = | |
11710 | ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE); | |
11711 | } | |
11712 | /* Save the new one for later use. */ | |
11713 | insn_rel = irel; | |
11714 | } | |
11715 | else | |
11716 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11717 | R_NDS32_NONE); | |
11718 | } | |
11719 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL) | |
11720 | { | |
11721 | /* Search for label. */ | |
11722 | int force_relax = 0; | |
11723 | ||
11724 | /* Label on 16-bit instruction or optimization | |
11725 | needless, just reset this reloc. */ | |
11726 | insn16 = bfd_getb16 (contents + irel->r_offset); | |
11727 | if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000))) | |
11728 | { | |
11729 | irel->r_info = | |
11730 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11731 | continue; | |
11732 | } | |
11733 | ||
11734 | address = | |
11735 | irel->r_offset - get_nds32_elf_blank_total (relax_blank_list, | |
11736 | irel->r_offset, 1); | |
11737 | ||
11738 | if (!insn_rel) | |
11739 | { | |
11740 | /* Check if there is case which can not be aligned. */ | |
11741 | if (irel->r_addend == 2 && address & 0x2) | |
11742 | return FALSE; | |
11743 | continue; | |
11744 | } | |
11745 | ||
11746 | /* Try to align this label. */ | |
11747 | ||
11748 | if ((irel->r_addend & 0x1f) < 2) | |
11749 | { | |
11750 | /* Check if there is a INSN16 at the same address. | |
11751 | Label_rel always seats before insn_rel after | |
11752 | our sort. */ | |
11753 | ||
11754 | /* Search for INSN16 at LABEL location. If INSN16 is at | |
11755 | same location and this LABEL alignment is lower than 2, | |
11756 | the INSN16 can be converted to 2-byte. */ | |
11757 | for (tmp_rel = irel; | |
11758 | tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset; | |
11759 | tmp_rel++) | |
11760 | { | |
11761 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 | |
11762 | && (is_convert_32_to_16 | |
11763 | (abfd, sec, tmp_rel, internal_relocs, | |
11764 | irelend, &insn16) | |
11765 | || is_16bit_NOP (abfd, sec, tmp_rel))) | |
11766 | { | |
11767 | force_relax = 1; | |
11768 | break; | |
11769 | } | |
11770 | } | |
11771 | } | |
11772 | ||
11773 | if (force_relax || irel->r_addend == 1 || address & 0x2) | |
11774 | { | |
11775 | /* Label not aligned. */ | |
11776 | /* Previous reloc exists, reduce its size to 16-bit. */ | |
11777 | if (is_convert_32_to_16 (abfd, sec, insn_rel, | |
11778 | internal_relocs, irelend, &insn16)) | |
11779 | { | |
11780 | nds32_elf_write_16 (abfd, contents, insn_rel, | |
11781 | internal_relocs, irelend, insn16); | |
11782 | ||
11783 | if (!insert_nds32_elf_blank_recalc_total | |
11784 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11785 | return FALSE; | |
11786 | } | |
11787 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11788 | { | |
11789 | if (!insert_nds32_elf_blank_recalc_total | |
11790 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11791 | return FALSE; | |
11792 | } | |
11793 | ||
11794 | } | |
11795 | /* INSN16 reloc is used. */ | |
11796 | insn_rel = NULL; | |
11797 | } | |
11798 | } | |
11799 | ||
11800 | address = | |
11801 | sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0); | |
11802 | if (insn_rel && (address & 0x2 || opt_size)) | |
11803 | { | |
11804 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11805 | irelend, &insn16)) | |
11806 | { | |
11807 | nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs, | |
11808 | irelend, insn16); | |
11809 | if (!insert_nds32_elf_blank_recalc_total | |
11810 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11811 | return FALSE; | |
11812 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11813 | R_NDS32_NONE); | |
11814 | } | |
11815 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11816 | { | |
11817 | if (!insert_nds32_elf_blank_recalc_total | |
11818 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11819 | return FALSE; | |
11820 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11821 | R_NDS32_NONE); | |
11822 | } | |
11823 | } | |
11824 | insn_rel = NULL; | |
11825 | return TRUE; | |
11826 | } | |
11827 | ||
11828 | /* Pick relaxation round. */ | |
11829 | ||
11830 | static int | |
11831 | nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again, | |
11832 | struct elf_nds32_link_hash_table *table, | |
11833 | struct bfd_link_info *link_info) | |
11834 | { | |
18393a2e KLC |
11835 | static asection *final_sec, *first_sec = NULL; |
11836 | static bfd_boolean normal_again = FALSE; | |
1c8f6a4d KLC |
11837 | static bfd_boolean set = FALSE; |
11838 | static bfd_boolean first = TRUE; | |
11839 | int round_table[] = { | |
11840 | NDS32_RELAX_NORMAL_ROUND, | |
11841 | NDS32_RELAX_JUMP_IFC_ROUND, | |
11842 | NDS32_RELAX_EX9_BUILD_ROUND, | |
11843 | NDS32_RELAX_EX9_REPLACE_ROUND, | |
11844 | }; | |
11845 | static int pass = 0; | |
11846 | static int relax_round; | |
11847 | ||
18393a2e KLC |
11848 | /* The new round. */ |
11849 | if (init && first_sec == sec) | |
11850 | { | |
11851 | set = TRUE; | |
11852 | normal_again = FALSE; | |
11853 | } | |
11854 | ||
1c8f6a4d KLC |
11855 | if (first) |
11856 | { | |
11857 | /* Run an empty run to get the final section. */ | |
11858 | relax_round = NDS32_RELAX_EMPTY_ROUND; | |
11859 | ||
11860 | /* It has to enter relax again because we can | |
11861 | not make sure what the final turn is. */ | |
11862 | *again = TRUE; | |
18393a2e | 11863 | |
1c8f6a4d | 11864 | first = FALSE; |
18393a2e | 11865 | first_sec = sec; |
1c8f6a4d KLC |
11866 | } |
11867 | ||
18393a2e | 11868 | if (!set) |
1c8f6a4d | 11869 | { |
18393a2e | 11870 | /* Not reenter yet. */ |
1c8f6a4d KLC |
11871 | final_sec = sec; |
11872 | return relax_round; | |
11873 | } | |
11874 | ||
1c8f6a4d KLC |
11875 | relax_round = round_table[pass]; |
11876 | ||
18393a2e KLC |
11877 | if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again) |
11878 | normal_again = TRUE; | |
11879 | ||
1c8f6a4d KLC |
11880 | if (!init && final_sec == sec) |
11881 | { | |
11882 | switch (relax_round) | |
11883 | { | |
11884 | case NDS32_RELAX_NORMAL_ROUND: | |
18393a2e | 11885 | if (!normal_again) |
1c8f6a4d KLC |
11886 | { |
11887 | /* Normal relaxation done. */ | |
11888 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) | |
11889 | { | |
11890 | pass++; | |
11891 | *again = TRUE; | |
11892 | } | |
11893 | else if (table->target_optimize & NDS32_RELAX_EX9_ON) | |
11894 | { | |
11895 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ | |
11896 | *again = TRUE; | |
11897 | } | |
11898 | else if (table->ex9_import_file) | |
11899 | { | |
11900 | /* Import ex9 table. */ | |
11901 | if (table->update_ex9_table) | |
11902 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ | |
11903 | else | |
11904 | pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */ | |
11905 | nds32_elf_ex9_import_table (link_info); | |
11906 | *again = TRUE; | |
11907 | } | |
11908 | } | |
11909 | break; | |
11910 | case NDS32_RELAX_JUMP_IFC_ROUND: | |
11911 | if (!nds32_elf_ifc_finish (link_info)) | |
11912 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); | |
11913 | if (table->target_optimize & NDS32_RELAX_EX9_ON) | |
11914 | { | |
11915 | pass++; | |
11916 | *again = TRUE; | |
11917 | } | |
11918 | break; | |
11919 | case NDS32_RELAX_EX9_BUILD_ROUND: | |
11920 | nds32_elf_ex9_finish (link_info); | |
11921 | pass++; | |
11922 | *again = TRUE; | |
11923 | break; | |
11924 | case NDS32_RELAX_EX9_REPLACE_ROUND: | |
11925 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) | |
11926 | { | |
11927 | /* Do jump IFC optimization again. */ | |
11928 | if (!nds32_elf_ifc_finish (link_info)) | |
11929 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); | |
11930 | } | |
11931 | break; | |
11932 | default: | |
11933 | break; | |
11934 | } | |
11935 | } | |
11936 | ||
11937 | return relax_round; | |
11938 | } | |
11939 | ||
11940 | static bfd_boolean | |
11941 | nds32_elf_relax_section (bfd *abfd, asection *sec, | |
11942 | struct bfd_link_info *link_info, bfd_boolean *again) | |
11943 | { | |
11944 | nds32_elf_blank_t *relax_blank_list = NULL; | |
11945 | Elf_Internal_Shdr *symtab_hdr; | |
11946 | Elf_Internal_Rela *internal_relocs; | |
11947 | Elf_Internal_Rela *irel; | |
11948 | Elf_Internal_Rela *irelend; | |
11949 | Elf_Internal_Sym *isymbuf = NULL; | |
11950 | bfd_byte *contents = NULL; | |
11951 | bfd_boolean result = TRUE; | |
11952 | int optimize = 0; | |
11953 | int opt_size = 0; | |
11954 | uint32_t insn; | |
11955 | uint16_t insn16; | |
11956 | ||
11957 | /* Target dependnet option. */ | |
11958 | struct elf_nds32_link_hash_table *table; | |
11959 | int load_store_relax; | |
11960 | int relax_round; | |
11961 | ||
11962 | relax_blank_list = NULL; | |
11963 | ||
11964 | *again = FALSE; | |
11965 | ||
11966 | /* Nothing to do for | |
11967 | * relocatable link or | |
11968 | * non-relocatable section or | |
11969 | * non-code section or | |
11970 | * empty content or | |
11971 | * no reloc entry. */ | |
0e1862bb | 11972 | if (bfd_link_relocatable (link_info) |
1c8f6a4d KLC |
11973 | || (sec->flags & SEC_RELOC) == 0 |
11974 | || (sec->flags & SEC_EXCLUDE) == 1 | |
11975 | || (sec->flags & SEC_CODE) == 0 | |
11976 | || sec->size == 0) | |
11977 | return TRUE; | |
11978 | ||
11979 | /* 09.12.11 Workaround. */ | |
11980 | /* We have to adjust align for R_NDS32_LABEL if needed. | |
11981 | The adjust approach only can fix 2-byte align once. */ | |
11982 | if (sec->alignment_power > 2) | |
11983 | return TRUE; | |
11984 | ||
11985 | /* The optimization type to do. */ | |
11986 | ||
11987 | table = nds32_elf_hash_table (link_info); | |
11988 | relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info); | |
11989 | switch (relax_round) | |
11990 | { | |
11991 | case NDS32_RELAX_JUMP_IFC_ROUND: | |
11992 | /* Here is the entrance of ifc jump relaxation. */ | |
11993 | if (!nds32_elf_ifc_calc (link_info, abfd, sec)) | |
11994 | return FALSE; | |
11995 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
11996 | return TRUE; | |
11997 | ||
11998 | case NDS32_RELAX_EX9_BUILD_ROUND: | |
11999 | /* Here is the entrance of ex9 relaxation. There are two pass of | |
12000 | ex9 relaxation. The one is to traverse all instructions and build | |
12001 | the hash table. The other one is to compare instructions and replace | |
12002 | it by ex9.it. */ | |
12003 | if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info)) | |
12004 | return FALSE; | |
12005 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
12006 | return TRUE; | |
12007 | ||
12008 | case NDS32_RELAX_EX9_REPLACE_ROUND: | |
12009 | if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec)) | |
12010 | return FALSE; | |
12011 | return TRUE; | |
12012 | ||
12013 | case NDS32_RELAX_EMPTY_ROUND: | |
12014 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
12015 | return TRUE; | |
12016 | ||
12017 | case NDS32_RELAX_NORMAL_ROUND: | |
12018 | default: | |
12019 | if (sec->reloc_count == 0) | |
12020 | return TRUE; | |
12021 | break; | |
12022 | } | |
12023 | ||
12024 | /* The begining of general relaxation. */ | |
12025 | ||
12026 | if (is_SDA_BASE_set == 0) | |
12027 | { | |
12028 | bfd_vma gp; | |
12029 | is_SDA_BASE_set = 1; | |
12030 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
12031 | &gp, FALSE); | |
12032 | relax_range_measurement (abfd); | |
12033 | } | |
12034 | ||
12035 | if (is_ITB_BASE_set == 0) | |
12036 | { | |
12037 | /* Set the _ITB_BASE_. */ | |
12038 | if (!nds32_elf_ex9_itb_base (link_info)) | |
12039 | { | |
12040 | (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), abfd); | |
12041 | bfd_set_error (bfd_error_bad_value); | |
12042 | } | |
12043 | } | |
12044 | ||
12045 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12046 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
12047 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
12048 | TRUE /* keep_memory */); | |
12049 | if (internal_relocs == NULL) | |
12050 | goto error_return; | |
12051 | ||
12052 | irelend = internal_relocs + sec->reloc_count; | |
12053 | irel = find_relocs_at_address (internal_relocs, internal_relocs, | |
12054 | irelend, R_NDS32_RELAX_ENTRY); | |
12055 | ||
12056 | if (irel == irelend) | |
12057 | return TRUE; | |
12058 | ||
12059 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
12060 | { | |
12061 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG) | |
18393a2e KLC |
12062 | { |
12063 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
12064 | return TRUE; | |
12065 | } | |
1c8f6a4d KLC |
12066 | |
12067 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG) | |
12068 | optimize = 1; | |
12069 | ||
12070 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG) | |
12071 | opt_size = 1; | |
12072 | } | |
12073 | ||
12074 | load_store_relax = table->load_store_relax; | |
12075 | ||
12076 | /* Get symbol table and section content. */ | |
0c4bd9d9 | 12077 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
1c8f6a4d KLC |
12078 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
12079 | goto error_return; | |
12080 | ||
12081 | /* Do relax loop only when finalize is not done. | |
12082 | Take care of relaxable relocs except INSN16. */ | |
12083 | for (irel = internal_relocs; irel < irelend; irel++) | |
12084 | { | |
12085 | int seq_len; /* Original length of instruction sequence. */ | |
12086 | int insn_len = 0; /* Final length of instruction sequence. */ | |
12087 | bfd_boolean removed; | |
12088 | ||
12089 | insn = 0; | |
12090 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
12091 | && (irel->r_addend & 0x1f) >= 2) | |
12092 | optimize = 1; | |
12093 | ||
12094 | /* Relocation Types | |
12095 | R_NDS32_LONGCALL1 53 | |
12096 | R_NDS32_LONGCALL2 54 | |
12097 | R_NDS32_LONGCALL3 55 | |
12098 | R_NDS32_LONGJUMP1 56 | |
12099 | R_NDS32_LONGJUMP2 57 | |
12100 | R_NDS32_LONGJUMP3 58 | |
12101 | R_NDS32_LOADSTORE 59 */ | |
12102 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1 | |
12103 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE) | |
12104 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
12105 | ||
12106 | /* Relocation Types | |
12107 | R_NDS32_LONGCALL4 107 | |
12108 | R_NDS32_LONGCALL5 108 | |
12109 | R_NDS32_LONGCALL6 109 | |
12110 | R_NDS32_LONGJUMP4 110 | |
12111 | R_NDS32_LONGJUMP5 111 | |
12112 | R_NDS32_LONGJUMP6 112 | |
12113 | R_NDS32_LONGJUMP7 113 */ | |
12114 | else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4 | |
12115 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7) | |
12116 | seq_len = 4; | |
12117 | ||
12118 | /* Relocation Types | |
12119 | R_NDS32_LO12S0_RELA 30 | |
12120 | R_NDS32_LO12S1_RELA 29 | |
12121 | R_NDS32_LO12S2_RELA 28 | |
12122 | R_NDS32_LO12S2_SP_RELA 71 | |
12123 | R_NDS32_LO12S2_DP_RELA 70 | |
12124 | R_NDS32_GOT_LO12 46 | |
12125 | R_NDS32_GOTOFF_LO12 50 | |
12126 | R_NDS32_PLTREL_LO12 65 | |
12127 | R_NDS32_PLT_GOTREL_LO12 67 | |
12128 | R_NDS32_17IFC_PCREL_RELA 96 | |
12129 | R_NDS32_GOT_SUFF 193 | |
12130 | R_NDS32_GOTOFF_SUFF 194 | |
12131 | R_NDS32_PLT_GOT_SUFF 195 | |
12132 | R_NDS32_MULCALL_SUFF 196 | |
12133 | R_NDS32_PTR 197 */ | |
12134 | else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA | |
12135 | && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA) | |
12136 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA | |
12137 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA | |
12138 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12 | |
12139 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12 | |
12140 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12 | |
12141 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12 | |
12142 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12 | |
12143 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF | |
12144 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR) | |
12145 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA | |
12146 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12 | |
12147 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD | |
12148 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS) | |
12149 | seq_len = 0; | |
12150 | else | |
12151 | continue; | |
12152 | ||
12153 | insn_len = seq_len; | |
12154 | removed = FALSE; | |
12155 | ||
12156 | switch (ELF32_R_TYPE (irel->r_info)) | |
12157 | { | |
12158 | case R_NDS32_LONGCALL1: | |
12159 | removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs, | |
12160 | &insn_len, contents, isymbuf, | |
12161 | symtab_hdr); | |
12162 | break; | |
12163 | case R_NDS32_LONGCALL2: | |
12164 | removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs, | |
12165 | &insn_len, contents, isymbuf, | |
12166 | symtab_hdr); | |
12167 | break; | |
12168 | case R_NDS32_LONGCALL3: | |
12169 | removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs, | |
12170 | &insn_len, contents, isymbuf, | |
12171 | symtab_hdr); | |
12172 | break; | |
12173 | case R_NDS32_LONGJUMP1: | |
12174 | removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs, | |
12175 | &insn_len, contents, isymbuf, | |
12176 | symtab_hdr); | |
12177 | break; | |
12178 | case R_NDS32_LONGJUMP2: | |
12179 | removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs, | |
12180 | &insn_len, contents, isymbuf, | |
12181 | symtab_hdr); | |
12182 | break; | |
12183 | case R_NDS32_LONGJUMP3: | |
12184 | removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs, | |
12185 | &insn_len, contents, isymbuf, | |
12186 | symtab_hdr); | |
12187 | break; | |
12188 | case R_NDS32_LONGCALL4: | |
12189 | removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs, | |
12190 | &insn_len, contents, isymbuf, | |
12191 | symtab_hdr); | |
12192 | break; | |
12193 | case R_NDS32_LONGCALL5: | |
12194 | removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs, | |
12195 | &insn_len, contents, isymbuf, | |
12196 | symtab_hdr); | |
12197 | break; | |
12198 | case R_NDS32_LONGCALL6: | |
12199 | removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs, | |
12200 | &insn_len, contents, isymbuf, | |
12201 | symtab_hdr); | |
12202 | break; | |
12203 | case R_NDS32_LONGJUMP4: | |
12204 | removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs, | |
12205 | &insn_len, contents, isymbuf, | |
12206 | symtab_hdr); | |
12207 | break; | |
12208 | case R_NDS32_LONGJUMP5: | |
12209 | removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs, | |
12210 | &insn_len, &seq_len, contents, | |
12211 | isymbuf, symtab_hdr); | |
12212 | break; | |
12213 | case R_NDS32_LONGJUMP6: | |
12214 | removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs, | |
12215 | &insn_len, &seq_len, contents, | |
12216 | isymbuf, symtab_hdr); | |
12217 | break; | |
12218 | case R_NDS32_LONGJUMP7: | |
12219 | removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs, | |
12220 | &insn_len, &seq_len, contents, | |
12221 | isymbuf, symtab_hdr); | |
12222 | break; | |
12223 | case R_NDS32_LOADSTORE: | |
12224 | removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel, | |
12225 | internal_relocs, &insn_len, | |
12226 | contents, isymbuf, symtab_hdr, | |
12227 | load_store_relax); | |
12228 | break; | |
12229 | case R_NDS32_LO12S0_RELA: | |
12230 | case R_NDS32_LO12S1_RELA: | |
12231 | case R_NDS32_LO12S2_DP_RELA: | |
12232 | case R_NDS32_LO12S2_SP_RELA: | |
12233 | case R_NDS32_LO12S2_RELA: | |
12234 | /* Relax for low part. */ | |
12235 | nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs, | |
12236 | contents, isymbuf, symtab_hdr); | |
12237 | ||
12238 | /* It is impossible to delete blank, so just continue. */ | |
12239 | continue; | |
12240 | case R_NDS32_GOT_LO12: | |
12241 | case R_NDS32_GOTOFF_LO12: | |
12242 | case R_NDS32_PLTREL_LO12: | |
12243 | case R_NDS32_PLT_GOTREL_LO12: | |
12244 | case R_NDS32_GOTPC_LO12: | |
12245 | /* Relax for PIC gp-relative low part. */ | |
12246 | nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents, | |
12247 | isymbuf, symtab_hdr); | |
35c08157 | 12248 | |
1c8f6a4d KLC |
12249 | /* It is impossible to delete blank, so just continue. */ |
12250 | continue; | |
12251 | case R_NDS32_TLS_LE_LO12: | |
12252 | /* Relax for LE TLS low part. */ | |
12253 | nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents, | |
12254 | isymbuf, symtab_hdr); | |
35c08157 | 12255 | |
1c8f6a4d KLC |
12256 | /* It is impossible to delete blank, so just continue. */ |
12257 | continue; | |
12258 | case R_NDS32_TLS_LE_ADD: | |
12259 | nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs, | |
12260 | contents, isymbuf, symtab_hdr, again); | |
12261 | /* It is impossible to delete blank, so just continue. */ | |
12262 | continue; | |
12263 | case R_NDS32_TLS_LE_LS: | |
12264 | nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs, | |
12265 | contents, isymbuf, symtab_hdr, again); | |
12266 | continue; | |
12267 | case R_NDS32_PTR: | |
12268 | removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs, | |
12269 | &insn_len, &seq_len, contents); | |
12270 | break; | |
12271 | case R_NDS32_PLT_GOT_SUFF: | |
12272 | nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel, | |
12273 | internal_relocs, contents, | |
12274 | isymbuf, symtab_hdr, again); | |
12275 | /* It is impossible to delete blank, so just continue. */ | |
12276 | continue; | |
12277 | case R_NDS32_GOT_SUFF: | |
12278 | nds32_elf_relax_got_suff (link_info, abfd, sec, irel, | |
12279 | internal_relocs, contents, | |
12280 | symtab_hdr, again); | |
12281 | /* It is impossible to delete blank, so just continue. */ | |
12282 | continue; | |
12283 | case R_NDS32_GOTOFF_SUFF: | |
12284 | nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel, | |
12285 | internal_relocs, contents, | |
12286 | isymbuf, symtab_hdr, again); | |
12287 | /* It is impossible to delete blank, so just continue. */ | |
12288 | continue; | |
12289 | default: | |
12290 | continue; | |
12291 | ||
12292 | } | |
12293 | if (removed && seq_len - insn_len > 0) | |
12294 | { | |
12295 | if (!insert_nds32_elf_blank | |
12296 | (&relax_blank_list, irel->r_offset + insn_len, | |
12297 | seq_len - insn_len)) | |
12298 | goto error_return; | |
12299 | *again = TRUE; | |
35c08157 | 12300 | } |
1c8f6a4d KLC |
12301 | } |
12302 | ||
12303 | calc_nds32_blank_total (relax_blank_list); | |
12304 | ||
12305 | if (table->relax_fp_as_gp) | |
12306 | { | |
12307 | if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs, | |
12308 | irelend, isymbuf)) | |
12309 | goto error_return; | |
35c08157 | 12310 | |
1c8f6a4d | 12311 | if (*again == FALSE) |
35c08157 | 12312 | { |
1c8f6a4d KLC |
12313 | if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs, |
12314 | irelend)) | |
12315 | goto error_return; | |
35c08157 KLC |
12316 | } |
12317 | } | |
1c8f6a4d KLC |
12318 | |
12319 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
12320 | ||
12321 | if (*again == FALSE) | |
12322 | { | |
12323 | if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents, | |
12324 | &relax_blank_list, optimize, opt_size)) | |
12325 | goto error_return; | |
12326 | } | |
12327 | ||
12328 | /* It doesn't matter optimize_for_space_no_align anymore. | |
35c08157 KLC |
12329 | If object file is assembled with flag '-Os', |
12330 | the we don't adjust jump-destination on 4-byte boundary. */ | |
12331 | ||
12332 | if (relax_blank_list) | |
12333 | { | |
12334 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
12335 | relax_blank_list = NULL; | |
12336 | } | |
12337 | ||
12338 | if (*again == FALSE) | |
12339 | { | |
12340 | /* Closing the section, so we don't relax it anymore. */ | |
12341 | bfd_vma sec_size_align; | |
12342 | Elf_Internal_Rela *tmp_rel; | |
12343 | ||
12344 | /* Pad to alignment boundary. Only handle current section alignment. */ | |
609332f1 NC |
12345 | sec_size_align = (sec->size + (~((-1U) << sec->alignment_power))) |
12346 | & ((-1U) << sec->alignment_power); | |
35c08157 KLC |
12347 | if ((sec_size_align - sec->size) & 0x2) |
12348 | { | |
12349 | insn16 = NDS32_NOP16; | |
12350 | bfd_putb16 (insn16, contents + sec->size); | |
12351 | sec->size += 2; | |
12352 | } | |
12353 | ||
12354 | while (sec_size_align != sec->size) | |
12355 | { | |
12356 | insn = NDS32_NOP32; | |
12357 | bfd_putb32 (insn, contents + sec->size); | |
12358 | sec->size += 4; | |
12359 | } | |
12360 | ||
1c8f6a4d KLC |
12361 | tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs, |
12362 | irelend, R_NDS32_RELAX_ENTRY); | |
35c08157 KLC |
12363 | if (tmp_rel != irelend) |
12364 | tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG; | |
12365 | ||
12366 | clean_nds32_elf_blank (); | |
12367 | } | |
12368 | ||
12369 | finish: | |
12370 | if (internal_relocs != NULL | |
12371 | && elf_section_data (sec)->relocs != internal_relocs) | |
12372 | free (internal_relocs); | |
12373 | ||
12374 | if (contents != NULL | |
12375 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12376 | free (contents); | |
12377 | ||
12378 | if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf) | |
12379 | free (isymbuf); | |
12380 | ||
12381 | return result; | |
12382 | ||
12383 | error_return: | |
12384 | result = FALSE; | |
12385 | goto finish; | |
12386 | } | |
12387 | ||
12388 | static struct bfd_elf_special_section const nds32_elf_special_sections[] = | |
12389 | { | |
12390 | {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE}, | |
12391 | {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE}, | |
12392 | {NULL, 0, 0, 0, 0} | |
12393 | }; | |
12394 | ||
12395 | static bfd_boolean | |
12396 | nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED, | |
12397 | struct bfd_link_info *info, | |
12398 | void *finfo ATTRIBUTE_UNUSED, | |
12399 | bfd_boolean (*func) (void *, const char *, | |
12400 | Elf_Internal_Sym *, | |
12401 | asection *, | |
12402 | struct elf_link_hash_entry *) | |
12403 | ATTRIBUTE_UNUSED) | |
12404 | { | |
12405 | FILE *sym_ld_script = NULL; | |
12406 | struct elf_nds32_link_hash_table *table; | |
12407 | ||
12408 | table = nds32_elf_hash_table (info); | |
12409 | sym_ld_script = table->sym_ld_script; | |
12410 | ||
12411 | if (check_start_export_sym) | |
12412 | fprintf (sym_ld_script, "}\n"); | |
12413 | ||
12414 | return TRUE; | |
12415 | } | |
12416 | ||
12417 | static enum elf_reloc_type_class | |
12418 | nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
12419 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
12420 | const Elf_Internal_Rela *rela) | |
12421 | { | |
12422 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
12423 | { | |
12424 | case R_NDS32_RELATIVE: | |
12425 | return reloc_class_relative; | |
12426 | case R_NDS32_JMP_SLOT: | |
12427 | return reloc_class_plt; | |
12428 | case R_NDS32_COPY: | |
12429 | return reloc_class_copy; | |
12430 | default: | |
12431 | return reloc_class_normal; | |
12432 | } | |
12433 | } | |
12434 | ||
12435 | /* Put target dependent option into info hash table. */ | |
12436 | void | |
12437 | bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info, | |
12438 | int relax_fp_as_gp, | |
12439 | int eliminate_gc_relocs, | |
12440 | FILE * sym_ld_script, int load_store_relax, | |
12441 | int target_optimize, int relax_status, | |
12442 | int relax_round, FILE * ex9_export_file, | |
12443 | FILE * ex9_import_file, | |
12444 | int update_ex9_table, int ex9_limit, | |
12445 | bfd_boolean ex9_loop_aware, | |
12446 | bfd_boolean ifc_loop_aware) | |
12447 | { | |
12448 | struct elf_nds32_link_hash_table *table; | |
12449 | ||
12450 | table = nds32_elf_hash_table (link_info); | |
12451 | if (table == NULL) | |
12452 | return; | |
12453 | ||
12454 | table->relax_fp_as_gp = relax_fp_as_gp; | |
12455 | table->eliminate_gc_relocs = eliminate_gc_relocs; | |
12456 | table->sym_ld_script = sym_ld_script; | |
12457 | table ->load_store_relax = load_store_relax; | |
12458 | table->target_optimize = target_optimize; | |
12459 | table->relax_status = relax_status; | |
12460 | table->relax_round = relax_round; | |
12461 | table->ex9_export_file = ex9_export_file; | |
12462 | table->ex9_import_file = ex9_import_file; | |
12463 | table->update_ex9_table = update_ex9_table; | |
12464 | table->ex9_limit = ex9_limit; | |
12465 | table->ex9_loop_aware = ex9_loop_aware; | |
12466 | table->ifc_loop_aware = ifc_loop_aware; | |
12467 | } | |
12468 | \f | |
12469 | /* These functions and data-structures are used for fp-as-gp | |
12470 | optimization. */ | |
12471 | ||
12472 | #define FAG_THRESHOLD 3 /* At least 3 gp-access. */ | |
1c8f6a4d KLC |
12473 | /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between |
12474 | the read-only section and read-write section. */ | |
12475 | #define FAG_WINDOW (508 - 32) | |
35c08157 KLC |
12476 | |
12477 | /* An nds32_fag represent a gp-relative access. | |
12478 | We find best fp-base by using a sliding window | |
12479 | to find a base address which can cover most gp-access. */ | |
12480 | struct nds32_fag | |
12481 | { | |
12482 | struct nds32_fag *next; /* NULL-teminated linked list. */ | |
12483 | bfd_vma addr; /* The address of this fag. */ | |
12484 | Elf_Internal_Rela **relas; /* The relocations associated with this fag. | |
12485 | It is used for applying FP7U2_FLAG. */ | |
12486 | int count; /* How many times this address is referred. | |
12487 | There should be exactly `count' relocations | |
12488 | in relas. */ | |
12489 | int relas_capcity; /* The buffer size of relas. | |
12490 | We use an array instead of linked-list, | |
12491 | and realloc is used to adjust buffer size. */ | |
12492 | }; | |
12493 | ||
12494 | static void | |
12495 | nds32_fag_init (struct nds32_fag *head) | |
12496 | { | |
12497 | memset (head, 0, sizeof (struct nds32_fag)); | |
12498 | } | |
12499 | ||
12500 | static void | |
12501 | nds32_fag_verify (struct nds32_fag *head) | |
12502 | { | |
12503 | struct nds32_fag *iter; | |
12504 | struct nds32_fag *prev; | |
12505 | ||
12506 | prev = NULL; | |
12507 | iter = head->next; | |
12508 | while (iter) | |
12509 | { | |
12510 | if (prev && prev->addr >= iter->addr) | |
12511 | puts ("Bug in fp-as-gp insertion."); | |
12512 | prev = iter; | |
12513 | iter = iter->next; | |
12514 | } | |
12515 | } | |
12516 | ||
12517 | /* Insert a fag in ascending order. | |
12518 | If a fag of the same address already exists, | |
12519 | they are chained by relas array. */ | |
12520 | ||
12521 | static void | |
12522 | nds32_fag_insert (struct nds32_fag *head, bfd_vma addr, | |
12523 | Elf_Internal_Rela * rel) | |
12524 | { | |
12525 | struct nds32_fag *iter; | |
12526 | struct nds32_fag *new_fag; | |
12527 | const int INIT_RELAS_CAP = 4; | |
12528 | ||
12529 | for (iter = head; | |
12530 | iter->next && iter->next->addr <= addr; | |
12531 | iter = iter->next) | |
12532 | /* Find somewhere to insert. */ ; | |
12533 | ||
12534 | /* `iter' will be equal to `head' if the list is empty. */ | |
12535 | if (iter != head && iter->addr == addr) | |
12536 | { | |
12537 | /* The address exists in the list. | |
12538 | Insert `rel' into relocation list, relas. */ | |
12539 | ||
12540 | /* Check whether relas is big enough. */ | |
12541 | if (iter->count >= iter->relas_capcity) | |
12542 | { | |
12543 | iter->relas_capcity *= 2; | |
12544 | iter->relas = bfd_realloc | |
12545 | (iter->relas, iter->relas_capcity * sizeof (void *)); | |
12546 | } | |
12547 | iter->relas[iter->count++] = rel; | |
12548 | return; | |
12549 | } | |
12550 | ||
12551 | /* This is a new address. Create a fag node for it. */ | |
12552 | new_fag = bfd_malloc (sizeof (struct nds32_fag)); | |
12553 | memset (new_fag, 0, sizeof (*new_fag)); | |
12554 | new_fag->addr = addr; | |
12555 | new_fag->count = 1; | |
12556 | new_fag->next = iter->next; | |
12557 | new_fag->relas_capcity = INIT_RELAS_CAP; | |
12558 | new_fag->relas = (Elf_Internal_Rela **) | |
12559 | bfd_malloc (new_fag->relas_capcity * sizeof (void *)); | |
12560 | new_fag->relas[0] = rel; | |
12561 | iter->next = new_fag; | |
12562 | ||
12563 | nds32_fag_verify (head); | |
12564 | } | |
12565 | ||
12566 | static void | |
12567 | nds32_fag_free_list (struct nds32_fag *head) | |
12568 | { | |
12569 | struct nds32_fag *iter; | |
12570 | ||
12571 | iter = head->next; | |
12572 | while (iter) | |
12573 | { | |
12574 | struct nds32_fag *tmp = iter; | |
12575 | iter = iter->next; | |
12576 | free (tmp->relas); | |
12577 | tmp->relas = NULL; | |
12578 | free (tmp); | |
12579 | } | |
12580 | } | |
12581 | ||
35c08157 KLC |
12582 | /* Find the best fp-base address. |
12583 | The relocation associated with that address is returned, | |
12584 | so we can track the symbol instead of a fixed address. | |
12585 | ||
12586 | When relaxation, the address of an datum may change, | |
12587 | because a text section is shrinked, so the data section | |
1c8f6a4d | 12588 | moves forward. If the aligments of text and data section |
35c08157 KLC |
12589 | are different, their distance may change too. |
12590 | Therefore, tracking a fixed address is not appriate. */ | |
12591 | ||
12592 | static int | |
12593 | nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp) | |
12594 | { | |
12595 | struct nds32_fag *base; /* First fag in the window. */ | |
12596 | struct nds32_fag *last; /* First fag outside the window. */ | |
12597 | int accu = 0; /* Usage accumulation. */ | |
12598 | struct nds32_fag *best; /* Best fag. */ | |
12599 | int baccu = 0; /* Best accumulation. */ | |
12600 | ||
12601 | /* Use first fag for initial, and find the last fag in the window. | |
12602 | ||
12603 | In each iteration, we could simply subtract previous fag | |
12604 | and accumulate following fags which are inside the window, | |
12605 | untill we each the end. */ | |
12606 | ||
1c8f6a4d KLC |
12607 | if (head->next == NULL) |
12608 | { | |
12609 | *bestpp = NULL; | |
12610 | return 0; | |
12611 | } | |
35c08157 KLC |
12612 | |
12613 | /* Initialize base. */ | |
12614 | base = head->next; | |
12615 | best = base; | |
12616 | for (last = base; | |
12617 | last && last->addr < base->addr + FAG_WINDOW; | |
12618 | last = last->next) | |
12619 | accu += last->count; | |
12620 | ||
12621 | baccu = accu; | |
12622 | ||
12623 | /* Record the best base in each iteration. */ | |
12624 | while (base->next) | |
1c8f6a4d KLC |
12625 | { |
12626 | accu -= base->count; | |
12627 | base = base->next; | |
12628 | /* Account fags in window. */ | |
12629 | for (/* Nothing. */; | |
12630 | last && last->addr < base->addr + FAG_WINDOW; | |
12631 | last = last->next) | |
12632 | accu += last->count; | |
12633 | ||
12634 | /* A better fp-base? */ | |
12635 | if (accu > baccu) | |
12636 | { | |
12637 | best = base; | |
12638 | baccu = accu; | |
12639 | } | |
12640 | } | |
35c08157 KLC |
12641 | |
12642 | if (bestpp) | |
12643 | *bestpp = best; | |
12644 | return baccu; | |
12645 | } | |
12646 | ||
12647 | /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses, | |
12648 | so we can convert it fo fp-relative access later. | |
12649 | `best_fag' is the best fp-base. Only those inside the window | |
12650 | of best_fag is applied the flag. */ | |
12651 | ||
12652 | static bfd_boolean | |
12653 | nds32_fag_mark_relax (struct bfd_link_info *link_info, | |
12654 | bfd *abfd, struct nds32_fag *best_fag, | |
12655 | Elf_Internal_Rela *internal_relocs, | |
12656 | Elf_Internal_Rela *irelend) | |
12657 | { | |
12658 | struct nds32_fag *ifag; | |
12659 | bfd_vma best_fpbase, gp; | |
12660 | bfd *output_bfd; | |
12661 | ||
12662 | output_bfd = abfd->sections->output_section->owner; | |
12663 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
12664 | best_fpbase = best_fag->addr; | |
12665 | ||
1c8f6a4d KLC |
12666 | if (best_fpbase > gp + sdata_range[1][1] |
12667 | || best_fpbase < gp - sdata_range[1][0]) | |
35c08157 KLC |
12668 | return FALSE; |
12669 | ||
12670 | /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag, | |
12671 | so we know they can be converted to lwi37.fp. */ | |
12672 | for (ifag = best_fag; | |
12673 | ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next) | |
12674 | { | |
12675 | int i; | |
12676 | ||
12677 | for (i = 0; i < ifag->count; i++) | |
12678 | { | |
12679 | Elf_Internal_Rela *insn16_rel; | |
12680 | Elf_Internal_Rela *fag_rel; | |
12681 | ||
12682 | fag_rel = ifag->relas[i]; | |
12683 | ||
12684 | /* Only if this is within the WINDOWS, FP7U2_FLAG | |
12685 | is applied. */ | |
12686 | ||
12687 | insn16_rel = find_relocs_at_address | |
12688 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12689 | ||
12690 | if (insn16_rel != irelend) | |
12691 | insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG; | |
12692 | } | |
12693 | } | |
12694 | return TRUE; | |
12695 | } | |
12696 | ||
1c8f6a4d KLC |
12697 | /* Reset INSN16 to clean fp as gp. */ |
12698 | ||
12699 | static void | |
12700 | nds32_fag_unmark_relax (struct nds32_fag *fag, | |
12701 | Elf_Internal_Rela *internal_relocs, | |
12702 | Elf_Internal_Rela *irelend) | |
12703 | { | |
12704 | struct nds32_fag *ifag; | |
12705 | int i; | |
12706 | Elf_Internal_Rela *insn16_rel; | |
12707 | Elf_Internal_Rela *fag_rel; | |
12708 | ||
12709 | for (ifag = fag; ifag; ifag = ifag->next) | |
12710 | { | |
12711 | for (i = 0; i < ifag->count; i++) | |
12712 | { | |
12713 | fag_rel = ifag->relas[i]; | |
12714 | ||
12715 | /* Restore the INSN16 relocation. */ | |
12716 | insn16_rel = find_relocs_at_address | |
12717 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12718 | ||
12719 | if (insn16_rel != irelend) | |
12720 | insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG; | |
12721 | } | |
12722 | } | |
12723 | } | |
12724 | ||
35c08157 KLC |
12725 | /* This is the main function of fp-as-gp optimization. |
12726 | It should be called by relax_section. */ | |
12727 | ||
12728 | static bfd_boolean | |
12729 | nds32_relax_fp_as_gp (struct bfd_link_info *link_info, | |
12730 | bfd *abfd, asection *sec, | |
12731 | Elf_Internal_Rela *internal_relocs, | |
12732 | Elf_Internal_Rela *irelend, | |
12733 | Elf_Internal_Sym *isymbuf) | |
12734 | { | |
12735 | Elf_Internal_Rela *begin_rel = NULL; | |
12736 | Elf_Internal_Rela *irel; | |
12737 | struct nds32_fag fag_head; | |
12738 | Elf_Internal_Shdr *symtab_hdr; | |
12739 | bfd_byte *contents; | |
1c8f6a4d | 12740 | bfd_boolean ifc_inside = FALSE; |
35c08157 KLC |
12741 | |
12742 | /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */ | |
12743 | ||
12744 | /* Per-function fp-base selection. | |
12745 | 1. Create a list for all the gp-relative access. | |
12746 | 2. Base on those gp-relative address, | |
12747 | find a fp-base which can cover most access. | |
12748 | 3. Use the fp-base for fp-as-gp relaxation. | |
12749 | ||
12750 | NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times), | |
12751 | we should | |
12752 | 1. delete the `la $fp, _FP_BASE_' instruction and | |
12753 | 2. not convert lwi.gp to lwi37.fp. | |
12754 | ||
12755 | To delete the _FP_BASE_ instruction, we simply apply | |
12756 | R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it. | |
12757 | ||
12758 | To suppress the conversion, we simply NOT to apply | |
12759 | R_NDS32_INSN16_FP7U2_FLAG flag. */ | |
12760 | ||
12761 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12762 | ||
0c4bd9d9 | 12763 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
35c08157 KLC |
12764 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
12765 | return FALSE; | |
12766 | ||
12767 | /* Check whether it is worth for fp-as-gp optimization, | |
12768 | i.e., at least 3 gp-load. | |
12769 | ||
12770 | Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT | |
12771 | apply this optimization. */ | |
12772 | ||
12773 | for (irel = internal_relocs; irel < irelend; irel++) | |
12774 | { | |
12775 | /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region. | |
12776 | One we enter the begin of the region, we track all the LW/ST | |
12777 | instructions, so when we leave the region, we try to find | |
12778 | the best fp-base address for those LW/ST instructions. */ | |
12779 | ||
12780 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12781 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12782 | { | |
12783 | /* Begin of the region. */ | |
12784 | if (begin_rel) | |
12785 | (*_bfd_error_handler) (_("%B: Nested OMIT_FP in %A."), abfd, sec); | |
12786 | ||
12787 | begin_rel = irel; | |
12788 | nds32_fag_init (&fag_head); | |
1c8f6a4d | 12789 | ifc_inside = FALSE; |
35c08157 KLC |
12790 | } |
12791 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12792 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12793 | { | |
12794 | int accu; | |
1c8f6a4d | 12795 | struct nds32_fag *best_fag, *tmp_fag; |
35c08157 KLC |
12796 | int dist; |
12797 | ||
12798 | /* End of the region. | |
12799 | Check whether it is worth to do fp-as-gp. */ | |
12800 | ||
12801 | if (begin_rel == NULL) | |
12802 | { | |
12803 | (*_bfd_error_handler) (_("%B: Unmatched OMIT_FP in %A."), abfd, sec); | |
12804 | continue; | |
12805 | } | |
12806 | ||
12807 | accu = nds32_fag_find_base (&fag_head, &best_fag); | |
12808 | ||
1c8f6a4d KLC |
12809 | /* Clean FP7U2_FLAG because they may set ever. */ |
12810 | tmp_fag = fag_head.next; | |
12811 | nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend); | |
12812 | ||
35c08157 KLC |
12813 | /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */ |
12814 | if (accu < FAG_THRESHOLD | |
12815 | || !nds32_fag_mark_relax (link_info, abfd, best_fag, | |
12816 | internal_relocs, irelend)) | |
12817 | { | |
12818 | /* Not worth to do fp-as-gp. */ | |
12819 | begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12820 | begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12821 | irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12822 | irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12823 | nds32_fag_free_list (&fag_head); | |
12824 | begin_rel = NULL; | |
12825 | continue; | |
12826 | } | |
12827 | ||
12828 | /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler, | |
12829 | so we use it to record the distance to the reloction of best | |
12830 | fp-base. */ | |
12831 | dist = best_fag->relas[0] - begin_rel; | |
12832 | BFD_ASSERT (dist > 0 && dist < 0xffffff); | |
12833 | /* Use high 16 bits of addend to record the _FP_BASE_ matched | |
12834 | relocation. And get the base value when relocating. */ | |
1c8f6a4d | 12835 | begin_rel->r_addend &= (0x1 << 16) - 1; |
35c08157 KLC |
12836 | begin_rel->r_addend |= dist << 16; |
12837 | ||
12838 | nds32_fag_free_list (&fag_head); | |
12839 | begin_rel = NULL; | |
12840 | } | |
12841 | ||
1c8f6a4d | 12842 | if (begin_rel == NULL || ifc_inside) |
35c08157 KLC |
12843 | /* Skip if we are not in the region of fp-as-gp. */ |
12844 | continue; | |
12845 | ||
12846 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA | |
12847 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA) | |
12848 | { | |
12849 | bfd_vma addr; | |
12850 | uint32_t insn; | |
12851 | ||
12852 | /* A gp-relative access is found. Insert it to the fag-list. */ | |
12853 | ||
12854 | /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */ | |
12855 | insn = bfd_getb32 (contents + irel->r_offset); | |
12856 | if (!N32_IS_RT3 (insn)) | |
12857 | continue; | |
12858 | ||
12859 | addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
12860 | nds32_fag_insert (&fag_head, addr, irel); | |
12861 | } | |
12862 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA) | |
12863 | { | |
12864 | begin_rel = NULL; | |
12865 | } | |
1c8f6a4d KLC |
12866 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA |
12867 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) | |
12868 | { | |
12869 | /* Suppress fp as gp when encounter ifc. */ | |
12870 | ifc_inside = TRUE; | |
12871 | } | |
35c08157 KLC |
12872 | } |
12873 | ||
12874 | return TRUE; | |
12875 | } | |
12876 | ||
12877 | /* Remove unused `la $fp, _FD_BASE_' instruction. */ | |
12878 | ||
12879 | static bfd_boolean | |
12880 | nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec, | |
12881 | Elf_Internal_Rela *internal_relocs, | |
12882 | Elf_Internal_Rela *irelend) | |
12883 | { | |
12884 | Elf_Internal_Rela *irel; | |
12885 | Elf_Internal_Shdr *symtab_hdr; | |
12886 | bfd_byte *contents = NULL; | |
12887 | nds32_elf_blank_t *relax_blank_list = NULL; | |
12888 | bfd_boolean result = TRUE; | |
12889 | bfd_boolean unused_region = FALSE; | |
12890 | ||
12891 | /* | |
12892 | NOTE: Disable fp-as-gp if we encounter ifcall relocations. | |
12893 | * R_NDS32_17IFC_PCREL_RELA | |
12894 | * R_NDS32_10IFCU_PCREL_RELA | |
12895 | ||
12896 | CASE?????????????? | |
12897 | */ | |
12898 | ||
12899 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
0c4bd9d9 | 12900 | nds32_get_section_contents (abfd, sec, &contents, TRUE); |
35c08157 KLC |
12901 | |
12902 | for (irel = internal_relocs; irel < irelend; irel++) | |
12903 | { | |
12904 | /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP | |
12905 | we marked to in previous pass. | |
12906 | DO NOT scan relocations again, since we've alreadly decided it | |
12907 | and set the flag. */ | |
12908 | const char *syname; | |
12909 | int syndx; | |
12910 | uint32_t insn; | |
12911 | ||
12912 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12913 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12914 | unused_region = TRUE; | |
12915 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12916 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12917 | unused_region = FALSE; | |
12918 | ||
12919 | /* We're not in the region. */ | |
12920 | if (!unused_region) | |
12921 | continue; | |
12922 | ||
12923 | /* _FP_BASE_ must be a GLOBAL symbol. */ | |
12924 | syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
12925 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
12926 | continue; | |
12927 | ||
12928 | /* The symbol name must be _FP_BASE_. */ | |
12929 | syname = elf_sym_hashes (abfd)[syndx]->root.root.string; | |
12930 | if (strcmp (syname, FP_BASE_NAME) != 0) | |
12931 | continue; | |
12932 | ||
12933 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA) | |
12934 | { | |
12935 | /* addi.gp $fp, -256 */ | |
12936 | insn = bfd_getb32 (contents + irel->r_offset); | |
12937 | if (insn != INSN_ADDIGP_TO_FP) | |
12938 | continue; | |
12939 | } | |
12940 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA) | |
12941 | { | |
12942 | /* addi $fp, $gp, -256 */ | |
12943 | insn = bfd_getb32 (contents + irel->r_offset); | |
12944 | if (insn != INSN_ADDI_GP_TO_FP) | |
12945 | continue; | |
12946 | } | |
12947 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA) | |
12948 | { | |
12949 | /* movi $fp, FP_BASE */ | |
12950 | insn = bfd_getb32 (contents + irel->r_offset); | |
12951 | if (insn != INSN_MOVI_TO_FP) | |
12952 | continue; | |
12953 | } | |
12954 | else | |
12955 | continue; | |
12956 | ||
12957 | /* We got here because a FP_BASE instruction is found. */ | |
12958 | if (!insert_nds32_elf_blank_recalc_total | |
12959 | (&relax_blank_list, irel->r_offset, 4)) | |
12960 | goto error_return; | |
12961 | } | |
12962 | ||
12963 | finish: | |
12964 | if (relax_blank_list) | |
12965 | { | |
12966 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
12967 | relax_blank_list = NULL; | |
12968 | } | |
12969 | return result; | |
12970 | ||
12971 | error_return: | |
12972 | result = FALSE; | |
12973 | goto finish; | |
12974 | } | |
1c8f6a4d KLC |
12975 | |
12976 | /* This is a version of bfd_generic_get_relocated_section_contents. | |
12977 | We need this variety because relaxation will modify the dwarf | |
12978 | infomation. When there is undefined symbol reference error mesage, | |
12979 | linker need to dump line number where the symbol be used. However | |
12980 | the address is be relaxed, it can not get the original dwarf contents. | |
12981 | The variety only modify function call for reading in the section. */ | |
12982 | ||
12983 | static bfd_byte * | |
12984 | nds32_elf_get_relocated_section_contents (bfd *abfd, | |
12985 | struct bfd_link_info *link_info, | |
12986 | struct bfd_link_order *link_order, | |
12987 | bfd_byte *data, | |
12988 | bfd_boolean relocatable, | |
12989 | asymbol **symbols) | |
12990 | { | |
12991 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
12992 | asection *input_section = link_order->u.indirect.section; | |
12993 | long reloc_size; | |
12994 | arelent **reloc_vector; | |
12995 | long reloc_count; | |
12996 | ||
12997 | reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
12998 | if (reloc_size < 0) | |
12999 | return NULL; | |
13000 | ||
13001 | /* Read in the section. */ | |
0c4bd9d9 | 13002 | if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE)) |
1c8f6a4d KLC |
13003 | return NULL; |
13004 | ||
13005 | if (reloc_size == 0) | |
13006 | return data; | |
13007 | ||
13008 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
13009 | if (reloc_vector == NULL) | |
13010 | return NULL; | |
13011 | ||
13012 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, | |
13013 | reloc_vector, symbols); | |
13014 | if (reloc_count < 0) | |
13015 | goto error_return; | |
13016 | ||
13017 | if (reloc_count > 0) | |
13018 | { | |
13019 | arelent **parent; | |
13020 | for (parent = reloc_vector; *parent != NULL; parent++) | |
13021 | { | |
13022 | char *error_message = NULL; | |
13023 | asymbol *symbol; | |
13024 | bfd_reloc_status_type r; | |
13025 | ||
13026 | symbol = *(*parent)->sym_ptr_ptr; | |
13027 | if (symbol->section && discarded_section (symbol->section)) | |
13028 | { | |
13029 | bfd_byte *p; | |
13030 | static reloc_howto_type none_howto | |
13031 | = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, | |
13032 | "unused", FALSE, 0, 0, FALSE); | |
13033 | ||
13034 | p = data + (*parent)->address * bfd_octets_per_byte (input_bfd); | |
13035 | _bfd_clear_contents ((*parent)->howto, input_bfd, input_section, | |
13036 | p); | |
13037 | (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
13038 | (*parent)->addend = 0; | |
13039 | (*parent)->howto = &none_howto; | |
13040 | r = bfd_reloc_ok; | |
13041 | } | |
13042 | else | |
13043 | r = bfd_perform_relocation (input_bfd, *parent, data, | |
13044 | input_section, | |
13045 | relocatable ? abfd : NULL, | |
13046 | &error_message); | |
13047 | ||
13048 | if (relocatable) | |
13049 | { | |
13050 | asection *os = input_section->output_section; | |
13051 | ||
13052 | /* A partial link, so keep the relocs. */ | |
13053 | os->orelocation[os->reloc_count] = *parent; | |
13054 | os->reloc_count++; | |
13055 | } | |
13056 | ||
13057 | if (r != bfd_reloc_ok) | |
13058 | { | |
13059 | switch (r) | |
13060 | { | |
13061 | case bfd_reloc_undefined: | |
13062 | if (!((*link_info->callbacks->undefined_symbol) | |
13063 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13064 | input_bfd, input_section, (*parent)->address, TRUE))) | |
13065 | goto error_return; | |
13066 | break; | |
13067 | case bfd_reloc_dangerous: | |
13068 | BFD_ASSERT (error_message != NULL); | |
13069 | if (!((*link_info->callbacks->reloc_dangerous) | |
13070 | (link_info, error_message, input_bfd, input_section, | |
13071 | (*parent)->address))) | |
13072 | goto error_return; | |
13073 | break; | |
13074 | case bfd_reloc_overflow: | |
13075 | if (!((*link_info->callbacks->reloc_overflow) | |
13076 | (link_info, NULL, | |
13077 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13078 | (*parent)->howto->name, (*parent)->addend, | |
13079 | input_bfd, input_section, (*parent)->address))) | |
13080 | goto error_return; | |
13081 | break; | |
13082 | case bfd_reloc_outofrange: | |
13083 | /* PR ld/13730: | |
13084 | This error can result when processing some partially | |
13085 | complete binaries. Do not abort, but issue an error | |
13086 | message instead. */ | |
13087 | link_info->callbacks->einfo | |
13088 | (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"), | |
13089 | abfd, input_section, * parent); | |
13090 | goto error_return; | |
13091 | ||
13092 | default: | |
13093 | abort (); | |
13094 | break; | |
13095 | } | |
13096 | } | |
13097 | } | |
13098 | } | |
13099 | ||
13100 | free (reloc_vector); | |
13101 | return data; | |
13102 | ||
13103 | error_return: | |
13104 | free (reloc_vector); | |
13105 | return NULL; | |
13106 | } | |
35c08157 KLC |
13107 | \f |
13108 | /* Link-time IFC relaxation. | |
13109 | In this optimization, we chains jump instructions | |
13110 | of the same destination with ifcall. */ | |
13111 | ||
13112 | ||
13113 | /* List to save jal and j relocation. */ | |
13114 | struct elf_nds32_ifc_symbol_entry | |
13115 | { | |
13116 | asection *sec; | |
13117 | struct elf_link_hash_entry *h; | |
13118 | struct elf_nds32_ifc_irel_list *irel_head; | |
13119 | unsigned long insn; | |
13120 | int times; | |
13121 | int enable; /* Apply ifc. */ | |
13122 | int ex9_enable; /* Apply ifc after ex9. */ | |
13123 | struct elf_nds32_ifc_symbol_entry *next; | |
13124 | }; | |
13125 | ||
13126 | struct elf_nds32_ifc_irel_list | |
13127 | { | |
13128 | Elf_Internal_Rela *irel; | |
13129 | asection *sec; | |
13130 | bfd_vma addr; | |
13131 | /* If this is set, then it is the last instruction for | |
13132 | ifc-chain, so it must be keep for the actual branching. */ | |
13133 | int keep; | |
13134 | struct elf_nds32_ifc_irel_list *next; | |
13135 | }; | |
13136 | ||
13137 | static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL; | |
13138 | ||
13139 | /* Insert symbol of jal and j for ifc. */ | |
13140 | ||
13141 | static void | |
13142 | nds32_elf_ifc_insert_symbol (asection *sec, | |
13143 | struct elf_link_hash_entry *h, | |
13144 | Elf_Internal_Rela *irel, | |
13145 | unsigned long insn) | |
13146 | { | |
13147 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13148 | ||
13149 | /* Check there is target of existing entry the same as the new one. */ | |
13150 | while (ptr != NULL) | |
13151 | { | |
13152 | if (((h == NULL && ptr->sec == sec | |
13153 | && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info) | |
13154 | && ptr->irel_head->irel->r_addend == irel->r_addend) | |
13155 | || h != NULL) | |
13156 | && ptr->h == h | |
13157 | && ptr->insn == insn) | |
13158 | { | |
13159 | /* The same target exist, so insert into list. */ | |
13160 | struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head; | |
13161 | ||
13162 | while (irel_list->next != NULL) | |
13163 | irel_list = irel_list->next; | |
13164 | irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); | |
13165 | irel_list = irel_list->next; | |
13166 | irel_list->irel = irel; | |
13167 | irel_list->keep = 1; | |
13168 | ||
13169 | if (h == NULL) | |
13170 | irel_list->sec = NULL; | |
13171 | else | |
13172 | irel_list->sec = sec; | |
13173 | irel_list->next = NULL; | |
13174 | return; | |
13175 | } | |
13176 | if (ptr->next == NULL) | |
13177 | break; | |
13178 | ptr = ptr->next; | |
13179 | } | |
13180 | ||
13181 | /* There is no same target entry, so build a new one. */ | |
13182 | if (ifc_symbol_head == NULL) | |
13183 | { | |
13184 | ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); | |
13185 | ptr = ifc_symbol_head; | |
13186 | } | |
13187 | else | |
13188 | { | |
13189 | ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); | |
13190 | ptr = ptr->next; | |
13191 | } | |
13192 | ||
13193 | ptr->h = h; | |
13194 | ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); | |
13195 | ptr->irel_head->irel = irel; | |
13196 | ptr->insn = insn; | |
13197 | ptr->irel_head->keep = 1; | |
13198 | ||
13199 | if (h == NULL) | |
13200 | { | |
13201 | /* Local symbols. */ | |
13202 | ptr->sec = sec; | |
13203 | ptr->irel_head->sec = NULL; | |
13204 | } | |
13205 | else | |
13206 | { | |
13207 | /* Global symbol. */ | |
13208 | ptr->sec = NULL; | |
13209 | ptr->irel_head->sec = sec; | |
13210 | } | |
13211 | ||
13212 | ptr->irel_head->next = NULL; | |
13213 | ptr->times = 0; | |
13214 | ptr->enable = 0; | |
13215 | ptr->ex9_enable = 0; | |
13216 | ptr->next = NULL; | |
13217 | } | |
13218 | ||
13219 | /* Gather all jal and j instructions. */ | |
13220 | ||
13221 | static bfd_boolean | |
13222 | nds32_elf_ifc_calc (struct bfd_link_info *info, | |
13223 | bfd *abfd, asection *sec) | |
13224 | { | |
13225 | Elf_Internal_Rela *internal_relocs; | |
13226 | Elf_Internal_Rela *irelend; | |
13227 | Elf_Internal_Rela *irel; | |
13228 | Elf_Internal_Shdr *symtab_hdr; | |
13229 | bfd_byte *contents = NULL; | |
1c8f6a4d | 13230 | uint32_t insn, insn_with_reg; |
35c08157 KLC |
13231 | unsigned long r_symndx; |
13232 | struct elf_link_hash_entry *h; | |
13233 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); | |
13234 | struct elf_nds32_link_hash_table *table; | |
13235 | bfd_boolean ifc_loop_aware; | |
13236 | ||
13237 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
13238 | TRUE /* keep_memory */); | |
13239 | irelend = internal_relocs + sec->reloc_count; | |
13240 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13241 | ||
13242 | /* Check if the object enable ifc. */ | |
13243 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, | |
13244 | R_NDS32_RELAX_ENTRY); | |
13245 | ||
13246 | if (irel == NULL | |
13247 | || irel >= irelend | |
13248 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
13249 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
13250 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG))) | |
13251 | return TRUE; | |
13252 | ||
0c4bd9d9 | 13253 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
35c08157 KLC |
13254 | return FALSE; |
13255 | ||
13256 | table = nds32_elf_hash_table (info); | |
13257 | ifc_loop_aware = table->ifc_loop_aware; | |
13258 | while (irel != NULL && irel < irelend) | |
13259 | { | |
13260 | /* Traverse all relocation and gather all of them to build the list. */ | |
13261 | ||
13262 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN) | |
13263 | { | |
13264 | if (ifc_loop_aware == 1 | |
13265 | && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0) | |
13266 | { | |
13267 | /* Check the region if loop or not. If it is true and | |
13268 | ifc-loop-aware is true, ignore the region till region end. */ | |
13269 | while (irel != NULL | |
13270 | && irel < irelend | |
13271 | && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END | |
13272 | || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)) | |
13273 | irel++; | |
13274 | } | |
13275 | } | |
13276 | ||
13277 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) | |
13278 | { | |
13279 | insn = bfd_getb32 (contents + irel->r_offset); | |
13280 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
13281 | r_symndx = ELF32_R_SYM (irel->r_info); | |
13282 | if (r_symndx < symtab_hdr->sh_info) | |
13283 | { | |
13284 | /* Local symbol. */ | |
13285 | nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg); | |
13286 | } | |
13287 | else | |
13288 | { | |
13289 | /* External symbol. */ | |
13290 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
13291 | nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg); | |
13292 | } | |
13293 | } | |
13294 | irel++; | |
13295 | } | |
13296 | return TRUE; | |
13297 | } | |
13298 | ||
13299 | /* Determine whether j and jal should be substituted. */ | |
13300 | ||
13301 | static void | |
13302 | nds32_elf_ifc_filter (struct bfd_link_info *info) | |
13303 | { | |
13304 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13305 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13306 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; | |
13307 | struct elf_nds32_link_hash_table *table; | |
13308 | int target_optimize; | |
13309 | bfd_vma address; | |
13310 | ||
13311 | table = nds32_elf_hash_table (info); | |
13312 | target_optimize = table->target_optimize; | |
13313 | while (ptr) | |
13314 | { | |
13315 | irel_ptr = ptr->irel_head; | |
13316 | if (ptr->h == NULL) | |
13317 | { | |
13318 | /* Local symbol. */ | |
13319 | irel_keeper = irel_ptr; | |
13320 | while (irel_ptr && irel_ptr->next) | |
13321 | { | |
13322 | /* Check there is jump target can be used. */ | |
13323 | if ((irel_ptr->next->irel->r_offset | |
13324 | - irel_keeper->irel->r_offset) > 1022) | |
13325 | irel_keeper = irel_ptr->next; | |
13326 | else | |
13327 | { | |
13328 | ptr->enable = 1; | |
13329 | irel_ptr->keep = 0; | |
13330 | } | |
13331 | irel_ptr = irel_ptr->next; | |
13332 | } | |
13333 | } | |
13334 | else | |
13335 | { | |
1c8f6a4d KLC |
13336 | /* Global symbol. */ |
13337 | /* We have to get the absolute address and decide | |
13338 | whether to keep it or not. */ | |
35c08157 KLC |
13339 | while (irel_ptr) |
13340 | { | |
13341 | address = (irel_ptr->irel->r_offset | |
13342 | + irel_ptr->sec->output_section->vma | |
13343 | + irel_ptr->sec->output_offset); | |
13344 | irel_ptr->addr = address; | |
13345 | irel_ptr = irel_ptr->next; | |
13346 | } | |
13347 | ||
13348 | irel_ptr = ptr->irel_head; | |
13349 | while (irel_ptr) | |
13350 | { | |
1c8f6a4d | 13351 | /* Sort by address. */ |
35c08157 KLC |
13352 | struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr; |
13353 | struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr; | |
13354 | struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL; | |
13355 | struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL; | |
13356 | ||
1c8f6a4d | 13357 | /* Get the smallest one. */ |
35c08157 KLC |
13358 | while (irel_temp->next) |
13359 | { | |
13360 | if (irel_temp->next->addr < irel_dest->addr) | |
13361 | { | |
13362 | irel_dest_prev = irel_temp; | |
13363 | irel_dest = irel_temp->next; | |
13364 | } | |
13365 | irel_temp = irel_temp->next; | |
13366 | } | |
1c8f6a4d | 13367 | |
35c08157 KLC |
13368 | if (irel_dest != irel_ptr) |
13369 | { | |
13370 | if (irel_ptr_prev) | |
13371 | irel_ptr_prev->next = irel_dest; | |
13372 | if (irel_dest_prev) | |
13373 | irel_dest_prev->next = irel_ptr; | |
13374 | irel_temp = irel_ptr->next; | |
13375 | irel_ptr->next = irel_dest->next; | |
13376 | irel_dest->next = irel_temp; | |
13377 | } | |
13378 | irel_ptr_prev = irel_ptr; | |
13379 | irel_ptr = irel_ptr->next; | |
13380 | } | |
13381 | ||
13382 | irel_ptr = ptr->irel_head; | |
13383 | irel_keeper = irel_ptr; | |
13384 | while (irel_ptr && irel_ptr->next) | |
13385 | { | |
13386 | if ((irel_ptr->next->addr - irel_keeper->addr) > 1022) | |
13387 | irel_keeper = irel_ptr->next; | |
13388 | else | |
13389 | { | |
13390 | ptr->enable = 1; | |
13391 | irel_ptr->keep = 0; | |
13392 | } | |
13393 | irel_ptr = irel_ptr->next; | |
13394 | } | |
13395 | } | |
13396 | ||
1c8f6a4d | 13397 | /* Ex9 enable. Reserve it for ex9. */ |
35c08157 KLC |
13398 | if ((target_optimize & NDS32_RELAX_EX9_ON) |
13399 | && ptr->irel_head != irel_keeper) | |
13400 | ptr->enable = 0; | |
13401 | ptr = ptr->next; | |
13402 | } | |
13403 | } | |
13404 | ||
13405 | /* Determine whether j and jal should be substituted after ex9 done. */ | |
13406 | ||
13407 | static void | |
13408 | nds32_elf_ifc_filter_after_ex9 (void) | |
13409 | { | |
13410 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13411 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13412 | ||
13413 | while (ptr) | |
13414 | { | |
13415 | if (ptr->enable == 0) | |
13416 | { | |
13417 | /* Check whether ifc is applied or not. */ | |
13418 | irel_ptr = ptr->irel_head; | |
13419 | ptr->ex9_enable = 1; | |
13420 | while (irel_ptr) | |
13421 | { | |
13422 | if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN) | |
13423 | { | |
13424 | /* Ex9 already. */ | |
13425 | ptr->ex9_enable = 0; | |
13426 | break; | |
13427 | } | |
13428 | irel_ptr = irel_ptr->next; | |
13429 | } | |
13430 | } | |
13431 | ptr = ptr->next; | |
13432 | } | |
13433 | } | |
13434 | ||
13435 | /* Wrapper to do ifc relaxation. */ | |
13436 | ||
13437 | bfd_boolean | |
13438 | nds32_elf_ifc_finish (struct bfd_link_info *info) | |
13439 | { | |
13440 | int relax_status; | |
13441 | struct elf_nds32_link_hash_table *table; | |
13442 | ||
13443 | table = nds32_elf_hash_table (info); | |
13444 | relax_status = table->relax_status; | |
13445 | ||
13446 | if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE)) | |
13447 | nds32_elf_ifc_filter (info); | |
13448 | else | |
13449 | nds32_elf_ifc_filter_after_ex9 (); | |
13450 | ||
13451 | if (!nds32_elf_ifc_replace (info)) | |
13452 | return FALSE; | |
13453 | ||
13454 | if (table) | |
13455 | table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE; | |
13456 | return TRUE; | |
13457 | } | |
13458 | ||
13459 | /* Traverse the result of ifc filter and replace it with ifcall9. */ | |
13460 | ||
13461 | static bfd_boolean | |
13462 | nds32_elf_ifc_replace (struct bfd_link_info *info) | |
13463 | { | |
13464 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13465 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13466 | nds32_elf_blank_t *relax_blank_list = NULL; | |
13467 | bfd_byte *contents = NULL; | |
13468 | Elf_Internal_Rela *internal_relocs; | |
13469 | Elf_Internal_Rela *irel; | |
13470 | Elf_Internal_Rela *irelend; | |
13471 | unsigned short insn16 = INSN_IFCALL9; | |
13472 | struct elf_nds32_link_hash_table *table; | |
13473 | int relax_status; | |
13474 | ||
13475 | table = nds32_elf_hash_table (info); | |
13476 | relax_status = table->relax_status; | |
13477 | ||
13478 | while (ptr) | |
13479 | { | |
13480 | /* Traverse the ifc gather list, and replace the | |
13481 | filter entries by ifcall9. */ | |
13482 | if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1) | |
1c8f6a4d KLC |
13483 | || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE) |
13484 | && ptr->ex9_enable == 1)) | |
35c08157 KLC |
13485 | { |
13486 | irel_ptr = ptr->irel_head; | |
13487 | if (ptr->h == NULL) | |
13488 | { | |
13489 | /* Local symbol. */ | |
13490 | internal_relocs = _bfd_elf_link_read_relocs | |
13491 | (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */); | |
13492 | irelend = internal_relocs + ptr->sec->reloc_count; | |
13493 | ||
1c8f6a4d | 13494 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, |
0c4bd9d9 | 13495 | &contents, TRUE)) |
35c08157 KLC |
13496 | return FALSE; |
13497 | ||
13498 | while (irel_ptr) | |
13499 | { | |
13500 | if (irel_ptr->keep == 0 && irel_ptr->next) | |
13501 | { | |
1c8f6a4d | 13502 | /* The one can be replaced. We have to check whether |
35c08157 KLC |
13503 | there is any alignment point in the region. */ |
13504 | irel = irel_ptr->irel; | |
1c8f6a4d KLC |
13505 | while (((irel_ptr->next->keep == 0 |
13506 | && irel < irel_ptr->next->irel) | |
35c08157 KLC |
13507 | || (irel_ptr->next->keep == 1 && irel < irelend)) |
13508 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13509 | && (irel->r_addend & 0x1f) == 2)) | |
13510 | irel++; | |
13511 | if (irel >= irelend | |
13512 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13513 | && (irel->r_addend & 0x1f) == 2 | |
1c8f6a4d KLC |
13514 | && ((irel->r_offset - get_nds32_elf_blank_total |
13515 | (&relax_blank_list, irel->r_offset, 1)) | |
13516 | & 0x02) == 0)) | |
35c08157 KLC |
13517 | { |
13518 | /* Replace by ifcall9. */ | |
13519 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13520 | if (!insert_nds32_elf_blank_recalc_total | |
13521 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) | |
13522 | return FALSE; | |
13523 | irel_ptr->irel->r_info = | |
1c8f6a4d KLC |
13524 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
13525 | R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
13526 | } |
13527 | } | |
13528 | irel_ptr = irel_ptr->next; | |
13529 | } | |
13530 | ||
13531 | /* Delete the redundant code. */ | |
13532 | if (relax_blank_list) | |
13533 | { | |
13534 | nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec, | |
13535 | relax_blank_list); | |
13536 | relax_blank_list = NULL; | |
13537 | } | |
13538 | } | |
13539 | else | |
13540 | { | |
13541 | /* Global symbol. */ | |
13542 | while (irel_ptr) | |
13543 | { | |
13544 | if (irel_ptr->keep == 0 && irel_ptr->next) | |
13545 | { | |
13546 | /* The one can be replaced, and we have to check | |
13547 | whether there is any alignment point in the region. */ | |
13548 | internal_relocs = _bfd_elf_link_read_relocs | |
13549 | (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL, | |
13550 | TRUE /* keep_memory */); | |
13551 | irelend = internal_relocs + irel_ptr->sec->reloc_count; | |
0c4bd9d9 KLC |
13552 | if (!nds32_get_section_contents (irel_ptr->sec->owner, |
13553 | irel_ptr->sec, &contents, | |
13554 | TRUE)) | |
35c08157 KLC |
13555 | return FALSE; |
13556 | ||
13557 | irel = irel_ptr->irel; | |
13558 | while (((irel_ptr->sec == irel_ptr->next->sec | |
13559 | && irel_ptr->next->keep == 0 | |
13560 | && irel < irel_ptr->next->irel) | |
13561 | || ((irel_ptr->sec != irel_ptr->next->sec | |
13562 | || irel_ptr->next->keep == 1) | |
13563 | && irel < irelend)) | |
13564 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13565 | && (irel->r_addend & 0x1f) == 2)) | |
13566 | irel++; | |
13567 | if (irel >= irelend | |
13568 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13569 | && (irel->r_addend & 0x1f) == 2 | |
13570 | && ((irel->r_offset | |
13571 | - get_nds32_elf_blank_total (&relax_blank_list, | |
13572 | irel->r_offset, 1)) & 0x02) == 0)) | |
13573 | { | |
13574 | /* Replace by ifcall9. */ | |
13575 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13576 | if (!insert_nds32_elf_blank_recalc_total | |
13577 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) | |
13578 | return FALSE; | |
13579 | ||
13580 | /* Delete the redundant code, and clear the relocation. */ | |
13581 | nds32_elf_relax_delete_blanks (irel_ptr->sec->owner, | |
13582 | irel_ptr->sec, | |
13583 | relax_blank_list); | |
13584 | irel_ptr->irel->r_info = | |
1c8f6a4d KLC |
13585 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
13586 | R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
13587 | relax_blank_list = NULL; |
13588 | } | |
13589 | } | |
13590 | ||
13591 | irel_ptr = irel_ptr->next; | |
13592 | } | |
13593 | } | |
13594 | } | |
13595 | ptr = ptr->next; | |
13596 | } | |
13597 | ||
13598 | return TRUE; | |
13599 | } | |
13600 | ||
13601 | /* Relocate ifcall. */ | |
13602 | ||
1c8f6a4d | 13603 | static bfd_boolean |
35c08157 KLC |
13604 | nds32_elf_ifc_reloc (void) |
13605 | { | |
13606 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13607 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13608 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; | |
13609 | bfd_vma relocation, address; | |
13610 | unsigned short insn16; | |
35c08157 | 13611 | bfd_byte *contents = NULL; |
1c8f6a4d KLC |
13612 | static bfd_boolean done = FALSE; |
13613 | ||
13614 | if (done) | |
13615 | return TRUE; | |
13616 | ||
13617 | done = TRUE; | |
35c08157 KLC |
13618 | |
13619 | while (ptr) | |
13620 | { | |
1c8f6a4d | 13621 | /* Check the entry is enable ifcall. */ |
35c08157 KLC |
13622 | if (ptr->enable == 1 || ptr->ex9_enable == 1) |
13623 | { | |
1c8f6a4d | 13624 | /* Get the reserve jump. */ |
35c08157 KLC |
13625 | irel_ptr = ptr->irel_head; |
13626 | while (irel_ptr) | |
13627 | { | |
13628 | if (irel_ptr->keep == 1) | |
13629 | { | |
13630 | irel_keeper = irel_ptr; | |
13631 | break; | |
13632 | } | |
13633 | irel_ptr = irel_ptr->next; | |
13634 | } | |
13635 | ||
13636 | irel_ptr = ptr->irel_head; | |
13637 | if (ptr->h == NULL) | |
13638 | { | |
13639 | /* Local symbol. */ | |
0c4bd9d9 KLC |
13640 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, |
13641 | &contents, TRUE)) | |
35c08157 KLC |
13642 | return FALSE; |
13643 | ||
13644 | while (irel_ptr) | |
13645 | { | |
13646 | if (irel_ptr->keep == 0 | |
1c8f6a4d | 13647 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
35c08157 KLC |
13648 | { |
13649 | relocation = irel_keeper->irel->r_offset; | |
13650 | relocation = relocation - irel_ptr->irel->r_offset; | |
13651 | while (irel_keeper && relocation > 1022) | |
13652 | { | |
13653 | irel_keeper = irel_keeper->next; | |
13654 | if (irel_keeper && irel_keeper->keep == 1) | |
13655 | { | |
13656 | relocation = irel_keeper->irel->r_offset; | |
13657 | relocation = relocation - irel_ptr->irel->r_offset; | |
13658 | } | |
13659 | } | |
13660 | if (relocation > 1022) | |
13661 | { | |
13662 | /* Double check. */ | |
13663 | irel_keeper = ptr->irel_head; | |
13664 | while (irel_keeper) | |
13665 | { | |
13666 | if (irel_keeper->keep == 1) | |
13667 | { | |
13668 | relocation = irel_keeper->irel->r_offset; | |
13669 | relocation = relocation - irel_ptr->irel->r_offset; | |
13670 | } | |
13671 | if (relocation <= 1022) | |
13672 | break; | |
13673 | irel_keeper = irel_keeper->next; | |
13674 | } | |
13675 | if (!irel_keeper) | |
13676 | return FALSE; | |
13677 | } | |
1c8f6a4d KLC |
13678 | irel_ptr->irel->r_info = |
13679 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), | |
13680 | R_NDS32_NONE); | |
35c08157 KLC |
13681 | insn16 = INSN_IFCALL9 | (relocation >> 1); |
13682 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13683 | } | |
13684 | irel_ptr = irel_ptr->next; | |
13685 | } | |
13686 | } | |
13687 | else | |
13688 | { | |
13689 | /* Global symbol. */ | |
13690 | while (irel_ptr) | |
13691 | { | |
13692 | if (irel_ptr->keep == 0 | |
1c8f6a4d | 13693 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
35c08157 | 13694 | { |
1c8f6a4d | 13695 | /* Get the distance between ifcall and jump. */ |
35c08157 KLC |
13696 | relocation = (irel_keeper->irel->r_offset |
13697 | + irel_keeper->sec->output_section->vma | |
13698 | + irel_keeper->sec->output_offset); | |
13699 | address = (irel_ptr->irel->r_offset | |
13700 | + irel_ptr->sec->output_section->vma | |
13701 | + irel_ptr->sec->output_offset); | |
13702 | relocation = relocation - address; | |
1c8f6a4d KLC |
13703 | |
13704 | /* The distance is over ragne, find callee again. */ | |
35c08157 KLC |
13705 | while (irel_keeper && relocation > 1022) |
13706 | { | |
13707 | irel_keeper = irel_keeper->next; | |
13708 | if (irel_keeper && irel_keeper->keep ==1) | |
13709 | { | |
13710 | relocation = (irel_keeper->irel->r_offset | |
13711 | + irel_keeper->sec->output_section->vma | |
13712 | + irel_keeper->sec->output_offset); | |
13713 | relocation = relocation - address; | |
13714 | } | |
13715 | } | |
13716 | ||
13717 | if (relocation > 1022) | |
13718 | { | |
13719 | /* Double check. */ | |
13720 | irel_keeper = ptr->irel_head; | |
13721 | while (irel_keeper) | |
13722 | { | |
13723 | if (irel_keeper->keep == 1) | |
13724 | { | |
13725 | ||
13726 | relocation = (irel_keeper->irel->r_offset | |
13727 | + irel_keeper->sec->output_section->vma | |
13728 | + irel_keeper->sec->output_offset); | |
13729 | relocation = relocation - address; | |
13730 | } | |
13731 | if (relocation <= 1022) | |
13732 | break; | |
13733 | irel_keeper = irel_keeper->next; | |
13734 | } | |
13735 | if (!irel_keeper) | |
13736 | return FALSE; | |
13737 | } | |
13738 | if (!nds32_get_section_contents | |
0c4bd9d9 | 13739 | (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE)) |
1c8f6a4d KLC |
13740 | return FALSE; |
13741 | insn16 = INSN_IFCALL9 | (relocation >> 1); | |
13742 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13743 | irel_ptr->irel->r_info = | |
13744 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), | |
13745 | R_NDS32_NONE); | |
35c08157 KLC |
13746 | } |
13747 | irel_ptr =irel_ptr->next; | |
13748 | } | |
13749 | } | |
13750 | } | |
13751 | ptr = ptr->next; | |
13752 | } | |
13753 | ||
13754 | return TRUE; | |
13755 | } | |
13756 | ||
13757 | /* End of IFC relaxation. */ | |
13758 | \f | |
13759 | /* EX9 Instruction Table Relaxation. */ | |
13760 | ||
13761 | /* Global hash list. */ | |
13762 | struct elf_link_hash_entry_list | |
13763 | { | |
13764 | struct elf_link_hash_entry *h; | |
13765 | struct elf_link_hash_entry_list *next; | |
13766 | }; | |
13767 | ||
13768 | /* Save different destination but same insn. */ | |
13769 | struct elf_link_hash_entry_mul_list | |
13770 | { | |
13771 | /* Global symbol times. */ | |
13772 | int times; | |
13773 | /* Save relocation for each global symbol but useful?? */ | |
13774 | Elf_Internal_Rela *irel; | |
13775 | /* For sethi, two sethi may have the same high-part but different low-parts. */ | |
13776 | Elf_Internal_Rela rel_backup; | |
13777 | struct elf_link_hash_entry_list *h_list; | |
13778 | struct elf_link_hash_entry_mul_list *next; | |
13779 | }; | |
13780 | ||
13781 | /* Instruction hash table. */ | |
13782 | struct elf_nds32_code_hash_entry | |
13783 | { | |
13784 | struct bfd_hash_entry root; | |
13785 | int times; | |
13786 | /* For insn that can use relocation or constant ex: sethi. */ | |
13787 | int const_insn; | |
13788 | asection *sec; | |
13789 | struct elf_link_hash_entry_mul_list *m_list; | |
13790 | /* Using r_addend. */ | |
13791 | Elf_Internal_Rela *irel; | |
13792 | /* Using r_info. */ | |
13793 | Elf_Internal_Rela rel_backup; | |
13794 | }; | |
13795 | ||
13796 | /* Instruction count list. */ | |
13797 | struct elf_nds32_insn_times_entry | |
13798 | { | |
13799 | const char *string; | |
13800 | int times; | |
13801 | int order; | |
13802 | asection *sec; | |
13803 | struct elf_link_hash_entry_mul_list *m_list; | |
13804 | Elf_Internal_Rela *irel; | |
13805 | Elf_Internal_Rela rel_backup; | |
13806 | struct elf_nds32_insn_times_entry *next; | |
13807 | }; | |
13808 | ||
13809 | /* J and JAL symbol list. */ | |
13810 | struct elf_nds32_symbol_entry | |
13811 | { | |
13812 | char *string; | |
13813 | unsigned long insn; | |
13814 | struct elf_nds32_symbol_entry *next; | |
13815 | }; | |
13816 | ||
13817 | /* Relocation list. */ | |
13818 | struct elf_nds32_irel_entry | |
13819 | { | |
13820 | Elf_Internal_Rela *irel; | |
13821 | struct elf_nds32_irel_entry *next; | |
13822 | }; | |
13823 | ||
13824 | /* ex9.it insn need to be fixed. */ | |
13825 | struct elf_nds32_ex9_refix | |
13826 | { | |
13827 | Elf_Internal_Rela *irel; | |
13828 | asection *sec; | |
13829 | struct elf_link_hash_entry *h; | |
13830 | int order; | |
13831 | struct elf_nds32_ex9_refix *next; | |
13832 | }; | |
13833 | ||
13834 | static struct bfd_hash_table ex9_code_table; | |
13835 | static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL; | |
13836 | static struct elf_nds32_ex9_refix *ex9_refix_head = NULL; | |
13837 | ||
13838 | /* EX9 hash function. */ | |
13839 | ||
13840 | static struct bfd_hash_entry * | |
13841 | nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry, | |
13842 | struct bfd_hash_table *table, | |
13843 | const char *string) | |
13844 | { | |
13845 | struct elf_nds32_code_hash_entry *ret; | |
13846 | ||
13847 | /* Allocate the structure if it has not already been allocated by a | |
13848 | subclass. */ | |
13849 | if (entry == NULL) | |
13850 | { | |
13851 | entry = (struct bfd_hash_entry *) | |
13852 | bfd_hash_allocate (table, sizeof (*ret)); | |
13853 | if (entry == NULL) | |
13854 | return entry; | |
13855 | } | |
13856 | ||
13857 | /* Call the allocation method of the superclass. */ | |
13858 | entry = bfd_hash_newfunc (entry, table, string); | |
13859 | if (entry == NULL) | |
13860 | return entry; | |
13861 | ||
13862 | ret = (struct elf_nds32_code_hash_entry*) entry; | |
13863 | ret->times = 0; | |
13864 | ret->const_insn = 0; | |
13865 | ret->m_list = NULL; | |
13866 | ret->sec = NULL; | |
13867 | ret->irel = NULL; | |
13868 | return &ret->root; | |
13869 | } | |
13870 | ||
13871 | /* Insert ex9 entry | |
13872 | this insert must be stable sorted by times. */ | |
13873 | ||
13874 | static void | |
13875 | nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr) | |
13876 | { | |
13877 | struct elf_nds32_insn_times_entry *temp; | |
13878 | struct elf_nds32_insn_times_entry *temp2; | |
13879 | ||
13880 | if (ex9_insn_head == NULL) | |
13881 | { | |
13882 | ex9_insn_head = ptr; | |
13883 | ptr->next = NULL; | |
13884 | } | |
13885 | else | |
13886 | { | |
13887 | temp = ex9_insn_head; | |
13888 | temp2 = ex9_insn_head; | |
13889 | while (temp->next && | |
13890 | (temp->next->times >= ptr->times | |
13891 | || temp->times == -1)) | |
13892 | { | |
13893 | if (temp->times == -1) | |
13894 | temp2 = temp; | |
13895 | temp = temp->next; | |
13896 | } | |
13897 | if (ptr->times > temp->times && temp->times != -1) | |
13898 | { | |
13899 | ptr->next = temp; | |
13900 | if (temp2->times == -1) | |
13901 | temp2->next = ptr; | |
13902 | else | |
13903 | ex9_insn_head = ptr; | |
13904 | } | |
13905 | else if (temp->next == NULL) | |
13906 | { | |
13907 | temp->next = ptr; | |
13908 | ptr->next = NULL; | |
13909 | } | |
13910 | else | |
13911 | { | |
13912 | ptr->next = temp->next; | |
13913 | temp->next = ptr; | |
13914 | } | |
13915 | } | |
13916 | } | |
13917 | ||
13918 | /* Examine each insn times in hash table. | |
13919 | Handle multi-link hash entry. | |
13920 | ||
13921 | TODO: This function doesn't assign so much info since it is fake. */ | |
13922 | ||
13923 | static int | |
13924 | nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h) | |
13925 | { | |
13926 | struct elf_nds32_insn_times_entry *ptr; | |
13927 | int times; | |
13928 | ||
13929 | if (h->m_list == NULL) | |
13930 | { | |
13931 | /* Local symbol insn or insn without relocation. */ | |
13932 | if (h->times < 3) | |
13933 | return TRUE; | |
13934 | ||
13935 | ptr = (struct elf_nds32_insn_times_entry *) | |
13936 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13937 | ptr->times = h->times; | |
13938 | ptr->string = h->root.string; | |
13939 | ptr->m_list = NULL; | |
13940 | ptr->sec = h->sec; | |
13941 | ptr->irel = h->irel; | |
13942 | ptr->rel_backup = h->rel_backup; | |
13943 | nds32_elf_ex9_insert_entry (ptr); | |
13944 | } | |
13945 | else | |
13946 | { | |
13947 | /* Global symbol insn. */ | |
13948 | /* Only sethi insn has multiple m_list. */ | |
13949 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; | |
13950 | ||
13951 | times = 0; | |
13952 | while (m_list) | |
13953 | { | |
13954 | times += m_list->times; | |
13955 | m_list = m_list->next; | |
13956 | } | |
13957 | if (times >= 3) | |
13958 | { | |
13959 | m_list = h->m_list; | |
13960 | ptr = (struct elf_nds32_insn_times_entry *) | |
13961 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13962 | ptr->times = times; /* Use the total times. */ | |
13963 | ptr->string = h->root.string; | |
13964 | ptr->m_list = m_list; | |
13965 | ptr->sec = h->sec; | |
13966 | ptr->irel = m_list->irel; | |
13967 | ptr->rel_backup = m_list->rel_backup; | |
13968 | nds32_elf_ex9_insert_entry (ptr); | |
13969 | } | |
13970 | if (h->const_insn == 1) | |
13971 | { | |
13972 | /* sethi with constant value. */ | |
13973 | if (h->times < 3) | |
13974 | return TRUE; | |
13975 | ||
13976 | ptr = (struct elf_nds32_insn_times_entry *) | |
13977 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13978 | ptr->times = h->times; | |
13979 | ptr->string = h->root.string; | |
13980 | ptr->m_list = NULL; | |
13981 | ptr->sec = NULL; | |
13982 | ptr->irel = NULL; | |
13983 | ptr->rel_backup = h->rel_backup; | |
13984 | nds32_elf_ex9_insert_entry (ptr); | |
13985 | } | |
13986 | } | |
13987 | return TRUE; | |
13988 | } | |
13989 | ||
13990 | /* Count each insn times in hash table. | |
13991 | Handle multi-link hash entry. */ | |
13992 | ||
13993 | static int | |
13994 | nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h) | |
13995 | { | |
13996 | int reservation, times; | |
13997 | unsigned long relocation, min_relocation; | |
13998 | struct elf_nds32_insn_times_entry *ptr; | |
13999 | ||
14000 | if (h->m_list == NULL) | |
14001 | { | |
14002 | /* Local symbol insn or insn without relocation. */ | |
14003 | if (h->times < 3) | |
14004 | return TRUE; | |
14005 | ptr = (struct elf_nds32_insn_times_entry *) | |
14006 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14007 | ptr->times = h->times; | |
14008 | ptr->string = h->root.string; | |
14009 | ptr->m_list = NULL; | |
14010 | ptr->sec = h->sec; | |
14011 | ptr->irel = h->irel; | |
14012 | ptr->rel_backup = h->rel_backup; | |
14013 | nds32_elf_ex9_insert_entry (ptr); | |
14014 | } | |
14015 | else | |
14016 | { | |
14017 | /* Global symbol insn. */ | |
14018 | /* Only sethi insn has multiple m_list. */ | |
14019 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; | |
14020 | ||
14021 | if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA | |
14022 | && m_list->next != NULL) | |
14023 | { | |
14024 | /* Sethi insn has different symbol or addend but has same hi20. */ | |
14025 | times = 0; | |
14026 | reservation = 1; | |
14027 | relocation = 0; | |
14028 | min_relocation = 0xffffffff; | |
14029 | while (m_list) | |
14030 | { | |
14031 | /* Get the minimum sethi address | |
14032 | and calculate how many entry the sethi-list have to use. */ | |
14033 | if ((m_list->h_list->h->root.type == bfd_link_hash_defined | |
14034 | || m_list->h_list->h->root.type == bfd_link_hash_defweak) | |
14035 | && (m_list->h_list->h->root.u.def.section != NULL | |
14036 | && m_list->h_list->h->root.u.def.section->output_section != NULL)) | |
14037 | { | |
14038 | relocation = (m_list->h_list->h->root.u.def.value + | |
14039 | m_list->h_list->h->root.u.def.section->output_section->vma + | |
14040 | m_list->h_list->h->root.u.def.section->output_offset); | |
14041 | relocation += m_list->irel->r_addend; | |
14042 | } | |
14043 | else | |
14044 | relocation = 0; | |
14045 | if (relocation < min_relocation) | |
14046 | min_relocation = relocation; | |
14047 | times += m_list->times; | |
14048 | m_list = m_list->next; | |
14049 | } | |
14050 | if (min_relocation < ex9_relax_size) | |
14051 | reservation = (min_relocation >> 12) + 1; | |
14052 | else | |
14053 | reservation = (min_relocation >> 12) | |
14054 | - ((min_relocation - ex9_relax_size) >> 12) + 1; | |
14055 | if (reservation < (times / 3)) | |
14056 | { | |
14057 | /* Efficient enough to use ex9. */ | |
14058 | int i; | |
14059 | ||
14060 | for (i = reservation ; i > 0; i--) | |
14061 | { | |
14062 | /* Allocate number of reservation ex9 entry. */ | |
14063 | ptr = (struct elf_nds32_insn_times_entry *) | |
14064 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14065 | ptr->times = h->m_list->times / reservation; | |
14066 | ptr->string = h->root.string; | |
14067 | ptr->m_list = h->m_list; | |
14068 | ptr->sec = h->sec; | |
14069 | ptr->irel = h->m_list->irel; | |
14070 | ptr->rel_backup = h->m_list->rel_backup; | |
14071 | nds32_elf_ex9_insert_entry (ptr); | |
14072 | } | |
14073 | } | |
14074 | } | |
14075 | else | |
14076 | { | |
14077 | /* Normal global symbol that means no different address symbol | |
14078 | using same ex9 entry. */ | |
14079 | if (m_list->times >= 3) | |
14080 | { | |
14081 | ptr = (struct elf_nds32_insn_times_entry *) | |
14082 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14083 | ptr->times = m_list->times; | |
14084 | ptr->string = h->root.string; | |
14085 | ptr->m_list = h->m_list; | |
14086 | ptr->sec = h->sec; | |
14087 | ptr->irel = h->m_list->irel; | |
14088 | ptr->rel_backup = h->m_list->rel_backup; | |
14089 | nds32_elf_ex9_insert_entry (ptr); | |
14090 | } | |
14091 | } | |
14092 | ||
14093 | if (h->const_insn == 1) | |
14094 | { | |
14095 | /* sethi with constant value. */ | |
14096 | if (h->times < 3) | |
14097 | return TRUE; | |
14098 | ||
14099 | ptr = (struct elf_nds32_insn_times_entry *) | |
14100 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14101 | ptr->times = h->times; | |
14102 | ptr->string = h->root.string; | |
14103 | ptr->m_list = NULL; | |
14104 | ptr->sec = NULL; | |
14105 | ptr->irel = NULL; | |
14106 | ptr->rel_backup = h->rel_backup; | |
14107 | nds32_elf_ex9_insert_entry (ptr); | |
14108 | } | |
14109 | } | |
14110 | ||
14111 | return TRUE; | |
14112 | } | |
14113 | ||
14114 | /* Hash table traverse function. */ | |
14115 | ||
14116 | static void | |
14117 | nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*)) | |
14118 | { | |
14119 | unsigned int i; | |
14120 | ||
14121 | ex9_code_table.frozen = 1; | |
14122 | for (i = 0; i < ex9_code_table.size; i++) | |
14123 | { | |
14124 | struct bfd_hash_entry *p; | |
14125 | ||
14126 | for (p = ex9_code_table.table[i]; p != NULL; p = p->next) | |
14127 | if (!func ((struct elf_nds32_code_hash_entry *) p)) | |
14128 | goto out; | |
14129 | } | |
14130 | out: | |
14131 | ex9_code_table.frozen = 0; | |
14132 | } | |
14133 | ||
14134 | ||
14135 | /* Give order number to insn list. */ | |
14136 | ||
14137 | static void | |
14138 | nds32_elf_order_insn_times (struct bfd_link_info *info) | |
14139 | { | |
14140 | struct elf_nds32_insn_times_entry *ex9_insn; | |
1c8f6a4d | 14141 | struct elf_nds32_insn_times_entry *temp = NULL; |
35c08157 | 14142 | struct elf_nds32_link_hash_table *table; |
35c08157 | 14143 | int ex9_limit; |
1c8f6a4d KLC |
14144 | int number = 0; |
14145 | ||
14146 | if (ex9_insn_head == NULL) | |
14147 | return; | |
35c08157 KLC |
14148 | |
14149 | /* The max number of entries is 512. */ | |
14150 | ex9_insn = ex9_insn_head; | |
14151 | table = nds32_elf_hash_table (info); | |
14152 | ex9_limit = table->ex9_limit; | |
14153 | ||
35c08157 KLC |
14154 | ex9_insn = ex9_insn_head; |
14155 | ||
1c8f6a4d | 14156 | while (ex9_insn != NULL && number < ex9_limit) |
35c08157 | 14157 | { |
1c8f6a4d | 14158 | ex9_insn->order = number; |
35c08157 | 14159 | number++; |
1c8f6a4d | 14160 | temp = ex9_insn; |
35c08157 KLC |
14161 | ex9_insn = ex9_insn->next; |
14162 | } | |
14163 | ||
1c8f6a4d KLC |
14164 | if (ex9_insn && temp) |
14165 | temp->next = NULL; | |
35c08157 KLC |
14166 | |
14167 | while (ex9_insn != NULL) | |
14168 | { | |
14169 | /* Free useless entry. */ | |
14170 | temp = ex9_insn; | |
14171 | ex9_insn = ex9_insn->next; | |
14172 | free (temp); | |
14173 | } | |
14174 | } | |
14175 | ||
14176 | /* Build .ex9.itable section. */ | |
14177 | ||
14178 | static void | |
14179 | nds32_elf_ex9_build_itable (struct bfd_link_info *link_info) | |
14180 | { | |
14181 | asection *table_sec; | |
14182 | struct elf_nds32_insn_times_entry *ptr; | |
14183 | bfd *it_abfd; | |
14184 | int number = 0; | |
14185 | bfd_byte *contents = NULL; | |
14186 | ||
14187 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; | |
c72f2fb2 | 14188 | it_abfd = it_abfd->link.next) |
35c08157 KLC |
14189 | { |
14190 | /* Find the section .ex9.itable, and put all entries into it. */ | |
14191 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); | |
14192 | if (table_sec != NULL) | |
14193 | { | |
0c4bd9d9 | 14194 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) |
35c08157 KLC |
14195 | return; |
14196 | ||
14197 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) | |
14198 | number++; | |
14199 | ||
14200 | table_sec->size = number * 4; | |
14201 | ||
14202 | if (number == 0) | |
1c8f6a4d | 14203 | return; |
35c08157 KLC |
14204 | |
14205 | elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST; | |
14206 | number = 0; | |
14207 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) | |
14208 | { | |
14209 | long val; | |
14210 | ||
14211 | val = strtol (ptr->string, NULL, 16); | |
14212 | bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4)); | |
14213 | number++; | |
14214 | } | |
14215 | break; | |
14216 | } | |
14217 | } | |
14218 | } | |
14219 | ||
14220 | /* Get insn with regs according to relocation type. */ | |
14221 | ||
14222 | static void | |
14223 | nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel, | |
1c8f6a4d | 14224 | uint32_t insn, uint32_t *insn_with_reg) |
35c08157 KLC |
14225 | { |
14226 | reloc_howto_type *howto = NULL; | |
14227 | ||
14228 | if (irel == NULL | |
14229 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) | |
14230 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) | |
14231 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) | |
14232 | { | |
14233 | *insn_with_reg = insn; | |
14234 | return; | |
14235 | } | |
14236 | ||
14237 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
14238 | *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask); | |
14239 | } | |
14240 | ||
14241 | /* Mask number of address bits according to relocation. */ | |
14242 | ||
14243 | static unsigned long | |
14244 | nds32_elf_irel_mask (Elf_Internal_Rela *irel) | |
14245 | { | |
14246 | reloc_howto_type *howto = NULL; | |
14247 | ||
14248 | if (irel == NULL | |
14249 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) | |
14250 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) | |
14251 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) | |
14252 | return 0; | |
14253 | ||
14254 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
14255 | return howto->dst_mask; | |
14256 | } | |
14257 | ||
14258 | static void | |
14259 | nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list, | |
14260 | struct elf_nds32_irel_entry *irel_ptr) | |
14261 | { | |
14262 | if (*irel_list == NULL) | |
14263 | { | |
14264 | *irel_list = irel_ptr; | |
14265 | irel_ptr->next = NULL; | |
14266 | } | |
14267 | else | |
14268 | { | |
14269 | irel_ptr->next = *irel_list; | |
14270 | *irel_list = irel_ptr; | |
14271 | } | |
14272 | } | |
14273 | ||
14274 | static void | |
14275 | nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel, | |
14276 | struct elf_link_hash_entry *h, int order) | |
14277 | { | |
14278 | struct elf_nds32_ex9_refix *ptr; | |
14279 | ||
14280 | ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix)); | |
14281 | ptr->sec = sec; | |
14282 | ptr->irel = irel; | |
14283 | ptr->h = h; | |
14284 | ptr->order = order; | |
14285 | ptr->next = NULL; | |
14286 | ||
14287 | if (ex9_refix_head == NULL) | |
14288 | ex9_refix_head = ptr; | |
14289 | else | |
14290 | { | |
14291 | struct elf_nds32_ex9_refix *temp = ex9_refix_head; | |
14292 | ||
14293 | while (temp->next != NULL) | |
14294 | temp = temp->next; | |
14295 | temp->next = ptr; | |
14296 | } | |
14297 | } | |
14298 | ||
14299 | enum | |
14300 | { | |
14301 | DATA_EXIST = 1, | |
14302 | CLEAN_PRE = 1 << 1, | |
14303 | PUSH_PRE = 1 << 2 | |
14304 | }; | |
14305 | ||
14306 | /* Check relocation type if supporting for ex9. */ | |
14307 | ||
14308 | static int | |
14309 | nds32_elf_ex9_relocation_check (struct bfd_link_info *info, | |
14310 | Elf_Internal_Rela **irel, | |
14311 | Elf_Internal_Rela *irelend, | |
14312 | nds32_elf_blank_t *relax_blank_list, | |
f4cb41f4 | 14313 | asection *sec,bfd_vma *off, |
35c08157 KLC |
14314 | bfd_byte *contents) |
14315 | { | |
14316 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ | |
14317 | bfd_boolean nested_ex9, nested_loop; | |
14318 | bfd_boolean ex9_loop_aware; | |
14319 | /* We use the highest 1 byte of result to record | |
14320 | how many bytes location counter has to move. */ | |
14321 | int result = 0; | |
14322 | Elf_Internal_Rela *irel_save = NULL; | |
14323 | struct elf_nds32_link_hash_table *table; | |
14324 | ||
14325 | table = nds32_elf_hash_table (info); | |
14326 | ex9_loop_aware = table->ex9_loop_aware; | |
14327 | ||
14328 | while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset) | |
14329 | { | |
14330 | switch (ELF32_R_TYPE ((*irel)->r_info)) | |
14331 | { | |
14332 | case R_NDS32_RELAX_REGION_BEGIN: | |
14333 | /* Ignore code block. */ | |
14334 | nested_ex9 = FALSE; | |
14335 | nested_loop = FALSE; | |
14336 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) | |
14337 | || (ex9_loop_aware | |
14338 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))) | |
14339 | { | |
14340 | /* Check the region if loop or not. If it is true and | |
14341 | ex9-loop-aware is true, ignore the region till region end. */ | |
14342 | /* To save the status for in .no_relax ex9 region and | |
14343 | loop region to conform the block can do ex9 relaxation. */ | |
14344 | nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG); | |
14345 | nested_loop = (ex9_loop_aware | |
14346 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)); | |
14347 | while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop)) | |
14348 | { | |
14349 | (*irel)++; | |
14350 | if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN) | |
14351 | { | |
14352 | /* There may be nested region. */ | |
14353 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) | |
14354 | nested_ex9 = TRUE; | |
14355 | else if (ex9_loop_aware | |
14356 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) | |
14357 | nested_loop = TRUE; | |
14358 | } | |
14359 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END) | |
14360 | { | |
14361 | /* The end of region. */ | |
14362 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) | |
14363 | nested_ex9 = FALSE; | |
14364 | else if (ex9_loop_aware | |
14365 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) | |
14366 | nested_loop = FALSE; | |
14367 | } | |
1c8f6a4d | 14368 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL |
35c08157 KLC |
14369 | && ((*irel)->r_addend & 0x1f) == 2) |
14370 | { | |
14371 | /* Alignment exist in the region. */ | |
14372 | result |= CLEAN_PRE; | |
14373 | if (((*irel)->r_offset - | |
14374 | get_nds32_elf_blank_total (&relax_blank_list, | |
14375 | (*irel)->r_offset, 0)) & 0x02) | |
14376 | result |= PUSH_PRE; | |
14377 | } | |
14378 | } | |
14379 | if ((*irel) >= irelend) | |
14380 | *off = sec->size; | |
14381 | else | |
14382 | *off = (*irel)->r_offset; | |
14383 | ||
14384 | /* The final instruction in the region, regard this one as data to ignore it. */ | |
14385 | result |= DATA_EXIST; | |
14386 | return result; | |
14387 | } | |
14388 | break; | |
14389 | ||
14390 | case R_NDS32_LABEL: | |
1c8f6a4d | 14391 | if (((*irel)->r_addend & 0x1f) == 2) |
35c08157 KLC |
14392 | { |
14393 | /* Check this point is align and decide to do ex9 or not. */ | |
14394 | result |= CLEAN_PRE; | |
14395 | if (((*irel)->r_offset - | |
14396 | get_nds32_elf_blank_total (&relax_blank_list, | |
14397 | (*irel)->r_offset, 0)) & 0x02) | |
14398 | result |= PUSH_PRE; | |
14399 | } | |
14400 | break; | |
14401 | case R_NDS32_32_RELA: | |
14402 | /* Data. */ | |
14403 | result |= (4 << 24); | |
14404 | result |= DATA_EXIST; | |
14405 | break; | |
14406 | case R_NDS32_16_RELA: | |
14407 | /* Data. */ | |
14408 | result |= (2 << 24); | |
14409 | result |= DATA_EXIST; | |
14410 | break; | |
14411 | case R_NDS32_DATA: | |
14412 | /* Data. */ | |
14413 | /* The least code alignment is 2. If the data is only one byte, | |
14414 | we have to shift one more byte. */ | |
14415 | if ((*irel)->r_addend == 1) | |
14416 | result |= ((*irel)->r_addend << 25) ; | |
14417 | else | |
14418 | result |= ((*irel)->r_addend << 24) ; | |
14419 | ||
14420 | result |= DATA_EXIST; | |
14421 | break; | |
14422 | ||
14423 | case R_NDS32_25_PCREL_RELA: | |
14424 | case R_NDS32_SDA16S3_RELA: | |
14425 | case R_NDS32_SDA15S3_RELA: | |
14426 | case R_NDS32_SDA15S3: | |
14427 | case R_NDS32_SDA17S2_RELA: | |
14428 | case R_NDS32_SDA15S2_RELA: | |
14429 | case R_NDS32_SDA12S2_SP_RELA: | |
14430 | case R_NDS32_SDA12S2_DP_RELA: | |
14431 | case R_NDS32_SDA15S2: | |
14432 | case R_NDS32_SDA18S1_RELA: | |
14433 | case R_NDS32_SDA15S1_RELA: | |
14434 | case R_NDS32_SDA15S1: | |
14435 | case R_NDS32_SDA19S0_RELA: | |
14436 | case R_NDS32_SDA15S0_RELA: | |
14437 | case R_NDS32_SDA15S0: | |
14438 | case R_NDS32_HI20_RELA: | |
14439 | case R_NDS32_LO12S0_ORI_RELA: | |
14440 | case R_NDS32_LO12S0_RELA: | |
14441 | case R_NDS32_LO12S1_RELA: | |
14442 | case R_NDS32_LO12S2_RELA: | |
14443 | /* These relocation is supported ex9 relaxation currently. */ | |
14444 | /* We have to save the relocation for using later, since we have | |
14445 | to check there is any alignment in the same address. */ | |
14446 | irel_save = *irel; | |
14447 | break; | |
14448 | default: | |
14449 | /* Not support relocations. */ | |
14450 | if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table) | |
1c8f6a4d KLC |
14451 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE |
14452 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16) | |
35c08157 KLC |
14453 | { |
14454 | /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here. | |
14455 | But we have to consider if there is any side-effect. */ | |
14456 | if (!(result & DATA_EXIST)) | |
14457 | { | |
14458 | /* We have to confirm there is no data relocation in the | |
14459 | same address. In general case, this won't happen. */ | |
14460 | /* We have to do ex9 conservative, for those relocation not | |
14461 | considerd we ignore instruction. */ | |
14462 | result |= DATA_EXIST; | |
14463 | if (*(contents + *off) & 0x80) | |
14464 | result |= (2 << 24); | |
14465 | else | |
14466 | result |= (4 << 24); | |
14467 | break; | |
14468 | } | |
14469 | } | |
14470 | } | |
14471 | if ((*irel) < irelend | |
14472 | && ((*irel) + 1) < irelend | |
14473 | && (*irel)->r_offset == ((*irel) + 1)->r_offset) | |
14474 | /* There are relocations pointing to the same address, we have to | |
14475 | check all of them. */ | |
14476 | (*irel)++; | |
14477 | else | |
14478 | { | |
14479 | if (irel_save) | |
14480 | *irel = irel_save; | |
14481 | return result; | |
14482 | } | |
14483 | } | |
14484 | return result; | |
14485 | } | |
14486 | ||
1c8f6a4d KLC |
14487 | /* Replace with ex9 instruction. */ |
14488 | ||
14489 | static bfd_boolean | |
14490 | nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off, | |
14491 | nds32_elf_blank_t **relax_blank_list, | |
14492 | struct elf_nds32_irel_entry *pre_irel_ptr, | |
14493 | struct elf_nds32_irel_entry **irel_list) | |
14494 | { | |
14495 | if (insn16 != 0) | |
14496 | { | |
14497 | /* Implement the ex9 relaxation. */ | |
14498 | bfd_putb16 (insn16, contents + pre_off); | |
14499 | if (!insert_nds32_elf_blank_recalc_total (relax_blank_list, | |
14500 | pre_off + 2, 2)) | |
14501 | return FALSE; | |
14502 | if (pre_irel_ptr != NULL) | |
14503 | nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr); | |
14504 | } | |
14505 | return TRUE; | |
14506 | } | |
14507 | ||
35c08157 KLC |
14508 | /* Replace input file instruction which is in ex9 itable. */ |
14509 | ||
14510 | static bfd_boolean | |
14511 | nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec) | |
14512 | { | |
14513 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; | |
14514 | bfd_byte *contents = NULL; | |
1c8f6a4d KLC |
14515 | bfd_vma off; |
14516 | uint16_t insn16, insn_ex9; | |
35c08157 | 14517 | /* `pre_*' are used to track previous instruction that can use ex9.it. */ |
1c8f6a4d KLC |
14518 | bfd_vma pre_off = -1; |
14519 | uint16_t pre_insn16 = 0; | |
35c08157 KLC |
14520 | struct elf_nds32_irel_entry *pre_irel_ptr = NULL; |
14521 | Elf_Internal_Rela *internal_relocs; | |
14522 | Elf_Internal_Rela *irel; | |
14523 | Elf_Internal_Rela *irelend; | |
14524 | Elf_Internal_Shdr *symtab_hdr; | |
14525 | Elf_Internal_Sym *isym = NULL; | |
14526 | nds32_elf_blank_t *relax_blank_list = NULL; | |
1c8f6a4d KLC |
14527 | uint32_t insn = 0; |
14528 | uint32_t insn_with_reg = 0; | |
14529 | uint32_t it_insn; | |
14530 | uint32_t it_insn_with_reg; | |
35c08157 KLC |
14531 | unsigned long r_symndx; |
14532 | asection *isec; | |
14533 | struct elf_nds32_irel_entry *irel_list = NULL; | |
14534 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); | |
14535 | int data_flag, do_replace, save_irel; | |
1c8f6a4d KLC |
14536 | struct elf_link_hash_entry_list *h_list; |
14537 | ||
35c08157 KLC |
14538 | |
14539 | /* Load section instructions, relocations, and symbol table. */ | |
0c4bd9d9 | 14540 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
35c08157 KLC |
14541 | || !nds32_get_local_syms (abfd, sec, &isym)) |
14542 | return FALSE; | |
1c8f6a4d KLC |
14543 | internal_relocs = |
14544 | _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */); | |
35c08157 KLC |
14545 | irelend = internal_relocs + sec->reloc_count; |
14546 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
14547 | ||
14548 | off = 0; | |
14549 | ||
14550 | /* Check if the object enable ex9. */ | |
1c8f6a4d KLC |
14551 | irel = find_relocs_at_address (internal_relocs, internal_relocs, |
14552 | irelend, R_NDS32_RELAX_ENTRY); | |
35c08157 KLC |
14553 | |
14554 | /* Check this section trigger ex9 relaxation. */ | |
14555 | if (irel == NULL | |
14556 | || irel >= irelend | |
14557 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
14558 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
14559 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) | |
14560 | return TRUE; | |
14561 | ||
14562 | irel = internal_relocs; | |
14563 | ||
14564 | /* Check alignment and fetch proper relocation. */ | |
14565 | while (off < sec->size) | |
14566 | { | |
14567 | struct elf_link_hash_entry *h = NULL; | |
14568 | struct elf_nds32_irel_entry *irel_ptr = NULL; | |
14569 | ||
14570 | /* Syn the instruction and the relocation. */ | |
14571 | while (irel != NULL && irel < irelend && irel->r_offset < off) | |
14572 | irel++; | |
14573 | ||
14574 | data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend, | |
14575 | relax_blank_list, sec, | |
14576 | &off, contents); | |
14577 | if (data_flag & PUSH_PRE) | |
1c8f6a4d KLC |
14578 | if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, |
14579 | &relax_blank_list, pre_irel_ptr, | |
14580 | &irel_list)) | |
14581 | return FALSE; | |
35c08157 KLC |
14582 | |
14583 | if (data_flag & CLEAN_PRE) | |
14584 | { | |
14585 | pre_off = 0; | |
14586 | pre_insn16 = 0; | |
14587 | pre_irel_ptr = NULL; | |
14588 | } | |
14589 | if (data_flag & DATA_EXIST) | |
14590 | { | |
14591 | /* We save the move offset in the highest byte. */ | |
14592 | off += (data_flag >> 24); | |
14593 | continue; | |
14594 | } | |
14595 | ||
14596 | if (*(contents + off) & 0x80) | |
14597 | { | |
14598 | /* 2-byte instruction. */ | |
14599 | off += 2; | |
14600 | continue; | |
14601 | } | |
14602 | ||
14603 | /* Load the instruction and its opcode with register for comparing. */ | |
14604 | ex9_insn = ex9_insn_head; | |
14605 | insn = bfd_getb32 (contents + off); | |
14606 | insn_with_reg = 0; | |
14607 | while (ex9_insn) | |
14608 | { | |
14609 | it_insn = strtol (ex9_insn->string, NULL, 16); | |
14610 | it_insn_with_reg = 0; | |
14611 | do_replace = 0; | |
14612 | save_irel = 0; | |
14613 | ||
14614 | if (irel != NULL && irel < irelend && irel->r_offset == off) | |
14615 | { | |
14616 | /* Insn with relocation. */ | |
14617 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
14618 | ||
14619 | if (ex9_insn->irel != NULL) | |
1c8f6a4d KLC |
14620 | nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn, |
14621 | &it_insn_with_reg); | |
35c08157 KLC |
14622 | |
14623 | if (ex9_insn->irel != NULL | |
1c8f6a4d KLC |
14624 | && (ELF32_R_TYPE (irel->r_info) == |
14625 | ELF32_R_TYPE (ex9_insn->irel->r_info)) | |
35c08157 KLC |
14626 | && (insn_with_reg == it_insn_with_reg)) |
14627 | { | |
14628 | /* Insn relocation and format is the same as table entry. */ | |
14629 | ||
14630 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA | |
14631 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA | |
14632 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA | |
14633 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA | |
14634 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA | |
14635 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
14636 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
14637 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
14638 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
14639 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
14640 | && ELF32_R_TYPE (irel->r_info) <= | |
14641 | R_NDS32_SDA12S2_SP_RELA) | |
14642 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
14643 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
14644 | { | |
14645 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14646 | if (r_symndx < symtab_hdr->sh_info) | |
14647 | { | |
14648 | /* Local symbol. */ | |
14649 | int shndx = isym[r_symndx].st_shndx; | |
14650 | ||
14651 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
14652 | if (ex9_insn->sec == isec | |
14653 | && ex9_insn->irel->r_addend == irel->r_addend | |
14654 | && ex9_insn->irel->r_info == irel->r_info) | |
14655 | { | |
14656 | do_replace = 1; | |
14657 | save_irel = 1; | |
14658 | } | |
14659 | } | |
14660 | else | |
14661 | { | |
14662 | /* External symbol. */ | |
14663 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14664 | if (ex9_insn->m_list) | |
14665 | { | |
35c08157 KLC |
14666 | h_list = ex9_insn->m_list->h_list; |
14667 | while (h_list) | |
14668 | { | |
14669 | if (h == h_list->h | |
1c8f6a4d KLC |
14670 | && (ex9_insn->m_list->irel->r_addend == |
14671 | irel->r_addend)) | |
35c08157 KLC |
14672 | { |
14673 | do_replace = 1; | |
14674 | save_irel = 1; | |
14675 | break; | |
14676 | } | |
14677 | h_list = h_list->next; | |
14678 | } | |
14679 | } | |
14680 | } | |
14681 | } | |
14682 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA) | |
14683 | { | |
14684 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14685 | if (r_symndx < symtab_hdr->sh_info) | |
14686 | { | |
14687 | /* Local symbols. Compare its base symbol and offset. */ | |
14688 | int shndx = isym[r_symndx].st_shndx; | |
14689 | ||
14690 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
14691 | if (ex9_insn->sec == isec | |
14692 | && ex9_insn->irel->r_addend == irel->r_addend | |
14693 | && ex9_insn->irel->r_info == irel->r_info) | |
14694 | { | |
14695 | do_replace = 1; | |
14696 | save_irel = 1; | |
14697 | } | |
14698 | } | |
14699 | else | |
14700 | { | |
14701 | /* External symbol. */ | |
14702 | struct elf_link_hash_entry_mul_list *m_list; | |
14703 | ||
14704 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14705 | m_list = ex9_insn->m_list; | |
14706 | ||
14707 | while (m_list) | |
14708 | { | |
1c8f6a4d | 14709 | h_list = m_list->h_list; |
35c08157 KLC |
14710 | |
14711 | while (h_list) | |
14712 | { | |
14713 | if (h == h_list->h | |
1c8f6a4d KLC |
14714 | && (m_list->irel->r_addend |
14715 | == irel->r_addend)) | |
35c08157 KLC |
14716 | { |
14717 | do_replace = 1; | |
14718 | save_irel = 1; | |
14719 | if (ex9_insn->next | |
14720 | && ex9_insn->m_list | |
14721 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
14722 | { | |
14723 | /* sethi multiple entry must be fixed */ | |
14724 | nds32_elf_ex9_insert_fix (sec, irel, | |
14725 | h, ex9_insn->order); | |
14726 | } | |
14727 | break; | |
14728 | } | |
14729 | h_list = h_list->next; | |
14730 | } | |
14731 | m_list = m_list->next; | |
14732 | } | |
14733 | } | |
14734 | } | |
14735 | } | |
14736 | ||
14737 | /* Import table: Check the symbol hash table and the | |
14738 | jump target. Only R_NDS32_25_PCREL_RELA now. */ | |
14739 | else if (ex9_insn->times == -1 | |
14740 | && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) | |
14741 | { | |
14742 | nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg); | |
14743 | if (insn_with_reg == it_insn_with_reg) | |
14744 | { | |
14745 | char code[10]; | |
14746 | bfd_vma relocation; | |
14747 | ||
14748 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14749 | if (r_symndx >= symtab_hdr->sh_info) | |
14750 | { | |
14751 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14752 | if ((h->root.type == bfd_link_hash_defined | |
14753 | || h->root.type == bfd_link_hash_defweak) | |
1c8f6a4d KLC |
14754 | && h->root.u.def.section != NULL |
14755 | && h->root.u.def.section->output_section != NULL | |
35c08157 | 14756 | && h->root.u.def.section->gc_mark == 1 |
1c8f6a4d | 14757 | && bfd_is_abs_section (h->root.u.def.section) |
35c08157 KLC |
14758 | && h->root.u.def.value > sec->size) |
14759 | { | |
1c8f6a4d KLC |
14760 | relocation = h->root.u.def.value + |
14761 | h->root.u.def.section->output_section->vma + | |
14762 | h->root.u.def.section->output_offset; | |
35c08157 | 14763 | relocation += irel->r_addend; |
1c8f6a4d KLC |
14764 | insn = insn_with_reg |
14765 | | ((relocation >> 1) & 0xffffff); | |
14766 | snprintf (code, sizeof (code), "%08x", insn); | |
35c08157 KLC |
14767 | if (strcmp (code, ex9_insn->string) == 0) |
14768 | { | |
14769 | do_replace = 1; | |
14770 | save_irel = 1; | |
14771 | } | |
14772 | } | |
14773 | } | |
14774 | } | |
14775 | } | |
14776 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
1c8f6a4d KLC |
14777 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
14778 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
35c08157 KLC |
14779 | { |
14780 | /* These relocations do not have to relocate contens, so it can | |
14781 | be regard as instruction without relocation. */ | |
14782 | if (insn == it_insn && ex9_insn->irel == NULL) | |
14783 | do_replace = 1; | |
14784 | } | |
14785 | } | |
14786 | else | |
14787 | { | |
14788 | /* Instruction without relocation, we only | |
14789 | have to compare their byte code. */ | |
14790 | if (insn == it_insn && ex9_insn->irel == NULL) | |
14791 | do_replace = 1; | |
14792 | } | |
14793 | ||
14794 | /* Insntruction match so replacing the code here. */ | |
14795 | if (do_replace == 1) | |
14796 | { | |
14797 | /* There are two formats of ex9 instruction. */ | |
14798 | if (ex9_insn->order < 32) | |
14799 | insn_ex9 = INSN_EX9_IT_2; | |
14800 | else | |
14801 | insn_ex9 = INSN_EX9_IT_1; | |
14802 | insn16 = insn_ex9 | ex9_insn->order; | |
14803 | ||
1c8f6a4d KLC |
14804 | /* Insert ex9 instruction. */ |
14805 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, | |
14806 | &relax_blank_list, pre_irel_ptr, | |
14807 | &irel_list); | |
35c08157 KLC |
14808 | pre_off = off; |
14809 | pre_insn16 = insn16; | |
14810 | ||
14811 | if (save_irel) | |
14812 | { | |
14813 | /* For instuction with relocation do relax. */ | |
14814 | irel_ptr = (struct elf_nds32_irel_entry *) | |
14815 | bfd_malloc (sizeof (struct elf_nds32_irel_entry)); | |
14816 | irel_ptr->irel = irel; | |
14817 | irel_ptr->next = NULL; | |
14818 | pre_irel_ptr = irel_ptr; | |
14819 | } | |
14820 | else | |
14821 | pre_irel_ptr = NULL; | |
14822 | break; | |
14823 | } | |
14824 | ex9_insn = ex9_insn->next; | |
14825 | } | |
14826 | off += 4; | |
14827 | } | |
14828 | ||
1c8f6a4d KLC |
14829 | /* Insert ex9 instruction. */ |
14830 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, | |
14831 | &relax_blank_list, pre_irel_ptr, | |
14832 | &irel_list); | |
35c08157 KLC |
14833 | |
14834 | /* Delete the redundant code. */ | |
14835 | if (relax_blank_list) | |
14836 | { | |
14837 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
14838 | relax_blank_list = NULL; | |
14839 | } | |
14840 | ||
14841 | /* Clear the relocation that is replaced by ex9. */ | |
14842 | while (irel_list) | |
14843 | { | |
14844 | struct elf_nds32_irel_entry *irel_ptr; | |
14845 | ||
14846 | irel_ptr = irel_list; | |
14847 | irel_list = irel_ptr->next; | |
14848 | irel_ptr->irel->r_info = | |
14849 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN); | |
14850 | free (irel_ptr); | |
14851 | } | |
14852 | return TRUE; | |
14853 | } | |
14854 | ||
14855 | /* Initialize ex9 hash table. */ | |
14856 | ||
14857 | int | |
14858 | nds32_elf_ex9_init (void) | |
14859 | { | |
14860 | if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc, | |
14861 | sizeof (struct elf_nds32_code_hash_entry), | |
14862 | 1023)) | |
14863 | { | |
14864 | (*_bfd_error_handler) (_("Linker: cannot init ex9 hash table error \n")); | |
14865 | return FALSE; | |
14866 | } | |
14867 | return TRUE; | |
14868 | } | |
14869 | ||
14870 | /* Predict how many bytes will be relaxed with ex9 and ifc. */ | |
14871 | ||
14872 | static void | |
14873 | nds32_elf_ex9_total_relax (struct bfd_link_info *info) | |
14874 | { | |
14875 | struct elf_nds32_insn_times_entry *ex9_insn; | |
14876 | struct elf_nds32_insn_times_entry *temp; | |
14877 | int target_optimize; | |
14878 | struct elf_nds32_link_hash_table *table; | |
14879 | ||
14880 | if (ex9_insn_head == NULL) | |
14881 | return; | |
14882 | ||
14883 | table = nds32_elf_hash_table (info); | |
14884 | target_optimize = table->target_optimize; | |
14885 | ex9_insn = ex9_insn_head; | |
14886 | while (ex9_insn) | |
14887 | { | |
14888 | ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size; | |
14889 | temp = ex9_insn; | |
14890 | ex9_insn = ex9_insn->next; | |
14891 | free (temp); | |
14892 | } | |
14893 | ex9_insn_head = NULL; | |
14894 | ||
14895 | if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON)) | |
14896 | { | |
14897 | /* Examine ifc reduce size. */ | |
14898 | struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head; | |
14899 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
14900 | int size = 0; | |
14901 | ||
14902 | while (ifc_ent) | |
14903 | { | |
14904 | if (ifc_ent->enable == 0) | |
14905 | { | |
14906 | /* Not ifc yet. */ | |
14907 | irel_ptr = ifc_ent->irel_head; | |
14908 | while (irel_ptr) | |
14909 | { | |
14910 | size += 2; | |
14911 | irel_ptr = irel_ptr->next; | |
14912 | } | |
14913 | } | |
14914 | size -= 2; | |
14915 | ifc_ent = ifc_ent->next; | |
14916 | } | |
14917 | ex9_relax_size += size; | |
14918 | } | |
14919 | } | |
14920 | ||
14921 | /* Finish ex9 table. */ | |
14922 | ||
14923 | void | |
14924 | nds32_elf_ex9_finish (struct bfd_link_info *link_info) | |
14925 | { | |
35c08157 KLC |
14926 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); |
14927 | nds32_elf_order_insn_times (link_info); | |
14928 | nds32_elf_ex9_total_relax (link_info); | |
14929 | /* Traverse the hash table and count its times. */ | |
14930 | nds32_elf_code_hash_traverse (nds32_elf_count_insn_times); | |
14931 | nds32_elf_order_insn_times (link_info); | |
14932 | nds32_elf_ex9_build_itable (link_info); | |
35c08157 KLC |
14933 | } |
14934 | ||
14935 | /* Relocate the entries in ex9 table. */ | |
14936 | ||
14937 | static bfd_vma | |
14938 | nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr, | |
14939 | struct bfd_link_info *link_info) | |
14940 | { | |
14941 | Elf_Internal_Sym *isym = NULL; | |
14942 | bfd_vma relocation = -1; | |
1c8f6a4d | 14943 | struct elf_link_hash_entry *h; |
35c08157 KLC |
14944 | |
14945 | if (ptr->m_list != NULL) | |
14946 | { | |
14947 | /* Global symbol. */ | |
1c8f6a4d KLC |
14948 | h = ptr->m_list->h_list->h; |
14949 | if ((h->root.type == bfd_link_hash_defined | |
14950 | || h->root.type == bfd_link_hash_defweak) | |
14951 | && h->root.u.def.section != NULL | |
14952 | && h->root.u.def.section->output_section != NULL) | |
35c08157 KLC |
14953 | { |
14954 | ||
1c8f6a4d KLC |
14955 | relocation = h->root.u.def.value + |
14956 | h->root.u.def.section->output_section->vma + | |
14957 | h->root.u.def.section->output_offset; | |
35c08157 KLC |
14958 | relocation += ptr->m_list->irel->r_addend; |
14959 | } | |
14960 | else | |
14961 | relocation = 0; | |
14962 | } | |
14963 | else if (ptr->sec !=NULL) | |
14964 | { | |
14965 | /* Local symbol. */ | |
14966 | Elf_Internal_Sym sym; | |
14967 | asection *sec = NULL; | |
14968 | asection isec; | |
14969 | asection *isec_ptr = &isec; | |
14970 | Elf_Internal_Rela irel_backup = *(ptr->irel); | |
14971 | asection *sec_backup = ptr->sec; | |
14972 | bfd *abfd = ptr->sec->owner; | |
14973 | ||
14974 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
14975 | return FALSE; | |
14976 | isym = isym + ELF32_R_SYM (ptr->irel->r_info); | |
14977 | ||
14978 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
14979 | if (sec != NULL) | |
14980 | *isec_ptr = *sec; | |
14981 | sym = *isym; | |
14982 | ||
14983 | /* The purpose is same as elf_link_input_bfd. */ | |
14984 | if (isec_ptr != NULL | |
14985 | && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE | |
14986 | && ELF_ST_TYPE (isym->st_info) != STT_SECTION) | |
14987 | { | |
14988 | sym.st_value = | |
14989 | _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr, | |
14990 | elf_section_data (isec_ptr)->sec_info, | |
14991 | isym->st_value); | |
14992 | } | |
14993 | relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym, | |
14994 | &ptr->sec, ptr->irel); | |
14995 | if (ptr->irel != NULL) | |
14996 | relocation += ptr->irel->r_addend; | |
14997 | ||
14998 | /* Restore origin value since there may be some insntructions that | |
14999 | could not be replaced with ex9.it. */ | |
15000 | *(ptr->irel) = irel_backup; | |
15001 | ptr->sec = sec_backup; | |
15002 | } | |
15003 | ||
15004 | return relocation; | |
15005 | } | |
15006 | ||
15007 | /* Import ex9 table and build list. */ | |
15008 | ||
15009 | void | |
15010 | nds32_elf_ex9_import_table (struct bfd_link_info *info) | |
15011 | { | |
1c8f6a4d | 15012 | int num = 0; |
35c08157 KLC |
15013 | bfd_byte *contents; |
15014 | unsigned long insn; | |
15015 | FILE *ex9_import_file; | |
15016 | int update_ex9_table; | |
15017 | struct elf_nds32_link_hash_table *table; | |
15018 | ||
15019 | table = nds32_elf_hash_table (info); | |
15020 | ex9_import_file = table->ex9_import_file; | |
1c8f6a4d | 15021 | rewind (table->ex9_import_file); |
35c08157 KLC |
15022 | |
15023 | contents = bfd_malloc (sizeof (bfd_byte) * 4); | |
15024 | ||
35c08157 | 15025 | /* Read instructions from the input file and build the list. */ |
1c8f6a4d | 15026 | while (!feof (ex9_import_file)) |
35c08157 KLC |
15027 | { |
15028 | char *code; | |
15029 | struct elf_nds32_insn_times_entry *ptr; | |
15030 | size_t nread; | |
15031 | ||
15032 | nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file); | |
1c8f6a4d KLC |
15033 | /* Ignore the final byte 0x0a. */ |
15034 | if (nread < 1) | |
15035 | break; | |
35c08157 KLC |
15036 | insn = bfd_getb32 (contents); |
15037 | code = bfd_malloc (sizeof (char) * 9); | |
15038 | snprintf (code, 9, "%08lx", insn); | |
15039 | ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
15040 | ptr->string = code; | |
15041 | ptr->order = num; | |
15042 | ptr->times = -1; | |
15043 | ptr->sec = NULL; | |
15044 | ptr->m_list = NULL; | |
15045 | ptr->rel_backup.r_offset = 0; | |
15046 | ptr->rel_backup.r_info = 0; | |
15047 | ptr->rel_backup.r_addend = 0; | |
15048 | ptr->irel = NULL; | |
15049 | ptr->next = NULL; | |
15050 | nds32_elf_ex9_insert_entry (ptr); | |
35c08157 KLC |
15051 | num++; |
15052 | } | |
15053 | ||
15054 | update_ex9_table = table->update_ex9_table; | |
15055 | if (update_ex9_table == 1) | |
15056 | { | |
15057 | /* It has to consider of sethi need to use multiple page | |
15058 | but it not be done yet. */ | |
15059 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); | |
15060 | nds32_elf_order_insn_times (info); | |
15061 | } | |
15062 | } | |
15063 | ||
15064 | /* Export ex9 table. */ | |
15065 | ||
15066 | static void | |
15067 | nds32_elf_ex9_export (struct bfd_link_info *info, | |
15068 | bfd_byte *contents, int size) | |
15069 | { | |
15070 | FILE *ex9_export_file; | |
15071 | struct elf_nds32_link_hash_table *table; | |
15072 | ||
15073 | table = nds32_elf_hash_table (info); | |
15074 | ex9_export_file = table->ex9_export_file; | |
15075 | fwrite (contents, sizeof (bfd_byte), size, ex9_export_file); | |
15076 | fclose (ex9_export_file); | |
15077 | } | |
15078 | ||
15079 | /* Adjust relocations of J and JAL in ex9.itable. | |
15080 | Export ex9 table. */ | |
15081 | ||
1c8f6a4d | 15082 | static void |
35c08157 KLC |
15083 | nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info) |
15084 | { | |
15085 | asection *table_sec = NULL; | |
15086 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; | |
15087 | struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2; | |
15088 | bfd *it_abfd; | |
1c8f6a4d | 15089 | uint32_t insn, insn_with_reg, source_insn; |
35c08157 KLC |
15090 | bfd_byte *contents = NULL, *source_contents = NULL; |
15091 | int size = 0; | |
15092 | bfd_vma gp; | |
15093 | int shift, update_ex9_table, offset = 0; | |
15094 | reloc_howto_type *howto = NULL; | |
15095 | Elf_Internal_Rela rel_backup; | |
15096 | unsigned short insn_ex9; | |
15097 | struct elf_nds32_link_hash_table *table; | |
1c8f6a4d KLC |
15098 | FILE *ex9_export_file; |
15099 | static bfd_boolean done = FALSE; | |
15100 | ||
15101 | if (done) | |
15102 | return; | |
15103 | ||
15104 | done = TRUE; | |
35c08157 KLC |
15105 | |
15106 | table = nds32_elf_hash_table (link_info); | |
15107 | if (table) | |
15108 | table->relax_status |= NDS32_RELAX_EX9_DONE; | |
15109 | ||
15110 | ||
15111 | update_ex9_table = table->update_ex9_table; | |
15112 | /* Generated ex9.itable exactly. */ | |
15113 | if (update_ex9_table == 0) | |
15114 | { | |
15115 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; | |
c72f2fb2 | 15116 | it_abfd = it_abfd->link.next) |
35c08157 KLC |
15117 | { |
15118 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); | |
15119 | if (table_sec != NULL) | |
15120 | break; | |
15121 | } | |
15122 | ||
15123 | if (table_sec != NULL) | |
15124 | { | |
15125 | bfd *output_bfd; | |
35c08157 KLC |
15126 | |
15127 | output_bfd = table_sec->output_section->owner; | |
15128 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15129 | if (table_sec->size == 0) | |
15130 | return; | |
15131 | ||
0c4bd9d9 | 15132 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) |
35c08157 | 15133 | return; |
35c08157 KLC |
15134 | } |
15135 | } | |
15136 | else | |
15137 | { | |
15138 | /* Set gp. */ | |
15139 | bfd *output_bfd; | |
15140 | ||
15141 | output_bfd = link_info->input_bfds->sections->output_section->owner; | |
15142 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15143 | contents = bfd_malloc (sizeof (bfd_byte) * 2048); | |
15144 | } | |
15145 | ||
15146 | /* Relocate instruction. */ | |
15147 | while (ex9_insn) | |
15148 | { | |
15149 | bfd_vma relocation, min_relocation = 0xffffffff; | |
15150 | ||
15151 | insn = strtol (ex9_insn->string, NULL, 16); | |
15152 | insn_with_reg = 0; | |
15153 | if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL) | |
15154 | { | |
15155 | if (ex9_insn->m_list) | |
15156 | rel_backup = ex9_insn->m_list->rel_backup; | |
15157 | else | |
15158 | rel_backup = ex9_insn->rel_backup; | |
15159 | ||
15160 | nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg); | |
15161 | howto = | |
15162 | bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE | |
15163 | (rel_backup.r_info)); | |
15164 | shift = howto->rightshift; | |
15165 | if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA | |
15166 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA | |
15167 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA | |
15168 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA | |
15169 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA) | |
15170 | { | |
15171 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15172 | insn = | |
15173 | insn_with_reg | ((relocation >> shift) & | |
15174 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15175 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15176 | } |
15177 | else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3 | |
15178 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0) | |
15179 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA | |
15180 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA) | |
15181 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15182 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15183 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA | |
15184 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA)) | |
15185 | { | |
15186 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15187 | insn = | |
15188 | insn_with_reg | (((relocation - gp) >> shift) & | |
15189 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15190 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15191 | } |
15192 | else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA) | |
15193 | { | |
15194 | /* Sethi may be multiple entry for one insn. */ | |
1c8f6a4d KLC |
15195 | if (ex9_insn->next && ex9_insn->m_list |
15196 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
35c08157 KLC |
15197 | { |
15198 | struct elf_link_hash_entry_mul_list *m_list; | |
15199 | struct elf_nds32_ex9_refix *fix_ptr; | |
1c8f6a4d | 15200 | struct elf_link_hash_entry *h; |
35c08157 KLC |
15201 | |
15202 | temp_ptr = ex9_insn; | |
15203 | temp_ptr2 = ex9_insn; | |
15204 | m_list = ex9_insn->m_list; | |
15205 | while (m_list) | |
15206 | { | |
1c8f6a4d KLC |
15207 | h = m_list->h_list->h; |
15208 | relocation = h->root.u.def.value + | |
15209 | h->root.u.def.section->output_section->vma + | |
15210 | h->root.u.def.section->output_offset; | |
35c08157 KLC |
15211 | relocation += m_list->irel->r_addend; |
15212 | ||
15213 | if (relocation < min_relocation) | |
15214 | min_relocation = relocation; | |
15215 | m_list = m_list->next; | |
15216 | } | |
15217 | relocation = min_relocation; | |
15218 | ||
15219 | /* Put insntruction into ex9 table. */ | |
15220 | insn = insn_with_reg | |
15221 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15222 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15223 | relocation = relocation + 0x1000; /* hi20 */ |
15224 | ||
1c8f6a4d KLC |
15225 | while (ex9_insn->next && ex9_insn->m_list |
15226 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
35c08157 KLC |
15227 | { |
15228 | /* Multiple sethi. */ | |
15229 | ex9_insn = ex9_insn->next; | |
15230 | size += 4; | |
35c08157 KLC |
15231 | insn = |
15232 | insn_with_reg | ((relocation >> shift) & | |
15233 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15234 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15235 | relocation = relocation + 0x1000; /* hi20 */ |
15236 | } | |
15237 | ||
15238 | fix_ptr = ex9_refix_head; | |
15239 | while (fix_ptr) | |
15240 | { | |
15241 | /* Fix ex9 insn. */ | |
15242 | /* temp_ptr2 points to the head of multiple sethi. */ | |
15243 | temp_ptr = temp_ptr2; | |
15244 | while (fix_ptr->order != temp_ptr->order && fix_ptr->next) | |
15245 | { | |
15246 | fix_ptr = fix_ptr->next; | |
15247 | } | |
15248 | if (fix_ptr->order != temp_ptr->order) | |
15249 | break; | |
15250 | ||
15251 | /* Set source insn. */ | |
1c8f6a4d KLC |
15252 | relocation = |
15253 | fix_ptr->h->root.u.def.value + | |
15254 | fix_ptr->h->root.u.def.section->output_section->vma + | |
15255 | fix_ptr->h->root.u.def.section->output_offset; | |
35c08157 KLC |
15256 | relocation += fix_ptr->irel->r_addend; |
15257 | /* sethi imm is imm20s. */ | |
15258 | source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff); | |
15259 | ||
15260 | while (temp_ptr) | |
15261 | { | |
35c08157 KLC |
15262 | /* Match entry and source code. */ |
15263 | insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset); | |
15264 | if (insn == source_insn) | |
15265 | { | |
15266 | /* Fix the ex9 insn. */ | |
15267 | if (temp_ptr->order != fix_ptr->order) | |
15268 | { | |
15269 | if (!nds32_get_section_contents | |
15270 | (fix_ptr->sec->owner, fix_ptr->sec, | |
0c4bd9d9 | 15271 | &source_contents, TRUE)) |
35c08157 KLC |
15272 | (*_bfd_error_handler) |
15273 | (_("Linker: error cannot fixed ex9 relocation \n")); | |
15274 | if (temp_ptr->order < 32) | |
15275 | insn_ex9 = INSN_EX9_IT_2; | |
15276 | else | |
15277 | insn_ex9 = INSN_EX9_IT_1; | |
15278 | insn_ex9 = insn_ex9 | temp_ptr->order; | |
15279 | bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset); | |
15280 | } | |
15281 | break; | |
15282 | } | |
15283 | else | |
15284 | { | |
15285 | if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list) | |
15286 | (*_bfd_error_handler) | |
15287 | (_("Linker: error cannot fixed ex9 relocation \n")); | |
15288 | else | |
15289 | temp_ptr = temp_ptr->next; | |
15290 | } | |
15291 | } | |
15292 | fix_ptr = fix_ptr->next; | |
15293 | } | |
15294 | } | |
15295 | else | |
15296 | { | |
15297 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15298 | insn = insn_with_reg | |
15299 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15300 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15301 | } |
15302 | } | |
15303 | } | |
15304 | else | |
15305 | { | |
15306 | /* Insn without relocation does not have to be fixed | |
15307 | if need to update export table. */ | |
15308 | if (update_ex9_table == 1) | |
15309 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); | |
15310 | } | |
15311 | ex9_insn = ex9_insn->next; | |
15312 | size += 4; | |
15313 | } | |
15314 | ||
15315 | ex9_export_file = table->ex9_export_file; | |
15316 | if (ex9_export_file != NULL) | |
1c8f6a4d | 15317 | nds32_elf_ex9_export (link_info, contents, table_sec->size); |
35c08157 KLC |
15318 | else if (update_ex9_table == 1) |
15319 | { | |
1c8f6a4d KLC |
15320 | table->ex9_export_file = table->ex9_import_file; |
15321 | rewind (table->ex9_export_file); | |
15322 | nds32_elf_ex9_export (link_info, contents, size); | |
35c08157 KLC |
15323 | } |
15324 | } | |
15325 | ||
15326 | /* Generate ex9 hash table. */ | |
15327 | ||
15328 | static bfd_boolean | |
f4cb41f4 | 15329 | nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec, |
35c08157 KLC |
15330 | struct bfd_link_info *link_info) |
15331 | { | |
15332 | Elf_Internal_Rela *internal_relocs; | |
15333 | Elf_Internal_Rela *irelend; | |
15334 | Elf_Internal_Rela *irel; | |
15335 | Elf_Internal_Rela *jrel; | |
15336 | Elf_Internal_Rela rel_backup; | |
15337 | Elf_Internal_Shdr *symtab_hdr; | |
15338 | Elf_Internal_Sym *isym = NULL; | |
15339 | asection *isec; | |
15340 | struct elf_link_hash_entry **sym_hashes; | |
15341 | bfd_byte *contents = NULL; | |
f4cb41f4 | 15342 | bfd_vma off = 0; |
35c08157 | 15343 | unsigned long r_symndx; |
1c8f6a4d | 15344 | uint32_t insn, insn_with_reg; |
35c08157 KLC |
15345 | struct elf_link_hash_entry *h; |
15346 | int data_flag, shift, align; | |
15347 | bfd_vma relocation; | |
15348 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ | |
15349 | reloc_howto_type *howto = NULL; | |
15350 | ||
15351 | sym_hashes = elf_sym_hashes (abfd); | |
15352 | /* Load section instructions, relocations, and symbol table. */ | |
0c4bd9d9 | 15353 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
35c08157 KLC |
15354 | return FALSE; |
15355 | ||
15356 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
15357 | TRUE /* keep_memory */); | |
15358 | irelend = internal_relocs + sec->reloc_count; | |
15359 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
15360 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
15361 | return FALSE; | |
15362 | ||
15363 | /* Check the object if enable ex9. */ | |
15364 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, | |
15365 | R_NDS32_RELAX_ENTRY); | |
15366 | ||
15367 | /* Check this section trigger ex9 relaxation. */ | |
15368 | if (irel == NULL | |
15369 | || irel >= irelend | |
15370 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
15371 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
15372 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) | |
15373 | return TRUE; | |
15374 | ||
15375 | irel = internal_relocs; | |
15376 | ||
15377 | /* Push each insn into hash table. */ | |
15378 | while (off < sec->size) | |
15379 | { | |
15380 | char code[10]; | |
15381 | struct elf_nds32_code_hash_entry *entry; | |
15382 | ||
15383 | while (irel != NULL && irel < irelend && irel->r_offset < off) | |
15384 | irel++; | |
15385 | ||
1c8f6a4d KLC |
15386 | data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend, |
15387 | NULL, sec, &off, contents); | |
35c08157 KLC |
15388 | if (data_flag & DATA_EXIST) |
15389 | { | |
15390 | /* We save the move offset in the highest byte. */ | |
15391 | off += (data_flag >> 24); | |
15392 | continue; | |
15393 | } | |
15394 | ||
15395 | if (*(contents + off) & 0x80) | |
15396 | { | |
15397 | off += 2; | |
15398 | } | |
15399 | else | |
15400 | { | |
15401 | h = NULL; | |
15402 | isec = NULL; | |
15403 | jrel = NULL; | |
15404 | rel_backup.r_info = 0; | |
15405 | rel_backup.r_offset = 0; | |
15406 | rel_backup.r_addend = 0; | |
15407 | /* Load the instruction and its opcode with register for comparing. */ | |
15408 | insn = bfd_getb32 (contents + off); | |
15409 | insn_with_reg = 0; | |
15410 | if (irel != NULL && irel < irelend && irel->r_offset == off) | |
15411 | { | |
15412 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
15413 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
15414 | shift = howto->rightshift; | |
15415 | align = (1 << shift) - 1; | |
15416 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA | |
15417 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA | |
15418 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA | |
15419 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA | |
15420 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA | |
15421 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA | |
15422 | ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
15423 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
15424 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
15425 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
15426 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15427 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15428 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
15429 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
15430 | { | |
15431 | r_symndx = ELF32_R_SYM (irel->r_info); | |
15432 | jrel = irel; | |
15433 | rel_backup = *irel; | |
15434 | if (r_symndx < symtab_hdr->sh_info) | |
15435 | { | |
15436 | /* Local symbol. */ | |
15437 | int shndx = isym[r_symndx].st_shndx; | |
15438 | ||
15439 | bfd_vma st_value = (isym + r_symndx)->st_value; | |
15440 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
15441 | relocation = (isec->output_section->vma + isec->output_offset | |
15442 | + st_value + irel->r_addend); | |
15443 | } | |
15444 | else | |
15445 | { | |
15446 | /* External symbol. */ | |
15447 | bfd_boolean warned ATTRIBUTE_UNUSED; | |
15448 | bfd_boolean ignored ATTRIBUTE_UNUSED; | |
15449 | bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED; | |
15450 | asection *sym_sec; | |
15451 | ||
15452 | /* Maybe there is a better way to get h and relocation */ | |
15453 | RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel, | |
15454 | r_symndx, symtab_hdr, sym_hashes, | |
15455 | h, sym_sec, relocation, | |
15456 | unresolved_reloc, warned, ignored); | |
15457 | relocation += irel->r_addend; | |
1c8f6a4d KLC |
15458 | if ((h->root.type != bfd_link_hash_defined |
15459 | && h->root.type != bfd_link_hash_defweak) | |
15460 | || strcmp (h->root.root.string, "_FP_BASE_") == 0) | |
35c08157 KLC |
15461 | { |
15462 | off += 4; | |
15463 | continue; | |
15464 | } | |
15465 | } | |
15466 | ||
15467 | /* Check for gp relative instruction alignment. */ | |
15468 | if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
15469 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
15470 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
15471 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
15472 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15473 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15474 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
15475 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
15476 | { | |
15477 | bfd_vma gp; | |
15478 | bfd *output_bfd = sec->output_section->owner; | |
15479 | bfd_reloc_status_type r; | |
15480 | ||
15481 | /* If the symbol is in the abs section, the out_bfd will be null. | |
15482 | This happens when the relocation has a symbol@GOTOFF. */ | |
15483 | r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15484 | if (r != bfd_reloc_ok) | |
15485 | { | |
15486 | off += 4; | |
15487 | continue; | |
15488 | } | |
15489 | ||
15490 | relocation -= gp; | |
15491 | ||
15492 | /* Make sure alignment is correct. */ | |
15493 | if (relocation & align) | |
15494 | { | |
15495 | /* Incorrect alignment. */ | |
15496 | (*_bfd_error_handler) | |
15497 | (_("%s: warning: unaligned small data access. " | |
15498 | "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."), | |
15499 | bfd_get_filename (abfd), irel->r_offset, | |
15500 | irel->r_info, irel->r_addend, relocation, align); | |
15501 | off += 4; | |
15502 | continue; | |
15503 | } | |
15504 | } | |
15505 | ||
15506 | insn = insn_with_reg | |
15507 | | ((relocation >> shift) & nds32_elf_irel_mask (irel)); | |
15508 | } | |
15509 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
1c8f6a4d KLC |
15510 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
15511 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
35c08157 KLC |
15512 | { |
15513 | /* These relocations do not have to relocate contens, so it can | |
15514 | be regard as instruction without relocation. */ | |
15515 | } | |
15516 | else | |
15517 | { | |
15518 | off += 4; | |
15519 | continue; | |
15520 | } | |
15521 | } | |
15522 | ||
1c8f6a4d | 15523 | snprintf (code, sizeof (code), "%08x", insn); |
35c08157 KLC |
15524 | /* Copy "code". */ |
15525 | entry = (struct elf_nds32_code_hash_entry*) | |
15526 | bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE); | |
15527 | if (entry == NULL) | |
15528 | { | |
15529 | (*_bfd_error_handler) | |
15530 | (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code); | |
15531 | return FALSE; | |
15532 | } | |
15533 | if (h) | |
15534 | { | |
15535 | if (h->root.type == bfd_link_hash_undefined) | |
15536 | return TRUE; | |
15537 | /* Global symbol. */ | |
15538 | /* In order to do sethi with different symbol but same value. */ | |
15539 | if (entry->m_list == NULL) | |
15540 | { | |
15541 | struct elf_link_hash_entry_mul_list *m_list_new; | |
15542 | struct elf_link_hash_entry_list *h_list_new; | |
15543 | ||
15544 | m_list_new = (struct elf_link_hash_entry_mul_list *) | |
15545 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); | |
15546 | h_list_new = (struct elf_link_hash_entry_list *) | |
15547 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15548 | entry->m_list = m_list_new; | |
15549 | m_list_new->h_list = h_list_new; | |
15550 | m_list_new->rel_backup = rel_backup; | |
15551 | m_list_new->times = 1; | |
15552 | m_list_new->irel = jrel; | |
15553 | m_list_new->next = NULL; | |
15554 | h_list_new->h = h; | |
15555 | h_list_new->next = NULL; | |
15556 | } | |
15557 | else | |
15558 | { | |
15559 | struct elf_link_hash_entry_mul_list *m_list = entry->m_list; | |
15560 | struct elf_link_hash_entry_list *h_list; | |
15561 | ||
15562 | while (m_list) | |
15563 | { | |
15564 | /* Build the different symbols that point to the same address. */ | |
15565 | h_list = m_list->h_list; | |
15566 | if (h_list->h->root.u.def.value == h->root.u.def.value | |
15567 | && h_list->h->root.u.def.section->output_section->vma | |
15568 | == h->root.u.def.section->output_section->vma | |
15569 | && h_list->h->root.u.def.section->output_offset | |
15570 | == h->root.u.def.section->output_offset | |
15571 | && m_list->rel_backup.r_addend == rel_backup.r_addend) | |
15572 | { | |
15573 | m_list->times++; | |
15574 | m_list->irel = jrel; | |
15575 | while (h_list->h != h && h_list->next) | |
15576 | h_list = h_list->next; | |
15577 | if (h_list->h != h) | |
15578 | { | |
15579 | struct elf_link_hash_entry_list *h_list_new; | |
15580 | ||
15581 | h_list_new = (struct elf_link_hash_entry_list *) | |
15582 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15583 | h_list->next = h_list_new; | |
15584 | h_list_new->h = h; | |
15585 | h_list_new->next = NULL; | |
15586 | } | |
15587 | break; | |
15588 | } | |
15589 | /* The sethi case may have different address but the | |
15590 | hi20 is the same. */ | |
15591 | else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA | |
15592 | && m_list->next == NULL) | |
15593 | { | |
15594 | struct elf_link_hash_entry_mul_list *m_list_new; | |
15595 | struct elf_link_hash_entry_list *h_list_new; | |
15596 | ||
15597 | m_list_new = (struct elf_link_hash_entry_mul_list *) | |
15598 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); | |
15599 | h_list_new = (struct elf_link_hash_entry_list *) | |
15600 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15601 | m_list->next = m_list_new; | |
15602 | m_list_new->h_list = h_list_new; | |
15603 | m_list_new->rel_backup = rel_backup; | |
15604 | m_list_new->times = 1; | |
15605 | m_list_new->irel = jrel; | |
15606 | m_list_new->next = NULL; | |
15607 | h_list_new->h = h; | |
15608 | h_list_new->next = NULL; | |
15609 | break; | |
15610 | } | |
15611 | m_list = m_list->next; | |
15612 | } | |
15613 | if (!m_list) | |
15614 | { | |
15615 | off += 4; | |
15616 | continue; | |
15617 | } | |
15618 | } | |
15619 | } | |
15620 | else | |
15621 | { | |
15622 | /* Local symbol and insn without relocation*/ | |
15623 | entry->times++; | |
15624 | entry->rel_backup = rel_backup; | |
15625 | } | |
15626 | ||
15627 | /* Use in sethi insn with constant and global symbol in same format. */ | |
15628 | if (!jrel) | |
15629 | entry->const_insn = 1; | |
15630 | else | |
15631 | entry->irel = jrel; | |
15632 | entry->sec = isec; | |
15633 | off += 4; | |
15634 | } | |
15635 | } | |
15636 | return TRUE; | |
15637 | } | |
15638 | ||
15639 | /* Set the _ITB_BASE, and point it to ex9 table. */ | |
15640 | ||
15641 | bfd_boolean | |
15642 | nds32_elf_ex9_itb_base (struct bfd_link_info *link_info) | |
15643 | { | |
15644 | bfd *abfd; | |
15645 | asection *sec; | |
15646 | bfd *output_bfd = NULL; | |
15647 | struct bfd_link_hash_entry *bh = NULL; | |
35c08157 KLC |
15648 | |
15649 | if (is_ITB_BASE_set == 1) | |
15650 | return TRUE; | |
15651 | ||
15652 | is_ITB_BASE_set = 1; | |
15653 | ||
1c8f6a4d KLC |
15654 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE); |
15655 | ||
15656 | if (bh && (bh->type == bfd_link_hash_defined | |
15657 | || bh->type == bfd_link_hash_defweak)) | |
15658 | return TRUE; | |
35c08157 KLC |
15659 | |
15660 | for (abfd = link_info->input_bfds; abfd != NULL; | |
c72f2fb2 | 15661 | abfd = abfd->link.next) |
35c08157 KLC |
15662 | { |
15663 | sec = bfd_get_section_by_name (abfd, ".ex9.itable"); | |
15664 | if (sec != NULL) | |
15665 | { | |
15666 | output_bfd = sec->output_section->owner; | |
15667 | break; | |
15668 | } | |
15669 | } | |
15670 | if (output_bfd == NULL) | |
15671 | { | |
15672 | output_bfd = link_info->output_bfd; | |
15673 | if (output_bfd->sections == NULL) | |
15674 | return TRUE; | |
15675 | else | |
15676 | sec = bfd_abs_section_ptr; | |
15677 | } | |
15678 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", | |
15679 | FALSE, FALSE, TRUE); | |
15680 | return (_bfd_generic_link_add_one_symbol | |
15681 | (link_info, output_bfd, "_ITB_BASE_", | |
1c8f6a4d | 15682 | BSF_GLOBAL | BSF_WEAK, sec, 0, |
35c08157 KLC |
15683 | (const char *) NULL, FALSE, get_elf_backend_data |
15684 | (output_bfd)->collect, &bh)); | |
15685 | } /* End EX9.IT */ | |
15686 | \f | |
15687 | ||
15688 | #define ELF_ARCH bfd_arch_nds32 | |
15689 | #define ELF_MACHINE_CODE EM_NDS32 | |
15690 | #define ELF_MAXPAGESIZE 0x1000 | |
1c8f6a4d | 15691 | #define ELF_TARGET_ID NDS32_ELF_DATA |
35c08157 | 15692 | |
6d00b590 | 15693 | #define TARGET_BIG_SYM nds32_elf32_be_vec |
35c08157 | 15694 | #define TARGET_BIG_NAME "elf32-nds32be" |
6d00b590 | 15695 | #define TARGET_LITTLE_SYM nds32_elf32_le_vec |
35c08157 KLC |
15696 | #define TARGET_LITTLE_NAME "elf32-nds32le" |
15697 | ||
15698 | #define elf_info_to_howto nds32_info_to_howto | |
15699 | #define elf_info_to_howto_rel nds32_info_to_howto_rel | |
15700 | ||
15701 | #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create | |
15702 | #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data | |
15703 | #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data | |
15704 | #define bfd_elf32_bfd_relax_section nds32_elf_relax_section | |
15705 | #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags | |
15706 | ||
1c8f6a4d | 15707 | #define bfd_elf32_mkobject nds32_elf_mkobject |
35c08157 KLC |
15708 | #define elf_backend_action_discarded nds32_elf_action_discarded |
15709 | #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook | |
15710 | #define elf_backend_check_relocs nds32_elf_check_relocs | |
15711 | #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol | |
15712 | #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections | |
15713 | #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections | |
15714 | #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol | |
15715 | #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections | |
15716 | #define elf_backend_relocate_section nds32_elf_relocate_section | |
15717 | #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook | |
15718 | #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook | |
15719 | #define elf_backend_grok_prstatus nds32_elf_grok_prstatus | |
15720 | #define elf_backend_grok_psinfo nds32_elf_grok_psinfo | |
15721 | #define elf_backend_reloc_type_class nds32_elf_reloc_type_class | |
15722 | #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol | |
15723 | #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook | |
15724 | #define elf_backend_output_arch_syms nds32_elf_output_arch_syms | |
15725 | #define elf_backend_object_p nds32_elf_object_p | |
15726 | #define elf_backend_final_write_processing nds32_elf_final_write_processing | |
15727 | #define elf_backend_special_sections nds32_elf_special_sections | |
1c8f6a4d KLC |
15728 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
15729 | nds32_elf_get_relocated_section_contents | |
35c08157 KLC |
15730 | |
15731 | #define elf_backend_can_gc_sections 1 | |
15732 | #define elf_backend_can_refcount 1 | |
15733 | #define elf_backend_want_got_plt 1 | |
15734 | #define elf_backend_plt_readonly 1 | |
15735 | #define elf_backend_want_plt_sym 0 | |
15736 | #define elf_backend_got_header_size 12 | |
15737 | #define elf_backend_may_use_rel_p 1 | |
15738 | #define elf_backend_default_use_rela_p 1 | |
15739 | #define elf_backend_may_use_rela_p 1 | |
15740 | ||
15741 | #include "elf32-target.h" | |
15742 | ||
15743 | #undef ELF_MAXPAGESIZE | |
15744 | #define ELF_MAXPAGESIZE 0x2000 | |
15745 | ||
15746 | #undef TARGET_BIG_SYM | |
6d00b590 | 15747 | #define TARGET_BIG_SYM nds32_elf32_linux_be_vec |
35c08157 KLC |
15748 | #undef TARGET_BIG_NAME |
15749 | #define TARGET_BIG_NAME "elf32-nds32be-linux" | |
15750 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 15751 | #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec |
35c08157 KLC |
15752 | #undef TARGET_LITTLE_NAME |
15753 | #define TARGET_LITTLE_NAME "elf32-nds32le-linux" | |
15754 | #undef elf32_bed | |
15755 | #define elf32_bed elf32_nds32_lin_bed | |
15756 | ||
15757 | #include "elf32-target.h" |