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35c08157 | 1 | /* NDS32-specific support for 32-bit ELF. |
219d1afa | 2 | Copyright (C) 2012-2018 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); | |
35c08157 KLC |
59 | |
60 | /* Nds32 helper functions. */ | |
35c08157 | 61 | static bfd_vma calculate_memory_address |
0c4bd9d9 KLC |
62 | (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); |
63 | static int nds32_get_section_contents (bfd *, asection *, | |
64 | bfd_byte **, bfd_boolean); | |
35c08157 KLC |
65 | static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED, |
66 | Elf_Internal_Sym **); | |
35c08157 KLC |
67 | static bfd_boolean nds32_relax_fp_as_gp |
68 | (struct bfd_link_info *link_info, bfd *abfd, asection *sec, | |
69 | Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend, | |
70 | Elf_Internal_Sym *isymbuf); | |
71 | static bfd_boolean nds32_fag_remove_unused_fpbase | |
72 | (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs, | |
73 | Elf_Internal_Rela *irelend); | |
74 | ||
75 | enum | |
76 | { | |
77 | MACH_V1 = bfd_mach_n1h, | |
78 | MACH_V2 = bfd_mach_n1h_v2, | |
79 | MACH_V3 = bfd_mach_n1h_v3, | |
80 | MACH_V3M = bfd_mach_n1h_v3m | |
81 | }; | |
82 | ||
83 | #define MIN(a, b) ((a) > (b) ? (b) : (a)) | |
84 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
85 | ||
86 | /* The name of the dynamic interpreter. This is put in the .interp | |
87 | section. */ | |
88 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
89 | ||
90 | /* The nop opcode we use. */ | |
91 | #define NDS32_NOP32 0x40000009 | |
92 | #define NDS32_NOP16 0x9200 | |
93 | ||
94 | /* The size in bytes of an entry in the procedure linkage table. */ | |
95 | #define PLT_ENTRY_SIZE 24 | |
96 | #define PLT_HEADER_SIZE 24 | |
97 | ||
98 | /* The first entry in a procedure linkage table are reserved, | |
99 | and the initial contents are unimportant (we zero them out). | |
100 | Subsequent entries look like this. */ | |
07d6d2b8 AM |
101 | #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */ |
102 | #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */ | |
103 | #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */ | |
104 | #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */ | |
105 | #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */ | |
35c08157 KLC |
106 | |
107 | /* $ta is change to $r15 (from $r25). */ | |
108 | #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */ | |
07d6d2b8 AM |
109 | #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */ |
110 | #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */ | |
111 | #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */ | |
112 | #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */ | |
113 | #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */ | |
114 | ||
115 | #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */ | |
116 | #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */ | |
117 | #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */ | |
118 | #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
119 | #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */ | |
35c08157 KLC |
120 | |
121 | #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */ | |
07d6d2b8 AM |
122 | #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */ |
123 | #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */ | |
124 | #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */ | |
125 | #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
126 | #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */ | |
35c08157 | 127 | |
1c8f6a4d KLC |
128 | /* These are macros used to get the relocation accurate value. */ |
129 | #define ACCURATE_8BIT_S1 (0x100) | |
130 | #define ACCURATE_U9BIT_S1 (0x400) | |
131 | #define ACCURATE_12BIT_S1 (0x2000) | |
132 | #define ACCURATE_14BIT_S1 (0x4000) | |
133 | #define ACCURATE_19BIT (0x40000) | |
134 | ||
135 | /* These are macros used to get the relocation conservative value. */ | |
136 | #define CONSERVATIVE_8BIT_S1 (0x100 - 4) | |
137 | #define CONSERVATIVE_14BIT_S1 (0x4000 - 4) | |
138 | #define CONSERVATIVE_16BIT_S1 (0x10000 - 4) | |
139 | #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4) | |
140 | /* These must be more conservative because the address may be in | |
141 | different segment. */ | |
142 | #define CONSERVATIVE_15BIT (0x4000 - 0x1000) | |
143 | #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000) | |
144 | #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000) | |
145 | #define CONSERVATIVE_19BIT (0x40000 - 0x1000) | |
146 | #define CONSERVATIVE_20BIT (0x80000 - 0x1000) | |
147 | ||
35c08157 KLC |
148 | /* Size of small data/bss sections, used to calculate SDA_BASE. */ |
149 | static long got_size = 0; | |
150 | static int is_SDA_BASE_set = 0; | |
35c08157 | 151 | |
35c08157 KLC |
152 | /* Convert ELF-VER in eflags to string for debugging purpose. */ |
153 | static const char *const nds32_elfver_strtab[] = | |
154 | { | |
155 | "ELF-1.2", | |
156 | "ELF-1.3", | |
157 | "ELF-1.4", | |
158 | }; | |
159 | ||
160 | /* The nds32 linker needs to keep track of the number of relocs that it | |
161 | decides to copy in check_relocs for each symbol. This is so that | |
162 | it can discard PC relative relocs if it doesn't need them when | |
163 | linking with -Bsymbolic. We store the information in a field | |
164 | extending the regular ELF linker hash table. */ | |
165 | ||
166 | /* This structure keeps track of the number of PC relative relocs we | |
167 | have copied for a given symbol. */ | |
168 | ||
169 | struct elf_nds32_pcrel_relocs_copied | |
170 | { | |
171 | /* Next section. */ | |
172 | struct elf_nds32_pcrel_relocs_copied *next; | |
173 | /* A section in dynobj. */ | |
174 | asection *section; | |
175 | /* Number of relocs copied in this section. */ | |
176 | bfd_size_type count; | |
177 | }; | |
178 | ||
35c08157 KLC |
179 | /* Nds32 ELF linker hash entry. */ |
180 | ||
181 | struct elf_nds32_link_hash_entry | |
182 | { | |
183 | struct elf_link_hash_entry root; | |
184 | ||
185 | /* Track dynamic relocs copied for this symbol. */ | |
3bf083ed | 186 | struct elf_dyn_relocs *dyn_relocs; |
1c8f6a4d KLC |
187 | |
188 | /* For checking relocation type. */ | |
189 | #define GOT_UNKNOWN 0 | |
190 | #define GOT_NORMAL 1 | |
191 | #define GOT_TLS_IE 2 | |
192 | unsigned int tls_type; | |
35c08157 KLC |
193 | }; |
194 | ||
195 | /* Get the nds32 ELF linker hash table from a link_info structure. */ | |
196 | ||
197 | #define FP_BASE_NAME "_FP_BASE_" | |
198 | static int check_start_export_sym = 0; | |
35c08157 | 199 | |
1c8f6a4d KLC |
200 | /* The offset for executable tls relaxation. */ |
201 | #define TP_OFFSET 0x0 | |
202 | ||
203 | struct elf_nds32_obj_tdata | |
204 | { | |
205 | struct elf_obj_tdata root; | |
206 | ||
207 | /* tls_type for each local got entry. */ | |
208 | char *local_got_tls_type; | |
209 | }; | |
210 | ||
211 | #define elf_nds32_tdata(bfd) \ | |
212 | ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any) | |
213 | ||
214 | #define elf32_nds32_local_got_tls_type(bfd) \ | |
215 | (elf_nds32_tdata (bfd)->local_got_tls_type) | |
216 | ||
217 | #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent)) | |
218 | ||
219 | static bfd_boolean | |
220 | nds32_elf_mkobject (bfd *abfd) | |
221 | { | |
222 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata), | |
223 | NDS32_ELF_DATA); | |
224 | } | |
225 | ||
35c08157 KLC |
226 | /* Relocations used for relocation. */ |
227 | static reloc_howto_type nds32_elf_howto_table[] = | |
228 | { | |
229 | /* This reloc does nothing. */ | |
230 | HOWTO (R_NDS32_NONE, /* type */ | |
231 | 0, /* rightshift */ | |
6346d5ca AM |
232 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
233 | 0, /* bitsize */ | |
35c08157 KLC |
234 | FALSE, /* pc_relative */ |
235 | 0, /* bitpos */ | |
6346d5ca | 236 | complain_overflow_dont, /* complain_on_overflow */ |
35c08157 KLC |
237 | bfd_elf_generic_reloc, /* special_function */ |
238 | "R_NDS32_NONE", /* name */ | |
239 | FALSE, /* partial_inplace */ | |
240 | 0, /* src_mask */ | |
241 | 0, /* dst_mask */ | |
242 | FALSE), /* pcrel_offset */ | |
243 | ||
244 | /* A 16 bit absolute relocation. */ | |
245 | HOWTO (R_NDS32_16, /* type */ | |
246 | 0, /* rightshift */ | |
247 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
248 | 16, /* bitsize */ | |
249 | FALSE, /* pc_relative */ | |
250 | 0, /* bitpos */ | |
251 | complain_overflow_bitfield, /* complain_on_overflow */ | |
252 | nds32_elf_generic_reloc, /* special_function */ | |
253 | "R_NDS32_16", /* name */ | |
254 | FALSE, /* partial_inplace */ | |
255 | 0xffff, /* src_mask */ | |
256 | 0xffff, /* dst_mask */ | |
257 | FALSE), /* pcrel_offset */ | |
258 | ||
259 | /* A 32 bit absolute relocation. */ | |
260 | HOWTO (R_NDS32_32, /* type */ | |
261 | 0, /* rightshift */ | |
262 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
263 | 32, /* bitsize */ | |
264 | FALSE, /* pc_relative */ | |
265 | 0, /* bitpos */ | |
266 | complain_overflow_bitfield, /* complain_on_overflow */ | |
267 | nds32_elf_generic_reloc, /* special_function */ | |
268 | "R_NDS32_32", /* name */ | |
269 | FALSE, /* partial_inplace */ | |
270 | 0xffffffff, /* src_mask */ | |
271 | 0xffffffff, /* dst_mask */ | |
272 | FALSE), /* pcrel_offset */ | |
273 | ||
274 | /* A 20 bit address. */ | |
275 | HOWTO (R_NDS32_20, /* type */ | |
276 | 0, /* rightshift */ | |
277 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
278 | 20, /* bitsize */ | |
279 | FALSE, /* pc_relative */ | |
280 | 0, /* bitpos */ | |
281 | complain_overflow_unsigned, /* complain_on_overflow */ | |
282 | nds32_elf_generic_reloc, /* special_function */ | |
283 | "R_NDS32_20", /* name */ | |
284 | FALSE, /* partial_inplace */ | |
285 | 0xfffff, /* src_mask */ | |
286 | 0xfffff, /* dst_mask */ | |
287 | FALSE), /* pcrel_offset */ | |
288 | ||
289 | /* An PC Relative 9-bit relocation, shifted by 2. | |
290 | This reloc is complicated because relocations are relative to pc & -4. | |
291 | i.e. branches in the right insn slot use the address of the left insn | |
292 | slot for pc. */ | |
293 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
294 | Branch relaxing in the assembler can store the addend in the insn, | |
295 | and if bfd_install_relocation gets called the addend may get added | |
296 | again. */ | |
297 | HOWTO (R_NDS32_9_PCREL, /* type */ | |
298 | 1, /* rightshift */ | |
299 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
300 | 8, /* bitsize */ | |
301 | TRUE, /* pc_relative */ | |
302 | 0, /* bitpos */ | |
303 | complain_overflow_signed, /* complain_on_overflow */ | |
304 | nds32_elf_9_pcrel_reloc, /* special_function */ | |
305 | "R_NDS32_9_PCREL", /* name */ | |
306 | FALSE, /* partial_inplace */ | |
307 | 0xff, /* src_mask */ | |
308 | 0xff, /* dst_mask */ | |
309 | TRUE), /* pcrel_offset */ | |
310 | ||
311 | /* A relative 15 bit relocation, right shifted by 1. */ | |
312 | HOWTO (R_NDS32_15_PCREL, /* type */ | |
313 | 1, /* rightshift */ | |
314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
315 | 14, /* bitsize */ | |
316 | TRUE, /* pc_relative */ | |
317 | 0, /* bitpos */ | |
318 | complain_overflow_signed, /* complain_on_overflow */ | |
319 | bfd_elf_generic_reloc, /* special_function */ | |
320 | "R_NDS32_15_PCREL", /* name */ | |
321 | FALSE, /* partial_inplace */ | |
322 | 0x3fff, /* src_mask */ | |
323 | 0x3fff, /* dst_mask */ | |
324 | TRUE), /* pcrel_offset */ | |
325 | ||
326 | /* A relative 17 bit relocation, right shifted by 1. */ | |
327 | HOWTO (R_NDS32_17_PCREL, /* type */ | |
328 | 1, /* rightshift */ | |
329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
330 | 16, /* bitsize */ | |
331 | TRUE, /* pc_relative */ | |
332 | 0, /* bitpos */ | |
333 | complain_overflow_signed, /* complain_on_overflow */ | |
334 | bfd_elf_generic_reloc, /* special_function */ | |
335 | "R_NDS32_17_PCREL", /* name */ | |
336 | FALSE, /* partial_inplace */ | |
337 | 0xffff, /* src_mask */ | |
338 | 0xffff, /* dst_mask */ | |
339 | TRUE), /* pcrel_offset */ | |
340 | ||
341 | /* A relative 25 bit relocation, right shifted by 1. */ | |
342 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
343 | Branch relaxing in the assembler can store the addend in the insn, | |
344 | and if bfd_install_relocation gets called the addend may get added | |
345 | again. */ | |
346 | HOWTO (R_NDS32_25_PCREL, /* type */ | |
347 | 1, /* rightshift */ | |
348 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
349 | 24, /* bitsize */ | |
350 | TRUE, /* pc_relative */ | |
351 | 0, /* bitpos */ | |
352 | complain_overflow_signed, /* complain_on_overflow */ | |
353 | bfd_elf_generic_reloc, /* special_function */ | |
354 | "R_NDS32_25_PCREL", /* name */ | |
355 | FALSE, /* partial_inplace */ | |
356 | 0xffffff, /* src_mask */ | |
357 | 0xffffff, /* dst_mask */ | |
358 | TRUE), /* pcrel_offset */ | |
359 | ||
360 | /* High 20 bits of address when lower 12 is or'd in. */ | |
361 | HOWTO (R_NDS32_HI20, /* type */ | |
362 | 12, /* rightshift */ | |
363 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
364 | 20, /* bitsize */ | |
365 | FALSE, /* pc_relative */ | |
366 | 0, /* bitpos */ | |
367 | complain_overflow_dont,/* complain_on_overflow */ | |
368 | nds32_elf_hi20_reloc, /* special_function */ | |
369 | "R_NDS32_HI20", /* name */ | |
370 | FALSE, /* partial_inplace */ | |
371 | 0x000fffff, /* src_mask */ | |
372 | 0x000fffff, /* dst_mask */ | |
373 | FALSE), /* pcrel_offset */ | |
374 | ||
375 | /* Lower 12 bits of address. */ | |
376 | HOWTO (R_NDS32_LO12S3, /* type */ | |
377 | 3, /* rightshift */ | |
378 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
379 | 9, /* bitsize */ | |
380 | FALSE, /* pc_relative */ | |
381 | 0, /* bitpos */ | |
382 | complain_overflow_dont,/* complain_on_overflow */ | |
383 | nds32_elf_lo12_reloc, /* special_function */ | |
384 | "R_NDS32_LO12S3", /* name */ | |
385 | FALSE, /* partial_inplace */ | |
386 | 0x000001ff, /* src_mask */ | |
387 | 0x000001ff, /* dst_mask */ | |
388 | FALSE), /* pcrel_offset */ | |
389 | ||
390 | /* Lower 12 bits of address. */ | |
391 | HOWTO (R_NDS32_LO12S2, /* type */ | |
392 | 2, /* rightshift */ | |
393 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
394 | 10, /* bitsize */ | |
395 | FALSE, /* pc_relative */ | |
396 | 0, /* bitpos */ | |
397 | complain_overflow_dont,/* complain_on_overflow */ | |
398 | nds32_elf_lo12_reloc, /* special_function */ | |
399 | "R_NDS32_LO12S2", /* name */ | |
400 | FALSE, /* partial_inplace */ | |
401 | 0x000003ff, /* src_mask */ | |
402 | 0x000003ff, /* dst_mask */ | |
403 | FALSE), /* pcrel_offset */ | |
404 | ||
405 | /* Lower 12 bits of address. */ | |
406 | HOWTO (R_NDS32_LO12S1, /* type */ | |
407 | 1, /* rightshift */ | |
408 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
409 | 11, /* bitsize */ | |
410 | FALSE, /* pc_relative */ | |
411 | 0, /* bitpos */ | |
412 | complain_overflow_dont,/* complain_on_overflow */ | |
413 | nds32_elf_lo12_reloc, /* special_function */ | |
414 | "R_NDS32_LO12S1", /* name */ | |
415 | FALSE, /* partial_inplace */ | |
416 | 0x000007ff, /* src_mask */ | |
417 | 0x000007ff, /* dst_mask */ | |
418 | FALSE), /* pcrel_offset */ | |
419 | ||
420 | /* Lower 12 bits of address. */ | |
421 | HOWTO (R_NDS32_LO12S0, /* type */ | |
422 | 0, /* rightshift */ | |
423 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
424 | 12, /* bitsize */ | |
425 | FALSE, /* pc_relative */ | |
426 | 0, /* bitpos */ | |
427 | complain_overflow_dont,/* complain_on_overflow */ | |
428 | nds32_elf_lo12_reloc, /* special_function */ | |
429 | "R_NDS32_LO12S0", /* name */ | |
430 | FALSE, /* partial_inplace */ | |
431 | 0x00000fff, /* src_mask */ | |
432 | 0x00000fff, /* dst_mask */ | |
433 | FALSE), /* pcrel_offset */ | |
434 | ||
435 | /* Small data area 15 bits offset. */ | |
436 | HOWTO (R_NDS32_SDA15S3, /* type */ | |
437 | 3, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 15, /* bitsize */ | |
440 | FALSE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_signed, /* complain_on_overflow */ | |
443 | nds32_elf_sda15_reloc, /* special_function */ | |
444 | "R_NDS32_SDA15S3", /* name */ | |
445 | FALSE, /* partial_inplace */ | |
446 | 0x00007fff, /* src_mask */ | |
447 | 0x00007fff, /* dst_mask */ | |
448 | FALSE), /* pcrel_offset */ | |
449 | ||
450 | /* Small data area 15 bits offset. */ | |
451 | HOWTO (R_NDS32_SDA15S2, /* type */ | |
452 | 2, /* rightshift */ | |
453 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
454 | 15, /* bitsize */ | |
455 | FALSE, /* pc_relative */ | |
456 | 0, /* bitpos */ | |
457 | complain_overflow_signed, /* complain_on_overflow */ | |
458 | nds32_elf_sda15_reloc, /* special_function */ | |
459 | "R_NDS32_SDA15S2", /* name */ | |
460 | FALSE, /* partial_inplace */ | |
461 | 0x00007fff, /* src_mask */ | |
462 | 0x00007fff, /* dst_mask */ | |
463 | FALSE), /* pcrel_offset */ | |
464 | ||
465 | /* Small data area 15 bits offset. */ | |
466 | HOWTO (R_NDS32_SDA15S1, /* type */ | |
467 | 1, /* rightshift */ | |
468 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
469 | 15, /* bitsize */ | |
470 | FALSE, /* pc_relative */ | |
471 | 0, /* bitpos */ | |
472 | complain_overflow_signed, /* complain_on_overflow */ | |
473 | nds32_elf_sda15_reloc, /* special_function */ | |
474 | "R_NDS32_SDA15S1", /* name */ | |
475 | FALSE, /* partial_inplace */ | |
476 | 0x00007fff, /* src_mask */ | |
477 | 0x00007fff, /* dst_mask */ | |
478 | FALSE), /* pcrel_offset */ | |
479 | ||
480 | /* Small data area 15 bits offset. */ | |
481 | HOWTO (R_NDS32_SDA15S0, /* type */ | |
482 | 0, /* rightshift */ | |
483 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
484 | 15, /* bitsize */ | |
485 | FALSE, /* pc_relative */ | |
486 | 0, /* bitpos */ | |
487 | complain_overflow_signed, /* complain_on_overflow */ | |
488 | nds32_elf_sda15_reloc, /* special_function */ | |
489 | "R_NDS32_SDA15S0", /* name */ | |
490 | FALSE, /* partial_inplace */ | |
491 | 0x00007fff, /* src_mask */ | |
492 | 0x00007fff, /* dst_mask */ | |
493 | FALSE), /* pcrel_offset */ | |
494 | ||
495 | /* GNU extension to record C++ vtable hierarchy */ | |
496 | HOWTO (R_NDS32_GNU_VTINHERIT, /* type */ | |
497 | 0, /* rightshift */ | |
498 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
499 | 0, /* bitsize */ | |
500 | FALSE, /* pc_relative */ | |
501 | 0, /* bitpos */ | |
502 | complain_overflow_dont,/* complain_on_overflow */ | |
503 | NULL, /* special_function */ | |
504 | "R_NDS32_GNU_VTINHERIT", /* name */ | |
505 | FALSE, /* partial_inplace */ | |
506 | 0, /* src_mask */ | |
507 | 0, /* dst_mask */ | |
508 | FALSE), /* pcrel_offset */ | |
509 | ||
510 | /* GNU extension to record C++ vtable member usage */ | |
511 | HOWTO (R_NDS32_GNU_VTENTRY, /* type */ | |
512 | 0, /* rightshift */ | |
513 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
514 | 0, /* bitsize */ | |
515 | FALSE, /* pc_relative */ | |
516 | 0, /* bitpos */ | |
517 | complain_overflow_dont,/* complain_on_overflow */ | |
518 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
519 | "R_NDS32_GNU_VTENTRY", /* name */ | |
520 | FALSE, /* partial_inplace */ | |
521 | 0, /* src_mask */ | |
522 | 0, /* dst_mask */ | |
523 | FALSE), /* pcrel_offset */ | |
524 | ||
525 | /* A 16 bit absolute relocation. */ | |
526 | HOWTO (R_NDS32_16_RELA, /* type */ | |
527 | 0, /* rightshift */ | |
528 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
529 | 16, /* bitsize */ | |
530 | FALSE, /* pc_relative */ | |
531 | 0, /* bitpos */ | |
532 | complain_overflow_bitfield, /* complain_on_overflow */ | |
533 | bfd_elf_generic_reloc, /* special_function */ | |
534 | "R_NDS32_16_RELA", /* name */ | |
535 | FALSE, /* partial_inplace */ | |
536 | 0xffff, /* src_mask */ | |
537 | 0xffff, /* dst_mask */ | |
538 | FALSE), /* pcrel_offset */ | |
539 | ||
540 | /* A 32 bit absolute relocation. */ | |
541 | HOWTO (R_NDS32_32_RELA, /* type */ | |
542 | 0, /* rightshift */ | |
543 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
544 | 32, /* bitsize */ | |
545 | FALSE, /* pc_relative */ | |
546 | 0, /* bitpos */ | |
547 | complain_overflow_bitfield, /* complain_on_overflow */ | |
548 | bfd_elf_generic_reloc, /* special_function */ | |
549 | "R_NDS32_32_RELA", /* name */ | |
550 | FALSE, /* partial_inplace */ | |
551 | 0xffffffff, /* src_mask */ | |
552 | 0xffffffff, /* dst_mask */ | |
553 | FALSE), /* pcrel_offset */ | |
554 | ||
555 | /* A 20 bit address. */ | |
556 | HOWTO (R_NDS32_20_RELA, /* type */ | |
557 | 0, /* rightshift */ | |
558 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
559 | 20, /* bitsize */ | |
560 | FALSE, /* pc_relative */ | |
561 | 0, /* bitpos */ | |
562 | complain_overflow_signed, /* complain_on_overflow */ | |
563 | bfd_elf_generic_reloc, /* special_function */ | |
564 | "R_NDS32_20_RELA", /* name */ | |
565 | FALSE, /* partial_inplace */ | |
566 | 0xfffff, /* src_mask */ | |
567 | 0xfffff, /* dst_mask */ | |
568 | FALSE), /* pcrel_offset */ | |
569 | ||
570 | HOWTO (R_NDS32_9_PCREL_RELA, /* type */ | |
571 | 1, /* rightshift */ | |
572 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
573 | 8, /* bitsize */ | |
574 | TRUE, /* pc_relative */ | |
575 | 0, /* bitpos */ | |
576 | complain_overflow_signed, /* complain_on_overflow */ | |
577 | bfd_elf_generic_reloc, /* special_function */ | |
578 | "R_NDS32_9_PCREL_RELA",/* name */ | |
579 | FALSE, /* partial_inplace */ | |
580 | 0xff, /* src_mask */ | |
581 | 0xff, /* dst_mask */ | |
582 | TRUE), /* pcrel_offset */ | |
583 | ||
584 | /* A relative 15 bit relocation, right shifted by 1. */ | |
585 | HOWTO (R_NDS32_15_PCREL_RELA, /* type */ | |
586 | 1, /* rightshift */ | |
587 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
588 | 14, /* bitsize */ | |
589 | TRUE, /* pc_relative */ | |
590 | 0, /* bitpos */ | |
591 | complain_overflow_signed, /* complain_on_overflow */ | |
592 | bfd_elf_generic_reloc, /* special_function */ | |
593 | "R_NDS32_15_PCREL_RELA", /* name */ | |
594 | FALSE, /* partial_inplace */ | |
595 | 0x3fff, /* src_mask */ | |
596 | 0x3fff, /* dst_mask */ | |
597 | TRUE), /* pcrel_offset */ | |
598 | ||
599 | /* A relative 17 bit relocation, right shifted by 1. */ | |
600 | HOWTO (R_NDS32_17_PCREL_RELA, /* type */ | |
601 | 1, /* rightshift */ | |
602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
603 | 16, /* bitsize */ | |
604 | TRUE, /* pc_relative */ | |
605 | 0, /* bitpos */ | |
606 | complain_overflow_signed, /* complain_on_overflow */ | |
607 | bfd_elf_generic_reloc, /* special_function */ | |
608 | "R_NDS32_17_PCREL_RELA", /* name */ | |
609 | FALSE, /* partial_inplace */ | |
610 | 0xffff, /* src_mask */ | |
611 | 0xffff, /* dst_mask */ | |
612 | TRUE), /* pcrel_offset */ | |
613 | ||
614 | /* A relative 25 bit relocation, right shifted by 2. */ | |
615 | HOWTO (R_NDS32_25_PCREL_RELA, /* type */ | |
616 | 1, /* rightshift */ | |
617 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
618 | 24, /* bitsize */ | |
619 | TRUE, /* pc_relative */ | |
620 | 0, /* bitpos */ | |
621 | complain_overflow_signed, /* complain_on_overflow */ | |
622 | bfd_elf_generic_reloc, /* special_function */ | |
623 | "R_NDS32_25_PCREL_RELA", /* name */ | |
624 | FALSE, /* partial_inplace */ | |
625 | 0xffffff, /* src_mask */ | |
626 | 0xffffff, /* dst_mask */ | |
627 | TRUE), /* pcrel_offset */ | |
628 | ||
629 | /* High 20 bits of address when lower 16 is or'd in. */ | |
630 | HOWTO (R_NDS32_HI20_RELA, /* type */ | |
631 | 12, /* rightshift */ | |
632 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
633 | 20, /* bitsize */ | |
634 | FALSE, /* pc_relative */ | |
635 | 0, /* bitpos */ | |
636 | complain_overflow_dont,/* complain_on_overflow */ | |
637 | bfd_elf_generic_reloc, /* special_function */ | |
638 | "R_NDS32_HI20_RELA", /* name */ | |
639 | FALSE, /* partial_inplace */ | |
640 | 0x000fffff, /* src_mask */ | |
641 | 0x000fffff, /* dst_mask */ | |
642 | FALSE), /* pcrel_offset */ | |
643 | ||
644 | /* Lower 12 bits of address. */ | |
645 | HOWTO (R_NDS32_LO12S3_RELA, /* type */ | |
646 | 3, /* rightshift */ | |
647 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
648 | 9, /* bitsize */ | |
649 | FALSE, /* pc_relative */ | |
650 | 0, /* bitpos */ | |
651 | complain_overflow_dont,/* complain_on_overflow */ | |
652 | bfd_elf_generic_reloc, /* special_function */ | |
653 | "R_NDS32_LO12S3_RELA", /* name */ | |
654 | FALSE, /* partial_inplace */ | |
655 | 0x000001ff, /* src_mask */ | |
656 | 0x000001ff, /* dst_mask */ | |
657 | FALSE), /* pcrel_offset */ | |
658 | ||
659 | /* Lower 12 bits of address. */ | |
660 | HOWTO (R_NDS32_LO12S2_RELA, /* type */ | |
661 | 2, /* rightshift */ | |
662 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
663 | 10, /* bitsize */ | |
664 | FALSE, /* pc_relative */ | |
665 | 0, /* bitpos */ | |
666 | complain_overflow_dont,/* complain_on_overflow */ | |
667 | bfd_elf_generic_reloc, /* special_function */ | |
668 | "R_NDS32_LO12S2_RELA", /* name */ | |
669 | FALSE, /* partial_inplace */ | |
670 | 0x000003ff, /* src_mask */ | |
671 | 0x000003ff, /* dst_mask */ | |
672 | FALSE), /* pcrel_offset */ | |
673 | ||
674 | /* Lower 12 bits of address. */ | |
675 | HOWTO (R_NDS32_LO12S1_RELA, /* type */ | |
676 | 1, /* rightshift */ | |
677 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
678 | 11, /* bitsize */ | |
679 | FALSE, /* pc_relative */ | |
680 | 0, /* bitpos */ | |
681 | complain_overflow_dont,/* complain_on_overflow */ | |
682 | bfd_elf_generic_reloc, /* special_function */ | |
683 | "R_NDS32_LO12S1_RELA", /* name */ | |
684 | FALSE, /* partial_inplace */ | |
685 | 0x000007ff, /* src_mask */ | |
686 | 0x000007ff, /* dst_mask */ | |
687 | FALSE), /* pcrel_offset */ | |
688 | ||
689 | /* Lower 12 bits of address. */ | |
690 | HOWTO (R_NDS32_LO12S0_RELA, /* type */ | |
691 | 0, /* rightshift */ | |
692 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
693 | 12, /* bitsize */ | |
694 | FALSE, /* pc_relative */ | |
695 | 0, /* bitpos */ | |
696 | complain_overflow_dont,/* complain_on_overflow */ | |
697 | bfd_elf_generic_reloc, /* special_function */ | |
698 | "R_NDS32_LO12S0_RELA", /* name */ | |
699 | FALSE, /* partial_inplace */ | |
700 | 0x00000fff, /* src_mask */ | |
701 | 0x00000fff, /* dst_mask */ | |
702 | FALSE), /* pcrel_offset */ | |
703 | ||
704 | /* Small data area 15 bits offset. */ | |
705 | HOWTO (R_NDS32_SDA15S3_RELA, /* type */ | |
706 | 3, /* rightshift */ | |
707 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
708 | 15, /* bitsize */ | |
709 | FALSE, /* pc_relative */ | |
710 | 0, /* bitpos */ | |
711 | complain_overflow_signed, /* complain_on_overflow */ | |
712 | bfd_elf_generic_reloc, /* special_function */ | |
713 | "R_NDS32_SDA15S3_RELA",/* name */ | |
714 | FALSE, /* partial_inplace */ | |
715 | 0x00007fff, /* src_mask */ | |
716 | 0x00007fff, /* dst_mask */ | |
717 | FALSE), /* pcrel_offset */ | |
718 | ||
719 | /* Small data area 15 bits offset. */ | |
720 | HOWTO (R_NDS32_SDA15S2_RELA, /* type */ | |
721 | 2, /* rightshift */ | |
722 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
723 | 15, /* bitsize */ | |
724 | FALSE, /* pc_relative */ | |
725 | 0, /* bitpos */ | |
726 | complain_overflow_signed, /* complain_on_overflow */ | |
727 | bfd_elf_generic_reloc, /* special_function */ | |
728 | "R_NDS32_SDA15S2_RELA",/* name */ | |
729 | FALSE, /* partial_inplace */ | |
730 | 0x00007fff, /* src_mask */ | |
731 | 0x00007fff, /* dst_mask */ | |
732 | FALSE), /* pcrel_offset */ | |
733 | ||
734 | HOWTO (R_NDS32_SDA15S1_RELA, /* type */ | |
735 | 1, /* rightshift */ | |
736 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
737 | 15, /* bitsize */ | |
738 | FALSE, /* pc_relative */ | |
739 | 0, /* bitpos */ | |
740 | complain_overflow_signed, /* complain_on_overflow */ | |
741 | bfd_elf_generic_reloc, /* special_function */ | |
742 | "R_NDS32_SDA15S1_RELA",/* name */ | |
743 | FALSE, /* partial_inplace */ | |
744 | 0x00007fff, /* src_mask */ | |
745 | 0x00007fff, /* dst_mask */ | |
746 | FALSE), /* pcrel_offset */ | |
747 | ||
748 | HOWTO (R_NDS32_SDA15S0_RELA, /* type */ | |
749 | 0, /* rightshift */ | |
750 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
751 | 15, /* bitsize */ | |
752 | FALSE, /* pc_relative */ | |
753 | 0, /* bitpos */ | |
754 | complain_overflow_signed, /* complain_on_overflow */ | |
755 | bfd_elf_generic_reloc, /* special_function */ | |
756 | "R_NDS32_SDA15S0_RELA",/* name */ | |
757 | FALSE, /* partial_inplace */ | |
758 | 0x00007fff, /* src_mask */ | |
759 | 0x00007fff, /* dst_mask */ | |
760 | FALSE), /* pcrel_offset */ | |
761 | ||
762 | /* GNU extension to record C++ vtable hierarchy */ | |
763 | HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */ | |
764 | 0, /* rightshift */ | |
765 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
766 | 0, /* bitsize */ | |
767 | FALSE, /* pc_relative */ | |
768 | 0, /* bitpos */ | |
769 | complain_overflow_dont,/* complain_on_overflow */ | |
770 | NULL, /* special_function */ | |
771 | "R_NDS32_RELA_GNU_VTINHERIT", /* name */ | |
772 | FALSE, /* partial_inplace */ | |
773 | 0, /* src_mask */ | |
774 | 0, /* dst_mask */ | |
775 | FALSE), /* pcrel_offset */ | |
776 | ||
777 | /* GNU extension to record C++ vtable member usage */ | |
778 | HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */ | |
779 | 0, /* rightshift */ | |
780 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
781 | 0, /* bitsize */ | |
782 | FALSE, /* pc_relative */ | |
783 | 0, /* bitpos */ | |
784 | complain_overflow_dont,/* complain_on_overflow */ | |
785 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
786 | "R_NDS32_RELA_GNU_VTENTRY", /* name */ | |
787 | FALSE, /* partial_inplace */ | |
788 | 0, /* src_mask */ | |
789 | 0, /* dst_mask */ | |
790 | FALSE), /* pcrel_offset */ | |
791 | ||
792 | /* Like R_NDS32_20, but referring to the GOT table entry for | |
793 | the symbol. */ | |
794 | HOWTO (R_NDS32_GOT20, /* type */ | |
795 | 0, /* rightshift */ | |
796 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
797 | 20, /* bitsize */ | |
798 | FALSE, /* pc_relative */ | |
799 | 0, /* bitpos */ | |
800 | complain_overflow_signed, /* complain_on_overflow */ | |
801 | bfd_elf_generic_reloc, /* special_function */ | |
802 | "R_NDS32_GOT20", /* name */ | |
803 | FALSE, /* partial_inplace */ | |
804 | 0xfffff, /* src_mask */ | |
805 | 0xfffff, /* dst_mask */ | |
806 | FALSE), /* pcrel_offset */ | |
807 | ||
808 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
809 | entry for the symbol. */ | |
810 | HOWTO (R_NDS32_25_PLTREL, /* type */ | |
811 | 1, /* rightshift */ | |
812 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
813 | 24, /* bitsize */ | |
814 | TRUE, /* pc_relative */ | |
815 | 0, /* bitpos */ | |
816 | complain_overflow_signed, /* complain_on_overflow */ | |
817 | bfd_elf_generic_reloc, /* special_function */ | |
818 | "R_NDS32_25_PLTREL", /* name */ | |
819 | FALSE, /* partial_inplace */ | |
820 | 0xffffff, /* src_mask */ | |
821 | 0xffffff, /* dst_mask */ | |
822 | TRUE), /* pcrel_offset */ | |
823 | ||
824 | /* This is used only by the dynamic linker. The symbol should exist | |
825 | both in the object being run and in some shared library. The | |
826 | dynamic linker copies the data addressed by the symbol from the | |
827 | shared library into the object, because the object being | |
828 | run has to have the data at some particular address. */ | |
829 | HOWTO (R_NDS32_COPY, /* type */ | |
830 | 0, /* rightshift */ | |
831 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
832 | 32, /* bitsize */ | |
833 | FALSE, /* pc_relative */ | |
834 | 0, /* bitpos */ | |
835 | complain_overflow_bitfield, /* complain_on_overflow */ | |
836 | bfd_elf_generic_reloc, /* special_function */ | |
837 | "R_NDS32_COPY", /* name */ | |
838 | FALSE, /* partial_inplace */ | |
839 | 0xffffffff, /* src_mask */ | |
840 | 0xffffffff, /* dst_mask */ | |
841 | FALSE), /* pcrel_offset */ | |
842 | ||
843 | /* Like R_NDS32_20, but used when setting global offset table | |
844 | entries. */ | |
845 | HOWTO (R_NDS32_GLOB_DAT, /* type */ | |
846 | 0, /* rightshift */ | |
847 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
848 | 32, /* bitsize */ | |
849 | FALSE, /* pc_relative */ | |
850 | 0, /* bitpos */ | |
851 | complain_overflow_bitfield, /* complain_on_overflow */ | |
852 | bfd_elf_generic_reloc, /* special_function */ | |
853 | "R_NDS32_GLOB_DAT", /* name */ | |
854 | FALSE, /* partial_inplace */ | |
855 | 0xffffffff, /* src_mask */ | |
856 | 0xffffffff, /* dst_mask */ | |
857 | FALSE), /* pcrel_offset */ | |
858 | ||
859 | /* Marks a procedure linkage table entry for a symbol. */ | |
860 | HOWTO (R_NDS32_JMP_SLOT, /* type */ | |
861 | 0, /* rightshift */ | |
862 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
863 | 32, /* bitsize */ | |
864 | FALSE, /* pc_relative */ | |
865 | 0, /* bitpos */ | |
866 | complain_overflow_bitfield, /* complain_on_overflow */ | |
867 | bfd_elf_generic_reloc, /* special_function */ | |
868 | "R_NDS32_JMP_SLOT", /* name */ | |
869 | FALSE, /* partial_inplace */ | |
870 | 0xffffffff, /* src_mask */ | |
871 | 0xffffffff, /* dst_mask */ | |
872 | FALSE), /* pcrel_offset */ | |
873 | ||
874 | /* Used only by the dynamic linker. When the object is run, this | |
875 | longword is set to the load address of the object, plus the | |
876 | addend. */ | |
877 | HOWTO (R_NDS32_RELATIVE, /* type */ | |
878 | 0, /* rightshift */ | |
879 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
880 | 32, /* bitsize */ | |
881 | FALSE, /* pc_relative */ | |
882 | 0, /* bitpos */ | |
883 | complain_overflow_bitfield, /* complain_on_overflow */ | |
884 | bfd_elf_generic_reloc, /* special_function */ | |
885 | "R_NDS32_RELATIVE", /* name */ | |
886 | FALSE, /* partial_inplace */ | |
887 | 0xffffffff, /* src_mask */ | |
888 | 0xffffffff, /* dst_mask */ | |
889 | FALSE), /* pcrel_offset */ | |
890 | ||
891 | HOWTO (R_NDS32_GOTOFF, /* type */ | |
892 | 0, /* rightshift */ | |
893 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
894 | 20, /* bitsize */ | |
895 | FALSE, /* pc_relative */ | |
896 | 0, /* bitpos */ | |
897 | complain_overflow_signed, /* complain_on_overflow */ | |
898 | bfd_elf_generic_reloc, /* special_function */ | |
899 | "R_NDS32_GOTOFF", /* name */ | |
900 | FALSE, /* partial_inplace */ | |
901 | 0xfffff, /* src_mask */ | |
902 | 0xfffff, /* dst_mask */ | |
903 | FALSE), /* pcrel_offset */ | |
904 | ||
905 | /* An PC Relative 20-bit relocation used when setting PIC offset | |
906 | table register. */ | |
907 | HOWTO (R_NDS32_GOTPC20, /* type */ | |
908 | 0, /* rightshift */ | |
909 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
910 | 20, /* bitsize */ | |
911 | TRUE, /* pc_relative */ | |
912 | 0, /* bitpos */ | |
913 | complain_overflow_signed, /* complain_on_overflow */ | |
914 | bfd_elf_generic_reloc, /* special_function */ | |
915 | "R_NDS32_GOTPC20", /* name */ | |
916 | FALSE, /* partial_inplace */ | |
917 | 0xfffff, /* src_mask */ | |
918 | 0xfffff, /* dst_mask */ | |
919 | TRUE), /* pcrel_offset */ | |
920 | ||
921 | /* Like R_NDS32_HI20, but referring to the GOT table entry for | |
922 | the symbol. */ | |
923 | HOWTO (R_NDS32_GOT_HI20, /* type */ | |
924 | 12, /* rightshift */ | |
925 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
926 | 20, /* bitsize */ | |
927 | FALSE, /* pc_relative */ | |
928 | 0, /* bitpos */ | |
929 | complain_overflow_dont,/* complain_on_overflow */ | |
930 | bfd_elf_generic_reloc, /* special_function */ | |
931 | "R_NDS32_GOT_HI20", /* name */ | |
932 | FALSE, /* partial_inplace */ | |
933 | 0x000fffff, /* src_mask */ | |
934 | 0x000fffff, /* dst_mask */ | |
935 | FALSE), /* pcrel_offset */ | |
936 | HOWTO (R_NDS32_GOT_LO12, /* type */ | |
937 | 0, /* rightshift */ | |
938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
939 | 12, /* bitsize */ | |
940 | FALSE, /* pc_relative */ | |
941 | 0, /* bitpos */ | |
942 | complain_overflow_dont,/* complain_on_overflow */ | |
943 | bfd_elf_generic_reloc, /* special_function */ | |
944 | "R_NDS32_GOT_LO12", /* name */ | |
945 | FALSE, /* partial_inplace */ | |
946 | 0x00000fff, /* src_mask */ | |
947 | 0x00000fff, /* dst_mask */ | |
948 | FALSE), /* pcrel_offset */ | |
949 | ||
950 | /* An PC Relative relocation used when setting PIC offset table register. | |
951 | Like R_NDS32_HI20, but referring to the GOT table entry for | |
952 | the symbol. */ | |
953 | HOWTO (R_NDS32_GOTPC_HI20, /* type */ | |
954 | 12, /* rightshift */ | |
955 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
956 | 20, /* bitsize */ | |
957 | FALSE, /* pc_relative */ | |
958 | 0, /* bitpos */ | |
959 | complain_overflow_dont,/* complain_on_overflow */ | |
960 | bfd_elf_generic_reloc, /* special_function */ | |
961 | "R_NDS32_GOTPC_HI20", /* name */ | |
962 | FALSE, /* partial_inplace */ | |
963 | 0x000fffff, /* src_mask */ | |
964 | 0x000fffff, /* dst_mask */ | |
965 | TRUE), /* pcrel_offset */ | |
966 | HOWTO (R_NDS32_GOTPC_LO12, /* type */ | |
967 | 0, /* rightshift */ | |
968 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
969 | 12, /* bitsize */ | |
970 | FALSE, /* pc_relative */ | |
971 | 0, /* bitpos */ | |
972 | complain_overflow_dont, /* complain_on_overflow */ | |
973 | bfd_elf_generic_reloc, /* special_function */ | |
974 | "R_NDS32_GOTPC_LO12", /* name */ | |
975 | FALSE, /* partial_inplace */ | |
976 | 0x00000fff, /* src_mask */ | |
977 | 0x00000fff, /* dst_mask */ | |
978 | TRUE), /* pcrel_offset */ | |
979 | ||
980 | HOWTO (R_NDS32_GOTOFF_HI20, /* type */ | |
981 | 12, /* rightshift */ | |
982 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
983 | 20, /* bitsize */ | |
984 | FALSE, /* pc_relative */ | |
985 | 0, /* bitpos */ | |
986 | complain_overflow_dont,/* complain_on_overflow */ | |
987 | bfd_elf_generic_reloc, /* special_function */ | |
988 | "R_NDS32_GOTOFF_HI20", /* name */ | |
989 | FALSE, /* partial_inplace */ | |
990 | 0x000fffff, /* src_mask */ | |
991 | 0x000fffff, /* dst_mask */ | |
992 | FALSE), /* pcrel_offset */ | |
993 | HOWTO (R_NDS32_GOTOFF_LO12, /* type */ | |
994 | 0, /* rightshift */ | |
995 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
996 | 12, /* bitsize */ | |
997 | FALSE, /* pc_relative */ | |
998 | 0, /* bitpos */ | |
999 | complain_overflow_dont,/* complain_on_overflow */ | |
1000 | bfd_elf_generic_reloc, /* special_function */ | |
1001 | "R_NDS32_GOTOFF_LO12", /* name */ | |
1002 | FALSE, /* partial_inplace */ | |
1003 | 0x00000fff, /* src_mask */ | |
1004 | 0x00000fff, /* dst_mask */ | |
1005 | FALSE), /* pcrel_offset */ | |
1006 | ||
1007 | /* Alignment hint for relaxable instruction. This is used with | |
1008 | R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2 | |
1009 | in order to make next label aligned on word boundary. */ | |
1010 | HOWTO (R_NDS32_INSN16, /* type */ | |
1011 | 0, /* rightshift */ | |
1012 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1013 | 32, /* bitsize */ | |
1014 | FALSE, /* pc_relative */ | |
1015 | 0, /* bitpos */ | |
1016 | complain_overflow_dont,/* complain_on_overflow */ | |
1017 | nds32_elf_ignore_reloc,/* special_function */ | |
1018 | "R_NDS32_INSN16", /* name */ | |
1019 | FALSE, /* partial_inplace */ | |
1020 | 0x00000fff, /* src_mask */ | |
1021 | 0x00000fff, /* dst_mask */ | |
1022 | FALSE), /* pcrel_offset */ | |
1023 | ||
1024 | /* Alignment hint for label. */ | |
1025 | HOWTO (R_NDS32_LABEL, /* type */ | |
1026 | 0, /* rightshift */ | |
1027 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1028 | 32, /* bitsize */ | |
1029 | FALSE, /* pc_relative */ | |
1030 | 0, /* bitpos */ | |
1031 | complain_overflow_dont,/* complain_on_overflow */ | |
1032 | nds32_elf_ignore_reloc,/* special_function */ | |
1033 | "R_NDS32_LABEL", /* name */ | |
1034 | FALSE, /* partial_inplace */ | |
1035 | 0xffffffff, /* src_mask */ | |
1036 | 0xffffffff, /* dst_mask */ | |
1037 | FALSE), /* pcrel_offset */ | |
1038 | ||
1039 | /* Relax hint for unconditional call sequence */ | |
1040 | HOWTO (R_NDS32_LONGCALL1, /* type */ | |
1041 | 0, /* rightshift */ | |
1042 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1043 | 32, /* bitsize */ | |
1044 | FALSE, /* pc_relative */ | |
1045 | 0, /* bitpos */ | |
1046 | complain_overflow_dont,/* complain_on_overflow */ | |
1047 | nds32_elf_ignore_reloc,/* special_function */ | |
1048 | "R_NDS32_LONGCALL1", /* name */ | |
1049 | FALSE, /* partial_inplace */ | |
1050 | 0xffffffff, /* src_mask */ | |
1051 | 0xffffffff, /* dst_mask */ | |
1052 | FALSE), /* pcrel_offset */ | |
1053 | ||
1054 | /* Relax hint for conditional call sequence. */ | |
1055 | HOWTO (R_NDS32_LONGCALL2, /* type */ | |
1056 | 0, /* rightshift */ | |
1057 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1058 | 32, /* bitsize */ | |
1059 | FALSE, /* pc_relative */ | |
1060 | 0, /* bitpos */ | |
1061 | complain_overflow_dont,/* complain_on_overflow */ | |
1062 | nds32_elf_ignore_reloc,/* special_function */ | |
1063 | "R_NDS32_LONGCALL2", /* name */ | |
1064 | FALSE, /* partial_inplace */ | |
1065 | 0xffffffff, /* src_mask */ | |
1066 | 0xffffffff, /* dst_mask */ | |
1067 | FALSE), /* pcrel_offset */ | |
1068 | ||
1069 | /* Relax hint for conditional call sequence. */ | |
1070 | HOWTO (R_NDS32_LONGCALL3, /* type */ | |
1071 | 0, /* rightshift */ | |
1072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1073 | 32, /* bitsize */ | |
1074 | FALSE, /* pc_relative */ | |
1075 | 0, /* bitpos */ | |
1076 | complain_overflow_dont,/* complain_on_overflow */ | |
1077 | nds32_elf_ignore_reloc,/* special_function */ | |
1078 | "R_NDS32_LONGCALL3", /* name */ | |
1079 | FALSE, /* partial_inplace */ | |
1080 | 0xffffffff, /* src_mask */ | |
1081 | 0xffffffff, /* dst_mask */ | |
1082 | FALSE), /* pcrel_offset */ | |
1083 | ||
1084 | /* Relax hint for unconditional branch sequence. */ | |
1085 | HOWTO (R_NDS32_LONGJUMP1, /* type */ | |
1086 | 0, /* rightshift */ | |
1087 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 32, /* bitsize */ | |
1089 | FALSE, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
1091 | complain_overflow_dont,/* complain_on_overflow */ | |
1092 | nds32_elf_ignore_reloc,/* special_function */ | |
1093 | "R_NDS32_LONGJUMP1", /* name */ | |
1094 | FALSE, /* partial_inplace */ | |
1095 | 0xffffffff, /* src_mask */ | |
1096 | 0xffffffff, /* dst_mask */ | |
1097 | FALSE), /* pcrel_offset */ | |
1098 | ||
1099 | /* Relax hint for conditional branch sequence. */ | |
1100 | HOWTO (R_NDS32_LONGJUMP2, /* type */ | |
1101 | 0, /* rightshift */ | |
1102 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1103 | 32, /* bitsize */ | |
1104 | FALSE, /* pc_relative */ | |
1105 | 0, /* bitpos */ | |
1106 | complain_overflow_dont,/* complain_on_overflow */ | |
1107 | nds32_elf_ignore_reloc,/* special_function */ | |
1108 | "R_NDS32_LONGJUMP2", /* name */ | |
1109 | FALSE, /* partial_inplace */ | |
1110 | 0xffffffff, /* src_mask */ | |
1111 | 0xffffffff, /* dst_mask */ | |
1112 | FALSE), /* pcrel_offset */ | |
1113 | ||
1114 | /* Relax hint for conditional branch sequence. */ | |
1115 | HOWTO (R_NDS32_LONGJUMP3, /* type */ | |
1116 | 0, /* rightshift */ | |
1117 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1118 | 32, /* bitsize */ | |
1119 | FALSE, /* pc_relative */ | |
1120 | 0, /* bitpos */ | |
1121 | complain_overflow_dont,/* complain_on_overflow */ | |
1122 | nds32_elf_ignore_reloc,/* special_function */ | |
1123 | "R_NDS32_LONGJUMP3", /* name */ | |
1124 | FALSE, /* partial_inplace */ | |
1125 | 0xffffffff, /* src_mask */ | |
1126 | 0xffffffff, /* dst_mask */ | |
1127 | FALSE), /* pcrel_offset */ | |
1128 | ||
1129 | /* Relax hint for load/store sequence. */ | |
1130 | HOWTO (R_NDS32_LOADSTORE, /* type */ | |
1131 | 0, /* rightshift */ | |
1132 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1133 | 32, /* bitsize */ | |
1134 | FALSE, /* pc_relative */ | |
1135 | 0, /* bitpos */ | |
1136 | complain_overflow_dont,/* complain_on_overflow */ | |
1137 | nds32_elf_ignore_reloc,/* special_function */ | |
1138 | "R_NDS32_LOADSTORE", /* name */ | |
1139 | FALSE, /* partial_inplace */ | |
1140 | 0xffffffff, /* src_mask */ | |
1141 | 0xffffffff, /* dst_mask */ | |
1142 | FALSE), /* pcrel_offset */ | |
1143 | ||
1144 | /* Relax hint for load/store sequence. */ | |
1145 | HOWTO (R_NDS32_9_FIXED_RELA, /* type */ | |
1146 | 0, /* rightshift */ | |
1147 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1148 | 16, /* bitsize */ | |
1149 | FALSE, /* pc_relative */ | |
1150 | 0, /* bitpos */ | |
1151 | complain_overflow_dont,/* complain_on_overflow */ | |
1152 | nds32_elf_ignore_reloc,/* special_function */ | |
1153 | "R_NDS32_9_FIXED_RELA",/* name */ | |
1154 | FALSE, /* partial_inplace */ | |
1155 | 0x000000ff, /* src_mask */ | |
1156 | 0x000000ff, /* dst_mask */ | |
1157 | FALSE), /* pcrel_offset */ | |
1158 | ||
1159 | /* Relax hint for load/store sequence. */ | |
1160 | HOWTO (R_NDS32_15_FIXED_RELA, /* type */ | |
1161 | 0, /* rightshift */ | |
1162 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1163 | 32, /* bitsize */ | |
1164 | FALSE, /* pc_relative */ | |
1165 | 0, /* bitpos */ | |
1166 | complain_overflow_dont,/* complain_on_overflow */ | |
1167 | nds32_elf_ignore_reloc,/* special_function */ | |
1168 | "R_NDS32_15_FIXED_RELA", /* name */ | |
1169 | FALSE, /* partial_inplace */ | |
1170 | 0x00003fff, /* src_mask */ | |
1171 | 0x00003fff, /* dst_mask */ | |
1172 | FALSE), /* pcrel_offset */ | |
1173 | ||
1174 | /* Relax hint for load/store sequence. */ | |
1175 | HOWTO (R_NDS32_17_FIXED_RELA, /* type */ | |
1176 | 0, /* rightshift */ | |
1177 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1178 | 32, /* bitsize */ | |
1179 | FALSE, /* pc_relative */ | |
1180 | 0, /* bitpos */ | |
1181 | complain_overflow_dont,/* complain_on_overflow */ | |
1182 | nds32_elf_ignore_reloc,/* special_function */ | |
1183 | "R_NDS32_17_FIXED_RELA", /* name */ | |
1184 | FALSE, /* partial_inplace */ | |
1185 | 0x0000ffff, /* src_mask */ | |
1186 | 0x0000ffff, /* dst_mask */ | |
1187 | FALSE), /* pcrel_offset */ | |
1188 | ||
1189 | /* Relax hint for load/store sequence. */ | |
1190 | HOWTO (R_NDS32_25_FIXED_RELA, /* type */ | |
1191 | 0, /* rightshift */ | |
1192 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1193 | 32, /* bitsize */ | |
1194 | FALSE, /* pc_relative */ | |
1195 | 0, /* bitpos */ | |
1196 | complain_overflow_dont,/* complain_on_overflow */ | |
1197 | nds32_elf_ignore_reloc,/* special_function */ | |
1198 | "R_NDS32_25_FIXED_RELA", /* name */ | |
1199 | FALSE, /* partial_inplace */ | |
1200 | 0x00ffffff, /* src_mask */ | |
1201 | 0x00ffffff, /* dst_mask */ | |
1202 | FALSE), /* pcrel_offset */ | |
1203 | ||
1204 | /* High 20 bits of PLT symbol offset relative to PC. */ | |
1205 | HOWTO (R_NDS32_PLTREL_HI20, /* type */ | |
1206 | 12, /* rightshift */ | |
1207 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1208 | 20, /* bitsize */ | |
1209 | FALSE, /* pc_relative */ | |
1210 | 0, /* bitpos */ | |
1211 | complain_overflow_dont,/* complain_on_overflow */ | |
1212 | bfd_elf_generic_reloc, /* special_function */ | |
1213 | "R_NDS32_PLTREL_HI20", /* name */ | |
1214 | FALSE, /* partial_inplace */ | |
1215 | 0x000fffff, /* src_mask */ | |
1216 | 0x000fffff, /* dst_mask */ | |
1217 | FALSE), /* pcrel_offset */ | |
1218 | ||
1219 | /* Low 12 bits of PLT symbol offset relative to PC. */ | |
1220 | HOWTO (R_NDS32_PLTREL_LO12, /* type */ | |
1221 | 0, /* rightshift */ | |
1222 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1223 | 12, /* bitsize */ | |
1224 | FALSE, /* pc_relative */ | |
1225 | 0, /* bitpos */ | |
1226 | complain_overflow_dont,/* complain_on_overflow */ | |
1227 | bfd_elf_generic_reloc, /* special_function */ | |
1228 | "R_NDS32_PLTREL_LO12", /* name */ | |
1229 | FALSE, /* partial_inplace */ | |
1230 | 0x00000fff, /* src_mask */ | |
1231 | 0x00000fff, /* dst_mask */ | |
1232 | FALSE), /* pcrel_offset */ | |
1233 | ||
1234 | /* High 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1235 | HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */ | |
1236 | 12, /* rightshift */ | |
1237 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1238 | 20, /* bitsize */ | |
1239 | FALSE, /* pc_relative */ | |
1240 | 0, /* bitpos */ | |
1241 | complain_overflow_dont,/* complain_on_overflow */ | |
1242 | bfd_elf_generic_reloc, /* special_function */ | |
1243 | "R_NDS32_PLT_GOTREL_HI20", /* name */ | |
1244 | FALSE, /* partial_inplace */ | |
1245 | 0x000fffff, /* src_mask */ | |
1246 | 0x000fffff, /* dst_mask */ | |
1247 | FALSE), /* pcrel_offset */ | |
1248 | ||
1249 | /* Low 12 bits of PLT symbol offset relative to GOT (GP). */ | |
1250 | HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */ | |
1251 | 0, /* rightshift */ | |
1252 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1253 | 12, /* bitsize */ | |
1254 | FALSE, /* pc_relative */ | |
1255 | 0, /* bitpos */ | |
1256 | complain_overflow_dont,/* complain_on_overflow */ | |
1257 | bfd_elf_generic_reloc, /* special_function */ | |
1258 | "R_NDS32_PLT_GOTREL_LO12", /* name */ | |
1259 | FALSE, /* partial_inplace */ | |
1260 | 0x00000fff, /* src_mask */ | |
1261 | 0x00000fff, /* dst_mask */ | |
1262 | FALSE), /* pcrel_offset */ | |
1263 | ||
1264 | /* Small data area 12 bits offset. */ | |
1265 | HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */ | |
1266 | 2, /* rightshift */ | |
1267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1268 | 12, /* bitsize */ | |
1269 | FALSE, /* pc_relative */ | |
1270 | 0, /* bitpos */ | |
1271 | complain_overflow_signed, /* complain_on_overflow */ | |
1272 | bfd_elf_generic_reloc, /* special_function */ | |
1273 | "R_NDS32_SDA12S2_DP_RELA", /* name */ | |
1274 | FALSE, /* partial_inplace */ | |
1275 | 0x00000fff, /* src_mask */ | |
1276 | 0x00000fff, /* dst_mask */ | |
1277 | FALSE), /* pcrel_offset */ | |
1278 | ||
1279 | /* Small data area 12 bits offset. */ | |
1280 | HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */ | |
1281 | 2, /* rightshift */ | |
1282 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1283 | 12, /* bitsize */ | |
1284 | FALSE, /* pc_relative */ | |
1285 | 0, /* bitpos */ | |
1286 | complain_overflow_signed, /* complain_on_overflow */ | |
1287 | bfd_elf_generic_reloc, /* special_function */ | |
1288 | "R_NDS32_SDA12S2_SP_RELA", /* name */ | |
1289 | FALSE, /* partial_inplace */ | |
1290 | 0x00000fff, /* src_mask */ | |
1291 | 0x00000fff, /* dst_mask */ | |
1292 | FALSE), /* pcrel_offset */ | |
1293 | /* Lower 12 bits of address. */ | |
1294 | ||
1295 | HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */ | |
1296 | 2, /* rightshift */ | |
1297 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1298 | 10, /* bitsize */ | |
1299 | FALSE, /* pc_relative */ | |
1300 | 0, /* bitpos */ | |
1301 | complain_overflow_dont,/* complain_on_overflow */ | |
1302 | bfd_elf_generic_reloc, /* special_function */ | |
1303 | "R_NDS32_LO12S2_DP_RELA", /* name */ | |
1304 | FALSE, /* partial_inplace */ | |
1305 | 0x000003ff, /* src_mask */ | |
1306 | 0x000003ff, /* dst_mask */ | |
1307 | FALSE), /* pcrel_offset */ | |
1308 | ||
1309 | /* Lower 12 bits of address. */ | |
1310 | HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */ | |
1311 | 2, /* rightshift */ | |
1312 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1313 | 10, /* bitsize */ | |
1314 | FALSE, /* pc_relative */ | |
1315 | 0, /* bitpos */ | |
1316 | complain_overflow_dont,/* complain_on_overflow */ | |
1317 | bfd_elf_generic_reloc, /* special_function */ | |
1318 | "R_NDS32_LO12S2_SP_RELA", /* name */ | |
1319 | FALSE, /* partial_inplace */ | |
1320 | 0x000003ff, /* src_mask */ | |
1321 | 0x000003ff, /* dst_mask */ | |
1322 | FALSE), /* pcrel_offset */ | |
1323 | /* Lower 12 bits of address. Special identity for or case. */ | |
1324 | HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */ | |
1325 | 0, /* rightshift */ | |
1326 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1327 | 12, /* bitsize */ | |
1328 | FALSE, /* pc_relative */ | |
1329 | 0, /* bitpos */ | |
1330 | complain_overflow_dont,/* complain_on_overflow */ | |
1331 | bfd_elf_generic_reloc, /* special_function */ | |
1332 | "R_NDS32_LO12S0_ORI_RELA", /* name */ | |
1333 | FALSE, /* partial_inplace */ | |
1334 | 0x00000fff, /* src_mask */ | |
1335 | 0x00000fff, /* dst_mask */ | |
1336 | FALSE), /* pcrel_offset */ | |
1337 | /* Small data area 19 bits offset. */ | |
1338 | HOWTO (R_NDS32_SDA16S3_RELA, /* type */ | |
1339 | 3, /* rightshift */ | |
1340 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1341 | 16, /* bitsize */ | |
1342 | FALSE, /* pc_relative */ | |
1343 | 0, /* bitpos */ | |
1344 | complain_overflow_signed, /* complain_on_overflow */ | |
1345 | bfd_elf_generic_reloc, /* special_function */ | |
1346 | "R_NDS32_SDA16S3_RELA",/* name */ | |
1347 | FALSE, /* partial_inplace */ | |
1348 | 0x0000ffff, /* src_mask */ | |
1349 | 0x0000ffff, /* dst_mask */ | |
1350 | FALSE), /* pcrel_offset */ | |
1351 | ||
1352 | /* Small data area 15 bits offset. */ | |
1353 | HOWTO (R_NDS32_SDA17S2_RELA, /* type */ | |
1354 | 2, /* rightshift */ | |
1355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1356 | 17, /* bitsize */ | |
1357 | FALSE, /* pc_relative */ | |
1358 | 0, /* bitpos */ | |
1359 | complain_overflow_signed, /* complain_on_overflow */ | |
1360 | bfd_elf_generic_reloc, /* special_function */ | |
1361 | "R_NDS32_SDA17S2_RELA",/* name */ | |
1362 | FALSE, /* partial_inplace */ | |
1363 | 0x0001ffff, /* src_mask */ | |
1364 | 0x0001ffff, /* dst_mask */ | |
1365 | FALSE), /* pcrel_offset */ | |
1366 | ||
1367 | HOWTO (R_NDS32_SDA18S1_RELA, /* type */ | |
1368 | 1, /* rightshift */ | |
1369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1370 | 18, /* bitsize */ | |
1371 | FALSE, /* pc_relative */ | |
1372 | 0, /* bitpos */ | |
1373 | complain_overflow_signed, /* complain_on_overflow */ | |
1374 | bfd_elf_generic_reloc, /* special_function */ | |
1375 | "R_NDS32_SDA18S1_RELA",/* name */ | |
1376 | FALSE, /* partial_inplace */ | |
1377 | 0x0003ffff, /* src_mask */ | |
1378 | 0x0003ffff, /* dst_mask */ | |
1379 | FALSE), /* pcrel_offset */ | |
1380 | ||
1381 | HOWTO (R_NDS32_SDA19S0_RELA, /* type */ | |
1382 | 0, /* rightshift */ | |
1383 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1384 | 19, /* bitsize */ | |
1385 | FALSE, /* pc_relative */ | |
1386 | 0, /* bitpos */ | |
1387 | complain_overflow_signed, /* complain_on_overflow */ | |
1388 | bfd_elf_generic_reloc, /* special_function */ | |
1389 | "R_NDS32_SDA19S0_RELA",/* name */ | |
1390 | FALSE, /* partial_inplace */ | |
1391 | 0x0007ffff, /* src_mask */ | |
1392 | 0x0007ffff, /* dst_mask */ | |
1393 | FALSE), /* pcrel_offset */ | |
1394 | HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */ | |
1395 | 0, /* rightshift */ | |
1396 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1397 | 8, /* bitsize */ | |
1398 | FALSE, /* pc_relative */ | |
1399 | 0, /* bitpos */ | |
1400 | complain_overflow_dont,/* complain_on_overflow */ | |
1401 | nds32_elf_ignore_reloc,/* special_function */ | |
1402 | "R_NDS32_DWARF2_OP1_RELA", /* name */ | |
1403 | FALSE, /* partial_inplace */ | |
1404 | 0xff, /* src_mask */ | |
1405 | 0xff, /* dst_mask */ | |
1406 | FALSE), /* pcrel_offset */ | |
1407 | HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */ | |
1408 | 0, /* rightshift */ | |
1409 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1410 | 16, /* bitsize */ | |
1411 | FALSE, /* pc_relative */ | |
1412 | 0, /* bitpos */ | |
1413 | complain_overflow_dont,/* complain_on_overflow */ | |
1414 | nds32_elf_ignore_reloc,/* special_function */ | |
1415 | "R_NDS32_DWARF2_OP2_RELA", /* name */ | |
1416 | FALSE, /* partial_inplace */ | |
1417 | 0xffff, /* src_mask */ | |
1418 | 0xffff, /* dst_mask */ | |
1419 | FALSE), /* pcrel_offset */ | |
1420 | HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */ | |
1421 | 0, /* rightshift */ | |
1422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1423 | 32, /* bitsize */ | |
1424 | FALSE, /* pc_relative */ | |
1425 | 0, /* bitpos */ | |
1426 | complain_overflow_dont,/* complain_on_overflow */ | |
1427 | nds32_elf_ignore_reloc,/* special_function */ | |
1428 | "R_NDS32_DWARF2_LEB_RELA", /* name */ | |
1429 | FALSE, /* partial_inplace */ | |
1430 | 0xffffffff, /* src_mask */ | |
1431 | 0xffffffff, /* dst_mask */ | |
1432 | FALSE), /* pcrel_offset */ | |
1433 | HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */ | |
1434 | 0, /* rightshift */ | |
1435 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1436 | 16, /* bitsize */ | |
1437 | FALSE, /* pc_relative */ | |
1438 | 0, /* bitpos */ | |
1439 | complain_overflow_dont,/* complain_on_overflow */ | |
1440 | nds32_elf_ignore_reloc,/* special_function */ | |
1441 | "R_NDS32_UPDATE_TA_RELA", /* name */ | |
1442 | FALSE, /* partial_inplace */ | |
1443 | 0xffff, /* src_mask */ | |
1444 | 0xffff, /* dst_mask */ | |
1445 | FALSE), /* pcrel_offset */ | |
1446 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
1447 | entry for the symbol. */ | |
1448 | HOWTO (R_NDS32_9_PLTREL, /* type */ | |
1449 | 1, /* rightshift */ | |
1450 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1451 | 8, /* bitsize */ | |
1452 | TRUE, /* pc_relative */ | |
1453 | 0, /* bitpos */ | |
1454 | complain_overflow_signed, /* complain_on_overflow */ | |
1455 | bfd_elf_generic_reloc, /* special_function */ | |
1456 | "R_NDS32_9_PLTREL", /* name */ | |
1457 | FALSE, /* partial_inplace */ | |
1458 | 0xff, /* src_mask */ | |
1459 | 0xff, /* dst_mask */ | |
1460 | TRUE), /* pcrel_offset */ | |
1461 | /* Low 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1462 | HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */ | |
1463 | 0, /* rightshift */ | |
1464 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1465 | 20, /* bitsize */ | |
1466 | FALSE, /* pc_relative */ | |
1467 | 0, /* bitpos */ | |
1468 | complain_overflow_dont,/* complain_on_overflow */ | |
1469 | bfd_elf_generic_reloc, /* special_function */ | |
1470 | "R_NDS32_PLT_GOTREL_LO20", /* name */ | |
1471 | FALSE, /* partial_inplace */ | |
1472 | 0x000fffff, /* src_mask */ | |
1473 | 0x000fffff, /* dst_mask */ | |
1474 | FALSE), /* pcrel_offset */ | |
1475 | /* low 15 bits of PLT symbol offset relative to GOT (GP) */ | |
1476 | HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */ | |
1477 | 0, /* rightshift */ | |
1478 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1479 | 15, /* bitsize */ | |
1480 | FALSE, /* pc_relative */ | |
1481 | 0, /* bitpos */ | |
1482 | complain_overflow_dont,/* complain_on_overflow */ | |
1483 | bfd_elf_generic_reloc, /* special_function */ | |
1484 | "R_NDS32_PLT_GOTREL_LO15", /* name */ | |
1485 | FALSE, /* partial_inplace */ | |
1486 | 0x00007fff, /* src_mask */ | |
1487 | 0x00007fff, /* dst_mask */ | |
1488 | FALSE), /* pcrel_offset */ | |
1489 | /* Low 19 bits of PLT symbol offset relative to GOT (GP). */ | |
1490 | HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */ | |
1491 | 0, /* rightshift */ | |
1492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1493 | 19, /* bitsize */ | |
1494 | FALSE, /* pc_relative */ | |
1495 | 0, /* bitpos */ | |
1496 | complain_overflow_dont,/* complain_on_overflow */ | |
1497 | bfd_elf_generic_reloc, /* special_function */ | |
1498 | "R_NDS32_PLT_GOTREL_LO19", /* name */ | |
1499 | FALSE, /* partial_inplace */ | |
1500 | 0x0007ffff, /* src_mask */ | |
1501 | 0x0007ffff, /* dst_mask */ | |
1502 | FALSE), /* pcrel_offset */ | |
1503 | HOWTO (R_NDS32_GOT_LO15, /* type */ | |
1504 | 0, /* rightshift */ | |
1505 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1506 | 15, /* bitsize */ | |
1507 | FALSE, /* pc_relative */ | |
1508 | 0, /* bitpos */ | |
1509 | complain_overflow_dont,/* complain_on_overflow */ | |
1510 | bfd_elf_generic_reloc, /* special_function */ | |
1511 | "R_NDS32_GOT_LO15", /* name */ | |
1512 | FALSE, /* partial_inplace */ | |
1513 | 0x00007fff, /* src_mask */ | |
1514 | 0x00007fff, /* dst_mask */ | |
1515 | FALSE), /* pcrel_offset */ | |
1516 | HOWTO (R_NDS32_GOT_LO19, /* type */ | |
1517 | 0, /* rightshift */ | |
1518 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1519 | 19, /* bitsize */ | |
1520 | FALSE, /* pc_relative */ | |
1521 | 0, /* bitpos */ | |
1522 | complain_overflow_dont,/* complain_on_overflow */ | |
1523 | bfd_elf_generic_reloc, /* special_function */ | |
1524 | "R_NDS32_GOT_LO19", /* name */ | |
1525 | FALSE, /* partial_inplace */ | |
1526 | 0x0007ffff, /* src_mask */ | |
1527 | 0x0007ffff, /* dst_mask */ | |
1528 | FALSE), /* pcrel_offset */ | |
1529 | HOWTO (R_NDS32_GOTOFF_LO15, /* type */ | |
1530 | 0, /* rightshift */ | |
1531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1532 | 15, /* bitsize */ | |
1533 | FALSE, /* pc_relative */ | |
1534 | 0, /* bitpos */ | |
1535 | complain_overflow_dont,/* complain_on_overflow */ | |
1536 | bfd_elf_generic_reloc, /* special_function */ | |
1537 | "R_NDS32_GOTOFF_LO15", /* name */ | |
1538 | FALSE, /* partial_inplace */ | |
1539 | 0x00007fff, /* src_mask */ | |
1540 | 0x00007fff, /* dst_mask */ | |
1541 | FALSE), /* pcrel_offset */ | |
1542 | HOWTO (R_NDS32_GOTOFF_LO19, /* type */ | |
1543 | 0, /* rightshift */ | |
1544 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1545 | 19, /* bitsize */ | |
1546 | FALSE, /* pc_relative */ | |
1547 | 0, /* bitpos */ | |
1548 | complain_overflow_dont,/* complain_on_overflow */ | |
1549 | bfd_elf_generic_reloc, /* special_function */ | |
1550 | "R_NDS32_GOTOFF_LO19", /* name */ | |
1551 | FALSE, /* partial_inplace */ | |
1552 | 0x0007ffff, /* src_mask */ | |
1553 | 0x0007ffff, /* dst_mask */ | |
1554 | FALSE), /* pcrel_offset */ | |
1555 | /* GOT 15 bits offset. */ | |
1556 | HOWTO (R_NDS32_GOT15S2_RELA, /* type */ | |
1557 | 2, /* rightshift */ | |
1558 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1559 | 15, /* bitsize */ | |
1560 | FALSE, /* pc_relative */ | |
1561 | 0, /* bitpos */ | |
1562 | complain_overflow_signed, /* complain_on_overflow */ | |
1563 | bfd_elf_generic_reloc, /* special_function */ | |
1564 | "R_NDS32_GOT15S2_RELA",/* name */ | |
1565 | FALSE, /* partial_inplace */ | |
1566 | 0x00007fff, /* src_mask */ | |
1567 | 0x00007fff, /* dst_mask */ | |
1568 | FALSE), /* pcrel_offset */ | |
1569 | /* GOT 17 bits offset. */ | |
1570 | HOWTO (R_NDS32_GOT17S2_RELA, /* type */ | |
1571 | 2, /* rightshift */ | |
1572 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1573 | 17, /* bitsize */ | |
1574 | FALSE, /* pc_relative */ | |
1575 | 0, /* bitpos */ | |
1576 | complain_overflow_signed, /* complain_on_overflow */ | |
1577 | bfd_elf_generic_reloc, /* special_function */ | |
1578 | "R_NDS32_GOT17S2_RELA",/* name */ | |
1579 | FALSE, /* partial_inplace */ | |
1580 | 0x0001ffff, /* src_mask */ | |
1581 | 0x0001ffff, /* dst_mask */ | |
1582 | FALSE), /* pcrel_offset */ | |
1583 | /* A 5 bit address. */ | |
1584 | HOWTO (R_NDS32_5_RELA, /* type */ | |
1585 | 0, /* rightshift */ | |
1586 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1587 | 5, /* bitsize */ | |
1588 | FALSE, /* pc_relative */ | |
1589 | 0, /* bitpos */ | |
1590 | complain_overflow_signed, /* complain_on_overflow */ | |
1591 | bfd_elf_generic_reloc, /* special_function */ | |
1592 | "R_NDS32_5_RELA", /* name */ | |
1593 | FALSE, /* partial_inplace */ | |
1594 | 0x1f, /* src_mask */ | |
1595 | 0x1f, /* dst_mask */ | |
1596 | FALSE), /* pcrel_offset */ | |
1597 | HOWTO (R_NDS32_10_UPCREL_RELA,/* type */ | |
1598 | 1, /* rightshift */ | |
1599 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1600 | 9, /* bitsize */ | |
1601 | TRUE, /* pc_relative */ | |
1602 | 0, /* bitpos */ | |
1603 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1604 | bfd_elf_generic_reloc, /* special_function */ | |
1605 | "R_NDS32_10_UPCREL_RELA", /* name */ | |
1606 | FALSE, /* partial_inplace */ | |
1607 | 0x1ff, /* src_mask */ | |
1608 | 0x1ff, /* dst_mask */ | |
1609 | TRUE), /* pcrel_offset */ | |
1610 | HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */ | |
1611 | 2, /* rightshift */ | |
1612 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1613 | 7, /* bitsize */ | |
1614 | FALSE, /* pc_relative */ | |
1615 | 0, /* bitpos */ | |
1616 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1617 | bfd_elf_generic_reloc, /* special_function */ | |
1618 | "R_NDS32_SDA_FP7U2_RELA", /* name */ | |
1619 | FALSE, /* partial_inplace */ | |
1620 | 0x0000007f, /* src_mask */ | |
1621 | 0x0000007f, /* dst_mask */ | |
1622 | FALSE), /* pcrel_offset */ | |
1623 | HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */ | |
1624 | 1, /* rightshift */ | |
1625 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1626 | 8, /* bitsize */ | |
1627 | TRUE, /* pc_relative */ | |
1628 | 0, /* bitpos */ | |
1629 | complain_overflow_signed, /* complain_on_overflow */ | |
1630 | bfd_elf_generic_reloc, /* special_function */ | |
1631 | "R_NDS32_WORD_9_PCREL_RELA", /* name */ | |
1632 | FALSE, /* partial_inplace */ | |
1633 | 0xff, /* src_mask */ | |
1634 | 0xff, /* dst_mask */ | |
1635 | TRUE), /* pcrel_offset */ | |
1636 | HOWTO (R_NDS32_25_ABS_RELA, /* type */ | |
1637 | 1, /* rightshift */ | |
1638 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1639 | 24, /* bitsize */ | |
1640 | FALSE, /* pc_relative */ | |
1641 | 0, /* bitpos */ | |
1642 | complain_overflow_dont,/* complain_on_overflow */ | |
1643 | bfd_elf_generic_reloc, /* special_function */ | |
1644 | "R_NDS32_25_ABS_RELA", /* name */ | |
1645 | FALSE, /* partial_inplace */ | |
1646 | 0xffffff, /* src_mask */ | |
1647 | 0xffffff, /* dst_mask */ | |
1648 | FALSE), /* pcrel_offset */ | |
1649 | ||
1650 | /* A relative 17 bit relocation for ifc, right shifted by 1. */ | |
1651 | HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */ | |
1652 | 1, /* rightshift */ | |
1653 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1654 | 16, /* bitsize */ | |
1655 | TRUE, /* pc_relative */ | |
1656 | 0, /* bitpos */ | |
1657 | complain_overflow_signed, /* complain_on_overflow */ | |
1658 | bfd_elf_generic_reloc, /* special_function */ | |
1659 | "R_NDS32_17IFC_PCREL_RELA", /* name */ | |
1660 | FALSE, /* partial_inplace */ | |
1661 | 0xffff, /* src_mask */ | |
1662 | 0xffff, /* dst_mask */ | |
1663 | TRUE), /* pcrel_offset */ | |
1664 | ||
1665 | /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */ | |
1666 | HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */ | |
1667 | 1, /* rightshift */ | |
1668 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1669 | 9, /* bitsize */ | |
1670 | TRUE, /* pc_relative */ | |
1671 | 0, /* bitpos */ | |
1672 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1673 | bfd_elf_generic_reloc, /* special_function */ | |
1674 | "R_NDS32_10IFCU_PCREL_RELA", /* name */ | |
1675 | FALSE, /* partial_inplace */ | |
1676 | 0x1ff, /* src_mask */ | |
1677 | 0x1ff, /* dst_mask */ | |
1678 | TRUE), /* pcrel_offset */ | |
1c8f6a4d KLC |
1679 | |
1680 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1681 | HOWTO (R_NDS32_TLS_LE_HI20, /* type */ | |
1682 | 12, /* rightshift */ | |
1683 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1684 | 20, /* bitsize */ | |
1685 | FALSE, /* pc_relative */ | |
1686 | 0, /* bitpos */ | |
1687 | complain_overflow_dont, /* complain_on_overflow */ | |
1688 | bfd_elf_generic_reloc, /* special_function */ | |
1689 | "R_NDS32_TLS_LE_HI20", /* name */ | |
1690 | FALSE, /* partial_inplace */ | |
1691 | 0x000fffff, /* src_mask */ | |
1692 | 0x000fffff, /* dst_mask */ | |
1693 | FALSE), /* pcrel_offset */ | |
1694 | HOWTO (R_NDS32_TLS_LE_LO12, /* type */ | |
1695 | 0, /* rightshift */ | |
1696 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1697 | 12, /* bitsize */ | |
1698 | FALSE, /* pc_relative */ | |
1699 | 0, /* bitpos */ | |
1700 | complain_overflow_dont, /* complain_on_overflow */ | |
1701 | bfd_elf_generic_reloc, /* special_function */ | |
1702 | "R_NDS32_TLS_LE_LO12", /* name */ | |
1703 | FALSE, /* partial_inplace */ | |
1704 | 0x00000fff, /* src_mask */ | |
1705 | 0x00000fff, /* dst_mask */ | |
1706 | FALSE), /* pcrel_offset */ | |
1707 | ||
1708 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1709 | HOWTO (R_NDS32_TLS_IE_HI20, /* type */ | |
1710 | 12, /* rightshift */ | |
1711 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1712 | 20, /* bitsize */ | |
1713 | FALSE, /* pc_relative */ | |
1714 | 0, /* bitpos */ | |
1715 | complain_overflow_dont, /* complain_on_overflow */ | |
1716 | bfd_elf_generic_reloc, /* special_function */ | |
1717 | "R_NDS32_TLS_IE_HI20", /* name */ | |
1718 | FALSE, /* partial_inplace */ | |
1719 | 0x000fffff, /* src_mask */ | |
1720 | 0x000fffff, /* dst_mask */ | |
1721 | FALSE), /* pcrel_offset */ | |
1722 | HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */ | |
1723 | 2, /* rightshift */ | |
1724 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1725 | 10, /* bitsize */ | |
1726 | FALSE, /* pc_relative */ | |
1727 | 0, /* bitpos */ | |
1728 | complain_overflow_dont, /* complain_on_overflow */ | |
1729 | bfd_elf_generic_reloc, /* special_function */ | |
1730 | "R_NDS32_TLS_IE_LO12S2", /* name */ | |
1731 | FALSE, /* partial_inplace */ | |
1732 | 0x000003ff, /* src_mask */ | |
1733 | 0x000003ff, /* dst_mask */ | |
1734 | FALSE), /* pcrel_offset */ | |
1735 | /* Mark a TLS IE entry in GOT. */ | |
1736 | HOWTO (R_NDS32_TLS_TPOFF, /* type */ | |
1737 | 0, /* rightshift */ | |
1738 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1739 | 32, /* bitsize */ | |
1740 | FALSE, /* pc_relative */ | |
1741 | 0, /* bitpos */ | |
1742 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1743 | bfd_elf_generic_reloc, /* special_function */ | |
1744 | "R_NDS32_TLS_TPOFF", /* name */ | |
1745 | FALSE, /* partial_inplace */ | |
1746 | 0xffffffff, /* src_mask */ | |
1747 | 0xffffffff, /* dst_mask */ | |
1748 | FALSE), /* pcrel_offset */ | |
1749 | /* A 20 bit address. */ | |
1750 | HOWTO (R_NDS32_TLS_LE_20, /* type */ | |
1751 | 0, /* rightshift */ | |
1752 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1753 | 20, /* bitsize */ | |
1754 | FALSE, /* pc_relative */ | |
1755 | 0, /* bitpos */ | |
1756 | complain_overflow_signed, /* complain_on_overflow */ | |
1757 | bfd_elf_generic_reloc, /* special_function */ | |
1758 | "R_NDS32_TLS_LE_20", /* name */ | |
1759 | FALSE, /* partial_inplace */ | |
1760 | 0xfffff, /* src_mask */ | |
1761 | 0xfffff, /* dst_mask */ | |
1762 | FALSE), /* pcrel_offset */ | |
1763 | HOWTO (R_NDS32_TLS_LE_15S0, /* type */ | |
1764 | 0, /* rightshift */ | |
1765 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1766 | 15, /* bitsize */ | |
1767 | FALSE, /* pc_relative */ | |
1768 | 0, /* bitpos */ | |
1769 | complain_overflow_signed, /* complain_on_overflow */ | |
1770 | bfd_elf_generic_reloc, /* special_function */ | |
1771 | "R_NDS32_TLS_LE_15S0", /* name */ | |
1772 | FALSE, /* partial_inplace */ | |
1773 | 0x7fff, /* src_mask */ | |
1774 | 0x7fff, /* dst_mask */ | |
1775 | FALSE), /* pcrel_offset */ | |
1776 | HOWTO (R_NDS32_TLS_LE_15S1, /* type */ | |
1777 | 1, /* rightshift */ | |
1778 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1779 | 15, /* bitsize */ | |
1780 | FALSE, /* pc_relative */ | |
1781 | 0, /* bitpos */ | |
1782 | complain_overflow_signed, /* complain_on_overflow */ | |
1783 | bfd_elf_generic_reloc, /* special_function */ | |
1784 | "R_NDS32_TLS_LE_15S1", /* name */ | |
1785 | FALSE, /* partial_inplace */ | |
1786 | 0x7fff, /* src_mask */ | |
1787 | 0x7fff, /* dst_mask */ | |
1788 | FALSE), /* pcrel_offset */ | |
1789 | HOWTO (R_NDS32_TLS_LE_15S2, /* type */ | |
1790 | 2, /* rightshift */ | |
1791 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1792 | 15, /* bitsize */ | |
1793 | FALSE, /* pc_relative */ | |
1794 | 0, /* bitpos */ | |
1795 | complain_overflow_signed, /* complain_on_overflow */ | |
1796 | bfd_elf_generic_reloc, /* special_function */ | |
1797 | "R_NDS32_TLS_LE_15S2", /* name */ | |
1798 | FALSE, /* partial_inplace */ | |
1799 | 0x7fff, /* src_mask */ | |
1800 | 0x7fff, /* dst_mask */ | |
1801 | FALSE), /* pcrel_offset */ | |
1802 | ||
1803 | /* Relax hint for unconditional call sequence */ | |
1804 | HOWTO (R_NDS32_LONGCALL4, /* type */ | |
1805 | 0, /* rightshift */ | |
1806 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1807 | 32, /* bitsize */ | |
1808 | FALSE, /* pc_relative */ | |
1809 | 0, /* bitpos */ | |
1810 | complain_overflow_dont, /* complain_on_overflow */ | |
1811 | nds32_elf_ignore_reloc, /* special_function */ | |
1812 | "R_NDS32_LONGCALL4", /* name */ | |
1813 | FALSE, /* partial_inplace */ | |
1814 | 0xffffffff, /* src_mask */ | |
1815 | 0xffffffff, /* dst_mask */ | |
1816 | FALSE), /* pcrel_offset */ | |
1817 | ||
1818 | /* Relax hint for conditional call sequence. */ | |
1819 | HOWTO (R_NDS32_LONGCALL5, /* type */ | |
1820 | 0, /* rightshift */ | |
1821 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1822 | 32, /* bitsize */ | |
1823 | FALSE, /* pc_relative */ | |
1824 | 0, /* bitpos */ | |
1825 | complain_overflow_dont, /* complain_on_overflow */ | |
1826 | nds32_elf_ignore_reloc, /* special_function */ | |
1827 | "R_NDS32_LONGCALL5", /* name */ | |
1828 | FALSE, /* partial_inplace */ | |
1829 | 0xffffffff, /* src_mask */ | |
1830 | 0xffffffff, /* dst_mask */ | |
1831 | FALSE), /* pcrel_offset */ | |
1832 | ||
1833 | /* Relax hint for conditional call sequence. */ | |
1834 | HOWTO (R_NDS32_LONGCALL6, /* type */ | |
1835 | 0, /* rightshift */ | |
1836 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1837 | 32, /* bitsize */ | |
1838 | FALSE, /* pc_relative */ | |
1839 | 0, /* bitpos */ | |
1840 | complain_overflow_dont, /* complain_on_overflow */ | |
1841 | nds32_elf_ignore_reloc, /* special_function */ | |
1842 | "R_NDS32_LONGCALL6", /* name */ | |
1843 | FALSE, /* partial_inplace */ | |
1844 | 0xffffffff, /* src_mask */ | |
1845 | 0xffffffff, /* dst_mask */ | |
1846 | FALSE), /* pcrel_offset */ | |
1847 | ||
1848 | /* Relax hint for unconditional branch sequence. */ | |
1849 | HOWTO (R_NDS32_LONGJUMP4, /* type */ | |
1850 | 0, /* rightshift */ | |
1851 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1852 | 32, /* bitsize */ | |
1853 | FALSE, /* pc_relative */ | |
1854 | 0, /* bitpos */ | |
1855 | complain_overflow_dont, /* complain_on_overflow */ | |
1856 | nds32_elf_ignore_reloc, /* special_function */ | |
1857 | "R_NDS32_LONGJUMP4", /* name */ | |
1858 | FALSE, /* partial_inplace */ | |
1859 | 0xffffffff, /* src_mask */ | |
1860 | 0xffffffff, /* dst_mask */ | |
1861 | FALSE), /* pcrel_offset */ | |
1862 | ||
1863 | /* Relax hint for conditional branch sequence. */ | |
1864 | HOWTO (R_NDS32_LONGJUMP5, /* type */ | |
1865 | 0, /* rightshift */ | |
1866 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1867 | 32, /* bitsize */ | |
1868 | FALSE, /* pc_relative */ | |
1869 | 0, /* bitpos */ | |
1870 | complain_overflow_dont, /* complain_on_overflow */ | |
1871 | nds32_elf_ignore_reloc, /* special_function */ | |
1872 | "R_NDS32_LONGJUMP5", /* name */ | |
1873 | FALSE, /* partial_inplace */ | |
1874 | 0xffffffff, /* src_mask */ | |
1875 | 0xffffffff, /* dst_mask */ | |
1876 | FALSE), /* pcrel_offset */ | |
1877 | ||
1878 | /* Relax hint for conditional branch sequence. */ | |
1879 | HOWTO (R_NDS32_LONGJUMP6, /* type */ | |
1880 | 0, /* rightshift */ | |
1881 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1882 | 32, /* bitsize */ | |
1883 | FALSE, /* pc_relative */ | |
1884 | 0, /* bitpos */ | |
1885 | complain_overflow_dont, /* complain_on_overflow */ | |
1886 | nds32_elf_ignore_reloc, /* special_function */ | |
1887 | "R_NDS32_LONGJUMP6", /* name */ | |
1888 | FALSE, /* partial_inplace */ | |
1889 | 0xffffffff, /* src_mask */ | |
1890 | 0xffffffff, /* dst_mask */ | |
1891 | FALSE), /* pcrel_offset */ | |
1892 | ||
1893 | /* Relax hint for conditional branch sequence. */ | |
1894 | HOWTO (R_NDS32_LONGJUMP7, /* type */ | |
1895 | 0, /* rightshift */ | |
1896 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1897 | 32, /* bitsize */ | |
1898 | FALSE, /* pc_relative */ | |
1899 | 0, /* bitpos */ | |
1900 | complain_overflow_dont, /* complain_on_overflow */ | |
1901 | nds32_elf_ignore_reloc, /* special_function */ | |
1902 | "R_NDS32_LONGJUMP7", /* name */ | |
1903 | FALSE, /* partial_inplace */ | |
1904 | 0xffffffff, /* src_mask */ | |
1905 | 0xffffffff, /* dst_mask */ | |
1906 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
1907 | }; |
1908 | ||
1909 | /* Relocations used for relaxation. */ | |
1910 | static reloc_howto_type nds32_elf_relax_howto_table[] = | |
1911 | { | |
1912 | HOWTO (R_NDS32_RELAX_ENTRY, /* 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_RELAX_ENTRY", /* name */ | |
1921 | FALSE, /* partial_inplace */ | |
1922 | 0xffffffff, /* src_mask */ | |
1923 | 0xffffffff, /* dst_mask */ | |
1924 | FALSE), /* pcrel_offset */ | |
1925 | HOWTO (R_NDS32_GOT_SUFF, /* type */ | |
1926 | 0, /* rightshift */ | |
1927 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1928 | 32, /* bitsize */ | |
1929 | FALSE, /* pc_relative */ | |
1930 | 0, /* bitpos */ | |
1931 | complain_overflow_dont,/* complain_on_overflow */ | |
1932 | nds32_elf_ignore_reloc,/* special_function */ | |
1933 | "R_NDS32_GOT_SUFF", /* name */ | |
1934 | FALSE, /* partial_inplace */ | |
1935 | 0xffffffff, /* src_mask */ | |
1936 | 0xffffffff, /* dst_mask */ | |
1937 | FALSE), /* pcrel_offset */ | |
1938 | HOWTO (R_NDS32_GOTOFF_SUFF, /* type */ | |
1939 | 0, /* rightshift */ | |
1940 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1941 | 32, /* bitsize */ | |
1942 | FALSE, /* pc_relative */ | |
1943 | 0, /* bitpos */ | |
1944 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1945 | nds32_elf_ignore_reloc,/* special_function */ | |
1946 | "R_NDS32_GOTOFF_SUFF", /* name */ | |
1947 | FALSE, /* partial_inplace */ | |
1948 | 0xffffffff, /* src_mask */ | |
1949 | 0xffffffff, /* dst_mask */ | |
1950 | FALSE), /* pcrel_offset */ | |
1951 | HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */ | |
1952 | 0, /* rightshift */ | |
1953 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1954 | 32, /* bitsize */ | |
1955 | FALSE, /* pc_relative */ | |
1956 | 0, /* bitpos */ | |
1957 | complain_overflow_dont,/* complain_on_overflow */ | |
1958 | nds32_elf_ignore_reloc,/* special_function */ | |
1959 | "R_NDS32_PLT_GOT_SUFF",/* name */ | |
1960 | FALSE, /* partial_inplace */ | |
1961 | 0xffffffff, /* src_mask */ | |
1962 | 0xffffffff, /* dst_mask */ | |
1963 | FALSE), /* pcrel_offset */ | |
1964 | HOWTO (R_NDS32_MULCALL_SUFF, /* type */ | |
1965 | 0, /* rightshift */ | |
1966 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1967 | 32, /* bitsize */ | |
1968 | FALSE, /* pc_relative */ | |
1969 | 0, /* bitpos */ | |
1970 | complain_overflow_dont,/* complain_on_overflow */ | |
1971 | nds32_elf_ignore_reloc,/* special_function */ | |
1972 | "R_NDS32_MULCALL_SUFF",/* name */ | |
1973 | FALSE, /* partial_inplace */ | |
1974 | 0xffffffff, /* src_mask */ | |
1975 | 0xffffffff, /* dst_mask */ | |
1976 | FALSE), /* pcrel_offset */ | |
1977 | HOWTO (R_NDS32_PTR, /* type */ | |
1978 | 0, /* rightshift */ | |
1979 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1980 | 32, /* bitsize */ | |
1981 | FALSE, /* pc_relative */ | |
1982 | 0, /* bitpos */ | |
1983 | complain_overflow_dont,/* complain_on_overflow */ | |
1984 | nds32_elf_ignore_reloc,/* special_function */ | |
1985 | "R_NDS32_PTR", /* name */ | |
1986 | FALSE, /* partial_inplace */ | |
1987 | 0xffffffff, /* src_mask */ | |
1988 | 0xffffffff, /* dst_mask */ | |
1989 | FALSE), /* pcrel_offset */ | |
1990 | HOWTO (R_NDS32_PTR_COUNT, /* type */ | |
1991 | 0, /* rightshift */ | |
1992 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1993 | 32, /* bitsize */ | |
1994 | FALSE, /* pc_relative */ | |
1995 | 0, /* bitpos */ | |
1996 | complain_overflow_dont,/* complain_on_overflow */ | |
1997 | nds32_elf_ignore_reloc,/* special_function */ | |
1998 | "R_NDS32_PTR_COUNT", /* name */ | |
1999 | FALSE, /* partial_inplace */ | |
2000 | 0xffffffff, /* src_mask */ | |
2001 | 0xffffffff, /* dst_mask */ | |
2002 | FALSE), /* pcrel_offset */ | |
2003 | HOWTO (R_NDS32_PTR_RESOLVED, /* type */ | |
2004 | 0, /* rightshift */ | |
2005 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2006 | 32, /* bitsize */ | |
2007 | FALSE, /* pc_relative */ | |
2008 | 0, /* bitpos */ | |
2009 | complain_overflow_dont,/* complain_on_overflow */ | |
2010 | nds32_elf_ignore_reloc,/* special_function */ | |
2011 | "R_NDS32_PTR_RESOLVED",/* name */ | |
2012 | FALSE, /* partial_inplace */ | |
2013 | 0xffffffff, /* src_mask */ | |
2014 | 0xffffffff, /* dst_mask */ | |
2015 | FALSE), /* pcrel_offset */ | |
2016 | HOWTO (R_NDS32_PLTBLOCK, /* type */ | |
2017 | 0, /* rightshift */ | |
2018 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2019 | 32, /* bitsize */ | |
2020 | FALSE, /* pc_relative */ | |
2021 | 0, /* bitpos */ | |
2022 | complain_overflow_dont,/* complain_on_overflow */ | |
2023 | nds32_elf_ignore_reloc,/* special_function */ | |
2024 | "R_NDS32_PLTBLOCK", /* name */ | |
2025 | FALSE, /* partial_inplace */ | |
2026 | 0xffffffff, /* src_mask */ | |
2027 | 0xffffffff, /* dst_mask */ | |
2028 | FALSE), /* pcrel_offset */ | |
2029 | HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */ | |
2030 | 0, /* rightshift */ | |
2031 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2032 | 32, /* bitsize */ | |
2033 | FALSE, /* pc_relative */ | |
2034 | 0, /* bitpos */ | |
2035 | complain_overflow_dont,/* complain_on_overflow */ | |
2036 | nds32_elf_ignore_reloc,/* special_function */ | |
2037 | "R_NDS32_RELAX_REGION_BEGIN", /* name */ | |
2038 | FALSE, /* partial_inplace */ | |
2039 | 0xffffffff, /* src_mask */ | |
2040 | 0xffffffff, /* dst_mask */ | |
2041 | FALSE), /* pcrel_offset */ | |
2042 | HOWTO (R_NDS32_RELAX_REGION_END, /* type */ | |
2043 | 0, /* rightshift */ | |
2044 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2045 | 32, /* bitsize */ | |
2046 | FALSE, /* pc_relative */ | |
2047 | 0, /* bitpos */ | |
2048 | complain_overflow_dont,/* complain_on_overflow */ | |
2049 | nds32_elf_ignore_reloc,/* special_function */ | |
2050 | "R_NDS32_RELAX_REGION_END", /* name */ | |
2051 | FALSE, /* partial_inplace */ | |
2052 | 0xffffffff, /* src_mask */ | |
2053 | 0xffffffff, /* dst_mask */ | |
2054 | FALSE), /* pcrel_offset */ | |
2055 | HOWTO (R_NDS32_MINUEND, /* type */ | |
2056 | 0, /* rightshift */ | |
2057 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2058 | 32, /* bitsize */ | |
2059 | FALSE, /* pc_relative */ | |
2060 | 0, /* bitpos */ | |
2061 | complain_overflow_dont,/* complain_on_overflow */ | |
2062 | nds32_elf_ignore_reloc,/* special_function */ | |
2063 | "R_NDS32_MINUEND", /* name */ | |
2064 | FALSE, /* partial_inplace */ | |
2065 | 0xffffffff, /* src_mask */ | |
2066 | 0xffffffff, /* dst_mask */ | |
2067 | FALSE), /* pcrel_offset */ | |
2068 | HOWTO (R_NDS32_SUBTRAHEND, /* type */ | |
2069 | 0, /* rightshift */ | |
2070 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2071 | 32, /* bitsize */ | |
2072 | FALSE, /* pc_relative */ | |
2073 | 0, /* bitpos */ | |
2074 | complain_overflow_dont,/* complain_on_overflow */ | |
2075 | nds32_elf_ignore_reloc,/* special_function */ | |
2076 | "R_NDS32_SUBTRAHEND", /* name */ | |
2077 | FALSE, /* partial_inplace */ | |
2078 | 0xffffffff, /* src_mask */ | |
2079 | 0xffffffff, /* dst_mask */ | |
2080 | FALSE), /* pcrel_offset */ | |
2081 | HOWTO (R_NDS32_DIFF8, /* type */ | |
2082 | 0, /* rightshift */ | |
2083 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2084 | 8, /* bitsize */ | |
2085 | FALSE, /* pc_relative */ | |
2086 | 0, /* bitpos */ | |
2087 | complain_overflow_dont,/* complain_on_overflow */ | |
2088 | nds32_elf_ignore_reloc,/* special_function */ | |
2089 | "R_NDS32_DIFF8", /* name */ | |
2090 | FALSE, /* partial_inplace */ | |
2091 | 0x000000ff, /* src_mask */ | |
2092 | 0x000000ff, /* dst_mask */ | |
2093 | FALSE), /* pcrel_offset */ | |
2094 | HOWTO (R_NDS32_DIFF16, /* type */ | |
2095 | 0, /* rightshift */ | |
2096 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2097 | 16, /* bitsize */ | |
2098 | FALSE, /* pc_relative */ | |
2099 | 0, /* bitpos */ | |
2100 | complain_overflow_dont,/* complain_on_overflow */ | |
2101 | nds32_elf_ignore_reloc,/* special_function */ | |
2102 | "R_NDS32_DIFF16", /* name */ | |
2103 | FALSE, /* partial_inplace */ | |
2104 | 0x0000ffff, /* src_mask */ | |
2105 | 0x0000ffff, /* dst_mask */ | |
2106 | FALSE), /* pcrel_offset */ | |
2107 | HOWTO (R_NDS32_DIFF32, /* type */ | |
2108 | 0, /* rightshift */ | |
2109 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2110 | 32, /* bitsize */ | |
2111 | FALSE, /* pc_relative */ | |
2112 | 0, /* bitpos */ | |
2113 | complain_overflow_dont,/* complain_on_overflow */ | |
2114 | nds32_elf_ignore_reloc,/* special_function */ | |
2115 | "R_NDS32_DIFF32", /* name */ | |
2116 | FALSE, /* partial_inplace */ | |
2117 | 0xffffffff, /* src_mask */ | |
2118 | 0xffffffff, /* dst_mask */ | |
2119 | FALSE), /* pcrel_offset */ | |
2120 | HOWTO (R_NDS32_DIFF_ULEB128, /* type */ | |
2121 | 0, /* rightshift */ | |
2122 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2123 | 0, /* bitsize */ | |
2124 | FALSE, /* pc_relative */ | |
2125 | 0, /* bitpos */ | |
2126 | complain_overflow_dont,/* complain_on_overflow */ | |
2127 | nds32_elf_ignore_reloc,/* special_function */ | |
2128 | "R_NDS32_DIFF_ULEB128",/* name */ | |
2129 | FALSE, /* partial_inplace */ | |
2130 | 0xffffffff, /* src_mask */ | |
2131 | 0xffffffff, /* dst_mask */ | |
2132 | FALSE), /* pcrel_offset */ | |
2133 | HOWTO (R_NDS32_DATA, /* type */ | |
2134 | 0, /* rightshift */ | |
2135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2136 | 32, /* bitsize */ | |
2137 | FALSE, /* pc_relative */ | |
2138 | 0, /* bitpos */ | |
2139 | complain_overflow_dont,/* complain_on_overflow */ | |
2140 | nds32_elf_ignore_reloc,/* special_function */ | |
2141 | "R_NDS32_DATA", /* name */ | |
2142 | FALSE, /* partial_inplace */ | |
2143 | 0xffffffff, /* src_mask */ | |
2144 | 0xffffffff, /* dst_mask */ | |
2145 | FALSE), /* pcrel_offset */ | |
2146 | HOWTO (R_NDS32_TRAN, /* type */ | |
2147 | 0, /* rightshift */ | |
2148 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2149 | 32, /* bitsize */ | |
2150 | FALSE, /* pc_relative */ | |
2151 | 0, /* bitpos */ | |
2152 | complain_overflow_dont,/* complain_on_overflow */ | |
2153 | nds32_elf_ignore_reloc,/* special_function */ | |
2154 | "R_NDS32_TRAN", /* name */ | |
2155 | FALSE, /* partial_inplace */ | |
2156 | 0xffffffff, /* src_mask */ | |
2157 | 0xffffffff, /* dst_mask */ | |
2158 | FALSE), /* pcrel_offset */ | |
1c8f6a4d KLC |
2159 | HOWTO (R_NDS32_TLS_LE_ADD, /* type */ |
2160 | 0, /* rightshift */ | |
2161 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2162 | 32, /* bitsize */ | |
2163 | FALSE, /* pc_relative */ | |
2164 | 0, /* bitpos */ | |
2165 | complain_overflow_dont, /* complain_on_overflow */ | |
2166 | nds32_elf_ignore_reloc, /* special_function */ | |
2167 | "R_NDS32_TLS_LE_ADD", /* name */ | |
2168 | FALSE, /* partial_inplace */ | |
2169 | 0xffffffff, /* src_mask */ | |
2170 | 0xffffffff, /* dst_mask */ | |
2171 | FALSE), /* pcrel_offset */ | |
2172 | HOWTO (R_NDS32_TLS_LE_LS, /* type */ | |
2173 | 0, /* rightshift */ | |
2174 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2175 | 32, /* bitsize */ | |
2176 | FALSE, /* pc_relative */ | |
2177 | 0, /* bitpos */ | |
2178 | complain_overflow_dont, /* complain_on_overflow */ | |
2179 | nds32_elf_ignore_reloc, /* special_function */ | |
2180 | "R_NDS32_TLS_LE_LS", /* name */ | |
2181 | FALSE, /* partial_inplace */ | |
2182 | 0xffffffff, /* src_mask */ | |
2183 | 0xffffffff, /* dst_mask */ | |
2184 | FALSE), /* pcrel_offset */ | |
2185 | HOWTO (R_NDS32_EMPTY, /* type */ | |
2186 | 0, /* rightshift */ | |
2187 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2188 | 32, /* bitsize */ | |
2189 | FALSE, /* pc_relative */ | |
2190 | 0, /* bitpos */ | |
2191 | complain_overflow_dont, /* complain_on_overflow */ | |
2192 | nds32_elf_ignore_reloc, /* special_function */ | |
2193 | "R_NDS32_EMPTY", /* name */ | |
2194 | FALSE, /* partial_inplace */ | |
2195 | 0xffffffff, /* src_mask */ | |
2196 | 0xffffffff, /* dst_mask */ | |
2197 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
2198 | }; |
2199 | ||
2200 | \f | |
2201 | /* nds32_insertion_sort sorts an array with nmemb elements of size size. | |
2202 | This prototype is the same as qsort (). */ | |
2203 | ||
2204 | void | |
2205 | nds32_insertion_sort (void *base, size_t nmemb, size_t size, | |
2206 | int (*compar) (const void *lhs, const void *rhs)) | |
2207 | { | |
2208 | char *ptr = (char *) base; | |
1c8f6a4d | 2209 | int i, j; |
e1fa0163 | 2210 | char *tmp = xmalloc (size); |
35c08157 KLC |
2211 | |
2212 | /* If i is less than j, i is inserted before j. | |
2213 | ||
2214 | |---- j ----- i --------------| | |
2215 | \ / \ / | |
2216 | sorted unsorted | |
2217 | */ | |
2218 | ||
1c8f6a4d | 2219 | for (i = 1; i < (int) nmemb; i++) |
35c08157 | 2220 | { |
1c8f6a4d KLC |
2221 | for (j = (i - 1); j >= 0; j--) |
2222 | if (compar (ptr + i * size, ptr + j * size) >= 0) | |
35c08157 KLC |
2223 | break; |
2224 | ||
1c8f6a4d KLC |
2225 | j++; |
2226 | ||
35c08157 | 2227 | if (i == j) |
1c8f6a4d | 2228 | continue; /* i is in order. */ |
35c08157 KLC |
2229 | |
2230 | memcpy (tmp, ptr + i * size, size); | |
2231 | memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size); | |
2232 | memcpy (ptr + j * size, tmp, size); | |
2233 | } | |
e1fa0163 | 2234 | free (tmp); |
35c08157 KLC |
2235 | } |
2236 | ||
2237 | /* Sort relocation by r_offset. | |
2238 | ||
2239 | We didn't use qsort () in stdlib, because quick-sort is not a stable sorting | |
2240 | algorithm. Relocations at the same r_offset must keep their order. | |
2241 | For example, RELAX_ENTRY must be the very first relocation entry. | |
2242 | ||
2243 | Currently, this function implements insertion-sort. | |
2244 | ||
2245 | FIXME: If we already sort them in assembler, why bother sort them | |
2246 | here again? */ | |
2247 | ||
2248 | static int | |
2249 | compar_reloc (const void *lhs, const void *rhs) | |
2250 | { | |
2251 | const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs; | |
2252 | const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs; | |
2253 | ||
2254 | if (l->r_offset > r->r_offset) | |
2255 | return 1; | |
2256 | else if (l->r_offset == r->r_offset) | |
2257 | return 0; | |
2258 | else | |
2259 | return -1; | |
2260 | } | |
2261 | ||
2262 | /* Functions listed below are only used for old relocs. | |
2263 | * nds32_elf_9_pcrel_reloc | |
2264 | * nds32_elf_do_9_pcrel_reloc | |
2265 | * nds32_elf_hi20_reloc | |
2266 | * nds32_elf_relocate_hi20 | |
2267 | * nds32_elf_lo12_reloc | |
2268 | * nds32_elf_sda15_reloc | |
2269 | * nds32_elf_generic_reloc | |
2270 | */ | |
2271 | ||
2272 | /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */ | |
2273 | ||
2274 | static bfd_reloc_status_type | |
2275 | nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2276 | void *data, asection *input_section, bfd *output_bfd, | |
2277 | char **error_message ATTRIBUTE_UNUSED) | |
2278 | { | |
2279 | /* This part is from bfd_elf_generic_reloc. */ | |
2280 | if (output_bfd != (bfd *) NULL | |
2281 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2282 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2283 | { | |
2284 | reloc_entry->address += input_section->output_offset; | |
2285 | return bfd_reloc_ok; | |
2286 | } | |
2287 | ||
2288 | if (output_bfd != NULL) | |
2289 | { | |
2290 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2291 | return bfd_reloc_continue; | |
2292 | } | |
2293 | ||
2294 | return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto, | |
2295 | input_section, | |
2296 | data, reloc_entry->address, | |
2297 | symbol->section, | |
2298 | (symbol->value | |
2299 | + symbol->section->output_section->vma | |
2300 | + symbol->section->output_offset), | |
2301 | reloc_entry->addend); | |
2302 | } | |
2303 | ||
2304 | /* Utility to actually perform an R_NDS32_9_PCREL reloc. */ | |
2305 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) | |
2306 | ||
2307 | static bfd_reloc_status_type | |
2308 | nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto, | |
2309 | asection *input_section, bfd_byte *data, | |
1c8f6a4d KLC |
2310 | bfd_vma offset, |
2311 | asection *symbol_section ATTRIBUTE_UNUSED, | |
35c08157 KLC |
2312 | bfd_vma symbol_value, bfd_vma addend) |
2313 | { | |
2314 | bfd_signed_vma relocation; | |
2315 | unsigned short x; | |
2316 | bfd_reloc_status_type status; | |
2317 | ||
2318 | /* Sanity check the address (offset in section). */ | |
2319 | if (offset > bfd_get_section_limit (abfd, input_section)) | |
2320 | return bfd_reloc_outofrange; | |
2321 | ||
2322 | relocation = symbol_value + addend; | |
2323 | /* Make it pc relative. */ | |
2324 | relocation -= (input_section->output_section->vma | |
2325 | + input_section->output_offset); | |
2326 | /* These jumps mask off the lower two bits of the current address | |
2327 | before doing pcrel calculations. */ | |
2328 | relocation -= (offset & -(bfd_vma) 2); | |
2329 | ||
1c8f6a4d | 2330 | if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1) |
35c08157 KLC |
2331 | status = bfd_reloc_overflow; |
2332 | else | |
2333 | status = bfd_reloc_ok; | |
2334 | ||
2335 | x = bfd_getb16 (data + offset); | |
2336 | ||
2337 | relocation >>= howto->rightshift; | |
2338 | relocation <<= howto->bitpos; | |
2339 | x = (x & ~howto->dst_mask) | |
2340 | | (((x & howto->src_mask) + relocation) & howto->dst_mask); | |
2341 | ||
2342 | bfd_putb16 ((bfd_vma) x, data + offset); | |
2343 | ||
2344 | return status; | |
2345 | } | |
2346 | ||
2347 | /* Handle the R_NDS32_HI20_[SU]LO relocs. | |
2348 | HI20_SLO is for the add3 and load/store with displacement instructions. | |
2349 | HI20 is for the or3 instruction. | |
2350 | For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to | |
2351 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then | |
2352 | we must add one to the high 16 bytes (which will get subtracted off when | |
2353 | the low 16 bits are added). | |
2354 | These relocs have to be done in combination with an R_NDS32_LO12 reloc | |
2355 | because there is a carry from the LO12 to the HI20. Here we just save | |
2356 | the information we need; we do the actual relocation when we see the LO12. | |
2357 | This code is copied from the elf32-mips.c. We also support an arbitrary | |
2358 | number of HI20 relocs to be associated with a single LO12 reloc. The | |
2359 | assembler sorts the relocs to ensure each HI20 immediately precedes its | |
2360 | LO12. However if there are multiple copies, the assembler may not find | |
2361 | the real LO12 so it picks the first one it finds. */ | |
2362 | ||
2363 | struct nds32_hi20 | |
2364 | { | |
2365 | struct nds32_hi20 *next; | |
2366 | bfd_byte *addr; | |
2367 | bfd_vma addend; | |
2368 | }; | |
2369 | ||
2370 | static struct nds32_hi20 *nds32_hi20_list; | |
2371 | ||
2372 | static bfd_reloc_status_type | |
2373 | nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2374 | asymbol *symbol, void *data, asection *input_section, | |
2375 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2376 | { | |
2377 | bfd_reloc_status_type ret; | |
2378 | bfd_vma relocation; | |
2379 | struct nds32_hi20 *n; | |
2380 | ||
2381 | /* This part is from bfd_elf_generic_reloc. | |
2382 | If we're relocating, and this an external symbol, we don't want | |
2383 | to change anything. */ | |
2384 | if (output_bfd != (bfd *) NULL | |
2385 | && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) | |
2386 | { | |
2387 | reloc_entry->address += input_section->output_offset; | |
2388 | return bfd_reloc_ok; | |
2389 | } | |
2390 | ||
2391 | /* Sanity check the address (offset in section). */ | |
2392 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
2393 | return bfd_reloc_outofrange; | |
2394 | ||
2395 | ret = bfd_reloc_ok; | |
2396 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2397 | ret = bfd_reloc_undefined; | |
2398 | ||
2399 | if (bfd_is_com_section (symbol->section)) | |
2400 | relocation = 0; | |
2401 | else | |
2402 | relocation = symbol->value; | |
2403 | ||
2404 | relocation += symbol->section->output_section->vma; | |
2405 | relocation += symbol->section->output_offset; | |
2406 | relocation += reloc_entry->addend; | |
2407 | ||
2408 | /* Save the information, and let LO12 do the actual relocation. */ | |
2409 | n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
2410 | if (n == NULL) | |
2411 | return bfd_reloc_outofrange; | |
2412 | ||
2413 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
2414 | n->addend = relocation; | |
2415 | n->next = nds32_hi20_list; | |
2416 | nds32_hi20_list = n; | |
2417 | ||
2418 | if (output_bfd != (bfd *) NULL) | |
2419 | reloc_entry->address += input_section->output_offset; | |
2420 | ||
2421 | return ret; | |
2422 | } | |
2423 | ||
2424 | /* Handle an NDS32 ELF HI20 reloc. */ | |
2425 | ||
2426 | static void | |
2427 | nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED, | |
2428 | int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi, | |
2429 | Elf_Internal_Rela *rello, bfd_byte *contents, | |
2430 | bfd_vma addend) | |
2431 | { | |
2432 | unsigned long insn; | |
2433 | bfd_vma addlo; | |
2434 | ||
2435 | insn = bfd_getb32 (contents + relhi->r_offset); | |
2436 | ||
2437 | addlo = bfd_getb32 (contents + rello->r_offset); | |
2438 | addlo &= 0xfff; | |
2439 | ||
2440 | addend += ((insn & 0xfffff) << 20) + addlo; | |
2441 | ||
2442 | insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff); | |
2443 | bfd_putb32 (insn, contents + relhi->r_offset); | |
2444 | } | |
2445 | ||
2446 | /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit | |
2447 | inplace relocation; this function exists in order to do the | |
2448 | R_NDS32_HI20_[SU]LO relocation described above. */ | |
2449 | ||
2450 | static bfd_reloc_status_type | |
2451 | nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol, | |
2452 | void *data, asection *input_section, bfd *output_bfd, | |
2453 | char **error_message) | |
2454 | { | |
2455 | /* This part is from bfd_elf_generic_reloc. | |
2456 | If we're relocating, and this an external symbol, we don't want | |
2457 | to change anything. */ | |
2458 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2459 | && reloc_entry->addend == 0) | |
2460 | { | |
2461 | reloc_entry->address += input_section->output_offset; | |
2462 | return bfd_reloc_ok; | |
2463 | } | |
2464 | ||
2465 | if (nds32_hi20_list != NULL) | |
2466 | { | |
2467 | struct nds32_hi20 *l; | |
2468 | ||
2469 | l = nds32_hi20_list; | |
2470 | while (l != NULL) | |
2471 | { | |
2472 | unsigned long insn; | |
2473 | unsigned long val; | |
2474 | unsigned long vallo; | |
2475 | struct nds32_hi20 *next; | |
2476 | ||
2477 | /* Do the HI20 relocation. Note that we actually don't need | |
2478 | to know anything about the LO12 itself, except where to | |
2479 | find the low 12 bits of the addend needed by the LO12. */ | |
2480 | insn = bfd_getb32 (l->addr); | |
2481 | vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address); | |
2482 | vallo &= 0xfff; | |
2483 | switch (reloc_entry->howto->type) | |
2484 | { | |
2485 | case R_NDS32_LO12S3: | |
2486 | vallo <<= 3; | |
2487 | break; | |
2488 | ||
2489 | case R_NDS32_LO12S2: | |
2490 | vallo <<= 2; | |
2491 | break; | |
2492 | ||
2493 | case R_NDS32_LO12S1: | |
2494 | vallo <<= 1; | |
2495 | break; | |
2496 | ||
2497 | case R_NDS32_LO12S0: | |
2498 | vallo <<= 0; | |
2499 | break; | |
2500 | } | |
2501 | ||
2502 | val = ((insn & 0xfffff) << 12) + vallo; | |
2503 | val += l->addend; | |
2504 | ||
2505 | insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff); | |
2506 | bfd_putb32 ((bfd_vma) insn, l->addr); | |
2507 | ||
2508 | next = l->next; | |
2509 | free (l); | |
2510 | l = next; | |
2511 | } | |
2512 | ||
2513 | nds32_hi20_list = NULL; | |
2514 | } | |
2515 | ||
2516 | /* Now do the LO12 reloc in the usual way. | |
2517 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2518 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2519 | pass the handling back to bfd_install_relocation which will install | |
2520 | a section relative addend which is wrong. */ | |
2521 | return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, | |
2522 | input_section, output_bfd, error_message); | |
2523 | } | |
2524 | ||
2525 | /* Do generic partial_inplace relocation. | |
2526 | This is a local replacement for bfd_elf_generic_reloc. */ | |
2527 | ||
2528 | static bfd_reloc_status_type | |
2529 | nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry, | |
2530 | asymbol *symbol, void *data, asection *input_section, | |
2531 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2532 | { | |
2533 | bfd_reloc_status_type ret; | |
2534 | bfd_vma relocation; | |
2535 | bfd_byte *inplace_address; | |
2536 | ||
2537 | /* This part is from bfd_elf_generic_reloc. | |
2538 | If we're relocating, and this an external symbol, we don't want | |
2539 | to change anything. */ | |
2540 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2541 | && reloc_entry->addend == 0) | |
2542 | { | |
2543 | reloc_entry->address += input_section->output_offset; | |
2544 | return bfd_reloc_ok; | |
2545 | } | |
2546 | ||
2547 | /* Now do the reloc in the usual way. | |
2548 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2549 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2550 | pass the handling back to bfd_install_relocation which will install | |
2551 | a section relative addend which is wrong. */ | |
2552 | ||
2553 | /* Sanity check the address (offset in section). */ | |
2554 | if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) | |
2555 | return bfd_reloc_outofrange; | |
2556 | ||
2557 | ret = bfd_reloc_ok; | |
2558 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2559 | ret = bfd_reloc_undefined; | |
2560 | ||
2561 | if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL) | |
2562 | relocation = 0; | |
2563 | else | |
2564 | relocation = symbol->value; | |
2565 | ||
2566 | /* Only do this for a final link. */ | |
2567 | if (output_bfd == (bfd *) NULL) | |
2568 | { | |
2569 | relocation += symbol->section->output_section->vma; | |
2570 | relocation += symbol->section->output_offset; | |
2571 | } | |
2572 | ||
2573 | relocation += reloc_entry->addend; | |
2574 | switch (reloc_entry->howto->type) | |
2575 | { | |
2576 | case R_NDS32_LO12S3: | |
2577 | relocation >>= 3; | |
2578 | break; | |
2579 | ||
2580 | case R_NDS32_LO12S2: | |
2581 | relocation >>= 2; | |
2582 | break; | |
2583 | ||
2584 | case R_NDS32_LO12S1: | |
2585 | relocation >>= 1; | |
2586 | break; | |
2587 | ||
2588 | case R_NDS32_LO12S0: | |
2589 | default: | |
2590 | relocation >>= 0; | |
2591 | break; | |
2592 | } | |
2593 | ||
2594 | inplace_address = (bfd_byte *) data + reloc_entry->address; | |
2595 | ||
2596 | #define DOIT(x) \ | |
2597 | x = ((x & ~reloc_entry->howto->dst_mask) | \ | |
2598 | (((x & reloc_entry->howto->src_mask) + relocation) & \ | |
2599 | reloc_entry->howto->dst_mask)) | |
2600 | ||
2601 | switch (reloc_entry->howto->size) | |
2602 | { | |
2603 | case 1: | |
2604 | { | |
2605 | short x = bfd_getb16 (inplace_address); | |
2606 | ||
2607 | DOIT (x); | |
2608 | bfd_putb16 ((bfd_vma) x, inplace_address); | |
2609 | } | |
2610 | break; | |
2611 | case 2: | |
2612 | { | |
2613 | unsigned long x = bfd_getb32 (inplace_address); | |
2614 | ||
2615 | DOIT (x); | |
2616 | bfd_putb32 ((bfd_vma) x, inplace_address); | |
2617 | } | |
2618 | break; | |
2619 | default: | |
2620 | BFD_ASSERT (0); | |
2621 | } | |
2622 | ||
2623 | if (output_bfd != (bfd *) NULL) | |
2624 | reloc_entry->address += input_section->output_offset; | |
2625 | ||
2626 | return ret; | |
2627 | } | |
2628 | ||
2629 | /* Handle the R_NDS32_SDA15 reloc. | |
2630 | This reloc is used to compute the address of objects in the small data area | |
2631 | and to perform loads and stores from that area. | |
2632 | The lower 15 bits are sign extended and added to the register specified | |
2633 | in the instruction, which is assumed to point to _SDA_BASE_. | |
2634 | ||
2635 | Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on | |
2636 | the access size, this must be taken care of. */ | |
2637 | ||
2638 | static bfd_reloc_status_type | |
2639 | nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2640 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2641 | asection *input_section, bfd *output_bfd, | |
2642 | char **error_message ATTRIBUTE_UNUSED) | |
2643 | { | |
2644 | /* This part is from bfd_elf_generic_reloc. */ | |
2645 | if (output_bfd != (bfd *) NULL | |
2646 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2647 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2648 | { | |
2649 | reloc_entry->address += input_section->output_offset; | |
2650 | return bfd_reloc_ok; | |
2651 | } | |
2652 | ||
2653 | if (output_bfd != NULL) | |
2654 | { | |
2655 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2656 | return bfd_reloc_continue; | |
2657 | } | |
2658 | ||
2659 | /* FIXME: not sure what to do here yet. But then again, the linker | |
2660 | may never call us. */ | |
2661 | abort (); | |
2662 | } | |
2663 | ||
2664 | /* nds32_elf_ignore_reloc is the special function for | |
2665 | relocation types which don't need to be relocated | |
2666 | like relaxation relocation types. | |
2667 | This function simply return bfd_reloc_ok when it is | |
2668 | invoked. */ | |
2669 | ||
2670 | static bfd_reloc_status_type | |
2671 | nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2672 | asymbol *symbol ATTRIBUTE_UNUSED, | |
2673 | void *data ATTRIBUTE_UNUSED, asection *input_section, | |
2674 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2675 | { | |
2676 | if (output_bfd != NULL) | |
2677 | reloc_entry->address += input_section->output_offset; | |
2678 | ||
2679 | return bfd_reloc_ok; | |
2680 | } | |
2681 | \f | |
2682 | ||
2683 | /* Map BFD reloc types to NDS32 ELF reloc types. */ | |
2684 | ||
2685 | struct nds32_reloc_map_entry | |
2686 | { | |
2687 | bfd_reloc_code_real_type bfd_reloc_val; | |
2688 | unsigned char elf_reloc_val; | |
2689 | }; | |
2690 | ||
2691 | static const struct nds32_reloc_map_entry nds32_reloc_map[] = | |
2692 | { | |
2693 | {BFD_RELOC_NONE, R_NDS32_NONE}, | |
2694 | {BFD_RELOC_16, R_NDS32_16_RELA}, | |
2695 | {BFD_RELOC_32, R_NDS32_32_RELA}, | |
2696 | {BFD_RELOC_NDS32_20, R_NDS32_20_RELA}, | |
2697 | {BFD_RELOC_NDS32_5, R_NDS32_5_RELA}, | |
2698 | {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA}, | |
2699 | {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA}, | |
2700 | {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA}, | |
2701 | {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA}, | |
2702 | {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA}, | |
2703 | {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA}, | |
2704 | {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA}, | |
2705 | {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA}, | |
2706 | {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA}, | |
2707 | {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA}, | |
2708 | {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA}, | |
2709 | {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA}, | |
2710 | {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA}, | |
2711 | {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA}, | |
2712 | {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA}, | |
2713 | {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA}, | |
2714 | {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT}, | |
2715 | {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY}, | |
2716 | ||
2717 | {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20}, | |
2718 | {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL}, | |
2719 | {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL}, | |
2720 | {BFD_RELOC_NDS32_COPY, R_NDS32_COPY}, | |
2721 | {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT}, | |
2722 | {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT}, | |
2723 | {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE}, | |
2724 | {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF}, | |
2725 | {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20}, | |
2726 | {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20}, | |
2727 | {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12}, | |
2728 | {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15}, | |
2729 | {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19}, | |
2730 | {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20}, | |
2731 | {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12}, | |
2732 | {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20}, | |
2733 | {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12}, | |
2734 | {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15}, | |
2735 | {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19}, | |
2736 | {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16}, | |
2737 | {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL}, | |
2738 | {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1}, | |
2739 | {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2}, | |
2740 | {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3}, | |
1c8f6a4d KLC |
2741 | {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4}, |
2742 | {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5}, | |
2743 | {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6}, | |
35c08157 KLC |
2744 | {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1}, |
2745 | {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2}, | |
2746 | {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3}, | |
1c8f6a4d KLC |
2747 | {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4}, |
2748 | {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5}, | |
2749 | {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6}, | |
2750 | {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7}, | |
35c08157 KLC |
2751 | {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE}, |
2752 | {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA}, | |
2753 | {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA}, | |
2754 | {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA}, | |
2755 | {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA}, | |
2756 | {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20}, | |
2757 | {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12}, | |
2758 | {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20}, | |
2759 | {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12}, | |
2760 | {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15}, | |
2761 | {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19}, | |
2762 | {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20}, | |
2763 | {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA}, | |
2764 | {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA}, | |
2765 | {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA}, | |
2766 | {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA}, | |
2767 | {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA}, | |
2768 | {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA}, | |
2769 | {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA}, | |
2770 | {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA}, | |
2771 | {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA}, | |
2772 | {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA}, | |
2773 | {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA}, | |
2774 | {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA}, | |
2775 | {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA}, | |
2776 | {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF}, | |
2777 | {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF}, | |
2778 | {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA}, | |
2779 | {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA}, | |
2780 | {BFD_RELOC_NDS32_PTR, R_NDS32_PTR}, | |
2781 | {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT}, | |
2782 | {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF}, | |
2783 | {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED}, | |
2784 | {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY}, | |
2785 | {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF}, | |
2786 | {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK}, | |
2787 | {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN}, | |
2788 | {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END}, | |
2789 | {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND}, | |
2790 | {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND}, | |
1c8f6a4d | 2791 | {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY}, |
35c08157 KLC |
2792 | |
2793 | {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8}, | |
2794 | {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16}, | |
2795 | {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32}, | |
2796 | {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128}, | |
2797 | {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA}, | |
2798 | {BFD_RELOC_NDS32_DATA, R_NDS32_DATA}, | |
2799 | {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN}, | |
2800 | {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA}, | |
2801 | {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA}, | |
1c8f6a4d KLC |
2802 | {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20}, |
2803 | {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12}, | |
2804 | {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD}, | |
2805 | {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS}, | |
2806 | {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20}, | |
2807 | {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2}, | |
2808 | {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF}, | |
2809 | {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20}, | |
2810 | {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0}, | |
2811 | {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1}, | |
2812 | {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2}, | |
35c08157 KLC |
2813 | }; |
2814 | ||
2815 | /* Patch tag. */ | |
2816 | ||
2817 | static reloc_howto_type * | |
2818 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2819 | const char *r_name) | |
2820 | { | |
2821 | unsigned int i; | |
2822 | ||
2823 | for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++) | |
2824 | if (nds32_elf_howto_table[i].name != NULL | |
2825 | && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0) | |
2826 | return &nds32_elf_howto_table[i]; | |
2827 | ||
2828 | for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++) | |
2829 | if (nds32_elf_relax_howto_table[i].name != NULL | |
2830 | && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0) | |
2831 | return &nds32_elf_relax_howto_table[i]; | |
2832 | ||
2833 | return NULL; | |
2834 | } | |
2835 | ||
2836 | static reloc_howto_type * | |
2837 | bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code) | |
2838 | { | |
2839 | if (code < R_NDS32_RELAX_ENTRY) | |
2840 | { | |
2841 | BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table)); | |
2842 | return &nds32_elf_howto_table[code]; | |
2843 | } | |
2844 | else | |
2845 | { | |
2846 | BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY) | |
2847 | < ARRAY_SIZE (nds32_elf_relax_howto_table)); | |
2848 | return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY]; | |
2849 | } | |
2850 | } | |
2851 | ||
2852 | static reloc_howto_type * | |
2853 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2854 | bfd_reloc_code_real_type code) | |
2855 | { | |
2856 | unsigned int i; | |
2857 | ||
2858 | for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++) | |
2859 | { | |
2860 | if (nds32_reloc_map[i].bfd_reloc_val == code) | |
2861 | return bfd_elf32_bfd_reloc_type_table_lookup | |
2862 | (nds32_reloc_map[i].elf_reloc_val); | |
2863 | } | |
2864 | ||
2865 | return NULL; | |
2866 | } | |
2867 | ||
2868 | /* Set the howto pointer for an NDS32 ELF reloc. */ | |
2869 | ||
f3185997 NC |
2870 | static bfd_boolean |
2871 | nds32_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, | |
35c08157 KLC |
2872 | Elf_Internal_Rela *dst) |
2873 | { | |
2874 | enum elf_nds32_reloc_type r_type; | |
2875 | ||
2876 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
2877 | if (r_type > R_NDS32_GNU_VTENTRY) |
2878 | { | |
695344c0 | 2879 | /* xgettext:c-format */ |
0aa13fee AM |
2880 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
2881 | abfd, r_type); | |
f3185997 NC |
2882 | bfd_set_error (bfd_error_bad_value); |
2883 | return FALSE; | |
5860e3f8 | 2884 | } |
35c08157 | 2885 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); |
f3185997 | 2886 | return TRUE; |
35c08157 KLC |
2887 | } |
2888 | ||
f3185997 | 2889 | static bfd_boolean |
35c08157 KLC |
2890 | nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
2891 | Elf_Internal_Rela *dst) | |
2892 | { | |
f3185997 NC |
2893 | unsigned int r_type = ELF32_R_TYPE (dst->r_info); |
2894 | ||
2895 | if ((r_type == R_NDS32_NONE) | |
2896 | || ((r_type > R_NDS32_GNU_VTENTRY) | |
2897 | && (r_type < R_NDS32_max))) | |
2898 | { | |
2899 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); | |
2900 | return TRUE; | |
2901 | } | |
2902 | ||
2903 | /* xgettext:c-format */ | |
2904 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r_type); | |
2905 | bfd_set_error (bfd_error_bad_value); | |
2906 | return FALSE; | |
35c08157 KLC |
2907 | } |
2908 | ||
2909 | /* Support for core dump NOTE sections. | |
2910 | Reference to include/linux/elfcore.h in Linux. */ | |
2911 | ||
2912 | static bfd_boolean | |
2913 | nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2914 | { | |
2915 | int offset; | |
2916 | size_t size; | |
2917 | ||
2918 | switch (note->descsz) | |
2919 | { | |
2920 | case 0x114: | |
2921 | /* Linux/NDS32 32-bit, ABI1 */ | |
2922 | ||
2923 | /* pr_cursig */ | |
2924 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2925 | ||
2926 | /* pr_pid */ | |
2927 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
2928 | ||
2929 | /* pr_reg */ | |
2930 | offset = 72; | |
2931 | size = 200; | |
2932 | break; | |
2933 | ||
2934 | case 0xfc: | |
2935 | /* Linux/NDS32 32-bit */ | |
2936 | ||
2937 | /* pr_cursig */ | |
2938 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2939 | ||
2940 | /* pr_pid */ | |
2941 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
2942 | ||
2943 | /* pr_reg */ | |
2944 | offset = 72; | |
2945 | size = 176; | |
2946 | break; | |
2947 | ||
2948 | default: | |
2949 | return FALSE; | |
2950 | } | |
2951 | ||
2952 | /* Make a ".reg" section. */ | |
2953 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
2954 | size, note->descpos + offset); | |
2955 | } | |
2956 | ||
2957 | static bfd_boolean | |
2958 | nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
2959 | { | |
2960 | switch (note->descsz) | |
2961 | { | |
2962 | case 124: | |
2963 | /* Linux/NDS32 */ | |
2964 | ||
2965 | /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */ | |
2966 | elf_tdata (abfd)->core->program = | |
2967 | _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
2968 | elf_tdata (abfd)->core->command = | |
2969 | _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
2b804145 | 2970 | break; |
35c08157 KLC |
2971 | |
2972 | default: | |
2973 | return FALSE; | |
2974 | } | |
2975 | ||
2976 | /* Note that for some reason, a spurious space is tacked | |
2977 | onto the end of the args in some (at least one anyway) | |
2978 | implementations, so strip it off if it exists. */ | |
2979 | { | |
2980 | char *command = elf_tdata (abfd)->core->command; | |
2981 | int n = strlen (command); | |
2982 | ||
2983 | if (0 < n && command[n - 1] == ' ') | |
2984 | command[n - 1] = '\0'; | |
2985 | } | |
2986 | ||
2987 | return TRUE; | |
2988 | } | |
2989 | ||
2990 | /* Hook called by the linker routine which adds symbols from an object | |
2991 | file. We must handle the special NDS32 section numbers here. | |
2992 | We also keep watching for whether we need to create the sdata special | |
2993 | linker sections. */ | |
2994 | ||
2995 | static bfd_boolean | |
2996 | nds32_elf_add_symbol_hook (bfd *abfd, | |
2997 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2998 | Elf_Internal_Sym *sym, | |
2999 | const char **namep ATTRIBUTE_UNUSED, | |
3000 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3001 | asection **secp, bfd_vma *valp) | |
3002 | { | |
3003 | switch (sym->st_shndx) | |
3004 | { | |
3005 | case SHN_COMMON: | |
3006 | /* Common symbols less than the GP size are automatically | |
3007 | treated as SHN_MIPS_SCOMMON symbols. */ | |
3008 | if (sym->st_size > elf_gp_size (abfd) | |
3009 | || ELF_ST_TYPE (sym->st_info) == STT_TLS) | |
3010 | break; | |
3011 | ||
3012 | /* st_value is the alignemnt constraint. | |
3013 | That might be its actual size if it is an array or structure. */ | |
3014 | switch (sym->st_value) | |
3015 | { | |
3016 | case 1: | |
3017 | *secp = bfd_make_section_old_way (abfd, ".scommon_b"); | |
3018 | break; | |
3019 | case 2: | |
3020 | *secp = bfd_make_section_old_way (abfd, ".scommon_h"); | |
3021 | break; | |
3022 | case 4: | |
3023 | *secp = bfd_make_section_old_way (abfd, ".scommon_w"); | |
3024 | break; | |
3025 | case 8: | |
3026 | *secp = bfd_make_section_old_way (abfd, ".scommon_d"); | |
3027 | break; | |
3028 | default: | |
3029 | return TRUE; | |
3030 | } | |
3031 | ||
3032 | (*secp)->flags |= SEC_IS_COMMON; | |
3033 | *valp = sym->st_size; | |
3034 | break; | |
3035 | } | |
3036 | ||
3037 | return TRUE; | |
3038 | } | |
3039 | ||
3040 | ||
3041 | /* This function can figure out the best location for a base register to access | |
3042 | data relative to this base register | |
3043 | INPUT: | |
3044 | sda_d0: size of first DOUBLE WORD data section | |
3045 | sda_w0: size of first WORD data section | |
3046 | sda_h0: size of first HALF WORD data section | |
3047 | sda_b : size of BYTE data section | |
3048 | sda_hi: size of second HALF WORD data section | |
3049 | sda_w1: size of second WORD data section | |
3050 | sda_d1: size of second DOUBLE WORD data section | |
3051 | OUTPUT: | |
3052 | offset (always positive) from the beginning of sda_d0 if OK | |
3053 | a negative error value if fail | |
3054 | NOTE: | |
3055 | these 7 sections have to be located back to back if exist | |
3056 | a pass in 0 value for non-existing section */ | |
3057 | ||
3058 | /* Due to the interpretation of simm15 field of load/store depending on | |
3059 | data accessing size, the organization of base register relative data shall | |
3060 | like the following figure | |
3061 | ------------------------------------------- | |
3062 | | DOUBLE WORD sized data (range +/- 128K) | |
3063 | ------------------------------------------- | |
3064 | | WORD sized data (range +/- 64K) | |
3065 | ------------------------------------------- | |
3066 | | HALF WORD sized data (range +/- 32K) | |
3067 | ------------------------------------------- | |
3068 | | BYTE sized data (range +/- 16K) | |
3069 | ------------------------------------------- | |
3070 | | HALF WORD sized data (range +/- 32K) | |
3071 | ------------------------------------------- | |
3072 | | WORD sized data (range +/- 64K) | |
3073 | ------------------------------------------- | |
3074 | | DOUBLE WORD sized data (range +/- 128K) | |
3075 | ------------------------------------------- | |
3076 | Its base register shall be set to access these data freely. */ | |
3077 | ||
3078 | /* We have to figure out the SDA_BASE value, so that we can adjust the | |
3079 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output | |
3080 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
3081 | target data. We don't need to adjust the symbol value for an | |
3082 | external symbol if we are producing relocatable output. */ | |
3083 | ||
3084 | static asection *sda_rela_sec = NULL; | |
3085 | ||
1c8f6a4d | 3086 | #define SDA_SECTION_NUM 10 |
35c08157 KLC |
3087 | |
3088 | static bfd_reloc_status_type | |
3089 | nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info, | |
3090 | bfd_vma *psb, bfd_boolean add_symbol) | |
3091 | { | |
3092 | int relax_fp_as_gp; | |
3093 | struct elf_nds32_link_hash_table *table; | |
3094 | struct bfd_link_hash_entry *h, *h2; | |
1c8f6a4d | 3095 | long unsigned int total = 0; |
35c08157 KLC |
3096 | |
3097 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); | |
3098 | if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak)) | |
3099 | { | |
3100 | asection *first = NULL, *final = NULL, *temp; | |
3101 | bfd_vma sda_base; | |
3102 | /* The first section must be 4-byte aligned to promise _SDA_BASE_ being | |
3103 | 4 byte-aligned. Therefore, it has to set the first section ".data" | |
3104 | 4 byte-aligned. */ | |
3105 | static const char sec_name[SDA_SECTION_NUM][10] = | |
3106 | { | |
3107 | ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b", | |
1c8f6a4d | 3108 | ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d" |
35c08157 KLC |
3109 | }; |
3110 | size_t i = 0; | |
3111 | ||
3112 | if (output_bfd->sections == NULL) | |
3113 | { | |
3114 | *psb = elf_gp (output_bfd); | |
3115 | return bfd_reloc_ok; | |
3116 | } | |
3117 | ||
3118 | /* Get the first and final section. */ | |
1c8f6a4d | 3119 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3120 | { |
3121 | temp = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3122 | if (temp && !first && (temp->size != 0 || temp->rawsize != 0)) | |
3123 | first = temp; | |
3124 | if (temp && (temp->size != 0 || temp->rawsize != 0)) | |
3125 | final = temp; | |
1c8f6a4d KLC |
3126 | |
3127 | /* Summarize the sections in order to check if joining .bss. */ | |
3128 | if (temp && temp->size != 0) | |
3129 | total += temp->size; | |
3130 | else if (temp && temp->rawsize != 0) | |
3131 | total += temp->rawsize; | |
3132 | ||
35c08157 KLC |
3133 | i++; |
3134 | } | |
3135 | ||
1c8f6a4d KLC |
3136 | /* Check .bss size. */ |
3137 | temp = bfd_get_section_by_name (output_bfd, ".bss"); | |
3138 | if (temp) | |
3139 | { | |
3140 | if (temp->size != 0) | |
3141 | total += temp->size; | |
3142 | else if (temp->rawsize != 0) | |
3143 | total += temp->rawsize; | |
3144 | ||
3145 | if (total < 0x80000) | |
3146 | { | |
3147 | if (!first && (temp->size != 0 || temp->rawsize != 0)) | |
3148 | first = temp; | |
3149 | if ((temp->size != 0 || temp->rawsize != 0)) | |
3150 | final = temp; | |
3151 | } | |
3152 | } | |
3153 | ||
35c08157 KLC |
3154 | if (first && final) |
3155 | { | |
3156 | /* The middle of data region. */ | |
1c8f6a4d | 3157 | sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2; |
35c08157 KLC |
3158 | |
3159 | /* Find the section sda_base located. */ | |
3160 | i = 0; | |
1c8f6a4d | 3161 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3162 | { |
3163 | final = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3164 | if (final && (final->size != 0 || final->rawsize != 0) | |
3165 | && sda_base >= final->vma) | |
3166 | { | |
3167 | first = final; | |
3168 | i++; | |
3169 | } | |
3170 | else | |
3171 | break; | |
3172 | } | |
3173 | } | |
3174 | else | |
3175 | { | |
3176 | /* There is not any data section in output bfd, and set _SDA_BASE_ in | |
3177 | first output section. */ | |
3178 | first = output_bfd->sections; | |
3179 | while (first && first->size == 0 && first->rawsize == 0) | |
3180 | first = first->next; | |
3181 | if (!first) | |
3182 | { | |
3183 | *psb = elf_gp (output_bfd); | |
3184 | return bfd_reloc_ok; | |
3185 | } | |
1c8f6a4d | 3186 | sda_base = first->vma + first->rawsize; |
35c08157 KLC |
3187 | } |
3188 | ||
3189 | sda_base -= first->vma; | |
3190 | sda_base = sda_base & (~7); | |
3191 | ||
3192 | if (!_bfd_generic_link_add_one_symbol | |
3193 | (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first, | |
3194 | (bfd_vma) sda_base, (const char *) NULL, FALSE, | |
3195 | get_elf_backend_data (output_bfd)->collect, &h)) | |
3196 | return FALSE; | |
3197 | ||
3198 | sda_rela_sec = first; | |
3199 | ||
3200 | table = nds32_elf_hash_table (info); | |
3201 | relax_fp_as_gp = table->relax_fp_as_gp; | |
3202 | if (relax_fp_as_gp) | |
3203 | { | |
3204 | h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME, | |
3205 | FALSE, FALSE, FALSE); | |
3206 | /* Define a weak FP_BASE_NAME here to prevent the undefined symbol. | |
3207 | And set FP equal to SDA_BASE to do relaxation for | |
3208 | la $fp, _FP_BASE_. */ | |
3209 | if (!_bfd_generic_link_add_one_symbol | |
3210 | (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK, | |
3211 | first, (bfd_vma) sda_base, (const char *) NULL, | |
3212 | FALSE, get_elf_backend_data (output_bfd)->collect, &h2)) | |
3213 | return FALSE; | |
3214 | } | |
3215 | } | |
3216 | ||
535b785f | 3217 | if (add_symbol) |
35c08157 KLC |
3218 | { |
3219 | if (h) | |
3220 | { | |
3221 | /* Now set gp. */ | |
3222 | elf_gp (output_bfd) = (h->u.def.value | |
3223 | + h->u.def.section->output_section->vma | |
3224 | + h->u.def.section->output_offset); | |
3225 | } | |
3226 | else | |
3227 | { | |
38f14ab8 | 3228 | _bfd_error_handler (_("error: can't find symbol: %s"), "_SDA_BASE_"); |
35c08157 KLC |
3229 | return bfd_reloc_dangerous; |
3230 | } | |
3231 | } | |
3232 | ||
3233 | *psb = h->u.def.value + h->u.def.section->output_section->vma | |
3234 | + h->u.def.section->output_offset; | |
3235 | return bfd_reloc_ok; | |
3236 | } | |
3237 | \f | |
3238 | ||
3239 | /* Return size of a PLT entry. */ | |
3240 | #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE | |
3241 | ||
3242 | ||
3243 | /* Create an entry in an nds32 ELF linker hash table. */ | |
3244 | ||
3245 | static struct bfd_hash_entry * | |
3246 | nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3247 | struct bfd_hash_table *table, | |
3248 | const char *string) | |
3249 | { | |
3250 | struct elf_nds32_link_hash_entry *ret; | |
3251 | ||
3252 | ret = (struct elf_nds32_link_hash_entry *) entry; | |
3253 | ||
3254 | /* Allocate the structure if it has not already been allocated by a | |
3255 | subclass. */ | |
3256 | if (ret == NULL) | |
3257 | ret = (struct elf_nds32_link_hash_entry *) | |
3258 | bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry)); | |
3259 | ||
3260 | if (ret == NULL) | |
3261 | return (struct bfd_hash_entry *) ret; | |
3262 | ||
3263 | /* Call the allocation method of the superclass. */ | |
3264 | ret = (struct elf_nds32_link_hash_entry *) | |
3265 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
3266 | ||
3267 | if (ret != NULL) | |
3268 | { | |
3269 | struct elf_nds32_link_hash_entry *eh; | |
3270 | ||
3271 | eh = (struct elf_nds32_link_hash_entry *) ret; | |
3272 | eh->dyn_relocs = NULL; | |
1c8f6a4d | 3273 | eh->tls_type = GOT_UNKNOWN; |
35c08157 KLC |
3274 | } |
3275 | ||
3276 | return (struct bfd_hash_entry *) ret; | |
3277 | } | |
3278 | ||
3279 | /* Create an nds32 ELF linker hash table. */ | |
3280 | ||
3281 | static struct bfd_link_hash_table * | |
3282 | nds32_elf_link_hash_table_create (bfd *abfd) | |
3283 | { | |
3284 | struct elf_nds32_link_hash_table *ret; | |
3285 | ||
3286 | bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table); | |
3287 | ||
3288 | ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt); | |
3289 | if (ret == NULL) | |
3290 | return NULL; | |
3291 | ||
3292 | /* patch tag. */ | |
3293 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3294 | nds32_elf_link_hash_newfunc, | |
3295 | sizeof (struct elf_nds32_link_hash_entry), | |
3296 | NDS32_ELF_DATA)) | |
3297 | { | |
3298 | free (ret); | |
3299 | return NULL; | |
3300 | } | |
3301 | ||
35c08157 KLC |
3302 | return &ret->root.root; |
3303 | } | |
3304 | ||
35c08157 KLC |
3305 | /* Create dynamic sections when linking against a dynamic object. */ |
3306 | ||
3307 | static bfd_boolean | |
3308 | nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3309 | { | |
3310 | struct elf_nds32_link_hash_table *htab; | |
3311 | flagword flags, pltflags; | |
3312 | register asection *s; | |
3313 | const struct elf_backend_data *bed; | |
3314 | int ptralign = 2; /* 32-bit */ | |
3315 | ||
3316 | bed = get_elf_backend_data (abfd); | |
3317 | ||
3318 | htab = nds32_elf_hash_table (info); | |
3319 | ||
3320 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3321 | .rel[a].bss sections. */ | |
3322 | ||
3323 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3324 | | SEC_LINKER_CREATED); | |
3325 | ||
3326 | pltflags = flags; | |
3327 | pltflags |= SEC_CODE; | |
3328 | if (bed->plt_not_loaded) | |
3329 | pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS); | |
3330 | if (bed->plt_readonly) | |
3331 | pltflags |= SEC_READONLY; | |
3332 | ||
3333 | s = bfd_make_section (abfd, ".plt"); | |
ce558b89 | 3334 | htab->root.splt = s; |
35c08157 KLC |
3335 | if (s == NULL |
3336 | || !bfd_set_section_flags (abfd, s, pltflags) | |
3337 | || !bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
3338 | return FALSE; | |
3339 | ||
3340 | if (bed->want_plt_sym) | |
3341 | { | |
3342 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3343 | .plt section. */ | |
3344 | struct bfd_link_hash_entry *bh = NULL; | |
3345 | struct elf_link_hash_entry *h; | |
3346 | ||
3347 | if (!(_bfd_generic_link_add_one_symbol | |
3348 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
3349 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
3350 | get_elf_backend_data (abfd)->collect, &bh))) | |
3351 | return FALSE; | |
3352 | ||
3353 | h = (struct elf_link_hash_entry *) bh; | |
3354 | h->def_regular = 1; | |
3355 | h->type = STT_OBJECT; | |
3356 | ||
0e1862bb | 3357 | if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h)) |
35c08157 KLC |
3358 | return FALSE; |
3359 | } | |
3360 | ||
3361 | s = bfd_make_section (abfd, | |
3362 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | |
ce558b89 | 3363 | htab->root.srelplt = s; |
35c08157 KLC |
3364 | if (s == NULL |
3365 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3366 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3367 | return FALSE; | |
3368 | ||
ce558b89 | 3369 | if (htab->root.sgot == NULL && !_bfd_elf_create_got_section (abfd, info)) |
35c08157 KLC |
3370 | return FALSE; |
3371 | ||
3372 | { | |
3373 | const char *secname; | |
3374 | char *relname; | |
3375 | flagword secflags; | |
3376 | asection *sec; | |
3377 | ||
3378 | for (sec = abfd->sections; sec; sec = sec->next) | |
3379 | { | |
3380 | secflags = bfd_get_section_flags (abfd, sec); | |
3381 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
3382 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
3383 | continue; | |
3384 | secname = bfd_get_section_name (abfd, sec); | |
3385 | relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); | |
3386 | strcpy (relname, ".rela"); | |
3387 | strcat (relname, secname); | |
3388 | if (bfd_get_section_by_name (abfd, secname)) | |
3389 | continue; | |
3390 | s = bfd_make_section (abfd, relname); | |
3391 | if (s == NULL | |
3392 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3393 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3394 | return FALSE; | |
3395 | } | |
3396 | } | |
3397 | ||
3398 | if (bed->want_dynbss) | |
3399 | { | |
3400 | /* The .dynbss section is a place to put symbols which are defined | |
3401 | by dynamic objects, are referenced by regular objects, and are | |
3402 | not functions. We must allocate space for them in the process | |
3403 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3404 | initialize them at run time. The linker script puts the .dynbss | |
3405 | section into the .bss section of the final image. */ | |
3406 | s = bfd_make_section (abfd, ".dynbss"); | |
3407 | htab->sdynbss = s; | |
3408 | if (s == NULL | |
3409 | || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) | |
3410 | return FALSE; | |
3411 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3412 | normally needed. We need to create it here, though, so that the | |
3413 | linker will map it to an output section. We can't just create it | |
3414 | only if we need it, because we will not know whether we need it | |
3415 | until we have seen all the input files, and the first time the | |
3416 | main linker code calls BFD after examining all the input files | |
3417 | (size_dynamic_sections) the input sections have already been | |
3418 | mapped to the output sections. If the section turns out not to | |
3419 | be needed, we can discard it later. We will never need this | |
3420 | section when generating a shared object, since they do not use | |
3421 | copy relocs. */ | |
0e1862bb | 3422 | if (!bfd_link_pic (info)) |
35c08157 KLC |
3423 | { |
3424 | s = bfd_make_section (abfd, (bed->default_use_rela_p | |
3425 | ? ".rela.bss" : ".rel.bss")); | |
3426 | htab->srelbss = s; | |
3427 | if (s == NULL | |
3428 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3429 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3430 | return FALSE; | |
3431 | } | |
3432 | } | |
3433 | ||
3434 | return TRUE; | |
3435 | } | |
3436 | ||
3437 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
3438 | static void | |
3439 | nds32_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
3440 | struct elf_link_hash_entry *dir, | |
3441 | struct elf_link_hash_entry *ind) | |
3442 | { | |
3443 | struct elf_nds32_link_hash_entry *edir, *eind; | |
3444 | ||
3445 | edir = (struct elf_nds32_link_hash_entry *) dir; | |
3446 | eind = (struct elf_nds32_link_hash_entry *) ind; | |
3447 | ||
3448 | if (eind->dyn_relocs != NULL) | |
3449 | { | |
3450 | if (edir->dyn_relocs != NULL) | |
3451 | { | |
3bf083ed AM |
3452 | struct elf_dyn_relocs **pp; |
3453 | struct elf_dyn_relocs *p; | |
35c08157 KLC |
3454 | |
3455 | if (ind->root.type == bfd_link_hash_indirect) | |
3456 | abort (); | |
3457 | ||
3458 | /* Add reloc counts against the weak sym to the strong sym | |
3459 | list. Merge any entries against the same section. */ | |
3460 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
3461 | { | |
3bf083ed | 3462 | struct elf_dyn_relocs *q; |
35c08157 KLC |
3463 | |
3464 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3465 | if (q->sec == p->sec) | |
3466 | { | |
3467 | q->pc_count += p->pc_count; | |
3468 | q->count += p->count; | |
3469 | *pp = p->next; | |
3470 | break; | |
3471 | } | |
3472 | if (q == NULL) | |
3473 | pp = &p->next; | |
3474 | } | |
3475 | *pp = edir->dyn_relocs; | |
3476 | } | |
3477 | ||
3478 | edir->dyn_relocs = eind->dyn_relocs; | |
3479 | eind->dyn_relocs = NULL; | |
3480 | } | |
3481 | ||
3482 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3483 | } | |
3484 | \f | |
63c1f59d AM |
3485 | /* Find dynamic relocs for H that apply to read-only sections. */ |
3486 | ||
3487 | static asection * | |
3488 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
3489 | { | |
3bf083ed | 3490 | struct elf_dyn_relocs *p; |
63c1f59d AM |
3491 | |
3492 | for (p = elf32_nds32_hash_entry (h)->dyn_relocs; p != NULL; p = p->next) | |
3493 | { | |
3494 | asection *s = p->sec->output_section; | |
3495 | ||
3496 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3497 | return p->sec; | |
3498 | } | |
3499 | return NULL; | |
3500 | } | |
35c08157 KLC |
3501 | |
3502 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3503 | regular object. The current definition is in some section of the | |
3504 | dynamic object, but we're not including those sections. We have to | |
3505 | change the definition to something the rest of the link can | |
3506 | understand. */ | |
3507 | ||
3508 | static bfd_boolean | |
3509 | nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
3510 | struct elf_link_hash_entry *h) | |
3511 | { | |
3512 | struct elf_nds32_link_hash_table *htab; | |
35c08157 KLC |
3513 | bfd *dynobj; |
3514 | asection *s; | |
3515 | unsigned int power_of_two; | |
3516 | ||
3517 | dynobj = elf_hash_table (info)->dynobj; | |
3518 | ||
3519 | /* Make sure we know what is going on here. */ | |
3520 | BFD_ASSERT (dynobj != NULL | |
3521 | && (h->needs_plt | |
60d67dc8 | 3522 | || h->is_weakalias |
35c08157 KLC |
3523 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); |
3524 | ||
3525 | ||
3526 | /* If this is a function, put it in the procedure linkage table. We | |
3527 | will fill in the contents of the procedure linkage table later, | |
3528 | when we know the address of the .got section. */ | |
3529 | if (h->type == STT_FUNC || h->needs_plt) | |
3530 | { | |
0e1862bb | 3531 | if (!bfd_link_pic (info) |
35c08157 KLC |
3532 | && !h->def_dynamic |
3533 | && !h->ref_dynamic | |
3534 | && h->root.type != bfd_link_hash_undefweak | |
3535 | && h->root.type != bfd_link_hash_undefined) | |
3536 | { | |
3537 | /* This case can occur if we saw a PLT reloc in an input | |
3538 | file, but the symbol was never referred to by a dynamic | |
3539 | object. In such a case, we don't actually need to build | |
3540 | a procedure linkage table, and we can just do a PCREL | |
3541 | reloc instead. */ | |
3542 | h->plt.offset = (bfd_vma) - 1; | |
3543 | h->needs_plt = 0; | |
3544 | } | |
3545 | ||
3546 | return TRUE; | |
3547 | } | |
3548 | else | |
3549 | h->plt.offset = (bfd_vma) - 1; | |
3550 | ||
3551 | /* If this is a weak symbol, and there is a real definition, the | |
3552 | processor independent code will have arranged for us to see the | |
3553 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 3554 | if (h->is_weakalias) |
35c08157 | 3555 | { |
60d67dc8 AM |
3556 | struct elf_link_hash_entry *def = weakdef (h); |
3557 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
3558 | h->root.u.def.section = def->root.u.def.section; | |
3559 | h->root.u.def.value = def->root.u.def.value; | |
35c08157 KLC |
3560 | return TRUE; |
3561 | } | |
3562 | ||
3563 | /* This is a reference to a symbol defined by a dynamic object which | |
3564 | is not a function. */ | |
3565 | ||
3566 | /* If we are creating a shared library, we must presume that the | |
3567 | only references to the symbol are via the global offset table. | |
3568 | For such cases we need not do anything here; the relocations will | |
3569 | be handled correctly by relocate_section. */ | |
0e1862bb | 3570 | if (bfd_link_pic (info)) |
35c08157 KLC |
3571 | return TRUE; |
3572 | ||
3573 | /* If there are no references to this symbol that do not use the | |
3574 | GOT, we don't need to generate a copy reloc. */ | |
3575 | if (!h->non_got_ref) | |
3576 | return TRUE; | |
3577 | ||
3578 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
3bf083ed | 3579 | if (0 && info->nocopyreloc) |
35c08157 KLC |
3580 | { |
3581 | h->non_got_ref = 0; | |
3582 | return TRUE; | |
3583 | } | |
3584 | ||
3bf083ed AM |
3585 | /* If we don't find any dynamic relocs in read-only sections, then |
3586 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
3587 | if (0 && !readonly_dynrelocs (h)) | |
35c08157 KLC |
3588 | { |
3589 | h->non_got_ref = 0; | |
3590 | return TRUE; | |
3591 | } | |
3592 | ||
3593 | /* We must allocate the symbol in our .dynbss section, which will | |
3594 | become part of the .bss section of the executable. There will be | |
3595 | an entry for this symbol in the .dynsym section. The dynamic | |
3596 | object will contain position independent code, so all references | |
3597 | from the dynamic object to this symbol will go through the global | |
3598 | offset table. The dynamic linker will use the .dynsym entry to | |
3599 | determine the address it must put in the global offset table, so | |
3600 | both the dynamic object and the regular object will refer to the | |
3601 | same memory location for the variable. */ | |
3602 | ||
3603 | htab = nds32_elf_hash_table (info); | |
3604 | s = htab->sdynbss; | |
3605 | BFD_ASSERT (s != NULL); | |
3606 | ||
3607 | /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker | |
3608 | to copy the initial value out of the dynamic object and into the | |
3609 | runtime process image. We need to remember the offset into the | |
3610 | .rela.bss section we are going to use. */ | |
3611 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3612 | { | |
3613 | asection *srel; | |
3614 | ||
3615 | srel = htab->srelbss; | |
3616 | BFD_ASSERT (srel != NULL); | |
3617 | srel->size += sizeof (Elf32_External_Rela); | |
3618 | h->needs_copy = 1; | |
3619 | } | |
3620 | ||
3621 | /* We need to figure out the alignment required for this symbol. I | |
3622 | have no idea how ELF linkers handle this. */ | |
3623 | power_of_two = bfd_log2 (h->size); | |
3624 | if (power_of_two > 3) | |
3625 | power_of_two = 3; | |
3626 | ||
3627 | /* Apply the required alignment. */ | |
3628 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
3629 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
3630 | { | |
3631 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
3632 | return FALSE; | |
3633 | } | |
3634 | ||
3635 | /* Define the symbol as being at this point in the section. */ | |
3636 | h->root.u.def.section = s; | |
3637 | h->root.u.def.value = s->size; | |
3638 | ||
3639 | /* Increment the section size to make room for the symbol. */ | |
3640 | s->size += h->size; | |
3641 | ||
3642 | return TRUE; | |
3643 | } | |
3644 | ||
3645 | /* Allocate space in .plt, .got and associated reloc sections for | |
3646 | dynamic relocs. */ | |
3647 | ||
3648 | static bfd_boolean | |
3649 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3650 | { | |
3651 | struct bfd_link_info *info; | |
3652 | struct elf_nds32_link_hash_table *htab; | |
3653 | struct elf_nds32_link_hash_entry *eh; | |
3bf083ed | 3654 | struct elf_dyn_relocs *p; |
35c08157 KLC |
3655 | |
3656 | if (h->root.type == bfd_link_hash_indirect) | |
3657 | return TRUE; | |
3658 | ||
3659 | if (h->root.type == bfd_link_hash_warning) | |
3660 | /* When warning symbols are created, they **replace** the "real" | |
3661 | entry in the hash table, thus we never get to see the real | |
3662 | symbol in a hash traversal. So look at it now. */ | |
3663 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3664 | ||
3665 | info = (struct bfd_link_info *) inf; | |
3666 | htab = nds32_elf_hash_table (info); | |
3667 | ||
3668 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3669 | ||
3670 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
3671 | { | |
3672 | /* Make sure this symbol is output as a dynamic symbol. | |
3673 | Undefined weak syms won't yet be marked as dynamic. */ | |
3674 | if (h->dynindx == -1 && !h->forced_local) | |
3675 | { | |
3676 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3677 | return FALSE; | |
3678 | } | |
3679 | ||
0e1862bb | 3680 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
35c08157 | 3681 | { |
ce558b89 | 3682 | asection *s = htab->root.splt; |
35c08157 KLC |
3683 | |
3684 | /* If this is the first .plt entry, make room for the special | |
3685 | first entry. */ | |
3686 | if (s->size == 0) | |
3687 | s->size += PLT_ENTRY_SIZE; | |
3688 | ||
3689 | h->plt.offset = s->size; | |
3690 | ||
3691 | /* If this symbol is not defined in a regular file, and we are | |
3692 | not generating a shared library, then set the symbol to this | |
3693 | location in the .plt. This is required to make function | |
3694 | pointers compare as equal between the normal executable and | |
3695 | the shared library. */ | |
0e1862bb | 3696 | if (!bfd_link_pic (info) && !h->def_regular) |
35c08157 KLC |
3697 | { |
3698 | h->root.u.def.section = s; | |
3699 | h->root.u.def.value = h->plt.offset; | |
3700 | } | |
3701 | ||
3702 | /* Make room for this entry. */ | |
3703 | s->size += PLT_ENTRY_SIZE; | |
3704 | ||
3705 | /* We also need to make an entry in the .got.plt section, which | |
3706 | will be placed in the .got section by the linker script. */ | |
ce558b89 | 3707 | htab->root.sgotplt->size += 4; |
35c08157 KLC |
3708 | |
3709 | /* We also need to make an entry in the .rel.plt section. */ | |
ce558b89 | 3710 | htab->root.srelplt->size += sizeof (Elf32_External_Rela); |
35c08157 KLC |
3711 | } |
3712 | else | |
3713 | { | |
3714 | h->plt.offset = (bfd_vma) - 1; | |
3715 | h->needs_plt = 0; | |
3716 | } | |
3717 | } | |
3718 | else | |
3719 | { | |
3720 | h->plt.offset = (bfd_vma) - 1; | |
3721 | h->needs_plt = 0; | |
3722 | } | |
3723 | ||
3724 | if (h->got.refcount > 0) | |
3725 | { | |
3726 | asection *s; | |
3727 | bfd_boolean dyn; | |
1c8f6a4d | 3728 | int tls_type = elf32_nds32_hash_entry (h)->tls_type; |
35c08157 KLC |
3729 | |
3730 | /* Make sure this symbol is output as a dynamic symbol. | |
3731 | Undefined weak syms won't yet be marked as dynamic. */ | |
3732 | if (h->dynindx == -1 && !h->forced_local) | |
3733 | { | |
3734 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3735 | return FALSE; | |
3736 | } | |
3737 | ||
ce558b89 | 3738 | s = htab->root.sgot; |
35c08157 | 3739 | h->got.offset = s->size; |
1c8f6a4d KLC |
3740 | |
3741 | if (tls_type == GOT_UNKNOWN) | |
3742 | abort (); | |
3743 | else if (tls_type == GOT_NORMAL | |
3744 | || tls_type == GOT_TLS_IE) | |
3745 | /* Need a GOT slot. */ | |
3746 | s->size += 4; | |
3747 | ||
35c08157 | 3748 | dyn = htab->root.dynamic_sections_created; |
0e1862bb | 3749 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) |
ce558b89 | 3750 | htab->root.srelgot->size += sizeof (Elf32_External_Rela); |
35c08157 KLC |
3751 | } |
3752 | else | |
3753 | h->got.offset = (bfd_vma) - 1; | |
3754 | ||
3755 | if (eh->dyn_relocs == NULL) | |
3756 | return TRUE; | |
3757 | ||
3758 | /* In the shared -Bsymbolic case, discard space allocated for | |
3759 | dynamic pc-relative relocs against symbols which turn out to be | |
3760 | defined in regular objects. For the normal shared case, discard | |
3761 | space for pc-relative relocs that have become local due to symbol | |
3762 | visibility changes. */ | |
3763 | ||
0e1862bb | 3764 | if (bfd_link_pic (info)) |
35c08157 KLC |
3765 | { |
3766 | if (h->def_regular && (h->forced_local || info->symbolic)) | |
3767 | { | |
3bf083ed | 3768 | struct elf_dyn_relocs **pp; |
35c08157 KLC |
3769 | |
3770 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
3771 | { | |
3772 | p->count -= p->pc_count; | |
3773 | p->pc_count = 0; | |
3774 | if (p->count == 0) | |
3775 | *pp = p->next; | |
3776 | else | |
3777 | pp = &p->next; | |
3778 | } | |
3779 | } | |
3780 | } | |
3781 | else | |
3782 | { | |
3783 | /* For the non-shared case, discard space for relocs against | |
3784 | symbols which turn out to need copy relocs or are not dynamic. */ | |
3785 | ||
3786 | if (!h->non_got_ref | |
3787 | && ((h->def_dynamic | |
3788 | && !h->def_regular) | |
3789 | || (htab->root.dynamic_sections_created | |
3790 | && (h->root.type == bfd_link_hash_undefweak | |
3791 | || h->root.type == bfd_link_hash_undefined)))) | |
3792 | { | |
3793 | /* Make sure this symbol is output as a dynamic symbol. | |
3794 | Undefined weak syms won't yet be marked as dynamic. */ | |
3795 | if (h->dynindx == -1 && !h->forced_local) | |
3796 | { | |
3797 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3798 | return FALSE; | |
3799 | } | |
3800 | ||
3801 | /* If that succeeded, we know we'll be keeping all the | |
3802 | relocs. */ | |
3803 | if (h->dynindx != -1) | |
3804 | goto keep; | |
3805 | } | |
3806 | ||
3807 | eh->dyn_relocs = NULL; | |
3808 | ||
3809 | keep:; | |
3810 | } | |
3811 | ||
3812 | /* Finally, allocate space. */ | |
3813 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3814 | { | |
3815 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3816 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
3817 | } | |
3818 | ||
3819 | return TRUE; | |
3820 | } | |
3821 | ||
63c1f59d AM |
3822 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to |
3823 | read-only sections. */ | |
35c08157 KLC |
3824 | |
3825 | static bfd_boolean | |
63c1f59d | 3826 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) |
35c08157 | 3827 | { |
63c1f59d | 3828 | asection *sec; |
35c08157 | 3829 | |
63c1f59d AM |
3830 | if (h->root.type == bfd_link_hash_indirect) |
3831 | return TRUE; | |
35c08157 | 3832 | |
63c1f59d AM |
3833 | sec = readonly_dynrelocs (h); |
3834 | if (sec != NULL) | |
35c08157 | 3835 | { |
63c1f59d | 3836 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; |
35c08157 | 3837 | |
63c1f59d AM |
3838 | info->flags |= DF_TEXTREL; |
3839 | info->callbacks->minfo | |
c1c8c1ef | 3840 | (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"), |
63c1f59d | 3841 | sec->owner, h->root.root.string, sec); |
35c08157 | 3842 | |
63c1f59d AM |
3843 | /* Not an error, just cut short the traversal. */ |
3844 | return FALSE; | |
35c08157 KLC |
3845 | } |
3846 | return TRUE; | |
3847 | } | |
3848 | ||
3849 | /* Set the sizes of the dynamic sections. */ | |
3850 | ||
3851 | static bfd_boolean | |
3852 | nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3853 | struct bfd_link_info *info) | |
3854 | { | |
3855 | struct elf_nds32_link_hash_table *htab; | |
3856 | bfd *dynobj; | |
3857 | asection *s; | |
3858 | bfd_boolean relocs; | |
3859 | bfd *ibfd; | |
3860 | ||
3861 | htab = nds32_elf_hash_table (info); | |
3862 | dynobj = htab->root.dynobj; | |
3863 | BFD_ASSERT (dynobj != NULL); | |
3864 | ||
3865 | if (htab->root.dynamic_sections_created) | |
3866 | { | |
3867 | /* Set the contents of the .interp section to the interpreter. */ | |
f5233a16 | 3868 | if (bfd_link_executable (info) && !info->nointerp) |
35c08157 KLC |
3869 | { |
3870 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3871 | BFD_ASSERT (s != NULL); | |
3872 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3873 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3874 | } | |
3875 | } | |
3876 | ||
3877 | /* Set up .got offsets for local syms, and space for local dynamic | |
3878 | relocs. */ | |
c72f2fb2 | 3879 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
35c08157 KLC |
3880 | { |
3881 | bfd_signed_vma *local_got; | |
3882 | bfd_signed_vma *end_local_got; | |
3883 | bfd_size_type locsymcount; | |
3884 | Elf_Internal_Shdr *symtab_hdr; | |
3885 | asection *srel; | |
3886 | ||
3887 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
3888 | continue; | |
3889 | ||
3890 | for (s = ibfd->sections; s != NULL; s = s->next) | |
3891 | { | |
3bf083ed | 3892 | struct elf_dyn_relocs *p; |
35c08157 | 3893 | |
3bf083ed | 3894 | for (p = ((struct elf_dyn_relocs *) |
35c08157 KLC |
3895 | elf_section_data (s)->local_dynrel); |
3896 | p != NULL; p = p->next) | |
3897 | { | |
3898 | if (!bfd_is_abs_section (p->sec) | |
3899 | && bfd_is_abs_section (p->sec->output_section)) | |
3900 | { | |
3901 | /* Input section has been discarded, either because | |
3902 | it is a copy of a linkonce section or due to | |
3903 | linker script /DISCARD/, so we'll be discarding | |
3904 | the relocs too. */ | |
3905 | } | |
3906 | else if (p->count != 0) | |
3907 | { | |
3908 | srel = elf_section_data (p->sec)->sreloc; | |
3909 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
3910 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
3911 | info->flags |= DF_TEXTREL; | |
3912 | } | |
3913 | } | |
3914 | } | |
3915 | ||
3916 | local_got = elf_local_got_refcounts (ibfd); | |
3917 | if (!local_got) | |
3918 | continue; | |
3919 | ||
3920 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
3921 | locsymcount = symtab_hdr->sh_info; | |
3922 | end_local_got = local_got + locsymcount; | |
ce558b89 AM |
3923 | s = htab->root.sgot; |
3924 | srel = htab->root.srelgot; | |
35c08157 KLC |
3925 | for (; local_got < end_local_got; ++local_got) |
3926 | { | |
3927 | if (*local_got > 0) | |
3928 | { | |
3929 | *local_got = s->size; | |
3930 | s->size += 4; | |
0e1862bb | 3931 | if (bfd_link_pic (info)) |
35c08157 KLC |
3932 | srel->size += sizeof (Elf32_External_Rela); |
3933 | } | |
3934 | else | |
3935 | *local_got = (bfd_vma) - 1; | |
3936 | } | |
3937 | } | |
3938 | ||
3939 | /* Allocate global sym .plt and .got entries, and space for global | |
3940 | sym dynamic relocs. */ | |
3941 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info); | |
3942 | ||
3943 | /* We now have determined the sizes of the various dynamic sections. | |
3944 | Allocate memory for them. */ | |
3945 | relocs = FALSE; | |
3946 | for (s = dynobj->sections; s != NULL; s = s->next) | |
3947 | { | |
3948 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
3949 | continue; | |
3950 | ||
ce558b89 | 3951 | if (s == htab->root.splt) |
35c08157 KLC |
3952 | { |
3953 | /* Strip this section if we don't need it; see the | |
3954 | comment below. */ | |
3955 | } | |
ce558b89 | 3956 | else if (s == htab->root.sgot) |
35c08157 KLC |
3957 | { |
3958 | got_size += s->size; | |
3959 | } | |
ce558b89 | 3960 | else if (s == htab->root.sgotplt) |
35c08157 KLC |
3961 | { |
3962 | got_size += s->size; | |
3963 | } | |
3964 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
3965 | { | |
ce558b89 | 3966 | if (s->size != 0 && s != htab->root.srelplt) |
35c08157 KLC |
3967 | relocs = TRUE; |
3968 | ||
3969 | /* We use the reloc_count field as a counter if we need | |
3970 | to copy relocs into the output file. */ | |
3971 | s->reloc_count = 0; | |
3972 | } | |
3973 | else | |
3974 | { | |
3975 | /* It's not one of our sections, so don't allocate space. */ | |
3976 | continue; | |
3977 | } | |
3978 | ||
3979 | if (s->size == 0) | |
3980 | { | |
3981 | /* If we don't need this section, strip it from the | |
3982 | output file. This is mostly to handle .rela.bss and | |
3983 | .rela.plt. We must create both sections in | |
3984 | create_dynamic_sections, because they must be created | |
3985 | before the linker maps input sections to output | |
3986 | sections. The linker does that before | |
3987 | adjust_dynamic_symbol is called, and it is that | |
3988 | function which decides whether anything needs to go | |
3989 | into these sections. */ | |
3990 | s->flags |= SEC_EXCLUDE; | |
3991 | continue; | |
3992 | } | |
3993 | ||
3994 | /* Allocate memory for the section contents. We use bfd_zalloc | |
3995 | here in case unused entries are not reclaimed before the | |
3996 | section's contents are written out. This should not happen, | |
3997 | but this way if it does, we get a R_NDS32_NONE reloc instead | |
3998 | of garbage. */ | |
3999 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
4000 | if (s->contents == NULL) | |
4001 | return FALSE; | |
4002 | } | |
4003 | ||
4004 | ||
4005 | if (htab->root.dynamic_sections_created) | |
4006 | { | |
4007 | /* Add some entries to the .dynamic section. We fill in the | |
4008 | values later, in nds32_elf_finish_dynamic_sections, but we | |
4009 | must add the entries now so that we get the correct size for | |
4010 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4011 | dynamic linker and used by the debugger. */ | |
4012 | #define add_dynamic_entry(TAG, VAL) \ | |
4013 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
4014 | ||
0e1862bb | 4015 | if (!bfd_link_pic (info)) |
35c08157 KLC |
4016 | { |
4017 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
4018 | return FALSE; | |
4019 | } | |
4020 | ||
ce558b89 | 4021 | if (htab->root.splt->size != 0) |
35c08157 KLC |
4022 | { |
4023 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
4024 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4025 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4026 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4027 | return FALSE; | |
4028 | } | |
4029 | ||
4030 | if (relocs) | |
4031 | { | |
4032 | if (!add_dynamic_entry (DT_RELA, 0) | |
4033 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4034 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4035 | return FALSE; | |
4036 | ||
4037 | /* If any dynamic relocs apply to a read-only section, | |
4038 | then we need a DT_TEXTREL entry. */ | |
4039 | if ((info->flags & DF_TEXTREL) == 0) | |
63c1f59d | 4040 | elf_link_hash_traverse (&htab->root, maybe_set_textrel, |
35c08157 KLC |
4041 | (void *) info); |
4042 | ||
4043 | if ((info->flags & DF_TEXTREL) != 0) | |
4044 | { | |
4045 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4046 | return FALSE; | |
4047 | } | |
4048 | } | |
4049 | } | |
4050 | #undef add_dynamic_entry | |
4051 | ||
4052 | return TRUE; | |
4053 | } | |
4054 | ||
4055 | static bfd_reloc_status_type | |
4056 | nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd, | |
4057 | bfd_vma relocation, bfd_byte *location) | |
4058 | { | |
4059 | int size; | |
4060 | bfd_vma x = 0; | |
4061 | bfd_reloc_status_type flag; | |
4062 | unsigned int rightshift = howto->rightshift; | |
4063 | unsigned int bitpos = howto->bitpos; | |
4064 | ||
4065 | /* If the size is negative, negate RELOCATION. This isn't very | |
4066 | general. */ | |
4067 | if (howto->size < 0) | |
4068 | relocation = -relocation; | |
4069 | ||
4070 | /* Get the value we are going to relocate. */ | |
4071 | size = bfd_get_reloc_size (howto); | |
4072 | switch (size) | |
4073 | { | |
4074 | default: | |
35c08157 KLC |
4075 | abort (); |
4076 | break; | |
6346d5ca AM |
4077 | case 0: |
4078 | return bfd_reloc_ok; | |
35c08157 KLC |
4079 | case 2: |
4080 | x = bfd_getb16 (location); | |
4081 | break; | |
4082 | case 4: | |
4083 | x = bfd_getb32 (location); | |
4084 | break; | |
4085 | } | |
4086 | ||
4087 | /* Check for overflow. FIXME: We may drop bits during the addition | |
4088 | which we don't check for. We must either check at every single | |
4089 | operation, which would be tedious, or we must do the computations | |
4090 | in a type larger than bfd_vma, which would be inefficient. */ | |
4091 | flag = bfd_reloc_ok; | |
4092 | if (howto->complain_on_overflow != complain_overflow_dont) | |
4093 | { | |
4094 | bfd_vma addrmask, fieldmask, signmask, ss; | |
4095 | bfd_vma a, b, sum; | |
4096 | ||
4097 | /* Get the values to be added together. For signed and unsigned | |
4098 | relocations, we assume that all values should be truncated to | |
4099 | the size of an address. For bitfields, all the bits matter. | |
4100 | See also bfd_check_overflow. */ | |
4101 | fieldmask = N_ONES (howto->bitsize); | |
4102 | signmask = ~fieldmask; | |
4103 | addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask; | |
4104 | a = (relocation & addrmask) >> rightshift; | |
4105 | b = (x & howto->src_mask & addrmask) >> bitpos; | |
4106 | ||
4107 | switch (howto->complain_on_overflow) | |
4108 | { | |
4109 | case complain_overflow_signed: | |
4110 | /* If any sign bits are set, all sign bits must be set. | |
4111 | That is, A must be a valid negative address after | |
4112 | shifting. */ | |
4113 | signmask = ~(fieldmask >> 1); | |
4114 | /* Fall through. */ | |
4115 | ||
4116 | case complain_overflow_bitfield: | |
4117 | /* Much like the signed check, but for a field one bit | |
4118 | wider. We allow a bitfield to represent numbers in the | |
4119 | range -2**n to 2**n-1, where n is the number of bits in the | |
4120 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc | |
4121 | can't overflow, which is exactly what we want. */ | |
4122 | ss = a & signmask; | |
4123 | if (ss != 0 && ss != ((addrmask >> rightshift) & signmask)) | |
4124 | flag = bfd_reloc_overflow; | |
4125 | ||
4126 | /* We only need this next bit of code if the sign bit of B | |
4127 | is below the sign bit of A. This would only happen if | |
4128 | SRC_MASK had fewer bits than BITSIZE. Note that if | |
4129 | SRC_MASK has more bits than BITSIZE, we can get into | |
4130 | trouble; we would need to verify that B is in range, as | |
4131 | we do for A above. */ | |
4132 | ss = ((~howto->src_mask) >> 1) & howto->src_mask; | |
4133 | ss >>= bitpos; | |
4134 | ||
4135 | /* Set all the bits above the sign bit. */ | |
4136 | b = (b ^ ss) - ss; | |
4137 | ||
4138 | /* Now we can do the addition. */ | |
4139 | sum = a + b; | |
4140 | ||
4141 | /* See if the result has the correct sign. Bits above the | |
4142 | sign bit are junk now; ignore them. If the sum is | |
4143 | positive, make sure we did not have all negative inputs; | |
4144 | if the sum is negative, make sure we did not have all | |
4145 | positive inputs. The test below looks only at the sign | |
4146 | bits, and it really just | |
4147 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) | |
4148 | ||
4149 | We mask with addrmask here to explicitly allow an address | |
4150 | wrap-around. The Linux kernel relies on it, and it is | |
4151 | the only way to write assembler code which can run when | |
4152 | loaded at a location 0x80000000 away from the location at | |
4153 | which it is linked. */ | |
4154 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) | |
4155 | flag = bfd_reloc_overflow; | |
4156 | ||
4157 | break; | |
4158 | ||
4159 | case complain_overflow_unsigned: | |
4160 | /* Checking for an unsigned overflow is relatively easy: | |
4161 | trim the addresses and add, and trim the result as well. | |
4162 | Overflow is normally indicated when the result does not | |
4163 | fit in the field. However, we also need to consider the | |
4164 | case when, e.g., fieldmask is 0x7fffffff or smaller, an | |
4165 | input is 0x80000000, and bfd_vma is only 32 bits; then we | |
4166 | will get sum == 0, but there is an overflow, since the | |
4167 | inputs did not fit in the field. Instead of doing a | |
4168 | separate test, we can check for this by or-ing in the | |
4169 | operands when testing for the sum overflowing its final | |
4170 | field. */ | |
4171 | sum = (a + b) & addrmask; | |
4172 | if ((a | b | sum) & signmask) | |
4173 | flag = bfd_reloc_overflow; | |
4174 | break; | |
4175 | ||
4176 | default: | |
4177 | abort (); | |
4178 | } | |
4179 | } | |
4180 | ||
4181 | /* Put RELOCATION in the right bits. */ | |
4182 | relocation >>= (bfd_vma) rightshift; | |
4183 | relocation <<= (bfd_vma) bitpos; | |
4184 | ||
4185 | /* Add RELOCATION to the right bits of X. */ | |
4186 | /* FIXME : 090616 | |
4187 | Because the relaxation may generate duplicate relocation at one address, | |
4188 | an addition to immediate in the instruction may cause the relocation added | |
4189 | several times. | |
4190 | This bug should be fixed in assembler, but a check is also needed here. */ | |
4191 | if (howto->partial_inplace) | |
4192 | x = ((x & ~howto->dst_mask) | |
4193 | | (((x & howto->src_mask) + relocation) & howto->dst_mask)); | |
4194 | else | |
4195 | x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask)); | |
4196 | ||
4197 | ||
4198 | /* Put the relocated value back in the object file. */ | |
4199 | switch (size) | |
4200 | { | |
4201 | default: | |
4202 | case 0: | |
4203 | case 1: | |
4204 | case 8: | |
4205 | abort (); | |
4206 | break; | |
4207 | case 2: | |
4208 | bfd_putb16 (x, location); | |
4209 | break; | |
4210 | case 4: | |
4211 | bfd_putb32 (x, location); | |
4212 | break; | |
4213 | } | |
4214 | ||
4215 | return flag; | |
4216 | } | |
4217 | ||
4218 | static bfd_reloc_status_type | |
4219 | nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, | |
4220 | asection *input_section, bfd_byte *contents, | |
4221 | bfd_vma address, bfd_vma value, bfd_vma addend) | |
4222 | { | |
4223 | bfd_vma relocation; | |
4224 | ||
4225 | /* Sanity check the address. */ | |
4226 | if (address > bfd_get_section_limit (input_bfd, input_section)) | |
4227 | return bfd_reloc_outofrange; | |
4228 | ||
4229 | /* This function assumes that we are dealing with a basic relocation | |
4230 | against a symbol. We want to compute the value of the symbol to | |
4231 | relocate to. This is just VALUE, the value of the symbol, plus | |
4232 | ADDEND, any addend associated with the reloc. */ | |
4233 | relocation = value + addend; | |
4234 | ||
4235 | /* If the relocation is PC relative, we want to set RELOCATION to | |
4236 | the distance between the symbol (currently in RELOCATION) and the | |
4237 | location we are relocating. Some targets (e.g., i386-aout) | |
4238 | arrange for the contents of the section to be the negative of the | |
4239 | offset of the location within the section; for such targets | |
4240 | pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF) | |
4241 | simply leave the contents of the section as zero; for such | |
4242 | targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not | |
4243 | need to subtract out the offset of the location within the | |
4244 | section (which is just ADDRESS). */ | |
4245 | if (howto->pc_relative) | |
4246 | { | |
4247 | relocation -= (input_section->output_section->vma | |
4248 | + input_section->output_offset); | |
4249 | if (howto->pcrel_offset) | |
4250 | relocation -= address; | |
4251 | } | |
4252 | ||
4253 | return nds32_relocate_contents (howto, input_bfd, relocation, | |
4254 | contents + address); | |
4255 | } | |
4256 | ||
4257 | static bfd_boolean | |
4258 | nds32_elf_output_symbol_hook (struct bfd_link_info *info, | |
4259 | const char *name, | |
4260 | Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED, | |
4261 | asection *input_sec, | |
4262 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
4263 | { | |
4264 | const char *source; | |
4265 | FILE *sym_ld_script = NULL; | |
4266 | struct elf_nds32_link_hash_table *table; | |
4267 | ||
4268 | table = nds32_elf_hash_table (info); | |
4269 | sym_ld_script = table->sym_ld_script; | |
4270 | if (!sym_ld_script) | |
4271 | return TRUE; | |
4272 | ||
4273 | if (!h || !name || *name == '\0') | |
4274 | return TRUE; | |
4275 | ||
4276 | if (input_sec->flags & SEC_EXCLUDE) | |
4277 | return TRUE; | |
4278 | ||
4279 | if (!check_start_export_sym) | |
4280 | { | |
4281 | fprintf (sym_ld_script, "SECTIONS\n{\n"); | |
4282 | check_start_export_sym = 1; | |
4283 | } | |
4284 | ||
4285 | if (h->root.type == bfd_link_hash_defined | |
4286 | || h->root.type == bfd_link_hash_defweak) | |
4287 | { | |
4288 | if (!h->root.u.def.section->output_section) | |
4289 | return TRUE; | |
4290 | ||
4291 | if (bfd_is_const_section (input_sec)) | |
4292 | source = input_sec->name; | |
4293 | else | |
4294 | source = input_sec->owner->filename; | |
4295 | ||
4296 | fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n", | |
4297 | h->root.root.string, | |
4298 | (long) (h->root.u.def.value | |
4299 | + h->root.u.def.section->output_section->vma | |
4300 | + h->root.u.def.section->output_offset), source); | |
4301 | } | |
4302 | ||
4303 | return TRUE; | |
4304 | } | |
4305 | ||
4306 | /* Relocate an NDS32/D ELF section. | |
4307 | There is some attempt to make this function usable for many architectures, | |
4308 | both for RELA and REL type relocs, if only to serve as a learning tool. | |
4309 | ||
4310 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
4311 | to handle the relocations for a section. | |
4312 | ||
4313 | The relocs are always passed as Rela structures; if the section | |
4314 | actually uses Rel structures, the r_addend field will always be | |
4315 | zero. | |
4316 | ||
4317 | This function is responsible for adjust the section contents as | |
4318 | necessary, and (if using Rela relocs and generating a | |
4319 | relocatable output file) adjusting the reloc addend as | |
4320 | necessary. | |
4321 | ||
4322 | This function does not have to worry about setting the reloc | |
4323 | address or the reloc symbol index. | |
4324 | ||
4325 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4326 | ||
4327 | LOCAL_SECTIONS is an array giving the section in the input file | |
4328 | corresponding to the st_shndx field of each local symbol. | |
4329 | ||
4330 | The global hash table entry for the global symbols can be found | |
4331 | via elf_sym_hashes (input_bfd). | |
4332 | ||
4333 | When generating relocatable output, this function must handle | |
4334 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
4335 | going to be the section symbol corresponding to the output | |
4336 | section, which means that the addend must be adjusted | |
4337 | accordingly. */ | |
4338 | ||
1c8f6a4d KLC |
4339 | static bfd_vma |
4340 | dtpoff_base (struct bfd_link_info *info) | |
4341 | { | |
4342 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4343 | if (elf_hash_table (info)->tls_sec == NULL) | |
4344 | return 0; | |
4345 | return elf_hash_table (info)->tls_sec->vma; | |
4346 | } | |
4347 | ||
35c08157 | 4348 | static bfd_boolean |
07d6d2b8 | 4349 | nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, |
35c08157 | 4350 | struct bfd_link_info * info, |
07d6d2b8 AM |
4351 | bfd * input_bfd, |
4352 | asection * input_section, | |
4353 | bfd_byte * contents, | |
4354 | Elf_Internal_Rela * relocs, | |
4355 | Elf_Internal_Sym * local_syms, | |
4356 | asection ** local_sections) | |
35c08157 KLC |
4357 | { |
4358 | Elf_Internal_Shdr *symtab_hdr; | |
4359 | struct elf_link_hash_entry **sym_hashes; | |
4360 | Elf_Internal_Rela *rel, *relend; | |
4361 | bfd_boolean ret = TRUE; /* Assume success. */ | |
4362 | int align = 0; | |
4363 | bfd_reloc_status_type r; | |
4364 | const char *errmsg = NULL; | |
4365 | bfd_vma gp; | |
4366 | struct elf_nds32_link_hash_table *htab; | |
4367 | bfd *dynobj; | |
4368 | bfd_vma *local_got_offsets; | |
4369 | asection *sgot, *splt, *sreloc; | |
4370 | bfd_vma high_address; | |
4371 | struct elf_nds32_link_hash_table *table; | |
4372 | int eliminate_gc_relocs; | |
4373 | bfd_vma fpbase_addr; | |
4374 | ||
4375 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4376 | sym_hashes = elf_sym_hashes (input_bfd); | |
4377 | htab = nds32_elf_hash_table (info); | |
4378 | high_address = bfd_get_section_limit (input_bfd, input_section); | |
4379 | ||
4380 | dynobj = htab->root.dynobj; | |
4381 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
4382 | ||
ce558b89 AM |
4383 | sgot = htab->root.sgot; |
4384 | splt = htab->root.splt; | |
35c08157 KLC |
4385 | sreloc = NULL; |
4386 | ||
4387 | rel = relocs; | |
4388 | relend = relocs + input_section->reloc_count; | |
4389 | ||
4390 | table = nds32_elf_hash_table (info); | |
4391 | eliminate_gc_relocs = table->eliminate_gc_relocs; | |
4392 | /* By this time, we can adjust the value of _SDA_BASE_. */ | |
0e1862bb | 4393 | if ((!bfd_link_relocatable (info))) |
35c08157 KLC |
4394 | { |
4395 | is_SDA_BASE_set = 1; | |
4396 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE); | |
4397 | if (r != bfd_reloc_ok) | |
4398 | return FALSE; | |
4399 | } | |
4400 | ||
4401 | /* Use gp as fp to prevent truncated fit. Because in relaxation time | |
4402 | the fp value is set as gp, and it has be reverted for instruction | |
4403 | setting fp. */ | |
4404 | fpbase_addr = elf_gp (output_bfd); | |
4405 | ||
4406 | for (rel = relocs; rel < relend; rel++) | |
4407 | { | |
4408 | enum elf_nds32_reloc_type r_type; | |
4409 | reloc_howto_type *howto = NULL; | |
4410 | unsigned long r_symndx; | |
4411 | struct elf_link_hash_entry *h = NULL; | |
4412 | Elf_Internal_Sym *sym = NULL; | |
4413 | asection *sec; | |
4414 | bfd_vma relocation; | |
4415 | ||
4416 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to | |
4417 | ensure it's zero (we use REL relocs, not RELA). Therefore this | |
4418 | should be assigning zero to `addend', but for clarity we use | |
4419 | `r_addend'. */ | |
4420 | ||
4421 | bfd_vma addend = rel->r_addend; | |
4422 | bfd_vma offset = rel->r_offset; | |
4423 | ||
4424 | r_type = ELF32_R_TYPE (rel->r_info); | |
4425 | if (r_type >= R_NDS32_max) | |
4426 | { | |
695344c0 | 4427 | /* xgettext:c-format */ |
0aa13fee | 4428 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
4eca0228 | 4429 | input_bfd, r_type); |
35c08157 KLC |
4430 | bfd_set_error (bfd_error_bad_value); |
4431 | ret = FALSE; | |
4432 | continue; | |
4433 | } | |
4434 | ||
4435 | if (r_type == R_NDS32_GNU_VTENTRY | |
4436 | || r_type == R_NDS32_GNU_VTINHERIT | |
4437 | || r_type == R_NDS32_NONE | |
4438 | || r_type == R_NDS32_RELA_GNU_VTENTRY | |
4439 | || r_type == R_NDS32_RELA_GNU_VTINHERIT | |
4440 | || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA) | |
4441 | || r_type == R_NDS32_DATA | |
1c8f6a4d | 4442 | || r_type == R_NDS32_TRAN |
0c4bd9d9 | 4443 | || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7)) |
35c08157 KLC |
4444 | continue; |
4445 | ||
0c4bd9d9 KLC |
4446 | /* If we enter the fp-as-gp region. Resolve the address |
4447 | of best fp-base. */ | |
35c08157 KLC |
4448 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
4449 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4450 | { | |
4451 | int dist; | |
4452 | ||
4453 | /* Distance to relocation of best fp-base is encoded in R_SYM. */ | |
4454 | dist = rel->r_addend >> 16; | |
4455 | fpbase_addr = calculate_memory_address (input_bfd, rel + dist, | |
4456 | local_syms, symtab_hdr); | |
4457 | } | |
4458 | else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END | |
4459 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4460 | { | |
4461 | fpbase_addr = elf_gp (output_bfd); | |
4462 | } | |
4463 | ||
4464 | if (((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4465 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
0e1862bb | 4466 | || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info)) |
35c08157 KLC |
4467 | continue; |
4468 | ||
4469 | howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); | |
4470 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4471 | ||
4472 | /* This is a final link. */ | |
4473 | sym = NULL; | |
4474 | sec = NULL; | |
4475 | h = NULL; | |
4476 | ||
4477 | if (r_symndx < symtab_hdr->sh_info) | |
4478 | { | |
4479 | /* Local symbol. */ | |
4480 | sym = local_syms + r_symndx; | |
4481 | sec = local_sections[r_symndx]; | |
4482 | ||
4483 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
4484 | addend = rel->r_addend; | |
4485 | } | |
4486 | else | |
4487 | { | |
4488 | /* External symbol. */ | |
4489 | bfd_boolean warned, ignored, unresolved_reloc; | |
4490 | int symndx = r_symndx - symtab_hdr->sh_info; | |
4491 | ||
4492 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4493 | r_symndx, symtab_hdr, sym_hashes, h, sec, | |
4494 | relocation, unresolved_reloc, warned, | |
4495 | ignored); | |
4496 | ||
4497 | /* la $fp, _FP_BASE_ is per-function (region). | |
4498 | Handle it specially. */ | |
4499 | switch ((int) r_type) | |
4500 | { | |
4501 | case R_NDS32_SDA19S0_RELA: | |
4502 | case R_NDS32_SDA15S0_RELA: | |
4503 | case R_NDS32_20_RELA: | |
4504 | if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string, | |
4505 | FP_BASE_NAME) == 0) | |
4506 | { | |
4507 | relocation = fpbase_addr; | |
4508 | break; | |
4509 | } | |
4510 | } | |
4511 | ||
4512 | } | |
4513 | ||
0e1862bb | 4514 | if (bfd_link_relocatable (info)) |
35c08157 KLC |
4515 | { |
4516 | /* This is a relocatable link. We don't have to change | |
4517 | anything, unless the reloc is against a section symbol, | |
4518 | in which case we have to adjust according to where the | |
4519 | section symbol winds up in the output section. */ | |
4520 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4521 | rel->r_addend += sec->output_offset + sym->st_value; | |
4522 | ||
4523 | continue; | |
4524 | } | |
4525 | ||
4526 | /* Sanity check the address. */ | |
4527 | if (offset > high_address) | |
4528 | { | |
4529 | r = bfd_reloc_outofrange; | |
4530 | goto check_reloc; | |
4531 | } | |
4532 | ||
4533 | if ((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4534 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
4535 | || r_type >= R_NDS32_RELAX_ENTRY) | |
4536 | continue; | |
4537 | ||
4538 | switch ((int) r_type) | |
4539 | { | |
4540 | case R_NDS32_GOTOFF: | |
4541 | /* Relocation is relative to the start of the global offset | |
4542 | table (for ld24 rx, #uimm24), e.g. access at label+addend | |
4543 | ||
4544 | ld24 rx. #label@GOTOFF + addend | |
4545 | sub rx, r12. */ | |
4546 | case R_NDS32_GOTOFF_HI20: | |
4547 | case R_NDS32_GOTOFF_LO12: | |
4548 | case R_NDS32_GOTOFF_LO15: | |
4549 | case R_NDS32_GOTOFF_LO19: | |
4550 | BFD_ASSERT (sgot != NULL); | |
4551 | ||
4552 | relocation -= elf_gp (output_bfd); | |
4553 | break; | |
4554 | ||
4555 | case R_NDS32_9_PLTREL: | |
4556 | case R_NDS32_25_PLTREL: | |
4557 | /* Relocation is to the entry for this symbol in the | |
4558 | procedure linkage table. */ | |
4559 | ||
4560 | /* The native assembler will generate a 25_PLTREL reloc | |
4561 | for a local symbol if you assemble a call from one | |
4562 | section to another when using -K pic. */ | |
4563 | if (h == NULL) | |
4564 | break; | |
4565 | ||
4566 | if (h->forced_local) | |
4567 | break; | |
4568 | ||
4569 | /* We didn't make a PLT entry for this symbol. This | |
4570 | happens when statically linking PIC code, or when | |
4571 | using -Bsymbolic. */ | |
4572 | if (h->plt.offset == (bfd_vma) - 1) | |
4573 | break; | |
4574 | ||
4575 | relocation = (splt->output_section->vma | |
4576 | + splt->output_offset + h->plt.offset); | |
4577 | break; | |
4578 | ||
4579 | case R_NDS32_PLT_GOTREL_HI20: | |
4580 | case R_NDS32_PLT_GOTREL_LO12: | |
4581 | case R_NDS32_PLT_GOTREL_LO15: | |
4582 | case R_NDS32_PLT_GOTREL_LO19: | |
4583 | case R_NDS32_PLT_GOTREL_LO20: | |
4584 | if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1) | |
4585 | { | |
4586 | /* We didn't make a PLT entry for this symbol. This | |
4587 | happens when statically linking PIC code, or when | |
4588 | using -Bsymbolic. */ | |
4589 | relocation -= elf_gp (output_bfd); | |
4590 | break; | |
4591 | } | |
4592 | ||
4593 | relocation = (splt->output_section->vma | |
4594 | + splt->output_offset + h->plt.offset); | |
4595 | ||
4596 | relocation -= elf_gp (output_bfd); | |
4597 | break; | |
4598 | ||
4599 | case R_NDS32_PLTREL_HI20: | |
4600 | case R_NDS32_PLTREL_LO12: | |
4601 | ||
4602 | /* Relocation is to the entry for this symbol in the | |
4603 | procedure linkage table. */ | |
4604 | ||
4605 | /* The native assembler will generate a 25_PLTREL reloc | |
4606 | for a local symbol if you assemble a call from one | |
4607 | section to another when using -K pic. */ | |
4608 | if (h == NULL) | |
4609 | break; | |
4610 | ||
4611 | if (h->forced_local) | |
4612 | break; | |
4613 | ||
4614 | if (h->plt.offset == (bfd_vma) - 1) | |
4615 | /* We didn't make a PLT entry for this symbol. This | |
4616 | happens when statically linking PIC code, or when | |
4617 | using -Bsymbolic. */ | |
4618 | break; | |
4619 | ||
4620 | if (splt == NULL) | |
4621 | break; | |
4622 | ||
4623 | relocation = (splt->output_section->vma | |
4624 | + splt->output_offset | |
4625 | + h->plt.offset + 4) | |
4626 | - (input_section->output_section->vma | |
4627 | + input_section->output_offset | |
4628 | + rel->r_offset); | |
4629 | ||
4630 | break; | |
4631 | ||
4632 | case R_NDS32_GOTPC20: | |
4633 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4634 | ld24 rx,#_GLOBAL_OFFSET_TABLE_ */ | |
4635 | relocation = elf_gp (output_bfd); | |
4636 | break; | |
4637 | ||
4638 | case R_NDS32_GOTPC_HI20: | |
4639 | case R_NDS32_GOTPC_LO12: | |
4640 | { | |
4641 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4642 | bl .+4 | |
4643 | seth rx,#high(_GLOBAL_OFFSET_TABLE_) | |
4644 | or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4645 | or | |
4646 | bl .+4 | |
4647 | seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) | |
4648 | add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4649 | */ | |
4650 | relocation = elf_gp (output_bfd); | |
4651 | relocation -= (input_section->output_section->vma | |
4652 | + input_section->output_offset + rel->r_offset); | |
4653 | break; | |
4654 | } | |
4655 | ||
4656 | case R_NDS32_GOT20: | |
4657 | /* Fall through. */ | |
4658 | case R_NDS32_GOT_HI20: | |
4659 | case R_NDS32_GOT_LO12: | |
4660 | case R_NDS32_GOT_LO15: | |
4661 | case R_NDS32_GOT_LO19: | |
4662 | /* Relocation is to the entry for this symbol in the global | |
4663 | offset table. */ | |
4664 | BFD_ASSERT (sgot != NULL); | |
4665 | ||
4666 | if (h != NULL) | |
4667 | { | |
4668 | bfd_boolean dyn; | |
4669 | bfd_vma off; | |
4670 | ||
4671 | off = h->got.offset; | |
4672 | BFD_ASSERT (off != (bfd_vma) - 1); | |
4673 | dyn = htab->root.dynamic_sections_created; | |
0e1862bb L |
4674 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
4675 | bfd_link_pic (info), | |
4676 | h) | |
4677 | || (bfd_link_pic (info) | |
35c08157 KLC |
4678 | && (info->symbolic |
4679 | || h->dynindx == -1 | |
4680 | || h->forced_local) && h->def_regular)) | |
4681 | { | |
4682 | /* This is actually a static link, or it is a | |
4683 | -Bsymbolic link and the symbol is defined | |
4684 | locally, or the symbol was forced to be local | |
4685 | because of a version file. We must initialize | |
4686 | this entry in the global offset table. Since the | |
4687 | offset must always be a multiple of 4, we use the | |
4688 | least significant bit to record whether we have | |
4689 | initialized it already. | |
4690 | ||
4691 | When doing a dynamic link, we create a .rela.got | |
4692 | relocation entry to initialize the value. This | |
4693 | is done in the finish_dynamic_symbol routine. */ | |
4694 | if ((off & 1) != 0) | |
4695 | off &= ~1; | |
4696 | else | |
4697 | { | |
4698 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4699 | h->got.offset |= 1; | |
4700 | } | |
4701 | } | |
4702 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4703 | - elf_gp (output_bfd); | |
4704 | } | |
4705 | else | |
4706 | { | |
4707 | bfd_vma off; | |
4708 | bfd_byte *loc; | |
4709 | ||
4710 | BFD_ASSERT (local_got_offsets != NULL | |
4711 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
4712 | ||
4713 | off = local_got_offsets[r_symndx]; | |
4714 | ||
4715 | /* The offset must always be a multiple of 4. We use | |
4716 | the least significant bit to record whether we have | |
4717 | already processed this entry. */ | |
4718 | if ((off & 1) != 0) | |
4719 | off &= ~1; | |
4720 | else | |
4721 | { | |
4722 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4723 | ||
0e1862bb | 4724 | if (bfd_link_pic (info)) |
35c08157 KLC |
4725 | { |
4726 | asection *srelgot; | |
4727 | Elf_Internal_Rela outrel; | |
4728 | ||
4729 | /* We need to generate a R_NDS32_RELATIVE reloc | |
4730 | for the dynamic linker. */ | |
ce558b89 | 4731 | srelgot = htab->root.srelgot; |
35c08157 KLC |
4732 | BFD_ASSERT (srelgot != NULL); |
4733 | ||
4734 | outrel.r_offset = (elf_gp (output_bfd) | |
4735 | + sgot->output_offset + off); | |
4736 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4737 | outrel.r_addend = relocation; | |
4738 | loc = srelgot->contents; | |
4739 | loc += | |
4740 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
4741 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4742 | ++srelgot->reloc_count; | |
4743 | } | |
4744 | local_got_offsets[r_symndx] |= 1; | |
4745 | } | |
4746 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4747 | - elf_gp (output_bfd); | |
4748 | } | |
4749 | ||
4750 | break; | |
4751 | ||
4752 | case R_NDS32_16_RELA: | |
4753 | case R_NDS32_20_RELA: | |
4754 | case R_NDS32_5_RELA: | |
4755 | case R_NDS32_32_RELA: | |
4756 | case R_NDS32_9_PCREL_RELA: | |
4757 | case R_NDS32_WORD_9_PCREL_RELA: | |
4758 | case R_NDS32_10_UPCREL_RELA: | |
4759 | case R_NDS32_15_PCREL_RELA: | |
4760 | case R_NDS32_17_PCREL_RELA: | |
4761 | case R_NDS32_25_PCREL_RELA: | |
4762 | case R_NDS32_HI20_RELA: | |
4763 | case R_NDS32_LO12S3_RELA: | |
4764 | case R_NDS32_LO12S2_RELA: | |
4765 | case R_NDS32_LO12S2_DP_RELA: | |
4766 | case R_NDS32_LO12S2_SP_RELA: | |
4767 | case R_NDS32_LO12S1_RELA: | |
4768 | case R_NDS32_LO12S0_RELA: | |
4769 | case R_NDS32_LO12S0_ORI_RELA: | |
0e1862bb | 4770 | if (bfd_link_pic (info) && r_symndx != 0 |
35c08157 KLC |
4771 | && (input_section->flags & SEC_ALLOC) != 0 |
4772 | && (eliminate_gc_relocs == 0 | |
4773 | || (sec && (sec->flags & SEC_EXCLUDE) == 0)) | |
4774 | && ((r_type != R_NDS32_9_PCREL_RELA | |
4775 | && r_type != R_NDS32_WORD_9_PCREL_RELA | |
4776 | && r_type != R_NDS32_10_UPCREL_RELA | |
4777 | && r_type != R_NDS32_15_PCREL_RELA | |
4778 | && r_type != R_NDS32_17_PCREL_RELA | |
4779 | && r_type != R_NDS32_25_PCREL_RELA | |
4780 | && !(r_type == R_NDS32_32_RELA | |
4781 | && strcmp (input_section->name, ".eh_frame") == 0)) | |
4782 | || (h != NULL && h->dynindx != -1 | |
4783 | && (!info->symbolic || !h->def_regular)))) | |
4784 | { | |
4785 | Elf_Internal_Rela outrel; | |
4786 | bfd_boolean skip, relocate; | |
4787 | bfd_byte *loc; | |
4788 | ||
4789 | /* When generating a shared object, these relocations | |
4790 | are copied into the output file to be resolved at run | |
4791 | time. */ | |
4792 | ||
4793 | if (sreloc == NULL) | |
4794 | { | |
4795 | const char *name; | |
4796 | ||
4797 | name = bfd_elf_string_from_elf_section | |
4798 | (input_bfd, elf_elfheader (input_bfd)->e_shstrndx, | |
4799 | elf_section_data (input_section)->rela.hdr->sh_name); | |
4800 | if (name == NULL) | |
4801 | return FALSE; | |
4802 | ||
4803 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
4804 | && strcmp (bfd_get_section_name (input_bfd, | |
4805 | input_section), | |
4806 | name + 5) == 0); | |
4807 | ||
4808 | sreloc = bfd_get_section_by_name (dynobj, name); | |
4809 | BFD_ASSERT (sreloc != NULL); | |
4810 | } | |
4811 | ||
4812 | skip = FALSE; | |
4813 | relocate = FALSE; | |
4814 | ||
4815 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4816 | info, | |
4817 | input_section, | |
4818 | rel->r_offset); | |
4819 | if (outrel.r_offset == (bfd_vma) - 1) | |
4820 | skip = TRUE; | |
4821 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4822 | skip = TRUE, relocate = TRUE; | |
4823 | outrel.r_offset += (input_section->output_section->vma | |
4824 | + input_section->output_offset); | |
4825 | ||
4826 | if (skip) | |
4827 | memset (&outrel, 0, sizeof outrel); | |
4828 | else if (r_type == R_NDS32_17_PCREL_RELA | |
4829 | || r_type == R_NDS32_15_PCREL_RELA | |
4830 | || r_type == R_NDS32_25_PCREL_RELA) | |
4831 | { | |
4832 | BFD_ASSERT (h != NULL && h->dynindx != -1); | |
4833 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4834 | outrel.r_addend = rel->r_addend; | |
4835 | } | |
4836 | else | |
4837 | { | |
4838 | /* h->dynindx may be -1 if this symbol was marked to | |
4839 | become local. */ | |
4840 | if (h == NULL | |
4841 | || ((info->symbolic || h->dynindx == -1) | |
4842 | && h->def_regular)) | |
4843 | { | |
4844 | relocate = TRUE; | |
4845 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4846 | outrel.r_addend = relocation + rel->r_addend; | |
4847 | } | |
4848 | else | |
4849 | { | |
4850 | BFD_ASSERT (h->dynindx != -1); | |
4851 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4852 | outrel.r_addend = rel->r_addend; | |
4853 | } | |
4854 | } | |
4855 | ||
4856 | loc = sreloc->contents; | |
4857 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
4858 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4859 | ++sreloc->reloc_count; | |
4860 | ||
4861 | /* If this reloc is against an external symbol, we do | |
4862 | not want to fiddle with the addend. Otherwise, we | |
4863 | need to include the symbol value so that it becomes | |
4864 | an addend for the dynamic reloc. */ | |
4865 | if (!relocate) | |
4866 | continue; | |
4867 | } | |
4868 | break; | |
4869 | ||
4870 | case R_NDS32_25_ABS_RELA: | |
0e1862bb | 4871 | if (bfd_link_pic (info)) |
35c08157 | 4872 | { |
4eca0228 | 4873 | _bfd_error_handler |
38f14ab8 AM |
4874 | (_("%pB: warning: %s unsupported in shared mode"), |
4875 | input_bfd, "R_NDS32_25_ABS_RELA"); | |
35c08157 KLC |
4876 | return FALSE; |
4877 | } | |
4878 | break; | |
4879 | ||
4880 | case R_NDS32_9_PCREL: | |
4881 | r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section, | |
4882 | contents, offset, | |
4883 | sec, relocation, addend); | |
4884 | goto check_reloc; | |
4885 | ||
4886 | case R_NDS32_HI20: | |
4887 | { | |
4888 | Elf_Internal_Rela *lorel; | |
4889 | ||
4890 | /* We allow an arbitrary number of HI20 relocs before the | |
4891 | LO12 reloc. This permits gcc to emit the HI and LO relocs | |
4892 | itself. */ | |
4893 | for (lorel = rel + 1; | |
4894 | (lorel < relend | |
4895 | && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++) | |
4896 | continue; | |
4897 | if (lorel < relend | |
4898 | && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3 | |
4899 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2 | |
4900 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1 | |
4901 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0)) | |
4902 | { | |
4903 | nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel, | |
4904 | contents, relocation + addend); | |
4905 | r = bfd_reloc_ok; | |
4906 | } | |
4907 | else | |
4908 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1c8f6a4d KLC |
4909 | contents, offset, relocation, |
4910 | addend); | |
35c08157 KLC |
4911 | } |
4912 | ||
4913 | goto check_reloc; | |
4914 | ||
4915 | case R_NDS32_GOT17S2_RELA: | |
4916 | case R_NDS32_GOT15S2_RELA: | |
4917 | { | |
4918 | bfd_vma off; | |
4919 | ||
4920 | BFD_ASSERT (sgot != NULL); | |
4921 | ||
4922 | if (h != NULL) | |
4923 | { | |
4924 | bfd_boolean dyn; | |
4925 | ||
4926 | off = h->got.offset; | |
4927 | BFD_ASSERT (off != (bfd_vma) - 1); | |
4928 | ||
4929 | dyn = htab->root.dynamic_sections_created; | |
4930 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL | |
0e1862bb L |
4931 | (dyn, bfd_link_pic (info), h) |
4932 | || (bfd_link_pic (info) | |
4933 | && (info->symbolic | |
4934 | || h->dynindx == -1 | |
4935 | || h->forced_local) | |
4936 | && h->def_regular)) | |
35c08157 KLC |
4937 | { |
4938 | /* This is actually a static link, or it is a | |
4939 | -Bsymbolic link and the symbol is defined | |
4940 | locally, or the symbol was forced to be local | |
4941 | because of a version file. We must initialize | |
4942 | this entry in the global offset table. Since the | |
4943 | offset must always be a multiple of 4, we use the | |
4944 | least significant bit to record whether we have | |
4945 | initialized it already. | |
4946 | ||
4947 | When doing a dynamic link, we create a .rela.got | |
4948 | relocation entry to initialize the value. This | |
4949 | is done in the finish_dynamic_symbol routine. */ | |
4950 | if ((off & 1) != 0) | |
4951 | off &= ~1; | |
4952 | else | |
4953 | { | |
4954 | bfd_put_32 (output_bfd, relocation, | |
4955 | sgot->contents + off); | |
4956 | h->got.offset |= 1; | |
4957 | } | |
4958 | } | |
4959 | } | |
4960 | else | |
4961 | { | |
4962 | bfd_byte *loc; | |
4963 | ||
4964 | BFD_ASSERT (local_got_offsets != NULL | |
4965 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
4966 | ||
4967 | off = local_got_offsets[r_symndx]; | |
4968 | ||
4969 | /* The offset must always be a multiple of 4. We use | |
4970 | the least significant bit to record whether we have | |
4971 | already processed this entry. */ | |
4972 | if ((off & 1) != 0) | |
4973 | off &= ~1; | |
4974 | else | |
4975 | { | |
4976 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4977 | ||
0e1862bb | 4978 | if (bfd_link_pic (info)) |
35c08157 KLC |
4979 | { |
4980 | asection *srelgot; | |
4981 | Elf_Internal_Rela outrel; | |
4982 | ||
4983 | /* We need to generate a R_NDS32_RELATIVE reloc | |
4984 | for the dynamic linker. */ | |
ce558b89 | 4985 | srelgot = htab->root.srelgot; |
35c08157 KLC |
4986 | BFD_ASSERT (srelgot != NULL); |
4987 | ||
4988 | outrel.r_offset = (elf_gp (output_bfd) | |
4989 | + sgot->output_offset + off); | |
4990 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4991 | outrel.r_addend = relocation; | |
4992 | loc = srelgot->contents; | |
4993 | loc += | |
4994 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
4995 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4996 | ++srelgot->reloc_count; | |
4997 | } | |
4998 | local_got_offsets[r_symndx] |= 1; | |
4999 | } | |
5000 | } | |
5001 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
5002 | - elf_gp (output_bfd); | |
5003 | } | |
5004 | if (relocation & align) | |
5005 | { | |
5006 | /* Incorrect alignment. */ | |
4eca0228 | 5007 | _bfd_error_handler |
38f14ab8 | 5008 | (_("%pB: warning: unaligned access to GOT entry"), input_bfd); |
35c08157 KLC |
5009 | ret = FALSE; |
5010 | r = bfd_reloc_dangerous; | |
5011 | goto check_reloc; | |
5012 | } | |
5013 | break; | |
5014 | ||
5015 | case R_NDS32_SDA16S3_RELA: | |
5016 | case R_NDS32_SDA15S3_RELA: | |
5017 | case R_NDS32_SDA15S3: | |
5018 | align = 0x7; | |
5019 | goto handle_sda; | |
5020 | ||
5021 | case R_NDS32_SDA17S2_RELA: | |
5022 | case R_NDS32_SDA15S2_RELA: | |
5023 | case R_NDS32_SDA12S2_SP_RELA: | |
5024 | case R_NDS32_SDA12S2_DP_RELA: | |
5025 | case R_NDS32_SDA15S2: | |
5026 | case R_NDS32_SDA_FP7U2_RELA: | |
5027 | align = 0x3; | |
5028 | goto handle_sda; | |
5029 | ||
5030 | case R_NDS32_SDA18S1_RELA: | |
5031 | case R_NDS32_SDA15S1_RELA: | |
5032 | case R_NDS32_SDA15S1: | |
5033 | align = 0x1; | |
5034 | goto handle_sda; | |
5035 | ||
5036 | case R_NDS32_SDA19S0_RELA: | |
5037 | case R_NDS32_SDA15S0_RELA: | |
5038 | case R_NDS32_SDA15S0: | |
5039 | { | |
5040 | align = 0x0; | |
5041 | handle_sda: | |
5042 | BFD_ASSERT (sec != NULL); | |
5043 | ||
5044 | /* If the symbol is in the abs section, the out_bfd will be null. | |
5045 | This happens when the relocation has a symbol@GOTOFF. */ | |
5046 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE); | |
5047 | if (r != bfd_reloc_ok) | |
5048 | { | |
4eca0228 | 5049 | _bfd_error_handler |
38f14ab8 | 5050 | (_("%pB: warning: relocate SDA_BASE failed"), input_bfd); |
35c08157 KLC |
5051 | ret = FALSE; |
5052 | goto check_reloc; | |
5053 | } | |
5054 | ||
5055 | /* At this point `relocation' contains the object's | |
5056 | address. */ | |
5057 | if (r_type == R_NDS32_SDA_FP7U2_RELA) | |
5058 | { | |
5059 | relocation -= fpbase_addr; | |
5060 | } | |
5061 | else | |
5062 | relocation -= gp; | |
5063 | /* Now it contains the offset from _SDA_BASE_. */ | |
5064 | ||
5065 | /* Make sure alignment is correct. */ | |
5066 | ||
5067 | if (relocation & align) | |
5068 | { | |
5069 | /* Incorrect alignment. */ | |
4eca0228 | 5070 | _bfd_error_handler |
695344c0 | 5071 | /* xgettext:c-format */ |
38f14ab8 AM |
5072 | (_("%pB(%pA): warning: unaligned small data access" |
5073 | " of type %d"), | |
35c08157 KLC |
5074 | input_bfd, input_section, r_type); |
5075 | ret = FALSE; | |
5076 | goto check_reloc; | |
5077 | } | |
5078 | } | |
5079 | ||
5080 | break; | |
5081 | case R_NDS32_17IFC_PCREL_RELA: | |
5082 | case R_NDS32_10IFCU_PCREL_RELA: | |
5083 | /* do nothing */ | |
5084 | break; | |
5085 | ||
1c8f6a4d KLC |
5086 | case R_NDS32_TLS_LE_HI20: |
5087 | case R_NDS32_TLS_LE_LO12: | |
5088 | case R_NDS32_TLS_LE_20: | |
5089 | case R_NDS32_TLS_LE_15S0: | |
5090 | case R_NDS32_TLS_LE_15S1: | |
5091 | case R_NDS32_TLS_LE_15S2: | |
5092 | if (elf_hash_table (info)->tls_sec != NULL) | |
5093 | relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET); | |
5094 | break; | |
5095 | case R_NDS32_TLS_IE_HI20: | |
5096 | case R_NDS32_TLS_IE_LO12S2: | |
5097 | { | |
5098 | /* Relocation is to the entry for this symbol in the global | |
5099 | offset table. */ | |
5100 | unsigned int tls_type; | |
5101 | asection *srelgot; | |
5102 | Elf_Internal_Rela outrel; | |
5103 | bfd_vma off; | |
5104 | bfd_byte *loc; | |
5105 | int indx = 0; | |
5106 | ||
5107 | BFD_ASSERT (sgot != NULL); | |
5108 | if (h != NULL) | |
5109 | { | |
5110 | bfd_boolean dyn; | |
5111 | ||
5112 | off = h->got.offset; | |
5113 | BFD_ASSERT (off != (bfd_vma) - 1); | |
5114 | dyn = htab->root.dynamic_sections_created; | |
5115 | tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type; | |
0e1862bb L |
5116 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
5117 | && (!bfd_link_pic (info) | |
1c8f6a4d KLC |
5118 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
5119 | indx = h->dynindx; | |
5120 | } | |
5121 | else | |
5122 | { | |
5123 | /* Never happen currently. */ | |
5124 | BFD_ASSERT (local_got_offsets != NULL | |
5125 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
5126 | ||
5127 | off = local_got_offsets[r_symndx]; | |
5128 | ||
5129 | tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx]; | |
5130 | } | |
5131 | relocation = sgot->output_section->vma + sgot->output_offset + off; | |
5132 | ||
5133 | if (r_type == R_NDS32_TLS_IE_LO12S2) | |
5134 | break; | |
5135 | ||
5136 | /* The offset must always be a multiple of 4. We use | |
5137 | the least significant bit to record whether we have | |
5138 | already processed this entry. */ | |
5139 | if ((off & 1) != 0) | |
5140 | off &= ~1; | |
5141 | else | |
5142 | { | |
5143 | bfd_boolean need_relocs = FALSE; | |
ce558b89 | 5144 | srelgot = htab->root.srelgot; |
0e1862bb | 5145 | if ((bfd_link_pic (info) || indx != 0) |
1c8f6a4d KLC |
5146 | && (h == NULL |
5147 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5148 | || h->root.type != bfd_link_hash_undefweak)) | |
5149 | { | |
5150 | need_relocs = TRUE; | |
5151 | BFD_ASSERT (srelgot != NULL); | |
5152 | } | |
5153 | if (tls_type & GOT_TLS_IE) | |
5154 | { | |
5155 | if (need_relocs) | |
5156 | { | |
5157 | if (h->dynindx == 0) | |
5158 | outrel.r_addend = relocation - dtpoff_base (info); | |
5159 | else | |
5160 | outrel.r_addend = 0; | |
5161 | outrel.r_offset = (sgot->output_section->vma | |
5162 | + sgot->output_offset | |
5163 | + off); | |
5164 | outrel.r_info = | |
5165 | ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF); | |
5166 | ||
5167 | loc = srelgot->contents; | |
5168 | loc += | |
5169 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
5170 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5171 | ++srelgot->reloc_count; | |
5172 | } | |
5173 | else | |
5174 | bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET, | |
5175 | sgot->contents + off); | |
5176 | } | |
5177 | } | |
5178 | } | |
5179 | break; | |
5180 | ||
35c08157 KLC |
5181 | /* DON'T fall through. */ |
5182 | ||
5183 | default: | |
5184 | /* OLD_NDS32_RELOC. */ | |
5185 | ||
5186 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5187 | contents, offset, relocation, addend); | |
5188 | goto check_reloc; | |
5189 | } | |
5190 | ||
5191 | switch ((int) r_type) | |
5192 | { | |
5193 | case R_NDS32_20_RELA: | |
5194 | case R_NDS32_5_RELA: | |
5195 | case R_NDS32_9_PCREL_RELA: | |
5196 | case R_NDS32_WORD_9_PCREL_RELA: | |
5197 | case R_NDS32_10_UPCREL_RELA: | |
5198 | case R_NDS32_15_PCREL_RELA: | |
5199 | case R_NDS32_17_PCREL_RELA: | |
5200 | case R_NDS32_25_PCREL_RELA: | |
5201 | case R_NDS32_25_ABS_RELA: | |
5202 | case R_NDS32_HI20_RELA: | |
5203 | case R_NDS32_LO12S3_RELA: | |
5204 | case R_NDS32_LO12S2_RELA: | |
5205 | case R_NDS32_LO12S2_DP_RELA: | |
5206 | case R_NDS32_LO12S2_SP_RELA: | |
5207 | case R_NDS32_LO12S1_RELA: | |
5208 | case R_NDS32_LO12S0_RELA: | |
5209 | case R_NDS32_LO12S0_ORI_RELA: | |
5210 | case R_NDS32_SDA16S3_RELA: | |
5211 | case R_NDS32_SDA17S2_RELA: | |
5212 | case R_NDS32_SDA18S1_RELA: | |
5213 | case R_NDS32_SDA19S0_RELA: | |
5214 | case R_NDS32_SDA15S3_RELA: | |
5215 | case R_NDS32_SDA15S2_RELA: | |
5216 | case R_NDS32_SDA12S2_DP_RELA: | |
5217 | case R_NDS32_SDA12S2_SP_RELA: | |
5218 | case R_NDS32_SDA15S1_RELA: | |
5219 | case R_NDS32_SDA15S0_RELA: | |
5220 | case R_NDS32_SDA_FP7U2_RELA: | |
5221 | case R_NDS32_9_PLTREL: | |
5222 | case R_NDS32_25_PLTREL: | |
5223 | case R_NDS32_GOT20: | |
5224 | case R_NDS32_GOT_HI20: | |
5225 | case R_NDS32_GOT_LO12: | |
5226 | case R_NDS32_GOT_LO15: | |
5227 | case R_NDS32_GOT_LO19: | |
5228 | case R_NDS32_GOT15S2_RELA: | |
5229 | case R_NDS32_GOT17S2_RELA: | |
5230 | case R_NDS32_GOTPC20: | |
5231 | case R_NDS32_GOTPC_HI20: | |
5232 | case R_NDS32_GOTPC_LO12: | |
5233 | case R_NDS32_GOTOFF: | |
5234 | case R_NDS32_GOTOFF_HI20: | |
5235 | case R_NDS32_GOTOFF_LO12: | |
5236 | case R_NDS32_GOTOFF_LO15: | |
5237 | case R_NDS32_GOTOFF_LO19: | |
5238 | case R_NDS32_PLTREL_HI20: | |
5239 | case R_NDS32_PLTREL_LO12: | |
5240 | case R_NDS32_PLT_GOTREL_HI20: | |
5241 | case R_NDS32_PLT_GOTREL_LO12: | |
5242 | case R_NDS32_PLT_GOTREL_LO15: | |
5243 | case R_NDS32_PLT_GOTREL_LO19: | |
5244 | case R_NDS32_PLT_GOTREL_LO20: | |
5245 | case R_NDS32_17IFC_PCREL_RELA: | |
5246 | case R_NDS32_10IFCU_PCREL_RELA: | |
1c8f6a4d KLC |
5247 | case R_NDS32_TLS_LE_HI20: |
5248 | case R_NDS32_TLS_LE_LO12: | |
5249 | case R_NDS32_TLS_IE_HI20: | |
5250 | case R_NDS32_TLS_IE_LO12S2: | |
5251 | case R_NDS32_TLS_LE_20: | |
5252 | case R_NDS32_TLS_LE_15S0: | |
5253 | case R_NDS32_TLS_LE_15S1: | |
5254 | case R_NDS32_TLS_LE_15S2: | |
35c08157 | 5255 | /* Instruction related relocs must handle endian properly. */ |
1c8f6a4d | 5256 | /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */ |
35c08157 KLC |
5257 | r = nds32_elf_final_link_relocate (howto, input_bfd, |
5258 | input_section, contents, | |
5259 | rel->r_offset, relocation, | |
5260 | rel->r_addend); | |
5261 | break; | |
5262 | ||
5263 | default: | |
5264 | /* All other relocs can use default handler. */ | |
5265 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5266 | contents, rel->r_offset, | |
5267 | relocation, rel->r_addend); | |
5268 | break; | |
5269 | } | |
5270 | ||
5271 | check_reloc: | |
5272 | ||
5273 | if (r != bfd_reloc_ok) | |
5274 | { | |
5275 | /* FIXME: This should be generic enough to go in a utility. */ | |
5276 | const char *name; | |
5277 | ||
5278 | if (h != NULL) | |
5279 | name = h->root.root.string; | |
5280 | else | |
5281 | { | |
5282 | name = bfd_elf_string_from_elf_section | |
5283 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
5284 | if (name == NULL || *name == '\0') | |
5285 | name = bfd_section_name (input_bfd, sec); | |
5286 | } | |
5287 | ||
5288 | if (errmsg != NULL) | |
5289 | goto common_error; | |
5290 | ||
5291 | switch (r) | |
5292 | { | |
5293 | case bfd_reloc_overflow: | |
1a72702b AM |
5294 | (*info->callbacks->reloc_overflow) |
5295 | (info, (h ? &h->root : NULL), name, howto->name, | |
5296 | (bfd_vma) 0, input_bfd, input_section, offset); | |
35c08157 KLC |
5297 | break; |
5298 | ||
5299 | case bfd_reloc_undefined: | |
1a72702b AM |
5300 | (*info->callbacks->undefined_symbol) |
5301 | (info, name, input_bfd, input_section, offset, TRUE); | |
35c08157 KLC |
5302 | break; |
5303 | ||
5304 | case bfd_reloc_outofrange: | |
5305 | errmsg = _("internal error: out of range error"); | |
5306 | goto common_error; | |
5307 | ||
5308 | case bfd_reloc_notsupported: | |
5309 | errmsg = _("internal error: unsupported relocation error"); | |
5310 | goto common_error; | |
5311 | ||
5312 | case bfd_reloc_dangerous: | |
5313 | errmsg = _("internal error: dangerous error"); | |
5314 | goto common_error; | |
5315 | ||
5316 | default: | |
5317 | errmsg = _("internal error: unknown error"); | |
5318 | /* Fall through. */ | |
5319 | ||
1a72702b AM |
5320 | common_error: |
5321 | (*info->callbacks->warning) (info, errmsg, name, input_bfd, | |
5322 | input_section, offset); | |
35c08157 KLC |
5323 | break; |
5324 | } | |
5325 | } | |
5326 | } | |
5327 | ||
5328 | return ret; | |
5329 | } | |
5330 | ||
5331 | /* Finish up dynamic symbol handling. We set the contents of various | |
5332 | dynamic sections here. */ | |
5333 | ||
5334 | static bfd_boolean | |
5335 | nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, | |
5336 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) | |
5337 | { | |
5338 | struct elf_nds32_link_hash_table *htab; | |
5339 | bfd_byte *loc; | |
5340 | ||
5341 | htab = nds32_elf_hash_table (info); | |
5342 | ||
5343 | if (h->plt.offset != (bfd_vma) - 1) | |
5344 | { | |
5345 | asection *splt; | |
5346 | asection *sgot; | |
5347 | asection *srela; | |
5348 | ||
5349 | bfd_vma plt_index; | |
5350 | bfd_vma got_offset; | |
5351 | bfd_vma local_plt_offset; | |
5352 | Elf_Internal_Rela rela; | |
5353 | ||
5354 | /* This symbol has an entry in the procedure linkage table. Set | |
5355 | it up. */ | |
5356 | ||
5357 | BFD_ASSERT (h->dynindx != -1); | |
5358 | ||
ce558b89 AM |
5359 | splt = htab->root.splt; |
5360 | sgot = htab->root.sgotplt; | |
5361 | srela = htab->root.srelplt; | |
35c08157 KLC |
5362 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
5363 | ||
5364 | /* Get the index in the procedure linkage table which | |
5365 | corresponds to this symbol. This is the index of this symbol | |
5366 | in all the symbols for which we are making plt entries. The | |
5367 | first entry in the procedure linkage table is reserved. */ | |
5368 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
5369 | ||
5370 | /* Get the offset into the .got table of the entry that | |
5371 | corresponds to this function. Each .got entry is 4 bytes. | |
5372 | The first three are reserved. */ | |
5373 | got_offset = (plt_index + 3) * 4; | |
5374 | ||
5375 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 5376 | if (!bfd_link_pic (info)) |
35c08157 KLC |
5377 | { |
5378 | unsigned long insn; | |
5379 | ||
5380 | insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma | |
5381 | + sgot->output_offset + got_offset) >> 12) | |
5382 | & 0xfffff); | |
5383 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5384 | ||
5385 | insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma | |
5386 | + sgot->output_offset + got_offset) & 0x0fff) | |
5387 | >> 2); | |
5388 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5389 | ||
5390 | insn = PLT_ENTRY_WORD2; | |
5391 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5392 | ||
5393 | insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff); | |
5394 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5395 | ||
5396 | insn = PLT_ENTRY_WORD4 | |
5397 | + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff); | |
5398 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5399 | local_plt_offset = 12; | |
5400 | } | |
5401 | else | |
5402 | { | |
5403 | /* sda_base must be set at this time. */ | |
5404 | unsigned long insn; | |
5405 | long offset; | |
5406 | ||
5407 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5408 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5409 | offset = sgot->output_section->vma + sgot->output_offset + got_offset | |
5410 | - elf_gp (output_bfd); | |
5411 | insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff); | |
5412 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5413 | ||
5414 | insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff); | |
5415 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5416 | ||
5417 | insn = PLT_PIC_ENTRY_WORD2; | |
5418 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5419 | ||
5420 | insn = PLT_PIC_ENTRY_WORD3; | |
5421 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5422 | ||
5423 | insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff); | |
5424 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5425 | ||
5426 | insn = PLT_PIC_ENTRY_WORD5 | |
5427 | + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff); | |
5428 | bfd_putb32 (insn, splt->contents + h->plt.offset + 20); | |
5429 | ||
5430 | local_plt_offset = 16; | |
5431 | } | |
5432 | ||
5433 | /* Fill in the entry in the global offset table, | |
5434 | so it will fall through to the next instruction for the first time. */ | |
5435 | bfd_put_32 (output_bfd, | |
5436 | (splt->output_section->vma + splt->output_offset | |
5437 | + h->plt.offset + local_plt_offset), | |
5438 | sgot->contents + got_offset); | |
5439 | ||
5440 | /* Fill in the entry in the .rela.plt section. */ | |
5441 | rela.r_offset = (sgot->output_section->vma | |
5442 | + sgot->output_offset + got_offset); | |
5443 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT); | |
5444 | rela.r_addend = 0; | |
5445 | loc = srela->contents; | |
5446 | loc += plt_index * sizeof (Elf32_External_Rela); | |
5447 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5448 | ||
5449 | if (!h->def_regular) | |
5450 | { | |
5451 | /* Mark the symbol as undefined, rather than as defined in | |
5452 | the .plt section. Leave the value alone. */ | |
5453 | sym->st_shndx = SHN_UNDEF; | |
5454 | if (!h->ref_regular_nonweak) | |
5455 | sym->st_value = 0; | |
5456 | } | |
5457 | } | |
5458 | ||
5459 | if (h->got.offset != (bfd_vma) - 1) | |
5460 | { | |
5461 | asection *sgot; | |
5462 | asection *srela; | |
5463 | Elf_Internal_Rela rela; | |
5464 | ||
5465 | /* This symbol has an entry in the global offset table. | |
5466 | Set it up. */ | |
5467 | ||
ce558b89 AM |
5468 | sgot = htab->root.sgot; |
5469 | srela = htab->root.srelgot; | |
35c08157 KLC |
5470 | BFD_ASSERT (sgot != NULL && srela != NULL); |
5471 | ||
5472 | rela.r_offset = (sgot->output_section->vma | |
5473 | + sgot->output_offset + (h->got.offset & ~1)); | |
5474 | ||
5475 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5476 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5477 | the symbol was forced to be local because of a version file. | |
5478 | The entry in the global offset table will already have been | |
5479 | initialized in the relocate_section function. */ | |
0e1862bb | 5480 | if (bfd_link_pic (info) |
35c08157 KLC |
5481 | && (info->symbolic |
5482 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
5483 | { | |
5484 | rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
5485 | rela.r_addend = (h->root.u.def.value | |
5486 | + h->root.u.def.section->output_section->vma | |
5487 | + h->root.u.def.section->output_offset); | |
5488 | } | |
5489 | else | |
5490 | { | |
5491 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
5492 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
5493 | sgot->contents + h->got.offset); | |
5494 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT); | |
5495 | rela.r_addend = 0; | |
5496 | } | |
5497 | ||
5498 | loc = srela->contents; | |
5499 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); | |
5500 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5501 | ++srela->reloc_count; | |
5502 | } | |
5503 | ||
5504 | if (h->needs_copy) | |
5505 | { | |
5506 | asection *s; | |
5507 | Elf_Internal_Rela rela; | |
5508 | ||
5509 | /* This symbols needs a copy reloc. Set it up. */ | |
5510 | ||
5511 | BFD_ASSERT (h->dynindx != -1 | |
5512 | && (h->root.type == bfd_link_hash_defined | |
5513 | || h->root.type == bfd_link_hash_defweak)); | |
5514 | ||
5515 | s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss"); | |
5516 | BFD_ASSERT (s != NULL); | |
5517 | ||
5518 | rela.r_offset = (h->root.u.def.value | |
5519 | + h->root.u.def.section->output_section->vma | |
5520 | + h->root.u.def.section->output_offset); | |
5521 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY); | |
5522 | rela.r_addend = 0; | |
5523 | loc = s->contents; | |
5524 | loc += s->reloc_count * sizeof (Elf32_External_Rela); | |
5525 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5526 | ++s->reloc_count; | |
5527 | } | |
5528 | ||
5529 | /* Mark some specially defined symbols as absolute. */ | |
5530 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5531 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5532 | sym->st_shndx = SHN_ABS; | |
5533 | ||
5534 | return TRUE; | |
5535 | } | |
5536 | ||
5537 | ||
5538 | /* Finish up the dynamic sections. */ | |
5539 | ||
5540 | static bfd_boolean | |
5541 | nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) | |
5542 | { | |
5543 | struct elf_nds32_link_hash_table *htab; | |
5544 | bfd *dynobj; | |
5545 | asection *sdyn; | |
5546 | asection *sgot; | |
5547 | ||
5548 | htab = nds32_elf_hash_table (info); | |
5549 | dynobj = htab->root.dynobj; | |
5550 | ||
ce558b89 | 5551 | sgot = htab->root.sgotplt; |
35c08157 KLC |
5552 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
5553 | ||
5554 | if (htab->root.dynamic_sections_created) | |
5555 | { | |
5556 | asection *splt; | |
5557 | Elf32_External_Dyn *dyncon, *dynconend; | |
5558 | ||
5559 | BFD_ASSERT (sgot != NULL && sdyn != NULL); | |
5560 | ||
5561 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
5562 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5563 | ||
5564 | for (; dyncon < dynconend; dyncon++) | |
5565 | { | |
5566 | Elf_Internal_Dyn dyn; | |
5567 | asection *s; | |
5568 | ||
5569 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5570 | ||
5571 | switch (dyn.d_tag) | |
5572 | { | |
5573 | default: | |
5574 | break; | |
5575 | ||
5576 | case DT_PLTGOT: | |
ce558b89 | 5577 | s = htab->root.sgotplt; |
35c08157 KLC |
5578 | goto get_vma; |
5579 | case DT_JMPREL: | |
ce558b89 | 5580 | s = htab->root.srelplt; |
35c08157 | 5581 | get_vma: |
4ade44b7 | 5582 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
35c08157 KLC |
5583 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
5584 | break; | |
5585 | ||
5586 | case DT_PLTRELSZ: | |
ce558b89 | 5587 | s = htab->root.srelplt; |
35c08157 KLC |
5588 | dyn.d_un.d_val = s->size; |
5589 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5590 | break; | |
35c08157 KLC |
5591 | } |
5592 | } | |
5593 | ||
5594 | /* Fill in the first entry in the procedure linkage table. */ | |
ce558b89 | 5595 | splt = htab->root.splt; |
35c08157 KLC |
5596 | if (splt && splt->size > 0) |
5597 | { | |
0e1862bb | 5598 | if (bfd_link_pic (info)) |
35c08157 KLC |
5599 | { |
5600 | unsigned long insn; | |
5601 | long offset; | |
5602 | ||
5603 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5604 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5605 | offset = sgot->output_section->vma + sgot->output_offset + 4 | |
5606 | - elf_gp (output_bfd); | |
5607 | insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff); | |
5608 | bfd_putb32 (insn, splt->contents); | |
5609 | ||
5610 | /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */ | |
5611 | /* here has a typo? */ | |
5612 | insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff); | |
5613 | bfd_putb32 (insn, splt->contents + 4); | |
5614 | ||
5615 | insn = PLT0_PIC_ENTRY_WORD2; | |
5616 | bfd_putb32 (insn, splt->contents + 8); | |
5617 | ||
5618 | insn = PLT0_PIC_ENTRY_WORD3; | |
5619 | bfd_putb32 (insn, splt->contents + 12); | |
5620 | ||
5621 | insn = PLT0_PIC_ENTRY_WORD4; | |
5622 | bfd_putb32 (insn, splt->contents + 16); | |
5623 | ||
5624 | insn = PLT0_PIC_ENTRY_WORD5; | |
5625 | bfd_putb32 (insn, splt->contents + 20); | |
5626 | } | |
5627 | else | |
5628 | { | |
5629 | unsigned long insn; | |
5630 | unsigned long addr; | |
5631 | ||
5632 | /* addr = .got + 4 */ | |
5633 | addr = sgot->output_section->vma + sgot->output_offset + 4; | |
5634 | insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff); | |
5635 | bfd_putb32 (insn, splt->contents); | |
5636 | ||
5637 | insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff); | |
5638 | bfd_putb32 (insn, splt->contents + 4); | |
5639 | ||
5640 | insn = PLT0_ENTRY_WORD2; | |
5641 | bfd_putb32 (insn, splt->contents + 8); | |
5642 | ||
5643 | insn = PLT0_ENTRY_WORD3; | |
5644 | bfd_putb32 (insn, splt->contents + 12); | |
5645 | ||
5646 | insn = PLT0_ENTRY_WORD4; | |
5647 | bfd_putb32 (insn, splt->contents + 16); | |
5648 | } | |
5649 | ||
5650 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
5651 | PLT_ENTRY_SIZE; | |
5652 | } | |
5653 | } | |
5654 | ||
5655 | /* Fill in the first three entries in the global offset table. */ | |
5656 | if (sgot && sgot->size > 0) | |
5657 | { | |
5658 | if (sdyn == NULL) | |
5659 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5660 | else | |
5661 | bfd_put_32 (output_bfd, | |
5662 | sdyn->output_section->vma + sdyn->output_offset, | |
5663 | sgot->contents); | |
5664 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5665 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5666 | ||
5667 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
5668 | } | |
5669 | ||
5670 | return TRUE; | |
5671 | } | |
5672 | \f | |
5673 | ||
5674 | /* Set the right machine number. */ | |
5675 | ||
5676 | static bfd_boolean | |
5677 | nds32_elf_object_p (bfd *abfd) | |
5678 | { | |
5679 | static unsigned int cur_arch = 0; | |
5680 | ||
5681 | if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)) | |
5682 | { | |
5683 | /* E_N1_ARCH is a wild card, so it is set only when no others exist. */ | |
5684 | cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH); | |
5685 | } | |
5686 | ||
5687 | switch (cur_arch) | |
5688 | { | |
5689 | default: | |
5690 | case E_N1_ARCH: | |
5691 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1); | |
5692 | break; | |
5693 | case E_N1H_ARCH: | |
5694 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h); | |
5695 | break; | |
5696 | case E_NDS_ARCH_STAR_V2_0: | |
5697 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2); | |
5698 | break; | |
5699 | case E_NDS_ARCH_STAR_V3_0: | |
5700 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3); | |
5701 | break; | |
5702 | case E_NDS_ARCH_STAR_V3_M: | |
5703 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m); | |
5704 | break; | |
5705 | } | |
5706 | ||
5707 | return TRUE; | |
5708 | } | |
5709 | ||
5710 | /* Store the machine number in the flags field. */ | |
5711 | ||
5712 | static void | |
5713 | nds32_elf_final_write_processing (bfd *abfd, | |
5714 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
5715 | { | |
5716 | unsigned long val; | |
5717 | static unsigned int cur_mach = 0; | |
5718 | ||
5719 | if (bfd_mach_n1 != bfd_get_mach (abfd)) | |
5720 | { | |
5721 | cur_mach = bfd_get_mach (abfd); | |
5722 | } | |
5723 | ||
5724 | switch (cur_mach) | |
5725 | { | |
5726 | case bfd_mach_n1: | |
5727 | /* Only happen when object is empty, since the case is abandon. */ | |
5728 | val = E_N1_ARCH; | |
5729 | val |= E_NDS_ABI_AABI; | |
5730 | val |= E_NDS32_ELF_VER_1_4; | |
5731 | break; | |
5732 | case bfd_mach_n1h: | |
5733 | val = E_N1H_ARCH; | |
5734 | break; | |
5735 | case bfd_mach_n1h_v2: | |
5736 | val = E_NDS_ARCH_STAR_V2_0; | |
5737 | break; | |
5738 | case bfd_mach_n1h_v3: | |
5739 | val = E_NDS_ARCH_STAR_V3_0; | |
5740 | break; | |
5741 | case bfd_mach_n1h_v3m: | |
5742 | val = E_NDS_ARCH_STAR_V3_M; | |
5743 | break; | |
5744 | default: | |
5745 | val = 0; | |
5746 | break; | |
5747 | } | |
5748 | ||
5749 | elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH; | |
5750 | elf_elfheader (abfd)->e_flags |= val; | |
5751 | } | |
5752 | ||
5753 | /* Function to keep NDS32 specific file flags. */ | |
5754 | ||
5755 | static bfd_boolean | |
5756 | nds32_elf_set_private_flags (bfd *abfd, flagword flags) | |
5757 | { | |
5758 | BFD_ASSERT (!elf_flags_init (abfd) | |
5759 | || elf_elfheader (abfd)->e_flags == flags); | |
5760 | ||
5761 | elf_elfheader (abfd)->e_flags = flags; | |
5762 | elf_flags_init (abfd) = TRUE; | |
5763 | return TRUE; | |
5764 | } | |
5765 | ||
5766 | static unsigned int | |
5767 | convert_e_flags (unsigned int e_flags, unsigned int arch) | |
5768 | { | |
5769 | if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9) | |
5770 | { | |
5771 | /* From 0.9 to 1.0. */ | |
5772 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0; | |
5773 | ||
5774 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5775 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5776 | if (arch == E_NDS_ARCH_STAR_V1_0) | |
5777 | { | |
5778 | /* Done. */ | |
5779 | return e_flags; | |
5780 | } | |
5781 | } | |
5782 | ||
5783 | /* From 1.0 to 2.0. */ | |
5784 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0; | |
5785 | ||
5786 | /* Clear E_NDS32_HAS_MFUSR_PC_INST. */ | |
5787 | e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST; | |
5788 | ||
5789 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5790 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5791 | return e_flags; | |
5792 | } | |
5793 | ||
5794 | static bfd_boolean | |
5795 | nds32_check_vec_size (bfd *ibfd) | |
5796 | { | |
5797 | static unsigned int nds32_vec_size = 0; | |
5798 | ||
5799 | asection *sec_t = NULL; | |
5800 | bfd_byte *contents = NULL; | |
5801 | ||
5802 | sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags"); | |
5803 | ||
5804 | if (sec_t && sec_t->size >= 4) | |
5805 | { | |
5806 | /* Get vec_size in file. */ | |
5807 | unsigned int flag_t; | |
5808 | ||
0c4bd9d9 | 5809 | nds32_get_section_contents (ibfd, sec_t, &contents, TRUE); |
35c08157 KLC |
5810 | flag_t = bfd_get_32 (ibfd, contents); |
5811 | ||
5812 | /* The value could only be 4 or 16. */ | |
5813 | ||
5814 | if (!nds32_vec_size) | |
5815 | /* Set if not set yet. */ | |
5816 | nds32_vec_size = (flag_t & 0x3); | |
5817 | else if (nds32_vec_size != (flag_t & 0x3)) | |
5818 | { | |
4eca0228 | 5819 | _bfd_error_handler |
695344c0 | 5820 | /* xgettext:c-format */ |
871b3ab2 | 5821 | (_("%pB: ISR vector size mismatch" |
4eca0228 AM |
5822 | " with previous modules, previous %u-byte, current %u-byte"), |
5823 | ibfd, | |
5824 | nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff, | |
5825 | (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff); | |
35c08157 KLC |
5826 | return FALSE; |
5827 | } | |
5828 | else | |
5829 | /* Only keep the first vec_size section. */ | |
5830 | sec_t->flags |= SEC_EXCLUDE; | |
5831 | } | |
5832 | ||
5833 | return TRUE; | |
5834 | } | |
5835 | ||
5836 | /* Merge backend specific data from an object file to the output | |
5837 | object file when linking. */ | |
5838 | ||
5839 | static bfd_boolean | |
50e03d47 | 5840 | nds32_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
35c08157 | 5841 | { |
50e03d47 | 5842 | bfd *obfd = info->output_bfd; |
35c08157 KLC |
5843 | flagword out_flags; |
5844 | flagword in_flags; | |
5845 | flagword out_16regs; | |
5846 | flagword in_no_mac; | |
5847 | flagword out_no_mac; | |
5848 | flagword in_16regs; | |
5849 | flagword out_version; | |
5850 | flagword in_version; | |
5851 | flagword out_fpu_config; | |
5852 | flagword in_fpu_config; | |
5853 | ||
5854 | /* TODO: Revise to use object-attributes instead. */ | |
5855 | if (!nds32_check_vec_size (ibfd)) | |
5856 | return FALSE; | |
5857 | ||
5858 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5859 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5860 | return TRUE; | |
5861 | ||
5862 | if (bfd_little_endian (ibfd) != bfd_little_endian (obfd)) | |
5863 | { | |
4eca0228 | 5864 | _bfd_error_handler |
38f14ab8 | 5865 | (_("%pB: warning: endian mismatch with previous modules"), ibfd); |
35c08157 KLC |
5866 | |
5867 | bfd_set_error (bfd_error_bad_value); | |
5868 | return FALSE; | |
5869 | } | |
5870 | ||
5871 | in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION; | |
5872 | if (in_version == E_NDS32_ELF_VER_1_2) | |
5873 | { | |
4eca0228 | 5874 | _bfd_error_handler |
38f14ab8 AM |
5875 | (_("%pB: warning: older version of object file encountered, " |
5876 | "please recompile with current tool chain"), ibfd); | |
35c08157 KLC |
5877 | } |
5878 | ||
5879 | /* We may need to merge V1 and V2 arch object files to V2. */ | |
5880 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
5881 | != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
5882 | { | |
5883 | /* Need to convert version. */ | |
5884 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
5885 | == E_NDS_ARCH_STAR_RESERVED) | |
5886 | { | |
5887 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
5888 | } | |
5889 | else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9 | |
5890 | || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
5891 | > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
5892 | { | |
5893 | elf_elfheader (obfd)->e_flags = | |
5894 | convert_e_flags (elf_elfheader (obfd)->e_flags, | |
5895 | (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)); | |
5896 | } | |
5897 | else | |
5898 | { | |
5899 | elf_elfheader (ibfd)->e_flags = | |
5900 | convert_e_flags (elf_elfheader (ibfd)->e_flags, | |
5901 | (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)); | |
5902 | } | |
5903 | } | |
5904 | ||
5905 | /* Extract some flags. */ | |
5906 | in_flags = elf_elfheader (ibfd)->e_flags | |
5907 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
5908 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
5909 | ||
5910 | /* The following flags need special treatment. */ | |
5911 | in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
5912 | in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
5913 | in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
5914 | ||
5915 | /* Extract some flags. */ | |
5916 | out_flags = elf_elfheader (obfd)->e_flags | |
5917 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
5918 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
5919 | ||
5920 | /* The following flags need special treatment. */ | |
5921 | out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
5922 | out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
5923 | out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
5924 | out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION; | |
5925 | if (!elf_flags_init (obfd)) | |
5926 | { | |
5927 | /* If the input is the default architecture then do not | |
5928 | bother setting the flags for the output architecture, | |
5929 | instead allow future merges to do this. If no future | |
5930 | merges ever set these flags then they will retain their | |
5931 | unitialised values, which surprise surprise, correspond | |
5932 | to the default values. */ | |
5933 | if (bfd_get_arch_info (ibfd)->the_default) | |
5934 | return TRUE; | |
5935 | ||
5936 | elf_flags_init (obfd) = TRUE; | |
5937 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
5938 | ||
5939 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
5940 | && bfd_get_arch_info (obfd)->the_default) | |
5941 | { | |
5942 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
5943 | bfd_get_mach (ibfd)); | |
5944 | } | |
5945 | ||
5946 | return TRUE; | |
5947 | } | |
5948 | ||
5949 | /* Check flag compatibility. */ | |
5950 | if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI)) | |
5951 | { | |
4eca0228 | 5952 | _bfd_error_handler |
38f14ab8 | 5953 | (_("%pB: error: ABI mismatch with previous modules"), ibfd); |
35c08157 KLC |
5954 | |
5955 | bfd_set_error (bfd_error_bad_value); | |
5956 | return FALSE; | |
5957 | } | |
5958 | ||
5959 | if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH)) | |
5960 | { | |
5961 | if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH)) | |
5962 | { | |
4eca0228 | 5963 | _bfd_error_handler |
38f14ab8 AM |
5964 | (_("%pB: error: instruction set mismatch with previous modules"), |
5965 | ibfd); | |
35c08157 KLC |
5966 | |
5967 | bfd_set_error (bfd_error_bad_value); | |
5968 | return FALSE; | |
5969 | } | |
5970 | } | |
5971 | ||
5972 | /* When linking with V1.2 and V1.3 objects together the output is V1.2. | |
5973 | and perf ext1 and DIV are mergerd to perf ext1. */ | |
5974 | if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2) | |
5975 | { | |
5976 | elf_elfheader (obfd)->e_flags = | |
5977 | (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
5978 | | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
5979 | | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
5980 | ? E_NDS32_HAS_EXT_INST : 0) | |
5981 | | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
5982 | ? E_NDS32_HAS_EXT_INST : 0) | |
5983 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
5984 | | ((in_version > out_version) ? out_version : in_version); | |
5985 | } | |
5986 | else | |
5987 | { | |
5988 | if (in_version != out_version) | |
4eca0228 | 5989 | _bfd_error_handler |
695344c0 | 5990 | /* xgettext:c-format */ |
38f14ab8 | 5991 | (_("%pB: warning: incompatible elf-versions %s and %s"), |
4eca0228 AM |
5992 | ibfd, nds32_elfver_strtab[out_version], |
5993 | nds32_elfver_strtab[in_version]); | |
35c08157 KLC |
5994 | |
5995 | elf_elfheader (obfd)->e_flags = in_flags | out_flags | |
5996 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
5997 | | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config) | |
5998 | | (in_version > out_version ? out_version : in_version); | |
5999 | } | |
6000 | ||
6001 | return TRUE; | |
6002 | } | |
6003 | ||
6004 | /* Display the flags field. */ | |
6005 | ||
6006 | static bfd_boolean | |
6007 | nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6008 | { | |
6009 | FILE *file = (FILE *) ptr; | |
6010 | ||
6011 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6012 | ||
6013 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6014 | ||
6015 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); | |
6016 | ||
6017 | switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH) | |
6018 | { | |
6019 | default: | |
6020 | case E_N1_ARCH: | |
6021 | fprintf (file, _(": n1 instructions")); | |
6022 | break; | |
6023 | case E_N1H_ARCH: | |
6024 | fprintf (file, _(": n1h instructions")); | |
6025 | break; | |
6026 | } | |
6027 | ||
6028 | fputc ('\n', file); | |
6029 | ||
6030 | return TRUE; | |
6031 | } | |
6032 | ||
6033 | static unsigned int | |
6034 | nds32_elf_action_discarded (asection *sec) | |
6035 | { | |
6036 | ||
6037 | if (strncmp | |
6038 | (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0) | |
6039 | return 0; | |
6040 | ||
6041 | return _bfd_elf_default_action_discarded (sec); | |
6042 | } | |
6043 | ||
6044 | static asection * | |
6045 | nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
6046 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h, | |
6047 | Elf_Internal_Sym *sym) | |
6048 | { | |
6049 | if (h != NULL) | |
6050 | switch (ELF32_R_TYPE (rel->r_info)) | |
6051 | { | |
6052 | case R_NDS32_GNU_VTINHERIT: | |
6053 | case R_NDS32_GNU_VTENTRY: | |
6054 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6055 | case R_NDS32_RELA_GNU_VTENTRY: | |
6056 | return NULL; | |
6057 | } | |
6058 | ||
6059 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
6060 | } | |
6061 | ||
35c08157 KLC |
6062 | /* Look through the relocs for a section during the first phase. |
6063 | Since we don't do .gots or .plts, we just need to consider the | |
6064 | virtual table relocs for gc. */ | |
6065 | ||
6066 | static bfd_boolean | |
6067 | nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
6068 | asection *sec, const Elf_Internal_Rela *relocs) | |
6069 | { | |
6070 | Elf_Internal_Shdr *symtab_hdr; | |
6071 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
6072 | const Elf_Internal_Rela *rel; | |
6073 | const Elf_Internal_Rela *rel_end; | |
6074 | struct elf_nds32_link_hash_table *htab; | |
6075 | bfd *dynobj; | |
6076 | asection *sreloc = NULL; | |
6077 | ||
0e1862bb | 6078 | if (bfd_link_relocatable (info)) |
35c08157 KLC |
6079 | return TRUE; |
6080 | ||
65281396 AM |
6081 | /* Don't do anything special with non-loaded, non-alloced sections. |
6082 | In particular, any relocs in such sections should not affect GOT | |
6083 | and PLT reference counting (ie. we don't allow them to create GOT | |
6084 | or PLT entries), there's no possibility or desire to optimize TLS | |
6085 | relocs, and there's not much point in propagating relocs to shared | |
6086 | libs that the dynamic linker won't relocate. */ | |
6087 | if ((sec->flags & SEC_ALLOC) == 0) | |
6088 | return TRUE; | |
6089 | ||
35c08157 KLC |
6090 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
6091 | sym_hashes = elf_sym_hashes (abfd); | |
6092 | sym_hashes_end = | |
6093 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
6094 | if (!elf_bad_symtab (abfd)) | |
6095 | sym_hashes_end -= symtab_hdr->sh_info; | |
6096 | ||
6097 | htab = nds32_elf_hash_table (info); | |
6098 | dynobj = htab->root.dynobj; | |
6099 | ||
6100 | rel_end = relocs + sec->reloc_count; | |
6101 | for (rel = relocs; rel < rel_end; rel++) | |
6102 | { | |
6103 | enum elf_nds32_reloc_type r_type; | |
6104 | struct elf_link_hash_entry *h; | |
6105 | unsigned long r_symndx; | |
1c8f6a4d | 6106 | int tls_type, old_tls_type; |
35c08157 KLC |
6107 | |
6108 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6109 | r_type = ELF32_R_TYPE (rel->r_info); | |
6110 | if (r_symndx < symtab_hdr->sh_info) | |
6111 | h = NULL; | |
6112 | else | |
6113 | { | |
6114 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6115 | while (h->root.type == bfd_link_hash_indirect | |
6116 | || h->root.type == bfd_link_hash_warning) | |
6117 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6118 | } | |
6119 | ||
1c8f6a4d KLC |
6120 | /* Some relocs require a global offset table. We create |
6121 | got section here, since these relocation need got section | |
6122 | and it is not created yet. */ | |
ce558b89 | 6123 | if (htab->root.sgot == NULL) |
35c08157 KLC |
6124 | { |
6125 | switch (r_type) | |
6126 | { | |
6127 | case R_NDS32_GOT_HI20: | |
6128 | case R_NDS32_GOT_LO12: | |
6129 | case R_NDS32_GOT_LO15: | |
6130 | case R_NDS32_GOT_LO19: | |
6131 | case R_NDS32_GOT17S2_RELA: | |
6132 | case R_NDS32_GOT15S2_RELA: | |
6133 | case R_NDS32_GOTOFF: | |
6134 | case R_NDS32_GOTOFF_HI20: | |
6135 | case R_NDS32_GOTOFF_LO12: | |
6136 | case R_NDS32_GOTOFF_LO15: | |
6137 | case R_NDS32_GOTOFF_LO19: | |
6138 | case R_NDS32_GOTPC20: | |
6139 | case R_NDS32_GOTPC_HI20: | |
6140 | case R_NDS32_GOTPC_LO12: | |
6141 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6142 | case R_NDS32_TLS_IE_HI20: |
6143 | case R_NDS32_TLS_IE_LO12S2: | |
35c08157 KLC |
6144 | if (dynobj == NULL) |
6145 | htab->root.dynobj = dynobj = abfd; | |
ce558b89 | 6146 | if (!_bfd_elf_create_got_section (dynobj, info)) |
35c08157 KLC |
6147 | return FALSE; |
6148 | break; | |
6149 | ||
6150 | default: | |
6151 | break; | |
6152 | } | |
6153 | } | |
6154 | ||
6155 | switch ((int) r_type) | |
6156 | { | |
6157 | case R_NDS32_GOT_HI20: | |
6158 | case R_NDS32_GOT_LO12: | |
6159 | case R_NDS32_GOT_LO15: | |
6160 | case R_NDS32_GOT_LO19: | |
6161 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6162 | case R_NDS32_TLS_IE_HI20: |
6163 | case R_NDS32_TLS_IE_LO12S2: | |
6164 | switch (r_type) | |
6165 | { | |
6166 | case R_NDS32_TLS_IE_HI20: | |
6167 | case R_NDS32_TLS_IE_LO12S2: | |
6168 | tls_type = GOT_TLS_IE; | |
6169 | break; | |
6170 | default: | |
6171 | tls_type = GOT_NORMAL; | |
6172 | break; | |
6173 | } | |
35c08157 | 6174 | if (h != NULL) |
1c8f6a4d KLC |
6175 | { |
6176 | old_tls_type = elf32_nds32_hash_entry (h)->tls_type; | |
6177 | h->got.refcount += 1; | |
6178 | } | |
35c08157 KLC |
6179 | else |
6180 | { | |
6181 | bfd_signed_vma *local_got_refcounts; | |
6182 | ||
6183 | /* This is a global offset table entry for a local | |
6184 | symbol. */ | |
6185 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6186 | if (local_got_refcounts == NULL) | |
6187 | { | |
6188 | bfd_size_type size; | |
6189 | ||
6190 | size = symtab_hdr->sh_info; | |
6191 | size *= sizeof (bfd_signed_vma); | |
6192 | local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size); | |
6193 | if (local_got_refcounts == NULL) | |
6194 | return FALSE; | |
6195 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
6196 | } | |
6197 | local_got_refcounts[r_symndx] += 1; | |
1c8f6a4d | 6198 | old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx]; |
35c08157 | 6199 | } |
35c08157 | 6200 | |
1c8f6a4d KLC |
6201 | /* We will already have issued an error message if there |
6202 | is a TLS/non-TLS mismatch, based on the symbol | |
6203 | type. So just combine any TLS types needed. */ | |
6204 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
6205 | && tls_type != GOT_NORMAL) | |
6206 | tls_type |= old_tls_type; | |
6207 | ||
6208 | if (old_tls_type != tls_type) | |
6209 | { | |
6210 | if (h != NULL) | |
6211 | elf32_nds32_hash_entry (h)->tls_type = tls_type; | |
6212 | else | |
6213 | elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type; | |
6214 | } | |
6215 | break; | |
6216 | case R_NDS32_9_PLTREL: | |
35c08157 KLC |
6217 | case R_NDS32_25_PLTREL: |
6218 | case R_NDS32_PLTREL_HI20: | |
6219 | case R_NDS32_PLTREL_LO12: | |
6220 | case R_NDS32_PLT_GOTREL_HI20: | |
6221 | case R_NDS32_PLT_GOTREL_LO12: | |
6222 | case R_NDS32_PLT_GOTREL_LO15: | |
6223 | case R_NDS32_PLT_GOTREL_LO19: | |
6224 | case R_NDS32_PLT_GOTREL_LO20: | |
6225 | ||
6226 | /* This symbol requires a procedure linkage table entry. We | |
6227 | actually build the entry in adjust_dynamic_symbol, | |
6228 | because this might be a case of linking PIC code without | |
6229 | linking in any dynamic objects, in which case we don't | |
6230 | need to generate a procedure linkage table after all. */ | |
6231 | ||
6232 | /* If this is a local symbol, we resolve it directly without | |
6233 | creating a procedure linkage table entry. */ | |
6234 | if (h == NULL) | |
6235 | continue; | |
6236 | ||
6237 | if (h->forced_local) | |
6238 | break; | |
6239 | ||
1c8f6a4d | 6240 | elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL; |
35c08157 KLC |
6241 | h->needs_plt = 1; |
6242 | h->plt.refcount += 1; | |
6243 | break; | |
6244 | ||
6245 | case R_NDS32_16_RELA: | |
6246 | case R_NDS32_20_RELA: | |
6247 | case R_NDS32_5_RELA: | |
6248 | case R_NDS32_32_RELA: | |
6249 | case R_NDS32_HI20_RELA: | |
6250 | case R_NDS32_LO12S3_RELA: | |
6251 | case R_NDS32_LO12S2_RELA: | |
6252 | case R_NDS32_LO12S2_DP_RELA: | |
6253 | case R_NDS32_LO12S2_SP_RELA: | |
6254 | case R_NDS32_LO12S1_RELA: | |
6255 | case R_NDS32_LO12S0_RELA: | |
6256 | case R_NDS32_LO12S0_ORI_RELA: | |
6257 | case R_NDS32_SDA16S3_RELA: | |
6258 | case R_NDS32_SDA17S2_RELA: | |
6259 | case R_NDS32_SDA18S1_RELA: | |
6260 | case R_NDS32_SDA19S0_RELA: | |
6261 | case R_NDS32_SDA15S3_RELA: | |
6262 | case R_NDS32_SDA15S2_RELA: | |
6263 | case R_NDS32_SDA12S2_DP_RELA: | |
6264 | case R_NDS32_SDA12S2_SP_RELA: | |
6265 | case R_NDS32_SDA15S1_RELA: | |
6266 | case R_NDS32_SDA15S0_RELA: | |
6267 | case R_NDS32_SDA_FP7U2_RELA: | |
6268 | case R_NDS32_15_PCREL_RELA: | |
6269 | case R_NDS32_17_PCREL_RELA: | |
6270 | case R_NDS32_25_PCREL_RELA: | |
6271 | ||
0e1862bb | 6272 | if (h != NULL && !bfd_link_pic (info)) |
35c08157 KLC |
6273 | { |
6274 | h->non_got_ref = 1; | |
6275 | h->plt.refcount += 1; | |
6276 | } | |
6277 | ||
6278 | /* If we are creating a shared library, and this is a reloc against | |
6279 | a global symbol, or a non PC relative reloc against a local | |
6280 | symbol, then we need to copy the reloc into the shared library. | |
6281 | However, if we are linking with -Bsymbolic, we do not need to | |
6282 | copy a reloc against a global symbol which is defined in an | |
6283 | object we are including in the link (i.e., DEF_REGULAR is set). | |
6284 | At this point we have not seen all the input files, so it is | |
6285 | possible that DEF_REGULAR is not set now but will be set later | |
6286 | (it is never cleared). We account for that possibility below by | |
6287 | storing information in the dyn_relocs field of the hash table | |
6288 | entry. A similar situation occurs when creating shared libraries | |
6289 | and symbol visibility changes render the symbol local. | |
6290 | ||
6291 | If on the other hand, we are creating an executable, we may need | |
6292 | to keep relocations for symbols satisfied by a dynamic library | |
6293 | if we manage to avoid copy relocs for the symbol. */ | |
0e1862bb | 6294 | if ((bfd_link_pic (info) |
35c08157 KLC |
6295 | && (sec->flags & SEC_ALLOC) != 0 |
6296 | && ((r_type != R_NDS32_25_PCREL_RELA | |
6297 | && r_type != R_NDS32_15_PCREL_RELA | |
6298 | && r_type != R_NDS32_17_PCREL_RELA | |
6299 | && !(r_type == R_NDS32_32_RELA | |
6300 | && strcmp (sec->name, ".eh_frame") == 0)) | |
6301 | || (h != NULL | |
6302 | && (!info->symbolic | |
6303 | || h->root.type == bfd_link_hash_defweak | |
6304 | || !h->def_regular)))) | |
0e1862bb | 6305 | || (!bfd_link_pic (info) |
35c08157 KLC |
6306 | && (sec->flags & SEC_ALLOC) != 0 |
6307 | && h != NULL | |
6308 | && (h->root.type == bfd_link_hash_defweak | |
6309 | || !h->def_regular))) | |
6310 | { | |
3bf083ed AM |
6311 | struct elf_dyn_relocs *p; |
6312 | struct elf_dyn_relocs **head; | |
35c08157 KLC |
6313 | |
6314 | if (dynobj == NULL) | |
6315 | htab->root.dynobj = dynobj = abfd; | |
6316 | ||
6317 | /* When creating a shared object, we must copy these | |
6318 | relocs into the output file. We create a reloc | |
6319 | section in dynobj and make room for the reloc. */ | |
6320 | if (sreloc == NULL) | |
6321 | { | |
6322 | const char *name; | |
6323 | ||
6324 | name = bfd_elf_string_from_elf_section | |
6325 | (abfd, elf_elfheader (abfd)->e_shstrndx, | |
6326 | elf_section_data (sec)->rela.hdr->sh_name); | |
6327 | if (name == NULL) | |
6328 | return FALSE; | |
6329 | ||
6330 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
6331 | && strcmp (bfd_get_section_name (abfd, sec), | |
6332 | name + 5) == 0); | |
6333 | ||
6334 | sreloc = bfd_get_section_by_name (dynobj, name); | |
6335 | if (sreloc == NULL) | |
6336 | { | |
6337 | flagword flags; | |
6338 | ||
6339 | sreloc = bfd_make_section (dynobj, name); | |
6340 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
6341 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
6342 | if ((sec->flags & SEC_ALLOC) != 0) | |
6343 | flags |= SEC_ALLOC | SEC_LOAD; | |
6344 | if (sreloc == NULL | |
6345 | || !bfd_set_section_flags (dynobj, sreloc, flags) | |
6346 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
6347 | return FALSE; | |
6348 | ||
6349 | elf_section_type (sreloc) = SHT_RELA; | |
6350 | } | |
6351 | elf_section_data (sec)->sreloc = sreloc; | |
6352 | } | |
6353 | ||
6354 | /* If this is a global symbol, we count the number of | |
6355 | relocations we need for this symbol. */ | |
6356 | if (h != NULL) | |
6357 | head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs; | |
6358 | else | |
6359 | { | |
6360 | asection *s; | |
61034b0b | 6361 | void *vpp; |
35c08157 KLC |
6362 | |
6363 | Elf_Internal_Sym *isym; | |
6364 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); | |
6365 | if (isym == NULL) | |
6366 | return FALSE; | |
6367 | ||
6368 | /* Track dynamic relocs needed for local syms too. */ | |
6369 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6370 | if (s == NULL) | |
6371 | return FALSE; | |
6372 | ||
61034b0b | 6373 | vpp = &elf_section_data (s)->local_dynrel; |
3bf083ed | 6374 | head = (struct elf_dyn_relocs **) vpp; |
35c08157 KLC |
6375 | } |
6376 | ||
6377 | p = *head; | |
6378 | if (p == NULL || p->sec != sec) | |
6379 | { | |
6380 | bfd_size_type amt = sizeof (*p); | |
3bf083ed | 6381 | p = (struct elf_dyn_relocs *) bfd_alloc (dynobj, amt); |
35c08157 KLC |
6382 | if (p == NULL) |
6383 | return FALSE; | |
6384 | p->next = *head; | |
6385 | *head = p; | |
6386 | p->sec = sec; | |
6387 | p->count = 0; | |
6388 | p->pc_count = 0; | |
6389 | } | |
6390 | ||
6391 | p->count += 1; | |
6392 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA | |
6393 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA | |
6394 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA) | |
6395 | p->pc_count += 1; | |
6396 | } | |
6397 | break; | |
6398 | ||
6399 | /* This relocation describes the C++ object vtable hierarchy. | |
6400 | Reconstruct it for later use during GC. */ | |
6401 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6402 | case R_NDS32_GNU_VTINHERIT: | |
6403 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
6404 | return FALSE; | |
6405 | break; | |
6406 | ||
6407 | /* This relocation describes which C++ vtable entries are actually | |
6408 | used. Record for later use during GC. */ | |
6409 | case R_NDS32_GNU_VTENTRY: | |
6410 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
6411 | return FALSE; | |
6412 | break; | |
6413 | case R_NDS32_RELA_GNU_VTENTRY: | |
6414 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
6415 | return FALSE; | |
6416 | break; | |
6417 | } | |
6418 | } | |
6419 | ||
6420 | return TRUE; | |
6421 | } | |
6422 | ||
6423 | /* Write VAL in uleb128 format to P, returning a pointer to the | |
6424 | following byte. | |
6425 | This code is copied from elf-attr.c. */ | |
6426 | ||
6427 | static bfd_byte * | |
6428 | write_uleb128 (bfd_byte *p, unsigned int val) | |
6429 | { | |
6430 | bfd_byte c; | |
6431 | do | |
6432 | { | |
6433 | c = val & 0x7f; | |
6434 | val >>= 7; | |
6435 | if (val) | |
6436 | c |= 0x80; | |
6437 | *(p++) = c; | |
6438 | } | |
6439 | while (val); | |
6440 | return p; | |
6441 | } | |
6442 | ||
6443 | static bfd_signed_vma | |
6444 | calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
6445 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr, | |
6446 | int *pic_ext_target) | |
6447 | { | |
6448 | bfd_signed_vma foff; | |
6449 | bfd_vma symval, addend; | |
6450 | asection *sym_sec; | |
6451 | ||
6452 | /* Get the value of the symbol referred to by the reloc. */ | |
6453 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6454 | { | |
6455 | Elf_Internal_Sym *isym; | |
6456 | ||
6457 | /* A local symbol. */ | |
6458 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6459 | ||
6460 | if (isym->st_shndx == SHN_UNDEF) | |
6461 | sym_sec = bfd_und_section_ptr; | |
6462 | else if (isym->st_shndx == SHN_ABS) | |
6463 | sym_sec = bfd_abs_section_ptr; | |
6464 | else if (isym->st_shndx == SHN_COMMON) | |
6465 | sym_sec = bfd_com_section_ptr; | |
6466 | else | |
6467 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6468 | symval = isym->st_value + sym_sec->output_section->vma | |
6469 | + sym_sec->output_offset; | |
6470 | } | |
6471 | else | |
6472 | { | |
6473 | unsigned long indx; | |
6474 | struct elf_link_hash_entry *h; | |
6475 | bfd *owner; | |
6476 | ||
6477 | /* An external symbol. */ | |
6478 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6479 | h = elf_sym_hashes (abfd)[indx]; | |
6480 | BFD_ASSERT (h != NULL); | |
6481 | ||
6482 | if (h->root.type != bfd_link_hash_defined | |
6483 | && h->root.type != bfd_link_hash_defweak) | |
6484 | /* This appears to be a reference to an undefined | |
6485 | symbol. Just ignore it--it will be caught by the | |
6486 | regular reloc processing. */ | |
6487 | return 0; | |
6488 | owner = h->root.u.def.section->owner; | |
6489 | if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC)) | |
6490 | *pic_ext_target = 1; | |
6491 | ||
6492 | if (h->root.u.def.section->flags & SEC_MERGE) | |
6493 | { | |
6494 | sym_sec = h->root.u.def.section; | |
6495 | symval = _bfd_merged_section_offset (abfd, &sym_sec, | |
6496 | elf_section_data (sym_sec)->sec_info, | |
6497 | h->root.u.def.value); | |
6498 | symval = symval + sym_sec->output_section->vma | |
6499 | + sym_sec->output_offset; | |
6500 | } | |
6501 | else | |
6502 | symval = (h->root.u.def.value | |
6503 | + h->root.u.def.section->output_section->vma | |
6504 | + h->root.u.def.section->output_offset); | |
6505 | } | |
6506 | ||
6507 | addend = irel->r_addend; | |
6508 | ||
6509 | foff = (symval + addend | |
6510 | - (irel->r_offset + sec->output_section->vma + sec->output_offset)); | |
6511 | return foff; | |
6512 | } | |
6513 | ||
6514 | static bfd_vma | |
6515 | calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
6516 | Elf_Internal_Sym *isymbuf, | |
6517 | Elf_Internal_Rela *irel, | |
6518 | Elf_Internal_Shdr *symtab_hdr) | |
6519 | { | |
6520 | bfd_vma symval; | |
6521 | ||
6522 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6523 | { | |
6524 | Elf_Internal_Sym *isym; | |
6525 | asection *sym_sec; | |
6526 | /* A local symbol. */ | |
6527 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6528 | ||
6529 | if (isym->st_shndx == SHN_UNDEF) | |
6530 | sym_sec = bfd_und_section_ptr; | |
6531 | else if (isym->st_shndx == SHN_ABS) | |
6532 | sym_sec = bfd_abs_section_ptr; | |
6533 | else if (isym->st_shndx == SHN_COMMON) | |
6534 | sym_sec = bfd_com_section_ptr; | |
6535 | else | |
6536 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6537 | symval = isym->st_value + sym_sec->output_section->vma | |
6538 | + sym_sec->output_offset; | |
6539 | } | |
6540 | else | |
6541 | { | |
6542 | unsigned long indx; | |
6543 | struct elf_link_hash_entry *h; | |
6544 | struct elf_nds32_link_hash_table *htab; | |
6545 | asection *splt; | |
6546 | ||
6547 | /* An external symbol. */ | |
6548 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6549 | h = elf_sym_hashes (abfd)[indx]; | |
6550 | BFD_ASSERT (h != NULL); | |
6551 | htab = nds32_elf_hash_table (link_info); | |
ce558b89 | 6552 | splt = htab->root.splt; |
35c08157 KLC |
6553 | |
6554 | while (h->root.type == bfd_link_hash_indirect | |
6555 | || h->root.type == bfd_link_hash_warning) | |
6556 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6557 | ||
6558 | if (h->plt.offset == (bfd_vma) - 1) | |
6559 | { | |
6560 | if (h->root.type != bfd_link_hash_defined | |
6561 | && h->root.type != bfd_link_hash_defweak) | |
6562 | /* This appears to be a reference to an undefined | |
6563 | * symbol. Just ignore it--it will be caught by the | |
6564 | * regular reloc processing. */ | |
6565 | return 0; | |
6566 | symval = (h->root.u.def.value | |
6567 | + h->root.u.def.section->output_section->vma | |
6568 | + h->root.u.def.section->output_offset); | |
6569 | } | |
6570 | else | |
6571 | symval = splt->output_section->vma + h->plt.offset; | |
6572 | } | |
6573 | ||
6574 | return symval; | |
6575 | } | |
6576 | ||
6577 | static bfd_signed_vma | |
6578 | calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
6579 | Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel, | |
6580 | Elf_Internal_Shdr *symtab_hdr) | |
6581 | { | |
6582 | bfd_vma foff; | |
6583 | if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
6584 | symtab_hdr)) == 0) | |
6585 | return 0; | |
6586 | else | |
6587 | return foff - (irel->r_offset | |
6588 | + sec->output_section->vma + sec->output_offset); | |
6589 | } | |
6590 | \f | |
6591 | /* Convert a 32-bit instruction to 16-bit one. | |
6592 | INSN is the input 32-bit instruction, INSN16 is the output 16-bit | |
6593 | instruction. If INSN_TYPE is not NULL, it the CGEN instruction | |
6594 | type of INSN16. Return 1 if successful. */ | |
6595 | ||
6596 | static int | |
6597 | nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
6598 | int *pinsn_type) | |
6599 | { | |
6600 | uint16_t insn16 = 0; | |
6cae483a | 6601 | int insn_type = 0; |
35c08157 KLC |
6602 | unsigned long mach = bfd_get_mach (abfd); |
6603 | ||
6604 | if (N32_SH5 (insn) != 0) | |
6605 | return 0; | |
6606 | ||
6607 | switch (N32_SUB5 (insn)) | |
6608 | { | |
6609 | case N32_ALU1_ADD_SLLI: | |
6610 | case N32_ALU1_ADD_SRLI: | |
6611 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6612 | { | |
6613 | insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn), | |
6614 | N32_RB5 (insn)); | |
6615 | insn_type = NDS32_INSN_ADD333; | |
6616 | } | |
6617 | else if (N32_IS_RT4 (insn)) | |
6618 | { | |
6619 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6620 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn)); | |
6621 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6622 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn)); | |
6623 | insn_type = NDS32_INSN_ADD45; | |
6624 | } | |
6625 | break; | |
6626 | ||
6627 | case N32_ALU1_SUB_SLLI: | |
6628 | case N32_ALU1_SUB_SRLI: | |
6629 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6630 | { | |
6631 | insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn), | |
6632 | N32_RB5 (insn)); | |
6633 | insn_type = NDS32_INSN_SUB333; | |
6634 | } | |
6635 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6636 | { | |
6637 | insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn)); | |
6638 | insn_type = NDS32_INSN_SUB45; | |
6639 | } | |
6640 | break; | |
6641 | ||
6642 | case N32_ALU1_AND_SLLI: | |
6643 | case N32_ALU1_AND_SRLI: | |
6644 | /* and $rt, $rt, $rb -> and33 for v3, v3m. */ | |
6645 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6646 | && N32_IS_RB3 (insn)) | |
6647 | { | |
6648 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6649 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn)); | |
6650 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6651 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn)); | |
6652 | if (insn16) | |
6653 | insn_type = NDS32_INSN_AND33; | |
6654 | } | |
6655 | break; | |
6656 | ||
6657 | case N32_ALU1_XOR_SLLI: | |
6658 | case N32_ALU1_XOR_SRLI: | |
6659 | /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */ | |
6660 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6661 | && N32_IS_RB3 (insn)) | |
6662 | { | |
6663 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6664 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6665 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6666 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6667 | if (insn16) | |
6668 | insn_type = NDS32_INSN_XOR33; | |
6669 | } | |
6670 | break; | |
6671 | ||
6672 | case N32_ALU1_OR_SLLI: | |
6673 | case N32_ALU1_OR_SRLI: | |
6674 | /* or $rt, $rt, $rb -> or33 for v3, v3m. */ | |
6675 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6676 | && N32_IS_RB3 (insn)) | |
6677 | { | |
6678 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6679 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6680 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6681 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6682 | if (insn16) | |
6683 | insn_type = NDS32_INSN_OR33; | |
6684 | } | |
6685 | break; | |
6686 | case N32_ALU1_NOR: | |
6687 | /* nor $rt, $ra, $ra -> not33 for v3, v3m. */ | |
6688 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn) | |
6689 | && N32_RA5 (insn) == N32_RB5 (insn)) | |
6690 | { | |
6691 | insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn)); | |
6692 | insn_type = NDS32_INSN_NOT33; | |
6693 | } | |
6694 | break; | |
6695 | case N32_ALU1_SRAI: | |
6696 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6697 | { | |
6698 | insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6699 | insn_type = NDS32_INSN_SRAI45; | |
6700 | } | |
6701 | break; | |
6702 | ||
6703 | case N32_ALU1_SRLI: | |
6704 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6705 | { | |
6706 | insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6707 | insn_type = NDS32_INSN_SRLI45; | |
6708 | } | |
6709 | break; | |
6710 | ||
6711 | case N32_ALU1_SLLI: | |
6712 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8) | |
6713 | { | |
6714 | insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn), | |
6715 | N32_UB5 (insn)); | |
6716 | insn_type = NDS32_INSN_SLLI333; | |
6717 | } | |
6718 | break; | |
6719 | ||
6720 | case N32_ALU1_ZEH: | |
6721 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6722 | { | |
6723 | insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
6724 | insn_type = NDS32_INSN_ZEH33; | |
6725 | } | |
6726 | break; | |
6727 | ||
6728 | case N32_ALU1_SEB: | |
6729 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6730 | { | |
6731 | insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
6732 | insn_type = NDS32_INSN_SEB33; | |
6733 | } | |
6734 | break; | |
6735 | ||
6736 | case N32_ALU1_SEH: | |
6737 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6738 | { | |
6739 | insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
6740 | insn_type = NDS32_INSN_SEH33; | |
6741 | } | |
6742 | break; | |
6743 | ||
6744 | case N32_ALU1_SLT: | |
6745 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
6746 | { | |
6747 | /* Implicit r15. */ | |
6748 | insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn)); | |
6749 | insn_type = NDS32_INSN_SLT45; | |
6750 | } | |
6751 | break; | |
6752 | ||
6753 | case N32_ALU1_SLTS: | |
6754 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
6755 | { | |
6756 | /* Implicit r15. */ | |
6757 | insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn)); | |
6758 | insn_type = NDS32_INSN_SLTS45; | |
6759 | } | |
6760 | break; | |
6761 | } | |
6762 | ||
6763 | if ((insn16 & 0x8000) == 0) | |
6764 | return 0; | |
6765 | ||
6766 | if (pinsn16) | |
6767 | *pinsn16 = insn16; | |
6768 | if (pinsn_type) | |
6769 | *pinsn_type = insn_type; | |
6770 | return 1; | |
6771 | } | |
6772 | ||
6773 | static int | |
6774 | nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
6775 | int *pinsn_type) | |
6776 | { | |
6777 | uint16_t insn16 = 0; | |
6778 | int insn_type; | |
6779 | unsigned long mach = bfd_get_mach (abfd); | |
6780 | ||
6781 | /* TODO: bset, bclr, btgl, btst. */ | |
6782 | if (__GF (insn, 6, 4) != 0) | |
6783 | return 0; | |
6784 | ||
6785 | switch (N32_IMMU (insn, 6)) | |
6786 | { | |
6787 | case N32_ALU2_MUL: | |
6788 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6789 | && N32_IS_RB3 (insn)) | |
6790 | { | |
6791 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6792 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn)); | |
6793 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6794 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn)); | |
6795 | if (insn16) | |
6796 | insn_type = NDS32_INSN_MUL33; | |
6797 | } | |
6798 | } | |
6799 | ||
6800 | if ((insn16 & 0x8000) == 0) | |
6801 | return 0; | |
6802 | ||
6803 | if (pinsn16) | |
6804 | *pinsn16 = insn16; | |
6805 | if (pinsn_type) | |
6806 | *pinsn_type = insn_type; | |
6807 | return 1; | |
6808 | } | |
6809 | ||
6810 | int | |
6811 | nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
6812 | int *pinsn_type) | |
6813 | { | |
6814 | int op6; | |
6815 | uint16_t insn16 = 0; | |
6816 | int insn_type; | |
6817 | unsigned long mach = bfd_get_mach (abfd); | |
6818 | ||
6819 | /* Decode 32-bit instruction. */ | |
6820 | if (insn & 0x80000000) | |
6821 | { | |
6822 | /* Not 32-bit insn. */ | |
6823 | return 0; | |
6824 | } | |
6825 | ||
6826 | op6 = N32_OP6 (insn); | |
6827 | ||
6828 | /* Convert it to 16-bit instruction. */ | |
6829 | switch (op6) | |
6830 | { | |
6831 | case N32_OP6_MOVI: | |
6832 | if (IS_WITHIN_S (N32_IMM20S (insn), 5)) | |
6833 | { | |
6834 | insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn)); | |
6835 | insn_type = NDS32_INSN_MOVI55; | |
6836 | } | |
6837 | else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16 | |
6838 | && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn)) | |
6839 | { | |
6840 | insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn), | |
6841 | N32_IMM20S (insn) - 16); | |
6842 | insn_type = NDS32_INSN_MOVPI45; | |
6843 | } | |
6844 | break; | |
6845 | ||
6846 | case N32_OP6_ADDI: | |
6847 | if (N32_IMM15S (insn) == 0) | |
6848 | { | |
6849 | /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp', | |
6850 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
6851 | if (mach <= MACH_V2 | |
6852 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
6853 | { | |
6854 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
6855 | insn_type = NDS32_INSN_MOV55; | |
6856 | } | |
6857 | } | |
6858 | else if (N32_IMM15S (insn) > 0) | |
6859 | { | |
6860 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8) | |
6861 | { | |
6862 | insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn), | |
6863 | N32_IMM15S (insn)); | |
6864 | insn_type = NDS32_INSN_ADDI333; | |
6865 | } | |
6866 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
6867 | && N32_IMM15S (insn) < 32) | |
6868 | { | |
6869 | insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn)); | |
6870 | insn_type = NDS32_INSN_ADDI45; | |
6871 | } | |
6872 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
6873 | && N32_RT5 (insn) == N32_RA5 (insn) | |
6874 | && N32_IMM15S (insn) < 512) | |
6875 | { | |
6876 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
6877 | insn_type = NDS32_INSN_ADDI10_SP; | |
6878 | } | |
6879 | else if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
6880 | && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256 | |
6881 | && (N32_IMM15S (insn) % 4 == 0)) | |
6882 | { | |
6883 | insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn), | |
6884 | N32_IMM15S (insn) >> 2); | |
6885 | insn_type = NDS32_INSN_ADDRI36_SP; | |
6886 | } | |
6887 | } | |
6888 | else | |
6889 | { | |
6890 | /* Less than 0. */ | |
6891 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8) | |
6892 | { | |
6893 | insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn), | |
6894 | 0 - N32_IMM15S (insn)); | |
6895 | insn_type = NDS32_INSN_SUBI333; | |
6896 | } | |
6897 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
6898 | && N32_IMM15S (insn) > -32) | |
6899 | { | |
1c8f6a4d KLC |
6900 | insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn), |
6901 | 0 - N32_IMM15S (insn)); | |
35c08157 KLC |
6902 | insn_type = NDS32_INSN_SUBI45; |
6903 | } | |
6904 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
6905 | && N32_RT5 (insn) == N32_RA5 (insn) | |
6906 | && N32_IMM15S (insn) >= -512) | |
6907 | { | |
6908 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
6909 | insn_type = NDS32_INSN_ADDI10_SP; | |
6910 | } | |
6911 | } | |
6912 | break; | |
6913 | ||
6914 | case N32_OP6_ORI: | |
6915 | if (N32_IMM15S (insn) == 0) | |
6916 | { | |
6917 | /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp', | |
6918 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
6919 | if (mach <= MACH_V2 | |
6920 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
6921 | { | |
6922 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
6923 | insn_type = NDS32_INSN_MOV55; | |
6924 | } | |
6925 | } | |
6926 | break; | |
6927 | ||
6928 | case N32_OP6_SUBRI: | |
6929 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
6930 | && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0) | |
6931 | { | |
6932 | insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn)); | |
6933 | insn_type = NDS32_INSN_NEG33; | |
6934 | } | |
6935 | break; | |
6936 | ||
6937 | case N32_OP6_ANDI: | |
6938 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6939 | { | |
6940 | if (N32_IMM15U (insn) == 1) | |
6941 | { | |
6942 | insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn)); | |
6943 | insn_type = NDS32_INSN_XLSB33; | |
6944 | } | |
6945 | else if (N32_IMM15U (insn) == 0x7ff) | |
6946 | { | |
6947 | insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn)); | |
6948 | insn_type = NDS32_INSN_X11B33; | |
6949 | } | |
6950 | else if (N32_IMM15U (insn) == 0xff) | |
6951 | { | |
6952 | insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
6953 | insn_type = NDS32_INSN_ZEB33; | |
6954 | } | |
6955 | else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn) | |
6956 | && N32_IMM15U (insn) < 256) | |
6957 | { | |
6958 | int imm15u = N32_IMM15U (insn); | |
6959 | ||
6960 | if (__builtin_popcount (imm15u) == 1) | |
6961 | { | |
6962 | /* BMSKI33 */ | |
6963 | int imm3u = __builtin_ctz (imm15u); | |
6964 | ||
6965 | insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u); | |
6966 | insn_type = NDS32_INSN_BMSKI33; | |
6967 | } | |
6968 | else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1) | |
6969 | { | |
6970 | /* FEXTI33 */ | |
6971 | int imm3u = __builtin_ctz (imm15u + 1) - 1; | |
6972 | ||
6973 | insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u); | |
6974 | insn_type = NDS32_INSN_FEXTI33; | |
6975 | } | |
6976 | } | |
6977 | } | |
6978 | break; | |
6979 | ||
6980 | case N32_OP6_SLTI: | |
6981 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
6982 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
6983 | { | |
6984 | insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
6985 | insn_type = NDS32_INSN_SLTI45; | |
6986 | } | |
6987 | break; | |
6988 | ||
6989 | case N32_OP6_SLTSI: | |
6990 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
6991 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
6992 | { | |
6993 | insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
6994 | insn_type = NDS32_INSN_SLTSI45; | |
6995 | } | |
6996 | break; | |
6997 | ||
6998 | case N32_OP6_LWI: | |
6999 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7000 | { | |
7001 | insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7002 | insn_type = NDS32_INSN_LWI450; | |
7003 | } | |
7004 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7005 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7006 | { | |
7007 | insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn), | |
7008 | N32_IMM15S (insn)); | |
7009 | insn_type = NDS32_INSN_LWI333; | |
7010 | } | |
7011 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7012 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7013 | { | |
7014 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7015 | insn_type = NDS32_INSN_LWI37; | |
7016 | } | |
7017 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7018 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7019 | { | |
7020 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7021 | insn_type = NDS32_INSN_LWI37_SP; | |
7022 | } | |
7023 | else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8 | |
7024 | && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0) | |
7025 | { | |
1c8f6a4d KLC |
7026 | insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn), |
7027 | N32_IMM15S (insn) + 32); | |
35c08157 KLC |
7028 | insn_type = NDS32_INSN_LWI45_FE; |
7029 | } | |
7030 | break; | |
7031 | ||
7032 | case N32_OP6_SWI: | |
7033 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7034 | { | |
7035 | insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7036 | insn_type = NDS32_INSN_SWI450; | |
7037 | } | |
7038 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7039 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7040 | { | |
1c8f6a4d KLC |
7041 | insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn), |
7042 | N32_IMM15S (insn)); | |
35c08157 KLC |
7043 | insn_type = NDS32_INSN_SWI333; |
7044 | } | |
7045 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7046 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7047 | { | |
7048 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7049 | insn_type = NDS32_INSN_SWI37; | |
7050 | } | |
7051 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7052 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7053 | { | |
7054 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7055 | insn_type = NDS32_INSN_SWI37_SP; | |
7056 | } | |
7057 | break; | |
7058 | ||
7059 | case N32_OP6_LWI_BI: | |
7060 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7061 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7062 | { | |
7063 | insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7064 | N32_IMM15S (insn)); | |
7065 | insn_type = NDS32_INSN_LWI333_BI; | |
7066 | } | |
7067 | break; | |
7068 | ||
7069 | case N32_OP6_SWI_BI: | |
7070 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7071 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7072 | { | |
7073 | insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7074 | N32_IMM15S (insn)); | |
7075 | insn_type = NDS32_INSN_SWI333_BI; | |
7076 | } | |
7077 | break; | |
7078 | ||
7079 | case N32_OP6_LHI: | |
7080 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7081 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7082 | { | |
7083 | insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7084 | N32_IMM15S (insn)); | |
7085 | insn_type = NDS32_INSN_LHI333; | |
7086 | } | |
7087 | break; | |
7088 | ||
7089 | case N32_OP6_SHI: | |
7090 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7091 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7092 | { | |
7093 | insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7094 | N32_IMM15S (insn)); | |
7095 | insn_type = NDS32_INSN_SHI333; | |
7096 | } | |
7097 | break; | |
7098 | ||
7099 | case N32_OP6_LBI: | |
7100 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7101 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7102 | { | |
7103 | insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7104 | N32_IMM15S (insn)); | |
7105 | insn_type = NDS32_INSN_LBI333; | |
7106 | } | |
7107 | break; | |
7108 | ||
7109 | case N32_OP6_SBI: | |
7110 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7111 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7112 | { | |
7113 | insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7114 | N32_IMM15S (insn)); | |
7115 | insn_type = NDS32_INSN_SBI333; | |
7116 | } | |
7117 | break; | |
7118 | ||
7119 | case N32_OP6_ALU1: | |
7120 | return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type); | |
7121 | ||
7122 | case N32_OP6_ALU2: | |
7123 | return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type); | |
7124 | ||
7125 | case N32_OP6_BR1: | |
7126 | if (!IS_WITHIN_S (N32_IMM14S (insn), 8)) | |
7127 | goto done; | |
7128 | ||
4ec521f2 | 7129 | if ((insn & N32_BIT (14)) == 0) |
35c08157 KLC |
7130 | { |
7131 | /* N32_BR1_BEQ */ | |
7132 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7133 | && N32_RT5 (insn) != REG_R5) | |
7134 | insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7135 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7136 | && N32_RA5 (insn) != REG_R5) | |
7137 | insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7138 | insn_type = NDS32_INSN_BEQS38; | |
7139 | break; | |
7140 | } | |
7141 | else | |
7142 | { | |
7143 | /* N32_BR1_BNE */ | |
7144 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7145 | && N32_RT5 (insn) != REG_R5) | |
7146 | insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7147 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7148 | && N32_RA5 (insn) != REG_R5) | |
7149 | insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7150 | insn_type = NDS32_INSN_BNES38; | |
7151 | break; | |
7152 | } | |
7153 | break; | |
7154 | ||
7155 | case N32_OP6_BR2: | |
7156 | switch (N32_BR2_SUB (insn)) | |
7157 | { | |
7158 | case N32_BR2_BEQZ: | |
7159 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7160 | { | |
7161 | insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7162 | insn_type = NDS32_INSN_BEQZ38; | |
7163 | } | |
1c8f6a4d KLC |
7164 | else if (N32_RT5 (insn) == REG_R15 |
7165 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7166 | { |
7167 | insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn)); | |
7168 | insn_type = NDS32_INSN_BEQZS8; | |
7169 | } | |
7170 | break; | |
7171 | ||
7172 | case N32_BR2_BNEZ: | |
7173 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7174 | { | |
7175 | insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7176 | insn_type = NDS32_INSN_BNEZ38; | |
7177 | } | |
1c8f6a4d KLC |
7178 | else if (N32_RT5 (insn) == REG_R15 |
7179 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7180 | { |
7181 | insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn)); | |
7182 | insn_type = NDS32_INSN_BNEZS8; | |
7183 | } | |
7184 | break; | |
7185 | ||
7186 | case N32_BR2_IFCALL: | |
7187 | if (IS_WITHIN_U (N32_IMM16S (insn), 9)) | |
7188 | { | |
7189 | insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn)); | |
7190 | insn_type = NDS32_INSN_IFCALL9; | |
7191 | } | |
7192 | break; | |
7193 | } | |
7194 | break; | |
7195 | ||
7196 | case N32_OP6_JI: | |
4ec521f2 | 7197 | if ((insn & N32_BIT (24)) == 0) |
35c08157 KLC |
7198 | { |
7199 | /* N32_JI_J */ | |
7200 | if (IS_WITHIN_S (N32_IMM24S (insn), 8)) | |
7201 | { | |
7202 | insn16 = N16_TYPE8 (J8, N32_IMM24S (insn)); | |
7203 | insn_type = NDS32_INSN_J8; | |
7204 | } | |
7205 | } | |
7206 | break; | |
7207 | ||
7208 | case N32_OP6_JREG: | |
7209 | if (__GF (insn, 8, 2) != 0) | |
7210 | goto done; | |
7211 | ||
7212 | switch (N32_IMMU (insn, 5)) | |
7213 | { | |
7214 | case N32_JREG_JR: | |
7215 | if (N32_JREG_HINT (insn) == 0) | |
7216 | { | |
7217 | /* jr */ | |
7218 | insn16 = N16_TYPE5 (JR5, N32_RB5 (insn)); | |
7219 | insn_type = NDS32_INSN_JR5; | |
7220 | } | |
7221 | else if (N32_JREG_HINT (insn) == 1) | |
7222 | { | |
7223 | /* ret */ | |
7224 | insn16 = N16_TYPE5 (RET5, N32_RB5 (insn)); | |
7225 | insn_type = NDS32_INSN_RET5; | |
7226 | } | |
7227 | else if (N32_JREG_HINT (insn) == 3) | |
7228 | { | |
7229 | /* ifret = mov55 $sp, $sp */ | |
7230 | insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP); | |
7231 | insn_type = NDS32_INSN_IFRET; | |
7232 | } | |
7233 | break; | |
7234 | ||
7235 | case N32_JREG_JRAL: | |
7236 | /* It's convertible when return rt5 is $lp and address | |
7237 | translation is kept. */ | |
7238 | if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0) | |
7239 | { | |
7240 | insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn)); | |
7241 | insn_type = NDS32_INSN_JRAL5; | |
7242 | } | |
7243 | break; | |
7244 | } | |
7245 | break; | |
7246 | ||
7247 | case N32_OP6_MISC: | |
7248 | if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32) | |
7249 | { | |
7250 | /* For v3, swid above 31 are used for ex9.it. */ | |
7251 | insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn)); | |
7252 | insn_type = NDS32_INSN_BREAK16; | |
7253 | } | |
7254 | break; | |
7255 | ||
7256 | default: | |
7257 | /* This instruction has no 16-bit variant. */ | |
7258 | goto done; | |
7259 | } | |
7260 | ||
7261 | done: | |
7262 | /* Bit-15 of insn16 should be set for a valid instruction. */ | |
7263 | if ((insn16 & 0x8000) == 0) | |
7264 | return 0; | |
7265 | ||
7266 | if (pinsn16) | |
7267 | *pinsn16 = insn16; | |
7268 | if (pinsn_type) | |
7269 | *pinsn_type = insn_type; | |
7270 | return 1; | |
7271 | } | |
7272 | ||
7273 | static int | |
7274 | special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16, | |
7275 | Elf_Internal_Rela *reloc) | |
7276 | { | |
7277 | uint16_t insn16 = 0; | |
7278 | ||
7279 | if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0 | |
7280 | || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16)) | |
7281 | return 0; | |
7282 | ||
7283 | if (!N32_IS_RT3 (insn)) | |
7284 | return 0; | |
7285 | ||
7286 | switch (N32_OP6 (insn)) | |
7287 | { | |
7288 | case N32_OP6_LWI: | |
7289 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7290 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7291 | break; | |
7292 | case N32_OP6_SWI: | |
7293 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7294 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7295 | break; | |
7296 | case N32_OP6_HWGP: | |
7297 | if (!IS_WITHIN_U (N32_IMM17S (insn), 7)) | |
7298 | break; | |
7299 | ||
7300 | if (__GF (insn, 17, 3) == 6) | |
7301 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn)); | |
7302 | else if (__GF (insn, 17, 3) == 7) | |
7303 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn)); | |
7304 | break; | |
7305 | } | |
7306 | ||
7307 | if ((insn16 & 0x8000) == 0) | |
7308 | return 0; | |
7309 | ||
7310 | *pinsn16 = insn16; | |
7311 | return 1; | |
7312 | } | |
7313 | ||
7314 | /* Convert a 16-bit instruction to 32-bit one. | |
7315 | INSN16 it the input and PINSN it the point to output. | |
7316 | Return non-zero on successful. Otherwise 0 is returned. */ | |
7317 | ||
7318 | int | |
7319 | nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn) | |
7320 | { | |
7321 | uint32_t insn = 0xffffffff; | |
7322 | unsigned long mach = bfd_get_mach (abfd); | |
7323 | ||
7324 | /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */ | |
7325 | ||
7326 | switch (__GF (insn16, 9, 6)) | |
7327 | { | |
7328 | case 0x4: /* add45 */ | |
1c8f6a4d KLC |
7329 | insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16), |
7330 | N16_RA5 (insn16)); | |
35c08157 KLC |
7331 | goto done; |
7332 | case 0x5: /* sub45 */ | |
1c8f6a4d KLC |
7333 | insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16), |
7334 | N16_RA5 (insn16)); | |
35c08157 KLC |
7335 | goto done; |
7336 | case 0x6: /* addi45 */ | |
1c8f6a4d KLC |
7337 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7338 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7339 | goto done; |
7340 | case 0x7: /* subi45 */ | |
1c8f6a4d KLC |
7341 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7342 | -N16_IMM5U (insn16)); | |
35c08157 KLC |
7343 | goto done; |
7344 | case 0x8: /* srai45 */ | |
1c8f6a4d KLC |
7345 | insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16), |
7346 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7347 | goto done; |
7348 | case 0x9: /* srli45 */ | |
1c8f6a4d KLC |
7349 | insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16), |
7350 | N16_IMM5U (insn16)); | |
35c08157 | 7351 | goto done; |
35c08157 | 7352 | case 0xa: /* slli333 */ |
1c8f6a4d KLC |
7353 | insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16), |
7354 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7355 | goto done; |
7356 | case 0xc: /* add333 */ | |
1c8f6a4d KLC |
7357 | insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16), |
7358 | N16_RB3 (insn16)); | |
35c08157 KLC |
7359 | goto done; |
7360 | case 0xd: /* sub333 */ | |
1c8f6a4d KLC |
7361 | insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16), |
7362 | N16_RB3 (insn16)); | |
35c08157 KLC |
7363 | goto done; |
7364 | case 0xe: /* addi333 */ | |
1c8f6a4d KLC |
7365 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7366 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7367 | goto done; |
7368 | case 0xf: /* subi333 */ | |
1c8f6a4d KLC |
7369 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7370 | -N16_IMM3U (insn16)); | |
35c08157 | 7371 | goto done; |
35c08157 | 7372 | case 0x10: /* lwi333 */ |
1c8f6a4d KLC |
7373 | insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7374 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7375 | goto done; |
7376 | case 0x12: /* lhi333 */ | |
1c8f6a4d KLC |
7377 | insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7378 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7379 | goto done; |
7380 | case 0x13: /* lbi333 */ | |
1c8f6a4d KLC |
7381 | insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7382 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7383 | goto done; |
7384 | case 0x11: /* lwi333.bi */ | |
1c8f6a4d KLC |
7385 | insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7386 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7387 | goto done; |
7388 | case 0x14: /* swi333 */ | |
1c8f6a4d KLC |
7389 | insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7390 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7391 | goto done; |
7392 | case 0x16: /* shi333 */ | |
1c8f6a4d KLC |
7393 | insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7394 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7395 | goto done; |
7396 | case 0x17: /* sbi333 */ | |
1c8f6a4d KLC |
7397 | insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7398 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7399 | goto done; |
7400 | case 0x15: /* swi333.bi */ | |
1c8f6a4d KLC |
7401 | insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7402 | N16_IMM3U (insn16)); | |
35c08157 | 7403 | goto done; |
35c08157 | 7404 | case 0x18: /* addri36.sp */ |
1c8f6a4d KLC |
7405 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP, |
7406 | N16_IMM6U (insn16) << 2); | |
35c08157 | 7407 | goto done; |
35c08157 | 7408 | case 0x19: /* lwi45.fe */ |
1c8f6a4d KLC |
7409 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8, |
7410 | (N16_IMM5U (insn16) - 32)); | |
35c08157 KLC |
7411 | goto done; |
7412 | case 0x1a: /* lwi450 */ | |
7413 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7414 | goto done; | |
7415 | case 0x1b: /* swi450 */ | |
7416 | insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7417 | goto done; | |
7418 | ||
1c8f6a4d | 7419 | /* These are r15 implied instructions. */ |
35c08157 KLC |
7420 | case 0x30: /* slts45 */ |
7421 | insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7422 | goto done; | |
7423 | case 0x31: /* slt45 */ | |
7424 | insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7425 | goto done; | |
7426 | case 0x32: /* sltsi45 */ | |
7427 | insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7428 | goto done; | |
7429 | case 0x33: /* slti45 */ | |
7430 | insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7431 | goto done; | |
7432 | case 0x34: /* beqzs8, bnezs8 */ | |
4ec521f2 | 7433 | if (insn16 & N32_BIT (8)) |
35c08157 KLC |
7434 | insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16)); |
7435 | else | |
7436 | insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16)); | |
7437 | goto done; | |
7438 | ||
7439 | case 0x35: /* break16, ex9.it */ | |
7440 | /* Only consider range of v3 break16. */ | |
7441 | insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK); | |
7442 | goto done; | |
7443 | ||
7444 | case 0x3c: /* ifcall9 */ | |
7445 | insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16)); | |
7446 | goto done; | |
7447 | case 0x3d: /* movpi45 */ | |
7448 | insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16); | |
7449 | goto done; | |
7450 | ||
7451 | case 0x3f: /* MISC33 */ | |
1c8f6a4d | 7452 | switch (insn16 & 0x7) |
35c08157 KLC |
7453 | { |
7454 | case 2: /* neg33 */ | |
7455 | insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7456 | break; | |
7457 | case 3: /* not33 */ | |
1c8f6a4d KLC |
7458 | insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16), |
7459 | N16_RA3 (insn16)); | |
35c08157 KLC |
7460 | break; |
7461 | case 4: /* mul33 */ | |
1c8f6a4d KLC |
7462 | insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16), |
7463 | N16_RA3 (insn16)); | |
35c08157 KLC |
7464 | break; |
7465 | case 5: /* xor33 */ | |
1c8f6a4d KLC |
7466 | insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16), |
7467 | N16_RA3 (insn16)); | |
35c08157 KLC |
7468 | break; |
7469 | case 6: /* and33 */ | |
1c8f6a4d KLC |
7470 | insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16), |
7471 | N16_RA3 (insn16)); | |
35c08157 KLC |
7472 | break; |
7473 | case 7: /* or33 */ | |
1c8f6a4d KLC |
7474 | insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16), |
7475 | N16_RA3 (insn16)); | |
35c08157 KLC |
7476 | break; |
7477 | } | |
7478 | goto done; | |
7479 | ||
1c8f6a4d | 7480 | case 0xb: |
35c08157 KLC |
7481 | switch (insn16 & 0x7) |
7482 | { | |
7483 | case 0: /* zeb33 */ | |
7484 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff); | |
7485 | break; | |
7486 | case 1: /* zeh33 */ | |
7487 | insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7488 | break; | |
7489 | case 2: /* seb33 */ | |
7490 | insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7491 | break; | |
7492 | case 3: /* seh33 */ | |
7493 | insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7494 | break; | |
7495 | case 4: /* xlsb33 */ | |
7496 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1); | |
7497 | break; | |
7498 | case 5: /* x11b33 */ | |
7499 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff); | |
7500 | break; | |
7501 | case 6: /* bmski33 */ | |
7502 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7503 | 1 << __GF (insn16, 3, 3)); |
35c08157 KLC |
7504 | break; |
7505 | case 7: /* fexti33 */ | |
7506 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7507 | (1 << (__GF (insn16, 3, 3) + 1)) - 1); |
35c08157 KLC |
7508 | break; |
7509 | } | |
7510 | goto done; | |
7511 | } | |
7512 | ||
7513 | switch (__GF (insn16, 10, 5)) | |
7514 | { | |
7515 | case 0x0: /* mov55 or ifret16 */ | |
7516 | if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP | |
7517 | && N16_RT5 (insn16) == N16_RA5 (insn16)) | |
1c8f6a4d | 7518 | insn = N32_JREG (JR, 0, 0, 0, 3); |
35c08157 | 7519 | else |
1c8f6a4d | 7520 | insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0); |
35c08157 KLC |
7521 | goto done; |
7522 | case 0x1: /* movi55 */ | |
7523 | insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16)); | |
7524 | goto done; | |
7525 | case 0x1b: /* addi10s (V2) */ | |
7526 | insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16)); | |
7527 | goto done; | |
7528 | } | |
7529 | ||
7530 | switch (__GF (insn16, 11, 4)) | |
7531 | { | |
7532 | case 0x7: /* lwi37.fp/swi37.fp */ | |
4ec521f2 | 7533 | if (insn16 & N32_BIT (7)) /* swi37.fp */ |
35c08157 KLC |
7534 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); |
7535 | else /* lwi37.fp */ | |
7536 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); | |
7537 | goto done; | |
7538 | case 0x8: /* beqz38 */ | |
7539 | insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7540 | goto done; | |
7541 | case 0x9: /* bnez38 */ | |
7542 | insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7543 | goto done; | |
7544 | case 0xa: /* beqs38/j8, implied r5 */ | |
7545 | if (N16_RT38 (insn16) == 5) | |
7546 | insn = N32_JI (J, N16_IMM8S (insn16)); | |
7547 | else | |
7548 | insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7549 | goto done; | |
7550 | case 0xb: /* bnes38 and others */ | |
7551 | if (N16_RT38 (insn16) == 5) | |
7552 | { | |
7553 | switch (__GF (insn16, 5, 3)) | |
7554 | { | |
7555 | case 0: /* jr5 */ | |
7556 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0); | |
7557 | break; | |
7558 | case 4: /* ret5 */ | |
7559 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1); | |
7560 | break; | |
7561 | case 1: /* jral5 */ | |
7562 | insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0); | |
7563 | break; | |
7564 | case 2: /* ex9.it imm5 */ | |
7565 | /* ex9.it had no 32-bit variantl. */ | |
7566 | break; | |
7567 | case 5: /* add5.pc */ | |
7568 | /* add5.pc had no 32-bit variantl. */ | |
7569 | break; | |
7570 | } | |
7571 | } | |
7572 | else /* bnes38 */ | |
7573 | insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7574 | goto done; | |
7575 | case 0xe: /* lwi37/swi37 */ | |
7576 | if (insn16 & (1 << 7)) /* swi37.sp */ | |
7577 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7578 | else /* lwi37.sp */ | |
7579 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7580 | goto done; | |
7581 | } | |
7582 | ||
7583 | done: | |
7584 | if (insn & 0x80000000) | |
7585 | return 0; | |
7586 | ||
7587 | if (pinsn) | |
7588 | *pinsn = insn; | |
7589 | return 1; | |
7590 | } | |
7591 | \f | |
7592 | static bfd_boolean | |
7593 | is_sda_access_insn (unsigned long insn) | |
7594 | { | |
7595 | switch (N32_OP6 (insn)) | |
7596 | { | |
7597 | case N32_OP6_LWI: | |
7598 | case N32_OP6_LHI: | |
7599 | case N32_OP6_LHSI: | |
7600 | case N32_OP6_LBI: | |
7601 | case N32_OP6_LBSI: | |
7602 | case N32_OP6_SWI: | |
7603 | case N32_OP6_SHI: | |
7604 | case N32_OP6_SBI: | |
7605 | case N32_OP6_LWC: | |
7606 | case N32_OP6_LDC: | |
7607 | case N32_OP6_SWC: | |
7608 | case N32_OP6_SDC: | |
7609 | return TRUE; | |
7610 | default: | |
7611 | ; | |
7612 | } | |
7613 | return FALSE; | |
7614 | } | |
7615 | ||
7616 | static unsigned long | |
7617 | turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn) | |
7618 | { | |
7619 | uint32_t oinsn = 0; | |
7620 | ||
7621 | switch (type) | |
7622 | { | |
7623 | case R_NDS32_GOT_LO12: | |
7624 | case R_NDS32_GOTOFF_LO12: | |
7625 | case R_NDS32_PLTREL_LO12: | |
7626 | case R_NDS32_PLT_GOTREL_LO12: | |
7627 | case R_NDS32_LO12S0_RELA: | |
7628 | switch (N32_OP6 (insn)) | |
7629 | { | |
7630 | case N32_OP6_LBI: | |
7631 | /* lbi.gp */ | |
7632 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
7633 | break; | |
7634 | case N32_OP6_LBSI: | |
7635 | /* lbsi.gp */ | |
4ec521f2 | 7636 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), N32_BIT (19)); |
35c08157 KLC |
7637 | break; |
7638 | case N32_OP6_SBI: | |
7639 | /* sbi.gp */ | |
7640 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
7641 | break; | |
7642 | case N32_OP6_ORI: | |
7643 | /* addi.gp */ | |
4ec521f2 | 7644 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19)); |
35c08157 KLC |
7645 | break; |
7646 | } | |
7647 | break; | |
7648 | ||
7649 | case R_NDS32_LO12S1_RELA: | |
7650 | switch (N32_OP6 (insn)) | |
7651 | { | |
7652 | case N32_OP6_LHI: | |
7653 | /* lhi.gp */ | |
7654 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
7655 | break; | |
7656 | case N32_OP6_LHSI: | |
7657 | /* lhsi.gp */ | |
4ec521f2 | 7658 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (18)); |
35c08157 KLC |
7659 | break; |
7660 | case N32_OP6_SHI: | |
7661 | /* shi.gp */ | |
4ec521f2 | 7662 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (19)); |
35c08157 KLC |
7663 | break; |
7664 | } | |
7665 | break; | |
7666 | ||
7667 | case R_NDS32_LO12S2_RELA: | |
7668 | switch (N32_OP6 (insn)) | |
7669 | { | |
7670 | case N32_OP6_LWI: | |
7671 | /* lwi.gp */ | |
7672 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
7673 | break; | |
7674 | case N32_OP6_SWI: | |
7675 | /* swi.gp */ | |
7676 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
7677 | break; | |
7678 | } | |
7679 | break; | |
7680 | ||
7681 | case R_NDS32_LO12S2_DP_RELA: | |
7682 | case R_NDS32_LO12S2_SP_RELA: | |
7683 | oinsn = (insn & 0x7ff07000) | (REG_GP << 15); | |
7684 | break; | |
7685 | } | |
7686 | ||
7687 | if (oinsn) | |
7688 | *pinsn = oinsn; | |
7689 | ||
7690 | return oinsn != 0; | |
7691 | } | |
7692 | ||
7693 | /* Linker hasn't found the correct merge section for non-section symbol | |
7694 | in relax time, this work is left to the function elf_link_input_bfd(). | |
7695 | So for non-section symbol, _bfd_merged_section_offset is also needed | |
7696 | to find the correct symbol address. */ | |
7697 | ||
7698 | static bfd_vma | |
7699 | nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym, | |
7700 | asection **psec, Elf_Internal_Rela *rel) | |
7701 | { | |
7702 | asection *sec = *psec; | |
7703 | bfd_vma relocation; | |
7704 | ||
7705 | relocation = (sec->output_section->vma | |
7706 | + sec->output_offset + sym->st_value); | |
7707 | if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7708 | { | |
7709 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
7710 | rel->r_addend = | |
7711 | _bfd_merged_section_offset (abfd, psec, | |
7712 | elf_section_data (sec)->sec_info, | |
7713 | sym->st_value + rel->r_addend); | |
7714 | else | |
7715 | rel->r_addend = | |
7716 | _bfd_merged_section_offset (abfd, psec, | |
7717 | elf_section_data (sec)->sec_info, | |
7718 | sym->st_value) + rel->r_addend; | |
7719 | ||
7720 | if (sec != *psec) | |
7721 | { | |
7722 | /* If we have changed the section, and our original section is | |
7723 | marked with SEC_EXCLUDE, it means that the original | |
7724 | SEC_MERGE section has been completely subsumed in some | |
7725 | other SEC_MERGE section. In this case, we need to leave | |
7726 | some info around for --emit-relocs. */ | |
7727 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7728 | sec->kept_section = *psec; | |
7729 | sec = *psec; | |
7730 | } | |
7731 | rel->r_addend -= relocation; | |
7732 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
7733 | } | |
7734 | return relocation; | |
7735 | } | |
7736 | ||
7737 | static bfd_vma | |
7738 | calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel, | |
7739 | Elf_Internal_Sym *isymbuf, | |
7740 | Elf_Internal_Shdr *symtab_hdr) | |
7741 | { | |
7742 | bfd_signed_vma foff; | |
7743 | bfd_vma symval, addend; | |
7744 | Elf_Internal_Rela irel_fn; | |
7745 | Elf_Internal_Sym *isym; | |
7746 | asection *sym_sec; | |
7747 | ||
7748 | /* Get the value of the symbol referred to by the reloc. */ | |
7749 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
7750 | { | |
7751 | /* A local symbol. */ | |
7752 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
7753 | ||
7754 | if (isym->st_shndx == SHN_UNDEF) | |
7755 | sym_sec = bfd_und_section_ptr; | |
7756 | else if (isym->st_shndx == SHN_ABS) | |
7757 | sym_sec = bfd_abs_section_ptr; | |
7758 | else if (isym->st_shndx == SHN_COMMON) | |
7759 | sym_sec = bfd_com_section_ptr; | |
7760 | else | |
7761 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
7762 | memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela)); | |
7763 | symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn); | |
7764 | addend = irel_fn.r_addend; | |
7765 | } | |
7766 | else | |
7767 | { | |
7768 | unsigned long indx; | |
7769 | struct elf_link_hash_entry *h; | |
7770 | ||
7771 | /* An external symbol. */ | |
7772 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
7773 | h = elf_sym_hashes (abfd)[indx]; | |
7774 | BFD_ASSERT (h != NULL); | |
7775 | ||
7776 | while (h->root.type == bfd_link_hash_indirect | |
7777 | || h->root.type == bfd_link_hash_warning) | |
7778 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7779 | ||
7780 | if (h->root.type != bfd_link_hash_defined | |
7781 | && h->root.type != bfd_link_hash_defweak) | |
7782 | /* This appears to be a reference to an undefined | |
7783 | symbol. Just ignore it--it will be caught by the | |
7784 | regular reloc processing. */ | |
7785 | return 0; | |
7786 | ||
7787 | if (h->root.u.def.section->flags & SEC_MERGE) | |
7788 | { | |
7789 | sym_sec = h->root.u.def.section; | |
7790 | symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data | |
7791 | (sym_sec)->sec_info, h->root.u.def.value); | |
7792 | symval = symval + sym_sec->output_section->vma | |
7793 | + sym_sec->output_offset; | |
7794 | } | |
7795 | else | |
7796 | symval = (h->root.u.def.value | |
7797 | + h->root.u.def.section->output_section->vma | |
7798 | + h->root.u.def.section->output_offset); | |
7799 | addend = irel->r_addend; | |
7800 | } | |
7801 | ||
7802 | foff = symval + addend; | |
7803 | ||
7804 | return foff; | |
7805 | } | |
7806 | ||
7807 | static bfd_vma | |
7808 | calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
7809 | Elf_Internal_Rela *irel, | |
7810 | Elf_Internal_Shdr *symtab_hdr) | |
7811 | { | |
7812 | int symndx; | |
7813 | bfd_vma *local_got_offsets; | |
7814 | /* Get the value of the symbol referred to by the reloc. */ | |
7815 | struct elf_link_hash_entry *h; | |
7816 | struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info); | |
7817 | ||
7818 | /* An external symbol. */ | |
7819 | symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
7820 | h = elf_sym_hashes (abfd)[symndx]; | |
7821 | while (h->root.type == bfd_link_hash_indirect | |
7822 | || h->root.type == bfd_link_hash_warning) | |
7823 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
7824 | ||
7825 | if (symndx >= 0) | |
7826 | { | |
7827 | BFD_ASSERT (h != NULL); | |
ce558b89 AM |
7828 | return (htab->root.sgot->output_section->vma |
7829 | + htab->root.sgot->output_offset | |
7830 | + h->got.offset); | |
35c08157 KLC |
7831 | } |
7832 | else | |
7833 | { | |
7834 | local_got_offsets = elf_local_got_offsets (abfd); | |
7835 | BFD_ASSERT (local_got_offsets != NULL); | |
ce558b89 AM |
7836 | return (htab->root.sgot->output_section->vma |
7837 | + htab->root.sgot->output_offset | |
7838 | + local_got_offsets[ELF32_R_SYM (irel->r_info)]); | |
35c08157 KLC |
7839 | } |
7840 | ||
7841 | /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */ | |
7842 | /* The check of h->root.type is passed. */ | |
7843 | } | |
7844 | ||
7845 | static int | |
7846 | is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED, | |
7847 | asection *sec, Elf_Internal_Rela *rel) | |
7848 | { | |
7849 | bfd_byte *contents; | |
7850 | unsigned short insn16; | |
7851 | ||
7852 | if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG)) | |
7853 | return FALSE; | |
7854 | contents = elf_section_data (sec)->this_hdr.contents; | |
7855 | insn16 = bfd_getb16 (contents + rel->r_offset); | |
7856 | if (insn16 == NDS32_NOP16) | |
7857 | return TRUE; | |
7858 | return FALSE; | |
7859 | } | |
7860 | ||
7861 | /* It checks whether the instruction could be converted to | |
7862 | 16-bit form and returns the converted one. | |
7863 | ||
7864 | `internal_relocs' is supposed to be sorted. */ | |
7865 | ||
7866 | static int | |
7867 | is_convert_32_to_16 (bfd *abfd, asection *sec, | |
7868 | Elf_Internal_Rela *reloc, | |
7869 | Elf_Internal_Rela *internal_relocs, | |
7870 | Elf_Internal_Rela *irelend, | |
7871 | uint16_t *insn16) | |
7872 | { | |
7873 | #define NORMAL_32_TO_16 (1 << 0) | |
7874 | #define SPECIAL_32_TO_16 (1 << 1) | |
7875 | bfd_byte *contents = NULL; | |
7876 | bfd_signed_vma off; | |
7877 | bfd_vma mem_addr; | |
7878 | uint32_t insn = 0; | |
7879 | Elf_Internal_Rela *pc_rel; | |
7880 | int pic_ext_target = 0; | |
7881 | Elf_Internal_Shdr *symtab_hdr; | |
7882 | Elf_Internal_Sym *isymbuf = NULL; | |
7883 | int convert_type; | |
7884 | bfd_vma offset; | |
7885 | ||
7886 | if (reloc->r_offset + 4 > sec->size) | |
7887 | return FALSE; | |
7888 | ||
7889 | offset = reloc->r_offset; | |
7890 | ||
0c4bd9d9 | 7891 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
35c08157 KLC |
7892 | return FALSE; |
7893 | insn = bfd_getb32 (contents + offset); | |
7894 | ||
7895 | if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL)) | |
7896 | convert_type = NORMAL_32_TO_16; | |
7897 | else if (special_convert_32_to_16 (insn, insn16, reloc)) | |
7898 | convert_type = SPECIAL_32_TO_16; | |
7899 | else | |
7900 | return FALSE; | |
7901 | ||
7902 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
7903 | if (!nds32_get_local_syms (abfd, sec, &isymbuf)) | |
7904 | return FALSE; | |
7905 | ||
7906 | /* Find the first relocation of the same relocation-type, | |
7907 | so we iteratie them forward. */ | |
7908 | pc_rel = reloc; | |
1c8f6a4d | 7909 | while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset) |
35c08157 KLC |
7910 | pc_rel--; |
7911 | ||
7912 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
7913 | { | |
7914 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
7915 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
7916 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA | |
7917 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
7918 | { | |
7919 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
7920 | &pic_ext_target); | |
1c8f6a4d KLC |
7921 | if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1 |
7922 | || off == 0) | |
35c08157 KLC |
7923 | return FALSE; |
7924 | break; | |
7925 | } | |
7926 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
7927 | { | |
7928 | /* movi => movi55 */ | |
1c8f6a4d KLC |
7929 | mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf, |
7930 | symtab_hdr); | |
7931 | /* mem_addr is unsigned, but the value should | |
7932 | be between [-16, 15]. */ | |
35c08157 KLC |
7933 | if ((mem_addr + 0x10) >> 5) |
7934 | return FALSE; | |
7935 | break; | |
7936 | } | |
1c8f6a4d KLC |
7937 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20) |
7938 | || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12)) | |
7939 | { | |
7940 | /* It never happen movi to movi55 for R_NDS32_TLS_LE_20, | |
7941 | because it can be relaxed to addi for TLS_LE_ADD. */ | |
7942 | return FALSE; | |
7943 | } | |
35c08157 KLC |
7944 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA |
7945 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
7946 | && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) | |
7947 | && convert_type == SPECIAL_32_TO_16) | |
7948 | { | |
7949 | /* fp-as-gp | |
7950 | We've selected a best fp-base for this access, so we can | |
7951 | always resolve it anyway. Do nothing. */ | |
7952 | break; | |
7953 | } | |
7954 | else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE | |
7955 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT)) | |
7956 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY) | |
7957 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16)) | |
7958 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE) | |
7959 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA))) | |
7960 | { | |
1c8f6a4d KLC |
7961 | /* Prevent unresolved addi instruction translate |
7962 | to addi45 or addi333. */ | |
35c08157 KLC |
7963 | return FALSE; |
7964 | } | |
1c8f6a4d KLC |
7965 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
7966 | { | |
7967 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
7968 | &pic_ext_target); | |
7969 | if (off >= ACCURATE_U9BIT_S1 || off <= 0) | |
7970 | return FALSE; | |
7971 | break; | |
7972 | } | |
35c08157 KLC |
7973 | } |
7974 | ||
7975 | return TRUE; | |
7976 | } | |
7977 | ||
7978 | static void | |
7979 | nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents, | |
7980 | Elf_Internal_Rela *reloc, | |
7981 | Elf_Internal_Rela *internal_relocs, | |
7982 | Elf_Internal_Rela *irelend, | |
7983 | unsigned short insn16) | |
7984 | { | |
7985 | Elf_Internal_Rela *pc_rel; | |
7986 | bfd_vma offset; | |
7987 | ||
7988 | offset = reloc->r_offset; | |
7989 | bfd_putb16 (insn16, contents + offset); | |
7990 | /* Find the first relocation of the same relocation-type, | |
7991 | so we iteratie them forward. */ | |
7992 | pc_rel = reloc; | |
7993 | while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset) | |
7994 | pc_rel--; | |
7995 | ||
7996 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
7997 | { | |
7998 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
7999 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
8000 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA) | |
8001 | { | |
8002 | pc_rel->r_info = | |
8003 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA); | |
8004 | } | |
8005 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
8006 | pc_rel->r_info = | |
8007 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL); | |
8008 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
8009 | pc_rel->r_info = | |
8010 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA); | |
8011 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA | |
8012 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
8013 | pc_rel->r_info = | |
8014 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA); | |
1c8f6a4d KLC |
8015 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
8016 | pc_rel->r_info = | |
8017 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
8018 | } |
8019 | } | |
8020 | ||
8021 | /* Find a relocation of type specified by `reloc_type' | |
8022 | of the same r_offset with reloc. | |
8023 | If not found, return irelend. | |
8024 | ||
8025 | Assuming relocations are sorted by r_offset, | |
8026 | we find the relocation from `reloc' backward untill relocs, | |
8027 | or find it from `reloc' forward untill irelend. */ | |
8028 | ||
8029 | static Elf_Internal_Rela * | |
8030 | find_relocs_at_address (Elf_Internal_Rela *reloc, | |
8031 | Elf_Internal_Rela *relocs, | |
8032 | Elf_Internal_Rela *irelend, | |
8033 | enum elf_nds32_reloc_type reloc_type) | |
8034 | { | |
8035 | Elf_Internal_Rela *rel_t; | |
8036 | ||
8037 | /* Find backward. */ | |
8038 | for (rel_t = reloc; | |
8039 | rel_t >= relocs && rel_t->r_offset == reloc->r_offset; | |
8040 | rel_t--) | |
8041 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8042 | return rel_t; | |
8043 | ||
1c8f6a4d | 8044 | /* We didn't find it backward. Try find it forward. */ |
35c08157 KLC |
8045 | for (rel_t = reloc; |
8046 | rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8047 | rel_t++) | |
8048 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8049 | return rel_t; | |
8050 | ||
8051 | return irelend; | |
8052 | } | |
8053 | ||
8054 | /* Find a relocation of specified type and offset. | |
8055 | `reloc' is just a refence point to find a relocation at specified offset. | |
8056 | If not found, return irelend. | |
8057 | ||
8058 | Assuming relocations are sorted by r_offset, | |
8059 | we find the relocation from `reloc' backward untill relocs, | |
8060 | or find it from `reloc' forward untill irelend. */ | |
8061 | ||
8062 | static Elf_Internal_Rela * | |
8063 | find_relocs_at_address_addr (Elf_Internal_Rela *reloc, | |
8064 | Elf_Internal_Rela *relocs, | |
8065 | Elf_Internal_Rela *irelend, | |
6cae483a | 8066 | enum elf_nds32_reloc_type reloc_type, |
35c08157 KLC |
8067 | bfd_vma offset_p) |
8068 | { | |
8069 | Elf_Internal_Rela *rel_t = NULL; | |
8070 | ||
8071 | /* First, we try to find a relocation of offset `offset_p', | |
8072 | and then we use find_relocs_at_address to find specific type. */ | |
8073 | ||
8074 | if (reloc->r_offset > offset_p) | |
8075 | { | |
8076 | /* Find backward. */ | |
8077 | for (rel_t = reloc; | |
8078 | rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--) | |
8079 | /* Do nothing. */; | |
8080 | } | |
8081 | else if (reloc->r_offset < offset_p) | |
8082 | { | |
8083 | /* Find forward. */ | |
8084 | for (rel_t = reloc; | |
8085 | rel_t < irelend && rel_t->r_offset < offset_p; rel_t++) | |
8086 | /* Do nothing. */; | |
8087 | } | |
8088 | else | |
8089 | rel_t = reloc; | |
8090 | ||
8091 | /* Not found? */ | |
8092 | if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p) | |
8093 | return irelend; | |
8094 | ||
8095 | return find_relocs_at_address (rel_t, relocs, irelend, reloc_type); | |
8096 | } | |
8097 | ||
8098 | static bfd_boolean | |
8099 | nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc, | |
8100 | Elf_Internal_Rela *internal_relocs, | |
8101 | Elf_Internal_Rela *irelend, | |
8102 | unsigned char reloc_type) | |
8103 | { | |
8104 | Elf_Internal_Rela *rel_t; | |
8105 | ||
8106 | for (rel_t = reloc; | |
8107 | rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset; | |
8108 | rel_t--) | |
8109 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8110 | { | |
8111 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8112 | && rel_t->r_addend == reloc->r_addend) | |
8113 | continue; | |
8114 | return TRUE; | |
8115 | } | |
8116 | ||
8117 | for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8118 | rel_t++) | |
8119 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8120 | { | |
8121 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8122 | && rel_t->r_addend == reloc->r_addend) | |
8123 | continue; | |
8124 | return TRUE; | |
8125 | } | |
8126 | ||
8127 | return FALSE; | |
8128 | } | |
8129 | ||
8130 | typedef struct nds32_elf_blank nds32_elf_blank_t; | |
8131 | struct nds32_elf_blank | |
8132 | { | |
8133 | /* Where the blank begins. */ | |
8134 | bfd_vma offset; | |
8135 | /* The size of the blank. */ | |
8136 | bfd_vma size; | |
8137 | /* The accumulative size before this blank. */ | |
8138 | bfd_vma total_size; | |
8139 | nds32_elf_blank_t *next; | |
8140 | nds32_elf_blank_t *prev; | |
8141 | }; | |
8142 | ||
8143 | static nds32_elf_blank_t *blank_free_list = NULL; | |
8144 | ||
8145 | static nds32_elf_blank_t * | |
8146 | create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p) | |
8147 | { | |
8148 | nds32_elf_blank_t *blank_t; | |
8149 | ||
8150 | if (blank_free_list) | |
8151 | { | |
8152 | blank_t = blank_free_list; | |
8153 | blank_free_list = blank_free_list->next; | |
8154 | } | |
8155 | else | |
8156 | blank_t = bfd_malloc (sizeof (nds32_elf_blank_t)); | |
8157 | ||
8158 | if (blank_t == NULL) | |
8159 | return NULL; | |
8160 | ||
8161 | blank_t->offset = offset_p; | |
8162 | blank_t->size = size_p; | |
8163 | blank_t->total_size = 0; | |
8164 | blank_t->next = NULL; | |
8165 | blank_t->prev = NULL; | |
8166 | ||
8167 | return blank_t; | |
8168 | } | |
8169 | ||
8170 | static void | |
8171 | remove_nds32_elf_blank (nds32_elf_blank_t *blank_p) | |
8172 | { | |
8173 | if (blank_free_list) | |
8174 | { | |
8175 | blank_free_list->prev = blank_p; | |
8176 | blank_p->next = blank_free_list; | |
8177 | } | |
8178 | else | |
8179 | blank_p->next = NULL; | |
8180 | ||
8181 | blank_p->prev = NULL; | |
8182 | blank_free_list = blank_p; | |
8183 | } | |
8184 | ||
8185 | static void | |
8186 | clean_nds32_elf_blank (void) | |
8187 | { | |
8188 | nds32_elf_blank_t *blank_t; | |
8189 | ||
8190 | while (blank_free_list) | |
8191 | { | |
8192 | blank_t = blank_free_list; | |
8193 | blank_free_list = blank_free_list->next; | |
8194 | free (blank_t); | |
8195 | } | |
8196 | } | |
8197 | ||
8198 | static nds32_elf_blank_t * | |
8199 | search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr) | |
8200 | { | |
8201 | nds32_elf_blank_t *blank_t; | |
8202 | ||
8203 | if (!blank_p) | |
8204 | return NULL; | |
8205 | blank_t = blank_p; | |
8206 | ||
8207 | while (blank_t && addr < blank_t->offset) | |
8208 | blank_t = blank_t->prev; | |
8209 | while (blank_t && blank_t->next && addr >= blank_t->next->offset) | |
8210 | blank_t = blank_t->next; | |
8211 | ||
8212 | return blank_t; | |
8213 | } | |
8214 | ||
8215 | static bfd_vma | |
8216 | get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8217 | int overwrite) | |
8218 | { | |
8219 | nds32_elf_blank_t *blank_t; | |
8220 | ||
8221 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8222 | if (!blank_t) | |
8223 | return 0; | |
8224 | ||
8225 | if (overwrite) | |
8226 | *blank_p = blank_t; | |
8227 | ||
8228 | if (addr < blank_t->offset + blank_t->size) | |
8229 | return blank_t->total_size + (addr - blank_t->offset); | |
8230 | else | |
8231 | return blank_t->total_size + blank_t->size; | |
8232 | } | |
8233 | ||
8234 | static bfd_boolean | |
8235 | insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len) | |
8236 | { | |
8237 | nds32_elf_blank_t *blank_t, *blank_t2; | |
8238 | ||
8239 | if (!*blank_p) | |
8240 | { | |
8241 | *blank_p = create_nds32_elf_blank (addr, len); | |
8242 | return *blank_p ? TRUE : FALSE; | |
8243 | } | |
8244 | ||
8245 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8246 | ||
8247 | if (blank_t == NULL) | |
8248 | { | |
8249 | blank_t = create_nds32_elf_blank (addr, len); | |
8250 | if (!blank_t) | |
8251 | return FALSE; | |
8252 | while ((*blank_p)->prev != NULL) | |
8253 | *blank_p = (*blank_p)->prev; | |
8254 | blank_t->next = *blank_p; | |
8255 | (*blank_p)->prev = blank_t; | |
8256 | (*blank_p) = blank_t; | |
8257 | return TRUE; | |
8258 | } | |
8259 | ||
8260 | if (addr < blank_t->offset + blank_t->size) | |
8261 | { | |
8262 | if (addr > blank_t->offset + blank_t->size) | |
8263 | blank_t->size = addr - blank_t->offset; | |
8264 | } | |
8265 | else | |
8266 | { | |
8267 | blank_t2 = create_nds32_elf_blank (addr, len); | |
8268 | if (!blank_t2) | |
8269 | return FALSE; | |
8270 | if (blank_t->next) | |
8271 | { | |
8272 | blank_t->next->prev = blank_t2; | |
8273 | blank_t2->next = blank_t->next; | |
8274 | } | |
8275 | blank_t2->prev = blank_t; | |
8276 | blank_t->next = blank_t2; | |
8277 | *blank_p = blank_t2; | |
8278 | } | |
8279 | ||
8280 | return TRUE; | |
8281 | } | |
8282 | ||
8283 | static bfd_boolean | |
8284 | insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8285 | bfd_vma len) | |
8286 | { | |
8287 | nds32_elf_blank_t *blank_t; | |
8288 | ||
8289 | if (!insert_nds32_elf_blank (blank_p, addr, len)) | |
8290 | return FALSE; | |
8291 | ||
8292 | blank_t = *blank_p; | |
8293 | ||
8294 | if (!blank_t->prev) | |
8295 | { | |
8296 | blank_t->total_size = 0; | |
8297 | blank_t = blank_t->next; | |
8298 | } | |
8299 | ||
8300 | while (blank_t) | |
8301 | { | |
8302 | blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size; | |
8303 | blank_t = blank_t->next; | |
8304 | } | |
8305 | ||
8306 | return TRUE; | |
8307 | } | |
8308 | ||
8309 | static void | |
8310 | calc_nds32_blank_total (nds32_elf_blank_t *blank_p) | |
8311 | { | |
8312 | nds32_elf_blank_t *blank_t; | |
8313 | bfd_vma total_size = 0; | |
8314 | ||
8315 | if (!blank_p) | |
8316 | return; | |
8317 | ||
8318 | blank_t = blank_p; | |
8319 | while (blank_t->prev) | |
8320 | blank_t = blank_t->prev; | |
8321 | while (blank_t) | |
8322 | { | |
8323 | blank_t->total_size = total_size; | |
8324 | total_size += blank_t->size; | |
8325 | blank_t = blank_t->next; | |
8326 | } | |
8327 | } | |
8328 | ||
8329 | static bfd_boolean | |
8330 | nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec, | |
8331 | nds32_elf_blank_t *blank_p) | |
8332 | { | |
8333 | Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */ | |
1c8f6a4d | 8334 | Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */ |
35c08157 KLC |
8335 | Elf_Internal_Sym *isymend; /* Symbol entry iterator. */ |
8336 | unsigned int sec_shndx; /* The section the be relaxed. */ | |
8337 | bfd_byte *contents; /* Contents data of iterating section. */ | |
8338 | Elf_Internal_Rela *internal_relocs; | |
8339 | Elf_Internal_Rela *irel; | |
8340 | Elf_Internal_Rela *irelend; | |
8341 | struct elf_link_hash_entry **sym_hashes; | |
8342 | struct elf_link_hash_entry **end_hashes; | |
8343 | unsigned int symcount; | |
8344 | asection *sect; | |
8345 | nds32_elf_blank_t *blank_t; | |
8346 | nds32_elf_blank_t *blank_t2; | |
8347 | nds32_elf_blank_t *blank_head; | |
8348 | ||
8349 | blank_head = blank_t = blank_p; | |
8350 | while (blank_head->prev != NULL) | |
8351 | blank_head = blank_head->prev; | |
8352 | while (blank_t->next != NULL) | |
8353 | blank_t = blank_t->next; | |
8354 | ||
8355 | if (blank_t->offset + blank_t->size <= sec->size) | |
8356 | { | |
8357 | blank_t->next = create_nds32_elf_blank (sec->size + 4, 0); | |
8358 | blank_t->next->prev = blank_t; | |
8359 | } | |
8360 | if (blank_head->offset > 0) | |
8361 | { | |
8362 | blank_head->prev = create_nds32_elf_blank (0, 0); | |
8363 | blank_head->prev->next = blank_head; | |
8364 | blank_head = blank_head->prev; | |
8365 | } | |
8366 | ||
8367 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
8368 | ||
8369 | /* The deletion must stop at the next ALIGN reloc for an alignment | |
8370 | power larger than the number of bytes we are deleting. */ | |
8371 | ||
8372 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8373 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
8374 | return FALSE; | |
8375 | ||
8376 | if (isym == NULL) | |
8377 | { | |
8378 | isym = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8379 | symtab_hdr->sh_info, 0, NULL, NULL, NULL); | |
8380 | symtab_hdr->contents = (bfd_byte *) isym; | |
8381 | } | |
8382 | ||
8383 | if (isym == NULL || symtab_hdr->sh_info == 0) | |
8384 | return FALSE; | |
8385 | ||
8386 | blank_t = blank_head; | |
8387 | calc_nds32_blank_total (blank_head); | |
8388 | ||
8389 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
8390 | { | |
8391 | /* Adjust all the relocs. */ | |
8392 | ||
8393 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
8394 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL, | |
8395 | TRUE /* keep_memory */); | |
8396 | irelend = internal_relocs + sect->reloc_count; | |
8397 | ||
8398 | blank_t = blank_head; | |
8399 | blank_t2 = blank_head; | |
8400 | ||
8401 | if (!(sect->flags & SEC_RELOC)) | |
8402 | continue; | |
8403 | ||
0c4bd9d9 | 8404 | nds32_get_section_contents (abfd, sect, &contents, TRUE); |
35c08157 KLC |
8405 | |
8406 | for (irel = internal_relocs; irel < irelend; irel++) | |
8407 | { | |
8408 | bfd_vma raddr; | |
8409 | ||
8410 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8 | |
8411 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32 | |
8412 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8413 | { | |
8414 | unsigned long val = 0; | |
1c8f6a4d KLC |
8415 | unsigned long mask; |
8416 | long before, between; | |
6cae483a | 8417 | long offset = 0; |
35c08157 KLC |
8418 | |
8419 | switch (ELF32_R_TYPE (irel->r_info)) | |
8420 | { | |
8421 | case R_NDS32_DIFF8: | |
1c8f6a4d | 8422 | offset = bfd_get_8 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8423 | break; |
8424 | case R_NDS32_DIFF16: | |
1c8f6a4d | 8425 | offset = bfd_get_16 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8426 | break; |
8427 | case R_NDS32_DIFF32: | |
8428 | val = bfd_get_32 (abfd, contents + irel->r_offset); | |
1c8f6a4d KLC |
8429 | /* Get the signed bit and mask for the high part. The |
8430 | gcc will alarm when right shift 32-bit since the | |
8431 | type size of long may be 32-bit. */ | |
8432 | mask = 0 - (val >> 31); | |
8433 | if (mask) | |
8434 | offset = (val | (mask - 0xffffffff)); | |
8435 | else | |
8436 | offset = val; | |
35c08157 KLC |
8437 | break; |
8438 | default: | |
8439 | BFD_ASSERT (0); | |
8440 | } | |
8441 | ||
8442 | /* DIFF value | |
8443 | 0 |encoded in location| | |
8444 | |------------|-------------------|--------- | |
8445 | sym+off(addend) | |
8446 | -- before ---| ***************** | |
8447 | --------------------- between ---| | |
8448 | ||
1c8f6a4d KLC |
8449 | We only care how much data are relax between DIFF, |
8450 | marked as ***. */ | |
35c08157 KLC |
8451 | |
8452 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8453 | between = get_nds32_elf_blank_total (&blank_t, |
8454 | irel->r_addend + offset, 0); | |
35c08157 KLC |
8455 | if (between == before) |
8456 | goto done_adjust_diff; | |
8457 | ||
8458 | switch (ELF32_R_TYPE (irel->r_info)) | |
8459 | { | |
8460 | case R_NDS32_DIFF8: | |
1c8f6a4d KLC |
8461 | bfd_put_8 (abfd, offset - (between - before), |
8462 | contents + irel->r_offset); | |
35c08157 KLC |
8463 | break; |
8464 | case R_NDS32_DIFF16: | |
1c8f6a4d KLC |
8465 | bfd_put_16 (abfd, offset - (between - before), |
8466 | contents + irel->r_offset); | |
35c08157 KLC |
8467 | break; |
8468 | case R_NDS32_DIFF32: | |
1c8f6a4d KLC |
8469 | bfd_put_32 (abfd, offset - (between - before), |
8470 | contents + irel->r_offset); | |
35c08157 KLC |
8471 | break; |
8472 | } | |
8473 | } | |
8474 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128 | |
8475 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8476 | { | |
8477 | bfd_vma val = 0; | |
8478 | unsigned int len = 0; | |
8479 | unsigned long before, between; | |
8480 | bfd_byte *endp, *p; | |
8481 | ||
4265548c PA |
8482 | val = _bfd_read_unsigned_leb128 (abfd, contents + irel->r_offset, |
8483 | &len); | |
35c08157 KLC |
8484 | |
8485 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8486 | between = get_nds32_elf_blank_total (&blank_t, |
8487 | irel->r_addend + val, 0); | |
35c08157 KLC |
8488 | if (between == before) |
8489 | goto done_adjust_diff; | |
8490 | ||
8491 | p = contents + irel->r_offset; | |
8492 | endp = p + len -1; | |
8493 | memset (p, 0x80, len); | |
8494 | *(endp) = 0; | |
8495 | p = write_uleb128 (p, val - (between - before)) - 1; | |
8496 | if (p < endp) | |
8497 | *p |= 0x80; | |
8498 | } | |
8499 | done_adjust_diff: | |
8500 | ||
8501 | if (sec == sect) | |
8502 | { | |
8503 | raddr = irel->r_offset; | |
1c8f6a4d KLC |
8504 | irel->r_offset -= get_nds32_elf_blank_total (&blank_t2, |
8505 | irel->r_offset, 1); | |
35c08157 KLC |
8506 | |
8507 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
8508 | continue; | |
8509 | if (blank_t2 && blank_t2->next | |
1c8f6a4d KLC |
8510 | && (blank_t2->offset > raddr |
8511 | || blank_t2->next->offset <= raddr)) | |
4eca0228 | 8512 | _bfd_error_handler |
38f14ab8 AM |
8513 | (_("%pB: error: search_nds32_elf_blank reports wrong node"), |
8514 | abfd); | |
35c08157 KLC |
8515 | |
8516 | /* Mark reloc in deleted portion as NONE. | |
8517 | For some relocs like R_NDS32_LABEL that doesn't modify the | |
8518 | content in the section. R_NDS32_LABEL doesn't belong to the | |
8519 | instruction in the section, so we should preserve it. */ | |
8520 | if (raddr >= blank_t2->offset | |
8521 | && raddr < blank_t2->offset + blank_t2->size | |
8522 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL | |
8523 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN | |
8524 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END | |
8525 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
8526 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND | |
8527 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND) | |
8528 | { | |
8529 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
8530 | R_NDS32_NONE); | |
8531 | continue; | |
8532 | } | |
8533 | } | |
8534 | ||
8535 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE | |
8536 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
8537 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
8538 | continue; | |
8539 | ||
8540 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info | |
8541 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx | |
8542 | && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION) | |
8543 | { | |
8544 | if (irel->r_addend <= sec->size) | |
8545 | irel->r_addend -= | |
8546 | get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1); | |
8547 | } | |
8548 | } | |
8549 | } | |
8550 | ||
8551 | /* Adjust the local symbols defined in this section. */ | |
8552 | blank_t = blank_head; | |
8553 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
8554 | { | |
8555 | if (isym->st_shndx == sec_shndx) | |
8556 | { | |
8557 | if (isym->st_value <= sec->size) | |
8558 | { | |
8559 | bfd_vma ahead; | |
8560 | bfd_vma orig_addr = isym->st_value; | |
8561 | ||
8562 | ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1); | |
8563 | isym->st_value -= ahead; | |
8564 | ||
8565 | /* Adjust function size. */ | |
1c8f6a4d KLC |
8566 | if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC |
8567 | && isym->st_size > 0) | |
8568 | isym->st_size -= | |
8569 | get_nds32_elf_blank_total | |
8570 | (&blank_t, orig_addr + isym->st_size, 0) - ahead; | |
35c08157 KLC |
8571 | } |
8572 | } | |
8573 | } | |
8574 | ||
8575 | /* Now adjust the global symbols defined in this section. */ | |
8576 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
8577 | - symtab_hdr->sh_info); | |
8578 | sym_hashes = elf_sym_hashes (abfd); | |
8579 | end_hashes = sym_hashes + symcount; | |
8580 | blank_t = blank_head; | |
8581 | for (; sym_hashes < end_hashes; sym_hashes++) | |
8582 | { | |
8583 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
8584 | ||
8585 | if ((sym_hash->root.type == bfd_link_hash_defined | |
8586 | || sym_hash->root.type == bfd_link_hash_defweak) | |
8587 | && sym_hash->root.u.def.section == sec) | |
8588 | { | |
8589 | if (sym_hash->root.u.def.value <= sec->size) | |
8590 | { | |
8591 | bfd_vma ahead; | |
8592 | bfd_vma orig_addr = sym_hash->root.u.def.value; | |
8593 | ||
8594 | ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1); | |
8595 | sym_hash->root.u.def.value -= ahead; | |
8596 | ||
8597 | /* Adjust function size. */ | |
8598 | if (sym_hash->type == STT_FUNC) | |
1c8f6a4d KLC |
8599 | sym_hash->size -= |
8600 | get_nds32_elf_blank_total | |
8601 | (&blank_t, orig_addr + sym_hash->size, 0) - ahead; | |
35c08157 KLC |
8602 | |
8603 | } | |
8604 | } | |
8605 | } | |
8606 | ||
8607 | contents = elf_section_data (sec)->this_hdr.contents; | |
8608 | blank_t = blank_head; | |
8609 | while (blank_t->next) | |
8610 | { | |
8611 | /* Actually delete the bytes. */ | |
8612 | ||
8613 | /* If current blank is the last blank overlap with current section, | |
8614 | go to finish process. */ | |
8615 | if (sec->size <= (blank_t->next->offset)) | |
8616 | break; | |
8617 | ||
8618 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8619 | contents + blank_t->offset + blank_t->size, | |
8620 | blank_t->next->offset - (blank_t->offset + blank_t->size)); | |
8621 | ||
8622 | blank_t = blank_t->next; | |
8623 | } | |
8624 | ||
8625 | if (sec->size > (blank_t->offset + blank_t->size)) | |
8626 | { | |
8627 | /* There are remaining code between blank and section boundary. | |
8628 | Move the remaining code to appropriate location. */ | |
8629 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8630 | contents + blank_t->offset + blank_t->size, | |
8631 | sec->size - (blank_t->offset + blank_t->size)); | |
8632 | sec->size -= blank_t->total_size + blank_t->size; | |
8633 | } | |
8634 | else | |
8635 | /* This blank is not entirely included in the section, | |
8636 | reduce the section size by only part of the blank size. */ | |
8637 | sec->size -= blank_t->total_size + (sec->size - blank_t->offset); | |
8638 | ||
8639 | while (blank_head) | |
8640 | { | |
8641 | blank_t = blank_head; | |
8642 | blank_head = blank_head->next; | |
8643 | remove_nds32_elf_blank (blank_t); | |
8644 | } | |
8645 | ||
8646 | return TRUE; | |
8647 | } | |
8648 | ||
8649 | /* Get the contents of a section. */ | |
8650 | ||
8651 | static int | |
0c4bd9d9 KLC |
8652 | nds32_get_section_contents (bfd *abfd, asection *sec, |
8653 | bfd_byte **contents_p, bfd_boolean cache) | |
35c08157 KLC |
8654 | { |
8655 | /* Get the section contents. */ | |
8656 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8657 | *contents_p = elf_section_data (sec)->this_hdr.contents; | |
8658 | else | |
8659 | { | |
8660 | if (!bfd_malloc_and_get_section (abfd, sec, contents_p)) | |
8661 | return FALSE; | |
0c4bd9d9 KLC |
8662 | if (cache) |
8663 | elf_section_data (sec)->this_hdr.contents = *contents_p; | |
35c08157 KLC |
8664 | } |
8665 | ||
8666 | return TRUE; | |
8667 | } | |
8668 | ||
8669 | /* Get the contents of the internal symbol of abfd. */ | |
8670 | ||
8671 | static int | |
8672 | nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED, | |
8673 | Elf_Internal_Sym **isymbuf_p) | |
8674 | { | |
8675 | Elf_Internal_Shdr *symtab_hdr; | |
8676 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8677 | ||
8678 | /* Read this BFD's local symbols if we haven't done so already. */ | |
8679 | if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0) | |
8680 | { | |
8681 | *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8682 | if (*isymbuf_p == NULL) | |
8683 | { | |
8684 | *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8685 | symtab_hdr->sh_info, 0, | |
8686 | NULL, NULL, NULL); | |
8687 | if (*isymbuf_p == NULL) | |
8688 | return FALSE; | |
8689 | } | |
8690 | } | |
8691 | symtab_hdr->contents = (bfd_byte *) (*isymbuf_p); | |
8692 | ||
8693 | return TRUE; | |
8694 | } | |
8695 | ||
8696 | /* Range of small data. */ | |
1c8f6a4d KLC |
8697 | static bfd_vma sdata_range[2][2]; |
8698 | static bfd_vma const sdata_init_range[2] = | |
8699 | { ACCURATE_12BIT_S1, ACCURATE_19BIT }; | |
35c08157 KLC |
8700 | |
8701 | static int | |
8702 | nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED, | |
8703 | bfd_byte *contents, bfd_vma addr) | |
8704 | { | |
8705 | unsigned long insn = bfd_getb32 (contents + addr); | |
8706 | ||
8707 | if (insn & 0x80000000) | |
8708 | return 2; | |
8709 | ||
8710 | return 4; | |
8711 | } | |
8712 | ||
8713 | /* Set the gp relax range. We have to measure the safe range | |
8714 | to do gp relaxation. */ | |
8715 | ||
8716 | static void | |
8717 | relax_range_measurement (bfd *abfd) | |
8718 | { | |
8719 | asection *sec_f, *sec_b; | |
8720 | /* For upper bound. */ | |
8721 | bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize; | |
8722 | bfd_vma align; | |
35c08157 KLC |
8723 | static int decide_relax_range = 0; |
8724 | int i; | |
1c8f6a4d | 8725 | int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]); |
35c08157 KLC |
8726 | |
8727 | if (decide_relax_range) | |
8728 | return; | |
8729 | decide_relax_range = 1; | |
8730 | ||
8731 | if (sda_rela_sec == NULL) | |
8732 | { | |
8733 | /* Since there is no data sections, we assume the range is page size. */ | |
1c8f6a4d | 8734 | for (i = 0; i < range_number; i++) |
35c08157 KLC |
8735 | { |
8736 | sdata_range[i][0] = sdata_init_range[i] - 0x1000; | |
8737 | sdata_range[i][1] = sdata_init_range[i] - 0x1000; | |
8738 | } | |
8739 | return; | |
8740 | } | |
8741 | ||
8742 | /* Get the biggest alignment power after the gp located section. */ | |
8743 | sec_f = sda_rela_sec->output_section; | |
8744 | sec_b = sec_f->next; | |
8745 | align = 0; | |
8746 | while (sec_b != NULL) | |
8747 | { | |
8748 | if ((unsigned)(1 << sec_b->alignment_power) > align) | |
8749 | align = (1 << sec_b->alignment_power); | |
8750 | sec_b = sec_b->next; | |
8751 | } | |
8752 | ||
8753 | /* I guess we can not determine the section before | |
8754 | gp located section, so we assume the align is max page size. */ | |
1c8f6a4d | 8755 | for (i = 0; i < range_number; i++) |
35c08157 | 8756 | { |
1c8f6a4d | 8757 | sdata_range[i][1] = sdata_init_range[i] - align; |
35c08157 | 8758 | BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]); |
1c8f6a4d | 8759 | sdata_range[i][0] = sdata_init_range[i] - maxpgsz; |
35c08157 KLC |
8760 | BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]); |
8761 | } | |
8762 | } | |
8763 | ||
8764 | /* These are macros used to check flags encoded in r_addend. | |
8765 | They are only used by nds32_elf_relax_section (). */ | |
8766 | #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff) | |
8767 | #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000) | |
8768 | #define IS_OPTIMIZE(addend) ((addend) & 0x40000000) | |
8769 | #define IS_16BIT_ON(addend) ((addend) & 0x20000000) | |
8770 | ||
695344c0 NC |
8771 | static const char * unrecognized_reloc_msg = |
8772 | /* xgettext:c-format */ | |
2dcf00ce | 8773 | N_("%pB: warning: %s points to unrecognized reloc at %#" PRIx64); |
695344c0 | 8774 | |
1c8f6a4d KLC |
8775 | /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */ |
8776 | ||
35c08157 | 8777 | static bfd_boolean |
1c8f6a4d KLC |
8778 | nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
8779 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
8780 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
8781 | Elf_Internal_Shdr *symtab_hdr) | |
8782 | { | |
8783 | /* There are 3 variations for LONGCALL1 | |
8784 | case 4-4-2; 16-bit on, optimize off or optimize for space | |
07d6d2b8 | 8785 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
1c8f6a4d | 8786 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8787 | jral5 ta ; |
1c8f6a4d KLC |
8788 | |
8789 | case 4-4-4; 16-bit off, optimize don't care | |
07d6d2b8 | 8790 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
1c8f6a4d | 8791 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8792 | jral ta ; |
1c8f6a4d KLC |
8793 | |
8794 | case 4-4-4; 16-bit on, optimize for speed | |
07d6d2b8 | 8795 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
1c8f6a4d | 8796 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8797 | jral ta ; |
1c8f6a4d KLC |
8798 | Check code for -mlong-calls output. */ |
8799 | ||
8800 | /* Get the reloc for the address from which the register is | |
8801 | being loaded. This reloc will tell us which function is | |
8802 | actually being called. */ | |
8803 | ||
8804 | bfd_vma laddr; | |
8805 | int seq_len; /* Original length of instruction sequence. */ | |
35c08157 | 8806 | uint32_t insn; |
1c8f6a4d KLC |
8807 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; |
8808 | int pic_ext_target = 0; | |
8809 | bfd_signed_vma foff; | |
35c08157 | 8810 | uint16_t insn16; |
35c08157 | 8811 | |
1c8f6a4d KLC |
8812 | irelend = internal_relocs + sec->reloc_count; |
8813 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
8814 | laddr = irel->r_offset; | |
8815 | *insn_len = seq_len; | |
35c08157 | 8816 | |
1c8f6a4d KLC |
8817 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
8818 | R_NDS32_HI20_RELA, laddr); | |
8819 | lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
8820 | R_NDS32_LO12S0_ORI_RELA, | |
8821 | laddr + 4); | |
35c08157 | 8822 | |
1c8f6a4d | 8823 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
35c08157 | 8824 | { |
695344c0 | 8825 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL1", |
2dcf00ce | 8826 | (uint64_t) irel->r_offset); |
1c8f6a4d | 8827 | return FALSE; |
35c08157 KLC |
8828 | } |
8829 | ||
1c8f6a4d KLC |
8830 | /* Get the value of the symbol referred to by the reloc. */ |
8831 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
8832 | &pic_ext_target); | |
35c08157 | 8833 | |
1c8f6a4d KLC |
8834 | /* This condition only happened when symbol is undefined. */ |
8835 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
8836 | || foff >= CONSERVATIVE_24BIT_S1) | |
8837 | return FALSE; | |
35c08157 | 8838 | |
1c8f6a4d KLC |
8839 | /* Relax to: jal symbol; 25_PCREL */ |
8840 | /* For simplicity of coding, we are going to modify the section | |
8841 | contents, the section relocs, and the BFD symbol table. We | |
8842 | must tell the rest of the code not to free up this | |
8843 | information. It would be possible to instead create a table | |
8844 | of changes which have to be made, as is done in coff-mips.c; | |
8845 | that would be more work, but would require less memory when | |
8846 | the linker is run. */ | |
8847 | ||
8848 | /* Replace the long call with a jal. */ | |
8849 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
8850 | R_NDS32_25_PCREL_RELA); | |
8851 | irel->r_addend = hi_irelfn->r_addend; | |
8852 | ||
8853 | /* We don't resolve this here but resolve it in relocate_section. */ | |
8854 | insn = INSN_JAL; | |
8855 | bfd_putb32 (insn, contents + irel->r_offset); | |
8856 | ||
8857 | hi_irelfn->r_info = | |
8858 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
8859 | lo_irelfn->r_info = | |
8860 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
8861 | *insn_len = 4; | |
8862 | ||
8863 | if (seq_len & 0x2) | |
8864 | { | |
8865 | insn16 = NDS32_NOP16; | |
8866 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
8867 | lo_irelfn->r_info = | |
8868 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
8869 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
8870 | *insn_len += 2; | |
8871 | } | |
8872 | return TRUE; | |
8873 | } | |
35c08157 | 8874 | |
1c8f6a4d KLC |
8875 | #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000) |
8876 | /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */ | |
35c08157 | 8877 | |
1c8f6a4d KLC |
8878 | static bfd_boolean |
8879 | nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
8880 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
8881 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
8882 | Elf_Internal_Shdr *symtab_hdr) | |
8883 | { | |
8884 | /* bltz rt, .L1 ; LONGCALL2 | |
8885 | jal symbol ; 25_PCREL | |
8886 | .L1: */ | |
35c08157 | 8887 | |
1c8f6a4d KLC |
8888 | /* Get the reloc for the address from which the register is |
8889 | being loaded. This reloc will tell us which function is | |
8890 | actually being called. */ | |
35c08157 | 8891 | |
1c8f6a4d KLC |
8892 | bfd_vma laddr; |
8893 | uint32_t insn; | |
8894 | Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend; | |
8895 | int pic_ext_target = 0; | |
8896 | bfd_signed_vma foff; | |
35c08157 | 8897 | |
1c8f6a4d KLC |
8898 | irelend = internal_relocs + sec->reloc_count; |
8899 | laddr = irel->r_offset; | |
8900 | i1_irelfn = | |
8901 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
8902 | R_NDS32_25_PCREL_RELA, laddr + 4); | |
8903 | ||
8904 | if (i1_irelfn == irelend) | |
35c08157 | 8905 | { |
695344c0 | 8906 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL2", |
2dcf00ce | 8907 | (uint64_t) irel->r_offset); |
1c8f6a4d | 8908 | return FALSE; |
35c08157 KLC |
8909 | } |
8910 | ||
1c8f6a4d | 8911 | insn = bfd_getb32 (contents + laddr); |
35c08157 | 8912 | |
1c8f6a4d KLC |
8913 | /* Get the value of the symbol referred to by the reloc. */ |
8914 | foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr, | |
8915 | &pic_ext_target); | |
35c08157 | 8916 | |
1c8f6a4d KLC |
8917 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
8918 | || foff >= CONSERVATIVE_16BIT_S1) | |
8919 | return FALSE; | |
35c08157 | 8920 | |
1c8f6a4d KLC |
8921 | /* Relax to bgezal rt, label ; 17_PCREL |
8922 | or bltzal rt, label ; 17_PCREL */ | |
8923 | ||
8924 | /* Convert to complimentary conditional call. */ | |
8925 | insn = CONVERT_CONDITION_CALL (insn); | |
8926 | ||
8927 | /* For simplicity of coding, we are going to modify the section | |
8928 | contents, the section relocs, and the BFD symbol table. We | |
8929 | must tell the rest of the code not to free up this | |
8930 | information. It would be possible to instead create a table | |
8931 | of changes which have to be made, as is done in coff-mips.c; | |
8932 | that would be more work, but would require less memory when | |
8933 | the linker is run. */ | |
8934 | ||
8935 | /* Clean unnessary relocations. */ | |
8936 | i1_irelfn->r_info = | |
8937 | ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE); | |
8938 | cond_irelfn = | |
8939 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
8940 | R_NDS32_17_PCREL_RELA, laddr); | |
8941 | if (cond_irelfn != irelend) | |
8942 | cond_irelfn->r_info = | |
8943 | ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE); | |
8944 | ||
8945 | /* Replace the long call with a bgezal. */ | |
8946 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), | |
8947 | R_NDS32_17_PCREL_RELA); | |
8948 | irel->r_addend = i1_irelfn->r_addend; | |
8949 | ||
8950 | bfd_putb32 (insn, contents + irel->r_offset); | |
8951 | ||
8952 | *insn_len = 4; | |
8953 | return TRUE; | |
8954 | } | |
35c08157 | 8955 | |
1c8f6a4d KLC |
8956 | /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */ |
8957 | ||
8958 | static bfd_boolean | |
8959 | nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
8960 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
8961 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
8962 | Elf_Internal_Shdr *symtab_hdr) | |
8963 | { | |
8964 | /* There are 3 variations for LONGCALL3 | |
8965 | case 4-4-4-2; 16-bit on, optimize off or optimize for space | |
07d6d2b8 AM |
8966 | bltz rt, $1 ; LONGCALL3 |
8967 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 8968 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8969 | jral5 ta ; |
1c8f6a4d KLC |
8970 | $1 |
8971 | ||
8972 | case 4-4-4-4; 16-bit off, optimize don't care | |
07d6d2b8 AM |
8973 | bltz rt, $1 ; LONGCALL3 |
8974 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 8975 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8976 | jral ta ; |
1c8f6a4d KLC |
8977 | $1 |
8978 | ||
8979 | case 4-4-4-4; 16-bit on, optimize for speed | |
07d6d2b8 AM |
8980 | bltz rt, $1 ; LONGCALL3 |
8981 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 8982 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 | 8983 | jral ta ; |
1c8f6a4d KLC |
8984 | $1 */ |
8985 | ||
8986 | /* Get the reloc for the address from which the register is | |
8987 | being loaded. This reloc will tell us which function is | |
8988 | actually being called. */ | |
8989 | ||
8990 | bfd_vma laddr; | |
8991 | int seq_len; /* Original length of instruction sequence. */ | |
8992 | uint32_t insn; | |
8993 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
8994 | int pic_ext_target = 0; | |
8995 | bfd_signed_vma foff; | |
8996 | uint16_t insn16; | |
8997 | ||
8998 | irelend = internal_relocs + sec->reloc_count; | |
8999 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9000 | laddr = irel->r_offset; | |
9001 | *insn_len = seq_len; | |
9002 | ||
9003 | hi_irelfn = | |
9004 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9005 | R_NDS32_HI20_RELA, laddr + 4); | |
9006 | lo_irelfn = | |
9007 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9008 | R_NDS32_LO12S0_ORI_RELA, laddr + 8); | |
9009 | ||
9010 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9011 | { | |
695344c0 | 9012 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL3", |
2dcf00ce | 9013 | (uint64_t) irel->r_offset); |
1c8f6a4d | 9014 | return FALSE; |
35c08157 KLC |
9015 | } |
9016 | ||
1c8f6a4d KLC |
9017 | /* Get the value of the symbol referred to by the reloc. */ |
9018 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9019 | &pic_ext_target); | |
35c08157 | 9020 | |
1c8f6a4d KLC |
9021 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9022 | || foff >= CONSERVATIVE_24BIT_S1) | |
9023 | return FALSE; | |
35c08157 | 9024 | |
1c8f6a4d KLC |
9025 | insn = bfd_getb32 (contents + laddr); |
9026 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
35c08157 | 9027 | { |
1c8f6a4d KLC |
9028 | /* Relax to bgezal rt, label ; 17_PCREL |
9029 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 9030 | |
1c8f6a4d KLC |
9031 | /* Convert to complimentary conditional call. */ |
9032 | insn = CONVERT_CONDITION_CALL (insn); | |
9033 | bfd_putb32 (insn, contents + irel->r_offset); | |
35c08157 | 9034 | |
1c8f6a4d KLC |
9035 | *insn_len = 4; |
9036 | irel->r_info = | |
9037 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9038 | hi_irelfn->r_info = | |
9039 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9040 | lo_irelfn->r_info = | |
9041 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
9042 | ||
9043 | cond_irelfn = | |
9044 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9045 | R_NDS32_17_PCREL_RELA, laddr); | |
9046 | if (cond_irelfn != irelend) | |
35c08157 | 9047 | { |
1c8f6a4d KLC |
9048 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9049 | R_NDS32_17_PCREL_RELA); | |
9050 | cond_irelfn->r_addend = hi_irelfn->r_addend; | |
35c08157 | 9051 | } |
1c8f6a4d KLC |
9052 | |
9053 | if (seq_len & 0x2) | |
35c08157 | 9054 | { |
1c8f6a4d KLC |
9055 | insn16 = NDS32_NOP16; |
9056 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9057 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9058 | R_NDS32_INSN16); | |
9059 | hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9060 | insn_len += 2; | |
35c08157 | 9061 | } |
1c8f6a4d KLC |
9062 | } |
9063 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
9064 | { | |
9065 | /* Relax to the following instruction sequence | |
9066 | bltz rt, $1 ; LONGCALL2 | |
9067 | jal symbol ; 25_PCREL | |
9068 | $1 */ | |
9069 | *insn_len = 8; | |
9070 | insn = INSN_JAL; | |
9071 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
35c08157 | 9072 | |
1c8f6a4d KLC |
9073 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9074 | R_NDS32_25_PCREL_RELA); | |
9075 | irel->r_info = | |
9076 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2); | |
9077 | ||
9078 | lo_irelfn->r_info = | |
9079 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9080 | |
1c8f6a4d | 9081 | if (seq_len & 0x2) |
35c08157 | 9082 | { |
1c8f6a4d KLC |
9083 | insn16 = NDS32_NOP16; |
9084 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9085 | lo_irelfn->r_info = | |
9086 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
9087 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9088 | insn_len += 2; | |
9089 | } | |
9090 | } | |
9091 | return TRUE; | |
9092 | } | |
35c08157 | 9093 | |
1c8f6a4d | 9094 | /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */ |
35c08157 | 9095 | |
1c8f6a4d KLC |
9096 | static bfd_boolean |
9097 | nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9098 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9099 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9100 | Elf_Internal_Shdr *symtab_hdr) | |
9101 | { | |
9102 | /* There are 3 variations for LONGJUMP1 | |
9103 | case 4-4-2; 16-bit bit on, optimize off or optimize for space | |
07d6d2b8 AM |
9104 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
9105 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9106 | jr5 ta ; | |
1c8f6a4d KLC |
9107 | |
9108 | case 4-4-4; 16-bit off, optimize don't care | |
07d6d2b8 AM |
9109 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
9110 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9111 | jr ta ; | |
1c8f6a4d KLC |
9112 | |
9113 | case 4-4-4; 16-bit on, optimize for speed | |
07d6d2b8 AM |
9114 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
9115 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9116 | jr ta ; */ | |
1c8f6a4d KLC |
9117 | |
9118 | /* Get the reloc for the address from which the register is | |
9119 | being loaded. This reloc will tell us which function is | |
9120 | actually being called. */ | |
9121 | ||
9122 | bfd_vma laddr; | |
9123 | int seq_len; /* Original length of instruction sequence. */ | |
9124 | int insn16_on; /* 16-bit on/off. */ | |
9125 | uint32_t insn; | |
9126 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; | |
9127 | int pic_ext_target = 0; | |
9128 | bfd_signed_vma foff; | |
9129 | uint16_t insn16; | |
9130 | unsigned long reloc; | |
35c08157 | 9131 | |
1c8f6a4d KLC |
9132 | irelend = internal_relocs + sec->reloc_count; |
9133 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9134 | laddr = irel->r_offset; | |
9135 | *insn_len = seq_len; | |
9136 | insn16_on = IS_16BIT_ON (irel->r_addend); | |
9137 | ||
9138 | hi_irelfn = | |
9139 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9140 | R_NDS32_HI20_RELA, laddr); | |
9141 | lo_irelfn = | |
9142 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9143 | R_NDS32_LO12S0_ORI_RELA, laddr + 4); | |
9144 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9145 | { | |
695344c0 | 9146 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP1", |
2dcf00ce | 9147 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9148 | return FALSE; |
9149 | } | |
35c08157 | 9150 | |
1c8f6a4d KLC |
9151 | /* Get the value of the symbol referred to by the reloc. */ |
9152 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9153 | &pic_ext_target); | |
35c08157 | 9154 | |
1c8f6a4d KLC |
9155 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
9156 | || foff < -CONSERVATIVE_24BIT_S1) | |
9157 | return FALSE; | |
35c08157 | 9158 | |
1c8f6a4d KLC |
9159 | if (insn16_on && foff >= -ACCURATE_8BIT_S1 |
9160 | && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2)) | |
9161 | { | |
9162 | /* j8 label */ | |
9163 | /* 16-bit on, but not optimized for speed. */ | |
9164 | reloc = R_NDS32_9_PCREL_RELA; | |
9165 | insn16 = INSN_J8; | |
9166 | bfd_putb16 (insn16, contents + irel->r_offset); | |
9167 | *insn_len = 2; | |
9168 | irel->r_info = | |
9169 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
9170 | } | |
9171 | else | |
9172 | { | |
9173 | /* j label */ | |
9174 | reloc = R_NDS32_25_PCREL_RELA; | |
9175 | insn = INSN_J; | |
9176 | bfd_putb32 (insn, contents + irel->r_offset); | |
9177 | *insn_len = 4; | |
9178 | irel->r_info = | |
9179 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16); | |
9180 | irel->r_addend = 0; | |
9181 | } | |
35c08157 | 9182 | |
1c8f6a4d KLC |
9183 | hi_irelfn->r_info = |
9184 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9185 | lo_irelfn->r_info = | |
9186 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9187 | |
1c8f6a4d KLC |
9188 | if ((seq_len & 0x2) && ((*insn_len & 2) == 0)) |
9189 | { | |
9190 | insn16 = NDS32_NOP16; | |
9191 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9192 | lo_irelfn->r_info = | |
9193 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9194 | R_NDS32_INSN16); | |
9195 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9196 | *insn_len += 2; | |
9197 | } | |
9198 | return TRUE; | |
9199 | } | |
9200 | ||
9201 | /* Revert condition branch. This function does not check if the input | |
9202 | instruction is condition branch or not. */ | |
9203 | ||
9204 | static void | |
9205 | nds32_elf_convert_branch (uint16_t insn16, uint32_t insn, | |
9206 | uint16_t *re_insn16, uint32_t *re_insn) | |
9207 | { | |
9208 | uint32_t comp_insn = 0; | |
9209 | uint16_t comp_insn16 = 0; | |
9210 | ||
9211 | if (insn) | |
9212 | { | |
9213 | if (N32_OP6 (insn) == N32_OP6_BR1) | |
9214 | { | |
9215 | /* beqs label. */ | |
9216 | comp_insn = (insn ^ 0x4000) & 0xffffc000; | |
9217 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5) | |
35c08157 | 9218 | { |
1c8f6a4d KLC |
9219 | /* Insn can be contracted to 16-bit implied r5. */ |
9220 | comp_insn16 = | |
9221 | (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38; | |
9222 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
35c08157 | 9223 | } |
1c8f6a4d KLC |
9224 | } |
9225 | else if (N32_OP6 (insn) == N32_OP6_BR3) | |
9226 | { | |
9227 | /* bnec $ta, imm11, label. */ | |
9228 | comp_insn = (insn ^ 0x80000) & 0xffffff00; | |
9229 | } | |
9230 | else | |
9231 | { | |
9232 | comp_insn = (insn ^ 0x10000) & 0xffffc000; | |
9233 | if (N32_BR2_SUB (insn) == N32_BR2_BEQZ | |
9234 | || N32_BR2_SUB (insn) == N32_BR2_BNEZ) | |
35c08157 | 9235 | { |
1c8f6a4d | 9236 | if (N32_IS_RT3 (insn)) |
35c08157 | 9237 | { |
1c8f6a4d KLC |
9238 | /* Insn can be contracted to 16-bit. */ |
9239 | comp_insn16 = | |
9240 | (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38; | |
9241 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
9242 | } | |
9243 | else if (N32_RT5 (insn) == REG_R15) | |
9244 | { | |
9245 | /* Insn can be contracted to 16-bit. */ | |
9246 | comp_insn16 = | |
9247 | (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38; | |
35c08157 | 9248 | } |
35c08157 KLC |
9249 | } |
9250 | } | |
1c8f6a4d KLC |
9251 | } |
9252 | else | |
9253 | { | |
9254 | switch ((insn16 & 0xf000) >> 12) | |
35c08157 | 9255 | { |
1c8f6a4d KLC |
9256 | case 0xc: |
9257 | /* beqz38 or bnez38 */ | |
9258 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9259 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ; | |
9260 | comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20; | |
9261 | break; | |
35c08157 | 9262 | |
1c8f6a4d KLC |
9263 | case 0xd: |
9264 | /* beqs38 or bnes38 */ | |
9265 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9266 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ; | |
9267 | comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20) | |
9268 | | (REG_R5 << 15); | |
9269 | break; | |
35c08157 | 9270 | |
1c8f6a4d KLC |
9271 | case 0xe: |
9272 | /* beqzS8 or bnezS8 */ | |
9273 | comp_insn16 = (insn16 ^ 0x0100) & 0xff00; | |
9274 | comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ; | |
9275 | comp_insn |= REG_R15 << 20; | |
9276 | break; | |
35c08157 | 9277 | |
1c8f6a4d KLC |
9278 | default: |
9279 | break; | |
9280 | } | |
9281 | } | |
9282 | if (comp_insn && re_insn) | |
9283 | *re_insn = comp_insn; | |
9284 | if (comp_insn16 && re_insn16) | |
9285 | *re_insn16 = comp_insn16; | |
9286 | } | |
35c08157 | 9287 | |
1c8f6a4d | 9288 | /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */ |
35c08157 | 9289 | |
1c8f6a4d KLC |
9290 | static bfd_boolean |
9291 | nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9292 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9293 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9294 | Elf_Internal_Shdr *symtab_hdr) | |
9295 | { | |
9296 | /* There are 3 variations for LONGJUMP2 | |
9297 | case 2-4; 1st insn convertible, 16-bit on, | |
9298 | optimize off or optimize for space | |
9299 | bnes38 rt, ra, $1 ; LONGJUMP2 | |
9300 | j label ; 25_PCREL | |
9301 | $1: | |
9302 | ||
9303 | case 4-4; 1st insn not convertible | |
9304 | bne rt, ra, $1 ; LONGJUMP2 | |
9305 | j label ; 25_PCREL | |
9306 | $1: | |
9307 | ||
9308 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9309 | bne rt, ra, $1 ; LONGJUMP2 | |
9310 | j label ; 25_PCREL | |
9311 | $1: */ | |
9312 | ||
9313 | /* Get the reloc for the address from which the register is | |
9314 | being loaded. This reloc will tell us which function is | |
9315 | actually being called. */ | |
9316 | ||
9317 | bfd_vma laddr; | |
9318 | int seq_len; /* Original length of instruction sequence. */ | |
9319 | Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend; | |
9320 | int pic_ext_target = 0, first_size; | |
9321 | unsigned int i; | |
9322 | bfd_signed_vma foff; | |
9323 | uint32_t insn, re_insn = 0; | |
9324 | uint16_t insn16, re_insn16 = 0; | |
9325 | unsigned long reloc, cond_reloc; | |
35c08157 | 9326 | |
1c8f6a4d KLC |
9327 | enum elf_nds32_reloc_type checked_types[] = |
9328 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
35c08157 | 9329 | |
1c8f6a4d KLC |
9330 | irelend = internal_relocs + sec->reloc_count; |
9331 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9332 | laddr = irel->r_offset; | |
9333 | *insn_len = seq_len; | |
9334 | first_size = (seq_len == 6) ? 2 : 4; | |
9335 | ||
9336 | i2_irelfn = | |
9337 | find_relocs_at_address_addr (irel, internal_relocs, | |
9338 | irelend, R_NDS32_25_PCREL_RELA, | |
9339 | laddr + first_size); | |
9340 | ||
9341 | for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++) | |
9342 | { | |
9343 | cond_irelfn = | |
9344 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9345 | checked_types[i], laddr); | |
9346 | if (cond_irelfn != irelend) | |
9347 | break; | |
9348 | } | |
35c08157 | 9349 | |
1c8f6a4d KLC |
9350 | if (i2_irelfn == irelend || cond_irelfn == irelend) |
9351 | { | |
695344c0 | 9352 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP2", |
2dcf00ce | 9353 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9354 | return FALSE; |
9355 | } | |
35c08157 | 9356 | |
1c8f6a4d KLC |
9357 | /* Get the value of the symbol referred to by the reloc. */ |
9358 | foff = | |
9359 | calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr, | |
9360 | &pic_ext_target); | |
9361 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 | |
9362 | || foff >= CONSERVATIVE_16BIT_S1) | |
9363 | return FALSE; | |
35c08157 | 9364 | |
1c8f6a4d KLC |
9365 | /* Get the all corresponding instructions. */ |
9366 | if (first_size == 4) | |
9367 | { | |
9368 | insn = bfd_getb32 (contents + laddr); | |
9369 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9370 | } | |
9371 | else | |
9372 | { | |
9373 | insn16 = bfd_getb16 (contents + laddr); | |
9374 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9375 | } | |
35c08157 | 9376 | |
1c8f6a4d KLC |
9377 | if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size) |
9378 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9379 | { | |
9380 | if (first_size == 4) | |
9381 | { | |
9382 | /* Don't convert it to 16-bit now, keep this as relaxable for | |
9383 | ``label reloc; INSN16''. */ | |
35c08157 | 9384 | |
1c8f6a4d KLC |
9385 | /* Save comp_insn32 to buffer. */ |
9386 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9387 | *insn_len = 4; | |
9388 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9389 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9390 | cond_reloc = R_NDS32_INSN16; | |
9391 | } | |
9392 | else | |
9393 | { | |
9394 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9395 | *insn_len = 2; | |
9396 | reloc = R_NDS32_9_PCREL_RELA; | |
9397 | cond_reloc = R_NDS32_NONE; | |
9398 | } | |
9399 | } | |
9400 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9401 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9402 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9403 | { | |
9404 | /* beqs label ; 15_PCREL */ | |
9405 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9406 | *insn_len = 4; | |
9407 | reloc = R_NDS32_15_PCREL_RELA; | |
9408 | cond_reloc = R_NDS32_NONE; | |
9409 | } | |
9410 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9411 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9412 | && foff < CONSERVATIVE_16BIT_S1) | |
9413 | { | |
9414 | /* beqz label ; 17_PCREL */ | |
9415 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9416 | *insn_len = 4; | |
9417 | reloc = R_NDS32_17_PCREL_RELA; | |
9418 | cond_reloc = R_NDS32_NONE; | |
9419 | } | |
9420 | else | |
9421 | return FALSE; | |
35c08157 | 9422 | |
1c8f6a4d KLC |
9423 | /* Set all relocations. */ |
9424 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc); | |
9425 | irel->r_addend = i2_irelfn->r_addend; | |
35c08157 | 9426 | |
1c8f6a4d KLC |
9427 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), |
9428 | cond_reloc); | |
9429 | cond_irelfn->r_addend = 0; | |
35c08157 | 9430 | |
1c8f6a4d KLC |
9431 | if ((seq_len ^ *insn_len ) & 0x2) |
9432 | { | |
9433 | insn16 = NDS32_NOP16; | |
9434 | bfd_putb16 (insn16, contents + irel->r_offset + 4); | |
9435 | i2_irelfn->r_offset = 4; | |
9436 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9437 | R_NDS32_INSN16); | |
9438 | i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9439 | *insn_len += 2; | |
9440 | } | |
9441 | else | |
9442 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9443 | R_NDS32_NONE); | |
9444 | return TRUE; | |
9445 | } | |
35c08157 | 9446 | |
1c8f6a4d | 9447 | /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */ |
35c08157 | 9448 | |
1c8f6a4d KLC |
9449 | static bfd_boolean |
9450 | nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9451 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9452 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9453 | Elf_Internal_Shdr *symtab_hdr) | |
9454 | { | |
9455 | /* There are 5 variations for LONGJUMP3 | |
9456 | case 1: 2-4-4-2; 1st insn convertible, 16-bit on, | |
9457 | optimize off or optimize for space | |
07d6d2b8 AM |
9458 | bnes38 rt, ra, $1 ; LONGJUMP3 |
9459 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 9460 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 AM |
9461 | jr5 ta ; |
9462 | $1: ; | |
1c8f6a4d KLC |
9463 | |
9464 | case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed | |
07d6d2b8 AM |
9465 | bnes38 rt, ra, $1 ; LONGJUMP3 |
9466 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 9467 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 AM |
9468 | jr5 ta ; |
9469 | $1: ; LABEL | |
1c8f6a4d KLC |
9470 | |
9471 | case 3: 4-4-4-2; 1st insn not convertible, 16-bit on, | |
9472 | optimize off or optimize for space | |
07d6d2b8 AM |
9473 | bne rt, ra, $1 ; LONGJUMP3 |
9474 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 9475 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 AM |
9476 | jr5 ta ; |
9477 | $1: ; | |
1c8f6a4d KLC |
9478 | |
9479 | case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care | |
9480 | 16-bit off if no INSN16 | |
07d6d2b8 AM |
9481 | bne rt, ra, $1 ; LONGJUMP3 |
9482 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 9483 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 AM |
9484 | jr ta ; |
9485 | $1: ; | |
1c8f6a4d KLC |
9486 | |
9487 | case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed | |
9488 | 16-bit off if no INSN16 | |
07d6d2b8 AM |
9489 | bne rt, ra, $1 ; LONGJUMP3 |
9490 | sethi ta, hi20(symbol) ; HI20 | |
1c8f6a4d | 9491 | ori ta, ta, lo12(symbol) ; LO12S0 |
07d6d2b8 AM |
9492 | jr ta ; |
9493 | $1: ; LABEL */ | |
1c8f6a4d KLC |
9494 | |
9495 | /* Get the reloc for the address from which the register is | |
9496 | being loaded. This reloc will tell us which function is | |
9497 | actually being called. */ | |
9498 | enum elf_nds32_reloc_type checked_types[] = | |
9499 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
9500 | ||
9501 | int reloc_off = 0, cond_removed = 0, convertible; | |
9502 | bfd_vma laddr; | |
9503 | int seq_len; /* Original length of instruction sequence. */ | |
9504 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
9505 | int pic_ext_target = 0, first_size; | |
9506 | unsigned int i; | |
9507 | bfd_signed_vma foff; | |
9508 | uint32_t insn, re_insn = 0; | |
9509 | uint16_t insn16, re_insn16 = 0; | |
9510 | unsigned long reloc, cond_reloc; | |
35c08157 | 9511 | |
1c8f6a4d KLC |
9512 | irelend = internal_relocs + sec->reloc_count; |
9513 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9514 | laddr = irel->r_offset; | |
9515 | *insn_len = seq_len; | |
35c08157 | 9516 | |
1c8f6a4d | 9517 | convertible = IS_1ST_CONVERT (irel->r_addend); |
35c08157 | 9518 | |
1c8f6a4d KLC |
9519 | if (convertible) |
9520 | first_size = 2; | |
9521 | else | |
9522 | first_size = 4; | |
9523 | ||
9524 | /* Get all needed relocations. */ | |
9525 | hi_irelfn = | |
9526 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9527 | R_NDS32_HI20_RELA, laddr + first_size); | |
9528 | lo_irelfn = | |
9529 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9530 | R_NDS32_LO12S0_ORI_RELA, | |
9531 | laddr + first_size + 4); | |
9532 | ||
9533 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
9534 | { | |
9535 | cond_irelfn = | |
9536 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9537 | checked_types[i], laddr); | |
9538 | if (cond_irelfn != irelend) | |
9539 | break; | |
9540 | } | |
35c08157 | 9541 | |
1c8f6a4d KLC |
9542 | if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend) |
9543 | { | |
695344c0 | 9544 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP3", |
2dcf00ce | 9545 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9546 | return FALSE; |
9547 | } | |
35c08157 | 9548 | |
1c8f6a4d KLC |
9549 | /* Get the value of the symbol referred to by the reloc. */ |
9550 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9551 | &pic_ext_target); | |
35c08157 | 9552 | |
1c8f6a4d KLC |
9553 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9554 | || foff >= CONSERVATIVE_24BIT_S1) | |
9555 | return FALSE; | |
35c08157 | 9556 | |
1c8f6a4d KLC |
9557 | /* Get the all corresponding instructions. */ |
9558 | if (first_size == 4) | |
9559 | { | |
9560 | insn = bfd_getb32 (contents + laddr); | |
9561 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9562 | } | |
9563 | else | |
9564 | { | |
9565 | insn16 = bfd_getb16 (contents + laddr); | |
9566 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9567 | } | |
35c08157 | 9568 | |
1c8f6a4d KLC |
9569 | /* For simplicity of coding, we are going to modify the section |
9570 | contents, the section relocs, and the BFD symbol table. We | |
9571 | must tell the rest of the code not to free up this | |
9572 | information. It would be possible to instead create a table | |
9573 | of changes which have to be made, as is done in coff-mips.c; | |
9574 | that would be more work, but would require less memory when | |
9575 | the linker is run. */ | |
35c08157 | 9576 | |
1c8f6a4d KLC |
9577 | if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size |
9578 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9579 | { | |
9580 | if (!(seq_len & 0x2)) | |
9581 | { | |
9582 | /* Don't convert it to 16-bit now, keep this as relaxable | |
9583 | for ``label reloc; INSN1a''6. */ | |
9584 | /* Save comp_insn32 to buffer. */ | |
9585 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9586 | *insn_len = 4; | |
9587 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9588 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9589 | cond_reloc = R_NDS32_INSN16; | |
9590 | } | |
9591 | else | |
9592 | { | |
9593 | /* Not optimize for speed; convert sequence to 16-bit. */ | |
9594 | /* Save comp_insn16 to buffer. */ | |
9595 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9596 | *insn_len = 2; | |
9597 | reloc = R_NDS32_9_PCREL_RELA; | |
9598 | cond_reloc = R_NDS32_NONE; | |
9599 | } | |
9600 | cond_removed = 1; | |
9601 | } | |
9602 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9603 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9604 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9605 | { | |
9606 | /* beqs label ; 15_PCREL */ | |
9607 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9608 | *insn_len = 4; | |
9609 | reloc = R_NDS32_15_PCREL_RELA; | |
9610 | cond_reloc = R_NDS32_NONE; | |
9611 | cond_removed = 1; | |
9612 | } | |
9613 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9614 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9615 | && foff < CONSERVATIVE_16BIT_S1) | |
9616 | { | |
9617 | /* beqz label ; 17_PCREL */ | |
9618 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9619 | *insn_len = 4; | |
9620 | reloc = R_NDS32_17_PCREL_RELA; | |
9621 | cond_reloc = R_NDS32_NONE; | |
9622 | cond_removed = 1; | |
9623 | } | |
9624 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
9625 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
9626 | { | |
9627 | /* Relax to one of the following 3 variations | |
9628 | ||
9629 | case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize | |
9630 | for space | |
9631 | bnes38 rt, $1 ; LONGJUMP2 | |
9632 | j label ; 25_PCREL | |
9633 | $1 | |
9634 | ||
9635 | case 4-4; 1st insn not convertible, others don't care | |
9636 | bne rt, ra, $1 ; LONGJUMP2 | |
9637 | j label ; 25_PCREL | |
9638 | $1 | |
9639 | ||
9640 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9641 | bne rt, ra, $1 ; LONGJUMP2 | |
9642 | j label ; 25_PCREL | |
9643 | $1 */ | |
9644 | ||
9645 | /* Offset for first instruction. */ | |
9646 | ||
9647 | /* Use j label as second instruction. */ | |
9648 | *insn_len = 4 + first_size; | |
9649 | insn = INSN_J; | |
9650 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
9651 | reloc = R_NDS32_LONGJUMP2; | |
9652 | cond_reloc = R_NDS32_25_PLTREL; | |
9653 | } | |
9654 | else | |
9655 | return FALSE; | |
35c08157 | 9656 | |
1c8f6a4d KLC |
9657 | if (cond_removed == 1) |
9658 | { | |
9659 | /* Set all relocations. */ | |
9660 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9661 | irel->r_addend = hi_irelfn->r_addend; | |
9662 | ||
9663 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), | |
9664 | cond_reloc); | |
9665 | cond_irelfn->r_addend = 0; | |
9666 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9667 | R_NDS32_NONE); | |
9668 | } | |
9669 | else | |
9670 | { | |
9671 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
1c8f6a4d KLC |
9672 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9673 | cond_reloc); | |
9674 | } | |
35c08157 | 9675 | |
1c8f6a4d KLC |
9676 | if ((seq_len ^ *insn_len ) & 0x2) |
9677 | { | |
9678 | insn16 = NDS32_NOP16; | |
9679 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9680 | lo_irelfn->r_offset = *insn_len; | |
9681 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9682 | R_NDS32_INSN16); | |
9683 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9684 | *insn_len += 2; | |
9685 | } | |
9686 | else | |
9687 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9688 | R_NDS32_NONE); | |
9689 | return TRUE; | |
9690 | } | |
35c08157 | 9691 | |
1c8f6a4d | 9692 | /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */ |
35c08157 | 9693 | |
1c8f6a4d KLC |
9694 | static bfd_boolean |
9695 | nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9696 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9697 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9698 | Elf_Internal_Shdr *symtab_hdr) | |
9699 | { | |
9700 | /* The pattern for LONGCALL4. Support for function cse. | |
9701 | sethi ta, hi20(symbol) ; LONGCALL4/HI20 | |
9702 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
9703 | jral ta ; PTR_RES/EMPTY/INSN16 */ | |
35c08157 | 9704 | |
1c8f6a4d KLC |
9705 | bfd_vma laddr; |
9706 | uint32_t insn; | |
9707 | Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel; | |
9708 | Elf_Internal_Rela *irelend; | |
9709 | int pic_ext_target = 0; | |
9710 | bfd_signed_vma foff; | |
35c08157 | 9711 | |
1c8f6a4d KLC |
9712 | irelend = internal_relocs + sec->reloc_count; |
9713 | laddr = irel->r_offset; | |
35c08157 | 9714 | |
1c8f6a4d KLC |
9715 | /* Get the reloc for the address from which the register is |
9716 | being loaded. This reloc will tell us which function is | |
9717 | actually being called. */ | |
9718 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9719 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 9720 | |
1c8f6a4d KLC |
9721 | if (hi_irel == irelend) |
9722 | { | |
695344c0 | 9723 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4", |
2dcf00ce | 9724 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9725 | return FALSE; |
9726 | } | |
35c08157 | 9727 | |
1c8f6a4d KLC |
9728 | /* Get the value of the symbol referred to by the reloc. */ |
9729 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
9730 | &pic_ext_target); | |
35c08157 | 9731 | |
1c8f6a4d KLC |
9732 | /* This condition only happened when symbol is undefined. */ |
9733 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
9734 | || foff >= CONSERVATIVE_24BIT_S1) | |
9735 | return FALSE; | |
35c08157 | 9736 | |
1c8f6a4d KLC |
9737 | /* Relax to: jal symbol; 25_PCREL */ |
9738 | /* For simplicity of coding, we are going to modify the section | |
9739 | contents, the section relocs, and the BFD symbol table. We | |
9740 | must tell the rest of the code not to free up this | |
9741 | information. It would be possible to instead create a table | |
9742 | of changes which have to be made, as is done in coff-mips.c; | |
9743 | that would be more work, but would require less memory when | |
9744 | the linker is run. */ | |
35c08157 | 9745 | |
1c8f6a4d KLC |
9746 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9747 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
9748 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9749 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 9750 | |
1c8f6a4d KLC |
9751 | if (ptr_irel == irelend || em_irel == irelend) |
9752 | { | |
695344c0 | 9753 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL4", |
2dcf00ce | 9754 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9755 | return FALSE; |
9756 | } | |
9757 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ | |
9758 | insn = bfd_getb32 (contents + irel->r_addend); | |
9759 | if (insn & 0x80000000) | |
9760 | return FALSE; | |
35c08157 | 9761 | |
1c8f6a4d KLC |
9762 | /* Replace the long call with a jal. */ |
9763 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
9764 | R_NDS32_25_PCREL_RELA); | |
9765 | ptr_irel->r_addend = 1; | |
35c08157 | 9766 | |
1c8f6a4d KLC |
9767 | /* We don't resolve this here but resolve it in relocate_section. */ |
9768 | insn = INSN_JAL; | |
9769 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 9770 | |
1c8f6a4d KLC |
9771 | irel->r_info = |
9772 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 9773 | |
1c8f6a4d KLC |
9774 | /* If there is function cse, HI20 can not remove now. */ |
9775 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9776 | R_NDS32_LONGCALL4, laddr); | |
9777 | if (call_irel == irelend) | |
9778 | { | |
9779 | *insn_len = 0; | |
9780 | hi_irel->r_info = | |
9781 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
9782 | } | |
35c08157 | 9783 | |
1c8f6a4d KLC |
9784 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9785 | R_NDS32_INSN16, irel->r_addend); | |
9786 | if (insn_irel != irelend) | |
9787 | insn_irel->r_info = | |
9788 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 9789 | |
1c8f6a4d KLC |
9790 | return TRUE; |
9791 | } | |
35c08157 | 9792 | |
1c8f6a4d | 9793 | /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */ |
35c08157 | 9794 | |
1c8f6a4d KLC |
9795 | static bfd_boolean |
9796 | nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9797 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9798 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9799 | Elf_Internal_Shdr *symtab_hdr) | |
9800 | { | |
9801 | /* The pattern for LONGCALL5. | |
9802 | bltz rt, .L1 ; LONGCALL5/17_PCREL | |
9803 | jal symbol ; 25_PCREL | |
9804 | .L1: */ | |
35c08157 | 9805 | |
1c8f6a4d KLC |
9806 | bfd_vma laddr; |
9807 | uint32_t insn; | |
9808 | Elf_Internal_Rela *cond_irel, *irelend; | |
9809 | int pic_ext_target = 0; | |
9810 | bfd_signed_vma foff; | |
35c08157 | 9811 | |
1c8f6a4d KLC |
9812 | irelend = internal_relocs + sec->reloc_count; |
9813 | laddr = irel->r_offset; | |
9814 | insn = bfd_getb32 (contents + laddr); | |
35c08157 | 9815 | |
1c8f6a4d KLC |
9816 | /* Get the reloc for the address from which the register is |
9817 | being loaded. This reloc will tell us which function is | |
9818 | actually being called. */ | |
9819 | cond_irel = | |
9820 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9821 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
9822 | if (cond_irel == irelend) | |
9823 | { | |
695344c0 | 9824 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL5", |
2dcf00ce | 9825 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9826 | return FALSE; |
9827 | } | |
35c08157 | 9828 | |
1c8f6a4d KLC |
9829 | /* Get the value of the symbol referred to by the reloc. */ |
9830 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
9831 | &pic_ext_target); | |
35c08157 | 9832 | |
1c8f6a4d KLC |
9833 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
9834 | || foff >= CONSERVATIVE_16BIT_S1) | |
9835 | return FALSE; | |
35c08157 | 9836 | |
1c8f6a4d KLC |
9837 | /* Relax to bgezal rt, label ; 17_PCREL |
9838 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 9839 | |
1c8f6a4d KLC |
9840 | /* Convert to complimentary conditional call. */ |
9841 | insn = CONVERT_CONDITION_CALL (insn); | |
35c08157 | 9842 | |
1c8f6a4d KLC |
9843 | /* For simplicity of coding, we are going to modify the section |
9844 | contents, the section relocs, and the BFD symbol table. We | |
9845 | must tell the rest of the code not to free up this | |
9846 | information. It would be possible to instead create a table | |
9847 | of changes which have to be made, as is done in coff-mips.c; | |
9848 | that would be more work, but would require less memory when | |
9849 | the linker is run. */ | |
35c08157 | 9850 | |
1c8f6a4d KLC |
9851 | /* Modify relocation and contents. */ |
9852 | cond_irel->r_info = | |
9853 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA); | |
35c08157 | 9854 | |
1c8f6a4d KLC |
9855 | /* Replace the long call with a bgezal. */ |
9856 | bfd_putb32 (insn, contents + cond_irel->r_offset); | |
9857 | *insn_len = 0; | |
35c08157 | 9858 | |
1c8f6a4d KLC |
9859 | /* Clean unnessary relocations. */ |
9860 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 9861 | |
1c8f6a4d KLC |
9862 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9863 | R_NDS32_17_PCREL_RELA, laddr); | |
9864 | cond_irel->r_info = | |
9865 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 9866 | |
1c8f6a4d KLC |
9867 | return TRUE; |
9868 | } | |
35c08157 | 9869 | |
1c8f6a4d | 9870 | /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */ |
35c08157 | 9871 | |
1c8f6a4d KLC |
9872 | static bfd_boolean |
9873 | nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9874 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9875 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9876 | Elf_Internal_Shdr *symtab_hdr) | |
9877 | { | |
9878 | /* The pattern for LONGCALL6. | |
9879 | bltz rt, .L1 ; LONGCALL6/17_PCREL | |
9880 | sethi ta, hi20(symbol) ; HI20/PTR | |
9881 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
9882 | jral ta ; PTR_RES/EMPTY/INSN16 | |
9883 | .L1 */ | |
9884 | ||
9885 | bfd_vma laddr; | |
9886 | uint32_t insn; | |
9887 | Elf_Internal_Rela *em_irel, *cond_irel, *irelend; | |
9888 | int pic_ext_target = 0; | |
9889 | bfd_signed_vma foff; | |
35c08157 | 9890 | |
1c8f6a4d KLC |
9891 | irelend = internal_relocs + sec->reloc_count; |
9892 | laddr = irel->r_offset; | |
35c08157 | 9893 | |
1c8f6a4d KLC |
9894 | /* Get the reloc for the address from which the register is |
9895 | being loaded. This reloc will tell us which function is | |
9896 | actually being called. */ | |
9897 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9898 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 9899 | |
1c8f6a4d KLC |
9900 | if (em_irel == irelend) |
9901 | { | |
695344c0 | 9902 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGCALL6", |
2dcf00ce | 9903 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9904 | return FALSE; |
9905 | } | |
35c08157 | 9906 | |
1c8f6a4d KLC |
9907 | /* Get the value of the symbol referred to by the reloc. */ |
9908 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
9909 | &pic_ext_target); | |
35c08157 | 9910 | |
1c8f6a4d KLC |
9911 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9912 | || foff >= CONSERVATIVE_24BIT_S1) | |
9913 | return FALSE; | |
35c08157 | 9914 | |
1c8f6a4d KLC |
9915 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ |
9916 | insn = bfd_getb32 (contents + irel->r_addend); | |
9917 | if (insn & 0x80000000) | |
9918 | return FALSE; | |
35c08157 | 9919 | |
1c8f6a4d KLC |
9920 | insn = bfd_getb32 (contents + laddr); |
9921 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
9922 | { | |
9923 | /* Relax to bgezal rt, label ; 17_PCREL | |
9924 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 9925 | |
1c8f6a4d KLC |
9926 | /* Convert to complimentary conditional call. */ |
9927 | *insn_len = 0; | |
9928 | insn = CONVERT_CONDITION_CALL (insn); | |
9929 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
9930 | ||
9931 | em_irel->r_info = | |
9932 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA); | |
9933 | ||
9934 | /* Set resolved relocation. */ | |
9935 | cond_irel = | |
9936 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9937 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
9938 | if (cond_irel == irelend) | |
35c08157 | 9939 | { |
695344c0 | 9940 | _bfd_error_handler (unrecognized_reloc_msg, abfd, |
2dcf00ce | 9941 | "R_NDS32_LONGCALL6", (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9942 | return FALSE; |
9943 | } | |
9944 | cond_irel->r_addend = 1; | |
35c08157 | 9945 | |
1c8f6a4d | 9946 | /* Clear relocations. */ |
35c08157 | 9947 | |
1c8f6a4d KLC |
9948 | irel->r_info = |
9949 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 9950 | |
1c8f6a4d KLC |
9951 | cond_irel = |
9952 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9953 | R_NDS32_17_PCREL_RELA, laddr); | |
9954 | if (cond_irel != irelend) | |
9955 | cond_irel->r_info = | |
9956 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 9957 | |
1c8f6a4d KLC |
9958 | cond_irel = |
9959 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9960 | R_NDS32_INSN16, irel->r_addend); | |
9961 | if (cond_irel != irelend) | |
9962 | cond_irel->r_info = | |
9963 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 9964 | |
1c8f6a4d KLC |
9965 | } |
9966 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
9967 | { | |
9968 | /* Relax to the following instruction sequence | |
9969 | bltz rt, .L1 ; LONGCALL2/17_PCREL | |
9970 | jal symbol ; 25_PCREL/PTR_RES | |
9971 | .L1 */ | |
9972 | *insn_len = 4; | |
9973 | /* Convert instruction. */ | |
9974 | insn = INSN_JAL; | |
9975 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 9976 | |
1c8f6a4d KLC |
9977 | /* Convert relocations. */ |
9978 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
9979 | R_NDS32_25_PCREL_RELA); | |
9980 | irel->r_info = | |
9981 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5); | |
35c08157 | 9982 | |
1c8f6a4d KLC |
9983 | /* Set resolved relocation. */ |
9984 | cond_irel = | |
9985 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9986 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
9987 | if (cond_irel == irelend) | |
9988 | { | |
695344c0 | 9989 | _bfd_error_handler (unrecognized_reloc_msg, abfd, |
2dcf00ce | 9990 | "R_NDS32_LONGCALL6", (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
9991 | return FALSE; |
9992 | } | |
9993 | cond_irel->r_addend = 1; | |
35c08157 | 9994 | |
1c8f6a4d KLC |
9995 | cond_irel = |
9996 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9997 | R_NDS32_INSN16, irel->r_addend); | |
9998 | if (cond_irel != irelend) | |
9999 | cond_irel->r_info = | |
10000 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
10001 | } | |
10002 | return TRUE; | |
10003 | } | |
35c08157 | 10004 | |
1c8f6a4d | 10005 | /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */ |
35c08157 | 10006 | |
1c8f6a4d KLC |
10007 | static bfd_boolean |
10008 | nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10009 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10010 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10011 | Elf_Internal_Shdr *symtab_hdr) | |
10012 | { | |
10013 | /* The pattern for LONGJUMP4. | |
10014 | sethi ta, hi20(symbol) ; LONGJUMP4/HI20 | |
10015 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10016 | jr ta ; PTR_RES/INSN16/EMPTY */ | |
10017 | ||
10018 | bfd_vma laddr; | |
10019 | int seq_len; /* Original length of instruction sequence. */ | |
10020 | uint32_t insn; | |
10021 | Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend; | |
10022 | int pic_ext_target = 0; | |
10023 | bfd_signed_vma foff; | |
35c08157 | 10024 | |
1c8f6a4d KLC |
10025 | irelend = internal_relocs + sec->reloc_count; |
10026 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10027 | laddr = irel->r_offset; | |
10028 | *insn_len = seq_len; | |
35c08157 | 10029 | |
1c8f6a4d KLC |
10030 | /* Get the reloc for the address from which the register is |
10031 | being loaded. This reloc will tell us which function is | |
10032 | actually being called. */ | |
35c08157 | 10033 | |
1c8f6a4d KLC |
10034 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10035 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 10036 | |
1c8f6a4d KLC |
10037 | if (hi_irel == irelend) |
10038 | { | |
695344c0 | 10039 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4", |
2dcf00ce | 10040 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10041 | return FALSE; |
10042 | } | |
35c08157 | 10043 | |
1c8f6a4d KLC |
10044 | /* Get the value of the symbol referred to by the reloc. */ |
10045 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
10046 | &pic_ext_target); | |
35c08157 | 10047 | |
1c8f6a4d KLC |
10048 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
10049 | || foff < -CONSERVATIVE_24BIT_S1) | |
10050 | return FALSE; | |
35c08157 | 10051 | |
1c8f6a4d KLC |
10052 | /* Convert it to "j label", it may be converted to j8 in the final |
10053 | pass of relaxation. Therefore, we do not consider this currently. */ | |
10054 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10055 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10056 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10057 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10058 | |
1c8f6a4d KLC |
10059 | if (ptr_irel == irelend || em_irel == irelend) |
10060 | { | |
695344c0 | 10061 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP4", |
2dcf00ce | 10062 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10063 | return FALSE; |
10064 | } | |
35c08157 | 10065 | |
1c8f6a4d KLC |
10066 | em_irel->r_info = |
10067 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA); | |
10068 | ptr_irel->r_addend = 1; | |
35c08157 | 10069 | |
1c8f6a4d KLC |
10070 | /* Write instruction. */ |
10071 | insn = INSN_J; | |
10072 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10073 | |
1c8f6a4d KLC |
10074 | /* Clear relocations. */ |
10075 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10076 | |
1c8f6a4d KLC |
10077 | /* If there is function cse, HI20 can not remove now. */ |
10078 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10079 | R_NDS32_LONGJUMP4, laddr); | |
10080 | if (call_irel == irelend) | |
10081 | { | |
10082 | *insn_len = 0; | |
10083 | hi_irel->r_info = | |
10084 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
10085 | } | |
35c08157 | 10086 | |
1c8f6a4d KLC |
10087 | return TRUE; |
10088 | } | |
35c08157 | 10089 | |
1c8f6a4d | 10090 | /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */ |
35c08157 | 10091 | |
1c8f6a4d KLC |
10092 | static bfd_boolean |
10093 | nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10094 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10095 | int *seq_len, bfd_byte *contents, | |
10096 | Elf_Internal_Sym *isymbuf, | |
10097 | Elf_Internal_Shdr *symtab_hdr) | |
10098 | { | |
10099 | /* There are 2 variations for LONGJUMP5 | |
10100 | case 2-4; 1st insn convertible, 16-bit on. | |
10101 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10102 | j label ; 25_PCREL/INSN16 | |
10103 | $1: | |
10104 | ||
10105 | case 4-4; 1st insn not convertible | |
10106 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10107 | j label ; 25_PCREL/INSN16 | |
10108 | .L1: */ | |
10109 | ||
10110 | bfd_vma laddr; | |
10111 | Elf_Internal_Rela *cond_irel, *irelend; | |
10112 | int pic_ext_target = 0; | |
10113 | unsigned int i; | |
10114 | bfd_signed_vma foff; | |
10115 | uint32_t insn, re_insn = 0; | |
10116 | uint16_t insn16, re_insn16 = 0; | |
10117 | unsigned long reloc; | |
35c08157 | 10118 | |
1c8f6a4d KLC |
10119 | enum elf_nds32_reloc_type checked_types[] = |
10120 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10121 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
35c08157 | 10122 | |
1c8f6a4d KLC |
10123 | irelend = internal_relocs + sec->reloc_count; |
10124 | laddr = irel->r_offset; | |
35c08157 | 10125 | |
1c8f6a4d KLC |
10126 | /* Get the reloc for the address from which the register is |
10127 | being loaded. This reloc will tell us which function is | |
10128 | actually being called. */ | |
35c08157 | 10129 | |
1c8f6a4d KLC |
10130 | cond_irel = |
10131 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10132 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
10133 | if (cond_irel == irelend) | |
10134 | { | |
695344c0 | 10135 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP5", |
2dcf00ce | 10136 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10137 | return FALSE; |
10138 | } | |
35c08157 | 10139 | |
1c8f6a4d KLC |
10140 | /* Get the value of the symbol referred to by the reloc. */ |
10141 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10142 | &pic_ext_target); | |
35c08157 | 10143 | |
1c8f6a4d KLC |
10144 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
10145 | || foff >= CONSERVATIVE_16BIT_S1) | |
10146 | return FALSE; | |
35c08157 | 10147 | |
1c8f6a4d KLC |
10148 | /* Get the all corresponding instructions. */ |
10149 | insn = bfd_getb32 (contents + laddr); | |
10150 | /* Check instruction size. */ | |
10151 | if (insn & 0x80000000) | |
10152 | { | |
10153 | *seq_len = 0; | |
10154 | insn16 = insn >> 16; | |
10155 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10156 | } | |
10157 | else | |
10158 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10159 | |
1c8f6a4d KLC |
10160 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10161 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10162 | { | |
10163 | /* beqs label ; 15_PCREL. */ | |
10164 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10165 | reloc = R_NDS32_15_PCREL_RELA; | |
10166 | } | |
10167 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10168 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10169 | { | |
10170 | /* beqz label ; 17_PCREL. */ | |
10171 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10172 | reloc = R_NDS32_17_PCREL_RELA; | |
10173 | } | |
10174 | else if ( N32_OP6 (re_insn) == N32_OP6_BR3 | |
10175 | && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1) | |
10176 | { | |
10177 | /* beqc label ; 9_PCREL. */ | |
10178 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10179 | reloc = R_NDS32_WORD_9_PCREL_RELA; | |
10180 | } | |
10181 | else | |
10182 | return FALSE; | |
35c08157 | 10183 | |
1c8f6a4d KLC |
10184 | /* Set all relocations. */ |
10185 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc); | |
35c08157 | 10186 | |
1c8f6a4d KLC |
10187 | /* Clean relocations. */ |
10188 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10189 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
10190 | { | |
10191 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10192 | checked_types[i], laddr); | |
10193 | if (cond_irel != irelend) | |
10194 | { | |
10195 | if (*seq_len == 0 | |
10196 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
35c08157 | 10197 | { |
1c8f6a4d KLC |
10198 | /* If the branch instruction is 2 byte, it cannot remove |
10199 | directly. Only convert it to nop16 and remove it after | |
10200 | checking alignment issue. */ | |
10201 | insn16 = NDS32_NOP16; | |
10202 | bfd_putb16 (insn16, contents + laddr); | |
10203 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 KLC |
10204 | } |
10205 | else | |
1c8f6a4d KLC |
10206 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
10207 | R_NDS32_NONE); | |
35c08157 | 10208 | } |
1c8f6a4d KLC |
10209 | } |
10210 | *insn_len = 0; | |
35c08157 | 10211 | |
1c8f6a4d KLC |
10212 | return TRUE; |
10213 | } | |
35c08157 | 10214 | |
1c8f6a4d | 10215 | /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */ |
35c08157 | 10216 | |
1c8f6a4d KLC |
10217 | static bfd_boolean |
10218 | nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10219 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10220 | int *seq_len, bfd_byte *contents, | |
10221 | Elf_Internal_Sym *isymbuf, | |
10222 | Elf_Internal_Shdr *symtab_hdr) | |
10223 | { | |
10224 | /* There are 5 variations for LONGJUMP6 | |
10225 | case : 2-4-4-4; 1st insn convertible, 16-bit on. | |
10226 | bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10227 | sethi ta, hi20(symbol) ; HI20/PTR | |
10228 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10229 | jr ta ; PTR_RES/INSN16/EMPTY | |
10230 | .L1: | |
10231 | ||
10232 | case : 4-4-4-4; 1st insn not convertible, 16-bit on. | |
10233 | bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10234 | sethi ta, hi20(symbol) ; HI20/PTR | |
10235 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10236 | jr ta ; PTR_RES/INSN16/EMPTY | |
10237 | .L1: */ | |
10238 | ||
10239 | enum elf_nds32_reloc_type checked_types[] = | |
10240 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10241 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
10242 | ||
10243 | int reloc_off = 0, cond_removed = 0; | |
10244 | bfd_vma laddr; | |
10245 | Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel; | |
10246 | int pic_ext_target = 0; | |
10247 | unsigned int i; | |
10248 | bfd_signed_vma foff; | |
10249 | uint32_t insn, re_insn = 0; | |
10250 | uint16_t insn16, re_insn16 = 0; | |
10251 | unsigned long reloc; | |
35c08157 | 10252 | |
1c8f6a4d KLC |
10253 | irelend = internal_relocs + sec->reloc_count; |
10254 | laddr = irel->r_offset; | |
35c08157 | 10255 | |
1c8f6a4d KLC |
10256 | /* Get the reloc for the address from which the register is |
10257 | being loaded. This reloc will tell us which function is | |
10258 | actually being called. */ | |
10259 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10260 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10261 | |
1c8f6a4d KLC |
10262 | if (em_irel == irelend) |
10263 | { | |
695344c0 | 10264 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP6", |
2dcf00ce | 10265 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10266 | return FALSE; |
10267 | } | |
35c08157 | 10268 | |
1c8f6a4d KLC |
10269 | /* Get the value of the symbol referred to by the reloc. */ |
10270 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
10271 | &pic_ext_target); | |
35c08157 | 10272 | |
1c8f6a4d KLC |
10273 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
10274 | || foff >= CONSERVATIVE_24BIT_S1) | |
10275 | return FALSE; | |
35c08157 | 10276 | |
1c8f6a4d KLC |
10277 | insn = bfd_getb32 (contents + laddr); |
10278 | /* Check instruction size. */ | |
10279 | if (insn & 0x80000000) | |
10280 | { | |
10281 | *seq_len = 0; | |
10282 | insn16 = insn >> 16; | |
10283 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10284 | } | |
10285 | else | |
10286 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10287 | |
1c8f6a4d KLC |
10288 | /* For simplicity of coding, we are going to modify the section |
10289 | contents, the section relocs, and the BFD symbol table. We | |
10290 | must tell the rest of the code not to free up this | |
10291 | information. It would be possible to instead create a table | |
10292 | of changes which have to be made, as is done in coff-mips.c; | |
10293 | that would be more work, but would require less memory when | |
10294 | the linker is run. */ | |
35c08157 | 10295 | |
1c8f6a4d KLC |
10296 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10297 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10298 | { | |
10299 | /* beqs label ; 15_PCREL */ | |
10300 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10301 | reloc = R_NDS32_15_PCREL_RELA; | |
10302 | cond_removed = 1; | |
10303 | } | |
10304 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10305 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10306 | { | |
10307 | /* beqz label ; 17_PCREL */ | |
10308 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10309 | reloc = R_NDS32_17_PCREL_RELA; | |
10310 | cond_removed = 1; | |
10311 | } | |
10312 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
10313 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
10314 | { | |
10315 | /* Relax to one of the following 2 variations | |
35c08157 | 10316 | |
1c8f6a4d KLC |
10317 | case 2-4; 1st insn convertible, 16-bit on. |
10318 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10319 | j label ; 25_PCREL/INSN16 | |
10320 | $1: | |
35c08157 | 10321 | |
1c8f6a4d KLC |
10322 | case 4-4; 1st insn not convertible |
10323 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10324 | j label ; 25_PCREL/INSN16 | |
10325 | .L1: */ | |
35c08157 | 10326 | |
1c8f6a4d KLC |
10327 | /* Use j label as second instruction. */ |
10328 | insn = INSN_J; | |
10329 | reloc = R_NDS32_25_PCREL_RELA; | |
10330 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
10331 | } | |
10332 | else | |
10333 | return FALSE; | |
35c08157 | 10334 | |
1c8f6a4d KLC |
10335 | /* Set all relocations. */ |
10336 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc); | |
35c08157 | 10337 | |
1c8f6a4d KLC |
10338 | cond_irel = |
10339 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10340 | R_NDS32_PTR_RESOLVED, em_irel->r_offset); | |
10341 | cond_irel->r_addend = 1; | |
35c08157 | 10342 | |
1c8f6a4d KLC |
10343 | /* Use INSN16 of first branch instruction to distinguish if keeping |
10344 | INSN16 of final instruction or not. */ | |
10345 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10346 | R_NDS32_INSN16, irel->r_offset); | |
10347 | if (insn_irel == irelend) | |
10348 | { | |
10349 | /* Clean the final INSN16. */ | |
10350 | insn_irel = | |
10351 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10352 | R_NDS32_INSN16, em_irel->r_offset); | |
10353 | insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10354 | R_NDS32_NONE); | |
10355 | } | |
10356 | ||
10357 | if (cond_removed == 1) | |
10358 | { | |
10359 | *insn_len = 0; | |
10360 | ||
10361 | /* Clear relocations. */ | |
10362 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10363 | |
1c8f6a4d KLC |
10364 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
10365 | { | |
10366 | cond_irel = | |
10367 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10368 | checked_types[i], laddr); | |
10369 | if (cond_irel != irelend) | |
35c08157 | 10370 | { |
1c8f6a4d KLC |
10371 | if (*seq_len == 0 |
10372 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
10373 | { | |
10374 | /* If the branch instruction is 2 byte, it cannot remove | |
10375 | directly. Only convert it to nop16 and remove it after | |
10376 | checking alignment issue. */ | |
10377 | insn16 = NDS32_NOP16; | |
10378 | bfd_putb16 (insn16, contents + laddr); | |
10379 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
10380 | } | |
10381 | else | |
10382 | cond_irel->r_info = | |
10383 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10384 | } |
35c08157 | 10385 | } |
1c8f6a4d KLC |
10386 | } |
10387 | else | |
10388 | { | |
10389 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
10390 | R_NDS32_LONGJUMP5); | |
10391 | } | |
35c08157 | 10392 | |
1c8f6a4d KLC |
10393 | return TRUE; |
10394 | } | |
35c08157 | 10395 | |
1c8f6a4d | 10396 | /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */ |
35c08157 | 10397 | |
1c8f6a4d KLC |
10398 | static bfd_boolean |
10399 | nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10400 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10401 | int *seq_len, bfd_byte *contents, | |
10402 | Elf_Internal_Sym *isymbuf, | |
10403 | Elf_Internal_Shdr *symtab_hdr) | |
10404 | { | |
10405 | /* There are 2 variations for LONGJUMP5 | |
10406 | case 2-4; 1st insn convertible, 16-bit on. | |
10407 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10408 | beq rt, ta, label ; 15_PCREL | |
10409 | ||
10410 | case 4-4; 1st insn not convertible | |
10411 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10412 | beq rt, ta, label ; 15_PCREL */ | |
10413 | ||
10414 | bfd_vma laddr; | |
10415 | Elf_Internal_Rela *cond_irel, *irelend, *insn_irel; | |
10416 | int pic_ext_target = 0; | |
10417 | bfd_signed_vma foff; | |
10418 | uint32_t insn, re_insn = 0; | |
10419 | uint16_t insn16; | |
10420 | uint32_t imm11; | |
35c08157 | 10421 | |
1c8f6a4d KLC |
10422 | irelend = internal_relocs + sec->reloc_count; |
10423 | laddr = irel->r_offset; | |
35c08157 | 10424 | |
1c8f6a4d KLC |
10425 | /* Get the reloc for the address from which the register is |
10426 | being loaded. This reloc will tell us which function is | |
10427 | actually being called. */ | |
35c08157 | 10428 | |
1c8f6a4d KLC |
10429 | cond_irel = |
10430 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10431 | R_NDS32_15_PCREL_RELA, irel->r_addend); | |
10432 | if (cond_irel == irelend) | |
10433 | { | |
695344c0 | 10434 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LONGJUMP7", |
2dcf00ce | 10435 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10436 | return FALSE; |
10437 | } | |
35c08157 | 10438 | |
1c8f6a4d KLC |
10439 | /* Get the value of the symbol referred to by the reloc. */ |
10440 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10441 | &pic_ext_target); | |
35c08157 | 10442 | |
1c8f6a4d KLC |
10443 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1 |
10444 | || foff >= CONSERVATIVE_8BIT_S1) | |
10445 | return FALSE; | |
35c08157 | 10446 | |
1c8f6a4d KLC |
10447 | /* Get the first instruction for its size. */ |
10448 | insn = bfd_getb32 (contents + laddr); | |
10449 | if (insn & 0x80000000) | |
10450 | { | |
10451 | *seq_len = 0; | |
10452 | /* Get the immediate from movi55. */ | |
10453 | imm11 = N16_IMM5S (insn >> 16); | |
10454 | } | |
10455 | else | |
10456 | { | |
10457 | /* Get the immediate from movi. */ | |
10458 | imm11 = N32_IMM20S (insn); | |
35c08157 KLC |
10459 | } |
10460 | ||
1c8f6a4d KLC |
10461 | /* Get the branch instruction. */ |
10462 | insn = bfd_getb32 (contents + irel->r_addend); | |
10463 | /* Convert instruction to BR3. */ | |
10464 | if ((insn >> 14) & 0x1) | |
10465 | re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0); | |
10466 | else | |
10467 | re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0); | |
35c08157 | 10468 | |
1c8f6a4d | 10469 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
35c08157 | 10470 | |
1c8f6a4d KLC |
10471 | /* Set all relocations. */ |
10472 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10473 | R_NDS32_WORD_9_PCREL_RELA); | |
10474 | ||
10475 | /* Clean relocations. */ | |
10476 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10477 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10478 | R_NDS32_INSN16, irel->r_offset); | |
10479 | if (insn_irel != irelend) | |
10480 | { | |
10481 | if (*seq_len == 0) | |
35c08157 | 10482 | { |
1c8f6a4d KLC |
10483 | /* If the first insntruction is 16bit, convert it to nop16. */ |
10484 | insn16 = NDS32_NOP16; | |
10485 | bfd_putb16 (insn16, contents + laddr); | |
10486 | insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 | 10487 | } |
1c8f6a4d KLC |
10488 | else |
10489 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10490 | R_NDS32_NONE); | |
35c08157 | 10491 | } |
1c8f6a4d | 10492 | *insn_len = 0; |
35c08157 | 10493 | |
1c8f6a4d KLC |
10494 | return TRUE; |
10495 | } | |
35c08157 | 10496 | |
1c8f6a4d | 10497 | #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f) |
35c08157 | 10498 | |
1c8f6a4d | 10499 | /* Relax LOADSTORE relocation for nds32_elf_relax_section. */ |
35c08157 | 10500 | |
1c8f6a4d KLC |
10501 | static bfd_boolean |
10502 | nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd, | |
10503 | asection *sec, Elf_Internal_Rela *irel, | |
10504 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10505 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10506 | Elf_Internal_Shdr *symtab_hdr, int load_store_relax) | |
10507 | { | |
6cae483a AM |
10508 | int eliminate_sethi = 0, range_type; |
10509 | unsigned int i; | |
1c8f6a4d KLC |
10510 | bfd_vma local_sda, laddr; |
10511 | int seq_len; /* Original length of instruction sequence. */ | |
10512 | uint32_t insn; | |
10513 | Elf_Internal_Rela *hi_irelfn = NULL, *irelend; | |
10514 | bfd_vma access_addr = 0; | |
10515 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10516 | enum elf_nds32_reloc_type checked_types[] = | |
10517 | { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20, | |
10518 | R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20, | |
10519 | R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20, | |
10520 | R_NDS32_TLS_LE_HI20 | |
10521 | }; | |
35c08157 | 10522 | |
1c8f6a4d KLC |
10523 | irelend = internal_relocs + sec->reloc_count; |
10524 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10525 | laddr = irel->r_offset; | |
10526 | *insn_len = seq_len; | |
35c08157 | 10527 | |
1c8f6a4d | 10528 | /* Get the high part relocation. */ |
6cae483a | 10529 | for (i = 0; i < ARRAY_SIZE (checked_types); i++) |
1c8f6a4d KLC |
10530 | { |
10531 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10532 | checked_types[i], laddr); | |
10533 | if (hi_irelfn != irelend) | |
10534 | break; | |
10535 | } | |
35c08157 | 10536 | |
1c8f6a4d KLC |
10537 | if (hi_irelfn == irelend) |
10538 | { | |
695344c0 | 10539 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_LOADSTORE", |
2dcf00ce | 10540 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
10541 | return FALSE; |
10542 | } | |
35c08157 | 10543 | |
1c8f6a4d KLC |
10544 | range_type = GET_LOADSTORE_RANGE (irel->r_addend); |
10545 | nds32_elf_final_sda_base (sec->output_section->owner, | |
10546 | link_info, &local_sda, FALSE); | |
35c08157 | 10547 | |
1c8f6a4d KLC |
10548 | switch (ELF32_R_TYPE (hi_irelfn->r_info)) |
10549 | { | |
10550 | case R_NDS32_HI20_RELA: | |
10551 | insn = bfd_getb32 (contents + laddr); | |
10552 | access_addr = | |
10553 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10554 | ||
10555 | if (range_type == NDS32_LOADSTORE_IMM) | |
10556 | { | |
10557 | struct elf_link_hash_entry *h = NULL; | |
10558 | int indx; | |
35c08157 | 10559 | |
1c8f6a4d | 10560 | if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info) |
35c08157 | 10561 | { |
1c8f6a4d KLC |
10562 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
10563 | h = elf_sym_hashes (abfd)[indx]; | |
35c08157 | 10564 | } |
35c08157 | 10565 | |
1c8f6a4d KLC |
10566 | if ((access_addr < CONSERVATIVE_20BIT) |
10567 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
35c08157 | 10568 | { |
1c8f6a4d KLC |
10569 | eliminate_sethi = 1; |
10570 | break; | |
35c08157 | 10571 | } |
1c8f6a4d KLC |
10572 | |
10573 | /* This is avoid to relax symbol address which is fixed | |
10574 | relocations. Ex: _stack. */ | |
10575 | if (h && bfd_is_abs_section (h->root.u.def.section)) | |
10576 | return FALSE; | |
10577 | } | |
10578 | ||
10579 | if (!load_store_relax) | |
10580 | return FALSE; | |
10581 | ||
10582 | /* Case for set gp register. */ | |
10583 | if (N32_RT5 (insn) == REG_GP) | |
10584 | break; | |
10585 | ||
10586 | if (range_type == NDS32_LOADSTORE_FLOAT_S | |
6cef73f9 | 10587 | || range_type == NDS32_LOADSTORE_FLOAT_D) |
1c8f6a4d KLC |
10588 | { |
10589 | range_l = sdata_range[0][0]; | |
10590 | range_h = sdata_range[0][1]; | |
10591 | } | |
10592 | else | |
10593 | { | |
10594 | range_l = sdata_range[1][0]; | |
10595 | range_h = sdata_range[1][1]; | |
10596 | } | |
10597 | break; | |
10598 | ||
10599 | case R_NDS32_GOT_HI20: | |
10600 | access_addr = | |
10601 | calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr); | |
10602 | ||
10603 | /* If this symbol is not in .got, the return value will be -1. | |
10604 | Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE, | |
10605 | a negative offset is allowed. */ | |
10606 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10607 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10608 | eliminate_sethi = 1; | |
10609 | break; | |
10610 | ||
10611 | case R_NDS32_PLT_GOTREL_HI20: | |
10612 | access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf, | |
10613 | hi_irelfn, symtab_hdr); | |
10614 | ||
10615 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10616 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10617 | eliminate_sethi = 1; | |
10618 | break; | |
10619 | ||
10620 | case R_NDS32_GOTOFF_HI20: | |
10621 | access_addr = | |
10622 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10623 | ||
10624 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10625 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10626 | eliminate_sethi = 1; | |
10627 | break; | |
10628 | ||
10629 | case R_NDS32_GOTPC_HI20: | |
10630 | /* The access_addr must consider r_addend of hi_irel. */ | |
10631 | access_addr = sec->output_section->vma + sec->output_offset | |
10632 | + irel->r_offset + hi_irelfn->r_addend; | |
10633 | ||
10634 | if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT | |
10635 | && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT) | |
10636 | eliminate_sethi = 1; | |
10637 | break; | |
10638 | ||
10639 | case R_NDS32_TLS_LE_HI20: | |
10640 | access_addr = | |
10641 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10642 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10643 | access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10644 | if ((range_type == NDS32_LOADSTORE_IMM) | |
10645 | && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT | |
10646 | && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT) | |
10647 | eliminate_sethi = 1; | |
10648 | break; | |
10649 | ||
10650 | default: | |
10651 | return FALSE; | |
10652 | } | |
10653 | ||
10654 | /* Delete sethi instruction. */ | |
10655 | if (eliminate_sethi == 1 | |
10656 | || (local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
10657 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
10658 | { | |
10659 | hi_irelfn->r_info = | |
10660 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
10661 | irel->r_info = | |
10662 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10663 | *insn_len = 0; | |
10664 | } | |
10665 | return TRUE; | |
10666 | } | |
10667 | ||
10668 | /* Relax LO12 relocation for nds32_elf_relax_section. */ | |
10669 | ||
10670 | static void | |
10671 | nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd, | |
10672 | asection *sec, Elf_Internal_Rela *irel, | |
10673 | Elf_Internal_Rela *internal_relocs, bfd_byte *contents, | |
10674 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr) | |
10675 | { | |
10676 | uint32_t insn; | |
10677 | bfd_vma local_sda, laddr; | |
10678 | unsigned long reloc; | |
10679 | bfd_vma access_addr; | |
10680 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10681 | Elf_Internal_Rela *irelfn = NULL, *irelend; | |
10682 | struct elf_link_hash_entry *h = NULL; | |
10683 | int indx; | |
10684 | ||
10685 | /* For SDA base relative relaxation. */ | |
10686 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
10687 | &local_sda, FALSE); | |
10688 | ||
10689 | irelend = internal_relocs + sec->reloc_count; | |
10690 | laddr = irel->r_offset; | |
10691 | insn = bfd_getb32 (contents + laddr); | |
10692 | ||
10693 | if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI) | |
10694 | return; | |
10695 | ||
10696 | access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10697 | ||
10698 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) | |
10699 | { | |
10700 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
10701 | h = elf_sym_hashes (abfd)[indx]; | |
10702 | } | |
10703 | ||
10704 | if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT | |
10705 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
10706 | { | |
10707 | reloc = R_NDS32_20_RELA; | |
10708 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10709 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
10710 | bfd_putb32 (insn, contents + laddr); | |
10711 | } | |
10712 | /* This is avoid to relax symbol address which is fixed | |
10713 | relocations. Ex: _stack. */ | |
10714 | else if (N32_OP6 (insn) == N32_OP6_ORI | |
10715 | && h && bfd_is_abs_section (h->root.u.def.section)) | |
10716 | return; | |
10717 | else | |
10718 | { | |
10719 | range_l = sdata_range[1][0]; | |
10720 | range_h = sdata_range[1][1]; | |
10721 | switch (ELF32_R_TYPE (irel->r_info)) | |
10722 | { | |
10723 | case R_NDS32_LO12S0_RELA: | |
10724 | reloc = R_NDS32_SDA19S0_RELA; | |
10725 | break; | |
10726 | case R_NDS32_LO12S1_RELA: | |
10727 | reloc = R_NDS32_SDA18S1_RELA; | |
10728 | break; | |
10729 | case R_NDS32_LO12S2_RELA: | |
10730 | reloc = R_NDS32_SDA17S2_RELA; | |
10731 | break; | |
10732 | case R_NDS32_LO12S2_DP_RELA: | |
10733 | range_l = sdata_range[0][0]; | |
10734 | range_h = sdata_range[0][1]; | |
10735 | reloc = R_NDS32_SDA12S2_DP_RELA; | |
10736 | break; | |
10737 | case R_NDS32_LO12S2_SP_RELA: | |
10738 | range_l = sdata_range[0][0]; | |
10739 | range_h = sdata_range[0][1]; | |
10740 | reloc = R_NDS32_SDA12S2_SP_RELA; | |
10741 | break; | |
10742 | default: | |
10743 | return; | |
10744 | } | |
10745 | ||
10746 | /* There are range_h and range_l because linker has to promise | |
10747 | all sections move cross one page together. */ | |
10748 | if ((local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
10749 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
10750 | { | |
10751 | if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP) | |
35c08157 | 10752 | { |
1c8f6a4d KLC |
10753 | /* Maybe we should add R_NDS32_INSN16 reloc type here |
10754 | or manually do some optimization. sethi can't be | |
10755 | eliminated when updating $gp so the relative ori | |
10756 | needs to be preserved. */ | |
10757 | return; | |
35c08157 | 10758 | } |
1c8f6a4d KLC |
10759 | if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info), |
10760 | &insn)) | |
10761 | return; | |
10762 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10763 | bfd_putb32 (insn, contents + laddr); | |
10764 | ||
10765 | irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
10766 | R_NDS32_INSN16); | |
10767 | /* SDA17 must keep INSN16 for converting fp_as_gp. */ | |
10768 | if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA) | |
10769 | irelfn->r_info = | |
10770 | ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE); | |
10771 | ||
35c08157 | 10772 | } |
1c8f6a4d KLC |
10773 | } |
10774 | return; | |
10775 | } | |
35c08157 | 10776 | |
1c8f6a4d KLC |
10777 | /* Relax low part of PIC instruction pattern. */ |
10778 | ||
10779 | static void | |
10780 | nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd, | |
10781 | asection *sec, Elf_Internal_Rela *irel, | |
10782 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10783 | Elf_Internal_Shdr *symtab_hdr) | |
10784 | { | |
10785 | uint32_t insn; | |
10786 | bfd_vma local_sda, laddr; | |
10787 | bfd_signed_vma foff; | |
10788 | unsigned long reloc; | |
10789 | ||
10790 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
10791 | &local_sda, FALSE); | |
10792 | laddr = irel->r_offset; | |
10793 | insn = bfd_getb32 (contents + laddr); | |
10794 | ||
10795 | if (N32_OP6 (insn) != N32_OP6_ORI) | |
10796 | return; | |
10797 | ||
10798 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12) | |
10799 | { | |
10800 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
10801 | symtab_hdr) - local_sda; | |
10802 | reloc = R_NDS32_GOT20; | |
10803 | } | |
10804 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12) | |
10805 | { | |
10806 | foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
10807 | symtab_hdr) - local_sda; | |
10808 | reloc = R_NDS32_PLT_GOTREL_LO20; | |
10809 | } | |
10810 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12) | |
10811 | { | |
10812 | foff = calculate_memory_address (abfd, irel, isymbuf, | |
10813 | symtab_hdr) - local_sda; | |
10814 | reloc = R_NDS32_GOTOFF; | |
10815 | } | |
10816 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12) | |
10817 | { | |
10818 | foff = local_sda - sec->output_section->vma + sec->output_offset | |
10819 | + irel->r_offset + irel->r_addend; | |
10820 | reloc = R_NDS32_GOTPC20; | |
10821 | } | |
10822 | else | |
10823 | return; | |
10824 | ||
10825 | if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT)) | |
10826 | { | |
10827 | /* Turn into MOVI. */ | |
10828 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10829 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
10830 | bfd_putb32 (insn, contents + laddr); | |
10831 | } | |
10832 | } | |
10833 | ||
10834 | /* Relax low part of LE TLS instruction pattern. */ | |
10835 | ||
10836 | static void | |
10837 | nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd, | |
10838 | Elf_Internal_Rela *irel, | |
10839 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10840 | Elf_Internal_Shdr *symtab_hdr) | |
10841 | { | |
10842 | uint32_t insn; | |
10843 | bfd_vma laddr; | |
10844 | bfd_signed_vma foff; | |
10845 | unsigned long reloc; | |
10846 | ||
10847 | laddr = irel->r_offset; | |
10848 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10849 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10850 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10851 | insn = bfd_getb32 (contents + laddr); | |
10852 | ||
10853 | if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT | |
10854 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT) | |
10855 | { | |
10856 | /* Pattern sethi-ori transform to movi. */ | |
10857 | reloc = R_NDS32_TLS_LE_20; | |
10858 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10859 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
10860 | bfd_putb32 (insn, contents + laddr); | |
10861 | } | |
10862 | } | |
10863 | ||
10864 | /* Relax LE TLS calculate address instruction pattern. */ | |
10865 | ||
10866 | static void | |
10867 | nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd, | |
10868 | asection *sec, Elf_Internal_Rela *irel, | |
10869 | Elf_Internal_Rela *internal_relocs, | |
10870 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10871 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
10872 | { | |
10873 | /* Local TLS non-pic | |
07d6d2b8 | 10874 | sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20 |
1c8f6a4d | 10875 | ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12 |
07d6d2b8 | 10876 | add ra, ta, tp ; TLS_LE_ADD */ |
1c8f6a4d KLC |
10877 | |
10878 | uint32_t insn; | |
10879 | bfd_vma laddr; | |
10880 | bfd_signed_vma foff; | |
10881 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
10882 | ||
10883 | irelend = internal_relocs + sec->reloc_count; | |
10884 | laddr = irel->r_offset; | |
10885 | insn = bfd_getb32 (contents + laddr); | |
10886 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
10887 | R_NDS32_PTR_RESOLVED); | |
10888 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10889 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10890 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10891 | ||
10892 | /* The range is +/-16k. */ | |
10893 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
10894 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
10895 | { | |
10896 | /* Transform add to addi. */ | |
10897 | insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0); | |
10898 | irel->r_info = | |
10899 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
10900 | ||
10901 | bfd_putb32 (insn, contents + laddr); | |
10902 | if (i1_irelfn != irelend) | |
10903 | { | |
10904 | i1_irelfn->r_addend |= 1; | |
10905 | *again = TRUE; | |
10906 | } | |
10907 | } | |
10908 | } | |
10909 | ||
10910 | /* Relax LE TLS load store instruction pattern. */ | |
10911 | ||
10912 | static void | |
10913 | nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd, | |
10914 | asection *sec, Elf_Internal_Rela *irel, | |
10915 | Elf_Internal_Rela *internal_relocs, | |
10916 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10917 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
10918 | { | |
10919 | ||
10920 | uint32_t insn; | |
10921 | bfd_vma laddr; | |
10922 | bfd_signed_vma foff; | |
10923 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
10924 | int success = 0; | |
10925 | ||
10926 | irelend = internal_relocs + sec->reloc_count; | |
10927 | laddr = irel->r_offset; | |
10928 | insn = bfd_getb32 (contents + laddr); | |
10929 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
10930 | R_NDS32_PTR_RESOLVED); | |
10931 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10932 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10933 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10934 | ||
10935 | switch ((N32_OP6 (insn) << 8) | (insn & 0xff)) | |
10936 | { | |
10937 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
10938 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
10939 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
10940 | /* The range is +/-16k. */ | |
10941 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
10942 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
10943 | { | |
10944 | insn = | |
10945 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
10946 | irel->r_info = | |
10947 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
10948 | success = 1; | |
10949 | break; | |
10950 | } | |
1a0670f3 | 10951 | /* Fall through. */ |
1c8f6a4d KLC |
10952 | case (N32_OP6_MEM << 8) | N32_MEM_LH: |
10953 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
10954 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
10955 | /* The range is +/-32k. */ | |
10956 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1 | |
10957 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1) | |
35c08157 | 10958 | { |
1c8f6a4d KLC |
10959 | insn = |
10960 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
10961 | irel->r_info = | |
10962 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1); | |
10963 | success = 1; | |
10964 | break; | |
10965 | } | |
1a0670f3 | 10966 | /* Fall through. */ |
1c8f6a4d KLC |
10967 | case (N32_OP6_MEM << 8) | N32_MEM_LW: |
10968 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
10969 | /* The range is +/-64k. */ | |
10970 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2 | |
10971 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2) | |
10972 | { | |
10973 | insn = | |
10974 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
10975 | irel->r_info = | |
10976 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2); | |
10977 | success = 1; | |
10978 | break; | |
10979 | } | |
1a0670f3 | 10980 | /* Fall through. */ |
1c8f6a4d KLC |
10981 | default: |
10982 | break; | |
10983 | } | |
35c08157 | 10984 | |
1c8f6a4d KLC |
10985 | if (success) |
10986 | { | |
10987 | bfd_putb32 (insn, contents + laddr); | |
10988 | if (i1_irelfn != irelend) | |
10989 | { | |
10990 | i1_irelfn->r_addend |= 1; | |
10991 | *again = TRUE; | |
10992 | } | |
10993 | } | |
10994 | } | |
35c08157 | 10995 | |
1c8f6a4d | 10996 | /* Relax PTR relocation for nds32_elf_relax_section. */ |
35c08157 | 10997 | |
1c8f6a4d KLC |
10998 | static bfd_boolean |
10999 | nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
11000 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
11001 | int *seq_len, bfd_byte *contents) | |
11002 | { | |
11003 | Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel; | |
35c08157 | 11004 | |
1c8f6a4d | 11005 | irelend = internal_relocs + sec->reloc_count; |
35c08157 | 11006 | |
1c8f6a4d KLC |
11007 | re_irel = |
11008 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
11009 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
35c08157 | 11010 | |
1c8f6a4d KLC |
11011 | if (re_irel == irelend) |
11012 | { | |
695344c0 | 11013 | _bfd_error_handler (unrecognized_reloc_msg, abfd, "R_NDS32_PTR", |
2dcf00ce | 11014 | (uint64_t) irel->r_offset); |
1c8f6a4d KLC |
11015 | return FALSE; |
11016 | } | |
35c08157 | 11017 | |
1c8f6a4d KLC |
11018 | if (re_irel->r_addend != 1) |
11019 | return FALSE; | |
35c08157 | 11020 | |
1c8f6a4d KLC |
11021 | /* Pointed target is relaxed and no longer needs this void *, |
11022 | change the type to NONE. */ | |
11023 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 11024 | |
1c8f6a4d KLC |
11025 | /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does |
11026 | not exist, it means only count 1 and remove it directly. */ | |
11027 | /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */ | |
11028 | count_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11029 | R_NDS32_PTR_COUNT); | |
11030 | ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11031 | R_NDS32_PTR); | |
11032 | if (count_irel != irelend) | |
11033 | { | |
11034 | if (--count_irel->r_addend > 0) | |
11035 | return FALSE; | |
11036 | } | |
11037 | ||
11038 | if (ptr_irel != irelend) | |
11039 | return FALSE; | |
11040 | ||
11041 | /* If the PTR_COUNT is already 0, remove current instruction. */ | |
11042 | *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset); | |
11043 | *insn_len = 0; | |
11044 | return TRUE; | |
11045 | } | |
11046 | ||
11047 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11048 | ||
11049 | static void | |
11050 | nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11051 | asection *sec, Elf_Internal_Rela *irel, | |
11052 | Elf_Internal_Rela *internal_relocs, | |
11053 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11054 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11055 | { | |
11056 | uint32_t insn; | |
11057 | bfd_signed_vma foff; | |
11058 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11059 | bfd_vma local_sda, laddr; | |
11060 | ||
11061 | irelend = internal_relocs + sec->reloc_count; | |
11062 | laddr = irel->r_offset; | |
11063 | insn = bfd_getb32 (contents + laddr); | |
11064 | ||
11065 | /* FIXME: It's a little trouble to turn JRAL5 to JAL since | |
11066 | we need additional space. It might be help if we could | |
11067 | borrow some space from instructions to be eliminated | |
11068 | such as sethi, ori, add. */ | |
11069 | if (insn & 0x80000000) | |
11070 | return; | |
11071 | ||
11072 | if (nds32_elf_check_dup_relocs | |
11073 | (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF)) | |
11074 | return; | |
11075 | ||
11076 | i1_irelfn = | |
11077 | find_relocs_at_address (irel, internal_relocs, irelend, | |
11078 | R_NDS32_PTR_RESOLVED); | |
11079 | ||
11080 | /* FIXIT 090606 | |
11081 | The boundary should be reduced since the .plt section hasn't | |
11082 | been created and the address of specific entry is still unknown | |
11083 | Maybe the range between the function call and the begin of the | |
11084 | .text section can be used to decide if the .plt is in the range | |
11085 | of function call. */ | |
11086 | ||
11087 | if (N32_OP6 (insn) == N32_OP6_ALU1 | |
11088 | && N32_SUB5 (insn) == N32_ALU1_ADD) | |
11089 | { | |
11090 | /* Get the value of the symbol referred to by the reloc. */ | |
11091 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11092 | &local_sda, FALSE); | |
11093 | foff = (bfd_signed_vma) (calculate_plt_memory_address | |
11094 | (abfd, link_info, isymbuf, irel, | |
11095 | symtab_hdr) - local_sda); | |
11096 | /* This condition only happened when symbol is undefined. */ | |
11097 | if (foff == 0) | |
11098 | return; | |
11099 | ||
11100 | if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT) | |
11101 | return; | |
11102 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11103 | R_NDS32_PLT_GOTREL_LO19); | |
11104 | /* addi.gp */ | |
4ec521f2 | 11105 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19)); |
1c8f6a4d KLC |
11106 | } |
11107 | else if (N32_OP6 (insn) == N32_OP6_JREG | |
11108 | && N32_SUB5 (insn) == N32_JREG_JRAL) | |
11109 | { | |
11110 | /* Get the value of the symbol referred to by the reloc. */ | |
11111 | foff = | |
11112 | calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr); | |
11113 | /* This condition only happened when symbol is undefined. */ | |
11114 | if (foff == 0) | |
11115 | return; | |
11116 | if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1) | |
11117 | return; | |
11118 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL); | |
11119 | insn = INSN_JAL; | |
11120 | } | |
11121 | else | |
11122 | return; | |
11123 | ||
11124 | bfd_putb32 (insn, contents + laddr); | |
11125 | if (i1_irelfn != irelend) | |
11126 | { | |
11127 | i1_irelfn->r_addend |= 1; | |
11128 | *again = TRUE; | |
11129 | } | |
11130 | } | |
11131 | ||
11132 | /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11133 | ||
11134 | static void | |
11135 | nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11136 | asection *sec, Elf_Internal_Rela *irel, | |
11137 | Elf_Internal_Rela *internal_relocs, | |
11138 | bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr, | |
11139 | bfd_boolean *again) | |
11140 | { | |
11141 | uint32_t insn; | |
11142 | bfd_signed_vma foff; | |
11143 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11144 | bfd_vma local_sda, laddr; | |
11145 | ||
11146 | irelend = internal_relocs + sec->reloc_count; | |
11147 | laddr = irel->r_offset; | |
11148 | insn = bfd_getb32 (contents + laddr); | |
11149 | if (insn & 0x80000000) | |
11150 | return; | |
11151 | ||
11152 | if (nds32_elf_check_dup_relocs | |
11153 | (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF)) | |
11154 | return; | |
11155 | ||
11156 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11157 | R_NDS32_PTR_RESOLVED); | |
11158 | ||
11159 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11160 | &local_sda, FALSE); | |
11161 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
11162 | symtab_hdr) - local_sda; | |
11163 | ||
11164 | if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT) | |
11165 | { | |
11166 | /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */ | |
11167 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11168 | irel->r_info = | |
11169 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA); | |
11170 | bfd_putb32 (insn, contents + laddr); | |
11171 | if (i1_irelfn != irelend) | |
11172 | { | |
11173 | i1_irelfn->r_addend |= 1; | |
11174 | *again = TRUE; | |
11175 | } | |
11176 | } | |
11177 | } | |
11178 | ||
11179 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11180 | ||
11181 | static void | |
11182 | nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11183 | asection *sec, Elf_Internal_Rela *irel, | |
11184 | Elf_Internal_Rela *internal_relocs, | |
11185 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11186 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11187 | { | |
11188 | int opc_insn_gotoff; | |
11189 | uint32_t insn; | |
11190 | bfd_signed_vma foff; | |
11191 | Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend; | |
11192 | bfd_vma local_sda, laddr; | |
11193 | ||
11194 | irelend = internal_relocs + sec->reloc_count; | |
11195 | laddr = irel->r_offset; | |
11196 | insn = bfd_getb32 (contents + laddr); | |
11197 | ||
11198 | if (insn & 0x80000000) | |
11199 | return; | |
11200 | ||
11201 | if (nds32_elf_check_dup_relocs | |
11202 | (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF)) | |
11203 | return; | |
11204 | ||
11205 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11206 | R_NDS32_PTR_RESOLVED); | |
11207 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11208 | &local_sda, FALSE); | |
11209 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11210 | foff = foff - local_sda; | |
11211 | ||
11212 | if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT) | |
11213 | return; | |
11214 | ||
11215 | /* Concatenate opcode and sub-opcode for switch case. | |
11216 | It may be MEM or ALU1. */ | |
11217 | opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff); | |
11218 | switch (opc_insn_gotoff) | |
11219 | { | |
11220 | case (N32_OP6_MEM << 8) | N32_MEM_LW: | |
11221 | /* 4-byte aligned. */ | |
11222 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11223 | irel->r_info = | |
11224 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11225 | break; | |
11226 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
11227 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
11228 | irel->r_info = | |
11229 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11230 | break; | |
11231 | case (N32_OP6_MEM << 8) | N32_MEM_LH: | |
11232 | /* 2-byte aligned. */ | |
11233 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
11234 | irel->r_info = | |
11235 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11236 | break; | |
11237 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
4ec521f2 | 11238 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (18)); |
1c8f6a4d KLC |
11239 | irel->r_info = |
11240 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11241 | break; | |
11242 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
4ec521f2 | 11243 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), N32_BIT (19)); |
1c8f6a4d KLC |
11244 | irel->r_info = |
11245 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11246 | break; | |
11247 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
11248 | /* 1-byte aligned. */ | |
11249 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
11250 | irel->r_info = | |
11251 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11252 | break; | |
11253 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
4ec521f2 | 11254 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), N32_BIT (19)); |
1c8f6a4d KLC |
11255 | irel->r_info = |
11256 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11257 | break; | |
11258 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
11259 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
11260 | irel->r_info = | |
11261 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11262 | break; | |
11263 | case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD: | |
4ec521f2 | 11264 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), N32_BIT (19)); |
1c8f6a4d KLC |
11265 | irel->r_info = |
11266 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11267 | break; | |
11268 | default: | |
11269 | return; | |
11270 | } | |
11271 | ||
11272 | bfd_putb32 (insn, contents + laddr); | |
11273 | if (i1_irelfn != irelend) | |
11274 | { | |
11275 | i1_irelfn->r_addend |= 1; | |
11276 | *again = TRUE; | |
11277 | } | |
11278 | if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11279 | R_NDS32_INSN16)) != irelend) | |
11280 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11281 | ||
11282 | } | |
11283 | ||
11284 | static bfd_boolean | |
11285 | nds32_relax_adjust_label (bfd *abfd, asection *sec, | |
11286 | Elf_Internal_Rela *internal_relocs, | |
11287 | bfd_byte *contents, | |
11288 | nds32_elf_blank_t **relax_blank_list, | |
11289 | int optimize, int opt_size) | |
11290 | { | |
11291 | /* This code block is used to adjust 4-byte alignment by relax a pair | |
11292 | of instruction a time. | |
11293 | ||
11294 | It recognizes three types of relocations. | |
de194d85 | 11295 | 1. R_NDS32_LABEL - a alignment. |
1c8f6a4d KLC |
11296 | 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit. |
11297 | 3. is_16bit_NOP () - remove a 16-bit instruction. */ | |
11298 | ||
de194d85 YC |
11299 | /* TODO: It seems currently implementation only support 4-byte alignment. |
11300 | We should handle any-alignment. */ | |
1c8f6a4d KLC |
11301 | |
11302 | Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel; | |
11303 | Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL; | |
11304 | Elf_Internal_Rela rel_temp; | |
11305 | Elf_Internal_Rela *irelend; | |
11306 | bfd_vma address; | |
11307 | uint16_t insn16; | |
11308 | ||
11309 | /* Checking for branch relaxation relies on the relocations to | |
11310 | be sorted on 'r_offset'. This is not guaranteed so we must sort. */ | |
11311 | nds32_insertion_sort (internal_relocs, sec->reloc_count, | |
11312 | sizeof (Elf_Internal_Rela), compar_reloc); | |
11313 | ||
11314 | irelend = internal_relocs + sec->reloc_count; | |
11315 | ||
11316 | /* Force R_NDS32_LABEL before R_NDS32_INSN16. */ | |
11317 | /* FIXME: Can we generate the right order in assembler? | |
11318 | So we don't have to swapping them here. */ | |
11319 | ||
11320 | for (label_rel = internal_relocs, insn_rel = internal_relocs; | |
11321 | label_rel < irelend; label_rel++) | |
11322 | { | |
11323 | if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL) | |
11324 | continue; | |
11325 | ||
11326 | /* Find the first reloc has the same offset with label_rel. */ | |
11327 | while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset) | |
11328 | insn_rel++; | |
11329 | ||
11330 | for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset; | |
11331 | insn_rel++) | |
11332 | /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same | |
11333 | address. */ | |
11334 | if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16) | |
11335 | break; | |
11336 | ||
11337 | if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset | |
11338 | && insn_rel < label_rel) | |
11339 | { | |
11340 | /* Swap the two reloc if the R_NDS32_INSN16 is | |
11341 | before R_NDS32_LABEL. */ | |
11342 | memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela)); | |
11343 | memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela)); | |
11344 | memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela)); | |
11345 | } | |
11346 | } | |
11347 | ||
11348 | label_rel = NULL; | |
11349 | insn_rel = NULL; | |
11350 | /* If there were a sequence of R_NDS32_LABEL end up with .align 2 | |
11351 | or higher, remove other R_NDS32_LABEL with lower alignment. | |
11352 | If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted, | |
11353 | then the R_NDS32_LABEL sequence is broke. */ | |
11354 | for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++) | |
11355 | { | |
11356 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL) | |
11357 | { | |
11358 | if (label_rel == NULL) | |
11359 | { | |
11360 | if (tmp_rel->r_addend < 2) | |
11361 | label_rel = tmp_rel; | |
11362 | continue; | |
11363 | } | |
11364 | else if (tmp_rel->r_addend > 1) | |
11365 | { | |
11366 | /* Remove all LABEL relocation from label_rel to tmp_rel | |
11367 | including relocations with same offset as tmp_rel. */ | |
11368 | for (tmp2_rel = label_rel; tmp2_rel < tmp_rel | |
11369 | || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++) | |
11370 | { | |
11371 | if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL | |
11372 | && tmp2_rel->r_addend < 2) | |
11373 | tmp2_rel->r_info = | |
11374 | ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info), | |
11375 | R_NDS32_NONE); | |
11376 | } | |
11377 | label_rel = NULL; | |
11378 | } | |
11379 | } | |
11380 | else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel) | |
11381 | { | |
11382 | /* A new INSN16 which can be converted, so clear label_rel. */ | |
11383 | if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs, | |
11384 | irelend, &insn16) | |
11385 | || is_16bit_NOP (abfd, sec, tmp_rel)) | |
11386 | label_rel = NULL; | |
11387 | } | |
11388 | } | |
11389 | ||
11390 | label_rel = NULL; | |
11391 | insn_rel = NULL; | |
11392 | /* Optimized for speed and nothing has not been relaxed. | |
11393 | It's time to align labels. | |
11394 | We may convert a 16-bit instruction right before a label to | |
11395 | 32-bit, in order to align the label if necessary | |
11396 | all reloc entries has been sorted by r_offset. */ | |
11397 | for (irel = internal_relocs; irel < irelend; irel++) | |
11398 | { | |
11399 | if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16 | |
11400 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL) | |
11401 | continue; | |
11402 | ||
11403 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16) | |
11404 | { | |
11405 | /* A new INSN16 found, resize the old one. */ | |
11406 | if (is_convert_32_to_16 | |
11407 | (abfd, sec, irel, internal_relocs, irelend, &insn16) | |
11408 | || is_16bit_NOP (abfd, sec, irel)) | |
11409 | { | |
11410 | if (insn_rel) | |
11411 | { | |
11412 | /* Previous INSN16 reloc exists, reduce its | |
11413 | size to 16-bit. */ | |
11414 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11415 | irelend, &insn16)) | |
35c08157 | 11416 | { |
1c8f6a4d KLC |
11417 | nds32_elf_write_16 (abfd, contents, insn_rel, |
11418 | internal_relocs, irelend, insn16); | |
11419 | ||
11420 | if (!insert_nds32_elf_blank_recalc_total | |
11421 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11422 | return FALSE; | |
11423 | } | |
11424 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11425 | { | |
11426 | if (!insert_nds32_elf_blank_recalc_total | |
11427 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11428 | return FALSE; | |
11429 | } | |
11430 | insn_rel->r_info = | |
11431 | ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE); | |
11432 | } | |
11433 | /* Save the new one for later use. */ | |
11434 | insn_rel = irel; | |
11435 | } | |
11436 | else | |
11437 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11438 | R_NDS32_NONE); | |
11439 | } | |
11440 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL) | |
11441 | { | |
11442 | /* Search for label. */ | |
11443 | int force_relax = 0; | |
11444 | ||
11445 | /* Label on 16-bit instruction or optimization | |
11446 | needless, just reset this reloc. */ | |
11447 | insn16 = bfd_getb16 (contents + irel->r_offset); | |
11448 | if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000))) | |
11449 | { | |
11450 | irel->r_info = | |
11451 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11452 | continue; | |
11453 | } | |
11454 | ||
11455 | address = | |
11456 | irel->r_offset - get_nds32_elf_blank_total (relax_blank_list, | |
11457 | irel->r_offset, 1); | |
11458 | ||
11459 | if (!insn_rel) | |
11460 | { | |
11461 | /* Check if there is case which can not be aligned. */ | |
11462 | if (irel->r_addend == 2 && address & 0x2) | |
11463 | return FALSE; | |
11464 | continue; | |
11465 | } | |
11466 | ||
11467 | /* Try to align this label. */ | |
11468 | ||
11469 | if ((irel->r_addend & 0x1f) < 2) | |
11470 | { | |
11471 | /* Check if there is a INSN16 at the same address. | |
11472 | Label_rel always seats before insn_rel after | |
11473 | our sort. */ | |
11474 | ||
11475 | /* Search for INSN16 at LABEL location. If INSN16 is at | |
11476 | same location and this LABEL alignment is lower than 2, | |
11477 | the INSN16 can be converted to 2-byte. */ | |
11478 | for (tmp_rel = irel; | |
11479 | tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset; | |
11480 | tmp_rel++) | |
11481 | { | |
11482 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 | |
11483 | && (is_convert_32_to_16 | |
11484 | (abfd, sec, tmp_rel, internal_relocs, | |
11485 | irelend, &insn16) | |
11486 | || is_16bit_NOP (abfd, sec, tmp_rel))) | |
11487 | { | |
11488 | force_relax = 1; | |
11489 | break; | |
11490 | } | |
11491 | } | |
11492 | } | |
11493 | ||
11494 | if (force_relax || irel->r_addend == 1 || address & 0x2) | |
11495 | { | |
11496 | /* Label not aligned. */ | |
11497 | /* Previous reloc exists, reduce its size to 16-bit. */ | |
11498 | if (is_convert_32_to_16 (abfd, sec, insn_rel, | |
11499 | internal_relocs, irelend, &insn16)) | |
11500 | { | |
11501 | nds32_elf_write_16 (abfd, contents, insn_rel, | |
11502 | internal_relocs, irelend, insn16); | |
11503 | ||
11504 | if (!insert_nds32_elf_blank_recalc_total | |
11505 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11506 | return FALSE; | |
11507 | } | |
11508 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11509 | { | |
11510 | if (!insert_nds32_elf_blank_recalc_total | |
11511 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11512 | return FALSE; | |
11513 | } | |
11514 | ||
11515 | } | |
11516 | /* INSN16 reloc is used. */ | |
11517 | insn_rel = NULL; | |
11518 | } | |
11519 | } | |
11520 | ||
11521 | address = | |
11522 | sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0); | |
11523 | if (insn_rel && (address & 0x2 || opt_size)) | |
11524 | { | |
11525 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11526 | irelend, &insn16)) | |
11527 | { | |
11528 | nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs, | |
11529 | irelend, insn16); | |
11530 | if (!insert_nds32_elf_blank_recalc_total | |
11531 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11532 | return FALSE; | |
11533 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11534 | R_NDS32_NONE); | |
11535 | } | |
11536 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11537 | { | |
11538 | if (!insert_nds32_elf_blank_recalc_total | |
11539 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11540 | return FALSE; | |
11541 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11542 | R_NDS32_NONE); | |
11543 | } | |
11544 | } | |
11545 | insn_rel = NULL; | |
11546 | return TRUE; | |
11547 | } | |
11548 | ||
1c8f6a4d KLC |
11549 | static bfd_boolean |
11550 | nds32_elf_relax_section (bfd *abfd, asection *sec, | |
11551 | struct bfd_link_info *link_info, bfd_boolean *again) | |
11552 | { | |
11553 | nds32_elf_blank_t *relax_blank_list = NULL; | |
11554 | Elf_Internal_Shdr *symtab_hdr; | |
11555 | Elf_Internal_Rela *internal_relocs; | |
11556 | Elf_Internal_Rela *irel; | |
11557 | Elf_Internal_Rela *irelend; | |
11558 | Elf_Internal_Sym *isymbuf = NULL; | |
11559 | bfd_byte *contents = NULL; | |
11560 | bfd_boolean result = TRUE; | |
11561 | int optimize = 0; | |
11562 | int opt_size = 0; | |
11563 | uint32_t insn; | |
11564 | uint16_t insn16; | |
11565 | ||
11566 | /* Target dependnet option. */ | |
11567 | struct elf_nds32_link_hash_table *table; | |
11568 | int load_store_relax; | |
1c8f6a4d KLC |
11569 | |
11570 | relax_blank_list = NULL; | |
11571 | ||
11572 | *again = FALSE; | |
11573 | ||
11574 | /* Nothing to do for | |
11575 | * relocatable link or | |
11576 | * non-relocatable section or | |
11577 | * non-code section or | |
11578 | * empty content or | |
11579 | * no reloc entry. */ | |
0e1862bb | 11580 | if (bfd_link_relocatable (link_info) |
1c8f6a4d | 11581 | || (sec->flags & SEC_RELOC) == 0 |
cd28e7aa | 11582 | || (sec->flags & SEC_EXCLUDE) != 0 |
1c8f6a4d KLC |
11583 | || (sec->flags & SEC_CODE) == 0 |
11584 | || sec->size == 0) | |
11585 | return TRUE; | |
11586 | ||
11587 | /* 09.12.11 Workaround. */ | |
11588 | /* We have to adjust align for R_NDS32_LABEL if needed. | |
11589 | The adjust approach only can fix 2-byte align once. */ | |
11590 | if (sec->alignment_power > 2) | |
11591 | return TRUE; | |
11592 | ||
11593 | /* The optimization type to do. */ | |
11594 | ||
11595 | table = nds32_elf_hash_table (link_info); | |
1c8f6a4d KLC |
11596 | |
11597 | /* The begining of general relaxation. */ | |
11598 | ||
11599 | if (is_SDA_BASE_set == 0) | |
11600 | { | |
11601 | bfd_vma gp; | |
11602 | is_SDA_BASE_set = 1; | |
11603 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11604 | &gp, FALSE); | |
11605 | relax_range_measurement (abfd); | |
11606 | } | |
11607 | ||
1c8f6a4d KLC |
11608 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
11609 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
11610 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
11611 | TRUE /* keep_memory */); | |
11612 | if (internal_relocs == NULL) | |
11613 | goto error_return; | |
11614 | ||
11615 | irelend = internal_relocs + sec->reloc_count; | |
11616 | irel = find_relocs_at_address (internal_relocs, internal_relocs, | |
11617 | irelend, R_NDS32_RELAX_ENTRY); | |
11618 | ||
11619 | if (irel == irelend) | |
11620 | return TRUE; | |
11621 | ||
11622 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
11623 | { | |
11624 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG) | |
f9671640 | 11625 | return TRUE; |
1c8f6a4d KLC |
11626 | |
11627 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG) | |
11628 | optimize = 1; | |
11629 | ||
11630 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG) | |
11631 | opt_size = 1; | |
11632 | } | |
11633 | ||
11634 | load_store_relax = table->load_store_relax; | |
11635 | ||
11636 | /* Get symbol table and section content. */ | |
0c4bd9d9 | 11637 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
1c8f6a4d KLC |
11638 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
11639 | goto error_return; | |
11640 | ||
11641 | /* Do relax loop only when finalize is not done. | |
11642 | Take care of relaxable relocs except INSN16. */ | |
11643 | for (irel = internal_relocs; irel < irelend; irel++) | |
11644 | { | |
11645 | int seq_len; /* Original length of instruction sequence. */ | |
11646 | int insn_len = 0; /* Final length of instruction sequence. */ | |
11647 | bfd_boolean removed; | |
11648 | ||
11649 | insn = 0; | |
11650 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
11651 | && (irel->r_addend & 0x1f) >= 2) | |
11652 | optimize = 1; | |
11653 | ||
11654 | /* Relocation Types | |
11655 | R_NDS32_LONGCALL1 53 | |
11656 | R_NDS32_LONGCALL2 54 | |
11657 | R_NDS32_LONGCALL3 55 | |
11658 | R_NDS32_LONGJUMP1 56 | |
11659 | R_NDS32_LONGJUMP2 57 | |
11660 | R_NDS32_LONGJUMP3 58 | |
11661 | R_NDS32_LOADSTORE 59 */ | |
11662 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1 | |
11663 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE) | |
11664 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
11665 | ||
11666 | /* Relocation Types | |
11667 | R_NDS32_LONGCALL4 107 | |
11668 | R_NDS32_LONGCALL5 108 | |
11669 | R_NDS32_LONGCALL6 109 | |
11670 | R_NDS32_LONGJUMP4 110 | |
11671 | R_NDS32_LONGJUMP5 111 | |
11672 | R_NDS32_LONGJUMP6 112 | |
11673 | R_NDS32_LONGJUMP7 113 */ | |
11674 | else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4 | |
11675 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7) | |
11676 | seq_len = 4; | |
11677 | ||
11678 | /* Relocation Types | |
11679 | R_NDS32_LO12S0_RELA 30 | |
11680 | R_NDS32_LO12S1_RELA 29 | |
11681 | R_NDS32_LO12S2_RELA 28 | |
11682 | R_NDS32_LO12S2_SP_RELA 71 | |
11683 | R_NDS32_LO12S2_DP_RELA 70 | |
11684 | R_NDS32_GOT_LO12 46 | |
11685 | R_NDS32_GOTOFF_LO12 50 | |
11686 | R_NDS32_PLTREL_LO12 65 | |
11687 | R_NDS32_PLT_GOTREL_LO12 67 | |
11688 | R_NDS32_17IFC_PCREL_RELA 96 | |
11689 | R_NDS32_GOT_SUFF 193 | |
11690 | R_NDS32_GOTOFF_SUFF 194 | |
11691 | R_NDS32_PLT_GOT_SUFF 195 | |
11692 | R_NDS32_MULCALL_SUFF 196 | |
11693 | R_NDS32_PTR 197 */ | |
11694 | else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA | |
11695 | && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA) | |
11696 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA | |
11697 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA | |
11698 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12 | |
11699 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12 | |
11700 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12 | |
11701 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12 | |
11702 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12 | |
11703 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF | |
11704 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR) | |
11705 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA | |
11706 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12 | |
11707 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD | |
11708 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS) | |
11709 | seq_len = 0; | |
11710 | else | |
11711 | continue; | |
11712 | ||
11713 | insn_len = seq_len; | |
11714 | removed = FALSE; | |
11715 | ||
11716 | switch (ELF32_R_TYPE (irel->r_info)) | |
11717 | { | |
11718 | case R_NDS32_LONGCALL1: | |
11719 | removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs, | |
11720 | &insn_len, contents, isymbuf, | |
11721 | symtab_hdr); | |
11722 | break; | |
11723 | case R_NDS32_LONGCALL2: | |
11724 | removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs, | |
11725 | &insn_len, contents, isymbuf, | |
11726 | symtab_hdr); | |
11727 | break; | |
11728 | case R_NDS32_LONGCALL3: | |
11729 | removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs, | |
11730 | &insn_len, contents, isymbuf, | |
11731 | symtab_hdr); | |
11732 | break; | |
11733 | case R_NDS32_LONGJUMP1: | |
11734 | removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs, | |
11735 | &insn_len, contents, isymbuf, | |
11736 | symtab_hdr); | |
11737 | break; | |
11738 | case R_NDS32_LONGJUMP2: | |
11739 | removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs, | |
11740 | &insn_len, contents, isymbuf, | |
11741 | symtab_hdr); | |
11742 | break; | |
11743 | case R_NDS32_LONGJUMP3: | |
11744 | removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs, | |
11745 | &insn_len, contents, isymbuf, | |
11746 | symtab_hdr); | |
11747 | break; | |
11748 | case R_NDS32_LONGCALL4: | |
11749 | removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs, | |
11750 | &insn_len, contents, isymbuf, | |
11751 | symtab_hdr); | |
11752 | break; | |
11753 | case R_NDS32_LONGCALL5: | |
11754 | removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs, | |
11755 | &insn_len, contents, isymbuf, | |
11756 | symtab_hdr); | |
11757 | break; | |
11758 | case R_NDS32_LONGCALL6: | |
11759 | removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs, | |
11760 | &insn_len, contents, isymbuf, | |
11761 | symtab_hdr); | |
11762 | break; | |
11763 | case R_NDS32_LONGJUMP4: | |
11764 | removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs, | |
11765 | &insn_len, contents, isymbuf, | |
11766 | symtab_hdr); | |
11767 | break; | |
11768 | case R_NDS32_LONGJUMP5: | |
11769 | removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs, | |
11770 | &insn_len, &seq_len, contents, | |
11771 | isymbuf, symtab_hdr); | |
11772 | break; | |
11773 | case R_NDS32_LONGJUMP6: | |
11774 | removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs, | |
11775 | &insn_len, &seq_len, contents, | |
11776 | isymbuf, symtab_hdr); | |
11777 | break; | |
11778 | case R_NDS32_LONGJUMP7: | |
11779 | removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs, | |
11780 | &insn_len, &seq_len, contents, | |
11781 | isymbuf, symtab_hdr); | |
11782 | break; | |
11783 | case R_NDS32_LOADSTORE: | |
11784 | removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel, | |
11785 | internal_relocs, &insn_len, | |
11786 | contents, isymbuf, symtab_hdr, | |
11787 | load_store_relax); | |
11788 | break; | |
11789 | case R_NDS32_LO12S0_RELA: | |
11790 | case R_NDS32_LO12S1_RELA: | |
11791 | case R_NDS32_LO12S2_DP_RELA: | |
11792 | case R_NDS32_LO12S2_SP_RELA: | |
11793 | case R_NDS32_LO12S2_RELA: | |
11794 | /* Relax for low part. */ | |
11795 | nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs, | |
11796 | contents, isymbuf, symtab_hdr); | |
11797 | ||
11798 | /* It is impossible to delete blank, so just continue. */ | |
11799 | continue; | |
11800 | case R_NDS32_GOT_LO12: | |
11801 | case R_NDS32_GOTOFF_LO12: | |
11802 | case R_NDS32_PLTREL_LO12: | |
11803 | case R_NDS32_PLT_GOTREL_LO12: | |
11804 | case R_NDS32_GOTPC_LO12: | |
11805 | /* Relax for PIC gp-relative low part. */ | |
11806 | nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents, | |
11807 | isymbuf, symtab_hdr); | |
35c08157 | 11808 | |
1c8f6a4d KLC |
11809 | /* It is impossible to delete blank, so just continue. */ |
11810 | continue; | |
11811 | case R_NDS32_TLS_LE_LO12: | |
11812 | /* Relax for LE TLS low part. */ | |
11813 | nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents, | |
11814 | isymbuf, symtab_hdr); | |
35c08157 | 11815 | |
1c8f6a4d KLC |
11816 | /* It is impossible to delete blank, so just continue. */ |
11817 | continue; | |
11818 | case R_NDS32_TLS_LE_ADD: | |
11819 | nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs, | |
11820 | contents, isymbuf, symtab_hdr, again); | |
11821 | /* It is impossible to delete blank, so just continue. */ | |
11822 | continue; | |
11823 | case R_NDS32_TLS_LE_LS: | |
11824 | nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs, | |
11825 | contents, isymbuf, symtab_hdr, again); | |
11826 | continue; | |
11827 | case R_NDS32_PTR: | |
11828 | removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs, | |
11829 | &insn_len, &seq_len, contents); | |
11830 | break; | |
11831 | case R_NDS32_PLT_GOT_SUFF: | |
11832 | nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel, | |
11833 | internal_relocs, contents, | |
11834 | isymbuf, symtab_hdr, again); | |
11835 | /* It is impossible to delete blank, so just continue. */ | |
11836 | continue; | |
11837 | case R_NDS32_GOT_SUFF: | |
11838 | nds32_elf_relax_got_suff (link_info, abfd, sec, irel, | |
11839 | internal_relocs, contents, | |
11840 | symtab_hdr, again); | |
11841 | /* It is impossible to delete blank, so just continue. */ | |
11842 | continue; | |
11843 | case R_NDS32_GOTOFF_SUFF: | |
11844 | nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel, | |
11845 | internal_relocs, contents, | |
11846 | isymbuf, symtab_hdr, again); | |
11847 | /* It is impossible to delete blank, so just continue. */ | |
11848 | continue; | |
11849 | default: | |
11850 | continue; | |
11851 | ||
11852 | } | |
11853 | if (removed && seq_len - insn_len > 0) | |
11854 | { | |
11855 | if (!insert_nds32_elf_blank | |
11856 | (&relax_blank_list, irel->r_offset + insn_len, | |
11857 | seq_len - insn_len)) | |
11858 | goto error_return; | |
11859 | *again = TRUE; | |
35c08157 | 11860 | } |
1c8f6a4d KLC |
11861 | } |
11862 | ||
11863 | calc_nds32_blank_total (relax_blank_list); | |
11864 | ||
11865 | if (table->relax_fp_as_gp) | |
11866 | { | |
11867 | if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs, | |
11868 | irelend, isymbuf)) | |
11869 | goto error_return; | |
35c08157 | 11870 | |
535b785f | 11871 | if (!*again) |
35c08157 | 11872 | { |
1c8f6a4d KLC |
11873 | if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs, |
11874 | irelend)) | |
11875 | goto error_return; | |
35c08157 KLC |
11876 | } |
11877 | } | |
1c8f6a4d | 11878 | |
535b785f | 11879 | if (!*again) |
1c8f6a4d KLC |
11880 | { |
11881 | if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents, | |
11882 | &relax_blank_list, optimize, opt_size)) | |
11883 | goto error_return; | |
11884 | } | |
11885 | ||
11886 | /* It doesn't matter optimize_for_space_no_align anymore. | |
35c08157 KLC |
11887 | If object file is assembled with flag '-Os', |
11888 | the we don't adjust jump-destination on 4-byte boundary. */ | |
11889 | ||
11890 | if (relax_blank_list) | |
11891 | { | |
11892 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
11893 | relax_blank_list = NULL; | |
11894 | } | |
11895 | ||
535b785f | 11896 | if (!*again) |
35c08157 KLC |
11897 | { |
11898 | /* Closing the section, so we don't relax it anymore. */ | |
11899 | bfd_vma sec_size_align; | |
11900 | Elf_Internal_Rela *tmp_rel; | |
11901 | ||
11902 | /* Pad to alignment boundary. Only handle current section alignment. */ | |
609332f1 NC |
11903 | sec_size_align = (sec->size + (~((-1U) << sec->alignment_power))) |
11904 | & ((-1U) << sec->alignment_power); | |
35c08157 KLC |
11905 | if ((sec_size_align - sec->size) & 0x2) |
11906 | { | |
11907 | insn16 = NDS32_NOP16; | |
11908 | bfd_putb16 (insn16, contents + sec->size); | |
11909 | sec->size += 2; | |
11910 | } | |
11911 | ||
11912 | while (sec_size_align != sec->size) | |
11913 | { | |
11914 | insn = NDS32_NOP32; | |
11915 | bfd_putb32 (insn, contents + sec->size); | |
11916 | sec->size += 4; | |
11917 | } | |
11918 | ||
1c8f6a4d KLC |
11919 | tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs, |
11920 | irelend, R_NDS32_RELAX_ENTRY); | |
35c08157 KLC |
11921 | if (tmp_rel != irelend) |
11922 | tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG; | |
11923 | ||
11924 | clean_nds32_elf_blank (); | |
11925 | } | |
11926 | ||
11927 | finish: | |
11928 | if (internal_relocs != NULL | |
11929 | && elf_section_data (sec)->relocs != internal_relocs) | |
11930 | free (internal_relocs); | |
11931 | ||
11932 | if (contents != NULL | |
11933 | && elf_section_data (sec)->this_hdr.contents != contents) | |
11934 | free (contents); | |
11935 | ||
11936 | if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf) | |
11937 | free (isymbuf); | |
11938 | ||
11939 | return result; | |
11940 | ||
11941 | error_return: | |
11942 | result = FALSE; | |
11943 | goto finish; | |
11944 | } | |
11945 | ||
11946 | static struct bfd_elf_special_section const nds32_elf_special_sections[] = | |
11947 | { | |
11948 | {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE}, | |
11949 | {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE}, | |
11950 | {NULL, 0, 0, 0, 0} | |
11951 | }; | |
11952 | ||
11953 | static bfd_boolean | |
11954 | nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED, | |
11955 | struct bfd_link_info *info, | |
11956 | void *finfo ATTRIBUTE_UNUSED, | |
11957 | bfd_boolean (*func) (void *, const char *, | |
11958 | Elf_Internal_Sym *, | |
11959 | asection *, | |
11960 | struct elf_link_hash_entry *) | |
11961 | ATTRIBUTE_UNUSED) | |
11962 | { | |
11963 | FILE *sym_ld_script = NULL; | |
11964 | struct elf_nds32_link_hash_table *table; | |
11965 | ||
11966 | table = nds32_elf_hash_table (info); | |
11967 | sym_ld_script = table->sym_ld_script; | |
11968 | ||
11969 | if (check_start_export_sym) | |
11970 | fprintf (sym_ld_script, "}\n"); | |
11971 | ||
11972 | return TRUE; | |
11973 | } | |
11974 | ||
11975 | static enum elf_reloc_type_class | |
11976 | nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
11977 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
11978 | const Elf_Internal_Rela *rela) | |
11979 | { | |
11980 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
11981 | { | |
11982 | case R_NDS32_RELATIVE: | |
11983 | return reloc_class_relative; | |
11984 | case R_NDS32_JMP_SLOT: | |
11985 | return reloc_class_plt; | |
11986 | case R_NDS32_COPY: | |
11987 | return reloc_class_copy; | |
11988 | default: | |
11989 | return reloc_class_normal; | |
11990 | } | |
11991 | } | |
11992 | ||
11993 | /* Put target dependent option into info hash table. */ | |
11994 | void | |
11995 | bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info, | |
11996 | int relax_fp_as_gp, | |
11997 | int eliminate_gc_relocs, | |
11998 | FILE * sym_ld_script, int load_store_relax, | |
11999 | int target_optimize, int relax_status, | |
12000 | int relax_round, FILE * ex9_export_file, | |
12001 | FILE * ex9_import_file, | |
12002 | int update_ex9_table, int ex9_limit, | |
12003 | bfd_boolean ex9_loop_aware, | |
12004 | bfd_boolean ifc_loop_aware) | |
12005 | { | |
12006 | struct elf_nds32_link_hash_table *table; | |
12007 | ||
12008 | table = nds32_elf_hash_table (link_info); | |
12009 | if (table == NULL) | |
12010 | return; | |
12011 | ||
12012 | table->relax_fp_as_gp = relax_fp_as_gp; | |
12013 | table->eliminate_gc_relocs = eliminate_gc_relocs; | |
12014 | table->sym_ld_script = sym_ld_script; | |
12015 | table ->load_store_relax = load_store_relax; | |
12016 | table->target_optimize = target_optimize; | |
12017 | table->relax_status = relax_status; | |
12018 | table->relax_round = relax_round; | |
12019 | table->ex9_export_file = ex9_export_file; | |
12020 | table->ex9_import_file = ex9_import_file; | |
12021 | table->update_ex9_table = update_ex9_table; | |
12022 | table->ex9_limit = ex9_limit; | |
12023 | table->ex9_loop_aware = ex9_loop_aware; | |
12024 | table->ifc_loop_aware = ifc_loop_aware; | |
12025 | } | |
12026 | \f | |
12027 | /* These functions and data-structures are used for fp-as-gp | |
12028 | optimization. */ | |
12029 | ||
12030 | #define FAG_THRESHOLD 3 /* At least 3 gp-access. */ | |
1c8f6a4d KLC |
12031 | /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between |
12032 | the read-only section and read-write section. */ | |
12033 | #define FAG_WINDOW (508 - 32) | |
35c08157 KLC |
12034 | |
12035 | /* An nds32_fag represent a gp-relative access. | |
12036 | We find best fp-base by using a sliding window | |
12037 | to find a base address which can cover most gp-access. */ | |
12038 | struct nds32_fag | |
12039 | { | |
12040 | struct nds32_fag *next; /* NULL-teminated linked list. */ | |
12041 | bfd_vma addr; /* The address of this fag. */ | |
12042 | Elf_Internal_Rela **relas; /* The relocations associated with this fag. | |
12043 | It is used for applying FP7U2_FLAG. */ | |
12044 | int count; /* How many times this address is referred. | |
12045 | There should be exactly `count' relocations | |
12046 | in relas. */ | |
12047 | int relas_capcity; /* The buffer size of relas. | |
12048 | We use an array instead of linked-list, | |
12049 | and realloc is used to adjust buffer size. */ | |
12050 | }; | |
12051 | ||
12052 | static void | |
12053 | nds32_fag_init (struct nds32_fag *head) | |
12054 | { | |
12055 | memset (head, 0, sizeof (struct nds32_fag)); | |
12056 | } | |
12057 | ||
12058 | static void | |
12059 | nds32_fag_verify (struct nds32_fag *head) | |
12060 | { | |
12061 | struct nds32_fag *iter; | |
12062 | struct nds32_fag *prev; | |
12063 | ||
12064 | prev = NULL; | |
12065 | iter = head->next; | |
12066 | while (iter) | |
12067 | { | |
12068 | if (prev && prev->addr >= iter->addr) | |
12069 | puts ("Bug in fp-as-gp insertion."); | |
12070 | prev = iter; | |
12071 | iter = iter->next; | |
12072 | } | |
12073 | } | |
12074 | ||
12075 | /* Insert a fag in ascending order. | |
12076 | If a fag of the same address already exists, | |
12077 | they are chained by relas array. */ | |
12078 | ||
12079 | static void | |
12080 | nds32_fag_insert (struct nds32_fag *head, bfd_vma addr, | |
12081 | Elf_Internal_Rela * rel) | |
12082 | { | |
12083 | struct nds32_fag *iter; | |
12084 | struct nds32_fag *new_fag; | |
12085 | const int INIT_RELAS_CAP = 4; | |
12086 | ||
12087 | for (iter = head; | |
12088 | iter->next && iter->next->addr <= addr; | |
12089 | iter = iter->next) | |
12090 | /* Find somewhere to insert. */ ; | |
12091 | ||
12092 | /* `iter' will be equal to `head' if the list is empty. */ | |
12093 | if (iter != head && iter->addr == addr) | |
12094 | { | |
12095 | /* The address exists in the list. | |
12096 | Insert `rel' into relocation list, relas. */ | |
12097 | ||
12098 | /* Check whether relas is big enough. */ | |
12099 | if (iter->count >= iter->relas_capcity) | |
12100 | { | |
12101 | iter->relas_capcity *= 2; | |
12102 | iter->relas = bfd_realloc | |
12103 | (iter->relas, iter->relas_capcity * sizeof (void *)); | |
12104 | } | |
12105 | iter->relas[iter->count++] = rel; | |
12106 | return; | |
12107 | } | |
12108 | ||
12109 | /* This is a new address. Create a fag node for it. */ | |
12110 | new_fag = bfd_malloc (sizeof (struct nds32_fag)); | |
12111 | memset (new_fag, 0, sizeof (*new_fag)); | |
12112 | new_fag->addr = addr; | |
12113 | new_fag->count = 1; | |
12114 | new_fag->next = iter->next; | |
12115 | new_fag->relas_capcity = INIT_RELAS_CAP; | |
12116 | new_fag->relas = (Elf_Internal_Rela **) | |
12117 | bfd_malloc (new_fag->relas_capcity * sizeof (void *)); | |
12118 | new_fag->relas[0] = rel; | |
12119 | iter->next = new_fag; | |
12120 | ||
12121 | nds32_fag_verify (head); | |
12122 | } | |
12123 | ||
12124 | static void | |
12125 | nds32_fag_free_list (struct nds32_fag *head) | |
12126 | { | |
12127 | struct nds32_fag *iter; | |
12128 | ||
12129 | iter = head->next; | |
12130 | while (iter) | |
12131 | { | |
12132 | struct nds32_fag *tmp = iter; | |
12133 | iter = iter->next; | |
12134 | free (tmp->relas); | |
12135 | tmp->relas = NULL; | |
12136 | free (tmp); | |
12137 | } | |
12138 | } | |
12139 | ||
35c08157 KLC |
12140 | /* Find the best fp-base address. |
12141 | The relocation associated with that address is returned, | |
12142 | so we can track the symbol instead of a fixed address. | |
12143 | ||
12144 | When relaxation, the address of an datum may change, | |
12145 | because a text section is shrinked, so the data section | |
1c8f6a4d | 12146 | moves forward. If the aligments of text and data section |
35c08157 KLC |
12147 | are different, their distance may change too. |
12148 | Therefore, tracking a fixed address is not appriate. */ | |
12149 | ||
12150 | static int | |
12151 | nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp) | |
12152 | { | |
12153 | struct nds32_fag *base; /* First fag in the window. */ | |
12154 | struct nds32_fag *last; /* First fag outside the window. */ | |
12155 | int accu = 0; /* Usage accumulation. */ | |
12156 | struct nds32_fag *best; /* Best fag. */ | |
12157 | int baccu = 0; /* Best accumulation. */ | |
12158 | ||
12159 | /* Use first fag for initial, and find the last fag in the window. | |
12160 | ||
12161 | In each iteration, we could simply subtract previous fag | |
12162 | and accumulate following fags which are inside the window, | |
12163 | untill we each the end. */ | |
12164 | ||
1c8f6a4d KLC |
12165 | if (head->next == NULL) |
12166 | { | |
12167 | *bestpp = NULL; | |
12168 | return 0; | |
12169 | } | |
35c08157 KLC |
12170 | |
12171 | /* Initialize base. */ | |
12172 | base = head->next; | |
12173 | best = base; | |
12174 | for (last = base; | |
12175 | last && last->addr < base->addr + FAG_WINDOW; | |
12176 | last = last->next) | |
12177 | accu += last->count; | |
12178 | ||
12179 | baccu = accu; | |
12180 | ||
12181 | /* Record the best base in each iteration. */ | |
12182 | while (base->next) | |
1c8f6a4d KLC |
12183 | { |
12184 | accu -= base->count; | |
12185 | base = base->next; | |
12186 | /* Account fags in window. */ | |
12187 | for (/* Nothing. */; | |
12188 | last && last->addr < base->addr + FAG_WINDOW; | |
12189 | last = last->next) | |
12190 | accu += last->count; | |
12191 | ||
12192 | /* A better fp-base? */ | |
12193 | if (accu > baccu) | |
12194 | { | |
12195 | best = base; | |
12196 | baccu = accu; | |
12197 | } | |
12198 | } | |
35c08157 KLC |
12199 | |
12200 | if (bestpp) | |
12201 | *bestpp = best; | |
12202 | return baccu; | |
12203 | } | |
12204 | ||
12205 | /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses, | |
12206 | so we can convert it fo fp-relative access later. | |
12207 | `best_fag' is the best fp-base. Only those inside the window | |
12208 | of best_fag is applied the flag. */ | |
12209 | ||
12210 | static bfd_boolean | |
12211 | nds32_fag_mark_relax (struct bfd_link_info *link_info, | |
12212 | bfd *abfd, struct nds32_fag *best_fag, | |
12213 | Elf_Internal_Rela *internal_relocs, | |
12214 | Elf_Internal_Rela *irelend) | |
12215 | { | |
12216 | struct nds32_fag *ifag; | |
12217 | bfd_vma best_fpbase, gp; | |
12218 | bfd *output_bfd; | |
12219 | ||
12220 | output_bfd = abfd->sections->output_section->owner; | |
12221 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
12222 | best_fpbase = best_fag->addr; | |
12223 | ||
1c8f6a4d KLC |
12224 | if (best_fpbase > gp + sdata_range[1][1] |
12225 | || best_fpbase < gp - sdata_range[1][0]) | |
35c08157 KLC |
12226 | return FALSE; |
12227 | ||
12228 | /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag, | |
12229 | so we know they can be converted to lwi37.fp. */ | |
12230 | for (ifag = best_fag; | |
12231 | ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next) | |
12232 | { | |
12233 | int i; | |
12234 | ||
12235 | for (i = 0; i < ifag->count; i++) | |
12236 | { | |
12237 | Elf_Internal_Rela *insn16_rel; | |
12238 | Elf_Internal_Rela *fag_rel; | |
12239 | ||
12240 | fag_rel = ifag->relas[i]; | |
12241 | ||
12242 | /* Only if this is within the WINDOWS, FP7U2_FLAG | |
12243 | is applied. */ | |
12244 | ||
12245 | insn16_rel = find_relocs_at_address | |
12246 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12247 | ||
12248 | if (insn16_rel != irelend) | |
12249 | insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG; | |
12250 | } | |
12251 | } | |
12252 | return TRUE; | |
12253 | } | |
12254 | ||
1c8f6a4d KLC |
12255 | /* Reset INSN16 to clean fp as gp. */ |
12256 | ||
12257 | static void | |
12258 | nds32_fag_unmark_relax (struct nds32_fag *fag, | |
12259 | Elf_Internal_Rela *internal_relocs, | |
12260 | Elf_Internal_Rela *irelend) | |
12261 | { | |
12262 | struct nds32_fag *ifag; | |
12263 | int i; | |
12264 | Elf_Internal_Rela *insn16_rel; | |
12265 | Elf_Internal_Rela *fag_rel; | |
12266 | ||
12267 | for (ifag = fag; ifag; ifag = ifag->next) | |
12268 | { | |
12269 | for (i = 0; i < ifag->count; i++) | |
12270 | { | |
12271 | fag_rel = ifag->relas[i]; | |
12272 | ||
12273 | /* Restore the INSN16 relocation. */ | |
12274 | insn16_rel = find_relocs_at_address | |
12275 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12276 | ||
12277 | if (insn16_rel != irelend) | |
12278 | insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG; | |
12279 | } | |
12280 | } | |
12281 | } | |
12282 | ||
35c08157 KLC |
12283 | /* This is the main function of fp-as-gp optimization. |
12284 | It should be called by relax_section. */ | |
12285 | ||
12286 | static bfd_boolean | |
12287 | nds32_relax_fp_as_gp (struct bfd_link_info *link_info, | |
12288 | bfd *abfd, asection *sec, | |
12289 | Elf_Internal_Rela *internal_relocs, | |
12290 | Elf_Internal_Rela *irelend, | |
12291 | Elf_Internal_Sym *isymbuf) | |
12292 | { | |
12293 | Elf_Internal_Rela *begin_rel = NULL; | |
12294 | Elf_Internal_Rela *irel; | |
12295 | struct nds32_fag fag_head; | |
12296 | Elf_Internal_Shdr *symtab_hdr; | |
12297 | bfd_byte *contents; | |
1c8f6a4d | 12298 | bfd_boolean ifc_inside = FALSE; |
35c08157 KLC |
12299 | |
12300 | /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */ | |
12301 | ||
12302 | /* Per-function fp-base selection. | |
12303 | 1. Create a list for all the gp-relative access. | |
12304 | 2. Base on those gp-relative address, | |
12305 | find a fp-base which can cover most access. | |
12306 | 3. Use the fp-base for fp-as-gp relaxation. | |
12307 | ||
12308 | NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times), | |
12309 | we should | |
12310 | 1. delete the `la $fp, _FP_BASE_' instruction and | |
12311 | 2. not convert lwi.gp to lwi37.fp. | |
12312 | ||
12313 | To delete the _FP_BASE_ instruction, we simply apply | |
12314 | R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it. | |
12315 | ||
12316 | To suppress the conversion, we simply NOT to apply | |
12317 | R_NDS32_INSN16_FP7U2_FLAG flag. */ | |
12318 | ||
12319 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12320 | ||
0c4bd9d9 | 12321 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
35c08157 KLC |
12322 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
12323 | return FALSE; | |
12324 | ||
12325 | /* Check whether it is worth for fp-as-gp optimization, | |
12326 | i.e., at least 3 gp-load. | |
12327 | ||
12328 | Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT | |
12329 | apply this optimization. */ | |
12330 | ||
12331 | for (irel = internal_relocs; irel < irelend; irel++) | |
12332 | { | |
12333 | /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region. | |
12334 | One we enter the begin of the region, we track all the LW/ST | |
12335 | instructions, so when we leave the region, we try to find | |
12336 | the best fp-base address for those LW/ST instructions. */ | |
12337 | ||
12338 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12339 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12340 | { | |
12341 | /* Begin of the region. */ | |
12342 | if (begin_rel) | |
695344c0 | 12343 | /* xgettext:c-format */ |
38f14ab8 | 12344 | _bfd_error_handler (_("%pB: nested OMIT_FP in %pA"), abfd, sec); |
35c08157 KLC |
12345 | |
12346 | begin_rel = irel; | |
12347 | nds32_fag_init (&fag_head); | |
1c8f6a4d | 12348 | ifc_inside = FALSE; |
35c08157 KLC |
12349 | } |
12350 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12351 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12352 | { | |
12353 | int accu; | |
1c8f6a4d | 12354 | struct nds32_fag *best_fag, *tmp_fag; |
35c08157 KLC |
12355 | int dist; |
12356 | ||
12357 | /* End of the region. | |
12358 | Check whether it is worth to do fp-as-gp. */ | |
12359 | ||
12360 | if (begin_rel == NULL) | |
12361 | { | |
695344c0 | 12362 | /* xgettext:c-format */ |
38f14ab8 AM |
12363 | _bfd_error_handler (_("%pB: unmatched OMIT_FP in %pA"), |
12364 | abfd, sec); | |
35c08157 KLC |
12365 | continue; |
12366 | } | |
12367 | ||
12368 | accu = nds32_fag_find_base (&fag_head, &best_fag); | |
12369 | ||
1c8f6a4d KLC |
12370 | /* Clean FP7U2_FLAG because they may set ever. */ |
12371 | tmp_fag = fag_head.next; | |
12372 | nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend); | |
12373 | ||
35c08157 KLC |
12374 | /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */ |
12375 | if (accu < FAG_THRESHOLD | |
12376 | || !nds32_fag_mark_relax (link_info, abfd, best_fag, | |
12377 | internal_relocs, irelend)) | |
12378 | { | |
12379 | /* Not worth to do fp-as-gp. */ | |
12380 | begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12381 | begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12382 | irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12383 | irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12384 | nds32_fag_free_list (&fag_head); | |
12385 | begin_rel = NULL; | |
12386 | continue; | |
12387 | } | |
12388 | ||
12389 | /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler, | |
12390 | so we use it to record the distance to the reloction of best | |
12391 | fp-base. */ | |
12392 | dist = best_fag->relas[0] - begin_rel; | |
12393 | BFD_ASSERT (dist > 0 && dist < 0xffffff); | |
12394 | /* Use high 16 bits of addend to record the _FP_BASE_ matched | |
12395 | relocation. And get the base value when relocating. */ | |
1c8f6a4d | 12396 | begin_rel->r_addend &= (0x1 << 16) - 1; |
35c08157 KLC |
12397 | begin_rel->r_addend |= dist << 16; |
12398 | ||
12399 | nds32_fag_free_list (&fag_head); | |
12400 | begin_rel = NULL; | |
12401 | } | |
12402 | ||
1c8f6a4d | 12403 | if (begin_rel == NULL || ifc_inside) |
35c08157 KLC |
12404 | /* Skip if we are not in the region of fp-as-gp. */ |
12405 | continue; | |
12406 | ||
12407 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA | |
12408 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA) | |
12409 | { | |
12410 | bfd_vma addr; | |
12411 | uint32_t insn; | |
12412 | ||
12413 | /* A gp-relative access is found. Insert it to the fag-list. */ | |
12414 | ||
12415 | /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */ | |
12416 | insn = bfd_getb32 (contents + irel->r_offset); | |
12417 | if (!N32_IS_RT3 (insn)) | |
12418 | continue; | |
12419 | ||
12420 | addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
12421 | nds32_fag_insert (&fag_head, addr, irel); | |
12422 | } | |
12423 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA) | |
12424 | { | |
12425 | begin_rel = NULL; | |
12426 | } | |
1c8f6a4d KLC |
12427 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA |
12428 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) | |
12429 | { | |
12430 | /* Suppress fp as gp when encounter ifc. */ | |
12431 | ifc_inside = TRUE; | |
12432 | } | |
35c08157 KLC |
12433 | } |
12434 | ||
12435 | return TRUE; | |
12436 | } | |
12437 | ||
12438 | /* Remove unused `la $fp, _FD_BASE_' instruction. */ | |
12439 | ||
12440 | static bfd_boolean | |
12441 | nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec, | |
12442 | Elf_Internal_Rela *internal_relocs, | |
12443 | Elf_Internal_Rela *irelend) | |
12444 | { | |
12445 | Elf_Internal_Rela *irel; | |
12446 | Elf_Internal_Shdr *symtab_hdr; | |
12447 | bfd_byte *contents = NULL; | |
12448 | nds32_elf_blank_t *relax_blank_list = NULL; | |
12449 | bfd_boolean result = TRUE; | |
12450 | bfd_boolean unused_region = FALSE; | |
12451 | ||
12452 | /* | |
12453 | NOTE: Disable fp-as-gp if we encounter ifcall relocations. | |
12454 | * R_NDS32_17IFC_PCREL_RELA | |
12455 | * R_NDS32_10IFCU_PCREL_RELA | |
12456 | ||
12457 | CASE?????????????? | |
12458 | */ | |
12459 | ||
12460 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
0c4bd9d9 | 12461 | nds32_get_section_contents (abfd, sec, &contents, TRUE); |
35c08157 KLC |
12462 | |
12463 | for (irel = internal_relocs; irel < irelend; irel++) | |
12464 | { | |
12465 | /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP | |
12466 | we marked to in previous pass. | |
12467 | DO NOT scan relocations again, since we've alreadly decided it | |
12468 | and set the flag. */ | |
12469 | const char *syname; | |
12470 | int syndx; | |
12471 | uint32_t insn; | |
12472 | ||
12473 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12474 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12475 | unused_region = TRUE; | |
12476 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12477 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12478 | unused_region = FALSE; | |
12479 | ||
12480 | /* We're not in the region. */ | |
12481 | if (!unused_region) | |
12482 | continue; | |
12483 | ||
12484 | /* _FP_BASE_ must be a GLOBAL symbol. */ | |
12485 | syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
12486 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
12487 | continue; | |
12488 | ||
12489 | /* The symbol name must be _FP_BASE_. */ | |
12490 | syname = elf_sym_hashes (abfd)[syndx]->root.root.string; | |
12491 | if (strcmp (syname, FP_BASE_NAME) != 0) | |
12492 | continue; | |
12493 | ||
12494 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA) | |
12495 | { | |
12496 | /* addi.gp $fp, -256 */ | |
12497 | insn = bfd_getb32 (contents + irel->r_offset); | |
12498 | if (insn != INSN_ADDIGP_TO_FP) | |
12499 | continue; | |
12500 | } | |
12501 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA) | |
12502 | { | |
12503 | /* addi $fp, $gp, -256 */ | |
12504 | insn = bfd_getb32 (contents + irel->r_offset); | |
12505 | if (insn != INSN_ADDI_GP_TO_FP) | |
12506 | continue; | |
12507 | } | |
12508 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA) | |
12509 | { | |
12510 | /* movi $fp, FP_BASE */ | |
12511 | insn = bfd_getb32 (contents + irel->r_offset); | |
12512 | if (insn != INSN_MOVI_TO_FP) | |
12513 | continue; | |
12514 | } | |
12515 | else | |
12516 | continue; | |
12517 | ||
12518 | /* We got here because a FP_BASE instruction is found. */ | |
12519 | if (!insert_nds32_elf_blank_recalc_total | |
12520 | (&relax_blank_list, irel->r_offset, 4)) | |
12521 | goto error_return; | |
12522 | } | |
12523 | ||
12524 | finish: | |
12525 | if (relax_blank_list) | |
12526 | { | |
12527 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
12528 | relax_blank_list = NULL; | |
12529 | } | |
12530 | return result; | |
12531 | ||
12532 | error_return: | |
12533 | result = FALSE; | |
12534 | goto finish; | |
12535 | } | |
1c8f6a4d KLC |
12536 | |
12537 | /* This is a version of bfd_generic_get_relocated_section_contents. | |
12538 | We need this variety because relaxation will modify the dwarf | |
12539 | infomation. When there is undefined symbol reference error mesage, | |
12540 | linker need to dump line number where the symbol be used. However | |
12541 | the address is be relaxed, it can not get the original dwarf contents. | |
12542 | The variety only modify function call for reading in the section. */ | |
12543 | ||
12544 | static bfd_byte * | |
12545 | nds32_elf_get_relocated_section_contents (bfd *abfd, | |
12546 | struct bfd_link_info *link_info, | |
12547 | struct bfd_link_order *link_order, | |
12548 | bfd_byte *data, | |
12549 | bfd_boolean relocatable, | |
12550 | asymbol **symbols) | |
12551 | { | |
12552 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
12553 | asection *input_section = link_order->u.indirect.section; | |
12554 | long reloc_size; | |
12555 | arelent **reloc_vector; | |
12556 | long reloc_count; | |
12557 | ||
12558 | reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
12559 | if (reloc_size < 0) | |
12560 | return NULL; | |
12561 | ||
12562 | /* Read in the section. */ | |
0c4bd9d9 | 12563 | if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE)) |
1c8f6a4d KLC |
12564 | return NULL; |
12565 | ||
12566 | if (reloc_size == 0) | |
12567 | return data; | |
12568 | ||
12569 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
12570 | if (reloc_vector == NULL) | |
12571 | return NULL; | |
12572 | ||
12573 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, | |
12574 | reloc_vector, symbols); | |
12575 | if (reloc_count < 0) | |
12576 | goto error_return; | |
12577 | ||
12578 | if (reloc_count > 0) | |
12579 | { | |
12580 | arelent **parent; | |
12581 | for (parent = reloc_vector; *parent != NULL; parent++) | |
12582 | { | |
12583 | char *error_message = NULL; | |
12584 | asymbol *symbol; | |
12585 | bfd_reloc_status_type r; | |
12586 | ||
12587 | symbol = *(*parent)->sym_ptr_ptr; | |
12588 | if (symbol->section && discarded_section (symbol->section)) | |
12589 | { | |
12590 | bfd_byte *p; | |
12591 | static reloc_howto_type none_howto | |
12592 | = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, | |
12593 | "unused", FALSE, 0, 0, FALSE); | |
12594 | ||
12595 | p = data + (*parent)->address * bfd_octets_per_byte (input_bfd); | |
12596 | _bfd_clear_contents ((*parent)->howto, input_bfd, input_section, | |
12597 | p); | |
12598 | (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
12599 | (*parent)->addend = 0; | |
12600 | (*parent)->howto = &none_howto; | |
12601 | r = bfd_reloc_ok; | |
12602 | } | |
12603 | else | |
12604 | r = bfd_perform_relocation (input_bfd, *parent, data, | |
12605 | input_section, | |
12606 | relocatable ? abfd : NULL, | |
12607 | &error_message); | |
12608 | ||
12609 | if (relocatable) | |
12610 | { | |
12611 | asection *os = input_section->output_section; | |
12612 | ||
12613 | /* A partial link, so keep the relocs. */ | |
12614 | os->orelocation[os->reloc_count] = *parent; | |
12615 | os->reloc_count++; | |
12616 | } | |
12617 | ||
12618 | if (r != bfd_reloc_ok) | |
12619 | { | |
12620 | switch (r) | |
12621 | { | |
12622 | case bfd_reloc_undefined: | |
1a72702b AM |
12623 | (*link_info->callbacks->undefined_symbol) |
12624 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
12625 | input_bfd, input_section, (*parent)->address, TRUE); | |
1c8f6a4d KLC |
12626 | break; |
12627 | case bfd_reloc_dangerous: | |
12628 | BFD_ASSERT (error_message != NULL); | |
1a72702b AM |
12629 | (*link_info->callbacks->reloc_dangerous) |
12630 | (link_info, error_message, | |
12631 | input_bfd, input_section, (*parent)->address); | |
1c8f6a4d KLC |
12632 | break; |
12633 | case bfd_reloc_overflow: | |
1a72702b AM |
12634 | (*link_info->callbacks->reloc_overflow) |
12635 | (link_info, NULL, | |
12636 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
12637 | (*parent)->howto->name, (*parent)->addend, | |
12638 | input_bfd, input_section, (*parent)->address); | |
1c8f6a4d KLC |
12639 | break; |
12640 | case bfd_reloc_outofrange: | |
12641 | /* PR ld/13730: | |
12642 | This error can result when processing some partially | |
12643 | complete binaries. Do not abort, but issue an error | |
12644 | message instead. */ | |
12645 | link_info->callbacks->einfo | |
695344c0 | 12646 | /* xgettext:c-format */ |
c1c8c1ef | 12647 | (_("%X%P: %pB(%pA): relocation \"%pR\" goes out of range\n"), |
1c8f6a4d KLC |
12648 | abfd, input_section, * parent); |
12649 | goto error_return; | |
12650 | ||
12651 | default: | |
12652 | abort (); | |
12653 | break; | |
12654 | } | |
12655 | } | |
12656 | } | |
12657 | } | |
12658 | ||
12659 | free (reloc_vector); | |
12660 | return data; | |
12661 | ||
12662 | error_return: | |
12663 | free (reloc_vector); | |
12664 | return NULL; | |
12665 | } | |
35c08157 | 12666 | \f |
35c08157 KLC |
12667 | |
12668 | #define ELF_ARCH bfd_arch_nds32 | |
12669 | #define ELF_MACHINE_CODE EM_NDS32 | |
12670 | #define ELF_MAXPAGESIZE 0x1000 | |
07d6d2b8 | 12671 | #define ELF_TARGET_ID NDS32_ELF_DATA |
35c08157 | 12672 | |
6d00b590 | 12673 | #define TARGET_BIG_SYM nds32_elf32_be_vec |
35c08157 | 12674 | #define TARGET_BIG_NAME "elf32-nds32be" |
6d00b590 | 12675 | #define TARGET_LITTLE_SYM nds32_elf32_le_vec |
35c08157 KLC |
12676 | #define TARGET_LITTLE_NAME "elf32-nds32le" |
12677 | ||
12678 | #define elf_info_to_howto nds32_info_to_howto | |
12679 | #define elf_info_to_howto_rel nds32_info_to_howto_rel | |
12680 | ||
12681 | #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create | |
12682 | #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data | |
12683 | #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data | |
12684 | #define bfd_elf32_bfd_relax_section nds32_elf_relax_section | |
12685 | #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags | |
12686 | ||
07d6d2b8 | 12687 | #define bfd_elf32_mkobject nds32_elf_mkobject |
35c08157 KLC |
12688 | #define elf_backend_action_discarded nds32_elf_action_discarded |
12689 | #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook | |
12690 | #define elf_backend_check_relocs nds32_elf_check_relocs | |
12691 | #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol | |
12692 | #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections | |
12693 | #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections | |
12694 | #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol | |
12695 | #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections | |
12696 | #define elf_backend_relocate_section nds32_elf_relocate_section | |
12697 | #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook | |
35c08157 KLC |
12698 | #define elf_backend_grok_prstatus nds32_elf_grok_prstatus |
12699 | #define elf_backend_grok_psinfo nds32_elf_grok_psinfo | |
12700 | #define elf_backend_reloc_type_class nds32_elf_reloc_type_class | |
12701 | #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol | |
12702 | #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook | |
12703 | #define elf_backend_output_arch_syms nds32_elf_output_arch_syms | |
12704 | #define elf_backend_object_p nds32_elf_object_p | |
12705 | #define elf_backend_final_write_processing nds32_elf_final_write_processing | |
12706 | #define elf_backend_special_sections nds32_elf_special_sections | |
1c8f6a4d | 12707 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
07d6d2b8 | 12708 | nds32_elf_get_relocated_section_contents |
35c08157 KLC |
12709 | |
12710 | #define elf_backend_can_gc_sections 1 | |
12711 | #define elf_backend_can_refcount 1 | |
12712 | #define elf_backend_want_got_plt 1 | |
12713 | #define elf_backend_plt_readonly 1 | |
12714 | #define elf_backend_want_plt_sym 0 | |
12715 | #define elf_backend_got_header_size 12 | |
12716 | #define elf_backend_may_use_rel_p 1 | |
12717 | #define elf_backend_default_use_rela_p 1 | |
12718 | #define elf_backend_may_use_rela_p 1 | |
64f52338 | 12719 | #define elf_backend_dtrel_excludes_plt 1 |
35c08157 KLC |
12720 | |
12721 | #include "elf32-target.h" | |
12722 | ||
12723 | #undef ELF_MAXPAGESIZE | |
12724 | #define ELF_MAXPAGESIZE 0x2000 | |
12725 | ||
12726 | #undef TARGET_BIG_SYM | |
6d00b590 | 12727 | #define TARGET_BIG_SYM nds32_elf32_linux_be_vec |
35c08157 KLC |
12728 | #undef TARGET_BIG_NAME |
12729 | #define TARGET_BIG_NAME "elf32-nds32be-linux" | |
12730 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 12731 | #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec |
35c08157 KLC |
12732 | #undef TARGET_LITTLE_NAME |
12733 | #define TARGET_LITTLE_NAME "elf32-nds32le-linux" | |
12734 | #undef elf32_bed | |
12735 | #define elf32_bed elf32_nds32_lin_bed | |
12736 | ||
12737 | #include "elf32-target.h" |