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35c08157 | 1 | /* NDS32-specific support for 32-bit ELF. |
4b95cf5c | 2 | Copyright (C) 2012-2014 Free Software Foundation, Inc. |
35c08157 KLC |
3 | Contributed by Andes Technology Corporation. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA | |
1c8f6a4d | 20 | 02110-1301, USA. */ |
35c08157 KLC |
21 | |
22 | ||
23 | #include "sysdep.h" | |
24 | #include "bfd.h" | |
25 | #include "bfd_stdint.h" | |
26 | #include "bfdlink.h" | |
27 | #include "libbfd.h" | |
28 | #include "elf-bfd.h" | |
29 | #include "libiberty.h" | |
30 | #include "bfd_stdint.h" | |
31 | #include "elf/nds32.h" | |
32 | #include "opcode/nds32.h" | |
33 | #include "elf32-nds32.h" | |
34 | #include "opcode/cgen.h" | |
35 | #include "../opcodes/nds32-opc.h" | |
36 | ||
37 | /* Relocation HOWTO functions. */ | |
38 | static bfd_reloc_status_type nds32_elf_ignore_reloc | |
39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
40 | static bfd_reloc_status_type nds32_elf_9_pcrel_reloc | |
41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
42 | static bfd_reloc_status_type nds32_elf_hi20_reloc | |
43 | (bfd *, arelent *, asymbol *, void *, | |
44 | asection *, bfd *, char **); | |
45 | static bfd_reloc_status_type nds32_elf_lo12_reloc | |
46 | (bfd *, arelent *, asymbol *, void *, | |
47 | asection *, bfd *, char **); | |
48 | static bfd_reloc_status_type nds32_elf_generic_reloc | |
49 | (bfd *, arelent *, asymbol *, void *, | |
50 | asection *, bfd *, char **); | |
51 | static bfd_reloc_status_type nds32_elf_sda15_reloc | |
52 | (bfd *, arelent *, asymbol *, void *, | |
53 | asection *, bfd *, char **); | |
54 | ||
55 | /* Helper functions for HOWTO. */ | |
56 | static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc | |
57 | (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma, | |
58 | asection *, bfd_vma, bfd_vma); | |
59 | static void nds32_elf_relocate_hi20 | |
60 | (bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, bfd_vma); | |
61 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_table_lookup | |
62 | (enum elf_nds32_reloc_type); | |
63 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup | |
64 | (bfd *, bfd_reloc_code_real_type); | |
65 | ||
66 | /* Target hooks. */ | |
67 | static void nds32_info_to_howto_rel | |
68 | (bfd *, arelent *, Elf_Internal_Rela *dst); | |
69 | static void nds32_info_to_howto | |
70 | (bfd *, arelent *, Elf_Internal_Rela *dst); | |
71 | static bfd_boolean nds32_elf_add_symbol_hook | |
72 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **, | |
73 | flagword *, asection **, bfd_vma *); | |
74 | static bfd_boolean nds32_elf_relocate_section | |
75 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, | |
76 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); | |
77 | static bfd_boolean nds32_elf_object_p (bfd *); | |
78 | static void nds32_elf_final_write_processing (bfd *, bfd_boolean); | |
79 | static bfd_boolean nds32_elf_set_private_flags (bfd *, flagword); | |
80 | static bfd_boolean nds32_elf_merge_private_bfd_data (bfd *, bfd *); | |
81 | static bfd_boolean nds32_elf_print_private_bfd_data (bfd *, void *); | |
82 | static bfd_boolean nds32_elf_gc_sweep_hook | |
83 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
84 | static bfd_boolean nds32_elf_check_relocs | |
85 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); | |
86 | static asection *nds32_elf_gc_mark_hook | |
87 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, | |
88 | struct elf_link_hash_entry *, Elf_Internal_Sym *); | |
89 | static bfd_boolean nds32_elf_adjust_dynamic_symbol | |
90 | (struct bfd_link_info *, struct elf_link_hash_entry *); | |
91 | static bfd_boolean nds32_elf_size_dynamic_sections | |
92 | (bfd *, struct bfd_link_info *); | |
93 | static bfd_boolean nds32_elf_create_dynamic_sections | |
94 | (bfd *, struct bfd_link_info *); | |
95 | static bfd_boolean nds32_elf_finish_dynamic_sections | |
96 | (bfd *, struct bfd_link_info *info); | |
97 | static bfd_boolean nds32_elf_finish_dynamic_symbol | |
98 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, | |
99 | Elf_Internal_Sym *); | |
1c8f6a4d | 100 | static bfd_boolean nds32_elf_mkobject (bfd *); |
35c08157 KLC |
101 | |
102 | /* Nds32 helper functions. */ | |
103 | static bfd_reloc_status_type nds32_elf_final_sda_base | |
104 | (bfd *, struct bfd_link_info *, bfd_vma *, bfd_boolean); | |
105 | static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *, void *); | |
106 | static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *, void *); | |
107 | static Elf_Internal_Rela *find_relocs_at_address | |
108 | (Elf_Internal_Rela *, Elf_Internal_Rela *, | |
109 | Elf_Internal_Rela *, enum elf_nds32_reloc_type); | |
110 | static bfd_vma calculate_memory_address | |
111 | (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); | |
112 | static int nds32_get_section_contents (bfd *, asection *, bfd_byte **); | |
113 | static bfd_boolean nds32_elf_ex9_build_hash_table | |
114 | (bfd *, asection *, struct bfd_link_info *); | |
1c8f6a4d KLC |
115 | static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *); |
116 | static void nds32_elf_ex9_import_table (struct bfd_link_info *); | |
117 | static void nds32_elf_ex9_finish (struct bfd_link_info *); | |
118 | static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *); | |
35c08157 | 119 | static void nds32_elf_get_insn_with_reg |
1c8f6a4d | 120 | (Elf_Internal_Rela *, uint32_t, uint32_t *); |
35c08157 KLC |
121 | static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED, |
122 | Elf_Internal_Sym **); | |
123 | static bfd_boolean nds32_elf_ex9_replace_instruction | |
124 | (struct bfd_link_info *, bfd *, asection *); | |
125 | static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *, | |
126 | asection *); | |
1c8f6a4d | 127 | static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *); |
35c08157 | 128 | static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *); |
1c8f6a4d | 129 | static bfd_boolean nds32_elf_ifc_reloc (void); |
35c08157 KLC |
130 | static bfd_boolean nds32_relax_fp_as_gp |
131 | (struct bfd_link_info *link_info, bfd *abfd, asection *sec, | |
132 | Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend, | |
133 | Elf_Internal_Sym *isymbuf); | |
134 | static bfd_boolean nds32_fag_remove_unused_fpbase | |
135 | (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs, | |
136 | Elf_Internal_Rela *irelend); | |
1c8f6a4d KLC |
137 | static bfd_byte * |
138 | nds32_elf_get_relocated_section_contents (bfd *abfd, | |
139 | struct bfd_link_info *link_info, | |
140 | struct bfd_link_order *link_order, | |
141 | bfd_byte *data, | |
142 | bfd_boolean relocatable, | |
143 | asymbol **symbols); | |
35c08157 KLC |
144 | |
145 | enum | |
146 | { | |
147 | MACH_V1 = bfd_mach_n1h, | |
148 | MACH_V2 = bfd_mach_n1h_v2, | |
149 | MACH_V3 = bfd_mach_n1h_v3, | |
150 | MACH_V3M = bfd_mach_n1h_v3m | |
151 | }; | |
152 | ||
153 | #define MIN(a, b) ((a) > (b) ? (b) : (a)) | |
154 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) | |
155 | ||
156 | /* The name of the dynamic interpreter. This is put in the .interp | |
157 | section. */ | |
158 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
159 | ||
160 | /* The nop opcode we use. */ | |
161 | #define NDS32_NOP32 0x40000009 | |
162 | #define NDS32_NOP16 0x9200 | |
163 | ||
164 | /* The size in bytes of an entry in the procedure linkage table. */ | |
165 | #define PLT_ENTRY_SIZE 24 | |
166 | #define PLT_HEADER_SIZE 24 | |
167 | ||
168 | /* The first entry in a procedure linkage table are reserved, | |
169 | and the initial contents are unimportant (we zero them out). | |
170 | Subsequent entries look like this. */ | |
171 | #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */ | |
172 | #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */ | |
173 | #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */ | |
174 | #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */ | |
175 | #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */ | |
176 | ||
177 | /* $ta is change to $r15 (from $r25). */ | |
178 | #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */ | |
179 | #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */ | |
180 | #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */ | |
181 | #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */ | |
182 | #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */ | |
183 | #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */ | |
184 | ||
185 | #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */ | |
186 | #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */ | |
187 | #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */ | |
188 | #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
189 | #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */ | |
190 | ||
191 | #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */ | |
192 | #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */ | |
193 | #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */ | |
194 | #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */ | |
195 | #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */ | |
196 | #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */ | |
197 | ||
1c8f6a4d KLC |
198 | /* These are macros used to get the relocation accurate value. */ |
199 | #define ACCURATE_8BIT_S1 (0x100) | |
200 | #define ACCURATE_U9BIT_S1 (0x400) | |
201 | #define ACCURATE_12BIT_S1 (0x2000) | |
202 | #define ACCURATE_14BIT_S1 (0x4000) | |
203 | #define ACCURATE_19BIT (0x40000) | |
204 | ||
205 | /* These are macros used to get the relocation conservative value. */ | |
206 | #define CONSERVATIVE_8BIT_S1 (0x100 - 4) | |
207 | #define CONSERVATIVE_14BIT_S1 (0x4000 - 4) | |
208 | #define CONSERVATIVE_16BIT_S1 (0x10000 - 4) | |
209 | #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4) | |
210 | /* These must be more conservative because the address may be in | |
211 | different segment. */ | |
212 | #define CONSERVATIVE_15BIT (0x4000 - 0x1000) | |
213 | #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000) | |
214 | #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000) | |
215 | #define CONSERVATIVE_19BIT (0x40000 - 0x1000) | |
216 | #define CONSERVATIVE_20BIT (0x80000 - 0x1000) | |
217 | ||
35c08157 KLC |
218 | /* Size of small data/bss sections, used to calculate SDA_BASE. */ |
219 | static long got_size = 0; | |
220 | static int is_SDA_BASE_set = 0; | |
221 | static int is_ITB_BASE_set = 0; | |
222 | ||
35c08157 KLC |
223 | /* Convert ELF-VER in eflags to string for debugging purpose. */ |
224 | static const char *const nds32_elfver_strtab[] = | |
225 | { | |
226 | "ELF-1.2", | |
227 | "ELF-1.3", | |
228 | "ELF-1.4", | |
229 | }; | |
230 | ||
231 | /* The nds32 linker needs to keep track of the number of relocs that it | |
232 | decides to copy in check_relocs for each symbol. This is so that | |
233 | it can discard PC relative relocs if it doesn't need them when | |
234 | linking with -Bsymbolic. We store the information in a field | |
235 | extending the regular ELF linker hash table. */ | |
236 | ||
237 | /* This structure keeps track of the number of PC relative relocs we | |
238 | have copied for a given symbol. */ | |
239 | ||
240 | struct elf_nds32_pcrel_relocs_copied | |
241 | { | |
242 | /* Next section. */ | |
243 | struct elf_nds32_pcrel_relocs_copied *next; | |
244 | /* A section in dynobj. */ | |
245 | asection *section; | |
246 | /* Number of relocs copied in this section. */ | |
247 | bfd_size_type count; | |
248 | }; | |
249 | ||
250 | /* The sh linker needs to keep track of the number of relocs that it | |
251 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
252 | This is so that it can later discard them if they are found to be | |
253 | unnecessary. We store the information in a field extending the | |
254 | regular ELF linker hash table. */ | |
255 | ||
256 | struct elf_nds32_dyn_relocs | |
257 | { | |
258 | struct elf_nds32_dyn_relocs *next; | |
259 | ||
260 | /* The input section of the reloc. */ | |
261 | asection *sec; | |
262 | ||
263 | /* Total number of relocs copied for the input section. */ | |
264 | bfd_size_type count; | |
265 | ||
266 | /* Number of pc-relative relocs copied for the input section. */ | |
267 | bfd_size_type pc_count; | |
268 | }; | |
269 | ||
270 | /* Nds32 ELF linker hash entry. */ | |
271 | ||
272 | struct elf_nds32_link_hash_entry | |
273 | { | |
274 | struct elf_link_hash_entry root; | |
275 | ||
276 | /* Track dynamic relocs copied for this symbol. */ | |
277 | struct elf_nds32_dyn_relocs *dyn_relocs; | |
1c8f6a4d KLC |
278 | |
279 | /* For checking relocation type. */ | |
280 | #define GOT_UNKNOWN 0 | |
281 | #define GOT_NORMAL 1 | |
282 | #define GOT_TLS_IE 2 | |
283 | unsigned int tls_type; | |
35c08157 KLC |
284 | }; |
285 | ||
286 | /* Get the nds32 ELF linker hash table from a link_info structure. */ | |
287 | ||
288 | #define FP_BASE_NAME "_FP_BASE_" | |
289 | static int check_start_export_sym = 0; | |
290 | static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */ | |
291 | ||
1c8f6a4d KLC |
292 | /* The offset for executable tls relaxation. */ |
293 | #define TP_OFFSET 0x0 | |
294 | ||
295 | struct elf_nds32_obj_tdata | |
296 | { | |
297 | struct elf_obj_tdata root; | |
298 | ||
299 | /* tls_type for each local got entry. */ | |
300 | char *local_got_tls_type; | |
301 | }; | |
302 | ||
303 | #define elf_nds32_tdata(bfd) \ | |
304 | ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any) | |
305 | ||
306 | #define elf32_nds32_local_got_tls_type(bfd) \ | |
307 | (elf_nds32_tdata (bfd)->local_got_tls_type) | |
308 | ||
309 | #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent)) | |
310 | ||
311 | static bfd_boolean | |
312 | nds32_elf_mkobject (bfd *abfd) | |
313 | { | |
314 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata), | |
315 | NDS32_ELF_DATA); | |
316 | } | |
317 | ||
35c08157 KLC |
318 | /* Relocations used for relocation. */ |
319 | static reloc_howto_type nds32_elf_howto_table[] = | |
320 | { | |
321 | /* This reloc does nothing. */ | |
322 | HOWTO (R_NDS32_NONE, /* type */ | |
323 | 0, /* rightshift */ | |
324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 32, /* bitsize */ | |
326 | FALSE, /* pc_relative */ | |
327 | 0, /* bitpos */ | |
328 | complain_overflow_bitfield, /* complain_on_overflow */ | |
329 | bfd_elf_generic_reloc, /* special_function */ | |
330 | "R_NDS32_NONE", /* name */ | |
331 | FALSE, /* partial_inplace */ | |
332 | 0, /* src_mask */ | |
333 | 0, /* dst_mask */ | |
334 | FALSE), /* pcrel_offset */ | |
335 | ||
336 | /* A 16 bit absolute relocation. */ | |
337 | HOWTO (R_NDS32_16, /* type */ | |
338 | 0, /* rightshift */ | |
339 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
340 | 16, /* bitsize */ | |
341 | FALSE, /* pc_relative */ | |
342 | 0, /* bitpos */ | |
343 | complain_overflow_bitfield, /* complain_on_overflow */ | |
344 | nds32_elf_generic_reloc, /* special_function */ | |
345 | "R_NDS32_16", /* name */ | |
346 | FALSE, /* partial_inplace */ | |
347 | 0xffff, /* src_mask */ | |
348 | 0xffff, /* dst_mask */ | |
349 | FALSE), /* pcrel_offset */ | |
350 | ||
351 | /* A 32 bit absolute relocation. */ | |
352 | HOWTO (R_NDS32_32, /* type */ | |
353 | 0, /* rightshift */ | |
354 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
355 | 32, /* bitsize */ | |
356 | FALSE, /* pc_relative */ | |
357 | 0, /* bitpos */ | |
358 | complain_overflow_bitfield, /* complain_on_overflow */ | |
359 | nds32_elf_generic_reloc, /* special_function */ | |
360 | "R_NDS32_32", /* name */ | |
361 | FALSE, /* partial_inplace */ | |
362 | 0xffffffff, /* src_mask */ | |
363 | 0xffffffff, /* dst_mask */ | |
364 | FALSE), /* pcrel_offset */ | |
365 | ||
366 | /* A 20 bit address. */ | |
367 | HOWTO (R_NDS32_20, /* type */ | |
368 | 0, /* rightshift */ | |
369 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
370 | 20, /* bitsize */ | |
371 | FALSE, /* pc_relative */ | |
372 | 0, /* bitpos */ | |
373 | complain_overflow_unsigned, /* complain_on_overflow */ | |
374 | nds32_elf_generic_reloc, /* special_function */ | |
375 | "R_NDS32_20", /* name */ | |
376 | FALSE, /* partial_inplace */ | |
377 | 0xfffff, /* src_mask */ | |
378 | 0xfffff, /* dst_mask */ | |
379 | FALSE), /* pcrel_offset */ | |
380 | ||
381 | /* An PC Relative 9-bit relocation, shifted by 2. | |
382 | This reloc is complicated because relocations are relative to pc & -4. | |
383 | i.e. branches in the right insn slot use the address of the left insn | |
384 | slot for pc. */ | |
385 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
386 | Branch relaxing in the assembler can store the addend in the insn, | |
387 | and if bfd_install_relocation gets called the addend may get added | |
388 | again. */ | |
389 | HOWTO (R_NDS32_9_PCREL, /* type */ | |
390 | 1, /* rightshift */ | |
391 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
392 | 8, /* bitsize */ | |
393 | TRUE, /* pc_relative */ | |
394 | 0, /* bitpos */ | |
395 | complain_overflow_signed, /* complain_on_overflow */ | |
396 | nds32_elf_9_pcrel_reloc, /* special_function */ | |
397 | "R_NDS32_9_PCREL", /* name */ | |
398 | FALSE, /* partial_inplace */ | |
399 | 0xff, /* src_mask */ | |
400 | 0xff, /* dst_mask */ | |
401 | TRUE), /* pcrel_offset */ | |
402 | ||
403 | /* A relative 15 bit relocation, right shifted by 1. */ | |
404 | HOWTO (R_NDS32_15_PCREL, /* type */ | |
405 | 1, /* rightshift */ | |
406 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
407 | 14, /* bitsize */ | |
408 | TRUE, /* pc_relative */ | |
409 | 0, /* bitpos */ | |
410 | complain_overflow_signed, /* complain_on_overflow */ | |
411 | bfd_elf_generic_reloc, /* special_function */ | |
412 | "R_NDS32_15_PCREL", /* name */ | |
413 | FALSE, /* partial_inplace */ | |
414 | 0x3fff, /* src_mask */ | |
415 | 0x3fff, /* dst_mask */ | |
416 | TRUE), /* pcrel_offset */ | |
417 | ||
418 | /* A relative 17 bit relocation, right shifted by 1. */ | |
419 | HOWTO (R_NDS32_17_PCREL, /* type */ | |
420 | 1, /* rightshift */ | |
421 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
422 | 16, /* bitsize */ | |
423 | TRUE, /* pc_relative */ | |
424 | 0, /* bitpos */ | |
425 | complain_overflow_signed, /* complain_on_overflow */ | |
426 | bfd_elf_generic_reloc, /* special_function */ | |
427 | "R_NDS32_17_PCREL", /* name */ | |
428 | FALSE, /* partial_inplace */ | |
429 | 0xffff, /* src_mask */ | |
430 | 0xffff, /* dst_mask */ | |
431 | TRUE), /* pcrel_offset */ | |
432 | ||
433 | /* A relative 25 bit relocation, right shifted by 1. */ | |
434 | /* ??? It's not clear whether this should have partial_inplace set or not. | |
435 | Branch relaxing in the assembler can store the addend in the insn, | |
436 | and if bfd_install_relocation gets called the addend may get added | |
437 | again. */ | |
438 | HOWTO (R_NDS32_25_PCREL, /* type */ | |
439 | 1, /* rightshift */ | |
440 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
441 | 24, /* bitsize */ | |
442 | TRUE, /* pc_relative */ | |
443 | 0, /* bitpos */ | |
444 | complain_overflow_signed, /* complain_on_overflow */ | |
445 | bfd_elf_generic_reloc, /* special_function */ | |
446 | "R_NDS32_25_PCREL", /* name */ | |
447 | FALSE, /* partial_inplace */ | |
448 | 0xffffff, /* src_mask */ | |
449 | 0xffffff, /* dst_mask */ | |
450 | TRUE), /* pcrel_offset */ | |
451 | ||
452 | /* High 20 bits of address when lower 12 is or'd in. */ | |
453 | HOWTO (R_NDS32_HI20, /* type */ | |
454 | 12, /* rightshift */ | |
455 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
456 | 20, /* bitsize */ | |
457 | FALSE, /* pc_relative */ | |
458 | 0, /* bitpos */ | |
459 | complain_overflow_dont,/* complain_on_overflow */ | |
460 | nds32_elf_hi20_reloc, /* special_function */ | |
461 | "R_NDS32_HI20", /* name */ | |
462 | FALSE, /* partial_inplace */ | |
463 | 0x000fffff, /* src_mask */ | |
464 | 0x000fffff, /* dst_mask */ | |
465 | FALSE), /* pcrel_offset */ | |
466 | ||
467 | /* Lower 12 bits of address. */ | |
468 | HOWTO (R_NDS32_LO12S3, /* type */ | |
469 | 3, /* rightshift */ | |
470 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
471 | 9, /* bitsize */ | |
472 | FALSE, /* pc_relative */ | |
473 | 0, /* bitpos */ | |
474 | complain_overflow_dont,/* complain_on_overflow */ | |
475 | nds32_elf_lo12_reloc, /* special_function */ | |
476 | "R_NDS32_LO12S3", /* name */ | |
477 | FALSE, /* partial_inplace */ | |
478 | 0x000001ff, /* src_mask */ | |
479 | 0x000001ff, /* dst_mask */ | |
480 | FALSE), /* pcrel_offset */ | |
481 | ||
482 | /* Lower 12 bits of address. */ | |
483 | HOWTO (R_NDS32_LO12S2, /* type */ | |
484 | 2, /* rightshift */ | |
485 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
486 | 10, /* bitsize */ | |
487 | FALSE, /* pc_relative */ | |
488 | 0, /* bitpos */ | |
489 | complain_overflow_dont,/* complain_on_overflow */ | |
490 | nds32_elf_lo12_reloc, /* special_function */ | |
491 | "R_NDS32_LO12S2", /* name */ | |
492 | FALSE, /* partial_inplace */ | |
493 | 0x000003ff, /* src_mask */ | |
494 | 0x000003ff, /* dst_mask */ | |
495 | FALSE), /* pcrel_offset */ | |
496 | ||
497 | /* Lower 12 bits of address. */ | |
498 | HOWTO (R_NDS32_LO12S1, /* type */ | |
499 | 1, /* rightshift */ | |
500 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
501 | 11, /* bitsize */ | |
502 | FALSE, /* pc_relative */ | |
503 | 0, /* bitpos */ | |
504 | complain_overflow_dont,/* complain_on_overflow */ | |
505 | nds32_elf_lo12_reloc, /* special_function */ | |
506 | "R_NDS32_LO12S1", /* name */ | |
507 | FALSE, /* partial_inplace */ | |
508 | 0x000007ff, /* src_mask */ | |
509 | 0x000007ff, /* dst_mask */ | |
510 | FALSE), /* pcrel_offset */ | |
511 | ||
512 | /* Lower 12 bits of address. */ | |
513 | HOWTO (R_NDS32_LO12S0, /* type */ | |
514 | 0, /* rightshift */ | |
515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
516 | 12, /* bitsize */ | |
517 | FALSE, /* pc_relative */ | |
518 | 0, /* bitpos */ | |
519 | complain_overflow_dont,/* complain_on_overflow */ | |
520 | nds32_elf_lo12_reloc, /* special_function */ | |
521 | "R_NDS32_LO12S0", /* name */ | |
522 | FALSE, /* partial_inplace */ | |
523 | 0x00000fff, /* src_mask */ | |
524 | 0x00000fff, /* dst_mask */ | |
525 | FALSE), /* pcrel_offset */ | |
526 | ||
527 | /* Small data area 15 bits offset. */ | |
528 | HOWTO (R_NDS32_SDA15S3, /* type */ | |
529 | 3, /* rightshift */ | |
530 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
531 | 15, /* bitsize */ | |
532 | FALSE, /* pc_relative */ | |
533 | 0, /* bitpos */ | |
534 | complain_overflow_signed, /* complain_on_overflow */ | |
535 | nds32_elf_sda15_reloc, /* special_function */ | |
536 | "R_NDS32_SDA15S3", /* name */ | |
537 | FALSE, /* partial_inplace */ | |
538 | 0x00007fff, /* src_mask */ | |
539 | 0x00007fff, /* dst_mask */ | |
540 | FALSE), /* pcrel_offset */ | |
541 | ||
542 | /* Small data area 15 bits offset. */ | |
543 | HOWTO (R_NDS32_SDA15S2, /* type */ | |
544 | 2, /* rightshift */ | |
545 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
546 | 15, /* bitsize */ | |
547 | FALSE, /* pc_relative */ | |
548 | 0, /* bitpos */ | |
549 | complain_overflow_signed, /* complain_on_overflow */ | |
550 | nds32_elf_sda15_reloc, /* special_function */ | |
551 | "R_NDS32_SDA15S2", /* name */ | |
552 | FALSE, /* partial_inplace */ | |
553 | 0x00007fff, /* src_mask */ | |
554 | 0x00007fff, /* dst_mask */ | |
555 | FALSE), /* pcrel_offset */ | |
556 | ||
557 | /* Small data area 15 bits offset. */ | |
558 | HOWTO (R_NDS32_SDA15S1, /* type */ | |
559 | 1, /* rightshift */ | |
560 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
561 | 15, /* bitsize */ | |
562 | FALSE, /* pc_relative */ | |
563 | 0, /* bitpos */ | |
564 | complain_overflow_signed, /* complain_on_overflow */ | |
565 | nds32_elf_sda15_reloc, /* special_function */ | |
566 | "R_NDS32_SDA15S1", /* name */ | |
567 | FALSE, /* partial_inplace */ | |
568 | 0x00007fff, /* src_mask */ | |
569 | 0x00007fff, /* dst_mask */ | |
570 | FALSE), /* pcrel_offset */ | |
571 | ||
572 | /* Small data area 15 bits offset. */ | |
573 | HOWTO (R_NDS32_SDA15S0, /* type */ | |
574 | 0, /* rightshift */ | |
575 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
576 | 15, /* bitsize */ | |
577 | FALSE, /* pc_relative */ | |
578 | 0, /* bitpos */ | |
579 | complain_overflow_signed, /* complain_on_overflow */ | |
580 | nds32_elf_sda15_reloc, /* special_function */ | |
581 | "R_NDS32_SDA15S0", /* name */ | |
582 | FALSE, /* partial_inplace */ | |
583 | 0x00007fff, /* src_mask */ | |
584 | 0x00007fff, /* dst_mask */ | |
585 | FALSE), /* pcrel_offset */ | |
586 | ||
587 | /* GNU extension to record C++ vtable hierarchy */ | |
588 | HOWTO (R_NDS32_GNU_VTINHERIT, /* type */ | |
589 | 0, /* rightshift */ | |
590 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
591 | 0, /* bitsize */ | |
592 | FALSE, /* pc_relative */ | |
593 | 0, /* bitpos */ | |
594 | complain_overflow_dont,/* complain_on_overflow */ | |
595 | NULL, /* special_function */ | |
596 | "R_NDS32_GNU_VTINHERIT", /* name */ | |
597 | FALSE, /* partial_inplace */ | |
598 | 0, /* src_mask */ | |
599 | 0, /* dst_mask */ | |
600 | FALSE), /* pcrel_offset */ | |
601 | ||
602 | /* GNU extension to record C++ vtable member usage */ | |
603 | HOWTO (R_NDS32_GNU_VTENTRY, /* type */ | |
604 | 0, /* rightshift */ | |
605 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
606 | 0, /* bitsize */ | |
607 | FALSE, /* pc_relative */ | |
608 | 0, /* bitpos */ | |
609 | complain_overflow_dont,/* complain_on_overflow */ | |
610 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
611 | "R_NDS32_GNU_VTENTRY", /* name */ | |
612 | FALSE, /* partial_inplace */ | |
613 | 0, /* src_mask */ | |
614 | 0, /* dst_mask */ | |
615 | FALSE), /* pcrel_offset */ | |
616 | ||
617 | /* A 16 bit absolute relocation. */ | |
618 | HOWTO (R_NDS32_16_RELA, /* type */ | |
619 | 0, /* rightshift */ | |
620 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
621 | 16, /* bitsize */ | |
622 | FALSE, /* pc_relative */ | |
623 | 0, /* bitpos */ | |
624 | complain_overflow_bitfield, /* complain_on_overflow */ | |
625 | bfd_elf_generic_reloc, /* special_function */ | |
626 | "R_NDS32_16_RELA", /* name */ | |
627 | FALSE, /* partial_inplace */ | |
628 | 0xffff, /* src_mask */ | |
629 | 0xffff, /* dst_mask */ | |
630 | FALSE), /* pcrel_offset */ | |
631 | ||
632 | /* A 32 bit absolute relocation. */ | |
633 | HOWTO (R_NDS32_32_RELA, /* type */ | |
634 | 0, /* rightshift */ | |
635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
636 | 32, /* bitsize */ | |
637 | FALSE, /* pc_relative */ | |
638 | 0, /* bitpos */ | |
639 | complain_overflow_bitfield, /* complain_on_overflow */ | |
640 | bfd_elf_generic_reloc, /* special_function */ | |
641 | "R_NDS32_32_RELA", /* name */ | |
642 | FALSE, /* partial_inplace */ | |
643 | 0xffffffff, /* src_mask */ | |
644 | 0xffffffff, /* dst_mask */ | |
645 | FALSE), /* pcrel_offset */ | |
646 | ||
647 | /* A 20 bit address. */ | |
648 | HOWTO (R_NDS32_20_RELA, /* type */ | |
649 | 0, /* rightshift */ | |
650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
651 | 20, /* bitsize */ | |
652 | FALSE, /* pc_relative */ | |
653 | 0, /* bitpos */ | |
654 | complain_overflow_signed, /* complain_on_overflow */ | |
655 | bfd_elf_generic_reloc, /* special_function */ | |
656 | "R_NDS32_20_RELA", /* name */ | |
657 | FALSE, /* partial_inplace */ | |
658 | 0xfffff, /* src_mask */ | |
659 | 0xfffff, /* dst_mask */ | |
660 | FALSE), /* pcrel_offset */ | |
661 | ||
662 | HOWTO (R_NDS32_9_PCREL_RELA, /* type */ | |
663 | 1, /* rightshift */ | |
664 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
665 | 8, /* bitsize */ | |
666 | TRUE, /* pc_relative */ | |
667 | 0, /* bitpos */ | |
668 | complain_overflow_signed, /* complain_on_overflow */ | |
669 | bfd_elf_generic_reloc, /* special_function */ | |
670 | "R_NDS32_9_PCREL_RELA",/* name */ | |
671 | FALSE, /* partial_inplace */ | |
672 | 0xff, /* src_mask */ | |
673 | 0xff, /* dst_mask */ | |
674 | TRUE), /* pcrel_offset */ | |
675 | ||
676 | /* A relative 15 bit relocation, right shifted by 1. */ | |
677 | HOWTO (R_NDS32_15_PCREL_RELA, /* type */ | |
678 | 1, /* rightshift */ | |
679 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
680 | 14, /* bitsize */ | |
681 | TRUE, /* pc_relative */ | |
682 | 0, /* bitpos */ | |
683 | complain_overflow_signed, /* complain_on_overflow */ | |
684 | bfd_elf_generic_reloc, /* special_function */ | |
685 | "R_NDS32_15_PCREL_RELA", /* name */ | |
686 | FALSE, /* partial_inplace */ | |
687 | 0x3fff, /* src_mask */ | |
688 | 0x3fff, /* dst_mask */ | |
689 | TRUE), /* pcrel_offset */ | |
690 | ||
691 | /* A relative 17 bit relocation, right shifted by 1. */ | |
692 | HOWTO (R_NDS32_17_PCREL_RELA, /* type */ | |
693 | 1, /* rightshift */ | |
694 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
695 | 16, /* bitsize */ | |
696 | TRUE, /* pc_relative */ | |
697 | 0, /* bitpos */ | |
698 | complain_overflow_signed, /* complain_on_overflow */ | |
699 | bfd_elf_generic_reloc, /* special_function */ | |
700 | "R_NDS32_17_PCREL_RELA", /* name */ | |
701 | FALSE, /* partial_inplace */ | |
702 | 0xffff, /* src_mask */ | |
703 | 0xffff, /* dst_mask */ | |
704 | TRUE), /* pcrel_offset */ | |
705 | ||
706 | /* A relative 25 bit relocation, right shifted by 2. */ | |
707 | HOWTO (R_NDS32_25_PCREL_RELA, /* type */ | |
708 | 1, /* rightshift */ | |
709 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
710 | 24, /* bitsize */ | |
711 | TRUE, /* pc_relative */ | |
712 | 0, /* bitpos */ | |
713 | complain_overflow_signed, /* complain_on_overflow */ | |
714 | bfd_elf_generic_reloc, /* special_function */ | |
715 | "R_NDS32_25_PCREL_RELA", /* name */ | |
716 | FALSE, /* partial_inplace */ | |
717 | 0xffffff, /* src_mask */ | |
718 | 0xffffff, /* dst_mask */ | |
719 | TRUE), /* pcrel_offset */ | |
720 | ||
721 | /* High 20 bits of address when lower 16 is or'd in. */ | |
722 | HOWTO (R_NDS32_HI20_RELA, /* type */ | |
723 | 12, /* rightshift */ | |
724 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
725 | 20, /* bitsize */ | |
726 | FALSE, /* pc_relative */ | |
727 | 0, /* bitpos */ | |
728 | complain_overflow_dont,/* complain_on_overflow */ | |
729 | bfd_elf_generic_reloc, /* special_function */ | |
730 | "R_NDS32_HI20_RELA", /* name */ | |
731 | FALSE, /* partial_inplace */ | |
732 | 0x000fffff, /* src_mask */ | |
733 | 0x000fffff, /* dst_mask */ | |
734 | FALSE), /* pcrel_offset */ | |
735 | ||
736 | /* Lower 12 bits of address. */ | |
737 | HOWTO (R_NDS32_LO12S3_RELA, /* type */ | |
738 | 3, /* rightshift */ | |
739 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
740 | 9, /* bitsize */ | |
741 | FALSE, /* pc_relative */ | |
742 | 0, /* bitpos */ | |
743 | complain_overflow_dont,/* complain_on_overflow */ | |
744 | bfd_elf_generic_reloc, /* special_function */ | |
745 | "R_NDS32_LO12S3_RELA", /* name */ | |
746 | FALSE, /* partial_inplace */ | |
747 | 0x000001ff, /* src_mask */ | |
748 | 0x000001ff, /* dst_mask */ | |
749 | FALSE), /* pcrel_offset */ | |
750 | ||
751 | /* Lower 12 bits of address. */ | |
752 | HOWTO (R_NDS32_LO12S2_RELA, /* type */ | |
753 | 2, /* rightshift */ | |
754 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
755 | 10, /* bitsize */ | |
756 | FALSE, /* pc_relative */ | |
757 | 0, /* bitpos */ | |
758 | complain_overflow_dont,/* complain_on_overflow */ | |
759 | bfd_elf_generic_reloc, /* special_function */ | |
760 | "R_NDS32_LO12S2_RELA", /* name */ | |
761 | FALSE, /* partial_inplace */ | |
762 | 0x000003ff, /* src_mask */ | |
763 | 0x000003ff, /* dst_mask */ | |
764 | FALSE), /* pcrel_offset */ | |
765 | ||
766 | /* Lower 12 bits of address. */ | |
767 | HOWTO (R_NDS32_LO12S1_RELA, /* type */ | |
768 | 1, /* rightshift */ | |
769 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
770 | 11, /* bitsize */ | |
771 | FALSE, /* pc_relative */ | |
772 | 0, /* bitpos */ | |
773 | complain_overflow_dont,/* complain_on_overflow */ | |
774 | bfd_elf_generic_reloc, /* special_function */ | |
775 | "R_NDS32_LO12S1_RELA", /* name */ | |
776 | FALSE, /* partial_inplace */ | |
777 | 0x000007ff, /* src_mask */ | |
778 | 0x000007ff, /* dst_mask */ | |
779 | FALSE), /* pcrel_offset */ | |
780 | ||
781 | /* Lower 12 bits of address. */ | |
782 | HOWTO (R_NDS32_LO12S0_RELA, /* type */ | |
783 | 0, /* rightshift */ | |
784 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
785 | 12, /* bitsize */ | |
786 | FALSE, /* pc_relative */ | |
787 | 0, /* bitpos */ | |
788 | complain_overflow_dont,/* complain_on_overflow */ | |
789 | bfd_elf_generic_reloc, /* special_function */ | |
790 | "R_NDS32_LO12S0_RELA", /* name */ | |
791 | FALSE, /* partial_inplace */ | |
792 | 0x00000fff, /* src_mask */ | |
793 | 0x00000fff, /* dst_mask */ | |
794 | FALSE), /* pcrel_offset */ | |
795 | ||
796 | /* Small data area 15 bits offset. */ | |
797 | HOWTO (R_NDS32_SDA15S3_RELA, /* type */ | |
798 | 3, /* rightshift */ | |
799 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
800 | 15, /* bitsize */ | |
801 | FALSE, /* pc_relative */ | |
802 | 0, /* bitpos */ | |
803 | complain_overflow_signed, /* complain_on_overflow */ | |
804 | bfd_elf_generic_reloc, /* special_function */ | |
805 | "R_NDS32_SDA15S3_RELA",/* name */ | |
806 | FALSE, /* partial_inplace */ | |
807 | 0x00007fff, /* src_mask */ | |
808 | 0x00007fff, /* dst_mask */ | |
809 | FALSE), /* pcrel_offset */ | |
810 | ||
811 | /* Small data area 15 bits offset. */ | |
812 | HOWTO (R_NDS32_SDA15S2_RELA, /* type */ | |
813 | 2, /* rightshift */ | |
814 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
815 | 15, /* bitsize */ | |
816 | FALSE, /* pc_relative */ | |
817 | 0, /* bitpos */ | |
818 | complain_overflow_signed, /* complain_on_overflow */ | |
819 | bfd_elf_generic_reloc, /* special_function */ | |
820 | "R_NDS32_SDA15S2_RELA",/* name */ | |
821 | FALSE, /* partial_inplace */ | |
822 | 0x00007fff, /* src_mask */ | |
823 | 0x00007fff, /* dst_mask */ | |
824 | FALSE), /* pcrel_offset */ | |
825 | ||
826 | HOWTO (R_NDS32_SDA15S1_RELA, /* type */ | |
827 | 1, /* rightshift */ | |
828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
829 | 15, /* bitsize */ | |
830 | FALSE, /* pc_relative */ | |
831 | 0, /* bitpos */ | |
832 | complain_overflow_signed, /* complain_on_overflow */ | |
833 | bfd_elf_generic_reloc, /* special_function */ | |
834 | "R_NDS32_SDA15S1_RELA",/* name */ | |
835 | FALSE, /* partial_inplace */ | |
836 | 0x00007fff, /* src_mask */ | |
837 | 0x00007fff, /* dst_mask */ | |
838 | FALSE), /* pcrel_offset */ | |
839 | ||
840 | HOWTO (R_NDS32_SDA15S0_RELA, /* type */ | |
841 | 0, /* rightshift */ | |
842 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
843 | 15, /* bitsize */ | |
844 | FALSE, /* pc_relative */ | |
845 | 0, /* bitpos */ | |
846 | complain_overflow_signed, /* complain_on_overflow */ | |
847 | bfd_elf_generic_reloc, /* special_function */ | |
848 | "R_NDS32_SDA15S0_RELA",/* name */ | |
849 | FALSE, /* partial_inplace */ | |
850 | 0x00007fff, /* src_mask */ | |
851 | 0x00007fff, /* dst_mask */ | |
852 | FALSE), /* pcrel_offset */ | |
853 | ||
854 | /* GNU extension to record C++ vtable hierarchy */ | |
855 | HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */ | |
856 | 0, /* rightshift */ | |
857 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
858 | 0, /* bitsize */ | |
859 | FALSE, /* pc_relative */ | |
860 | 0, /* bitpos */ | |
861 | complain_overflow_dont,/* complain_on_overflow */ | |
862 | NULL, /* special_function */ | |
863 | "R_NDS32_RELA_GNU_VTINHERIT", /* name */ | |
864 | FALSE, /* partial_inplace */ | |
865 | 0, /* src_mask */ | |
866 | 0, /* dst_mask */ | |
867 | FALSE), /* pcrel_offset */ | |
868 | ||
869 | /* GNU extension to record C++ vtable member usage */ | |
870 | HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */ | |
871 | 0, /* rightshift */ | |
872 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
873 | 0, /* bitsize */ | |
874 | FALSE, /* pc_relative */ | |
875 | 0, /* bitpos */ | |
876 | complain_overflow_dont,/* complain_on_overflow */ | |
877 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ | |
878 | "R_NDS32_RELA_GNU_VTENTRY", /* name */ | |
879 | FALSE, /* partial_inplace */ | |
880 | 0, /* src_mask */ | |
881 | 0, /* dst_mask */ | |
882 | FALSE), /* pcrel_offset */ | |
883 | ||
884 | /* Like R_NDS32_20, but referring to the GOT table entry for | |
885 | the symbol. */ | |
886 | HOWTO (R_NDS32_GOT20, /* type */ | |
887 | 0, /* rightshift */ | |
888 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
889 | 20, /* bitsize */ | |
890 | FALSE, /* pc_relative */ | |
891 | 0, /* bitpos */ | |
892 | complain_overflow_signed, /* complain_on_overflow */ | |
893 | bfd_elf_generic_reloc, /* special_function */ | |
894 | "R_NDS32_GOT20", /* name */ | |
895 | FALSE, /* partial_inplace */ | |
896 | 0xfffff, /* src_mask */ | |
897 | 0xfffff, /* dst_mask */ | |
898 | FALSE), /* pcrel_offset */ | |
899 | ||
900 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
901 | entry for the symbol. */ | |
902 | HOWTO (R_NDS32_25_PLTREL, /* type */ | |
903 | 1, /* rightshift */ | |
904 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
905 | 24, /* bitsize */ | |
906 | TRUE, /* pc_relative */ | |
907 | 0, /* bitpos */ | |
908 | complain_overflow_signed, /* complain_on_overflow */ | |
909 | bfd_elf_generic_reloc, /* special_function */ | |
910 | "R_NDS32_25_PLTREL", /* name */ | |
911 | FALSE, /* partial_inplace */ | |
912 | 0xffffff, /* src_mask */ | |
913 | 0xffffff, /* dst_mask */ | |
914 | TRUE), /* pcrel_offset */ | |
915 | ||
916 | /* This is used only by the dynamic linker. The symbol should exist | |
917 | both in the object being run and in some shared library. The | |
918 | dynamic linker copies the data addressed by the symbol from the | |
919 | shared library into the object, because the object being | |
920 | run has to have the data at some particular address. */ | |
921 | HOWTO (R_NDS32_COPY, /* type */ | |
922 | 0, /* rightshift */ | |
923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
924 | 32, /* bitsize */ | |
925 | FALSE, /* pc_relative */ | |
926 | 0, /* bitpos */ | |
927 | complain_overflow_bitfield, /* complain_on_overflow */ | |
928 | bfd_elf_generic_reloc, /* special_function */ | |
929 | "R_NDS32_COPY", /* name */ | |
930 | FALSE, /* partial_inplace */ | |
931 | 0xffffffff, /* src_mask */ | |
932 | 0xffffffff, /* dst_mask */ | |
933 | FALSE), /* pcrel_offset */ | |
934 | ||
935 | /* Like R_NDS32_20, but used when setting global offset table | |
936 | entries. */ | |
937 | HOWTO (R_NDS32_GLOB_DAT, /* type */ | |
938 | 0, /* rightshift */ | |
939 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
940 | 32, /* bitsize */ | |
941 | FALSE, /* pc_relative */ | |
942 | 0, /* bitpos */ | |
943 | complain_overflow_bitfield, /* complain_on_overflow */ | |
944 | bfd_elf_generic_reloc, /* special_function */ | |
945 | "R_NDS32_GLOB_DAT", /* name */ | |
946 | FALSE, /* partial_inplace */ | |
947 | 0xffffffff, /* src_mask */ | |
948 | 0xffffffff, /* dst_mask */ | |
949 | FALSE), /* pcrel_offset */ | |
950 | ||
951 | /* Marks a procedure linkage table entry for a symbol. */ | |
952 | HOWTO (R_NDS32_JMP_SLOT, /* type */ | |
953 | 0, /* rightshift */ | |
954 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
955 | 32, /* bitsize */ | |
956 | FALSE, /* pc_relative */ | |
957 | 0, /* bitpos */ | |
958 | complain_overflow_bitfield, /* complain_on_overflow */ | |
959 | bfd_elf_generic_reloc, /* special_function */ | |
960 | "R_NDS32_JMP_SLOT", /* name */ | |
961 | FALSE, /* partial_inplace */ | |
962 | 0xffffffff, /* src_mask */ | |
963 | 0xffffffff, /* dst_mask */ | |
964 | FALSE), /* pcrel_offset */ | |
965 | ||
966 | /* Used only by the dynamic linker. When the object is run, this | |
967 | longword is set to the load address of the object, plus the | |
968 | addend. */ | |
969 | HOWTO (R_NDS32_RELATIVE, /* type */ | |
970 | 0, /* rightshift */ | |
971 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
972 | 32, /* bitsize */ | |
973 | FALSE, /* pc_relative */ | |
974 | 0, /* bitpos */ | |
975 | complain_overflow_bitfield, /* complain_on_overflow */ | |
976 | bfd_elf_generic_reloc, /* special_function */ | |
977 | "R_NDS32_RELATIVE", /* name */ | |
978 | FALSE, /* partial_inplace */ | |
979 | 0xffffffff, /* src_mask */ | |
980 | 0xffffffff, /* dst_mask */ | |
981 | FALSE), /* pcrel_offset */ | |
982 | ||
983 | HOWTO (R_NDS32_GOTOFF, /* type */ | |
984 | 0, /* rightshift */ | |
985 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
986 | 20, /* bitsize */ | |
987 | FALSE, /* pc_relative */ | |
988 | 0, /* bitpos */ | |
989 | complain_overflow_signed, /* complain_on_overflow */ | |
990 | bfd_elf_generic_reloc, /* special_function */ | |
991 | "R_NDS32_GOTOFF", /* name */ | |
992 | FALSE, /* partial_inplace */ | |
993 | 0xfffff, /* src_mask */ | |
994 | 0xfffff, /* dst_mask */ | |
995 | FALSE), /* pcrel_offset */ | |
996 | ||
997 | /* An PC Relative 20-bit relocation used when setting PIC offset | |
998 | table register. */ | |
999 | HOWTO (R_NDS32_GOTPC20, /* type */ | |
1000 | 0, /* rightshift */ | |
1001 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1002 | 20, /* bitsize */ | |
1003 | TRUE, /* pc_relative */ | |
1004 | 0, /* bitpos */ | |
1005 | complain_overflow_signed, /* complain_on_overflow */ | |
1006 | bfd_elf_generic_reloc, /* special_function */ | |
1007 | "R_NDS32_GOTPC20", /* name */ | |
1008 | FALSE, /* partial_inplace */ | |
1009 | 0xfffff, /* src_mask */ | |
1010 | 0xfffff, /* dst_mask */ | |
1011 | TRUE), /* pcrel_offset */ | |
1012 | ||
1013 | /* Like R_NDS32_HI20, but referring to the GOT table entry for | |
1014 | the symbol. */ | |
1015 | HOWTO (R_NDS32_GOT_HI20, /* type */ | |
1016 | 12, /* rightshift */ | |
1017 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1018 | 20, /* bitsize */ | |
1019 | FALSE, /* pc_relative */ | |
1020 | 0, /* bitpos */ | |
1021 | complain_overflow_dont,/* complain_on_overflow */ | |
1022 | bfd_elf_generic_reloc, /* special_function */ | |
1023 | "R_NDS32_GOT_HI20", /* name */ | |
1024 | FALSE, /* partial_inplace */ | |
1025 | 0x000fffff, /* src_mask */ | |
1026 | 0x000fffff, /* dst_mask */ | |
1027 | FALSE), /* pcrel_offset */ | |
1028 | HOWTO (R_NDS32_GOT_LO12, /* type */ | |
1029 | 0, /* rightshift */ | |
1030 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1031 | 12, /* bitsize */ | |
1032 | FALSE, /* pc_relative */ | |
1033 | 0, /* bitpos */ | |
1034 | complain_overflow_dont,/* complain_on_overflow */ | |
1035 | bfd_elf_generic_reloc, /* special_function */ | |
1036 | "R_NDS32_GOT_LO12", /* name */ | |
1037 | FALSE, /* partial_inplace */ | |
1038 | 0x00000fff, /* src_mask */ | |
1039 | 0x00000fff, /* dst_mask */ | |
1040 | FALSE), /* pcrel_offset */ | |
1041 | ||
1042 | /* An PC Relative relocation used when setting PIC offset table register. | |
1043 | Like R_NDS32_HI20, but referring to the GOT table entry for | |
1044 | the symbol. */ | |
1045 | HOWTO (R_NDS32_GOTPC_HI20, /* type */ | |
1046 | 12, /* rightshift */ | |
1047 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1048 | 20, /* bitsize */ | |
1049 | FALSE, /* pc_relative */ | |
1050 | 0, /* bitpos */ | |
1051 | complain_overflow_dont,/* complain_on_overflow */ | |
1052 | bfd_elf_generic_reloc, /* special_function */ | |
1053 | "R_NDS32_GOTPC_HI20", /* name */ | |
1054 | FALSE, /* partial_inplace */ | |
1055 | 0x000fffff, /* src_mask */ | |
1056 | 0x000fffff, /* dst_mask */ | |
1057 | TRUE), /* pcrel_offset */ | |
1058 | HOWTO (R_NDS32_GOTPC_LO12, /* type */ | |
1059 | 0, /* rightshift */ | |
1060 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1061 | 12, /* bitsize */ | |
1062 | FALSE, /* pc_relative */ | |
1063 | 0, /* bitpos */ | |
1064 | complain_overflow_dont, /* complain_on_overflow */ | |
1065 | bfd_elf_generic_reloc, /* special_function */ | |
1066 | "R_NDS32_GOTPC_LO12", /* name */ | |
1067 | FALSE, /* partial_inplace */ | |
1068 | 0x00000fff, /* src_mask */ | |
1069 | 0x00000fff, /* dst_mask */ | |
1070 | TRUE), /* pcrel_offset */ | |
1071 | ||
1072 | HOWTO (R_NDS32_GOTOFF_HI20, /* type */ | |
1073 | 12, /* rightshift */ | |
1074 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1075 | 20, /* bitsize */ | |
1076 | FALSE, /* pc_relative */ | |
1077 | 0, /* bitpos */ | |
1078 | complain_overflow_dont,/* complain_on_overflow */ | |
1079 | bfd_elf_generic_reloc, /* special_function */ | |
1080 | "R_NDS32_GOTOFF_HI20", /* name */ | |
1081 | FALSE, /* partial_inplace */ | |
1082 | 0x000fffff, /* src_mask */ | |
1083 | 0x000fffff, /* dst_mask */ | |
1084 | FALSE), /* pcrel_offset */ | |
1085 | HOWTO (R_NDS32_GOTOFF_LO12, /* type */ | |
1086 | 0, /* rightshift */ | |
1087 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1088 | 12, /* bitsize */ | |
1089 | FALSE, /* pc_relative */ | |
1090 | 0, /* bitpos */ | |
1091 | complain_overflow_dont,/* complain_on_overflow */ | |
1092 | bfd_elf_generic_reloc, /* special_function */ | |
1093 | "R_NDS32_GOTOFF_LO12", /* name */ | |
1094 | FALSE, /* partial_inplace */ | |
1095 | 0x00000fff, /* src_mask */ | |
1096 | 0x00000fff, /* dst_mask */ | |
1097 | FALSE), /* pcrel_offset */ | |
1098 | ||
1099 | /* Alignment hint for relaxable instruction. This is used with | |
1100 | R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2 | |
1101 | in order to make next label aligned on word boundary. */ | |
1102 | HOWTO (R_NDS32_INSN16, /* type */ | |
1103 | 0, /* rightshift */ | |
1104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1105 | 32, /* bitsize */ | |
1106 | FALSE, /* pc_relative */ | |
1107 | 0, /* bitpos */ | |
1108 | complain_overflow_dont,/* complain_on_overflow */ | |
1109 | nds32_elf_ignore_reloc,/* special_function */ | |
1110 | "R_NDS32_INSN16", /* name */ | |
1111 | FALSE, /* partial_inplace */ | |
1112 | 0x00000fff, /* src_mask */ | |
1113 | 0x00000fff, /* dst_mask */ | |
1114 | FALSE), /* pcrel_offset */ | |
1115 | ||
1116 | /* Alignment hint for label. */ | |
1117 | HOWTO (R_NDS32_LABEL, /* type */ | |
1118 | 0, /* rightshift */ | |
1119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1120 | 32, /* bitsize */ | |
1121 | FALSE, /* pc_relative */ | |
1122 | 0, /* bitpos */ | |
1123 | complain_overflow_dont,/* complain_on_overflow */ | |
1124 | nds32_elf_ignore_reloc,/* special_function */ | |
1125 | "R_NDS32_LABEL", /* name */ | |
1126 | FALSE, /* partial_inplace */ | |
1127 | 0xffffffff, /* src_mask */ | |
1128 | 0xffffffff, /* dst_mask */ | |
1129 | FALSE), /* pcrel_offset */ | |
1130 | ||
1131 | /* Relax hint for unconditional call sequence */ | |
1132 | HOWTO (R_NDS32_LONGCALL1, /* type */ | |
1133 | 0, /* rightshift */ | |
1134 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1135 | 32, /* bitsize */ | |
1136 | FALSE, /* pc_relative */ | |
1137 | 0, /* bitpos */ | |
1138 | complain_overflow_dont,/* complain_on_overflow */ | |
1139 | nds32_elf_ignore_reloc,/* special_function */ | |
1140 | "R_NDS32_LONGCALL1", /* name */ | |
1141 | FALSE, /* partial_inplace */ | |
1142 | 0xffffffff, /* src_mask */ | |
1143 | 0xffffffff, /* dst_mask */ | |
1144 | FALSE), /* pcrel_offset */ | |
1145 | ||
1146 | /* Relax hint for conditional call sequence. */ | |
1147 | HOWTO (R_NDS32_LONGCALL2, /* type */ | |
1148 | 0, /* rightshift */ | |
1149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1150 | 32, /* bitsize */ | |
1151 | FALSE, /* pc_relative */ | |
1152 | 0, /* bitpos */ | |
1153 | complain_overflow_dont,/* complain_on_overflow */ | |
1154 | nds32_elf_ignore_reloc,/* special_function */ | |
1155 | "R_NDS32_LONGCALL2", /* name */ | |
1156 | FALSE, /* partial_inplace */ | |
1157 | 0xffffffff, /* src_mask */ | |
1158 | 0xffffffff, /* dst_mask */ | |
1159 | FALSE), /* pcrel_offset */ | |
1160 | ||
1161 | /* Relax hint for conditional call sequence. */ | |
1162 | HOWTO (R_NDS32_LONGCALL3, /* type */ | |
1163 | 0, /* rightshift */ | |
1164 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1165 | 32, /* bitsize */ | |
1166 | FALSE, /* pc_relative */ | |
1167 | 0, /* bitpos */ | |
1168 | complain_overflow_dont,/* complain_on_overflow */ | |
1169 | nds32_elf_ignore_reloc,/* special_function */ | |
1170 | "R_NDS32_LONGCALL3", /* name */ | |
1171 | FALSE, /* partial_inplace */ | |
1172 | 0xffffffff, /* src_mask */ | |
1173 | 0xffffffff, /* dst_mask */ | |
1174 | FALSE), /* pcrel_offset */ | |
1175 | ||
1176 | /* Relax hint for unconditional branch sequence. */ | |
1177 | HOWTO (R_NDS32_LONGJUMP1, /* type */ | |
1178 | 0, /* rightshift */ | |
1179 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1180 | 32, /* bitsize */ | |
1181 | FALSE, /* pc_relative */ | |
1182 | 0, /* bitpos */ | |
1183 | complain_overflow_dont,/* complain_on_overflow */ | |
1184 | nds32_elf_ignore_reloc,/* special_function */ | |
1185 | "R_NDS32_LONGJUMP1", /* name */ | |
1186 | FALSE, /* partial_inplace */ | |
1187 | 0xffffffff, /* src_mask */ | |
1188 | 0xffffffff, /* dst_mask */ | |
1189 | FALSE), /* pcrel_offset */ | |
1190 | ||
1191 | /* Relax hint for conditional branch sequence. */ | |
1192 | HOWTO (R_NDS32_LONGJUMP2, /* type */ | |
1193 | 0, /* rightshift */ | |
1194 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1195 | 32, /* bitsize */ | |
1196 | FALSE, /* pc_relative */ | |
1197 | 0, /* bitpos */ | |
1198 | complain_overflow_dont,/* complain_on_overflow */ | |
1199 | nds32_elf_ignore_reloc,/* special_function */ | |
1200 | "R_NDS32_LONGJUMP2", /* name */ | |
1201 | FALSE, /* partial_inplace */ | |
1202 | 0xffffffff, /* src_mask */ | |
1203 | 0xffffffff, /* dst_mask */ | |
1204 | FALSE), /* pcrel_offset */ | |
1205 | ||
1206 | /* Relax hint for conditional branch sequence. */ | |
1207 | HOWTO (R_NDS32_LONGJUMP3, /* type */ | |
1208 | 0, /* rightshift */ | |
1209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1210 | 32, /* bitsize */ | |
1211 | FALSE, /* pc_relative */ | |
1212 | 0, /* bitpos */ | |
1213 | complain_overflow_dont,/* complain_on_overflow */ | |
1214 | nds32_elf_ignore_reloc,/* special_function */ | |
1215 | "R_NDS32_LONGJUMP3", /* name */ | |
1216 | FALSE, /* partial_inplace */ | |
1217 | 0xffffffff, /* src_mask */ | |
1218 | 0xffffffff, /* dst_mask */ | |
1219 | FALSE), /* pcrel_offset */ | |
1220 | ||
1221 | /* Relax hint for load/store sequence. */ | |
1222 | HOWTO (R_NDS32_LOADSTORE, /* type */ | |
1223 | 0, /* rightshift */ | |
1224 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1225 | 32, /* bitsize */ | |
1226 | FALSE, /* pc_relative */ | |
1227 | 0, /* bitpos */ | |
1228 | complain_overflow_dont,/* complain_on_overflow */ | |
1229 | nds32_elf_ignore_reloc,/* special_function */ | |
1230 | "R_NDS32_LOADSTORE", /* name */ | |
1231 | FALSE, /* partial_inplace */ | |
1232 | 0xffffffff, /* src_mask */ | |
1233 | 0xffffffff, /* dst_mask */ | |
1234 | FALSE), /* pcrel_offset */ | |
1235 | ||
1236 | /* Relax hint for load/store sequence. */ | |
1237 | HOWTO (R_NDS32_9_FIXED_RELA, /* type */ | |
1238 | 0, /* rightshift */ | |
1239 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1240 | 16, /* bitsize */ | |
1241 | FALSE, /* pc_relative */ | |
1242 | 0, /* bitpos */ | |
1243 | complain_overflow_dont,/* complain_on_overflow */ | |
1244 | nds32_elf_ignore_reloc,/* special_function */ | |
1245 | "R_NDS32_9_FIXED_RELA",/* name */ | |
1246 | FALSE, /* partial_inplace */ | |
1247 | 0x000000ff, /* src_mask */ | |
1248 | 0x000000ff, /* dst_mask */ | |
1249 | FALSE), /* pcrel_offset */ | |
1250 | ||
1251 | /* Relax hint for load/store sequence. */ | |
1252 | HOWTO (R_NDS32_15_FIXED_RELA, /* type */ | |
1253 | 0, /* rightshift */ | |
1254 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1255 | 32, /* bitsize */ | |
1256 | FALSE, /* pc_relative */ | |
1257 | 0, /* bitpos */ | |
1258 | complain_overflow_dont,/* complain_on_overflow */ | |
1259 | nds32_elf_ignore_reloc,/* special_function */ | |
1260 | "R_NDS32_15_FIXED_RELA", /* name */ | |
1261 | FALSE, /* partial_inplace */ | |
1262 | 0x00003fff, /* src_mask */ | |
1263 | 0x00003fff, /* dst_mask */ | |
1264 | FALSE), /* pcrel_offset */ | |
1265 | ||
1266 | /* Relax hint for load/store sequence. */ | |
1267 | HOWTO (R_NDS32_17_FIXED_RELA, /* type */ | |
1268 | 0, /* rightshift */ | |
1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1270 | 32, /* bitsize */ | |
1271 | FALSE, /* pc_relative */ | |
1272 | 0, /* bitpos */ | |
1273 | complain_overflow_dont,/* complain_on_overflow */ | |
1274 | nds32_elf_ignore_reloc,/* special_function */ | |
1275 | "R_NDS32_17_FIXED_RELA", /* name */ | |
1276 | FALSE, /* partial_inplace */ | |
1277 | 0x0000ffff, /* src_mask */ | |
1278 | 0x0000ffff, /* dst_mask */ | |
1279 | FALSE), /* pcrel_offset */ | |
1280 | ||
1281 | /* Relax hint for load/store sequence. */ | |
1282 | HOWTO (R_NDS32_25_FIXED_RELA, /* type */ | |
1283 | 0, /* rightshift */ | |
1284 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1285 | 32, /* bitsize */ | |
1286 | FALSE, /* pc_relative */ | |
1287 | 0, /* bitpos */ | |
1288 | complain_overflow_dont,/* complain_on_overflow */ | |
1289 | nds32_elf_ignore_reloc,/* special_function */ | |
1290 | "R_NDS32_25_FIXED_RELA", /* name */ | |
1291 | FALSE, /* partial_inplace */ | |
1292 | 0x00ffffff, /* src_mask */ | |
1293 | 0x00ffffff, /* dst_mask */ | |
1294 | FALSE), /* pcrel_offset */ | |
1295 | ||
1296 | /* High 20 bits of PLT symbol offset relative to PC. */ | |
1297 | HOWTO (R_NDS32_PLTREL_HI20, /* type */ | |
1298 | 12, /* rightshift */ | |
1299 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1300 | 20, /* bitsize */ | |
1301 | FALSE, /* pc_relative */ | |
1302 | 0, /* bitpos */ | |
1303 | complain_overflow_dont,/* complain_on_overflow */ | |
1304 | bfd_elf_generic_reloc, /* special_function */ | |
1305 | "R_NDS32_PLTREL_HI20", /* name */ | |
1306 | FALSE, /* partial_inplace */ | |
1307 | 0x000fffff, /* src_mask */ | |
1308 | 0x000fffff, /* dst_mask */ | |
1309 | FALSE), /* pcrel_offset */ | |
1310 | ||
1311 | /* Low 12 bits of PLT symbol offset relative to PC. */ | |
1312 | HOWTO (R_NDS32_PLTREL_LO12, /* type */ | |
1313 | 0, /* rightshift */ | |
1314 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1315 | 12, /* bitsize */ | |
1316 | FALSE, /* pc_relative */ | |
1317 | 0, /* bitpos */ | |
1318 | complain_overflow_dont,/* complain_on_overflow */ | |
1319 | bfd_elf_generic_reloc, /* special_function */ | |
1320 | "R_NDS32_PLTREL_LO12", /* name */ | |
1321 | FALSE, /* partial_inplace */ | |
1322 | 0x00000fff, /* src_mask */ | |
1323 | 0x00000fff, /* dst_mask */ | |
1324 | FALSE), /* pcrel_offset */ | |
1325 | ||
1326 | /* High 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1327 | HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */ | |
1328 | 12, /* rightshift */ | |
1329 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1330 | 20, /* bitsize */ | |
1331 | FALSE, /* pc_relative */ | |
1332 | 0, /* bitpos */ | |
1333 | complain_overflow_dont,/* complain_on_overflow */ | |
1334 | bfd_elf_generic_reloc, /* special_function */ | |
1335 | "R_NDS32_PLT_GOTREL_HI20", /* name */ | |
1336 | FALSE, /* partial_inplace */ | |
1337 | 0x000fffff, /* src_mask */ | |
1338 | 0x000fffff, /* dst_mask */ | |
1339 | FALSE), /* pcrel_offset */ | |
1340 | ||
1341 | /* Low 12 bits of PLT symbol offset relative to GOT (GP). */ | |
1342 | HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */ | |
1343 | 0, /* rightshift */ | |
1344 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1345 | 12, /* bitsize */ | |
1346 | FALSE, /* pc_relative */ | |
1347 | 0, /* bitpos */ | |
1348 | complain_overflow_dont,/* complain_on_overflow */ | |
1349 | bfd_elf_generic_reloc, /* special_function */ | |
1350 | "R_NDS32_PLT_GOTREL_LO12", /* name */ | |
1351 | FALSE, /* partial_inplace */ | |
1352 | 0x00000fff, /* src_mask */ | |
1353 | 0x00000fff, /* dst_mask */ | |
1354 | FALSE), /* pcrel_offset */ | |
1355 | ||
1356 | /* Small data area 12 bits offset. */ | |
1357 | HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */ | |
1358 | 2, /* rightshift */ | |
1359 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1360 | 12, /* bitsize */ | |
1361 | FALSE, /* pc_relative */ | |
1362 | 0, /* bitpos */ | |
1363 | complain_overflow_signed, /* complain_on_overflow */ | |
1364 | bfd_elf_generic_reloc, /* special_function */ | |
1365 | "R_NDS32_SDA12S2_DP_RELA", /* name */ | |
1366 | FALSE, /* partial_inplace */ | |
1367 | 0x00000fff, /* src_mask */ | |
1368 | 0x00000fff, /* dst_mask */ | |
1369 | FALSE), /* pcrel_offset */ | |
1370 | ||
1371 | /* Small data area 12 bits offset. */ | |
1372 | HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */ | |
1373 | 2, /* rightshift */ | |
1374 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1375 | 12, /* bitsize */ | |
1376 | FALSE, /* pc_relative */ | |
1377 | 0, /* bitpos */ | |
1378 | complain_overflow_signed, /* complain_on_overflow */ | |
1379 | bfd_elf_generic_reloc, /* special_function */ | |
1380 | "R_NDS32_SDA12S2_SP_RELA", /* name */ | |
1381 | FALSE, /* partial_inplace */ | |
1382 | 0x00000fff, /* src_mask */ | |
1383 | 0x00000fff, /* dst_mask */ | |
1384 | FALSE), /* pcrel_offset */ | |
1385 | /* Lower 12 bits of address. */ | |
1386 | ||
1387 | HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */ | |
1388 | 2, /* rightshift */ | |
1389 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1390 | 10, /* bitsize */ | |
1391 | FALSE, /* pc_relative */ | |
1392 | 0, /* bitpos */ | |
1393 | complain_overflow_dont,/* complain_on_overflow */ | |
1394 | bfd_elf_generic_reloc, /* special_function */ | |
1395 | "R_NDS32_LO12S2_DP_RELA", /* name */ | |
1396 | FALSE, /* partial_inplace */ | |
1397 | 0x000003ff, /* src_mask */ | |
1398 | 0x000003ff, /* dst_mask */ | |
1399 | FALSE), /* pcrel_offset */ | |
1400 | ||
1401 | /* Lower 12 bits of address. */ | |
1402 | HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */ | |
1403 | 2, /* rightshift */ | |
1404 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1405 | 10, /* bitsize */ | |
1406 | FALSE, /* pc_relative */ | |
1407 | 0, /* bitpos */ | |
1408 | complain_overflow_dont,/* complain_on_overflow */ | |
1409 | bfd_elf_generic_reloc, /* special_function */ | |
1410 | "R_NDS32_LO12S2_SP_RELA", /* name */ | |
1411 | FALSE, /* partial_inplace */ | |
1412 | 0x000003ff, /* src_mask */ | |
1413 | 0x000003ff, /* dst_mask */ | |
1414 | FALSE), /* pcrel_offset */ | |
1415 | /* Lower 12 bits of address. Special identity for or case. */ | |
1416 | HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */ | |
1417 | 0, /* rightshift */ | |
1418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1419 | 12, /* bitsize */ | |
1420 | FALSE, /* pc_relative */ | |
1421 | 0, /* bitpos */ | |
1422 | complain_overflow_dont,/* complain_on_overflow */ | |
1423 | bfd_elf_generic_reloc, /* special_function */ | |
1424 | "R_NDS32_LO12S0_ORI_RELA", /* name */ | |
1425 | FALSE, /* partial_inplace */ | |
1426 | 0x00000fff, /* src_mask */ | |
1427 | 0x00000fff, /* dst_mask */ | |
1428 | FALSE), /* pcrel_offset */ | |
1429 | /* Small data area 19 bits offset. */ | |
1430 | HOWTO (R_NDS32_SDA16S3_RELA, /* type */ | |
1431 | 3, /* rightshift */ | |
1432 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1433 | 16, /* bitsize */ | |
1434 | FALSE, /* pc_relative */ | |
1435 | 0, /* bitpos */ | |
1436 | complain_overflow_signed, /* complain_on_overflow */ | |
1437 | bfd_elf_generic_reloc, /* special_function */ | |
1438 | "R_NDS32_SDA16S3_RELA",/* name */ | |
1439 | FALSE, /* partial_inplace */ | |
1440 | 0x0000ffff, /* src_mask */ | |
1441 | 0x0000ffff, /* dst_mask */ | |
1442 | FALSE), /* pcrel_offset */ | |
1443 | ||
1444 | /* Small data area 15 bits offset. */ | |
1445 | HOWTO (R_NDS32_SDA17S2_RELA, /* type */ | |
1446 | 2, /* rightshift */ | |
1447 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1448 | 17, /* bitsize */ | |
1449 | FALSE, /* pc_relative */ | |
1450 | 0, /* bitpos */ | |
1451 | complain_overflow_signed, /* complain_on_overflow */ | |
1452 | bfd_elf_generic_reloc, /* special_function */ | |
1453 | "R_NDS32_SDA17S2_RELA",/* name */ | |
1454 | FALSE, /* partial_inplace */ | |
1455 | 0x0001ffff, /* src_mask */ | |
1456 | 0x0001ffff, /* dst_mask */ | |
1457 | FALSE), /* pcrel_offset */ | |
1458 | ||
1459 | HOWTO (R_NDS32_SDA18S1_RELA, /* type */ | |
1460 | 1, /* rightshift */ | |
1461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1462 | 18, /* bitsize */ | |
1463 | FALSE, /* pc_relative */ | |
1464 | 0, /* bitpos */ | |
1465 | complain_overflow_signed, /* complain_on_overflow */ | |
1466 | bfd_elf_generic_reloc, /* special_function */ | |
1467 | "R_NDS32_SDA18S1_RELA",/* name */ | |
1468 | FALSE, /* partial_inplace */ | |
1469 | 0x0003ffff, /* src_mask */ | |
1470 | 0x0003ffff, /* dst_mask */ | |
1471 | FALSE), /* pcrel_offset */ | |
1472 | ||
1473 | HOWTO (R_NDS32_SDA19S0_RELA, /* type */ | |
1474 | 0, /* rightshift */ | |
1475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1476 | 19, /* bitsize */ | |
1477 | FALSE, /* pc_relative */ | |
1478 | 0, /* bitpos */ | |
1479 | complain_overflow_signed, /* complain_on_overflow */ | |
1480 | bfd_elf_generic_reloc, /* special_function */ | |
1481 | "R_NDS32_SDA19S0_RELA",/* name */ | |
1482 | FALSE, /* partial_inplace */ | |
1483 | 0x0007ffff, /* src_mask */ | |
1484 | 0x0007ffff, /* dst_mask */ | |
1485 | FALSE), /* pcrel_offset */ | |
1486 | HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */ | |
1487 | 0, /* rightshift */ | |
1488 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
1489 | 8, /* bitsize */ | |
1490 | FALSE, /* pc_relative */ | |
1491 | 0, /* bitpos */ | |
1492 | complain_overflow_dont,/* complain_on_overflow */ | |
1493 | nds32_elf_ignore_reloc,/* special_function */ | |
1494 | "R_NDS32_DWARF2_OP1_RELA", /* name */ | |
1495 | FALSE, /* partial_inplace */ | |
1496 | 0xff, /* src_mask */ | |
1497 | 0xff, /* dst_mask */ | |
1498 | FALSE), /* pcrel_offset */ | |
1499 | HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */ | |
1500 | 0, /* rightshift */ | |
1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1502 | 16, /* bitsize */ | |
1503 | FALSE, /* pc_relative */ | |
1504 | 0, /* bitpos */ | |
1505 | complain_overflow_dont,/* complain_on_overflow */ | |
1506 | nds32_elf_ignore_reloc,/* special_function */ | |
1507 | "R_NDS32_DWARF2_OP2_RELA", /* name */ | |
1508 | FALSE, /* partial_inplace */ | |
1509 | 0xffff, /* src_mask */ | |
1510 | 0xffff, /* dst_mask */ | |
1511 | FALSE), /* pcrel_offset */ | |
1512 | HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */ | |
1513 | 0, /* rightshift */ | |
1514 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1515 | 32, /* bitsize */ | |
1516 | FALSE, /* pc_relative */ | |
1517 | 0, /* bitpos */ | |
1518 | complain_overflow_dont,/* complain_on_overflow */ | |
1519 | nds32_elf_ignore_reloc,/* special_function */ | |
1520 | "R_NDS32_DWARF2_LEB_RELA", /* name */ | |
1521 | FALSE, /* partial_inplace */ | |
1522 | 0xffffffff, /* src_mask */ | |
1523 | 0xffffffff, /* dst_mask */ | |
1524 | FALSE), /* pcrel_offset */ | |
1525 | HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */ | |
1526 | 0, /* rightshift */ | |
1527 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1528 | 16, /* bitsize */ | |
1529 | FALSE, /* pc_relative */ | |
1530 | 0, /* bitpos */ | |
1531 | complain_overflow_dont,/* complain_on_overflow */ | |
1532 | nds32_elf_ignore_reloc,/* special_function */ | |
1533 | "R_NDS32_UPDATE_TA_RELA", /* name */ | |
1534 | FALSE, /* partial_inplace */ | |
1535 | 0xffff, /* src_mask */ | |
1536 | 0xffff, /* dst_mask */ | |
1537 | FALSE), /* pcrel_offset */ | |
1538 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table | |
1539 | entry for the symbol. */ | |
1540 | HOWTO (R_NDS32_9_PLTREL, /* type */ | |
1541 | 1, /* rightshift */ | |
1542 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1543 | 8, /* bitsize */ | |
1544 | TRUE, /* pc_relative */ | |
1545 | 0, /* bitpos */ | |
1546 | complain_overflow_signed, /* complain_on_overflow */ | |
1547 | bfd_elf_generic_reloc, /* special_function */ | |
1548 | "R_NDS32_9_PLTREL", /* name */ | |
1549 | FALSE, /* partial_inplace */ | |
1550 | 0xff, /* src_mask */ | |
1551 | 0xff, /* dst_mask */ | |
1552 | TRUE), /* pcrel_offset */ | |
1553 | /* Low 20 bits of PLT symbol offset relative to GOT (GP). */ | |
1554 | HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */ | |
1555 | 0, /* rightshift */ | |
1556 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1557 | 20, /* bitsize */ | |
1558 | FALSE, /* pc_relative */ | |
1559 | 0, /* bitpos */ | |
1560 | complain_overflow_dont,/* complain_on_overflow */ | |
1561 | bfd_elf_generic_reloc, /* special_function */ | |
1562 | "R_NDS32_PLT_GOTREL_LO20", /* name */ | |
1563 | FALSE, /* partial_inplace */ | |
1564 | 0x000fffff, /* src_mask */ | |
1565 | 0x000fffff, /* dst_mask */ | |
1566 | FALSE), /* pcrel_offset */ | |
1567 | /* low 15 bits of PLT symbol offset relative to GOT (GP) */ | |
1568 | HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */ | |
1569 | 0, /* rightshift */ | |
1570 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1571 | 15, /* bitsize */ | |
1572 | FALSE, /* pc_relative */ | |
1573 | 0, /* bitpos */ | |
1574 | complain_overflow_dont,/* complain_on_overflow */ | |
1575 | bfd_elf_generic_reloc, /* special_function */ | |
1576 | "R_NDS32_PLT_GOTREL_LO15", /* name */ | |
1577 | FALSE, /* partial_inplace */ | |
1578 | 0x00007fff, /* src_mask */ | |
1579 | 0x00007fff, /* dst_mask */ | |
1580 | FALSE), /* pcrel_offset */ | |
1581 | /* Low 19 bits of PLT symbol offset relative to GOT (GP). */ | |
1582 | HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */ | |
1583 | 0, /* rightshift */ | |
1584 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1585 | 19, /* bitsize */ | |
1586 | FALSE, /* pc_relative */ | |
1587 | 0, /* bitpos */ | |
1588 | complain_overflow_dont,/* complain_on_overflow */ | |
1589 | bfd_elf_generic_reloc, /* special_function */ | |
1590 | "R_NDS32_PLT_GOTREL_LO19", /* name */ | |
1591 | FALSE, /* partial_inplace */ | |
1592 | 0x0007ffff, /* src_mask */ | |
1593 | 0x0007ffff, /* dst_mask */ | |
1594 | FALSE), /* pcrel_offset */ | |
1595 | HOWTO (R_NDS32_GOT_LO15, /* type */ | |
1596 | 0, /* rightshift */ | |
1597 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1598 | 15, /* bitsize */ | |
1599 | FALSE, /* pc_relative */ | |
1600 | 0, /* bitpos */ | |
1601 | complain_overflow_dont,/* complain_on_overflow */ | |
1602 | bfd_elf_generic_reloc, /* special_function */ | |
1603 | "R_NDS32_GOT_LO15", /* name */ | |
1604 | FALSE, /* partial_inplace */ | |
1605 | 0x00007fff, /* src_mask */ | |
1606 | 0x00007fff, /* dst_mask */ | |
1607 | FALSE), /* pcrel_offset */ | |
1608 | HOWTO (R_NDS32_GOT_LO19, /* type */ | |
1609 | 0, /* rightshift */ | |
1610 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1611 | 19, /* bitsize */ | |
1612 | FALSE, /* pc_relative */ | |
1613 | 0, /* bitpos */ | |
1614 | complain_overflow_dont,/* complain_on_overflow */ | |
1615 | bfd_elf_generic_reloc, /* special_function */ | |
1616 | "R_NDS32_GOT_LO19", /* name */ | |
1617 | FALSE, /* partial_inplace */ | |
1618 | 0x0007ffff, /* src_mask */ | |
1619 | 0x0007ffff, /* dst_mask */ | |
1620 | FALSE), /* pcrel_offset */ | |
1621 | HOWTO (R_NDS32_GOTOFF_LO15, /* type */ | |
1622 | 0, /* rightshift */ | |
1623 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1624 | 15, /* bitsize */ | |
1625 | FALSE, /* pc_relative */ | |
1626 | 0, /* bitpos */ | |
1627 | complain_overflow_dont,/* complain_on_overflow */ | |
1628 | bfd_elf_generic_reloc, /* special_function */ | |
1629 | "R_NDS32_GOTOFF_LO15", /* name */ | |
1630 | FALSE, /* partial_inplace */ | |
1631 | 0x00007fff, /* src_mask */ | |
1632 | 0x00007fff, /* dst_mask */ | |
1633 | FALSE), /* pcrel_offset */ | |
1634 | HOWTO (R_NDS32_GOTOFF_LO19, /* type */ | |
1635 | 0, /* rightshift */ | |
1636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1637 | 19, /* bitsize */ | |
1638 | FALSE, /* pc_relative */ | |
1639 | 0, /* bitpos */ | |
1640 | complain_overflow_dont,/* complain_on_overflow */ | |
1641 | bfd_elf_generic_reloc, /* special_function */ | |
1642 | "R_NDS32_GOTOFF_LO19", /* name */ | |
1643 | FALSE, /* partial_inplace */ | |
1644 | 0x0007ffff, /* src_mask */ | |
1645 | 0x0007ffff, /* dst_mask */ | |
1646 | FALSE), /* pcrel_offset */ | |
1647 | /* GOT 15 bits offset. */ | |
1648 | HOWTO (R_NDS32_GOT15S2_RELA, /* type */ | |
1649 | 2, /* rightshift */ | |
1650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1651 | 15, /* bitsize */ | |
1652 | FALSE, /* pc_relative */ | |
1653 | 0, /* bitpos */ | |
1654 | complain_overflow_signed, /* complain_on_overflow */ | |
1655 | bfd_elf_generic_reloc, /* special_function */ | |
1656 | "R_NDS32_GOT15S2_RELA",/* name */ | |
1657 | FALSE, /* partial_inplace */ | |
1658 | 0x00007fff, /* src_mask */ | |
1659 | 0x00007fff, /* dst_mask */ | |
1660 | FALSE), /* pcrel_offset */ | |
1661 | /* GOT 17 bits offset. */ | |
1662 | HOWTO (R_NDS32_GOT17S2_RELA, /* type */ | |
1663 | 2, /* rightshift */ | |
1664 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1665 | 17, /* bitsize */ | |
1666 | FALSE, /* pc_relative */ | |
1667 | 0, /* bitpos */ | |
1668 | complain_overflow_signed, /* complain_on_overflow */ | |
1669 | bfd_elf_generic_reloc, /* special_function */ | |
1670 | "R_NDS32_GOT17S2_RELA",/* name */ | |
1671 | FALSE, /* partial_inplace */ | |
1672 | 0x0001ffff, /* src_mask */ | |
1673 | 0x0001ffff, /* dst_mask */ | |
1674 | FALSE), /* pcrel_offset */ | |
1675 | /* A 5 bit address. */ | |
1676 | HOWTO (R_NDS32_5_RELA, /* type */ | |
1677 | 0, /* rightshift */ | |
1678 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1679 | 5, /* bitsize */ | |
1680 | FALSE, /* pc_relative */ | |
1681 | 0, /* bitpos */ | |
1682 | complain_overflow_signed, /* complain_on_overflow */ | |
1683 | bfd_elf_generic_reloc, /* special_function */ | |
1684 | "R_NDS32_5_RELA", /* name */ | |
1685 | FALSE, /* partial_inplace */ | |
1686 | 0x1f, /* src_mask */ | |
1687 | 0x1f, /* dst_mask */ | |
1688 | FALSE), /* pcrel_offset */ | |
1689 | HOWTO (R_NDS32_10_UPCREL_RELA,/* type */ | |
1690 | 1, /* rightshift */ | |
1691 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1692 | 9, /* bitsize */ | |
1693 | TRUE, /* pc_relative */ | |
1694 | 0, /* bitpos */ | |
1695 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1696 | bfd_elf_generic_reloc, /* special_function */ | |
1697 | "R_NDS32_10_UPCREL_RELA", /* name */ | |
1698 | FALSE, /* partial_inplace */ | |
1699 | 0x1ff, /* src_mask */ | |
1700 | 0x1ff, /* dst_mask */ | |
1701 | TRUE), /* pcrel_offset */ | |
1702 | HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */ | |
1703 | 2, /* rightshift */ | |
1704 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1705 | 7, /* bitsize */ | |
1706 | FALSE, /* pc_relative */ | |
1707 | 0, /* bitpos */ | |
1708 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1709 | bfd_elf_generic_reloc, /* special_function */ | |
1710 | "R_NDS32_SDA_FP7U2_RELA", /* name */ | |
1711 | FALSE, /* partial_inplace */ | |
1712 | 0x0000007f, /* src_mask */ | |
1713 | 0x0000007f, /* dst_mask */ | |
1714 | FALSE), /* pcrel_offset */ | |
1715 | HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */ | |
1716 | 1, /* rightshift */ | |
1717 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1718 | 8, /* bitsize */ | |
1719 | TRUE, /* pc_relative */ | |
1720 | 0, /* bitpos */ | |
1721 | complain_overflow_signed, /* complain_on_overflow */ | |
1722 | bfd_elf_generic_reloc, /* special_function */ | |
1723 | "R_NDS32_WORD_9_PCREL_RELA", /* name */ | |
1724 | FALSE, /* partial_inplace */ | |
1725 | 0xff, /* src_mask */ | |
1726 | 0xff, /* dst_mask */ | |
1727 | TRUE), /* pcrel_offset */ | |
1728 | HOWTO (R_NDS32_25_ABS_RELA, /* type */ | |
1729 | 1, /* rightshift */ | |
1730 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1731 | 24, /* bitsize */ | |
1732 | FALSE, /* pc_relative */ | |
1733 | 0, /* bitpos */ | |
1734 | complain_overflow_dont,/* complain_on_overflow */ | |
1735 | bfd_elf_generic_reloc, /* special_function */ | |
1736 | "R_NDS32_25_ABS_RELA", /* name */ | |
1737 | FALSE, /* partial_inplace */ | |
1738 | 0xffffff, /* src_mask */ | |
1739 | 0xffffff, /* dst_mask */ | |
1740 | FALSE), /* pcrel_offset */ | |
1741 | ||
1742 | /* A relative 17 bit relocation for ifc, right shifted by 1. */ | |
1743 | HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */ | |
1744 | 1, /* rightshift */ | |
1745 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1746 | 16, /* bitsize */ | |
1747 | TRUE, /* pc_relative */ | |
1748 | 0, /* bitpos */ | |
1749 | complain_overflow_signed, /* complain_on_overflow */ | |
1750 | bfd_elf_generic_reloc, /* special_function */ | |
1751 | "R_NDS32_17IFC_PCREL_RELA", /* name */ | |
1752 | FALSE, /* partial_inplace */ | |
1753 | 0xffff, /* src_mask */ | |
1754 | 0xffff, /* dst_mask */ | |
1755 | TRUE), /* pcrel_offset */ | |
1756 | ||
1757 | /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */ | |
1758 | HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */ | |
1759 | 1, /* rightshift */ | |
1760 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
1761 | 9, /* bitsize */ | |
1762 | TRUE, /* pc_relative */ | |
1763 | 0, /* bitpos */ | |
1764 | complain_overflow_unsigned, /* complain_on_overflow */ | |
1765 | bfd_elf_generic_reloc, /* special_function */ | |
1766 | "R_NDS32_10IFCU_PCREL_RELA", /* name */ | |
1767 | FALSE, /* partial_inplace */ | |
1768 | 0x1ff, /* src_mask */ | |
1769 | 0x1ff, /* dst_mask */ | |
1770 | TRUE), /* pcrel_offset */ | |
1c8f6a4d KLC |
1771 | |
1772 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1773 | HOWTO (R_NDS32_TLS_LE_HI20, /* type */ | |
1774 | 12, /* rightshift */ | |
1775 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1776 | 20, /* bitsize */ | |
1777 | FALSE, /* pc_relative */ | |
1778 | 0, /* bitpos */ | |
1779 | complain_overflow_dont, /* complain_on_overflow */ | |
1780 | bfd_elf_generic_reloc, /* special_function */ | |
1781 | "R_NDS32_TLS_LE_HI20", /* name */ | |
1782 | FALSE, /* partial_inplace */ | |
1783 | 0x000fffff, /* src_mask */ | |
1784 | 0x000fffff, /* dst_mask */ | |
1785 | FALSE), /* pcrel_offset */ | |
1786 | HOWTO (R_NDS32_TLS_LE_LO12, /* type */ | |
1787 | 0, /* rightshift */ | |
1788 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1789 | 12, /* bitsize */ | |
1790 | FALSE, /* pc_relative */ | |
1791 | 0, /* bitpos */ | |
1792 | complain_overflow_dont, /* complain_on_overflow */ | |
1793 | bfd_elf_generic_reloc, /* special_function */ | |
1794 | "R_NDS32_TLS_LE_LO12", /* name */ | |
1795 | FALSE, /* partial_inplace */ | |
1796 | 0x00000fff, /* src_mask */ | |
1797 | 0x00000fff, /* dst_mask */ | |
1798 | FALSE), /* pcrel_offset */ | |
1799 | ||
1800 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ | |
1801 | HOWTO (R_NDS32_TLS_IE_HI20, /* type */ | |
1802 | 12, /* rightshift */ | |
1803 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1804 | 20, /* bitsize */ | |
1805 | FALSE, /* pc_relative */ | |
1806 | 0, /* bitpos */ | |
1807 | complain_overflow_dont, /* complain_on_overflow */ | |
1808 | bfd_elf_generic_reloc, /* special_function */ | |
1809 | "R_NDS32_TLS_IE_HI20", /* name */ | |
1810 | FALSE, /* partial_inplace */ | |
1811 | 0x000fffff, /* src_mask */ | |
1812 | 0x000fffff, /* dst_mask */ | |
1813 | FALSE), /* pcrel_offset */ | |
1814 | HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */ | |
1815 | 2, /* rightshift */ | |
1816 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1817 | 10, /* bitsize */ | |
1818 | FALSE, /* pc_relative */ | |
1819 | 0, /* bitpos */ | |
1820 | complain_overflow_dont, /* complain_on_overflow */ | |
1821 | bfd_elf_generic_reloc, /* special_function */ | |
1822 | "R_NDS32_TLS_IE_LO12S2", /* name */ | |
1823 | FALSE, /* partial_inplace */ | |
1824 | 0x000003ff, /* src_mask */ | |
1825 | 0x000003ff, /* dst_mask */ | |
1826 | FALSE), /* pcrel_offset */ | |
1827 | /* Mark a TLS IE entry in GOT. */ | |
1828 | HOWTO (R_NDS32_TLS_TPOFF, /* type */ | |
1829 | 0, /* rightshift */ | |
1830 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1831 | 32, /* bitsize */ | |
1832 | FALSE, /* pc_relative */ | |
1833 | 0, /* bitpos */ | |
1834 | complain_overflow_bitfield, /* complain_on_overflow */ | |
1835 | bfd_elf_generic_reloc, /* special_function */ | |
1836 | "R_NDS32_TLS_TPOFF", /* name */ | |
1837 | FALSE, /* partial_inplace */ | |
1838 | 0xffffffff, /* src_mask */ | |
1839 | 0xffffffff, /* dst_mask */ | |
1840 | FALSE), /* pcrel_offset */ | |
1841 | /* A 20 bit address. */ | |
1842 | HOWTO (R_NDS32_TLS_LE_20, /* type */ | |
1843 | 0, /* rightshift */ | |
1844 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1845 | 20, /* bitsize */ | |
1846 | FALSE, /* pc_relative */ | |
1847 | 0, /* bitpos */ | |
1848 | complain_overflow_signed, /* complain_on_overflow */ | |
1849 | bfd_elf_generic_reloc, /* special_function */ | |
1850 | "R_NDS32_TLS_LE_20", /* name */ | |
1851 | FALSE, /* partial_inplace */ | |
1852 | 0xfffff, /* src_mask */ | |
1853 | 0xfffff, /* dst_mask */ | |
1854 | FALSE), /* pcrel_offset */ | |
1855 | HOWTO (R_NDS32_TLS_LE_15S0, /* type */ | |
1856 | 0, /* rightshift */ | |
1857 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1858 | 15, /* bitsize */ | |
1859 | FALSE, /* pc_relative */ | |
1860 | 0, /* bitpos */ | |
1861 | complain_overflow_signed, /* complain_on_overflow */ | |
1862 | bfd_elf_generic_reloc, /* special_function */ | |
1863 | "R_NDS32_TLS_LE_15S0", /* name */ | |
1864 | FALSE, /* partial_inplace */ | |
1865 | 0x7fff, /* src_mask */ | |
1866 | 0x7fff, /* dst_mask */ | |
1867 | FALSE), /* pcrel_offset */ | |
1868 | HOWTO (R_NDS32_TLS_LE_15S1, /* type */ | |
1869 | 1, /* rightshift */ | |
1870 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1871 | 15, /* bitsize */ | |
1872 | FALSE, /* pc_relative */ | |
1873 | 0, /* bitpos */ | |
1874 | complain_overflow_signed, /* complain_on_overflow */ | |
1875 | bfd_elf_generic_reloc, /* special_function */ | |
1876 | "R_NDS32_TLS_LE_15S1", /* name */ | |
1877 | FALSE, /* partial_inplace */ | |
1878 | 0x7fff, /* src_mask */ | |
1879 | 0x7fff, /* dst_mask */ | |
1880 | FALSE), /* pcrel_offset */ | |
1881 | HOWTO (R_NDS32_TLS_LE_15S2, /* type */ | |
1882 | 2, /* rightshift */ | |
1883 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1884 | 15, /* bitsize */ | |
1885 | FALSE, /* pc_relative */ | |
1886 | 0, /* bitpos */ | |
1887 | complain_overflow_signed, /* complain_on_overflow */ | |
1888 | bfd_elf_generic_reloc, /* special_function */ | |
1889 | "R_NDS32_TLS_LE_15S2", /* name */ | |
1890 | FALSE, /* partial_inplace */ | |
1891 | 0x7fff, /* src_mask */ | |
1892 | 0x7fff, /* dst_mask */ | |
1893 | FALSE), /* pcrel_offset */ | |
1894 | ||
1895 | /* Relax hint for unconditional call sequence */ | |
1896 | HOWTO (R_NDS32_LONGCALL4, /* type */ | |
1897 | 0, /* rightshift */ | |
1898 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1899 | 32, /* bitsize */ | |
1900 | FALSE, /* pc_relative */ | |
1901 | 0, /* bitpos */ | |
1902 | complain_overflow_dont, /* complain_on_overflow */ | |
1903 | nds32_elf_ignore_reloc, /* special_function */ | |
1904 | "R_NDS32_LONGCALL4", /* name */ | |
1905 | FALSE, /* partial_inplace */ | |
1906 | 0xffffffff, /* src_mask */ | |
1907 | 0xffffffff, /* dst_mask */ | |
1908 | FALSE), /* pcrel_offset */ | |
1909 | ||
1910 | /* Relax hint for conditional call sequence. */ | |
1911 | HOWTO (R_NDS32_LONGCALL5, /* type */ | |
1912 | 0, /* rightshift */ | |
1913 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1914 | 32, /* bitsize */ | |
1915 | FALSE, /* pc_relative */ | |
1916 | 0, /* bitpos */ | |
1917 | complain_overflow_dont, /* complain_on_overflow */ | |
1918 | nds32_elf_ignore_reloc, /* special_function */ | |
1919 | "R_NDS32_LONGCALL5", /* name */ | |
1920 | FALSE, /* partial_inplace */ | |
1921 | 0xffffffff, /* src_mask */ | |
1922 | 0xffffffff, /* dst_mask */ | |
1923 | FALSE), /* pcrel_offset */ | |
1924 | ||
1925 | /* Relax hint for conditional call sequence. */ | |
1926 | HOWTO (R_NDS32_LONGCALL6, /* type */ | |
1927 | 0, /* rightshift */ | |
1928 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1929 | 32, /* bitsize */ | |
1930 | FALSE, /* pc_relative */ | |
1931 | 0, /* bitpos */ | |
1932 | complain_overflow_dont, /* complain_on_overflow */ | |
1933 | nds32_elf_ignore_reloc, /* special_function */ | |
1934 | "R_NDS32_LONGCALL6", /* name */ | |
1935 | FALSE, /* partial_inplace */ | |
1936 | 0xffffffff, /* src_mask */ | |
1937 | 0xffffffff, /* dst_mask */ | |
1938 | FALSE), /* pcrel_offset */ | |
1939 | ||
1940 | /* Relax hint for unconditional branch sequence. */ | |
1941 | HOWTO (R_NDS32_LONGJUMP4, /* type */ | |
1942 | 0, /* rightshift */ | |
1943 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1944 | 32, /* bitsize */ | |
1945 | FALSE, /* pc_relative */ | |
1946 | 0, /* bitpos */ | |
1947 | complain_overflow_dont, /* complain_on_overflow */ | |
1948 | nds32_elf_ignore_reloc, /* special_function */ | |
1949 | "R_NDS32_LONGJUMP4", /* name */ | |
1950 | FALSE, /* partial_inplace */ | |
1951 | 0xffffffff, /* src_mask */ | |
1952 | 0xffffffff, /* dst_mask */ | |
1953 | FALSE), /* pcrel_offset */ | |
1954 | ||
1955 | /* Relax hint for conditional branch sequence. */ | |
1956 | HOWTO (R_NDS32_LONGJUMP5, /* type */ | |
1957 | 0, /* rightshift */ | |
1958 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1959 | 32, /* bitsize */ | |
1960 | FALSE, /* pc_relative */ | |
1961 | 0, /* bitpos */ | |
1962 | complain_overflow_dont, /* complain_on_overflow */ | |
1963 | nds32_elf_ignore_reloc, /* special_function */ | |
1964 | "R_NDS32_LONGJUMP5", /* name */ | |
1965 | FALSE, /* partial_inplace */ | |
1966 | 0xffffffff, /* src_mask */ | |
1967 | 0xffffffff, /* dst_mask */ | |
1968 | FALSE), /* pcrel_offset */ | |
1969 | ||
1970 | /* Relax hint for conditional branch sequence. */ | |
1971 | HOWTO (R_NDS32_LONGJUMP6, /* type */ | |
1972 | 0, /* rightshift */ | |
1973 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1974 | 32, /* bitsize */ | |
1975 | FALSE, /* pc_relative */ | |
1976 | 0, /* bitpos */ | |
1977 | complain_overflow_dont, /* complain_on_overflow */ | |
1978 | nds32_elf_ignore_reloc, /* special_function */ | |
1979 | "R_NDS32_LONGJUMP6", /* name */ | |
1980 | FALSE, /* partial_inplace */ | |
1981 | 0xffffffff, /* src_mask */ | |
1982 | 0xffffffff, /* dst_mask */ | |
1983 | FALSE), /* pcrel_offset */ | |
1984 | ||
1985 | /* Relax hint for conditional branch sequence. */ | |
1986 | HOWTO (R_NDS32_LONGJUMP7, /* type */ | |
1987 | 0, /* rightshift */ | |
1988 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
1989 | 32, /* bitsize */ | |
1990 | FALSE, /* pc_relative */ | |
1991 | 0, /* bitpos */ | |
1992 | complain_overflow_dont, /* complain_on_overflow */ | |
1993 | nds32_elf_ignore_reloc, /* special_function */ | |
1994 | "R_NDS32_LONGJUMP7", /* name */ | |
1995 | FALSE, /* partial_inplace */ | |
1996 | 0xffffffff, /* src_mask */ | |
1997 | 0xffffffff, /* dst_mask */ | |
1998 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
1999 | }; |
2000 | ||
2001 | /* Relocations used for relaxation. */ | |
2002 | static reloc_howto_type nds32_elf_relax_howto_table[] = | |
2003 | { | |
2004 | HOWTO (R_NDS32_RELAX_ENTRY, /* type */ | |
2005 | 0, /* rightshift */ | |
2006 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2007 | 32, /* bitsize */ | |
2008 | FALSE, /* pc_relative */ | |
2009 | 0, /* bitpos */ | |
2010 | complain_overflow_dont,/* complain_on_overflow */ | |
2011 | nds32_elf_ignore_reloc,/* special_function */ | |
2012 | "R_NDS32_RELAX_ENTRY", /* name */ | |
2013 | FALSE, /* partial_inplace */ | |
2014 | 0xffffffff, /* src_mask */ | |
2015 | 0xffffffff, /* dst_mask */ | |
2016 | FALSE), /* pcrel_offset */ | |
2017 | HOWTO (R_NDS32_GOT_SUFF, /* type */ | |
2018 | 0, /* rightshift */ | |
2019 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2020 | 32, /* bitsize */ | |
2021 | FALSE, /* pc_relative */ | |
2022 | 0, /* bitpos */ | |
2023 | complain_overflow_dont,/* complain_on_overflow */ | |
2024 | nds32_elf_ignore_reloc,/* special_function */ | |
2025 | "R_NDS32_GOT_SUFF", /* name */ | |
2026 | FALSE, /* partial_inplace */ | |
2027 | 0xffffffff, /* src_mask */ | |
2028 | 0xffffffff, /* dst_mask */ | |
2029 | FALSE), /* pcrel_offset */ | |
2030 | HOWTO (R_NDS32_GOTOFF_SUFF, /* type */ | |
2031 | 0, /* rightshift */ | |
2032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2033 | 32, /* bitsize */ | |
2034 | FALSE, /* pc_relative */ | |
2035 | 0, /* bitpos */ | |
2036 | complain_overflow_bitfield, /* complain_on_overflow */ | |
2037 | nds32_elf_ignore_reloc,/* special_function */ | |
2038 | "R_NDS32_GOTOFF_SUFF", /* name */ | |
2039 | FALSE, /* partial_inplace */ | |
2040 | 0xffffffff, /* src_mask */ | |
2041 | 0xffffffff, /* dst_mask */ | |
2042 | FALSE), /* pcrel_offset */ | |
2043 | HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */ | |
2044 | 0, /* rightshift */ | |
2045 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2046 | 32, /* bitsize */ | |
2047 | FALSE, /* pc_relative */ | |
2048 | 0, /* bitpos */ | |
2049 | complain_overflow_dont,/* complain_on_overflow */ | |
2050 | nds32_elf_ignore_reloc,/* special_function */ | |
2051 | "R_NDS32_PLT_GOT_SUFF",/* name */ | |
2052 | FALSE, /* partial_inplace */ | |
2053 | 0xffffffff, /* src_mask */ | |
2054 | 0xffffffff, /* dst_mask */ | |
2055 | FALSE), /* pcrel_offset */ | |
2056 | HOWTO (R_NDS32_MULCALL_SUFF, /* type */ | |
2057 | 0, /* rightshift */ | |
2058 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2059 | 32, /* bitsize */ | |
2060 | FALSE, /* pc_relative */ | |
2061 | 0, /* bitpos */ | |
2062 | complain_overflow_dont,/* complain_on_overflow */ | |
2063 | nds32_elf_ignore_reloc,/* special_function */ | |
2064 | "R_NDS32_MULCALL_SUFF",/* name */ | |
2065 | FALSE, /* partial_inplace */ | |
2066 | 0xffffffff, /* src_mask */ | |
2067 | 0xffffffff, /* dst_mask */ | |
2068 | FALSE), /* pcrel_offset */ | |
2069 | HOWTO (R_NDS32_PTR, /* type */ | |
2070 | 0, /* rightshift */ | |
2071 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2072 | 32, /* bitsize */ | |
2073 | FALSE, /* pc_relative */ | |
2074 | 0, /* bitpos */ | |
2075 | complain_overflow_dont,/* complain_on_overflow */ | |
2076 | nds32_elf_ignore_reloc,/* special_function */ | |
2077 | "R_NDS32_PTR", /* name */ | |
2078 | FALSE, /* partial_inplace */ | |
2079 | 0xffffffff, /* src_mask */ | |
2080 | 0xffffffff, /* dst_mask */ | |
2081 | FALSE), /* pcrel_offset */ | |
2082 | HOWTO (R_NDS32_PTR_COUNT, /* type */ | |
2083 | 0, /* rightshift */ | |
2084 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2085 | 32, /* bitsize */ | |
2086 | FALSE, /* pc_relative */ | |
2087 | 0, /* bitpos */ | |
2088 | complain_overflow_dont,/* complain_on_overflow */ | |
2089 | nds32_elf_ignore_reloc,/* special_function */ | |
2090 | "R_NDS32_PTR_COUNT", /* name */ | |
2091 | FALSE, /* partial_inplace */ | |
2092 | 0xffffffff, /* src_mask */ | |
2093 | 0xffffffff, /* dst_mask */ | |
2094 | FALSE), /* pcrel_offset */ | |
2095 | HOWTO (R_NDS32_PTR_RESOLVED, /* type */ | |
2096 | 0, /* rightshift */ | |
2097 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2098 | 32, /* bitsize */ | |
2099 | FALSE, /* pc_relative */ | |
2100 | 0, /* bitpos */ | |
2101 | complain_overflow_dont,/* complain_on_overflow */ | |
2102 | nds32_elf_ignore_reloc,/* special_function */ | |
2103 | "R_NDS32_PTR_RESOLVED",/* name */ | |
2104 | FALSE, /* partial_inplace */ | |
2105 | 0xffffffff, /* src_mask */ | |
2106 | 0xffffffff, /* dst_mask */ | |
2107 | FALSE), /* pcrel_offset */ | |
2108 | HOWTO (R_NDS32_PLTBLOCK, /* type */ | |
2109 | 0, /* rightshift */ | |
2110 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2111 | 32, /* bitsize */ | |
2112 | FALSE, /* pc_relative */ | |
2113 | 0, /* bitpos */ | |
2114 | complain_overflow_dont,/* complain_on_overflow */ | |
2115 | nds32_elf_ignore_reloc,/* special_function */ | |
2116 | "R_NDS32_PLTBLOCK", /* name */ | |
2117 | FALSE, /* partial_inplace */ | |
2118 | 0xffffffff, /* src_mask */ | |
2119 | 0xffffffff, /* dst_mask */ | |
2120 | FALSE), /* pcrel_offset */ | |
2121 | HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */ | |
2122 | 0, /* rightshift */ | |
2123 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2124 | 32, /* bitsize */ | |
2125 | FALSE, /* pc_relative */ | |
2126 | 0, /* bitpos */ | |
2127 | complain_overflow_dont,/* complain_on_overflow */ | |
2128 | nds32_elf_ignore_reloc,/* special_function */ | |
2129 | "R_NDS32_RELAX_REGION_BEGIN", /* name */ | |
2130 | FALSE, /* partial_inplace */ | |
2131 | 0xffffffff, /* src_mask */ | |
2132 | 0xffffffff, /* dst_mask */ | |
2133 | FALSE), /* pcrel_offset */ | |
2134 | HOWTO (R_NDS32_RELAX_REGION_END, /* type */ | |
2135 | 0, /* rightshift */ | |
2136 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2137 | 32, /* bitsize */ | |
2138 | FALSE, /* pc_relative */ | |
2139 | 0, /* bitpos */ | |
2140 | complain_overflow_dont,/* complain_on_overflow */ | |
2141 | nds32_elf_ignore_reloc,/* special_function */ | |
2142 | "R_NDS32_RELAX_REGION_END", /* name */ | |
2143 | FALSE, /* partial_inplace */ | |
2144 | 0xffffffff, /* src_mask */ | |
2145 | 0xffffffff, /* dst_mask */ | |
2146 | FALSE), /* pcrel_offset */ | |
2147 | HOWTO (R_NDS32_MINUEND, /* type */ | |
2148 | 0, /* rightshift */ | |
2149 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2150 | 32, /* bitsize */ | |
2151 | FALSE, /* pc_relative */ | |
2152 | 0, /* bitpos */ | |
2153 | complain_overflow_dont,/* complain_on_overflow */ | |
2154 | nds32_elf_ignore_reloc,/* special_function */ | |
2155 | "R_NDS32_MINUEND", /* name */ | |
2156 | FALSE, /* partial_inplace */ | |
2157 | 0xffffffff, /* src_mask */ | |
2158 | 0xffffffff, /* dst_mask */ | |
2159 | FALSE), /* pcrel_offset */ | |
2160 | HOWTO (R_NDS32_SUBTRAHEND, /* type */ | |
2161 | 0, /* rightshift */ | |
2162 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2163 | 32, /* bitsize */ | |
2164 | FALSE, /* pc_relative */ | |
2165 | 0, /* bitpos */ | |
2166 | complain_overflow_dont,/* complain_on_overflow */ | |
2167 | nds32_elf_ignore_reloc,/* special_function */ | |
2168 | "R_NDS32_SUBTRAHEND", /* name */ | |
2169 | FALSE, /* partial_inplace */ | |
2170 | 0xffffffff, /* src_mask */ | |
2171 | 0xffffffff, /* dst_mask */ | |
2172 | FALSE), /* pcrel_offset */ | |
2173 | HOWTO (R_NDS32_DIFF8, /* type */ | |
2174 | 0, /* rightshift */ | |
2175 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2176 | 8, /* bitsize */ | |
2177 | FALSE, /* pc_relative */ | |
2178 | 0, /* bitpos */ | |
2179 | complain_overflow_dont,/* complain_on_overflow */ | |
2180 | nds32_elf_ignore_reloc,/* special_function */ | |
2181 | "R_NDS32_DIFF8", /* name */ | |
2182 | FALSE, /* partial_inplace */ | |
2183 | 0x000000ff, /* src_mask */ | |
2184 | 0x000000ff, /* dst_mask */ | |
2185 | FALSE), /* pcrel_offset */ | |
2186 | HOWTO (R_NDS32_DIFF16, /* type */ | |
2187 | 0, /* rightshift */ | |
2188 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
2189 | 16, /* bitsize */ | |
2190 | FALSE, /* pc_relative */ | |
2191 | 0, /* bitpos */ | |
2192 | complain_overflow_dont,/* complain_on_overflow */ | |
2193 | nds32_elf_ignore_reloc,/* special_function */ | |
2194 | "R_NDS32_DIFF16", /* name */ | |
2195 | FALSE, /* partial_inplace */ | |
2196 | 0x0000ffff, /* src_mask */ | |
2197 | 0x0000ffff, /* dst_mask */ | |
2198 | FALSE), /* pcrel_offset */ | |
2199 | HOWTO (R_NDS32_DIFF32, /* type */ | |
2200 | 0, /* rightshift */ | |
2201 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2202 | 32, /* bitsize */ | |
2203 | FALSE, /* pc_relative */ | |
2204 | 0, /* bitpos */ | |
2205 | complain_overflow_dont,/* complain_on_overflow */ | |
2206 | nds32_elf_ignore_reloc,/* special_function */ | |
2207 | "R_NDS32_DIFF32", /* name */ | |
2208 | FALSE, /* partial_inplace */ | |
2209 | 0xffffffff, /* src_mask */ | |
2210 | 0xffffffff, /* dst_mask */ | |
2211 | FALSE), /* pcrel_offset */ | |
2212 | HOWTO (R_NDS32_DIFF_ULEB128, /* type */ | |
2213 | 0, /* rightshift */ | |
2214 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
2215 | 0, /* bitsize */ | |
2216 | FALSE, /* pc_relative */ | |
2217 | 0, /* bitpos */ | |
2218 | complain_overflow_dont,/* complain_on_overflow */ | |
2219 | nds32_elf_ignore_reloc,/* special_function */ | |
2220 | "R_NDS32_DIFF_ULEB128",/* name */ | |
2221 | FALSE, /* partial_inplace */ | |
2222 | 0xffffffff, /* src_mask */ | |
2223 | 0xffffffff, /* dst_mask */ | |
2224 | FALSE), /* pcrel_offset */ | |
2225 | HOWTO (R_NDS32_DATA, /* type */ | |
2226 | 0, /* rightshift */ | |
2227 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2228 | 32, /* bitsize */ | |
2229 | FALSE, /* pc_relative */ | |
2230 | 0, /* bitpos */ | |
2231 | complain_overflow_dont,/* complain_on_overflow */ | |
2232 | nds32_elf_ignore_reloc,/* special_function */ | |
2233 | "R_NDS32_DATA", /* name */ | |
2234 | FALSE, /* partial_inplace */ | |
2235 | 0xffffffff, /* src_mask */ | |
2236 | 0xffffffff, /* dst_mask */ | |
2237 | FALSE), /* pcrel_offset */ | |
2238 | HOWTO (R_NDS32_TRAN, /* type */ | |
2239 | 0, /* rightshift */ | |
2240 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2241 | 32, /* bitsize */ | |
2242 | FALSE, /* pc_relative */ | |
2243 | 0, /* bitpos */ | |
2244 | complain_overflow_dont,/* complain_on_overflow */ | |
2245 | nds32_elf_ignore_reloc,/* special_function */ | |
2246 | "R_NDS32_TRAN", /* name */ | |
2247 | FALSE, /* partial_inplace */ | |
2248 | 0xffffffff, /* src_mask */ | |
2249 | 0xffffffff, /* dst_mask */ | |
2250 | FALSE), /* pcrel_offset */ | |
1c8f6a4d KLC |
2251 | HOWTO (R_NDS32_TLS_LE_ADD, /* type */ |
2252 | 0, /* rightshift */ | |
2253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2254 | 32, /* bitsize */ | |
2255 | FALSE, /* pc_relative */ | |
2256 | 0, /* bitpos */ | |
2257 | complain_overflow_dont, /* complain_on_overflow */ | |
2258 | nds32_elf_ignore_reloc, /* special_function */ | |
2259 | "R_NDS32_TLS_LE_ADD", /* name */ | |
2260 | FALSE, /* partial_inplace */ | |
2261 | 0xffffffff, /* src_mask */ | |
2262 | 0xffffffff, /* dst_mask */ | |
2263 | FALSE), /* pcrel_offset */ | |
2264 | HOWTO (R_NDS32_TLS_LE_LS, /* type */ | |
2265 | 0, /* rightshift */ | |
2266 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2267 | 32, /* bitsize */ | |
2268 | FALSE, /* pc_relative */ | |
2269 | 0, /* bitpos */ | |
2270 | complain_overflow_dont, /* complain_on_overflow */ | |
2271 | nds32_elf_ignore_reloc, /* special_function */ | |
2272 | "R_NDS32_TLS_LE_LS", /* name */ | |
2273 | FALSE, /* partial_inplace */ | |
2274 | 0xffffffff, /* src_mask */ | |
2275 | 0xffffffff, /* dst_mask */ | |
2276 | FALSE), /* pcrel_offset */ | |
2277 | HOWTO (R_NDS32_EMPTY, /* type */ | |
2278 | 0, /* rightshift */ | |
2279 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
2280 | 32, /* bitsize */ | |
2281 | FALSE, /* pc_relative */ | |
2282 | 0, /* bitpos */ | |
2283 | complain_overflow_dont, /* complain_on_overflow */ | |
2284 | nds32_elf_ignore_reloc, /* special_function */ | |
2285 | "R_NDS32_EMPTY", /* name */ | |
2286 | FALSE, /* partial_inplace */ | |
2287 | 0xffffffff, /* src_mask */ | |
2288 | 0xffffffff, /* dst_mask */ | |
2289 | FALSE), /* pcrel_offset */ | |
35c08157 KLC |
2290 | }; |
2291 | ||
2292 | \f | |
2293 | /* nds32_insertion_sort sorts an array with nmemb elements of size size. | |
2294 | This prototype is the same as qsort (). */ | |
2295 | ||
2296 | void | |
2297 | nds32_insertion_sort (void *base, size_t nmemb, size_t size, | |
2298 | int (*compar) (const void *lhs, const void *rhs)) | |
2299 | { | |
2300 | char *ptr = (char *) base; | |
1c8f6a4d | 2301 | int i, j; |
35c08157 KLC |
2302 | char *tmp = alloca (size); |
2303 | ||
2304 | /* If i is less than j, i is inserted before j. | |
2305 | ||
2306 | |---- j ----- i --------------| | |
2307 | \ / \ / | |
2308 | sorted unsorted | |
2309 | */ | |
2310 | ||
1c8f6a4d | 2311 | for (i = 1; i < (int) nmemb; i++) |
35c08157 | 2312 | { |
1c8f6a4d KLC |
2313 | for (j = (i - 1); j >= 0; j--) |
2314 | if (compar (ptr + i * size, ptr + j * size) >= 0) | |
35c08157 KLC |
2315 | break; |
2316 | ||
1c8f6a4d KLC |
2317 | j++; |
2318 | ||
35c08157 | 2319 | if (i == j) |
1c8f6a4d | 2320 | continue; /* i is in order. */ |
35c08157 KLC |
2321 | |
2322 | memcpy (tmp, ptr + i * size, size); | |
2323 | memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size); | |
2324 | memcpy (ptr + j * size, tmp, size); | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | /* Sort relocation by r_offset. | |
2329 | ||
2330 | We didn't use qsort () in stdlib, because quick-sort is not a stable sorting | |
2331 | algorithm. Relocations at the same r_offset must keep their order. | |
2332 | For example, RELAX_ENTRY must be the very first relocation entry. | |
2333 | ||
2334 | Currently, this function implements insertion-sort. | |
2335 | ||
2336 | FIXME: If we already sort them in assembler, why bother sort them | |
2337 | here again? */ | |
2338 | ||
2339 | static int | |
2340 | compar_reloc (const void *lhs, const void *rhs) | |
2341 | { | |
2342 | const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs; | |
2343 | const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs; | |
2344 | ||
2345 | if (l->r_offset > r->r_offset) | |
2346 | return 1; | |
2347 | else if (l->r_offset == r->r_offset) | |
2348 | return 0; | |
2349 | else | |
2350 | return -1; | |
2351 | } | |
2352 | ||
2353 | /* Functions listed below are only used for old relocs. | |
2354 | * nds32_elf_9_pcrel_reloc | |
2355 | * nds32_elf_do_9_pcrel_reloc | |
2356 | * nds32_elf_hi20_reloc | |
2357 | * nds32_elf_relocate_hi20 | |
2358 | * nds32_elf_lo12_reloc | |
2359 | * nds32_elf_sda15_reloc | |
2360 | * nds32_elf_generic_reloc | |
2361 | */ | |
2362 | ||
2363 | /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */ | |
2364 | ||
2365 | static bfd_reloc_status_type | |
2366 | nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
2367 | void *data, asection *input_section, bfd *output_bfd, | |
2368 | char **error_message ATTRIBUTE_UNUSED) | |
2369 | { | |
2370 | /* This part is from bfd_elf_generic_reloc. */ | |
2371 | if (output_bfd != (bfd *) NULL | |
2372 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2373 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2374 | { | |
2375 | reloc_entry->address += input_section->output_offset; | |
2376 | return bfd_reloc_ok; | |
2377 | } | |
2378 | ||
2379 | if (output_bfd != NULL) | |
2380 | { | |
2381 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2382 | return bfd_reloc_continue; | |
2383 | } | |
2384 | ||
2385 | return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto, | |
2386 | input_section, | |
2387 | data, reloc_entry->address, | |
2388 | symbol->section, | |
2389 | (symbol->value | |
2390 | + symbol->section->output_section->vma | |
2391 | + symbol->section->output_offset), | |
2392 | reloc_entry->addend); | |
2393 | } | |
2394 | ||
2395 | /* Utility to actually perform an R_NDS32_9_PCREL reloc. */ | |
2396 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) | |
2397 | ||
2398 | static bfd_reloc_status_type | |
2399 | nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto, | |
2400 | asection *input_section, bfd_byte *data, | |
1c8f6a4d KLC |
2401 | bfd_vma offset, |
2402 | asection *symbol_section ATTRIBUTE_UNUSED, | |
35c08157 KLC |
2403 | bfd_vma symbol_value, bfd_vma addend) |
2404 | { | |
2405 | bfd_signed_vma relocation; | |
2406 | unsigned short x; | |
2407 | bfd_reloc_status_type status; | |
2408 | ||
2409 | /* Sanity check the address (offset in section). */ | |
2410 | if (offset > bfd_get_section_limit (abfd, input_section)) | |
2411 | return bfd_reloc_outofrange; | |
2412 | ||
2413 | relocation = symbol_value + addend; | |
2414 | /* Make it pc relative. */ | |
2415 | relocation -= (input_section->output_section->vma | |
2416 | + input_section->output_offset); | |
2417 | /* These jumps mask off the lower two bits of the current address | |
2418 | before doing pcrel calculations. */ | |
2419 | relocation -= (offset & -(bfd_vma) 2); | |
2420 | ||
1c8f6a4d | 2421 | if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1) |
35c08157 KLC |
2422 | status = bfd_reloc_overflow; |
2423 | else | |
2424 | status = bfd_reloc_ok; | |
2425 | ||
2426 | x = bfd_getb16 (data + offset); | |
2427 | ||
2428 | relocation >>= howto->rightshift; | |
2429 | relocation <<= howto->bitpos; | |
2430 | x = (x & ~howto->dst_mask) | |
2431 | | (((x & howto->src_mask) + relocation) & howto->dst_mask); | |
2432 | ||
2433 | bfd_putb16 ((bfd_vma) x, data + offset); | |
2434 | ||
2435 | return status; | |
2436 | } | |
2437 | ||
2438 | /* Handle the R_NDS32_HI20_[SU]LO relocs. | |
2439 | HI20_SLO is for the add3 and load/store with displacement instructions. | |
2440 | HI20 is for the or3 instruction. | |
2441 | For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to | |
2442 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then | |
2443 | we must add one to the high 16 bytes (which will get subtracted off when | |
2444 | the low 16 bits are added). | |
2445 | These relocs have to be done in combination with an R_NDS32_LO12 reloc | |
2446 | because there is a carry from the LO12 to the HI20. Here we just save | |
2447 | the information we need; we do the actual relocation when we see the LO12. | |
2448 | This code is copied from the elf32-mips.c. We also support an arbitrary | |
2449 | number of HI20 relocs to be associated with a single LO12 reloc. The | |
2450 | assembler sorts the relocs to ensure each HI20 immediately precedes its | |
2451 | LO12. However if there are multiple copies, the assembler may not find | |
2452 | the real LO12 so it picks the first one it finds. */ | |
2453 | ||
2454 | struct nds32_hi20 | |
2455 | { | |
2456 | struct nds32_hi20 *next; | |
2457 | bfd_byte *addr; | |
2458 | bfd_vma addend; | |
2459 | }; | |
2460 | ||
2461 | static struct nds32_hi20 *nds32_hi20_list; | |
2462 | ||
2463 | static bfd_reloc_status_type | |
2464 | nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2465 | asymbol *symbol, void *data, asection *input_section, | |
2466 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2467 | { | |
2468 | bfd_reloc_status_type ret; | |
2469 | bfd_vma relocation; | |
2470 | struct nds32_hi20 *n; | |
2471 | ||
2472 | /* This part is from bfd_elf_generic_reloc. | |
2473 | If we're relocating, and this an external symbol, we don't want | |
2474 | to change anything. */ | |
2475 | if (output_bfd != (bfd *) NULL | |
2476 | && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) | |
2477 | { | |
2478 | reloc_entry->address += input_section->output_offset; | |
2479 | return bfd_reloc_ok; | |
2480 | } | |
2481 | ||
2482 | /* Sanity check the address (offset in section). */ | |
2483 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) | |
2484 | return bfd_reloc_outofrange; | |
2485 | ||
2486 | ret = bfd_reloc_ok; | |
2487 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2488 | ret = bfd_reloc_undefined; | |
2489 | ||
2490 | if (bfd_is_com_section (symbol->section)) | |
2491 | relocation = 0; | |
2492 | else | |
2493 | relocation = symbol->value; | |
2494 | ||
2495 | relocation += symbol->section->output_section->vma; | |
2496 | relocation += symbol->section->output_offset; | |
2497 | relocation += reloc_entry->addend; | |
2498 | ||
2499 | /* Save the information, and let LO12 do the actual relocation. */ | |
2500 | n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n); | |
2501 | if (n == NULL) | |
2502 | return bfd_reloc_outofrange; | |
2503 | ||
2504 | n->addr = (bfd_byte *) data + reloc_entry->address; | |
2505 | n->addend = relocation; | |
2506 | n->next = nds32_hi20_list; | |
2507 | nds32_hi20_list = n; | |
2508 | ||
2509 | if (output_bfd != (bfd *) NULL) | |
2510 | reloc_entry->address += input_section->output_offset; | |
2511 | ||
2512 | return ret; | |
2513 | } | |
2514 | ||
2515 | /* Handle an NDS32 ELF HI20 reloc. */ | |
2516 | ||
2517 | static void | |
2518 | nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED, | |
2519 | int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi, | |
2520 | Elf_Internal_Rela *rello, bfd_byte *contents, | |
2521 | bfd_vma addend) | |
2522 | { | |
2523 | unsigned long insn; | |
2524 | bfd_vma addlo; | |
2525 | ||
2526 | insn = bfd_getb32 (contents + relhi->r_offset); | |
2527 | ||
2528 | addlo = bfd_getb32 (contents + rello->r_offset); | |
2529 | addlo &= 0xfff; | |
2530 | ||
2531 | addend += ((insn & 0xfffff) << 20) + addlo; | |
2532 | ||
2533 | insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff); | |
2534 | bfd_putb32 (insn, contents + relhi->r_offset); | |
2535 | } | |
2536 | ||
2537 | /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit | |
2538 | inplace relocation; this function exists in order to do the | |
2539 | R_NDS32_HI20_[SU]LO relocation described above. */ | |
2540 | ||
2541 | static bfd_reloc_status_type | |
2542 | nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol, | |
2543 | void *data, asection *input_section, bfd *output_bfd, | |
2544 | char **error_message) | |
2545 | { | |
2546 | /* This part is from bfd_elf_generic_reloc. | |
2547 | If we're relocating, and this an external symbol, we don't want | |
2548 | to change anything. */ | |
2549 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2550 | && reloc_entry->addend == 0) | |
2551 | { | |
2552 | reloc_entry->address += input_section->output_offset; | |
2553 | return bfd_reloc_ok; | |
2554 | } | |
2555 | ||
2556 | if (nds32_hi20_list != NULL) | |
2557 | { | |
2558 | struct nds32_hi20 *l; | |
2559 | ||
2560 | l = nds32_hi20_list; | |
2561 | while (l != NULL) | |
2562 | { | |
2563 | unsigned long insn; | |
2564 | unsigned long val; | |
2565 | unsigned long vallo; | |
2566 | struct nds32_hi20 *next; | |
2567 | ||
2568 | /* Do the HI20 relocation. Note that we actually don't need | |
2569 | to know anything about the LO12 itself, except where to | |
2570 | find the low 12 bits of the addend needed by the LO12. */ | |
2571 | insn = bfd_getb32 (l->addr); | |
2572 | vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address); | |
2573 | vallo &= 0xfff; | |
2574 | switch (reloc_entry->howto->type) | |
2575 | { | |
2576 | case R_NDS32_LO12S3: | |
2577 | vallo <<= 3; | |
2578 | break; | |
2579 | ||
2580 | case R_NDS32_LO12S2: | |
2581 | vallo <<= 2; | |
2582 | break; | |
2583 | ||
2584 | case R_NDS32_LO12S1: | |
2585 | vallo <<= 1; | |
2586 | break; | |
2587 | ||
2588 | case R_NDS32_LO12S0: | |
2589 | vallo <<= 0; | |
2590 | break; | |
2591 | } | |
2592 | ||
2593 | val = ((insn & 0xfffff) << 12) + vallo; | |
2594 | val += l->addend; | |
2595 | ||
2596 | insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff); | |
2597 | bfd_putb32 ((bfd_vma) insn, l->addr); | |
2598 | ||
2599 | next = l->next; | |
2600 | free (l); | |
2601 | l = next; | |
2602 | } | |
2603 | ||
2604 | nds32_hi20_list = NULL; | |
2605 | } | |
2606 | ||
2607 | /* Now do the LO12 reloc in the usual way. | |
2608 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2609 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2610 | pass the handling back to bfd_install_relocation which will install | |
2611 | a section relative addend which is wrong. */ | |
2612 | return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, | |
2613 | input_section, output_bfd, error_message); | |
2614 | } | |
2615 | ||
2616 | /* Do generic partial_inplace relocation. | |
2617 | This is a local replacement for bfd_elf_generic_reloc. */ | |
2618 | ||
2619 | static bfd_reloc_status_type | |
2620 | nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry, | |
2621 | asymbol *symbol, void *data, asection *input_section, | |
2622 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2623 | { | |
2624 | bfd_reloc_status_type ret; | |
2625 | bfd_vma relocation; | |
2626 | bfd_byte *inplace_address; | |
2627 | ||
2628 | /* This part is from bfd_elf_generic_reloc. | |
2629 | If we're relocating, and this an external symbol, we don't want | |
2630 | to change anything. */ | |
2631 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2632 | && reloc_entry->addend == 0) | |
2633 | { | |
2634 | reloc_entry->address += input_section->output_offset; | |
2635 | return bfd_reloc_ok; | |
2636 | } | |
2637 | ||
2638 | /* Now do the reloc in the usual way. | |
2639 | ??? It would be nice to call bfd_elf_generic_reloc here, | |
2640 | but we have partial_inplace set. bfd_elf_generic_reloc will | |
2641 | pass the handling back to bfd_install_relocation which will install | |
2642 | a section relative addend which is wrong. */ | |
2643 | ||
2644 | /* Sanity check the address (offset in section). */ | |
2645 | if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) | |
2646 | return bfd_reloc_outofrange; | |
2647 | ||
2648 | ret = bfd_reloc_ok; | |
2649 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) | |
2650 | ret = bfd_reloc_undefined; | |
2651 | ||
2652 | if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL) | |
2653 | relocation = 0; | |
2654 | else | |
2655 | relocation = symbol->value; | |
2656 | ||
2657 | /* Only do this for a final link. */ | |
2658 | if (output_bfd == (bfd *) NULL) | |
2659 | { | |
2660 | relocation += symbol->section->output_section->vma; | |
2661 | relocation += symbol->section->output_offset; | |
2662 | } | |
2663 | ||
2664 | relocation += reloc_entry->addend; | |
2665 | switch (reloc_entry->howto->type) | |
2666 | { | |
2667 | case R_NDS32_LO12S3: | |
2668 | relocation >>= 3; | |
2669 | break; | |
2670 | ||
2671 | case R_NDS32_LO12S2: | |
2672 | relocation >>= 2; | |
2673 | break; | |
2674 | ||
2675 | case R_NDS32_LO12S1: | |
2676 | relocation >>= 1; | |
2677 | break; | |
2678 | ||
2679 | case R_NDS32_LO12S0: | |
2680 | default: | |
2681 | relocation >>= 0; | |
2682 | break; | |
2683 | } | |
2684 | ||
2685 | inplace_address = (bfd_byte *) data + reloc_entry->address; | |
2686 | ||
2687 | #define DOIT(x) \ | |
2688 | x = ((x & ~reloc_entry->howto->dst_mask) | \ | |
2689 | (((x & reloc_entry->howto->src_mask) + relocation) & \ | |
2690 | reloc_entry->howto->dst_mask)) | |
2691 | ||
2692 | switch (reloc_entry->howto->size) | |
2693 | { | |
2694 | case 1: | |
2695 | { | |
2696 | short x = bfd_getb16 (inplace_address); | |
2697 | ||
2698 | DOIT (x); | |
2699 | bfd_putb16 ((bfd_vma) x, inplace_address); | |
2700 | } | |
2701 | break; | |
2702 | case 2: | |
2703 | { | |
2704 | unsigned long x = bfd_getb32 (inplace_address); | |
2705 | ||
2706 | DOIT (x); | |
2707 | bfd_putb32 ((bfd_vma) x, inplace_address); | |
2708 | } | |
2709 | break; | |
2710 | default: | |
2711 | BFD_ASSERT (0); | |
2712 | } | |
2713 | ||
2714 | if (output_bfd != (bfd *) NULL) | |
2715 | reloc_entry->address += input_section->output_offset; | |
2716 | ||
2717 | return ret; | |
2718 | } | |
2719 | ||
2720 | /* Handle the R_NDS32_SDA15 reloc. | |
2721 | This reloc is used to compute the address of objects in the small data area | |
2722 | and to perform loads and stores from that area. | |
2723 | The lower 15 bits are sign extended and added to the register specified | |
2724 | in the instruction, which is assumed to point to _SDA_BASE_. | |
2725 | ||
2726 | Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on | |
2727 | the access size, this must be taken care of. */ | |
2728 | ||
2729 | static bfd_reloc_status_type | |
2730 | nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2731 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, | |
2732 | asection *input_section, bfd *output_bfd, | |
2733 | char **error_message ATTRIBUTE_UNUSED) | |
2734 | { | |
2735 | /* This part is from bfd_elf_generic_reloc. */ | |
2736 | if (output_bfd != (bfd *) NULL | |
2737 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
2738 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
2739 | { | |
2740 | reloc_entry->address += input_section->output_offset; | |
2741 | return bfd_reloc_ok; | |
2742 | } | |
2743 | ||
2744 | if (output_bfd != NULL) | |
2745 | { | |
2746 | /* FIXME: See bfd_perform_relocation. Is this right? */ | |
2747 | return bfd_reloc_continue; | |
2748 | } | |
2749 | ||
2750 | /* FIXME: not sure what to do here yet. But then again, the linker | |
2751 | may never call us. */ | |
2752 | abort (); | |
2753 | } | |
2754 | ||
2755 | /* nds32_elf_ignore_reloc is the special function for | |
2756 | relocation types which don't need to be relocated | |
2757 | like relaxation relocation types. | |
2758 | This function simply return bfd_reloc_ok when it is | |
2759 | invoked. */ | |
2760 | ||
2761 | static bfd_reloc_status_type | |
2762 | nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, | |
2763 | asymbol *symbol ATTRIBUTE_UNUSED, | |
2764 | void *data ATTRIBUTE_UNUSED, asection *input_section, | |
2765 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) | |
2766 | { | |
2767 | if (output_bfd != NULL) | |
2768 | reloc_entry->address += input_section->output_offset; | |
2769 | ||
2770 | return bfd_reloc_ok; | |
2771 | } | |
2772 | \f | |
2773 | ||
2774 | /* Map BFD reloc types to NDS32 ELF reloc types. */ | |
2775 | ||
2776 | struct nds32_reloc_map_entry | |
2777 | { | |
2778 | bfd_reloc_code_real_type bfd_reloc_val; | |
2779 | unsigned char elf_reloc_val; | |
2780 | }; | |
2781 | ||
2782 | static const struct nds32_reloc_map_entry nds32_reloc_map[] = | |
2783 | { | |
2784 | {BFD_RELOC_NONE, R_NDS32_NONE}, | |
2785 | {BFD_RELOC_16, R_NDS32_16_RELA}, | |
2786 | {BFD_RELOC_32, R_NDS32_32_RELA}, | |
2787 | {BFD_RELOC_NDS32_20, R_NDS32_20_RELA}, | |
2788 | {BFD_RELOC_NDS32_5, R_NDS32_5_RELA}, | |
2789 | {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA}, | |
2790 | {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA}, | |
2791 | {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA}, | |
2792 | {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA}, | |
2793 | {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA}, | |
2794 | {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA}, | |
2795 | {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA}, | |
2796 | {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA}, | |
2797 | {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA}, | |
2798 | {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA}, | |
2799 | {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA}, | |
2800 | {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA}, | |
2801 | {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA}, | |
2802 | {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA}, | |
2803 | {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA}, | |
2804 | {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA}, | |
2805 | {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT}, | |
2806 | {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY}, | |
2807 | ||
2808 | {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20}, | |
2809 | {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL}, | |
2810 | {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL}, | |
2811 | {BFD_RELOC_NDS32_COPY, R_NDS32_COPY}, | |
2812 | {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT}, | |
2813 | {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT}, | |
2814 | {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE}, | |
2815 | {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF}, | |
2816 | {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20}, | |
2817 | {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20}, | |
2818 | {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12}, | |
2819 | {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15}, | |
2820 | {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19}, | |
2821 | {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20}, | |
2822 | {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12}, | |
2823 | {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20}, | |
2824 | {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12}, | |
2825 | {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15}, | |
2826 | {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19}, | |
2827 | {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16}, | |
2828 | {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL}, | |
2829 | {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1}, | |
2830 | {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2}, | |
2831 | {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3}, | |
1c8f6a4d KLC |
2832 | {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4}, |
2833 | {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5}, | |
2834 | {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6}, | |
35c08157 KLC |
2835 | {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1}, |
2836 | {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2}, | |
2837 | {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3}, | |
1c8f6a4d KLC |
2838 | {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4}, |
2839 | {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5}, | |
2840 | {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6}, | |
2841 | {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7}, | |
35c08157 KLC |
2842 | {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE}, |
2843 | {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA}, | |
2844 | {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA}, | |
2845 | {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA}, | |
2846 | {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA}, | |
2847 | {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20}, | |
2848 | {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12}, | |
2849 | {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20}, | |
2850 | {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12}, | |
2851 | {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15}, | |
2852 | {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19}, | |
2853 | {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20}, | |
2854 | {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA}, | |
2855 | {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA}, | |
2856 | {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA}, | |
2857 | {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA}, | |
2858 | {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA}, | |
2859 | {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA}, | |
2860 | {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA}, | |
2861 | {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA}, | |
2862 | {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA}, | |
2863 | {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA}, | |
2864 | {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA}, | |
2865 | {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA}, | |
2866 | {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA}, | |
2867 | {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF}, | |
2868 | {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF}, | |
2869 | {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA}, | |
2870 | {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA}, | |
2871 | {BFD_RELOC_NDS32_PTR, R_NDS32_PTR}, | |
2872 | {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT}, | |
2873 | {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF}, | |
2874 | {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED}, | |
2875 | {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY}, | |
2876 | {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF}, | |
2877 | {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK}, | |
2878 | {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN}, | |
2879 | {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END}, | |
2880 | {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND}, | |
2881 | {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND}, | |
1c8f6a4d | 2882 | {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY}, |
35c08157 KLC |
2883 | |
2884 | {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8}, | |
2885 | {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16}, | |
2886 | {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32}, | |
2887 | {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128}, | |
2888 | {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA}, | |
2889 | {BFD_RELOC_NDS32_DATA, R_NDS32_DATA}, | |
2890 | {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN}, | |
2891 | {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA}, | |
2892 | {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA}, | |
1c8f6a4d KLC |
2893 | {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20}, |
2894 | {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12}, | |
2895 | {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD}, | |
2896 | {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS}, | |
2897 | {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20}, | |
2898 | {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2}, | |
2899 | {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF}, | |
2900 | {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20}, | |
2901 | {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0}, | |
2902 | {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1}, | |
2903 | {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2}, | |
35c08157 KLC |
2904 | }; |
2905 | ||
2906 | /* Patch tag. */ | |
2907 | ||
2908 | static reloc_howto_type * | |
2909 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2910 | const char *r_name) | |
2911 | { | |
2912 | unsigned int i; | |
2913 | ||
2914 | for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++) | |
2915 | if (nds32_elf_howto_table[i].name != NULL | |
2916 | && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0) | |
2917 | return &nds32_elf_howto_table[i]; | |
2918 | ||
2919 | for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++) | |
2920 | if (nds32_elf_relax_howto_table[i].name != NULL | |
2921 | && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0) | |
2922 | return &nds32_elf_relax_howto_table[i]; | |
2923 | ||
2924 | return NULL; | |
2925 | } | |
2926 | ||
2927 | static reloc_howto_type * | |
2928 | bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code) | |
2929 | { | |
2930 | if (code < R_NDS32_RELAX_ENTRY) | |
2931 | { | |
2932 | BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table)); | |
2933 | return &nds32_elf_howto_table[code]; | |
2934 | } | |
2935 | else | |
2936 | { | |
2937 | BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY) | |
2938 | < ARRAY_SIZE (nds32_elf_relax_howto_table)); | |
2939 | return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY]; | |
2940 | } | |
2941 | } | |
2942 | ||
2943 | static reloc_howto_type * | |
2944 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
2945 | bfd_reloc_code_real_type code) | |
2946 | { | |
2947 | unsigned int i; | |
2948 | ||
2949 | for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++) | |
2950 | { | |
2951 | if (nds32_reloc_map[i].bfd_reloc_val == code) | |
2952 | return bfd_elf32_bfd_reloc_type_table_lookup | |
2953 | (nds32_reloc_map[i].elf_reloc_val); | |
2954 | } | |
2955 | ||
2956 | return NULL; | |
2957 | } | |
2958 | ||
2959 | /* Set the howto pointer for an NDS32 ELF reloc. */ | |
2960 | ||
2961 | static void | |
2962 | nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
2963 | Elf_Internal_Rela *dst) | |
2964 | { | |
2965 | enum elf_nds32_reloc_type r_type; | |
2966 | ||
2967 | r_type = ELF32_R_TYPE (dst->r_info); | |
2968 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) <= R_NDS32_GNU_VTENTRY); | |
2969 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); | |
2970 | } | |
2971 | ||
2972 | static void | |
2973 | nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, | |
2974 | Elf_Internal_Rela *dst) | |
2975 | { | |
2976 | BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE) | |
2977 | || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY) | |
2978 | && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max))); | |
2979 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info)); | |
2980 | } | |
2981 | ||
2982 | /* Support for core dump NOTE sections. | |
2983 | Reference to include/linux/elfcore.h in Linux. */ | |
2984 | ||
2985 | static bfd_boolean | |
2986 | nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2987 | { | |
2988 | int offset; | |
2989 | size_t size; | |
2990 | ||
2991 | switch (note->descsz) | |
2992 | { | |
2993 | case 0x114: | |
2994 | /* Linux/NDS32 32-bit, ABI1 */ | |
2995 | ||
2996 | /* pr_cursig */ | |
2997 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2998 | ||
2999 | /* pr_pid */ | |
3000 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
3001 | ||
3002 | /* pr_reg */ | |
3003 | offset = 72; | |
3004 | size = 200; | |
3005 | break; | |
3006 | ||
3007 | case 0xfc: | |
3008 | /* Linux/NDS32 32-bit */ | |
3009 | ||
3010 | /* pr_cursig */ | |
3011 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
3012 | ||
3013 | /* pr_pid */ | |
3014 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); | |
3015 | ||
3016 | /* pr_reg */ | |
3017 | offset = 72; | |
3018 | size = 176; | |
3019 | break; | |
3020 | ||
3021 | default: | |
3022 | return FALSE; | |
3023 | } | |
3024 | ||
3025 | /* Make a ".reg" section. */ | |
3026 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
3027 | size, note->descpos + offset); | |
3028 | } | |
3029 | ||
3030 | static bfd_boolean | |
3031 | nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
3032 | { | |
3033 | switch (note->descsz) | |
3034 | { | |
3035 | case 124: | |
3036 | /* Linux/NDS32 */ | |
3037 | ||
3038 | /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */ | |
3039 | elf_tdata (abfd)->core->program = | |
3040 | _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); | |
3041 | elf_tdata (abfd)->core->command = | |
3042 | _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); | |
3043 | ||
3044 | default: | |
3045 | return FALSE; | |
3046 | } | |
3047 | ||
3048 | /* Note that for some reason, a spurious space is tacked | |
3049 | onto the end of the args in some (at least one anyway) | |
3050 | implementations, so strip it off if it exists. */ | |
3051 | { | |
3052 | char *command = elf_tdata (abfd)->core->command; | |
3053 | int n = strlen (command); | |
3054 | ||
3055 | if (0 < n && command[n - 1] == ' ') | |
3056 | command[n - 1] = '\0'; | |
3057 | } | |
3058 | ||
3059 | return TRUE; | |
3060 | } | |
3061 | ||
3062 | /* Hook called by the linker routine which adds symbols from an object | |
3063 | file. We must handle the special NDS32 section numbers here. | |
3064 | We also keep watching for whether we need to create the sdata special | |
3065 | linker sections. */ | |
3066 | ||
3067 | static bfd_boolean | |
3068 | nds32_elf_add_symbol_hook (bfd *abfd, | |
3069 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3070 | Elf_Internal_Sym *sym, | |
3071 | const char **namep ATTRIBUTE_UNUSED, | |
3072 | flagword *flagsp ATTRIBUTE_UNUSED, | |
3073 | asection **secp, bfd_vma *valp) | |
3074 | { | |
3075 | switch (sym->st_shndx) | |
3076 | { | |
3077 | case SHN_COMMON: | |
3078 | /* Common symbols less than the GP size are automatically | |
3079 | treated as SHN_MIPS_SCOMMON symbols. */ | |
3080 | if (sym->st_size > elf_gp_size (abfd) | |
3081 | || ELF_ST_TYPE (sym->st_info) == STT_TLS) | |
3082 | break; | |
3083 | ||
3084 | /* st_value is the alignemnt constraint. | |
3085 | That might be its actual size if it is an array or structure. */ | |
3086 | switch (sym->st_value) | |
3087 | { | |
3088 | case 1: | |
3089 | *secp = bfd_make_section_old_way (abfd, ".scommon_b"); | |
3090 | break; | |
3091 | case 2: | |
3092 | *secp = bfd_make_section_old_way (abfd, ".scommon_h"); | |
3093 | break; | |
3094 | case 4: | |
3095 | *secp = bfd_make_section_old_way (abfd, ".scommon_w"); | |
3096 | break; | |
3097 | case 8: | |
3098 | *secp = bfd_make_section_old_way (abfd, ".scommon_d"); | |
3099 | break; | |
3100 | default: | |
3101 | return TRUE; | |
3102 | } | |
3103 | ||
3104 | (*secp)->flags |= SEC_IS_COMMON; | |
3105 | *valp = sym->st_size; | |
3106 | break; | |
3107 | } | |
3108 | ||
3109 | return TRUE; | |
3110 | } | |
3111 | ||
3112 | ||
3113 | /* This function can figure out the best location for a base register to access | |
3114 | data relative to this base register | |
3115 | INPUT: | |
3116 | sda_d0: size of first DOUBLE WORD data section | |
3117 | sda_w0: size of first WORD data section | |
3118 | sda_h0: size of first HALF WORD data section | |
3119 | sda_b : size of BYTE data section | |
3120 | sda_hi: size of second HALF WORD data section | |
3121 | sda_w1: size of second WORD data section | |
3122 | sda_d1: size of second DOUBLE WORD data section | |
3123 | OUTPUT: | |
3124 | offset (always positive) from the beginning of sda_d0 if OK | |
3125 | a negative error value if fail | |
3126 | NOTE: | |
3127 | these 7 sections have to be located back to back if exist | |
3128 | a pass in 0 value for non-existing section */ | |
3129 | ||
3130 | /* Due to the interpretation of simm15 field of load/store depending on | |
3131 | data accessing size, the organization of base register relative data shall | |
3132 | like the following figure | |
3133 | ------------------------------------------- | |
3134 | | DOUBLE WORD sized data (range +/- 128K) | |
3135 | ------------------------------------------- | |
3136 | | WORD sized data (range +/- 64K) | |
3137 | ------------------------------------------- | |
3138 | | HALF WORD sized data (range +/- 32K) | |
3139 | ------------------------------------------- | |
3140 | | BYTE sized data (range +/- 16K) | |
3141 | ------------------------------------------- | |
3142 | | HALF WORD sized data (range +/- 32K) | |
3143 | ------------------------------------------- | |
3144 | | WORD sized data (range +/- 64K) | |
3145 | ------------------------------------------- | |
3146 | | DOUBLE WORD sized data (range +/- 128K) | |
3147 | ------------------------------------------- | |
3148 | Its base register shall be set to access these data freely. */ | |
3149 | ||
3150 | /* We have to figure out the SDA_BASE value, so that we can adjust the | |
3151 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output | |
3152 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
3153 | target data. We don't need to adjust the symbol value for an | |
3154 | external symbol if we are producing relocatable output. */ | |
3155 | ||
3156 | static asection *sda_rela_sec = NULL; | |
3157 | ||
1c8f6a4d | 3158 | #define SDA_SECTION_NUM 10 |
35c08157 KLC |
3159 | |
3160 | static bfd_reloc_status_type | |
3161 | nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info, | |
3162 | bfd_vma *psb, bfd_boolean add_symbol) | |
3163 | { | |
3164 | int relax_fp_as_gp; | |
3165 | struct elf_nds32_link_hash_table *table; | |
3166 | struct bfd_link_hash_entry *h, *h2; | |
1c8f6a4d | 3167 | long unsigned int total = 0; |
35c08157 KLC |
3168 | |
3169 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); | |
3170 | if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak)) | |
3171 | { | |
3172 | asection *first = NULL, *final = NULL, *temp; | |
3173 | bfd_vma sda_base; | |
3174 | /* The first section must be 4-byte aligned to promise _SDA_BASE_ being | |
3175 | 4 byte-aligned. Therefore, it has to set the first section ".data" | |
3176 | 4 byte-aligned. */ | |
3177 | static const char sec_name[SDA_SECTION_NUM][10] = | |
3178 | { | |
3179 | ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b", | |
1c8f6a4d | 3180 | ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d" |
35c08157 KLC |
3181 | }; |
3182 | size_t i = 0; | |
3183 | ||
3184 | if (output_bfd->sections == NULL) | |
3185 | { | |
3186 | *psb = elf_gp (output_bfd); | |
3187 | return bfd_reloc_ok; | |
3188 | } | |
3189 | ||
3190 | /* Get the first and final section. */ | |
1c8f6a4d | 3191 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3192 | { |
3193 | temp = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3194 | if (temp && !first && (temp->size != 0 || temp->rawsize != 0)) | |
3195 | first = temp; | |
3196 | if (temp && (temp->size != 0 || temp->rawsize != 0)) | |
3197 | final = temp; | |
1c8f6a4d KLC |
3198 | |
3199 | /* Summarize the sections in order to check if joining .bss. */ | |
3200 | if (temp && temp->size != 0) | |
3201 | total += temp->size; | |
3202 | else if (temp && temp->rawsize != 0) | |
3203 | total += temp->rawsize; | |
3204 | ||
35c08157 KLC |
3205 | i++; |
3206 | } | |
3207 | ||
1c8f6a4d KLC |
3208 | /* Check .bss size. */ |
3209 | temp = bfd_get_section_by_name (output_bfd, ".bss"); | |
3210 | if (temp) | |
3211 | { | |
3212 | if (temp->size != 0) | |
3213 | total += temp->size; | |
3214 | else if (temp->rawsize != 0) | |
3215 | total += temp->rawsize; | |
3216 | ||
3217 | if (total < 0x80000) | |
3218 | { | |
3219 | if (!first && (temp->size != 0 || temp->rawsize != 0)) | |
3220 | first = temp; | |
3221 | if ((temp->size != 0 || temp->rawsize != 0)) | |
3222 | final = temp; | |
3223 | } | |
3224 | } | |
3225 | ||
35c08157 KLC |
3226 | if (first && final) |
3227 | { | |
3228 | /* The middle of data region. */ | |
1c8f6a4d | 3229 | sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2; |
35c08157 KLC |
3230 | |
3231 | /* Find the section sda_base located. */ | |
3232 | i = 0; | |
1c8f6a4d | 3233 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
35c08157 KLC |
3234 | { |
3235 | final = bfd_get_section_by_name (output_bfd, sec_name[i]); | |
3236 | if (final && (final->size != 0 || final->rawsize != 0) | |
3237 | && sda_base >= final->vma) | |
3238 | { | |
3239 | first = final; | |
3240 | i++; | |
3241 | } | |
3242 | else | |
3243 | break; | |
3244 | } | |
3245 | } | |
3246 | else | |
3247 | { | |
3248 | /* There is not any data section in output bfd, and set _SDA_BASE_ in | |
3249 | first output section. */ | |
3250 | first = output_bfd->sections; | |
3251 | while (first && first->size == 0 && first->rawsize == 0) | |
3252 | first = first->next; | |
3253 | if (!first) | |
3254 | { | |
3255 | *psb = elf_gp (output_bfd); | |
3256 | return bfd_reloc_ok; | |
3257 | } | |
1c8f6a4d | 3258 | sda_base = first->vma + first->rawsize; |
35c08157 KLC |
3259 | } |
3260 | ||
3261 | sda_base -= first->vma; | |
3262 | sda_base = sda_base & (~7); | |
3263 | ||
3264 | if (!_bfd_generic_link_add_one_symbol | |
3265 | (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first, | |
3266 | (bfd_vma) sda_base, (const char *) NULL, FALSE, | |
3267 | get_elf_backend_data (output_bfd)->collect, &h)) | |
3268 | return FALSE; | |
3269 | ||
3270 | sda_rela_sec = first; | |
3271 | ||
3272 | table = nds32_elf_hash_table (info); | |
3273 | relax_fp_as_gp = table->relax_fp_as_gp; | |
3274 | if (relax_fp_as_gp) | |
3275 | { | |
3276 | h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME, | |
3277 | FALSE, FALSE, FALSE); | |
3278 | /* Define a weak FP_BASE_NAME here to prevent the undefined symbol. | |
3279 | And set FP equal to SDA_BASE to do relaxation for | |
3280 | la $fp, _FP_BASE_. */ | |
3281 | if (!_bfd_generic_link_add_one_symbol | |
3282 | (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK, | |
3283 | first, (bfd_vma) sda_base, (const char *) NULL, | |
3284 | FALSE, get_elf_backend_data (output_bfd)->collect, &h2)) | |
3285 | return FALSE; | |
3286 | } | |
3287 | } | |
3288 | ||
3289 | if (add_symbol == TRUE) | |
3290 | { | |
3291 | if (h) | |
3292 | { | |
3293 | /* Now set gp. */ | |
3294 | elf_gp (output_bfd) = (h->u.def.value | |
3295 | + h->u.def.section->output_section->vma | |
3296 | + h->u.def.section->output_offset); | |
3297 | } | |
3298 | else | |
3299 | { | |
3300 | (*_bfd_error_handler) (_("error: Can't find symbol: _SDA_BASE_.")); | |
3301 | return bfd_reloc_dangerous; | |
3302 | } | |
3303 | } | |
3304 | ||
3305 | *psb = h->u.def.value + h->u.def.section->output_section->vma | |
3306 | + h->u.def.section->output_offset; | |
3307 | return bfd_reloc_ok; | |
3308 | } | |
3309 | \f | |
3310 | ||
3311 | /* Return size of a PLT entry. */ | |
3312 | #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE | |
3313 | ||
3314 | ||
3315 | /* Create an entry in an nds32 ELF linker hash table. */ | |
3316 | ||
3317 | static struct bfd_hash_entry * | |
3318 | nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
3319 | struct bfd_hash_table *table, | |
3320 | const char *string) | |
3321 | { | |
3322 | struct elf_nds32_link_hash_entry *ret; | |
3323 | ||
3324 | ret = (struct elf_nds32_link_hash_entry *) entry; | |
3325 | ||
3326 | /* Allocate the structure if it has not already been allocated by a | |
3327 | subclass. */ | |
3328 | if (ret == NULL) | |
3329 | ret = (struct elf_nds32_link_hash_entry *) | |
3330 | bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry)); | |
3331 | ||
3332 | if (ret == NULL) | |
3333 | return (struct bfd_hash_entry *) ret; | |
3334 | ||
3335 | /* Call the allocation method of the superclass. */ | |
3336 | ret = (struct elf_nds32_link_hash_entry *) | |
3337 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); | |
3338 | ||
3339 | if (ret != NULL) | |
3340 | { | |
3341 | struct elf_nds32_link_hash_entry *eh; | |
3342 | ||
3343 | eh = (struct elf_nds32_link_hash_entry *) ret; | |
3344 | eh->dyn_relocs = NULL; | |
1c8f6a4d | 3345 | eh->tls_type = GOT_UNKNOWN; |
35c08157 KLC |
3346 | } |
3347 | ||
3348 | return (struct bfd_hash_entry *) ret; | |
3349 | } | |
3350 | ||
3351 | /* Create an nds32 ELF linker hash table. */ | |
3352 | ||
3353 | static struct bfd_link_hash_table * | |
3354 | nds32_elf_link_hash_table_create (bfd *abfd) | |
3355 | { | |
3356 | struct elf_nds32_link_hash_table *ret; | |
3357 | ||
3358 | bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table); | |
3359 | ||
3360 | ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt); | |
3361 | if (ret == NULL) | |
3362 | return NULL; | |
3363 | ||
3364 | /* patch tag. */ | |
3365 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
3366 | nds32_elf_link_hash_newfunc, | |
3367 | sizeof (struct elf_nds32_link_hash_entry), | |
3368 | NDS32_ELF_DATA)) | |
3369 | { | |
3370 | free (ret); | |
3371 | return NULL; | |
3372 | } | |
3373 | ||
3374 | ret->sgot = NULL; | |
3375 | ret->sgotplt = NULL; | |
3376 | ret->srelgot = NULL; | |
3377 | ret->splt = NULL; | |
3378 | ret->srelplt = NULL; | |
3379 | ret->sdynbss = NULL; | |
3380 | ret->srelbss = NULL; | |
3381 | ret->sym_ld_script = NULL; | |
3382 | ret->ex9_export_file = NULL; | |
3383 | ret->ex9_import_file = NULL; | |
3384 | ||
3385 | return &ret->root.root; | |
3386 | } | |
3387 | ||
3388 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
3389 | shortcuts to them in our hash table. */ | |
3390 | ||
3391 | static bfd_boolean | |
3392 | create_got_section (bfd *dynobj, struct bfd_link_info *info) | |
3393 | { | |
3394 | struct elf_nds32_link_hash_table *htab; | |
3395 | ||
3396 | if (!_bfd_elf_create_got_section (dynobj, info)) | |
3397 | return FALSE; | |
3398 | ||
3399 | htab = nds32_elf_hash_table (info); | |
3400 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); | |
3401 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); | |
3402 | if (!htab->sgot || !htab->sgotplt) | |
3403 | abort (); | |
3404 | ||
3405 | /* _bfd_elf_create_got_section will create it for us. */ | |
3406 | htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
3407 | if (htab->srelgot == NULL | |
3408 | || !bfd_set_section_flags (dynobj, htab->srelgot, | |
3409 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | |
3410 | | SEC_IN_MEMORY | SEC_LINKER_CREATED | |
3411 | | SEC_READONLY)) | |
3412 | || !bfd_set_section_alignment (dynobj, htab->srelgot, 2)) | |
3413 | return FALSE; | |
3414 | ||
3415 | return TRUE; | |
3416 | } | |
3417 | ||
3418 | /* Create dynamic sections when linking against a dynamic object. */ | |
3419 | ||
3420 | static bfd_boolean | |
3421 | nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
3422 | { | |
3423 | struct elf_nds32_link_hash_table *htab; | |
3424 | flagword flags, pltflags; | |
3425 | register asection *s; | |
3426 | const struct elf_backend_data *bed; | |
3427 | int ptralign = 2; /* 32-bit */ | |
3428 | ||
3429 | bed = get_elf_backend_data (abfd); | |
3430 | ||
3431 | htab = nds32_elf_hash_table (info); | |
3432 | ||
3433 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
3434 | .rel[a].bss sections. */ | |
3435 | ||
3436 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
3437 | | SEC_LINKER_CREATED); | |
3438 | ||
3439 | pltflags = flags; | |
3440 | pltflags |= SEC_CODE; | |
3441 | if (bed->plt_not_loaded) | |
3442 | pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS); | |
3443 | if (bed->plt_readonly) | |
3444 | pltflags |= SEC_READONLY; | |
3445 | ||
3446 | s = bfd_make_section (abfd, ".plt"); | |
3447 | htab->splt = s; | |
3448 | if (s == NULL | |
3449 | || !bfd_set_section_flags (abfd, s, pltflags) | |
3450 | || !bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
3451 | return FALSE; | |
3452 | ||
3453 | if (bed->want_plt_sym) | |
3454 | { | |
3455 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
3456 | .plt section. */ | |
3457 | struct bfd_link_hash_entry *bh = NULL; | |
3458 | struct elf_link_hash_entry *h; | |
3459 | ||
3460 | if (!(_bfd_generic_link_add_one_symbol | |
3461 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
3462 | (bfd_vma) 0, (const char *) NULL, FALSE, | |
3463 | get_elf_backend_data (abfd)->collect, &bh))) | |
3464 | return FALSE; | |
3465 | ||
3466 | h = (struct elf_link_hash_entry *) bh; | |
3467 | h->def_regular = 1; | |
3468 | h->type = STT_OBJECT; | |
3469 | ||
3470 | if (info->shared && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
3471 | return FALSE; | |
3472 | } | |
3473 | ||
3474 | s = bfd_make_section (abfd, | |
3475 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); | |
3476 | htab->srelplt = s; | |
3477 | if (s == NULL | |
3478 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3479 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3480 | return FALSE; | |
3481 | ||
3482 | if (htab->sgot == NULL && !create_got_section (abfd, info)) | |
3483 | return FALSE; | |
3484 | ||
3485 | { | |
3486 | const char *secname; | |
3487 | char *relname; | |
3488 | flagword secflags; | |
3489 | asection *sec; | |
3490 | ||
3491 | for (sec = abfd->sections; sec; sec = sec->next) | |
3492 | { | |
3493 | secflags = bfd_get_section_flags (abfd, sec); | |
3494 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) | |
3495 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) | |
3496 | continue; | |
3497 | secname = bfd_get_section_name (abfd, sec); | |
3498 | relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); | |
3499 | strcpy (relname, ".rela"); | |
3500 | strcat (relname, secname); | |
3501 | if (bfd_get_section_by_name (abfd, secname)) | |
3502 | continue; | |
3503 | s = bfd_make_section (abfd, relname); | |
3504 | if (s == NULL | |
3505 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3506 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3507 | return FALSE; | |
3508 | } | |
3509 | } | |
3510 | ||
3511 | if (bed->want_dynbss) | |
3512 | { | |
3513 | /* The .dynbss section is a place to put symbols which are defined | |
3514 | by dynamic objects, are referenced by regular objects, and are | |
3515 | not functions. We must allocate space for them in the process | |
3516 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
3517 | initialize them at run time. The linker script puts the .dynbss | |
3518 | section into the .bss section of the final image. */ | |
3519 | s = bfd_make_section (abfd, ".dynbss"); | |
3520 | htab->sdynbss = s; | |
3521 | if (s == NULL | |
3522 | || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) | |
3523 | return FALSE; | |
3524 | /* The .rel[a].bss section holds copy relocs. This section is not | |
3525 | normally needed. We need to create it here, though, so that the | |
3526 | linker will map it to an output section. We can't just create it | |
3527 | only if we need it, because we will not know whether we need it | |
3528 | until we have seen all the input files, and the first time the | |
3529 | main linker code calls BFD after examining all the input files | |
3530 | (size_dynamic_sections) the input sections have already been | |
3531 | mapped to the output sections. If the section turns out not to | |
3532 | be needed, we can discard it later. We will never need this | |
3533 | section when generating a shared object, since they do not use | |
3534 | copy relocs. */ | |
3535 | if (!info->shared) | |
3536 | { | |
3537 | s = bfd_make_section (abfd, (bed->default_use_rela_p | |
3538 | ? ".rela.bss" : ".rel.bss")); | |
3539 | htab->srelbss = s; | |
3540 | if (s == NULL | |
3541 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) | |
3542 | || !bfd_set_section_alignment (abfd, s, ptralign)) | |
3543 | return FALSE; | |
3544 | } | |
3545 | } | |
3546 | ||
3547 | return TRUE; | |
3548 | } | |
3549 | ||
3550 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
3551 | static void | |
3552 | nds32_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
3553 | struct elf_link_hash_entry *dir, | |
3554 | struct elf_link_hash_entry *ind) | |
3555 | { | |
3556 | struct elf_nds32_link_hash_entry *edir, *eind; | |
3557 | ||
3558 | edir = (struct elf_nds32_link_hash_entry *) dir; | |
3559 | eind = (struct elf_nds32_link_hash_entry *) ind; | |
3560 | ||
3561 | if (eind->dyn_relocs != NULL) | |
3562 | { | |
3563 | if (edir->dyn_relocs != NULL) | |
3564 | { | |
3565 | struct elf_nds32_dyn_relocs **pp; | |
3566 | struct elf_nds32_dyn_relocs *p; | |
3567 | ||
3568 | if (ind->root.type == bfd_link_hash_indirect) | |
3569 | abort (); | |
3570 | ||
3571 | /* Add reloc counts against the weak sym to the strong sym | |
3572 | list. Merge any entries against the same section. */ | |
3573 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
3574 | { | |
3575 | struct elf_nds32_dyn_relocs *q; | |
3576 | ||
3577 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3578 | if (q->sec == p->sec) | |
3579 | { | |
3580 | q->pc_count += p->pc_count; | |
3581 | q->count += p->count; | |
3582 | *pp = p->next; | |
3583 | break; | |
3584 | } | |
3585 | if (q == NULL) | |
3586 | pp = &p->next; | |
3587 | } | |
3588 | *pp = edir->dyn_relocs; | |
3589 | } | |
3590 | ||
3591 | edir->dyn_relocs = eind->dyn_relocs; | |
3592 | eind->dyn_relocs = NULL; | |
3593 | } | |
3594 | ||
3595 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3596 | } | |
3597 | \f | |
3598 | ||
3599 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3600 | regular object. The current definition is in some section of the | |
3601 | dynamic object, but we're not including those sections. We have to | |
3602 | change the definition to something the rest of the link can | |
3603 | understand. */ | |
3604 | ||
3605 | static bfd_boolean | |
3606 | nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
3607 | struct elf_link_hash_entry *h) | |
3608 | { | |
3609 | struct elf_nds32_link_hash_table *htab; | |
3610 | struct elf_nds32_link_hash_entry *eh; | |
3611 | struct elf_nds32_dyn_relocs *p; | |
3612 | bfd *dynobj; | |
3613 | asection *s; | |
3614 | unsigned int power_of_two; | |
3615 | ||
3616 | dynobj = elf_hash_table (info)->dynobj; | |
3617 | ||
3618 | /* Make sure we know what is going on here. */ | |
3619 | BFD_ASSERT (dynobj != NULL | |
3620 | && (h->needs_plt | |
3621 | || h->u.weakdef != NULL | |
3622 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); | |
3623 | ||
3624 | ||
3625 | /* If this is a function, put it in the procedure linkage table. We | |
3626 | will fill in the contents of the procedure linkage table later, | |
3627 | when we know the address of the .got section. */ | |
3628 | if (h->type == STT_FUNC || h->needs_plt) | |
3629 | { | |
3630 | if (!info->shared | |
3631 | && !h->def_dynamic | |
3632 | && !h->ref_dynamic | |
3633 | && h->root.type != bfd_link_hash_undefweak | |
3634 | && h->root.type != bfd_link_hash_undefined) | |
3635 | { | |
3636 | /* This case can occur if we saw a PLT reloc in an input | |
3637 | file, but the symbol was never referred to by a dynamic | |
3638 | object. In such a case, we don't actually need to build | |
3639 | a procedure linkage table, and we can just do a PCREL | |
3640 | reloc instead. */ | |
3641 | h->plt.offset = (bfd_vma) - 1; | |
3642 | h->needs_plt = 0; | |
3643 | } | |
3644 | ||
3645 | return TRUE; | |
3646 | } | |
3647 | else | |
3648 | h->plt.offset = (bfd_vma) - 1; | |
3649 | ||
3650 | /* If this is a weak symbol, and there is a real definition, the | |
3651 | processor independent code will have arranged for us to see the | |
3652 | real definition first, and we can just use the same value. */ | |
3653 | if (h->u.weakdef != NULL) | |
3654 | { | |
3655 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
3656 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
3657 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
3658 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
3659 | return TRUE; | |
3660 | } | |
3661 | ||
3662 | /* This is a reference to a symbol defined by a dynamic object which | |
3663 | is not a function. */ | |
3664 | ||
3665 | /* If we are creating a shared library, we must presume that the | |
3666 | only references to the symbol are via the global offset table. | |
3667 | For such cases we need not do anything here; the relocations will | |
3668 | be handled correctly by relocate_section. */ | |
3669 | if (info->shared) | |
3670 | return TRUE; | |
3671 | ||
3672 | /* If there are no references to this symbol that do not use the | |
3673 | GOT, we don't need to generate a copy reloc. */ | |
3674 | if (!h->non_got_ref) | |
3675 | return TRUE; | |
3676 | ||
3677 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
3678 | if (info->nocopyreloc) | |
3679 | { | |
3680 | h->non_got_ref = 0; | |
3681 | return TRUE; | |
3682 | } | |
3683 | ||
3684 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3685 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3686 | { | |
3687 | s = p->sec->output_section; | |
3688 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) | |
3689 | break; | |
3690 | } | |
3691 | ||
3692 | /* If we didn't find any dynamic relocs in sections which needs the | |
3693 | copy reloc, then we'll be keeping the dynamic relocs and avoiding | |
3694 | the copy reloc. */ | |
3695 | if (p == NULL) | |
3696 | { | |
3697 | h->non_got_ref = 0; | |
3698 | return TRUE; | |
3699 | } | |
3700 | ||
3701 | /* We must allocate the symbol in our .dynbss section, which will | |
3702 | become part of the .bss section of the executable. There will be | |
3703 | an entry for this symbol in the .dynsym section. The dynamic | |
3704 | object will contain position independent code, so all references | |
3705 | from the dynamic object to this symbol will go through the global | |
3706 | offset table. The dynamic linker will use the .dynsym entry to | |
3707 | determine the address it must put in the global offset table, so | |
3708 | both the dynamic object and the regular object will refer to the | |
3709 | same memory location for the variable. */ | |
3710 | ||
3711 | htab = nds32_elf_hash_table (info); | |
3712 | s = htab->sdynbss; | |
3713 | BFD_ASSERT (s != NULL); | |
3714 | ||
3715 | /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker | |
3716 | to copy the initial value out of the dynamic object and into the | |
3717 | runtime process image. We need to remember the offset into the | |
3718 | .rela.bss section we are going to use. */ | |
3719 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
3720 | { | |
3721 | asection *srel; | |
3722 | ||
3723 | srel = htab->srelbss; | |
3724 | BFD_ASSERT (srel != NULL); | |
3725 | srel->size += sizeof (Elf32_External_Rela); | |
3726 | h->needs_copy = 1; | |
3727 | } | |
3728 | ||
3729 | /* We need to figure out the alignment required for this symbol. I | |
3730 | have no idea how ELF linkers handle this. */ | |
3731 | power_of_two = bfd_log2 (h->size); | |
3732 | if (power_of_two > 3) | |
3733 | power_of_two = 3; | |
3734 | ||
3735 | /* Apply the required alignment. */ | |
3736 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); | |
3737 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) | |
3738 | { | |
3739 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) | |
3740 | return FALSE; | |
3741 | } | |
3742 | ||
3743 | /* Define the symbol as being at this point in the section. */ | |
3744 | h->root.u.def.section = s; | |
3745 | h->root.u.def.value = s->size; | |
3746 | ||
3747 | /* Increment the section size to make room for the symbol. */ | |
3748 | s->size += h->size; | |
3749 | ||
3750 | return TRUE; | |
3751 | } | |
3752 | ||
3753 | /* Allocate space in .plt, .got and associated reloc sections for | |
3754 | dynamic relocs. */ | |
3755 | ||
3756 | static bfd_boolean | |
3757 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3758 | { | |
3759 | struct bfd_link_info *info; | |
3760 | struct elf_nds32_link_hash_table *htab; | |
3761 | struct elf_nds32_link_hash_entry *eh; | |
3762 | struct elf_nds32_dyn_relocs *p; | |
3763 | ||
3764 | if (h->root.type == bfd_link_hash_indirect) | |
3765 | return TRUE; | |
3766 | ||
3767 | if (h->root.type == bfd_link_hash_warning) | |
3768 | /* When warning symbols are created, they **replace** the "real" | |
3769 | entry in the hash table, thus we never get to see the real | |
3770 | symbol in a hash traversal. So look at it now. */ | |
3771 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3772 | ||
3773 | info = (struct bfd_link_info *) inf; | |
3774 | htab = nds32_elf_hash_table (info); | |
3775 | ||
3776 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3777 | ||
3778 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
3779 | { | |
3780 | /* Make sure this symbol is output as a dynamic symbol. | |
3781 | Undefined weak syms won't yet be marked as dynamic. */ | |
3782 | if (h->dynindx == -1 && !h->forced_local) | |
3783 | { | |
3784 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3785 | return FALSE; | |
3786 | } | |
3787 | ||
3788 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
3789 | { | |
3790 | asection *s = htab->splt; | |
3791 | ||
3792 | /* If this is the first .plt entry, make room for the special | |
3793 | first entry. */ | |
3794 | if (s->size == 0) | |
3795 | s->size += PLT_ENTRY_SIZE; | |
3796 | ||
3797 | h->plt.offset = s->size; | |
3798 | ||
3799 | /* If this symbol is not defined in a regular file, and we are | |
3800 | not generating a shared library, then set the symbol to this | |
3801 | location in the .plt. This is required to make function | |
3802 | pointers compare as equal between the normal executable and | |
3803 | the shared library. */ | |
3804 | if (!info->shared && !h->def_regular) | |
3805 | { | |
3806 | h->root.u.def.section = s; | |
3807 | h->root.u.def.value = h->plt.offset; | |
3808 | } | |
3809 | ||
3810 | /* Make room for this entry. */ | |
3811 | s->size += PLT_ENTRY_SIZE; | |
3812 | ||
3813 | /* We also need to make an entry in the .got.plt section, which | |
3814 | will be placed in the .got section by the linker script. */ | |
3815 | htab->sgotplt->size += 4; | |
3816 | ||
3817 | /* We also need to make an entry in the .rel.plt section. */ | |
3818 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
3819 | } | |
3820 | else | |
3821 | { | |
3822 | h->plt.offset = (bfd_vma) - 1; | |
3823 | h->needs_plt = 0; | |
3824 | } | |
3825 | } | |
3826 | else | |
3827 | { | |
3828 | h->plt.offset = (bfd_vma) - 1; | |
3829 | h->needs_plt = 0; | |
3830 | } | |
3831 | ||
3832 | if (h->got.refcount > 0) | |
3833 | { | |
3834 | asection *s; | |
3835 | bfd_boolean dyn; | |
1c8f6a4d | 3836 | int tls_type = elf32_nds32_hash_entry (h)->tls_type; |
35c08157 KLC |
3837 | |
3838 | /* Make sure this symbol is output as a dynamic symbol. | |
3839 | Undefined weak syms won't yet be marked as dynamic. */ | |
3840 | if (h->dynindx == -1 && !h->forced_local) | |
3841 | { | |
3842 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3843 | return FALSE; | |
3844 | } | |
3845 | ||
3846 | s = htab->sgot; | |
35c08157 | 3847 | h->got.offset = s->size; |
1c8f6a4d KLC |
3848 | |
3849 | if (tls_type == GOT_UNKNOWN) | |
3850 | abort (); | |
3851 | else if (tls_type == GOT_NORMAL | |
3852 | || tls_type == GOT_TLS_IE) | |
3853 | /* Need a GOT slot. */ | |
3854 | s->size += 4; | |
3855 | ||
35c08157 KLC |
3856 | dyn = htab->root.dynamic_sections_created; |
3857 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) | |
3858 | htab->srelgot->size += sizeof (Elf32_External_Rela); | |
3859 | } | |
3860 | else | |
3861 | h->got.offset = (bfd_vma) - 1; | |
3862 | ||
3863 | if (eh->dyn_relocs == NULL) | |
3864 | return TRUE; | |
3865 | ||
3866 | /* In the shared -Bsymbolic case, discard space allocated for | |
3867 | dynamic pc-relative relocs against symbols which turn out to be | |
3868 | defined in regular objects. For the normal shared case, discard | |
3869 | space for pc-relative relocs that have become local due to symbol | |
3870 | visibility changes. */ | |
3871 | ||
3872 | if (info->shared) | |
3873 | { | |
3874 | if (h->def_regular && (h->forced_local || info->symbolic)) | |
3875 | { | |
3876 | struct elf_nds32_dyn_relocs **pp; | |
3877 | ||
3878 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
3879 | { | |
3880 | p->count -= p->pc_count; | |
3881 | p->pc_count = 0; | |
3882 | if (p->count == 0) | |
3883 | *pp = p->next; | |
3884 | else | |
3885 | pp = &p->next; | |
3886 | } | |
3887 | } | |
3888 | } | |
3889 | else | |
3890 | { | |
3891 | /* For the non-shared case, discard space for relocs against | |
3892 | symbols which turn out to need copy relocs or are not dynamic. */ | |
3893 | ||
3894 | if (!h->non_got_ref | |
3895 | && ((h->def_dynamic | |
3896 | && !h->def_regular) | |
3897 | || (htab->root.dynamic_sections_created | |
3898 | && (h->root.type == bfd_link_hash_undefweak | |
3899 | || h->root.type == bfd_link_hash_undefined)))) | |
3900 | { | |
3901 | /* Make sure this symbol is output as a dynamic symbol. | |
3902 | Undefined weak syms won't yet be marked as dynamic. */ | |
3903 | if (h->dynindx == -1 && !h->forced_local) | |
3904 | { | |
3905 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3906 | return FALSE; | |
3907 | } | |
3908 | ||
3909 | /* If that succeeded, we know we'll be keeping all the | |
3910 | relocs. */ | |
3911 | if (h->dynindx != -1) | |
3912 | goto keep; | |
3913 | } | |
3914 | ||
3915 | eh->dyn_relocs = NULL; | |
3916 | ||
3917 | keep:; | |
3918 | } | |
3919 | ||
3920 | /* Finally, allocate space. */ | |
3921 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3922 | { | |
3923 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
3924 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
3925 | } | |
3926 | ||
3927 | return TRUE; | |
3928 | } | |
3929 | ||
3930 | /* Find any dynamic relocs that apply to read-only sections. */ | |
3931 | ||
3932 | static bfd_boolean | |
3933 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3934 | { | |
3935 | struct elf_nds32_link_hash_entry *eh; | |
3936 | struct elf_nds32_dyn_relocs *p; | |
3937 | ||
3938 | if (h->root.type == bfd_link_hash_warning) | |
3939 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3940 | ||
3941 | eh = (struct elf_nds32_link_hash_entry *) h; | |
3942 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
3943 | { | |
3944 | asection *s = p->sec->output_section; | |
3945 | ||
3946 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
3947 | { | |
3948 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3949 | ||
3950 | info->flags |= DF_TEXTREL; | |
3951 | ||
3952 | /* Not an error, just cut short the traversal. */ | |
3953 | return FALSE; | |
3954 | } | |
3955 | } | |
3956 | return TRUE; | |
3957 | } | |
3958 | ||
3959 | /* Set the sizes of the dynamic sections. */ | |
3960 | ||
3961 | static bfd_boolean | |
3962 | nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
3963 | struct bfd_link_info *info) | |
3964 | { | |
3965 | struct elf_nds32_link_hash_table *htab; | |
3966 | bfd *dynobj; | |
3967 | asection *s; | |
3968 | bfd_boolean relocs; | |
3969 | bfd *ibfd; | |
3970 | ||
3971 | htab = nds32_elf_hash_table (info); | |
3972 | dynobj = htab->root.dynobj; | |
3973 | BFD_ASSERT (dynobj != NULL); | |
3974 | ||
3975 | if (htab->root.dynamic_sections_created) | |
3976 | { | |
3977 | /* Set the contents of the .interp section to the interpreter. */ | |
3978 | if (!info->shared) | |
3979 | { | |
3980 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
3981 | BFD_ASSERT (s != NULL); | |
3982 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
3983 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
3984 | } | |
3985 | } | |
3986 | ||
3987 | /* Set up .got offsets for local syms, and space for local dynamic | |
3988 | relocs. */ | |
c72f2fb2 | 3989 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
35c08157 KLC |
3990 | { |
3991 | bfd_signed_vma *local_got; | |
3992 | bfd_signed_vma *end_local_got; | |
3993 | bfd_size_type locsymcount; | |
3994 | Elf_Internal_Shdr *symtab_hdr; | |
3995 | asection *srel; | |
3996 | ||
3997 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
3998 | continue; | |
3999 | ||
4000 | for (s = ibfd->sections; s != NULL; s = s->next) | |
4001 | { | |
4002 | struct elf_nds32_dyn_relocs *p; | |
4003 | ||
4004 | for (p = ((struct elf_nds32_dyn_relocs *) | |
4005 | elf_section_data (s)->local_dynrel); | |
4006 | p != NULL; p = p->next) | |
4007 | { | |
4008 | if (!bfd_is_abs_section (p->sec) | |
4009 | && bfd_is_abs_section (p->sec->output_section)) | |
4010 | { | |
4011 | /* Input section has been discarded, either because | |
4012 | it is a copy of a linkonce section or due to | |
4013 | linker script /DISCARD/, so we'll be discarding | |
4014 | the relocs too. */ | |
4015 | } | |
4016 | else if (p->count != 0) | |
4017 | { | |
4018 | srel = elf_section_data (p->sec)->sreloc; | |
4019 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
4020 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
4021 | info->flags |= DF_TEXTREL; | |
4022 | } | |
4023 | } | |
4024 | } | |
4025 | ||
4026 | local_got = elf_local_got_refcounts (ibfd); | |
4027 | if (!local_got) | |
4028 | continue; | |
4029 | ||
4030 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
4031 | locsymcount = symtab_hdr->sh_info; | |
4032 | end_local_got = local_got + locsymcount; | |
4033 | s = htab->sgot; | |
4034 | srel = htab->srelgot; | |
4035 | for (; local_got < end_local_got; ++local_got) | |
4036 | { | |
4037 | if (*local_got > 0) | |
4038 | { | |
4039 | *local_got = s->size; | |
4040 | s->size += 4; | |
4041 | if (info->shared) | |
4042 | srel->size += sizeof (Elf32_External_Rela); | |
4043 | } | |
4044 | else | |
4045 | *local_got = (bfd_vma) - 1; | |
4046 | } | |
4047 | } | |
4048 | ||
4049 | /* Allocate global sym .plt and .got entries, and space for global | |
4050 | sym dynamic relocs. */ | |
4051 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info); | |
4052 | ||
4053 | /* We now have determined the sizes of the various dynamic sections. | |
4054 | Allocate memory for them. */ | |
4055 | relocs = FALSE; | |
4056 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4057 | { | |
4058 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4059 | continue; | |
4060 | ||
4061 | if (s == htab->splt) | |
4062 | { | |
4063 | /* Strip this section if we don't need it; see the | |
4064 | comment below. */ | |
4065 | } | |
4066 | else if (s == htab->sgot) | |
4067 | { | |
4068 | got_size += s->size; | |
4069 | } | |
4070 | else if (s == htab->sgotplt) | |
4071 | { | |
4072 | got_size += s->size; | |
4073 | } | |
4074 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) | |
4075 | { | |
4076 | if (s->size != 0 && s != htab->srelplt) | |
4077 | relocs = TRUE; | |
4078 | ||
4079 | /* We use the reloc_count field as a counter if we need | |
4080 | to copy relocs into the output file. */ | |
4081 | s->reloc_count = 0; | |
4082 | } | |
4083 | else | |
4084 | { | |
4085 | /* It's not one of our sections, so don't allocate space. */ | |
4086 | continue; | |
4087 | } | |
4088 | ||
4089 | if (s->size == 0) | |
4090 | { | |
4091 | /* If we don't need this section, strip it from the | |
4092 | output file. This is mostly to handle .rela.bss and | |
4093 | .rela.plt. We must create both sections in | |
4094 | create_dynamic_sections, because they must be created | |
4095 | before the linker maps input sections to output | |
4096 | sections. The linker does that before | |
4097 | adjust_dynamic_symbol is called, and it is that | |
4098 | function which decides whether anything needs to go | |
4099 | into these sections. */ | |
4100 | s->flags |= SEC_EXCLUDE; | |
4101 | continue; | |
4102 | } | |
4103 | ||
4104 | /* Allocate memory for the section contents. We use bfd_zalloc | |
4105 | here in case unused entries are not reclaimed before the | |
4106 | section's contents are written out. This should not happen, | |
4107 | but this way if it does, we get a R_NDS32_NONE reloc instead | |
4108 | of garbage. */ | |
4109 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
4110 | if (s->contents == NULL) | |
4111 | return FALSE; | |
4112 | } | |
4113 | ||
4114 | ||
4115 | if (htab->root.dynamic_sections_created) | |
4116 | { | |
4117 | /* Add some entries to the .dynamic section. We fill in the | |
4118 | values later, in nds32_elf_finish_dynamic_sections, but we | |
4119 | must add the entries now so that we get the correct size for | |
4120 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4121 | dynamic linker and used by the debugger. */ | |
4122 | #define add_dynamic_entry(TAG, VAL) \ | |
4123 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
4124 | ||
4125 | if (!info->shared) | |
4126 | { | |
4127 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
4128 | return FALSE; | |
4129 | } | |
4130 | ||
4131 | if (htab->splt->size != 0) | |
4132 | { | |
4133 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
4134 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4135 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4136 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4137 | return FALSE; | |
4138 | } | |
4139 | ||
4140 | if (relocs) | |
4141 | { | |
4142 | if (!add_dynamic_entry (DT_RELA, 0) | |
4143 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4144 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) | |
4145 | return FALSE; | |
4146 | ||
4147 | /* If any dynamic relocs apply to a read-only section, | |
4148 | then we need a DT_TEXTREL entry. */ | |
4149 | if ((info->flags & DF_TEXTREL) == 0) | |
4150 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, | |
4151 | (void *) info); | |
4152 | ||
4153 | if ((info->flags & DF_TEXTREL) != 0) | |
4154 | { | |
4155 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4156 | return FALSE; | |
4157 | } | |
4158 | } | |
4159 | } | |
4160 | #undef add_dynamic_entry | |
4161 | ||
4162 | return TRUE; | |
4163 | } | |
4164 | ||
4165 | static bfd_reloc_status_type | |
4166 | nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd, | |
4167 | bfd_vma relocation, bfd_byte *location) | |
4168 | { | |
4169 | int size; | |
4170 | bfd_vma x = 0; | |
4171 | bfd_reloc_status_type flag; | |
4172 | unsigned int rightshift = howto->rightshift; | |
4173 | unsigned int bitpos = howto->bitpos; | |
4174 | ||
4175 | /* If the size is negative, negate RELOCATION. This isn't very | |
4176 | general. */ | |
4177 | if (howto->size < 0) | |
4178 | relocation = -relocation; | |
4179 | ||
4180 | /* Get the value we are going to relocate. */ | |
4181 | size = bfd_get_reloc_size (howto); | |
4182 | switch (size) | |
4183 | { | |
4184 | default: | |
4185 | case 0: | |
4186 | case 1: | |
4187 | case 8: | |
4188 | abort (); | |
4189 | break; | |
4190 | case 2: | |
4191 | x = bfd_getb16 (location); | |
4192 | break; | |
4193 | case 4: | |
4194 | x = bfd_getb32 (location); | |
4195 | break; | |
4196 | } | |
4197 | ||
4198 | /* Check for overflow. FIXME: We may drop bits during the addition | |
4199 | which we don't check for. We must either check at every single | |
4200 | operation, which would be tedious, or we must do the computations | |
4201 | in a type larger than bfd_vma, which would be inefficient. */ | |
4202 | flag = bfd_reloc_ok; | |
4203 | if (howto->complain_on_overflow != complain_overflow_dont) | |
4204 | { | |
4205 | bfd_vma addrmask, fieldmask, signmask, ss; | |
4206 | bfd_vma a, b, sum; | |
4207 | ||
4208 | /* Get the values to be added together. For signed and unsigned | |
4209 | relocations, we assume that all values should be truncated to | |
4210 | the size of an address. For bitfields, all the bits matter. | |
4211 | See also bfd_check_overflow. */ | |
4212 | fieldmask = N_ONES (howto->bitsize); | |
4213 | signmask = ~fieldmask; | |
4214 | addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask; | |
4215 | a = (relocation & addrmask) >> rightshift; | |
4216 | b = (x & howto->src_mask & addrmask) >> bitpos; | |
4217 | ||
4218 | switch (howto->complain_on_overflow) | |
4219 | { | |
4220 | case complain_overflow_signed: | |
4221 | /* If any sign bits are set, all sign bits must be set. | |
4222 | That is, A must be a valid negative address after | |
4223 | shifting. */ | |
4224 | signmask = ~(fieldmask >> 1); | |
4225 | /* Fall through. */ | |
4226 | ||
4227 | case complain_overflow_bitfield: | |
4228 | /* Much like the signed check, but for a field one bit | |
4229 | wider. We allow a bitfield to represent numbers in the | |
4230 | range -2**n to 2**n-1, where n is the number of bits in the | |
4231 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc | |
4232 | can't overflow, which is exactly what we want. */ | |
4233 | ss = a & signmask; | |
4234 | if (ss != 0 && ss != ((addrmask >> rightshift) & signmask)) | |
4235 | flag = bfd_reloc_overflow; | |
4236 | ||
4237 | /* We only need this next bit of code if the sign bit of B | |
4238 | is below the sign bit of A. This would only happen if | |
4239 | SRC_MASK had fewer bits than BITSIZE. Note that if | |
4240 | SRC_MASK has more bits than BITSIZE, we can get into | |
4241 | trouble; we would need to verify that B is in range, as | |
4242 | we do for A above. */ | |
4243 | ss = ((~howto->src_mask) >> 1) & howto->src_mask; | |
4244 | ss >>= bitpos; | |
4245 | ||
4246 | /* Set all the bits above the sign bit. */ | |
4247 | b = (b ^ ss) - ss; | |
4248 | ||
4249 | /* Now we can do the addition. */ | |
4250 | sum = a + b; | |
4251 | ||
4252 | /* See if the result has the correct sign. Bits above the | |
4253 | sign bit are junk now; ignore them. If the sum is | |
4254 | positive, make sure we did not have all negative inputs; | |
4255 | if the sum is negative, make sure we did not have all | |
4256 | positive inputs. The test below looks only at the sign | |
4257 | bits, and it really just | |
4258 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) | |
4259 | ||
4260 | We mask with addrmask here to explicitly allow an address | |
4261 | wrap-around. The Linux kernel relies on it, and it is | |
4262 | the only way to write assembler code which can run when | |
4263 | loaded at a location 0x80000000 away from the location at | |
4264 | which it is linked. */ | |
4265 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) | |
4266 | flag = bfd_reloc_overflow; | |
4267 | ||
4268 | break; | |
4269 | ||
4270 | case complain_overflow_unsigned: | |
4271 | /* Checking for an unsigned overflow is relatively easy: | |
4272 | trim the addresses and add, and trim the result as well. | |
4273 | Overflow is normally indicated when the result does not | |
4274 | fit in the field. However, we also need to consider the | |
4275 | case when, e.g., fieldmask is 0x7fffffff or smaller, an | |
4276 | input is 0x80000000, and bfd_vma is only 32 bits; then we | |
4277 | will get sum == 0, but there is an overflow, since the | |
4278 | inputs did not fit in the field. Instead of doing a | |
4279 | separate test, we can check for this by or-ing in the | |
4280 | operands when testing for the sum overflowing its final | |
4281 | field. */ | |
4282 | sum = (a + b) & addrmask; | |
4283 | if ((a | b | sum) & signmask) | |
4284 | flag = bfd_reloc_overflow; | |
4285 | break; | |
4286 | ||
4287 | default: | |
4288 | abort (); | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | /* Put RELOCATION in the right bits. */ | |
4293 | relocation >>= (bfd_vma) rightshift; | |
4294 | relocation <<= (bfd_vma) bitpos; | |
4295 | ||
4296 | /* Add RELOCATION to the right bits of X. */ | |
4297 | /* FIXME : 090616 | |
4298 | Because the relaxation may generate duplicate relocation at one address, | |
4299 | an addition to immediate in the instruction may cause the relocation added | |
4300 | several times. | |
4301 | This bug should be fixed in assembler, but a check is also needed here. */ | |
4302 | if (howto->partial_inplace) | |
4303 | x = ((x & ~howto->dst_mask) | |
4304 | | (((x & howto->src_mask) + relocation) & howto->dst_mask)); | |
4305 | else | |
4306 | x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask)); | |
4307 | ||
4308 | ||
4309 | /* Put the relocated value back in the object file. */ | |
4310 | switch (size) | |
4311 | { | |
4312 | default: | |
4313 | case 0: | |
4314 | case 1: | |
4315 | case 8: | |
4316 | abort (); | |
4317 | break; | |
4318 | case 2: | |
4319 | bfd_putb16 (x, location); | |
4320 | break; | |
4321 | case 4: | |
4322 | bfd_putb32 (x, location); | |
4323 | break; | |
4324 | } | |
4325 | ||
4326 | return flag; | |
4327 | } | |
4328 | ||
4329 | static bfd_reloc_status_type | |
4330 | nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, | |
4331 | asection *input_section, bfd_byte *contents, | |
4332 | bfd_vma address, bfd_vma value, bfd_vma addend) | |
4333 | { | |
4334 | bfd_vma relocation; | |
4335 | ||
4336 | /* Sanity check the address. */ | |
4337 | if (address > bfd_get_section_limit (input_bfd, input_section)) | |
4338 | return bfd_reloc_outofrange; | |
4339 | ||
4340 | /* This function assumes that we are dealing with a basic relocation | |
4341 | against a symbol. We want to compute the value of the symbol to | |
4342 | relocate to. This is just VALUE, the value of the symbol, plus | |
4343 | ADDEND, any addend associated with the reloc. */ | |
4344 | relocation = value + addend; | |
4345 | ||
4346 | /* If the relocation is PC relative, we want to set RELOCATION to | |
4347 | the distance between the symbol (currently in RELOCATION) and the | |
4348 | location we are relocating. Some targets (e.g., i386-aout) | |
4349 | arrange for the contents of the section to be the negative of the | |
4350 | offset of the location within the section; for such targets | |
4351 | pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF) | |
4352 | simply leave the contents of the section as zero; for such | |
4353 | targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not | |
4354 | need to subtract out the offset of the location within the | |
4355 | section (which is just ADDRESS). */ | |
4356 | if (howto->pc_relative) | |
4357 | { | |
4358 | relocation -= (input_section->output_section->vma | |
4359 | + input_section->output_offset); | |
4360 | if (howto->pcrel_offset) | |
4361 | relocation -= address; | |
4362 | } | |
4363 | ||
4364 | return nds32_relocate_contents (howto, input_bfd, relocation, | |
4365 | contents + address); | |
4366 | } | |
4367 | ||
4368 | static bfd_boolean | |
4369 | nds32_elf_output_symbol_hook (struct bfd_link_info *info, | |
4370 | const char *name, | |
4371 | Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED, | |
4372 | asection *input_sec, | |
4373 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) | |
4374 | { | |
4375 | const char *source; | |
4376 | FILE *sym_ld_script = NULL; | |
4377 | struct elf_nds32_link_hash_table *table; | |
4378 | ||
4379 | table = nds32_elf_hash_table (info); | |
4380 | sym_ld_script = table->sym_ld_script; | |
4381 | if (!sym_ld_script) | |
4382 | return TRUE; | |
4383 | ||
4384 | if (!h || !name || *name == '\0') | |
4385 | return TRUE; | |
4386 | ||
4387 | if (input_sec->flags & SEC_EXCLUDE) | |
4388 | return TRUE; | |
4389 | ||
4390 | if (!check_start_export_sym) | |
4391 | { | |
4392 | fprintf (sym_ld_script, "SECTIONS\n{\n"); | |
4393 | check_start_export_sym = 1; | |
4394 | } | |
4395 | ||
4396 | if (h->root.type == bfd_link_hash_defined | |
4397 | || h->root.type == bfd_link_hash_defweak) | |
4398 | { | |
4399 | if (!h->root.u.def.section->output_section) | |
4400 | return TRUE; | |
4401 | ||
4402 | if (bfd_is_const_section (input_sec)) | |
4403 | source = input_sec->name; | |
4404 | else | |
4405 | source = input_sec->owner->filename; | |
4406 | ||
4407 | fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n", | |
4408 | h->root.root.string, | |
4409 | (long) (h->root.u.def.value | |
4410 | + h->root.u.def.section->output_section->vma | |
4411 | + h->root.u.def.section->output_offset), source); | |
4412 | } | |
4413 | ||
4414 | return TRUE; | |
4415 | } | |
4416 | ||
4417 | /* Relocate an NDS32/D ELF section. | |
4418 | There is some attempt to make this function usable for many architectures, | |
4419 | both for RELA and REL type relocs, if only to serve as a learning tool. | |
4420 | ||
4421 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
4422 | to handle the relocations for a section. | |
4423 | ||
4424 | The relocs are always passed as Rela structures; if the section | |
4425 | actually uses Rel structures, the r_addend field will always be | |
4426 | zero. | |
4427 | ||
4428 | This function is responsible for adjust the section contents as | |
4429 | necessary, and (if using Rela relocs and generating a | |
4430 | relocatable output file) adjusting the reloc addend as | |
4431 | necessary. | |
4432 | ||
4433 | This function does not have to worry about setting the reloc | |
4434 | address or the reloc symbol index. | |
4435 | ||
4436 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
4437 | ||
4438 | LOCAL_SECTIONS is an array giving the section in the input file | |
4439 | corresponding to the st_shndx field of each local symbol. | |
4440 | ||
4441 | The global hash table entry for the global symbols can be found | |
4442 | via elf_sym_hashes (input_bfd). | |
4443 | ||
4444 | When generating relocatable output, this function must handle | |
4445 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
4446 | going to be the section symbol corresponding to the output | |
4447 | section, which means that the addend must be adjusted | |
4448 | accordingly. */ | |
4449 | ||
1c8f6a4d KLC |
4450 | static bfd_vma |
4451 | dtpoff_base (struct bfd_link_info *info) | |
4452 | { | |
4453 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
4454 | if (elf_hash_table (info)->tls_sec == NULL) | |
4455 | return 0; | |
4456 | return elf_hash_table (info)->tls_sec->vma; | |
4457 | } | |
4458 | ||
35c08157 KLC |
4459 | static bfd_boolean |
4460 | nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, | |
4461 | struct bfd_link_info * info, | |
4462 | bfd * input_bfd, | |
4463 | asection * input_section, | |
4464 | bfd_byte * contents, | |
4465 | Elf_Internal_Rela * relocs, | |
4466 | Elf_Internal_Sym * local_syms, | |
4467 | asection ** local_sections) | |
4468 | { | |
4469 | Elf_Internal_Shdr *symtab_hdr; | |
4470 | struct elf_link_hash_entry **sym_hashes; | |
4471 | Elf_Internal_Rela *rel, *relend; | |
4472 | bfd_boolean ret = TRUE; /* Assume success. */ | |
4473 | int align = 0; | |
4474 | bfd_reloc_status_type r; | |
4475 | const char *errmsg = NULL; | |
4476 | bfd_vma gp; | |
4477 | struct elf_nds32_link_hash_table *htab; | |
4478 | bfd *dynobj; | |
4479 | bfd_vma *local_got_offsets; | |
4480 | asection *sgot, *splt, *sreloc; | |
4481 | bfd_vma high_address; | |
4482 | struct elf_nds32_link_hash_table *table; | |
4483 | int eliminate_gc_relocs; | |
4484 | bfd_vma fpbase_addr; | |
4485 | ||
4486 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
4487 | sym_hashes = elf_sym_hashes (input_bfd); | |
4488 | htab = nds32_elf_hash_table (info); | |
4489 | high_address = bfd_get_section_limit (input_bfd, input_section); | |
4490 | ||
4491 | dynobj = htab->root.dynobj; | |
4492 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
4493 | ||
4494 | sgot = htab->sgot; | |
4495 | splt = htab->splt; | |
4496 | sreloc = NULL; | |
4497 | ||
4498 | rel = relocs; | |
4499 | relend = relocs + input_section->reloc_count; | |
4500 | ||
4501 | table = nds32_elf_hash_table (info); | |
4502 | eliminate_gc_relocs = table->eliminate_gc_relocs; | |
4503 | /* By this time, we can adjust the value of _SDA_BASE_. */ | |
4504 | if ((!info->relocatable)) | |
4505 | { | |
4506 | is_SDA_BASE_set = 1; | |
4507 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE); | |
4508 | if (r != bfd_reloc_ok) | |
4509 | return FALSE; | |
4510 | } | |
4511 | ||
1c8f6a4d KLC |
4512 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) |
4513 | if (!nds32_elf_ifc_reloc ()) | |
4514 | (*_bfd_error_handler) (_("error: IFC relocation error.")); | |
4515 | ||
4516 | /* Relocation for .ex9.itable. */ | |
4517 | if (table->target_optimize & NDS32_RELAX_EX9_ON | |
4518 | || (table->ex9_import_file && table->update_ex9_table)) | |
4519 | nds32_elf_ex9_reloc_jmp (info); | |
4520 | ||
35c08157 KLC |
4521 | /* Use gp as fp to prevent truncated fit. Because in relaxation time |
4522 | the fp value is set as gp, and it has be reverted for instruction | |
4523 | setting fp. */ | |
4524 | fpbase_addr = elf_gp (output_bfd); | |
4525 | ||
4526 | for (rel = relocs; rel < relend; rel++) | |
4527 | { | |
4528 | enum elf_nds32_reloc_type r_type; | |
4529 | reloc_howto_type *howto = NULL; | |
4530 | unsigned long r_symndx; | |
4531 | struct elf_link_hash_entry *h = NULL; | |
4532 | Elf_Internal_Sym *sym = NULL; | |
4533 | asection *sec; | |
4534 | bfd_vma relocation; | |
4535 | ||
4536 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to | |
4537 | ensure it's zero (we use REL relocs, not RELA). Therefore this | |
4538 | should be assigning zero to `addend', but for clarity we use | |
4539 | `r_addend'. */ | |
4540 | ||
4541 | bfd_vma addend = rel->r_addend; | |
4542 | bfd_vma offset = rel->r_offset; | |
4543 | ||
4544 | r_type = ELF32_R_TYPE (rel->r_info); | |
4545 | if (r_type >= R_NDS32_max) | |
4546 | { | |
4547 | (*_bfd_error_handler) (_("%B: error: unknown relocation type %d."), | |
4548 | input_bfd, r_type); | |
4549 | bfd_set_error (bfd_error_bad_value); | |
4550 | ret = FALSE; | |
4551 | continue; | |
4552 | } | |
4553 | ||
4554 | if (r_type == R_NDS32_GNU_VTENTRY | |
4555 | || r_type == R_NDS32_GNU_VTINHERIT | |
4556 | || r_type == R_NDS32_NONE | |
4557 | || r_type == R_NDS32_RELA_GNU_VTENTRY | |
4558 | || r_type == R_NDS32_RELA_GNU_VTINHERIT | |
4559 | || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA) | |
4560 | || r_type == R_NDS32_DATA | |
1c8f6a4d KLC |
4561 | || r_type == R_NDS32_TRAN |
4562 | || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP6)) | |
35c08157 KLC |
4563 | continue; |
4564 | ||
4565 | /* If we enter the fp-as-gp region. Resolve the address of best fp-base. */ | |
4566 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
4567 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4568 | { | |
4569 | int dist; | |
4570 | ||
4571 | /* Distance to relocation of best fp-base is encoded in R_SYM. */ | |
4572 | dist = rel->r_addend >> 16; | |
4573 | fpbase_addr = calculate_memory_address (input_bfd, rel + dist, | |
4574 | local_syms, symtab_hdr); | |
4575 | } | |
4576 | else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END | |
4577 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
4578 | { | |
4579 | fpbase_addr = elf_gp (output_bfd); | |
4580 | } | |
4581 | ||
4582 | if (((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4583 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
4584 | || r_type >= R_NDS32_RELAX_ENTRY) && !info->relocatable) | |
4585 | continue; | |
4586 | ||
4587 | howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); | |
4588 | r_symndx = ELF32_R_SYM (rel->r_info); | |
4589 | ||
4590 | /* This is a final link. */ | |
4591 | sym = NULL; | |
4592 | sec = NULL; | |
4593 | h = NULL; | |
4594 | ||
4595 | if (r_symndx < symtab_hdr->sh_info) | |
4596 | { | |
4597 | /* Local symbol. */ | |
4598 | sym = local_syms + r_symndx; | |
4599 | sec = local_sections[r_symndx]; | |
4600 | ||
4601 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
4602 | addend = rel->r_addend; | |
4603 | } | |
4604 | else | |
4605 | { | |
4606 | /* External symbol. */ | |
4607 | bfd_boolean warned, ignored, unresolved_reloc; | |
4608 | int symndx = r_symndx - symtab_hdr->sh_info; | |
4609 | ||
4610 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
4611 | r_symndx, symtab_hdr, sym_hashes, h, sec, | |
4612 | relocation, unresolved_reloc, warned, | |
4613 | ignored); | |
4614 | ||
4615 | /* la $fp, _FP_BASE_ is per-function (region). | |
4616 | Handle it specially. */ | |
4617 | switch ((int) r_type) | |
4618 | { | |
4619 | case R_NDS32_SDA19S0_RELA: | |
4620 | case R_NDS32_SDA15S0_RELA: | |
4621 | case R_NDS32_20_RELA: | |
4622 | if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string, | |
4623 | FP_BASE_NAME) == 0) | |
4624 | { | |
4625 | relocation = fpbase_addr; | |
4626 | break; | |
4627 | } | |
4628 | } | |
4629 | ||
4630 | } | |
4631 | ||
4632 | if (info->relocatable) | |
4633 | { | |
4634 | /* This is a relocatable link. We don't have to change | |
4635 | anything, unless the reloc is against a section symbol, | |
4636 | in which case we have to adjust according to where the | |
4637 | section symbol winds up in the output section. */ | |
4638 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
4639 | rel->r_addend += sec->output_offset + sym->st_value; | |
4640 | ||
4641 | continue; | |
4642 | } | |
4643 | ||
4644 | /* Sanity check the address. */ | |
4645 | if (offset > high_address) | |
4646 | { | |
4647 | r = bfd_reloc_outofrange; | |
4648 | goto check_reloc; | |
4649 | } | |
4650 | ||
4651 | if ((r_type >= R_NDS32_DWARF2_OP1_RELA | |
4652 | && r_type <= R_NDS32_DWARF2_LEB_RELA) | |
4653 | || r_type >= R_NDS32_RELAX_ENTRY) | |
4654 | continue; | |
4655 | ||
4656 | switch ((int) r_type) | |
4657 | { | |
4658 | case R_NDS32_GOTOFF: | |
4659 | /* Relocation is relative to the start of the global offset | |
4660 | table (for ld24 rx, #uimm24), e.g. access at label+addend | |
4661 | ||
4662 | ld24 rx. #label@GOTOFF + addend | |
4663 | sub rx, r12. */ | |
4664 | case R_NDS32_GOTOFF_HI20: | |
4665 | case R_NDS32_GOTOFF_LO12: | |
4666 | case R_NDS32_GOTOFF_LO15: | |
4667 | case R_NDS32_GOTOFF_LO19: | |
4668 | BFD_ASSERT (sgot != NULL); | |
4669 | ||
4670 | relocation -= elf_gp (output_bfd); | |
4671 | break; | |
4672 | ||
4673 | case R_NDS32_9_PLTREL: | |
4674 | case R_NDS32_25_PLTREL: | |
4675 | /* Relocation is to the entry for this symbol in the | |
4676 | procedure linkage table. */ | |
4677 | ||
4678 | /* The native assembler will generate a 25_PLTREL reloc | |
4679 | for a local symbol if you assemble a call from one | |
4680 | section to another when using -K pic. */ | |
4681 | if (h == NULL) | |
4682 | break; | |
4683 | ||
4684 | if (h->forced_local) | |
4685 | break; | |
4686 | ||
4687 | /* We didn't make a PLT entry for this symbol. This | |
4688 | happens when statically linking PIC code, or when | |
4689 | using -Bsymbolic. */ | |
4690 | if (h->plt.offset == (bfd_vma) - 1) | |
4691 | break; | |
4692 | ||
4693 | relocation = (splt->output_section->vma | |
4694 | + splt->output_offset + h->plt.offset); | |
4695 | break; | |
4696 | ||
4697 | case R_NDS32_PLT_GOTREL_HI20: | |
4698 | case R_NDS32_PLT_GOTREL_LO12: | |
4699 | case R_NDS32_PLT_GOTREL_LO15: | |
4700 | case R_NDS32_PLT_GOTREL_LO19: | |
4701 | case R_NDS32_PLT_GOTREL_LO20: | |
4702 | if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1) | |
4703 | { | |
4704 | /* We didn't make a PLT entry for this symbol. This | |
4705 | happens when statically linking PIC code, or when | |
4706 | using -Bsymbolic. */ | |
4707 | relocation -= elf_gp (output_bfd); | |
4708 | break; | |
4709 | } | |
4710 | ||
4711 | relocation = (splt->output_section->vma | |
4712 | + splt->output_offset + h->plt.offset); | |
4713 | ||
4714 | relocation -= elf_gp (output_bfd); | |
4715 | break; | |
4716 | ||
4717 | case R_NDS32_PLTREL_HI20: | |
4718 | case R_NDS32_PLTREL_LO12: | |
4719 | ||
4720 | /* Relocation is to the entry for this symbol in the | |
4721 | procedure linkage table. */ | |
4722 | ||
4723 | /* The native assembler will generate a 25_PLTREL reloc | |
4724 | for a local symbol if you assemble a call from one | |
4725 | section to another when using -K pic. */ | |
4726 | if (h == NULL) | |
4727 | break; | |
4728 | ||
4729 | if (h->forced_local) | |
4730 | break; | |
4731 | ||
4732 | if (h->plt.offset == (bfd_vma) - 1) | |
4733 | /* We didn't make a PLT entry for this symbol. This | |
4734 | happens when statically linking PIC code, or when | |
4735 | using -Bsymbolic. */ | |
4736 | break; | |
4737 | ||
4738 | if (splt == NULL) | |
4739 | break; | |
4740 | ||
4741 | relocation = (splt->output_section->vma | |
4742 | + splt->output_offset | |
4743 | + h->plt.offset + 4) | |
4744 | - (input_section->output_section->vma | |
4745 | + input_section->output_offset | |
4746 | + rel->r_offset); | |
4747 | ||
4748 | break; | |
4749 | ||
4750 | case R_NDS32_GOTPC20: | |
4751 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4752 | ld24 rx,#_GLOBAL_OFFSET_TABLE_ */ | |
4753 | relocation = elf_gp (output_bfd); | |
4754 | break; | |
4755 | ||
4756 | case R_NDS32_GOTPC_HI20: | |
4757 | case R_NDS32_GOTPC_LO12: | |
4758 | { | |
4759 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation | |
4760 | bl .+4 | |
4761 | seth rx,#high(_GLOBAL_OFFSET_TABLE_) | |
4762 | or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4763 | or | |
4764 | bl .+4 | |
4765 | seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) | |
4766 | add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) | |
4767 | */ | |
4768 | relocation = elf_gp (output_bfd); | |
4769 | relocation -= (input_section->output_section->vma | |
4770 | + input_section->output_offset + rel->r_offset); | |
4771 | break; | |
4772 | } | |
4773 | ||
4774 | case R_NDS32_GOT20: | |
4775 | /* Fall through. */ | |
4776 | case R_NDS32_GOT_HI20: | |
4777 | case R_NDS32_GOT_LO12: | |
4778 | case R_NDS32_GOT_LO15: | |
4779 | case R_NDS32_GOT_LO19: | |
4780 | /* Relocation is to the entry for this symbol in the global | |
4781 | offset table. */ | |
4782 | BFD_ASSERT (sgot != NULL); | |
4783 | ||
4784 | if (h != NULL) | |
4785 | { | |
4786 | bfd_boolean dyn; | |
4787 | bfd_vma off; | |
4788 | ||
4789 | off = h->got.offset; | |
4790 | BFD_ASSERT (off != (bfd_vma) - 1); | |
4791 | dyn = htab->root.dynamic_sections_created; | |
4792 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
4793 | || (info->shared | |
4794 | && (info->symbolic | |
4795 | || h->dynindx == -1 | |
4796 | || h->forced_local) && h->def_regular)) | |
4797 | { | |
4798 | /* This is actually a static link, or it is a | |
4799 | -Bsymbolic link and the symbol is defined | |
4800 | locally, or the symbol was forced to be local | |
4801 | because of a version file. We must initialize | |
4802 | this entry in the global offset table. Since the | |
4803 | offset must always be a multiple of 4, we use the | |
4804 | least significant bit to record whether we have | |
4805 | initialized it already. | |
4806 | ||
4807 | When doing a dynamic link, we create a .rela.got | |
4808 | relocation entry to initialize the value. This | |
4809 | is done in the finish_dynamic_symbol routine. */ | |
4810 | if ((off & 1) != 0) | |
4811 | off &= ~1; | |
4812 | else | |
4813 | { | |
4814 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4815 | h->got.offset |= 1; | |
4816 | } | |
4817 | } | |
4818 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4819 | - elf_gp (output_bfd); | |
4820 | } | |
4821 | else | |
4822 | { | |
4823 | bfd_vma off; | |
4824 | bfd_byte *loc; | |
4825 | ||
4826 | BFD_ASSERT (local_got_offsets != NULL | |
4827 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
4828 | ||
4829 | off = local_got_offsets[r_symndx]; | |
4830 | ||
4831 | /* The offset must always be a multiple of 4. We use | |
4832 | the least significant bit to record whether we have | |
4833 | already processed this entry. */ | |
4834 | if ((off & 1) != 0) | |
4835 | off &= ~1; | |
4836 | else | |
4837 | { | |
4838 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
4839 | ||
4840 | if (info->shared) | |
4841 | { | |
4842 | asection *srelgot; | |
4843 | Elf_Internal_Rela outrel; | |
4844 | ||
4845 | /* We need to generate a R_NDS32_RELATIVE reloc | |
4846 | for the dynamic linker. */ | |
4847 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
4848 | BFD_ASSERT (srelgot != NULL); | |
4849 | ||
4850 | outrel.r_offset = (elf_gp (output_bfd) | |
4851 | + sgot->output_offset + off); | |
4852 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4853 | outrel.r_addend = relocation; | |
4854 | loc = srelgot->contents; | |
4855 | loc += | |
4856 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
4857 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4858 | ++srelgot->reloc_count; | |
4859 | } | |
4860 | local_got_offsets[r_symndx] |= 1; | |
4861 | } | |
4862 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
4863 | - elf_gp (output_bfd); | |
4864 | } | |
4865 | ||
4866 | break; | |
4867 | ||
4868 | case R_NDS32_16_RELA: | |
4869 | case R_NDS32_20_RELA: | |
4870 | case R_NDS32_5_RELA: | |
4871 | case R_NDS32_32_RELA: | |
4872 | case R_NDS32_9_PCREL_RELA: | |
4873 | case R_NDS32_WORD_9_PCREL_RELA: | |
4874 | case R_NDS32_10_UPCREL_RELA: | |
4875 | case R_NDS32_15_PCREL_RELA: | |
4876 | case R_NDS32_17_PCREL_RELA: | |
4877 | case R_NDS32_25_PCREL_RELA: | |
4878 | case R_NDS32_HI20_RELA: | |
4879 | case R_NDS32_LO12S3_RELA: | |
4880 | case R_NDS32_LO12S2_RELA: | |
4881 | case R_NDS32_LO12S2_DP_RELA: | |
4882 | case R_NDS32_LO12S2_SP_RELA: | |
4883 | case R_NDS32_LO12S1_RELA: | |
4884 | case R_NDS32_LO12S0_RELA: | |
4885 | case R_NDS32_LO12S0_ORI_RELA: | |
4886 | if (info->shared && r_symndx != 0 | |
4887 | && (input_section->flags & SEC_ALLOC) != 0 | |
4888 | && (eliminate_gc_relocs == 0 | |
4889 | || (sec && (sec->flags & SEC_EXCLUDE) == 0)) | |
4890 | && ((r_type != R_NDS32_9_PCREL_RELA | |
4891 | && r_type != R_NDS32_WORD_9_PCREL_RELA | |
4892 | && r_type != R_NDS32_10_UPCREL_RELA | |
4893 | && r_type != R_NDS32_15_PCREL_RELA | |
4894 | && r_type != R_NDS32_17_PCREL_RELA | |
4895 | && r_type != R_NDS32_25_PCREL_RELA | |
4896 | && !(r_type == R_NDS32_32_RELA | |
4897 | && strcmp (input_section->name, ".eh_frame") == 0)) | |
4898 | || (h != NULL && h->dynindx != -1 | |
4899 | && (!info->symbolic || !h->def_regular)))) | |
4900 | { | |
4901 | Elf_Internal_Rela outrel; | |
4902 | bfd_boolean skip, relocate; | |
4903 | bfd_byte *loc; | |
4904 | ||
4905 | /* When generating a shared object, these relocations | |
4906 | are copied into the output file to be resolved at run | |
4907 | time. */ | |
4908 | ||
4909 | if (sreloc == NULL) | |
4910 | { | |
4911 | const char *name; | |
4912 | ||
4913 | name = bfd_elf_string_from_elf_section | |
4914 | (input_bfd, elf_elfheader (input_bfd)->e_shstrndx, | |
4915 | elf_section_data (input_section)->rela.hdr->sh_name); | |
4916 | if (name == NULL) | |
4917 | return FALSE; | |
4918 | ||
4919 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
4920 | && strcmp (bfd_get_section_name (input_bfd, | |
4921 | input_section), | |
4922 | name + 5) == 0); | |
4923 | ||
4924 | sreloc = bfd_get_section_by_name (dynobj, name); | |
4925 | BFD_ASSERT (sreloc != NULL); | |
4926 | } | |
4927 | ||
4928 | skip = FALSE; | |
4929 | relocate = FALSE; | |
4930 | ||
4931 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
4932 | info, | |
4933 | input_section, | |
4934 | rel->r_offset); | |
4935 | if (outrel.r_offset == (bfd_vma) - 1) | |
4936 | skip = TRUE; | |
4937 | else if (outrel.r_offset == (bfd_vma) - 2) | |
4938 | skip = TRUE, relocate = TRUE; | |
4939 | outrel.r_offset += (input_section->output_section->vma | |
4940 | + input_section->output_offset); | |
4941 | ||
4942 | if (skip) | |
4943 | memset (&outrel, 0, sizeof outrel); | |
4944 | else if (r_type == R_NDS32_17_PCREL_RELA | |
4945 | || r_type == R_NDS32_15_PCREL_RELA | |
4946 | || r_type == R_NDS32_25_PCREL_RELA) | |
4947 | { | |
4948 | BFD_ASSERT (h != NULL && h->dynindx != -1); | |
4949 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4950 | outrel.r_addend = rel->r_addend; | |
4951 | } | |
4952 | else | |
4953 | { | |
4954 | /* h->dynindx may be -1 if this symbol was marked to | |
4955 | become local. */ | |
4956 | if (h == NULL | |
4957 | || ((info->symbolic || h->dynindx == -1) | |
4958 | && h->def_regular)) | |
4959 | { | |
4960 | relocate = TRUE; | |
4961 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
4962 | outrel.r_addend = relocation + rel->r_addend; | |
4963 | } | |
4964 | else | |
4965 | { | |
4966 | BFD_ASSERT (h->dynindx != -1); | |
4967 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); | |
4968 | outrel.r_addend = rel->r_addend; | |
4969 | } | |
4970 | } | |
4971 | ||
4972 | loc = sreloc->contents; | |
4973 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
4974 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
4975 | ++sreloc->reloc_count; | |
4976 | ||
4977 | /* If this reloc is against an external symbol, we do | |
4978 | not want to fiddle with the addend. Otherwise, we | |
4979 | need to include the symbol value so that it becomes | |
4980 | an addend for the dynamic reloc. */ | |
4981 | if (!relocate) | |
4982 | continue; | |
4983 | } | |
4984 | break; | |
4985 | ||
4986 | case R_NDS32_25_ABS_RELA: | |
4987 | if (info->shared) | |
4988 | { | |
4989 | (*_bfd_error_handler) | |
1c8f6a4d KLC |
4990 | (_("%s: warning: cannot deal R_NDS32_25_ABS_RELA in shared " |
4991 | "mode."), bfd_get_filename (input_bfd)); | |
35c08157 KLC |
4992 | return FALSE; |
4993 | } | |
4994 | break; | |
4995 | ||
4996 | case R_NDS32_9_PCREL: | |
4997 | r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section, | |
4998 | contents, offset, | |
4999 | sec, relocation, addend); | |
5000 | goto check_reloc; | |
5001 | ||
5002 | case R_NDS32_HI20: | |
5003 | { | |
5004 | Elf_Internal_Rela *lorel; | |
5005 | ||
5006 | /* We allow an arbitrary number of HI20 relocs before the | |
5007 | LO12 reloc. This permits gcc to emit the HI and LO relocs | |
5008 | itself. */ | |
5009 | for (lorel = rel + 1; | |
5010 | (lorel < relend | |
5011 | && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++) | |
5012 | continue; | |
5013 | if (lorel < relend | |
5014 | && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3 | |
5015 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2 | |
5016 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1 | |
5017 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0)) | |
5018 | { | |
5019 | nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel, | |
5020 | contents, relocation + addend); | |
5021 | r = bfd_reloc_ok; | |
5022 | } | |
5023 | else | |
5024 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
1c8f6a4d KLC |
5025 | contents, offset, relocation, |
5026 | addend); | |
35c08157 KLC |
5027 | } |
5028 | ||
5029 | goto check_reloc; | |
5030 | ||
5031 | case R_NDS32_GOT17S2_RELA: | |
5032 | case R_NDS32_GOT15S2_RELA: | |
5033 | { | |
5034 | bfd_vma off; | |
5035 | ||
5036 | BFD_ASSERT (sgot != NULL); | |
5037 | ||
5038 | if (h != NULL) | |
5039 | { | |
5040 | bfd_boolean dyn; | |
5041 | ||
5042 | off = h->got.offset; | |
5043 | BFD_ASSERT (off != (bfd_vma) - 1); | |
5044 | ||
5045 | dyn = htab->root.dynamic_sections_created; | |
5046 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL | |
5047 | (dyn, info->shared, h) || (info->shared | |
5048 | && (info->symbolic | |
5049 | || h->dynindx == -1 | |
5050 | || h->forced_local) | |
5051 | && h->def_regular)) | |
5052 | { | |
5053 | /* This is actually a static link, or it is a | |
5054 | -Bsymbolic link and the symbol is defined | |
5055 | locally, or the symbol was forced to be local | |
5056 | because of a version file. We must initialize | |
5057 | this entry in the global offset table. Since the | |
5058 | offset must always be a multiple of 4, we use the | |
5059 | least significant bit to record whether we have | |
5060 | initialized it already. | |
5061 | ||
5062 | When doing a dynamic link, we create a .rela.got | |
5063 | relocation entry to initialize the value. This | |
5064 | is done in the finish_dynamic_symbol routine. */ | |
5065 | if ((off & 1) != 0) | |
5066 | off &= ~1; | |
5067 | else | |
5068 | { | |
5069 | bfd_put_32 (output_bfd, relocation, | |
5070 | sgot->contents + off); | |
5071 | h->got.offset |= 1; | |
5072 | } | |
5073 | } | |
5074 | } | |
5075 | else | |
5076 | { | |
5077 | bfd_byte *loc; | |
5078 | ||
5079 | BFD_ASSERT (local_got_offsets != NULL | |
5080 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
5081 | ||
5082 | off = local_got_offsets[r_symndx]; | |
5083 | ||
5084 | /* The offset must always be a multiple of 4. We use | |
5085 | the least significant bit to record whether we have | |
5086 | already processed this entry. */ | |
5087 | if ((off & 1) != 0) | |
5088 | off &= ~1; | |
5089 | else | |
5090 | { | |
5091 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
5092 | ||
5093 | if (info->shared) | |
5094 | { | |
5095 | asection *srelgot; | |
5096 | Elf_Internal_Rela outrel; | |
5097 | ||
5098 | /* We need to generate a R_NDS32_RELATIVE reloc | |
5099 | for the dynamic linker. */ | |
5100 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); | |
5101 | BFD_ASSERT (srelgot != NULL); | |
5102 | ||
5103 | outrel.r_offset = (elf_gp (output_bfd) | |
5104 | + sgot->output_offset + off); | |
5105 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
5106 | outrel.r_addend = relocation; | |
5107 | loc = srelgot->contents; | |
5108 | loc += | |
5109 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
5110 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5111 | ++srelgot->reloc_count; | |
5112 | } | |
5113 | local_got_offsets[r_symndx] |= 1; | |
5114 | } | |
5115 | } | |
5116 | relocation = sgot->output_section->vma + sgot->output_offset + off | |
5117 | - elf_gp (output_bfd); | |
5118 | } | |
5119 | if (relocation & align) | |
5120 | { | |
5121 | /* Incorrect alignment. */ | |
5122 | (*_bfd_error_handler) | |
5123 | (_("%B: warning: unaligned access to GOT entry."), input_bfd); | |
5124 | ret = FALSE; | |
5125 | r = bfd_reloc_dangerous; | |
5126 | goto check_reloc; | |
5127 | } | |
5128 | break; | |
5129 | ||
5130 | case R_NDS32_SDA16S3_RELA: | |
5131 | case R_NDS32_SDA15S3_RELA: | |
5132 | case R_NDS32_SDA15S3: | |
5133 | align = 0x7; | |
5134 | goto handle_sda; | |
5135 | ||
5136 | case R_NDS32_SDA17S2_RELA: | |
5137 | case R_NDS32_SDA15S2_RELA: | |
5138 | case R_NDS32_SDA12S2_SP_RELA: | |
5139 | case R_NDS32_SDA12S2_DP_RELA: | |
5140 | case R_NDS32_SDA15S2: | |
5141 | case R_NDS32_SDA_FP7U2_RELA: | |
5142 | align = 0x3; | |
5143 | goto handle_sda; | |
5144 | ||
5145 | case R_NDS32_SDA18S1_RELA: | |
5146 | case R_NDS32_SDA15S1_RELA: | |
5147 | case R_NDS32_SDA15S1: | |
5148 | align = 0x1; | |
5149 | goto handle_sda; | |
5150 | ||
5151 | case R_NDS32_SDA19S0_RELA: | |
5152 | case R_NDS32_SDA15S0_RELA: | |
5153 | case R_NDS32_SDA15S0: | |
5154 | { | |
5155 | align = 0x0; | |
5156 | handle_sda: | |
5157 | BFD_ASSERT (sec != NULL); | |
5158 | ||
5159 | /* If the symbol is in the abs section, the out_bfd will be null. | |
5160 | This happens when the relocation has a symbol@GOTOFF. */ | |
5161 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE); | |
5162 | if (r != bfd_reloc_ok) | |
5163 | { | |
5164 | (*_bfd_error_handler) | |
5165 | (_("%B: warning: relocate SDA_BASE failed."), input_bfd); | |
5166 | ret = FALSE; | |
5167 | goto check_reloc; | |
5168 | } | |
5169 | ||
5170 | /* At this point `relocation' contains the object's | |
5171 | address. */ | |
5172 | if (r_type == R_NDS32_SDA_FP7U2_RELA) | |
5173 | { | |
5174 | relocation -= fpbase_addr; | |
5175 | } | |
5176 | else | |
5177 | relocation -= gp; | |
5178 | /* Now it contains the offset from _SDA_BASE_. */ | |
5179 | ||
5180 | /* Make sure alignment is correct. */ | |
5181 | ||
5182 | if (relocation & align) | |
5183 | { | |
5184 | /* Incorrect alignment. */ | |
5185 | (*_bfd_error_handler) | |
5186 | (_("%B(%A): warning: unaligned small data access of type %d."), | |
5187 | input_bfd, input_section, r_type); | |
5188 | ret = FALSE; | |
5189 | goto check_reloc; | |
5190 | } | |
5191 | } | |
5192 | ||
5193 | break; | |
5194 | case R_NDS32_17IFC_PCREL_RELA: | |
5195 | case R_NDS32_10IFCU_PCREL_RELA: | |
5196 | /* do nothing */ | |
5197 | break; | |
5198 | ||
1c8f6a4d KLC |
5199 | case R_NDS32_TLS_LE_HI20: |
5200 | case R_NDS32_TLS_LE_LO12: | |
5201 | case R_NDS32_TLS_LE_20: | |
5202 | case R_NDS32_TLS_LE_15S0: | |
5203 | case R_NDS32_TLS_LE_15S1: | |
5204 | case R_NDS32_TLS_LE_15S2: | |
5205 | if (elf_hash_table (info)->tls_sec != NULL) | |
5206 | relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET); | |
5207 | break; | |
5208 | case R_NDS32_TLS_IE_HI20: | |
5209 | case R_NDS32_TLS_IE_LO12S2: | |
5210 | { | |
5211 | /* Relocation is to the entry for this symbol in the global | |
5212 | offset table. */ | |
5213 | unsigned int tls_type; | |
5214 | asection *srelgot; | |
5215 | Elf_Internal_Rela outrel; | |
5216 | bfd_vma off; | |
5217 | bfd_byte *loc; | |
5218 | int indx = 0; | |
5219 | ||
5220 | BFD_ASSERT (sgot != NULL); | |
5221 | if (h != NULL) | |
5222 | { | |
5223 | bfd_boolean dyn; | |
5224 | ||
5225 | off = h->got.offset; | |
5226 | BFD_ASSERT (off != (bfd_vma) - 1); | |
5227 | dyn = htab->root.dynamic_sections_created; | |
5228 | tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type; | |
5229 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
5230 | && (!info->shared | |
5231 | || !SYMBOL_REFERENCES_LOCAL (info, h))) | |
5232 | indx = h->dynindx; | |
5233 | } | |
5234 | else | |
5235 | { | |
5236 | /* Never happen currently. */ | |
5237 | BFD_ASSERT (local_got_offsets != NULL | |
5238 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); | |
5239 | ||
5240 | off = local_got_offsets[r_symndx]; | |
5241 | ||
5242 | tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx]; | |
5243 | } | |
5244 | relocation = sgot->output_section->vma + sgot->output_offset + off; | |
5245 | ||
5246 | if (r_type == R_NDS32_TLS_IE_LO12S2) | |
5247 | break; | |
5248 | ||
5249 | /* The offset must always be a multiple of 4. We use | |
5250 | the least significant bit to record whether we have | |
5251 | already processed this entry. */ | |
5252 | if ((off & 1) != 0) | |
5253 | off &= ~1; | |
5254 | else | |
5255 | { | |
5256 | bfd_boolean need_relocs = FALSE; | |
5257 | srelgot = htab->srelgot; | |
5258 | if ((info->shared || indx != 0) | |
5259 | && (h == NULL | |
5260 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
5261 | || h->root.type != bfd_link_hash_undefweak)) | |
5262 | { | |
5263 | need_relocs = TRUE; | |
5264 | BFD_ASSERT (srelgot != NULL); | |
5265 | } | |
5266 | if (tls_type & GOT_TLS_IE) | |
5267 | { | |
5268 | if (need_relocs) | |
5269 | { | |
5270 | if (h->dynindx == 0) | |
5271 | outrel.r_addend = relocation - dtpoff_base (info); | |
5272 | else | |
5273 | outrel.r_addend = 0; | |
5274 | outrel.r_offset = (sgot->output_section->vma | |
5275 | + sgot->output_offset | |
5276 | + off); | |
5277 | outrel.r_info = | |
5278 | ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF); | |
5279 | ||
5280 | loc = srelgot->contents; | |
5281 | loc += | |
5282 | srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
5283 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
5284 | ++srelgot->reloc_count; | |
5285 | } | |
5286 | else | |
5287 | bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET, | |
5288 | sgot->contents + off); | |
5289 | } | |
5290 | } | |
5291 | } | |
5292 | break; | |
5293 | ||
35c08157 KLC |
5294 | /* DON'T fall through. */ |
5295 | ||
5296 | default: | |
5297 | /* OLD_NDS32_RELOC. */ | |
5298 | ||
5299 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5300 | contents, offset, relocation, addend); | |
5301 | goto check_reloc; | |
5302 | } | |
5303 | ||
5304 | switch ((int) r_type) | |
5305 | { | |
5306 | case R_NDS32_20_RELA: | |
5307 | case R_NDS32_5_RELA: | |
5308 | case R_NDS32_9_PCREL_RELA: | |
5309 | case R_NDS32_WORD_9_PCREL_RELA: | |
5310 | case R_NDS32_10_UPCREL_RELA: | |
5311 | case R_NDS32_15_PCREL_RELA: | |
5312 | case R_NDS32_17_PCREL_RELA: | |
5313 | case R_NDS32_25_PCREL_RELA: | |
5314 | case R_NDS32_25_ABS_RELA: | |
5315 | case R_NDS32_HI20_RELA: | |
5316 | case R_NDS32_LO12S3_RELA: | |
5317 | case R_NDS32_LO12S2_RELA: | |
5318 | case R_NDS32_LO12S2_DP_RELA: | |
5319 | case R_NDS32_LO12S2_SP_RELA: | |
5320 | case R_NDS32_LO12S1_RELA: | |
5321 | case R_NDS32_LO12S0_RELA: | |
5322 | case R_NDS32_LO12S0_ORI_RELA: | |
5323 | case R_NDS32_SDA16S3_RELA: | |
5324 | case R_NDS32_SDA17S2_RELA: | |
5325 | case R_NDS32_SDA18S1_RELA: | |
5326 | case R_NDS32_SDA19S0_RELA: | |
5327 | case R_NDS32_SDA15S3_RELA: | |
5328 | case R_NDS32_SDA15S2_RELA: | |
5329 | case R_NDS32_SDA12S2_DP_RELA: | |
5330 | case R_NDS32_SDA12S2_SP_RELA: | |
5331 | case R_NDS32_SDA15S1_RELA: | |
5332 | case R_NDS32_SDA15S0_RELA: | |
5333 | case R_NDS32_SDA_FP7U2_RELA: | |
5334 | case R_NDS32_9_PLTREL: | |
5335 | case R_NDS32_25_PLTREL: | |
5336 | case R_NDS32_GOT20: | |
5337 | case R_NDS32_GOT_HI20: | |
5338 | case R_NDS32_GOT_LO12: | |
5339 | case R_NDS32_GOT_LO15: | |
5340 | case R_NDS32_GOT_LO19: | |
5341 | case R_NDS32_GOT15S2_RELA: | |
5342 | case R_NDS32_GOT17S2_RELA: | |
5343 | case R_NDS32_GOTPC20: | |
5344 | case R_NDS32_GOTPC_HI20: | |
5345 | case R_NDS32_GOTPC_LO12: | |
5346 | case R_NDS32_GOTOFF: | |
5347 | case R_NDS32_GOTOFF_HI20: | |
5348 | case R_NDS32_GOTOFF_LO12: | |
5349 | case R_NDS32_GOTOFF_LO15: | |
5350 | case R_NDS32_GOTOFF_LO19: | |
5351 | case R_NDS32_PLTREL_HI20: | |
5352 | case R_NDS32_PLTREL_LO12: | |
5353 | case R_NDS32_PLT_GOTREL_HI20: | |
5354 | case R_NDS32_PLT_GOTREL_LO12: | |
5355 | case R_NDS32_PLT_GOTREL_LO15: | |
5356 | case R_NDS32_PLT_GOTREL_LO19: | |
5357 | case R_NDS32_PLT_GOTREL_LO20: | |
5358 | case R_NDS32_17IFC_PCREL_RELA: | |
5359 | case R_NDS32_10IFCU_PCREL_RELA: | |
1c8f6a4d KLC |
5360 | case R_NDS32_TLS_LE_HI20: |
5361 | case R_NDS32_TLS_LE_LO12: | |
5362 | case R_NDS32_TLS_IE_HI20: | |
5363 | case R_NDS32_TLS_IE_LO12S2: | |
5364 | case R_NDS32_TLS_LE_20: | |
5365 | case R_NDS32_TLS_LE_15S0: | |
5366 | case R_NDS32_TLS_LE_15S1: | |
5367 | case R_NDS32_TLS_LE_15S2: | |
35c08157 | 5368 | /* Instruction related relocs must handle endian properly. */ |
1c8f6a4d | 5369 | /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */ |
35c08157 KLC |
5370 | r = nds32_elf_final_link_relocate (howto, input_bfd, |
5371 | input_section, contents, | |
5372 | rel->r_offset, relocation, | |
5373 | rel->r_addend); | |
5374 | break; | |
5375 | ||
5376 | default: | |
5377 | /* All other relocs can use default handler. */ | |
5378 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, | |
5379 | contents, rel->r_offset, | |
5380 | relocation, rel->r_addend); | |
5381 | break; | |
5382 | } | |
5383 | ||
5384 | check_reloc: | |
5385 | ||
5386 | if (r != bfd_reloc_ok) | |
5387 | { | |
5388 | /* FIXME: This should be generic enough to go in a utility. */ | |
5389 | const char *name; | |
5390 | ||
5391 | if (h != NULL) | |
5392 | name = h->root.root.string; | |
5393 | else | |
5394 | { | |
5395 | name = bfd_elf_string_from_elf_section | |
5396 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
5397 | if (name == NULL || *name == '\0') | |
5398 | name = bfd_section_name (input_bfd, sec); | |
5399 | } | |
5400 | ||
5401 | if (errmsg != NULL) | |
5402 | goto common_error; | |
5403 | ||
5404 | switch (r) | |
5405 | { | |
5406 | case bfd_reloc_overflow: | |
5407 | if (!((*info->callbacks->reloc_overflow) | |
5408 | (info, (h ? &h->root : NULL), name, howto->name, | |
5409 | (bfd_vma) 0, input_bfd, input_section, offset))) | |
5410 | return FALSE; | |
5411 | break; | |
5412 | ||
5413 | case bfd_reloc_undefined: | |
5414 | if (!((*info->callbacks->undefined_symbol) | |
5415 | (info, name, input_bfd, input_section, offset, TRUE))) | |
5416 | return FALSE; | |
5417 | break; | |
5418 | ||
5419 | case bfd_reloc_outofrange: | |
5420 | errmsg = _("internal error: out of range error"); | |
5421 | goto common_error; | |
5422 | ||
5423 | case bfd_reloc_notsupported: | |
5424 | errmsg = _("internal error: unsupported relocation error"); | |
5425 | goto common_error; | |
5426 | ||
5427 | case bfd_reloc_dangerous: | |
5428 | errmsg = _("internal error: dangerous error"); | |
5429 | goto common_error; | |
5430 | ||
5431 | default: | |
5432 | errmsg = _("internal error: unknown error"); | |
5433 | /* Fall through. */ | |
5434 | ||
5435 | common_error: | |
5436 | if (!((*info->callbacks->warning) | |
5437 | (info, errmsg, name, input_bfd, input_section, offset))) | |
5438 | return FALSE; | |
5439 | break; | |
5440 | } | |
5441 | } | |
5442 | } | |
5443 | ||
5444 | return ret; | |
5445 | } | |
5446 | ||
5447 | /* Finish up dynamic symbol handling. We set the contents of various | |
5448 | dynamic sections here. */ | |
5449 | ||
5450 | static bfd_boolean | |
5451 | nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, | |
5452 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) | |
5453 | { | |
5454 | struct elf_nds32_link_hash_table *htab; | |
5455 | bfd_byte *loc; | |
5456 | ||
5457 | htab = nds32_elf_hash_table (info); | |
5458 | ||
5459 | if (h->plt.offset != (bfd_vma) - 1) | |
5460 | { | |
5461 | asection *splt; | |
5462 | asection *sgot; | |
5463 | asection *srela; | |
5464 | ||
5465 | bfd_vma plt_index; | |
5466 | bfd_vma got_offset; | |
5467 | bfd_vma local_plt_offset; | |
5468 | Elf_Internal_Rela rela; | |
5469 | ||
5470 | /* This symbol has an entry in the procedure linkage table. Set | |
5471 | it up. */ | |
5472 | ||
5473 | BFD_ASSERT (h->dynindx != -1); | |
5474 | ||
5475 | splt = htab->splt; | |
5476 | sgot = htab->sgotplt; | |
5477 | srela = htab->srelplt; | |
5478 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
5479 | ||
5480 | /* Get the index in the procedure linkage table which | |
5481 | corresponds to this symbol. This is the index of this symbol | |
5482 | in all the symbols for which we are making plt entries. The | |
5483 | first entry in the procedure linkage table is reserved. */ | |
5484 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
5485 | ||
5486 | /* Get the offset into the .got table of the entry that | |
5487 | corresponds to this function. Each .got entry is 4 bytes. | |
5488 | The first three are reserved. */ | |
5489 | got_offset = (plt_index + 3) * 4; | |
5490 | ||
5491 | /* Fill in the entry in the procedure linkage table. */ | |
5492 | if (!info->shared) | |
5493 | { | |
5494 | unsigned long insn; | |
5495 | ||
5496 | insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma | |
5497 | + sgot->output_offset + got_offset) >> 12) | |
5498 | & 0xfffff); | |
5499 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5500 | ||
5501 | insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma | |
5502 | + sgot->output_offset + got_offset) & 0x0fff) | |
5503 | >> 2); | |
5504 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5505 | ||
5506 | insn = PLT_ENTRY_WORD2; | |
5507 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5508 | ||
5509 | insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff); | |
5510 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5511 | ||
5512 | insn = PLT_ENTRY_WORD4 | |
5513 | + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff); | |
5514 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5515 | local_plt_offset = 12; | |
5516 | } | |
5517 | else | |
5518 | { | |
5519 | /* sda_base must be set at this time. */ | |
5520 | unsigned long insn; | |
5521 | long offset; | |
5522 | ||
5523 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5524 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5525 | offset = sgot->output_section->vma + sgot->output_offset + got_offset | |
5526 | - elf_gp (output_bfd); | |
5527 | insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff); | |
5528 | bfd_putb32 (insn, splt->contents + h->plt.offset); | |
5529 | ||
5530 | insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff); | |
5531 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); | |
5532 | ||
5533 | insn = PLT_PIC_ENTRY_WORD2; | |
5534 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); | |
5535 | ||
5536 | insn = PLT_PIC_ENTRY_WORD3; | |
5537 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); | |
5538 | ||
5539 | insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff); | |
5540 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); | |
5541 | ||
5542 | insn = PLT_PIC_ENTRY_WORD5 | |
5543 | + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff); | |
5544 | bfd_putb32 (insn, splt->contents + h->plt.offset + 20); | |
5545 | ||
5546 | local_plt_offset = 16; | |
5547 | } | |
5548 | ||
5549 | /* Fill in the entry in the global offset table, | |
5550 | so it will fall through to the next instruction for the first time. */ | |
5551 | bfd_put_32 (output_bfd, | |
5552 | (splt->output_section->vma + splt->output_offset | |
5553 | + h->plt.offset + local_plt_offset), | |
5554 | sgot->contents + got_offset); | |
5555 | ||
5556 | /* Fill in the entry in the .rela.plt section. */ | |
5557 | rela.r_offset = (sgot->output_section->vma | |
5558 | + sgot->output_offset + got_offset); | |
5559 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT); | |
5560 | rela.r_addend = 0; | |
5561 | loc = srela->contents; | |
5562 | loc += plt_index * sizeof (Elf32_External_Rela); | |
5563 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5564 | ||
5565 | if (!h->def_regular) | |
5566 | { | |
5567 | /* Mark the symbol as undefined, rather than as defined in | |
5568 | the .plt section. Leave the value alone. */ | |
5569 | sym->st_shndx = SHN_UNDEF; | |
5570 | if (!h->ref_regular_nonweak) | |
5571 | sym->st_value = 0; | |
5572 | } | |
5573 | } | |
5574 | ||
5575 | if (h->got.offset != (bfd_vma) - 1) | |
5576 | { | |
5577 | asection *sgot; | |
5578 | asection *srela; | |
5579 | Elf_Internal_Rela rela; | |
5580 | ||
5581 | /* This symbol has an entry in the global offset table. | |
5582 | Set it up. */ | |
5583 | ||
5584 | sgot = htab->sgot; | |
5585 | srela = htab->srelgot; | |
5586 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
5587 | ||
5588 | rela.r_offset = (sgot->output_section->vma | |
5589 | + sgot->output_offset + (h->got.offset & ~1)); | |
5590 | ||
5591 | /* If this is a -Bsymbolic link, and the symbol is defined | |
5592 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
5593 | the symbol was forced to be local because of a version file. | |
5594 | The entry in the global offset table will already have been | |
5595 | initialized in the relocate_section function. */ | |
5596 | if (info->shared | |
5597 | && (info->symbolic | |
5598 | || h->dynindx == -1 || h->forced_local) && h->def_regular) | |
5599 | { | |
5600 | rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); | |
5601 | rela.r_addend = (h->root.u.def.value | |
5602 | + h->root.u.def.section->output_section->vma | |
5603 | + h->root.u.def.section->output_offset); | |
5604 | } | |
5605 | else | |
5606 | { | |
5607 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
5608 | bfd_put_32 (output_bfd, (bfd_vma) 0, | |
5609 | sgot->contents + h->got.offset); | |
5610 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT); | |
5611 | rela.r_addend = 0; | |
5612 | } | |
5613 | ||
5614 | loc = srela->contents; | |
5615 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); | |
5616 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5617 | ++srela->reloc_count; | |
5618 | } | |
5619 | ||
5620 | if (h->needs_copy) | |
5621 | { | |
5622 | asection *s; | |
5623 | Elf_Internal_Rela rela; | |
5624 | ||
5625 | /* This symbols needs a copy reloc. Set it up. */ | |
5626 | ||
5627 | BFD_ASSERT (h->dynindx != -1 | |
5628 | && (h->root.type == bfd_link_hash_defined | |
5629 | || h->root.type == bfd_link_hash_defweak)); | |
5630 | ||
5631 | s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss"); | |
5632 | BFD_ASSERT (s != NULL); | |
5633 | ||
5634 | rela.r_offset = (h->root.u.def.value | |
5635 | + h->root.u.def.section->output_section->vma | |
5636 | + h->root.u.def.section->output_offset); | |
5637 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY); | |
5638 | rela.r_addend = 0; | |
5639 | loc = s->contents; | |
5640 | loc += s->reloc_count * sizeof (Elf32_External_Rela); | |
5641 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
5642 | ++s->reloc_count; | |
5643 | } | |
5644 | ||
5645 | /* Mark some specially defined symbols as absolute. */ | |
5646 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
5647 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
5648 | sym->st_shndx = SHN_ABS; | |
5649 | ||
5650 | return TRUE; | |
5651 | } | |
5652 | ||
5653 | ||
5654 | /* Finish up the dynamic sections. */ | |
5655 | ||
5656 | static bfd_boolean | |
5657 | nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) | |
5658 | { | |
5659 | struct elf_nds32_link_hash_table *htab; | |
5660 | bfd *dynobj; | |
5661 | asection *sdyn; | |
5662 | asection *sgot; | |
5663 | ||
5664 | htab = nds32_elf_hash_table (info); | |
5665 | dynobj = htab->root.dynobj; | |
5666 | ||
5667 | sgot = htab->sgotplt; | |
5668 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); | |
5669 | ||
5670 | if (htab->root.dynamic_sections_created) | |
5671 | { | |
5672 | asection *splt; | |
5673 | Elf32_External_Dyn *dyncon, *dynconend; | |
5674 | ||
5675 | BFD_ASSERT (sgot != NULL && sdyn != NULL); | |
5676 | ||
5677 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
5678 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
5679 | ||
5680 | for (; dyncon < dynconend; dyncon++) | |
5681 | { | |
5682 | Elf_Internal_Dyn dyn; | |
5683 | asection *s; | |
5684 | ||
5685 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
5686 | ||
5687 | switch (dyn.d_tag) | |
5688 | { | |
5689 | default: | |
5690 | break; | |
5691 | ||
5692 | case DT_PLTGOT: | |
5693 | /* name = ".got"; */ | |
5694 | s = htab->sgot->output_section; | |
5695 | goto get_vma; | |
5696 | case DT_JMPREL: | |
5697 | s = htab->srelplt->output_section; | |
5698 | get_vma: | |
5699 | BFD_ASSERT (s != NULL); | |
5700 | dyn.d_un.d_ptr = s->vma; | |
5701 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5702 | break; | |
5703 | ||
5704 | case DT_PLTRELSZ: | |
5705 | s = htab->srelplt->output_section; | |
5706 | BFD_ASSERT (s != NULL); | |
5707 | dyn.d_un.d_val = s->size; | |
5708 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5709 | break; | |
5710 | ||
5711 | case DT_RELASZ: | |
5712 | /* My reading of the SVR4 ABI indicates that the | |
5713 | procedure linkage table relocs (DT_JMPREL) should be | |
5714 | included in the overall relocs (DT_RELA). This is | |
5715 | what Solaris does. However, UnixWare can not handle | |
5716 | that case. Therefore, we override the DT_RELASZ entry | |
5717 | here to make it not include the JMPREL relocs. Since | |
5718 | the linker script arranges for .rela.plt to follow all | |
5719 | other relocation sections, we don't have to worry | |
5720 | about changing the DT_RELA entry. */ | |
5721 | if (htab->srelplt != NULL) | |
5722 | { | |
5723 | s = htab->srelplt->output_section; | |
5724 | dyn.d_un.d_val -= s->size; | |
5725 | } | |
5726 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
5727 | break; | |
5728 | } | |
5729 | } | |
5730 | ||
5731 | /* Fill in the first entry in the procedure linkage table. */ | |
5732 | splt = htab->splt; | |
5733 | if (splt && splt->size > 0) | |
5734 | { | |
5735 | if (info->shared) | |
5736 | { | |
5737 | unsigned long insn; | |
5738 | long offset; | |
5739 | ||
5740 | /* FIXME, sda_base is 65536, it will damage opcode. */ | |
5741 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ | |
5742 | offset = sgot->output_section->vma + sgot->output_offset + 4 | |
5743 | - elf_gp (output_bfd); | |
5744 | insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff); | |
5745 | bfd_putb32 (insn, splt->contents); | |
5746 | ||
5747 | /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */ | |
5748 | /* here has a typo? */ | |
5749 | insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff); | |
5750 | bfd_putb32 (insn, splt->contents + 4); | |
5751 | ||
5752 | insn = PLT0_PIC_ENTRY_WORD2; | |
5753 | bfd_putb32 (insn, splt->contents + 8); | |
5754 | ||
5755 | insn = PLT0_PIC_ENTRY_WORD3; | |
5756 | bfd_putb32 (insn, splt->contents + 12); | |
5757 | ||
5758 | insn = PLT0_PIC_ENTRY_WORD4; | |
5759 | bfd_putb32 (insn, splt->contents + 16); | |
5760 | ||
5761 | insn = PLT0_PIC_ENTRY_WORD5; | |
5762 | bfd_putb32 (insn, splt->contents + 20); | |
5763 | } | |
5764 | else | |
5765 | { | |
5766 | unsigned long insn; | |
5767 | unsigned long addr; | |
5768 | ||
5769 | /* addr = .got + 4 */ | |
5770 | addr = sgot->output_section->vma + sgot->output_offset + 4; | |
5771 | insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff); | |
5772 | bfd_putb32 (insn, splt->contents); | |
5773 | ||
5774 | insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff); | |
5775 | bfd_putb32 (insn, splt->contents + 4); | |
5776 | ||
5777 | insn = PLT0_ENTRY_WORD2; | |
5778 | bfd_putb32 (insn, splt->contents + 8); | |
5779 | ||
5780 | insn = PLT0_ENTRY_WORD3; | |
5781 | bfd_putb32 (insn, splt->contents + 12); | |
5782 | ||
5783 | insn = PLT0_ENTRY_WORD4; | |
5784 | bfd_putb32 (insn, splt->contents + 16); | |
5785 | } | |
5786 | ||
5787 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
5788 | PLT_ENTRY_SIZE; | |
5789 | } | |
5790 | } | |
5791 | ||
5792 | /* Fill in the first three entries in the global offset table. */ | |
5793 | if (sgot && sgot->size > 0) | |
5794 | { | |
5795 | if (sdyn == NULL) | |
5796 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
5797 | else | |
5798 | bfd_put_32 (output_bfd, | |
5799 | sdyn->output_section->vma + sdyn->output_offset, | |
5800 | sgot->contents); | |
5801 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
5802 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
5803 | ||
5804 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
5805 | } | |
5806 | ||
5807 | return TRUE; | |
5808 | } | |
5809 | \f | |
5810 | ||
5811 | /* Set the right machine number. */ | |
5812 | ||
5813 | static bfd_boolean | |
5814 | nds32_elf_object_p (bfd *abfd) | |
5815 | { | |
5816 | static unsigned int cur_arch = 0; | |
5817 | ||
5818 | if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)) | |
5819 | { | |
5820 | /* E_N1_ARCH is a wild card, so it is set only when no others exist. */ | |
5821 | cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH); | |
5822 | } | |
5823 | ||
5824 | switch (cur_arch) | |
5825 | { | |
5826 | default: | |
5827 | case E_N1_ARCH: | |
5828 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1); | |
5829 | break; | |
5830 | case E_N1H_ARCH: | |
5831 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h); | |
5832 | break; | |
5833 | case E_NDS_ARCH_STAR_V2_0: | |
5834 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2); | |
5835 | break; | |
5836 | case E_NDS_ARCH_STAR_V3_0: | |
5837 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3); | |
5838 | break; | |
5839 | case E_NDS_ARCH_STAR_V3_M: | |
5840 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m); | |
5841 | break; | |
5842 | } | |
5843 | ||
5844 | return TRUE; | |
5845 | } | |
5846 | ||
5847 | /* Store the machine number in the flags field. */ | |
5848 | ||
5849 | static void | |
5850 | nds32_elf_final_write_processing (bfd *abfd, | |
5851 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
5852 | { | |
5853 | unsigned long val; | |
5854 | static unsigned int cur_mach = 0; | |
5855 | ||
5856 | if (bfd_mach_n1 != bfd_get_mach (abfd)) | |
5857 | { | |
5858 | cur_mach = bfd_get_mach (abfd); | |
5859 | } | |
5860 | ||
5861 | switch (cur_mach) | |
5862 | { | |
5863 | case bfd_mach_n1: | |
5864 | /* Only happen when object is empty, since the case is abandon. */ | |
5865 | val = E_N1_ARCH; | |
5866 | val |= E_NDS_ABI_AABI; | |
5867 | val |= E_NDS32_ELF_VER_1_4; | |
5868 | break; | |
5869 | case bfd_mach_n1h: | |
5870 | val = E_N1H_ARCH; | |
5871 | break; | |
5872 | case bfd_mach_n1h_v2: | |
5873 | val = E_NDS_ARCH_STAR_V2_0; | |
5874 | break; | |
5875 | case bfd_mach_n1h_v3: | |
5876 | val = E_NDS_ARCH_STAR_V3_0; | |
5877 | break; | |
5878 | case bfd_mach_n1h_v3m: | |
5879 | val = E_NDS_ARCH_STAR_V3_M; | |
5880 | break; | |
5881 | default: | |
5882 | val = 0; | |
5883 | break; | |
5884 | } | |
5885 | ||
5886 | elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH; | |
5887 | elf_elfheader (abfd)->e_flags |= val; | |
5888 | } | |
5889 | ||
5890 | /* Function to keep NDS32 specific file flags. */ | |
5891 | ||
5892 | static bfd_boolean | |
5893 | nds32_elf_set_private_flags (bfd *abfd, flagword flags) | |
5894 | { | |
5895 | BFD_ASSERT (!elf_flags_init (abfd) | |
5896 | || elf_elfheader (abfd)->e_flags == flags); | |
5897 | ||
5898 | elf_elfheader (abfd)->e_flags = flags; | |
5899 | elf_flags_init (abfd) = TRUE; | |
5900 | return TRUE; | |
5901 | } | |
5902 | ||
5903 | static unsigned int | |
5904 | convert_e_flags (unsigned int e_flags, unsigned int arch) | |
5905 | { | |
5906 | if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9) | |
5907 | { | |
5908 | /* From 0.9 to 1.0. */ | |
5909 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0; | |
5910 | ||
5911 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5912 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5913 | if (arch == E_NDS_ARCH_STAR_V1_0) | |
5914 | { | |
5915 | /* Done. */ | |
5916 | return e_flags; | |
5917 | } | |
5918 | } | |
5919 | ||
5920 | /* From 1.0 to 2.0. */ | |
5921 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0; | |
5922 | ||
5923 | /* Clear E_NDS32_HAS_MFUSR_PC_INST. */ | |
5924 | e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST; | |
5925 | ||
5926 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ | |
5927 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; | |
5928 | return e_flags; | |
5929 | } | |
5930 | ||
5931 | static bfd_boolean | |
5932 | nds32_check_vec_size (bfd *ibfd) | |
5933 | { | |
5934 | static unsigned int nds32_vec_size = 0; | |
5935 | ||
5936 | asection *sec_t = NULL; | |
5937 | bfd_byte *contents = NULL; | |
5938 | ||
5939 | sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags"); | |
5940 | ||
5941 | if (sec_t && sec_t->size >= 4) | |
5942 | { | |
5943 | /* Get vec_size in file. */ | |
5944 | unsigned int flag_t; | |
5945 | ||
5946 | nds32_get_section_contents (ibfd, sec_t, &contents); | |
5947 | flag_t = bfd_get_32 (ibfd, contents); | |
5948 | ||
5949 | /* The value could only be 4 or 16. */ | |
5950 | ||
5951 | if (!nds32_vec_size) | |
5952 | /* Set if not set yet. */ | |
5953 | nds32_vec_size = (flag_t & 0x3); | |
5954 | else if (nds32_vec_size != (flag_t & 0x3)) | |
5955 | { | |
5956 | (*_bfd_error_handler) (_("%B: ISR vector size mismatch" | |
5957 | " with previous modules, previous %u-byte, current %u-byte"), | |
5958 | ibfd, | |
5959 | nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff, | |
5960 | (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff); | |
5961 | return FALSE; | |
5962 | } | |
5963 | else | |
5964 | /* Only keep the first vec_size section. */ | |
5965 | sec_t->flags |= SEC_EXCLUDE; | |
5966 | } | |
5967 | ||
5968 | return TRUE; | |
5969 | } | |
5970 | ||
5971 | /* Merge backend specific data from an object file to the output | |
5972 | object file when linking. */ | |
5973 | ||
5974 | static bfd_boolean | |
5975 | nds32_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
5976 | { | |
5977 | flagword out_flags; | |
5978 | flagword in_flags; | |
5979 | flagword out_16regs; | |
5980 | flagword in_no_mac; | |
5981 | flagword out_no_mac; | |
5982 | flagword in_16regs; | |
5983 | flagword out_version; | |
5984 | flagword in_version; | |
5985 | flagword out_fpu_config; | |
5986 | flagword in_fpu_config; | |
5987 | ||
5988 | /* TODO: Revise to use object-attributes instead. */ | |
5989 | if (!nds32_check_vec_size (ibfd)) | |
5990 | return FALSE; | |
5991 | ||
5992 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
5993 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
5994 | return TRUE; | |
5995 | ||
5996 | if (bfd_little_endian (ibfd) != bfd_little_endian (obfd)) | |
5997 | { | |
5998 | (*_bfd_error_handler) | |
5999 | (_("%B: warning: Endian mismatch with previous modules."), ibfd); | |
6000 | ||
6001 | bfd_set_error (bfd_error_bad_value); | |
6002 | return FALSE; | |
6003 | } | |
6004 | ||
6005 | in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION; | |
6006 | if (in_version == E_NDS32_ELF_VER_1_2) | |
6007 | { | |
6008 | (*_bfd_error_handler) | |
6009 | (_("%B: warning: Older version of object file encountered, " | |
6010 | "Please recompile with current tool chain."), ibfd); | |
6011 | } | |
6012 | ||
6013 | /* We may need to merge V1 and V2 arch object files to V2. */ | |
6014 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6015 | != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
6016 | { | |
6017 | /* Need to convert version. */ | |
6018 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6019 | == E_NDS_ARCH_STAR_RESERVED) | |
6020 | { | |
6021 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
6022 | } | |
6023 | else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9 | |
6024 | || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) | |
6025 | > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) | |
6026 | { | |
6027 | elf_elfheader (obfd)->e_flags = | |
6028 | convert_e_flags (elf_elfheader (obfd)->e_flags, | |
6029 | (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)); | |
6030 | } | |
6031 | else | |
6032 | { | |
6033 | elf_elfheader (ibfd)->e_flags = | |
6034 | convert_e_flags (elf_elfheader (ibfd)->e_flags, | |
6035 | (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)); | |
6036 | } | |
6037 | } | |
6038 | ||
6039 | /* Extract some flags. */ | |
6040 | in_flags = elf_elfheader (ibfd)->e_flags | |
6041 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
6042 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
6043 | ||
6044 | /* The following flags need special treatment. */ | |
6045 | in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
6046 | in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
6047 | in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
6048 | ||
6049 | /* Extract some flags. */ | |
6050 | out_flags = elf_elfheader (obfd)->e_flags | |
6051 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION | |
6052 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); | |
6053 | ||
6054 | /* The following flags need special treatment. */ | |
6055 | out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; | |
6056 | out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; | |
6057 | out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF; | |
6058 | out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION; | |
6059 | if (!elf_flags_init (obfd)) | |
6060 | { | |
6061 | /* If the input is the default architecture then do not | |
6062 | bother setting the flags for the output architecture, | |
6063 | instead allow future merges to do this. If no future | |
6064 | merges ever set these flags then they will retain their | |
6065 | unitialised values, which surprise surprise, correspond | |
6066 | to the default values. */ | |
6067 | if (bfd_get_arch_info (ibfd)->the_default) | |
6068 | return TRUE; | |
6069 | ||
6070 | elf_flags_init (obfd) = TRUE; | |
6071 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
6072 | ||
6073 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
6074 | && bfd_get_arch_info (obfd)->the_default) | |
6075 | { | |
6076 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
6077 | bfd_get_mach (ibfd)); | |
6078 | } | |
6079 | ||
6080 | return TRUE; | |
6081 | } | |
6082 | ||
6083 | /* Check flag compatibility. */ | |
6084 | if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI)) | |
6085 | { | |
6086 | (*_bfd_error_handler) | |
6087 | (_("%B: error: ABI mismatch with previous modules."), ibfd); | |
6088 | ||
6089 | bfd_set_error (bfd_error_bad_value); | |
6090 | return FALSE; | |
6091 | } | |
6092 | ||
6093 | if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH)) | |
6094 | { | |
6095 | if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH)) | |
6096 | { | |
6097 | (*_bfd_error_handler) | |
6098 | (_("%B: error: Instruction set mismatch with previous modules."), ibfd); | |
6099 | ||
6100 | bfd_set_error (bfd_error_bad_value); | |
6101 | return FALSE; | |
6102 | } | |
6103 | } | |
6104 | ||
6105 | /* When linking with V1.2 and V1.3 objects together the output is V1.2. | |
6106 | and perf ext1 and DIV are mergerd to perf ext1. */ | |
6107 | if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2) | |
6108 | { | |
6109 | elf_elfheader (obfd)->e_flags = | |
6110 | (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6111 | | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6112 | | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6113 | ? E_NDS32_HAS_EXT_INST : 0) | |
6114 | | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) | |
6115 | ? E_NDS32_HAS_EXT_INST : 0) | |
6116 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
6117 | | ((in_version > out_version) ? out_version : in_version); | |
6118 | } | |
6119 | else | |
6120 | { | |
6121 | if (in_version != out_version) | |
6122 | (*_bfd_error_handler) (_("%B: warning: Incompatible elf-versions %s and %s."), | |
6123 | ibfd, nds32_elfver_strtab[out_version], | |
6124 | nds32_elfver_strtab[in_version]); | |
6125 | ||
6126 | elf_elfheader (obfd)->e_flags = in_flags | out_flags | |
6127 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) | |
6128 | | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config) | |
6129 | | (in_version > out_version ? out_version : in_version); | |
6130 | } | |
6131 | ||
6132 | return TRUE; | |
6133 | } | |
6134 | ||
6135 | /* Display the flags field. */ | |
6136 | ||
6137 | static bfd_boolean | |
6138 | nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
6139 | { | |
6140 | FILE *file = (FILE *) ptr; | |
6141 | ||
6142 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
6143 | ||
6144 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
6145 | ||
6146 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); | |
6147 | ||
6148 | switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH) | |
6149 | { | |
6150 | default: | |
6151 | case E_N1_ARCH: | |
6152 | fprintf (file, _(": n1 instructions")); | |
6153 | break; | |
6154 | case E_N1H_ARCH: | |
6155 | fprintf (file, _(": n1h instructions")); | |
6156 | break; | |
6157 | } | |
6158 | ||
6159 | fputc ('\n', file); | |
6160 | ||
6161 | return TRUE; | |
6162 | } | |
6163 | ||
6164 | static unsigned int | |
6165 | nds32_elf_action_discarded (asection *sec) | |
6166 | { | |
6167 | ||
6168 | if (strncmp | |
6169 | (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0) | |
6170 | return 0; | |
6171 | ||
6172 | return _bfd_elf_default_action_discarded (sec); | |
6173 | } | |
6174 | ||
6175 | static asection * | |
6176 | nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
6177 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h, | |
6178 | Elf_Internal_Sym *sym) | |
6179 | { | |
6180 | if (h != NULL) | |
6181 | switch (ELF32_R_TYPE (rel->r_info)) | |
6182 | { | |
6183 | case R_NDS32_GNU_VTINHERIT: | |
6184 | case R_NDS32_GNU_VTENTRY: | |
6185 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6186 | case R_NDS32_RELA_GNU_VTENTRY: | |
6187 | return NULL; | |
6188 | } | |
6189 | ||
6190 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
6191 | } | |
6192 | ||
6193 | static bfd_boolean | |
6194 | nds32_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, | |
6195 | const Elf_Internal_Rela *relocs) | |
6196 | { | |
6197 | /* Update the got entry reference counts for the section being removed. */ | |
6198 | Elf_Internal_Shdr *symtab_hdr; | |
6199 | struct elf_link_hash_entry **sym_hashes; | |
6200 | bfd_signed_vma *local_got_refcounts; | |
6201 | const Elf_Internal_Rela *rel, *relend; | |
6202 | ||
6203 | elf_section_data (sec)->local_dynrel = NULL; | |
6204 | ||
6205 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6206 | sym_hashes = elf_sym_hashes (abfd); | |
6207 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6208 | ||
6209 | relend = relocs + sec->reloc_count; | |
6210 | for (rel = relocs; rel < relend; rel++) | |
6211 | { | |
6212 | unsigned long r_symndx; | |
6213 | struct elf_link_hash_entry *h = NULL; | |
6214 | ||
6215 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6216 | if (r_symndx >= symtab_hdr->sh_info) | |
6217 | { | |
6218 | /* External symbol. */ | |
6219 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6220 | while (h->root.type == bfd_link_hash_indirect | |
6221 | || h->root.type == bfd_link_hash_warning) | |
6222 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6223 | } | |
6224 | ||
6225 | switch (ELF32_R_TYPE (rel->r_info)) | |
6226 | { | |
6227 | case R_NDS32_GOT_HI20: | |
6228 | case R_NDS32_GOT_LO12: | |
6229 | case R_NDS32_GOT_LO15: | |
6230 | case R_NDS32_GOT_LO19: | |
6231 | case R_NDS32_GOT17S2_RELA: | |
6232 | case R_NDS32_GOT15S2_RELA: | |
6233 | case R_NDS32_GOTOFF: | |
6234 | case R_NDS32_GOTOFF_HI20: | |
6235 | case R_NDS32_GOTOFF_LO12: | |
6236 | case R_NDS32_GOTOFF_LO15: | |
6237 | case R_NDS32_GOTOFF_LO19: | |
6238 | case R_NDS32_GOT20: | |
6239 | case R_NDS32_GOTPC_HI20: | |
6240 | case R_NDS32_GOTPC_LO12: | |
6241 | case R_NDS32_GOTPC20: | |
6242 | if (h != NULL) | |
6243 | { | |
6244 | if (h->got.refcount > 0) | |
6245 | h->got.refcount--; | |
6246 | } | |
6247 | else | |
6248 | { | |
6249 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) | |
6250 | local_got_refcounts[r_symndx]--; | |
6251 | } | |
6252 | break; | |
6253 | ||
6254 | case R_NDS32_16_RELA: | |
6255 | case R_NDS32_20_RELA: | |
6256 | case R_NDS32_5_RELA: | |
6257 | case R_NDS32_32_RELA: | |
6258 | case R_NDS32_HI20_RELA: | |
6259 | case R_NDS32_LO12S3_RELA: | |
6260 | case R_NDS32_LO12S2_RELA: | |
6261 | case R_NDS32_LO12S2_DP_RELA: | |
6262 | case R_NDS32_LO12S2_SP_RELA: | |
6263 | case R_NDS32_LO12S1_RELA: | |
6264 | case R_NDS32_LO12S0_RELA: | |
6265 | case R_NDS32_LO12S0_ORI_RELA: | |
6266 | case R_NDS32_SDA16S3_RELA: | |
6267 | case R_NDS32_SDA17S2_RELA: | |
6268 | case R_NDS32_SDA18S1_RELA: | |
6269 | case R_NDS32_SDA19S0_RELA: | |
6270 | case R_NDS32_SDA15S3_RELA: | |
6271 | case R_NDS32_SDA15S2_RELA: | |
6272 | case R_NDS32_SDA12S2_DP_RELA: | |
6273 | case R_NDS32_SDA12S2_SP_RELA: | |
6274 | case R_NDS32_SDA15S1_RELA: | |
6275 | case R_NDS32_SDA15S0_RELA: | |
6276 | case R_NDS32_SDA_FP7U2_RELA: | |
6277 | case R_NDS32_15_PCREL_RELA: | |
6278 | case R_NDS32_17_PCREL_RELA: | |
6279 | case R_NDS32_25_PCREL_RELA: | |
6280 | if (h != NULL) | |
6281 | { | |
6282 | struct elf_nds32_link_hash_entry *eh; | |
6283 | struct elf_nds32_dyn_relocs **pp; | |
6284 | struct elf_nds32_dyn_relocs *p; | |
6285 | ||
6286 | if (!info->shared && h->plt.refcount > 0) | |
6287 | h->plt.refcount -= 1; | |
6288 | ||
6289 | eh = (struct elf_nds32_link_hash_entry *) h; | |
6290 | ||
6291 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
6292 | if (p->sec == sec) | |
6293 | { | |
6294 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA | |
6295 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA | |
6296 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA) | |
6297 | p->pc_count -= 1; | |
6298 | p->count -= 1; | |
6299 | if (p->count == 0) | |
6300 | *pp = p->next; | |
6301 | break; | |
6302 | } | |
6303 | } | |
6304 | break; | |
6305 | ||
6306 | case R_NDS32_9_PLTREL: | |
6307 | case R_NDS32_25_PLTREL: | |
6308 | if (h != NULL) | |
6309 | { | |
6310 | if (h->plt.refcount > 0) | |
6311 | h->plt.refcount--; | |
6312 | } | |
6313 | break; | |
6314 | ||
6315 | default: | |
6316 | break; | |
6317 | } | |
6318 | } | |
6319 | ||
6320 | return TRUE; | |
6321 | } | |
6322 | ||
6323 | /* Look through the relocs for a section during the first phase. | |
6324 | Since we don't do .gots or .plts, we just need to consider the | |
6325 | virtual table relocs for gc. */ | |
6326 | ||
6327 | static bfd_boolean | |
6328 | nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
6329 | asection *sec, const Elf_Internal_Rela *relocs) | |
6330 | { | |
6331 | Elf_Internal_Shdr *symtab_hdr; | |
6332 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
6333 | const Elf_Internal_Rela *rel; | |
6334 | const Elf_Internal_Rela *rel_end; | |
6335 | struct elf_nds32_link_hash_table *htab; | |
6336 | bfd *dynobj; | |
6337 | asection *sreloc = NULL; | |
6338 | ||
6339 | if (info->relocatable) | |
6340 | return TRUE; | |
6341 | ||
6342 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
6343 | sym_hashes = elf_sym_hashes (abfd); | |
6344 | sym_hashes_end = | |
6345 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); | |
6346 | if (!elf_bad_symtab (abfd)) | |
6347 | sym_hashes_end -= symtab_hdr->sh_info; | |
6348 | ||
6349 | htab = nds32_elf_hash_table (info); | |
6350 | dynobj = htab->root.dynobj; | |
6351 | ||
6352 | rel_end = relocs + sec->reloc_count; | |
6353 | for (rel = relocs; rel < rel_end; rel++) | |
6354 | { | |
6355 | enum elf_nds32_reloc_type r_type; | |
6356 | struct elf_link_hash_entry *h; | |
6357 | unsigned long r_symndx; | |
1c8f6a4d | 6358 | int tls_type, old_tls_type; |
35c08157 KLC |
6359 | |
6360 | r_symndx = ELF32_R_SYM (rel->r_info); | |
6361 | r_type = ELF32_R_TYPE (rel->r_info); | |
6362 | if (r_symndx < symtab_hdr->sh_info) | |
6363 | h = NULL; | |
6364 | else | |
6365 | { | |
6366 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
6367 | while (h->root.type == bfd_link_hash_indirect | |
6368 | || h->root.type == bfd_link_hash_warning) | |
6369 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6370 | } | |
6371 | ||
1c8f6a4d KLC |
6372 | /* Some relocs require a global offset table. We create |
6373 | got section here, since these relocation need got section | |
6374 | and it is not created yet. */ | |
35c08157 KLC |
6375 | if (htab->sgot == NULL) |
6376 | { | |
6377 | switch (r_type) | |
6378 | { | |
6379 | case R_NDS32_GOT_HI20: | |
6380 | case R_NDS32_GOT_LO12: | |
6381 | case R_NDS32_GOT_LO15: | |
6382 | case R_NDS32_GOT_LO19: | |
6383 | case R_NDS32_GOT17S2_RELA: | |
6384 | case R_NDS32_GOT15S2_RELA: | |
6385 | case R_NDS32_GOTOFF: | |
6386 | case R_NDS32_GOTOFF_HI20: | |
6387 | case R_NDS32_GOTOFF_LO12: | |
6388 | case R_NDS32_GOTOFF_LO15: | |
6389 | case R_NDS32_GOTOFF_LO19: | |
6390 | case R_NDS32_GOTPC20: | |
6391 | case R_NDS32_GOTPC_HI20: | |
6392 | case R_NDS32_GOTPC_LO12: | |
6393 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6394 | case R_NDS32_TLS_IE_HI20: |
6395 | case R_NDS32_TLS_IE_LO12S2: | |
35c08157 KLC |
6396 | if (dynobj == NULL) |
6397 | htab->root.dynobj = dynobj = abfd; | |
6398 | if (!create_got_section (dynobj, info)) | |
6399 | return FALSE; | |
6400 | break; | |
6401 | ||
6402 | default: | |
6403 | break; | |
6404 | } | |
6405 | } | |
6406 | ||
6407 | switch ((int) r_type) | |
6408 | { | |
6409 | case R_NDS32_GOT_HI20: | |
6410 | case R_NDS32_GOT_LO12: | |
6411 | case R_NDS32_GOT_LO15: | |
6412 | case R_NDS32_GOT_LO19: | |
6413 | case R_NDS32_GOT20: | |
1c8f6a4d KLC |
6414 | case R_NDS32_TLS_IE_HI20: |
6415 | case R_NDS32_TLS_IE_LO12S2: | |
6416 | switch (r_type) | |
6417 | { | |
6418 | case R_NDS32_TLS_IE_HI20: | |
6419 | case R_NDS32_TLS_IE_LO12S2: | |
6420 | tls_type = GOT_TLS_IE; | |
6421 | break; | |
6422 | default: | |
6423 | tls_type = GOT_NORMAL; | |
6424 | break; | |
6425 | } | |
35c08157 | 6426 | if (h != NULL) |
1c8f6a4d KLC |
6427 | { |
6428 | old_tls_type = elf32_nds32_hash_entry (h)->tls_type; | |
6429 | h->got.refcount += 1; | |
6430 | } | |
35c08157 KLC |
6431 | else |
6432 | { | |
6433 | bfd_signed_vma *local_got_refcounts; | |
6434 | ||
6435 | /* This is a global offset table entry for a local | |
6436 | symbol. */ | |
6437 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
6438 | if (local_got_refcounts == NULL) | |
6439 | { | |
6440 | bfd_size_type size; | |
6441 | ||
6442 | size = symtab_hdr->sh_info; | |
6443 | size *= sizeof (bfd_signed_vma); | |
6444 | local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size); | |
6445 | if (local_got_refcounts == NULL) | |
6446 | return FALSE; | |
6447 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
6448 | } | |
6449 | local_got_refcounts[r_symndx] += 1; | |
1c8f6a4d | 6450 | old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx]; |
35c08157 | 6451 | } |
35c08157 | 6452 | |
1c8f6a4d KLC |
6453 | /* We will already have issued an error message if there |
6454 | is a TLS/non-TLS mismatch, based on the symbol | |
6455 | type. So just combine any TLS types needed. */ | |
6456 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL | |
6457 | && tls_type != GOT_NORMAL) | |
6458 | tls_type |= old_tls_type; | |
6459 | ||
6460 | if (old_tls_type != tls_type) | |
6461 | { | |
6462 | if (h != NULL) | |
6463 | elf32_nds32_hash_entry (h)->tls_type = tls_type; | |
6464 | else | |
6465 | elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type; | |
6466 | } | |
6467 | break; | |
6468 | case R_NDS32_9_PLTREL: | |
35c08157 KLC |
6469 | case R_NDS32_25_PLTREL: |
6470 | case R_NDS32_PLTREL_HI20: | |
6471 | case R_NDS32_PLTREL_LO12: | |
6472 | case R_NDS32_PLT_GOTREL_HI20: | |
6473 | case R_NDS32_PLT_GOTREL_LO12: | |
6474 | case R_NDS32_PLT_GOTREL_LO15: | |
6475 | case R_NDS32_PLT_GOTREL_LO19: | |
6476 | case R_NDS32_PLT_GOTREL_LO20: | |
6477 | ||
6478 | /* This symbol requires a procedure linkage table entry. We | |
6479 | actually build the entry in adjust_dynamic_symbol, | |
6480 | because this might be a case of linking PIC code without | |
6481 | linking in any dynamic objects, in which case we don't | |
6482 | need to generate a procedure linkage table after all. */ | |
6483 | ||
6484 | /* If this is a local symbol, we resolve it directly without | |
6485 | creating a procedure linkage table entry. */ | |
6486 | if (h == NULL) | |
6487 | continue; | |
6488 | ||
6489 | if (h->forced_local) | |
6490 | break; | |
6491 | ||
1c8f6a4d | 6492 | elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL; |
35c08157 KLC |
6493 | h->needs_plt = 1; |
6494 | h->plt.refcount += 1; | |
6495 | break; | |
6496 | ||
6497 | case R_NDS32_16_RELA: | |
6498 | case R_NDS32_20_RELA: | |
6499 | case R_NDS32_5_RELA: | |
6500 | case R_NDS32_32_RELA: | |
6501 | case R_NDS32_HI20_RELA: | |
6502 | case R_NDS32_LO12S3_RELA: | |
6503 | case R_NDS32_LO12S2_RELA: | |
6504 | case R_NDS32_LO12S2_DP_RELA: | |
6505 | case R_NDS32_LO12S2_SP_RELA: | |
6506 | case R_NDS32_LO12S1_RELA: | |
6507 | case R_NDS32_LO12S0_RELA: | |
6508 | case R_NDS32_LO12S0_ORI_RELA: | |
6509 | case R_NDS32_SDA16S3_RELA: | |
6510 | case R_NDS32_SDA17S2_RELA: | |
6511 | case R_NDS32_SDA18S1_RELA: | |
6512 | case R_NDS32_SDA19S0_RELA: | |
6513 | case R_NDS32_SDA15S3_RELA: | |
6514 | case R_NDS32_SDA15S2_RELA: | |
6515 | case R_NDS32_SDA12S2_DP_RELA: | |
6516 | case R_NDS32_SDA12S2_SP_RELA: | |
6517 | case R_NDS32_SDA15S1_RELA: | |
6518 | case R_NDS32_SDA15S0_RELA: | |
6519 | case R_NDS32_SDA_FP7U2_RELA: | |
6520 | case R_NDS32_15_PCREL_RELA: | |
6521 | case R_NDS32_17_PCREL_RELA: | |
6522 | case R_NDS32_25_PCREL_RELA: | |
6523 | ||
6524 | if (h != NULL && !info->shared) | |
6525 | { | |
6526 | h->non_got_ref = 1; | |
6527 | h->plt.refcount += 1; | |
6528 | } | |
6529 | ||
6530 | /* If we are creating a shared library, and this is a reloc against | |
6531 | a global symbol, or a non PC relative reloc against a local | |
6532 | symbol, then we need to copy the reloc into the shared library. | |
6533 | However, if we are linking with -Bsymbolic, we do not need to | |
6534 | copy a reloc against a global symbol which is defined in an | |
6535 | object we are including in the link (i.e., DEF_REGULAR is set). | |
6536 | At this point we have not seen all the input files, so it is | |
6537 | possible that DEF_REGULAR is not set now but will be set later | |
6538 | (it is never cleared). We account for that possibility below by | |
6539 | storing information in the dyn_relocs field of the hash table | |
6540 | entry. A similar situation occurs when creating shared libraries | |
6541 | and symbol visibility changes render the symbol local. | |
6542 | ||
6543 | If on the other hand, we are creating an executable, we may need | |
6544 | to keep relocations for symbols satisfied by a dynamic library | |
6545 | if we manage to avoid copy relocs for the symbol. */ | |
6546 | if ((info->shared | |
6547 | && (sec->flags & SEC_ALLOC) != 0 | |
6548 | && ((r_type != R_NDS32_25_PCREL_RELA | |
6549 | && r_type != R_NDS32_15_PCREL_RELA | |
6550 | && r_type != R_NDS32_17_PCREL_RELA | |
6551 | && !(r_type == R_NDS32_32_RELA | |
6552 | && strcmp (sec->name, ".eh_frame") == 0)) | |
6553 | || (h != NULL | |
6554 | && (!info->symbolic | |
6555 | || h->root.type == bfd_link_hash_defweak | |
6556 | || !h->def_regular)))) | |
6557 | || (!info->shared | |
6558 | && (sec->flags & SEC_ALLOC) != 0 | |
6559 | && h != NULL | |
6560 | && (h->root.type == bfd_link_hash_defweak | |
6561 | || !h->def_regular))) | |
6562 | { | |
6563 | struct elf_nds32_dyn_relocs *p; | |
6564 | struct elf_nds32_dyn_relocs **head; | |
6565 | ||
6566 | if (dynobj == NULL) | |
6567 | htab->root.dynobj = dynobj = abfd; | |
6568 | ||
6569 | /* When creating a shared object, we must copy these | |
6570 | relocs into the output file. We create a reloc | |
6571 | section in dynobj and make room for the reloc. */ | |
6572 | if (sreloc == NULL) | |
6573 | { | |
6574 | const char *name; | |
6575 | ||
6576 | name = bfd_elf_string_from_elf_section | |
6577 | (abfd, elf_elfheader (abfd)->e_shstrndx, | |
6578 | elf_section_data (sec)->rela.hdr->sh_name); | |
6579 | if (name == NULL) | |
6580 | return FALSE; | |
6581 | ||
6582 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 | |
6583 | && strcmp (bfd_get_section_name (abfd, sec), | |
6584 | name + 5) == 0); | |
6585 | ||
6586 | sreloc = bfd_get_section_by_name (dynobj, name); | |
6587 | if (sreloc == NULL) | |
6588 | { | |
6589 | flagword flags; | |
6590 | ||
6591 | sreloc = bfd_make_section (dynobj, name); | |
6592 | flags = (SEC_HAS_CONTENTS | SEC_READONLY | |
6593 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
6594 | if ((sec->flags & SEC_ALLOC) != 0) | |
6595 | flags |= SEC_ALLOC | SEC_LOAD; | |
6596 | if (sreloc == NULL | |
6597 | || !bfd_set_section_flags (dynobj, sreloc, flags) | |
6598 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) | |
6599 | return FALSE; | |
6600 | ||
6601 | elf_section_type (sreloc) = SHT_RELA; | |
6602 | } | |
6603 | elf_section_data (sec)->sreloc = sreloc; | |
6604 | } | |
6605 | ||
6606 | /* If this is a global symbol, we count the number of | |
6607 | relocations we need for this symbol. */ | |
6608 | if (h != NULL) | |
6609 | head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs; | |
6610 | else | |
6611 | { | |
6612 | asection *s; | |
6613 | ||
6614 | Elf_Internal_Sym *isym; | |
6615 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); | |
6616 | if (isym == NULL) | |
6617 | return FALSE; | |
6618 | ||
6619 | /* Track dynamic relocs needed for local syms too. */ | |
6620 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6621 | if (s == NULL) | |
6622 | return FALSE; | |
6623 | ||
6624 | head = ((struct elf_nds32_dyn_relocs **) | |
6625 | &elf_section_data (s)->local_dynrel); | |
6626 | } | |
6627 | ||
6628 | p = *head; | |
6629 | if (p == NULL || p->sec != sec) | |
6630 | { | |
6631 | bfd_size_type amt = sizeof (*p); | |
6632 | p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt); | |
6633 | if (p == NULL) | |
6634 | return FALSE; | |
6635 | p->next = *head; | |
6636 | *head = p; | |
6637 | p->sec = sec; | |
6638 | p->count = 0; | |
6639 | p->pc_count = 0; | |
6640 | } | |
6641 | ||
6642 | p->count += 1; | |
6643 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA | |
6644 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA | |
6645 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA) | |
6646 | p->pc_count += 1; | |
6647 | } | |
6648 | break; | |
6649 | ||
6650 | /* This relocation describes the C++ object vtable hierarchy. | |
6651 | Reconstruct it for later use during GC. */ | |
6652 | case R_NDS32_RELA_GNU_VTINHERIT: | |
6653 | case R_NDS32_GNU_VTINHERIT: | |
6654 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
6655 | return FALSE; | |
6656 | break; | |
6657 | ||
6658 | /* This relocation describes which C++ vtable entries are actually | |
6659 | used. Record for later use during GC. */ | |
6660 | case R_NDS32_GNU_VTENTRY: | |
6661 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) | |
6662 | return FALSE; | |
6663 | break; | |
6664 | case R_NDS32_RELA_GNU_VTENTRY: | |
6665 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
6666 | return FALSE; | |
6667 | break; | |
6668 | } | |
6669 | } | |
6670 | ||
6671 | return TRUE; | |
6672 | } | |
6673 | ||
6674 | /* Write VAL in uleb128 format to P, returning a pointer to the | |
6675 | following byte. | |
6676 | This code is copied from elf-attr.c. */ | |
6677 | ||
6678 | static bfd_byte * | |
6679 | write_uleb128 (bfd_byte *p, unsigned int val) | |
6680 | { | |
6681 | bfd_byte c; | |
6682 | do | |
6683 | { | |
6684 | c = val & 0x7f; | |
6685 | val >>= 7; | |
6686 | if (val) | |
6687 | c |= 0x80; | |
6688 | *(p++) = c; | |
6689 | } | |
6690 | while (val); | |
6691 | return p; | |
6692 | } | |
6693 | ||
6694 | static bfd_signed_vma | |
6695 | calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
6696 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr, | |
6697 | int *pic_ext_target) | |
6698 | { | |
6699 | bfd_signed_vma foff; | |
6700 | bfd_vma symval, addend; | |
6701 | asection *sym_sec; | |
6702 | ||
6703 | /* Get the value of the symbol referred to by the reloc. */ | |
6704 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6705 | { | |
6706 | Elf_Internal_Sym *isym; | |
6707 | ||
6708 | /* A local symbol. */ | |
6709 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6710 | ||
6711 | if (isym->st_shndx == SHN_UNDEF) | |
6712 | sym_sec = bfd_und_section_ptr; | |
6713 | else if (isym->st_shndx == SHN_ABS) | |
6714 | sym_sec = bfd_abs_section_ptr; | |
6715 | else if (isym->st_shndx == SHN_COMMON) | |
6716 | sym_sec = bfd_com_section_ptr; | |
6717 | else | |
6718 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6719 | symval = isym->st_value + sym_sec->output_section->vma | |
6720 | + sym_sec->output_offset; | |
6721 | } | |
6722 | else | |
6723 | { | |
6724 | unsigned long indx; | |
6725 | struct elf_link_hash_entry *h; | |
6726 | bfd *owner; | |
6727 | ||
6728 | /* An external symbol. */ | |
6729 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6730 | h = elf_sym_hashes (abfd)[indx]; | |
6731 | BFD_ASSERT (h != NULL); | |
6732 | ||
6733 | if (h->root.type != bfd_link_hash_defined | |
6734 | && h->root.type != bfd_link_hash_defweak) | |
6735 | /* This appears to be a reference to an undefined | |
6736 | symbol. Just ignore it--it will be caught by the | |
6737 | regular reloc processing. */ | |
6738 | return 0; | |
6739 | owner = h->root.u.def.section->owner; | |
6740 | if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC)) | |
6741 | *pic_ext_target = 1; | |
6742 | ||
6743 | if (h->root.u.def.section->flags & SEC_MERGE) | |
6744 | { | |
6745 | sym_sec = h->root.u.def.section; | |
6746 | symval = _bfd_merged_section_offset (abfd, &sym_sec, | |
6747 | elf_section_data (sym_sec)->sec_info, | |
6748 | h->root.u.def.value); | |
6749 | symval = symval + sym_sec->output_section->vma | |
6750 | + sym_sec->output_offset; | |
6751 | } | |
6752 | else | |
6753 | symval = (h->root.u.def.value | |
6754 | + h->root.u.def.section->output_section->vma | |
6755 | + h->root.u.def.section->output_offset); | |
6756 | } | |
6757 | ||
6758 | addend = irel->r_addend; | |
6759 | ||
6760 | foff = (symval + addend | |
6761 | - (irel->r_offset + sec->output_section->vma + sec->output_offset)); | |
6762 | return foff; | |
6763 | } | |
6764 | ||
6765 | static bfd_vma | |
6766 | calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
6767 | Elf_Internal_Sym *isymbuf, | |
6768 | Elf_Internal_Rela *irel, | |
6769 | Elf_Internal_Shdr *symtab_hdr) | |
6770 | { | |
6771 | bfd_vma symval; | |
6772 | ||
6773 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
6774 | { | |
6775 | Elf_Internal_Sym *isym; | |
6776 | asection *sym_sec; | |
6777 | /* A local symbol. */ | |
6778 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
6779 | ||
6780 | if (isym->st_shndx == SHN_UNDEF) | |
6781 | sym_sec = bfd_und_section_ptr; | |
6782 | else if (isym->st_shndx == SHN_ABS) | |
6783 | sym_sec = bfd_abs_section_ptr; | |
6784 | else if (isym->st_shndx == SHN_COMMON) | |
6785 | sym_sec = bfd_com_section_ptr; | |
6786 | else | |
6787 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
6788 | symval = isym->st_value + sym_sec->output_section->vma | |
6789 | + sym_sec->output_offset; | |
6790 | } | |
6791 | else | |
6792 | { | |
6793 | unsigned long indx; | |
6794 | struct elf_link_hash_entry *h; | |
6795 | struct elf_nds32_link_hash_table *htab; | |
6796 | asection *splt; | |
6797 | ||
6798 | /* An external symbol. */ | |
6799 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
6800 | h = elf_sym_hashes (abfd)[indx]; | |
6801 | BFD_ASSERT (h != NULL); | |
6802 | htab = nds32_elf_hash_table (link_info); | |
6803 | splt = htab->splt; | |
6804 | ||
6805 | while (h->root.type == bfd_link_hash_indirect | |
6806 | || h->root.type == bfd_link_hash_warning) | |
6807 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
6808 | ||
6809 | if (h->plt.offset == (bfd_vma) - 1) | |
6810 | { | |
6811 | if (h->root.type != bfd_link_hash_defined | |
6812 | && h->root.type != bfd_link_hash_defweak) | |
6813 | /* This appears to be a reference to an undefined | |
6814 | * symbol. Just ignore it--it will be caught by the | |
6815 | * regular reloc processing. */ | |
6816 | return 0; | |
6817 | symval = (h->root.u.def.value | |
6818 | + h->root.u.def.section->output_section->vma | |
6819 | + h->root.u.def.section->output_offset); | |
6820 | } | |
6821 | else | |
6822 | symval = splt->output_section->vma + h->plt.offset; | |
6823 | } | |
6824 | ||
6825 | return symval; | |
6826 | } | |
6827 | ||
6828 | static bfd_signed_vma | |
6829 | calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info, | |
6830 | Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel, | |
6831 | Elf_Internal_Shdr *symtab_hdr) | |
6832 | { | |
6833 | bfd_vma foff; | |
6834 | if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
6835 | symtab_hdr)) == 0) | |
6836 | return 0; | |
6837 | else | |
6838 | return foff - (irel->r_offset | |
6839 | + sec->output_section->vma + sec->output_offset); | |
6840 | } | |
6841 | \f | |
6842 | /* Convert a 32-bit instruction to 16-bit one. | |
6843 | INSN is the input 32-bit instruction, INSN16 is the output 16-bit | |
6844 | instruction. If INSN_TYPE is not NULL, it the CGEN instruction | |
6845 | type of INSN16. Return 1 if successful. */ | |
6846 | ||
6847 | static int | |
6848 | nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
6849 | int *pinsn_type) | |
6850 | { | |
6851 | uint16_t insn16 = 0; | |
6852 | int insn_type; | |
6853 | unsigned long mach = bfd_get_mach (abfd); | |
6854 | ||
6855 | if (N32_SH5 (insn) != 0) | |
6856 | return 0; | |
6857 | ||
6858 | switch (N32_SUB5 (insn)) | |
6859 | { | |
6860 | case N32_ALU1_ADD_SLLI: | |
6861 | case N32_ALU1_ADD_SRLI: | |
6862 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6863 | { | |
6864 | insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn), | |
6865 | N32_RB5 (insn)); | |
6866 | insn_type = NDS32_INSN_ADD333; | |
6867 | } | |
6868 | else if (N32_IS_RT4 (insn)) | |
6869 | { | |
6870 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6871 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn)); | |
6872 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6873 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn)); | |
6874 | insn_type = NDS32_INSN_ADD45; | |
6875 | } | |
6876 | break; | |
6877 | ||
6878 | case N32_ALU1_SUB_SLLI: | |
6879 | case N32_ALU1_SUB_SRLI: | |
6880 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) | |
6881 | { | |
6882 | insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn), | |
6883 | N32_RB5 (insn)); | |
6884 | insn_type = NDS32_INSN_SUB333; | |
6885 | } | |
6886 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6887 | { | |
6888 | insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn)); | |
6889 | insn_type = NDS32_INSN_SUB45; | |
6890 | } | |
6891 | break; | |
6892 | ||
6893 | case N32_ALU1_AND_SLLI: | |
6894 | case N32_ALU1_AND_SRLI: | |
6895 | /* and $rt, $rt, $rb -> and33 for v3, v3m. */ | |
6896 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6897 | && N32_IS_RB3 (insn)) | |
6898 | { | |
6899 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6900 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn)); | |
6901 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6902 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn)); | |
6903 | if (insn16) | |
6904 | insn_type = NDS32_INSN_AND33; | |
6905 | } | |
6906 | break; | |
6907 | ||
6908 | case N32_ALU1_XOR_SLLI: | |
6909 | case N32_ALU1_XOR_SRLI: | |
6910 | /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */ | |
6911 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6912 | && N32_IS_RB3 (insn)) | |
6913 | { | |
6914 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6915 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6916 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6917 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6918 | if (insn16) | |
6919 | insn_type = NDS32_INSN_XOR33; | |
6920 | } | |
6921 | break; | |
6922 | ||
6923 | case N32_ALU1_OR_SLLI: | |
6924 | case N32_ALU1_OR_SRLI: | |
6925 | /* or $rt, $rt, $rb -> or33 for v3, v3m. */ | |
6926 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
6927 | && N32_IS_RB3 (insn)) | |
6928 | { | |
6929 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
6930 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn)); | |
6931 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
6932 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn)); | |
6933 | if (insn16) | |
6934 | insn_type = NDS32_INSN_OR33; | |
6935 | } | |
6936 | break; | |
6937 | case N32_ALU1_NOR: | |
6938 | /* nor $rt, $ra, $ra -> not33 for v3, v3m. */ | |
6939 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn) | |
6940 | && N32_RA5 (insn) == N32_RB5 (insn)) | |
6941 | { | |
6942 | insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn)); | |
6943 | insn_type = NDS32_INSN_NOT33; | |
6944 | } | |
6945 | break; | |
6946 | case N32_ALU1_SRAI: | |
6947 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6948 | { | |
6949 | insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6950 | insn_type = NDS32_INSN_SRAI45; | |
6951 | } | |
6952 | break; | |
6953 | ||
6954 | case N32_ALU1_SRLI: | |
6955 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) | |
6956 | { | |
6957 | insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn)); | |
6958 | insn_type = NDS32_INSN_SRLI45; | |
6959 | } | |
6960 | break; | |
6961 | ||
6962 | case N32_ALU1_SLLI: | |
6963 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8) | |
6964 | { | |
6965 | insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn), | |
6966 | N32_UB5 (insn)); | |
6967 | insn_type = NDS32_INSN_SLLI333; | |
6968 | } | |
6969 | break; | |
6970 | ||
6971 | case N32_ALU1_ZEH: | |
6972 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6973 | { | |
6974 | insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
6975 | insn_type = NDS32_INSN_ZEH33; | |
6976 | } | |
6977 | break; | |
6978 | ||
6979 | case N32_ALU1_SEB: | |
6980 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6981 | { | |
6982 | insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
6983 | insn_type = NDS32_INSN_SEB33; | |
6984 | } | |
6985 | break; | |
6986 | ||
6987 | case N32_ALU1_SEH: | |
6988 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
6989 | { | |
6990 | insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn)); | |
6991 | insn_type = NDS32_INSN_SEH33; | |
6992 | } | |
6993 | break; | |
6994 | ||
6995 | case N32_ALU1_SLT: | |
6996 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
6997 | { | |
6998 | /* Implicit r15. */ | |
6999 | insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn)); | |
7000 | insn_type = NDS32_INSN_SLT45; | |
7001 | } | |
7002 | break; | |
7003 | ||
7004 | case N32_ALU1_SLTS: | |
7005 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) | |
7006 | { | |
7007 | /* Implicit r15. */ | |
7008 | insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn)); | |
7009 | insn_type = NDS32_INSN_SLTS45; | |
7010 | } | |
7011 | break; | |
7012 | } | |
7013 | ||
7014 | if ((insn16 & 0x8000) == 0) | |
7015 | return 0; | |
7016 | ||
7017 | if (pinsn16) | |
7018 | *pinsn16 = insn16; | |
7019 | if (pinsn_type) | |
7020 | *pinsn_type = insn_type; | |
7021 | return 1; | |
7022 | } | |
7023 | ||
7024 | static int | |
7025 | nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
7026 | int *pinsn_type) | |
7027 | { | |
7028 | uint16_t insn16 = 0; | |
7029 | int insn_type; | |
7030 | unsigned long mach = bfd_get_mach (abfd); | |
7031 | ||
7032 | /* TODO: bset, bclr, btgl, btst. */ | |
7033 | if (__GF (insn, 6, 4) != 0) | |
7034 | return 0; | |
7035 | ||
7036 | switch (N32_IMMU (insn, 6)) | |
7037 | { | |
7038 | case N32_ALU2_MUL: | |
7039 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7040 | && N32_IS_RB3 (insn)) | |
7041 | { | |
7042 | if (N32_RT5 (insn) == N32_RA5 (insn)) | |
7043 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn)); | |
7044 | else if (N32_RT5 (insn) == N32_RB5 (insn)) | |
7045 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn)); | |
7046 | if (insn16) | |
7047 | insn_type = NDS32_INSN_MUL33; | |
7048 | } | |
7049 | } | |
7050 | ||
7051 | if ((insn16 & 0x8000) == 0) | |
7052 | return 0; | |
7053 | ||
7054 | if (pinsn16) | |
7055 | *pinsn16 = insn16; | |
7056 | if (pinsn_type) | |
7057 | *pinsn_type = insn_type; | |
7058 | return 1; | |
7059 | } | |
7060 | ||
7061 | int | |
7062 | nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, | |
7063 | int *pinsn_type) | |
7064 | { | |
7065 | int op6; | |
7066 | uint16_t insn16 = 0; | |
7067 | int insn_type; | |
7068 | unsigned long mach = bfd_get_mach (abfd); | |
7069 | ||
7070 | /* Decode 32-bit instruction. */ | |
7071 | if (insn & 0x80000000) | |
7072 | { | |
7073 | /* Not 32-bit insn. */ | |
7074 | return 0; | |
7075 | } | |
7076 | ||
7077 | op6 = N32_OP6 (insn); | |
7078 | ||
7079 | /* Convert it to 16-bit instruction. */ | |
7080 | switch (op6) | |
7081 | { | |
7082 | case N32_OP6_MOVI: | |
7083 | if (IS_WITHIN_S (N32_IMM20S (insn), 5)) | |
7084 | { | |
7085 | insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn)); | |
7086 | insn_type = NDS32_INSN_MOVI55; | |
7087 | } | |
7088 | else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16 | |
7089 | && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn)) | |
7090 | { | |
7091 | insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn), | |
7092 | N32_IMM20S (insn) - 16); | |
7093 | insn_type = NDS32_INSN_MOVPI45; | |
7094 | } | |
7095 | break; | |
7096 | ||
7097 | case N32_OP6_ADDI: | |
7098 | if (N32_IMM15S (insn) == 0) | |
7099 | { | |
7100 | /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp', | |
7101 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
7102 | if (mach <= MACH_V2 | |
7103 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
7104 | { | |
7105 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
7106 | insn_type = NDS32_INSN_MOV55; | |
7107 | } | |
7108 | } | |
7109 | else if (N32_IMM15S (insn) > 0) | |
7110 | { | |
7111 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8) | |
7112 | { | |
7113 | insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn), | |
7114 | N32_IMM15S (insn)); | |
7115 | insn_type = NDS32_INSN_ADDI333; | |
7116 | } | |
7117 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
7118 | && N32_IMM15S (insn) < 32) | |
7119 | { | |
7120 | insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn)); | |
7121 | insn_type = NDS32_INSN_ADDI45; | |
7122 | } | |
7123 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
7124 | && N32_RT5 (insn) == N32_RA5 (insn) | |
7125 | && N32_IMM15S (insn) < 512) | |
7126 | { | |
7127 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
7128 | insn_type = NDS32_INSN_ADDI10_SP; | |
7129 | } | |
7130 | else if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
7131 | && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256 | |
7132 | && (N32_IMM15S (insn) % 4 == 0)) | |
7133 | { | |
7134 | insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn), | |
7135 | N32_IMM15S (insn) >> 2); | |
7136 | insn_type = NDS32_INSN_ADDRI36_SP; | |
7137 | } | |
7138 | } | |
7139 | else | |
7140 | { | |
7141 | /* Less than 0. */ | |
7142 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8) | |
7143 | { | |
7144 | insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7145 | 0 - N32_IMM15S (insn)); | |
7146 | insn_type = NDS32_INSN_SUBI333; | |
7147 | } | |
7148 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) | |
7149 | && N32_IMM15S (insn) > -32) | |
7150 | { | |
1c8f6a4d KLC |
7151 | insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn), |
7152 | 0 - N32_IMM15S (insn)); | |
35c08157 KLC |
7153 | insn_type = NDS32_INSN_SUBI45; |
7154 | } | |
7155 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP | |
7156 | && N32_RT5 (insn) == N32_RA5 (insn) | |
7157 | && N32_IMM15S (insn) >= -512) | |
7158 | { | |
7159 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); | |
7160 | insn_type = NDS32_INSN_ADDI10_SP; | |
7161 | } | |
7162 | } | |
7163 | break; | |
7164 | ||
7165 | case N32_OP6_ORI: | |
7166 | if (N32_IMM15S (insn) == 0) | |
7167 | { | |
7168 | /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp', | |
7169 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ | |
7170 | if (mach <= MACH_V2 | |
7171 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) | |
7172 | { | |
7173 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); | |
7174 | insn_type = NDS32_INSN_MOV55; | |
7175 | } | |
7176 | } | |
7177 | break; | |
7178 | ||
7179 | case N32_OP6_SUBRI: | |
7180 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) | |
7181 | && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0) | |
7182 | { | |
7183 | insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn)); | |
7184 | insn_type = NDS32_INSN_NEG33; | |
7185 | } | |
7186 | break; | |
7187 | ||
7188 | case N32_OP6_ANDI: | |
7189 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) | |
7190 | { | |
7191 | if (N32_IMM15U (insn) == 1) | |
7192 | { | |
7193 | insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn)); | |
7194 | insn_type = NDS32_INSN_XLSB33; | |
7195 | } | |
7196 | else if (N32_IMM15U (insn) == 0x7ff) | |
7197 | { | |
7198 | insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn)); | |
7199 | insn_type = NDS32_INSN_X11B33; | |
7200 | } | |
7201 | else if (N32_IMM15U (insn) == 0xff) | |
7202 | { | |
7203 | insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn)); | |
7204 | insn_type = NDS32_INSN_ZEB33; | |
7205 | } | |
7206 | else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn) | |
7207 | && N32_IMM15U (insn) < 256) | |
7208 | { | |
7209 | int imm15u = N32_IMM15U (insn); | |
7210 | ||
7211 | if (__builtin_popcount (imm15u) == 1) | |
7212 | { | |
7213 | /* BMSKI33 */ | |
7214 | int imm3u = __builtin_ctz (imm15u); | |
7215 | ||
7216 | insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u); | |
7217 | insn_type = NDS32_INSN_BMSKI33; | |
7218 | } | |
7219 | else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1) | |
7220 | { | |
7221 | /* FEXTI33 */ | |
7222 | int imm3u = __builtin_ctz (imm15u + 1) - 1; | |
7223 | ||
7224 | insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u); | |
7225 | insn_type = NDS32_INSN_FEXTI33; | |
7226 | } | |
7227 | } | |
7228 | } | |
7229 | break; | |
7230 | ||
7231 | case N32_OP6_SLTI: | |
7232 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
7233 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
7234 | { | |
7235 | insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
7236 | insn_type = NDS32_INSN_SLTI45; | |
7237 | } | |
7238 | break; | |
7239 | ||
7240 | case N32_OP6_SLTSI: | |
7241 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) | |
7242 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) | |
7243 | { | |
7244 | insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn)); | |
7245 | insn_type = NDS32_INSN_SLTSI45; | |
7246 | } | |
7247 | break; | |
7248 | ||
7249 | case N32_OP6_LWI: | |
7250 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7251 | { | |
7252 | insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7253 | insn_type = NDS32_INSN_LWI450; | |
7254 | } | |
7255 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7256 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7257 | { | |
7258 | insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn), | |
7259 | N32_IMM15S (insn)); | |
7260 | insn_type = NDS32_INSN_LWI333; | |
7261 | } | |
7262 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7263 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7264 | { | |
7265 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7266 | insn_type = NDS32_INSN_LWI37; | |
7267 | } | |
7268 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7269 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7270 | { | |
7271 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7272 | insn_type = NDS32_INSN_LWI37_SP; | |
7273 | } | |
7274 | else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8 | |
7275 | && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0) | |
7276 | { | |
1c8f6a4d KLC |
7277 | insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn), |
7278 | N32_IMM15S (insn) + 32); | |
35c08157 KLC |
7279 | insn_type = NDS32_INSN_LWI45_FE; |
7280 | } | |
7281 | break; | |
7282 | ||
7283 | case N32_OP6_SWI: | |
7284 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) | |
7285 | { | |
7286 | insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn)); | |
7287 | insn_type = NDS32_INSN_SWI450; | |
7288 | } | |
7289 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7290 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7291 | { | |
1c8f6a4d KLC |
7292 | insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn), |
7293 | N32_IMM15S (insn)); | |
35c08157 KLC |
7294 | insn_type = NDS32_INSN_SWI333; |
7295 | } | |
7296 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP | |
7297 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7298 | { | |
7299 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7300 | insn_type = NDS32_INSN_SWI37; | |
7301 | } | |
7302 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP | |
7303 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7304 | { | |
7305 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7306 | insn_type = NDS32_INSN_SWI37_SP; | |
7307 | } | |
7308 | break; | |
7309 | ||
7310 | case N32_OP6_LWI_BI: | |
7311 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7312 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7313 | { | |
7314 | insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7315 | N32_IMM15S (insn)); | |
7316 | insn_type = NDS32_INSN_LWI333_BI; | |
7317 | } | |
7318 | break; | |
7319 | ||
7320 | case N32_OP6_SWI_BI: | |
7321 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7322 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7323 | { | |
7324 | insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn), | |
7325 | N32_IMM15S (insn)); | |
7326 | insn_type = NDS32_INSN_SWI333_BI; | |
7327 | } | |
7328 | break; | |
7329 | ||
7330 | case N32_OP6_LHI: | |
7331 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7332 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7333 | { | |
7334 | insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7335 | N32_IMM15S (insn)); | |
7336 | insn_type = NDS32_INSN_LHI333; | |
7337 | } | |
7338 | break; | |
7339 | ||
7340 | case N32_OP6_SHI: | |
7341 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7342 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7343 | { | |
7344 | insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn), | |
7345 | N32_IMM15S (insn)); | |
7346 | insn_type = NDS32_INSN_SHI333; | |
7347 | } | |
7348 | break; | |
7349 | ||
7350 | case N32_OP6_LBI: | |
7351 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7352 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7353 | { | |
7354 | insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7355 | N32_IMM15S (insn)); | |
7356 | insn_type = NDS32_INSN_LBI333; | |
7357 | } | |
7358 | break; | |
7359 | ||
7360 | case N32_OP6_SBI: | |
7361 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) | |
7362 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) | |
7363 | { | |
7364 | insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn), | |
7365 | N32_IMM15S (insn)); | |
7366 | insn_type = NDS32_INSN_SBI333; | |
7367 | } | |
7368 | break; | |
7369 | ||
7370 | case N32_OP6_ALU1: | |
7371 | return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type); | |
7372 | ||
7373 | case N32_OP6_ALU2: | |
7374 | return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type); | |
7375 | ||
7376 | case N32_OP6_BR1: | |
7377 | if (!IS_WITHIN_S (N32_IMM14S (insn), 8)) | |
7378 | goto done; | |
7379 | ||
7380 | if ((insn & __BIT (14)) == 0) | |
7381 | { | |
7382 | /* N32_BR1_BEQ */ | |
7383 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7384 | && N32_RT5 (insn) != REG_R5) | |
7385 | insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7386 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7387 | && N32_RA5 (insn) != REG_R5) | |
7388 | insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7389 | insn_type = NDS32_INSN_BEQS38; | |
7390 | break; | |
7391 | } | |
7392 | else | |
7393 | { | |
7394 | /* N32_BR1_BNE */ | |
7395 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 | |
7396 | && N32_RT5 (insn) != REG_R5) | |
7397 | insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn)); | |
7398 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 | |
7399 | && N32_RA5 (insn) != REG_R5) | |
7400 | insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn)); | |
7401 | insn_type = NDS32_INSN_BNES38; | |
7402 | break; | |
7403 | } | |
7404 | break; | |
7405 | ||
7406 | case N32_OP6_BR2: | |
7407 | switch (N32_BR2_SUB (insn)) | |
7408 | { | |
7409 | case N32_BR2_BEQZ: | |
7410 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7411 | { | |
7412 | insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7413 | insn_type = NDS32_INSN_BEQZ38; | |
7414 | } | |
1c8f6a4d KLC |
7415 | else if (N32_RT5 (insn) == REG_R15 |
7416 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7417 | { |
7418 | insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn)); | |
7419 | insn_type = NDS32_INSN_BEQZS8; | |
7420 | } | |
7421 | break; | |
7422 | ||
7423 | case N32_BR2_BNEZ: | |
7424 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
7425 | { | |
7426 | insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn)); | |
7427 | insn_type = NDS32_INSN_BNEZ38; | |
7428 | } | |
1c8f6a4d KLC |
7429 | else if (N32_RT5 (insn) == REG_R15 |
7430 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) | |
35c08157 KLC |
7431 | { |
7432 | insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn)); | |
7433 | insn_type = NDS32_INSN_BNEZS8; | |
7434 | } | |
7435 | break; | |
7436 | ||
7437 | case N32_BR2_IFCALL: | |
7438 | if (IS_WITHIN_U (N32_IMM16S (insn), 9)) | |
7439 | { | |
7440 | insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn)); | |
7441 | insn_type = NDS32_INSN_IFCALL9; | |
7442 | } | |
7443 | break; | |
7444 | } | |
7445 | break; | |
7446 | ||
7447 | case N32_OP6_JI: | |
7448 | if ((insn & __BIT (24)) == 0) | |
7449 | { | |
7450 | /* N32_JI_J */ | |
7451 | if (IS_WITHIN_S (N32_IMM24S (insn), 8)) | |
7452 | { | |
7453 | insn16 = N16_TYPE8 (J8, N32_IMM24S (insn)); | |
7454 | insn_type = NDS32_INSN_J8; | |
7455 | } | |
7456 | } | |
7457 | break; | |
7458 | ||
7459 | case N32_OP6_JREG: | |
7460 | if (__GF (insn, 8, 2) != 0) | |
7461 | goto done; | |
7462 | ||
7463 | switch (N32_IMMU (insn, 5)) | |
7464 | { | |
7465 | case N32_JREG_JR: | |
7466 | if (N32_JREG_HINT (insn) == 0) | |
7467 | { | |
7468 | /* jr */ | |
7469 | insn16 = N16_TYPE5 (JR5, N32_RB5 (insn)); | |
7470 | insn_type = NDS32_INSN_JR5; | |
7471 | } | |
7472 | else if (N32_JREG_HINT (insn) == 1) | |
7473 | { | |
7474 | /* ret */ | |
7475 | insn16 = N16_TYPE5 (RET5, N32_RB5 (insn)); | |
7476 | insn_type = NDS32_INSN_RET5; | |
7477 | } | |
7478 | else if (N32_JREG_HINT (insn) == 3) | |
7479 | { | |
7480 | /* ifret = mov55 $sp, $sp */ | |
7481 | insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP); | |
7482 | insn_type = NDS32_INSN_IFRET; | |
7483 | } | |
7484 | break; | |
7485 | ||
7486 | case N32_JREG_JRAL: | |
7487 | /* It's convertible when return rt5 is $lp and address | |
7488 | translation is kept. */ | |
7489 | if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0) | |
7490 | { | |
7491 | insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn)); | |
7492 | insn_type = NDS32_INSN_JRAL5; | |
7493 | } | |
7494 | break; | |
7495 | } | |
7496 | break; | |
7497 | ||
7498 | case N32_OP6_MISC: | |
7499 | if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32) | |
7500 | { | |
7501 | /* For v3, swid above 31 are used for ex9.it. */ | |
7502 | insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn)); | |
7503 | insn_type = NDS32_INSN_BREAK16; | |
7504 | } | |
7505 | break; | |
7506 | ||
7507 | default: | |
7508 | /* This instruction has no 16-bit variant. */ | |
7509 | goto done; | |
7510 | } | |
7511 | ||
7512 | done: | |
7513 | /* Bit-15 of insn16 should be set for a valid instruction. */ | |
7514 | if ((insn16 & 0x8000) == 0) | |
7515 | return 0; | |
7516 | ||
7517 | if (pinsn16) | |
7518 | *pinsn16 = insn16; | |
7519 | if (pinsn_type) | |
7520 | *pinsn_type = insn_type; | |
7521 | return 1; | |
7522 | } | |
7523 | ||
7524 | static int | |
7525 | special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16, | |
7526 | Elf_Internal_Rela *reloc) | |
7527 | { | |
7528 | uint16_t insn16 = 0; | |
7529 | ||
7530 | if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0 | |
7531 | || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16)) | |
7532 | return 0; | |
7533 | ||
7534 | if (!N32_IS_RT3 (insn)) | |
7535 | return 0; | |
7536 | ||
7537 | switch (N32_OP6 (insn)) | |
7538 | { | |
7539 | case N32_OP6_LWI: | |
7540 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7541 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); | |
7542 | break; | |
7543 | case N32_OP6_SWI: | |
7544 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) | |
7545 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); | |
7546 | break; | |
7547 | case N32_OP6_HWGP: | |
7548 | if (!IS_WITHIN_U (N32_IMM17S (insn), 7)) | |
7549 | break; | |
7550 | ||
7551 | if (__GF (insn, 17, 3) == 6) | |
7552 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn)); | |
7553 | else if (__GF (insn, 17, 3) == 7) | |
7554 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn)); | |
7555 | break; | |
7556 | } | |
7557 | ||
7558 | if ((insn16 & 0x8000) == 0) | |
7559 | return 0; | |
7560 | ||
7561 | *pinsn16 = insn16; | |
7562 | return 1; | |
7563 | } | |
7564 | ||
7565 | /* Convert a 16-bit instruction to 32-bit one. | |
7566 | INSN16 it the input and PINSN it the point to output. | |
7567 | Return non-zero on successful. Otherwise 0 is returned. */ | |
7568 | ||
7569 | int | |
7570 | nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn) | |
7571 | { | |
7572 | uint32_t insn = 0xffffffff; | |
7573 | unsigned long mach = bfd_get_mach (abfd); | |
7574 | ||
7575 | /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */ | |
7576 | ||
7577 | switch (__GF (insn16, 9, 6)) | |
7578 | { | |
7579 | case 0x4: /* add45 */ | |
1c8f6a4d KLC |
7580 | insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16), |
7581 | N16_RA5 (insn16)); | |
35c08157 KLC |
7582 | goto done; |
7583 | case 0x5: /* sub45 */ | |
1c8f6a4d KLC |
7584 | insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16), |
7585 | N16_RA5 (insn16)); | |
35c08157 KLC |
7586 | goto done; |
7587 | case 0x6: /* addi45 */ | |
1c8f6a4d KLC |
7588 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7589 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7590 | goto done; |
7591 | case 0x7: /* subi45 */ | |
1c8f6a4d KLC |
7592 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
7593 | -N16_IMM5U (insn16)); | |
35c08157 KLC |
7594 | goto done; |
7595 | case 0x8: /* srai45 */ | |
1c8f6a4d KLC |
7596 | insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16), |
7597 | N16_IMM5U (insn16)); | |
35c08157 KLC |
7598 | goto done; |
7599 | case 0x9: /* srli45 */ | |
1c8f6a4d KLC |
7600 | insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16), |
7601 | N16_IMM5U (insn16)); | |
35c08157 | 7602 | goto done; |
35c08157 | 7603 | case 0xa: /* slli333 */ |
1c8f6a4d KLC |
7604 | insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16), |
7605 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7606 | goto done; |
7607 | case 0xc: /* add333 */ | |
1c8f6a4d KLC |
7608 | insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16), |
7609 | N16_RB3 (insn16)); | |
35c08157 KLC |
7610 | goto done; |
7611 | case 0xd: /* sub333 */ | |
1c8f6a4d KLC |
7612 | insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16), |
7613 | N16_RB3 (insn16)); | |
35c08157 KLC |
7614 | goto done; |
7615 | case 0xe: /* addi333 */ | |
1c8f6a4d KLC |
7616 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7617 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7618 | goto done; |
7619 | case 0xf: /* subi333 */ | |
1c8f6a4d KLC |
7620 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
7621 | -N16_IMM3U (insn16)); | |
35c08157 | 7622 | goto done; |
35c08157 | 7623 | case 0x10: /* lwi333 */ |
1c8f6a4d KLC |
7624 | insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7625 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7626 | goto done; |
7627 | case 0x12: /* lhi333 */ | |
1c8f6a4d KLC |
7628 | insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7629 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7630 | goto done; |
7631 | case 0x13: /* lbi333 */ | |
1c8f6a4d KLC |
7632 | insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7633 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7634 | goto done; |
7635 | case 0x11: /* lwi333.bi */ | |
1c8f6a4d KLC |
7636 | insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7637 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7638 | goto done; |
7639 | case 0x14: /* swi333 */ | |
1c8f6a4d KLC |
7640 | insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16), |
7641 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7642 | goto done; |
7643 | case 0x16: /* shi333 */ | |
1c8f6a4d KLC |
7644 | insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16), |
7645 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7646 | goto done; |
7647 | case 0x17: /* sbi333 */ | |
1c8f6a4d KLC |
7648 | insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16), |
7649 | N16_IMM3U (insn16)); | |
35c08157 KLC |
7650 | goto done; |
7651 | case 0x15: /* swi333.bi */ | |
1c8f6a4d KLC |
7652 | insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
7653 | N16_IMM3U (insn16)); | |
35c08157 | 7654 | goto done; |
35c08157 | 7655 | case 0x18: /* addri36.sp */ |
1c8f6a4d KLC |
7656 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP, |
7657 | N16_IMM6U (insn16) << 2); | |
35c08157 | 7658 | goto done; |
35c08157 | 7659 | case 0x19: /* lwi45.fe */ |
1c8f6a4d KLC |
7660 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8, |
7661 | (N16_IMM5U (insn16) - 32)); | |
35c08157 KLC |
7662 | goto done; |
7663 | case 0x1a: /* lwi450 */ | |
7664 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7665 | goto done; | |
7666 | case 0x1b: /* swi450 */ | |
7667 | insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); | |
7668 | goto done; | |
7669 | ||
1c8f6a4d | 7670 | /* These are r15 implied instructions. */ |
35c08157 KLC |
7671 | case 0x30: /* slts45 */ |
7672 | insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7673 | goto done; | |
7674 | case 0x31: /* slt45 */ | |
7675 | insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); | |
7676 | goto done; | |
7677 | case 0x32: /* sltsi45 */ | |
7678 | insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7679 | goto done; | |
7680 | case 0x33: /* slti45 */ | |
7681 | insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); | |
7682 | goto done; | |
7683 | case 0x34: /* beqzs8, bnezs8 */ | |
7684 | if (insn16 & __BIT (8)) | |
7685 | insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16)); | |
7686 | else | |
7687 | insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16)); | |
7688 | goto done; | |
7689 | ||
7690 | case 0x35: /* break16, ex9.it */ | |
7691 | /* Only consider range of v3 break16. */ | |
7692 | insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK); | |
7693 | goto done; | |
7694 | ||
7695 | case 0x3c: /* ifcall9 */ | |
7696 | insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16)); | |
7697 | goto done; | |
7698 | case 0x3d: /* movpi45 */ | |
7699 | insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16); | |
7700 | goto done; | |
7701 | ||
7702 | case 0x3f: /* MISC33 */ | |
1c8f6a4d | 7703 | switch (insn16 & 0x7) |
35c08157 KLC |
7704 | { |
7705 | case 2: /* neg33 */ | |
7706 | insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7707 | break; | |
7708 | case 3: /* not33 */ | |
1c8f6a4d KLC |
7709 | insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16), |
7710 | N16_RA3 (insn16)); | |
35c08157 KLC |
7711 | break; |
7712 | case 4: /* mul33 */ | |
1c8f6a4d KLC |
7713 | insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16), |
7714 | N16_RA3 (insn16)); | |
35c08157 KLC |
7715 | break; |
7716 | case 5: /* xor33 */ | |
1c8f6a4d KLC |
7717 | insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16), |
7718 | N16_RA3 (insn16)); | |
35c08157 KLC |
7719 | break; |
7720 | case 6: /* and33 */ | |
1c8f6a4d KLC |
7721 | insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16), |
7722 | N16_RA3 (insn16)); | |
35c08157 KLC |
7723 | break; |
7724 | case 7: /* or33 */ | |
1c8f6a4d KLC |
7725 | insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16), |
7726 | N16_RA3 (insn16)); | |
35c08157 KLC |
7727 | break; |
7728 | } | |
7729 | goto done; | |
7730 | ||
1c8f6a4d | 7731 | case 0xb: |
35c08157 KLC |
7732 | switch (insn16 & 0x7) |
7733 | { | |
7734 | case 0: /* zeb33 */ | |
7735 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff); | |
7736 | break; | |
7737 | case 1: /* zeh33 */ | |
7738 | insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7739 | break; | |
7740 | case 2: /* seb33 */ | |
7741 | insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7742 | break; | |
7743 | case 3: /* seh33 */ | |
7744 | insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); | |
7745 | break; | |
7746 | case 4: /* xlsb33 */ | |
7747 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1); | |
7748 | break; | |
7749 | case 5: /* x11b33 */ | |
7750 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff); | |
7751 | break; | |
7752 | case 6: /* bmski33 */ | |
7753 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7754 | 1 << __GF (insn16, 3, 3)); |
35c08157 KLC |
7755 | break; |
7756 | case 7: /* fexti33 */ | |
7757 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), | |
1c8f6a4d | 7758 | (1 << (__GF (insn16, 3, 3) + 1)) - 1); |
35c08157 KLC |
7759 | break; |
7760 | } | |
7761 | goto done; | |
7762 | } | |
7763 | ||
7764 | switch (__GF (insn16, 10, 5)) | |
7765 | { | |
7766 | case 0x0: /* mov55 or ifret16 */ | |
7767 | if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP | |
7768 | && N16_RT5 (insn16) == N16_RA5 (insn16)) | |
1c8f6a4d | 7769 | insn = N32_JREG (JR, 0, 0, 0, 3); |
35c08157 | 7770 | else |
1c8f6a4d | 7771 | insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0); |
35c08157 KLC |
7772 | goto done; |
7773 | case 0x1: /* movi55 */ | |
7774 | insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16)); | |
7775 | goto done; | |
7776 | case 0x1b: /* addi10s (V2) */ | |
7777 | insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16)); | |
7778 | goto done; | |
7779 | } | |
7780 | ||
7781 | switch (__GF (insn16, 11, 4)) | |
7782 | { | |
7783 | case 0x7: /* lwi37.fp/swi37.fp */ | |
7784 | if (insn16 & __BIT (7)) /* swi37.fp */ | |
7785 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); | |
7786 | else /* lwi37.fp */ | |
7787 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); | |
7788 | goto done; | |
7789 | case 0x8: /* beqz38 */ | |
7790 | insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7791 | goto done; | |
7792 | case 0x9: /* bnez38 */ | |
7793 | insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16)); | |
7794 | goto done; | |
7795 | case 0xa: /* beqs38/j8, implied r5 */ | |
7796 | if (N16_RT38 (insn16) == 5) | |
7797 | insn = N32_JI (J, N16_IMM8S (insn16)); | |
7798 | else | |
7799 | insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7800 | goto done; | |
7801 | case 0xb: /* bnes38 and others */ | |
7802 | if (N16_RT38 (insn16) == 5) | |
7803 | { | |
7804 | switch (__GF (insn16, 5, 3)) | |
7805 | { | |
7806 | case 0: /* jr5 */ | |
7807 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0); | |
7808 | break; | |
7809 | case 4: /* ret5 */ | |
7810 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1); | |
7811 | break; | |
7812 | case 1: /* jral5 */ | |
7813 | insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0); | |
7814 | break; | |
7815 | case 2: /* ex9.it imm5 */ | |
7816 | /* ex9.it had no 32-bit variantl. */ | |
7817 | break; | |
7818 | case 5: /* add5.pc */ | |
7819 | /* add5.pc had no 32-bit variantl. */ | |
7820 | break; | |
7821 | } | |
7822 | } | |
7823 | else /* bnes38 */ | |
7824 | insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); | |
7825 | goto done; | |
7826 | case 0xe: /* lwi37/swi37 */ | |
7827 | if (insn16 & (1 << 7)) /* swi37.sp */ | |
7828 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7829 | else /* lwi37.sp */ | |
7830 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); | |
7831 | goto done; | |
7832 | } | |
7833 | ||
7834 | done: | |
7835 | if (insn & 0x80000000) | |
7836 | return 0; | |
7837 | ||
7838 | if (pinsn) | |
7839 | *pinsn = insn; | |
7840 | return 1; | |
7841 | } | |
7842 | \f | |
7843 | static bfd_boolean | |
7844 | is_sda_access_insn (unsigned long insn) | |
7845 | { | |
7846 | switch (N32_OP6 (insn)) | |
7847 | { | |
7848 | case N32_OP6_LWI: | |
7849 | case N32_OP6_LHI: | |
7850 | case N32_OP6_LHSI: | |
7851 | case N32_OP6_LBI: | |
7852 | case N32_OP6_LBSI: | |
7853 | case N32_OP6_SWI: | |
7854 | case N32_OP6_SHI: | |
7855 | case N32_OP6_SBI: | |
7856 | case N32_OP6_LWC: | |
7857 | case N32_OP6_LDC: | |
7858 | case N32_OP6_SWC: | |
7859 | case N32_OP6_SDC: | |
7860 | return TRUE; | |
7861 | default: | |
7862 | ; | |
7863 | } | |
7864 | return FALSE; | |
7865 | } | |
7866 | ||
7867 | static unsigned long | |
7868 | turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn) | |
7869 | { | |
7870 | uint32_t oinsn = 0; | |
7871 | ||
7872 | switch (type) | |
7873 | { | |
7874 | case R_NDS32_GOT_LO12: | |
7875 | case R_NDS32_GOTOFF_LO12: | |
7876 | case R_NDS32_PLTREL_LO12: | |
7877 | case R_NDS32_PLT_GOTREL_LO12: | |
7878 | case R_NDS32_LO12S0_RELA: | |
7879 | switch (N32_OP6 (insn)) | |
7880 | { | |
7881 | case N32_OP6_LBI: | |
7882 | /* lbi.gp */ | |
7883 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
7884 | break; | |
7885 | case N32_OP6_LBSI: | |
7886 | /* lbsi.gp */ | |
7887 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); | |
7888 | break; | |
7889 | case N32_OP6_SBI: | |
7890 | /* sbi.gp */ | |
7891 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
7892 | break; | |
7893 | case N32_OP6_ORI: | |
7894 | /* addi.gp */ | |
7895 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
7896 | break; | |
7897 | } | |
7898 | break; | |
7899 | ||
7900 | case R_NDS32_LO12S1_RELA: | |
7901 | switch (N32_OP6 (insn)) | |
7902 | { | |
7903 | case N32_OP6_LHI: | |
7904 | /* lhi.gp */ | |
7905 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
7906 | break; | |
7907 | case N32_OP6_LHSI: | |
7908 | /* lhsi.gp */ | |
7909 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); | |
7910 | break; | |
7911 | case N32_OP6_SHI: | |
7912 | /* shi.gp */ | |
7913 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); | |
7914 | break; | |
7915 | } | |
7916 | break; | |
7917 | ||
7918 | case R_NDS32_LO12S2_RELA: | |
7919 | switch (N32_OP6 (insn)) | |
7920 | { | |
7921 | case N32_OP6_LWI: | |
7922 | /* lwi.gp */ | |
7923 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
7924 | break; | |
7925 | case N32_OP6_SWI: | |
7926 | /* swi.gp */ | |
7927 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
7928 | break; | |
7929 | } | |
7930 | break; | |
7931 | ||
7932 | case R_NDS32_LO12S2_DP_RELA: | |
7933 | case R_NDS32_LO12S2_SP_RELA: | |
7934 | oinsn = (insn & 0x7ff07000) | (REG_GP << 15); | |
7935 | break; | |
7936 | } | |
7937 | ||
7938 | if (oinsn) | |
7939 | *pinsn = oinsn; | |
7940 | ||
7941 | return oinsn != 0; | |
7942 | } | |
7943 | ||
7944 | /* Linker hasn't found the correct merge section for non-section symbol | |
7945 | in relax time, this work is left to the function elf_link_input_bfd(). | |
7946 | So for non-section symbol, _bfd_merged_section_offset is also needed | |
7947 | to find the correct symbol address. */ | |
7948 | ||
7949 | static bfd_vma | |
7950 | nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym, | |
7951 | asection **psec, Elf_Internal_Rela *rel) | |
7952 | { | |
7953 | asection *sec = *psec; | |
7954 | bfd_vma relocation; | |
7955 | ||
7956 | relocation = (sec->output_section->vma | |
7957 | + sec->output_offset + sym->st_value); | |
7958 | if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE) | |
7959 | { | |
7960 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
7961 | rel->r_addend = | |
7962 | _bfd_merged_section_offset (abfd, psec, | |
7963 | elf_section_data (sec)->sec_info, | |
7964 | sym->st_value + rel->r_addend); | |
7965 | else | |
7966 | rel->r_addend = | |
7967 | _bfd_merged_section_offset (abfd, psec, | |
7968 | elf_section_data (sec)->sec_info, | |
7969 | sym->st_value) + rel->r_addend; | |
7970 | ||
7971 | if (sec != *psec) | |
7972 | { | |
7973 | /* If we have changed the section, and our original section is | |
7974 | marked with SEC_EXCLUDE, it means that the original | |
7975 | SEC_MERGE section has been completely subsumed in some | |
7976 | other SEC_MERGE section. In this case, we need to leave | |
7977 | some info around for --emit-relocs. */ | |
7978 | if ((sec->flags & SEC_EXCLUDE) != 0) | |
7979 | sec->kept_section = *psec; | |
7980 | sec = *psec; | |
7981 | } | |
7982 | rel->r_addend -= relocation; | |
7983 | rel->r_addend += sec->output_section->vma + sec->output_offset; | |
7984 | } | |
7985 | return relocation; | |
7986 | } | |
7987 | ||
7988 | static bfd_vma | |
7989 | calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel, | |
7990 | Elf_Internal_Sym *isymbuf, | |
7991 | Elf_Internal_Shdr *symtab_hdr) | |
7992 | { | |
7993 | bfd_signed_vma foff; | |
7994 | bfd_vma symval, addend; | |
7995 | Elf_Internal_Rela irel_fn; | |
7996 | Elf_Internal_Sym *isym; | |
7997 | asection *sym_sec; | |
7998 | ||
7999 | /* Get the value of the symbol referred to by the reloc. */ | |
8000 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
8001 | { | |
8002 | /* A local symbol. */ | |
8003 | isym = isymbuf + ELF32_R_SYM (irel->r_info); | |
8004 | ||
8005 | if (isym->st_shndx == SHN_UNDEF) | |
8006 | sym_sec = bfd_und_section_ptr; | |
8007 | else if (isym->st_shndx == SHN_ABS) | |
8008 | sym_sec = bfd_abs_section_ptr; | |
8009 | else if (isym->st_shndx == SHN_COMMON) | |
8010 | sym_sec = bfd_com_section_ptr; | |
8011 | else | |
8012 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
8013 | memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela)); | |
8014 | symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn); | |
8015 | addend = irel_fn.r_addend; | |
8016 | } | |
8017 | else | |
8018 | { | |
8019 | unsigned long indx; | |
8020 | struct elf_link_hash_entry *h; | |
8021 | ||
8022 | /* An external symbol. */ | |
8023 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
8024 | h = elf_sym_hashes (abfd)[indx]; | |
8025 | BFD_ASSERT (h != NULL); | |
8026 | ||
8027 | while (h->root.type == bfd_link_hash_indirect | |
8028 | || h->root.type == bfd_link_hash_warning) | |
8029 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8030 | ||
8031 | if (h->root.type != bfd_link_hash_defined | |
8032 | && h->root.type != bfd_link_hash_defweak) | |
8033 | /* This appears to be a reference to an undefined | |
8034 | symbol. Just ignore it--it will be caught by the | |
8035 | regular reloc processing. */ | |
8036 | return 0; | |
8037 | ||
8038 | if (h->root.u.def.section->flags & SEC_MERGE) | |
8039 | { | |
8040 | sym_sec = h->root.u.def.section; | |
8041 | symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data | |
8042 | (sym_sec)->sec_info, h->root.u.def.value); | |
8043 | symval = symval + sym_sec->output_section->vma | |
8044 | + sym_sec->output_offset; | |
8045 | } | |
8046 | else | |
8047 | symval = (h->root.u.def.value | |
8048 | + h->root.u.def.section->output_section->vma | |
8049 | + h->root.u.def.section->output_offset); | |
8050 | addend = irel->r_addend; | |
8051 | } | |
8052 | ||
8053 | foff = symval + addend; | |
8054 | ||
8055 | return foff; | |
8056 | } | |
8057 | ||
8058 | static bfd_vma | |
8059 | calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info, | |
8060 | Elf_Internal_Rela *irel, | |
8061 | Elf_Internal_Shdr *symtab_hdr) | |
8062 | { | |
8063 | int symndx; | |
8064 | bfd_vma *local_got_offsets; | |
8065 | /* Get the value of the symbol referred to by the reloc. */ | |
8066 | struct elf_link_hash_entry *h; | |
8067 | struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info); | |
8068 | ||
8069 | /* An external symbol. */ | |
8070 | symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
8071 | h = elf_sym_hashes (abfd)[symndx]; | |
8072 | while (h->root.type == bfd_link_hash_indirect | |
8073 | || h->root.type == bfd_link_hash_warning) | |
8074 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
8075 | ||
8076 | if (symndx >= 0) | |
8077 | { | |
8078 | BFD_ASSERT (h != NULL); | |
8079 | return htab->sgot->output_section->vma + htab->sgot->output_offset | |
8080 | + h->got.offset; | |
8081 | } | |
8082 | else | |
8083 | { | |
8084 | local_got_offsets = elf_local_got_offsets (abfd); | |
8085 | BFD_ASSERT (local_got_offsets != NULL); | |
8086 | return htab->sgot->output_section->vma + htab->sgot->output_offset | |
8087 | + local_got_offsets[ELF32_R_SYM (irel->r_info)]; | |
8088 | } | |
8089 | ||
8090 | /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */ | |
8091 | /* The check of h->root.type is passed. */ | |
8092 | } | |
8093 | ||
8094 | static int | |
8095 | is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED, | |
8096 | asection *sec, Elf_Internal_Rela *rel) | |
8097 | { | |
8098 | bfd_byte *contents; | |
8099 | unsigned short insn16; | |
8100 | ||
8101 | if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG)) | |
8102 | return FALSE; | |
8103 | contents = elf_section_data (sec)->this_hdr.contents; | |
8104 | insn16 = bfd_getb16 (contents + rel->r_offset); | |
8105 | if (insn16 == NDS32_NOP16) | |
8106 | return TRUE; | |
8107 | return FALSE; | |
8108 | } | |
8109 | ||
8110 | /* It checks whether the instruction could be converted to | |
8111 | 16-bit form and returns the converted one. | |
8112 | ||
8113 | `internal_relocs' is supposed to be sorted. */ | |
8114 | ||
8115 | static int | |
8116 | is_convert_32_to_16 (bfd *abfd, asection *sec, | |
8117 | Elf_Internal_Rela *reloc, | |
8118 | Elf_Internal_Rela *internal_relocs, | |
8119 | Elf_Internal_Rela *irelend, | |
8120 | uint16_t *insn16) | |
8121 | { | |
8122 | #define NORMAL_32_TO_16 (1 << 0) | |
8123 | #define SPECIAL_32_TO_16 (1 << 1) | |
8124 | bfd_byte *contents = NULL; | |
8125 | bfd_signed_vma off; | |
8126 | bfd_vma mem_addr; | |
8127 | uint32_t insn = 0; | |
8128 | Elf_Internal_Rela *pc_rel; | |
8129 | int pic_ext_target = 0; | |
8130 | Elf_Internal_Shdr *symtab_hdr; | |
8131 | Elf_Internal_Sym *isymbuf = NULL; | |
8132 | int convert_type; | |
8133 | bfd_vma offset; | |
8134 | ||
8135 | if (reloc->r_offset + 4 > sec->size) | |
8136 | return FALSE; | |
8137 | ||
8138 | offset = reloc->r_offset; | |
8139 | ||
8140 | if (!nds32_get_section_contents (abfd, sec, &contents)) | |
8141 | return FALSE; | |
8142 | insn = bfd_getb32 (contents + offset); | |
8143 | ||
8144 | if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL)) | |
8145 | convert_type = NORMAL_32_TO_16; | |
8146 | else if (special_convert_32_to_16 (insn, insn16, reloc)) | |
8147 | convert_type = SPECIAL_32_TO_16; | |
8148 | else | |
8149 | return FALSE; | |
8150 | ||
8151 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8152 | if (!nds32_get_local_syms (abfd, sec, &isymbuf)) | |
8153 | return FALSE; | |
8154 | ||
8155 | /* Find the first relocation of the same relocation-type, | |
8156 | so we iteratie them forward. */ | |
8157 | pc_rel = reloc; | |
1c8f6a4d | 8158 | while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset) |
35c08157 KLC |
8159 | pc_rel--; |
8160 | ||
8161 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
8162 | { | |
8163 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
8164 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
8165 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA | |
8166 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
8167 | { | |
8168 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
8169 | &pic_ext_target); | |
1c8f6a4d KLC |
8170 | if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1 |
8171 | || off == 0) | |
35c08157 KLC |
8172 | return FALSE; |
8173 | break; | |
8174 | } | |
8175 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
8176 | { | |
8177 | /* movi => movi55 */ | |
1c8f6a4d KLC |
8178 | mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf, |
8179 | symtab_hdr); | |
8180 | /* mem_addr is unsigned, but the value should | |
8181 | be between [-16, 15]. */ | |
35c08157 KLC |
8182 | if ((mem_addr + 0x10) >> 5) |
8183 | return FALSE; | |
8184 | break; | |
8185 | } | |
1c8f6a4d KLC |
8186 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20) |
8187 | || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12)) | |
8188 | { | |
8189 | /* It never happen movi to movi55 for R_NDS32_TLS_LE_20, | |
8190 | because it can be relaxed to addi for TLS_LE_ADD. */ | |
8191 | return FALSE; | |
8192 | } | |
35c08157 KLC |
8193 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA |
8194 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
8195 | && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) | |
8196 | && convert_type == SPECIAL_32_TO_16) | |
8197 | { | |
8198 | /* fp-as-gp | |
8199 | We've selected a best fp-base for this access, so we can | |
8200 | always resolve it anyway. Do nothing. */ | |
8201 | break; | |
8202 | } | |
8203 | else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE | |
8204 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT)) | |
8205 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY) | |
8206 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16)) | |
8207 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE) | |
8208 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA))) | |
8209 | { | |
1c8f6a4d KLC |
8210 | /* Prevent unresolved addi instruction translate |
8211 | to addi45 or addi333. */ | |
35c08157 KLC |
8212 | return FALSE; |
8213 | } | |
1c8f6a4d KLC |
8214 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
8215 | { | |
8216 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, | |
8217 | &pic_ext_target); | |
8218 | if (off >= ACCURATE_U9BIT_S1 || off <= 0) | |
8219 | return FALSE; | |
8220 | break; | |
8221 | } | |
35c08157 KLC |
8222 | } |
8223 | ||
8224 | return TRUE; | |
8225 | } | |
8226 | ||
8227 | static void | |
8228 | nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents, | |
8229 | Elf_Internal_Rela *reloc, | |
8230 | Elf_Internal_Rela *internal_relocs, | |
8231 | Elf_Internal_Rela *irelend, | |
8232 | unsigned short insn16) | |
8233 | { | |
8234 | Elf_Internal_Rela *pc_rel; | |
8235 | bfd_vma offset; | |
8236 | ||
8237 | offset = reloc->r_offset; | |
8238 | bfd_putb16 (insn16, contents + offset); | |
8239 | /* Find the first relocation of the same relocation-type, | |
8240 | so we iteratie them forward. */ | |
8241 | pc_rel = reloc; | |
8242 | while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset) | |
8243 | pc_rel--; | |
8244 | ||
8245 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) | |
8246 | { | |
8247 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA | |
8248 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA | |
8249 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA) | |
8250 | { | |
8251 | pc_rel->r_info = | |
8252 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA); | |
8253 | } | |
8254 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) | |
8255 | pc_rel->r_info = | |
8256 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL); | |
8257 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) | |
8258 | pc_rel->r_info = | |
8259 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA); | |
8260 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA | |
8261 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) | |
8262 | pc_rel->r_info = | |
8263 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA); | |
1c8f6a4d KLC |
8264 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
8265 | pc_rel->r_info = | |
8266 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
8267 | } |
8268 | } | |
8269 | ||
8270 | /* Find a relocation of type specified by `reloc_type' | |
8271 | of the same r_offset with reloc. | |
8272 | If not found, return irelend. | |
8273 | ||
8274 | Assuming relocations are sorted by r_offset, | |
8275 | we find the relocation from `reloc' backward untill relocs, | |
8276 | or find it from `reloc' forward untill irelend. */ | |
8277 | ||
8278 | static Elf_Internal_Rela * | |
8279 | find_relocs_at_address (Elf_Internal_Rela *reloc, | |
8280 | Elf_Internal_Rela *relocs, | |
8281 | Elf_Internal_Rela *irelend, | |
8282 | enum elf_nds32_reloc_type reloc_type) | |
8283 | { | |
8284 | Elf_Internal_Rela *rel_t; | |
8285 | ||
8286 | /* Find backward. */ | |
8287 | for (rel_t = reloc; | |
8288 | rel_t >= relocs && rel_t->r_offset == reloc->r_offset; | |
8289 | rel_t--) | |
8290 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8291 | return rel_t; | |
8292 | ||
1c8f6a4d | 8293 | /* We didn't find it backward. Try find it forward. */ |
35c08157 KLC |
8294 | for (rel_t = reloc; |
8295 | rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8296 | rel_t++) | |
8297 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8298 | return rel_t; | |
8299 | ||
8300 | return irelend; | |
8301 | } | |
8302 | ||
8303 | /* Find a relocation of specified type and offset. | |
8304 | `reloc' is just a refence point to find a relocation at specified offset. | |
8305 | If not found, return irelend. | |
8306 | ||
8307 | Assuming relocations are sorted by r_offset, | |
8308 | we find the relocation from `reloc' backward untill relocs, | |
8309 | or find it from `reloc' forward untill irelend. */ | |
8310 | ||
8311 | static Elf_Internal_Rela * | |
8312 | find_relocs_at_address_addr (Elf_Internal_Rela *reloc, | |
8313 | Elf_Internal_Rela *relocs, | |
8314 | Elf_Internal_Rela *irelend, | |
8315 | unsigned char reloc_type, | |
8316 | bfd_vma offset_p) | |
8317 | { | |
8318 | Elf_Internal_Rela *rel_t = NULL; | |
8319 | ||
8320 | /* First, we try to find a relocation of offset `offset_p', | |
8321 | and then we use find_relocs_at_address to find specific type. */ | |
8322 | ||
8323 | if (reloc->r_offset > offset_p) | |
8324 | { | |
8325 | /* Find backward. */ | |
8326 | for (rel_t = reloc; | |
8327 | rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--) | |
8328 | /* Do nothing. */; | |
8329 | } | |
8330 | else if (reloc->r_offset < offset_p) | |
8331 | { | |
8332 | /* Find forward. */ | |
8333 | for (rel_t = reloc; | |
8334 | rel_t < irelend && rel_t->r_offset < offset_p; rel_t++) | |
8335 | /* Do nothing. */; | |
8336 | } | |
8337 | else | |
8338 | rel_t = reloc; | |
8339 | ||
8340 | /* Not found? */ | |
8341 | if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p) | |
8342 | return irelend; | |
8343 | ||
8344 | return find_relocs_at_address (rel_t, relocs, irelend, reloc_type); | |
8345 | } | |
8346 | ||
8347 | static bfd_boolean | |
8348 | nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc, | |
8349 | Elf_Internal_Rela *internal_relocs, | |
8350 | Elf_Internal_Rela *irelend, | |
8351 | unsigned char reloc_type) | |
8352 | { | |
8353 | Elf_Internal_Rela *rel_t; | |
8354 | ||
8355 | for (rel_t = reloc; | |
8356 | rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset; | |
8357 | rel_t--) | |
8358 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8359 | { | |
8360 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8361 | && rel_t->r_addend == reloc->r_addend) | |
8362 | continue; | |
8363 | return TRUE; | |
8364 | } | |
8365 | ||
8366 | for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset; | |
8367 | rel_t++) | |
8368 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) | |
8369 | { | |
8370 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) | |
8371 | && rel_t->r_addend == reloc->r_addend) | |
8372 | continue; | |
8373 | return TRUE; | |
8374 | } | |
8375 | ||
8376 | return FALSE; | |
8377 | } | |
8378 | ||
8379 | typedef struct nds32_elf_blank nds32_elf_blank_t; | |
8380 | struct nds32_elf_blank | |
8381 | { | |
8382 | /* Where the blank begins. */ | |
8383 | bfd_vma offset; | |
8384 | /* The size of the blank. */ | |
8385 | bfd_vma size; | |
8386 | /* The accumulative size before this blank. */ | |
8387 | bfd_vma total_size; | |
8388 | nds32_elf_blank_t *next; | |
8389 | nds32_elf_blank_t *prev; | |
8390 | }; | |
8391 | ||
8392 | static nds32_elf_blank_t *blank_free_list = NULL; | |
8393 | ||
8394 | static nds32_elf_blank_t * | |
8395 | create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p) | |
8396 | { | |
8397 | nds32_elf_blank_t *blank_t; | |
8398 | ||
8399 | if (blank_free_list) | |
8400 | { | |
8401 | blank_t = blank_free_list; | |
8402 | blank_free_list = blank_free_list->next; | |
8403 | } | |
8404 | else | |
8405 | blank_t = bfd_malloc (sizeof (nds32_elf_blank_t)); | |
8406 | ||
8407 | if (blank_t == NULL) | |
8408 | return NULL; | |
8409 | ||
8410 | blank_t->offset = offset_p; | |
8411 | blank_t->size = size_p; | |
8412 | blank_t->total_size = 0; | |
8413 | blank_t->next = NULL; | |
8414 | blank_t->prev = NULL; | |
8415 | ||
8416 | return blank_t; | |
8417 | } | |
8418 | ||
8419 | static void | |
8420 | remove_nds32_elf_blank (nds32_elf_blank_t *blank_p) | |
8421 | { | |
8422 | if (blank_free_list) | |
8423 | { | |
8424 | blank_free_list->prev = blank_p; | |
8425 | blank_p->next = blank_free_list; | |
8426 | } | |
8427 | else | |
8428 | blank_p->next = NULL; | |
8429 | ||
8430 | blank_p->prev = NULL; | |
8431 | blank_free_list = blank_p; | |
8432 | } | |
8433 | ||
8434 | static void | |
8435 | clean_nds32_elf_blank (void) | |
8436 | { | |
8437 | nds32_elf_blank_t *blank_t; | |
8438 | ||
8439 | while (blank_free_list) | |
8440 | { | |
8441 | blank_t = blank_free_list; | |
8442 | blank_free_list = blank_free_list->next; | |
8443 | free (blank_t); | |
8444 | } | |
8445 | } | |
8446 | ||
8447 | static nds32_elf_blank_t * | |
8448 | search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr) | |
8449 | { | |
8450 | nds32_elf_blank_t *blank_t; | |
8451 | ||
8452 | if (!blank_p) | |
8453 | return NULL; | |
8454 | blank_t = blank_p; | |
8455 | ||
8456 | while (blank_t && addr < blank_t->offset) | |
8457 | blank_t = blank_t->prev; | |
8458 | while (blank_t && blank_t->next && addr >= blank_t->next->offset) | |
8459 | blank_t = blank_t->next; | |
8460 | ||
8461 | return blank_t; | |
8462 | } | |
8463 | ||
8464 | static bfd_vma | |
8465 | get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8466 | int overwrite) | |
8467 | { | |
8468 | nds32_elf_blank_t *blank_t; | |
8469 | ||
8470 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8471 | if (!blank_t) | |
8472 | return 0; | |
8473 | ||
8474 | if (overwrite) | |
8475 | *blank_p = blank_t; | |
8476 | ||
8477 | if (addr < blank_t->offset + blank_t->size) | |
8478 | return blank_t->total_size + (addr - blank_t->offset); | |
8479 | else | |
8480 | return blank_t->total_size + blank_t->size; | |
8481 | } | |
8482 | ||
8483 | static bfd_boolean | |
8484 | insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len) | |
8485 | { | |
8486 | nds32_elf_blank_t *blank_t, *blank_t2; | |
8487 | ||
8488 | if (!*blank_p) | |
8489 | { | |
8490 | *blank_p = create_nds32_elf_blank (addr, len); | |
8491 | return *blank_p ? TRUE : FALSE; | |
8492 | } | |
8493 | ||
8494 | blank_t = search_nds32_elf_blank (*blank_p, addr); | |
8495 | ||
8496 | if (blank_t == NULL) | |
8497 | { | |
8498 | blank_t = create_nds32_elf_blank (addr, len); | |
8499 | if (!blank_t) | |
8500 | return FALSE; | |
8501 | while ((*blank_p)->prev != NULL) | |
8502 | *blank_p = (*blank_p)->prev; | |
8503 | blank_t->next = *blank_p; | |
8504 | (*blank_p)->prev = blank_t; | |
8505 | (*blank_p) = blank_t; | |
8506 | return TRUE; | |
8507 | } | |
8508 | ||
8509 | if (addr < blank_t->offset + blank_t->size) | |
8510 | { | |
8511 | if (addr > blank_t->offset + blank_t->size) | |
8512 | blank_t->size = addr - blank_t->offset; | |
8513 | } | |
8514 | else | |
8515 | { | |
8516 | blank_t2 = create_nds32_elf_blank (addr, len); | |
8517 | if (!blank_t2) | |
8518 | return FALSE; | |
8519 | if (blank_t->next) | |
8520 | { | |
8521 | blank_t->next->prev = blank_t2; | |
8522 | blank_t2->next = blank_t->next; | |
8523 | } | |
8524 | blank_t2->prev = blank_t; | |
8525 | blank_t->next = blank_t2; | |
8526 | *blank_p = blank_t2; | |
8527 | } | |
8528 | ||
8529 | return TRUE; | |
8530 | } | |
8531 | ||
8532 | static bfd_boolean | |
8533 | insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr, | |
8534 | bfd_vma len) | |
8535 | { | |
8536 | nds32_elf_blank_t *blank_t; | |
8537 | ||
8538 | if (!insert_nds32_elf_blank (blank_p, addr, len)) | |
8539 | return FALSE; | |
8540 | ||
8541 | blank_t = *blank_p; | |
8542 | ||
8543 | if (!blank_t->prev) | |
8544 | { | |
8545 | blank_t->total_size = 0; | |
8546 | blank_t = blank_t->next; | |
8547 | } | |
8548 | ||
8549 | while (blank_t) | |
8550 | { | |
8551 | blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size; | |
8552 | blank_t = blank_t->next; | |
8553 | } | |
8554 | ||
8555 | return TRUE; | |
8556 | } | |
8557 | ||
8558 | static void | |
8559 | calc_nds32_blank_total (nds32_elf_blank_t *blank_p) | |
8560 | { | |
8561 | nds32_elf_blank_t *blank_t; | |
8562 | bfd_vma total_size = 0; | |
8563 | ||
8564 | if (!blank_p) | |
8565 | return; | |
8566 | ||
8567 | blank_t = blank_p; | |
8568 | while (blank_t->prev) | |
8569 | blank_t = blank_t->prev; | |
8570 | while (blank_t) | |
8571 | { | |
8572 | blank_t->total_size = total_size; | |
8573 | total_size += blank_t->size; | |
8574 | blank_t = blank_t->next; | |
8575 | } | |
8576 | } | |
8577 | ||
8578 | static bfd_boolean | |
8579 | nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec, | |
8580 | nds32_elf_blank_t *blank_p) | |
8581 | { | |
8582 | Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */ | |
1c8f6a4d | 8583 | Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */ |
35c08157 KLC |
8584 | Elf_Internal_Sym *isymend; /* Symbol entry iterator. */ |
8585 | unsigned int sec_shndx; /* The section the be relaxed. */ | |
8586 | bfd_byte *contents; /* Contents data of iterating section. */ | |
8587 | Elf_Internal_Rela *internal_relocs; | |
8588 | Elf_Internal_Rela *irel; | |
8589 | Elf_Internal_Rela *irelend; | |
8590 | struct elf_link_hash_entry **sym_hashes; | |
8591 | struct elf_link_hash_entry **end_hashes; | |
8592 | unsigned int symcount; | |
8593 | asection *sect; | |
8594 | nds32_elf_blank_t *blank_t; | |
8595 | nds32_elf_blank_t *blank_t2; | |
8596 | nds32_elf_blank_t *blank_head; | |
8597 | ||
8598 | blank_head = blank_t = blank_p; | |
8599 | while (blank_head->prev != NULL) | |
8600 | blank_head = blank_head->prev; | |
8601 | while (blank_t->next != NULL) | |
8602 | blank_t = blank_t->next; | |
8603 | ||
8604 | if (blank_t->offset + blank_t->size <= sec->size) | |
8605 | { | |
8606 | blank_t->next = create_nds32_elf_blank (sec->size + 4, 0); | |
8607 | blank_t->next->prev = blank_t; | |
8608 | } | |
8609 | if (blank_head->offset > 0) | |
8610 | { | |
8611 | blank_head->prev = create_nds32_elf_blank (0, 0); | |
8612 | blank_head->prev->next = blank_head; | |
8613 | blank_head = blank_head->prev; | |
8614 | } | |
8615 | ||
8616 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
8617 | ||
8618 | /* The deletion must stop at the next ALIGN reloc for an alignment | |
8619 | power larger than the number of bytes we are deleting. */ | |
8620 | ||
8621 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8622 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
8623 | return FALSE; | |
8624 | ||
8625 | if (isym == NULL) | |
8626 | { | |
8627 | isym = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8628 | symtab_hdr->sh_info, 0, NULL, NULL, NULL); | |
8629 | symtab_hdr->contents = (bfd_byte *) isym; | |
8630 | } | |
8631 | ||
8632 | if (isym == NULL || symtab_hdr->sh_info == 0) | |
8633 | return FALSE; | |
8634 | ||
8635 | blank_t = blank_head; | |
8636 | calc_nds32_blank_total (blank_head); | |
8637 | ||
8638 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
8639 | { | |
8640 | /* Adjust all the relocs. */ | |
8641 | ||
8642 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
8643 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL, | |
8644 | TRUE /* keep_memory */); | |
8645 | irelend = internal_relocs + sect->reloc_count; | |
8646 | ||
8647 | blank_t = blank_head; | |
8648 | blank_t2 = blank_head; | |
8649 | ||
8650 | if (!(sect->flags & SEC_RELOC)) | |
8651 | continue; | |
8652 | ||
8653 | nds32_get_section_contents (abfd, sect, &contents); | |
8654 | ||
8655 | for (irel = internal_relocs; irel < irelend; irel++) | |
8656 | { | |
8657 | bfd_vma raddr; | |
8658 | ||
8659 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8 | |
8660 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32 | |
8661 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8662 | { | |
8663 | unsigned long val = 0; | |
1c8f6a4d KLC |
8664 | unsigned long mask; |
8665 | long before, between; | |
8666 | long offset; | |
35c08157 KLC |
8667 | |
8668 | switch (ELF32_R_TYPE (irel->r_info)) | |
8669 | { | |
8670 | case R_NDS32_DIFF8: | |
1c8f6a4d | 8671 | offset = bfd_get_8 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8672 | break; |
8673 | case R_NDS32_DIFF16: | |
1c8f6a4d | 8674 | offset = bfd_get_16 (abfd, contents + irel->r_offset); |
35c08157 KLC |
8675 | break; |
8676 | case R_NDS32_DIFF32: | |
8677 | val = bfd_get_32 (abfd, contents + irel->r_offset); | |
1c8f6a4d KLC |
8678 | /* Get the signed bit and mask for the high part. The |
8679 | gcc will alarm when right shift 32-bit since the | |
8680 | type size of long may be 32-bit. */ | |
8681 | mask = 0 - (val >> 31); | |
8682 | if (mask) | |
8683 | offset = (val | (mask - 0xffffffff)); | |
8684 | else | |
8685 | offset = val; | |
35c08157 KLC |
8686 | break; |
8687 | default: | |
8688 | BFD_ASSERT (0); | |
8689 | } | |
8690 | ||
8691 | /* DIFF value | |
8692 | 0 |encoded in location| | |
8693 | |------------|-------------------|--------- | |
8694 | sym+off(addend) | |
8695 | -- before ---| ***************** | |
8696 | --------------------- between ---| | |
8697 | ||
1c8f6a4d KLC |
8698 | We only care how much data are relax between DIFF, |
8699 | marked as ***. */ | |
35c08157 KLC |
8700 | |
8701 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8702 | between = get_nds32_elf_blank_total (&blank_t, |
8703 | irel->r_addend + offset, 0); | |
35c08157 KLC |
8704 | if (between == before) |
8705 | goto done_adjust_diff; | |
8706 | ||
8707 | switch (ELF32_R_TYPE (irel->r_info)) | |
8708 | { | |
8709 | case R_NDS32_DIFF8: | |
1c8f6a4d KLC |
8710 | bfd_put_8 (abfd, offset - (between - before), |
8711 | contents + irel->r_offset); | |
35c08157 KLC |
8712 | break; |
8713 | case R_NDS32_DIFF16: | |
1c8f6a4d KLC |
8714 | bfd_put_16 (abfd, offset - (between - before), |
8715 | contents + irel->r_offset); | |
35c08157 KLC |
8716 | break; |
8717 | case R_NDS32_DIFF32: | |
1c8f6a4d KLC |
8718 | bfd_put_32 (abfd, offset - (between - before), |
8719 | contents + irel->r_offset); | |
35c08157 KLC |
8720 | break; |
8721 | } | |
8722 | } | |
8723 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128 | |
8724 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) | |
8725 | { | |
8726 | bfd_vma val = 0; | |
8727 | unsigned int len = 0; | |
8728 | unsigned long before, between; | |
8729 | bfd_byte *endp, *p; | |
8730 | ||
1c8f6a4d KLC |
8731 | val = read_unsigned_leb128 (abfd, contents + irel->r_offset, |
8732 | &len); | |
35c08157 KLC |
8733 | |
8734 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); | |
1c8f6a4d KLC |
8735 | between = get_nds32_elf_blank_total (&blank_t, |
8736 | irel->r_addend + val, 0); | |
35c08157 KLC |
8737 | if (between == before) |
8738 | goto done_adjust_diff; | |
8739 | ||
8740 | p = contents + irel->r_offset; | |
8741 | endp = p + len -1; | |
8742 | memset (p, 0x80, len); | |
8743 | *(endp) = 0; | |
8744 | p = write_uleb128 (p, val - (between - before)) - 1; | |
8745 | if (p < endp) | |
8746 | *p |= 0x80; | |
8747 | } | |
8748 | done_adjust_diff: | |
8749 | ||
8750 | if (sec == sect) | |
8751 | { | |
8752 | raddr = irel->r_offset; | |
1c8f6a4d KLC |
8753 | irel->r_offset -= get_nds32_elf_blank_total (&blank_t2, |
8754 | irel->r_offset, 1); | |
35c08157 KLC |
8755 | |
8756 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
8757 | continue; | |
8758 | if (blank_t2 && blank_t2->next | |
1c8f6a4d KLC |
8759 | && (blank_t2->offset > raddr |
8760 | || blank_t2->next->offset <= raddr)) | |
8761 | (*_bfd_error_handler) | |
8762 | (_("%B: %s\n"), abfd, | |
8763 | "Error: search_nds32_elf_blank reports wrong node"); | |
35c08157 KLC |
8764 | |
8765 | /* Mark reloc in deleted portion as NONE. | |
8766 | For some relocs like R_NDS32_LABEL that doesn't modify the | |
8767 | content in the section. R_NDS32_LABEL doesn't belong to the | |
8768 | instruction in the section, so we should preserve it. */ | |
8769 | if (raddr >= blank_t2->offset | |
8770 | && raddr < blank_t2->offset + blank_t2->size | |
8771 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL | |
8772 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN | |
8773 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END | |
8774 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
8775 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND | |
8776 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND) | |
8777 | { | |
8778 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
8779 | R_NDS32_NONE); | |
8780 | continue; | |
8781 | } | |
8782 | } | |
8783 | ||
8784 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE | |
8785 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
8786 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
8787 | continue; | |
8788 | ||
8789 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info | |
8790 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx | |
8791 | && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION) | |
8792 | { | |
8793 | if (irel->r_addend <= sec->size) | |
8794 | irel->r_addend -= | |
8795 | get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1); | |
8796 | } | |
8797 | } | |
8798 | } | |
8799 | ||
8800 | /* Adjust the local symbols defined in this section. */ | |
8801 | blank_t = blank_head; | |
8802 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) | |
8803 | { | |
8804 | if (isym->st_shndx == sec_shndx) | |
8805 | { | |
8806 | if (isym->st_value <= sec->size) | |
8807 | { | |
8808 | bfd_vma ahead; | |
8809 | bfd_vma orig_addr = isym->st_value; | |
8810 | ||
8811 | ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1); | |
8812 | isym->st_value -= ahead; | |
8813 | ||
8814 | /* Adjust function size. */ | |
1c8f6a4d KLC |
8815 | if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC |
8816 | && isym->st_size > 0) | |
8817 | isym->st_size -= | |
8818 | get_nds32_elf_blank_total | |
8819 | (&blank_t, orig_addr + isym->st_size, 0) - ahead; | |
35c08157 KLC |
8820 | } |
8821 | } | |
8822 | } | |
8823 | ||
8824 | /* Now adjust the global symbols defined in this section. */ | |
8825 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
8826 | - symtab_hdr->sh_info); | |
8827 | sym_hashes = elf_sym_hashes (abfd); | |
8828 | end_hashes = sym_hashes + symcount; | |
8829 | blank_t = blank_head; | |
8830 | for (; sym_hashes < end_hashes; sym_hashes++) | |
8831 | { | |
8832 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
8833 | ||
8834 | if ((sym_hash->root.type == bfd_link_hash_defined | |
8835 | || sym_hash->root.type == bfd_link_hash_defweak) | |
8836 | && sym_hash->root.u.def.section == sec) | |
8837 | { | |
8838 | if (sym_hash->root.u.def.value <= sec->size) | |
8839 | { | |
8840 | bfd_vma ahead; | |
8841 | bfd_vma orig_addr = sym_hash->root.u.def.value; | |
8842 | ||
8843 | ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1); | |
8844 | sym_hash->root.u.def.value -= ahead; | |
8845 | ||
8846 | /* Adjust function size. */ | |
8847 | if (sym_hash->type == STT_FUNC) | |
1c8f6a4d KLC |
8848 | sym_hash->size -= |
8849 | get_nds32_elf_blank_total | |
8850 | (&blank_t, orig_addr + sym_hash->size, 0) - ahead; | |
35c08157 KLC |
8851 | |
8852 | } | |
8853 | } | |
8854 | } | |
8855 | ||
8856 | contents = elf_section_data (sec)->this_hdr.contents; | |
8857 | blank_t = blank_head; | |
8858 | while (blank_t->next) | |
8859 | { | |
8860 | /* Actually delete the bytes. */ | |
8861 | ||
8862 | /* If current blank is the last blank overlap with current section, | |
8863 | go to finish process. */ | |
8864 | if (sec->size <= (blank_t->next->offset)) | |
8865 | break; | |
8866 | ||
8867 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8868 | contents + blank_t->offset + blank_t->size, | |
8869 | blank_t->next->offset - (blank_t->offset + blank_t->size)); | |
8870 | ||
8871 | blank_t = blank_t->next; | |
8872 | } | |
8873 | ||
8874 | if (sec->size > (blank_t->offset + blank_t->size)) | |
8875 | { | |
8876 | /* There are remaining code between blank and section boundary. | |
8877 | Move the remaining code to appropriate location. */ | |
8878 | memmove (contents + blank_t->offset - blank_t->total_size, | |
8879 | contents + blank_t->offset + blank_t->size, | |
8880 | sec->size - (blank_t->offset + blank_t->size)); | |
8881 | sec->size -= blank_t->total_size + blank_t->size; | |
8882 | } | |
8883 | else | |
8884 | /* This blank is not entirely included in the section, | |
8885 | reduce the section size by only part of the blank size. */ | |
8886 | sec->size -= blank_t->total_size + (sec->size - blank_t->offset); | |
8887 | ||
8888 | while (blank_head) | |
8889 | { | |
8890 | blank_t = blank_head; | |
8891 | blank_head = blank_head->next; | |
8892 | remove_nds32_elf_blank (blank_t); | |
8893 | } | |
8894 | ||
8895 | return TRUE; | |
8896 | } | |
8897 | ||
8898 | /* Get the contents of a section. */ | |
8899 | ||
8900 | static int | |
8901 | nds32_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents_p) | |
8902 | { | |
8903 | /* Get the section contents. */ | |
8904 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
8905 | *contents_p = elf_section_data (sec)->this_hdr.contents; | |
8906 | else | |
8907 | { | |
8908 | if (!bfd_malloc_and_get_section (abfd, sec, contents_p)) | |
8909 | return FALSE; | |
8910 | elf_section_data (sec)->this_hdr.contents = *contents_p; | |
8911 | } | |
8912 | ||
8913 | return TRUE; | |
8914 | } | |
8915 | ||
8916 | /* Get the contents of the internal symbol of abfd. */ | |
8917 | ||
8918 | static int | |
8919 | nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED, | |
8920 | Elf_Internal_Sym **isymbuf_p) | |
8921 | { | |
8922 | Elf_Internal_Shdr *symtab_hdr; | |
8923 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
8924 | ||
8925 | /* Read this BFD's local symbols if we haven't done so already. */ | |
8926 | if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0) | |
8927 | { | |
8928 | *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents; | |
8929 | if (*isymbuf_p == NULL) | |
8930 | { | |
8931 | *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
8932 | symtab_hdr->sh_info, 0, | |
8933 | NULL, NULL, NULL); | |
8934 | if (*isymbuf_p == NULL) | |
8935 | return FALSE; | |
8936 | } | |
8937 | } | |
8938 | symtab_hdr->contents = (bfd_byte *) (*isymbuf_p); | |
8939 | ||
8940 | return TRUE; | |
8941 | } | |
8942 | ||
8943 | /* Range of small data. */ | |
1c8f6a4d KLC |
8944 | static bfd_vma sdata_range[2][2]; |
8945 | static bfd_vma const sdata_init_range[2] = | |
8946 | { ACCURATE_12BIT_S1, ACCURATE_19BIT }; | |
35c08157 KLC |
8947 | |
8948 | static int | |
8949 | nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED, | |
8950 | bfd_byte *contents, bfd_vma addr) | |
8951 | { | |
8952 | unsigned long insn = bfd_getb32 (contents + addr); | |
8953 | ||
8954 | if (insn & 0x80000000) | |
8955 | return 2; | |
8956 | ||
8957 | return 4; | |
8958 | } | |
8959 | ||
8960 | /* Set the gp relax range. We have to measure the safe range | |
8961 | to do gp relaxation. */ | |
8962 | ||
8963 | static void | |
8964 | relax_range_measurement (bfd *abfd) | |
8965 | { | |
8966 | asection *sec_f, *sec_b; | |
8967 | /* For upper bound. */ | |
8968 | bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize; | |
8969 | bfd_vma align; | |
35c08157 KLC |
8970 | static int decide_relax_range = 0; |
8971 | int i; | |
1c8f6a4d | 8972 | int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]); |
35c08157 KLC |
8973 | |
8974 | if (decide_relax_range) | |
8975 | return; | |
8976 | decide_relax_range = 1; | |
8977 | ||
8978 | if (sda_rela_sec == NULL) | |
8979 | { | |
8980 | /* Since there is no data sections, we assume the range is page size. */ | |
1c8f6a4d | 8981 | for (i = 0; i < range_number; i++) |
35c08157 KLC |
8982 | { |
8983 | sdata_range[i][0] = sdata_init_range[i] - 0x1000; | |
8984 | sdata_range[i][1] = sdata_init_range[i] - 0x1000; | |
8985 | } | |
8986 | return; | |
8987 | } | |
8988 | ||
8989 | /* Get the biggest alignment power after the gp located section. */ | |
8990 | sec_f = sda_rela_sec->output_section; | |
8991 | sec_b = sec_f->next; | |
8992 | align = 0; | |
8993 | while (sec_b != NULL) | |
8994 | { | |
8995 | if ((unsigned)(1 << sec_b->alignment_power) > align) | |
8996 | align = (1 << sec_b->alignment_power); | |
8997 | sec_b = sec_b->next; | |
8998 | } | |
8999 | ||
9000 | /* I guess we can not determine the section before | |
9001 | gp located section, so we assume the align is max page size. */ | |
1c8f6a4d | 9002 | for (i = 0; i < range_number; i++) |
35c08157 | 9003 | { |
1c8f6a4d | 9004 | sdata_range[i][1] = sdata_init_range[i] - align; |
35c08157 | 9005 | BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]); |
1c8f6a4d | 9006 | sdata_range[i][0] = sdata_init_range[i] - maxpgsz; |
35c08157 KLC |
9007 | BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]); |
9008 | } | |
9009 | } | |
9010 | ||
9011 | /* These are macros used to check flags encoded in r_addend. | |
9012 | They are only used by nds32_elf_relax_section (). */ | |
9013 | #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff) | |
9014 | #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000) | |
9015 | #define IS_OPTIMIZE(addend) ((addend) & 0x40000000) | |
9016 | #define IS_16BIT_ON(addend) ((addend) & 0x20000000) | |
9017 | ||
1c8f6a4d KLC |
9018 | /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */ |
9019 | ||
35c08157 | 9020 | static bfd_boolean |
1c8f6a4d KLC |
9021 | nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
9022 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9023 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9024 | Elf_Internal_Shdr *symtab_hdr) | |
9025 | { | |
9026 | /* There are 3 variations for LONGCALL1 | |
9027 | case 4-4-2; 16-bit on, optimize off or optimize for space | |
9028 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9029 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9030 | jral5 ta ; | |
9031 | ||
9032 | case 4-4-4; 16-bit off, optimize don't care | |
9033 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9034 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9035 | jral ta ; | |
9036 | ||
9037 | case 4-4-4; 16-bit on, optimize for speed | |
9038 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 | |
9039 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9040 | jral ta ; | |
9041 | Check code for -mlong-calls output. */ | |
9042 | ||
9043 | /* Get the reloc for the address from which the register is | |
9044 | being loaded. This reloc will tell us which function is | |
9045 | actually being called. */ | |
9046 | ||
9047 | bfd_vma laddr; | |
9048 | int seq_len; /* Original length of instruction sequence. */ | |
35c08157 | 9049 | uint32_t insn; |
1c8f6a4d KLC |
9050 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; |
9051 | int pic_ext_target = 0; | |
9052 | bfd_signed_vma foff; | |
35c08157 | 9053 | uint16_t insn16; |
35c08157 | 9054 | |
1c8f6a4d KLC |
9055 | irelend = internal_relocs + sec->reloc_count; |
9056 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9057 | laddr = irel->r_offset; | |
9058 | *insn_len = seq_len; | |
35c08157 | 9059 | |
1c8f6a4d KLC |
9060 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9061 | R_NDS32_HI20_RELA, laddr); | |
9062 | lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9063 | R_NDS32_LO12S0_ORI_RELA, | |
9064 | laddr + 4); | |
35c08157 | 9065 | |
1c8f6a4d | 9066 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
35c08157 KLC |
9067 | { |
9068 | (*_bfd_error_handler) | |
1c8f6a4d KLC |
9069 | ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized" |
9070 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9071 | return FALSE; | |
35c08157 KLC |
9072 | } |
9073 | ||
1c8f6a4d KLC |
9074 | /* Get the value of the symbol referred to by the reloc. */ |
9075 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9076 | &pic_ext_target); | |
35c08157 | 9077 | |
1c8f6a4d KLC |
9078 | /* This condition only happened when symbol is undefined. */ |
9079 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
9080 | || foff >= CONSERVATIVE_24BIT_S1) | |
9081 | return FALSE; | |
35c08157 | 9082 | |
1c8f6a4d KLC |
9083 | /* Relax to: jal symbol; 25_PCREL */ |
9084 | /* For simplicity of coding, we are going to modify the section | |
9085 | contents, the section relocs, and the BFD symbol table. We | |
9086 | must tell the rest of the code not to free up this | |
9087 | information. It would be possible to instead create a table | |
9088 | of changes which have to be made, as is done in coff-mips.c; | |
9089 | that would be more work, but would require less memory when | |
9090 | the linker is run. */ | |
9091 | ||
9092 | /* Replace the long call with a jal. */ | |
9093 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9094 | R_NDS32_25_PCREL_RELA); | |
9095 | irel->r_addend = hi_irelfn->r_addend; | |
9096 | ||
9097 | /* We don't resolve this here but resolve it in relocate_section. */ | |
9098 | insn = INSN_JAL; | |
9099 | bfd_putb32 (insn, contents + irel->r_offset); | |
9100 | ||
9101 | hi_irelfn->r_info = | |
9102 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9103 | lo_irelfn->r_info = | |
9104 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
9105 | *insn_len = 4; | |
9106 | ||
9107 | if (seq_len & 0x2) | |
9108 | { | |
9109 | insn16 = NDS32_NOP16; | |
9110 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9111 | lo_irelfn->r_info = | |
9112 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
9113 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9114 | *insn_len += 2; | |
9115 | } | |
9116 | return TRUE; | |
9117 | } | |
35c08157 | 9118 | |
1c8f6a4d KLC |
9119 | #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000) |
9120 | /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */ | |
35c08157 | 9121 | |
1c8f6a4d KLC |
9122 | static bfd_boolean |
9123 | nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9124 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9125 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9126 | Elf_Internal_Shdr *symtab_hdr) | |
9127 | { | |
9128 | /* bltz rt, .L1 ; LONGCALL2 | |
9129 | jal symbol ; 25_PCREL | |
9130 | .L1: */ | |
35c08157 | 9131 | |
1c8f6a4d KLC |
9132 | /* Get the reloc for the address from which the register is |
9133 | being loaded. This reloc will tell us which function is | |
9134 | actually being called. */ | |
35c08157 | 9135 | |
1c8f6a4d KLC |
9136 | bfd_vma laddr; |
9137 | uint32_t insn; | |
9138 | Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend; | |
9139 | int pic_ext_target = 0; | |
9140 | bfd_signed_vma foff; | |
35c08157 | 9141 | |
1c8f6a4d KLC |
9142 | irelend = internal_relocs + sec->reloc_count; |
9143 | laddr = irel->r_offset; | |
9144 | i1_irelfn = | |
9145 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9146 | R_NDS32_25_PCREL_RELA, laddr + 4); | |
9147 | ||
9148 | if (i1_irelfn == irelend) | |
35c08157 | 9149 | { |
1c8f6a4d KLC |
9150 | (*_bfd_error_handler) |
9151 | ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized" | |
9152 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9153 | return FALSE; | |
35c08157 KLC |
9154 | } |
9155 | ||
1c8f6a4d | 9156 | insn = bfd_getb32 (contents + laddr); |
35c08157 | 9157 | |
1c8f6a4d KLC |
9158 | /* Get the value of the symbol referred to by the reloc. */ |
9159 | foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr, | |
9160 | &pic_ext_target); | |
35c08157 | 9161 | |
1c8f6a4d KLC |
9162 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
9163 | || foff >= CONSERVATIVE_16BIT_S1) | |
9164 | return FALSE; | |
35c08157 | 9165 | |
1c8f6a4d KLC |
9166 | /* Relax to bgezal rt, label ; 17_PCREL |
9167 | or bltzal rt, label ; 17_PCREL */ | |
9168 | ||
9169 | /* Convert to complimentary conditional call. */ | |
9170 | insn = CONVERT_CONDITION_CALL (insn); | |
9171 | ||
9172 | /* For simplicity of coding, we are going to modify the section | |
9173 | contents, the section relocs, and the BFD symbol table. We | |
9174 | must tell the rest of the code not to free up this | |
9175 | information. It would be possible to instead create a table | |
9176 | of changes which have to be made, as is done in coff-mips.c; | |
9177 | that would be more work, but would require less memory when | |
9178 | the linker is run. */ | |
9179 | ||
9180 | /* Clean unnessary relocations. */ | |
9181 | i1_irelfn->r_info = | |
9182 | ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE); | |
9183 | cond_irelfn = | |
9184 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9185 | R_NDS32_17_PCREL_RELA, laddr); | |
9186 | if (cond_irelfn != irelend) | |
9187 | cond_irelfn->r_info = | |
9188 | ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE); | |
9189 | ||
9190 | /* Replace the long call with a bgezal. */ | |
9191 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), | |
9192 | R_NDS32_17_PCREL_RELA); | |
9193 | irel->r_addend = i1_irelfn->r_addend; | |
9194 | ||
9195 | bfd_putb32 (insn, contents + irel->r_offset); | |
9196 | ||
9197 | *insn_len = 4; | |
9198 | return TRUE; | |
9199 | } | |
35c08157 | 9200 | |
1c8f6a4d KLC |
9201 | /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */ |
9202 | ||
9203 | static bfd_boolean | |
9204 | nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9205 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9206 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9207 | Elf_Internal_Shdr *symtab_hdr) | |
9208 | { | |
9209 | /* There are 3 variations for LONGCALL3 | |
9210 | case 4-4-4-2; 16-bit on, optimize off or optimize for space | |
9211 | bltz rt, $1 ; LONGCALL3 | |
9212 | sethi ta, hi20(symbol) ; HI20 | |
9213 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9214 | jral5 ta ; | |
9215 | $1 | |
9216 | ||
9217 | case 4-4-4-4; 16-bit off, optimize don't care | |
9218 | bltz rt, $1 ; LONGCALL3 | |
9219 | sethi ta, hi20(symbol) ; HI20 | |
9220 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9221 | jral ta ; | |
9222 | $1 | |
9223 | ||
9224 | case 4-4-4-4; 16-bit on, optimize for speed | |
9225 | bltz rt, $1 ; LONGCALL3 | |
9226 | sethi ta, hi20(symbol) ; HI20 | |
9227 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9228 | jral ta ; | |
9229 | $1 */ | |
9230 | ||
9231 | /* Get the reloc for the address from which the register is | |
9232 | being loaded. This reloc will tell us which function is | |
9233 | actually being called. */ | |
9234 | ||
9235 | bfd_vma laddr; | |
9236 | int seq_len; /* Original length of instruction sequence. */ | |
9237 | uint32_t insn; | |
9238 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
9239 | int pic_ext_target = 0; | |
9240 | bfd_signed_vma foff; | |
9241 | uint16_t insn16; | |
9242 | ||
9243 | irelend = internal_relocs + sec->reloc_count; | |
9244 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9245 | laddr = irel->r_offset; | |
9246 | *insn_len = seq_len; | |
9247 | ||
9248 | hi_irelfn = | |
9249 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9250 | R_NDS32_HI20_RELA, laddr + 4); | |
9251 | lo_irelfn = | |
9252 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9253 | R_NDS32_LO12S0_ORI_RELA, laddr + 8); | |
9254 | ||
9255 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9256 | { | |
9257 | (*_bfd_error_handler) | |
9258 | ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized" | |
9259 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9260 | return FALSE; | |
35c08157 KLC |
9261 | } |
9262 | ||
1c8f6a4d KLC |
9263 | /* Get the value of the symbol referred to by the reloc. */ |
9264 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9265 | &pic_ext_target); | |
35c08157 | 9266 | |
1c8f6a4d KLC |
9267 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9268 | || foff >= CONSERVATIVE_24BIT_S1) | |
9269 | return FALSE; | |
35c08157 | 9270 | |
1c8f6a4d KLC |
9271 | insn = bfd_getb32 (contents + laddr); |
9272 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
35c08157 | 9273 | { |
1c8f6a4d KLC |
9274 | /* Relax to bgezal rt, label ; 17_PCREL |
9275 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 9276 | |
1c8f6a4d KLC |
9277 | /* Convert to complimentary conditional call. */ |
9278 | insn = CONVERT_CONDITION_CALL (insn); | |
9279 | bfd_putb32 (insn, contents + irel->r_offset); | |
35c08157 | 9280 | |
1c8f6a4d KLC |
9281 | *insn_len = 4; |
9282 | irel->r_info = | |
9283 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9284 | hi_irelfn->r_info = | |
9285 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
9286 | lo_irelfn->r_info = | |
9287 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
9288 | ||
9289 | cond_irelfn = | |
9290 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9291 | R_NDS32_17_PCREL_RELA, laddr); | |
9292 | if (cond_irelfn != irelend) | |
35c08157 | 9293 | { |
1c8f6a4d KLC |
9294 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9295 | R_NDS32_17_PCREL_RELA); | |
9296 | cond_irelfn->r_addend = hi_irelfn->r_addend; | |
35c08157 | 9297 | } |
1c8f6a4d KLC |
9298 | |
9299 | if (seq_len & 0x2) | |
35c08157 | 9300 | { |
1c8f6a4d KLC |
9301 | insn16 = NDS32_NOP16; |
9302 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9303 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9304 | R_NDS32_INSN16); | |
9305 | hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9306 | insn_len += 2; | |
35c08157 | 9307 | } |
1c8f6a4d KLC |
9308 | } |
9309 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
9310 | { | |
9311 | /* Relax to the following instruction sequence | |
9312 | bltz rt, $1 ; LONGCALL2 | |
9313 | jal symbol ; 25_PCREL | |
9314 | $1 */ | |
9315 | *insn_len = 8; | |
9316 | insn = INSN_JAL; | |
9317 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
35c08157 | 9318 | |
1c8f6a4d KLC |
9319 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
9320 | R_NDS32_25_PCREL_RELA); | |
9321 | irel->r_info = | |
9322 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2); | |
9323 | ||
9324 | lo_irelfn->r_info = | |
9325 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9326 | |
1c8f6a4d | 9327 | if (seq_len & 0x2) |
35c08157 | 9328 | { |
1c8f6a4d KLC |
9329 | insn16 = NDS32_NOP16; |
9330 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9331 | lo_irelfn->r_info = | |
9332 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); | |
9333 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9334 | insn_len += 2; | |
9335 | } | |
9336 | } | |
9337 | return TRUE; | |
9338 | } | |
35c08157 | 9339 | |
1c8f6a4d | 9340 | /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */ |
35c08157 | 9341 | |
1c8f6a4d KLC |
9342 | static bfd_boolean |
9343 | nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9344 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9345 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9346 | Elf_Internal_Shdr *symtab_hdr) | |
9347 | { | |
9348 | /* There are 3 variations for LONGJUMP1 | |
9349 | case 4-4-2; 16-bit bit on, optimize off or optimize for space | |
9350 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9351 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9352 | jr5 ta ; | |
9353 | ||
9354 | case 4-4-4; 16-bit off, optimize don't care | |
9355 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9356 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9357 | jr ta ; | |
9358 | ||
9359 | case 4-4-4; 16-bit on, optimize for speed | |
9360 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 | |
9361 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9362 | jr ta ; */ | |
9363 | ||
9364 | /* Get the reloc for the address from which the register is | |
9365 | being loaded. This reloc will tell us which function is | |
9366 | actually being called. */ | |
9367 | ||
9368 | bfd_vma laddr; | |
9369 | int seq_len; /* Original length of instruction sequence. */ | |
9370 | int insn16_on; /* 16-bit on/off. */ | |
9371 | uint32_t insn; | |
9372 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; | |
9373 | int pic_ext_target = 0; | |
9374 | bfd_signed_vma foff; | |
9375 | uint16_t insn16; | |
9376 | unsigned long reloc; | |
35c08157 | 9377 | |
1c8f6a4d KLC |
9378 | irelend = internal_relocs + sec->reloc_count; |
9379 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9380 | laddr = irel->r_offset; | |
9381 | *insn_len = seq_len; | |
9382 | insn16_on = IS_16BIT_ON (irel->r_addend); | |
9383 | ||
9384 | hi_irelfn = | |
9385 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9386 | R_NDS32_HI20_RELA, laddr); | |
9387 | lo_irelfn = | |
9388 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9389 | R_NDS32_LO12S0_ORI_RELA, laddr + 4); | |
9390 | if (hi_irelfn == irelend || lo_irelfn == irelend) | |
9391 | { | |
9392 | (*_bfd_error_handler) | |
9393 | ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized" | |
9394 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9395 | return FALSE; | |
9396 | } | |
35c08157 | 9397 | |
1c8f6a4d KLC |
9398 | /* Get the value of the symbol referred to by the reloc. */ |
9399 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9400 | &pic_ext_target); | |
35c08157 | 9401 | |
1c8f6a4d KLC |
9402 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
9403 | || foff < -CONSERVATIVE_24BIT_S1) | |
9404 | return FALSE; | |
35c08157 | 9405 | |
1c8f6a4d KLC |
9406 | if (insn16_on && foff >= -ACCURATE_8BIT_S1 |
9407 | && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2)) | |
9408 | { | |
9409 | /* j8 label */ | |
9410 | /* 16-bit on, but not optimized for speed. */ | |
9411 | reloc = R_NDS32_9_PCREL_RELA; | |
9412 | insn16 = INSN_J8; | |
9413 | bfd_putb16 (insn16, contents + irel->r_offset); | |
9414 | *insn_len = 2; | |
9415 | irel->r_info = | |
9416 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
9417 | } | |
9418 | else | |
9419 | { | |
9420 | /* j label */ | |
9421 | reloc = R_NDS32_25_PCREL_RELA; | |
9422 | insn = INSN_J; | |
9423 | bfd_putb32 (insn, contents + irel->r_offset); | |
9424 | *insn_len = 4; | |
9425 | irel->r_info = | |
9426 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16); | |
9427 | irel->r_addend = 0; | |
9428 | } | |
35c08157 | 9429 | |
1c8f6a4d KLC |
9430 | hi_irelfn->r_info = |
9431 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9432 | lo_irelfn->r_info = | |
9433 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); | |
35c08157 | 9434 | |
1c8f6a4d KLC |
9435 | if ((seq_len & 0x2) && ((*insn_len & 2) == 0)) |
9436 | { | |
9437 | insn16 = NDS32_NOP16; | |
9438 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9439 | lo_irelfn->r_info = | |
9440 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9441 | R_NDS32_INSN16); | |
9442 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9443 | *insn_len += 2; | |
9444 | } | |
9445 | return TRUE; | |
9446 | } | |
9447 | ||
9448 | /* Revert condition branch. This function does not check if the input | |
9449 | instruction is condition branch or not. */ | |
9450 | ||
9451 | static void | |
9452 | nds32_elf_convert_branch (uint16_t insn16, uint32_t insn, | |
9453 | uint16_t *re_insn16, uint32_t *re_insn) | |
9454 | { | |
9455 | uint32_t comp_insn = 0; | |
9456 | uint16_t comp_insn16 = 0; | |
9457 | ||
9458 | if (insn) | |
9459 | { | |
9460 | if (N32_OP6 (insn) == N32_OP6_BR1) | |
9461 | { | |
9462 | /* beqs label. */ | |
9463 | comp_insn = (insn ^ 0x4000) & 0xffffc000; | |
9464 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5) | |
35c08157 | 9465 | { |
1c8f6a4d KLC |
9466 | /* Insn can be contracted to 16-bit implied r5. */ |
9467 | comp_insn16 = | |
9468 | (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38; | |
9469 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
35c08157 | 9470 | } |
1c8f6a4d KLC |
9471 | } |
9472 | else if (N32_OP6 (insn) == N32_OP6_BR3) | |
9473 | { | |
9474 | /* bnec $ta, imm11, label. */ | |
9475 | comp_insn = (insn ^ 0x80000) & 0xffffff00; | |
9476 | } | |
9477 | else | |
9478 | { | |
9479 | comp_insn = (insn ^ 0x10000) & 0xffffc000; | |
9480 | if (N32_BR2_SUB (insn) == N32_BR2_BEQZ | |
9481 | || N32_BR2_SUB (insn) == N32_BR2_BNEZ) | |
35c08157 | 9482 | { |
1c8f6a4d | 9483 | if (N32_IS_RT3 (insn)) |
35c08157 | 9484 | { |
1c8f6a4d KLC |
9485 | /* Insn can be contracted to 16-bit. */ |
9486 | comp_insn16 = | |
9487 | (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38; | |
9488 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; | |
9489 | } | |
9490 | else if (N32_RT5 (insn) == REG_R15) | |
9491 | { | |
9492 | /* Insn can be contracted to 16-bit. */ | |
9493 | comp_insn16 = | |
9494 | (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38; | |
35c08157 | 9495 | } |
35c08157 KLC |
9496 | } |
9497 | } | |
1c8f6a4d KLC |
9498 | } |
9499 | else | |
9500 | { | |
9501 | switch ((insn16 & 0xf000) >> 12) | |
35c08157 | 9502 | { |
1c8f6a4d KLC |
9503 | case 0xc: |
9504 | /* beqz38 or bnez38 */ | |
9505 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9506 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ; | |
9507 | comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20; | |
9508 | break; | |
35c08157 | 9509 | |
1c8f6a4d KLC |
9510 | case 0xd: |
9511 | /* beqs38 or bnes38 */ | |
9512 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; | |
9513 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ; | |
9514 | comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20) | |
9515 | | (REG_R5 << 15); | |
9516 | break; | |
35c08157 | 9517 | |
1c8f6a4d KLC |
9518 | case 0xe: |
9519 | /* beqzS8 or bnezS8 */ | |
9520 | comp_insn16 = (insn16 ^ 0x0100) & 0xff00; | |
9521 | comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ; | |
9522 | comp_insn |= REG_R15 << 20; | |
9523 | break; | |
35c08157 | 9524 | |
1c8f6a4d KLC |
9525 | default: |
9526 | break; | |
9527 | } | |
9528 | } | |
9529 | if (comp_insn && re_insn) | |
9530 | *re_insn = comp_insn; | |
9531 | if (comp_insn16 && re_insn16) | |
9532 | *re_insn16 = comp_insn16; | |
9533 | } | |
35c08157 | 9534 | |
1c8f6a4d | 9535 | /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */ |
35c08157 | 9536 | |
1c8f6a4d KLC |
9537 | static bfd_boolean |
9538 | nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9539 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9540 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9541 | Elf_Internal_Shdr *symtab_hdr) | |
9542 | { | |
9543 | /* There are 3 variations for LONGJUMP2 | |
9544 | case 2-4; 1st insn convertible, 16-bit on, | |
9545 | optimize off or optimize for space | |
9546 | bnes38 rt, ra, $1 ; LONGJUMP2 | |
9547 | j label ; 25_PCREL | |
9548 | $1: | |
9549 | ||
9550 | case 4-4; 1st insn not convertible | |
9551 | bne rt, ra, $1 ; LONGJUMP2 | |
9552 | j label ; 25_PCREL | |
9553 | $1: | |
9554 | ||
9555 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9556 | bne rt, ra, $1 ; LONGJUMP2 | |
9557 | j label ; 25_PCREL | |
9558 | $1: */ | |
9559 | ||
9560 | /* Get the reloc for the address from which the register is | |
9561 | being loaded. This reloc will tell us which function is | |
9562 | actually being called. */ | |
9563 | ||
9564 | bfd_vma laddr; | |
9565 | int seq_len; /* Original length of instruction sequence. */ | |
9566 | Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend; | |
9567 | int pic_ext_target = 0, first_size; | |
9568 | unsigned int i; | |
9569 | bfd_signed_vma foff; | |
9570 | uint32_t insn, re_insn = 0; | |
9571 | uint16_t insn16, re_insn16 = 0; | |
9572 | unsigned long reloc, cond_reloc; | |
35c08157 | 9573 | |
1c8f6a4d KLC |
9574 | enum elf_nds32_reloc_type checked_types[] = |
9575 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
35c08157 | 9576 | |
1c8f6a4d KLC |
9577 | irelend = internal_relocs + sec->reloc_count; |
9578 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9579 | laddr = irel->r_offset; | |
9580 | *insn_len = seq_len; | |
9581 | first_size = (seq_len == 6) ? 2 : 4; | |
9582 | ||
9583 | i2_irelfn = | |
9584 | find_relocs_at_address_addr (irel, internal_relocs, | |
9585 | irelend, R_NDS32_25_PCREL_RELA, | |
9586 | laddr + first_size); | |
9587 | ||
9588 | for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++) | |
9589 | { | |
9590 | cond_irelfn = | |
9591 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9592 | checked_types[i], laddr); | |
9593 | if (cond_irelfn != irelend) | |
9594 | break; | |
9595 | } | |
35c08157 | 9596 | |
1c8f6a4d KLC |
9597 | if (i2_irelfn == irelend || cond_irelfn == irelend) |
9598 | { | |
9599 | (*_bfd_error_handler) | |
9600 | ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized" | |
9601 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9602 | return FALSE; | |
9603 | } | |
35c08157 | 9604 | |
1c8f6a4d KLC |
9605 | /* Get the value of the symbol referred to by the reloc. */ |
9606 | foff = | |
9607 | calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr, | |
9608 | &pic_ext_target); | |
9609 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 | |
9610 | || foff >= CONSERVATIVE_16BIT_S1) | |
9611 | return FALSE; | |
35c08157 | 9612 | |
1c8f6a4d KLC |
9613 | /* Get the all corresponding instructions. */ |
9614 | if (first_size == 4) | |
9615 | { | |
9616 | insn = bfd_getb32 (contents + laddr); | |
9617 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9618 | } | |
9619 | else | |
9620 | { | |
9621 | insn16 = bfd_getb16 (contents + laddr); | |
9622 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9623 | } | |
35c08157 | 9624 | |
1c8f6a4d KLC |
9625 | if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size) |
9626 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9627 | { | |
9628 | if (first_size == 4) | |
9629 | { | |
9630 | /* Don't convert it to 16-bit now, keep this as relaxable for | |
9631 | ``label reloc; INSN16''. */ | |
35c08157 | 9632 | |
1c8f6a4d KLC |
9633 | /* Save comp_insn32 to buffer. */ |
9634 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9635 | *insn_len = 4; | |
9636 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9637 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9638 | cond_reloc = R_NDS32_INSN16; | |
9639 | } | |
9640 | else | |
9641 | { | |
9642 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9643 | *insn_len = 2; | |
9644 | reloc = R_NDS32_9_PCREL_RELA; | |
9645 | cond_reloc = R_NDS32_NONE; | |
9646 | } | |
9647 | } | |
9648 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9649 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9650 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9651 | { | |
9652 | /* beqs label ; 15_PCREL */ | |
9653 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9654 | *insn_len = 4; | |
9655 | reloc = R_NDS32_15_PCREL_RELA; | |
9656 | cond_reloc = R_NDS32_NONE; | |
9657 | } | |
9658 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9659 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9660 | && foff < CONSERVATIVE_16BIT_S1) | |
9661 | { | |
9662 | /* beqz label ; 17_PCREL */ | |
9663 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9664 | *insn_len = 4; | |
9665 | reloc = R_NDS32_17_PCREL_RELA; | |
9666 | cond_reloc = R_NDS32_NONE; | |
9667 | } | |
9668 | else | |
9669 | return FALSE; | |
35c08157 | 9670 | |
1c8f6a4d KLC |
9671 | /* Set all relocations. */ |
9672 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc); | |
9673 | irel->r_addend = i2_irelfn->r_addend; | |
35c08157 | 9674 | |
1c8f6a4d KLC |
9675 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), |
9676 | cond_reloc); | |
9677 | cond_irelfn->r_addend = 0; | |
35c08157 | 9678 | |
1c8f6a4d KLC |
9679 | if ((seq_len ^ *insn_len ) & 0x2) |
9680 | { | |
9681 | insn16 = NDS32_NOP16; | |
9682 | bfd_putb16 (insn16, contents + irel->r_offset + 4); | |
9683 | i2_irelfn->r_offset = 4; | |
9684 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9685 | R_NDS32_INSN16); | |
9686 | i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9687 | *insn_len += 2; | |
9688 | } | |
9689 | else | |
9690 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), | |
9691 | R_NDS32_NONE); | |
9692 | return TRUE; | |
9693 | } | |
35c08157 | 9694 | |
1c8f6a4d | 9695 | /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */ |
35c08157 | 9696 | |
1c8f6a4d KLC |
9697 | static bfd_boolean |
9698 | nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9699 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9700 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9701 | Elf_Internal_Shdr *symtab_hdr) | |
9702 | { | |
9703 | /* There are 5 variations for LONGJUMP3 | |
9704 | case 1: 2-4-4-2; 1st insn convertible, 16-bit on, | |
9705 | optimize off or optimize for space | |
9706 | bnes38 rt, ra, $1 ; LONGJUMP3 | |
9707 | sethi ta, hi20(symbol) ; HI20 | |
9708 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9709 | jr5 ta ; | |
9710 | $1: ; | |
9711 | ||
9712 | case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed | |
9713 | bnes38 rt, ra, $1 ; LONGJUMP3 | |
9714 | sethi ta, hi20(symbol) ; HI20 | |
9715 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9716 | jr5 ta ; | |
9717 | $1: ; LABEL | |
9718 | ||
9719 | case 3: 4-4-4-2; 1st insn not convertible, 16-bit on, | |
9720 | optimize off or optimize for space | |
9721 | bne rt, ra, $1 ; LONGJUMP3 | |
9722 | sethi ta, hi20(symbol) ; HI20 | |
9723 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9724 | jr5 ta ; | |
9725 | $1: ; | |
9726 | ||
9727 | case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care | |
9728 | 16-bit off if no INSN16 | |
9729 | bne rt, ra, $1 ; LONGJUMP3 | |
9730 | sethi ta, hi20(symbol) ; HI20 | |
9731 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9732 | jr ta ; | |
9733 | $1: ; | |
9734 | ||
9735 | case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed | |
9736 | 16-bit off if no INSN16 | |
9737 | bne rt, ra, $1 ; LONGJUMP3 | |
9738 | sethi ta, hi20(symbol) ; HI20 | |
9739 | ori ta, ta, lo12(symbol) ; LO12S0 | |
9740 | jr ta ; | |
9741 | $1: ; LABEL */ | |
9742 | ||
9743 | /* Get the reloc for the address from which the register is | |
9744 | being loaded. This reloc will tell us which function is | |
9745 | actually being called. */ | |
9746 | enum elf_nds32_reloc_type checked_types[] = | |
9747 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; | |
9748 | ||
9749 | int reloc_off = 0, cond_removed = 0, convertible; | |
9750 | bfd_vma laddr; | |
9751 | int seq_len; /* Original length of instruction sequence. */ | |
9752 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; | |
9753 | int pic_ext_target = 0, first_size; | |
9754 | unsigned int i; | |
9755 | bfd_signed_vma foff; | |
9756 | uint32_t insn, re_insn = 0; | |
9757 | uint16_t insn16, re_insn16 = 0; | |
9758 | unsigned long reloc, cond_reloc; | |
35c08157 | 9759 | |
1c8f6a4d KLC |
9760 | irelend = internal_relocs + sec->reloc_count; |
9761 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
9762 | laddr = irel->r_offset; | |
9763 | *insn_len = seq_len; | |
35c08157 | 9764 | |
1c8f6a4d | 9765 | convertible = IS_1ST_CONVERT (irel->r_addend); |
35c08157 | 9766 | |
1c8f6a4d KLC |
9767 | if (convertible) |
9768 | first_size = 2; | |
9769 | else | |
9770 | first_size = 4; | |
9771 | ||
9772 | /* Get all needed relocations. */ | |
9773 | hi_irelfn = | |
9774 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9775 | R_NDS32_HI20_RELA, laddr + first_size); | |
9776 | lo_irelfn = | |
9777 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9778 | R_NDS32_LO12S0_ORI_RELA, | |
9779 | laddr + first_size + 4); | |
9780 | ||
9781 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
9782 | { | |
9783 | cond_irelfn = | |
9784 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9785 | checked_types[i], laddr); | |
9786 | if (cond_irelfn != irelend) | |
9787 | break; | |
9788 | } | |
35c08157 | 9789 | |
1c8f6a4d KLC |
9790 | if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend) |
9791 | { | |
9792 | (*_bfd_error_handler) | |
9793 | ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized" | |
9794 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9795 | return FALSE; | |
9796 | } | |
35c08157 | 9797 | |
1c8f6a4d KLC |
9798 | /* Get the value of the symbol referred to by the reloc. */ |
9799 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, | |
9800 | &pic_ext_target); | |
35c08157 | 9801 | |
1c8f6a4d KLC |
9802 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
9803 | || foff >= CONSERVATIVE_24BIT_S1) | |
9804 | return FALSE; | |
35c08157 | 9805 | |
1c8f6a4d KLC |
9806 | /* Get the all corresponding instructions. */ |
9807 | if (first_size == 4) | |
9808 | { | |
9809 | insn = bfd_getb32 (contents + laddr); | |
9810 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
9811 | } | |
9812 | else | |
9813 | { | |
9814 | insn16 = bfd_getb16 (contents + laddr); | |
9815 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
9816 | } | |
35c08157 | 9817 | |
1c8f6a4d KLC |
9818 | /* For simplicity of coding, we are going to modify the section |
9819 | contents, the section relocs, and the BFD symbol table. We | |
9820 | must tell the rest of the code not to free up this | |
9821 | information. It would be possible to instead create a table | |
9822 | of changes which have to be made, as is done in coff-mips.c; | |
9823 | that would be more work, but would require less memory when | |
9824 | the linker is run. */ | |
35c08157 | 9825 | |
1c8f6a4d KLC |
9826 | if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size |
9827 | && foff < ACCURATE_8BIT_S1 - first_size) | |
9828 | { | |
9829 | if (!(seq_len & 0x2)) | |
9830 | { | |
9831 | /* Don't convert it to 16-bit now, keep this as relaxable | |
9832 | for ``label reloc; INSN1a''6. */ | |
9833 | /* Save comp_insn32 to buffer. */ | |
9834 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9835 | *insn_len = 4; | |
9836 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? | |
9837 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; | |
9838 | cond_reloc = R_NDS32_INSN16; | |
9839 | } | |
9840 | else | |
9841 | { | |
9842 | /* Not optimize for speed; convert sequence to 16-bit. */ | |
9843 | /* Save comp_insn16 to buffer. */ | |
9844 | bfd_putb16 (re_insn16, contents + irel->r_offset); | |
9845 | *insn_len = 2; | |
9846 | reloc = R_NDS32_9_PCREL_RELA; | |
9847 | cond_reloc = R_NDS32_NONE; | |
9848 | } | |
9849 | cond_removed = 1; | |
9850 | } | |
9851 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 | |
9852 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) | |
9853 | && foff < ACCURATE_14BIT_S1 - first_size)) | |
9854 | { | |
9855 | /* beqs label ; 15_PCREL */ | |
9856 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9857 | *insn_len = 4; | |
9858 | reloc = R_NDS32_15_PCREL_RELA; | |
9859 | cond_reloc = R_NDS32_NONE; | |
9860 | cond_removed = 1; | |
9861 | } | |
9862 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
9863 | && foff >= -CONSERVATIVE_16BIT_S1 | |
9864 | && foff < CONSERVATIVE_16BIT_S1) | |
9865 | { | |
9866 | /* beqz label ; 17_PCREL */ | |
9867 | bfd_putb32 (re_insn, contents + irel->r_offset); | |
9868 | *insn_len = 4; | |
9869 | reloc = R_NDS32_17_PCREL_RELA; | |
9870 | cond_reloc = R_NDS32_NONE; | |
9871 | cond_removed = 1; | |
9872 | } | |
9873 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
9874 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
9875 | { | |
9876 | /* Relax to one of the following 3 variations | |
9877 | ||
9878 | case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize | |
9879 | for space | |
9880 | bnes38 rt, $1 ; LONGJUMP2 | |
9881 | j label ; 25_PCREL | |
9882 | $1 | |
9883 | ||
9884 | case 4-4; 1st insn not convertible, others don't care | |
9885 | bne rt, ra, $1 ; LONGJUMP2 | |
9886 | j label ; 25_PCREL | |
9887 | $1 | |
9888 | ||
9889 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed | |
9890 | bne rt, ra, $1 ; LONGJUMP2 | |
9891 | j label ; 25_PCREL | |
9892 | $1 */ | |
9893 | ||
9894 | /* Offset for first instruction. */ | |
9895 | ||
9896 | /* Use j label as second instruction. */ | |
9897 | *insn_len = 4 + first_size; | |
9898 | insn = INSN_J; | |
9899 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); | |
9900 | reloc = R_NDS32_LONGJUMP2; | |
9901 | cond_reloc = R_NDS32_25_PLTREL; | |
9902 | } | |
9903 | else | |
9904 | return FALSE; | |
35c08157 | 9905 | |
1c8f6a4d KLC |
9906 | if (cond_removed == 1) |
9907 | { | |
9908 | /* Set all relocations. */ | |
9909 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); | |
9910 | irel->r_addend = hi_irelfn->r_addend; | |
9911 | ||
9912 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), | |
9913 | cond_reloc); | |
9914 | cond_irelfn->r_addend = 0; | |
9915 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9916 | R_NDS32_NONE); | |
9917 | } | |
9918 | else | |
9919 | { | |
9920 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
9921 | irel->r_addend = irel->r_addend; | |
9922 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), | |
9923 | cond_reloc); | |
9924 | } | |
35c08157 | 9925 | |
1c8f6a4d KLC |
9926 | if ((seq_len ^ *insn_len ) & 0x2) |
9927 | { | |
9928 | insn16 = NDS32_NOP16; | |
9929 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); | |
9930 | lo_irelfn->r_offset = *insn_len; | |
9931 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9932 | R_NDS32_INSN16); | |
9933 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
9934 | *insn_len += 2; | |
9935 | } | |
9936 | else | |
9937 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), | |
9938 | R_NDS32_NONE); | |
9939 | return TRUE; | |
9940 | } | |
35c08157 | 9941 | |
1c8f6a4d | 9942 | /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */ |
35c08157 | 9943 | |
1c8f6a4d KLC |
9944 | static bfd_boolean |
9945 | nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
9946 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
9947 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
9948 | Elf_Internal_Shdr *symtab_hdr) | |
9949 | { | |
9950 | /* The pattern for LONGCALL4. Support for function cse. | |
9951 | sethi ta, hi20(symbol) ; LONGCALL4/HI20 | |
9952 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
9953 | jral ta ; PTR_RES/EMPTY/INSN16 */ | |
35c08157 | 9954 | |
1c8f6a4d KLC |
9955 | bfd_vma laddr; |
9956 | uint32_t insn; | |
9957 | Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel; | |
9958 | Elf_Internal_Rela *irelend; | |
9959 | int pic_ext_target = 0; | |
9960 | bfd_signed_vma foff; | |
35c08157 | 9961 | |
1c8f6a4d KLC |
9962 | irelend = internal_relocs + sec->reloc_count; |
9963 | laddr = irel->r_offset; | |
35c08157 | 9964 | |
1c8f6a4d KLC |
9965 | /* Get the reloc for the address from which the register is |
9966 | being loaded. This reloc will tell us which function is | |
9967 | actually being called. */ | |
9968 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
9969 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 9970 | |
1c8f6a4d KLC |
9971 | if (hi_irel == irelend) |
9972 | { | |
9973 | (*_bfd_error_handler) | |
9974 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" | |
9975 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
9976 | return FALSE; | |
9977 | } | |
35c08157 | 9978 | |
1c8f6a4d KLC |
9979 | /* Get the value of the symbol referred to by the reloc. */ |
9980 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
9981 | &pic_ext_target); | |
35c08157 | 9982 | |
1c8f6a4d KLC |
9983 | /* This condition only happened when symbol is undefined. */ |
9984 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 | |
9985 | || foff >= CONSERVATIVE_24BIT_S1) | |
9986 | return FALSE; | |
35c08157 | 9987 | |
1c8f6a4d KLC |
9988 | /* Relax to: jal symbol; 25_PCREL */ |
9989 | /* For simplicity of coding, we are going to modify the section | |
9990 | contents, the section relocs, and the BFD symbol table. We | |
9991 | must tell the rest of the code not to free up this | |
9992 | information. It would be possible to instead create a table | |
9993 | of changes which have to be made, as is done in coff-mips.c; | |
9994 | that would be more work, but would require less memory when | |
9995 | the linker is run. */ | |
35c08157 | 9996 | |
1c8f6a4d KLC |
9997 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
9998 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
9999 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10000 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10001 | |
1c8f6a4d KLC |
10002 | if (ptr_irel == irelend || em_irel == irelend) |
10003 | { | |
10004 | (*_bfd_error_handler) | |
10005 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" | |
10006 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10007 | return FALSE; | |
10008 | } | |
10009 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ | |
10010 | insn = bfd_getb32 (contents + irel->r_addend); | |
10011 | if (insn & 0x80000000) | |
10012 | return FALSE; | |
35c08157 | 10013 | |
1c8f6a4d KLC |
10014 | /* Replace the long call with a jal. */ |
10015 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
10016 | R_NDS32_25_PCREL_RELA); | |
10017 | ptr_irel->r_addend = 1; | |
35c08157 | 10018 | |
1c8f6a4d KLC |
10019 | /* We don't resolve this here but resolve it in relocate_section. */ |
10020 | insn = INSN_JAL; | |
10021 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10022 | |
1c8f6a4d KLC |
10023 | irel->r_info = |
10024 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10025 | |
1c8f6a4d KLC |
10026 | /* If there is function cse, HI20 can not remove now. */ |
10027 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10028 | R_NDS32_LONGCALL4, laddr); | |
10029 | if (call_irel == irelend) | |
10030 | { | |
10031 | *insn_len = 0; | |
10032 | hi_irel->r_info = | |
10033 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
10034 | } | |
35c08157 | 10035 | |
1c8f6a4d KLC |
10036 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10037 | R_NDS32_INSN16, irel->r_addend); | |
10038 | if (insn_irel != irelend) | |
10039 | insn_irel->r_info = | |
10040 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10041 | |
1c8f6a4d KLC |
10042 | return TRUE; |
10043 | } | |
35c08157 | 10044 | |
1c8f6a4d | 10045 | /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */ |
35c08157 | 10046 | |
1c8f6a4d KLC |
10047 | static bfd_boolean |
10048 | nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10049 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10050 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10051 | Elf_Internal_Shdr *symtab_hdr) | |
10052 | { | |
10053 | /* The pattern for LONGCALL5. | |
10054 | bltz rt, .L1 ; LONGCALL5/17_PCREL | |
10055 | jal symbol ; 25_PCREL | |
10056 | .L1: */ | |
35c08157 | 10057 | |
1c8f6a4d KLC |
10058 | bfd_vma laddr; |
10059 | uint32_t insn; | |
10060 | Elf_Internal_Rela *cond_irel, *irelend; | |
10061 | int pic_ext_target = 0; | |
10062 | bfd_signed_vma foff; | |
35c08157 | 10063 | |
1c8f6a4d KLC |
10064 | irelend = internal_relocs + sec->reloc_count; |
10065 | laddr = irel->r_offset; | |
10066 | insn = bfd_getb32 (contents + laddr); | |
35c08157 | 10067 | |
1c8f6a4d KLC |
10068 | /* Get the reloc for the address from which the register is |
10069 | being loaded. This reloc will tell us which function is | |
10070 | actually being called. */ | |
10071 | cond_irel = | |
10072 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10073 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
10074 | if (cond_irel == irelend) | |
10075 | { | |
10076 | (*_bfd_error_handler) | |
10077 | ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized" | |
10078 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10079 | return FALSE; | |
10080 | } | |
35c08157 | 10081 | |
1c8f6a4d KLC |
10082 | /* Get the value of the symbol referred to by the reloc. */ |
10083 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10084 | &pic_ext_target); | |
35c08157 | 10085 | |
1c8f6a4d KLC |
10086 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
10087 | || foff >= CONSERVATIVE_16BIT_S1) | |
10088 | return FALSE; | |
35c08157 | 10089 | |
1c8f6a4d KLC |
10090 | /* Relax to bgezal rt, label ; 17_PCREL |
10091 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 10092 | |
1c8f6a4d KLC |
10093 | /* Convert to complimentary conditional call. */ |
10094 | insn = CONVERT_CONDITION_CALL (insn); | |
35c08157 | 10095 | |
1c8f6a4d KLC |
10096 | /* For simplicity of coding, we are going to modify the section |
10097 | contents, the section relocs, and the BFD symbol table. We | |
10098 | must tell the rest of the code not to free up this | |
10099 | information. It would be possible to instead create a table | |
10100 | of changes which have to be made, as is done in coff-mips.c; | |
10101 | that would be more work, but would require less memory when | |
10102 | the linker is run. */ | |
35c08157 | 10103 | |
1c8f6a4d KLC |
10104 | /* Modify relocation and contents. */ |
10105 | cond_irel->r_info = | |
10106 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA); | |
35c08157 | 10107 | |
1c8f6a4d KLC |
10108 | /* Replace the long call with a bgezal. */ |
10109 | bfd_putb32 (insn, contents + cond_irel->r_offset); | |
10110 | *insn_len = 0; | |
35c08157 | 10111 | |
1c8f6a4d KLC |
10112 | /* Clean unnessary relocations. */ |
10113 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10114 | |
1c8f6a4d KLC |
10115 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10116 | R_NDS32_17_PCREL_RELA, laddr); | |
10117 | cond_irel->r_info = | |
10118 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10119 | |
1c8f6a4d KLC |
10120 | return TRUE; |
10121 | } | |
35c08157 | 10122 | |
1c8f6a4d | 10123 | /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */ |
35c08157 | 10124 | |
1c8f6a4d KLC |
10125 | static bfd_boolean |
10126 | nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10127 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10128 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10129 | Elf_Internal_Shdr *symtab_hdr) | |
10130 | { | |
10131 | /* The pattern for LONGCALL6. | |
10132 | bltz rt, .L1 ; LONGCALL6/17_PCREL | |
10133 | sethi ta, hi20(symbol) ; HI20/PTR | |
10134 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10135 | jral ta ; PTR_RES/EMPTY/INSN16 | |
10136 | .L1 */ | |
10137 | ||
10138 | bfd_vma laddr; | |
10139 | uint32_t insn; | |
10140 | Elf_Internal_Rela *em_irel, *cond_irel, *irelend; | |
10141 | int pic_ext_target = 0; | |
10142 | bfd_signed_vma foff; | |
35c08157 | 10143 | |
1c8f6a4d KLC |
10144 | irelend = internal_relocs + sec->reloc_count; |
10145 | laddr = irel->r_offset; | |
35c08157 | 10146 | |
1c8f6a4d KLC |
10147 | /* Get the reloc for the address from which the register is |
10148 | being loaded. This reloc will tell us which function is | |
10149 | actually being called. */ | |
10150 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10151 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10152 | |
1c8f6a4d KLC |
10153 | if (em_irel == irelend) |
10154 | { | |
10155 | (*_bfd_error_handler) | |
10156 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10157 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10158 | return FALSE; | |
10159 | } | |
35c08157 | 10160 | |
1c8f6a4d KLC |
10161 | /* Get the value of the symbol referred to by the reloc. */ |
10162 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
10163 | &pic_ext_target); | |
35c08157 | 10164 | |
1c8f6a4d KLC |
10165 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
10166 | || foff >= CONSERVATIVE_24BIT_S1) | |
10167 | return FALSE; | |
35c08157 | 10168 | |
1c8f6a4d KLC |
10169 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ |
10170 | insn = bfd_getb32 (contents + irel->r_addend); | |
10171 | if (insn & 0x80000000) | |
10172 | return FALSE; | |
35c08157 | 10173 | |
1c8f6a4d KLC |
10174 | insn = bfd_getb32 (contents + laddr); |
10175 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10176 | { | |
10177 | /* Relax to bgezal rt, label ; 17_PCREL | |
10178 | or bltzal rt, label ; 17_PCREL */ | |
35c08157 | 10179 | |
1c8f6a4d KLC |
10180 | /* Convert to complimentary conditional call. */ |
10181 | *insn_len = 0; | |
10182 | insn = CONVERT_CONDITION_CALL (insn); | |
10183 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
10184 | ||
10185 | em_irel->r_info = | |
10186 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA); | |
10187 | ||
10188 | /* Set resolved relocation. */ | |
10189 | cond_irel = | |
10190 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10191 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10192 | if (cond_irel == irelend) | |
35c08157 | 10193 | { |
1c8f6a4d KLC |
10194 | (*_bfd_error_handler) |
10195 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10196 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10197 | return FALSE; | |
10198 | } | |
10199 | cond_irel->r_addend = 1; | |
35c08157 | 10200 | |
1c8f6a4d | 10201 | /* Clear relocations. */ |
35c08157 | 10202 | |
1c8f6a4d KLC |
10203 | irel->r_info = |
10204 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10205 | |
1c8f6a4d KLC |
10206 | cond_irel = |
10207 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10208 | R_NDS32_17_PCREL_RELA, laddr); | |
10209 | if (cond_irel != irelend) | |
10210 | cond_irel->r_info = | |
10211 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10212 | |
1c8f6a4d KLC |
10213 | cond_irel = |
10214 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10215 | R_NDS32_INSN16, irel->r_addend); | |
10216 | if (cond_irel != irelend) | |
10217 | cond_irel->r_info = | |
10218 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10219 | |
1c8f6a4d KLC |
10220 | } |
10221 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) | |
10222 | { | |
10223 | /* Relax to the following instruction sequence | |
10224 | bltz rt, .L1 ; LONGCALL2/17_PCREL | |
10225 | jal symbol ; 25_PCREL/PTR_RES | |
10226 | .L1 */ | |
10227 | *insn_len = 4; | |
10228 | /* Convert instruction. */ | |
10229 | insn = INSN_JAL; | |
10230 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10231 | |
1c8f6a4d KLC |
10232 | /* Convert relocations. */ |
10233 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), | |
10234 | R_NDS32_25_PCREL_RELA); | |
10235 | irel->r_info = | |
10236 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5); | |
35c08157 | 10237 | |
1c8f6a4d KLC |
10238 | /* Set resolved relocation. */ |
10239 | cond_irel = | |
10240 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10241 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10242 | if (cond_irel == irelend) | |
10243 | { | |
10244 | (*_bfd_error_handler) | |
10245 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" | |
10246 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10247 | return FALSE; | |
10248 | } | |
10249 | cond_irel->r_addend = 1; | |
35c08157 | 10250 | |
1c8f6a4d KLC |
10251 | cond_irel = |
10252 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10253 | R_NDS32_INSN16, irel->r_addend); | |
10254 | if (cond_irel != irelend) | |
10255 | cond_irel->r_info = | |
10256 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
10257 | } | |
10258 | return TRUE; | |
10259 | } | |
35c08157 | 10260 | |
1c8f6a4d | 10261 | /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */ |
35c08157 | 10262 | |
1c8f6a4d KLC |
10263 | static bfd_boolean |
10264 | nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10265 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10266 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10267 | Elf_Internal_Shdr *symtab_hdr) | |
10268 | { | |
10269 | /* The pattern for LONGJUMP4. | |
10270 | sethi ta, hi20(symbol) ; LONGJUMP4/HI20 | |
10271 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10272 | jr ta ; PTR_RES/INSN16/EMPTY */ | |
10273 | ||
10274 | bfd_vma laddr; | |
10275 | int seq_len; /* Original length of instruction sequence. */ | |
10276 | uint32_t insn; | |
10277 | Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend; | |
10278 | int pic_ext_target = 0; | |
10279 | bfd_signed_vma foff; | |
35c08157 | 10280 | |
1c8f6a4d KLC |
10281 | irelend = internal_relocs + sec->reloc_count; |
10282 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10283 | laddr = irel->r_offset; | |
10284 | *insn_len = seq_len; | |
35c08157 | 10285 | |
1c8f6a4d KLC |
10286 | /* Get the reloc for the address from which the register is |
10287 | being loaded. This reloc will tell us which function is | |
10288 | actually being called. */ | |
35c08157 | 10289 | |
1c8f6a4d KLC |
10290 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
10291 | R_NDS32_HI20_RELA, laddr); | |
35c08157 | 10292 | |
1c8f6a4d KLC |
10293 | if (hi_irel == irelend) |
10294 | { | |
10295 | (*_bfd_error_handler) | |
10296 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" | |
10297 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10298 | return FALSE; | |
10299 | } | |
35c08157 | 10300 | |
1c8f6a4d KLC |
10301 | /* Get the value of the symbol referred to by the reloc. */ |
10302 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, | |
10303 | &pic_ext_target); | |
35c08157 | 10304 | |
1c8f6a4d KLC |
10305 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
10306 | || foff < -CONSERVATIVE_24BIT_S1) | |
10307 | return FALSE; | |
35c08157 | 10308 | |
1c8f6a4d KLC |
10309 | /* Convert it to "j label", it may be converted to j8 in the final |
10310 | pass of relaxation. Therefore, we do not consider this currently. */ | |
10311 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10312 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
10313 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10314 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10315 | |
1c8f6a4d KLC |
10316 | if (ptr_irel == irelend || em_irel == irelend) |
10317 | { | |
10318 | (*_bfd_error_handler) | |
10319 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" | |
10320 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10321 | return FALSE; | |
10322 | } | |
35c08157 | 10323 | |
1c8f6a4d KLC |
10324 | em_irel->r_info = |
10325 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA); | |
10326 | ptr_irel->r_addend = 1; | |
35c08157 | 10327 | |
1c8f6a4d KLC |
10328 | /* Write instruction. */ |
10329 | insn = INSN_J; | |
10330 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
35c08157 | 10331 | |
1c8f6a4d KLC |
10332 | /* Clear relocations. */ |
10333 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10334 | |
1c8f6a4d KLC |
10335 | /* If there is function cse, HI20 can not remove now. */ |
10336 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10337 | R_NDS32_LONGJUMP4, laddr); | |
10338 | if (call_irel == irelend) | |
10339 | { | |
10340 | *insn_len = 0; | |
10341 | hi_irel->r_info = | |
10342 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); | |
10343 | } | |
35c08157 | 10344 | |
1c8f6a4d KLC |
10345 | return TRUE; |
10346 | } | |
35c08157 | 10347 | |
1c8f6a4d | 10348 | /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */ |
35c08157 | 10349 | |
1c8f6a4d KLC |
10350 | static bfd_boolean |
10351 | nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10352 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10353 | int *seq_len, bfd_byte *contents, | |
10354 | Elf_Internal_Sym *isymbuf, | |
10355 | Elf_Internal_Shdr *symtab_hdr) | |
10356 | { | |
10357 | /* There are 2 variations for LONGJUMP5 | |
10358 | case 2-4; 1st insn convertible, 16-bit on. | |
10359 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10360 | j label ; 25_PCREL/INSN16 | |
10361 | $1: | |
10362 | ||
10363 | case 4-4; 1st insn not convertible | |
10364 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10365 | j label ; 25_PCREL/INSN16 | |
10366 | .L1: */ | |
10367 | ||
10368 | bfd_vma laddr; | |
10369 | Elf_Internal_Rela *cond_irel, *irelend; | |
10370 | int pic_ext_target = 0; | |
10371 | unsigned int i; | |
10372 | bfd_signed_vma foff; | |
10373 | uint32_t insn, re_insn = 0; | |
10374 | uint16_t insn16, re_insn16 = 0; | |
10375 | unsigned long reloc; | |
35c08157 | 10376 | |
1c8f6a4d KLC |
10377 | enum elf_nds32_reloc_type checked_types[] = |
10378 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10379 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
35c08157 | 10380 | |
1c8f6a4d KLC |
10381 | irelend = internal_relocs + sec->reloc_count; |
10382 | laddr = irel->r_offset; | |
35c08157 | 10383 | |
1c8f6a4d KLC |
10384 | /* Get the reloc for the address from which the register is |
10385 | being loaded. This reloc will tell us which function is | |
10386 | actually being called. */ | |
35c08157 | 10387 | |
1c8f6a4d KLC |
10388 | cond_irel = |
10389 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10390 | R_NDS32_25_PCREL_RELA, irel->r_addend); | |
10391 | if (cond_irel == irelend) | |
10392 | { | |
10393 | (*_bfd_error_handler) | |
10394 | ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized" | |
10395 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10396 | return FALSE; | |
10397 | } | |
35c08157 | 10398 | |
1c8f6a4d KLC |
10399 | /* Get the value of the symbol referred to by the reloc. */ |
10400 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10401 | &pic_ext_target); | |
35c08157 | 10402 | |
1c8f6a4d KLC |
10403 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
10404 | || foff >= CONSERVATIVE_16BIT_S1) | |
10405 | return FALSE; | |
35c08157 | 10406 | |
1c8f6a4d KLC |
10407 | /* Get the all corresponding instructions. */ |
10408 | insn = bfd_getb32 (contents + laddr); | |
10409 | /* Check instruction size. */ | |
10410 | if (insn & 0x80000000) | |
10411 | { | |
10412 | *seq_len = 0; | |
10413 | insn16 = insn >> 16; | |
10414 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10415 | } | |
10416 | else | |
10417 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10418 | |
1c8f6a4d KLC |
10419 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10420 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10421 | { | |
10422 | /* beqs label ; 15_PCREL. */ | |
10423 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10424 | reloc = R_NDS32_15_PCREL_RELA; | |
10425 | } | |
10426 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10427 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10428 | { | |
10429 | /* beqz label ; 17_PCREL. */ | |
10430 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10431 | reloc = R_NDS32_17_PCREL_RELA; | |
10432 | } | |
10433 | else if ( N32_OP6 (re_insn) == N32_OP6_BR3 | |
10434 | && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1) | |
10435 | { | |
10436 | /* beqc label ; 9_PCREL. */ | |
10437 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); | |
10438 | reloc = R_NDS32_WORD_9_PCREL_RELA; | |
10439 | } | |
10440 | else | |
10441 | return FALSE; | |
35c08157 | 10442 | |
1c8f6a4d KLC |
10443 | /* Set all relocations. */ |
10444 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc); | |
35c08157 | 10445 | |
1c8f6a4d KLC |
10446 | /* Clean relocations. */ |
10447 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10448 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) | |
10449 | { | |
10450 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10451 | checked_types[i], laddr); | |
10452 | if (cond_irel != irelend) | |
10453 | { | |
10454 | if (*seq_len == 0 | |
10455 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
35c08157 | 10456 | { |
1c8f6a4d KLC |
10457 | /* If the branch instruction is 2 byte, it cannot remove |
10458 | directly. Only convert it to nop16 and remove it after | |
10459 | checking alignment issue. */ | |
10460 | insn16 = NDS32_NOP16; | |
10461 | bfd_putb16 (insn16, contents + laddr); | |
10462 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 KLC |
10463 | } |
10464 | else | |
1c8f6a4d KLC |
10465 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
10466 | R_NDS32_NONE); | |
35c08157 | 10467 | } |
1c8f6a4d KLC |
10468 | } |
10469 | *insn_len = 0; | |
35c08157 | 10470 | |
1c8f6a4d KLC |
10471 | return TRUE; |
10472 | } | |
35c08157 | 10473 | |
1c8f6a4d | 10474 | /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */ |
35c08157 | 10475 | |
1c8f6a4d KLC |
10476 | static bfd_boolean |
10477 | nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10478 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10479 | int *seq_len, bfd_byte *contents, | |
10480 | Elf_Internal_Sym *isymbuf, | |
10481 | Elf_Internal_Shdr *symtab_hdr) | |
10482 | { | |
10483 | /* There are 5 variations for LONGJUMP6 | |
10484 | case : 2-4-4-4; 1st insn convertible, 16-bit on. | |
10485 | bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10486 | sethi ta, hi20(symbol) ; HI20/PTR | |
10487 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10488 | jr ta ; PTR_RES/INSN16/EMPTY | |
10489 | .L1: | |
10490 | ||
10491 | case : 4-4-4-4; 1st insn not convertible, 16-bit on. | |
10492 | bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 | |
10493 | sethi ta, hi20(symbol) ; HI20/PTR | |
10494 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR | |
10495 | jr ta ; PTR_RES/INSN16/EMPTY | |
10496 | .L1: */ | |
10497 | ||
10498 | enum elf_nds32_reloc_type checked_types[] = | |
10499 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, | |
10500 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; | |
10501 | ||
10502 | int reloc_off = 0, cond_removed = 0; | |
10503 | bfd_vma laddr; | |
10504 | Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel; | |
10505 | int pic_ext_target = 0; | |
10506 | unsigned int i; | |
10507 | bfd_signed_vma foff; | |
10508 | uint32_t insn, re_insn = 0; | |
10509 | uint16_t insn16, re_insn16 = 0; | |
10510 | unsigned long reloc; | |
35c08157 | 10511 | |
1c8f6a4d KLC |
10512 | irelend = internal_relocs + sec->reloc_count; |
10513 | laddr = irel->r_offset; | |
35c08157 | 10514 | |
1c8f6a4d KLC |
10515 | /* Get the reloc for the address from which the register is |
10516 | being loaded. This reloc will tell us which function is | |
10517 | actually being called. */ | |
10518 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10519 | R_NDS32_EMPTY, irel->r_addend); | |
35c08157 | 10520 | |
1c8f6a4d KLC |
10521 | if (em_irel == irelend) |
10522 | { | |
10523 | (*_bfd_error_handler) | |
10524 | ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized" | |
10525 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10526 | return FALSE; | |
10527 | } | |
35c08157 | 10528 | |
1c8f6a4d KLC |
10529 | /* Get the value of the symbol referred to by the reloc. */ |
10530 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, | |
10531 | &pic_ext_target); | |
35c08157 | 10532 | |
1c8f6a4d KLC |
10533 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
10534 | || foff >= CONSERVATIVE_24BIT_S1) | |
10535 | return FALSE; | |
35c08157 | 10536 | |
1c8f6a4d KLC |
10537 | insn = bfd_getb32 (contents + laddr); |
10538 | /* Check instruction size. */ | |
10539 | if (insn & 0x80000000) | |
10540 | { | |
10541 | *seq_len = 0; | |
10542 | insn16 = insn >> 16; | |
10543 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); | |
10544 | } | |
10545 | else | |
10546 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); | |
35c08157 | 10547 | |
1c8f6a4d KLC |
10548 | /* For simplicity of coding, we are going to modify the section |
10549 | contents, the section relocs, and the BFD symbol table. We | |
10550 | must tell the rest of the code not to free up this | |
10551 | information. It would be possible to instead create a table | |
10552 | of changes which have to be made, as is done in coff-mips.c; | |
10553 | that would be more work, but would require less memory when | |
10554 | the linker is run. */ | |
35c08157 | 10555 | |
1c8f6a4d KLC |
10556 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
10557 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) | |
10558 | { | |
10559 | /* beqs label ; 15_PCREL */ | |
10560 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10561 | reloc = R_NDS32_15_PCREL_RELA; | |
10562 | cond_removed = 1; | |
10563 | } | |
10564 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 | |
10565 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) | |
10566 | { | |
10567 | /* beqz label ; 17_PCREL */ | |
10568 | bfd_putb32 (re_insn, contents + em_irel->r_offset); | |
10569 | reloc = R_NDS32_17_PCREL_RELA; | |
10570 | cond_removed = 1; | |
10571 | } | |
10572 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off | |
10573 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) | |
10574 | { | |
10575 | /* Relax to one of the following 2 variations | |
35c08157 | 10576 | |
1c8f6a4d KLC |
10577 | case 2-4; 1st insn convertible, 16-bit on. |
10578 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 | |
10579 | j label ; 25_PCREL/INSN16 | |
10580 | $1: | |
35c08157 | 10581 | |
1c8f6a4d KLC |
10582 | case 4-4; 1st insn not convertible |
10583 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 | |
10584 | j label ; 25_PCREL/INSN16 | |
10585 | .L1: */ | |
35c08157 | 10586 | |
1c8f6a4d KLC |
10587 | /* Use j label as second instruction. */ |
10588 | insn = INSN_J; | |
10589 | reloc = R_NDS32_25_PCREL_RELA; | |
10590 | bfd_putb32 (insn, contents + em_irel->r_offset); | |
10591 | } | |
10592 | else | |
10593 | return FALSE; | |
35c08157 | 10594 | |
1c8f6a4d KLC |
10595 | /* Set all relocations. */ |
10596 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc); | |
35c08157 | 10597 | |
1c8f6a4d KLC |
10598 | cond_irel = |
10599 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10600 | R_NDS32_PTR_RESOLVED, em_irel->r_offset); | |
10601 | cond_irel->r_addend = 1; | |
35c08157 | 10602 | |
1c8f6a4d KLC |
10603 | /* Use INSN16 of first branch instruction to distinguish if keeping |
10604 | INSN16 of final instruction or not. */ | |
10605 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10606 | R_NDS32_INSN16, irel->r_offset); | |
10607 | if (insn_irel == irelend) | |
10608 | { | |
10609 | /* Clean the final INSN16. */ | |
10610 | insn_irel = | |
10611 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10612 | R_NDS32_INSN16, em_irel->r_offset); | |
10613 | insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10614 | R_NDS32_NONE); | |
10615 | } | |
10616 | ||
10617 | if (cond_removed == 1) | |
10618 | { | |
10619 | *insn_len = 0; | |
10620 | ||
10621 | /* Clear relocations. */ | |
10622 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 10623 | |
1c8f6a4d KLC |
10624 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
10625 | { | |
10626 | cond_irel = | |
10627 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10628 | checked_types[i], laddr); | |
10629 | if (cond_irel != irelend) | |
35c08157 | 10630 | { |
1c8f6a4d KLC |
10631 | if (*seq_len == 0 |
10632 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) | |
10633 | { | |
10634 | /* If the branch instruction is 2 byte, it cannot remove | |
10635 | directly. Only convert it to nop16 and remove it after | |
10636 | checking alignment issue. */ | |
10637 | insn16 = NDS32_NOP16; | |
10638 | bfd_putb16 (insn16, contents + laddr); | |
10639 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
10640 | } | |
10641 | else | |
10642 | cond_irel->r_info = | |
10643 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); | |
35c08157 | 10644 | } |
35c08157 | 10645 | } |
1c8f6a4d KLC |
10646 | } |
10647 | else | |
10648 | { | |
10649 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
10650 | R_NDS32_LONGJUMP5); | |
10651 | } | |
35c08157 | 10652 | |
1c8f6a4d KLC |
10653 | return TRUE; |
10654 | } | |
35c08157 | 10655 | |
1c8f6a4d | 10656 | /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */ |
35c08157 | 10657 | |
1c8f6a4d KLC |
10658 | static bfd_boolean |
10659 | nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
10660 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10661 | int *seq_len, bfd_byte *contents, | |
10662 | Elf_Internal_Sym *isymbuf, | |
10663 | Elf_Internal_Shdr *symtab_hdr) | |
10664 | { | |
10665 | /* There are 2 variations for LONGJUMP5 | |
10666 | case 2-4; 1st insn convertible, 16-bit on. | |
10667 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10668 | beq rt, ta, label ; 15_PCREL | |
10669 | ||
10670 | case 4-4; 1st insn not convertible | |
10671 | movi55 ta, imm11 ; LONGJUMP7/INSN16 | |
10672 | beq rt, ta, label ; 15_PCREL */ | |
10673 | ||
10674 | bfd_vma laddr; | |
10675 | Elf_Internal_Rela *cond_irel, *irelend, *insn_irel; | |
10676 | int pic_ext_target = 0; | |
10677 | bfd_signed_vma foff; | |
10678 | uint32_t insn, re_insn = 0; | |
10679 | uint16_t insn16; | |
10680 | uint32_t imm11; | |
35c08157 | 10681 | |
1c8f6a4d KLC |
10682 | irelend = internal_relocs + sec->reloc_count; |
10683 | laddr = irel->r_offset; | |
35c08157 | 10684 | |
1c8f6a4d KLC |
10685 | /* Get the reloc for the address from which the register is |
10686 | being loaded. This reloc will tell us which function is | |
10687 | actually being called. */ | |
35c08157 | 10688 | |
1c8f6a4d KLC |
10689 | cond_irel = |
10690 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10691 | R_NDS32_15_PCREL_RELA, irel->r_addend); | |
10692 | if (cond_irel == irelend) | |
10693 | { | |
10694 | (*_bfd_error_handler) | |
10695 | ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized" | |
10696 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10697 | return FALSE; | |
10698 | } | |
35c08157 | 10699 | |
1c8f6a4d KLC |
10700 | /* Get the value of the symbol referred to by the reloc. */ |
10701 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, | |
10702 | &pic_ext_target); | |
35c08157 | 10703 | |
1c8f6a4d KLC |
10704 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1 |
10705 | || foff >= CONSERVATIVE_8BIT_S1) | |
10706 | return FALSE; | |
35c08157 | 10707 | |
1c8f6a4d KLC |
10708 | /* Get the first instruction for its size. */ |
10709 | insn = bfd_getb32 (contents + laddr); | |
10710 | if (insn & 0x80000000) | |
10711 | { | |
10712 | *seq_len = 0; | |
10713 | /* Get the immediate from movi55. */ | |
10714 | imm11 = N16_IMM5S (insn >> 16); | |
10715 | } | |
10716 | else | |
10717 | { | |
10718 | /* Get the immediate from movi. */ | |
10719 | imm11 = N32_IMM20S (insn); | |
35c08157 KLC |
10720 | } |
10721 | ||
1c8f6a4d KLC |
10722 | /* Get the branch instruction. */ |
10723 | insn = bfd_getb32 (contents + irel->r_addend); | |
10724 | /* Convert instruction to BR3. */ | |
10725 | if ((insn >> 14) & 0x1) | |
10726 | re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0); | |
10727 | else | |
10728 | re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0); | |
35c08157 | 10729 | |
1c8f6a4d | 10730 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
35c08157 | 10731 | |
1c8f6a4d KLC |
10732 | /* Set all relocations. */ |
10733 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10734 | R_NDS32_WORD_9_PCREL_RELA); | |
10735 | ||
10736 | /* Clean relocations. */ | |
10737 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10738 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10739 | R_NDS32_INSN16, irel->r_offset); | |
10740 | if (insn_irel != irelend) | |
10741 | { | |
10742 | if (*seq_len == 0) | |
35c08157 | 10743 | { |
1c8f6a4d KLC |
10744 | /* If the first insntruction is 16bit, convert it to nop16. */ |
10745 | insn16 = NDS32_NOP16; | |
10746 | bfd_putb16 (insn16, contents + laddr); | |
10747 | insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; | |
35c08157 | 10748 | } |
1c8f6a4d KLC |
10749 | else |
10750 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), | |
10751 | R_NDS32_NONE); | |
35c08157 | 10752 | } |
1c8f6a4d | 10753 | *insn_len = 0; |
35c08157 | 10754 | |
1c8f6a4d KLC |
10755 | return TRUE; |
10756 | } | |
35c08157 | 10757 | |
1c8f6a4d | 10758 | #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f) |
35c08157 | 10759 | |
1c8f6a4d | 10760 | /* Relax LOADSTORE relocation for nds32_elf_relax_section. */ |
35c08157 | 10761 | |
1c8f6a4d KLC |
10762 | static bfd_boolean |
10763 | nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd, | |
10764 | asection *sec, Elf_Internal_Rela *irel, | |
10765 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
10766 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
10767 | Elf_Internal_Shdr *symtab_hdr, int load_store_relax) | |
10768 | { | |
10769 | int eliminate_sethi = 0, range_type, i; | |
10770 | bfd_vma local_sda, laddr; | |
10771 | int seq_len; /* Original length of instruction sequence. */ | |
10772 | uint32_t insn; | |
10773 | Elf_Internal_Rela *hi_irelfn = NULL, *irelend; | |
10774 | bfd_vma access_addr = 0; | |
10775 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10776 | enum elf_nds32_reloc_type checked_types[] = | |
10777 | { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20, | |
10778 | R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20, | |
10779 | R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20, | |
10780 | R_NDS32_TLS_LE_HI20 | |
10781 | }; | |
35c08157 | 10782 | |
1c8f6a4d KLC |
10783 | irelend = internal_relocs + sec->reloc_count; |
10784 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
10785 | laddr = irel->r_offset; | |
10786 | *insn_len = seq_len; | |
35c08157 | 10787 | |
1c8f6a4d KLC |
10788 | /* Get the high part relocation. */ |
10789 | for (i = 0; (unsigned) i < sizeof (checked_types); i++) | |
10790 | { | |
10791 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
10792 | checked_types[i], laddr); | |
10793 | if (hi_irelfn != irelend) | |
10794 | break; | |
10795 | } | |
35c08157 | 10796 | |
1c8f6a4d KLC |
10797 | if (hi_irelfn == irelend) |
10798 | { | |
10799 | (*_bfd_error_handler) | |
10800 | ("%B: warning: R_NDS32_LOADSTORE points to unrecognized" | |
10801 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); | |
10802 | return FALSE; | |
10803 | } | |
35c08157 | 10804 | |
1c8f6a4d KLC |
10805 | range_type = GET_LOADSTORE_RANGE (irel->r_addend); |
10806 | nds32_elf_final_sda_base (sec->output_section->owner, | |
10807 | link_info, &local_sda, FALSE); | |
35c08157 | 10808 | |
1c8f6a4d KLC |
10809 | switch (ELF32_R_TYPE (hi_irelfn->r_info)) |
10810 | { | |
10811 | case R_NDS32_HI20_RELA: | |
10812 | insn = bfd_getb32 (contents + laddr); | |
10813 | access_addr = | |
10814 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10815 | ||
10816 | if (range_type == NDS32_LOADSTORE_IMM) | |
10817 | { | |
10818 | struct elf_link_hash_entry *h = NULL; | |
10819 | int indx; | |
35c08157 | 10820 | |
1c8f6a4d | 10821 | if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info) |
35c08157 | 10822 | { |
1c8f6a4d KLC |
10823 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
10824 | h = elf_sym_hashes (abfd)[indx]; | |
35c08157 | 10825 | } |
35c08157 | 10826 | |
1c8f6a4d KLC |
10827 | if ((access_addr < CONSERVATIVE_20BIT) |
10828 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
35c08157 | 10829 | { |
1c8f6a4d KLC |
10830 | eliminate_sethi = 1; |
10831 | break; | |
35c08157 | 10832 | } |
1c8f6a4d KLC |
10833 | |
10834 | /* This is avoid to relax symbol address which is fixed | |
10835 | relocations. Ex: _stack. */ | |
10836 | if (h && bfd_is_abs_section (h->root.u.def.section)) | |
10837 | return FALSE; | |
10838 | } | |
10839 | ||
10840 | if (!load_store_relax) | |
10841 | return FALSE; | |
10842 | ||
10843 | /* Case for set gp register. */ | |
10844 | if (N32_RT5 (insn) == REG_GP) | |
10845 | break; | |
10846 | ||
10847 | if (range_type == NDS32_LOADSTORE_FLOAT_S | |
10848 | || range_type == NDS32_LOADSTORE_FLOAT_S) | |
10849 | { | |
10850 | range_l = sdata_range[0][0]; | |
10851 | range_h = sdata_range[0][1]; | |
10852 | } | |
10853 | else | |
10854 | { | |
10855 | range_l = sdata_range[1][0]; | |
10856 | range_h = sdata_range[1][1]; | |
10857 | } | |
10858 | break; | |
10859 | ||
10860 | case R_NDS32_GOT_HI20: | |
10861 | access_addr = | |
10862 | calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr); | |
10863 | ||
10864 | /* If this symbol is not in .got, the return value will be -1. | |
10865 | Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE, | |
10866 | a negative offset is allowed. */ | |
10867 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10868 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10869 | eliminate_sethi = 1; | |
10870 | break; | |
10871 | ||
10872 | case R_NDS32_PLT_GOTREL_HI20: | |
10873 | access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf, | |
10874 | hi_irelfn, symtab_hdr); | |
10875 | ||
10876 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10877 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10878 | eliminate_sethi = 1; | |
10879 | break; | |
10880 | ||
10881 | case R_NDS32_GOTOFF_HI20: | |
10882 | access_addr = | |
10883 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10884 | ||
10885 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT | |
10886 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) | |
10887 | eliminate_sethi = 1; | |
10888 | break; | |
10889 | ||
10890 | case R_NDS32_GOTPC_HI20: | |
10891 | /* The access_addr must consider r_addend of hi_irel. */ | |
10892 | access_addr = sec->output_section->vma + sec->output_offset | |
10893 | + irel->r_offset + hi_irelfn->r_addend; | |
10894 | ||
10895 | if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT | |
10896 | && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT) | |
10897 | eliminate_sethi = 1; | |
10898 | break; | |
10899 | ||
10900 | case R_NDS32_TLS_LE_HI20: | |
10901 | access_addr = | |
10902 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); | |
10903 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
10904 | access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
10905 | if ((range_type == NDS32_LOADSTORE_IMM) | |
10906 | && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT | |
10907 | && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT) | |
10908 | eliminate_sethi = 1; | |
10909 | break; | |
10910 | ||
10911 | default: | |
10912 | return FALSE; | |
10913 | } | |
10914 | ||
10915 | /* Delete sethi instruction. */ | |
10916 | if (eliminate_sethi == 1 | |
10917 | || (local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
10918 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
10919 | { | |
10920 | hi_irelfn->r_info = | |
10921 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); | |
10922 | irel->r_info = | |
10923 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
10924 | *insn_len = 0; | |
10925 | } | |
10926 | return TRUE; | |
10927 | } | |
10928 | ||
10929 | /* Relax LO12 relocation for nds32_elf_relax_section. */ | |
10930 | ||
10931 | static void | |
10932 | nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd, | |
10933 | asection *sec, Elf_Internal_Rela *irel, | |
10934 | Elf_Internal_Rela *internal_relocs, bfd_byte *contents, | |
10935 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr) | |
10936 | { | |
10937 | uint32_t insn; | |
10938 | bfd_vma local_sda, laddr; | |
10939 | unsigned long reloc; | |
10940 | bfd_vma access_addr; | |
10941 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ | |
10942 | Elf_Internal_Rela *irelfn = NULL, *irelend; | |
10943 | struct elf_link_hash_entry *h = NULL; | |
10944 | int indx; | |
10945 | ||
10946 | /* For SDA base relative relaxation. */ | |
10947 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
10948 | &local_sda, FALSE); | |
10949 | ||
10950 | irelend = internal_relocs + sec->reloc_count; | |
10951 | laddr = irel->r_offset; | |
10952 | insn = bfd_getb32 (contents + laddr); | |
10953 | ||
10954 | if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI) | |
10955 | return; | |
10956 | ||
10957 | access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
10958 | ||
10959 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) | |
10960 | { | |
10961 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
10962 | h = elf_sym_hashes (abfd)[indx]; | |
10963 | } | |
10964 | ||
10965 | if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT | |
10966 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) | |
10967 | { | |
10968 | reloc = R_NDS32_20_RELA; | |
10969 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
10970 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
10971 | bfd_putb32 (insn, contents + laddr); | |
10972 | } | |
10973 | /* This is avoid to relax symbol address which is fixed | |
10974 | relocations. Ex: _stack. */ | |
10975 | else if (N32_OP6 (insn) == N32_OP6_ORI | |
10976 | && h && bfd_is_abs_section (h->root.u.def.section)) | |
10977 | return; | |
10978 | else | |
10979 | { | |
10980 | range_l = sdata_range[1][0]; | |
10981 | range_h = sdata_range[1][1]; | |
10982 | switch (ELF32_R_TYPE (irel->r_info)) | |
10983 | { | |
10984 | case R_NDS32_LO12S0_RELA: | |
10985 | reloc = R_NDS32_SDA19S0_RELA; | |
10986 | break; | |
10987 | case R_NDS32_LO12S1_RELA: | |
10988 | reloc = R_NDS32_SDA18S1_RELA; | |
10989 | break; | |
10990 | case R_NDS32_LO12S2_RELA: | |
10991 | reloc = R_NDS32_SDA17S2_RELA; | |
10992 | break; | |
10993 | case R_NDS32_LO12S2_DP_RELA: | |
10994 | range_l = sdata_range[0][0]; | |
10995 | range_h = sdata_range[0][1]; | |
10996 | reloc = R_NDS32_SDA12S2_DP_RELA; | |
10997 | break; | |
10998 | case R_NDS32_LO12S2_SP_RELA: | |
10999 | range_l = sdata_range[0][0]; | |
11000 | range_h = sdata_range[0][1]; | |
11001 | reloc = R_NDS32_SDA12S2_SP_RELA; | |
11002 | break; | |
11003 | default: | |
11004 | return; | |
11005 | } | |
11006 | ||
11007 | /* There are range_h and range_l because linker has to promise | |
11008 | all sections move cross one page together. */ | |
11009 | if ((local_sda <= access_addr && (access_addr - local_sda) < range_h) | |
11010 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) | |
11011 | { | |
11012 | if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP) | |
35c08157 | 11013 | { |
1c8f6a4d KLC |
11014 | /* Maybe we should add R_NDS32_INSN16 reloc type here |
11015 | or manually do some optimization. sethi can't be | |
11016 | eliminated when updating $gp so the relative ori | |
11017 | needs to be preserved. */ | |
11018 | return; | |
35c08157 | 11019 | } |
1c8f6a4d KLC |
11020 | if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info), |
11021 | &insn)) | |
11022 | return; | |
11023 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11024 | bfd_putb32 (insn, contents + laddr); | |
11025 | ||
11026 | irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11027 | R_NDS32_INSN16); | |
11028 | /* SDA17 must keep INSN16 for converting fp_as_gp. */ | |
11029 | if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA) | |
11030 | irelfn->r_info = | |
11031 | ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE); | |
11032 | ||
35c08157 | 11033 | } |
1c8f6a4d KLC |
11034 | } |
11035 | return; | |
11036 | } | |
35c08157 | 11037 | |
1c8f6a4d KLC |
11038 | /* Relax low part of PIC instruction pattern. */ |
11039 | ||
11040 | static void | |
11041 | nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd, | |
11042 | asection *sec, Elf_Internal_Rela *irel, | |
11043 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11044 | Elf_Internal_Shdr *symtab_hdr) | |
11045 | { | |
11046 | uint32_t insn; | |
11047 | bfd_vma local_sda, laddr; | |
11048 | bfd_signed_vma foff; | |
11049 | unsigned long reloc; | |
11050 | ||
11051 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11052 | &local_sda, FALSE); | |
11053 | laddr = irel->r_offset; | |
11054 | insn = bfd_getb32 (contents + laddr); | |
11055 | ||
11056 | if (N32_OP6 (insn) != N32_OP6_ORI) | |
11057 | return; | |
11058 | ||
11059 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12) | |
11060 | { | |
11061 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
11062 | symtab_hdr) - local_sda; | |
11063 | reloc = R_NDS32_GOT20; | |
11064 | } | |
11065 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12) | |
11066 | { | |
11067 | foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, | |
11068 | symtab_hdr) - local_sda; | |
11069 | reloc = R_NDS32_PLT_GOTREL_LO20; | |
11070 | } | |
11071 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12) | |
11072 | { | |
11073 | foff = calculate_memory_address (abfd, irel, isymbuf, | |
11074 | symtab_hdr) - local_sda; | |
11075 | reloc = R_NDS32_GOTOFF; | |
11076 | } | |
11077 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12) | |
11078 | { | |
11079 | foff = local_sda - sec->output_section->vma + sec->output_offset | |
11080 | + irel->r_offset + irel->r_addend; | |
11081 | reloc = R_NDS32_GOTPC20; | |
11082 | } | |
11083 | else | |
11084 | return; | |
11085 | ||
11086 | if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT)) | |
11087 | { | |
11088 | /* Turn into MOVI. */ | |
11089 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11090 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
11091 | bfd_putb32 (insn, contents + laddr); | |
11092 | } | |
11093 | } | |
11094 | ||
11095 | /* Relax low part of LE TLS instruction pattern. */ | |
11096 | ||
11097 | static void | |
11098 | nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd, | |
11099 | Elf_Internal_Rela *irel, | |
11100 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11101 | Elf_Internal_Shdr *symtab_hdr) | |
11102 | { | |
11103 | uint32_t insn; | |
11104 | bfd_vma laddr; | |
11105 | bfd_signed_vma foff; | |
11106 | unsigned long reloc; | |
11107 | ||
11108 | laddr = irel->r_offset; | |
11109 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11110 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11111 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11112 | insn = bfd_getb32 (contents + laddr); | |
11113 | ||
11114 | if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT | |
11115 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT) | |
11116 | { | |
11117 | /* Pattern sethi-ori transform to movi. */ | |
11118 | reloc = R_NDS32_TLS_LE_20; | |
11119 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); | |
11120 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); | |
11121 | bfd_putb32 (insn, contents + laddr); | |
11122 | } | |
11123 | } | |
11124 | ||
11125 | /* Relax LE TLS calculate address instruction pattern. */ | |
11126 | ||
11127 | static void | |
11128 | nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd, | |
11129 | asection *sec, Elf_Internal_Rela *irel, | |
11130 | Elf_Internal_Rela *internal_relocs, | |
11131 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11132 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11133 | { | |
11134 | /* Local TLS non-pic | |
11135 | sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20 | |
11136 | ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12 | |
11137 | add ra, ta, tp ; TLS_LE_ADD */ | |
11138 | ||
11139 | uint32_t insn; | |
11140 | bfd_vma laddr; | |
11141 | bfd_signed_vma foff; | |
11142 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11143 | ||
11144 | irelend = internal_relocs + sec->reloc_count; | |
11145 | laddr = irel->r_offset; | |
11146 | insn = bfd_getb32 (contents + laddr); | |
11147 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11148 | R_NDS32_PTR_RESOLVED); | |
11149 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11150 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11151 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11152 | ||
11153 | /* The range is +/-16k. */ | |
11154 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
11155 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
11156 | { | |
11157 | /* Transform add to addi. */ | |
11158 | insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0); | |
11159 | irel->r_info = | |
11160 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
11161 | ||
11162 | bfd_putb32 (insn, contents + laddr); | |
11163 | if (i1_irelfn != irelend) | |
11164 | { | |
11165 | i1_irelfn->r_addend |= 1; | |
11166 | *again = TRUE; | |
11167 | } | |
11168 | } | |
11169 | } | |
11170 | ||
11171 | /* Relax LE TLS load store instruction pattern. */ | |
11172 | ||
11173 | static void | |
11174 | nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd, | |
11175 | asection *sec, Elf_Internal_Rela *irel, | |
11176 | Elf_Internal_Rela *internal_relocs, | |
11177 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11178 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11179 | { | |
11180 | ||
11181 | uint32_t insn; | |
11182 | bfd_vma laddr; | |
11183 | bfd_signed_vma foff; | |
11184 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11185 | int success = 0; | |
11186 | ||
11187 | irelend = internal_relocs + sec->reloc_count; | |
11188 | laddr = irel->r_offset; | |
11189 | insn = bfd_getb32 (contents + laddr); | |
11190 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11191 | R_NDS32_PTR_RESOLVED); | |
11192 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11193 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); | |
11194 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); | |
11195 | ||
11196 | switch ((N32_OP6 (insn) << 8) | (insn & 0xff)) | |
11197 | { | |
11198 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
11199 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
11200 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
11201 | /* The range is +/-16k. */ | |
11202 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT | |
11203 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) | |
11204 | { | |
11205 | insn = | |
11206 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11207 | irel->r_info = | |
11208 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); | |
11209 | success = 1; | |
11210 | break; | |
11211 | } | |
11212 | case (N32_OP6_MEM << 8) | N32_MEM_LH: | |
11213 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
11214 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
11215 | /* The range is +/-32k. */ | |
11216 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1 | |
11217 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1) | |
35c08157 | 11218 | { |
1c8f6a4d KLC |
11219 | insn = |
11220 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11221 | irel->r_info = | |
11222 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1); | |
11223 | success = 1; | |
11224 | break; | |
11225 | } | |
11226 | case (N32_OP6_MEM << 8) | N32_MEM_LW: | |
11227 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
11228 | /* The range is +/-64k. */ | |
11229 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2 | |
11230 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2) | |
11231 | { | |
11232 | insn = | |
11233 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); | |
11234 | irel->r_info = | |
11235 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2); | |
11236 | success = 1; | |
11237 | break; | |
11238 | } | |
11239 | default: | |
11240 | break; | |
11241 | } | |
35c08157 | 11242 | |
1c8f6a4d KLC |
11243 | if (success) |
11244 | { | |
11245 | bfd_putb32 (insn, contents + laddr); | |
11246 | if (i1_irelfn != irelend) | |
11247 | { | |
11248 | i1_irelfn->r_addend |= 1; | |
11249 | *again = TRUE; | |
11250 | } | |
11251 | } | |
11252 | } | |
35c08157 | 11253 | |
1c8f6a4d | 11254 | /* Relax PTR relocation for nds32_elf_relax_section. */ |
35c08157 | 11255 | |
1c8f6a4d KLC |
11256 | static bfd_boolean |
11257 | nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, | |
11258 | Elf_Internal_Rela *internal_relocs, int *insn_len, | |
11259 | int *seq_len, bfd_byte *contents) | |
11260 | { | |
11261 | Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel; | |
35c08157 | 11262 | |
1c8f6a4d | 11263 | irelend = internal_relocs + sec->reloc_count; |
35c08157 | 11264 | |
1c8f6a4d KLC |
11265 | re_irel = |
11266 | find_relocs_at_address_addr (irel, internal_relocs, irelend, | |
11267 | R_NDS32_PTR_RESOLVED, irel->r_addend); | |
35c08157 | 11268 | |
1c8f6a4d KLC |
11269 | if (re_irel == irelend) |
11270 | { | |
11271 | (*_bfd_error_handler) | |
11272 | ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.", | |
11273 | abfd, (long) irel->r_offset); | |
11274 | return FALSE; | |
11275 | } | |
35c08157 | 11276 | |
1c8f6a4d KLC |
11277 | if (re_irel->r_addend != 1) |
11278 | return FALSE; | |
35c08157 | 11279 | |
1c8f6a4d KLC |
11280 | /* Pointed target is relaxed and no longer needs this void *, |
11281 | change the type to NONE. */ | |
11282 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
35c08157 | 11283 | |
1c8f6a4d KLC |
11284 | /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does |
11285 | not exist, it means only count 1 and remove it directly. */ | |
11286 | /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */ | |
11287 | count_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11288 | R_NDS32_PTR_COUNT); | |
11289 | ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend, | |
11290 | R_NDS32_PTR); | |
11291 | if (count_irel != irelend) | |
11292 | { | |
11293 | if (--count_irel->r_addend > 0) | |
11294 | return FALSE; | |
11295 | } | |
11296 | ||
11297 | if (ptr_irel != irelend) | |
11298 | return FALSE; | |
11299 | ||
11300 | /* If the PTR_COUNT is already 0, remove current instruction. */ | |
11301 | *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset); | |
11302 | *insn_len = 0; | |
11303 | return TRUE; | |
11304 | } | |
11305 | ||
11306 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11307 | ||
11308 | static void | |
11309 | nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11310 | asection *sec, Elf_Internal_Rela *irel, | |
11311 | Elf_Internal_Rela *internal_relocs, | |
11312 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11313 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11314 | { | |
11315 | uint32_t insn; | |
11316 | bfd_signed_vma foff; | |
11317 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11318 | bfd_vma local_sda, laddr; | |
11319 | ||
11320 | irelend = internal_relocs + sec->reloc_count; | |
11321 | laddr = irel->r_offset; | |
11322 | insn = bfd_getb32 (contents + laddr); | |
11323 | ||
11324 | /* FIXME: It's a little trouble to turn JRAL5 to JAL since | |
11325 | we need additional space. It might be help if we could | |
11326 | borrow some space from instructions to be eliminated | |
11327 | such as sethi, ori, add. */ | |
11328 | if (insn & 0x80000000) | |
11329 | return; | |
11330 | ||
11331 | if (nds32_elf_check_dup_relocs | |
11332 | (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF)) | |
11333 | return; | |
11334 | ||
11335 | i1_irelfn = | |
11336 | find_relocs_at_address (irel, internal_relocs, irelend, | |
11337 | R_NDS32_PTR_RESOLVED); | |
11338 | ||
11339 | /* FIXIT 090606 | |
11340 | The boundary should be reduced since the .plt section hasn't | |
11341 | been created and the address of specific entry is still unknown | |
11342 | Maybe the range between the function call and the begin of the | |
11343 | .text section can be used to decide if the .plt is in the range | |
11344 | of function call. */ | |
11345 | ||
11346 | if (N32_OP6 (insn) == N32_OP6_ALU1 | |
11347 | && N32_SUB5 (insn) == N32_ALU1_ADD) | |
11348 | { | |
11349 | /* Get the value of the symbol referred to by the reloc. */ | |
11350 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11351 | &local_sda, FALSE); | |
11352 | foff = (bfd_signed_vma) (calculate_plt_memory_address | |
11353 | (abfd, link_info, isymbuf, irel, | |
11354 | symtab_hdr) - local_sda); | |
11355 | /* This condition only happened when symbol is undefined. */ | |
11356 | if (foff == 0) | |
11357 | return; | |
11358 | ||
11359 | if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT) | |
11360 | return; | |
11361 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11362 | R_NDS32_PLT_GOTREL_LO19); | |
11363 | /* addi.gp */ | |
11364 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
11365 | } | |
11366 | else if (N32_OP6 (insn) == N32_OP6_JREG | |
11367 | && N32_SUB5 (insn) == N32_JREG_JRAL) | |
11368 | { | |
11369 | /* Get the value of the symbol referred to by the reloc. */ | |
11370 | foff = | |
11371 | calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr); | |
11372 | /* This condition only happened when symbol is undefined. */ | |
11373 | if (foff == 0) | |
11374 | return; | |
11375 | if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1) | |
11376 | return; | |
11377 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL); | |
11378 | insn = INSN_JAL; | |
11379 | } | |
11380 | else | |
11381 | return; | |
11382 | ||
11383 | bfd_putb32 (insn, contents + laddr); | |
11384 | if (i1_irelfn != irelend) | |
11385 | { | |
11386 | i1_irelfn->r_addend |= 1; | |
11387 | *again = TRUE; | |
11388 | } | |
11389 | } | |
11390 | ||
11391 | /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11392 | ||
11393 | static void | |
11394 | nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11395 | asection *sec, Elf_Internal_Rela *irel, | |
11396 | Elf_Internal_Rela *internal_relocs, | |
11397 | bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr, | |
11398 | bfd_boolean *again) | |
11399 | { | |
11400 | uint32_t insn; | |
11401 | bfd_signed_vma foff; | |
11402 | Elf_Internal_Rela *i1_irelfn, *irelend; | |
11403 | bfd_vma local_sda, laddr; | |
11404 | ||
11405 | irelend = internal_relocs + sec->reloc_count; | |
11406 | laddr = irel->r_offset; | |
11407 | insn = bfd_getb32 (contents + laddr); | |
11408 | if (insn & 0x80000000) | |
11409 | return; | |
11410 | ||
11411 | if (nds32_elf_check_dup_relocs | |
11412 | (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF)) | |
11413 | return; | |
11414 | ||
11415 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11416 | R_NDS32_PTR_RESOLVED); | |
11417 | ||
11418 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11419 | &local_sda, FALSE); | |
11420 | foff = calculate_got_memory_address (abfd, link_info, irel, | |
11421 | symtab_hdr) - local_sda; | |
11422 | ||
11423 | if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT) | |
11424 | { | |
11425 | /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */ | |
11426 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11427 | irel->r_info = | |
11428 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA); | |
11429 | bfd_putb32 (insn, contents + laddr); | |
11430 | if (i1_irelfn != irelend) | |
11431 | { | |
11432 | i1_irelfn->r_addend |= 1; | |
11433 | *again = TRUE; | |
11434 | } | |
11435 | } | |
11436 | } | |
11437 | ||
11438 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ | |
11439 | ||
11440 | static void | |
11441 | nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd, | |
11442 | asection *sec, Elf_Internal_Rela *irel, | |
11443 | Elf_Internal_Rela *internal_relocs, | |
11444 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, | |
11445 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) | |
11446 | { | |
11447 | int opc_insn_gotoff; | |
11448 | uint32_t insn; | |
11449 | bfd_signed_vma foff; | |
11450 | Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend; | |
11451 | bfd_vma local_sda, laddr; | |
11452 | ||
11453 | irelend = internal_relocs + sec->reloc_count; | |
11454 | laddr = irel->r_offset; | |
11455 | insn = bfd_getb32 (contents + laddr); | |
11456 | ||
11457 | if (insn & 0x80000000) | |
11458 | return; | |
11459 | ||
11460 | if (nds32_elf_check_dup_relocs | |
11461 | (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF)) | |
11462 | return; | |
11463 | ||
11464 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11465 | R_NDS32_PTR_RESOLVED); | |
11466 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
11467 | &local_sda, FALSE); | |
11468 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
11469 | foff = foff - local_sda; | |
11470 | ||
11471 | if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT) | |
11472 | return; | |
11473 | ||
11474 | /* Concatenate opcode and sub-opcode for switch case. | |
11475 | It may be MEM or ALU1. */ | |
11476 | opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff); | |
11477 | switch (opc_insn_gotoff) | |
11478 | { | |
11479 | case (N32_OP6_MEM << 8) | N32_MEM_LW: | |
11480 | /* 4-byte aligned. */ | |
11481 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); | |
11482 | irel->r_info = | |
11483 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11484 | break; | |
11485 | case (N32_OP6_MEM << 8) | N32_MEM_SW: | |
11486 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); | |
11487 | irel->r_info = | |
11488 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); | |
11489 | break; | |
11490 | case (N32_OP6_MEM << 8) | N32_MEM_LH: | |
11491 | /* 2-byte aligned. */ | |
11492 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); | |
11493 | irel->r_info = | |
11494 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11495 | break; | |
11496 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: | |
11497 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); | |
11498 | irel->r_info = | |
11499 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11500 | break; | |
11501 | case (N32_OP6_MEM << 8) | N32_MEM_SH: | |
11502 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); | |
11503 | irel->r_info = | |
11504 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); | |
11505 | break; | |
11506 | case (N32_OP6_MEM << 8) | N32_MEM_LB: | |
11507 | /* 1-byte aligned. */ | |
11508 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); | |
11509 | irel->r_info = | |
11510 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11511 | break; | |
11512 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: | |
11513 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); | |
11514 | irel->r_info = | |
11515 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11516 | break; | |
11517 | case (N32_OP6_MEM << 8) | N32_MEM_SB: | |
11518 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); | |
11519 | irel->r_info = | |
11520 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11521 | break; | |
11522 | case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD: | |
11523 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); | |
11524 | irel->r_info = | |
11525 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); | |
11526 | break; | |
11527 | default: | |
11528 | return; | |
11529 | } | |
11530 | ||
11531 | bfd_putb32 (insn, contents + laddr); | |
11532 | if (i1_irelfn != irelend) | |
11533 | { | |
11534 | i1_irelfn->r_addend |= 1; | |
11535 | *again = TRUE; | |
11536 | } | |
11537 | if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, | |
11538 | R_NDS32_INSN16)) != irelend) | |
11539 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11540 | ||
11541 | } | |
11542 | ||
11543 | static bfd_boolean | |
11544 | nds32_relax_adjust_label (bfd *abfd, asection *sec, | |
11545 | Elf_Internal_Rela *internal_relocs, | |
11546 | bfd_byte *contents, | |
11547 | nds32_elf_blank_t **relax_blank_list, | |
11548 | int optimize, int opt_size) | |
11549 | { | |
11550 | /* This code block is used to adjust 4-byte alignment by relax a pair | |
11551 | of instruction a time. | |
11552 | ||
11553 | It recognizes three types of relocations. | |
11554 | 1. R_NDS32_LABEL - a aligment. | |
11555 | 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit. | |
11556 | 3. is_16bit_NOP () - remove a 16-bit instruction. */ | |
11557 | ||
11558 | /* TODO: It seems currently implementation only support 4-byte aligment. | |
11559 | We should handle any-aligment. */ | |
11560 | ||
11561 | Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel; | |
11562 | Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL; | |
11563 | Elf_Internal_Rela rel_temp; | |
11564 | Elf_Internal_Rela *irelend; | |
11565 | bfd_vma address; | |
11566 | uint16_t insn16; | |
11567 | ||
11568 | /* Checking for branch relaxation relies on the relocations to | |
11569 | be sorted on 'r_offset'. This is not guaranteed so we must sort. */ | |
11570 | nds32_insertion_sort (internal_relocs, sec->reloc_count, | |
11571 | sizeof (Elf_Internal_Rela), compar_reloc); | |
11572 | ||
11573 | irelend = internal_relocs + sec->reloc_count; | |
11574 | ||
11575 | /* Force R_NDS32_LABEL before R_NDS32_INSN16. */ | |
11576 | /* FIXME: Can we generate the right order in assembler? | |
11577 | So we don't have to swapping them here. */ | |
11578 | ||
11579 | for (label_rel = internal_relocs, insn_rel = internal_relocs; | |
11580 | label_rel < irelend; label_rel++) | |
11581 | { | |
11582 | if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL) | |
11583 | continue; | |
11584 | ||
11585 | /* Find the first reloc has the same offset with label_rel. */ | |
11586 | while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset) | |
11587 | insn_rel++; | |
11588 | ||
11589 | for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset; | |
11590 | insn_rel++) | |
11591 | /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same | |
11592 | address. */ | |
11593 | if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16) | |
11594 | break; | |
11595 | ||
11596 | if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset | |
11597 | && insn_rel < label_rel) | |
11598 | { | |
11599 | /* Swap the two reloc if the R_NDS32_INSN16 is | |
11600 | before R_NDS32_LABEL. */ | |
11601 | memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela)); | |
11602 | memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela)); | |
11603 | memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela)); | |
11604 | } | |
11605 | } | |
11606 | ||
11607 | label_rel = NULL; | |
11608 | insn_rel = NULL; | |
11609 | /* If there were a sequence of R_NDS32_LABEL end up with .align 2 | |
11610 | or higher, remove other R_NDS32_LABEL with lower alignment. | |
11611 | If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted, | |
11612 | then the R_NDS32_LABEL sequence is broke. */ | |
11613 | for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++) | |
11614 | { | |
11615 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL) | |
11616 | { | |
11617 | if (label_rel == NULL) | |
11618 | { | |
11619 | if (tmp_rel->r_addend < 2) | |
11620 | label_rel = tmp_rel; | |
11621 | continue; | |
11622 | } | |
11623 | else if (tmp_rel->r_addend > 1) | |
11624 | { | |
11625 | /* Remove all LABEL relocation from label_rel to tmp_rel | |
11626 | including relocations with same offset as tmp_rel. */ | |
11627 | for (tmp2_rel = label_rel; tmp2_rel < tmp_rel | |
11628 | || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++) | |
11629 | { | |
11630 | if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL | |
11631 | && tmp2_rel->r_addend < 2) | |
11632 | tmp2_rel->r_info = | |
11633 | ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info), | |
11634 | R_NDS32_NONE); | |
11635 | } | |
11636 | label_rel = NULL; | |
11637 | } | |
11638 | } | |
11639 | else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel) | |
11640 | { | |
11641 | /* A new INSN16 which can be converted, so clear label_rel. */ | |
11642 | if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs, | |
11643 | irelend, &insn16) | |
11644 | || is_16bit_NOP (abfd, sec, tmp_rel)) | |
11645 | label_rel = NULL; | |
11646 | } | |
11647 | } | |
11648 | ||
11649 | label_rel = NULL; | |
11650 | insn_rel = NULL; | |
11651 | /* Optimized for speed and nothing has not been relaxed. | |
11652 | It's time to align labels. | |
11653 | We may convert a 16-bit instruction right before a label to | |
11654 | 32-bit, in order to align the label if necessary | |
11655 | all reloc entries has been sorted by r_offset. */ | |
11656 | for (irel = internal_relocs; irel < irelend; irel++) | |
11657 | { | |
11658 | if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16 | |
11659 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL) | |
11660 | continue; | |
11661 | ||
11662 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16) | |
11663 | { | |
11664 | /* A new INSN16 found, resize the old one. */ | |
11665 | if (is_convert_32_to_16 | |
11666 | (abfd, sec, irel, internal_relocs, irelend, &insn16) | |
11667 | || is_16bit_NOP (abfd, sec, irel)) | |
11668 | { | |
11669 | if (insn_rel) | |
11670 | { | |
11671 | /* Previous INSN16 reloc exists, reduce its | |
11672 | size to 16-bit. */ | |
11673 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11674 | irelend, &insn16)) | |
35c08157 | 11675 | { |
1c8f6a4d KLC |
11676 | nds32_elf_write_16 (abfd, contents, insn_rel, |
11677 | internal_relocs, irelend, insn16); | |
11678 | ||
11679 | if (!insert_nds32_elf_blank_recalc_total | |
11680 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11681 | return FALSE; | |
11682 | } | |
11683 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11684 | { | |
11685 | if (!insert_nds32_elf_blank_recalc_total | |
11686 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11687 | return FALSE; | |
11688 | } | |
11689 | insn_rel->r_info = | |
11690 | ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE); | |
11691 | } | |
11692 | /* Save the new one for later use. */ | |
11693 | insn_rel = irel; | |
11694 | } | |
11695 | else | |
11696 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), | |
11697 | R_NDS32_NONE); | |
11698 | } | |
11699 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL) | |
11700 | { | |
11701 | /* Search for label. */ | |
11702 | int force_relax = 0; | |
11703 | ||
11704 | /* Label on 16-bit instruction or optimization | |
11705 | needless, just reset this reloc. */ | |
11706 | insn16 = bfd_getb16 (contents + irel->r_offset); | |
11707 | if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000))) | |
11708 | { | |
11709 | irel->r_info = | |
11710 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); | |
11711 | continue; | |
11712 | } | |
11713 | ||
11714 | address = | |
11715 | irel->r_offset - get_nds32_elf_blank_total (relax_blank_list, | |
11716 | irel->r_offset, 1); | |
11717 | ||
11718 | if (!insn_rel) | |
11719 | { | |
11720 | /* Check if there is case which can not be aligned. */ | |
11721 | if (irel->r_addend == 2 && address & 0x2) | |
11722 | return FALSE; | |
11723 | continue; | |
11724 | } | |
11725 | ||
11726 | /* Try to align this label. */ | |
11727 | ||
11728 | if ((irel->r_addend & 0x1f) < 2) | |
11729 | { | |
11730 | /* Check if there is a INSN16 at the same address. | |
11731 | Label_rel always seats before insn_rel after | |
11732 | our sort. */ | |
11733 | ||
11734 | /* Search for INSN16 at LABEL location. If INSN16 is at | |
11735 | same location and this LABEL alignment is lower than 2, | |
11736 | the INSN16 can be converted to 2-byte. */ | |
11737 | for (tmp_rel = irel; | |
11738 | tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset; | |
11739 | tmp_rel++) | |
11740 | { | |
11741 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 | |
11742 | && (is_convert_32_to_16 | |
11743 | (abfd, sec, tmp_rel, internal_relocs, | |
11744 | irelend, &insn16) | |
11745 | || is_16bit_NOP (abfd, sec, tmp_rel))) | |
11746 | { | |
11747 | force_relax = 1; | |
11748 | break; | |
11749 | } | |
11750 | } | |
11751 | } | |
11752 | ||
11753 | if (force_relax || irel->r_addend == 1 || address & 0x2) | |
11754 | { | |
11755 | /* Label not aligned. */ | |
11756 | /* Previous reloc exists, reduce its size to 16-bit. */ | |
11757 | if (is_convert_32_to_16 (abfd, sec, insn_rel, | |
11758 | internal_relocs, irelend, &insn16)) | |
11759 | { | |
11760 | nds32_elf_write_16 (abfd, contents, insn_rel, | |
11761 | internal_relocs, irelend, insn16); | |
11762 | ||
11763 | if (!insert_nds32_elf_blank_recalc_total | |
11764 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11765 | return FALSE; | |
11766 | } | |
11767 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11768 | { | |
11769 | if (!insert_nds32_elf_blank_recalc_total | |
11770 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11771 | return FALSE; | |
11772 | } | |
11773 | ||
11774 | } | |
11775 | /* INSN16 reloc is used. */ | |
11776 | insn_rel = NULL; | |
11777 | } | |
11778 | } | |
11779 | ||
11780 | address = | |
11781 | sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0); | |
11782 | if (insn_rel && (address & 0x2 || opt_size)) | |
11783 | { | |
11784 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, | |
11785 | irelend, &insn16)) | |
11786 | { | |
11787 | nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs, | |
11788 | irelend, insn16); | |
11789 | if (!insert_nds32_elf_blank_recalc_total | |
11790 | (relax_blank_list, insn_rel->r_offset + 2, 2)) | |
11791 | return FALSE; | |
11792 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11793 | R_NDS32_NONE); | |
11794 | } | |
11795 | else if (is_16bit_NOP (abfd, sec, insn_rel)) | |
11796 | { | |
11797 | if (!insert_nds32_elf_blank_recalc_total | |
11798 | (relax_blank_list, insn_rel->r_offset, 2)) | |
11799 | return FALSE; | |
11800 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), | |
11801 | R_NDS32_NONE); | |
11802 | } | |
11803 | } | |
11804 | insn_rel = NULL; | |
11805 | return TRUE; | |
11806 | } | |
11807 | ||
11808 | /* Pick relaxation round. */ | |
11809 | ||
11810 | static int | |
11811 | nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again, | |
11812 | struct elf_nds32_link_hash_table *table, | |
11813 | struct bfd_link_info *link_info) | |
11814 | { | |
11815 | static asection *final_sec; | |
11816 | static bfd_boolean set = FALSE; | |
11817 | static bfd_boolean first = TRUE; | |
11818 | int round_table[] = { | |
11819 | NDS32_RELAX_NORMAL_ROUND, | |
11820 | NDS32_RELAX_JUMP_IFC_ROUND, | |
11821 | NDS32_RELAX_EX9_BUILD_ROUND, | |
11822 | NDS32_RELAX_EX9_REPLACE_ROUND, | |
11823 | }; | |
11824 | static int pass = 0; | |
11825 | static int relax_round; | |
11826 | ||
11827 | if (first) | |
11828 | { | |
11829 | /* Run an empty run to get the final section. */ | |
11830 | relax_round = NDS32_RELAX_EMPTY_ROUND; | |
11831 | ||
11832 | /* It has to enter relax again because we can | |
11833 | not make sure what the final turn is. */ | |
11834 | *again = TRUE; | |
11835 | first = FALSE; | |
11836 | } | |
11837 | ||
11838 | if (!set && *again) | |
11839 | { | |
11840 | /* It is reentered when again is FALSE. */ | |
11841 | final_sec = sec; | |
11842 | return relax_round; | |
11843 | } | |
11844 | ||
11845 | /* The second round begins. */ | |
11846 | set = TRUE; | |
11847 | ||
11848 | relax_round = round_table[pass]; | |
11849 | ||
11850 | if (!init && final_sec == sec) | |
11851 | { | |
11852 | switch (relax_round) | |
11853 | { | |
11854 | case NDS32_RELAX_NORMAL_ROUND: | |
11855 | if (!*again) | |
11856 | { | |
11857 | /* Normal relaxation done. */ | |
11858 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) | |
11859 | { | |
11860 | pass++; | |
11861 | *again = TRUE; | |
11862 | } | |
11863 | else if (table->target_optimize & NDS32_RELAX_EX9_ON) | |
11864 | { | |
11865 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ | |
11866 | *again = TRUE; | |
11867 | } | |
11868 | else if (table->ex9_import_file) | |
11869 | { | |
11870 | /* Import ex9 table. */ | |
11871 | if (table->update_ex9_table) | |
11872 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ | |
11873 | else | |
11874 | pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */ | |
11875 | nds32_elf_ex9_import_table (link_info); | |
11876 | *again = TRUE; | |
11877 | } | |
11878 | } | |
11879 | break; | |
11880 | case NDS32_RELAX_JUMP_IFC_ROUND: | |
11881 | if (!nds32_elf_ifc_finish (link_info)) | |
11882 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); | |
11883 | if (table->target_optimize & NDS32_RELAX_EX9_ON) | |
11884 | { | |
11885 | pass++; | |
11886 | *again = TRUE; | |
11887 | } | |
11888 | break; | |
11889 | case NDS32_RELAX_EX9_BUILD_ROUND: | |
11890 | nds32_elf_ex9_finish (link_info); | |
11891 | pass++; | |
11892 | *again = TRUE; | |
11893 | break; | |
11894 | case NDS32_RELAX_EX9_REPLACE_ROUND: | |
11895 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) | |
11896 | { | |
11897 | /* Do jump IFC optimization again. */ | |
11898 | if (!nds32_elf_ifc_finish (link_info)) | |
11899 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); | |
11900 | } | |
11901 | break; | |
11902 | default: | |
11903 | break; | |
11904 | } | |
11905 | } | |
11906 | ||
11907 | return relax_round; | |
11908 | } | |
11909 | ||
11910 | static bfd_boolean | |
11911 | nds32_elf_relax_section (bfd *abfd, asection *sec, | |
11912 | struct bfd_link_info *link_info, bfd_boolean *again) | |
11913 | { | |
11914 | nds32_elf_blank_t *relax_blank_list = NULL; | |
11915 | Elf_Internal_Shdr *symtab_hdr; | |
11916 | Elf_Internal_Rela *internal_relocs; | |
11917 | Elf_Internal_Rela *irel; | |
11918 | Elf_Internal_Rela *irelend; | |
11919 | Elf_Internal_Sym *isymbuf = NULL; | |
11920 | bfd_byte *contents = NULL; | |
11921 | bfd_boolean result = TRUE; | |
11922 | int optimize = 0; | |
11923 | int opt_size = 0; | |
11924 | uint32_t insn; | |
11925 | uint16_t insn16; | |
11926 | ||
11927 | /* Target dependnet option. */ | |
11928 | struct elf_nds32_link_hash_table *table; | |
11929 | int load_store_relax; | |
11930 | int relax_round; | |
11931 | ||
11932 | relax_blank_list = NULL; | |
11933 | ||
11934 | *again = FALSE; | |
11935 | ||
11936 | /* Nothing to do for | |
11937 | * relocatable link or | |
11938 | * non-relocatable section or | |
11939 | * non-code section or | |
11940 | * empty content or | |
11941 | * no reloc entry. */ | |
11942 | if (link_info->relocatable | |
11943 | || (sec->flags & SEC_RELOC) == 0 | |
11944 | || (sec->flags & SEC_EXCLUDE) == 1 | |
11945 | || (sec->flags & SEC_CODE) == 0 | |
11946 | || sec->size == 0) | |
11947 | return TRUE; | |
11948 | ||
11949 | /* 09.12.11 Workaround. */ | |
11950 | /* We have to adjust align for R_NDS32_LABEL if needed. | |
11951 | The adjust approach only can fix 2-byte align once. */ | |
11952 | if (sec->alignment_power > 2) | |
11953 | return TRUE; | |
11954 | ||
11955 | /* The optimization type to do. */ | |
11956 | ||
11957 | table = nds32_elf_hash_table (link_info); | |
11958 | relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info); | |
11959 | switch (relax_round) | |
11960 | { | |
11961 | case NDS32_RELAX_JUMP_IFC_ROUND: | |
11962 | /* Here is the entrance of ifc jump relaxation. */ | |
11963 | if (!nds32_elf_ifc_calc (link_info, abfd, sec)) | |
11964 | return FALSE; | |
11965 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
11966 | return TRUE; | |
11967 | ||
11968 | case NDS32_RELAX_EX9_BUILD_ROUND: | |
11969 | /* Here is the entrance of ex9 relaxation. There are two pass of | |
11970 | ex9 relaxation. The one is to traverse all instructions and build | |
11971 | the hash table. The other one is to compare instructions and replace | |
11972 | it by ex9.it. */ | |
11973 | if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info)) | |
11974 | return FALSE; | |
11975 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
11976 | return TRUE; | |
11977 | ||
11978 | case NDS32_RELAX_EX9_REPLACE_ROUND: | |
11979 | if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec)) | |
11980 | return FALSE; | |
11981 | return TRUE; | |
11982 | ||
11983 | case NDS32_RELAX_EMPTY_ROUND: | |
11984 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
11985 | return TRUE; | |
11986 | ||
11987 | case NDS32_RELAX_NORMAL_ROUND: | |
11988 | default: | |
11989 | if (sec->reloc_count == 0) | |
11990 | return TRUE; | |
11991 | break; | |
11992 | } | |
11993 | ||
11994 | /* The begining of general relaxation. */ | |
11995 | ||
11996 | if (is_SDA_BASE_set == 0) | |
11997 | { | |
11998 | bfd_vma gp; | |
11999 | is_SDA_BASE_set = 1; | |
12000 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, | |
12001 | &gp, FALSE); | |
12002 | relax_range_measurement (abfd); | |
12003 | } | |
12004 | ||
12005 | if (is_ITB_BASE_set == 0) | |
12006 | { | |
12007 | /* Set the _ITB_BASE_. */ | |
12008 | if (!nds32_elf_ex9_itb_base (link_info)) | |
12009 | { | |
12010 | (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), abfd); | |
12011 | bfd_set_error (bfd_error_bad_value); | |
12012 | } | |
12013 | } | |
12014 | ||
12015 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12016 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ | |
12017 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
12018 | TRUE /* keep_memory */); | |
12019 | if (internal_relocs == NULL) | |
12020 | goto error_return; | |
12021 | ||
12022 | irelend = internal_relocs + sec->reloc_count; | |
12023 | irel = find_relocs_at_address (internal_relocs, internal_relocs, | |
12024 | irelend, R_NDS32_RELAX_ENTRY); | |
12025 | ||
12026 | if (irel == irelend) | |
12027 | return TRUE; | |
12028 | ||
12029 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) | |
12030 | { | |
12031 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG) | |
12032 | return TRUE; | |
12033 | ||
12034 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG) | |
12035 | optimize = 1; | |
12036 | ||
12037 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG) | |
12038 | opt_size = 1; | |
12039 | } | |
12040 | ||
12041 | load_store_relax = table->load_store_relax; | |
12042 | ||
12043 | /* Get symbol table and section content. */ | |
12044 | if (!nds32_get_section_contents (abfd, sec, &contents) | |
12045 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) | |
12046 | goto error_return; | |
12047 | ||
12048 | /* Do relax loop only when finalize is not done. | |
12049 | Take care of relaxable relocs except INSN16. */ | |
12050 | for (irel = internal_relocs; irel < irelend; irel++) | |
12051 | { | |
12052 | int seq_len; /* Original length of instruction sequence. */ | |
12053 | int insn_len = 0; /* Final length of instruction sequence. */ | |
12054 | bfd_boolean removed; | |
12055 | ||
12056 | insn = 0; | |
12057 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
12058 | && (irel->r_addend & 0x1f) >= 2) | |
12059 | optimize = 1; | |
12060 | ||
12061 | /* Relocation Types | |
12062 | R_NDS32_LONGCALL1 53 | |
12063 | R_NDS32_LONGCALL2 54 | |
12064 | R_NDS32_LONGCALL3 55 | |
12065 | R_NDS32_LONGJUMP1 56 | |
12066 | R_NDS32_LONGJUMP2 57 | |
12067 | R_NDS32_LONGJUMP3 58 | |
12068 | R_NDS32_LOADSTORE 59 */ | |
12069 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1 | |
12070 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE) | |
12071 | seq_len = GET_SEQ_LEN (irel->r_addend); | |
12072 | ||
12073 | /* Relocation Types | |
12074 | R_NDS32_LONGCALL4 107 | |
12075 | R_NDS32_LONGCALL5 108 | |
12076 | R_NDS32_LONGCALL6 109 | |
12077 | R_NDS32_LONGJUMP4 110 | |
12078 | R_NDS32_LONGJUMP5 111 | |
12079 | R_NDS32_LONGJUMP6 112 | |
12080 | R_NDS32_LONGJUMP7 113 */ | |
12081 | else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4 | |
12082 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7) | |
12083 | seq_len = 4; | |
12084 | ||
12085 | /* Relocation Types | |
12086 | R_NDS32_LO12S0_RELA 30 | |
12087 | R_NDS32_LO12S1_RELA 29 | |
12088 | R_NDS32_LO12S2_RELA 28 | |
12089 | R_NDS32_LO12S2_SP_RELA 71 | |
12090 | R_NDS32_LO12S2_DP_RELA 70 | |
12091 | R_NDS32_GOT_LO12 46 | |
12092 | R_NDS32_GOTOFF_LO12 50 | |
12093 | R_NDS32_PLTREL_LO12 65 | |
12094 | R_NDS32_PLT_GOTREL_LO12 67 | |
12095 | R_NDS32_17IFC_PCREL_RELA 96 | |
12096 | R_NDS32_GOT_SUFF 193 | |
12097 | R_NDS32_GOTOFF_SUFF 194 | |
12098 | R_NDS32_PLT_GOT_SUFF 195 | |
12099 | R_NDS32_MULCALL_SUFF 196 | |
12100 | R_NDS32_PTR 197 */ | |
12101 | else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA | |
12102 | && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA) | |
12103 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA | |
12104 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA | |
12105 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12 | |
12106 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12 | |
12107 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12 | |
12108 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12 | |
12109 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12 | |
12110 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF | |
12111 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR) | |
12112 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA | |
12113 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12 | |
12114 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD | |
12115 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS) | |
12116 | seq_len = 0; | |
12117 | else | |
12118 | continue; | |
12119 | ||
12120 | insn_len = seq_len; | |
12121 | removed = FALSE; | |
12122 | ||
12123 | switch (ELF32_R_TYPE (irel->r_info)) | |
12124 | { | |
12125 | case R_NDS32_LONGCALL1: | |
12126 | removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs, | |
12127 | &insn_len, contents, isymbuf, | |
12128 | symtab_hdr); | |
12129 | break; | |
12130 | case R_NDS32_LONGCALL2: | |
12131 | removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs, | |
12132 | &insn_len, contents, isymbuf, | |
12133 | symtab_hdr); | |
12134 | break; | |
12135 | case R_NDS32_LONGCALL3: | |
12136 | removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs, | |
12137 | &insn_len, contents, isymbuf, | |
12138 | symtab_hdr); | |
12139 | break; | |
12140 | case R_NDS32_LONGJUMP1: | |
12141 | removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs, | |
12142 | &insn_len, contents, isymbuf, | |
12143 | symtab_hdr); | |
12144 | break; | |
12145 | case R_NDS32_LONGJUMP2: | |
12146 | removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs, | |
12147 | &insn_len, contents, isymbuf, | |
12148 | symtab_hdr); | |
12149 | break; | |
12150 | case R_NDS32_LONGJUMP3: | |
12151 | removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs, | |
12152 | &insn_len, contents, isymbuf, | |
12153 | symtab_hdr); | |
12154 | break; | |
12155 | case R_NDS32_LONGCALL4: | |
12156 | removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs, | |
12157 | &insn_len, contents, isymbuf, | |
12158 | symtab_hdr); | |
12159 | break; | |
12160 | case R_NDS32_LONGCALL5: | |
12161 | removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs, | |
12162 | &insn_len, contents, isymbuf, | |
12163 | symtab_hdr); | |
12164 | break; | |
12165 | case R_NDS32_LONGCALL6: | |
12166 | removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs, | |
12167 | &insn_len, contents, isymbuf, | |
12168 | symtab_hdr); | |
12169 | break; | |
12170 | case R_NDS32_LONGJUMP4: | |
12171 | removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs, | |
12172 | &insn_len, contents, isymbuf, | |
12173 | symtab_hdr); | |
12174 | break; | |
12175 | case R_NDS32_LONGJUMP5: | |
12176 | removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs, | |
12177 | &insn_len, &seq_len, contents, | |
12178 | isymbuf, symtab_hdr); | |
12179 | break; | |
12180 | case R_NDS32_LONGJUMP6: | |
12181 | removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs, | |
12182 | &insn_len, &seq_len, contents, | |
12183 | isymbuf, symtab_hdr); | |
12184 | break; | |
12185 | case R_NDS32_LONGJUMP7: | |
12186 | removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs, | |
12187 | &insn_len, &seq_len, contents, | |
12188 | isymbuf, symtab_hdr); | |
12189 | break; | |
12190 | case R_NDS32_LOADSTORE: | |
12191 | removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel, | |
12192 | internal_relocs, &insn_len, | |
12193 | contents, isymbuf, symtab_hdr, | |
12194 | load_store_relax); | |
12195 | break; | |
12196 | case R_NDS32_LO12S0_RELA: | |
12197 | case R_NDS32_LO12S1_RELA: | |
12198 | case R_NDS32_LO12S2_DP_RELA: | |
12199 | case R_NDS32_LO12S2_SP_RELA: | |
12200 | case R_NDS32_LO12S2_RELA: | |
12201 | /* Relax for low part. */ | |
12202 | nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs, | |
12203 | contents, isymbuf, symtab_hdr); | |
12204 | ||
12205 | /* It is impossible to delete blank, so just continue. */ | |
12206 | continue; | |
12207 | case R_NDS32_GOT_LO12: | |
12208 | case R_NDS32_GOTOFF_LO12: | |
12209 | case R_NDS32_PLTREL_LO12: | |
12210 | case R_NDS32_PLT_GOTREL_LO12: | |
12211 | case R_NDS32_GOTPC_LO12: | |
12212 | /* Relax for PIC gp-relative low part. */ | |
12213 | nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents, | |
12214 | isymbuf, symtab_hdr); | |
35c08157 | 12215 | |
1c8f6a4d KLC |
12216 | /* It is impossible to delete blank, so just continue. */ |
12217 | continue; | |
12218 | case R_NDS32_TLS_LE_LO12: | |
12219 | /* Relax for LE TLS low part. */ | |
12220 | nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents, | |
12221 | isymbuf, symtab_hdr); | |
35c08157 | 12222 | |
1c8f6a4d KLC |
12223 | /* It is impossible to delete blank, so just continue. */ |
12224 | continue; | |
12225 | case R_NDS32_TLS_LE_ADD: | |
12226 | nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs, | |
12227 | contents, isymbuf, symtab_hdr, again); | |
12228 | /* It is impossible to delete blank, so just continue. */ | |
12229 | continue; | |
12230 | case R_NDS32_TLS_LE_LS: | |
12231 | nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs, | |
12232 | contents, isymbuf, symtab_hdr, again); | |
12233 | continue; | |
12234 | case R_NDS32_PTR: | |
12235 | removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs, | |
12236 | &insn_len, &seq_len, contents); | |
12237 | break; | |
12238 | case R_NDS32_PLT_GOT_SUFF: | |
12239 | nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel, | |
12240 | internal_relocs, contents, | |
12241 | isymbuf, symtab_hdr, again); | |
12242 | /* It is impossible to delete blank, so just continue. */ | |
12243 | continue; | |
12244 | case R_NDS32_GOT_SUFF: | |
12245 | nds32_elf_relax_got_suff (link_info, abfd, sec, irel, | |
12246 | internal_relocs, contents, | |
12247 | symtab_hdr, again); | |
12248 | /* It is impossible to delete blank, so just continue. */ | |
12249 | continue; | |
12250 | case R_NDS32_GOTOFF_SUFF: | |
12251 | nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel, | |
12252 | internal_relocs, contents, | |
12253 | isymbuf, symtab_hdr, again); | |
12254 | /* It is impossible to delete blank, so just continue. */ | |
12255 | continue; | |
12256 | default: | |
12257 | continue; | |
12258 | ||
12259 | } | |
12260 | if (removed && seq_len - insn_len > 0) | |
12261 | { | |
12262 | if (!insert_nds32_elf_blank | |
12263 | (&relax_blank_list, irel->r_offset + insn_len, | |
12264 | seq_len - insn_len)) | |
12265 | goto error_return; | |
12266 | *again = TRUE; | |
35c08157 | 12267 | } |
1c8f6a4d KLC |
12268 | } |
12269 | ||
12270 | calc_nds32_blank_total (relax_blank_list); | |
12271 | ||
12272 | if (table->relax_fp_as_gp) | |
12273 | { | |
12274 | if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs, | |
12275 | irelend, isymbuf)) | |
12276 | goto error_return; | |
35c08157 | 12277 | |
1c8f6a4d | 12278 | if (*again == FALSE) |
35c08157 | 12279 | { |
1c8f6a4d KLC |
12280 | if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs, |
12281 | irelend)) | |
12282 | goto error_return; | |
35c08157 KLC |
12283 | } |
12284 | } | |
1c8f6a4d KLC |
12285 | |
12286 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); | |
12287 | ||
12288 | if (*again == FALSE) | |
12289 | { | |
12290 | if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents, | |
12291 | &relax_blank_list, optimize, opt_size)) | |
12292 | goto error_return; | |
12293 | } | |
12294 | ||
12295 | /* It doesn't matter optimize_for_space_no_align anymore. | |
35c08157 KLC |
12296 | If object file is assembled with flag '-Os', |
12297 | the we don't adjust jump-destination on 4-byte boundary. */ | |
12298 | ||
12299 | if (relax_blank_list) | |
12300 | { | |
12301 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
12302 | relax_blank_list = NULL; | |
12303 | } | |
12304 | ||
12305 | if (*again == FALSE) | |
12306 | { | |
12307 | /* Closing the section, so we don't relax it anymore. */ | |
12308 | bfd_vma sec_size_align; | |
12309 | Elf_Internal_Rela *tmp_rel; | |
12310 | ||
12311 | /* Pad to alignment boundary. Only handle current section alignment. */ | |
12312 | sec_size_align = (sec->size + (~((-1) << sec->alignment_power))) | |
12313 | & ((-1) << sec->alignment_power); | |
12314 | if ((sec_size_align - sec->size) & 0x2) | |
12315 | { | |
12316 | insn16 = NDS32_NOP16; | |
12317 | bfd_putb16 (insn16, contents + sec->size); | |
12318 | sec->size += 2; | |
12319 | } | |
12320 | ||
12321 | while (sec_size_align != sec->size) | |
12322 | { | |
12323 | insn = NDS32_NOP32; | |
12324 | bfd_putb32 (insn, contents + sec->size); | |
12325 | sec->size += 4; | |
12326 | } | |
12327 | ||
1c8f6a4d KLC |
12328 | tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs, |
12329 | irelend, R_NDS32_RELAX_ENTRY); | |
35c08157 KLC |
12330 | if (tmp_rel != irelend) |
12331 | tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG; | |
12332 | ||
12333 | clean_nds32_elf_blank (); | |
12334 | } | |
12335 | ||
12336 | finish: | |
12337 | if (internal_relocs != NULL | |
12338 | && elf_section_data (sec)->relocs != internal_relocs) | |
12339 | free (internal_relocs); | |
12340 | ||
12341 | if (contents != NULL | |
12342 | && elf_section_data (sec)->this_hdr.contents != contents) | |
12343 | free (contents); | |
12344 | ||
12345 | if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf) | |
12346 | free (isymbuf); | |
12347 | ||
12348 | return result; | |
12349 | ||
12350 | error_return: | |
12351 | result = FALSE; | |
12352 | goto finish; | |
12353 | } | |
12354 | ||
12355 | static struct bfd_elf_special_section const nds32_elf_special_sections[] = | |
12356 | { | |
12357 | {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE}, | |
12358 | {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE}, | |
12359 | {NULL, 0, 0, 0, 0} | |
12360 | }; | |
12361 | ||
12362 | static bfd_boolean | |
12363 | nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED, | |
12364 | struct bfd_link_info *info, | |
12365 | void *finfo ATTRIBUTE_UNUSED, | |
12366 | bfd_boolean (*func) (void *, const char *, | |
12367 | Elf_Internal_Sym *, | |
12368 | asection *, | |
12369 | struct elf_link_hash_entry *) | |
12370 | ATTRIBUTE_UNUSED) | |
12371 | { | |
12372 | FILE *sym_ld_script = NULL; | |
12373 | struct elf_nds32_link_hash_table *table; | |
12374 | ||
12375 | table = nds32_elf_hash_table (info); | |
12376 | sym_ld_script = table->sym_ld_script; | |
12377 | ||
12378 | if (check_start_export_sym) | |
12379 | fprintf (sym_ld_script, "}\n"); | |
12380 | ||
12381 | return TRUE; | |
12382 | } | |
12383 | ||
12384 | static enum elf_reloc_type_class | |
12385 | nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
12386 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
12387 | const Elf_Internal_Rela *rela) | |
12388 | { | |
12389 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
12390 | { | |
12391 | case R_NDS32_RELATIVE: | |
12392 | return reloc_class_relative; | |
12393 | case R_NDS32_JMP_SLOT: | |
12394 | return reloc_class_plt; | |
12395 | case R_NDS32_COPY: | |
12396 | return reloc_class_copy; | |
12397 | default: | |
12398 | return reloc_class_normal; | |
12399 | } | |
12400 | } | |
12401 | ||
12402 | /* Put target dependent option into info hash table. */ | |
12403 | void | |
12404 | bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info, | |
12405 | int relax_fp_as_gp, | |
12406 | int eliminate_gc_relocs, | |
12407 | FILE * sym_ld_script, int load_store_relax, | |
12408 | int target_optimize, int relax_status, | |
12409 | int relax_round, FILE * ex9_export_file, | |
12410 | FILE * ex9_import_file, | |
12411 | int update_ex9_table, int ex9_limit, | |
12412 | bfd_boolean ex9_loop_aware, | |
12413 | bfd_boolean ifc_loop_aware) | |
12414 | { | |
12415 | struct elf_nds32_link_hash_table *table; | |
12416 | ||
12417 | table = nds32_elf_hash_table (link_info); | |
12418 | if (table == NULL) | |
12419 | return; | |
12420 | ||
12421 | table->relax_fp_as_gp = relax_fp_as_gp; | |
12422 | table->eliminate_gc_relocs = eliminate_gc_relocs; | |
12423 | table->sym_ld_script = sym_ld_script; | |
12424 | table ->load_store_relax = load_store_relax; | |
12425 | table->target_optimize = target_optimize; | |
12426 | table->relax_status = relax_status; | |
12427 | table->relax_round = relax_round; | |
12428 | table->ex9_export_file = ex9_export_file; | |
12429 | table->ex9_import_file = ex9_import_file; | |
12430 | table->update_ex9_table = update_ex9_table; | |
12431 | table->ex9_limit = ex9_limit; | |
12432 | table->ex9_loop_aware = ex9_loop_aware; | |
12433 | table->ifc_loop_aware = ifc_loop_aware; | |
12434 | } | |
12435 | \f | |
12436 | /* These functions and data-structures are used for fp-as-gp | |
12437 | optimization. */ | |
12438 | ||
12439 | #define FAG_THRESHOLD 3 /* At least 3 gp-access. */ | |
1c8f6a4d KLC |
12440 | /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between |
12441 | the read-only section and read-write section. */ | |
12442 | #define FAG_WINDOW (508 - 32) | |
35c08157 KLC |
12443 | |
12444 | /* An nds32_fag represent a gp-relative access. | |
12445 | We find best fp-base by using a sliding window | |
12446 | to find a base address which can cover most gp-access. */ | |
12447 | struct nds32_fag | |
12448 | { | |
12449 | struct nds32_fag *next; /* NULL-teminated linked list. */ | |
12450 | bfd_vma addr; /* The address of this fag. */ | |
12451 | Elf_Internal_Rela **relas; /* The relocations associated with this fag. | |
12452 | It is used for applying FP7U2_FLAG. */ | |
12453 | int count; /* How many times this address is referred. | |
12454 | There should be exactly `count' relocations | |
12455 | in relas. */ | |
12456 | int relas_capcity; /* The buffer size of relas. | |
12457 | We use an array instead of linked-list, | |
12458 | and realloc is used to adjust buffer size. */ | |
12459 | }; | |
12460 | ||
12461 | static void | |
12462 | nds32_fag_init (struct nds32_fag *head) | |
12463 | { | |
12464 | memset (head, 0, sizeof (struct nds32_fag)); | |
12465 | } | |
12466 | ||
12467 | static void | |
12468 | nds32_fag_verify (struct nds32_fag *head) | |
12469 | { | |
12470 | struct nds32_fag *iter; | |
12471 | struct nds32_fag *prev; | |
12472 | ||
12473 | prev = NULL; | |
12474 | iter = head->next; | |
12475 | while (iter) | |
12476 | { | |
12477 | if (prev && prev->addr >= iter->addr) | |
12478 | puts ("Bug in fp-as-gp insertion."); | |
12479 | prev = iter; | |
12480 | iter = iter->next; | |
12481 | } | |
12482 | } | |
12483 | ||
12484 | /* Insert a fag in ascending order. | |
12485 | If a fag of the same address already exists, | |
12486 | they are chained by relas array. */ | |
12487 | ||
12488 | static void | |
12489 | nds32_fag_insert (struct nds32_fag *head, bfd_vma addr, | |
12490 | Elf_Internal_Rela * rel) | |
12491 | { | |
12492 | struct nds32_fag *iter; | |
12493 | struct nds32_fag *new_fag; | |
12494 | const int INIT_RELAS_CAP = 4; | |
12495 | ||
12496 | for (iter = head; | |
12497 | iter->next && iter->next->addr <= addr; | |
12498 | iter = iter->next) | |
12499 | /* Find somewhere to insert. */ ; | |
12500 | ||
12501 | /* `iter' will be equal to `head' if the list is empty. */ | |
12502 | if (iter != head && iter->addr == addr) | |
12503 | { | |
12504 | /* The address exists in the list. | |
12505 | Insert `rel' into relocation list, relas. */ | |
12506 | ||
12507 | /* Check whether relas is big enough. */ | |
12508 | if (iter->count >= iter->relas_capcity) | |
12509 | { | |
12510 | iter->relas_capcity *= 2; | |
12511 | iter->relas = bfd_realloc | |
12512 | (iter->relas, iter->relas_capcity * sizeof (void *)); | |
12513 | } | |
12514 | iter->relas[iter->count++] = rel; | |
12515 | return; | |
12516 | } | |
12517 | ||
12518 | /* This is a new address. Create a fag node for it. */ | |
12519 | new_fag = bfd_malloc (sizeof (struct nds32_fag)); | |
12520 | memset (new_fag, 0, sizeof (*new_fag)); | |
12521 | new_fag->addr = addr; | |
12522 | new_fag->count = 1; | |
12523 | new_fag->next = iter->next; | |
12524 | new_fag->relas_capcity = INIT_RELAS_CAP; | |
12525 | new_fag->relas = (Elf_Internal_Rela **) | |
12526 | bfd_malloc (new_fag->relas_capcity * sizeof (void *)); | |
12527 | new_fag->relas[0] = rel; | |
12528 | iter->next = new_fag; | |
12529 | ||
12530 | nds32_fag_verify (head); | |
12531 | } | |
12532 | ||
12533 | static void | |
12534 | nds32_fag_free_list (struct nds32_fag *head) | |
12535 | { | |
12536 | struct nds32_fag *iter; | |
12537 | ||
12538 | iter = head->next; | |
12539 | while (iter) | |
12540 | { | |
12541 | struct nds32_fag *tmp = iter; | |
12542 | iter = iter->next; | |
12543 | free (tmp->relas); | |
12544 | tmp->relas = NULL; | |
12545 | free (tmp); | |
12546 | } | |
12547 | } | |
12548 | ||
35c08157 KLC |
12549 | /* Find the best fp-base address. |
12550 | The relocation associated with that address is returned, | |
12551 | so we can track the symbol instead of a fixed address. | |
12552 | ||
12553 | When relaxation, the address of an datum may change, | |
12554 | because a text section is shrinked, so the data section | |
1c8f6a4d | 12555 | moves forward. If the aligments of text and data section |
35c08157 KLC |
12556 | are different, their distance may change too. |
12557 | Therefore, tracking a fixed address is not appriate. */ | |
12558 | ||
12559 | static int | |
12560 | nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp) | |
12561 | { | |
12562 | struct nds32_fag *base; /* First fag in the window. */ | |
12563 | struct nds32_fag *last; /* First fag outside the window. */ | |
12564 | int accu = 0; /* Usage accumulation. */ | |
12565 | struct nds32_fag *best; /* Best fag. */ | |
12566 | int baccu = 0; /* Best accumulation. */ | |
12567 | ||
12568 | /* Use first fag for initial, and find the last fag in the window. | |
12569 | ||
12570 | In each iteration, we could simply subtract previous fag | |
12571 | and accumulate following fags which are inside the window, | |
12572 | untill we each the end. */ | |
12573 | ||
1c8f6a4d KLC |
12574 | if (head->next == NULL) |
12575 | { | |
12576 | *bestpp = NULL; | |
12577 | return 0; | |
12578 | } | |
35c08157 KLC |
12579 | |
12580 | /* Initialize base. */ | |
12581 | base = head->next; | |
12582 | best = base; | |
12583 | for (last = base; | |
12584 | last && last->addr < base->addr + FAG_WINDOW; | |
12585 | last = last->next) | |
12586 | accu += last->count; | |
12587 | ||
12588 | baccu = accu; | |
12589 | ||
12590 | /* Record the best base in each iteration. */ | |
12591 | while (base->next) | |
1c8f6a4d KLC |
12592 | { |
12593 | accu -= base->count; | |
12594 | base = base->next; | |
12595 | /* Account fags in window. */ | |
12596 | for (/* Nothing. */; | |
12597 | last && last->addr < base->addr + FAG_WINDOW; | |
12598 | last = last->next) | |
12599 | accu += last->count; | |
12600 | ||
12601 | /* A better fp-base? */ | |
12602 | if (accu > baccu) | |
12603 | { | |
12604 | best = base; | |
12605 | baccu = accu; | |
12606 | } | |
12607 | } | |
35c08157 KLC |
12608 | |
12609 | if (bestpp) | |
12610 | *bestpp = best; | |
12611 | return baccu; | |
12612 | } | |
12613 | ||
12614 | /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses, | |
12615 | so we can convert it fo fp-relative access later. | |
12616 | `best_fag' is the best fp-base. Only those inside the window | |
12617 | of best_fag is applied the flag. */ | |
12618 | ||
12619 | static bfd_boolean | |
12620 | nds32_fag_mark_relax (struct bfd_link_info *link_info, | |
12621 | bfd *abfd, struct nds32_fag *best_fag, | |
12622 | Elf_Internal_Rela *internal_relocs, | |
12623 | Elf_Internal_Rela *irelend) | |
12624 | { | |
12625 | struct nds32_fag *ifag; | |
12626 | bfd_vma best_fpbase, gp; | |
12627 | bfd *output_bfd; | |
12628 | ||
12629 | output_bfd = abfd->sections->output_section->owner; | |
12630 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
12631 | best_fpbase = best_fag->addr; | |
12632 | ||
1c8f6a4d KLC |
12633 | if (best_fpbase > gp + sdata_range[1][1] |
12634 | || best_fpbase < gp - sdata_range[1][0]) | |
35c08157 KLC |
12635 | return FALSE; |
12636 | ||
12637 | /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag, | |
12638 | so we know they can be converted to lwi37.fp. */ | |
12639 | for (ifag = best_fag; | |
12640 | ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next) | |
12641 | { | |
12642 | int i; | |
12643 | ||
12644 | for (i = 0; i < ifag->count; i++) | |
12645 | { | |
12646 | Elf_Internal_Rela *insn16_rel; | |
12647 | Elf_Internal_Rela *fag_rel; | |
12648 | ||
12649 | fag_rel = ifag->relas[i]; | |
12650 | ||
12651 | /* Only if this is within the WINDOWS, FP7U2_FLAG | |
12652 | is applied. */ | |
12653 | ||
12654 | insn16_rel = find_relocs_at_address | |
12655 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12656 | ||
12657 | if (insn16_rel != irelend) | |
12658 | insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG; | |
12659 | } | |
12660 | } | |
12661 | return TRUE; | |
12662 | } | |
12663 | ||
1c8f6a4d KLC |
12664 | /* Reset INSN16 to clean fp as gp. */ |
12665 | ||
12666 | static void | |
12667 | nds32_fag_unmark_relax (struct nds32_fag *fag, | |
12668 | Elf_Internal_Rela *internal_relocs, | |
12669 | Elf_Internal_Rela *irelend) | |
12670 | { | |
12671 | struct nds32_fag *ifag; | |
12672 | int i; | |
12673 | Elf_Internal_Rela *insn16_rel; | |
12674 | Elf_Internal_Rela *fag_rel; | |
12675 | ||
12676 | for (ifag = fag; ifag; ifag = ifag->next) | |
12677 | { | |
12678 | for (i = 0; i < ifag->count; i++) | |
12679 | { | |
12680 | fag_rel = ifag->relas[i]; | |
12681 | ||
12682 | /* Restore the INSN16 relocation. */ | |
12683 | insn16_rel = find_relocs_at_address | |
12684 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); | |
12685 | ||
12686 | if (insn16_rel != irelend) | |
12687 | insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG; | |
12688 | } | |
12689 | } | |
12690 | } | |
12691 | ||
35c08157 KLC |
12692 | /* This is the main function of fp-as-gp optimization. |
12693 | It should be called by relax_section. */ | |
12694 | ||
12695 | static bfd_boolean | |
12696 | nds32_relax_fp_as_gp (struct bfd_link_info *link_info, | |
12697 | bfd *abfd, asection *sec, | |
12698 | Elf_Internal_Rela *internal_relocs, | |
12699 | Elf_Internal_Rela *irelend, | |
12700 | Elf_Internal_Sym *isymbuf) | |
12701 | { | |
12702 | Elf_Internal_Rela *begin_rel = NULL; | |
12703 | Elf_Internal_Rela *irel; | |
12704 | struct nds32_fag fag_head; | |
12705 | Elf_Internal_Shdr *symtab_hdr; | |
12706 | bfd_byte *contents; | |
1c8f6a4d | 12707 | bfd_boolean ifc_inside = FALSE; |
35c08157 KLC |
12708 | |
12709 | /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */ | |
12710 | ||
12711 | /* Per-function fp-base selection. | |
12712 | 1. Create a list for all the gp-relative access. | |
12713 | 2. Base on those gp-relative address, | |
12714 | find a fp-base which can cover most access. | |
12715 | 3. Use the fp-base for fp-as-gp relaxation. | |
12716 | ||
12717 | NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times), | |
12718 | we should | |
12719 | 1. delete the `la $fp, _FP_BASE_' instruction and | |
12720 | 2. not convert lwi.gp to lwi37.fp. | |
12721 | ||
12722 | To delete the _FP_BASE_ instruction, we simply apply | |
12723 | R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it. | |
12724 | ||
12725 | To suppress the conversion, we simply NOT to apply | |
12726 | R_NDS32_INSN16_FP7U2_FLAG flag. */ | |
12727 | ||
12728 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12729 | ||
12730 | if (!nds32_get_section_contents (abfd, sec, &contents) | |
12731 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) | |
12732 | return FALSE; | |
12733 | ||
12734 | /* Check whether it is worth for fp-as-gp optimization, | |
12735 | i.e., at least 3 gp-load. | |
12736 | ||
12737 | Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT | |
12738 | apply this optimization. */ | |
12739 | ||
12740 | for (irel = internal_relocs; irel < irelend; irel++) | |
12741 | { | |
12742 | /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region. | |
12743 | One we enter the begin of the region, we track all the LW/ST | |
12744 | instructions, so when we leave the region, we try to find | |
12745 | the best fp-base address for those LW/ST instructions. */ | |
12746 | ||
12747 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12748 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12749 | { | |
12750 | /* Begin of the region. */ | |
12751 | if (begin_rel) | |
12752 | (*_bfd_error_handler) (_("%B: Nested OMIT_FP in %A."), abfd, sec); | |
12753 | ||
12754 | begin_rel = irel; | |
12755 | nds32_fag_init (&fag_head); | |
1c8f6a4d | 12756 | ifc_inside = FALSE; |
35c08157 KLC |
12757 | } |
12758 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12759 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) | |
12760 | { | |
12761 | int accu; | |
1c8f6a4d | 12762 | struct nds32_fag *best_fag, *tmp_fag; |
35c08157 KLC |
12763 | int dist; |
12764 | ||
12765 | /* End of the region. | |
12766 | Check whether it is worth to do fp-as-gp. */ | |
12767 | ||
12768 | if (begin_rel == NULL) | |
12769 | { | |
12770 | (*_bfd_error_handler) (_("%B: Unmatched OMIT_FP in %A."), abfd, sec); | |
12771 | continue; | |
12772 | } | |
12773 | ||
12774 | accu = nds32_fag_find_base (&fag_head, &best_fag); | |
12775 | ||
1c8f6a4d KLC |
12776 | /* Clean FP7U2_FLAG because they may set ever. */ |
12777 | tmp_fag = fag_head.next; | |
12778 | nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend); | |
12779 | ||
35c08157 KLC |
12780 | /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */ |
12781 | if (accu < FAG_THRESHOLD | |
12782 | || !nds32_fag_mark_relax (link_info, abfd, best_fag, | |
12783 | internal_relocs, irelend)) | |
12784 | { | |
12785 | /* Not worth to do fp-as-gp. */ | |
12786 | begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12787 | begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12788 | irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; | |
12789 | irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; | |
12790 | nds32_fag_free_list (&fag_head); | |
12791 | begin_rel = NULL; | |
12792 | continue; | |
12793 | } | |
12794 | ||
12795 | /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler, | |
12796 | so we use it to record the distance to the reloction of best | |
12797 | fp-base. */ | |
12798 | dist = best_fag->relas[0] - begin_rel; | |
12799 | BFD_ASSERT (dist > 0 && dist < 0xffffff); | |
12800 | /* Use high 16 bits of addend to record the _FP_BASE_ matched | |
12801 | relocation. And get the base value when relocating. */ | |
1c8f6a4d | 12802 | begin_rel->r_addend &= (0x1 << 16) - 1; |
35c08157 KLC |
12803 | begin_rel->r_addend |= dist << 16; |
12804 | ||
12805 | nds32_fag_free_list (&fag_head); | |
12806 | begin_rel = NULL; | |
12807 | } | |
12808 | ||
1c8f6a4d | 12809 | if (begin_rel == NULL || ifc_inside) |
35c08157 KLC |
12810 | /* Skip if we are not in the region of fp-as-gp. */ |
12811 | continue; | |
12812 | ||
12813 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA | |
12814 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA) | |
12815 | { | |
12816 | bfd_vma addr; | |
12817 | uint32_t insn; | |
12818 | ||
12819 | /* A gp-relative access is found. Insert it to the fag-list. */ | |
12820 | ||
12821 | /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */ | |
12822 | insn = bfd_getb32 (contents + irel->r_offset); | |
12823 | if (!N32_IS_RT3 (insn)) | |
12824 | continue; | |
12825 | ||
12826 | addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); | |
12827 | nds32_fag_insert (&fag_head, addr, irel); | |
12828 | } | |
12829 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA) | |
12830 | { | |
12831 | begin_rel = NULL; | |
12832 | } | |
1c8f6a4d KLC |
12833 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA |
12834 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) | |
12835 | { | |
12836 | /* Suppress fp as gp when encounter ifc. */ | |
12837 | ifc_inside = TRUE; | |
12838 | } | |
35c08157 KLC |
12839 | } |
12840 | ||
12841 | return TRUE; | |
12842 | } | |
12843 | ||
12844 | /* Remove unused `la $fp, _FD_BASE_' instruction. */ | |
12845 | ||
12846 | static bfd_boolean | |
12847 | nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec, | |
12848 | Elf_Internal_Rela *internal_relocs, | |
12849 | Elf_Internal_Rela *irelend) | |
12850 | { | |
12851 | Elf_Internal_Rela *irel; | |
12852 | Elf_Internal_Shdr *symtab_hdr; | |
12853 | bfd_byte *contents = NULL; | |
12854 | nds32_elf_blank_t *relax_blank_list = NULL; | |
12855 | bfd_boolean result = TRUE; | |
12856 | bfd_boolean unused_region = FALSE; | |
12857 | ||
12858 | /* | |
12859 | NOTE: Disable fp-as-gp if we encounter ifcall relocations. | |
12860 | * R_NDS32_17IFC_PCREL_RELA | |
12861 | * R_NDS32_10IFCU_PCREL_RELA | |
12862 | ||
12863 | CASE?????????????? | |
12864 | */ | |
12865 | ||
12866 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
12867 | nds32_get_section_contents (abfd, sec, &contents); | |
12868 | ||
12869 | for (irel = internal_relocs; irel < irelend; irel++) | |
12870 | { | |
12871 | /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP | |
12872 | we marked to in previous pass. | |
12873 | DO NOT scan relocations again, since we've alreadly decided it | |
12874 | and set the flag. */ | |
12875 | const char *syname; | |
12876 | int syndx; | |
12877 | uint32_t insn; | |
12878 | ||
12879 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
12880 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12881 | unused_region = TRUE; | |
12882 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END | |
12883 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) | |
12884 | unused_region = FALSE; | |
12885 | ||
12886 | /* We're not in the region. */ | |
12887 | if (!unused_region) | |
12888 | continue; | |
12889 | ||
12890 | /* _FP_BASE_ must be a GLOBAL symbol. */ | |
12891 | syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; | |
12892 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) | |
12893 | continue; | |
12894 | ||
12895 | /* The symbol name must be _FP_BASE_. */ | |
12896 | syname = elf_sym_hashes (abfd)[syndx]->root.root.string; | |
12897 | if (strcmp (syname, FP_BASE_NAME) != 0) | |
12898 | continue; | |
12899 | ||
12900 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA) | |
12901 | { | |
12902 | /* addi.gp $fp, -256 */ | |
12903 | insn = bfd_getb32 (contents + irel->r_offset); | |
12904 | if (insn != INSN_ADDIGP_TO_FP) | |
12905 | continue; | |
12906 | } | |
12907 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA) | |
12908 | { | |
12909 | /* addi $fp, $gp, -256 */ | |
12910 | insn = bfd_getb32 (contents + irel->r_offset); | |
12911 | if (insn != INSN_ADDI_GP_TO_FP) | |
12912 | continue; | |
12913 | } | |
12914 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA) | |
12915 | { | |
12916 | /* movi $fp, FP_BASE */ | |
12917 | insn = bfd_getb32 (contents + irel->r_offset); | |
12918 | if (insn != INSN_MOVI_TO_FP) | |
12919 | continue; | |
12920 | } | |
12921 | else | |
12922 | continue; | |
12923 | ||
12924 | /* We got here because a FP_BASE instruction is found. */ | |
12925 | if (!insert_nds32_elf_blank_recalc_total | |
12926 | (&relax_blank_list, irel->r_offset, 4)) | |
12927 | goto error_return; | |
12928 | } | |
12929 | ||
12930 | finish: | |
12931 | if (relax_blank_list) | |
12932 | { | |
12933 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
12934 | relax_blank_list = NULL; | |
12935 | } | |
12936 | return result; | |
12937 | ||
12938 | error_return: | |
12939 | result = FALSE; | |
12940 | goto finish; | |
12941 | } | |
1c8f6a4d KLC |
12942 | |
12943 | /* This is a version of bfd_generic_get_relocated_section_contents. | |
12944 | We need this variety because relaxation will modify the dwarf | |
12945 | infomation. When there is undefined symbol reference error mesage, | |
12946 | linker need to dump line number where the symbol be used. However | |
12947 | the address is be relaxed, it can not get the original dwarf contents. | |
12948 | The variety only modify function call for reading in the section. */ | |
12949 | ||
12950 | static bfd_byte * | |
12951 | nds32_elf_get_relocated_section_contents (bfd *abfd, | |
12952 | struct bfd_link_info *link_info, | |
12953 | struct bfd_link_order *link_order, | |
12954 | bfd_byte *data, | |
12955 | bfd_boolean relocatable, | |
12956 | asymbol **symbols) | |
12957 | { | |
12958 | bfd *input_bfd = link_order->u.indirect.section->owner; | |
12959 | asection *input_section = link_order->u.indirect.section; | |
12960 | long reloc_size; | |
12961 | arelent **reloc_vector; | |
12962 | long reloc_count; | |
12963 | ||
12964 | reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); | |
12965 | if (reloc_size < 0) | |
12966 | return NULL; | |
12967 | ||
12968 | /* Read in the section. */ | |
12969 | if (!nds32_get_section_contents (input_bfd, input_section, &data)) | |
12970 | return NULL; | |
12971 | ||
12972 | if (reloc_size == 0) | |
12973 | return data; | |
12974 | ||
12975 | reloc_vector = (arelent **) bfd_malloc (reloc_size); | |
12976 | if (reloc_vector == NULL) | |
12977 | return NULL; | |
12978 | ||
12979 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, | |
12980 | reloc_vector, symbols); | |
12981 | if (reloc_count < 0) | |
12982 | goto error_return; | |
12983 | ||
12984 | if (reloc_count > 0) | |
12985 | { | |
12986 | arelent **parent; | |
12987 | for (parent = reloc_vector; *parent != NULL; parent++) | |
12988 | { | |
12989 | char *error_message = NULL; | |
12990 | asymbol *symbol; | |
12991 | bfd_reloc_status_type r; | |
12992 | ||
12993 | symbol = *(*parent)->sym_ptr_ptr; | |
12994 | if (symbol->section && discarded_section (symbol->section)) | |
12995 | { | |
12996 | bfd_byte *p; | |
12997 | static reloc_howto_type none_howto | |
12998 | = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, | |
12999 | "unused", FALSE, 0, 0, FALSE); | |
13000 | ||
13001 | p = data + (*parent)->address * bfd_octets_per_byte (input_bfd); | |
13002 | _bfd_clear_contents ((*parent)->howto, input_bfd, input_section, | |
13003 | p); | |
13004 | (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
13005 | (*parent)->addend = 0; | |
13006 | (*parent)->howto = &none_howto; | |
13007 | r = bfd_reloc_ok; | |
13008 | } | |
13009 | else | |
13010 | r = bfd_perform_relocation (input_bfd, *parent, data, | |
13011 | input_section, | |
13012 | relocatable ? abfd : NULL, | |
13013 | &error_message); | |
13014 | ||
13015 | if (relocatable) | |
13016 | { | |
13017 | asection *os = input_section->output_section; | |
13018 | ||
13019 | /* A partial link, so keep the relocs. */ | |
13020 | os->orelocation[os->reloc_count] = *parent; | |
13021 | os->reloc_count++; | |
13022 | } | |
13023 | ||
13024 | if (r != bfd_reloc_ok) | |
13025 | { | |
13026 | switch (r) | |
13027 | { | |
13028 | case bfd_reloc_undefined: | |
13029 | if (!((*link_info->callbacks->undefined_symbol) | |
13030 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13031 | input_bfd, input_section, (*parent)->address, TRUE))) | |
13032 | goto error_return; | |
13033 | break; | |
13034 | case bfd_reloc_dangerous: | |
13035 | BFD_ASSERT (error_message != NULL); | |
13036 | if (!((*link_info->callbacks->reloc_dangerous) | |
13037 | (link_info, error_message, input_bfd, input_section, | |
13038 | (*parent)->address))) | |
13039 | goto error_return; | |
13040 | break; | |
13041 | case bfd_reloc_overflow: | |
13042 | if (!((*link_info->callbacks->reloc_overflow) | |
13043 | (link_info, NULL, | |
13044 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), | |
13045 | (*parent)->howto->name, (*parent)->addend, | |
13046 | input_bfd, input_section, (*parent)->address))) | |
13047 | goto error_return; | |
13048 | break; | |
13049 | case bfd_reloc_outofrange: | |
13050 | /* PR ld/13730: | |
13051 | This error can result when processing some partially | |
13052 | complete binaries. Do not abort, but issue an error | |
13053 | message instead. */ | |
13054 | link_info->callbacks->einfo | |
13055 | (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"), | |
13056 | abfd, input_section, * parent); | |
13057 | goto error_return; | |
13058 | ||
13059 | default: | |
13060 | abort (); | |
13061 | break; | |
13062 | } | |
13063 | } | |
13064 | } | |
13065 | } | |
13066 | ||
13067 | free (reloc_vector); | |
13068 | return data; | |
13069 | ||
13070 | error_return: | |
13071 | free (reloc_vector); | |
13072 | return NULL; | |
13073 | } | |
35c08157 KLC |
13074 | \f |
13075 | /* Link-time IFC relaxation. | |
13076 | In this optimization, we chains jump instructions | |
13077 | of the same destination with ifcall. */ | |
13078 | ||
13079 | ||
13080 | /* List to save jal and j relocation. */ | |
13081 | struct elf_nds32_ifc_symbol_entry | |
13082 | { | |
13083 | asection *sec; | |
13084 | struct elf_link_hash_entry *h; | |
13085 | struct elf_nds32_ifc_irel_list *irel_head; | |
13086 | unsigned long insn; | |
13087 | int times; | |
13088 | int enable; /* Apply ifc. */ | |
13089 | int ex9_enable; /* Apply ifc after ex9. */ | |
13090 | struct elf_nds32_ifc_symbol_entry *next; | |
13091 | }; | |
13092 | ||
13093 | struct elf_nds32_ifc_irel_list | |
13094 | { | |
13095 | Elf_Internal_Rela *irel; | |
13096 | asection *sec; | |
13097 | bfd_vma addr; | |
13098 | /* If this is set, then it is the last instruction for | |
13099 | ifc-chain, so it must be keep for the actual branching. */ | |
13100 | int keep; | |
13101 | struct elf_nds32_ifc_irel_list *next; | |
13102 | }; | |
13103 | ||
13104 | static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL; | |
13105 | ||
13106 | /* Insert symbol of jal and j for ifc. */ | |
13107 | ||
13108 | static void | |
13109 | nds32_elf_ifc_insert_symbol (asection *sec, | |
13110 | struct elf_link_hash_entry *h, | |
13111 | Elf_Internal_Rela *irel, | |
13112 | unsigned long insn) | |
13113 | { | |
13114 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13115 | ||
13116 | /* Check there is target of existing entry the same as the new one. */ | |
13117 | while (ptr != NULL) | |
13118 | { | |
13119 | if (((h == NULL && ptr->sec == sec | |
13120 | && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info) | |
13121 | && ptr->irel_head->irel->r_addend == irel->r_addend) | |
13122 | || h != NULL) | |
13123 | && ptr->h == h | |
13124 | && ptr->insn == insn) | |
13125 | { | |
13126 | /* The same target exist, so insert into list. */ | |
13127 | struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head; | |
13128 | ||
13129 | while (irel_list->next != NULL) | |
13130 | irel_list = irel_list->next; | |
13131 | irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); | |
13132 | irel_list = irel_list->next; | |
13133 | irel_list->irel = irel; | |
13134 | irel_list->keep = 1; | |
13135 | ||
13136 | if (h == NULL) | |
13137 | irel_list->sec = NULL; | |
13138 | else | |
13139 | irel_list->sec = sec; | |
13140 | irel_list->next = NULL; | |
13141 | return; | |
13142 | } | |
13143 | if (ptr->next == NULL) | |
13144 | break; | |
13145 | ptr = ptr->next; | |
13146 | } | |
13147 | ||
13148 | /* There is no same target entry, so build a new one. */ | |
13149 | if (ifc_symbol_head == NULL) | |
13150 | { | |
13151 | ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); | |
13152 | ptr = ifc_symbol_head; | |
13153 | } | |
13154 | else | |
13155 | { | |
13156 | ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); | |
13157 | ptr = ptr->next; | |
13158 | } | |
13159 | ||
13160 | ptr->h = h; | |
13161 | ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); | |
13162 | ptr->irel_head->irel = irel; | |
13163 | ptr->insn = insn; | |
13164 | ptr->irel_head->keep = 1; | |
13165 | ||
13166 | if (h == NULL) | |
13167 | { | |
13168 | /* Local symbols. */ | |
13169 | ptr->sec = sec; | |
13170 | ptr->irel_head->sec = NULL; | |
13171 | } | |
13172 | else | |
13173 | { | |
13174 | /* Global symbol. */ | |
13175 | ptr->sec = NULL; | |
13176 | ptr->irel_head->sec = sec; | |
13177 | } | |
13178 | ||
13179 | ptr->irel_head->next = NULL; | |
13180 | ptr->times = 0; | |
13181 | ptr->enable = 0; | |
13182 | ptr->ex9_enable = 0; | |
13183 | ptr->next = NULL; | |
13184 | } | |
13185 | ||
13186 | /* Gather all jal and j instructions. */ | |
13187 | ||
13188 | static bfd_boolean | |
13189 | nds32_elf_ifc_calc (struct bfd_link_info *info, | |
13190 | bfd *abfd, asection *sec) | |
13191 | { | |
13192 | Elf_Internal_Rela *internal_relocs; | |
13193 | Elf_Internal_Rela *irelend; | |
13194 | Elf_Internal_Rela *irel; | |
13195 | Elf_Internal_Shdr *symtab_hdr; | |
13196 | bfd_byte *contents = NULL; | |
1c8f6a4d | 13197 | uint32_t insn, insn_with_reg; |
35c08157 KLC |
13198 | unsigned long r_symndx; |
13199 | struct elf_link_hash_entry *h; | |
13200 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); | |
13201 | struct elf_nds32_link_hash_table *table; | |
13202 | bfd_boolean ifc_loop_aware; | |
13203 | ||
13204 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
13205 | TRUE /* keep_memory */); | |
13206 | irelend = internal_relocs + sec->reloc_count; | |
13207 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
13208 | ||
13209 | /* Check if the object enable ifc. */ | |
13210 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, | |
13211 | R_NDS32_RELAX_ENTRY); | |
13212 | ||
13213 | if (irel == NULL | |
13214 | || irel >= irelend | |
13215 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
13216 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
13217 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG))) | |
13218 | return TRUE; | |
13219 | ||
13220 | if (!nds32_get_section_contents (abfd, sec, &contents)) | |
13221 | return FALSE; | |
13222 | ||
13223 | table = nds32_elf_hash_table (info); | |
13224 | ifc_loop_aware = table->ifc_loop_aware; | |
13225 | while (irel != NULL && irel < irelend) | |
13226 | { | |
13227 | /* Traverse all relocation and gather all of them to build the list. */ | |
13228 | ||
13229 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN) | |
13230 | { | |
13231 | if (ifc_loop_aware == 1 | |
13232 | && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0) | |
13233 | { | |
13234 | /* Check the region if loop or not. If it is true and | |
13235 | ifc-loop-aware is true, ignore the region till region end. */ | |
13236 | while (irel != NULL | |
13237 | && irel < irelend | |
13238 | && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END | |
13239 | || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)) | |
13240 | irel++; | |
13241 | } | |
13242 | } | |
13243 | ||
13244 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) | |
13245 | { | |
13246 | insn = bfd_getb32 (contents + irel->r_offset); | |
13247 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
13248 | r_symndx = ELF32_R_SYM (irel->r_info); | |
13249 | if (r_symndx < symtab_hdr->sh_info) | |
13250 | { | |
13251 | /* Local symbol. */ | |
13252 | nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg); | |
13253 | } | |
13254 | else | |
13255 | { | |
13256 | /* External symbol. */ | |
13257 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
13258 | nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg); | |
13259 | } | |
13260 | } | |
13261 | irel++; | |
13262 | } | |
13263 | return TRUE; | |
13264 | } | |
13265 | ||
13266 | /* Determine whether j and jal should be substituted. */ | |
13267 | ||
13268 | static void | |
13269 | nds32_elf_ifc_filter (struct bfd_link_info *info) | |
13270 | { | |
13271 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13272 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13273 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; | |
13274 | struct elf_nds32_link_hash_table *table; | |
13275 | int target_optimize; | |
13276 | bfd_vma address; | |
13277 | ||
13278 | table = nds32_elf_hash_table (info); | |
13279 | target_optimize = table->target_optimize; | |
13280 | while (ptr) | |
13281 | { | |
13282 | irel_ptr = ptr->irel_head; | |
13283 | if (ptr->h == NULL) | |
13284 | { | |
13285 | /* Local symbol. */ | |
13286 | irel_keeper = irel_ptr; | |
13287 | while (irel_ptr && irel_ptr->next) | |
13288 | { | |
13289 | /* Check there is jump target can be used. */ | |
13290 | if ((irel_ptr->next->irel->r_offset | |
13291 | - irel_keeper->irel->r_offset) > 1022) | |
13292 | irel_keeper = irel_ptr->next; | |
13293 | else | |
13294 | { | |
13295 | ptr->enable = 1; | |
13296 | irel_ptr->keep = 0; | |
13297 | } | |
13298 | irel_ptr = irel_ptr->next; | |
13299 | } | |
13300 | } | |
13301 | else | |
13302 | { | |
1c8f6a4d KLC |
13303 | /* Global symbol. */ |
13304 | /* We have to get the absolute address and decide | |
13305 | whether to keep it or not. */ | |
35c08157 KLC |
13306 | while (irel_ptr) |
13307 | { | |
13308 | address = (irel_ptr->irel->r_offset | |
13309 | + irel_ptr->sec->output_section->vma | |
13310 | + irel_ptr->sec->output_offset); | |
13311 | irel_ptr->addr = address; | |
13312 | irel_ptr = irel_ptr->next; | |
13313 | } | |
13314 | ||
13315 | irel_ptr = ptr->irel_head; | |
13316 | while (irel_ptr) | |
13317 | { | |
1c8f6a4d | 13318 | /* Sort by address. */ |
35c08157 KLC |
13319 | struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr; |
13320 | struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr; | |
13321 | struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL; | |
13322 | struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL; | |
13323 | ||
1c8f6a4d | 13324 | /* Get the smallest one. */ |
35c08157 KLC |
13325 | while (irel_temp->next) |
13326 | { | |
13327 | if (irel_temp->next->addr < irel_dest->addr) | |
13328 | { | |
13329 | irel_dest_prev = irel_temp; | |
13330 | irel_dest = irel_temp->next; | |
13331 | } | |
13332 | irel_temp = irel_temp->next; | |
13333 | } | |
1c8f6a4d | 13334 | |
35c08157 KLC |
13335 | if (irel_dest != irel_ptr) |
13336 | { | |
13337 | if (irel_ptr_prev) | |
13338 | irel_ptr_prev->next = irel_dest; | |
13339 | if (irel_dest_prev) | |
13340 | irel_dest_prev->next = irel_ptr; | |
13341 | irel_temp = irel_ptr->next; | |
13342 | irel_ptr->next = irel_dest->next; | |
13343 | irel_dest->next = irel_temp; | |
13344 | } | |
13345 | irel_ptr_prev = irel_ptr; | |
13346 | irel_ptr = irel_ptr->next; | |
13347 | } | |
13348 | ||
13349 | irel_ptr = ptr->irel_head; | |
13350 | irel_keeper = irel_ptr; | |
13351 | while (irel_ptr && irel_ptr->next) | |
13352 | { | |
13353 | if ((irel_ptr->next->addr - irel_keeper->addr) > 1022) | |
13354 | irel_keeper = irel_ptr->next; | |
13355 | else | |
13356 | { | |
13357 | ptr->enable = 1; | |
13358 | irel_ptr->keep = 0; | |
13359 | } | |
13360 | irel_ptr = irel_ptr->next; | |
13361 | } | |
13362 | } | |
13363 | ||
1c8f6a4d | 13364 | /* Ex9 enable. Reserve it for ex9. */ |
35c08157 KLC |
13365 | if ((target_optimize & NDS32_RELAX_EX9_ON) |
13366 | && ptr->irel_head != irel_keeper) | |
13367 | ptr->enable = 0; | |
13368 | ptr = ptr->next; | |
13369 | } | |
13370 | } | |
13371 | ||
13372 | /* Determine whether j and jal should be substituted after ex9 done. */ | |
13373 | ||
13374 | static void | |
13375 | nds32_elf_ifc_filter_after_ex9 (void) | |
13376 | { | |
13377 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13378 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13379 | ||
13380 | while (ptr) | |
13381 | { | |
13382 | if (ptr->enable == 0) | |
13383 | { | |
13384 | /* Check whether ifc is applied or not. */ | |
13385 | irel_ptr = ptr->irel_head; | |
13386 | ptr->ex9_enable = 1; | |
13387 | while (irel_ptr) | |
13388 | { | |
13389 | if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN) | |
13390 | { | |
13391 | /* Ex9 already. */ | |
13392 | ptr->ex9_enable = 0; | |
13393 | break; | |
13394 | } | |
13395 | irel_ptr = irel_ptr->next; | |
13396 | } | |
13397 | } | |
13398 | ptr = ptr->next; | |
13399 | } | |
13400 | } | |
13401 | ||
13402 | /* Wrapper to do ifc relaxation. */ | |
13403 | ||
13404 | bfd_boolean | |
13405 | nds32_elf_ifc_finish (struct bfd_link_info *info) | |
13406 | { | |
13407 | int relax_status; | |
13408 | struct elf_nds32_link_hash_table *table; | |
13409 | ||
13410 | table = nds32_elf_hash_table (info); | |
13411 | relax_status = table->relax_status; | |
13412 | ||
13413 | if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE)) | |
13414 | nds32_elf_ifc_filter (info); | |
13415 | else | |
13416 | nds32_elf_ifc_filter_after_ex9 (); | |
13417 | ||
13418 | if (!nds32_elf_ifc_replace (info)) | |
13419 | return FALSE; | |
13420 | ||
13421 | if (table) | |
13422 | table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE; | |
13423 | return TRUE; | |
13424 | } | |
13425 | ||
13426 | /* Traverse the result of ifc filter and replace it with ifcall9. */ | |
13427 | ||
13428 | static bfd_boolean | |
13429 | nds32_elf_ifc_replace (struct bfd_link_info *info) | |
13430 | { | |
13431 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13432 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13433 | nds32_elf_blank_t *relax_blank_list = NULL; | |
13434 | bfd_byte *contents = NULL; | |
13435 | Elf_Internal_Rela *internal_relocs; | |
13436 | Elf_Internal_Rela *irel; | |
13437 | Elf_Internal_Rela *irelend; | |
13438 | unsigned short insn16 = INSN_IFCALL9; | |
13439 | struct elf_nds32_link_hash_table *table; | |
13440 | int relax_status; | |
13441 | ||
13442 | table = nds32_elf_hash_table (info); | |
13443 | relax_status = table->relax_status; | |
13444 | ||
13445 | while (ptr) | |
13446 | { | |
13447 | /* Traverse the ifc gather list, and replace the | |
13448 | filter entries by ifcall9. */ | |
13449 | if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1) | |
1c8f6a4d KLC |
13450 | || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE) |
13451 | && ptr->ex9_enable == 1)) | |
35c08157 KLC |
13452 | { |
13453 | irel_ptr = ptr->irel_head; | |
13454 | if (ptr->h == NULL) | |
13455 | { | |
13456 | /* Local symbol. */ | |
13457 | internal_relocs = _bfd_elf_link_read_relocs | |
13458 | (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */); | |
13459 | irelend = internal_relocs + ptr->sec->reloc_count; | |
13460 | ||
1c8f6a4d KLC |
13461 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, |
13462 | &contents)) | |
35c08157 KLC |
13463 | return FALSE; |
13464 | ||
13465 | while (irel_ptr) | |
13466 | { | |
13467 | if (irel_ptr->keep == 0 && irel_ptr->next) | |
13468 | { | |
1c8f6a4d | 13469 | /* The one can be replaced. We have to check whether |
35c08157 KLC |
13470 | there is any alignment point in the region. */ |
13471 | irel = irel_ptr->irel; | |
1c8f6a4d KLC |
13472 | while (((irel_ptr->next->keep == 0 |
13473 | && irel < irel_ptr->next->irel) | |
35c08157 KLC |
13474 | || (irel_ptr->next->keep == 1 && irel < irelend)) |
13475 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13476 | && (irel->r_addend & 0x1f) == 2)) | |
13477 | irel++; | |
13478 | if (irel >= irelend | |
13479 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13480 | && (irel->r_addend & 0x1f) == 2 | |
1c8f6a4d KLC |
13481 | && ((irel->r_offset - get_nds32_elf_blank_total |
13482 | (&relax_blank_list, irel->r_offset, 1)) | |
13483 | & 0x02) == 0)) | |
35c08157 KLC |
13484 | { |
13485 | /* Replace by ifcall9. */ | |
13486 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13487 | if (!insert_nds32_elf_blank_recalc_total | |
13488 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) | |
13489 | return FALSE; | |
13490 | irel_ptr->irel->r_info = | |
1c8f6a4d KLC |
13491 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
13492 | R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
13493 | } |
13494 | } | |
13495 | irel_ptr = irel_ptr->next; | |
13496 | } | |
13497 | ||
13498 | /* Delete the redundant code. */ | |
13499 | if (relax_blank_list) | |
13500 | { | |
13501 | nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec, | |
13502 | relax_blank_list); | |
13503 | relax_blank_list = NULL; | |
13504 | } | |
13505 | } | |
13506 | else | |
13507 | { | |
13508 | /* Global symbol. */ | |
13509 | while (irel_ptr) | |
13510 | { | |
13511 | if (irel_ptr->keep == 0 && irel_ptr->next) | |
13512 | { | |
13513 | /* The one can be replaced, and we have to check | |
13514 | whether there is any alignment point in the region. */ | |
13515 | internal_relocs = _bfd_elf_link_read_relocs | |
13516 | (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL, | |
13517 | TRUE /* keep_memory */); | |
13518 | irelend = internal_relocs + irel_ptr->sec->reloc_count; | |
13519 | if (!nds32_get_section_contents | |
13520 | (irel_ptr->sec->owner, irel_ptr->sec, &contents)) | |
13521 | return FALSE; | |
13522 | ||
13523 | irel = irel_ptr->irel; | |
13524 | while (((irel_ptr->sec == irel_ptr->next->sec | |
13525 | && irel_ptr->next->keep == 0 | |
13526 | && irel < irel_ptr->next->irel) | |
13527 | || ((irel_ptr->sec != irel_ptr->next->sec | |
13528 | || irel_ptr->next->keep == 1) | |
13529 | && irel < irelend)) | |
13530 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13531 | && (irel->r_addend & 0x1f) == 2)) | |
13532 | irel++; | |
13533 | if (irel >= irelend | |
13534 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL | |
13535 | && (irel->r_addend & 0x1f) == 2 | |
13536 | && ((irel->r_offset | |
13537 | - get_nds32_elf_blank_total (&relax_blank_list, | |
13538 | irel->r_offset, 1)) & 0x02) == 0)) | |
13539 | { | |
13540 | /* Replace by ifcall9. */ | |
13541 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13542 | if (!insert_nds32_elf_blank_recalc_total | |
13543 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) | |
13544 | return FALSE; | |
13545 | ||
13546 | /* Delete the redundant code, and clear the relocation. */ | |
13547 | nds32_elf_relax_delete_blanks (irel_ptr->sec->owner, | |
13548 | irel_ptr->sec, | |
13549 | relax_blank_list); | |
13550 | irel_ptr->irel->r_info = | |
1c8f6a4d KLC |
13551 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
13552 | R_NDS32_10IFCU_PCREL_RELA); | |
35c08157 KLC |
13553 | relax_blank_list = NULL; |
13554 | } | |
13555 | } | |
13556 | ||
13557 | irel_ptr = irel_ptr->next; | |
13558 | } | |
13559 | } | |
13560 | } | |
13561 | ptr = ptr->next; | |
13562 | } | |
13563 | ||
13564 | return TRUE; | |
13565 | } | |
13566 | ||
13567 | /* Relocate ifcall. */ | |
13568 | ||
1c8f6a4d | 13569 | static bfd_boolean |
35c08157 KLC |
13570 | nds32_elf_ifc_reloc (void) |
13571 | { | |
13572 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; | |
13573 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
13574 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; | |
13575 | bfd_vma relocation, address; | |
13576 | unsigned short insn16; | |
35c08157 | 13577 | bfd_byte *contents = NULL; |
1c8f6a4d KLC |
13578 | static bfd_boolean done = FALSE; |
13579 | ||
13580 | if (done) | |
13581 | return TRUE; | |
13582 | ||
13583 | done = TRUE; | |
35c08157 KLC |
13584 | |
13585 | while (ptr) | |
13586 | { | |
1c8f6a4d | 13587 | /* Check the entry is enable ifcall. */ |
35c08157 KLC |
13588 | if (ptr->enable == 1 || ptr->ex9_enable == 1) |
13589 | { | |
1c8f6a4d | 13590 | /* Get the reserve jump. */ |
35c08157 KLC |
13591 | irel_ptr = ptr->irel_head; |
13592 | while (irel_ptr) | |
13593 | { | |
13594 | if (irel_ptr->keep == 1) | |
13595 | { | |
13596 | irel_keeper = irel_ptr; | |
13597 | break; | |
13598 | } | |
13599 | irel_ptr = irel_ptr->next; | |
13600 | } | |
13601 | ||
13602 | irel_ptr = ptr->irel_head; | |
13603 | if (ptr->h == NULL) | |
13604 | { | |
13605 | /* Local symbol. */ | |
13606 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, &contents)) | |
13607 | return FALSE; | |
13608 | ||
13609 | while (irel_ptr) | |
13610 | { | |
13611 | if (irel_ptr->keep == 0 | |
1c8f6a4d | 13612 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
35c08157 KLC |
13613 | { |
13614 | relocation = irel_keeper->irel->r_offset; | |
13615 | relocation = relocation - irel_ptr->irel->r_offset; | |
13616 | while (irel_keeper && relocation > 1022) | |
13617 | { | |
13618 | irel_keeper = irel_keeper->next; | |
13619 | if (irel_keeper && irel_keeper->keep == 1) | |
13620 | { | |
13621 | relocation = irel_keeper->irel->r_offset; | |
13622 | relocation = relocation - irel_ptr->irel->r_offset; | |
13623 | } | |
13624 | } | |
13625 | if (relocation > 1022) | |
13626 | { | |
13627 | /* Double check. */ | |
13628 | irel_keeper = ptr->irel_head; | |
13629 | while (irel_keeper) | |
13630 | { | |
13631 | if (irel_keeper->keep == 1) | |
13632 | { | |
13633 | relocation = irel_keeper->irel->r_offset; | |
13634 | relocation = relocation - irel_ptr->irel->r_offset; | |
13635 | } | |
13636 | if (relocation <= 1022) | |
13637 | break; | |
13638 | irel_keeper = irel_keeper->next; | |
13639 | } | |
13640 | if (!irel_keeper) | |
13641 | return FALSE; | |
13642 | } | |
1c8f6a4d KLC |
13643 | irel_ptr->irel->r_info = |
13644 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), | |
13645 | R_NDS32_NONE); | |
35c08157 KLC |
13646 | insn16 = INSN_IFCALL9 | (relocation >> 1); |
13647 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13648 | } | |
13649 | irel_ptr = irel_ptr->next; | |
13650 | } | |
13651 | } | |
13652 | else | |
13653 | { | |
13654 | /* Global symbol. */ | |
13655 | while (irel_ptr) | |
13656 | { | |
13657 | if (irel_ptr->keep == 0 | |
1c8f6a4d | 13658 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
35c08157 | 13659 | { |
1c8f6a4d | 13660 | /* Get the distance between ifcall and jump. */ |
35c08157 KLC |
13661 | relocation = (irel_keeper->irel->r_offset |
13662 | + irel_keeper->sec->output_section->vma | |
13663 | + irel_keeper->sec->output_offset); | |
13664 | address = (irel_ptr->irel->r_offset | |
13665 | + irel_ptr->sec->output_section->vma | |
13666 | + irel_ptr->sec->output_offset); | |
13667 | relocation = relocation - address; | |
1c8f6a4d KLC |
13668 | |
13669 | /* The distance is over ragne, find callee again. */ | |
35c08157 KLC |
13670 | while (irel_keeper && relocation > 1022) |
13671 | { | |
13672 | irel_keeper = irel_keeper->next; | |
13673 | if (irel_keeper && irel_keeper->keep ==1) | |
13674 | { | |
13675 | relocation = (irel_keeper->irel->r_offset | |
13676 | + irel_keeper->sec->output_section->vma | |
13677 | + irel_keeper->sec->output_offset); | |
13678 | relocation = relocation - address; | |
13679 | } | |
13680 | } | |
13681 | ||
13682 | if (relocation > 1022) | |
13683 | { | |
13684 | /* Double check. */ | |
13685 | irel_keeper = ptr->irel_head; | |
13686 | while (irel_keeper) | |
13687 | { | |
13688 | if (irel_keeper->keep == 1) | |
13689 | { | |
13690 | ||
13691 | relocation = (irel_keeper->irel->r_offset | |
13692 | + irel_keeper->sec->output_section->vma | |
13693 | + irel_keeper->sec->output_offset); | |
13694 | relocation = relocation - address; | |
13695 | } | |
13696 | if (relocation <= 1022) | |
13697 | break; | |
13698 | irel_keeper = irel_keeper->next; | |
13699 | } | |
13700 | if (!irel_keeper) | |
13701 | return FALSE; | |
13702 | } | |
13703 | if (!nds32_get_section_contents | |
1c8f6a4d KLC |
13704 | (irel_ptr->sec->owner, irel_ptr->sec, &contents)) |
13705 | return FALSE; | |
13706 | insn16 = INSN_IFCALL9 | (relocation >> 1); | |
13707 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); | |
13708 | irel_ptr->irel->r_info = | |
13709 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), | |
13710 | R_NDS32_NONE); | |
35c08157 KLC |
13711 | } |
13712 | irel_ptr =irel_ptr->next; | |
13713 | } | |
13714 | } | |
13715 | } | |
13716 | ptr = ptr->next; | |
13717 | } | |
13718 | ||
13719 | return TRUE; | |
13720 | } | |
13721 | ||
13722 | /* End of IFC relaxation. */ | |
13723 | \f | |
13724 | /* EX9 Instruction Table Relaxation. */ | |
13725 | ||
13726 | /* Global hash list. */ | |
13727 | struct elf_link_hash_entry_list | |
13728 | { | |
13729 | struct elf_link_hash_entry *h; | |
13730 | struct elf_link_hash_entry_list *next; | |
13731 | }; | |
13732 | ||
13733 | /* Save different destination but same insn. */ | |
13734 | struct elf_link_hash_entry_mul_list | |
13735 | { | |
13736 | /* Global symbol times. */ | |
13737 | int times; | |
13738 | /* Save relocation for each global symbol but useful?? */ | |
13739 | Elf_Internal_Rela *irel; | |
13740 | /* For sethi, two sethi may have the same high-part but different low-parts. */ | |
13741 | Elf_Internal_Rela rel_backup; | |
13742 | struct elf_link_hash_entry_list *h_list; | |
13743 | struct elf_link_hash_entry_mul_list *next; | |
13744 | }; | |
13745 | ||
13746 | /* Instruction hash table. */ | |
13747 | struct elf_nds32_code_hash_entry | |
13748 | { | |
13749 | struct bfd_hash_entry root; | |
13750 | int times; | |
13751 | /* For insn that can use relocation or constant ex: sethi. */ | |
13752 | int const_insn; | |
13753 | asection *sec; | |
13754 | struct elf_link_hash_entry_mul_list *m_list; | |
13755 | /* Using r_addend. */ | |
13756 | Elf_Internal_Rela *irel; | |
13757 | /* Using r_info. */ | |
13758 | Elf_Internal_Rela rel_backup; | |
13759 | }; | |
13760 | ||
13761 | /* Instruction count list. */ | |
13762 | struct elf_nds32_insn_times_entry | |
13763 | { | |
13764 | const char *string; | |
13765 | int times; | |
13766 | int order; | |
13767 | asection *sec; | |
13768 | struct elf_link_hash_entry_mul_list *m_list; | |
13769 | Elf_Internal_Rela *irel; | |
13770 | Elf_Internal_Rela rel_backup; | |
13771 | struct elf_nds32_insn_times_entry *next; | |
13772 | }; | |
13773 | ||
13774 | /* J and JAL symbol list. */ | |
13775 | struct elf_nds32_symbol_entry | |
13776 | { | |
13777 | char *string; | |
13778 | unsigned long insn; | |
13779 | struct elf_nds32_symbol_entry *next; | |
13780 | }; | |
13781 | ||
13782 | /* Relocation list. */ | |
13783 | struct elf_nds32_irel_entry | |
13784 | { | |
13785 | Elf_Internal_Rela *irel; | |
13786 | struct elf_nds32_irel_entry *next; | |
13787 | }; | |
13788 | ||
13789 | /* ex9.it insn need to be fixed. */ | |
13790 | struct elf_nds32_ex9_refix | |
13791 | { | |
13792 | Elf_Internal_Rela *irel; | |
13793 | asection *sec; | |
13794 | struct elf_link_hash_entry *h; | |
13795 | int order; | |
13796 | struct elf_nds32_ex9_refix *next; | |
13797 | }; | |
13798 | ||
13799 | static struct bfd_hash_table ex9_code_table; | |
13800 | static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL; | |
13801 | static struct elf_nds32_ex9_refix *ex9_refix_head = NULL; | |
13802 | ||
13803 | /* EX9 hash function. */ | |
13804 | ||
13805 | static struct bfd_hash_entry * | |
13806 | nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry, | |
13807 | struct bfd_hash_table *table, | |
13808 | const char *string) | |
13809 | { | |
13810 | struct elf_nds32_code_hash_entry *ret; | |
13811 | ||
13812 | /* Allocate the structure if it has not already been allocated by a | |
13813 | subclass. */ | |
13814 | if (entry == NULL) | |
13815 | { | |
13816 | entry = (struct bfd_hash_entry *) | |
13817 | bfd_hash_allocate (table, sizeof (*ret)); | |
13818 | if (entry == NULL) | |
13819 | return entry; | |
13820 | } | |
13821 | ||
13822 | /* Call the allocation method of the superclass. */ | |
13823 | entry = bfd_hash_newfunc (entry, table, string); | |
13824 | if (entry == NULL) | |
13825 | return entry; | |
13826 | ||
13827 | ret = (struct elf_nds32_code_hash_entry*) entry; | |
13828 | ret->times = 0; | |
13829 | ret->const_insn = 0; | |
13830 | ret->m_list = NULL; | |
13831 | ret->sec = NULL; | |
13832 | ret->irel = NULL; | |
13833 | return &ret->root; | |
13834 | } | |
13835 | ||
13836 | /* Insert ex9 entry | |
13837 | this insert must be stable sorted by times. */ | |
13838 | ||
13839 | static void | |
13840 | nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr) | |
13841 | { | |
13842 | struct elf_nds32_insn_times_entry *temp; | |
13843 | struct elf_nds32_insn_times_entry *temp2; | |
13844 | ||
13845 | if (ex9_insn_head == NULL) | |
13846 | { | |
13847 | ex9_insn_head = ptr; | |
13848 | ptr->next = NULL; | |
13849 | } | |
13850 | else | |
13851 | { | |
13852 | temp = ex9_insn_head; | |
13853 | temp2 = ex9_insn_head; | |
13854 | while (temp->next && | |
13855 | (temp->next->times >= ptr->times | |
13856 | || temp->times == -1)) | |
13857 | { | |
13858 | if (temp->times == -1) | |
13859 | temp2 = temp; | |
13860 | temp = temp->next; | |
13861 | } | |
13862 | if (ptr->times > temp->times && temp->times != -1) | |
13863 | { | |
13864 | ptr->next = temp; | |
13865 | if (temp2->times == -1) | |
13866 | temp2->next = ptr; | |
13867 | else | |
13868 | ex9_insn_head = ptr; | |
13869 | } | |
13870 | else if (temp->next == NULL) | |
13871 | { | |
13872 | temp->next = ptr; | |
13873 | ptr->next = NULL; | |
13874 | } | |
13875 | else | |
13876 | { | |
13877 | ptr->next = temp->next; | |
13878 | temp->next = ptr; | |
13879 | } | |
13880 | } | |
13881 | } | |
13882 | ||
13883 | /* Examine each insn times in hash table. | |
13884 | Handle multi-link hash entry. | |
13885 | ||
13886 | TODO: This function doesn't assign so much info since it is fake. */ | |
13887 | ||
13888 | static int | |
13889 | nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h) | |
13890 | { | |
13891 | struct elf_nds32_insn_times_entry *ptr; | |
13892 | int times; | |
13893 | ||
13894 | if (h->m_list == NULL) | |
13895 | { | |
13896 | /* Local symbol insn or insn without relocation. */ | |
13897 | if (h->times < 3) | |
13898 | return TRUE; | |
13899 | ||
13900 | ptr = (struct elf_nds32_insn_times_entry *) | |
13901 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13902 | ptr->times = h->times; | |
13903 | ptr->string = h->root.string; | |
13904 | ptr->m_list = NULL; | |
13905 | ptr->sec = h->sec; | |
13906 | ptr->irel = h->irel; | |
13907 | ptr->rel_backup = h->rel_backup; | |
13908 | nds32_elf_ex9_insert_entry (ptr); | |
13909 | } | |
13910 | else | |
13911 | { | |
13912 | /* Global symbol insn. */ | |
13913 | /* Only sethi insn has multiple m_list. */ | |
13914 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; | |
13915 | ||
13916 | times = 0; | |
13917 | while (m_list) | |
13918 | { | |
13919 | times += m_list->times; | |
13920 | m_list = m_list->next; | |
13921 | } | |
13922 | if (times >= 3) | |
13923 | { | |
13924 | m_list = h->m_list; | |
13925 | ptr = (struct elf_nds32_insn_times_entry *) | |
13926 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13927 | ptr->times = times; /* Use the total times. */ | |
13928 | ptr->string = h->root.string; | |
13929 | ptr->m_list = m_list; | |
13930 | ptr->sec = h->sec; | |
13931 | ptr->irel = m_list->irel; | |
13932 | ptr->rel_backup = m_list->rel_backup; | |
13933 | nds32_elf_ex9_insert_entry (ptr); | |
13934 | } | |
13935 | if (h->const_insn == 1) | |
13936 | { | |
13937 | /* sethi with constant value. */ | |
13938 | if (h->times < 3) | |
13939 | return TRUE; | |
13940 | ||
13941 | ptr = (struct elf_nds32_insn_times_entry *) | |
13942 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13943 | ptr->times = h->times; | |
13944 | ptr->string = h->root.string; | |
13945 | ptr->m_list = NULL; | |
13946 | ptr->sec = NULL; | |
13947 | ptr->irel = NULL; | |
13948 | ptr->rel_backup = h->rel_backup; | |
13949 | nds32_elf_ex9_insert_entry (ptr); | |
13950 | } | |
13951 | } | |
13952 | return TRUE; | |
13953 | } | |
13954 | ||
13955 | /* Count each insn times in hash table. | |
13956 | Handle multi-link hash entry. */ | |
13957 | ||
13958 | static int | |
13959 | nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h) | |
13960 | { | |
13961 | int reservation, times; | |
13962 | unsigned long relocation, min_relocation; | |
13963 | struct elf_nds32_insn_times_entry *ptr; | |
13964 | ||
13965 | if (h->m_list == NULL) | |
13966 | { | |
13967 | /* Local symbol insn or insn without relocation. */ | |
13968 | if (h->times < 3) | |
13969 | return TRUE; | |
13970 | ptr = (struct elf_nds32_insn_times_entry *) | |
13971 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
13972 | ptr->times = h->times; | |
13973 | ptr->string = h->root.string; | |
13974 | ptr->m_list = NULL; | |
13975 | ptr->sec = h->sec; | |
13976 | ptr->irel = h->irel; | |
13977 | ptr->rel_backup = h->rel_backup; | |
13978 | nds32_elf_ex9_insert_entry (ptr); | |
13979 | } | |
13980 | else | |
13981 | { | |
13982 | /* Global symbol insn. */ | |
13983 | /* Only sethi insn has multiple m_list. */ | |
13984 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; | |
13985 | ||
13986 | if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA | |
13987 | && m_list->next != NULL) | |
13988 | { | |
13989 | /* Sethi insn has different symbol or addend but has same hi20. */ | |
13990 | times = 0; | |
13991 | reservation = 1; | |
13992 | relocation = 0; | |
13993 | min_relocation = 0xffffffff; | |
13994 | while (m_list) | |
13995 | { | |
13996 | /* Get the minimum sethi address | |
13997 | and calculate how many entry the sethi-list have to use. */ | |
13998 | if ((m_list->h_list->h->root.type == bfd_link_hash_defined | |
13999 | || m_list->h_list->h->root.type == bfd_link_hash_defweak) | |
14000 | && (m_list->h_list->h->root.u.def.section != NULL | |
14001 | && m_list->h_list->h->root.u.def.section->output_section != NULL)) | |
14002 | { | |
14003 | relocation = (m_list->h_list->h->root.u.def.value + | |
14004 | m_list->h_list->h->root.u.def.section->output_section->vma + | |
14005 | m_list->h_list->h->root.u.def.section->output_offset); | |
14006 | relocation += m_list->irel->r_addend; | |
14007 | } | |
14008 | else | |
14009 | relocation = 0; | |
14010 | if (relocation < min_relocation) | |
14011 | min_relocation = relocation; | |
14012 | times += m_list->times; | |
14013 | m_list = m_list->next; | |
14014 | } | |
14015 | if (min_relocation < ex9_relax_size) | |
14016 | reservation = (min_relocation >> 12) + 1; | |
14017 | else | |
14018 | reservation = (min_relocation >> 12) | |
14019 | - ((min_relocation - ex9_relax_size) >> 12) + 1; | |
14020 | if (reservation < (times / 3)) | |
14021 | { | |
14022 | /* Efficient enough to use ex9. */ | |
14023 | int i; | |
14024 | ||
14025 | for (i = reservation ; i > 0; i--) | |
14026 | { | |
14027 | /* Allocate number of reservation ex9 entry. */ | |
14028 | ptr = (struct elf_nds32_insn_times_entry *) | |
14029 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14030 | ptr->times = h->m_list->times / reservation; | |
14031 | ptr->string = h->root.string; | |
14032 | ptr->m_list = h->m_list; | |
14033 | ptr->sec = h->sec; | |
14034 | ptr->irel = h->m_list->irel; | |
14035 | ptr->rel_backup = h->m_list->rel_backup; | |
14036 | nds32_elf_ex9_insert_entry (ptr); | |
14037 | } | |
14038 | } | |
14039 | } | |
14040 | else | |
14041 | { | |
14042 | /* Normal global symbol that means no different address symbol | |
14043 | using same ex9 entry. */ | |
14044 | if (m_list->times >= 3) | |
14045 | { | |
14046 | ptr = (struct elf_nds32_insn_times_entry *) | |
14047 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14048 | ptr->times = m_list->times; | |
14049 | ptr->string = h->root.string; | |
14050 | ptr->m_list = h->m_list; | |
14051 | ptr->sec = h->sec; | |
14052 | ptr->irel = h->m_list->irel; | |
14053 | ptr->rel_backup = h->m_list->rel_backup; | |
14054 | nds32_elf_ex9_insert_entry (ptr); | |
14055 | } | |
14056 | } | |
14057 | ||
14058 | if (h->const_insn == 1) | |
14059 | { | |
14060 | /* sethi with constant value. */ | |
14061 | if (h->times < 3) | |
14062 | return TRUE; | |
14063 | ||
14064 | ptr = (struct elf_nds32_insn_times_entry *) | |
14065 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
14066 | ptr->times = h->times; | |
14067 | ptr->string = h->root.string; | |
14068 | ptr->m_list = NULL; | |
14069 | ptr->sec = NULL; | |
14070 | ptr->irel = NULL; | |
14071 | ptr->rel_backup = h->rel_backup; | |
14072 | nds32_elf_ex9_insert_entry (ptr); | |
14073 | } | |
14074 | } | |
14075 | ||
14076 | return TRUE; | |
14077 | } | |
14078 | ||
14079 | /* Hash table traverse function. */ | |
14080 | ||
14081 | static void | |
14082 | nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*)) | |
14083 | { | |
14084 | unsigned int i; | |
14085 | ||
14086 | ex9_code_table.frozen = 1; | |
14087 | for (i = 0; i < ex9_code_table.size; i++) | |
14088 | { | |
14089 | struct bfd_hash_entry *p; | |
14090 | ||
14091 | for (p = ex9_code_table.table[i]; p != NULL; p = p->next) | |
14092 | if (!func ((struct elf_nds32_code_hash_entry *) p)) | |
14093 | goto out; | |
14094 | } | |
14095 | out: | |
14096 | ex9_code_table.frozen = 0; | |
14097 | } | |
14098 | ||
14099 | ||
14100 | /* Give order number to insn list. */ | |
14101 | ||
14102 | static void | |
14103 | nds32_elf_order_insn_times (struct bfd_link_info *info) | |
14104 | { | |
14105 | struct elf_nds32_insn_times_entry *ex9_insn; | |
1c8f6a4d | 14106 | struct elf_nds32_insn_times_entry *temp = NULL; |
35c08157 | 14107 | struct elf_nds32_link_hash_table *table; |
35c08157 | 14108 | int ex9_limit; |
1c8f6a4d KLC |
14109 | int number = 0; |
14110 | ||
14111 | if (ex9_insn_head == NULL) | |
14112 | return; | |
35c08157 KLC |
14113 | |
14114 | /* The max number of entries is 512. */ | |
14115 | ex9_insn = ex9_insn_head; | |
14116 | table = nds32_elf_hash_table (info); | |
14117 | ex9_limit = table->ex9_limit; | |
14118 | ||
35c08157 KLC |
14119 | ex9_insn = ex9_insn_head; |
14120 | ||
1c8f6a4d | 14121 | while (ex9_insn != NULL && number < ex9_limit) |
35c08157 | 14122 | { |
1c8f6a4d | 14123 | ex9_insn->order = number; |
35c08157 | 14124 | number++; |
1c8f6a4d | 14125 | temp = ex9_insn; |
35c08157 KLC |
14126 | ex9_insn = ex9_insn->next; |
14127 | } | |
14128 | ||
1c8f6a4d KLC |
14129 | if (ex9_insn && temp) |
14130 | temp->next = NULL; | |
35c08157 KLC |
14131 | |
14132 | while (ex9_insn != NULL) | |
14133 | { | |
14134 | /* Free useless entry. */ | |
14135 | temp = ex9_insn; | |
14136 | ex9_insn = ex9_insn->next; | |
14137 | free (temp); | |
14138 | } | |
14139 | } | |
14140 | ||
14141 | /* Build .ex9.itable section. */ | |
14142 | ||
14143 | static void | |
14144 | nds32_elf_ex9_build_itable (struct bfd_link_info *link_info) | |
14145 | { | |
14146 | asection *table_sec; | |
14147 | struct elf_nds32_insn_times_entry *ptr; | |
14148 | bfd *it_abfd; | |
14149 | int number = 0; | |
14150 | bfd_byte *contents = NULL; | |
14151 | ||
14152 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; | |
c72f2fb2 | 14153 | it_abfd = it_abfd->link.next) |
35c08157 KLC |
14154 | { |
14155 | /* Find the section .ex9.itable, and put all entries into it. */ | |
14156 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); | |
14157 | if (table_sec != NULL) | |
14158 | { | |
14159 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents)) | |
14160 | return; | |
14161 | ||
14162 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) | |
14163 | number++; | |
14164 | ||
14165 | table_sec->size = number * 4; | |
14166 | ||
14167 | if (number == 0) | |
1c8f6a4d | 14168 | return; |
35c08157 KLC |
14169 | |
14170 | elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST; | |
14171 | number = 0; | |
14172 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) | |
14173 | { | |
14174 | long val; | |
14175 | ||
14176 | val = strtol (ptr->string, NULL, 16); | |
14177 | bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4)); | |
14178 | number++; | |
14179 | } | |
14180 | break; | |
14181 | } | |
14182 | } | |
14183 | } | |
14184 | ||
14185 | /* Get insn with regs according to relocation type. */ | |
14186 | ||
14187 | static void | |
14188 | nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel, | |
1c8f6a4d | 14189 | uint32_t insn, uint32_t *insn_with_reg) |
35c08157 KLC |
14190 | { |
14191 | reloc_howto_type *howto = NULL; | |
14192 | ||
14193 | if (irel == NULL | |
14194 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) | |
14195 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) | |
14196 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) | |
14197 | { | |
14198 | *insn_with_reg = insn; | |
14199 | return; | |
14200 | } | |
14201 | ||
14202 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
14203 | *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask); | |
14204 | } | |
14205 | ||
14206 | /* Mask number of address bits according to relocation. */ | |
14207 | ||
14208 | static unsigned long | |
14209 | nds32_elf_irel_mask (Elf_Internal_Rela *irel) | |
14210 | { | |
14211 | reloc_howto_type *howto = NULL; | |
14212 | ||
14213 | if (irel == NULL | |
14214 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) | |
14215 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) | |
14216 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) | |
14217 | return 0; | |
14218 | ||
14219 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
14220 | return howto->dst_mask; | |
14221 | } | |
14222 | ||
14223 | static void | |
14224 | nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list, | |
14225 | struct elf_nds32_irel_entry *irel_ptr) | |
14226 | { | |
14227 | if (*irel_list == NULL) | |
14228 | { | |
14229 | *irel_list = irel_ptr; | |
14230 | irel_ptr->next = NULL; | |
14231 | } | |
14232 | else | |
14233 | { | |
14234 | irel_ptr->next = *irel_list; | |
14235 | *irel_list = irel_ptr; | |
14236 | } | |
14237 | } | |
14238 | ||
14239 | static void | |
14240 | nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel, | |
14241 | struct elf_link_hash_entry *h, int order) | |
14242 | { | |
14243 | struct elf_nds32_ex9_refix *ptr; | |
14244 | ||
14245 | ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix)); | |
14246 | ptr->sec = sec; | |
14247 | ptr->irel = irel; | |
14248 | ptr->h = h; | |
14249 | ptr->order = order; | |
14250 | ptr->next = NULL; | |
14251 | ||
14252 | if (ex9_refix_head == NULL) | |
14253 | ex9_refix_head = ptr; | |
14254 | else | |
14255 | { | |
14256 | struct elf_nds32_ex9_refix *temp = ex9_refix_head; | |
14257 | ||
14258 | while (temp->next != NULL) | |
14259 | temp = temp->next; | |
14260 | temp->next = ptr; | |
14261 | } | |
14262 | } | |
14263 | ||
14264 | enum | |
14265 | { | |
14266 | DATA_EXIST = 1, | |
14267 | CLEAN_PRE = 1 << 1, | |
14268 | PUSH_PRE = 1 << 2 | |
14269 | }; | |
14270 | ||
14271 | /* Check relocation type if supporting for ex9. */ | |
14272 | ||
14273 | static int | |
14274 | nds32_elf_ex9_relocation_check (struct bfd_link_info *info, | |
14275 | Elf_Internal_Rela **irel, | |
14276 | Elf_Internal_Rela *irelend, | |
14277 | nds32_elf_blank_t *relax_blank_list, | |
14278 | asection *sec, | |
14279 | long unsigned int *off, | |
14280 | bfd_byte *contents) | |
14281 | { | |
14282 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ | |
14283 | bfd_boolean nested_ex9, nested_loop; | |
14284 | bfd_boolean ex9_loop_aware; | |
14285 | /* We use the highest 1 byte of result to record | |
14286 | how many bytes location counter has to move. */ | |
14287 | int result = 0; | |
14288 | Elf_Internal_Rela *irel_save = NULL; | |
14289 | struct elf_nds32_link_hash_table *table; | |
14290 | ||
14291 | table = nds32_elf_hash_table (info); | |
14292 | ex9_loop_aware = table->ex9_loop_aware; | |
14293 | ||
14294 | while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset) | |
14295 | { | |
14296 | switch (ELF32_R_TYPE ((*irel)->r_info)) | |
14297 | { | |
14298 | case R_NDS32_RELAX_REGION_BEGIN: | |
14299 | /* Ignore code block. */ | |
14300 | nested_ex9 = FALSE; | |
14301 | nested_loop = FALSE; | |
14302 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) | |
14303 | || (ex9_loop_aware | |
14304 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))) | |
14305 | { | |
14306 | /* Check the region if loop or not. If it is true and | |
14307 | ex9-loop-aware is true, ignore the region till region end. */ | |
14308 | /* To save the status for in .no_relax ex9 region and | |
14309 | loop region to conform the block can do ex9 relaxation. */ | |
14310 | nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG); | |
14311 | nested_loop = (ex9_loop_aware | |
14312 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)); | |
14313 | while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop)) | |
14314 | { | |
14315 | (*irel)++; | |
14316 | if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN) | |
14317 | { | |
14318 | /* There may be nested region. */ | |
14319 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) | |
14320 | nested_ex9 = TRUE; | |
14321 | else if (ex9_loop_aware | |
14322 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) | |
14323 | nested_loop = TRUE; | |
14324 | } | |
14325 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END) | |
14326 | { | |
14327 | /* The end of region. */ | |
14328 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) | |
14329 | nested_ex9 = FALSE; | |
14330 | else if (ex9_loop_aware | |
14331 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) | |
14332 | nested_loop = FALSE; | |
14333 | } | |
1c8f6a4d | 14334 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL |
35c08157 KLC |
14335 | && ((*irel)->r_addend & 0x1f) == 2) |
14336 | { | |
14337 | /* Alignment exist in the region. */ | |
14338 | result |= CLEAN_PRE; | |
14339 | if (((*irel)->r_offset - | |
14340 | get_nds32_elf_blank_total (&relax_blank_list, | |
14341 | (*irel)->r_offset, 0)) & 0x02) | |
14342 | result |= PUSH_PRE; | |
14343 | } | |
14344 | } | |
14345 | if ((*irel) >= irelend) | |
14346 | *off = sec->size; | |
14347 | else | |
14348 | *off = (*irel)->r_offset; | |
14349 | ||
14350 | /* The final instruction in the region, regard this one as data to ignore it. */ | |
14351 | result |= DATA_EXIST; | |
14352 | return result; | |
14353 | } | |
14354 | break; | |
14355 | ||
14356 | case R_NDS32_LABEL: | |
1c8f6a4d | 14357 | if (((*irel)->r_addend & 0x1f) == 2) |
35c08157 KLC |
14358 | { |
14359 | /* Check this point is align and decide to do ex9 or not. */ | |
14360 | result |= CLEAN_PRE; | |
14361 | if (((*irel)->r_offset - | |
14362 | get_nds32_elf_blank_total (&relax_blank_list, | |
14363 | (*irel)->r_offset, 0)) & 0x02) | |
14364 | result |= PUSH_PRE; | |
14365 | } | |
14366 | break; | |
14367 | case R_NDS32_32_RELA: | |
14368 | /* Data. */ | |
14369 | result |= (4 << 24); | |
14370 | result |= DATA_EXIST; | |
14371 | break; | |
14372 | case R_NDS32_16_RELA: | |
14373 | /* Data. */ | |
14374 | result |= (2 << 24); | |
14375 | result |= DATA_EXIST; | |
14376 | break; | |
14377 | case R_NDS32_DATA: | |
14378 | /* Data. */ | |
14379 | /* The least code alignment is 2. If the data is only one byte, | |
14380 | we have to shift one more byte. */ | |
14381 | if ((*irel)->r_addend == 1) | |
14382 | result |= ((*irel)->r_addend << 25) ; | |
14383 | else | |
14384 | result |= ((*irel)->r_addend << 24) ; | |
14385 | ||
14386 | result |= DATA_EXIST; | |
14387 | break; | |
14388 | ||
14389 | case R_NDS32_25_PCREL_RELA: | |
14390 | case R_NDS32_SDA16S3_RELA: | |
14391 | case R_NDS32_SDA15S3_RELA: | |
14392 | case R_NDS32_SDA15S3: | |
14393 | case R_NDS32_SDA17S2_RELA: | |
14394 | case R_NDS32_SDA15S2_RELA: | |
14395 | case R_NDS32_SDA12S2_SP_RELA: | |
14396 | case R_NDS32_SDA12S2_DP_RELA: | |
14397 | case R_NDS32_SDA15S2: | |
14398 | case R_NDS32_SDA18S1_RELA: | |
14399 | case R_NDS32_SDA15S1_RELA: | |
14400 | case R_NDS32_SDA15S1: | |
14401 | case R_NDS32_SDA19S0_RELA: | |
14402 | case R_NDS32_SDA15S0_RELA: | |
14403 | case R_NDS32_SDA15S0: | |
14404 | case R_NDS32_HI20_RELA: | |
14405 | case R_NDS32_LO12S0_ORI_RELA: | |
14406 | case R_NDS32_LO12S0_RELA: | |
14407 | case R_NDS32_LO12S1_RELA: | |
14408 | case R_NDS32_LO12S2_RELA: | |
14409 | /* These relocation is supported ex9 relaxation currently. */ | |
14410 | /* We have to save the relocation for using later, since we have | |
14411 | to check there is any alignment in the same address. */ | |
14412 | irel_save = *irel; | |
14413 | break; | |
14414 | default: | |
14415 | /* Not support relocations. */ | |
14416 | if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table) | |
1c8f6a4d KLC |
14417 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE |
14418 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16) | |
35c08157 KLC |
14419 | { |
14420 | /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here. | |
14421 | But we have to consider if there is any side-effect. */ | |
14422 | if (!(result & DATA_EXIST)) | |
14423 | { | |
14424 | /* We have to confirm there is no data relocation in the | |
14425 | same address. In general case, this won't happen. */ | |
14426 | /* We have to do ex9 conservative, for those relocation not | |
14427 | considerd we ignore instruction. */ | |
14428 | result |= DATA_EXIST; | |
14429 | if (*(contents + *off) & 0x80) | |
14430 | result |= (2 << 24); | |
14431 | else | |
14432 | result |= (4 << 24); | |
14433 | break; | |
14434 | } | |
14435 | } | |
14436 | } | |
14437 | if ((*irel) < irelend | |
14438 | && ((*irel) + 1) < irelend | |
14439 | && (*irel)->r_offset == ((*irel) + 1)->r_offset) | |
14440 | /* There are relocations pointing to the same address, we have to | |
14441 | check all of them. */ | |
14442 | (*irel)++; | |
14443 | else | |
14444 | { | |
14445 | if (irel_save) | |
14446 | *irel = irel_save; | |
14447 | return result; | |
14448 | } | |
14449 | } | |
14450 | return result; | |
14451 | } | |
14452 | ||
1c8f6a4d KLC |
14453 | /* Replace with ex9 instruction. */ |
14454 | ||
14455 | static bfd_boolean | |
14456 | nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off, | |
14457 | nds32_elf_blank_t **relax_blank_list, | |
14458 | struct elf_nds32_irel_entry *pre_irel_ptr, | |
14459 | struct elf_nds32_irel_entry **irel_list) | |
14460 | { | |
14461 | if (insn16 != 0) | |
14462 | { | |
14463 | /* Implement the ex9 relaxation. */ | |
14464 | bfd_putb16 (insn16, contents + pre_off); | |
14465 | if (!insert_nds32_elf_blank_recalc_total (relax_blank_list, | |
14466 | pre_off + 2, 2)) | |
14467 | return FALSE; | |
14468 | if (pre_irel_ptr != NULL) | |
14469 | nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr); | |
14470 | } | |
14471 | return TRUE; | |
14472 | } | |
14473 | ||
35c08157 KLC |
14474 | /* Replace input file instruction which is in ex9 itable. */ |
14475 | ||
14476 | static bfd_boolean | |
14477 | nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec) | |
14478 | { | |
14479 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; | |
14480 | bfd_byte *contents = NULL; | |
1c8f6a4d KLC |
14481 | bfd_vma off; |
14482 | uint16_t insn16, insn_ex9; | |
35c08157 | 14483 | /* `pre_*' are used to track previous instruction that can use ex9.it. */ |
1c8f6a4d KLC |
14484 | bfd_vma pre_off = -1; |
14485 | uint16_t pre_insn16 = 0; | |
35c08157 KLC |
14486 | struct elf_nds32_irel_entry *pre_irel_ptr = NULL; |
14487 | Elf_Internal_Rela *internal_relocs; | |
14488 | Elf_Internal_Rela *irel; | |
14489 | Elf_Internal_Rela *irelend; | |
14490 | Elf_Internal_Shdr *symtab_hdr; | |
14491 | Elf_Internal_Sym *isym = NULL; | |
14492 | nds32_elf_blank_t *relax_blank_list = NULL; | |
1c8f6a4d KLC |
14493 | uint32_t insn = 0; |
14494 | uint32_t insn_with_reg = 0; | |
14495 | uint32_t it_insn; | |
14496 | uint32_t it_insn_with_reg; | |
35c08157 KLC |
14497 | unsigned long r_symndx; |
14498 | asection *isec; | |
14499 | struct elf_nds32_irel_entry *irel_list = NULL; | |
14500 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); | |
14501 | int data_flag, do_replace, save_irel; | |
1c8f6a4d KLC |
14502 | struct elf_link_hash_entry_list *h_list; |
14503 | ||
35c08157 KLC |
14504 | |
14505 | /* Load section instructions, relocations, and symbol table. */ | |
14506 | if (!nds32_get_section_contents (abfd, sec, &contents) | |
14507 | || !nds32_get_local_syms (abfd, sec, &isym)) | |
14508 | return FALSE; | |
1c8f6a4d KLC |
14509 | internal_relocs = |
14510 | _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */); | |
35c08157 KLC |
14511 | irelend = internal_relocs + sec->reloc_count; |
14512 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
14513 | ||
14514 | off = 0; | |
14515 | ||
14516 | /* Check if the object enable ex9. */ | |
1c8f6a4d KLC |
14517 | irel = find_relocs_at_address (internal_relocs, internal_relocs, |
14518 | irelend, R_NDS32_RELAX_ENTRY); | |
35c08157 KLC |
14519 | |
14520 | /* Check this section trigger ex9 relaxation. */ | |
14521 | if (irel == NULL | |
14522 | || irel >= irelend | |
14523 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
14524 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
14525 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) | |
14526 | return TRUE; | |
14527 | ||
14528 | irel = internal_relocs; | |
14529 | ||
14530 | /* Check alignment and fetch proper relocation. */ | |
14531 | while (off < sec->size) | |
14532 | { | |
14533 | struct elf_link_hash_entry *h = NULL; | |
14534 | struct elf_nds32_irel_entry *irel_ptr = NULL; | |
14535 | ||
14536 | /* Syn the instruction and the relocation. */ | |
14537 | while (irel != NULL && irel < irelend && irel->r_offset < off) | |
14538 | irel++; | |
14539 | ||
14540 | data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend, | |
14541 | relax_blank_list, sec, | |
14542 | &off, contents); | |
14543 | if (data_flag & PUSH_PRE) | |
1c8f6a4d KLC |
14544 | if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, |
14545 | &relax_blank_list, pre_irel_ptr, | |
14546 | &irel_list)) | |
14547 | return FALSE; | |
35c08157 KLC |
14548 | |
14549 | if (data_flag & CLEAN_PRE) | |
14550 | { | |
14551 | pre_off = 0; | |
14552 | pre_insn16 = 0; | |
14553 | pre_irel_ptr = NULL; | |
14554 | } | |
14555 | if (data_flag & DATA_EXIST) | |
14556 | { | |
14557 | /* We save the move offset in the highest byte. */ | |
14558 | off += (data_flag >> 24); | |
14559 | continue; | |
14560 | } | |
14561 | ||
14562 | if (*(contents + off) & 0x80) | |
14563 | { | |
14564 | /* 2-byte instruction. */ | |
14565 | off += 2; | |
14566 | continue; | |
14567 | } | |
14568 | ||
14569 | /* Load the instruction and its opcode with register for comparing. */ | |
14570 | ex9_insn = ex9_insn_head; | |
14571 | insn = bfd_getb32 (contents + off); | |
14572 | insn_with_reg = 0; | |
14573 | while (ex9_insn) | |
14574 | { | |
14575 | it_insn = strtol (ex9_insn->string, NULL, 16); | |
14576 | it_insn_with_reg = 0; | |
14577 | do_replace = 0; | |
14578 | save_irel = 0; | |
14579 | ||
14580 | if (irel != NULL && irel < irelend && irel->r_offset == off) | |
14581 | { | |
14582 | /* Insn with relocation. */ | |
14583 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
14584 | ||
14585 | if (ex9_insn->irel != NULL) | |
1c8f6a4d KLC |
14586 | nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn, |
14587 | &it_insn_with_reg); | |
35c08157 KLC |
14588 | |
14589 | if (ex9_insn->irel != NULL | |
1c8f6a4d KLC |
14590 | && (ELF32_R_TYPE (irel->r_info) == |
14591 | ELF32_R_TYPE (ex9_insn->irel->r_info)) | |
35c08157 KLC |
14592 | && (insn_with_reg == it_insn_with_reg)) |
14593 | { | |
14594 | /* Insn relocation and format is the same as table entry. */ | |
14595 | ||
14596 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA | |
14597 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA | |
14598 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA | |
14599 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA | |
14600 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA | |
14601 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
14602 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
14603 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
14604 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
14605 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
14606 | && ELF32_R_TYPE (irel->r_info) <= | |
14607 | R_NDS32_SDA12S2_SP_RELA) | |
14608 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
14609 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
14610 | { | |
14611 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14612 | if (r_symndx < symtab_hdr->sh_info) | |
14613 | { | |
14614 | /* Local symbol. */ | |
14615 | int shndx = isym[r_symndx].st_shndx; | |
14616 | ||
14617 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
14618 | if (ex9_insn->sec == isec | |
14619 | && ex9_insn->irel->r_addend == irel->r_addend | |
14620 | && ex9_insn->irel->r_info == irel->r_info) | |
14621 | { | |
14622 | do_replace = 1; | |
14623 | save_irel = 1; | |
14624 | } | |
14625 | } | |
14626 | else | |
14627 | { | |
14628 | /* External symbol. */ | |
14629 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14630 | if (ex9_insn->m_list) | |
14631 | { | |
35c08157 KLC |
14632 | h_list = ex9_insn->m_list->h_list; |
14633 | while (h_list) | |
14634 | { | |
14635 | if (h == h_list->h | |
1c8f6a4d KLC |
14636 | && (ex9_insn->m_list->irel->r_addend == |
14637 | irel->r_addend)) | |
35c08157 KLC |
14638 | { |
14639 | do_replace = 1; | |
14640 | save_irel = 1; | |
14641 | break; | |
14642 | } | |
14643 | h_list = h_list->next; | |
14644 | } | |
14645 | } | |
14646 | } | |
14647 | } | |
14648 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA) | |
14649 | { | |
14650 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14651 | if (r_symndx < symtab_hdr->sh_info) | |
14652 | { | |
14653 | /* Local symbols. Compare its base symbol and offset. */ | |
14654 | int shndx = isym[r_symndx].st_shndx; | |
14655 | ||
14656 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
14657 | if (ex9_insn->sec == isec | |
14658 | && ex9_insn->irel->r_addend == irel->r_addend | |
14659 | && ex9_insn->irel->r_info == irel->r_info) | |
14660 | { | |
14661 | do_replace = 1; | |
14662 | save_irel = 1; | |
14663 | } | |
14664 | } | |
14665 | else | |
14666 | { | |
14667 | /* External symbol. */ | |
14668 | struct elf_link_hash_entry_mul_list *m_list; | |
14669 | ||
14670 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14671 | m_list = ex9_insn->m_list; | |
14672 | ||
14673 | while (m_list) | |
14674 | { | |
1c8f6a4d | 14675 | h_list = m_list->h_list; |
35c08157 KLC |
14676 | |
14677 | while (h_list) | |
14678 | { | |
14679 | if (h == h_list->h | |
1c8f6a4d KLC |
14680 | && (m_list->irel->r_addend |
14681 | == irel->r_addend)) | |
35c08157 KLC |
14682 | { |
14683 | do_replace = 1; | |
14684 | save_irel = 1; | |
14685 | if (ex9_insn->next | |
14686 | && ex9_insn->m_list | |
14687 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
14688 | { | |
14689 | /* sethi multiple entry must be fixed */ | |
14690 | nds32_elf_ex9_insert_fix (sec, irel, | |
14691 | h, ex9_insn->order); | |
14692 | } | |
14693 | break; | |
14694 | } | |
14695 | h_list = h_list->next; | |
14696 | } | |
14697 | m_list = m_list->next; | |
14698 | } | |
14699 | } | |
14700 | } | |
14701 | } | |
14702 | ||
14703 | /* Import table: Check the symbol hash table and the | |
14704 | jump target. Only R_NDS32_25_PCREL_RELA now. */ | |
14705 | else if (ex9_insn->times == -1 | |
14706 | && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) | |
14707 | { | |
14708 | nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg); | |
14709 | if (insn_with_reg == it_insn_with_reg) | |
14710 | { | |
14711 | char code[10]; | |
14712 | bfd_vma relocation; | |
14713 | ||
14714 | r_symndx = ELF32_R_SYM (irel->r_info); | |
14715 | if (r_symndx >= symtab_hdr->sh_info) | |
14716 | { | |
14717 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
14718 | if ((h->root.type == bfd_link_hash_defined | |
14719 | || h->root.type == bfd_link_hash_defweak) | |
1c8f6a4d KLC |
14720 | && h->root.u.def.section != NULL |
14721 | && h->root.u.def.section->output_section != NULL | |
35c08157 | 14722 | && h->root.u.def.section->gc_mark == 1 |
1c8f6a4d | 14723 | && bfd_is_abs_section (h->root.u.def.section) |
35c08157 KLC |
14724 | && h->root.u.def.value > sec->size) |
14725 | { | |
1c8f6a4d KLC |
14726 | relocation = h->root.u.def.value + |
14727 | h->root.u.def.section->output_section->vma + | |
14728 | h->root.u.def.section->output_offset; | |
35c08157 | 14729 | relocation += irel->r_addend; |
1c8f6a4d KLC |
14730 | insn = insn_with_reg |
14731 | | ((relocation >> 1) & 0xffffff); | |
14732 | snprintf (code, sizeof (code), "%08x", insn); | |
35c08157 KLC |
14733 | if (strcmp (code, ex9_insn->string) == 0) |
14734 | { | |
14735 | do_replace = 1; | |
14736 | save_irel = 1; | |
14737 | } | |
14738 | } | |
14739 | } | |
14740 | } | |
14741 | } | |
14742 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
1c8f6a4d KLC |
14743 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
14744 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
35c08157 KLC |
14745 | { |
14746 | /* These relocations do not have to relocate contens, so it can | |
14747 | be regard as instruction without relocation. */ | |
14748 | if (insn == it_insn && ex9_insn->irel == NULL) | |
14749 | do_replace = 1; | |
14750 | } | |
14751 | } | |
14752 | else | |
14753 | { | |
14754 | /* Instruction without relocation, we only | |
14755 | have to compare their byte code. */ | |
14756 | if (insn == it_insn && ex9_insn->irel == NULL) | |
14757 | do_replace = 1; | |
14758 | } | |
14759 | ||
14760 | /* Insntruction match so replacing the code here. */ | |
14761 | if (do_replace == 1) | |
14762 | { | |
14763 | /* There are two formats of ex9 instruction. */ | |
14764 | if (ex9_insn->order < 32) | |
14765 | insn_ex9 = INSN_EX9_IT_2; | |
14766 | else | |
14767 | insn_ex9 = INSN_EX9_IT_1; | |
14768 | insn16 = insn_ex9 | ex9_insn->order; | |
14769 | ||
1c8f6a4d KLC |
14770 | /* Insert ex9 instruction. */ |
14771 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, | |
14772 | &relax_blank_list, pre_irel_ptr, | |
14773 | &irel_list); | |
35c08157 KLC |
14774 | pre_off = off; |
14775 | pre_insn16 = insn16; | |
14776 | ||
14777 | if (save_irel) | |
14778 | { | |
14779 | /* For instuction with relocation do relax. */ | |
14780 | irel_ptr = (struct elf_nds32_irel_entry *) | |
14781 | bfd_malloc (sizeof (struct elf_nds32_irel_entry)); | |
14782 | irel_ptr->irel = irel; | |
14783 | irel_ptr->next = NULL; | |
14784 | pre_irel_ptr = irel_ptr; | |
14785 | } | |
14786 | else | |
14787 | pre_irel_ptr = NULL; | |
14788 | break; | |
14789 | } | |
14790 | ex9_insn = ex9_insn->next; | |
14791 | } | |
14792 | off += 4; | |
14793 | } | |
14794 | ||
1c8f6a4d KLC |
14795 | /* Insert ex9 instruction. */ |
14796 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, | |
14797 | &relax_blank_list, pre_irel_ptr, | |
14798 | &irel_list); | |
35c08157 KLC |
14799 | |
14800 | /* Delete the redundant code. */ | |
14801 | if (relax_blank_list) | |
14802 | { | |
14803 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); | |
14804 | relax_blank_list = NULL; | |
14805 | } | |
14806 | ||
14807 | /* Clear the relocation that is replaced by ex9. */ | |
14808 | while (irel_list) | |
14809 | { | |
14810 | struct elf_nds32_irel_entry *irel_ptr; | |
14811 | ||
14812 | irel_ptr = irel_list; | |
14813 | irel_list = irel_ptr->next; | |
14814 | irel_ptr->irel->r_info = | |
14815 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN); | |
14816 | free (irel_ptr); | |
14817 | } | |
14818 | return TRUE; | |
14819 | } | |
14820 | ||
14821 | /* Initialize ex9 hash table. */ | |
14822 | ||
14823 | int | |
14824 | nds32_elf_ex9_init (void) | |
14825 | { | |
14826 | if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc, | |
14827 | sizeof (struct elf_nds32_code_hash_entry), | |
14828 | 1023)) | |
14829 | { | |
14830 | (*_bfd_error_handler) (_("Linker: cannot init ex9 hash table error \n")); | |
14831 | return FALSE; | |
14832 | } | |
14833 | return TRUE; | |
14834 | } | |
14835 | ||
14836 | /* Predict how many bytes will be relaxed with ex9 and ifc. */ | |
14837 | ||
14838 | static void | |
14839 | nds32_elf_ex9_total_relax (struct bfd_link_info *info) | |
14840 | { | |
14841 | struct elf_nds32_insn_times_entry *ex9_insn; | |
14842 | struct elf_nds32_insn_times_entry *temp; | |
14843 | int target_optimize; | |
14844 | struct elf_nds32_link_hash_table *table; | |
14845 | ||
14846 | if (ex9_insn_head == NULL) | |
14847 | return; | |
14848 | ||
14849 | table = nds32_elf_hash_table (info); | |
14850 | target_optimize = table->target_optimize; | |
14851 | ex9_insn = ex9_insn_head; | |
14852 | while (ex9_insn) | |
14853 | { | |
14854 | ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size; | |
14855 | temp = ex9_insn; | |
14856 | ex9_insn = ex9_insn->next; | |
14857 | free (temp); | |
14858 | } | |
14859 | ex9_insn_head = NULL; | |
14860 | ||
14861 | if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON)) | |
14862 | { | |
14863 | /* Examine ifc reduce size. */ | |
14864 | struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head; | |
14865 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; | |
14866 | int size = 0; | |
14867 | ||
14868 | while (ifc_ent) | |
14869 | { | |
14870 | if (ifc_ent->enable == 0) | |
14871 | { | |
14872 | /* Not ifc yet. */ | |
14873 | irel_ptr = ifc_ent->irel_head; | |
14874 | while (irel_ptr) | |
14875 | { | |
14876 | size += 2; | |
14877 | irel_ptr = irel_ptr->next; | |
14878 | } | |
14879 | } | |
14880 | size -= 2; | |
14881 | ifc_ent = ifc_ent->next; | |
14882 | } | |
14883 | ex9_relax_size += size; | |
14884 | } | |
14885 | } | |
14886 | ||
14887 | /* Finish ex9 table. */ | |
14888 | ||
14889 | void | |
14890 | nds32_elf_ex9_finish (struct bfd_link_info *link_info) | |
14891 | { | |
35c08157 KLC |
14892 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); |
14893 | nds32_elf_order_insn_times (link_info); | |
14894 | nds32_elf_ex9_total_relax (link_info); | |
14895 | /* Traverse the hash table and count its times. */ | |
14896 | nds32_elf_code_hash_traverse (nds32_elf_count_insn_times); | |
14897 | nds32_elf_order_insn_times (link_info); | |
14898 | nds32_elf_ex9_build_itable (link_info); | |
35c08157 KLC |
14899 | } |
14900 | ||
14901 | /* Relocate the entries in ex9 table. */ | |
14902 | ||
14903 | static bfd_vma | |
14904 | nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr, | |
14905 | struct bfd_link_info *link_info) | |
14906 | { | |
14907 | Elf_Internal_Sym *isym = NULL; | |
14908 | bfd_vma relocation = -1; | |
1c8f6a4d | 14909 | struct elf_link_hash_entry *h; |
35c08157 KLC |
14910 | |
14911 | if (ptr->m_list != NULL) | |
14912 | { | |
14913 | /* Global symbol. */ | |
1c8f6a4d KLC |
14914 | h = ptr->m_list->h_list->h; |
14915 | if ((h->root.type == bfd_link_hash_defined | |
14916 | || h->root.type == bfd_link_hash_defweak) | |
14917 | && h->root.u.def.section != NULL | |
14918 | && h->root.u.def.section->output_section != NULL) | |
35c08157 KLC |
14919 | { |
14920 | ||
1c8f6a4d KLC |
14921 | relocation = h->root.u.def.value + |
14922 | h->root.u.def.section->output_section->vma + | |
14923 | h->root.u.def.section->output_offset; | |
35c08157 KLC |
14924 | relocation += ptr->m_list->irel->r_addend; |
14925 | } | |
14926 | else | |
14927 | relocation = 0; | |
14928 | } | |
14929 | else if (ptr->sec !=NULL) | |
14930 | { | |
14931 | /* Local symbol. */ | |
14932 | Elf_Internal_Sym sym; | |
14933 | asection *sec = NULL; | |
14934 | asection isec; | |
14935 | asection *isec_ptr = &isec; | |
14936 | Elf_Internal_Rela irel_backup = *(ptr->irel); | |
14937 | asection *sec_backup = ptr->sec; | |
14938 | bfd *abfd = ptr->sec->owner; | |
14939 | ||
14940 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
14941 | return FALSE; | |
14942 | isym = isym + ELF32_R_SYM (ptr->irel->r_info); | |
14943 | ||
14944 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
14945 | if (sec != NULL) | |
14946 | *isec_ptr = *sec; | |
14947 | sym = *isym; | |
14948 | ||
14949 | /* The purpose is same as elf_link_input_bfd. */ | |
14950 | if (isec_ptr != NULL | |
14951 | && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE | |
14952 | && ELF_ST_TYPE (isym->st_info) != STT_SECTION) | |
14953 | { | |
14954 | sym.st_value = | |
14955 | _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr, | |
14956 | elf_section_data (isec_ptr)->sec_info, | |
14957 | isym->st_value); | |
14958 | } | |
14959 | relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym, | |
14960 | &ptr->sec, ptr->irel); | |
14961 | if (ptr->irel != NULL) | |
14962 | relocation += ptr->irel->r_addend; | |
14963 | ||
14964 | /* Restore origin value since there may be some insntructions that | |
14965 | could not be replaced with ex9.it. */ | |
14966 | *(ptr->irel) = irel_backup; | |
14967 | ptr->sec = sec_backup; | |
14968 | } | |
14969 | ||
14970 | return relocation; | |
14971 | } | |
14972 | ||
14973 | /* Import ex9 table and build list. */ | |
14974 | ||
14975 | void | |
14976 | nds32_elf_ex9_import_table (struct bfd_link_info *info) | |
14977 | { | |
1c8f6a4d | 14978 | int num = 0; |
35c08157 KLC |
14979 | bfd_byte *contents; |
14980 | unsigned long insn; | |
14981 | FILE *ex9_import_file; | |
14982 | int update_ex9_table; | |
14983 | struct elf_nds32_link_hash_table *table; | |
14984 | ||
14985 | table = nds32_elf_hash_table (info); | |
14986 | ex9_import_file = table->ex9_import_file; | |
1c8f6a4d | 14987 | rewind (table->ex9_import_file); |
35c08157 KLC |
14988 | |
14989 | contents = bfd_malloc (sizeof (bfd_byte) * 4); | |
14990 | ||
35c08157 | 14991 | /* Read instructions from the input file and build the list. */ |
1c8f6a4d | 14992 | while (!feof (ex9_import_file)) |
35c08157 KLC |
14993 | { |
14994 | char *code; | |
14995 | struct elf_nds32_insn_times_entry *ptr; | |
14996 | size_t nread; | |
14997 | ||
14998 | nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file); | |
1c8f6a4d KLC |
14999 | /* Ignore the final byte 0x0a. */ |
15000 | if (nread < 1) | |
15001 | break; | |
35c08157 KLC |
15002 | insn = bfd_getb32 (contents); |
15003 | code = bfd_malloc (sizeof (char) * 9); | |
15004 | snprintf (code, 9, "%08lx", insn); | |
15005 | ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); | |
15006 | ptr->string = code; | |
15007 | ptr->order = num; | |
15008 | ptr->times = -1; | |
15009 | ptr->sec = NULL; | |
15010 | ptr->m_list = NULL; | |
15011 | ptr->rel_backup.r_offset = 0; | |
15012 | ptr->rel_backup.r_info = 0; | |
15013 | ptr->rel_backup.r_addend = 0; | |
15014 | ptr->irel = NULL; | |
15015 | ptr->next = NULL; | |
15016 | nds32_elf_ex9_insert_entry (ptr); | |
35c08157 KLC |
15017 | num++; |
15018 | } | |
15019 | ||
15020 | update_ex9_table = table->update_ex9_table; | |
15021 | if (update_ex9_table == 1) | |
15022 | { | |
15023 | /* It has to consider of sethi need to use multiple page | |
15024 | but it not be done yet. */ | |
15025 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); | |
15026 | nds32_elf_order_insn_times (info); | |
15027 | } | |
15028 | } | |
15029 | ||
15030 | /* Export ex9 table. */ | |
15031 | ||
15032 | static void | |
15033 | nds32_elf_ex9_export (struct bfd_link_info *info, | |
15034 | bfd_byte *contents, int size) | |
15035 | { | |
15036 | FILE *ex9_export_file; | |
15037 | struct elf_nds32_link_hash_table *table; | |
15038 | ||
15039 | table = nds32_elf_hash_table (info); | |
15040 | ex9_export_file = table->ex9_export_file; | |
15041 | fwrite (contents, sizeof (bfd_byte), size, ex9_export_file); | |
15042 | fclose (ex9_export_file); | |
15043 | } | |
15044 | ||
15045 | /* Adjust relocations of J and JAL in ex9.itable. | |
15046 | Export ex9 table. */ | |
15047 | ||
1c8f6a4d | 15048 | static void |
35c08157 KLC |
15049 | nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info) |
15050 | { | |
15051 | asection *table_sec = NULL; | |
15052 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; | |
15053 | struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2; | |
15054 | bfd *it_abfd; | |
1c8f6a4d | 15055 | uint32_t insn, insn_with_reg, source_insn; |
35c08157 KLC |
15056 | bfd_byte *contents = NULL, *source_contents = NULL; |
15057 | int size = 0; | |
15058 | bfd_vma gp; | |
15059 | int shift, update_ex9_table, offset = 0; | |
15060 | reloc_howto_type *howto = NULL; | |
15061 | Elf_Internal_Rela rel_backup; | |
15062 | unsigned short insn_ex9; | |
15063 | struct elf_nds32_link_hash_table *table; | |
1c8f6a4d KLC |
15064 | FILE *ex9_export_file; |
15065 | static bfd_boolean done = FALSE; | |
15066 | ||
15067 | if (done) | |
15068 | return; | |
15069 | ||
15070 | done = TRUE; | |
35c08157 KLC |
15071 | |
15072 | table = nds32_elf_hash_table (link_info); | |
15073 | if (table) | |
15074 | table->relax_status |= NDS32_RELAX_EX9_DONE; | |
15075 | ||
15076 | ||
15077 | update_ex9_table = table->update_ex9_table; | |
15078 | /* Generated ex9.itable exactly. */ | |
15079 | if (update_ex9_table == 0) | |
15080 | { | |
15081 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; | |
c72f2fb2 | 15082 | it_abfd = it_abfd->link.next) |
35c08157 KLC |
15083 | { |
15084 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); | |
15085 | if (table_sec != NULL) | |
15086 | break; | |
15087 | } | |
15088 | ||
15089 | if (table_sec != NULL) | |
15090 | { | |
15091 | bfd *output_bfd; | |
35c08157 KLC |
15092 | |
15093 | output_bfd = table_sec->output_section->owner; | |
15094 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15095 | if (table_sec->size == 0) | |
15096 | return; | |
15097 | ||
15098 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents)) | |
15099 | return; | |
35c08157 KLC |
15100 | } |
15101 | } | |
15102 | else | |
15103 | { | |
15104 | /* Set gp. */ | |
15105 | bfd *output_bfd; | |
15106 | ||
15107 | output_bfd = link_info->input_bfds->sections->output_section->owner; | |
15108 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15109 | contents = bfd_malloc (sizeof (bfd_byte) * 2048); | |
15110 | } | |
15111 | ||
15112 | /* Relocate instruction. */ | |
15113 | while (ex9_insn) | |
15114 | { | |
15115 | bfd_vma relocation, min_relocation = 0xffffffff; | |
15116 | ||
15117 | insn = strtol (ex9_insn->string, NULL, 16); | |
15118 | insn_with_reg = 0; | |
15119 | if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL) | |
15120 | { | |
15121 | if (ex9_insn->m_list) | |
15122 | rel_backup = ex9_insn->m_list->rel_backup; | |
15123 | else | |
15124 | rel_backup = ex9_insn->rel_backup; | |
15125 | ||
15126 | nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg); | |
15127 | howto = | |
15128 | bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE | |
15129 | (rel_backup.r_info)); | |
15130 | shift = howto->rightshift; | |
15131 | if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA | |
15132 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA | |
15133 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA | |
15134 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA | |
15135 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA) | |
15136 | { | |
15137 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15138 | insn = | |
15139 | insn_with_reg | ((relocation >> shift) & | |
15140 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15141 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15142 | } |
15143 | else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3 | |
15144 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0) | |
15145 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA | |
15146 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA) | |
15147 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15148 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15149 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA | |
15150 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA)) | |
15151 | { | |
15152 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15153 | insn = | |
15154 | insn_with_reg | (((relocation - gp) >> shift) & | |
15155 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15156 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15157 | } |
15158 | else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA) | |
15159 | { | |
15160 | /* Sethi may be multiple entry for one insn. */ | |
1c8f6a4d KLC |
15161 | if (ex9_insn->next && ex9_insn->m_list |
15162 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
35c08157 KLC |
15163 | { |
15164 | struct elf_link_hash_entry_mul_list *m_list; | |
15165 | struct elf_nds32_ex9_refix *fix_ptr; | |
1c8f6a4d | 15166 | struct elf_link_hash_entry *h; |
35c08157 KLC |
15167 | |
15168 | temp_ptr = ex9_insn; | |
15169 | temp_ptr2 = ex9_insn; | |
15170 | m_list = ex9_insn->m_list; | |
15171 | while (m_list) | |
15172 | { | |
1c8f6a4d KLC |
15173 | h = m_list->h_list->h; |
15174 | relocation = h->root.u.def.value + | |
15175 | h->root.u.def.section->output_section->vma + | |
15176 | h->root.u.def.section->output_offset; | |
35c08157 KLC |
15177 | relocation += m_list->irel->r_addend; |
15178 | ||
15179 | if (relocation < min_relocation) | |
15180 | min_relocation = relocation; | |
15181 | m_list = m_list->next; | |
15182 | } | |
15183 | relocation = min_relocation; | |
15184 | ||
15185 | /* Put insntruction into ex9 table. */ | |
15186 | insn = insn_with_reg | |
15187 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15188 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15189 | relocation = relocation + 0x1000; /* hi20 */ |
15190 | ||
1c8f6a4d KLC |
15191 | while (ex9_insn->next && ex9_insn->m_list |
15192 | && ex9_insn->m_list == ex9_insn->next->m_list) | |
35c08157 KLC |
15193 | { |
15194 | /* Multiple sethi. */ | |
15195 | ex9_insn = ex9_insn->next; | |
15196 | size += 4; | |
35c08157 KLC |
15197 | insn = |
15198 | insn_with_reg | ((relocation >> shift) & | |
15199 | nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15200 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15201 | relocation = relocation + 0x1000; /* hi20 */ |
15202 | } | |
15203 | ||
15204 | fix_ptr = ex9_refix_head; | |
15205 | while (fix_ptr) | |
15206 | { | |
15207 | /* Fix ex9 insn. */ | |
15208 | /* temp_ptr2 points to the head of multiple sethi. */ | |
15209 | temp_ptr = temp_ptr2; | |
15210 | while (fix_ptr->order != temp_ptr->order && fix_ptr->next) | |
15211 | { | |
15212 | fix_ptr = fix_ptr->next; | |
15213 | } | |
15214 | if (fix_ptr->order != temp_ptr->order) | |
15215 | break; | |
15216 | ||
15217 | /* Set source insn. */ | |
1c8f6a4d KLC |
15218 | relocation = |
15219 | fix_ptr->h->root.u.def.value + | |
15220 | fix_ptr->h->root.u.def.section->output_section->vma + | |
15221 | fix_ptr->h->root.u.def.section->output_offset; | |
35c08157 KLC |
15222 | relocation += fix_ptr->irel->r_addend; |
15223 | /* sethi imm is imm20s. */ | |
15224 | source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff); | |
15225 | ||
15226 | while (temp_ptr) | |
15227 | { | |
35c08157 KLC |
15228 | /* Match entry and source code. */ |
15229 | insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset); | |
15230 | if (insn == source_insn) | |
15231 | { | |
15232 | /* Fix the ex9 insn. */ | |
15233 | if (temp_ptr->order != fix_ptr->order) | |
15234 | { | |
15235 | if (!nds32_get_section_contents | |
15236 | (fix_ptr->sec->owner, fix_ptr->sec, | |
15237 | &source_contents)) | |
15238 | (*_bfd_error_handler) | |
15239 | (_("Linker: error cannot fixed ex9 relocation \n")); | |
15240 | if (temp_ptr->order < 32) | |
15241 | insn_ex9 = INSN_EX9_IT_2; | |
15242 | else | |
15243 | insn_ex9 = INSN_EX9_IT_1; | |
15244 | insn_ex9 = insn_ex9 | temp_ptr->order; | |
15245 | bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset); | |
15246 | } | |
15247 | break; | |
15248 | } | |
15249 | else | |
15250 | { | |
15251 | if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list) | |
15252 | (*_bfd_error_handler) | |
15253 | (_("Linker: error cannot fixed ex9 relocation \n")); | |
15254 | else | |
15255 | temp_ptr = temp_ptr->next; | |
15256 | } | |
15257 | } | |
15258 | fix_ptr = fix_ptr->next; | |
15259 | } | |
15260 | } | |
15261 | else | |
15262 | { | |
15263 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); | |
15264 | insn = insn_with_reg | |
15265 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); | |
1c8f6a4d | 15266 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
35c08157 KLC |
15267 | } |
15268 | } | |
15269 | } | |
15270 | else | |
15271 | { | |
15272 | /* Insn without relocation does not have to be fixed | |
15273 | if need to update export table. */ | |
15274 | if (update_ex9_table == 1) | |
15275 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); | |
15276 | } | |
15277 | ex9_insn = ex9_insn->next; | |
15278 | size += 4; | |
15279 | } | |
15280 | ||
15281 | ex9_export_file = table->ex9_export_file; | |
15282 | if (ex9_export_file != NULL) | |
1c8f6a4d | 15283 | nds32_elf_ex9_export (link_info, contents, table_sec->size); |
35c08157 KLC |
15284 | else if (update_ex9_table == 1) |
15285 | { | |
1c8f6a4d KLC |
15286 | table->ex9_export_file = table->ex9_import_file; |
15287 | rewind (table->ex9_export_file); | |
15288 | nds32_elf_ex9_export (link_info, contents, size); | |
35c08157 KLC |
15289 | } |
15290 | } | |
15291 | ||
15292 | /* Generate ex9 hash table. */ | |
15293 | ||
15294 | static bfd_boolean | |
15295 | nds32_elf_ex9_build_hash_table (bfd * abfd, asection * sec, | |
15296 | struct bfd_link_info *link_info) | |
15297 | { | |
15298 | Elf_Internal_Rela *internal_relocs; | |
15299 | Elf_Internal_Rela *irelend; | |
15300 | Elf_Internal_Rela *irel; | |
15301 | Elf_Internal_Rela *jrel; | |
15302 | Elf_Internal_Rela rel_backup; | |
15303 | Elf_Internal_Shdr *symtab_hdr; | |
15304 | Elf_Internal_Sym *isym = NULL; | |
15305 | asection *isec; | |
15306 | struct elf_link_hash_entry **sym_hashes; | |
15307 | bfd_byte *contents = NULL; | |
15308 | long unsigned int off = 0; | |
15309 | unsigned long r_symndx; | |
1c8f6a4d | 15310 | uint32_t insn, insn_with_reg; |
35c08157 KLC |
15311 | struct elf_link_hash_entry *h; |
15312 | int data_flag, shift, align; | |
15313 | bfd_vma relocation; | |
15314 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ | |
15315 | reloc_howto_type *howto = NULL; | |
15316 | ||
15317 | sym_hashes = elf_sym_hashes (abfd); | |
15318 | /* Load section instructions, relocations, and symbol table. */ | |
15319 | if (!nds32_get_section_contents (abfd, sec, &contents)) | |
15320 | return FALSE; | |
15321 | ||
15322 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, | |
15323 | TRUE /* keep_memory */); | |
15324 | irelend = internal_relocs + sec->reloc_count; | |
15325 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
15326 | if (!nds32_get_local_syms (abfd, sec, &isym)) | |
15327 | return FALSE; | |
15328 | ||
15329 | /* Check the object if enable ex9. */ | |
15330 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, | |
15331 | R_NDS32_RELAX_ENTRY); | |
15332 | ||
15333 | /* Check this section trigger ex9 relaxation. */ | |
15334 | if (irel == NULL | |
15335 | || irel >= irelend | |
15336 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY | |
15337 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY | |
15338 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) | |
15339 | return TRUE; | |
15340 | ||
15341 | irel = internal_relocs; | |
15342 | ||
15343 | /* Push each insn into hash table. */ | |
15344 | while (off < sec->size) | |
15345 | { | |
15346 | char code[10]; | |
15347 | struct elf_nds32_code_hash_entry *entry; | |
15348 | ||
15349 | while (irel != NULL && irel < irelend && irel->r_offset < off) | |
15350 | irel++; | |
15351 | ||
1c8f6a4d KLC |
15352 | data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend, |
15353 | NULL, sec, &off, contents); | |
35c08157 KLC |
15354 | if (data_flag & DATA_EXIST) |
15355 | { | |
15356 | /* We save the move offset in the highest byte. */ | |
15357 | off += (data_flag >> 24); | |
15358 | continue; | |
15359 | } | |
15360 | ||
15361 | if (*(contents + off) & 0x80) | |
15362 | { | |
15363 | off += 2; | |
15364 | } | |
15365 | else | |
15366 | { | |
15367 | h = NULL; | |
15368 | isec = NULL; | |
15369 | jrel = NULL; | |
15370 | rel_backup.r_info = 0; | |
15371 | rel_backup.r_offset = 0; | |
15372 | rel_backup.r_addend = 0; | |
15373 | /* Load the instruction and its opcode with register for comparing. */ | |
15374 | insn = bfd_getb32 (contents + off); | |
15375 | insn_with_reg = 0; | |
15376 | if (irel != NULL && irel < irelend && irel->r_offset == off) | |
15377 | { | |
15378 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); | |
15379 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); | |
15380 | shift = howto->rightshift; | |
15381 | align = (1 << shift) - 1; | |
15382 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA | |
15383 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA | |
15384 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA | |
15385 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA | |
15386 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA | |
15387 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA | |
15388 | ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
15389 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
15390 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
15391 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
15392 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15393 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15394 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
15395 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
15396 | { | |
15397 | r_symndx = ELF32_R_SYM (irel->r_info); | |
15398 | jrel = irel; | |
15399 | rel_backup = *irel; | |
15400 | if (r_symndx < symtab_hdr->sh_info) | |
15401 | { | |
15402 | /* Local symbol. */ | |
15403 | int shndx = isym[r_symndx].st_shndx; | |
15404 | ||
15405 | bfd_vma st_value = (isym + r_symndx)->st_value; | |
15406 | isec = elf_elfsections (abfd)[shndx]->bfd_section; | |
15407 | relocation = (isec->output_section->vma + isec->output_offset | |
15408 | + st_value + irel->r_addend); | |
15409 | } | |
15410 | else | |
15411 | { | |
15412 | /* External symbol. */ | |
15413 | bfd_boolean warned ATTRIBUTE_UNUSED; | |
15414 | bfd_boolean ignored ATTRIBUTE_UNUSED; | |
15415 | bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED; | |
15416 | asection *sym_sec; | |
15417 | ||
15418 | /* Maybe there is a better way to get h and relocation */ | |
15419 | RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel, | |
15420 | r_symndx, symtab_hdr, sym_hashes, | |
15421 | h, sym_sec, relocation, | |
15422 | unresolved_reloc, warned, ignored); | |
15423 | relocation += irel->r_addend; | |
1c8f6a4d KLC |
15424 | if ((h->root.type != bfd_link_hash_defined |
15425 | && h->root.type != bfd_link_hash_defweak) | |
15426 | || strcmp (h->root.root.string, "_FP_BASE_") == 0) | |
35c08157 KLC |
15427 | { |
15428 | off += 4; | |
15429 | continue; | |
15430 | } | |
15431 | } | |
15432 | ||
15433 | /* Check for gp relative instruction alignment. */ | |
15434 | if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 | |
15435 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) | |
15436 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA | |
15437 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) | |
15438 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA | |
15439 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) | |
15440 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA | |
15441 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) | |
15442 | { | |
15443 | bfd_vma gp; | |
15444 | bfd *output_bfd = sec->output_section->owner; | |
15445 | bfd_reloc_status_type r; | |
15446 | ||
15447 | /* If the symbol is in the abs section, the out_bfd will be null. | |
15448 | This happens when the relocation has a symbol@GOTOFF. */ | |
15449 | r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); | |
15450 | if (r != bfd_reloc_ok) | |
15451 | { | |
15452 | off += 4; | |
15453 | continue; | |
15454 | } | |
15455 | ||
15456 | relocation -= gp; | |
15457 | ||
15458 | /* Make sure alignment is correct. */ | |
15459 | if (relocation & align) | |
15460 | { | |
15461 | /* Incorrect alignment. */ | |
15462 | (*_bfd_error_handler) | |
15463 | (_("%s: warning: unaligned small data access. " | |
15464 | "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."), | |
15465 | bfd_get_filename (abfd), irel->r_offset, | |
15466 | irel->r_info, irel->r_addend, relocation, align); | |
15467 | off += 4; | |
15468 | continue; | |
15469 | } | |
15470 | } | |
15471 | ||
15472 | insn = insn_with_reg | |
15473 | | ((relocation >> shift) & nds32_elf_irel_mask (irel)); | |
15474 | } | |
15475 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN | |
1c8f6a4d KLC |
15476 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
15477 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) | |
35c08157 KLC |
15478 | { |
15479 | /* These relocations do not have to relocate contens, so it can | |
15480 | be regard as instruction without relocation. */ | |
15481 | } | |
15482 | else | |
15483 | { | |
15484 | off += 4; | |
15485 | continue; | |
15486 | } | |
15487 | } | |
15488 | ||
1c8f6a4d | 15489 | snprintf (code, sizeof (code), "%08x", insn); |
35c08157 KLC |
15490 | /* Copy "code". */ |
15491 | entry = (struct elf_nds32_code_hash_entry*) | |
15492 | bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE); | |
15493 | if (entry == NULL) | |
15494 | { | |
15495 | (*_bfd_error_handler) | |
15496 | (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code); | |
15497 | return FALSE; | |
15498 | } | |
15499 | if (h) | |
15500 | { | |
15501 | if (h->root.type == bfd_link_hash_undefined) | |
15502 | return TRUE; | |
15503 | /* Global symbol. */ | |
15504 | /* In order to do sethi with different symbol but same value. */ | |
15505 | if (entry->m_list == NULL) | |
15506 | { | |
15507 | struct elf_link_hash_entry_mul_list *m_list_new; | |
15508 | struct elf_link_hash_entry_list *h_list_new; | |
15509 | ||
15510 | m_list_new = (struct elf_link_hash_entry_mul_list *) | |
15511 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); | |
15512 | h_list_new = (struct elf_link_hash_entry_list *) | |
15513 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15514 | entry->m_list = m_list_new; | |
15515 | m_list_new->h_list = h_list_new; | |
15516 | m_list_new->rel_backup = rel_backup; | |
15517 | m_list_new->times = 1; | |
15518 | m_list_new->irel = jrel; | |
15519 | m_list_new->next = NULL; | |
15520 | h_list_new->h = h; | |
15521 | h_list_new->next = NULL; | |
15522 | } | |
15523 | else | |
15524 | { | |
15525 | struct elf_link_hash_entry_mul_list *m_list = entry->m_list; | |
15526 | struct elf_link_hash_entry_list *h_list; | |
15527 | ||
15528 | while (m_list) | |
15529 | { | |
15530 | /* Build the different symbols that point to the same address. */ | |
15531 | h_list = m_list->h_list; | |
15532 | if (h_list->h->root.u.def.value == h->root.u.def.value | |
15533 | && h_list->h->root.u.def.section->output_section->vma | |
15534 | == h->root.u.def.section->output_section->vma | |
15535 | && h_list->h->root.u.def.section->output_offset | |
15536 | == h->root.u.def.section->output_offset | |
15537 | && m_list->rel_backup.r_addend == rel_backup.r_addend) | |
15538 | { | |
15539 | m_list->times++; | |
15540 | m_list->irel = jrel; | |
15541 | while (h_list->h != h && h_list->next) | |
15542 | h_list = h_list->next; | |
15543 | if (h_list->h != h) | |
15544 | { | |
15545 | struct elf_link_hash_entry_list *h_list_new; | |
15546 | ||
15547 | h_list_new = (struct elf_link_hash_entry_list *) | |
15548 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15549 | h_list->next = h_list_new; | |
15550 | h_list_new->h = h; | |
15551 | h_list_new->next = NULL; | |
15552 | } | |
15553 | break; | |
15554 | } | |
15555 | /* The sethi case may have different address but the | |
15556 | hi20 is the same. */ | |
15557 | else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA | |
15558 | && m_list->next == NULL) | |
15559 | { | |
15560 | struct elf_link_hash_entry_mul_list *m_list_new; | |
15561 | struct elf_link_hash_entry_list *h_list_new; | |
15562 | ||
15563 | m_list_new = (struct elf_link_hash_entry_mul_list *) | |
15564 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); | |
15565 | h_list_new = (struct elf_link_hash_entry_list *) | |
15566 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); | |
15567 | m_list->next = m_list_new; | |
15568 | m_list_new->h_list = h_list_new; | |
15569 | m_list_new->rel_backup = rel_backup; | |
15570 | m_list_new->times = 1; | |
15571 | m_list_new->irel = jrel; | |
15572 | m_list_new->next = NULL; | |
15573 | h_list_new->h = h; | |
15574 | h_list_new->next = NULL; | |
15575 | break; | |
15576 | } | |
15577 | m_list = m_list->next; | |
15578 | } | |
15579 | if (!m_list) | |
15580 | { | |
15581 | off += 4; | |
15582 | continue; | |
15583 | } | |
15584 | } | |
15585 | } | |
15586 | else | |
15587 | { | |
15588 | /* Local symbol and insn without relocation*/ | |
15589 | entry->times++; | |
15590 | entry->rel_backup = rel_backup; | |
15591 | } | |
15592 | ||
15593 | /* Use in sethi insn with constant and global symbol in same format. */ | |
15594 | if (!jrel) | |
15595 | entry->const_insn = 1; | |
15596 | else | |
15597 | entry->irel = jrel; | |
15598 | entry->sec = isec; | |
15599 | off += 4; | |
15600 | } | |
15601 | } | |
15602 | return TRUE; | |
15603 | } | |
15604 | ||
15605 | /* Set the _ITB_BASE, and point it to ex9 table. */ | |
15606 | ||
15607 | bfd_boolean | |
15608 | nds32_elf_ex9_itb_base (struct bfd_link_info *link_info) | |
15609 | { | |
15610 | bfd *abfd; | |
15611 | asection *sec; | |
15612 | bfd *output_bfd = NULL; | |
15613 | struct bfd_link_hash_entry *bh = NULL; | |
35c08157 KLC |
15614 | |
15615 | if (is_ITB_BASE_set == 1) | |
15616 | return TRUE; | |
15617 | ||
15618 | is_ITB_BASE_set = 1; | |
15619 | ||
1c8f6a4d KLC |
15620 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE); |
15621 | ||
15622 | if (bh && (bh->type == bfd_link_hash_defined | |
15623 | || bh->type == bfd_link_hash_defweak)) | |
15624 | return TRUE; | |
35c08157 KLC |
15625 | |
15626 | for (abfd = link_info->input_bfds; abfd != NULL; | |
c72f2fb2 | 15627 | abfd = abfd->link.next) |
35c08157 KLC |
15628 | { |
15629 | sec = bfd_get_section_by_name (abfd, ".ex9.itable"); | |
15630 | if (sec != NULL) | |
15631 | { | |
15632 | output_bfd = sec->output_section->owner; | |
15633 | break; | |
15634 | } | |
15635 | } | |
15636 | if (output_bfd == NULL) | |
15637 | { | |
15638 | output_bfd = link_info->output_bfd; | |
15639 | if (output_bfd->sections == NULL) | |
15640 | return TRUE; | |
15641 | else | |
15642 | sec = bfd_abs_section_ptr; | |
15643 | } | |
15644 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", | |
15645 | FALSE, FALSE, TRUE); | |
15646 | return (_bfd_generic_link_add_one_symbol | |
15647 | (link_info, output_bfd, "_ITB_BASE_", | |
1c8f6a4d | 15648 | BSF_GLOBAL | BSF_WEAK, sec, 0, |
35c08157 KLC |
15649 | (const char *) NULL, FALSE, get_elf_backend_data |
15650 | (output_bfd)->collect, &bh)); | |
15651 | } /* End EX9.IT */ | |
15652 | \f | |
15653 | ||
15654 | #define ELF_ARCH bfd_arch_nds32 | |
15655 | #define ELF_MACHINE_CODE EM_NDS32 | |
15656 | #define ELF_MAXPAGESIZE 0x1000 | |
1c8f6a4d | 15657 | #define ELF_TARGET_ID NDS32_ELF_DATA |
35c08157 | 15658 | |
6d00b590 | 15659 | #define TARGET_BIG_SYM nds32_elf32_be_vec |
35c08157 | 15660 | #define TARGET_BIG_NAME "elf32-nds32be" |
6d00b590 | 15661 | #define TARGET_LITTLE_SYM nds32_elf32_le_vec |
35c08157 KLC |
15662 | #define TARGET_LITTLE_NAME "elf32-nds32le" |
15663 | ||
15664 | #define elf_info_to_howto nds32_info_to_howto | |
15665 | #define elf_info_to_howto_rel nds32_info_to_howto_rel | |
15666 | ||
15667 | #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create | |
15668 | #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data | |
15669 | #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data | |
15670 | #define bfd_elf32_bfd_relax_section nds32_elf_relax_section | |
15671 | #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags | |
15672 | ||
1c8f6a4d | 15673 | #define bfd_elf32_mkobject nds32_elf_mkobject |
35c08157 KLC |
15674 | #define elf_backend_action_discarded nds32_elf_action_discarded |
15675 | #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook | |
15676 | #define elf_backend_check_relocs nds32_elf_check_relocs | |
15677 | #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol | |
15678 | #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections | |
15679 | #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections | |
15680 | #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol | |
15681 | #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections | |
15682 | #define elf_backend_relocate_section nds32_elf_relocate_section | |
15683 | #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook | |
15684 | #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook | |
15685 | #define elf_backend_grok_prstatus nds32_elf_grok_prstatus | |
15686 | #define elf_backend_grok_psinfo nds32_elf_grok_psinfo | |
15687 | #define elf_backend_reloc_type_class nds32_elf_reloc_type_class | |
15688 | #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol | |
15689 | #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook | |
15690 | #define elf_backend_output_arch_syms nds32_elf_output_arch_syms | |
15691 | #define elf_backend_object_p nds32_elf_object_p | |
15692 | #define elf_backend_final_write_processing nds32_elf_final_write_processing | |
15693 | #define elf_backend_special_sections nds32_elf_special_sections | |
1c8f6a4d KLC |
15694 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
15695 | nds32_elf_get_relocated_section_contents | |
35c08157 KLC |
15696 | |
15697 | #define elf_backend_can_gc_sections 1 | |
15698 | #define elf_backend_can_refcount 1 | |
15699 | #define elf_backend_want_got_plt 1 | |
15700 | #define elf_backend_plt_readonly 1 | |
15701 | #define elf_backend_want_plt_sym 0 | |
15702 | #define elf_backend_got_header_size 12 | |
15703 | #define elf_backend_may_use_rel_p 1 | |
15704 | #define elf_backend_default_use_rela_p 1 | |
15705 | #define elf_backend_may_use_rela_p 1 | |
15706 | ||
15707 | #include "elf32-target.h" | |
15708 | ||
15709 | #undef ELF_MAXPAGESIZE | |
15710 | #define ELF_MAXPAGESIZE 0x2000 | |
15711 | ||
15712 | #undef TARGET_BIG_SYM | |
6d00b590 | 15713 | #define TARGET_BIG_SYM nds32_elf32_linux_be_vec |
35c08157 KLC |
15714 | #undef TARGET_BIG_NAME |
15715 | #define TARGET_BIG_NAME "elf32-nds32be-linux" | |
15716 | #undef TARGET_LITTLE_SYM | |
6d00b590 | 15717 | #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec |
35c08157 KLC |
15718 | #undef TARGET_LITTLE_NAME |
15719 | #define TARGET_LITTLE_NAME "elf32-nds32le-linux" | |
15720 | #undef elf32_bed | |
15721 | #define elf32_bed elf32_nds32_lin_bed | |
15722 | ||
15723 | #include "elf32-target.h" |