1 /* NDS32-specific support for 32-bit ELF.
2 Copyright (C) 2012-2018 Free Software Foundation, Inc.
3 Contributed by Andes Technology Corporation.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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
25 #include "bfd_stdint.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"
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 **);
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
);
60 /* Nds32 helper functions. */
61 static bfd_vma calculate_memory_address
62 (bfd
*, Elf_Internal_Rela
*, Elf_Internal_Sym
*, Elf_Internal_Shdr
*);
63 static int nds32_get_section_contents (bfd
*, asection
*,
64 bfd_byte
**, bfd_boolean
);
65 static bfd_boolean nds32_elf_ex9_build_hash_table
66 (bfd
*, asection
*, struct bfd_link_info
*);
67 static bfd_boolean
nds32_elf_ex9_itb_base (struct bfd_link_info
*);
68 static void nds32_elf_ex9_import_table (struct bfd_link_info
*);
69 static void nds32_elf_ex9_finish (struct bfd_link_info
*);
70 static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info
*);
71 static void nds32_elf_get_insn_with_reg
72 (Elf_Internal_Rela
*, uint32_t, uint32_t *);
73 static int nds32_get_local_syms (bfd
*, asection
*ATTRIBUTE_UNUSED
,
75 static bfd_boolean nds32_elf_ex9_replace_instruction
76 (struct bfd_link_info
*, bfd
*, asection
*);
77 static bfd_boolean
nds32_elf_ifc_calc (struct bfd_link_info
*, bfd
*,
79 static bfd_boolean
nds32_elf_ifc_finish (struct bfd_link_info
*);
80 static bfd_boolean
nds32_elf_ifc_replace (struct bfd_link_info
*);
81 static bfd_boolean
nds32_elf_ifc_reloc (void);
82 static bfd_boolean nds32_relax_fp_as_gp
83 (struct bfd_link_info
*link_info
, bfd
*abfd
, asection
*sec
,
84 Elf_Internal_Rela
*internal_relocs
, Elf_Internal_Rela
*irelend
,
85 Elf_Internal_Sym
*isymbuf
);
86 static bfd_boolean nds32_fag_remove_unused_fpbase
87 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*internal_relocs
,
88 Elf_Internal_Rela
*irelend
);
92 MACH_V1
= bfd_mach_n1h
,
93 MACH_V2
= bfd_mach_n1h_v2
,
94 MACH_V3
= bfd_mach_n1h_v3
,
95 MACH_V3M
= bfd_mach_n1h_v3m
98 #define MIN(a, b) ((a) > (b) ? (b) : (a))
99 #define MAX(a, b) ((a) > (b) ? (a) : (b))
101 /* The name of the dynamic interpreter. This is put in the .interp
103 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
105 /* The nop opcode we use. */
106 #define NDS32_NOP32 0x40000009
107 #define NDS32_NOP16 0x9200
109 /* The size in bytes of an entry in the procedure linkage table. */
110 #define PLT_ENTRY_SIZE 24
111 #define PLT_HEADER_SIZE 24
113 /* The first entry in a procedure linkage table are reserved,
114 and the initial contents are unimportant (we zero them out).
115 Subsequent entries look like this. */
116 #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */
117 #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */
118 #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */
119 #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */
120 #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */
122 /* $ta is change to $r15 (from $r25). */
123 #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */
124 #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */
125 #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */
126 #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */
127 #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */
128 #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */
130 #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */
131 #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */
132 #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */
133 #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */
134 #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */
136 #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */
137 #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */
138 #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */
139 #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */
140 #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */
141 #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */
143 /* These are macros used to get the relocation accurate value. */
144 #define ACCURATE_8BIT_S1 (0x100)
145 #define ACCURATE_U9BIT_S1 (0x400)
146 #define ACCURATE_12BIT_S1 (0x2000)
147 #define ACCURATE_14BIT_S1 (0x4000)
148 #define ACCURATE_19BIT (0x40000)
150 /* These are macros used to get the relocation conservative value. */
151 #define CONSERVATIVE_8BIT_S1 (0x100 - 4)
152 #define CONSERVATIVE_14BIT_S1 (0x4000 - 4)
153 #define CONSERVATIVE_16BIT_S1 (0x10000 - 4)
154 #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4)
155 /* These must be more conservative because the address may be in
156 different segment. */
157 #define CONSERVATIVE_15BIT (0x4000 - 0x1000)
158 #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000)
159 #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000)
160 #define CONSERVATIVE_19BIT (0x40000 - 0x1000)
161 #define CONSERVATIVE_20BIT (0x80000 - 0x1000)
163 /* Size of small data/bss sections, used to calculate SDA_BASE. */
164 static long got_size
= 0;
165 static int is_SDA_BASE_set
= 0;
166 static int is_ITB_BASE_set
= 0;
168 /* Convert ELF-VER in eflags to string for debugging purpose. */
169 static const char *const nds32_elfver_strtab
[] =
176 /* The nds32 linker needs to keep track of the number of relocs that it
177 decides to copy in check_relocs for each symbol. This is so that
178 it can discard PC relative relocs if it doesn't need them when
179 linking with -Bsymbolic. We store the information in a field
180 extending the regular ELF linker hash table. */
182 /* This structure keeps track of the number of PC relative relocs we
183 have copied for a given symbol. */
185 struct elf_nds32_pcrel_relocs_copied
188 struct elf_nds32_pcrel_relocs_copied
*next
;
189 /* A section in dynobj. */
191 /* Number of relocs copied in this section. */
195 /* Nds32 ELF linker hash entry. */
197 struct elf_nds32_link_hash_entry
199 struct elf_link_hash_entry root
;
201 /* Track dynamic relocs copied for this symbol. */
202 struct elf_dyn_relocs
*dyn_relocs
;
204 /* For checking relocation type. */
205 #define GOT_UNKNOWN 0
208 unsigned int tls_type
;
211 /* Get the nds32 ELF linker hash table from a link_info structure. */
213 #define FP_BASE_NAME "_FP_BASE_"
214 static int check_start_export_sym
= 0;
215 static size_t ex9_relax_size
= 0; /* Save ex9 predicted reducing size. */
217 /* The offset for executable tls relaxation. */
218 #define TP_OFFSET 0x0
220 struct elf_nds32_obj_tdata
222 struct elf_obj_tdata root
;
224 /* tls_type for each local got entry. */
225 char *local_got_tls_type
;
228 #define elf_nds32_tdata(bfd) \
229 ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any)
231 #define elf32_nds32_local_got_tls_type(bfd) \
232 (elf_nds32_tdata (bfd)->local_got_tls_type)
234 #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent))
237 nds32_elf_mkobject (bfd
*abfd
)
239 return bfd_elf_allocate_object (abfd
, sizeof (struct elf_nds32_obj_tdata
),
243 /* Relocations used for relocation. */
244 static reloc_howto_type nds32_elf_howto_table
[] =
246 /* This reloc does nothing. */
247 HOWTO (R_NDS32_NONE
, /* type */
249 3, /* size (0 = byte, 1 = short, 2 = long) */
251 FALSE
, /* pc_relative */
253 complain_overflow_dont
, /* complain_on_overflow */
254 bfd_elf_generic_reloc
, /* special_function */
255 "R_NDS32_NONE", /* name */
256 FALSE
, /* partial_inplace */
259 FALSE
), /* pcrel_offset */
261 /* A 16 bit absolute relocation. */
262 HOWTO (R_NDS32_16
, /* type */
264 1, /* size (0 = byte, 1 = short, 2 = long) */
266 FALSE
, /* pc_relative */
268 complain_overflow_bitfield
, /* complain_on_overflow */
269 nds32_elf_generic_reloc
, /* special_function */
270 "R_NDS32_16", /* name */
271 FALSE
, /* partial_inplace */
272 0xffff, /* src_mask */
273 0xffff, /* dst_mask */
274 FALSE
), /* pcrel_offset */
276 /* A 32 bit absolute relocation. */
277 HOWTO (R_NDS32_32
, /* type */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
281 FALSE
, /* pc_relative */
283 complain_overflow_bitfield
, /* complain_on_overflow */
284 nds32_elf_generic_reloc
, /* special_function */
285 "R_NDS32_32", /* name */
286 FALSE
, /* partial_inplace */
287 0xffffffff, /* src_mask */
288 0xffffffff, /* dst_mask */
289 FALSE
), /* pcrel_offset */
291 /* A 20 bit address. */
292 HOWTO (R_NDS32_20
, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE
, /* pc_relative */
298 complain_overflow_unsigned
, /* complain_on_overflow */
299 nds32_elf_generic_reloc
, /* special_function */
300 "R_NDS32_20", /* name */
301 FALSE
, /* partial_inplace */
302 0xfffff, /* src_mask */
303 0xfffff, /* dst_mask */
304 FALSE
), /* pcrel_offset */
306 /* An PC Relative 9-bit relocation, shifted by 2.
307 This reloc is complicated because relocations are relative to pc & -4.
308 i.e. branches in the right insn slot use the address of the left insn
310 /* ??? It's not clear whether this should have partial_inplace set or not.
311 Branch relaxing in the assembler can store the addend in the insn,
312 and if bfd_install_relocation gets called the addend may get added
314 HOWTO (R_NDS32_9_PCREL
, /* type */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
318 TRUE
, /* pc_relative */
320 complain_overflow_signed
, /* complain_on_overflow */
321 nds32_elf_9_pcrel_reloc
, /* special_function */
322 "R_NDS32_9_PCREL", /* name */
323 FALSE
, /* partial_inplace */
326 TRUE
), /* pcrel_offset */
328 /* A relative 15 bit relocation, right shifted by 1. */
329 HOWTO (R_NDS32_15_PCREL
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 TRUE
, /* pc_relative */
335 complain_overflow_signed
, /* complain_on_overflow */
336 bfd_elf_generic_reloc
, /* special_function */
337 "R_NDS32_15_PCREL", /* name */
338 FALSE
, /* partial_inplace */
339 0x3fff, /* src_mask */
340 0x3fff, /* dst_mask */
341 TRUE
), /* pcrel_offset */
343 /* A relative 17 bit relocation, right shifted by 1. */
344 HOWTO (R_NDS32_17_PCREL
, /* type */
346 2, /* size (0 = byte, 1 = short, 2 = long) */
348 TRUE
, /* pc_relative */
350 complain_overflow_signed
, /* complain_on_overflow */
351 bfd_elf_generic_reloc
, /* special_function */
352 "R_NDS32_17_PCREL", /* name */
353 FALSE
, /* partial_inplace */
354 0xffff, /* src_mask */
355 0xffff, /* dst_mask */
356 TRUE
), /* pcrel_offset */
358 /* A relative 25 bit relocation, right shifted by 1. */
359 /* ??? It's not clear whether this should have partial_inplace set or not.
360 Branch relaxing in the assembler can store the addend in the insn,
361 and if bfd_install_relocation gets called the addend may get added
363 HOWTO (R_NDS32_25_PCREL
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 TRUE
, /* pc_relative */
369 complain_overflow_signed
, /* complain_on_overflow */
370 bfd_elf_generic_reloc
, /* special_function */
371 "R_NDS32_25_PCREL", /* name */
372 FALSE
, /* partial_inplace */
373 0xffffff, /* src_mask */
374 0xffffff, /* dst_mask */
375 TRUE
), /* pcrel_offset */
377 /* High 20 bits of address when lower 12 is or'd in. */
378 HOWTO (R_NDS32_HI20
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 FALSE
, /* pc_relative */
384 complain_overflow_dont
,/* complain_on_overflow */
385 nds32_elf_hi20_reloc
, /* special_function */
386 "R_NDS32_HI20", /* name */
387 FALSE
, /* partial_inplace */
388 0x000fffff, /* src_mask */
389 0x000fffff, /* dst_mask */
390 FALSE
), /* pcrel_offset */
392 /* Lower 12 bits of address. */
393 HOWTO (R_NDS32_LO12S3
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 FALSE
, /* pc_relative */
399 complain_overflow_dont
,/* complain_on_overflow */
400 nds32_elf_lo12_reloc
, /* special_function */
401 "R_NDS32_LO12S3", /* name */
402 FALSE
, /* partial_inplace */
403 0x000001ff, /* src_mask */
404 0x000001ff, /* dst_mask */
405 FALSE
), /* pcrel_offset */
407 /* Lower 12 bits of address. */
408 HOWTO (R_NDS32_LO12S2
, /* type */
410 2, /* size (0 = byte, 1 = short, 2 = long) */
412 FALSE
, /* pc_relative */
414 complain_overflow_dont
,/* complain_on_overflow */
415 nds32_elf_lo12_reloc
, /* special_function */
416 "R_NDS32_LO12S2", /* name */
417 FALSE
, /* partial_inplace */
418 0x000003ff, /* src_mask */
419 0x000003ff, /* dst_mask */
420 FALSE
), /* pcrel_offset */
422 /* Lower 12 bits of address. */
423 HOWTO (R_NDS32_LO12S1
, /* type */
425 2, /* size (0 = byte, 1 = short, 2 = long) */
427 FALSE
, /* pc_relative */
429 complain_overflow_dont
,/* complain_on_overflow */
430 nds32_elf_lo12_reloc
, /* special_function */
431 "R_NDS32_LO12S1", /* name */
432 FALSE
, /* partial_inplace */
433 0x000007ff, /* src_mask */
434 0x000007ff, /* dst_mask */
435 FALSE
), /* pcrel_offset */
437 /* Lower 12 bits of address. */
438 HOWTO (R_NDS32_LO12S0
, /* type */
440 2, /* size (0 = byte, 1 = short, 2 = long) */
442 FALSE
, /* pc_relative */
444 complain_overflow_dont
,/* complain_on_overflow */
445 nds32_elf_lo12_reloc
, /* special_function */
446 "R_NDS32_LO12S0", /* name */
447 FALSE
, /* partial_inplace */
448 0x00000fff, /* src_mask */
449 0x00000fff, /* dst_mask */
450 FALSE
), /* pcrel_offset */
452 /* Small data area 15 bits offset. */
453 HOWTO (R_NDS32_SDA15S3
, /* type */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
457 FALSE
, /* pc_relative */
459 complain_overflow_signed
, /* complain_on_overflow */
460 nds32_elf_sda15_reloc
, /* special_function */
461 "R_NDS32_SDA15S3", /* name */
462 FALSE
, /* partial_inplace */
463 0x00007fff, /* src_mask */
464 0x00007fff, /* dst_mask */
465 FALSE
), /* pcrel_offset */
467 /* Small data area 15 bits offset. */
468 HOWTO (R_NDS32_SDA15S2
, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 FALSE
, /* pc_relative */
474 complain_overflow_signed
, /* complain_on_overflow */
475 nds32_elf_sda15_reloc
, /* special_function */
476 "R_NDS32_SDA15S2", /* name */
477 FALSE
, /* partial_inplace */
478 0x00007fff, /* src_mask */
479 0x00007fff, /* dst_mask */
480 FALSE
), /* pcrel_offset */
482 /* Small data area 15 bits offset. */
483 HOWTO (R_NDS32_SDA15S1
, /* type */
485 2, /* size (0 = byte, 1 = short, 2 = long) */
487 FALSE
, /* pc_relative */
489 complain_overflow_signed
, /* complain_on_overflow */
490 nds32_elf_sda15_reloc
, /* special_function */
491 "R_NDS32_SDA15S1", /* name */
492 FALSE
, /* partial_inplace */
493 0x00007fff, /* src_mask */
494 0x00007fff, /* dst_mask */
495 FALSE
), /* pcrel_offset */
497 /* Small data area 15 bits offset. */
498 HOWTO (R_NDS32_SDA15S0
, /* type */
500 2, /* size (0 = byte, 1 = short, 2 = long) */
502 FALSE
, /* pc_relative */
504 complain_overflow_signed
, /* complain_on_overflow */
505 nds32_elf_sda15_reloc
, /* special_function */
506 "R_NDS32_SDA15S0", /* name */
507 FALSE
, /* partial_inplace */
508 0x00007fff, /* src_mask */
509 0x00007fff, /* dst_mask */
510 FALSE
), /* pcrel_offset */
512 /* GNU extension to record C++ vtable hierarchy */
513 HOWTO (R_NDS32_GNU_VTINHERIT
, /* type */
515 2, /* size (0 = byte, 1 = short, 2 = long) */
517 FALSE
, /* pc_relative */
519 complain_overflow_dont
,/* complain_on_overflow */
520 NULL
, /* special_function */
521 "R_NDS32_GNU_VTINHERIT", /* name */
522 FALSE
, /* partial_inplace */
525 FALSE
), /* pcrel_offset */
527 /* GNU extension to record C++ vtable member usage */
528 HOWTO (R_NDS32_GNU_VTENTRY
, /* type */
530 2, /* size (0 = byte, 1 = short, 2 = long) */
532 FALSE
, /* pc_relative */
534 complain_overflow_dont
,/* complain_on_overflow */
535 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
536 "R_NDS32_GNU_VTENTRY", /* name */
537 FALSE
, /* partial_inplace */
540 FALSE
), /* pcrel_offset */
542 /* A 16 bit absolute relocation. */
543 HOWTO (R_NDS32_16_RELA
, /* type */
545 1, /* size (0 = byte, 1 = short, 2 = long) */
547 FALSE
, /* pc_relative */
549 complain_overflow_bitfield
, /* complain_on_overflow */
550 bfd_elf_generic_reloc
, /* special_function */
551 "R_NDS32_16_RELA", /* name */
552 FALSE
, /* partial_inplace */
553 0xffff, /* src_mask */
554 0xffff, /* dst_mask */
555 FALSE
), /* pcrel_offset */
557 /* A 32 bit absolute relocation. */
558 HOWTO (R_NDS32_32_RELA
, /* type */
560 2, /* size (0 = byte, 1 = short, 2 = long) */
562 FALSE
, /* pc_relative */
564 complain_overflow_bitfield
, /* complain_on_overflow */
565 bfd_elf_generic_reloc
, /* special_function */
566 "R_NDS32_32_RELA", /* name */
567 FALSE
, /* partial_inplace */
568 0xffffffff, /* src_mask */
569 0xffffffff, /* dst_mask */
570 FALSE
), /* pcrel_offset */
572 /* A 20 bit address. */
573 HOWTO (R_NDS32_20_RELA
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_signed
, /* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_NDS32_20_RELA", /* name */
582 FALSE
, /* partial_inplace */
583 0xfffff, /* src_mask */
584 0xfffff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 HOWTO (R_NDS32_9_PCREL_RELA
, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 TRUE
, /* pc_relative */
593 complain_overflow_signed
, /* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_NDS32_9_PCREL_RELA",/* name */
596 FALSE
, /* partial_inplace */
599 TRUE
), /* pcrel_offset */
601 /* A relative 15 bit relocation, right shifted by 1. */
602 HOWTO (R_NDS32_15_PCREL_RELA
, /* type */
604 2, /* size (0 = byte, 1 = short, 2 = long) */
606 TRUE
, /* pc_relative */
608 complain_overflow_signed
, /* complain_on_overflow */
609 bfd_elf_generic_reloc
, /* special_function */
610 "R_NDS32_15_PCREL_RELA", /* name */
611 FALSE
, /* partial_inplace */
612 0x3fff, /* src_mask */
613 0x3fff, /* dst_mask */
614 TRUE
), /* pcrel_offset */
616 /* A relative 17 bit relocation, right shifted by 1. */
617 HOWTO (R_NDS32_17_PCREL_RELA
, /* type */
619 2, /* size (0 = byte, 1 = short, 2 = long) */
621 TRUE
, /* pc_relative */
623 complain_overflow_signed
, /* complain_on_overflow */
624 bfd_elf_generic_reloc
, /* special_function */
625 "R_NDS32_17_PCREL_RELA", /* name */
626 FALSE
, /* partial_inplace */
627 0xffff, /* src_mask */
628 0xffff, /* dst_mask */
629 TRUE
), /* pcrel_offset */
631 /* A relative 25 bit relocation, right shifted by 2. */
632 HOWTO (R_NDS32_25_PCREL_RELA
, /* type */
634 2, /* size (0 = byte, 1 = short, 2 = long) */
636 TRUE
, /* pc_relative */
638 complain_overflow_signed
, /* complain_on_overflow */
639 bfd_elf_generic_reloc
, /* special_function */
640 "R_NDS32_25_PCREL_RELA", /* name */
641 FALSE
, /* partial_inplace */
642 0xffffff, /* src_mask */
643 0xffffff, /* dst_mask */
644 TRUE
), /* pcrel_offset */
646 /* High 20 bits of address when lower 16 is or'd in. */
647 HOWTO (R_NDS32_HI20_RELA
, /* type */
649 2, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE
, /* pc_relative */
653 complain_overflow_dont
,/* complain_on_overflow */
654 bfd_elf_generic_reloc
, /* special_function */
655 "R_NDS32_HI20_RELA", /* name */
656 FALSE
, /* partial_inplace */
657 0x000fffff, /* src_mask */
658 0x000fffff, /* dst_mask */
659 FALSE
), /* pcrel_offset */
661 /* Lower 12 bits of address. */
662 HOWTO (R_NDS32_LO12S3_RELA
, /* type */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
666 FALSE
, /* pc_relative */
668 complain_overflow_dont
,/* complain_on_overflow */
669 bfd_elf_generic_reloc
, /* special_function */
670 "R_NDS32_LO12S3_RELA", /* name */
671 FALSE
, /* partial_inplace */
672 0x000001ff, /* src_mask */
673 0x000001ff, /* dst_mask */
674 FALSE
), /* pcrel_offset */
676 /* Lower 12 bits of address. */
677 HOWTO (R_NDS32_LO12S2_RELA
, /* type */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
681 FALSE
, /* pc_relative */
683 complain_overflow_dont
,/* complain_on_overflow */
684 bfd_elf_generic_reloc
, /* special_function */
685 "R_NDS32_LO12S2_RELA", /* name */
686 FALSE
, /* partial_inplace */
687 0x000003ff, /* src_mask */
688 0x000003ff, /* dst_mask */
689 FALSE
), /* pcrel_offset */
691 /* Lower 12 bits of address. */
692 HOWTO (R_NDS32_LO12S1_RELA
, /* type */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
696 FALSE
, /* pc_relative */
698 complain_overflow_dont
,/* complain_on_overflow */
699 bfd_elf_generic_reloc
, /* special_function */
700 "R_NDS32_LO12S1_RELA", /* name */
701 FALSE
, /* partial_inplace */
702 0x000007ff, /* src_mask */
703 0x000007ff, /* dst_mask */
704 FALSE
), /* pcrel_offset */
706 /* Lower 12 bits of address. */
707 HOWTO (R_NDS32_LO12S0_RELA
, /* type */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
711 FALSE
, /* pc_relative */
713 complain_overflow_dont
,/* complain_on_overflow */
714 bfd_elf_generic_reloc
, /* special_function */
715 "R_NDS32_LO12S0_RELA", /* name */
716 FALSE
, /* partial_inplace */
717 0x00000fff, /* src_mask */
718 0x00000fff, /* dst_mask */
719 FALSE
), /* pcrel_offset */
721 /* Small data area 15 bits offset. */
722 HOWTO (R_NDS32_SDA15S3_RELA
, /* type */
724 2, /* size (0 = byte, 1 = short, 2 = long) */
726 FALSE
, /* pc_relative */
728 complain_overflow_signed
, /* complain_on_overflow */
729 bfd_elf_generic_reloc
, /* special_function */
730 "R_NDS32_SDA15S3_RELA",/* name */
731 FALSE
, /* partial_inplace */
732 0x00007fff, /* src_mask */
733 0x00007fff, /* dst_mask */
734 FALSE
), /* pcrel_offset */
736 /* Small data area 15 bits offset. */
737 HOWTO (R_NDS32_SDA15S2_RELA
, /* type */
739 2, /* size (0 = byte, 1 = short, 2 = long) */
741 FALSE
, /* pc_relative */
743 complain_overflow_signed
, /* complain_on_overflow */
744 bfd_elf_generic_reloc
, /* special_function */
745 "R_NDS32_SDA15S2_RELA",/* name */
746 FALSE
, /* partial_inplace */
747 0x00007fff, /* src_mask */
748 0x00007fff, /* dst_mask */
749 FALSE
), /* pcrel_offset */
751 HOWTO (R_NDS32_SDA15S1_RELA
, /* type */
753 2, /* size (0 = byte, 1 = short, 2 = long) */
755 FALSE
, /* pc_relative */
757 complain_overflow_signed
, /* complain_on_overflow */
758 bfd_elf_generic_reloc
, /* special_function */
759 "R_NDS32_SDA15S1_RELA",/* name */
760 FALSE
, /* partial_inplace */
761 0x00007fff, /* src_mask */
762 0x00007fff, /* dst_mask */
763 FALSE
), /* pcrel_offset */
765 HOWTO (R_NDS32_SDA15S0_RELA
, /* type */
767 2, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE
, /* pc_relative */
771 complain_overflow_signed
, /* complain_on_overflow */
772 bfd_elf_generic_reloc
, /* special_function */
773 "R_NDS32_SDA15S0_RELA",/* name */
774 FALSE
, /* partial_inplace */
775 0x00007fff, /* src_mask */
776 0x00007fff, /* dst_mask */
777 FALSE
), /* pcrel_offset */
779 /* GNU extension to record C++ vtable hierarchy */
780 HOWTO (R_NDS32_RELA_GNU_VTINHERIT
, /* type */
782 2, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE
, /* pc_relative */
786 complain_overflow_dont
,/* complain_on_overflow */
787 NULL
, /* special_function */
788 "R_NDS32_RELA_GNU_VTINHERIT", /* name */
789 FALSE
, /* partial_inplace */
792 FALSE
), /* pcrel_offset */
794 /* GNU extension to record C++ vtable member usage */
795 HOWTO (R_NDS32_RELA_GNU_VTENTRY
, /* type */
797 2, /* size (0 = byte, 1 = short, 2 = long) */
799 FALSE
, /* pc_relative */
801 complain_overflow_dont
,/* complain_on_overflow */
802 _bfd_elf_rel_vtable_reloc_fn
, /* special_function */
803 "R_NDS32_RELA_GNU_VTENTRY", /* name */
804 FALSE
, /* partial_inplace */
807 FALSE
), /* pcrel_offset */
809 /* Like R_NDS32_20, but referring to the GOT table entry for
811 HOWTO (R_NDS32_GOT20
, /* type */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
815 FALSE
, /* pc_relative */
817 complain_overflow_signed
, /* complain_on_overflow */
818 bfd_elf_generic_reloc
, /* special_function */
819 "R_NDS32_GOT20", /* name */
820 FALSE
, /* partial_inplace */
821 0xfffff, /* src_mask */
822 0xfffff, /* dst_mask */
823 FALSE
), /* pcrel_offset */
825 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
826 entry for the symbol. */
827 HOWTO (R_NDS32_25_PLTREL
, /* type */
829 2, /* size (0 = byte, 1 = short, 2 = long) */
831 TRUE
, /* pc_relative */
833 complain_overflow_signed
, /* complain_on_overflow */
834 bfd_elf_generic_reloc
, /* special_function */
835 "R_NDS32_25_PLTREL", /* name */
836 FALSE
, /* partial_inplace */
837 0xffffff, /* src_mask */
838 0xffffff, /* dst_mask */
839 TRUE
), /* pcrel_offset */
841 /* This is used only by the dynamic linker. The symbol should exist
842 both in the object being run and in some shared library. The
843 dynamic linker copies the data addressed by the symbol from the
844 shared library into the object, because the object being
845 run has to have the data at some particular address. */
846 HOWTO (R_NDS32_COPY
, /* type */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
850 FALSE
, /* pc_relative */
852 complain_overflow_bitfield
, /* complain_on_overflow */
853 bfd_elf_generic_reloc
, /* special_function */
854 "R_NDS32_COPY", /* name */
855 FALSE
, /* partial_inplace */
856 0xffffffff, /* src_mask */
857 0xffffffff, /* dst_mask */
858 FALSE
), /* pcrel_offset */
860 /* Like R_NDS32_20, but used when setting global offset table
862 HOWTO (R_NDS32_GLOB_DAT
, /* type */
864 2, /* size (0 = byte, 1 = short, 2 = long) */
866 FALSE
, /* pc_relative */
868 complain_overflow_bitfield
, /* complain_on_overflow */
869 bfd_elf_generic_reloc
, /* special_function */
870 "R_NDS32_GLOB_DAT", /* name */
871 FALSE
, /* partial_inplace */
872 0xffffffff, /* src_mask */
873 0xffffffff, /* dst_mask */
874 FALSE
), /* pcrel_offset */
876 /* Marks a procedure linkage table entry for a symbol. */
877 HOWTO (R_NDS32_JMP_SLOT
, /* type */
879 2, /* size (0 = byte, 1 = short, 2 = long) */
881 FALSE
, /* pc_relative */
883 complain_overflow_bitfield
, /* complain_on_overflow */
884 bfd_elf_generic_reloc
, /* special_function */
885 "R_NDS32_JMP_SLOT", /* name */
886 FALSE
, /* partial_inplace */
887 0xffffffff, /* src_mask */
888 0xffffffff, /* dst_mask */
889 FALSE
), /* pcrel_offset */
891 /* Used only by the dynamic linker. When the object is run, this
892 longword is set to the load address of the object, plus the
894 HOWTO (R_NDS32_RELATIVE
, /* type */
896 2, /* size (0 = byte, 1 = short, 2 = long) */
898 FALSE
, /* pc_relative */
900 complain_overflow_bitfield
, /* complain_on_overflow */
901 bfd_elf_generic_reloc
, /* special_function */
902 "R_NDS32_RELATIVE", /* name */
903 FALSE
, /* partial_inplace */
904 0xffffffff, /* src_mask */
905 0xffffffff, /* dst_mask */
906 FALSE
), /* pcrel_offset */
908 HOWTO (R_NDS32_GOTOFF
, /* type */
910 2, /* size (0 = byte, 1 = short, 2 = long) */
912 FALSE
, /* pc_relative */
914 complain_overflow_signed
, /* complain_on_overflow */
915 bfd_elf_generic_reloc
, /* special_function */
916 "R_NDS32_GOTOFF", /* name */
917 FALSE
, /* partial_inplace */
918 0xfffff, /* src_mask */
919 0xfffff, /* dst_mask */
920 FALSE
), /* pcrel_offset */
922 /* An PC Relative 20-bit relocation used when setting PIC offset
924 HOWTO (R_NDS32_GOTPC20
, /* type */
926 2, /* size (0 = byte, 1 = short, 2 = long) */
928 TRUE
, /* pc_relative */
930 complain_overflow_signed
, /* complain_on_overflow */
931 bfd_elf_generic_reloc
, /* special_function */
932 "R_NDS32_GOTPC20", /* name */
933 FALSE
, /* partial_inplace */
934 0xfffff, /* src_mask */
935 0xfffff, /* dst_mask */
936 TRUE
), /* pcrel_offset */
938 /* Like R_NDS32_HI20, but referring to the GOT table entry for
940 HOWTO (R_NDS32_GOT_HI20
, /* type */
942 2, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE
, /* pc_relative */
946 complain_overflow_dont
,/* complain_on_overflow */
947 bfd_elf_generic_reloc
, /* special_function */
948 "R_NDS32_GOT_HI20", /* name */
949 FALSE
, /* partial_inplace */
950 0x000fffff, /* src_mask */
951 0x000fffff, /* dst_mask */
952 FALSE
), /* pcrel_offset */
953 HOWTO (R_NDS32_GOT_LO12
, /* type */
955 2, /* size (0 = byte, 1 = short, 2 = long) */
957 FALSE
, /* pc_relative */
959 complain_overflow_dont
,/* complain_on_overflow */
960 bfd_elf_generic_reloc
, /* special_function */
961 "R_NDS32_GOT_LO12", /* name */
962 FALSE
, /* partial_inplace */
963 0x00000fff, /* src_mask */
964 0x00000fff, /* dst_mask */
965 FALSE
), /* pcrel_offset */
967 /* An PC Relative relocation used when setting PIC offset table register.
968 Like R_NDS32_HI20, but referring to the GOT table entry for
970 HOWTO (R_NDS32_GOTPC_HI20
, /* type */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE
, /* pc_relative */
976 complain_overflow_dont
,/* complain_on_overflow */
977 bfd_elf_generic_reloc
, /* special_function */
978 "R_NDS32_GOTPC_HI20", /* name */
979 FALSE
, /* partial_inplace */
980 0x000fffff, /* src_mask */
981 0x000fffff, /* dst_mask */
982 TRUE
), /* pcrel_offset */
983 HOWTO (R_NDS32_GOTPC_LO12
, /* type */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
987 FALSE
, /* pc_relative */
989 complain_overflow_dont
, /* complain_on_overflow */
990 bfd_elf_generic_reloc
, /* special_function */
991 "R_NDS32_GOTPC_LO12", /* name */
992 FALSE
, /* partial_inplace */
993 0x00000fff, /* src_mask */
994 0x00000fff, /* dst_mask */
995 TRUE
), /* pcrel_offset */
997 HOWTO (R_NDS32_GOTOFF_HI20
, /* type */
999 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 FALSE
, /* pc_relative */
1003 complain_overflow_dont
,/* complain_on_overflow */
1004 bfd_elf_generic_reloc
, /* special_function */
1005 "R_NDS32_GOTOFF_HI20", /* name */
1006 FALSE
, /* partial_inplace */
1007 0x000fffff, /* src_mask */
1008 0x000fffff, /* dst_mask */
1009 FALSE
), /* pcrel_offset */
1010 HOWTO (R_NDS32_GOTOFF_LO12
, /* type */
1012 2, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_dont
,/* complain_on_overflow */
1017 bfd_elf_generic_reloc
, /* special_function */
1018 "R_NDS32_GOTOFF_LO12", /* name */
1019 FALSE
, /* partial_inplace */
1020 0x00000fff, /* src_mask */
1021 0x00000fff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Alignment hint for relaxable instruction. This is used with
1025 R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2
1026 in order to make next label aligned on word boundary. */
1027 HOWTO (R_NDS32_INSN16
, /* type */
1029 2, /* size (0 = byte, 1 = short, 2 = long) */
1031 FALSE
, /* pc_relative */
1033 complain_overflow_dont
,/* complain_on_overflow */
1034 nds32_elf_ignore_reloc
,/* special_function */
1035 "R_NDS32_INSN16", /* name */
1036 FALSE
, /* partial_inplace */
1037 0x00000fff, /* src_mask */
1038 0x00000fff, /* dst_mask */
1039 FALSE
), /* pcrel_offset */
1041 /* Alignment hint for label. */
1042 HOWTO (R_NDS32_LABEL
, /* type */
1044 2, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_dont
,/* complain_on_overflow */
1049 nds32_elf_ignore_reloc
,/* special_function */
1050 "R_NDS32_LABEL", /* name */
1051 FALSE
, /* partial_inplace */
1052 0xffffffff, /* src_mask */
1053 0xffffffff, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1056 /* Relax hint for unconditional call sequence */
1057 HOWTO (R_NDS32_LONGCALL1
, /* type */
1059 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE
, /* pc_relative */
1063 complain_overflow_dont
,/* complain_on_overflow */
1064 nds32_elf_ignore_reloc
,/* special_function */
1065 "R_NDS32_LONGCALL1", /* name */
1066 FALSE
, /* partial_inplace */
1067 0xffffffff, /* src_mask */
1068 0xffffffff, /* dst_mask */
1069 FALSE
), /* pcrel_offset */
1071 /* Relax hint for conditional call sequence. */
1072 HOWTO (R_NDS32_LONGCALL2
, /* type */
1074 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE
, /* pc_relative */
1078 complain_overflow_dont
,/* complain_on_overflow */
1079 nds32_elf_ignore_reloc
,/* special_function */
1080 "R_NDS32_LONGCALL2", /* name */
1081 FALSE
, /* partial_inplace */
1082 0xffffffff, /* src_mask */
1083 0xffffffff, /* dst_mask */
1084 FALSE
), /* pcrel_offset */
1086 /* Relax hint for conditional call sequence. */
1087 HOWTO (R_NDS32_LONGCALL3
, /* type */
1089 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE
, /* pc_relative */
1093 complain_overflow_dont
,/* complain_on_overflow */
1094 nds32_elf_ignore_reloc
,/* special_function */
1095 "R_NDS32_LONGCALL3", /* name */
1096 FALSE
, /* partial_inplace */
1097 0xffffffff, /* src_mask */
1098 0xffffffff, /* dst_mask */
1099 FALSE
), /* pcrel_offset */
1101 /* Relax hint for unconditional branch sequence. */
1102 HOWTO (R_NDS32_LONGJUMP1
, /* type */
1104 2, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE
, /* pc_relative */
1108 complain_overflow_dont
,/* complain_on_overflow */
1109 nds32_elf_ignore_reloc
,/* special_function */
1110 "R_NDS32_LONGJUMP1", /* name */
1111 FALSE
, /* partial_inplace */
1112 0xffffffff, /* src_mask */
1113 0xffffffff, /* dst_mask */
1114 FALSE
), /* pcrel_offset */
1116 /* Relax hint for conditional branch sequence. */
1117 HOWTO (R_NDS32_LONGJUMP2
, /* type */
1119 2, /* size (0 = byte, 1 = short, 2 = long) */
1121 FALSE
, /* pc_relative */
1123 complain_overflow_dont
,/* complain_on_overflow */
1124 nds32_elf_ignore_reloc
,/* special_function */
1125 "R_NDS32_LONGJUMP2", /* name */
1126 FALSE
, /* partial_inplace */
1127 0xffffffff, /* src_mask */
1128 0xffffffff, /* dst_mask */
1129 FALSE
), /* pcrel_offset */
1131 /* Relax hint for conditional branch sequence. */
1132 HOWTO (R_NDS32_LONGJUMP3
, /* type */
1134 2, /* size (0 = byte, 1 = short, 2 = long) */
1136 FALSE
, /* pc_relative */
1138 complain_overflow_dont
,/* complain_on_overflow */
1139 nds32_elf_ignore_reloc
,/* special_function */
1140 "R_NDS32_LONGJUMP3", /* name */
1141 FALSE
, /* partial_inplace */
1142 0xffffffff, /* src_mask */
1143 0xffffffff, /* dst_mask */
1144 FALSE
), /* pcrel_offset */
1146 /* Relax hint for load/store sequence. */
1147 HOWTO (R_NDS32_LOADSTORE
, /* type */
1149 2, /* size (0 = byte, 1 = short, 2 = long) */
1151 FALSE
, /* pc_relative */
1153 complain_overflow_dont
,/* complain_on_overflow */
1154 nds32_elf_ignore_reloc
,/* special_function */
1155 "R_NDS32_LOADSTORE", /* name */
1156 FALSE
, /* partial_inplace */
1157 0xffffffff, /* src_mask */
1158 0xffffffff, /* dst_mask */
1159 FALSE
), /* pcrel_offset */
1161 /* Relax hint for load/store sequence. */
1162 HOWTO (R_NDS32_9_FIXED_RELA
, /* type */
1164 1, /* size (0 = byte, 1 = short, 2 = long) */
1166 FALSE
, /* pc_relative */
1168 complain_overflow_dont
,/* complain_on_overflow */
1169 nds32_elf_ignore_reloc
,/* special_function */
1170 "R_NDS32_9_FIXED_RELA",/* name */
1171 FALSE
, /* partial_inplace */
1172 0x000000ff, /* src_mask */
1173 0x000000ff, /* dst_mask */
1174 FALSE
), /* pcrel_offset */
1176 /* Relax hint for load/store sequence. */
1177 HOWTO (R_NDS32_15_FIXED_RELA
, /* type */
1179 2, /* size (0 = byte, 1 = short, 2 = long) */
1181 FALSE
, /* pc_relative */
1183 complain_overflow_dont
,/* complain_on_overflow */
1184 nds32_elf_ignore_reloc
,/* special_function */
1185 "R_NDS32_15_FIXED_RELA", /* name */
1186 FALSE
, /* partial_inplace */
1187 0x00003fff, /* src_mask */
1188 0x00003fff, /* dst_mask */
1189 FALSE
), /* pcrel_offset */
1191 /* Relax hint for load/store sequence. */
1192 HOWTO (R_NDS32_17_FIXED_RELA
, /* type */
1194 2, /* size (0 = byte, 1 = short, 2 = long) */
1196 FALSE
, /* pc_relative */
1198 complain_overflow_dont
,/* complain_on_overflow */
1199 nds32_elf_ignore_reloc
,/* special_function */
1200 "R_NDS32_17_FIXED_RELA", /* name */
1201 FALSE
, /* partial_inplace */
1202 0x0000ffff, /* src_mask */
1203 0x0000ffff, /* dst_mask */
1204 FALSE
), /* pcrel_offset */
1206 /* Relax hint for load/store sequence. */
1207 HOWTO (R_NDS32_25_FIXED_RELA
, /* type */
1209 2, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE
, /* pc_relative */
1213 complain_overflow_dont
,/* complain_on_overflow */
1214 nds32_elf_ignore_reloc
,/* special_function */
1215 "R_NDS32_25_FIXED_RELA", /* name */
1216 FALSE
, /* partial_inplace */
1217 0x00ffffff, /* src_mask */
1218 0x00ffffff, /* dst_mask */
1219 FALSE
), /* pcrel_offset */
1221 /* High 20 bits of PLT symbol offset relative to PC. */
1222 HOWTO (R_NDS32_PLTREL_HI20
, /* type */
1223 12, /* rightshift */
1224 2, /* size (0 = byte, 1 = short, 2 = long) */
1226 FALSE
, /* pc_relative */
1228 complain_overflow_dont
,/* complain_on_overflow */
1229 bfd_elf_generic_reloc
, /* special_function */
1230 "R_NDS32_PLTREL_HI20", /* name */
1231 FALSE
, /* partial_inplace */
1232 0x000fffff, /* src_mask */
1233 0x000fffff, /* dst_mask */
1234 FALSE
), /* pcrel_offset */
1236 /* Low 12 bits of PLT symbol offset relative to PC. */
1237 HOWTO (R_NDS32_PLTREL_LO12
, /* type */
1239 2, /* size (0 = byte, 1 = short, 2 = long) */
1241 FALSE
, /* pc_relative */
1243 complain_overflow_dont
,/* complain_on_overflow */
1244 bfd_elf_generic_reloc
, /* special_function */
1245 "R_NDS32_PLTREL_LO12", /* name */
1246 FALSE
, /* partial_inplace */
1247 0x00000fff, /* src_mask */
1248 0x00000fff, /* dst_mask */
1249 FALSE
), /* pcrel_offset */
1251 /* High 20 bits of PLT symbol offset relative to GOT (GP). */
1252 HOWTO (R_NDS32_PLT_GOTREL_HI20
, /* type */
1253 12, /* rightshift */
1254 2, /* size (0 = byte, 1 = short, 2 = long) */
1256 FALSE
, /* pc_relative */
1258 complain_overflow_dont
,/* complain_on_overflow */
1259 bfd_elf_generic_reloc
, /* special_function */
1260 "R_NDS32_PLT_GOTREL_HI20", /* name */
1261 FALSE
, /* partial_inplace */
1262 0x000fffff, /* src_mask */
1263 0x000fffff, /* dst_mask */
1264 FALSE
), /* pcrel_offset */
1266 /* Low 12 bits of PLT symbol offset relative to GOT (GP). */
1267 HOWTO (R_NDS32_PLT_GOTREL_LO12
, /* type */
1269 2, /* size (0 = byte, 1 = short, 2 = long) */
1271 FALSE
, /* pc_relative */
1273 complain_overflow_dont
,/* complain_on_overflow */
1274 bfd_elf_generic_reloc
, /* special_function */
1275 "R_NDS32_PLT_GOTREL_LO12", /* name */
1276 FALSE
, /* partial_inplace */
1277 0x00000fff, /* src_mask */
1278 0x00000fff, /* dst_mask */
1279 FALSE
), /* pcrel_offset */
1281 /* Small data area 12 bits offset. */
1282 HOWTO (R_NDS32_SDA12S2_DP_RELA
, /* type */
1284 2, /* size (0 = byte, 1 = short, 2 = long) */
1286 FALSE
, /* pc_relative */
1288 complain_overflow_signed
, /* complain_on_overflow */
1289 bfd_elf_generic_reloc
, /* special_function */
1290 "R_NDS32_SDA12S2_DP_RELA", /* name */
1291 FALSE
, /* partial_inplace */
1292 0x00000fff, /* src_mask */
1293 0x00000fff, /* dst_mask */
1294 FALSE
), /* pcrel_offset */
1296 /* Small data area 12 bits offset. */
1297 HOWTO (R_NDS32_SDA12S2_SP_RELA
, /* type */
1299 2, /* size (0 = byte, 1 = short, 2 = long) */
1301 FALSE
, /* pc_relative */
1303 complain_overflow_signed
, /* complain_on_overflow */
1304 bfd_elf_generic_reloc
, /* special_function */
1305 "R_NDS32_SDA12S2_SP_RELA", /* name */
1306 FALSE
, /* partial_inplace */
1307 0x00000fff, /* src_mask */
1308 0x00000fff, /* dst_mask */
1309 FALSE
), /* pcrel_offset */
1310 /* Lower 12 bits of address. */
1312 HOWTO (R_NDS32_LO12S2_DP_RELA
, /* type */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1316 FALSE
, /* pc_relative */
1318 complain_overflow_dont
,/* complain_on_overflow */
1319 bfd_elf_generic_reloc
, /* special_function */
1320 "R_NDS32_LO12S2_DP_RELA", /* name */
1321 FALSE
, /* partial_inplace */
1322 0x000003ff, /* src_mask */
1323 0x000003ff, /* dst_mask */
1324 FALSE
), /* pcrel_offset */
1326 /* Lower 12 bits of address. */
1327 HOWTO (R_NDS32_LO12S2_SP_RELA
,/* type */
1329 2, /* size (0 = byte, 1 = short, 2 = long) */
1331 FALSE
, /* pc_relative */
1333 complain_overflow_dont
,/* complain_on_overflow */
1334 bfd_elf_generic_reloc
, /* special_function */
1335 "R_NDS32_LO12S2_SP_RELA", /* name */
1336 FALSE
, /* partial_inplace */
1337 0x000003ff, /* src_mask */
1338 0x000003ff, /* dst_mask */
1339 FALSE
), /* pcrel_offset */
1340 /* Lower 12 bits of address. Special identity for or case. */
1341 HOWTO (R_NDS32_LO12S0_ORI_RELA
, /* type */
1343 2, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE
, /* pc_relative */
1347 complain_overflow_dont
,/* complain_on_overflow */
1348 bfd_elf_generic_reloc
, /* special_function */
1349 "R_NDS32_LO12S0_ORI_RELA", /* name */
1350 FALSE
, /* partial_inplace */
1351 0x00000fff, /* src_mask */
1352 0x00000fff, /* dst_mask */
1353 FALSE
), /* pcrel_offset */
1354 /* Small data area 19 bits offset. */
1355 HOWTO (R_NDS32_SDA16S3_RELA
, /* type */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1359 FALSE
, /* pc_relative */
1361 complain_overflow_signed
, /* complain_on_overflow */
1362 bfd_elf_generic_reloc
, /* special_function */
1363 "R_NDS32_SDA16S3_RELA",/* name */
1364 FALSE
, /* partial_inplace */
1365 0x0000ffff, /* src_mask */
1366 0x0000ffff, /* dst_mask */
1367 FALSE
), /* pcrel_offset */
1369 /* Small data area 15 bits offset. */
1370 HOWTO (R_NDS32_SDA17S2_RELA
, /* type */
1372 2, /* size (0 = byte, 1 = short, 2 = long) */
1374 FALSE
, /* pc_relative */
1376 complain_overflow_signed
, /* complain_on_overflow */
1377 bfd_elf_generic_reloc
, /* special_function */
1378 "R_NDS32_SDA17S2_RELA",/* name */
1379 FALSE
, /* partial_inplace */
1380 0x0001ffff, /* src_mask */
1381 0x0001ffff, /* dst_mask */
1382 FALSE
), /* pcrel_offset */
1384 HOWTO (R_NDS32_SDA18S1_RELA
, /* type */
1386 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 FALSE
, /* pc_relative */
1390 complain_overflow_signed
, /* complain_on_overflow */
1391 bfd_elf_generic_reloc
, /* special_function */
1392 "R_NDS32_SDA18S1_RELA",/* name */
1393 FALSE
, /* partial_inplace */
1394 0x0003ffff, /* src_mask */
1395 0x0003ffff, /* dst_mask */
1396 FALSE
), /* pcrel_offset */
1398 HOWTO (R_NDS32_SDA19S0_RELA
, /* type */
1400 2, /* size (0 = byte, 1 = short, 2 = long) */
1402 FALSE
, /* pc_relative */
1404 complain_overflow_signed
, /* complain_on_overflow */
1405 bfd_elf_generic_reloc
, /* special_function */
1406 "R_NDS32_SDA19S0_RELA",/* name */
1407 FALSE
, /* partial_inplace */
1408 0x0007ffff, /* src_mask */
1409 0x0007ffff, /* dst_mask */
1410 FALSE
), /* pcrel_offset */
1411 HOWTO (R_NDS32_DWARF2_OP1_RELA
, /* type */
1413 0, /* size (0 = byte, 1 = short, 2 = long) */
1415 FALSE
, /* pc_relative */
1417 complain_overflow_dont
,/* complain_on_overflow */
1418 nds32_elf_ignore_reloc
,/* special_function */
1419 "R_NDS32_DWARF2_OP1_RELA", /* name */
1420 FALSE
, /* partial_inplace */
1421 0xff, /* src_mask */
1422 0xff, /* dst_mask */
1423 FALSE
), /* pcrel_offset */
1424 HOWTO (R_NDS32_DWARF2_OP2_RELA
, /* type */
1426 1, /* size (0 = byte, 1 = short, 2 = long) */
1428 FALSE
, /* pc_relative */
1430 complain_overflow_dont
,/* complain_on_overflow */
1431 nds32_elf_ignore_reloc
,/* special_function */
1432 "R_NDS32_DWARF2_OP2_RELA", /* name */
1433 FALSE
, /* partial_inplace */
1434 0xffff, /* src_mask */
1435 0xffff, /* dst_mask */
1436 FALSE
), /* pcrel_offset */
1437 HOWTO (R_NDS32_DWARF2_LEB_RELA
, /* type */
1439 2, /* size (0 = byte, 1 = short, 2 = long) */
1441 FALSE
, /* pc_relative */
1443 complain_overflow_dont
,/* complain_on_overflow */
1444 nds32_elf_ignore_reloc
,/* special_function */
1445 "R_NDS32_DWARF2_LEB_RELA", /* name */
1446 FALSE
, /* partial_inplace */
1447 0xffffffff, /* src_mask */
1448 0xffffffff, /* dst_mask */
1449 FALSE
), /* pcrel_offset */
1450 HOWTO (R_NDS32_UPDATE_TA_RELA
,/* type */
1452 1, /* size (0 = byte, 1 = short, 2 = long) */
1454 FALSE
, /* pc_relative */
1456 complain_overflow_dont
,/* complain_on_overflow */
1457 nds32_elf_ignore_reloc
,/* special_function */
1458 "R_NDS32_UPDATE_TA_RELA", /* name */
1459 FALSE
, /* partial_inplace */
1460 0xffff, /* src_mask */
1461 0xffff, /* dst_mask */
1462 FALSE
), /* pcrel_offset */
1463 /* Like R_NDS32_PCREL, but referring to the procedure linkage table
1464 entry for the symbol. */
1465 HOWTO (R_NDS32_9_PLTREL
, /* type */
1467 1, /* size (0 = byte, 1 = short, 2 = long) */
1469 TRUE
, /* pc_relative */
1471 complain_overflow_signed
, /* complain_on_overflow */
1472 bfd_elf_generic_reloc
, /* special_function */
1473 "R_NDS32_9_PLTREL", /* name */
1474 FALSE
, /* partial_inplace */
1475 0xff, /* src_mask */
1476 0xff, /* dst_mask */
1477 TRUE
), /* pcrel_offset */
1478 /* Low 20 bits of PLT symbol offset relative to GOT (GP). */
1479 HOWTO (R_NDS32_PLT_GOTREL_LO20
, /* type */
1481 2, /* size (0 = byte, 1 = short, 2 = long) */
1483 FALSE
, /* pc_relative */
1485 complain_overflow_dont
,/* complain_on_overflow */
1486 bfd_elf_generic_reloc
, /* special_function */
1487 "R_NDS32_PLT_GOTREL_LO20", /* name */
1488 FALSE
, /* partial_inplace */
1489 0x000fffff, /* src_mask */
1490 0x000fffff, /* dst_mask */
1491 FALSE
), /* pcrel_offset */
1492 /* low 15 bits of PLT symbol offset relative to GOT (GP) */
1493 HOWTO (R_NDS32_PLT_GOTREL_LO15
, /* type */
1495 2, /* size (0 = byte, 1 = short, 2 = long) */
1497 FALSE
, /* pc_relative */
1499 complain_overflow_dont
,/* complain_on_overflow */
1500 bfd_elf_generic_reloc
, /* special_function */
1501 "R_NDS32_PLT_GOTREL_LO15", /* name */
1502 FALSE
, /* partial_inplace */
1503 0x00007fff, /* src_mask */
1504 0x00007fff, /* dst_mask */
1505 FALSE
), /* pcrel_offset */
1506 /* Low 19 bits of PLT symbol offset relative to GOT (GP). */
1507 HOWTO (R_NDS32_PLT_GOTREL_LO19
, /* type */
1509 2, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE
, /* pc_relative */
1513 complain_overflow_dont
,/* complain_on_overflow */
1514 bfd_elf_generic_reloc
, /* special_function */
1515 "R_NDS32_PLT_GOTREL_LO19", /* name */
1516 FALSE
, /* partial_inplace */
1517 0x0007ffff, /* src_mask */
1518 0x0007ffff, /* dst_mask */
1519 FALSE
), /* pcrel_offset */
1520 HOWTO (R_NDS32_GOT_LO15
, /* type */
1522 2, /* size (0 = byte, 1 = short, 2 = long) */
1524 FALSE
, /* pc_relative */
1526 complain_overflow_dont
,/* complain_on_overflow */
1527 bfd_elf_generic_reloc
, /* special_function */
1528 "R_NDS32_GOT_LO15", /* name */
1529 FALSE
, /* partial_inplace */
1530 0x00007fff, /* src_mask */
1531 0x00007fff, /* dst_mask */
1532 FALSE
), /* pcrel_offset */
1533 HOWTO (R_NDS32_GOT_LO19
, /* type */
1535 2, /* size (0 = byte, 1 = short, 2 = long) */
1537 FALSE
, /* pc_relative */
1539 complain_overflow_dont
,/* complain_on_overflow */
1540 bfd_elf_generic_reloc
, /* special_function */
1541 "R_NDS32_GOT_LO19", /* name */
1542 FALSE
, /* partial_inplace */
1543 0x0007ffff, /* src_mask */
1544 0x0007ffff, /* dst_mask */
1545 FALSE
), /* pcrel_offset */
1546 HOWTO (R_NDS32_GOTOFF_LO15
, /* type */
1548 2, /* size (0 = byte, 1 = short, 2 = long) */
1550 FALSE
, /* pc_relative */
1552 complain_overflow_dont
,/* complain_on_overflow */
1553 bfd_elf_generic_reloc
, /* special_function */
1554 "R_NDS32_GOTOFF_LO15", /* name */
1555 FALSE
, /* partial_inplace */
1556 0x00007fff, /* src_mask */
1557 0x00007fff, /* dst_mask */
1558 FALSE
), /* pcrel_offset */
1559 HOWTO (R_NDS32_GOTOFF_LO19
, /* type */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_dont
,/* complain_on_overflow */
1566 bfd_elf_generic_reloc
, /* special_function */
1567 "R_NDS32_GOTOFF_LO19", /* name */
1568 FALSE
, /* partial_inplace */
1569 0x0007ffff, /* src_mask */
1570 0x0007ffff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1572 /* GOT 15 bits offset. */
1573 HOWTO (R_NDS32_GOT15S2_RELA
, /* type */
1575 2, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE
, /* pc_relative */
1579 complain_overflow_signed
, /* complain_on_overflow */
1580 bfd_elf_generic_reloc
, /* special_function */
1581 "R_NDS32_GOT15S2_RELA",/* name */
1582 FALSE
, /* partial_inplace */
1583 0x00007fff, /* src_mask */
1584 0x00007fff, /* dst_mask */
1585 FALSE
), /* pcrel_offset */
1586 /* GOT 17 bits offset. */
1587 HOWTO (R_NDS32_GOT17S2_RELA
, /* type */
1589 2, /* size (0 = byte, 1 = short, 2 = long) */
1591 FALSE
, /* pc_relative */
1593 complain_overflow_signed
, /* complain_on_overflow */
1594 bfd_elf_generic_reloc
, /* special_function */
1595 "R_NDS32_GOT17S2_RELA",/* name */
1596 FALSE
, /* partial_inplace */
1597 0x0001ffff, /* src_mask */
1598 0x0001ffff, /* dst_mask */
1599 FALSE
), /* pcrel_offset */
1600 /* A 5 bit address. */
1601 HOWTO (R_NDS32_5_RELA
, /* type */
1603 1, /* size (0 = byte, 1 = short, 2 = long) */
1605 FALSE
, /* pc_relative */
1607 complain_overflow_signed
, /* complain_on_overflow */
1608 bfd_elf_generic_reloc
, /* special_function */
1609 "R_NDS32_5_RELA", /* name */
1610 FALSE
, /* partial_inplace */
1611 0x1f, /* src_mask */
1612 0x1f, /* dst_mask */
1613 FALSE
), /* pcrel_offset */
1614 HOWTO (R_NDS32_10_UPCREL_RELA
,/* type */
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 TRUE
, /* pc_relative */
1620 complain_overflow_unsigned
, /* complain_on_overflow */
1621 bfd_elf_generic_reloc
, /* special_function */
1622 "R_NDS32_10_UPCREL_RELA", /* name */
1623 FALSE
, /* partial_inplace */
1624 0x1ff, /* src_mask */
1625 0x1ff, /* dst_mask */
1626 TRUE
), /* pcrel_offset */
1627 HOWTO (R_NDS32_SDA_FP7U2_RELA
,/* type */
1629 1, /* size (0 = byte, 1 = short, 2 = long) */
1631 FALSE
, /* pc_relative */
1633 complain_overflow_unsigned
, /* complain_on_overflow */
1634 bfd_elf_generic_reloc
, /* special_function */
1635 "R_NDS32_SDA_FP7U2_RELA", /* name */
1636 FALSE
, /* partial_inplace */
1637 0x0000007f, /* src_mask */
1638 0x0000007f, /* dst_mask */
1639 FALSE
), /* pcrel_offset */
1640 HOWTO (R_NDS32_WORD_9_PCREL_RELA
, /* type */
1642 2, /* size (0 = byte, 1 = short, 2 = long) */
1644 TRUE
, /* pc_relative */
1646 complain_overflow_signed
, /* complain_on_overflow */
1647 bfd_elf_generic_reloc
, /* special_function */
1648 "R_NDS32_WORD_9_PCREL_RELA", /* name */
1649 FALSE
, /* partial_inplace */
1650 0xff, /* src_mask */
1651 0xff, /* dst_mask */
1652 TRUE
), /* pcrel_offset */
1653 HOWTO (R_NDS32_25_ABS_RELA
, /* type */
1655 2, /* size (0 = byte, 1 = short, 2 = long) */
1657 FALSE
, /* pc_relative */
1659 complain_overflow_dont
,/* complain_on_overflow */
1660 bfd_elf_generic_reloc
, /* special_function */
1661 "R_NDS32_25_ABS_RELA", /* name */
1662 FALSE
, /* partial_inplace */
1663 0xffffff, /* src_mask */
1664 0xffffff, /* dst_mask */
1665 FALSE
), /* pcrel_offset */
1667 /* A relative 17 bit relocation for ifc, right shifted by 1. */
1668 HOWTO (R_NDS32_17IFC_PCREL_RELA
, /* type */
1670 2, /* size (0 = byte, 1 = short, 2 = long) */
1672 TRUE
, /* pc_relative */
1674 complain_overflow_signed
, /* complain_on_overflow */
1675 bfd_elf_generic_reloc
, /* special_function */
1676 "R_NDS32_17IFC_PCREL_RELA", /* name */
1677 FALSE
, /* partial_inplace */
1678 0xffff, /* src_mask */
1679 0xffff, /* dst_mask */
1680 TRUE
), /* pcrel_offset */
1682 /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */
1683 HOWTO (R_NDS32_10IFCU_PCREL_RELA
, /* type */
1685 1, /* size (0 = byte, 1 = short, 2 = long) */
1687 TRUE
, /* pc_relative */
1689 complain_overflow_unsigned
, /* complain_on_overflow */
1690 bfd_elf_generic_reloc
, /* special_function */
1691 "R_NDS32_10IFCU_PCREL_RELA", /* name */
1692 FALSE
, /* partial_inplace */
1693 0x1ff, /* src_mask */
1694 0x1ff, /* dst_mask */
1695 TRUE
), /* pcrel_offset */
1697 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1698 HOWTO (R_NDS32_TLS_LE_HI20
, /* type */
1699 12, /* rightshift */
1700 2, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE
, /* pc_relative */
1704 complain_overflow_dont
, /* complain_on_overflow */
1705 bfd_elf_generic_reloc
, /* special_function */
1706 "R_NDS32_TLS_LE_HI20", /* name */
1707 FALSE
, /* partial_inplace */
1708 0x000fffff, /* src_mask */
1709 0x000fffff, /* dst_mask */
1710 FALSE
), /* pcrel_offset */
1711 HOWTO (R_NDS32_TLS_LE_LO12
, /* type */
1713 2, /* size (0 = byte, 1 = short, 2 = long) */
1715 FALSE
, /* pc_relative */
1717 complain_overflow_dont
, /* complain_on_overflow */
1718 bfd_elf_generic_reloc
, /* special_function */
1719 "R_NDS32_TLS_LE_LO12", /* name */
1720 FALSE
, /* partial_inplace */
1721 0x00000fff, /* src_mask */
1722 0x00000fff, /* dst_mask */
1723 FALSE
), /* pcrel_offset */
1725 /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */
1726 HOWTO (R_NDS32_TLS_IE_HI20
, /* type */
1727 12, /* rightshift */
1728 2, /* size (0 = byte, 1 = short, 2 = long) */
1730 FALSE
, /* pc_relative */
1732 complain_overflow_dont
, /* complain_on_overflow */
1733 bfd_elf_generic_reloc
, /* special_function */
1734 "R_NDS32_TLS_IE_HI20", /* name */
1735 FALSE
, /* partial_inplace */
1736 0x000fffff, /* src_mask */
1737 0x000fffff, /* dst_mask */
1738 FALSE
), /* pcrel_offset */
1739 HOWTO (R_NDS32_TLS_IE_LO12S2
, /* type */
1741 2, /* size (0 = byte, 1 = short, 2 = long) */
1743 FALSE
, /* pc_relative */
1745 complain_overflow_dont
, /* complain_on_overflow */
1746 bfd_elf_generic_reloc
, /* special_function */
1747 "R_NDS32_TLS_IE_LO12S2", /* name */
1748 FALSE
, /* partial_inplace */
1749 0x000003ff, /* src_mask */
1750 0x000003ff, /* dst_mask */
1751 FALSE
), /* pcrel_offset */
1752 /* Mark a TLS IE entry in GOT. */
1753 HOWTO (R_NDS32_TLS_TPOFF
, /* type */
1755 2, /* size (0 = byte, 1 = short, 2 = long) */
1757 FALSE
, /* pc_relative */
1759 complain_overflow_bitfield
, /* complain_on_overflow */
1760 bfd_elf_generic_reloc
, /* special_function */
1761 "R_NDS32_TLS_TPOFF", /* name */
1762 FALSE
, /* partial_inplace */
1763 0xffffffff, /* src_mask */
1764 0xffffffff, /* dst_mask */
1765 FALSE
), /* pcrel_offset */
1766 /* A 20 bit address. */
1767 HOWTO (R_NDS32_TLS_LE_20
, /* type */
1769 2, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE
, /* pc_relative */
1773 complain_overflow_signed
, /* complain_on_overflow */
1774 bfd_elf_generic_reloc
, /* special_function */
1775 "R_NDS32_TLS_LE_20", /* name */
1776 FALSE
, /* partial_inplace */
1777 0xfffff, /* src_mask */
1778 0xfffff, /* dst_mask */
1779 FALSE
), /* pcrel_offset */
1780 HOWTO (R_NDS32_TLS_LE_15S0
, /* type */
1782 2, /* size (0 = byte, 1 = short, 2 = long) */
1784 FALSE
, /* pc_relative */
1786 complain_overflow_signed
, /* complain_on_overflow */
1787 bfd_elf_generic_reloc
, /* special_function */
1788 "R_NDS32_TLS_LE_15S0", /* name */
1789 FALSE
, /* partial_inplace */
1790 0x7fff, /* src_mask */
1791 0x7fff, /* dst_mask */
1792 FALSE
), /* pcrel_offset */
1793 HOWTO (R_NDS32_TLS_LE_15S1
, /* type */
1795 2, /* size (0 = byte, 1 = short, 2 = long) */
1797 FALSE
, /* pc_relative */
1799 complain_overflow_signed
, /* complain_on_overflow */
1800 bfd_elf_generic_reloc
, /* special_function */
1801 "R_NDS32_TLS_LE_15S1", /* name */
1802 FALSE
, /* partial_inplace */
1803 0x7fff, /* src_mask */
1804 0x7fff, /* dst_mask */
1805 FALSE
), /* pcrel_offset */
1806 HOWTO (R_NDS32_TLS_LE_15S2
, /* type */
1808 2, /* size (0 = byte, 1 = short, 2 = long) */
1810 FALSE
, /* pc_relative */
1812 complain_overflow_signed
, /* complain_on_overflow */
1813 bfd_elf_generic_reloc
, /* special_function */
1814 "R_NDS32_TLS_LE_15S2", /* name */
1815 FALSE
, /* partial_inplace */
1816 0x7fff, /* src_mask */
1817 0x7fff, /* dst_mask */
1818 FALSE
), /* pcrel_offset */
1820 /* Relax hint for unconditional call sequence */
1821 HOWTO (R_NDS32_LONGCALL4
, /* type */
1823 2, /* size (0 = byte, 1 = short, 2 = long) */
1825 FALSE
, /* pc_relative */
1827 complain_overflow_dont
, /* complain_on_overflow */
1828 nds32_elf_ignore_reloc
, /* special_function */
1829 "R_NDS32_LONGCALL4", /* name */
1830 FALSE
, /* partial_inplace */
1831 0xffffffff, /* src_mask */
1832 0xffffffff, /* dst_mask */
1833 FALSE
), /* pcrel_offset */
1835 /* Relax hint for conditional call sequence. */
1836 HOWTO (R_NDS32_LONGCALL5
, /* type */
1838 2, /* size (0 = byte, 1 = short, 2 = long) */
1840 FALSE
, /* pc_relative */
1842 complain_overflow_dont
, /* complain_on_overflow */
1843 nds32_elf_ignore_reloc
, /* special_function */
1844 "R_NDS32_LONGCALL5", /* name */
1845 FALSE
, /* partial_inplace */
1846 0xffffffff, /* src_mask */
1847 0xffffffff, /* dst_mask */
1848 FALSE
), /* pcrel_offset */
1850 /* Relax hint for conditional call sequence. */
1851 HOWTO (R_NDS32_LONGCALL6
, /* type */
1853 2, /* size (0 = byte, 1 = short, 2 = long) */
1855 FALSE
, /* pc_relative */
1857 complain_overflow_dont
, /* complain_on_overflow */
1858 nds32_elf_ignore_reloc
, /* special_function */
1859 "R_NDS32_LONGCALL6", /* name */
1860 FALSE
, /* partial_inplace */
1861 0xffffffff, /* src_mask */
1862 0xffffffff, /* dst_mask */
1863 FALSE
), /* pcrel_offset */
1865 /* Relax hint for unconditional branch sequence. */
1866 HOWTO (R_NDS32_LONGJUMP4
, /* type */
1868 2, /* size (0 = byte, 1 = short, 2 = long) */
1870 FALSE
, /* pc_relative */
1872 complain_overflow_dont
, /* complain_on_overflow */
1873 nds32_elf_ignore_reloc
, /* special_function */
1874 "R_NDS32_LONGJUMP4", /* name */
1875 FALSE
, /* partial_inplace */
1876 0xffffffff, /* src_mask */
1877 0xffffffff, /* dst_mask */
1878 FALSE
), /* pcrel_offset */
1880 /* Relax hint for conditional branch sequence. */
1881 HOWTO (R_NDS32_LONGJUMP5
, /* type */
1883 2, /* size (0 = byte, 1 = short, 2 = long) */
1885 FALSE
, /* pc_relative */
1887 complain_overflow_dont
, /* complain_on_overflow */
1888 nds32_elf_ignore_reloc
, /* special_function */
1889 "R_NDS32_LONGJUMP5", /* name */
1890 FALSE
, /* partial_inplace */
1891 0xffffffff, /* src_mask */
1892 0xffffffff, /* dst_mask */
1893 FALSE
), /* pcrel_offset */
1895 /* Relax hint for conditional branch sequence. */
1896 HOWTO (R_NDS32_LONGJUMP6
, /* type */
1898 2, /* size (0 = byte, 1 = short, 2 = long) */
1900 FALSE
, /* pc_relative */
1902 complain_overflow_dont
, /* complain_on_overflow */
1903 nds32_elf_ignore_reloc
, /* special_function */
1904 "R_NDS32_LONGJUMP6", /* name */
1905 FALSE
, /* partial_inplace */
1906 0xffffffff, /* src_mask */
1907 0xffffffff, /* dst_mask */
1908 FALSE
), /* pcrel_offset */
1910 /* Relax hint for conditional branch sequence. */
1911 HOWTO (R_NDS32_LONGJUMP7
, /* type */
1913 2, /* size (0 = byte, 1 = short, 2 = long) */
1915 FALSE
, /* pc_relative */
1917 complain_overflow_dont
, /* complain_on_overflow */
1918 nds32_elf_ignore_reloc
, /* special_function */
1919 "R_NDS32_LONGJUMP7", /* name */
1920 FALSE
, /* partial_inplace */
1921 0xffffffff, /* src_mask */
1922 0xffffffff, /* dst_mask */
1923 FALSE
), /* pcrel_offset */
1926 /* Relocations used for relaxation. */
1927 static reloc_howto_type nds32_elf_relax_howto_table
[] =
1929 HOWTO (R_NDS32_RELAX_ENTRY
, /* type */
1931 2, /* size (0 = byte, 1 = short, 2 = long) */
1933 FALSE
, /* pc_relative */
1935 complain_overflow_dont
,/* complain_on_overflow */
1936 nds32_elf_ignore_reloc
,/* special_function */
1937 "R_NDS32_RELAX_ENTRY", /* name */
1938 FALSE
, /* partial_inplace */
1939 0xffffffff, /* src_mask */
1940 0xffffffff, /* dst_mask */
1941 FALSE
), /* pcrel_offset */
1942 HOWTO (R_NDS32_GOT_SUFF
, /* type */
1944 2, /* size (0 = byte, 1 = short, 2 = long) */
1946 FALSE
, /* pc_relative */
1948 complain_overflow_dont
,/* complain_on_overflow */
1949 nds32_elf_ignore_reloc
,/* special_function */
1950 "R_NDS32_GOT_SUFF", /* name */
1951 FALSE
, /* partial_inplace */
1952 0xffffffff, /* src_mask */
1953 0xffffffff, /* dst_mask */
1954 FALSE
), /* pcrel_offset */
1955 HOWTO (R_NDS32_GOTOFF_SUFF
, /* type */
1957 2, /* size (0 = byte, 1 = short, 2 = long) */
1959 FALSE
, /* pc_relative */
1961 complain_overflow_bitfield
, /* complain_on_overflow */
1962 nds32_elf_ignore_reloc
,/* special_function */
1963 "R_NDS32_GOTOFF_SUFF", /* name */
1964 FALSE
, /* partial_inplace */
1965 0xffffffff, /* src_mask */
1966 0xffffffff, /* dst_mask */
1967 FALSE
), /* pcrel_offset */
1968 HOWTO (R_NDS32_PLT_GOT_SUFF
, /* type */
1970 2, /* size (0 = byte, 1 = short, 2 = long) */
1972 FALSE
, /* pc_relative */
1974 complain_overflow_dont
,/* complain_on_overflow */
1975 nds32_elf_ignore_reloc
,/* special_function */
1976 "R_NDS32_PLT_GOT_SUFF",/* name */
1977 FALSE
, /* partial_inplace */
1978 0xffffffff, /* src_mask */
1979 0xffffffff, /* dst_mask */
1980 FALSE
), /* pcrel_offset */
1981 HOWTO (R_NDS32_MULCALL_SUFF
, /* type */
1983 2, /* size (0 = byte, 1 = short, 2 = long) */
1985 FALSE
, /* pc_relative */
1987 complain_overflow_dont
,/* complain_on_overflow */
1988 nds32_elf_ignore_reloc
,/* special_function */
1989 "R_NDS32_MULCALL_SUFF",/* name */
1990 FALSE
, /* partial_inplace */
1991 0xffffffff, /* src_mask */
1992 0xffffffff, /* dst_mask */
1993 FALSE
), /* pcrel_offset */
1994 HOWTO (R_NDS32_PTR
, /* type */
1996 2, /* size (0 = byte, 1 = short, 2 = long) */
1998 FALSE
, /* pc_relative */
2000 complain_overflow_dont
,/* complain_on_overflow */
2001 nds32_elf_ignore_reloc
,/* special_function */
2002 "R_NDS32_PTR", /* name */
2003 FALSE
, /* partial_inplace */
2004 0xffffffff, /* src_mask */
2005 0xffffffff, /* dst_mask */
2006 FALSE
), /* pcrel_offset */
2007 HOWTO (R_NDS32_PTR_COUNT
, /* type */
2009 2, /* size (0 = byte, 1 = short, 2 = long) */
2011 FALSE
, /* pc_relative */
2013 complain_overflow_dont
,/* complain_on_overflow */
2014 nds32_elf_ignore_reloc
,/* special_function */
2015 "R_NDS32_PTR_COUNT", /* name */
2016 FALSE
, /* partial_inplace */
2017 0xffffffff, /* src_mask */
2018 0xffffffff, /* dst_mask */
2019 FALSE
), /* pcrel_offset */
2020 HOWTO (R_NDS32_PTR_RESOLVED
, /* type */
2022 2, /* size (0 = byte, 1 = short, 2 = long) */
2024 FALSE
, /* pc_relative */
2026 complain_overflow_dont
,/* complain_on_overflow */
2027 nds32_elf_ignore_reloc
,/* special_function */
2028 "R_NDS32_PTR_RESOLVED",/* name */
2029 FALSE
, /* partial_inplace */
2030 0xffffffff, /* src_mask */
2031 0xffffffff, /* dst_mask */
2032 FALSE
), /* pcrel_offset */
2033 HOWTO (R_NDS32_PLTBLOCK
, /* type */
2035 2, /* size (0 = byte, 1 = short, 2 = long) */
2037 FALSE
, /* pc_relative */
2039 complain_overflow_dont
,/* complain_on_overflow */
2040 nds32_elf_ignore_reloc
,/* special_function */
2041 "R_NDS32_PLTBLOCK", /* name */
2042 FALSE
, /* partial_inplace */
2043 0xffffffff, /* src_mask */
2044 0xffffffff, /* dst_mask */
2045 FALSE
), /* pcrel_offset */
2046 HOWTO (R_NDS32_RELAX_REGION_BEGIN
, /* type */
2048 2, /* size (0 = byte, 1 = short, 2 = long) */
2050 FALSE
, /* pc_relative */
2052 complain_overflow_dont
,/* complain_on_overflow */
2053 nds32_elf_ignore_reloc
,/* special_function */
2054 "R_NDS32_RELAX_REGION_BEGIN", /* name */
2055 FALSE
, /* partial_inplace */
2056 0xffffffff, /* src_mask */
2057 0xffffffff, /* dst_mask */
2058 FALSE
), /* pcrel_offset */
2059 HOWTO (R_NDS32_RELAX_REGION_END
, /* type */
2061 2, /* size (0 = byte, 1 = short, 2 = long) */
2063 FALSE
, /* pc_relative */
2065 complain_overflow_dont
,/* complain_on_overflow */
2066 nds32_elf_ignore_reloc
,/* special_function */
2067 "R_NDS32_RELAX_REGION_END", /* name */
2068 FALSE
, /* partial_inplace */
2069 0xffffffff, /* src_mask */
2070 0xffffffff, /* dst_mask */
2071 FALSE
), /* pcrel_offset */
2072 HOWTO (R_NDS32_MINUEND
, /* type */
2074 2, /* size (0 = byte, 1 = short, 2 = long) */
2076 FALSE
, /* pc_relative */
2078 complain_overflow_dont
,/* complain_on_overflow */
2079 nds32_elf_ignore_reloc
,/* special_function */
2080 "R_NDS32_MINUEND", /* name */
2081 FALSE
, /* partial_inplace */
2082 0xffffffff, /* src_mask */
2083 0xffffffff, /* dst_mask */
2084 FALSE
), /* pcrel_offset */
2085 HOWTO (R_NDS32_SUBTRAHEND
, /* type */
2087 2, /* size (0 = byte, 1 = short, 2 = long) */
2089 FALSE
, /* pc_relative */
2091 complain_overflow_dont
,/* complain_on_overflow */
2092 nds32_elf_ignore_reloc
,/* special_function */
2093 "R_NDS32_SUBTRAHEND", /* name */
2094 FALSE
, /* partial_inplace */
2095 0xffffffff, /* src_mask */
2096 0xffffffff, /* dst_mask */
2097 FALSE
), /* pcrel_offset */
2098 HOWTO (R_NDS32_DIFF8
, /* type */
2100 0, /* size (0 = byte, 1 = short, 2 = long) */
2102 FALSE
, /* pc_relative */
2104 complain_overflow_dont
,/* complain_on_overflow */
2105 nds32_elf_ignore_reloc
,/* special_function */
2106 "R_NDS32_DIFF8", /* name */
2107 FALSE
, /* partial_inplace */
2108 0x000000ff, /* src_mask */
2109 0x000000ff, /* dst_mask */
2110 FALSE
), /* pcrel_offset */
2111 HOWTO (R_NDS32_DIFF16
, /* type */
2113 1, /* size (0 = byte, 1 = short, 2 = long) */
2115 FALSE
, /* pc_relative */
2117 complain_overflow_dont
,/* complain_on_overflow */
2118 nds32_elf_ignore_reloc
,/* special_function */
2119 "R_NDS32_DIFF16", /* name */
2120 FALSE
, /* partial_inplace */
2121 0x0000ffff, /* src_mask */
2122 0x0000ffff, /* dst_mask */
2123 FALSE
), /* pcrel_offset */
2124 HOWTO (R_NDS32_DIFF32
, /* type */
2126 2, /* size (0 = byte, 1 = short, 2 = long) */
2128 FALSE
, /* pc_relative */
2130 complain_overflow_dont
,/* complain_on_overflow */
2131 nds32_elf_ignore_reloc
,/* special_function */
2132 "R_NDS32_DIFF32", /* name */
2133 FALSE
, /* partial_inplace */
2134 0xffffffff, /* src_mask */
2135 0xffffffff, /* dst_mask */
2136 FALSE
), /* pcrel_offset */
2137 HOWTO (R_NDS32_DIFF_ULEB128
, /* type */
2139 0, /* size (0 = byte, 1 = short, 2 = long) */
2141 FALSE
, /* pc_relative */
2143 complain_overflow_dont
,/* complain_on_overflow */
2144 nds32_elf_ignore_reloc
,/* special_function */
2145 "R_NDS32_DIFF_ULEB128",/* name */
2146 FALSE
, /* partial_inplace */
2147 0xffffffff, /* src_mask */
2148 0xffffffff, /* dst_mask */
2149 FALSE
), /* pcrel_offset */
2150 HOWTO (R_NDS32_DATA
, /* type */
2152 2, /* size (0 = byte, 1 = short, 2 = long) */
2154 FALSE
, /* pc_relative */
2156 complain_overflow_dont
,/* complain_on_overflow */
2157 nds32_elf_ignore_reloc
,/* special_function */
2158 "R_NDS32_DATA", /* name */
2159 FALSE
, /* partial_inplace */
2160 0xffffffff, /* src_mask */
2161 0xffffffff, /* dst_mask */
2162 FALSE
), /* pcrel_offset */
2163 HOWTO (R_NDS32_TRAN
, /* type */
2165 2, /* size (0 = byte, 1 = short, 2 = long) */
2167 FALSE
, /* pc_relative */
2169 complain_overflow_dont
,/* complain_on_overflow */
2170 nds32_elf_ignore_reloc
,/* special_function */
2171 "R_NDS32_TRAN", /* name */
2172 FALSE
, /* partial_inplace */
2173 0xffffffff, /* src_mask */
2174 0xffffffff, /* dst_mask */
2175 FALSE
), /* pcrel_offset */
2176 HOWTO (R_NDS32_TLS_LE_ADD
, /* type */
2178 2, /* size (0 = byte, 1 = short, 2 = long) */
2180 FALSE
, /* pc_relative */
2182 complain_overflow_dont
, /* complain_on_overflow */
2183 nds32_elf_ignore_reloc
, /* special_function */
2184 "R_NDS32_TLS_LE_ADD", /* name */
2185 FALSE
, /* partial_inplace */
2186 0xffffffff, /* src_mask */
2187 0xffffffff, /* dst_mask */
2188 FALSE
), /* pcrel_offset */
2189 HOWTO (R_NDS32_TLS_LE_LS
, /* type */
2191 2, /* size (0 = byte, 1 = short, 2 = long) */
2193 FALSE
, /* pc_relative */
2195 complain_overflow_dont
, /* complain_on_overflow */
2196 nds32_elf_ignore_reloc
, /* special_function */
2197 "R_NDS32_TLS_LE_LS", /* name */
2198 FALSE
, /* partial_inplace */
2199 0xffffffff, /* src_mask */
2200 0xffffffff, /* dst_mask */
2201 FALSE
), /* pcrel_offset */
2202 HOWTO (R_NDS32_EMPTY
, /* type */
2204 2, /* size (0 = byte, 1 = short, 2 = long) */
2206 FALSE
, /* pc_relative */
2208 complain_overflow_dont
, /* complain_on_overflow */
2209 nds32_elf_ignore_reloc
, /* special_function */
2210 "R_NDS32_EMPTY", /* name */
2211 FALSE
, /* partial_inplace */
2212 0xffffffff, /* src_mask */
2213 0xffffffff, /* dst_mask */
2214 FALSE
), /* pcrel_offset */
2218 /* nds32_insertion_sort sorts an array with nmemb elements of size size.
2219 This prototype is the same as qsort (). */
2222 nds32_insertion_sort (void *base
, size_t nmemb
, size_t size
,
2223 int (*compar
) (const void *lhs
, const void *rhs
))
2225 char *ptr
= (char *) base
;
2227 char *tmp
= xmalloc (size
);
2229 /* If i is less than j, i is inserted before j.
2231 |---- j ----- i --------------|
2236 for (i
= 1; i
< (int) nmemb
; i
++)
2238 for (j
= (i
- 1); j
>= 0; j
--)
2239 if (compar (ptr
+ i
* size
, ptr
+ j
* size
) >= 0)
2245 continue; /* i is in order. */
2247 memcpy (tmp
, ptr
+ i
* size
, size
);
2248 memmove (ptr
+ (j
+ 1) * size
, ptr
+ j
* size
, (i
- j
) * size
);
2249 memcpy (ptr
+ j
* size
, tmp
, size
);
2254 /* Sort relocation by r_offset.
2256 We didn't use qsort () in stdlib, because quick-sort is not a stable sorting
2257 algorithm. Relocations at the same r_offset must keep their order.
2258 For example, RELAX_ENTRY must be the very first relocation entry.
2260 Currently, this function implements insertion-sort.
2262 FIXME: If we already sort them in assembler, why bother sort them
2266 compar_reloc (const void *lhs
, const void *rhs
)
2268 const Elf_Internal_Rela
*l
= (const Elf_Internal_Rela
*) lhs
;
2269 const Elf_Internal_Rela
*r
= (const Elf_Internal_Rela
*) rhs
;
2271 if (l
->r_offset
> r
->r_offset
)
2273 else if (l
->r_offset
== r
->r_offset
)
2279 /* Functions listed below are only used for old relocs.
2280 * nds32_elf_9_pcrel_reloc
2281 * nds32_elf_do_9_pcrel_reloc
2282 * nds32_elf_hi20_reloc
2283 * nds32_elf_relocate_hi20
2284 * nds32_elf_lo12_reloc
2285 * nds32_elf_sda15_reloc
2286 * nds32_elf_generic_reloc
2289 /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */
2291 static bfd_reloc_status_type
2292 nds32_elf_9_pcrel_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2293 void *data
, asection
*input_section
, bfd
*output_bfd
,
2294 char **error_message ATTRIBUTE_UNUSED
)
2296 /* This part is from bfd_elf_generic_reloc. */
2297 if (output_bfd
!= (bfd
*) NULL
2298 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
2299 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
2301 reloc_entry
->address
+= input_section
->output_offset
;
2302 return bfd_reloc_ok
;
2305 if (output_bfd
!= NULL
)
2307 /* FIXME: See bfd_perform_relocation. Is this right? */
2308 return bfd_reloc_continue
;
2311 return nds32_elf_do_9_pcrel_reloc (abfd
, reloc_entry
->howto
,
2313 data
, reloc_entry
->address
,
2316 + symbol
->section
->output_section
->vma
2317 + symbol
->section
->output_offset
),
2318 reloc_entry
->addend
);
2321 /* Utility to actually perform an R_NDS32_9_PCREL reloc. */
2322 #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1)
2324 static bfd_reloc_status_type
2325 nds32_elf_do_9_pcrel_reloc (bfd
*abfd
, reloc_howto_type
*howto
,
2326 asection
*input_section
, bfd_byte
*data
,
2328 asection
*symbol_section ATTRIBUTE_UNUSED
,
2329 bfd_vma symbol_value
, bfd_vma addend
)
2331 bfd_signed_vma relocation
;
2333 bfd_reloc_status_type status
;
2335 /* Sanity check the address (offset in section). */
2336 if (offset
> bfd_get_section_limit (abfd
, input_section
))
2337 return bfd_reloc_outofrange
;
2339 relocation
= symbol_value
+ addend
;
2340 /* Make it pc relative. */
2341 relocation
-= (input_section
->output_section
->vma
2342 + input_section
->output_offset
);
2343 /* These jumps mask off the lower two bits of the current address
2344 before doing pcrel calculations. */
2345 relocation
-= (offset
& -(bfd_vma
) 2);
2347 if (relocation
< -ACCURATE_8BIT_S1
|| relocation
>= ACCURATE_8BIT_S1
)
2348 status
= bfd_reloc_overflow
;
2350 status
= bfd_reloc_ok
;
2352 x
= bfd_getb16 (data
+ offset
);
2354 relocation
>>= howto
->rightshift
;
2355 relocation
<<= howto
->bitpos
;
2356 x
= (x
& ~howto
->dst_mask
)
2357 | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
);
2359 bfd_putb16 ((bfd_vma
) x
, data
+ offset
);
2364 /* Handle the R_NDS32_HI20_[SU]LO relocs.
2365 HI20_SLO is for the add3 and load/store with displacement instructions.
2366 HI20 is for the or3 instruction.
2367 For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to
2368 the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then
2369 we must add one to the high 16 bytes (which will get subtracted off when
2370 the low 16 bits are added).
2371 These relocs have to be done in combination with an R_NDS32_LO12 reloc
2372 because there is a carry from the LO12 to the HI20. Here we just save
2373 the information we need; we do the actual relocation when we see the LO12.
2374 This code is copied from the elf32-mips.c. We also support an arbitrary
2375 number of HI20 relocs to be associated with a single LO12 reloc. The
2376 assembler sorts the relocs to ensure each HI20 immediately precedes its
2377 LO12. However if there are multiple copies, the assembler may not find
2378 the real LO12 so it picks the first one it finds. */
2382 struct nds32_hi20
*next
;
2387 static struct nds32_hi20
*nds32_hi20_list
;
2389 static bfd_reloc_status_type
2390 nds32_elf_hi20_reloc (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*reloc_entry
,
2391 asymbol
*symbol
, void *data
, asection
*input_section
,
2392 bfd
*output_bfd
, char **error_message ATTRIBUTE_UNUSED
)
2394 bfd_reloc_status_type ret
;
2396 struct nds32_hi20
*n
;
2398 /* This part is from bfd_elf_generic_reloc.
2399 If we're relocating, and this an external symbol, we don't want
2400 to change anything. */
2401 if (output_bfd
!= (bfd
*) NULL
2402 && (symbol
->flags
& BSF_SECTION_SYM
) == 0 && reloc_entry
->addend
== 0)
2404 reloc_entry
->address
+= input_section
->output_offset
;
2405 return bfd_reloc_ok
;
2408 /* Sanity check the address (offset in section). */
2409 if (reloc_entry
->address
> bfd_get_section_limit (abfd
, input_section
))
2410 return bfd_reloc_outofrange
;
2413 if (bfd_is_und_section (symbol
->section
) && output_bfd
== (bfd
*) NULL
)
2414 ret
= bfd_reloc_undefined
;
2416 if (bfd_is_com_section (symbol
->section
))
2419 relocation
= symbol
->value
;
2421 relocation
+= symbol
->section
->output_section
->vma
;
2422 relocation
+= symbol
->section
->output_offset
;
2423 relocation
+= reloc_entry
->addend
;
2425 /* Save the information, and let LO12 do the actual relocation. */
2426 n
= (struct nds32_hi20
*) bfd_malloc ((bfd_size_type
) sizeof *n
);
2428 return bfd_reloc_outofrange
;
2430 n
->addr
= (bfd_byte
*) data
+ reloc_entry
->address
;
2431 n
->addend
= relocation
;
2432 n
->next
= nds32_hi20_list
;
2433 nds32_hi20_list
= n
;
2435 if (output_bfd
!= (bfd
*) NULL
)
2436 reloc_entry
->address
+= input_section
->output_offset
;
2441 /* Handle an NDS32 ELF HI20 reloc. */
2444 nds32_elf_relocate_hi20 (bfd
*input_bfd ATTRIBUTE_UNUSED
,
2445 int type ATTRIBUTE_UNUSED
, Elf_Internal_Rela
*relhi
,
2446 Elf_Internal_Rela
*rello
, bfd_byte
*contents
,
2452 insn
= bfd_getb32 (contents
+ relhi
->r_offset
);
2454 addlo
= bfd_getb32 (contents
+ rello
->r_offset
);
2457 addend
+= ((insn
& 0xfffff) << 20) + addlo
;
2459 insn
= (insn
& 0xfff00000) | ((addend
>> 12) & 0xfffff);
2460 bfd_putb32 (insn
, contents
+ relhi
->r_offset
);
2463 /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit
2464 inplace relocation; this function exists in order to do the
2465 R_NDS32_HI20_[SU]LO relocation described above. */
2467 static bfd_reloc_status_type
2468 nds32_elf_lo12_reloc (bfd
*input_bfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2469 void *data
, asection
*input_section
, bfd
*output_bfd
,
2470 char **error_message
)
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
!= NULL
&& (symbol
->flags
& BSF_SECTION_SYM
) == 0
2476 && reloc_entry
->addend
== 0)
2478 reloc_entry
->address
+= input_section
->output_offset
;
2479 return bfd_reloc_ok
;
2482 if (nds32_hi20_list
!= NULL
)
2484 struct nds32_hi20
*l
;
2486 l
= nds32_hi20_list
;
2491 unsigned long vallo
;
2492 struct nds32_hi20
*next
;
2494 /* Do the HI20 relocation. Note that we actually don't need
2495 to know anything about the LO12 itself, except where to
2496 find the low 12 bits of the addend needed by the LO12. */
2497 insn
= bfd_getb32 (l
->addr
);
2498 vallo
= bfd_getb32 ((bfd_byte
*) data
+ reloc_entry
->address
);
2500 switch (reloc_entry
->howto
->type
)
2502 case R_NDS32_LO12S3
:
2506 case R_NDS32_LO12S2
:
2510 case R_NDS32_LO12S1
:
2514 case R_NDS32_LO12S0
:
2519 val
= ((insn
& 0xfffff) << 12) + vallo
;
2522 insn
= (insn
& ~(bfd_vma
) 0xfffff) | ((val
>> 12) & 0xfffff);
2523 bfd_putb32 ((bfd_vma
) insn
, l
->addr
);
2530 nds32_hi20_list
= NULL
;
2533 /* Now do the LO12 reloc in the usual way.
2534 ??? It would be nice to call bfd_elf_generic_reloc here,
2535 but we have partial_inplace set. bfd_elf_generic_reloc will
2536 pass the handling back to bfd_install_relocation which will install
2537 a section relative addend which is wrong. */
2538 return nds32_elf_generic_reloc (input_bfd
, reloc_entry
, symbol
, data
,
2539 input_section
, output_bfd
, error_message
);
2542 /* Do generic partial_inplace relocation.
2543 This is a local replacement for bfd_elf_generic_reloc. */
2545 static bfd_reloc_status_type
2546 nds32_elf_generic_reloc (bfd
*input_bfd
, arelent
*reloc_entry
,
2547 asymbol
*symbol
, void *data
, asection
*input_section
,
2548 bfd
*output_bfd
, char **error_message ATTRIBUTE_UNUSED
)
2550 bfd_reloc_status_type ret
;
2552 bfd_byte
*inplace_address
;
2554 /* This part is from bfd_elf_generic_reloc.
2555 If we're relocating, and this an external symbol, we don't want
2556 to change anything. */
2557 if (output_bfd
!= NULL
&& (symbol
->flags
& BSF_SECTION_SYM
) == 0
2558 && reloc_entry
->addend
== 0)
2560 reloc_entry
->address
+= input_section
->output_offset
;
2561 return bfd_reloc_ok
;
2564 /* Now do the reloc in the usual way.
2565 ??? It would be nice to call bfd_elf_generic_reloc here,
2566 but we have partial_inplace set. bfd_elf_generic_reloc will
2567 pass the handling back to bfd_install_relocation which will install
2568 a section relative addend which is wrong. */
2570 /* Sanity check the address (offset in section). */
2571 if (reloc_entry
->address
> bfd_get_section_limit (input_bfd
, input_section
))
2572 return bfd_reloc_outofrange
;
2575 if (bfd_is_und_section (symbol
->section
) && output_bfd
== (bfd
*) NULL
)
2576 ret
= bfd_reloc_undefined
;
2578 if (bfd_is_com_section (symbol
->section
) || output_bfd
!= (bfd
*) NULL
)
2581 relocation
= symbol
->value
;
2583 /* Only do this for a final link. */
2584 if (output_bfd
== (bfd
*) NULL
)
2586 relocation
+= symbol
->section
->output_section
->vma
;
2587 relocation
+= symbol
->section
->output_offset
;
2590 relocation
+= reloc_entry
->addend
;
2591 switch (reloc_entry
->howto
->type
)
2593 case R_NDS32_LO12S3
:
2597 case R_NDS32_LO12S2
:
2601 case R_NDS32_LO12S1
:
2605 case R_NDS32_LO12S0
:
2611 inplace_address
= (bfd_byte
*) data
+ reloc_entry
->address
;
2614 x = ((x & ~reloc_entry->howto->dst_mask) | \
2615 (((x & reloc_entry->howto->src_mask) + relocation) & \
2616 reloc_entry->howto->dst_mask))
2618 switch (reloc_entry
->howto
->size
)
2622 short x
= bfd_getb16 (inplace_address
);
2625 bfd_putb16 ((bfd_vma
) x
, inplace_address
);
2630 unsigned long x
= bfd_getb32 (inplace_address
);
2633 bfd_putb32 ((bfd_vma
) x
, inplace_address
);
2640 if (output_bfd
!= (bfd
*) NULL
)
2641 reloc_entry
->address
+= input_section
->output_offset
;
2646 /* Handle the R_NDS32_SDA15 reloc.
2647 This reloc is used to compute the address of objects in the small data area
2648 and to perform loads and stores from that area.
2649 The lower 15 bits are sign extended and added to the register specified
2650 in the instruction, which is assumed to point to _SDA_BASE_.
2652 Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on
2653 the access size, this must be taken care of. */
2655 static bfd_reloc_status_type
2656 nds32_elf_sda15_reloc (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*reloc_entry
,
2657 asymbol
*symbol
, void *data ATTRIBUTE_UNUSED
,
2658 asection
*input_section
, bfd
*output_bfd
,
2659 char **error_message ATTRIBUTE_UNUSED
)
2661 /* This part is from bfd_elf_generic_reloc. */
2662 if (output_bfd
!= (bfd
*) NULL
2663 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
2664 && (!reloc_entry
->howto
->partial_inplace
|| reloc_entry
->addend
== 0))
2666 reloc_entry
->address
+= input_section
->output_offset
;
2667 return bfd_reloc_ok
;
2670 if (output_bfd
!= NULL
)
2672 /* FIXME: See bfd_perform_relocation. Is this right? */
2673 return bfd_reloc_continue
;
2676 /* FIXME: not sure what to do here yet. But then again, the linker
2677 may never call us. */
2681 /* nds32_elf_ignore_reloc is the special function for
2682 relocation types which don't need to be relocated
2683 like relaxation relocation types.
2684 This function simply return bfd_reloc_ok when it is
2687 static bfd_reloc_status_type
2688 nds32_elf_ignore_reloc (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*reloc_entry
,
2689 asymbol
*symbol ATTRIBUTE_UNUSED
,
2690 void *data ATTRIBUTE_UNUSED
, asection
*input_section
,
2691 bfd
*output_bfd
, char **error_message ATTRIBUTE_UNUSED
)
2693 if (output_bfd
!= NULL
)
2694 reloc_entry
->address
+= input_section
->output_offset
;
2696 return bfd_reloc_ok
;
2700 /* Map BFD reloc types to NDS32 ELF reloc types. */
2702 struct nds32_reloc_map_entry
2704 bfd_reloc_code_real_type bfd_reloc_val
;
2705 unsigned char elf_reloc_val
;
2708 static const struct nds32_reloc_map_entry nds32_reloc_map
[] =
2710 {BFD_RELOC_NONE
, R_NDS32_NONE
},
2711 {BFD_RELOC_16
, R_NDS32_16_RELA
},
2712 {BFD_RELOC_32
, R_NDS32_32_RELA
},
2713 {BFD_RELOC_NDS32_20
, R_NDS32_20_RELA
},
2714 {BFD_RELOC_NDS32_5
, R_NDS32_5_RELA
},
2715 {BFD_RELOC_NDS32_9_PCREL
, R_NDS32_9_PCREL_RELA
},
2716 {BFD_RELOC_NDS32_WORD_9_PCREL
, R_NDS32_WORD_9_PCREL_RELA
},
2717 {BFD_RELOC_NDS32_15_PCREL
, R_NDS32_15_PCREL_RELA
},
2718 {BFD_RELOC_NDS32_17_PCREL
, R_NDS32_17_PCREL_RELA
},
2719 {BFD_RELOC_NDS32_25_PCREL
, R_NDS32_25_PCREL_RELA
},
2720 {BFD_RELOC_NDS32_10_UPCREL
, R_NDS32_10_UPCREL_RELA
},
2721 {BFD_RELOC_NDS32_HI20
, R_NDS32_HI20_RELA
},
2722 {BFD_RELOC_NDS32_LO12S3
, R_NDS32_LO12S3_RELA
},
2723 {BFD_RELOC_NDS32_LO12S2
, R_NDS32_LO12S2_RELA
},
2724 {BFD_RELOC_NDS32_LO12S1
, R_NDS32_LO12S1_RELA
},
2725 {BFD_RELOC_NDS32_LO12S0
, R_NDS32_LO12S0_RELA
},
2726 {BFD_RELOC_NDS32_LO12S0_ORI
, R_NDS32_LO12S0_ORI_RELA
},
2727 {BFD_RELOC_NDS32_SDA15S3
, R_NDS32_SDA15S3_RELA
},
2728 {BFD_RELOC_NDS32_SDA15S2
, R_NDS32_SDA15S2_RELA
},
2729 {BFD_RELOC_NDS32_SDA15S1
, R_NDS32_SDA15S1_RELA
},
2730 {BFD_RELOC_NDS32_SDA15S0
, R_NDS32_SDA15S0_RELA
},
2731 {BFD_RELOC_VTABLE_INHERIT
, R_NDS32_RELA_GNU_VTINHERIT
},
2732 {BFD_RELOC_VTABLE_ENTRY
, R_NDS32_RELA_GNU_VTENTRY
},
2734 {BFD_RELOC_NDS32_GOT20
, R_NDS32_GOT20
},
2735 {BFD_RELOC_NDS32_9_PLTREL
, R_NDS32_9_PLTREL
},
2736 {BFD_RELOC_NDS32_25_PLTREL
, R_NDS32_25_PLTREL
},
2737 {BFD_RELOC_NDS32_COPY
, R_NDS32_COPY
},
2738 {BFD_RELOC_NDS32_GLOB_DAT
, R_NDS32_GLOB_DAT
},
2739 {BFD_RELOC_NDS32_JMP_SLOT
, R_NDS32_JMP_SLOT
},
2740 {BFD_RELOC_NDS32_RELATIVE
, R_NDS32_RELATIVE
},
2741 {BFD_RELOC_NDS32_GOTOFF
, R_NDS32_GOTOFF
},
2742 {BFD_RELOC_NDS32_GOTPC20
, R_NDS32_GOTPC20
},
2743 {BFD_RELOC_NDS32_GOT_HI20
, R_NDS32_GOT_HI20
},
2744 {BFD_RELOC_NDS32_GOT_LO12
, R_NDS32_GOT_LO12
},
2745 {BFD_RELOC_NDS32_GOT_LO15
, R_NDS32_GOT_LO15
},
2746 {BFD_RELOC_NDS32_GOT_LO19
, R_NDS32_GOT_LO19
},
2747 {BFD_RELOC_NDS32_GOTPC_HI20
, R_NDS32_GOTPC_HI20
},
2748 {BFD_RELOC_NDS32_GOTPC_LO12
, R_NDS32_GOTPC_LO12
},
2749 {BFD_RELOC_NDS32_GOTOFF_HI20
, R_NDS32_GOTOFF_HI20
},
2750 {BFD_RELOC_NDS32_GOTOFF_LO12
, R_NDS32_GOTOFF_LO12
},
2751 {BFD_RELOC_NDS32_GOTOFF_LO15
, R_NDS32_GOTOFF_LO15
},
2752 {BFD_RELOC_NDS32_GOTOFF_LO19
, R_NDS32_GOTOFF_LO19
},
2753 {BFD_RELOC_NDS32_INSN16
, R_NDS32_INSN16
},
2754 {BFD_RELOC_NDS32_LABEL
, R_NDS32_LABEL
},
2755 {BFD_RELOC_NDS32_LONGCALL1
, R_NDS32_LONGCALL1
},
2756 {BFD_RELOC_NDS32_LONGCALL2
, R_NDS32_LONGCALL2
},
2757 {BFD_RELOC_NDS32_LONGCALL3
, R_NDS32_LONGCALL3
},
2758 {BFD_RELOC_NDS32_LONGCALL4
, R_NDS32_LONGCALL4
},
2759 {BFD_RELOC_NDS32_LONGCALL5
, R_NDS32_LONGCALL5
},
2760 {BFD_RELOC_NDS32_LONGCALL6
, R_NDS32_LONGCALL6
},
2761 {BFD_RELOC_NDS32_LONGJUMP1
, R_NDS32_LONGJUMP1
},
2762 {BFD_RELOC_NDS32_LONGJUMP2
, R_NDS32_LONGJUMP2
},
2763 {BFD_RELOC_NDS32_LONGJUMP3
, R_NDS32_LONGJUMP3
},
2764 {BFD_RELOC_NDS32_LONGJUMP4
, R_NDS32_LONGJUMP4
},
2765 {BFD_RELOC_NDS32_LONGJUMP5
, R_NDS32_LONGJUMP5
},
2766 {BFD_RELOC_NDS32_LONGJUMP6
, R_NDS32_LONGJUMP6
},
2767 {BFD_RELOC_NDS32_LONGJUMP7
, R_NDS32_LONGJUMP7
},
2768 {BFD_RELOC_NDS32_LOADSTORE
, R_NDS32_LOADSTORE
},
2769 {BFD_RELOC_NDS32_9_FIXED
, R_NDS32_9_FIXED_RELA
},
2770 {BFD_RELOC_NDS32_15_FIXED
, R_NDS32_15_FIXED_RELA
},
2771 {BFD_RELOC_NDS32_17_FIXED
, R_NDS32_17_FIXED_RELA
},
2772 {BFD_RELOC_NDS32_25_FIXED
, R_NDS32_25_FIXED_RELA
},
2773 {BFD_RELOC_NDS32_PLTREL_HI20
, R_NDS32_PLTREL_HI20
},
2774 {BFD_RELOC_NDS32_PLTREL_LO12
, R_NDS32_PLTREL_LO12
},
2775 {BFD_RELOC_NDS32_PLT_GOTREL_HI20
, R_NDS32_PLT_GOTREL_HI20
},
2776 {BFD_RELOC_NDS32_PLT_GOTREL_LO12
, R_NDS32_PLT_GOTREL_LO12
},
2777 {BFD_RELOC_NDS32_PLT_GOTREL_LO15
, R_NDS32_PLT_GOTREL_LO15
},
2778 {BFD_RELOC_NDS32_PLT_GOTREL_LO19
, R_NDS32_PLT_GOTREL_LO19
},
2779 {BFD_RELOC_NDS32_PLT_GOTREL_LO20
, R_NDS32_PLT_GOTREL_LO20
},
2780 {BFD_RELOC_NDS32_SDA12S2_DP
, R_NDS32_SDA12S2_DP_RELA
},
2781 {BFD_RELOC_NDS32_SDA12S2_SP
, R_NDS32_SDA12S2_SP_RELA
},
2782 {BFD_RELOC_NDS32_LO12S2_DP
, R_NDS32_LO12S2_DP_RELA
},
2783 {BFD_RELOC_NDS32_LO12S2_SP
, R_NDS32_LO12S2_SP_RELA
},
2784 {BFD_RELOC_NDS32_SDA16S3
, R_NDS32_SDA16S3_RELA
},
2785 {BFD_RELOC_NDS32_SDA17S2
, R_NDS32_SDA17S2_RELA
},
2786 {BFD_RELOC_NDS32_SDA18S1
, R_NDS32_SDA18S1_RELA
},
2787 {BFD_RELOC_NDS32_SDA19S0
, R_NDS32_SDA19S0_RELA
},
2788 {BFD_RELOC_NDS32_SDA_FP7U2_RELA
, R_NDS32_SDA_FP7U2_RELA
},
2789 {BFD_RELOC_NDS32_DWARF2_OP1
, R_NDS32_DWARF2_OP1_RELA
},
2790 {BFD_RELOC_NDS32_DWARF2_OP2
, R_NDS32_DWARF2_OP2_RELA
},
2791 {BFD_RELOC_NDS32_DWARF2_LEB
, R_NDS32_DWARF2_LEB_RELA
},
2792 {BFD_RELOC_NDS32_UPDATE_TA
, R_NDS32_UPDATE_TA_RELA
},
2793 {BFD_RELOC_NDS32_GOT_SUFF
, R_NDS32_GOT_SUFF
},
2794 {BFD_RELOC_NDS32_GOTOFF_SUFF
, R_NDS32_GOTOFF_SUFF
},
2795 {BFD_RELOC_NDS32_GOT15S2
, R_NDS32_GOT15S2_RELA
},
2796 {BFD_RELOC_NDS32_GOT17S2
, R_NDS32_GOT17S2_RELA
},
2797 {BFD_RELOC_NDS32_PTR
, R_NDS32_PTR
},
2798 {BFD_RELOC_NDS32_PTR_COUNT
, R_NDS32_PTR_COUNT
},
2799 {BFD_RELOC_NDS32_PLT_GOT_SUFF
, R_NDS32_PLT_GOT_SUFF
},
2800 {BFD_RELOC_NDS32_PTR_RESOLVED
, R_NDS32_PTR_RESOLVED
},
2801 {BFD_RELOC_NDS32_RELAX_ENTRY
, R_NDS32_RELAX_ENTRY
},
2802 {BFD_RELOC_NDS32_MULCALL_SUFF
, R_NDS32_MULCALL_SUFF
},
2803 {BFD_RELOC_NDS32_PLTBLOCK
, R_NDS32_PLTBLOCK
},
2804 {BFD_RELOC_NDS32_RELAX_REGION_BEGIN
, R_NDS32_RELAX_REGION_BEGIN
},
2805 {BFD_RELOC_NDS32_RELAX_REGION_END
, R_NDS32_RELAX_REGION_END
},
2806 {BFD_RELOC_NDS32_MINUEND
, R_NDS32_MINUEND
},
2807 {BFD_RELOC_NDS32_SUBTRAHEND
, R_NDS32_SUBTRAHEND
},
2808 {BFD_RELOC_NDS32_EMPTY
, R_NDS32_EMPTY
},
2810 {BFD_RELOC_NDS32_DIFF8
, R_NDS32_DIFF8
},
2811 {BFD_RELOC_NDS32_DIFF16
, R_NDS32_DIFF16
},
2812 {BFD_RELOC_NDS32_DIFF32
, R_NDS32_DIFF32
},
2813 {BFD_RELOC_NDS32_DIFF_ULEB128
, R_NDS32_DIFF_ULEB128
},
2814 {BFD_RELOC_NDS32_25_ABS
, R_NDS32_25_ABS_RELA
},
2815 {BFD_RELOC_NDS32_DATA
, R_NDS32_DATA
},
2816 {BFD_RELOC_NDS32_TRAN
, R_NDS32_TRAN
},
2817 {BFD_RELOC_NDS32_17IFC_PCREL
, R_NDS32_17IFC_PCREL_RELA
},
2818 {BFD_RELOC_NDS32_10IFCU_PCREL
, R_NDS32_10IFCU_PCREL_RELA
},
2819 {BFD_RELOC_NDS32_TLS_LE_HI20
, R_NDS32_TLS_LE_HI20
},
2820 {BFD_RELOC_NDS32_TLS_LE_LO12
, R_NDS32_TLS_LE_LO12
},
2821 {BFD_RELOC_NDS32_TLS_LE_ADD
, R_NDS32_TLS_LE_ADD
},
2822 {BFD_RELOC_NDS32_TLS_LE_LS
, R_NDS32_TLS_LE_LS
},
2823 {BFD_RELOC_NDS32_TLS_IE_HI20
, R_NDS32_TLS_IE_HI20
},
2824 {BFD_RELOC_NDS32_TLS_IE_LO12S2
, R_NDS32_TLS_IE_LO12S2
},
2825 {BFD_RELOC_NDS32_TLS_TPOFF
, R_NDS32_TLS_TPOFF
},
2826 {BFD_RELOC_NDS32_TLS_LE_20
, R_NDS32_TLS_LE_20
},
2827 {BFD_RELOC_NDS32_TLS_LE_15S0
, R_NDS32_TLS_LE_15S0
},
2828 {BFD_RELOC_NDS32_TLS_LE_15S1
, R_NDS32_TLS_LE_15S1
},
2829 {BFD_RELOC_NDS32_TLS_LE_15S2
, R_NDS32_TLS_LE_15S2
},
2834 static reloc_howto_type
*
2835 bfd_elf32_bfd_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2840 for (i
= 0; i
< ARRAY_SIZE (nds32_elf_howto_table
); i
++)
2841 if (nds32_elf_howto_table
[i
].name
!= NULL
2842 && strcasecmp (nds32_elf_howto_table
[i
].name
, r_name
) == 0)
2843 return &nds32_elf_howto_table
[i
];
2845 for (i
= 0; i
< ARRAY_SIZE (nds32_elf_relax_howto_table
); i
++)
2846 if (nds32_elf_relax_howto_table
[i
].name
!= NULL
2847 && strcasecmp (nds32_elf_relax_howto_table
[i
].name
, r_name
) == 0)
2848 return &nds32_elf_relax_howto_table
[i
];
2853 static reloc_howto_type
*
2854 bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code
)
2856 if (code
< R_NDS32_RELAX_ENTRY
)
2858 BFD_ASSERT (code
< ARRAY_SIZE (nds32_elf_howto_table
));
2859 return &nds32_elf_howto_table
[code
];
2863 BFD_ASSERT ((size_t) (code
- R_NDS32_RELAX_ENTRY
)
2864 < ARRAY_SIZE (nds32_elf_relax_howto_table
));
2865 return &nds32_elf_relax_howto_table
[code
- R_NDS32_RELAX_ENTRY
];
2869 static reloc_howto_type
*
2870 bfd_elf32_bfd_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2871 bfd_reloc_code_real_type code
)
2875 for (i
= 0; i
< ARRAY_SIZE (nds32_reloc_map
); i
++)
2877 if (nds32_reloc_map
[i
].bfd_reloc_val
== code
)
2878 return bfd_elf32_bfd_reloc_type_table_lookup
2879 (nds32_reloc_map
[i
].elf_reloc_val
);
2885 /* Set the howto pointer for an NDS32 ELF reloc. */
2888 nds32_info_to_howto_rel (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2889 Elf_Internal_Rela
*dst
)
2891 enum elf_nds32_reloc_type r_type
;
2893 r_type
= ELF32_R_TYPE (dst
->r_info
);
2894 if (r_type
> R_NDS32_GNU_VTENTRY
)
2896 /* xgettext:c-format */
2897 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2901 cache_ptr
->howto
= bfd_elf32_bfd_reloc_type_table_lookup (r_type
);
2905 nds32_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2906 Elf_Internal_Rela
*dst
)
2908 BFD_ASSERT ((ELF32_R_TYPE (dst
->r_info
) == R_NDS32_NONE
)
2909 || ((ELF32_R_TYPE (dst
->r_info
) > R_NDS32_GNU_VTENTRY
)
2910 && (ELF32_R_TYPE (dst
->r_info
) < R_NDS32_max
)));
2911 cache_ptr
->howto
= bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst
->r_info
));
2914 /* Support for core dump NOTE sections.
2915 Reference to include/linux/elfcore.h in Linux. */
2918 nds32_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2923 switch (note
->descsz
)
2926 /* Linux/NDS32 32-bit, ABI1 */
2929 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2932 elf_tdata (abfd
)->core
->pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2940 /* Linux/NDS32 32-bit */
2943 elf_tdata (abfd
)->core
->signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2946 elf_tdata (abfd
)->core
->pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
2957 /* Make a ".reg" section. */
2958 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2959 size
, note
->descpos
+ offset
);
2963 nds32_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2965 switch (note
->descsz
)
2970 /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */
2971 elf_tdata (abfd
)->core
->program
=
2972 _bfd_elfcore_strndup (abfd
, note
->descdata
+ 28, 16);
2973 elf_tdata (abfd
)->core
->command
=
2974 _bfd_elfcore_strndup (abfd
, note
->descdata
+ 44, 80);
2981 /* Note that for some reason, a spurious space is tacked
2982 onto the end of the args in some (at least one anyway)
2983 implementations, so strip it off if it exists. */
2985 char *command
= elf_tdata (abfd
)->core
->command
;
2986 int n
= strlen (command
);
2988 if (0 < n
&& command
[n
- 1] == ' ')
2989 command
[n
- 1] = '\0';
2995 /* Hook called by the linker routine which adds symbols from an object
2996 file. We must handle the special NDS32 section numbers here.
2997 We also keep watching for whether we need to create the sdata special
3001 nds32_elf_add_symbol_hook (bfd
*abfd
,
3002 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
3003 Elf_Internal_Sym
*sym
,
3004 const char **namep ATTRIBUTE_UNUSED
,
3005 flagword
*flagsp ATTRIBUTE_UNUSED
,
3006 asection
**secp
, bfd_vma
*valp
)
3008 switch (sym
->st_shndx
)
3011 /* Common symbols less than the GP size are automatically
3012 treated as SHN_MIPS_SCOMMON symbols. */
3013 if (sym
->st_size
> elf_gp_size (abfd
)
3014 || ELF_ST_TYPE (sym
->st_info
) == STT_TLS
)
3017 /* st_value is the alignemnt constraint.
3018 That might be its actual size if it is an array or structure. */
3019 switch (sym
->st_value
)
3022 *secp
= bfd_make_section_old_way (abfd
, ".scommon_b");
3025 *secp
= bfd_make_section_old_way (abfd
, ".scommon_h");
3028 *secp
= bfd_make_section_old_way (abfd
, ".scommon_w");
3031 *secp
= bfd_make_section_old_way (abfd
, ".scommon_d");
3037 (*secp
)->flags
|= SEC_IS_COMMON
;
3038 *valp
= sym
->st_size
;
3046 /* This function can figure out the best location for a base register to access
3047 data relative to this base register
3049 sda_d0: size of first DOUBLE WORD data section
3050 sda_w0: size of first WORD data section
3051 sda_h0: size of first HALF WORD data section
3052 sda_b : size of BYTE data section
3053 sda_hi: size of second HALF WORD data section
3054 sda_w1: size of second WORD data section
3055 sda_d1: size of second DOUBLE WORD data section
3057 offset (always positive) from the beginning of sda_d0 if OK
3058 a negative error value if fail
3060 these 7 sections have to be located back to back if exist
3061 a pass in 0 value for non-existing section */
3063 /* Due to the interpretation of simm15 field of load/store depending on
3064 data accessing size, the organization of base register relative data shall
3065 like the following figure
3066 -------------------------------------------
3067 | DOUBLE WORD sized data (range +/- 128K)
3068 -------------------------------------------
3069 | WORD sized data (range +/- 64K)
3070 -------------------------------------------
3071 | HALF WORD sized data (range +/- 32K)
3072 -------------------------------------------
3073 | BYTE sized data (range +/- 16K)
3074 -------------------------------------------
3075 | HALF WORD sized data (range +/- 32K)
3076 -------------------------------------------
3077 | WORD sized data (range +/- 64K)
3078 -------------------------------------------
3079 | DOUBLE WORD sized data (range +/- 128K)
3080 -------------------------------------------
3081 Its base register shall be set to access these data freely. */
3083 /* We have to figure out the SDA_BASE value, so that we can adjust the
3084 symbol value correctly. We look up the symbol _SDA_BASE_ in the output
3085 BFD. If we can't find it, we're stuck. We cache it in the ELF
3086 target data. We don't need to adjust the symbol value for an
3087 external symbol if we are producing relocatable output. */
3089 static asection
*sda_rela_sec
= NULL
;
3091 #define SDA_SECTION_NUM 10
3093 static bfd_reloc_status_type
3094 nds32_elf_final_sda_base (bfd
*output_bfd
, struct bfd_link_info
*info
,
3095 bfd_vma
*psb
, bfd_boolean add_symbol
)
3098 struct elf_nds32_link_hash_table
*table
;
3099 struct bfd_link_hash_entry
*h
, *h2
;
3100 long unsigned int total
= 0;
3102 h
= bfd_link_hash_lookup (info
->hash
, "_SDA_BASE_", FALSE
, FALSE
, TRUE
);
3103 if (!h
|| (h
->type
!= bfd_link_hash_defined
&& h
->type
!= bfd_link_hash_defweak
))
3105 asection
*first
= NULL
, *final
= NULL
, *temp
;
3107 /* The first section must be 4-byte aligned to promise _SDA_BASE_ being
3108 4 byte-aligned. Therefore, it has to set the first section ".data"
3110 static const char sec_name
[SDA_SECTION_NUM
][10] =
3112 ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b",
3113 ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d"
3117 if (output_bfd
->sections
== NULL
)
3119 *psb
= elf_gp (output_bfd
);
3120 return bfd_reloc_ok
;
3123 /* Get the first and final section. */
3124 while (i
< sizeof (sec_name
) / sizeof (sec_name
[0]))
3126 temp
= bfd_get_section_by_name (output_bfd
, sec_name
[i
]);
3127 if (temp
&& !first
&& (temp
->size
!= 0 || temp
->rawsize
!= 0))
3129 if (temp
&& (temp
->size
!= 0 || temp
->rawsize
!= 0))
3132 /* Summarize the sections in order to check if joining .bss. */
3133 if (temp
&& temp
->size
!= 0)
3134 total
+= temp
->size
;
3135 else if (temp
&& temp
->rawsize
!= 0)
3136 total
+= temp
->rawsize
;
3141 /* Check .bss size. */
3142 temp
= bfd_get_section_by_name (output_bfd
, ".bss");
3145 if (temp
->size
!= 0)
3146 total
+= temp
->size
;
3147 else if (temp
->rawsize
!= 0)
3148 total
+= temp
->rawsize
;
3150 if (total
< 0x80000)
3152 if (!first
&& (temp
->size
!= 0 || temp
->rawsize
!= 0))
3154 if ((temp
->size
!= 0 || temp
->rawsize
!= 0))
3161 /* The middle of data region. */
3162 sda_base
= final
->vma
/ 2 + final
->rawsize
/ 2 + first
->vma
/ 2;
3164 /* Find the section sda_base located. */
3166 while (i
< sizeof (sec_name
) / sizeof (sec_name
[0]))
3168 final
= bfd_get_section_by_name (output_bfd
, sec_name
[i
]);
3169 if (final
&& (final
->size
!= 0 || final
->rawsize
!= 0)
3170 && sda_base
>= final
->vma
)
3181 /* There is not any data section in output bfd, and set _SDA_BASE_ in
3182 first output section. */
3183 first
= output_bfd
->sections
;
3184 while (first
&& first
->size
== 0 && first
->rawsize
== 0)
3185 first
= first
->next
;
3188 *psb
= elf_gp (output_bfd
);
3189 return bfd_reloc_ok
;
3191 sda_base
= first
->vma
+ first
->rawsize
;
3194 sda_base
-= first
->vma
;
3195 sda_base
= sda_base
& (~7);
3197 if (!_bfd_generic_link_add_one_symbol
3198 (info
, output_bfd
, "_SDA_BASE_", BSF_GLOBAL
| BSF_WEAK
, first
,
3199 (bfd_vma
) sda_base
, (const char *) NULL
, FALSE
,
3200 get_elf_backend_data (output_bfd
)->collect
, &h
))
3203 sda_rela_sec
= first
;
3205 table
= nds32_elf_hash_table (info
);
3206 relax_fp_as_gp
= table
->relax_fp_as_gp
;
3209 h2
= bfd_link_hash_lookup (info
->hash
, FP_BASE_NAME
,
3210 FALSE
, FALSE
, FALSE
);
3211 /* Define a weak FP_BASE_NAME here to prevent the undefined symbol.
3212 And set FP equal to SDA_BASE to do relaxation for
3213 la $fp, _FP_BASE_. */
3214 if (!_bfd_generic_link_add_one_symbol
3215 (info
, output_bfd
, FP_BASE_NAME
, BSF_GLOBAL
| BSF_WEAK
,
3216 first
, (bfd_vma
) sda_base
, (const char *) NULL
,
3217 FALSE
, get_elf_backend_data (output_bfd
)->collect
, &h2
))
3227 elf_gp (output_bfd
) = (h
->u
.def
.value
3228 + h
->u
.def
.section
->output_section
->vma
3229 + h
->u
.def
.section
->output_offset
);
3233 _bfd_error_handler (_("error: can't find symbol: %s"), "_SDA_BASE_");
3234 return bfd_reloc_dangerous
;
3238 *psb
= h
->u
.def
.value
+ h
->u
.def
.section
->output_section
->vma
3239 + h
->u
.def
.section
->output_offset
;
3240 return bfd_reloc_ok
;
3244 /* Return size of a PLT entry. */
3245 #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE
3248 /* Create an entry in an nds32 ELF linker hash table. */
3250 static struct bfd_hash_entry
*
3251 nds32_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
3252 struct bfd_hash_table
*table
,
3255 struct elf_nds32_link_hash_entry
*ret
;
3257 ret
= (struct elf_nds32_link_hash_entry
*) entry
;
3259 /* Allocate the structure if it has not already been allocated by a
3262 ret
= (struct elf_nds32_link_hash_entry
*)
3263 bfd_hash_allocate (table
, sizeof (struct elf_nds32_link_hash_entry
));
3266 return (struct bfd_hash_entry
*) ret
;
3268 /* Call the allocation method of the superclass. */
3269 ret
= (struct elf_nds32_link_hash_entry
*)
3270 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry
*) ret
, table
, string
);
3274 struct elf_nds32_link_hash_entry
*eh
;
3276 eh
= (struct elf_nds32_link_hash_entry
*) ret
;
3277 eh
->dyn_relocs
= NULL
;
3278 eh
->tls_type
= GOT_UNKNOWN
;
3281 return (struct bfd_hash_entry
*) ret
;
3284 /* Create an nds32 ELF linker hash table. */
3286 static struct bfd_link_hash_table
*
3287 nds32_elf_link_hash_table_create (bfd
*abfd
)
3289 struct elf_nds32_link_hash_table
*ret
;
3291 bfd_size_type amt
= sizeof (struct elf_nds32_link_hash_table
);
3293 ret
= (struct elf_nds32_link_hash_table
*) bfd_zmalloc (amt
);
3298 if (!_bfd_elf_link_hash_table_init (&ret
->root
, abfd
,
3299 nds32_elf_link_hash_newfunc
,
3300 sizeof (struct elf_nds32_link_hash_entry
),
3307 return &ret
->root
.root
;
3310 /* Create dynamic sections when linking against a dynamic object. */
3313 nds32_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
3315 struct elf_nds32_link_hash_table
*htab
;
3316 flagword flags
, pltflags
;
3317 register asection
*s
;
3318 const struct elf_backend_data
*bed
;
3319 int ptralign
= 2; /* 32-bit */
3321 bed
= get_elf_backend_data (abfd
);
3323 htab
= nds32_elf_hash_table (info
);
3325 /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
3326 .rel[a].bss sections. */
3328 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3329 | SEC_LINKER_CREATED
);
3332 pltflags
|= SEC_CODE
;
3333 if (bed
->plt_not_loaded
)
3334 pltflags
&= ~(SEC_LOAD
| SEC_HAS_CONTENTS
);
3335 if (bed
->plt_readonly
)
3336 pltflags
|= SEC_READONLY
;
3338 s
= bfd_make_section (abfd
, ".plt");
3339 htab
->root
.splt
= s
;
3341 || !bfd_set_section_flags (abfd
, s
, pltflags
)
3342 || !bfd_set_section_alignment (abfd
, s
, bed
->plt_alignment
))
3345 if (bed
->want_plt_sym
)
3347 /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
3349 struct bfd_link_hash_entry
*bh
= NULL
;
3350 struct elf_link_hash_entry
*h
;
3352 if (!(_bfd_generic_link_add_one_symbol
3353 (info
, abfd
, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL
, s
,
3354 (bfd_vma
) 0, (const char *) NULL
, FALSE
,
3355 get_elf_backend_data (abfd
)->collect
, &bh
)))
3358 h
= (struct elf_link_hash_entry
*) bh
;
3360 h
->type
= STT_OBJECT
;
3362 if (bfd_link_pic (info
) && !bfd_elf_link_record_dynamic_symbol (info
, h
))
3366 s
= bfd_make_section (abfd
,
3367 bed
->default_use_rela_p
? ".rela.plt" : ".rel.plt");
3368 htab
->root
.srelplt
= s
;
3370 || !bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
3371 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3374 if (htab
->root
.sgot
== NULL
&& !_bfd_elf_create_got_section (abfd
, info
))
3378 const char *secname
;
3383 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
3385 secflags
= bfd_get_section_flags (abfd
, sec
);
3386 if ((secflags
& (SEC_DATA
| SEC_LINKER_CREATED
))
3387 || ((secflags
& SEC_HAS_CONTENTS
) != SEC_HAS_CONTENTS
))
3389 secname
= bfd_get_section_name (abfd
, sec
);
3390 relname
= (char *) bfd_malloc ((bfd_size_type
) strlen (secname
) + 6);
3391 strcpy (relname
, ".rela");
3392 strcat (relname
, secname
);
3393 if (bfd_get_section_by_name (abfd
, secname
))
3395 s
= bfd_make_section (abfd
, relname
);
3397 || !bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
3398 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3403 if (bed
->want_dynbss
)
3405 /* The .dynbss section is a place to put symbols which are defined
3406 by dynamic objects, are referenced by regular objects, and are
3407 not functions. We must allocate space for them in the process
3408 image and use a R_*_COPY reloc to tell the dynamic linker to
3409 initialize them at run time. The linker script puts the .dynbss
3410 section into the .bss section of the final image. */
3411 s
= bfd_make_section (abfd
, ".dynbss");
3414 || !bfd_set_section_flags (abfd
, s
, SEC_ALLOC
| SEC_LINKER_CREATED
))
3416 /* The .rel[a].bss section holds copy relocs. This section is not
3417 normally needed. We need to create it here, though, so that the
3418 linker will map it to an output section. We can't just create it
3419 only if we need it, because we will not know whether we need it
3420 until we have seen all the input files, and the first time the
3421 main linker code calls BFD after examining all the input files
3422 (size_dynamic_sections) the input sections have already been
3423 mapped to the output sections. If the section turns out not to
3424 be needed, we can discard it later. We will never need this
3425 section when generating a shared object, since they do not use
3427 if (!bfd_link_pic (info
))
3429 s
= bfd_make_section (abfd
, (bed
->default_use_rela_p
3430 ? ".rela.bss" : ".rel.bss"));
3433 || !bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
3434 || !bfd_set_section_alignment (abfd
, s
, ptralign
))
3442 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3444 nds32_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3445 struct elf_link_hash_entry
*dir
,
3446 struct elf_link_hash_entry
*ind
)
3448 struct elf_nds32_link_hash_entry
*edir
, *eind
;
3450 edir
= (struct elf_nds32_link_hash_entry
*) dir
;
3451 eind
= (struct elf_nds32_link_hash_entry
*) ind
;
3453 if (eind
->dyn_relocs
!= NULL
)
3455 if (edir
->dyn_relocs
!= NULL
)
3457 struct elf_dyn_relocs
**pp
;
3458 struct elf_dyn_relocs
*p
;
3460 if (ind
->root
.type
== bfd_link_hash_indirect
)
3463 /* Add reloc counts against the weak sym to the strong sym
3464 list. Merge any entries against the same section. */
3465 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
;)
3467 struct elf_dyn_relocs
*q
;
3469 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3470 if (q
->sec
== p
->sec
)
3472 q
->pc_count
+= p
->pc_count
;
3473 q
->count
+= p
->count
;
3480 *pp
= edir
->dyn_relocs
;
3483 edir
->dyn_relocs
= eind
->dyn_relocs
;
3484 eind
->dyn_relocs
= NULL
;
3487 _bfd_elf_link_hash_copy_indirect (info
, dir
, ind
);
3490 /* Find dynamic relocs for H that apply to read-only sections. */
3493 readonly_dynrelocs (struct elf_link_hash_entry
*h
)
3495 struct elf_dyn_relocs
*p
;
3497 for (p
= elf32_nds32_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3499 asection
*s
= p
->sec
->output_section
;
3501 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
3507 /* Adjust a symbol defined by a dynamic object and referenced by a
3508 regular object. The current definition is in some section of the
3509 dynamic object, but we're not including those sections. We have to
3510 change the definition to something the rest of the link can
3514 nds32_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
3515 struct elf_link_hash_entry
*h
)
3517 struct elf_nds32_link_hash_table
*htab
;
3520 unsigned int power_of_two
;
3522 dynobj
= elf_hash_table (info
)->dynobj
;
3524 /* Make sure we know what is going on here. */
3525 BFD_ASSERT (dynobj
!= NULL
3528 || (h
->def_dynamic
&& h
->ref_regular
&& !h
->def_regular
)));
3531 /* If this is a function, put it in the procedure linkage table. We
3532 will fill in the contents of the procedure linkage table later,
3533 when we know the address of the .got section. */
3534 if (h
->type
== STT_FUNC
|| h
->needs_plt
)
3536 if (!bfd_link_pic (info
)
3539 && h
->root
.type
!= bfd_link_hash_undefweak
3540 && h
->root
.type
!= bfd_link_hash_undefined
)
3542 /* This case can occur if we saw a PLT reloc in an input
3543 file, but the symbol was never referred to by a dynamic
3544 object. In such a case, we don't actually need to build
3545 a procedure linkage table, and we can just do a PCREL
3547 h
->plt
.offset
= (bfd_vma
) - 1;
3554 h
->plt
.offset
= (bfd_vma
) - 1;
3556 /* If this is a weak symbol, and there is a real definition, the
3557 processor independent code will have arranged for us to see the
3558 real definition first, and we can just use the same value. */
3559 if (h
->is_weakalias
)
3561 struct elf_link_hash_entry
*def
= weakdef (h
);
3562 BFD_ASSERT (def
->root
.type
== bfd_link_hash_defined
);
3563 h
->root
.u
.def
.section
= def
->root
.u
.def
.section
;
3564 h
->root
.u
.def
.value
= def
->root
.u
.def
.value
;
3568 /* This is a reference to a symbol defined by a dynamic object which
3569 is not a function. */
3571 /* If we are creating a shared library, we must presume that the
3572 only references to the symbol are via the global offset table.
3573 For such cases we need not do anything here; the relocations will
3574 be handled correctly by relocate_section. */
3575 if (bfd_link_pic (info
))
3578 /* If there are no references to this symbol that do not use the
3579 GOT, we don't need to generate a copy reloc. */
3580 if (!h
->non_got_ref
)
3583 /* If -z nocopyreloc was given, we won't generate them either. */
3584 if (0 && info
->nocopyreloc
)
3590 /* If we don't find any dynamic relocs in read-only sections, then
3591 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3592 if (0 && !readonly_dynrelocs (h
))
3598 /* We must allocate the symbol in our .dynbss section, which will
3599 become part of the .bss section of the executable. There will be
3600 an entry for this symbol in the .dynsym section. The dynamic
3601 object will contain position independent code, so all references
3602 from the dynamic object to this symbol will go through the global
3603 offset table. The dynamic linker will use the .dynsym entry to
3604 determine the address it must put in the global offset table, so
3605 both the dynamic object and the regular object will refer to the
3606 same memory location for the variable. */
3608 htab
= nds32_elf_hash_table (info
);
3610 BFD_ASSERT (s
!= NULL
);
3612 /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker
3613 to copy the initial value out of the dynamic object and into the
3614 runtime process image. We need to remember the offset into the
3615 .rela.bss section we are going to use. */
3616 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
3620 srel
= htab
->srelbss
;
3621 BFD_ASSERT (srel
!= NULL
);
3622 srel
->size
+= sizeof (Elf32_External_Rela
);
3626 /* We need to figure out the alignment required for this symbol. I
3627 have no idea how ELF linkers handle this. */
3628 power_of_two
= bfd_log2 (h
->size
);
3629 if (power_of_two
> 3)
3632 /* Apply the required alignment. */
3633 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
3634 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
3636 if (!bfd_set_section_alignment (dynobj
, s
, power_of_two
))
3640 /* Define the symbol as being at this point in the section. */
3641 h
->root
.u
.def
.section
= s
;
3642 h
->root
.u
.def
.value
= s
->size
;
3644 /* Increment the section size to make room for the symbol. */
3650 /* Allocate space in .plt, .got and associated reloc sections for
3654 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3656 struct bfd_link_info
*info
;
3657 struct elf_nds32_link_hash_table
*htab
;
3658 struct elf_nds32_link_hash_entry
*eh
;
3659 struct elf_dyn_relocs
*p
;
3661 if (h
->root
.type
== bfd_link_hash_indirect
)
3664 if (h
->root
.type
== bfd_link_hash_warning
)
3665 /* When warning symbols are created, they **replace** the "real"
3666 entry in the hash table, thus we never get to see the real
3667 symbol in a hash traversal. So look at it now. */
3668 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3670 info
= (struct bfd_link_info
*) inf
;
3671 htab
= nds32_elf_hash_table (info
);
3673 eh
= (struct elf_nds32_link_hash_entry
*) h
;
3675 if (htab
->root
.dynamic_sections_created
&& h
->plt
.refcount
> 0)
3677 /* Make sure this symbol is output as a dynamic symbol.
3678 Undefined weak syms won't yet be marked as dynamic. */
3679 if (h
->dynindx
== -1 && !h
->forced_local
)
3681 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
3685 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info
), h
))
3687 asection
*s
= htab
->root
.splt
;
3689 /* If this is the first .plt entry, make room for the special
3692 s
->size
+= PLT_ENTRY_SIZE
;
3694 h
->plt
.offset
= s
->size
;
3696 /* If this symbol is not defined in a regular file, and we are
3697 not generating a shared library, then set the symbol to this
3698 location in the .plt. This is required to make function
3699 pointers compare as equal between the normal executable and
3700 the shared library. */
3701 if (!bfd_link_pic (info
) && !h
->def_regular
)
3703 h
->root
.u
.def
.section
= s
;
3704 h
->root
.u
.def
.value
= h
->plt
.offset
;
3707 /* Make room for this entry. */
3708 s
->size
+= PLT_ENTRY_SIZE
;
3710 /* We also need to make an entry in the .got.plt section, which
3711 will be placed in the .got section by the linker script. */
3712 htab
->root
.sgotplt
->size
+= 4;
3714 /* We also need to make an entry in the .rel.plt section. */
3715 htab
->root
.srelplt
->size
+= sizeof (Elf32_External_Rela
);
3719 h
->plt
.offset
= (bfd_vma
) - 1;
3725 h
->plt
.offset
= (bfd_vma
) - 1;
3729 if (h
->got
.refcount
> 0)
3733 int tls_type
= elf32_nds32_hash_entry (h
)->tls_type
;
3735 /* Make sure this symbol is output as a dynamic symbol.
3736 Undefined weak syms won't yet be marked as dynamic. */
3737 if (h
->dynindx
== -1 && !h
->forced_local
)
3739 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
3743 s
= htab
->root
.sgot
;
3744 h
->got
.offset
= s
->size
;
3746 if (tls_type
== GOT_UNKNOWN
)
3748 else if (tls_type
== GOT_NORMAL
3749 || tls_type
== GOT_TLS_IE
)
3750 /* Need a GOT slot. */
3753 dyn
= htab
->root
.dynamic_sections_created
;
3754 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
))
3755 htab
->root
.srelgot
->size
+= sizeof (Elf32_External_Rela
);
3758 h
->got
.offset
= (bfd_vma
) - 1;
3760 if (eh
->dyn_relocs
== NULL
)
3763 /* In the shared -Bsymbolic case, discard space allocated for
3764 dynamic pc-relative relocs against symbols which turn out to be
3765 defined in regular objects. For the normal shared case, discard
3766 space for pc-relative relocs that have become local due to symbol
3767 visibility changes. */
3769 if (bfd_link_pic (info
))
3771 if (h
->def_regular
&& (h
->forced_local
|| info
->symbolic
))
3773 struct elf_dyn_relocs
**pp
;
3775 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
;)
3777 p
->count
-= p
->pc_count
;
3788 /* For the non-shared case, discard space for relocs against
3789 symbols which turn out to need copy relocs or are not dynamic. */
3794 || (htab
->root
.dynamic_sections_created
3795 && (h
->root
.type
== bfd_link_hash_undefweak
3796 || h
->root
.type
== bfd_link_hash_undefined
))))
3798 /* Make sure this symbol is output as a dynamic symbol.
3799 Undefined weak syms won't yet be marked as dynamic. */
3800 if (h
->dynindx
== -1 && !h
->forced_local
)
3802 if (!bfd_elf_link_record_dynamic_symbol (info
, h
))
3806 /* If that succeeded, we know we'll be keeping all the
3808 if (h
->dynindx
!= -1)
3812 eh
->dyn_relocs
= NULL
;
3817 /* Finally, allocate space. */
3818 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3820 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
3821 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3827 /* Set DF_TEXTREL if we find any dynamic relocs that apply to
3828 read-only sections. */
3831 maybe_set_textrel (struct elf_link_hash_entry
*h
, void *info_p
)
3835 if (h
->root
.type
== bfd_link_hash_indirect
)
3838 sec
= readonly_dynrelocs (h
);
3841 struct bfd_link_info
*info
= (struct bfd_link_info
*) info_p
;
3843 info
->flags
|= DF_TEXTREL
;
3844 info
->callbacks
->minfo
3845 (_("%pB: dynamic relocation against `%pT' in read-only section `%pA'\n"),
3846 sec
->owner
, h
->root
.root
.string
, sec
);
3848 /* Not an error, just cut short the traversal. */
3854 /* Set the sizes of the dynamic sections. */
3857 nds32_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3858 struct bfd_link_info
*info
)
3860 struct elf_nds32_link_hash_table
*htab
;
3866 htab
= nds32_elf_hash_table (info
);
3867 dynobj
= htab
->root
.dynobj
;
3868 BFD_ASSERT (dynobj
!= NULL
);
3870 if (htab
->root
.dynamic_sections_created
)
3872 /* Set the contents of the .interp section to the interpreter. */
3873 if (bfd_link_executable (info
) && !info
->nointerp
)
3875 s
= bfd_get_section_by_name (dynobj
, ".interp");
3876 BFD_ASSERT (s
!= NULL
);
3877 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3878 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3882 /* Set up .got offsets for local syms, and space for local dynamic
3884 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link
.next
)
3886 bfd_signed_vma
*local_got
;
3887 bfd_signed_vma
*end_local_got
;
3888 bfd_size_type locsymcount
;
3889 Elf_Internal_Shdr
*symtab_hdr
;
3892 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
3895 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3897 struct elf_dyn_relocs
*p
;
3899 for (p
= ((struct elf_dyn_relocs
*)
3900 elf_section_data (s
)->local_dynrel
);
3901 p
!= NULL
; p
= p
->next
)
3903 if (!bfd_is_abs_section (p
->sec
)
3904 && bfd_is_abs_section (p
->sec
->output_section
))
3906 /* Input section has been discarded, either because
3907 it is a copy of a linkonce section or due to
3908 linker script /DISCARD/, so we'll be discarding
3911 else if (p
->count
!= 0)
3913 srel
= elf_section_data (p
->sec
)->sreloc
;
3914 srel
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3915 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
3916 info
->flags
|= DF_TEXTREL
;
3921 local_got
= elf_local_got_refcounts (ibfd
);
3925 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
3926 locsymcount
= symtab_hdr
->sh_info
;
3927 end_local_got
= local_got
+ locsymcount
;
3928 s
= htab
->root
.sgot
;
3929 srel
= htab
->root
.srelgot
;
3930 for (; local_got
< end_local_got
; ++local_got
)
3934 *local_got
= s
->size
;
3936 if (bfd_link_pic (info
))
3937 srel
->size
+= sizeof (Elf32_External_Rela
);
3940 *local_got
= (bfd_vma
) - 1;
3944 /* Allocate global sym .plt and .got entries, and space for global
3945 sym dynamic relocs. */
3946 elf_link_hash_traverse (&htab
->root
, allocate_dynrelocs
, (void *) info
);
3948 /* We now have determined the sizes of the various dynamic sections.
3949 Allocate memory for them. */
3951 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3953 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3956 if (s
== htab
->root
.splt
)
3958 /* Strip this section if we don't need it; see the
3961 else if (s
== htab
->root
.sgot
)
3963 got_size
+= s
->size
;
3965 else if (s
== htab
->root
.sgotplt
)
3967 got_size
+= s
->size
;
3969 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
3971 if (s
->size
!= 0 && s
!= htab
->root
.srelplt
)
3974 /* We use the reloc_count field as a counter if we need
3975 to copy relocs into the output file. */
3980 /* It's not one of our sections, so don't allocate space. */
3986 /* If we don't need this section, strip it from the
3987 output file. This is mostly to handle .rela.bss and
3988 .rela.plt. We must create both sections in
3989 create_dynamic_sections, because they must be created
3990 before the linker maps input sections to output
3991 sections. The linker does that before
3992 adjust_dynamic_symbol is called, and it is that
3993 function which decides whether anything needs to go
3994 into these sections. */
3995 s
->flags
|= SEC_EXCLUDE
;
3999 /* Allocate memory for the section contents. We use bfd_zalloc
4000 here in case unused entries are not reclaimed before the
4001 section's contents are written out. This should not happen,
4002 but this way if it does, we get a R_NDS32_NONE reloc instead
4004 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->size
);
4005 if (s
->contents
== NULL
)
4010 if (htab
->root
.dynamic_sections_created
)
4012 /* Add some entries to the .dynamic section. We fill in the
4013 values later, in nds32_elf_finish_dynamic_sections, but we
4014 must add the entries now so that we get the correct size for
4015 the .dynamic section. The DT_DEBUG entry is filled in by the
4016 dynamic linker and used by the debugger. */
4017 #define add_dynamic_entry(TAG, VAL) \
4018 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4020 if (!bfd_link_pic (info
))
4022 if (!add_dynamic_entry (DT_DEBUG
, 0))
4026 if (htab
->root
.splt
->size
!= 0)
4028 if (!add_dynamic_entry (DT_PLTGOT
, 0)
4029 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
4030 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
4031 || !add_dynamic_entry (DT_JMPREL
, 0))
4037 if (!add_dynamic_entry (DT_RELA
, 0)
4038 || !add_dynamic_entry (DT_RELASZ
, 0)
4039 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
4042 /* If any dynamic relocs apply to a read-only section,
4043 then we need a DT_TEXTREL entry. */
4044 if ((info
->flags
& DF_TEXTREL
) == 0)
4045 elf_link_hash_traverse (&htab
->root
, maybe_set_textrel
,
4048 if ((info
->flags
& DF_TEXTREL
) != 0)
4050 if (!add_dynamic_entry (DT_TEXTREL
, 0))
4055 #undef add_dynamic_entry
4060 static bfd_reloc_status_type
4061 nds32_relocate_contents (reloc_howto_type
*howto
, bfd
*input_bfd
,
4062 bfd_vma relocation
, bfd_byte
*location
)
4066 bfd_reloc_status_type flag
;
4067 unsigned int rightshift
= howto
->rightshift
;
4068 unsigned int bitpos
= howto
->bitpos
;
4070 /* If the size is negative, negate RELOCATION. This isn't very
4072 if (howto
->size
< 0)
4073 relocation
= -relocation
;
4075 /* Get the value we are going to relocate. */
4076 size
= bfd_get_reloc_size (howto
);
4083 return bfd_reloc_ok
;
4085 x
= bfd_getb16 (location
);
4088 x
= bfd_getb32 (location
);
4092 /* Check for overflow. FIXME: We may drop bits during the addition
4093 which we don't check for. We must either check at every single
4094 operation, which would be tedious, or we must do the computations
4095 in a type larger than bfd_vma, which would be inefficient. */
4096 flag
= bfd_reloc_ok
;
4097 if (howto
->complain_on_overflow
!= complain_overflow_dont
)
4099 bfd_vma addrmask
, fieldmask
, signmask
, ss
;
4102 /* Get the values to be added together. For signed and unsigned
4103 relocations, we assume that all values should be truncated to
4104 the size of an address. For bitfields, all the bits matter.
4105 See also bfd_check_overflow. */
4106 fieldmask
= N_ONES (howto
->bitsize
);
4107 signmask
= ~fieldmask
;
4108 addrmask
= N_ONES (bfd_arch_bits_per_address (input_bfd
)) | fieldmask
;
4109 a
= (relocation
& addrmask
) >> rightshift
;
4110 b
= (x
& howto
->src_mask
& addrmask
) >> bitpos
;
4112 switch (howto
->complain_on_overflow
)
4114 case complain_overflow_signed
:
4115 /* If any sign bits are set, all sign bits must be set.
4116 That is, A must be a valid negative address after
4118 signmask
= ~(fieldmask
>> 1);
4121 case complain_overflow_bitfield
:
4122 /* Much like the signed check, but for a field one bit
4123 wider. We allow a bitfield to represent numbers in the
4124 range -2**n to 2**n-1, where n is the number of bits in the
4125 field. Note that when bfd_vma is 32 bits, a 32-bit reloc
4126 can't overflow, which is exactly what we want. */
4128 if (ss
!= 0 && ss
!= ((addrmask
>> rightshift
) & signmask
))
4129 flag
= bfd_reloc_overflow
;
4131 /* We only need this next bit of code if the sign bit of B
4132 is below the sign bit of A. This would only happen if
4133 SRC_MASK had fewer bits than BITSIZE. Note that if
4134 SRC_MASK has more bits than BITSIZE, we can get into
4135 trouble; we would need to verify that B is in range, as
4136 we do for A above. */
4137 ss
= ((~howto
->src_mask
) >> 1) & howto
->src_mask
;
4140 /* Set all the bits above the sign bit. */
4143 /* Now we can do the addition. */
4146 /* See if the result has the correct sign. Bits above the
4147 sign bit are junk now; ignore them. If the sum is
4148 positive, make sure we did not have all negative inputs;
4149 if the sum is negative, make sure we did not have all
4150 positive inputs. The test below looks only at the sign
4151 bits, and it really just
4152 SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM)
4154 We mask with addrmask here to explicitly allow an address
4155 wrap-around. The Linux kernel relies on it, and it is
4156 the only way to write assembler code which can run when
4157 loaded at a location 0x80000000 away from the location at
4158 which it is linked. */
4159 if (((~(a
^ b
)) & (a
^ sum
)) & signmask
& addrmask
)
4160 flag
= bfd_reloc_overflow
;
4164 case complain_overflow_unsigned
:
4165 /* Checking for an unsigned overflow is relatively easy:
4166 trim the addresses and add, and trim the result as well.
4167 Overflow is normally indicated when the result does not
4168 fit in the field. However, we also need to consider the
4169 case when, e.g., fieldmask is 0x7fffffff or smaller, an
4170 input is 0x80000000, and bfd_vma is only 32 bits; then we
4171 will get sum == 0, but there is an overflow, since the
4172 inputs did not fit in the field. Instead of doing a
4173 separate test, we can check for this by or-ing in the
4174 operands when testing for the sum overflowing its final
4176 sum
= (a
+ b
) & addrmask
;
4177 if ((a
| b
| sum
) & signmask
)
4178 flag
= bfd_reloc_overflow
;
4186 /* Put RELOCATION in the right bits. */
4187 relocation
>>= (bfd_vma
) rightshift
;
4188 relocation
<<= (bfd_vma
) bitpos
;
4190 /* Add RELOCATION to the right bits of X. */
4192 Because the relaxation may generate duplicate relocation at one address,
4193 an addition to immediate in the instruction may cause the relocation added
4195 This bug should be fixed in assembler, but a check is also needed here. */
4196 if (howto
->partial_inplace
)
4197 x
= ((x
& ~howto
->dst_mask
)
4198 | (((x
& howto
->src_mask
) + relocation
) & howto
->dst_mask
));
4200 x
= ((x
& ~howto
->dst_mask
) | ((relocation
) & howto
->dst_mask
));
4203 /* Put the relocated value back in the object file. */
4213 bfd_putb16 (x
, location
);
4216 bfd_putb32 (x
, location
);
4223 static bfd_reloc_status_type
4224 nds32_elf_final_link_relocate (reloc_howto_type
*howto
, bfd
*input_bfd
,
4225 asection
*input_section
, bfd_byte
*contents
,
4226 bfd_vma address
, bfd_vma value
, bfd_vma addend
)
4230 /* Sanity check the address. */
4231 if (address
> bfd_get_section_limit (input_bfd
, input_section
))
4232 return bfd_reloc_outofrange
;
4234 /* This function assumes that we are dealing with a basic relocation
4235 against a symbol. We want to compute the value of the symbol to
4236 relocate to. This is just VALUE, the value of the symbol, plus
4237 ADDEND, any addend associated with the reloc. */
4238 relocation
= value
+ addend
;
4240 /* If the relocation is PC relative, we want to set RELOCATION to
4241 the distance between the symbol (currently in RELOCATION) and the
4242 location we are relocating. Some targets (e.g., i386-aout)
4243 arrange for the contents of the section to be the negative of the
4244 offset of the location within the section; for such targets
4245 pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF)
4246 simply leave the contents of the section as zero; for such
4247 targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not
4248 need to subtract out the offset of the location within the
4249 section (which is just ADDRESS). */
4250 if (howto
->pc_relative
)
4252 relocation
-= (input_section
->output_section
->vma
4253 + input_section
->output_offset
);
4254 if (howto
->pcrel_offset
)
4255 relocation
-= address
;
4258 return nds32_relocate_contents (howto
, input_bfd
, relocation
,
4259 contents
+ address
);
4263 nds32_elf_output_symbol_hook (struct bfd_link_info
*info
,
4265 Elf_Internal_Sym
*elfsym ATTRIBUTE_UNUSED
,
4266 asection
*input_sec
,
4267 struct elf_link_hash_entry
*h ATTRIBUTE_UNUSED
)
4270 FILE *sym_ld_script
= NULL
;
4271 struct elf_nds32_link_hash_table
*table
;
4273 table
= nds32_elf_hash_table (info
);
4274 sym_ld_script
= table
->sym_ld_script
;
4278 if (!h
|| !name
|| *name
== '\0')
4281 if (input_sec
->flags
& SEC_EXCLUDE
)
4284 if (!check_start_export_sym
)
4286 fprintf (sym_ld_script
, "SECTIONS\n{\n");
4287 check_start_export_sym
= 1;
4290 if (h
->root
.type
== bfd_link_hash_defined
4291 || h
->root
.type
== bfd_link_hash_defweak
)
4293 if (!h
->root
.u
.def
.section
->output_section
)
4296 if (bfd_is_const_section (input_sec
))
4297 source
= input_sec
->name
;
4299 source
= input_sec
->owner
->filename
;
4301 fprintf (sym_ld_script
, "\t%s = 0x%08lx;\t /* %s */\n",
4302 h
->root
.root
.string
,
4303 (long) (h
->root
.u
.def
.value
4304 + h
->root
.u
.def
.section
->output_section
->vma
4305 + h
->root
.u
.def
.section
->output_offset
), source
);
4311 /* Relocate an NDS32/D ELF section.
4312 There is some attempt to make this function usable for many architectures,
4313 both for RELA and REL type relocs, if only to serve as a learning tool.
4315 The RELOCATE_SECTION function is called by the new ELF backend linker
4316 to handle the relocations for a section.
4318 The relocs are always passed as Rela structures; if the section
4319 actually uses Rel structures, the r_addend field will always be
4322 This function is responsible for adjust the section contents as
4323 necessary, and (if using Rela relocs and generating a
4324 relocatable output file) adjusting the reloc addend as
4327 This function does not have to worry about setting the reloc
4328 address or the reloc symbol index.
4330 LOCAL_SYMS is a pointer to the swapped in local symbols.
4332 LOCAL_SECTIONS is an array giving the section in the input file
4333 corresponding to the st_shndx field of each local symbol.
4335 The global hash table entry for the global symbols can be found
4336 via elf_sym_hashes (input_bfd).
4338 When generating relocatable output, this function must handle
4339 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4340 going to be the section symbol corresponding to the output
4341 section, which means that the addend must be adjusted
4345 dtpoff_base (struct bfd_link_info
*info
)
4347 /* If tls_sec is NULL, we should have signalled an error already. */
4348 if (elf_hash_table (info
)->tls_sec
== NULL
)
4350 return elf_hash_table (info
)->tls_sec
->vma
;
4354 nds32_elf_relocate_section (bfd
* output_bfd ATTRIBUTE_UNUSED
,
4355 struct bfd_link_info
* info
,
4357 asection
* input_section
,
4358 bfd_byte
* contents
,
4359 Elf_Internal_Rela
* relocs
,
4360 Elf_Internal_Sym
* local_syms
,
4361 asection
** local_sections
)
4363 Elf_Internal_Shdr
*symtab_hdr
;
4364 struct elf_link_hash_entry
**sym_hashes
;
4365 Elf_Internal_Rela
*rel
, *relend
;
4366 bfd_boolean ret
= TRUE
; /* Assume success. */
4368 bfd_reloc_status_type r
;
4369 const char *errmsg
= NULL
;
4371 struct elf_nds32_link_hash_table
*htab
;
4373 bfd_vma
*local_got_offsets
;
4374 asection
*sgot
, *splt
, *sreloc
;
4375 bfd_vma high_address
;
4376 struct elf_nds32_link_hash_table
*table
;
4377 int eliminate_gc_relocs
;
4378 bfd_vma fpbase_addr
;
4380 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4381 sym_hashes
= elf_sym_hashes (input_bfd
);
4382 htab
= nds32_elf_hash_table (info
);
4383 high_address
= bfd_get_section_limit (input_bfd
, input_section
);
4385 dynobj
= htab
->root
.dynobj
;
4386 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4388 sgot
= htab
->root
.sgot
;
4389 splt
= htab
->root
.splt
;
4393 relend
= relocs
+ input_section
->reloc_count
;
4395 table
= nds32_elf_hash_table (info
);
4396 eliminate_gc_relocs
= table
->eliminate_gc_relocs
;
4397 /* By this time, we can adjust the value of _SDA_BASE_. */
4398 if ((!bfd_link_relocatable (info
)))
4400 is_SDA_BASE_set
= 1;
4401 r
= nds32_elf_final_sda_base (output_bfd
, info
, &gp
, TRUE
);
4402 if (r
!= bfd_reloc_ok
)
4406 if (is_ITB_BASE_set
== 0)
4408 /* Set the _ITB_BASE_. */
4409 if (!nds32_elf_ex9_itb_base (info
))
4411 _bfd_error_handler (_("%pB: error: cannot set %s"),
4412 output_bfd
, "_ITB_BASE_");
4413 bfd_set_error (bfd_error_bad_value
);
4417 if (table
->target_optimize
& NDS32_RELAX_JUMP_IFC_ON
)
4418 if (!nds32_elf_ifc_reloc ())
4419 _bfd_error_handler (_("error: IFC relocation error"));
4421 /* Relocation for .ex9.itable. */
4422 if (table
->target_optimize
& NDS32_RELAX_EX9_ON
4423 || (table
->ex9_import_file
&& table
->update_ex9_table
))
4424 nds32_elf_ex9_reloc_jmp (info
);
4426 /* Use gp as fp to prevent truncated fit. Because in relaxation time
4427 the fp value is set as gp, and it has be reverted for instruction
4429 fpbase_addr
= elf_gp (output_bfd
);
4431 for (rel
= relocs
; rel
< relend
; rel
++)
4433 enum elf_nds32_reloc_type r_type
;
4434 reloc_howto_type
*howto
= NULL
;
4435 unsigned long r_symndx
;
4436 struct elf_link_hash_entry
*h
= NULL
;
4437 Elf_Internal_Sym
*sym
= NULL
;
4441 /* We can't modify r_addend here as elf_link_input_bfd has an assert to
4442 ensure it's zero (we use REL relocs, not RELA). Therefore this
4443 should be assigning zero to `addend', but for clarity we use
4446 bfd_vma addend
= rel
->r_addend
;
4447 bfd_vma offset
= rel
->r_offset
;
4449 r_type
= ELF32_R_TYPE (rel
->r_info
);
4450 if (r_type
>= R_NDS32_max
)
4452 /* xgettext:c-format */
4453 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
4455 bfd_set_error (bfd_error_bad_value
);
4460 if (r_type
== R_NDS32_GNU_VTENTRY
4461 || r_type
== R_NDS32_GNU_VTINHERIT
4462 || r_type
== R_NDS32_NONE
4463 || r_type
== R_NDS32_RELA_GNU_VTENTRY
4464 || r_type
== R_NDS32_RELA_GNU_VTINHERIT
4465 || (r_type
>= R_NDS32_INSN16
&& r_type
<= R_NDS32_25_FIXED_RELA
)
4466 || r_type
== R_NDS32_DATA
4467 || r_type
== R_NDS32_TRAN
4468 || (r_type
>= R_NDS32_LONGCALL4
&& r_type
<= R_NDS32_LONGJUMP7
))
4471 /* If we enter the fp-as-gp region. Resolve the address
4473 if (ELF32_R_TYPE (rel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
4474 && (rel
->r_addend
& R_NDS32_RELAX_REGION_OMIT_FP_FLAG
))
4478 /* Distance to relocation of best fp-base is encoded in R_SYM. */
4479 dist
= rel
->r_addend
>> 16;
4480 fpbase_addr
= calculate_memory_address (input_bfd
, rel
+ dist
,
4481 local_syms
, symtab_hdr
);
4483 else if (ELF32_R_TYPE (rel
->r_info
) == R_NDS32_RELAX_REGION_END
4484 && (rel
->r_addend
& R_NDS32_RELAX_REGION_OMIT_FP_FLAG
))
4486 fpbase_addr
= elf_gp (output_bfd
);
4489 if (((r_type
>= R_NDS32_DWARF2_OP1_RELA
4490 && r_type
<= R_NDS32_DWARF2_LEB_RELA
)
4491 || r_type
>= R_NDS32_RELAX_ENTRY
) && !bfd_link_relocatable (info
))
4494 howto
= bfd_elf32_bfd_reloc_type_table_lookup (r_type
);
4495 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4497 /* This is a final link. */
4502 if (r_symndx
< symtab_hdr
->sh_info
)
4505 sym
= local_syms
+ r_symndx
;
4506 sec
= local_sections
[r_symndx
];
4508 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
4509 addend
= rel
->r_addend
;
4513 /* External symbol. */
4514 bfd_boolean warned
, ignored
, unresolved_reloc
;
4515 int symndx
= r_symndx
- symtab_hdr
->sh_info
;
4517 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
4518 r_symndx
, symtab_hdr
, sym_hashes
, h
, sec
,
4519 relocation
, unresolved_reloc
, warned
,
4522 /* la $fp, _FP_BASE_ is per-function (region).
4523 Handle it specially. */
4524 switch ((int) r_type
)
4526 case R_NDS32_SDA19S0_RELA
:
4527 case R_NDS32_SDA15S0_RELA
:
4528 case R_NDS32_20_RELA
:
4529 if (strcmp (elf_sym_hashes (input_bfd
)[symndx
]->root
.root
.string
,
4532 relocation
= fpbase_addr
;
4539 if (bfd_link_relocatable (info
))
4541 /* This is a relocatable link. We don't have to change
4542 anything, unless the reloc is against a section symbol,
4543 in which case we have to adjust according to where the
4544 section symbol winds up in the output section. */
4545 if (sym
!= NULL
&& ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
4546 rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
4551 /* Sanity check the address. */
4552 if (offset
> high_address
)
4554 r
= bfd_reloc_outofrange
;
4558 if ((r_type
>= R_NDS32_DWARF2_OP1_RELA
4559 && r_type
<= R_NDS32_DWARF2_LEB_RELA
)
4560 || r_type
>= R_NDS32_RELAX_ENTRY
)
4563 switch ((int) r_type
)
4565 case R_NDS32_GOTOFF
:
4566 /* Relocation is relative to the start of the global offset
4567 table (for ld24 rx, #uimm24), e.g. access at label+addend
4569 ld24 rx. #label@GOTOFF + addend
4571 case R_NDS32_GOTOFF_HI20
:
4572 case R_NDS32_GOTOFF_LO12
:
4573 case R_NDS32_GOTOFF_LO15
:
4574 case R_NDS32_GOTOFF_LO19
:
4575 BFD_ASSERT (sgot
!= NULL
);
4577 relocation
-= elf_gp (output_bfd
);
4580 case R_NDS32_9_PLTREL
:
4581 case R_NDS32_25_PLTREL
:
4582 /* Relocation is to the entry for this symbol in the
4583 procedure linkage table. */
4585 /* The native assembler will generate a 25_PLTREL reloc
4586 for a local symbol if you assemble a call from one
4587 section to another when using -K pic. */
4591 if (h
->forced_local
)
4594 /* We didn't make a PLT entry for this symbol. This
4595 happens when statically linking PIC code, or when
4596 using -Bsymbolic. */
4597 if (h
->plt
.offset
== (bfd_vma
) - 1)
4600 relocation
= (splt
->output_section
->vma
4601 + splt
->output_offset
+ h
->plt
.offset
);
4604 case R_NDS32_PLT_GOTREL_HI20
:
4605 case R_NDS32_PLT_GOTREL_LO12
:
4606 case R_NDS32_PLT_GOTREL_LO15
:
4607 case R_NDS32_PLT_GOTREL_LO19
:
4608 case R_NDS32_PLT_GOTREL_LO20
:
4609 if (h
== NULL
|| h
->forced_local
|| h
->plt
.offset
== (bfd_vma
) - 1)
4611 /* We didn't make a PLT entry for this symbol. This
4612 happens when statically linking PIC code, or when
4613 using -Bsymbolic. */
4614 relocation
-= elf_gp (output_bfd
);
4618 relocation
= (splt
->output_section
->vma
4619 + splt
->output_offset
+ h
->plt
.offset
);
4621 relocation
-= elf_gp (output_bfd
);
4624 case R_NDS32_PLTREL_HI20
:
4625 case R_NDS32_PLTREL_LO12
:
4627 /* Relocation is to the entry for this symbol in the
4628 procedure linkage table. */
4630 /* The native assembler will generate a 25_PLTREL reloc
4631 for a local symbol if you assemble a call from one
4632 section to another when using -K pic. */
4636 if (h
->forced_local
)
4639 if (h
->plt
.offset
== (bfd_vma
) - 1)
4640 /* We didn't make a PLT entry for this symbol. This
4641 happens when statically linking PIC code, or when
4642 using -Bsymbolic. */
4648 relocation
= (splt
->output_section
->vma
4649 + splt
->output_offset
4650 + h
->plt
.offset
+ 4)
4651 - (input_section
->output_section
->vma
4652 + input_section
->output_offset
4657 case R_NDS32_GOTPC20
:
4658 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4659 ld24 rx,#_GLOBAL_OFFSET_TABLE_ */
4660 relocation
= elf_gp (output_bfd
);
4663 case R_NDS32_GOTPC_HI20
:
4664 case R_NDS32_GOTPC_LO12
:
4666 /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation
4668 seth rx,#high(_GLOBAL_OFFSET_TABLE_)
4669 or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4672 seth rx,#shigh(_GLOBAL_OFFSET_TABLE_)
4673 add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4)
4675 relocation
= elf_gp (output_bfd
);
4676 relocation
-= (input_section
->output_section
->vma
4677 + input_section
->output_offset
+ rel
->r_offset
);
4683 case R_NDS32_GOT_HI20
:
4684 case R_NDS32_GOT_LO12
:
4685 case R_NDS32_GOT_LO15
:
4686 case R_NDS32_GOT_LO19
:
4687 /* Relocation is to the entry for this symbol in the global
4689 BFD_ASSERT (sgot
!= NULL
);
4696 off
= h
->got
.offset
;
4697 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4698 dyn
= htab
->root
.dynamic_sections_created
;
4699 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
,
4700 bfd_link_pic (info
),
4702 || (bfd_link_pic (info
)
4705 || h
->forced_local
) && h
->def_regular
))
4707 /* This is actually a static link, or it is a
4708 -Bsymbolic link and the symbol is defined
4709 locally, or the symbol was forced to be local
4710 because of a version file. We must initialize
4711 this entry in the global offset table. Since the
4712 offset must always be a multiple of 4, we use the
4713 least significant bit to record whether we have
4714 initialized it already.
4716 When doing a dynamic link, we create a .rela.got
4717 relocation entry to initialize the value. This
4718 is done in the finish_dynamic_symbol routine. */
4723 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
4727 relocation
= sgot
->output_section
->vma
+ sgot
->output_offset
+ off
4728 - elf_gp (output_bfd
);
4735 BFD_ASSERT (local_got_offsets
!= NULL
4736 && local_got_offsets
[r_symndx
] != (bfd_vma
) - 1);
4738 off
= local_got_offsets
[r_symndx
];
4740 /* The offset must always be a multiple of 4. We use
4741 the least significant bit to record whether we have
4742 already processed this entry. */
4747 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
4749 if (bfd_link_pic (info
))
4752 Elf_Internal_Rela outrel
;
4754 /* We need to generate a R_NDS32_RELATIVE reloc
4755 for the dynamic linker. */
4756 srelgot
= htab
->root
.srelgot
;
4757 BFD_ASSERT (srelgot
!= NULL
);
4759 outrel
.r_offset
= (elf_gp (output_bfd
)
4760 + sgot
->output_offset
+ off
);
4761 outrel
.r_info
= ELF32_R_INFO (0, R_NDS32_RELATIVE
);
4762 outrel
.r_addend
= relocation
;
4763 loc
= srelgot
->contents
;
4765 srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
4766 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4767 ++srelgot
->reloc_count
;
4769 local_got_offsets
[r_symndx
] |= 1;
4771 relocation
= sgot
->output_section
->vma
+ sgot
->output_offset
+ off
4772 - elf_gp (output_bfd
);
4777 case R_NDS32_16_RELA
:
4778 case R_NDS32_20_RELA
:
4779 case R_NDS32_5_RELA
:
4780 case R_NDS32_32_RELA
:
4781 case R_NDS32_9_PCREL_RELA
:
4782 case R_NDS32_WORD_9_PCREL_RELA
:
4783 case R_NDS32_10_UPCREL_RELA
:
4784 case R_NDS32_15_PCREL_RELA
:
4785 case R_NDS32_17_PCREL_RELA
:
4786 case R_NDS32_25_PCREL_RELA
:
4787 case R_NDS32_HI20_RELA
:
4788 case R_NDS32_LO12S3_RELA
:
4789 case R_NDS32_LO12S2_RELA
:
4790 case R_NDS32_LO12S2_DP_RELA
:
4791 case R_NDS32_LO12S2_SP_RELA
:
4792 case R_NDS32_LO12S1_RELA
:
4793 case R_NDS32_LO12S0_RELA
:
4794 case R_NDS32_LO12S0_ORI_RELA
:
4795 if (bfd_link_pic (info
) && r_symndx
!= 0
4796 && (input_section
->flags
& SEC_ALLOC
) != 0
4797 && (eliminate_gc_relocs
== 0
4798 || (sec
&& (sec
->flags
& SEC_EXCLUDE
) == 0))
4799 && ((r_type
!= R_NDS32_9_PCREL_RELA
4800 && r_type
!= R_NDS32_WORD_9_PCREL_RELA
4801 && r_type
!= R_NDS32_10_UPCREL_RELA
4802 && r_type
!= R_NDS32_15_PCREL_RELA
4803 && r_type
!= R_NDS32_17_PCREL_RELA
4804 && r_type
!= R_NDS32_25_PCREL_RELA
4805 && !(r_type
== R_NDS32_32_RELA
4806 && strcmp (input_section
->name
, ".eh_frame") == 0))
4807 || (h
!= NULL
&& h
->dynindx
!= -1
4808 && (!info
->symbolic
|| !h
->def_regular
))))
4810 Elf_Internal_Rela outrel
;
4811 bfd_boolean skip
, relocate
;
4814 /* When generating a shared object, these relocations
4815 are copied into the output file to be resolved at run
4822 name
= bfd_elf_string_from_elf_section
4823 (input_bfd
, elf_elfheader (input_bfd
)->e_shstrndx
,
4824 elf_section_data (input_section
)->rela
.hdr
->sh_name
);
4828 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
4829 && strcmp (bfd_get_section_name (input_bfd
,
4833 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4834 BFD_ASSERT (sreloc
!= NULL
);
4840 outrel
.r_offset
= _bfd_elf_section_offset (output_bfd
,
4844 if (outrel
.r_offset
== (bfd_vma
) - 1)
4846 else if (outrel
.r_offset
== (bfd_vma
) - 2)
4847 skip
= TRUE
, relocate
= TRUE
;
4848 outrel
.r_offset
+= (input_section
->output_section
->vma
4849 + input_section
->output_offset
);
4852 memset (&outrel
, 0, sizeof outrel
);
4853 else if (r_type
== R_NDS32_17_PCREL_RELA
4854 || r_type
== R_NDS32_15_PCREL_RELA
4855 || r_type
== R_NDS32_25_PCREL_RELA
)
4857 BFD_ASSERT (h
!= NULL
&& h
->dynindx
!= -1);
4858 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4859 outrel
.r_addend
= rel
->r_addend
;
4863 /* h->dynindx may be -1 if this symbol was marked to
4866 || ((info
->symbolic
|| h
->dynindx
== -1)
4870 outrel
.r_info
= ELF32_R_INFO (0, R_NDS32_RELATIVE
);
4871 outrel
.r_addend
= relocation
+ rel
->r_addend
;
4875 BFD_ASSERT (h
->dynindx
!= -1);
4876 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
4877 outrel
.r_addend
= rel
->r_addend
;
4881 loc
= sreloc
->contents
;
4882 loc
+= sreloc
->reloc_count
* sizeof (Elf32_External_Rela
);
4883 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
4884 ++sreloc
->reloc_count
;
4886 /* If this reloc is against an external symbol, we do
4887 not want to fiddle with the addend. Otherwise, we
4888 need to include the symbol value so that it becomes
4889 an addend for the dynamic reloc. */
4895 case R_NDS32_25_ABS_RELA
:
4896 if (bfd_link_pic (info
))
4899 (_("%pB: warning: %s unsupported in shared mode"),
4900 input_bfd
, "R_NDS32_25_ABS_RELA");
4905 case R_NDS32_9_PCREL
:
4906 r
= nds32_elf_do_9_pcrel_reloc (input_bfd
, howto
, input_section
,
4908 sec
, relocation
, addend
);
4913 Elf_Internal_Rela
*lorel
;
4915 /* We allow an arbitrary number of HI20 relocs before the
4916 LO12 reloc. This permits gcc to emit the HI and LO relocs
4918 for (lorel
= rel
+ 1;
4920 && ELF32_R_TYPE (lorel
->r_info
) == R_NDS32_HI20
); lorel
++)
4923 && (ELF32_R_TYPE (lorel
->r_info
) == R_NDS32_LO12S3
4924 || ELF32_R_TYPE (lorel
->r_info
) == R_NDS32_LO12S2
4925 || ELF32_R_TYPE (lorel
->r_info
) == R_NDS32_LO12S1
4926 || ELF32_R_TYPE (lorel
->r_info
) == R_NDS32_LO12S0
))
4928 nds32_elf_relocate_hi20 (input_bfd
, r_type
, rel
, lorel
,
4929 contents
, relocation
+ addend
);
4933 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
4934 contents
, offset
, relocation
,
4940 case R_NDS32_GOT17S2_RELA
:
4941 case R_NDS32_GOT15S2_RELA
:
4945 BFD_ASSERT (sgot
!= NULL
);
4951 off
= h
->got
.offset
;
4952 BFD_ASSERT (off
!= (bfd_vma
) - 1);
4954 dyn
= htab
->root
.dynamic_sections_created
;
4955 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL
4956 (dyn
, bfd_link_pic (info
), h
)
4957 || (bfd_link_pic (info
)
4963 /* This is actually a static link, or it is a
4964 -Bsymbolic link and the symbol is defined
4965 locally, or the symbol was forced to be local
4966 because of a version file. We must initialize
4967 this entry in the global offset table. Since the
4968 offset must always be a multiple of 4, we use the
4969 least significant bit to record whether we have
4970 initialized it already.
4972 When doing a dynamic link, we create a .rela.got
4973 relocation entry to initialize the value. This
4974 is done in the finish_dynamic_symbol routine. */
4979 bfd_put_32 (output_bfd
, relocation
,
4980 sgot
->contents
+ off
);
4989 BFD_ASSERT (local_got_offsets
!= NULL
4990 && local_got_offsets
[r_symndx
] != (bfd_vma
) - 1);
4992 off
= local_got_offsets
[r_symndx
];
4994 /* The offset must always be a multiple of 4. We use
4995 the least significant bit to record whether we have
4996 already processed this entry. */
5001 bfd_put_32 (output_bfd
, relocation
, sgot
->contents
+ off
);
5003 if (bfd_link_pic (info
))
5006 Elf_Internal_Rela outrel
;
5008 /* We need to generate a R_NDS32_RELATIVE reloc
5009 for the dynamic linker. */
5010 srelgot
= htab
->root
.srelgot
;
5011 BFD_ASSERT (srelgot
!= NULL
);
5013 outrel
.r_offset
= (elf_gp (output_bfd
)
5014 + sgot
->output_offset
+ off
);
5015 outrel
.r_info
= ELF32_R_INFO (0, R_NDS32_RELATIVE
);
5016 outrel
.r_addend
= relocation
;
5017 loc
= srelgot
->contents
;
5019 srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
5020 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5021 ++srelgot
->reloc_count
;
5023 local_got_offsets
[r_symndx
] |= 1;
5026 relocation
= sgot
->output_section
->vma
+ sgot
->output_offset
+ off
5027 - elf_gp (output_bfd
);
5029 if (relocation
& align
)
5031 /* Incorrect alignment. */
5033 (_("%pB: warning: unaligned access to GOT entry"), input_bfd
);
5035 r
= bfd_reloc_dangerous
;
5040 case R_NDS32_SDA16S3_RELA
:
5041 case R_NDS32_SDA15S3_RELA
:
5042 case R_NDS32_SDA15S3
:
5046 case R_NDS32_SDA17S2_RELA
:
5047 case R_NDS32_SDA15S2_RELA
:
5048 case R_NDS32_SDA12S2_SP_RELA
:
5049 case R_NDS32_SDA12S2_DP_RELA
:
5050 case R_NDS32_SDA15S2
:
5051 case R_NDS32_SDA_FP7U2_RELA
:
5055 case R_NDS32_SDA18S1_RELA
:
5056 case R_NDS32_SDA15S1_RELA
:
5057 case R_NDS32_SDA15S1
:
5061 case R_NDS32_SDA19S0_RELA
:
5062 case R_NDS32_SDA15S0_RELA
:
5063 case R_NDS32_SDA15S0
:
5067 BFD_ASSERT (sec
!= NULL
);
5069 /* If the symbol is in the abs section, the out_bfd will be null.
5070 This happens when the relocation has a symbol@GOTOFF. */
5071 r
= nds32_elf_final_sda_base (output_bfd
, info
, &gp
, FALSE
);
5072 if (r
!= bfd_reloc_ok
)
5075 (_("%pB: warning: relocate SDA_BASE failed"), input_bfd
);
5080 /* At this point `relocation' contains the object's
5082 if (r_type
== R_NDS32_SDA_FP7U2_RELA
)
5084 relocation
-= fpbase_addr
;
5088 /* Now it contains the offset from _SDA_BASE_. */
5090 /* Make sure alignment is correct. */
5092 if (relocation
& align
)
5094 /* Incorrect alignment. */
5096 /* xgettext:c-format */
5097 (_("%pB(%pA): warning: unaligned small data access"
5099 input_bfd
, input_section
, r_type
);
5106 case R_NDS32_17IFC_PCREL_RELA
:
5107 case R_NDS32_10IFCU_PCREL_RELA
:
5111 case R_NDS32_TLS_LE_HI20
:
5112 case R_NDS32_TLS_LE_LO12
:
5113 case R_NDS32_TLS_LE_20
:
5114 case R_NDS32_TLS_LE_15S0
:
5115 case R_NDS32_TLS_LE_15S1
:
5116 case R_NDS32_TLS_LE_15S2
:
5117 if (elf_hash_table (info
)->tls_sec
!= NULL
)
5118 relocation
-= (elf_hash_table (info
)->tls_sec
->vma
+ TP_OFFSET
);
5120 case R_NDS32_TLS_IE_HI20
:
5121 case R_NDS32_TLS_IE_LO12S2
:
5123 /* Relocation is to the entry for this symbol in the global
5125 unsigned int tls_type
;
5127 Elf_Internal_Rela outrel
;
5132 BFD_ASSERT (sgot
!= NULL
);
5137 off
= h
->got
.offset
;
5138 BFD_ASSERT (off
!= (bfd_vma
) - 1);
5139 dyn
= htab
->root
.dynamic_sections_created
;
5140 tls_type
= ((struct elf_nds32_link_hash_entry
*) h
)->tls_type
;
5141 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, bfd_link_pic (info
), h
)
5142 && (!bfd_link_pic (info
)
5143 || !SYMBOL_REFERENCES_LOCAL (info
, h
)))
5148 /* Never happen currently. */
5149 BFD_ASSERT (local_got_offsets
!= NULL
5150 && local_got_offsets
[r_symndx
] != (bfd_vma
) - 1);
5152 off
= local_got_offsets
[r_symndx
];
5154 tls_type
= elf32_nds32_local_got_tls_type (input_bfd
)[r_symndx
];
5156 relocation
= sgot
->output_section
->vma
+ sgot
->output_offset
+ off
;
5158 if (r_type
== R_NDS32_TLS_IE_LO12S2
)
5161 /* The offset must always be a multiple of 4. We use
5162 the least significant bit to record whether we have
5163 already processed this entry. */
5168 bfd_boolean need_relocs
= FALSE
;
5169 srelgot
= htab
->root
.srelgot
;
5170 if ((bfd_link_pic (info
) || indx
!= 0)
5172 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5173 || h
->root
.type
!= bfd_link_hash_undefweak
))
5176 BFD_ASSERT (srelgot
!= NULL
);
5178 if (tls_type
& GOT_TLS_IE
)
5182 if (h
->dynindx
== 0)
5183 outrel
.r_addend
= relocation
- dtpoff_base (info
);
5185 outrel
.r_addend
= 0;
5186 outrel
.r_offset
= (sgot
->output_section
->vma
5187 + sgot
->output_offset
5190 ELF32_R_INFO (h
->dynindx
, R_NDS32_TLS_TPOFF
);
5192 loc
= srelgot
->contents
;
5194 srelgot
->reloc_count
* sizeof (Elf32_External_Rela
);
5195 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5196 ++srelgot
->reloc_count
;
5199 bfd_put_32 (output_bfd
, h
->root
.u
.def
.value
- TP_OFFSET
,
5200 sgot
->contents
+ off
);
5206 /* DON'T fall through. */
5209 /* OLD_NDS32_RELOC. */
5211 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5212 contents
, offset
, relocation
, addend
);
5216 switch ((int) r_type
)
5218 case R_NDS32_20_RELA
:
5219 case R_NDS32_5_RELA
:
5220 case R_NDS32_9_PCREL_RELA
:
5221 case R_NDS32_WORD_9_PCREL_RELA
:
5222 case R_NDS32_10_UPCREL_RELA
:
5223 case R_NDS32_15_PCREL_RELA
:
5224 case R_NDS32_17_PCREL_RELA
:
5225 case R_NDS32_25_PCREL_RELA
:
5226 case R_NDS32_25_ABS_RELA
:
5227 case R_NDS32_HI20_RELA
:
5228 case R_NDS32_LO12S3_RELA
:
5229 case R_NDS32_LO12S2_RELA
:
5230 case R_NDS32_LO12S2_DP_RELA
:
5231 case R_NDS32_LO12S2_SP_RELA
:
5232 case R_NDS32_LO12S1_RELA
:
5233 case R_NDS32_LO12S0_RELA
:
5234 case R_NDS32_LO12S0_ORI_RELA
:
5235 case R_NDS32_SDA16S3_RELA
:
5236 case R_NDS32_SDA17S2_RELA
:
5237 case R_NDS32_SDA18S1_RELA
:
5238 case R_NDS32_SDA19S0_RELA
:
5239 case R_NDS32_SDA15S3_RELA
:
5240 case R_NDS32_SDA15S2_RELA
:
5241 case R_NDS32_SDA12S2_DP_RELA
:
5242 case R_NDS32_SDA12S2_SP_RELA
:
5243 case R_NDS32_SDA15S1_RELA
:
5244 case R_NDS32_SDA15S0_RELA
:
5245 case R_NDS32_SDA_FP7U2_RELA
:
5246 case R_NDS32_9_PLTREL
:
5247 case R_NDS32_25_PLTREL
:
5249 case R_NDS32_GOT_HI20
:
5250 case R_NDS32_GOT_LO12
:
5251 case R_NDS32_GOT_LO15
:
5252 case R_NDS32_GOT_LO19
:
5253 case R_NDS32_GOT15S2_RELA
:
5254 case R_NDS32_GOT17S2_RELA
:
5255 case R_NDS32_GOTPC20
:
5256 case R_NDS32_GOTPC_HI20
:
5257 case R_NDS32_GOTPC_LO12
:
5258 case R_NDS32_GOTOFF
:
5259 case R_NDS32_GOTOFF_HI20
:
5260 case R_NDS32_GOTOFF_LO12
:
5261 case R_NDS32_GOTOFF_LO15
:
5262 case R_NDS32_GOTOFF_LO19
:
5263 case R_NDS32_PLTREL_HI20
:
5264 case R_NDS32_PLTREL_LO12
:
5265 case R_NDS32_PLT_GOTREL_HI20
:
5266 case R_NDS32_PLT_GOTREL_LO12
:
5267 case R_NDS32_PLT_GOTREL_LO15
:
5268 case R_NDS32_PLT_GOTREL_LO19
:
5269 case R_NDS32_PLT_GOTREL_LO20
:
5270 case R_NDS32_17IFC_PCREL_RELA
:
5271 case R_NDS32_10IFCU_PCREL_RELA
:
5272 case R_NDS32_TLS_LE_HI20
:
5273 case R_NDS32_TLS_LE_LO12
:
5274 case R_NDS32_TLS_IE_HI20
:
5275 case R_NDS32_TLS_IE_LO12S2
:
5276 case R_NDS32_TLS_LE_20
:
5277 case R_NDS32_TLS_LE_15S0
:
5278 case R_NDS32_TLS_LE_15S1
:
5279 case R_NDS32_TLS_LE_15S2
:
5280 /* Instruction related relocs must handle endian properly. */
5281 /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */
5282 r
= nds32_elf_final_link_relocate (howto
, input_bfd
,
5283 input_section
, contents
,
5284 rel
->r_offset
, relocation
,
5289 /* All other relocs can use default handler. */
5290 r
= _bfd_final_link_relocate (howto
, input_bfd
, input_section
,
5291 contents
, rel
->r_offset
,
5292 relocation
, rel
->r_addend
);
5298 if (r
!= bfd_reloc_ok
)
5300 /* FIXME: This should be generic enough to go in a utility. */
5304 name
= h
->root
.root
.string
;
5307 name
= bfd_elf_string_from_elf_section
5308 (input_bfd
, symtab_hdr
->sh_link
, sym
->st_name
);
5309 if (name
== NULL
|| *name
== '\0')
5310 name
= bfd_section_name (input_bfd
, sec
);
5318 case bfd_reloc_overflow
:
5319 (*info
->callbacks
->reloc_overflow
)
5320 (info
, (h
? &h
->root
: NULL
), name
, howto
->name
,
5321 (bfd_vma
) 0, input_bfd
, input_section
, offset
);
5324 case bfd_reloc_undefined
:
5325 (*info
->callbacks
->undefined_symbol
)
5326 (info
, name
, input_bfd
, input_section
, offset
, TRUE
);
5329 case bfd_reloc_outofrange
:
5330 errmsg
= _("internal error: out of range error");
5333 case bfd_reloc_notsupported
:
5334 errmsg
= _("internal error: unsupported relocation error");
5337 case bfd_reloc_dangerous
:
5338 errmsg
= _("internal error: dangerous error");
5342 errmsg
= _("internal error: unknown error");
5346 (*info
->callbacks
->warning
) (info
, errmsg
, name
, input_bfd
,
5347 input_section
, offset
);
5356 /* Finish up dynamic symbol handling. We set the contents of various
5357 dynamic sections here. */
5360 nds32_elf_finish_dynamic_symbol (bfd
*output_bfd
, struct bfd_link_info
*info
,
5361 struct elf_link_hash_entry
*h
, Elf_Internal_Sym
*sym
)
5363 struct elf_nds32_link_hash_table
*htab
;
5366 htab
= nds32_elf_hash_table (info
);
5368 if (h
->plt
.offset
!= (bfd_vma
) - 1)
5376 bfd_vma local_plt_offset
;
5377 Elf_Internal_Rela rela
;
5379 /* This symbol has an entry in the procedure linkage table. Set
5382 BFD_ASSERT (h
->dynindx
!= -1);
5384 splt
= htab
->root
.splt
;
5385 sgot
= htab
->root
.sgotplt
;
5386 srela
= htab
->root
.srelplt
;
5387 BFD_ASSERT (splt
!= NULL
&& sgot
!= NULL
&& srela
!= NULL
);
5389 /* Get the index in the procedure linkage table which
5390 corresponds to this symbol. This is the index of this symbol
5391 in all the symbols for which we are making plt entries. The
5392 first entry in the procedure linkage table is reserved. */
5393 plt_index
= h
->plt
.offset
/ PLT_ENTRY_SIZE
- 1;
5395 /* Get the offset into the .got table of the entry that
5396 corresponds to this function. Each .got entry is 4 bytes.
5397 The first three are reserved. */
5398 got_offset
= (plt_index
+ 3) * 4;
5400 /* Fill in the entry in the procedure linkage table. */
5401 if (!bfd_link_pic (info
))
5405 insn
= PLT_ENTRY_WORD0
+ (((sgot
->output_section
->vma
5406 + sgot
->output_offset
+ got_offset
) >> 12)
5408 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
);
5410 insn
= PLT_ENTRY_WORD1
+ (((sgot
->output_section
->vma
5411 + sgot
->output_offset
+ got_offset
) & 0x0fff)
5413 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 4);
5415 insn
= PLT_ENTRY_WORD2
;
5416 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 8);
5418 insn
= PLT_ENTRY_WORD3
+ (plt_index
& 0x7ffff);
5419 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 12);
5421 insn
= PLT_ENTRY_WORD4
5422 + (((unsigned int) ((-(h
->plt
.offset
+ 16)) >> 1)) & 0xffffff);
5423 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 16);
5424 local_plt_offset
= 12;
5428 /* sda_base must be set at this time. */
5432 /* FIXME, sda_base is 65536, it will damage opcode. */
5433 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5434 offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ got_offset
5435 - elf_gp (output_bfd
);
5436 insn
= PLT_PIC_ENTRY_WORD0
+ ((offset
>> 12) & 0xfffff);
5437 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
);
5439 insn
= PLT_PIC_ENTRY_WORD1
+ (offset
& 0xfff);
5440 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 4);
5442 insn
= PLT_PIC_ENTRY_WORD2
;
5443 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 8);
5445 insn
= PLT_PIC_ENTRY_WORD3
;
5446 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 12);
5448 insn
= PLT_PIC_ENTRY_WORD4
+ (plt_index
& 0x7fffff);
5449 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 16);
5451 insn
= PLT_PIC_ENTRY_WORD5
5452 + (((unsigned int) ((-(h
->plt
.offset
+ 20)) >> 1)) & 0xffffff);
5453 bfd_putb32 (insn
, splt
->contents
+ h
->plt
.offset
+ 20);
5455 local_plt_offset
= 16;
5458 /* Fill in the entry in the global offset table,
5459 so it will fall through to the next instruction for the first time. */
5460 bfd_put_32 (output_bfd
,
5461 (splt
->output_section
->vma
+ splt
->output_offset
5462 + h
->plt
.offset
+ local_plt_offset
),
5463 sgot
->contents
+ got_offset
);
5465 /* Fill in the entry in the .rela.plt section. */
5466 rela
.r_offset
= (sgot
->output_section
->vma
5467 + sgot
->output_offset
+ got_offset
);
5468 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_NDS32_JMP_SLOT
);
5470 loc
= srela
->contents
;
5471 loc
+= plt_index
* sizeof (Elf32_External_Rela
);
5472 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5474 if (!h
->def_regular
)
5476 /* Mark the symbol as undefined, rather than as defined in
5477 the .plt section. Leave the value alone. */
5478 sym
->st_shndx
= SHN_UNDEF
;
5479 if (!h
->ref_regular_nonweak
)
5484 if (h
->got
.offset
!= (bfd_vma
) - 1)
5488 Elf_Internal_Rela rela
;
5490 /* This symbol has an entry in the global offset table.
5493 sgot
= htab
->root
.sgot
;
5494 srela
= htab
->root
.srelgot
;
5495 BFD_ASSERT (sgot
!= NULL
&& srela
!= NULL
);
5497 rela
.r_offset
= (sgot
->output_section
->vma
5498 + sgot
->output_offset
+ (h
->got
.offset
& ~1));
5500 /* If this is a -Bsymbolic link, and the symbol is defined
5501 locally, we just want to emit a RELATIVE reloc. Likewise if
5502 the symbol was forced to be local because of a version file.
5503 The entry in the global offset table will already have been
5504 initialized in the relocate_section function. */
5505 if (bfd_link_pic (info
)
5507 || h
->dynindx
== -1 || h
->forced_local
) && h
->def_regular
)
5509 rela
.r_info
= ELF32_R_INFO (0, R_NDS32_RELATIVE
);
5510 rela
.r_addend
= (h
->root
.u
.def
.value
5511 + h
->root
.u
.def
.section
->output_section
->vma
5512 + h
->root
.u
.def
.section
->output_offset
);
5516 BFD_ASSERT ((h
->got
.offset
& 1) == 0);
5517 bfd_put_32 (output_bfd
, (bfd_vma
) 0,
5518 sgot
->contents
+ h
->got
.offset
);
5519 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_NDS32_GLOB_DAT
);
5523 loc
= srela
->contents
;
5524 loc
+= srela
->reloc_count
* sizeof (Elf32_External_Rela
);
5525 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5526 ++srela
->reloc_count
;
5532 Elf_Internal_Rela rela
;
5534 /* This symbols needs a copy reloc. Set it up. */
5536 BFD_ASSERT (h
->dynindx
!= -1
5537 && (h
->root
.type
== bfd_link_hash_defined
5538 || h
->root
.type
== bfd_link_hash_defweak
));
5540 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
, ".rela.bss");
5541 BFD_ASSERT (s
!= NULL
);
5543 rela
.r_offset
= (h
->root
.u
.def
.value
5544 + h
->root
.u
.def
.section
->output_section
->vma
5545 + h
->root
.u
.def
.section
->output_offset
);
5546 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_NDS32_COPY
);
5549 loc
+= s
->reloc_count
* sizeof (Elf32_External_Rela
);
5550 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
5554 /* Mark some specially defined symbols as absolute. */
5555 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
5556 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
5557 sym
->st_shndx
= SHN_ABS
;
5563 /* Finish up the dynamic sections. */
5566 nds32_elf_finish_dynamic_sections (bfd
*output_bfd
, struct bfd_link_info
*info
)
5568 struct elf_nds32_link_hash_table
*htab
;
5573 htab
= nds32_elf_hash_table (info
);
5574 dynobj
= htab
->root
.dynobj
;
5576 sgot
= htab
->root
.sgotplt
;
5577 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
5579 if (htab
->root
.dynamic_sections_created
)
5582 Elf32_External_Dyn
*dyncon
, *dynconend
;
5584 BFD_ASSERT (sgot
!= NULL
&& sdyn
!= NULL
);
5586 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
5587 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
5589 for (; dyncon
< dynconend
; dyncon
++)
5591 Elf_Internal_Dyn dyn
;
5594 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
5602 s
= htab
->root
.sgotplt
;
5605 s
= htab
->root
.srelplt
;
5607 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
5608 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
5612 s
= htab
->root
.srelplt
;
5613 dyn
.d_un
.d_val
= s
->size
;
5614 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
5619 /* Fill in the first entry in the procedure linkage table. */
5620 splt
= htab
->root
.splt
;
5621 if (splt
&& splt
->size
> 0)
5623 if (bfd_link_pic (info
))
5628 /* FIXME, sda_base is 65536, it will damage opcode. */
5629 /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */
5630 offset
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4
5631 - elf_gp (output_bfd
);
5632 insn
= PLT0_PIC_ENTRY_WORD0
| ((offset
>> 12) & 0xfffff);
5633 bfd_putb32 (insn
, splt
->contents
);
5635 /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */
5636 /* here has a typo? */
5637 insn
= PLT0_PIC_ENTRY_WORD1
| (offset
& 0xfff);
5638 bfd_putb32 (insn
, splt
->contents
+ 4);
5640 insn
= PLT0_PIC_ENTRY_WORD2
;
5641 bfd_putb32 (insn
, splt
->contents
+ 8);
5643 insn
= PLT0_PIC_ENTRY_WORD3
;
5644 bfd_putb32 (insn
, splt
->contents
+ 12);
5646 insn
= PLT0_PIC_ENTRY_WORD4
;
5647 bfd_putb32 (insn
, splt
->contents
+ 16);
5649 insn
= PLT0_PIC_ENTRY_WORD5
;
5650 bfd_putb32 (insn
, splt
->contents
+ 20);
5657 /* addr = .got + 4 */
5658 addr
= sgot
->output_section
->vma
+ sgot
->output_offset
+ 4;
5659 insn
= PLT0_ENTRY_WORD0
| ((addr
>> 12) & 0xfffff);
5660 bfd_putb32 (insn
, splt
->contents
);
5662 insn
= PLT0_ENTRY_WORD1
| (addr
& 0x0fff);
5663 bfd_putb32 (insn
, splt
->contents
+ 4);
5665 insn
= PLT0_ENTRY_WORD2
;
5666 bfd_putb32 (insn
, splt
->contents
+ 8);
5668 insn
= PLT0_ENTRY_WORD3
;
5669 bfd_putb32 (insn
, splt
->contents
+ 12);
5671 insn
= PLT0_ENTRY_WORD4
;
5672 bfd_putb32 (insn
, splt
->contents
+ 16);
5675 elf_section_data (splt
->output_section
)->this_hdr
.sh_entsize
=
5680 /* Fill in the first three entries in the global offset table. */
5681 if (sgot
&& sgot
->size
> 0)
5684 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
);
5686 bfd_put_32 (output_bfd
,
5687 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
5689 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 4);
5690 bfd_put_32 (output_bfd
, (bfd_vma
) 0, sgot
->contents
+ 8);
5692 elf_section_data (sgot
->output_section
)->this_hdr
.sh_entsize
= 4;
5699 /* Set the right machine number. */
5702 nds32_elf_object_p (bfd
*abfd
)
5704 static unsigned int cur_arch
= 0;
5706 if (E_N1_ARCH
!= (elf_elfheader (abfd
)->e_flags
& EF_NDS_ARCH
))
5708 /* E_N1_ARCH is a wild card, so it is set only when no others exist. */
5709 cur_arch
= (elf_elfheader (abfd
)->e_flags
& EF_NDS_ARCH
);
5716 bfd_default_set_arch_mach (abfd
, bfd_arch_nds32
, bfd_mach_n1
);
5719 bfd_default_set_arch_mach (abfd
, bfd_arch_nds32
, bfd_mach_n1h
);
5721 case E_NDS_ARCH_STAR_V2_0
:
5722 bfd_default_set_arch_mach (abfd
, bfd_arch_nds32
, bfd_mach_n1h_v2
);
5724 case E_NDS_ARCH_STAR_V3_0
:
5725 bfd_default_set_arch_mach (abfd
, bfd_arch_nds32
, bfd_mach_n1h_v3
);
5727 case E_NDS_ARCH_STAR_V3_M
:
5728 bfd_default_set_arch_mach (abfd
, bfd_arch_nds32
, bfd_mach_n1h_v3m
);
5735 /* Store the machine number in the flags field. */
5738 nds32_elf_final_write_processing (bfd
*abfd
,
5739 bfd_boolean linker ATTRIBUTE_UNUSED
)
5742 static unsigned int cur_mach
= 0;
5744 if (bfd_mach_n1
!= bfd_get_mach (abfd
))
5746 cur_mach
= bfd_get_mach (abfd
);
5752 /* Only happen when object is empty, since the case is abandon. */
5754 val
|= E_NDS_ABI_AABI
;
5755 val
|= E_NDS32_ELF_VER_1_4
;
5760 case bfd_mach_n1h_v2
:
5761 val
= E_NDS_ARCH_STAR_V2_0
;
5763 case bfd_mach_n1h_v3
:
5764 val
= E_NDS_ARCH_STAR_V3_0
;
5766 case bfd_mach_n1h_v3m
:
5767 val
= E_NDS_ARCH_STAR_V3_M
;
5774 elf_elfheader (abfd
)->e_flags
&= ~EF_NDS_ARCH
;
5775 elf_elfheader (abfd
)->e_flags
|= val
;
5778 /* Function to keep NDS32 specific file flags. */
5781 nds32_elf_set_private_flags (bfd
*abfd
, flagword flags
)
5783 BFD_ASSERT (!elf_flags_init (abfd
)
5784 || elf_elfheader (abfd
)->e_flags
== flags
);
5786 elf_elfheader (abfd
)->e_flags
= flags
;
5787 elf_flags_init (abfd
) = TRUE
;
5792 convert_e_flags (unsigned int e_flags
, unsigned int arch
)
5794 if ((e_flags
& EF_NDS_ARCH
) == E_NDS_ARCH_STAR_V0_9
)
5796 /* From 0.9 to 1.0. */
5797 e_flags
= (e_flags
& (~EF_NDS_ARCH
)) | E_NDS_ARCH_STAR_V1_0
;
5799 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5800 e_flags
^= E_NDS32_HAS_NO_MAC_INST
;
5801 if (arch
== E_NDS_ARCH_STAR_V1_0
)
5808 /* From 1.0 to 2.0. */
5809 e_flags
= (e_flags
& (~EF_NDS_ARCH
)) | E_NDS_ARCH_STAR_V2_0
;
5811 /* Clear E_NDS32_HAS_MFUSR_PC_INST. */
5812 e_flags
&= ~E_NDS32_HAS_MFUSR_PC_INST
;
5814 /* Invert E_NDS32_HAS_NO_MAC_INST. */
5815 e_flags
^= E_NDS32_HAS_NO_MAC_INST
;
5820 nds32_check_vec_size (bfd
*ibfd
)
5822 static unsigned int nds32_vec_size
= 0;
5824 asection
*sec_t
= NULL
;
5825 bfd_byte
*contents
= NULL
;
5827 sec_t
= bfd_get_section_by_name (ibfd
, ".nds32_e_flags");
5829 if (sec_t
&& sec_t
->size
>= 4)
5831 /* Get vec_size in file. */
5832 unsigned int flag_t
;
5834 nds32_get_section_contents (ibfd
, sec_t
, &contents
, TRUE
);
5835 flag_t
= bfd_get_32 (ibfd
, contents
);
5837 /* The value could only be 4 or 16. */
5839 if (!nds32_vec_size
)
5840 /* Set if not set yet. */
5841 nds32_vec_size
= (flag_t
& 0x3);
5842 else if (nds32_vec_size
!= (flag_t
& 0x3))
5845 /* xgettext:c-format */
5846 (_("%pB: ISR vector size mismatch"
5847 " with previous modules, previous %u-byte, current %u-byte"),
5849 nds32_vec_size
== 1 ? 4 : nds32_vec_size
== 2 ? 16 : 0xffffffff,
5850 (flag_t
& 0x3) == 1 ? 4 : (flag_t
& 0x3) == 2 ? 16 : 0xffffffff);
5854 /* Only keep the first vec_size section. */
5855 sec_t
->flags
|= SEC_EXCLUDE
;
5861 /* Merge backend specific data from an object file to the output
5862 object file when linking. */
5865 nds32_elf_merge_private_bfd_data (bfd
*ibfd
, struct bfd_link_info
*info
)
5867 bfd
*obfd
= info
->output_bfd
;
5870 flagword out_16regs
;
5872 flagword out_no_mac
;
5874 flagword out_version
;
5875 flagword in_version
;
5876 flagword out_fpu_config
;
5877 flagword in_fpu_config
;
5879 /* TODO: Revise to use object-attributes instead. */
5880 if (!nds32_check_vec_size (ibfd
))
5883 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5884 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5887 if (bfd_little_endian (ibfd
) != bfd_little_endian (obfd
))
5890 (_("%pB: warning: endian mismatch with previous modules"), ibfd
);
5892 bfd_set_error (bfd_error_bad_value
);
5896 in_version
= elf_elfheader (ibfd
)->e_flags
& EF_NDS32_ELF_VERSION
;
5897 if (in_version
== E_NDS32_ELF_VER_1_2
)
5900 (_("%pB: warning: older version of object file encountered, "
5901 "please recompile with current tool chain"), ibfd
);
5904 /* We may need to merge V1 and V2 arch object files to V2. */
5905 if ((elf_elfheader (ibfd
)->e_flags
& EF_NDS_ARCH
)
5906 != (elf_elfheader (obfd
)->e_flags
& EF_NDS_ARCH
))
5908 /* Need to convert version. */
5909 if ((elf_elfheader (ibfd
)->e_flags
& EF_NDS_ARCH
)
5910 == E_NDS_ARCH_STAR_RESERVED
)
5912 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5914 else if ((elf_elfheader (obfd
)->e_flags
& EF_NDS_ARCH
) == E_NDS_ARCH_STAR_V0_9
5915 || (elf_elfheader (ibfd
)->e_flags
& EF_NDS_ARCH
)
5916 > (elf_elfheader (obfd
)->e_flags
& EF_NDS_ARCH
))
5918 elf_elfheader (obfd
)->e_flags
=
5919 convert_e_flags (elf_elfheader (obfd
)->e_flags
,
5920 (elf_elfheader (ibfd
)->e_flags
& EF_NDS_ARCH
));
5924 elf_elfheader (ibfd
)->e_flags
=
5925 convert_e_flags (elf_elfheader (ibfd
)->e_flags
,
5926 (elf_elfheader (obfd
)->e_flags
& EF_NDS_ARCH
));
5930 /* Extract some flags. */
5931 in_flags
= elf_elfheader (ibfd
)->e_flags
5932 & (~(E_NDS32_HAS_REDUCED_REGS
| EF_NDS32_ELF_VERSION
5933 | E_NDS32_HAS_NO_MAC_INST
| E_NDS32_FPU_REG_CONF
));
5935 /* The following flags need special treatment. */
5936 in_16regs
= elf_elfheader (ibfd
)->e_flags
& E_NDS32_HAS_REDUCED_REGS
;
5937 in_no_mac
= elf_elfheader (ibfd
)->e_flags
& E_NDS32_HAS_NO_MAC_INST
;
5938 in_fpu_config
= elf_elfheader (ibfd
)->e_flags
& E_NDS32_FPU_REG_CONF
;
5940 /* Extract some flags. */
5941 out_flags
= elf_elfheader (obfd
)->e_flags
5942 & (~(E_NDS32_HAS_REDUCED_REGS
| EF_NDS32_ELF_VERSION
5943 | E_NDS32_HAS_NO_MAC_INST
| E_NDS32_FPU_REG_CONF
));
5945 /* The following flags need special treatment. */
5946 out_16regs
= elf_elfheader (obfd
)->e_flags
& E_NDS32_HAS_REDUCED_REGS
;
5947 out_no_mac
= elf_elfheader (obfd
)->e_flags
& E_NDS32_HAS_NO_MAC_INST
;
5948 out_fpu_config
= elf_elfheader (obfd
)->e_flags
& E_NDS32_FPU_REG_CONF
;
5949 out_version
= elf_elfheader (obfd
)->e_flags
& EF_NDS32_ELF_VERSION
;
5950 if (!elf_flags_init (obfd
))
5952 /* If the input is the default architecture then do not
5953 bother setting the flags for the output architecture,
5954 instead allow future merges to do this. If no future
5955 merges ever set these flags then they will retain their
5956 unitialised values, which surprise surprise, correspond
5957 to the default values. */
5958 if (bfd_get_arch_info (ibfd
)->the_default
)
5961 elf_flags_init (obfd
) = TRUE
;
5962 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
5964 if (bfd_get_arch (obfd
) == bfd_get_arch (ibfd
)
5965 && bfd_get_arch_info (obfd
)->the_default
)
5967 return bfd_set_arch_mach (obfd
, bfd_get_arch (ibfd
),
5968 bfd_get_mach (ibfd
));
5974 /* Check flag compatibility. */
5975 if ((in_flags
& EF_NDS_ABI
) != (out_flags
& EF_NDS_ABI
))
5978 (_("%pB: error: ABI mismatch with previous modules"), ibfd
);
5980 bfd_set_error (bfd_error_bad_value
);
5984 if ((in_flags
& EF_NDS_ARCH
) != (out_flags
& EF_NDS_ARCH
))
5986 if (((in_flags
& EF_NDS_ARCH
) != E_N1_ARCH
))
5989 (_("%pB: error: instruction set mismatch with previous modules"),
5992 bfd_set_error (bfd_error_bad_value
);
5997 /* When linking with V1.2 and V1.3 objects together the output is V1.2.
5998 and perf ext1 and DIV are mergerd to perf ext1. */
5999 if (in_version
== E_NDS32_ELF_VER_1_2
|| out_version
== E_NDS32_ELF_VER_1_2
)
6001 elf_elfheader (obfd
)->e_flags
=
6002 (in_flags
& (~(E_NDS32_HAS_EXT_INST
| E_NDS32_HAS_DIV_INST
)))
6003 | (out_flags
& (~(E_NDS32_HAS_EXT_INST
| E_NDS32_HAS_DIV_INST
)))
6004 | (((in_flags
& (E_NDS32_HAS_EXT_INST
| E_NDS32_HAS_DIV_INST
)))
6005 ? E_NDS32_HAS_EXT_INST
: 0)
6006 | (((out_flags
& (E_NDS32_HAS_EXT_INST
| E_NDS32_HAS_DIV_INST
)))
6007 ? E_NDS32_HAS_EXT_INST
: 0)
6008 | (in_16regs
& out_16regs
) | (in_no_mac
& out_no_mac
)
6009 | ((in_version
> out_version
) ? out_version
: in_version
);
6013 if (in_version
!= out_version
)
6015 /* xgettext:c-format */
6016 (_("%pB: warning: incompatible elf-versions %s and %s"),
6017 ibfd
, nds32_elfver_strtab
[out_version
],
6018 nds32_elfver_strtab
[in_version
]);
6020 elf_elfheader (obfd
)->e_flags
= in_flags
| out_flags
6021 | (in_16regs
& out_16regs
) | (in_no_mac
& out_no_mac
)
6022 | (in_fpu_config
> out_fpu_config
? in_fpu_config
: out_fpu_config
)
6023 | (in_version
> out_version
? out_version
: in_version
);
6029 /* Display the flags field. */
6032 nds32_elf_print_private_bfd_data (bfd
*abfd
, void *ptr
)
6034 FILE *file
= (FILE *) ptr
;
6036 BFD_ASSERT (abfd
!= NULL
&& ptr
!= NULL
);
6038 _bfd_elf_print_private_bfd_data (abfd
, ptr
);
6040 fprintf (file
, _("private flags = %lx"), elf_elfheader (abfd
)->e_flags
);
6042 switch (elf_elfheader (abfd
)->e_flags
& EF_NDS_ARCH
)
6046 fprintf (file
, _(": n1 instructions"));
6049 fprintf (file
, _(": n1h instructions"));
6059 nds32_elf_action_discarded (asection
*sec
)
6063 (".gcc_except_table", sec
->name
, sizeof (".gcc_except_table") - 1) == 0)
6066 return _bfd_elf_default_action_discarded (sec
);
6070 nds32_elf_gc_mark_hook (asection
*sec
, struct bfd_link_info
*info
,
6071 Elf_Internal_Rela
*rel
, struct elf_link_hash_entry
*h
,
6072 Elf_Internal_Sym
*sym
)
6075 switch (ELF32_R_TYPE (rel
->r_info
))
6077 case R_NDS32_GNU_VTINHERIT
:
6078 case R_NDS32_GNU_VTENTRY
:
6079 case R_NDS32_RELA_GNU_VTINHERIT
:
6080 case R_NDS32_RELA_GNU_VTENTRY
:
6084 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
6087 /* Look through the relocs for a section during the first phase.
6088 Since we don't do .gots or .plts, we just need to consider the
6089 virtual table relocs for gc. */
6092 nds32_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
6093 asection
*sec
, const Elf_Internal_Rela
*relocs
)
6095 Elf_Internal_Shdr
*symtab_hdr
;
6096 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
6097 const Elf_Internal_Rela
*rel
;
6098 const Elf_Internal_Rela
*rel_end
;
6099 struct elf_nds32_link_hash_table
*htab
;
6101 asection
*sreloc
= NULL
;
6103 if (bfd_link_relocatable (info
))
6106 /* Don't do anything special with non-loaded, non-alloced sections.
6107 In particular, any relocs in such sections should not affect GOT
6108 and PLT reference counting (ie. we don't allow them to create GOT
6109 or PLT entries), there's no possibility or desire to optimize TLS
6110 relocs, and there's not much point in propagating relocs to shared
6111 libs that the dynamic linker won't relocate. */
6112 if ((sec
->flags
& SEC_ALLOC
) == 0)
6115 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
6116 sym_hashes
= elf_sym_hashes (abfd
);
6118 sym_hashes
+ symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
);
6119 if (!elf_bad_symtab (abfd
))
6120 sym_hashes_end
-= symtab_hdr
->sh_info
;
6122 htab
= nds32_elf_hash_table (info
);
6123 dynobj
= htab
->root
.dynobj
;
6125 rel_end
= relocs
+ sec
->reloc_count
;
6126 for (rel
= relocs
; rel
< rel_end
; rel
++)
6128 enum elf_nds32_reloc_type r_type
;
6129 struct elf_link_hash_entry
*h
;
6130 unsigned long r_symndx
;
6131 int tls_type
, old_tls_type
;
6133 r_symndx
= ELF32_R_SYM (rel
->r_info
);
6134 r_type
= ELF32_R_TYPE (rel
->r_info
);
6135 if (r_symndx
< symtab_hdr
->sh_info
)
6139 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6140 while (h
->root
.type
== bfd_link_hash_indirect
6141 || h
->root
.type
== bfd_link_hash_warning
)
6142 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6145 /* Some relocs require a global offset table. We create
6146 got section here, since these relocation need got section
6147 and it is not created yet. */
6148 if (htab
->root
.sgot
== NULL
)
6152 case R_NDS32_GOT_HI20
:
6153 case R_NDS32_GOT_LO12
:
6154 case R_NDS32_GOT_LO15
:
6155 case R_NDS32_GOT_LO19
:
6156 case R_NDS32_GOT17S2_RELA
:
6157 case R_NDS32_GOT15S2_RELA
:
6158 case R_NDS32_GOTOFF
:
6159 case R_NDS32_GOTOFF_HI20
:
6160 case R_NDS32_GOTOFF_LO12
:
6161 case R_NDS32_GOTOFF_LO15
:
6162 case R_NDS32_GOTOFF_LO19
:
6163 case R_NDS32_GOTPC20
:
6164 case R_NDS32_GOTPC_HI20
:
6165 case R_NDS32_GOTPC_LO12
:
6167 case R_NDS32_TLS_IE_HI20
:
6168 case R_NDS32_TLS_IE_LO12S2
:
6170 htab
->root
.dynobj
= dynobj
= abfd
;
6171 if (!_bfd_elf_create_got_section (dynobj
, info
))
6180 switch ((int) r_type
)
6182 case R_NDS32_GOT_HI20
:
6183 case R_NDS32_GOT_LO12
:
6184 case R_NDS32_GOT_LO15
:
6185 case R_NDS32_GOT_LO19
:
6187 case R_NDS32_TLS_IE_HI20
:
6188 case R_NDS32_TLS_IE_LO12S2
:
6191 case R_NDS32_TLS_IE_HI20
:
6192 case R_NDS32_TLS_IE_LO12S2
:
6193 tls_type
= GOT_TLS_IE
;
6196 tls_type
= GOT_NORMAL
;
6201 old_tls_type
= elf32_nds32_hash_entry (h
)->tls_type
;
6202 h
->got
.refcount
+= 1;
6206 bfd_signed_vma
*local_got_refcounts
;
6208 /* This is a global offset table entry for a local
6210 local_got_refcounts
= elf_local_got_refcounts (abfd
);
6211 if (local_got_refcounts
== NULL
)
6215 size
= symtab_hdr
->sh_info
;
6216 size
*= sizeof (bfd_signed_vma
);
6217 local_got_refcounts
= (bfd_signed_vma
*) bfd_zalloc (abfd
, size
);
6218 if (local_got_refcounts
== NULL
)
6220 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
6222 local_got_refcounts
[r_symndx
] += 1;
6223 old_tls_type
= elf32_nds32_local_got_tls_type (abfd
)[r_symndx
];
6226 /* We will already have issued an error message if there
6227 is a TLS/non-TLS mismatch, based on the symbol
6228 type. So just combine any TLS types needed. */
6229 if (old_tls_type
!= GOT_UNKNOWN
&& old_tls_type
!= GOT_NORMAL
6230 && tls_type
!= GOT_NORMAL
)
6231 tls_type
|= old_tls_type
;
6233 if (old_tls_type
!= tls_type
)
6236 elf32_nds32_hash_entry (h
)->tls_type
= tls_type
;
6238 elf32_nds32_local_got_tls_type (abfd
)[r_symndx
] = tls_type
;
6241 case R_NDS32_9_PLTREL
:
6242 case R_NDS32_25_PLTREL
:
6243 case R_NDS32_PLTREL_HI20
:
6244 case R_NDS32_PLTREL_LO12
:
6245 case R_NDS32_PLT_GOTREL_HI20
:
6246 case R_NDS32_PLT_GOTREL_LO12
:
6247 case R_NDS32_PLT_GOTREL_LO15
:
6248 case R_NDS32_PLT_GOTREL_LO19
:
6249 case R_NDS32_PLT_GOTREL_LO20
:
6251 /* This symbol requires a procedure linkage table entry. We
6252 actually build the entry in adjust_dynamic_symbol,
6253 because this might be a case of linking PIC code without
6254 linking in any dynamic objects, in which case we don't
6255 need to generate a procedure linkage table after all. */
6257 /* If this is a local symbol, we resolve it directly without
6258 creating a procedure linkage table entry. */
6262 if (h
->forced_local
)
6265 elf32_nds32_hash_entry (h
)->tls_type
= GOT_NORMAL
;
6267 h
->plt
.refcount
+= 1;
6270 case R_NDS32_16_RELA
:
6271 case R_NDS32_20_RELA
:
6272 case R_NDS32_5_RELA
:
6273 case R_NDS32_32_RELA
:
6274 case R_NDS32_HI20_RELA
:
6275 case R_NDS32_LO12S3_RELA
:
6276 case R_NDS32_LO12S2_RELA
:
6277 case R_NDS32_LO12S2_DP_RELA
:
6278 case R_NDS32_LO12S2_SP_RELA
:
6279 case R_NDS32_LO12S1_RELA
:
6280 case R_NDS32_LO12S0_RELA
:
6281 case R_NDS32_LO12S0_ORI_RELA
:
6282 case R_NDS32_SDA16S3_RELA
:
6283 case R_NDS32_SDA17S2_RELA
:
6284 case R_NDS32_SDA18S1_RELA
:
6285 case R_NDS32_SDA19S0_RELA
:
6286 case R_NDS32_SDA15S3_RELA
:
6287 case R_NDS32_SDA15S2_RELA
:
6288 case R_NDS32_SDA12S2_DP_RELA
:
6289 case R_NDS32_SDA12S2_SP_RELA
:
6290 case R_NDS32_SDA15S1_RELA
:
6291 case R_NDS32_SDA15S0_RELA
:
6292 case R_NDS32_SDA_FP7U2_RELA
:
6293 case R_NDS32_15_PCREL_RELA
:
6294 case R_NDS32_17_PCREL_RELA
:
6295 case R_NDS32_25_PCREL_RELA
:
6297 if (h
!= NULL
&& !bfd_link_pic (info
))
6300 h
->plt
.refcount
+= 1;
6303 /* If we are creating a shared library, and this is a reloc against
6304 a global symbol, or a non PC relative reloc against a local
6305 symbol, then we need to copy the reloc into the shared library.
6306 However, if we are linking with -Bsymbolic, we do not need to
6307 copy a reloc against a global symbol which is defined in an
6308 object we are including in the link (i.e., DEF_REGULAR is set).
6309 At this point we have not seen all the input files, so it is
6310 possible that DEF_REGULAR is not set now but will be set later
6311 (it is never cleared). We account for that possibility below by
6312 storing information in the dyn_relocs field of the hash table
6313 entry. A similar situation occurs when creating shared libraries
6314 and symbol visibility changes render the symbol local.
6316 If on the other hand, we are creating an executable, we may need
6317 to keep relocations for symbols satisfied by a dynamic library
6318 if we manage to avoid copy relocs for the symbol. */
6319 if ((bfd_link_pic (info
)
6320 && (sec
->flags
& SEC_ALLOC
) != 0
6321 && ((r_type
!= R_NDS32_25_PCREL_RELA
6322 && r_type
!= R_NDS32_15_PCREL_RELA
6323 && r_type
!= R_NDS32_17_PCREL_RELA
6324 && !(r_type
== R_NDS32_32_RELA
6325 && strcmp (sec
->name
, ".eh_frame") == 0))
6328 || h
->root
.type
== bfd_link_hash_defweak
6329 || !h
->def_regular
))))
6330 || (!bfd_link_pic (info
)
6331 && (sec
->flags
& SEC_ALLOC
) != 0
6333 && (h
->root
.type
== bfd_link_hash_defweak
6334 || !h
->def_regular
)))
6336 struct elf_dyn_relocs
*p
;
6337 struct elf_dyn_relocs
**head
;
6340 htab
->root
.dynobj
= dynobj
= abfd
;
6342 /* When creating a shared object, we must copy these
6343 relocs into the output file. We create a reloc
6344 section in dynobj and make room for the reloc. */
6349 name
= bfd_elf_string_from_elf_section
6350 (abfd
, elf_elfheader (abfd
)->e_shstrndx
,
6351 elf_section_data (sec
)->rela
.hdr
->sh_name
);
6355 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
6356 && strcmp (bfd_get_section_name (abfd
, sec
),
6359 sreloc
= bfd_get_section_by_name (dynobj
, name
);
6364 sreloc
= bfd_make_section (dynobj
, name
);
6365 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
6366 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
6367 if ((sec
->flags
& SEC_ALLOC
) != 0)
6368 flags
|= SEC_ALLOC
| SEC_LOAD
;
6370 || !bfd_set_section_flags (dynobj
, sreloc
, flags
)
6371 || !bfd_set_section_alignment (dynobj
, sreloc
, 2))
6374 elf_section_type (sreloc
) = SHT_RELA
;
6376 elf_section_data (sec
)->sreloc
= sreloc
;
6379 /* If this is a global symbol, we count the number of
6380 relocations we need for this symbol. */
6382 head
= &((struct elf_nds32_link_hash_entry
*) h
)->dyn_relocs
;
6388 Elf_Internal_Sym
*isym
;
6389 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
, abfd
, r_symndx
);
6393 /* Track dynamic relocs needed for local syms too. */
6394 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6398 vpp
= &elf_section_data (s
)->local_dynrel
;
6399 head
= (struct elf_dyn_relocs
**) vpp
;
6403 if (p
== NULL
|| p
->sec
!= sec
)
6405 bfd_size_type amt
= sizeof (*p
);
6406 p
= (struct elf_dyn_relocs
*) bfd_alloc (dynobj
, amt
);
6417 if (ELF32_R_TYPE (rel
->r_info
) == R_NDS32_25_PCREL_RELA
6418 || ELF32_R_TYPE (rel
->r_info
) == R_NDS32_15_PCREL_RELA
6419 || ELF32_R_TYPE (rel
->r_info
) == R_NDS32_17_PCREL_RELA
)
6424 /* This relocation describes the C++ object vtable hierarchy.
6425 Reconstruct it for later use during GC. */
6426 case R_NDS32_RELA_GNU_VTINHERIT
:
6427 case R_NDS32_GNU_VTINHERIT
:
6428 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
6432 /* This relocation describes which C++ vtable entries are actually
6433 used. Record for later use during GC. */
6434 case R_NDS32_GNU_VTENTRY
:
6435 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_offset
))
6438 case R_NDS32_RELA_GNU_VTENTRY
:
6439 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
6448 /* Write VAL in uleb128 format to P, returning a pointer to the
6450 This code is copied from elf-attr.c. */
6453 write_uleb128 (bfd_byte
*p
, unsigned int val
)
6468 static bfd_signed_vma
6469 calculate_offset (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
6470 Elf_Internal_Sym
*isymbuf
, Elf_Internal_Shdr
*symtab_hdr
,
6471 int *pic_ext_target
)
6473 bfd_signed_vma foff
;
6474 bfd_vma symval
, addend
;
6477 /* Get the value of the symbol referred to by the reloc. */
6478 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6480 Elf_Internal_Sym
*isym
;
6482 /* A local symbol. */
6483 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6485 if (isym
->st_shndx
== SHN_UNDEF
)
6486 sym_sec
= bfd_und_section_ptr
;
6487 else if (isym
->st_shndx
== SHN_ABS
)
6488 sym_sec
= bfd_abs_section_ptr
;
6489 else if (isym
->st_shndx
== SHN_COMMON
)
6490 sym_sec
= bfd_com_section_ptr
;
6492 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6493 symval
= isym
->st_value
+ sym_sec
->output_section
->vma
6494 + sym_sec
->output_offset
;
6499 struct elf_link_hash_entry
*h
;
6502 /* An external symbol. */
6503 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6504 h
= elf_sym_hashes (abfd
)[indx
];
6505 BFD_ASSERT (h
!= NULL
);
6507 if (h
->root
.type
!= bfd_link_hash_defined
6508 && h
->root
.type
!= bfd_link_hash_defweak
)
6509 /* This appears to be a reference to an undefined
6510 symbol. Just ignore it--it will be caught by the
6511 regular reloc processing. */
6513 owner
= h
->root
.u
.def
.section
->owner
;
6514 if (owner
&& (elf_elfheader (owner
)->e_flags
& E_NDS32_HAS_PIC
))
6515 *pic_ext_target
= 1;
6517 if (h
->root
.u
.def
.section
->flags
& SEC_MERGE
)
6519 sym_sec
= h
->root
.u
.def
.section
;
6520 symval
= _bfd_merged_section_offset (abfd
, &sym_sec
,
6521 elf_section_data (sym_sec
)->sec_info
,
6522 h
->root
.u
.def
.value
);
6523 symval
= symval
+ sym_sec
->output_section
->vma
6524 + sym_sec
->output_offset
;
6527 symval
= (h
->root
.u
.def
.value
6528 + h
->root
.u
.def
.section
->output_section
->vma
6529 + h
->root
.u
.def
.section
->output_offset
);
6532 addend
= irel
->r_addend
;
6534 foff
= (symval
+ addend
6535 - (irel
->r_offset
+ sec
->output_section
->vma
+ sec
->output_offset
));
6540 calculate_plt_memory_address (bfd
*abfd
, struct bfd_link_info
*link_info
,
6541 Elf_Internal_Sym
*isymbuf
,
6542 Elf_Internal_Rela
*irel
,
6543 Elf_Internal_Shdr
*symtab_hdr
)
6547 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
6549 Elf_Internal_Sym
*isym
;
6551 /* A local symbol. */
6552 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
6554 if (isym
->st_shndx
== SHN_UNDEF
)
6555 sym_sec
= bfd_und_section_ptr
;
6556 else if (isym
->st_shndx
== SHN_ABS
)
6557 sym_sec
= bfd_abs_section_ptr
;
6558 else if (isym
->st_shndx
== SHN_COMMON
)
6559 sym_sec
= bfd_com_section_ptr
;
6561 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
6562 symval
= isym
->st_value
+ sym_sec
->output_section
->vma
6563 + sym_sec
->output_offset
;
6568 struct elf_link_hash_entry
*h
;
6569 struct elf_nds32_link_hash_table
*htab
;
6572 /* An external symbol. */
6573 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
6574 h
= elf_sym_hashes (abfd
)[indx
];
6575 BFD_ASSERT (h
!= NULL
);
6576 htab
= nds32_elf_hash_table (link_info
);
6577 splt
= htab
->root
.splt
;
6579 while (h
->root
.type
== bfd_link_hash_indirect
6580 || h
->root
.type
== bfd_link_hash_warning
)
6581 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6583 if (h
->plt
.offset
== (bfd_vma
) - 1)
6585 if (h
->root
.type
!= bfd_link_hash_defined
6586 && h
->root
.type
!= bfd_link_hash_defweak
)
6587 /* This appears to be a reference to an undefined
6588 * symbol. Just ignore it--it will be caught by the
6589 * regular reloc processing. */
6591 symval
= (h
->root
.u
.def
.value
6592 + h
->root
.u
.def
.section
->output_section
->vma
6593 + h
->root
.u
.def
.section
->output_offset
);
6596 symval
= splt
->output_section
->vma
+ h
->plt
.offset
;
6602 static bfd_signed_vma
6603 calculate_plt_offset (bfd
*abfd
, asection
*sec
, struct bfd_link_info
*link_info
,
6604 Elf_Internal_Sym
*isymbuf
, Elf_Internal_Rela
*irel
,
6605 Elf_Internal_Shdr
*symtab_hdr
)
6608 if ((foff
= calculate_plt_memory_address (abfd
, link_info
, isymbuf
, irel
,
6612 return foff
- (irel
->r_offset
6613 + sec
->output_section
->vma
+ sec
->output_offset
);
6616 /* Convert a 32-bit instruction to 16-bit one.
6617 INSN is the input 32-bit instruction, INSN16 is the output 16-bit
6618 instruction. If INSN_TYPE is not NULL, it the CGEN instruction
6619 type of INSN16. Return 1 if successful. */
6622 nds32_convert_32_to_16_alu1 (bfd
*abfd
, uint32_t insn
, uint16_t *pinsn16
,
6625 uint16_t insn16
= 0;
6627 unsigned long mach
= bfd_get_mach (abfd
);
6629 if (N32_SH5 (insn
) != 0)
6632 switch (N32_SUB5 (insn
))
6634 case N32_ALU1_ADD_SLLI
:
6635 case N32_ALU1_ADD_SRLI
:
6636 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
) && N32_IS_RB3 (insn
))
6638 insn16
= N16_TYPE333 (ADD333
, N32_RT5 (insn
), N32_RA5 (insn
),
6640 insn_type
= NDS32_INSN_ADD333
;
6642 else if (N32_IS_RT4 (insn
))
6644 if (N32_RT5 (insn
) == N32_RA5 (insn
))
6645 insn16
= N16_TYPE45 (ADD45
, N32_RT54 (insn
), N32_RB5 (insn
));
6646 else if (N32_RT5 (insn
) == N32_RB5 (insn
))
6647 insn16
= N16_TYPE45 (ADD45
, N32_RT54 (insn
), N32_RA5 (insn
));
6648 insn_type
= NDS32_INSN_ADD45
;
6652 case N32_ALU1_SUB_SLLI
:
6653 case N32_ALU1_SUB_SRLI
:
6654 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
) && N32_IS_RB3 (insn
))
6656 insn16
= N16_TYPE333 (SUB333
, N32_RT5 (insn
), N32_RA5 (insn
),
6658 insn_type
= NDS32_INSN_SUB333
;
6660 else if (N32_IS_RT4 (insn
) && N32_RT5 (insn
) == N32_RA5 (insn
))
6662 insn16
= N16_TYPE45 (SUB45
, N32_RT54 (insn
), N32_RB5 (insn
));
6663 insn_type
= NDS32_INSN_SUB45
;
6667 case N32_ALU1_AND_SLLI
:
6668 case N32_ALU1_AND_SRLI
:
6669 /* and $rt, $rt, $rb -> and33 for v3, v3m. */
6670 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
6671 && N32_IS_RB3 (insn
))
6673 if (N32_RT5 (insn
) == N32_RA5 (insn
))
6674 insn16
= N16_MISC33 (AND33
, N32_RT5 (insn
), N32_RB5 (insn
));
6675 else if (N32_RT5 (insn
) == N32_RB5 (insn
))
6676 insn16
= N16_MISC33 (AND33
, N32_RT5 (insn
), N32_RA5 (insn
));
6678 insn_type
= NDS32_INSN_AND33
;
6682 case N32_ALU1_XOR_SLLI
:
6683 case N32_ALU1_XOR_SRLI
:
6684 /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */
6685 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
6686 && N32_IS_RB3 (insn
))
6688 if (N32_RT5 (insn
) == N32_RA5 (insn
))
6689 insn16
= N16_MISC33 (XOR33
, N32_RT5 (insn
), N32_RB5 (insn
));
6690 else if (N32_RT5 (insn
) == N32_RB5 (insn
))
6691 insn16
= N16_MISC33 (XOR33
, N32_RT5 (insn
), N32_RA5 (insn
));
6693 insn_type
= NDS32_INSN_XOR33
;
6697 case N32_ALU1_OR_SLLI
:
6698 case N32_ALU1_OR_SRLI
:
6699 /* or $rt, $rt, $rb -> or33 for v3, v3m. */
6700 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
6701 && N32_IS_RB3 (insn
))
6703 if (N32_RT5 (insn
) == N32_RA5 (insn
))
6704 insn16
= N16_MISC33 (OR33
, N32_RT5 (insn
), N32_RB5 (insn
));
6705 else if (N32_RT5 (insn
) == N32_RB5 (insn
))
6706 insn16
= N16_MISC33 (OR33
, N32_RT5 (insn
), N32_RA5 (insn
));
6708 insn_type
= NDS32_INSN_OR33
;
6712 /* nor $rt, $ra, $ra -> not33 for v3, v3m. */
6713 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
) && N32_IS_RB3 (insn
)
6714 && N32_RA5 (insn
) == N32_RB5 (insn
))
6716 insn16
= N16_MISC33 (NOT33
, N32_RT5 (insn
), N32_RA5 (insn
));
6717 insn_type
= NDS32_INSN_NOT33
;
6721 if (N32_IS_RT4 (insn
) && N32_RT5 (insn
) == N32_RA5 (insn
))
6723 insn16
= N16_TYPE45 (SRAI45
, N32_RT54 (insn
), N32_UB5 (insn
));
6724 insn_type
= NDS32_INSN_SRAI45
;
6729 if (N32_IS_RT4 (insn
) && N32_RT5 (insn
) == N32_RA5 (insn
))
6731 insn16
= N16_TYPE45 (SRLI45
, N32_RT54 (insn
), N32_UB5 (insn
));
6732 insn_type
= NDS32_INSN_SRLI45
;
6737 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
) && N32_UB5 (insn
) < 8)
6739 insn16
= N16_TYPE333 (SLLI333
, N32_RT5 (insn
), N32_RA5 (insn
),
6741 insn_type
= NDS32_INSN_SLLI333
;
6746 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
))
6748 insn16
= N16_BFMI333 (ZEH33
, N32_RT5 (insn
), N32_RA5 (insn
));
6749 insn_type
= NDS32_INSN_ZEH33
;
6754 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
))
6756 insn16
= N16_BFMI333 (SEB33
, N32_RT5 (insn
), N32_RA5 (insn
));
6757 insn_type
= NDS32_INSN_SEB33
;
6762 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
))
6764 insn16
= N16_BFMI333 (SEH33
, N32_RT5 (insn
), N32_RA5 (insn
));
6765 insn_type
= NDS32_INSN_SEH33
;
6770 if (N32_RT5 (insn
) == REG_R15
&& N32_IS_RA4 (insn
))
6773 insn16
= N16_TYPE45 (SLT45
, N32_RA54 (insn
), N32_RB5 (insn
));
6774 insn_type
= NDS32_INSN_SLT45
;
6779 if (N32_RT5 (insn
) == REG_R15
&& N32_IS_RA4 (insn
))
6782 insn16
= N16_TYPE45 (SLTS45
, N32_RA54 (insn
), N32_RB5 (insn
));
6783 insn_type
= NDS32_INSN_SLTS45
;
6788 if ((insn16
& 0x8000) == 0)
6794 *pinsn_type
= insn_type
;
6799 nds32_convert_32_to_16_alu2 (bfd
*abfd
, uint32_t insn
, uint16_t *pinsn16
,
6802 uint16_t insn16
= 0;
6804 unsigned long mach
= bfd_get_mach (abfd
);
6806 /* TODO: bset, bclr, btgl, btst. */
6807 if (__GF (insn
, 6, 4) != 0)
6810 switch (N32_IMMU (insn
, 6))
6813 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
6814 && N32_IS_RB3 (insn
))
6816 if (N32_RT5 (insn
) == N32_RA5 (insn
))
6817 insn16
= N16_MISC33 (MUL33
, N32_RT5 (insn
), N32_RB5 (insn
));
6818 else if (N32_RT5 (insn
) == N32_RB5 (insn
))
6819 insn16
= N16_MISC33 (MUL33
, N32_RT5 (insn
), N32_RA5 (insn
));
6821 insn_type
= NDS32_INSN_MUL33
;
6825 if ((insn16
& 0x8000) == 0)
6831 *pinsn_type
= insn_type
;
6836 nds32_convert_32_to_16 (bfd
*abfd
, uint32_t insn
, uint16_t *pinsn16
,
6840 uint16_t insn16
= 0;
6842 unsigned long mach
= bfd_get_mach (abfd
);
6844 /* Decode 32-bit instruction. */
6845 if (insn
& 0x80000000)
6847 /* Not 32-bit insn. */
6851 op6
= N32_OP6 (insn
);
6853 /* Convert it to 16-bit instruction. */
6857 if (IS_WITHIN_S (N32_IMM20S (insn
), 5))
6859 insn16
= N16_TYPE55 (MOVI55
, N32_RT5 (insn
), N32_IMM20S (insn
));
6860 insn_type
= NDS32_INSN_MOVI55
;
6862 else if (mach
>= MACH_V3
&& N32_IMM20S (insn
) >= 16
6863 && N32_IMM20S (insn
) < 48 && N32_IS_RT4 (insn
))
6865 insn16
= N16_TYPE45 (MOVPI45
, N32_RT54 (insn
),
6866 N32_IMM20S (insn
) - 16);
6867 insn_type
= NDS32_INSN_MOVPI45
;
6872 if (N32_IMM15S (insn
) == 0)
6874 /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp',
6875 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
6877 || N32_RT5 (insn
) != REG_SP
|| N32_RA5 (insn
) != REG_SP
)
6879 insn16
= N16_TYPE55 (MOV55
, N32_RT5 (insn
), N32_RA5 (insn
));
6880 insn_type
= NDS32_INSN_MOV55
;
6883 else if (N32_IMM15S (insn
) > 0)
6885 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
) && N32_IMM15S (insn
) < 8)
6887 insn16
= N16_TYPE333 (ADDI333
, N32_RT5 (insn
), N32_RA5 (insn
),
6889 insn_type
= NDS32_INSN_ADDI333
;
6891 else if (N32_IS_RT4 (insn
) && N32_RT5 (insn
) == N32_RA5 (insn
)
6892 && N32_IMM15S (insn
) < 32)
6894 insn16
= N16_TYPE45 (ADDI45
, N32_RT54 (insn
), N32_IMM15S (insn
));
6895 insn_type
= NDS32_INSN_ADDI45
;
6897 else if (mach
>= MACH_V2
&& N32_RT5 (insn
) == REG_SP
6898 && N32_RT5 (insn
) == N32_RA5 (insn
)
6899 && N32_IMM15S (insn
) < 512)
6901 insn16
= N16_TYPE10 (ADDI10S
, N32_IMM15S (insn
));
6902 insn_type
= NDS32_INSN_ADDI10_SP
;
6904 else if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
)
6905 && N32_RA5 (insn
) == REG_SP
&& N32_IMM15S (insn
) < 256
6906 && (N32_IMM15S (insn
) % 4 == 0))
6908 insn16
= N16_TYPE36 (ADDRI36_SP
, N32_RT5 (insn
),
6909 N32_IMM15S (insn
) >> 2);
6910 insn_type
= NDS32_INSN_ADDRI36_SP
;
6916 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
) && N32_IMM15S (insn
) > -8)
6918 insn16
= N16_TYPE333 (SUBI333
, N32_RT5 (insn
), N32_RA5 (insn
),
6919 0 - N32_IMM15S (insn
));
6920 insn_type
= NDS32_INSN_SUBI333
;
6922 else if (N32_IS_RT4 (insn
) && N32_RT5 (insn
) == N32_RA5 (insn
)
6923 && N32_IMM15S (insn
) > -32)
6925 insn16
= N16_TYPE45 (SUBI45
, N32_RT54 (insn
),
6926 0 - N32_IMM15S (insn
));
6927 insn_type
= NDS32_INSN_SUBI45
;
6929 else if (mach
>= MACH_V2
&& N32_RT5 (insn
) == REG_SP
6930 && N32_RT5 (insn
) == N32_RA5 (insn
)
6931 && N32_IMM15S (insn
) >= -512)
6933 insn16
= N16_TYPE10 (ADDI10S
, N32_IMM15S (insn
));
6934 insn_type
= NDS32_INSN_ADDI10_SP
;
6940 if (N32_IMM15S (insn
) == 0)
6942 /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp',
6943 because `mov55 $sp, $sp' is ifret16 in V3 ISA. */
6945 || N32_RT5 (insn
) != REG_SP
|| N32_RA5 (insn
) != REG_SP
)
6947 insn16
= N16_TYPE55 (MOV55
, N32_RT5 (insn
), N32_RA5 (insn
));
6948 insn_type
= NDS32_INSN_MOV55
;
6954 if (mach
>= MACH_V3
&& N32_IS_RT3 (insn
)
6955 && N32_IS_RA3 (insn
) && N32_IMM15S (insn
) == 0)
6957 insn16
= N16_MISC33 (NEG33
, N32_RT5 (insn
), N32_RA5 (insn
));
6958 insn_type
= NDS32_INSN_NEG33
;
6963 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
))
6965 if (N32_IMM15U (insn
) == 1)
6967 insn16
= N16_BFMI333 (XLSB33
, N32_RT5 (insn
), N32_RA5 (insn
));
6968 insn_type
= NDS32_INSN_XLSB33
;
6970 else if (N32_IMM15U (insn
) == 0x7ff)
6972 insn16
= N16_BFMI333 (X11B33
, N32_RT5 (insn
), N32_RA5 (insn
));
6973 insn_type
= NDS32_INSN_X11B33
;
6975 else if (N32_IMM15U (insn
) == 0xff)
6977 insn16
= N16_BFMI333 (ZEB33
, N32_RT5 (insn
), N32_RA5 (insn
));
6978 insn_type
= NDS32_INSN_ZEB33
;
6980 else if (mach
>= MACH_V3
&& N32_RT5 (insn
) == N32_RA5 (insn
)
6981 && N32_IMM15U (insn
) < 256)
6983 int imm15u
= N32_IMM15U (insn
);
6985 if (__builtin_popcount (imm15u
) == 1)
6988 int imm3u
= __builtin_ctz (imm15u
);
6990 insn16
= N16_BFMI333 (BMSKI33
, N32_RT5 (insn
), imm3u
);
6991 insn_type
= NDS32_INSN_BMSKI33
;
6993 else if (imm15u
!= 0 && __builtin_popcount (imm15u
+ 1) == 1)
6996 int imm3u
= __builtin_ctz (imm15u
+ 1) - 1;
6998 insn16
= N16_BFMI333 (FEXTI33
, N32_RT5 (insn
), imm3u
);
6999 insn_type
= NDS32_INSN_FEXTI33
;
7006 if (N32_RT5 (insn
) == REG_R15
&& N32_IS_RA4 (insn
)
7007 && IS_WITHIN_U (N32_IMM15S (insn
), 5))
7009 insn16
= N16_TYPE45 (SLTI45
, N32_RA54 (insn
), N32_IMM15S (insn
));
7010 insn_type
= NDS32_INSN_SLTI45
;
7015 if (N32_RT5 (insn
) == REG_R15
&& N32_IS_RA4 (insn
)
7016 && IS_WITHIN_U (N32_IMM15S (insn
), 5))
7018 insn16
= N16_TYPE45 (SLTSI45
, N32_RA54 (insn
), N32_IMM15S (insn
));
7019 insn_type
= NDS32_INSN_SLTSI45
;
7024 if (N32_IS_RT4 (insn
) && N32_IMM15S (insn
) == 0)
7026 insn16
= N16_TYPE45 (LWI450
, N32_RT54 (insn
), N32_RA5 (insn
));
7027 insn_type
= NDS32_INSN_LWI450
;
7029 else if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7030 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7032 insn16
= N16_TYPE333 (LWI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7034 insn_type
= NDS32_INSN_LWI333
;
7036 else if (N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_FP
7037 && IS_WITHIN_U (N32_IMM15S (insn
), 7))
7039 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 0, N32_IMM15S (insn
));
7040 insn_type
= NDS32_INSN_LWI37
;
7042 else if (mach
>= MACH_V2
&& N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_SP
7043 && IS_WITHIN_U (N32_IMM15S (insn
), 7))
7045 insn16
= N16_TYPE37 (XWI37SP
, N32_RT5 (insn
), 0, N32_IMM15S (insn
));
7046 insn_type
= NDS32_INSN_LWI37_SP
;
7048 else if (mach
>= MACH_V2
&& N32_IS_RT4 (insn
) && N32_RA5 (insn
) == REG_R8
7049 && -32 <= N32_IMM15S (insn
) && N32_IMM15S (insn
) < 0)
7051 insn16
= N16_TYPE45 (LWI45_FE
, N32_RT54 (insn
),
7052 N32_IMM15S (insn
) + 32);
7053 insn_type
= NDS32_INSN_LWI45_FE
;
7058 if (N32_IS_RT4 (insn
) && N32_IMM15S (insn
) == 0)
7060 insn16
= N16_TYPE45 (SWI450
, N32_RT54 (insn
), N32_RA5 (insn
));
7061 insn_type
= NDS32_INSN_SWI450
;
7063 else if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7064 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7066 insn16
= N16_TYPE333 (SWI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7068 insn_type
= NDS32_INSN_SWI333
;
7070 else if (N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_FP
7071 && IS_WITHIN_U (N32_IMM15S (insn
), 7))
7073 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 1, N32_IMM15S (insn
));
7074 insn_type
= NDS32_INSN_SWI37
;
7076 else if (mach
>= MACH_V2
&& N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_SP
7077 && IS_WITHIN_U (N32_IMM15S (insn
), 7))
7079 insn16
= N16_TYPE37 (XWI37SP
, N32_RT5 (insn
), 1, N32_IMM15S (insn
));
7080 insn_type
= NDS32_INSN_SWI37_SP
;
7084 case N32_OP6_LWI_BI
:
7085 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7086 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7088 insn16
= N16_TYPE333 (LWI333_BI
, N32_RT5 (insn
), N32_RA5 (insn
),
7090 insn_type
= NDS32_INSN_LWI333_BI
;
7094 case N32_OP6_SWI_BI
:
7095 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7096 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7098 insn16
= N16_TYPE333 (SWI333_BI
, N32_RT5 (insn
), N32_RA5 (insn
),
7100 insn_type
= NDS32_INSN_SWI333_BI
;
7105 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7106 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7108 insn16
= N16_TYPE333 (LHI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7110 insn_type
= NDS32_INSN_LHI333
;
7115 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7116 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7118 insn16
= N16_TYPE333 (SHI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7120 insn_type
= NDS32_INSN_SHI333
;
7125 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7126 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7128 insn16
= N16_TYPE333 (LBI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7130 insn_type
= NDS32_INSN_LBI333
;
7135 if (N32_IS_RT3 (insn
) && N32_IS_RA3 (insn
)
7136 && IS_WITHIN_U (N32_IMM15S (insn
), 3))
7138 insn16
= N16_TYPE333 (SBI333
, N32_RT5 (insn
), N32_RA5 (insn
),
7140 insn_type
= NDS32_INSN_SBI333
;
7145 return nds32_convert_32_to_16_alu1 (abfd
, insn
, pinsn16
, pinsn_type
);
7148 return nds32_convert_32_to_16_alu2 (abfd
, insn
, pinsn16
, pinsn_type
);
7151 if (!IS_WITHIN_S (N32_IMM14S (insn
), 8))
7154 if ((insn
& N32_BIT (14)) == 0)
7157 if (N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_R5
7158 && N32_RT5 (insn
) != REG_R5
)
7159 insn16
= N16_TYPE38 (BEQS38
, N32_RT5 (insn
), N32_IMM14S (insn
));
7160 else if (N32_IS_RA3 (insn
) && N32_RT5 (insn
) == REG_R5
7161 && N32_RA5 (insn
) != REG_R5
)
7162 insn16
= N16_TYPE38 (BEQS38
, N32_RA5 (insn
), N32_IMM14S (insn
));
7163 insn_type
= NDS32_INSN_BEQS38
;
7169 if (N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_R5
7170 && N32_RT5 (insn
) != REG_R5
)
7171 insn16
= N16_TYPE38 (BNES38
, N32_RT5 (insn
), N32_IMM14S (insn
));
7172 else if (N32_IS_RA3 (insn
) && N32_RT5 (insn
) == REG_R5
7173 && N32_RA5 (insn
) != REG_R5
)
7174 insn16
= N16_TYPE38 (BNES38
, N32_RA5 (insn
), N32_IMM14S (insn
));
7175 insn_type
= NDS32_INSN_BNES38
;
7181 switch (N32_BR2_SUB (insn
))
7184 if (N32_IS_RT3 (insn
) && IS_WITHIN_S (N32_IMM16S (insn
), 8))
7186 insn16
= N16_TYPE38 (BEQZ38
, N32_RT5 (insn
), N32_IMM16S (insn
));
7187 insn_type
= NDS32_INSN_BEQZ38
;
7189 else if (N32_RT5 (insn
) == REG_R15
7190 && IS_WITHIN_S (N32_IMM16S (insn
), 8))
7192 insn16
= N16_TYPE8 (BEQZS8
, N32_IMM16S (insn
));
7193 insn_type
= NDS32_INSN_BEQZS8
;
7198 if (N32_IS_RT3 (insn
) && IS_WITHIN_S (N32_IMM16S (insn
), 8))
7200 insn16
= N16_TYPE38 (BNEZ38
, N32_RT5 (insn
), N32_IMM16S (insn
));
7201 insn_type
= NDS32_INSN_BNEZ38
;
7203 else if (N32_RT5 (insn
) == REG_R15
7204 && IS_WITHIN_S (N32_IMM16S (insn
), 8))
7206 insn16
= N16_TYPE8 (BNEZS8
, N32_IMM16S (insn
));
7207 insn_type
= NDS32_INSN_BNEZS8
;
7211 case N32_BR2_IFCALL
:
7212 if (IS_WITHIN_U (N32_IMM16S (insn
), 9))
7214 insn16
= N16_TYPE9 (IFCALL9
, N32_IMM16S (insn
));
7215 insn_type
= NDS32_INSN_IFCALL9
;
7222 if ((insn
& N32_BIT (24)) == 0)
7225 if (IS_WITHIN_S (N32_IMM24S (insn
), 8))
7227 insn16
= N16_TYPE8 (J8
, N32_IMM24S (insn
));
7228 insn_type
= NDS32_INSN_J8
;
7234 if (__GF (insn
, 8, 2) != 0)
7237 switch (N32_IMMU (insn
, 5))
7240 if (N32_JREG_HINT (insn
) == 0)
7243 insn16
= N16_TYPE5 (JR5
, N32_RB5 (insn
));
7244 insn_type
= NDS32_INSN_JR5
;
7246 else if (N32_JREG_HINT (insn
) == 1)
7249 insn16
= N16_TYPE5 (RET5
, N32_RB5 (insn
));
7250 insn_type
= NDS32_INSN_RET5
;
7252 else if (N32_JREG_HINT (insn
) == 3)
7254 /* ifret = mov55 $sp, $sp */
7255 insn16
= N16_TYPE55 (MOV55
, REG_SP
, REG_SP
);
7256 insn_type
= NDS32_INSN_IFRET
;
7261 /* It's convertible when return rt5 is $lp and address
7262 translation is kept. */
7263 if (N32_RT5 (insn
) == REG_LP
&& N32_JREG_HINT (insn
) == 0)
7265 insn16
= N16_TYPE5 (JRAL5
, N32_RB5 (insn
));
7266 insn_type
= NDS32_INSN_JRAL5
;
7273 if (N32_SUB5 (insn
) == N32_MISC_BREAK
&& N32_SWID (insn
) < 32)
7275 /* For v3, swid above 31 are used for ex9.it. */
7276 insn16
= N16_TYPE5 (BREAK16
, N32_SWID (insn
));
7277 insn_type
= NDS32_INSN_BREAK16
;
7282 /* This instruction has no 16-bit variant. */
7287 /* Bit-15 of insn16 should be set for a valid instruction. */
7288 if ((insn16
& 0x8000) == 0)
7294 *pinsn_type
= insn_type
;
7299 special_convert_32_to_16 (unsigned long insn
, uint16_t *pinsn16
,
7300 Elf_Internal_Rela
*reloc
)
7302 uint16_t insn16
= 0;
7304 if ((reloc
->r_addend
& R_NDS32_INSN16_FP7U2_FLAG
) == 0
7305 || (ELF32_R_TYPE (reloc
->r_info
) != R_NDS32_INSN16
))
7308 if (!N32_IS_RT3 (insn
))
7311 switch (N32_OP6 (insn
))
7314 if (N32_RA5 (insn
) == REG_GP
&& IS_WITHIN_U (N32_IMM15S (insn
), 7))
7315 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 0, N32_IMM15S (insn
));
7318 if (N32_RA5 (insn
) == REG_GP
&& IS_WITHIN_U (N32_IMM15S (insn
), 7))
7319 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 1, N32_IMM15S (insn
));
7322 if (!IS_WITHIN_U (N32_IMM17S (insn
), 7))
7325 if (__GF (insn
, 17, 3) == 6)
7326 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 0, N32_IMM17S (insn
));
7327 else if (__GF (insn
, 17, 3) == 7)
7328 insn16
= N16_TYPE37 (XWI37
, N32_RT5 (insn
), 1, N32_IMM17S (insn
));
7332 if ((insn16
& 0x8000) == 0)
7339 /* Convert a 16-bit instruction to 32-bit one.
7340 INSN16 it the input and PINSN it the point to output.
7341 Return non-zero on successful. Otherwise 0 is returned. */
7344 nds32_convert_16_to_32 (bfd
*abfd
, uint16_t insn16
, uint32_t *pinsn
)
7346 uint32_t insn
= 0xffffffff;
7347 unsigned long mach
= bfd_get_mach (abfd
);
7349 /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */
7351 switch (__GF (insn16
, 9, 6))
7353 case 0x4: /* add45 */
7354 insn
= N32_ALU1 (ADD
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7357 case 0x5: /* sub45 */
7358 insn
= N32_ALU1 (SUB
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7361 case 0x6: /* addi45 */
7362 insn
= N32_TYPE2 (ADDI
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7363 N16_IMM5U (insn16
));
7365 case 0x7: /* subi45 */
7366 insn
= N32_TYPE2 (ADDI
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7367 -N16_IMM5U (insn16
));
7369 case 0x8: /* srai45 */
7370 insn
= N32_ALU1 (SRAI
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7371 N16_IMM5U (insn16
));
7373 case 0x9: /* srli45 */
7374 insn
= N32_ALU1 (SRLI
, N16_RT4 (insn16
), N16_RT4 (insn16
),
7375 N16_IMM5U (insn16
));
7377 case 0xa: /* slli333 */
7378 insn
= N32_ALU1 (SLLI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7379 N16_IMM3U (insn16
));
7381 case 0xc: /* add333 */
7382 insn
= N32_ALU1 (ADD
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7385 case 0xd: /* sub333 */
7386 insn
= N32_ALU1 (SUB
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7389 case 0xe: /* addi333 */
7390 insn
= N32_TYPE2 (ADDI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7391 N16_IMM3U (insn16
));
7393 case 0xf: /* subi333 */
7394 insn
= N32_TYPE2 (ADDI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7395 -N16_IMM3U (insn16
));
7397 case 0x10: /* lwi333 */
7398 insn
= N32_TYPE2 (LWI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7399 N16_IMM3U (insn16
));
7401 case 0x12: /* lhi333 */
7402 insn
= N32_TYPE2 (LHI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7403 N16_IMM3U (insn16
));
7405 case 0x13: /* lbi333 */
7406 insn
= N32_TYPE2 (LBI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7407 N16_IMM3U (insn16
));
7409 case 0x11: /* lwi333.bi */
7410 insn
= N32_TYPE2 (LWI_BI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7411 N16_IMM3U (insn16
));
7413 case 0x14: /* swi333 */
7414 insn
= N32_TYPE2 (SWI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7415 N16_IMM3U (insn16
));
7417 case 0x16: /* shi333 */
7418 insn
= N32_TYPE2 (SHI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7419 N16_IMM3U (insn16
));
7421 case 0x17: /* sbi333 */
7422 insn
= N32_TYPE2 (SBI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7423 N16_IMM3U (insn16
));
7425 case 0x15: /* swi333.bi */
7426 insn
= N32_TYPE2 (SWI_BI
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7427 N16_IMM3U (insn16
));
7429 case 0x18: /* addri36.sp */
7430 insn
= N32_TYPE2 (ADDI
, N16_RT3 (insn16
), REG_SP
,
7431 N16_IMM6U (insn16
) << 2);
7433 case 0x19: /* lwi45.fe */
7434 insn
= N32_TYPE2 (LWI
, N16_RT4 (insn16
), REG_R8
,
7435 (N16_IMM5U (insn16
) - 32));
7437 case 0x1a: /* lwi450 */
7438 insn
= N32_TYPE2 (LWI
, N16_RT4 (insn16
), N16_RA5 (insn16
), 0);
7440 case 0x1b: /* swi450 */
7441 insn
= N32_TYPE2 (SWI
, N16_RT4 (insn16
), N16_RA5 (insn16
), 0);
7444 /* These are r15 implied instructions. */
7445 case 0x30: /* slts45 */
7446 insn
= N32_ALU1 (SLTS
, REG_TA
, N16_RT4 (insn16
), N16_RA5 (insn16
));
7448 case 0x31: /* slt45 */
7449 insn
= N32_ALU1 (SLT
, REG_TA
, N16_RT4 (insn16
), N16_RA5 (insn16
));
7451 case 0x32: /* sltsi45 */
7452 insn
= N32_TYPE2 (SLTSI
, REG_TA
, N16_RT4 (insn16
), N16_IMM5U (insn16
));
7454 case 0x33: /* slti45 */
7455 insn
= N32_TYPE2 (SLTI
, REG_TA
, N16_RT4 (insn16
), N16_IMM5U (insn16
));
7457 case 0x34: /* beqzs8, bnezs8 */
7458 if (insn16
& N32_BIT (8))
7459 insn
= N32_BR2 (BNEZ
, REG_TA
, N16_IMM8S (insn16
));
7461 insn
= N32_BR2 (BEQZ
, REG_TA
, N16_IMM8S (insn16
));
7464 case 0x35: /* break16, ex9.it */
7465 /* Only consider range of v3 break16. */
7466 insn
= N32_TYPE0 (MISC
, (N16_IMM5U (insn16
) << 5) | N32_MISC_BREAK
);
7469 case 0x3c: /* ifcall9 */
7470 insn
= N32_BR2 (IFCALL
, 0, N16_IMM9U (insn16
));
7472 case 0x3d: /* movpi45 */
7473 insn
= N32_TYPE1 (MOVI
, N16_RT4 (insn16
), N16_IMM5U (insn16
) + 16);
7476 case 0x3f: /* MISC33 */
7477 switch (insn16
& 0x7)
7480 insn
= N32_TYPE2 (SUBRI
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0);
7483 insn
= N32_ALU1 (NOR
, N16_RT3 (insn16
), N16_RA3 (insn16
),
7487 insn
= N32_ALU2 (MUL
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7491 insn
= N32_ALU1 (XOR
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7495 insn
= N32_ALU1 (AND
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7499 insn
= N32_ALU1 (OR
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7506 switch (insn16
& 0x7)
7509 insn
= N32_TYPE2 (ANDI
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0xff);
7512 insn
= N32_ALU1 (ZEH
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0);
7515 insn
= N32_ALU1 (SEB
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0);
7518 insn
= N32_ALU1 (SEH
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0);
7520 case 4: /* xlsb33 */
7521 insn
= N32_TYPE2 (ANDI
, N16_RT3 (insn16
), N16_RA3 (insn16
), 1);
7523 case 5: /* x11b33 */
7524 insn
= N32_TYPE2 (ANDI
, N16_RT3 (insn16
), N16_RA3 (insn16
), 0x7ff);
7526 case 6: /* bmski33 */
7527 insn
= N32_TYPE2 (ANDI
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7528 1 << __GF (insn16
, 3, 3));
7530 case 7: /* fexti33 */
7531 insn
= N32_TYPE2 (ANDI
, N16_RT3 (insn16
), N16_RT3 (insn16
),
7532 (1 << (__GF (insn16
, 3, 3) + 1)) - 1);
7538 switch (__GF (insn16
, 10, 5))
7540 case 0x0: /* mov55 or ifret16 */
7541 if (mach
>= MACH_V3
&& N16_RT5 (insn16
) == REG_SP
7542 && N16_RT5 (insn16
) == N16_RA5 (insn16
))
7543 insn
= N32_JREG (JR
, 0, 0, 0, 3);
7545 insn
= N32_TYPE2 (ADDI
, N16_RT5 (insn16
), N16_RA5 (insn16
), 0);
7547 case 0x1: /* movi55 */
7548 insn
= N32_TYPE1 (MOVI
, N16_RT5 (insn16
), N16_IMM5S (insn16
));
7550 case 0x1b: /* addi10s (V2) */
7551 insn
= N32_TYPE2 (ADDI
, REG_SP
, REG_SP
, N16_IMM10S (insn16
));
7555 switch (__GF (insn16
, 11, 4))
7557 case 0x7: /* lwi37.fp/swi37.fp */
7558 if (insn16
& N32_BIT (7)) /* swi37.fp */
7559 insn
= N32_TYPE2 (SWI
, N16_RT38 (insn16
), REG_FP
, N16_IMM7U (insn16
));
7561 insn
= N32_TYPE2 (LWI
, N16_RT38 (insn16
), REG_FP
, N16_IMM7U (insn16
));
7563 case 0x8: /* beqz38 */
7564 insn
= N32_BR2 (BEQZ
, N16_RT38 (insn16
), N16_IMM8S (insn16
));
7566 case 0x9: /* bnez38 */
7567 insn
= N32_BR2 (BNEZ
, N16_RT38 (insn16
), N16_IMM8S (insn16
));
7569 case 0xa: /* beqs38/j8, implied r5 */
7570 if (N16_RT38 (insn16
) == 5)
7571 insn
= N32_JI (J
, N16_IMM8S (insn16
));
7573 insn
= N32_BR1 (BEQ
, N16_RT38 (insn16
), REG_R5
, N16_IMM8S (insn16
));
7575 case 0xb: /* bnes38 and others */
7576 if (N16_RT38 (insn16
) == 5)
7578 switch (__GF (insn16
, 5, 3))
7581 insn
= N32_JREG (JR
, 0, N16_RA5 (insn16
), 0, 0);
7584 insn
= N32_JREG (JR
, 0, N16_RA5 (insn16
), 0, 1);
7587 insn
= N32_JREG (JRAL
, REG_LP
, N16_RA5 (insn16
), 0, 0);
7589 case 2: /* ex9.it imm5 */
7590 /* ex9.it had no 32-bit variantl. */
7592 case 5: /* add5.pc */
7593 /* add5.pc had no 32-bit variantl. */
7598 insn
= N32_BR1 (BNE
, N16_RT38 (insn16
), REG_R5
, N16_IMM8S (insn16
));
7600 case 0xe: /* lwi37/swi37 */
7601 if (insn16
& (1 << 7)) /* swi37.sp */
7602 insn
= N32_TYPE2 (SWI
, N16_RT38 (insn16
), REG_SP
, N16_IMM7U (insn16
));
7604 insn
= N32_TYPE2 (LWI
, N16_RT38 (insn16
), REG_SP
, N16_IMM7U (insn16
));
7609 if (insn
& 0x80000000)
7618 is_sda_access_insn (unsigned long insn
)
7620 switch (N32_OP6 (insn
))
7641 static unsigned long
7642 turn_insn_to_sda_access (uint32_t insn
, bfd_signed_vma type
, uint32_t *pinsn
)
7648 case R_NDS32_GOT_LO12
:
7649 case R_NDS32_GOTOFF_LO12
:
7650 case R_NDS32_PLTREL_LO12
:
7651 case R_NDS32_PLT_GOTREL_LO12
:
7652 case R_NDS32_LO12S0_RELA
:
7653 switch (N32_OP6 (insn
))
7657 oinsn
= N32_TYPE1 (LBGP
, N32_RT5 (insn
), 0);
7661 oinsn
= N32_TYPE1 (LBGP
, N32_RT5 (insn
), N32_BIT (19));
7665 oinsn
= N32_TYPE1 (SBGP
, N32_RT5 (insn
), 0);
7669 oinsn
= N32_TYPE1 (SBGP
, N32_RT5 (insn
), N32_BIT (19));
7674 case R_NDS32_LO12S1_RELA
:
7675 switch (N32_OP6 (insn
))
7679 oinsn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), 0);
7683 oinsn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), N32_BIT (18));
7687 oinsn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), N32_BIT (19));
7692 case R_NDS32_LO12S2_RELA
:
7693 switch (N32_OP6 (insn
))
7697 oinsn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), __MF (6, 17, 3));
7701 oinsn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), __MF (7, 17, 3));
7706 case R_NDS32_LO12S2_DP_RELA
:
7707 case R_NDS32_LO12S2_SP_RELA
:
7708 oinsn
= (insn
& 0x7ff07000) | (REG_GP
<< 15);
7718 /* Linker hasn't found the correct merge section for non-section symbol
7719 in relax time, this work is left to the function elf_link_input_bfd().
7720 So for non-section symbol, _bfd_merged_section_offset is also needed
7721 to find the correct symbol address. */
7724 nds32_elf_rela_local_sym (bfd
*abfd
, Elf_Internal_Sym
*sym
,
7725 asection
**psec
, Elf_Internal_Rela
*rel
)
7727 asection
*sec
= *psec
;
7730 relocation
= (sec
->output_section
->vma
7731 + sec
->output_offset
+ sym
->st_value
);
7732 if ((sec
->flags
& SEC_MERGE
) && sec
->sec_info_type
== SEC_INFO_TYPE_MERGE
)
7734 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
7736 _bfd_merged_section_offset (abfd
, psec
,
7737 elf_section_data (sec
)->sec_info
,
7738 sym
->st_value
+ rel
->r_addend
);
7741 _bfd_merged_section_offset (abfd
, psec
,
7742 elf_section_data (sec
)->sec_info
,
7743 sym
->st_value
) + rel
->r_addend
;
7747 /* If we have changed the section, and our original section is
7748 marked with SEC_EXCLUDE, it means that the original
7749 SEC_MERGE section has been completely subsumed in some
7750 other SEC_MERGE section. In this case, we need to leave
7751 some info around for --emit-relocs. */
7752 if ((sec
->flags
& SEC_EXCLUDE
) != 0)
7753 sec
->kept_section
= *psec
;
7756 rel
->r_addend
-= relocation
;
7757 rel
->r_addend
+= sec
->output_section
->vma
+ sec
->output_offset
;
7763 calculate_memory_address (bfd
*abfd
, Elf_Internal_Rela
*irel
,
7764 Elf_Internal_Sym
*isymbuf
,
7765 Elf_Internal_Shdr
*symtab_hdr
)
7767 bfd_signed_vma foff
;
7768 bfd_vma symval
, addend
;
7769 Elf_Internal_Rela irel_fn
;
7770 Elf_Internal_Sym
*isym
;
7773 /* Get the value of the symbol referred to by the reloc. */
7774 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
7776 /* A local symbol. */
7777 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
7779 if (isym
->st_shndx
== SHN_UNDEF
)
7780 sym_sec
= bfd_und_section_ptr
;
7781 else if (isym
->st_shndx
== SHN_ABS
)
7782 sym_sec
= bfd_abs_section_ptr
;
7783 else if (isym
->st_shndx
== SHN_COMMON
)
7784 sym_sec
= bfd_com_section_ptr
;
7786 sym_sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
7787 memcpy (&irel_fn
, irel
, sizeof (Elf_Internal_Rela
));
7788 symval
= nds32_elf_rela_local_sym (abfd
, isym
, &sym_sec
, &irel_fn
);
7789 addend
= irel_fn
.r_addend
;
7794 struct elf_link_hash_entry
*h
;
7796 /* An external symbol. */
7797 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
7798 h
= elf_sym_hashes (abfd
)[indx
];
7799 BFD_ASSERT (h
!= NULL
);
7801 while (h
->root
.type
== bfd_link_hash_indirect
7802 || h
->root
.type
== bfd_link_hash_warning
)
7803 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7805 if (h
->root
.type
!= bfd_link_hash_defined
7806 && h
->root
.type
!= bfd_link_hash_defweak
)
7807 /* This appears to be a reference to an undefined
7808 symbol. Just ignore it--it will be caught by the
7809 regular reloc processing. */
7812 if (h
->root
.u
.def
.section
->flags
& SEC_MERGE
)
7814 sym_sec
= h
->root
.u
.def
.section
;
7815 symval
= _bfd_merged_section_offset (abfd
, &sym_sec
, elf_section_data
7816 (sym_sec
)->sec_info
, h
->root
.u
.def
.value
);
7817 symval
= symval
+ sym_sec
->output_section
->vma
7818 + sym_sec
->output_offset
;
7821 symval
= (h
->root
.u
.def
.value
7822 + h
->root
.u
.def
.section
->output_section
->vma
7823 + h
->root
.u
.def
.section
->output_offset
);
7824 addend
= irel
->r_addend
;
7827 foff
= symval
+ addend
;
7833 calculate_got_memory_address (bfd
*abfd
, struct bfd_link_info
*link_info
,
7834 Elf_Internal_Rela
*irel
,
7835 Elf_Internal_Shdr
*symtab_hdr
)
7838 bfd_vma
*local_got_offsets
;
7839 /* Get the value of the symbol referred to by the reloc. */
7840 struct elf_link_hash_entry
*h
;
7841 struct elf_nds32_link_hash_table
*htab
= nds32_elf_hash_table (link_info
);
7843 /* An external symbol. */
7844 symndx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
7845 h
= elf_sym_hashes (abfd
)[symndx
];
7846 while (h
->root
.type
== bfd_link_hash_indirect
7847 || h
->root
.type
== bfd_link_hash_warning
)
7848 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7852 BFD_ASSERT (h
!= NULL
);
7853 return (htab
->root
.sgot
->output_section
->vma
7854 + htab
->root
.sgot
->output_offset
7859 local_got_offsets
= elf_local_got_offsets (abfd
);
7860 BFD_ASSERT (local_got_offsets
!= NULL
);
7861 return (htab
->root
.sgot
->output_section
->vma
7862 + htab
->root
.sgot
->output_offset
7863 + local_got_offsets
[ELF32_R_SYM (irel
->r_info
)]);
7866 /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */
7867 /* The check of h->root.type is passed. */
7871 is_16bit_NOP (bfd
*abfd ATTRIBUTE_UNUSED
,
7872 asection
*sec
, Elf_Internal_Rela
*rel
)
7875 unsigned short insn16
;
7877 if (!(rel
->r_addend
& R_NDS32_INSN16_CONVERT_FLAG
))
7879 contents
= elf_section_data (sec
)->this_hdr
.contents
;
7880 insn16
= bfd_getb16 (contents
+ rel
->r_offset
);
7881 if (insn16
== NDS32_NOP16
)
7886 /* It checks whether the instruction could be converted to
7887 16-bit form and returns the converted one.
7889 `internal_relocs' is supposed to be sorted. */
7892 is_convert_32_to_16 (bfd
*abfd
, asection
*sec
,
7893 Elf_Internal_Rela
*reloc
,
7894 Elf_Internal_Rela
*internal_relocs
,
7895 Elf_Internal_Rela
*irelend
,
7898 #define NORMAL_32_TO_16 (1 << 0)
7899 #define SPECIAL_32_TO_16 (1 << 1)
7900 bfd_byte
*contents
= NULL
;
7904 Elf_Internal_Rela
*pc_rel
;
7905 int pic_ext_target
= 0;
7906 Elf_Internal_Shdr
*symtab_hdr
;
7907 Elf_Internal_Sym
*isymbuf
= NULL
;
7911 if (reloc
->r_offset
+ 4 > sec
->size
)
7914 offset
= reloc
->r_offset
;
7916 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
))
7918 insn
= bfd_getb32 (contents
+ offset
);
7920 if (nds32_convert_32_to_16 (abfd
, insn
, insn16
, NULL
))
7921 convert_type
= NORMAL_32_TO_16
;
7922 else if (special_convert_32_to_16 (insn
, insn16
, reloc
))
7923 convert_type
= SPECIAL_32_TO_16
;
7927 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
7928 if (!nds32_get_local_syms (abfd
, sec
, &isymbuf
))
7931 /* Find the first relocation of the same relocation-type,
7932 so we iteratie them forward. */
7934 while ((pc_rel
- 1) >= internal_relocs
&& pc_rel
[-1].r_offset
== offset
)
7937 for (; pc_rel
< irelend
&& pc_rel
->r_offset
== offset
; pc_rel
++)
7939 if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_15_PCREL_RELA
7940 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_17_PCREL_RELA
7941 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_25_PCREL_RELA
7942 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_25_PLTREL
)
7944 off
= calculate_offset (abfd
, sec
, pc_rel
, isymbuf
, symtab_hdr
,
7946 if (off
>= ACCURATE_8BIT_S1
|| off
< -ACCURATE_8BIT_S1
7951 else if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_20_RELA
)
7953 /* movi => movi55 */
7954 mem_addr
= calculate_memory_address (abfd
, pc_rel
, isymbuf
,
7956 /* mem_addr is unsigned, but the value should
7957 be between [-16, 15]. */
7958 if ((mem_addr
+ 0x10) >> 5)
7962 else if ((ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_TLS_LE_20
)
7963 || (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_TLS_LE_LO12
))
7965 /* It never happen movi to movi55 for R_NDS32_TLS_LE_20,
7966 because it can be relaxed to addi for TLS_LE_ADD. */
7969 else if ((ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_SDA15S2_RELA
7970 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_SDA17S2_RELA
)
7971 && (reloc
->r_addend
& R_NDS32_INSN16_FP7U2_FLAG
)
7972 && convert_type
== SPECIAL_32_TO_16
)
7975 We've selected a best fp-base for this access, so we can
7976 always resolve it anyway. Do nothing. */
7979 else if ((ELF32_R_TYPE (pc_rel
->r_info
) > R_NDS32_NONE
7980 && (ELF32_R_TYPE (pc_rel
->r_info
) < R_NDS32_RELA_GNU_VTINHERIT
))
7981 || ((ELF32_R_TYPE (pc_rel
->r_info
) > R_NDS32_RELA_GNU_VTENTRY
)
7982 && (ELF32_R_TYPE (pc_rel
->r_info
) < R_NDS32_INSN16
))
7983 || ((ELF32_R_TYPE (pc_rel
->r_info
) > R_NDS32_LOADSTORE
)
7984 && (ELF32_R_TYPE (pc_rel
->r_info
) < R_NDS32_DWARF2_OP1_RELA
)))
7986 /* Prevent unresolved addi instruction translate
7987 to addi45 or addi333. */
7990 else if ((ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_17IFC_PCREL_RELA
))
7992 off
= calculate_offset (abfd
, sec
, pc_rel
, isymbuf
, symtab_hdr
,
7994 if (off
>= ACCURATE_U9BIT_S1
|| off
<= 0)
8004 nds32_elf_write_16 (bfd
*abfd ATTRIBUTE_UNUSED
, bfd_byte
*contents
,
8005 Elf_Internal_Rela
*reloc
,
8006 Elf_Internal_Rela
*internal_relocs
,
8007 Elf_Internal_Rela
*irelend
,
8008 unsigned short insn16
)
8010 Elf_Internal_Rela
*pc_rel
;
8013 offset
= reloc
->r_offset
;
8014 bfd_putb16 (insn16
, contents
+ offset
);
8015 /* Find the first relocation of the same relocation-type,
8016 so we iteratie them forward. */
8018 while ((pc_rel
- 1) > internal_relocs
&& pc_rel
[-1].r_offset
== offset
)
8021 for (; pc_rel
< irelend
&& pc_rel
->r_offset
== offset
; pc_rel
++)
8023 if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_15_PCREL_RELA
8024 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_17_PCREL_RELA
8025 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_25_PCREL_RELA
)
8028 ELF32_R_INFO (ELF32_R_SYM (pc_rel
->r_info
), R_NDS32_9_PCREL_RELA
);
8030 else if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_25_PLTREL
)
8032 ELF32_R_INFO (ELF32_R_SYM (pc_rel
->r_info
), R_NDS32_9_PLTREL
);
8033 else if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_20_RELA
)
8035 ELF32_R_INFO (ELF32_R_SYM (pc_rel
->r_info
), R_NDS32_5_RELA
);
8036 else if (ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_SDA15S2_RELA
8037 || ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_SDA17S2_RELA
)
8039 ELF32_R_INFO (ELF32_R_SYM (pc_rel
->r_info
), R_NDS32_SDA_FP7U2_RELA
);
8040 else if ((ELF32_R_TYPE (pc_rel
->r_info
) == R_NDS32_17IFC_PCREL_RELA
))
8042 ELF32_R_INFO (ELF32_R_SYM (pc_rel
->r_info
), R_NDS32_10IFCU_PCREL_RELA
);
8046 /* Find a relocation of type specified by `reloc_type'
8047 of the same r_offset with reloc.
8048 If not found, return irelend.
8050 Assuming relocations are sorted by r_offset,
8051 we find the relocation from `reloc' backward untill relocs,
8052 or find it from `reloc' forward untill irelend. */
8054 static Elf_Internal_Rela
*
8055 find_relocs_at_address (Elf_Internal_Rela
*reloc
,
8056 Elf_Internal_Rela
*relocs
,
8057 Elf_Internal_Rela
*irelend
,
8058 enum elf_nds32_reloc_type reloc_type
)
8060 Elf_Internal_Rela
*rel_t
;
8062 /* Find backward. */
8064 rel_t
>= relocs
&& rel_t
->r_offset
== reloc
->r_offset
;
8066 if (ELF32_R_TYPE (rel_t
->r_info
) == reloc_type
)
8069 /* We didn't find it backward. Try find it forward. */
8071 rel_t
< irelend
&& rel_t
->r_offset
== reloc
->r_offset
;
8073 if (ELF32_R_TYPE (rel_t
->r_info
) == reloc_type
)
8079 /* Find a relocation of specified type and offset.
8080 `reloc' is just a refence point to find a relocation at specified offset.
8081 If not found, return irelend.
8083 Assuming relocations are sorted by r_offset,
8084 we find the relocation from `reloc' backward untill relocs,
8085 or find it from `reloc' forward untill irelend. */
8087 static Elf_Internal_Rela
*
8088 find_relocs_at_address_addr (Elf_Internal_Rela
*reloc
,
8089 Elf_Internal_Rela
*relocs
,
8090 Elf_Internal_Rela
*irelend
,
8091 enum elf_nds32_reloc_type reloc_type
,
8094 Elf_Internal_Rela
*rel_t
= NULL
;
8096 /* First, we try to find a relocation of offset `offset_p',
8097 and then we use find_relocs_at_address to find specific type. */
8099 if (reloc
->r_offset
> offset_p
)
8101 /* Find backward. */
8103 rel_t
>= relocs
&& rel_t
->r_offset
> offset_p
; rel_t
--)
8106 else if (reloc
->r_offset
< offset_p
)
8110 rel_t
< irelend
&& rel_t
->r_offset
< offset_p
; rel_t
++)
8117 if (rel_t
< relocs
|| rel_t
== irelend
|| rel_t
->r_offset
!= offset_p
)
8120 return find_relocs_at_address (rel_t
, relocs
, irelend
, reloc_type
);
8124 nds32_elf_check_dup_relocs (Elf_Internal_Rela
*reloc
,
8125 Elf_Internal_Rela
*internal_relocs
,
8126 Elf_Internal_Rela
*irelend
,
8127 unsigned char reloc_type
)
8129 Elf_Internal_Rela
*rel_t
;
8132 rel_t
>= internal_relocs
&& rel_t
->r_offset
== reloc
->r_offset
;
8134 if (ELF32_R_TYPE (rel_t
->r_info
) == reloc_type
)
8136 if (ELF32_R_SYM (rel_t
->r_info
) == ELF32_R_SYM (reloc
->r_info
)
8137 && rel_t
->r_addend
== reloc
->r_addend
)
8142 for (rel_t
= reloc
; rel_t
< irelend
&& rel_t
->r_offset
== reloc
->r_offset
;
8144 if (ELF32_R_TYPE (rel_t
->r_info
) == reloc_type
)
8146 if (ELF32_R_SYM (rel_t
->r_info
) == ELF32_R_SYM (reloc
->r_info
)
8147 && rel_t
->r_addend
== reloc
->r_addend
)
8155 typedef struct nds32_elf_blank nds32_elf_blank_t
;
8156 struct nds32_elf_blank
8158 /* Where the blank begins. */
8160 /* The size of the blank. */
8162 /* The accumulative size before this blank. */
8164 nds32_elf_blank_t
*next
;
8165 nds32_elf_blank_t
*prev
;
8168 static nds32_elf_blank_t
*blank_free_list
= NULL
;
8170 static nds32_elf_blank_t
*
8171 create_nds32_elf_blank (bfd_vma offset_p
, bfd_vma size_p
)
8173 nds32_elf_blank_t
*blank_t
;
8175 if (blank_free_list
)
8177 blank_t
= blank_free_list
;
8178 blank_free_list
= blank_free_list
->next
;
8181 blank_t
= bfd_malloc (sizeof (nds32_elf_blank_t
));
8183 if (blank_t
== NULL
)
8186 blank_t
->offset
= offset_p
;
8187 blank_t
->size
= size_p
;
8188 blank_t
->total_size
= 0;
8189 blank_t
->next
= NULL
;
8190 blank_t
->prev
= NULL
;
8196 remove_nds32_elf_blank (nds32_elf_blank_t
*blank_p
)
8198 if (blank_free_list
)
8200 blank_free_list
->prev
= blank_p
;
8201 blank_p
->next
= blank_free_list
;
8204 blank_p
->next
= NULL
;
8206 blank_p
->prev
= NULL
;
8207 blank_free_list
= blank_p
;
8211 clean_nds32_elf_blank (void)
8213 nds32_elf_blank_t
*blank_t
;
8215 while (blank_free_list
)
8217 blank_t
= blank_free_list
;
8218 blank_free_list
= blank_free_list
->next
;
8223 static nds32_elf_blank_t
*
8224 search_nds32_elf_blank (nds32_elf_blank_t
*blank_p
, bfd_vma addr
)
8226 nds32_elf_blank_t
*blank_t
;
8232 while (blank_t
&& addr
< blank_t
->offset
)
8233 blank_t
= blank_t
->prev
;
8234 while (blank_t
&& blank_t
->next
&& addr
>= blank_t
->next
->offset
)
8235 blank_t
= blank_t
->next
;
8241 get_nds32_elf_blank_total (nds32_elf_blank_t
**blank_p
, bfd_vma addr
,
8244 nds32_elf_blank_t
*blank_t
;
8246 blank_t
= search_nds32_elf_blank (*blank_p
, addr
);
8253 if (addr
< blank_t
->offset
+ blank_t
->size
)
8254 return blank_t
->total_size
+ (addr
- blank_t
->offset
);
8256 return blank_t
->total_size
+ blank_t
->size
;
8260 insert_nds32_elf_blank (nds32_elf_blank_t
**blank_p
, bfd_vma addr
, bfd_vma len
)
8262 nds32_elf_blank_t
*blank_t
, *blank_t2
;
8266 *blank_p
= create_nds32_elf_blank (addr
, len
);
8267 return *blank_p
? TRUE
: FALSE
;
8270 blank_t
= search_nds32_elf_blank (*blank_p
, addr
);
8272 if (blank_t
== NULL
)
8274 blank_t
= create_nds32_elf_blank (addr
, len
);
8277 while ((*blank_p
)->prev
!= NULL
)
8278 *blank_p
= (*blank_p
)->prev
;
8279 blank_t
->next
= *blank_p
;
8280 (*blank_p
)->prev
= blank_t
;
8281 (*blank_p
) = blank_t
;
8285 if (addr
< blank_t
->offset
+ blank_t
->size
)
8287 if (addr
> blank_t
->offset
+ blank_t
->size
)
8288 blank_t
->size
= addr
- blank_t
->offset
;
8292 blank_t2
= create_nds32_elf_blank (addr
, len
);
8297 blank_t
->next
->prev
= blank_t2
;
8298 blank_t2
->next
= blank_t
->next
;
8300 blank_t2
->prev
= blank_t
;
8301 blank_t
->next
= blank_t2
;
8302 *blank_p
= blank_t2
;
8309 insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t
**blank_p
, bfd_vma addr
,
8312 nds32_elf_blank_t
*blank_t
;
8314 if (!insert_nds32_elf_blank (blank_p
, addr
, len
))
8321 blank_t
->total_size
= 0;
8322 blank_t
= blank_t
->next
;
8327 blank_t
->total_size
= blank_t
->prev
->total_size
+ blank_t
->prev
->size
;
8328 blank_t
= blank_t
->next
;
8335 calc_nds32_blank_total (nds32_elf_blank_t
*blank_p
)
8337 nds32_elf_blank_t
*blank_t
;
8338 bfd_vma total_size
= 0;
8344 while (blank_t
->prev
)
8345 blank_t
= blank_t
->prev
;
8348 blank_t
->total_size
= total_size
;
8349 total_size
+= blank_t
->size
;
8350 blank_t
= blank_t
->next
;
8355 nds32_elf_relax_delete_blanks (bfd
*abfd
, asection
*sec
,
8356 nds32_elf_blank_t
*blank_p
)
8358 Elf_Internal_Shdr
*symtab_hdr
; /* Symbol table header of this bfd. */
8359 Elf_Internal_Sym
*isym
= NULL
; /* Symbol table of this bfd. */
8360 Elf_Internal_Sym
*isymend
; /* Symbol entry iterator. */
8361 unsigned int sec_shndx
; /* The section the be relaxed. */
8362 bfd_byte
*contents
; /* Contents data of iterating section. */
8363 Elf_Internal_Rela
*internal_relocs
;
8364 Elf_Internal_Rela
*irel
;
8365 Elf_Internal_Rela
*irelend
;
8366 struct elf_link_hash_entry
**sym_hashes
;
8367 struct elf_link_hash_entry
**end_hashes
;
8368 unsigned int symcount
;
8370 nds32_elf_blank_t
*blank_t
;
8371 nds32_elf_blank_t
*blank_t2
;
8372 nds32_elf_blank_t
*blank_head
;
8374 blank_head
= blank_t
= blank_p
;
8375 while (blank_head
->prev
!= NULL
)
8376 blank_head
= blank_head
->prev
;
8377 while (blank_t
->next
!= NULL
)
8378 blank_t
= blank_t
->next
;
8380 if (blank_t
->offset
+ blank_t
->size
<= sec
->size
)
8382 blank_t
->next
= create_nds32_elf_blank (sec
->size
+ 4, 0);
8383 blank_t
->next
->prev
= blank_t
;
8385 if (blank_head
->offset
> 0)
8387 blank_head
->prev
= create_nds32_elf_blank (0, 0);
8388 blank_head
->prev
->next
= blank_head
;
8389 blank_head
= blank_head
->prev
;
8392 sec_shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
8394 /* The deletion must stop at the next ALIGN reloc for an alignment
8395 power larger than the number of bytes we are deleting. */
8397 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
8398 if (!nds32_get_local_syms (abfd
, sec
, &isym
))
8403 isym
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
8404 symtab_hdr
->sh_info
, 0, NULL
, NULL
, NULL
);
8405 symtab_hdr
->contents
= (bfd_byte
*) isym
;
8408 if (isym
== NULL
|| symtab_hdr
->sh_info
== 0)
8411 blank_t
= blank_head
;
8412 calc_nds32_blank_total (blank_head
);
8414 for (sect
= abfd
->sections
; sect
!= NULL
; sect
= sect
->next
)
8416 /* Adjust all the relocs. */
8418 /* Relocations MUST be kept in memory, because relaxation adjust them. */
8419 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sect
, NULL
, NULL
,
8420 TRUE
/* keep_memory */);
8421 irelend
= internal_relocs
+ sect
->reloc_count
;
8423 blank_t
= blank_head
;
8424 blank_t2
= blank_head
;
8426 if (!(sect
->flags
& SEC_RELOC
))
8429 nds32_get_section_contents (abfd
, sect
, &contents
, TRUE
);
8431 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
8435 if (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_DIFF8
8436 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_DIFF32
8437 && isym
[ELF32_R_SYM (irel
->r_info
)].st_shndx
== sec_shndx
)
8439 unsigned long val
= 0;
8441 long before
, between
;
8444 switch (ELF32_R_TYPE (irel
->r_info
))
8447 offset
= bfd_get_8 (abfd
, contents
+ irel
->r_offset
);
8449 case R_NDS32_DIFF16
:
8450 offset
= bfd_get_16 (abfd
, contents
+ irel
->r_offset
);
8452 case R_NDS32_DIFF32
:
8453 val
= bfd_get_32 (abfd
, contents
+ irel
->r_offset
);
8454 /* Get the signed bit and mask for the high part. The
8455 gcc will alarm when right shift 32-bit since the
8456 type size of long may be 32-bit. */
8457 mask
= 0 - (val
>> 31);
8459 offset
= (val
| (mask
- 0xffffffff));
8468 0 |encoded in location|
8469 |------------|-------------------|---------
8471 -- before ---| *****************
8472 --------------------- between ---|
8474 We only care how much data are relax between DIFF,
8477 before
= get_nds32_elf_blank_total (&blank_t
, irel
->r_addend
, 0);
8478 between
= get_nds32_elf_blank_total (&blank_t
,
8479 irel
->r_addend
+ offset
, 0);
8480 if (between
== before
)
8481 goto done_adjust_diff
;
8483 switch (ELF32_R_TYPE (irel
->r_info
))
8486 bfd_put_8 (abfd
, offset
- (between
- before
),
8487 contents
+ irel
->r_offset
);
8489 case R_NDS32_DIFF16
:
8490 bfd_put_16 (abfd
, offset
- (between
- before
),
8491 contents
+ irel
->r_offset
);
8493 case R_NDS32_DIFF32
:
8494 bfd_put_32 (abfd
, offset
- (between
- before
),
8495 contents
+ irel
->r_offset
);
8499 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_DIFF_ULEB128
8500 && isym
[ELF32_R_SYM (irel
->r_info
)].st_shndx
== sec_shndx
)
8503 unsigned int len
= 0;
8504 unsigned long before
, between
;
8507 val
= _bfd_read_unsigned_leb128 (abfd
, contents
+ irel
->r_offset
,
8510 before
= get_nds32_elf_blank_total (&blank_t
, irel
->r_addend
, 0);
8511 between
= get_nds32_elf_blank_total (&blank_t
,
8512 irel
->r_addend
+ val
, 0);
8513 if (between
== before
)
8514 goto done_adjust_diff
;
8516 p
= contents
+ irel
->r_offset
;
8518 memset (p
, 0x80, len
);
8520 p
= write_uleb128 (p
, val
- (between
- before
)) - 1;
8528 raddr
= irel
->r_offset
;
8529 irel
->r_offset
-= get_nds32_elf_blank_total (&blank_t2
,
8532 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_NONE
)
8534 if (blank_t2
&& blank_t2
->next
8535 && (blank_t2
->offset
> raddr
8536 || blank_t2
->next
->offset
<= raddr
))
8538 (_("%pB: error: search_nds32_elf_blank reports wrong node"),
8541 /* Mark reloc in deleted portion as NONE.
8542 For some relocs like R_NDS32_LABEL that doesn't modify the
8543 content in the section. R_NDS32_LABEL doesn't belong to the
8544 instruction in the section, so we should preserve it. */
8545 if (raddr
>= blank_t2
->offset
8546 && raddr
< blank_t2
->offset
+ blank_t2
->size
8547 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_LABEL
8548 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_REGION_BEGIN
8549 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_REGION_END
8550 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_ENTRY
8551 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_SUBTRAHEND
8552 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_MINUEND
)
8554 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
8560 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_NONE
8561 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
8562 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_ENTRY
)
8565 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
8566 && isym
[ELF32_R_SYM (irel
->r_info
)].st_shndx
== sec_shndx
8567 && ELF_ST_TYPE (isym
[ELF32_R_SYM (irel
->r_info
)].st_info
) == STT_SECTION
)
8569 if (irel
->r_addend
<= sec
->size
)
8571 get_nds32_elf_blank_total (&blank_t
, irel
->r_addend
, 1);
8576 /* Adjust the local symbols defined in this section. */
8577 blank_t
= blank_head
;
8578 for (isymend
= isym
+ symtab_hdr
->sh_info
; isym
< isymend
; isym
++)
8580 if (isym
->st_shndx
== sec_shndx
)
8582 if (isym
->st_value
<= sec
->size
)
8585 bfd_vma orig_addr
= isym
->st_value
;
8587 ahead
= get_nds32_elf_blank_total (&blank_t
, isym
->st_value
, 1);
8588 isym
->st_value
-= ahead
;
8590 /* Adjust function size. */
8591 if (ELF32_ST_TYPE (isym
->st_info
) == STT_FUNC
8592 && isym
->st_size
> 0)
8594 get_nds32_elf_blank_total
8595 (&blank_t
, orig_addr
+ isym
->st_size
, 0) - ahead
;
8600 /* Now adjust the global symbols defined in this section. */
8601 symcount
= (symtab_hdr
->sh_size
/ sizeof (Elf32_External_Sym
)
8602 - symtab_hdr
->sh_info
);
8603 sym_hashes
= elf_sym_hashes (abfd
);
8604 end_hashes
= sym_hashes
+ symcount
;
8605 blank_t
= blank_head
;
8606 for (; sym_hashes
< end_hashes
; sym_hashes
++)
8608 struct elf_link_hash_entry
*sym_hash
= *sym_hashes
;
8610 if ((sym_hash
->root
.type
== bfd_link_hash_defined
8611 || sym_hash
->root
.type
== bfd_link_hash_defweak
)
8612 && sym_hash
->root
.u
.def
.section
== sec
)
8614 if (sym_hash
->root
.u
.def
.value
<= sec
->size
)
8617 bfd_vma orig_addr
= sym_hash
->root
.u
.def
.value
;
8619 ahead
= get_nds32_elf_blank_total (&blank_t
, sym_hash
->root
.u
.def
.value
, 1);
8620 sym_hash
->root
.u
.def
.value
-= ahead
;
8622 /* Adjust function size. */
8623 if (sym_hash
->type
== STT_FUNC
)
8625 get_nds32_elf_blank_total
8626 (&blank_t
, orig_addr
+ sym_hash
->size
, 0) - ahead
;
8632 contents
= elf_section_data (sec
)->this_hdr
.contents
;
8633 blank_t
= blank_head
;
8634 while (blank_t
->next
)
8636 /* Actually delete the bytes. */
8638 /* If current blank is the last blank overlap with current section,
8639 go to finish process. */
8640 if (sec
->size
<= (blank_t
->next
->offset
))
8643 memmove (contents
+ blank_t
->offset
- blank_t
->total_size
,
8644 contents
+ blank_t
->offset
+ blank_t
->size
,
8645 blank_t
->next
->offset
- (blank_t
->offset
+ blank_t
->size
));
8647 blank_t
= blank_t
->next
;
8650 if (sec
->size
> (blank_t
->offset
+ blank_t
->size
))
8652 /* There are remaining code between blank and section boundary.
8653 Move the remaining code to appropriate location. */
8654 memmove (contents
+ blank_t
->offset
- blank_t
->total_size
,
8655 contents
+ blank_t
->offset
+ blank_t
->size
,
8656 sec
->size
- (blank_t
->offset
+ blank_t
->size
));
8657 sec
->size
-= blank_t
->total_size
+ blank_t
->size
;
8660 /* This blank is not entirely included in the section,
8661 reduce the section size by only part of the blank size. */
8662 sec
->size
-= blank_t
->total_size
+ (sec
->size
- blank_t
->offset
);
8666 blank_t
= blank_head
;
8667 blank_head
= blank_head
->next
;
8668 remove_nds32_elf_blank (blank_t
);
8674 /* Get the contents of a section. */
8677 nds32_get_section_contents (bfd
*abfd
, asection
*sec
,
8678 bfd_byte
**contents_p
, bfd_boolean cache
)
8680 /* Get the section contents. */
8681 if (elf_section_data (sec
)->this_hdr
.contents
!= NULL
)
8682 *contents_p
= elf_section_data (sec
)->this_hdr
.contents
;
8685 if (!bfd_malloc_and_get_section (abfd
, sec
, contents_p
))
8688 elf_section_data (sec
)->this_hdr
.contents
= *contents_p
;
8694 /* Get the contents of the internal symbol of abfd. */
8697 nds32_get_local_syms (bfd
*abfd
, asection
*sec ATTRIBUTE_UNUSED
,
8698 Elf_Internal_Sym
**isymbuf_p
)
8700 Elf_Internal_Shdr
*symtab_hdr
;
8701 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
8703 /* Read this BFD's local symbols if we haven't done so already. */
8704 if (*isymbuf_p
== NULL
&& symtab_hdr
->sh_info
!= 0)
8706 *isymbuf_p
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
8707 if (*isymbuf_p
== NULL
)
8709 *isymbuf_p
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
8710 symtab_hdr
->sh_info
, 0,
8712 if (*isymbuf_p
== NULL
)
8716 symtab_hdr
->contents
= (bfd_byte
*) (*isymbuf_p
);
8721 /* Range of small data. */
8722 static bfd_vma sdata_range
[2][2];
8723 static bfd_vma
const sdata_init_range
[2] =
8724 { ACCURATE_12BIT_S1
, ACCURATE_19BIT
};
8727 nds32_elf_insn_size (bfd
*abfd ATTRIBUTE_UNUSED
,
8728 bfd_byte
*contents
, bfd_vma addr
)
8730 unsigned long insn
= bfd_getb32 (contents
+ addr
);
8732 if (insn
& 0x80000000)
8738 /* Set the gp relax range. We have to measure the safe range
8739 to do gp relaxation. */
8742 relax_range_measurement (bfd
*abfd
)
8744 asection
*sec_f
, *sec_b
;
8745 /* For upper bound. */
8746 bfd_vma maxpgsz
= get_elf_backend_data (abfd
)->maxpagesize
;
8748 static int decide_relax_range
= 0;
8750 int range_number
= sizeof (sdata_init_range
) / sizeof (sdata_init_range
[0]);
8752 if (decide_relax_range
)
8754 decide_relax_range
= 1;
8756 if (sda_rela_sec
== NULL
)
8758 /* Since there is no data sections, we assume the range is page size. */
8759 for (i
= 0; i
< range_number
; i
++)
8761 sdata_range
[i
][0] = sdata_init_range
[i
] - 0x1000;
8762 sdata_range
[i
][1] = sdata_init_range
[i
] - 0x1000;
8767 /* Get the biggest alignment power after the gp located section. */
8768 sec_f
= sda_rela_sec
->output_section
;
8769 sec_b
= sec_f
->next
;
8771 while (sec_b
!= NULL
)
8773 if ((unsigned)(1 << sec_b
->alignment_power
) > align
)
8774 align
= (1 << sec_b
->alignment_power
);
8775 sec_b
= sec_b
->next
;
8778 /* I guess we can not determine the section before
8779 gp located section, so we assume the align is max page size. */
8780 for (i
= 0; i
< range_number
; i
++)
8782 sdata_range
[i
][1] = sdata_init_range
[i
] - align
;
8783 BFD_ASSERT (sdata_range
[i
][1] <= sdata_init_range
[i
]);
8784 sdata_range
[i
][0] = sdata_init_range
[i
] - maxpgsz
;
8785 BFD_ASSERT (sdata_range
[i
][0] <= sdata_init_range
[i
]);
8789 /* These are macros used to check flags encoded in r_addend.
8790 They are only used by nds32_elf_relax_section (). */
8791 #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff)
8792 #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000)
8793 #define IS_OPTIMIZE(addend) ((addend) & 0x40000000)
8794 #define IS_16BIT_ON(addend) ((addend) & 0x20000000)
8796 static const char * unrecognized_reloc_msg
=
8797 /* xgettext:c-format */
8798 N_("%pB: warning: %s points to unrecognized reloc at %#" PRIx64
);
8800 /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */
8803 nds32_elf_relax_longcall1 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
8804 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
8805 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
8806 Elf_Internal_Shdr
*symtab_hdr
)
8808 /* There are 3 variations for LONGCALL1
8809 case 4-4-2; 16-bit on, optimize off or optimize for space
8810 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8811 ori ta, ta, lo12(symbol) ; LO12S0
8814 case 4-4-4; 16-bit off, optimize don't care
8815 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8816 ori ta, ta, lo12(symbol) ; LO12S0
8819 case 4-4-4; 16-bit on, optimize for speed
8820 sethi ta, hi20(symbol) ; LONGCALL1/HI20
8821 ori ta, ta, lo12(symbol) ; LO12S0
8823 Check code for -mlong-calls output. */
8825 /* Get the reloc for the address from which the register is
8826 being loaded. This reloc will tell us which function is
8827 actually being called. */
8830 int seq_len
; /* Original length of instruction sequence. */
8832 Elf_Internal_Rela
*hi_irelfn
, *lo_irelfn
, *irelend
;
8833 int pic_ext_target
= 0;
8834 bfd_signed_vma foff
;
8837 irelend
= internal_relocs
+ sec
->reloc_count
;
8838 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
8839 laddr
= irel
->r_offset
;
8840 *insn_len
= seq_len
;
8842 hi_irelfn
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
8843 R_NDS32_HI20_RELA
, laddr
);
8844 lo_irelfn
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
8845 R_NDS32_LO12S0_ORI_RELA
,
8848 if (hi_irelfn
== irelend
|| lo_irelfn
== irelend
)
8850 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL1",
8851 (uint64_t) irel
->r_offset
);
8855 /* Get the value of the symbol referred to by the reloc. */
8856 foff
= calculate_offset (abfd
, sec
, hi_irelfn
, isymbuf
, symtab_hdr
,
8859 /* This condition only happened when symbol is undefined. */
8860 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
8861 || foff
>= CONSERVATIVE_24BIT_S1
)
8864 /* Relax to: jal symbol; 25_PCREL */
8865 /* For simplicity of coding, we are going to modify the section
8866 contents, the section relocs, and the BFD symbol table. We
8867 must tell the rest of the code not to free up this
8868 information. It would be possible to instead create a table
8869 of changes which have to be made, as is done in coff-mips.c;
8870 that would be more work, but would require less memory when
8871 the linker is run. */
8873 /* Replace the long call with a jal. */
8874 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
8875 R_NDS32_25_PCREL_RELA
);
8876 irel
->r_addend
= hi_irelfn
->r_addend
;
8878 /* We don't resolve this here but resolve it in relocate_section. */
8880 bfd_putb32 (insn
, contents
+ irel
->r_offset
);
8883 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_NDS32_NONE
);
8885 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_NONE
);
8890 insn16
= NDS32_NOP16
;
8891 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ *insn_len
);
8893 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_INSN16
);
8894 lo_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
8900 #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000)
8901 /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */
8904 nds32_elf_relax_longcall2 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
8905 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
8906 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
8907 Elf_Internal_Shdr
*symtab_hdr
)
8909 /* bltz rt, .L1 ; LONGCALL2
8910 jal symbol ; 25_PCREL
8913 /* Get the reloc for the address from which the register is
8914 being loaded. This reloc will tell us which function is
8915 actually being called. */
8919 Elf_Internal_Rela
*i1_irelfn
, *cond_irelfn
, *irelend
;
8920 int pic_ext_target
= 0;
8921 bfd_signed_vma foff
;
8923 irelend
= internal_relocs
+ sec
->reloc_count
;
8924 laddr
= irel
->r_offset
;
8926 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
8927 R_NDS32_25_PCREL_RELA
, laddr
+ 4);
8929 if (i1_irelfn
== irelend
)
8931 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL2",
8932 (uint64_t) irel
->r_offset
);
8936 insn
= bfd_getb32 (contents
+ laddr
);
8938 /* Get the value of the symbol referred to by the reloc. */
8939 foff
= calculate_offset (abfd
, sec
, i1_irelfn
, isymbuf
, symtab_hdr
,
8942 if (foff
== 0 || foff
< -CONSERVATIVE_16BIT_S1
8943 || foff
>= CONSERVATIVE_16BIT_S1
)
8946 /* Relax to bgezal rt, label ; 17_PCREL
8947 or bltzal rt, label ; 17_PCREL */
8949 /* Convert to complimentary conditional call. */
8950 insn
= CONVERT_CONDITION_CALL (insn
);
8952 /* For simplicity of coding, we are going to modify the section
8953 contents, the section relocs, and the BFD symbol table. We
8954 must tell the rest of the code not to free up this
8955 information. It would be possible to instead create a table
8956 of changes which have to be made, as is done in coff-mips.c;
8957 that would be more work, but would require less memory when
8958 the linker is run. */
8960 /* Clean unnessary relocations. */
8962 ELF32_R_INFO (ELF32_R_SYM (i1_irelfn
->r_info
), R_NDS32_NONE
);
8964 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
8965 R_NDS32_17_PCREL_RELA
, laddr
);
8966 if (cond_irelfn
!= irelend
)
8967 cond_irelfn
->r_info
=
8968 ELF32_R_INFO (ELF32_R_SYM (cond_irelfn
->r_info
), R_NDS32_NONE
);
8970 /* Replace the long call with a bgezal. */
8971 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (i1_irelfn
->r_info
),
8972 R_NDS32_17_PCREL_RELA
);
8973 irel
->r_addend
= i1_irelfn
->r_addend
;
8975 bfd_putb32 (insn
, contents
+ irel
->r_offset
);
8981 /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */
8984 nds32_elf_relax_longcall3 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
8985 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
8986 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
8987 Elf_Internal_Shdr
*symtab_hdr
)
8989 /* There are 3 variations for LONGCALL3
8990 case 4-4-4-2; 16-bit on, optimize off or optimize for space
8991 bltz rt, $1 ; LONGCALL3
8992 sethi ta, hi20(symbol) ; HI20
8993 ori ta, ta, lo12(symbol) ; LO12S0
8997 case 4-4-4-4; 16-bit off, optimize don't care
8998 bltz rt, $1 ; LONGCALL3
8999 sethi ta, hi20(symbol) ; HI20
9000 ori ta, ta, lo12(symbol) ; LO12S0
9004 case 4-4-4-4; 16-bit on, optimize for speed
9005 bltz rt, $1 ; LONGCALL3
9006 sethi ta, hi20(symbol) ; HI20
9007 ori ta, ta, lo12(symbol) ; LO12S0
9011 /* Get the reloc for the address from which the register is
9012 being loaded. This reloc will tell us which function is
9013 actually being called. */
9016 int seq_len
; /* Original length of instruction sequence. */
9018 Elf_Internal_Rela
*hi_irelfn
, *lo_irelfn
, *cond_irelfn
, *irelend
;
9019 int pic_ext_target
= 0;
9020 bfd_signed_vma foff
;
9023 irelend
= internal_relocs
+ sec
->reloc_count
;
9024 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
9025 laddr
= irel
->r_offset
;
9026 *insn_len
= seq_len
;
9029 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9030 R_NDS32_HI20_RELA
, laddr
+ 4);
9032 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9033 R_NDS32_LO12S0_ORI_RELA
, laddr
+ 8);
9035 if (hi_irelfn
== irelend
|| lo_irelfn
== irelend
)
9037 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL3",
9038 (uint64_t) irel
->r_offset
);
9042 /* Get the value of the symbol referred to by the reloc. */
9043 foff
= calculate_offset (abfd
, sec
, hi_irelfn
, isymbuf
, symtab_hdr
,
9046 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
9047 || foff
>= CONSERVATIVE_24BIT_S1
)
9050 insn
= bfd_getb32 (contents
+ laddr
);
9051 if (foff
>= -CONSERVATIVE_16BIT_S1
&& foff
< CONSERVATIVE_16BIT_S1
)
9053 /* Relax to bgezal rt, label ; 17_PCREL
9054 or bltzal rt, label ; 17_PCREL */
9056 /* Convert to complimentary conditional call. */
9057 insn
= CONVERT_CONDITION_CALL (insn
);
9058 bfd_putb32 (insn
, contents
+ irel
->r_offset
);
9062 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_NDS32_NONE
);
9064 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_NDS32_NONE
);
9066 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_NONE
);
9069 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9070 R_NDS32_17_PCREL_RELA
, laddr
);
9071 if (cond_irelfn
!= irelend
)
9073 cond_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
9074 R_NDS32_17_PCREL_RELA
);
9075 cond_irelfn
->r_addend
= hi_irelfn
->r_addend
;
9080 insn16
= NDS32_NOP16
;
9081 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ *insn_len
);
9082 hi_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
9084 hi_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
9088 else if (foff
>= -CONSERVATIVE_24BIT_S1
&& foff
< CONSERVATIVE_24BIT_S1
)
9090 /* Relax to the following instruction sequence
9091 bltz rt, $1 ; LONGCALL2
9092 jal symbol ; 25_PCREL
9096 bfd_putb32 (insn
, contents
+ hi_irelfn
->r_offset
);
9098 hi_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
9099 R_NDS32_25_PCREL_RELA
);
9101 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_LONGCALL2
);
9104 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_NONE
);
9108 insn16
= NDS32_NOP16
;
9109 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ *insn_len
);
9111 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_INSN16
);
9112 lo_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
9119 /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */
9122 nds32_elf_relax_longjump1 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9123 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9124 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9125 Elf_Internal_Shdr
*symtab_hdr
)
9127 /* There are 3 variations for LONGJUMP1
9128 case 4-4-2; 16-bit bit on, optimize off or optimize for space
9129 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9130 ori ta, ta, lo12(symbol) ; LO12S0
9133 case 4-4-4; 16-bit off, optimize don't care
9134 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9135 ori ta, ta, lo12(symbol) ; LO12S0
9138 case 4-4-4; 16-bit on, optimize for speed
9139 sethi ta, hi20(symbol) ; LONGJUMP1/HI20
9140 ori ta, ta, lo12(symbol) ; LO12S0
9143 /* Get the reloc for the address from which the register is
9144 being loaded. This reloc will tell us which function is
9145 actually being called. */
9148 int seq_len
; /* Original length of instruction sequence. */
9149 int insn16_on
; /* 16-bit on/off. */
9151 Elf_Internal_Rela
*hi_irelfn
, *lo_irelfn
, *irelend
;
9152 int pic_ext_target
= 0;
9153 bfd_signed_vma foff
;
9155 unsigned long reloc
;
9157 irelend
= internal_relocs
+ sec
->reloc_count
;
9158 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
9159 laddr
= irel
->r_offset
;
9160 *insn_len
= seq_len
;
9161 insn16_on
= IS_16BIT_ON (irel
->r_addend
);
9164 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9165 R_NDS32_HI20_RELA
, laddr
);
9167 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9168 R_NDS32_LO12S0_ORI_RELA
, laddr
+ 4);
9169 if (hi_irelfn
== irelend
|| lo_irelfn
== irelend
)
9171 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP1",
9172 (uint64_t) irel
->r_offset
);
9176 /* Get the value of the symbol referred to by the reloc. */
9177 foff
= calculate_offset (abfd
, sec
, hi_irelfn
, isymbuf
, symtab_hdr
,
9180 if (pic_ext_target
|| foff
== 0 || foff
>= CONSERVATIVE_24BIT_S1
9181 || foff
< -CONSERVATIVE_24BIT_S1
)
9184 if (insn16_on
&& foff
>= -ACCURATE_8BIT_S1
9185 && foff
< ACCURATE_8BIT_S1
&& (seq_len
& 0x2))
9188 /* 16-bit on, but not optimized for speed. */
9189 reloc
= R_NDS32_9_PCREL_RELA
;
9191 bfd_putb16 (insn16
, contents
+ irel
->r_offset
);
9194 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
9199 reloc
= R_NDS32_25_PCREL_RELA
;
9201 bfd_putb32 (insn
, contents
+ irel
->r_offset
);
9204 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_INSN16
);
9209 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), reloc
);
9211 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
), R_NDS32_NONE
);
9213 if ((seq_len
& 0x2) && ((*insn_len
& 2) == 0))
9215 insn16
= NDS32_NOP16
;
9216 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ *insn_len
);
9218 ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
),
9220 lo_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
9226 /* Revert condition branch. This function does not check if the input
9227 instruction is condition branch or not. */
9230 nds32_elf_convert_branch (uint16_t insn16
, uint32_t insn
,
9231 uint16_t *re_insn16
, uint32_t *re_insn
)
9233 uint32_t comp_insn
= 0;
9234 uint16_t comp_insn16
= 0;
9238 if (N32_OP6 (insn
) == N32_OP6_BR1
)
9241 comp_insn
= (insn
^ 0x4000) & 0xffffc000;
9242 if (N32_IS_RT3 (insn
) && N32_RA5 (insn
) == REG_R5
)
9244 /* Insn can be contracted to 16-bit implied r5. */
9246 (comp_insn
& 0x4000) ? INSN_BNES38
: INSN_BEQS38
;
9247 comp_insn16
|= (N32_RT5 (insn
) & 0x7) << 8;
9250 else if (N32_OP6 (insn
) == N32_OP6_BR3
)
9252 /* bnec $ta, imm11, label. */
9253 comp_insn
= (insn
^ 0x80000) & 0xffffff00;
9257 comp_insn
= (insn
^ 0x10000) & 0xffffc000;
9258 if (N32_BR2_SUB (insn
) == N32_BR2_BEQZ
9259 || N32_BR2_SUB (insn
) == N32_BR2_BNEZ
)
9261 if (N32_IS_RT3 (insn
))
9263 /* Insn can be contracted to 16-bit. */
9265 (comp_insn
& 0x10000) ? INSN_BNEZ38
: INSN_BEQZ38
;
9266 comp_insn16
|= (N32_RT5 (insn
) & 0x7) << 8;
9268 else if (N32_RT5 (insn
) == REG_R15
)
9270 /* Insn can be contracted to 16-bit. */
9272 (comp_insn
& 0x10000) ? INSN_BNES38
: INSN_BEQS38
;
9279 switch ((insn16
& 0xf000) >> 12)
9282 /* beqz38 or bnez38 */
9283 comp_insn16
= (insn16
^ 0x0800) & 0xff00;
9284 comp_insn
= (comp_insn16
& 0x0800) ? INSN_BNEZ
: INSN_BEQZ
;
9285 comp_insn
|= ((comp_insn16
& 0x0700) >> 8) << 20;
9289 /* beqs38 or bnes38 */
9290 comp_insn16
= (insn16
^ 0x0800) & 0xff00;
9291 comp_insn
= (comp_insn16
& 0x0800) ? INSN_BNE
: INSN_BEQ
;
9292 comp_insn
|= (((comp_insn16
& 0x0700) >> 8) << 20)
9297 /* beqzS8 or bnezS8 */
9298 comp_insn16
= (insn16
^ 0x0100) & 0xff00;
9299 comp_insn
= (comp_insn16
& 0x0100) ? INSN_BNEZ
: INSN_BEQZ
;
9300 comp_insn
|= REG_R15
<< 20;
9307 if (comp_insn
&& re_insn
)
9308 *re_insn
= comp_insn
;
9309 if (comp_insn16
&& re_insn16
)
9310 *re_insn16
= comp_insn16
;
9313 /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */
9316 nds32_elf_relax_longjump2 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9317 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9318 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9319 Elf_Internal_Shdr
*symtab_hdr
)
9321 /* There are 3 variations for LONGJUMP2
9322 case 2-4; 1st insn convertible, 16-bit on,
9323 optimize off or optimize for space
9324 bnes38 rt, ra, $1 ; LONGJUMP2
9328 case 4-4; 1st insn not convertible
9329 bne rt, ra, $1 ; LONGJUMP2
9333 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9334 bne rt, ra, $1 ; LONGJUMP2
9338 /* Get the reloc for the address from which the register is
9339 being loaded. This reloc will tell us which function is
9340 actually being called. */
9343 int seq_len
; /* Original length of instruction sequence. */
9344 Elf_Internal_Rela
*i2_irelfn
, *cond_irelfn
, *irelend
;
9345 int pic_ext_target
= 0, first_size
;
9347 bfd_signed_vma foff
;
9348 uint32_t insn
, re_insn
= 0;
9349 uint16_t insn16
, re_insn16
= 0;
9350 unsigned long reloc
, cond_reloc
;
9352 enum elf_nds32_reloc_type checked_types
[] =
9353 { R_NDS32_15_PCREL_RELA
, R_NDS32_9_PCREL_RELA
};
9355 irelend
= internal_relocs
+ sec
->reloc_count
;
9356 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
9357 laddr
= irel
->r_offset
;
9358 *insn_len
= seq_len
;
9359 first_size
= (seq_len
== 6) ? 2 : 4;
9362 find_relocs_at_address_addr (irel
, internal_relocs
,
9363 irelend
, R_NDS32_25_PCREL_RELA
,
9364 laddr
+ first_size
);
9366 for (i
= 0; i
< sizeof (checked_types
) / sizeof(checked_types
[0]); i
++)
9369 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9370 checked_types
[i
], laddr
);
9371 if (cond_irelfn
!= irelend
)
9375 if (i2_irelfn
== irelend
|| cond_irelfn
== irelend
)
9377 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP2",
9378 (uint64_t) irel
->r_offset
);
9382 /* Get the value of the symbol referred to by the reloc. */
9384 calculate_offset (abfd
, sec
, i2_irelfn
, isymbuf
, symtab_hdr
,
9386 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_16BIT_S1
9387 || foff
>= CONSERVATIVE_16BIT_S1
)
9390 /* Get the all corresponding instructions. */
9391 if (first_size
== 4)
9393 insn
= bfd_getb32 (contents
+ laddr
);
9394 nds32_elf_convert_branch (0, insn
, &re_insn16
, &re_insn
);
9398 insn16
= bfd_getb16 (contents
+ laddr
);
9399 nds32_elf_convert_branch (insn16
, 0, &re_insn16
, &re_insn
);
9402 if (re_insn16
&& foff
>= -(ACCURATE_8BIT_S1
- first_size
)
9403 && foff
< ACCURATE_8BIT_S1
- first_size
)
9405 if (first_size
== 4)
9407 /* Don't convert it to 16-bit now, keep this as relaxable for
9408 ``label reloc; INSN16''. */
9410 /* Save comp_insn32 to buffer. */
9411 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9413 reloc
= (N32_OP6 (re_insn
) == N32_OP6_BR1
) ?
9414 R_NDS32_15_PCREL_RELA
: R_NDS32_17_PCREL_RELA
;
9415 cond_reloc
= R_NDS32_INSN16
;
9419 bfd_putb16 (re_insn16
, contents
+ irel
->r_offset
);
9421 reloc
= R_NDS32_9_PCREL_RELA
;
9422 cond_reloc
= R_NDS32_NONE
;
9425 else if (N32_OP6 (re_insn
) == N32_OP6_BR1
9426 && (foff
>= -(ACCURATE_14BIT_S1
- first_size
)
9427 && foff
< ACCURATE_14BIT_S1
- first_size
))
9429 /* beqs label ; 15_PCREL */
9430 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9432 reloc
= R_NDS32_15_PCREL_RELA
;
9433 cond_reloc
= R_NDS32_NONE
;
9435 else if (N32_OP6 (re_insn
) == N32_OP6_BR2
9436 && foff
>= -CONSERVATIVE_16BIT_S1
9437 && foff
< CONSERVATIVE_16BIT_S1
)
9439 /* beqz label ; 17_PCREL */
9440 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9442 reloc
= R_NDS32_17_PCREL_RELA
;
9443 cond_reloc
= R_NDS32_NONE
;
9448 /* Set all relocations. */
9449 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (i2_irelfn
->r_info
), reloc
);
9450 irel
->r_addend
= i2_irelfn
->r_addend
;
9452 cond_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irelfn
->r_info
),
9454 cond_irelfn
->r_addend
= 0;
9456 if ((seq_len
^ *insn_len
) & 0x2)
9458 insn16
= NDS32_NOP16
;
9459 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ 4);
9460 i2_irelfn
->r_offset
= 4;
9461 i2_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (i2_irelfn
->r_info
),
9463 i2_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
9467 i2_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (i2_irelfn
->r_info
),
9472 /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */
9475 nds32_elf_relax_longjump3 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9476 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9477 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9478 Elf_Internal_Shdr
*symtab_hdr
)
9480 /* There are 5 variations for LONGJUMP3
9481 case 1: 2-4-4-2; 1st insn convertible, 16-bit on,
9482 optimize off or optimize for space
9483 bnes38 rt, ra, $1 ; LONGJUMP3
9484 sethi ta, hi20(symbol) ; HI20
9485 ori ta, ta, lo12(symbol) ; LO12S0
9489 case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed
9490 bnes38 rt, ra, $1 ; LONGJUMP3
9491 sethi ta, hi20(symbol) ; HI20
9492 ori ta, ta, lo12(symbol) ; LO12S0
9496 case 3: 4-4-4-2; 1st insn not convertible, 16-bit on,
9497 optimize off or optimize for space
9498 bne rt, ra, $1 ; LONGJUMP3
9499 sethi ta, hi20(symbol) ; HI20
9500 ori ta, ta, lo12(symbol) ; LO12S0
9504 case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care
9505 16-bit off if no INSN16
9506 bne rt, ra, $1 ; LONGJUMP3
9507 sethi ta, hi20(symbol) ; HI20
9508 ori ta, ta, lo12(symbol) ; LO12S0
9512 case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed
9513 16-bit off if no INSN16
9514 bne rt, ra, $1 ; LONGJUMP3
9515 sethi ta, hi20(symbol) ; HI20
9516 ori ta, ta, lo12(symbol) ; LO12S0
9520 /* Get the reloc for the address from which the register is
9521 being loaded. This reloc will tell us which function is
9522 actually being called. */
9523 enum elf_nds32_reloc_type checked_types
[] =
9524 { R_NDS32_15_PCREL_RELA
, R_NDS32_9_PCREL_RELA
};
9526 int reloc_off
= 0, cond_removed
= 0, convertible
;
9528 int seq_len
; /* Original length of instruction sequence. */
9529 Elf_Internal_Rela
*hi_irelfn
, *lo_irelfn
, *cond_irelfn
, *irelend
;
9530 int pic_ext_target
= 0, first_size
;
9532 bfd_signed_vma foff
;
9533 uint32_t insn
, re_insn
= 0;
9534 uint16_t insn16
, re_insn16
= 0;
9535 unsigned long reloc
, cond_reloc
;
9537 irelend
= internal_relocs
+ sec
->reloc_count
;
9538 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
9539 laddr
= irel
->r_offset
;
9540 *insn_len
= seq_len
;
9542 convertible
= IS_1ST_CONVERT (irel
->r_addend
);
9549 /* Get all needed relocations. */
9551 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9552 R_NDS32_HI20_RELA
, laddr
+ first_size
);
9554 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9555 R_NDS32_LO12S0_ORI_RELA
,
9556 laddr
+ first_size
+ 4);
9558 for (i
= 0; i
< sizeof (checked_types
) / sizeof (checked_types
[0]); i
++)
9561 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9562 checked_types
[i
], laddr
);
9563 if (cond_irelfn
!= irelend
)
9567 if (hi_irelfn
== irelend
|| lo_irelfn
== irelend
|| cond_irelfn
== irelend
)
9569 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP3",
9570 (uint64_t) irel
->r_offset
);
9574 /* Get the value of the symbol referred to by the reloc. */
9575 foff
= calculate_offset (abfd
, sec
, hi_irelfn
, isymbuf
, symtab_hdr
,
9578 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
9579 || foff
>= CONSERVATIVE_24BIT_S1
)
9582 /* Get the all corresponding instructions. */
9583 if (first_size
== 4)
9585 insn
= bfd_getb32 (contents
+ laddr
);
9586 nds32_elf_convert_branch (0, insn
, &re_insn16
, &re_insn
);
9590 insn16
= bfd_getb16 (contents
+ laddr
);
9591 nds32_elf_convert_branch (insn16
, 0, &re_insn16
, &re_insn
);
9594 /* For simplicity of coding, we are going to modify the section
9595 contents, the section relocs, and the BFD symbol table. We
9596 must tell the rest of the code not to free up this
9597 information. It would be possible to instead create a table
9598 of changes which have to be made, as is done in coff-mips.c;
9599 that would be more work, but would require less memory when
9600 the linker is run. */
9602 if (re_insn16
&& foff
>= -ACCURATE_8BIT_S1
- first_size
9603 && foff
< ACCURATE_8BIT_S1
- first_size
)
9605 if (!(seq_len
& 0x2))
9607 /* Don't convert it to 16-bit now, keep this as relaxable
9608 for ``label reloc; INSN1a''6. */
9609 /* Save comp_insn32 to buffer. */
9610 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9612 reloc
= (N32_OP6 (re_insn
) == N32_OP6_BR1
) ?
9613 R_NDS32_15_PCREL_RELA
: R_NDS32_17_PCREL_RELA
;
9614 cond_reloc
= R_NDS32_INSN16
;
9618 /* Not optimize for speed; convert sequence to 16-bit. */
9619 /* Save comp_insn16 to buffer. */
9620 bfd_putb16 (re_insn16
, contents
+ irel
->r_offset
);
9622 reloc
= R_NDS32_9_PCREL_RELA
;
9623 cond_reloc
= R_NDS32_NONE
;
9627 else if (N32_OP6 (re_insn
) == N32_OP6_BR1
9628 && (foff
>= -(ACCURATE_14BIT_S1
- first_size
)
9629 && foff
< ACCURATE_14BIT_S1
- first_size
))
9631 /* beqs label ; 15_PCREL */
9632 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9634 reloc
= R_NDS32_15_PCREL_RELA
;
9635 cond_reloc
= R_NDS32_NONE
;
9638 else if (N32_OP6 (re_insn
) == N32_OP6_BR2
9639 && foff
>= -CONSERVATIVE_16BIT_S1
9640 && foff
< CONSERVATIVE_16BIT_S1
)
9642 /* beqz label ; 17_PCREL */
9643 bfd_putb32 (re_insn
, contents
+ irel
->r_offset
);
9645 reloc
= R_NDS32_17_PCREL_RELA
;
9646 cond_reloc
= R_NDS32_NONE
;
9649 else if (foff
>= -CONSERVATIVE_24BIT_S1
- reloc_off
9650 && foff
< CONSERVATIVE_24BIT_S1
- reloc_off
)
9652 /* Relax to one of the following 3 variations
9654 case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize
9656 bnes38 rt, $1 ; LONGJUMP2
9660 case 4-4; 1st insn not convertible, others don't care
9661 bne rt, ra, $1 ; LONGJUMP2
9665 case 4-4; 1st insn convertible, 16-bit on, optimize for speed
9666 bne rt, ra, $1 ; LONGJUMP2
9670 /* Offset for first instruction. */
9672 /* Use j label as second instruction. */
9673 *insn_len
= 4 + first_size
;
9675 bfd_putb32 (insn
, contents
+ hi_irelfn
->r_offset
);
9676 reloc
= R_NDS32_LONGJUMP2
;
9677 cond_reloc
= R_NDS32_25_PLTREL
;
9682 if (cond_removed
== 1)
9684 /* Set all relocations. */
9685 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), reloc
);
9686 irel
->r_addend
= hi_irelfn
->r_addend
;
9688 cond_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irelfn
->r_info
),
9690 cond_irelfn
->r_addend
= 0;
9691 hi_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
9696 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), reloc
);
9697 hi_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
),
9701 if ((seq_len
^ *insn_len
) & 0x2)
9703 insn16
= NDS32_NOP16
;
9704 bfd_putb16 (insn16
, contents
+ irel
->r_offset
+ *insn_len
);
9705 lo_irelfn
->r_offset
= *insn_len
;
9706 lo_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
),
9708 lo_irelfn
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
9712 lo_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (lo_irelfn
->r_info
),
9717 /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */
9720 nds32_elf_relax_longcall4 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9721 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9722 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9723 Elf_Internal_Shdr
*symtab_hdr
)
9725 /* The pattern for LONGCALL4. Support for function cse.
9726 sethi ta, hi20(symbol) ; LONGCALL4/HI20
9727 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9728 jral ta ; PTR_RES/EMPTY/INSN16 */
9732 Elf_Internal_Rela
*hi_irel
, *ptr_irel
, *insn_irel
, *em_irel
, *call_irel
;
9733 Elf_Internal_Rela
*irelend
;
9734 int pic_ext_target
= 0;
9735 bfd_signed_vma foff
;
9737 irelend
= internal_relocs
+ sec
->reloc_count
;
9738 laddr
= irel
->r_offset
;
9740 /* Get the reloc for the address from which the register is
9741 being loaded. This reloc will tell us which function is
9742 actually being called. */
9743 hi_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9744 R_NDS32_HI20_RELA
, laddr
);
9746 if (hi_irel
== irelend
)
9748 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL4",
9749 (uint64_t) irel
->r_offset
);
9753 /* Get the value of the symbol referred to by the reloc. */
9754 foff
= calculate_offset (abfd
, sec
, hi_irel
, isymbuf
, symtab_hdr
,
9757 /* This condition only happened when symbol is undefined. */
9758 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
9759 || foff
>= CONSERVATIVE_24BIT_S1
)
9762 /* Relax to: jal symbol; 25_PCREL */
9763 /* For simplicity of coding, we are going to modify the section
9764 contents, the section relocs, and the BFD symbol table. We
9765 must tell the rest of the code not to free up this
9766 information. It would be possible to instead create a table
9767 of changes which have to be made, as is done in coff-mips.c;
9768 that would be more work, but would require less memory when
9769 the linker is run. */
9771 ptr_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9772 R_NDS32_PTR_RESOLVED
, irel
->r_addend
);
9773 em_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9774 R_NDS32_EMPTY
, irel
->r_addend
);
9776 if (ptr_irel
== irelend
|| em_irel
== irelend
)
9778 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL4",
9779 (uint64_t) irel
->r_offset
);
9782 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
9783 insn
= bfd_getb32 (contents
+ irel
->r_addend
);
9784 if (insn
& 0x80000000)
9787 /* Replace the long call with a jal. */
9788 em_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (em_irel
->r_info
),
9789 R_NDS32_25_PCREL_RELA
);
9790 ptr_irel
->r_addend
= 1;
9792 /* We don't resolve this here but resolve it in relocate_section. */
9794 bfd_putb32 (insn
, contents
+ em_irel
->r_offset
);
9797 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
9799 /* If there is function cse, HI20 can not remove now. */
9800 call_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9801 R_NDS32_LONGCALL4
, laddr
);
9802 if (call_irel
== irelend
)
9806 ELF32_R_INFO (ELF32_R_SYM (hi_irel
->r_info
), R_NDS32_NONE
);
9809 insn_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9810 R_NDS32_INSN16
, irel
->r_addend
);
9811 if (insn_irel
!= irelend
)
9813 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
9818 /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */
9821 nds32_elf_relax_longcall5 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9822 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9823 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9824 Elf_Internal_Shdr
*symtab_hdr
)
9826 /* The pattern for LONGCALL5.
9827 bltz rt, .L1 ; LONGCALL5/17_PCREL
9828 jal symbol ; 25_PCREL
9833 Elf_Internal_Rela
*cond_irel
, *irelend
;
9834 int pic_ext_target
= 0;
9835 bfd_signed_vma foff
;
9837 irelend
= internal_relocs
+ sec
->reloc_count
;
9838 laddr
= irel
->r_offset
;
9839 insn
= bfd_getb32 (contents
+ laddr
);
9841 /* Get the reloc for the address from which the register is
9842 being loaded. This reloc will tell us which function is
9843 actually being called. */
9845 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9846 R_NDS32_25_PCREL_RELA
, irel
->r_addend
);
9847 if (cond_irel
== irelend
)
9849 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL5",
9850 (uint64_t) irel
->r_offset
);
9854 /* Get the value of the symbol referred to by the reloc. */
9855 foff
= calculate_offset (abfd
, sec
, cond_irel
, isymbuf
, symtab_hdr
,
9858 if (foff
== 0 || foff
< -CONSERVATIVE_16BIT_S1
9859 || foff
>= CONSERVATIVE_16BIT_S1
)
9862 /* Relax to bgezal rt, label ; 17_PCREL
9863 or bltzal rt, label ; 17_PCREL */
9865 /* Convert to complimentary conditional call. */
9866 insn
= CONVERT_CONDITION_CALL (insn
);
9868 /* For simplicity of coding, we are going to modify the section
9869 contents, the section relocs, and the BFD symbol table. We
9870 must tell the rest of the code not to free up this
9871 information. It would be possible to instead create a table
9872 of changes which have to be made, as is done in coff-mips.c;
9873 that would be more work, but would require less memory when
9874 the linker is run. */
9876 /* Modify relocation and contents. */
9878 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_17_PCREL_RELA
);
9880 /* Replace the long call with a bgezal. */
9881 bfd_putb32 (insn
, contents
+ cond_irel
->r_offset
);
9884 /* Clean unnessary relocations. */
9885 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
9887 cond_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9888 R_NDS32_17_PCREL_RELA
, laddr
);
9890 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_NONE
);
9895 /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */
9898 nds32_elf_relax_longcall6 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
9899 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
9900 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
9901 Elf_Internal_Shdr
*symtab_hdr
)
9903 /* The pattern for LONGCALL6.
9904 bltz rt, .L1 ; LONGCALL6/17_PCREL
9905 sethi ta, hi20(symbol) ; HI20/PTR
9906 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
9907 jral ta ; PTR_RES/EMPTY/INSN16
9912 Elf_Internal_Rela
*em_irel
, *cond_irel
, *irelend
;
9913 int pic_ext_target
= 0;
9914 bfd_signed_vma foff
;
9916 irelend
= internal_relocs
+ sec
->reloc_count
;
9917 laddr
= irel
->r_offset
;
9919 /* Get the reloc for the address from which the register is
9920 being loaded. This reloc will tell us which function is
9921 actually being called. */
9922 em_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9923 R_NDS32_EMPTY
, irel
->r_addend
);
9925 if (em_irel
== irelend
)
9927 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGCALL6",
9928 (uint64_t) irel
->r_offset
);
9932 /* Get the value of the symbol referred to by the reloc. */
9933 foff
= calculate_offset (abfd
, sec
, em_irel
, isymbuf
, symtab_hdr
,
9936 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
9937 || foff
>= CONSERVATIVE_24BIT_S1
)
9940 /* Check these is enough space to insert jal in R_NDS32_EMPTY. */
9941 insn
= bfd_getb32 (contents
+ irel
->r_addend
);
9942 if (insn
& 0x80000000)
9945 insn
= bfd_getb32 (contents
+ laddr
);
9946 if (foff
>= -CONSERVATIVE_16BIT_S1
&& foff
< CONSERVATIVE_16BIT_S1
)
9948 /* Relax to bgezal rt, label ; 17_PCREL
9949 or bltzal rt, label ; 17_PCREL */
9951 /* Convert to complimentary conditional call. */
9953 insn
= CONVERT_CONDITION_CALL (insn
);
9954 bfd_putb32 (insn
, contents
+ em_irel
->r_offset
);
9957 ELF32_R_INFO (ELF32_R_SYM (em_irel
->r_info
), R_NDS32_17_PCREL_RELA
);
9959 /* Set resolved relocation. */
9961 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9962 R_NDS32_PTR_RESOLVED
, irel
->r_addend
);
9963 if (cond_irel
== irelend
)
9965 _bfd_error_handler (unrecognized_reloc_msg
, abfd
,
9966 "R_NDS32_LONGCALL6", (uint64_t) irel
->r_offset
);
9969 cond_irel
->r_addend
= 1;
9971 /* Clear relocations. */
9974 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
9977 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9978 R_NDS32_17_PCREL_RELA
, laddr
);
9979 if (cond_irel
!= irelend
)
9981 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_NONE
);
9984 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
9985 R_NDS32_INSN16
, irel
->r_addend
);
9986 if (cond_irel
!= irelend
)
9988 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_NONE
);
9991 else if (foff
>= -CONSERVATIVE_24BIT_S1
&& foff
< CONSERVATIVE_24BIT_S1
)
9993 /* Relax to the following instruction sequence
9994 bltz rt, .L1 ; LONGCALL2/17_PCREL
9995 jal symbol ; 25_PCREL/PTR_RES
9998 /* Convert instruction. */
10000 bfd_putb32 (insn
, contents
+ em_irel
->r_offset
);
10002 /* Convert relocations. */
10003 em_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (em_irel
->r_info
),
10004 R_NDS32_25_PCREL_RELA
);
10006 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_LONGCALL5
);
10008 /* Set resolved relocation. */
10010 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10011 R_NDS32_PTR_RESOLVED
, irel
->r_addend
);
10012 if (cond_irel
== irelend
)
10014 _bfd_error_handler (unrecognized_reloc_msg
, abfd
,
10015 "R_NDS32_LONGCALL6", (uint64_t) irel
->r_offset
);
10018 cond_irel
->r_addend
= 1;
10021 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10022 R_NDS32_INSN16
, irel
->r_addend
);
10023 if (cond_irel
!= irelend
)
10024 cond_irel
->r_info
=
10025 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_NONE
);
10030 /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */
10033 nds32_elf_relax_longjump4 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
10034 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
10035 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10036 Elf_Internal_Shdr
*symtab_hdr
)
10038 /* The pattern for LONGJUMP4.
10039 sethi ta, hi20(symbol) ; LONGJUMP4/HI20
10040 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10041 jr ta ; PTR_RES/INSN16/EMPTY */
10044 int seq_len
; /* Original length of instruction sequence. */
10046 Elf_Internal_Rela
*hi_irel
, *ptr_irel
, *em_irel
, *call_irel
, *irelend
;
10047 int pic_ext_target
= 0;
10048 bfd_signed_vma foff
;
10050 irelend
= internal_relocs
+ sec
->reloc_count
;
10051 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
10052 laddr
= irel
->r_offset
;
10053 *insn_len
= seq_len
;
10055 /* Get the reloc for the address from which the register is
10056 being loaded. This reloc will tell us which function is
10057 actually being called. */
10059 hi_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10060 R_NDS32_HI20_RELA
, laddr
);
10062 if (hi_irel
== irelend
)
10064 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP4",
10065 (uint64_t) irel
->r_offset
);
10069 /* Get the value of the symbol referred to by the reloc. */
10070 foff
= calculate_offset (abfd
, sec
, hi_irel
, isymbuf
, symtab_hdr
,
10073 if (pic_ext_target
|| foff
== 0 || foff
>= CONSERVATIVE_24BIT_S1
10074 || foff
< -CONSERVATIVE_24BIT_S1
)
10077 /* Convert it to "j label", it may be converted to j8 in the final
10078 pass of relaxation. Therefore, we do not consider this currently. */
10079 ptr_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10080 R_NDS32_PTR_RESOLVED
, irel
->r_addend
);
10081 em_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10082 R_NDS32_EMPTY
, irel
->r_addend
);
10084 if (ptr_irel
== irelend
|| em_irel
== irelend
)
10086 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP4",
10087 (uint64_t) irel
->r_offset
);
10092 ELF32_R_INFO (ELF32_R_SYM (em_irel
->r_info
), R_NDS32_25_PCREL_RELA
);
10093 ptr_irel
->r_addend
= 1;
10095 /* Write instruction. */
10097 bfd_putb32 (insn
, contents
+ em_irel
->r_offset
);
10099 /* Clear relocations. */
10100 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
10102 /* If there is function cse, HI20 can not remove now. */
10103 call_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10104 R_NDS32_LONGJUMP4
, laddr
);
10105 if (call_irel
== irelend
)
10109 ELF32_R_INFO (ELF32_R_SYM (hi_irel
->r_info
), R_NDS32_NONE
);
10115 /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */
10118 nds32_elf_relax_longjump5 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
10119 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
10120 int *seq_len
, bfd_byte
*contents
,
10121 Elf_Internal_Sym
*isymbuf
,
10122 Elf_Internal_Shdr
*symtab_hdr
)
10124 /* There are 2 variations for LONGJUMP5
10125 case 2-4; 1st insn convertible, 16-bit on.
10126 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10127 j label ; 25_PCREL/INSN16
10130 case 4-4; 1st insn not convertible
10131 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10132 j label ; 25_PCREL/INSN16
10136 Elf_Internal_Rela
*cond_irel
, *irelend
;
10137 int pic_ext_target
= 0;
10139 bfd_signed_vma foff
;
10140 uint32_t insn
, re_insn
= 0;
10141 uint16_t insn16
, re_insn16
= 0;
10142 unsigned long reloc
;
10144 enum elf_nds32_reloc_type checked_types
[] =
10145 { R_NDS32_17_PCREL_RELA
, R_NDS32_15_PCREL_RELA
,
10146 R_NDS32_9_PCREL_RELA
, R_NDS32_INSN16
};
10148 irelend
= internal_relocs
+ sec
->reloc_count
;
10149 laddr
= irel
->r_offset
;
10151 /* Get the reloc for the address from which the register is
10152 being loaded. This reloc will tell us which function is
10153 actually being called. */
10156 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10157 R_NDS32_25_PCREL_RELA
, irel
->r_addend
);
10158 if (cond_irel
== irelend
)
10160 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP5",
10161 (uint64_t) irel
->r_offset
);
10165 /* Get the value of the symbol referred to by the reloc. */
10166 foff
= calculate_offset (abfd
, sec
, cond_irel
, isymbuf
, symtab_hdr
,
10169 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_16BIT_S1
10170 || foff
>= CONSERVATIVE_16BIT_S1
)
10173 /* Get the all corresponding instructions. */
10174 insn
= bfd_getb32 (contents
+ laddr
);
10175 /* Check instruction size. */
10176 if (insn
& 0x80000000)
10179 insn16
= insn
>> 16;
10180 nds32_elf_convert_branch (insn16
, 0, &re_insn16
, &re_insn
);
10183 nds32_elf_convert_branch (0, insn
, &re_insn16
, &re_insn
);
10185 if (N32_OP6 (re_insn
) == N32_OP6_BR1
10186 && (foff
>= -CONSERVATIVE_14BIT_S1
&& foff
< CONSERVATIVE_14BIT_S1
))
10188 /* beqs label ; 15_PCREL. */
10189 bfd_putb32 (re_insn
, contents
+ cond_irel
->r_offset
);
10190 reloc
= R_NDS32_15_PCREL_RELA
;
10192 else if (N32_OP6 (re_insn
) == N32_OP6_BR2
10193 && foff
>= -CONSERVATIVE_16BIT_S1
&& foff
< CONSERVATIVE_16BIT_S1
)
10195 /* beqz label ; 17_PCREL. */
10196 bfd_putb32 (re_insn
, contents
+ cond_irel
->r_offset
);
10197 reloc
= R_NDS32_17_PCREL_RELA
;
10199 else if ( N32_OP6 (re_insn
) == N32_OP6_BR3
10200 && foff
>= -CONSERVATIVE_8BIT_S1
&& foff
< CONSERVATIVE_8BIT_S1
)
10202 /* beqc label ; 9_PCREL. */
10203 bfd_putb32 (re_insn
, contents
+ cond_irel
->r_offset
);
10204 reloc
= R_NDS32_WORD_9_PCREL_RELA
;
10209 /* Set all relocations. */
10210 cond_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), reloc
);
10212 /* Clean relocations. */
10213 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
10214 for (i
= 0; i
< sizeof (checked_types
) / sizeof (checked_types
[0]); i
++)
10216 cond_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10217 checked_types
[i
], laddr
);
10218 if (cond_irel
!= irelend
)
10221 && (ELF32_R_TYPE (cond_irel
->r_info
) == R_NDS32_INSN16
))
10223 /* If the branch instruction is 2 byte, it cannot remove
10224 directly. Only convert it to nop16 and remove it after
10225 checking alignment issue. */
10226 insn16
= NDS32_NOP16
;
10227 bfd_putb16 (insn16
, contents
+ laddr
);
10228 cond_irel
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
10231 cond_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
),
10240 /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */
10243 nds32_elf_relax_longjump6 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
10244 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
10245 int *seq_len
, bfd_byte
*contents
,
10246 Elf_Internal_Sym
*isymbuf
,
10247 Elf_Internal_Shdr
*symtab_hdr
)
10249 /* There are 5 variations for LONGJUMP6
10250 case : 2-4-4-4; 1st insn convertible, 16-bit on.
10251 bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10252 sethi ta, hi20(symbol) ; HI20/PTR
10253 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10254 jr ta ; PTR_RES/INSN16/EMPTY
10257 case : 4-4-4-4; 1st insn not convertible, 16-bit on.
10258 bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16
10259 sethi ta, hi20(symbol) ; HI20/PTR
10260 ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR
10261 jr ta ; PTR_RES/INSN16/EMPTY
10264 enum elf_nds32_reloc_type checked_types
[] =
10265 { R_NDS32_17_PCREL_RELA
, R_NDS32_15_PCREL_RELA
,
10266 R_NDS32_9_PCREL_RELA
, R_NDS32_INSN16
};
10268 int reloc_off
= 0, cond_removed
= 0;
10270 Elf_Internal_Rela
*cond_irel
, *em_irel
, *irelend
, *insn_irel
;
10271 int pic_ext_target
= 0;
10273 bfd_signed_vma foff
;
10274 uint32_t insn
, re_insn
= 0;
10275 uint16_t insn16
, re_insn16
= 0;
10276 unsigned long reloc
;
10278 irelend
= internal_relocs
+ sec
->reloc_count
;
10279 laddr
= irel
->r_offset
;
10281 /* Get the reloc for the address from which the register is
10282 being loaded. This reloc will tell us which function is
10283 actually being called. */
10284 em_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10285 R_NDS32_EMPTY
, irel
->r_addend
);
10287 if (em_irel
== irelend
)
10289 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP6",
10290 (uint64_t) irel
->r_offset
);
10294 /* Get the value of the symbol referred to by the reloc. */
10295 foff
= calculate_offset (abfd
, sec
, em_irel
, isymbuf
, symtab_hdr
,
10298 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_24BIT_S1
10299 || foff
>= CONSERVATIVE_24BIT_S1
)
10302 insn
= bfd_getb32 (contents
+ laddr
);
10303 /* Check instruction size. */
10304 if (insn
& 0x80000000)
10307 insn16
= insn
>> 16;
10308 nds32_elf_convert_branch (insn16
, 0, &re_insn16
, &re_insn
);
10311 nds32_elf_convert_branch (0, insn
, &re_insn16
, &re_insn
);
10313 /* For simplicity of coding, we are going to modify the section
10314 contents, the section relocs, and the BFD symbol table. We
10315 must tell the rest of the code not to free up this
10316 information. It would be possible to instead create a table
10317 of changes which have to be made, as is done in coff-mips.c;
10318 that would be more work, but would require less memory when
10319 the linker is run. */
10321 if (N32_OP6 (re_insn
) == N32_OP6_BR1
10322 && (foff
>= -CONSERVATIVE_14BIT_S1
&& foff
< CONSERVATIVE_14BIT_S1
))
10324 /* beqs label ; 15_PCREL */
10325 bfd_putb32 (re_insn
, contents
+ em_irel
->r_offset
);
10326 reloc
= R_NDS32_15_PCREL_RELA
;
10329 else if (N32_OP6 (re_insn
) == N32_OP6_BR2
10330 && foff
>= -CONSERVATIVE_16BIT_S1
&& foff
< CONSERVATIVE_16BIT_S1
)
10332 /* beqz label ; 17_PCREL */
10333 bfd_putb32 (re_insn
, contents
+ em_irel
->r_offset
);
10334 reloc
= R_NDS32_17_PCREL_RELA
;
10337 else if (foff
>= -CONSERVATIVE_24BIT_S1
- reloc_off
10338 && foff
< CONSERVATIVE_24BIT_S1
- reloc_off
)
10340 /* Relax to one of the following 2 variations
10342 case 2-4; 1st insn convertible, 16-bit on.
10343 bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16
10344 j label ; 25_PCREL/INSN16
10347 case 4-4; 1st insn not convertible
10348 bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16
10349 j label ; 25_PCREL/INSN16
10352 /* Use j label as second instruction. */
10354 reloc
= R_NDS32_25_PCREL_RELA
;
10355 bfd_putb32 (insn
, contents
+ em_irel
->r_offset
);
10360 /* Set all relocations. */
10361 em_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (em_irel
->r_info
), reloc
);
10364 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10365 R_NDS32_PTR_RESOLVED
, em_irel
->r_offset
);
10366 cond_irel
->r_addend
= 1;
10368 /* Use INSN16 of first branch instruction to distinguish if keeping
10369 INSN16 of final instruction or not. */
10370 insn_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10371 R_NDS32_INSN16
, irel
->r_offset
);
10372 if (insn_irel
== irelend
)
10374 /* Clean the final INSN16. */
10376 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10377 R_NDS32_INSN16
, em_irel
->r_offset
);
10378 insn_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
),
10382 if (cond_removed
== 1)
10386 /* Clear relocations. */
10387 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
10389 for (i
= 0; i
< sizeof (checked_types
) / sizeof (checked_types
[0]); i
++)
10392 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10393 checked_types
[i
], laddr
);
10394 if (cond_irel
!= irelend
)
10397 && (ELF32_R_TYPE (cond_irel
->r_info
) == R_NDS32_INSN16
))
10399 /* If the branch instruction is 2 byte, it cannot remove
10400 directly. Only convert it to nop16 and remove it after
10401 checking alignment issue. */
10402 insn16
= NDS32_NOP16
;
10403 bfd_putb16 (insn16
, contents
+ laddr
);
10404 cond_irel
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
10407 cond_irel
->r_info
=
10408 ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
), R_NDS32_NONE
);
10414 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
10415 R_NDS32_LONGJUMP5
);
10421 /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */
10424 nds32_elf_relax_longjump7 (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
10425 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
10426 int *seq_len
, bfd_byte
*contents
,
10427 Elf_Internal_Sym
*isymbuf
,
10428 Elf_Internal_Shdr
*symtab_hdr
)
10430 /* There are 2 variations for LONGJUMP5
10431 case 2-4; 1st insn convertible, 16-bit on.
10432 movi55 ta, imm11 ; LONGJUMP7/INSN16
10433 beq rt, ta, label ; 15_PCREL
10435 case 4-4; 1st insn not convertible
10436 movi55 ta, imm11 ; LONGJUMP7/INSN16
10437 beq rt, ta, label ; 15_PCREL */
10440 Elf_Internal_Rela
*cond_irel
, *irelend
, *insn_irel
;
10441 int pic_ext_target
= 0;
10442 bfd_signed_vma foff
;
10443 uint32_t insn
, re_insn
= 0;
10447 irelend
= internal_relocs
+ sec
->reloc_count
;
10448 laddr
= irel
->r_offset
;
10450 /* Get the reloc for the address from which the register is
10451 being loaded. This reloc will tell us which function is
10452 actually being called. */
10455 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10456 R_NDS32_15_PCREL_RELA
, irel
->r_addend
);
10457 if (cond_irel
== irelend
)
10459 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LONGJUMP7",
10460 (uint64_t) irel
->r_offset
);
10464 /* Get the value of the symbol referred to by the reloc. */
10465 foff
= calculate_offset (abfd
, sec
, cond_irel
, isymbuf
, symtab_hdr
,
10468 if (pic_ext_target
|| foff
== 0 || foff
< -CONSERVATIVE_8BIT_S1
10469 || foff
>= CONSERVATIVE_8BIT_S1
)
10472 /* Get the first instruction for its size. */
10473 insn
= bfd_getb32 (contents
+ laddr
);
10474 if (insn
& 0x80000000)
10477 /* Get the immediate from movi55. */
10478 imm11
= N16_IMM5S (insn
>> 16);
10482 /* Get the immediate from movi. */
10483 imm11
= N32_IMM20S (insn
);
10486 /* Get the branch instruction. */
10487 insn
= bfd_getb32 (contents
+ irel
->r_addend
);
10488 /* Convert instruction to BR3. */
10489 if ((insn
>> 14) & 0x1)
10490 re_insn
= N32_BR3 (BNEC
, N32_RT5 (insn
), imm11
, 0);
10492 re_insn
= N32_BR3 (BEQC
, N32_RT5 (insn
), imm11
, 0);
10494 bfd_putb32 (re_insn
, contents
+ cond_irel
->r_offset
);
10496 /* Set all relocations. */
10497 cond_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
),
10498 R_NDS32_WORD_9_PCREL_RELA
);
10500 /* Clean relocations. */
10501 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
10502 insn_irel
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10503 R_NDS32_INSN16
, irel
->r_offset
);
10504 if (insn_irel
!= irelend
)
10508 /* If the first insntruction is 16bit, convert it to nop16. */
10509 insn16
= NDS32_NOP16
;
10510 bfd_putb16 (insn16
, contents
+ laddr
);
10511 insn_irel
->r_addend
= R_NDS32_INSN16_CONVERT_FLAG
;
10514 cond_irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (cond_irel
->r_info
),
10522 #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f)
10524 /* Relax LOADSTORE relocation for nds32_elf_relax_section. */
10527 nds32_elf_relax_loadstore (struct bfd_link_info
*link_info
, bfd
*abfd
,
10528 asection
*sec
, Elf_Internal_Rela
*irel
,
10529 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
10530 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10531 Elf_Internal_Shdr
*symtab_hdr
, int load_store_relax
)
10533 int eliminate_sethi
= 0, range_type
;
10535 bfd_vma local_sda
, laddr
;
10536 int seq_len
; /* Original length of instruction sequence. */
10538 Elf_Internal_Rela
*hi_irelfn
= NULL
, *irelend
;
10539 bfd_vma access_addr
= 0;
10540 bfd_vma range_l
= 0, range_h
= 0; /* Upper/lower bound. */
10541 enum elf_nds32_reloc_type checked_types
[] =
10542 { R_NDS32_HI20_RELA
, R_NDS32_GOT_HI20
,
10543 R_NDS32_GOTPC_HI20
, R_NDS32_GOTOFF_HI20
,
10544 R_NDS32_PLTREL_HI20
, R_NDS32_PLT_GOTREL_HI20
,
10545 R_NDS32_TLS_LE_HI20
10548 irelend
= internal_relocs
+ sec
->reloc_count
;
10549 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
10550 laddr
= irel
->r_offset
;
10551 *insn_len
= seq_len
;
10553 /* Get the high part relocation. */
10554 for (i
= 0; i
< ARRAY_SIZE (checked_types
); i
++)
10556 hi_irelfn
= find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
10557 checked_types
[i
], laddr
);
10558 if (hi_irelfn
!= irelend
)
10562 if (hi_irelfn
== irelend
)
10564 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_LOADSTORE",
10565 (uint64_t) irel
->r_offset
);
10569 range_type
= GET_LOADSTORE_RANGE (irel
->r_addend
);
10570 nds32_elf_final_sda_base (sec
->output_section
->owner
,
10571 link_info
, &local_sda
, FALSE
);
10573 switch (ELF32_R_TYPE (hi_irelfn
->r_info
))
10575 case R_NDS32_HI20_RELA
:
10576 insn
= bfd_getb32 (contents
+ laddr
);
10578 calculate_memory_address (abfd
, hi_irelfn
, isymbuf
, symtab_hdr
);
10580 if (range_type
== NDS32_LOADSTORE_IMM
)
10582 struct elf_link_hash_entry
*h
= NULL
;
10585 if (ELF32_R_SYM (hi_irelfn
->r_info
) >= symtab_hdr
->sh_info
)
10587 indx
= ELF32_R_SYM (hi_irelfn
->r_info
) - symtab_hdr
->sh_info
;
10588 h
= elf_sym_hashes (abfd
)[indx
];
10591 if ((access_addr
< CONSERVATIVE_20BIT
)
10592 && (!h
|| (h
&& strcmp (h
->root
.root
.string
, FP_BASE_NAME
) != 0)))
10594 eliminate_sethi
= 1;
10598 /* This is avoid to relax symbol address which is fixed
10599 relocations. Ex: _stack. */
10600 if (h
&& bfd_is_abs_section (h
->root
.u
.def
.section
))
10604 if (!load_store_relax
)
10607 /* Case for set gp register. */
10608 if (N32_RT5 (insn
) == REG_GP
)
10611 if (range_type
== NDS32_LOADSTORE_FLOAT_S
10612 || range_type
== NDS32_LOADSTORE_FLOAT_D
)
10614 range_l
= sdata_range
[0][0];
10615 range_h
= sdata_range
[0][1];
10619 range_l
= sdata_range
[1][0];
10620 range_h
= sdata_range
[1][1];
10624 case R_NDS32_GOT_HI20
:
10626 calculate_got_memory_address (abfd
, link_info
, hi_irelfn
, symtab_hdr
);
10628 /* If this symbol is not in .got, the return value will be -1.
10629 Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE,
10630 a negative offset is allowed. */
10631 if ((bfd_signed_vma
) (access_addr
- local_sda
) < CONSERVATIVE_20BIT
10632 && (bfd_signed_vma
) (access_addr
- local_sda
) >= -CONSERVATIVE_20BIT
)
10633 eliminate_sethi
= 1;
10636 case R_NDS32_PLT_GOTREL_HI20
:
10637 access_addr
= calculate_plt_memory_address (abfd
, link_info
, isymbuf
,
10638 hi_irelfn
, symtab_hdr
);
10640 if ((bfd_signed_vma
) (access_addr
- local_sda
) < CONSERVATIVE_20BIT
10641 && (bfd_signed_vma
) (access_addr
- local_sda
) >= -CONSERVATIVE_20BIT
)
10642 eliminate_sethi
= 1;
10645 case R_NDS32_GOTOFF_HI20
:
10647 calculate_memory_address (abfd
, hi_irelfn
, isymbuf
, symtab_hdr
);
10649 if ((bfd_signed_vma
) (access_addr
- local_sda
) < CONSERVATIVE_20BIT
10650 && (bfd_signed_vma
) (access_addr
- local_sda
) >= -CONSERVATIVE_20BIT
)
10651 eliminate_sethi
= 1;
10654 case R_NDS32_GOTPC_HI20
:
10655 /* The access_addr must consider r_addend of hi_irel. */
10656 access_addr
= sec
->output_section
->vma
+ sec
->output_offset
10657 + irel
->r_offset
+ hi_irelfn
->r_addend
;
10659 if ((bfd_signed_vma
) (local_sda
- access_addr
) < CONSERVATIVE_20BIT
10660 && (bfd_signed_vma
) (local_sda
- access_addr
) >= -CONSERVATIVE_20BIT
)
10661 eliminate_sethi
= 1;
10664 case R_NDS32_TLS_LE_HI20
:
10666 calculate_memory_address (abfd
, hi_irelfn
, isymbuf
, symtab_hdr
);
10667 BFD_ASSERT (elf_hash_table (link_info
)->tls_sec
!= NULL
);
10668 access_addr
-= (elf_hash_table (link_info
)->tls_sec
->vma
+ TP_OFFSET
);
10669 if ((range_type
== NDS32_LOADSTORE_IMM
)
10670 && (bfd_signed_vma
) (access_addr
) < CONSERVATIVE_20BIT
10671 && (bfd_signed_vma
) (access_addr
) >= -CONSERVATIVE_20BIT
)
10672 eliminate_sethi
= 1;
10679 /* Delete sethi instruction. */
10680 if (eliminate_sethi
== 1
10681 || (local_sda
<= access_addr
&& (access_addr
- local_sda
) < range_h
)
10682 || (local_sda
> access_addr
&& (local_sda
- access_addr
) <= range_l
))
10684 hi_irelfn
->r_info
=
10685 ELF32_R_INFO (ELF32_R_SYM (hi_irelfn
->r_info
), R_NDS32_NONE
);
10687 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
10693 /* Relax LO12 relocation for nds32_elf_relax_section. */
10696 nds32_elf_relax_lo12 (struct bfd_link_info
*link_info
, bfd
*abfd
,
10697 asection
*sec
, Elf_Internal_Rela
*irel
,
10698 Elf_Internal_Rela
*internal_relocs
, bfd_byte
*contents
,
10699 Elf_Internal_Sym
*isymbuf
, Elf_Internal_Shdr
*symtab_hdr
)
10702 bfd_vma local_sda
, laddr
;
10703 unsigned long reloc
;
10704 bfd_vma access_addr
;
10705 bfd_vma range_l
= 0, range_h
= 0; /* Upper/lower bound. */
10706 Elf_Internal_Rela
*irelfn
= NULL
, *irelend
;
10707 struct elf_link_hash_entry
*h
= NULL
;
10710 /* For SDA base relative relaxation. */
10711 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
10712 &local_sda
, FALSE
);
10714 irelend
= internal_relocs
+ sec
->reloc_count
;
10715 laddr
= irel
->r_offset
;
10716 insn
= bfd_getb32 (contents
+ laddr
);
10718 if (!is_sda_access_insn (insn
) && N32_OP6 (insn
) != N32_OP6_ORI
)
10721 access_addr
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
10723 if (ELF32_R_SYM (irel
->r_info
) >= symtab_hdr
->sh_info
)
10725 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
10726 h
= elf_sym_hashes (abfd
)[indx
];
10729 if (N32_OP6 (insn
) == N32_OP6_ORI
&& access_addr
< CONSERVATIVE_20BIT
10730 && (!h
|| (h
&& strcmp (h
->root
.root
.string
, FP_BASE_NAME
) != 0)))
10732 reloc
= R_NDS32_20_RELA
;
10733 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), reloc
);
10734 insn
= N32_TYPE1 (MOVI
, N32_RT5 (insn
), 0);
10735 bfd_putb32 (insn
, contents
+ laddr
);
10737 /* This is avoid to relax symbol address which is fixed
10738 relocations. Ex: _stack. */
10739 else if (N32_OP6 (insn
) == N32_OP6_ORI
10740 && h
&& bfd_is_abs_section (h
->root
.u
.def
.section
))
10744 range_l
= sdata_range
[1][0];
10745 range_h
= sdata_range
[1][1];
10746 switch (ELF32_R_TYPE (irel
->r_info
))
10748 case R_NDS32_LO12S0_RELA
:
10749 reloc
= R_NDS32_SDA19S0_RELA
;
10751 case R_NDS32_LO12S1_RELA
:
10752 reloc
= R_NDS32_SDA18S1_RELA
;
10754 case R_NDS32_LO12S2_RELA
:
10755 reloc
= R_NDS32_SDA17S2_RELA
;
10757 case R_NDS32_LO12S2_DP_RELA
:
10758 range_l
= sdata_range
[0][0];
10759 range_h
= sdata_range
[0][1];
10760 reloc
= R_NDS32_SDA12S2_DP_RELA
;
10762 case R_NDS32_LO12S2_SP_RELA
:
10763 range_l
= sdata_range
[0][0];
10764 range_h
= sdata_range
[0][1];
10765 reloc
= R_NDS32_SDA12S2_SP_RELA
;
10771 /* There are range_h and range_l because linker has to promise
10772 all sections move cross one page together. */
10773 if ((local_sda
<= access_addr
&& (access_addr
- local_sda
) < range_h
)
10774 || (local_sda
> access_addr
&& (local_sda
- access_addr
) <= range_l
))
10776 if (N32_OP6 (insn
) == N32_OP6_ORI
&& N32_RT5 (insn
) == REG_GP
)
10778 /* Maybe we should add R_NDS32_INSN16 reloc type here
10779 or manually do some optimization. sethi can't be
10780 eliminated when updating $gp so the relative ori
10781 needs to be preserved. */
10784 if (!turn_insn_to_sda_access (insn
, ELF32_R_TYPE (irel
->r_info
),
10787 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), reloc
);
10788 bfd_putb32 (insn
, contents
+ laddr
);
10790 irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
10792 /* SDA17 must keep INSN16 for converting fp_as_gp. */
10793 if (irelfn
!= irelend
&& reloc
!= R_NDS32_SDA17S2_RELA
)
10795 ELF32_R_INFO (ELF32_R_SYM (irelfn
->r_info
), R_NDS32_NONE
);
10802 /* Relax low part of PIC instruction pattern. */
10805 nds32_elf_relax_piclo12 (struct bfd_link_info
*link_info
, bfd
*abfd
,
10806 asection
*sec
, Elf_Internal_Rela
*irel
,
10807 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10808 Elf_Internal_Shdr
*symtab_hdr
)
10811 bfd_vma local_sda
, laddr
;
10812 bfd_signed_vma foff
;
10813 unsigned long reloc
;
10815 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
10816 &local_sda
, FALSE
);
10817 laddr
= irel
->r_offset
;
10818 insn
= bfd_getb32 (contents
+ laddr
);
10820 if (N32_OP6 (insn
) != N32_OP6_ORI
)
10823 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOT_LO12
)
10825 foff
= calculate_got_memory_address (abfd
, link_info
, irel
,
10826 symtab_hdr
) - local_sda
;
10827 reloc
= R_NDS32_GOT20
;
10829 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_PLT_GOTREL_LO12
)
10831 foff
= calculate_plt_memory_address (abfd
, link_info
, isymbuf
, irel
,
10832 symtab_hdr
) - local_sda
;
10833 reloc
= R_NDS32_PLT_GOTREL_LO20
;
10835 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOTOFF_LO12
)
10837 foff
= calculate_memory_address (abfd
, irel
, isymbuf
,
10838 symtab_hdr
) - local_sda
;
10839 reloc
= R_NDS32_GOTOFF
;
10841 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOTPC_LO12
)
10843 foff
= local_sda
- sec
->output_section
->vma
+ sec
->output_offset
10844 + irel
->r_offset
+ irel
->r_addend
;
10845 reloc
= R_NDS32_GOTPC20
;
10850 if ((foff
< CONSERVATIVE_20BIT
) && (foff
>= -CONSERVATIVE_20BIT
))
10852 /* Turn into MOVI. */
10853 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), reloc
);
10854 insn
= N32_TYPE1 (MOVI
, N32_RT5 (insn
), 0);
10855 bfd_putb32 (insn
, contents
+ laddr
);
10859 /* Relax low part of LE TLS instruction pattern. */
10862 nds32_elf_relax_letlslo12 (struct bfd_link_info
*link_info
, bfd
*abfd
,
10863 Elf_Internal_Rela
*irel
,
10864 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10865 Elf_Internal_Shdr
*symtab_hdr
)
10869 bfd_signed_vma foff
;
10870 unsigned long reloc
;
10872 laddr
= irel
->r_offset
;
10873 foff
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
10874 BFD_ASSERT (elf_hash_table (link_info
)->tls_sec
!= NULL
);
10875 foff
-= (elf_hash_table (link_info
)->tls_sec
->vma
+ TP_OFFSET
);
10876 insn
= bfd_getb32 (contents
+ laddr
);
10878 if ( (bfd_signed_vma
) (foff
) < CONSERVATIVE_20BIT
10879 && (bfd_signed_vma
) (foff
) >= -CONSERVATIVE_20BIT
)
10881 /* Pattern sethi-ori transform to movi. */
10882 reloc
= R_NDS32_TLS_LE_20
;
10883 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), reloc
);
10884 insn
= N32_TYPE1 (MOVI
, N32_RT5 (insn
), 0);
10885 bfd_putb32 (insn
, contents
+ laddr
);
10889 /* Relax LE TLS calculate address instruction pattern. */
10892 nds32_elf_relax_letlsadd (struct bfd_link_info
*link_info
, bfd
*abfd
,
10893 asection
*sec
, Elf_Internal_Rela
*irel
,
10894 Elf_Internal_Rela
*internal_relocs
,
10895 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10896 Elf_Internal_Shdr
*symtab_hdr
, bfd_boolean
*again
)
10898 /* Local TLS non-pic
10899 sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20
10900 ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12
10901 add ra, ta, tp ; TLS_LE_ADD */
10905 bfd_signed_vma foff
;
10906 Elf_Internal_Rela
*i1_irelfn
, *irelend
;
10908 irelend
= internal_relocs
+ sec
->reloc_count
;
10909 laddr
= irel
->r_offset
;
10910 insn
= bfd_getb32 (contents
+ laddr
);
10911 i1_irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
10912 R_NDS32_PTR_RESOLVED
);
10913 foff
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
10914 BFD_ASSERT (elf_hash_table (link_info
)->tls_sec
!= NULL
);
10915 foff
-= (elf_hash_table (link_info
)->tls_sec
->vma
+ TP_OFFSET
);
10917 /* The range is +/-16k. */
10918 if ((bfd_signed_vma
) (foff
) < CONSERVATIVE_15BIT
10919 && (bfd_signed_vma
) (foff
) >= -CONSERVATIVE_15BIT
)
10921 /* Transform add to addi. */
10922 insn
= N32_TYPE2 (ADDI
, N32_RT5 (insn
), N32_RB5 (insn
), 0);
10924 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_TLS_LE_15S0
);
10926 bfd_putb32 (insn
, contents
+ laddr
);
10927 if (i1_irelfn
!= irelend
)
10929 i1_irelfn
->r_addend
|= 1;
10935 /* Relax LE TLS load store instruction pattern. */
10938 nds32_elf_relax_letlsls (struct bfd_link_info
*link_info
, bfd
*abfd
,
10939 asection
*sec
, Elf_Internal_Rela
*irel
,
10940 Elf_Internal_Rela
*internal_relocs
,
10941 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
10942 Elf_Internal_Shdr
*symtab_hdr
, bfd_boolean
*again
)
10947 bfd_signed_vma foff
;
10948 Elf_Internal_Rela
*i1_irelfn
, *irelend
;
10951 irelend
= internal_relocs
+ sec
->reloc_count
;
10952 laddr
= irel
->r_offset
;
10953 insn
= bfd_getb32 (contents
+ laddr
);
10954 i1_irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
10955 R_NDS32_PTR_RESOLVED
);
10956 foff
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
10957 BFD_ASSERT (elf_hash_table (link_info
)->tls_sec
!= NULL
);
10958 foff
-= (elf_hash_table (link_info
)->tls_sec
->vma
+ TP_OFFSET
);
10960 switch ((N32_OP6 (insn
) << 8) | (insn
& 0xff))
10962 case (N32_OP6_MEM
<< 8) | N32_MEM_LB
:
10963 case (N32_OP6_MEM
<< 8) | N32_MEM_SB
:
10964 case (N32_OP6_MEM
<< 8) | N32_MEM_LBS
:
10965 /* The range is +/-16k. */
10966 if ((bfd_signed_vma
) (foff
) < CONSERVATIVE_15BIT
10967 && (bfd_signed_vma
) (foff
) >= -CONSERVATIVE_15BIT
)
10970 ((insn
& 0xff) << 25) | (insn
& 0x1f00000) | ((insn
& 0x7c00) << 5);
10972 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_TLS_LE_15S0
);
10976 /* Fall through. */
10977 case (N32_OP6_MEM
<< 8) | N32_MEM_LH
:
10978 case (N32_OP6_MEM
<< 8) | N32_MEM_SH
:
10979 case (N32_OP6_MEM
<< 8) | N32_MEM_LHS
:
10980 /* The range is +/-32k. */
10981 if ((bfd_signed_vma
) (foff
) < CONSERVATIVE_15BIT_S1
10982 && (bfd_signed_vma
) (foff
) >= -CONSERVATIVE_15BIT_S1
)
10985 ((insn
& 0xff) << 25) | (insn
& 0x1f00000) | ((insn
& 0x7c00) << 5);
10987 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_TLS_LE_15S1
);
10991 /* Fall through. */
10992 case (N32_OP6_MEM
<< 8) | N32_MEM_LW
:
10993 case (N32_OP6_MEM
<< 8) | N32_MEM_SW
:
10994 /* The range is +/-64k. */
10995 if ((bfd_signed_vma
) (foff
) < CONSERVATIVE_15BIT_S2
10996 && (bfd_signed_vma
) (foff
) >= -CONSERVATIVE_15BIT_S2
)
10999 ((insn
& 0xff) << 25) | (insn
& 0x1f00000) | ((insn
& 0x7c00) << 5);
11001 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_TLS_LE_15S2
);
11005 /* Fall through. */
11012 bfd_putb32 (insn
, contents
+ laddr
);
11013 if (i1_irelfn
!= irelend
)
11015 i1_irelfn
->r_addend
|= 1;
11021 /* Relax PTR relocation for nds32_elf_relax_section. */
11024 nds32_elf_relax_ptr (bfd
*abfd
, asection
*sec
, Elf_Internal_Rela
*irel
,
11025 Elf_Internal_Rela
*internal_relocs
, int *insn_len
,
11026 int *seq_len
, bfd_byte
*contents
)
11028 Elf_Internal_Rela
*ptr_irel
, *irelend
, *count_irel
, *re_irel
;
11030 irelend
= internal_relocs
+ sec
->reloc_count
;
11033 find_relocs_at_address_addr (irel
, internal_relocs
, irelend
,
11034 R_NDS32_PTR_RESOLVED
, irel
->r_addend
);
11036 if (re_irel
== irelend
)
11038 _bfd_error_handler (unrecognized_reloc_msg
, abfd
, "R_NDS32_PTR",
11039 (uint64_t) irel
->r_offset
);
11043 if (re_irel
->r_addend
!= 1)
11046 /* Pointed target is relaxed and no longer needs this void *,
11047 change the type to NONE. */
11048 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
11050 /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does
11051 not exist, it means only count 1 and remove it directly. */
11052 /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */
11053 count_irel
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
11054 R_NDS32_PTR_COUNT
);
11055 ptr_irel
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
11057 if (count_irel
!= irelend
)
11059 if (--count_irel
->r_addend
> 0)
11063 if (ptr_irel
!= irelend
)
11066 /* If the PTR_COUNT is already 0, remove current instruction. */
11067 *seq_len
= nds32_elf_insn_size (abfd
, contents
, irel
->r_offset
);
11072 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11075 nds32_elf_relax_pltgot_suff (struct bfd_link_info
*link_info
, bfd
*abfd
,
11076 asection
*sec
, Elf_Internal_Rela
*irel
,
11077 Elf_Internal_Rela
*internal_relocs
,
11078 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
11079 Elf_Internal_Shdr
*symtab_hdr
, bfd_boolean
*again
)
11082 bfd_signed_vma foff
;
11083 Elf_Internal_Rela
*i1_irelfn
, *irelend
;
11084 bfd_vma local_sda
, laddr
;
11086 irelend
= internal_relocs
+ sec
->reloc_count
;
11087 laddr
= irel
->r_offset
;
11088 insn
= bfd_getb32 (contents
+ laddr
);
11090 /* FIXME: It's a little trouble to turn JRAL5 to JAL since
11091 we need additional space. It might be help if we could
11092 borrow some space from instructions to be eliminated
11093 such as sethi, ori, add. */
11094 if (insn
& 0x80000000)
11097 if (nds32_elf_check_dup_relocs
11098 (irel
, internal_relocs
, irelend
, R_NDS32_PLT_GOT_SUFF
))
11102 find_relocs_at_address (irel
, internal_relocs
, irelend
,
11103 R_NDS32_PTR_RESOLVED
);
11106 The boundary should be reduced since the .plt section hasn't
11107 been created and the address of specific entry is still unknown
11108 Maybe the range between the function call and the begin of the
11109 .text section can be used to decide if the .plt is in the range
11110 of function call. */
11112 if (N32_OP6 (insn
) == N32_OP6_ALU1
11113 && N32_SUB5 (insn
) == N32_ALU1_ADD
)
11115 /* Get the value of the symbol referred to by the reloc. */
11116 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
11117 &local_sda
, FALSE
);
11118 foff
= (bfd_signed_vma
) (calculate_plt_memory_address
11119 (abfd
, link_info
, isymbuf
, irel
,
11120 symtab_hdr
) - local_sda
);
11121 /* This condition only happened when symbol is undefined. */
11125 if (foff
< -CONSERVATIVE_19BIT
|| foff
>= CONSERVATIVE_19BIT
)
11127 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
11128 R_NDS32_PLT_GOTREL_LO19
);
11130 insn
= N32_TYPE1 (SBGP
, N32_RT5 (insn
), N32_BIT (19));
11132 else if (N32_OP6 (insn
) == N32_OP6_JREG
11133 && N32_SUB5 (insn
) == N32_JREG_JRAL
)
11135 /* Get the value of the symbol referred to by the reloc. */
11137 calculate_plt_offset (abfd
, sec
, link_info
, isymbuf
, irel
, symtab_hdr
);
11138 /* This condition only happened when symbol is undefined. */
11141 if (foff
< -CONSERVATIVE_24BIT_S1
|| foff
>= CONSERVATIVE_24BIT_S1
)
11143 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_25_PLTREL
);
11149 bfd_putb32 (insn
, contents
+ laddr
);
11150 if (i1_irelfn
!= irelend
)
11152 i1_irelfn
->r_addend
|= 1;
11157 /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */
11160 nds32_elf_relax_got_suff (struct bfd_link_info
*link_info
, bfd
*abfd
,
11161 asection
*sec
, Elf_Internal_Rela
*irel
,
11162 Elf_Internal_Rela
*internal_relocs
,
11163 bfd_byte
*contents
, Elf_Internal_Shdr
*symtab_hdr
,
11164 bfd_boolean
*again
)
11167 bfd_signed_vma foff
;
11168 Elf_Internal_Rela
*i1_irelfn
, *irelend
;
11169 bfd_vma local_sda
, laddr
;
11171 irelend
= internal_relocs
+ sec
->reloc_count
;
11172 laddr
= irel
->r_offset
;
11173 insn
= bfd_getb32 (contents
+ laddr
);
11174 if (insn
& 0x80000000)
11177 if (nds32_elf_check_dup_relocs
11178 (irel
, internal_relocs
, irelend
, R_NDS32_GOT_SUFF
))
11181 i1_irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
11182 R_NDS32_PTR_RESOLVED
);
11184 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
11185 &local_sda
, FALSE
);
11186 foff
= calculate_got_memory_address (abfd
, link_info
, irel
,
11187 symtab_hdr
) - local_sda
;
11189 if (foff
< CONSERVATIVE_19BIT
&& foff
>= -CONSERVATIVE_19BIT
)
11191 /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */
11192 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), __MF (6, 17, 3));
11194 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_GOT17S2_RELA
);
11195 bfd_putb32 (insn
, contents
+ laddr
);
11196 if (i1_irelfn
!= irelend
)
11198 i1_irelfn
->r_addend
|= 1;
11204 /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */
11207 nds32_elf_relax_gotoff_suff (struct bfd_link_info
*link_info
, bfd
*abfd
,
11208 asection
*sec
, Elf_Internal_Rela
*irel
,
11209 Elf_Internal_Rela
*internal_relocs
,
11210 bfd_byte
*contents
, Elf_Internal_Sym
*isymbuf
,
11211 Elf_Internal_Shdr
*symtab_hdr
, bfd_boolean
*again
)
11213 int opc_insn_gotoff
;
11215 bfd_signed_vma foff
;
11216 Elf_Internal_Rela
*i1_irelfn
, *i2_irelfn
, *irelend
;
11217 bfd_vma local_sda
, laddr
;
11219 irelend
= internal_relocs
+ sec
->reloc_count
;
11220 laddr
= irel
->r_offset
;
11221 insn
= bfd_getb32 (contents
+ laddr
);
11223 if (insn
& 0x80000000)
11226 if (nds32_elf_check_dup_relocs
11227 (irel
, internal_relocs
, irelend
, R_NDS32_GOTOFF_SUFF
))
11230 i1_irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
11231 R_NDS32_PTR_RESOLVED
);
11232 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
11233 &local_sda
, FALSE
);
11234 foff
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
11235 foff
= foff
- local_sda
;
11237 if (foff
>= CONSERVATIVE_19BIT
|| foff
< -CONSERVATIVE_19BIT
)
11240 /* Concatenate opcode and sub-opcode for switch case.
11241 It may be MEM or ALU1. */
11242 opc_insn_gotoff
= (N32_OP6 (insn
) << 8) | (insn
& 0xff);
11243 switch (opc_insn_gotoff
)
11245 case (N32_OP6_MEM
<< 8) | N32_MEM_LW
:
11246 /* 4-byte aligned. */
11247 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), __MF (6, 17, 3));
11249 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA17S2_RELA
);
11251 case (N32_OP6_MEM
<< 8) | N32_MEM_SW
:
11252 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), __MF (7, 17, 3));
11254 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA17S2_RELA
);
11256 case (N32_OP6_MEM
<< 8) | N32_MEM_LH
:
11257 /* 2-byte aligned. */
11258 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), 0);
11260 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA18S1_RELA
);
11262 case (N32_OP6_MEM
<< 8) | N32_MEM_LHS
:
11263 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), N32_BIT (18));
11265 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA18S1_RELA
);
11267 case (N32_OP6_MEM
<< 8) | N32_MEM_SH
:
11268 insn
= N32_TYPE1 (HWGP
, N32_RT5 (insn
), N32_BIT (19));
11270 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA18S1_RELA
);
11272 case (N32_OP6_MEM
<< 8) | N32_MEM_LB
:
11273 /* 1-byte aligned. */
11274 insn
= N32_TYPE1 (LBGP
, N32_RT5 (insn
), 0);
11276 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA19S0_RELA
);
11278 case (N32_OP6_MEM
<< 8) | N32_MEM_LBS
:
11279 insn
= N32_TYPE1 (LBGP
, N32_RT5 (insn
), N32_BIT (19));
11281 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA19S0_RELA
);
11283 case (N32_OP6_MEM
<< 8) | N32_MEM_SB
:
11284 insn
= N32_TYPE1 (SBGP
, N32_RT5 (insn
), 0);
11286 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA19S0_RELA
);
11288 case (N32_OP6_ALU1
<< 8) | N32_ALU1_ADD
:
11289 insn
= N32_TYPE1 (SBGP
, N32_RT5 (insn
), N32_BIT (19));
11291 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_SDA19S0_RELA
);
11297 bfd_putb32 (insn
, contents
+ laddr
);
11298 if (i1_irelfn
!= irelend
)
11300 i1_irelfn
->r_addend
|= 1;
11303 if ((i2_irelfn
= find_relocs_at_address (irel
, internal_relocs
, irelend
,
11304 R_NDS32_INSN16
)) != irelend
)
11305 i2_irelfn
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
11310 nds32_relax_adjust_label (bfd
*abfd
, asection
*sec
,
11311 Elf_Internal_Rela
*internal_relocs
,
11312 bfd_byte
*contents
,
11313 nds32_elf_blank_t
**relax_blank_list
,
11314 int optimize
, int opt_size
)
11316 /* This code block is used to adjust 4-byte alignment by relax a pair
11317 of instruction a time.
11319 It recognizes three types of relocations.
11320 1. R_NDS32_LABEL - a alignment.
11321 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit.
11322 3. is_16bit_NOP () - remove a 16-bit instruction. */
11324 /* TODO: It seems currently implementation only support 4-byte alignment.
11325 We should handle any-alignment. */
11327 Elf_Internal_Rela
*insn_rel
= NULL
, *label_rel
= NULL
, *irel
;
11328 Elf_Internal_Rela
*tmp_rel
, *tmp2_rel
= NULL
;
11329 Elf_Internal_Rela rel_temp
;
11330 Elf_Internal_Rela
*irelend
;
11334 /* Checking for branch relaxation relies on the relocations to
11335 be sorted on 'r_offset'. This is not guaranteed so we must sort. */
11336 nds32_insertion_sort (internal_relocs
, sec
->reloc_count
,
11337 sizeof (Elf_Internal_Rela
), compar_reloc
);
11339 irelend
= internal_relocs
+ sec
->reloc_count
;
11341 /* Force R_NDS32_LABEL before R_NDS32_INSN16. */
11342 /* FIXME: Can we generate the right order in assembler?
11343 So we don't have to swapping them here. */
11345 for (label_rel
= internal_relocs
, insn_rel
= internal_relocs
;
11346 label_rel
< irelend
; label_rel
++)
11348 if (ELF32_R_TYPE (label_rel
->r_info
) != R_NDS32_LABEL
)
11351 /* Find the first reloc has the same offset with label_rel. */
11352 while (insn_rel
< irelend
&& insn_rel
->r_offset
< label_rel
->r_offset
)
11355 for (;insn_rel
< irelend
&& insn_rel
->r_offset
== label_rel
->r_offset
;
11357 /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same
11359 if (ELF32_R_TYPE (insn_rel
->r_info
) == R_NDS32_INSN16
)
11362 if (insn_rel
< irelend
&& insn_rel
->r_offset
== label_rel
->r_offset
11363 && insn_rel
< label_rel
)
11365 /* Swap the two reloc if the R_NDS32_INSN16 is
11366 before R_NDS32_LABEL. */
11367 memcpy (&rel_temp
, insn_rel
, sizeof (Elf_Internal_Rela
));
11368 memcpy (insn_rel
, label_rel
, sizeof (Elf_Internal_Rela
));
11369 memcpy (label_rel
, &rel_temp
, sizeof (Elf_Internal_Rela
));
11375 /* If there were a sequence of R_NDS32_LABEL end up with .align 2
11376 or higher, remove other R_NDS32_LABEL with lower alignment.
11377 If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted,
11378 then the R_NDS32_LABEL sequence is broke. */
11379 for (tmp_rel
= internal_relocs
; tmp_rel
< irelend
; tmp_rel
++)
11381 if (ELF32_R_TYPE (tmp_rel
->r_info
) == R_NDS32_LABEL
)
11383 if (label_rel
== NULL
)
11385 if (tmp_rel
->r_addend
< 2)
11386 label_rel
= tmp_rel
;
11389 else if (tmp_rel
->r_addend
> 1)
11391 /* Remove all LABEL relocation from label_rel to tmp_rel
11392 including relocations with same offset as tmp_rel. */
11393 for (tmp2_rel
= label_rel
; tmp2_rel
< tmp_rel
11394 || tmp2_rel
->r_offset
== tmp_rel
->r_offset
; tmp2_rel
++)
11396 if (ELF32_R_TYPE (tmp2_rel
->r_info
) == R_NDS32_LABEL
11397 && tmp2_rel
->r_addend
< 2)
11399 ELF32_R_INFO (ELF32_R_SYM (tmp2_rel
->r_info
),
11405 else if (ELF32_R_TYPE (tmp_rel
->r_info
) == R_NDS32_INSN16
&& label_rel
)
11407 /* A new INSN16 which can be converted, so clear label_rel. */
11408 if (is_convert_32_to_16 (abfd
, sec
, tmp_rel
, internal_relocs
,
11410 || is_16bit_NOP (abfd
, sec
, tmp_rel
))
11417 /* Optimized for speed and nothing has not been relaxed.
11418 It's time to align labels.
11419 We may convert a 16-bit instruction right before a label to
11420 32-bit, in order to align the label if necessary
11421 all reloc entries has been sorted by r_offset. */
11422 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
11424 if (ELF32_R_TYPE (irel
->r_info
) != R_NDS32_INSN16
11425 && ELF32_R_TYPE (irel
->r_info
) != R_NDS32_LABEL
)
11428 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_INSN16
)
11430 /* A new INSN16 found, resize the old one. */
11431 if (is_convert_32_to_16
11432 (abfd
, sec
, irel
, internal_relocs
, irelend
, &insn16
)
11433 || is_16bit_NOP (abfd
, sec
, irel
))
11437 /* Previous INSN16 reloc exists, reduce its
11439 if (is_convert_32_to_16 (abfd
, sec
, insn_rel
, internal_relocs
,
11442 nds32_elf_write_16 (abfd
, contents
, insn_rel
,
11443 internal_relocs
, irelend
, insn16
);
11445 if (!insert_nds32_elf_blank_recalc_total
11446 (relax_blank_list
, insn_rel
->r_offset
+ 2, 2))
11449 else if (is_16bit_NOP (abfd
, sec
, insn_rel
))
11451 if (!insert_nds32_elf_blank_recalc_total
11452 (relax_blank_list
, insn_rel
->r_offset
, 2))
11456 ELF32_R_INFO (ELF32_R_SYM (insn_rel
->r_info
), R_NDS32_NONE
);
11458 /* Save the new one for later use. */
11462 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
11465 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
)
11467 /* Search for label. */
11468 int force_relax
= 0;
11470 /* Label on 16-bit instruction or optimization
11471 needless, just reset this reloc. */
11472 insn16
= bfd_getb16 (contents
+ irel
->r_offset
);
11473 if ((irel
->r_addend
& 0x1f) < 2 && (!optimize
|| (insn16
& 0x8000)))
11476 ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
), R_NDS32_NONE
);
11481 irel
->r_offset
- get_nds32_elf_blank_total (relax_blank_list
,
11482 irel
->r_offset
, 1);
11486 /* Check if there is case which can not be aligned. */
11487 if (irel
->r_addend
== 2 && address
& 0x2)
11492 /* Try to align this label. */
11494 if ((irel
->r_addend
& 0x1f) < 2)
11496 /* Check if there is a INSN16 at the same address.
11497 Label_rel always seats before insn_rel after
11500 /* Search for INSN16 at LABEL location. If INSN16 is at
11501 same location and this LABEL alignment is lower than 2,
11502 the INSN16 can be converted to 2-byte. */
11503 for (tmp_rel
= irel
;
11504 tmp_rel
< irelend
&& tmp_rel
->r_offset
== irel
->r_offset
;
11507 if (ELF32_R_TYPE (tmp_rel
->r_info
) == R_NDS32_INSN16
11508 && (is_convert_32_to_16
11509 (abfd
, sec
, tmp_rel
, internal_relocs
,
11511 || is_16bit_NOP (abfd
, sec
, tmp_rel
)))
11519 if (force_relax
|| irel
->r_addend
== 1 || address
& 0x2)
11521 /* Label not aligned. */
11522 /* Previous reloc exists, reduce its size to 16-bit. */
11523 if (is_convert_32_to_16 (abfd
, sec
, insn_rel
,
11524 internal_relocs
, irelend
, &insn16
))
11526 nds32_elf_write_16 (abfd
, contents
, insn_rel
,
11527 internal_relocs
, irelend
, insn16
);
11529 if (!insert_nds32_elf_blank_recalc_total
11530 (relax_blank_list
, insn_rel
->r_offset
+ 2, 2))
11533 else if (is_16bit_NOP (abfd
, sec
, insn_rel
))
11535 if (!insert_nds32_elf_blank_recalc_total
11536 (relax_blank_list
, insn_rel
->r_offset
, 2))
11541 /* INSN16 reloc is used. */
11547 sec
->size
- get_nds32_elf_blank_total (relax_blank_list
, sec
->size
, 0);
11548 if (insn_rel
&& (address
& 0x2 || opt_size
))
11550 if (is_convert_32_to_16 (abfd
, sec
, insn_rel
, internal_relocs
,
11553 nds32_elf_write_16 (abfd
, contents
, insn_rel
, internal_relocs
,
11555 if (!insert_nds32_elf_blank_recalc_total
11556 (relax_blank_list
, insn_rel
->r_offset
+ 2, 2))
11558 insn_rel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (insn_rel
->r_info
),
11561 else if (is_16bit_NOP (abfd
, sec
, insn_rel
))
11563 if (!insert_nds32_elf_blank_recalc_total
11564 (relax_blank_list
, insn_rel
->r_offset
, 2))
11566 insn_rel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (insn_rel
->r_info
),
11574 /* Pick relaxation round. */
11577 nds32_elf_pick_relax (bfd_boolean init
, asection
*sec
, bfd_boolean
*again
,
11578 struct elf_nds32_link_hash_table
*table
,
11579 struct bfd_link_info
*link_info
)
11581 static asection
*final_sec
, *first_sec
= NULL
;
11582 static bfd_boolean normal_again
= FALSE
;
11583 static bfd_boolean set
= FALSE
;
11584 static bfd_boolean first
= TRUE
;
11585 int round_table
[] = {
11586 NDS32_RELAX_NORMAL_ROUND
,
11587 NDS32_RELAX_JUMP_IFC_ROUND
,
11588 NDS32_RELAX_EX9_BUILD_ROUND
,
11589 NDS32_RELAX_EX9_REPLACE_ROUND
,
11591 static int pass
= 0;
11592 static int relax_round
;
11594 /* The new round. */
11595 if (init
&& first_sec
== sec
)
11598 normal_again
= FALSE
;
11603 /* Run an empty run to get the final section. */
11604 relax_round
= NDS32_RELAX_EMPTY_ROUND
;
11606 /* It has to enter relax again because we can
11607 not make sure what the final turn is. */
11616 /* Not reenter yet. */
11618 return relax_round
;
11621 relax_round
= round_table
[pass
];
11623 if (!init
&& relax_round
== NDS32_RELAX_NORMAL_ROUND
&& *again
)
11624 normal_again
= TRUE
;
11626 if (!init
&& final_sec
== sec
)
11628 switch (relax_round
)
11630 case NDS32_RELAX_NORMAL_ROUND
:
11633 /* Normal relaxation done. */
11634 if (table
->target_optimize
& NDS32_RELAX_JUMP_IFC_ON
)
11639 else if (table
->target_optimize
& NDS32_RELAX_EX9_ON
)
11641 pass
+= 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11644 else if (table
->ex9_import_file
)
11646 /* Import ex9 table. */
11647 if (table
->update_ex9_table
)
11648 pass
+= 2; /* NDS32_RELAX_EX9_BUILD_ROUND */
11650 pass
+= 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */
11651 nds32_elf_ex9_import_table (link_info
);
11656 case NDS32_RELAX_JUMP_IFC_ROUND
:
11657 if (!nds32_elf_ifc_finish (link_info
))
11658 _bfd_error_handler (_("error: jump IFC fail"));
11659 if (table
->target_optimize
& NDS32_RELAX_EX9_ON
)
11665 case NDS32_RELAX_EX9_BUILD_ROUND
:
11666 nds32_elf_ex9_finish (link_info
);
11670 case NDS32_RELAX_EX9_REPLACE_ROUND
:
11671 if (table
->target_optimize
& NDS32_RELAX_JUMP_IFC_ON
)
11673 /* Do jump IFC optimization again. */
11674 if (!nds32_elf_ifc_finish (link_info
))
11675 _bfd_error_handler (_("error: jump IFC fail"));
11683 return relax_round
;
11687 nds32_elf_relax_section (bfd
*abfd
, asection
*sec
,
11688 struct bfd_link_info
*link_info
, bfd_boolean
*again
)
11690 nds32_elf_blank_t
*relax_blank_list
= NULL
;
11691 Elf_Internal_Shdr
*symtab_hdr
;
11692 Elf_Internal_Rela
*internal_relocs
;
11693 Elf_Internal_Rela
*irel
;
11694 Elf_Internal_Rela
*irelend
;
11695 Elf_Internal_Sym
*isymbuf
= NULL
;
11696 bfd_byte
*contents
= NULL
;
11697 bfd_boolean result
= TRUE
;
11703 /* Target dependnet option. */
11704 struct elf_nds32_link_hash_table
*table
;
11705 int load_store_relax
;
11708 relax_blank_list
= NULL
;
11712 /* Nothing to do for
11713 * relocatable link or
11714 * non-relocatable section or
11715 * non-code section or
11717 * no reloc entry. */
11718 if (bfd_link_relocatable (link_info
)
11719 || (sec
->flags
& SEC_RELOC
) == 0
11720 || (sec
->flags
& SEC_EXCLUDE
) != 0
11721 || (sec
->flags
& SEC_CODE
) == 0
11725 /* 09.12.11 Workaround. */
11726 /* We have to adjust align for R_NDS32_LABEL if needed.
11727 The adjust approach only can fix 2-byte align once. */
11728 if (sec
->alignment_power
> 2)
11731 /* The optimization type to do. */
11733 table
= nds32_elf_hash_table (link_info
);
11734 relax_round
= nds32_elf_pick_relax (TRUE
, sec
, again
, table
, link_info
);
11735 switch (relax_round
)
11737 case NDS32_RELAX_JUMP_IFC_ROUND
:
11738 /* Here is the entrance of ifc jump relaxation. */
11739 if (!nds32_elf_ifc_calc (link_info
, abfd
, sec
))
11741 nds32_elf_pick_relax (FALSE
, sec
, again
, table
, link_info
);
11744 case NDS32_RELAX_EX9_BUILD_ROUND
:
11745 /* Here is the entrance of ex9 relaxation. There are two pass of
11746 ex9 relaxation. The one is to traverse all instructions and build
11747 the hash table. The other one is to compare instructions and replace
11749 if (!nds32_elf_ex9_build_hash_table (abfd
, sec
, link_info
))
11751 nds32_elf_pick_relax (FALSE
, sec
, again
, table
, link_info
);
11754 case NDS32_RELAX_EX9_REPLACE_ROUND
:
11755 if (!nds32_elf_ex9_replace_instruction (link_info
, abfd
, sec
))
11759 case NDS32_RELAX_EMPTY_ROUND
:
11760 nds32_elf_pick_relax (FALSE
, sec
, again
, table
, link_info
);
11763 case NDS32_RELAX_NORMAL_ROUND
:
11765 if (sec
->reloc_count
== 0)
11770 /* The begining of general relaxation. */
11772 if (is_SDA_BASE_set
== 0)
11775 is_SDA_BASE_set
= 1;
11776 nds32_elf_final_sda_base (sec
->output_section
->owner
, link_info
,
11778 relax_range_measurement (abfd
);
11781 if (is_ITB_BASE_set
== 0)
11783 /* Set the _ITB_BASE_. */
11784 if (!nds32_elf_ex9_itb_base (link_info
))
11786 _bfd_error_handler (_("%pB: error: cannot set %s"),
11787 abfd
, "_ITB_BASE_");
11788 bfd_set_error (bfd_error_bad_value
);
11792 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
11793 /* Relocations MUST be kept in memory, because relaxation adjust them. */
11794 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
11795 TRUE
/* keep_memory */);
11796 if (internal_relocs
== NULL
)
11799 irelend
= internal_relocs
+ sec
->reloc_count
;
11800 irel
= find_relocs_at_address (internal_relocs
, internal_relocs
,
11801 irelend
, R_NDS32_RELAX_ENTRY
);
11803 if (irel
== irelend
)
11806 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_ENTRY
)
11808 if (irel
->r_addend
& R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG
)
11810 nds32_elf_pick_relax (FALSE
, sec
, again
, table
, link_info
);
11814 if (irel
->r_addend
& R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG
)
11817 if (irel
->r_addend
& R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG
)
11821 load_store_relax
= table
->load_store_relax
;
11823 /* Get symbol table and section content. */
11824 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
)
11825 || !nds32_get_local_syms (abfd
, sec
, &isymbuf
))
11828 /* Do relax loop only when finalize is not done.
11829 Take care of relaxable relocs except INSN16. */
11830 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
11832 int seq_len
; /* Original length of instruction sequence. */
11833 int insn_len
= 0; /* Final length of instruction sequence. */
11834 bfd_boolean removed
;
11837 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
11838 && (irel
->r_addend
& 0x1f) >= 2)
11841 /* Relocation Types
11842 R_NDS32_LONGCALL1 53
11843 R_NDS32_LONGCALL2 54
11844 R_NDS32_LONGCALL3 55
11845 R_NDS32_LONGJUMP1 56
11846 R_NDS32_LONGJUMP2 57
11847 R_NDS32_LONGJUMP3 58
11848 R_NDS32_LOADSTORE 59 */
11849 if (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_LONGCALL1
11850 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_LOADSTORE
)
11851 seq_len
= GET_SEQ_LEN (irel
->r_addend
);
11853 /* Relocation Types
11854 R_NDS32_LONGCALL4 107
11855 R_NDS32_LONGCALL5 108
11856 R_NDS32_LONGCALL6 109
11857 R_NDS32_LONGJUMP4 110
11858 R_NDS32_LONGJUMP5 111
11859 R_NDS32_LONGJUMP6 112
11860 R_NDS32_LONGJUMP7 113 */
11861 else if (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_LONGCALL4
11862 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_LONGJUMP7
)
11865 /* Relocation Types
11866 R_NDS32_LO12S0_RELA 30
11867 R_NDS32_LO12S1_RELA 29
11868 R_NDS32_LO12S2_RELA 28
11869 R_NDS32_LO12S2_SP_RELA 71
11870 R_NDS32_LO12S2_DP_RELA 70
11871 R_NDS32_GOT_LO12 46
11872 R_NDS32_GOTOFF_LO12 50
11873 R_NDS32_PLTREL_LO12 65
11874 R_NDS32_PLT_GOTREL_LO12 67
11875 R_NDS32_17IFC_PCREL_RELA 96
11876 R_NDS32_GOT_SUFF 193
11877 R_NDS32_GOTOFF_SUFF 194
11878 R_NDS32_PLT_GOT_SUFF 195
11879 R_NDS32_MULCALL_SUFF 196
11881 else if ((ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_LO12S0_RELA
11882 && ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_LO12S2_RELA
)
11883 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S2_SP_RELA
11884 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S2_DP_RELA
11885 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOT_LO12
11886 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOTOFF_LO12
11887 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_GOTPC_LO12
11888 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_PLTREL_LO12
11889 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_PLT_GOTREL_LO12
11890 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_GOT_SUFF
11891 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_PTR
)
11892 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_17IFC_PCREL_RELA
11893 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_TLS_LE_LO12
11894 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_TLS_LE_ADD
11895 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_TLS_LE_LS
)
11900 insn_len
= seq_len
;
11903 switch (ELF32_R_TYPE (irel
->r_info
))
11905 case R_NDS32_LONGCALL1
:
11906 removed
= nds32_elf_relax_longcall1 (abfd
, sec
, irel
, internal_relocs
,
11907 &insn_len
, contents
, isymbuf
,
11910 case R_NDS32_LONGCALL2
:
11911 removed
= nds32_elf_relax_longcall2 (abfd
, sec
, irel
, internal_relocs
,
11912 &insn_len
, contents
, isymbuf
,
11915 case R_NDS32_LONGCALL3
:
11916 removed
= nds32_elf_relax_longcall3 (abfd
, sec
, irel
, internal_relocs
,
11917 &insn_len
, contents
, isymbuf
,
11920 case R_NDS32_LONGJUMP1
:
11921 removed
= nds32_elf_relax_longjump1 (abfd
, sec
, irel
, internal_relocs
,
11922 &insn_len
, contents
, isymbuf
,
11925 case R_NDS32_LONGJUMP2
:
11926 removed
= nds32_elf_relax_longjump2 (abfd
, sec
, irel
, internal_relocs
,
11927 &insn_len
, contents
, isymbuf
,
11930 case R_NDS32_LONGJUMP3
:
11931 removed
= nds32_elf_relax_longjump3 (abfd
, sec
, irel
, internal_relocs
,
11932 &insn_len
, contents
, isymbuf
,
11935 case R_NDS32_LONGCALL4
:
11936 removed
= nds32_elf_relax_longcall4 (abfd
, sec
, irel
, internal_relocs
,
11937 &insn_len
, contents
, isymbuf
,
11940 case R_NDS32_LONGCALL5
:
11941 removed
= nds32_elf_relax_longcall5 (abfd
, sec
, irel
, internal_relocs
,
11942 &insn_len
, contents
, isymbuf
,
11945 case R_NDS32_LONGCALL6
:
11946 removed
= nds32_elf_relax_longcall6 (abfd
, sec
, irel
, internal_relocs
,
11947 &insn_len
, contents
, isymbuf
,
11950 case R_NDS32_LONGJUMP4
:
11951 removed
= nds32_elf_relax_longjump4 (abfd
, sec
, irel
, internal_relocs
,
11952 &insn_len
, contents
, isymbuf
,
11955 case R_NDS32_LONGJUMP5
:
11956 removed
= nds32_elf_relax_longjump5 (abfd
, sec
, irel
, internal_relocs
,
11957 &insn_len
, &seq_len
, contents
,
11958 isymbuf
, symtab_hdr
);
11960 case R_NDS32_LONGJUMP6
:
11961 removed
= nds32_elf_relax_longjump6 (abfd
, sec
, irel
, internal_relocs
,
11962 &insn_len
, &seq_len
, contents
,
11963 isymbuf
, symtab_hdr
);
11965 case R_NDS32_LONGJUMP7
:
11966 removed
= nds32_elf_relax_longjump7 (abfd
, sec
, irel
, internal_relocs
,
11967 &insn_len
, &seq_len
, contents
,
11968 isymbuf
, symtab_hdr
);
11970 case R_NDS32_LOADSTORE
:
11971 removed
= nds32_elf_relax_loadstore (link_info
, abfd
, sec
, irel
,
11972 internal_relocs
, &insn_len
,
11973 contents
, isymbuf
, symtab_hdr
,
11976 case R_NDS32_LO12S0_RELA
:
11977 case R_NDS32_LO12S1_RELA
:
11978 case R_NDS32_LO12S2_DP_RELA
:
11979 case R_NDS32_LO12S2_SP_RELA
:
11980 case R_NDS32_LO12S2_RELA
:
11981 /* Relax for low part. */
11982 nds32_elf_relax_lo12 (link_info
, abfd
, sec
, irel
, internal_relocs
,
11983 contents
, isymbuf
, symtab_hdr
);
11985 /* It is impossible to delete blank, so just continue. */
11987 case R_NDS32_GOT_LO12
:
11988 case R_NDS32_GOTOFF_LO12
:
11989 case R_NDS32_PLTREL_LO12
:
11990 case R_NDS32_PLT_GOTREL_LO12
:
11991 case R_NDS32_GOTPC_LO12
:
11992 /* Relax for PIC gp-relative low part. */
11993 nds32_elf_relax_piclo12 (link_info
, abfd
, sec
, irel
, contents
,
11994 isymbuf
, symtab_hdr
);
11996 /* It is impossible to delete blank, so just continue. */
11998 case R_NDS32_TLS_LE_LO12
:
11999 /* Relax for LE TLS low part. */
12000 nds32_elf_relax_letlslo12 (link_info
, abfd
, irel
, contents
,
12001 isymbuf
, symtab_hdr
);
12003 /* It is impossible to delete blank, so just continue. */
12005 case R_NDS32_TLS_LE_ADD
:
12006 nds32_elf_relax_letlsadd (link_info
, abfd
, sec
, irel
, internal_relocs
,
12007 contents
, isymbuf
, symtab_hdr
, again
);
12008 /* It is impossible to delete blank, so just continue. */
12010 case R_NDS32_TLS_LE_LS
:
12011 nds32_elf_relax_letlsls (link_info
, abfd
, sec
, irel
, internal_relocs
,
12012 contents
, isymbuf
, symtab_hdr
, again
);
12015 removed
= nds32_elf_relax_ptr (abfd
, sec
, irel
, internal_relocs
,
12016 &insn_len
, &seq_len
, contents
);
12018 case R_NDS32_PLT_GOT_SUFF
:
12019 nds32_elf_relax_pltgot_suff (link_info
, abfd
, sec
, irel
,
12020 internal_relocs
, contents
,
12021 isymbuf
, symtab_hdr
, again
);
12022 /* It is impossible to delete blank, so just continue. */
12024 case R_NDS32_GOT_SUFF
:
12025 nds32_elf_relax_got_suff (link_info
, abfd
, sec
, irel
,
12026 internal_relocs
, contents
,
12027 symtab_hdr
, again
);
12028 /* It is impossible to delete blank, so just continue. */
12030 case R_NDS32_GOTOFF_SUFF
:
12031 nds32_elf_relax_gotoff_suff (link_info
, abfd
, sec
, irel
,
12032 internal_relocs
, contents
,
12033 isymbuf
, symtab_hdr
, again
);
12034 /* It is impossible to delete blank, so just continue. */
12040 if (removed
&& seq_len
- insn_len
> 0)
12042 if (!insert_nds32_elf_blank
12043 (&relax_blank_list
, irel
->r_offset
+ insn_len
,
12044 seq_len
- insn_len
))
12050 calc_nds32_blank_total (relax_blank_list
);
12052 if (table
->relax_fp_as_gp
)
12054 if (!nds32_relax_fp_as_gp (link_info
, abfd
, sec
, internal_relocs
,
12060 if (!nds32_fag_remove_unused_fpbase (abfd
, sec
, internal_relocs
,
12066 nds32_elf_pick_relax (FALSE
, sec
, again
, table
, link_info
);
12070 if (!nds32_relax_adjust_label (abfd
, sec
, internal_relocs
, contents
,
12071 &relax_blank_list
, optimize
, opt_size
))
12075 /* It doesn't matter optimize_for_space_no_align anymore.
12076 If object file is assembled with flag '-Os',
12077 the we don't adjust jump-destination on 4-byte boundary. */
12079 if (relax_blank_list
)
12081 nds32_elf_relax_delete_blanks (abfd
, sec
, relax_blank_list
);
12082 relax_blank_list
= NULL
;
12087 /* Closing the section, so we don't relax it anymore. */
12088 bfd_vma sec_size_align
;
12089 Elf_Internal_Rela
*tmp_rel
;
12091 /* Pad to alignment boundary. Only handle current section alignment. */
12092 sec_size_align
= (sec
->size
+ (~((-1U) << sec
->alignment_power
)))
12093 & ((-1U) << sec
->alignment_power
);
12094 if ((sec_size_align
- sec
->size
) & 0x2)
12096 insn16
= NDS32_NOP16
;
12097 bfd_putb16 (insn16
, contents
+ sec
->size
);
12101 while (sec_size_align
!= sec
->size
)
12103 insn
= NDS32_NOP32
;
12104 bfd_putb32 (insn
, contents
+ sec
->size
);
12108 tmp_rel
= find_relocs_at_address (internal_relocs
, internal_relocs
,
12109 irelend
, R_NDS32_RELAX_ENTRY
);
12110 if (tmp_rel
!= irelend
)
12111 tmp_rel
->r_addend
|= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG
;
12113 clean_nds32_elf_blank ();
12117 if (internal_relocs
!= NULL
12118 && elf_section_data (sec
)->relocs
!= internal_relocs
)
12119 free (internal_relocs
);
12121 if (contents
!= NULL
12122 && elf_section_data (sec
)->this_hdr
.contents
!= contents
)
12125 if (isymbuf
!= NULL
&& symtab_hdr
->contents
!= (bfd_byte
*) isymbuf
)
12135 static struct bfd_elf_special_section
const nds32_elf_special_sections
[] =
12137 {".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
12138 {".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
12143 nds32_elf_output_arch_syms (bfd
*output_bfd ATTRIBUTE_UNUSED
,
12144 struct bfd_link_info
*info
,
12145 void *finfo ATTRIBUTE_UNUSED
,
12146 bfd_boolean (*func
) (void *, const char *,
12147 Elf_Internal_Sym
*,
12149 struct elf_link_hash_entry
*)
12152 FILE *sym_ld_script
= NULL
;
12153 struct elf_nds32_link_hash_table
*table
;
12155 table
= nds32_elf_hash_table (info
);
12156 sym_ld_script
= table
->sym_ld_script
;
12158 if (check_start_export_sym
)
12159 fprintf (sym_ld_script
, "}\n");
12164 static enum elf_reloc_type_class
12165 nds32_elf_reloc_type_class (const struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
12166 const asection
*rel_sec ATTRIBUTE_UNUSED
,
12167 const Elf_Internal_Rela
*rela
)
12169 switch ((int) ELF32_R_TYPE (rela
->r_info
))
12171 case R_NDS32_RELATIVE
:
12172 return reloc_class_relative
;
12173 case R_NDS32_JMP_SLOT
:
12174 return reloc_class_plt
;
12176 return reloc_class_copy
;
12178 return reloc_class_normal
;
12182 /* Put target dependent option into info hash table. */
12184 bfd_elf32_nds32_set_target_option (struct bfd_link_info
*link_info
,
12185 int relax_fp_as_gp
,
12186 int eliminate_gc_relocs
,
12187 FILE * sym_ld_script
, int load_store_relax
,
12188 int target_optimize
, int relax_status
,
12189 int relax_round
, FILE * ex9_export_file
,
12190 FILE * ex9_import_file
,
12191 int update_ex9_table
, int ex9_limit
,
12192 bfd_boolean ex9_loop_aware
,
12193 bfd_boolean ifc_loop_aware
)
12195 struct elf_nds32_link_hash_table
*table
;
12197 table
= nds32_elf_hash_table (link_info
);
12201 table
->relax_fp_as_gp
= relax_fp_as_gp
;
12202 table
->eliminate_gc_relocs
= eliminate_gc_relocs
;
12203 table
->sym_ld_script
= sym_ld_script
;
12204 table
->load_store_relax
= load_store_relax
;
12205 table
->target_optimize
= target_optimize
;
12206 table
->relax_status
= relax_status
;
12207 table
->relax_round
= relax_round
;
12208 table
->ex9_export_file
= ex9_export_file
;
12209 table
->ex9_import_file
= ex9_import_file
;
12210 table
->update_ex9_table
= update_ex9_table
;
12211 table
->ex9_limit
= ex9_limit
;
12212 table
->ex9_loop_aware
= ex9_loop_aware
;
12213 table
->ifc_loop_aware
= ifc_loop_aware
;
12216 /* These functions and data-structures are used for fp-as-gp
12219 #define FAG_THRESHOLD 3 /* At least 3 gp-access. */
12220 /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between
12221 the read-only section and read-write section. */
12222 #define FAG_WINDOW (508 - 32)
12224 /* An nds32_fag represent a gp-relative access.
12225 We find best fp-base by using a sliding window
12226 to find a base address which can cover most gp-access. */
12229 struct nds32_fag
*next
; /* NULL-teminated linked list. */
12230 bfd_vma addr
; /* The address of this fag. */
12231 Elf_Internal_Rela
**relas
; /* The relocations associated with this fag.
12232 It is used for applying FP7U2_FLAG. */
12233 int count
; /* How many times this address is referred.
12234 There should be exactly `count' relocations
12236 int relas_capcity
; /* The buffer size of relas.
12237 We use an array instead of linked-list,
12238 and realloc is used to adjust buffer size. */
12242 nds32_fag_init (struct nds32_fag
*head
)
12244 memset (head
, 0, sizeof (struct nds32_fag
));
12248 nds32_fag_verify (struct nds32_fag
*head
)
12250 struct nds32_fag
*iter
;
12251 struct nds32_fag
*prev
;
12257 if (prev
&& prev
->addr
>= iter
->addr
)
12258 puts ("Bug in fp-as-gp insertion.");
12264 /* Insert a fag in ascending order.
12265 If a fag of the same address already exists,
12266 they are chained by relas array. */
12269 nds32_fag_insert (struct nds32_fag
*head
, bfd_vma addr
,
12270 Elf_Internal_Rela
* rel
)
12272 struct nds32_fag
*iter
;
12273 struct nds32_fag
*new_fag
;
12274 const int INIT_RELAS_CAP
= 4;
12277 iter
->next
&& iter
->next
->addr
<= addr
;
12279 /* Find somewhere to insert. */ ;
12281 /* `iter' will be equal to `head' if the list is empty. */
12282 if (iter
!= head
&& iter
->addr
== addr
)
12284 /* The address exists in the list.
12285 Insert `rel' into relocation list, relas. */
12287 /* Check whether relas is big enough. */
12288 if (iter
->count
>= iter
->relas_capcity
)
12290 iter
->relas_capcity
*= 2;
12291 iter
->relas
= bfd_realloc
12292 (iter
->relas
, iter
->relas_capcity
* sizeof (void *));
12294 iter
->relas
[iter
->count
++] = rel
;
12298 /* This is a new address. Create a fag node for it. */
12299 new_fag
= bfd_malloc (sizeof (struct nds32_fag
));
12300 memset (new_fag
, 0, sizeof (*new_fag
));
12301 new_fag
->addr
= addr
;
12302 new_fag
->count
= 1;
12303 new_fag
->next
= iter
->next
;
12304 new_fag
->relas_capcity
= INIT_RELAS_CAP
;
12305 new_fag
->relas
= (Elf_Internal_Rela
**)
12306 bfd_malloc (new_fag
->relas_capcity
* sizeof (void *));
12307 new_fag
->relas
[0] = rel
;
12308 iter
->next
= new_fag
;
12310 nds32_fag_verify (head
);
12314 nds32_fag_free_list (struct nds32_fag
*head
)
12316 struct nds32_fag
*iter
;
12321 struct nds32_fag
*tmp
= iter
;
12329 /* Find the best fp-base address.
12330 The relocation associated with that address is returned,
12331 so we can track the symbol instead of a fixed address.
12333 When relaxation, the address of an datum may change,
12334 because a text section is shrinked, so the data section
12335 moves forward. If the aligments of text and data section
12336 are different, their distance may change too.
12337 Therefore, tracking a fixed address is not appriate. */
12340 nds32_fag_find_base (struct nds32_fag
*head
, struct nds32_fag
**bestpp
)
12342 struct nds32_fag
*base
; /* First fag in the window. */
12343 struct nds32_fag
*last
; /* First fag outside the window. */
12344 int accu
= 0; /* Usage accumulation. */
12345 struct nds32_fag
*best
; /* Best fag. */
12346 int baccu
= 0; /* Best accumulation. */
12348 /* Use first fag for initial, and find the last fag in the window.
12350 In each iteration, we could simply subtract previous fag
12351 and accumulate following fags which are inside the window,
12352 untill we each the end. */
12354 if (head
->next
== NULL
)
12360 /* Initialize base. */
12364 last
&& last
->addr
< base
->addr
+ FAG_WINDOW
;
12366 accu
+= last
->count
;
12370 /* Record the best base in each iteration. */
12373 accu
-= base
->count
;
12375 /* Account fags in window. */
12376 for (/* Nothing. */;
12377 last
&& last
->addr
< base
->addr
+ FAG_WINDOW
;
12379 accu
+= last
->count
;
12381 /* A better fp-base? */
12394 /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses,
12395 so we can convert it fo fp-relative access later.
12396 `best_fag' is the best fp-base. Only those inside the window
12397 of best_fag is applied the flag. */
12400 nds32_fag_mark_relax (struct bfd_link_info
*link_info
,
12401 bfd
*abfd
, struct nds32_fag
*best_fag
,
12402 Elf_Internal_Rela
*internal_relocs
,
12403 Elf_Internal_Rela
*irelend
)
12405 struct nds32_fag
*ifag
;
12406 bfd_vma best_fpbase
, gp
;
12409 output_bfd
= abfd
->sections
->output_section
->owner
;
12410 nds32_elf_final_sda_base (output_bfd
, link_info
, &gp
, FALSE
);
12411 best_fpbase
= best_fag
->addr
;
12413 if (best_fpbase
> gp
+ sdata_range
[1][1]
12414 || best_fpbase
< gp
- sdata_range
[1][0])
12417 /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag,
12418 so we know they can be converted to lwi37.fp. */
12419 for (ifag
= best_fag
;
12420 ifag
&& ifag
->addr
< best_fpbase
+ FAG_WINDOW
; ifag
= ifag
->next
)
12424 for (i
= 0; i
< ifag
->count
; i
++)
12426 Elf_Internal_Rela
*insn16_rel
;
12427 Elf_Internal_Rela
*fag_rel
;
12429 fag_rel
= ifag
->relas
[i
];
12431 /* Only if this is within the WINDOWS, FP7U2_FLAG
12434 insn16_rel
= find_relocs_at_address
12435 (fag_rel
, internal_relocs
, irelend
, R_NDS32_INSN16
);
12437 if (insn16_rel
!= irelend
)
12438 insn16_rel
->r_addend
= R_NDS32_INSN16_FP7U2_FLAG
;
12444 /* Reset INSN16 to clean fp as gp. */
12447 nds32_fag_unmark_relax (struct nds32_fag
*fag
,
12448 Elf_Internal_Rela
*internal_relocs
,
12449 Elf_Internal_Rela
*irelend
)
12451 struct nds32_fag
*ifag
;
12453 Elf_Internal_Rela
*insn16_rel
;
12454 Elf_Internal_Rela
*fag_rel
;
12456 for (ifag
= fag
; ifag
; ifag
= ifag
->next
)
12458 for (i
= 0; i
< ifag
->count
; i
++)
12460 fag_rel
= ifag
->relas
[i
];
12462 /* Restore the INSN16 relocation. */
12463 insn16_rel
= find_relocs_at_address
12464 (fag_rel
, internal_relocs
, irelend
, R_NDS32_INSN16
);
12466 if (insn16_rel
!= irelend
)
12467 insn16_rel
->r_addend
&= ~R_NDS32_INSN16_FP7U2_FLAG
;
12472 /* This is the main function of fp-as-gp optimization.
12473 It should be called by relax_section. */
12476 nds32_relax_fp_as_gp (struct bfd_link_info
*link_info
,
12477 bfd
*abfd
, asection
*sec
,
12478 Elf_Internal_Rela
*internal_relocs
,
12479 Elf_Internal_Rela
*irelend
,
12480 Elf_Internal_Sym
*isymbuf
)
12482 Elf_Internal_Rela
*begin_rel
= NULL
;
12483 Elf_Internal_Rela
*irel
;
12484 struct nds32_fag fag_head
;
12485 Elf_Internal_Shdr
*symtab_hdr
;
12486 bfd_byte
*contents
;
12487 bfd_boolean ifc_inside
= FALSE
;
12489 /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */
12491 /* Per-function fp-base selection.
12492 1. Create a list for all the gp-relative access.
12493 2. Base on those gp-relative address,
12494 find a fp-base which can cover most access.
12495 3. Use the fp-base for fp-as-gp relaxation.
12497 NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times),
12499 1. delete the `la $fp, _FP_BASE_' instruction and
12500 2. not convert lwi.gp to lwi37.fp.
12502 To delete the _FP_BASE_ instruction, we simply apply
12503 R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it.
12505 To suppress the conversion, we simply NOT to apply
12506 R_NDS32_INSN16_FP7U2_FLAG flag. */
12508 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
12510 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
)
12511 || !nds32_get_local_syms (abfd
, sec
, &isymbuf
))
12514 /* Check whether it is worth for fp-as-gp optimization,
12515 i.e., at least 3 gp-load.
12517 Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT
12518 apply this optimization. */
12520 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
12522 /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region.
12523 One we enter the begin of the region, we track all the LW/ST
12524 instructions, so when we leave the region, we try to find
12525 the best fp-base address for those LW/ST instructions. */
12527 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
12528 && (irel
->r_addend
& R_NDS32_RELAX_REGION_OMIT_FP_FLAG
))
12530 /* Begin of the region. */
12532 /* xgettext:c-format */
12533 _bfd_error_handler (_("%pB: nested OMIT_FP in %pA"), abfd
, sec
);
12536 nds32_fag_init (&fag_head
);
12537 ifc_inside
= FALSE
;
12539 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_END
12540 && (irel
->r_addend
& R_NDS32_RELAX_REGION_OMIT_FP_FLAG
))
12543 struct nds32_fag
*best_fag
, *tmp_fag
;
12546 /* End of the region.
12547 Check whether it is worth to do fp-as-gp. */
12549 if (begin_rel
== NULL
)
12551 /* xgettext:c-format */
12552 _bfd_error_handler (_("%pB: unmatched OMIT_FP in %pA"),
12557 accu
= nds32_fag_find_base (&fag_head
, &best_fag
);
12559 /* Clean FP7U2_FLAG because they may set ever. */
12560 tmp_fag
= fag_head
.next
;
12561 nds32_fag_unmark_relax (tmp_fag
, internal_relocs
, irelend
);
12563 /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */
12564 if (accu
< FAG_THRESHOLD
12565 || !nds32_fag_mark_relax (link_info
, abfd
, best_fag
,
12566 internal_relocs
, irelend
))
12568 /* Not worth to do fp-as-gp. */
12569 begin_rel
->r_addend
|= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG
;
12570 begin_rel
->r_addend
&= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG
;
12571 irel
->r_addend
|= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG
;
12572 irel
->r_addend
&= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG
;
12573 nds32_fag_free_list (&fag_head
);
12578 /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler,
12579 so we use it to record the distance to the reloction of best
12581 dist
= best_fag
->relas
[0] - begin_rel
;
12582 BFD_ASSERT (dist
> 0 && dist
< 0xffffff);
12583 /* Use high 16 bits of addend to record the _FP_BASE_ matched
12584 relocation. And get the base value when relocating. */
12585 begin_rel
->r_addend
&= (0x1 << 16) - 1;
12586 begin_rel
->r_addend
|= dist
<< 16;
12588 nds32_fag_free_list (&fag_head
);
12592 if (begin_rel
== NULL
|| ifc_inside
)
12593 /* Skip if we are not in the region of fp-as-gp. */
12596 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_SDA15S2_RELA
12597 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_SDA17S2_RELA
)
12602 /* A gp-relative access is found. Insert it to the fag-list. */
12604 /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */
12605 insn
= bfd_getb32 (contents
+ irel
->r_offset
);
12606 if (!N32_IS_RT3 (insn
))
12609 addr
= calculate_memory_address (abfd
, irel
, isymbuf
, symtab_hdr
);
12610 nds32_fag_insert (&fag_head
, addr
, irel
);
12612 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_SDA_FP7U2_RELA
)
12616 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_17IFC_PCREL_RELA
12617 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_10IFCU_PCREL_RELA
)
12619 /* Suppress fp as gp when encounter ifc. */
12627 /* Remove unused `la $fp, _FD_BASE_' instruction. */
12630 nds32_fag_remove_unused_fpbase (bfd
*abfd
, asection
*sec
,
12631 Elf_Internal_Rela
*internal_relocs
,
12632 Elf_Internal_Rela
*irelend
)
12634 Elf_Internal_Rela
*irel
;
12635 Elf_Internal_Shdr
*symtab_hdr
;
12636 bfd_byte
*contents
= NULL
;
12637 nds32_elf_blank_t
*relax_blank_list
= NULL
;
12638 bfd_boolean result
= TRUE
;
12639 bfd_boolean unused_region
= FALSE
;
12642 NOTE: Disable fp-as-gp if we encounter ifcall relocations.
12643 * R_NDS32_17IFC_PCREL_RELA
12644 * R_NDS32_10IFCU_PCREL_RELA
12649 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
12650 nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
);
12652 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
12654 /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP
12655 we marked to in previous pass.
12656 DO NOT scan relocations again, since we've alreadly decided it
12657 and set the flag. */
12658 const char *syname
;
12662 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
12663 && (irel
->r_addend
& R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG
))
12664 unused_region
= TRUE
;
12665 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_END
12666 && (irel
->r_addend
& R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG
))
12667 unused_region
= FALSE
;
12669 /* We're not in the region. */
12670 if (!unused_region
)
12673 /* _FP_BASE_ must be a GLOBAL symbol. */
12674 syndx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
12675 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
12678 /* The symbol name must be _FP_BASE_. */
12679 syname
= elf_sym_hashes (abfd
)[syndx
]->root
.root
.string
;
12680 if (strcmp (syname
, FP_BASE_NAME
) != 0)
12683 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_SDA19S0_RELA
)
12685 /* addi.gp $fp, -256 */
12686 insn
= bfd_getb32 (contents
+ irel
->r_offset
);
12687 if (insn
!= INSN_ADDIGP_TO_FP
)
12690 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_SDA15S0_RELA
)
12692 /* addi $fp, $gp, -256 */
12693 insn
= bfd_getb32 (contents
+ irel
->r_offset
);
12694 if (insn
!= INSN_ADDI_GP_TO_FP
)
12697 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_20_RELA
)
12699 /* movi $fp, FP_BASE */
12700 insn
= bfd_getb32 (contents
+ irel
->r_offset
);
12701 if (insn
!= INSN_MOVI_TO_FP
)
12707 /* We got here because a FP_BASE instruction is found. */
12708 if (!insert_nds32_elf_blank_recalc_total
12709 (&relax_blank_list
, irel
->r_offset
, 4))
12714 if (relax_blank_list
)
12716 nds32_elf_relax_delete_blanks (abfd
, sec
, relax_blank_list
);
12717 relax_blank_list
= NULL
;
12726 /* This is a version of bfd_generic_get_relocated_section_contents.
12727 We need this variety because relaxation will modify the dwarf
12728 infomation. When there is undefined symbol reference error mesage,
12729 linker need to dump line number where the symbol be used. However
12730 the address is be relaxed, it can not get the original dwarf contents.
12731 The variety only modify function call for reading in the section. */
12734 nds32_elf_get_relocated_section_contents (bfd
*abfd
,
12735 struct bfd_link_info
*link_info
,
12736 struct bfd_link_order
*link_order
,
12738 bfd_boolean relocatable
,
12741 bfd
*input_bfd
= link_order
->u
.indirect
.section
->owner
;
12742 asection
*input_section
= link_order
->u
.indirect
.section
;
12744 arelent
**reloc_vector
;
12747 reloc_size
= bfd_get_reloc_upper_bound (input_bfd
, input_section
);
12748 if (reloc_size
< 0)
12751 /* Read in the section. */
12752 if (!nds32_get_section_contents (input_bfd
, input_section
, &data
, FALSE
))
12755 if (reloc_size
== 0)
12758 reloc_vector
= (arelent
**) bfd_malloc (reloc_size
);
12759 if (reloc_vector
== NULL
)
12762 reloc_count
= bfd_canonicalize_reloc (input_bfd
, input_section
,
12763 reloc_vector
, symbols
);
12764 if (reloc_count
< 0)
12767 if (reloc_count
> 0)
12770 for (parent
= reloc_vector
; *parent
!= NULL
; parent
++)
12772 char *error_message
= NULL
;
12774 bfd_reloc_status_type r
;
12776 symbol
= *(*parent
)->sym_ptr_ptr
;
12777 if (symbol
->section
&& discarded_section (symbol
->section
))
12780 static reloc_howto_type none_howto
12781 = HOWTO (0, 0, 0, 0, FALSE
, 0, complain_overflow_dont
, NULL
,
12782 "unused", FALSE
, 0, 0, FALSE
);
12784 p
= data
+ (*parent
)->address
* bfd_octets_per_byte (input_bfd
);
12785 _bfd_clear_contents ((*parent
)->howto
, input_bfd
, input_section
,
12787 (*parent
)->sym_ptr_ptr
= bfd_abs_section_ptr
->symbol_ptr_ptr
;
12788 (*parent
)->addend
= 0;
12789 (*parent
)->howto
= &none_howto
;
12793 r
= bfd_perform_relocation (input_bfd
, *parent
, data
,
12795 relocatable
? abfd
: NULL
,
12800 asection
*os
= input_section
->output_section
;
12802 /* A partial link, so keep the relocs. */
12803 os
->orelocation
[os
->reloc_count
] = *parent
;
12807 if (r
!= bfd_reloc_ok
)
12811 case bfd_reloc_undefined
:
12812 (*link_info
->callbacks
->undefined_symbol
)
12813 (link_info
, bfd_asymbol_name (*(*parent
)->sym_ptr_ptr
),
12814 input_bfd
, input_section
, (*parent
)->address
, TRUE
);
12816 case bfd_reloc_dangerous
:
12817 BFD_ASSERT (error_message
!= NULL
);
12818 (*link_info
->callbacks
->reloc_dangerous
)
12819 (link_info
, error_message
,
12820 input_bfd
, input_section
, (*parent
)->address
);
12822 case bfd_reloc_overflow
:
12823 (*link_info
->callbacks
->reloc_overflow
)
12825 bfd_asymbol_name (*(*parent
)->sym_ptr_ptr
),
12826 (*parent
)->howto
->name
, (*parent
)->addend
,
12827 input_bfd
, input_section
, (*parent
)->address
);
12829 case bfd_reloc_outofrange
:
12831 This error can result when processing some partially
12832 complete binaries. Do not abort, but issue an error
12833 message instead. */
12834 link_info
->callbacks
->einfo
12835 /* xgettext:c-format */
12836 (_("%X%P: %pB(%pA): relocation \"%pR\" goes out of range\n"),
12837 abfd
, input_section
, * parent
);
12848 free (reloc_vector
);
12852 free (reloc_vector
);
12856 /* Link-time IFC relaxation.
12857 In this optimization, we chains jump instructions
12858 of the same destination with ifcall. */
12861 /* List to save jal and j relocation. */
12862 struct elf_nds32_ifc_symbol_entry
12865 struct elf_link_hash_entry
*h
;
12866 struct elf_nds32_ifc_irel_list
*irel_head
;
12867 unsigned long insn
;
12869 int enable
; /* Apply ifc. */
12870 int ex9_enable
; /* Apply ifc after ex9. */
12871 struct elf_nds32_ifc_symbol_entry
*next
;
12874 struct elf_nds32_ifc_irel_list
12876 Elf_Internal_Rela
*irel
;
12879 /* If this is set, then it is the last instruction for
12880 ifc-chain, so it must be keep for the actual branching. */
12882 struct elf_nds32_ifc_irel_list
*next
;
12885 static struct elf_nds32_ifc_symbol_entry
*ifc_symbol_head
= NULL
;
12887 /* Insert symbol of jal and j for ifc. */
12890 nds32_elf_ifc_insert_symbol (asection
*sec
,
12891 struct elf_link_hash_entry
*h
,
12892 Elf_Internal_Rela
*irel
,
12893 unsigned long insn
)
12895 struct elf_nds32_ifc_symbol_entry
*ptr
= ifc_symbol_head
;
12897 /* Check there is target of existing entry the same as the new one. */
12898 while (ptr
!= NULL
)
12900 if (((h
== NULL
&& ptr
->sec
== sec
12901 && ELF32_R_SYM (ptr
->irel_head
->irel
->r_info
) == ELF32_R_SYM (irel
->r_info
)
12902 && ptr
->irel_head
->irel
->r_addend
== irel
->r_addend
)
12905 && ptr
->insn
== insn
)
12907 /* The same target exist, so insert into list. */
12908 struct elf_nds32_ifc_irel_list
*irel_list
= ptr
->irel_head
;
12910 while (irel_list
->next
!= NULL
)
12911 irel_list
= irel_list
->next
;
12912 irel_list
->next
= bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list
));
12913 irel_list
= irel_list
->next
;
12914 irel_list
->irel
= irel
;
12915 irel_list
->keep
= 1;
12918 irel_list
->sec
= NULL
;
12920 irel_list
->sec
= sec
;
12921 irel_list
->next
= NULL
;
12924 if (ptr
->next
== NULL
)
12929 /* There is no same target entry, so build a new one. */
12930 if (ifc_symbol_head
== NULL
)
12932 ifc_symbol_head
= bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry
));
12933 ptr
= ifc_symbol_head
;
12937 ptr
->next
= bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry
));
12942 ptr
->irel_head
= bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list
));
12943 ptr
->irel_head
->irel
= irel
;
12945 ptr
->irel_head
->keep
= 1;
12949 /* Local symbols. */
12951 ptr
->irel_head
->sec
= NULL
;
12955 /* Global symbol. */
12957 ptr
->irel_head
->sec
= sec
;
12960 ptr
->irel_head
->next
= NULL
;
12963 ptr
->ex9_enable
= 0;
12967 /* Gather all jal and j instructions. */
12970 nds32_elf_ifc_calc (struct bfd_link_info
*info
,
12971 bfd
*abfd
, asection
*sec
)
12973 Elf_Internal_Rela
*internal_relocs
;
12974 Elf_Internal_Rela
*irelend
;
12975 Elf_Internal_Rela
*irel
;
12976 Elf_Internal_Shdr
*symtab_hdr
;
12977 bfd_byte
*contents
= NULL
;
12978 uint32_t insn
, insn_with_reg
;
12979 unsigned long r_symndx
;
12980 struct elf_link_hash_entry
*h
;
12981 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (abfd
);
12982 struct elf_nds32_link_hash_table
*table
;
12983 bfd_boolean ifc_loop_aware
;
12985 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
12986 TRUE
/* keep_memory */);
12987 irelend
= internal_relocs
+ sec
->reloc_count
;
12988 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
12990 /* Check if the object enable ifc. */
12991 irel
= find_relocs_at_address (internal_relocs
, internal_relocs
, irelend
,
12992 R_NDS32_RELAX_ENTRY
);
12996 || ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_ENTRY
12997 || (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_ENTRY
12998 && !(irel
->r_addend
& R_NDS32_RELAX_ENTRY_IFC_FLAG
)))
13001 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
))
13004 table
= nds32_elf_hash_table (info
);
13005 ifc_loop_aware
= table
->ifc_loop_aware
;
13006 while (irel
!= NULL
&& irel
< irelend
)
13008 /* Traverse all relocation and gather all of them to build the list. */
13010 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
)
13012 if (ifc_loop_aware
== 1
13013 && (irel
->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
) != 0)
13015 /* Check the region if loop or not. If it is true and
13016 ifc-loop-aware is true, ignore the region till region end. */
13017 while (irel
!= NULL
13019 && (ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_REGION_END
13020 || (irel
->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
) != 0))
13025 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_25_PCREL_RELA
)
13027 insn
= bfd_getb32 (contents
+ irel
->r_offset
);
13028 nds32_elf_get_insn_with_reg (irel
, insn
, &insn_with_reg
);
13029 r_symndx
= ELF32_R_SYM (irel
->r_info
);
13030 if (r_symndx
< symtab_hdr
->sh_info
)
13032 /* Local symbol. */
13033 nds32_elf_ifc_insert_symbol (sec
, NULL
, irel
, insn_with_reg
);
13037 /* External symbol. */
13038 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
13039 nds32_elf_ifc_insert_symbol (sec
, h
, irel
, insn_with_reg
);
13047 /* Determine whether j and jal should be substituted. */
13050 nds32_elf_ifc_filter (struct bfd_link_info
*info
)
13052 struct elf_nds32_ifc_symbol_entry
*ptr
= ifc_symbol_head
;
13053 struct elf_nds32_ifc_irel_list
*irel_ptr
= NULL
;
13054 struct elf_nds32_ifc_irel_list
*irel_keeper
= NULL
;
13055 struct elf_nds32_link_hash_table
*table
;
13056 int target_optimize
;
13059 table
= nds32_elf_hash_table (info
);
13060 target_optimize
= table
->target_optimize
;
13063 irel_ptr
= ptr
->irel_head
;
13064 if (ptr
->h
== NULL
)
13066 /* Local symbol. */
13067 irel_keeper
= irel_ptr
;
13068 while (irel_ptr
&& irel_ptr
->next
)
13070 /* Check there is jump target can be used. */
13071 if ((irel_ptr
->next
->irel
->r_offset
13072 - irel_keeper
->irel
->r_offset
) > 1022)
13073 irel_keeper
= irel_ptr
->next
;
13077 irel_ptr
->keep
= 0;
13079 irel_ptr
= irel_ptr
->next
;
13084 /* Global symbol. */
13085 /* We have to get the absolute address and decide
13086 whether to keep it or not. */
13089 address
= (irel_ptr
->irel
->r_offset
13090 + irel_ptr
->sec
->output_section
->vma
13091 + irel_ptr
->sec
->output_offset
);
13092 irel_ptr
->addr
= address
;
13093 irel_ptr
= irel_ptr
->next
;
13096 irel_ptr
= ptr
->irel_head
;
13099 /* Sort by address. */
13100 struct elf_nds32_ifc_irel_list
*irel_dest
= irel_ptr
;
13101 struct elf_nds32_ifc_irel_list
*irel_temp
= irel_ptr
;
13102 struct elf_nds32_ifc_irel_list
*irel_ptr_prev
= NULL
;
13103 struct elf_nds32_ifc_irel_list
*irel_dest_prev
= NULL
;
13105 /* Get the smallest one. */
13106 while (irel_temp
->next
)
13108 if (irel_temp
->next
->addr
< irel_dest
->addr
)
13110 irel_dest_prev
= irel_temp
;
13111 irel_dest
= irel_temp
->next
;
13113 irel_temp
= irel_temp
->next
;
13116 if (irel_dest
!= irel_ptr
)
13119 irel_ptr_prev
->next
= irel_dest
;
13120 if (irel_dest_prev
)
13121 irel_dest_prev
->next
= irel_ptr
;
13122 irel_temp
= irel_ptr
->next
;
13123 irel_ptr
->next
= irel_dest
->next
;
13124 irel_dest
->next
= irel_temp
;
13126 irel_ptr_prev
= irel_ptr
;
13127 irel_ptr
= irel_ptr
->next
;
13130 irel_ptr
= ptr
->irel_head
;
13131 irel_keeper
= irel_ptr
;
13132 while (irel_ptr
&& irel_ptr
->next
)
13134 if ((irel_ptr
->next
->addr
- irel_keeper
->addr
) > 1022)
13135 irel_keeper
= irel_ptr
->next
;
13139 irel_ptr
->keep
= 0;
13141 irel_ptr
= irel_ptr
->next
;
13145 /* Ex9 enable. Reserve it for ex9. */
13146 if ((target_optimize
& NDS32_RELAX_EX9_ON
)
13147 && ptr
->irel_head
!= irel_keeper
)
13153 /* Determine whether j and jal should be substituted after ex9 done. */
13156 nds32_elf_ifc_filter_after_ex9 (void)
13158 struct elf_nds32_ifc_symbol_entry
*ptr
= ifc_symbol_head
;
13159 struct elf_nds32_ifc_irel_list
*irel_ptr
= NULL
;
13163 if (ptr
->enable
== 0)
13165 /* Check whether ifc is applied or not. */
13166 irel_ptr
= ptr
->irel_head
;
13167 ptr
->ex9_enable
= 1;
13170 if (ELF32_R_TYPE (irel_ptr
->irel
->r_info
) == R_NDS32_TRAN
)
13173 ptr
->ex9_enable
= 0;
13176 irel_ptr
= irel_ptr
->next
;
13183 /* Wrapper to do ifc relaxation. */
13186 nds32_elf_ifc_finish (struct bfd_link_info
*info
)
13189 struct elf_nds32_link_hash_table
*table
;
13191 table
= nds32_elf_hash_table (info
);
13192 relax_status
= table
->relax_status
;
13194 if (!(relax_status
& NDS32_RELAX_JUMP_IFC_DONE
))
13195 nds32_elf_ifc_filter (info
);
13197 nds32_elf_ifc_filter_after_ex9 ();
13199 if (!nds32_elf_ifc_replace (info
))
13203 table
->relax_status
|= NDS32_RELAX_JUMP_IFC_DONE
;
13207 /* Traverse the result of ifc filter and replace it with ifcall9. */
13210 nds32_elf_ifc_replace (struct bfd_link_info
*info
)
13212 struct elf_nds32_ifc_symbol_entry
*ptr
= ifc_symbol_head
;
13213 struct elf_nds32_ifc_irel_list
*irel_ptr
= NULL
;
13214 nds32_elf_blank_t
*relax_blank_list
= NULL
;
13215 bfd_byte
*contents
= NULL
;
13216 Elf_Internal_Rela
*internal_relocs
;
13217 Elf_Internal_Rela
*irel
;
13218 Elf_Internal_Rela
*irelend
;
13219 unsigned short insn16
= INSN_IFCALL9
;
13220 struct elf_nds32_link_hash_table
*table
;
13223 table
= nds32_elf_hash_table (info
);
13224 relax_status
= table
->relax_status
;
13228 /* Traverse the ifc gather list, and replace the
13229 filter entries by ifcall9. */
13230 if ((!(relax_status
& NDS32_RELAX_JUMP_IFC_DONE
) && ptr
->enable
== 1)
13231 || ((relax_status
& NDS32_RELAX_JUMP_IFC_DONE
)
13232 && ptr
->ex9_enable
== 1))
13234 irel_ptr
= ptr
->irel_head
;
13235 if (ptr
->h
== NULL
)
13237 /* Local symbol. */
13238 internal_relocs
= _bfd_elf_link_read_relocs
13239 (ptr
->sec
->owner
, ptr
->sec
, NULL
, NULL
, TRUE
/* keep_memory */);
13240 irelend
= internal_relocs
+ ptr
->sec
->reloc_count
;
13242 if (!nds32_get_section_contents (ptr
->sec
->owner
, ptr
->sec
,
13248 if (irel_ptr
->keep
== 0 && irel_ptr
->next
)
13250 /* The one can be replaced. We have to check whether
13251 there is any alignment point in the region. */
13252 irel
= irel_ptr
->irel
;
13253 while (((irel_ptr
->next
->keep
== 0
13254 && irel
< irel_ptr
->next
->irel
)
13255 || (irel_ptr
->next
->keep
== 1 && irel
< irelend
))
13256 && !(ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
13257 && (irel
->r_addend
& 0x1f) == 2))
13259 if (irel
>= irelend
13260 || !(ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
13261 && (irel
->r_addend
& 0x1f) == 2
13262 && ((irel
->r_offset
- get_nds32_elf_blank_total
13263 (&relax_blank_list
, irel
->r_offset
, 1))
13266 /* Replace by ifcall9. */
13267 bfd_putb16 (insn16
, contents
+ irel_ptr
->irel
->r_offset
);
13268 if (!insert_nds32_elf_blank_recalc_total
13269 (&relax_blank_list
, irel_ptr
->irel
->r_offset
+ 2, 2))
13271 irel_ptr
->irel
->r_info
=
13272 ELF32_R_INFO (ELF32_R_SYM (irel_ptr
->irel
->r_info
),
13273 R_NDS32_10IFCU_PCREL_RELA
);
13276 irel_ptr
= irel_ptr
->next
;
13279 /* Delete the redundant code. */
13280 if (relax_blank_list
)
13282 nds32_elf_relax_delete_blanks (ptr
->sec
->owner
, ptr
->sec
,
13284 relax_blank_list
= NULL
;
13289 /* Global symbol. */
13292 if (irel_ptr
->keep
== 0 && irel_ptr
->next
)
13294 /* The one can be replaced, and we have to check
13295 whether there is any alignment point in the region. */
13296 internal_relocs
= _bfd_elf_link_read_relocs
13297 (irel_ptr
->sec
->owner
, irel_ptr
->sec
, NULL
, NULL
,
13298 TRUE
/* keep_memory */);
13299 irelend
= internal_relocs
+ irel_ptr
->sec
->reloc_count
;
13300 if (!nds32_get_section_contents (irel_ptr
->sec
->owner
,
13301 irel_ptr
->sec
, &contents
,
13305 irel
= irel_ptr
->irel
;
13306 while (((irel_ptr
->sec
== irel_ptr
->next
->sec
13307 && irel_ptr
->next
->keep
== 0
13308 && irel
< irel_ptr
->next
->irel
)
13309 || ((irel_ptr
->sec
!= irel_ptr
->next
->sec
13310 || irel_ptr
->next
->keep
== 1)
13311 && irel
< irelend
))
13312 && !(ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
13313 && (irel
->r_addend
& 0x1f) == 2))
13315 if (irel
>= irelend
13316 || !(ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LABEL
13317 && (irel
->r_addend
& 0x1f) == 2
13318 && ((irel
->r_offset
13319 - get_nds32_elf_blank_total (&relax_blank_list
,
13320 irel
->r_offset
, 1)) & 0x02) == 0))
13322 /* Replace by ifcall9. */
13323 bfd_putb16 (insn16
, contents
+ irel_ptr
->irel
->r_offset
);
13324 if (!insert_nds32_elf_blank_recalc_total
13325 (&relax_blank_list
, irel_ptr
->irel
->r_offset
+ 2, 2))
13328 /* Delete the redundant code, and clear the relocation. */
13329 nds32_elf_relax_delete_blanks (irel_ptr
->sec
->owner
,
13332 irel_ptr
->irel
->r_info
=
13333 ELF32_R_INFO (ELF32_R_SYM (irel_ptr
->irel
->r_info
),
13334 R_NDS32_10IFCU_PCREL_RELA
);
13335 relax_blank_list
= NULL
;
13339 irel_ptr
= irel_ptr
->next
;
13349 /* Relocate ifcall. */
13352 nds32_elf_ifc_reloc (void)
13354 struct elf_nds32_ifc_symbol_entry
*ptr
= ifc_symbol_head
;
13355 struct elf_nds32_ifc_irel_list
*irel_ptr
= NULL
;
13356 struct elf_nds32_ifc_irel_list
*irel_keeper
= NULL
;
13357 bfd_vma relocation
, address
;
13358 unsigned short insn16
;
13359 bfd_byte
*contents
= NULL
;
13360 static bfd_boolean done
= FALSE
;
13369 /* Check the entry is enable ifcall. */
13370 if (ptr
->enable
== 1 || ptr
->ex9_enable
== 1)
13372 /* Get the reserve jump. */
13373 irel_ptr
= ptr
->irel_head
;
13376 if (irel_ptr
->keep
== 1)
13378 irel_keeper
= irel_ptr
;
13381 irel_ptr
= irel_ptr
->next
;
13384 irel_ptr
= ptr
->irel_head
;
13385 if (ptr
->h
== NULL
)
13387 /* Local symbol. */
13388 if (!nds32_get_section_contents (ptr
->sec
->owner
, ptr
->sec
,
13394 if (irel_ptr
->keep
== 0
13395 && ELF32_R_TYPE (irel_ptr
->irel
->r_info
) == R_NDS32_10IFCU_PCREL_RELA
)
13397 relocation
= irel_keeper
->irel
->r_offset
;
13398 relocation
= relocation
- irel_ptr
->irel
->r_offset
;
13399 while (irel_keeper
&& relocation
> 1022)
13401 irel_keeper
= irel_keeper
->next
;
13402 if (irel_keeper
&& irel_keeper
->keep
== 1)
13404 relocation
= irel_keeper
->irel
->r_offset
;
13405 relocation
= relocation
- irel_ptr
->irel
->r_offset
;
13408 if (relocation
> 1022)
13410 /* Double check. */
13411 irel_keeper
= ptr
->irel_head
;
13412 while (irel_keeper
)
13414 if (irel_keeper
->keep
== 1)
13416 relocation
= irel_keeper
->irel
->r_offset
;
13417 relocation
= relocation
- irel_ptr
->irel
->r_offset
;
13419 if (relocation
<= 1022)
13421 irel_keeper
= irel_keeper
->next
;
13426 irel_ptr
->irel
->r_info
=
13427 ELF32_R_INFO (ELF32_R_SYM (irel_ptr
->irel
->r_info
),
13429 insn16
= INSN_IFCALL9
| (relocation
>> 1);
13430 bfd_putb16 (insn16
, contents
+ irel_ptr
->irel
->r_offset
);
13432 irel_ptr
= irel_ptr
->next
;
13437 /* Global symbol. */
13440 if (irel_ptr
->keep
== 0
13441 && ELF32_R_TYPE (irel_ptr
->irel
->r_info
) == R_NDS32_10IFCU_PCREL_RELA
)
13443 /* Get the distance between ifcall and jump. */
13444 relocation
= (irel_keeper
->irel
->r_offset
13445 + irel_keeper
->sec
->output_section
->vma
13446 + irel_keeper
->sec
->output_offset
);
13447 address
= (irel_ptr
->irel
->r_offset
13448 + irel_ptr
->sec
->output_section
->vma
13449 + irel_ptr
->sec
->output_offset
);
13450 relocation
= relocation
- address
;
13452 /* The distance is over ragne, find callee again. */
13453 while (irel_keeper
&& relocation
> 1022)
13455 irel_keeper
= irel_keeper
->next
;
13456 if (irel_keeper
&& irel_keeper
->keep
==1)
13458 relocation
= (irel_keeper
->irel
->r_offset
13459 + irel_keeper
->sec
->output_section
->vma
13460 + irel_keeper
->sec
->output_offset
);
13461 relocation
= relocation
- address
;
13465 if (relocation
> 1022)
13467 /* Double check. */
13468 irel_keeper
= ptr
->irel_head
;
13469 while (irel_keeper
)
13471 if (irel_keeper
->keep
== 1)
13474 relocation
= (irel_keeper
->irel
->r_offset
13475 + irel_keeper
->sec
->output_section
->vma
13476 + irel_keeper
->sec
->output_offset
);
13477 relocation
= relocation
- address
;
13479 if (relocation
<= 1022)
13481 irel_keeper
= irel_keeper
->next
;
13486 if (!nds32_get_section_contents
13487 (irel_ptr
->sec
->owner
, irel_ptr
->sec
, &contents
, TRUE
))
13489 insn16
= INSN_IFCALL9
| (relocation
>> 1);
13490 bfd_putb16 (insn16
, contents
+ irel_ptr
->irel
->r_offset
);
13491 irel_ptr
->irel
->r_info
=
13492 ELF32_R_INFO (ELF32_R_SYM (irel_ptr
->irel
->r_info
),
13495 irel_ptr
=irel_ptr
->next
;
13505 /* End of IFC relaxation. */
13507 /* EX9 Instruction Table Relaxation. */
13509 /* Global hash list. */
13510 struct elf_link_hash_entry_list
13512 struct elf_link_hash_entry
*h
;
13513 struct elf_link_hash_entry_list
*next
;
13516 /* Save different destination but same insn. */
13517 struct elf_link_hash_entry_mul_list
13519 /* Global symbol times. */
13521 /* Save relocation for each global symbol but useful?? */
13522 Elf_Internal_Rela
*irel
;
13523 /* For sethi, two sethi may have the same high-part but different low-parts. */
13524 Elf_Internal_Rela rel_backup
;
13525 struct elf_link_hash_entry_list
*h_list
;
13526 struct elf_link_hash_entry_mul_list
*next
;
13529 /* Instruction hash table. */
13530 struct elf_nds32_code_hash_entry
13532 struct bfd_hash_entry root
;
13534 /* For insn that can use relocation or constant ex: sethi. */
13537 struct elf_link_hash_entry_mul_list
*m_list
;
13538 /* Using r_addend. */
13539 Elf_Internal_Rela
*irel
;
13540 /* Using r_info. */
13541 Elf_Internal_Rela rel_backup
;
13544 /* Instruction count list. */
13545 struct elf_nds32_insn_times_entry
13547 const char *string
;
13551 struct elf_link_hash_entry_mul_list
*m_list
;
13552 Elf_Internal_Rela
*irel
;
13553 Elf_Internal_Rela rel_backup
;
13554 struct elf_nds32_insn_times_entry
*next
;
13557 /* J and JAL symbol list. */
13558 struct elf_nds32_symbol_entry
13561 unsigned long insn
;
13562 struct elf_nds32_symbol_entry
*next
;
13565 /* Relocation list. */
13566 struct elf_nds32_irel_entry
13568 Elf_Internal_Rela
*irel
;
13569 struct elf_nds32_irel_entry
*next
;
13572 /* ex9.it insn need to be fixed. */
13573 struct elf_nds32_ex9_refix
13575 Elf_Internal_Rela
*irel
;
13577 struct elf_link_hash_entry
*h
;
13579 struct elf_nds32_ex9_refix
*next
;
13582 static struct bfd_hash_table ex9_code_table
;
13583 static struct elf_nds32_insn_times_entry
*ex9_insn_head
= NULL
;
13584 static struct elf_nds32_ex9_refix
*ex9_refix_head
= NULL
;
13586 /* EX9 hash function. */
13588 static struct bfd_hash_entry
*
13589 nds32_elf_code_hash_newfunc (struct bfd_hash_entry
*entry
,
13590 struct bfd_hash_table
*table
,
13591 const char *string
)
13593 struct elf_nds32_code_hash_entry
*ret
;
13595 /* Allocate the structure if it has not already been allocated by a
13599 entry
= (struct bfd_hash_entry
*)
13600 bfd_hash_allocate (table
, sizeof (*ret
));
13605 /* Call the allocation method of the superclass. */
13606 entry
= bfd_hash_newfunc (entry
, table
, string
);
13610 ret
= (struct elf_nds32_code_hash_entry
*) entry
;
13612 ret
->const_insn
= 0;
13613 ret
->m_list
= NULL
;
13619 /* Insert ex9 entry
13620 this insert must be stable sorted by times. */
13623 nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry
*ptr
)
13625 struct elf_nds32_insn_times_entry
*temp
;
13626 struct elf_nds32_insn_times_entry
*temp2
;
13628 if (ex9_insn_head
== NULL
)
13630 ex9_insn_head
= ptr
;
13635 temp
= ex9_insn_head
;
13636 temp2
= ex9_insn_head
;
13637 while (temp
->next
&&
13638 (temp
->next
->times
>= ptr
->times
13639 || temp
->times
== -1))
13641 if (temp
->times
== -1)
13645 if (ptr
->times
> temp
->times
&& temp
->times
!= -1)
13648 if (temp2
->times
== -1)
13651 ex9_insn_head
= ptr
;
13653 else if (temp
->next
== NULL
)
13660 ptr
->next
= temp
->next
;
13666 /* Examine each insn times in hash table.
13667 Handle multi-link hash entry.
13669 TODO: This function doesn't assign so much info since it is fake. */
13672 nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry
*h
)
13674 struct elf_nds32_insn_times_entry
*ptr
;
13677 if (h
->m_list
== NULL
)
13679 /* Local symbol insn or insn without relocation. */
13683 ptr
= (struct elf_nds32_insn_times_entry
*)
13684 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13685 ptr
->times
= h
->times
;
13686 ptr
->string
= h
->root
.string
;
13687 ptr
->m_list
= NULL
;
13689 ptr
->irel
= h
->irel
;
13690 ptr
->rel_backup
= h
->rel_backup
;
13691 nds32_elf_ex9_insert_entry (ptr
);
13695 /* Global symbol insn. */
13696 /* Only sethi insn has multiple m_list. */
13697 struct elf_link_hash_entry_mul_list
*m_list
= h
->m_list
;
13702 times
+= m_list
->times
;
13703 m_list
= m_list
->next
;
13707 m_list
= h
->m_list
;
13708 ptr
= (struct elf_nds32_insn_times_entry
*)
13709 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13710 ptr
->times
= times
; /* Use the total times. */
13711 ptr
->string
= h
->root
.string
;
13712 ptr
->m_list
= m_list
;
13714 ptr
->irel
= m_list
->irel
;
13715 ptr
->rel_backup
= m_list
->rel_backup
;
13716 nds32_elf_ex9_insert_entry (ptr
);
13718 if (h
->const_insn
== 1)
13720 /* sethi with constant value. */
13724 ptr
= (struct elf_nds32_insn_times_entry
*)
13725 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13726 ptr
->times
= h
->times
;
13727 ptr
->string
= h
->root
.string
;
13728 ptr
->m_list
= NULL
;
13731 ptr
->rel_backup
= h
->rel_backup
;
13732 nds32_elf_ex9_insert_entry (ptr
);
13738 /* Count each insn times in hash table.
13739 Handle multi-link hash entry. */
13742 nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry
*h
)
13744 int reservation
, times
;
13745 unsigned long relocation
, min_relocation
;
13746 struct elf_nds32_insn_times_entry
*ptr
;
13748 if (h
->m_list
== NULL
)
13750 /* Local symbol insn or insn without relocation. */
13753 ptr
= (struct elf_nds32_insn_times_entry
*)
13754 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13755 ptr
->times
= h
->times
;
13756 ptr
->string
= h
->root
.string
;
13757 ptr
->m_list
= NULL
;
13759 ptr
->irel
= h
->irel
;
13760 ptr
->rel_backup
= h
->rel_backup
;
13761 nds32_elf_ex9_insert_entry (ptr
);
13765 /* Global symbol insn. */
13766 /* Only sethi insn has multiple m_list. */
13767 struct elf_link_hash_entry_mul_list
*m_list
= h
->m_list
;
13769 if (ELF32_R_TYPE (m_list
->rel_backup
.r_info
) == R_NDS32_HI20_RELA
13770 && m_list
->next
!= NULL
)
13772 /* Sethi insn has different symbol or addend but has same hi20. */
13776 min_relocation
= 0xffffffff;
13779 /* Get the minimum sethi address
13780 and calculate how many entry the sethi-list have to use. */
13781 if ((m_list
->h_list
->h
->root
.type
== bfd_link_hash_defined
13782 || m_list
->h_list
->h
->root
.type
== bfd_link_hash_defweak
)
13783 && (m_list
->h_list
->h
->root
.u
.def
.section
!= NULL
13784 && m_list
->h_list
->h
->root
.u
.def
.section
->output_section
!= NULL
))
13786 relocation
= (m_list
->h_list
->h
->root
.u
.def
.value
+
13787 m_list
->h_list
->h
->root
.u
.def
.section
->output_section
->vma
+
13788 m_list
->h_list
->h
->root
.u
.def
.section
->output_offset
);
13789 relocation
+= m_list
->irel
->r_addend
;
13793 if (relocation
< min_relocation
)
13794 min_relocation
= relocation
;
13795 times
+= m_list
->times
;
13796 m_list
= m_list
->next
;
13798 if (min_relocation
< ex9_relax_size
)
13799 reservation
= (min_relocation
>> 12) + 1;
13801 reservation
= (min_relocation
>> 12)
13802 - ((min_relocation
- ex9_relax_size
) >> 12) + 1;
13803 if (reservation
< (times
/ 3))
13805 /* Efficient enough to use ex9. */
13808 for (i
= reservation
; i
> 0; i
--)
13810 /* Allocate number of reservation ex9 entry. */
13811 ptr
= (struct elf_nds32_insn_times_entry
*)
13812 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13813 ptr
->times
= h
->m_list
->times
/ reservation
;
13814 ptr
->string
= h
->root
.string
;
13815 ptr
->m_list
= h
->m_list
;
13817 ptr
->irel
= h
->m_list
->irel
;
13818 ptr
->rel_backup
= h
->m_list
->rel_backup
;
13819 nds32_elf_ex9_insert_entry (ptr
);
13825 /* Normal global symbol that means no different address symbol
13826 using same ex9 entry. */
13827 if (m_list
->times
>= 3)
13829 ptr
= (struct elf_nds32_insn_times_entry
*)
13830 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13831 ptr
->times
= m_list
->times
;
13832 ptr
->string
= h
->root
.string
;
13833 ptr
->m_list
= h
->m_list
;
13835 ptr
->irel
= h
->m_list
->irel
;
13836 ptr
->rel_backup
= h
->m_list
->rel_backup
;
13837 nds32_elf_ex9_insert_entry (ptr
);
13841 if (h
->const_insn
== 1)
13843 /* sethi with constant value. */
13847 ptr
= (struct elf_nds32_insn_times_entry
*)
13848 bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
13849 ptr
->times
= h
->times
;
13850 ptr
->string
= h
->root
.string
;
13851 ptr
->m_list
= NULL
;
13854 ptr
->rel_backup
= h
->rel_backup
;
13855 nds32_elf_ex9_insert_entry (ptr
);
13862 /* Hash table traverse function. */
13865 nds32_elf_code_hash_traverse (int (*func
) (struct elf_nds32_code_hash_entry
*))
13869 ex9_code_table
.frozen
= 1;
13870 for (i
= 0; i
< ex9_code_table
.size
; i
++)
13872 struct bfd_hash_entry
*p
;
13874 for (p
= ex9_code_table
.table
[i
]; p
!= NULL
; p
= p
->next
)
13875 if (!func ((struct elf_nds32_code_hash_entry
*) p
))
13879 ex9_code_table
.frozen
= 0;
13883 /* Give order number to insn list. */
13886 nds32_elf_order_insn_times (struct bfd_link_info
*info
)
13888 struct elf_nds32_insn_times_entry
*ex9_insn
;
13889 struct elf_nds32_insn_times_entry
*temp
= NULL
;
13890 struct elf_nds32_link_hash_table
*table
;
13894 if (ex9_insn_head
== NULL
)
13897 /* The max number of entries is 512. */
13898 ex9_insn
= ex9_insn_head
;
13899 table
= nds32_elf_hash_table (info
);
13900 ex9_limit
= table
->ex9_limit
;
13902 ex9_insn
= ex9_insn_head
;
13904 while (ex9_insn
!= NULL
&& number
< ex9_limit
)
13906 ex9_insn
->order
= number
;
13909 ex9_insn
= ex9_insn
->next
;
13912 if (ex9_insn
&& temp
)
13915 while (ex9_insn
!= NULL
)
13917 /* Free useless entry. */
13919 ex9_insn
= ex9_insn
->next
;
13924 /* Build .ex9.itable section. */
13927 nds32_elf_ex9_build_itable (struct bfd_link_info
*link_info
)
13929 asection
*table_sec
;
13930 struct elf_nds32_insn_times_entry
*ptr
;
13933 bfd_byte
*contents
= NULL
;
13935 for (it_abfd
= link_info
->input_bfds
; it_abfd
!= NULL
;
13936 it_abfd
= it_abfd
->link
.next
)
13938 /* Find the section .ex9.itable, and put all entries into it. */
13939 table_sec
= bfd_get_section_by_name (it_abfd
, ".ex9.itable");
13940 if (table_sec
!= NULL
)
13942 if (!nds32_get_section_contents (it_abfd
, table_sec
, &contents
, TRUE
))
13945 for (ptr
= ex9_insn_head
; ptr
!=NULL
; ptr
= ptr
->next
)
13948 table_sec
->size
= number
* 4;
13953 elf_elfheader (link_info
->output_bfd
)->e_flags
|= E_NDS32_HAS_EX9_INST
;
13955 for (ptr
= ex9_insn_head
; ptr
!=NULL
; ptr
= ptr
->next
)
13959 val
= strtol (ptr
->string
, NULL
, 16);
13960 bfd_putb32 ((bfd_vma
) val
, (char *) contents
+ (number
* 4));
13968 /* Get insn with regs according to relocation type. */
13971 nds32_elf_get_insn_with_reg (Elf_Internal_Rela
*irel
,
13972 uint32_t insn
, uint32_t *insn_with_reg
)
13974 reloc_howto_type
*howto
= NULL
;
13977 || (ELF32_R_TYPE (irel
->r_info
) >= (int) ARRAY_SIZE (nds32_elf_howto_table
)
13978 && (ELF32_R_TYPE (irel
->r_info
) - R_NDS32_RELAX_ENTRY
)
13979 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table
)))
13981 *insn_with_reg
= insn
;
13985 howto
= bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel
->r_info
));
13986 *insn_with_reg
= insn
& (0xffffffff ^ howto
->dst_mask
);
13989 /* Mask number of address bits according to relocation. */
13991 static unsigned long
13992 nds32_elf_irel_mask (Elf_Internal_Rela
*irel
)
13994 reloc_howto_type
*howto
= NULL
;
13997 || (ELF32_R_TYPE (irel
->r_info
) >= (int) ARRAY_SIZE (nds32_elf_howto_table
)
13998 && (ELF32_R_TYPE (irel
->r_info
) - R_NDS32_RELAX_ENTRY
)
13999 >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table
)))
14002 howto
= bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel
->r_info
));
14003 return howto
->dst_mask
;
14007 nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry
**irel_list
,
14008 struct elf_nds32_irel_entry
*irel_ptr
)
14010 if (*irel_list
== NULL
)
14012 *irel_list
= irel_ptr
;
14013 irel_ptr
->next
= NULL
;
14017 irel_ptr
->next
= *irel_list
;
14018 *irel_list
= irel_ptr
;
14023 nds32_elf_ex9_insert_fix (asection
* sec
, Elf_Internal_Rela
* irel
,
14024 struct elf_link_hash_entry
*h
, int order
)
14026 struct elf_nds32_ex9_refix
*ptr
;
14028 ptr
= bfd_malloc (sizeof (struct elf_nds32_ex9_refix
));
14032 ptr
->order
= order
;
14035 if (ex9_refix_head
== NULL
)
14036 ex9_refix_head
= ptr
;
14039 struct elf_nds32_ex9_refix
*temp
= ex9_refix_head
;
14041 while (temp
->next
!= NULL
)
14050 CLEAN_PRE
= 1 << 1,
14054 /* Check relocation type if supporting for ex9. */
14057 nds32_elf_ex9_relocation_check (struct bfd_link_info
*info
,
14058 Elf_Internal_Rela
**irel
,
14059 Elf_Internal_Rela
*irelend
,
14060 nds32_elf_blank_t
*relax_blank_list
,
14061 asection
*sec
,bfd_vma
*off
,
14062 bfd_byte
*contents
)
14064 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
14065 bfd_boolean nested_ex9
, nested_loop
;
14066 bfd_boolean ex9_loop_aware
;
14067 /* We use the highest 1 byte of result to record
14068 how many bytes location counter has to move. */
14070 Elf_Internal_Rela
*irel_save
= NULL
;
14071 struct elf_nds32_link_hash_table
*table
;
14073 table
= nds32_elf_hash_table (info
);
14074 ex9_loop_aware
= table
->ex9_loop_aware
;
14076 while ((*irel
) != NULL
&& (*irel
) < irelend
&& *off
== (*irel
)->r_offset
)
14078 switch (ELF32_R_TYPE ((*irel
)->r_info
))
14080 case R_NDS32_RELAX_REGION_BEGIN
:
14081 /* Ignore code block. */
14082 nested_ex9
= FALSE
;
14083 nested_loop
= FALSE
;
14084 if (((*irel
)->r_addend
& R_NDS32_RELAX_REGION_NO_EX9_FLAG
)
14086 && ((*irel
)->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
)))
14088 /* Check the region if loop or not. If it is true and
14089 ex9-loop-aware is true, ignore the region till region end. */
14090 /* To save the status for in .no_relax ex9 region and
14091 loop region to conform the block can do ex9 relaxation. */
14092 nested_ex9
= ((*irel
)->r_addend
& R_NDS32_RELAX_REGION_NO_EX9_FLAG
);
14093 nested_loop
= (ex9_loop_aware
14094 && ((*irel
)->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
));
14095 while ((*irel
) && (*irel
) < irelend
&& (nested_ex9
|| nested_loop
))
14098 if (ELF32_R_TYPE ((*irel
)->r_info
) == R_NDS32_RELAX_REGION_BEGIN
)
14100 /* There may be nested region. */
14101 if (((*irel
)->r_addend
& R_NDS32_RELAX_REGION_NO_EX9_FLAG
) != 0)
14103 else if (ex9_loop_aware
14104 && ((*irel
)->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
))
14105 nested_loop
= TRUE
;
14107 else if (ELF32_R_TYPE ((*irel
)->r_info
) == R_NDS32_RELAX_REGION_END
)
14109 /* The end of region. */
14110 if (((*irel
)->r_addend
& R_NDS32_RELAX_REGION_NO_EX9_FLAG
) != 0)
14111 nested_ex9
= FALSE
;
14112 else if (ex9_loop_aware
14113 && ((*irel
)->r_addend
& R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG
))
14114 nested_loop
= FALSE
;
14116 else if (ELF32_R_TYPE ((*irel
)->r_info
) == R_NDS32_LABEL
14117 && ((*irel
)->r_addend
& 0x1f) == 2)
14119 /* Alignment exist in the region. */
14120 result
|= CLEAN_PRE
;
14121 if (((*irel
)->r_offset
-
14122 get_nds32_elf_blank_total (&relax_blank_list
,
14123 (*irel
)->r_offset
, 0)) & 0x02)
14124 result
|= PUSH_PRE
;
14127 if ((*irel
) >= irelend
)
14130 *off
= (*irel
)->r_offset
;
14132 /* The final instruction in the region, regard this one as data to ignore it. */
14133 result
|= DATA_EXIST
;
14138 case R_NDS32_LABEL
:
14139 if (((*irel
)->r_addend
& 0x1f) == 2)
14141 /* Check this point is align and decide to do ex9 or not. */
14142 result
|= CLEAN_PRE
;
14143 if (((*irel
)->r_offset
-
14144 get_nds32_elf_blank_total (&relax_blank_list
,
14145 (*irel
)->r_offset
, 0)) & 0x02)
14146 result
|= PUSH_PRE
;
14149 case R_NDS32_32_RELA
:
14151 result
|= (4 << 24);
14152 result
|= DATA_EXIST
;
14154 case R_NDS32_16_RELA
:
14156 result
|= (2 << 24);
14157 result
|= DATA_EXIST
;
14161 /* The least code alignment is 2. If the data is only one byte,
14162 we have to shift one more byte. */
14163 if ((*irel
)->r_addend
== 1)
14164 result
|= ((*irel
)->r_addend
<< 25) ;
14166 result
|= ((*irel
)->r_addend
<< 24) ;
14168 result
|= DATA_EXIST
;
14171 case R_NDS32_25_PCREL_RELA
:
14172 case R_NDS32_SDA16S3_RELA
:
14173 case R_NDS32_SDA15S3_RELA
:
14174 case R_NDS32_SDA15S3
:
14175 case R_NDS32_SDA17S2_RELA
:
14176 case R_NDS32_SDA15S2_RELA
:
14177 case R_NDS32_SDA12S2_SP_RELA
:
14178 case R_NDS32_SDA12S2_DP_RELA
:
14179 case R_NDS32_SDA15S2
:
14180 case R_NDS32_SDA18S1_RELA
:
14181 case R_NDS32_SDA15S1_RELA
:
14182 case R_NDS32_SDA15S1
:
14183 case R_NDS32_SDA19S0_RELA
:
14184 case R_NDS32_SDA15S0_RELA
:
14185 case R_NDS32_SDA15S0
:
14186 case R_NDS32_HI20_RELA
:
14187 case R_NDS32_LO12S0_ORI_RELA
:
14188 case R_NDS32_LO12S0_RELA
:
14189 case R_NDS32_LO12S1_RELA
:
14190 case R_NDS32_LO12S2_RELA
:
14191 /* These relocation is supported ex9 relaxation currently. */
14192 /* We have to save the relocation for using later, since we have
14193 to check there is any alignment in the same address. */
14197 /* Not support relocations. */
14198 if (ELF32_R_TYPE ((*irel
)->r_info
) < ARRAY_SIZE (nds32_elf_howto_table
)
14199 && ELF32_R_TYPE ((*irel
)->r_info
) != R_NDS32_NONE
14200 && ELF32_R_TYPE ((*irel
)->r_info
) != R_NDS32_INSN16
)
14202 /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here.
14203 But we have to consider if there is any side-effect. */
14204 if (!(result
& DATA_EXIST
))
14206 /* We have to confirm there is no data relocation in the
14207 same address. In general case, this won't happen. */
14208 /* We have to do ex9 conservative, for those relocation not
14209 considerd we ignore instruction. */
14210 result
|= DATA_EXIST
;
14211 if (*(contents
+ *off
) & 0x80)
14212 result
|= (2 << 24);
14214 result
|= (4 << 24);
14219 if ((*irel
) < irelend
14220 && ((*irel
) + 1) < irelend
14221 && (*irel
)->r_offset
== ((*irel
) + 1)->r_offset
)
14222 /* There are relocations pointing to the same address, we have to
14223 check all of them. */
14235 /* Replace with ex9 instruction. */
14238 nds32_elf_ex9_push_insn (uint16_t insn16
, bfd_byte
*contents
, bfd_vma pre_off
,
14239 nds32_elf_blank_t
**relax_blank_list
,
14240 struct elf_nds32_irel_entry
*pre_irel_ptr
,
14241 struct elf_nds32_irel_entry
**irel_list
)
14245 /* Implement the ex9 relaxation. */
14246 bfd_putb16 (insn16
, contents
+ pre_off
);
14247 if (!insert_nds32_elf_blank_recalc_total (relax_blank_list
,
14250 if (pre_irel_ptr
!= NULL
)
14251 nds32_elf_insert_irel_entry (irel_list
, pre_irel_ptr
);
14256 /* Replace input file instruction which is in ex9 itable. */
14259 nds32_elf_ex9_replace_instruction (struct bfd_link_info
*info
, bfd
*abfd
, asection
*sec
)
14261 struct elf_nds32_insn_times_entry
*ex9_insn
= ex9_insn_head
;
14262 bfd_byte
*contents
= NULL
;
14264 uint16_t insn16
, insn_ex9
;
14265 /* `pre_*' are used to track previous instruction that can use ex9.it. */
14266 bfd_vma pre_off
= -1;
14267 uint16_t pre_insn16
= 0;
14268 struct elf_nds32_irel_entry
*pre_irel_ptr
= NULL
;
14269 Elf_Internal_Rela
*internal_relocs
;
14270 Elf_Internal_Rela
*irel
;
14271 Elf_Internal_Rela
*irelend
;
14272 Elf_Internal_Shdr
*symtab_hdr
;
14273 Elf_Internal_Sym
*isym
= NULL
;
14274 nds32_elf_blank_t
*relax_blank_list
= NULL
;
14276 uint32_t insn_with_reg
= 0;
14278 uint32_t it_insn_with_reg
;
14279 unsigned long r_symndx
;
14281 struct elf_nds32_irel_entry
*irel_list
= NULL
;
14282 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (abfd
);
14283 int data_flag
, do_replace
, save_irel
;
14284 struct elf_link_hash_entry_list
*h_list
;
14287 /* Load section instructions, relocations, and symbol table. */
14288 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
)
14289 || !nds32_get_local_syms (abfd
, sec
, &isym
))
14292 _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
, TRUE
/* keep_memory */);
14293 irelend
= internal_relocs
+ sec
->reloc_count
;
14294 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
14298 /* Check if the object enable ex9. */
14299 irel
= find_relocs_at_address (internal_relocs
, internal_relocs
,
14300 irelend
, R_NDS32_RELAX_ENTRY
);
14302 /* Check this section trigger ex9 relaxation. */
14305 || ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_ENTRY
14306 || (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_ENTRY
14307 && !(irel
->r_addend
& R_NDS32_RELAX_ENTRY_EX9_FLAG
)))
14310 irel
= internal_relocs
;
14312 /* Check alignment and fetch proper relocation. */
14313 while (off
< sec
->size
)
14315 struct elf_link_hash_entry
*h
= NULL
;
14316 struct elf_nds32_irel_entry
*irel_ptr
= NULL
;
14318 /* Syn the instruction and the relocation. */
14319 while (irel
!= NULL
&& irel
< irelend
&& irel
->r_offset
< off
)
14322 data_flag
= nds32_elf_ex9_relocation_check (info
, &irel
, irelend
,
14323 relax_blank_list
, sec
,
14325 if (data_flag
& PUSH_PRE
)
14326 if (!nds32_elf_ex9_push_insn (pre_insn16
, contents
, pre_off
,
14327 &relax_blank_list
, pre_irel_ptr
,
14331 if (data_flag
& CLEAN_PRE
)
14335 pre_irel_ptr
= NULL
;
14337 if (data_flag
& DATA_EXIST
)
14339 /* We save the move offset in the highest byte. */
14340 off
+= (data_flag
>> 24);
14344 if (*(contents
+ off
) & 0x80)
14346 /* 2-byte instruction. */
14351 /* Load the instruction and its opcode with register for comparing. */
14352 ex9_insn
= ex9_insn_head
;
14353 insn
= bfd_getb32 (contents
+ off
);
14357 it_insn
= strtol (ex9_insn
->string
, NULL
, 16);
14358 it_insn_with_reg
= 0;
14362 if (irel
!= NULL
&& irel
< irelend
&& irel
->r_offset
== off
)
14364 /* Insn with relocation. */
14365 nds32_elf_get_insn_with_reg (irel
, insn
, &insn_with_reg
);
14367 if (ex9_insn
->irel
!= NULL
)
14368 nds32_elf_get_insn_with_reg (ex9_insn
->irel
, it_insn
,
14369 &it_insn_with_reg
);
14371 if (ex9_insn
->irel
!= NULL
14372 && (ELF32_R_TYPE (irel
->r_info
) ==
14373 ELF32_R_TYPE (ex9_insn
->irel
->r_info
))
14374 && (insn_with_reg
== it_insn_with_reg
))
14376 /* Insn relocation and format is the same as table entry. */
14378 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_25_PCREL_RELA
14379 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S0_ORI_RELA
14380 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S0_RELA
14381 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S1_RELA
14382 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S2_RELA
14383 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3
14384 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0
)
14385 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3_RELA
14386 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0_RELA
)
14387 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA12S2_DP_RELA
14388 && ELF32_R_TYPE (irel
->r_info
) <=
14389 R_NDS32_SDA12S2_SP_RELA
)
14390 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA16S3_RELA
14391 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA19S0_RELA
))
14393 r_symndx
= ELF32_R_SYM (irel
->r_info
);
14394 if (r_symndx
< symtab_hdr
->sh_info
)
14396 /* Local symbol. */
14397 int shndx
= isym
[r_symndx
].st_shndx
;
14399 isec
= elf_elfsections (abfd
)[shndx
]->bfd_section
;
14400 if (ex9_insn
->sec
== isec
14401 && ex9_insn
->irel
->r_addend
== irel
->r_addend
14402 && ex9_insn
->irel
->r_info
== irel
->r_info
)
14410 /* External symbol. */
14411 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
14412 if (ex9_insn
->m_list
)
14414 h_list
= ex9_insn
->m_list
->h_list
;
14418 && (ex9_insn
->m_list
->irel
->r_addend
==
14425 h_list
= h_list
->next
;
14430 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_HI20_RELA
)
14432 r_symndx
= ELF32_R_SYM (irel
->r_info
);
14433 if (r_symndx
< symtab_hdr
->sh_info
)
14435 /* Local symbols. Compare its base symbol and offset. */
14436 int shndx
= isym
[r_symndx
].st_shndx
;
14438 isec
= elf_elfsections (abfd
)[shndx
]->bfd_section
;
14439 if (ex9_insn
->sec
== isec
14440 && ex9_insn
->irel
->r_addend
== irel
->r_addend
14441 && ex9_insn
->irel
->r_info
== irel
->r_info
)
14449 /* External symbol. */
14450 struct elf_link_hash_entry_mul_list
*m_list
;
14452 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
14453 m_list
= ex9_insn
->m_list
;
14457 h_list
= m_list
->h_list
;
14462 && (m_list
->irel
->r_addend
14463 == irel
->r_addend
))
14468 && ex9_insn
->m_list
14469 && ex9_insn
->m_list
== ex9_insn
->next
->m_list
)
14471 /* sethi multiple entry must be fixed */
14472 nds32_elf_ex9_insert_fix (sec
, irel
,
14473 h
, ex9_insn
->order
);
14477 h_list
= h_list
->next
;
14479 m_list
= m_list
->next
;
14485 /* Import table: Check the symbol hash table and the
14486 jump target. Only R_NDS32_25_PCREL_RELA now. */
14487 else if (ex9_insn
->times
== -1
14488 && ELF32_R_TYPE (irel
->r_info
) == R_NDS32_25_PCREL_RELA
)
14490 nds32_elf_get_insn_with_reg (irel
, it_insn
, &it_insn_with_reg
);
14491 if (insn_with_reg
== it_insn_with_reg
)
14494 bfd_vma relocation
;
14496 r_symndx
= ELF32_R_SYM (irel
->r_info
);
14497 if (r_symndx
>= symtab_hdr
->sh_info
)
14499 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
14500 if ((h
->root
.type
== bfd_link_hash_defined
14501 || h
->root
.type
== bfd_link_hash_defweak
)
14502 && h
->root
.u
.def
.section
!= NULL
14503 && h
->root
.u
.def
.section
->output_section
!= NULL
14504 && h
->root
.u
.def
.section
->gc_mark
== 1
14505 && bfd_is_abs_section (h
->root
.u
.def
.section
)
14506 && h
->root
.u
.def
.value
> sec
->size
)
14508 relocation
= h
->root
.u
.def
.value
+
14509 h
->root
.u
.def
.section
->output_section
->vma
+
14510 h
->root
.u
.def
.section
->output_offset
;
14511 relocation
+= irel
->r_addend
;
14512 insn
= insn_with_reg
14513 | ((relocation
>> 1) & 0xffffff);
14514 snprintf (code
, sizeof (code
), "%08x", insn
);
14515 if (strcmp (code
, ex9_insn
->string
) == 0)
14524 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
14525 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_END
14526 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_NONE
)
14528 /* These relocations do not have to relocate contens, so it can
14529 be regard as instruction without relocation. */
14530 if (insn
== it_insn
&& ex9_insn
->irel
== NULL
)
14536 /* Instruction without relocation, we only
14537 have to compare their byte code. */
14538 if (insn
== it_insn
&& ex9_insn
->irel
== NULL
)
14542 /* Insntruction match so replacing the code here. */
14543 if (do_replace
== 1)
14545 /* There are two formats of ex9 instruction. */
14546 if (ex9_insn
->order
< 32)
14547 insn_ex9
= INSN_EX9_IT_2
;
14549 insn_ex9
= INSN_EX9_IT_1
;
14550 insn16
= insn_ex9
| ex9_insn
->order
;
14552 /* Insert ex9 instruction. */
14553 nds32_elf_ex9_push_insn (pre_insn16
, contents
, pre_off
,
14554 &relax_blank_list
, pre_irel_ptr
,
14557 pre_insn16
= insn16
;
14561 /* For instuction with relocation do relax. */
14562 irel_ptr
= (struct elf_nds32_irel_entry
*)
14563 bfd_malloc (sizeof (struct elf_nds32_irel_entry
));
14564 irel_ptr
->irel
= irel
;
14565 irel_ptr
->next
= NULL
;
14566 pre_irel_ptr
= irel_ptr
;
14569 pre_irel_ptr
= NULL
;
14572 ex9_insn
= ex9_insn
->next
;
14577 /* Insert ex9 instruction. */
14578 nds32_elf_ex9_push_insn (pre_insn16
, contents
, pre_off
,
14579 &relax_blank_list
, pre_irel_ptr
,
14582 /* Delete the redundant code. */
14583 if (relax_blank_list
)
14585 nds32_elf_relax_delete_blanks (abfd
, sec
, relax_blank_list
);
14586 relax_blank_list
= NULL
;
14589 /* Clear the relocation that is replaced by ex9. */
14592 struct elf_nds32_irel_entry
*irel_ptr
;
14594 irel_ptr
= irel_list
;
14595 irel_list
= irel_ptr
->next
;
14596 irel_ptr
->irel
->r_info
=
14597 ELF32_R_INFO (ELF32_R_SYM (irel_ptr
->irel
->r_info
), R_NDS32_TRAN
);
14603 /* Initialize ex9 hash table. */
14606 nds32_elf_ex9_init (void)
14608 if (!bfd_hash_table_init_n (&ex9_code_table
, nds32_elf_code_hash_newfunc
,
14609 sizeof (struct elf_nds32_code_hash_entry
),
14612 _bfd_error_handler (_("cannot init ex9 hash table error"));
14618 /* Predict how many bytes will be relaxed with ex9 and ifc. */
14621 nds32_elf_ex9_total_relax (struct bfd_link_info
*info
)
14623 struct elf_nds32_insn_times_entry
*ex9_insn
;
14624 struct elf_nds32_insn_times_entry
*temp
;
14625 int target_optimize
;
14626 struct elf_nds32_link_hash_table
*table
;
14628 if (ex9_insn_head
== NULL
)
14631 table
= nds32_elf_hash_table (info
);
14632 target_optimize
= table
->target_optimize
;
14633 ex9_insn
= ex9_insn_head
;
14636 ex9_relax_size
= ex9_insn
->times
* 2 + ex9_relax_size
;
14638 ex9_insn
= ex9_insn
->next
;
14641 ex9_insn_head
= NULL
;
14643 if ((target_optimize
& NDS32_RELAX_JUMP_IFC_ON
))
14645 /* Examine ifc reduce size. */
14646 struct elf_nds32_ifc_symbol_entry
*ifc_ent
= ifc_symbol_head
;
14647 struct elf_nds32_ifc_irel_list
*irel_ptr
= NULL
;
14652 if (ifc_ent
->enable
== 0)
14655 irel_ptr
= ifc_ent
->irel_head
;
14659 irel_ptr
= irel_ptr
->next
;
14663 ifc_ent
= ifc_ent
->next
;
14665 ex9_relax_size
+= size
;
14669 /* Finish ex9 table. */
14672 nds32_elf_ex9_finish (struct bfd_link_info
*link_info
)
14674 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times
);
14675 nds32_elf_order_insn_times (link_info
);
14676 nds32_elf_ex9_total_relax (link_info
);
14677 /* Traverse the hash table and count its times. */
14678 nds32_elf_code_hash_traverse (nds32_elf_count_insn_times
);
14679 nds32_elf_order_insn_times (link_info
);
14680 nds32_elf_ex9_build_itable (link_info
);
14683 /* Relocate the entries in ex9 table. */
14686 nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry
*ptr
,
14687 struct bfd_link_info
*link_info
)
14689 Elf_Internal_Sym
*isym
= NULL
;
14690 bfd_vma relocation
= -1;
14691 struct elf_link_hash_entry
*h
;
14693 if (ptr
->m_list
!= NULL
)
14695 /* Global symbol. */
14696 h
= ptr
->m_list
->h_list
->h
;
14697 if ((h
->root
.type
== bfd_link_hash_defined
14698 || h
->root
.type
== bfd_link_hash_defweak
)
14699 && h
->root
.u
.def
.section
!= NULL
14700 && h
->root
.u
.def
.section
->output_section
!= NULL
)
14703 relocation
= h
->root
.u
.def
.value
+
14704 h
->root
.u
.def
.section
->output_section
->vma
+
14705 h
->root
.u
.def
.section
->output_offset
;
14706 relocation
+= ptr
->m_list
->irel
->r_addend
;
14711 else if (ptr
->sec
!=NULL
)
14713 /* Local symbol. */
14714 Elf_Internal_Sym sym
;
14715 asection
*sec
= NULL
;
14717 asection
*isec_ptr
= &isec
;
14718 Elf_Internal_Rela irel_backup
= *(ptr
->irel
);
14719 asection
*sec_backup
= ptr
->sec
;
14720 bfd
*abfd
= ptr
->sec
->owner
;
14722 if (!nds32_get_local_syms (abfd
, sec
, &isym
))
14724 isym
= isym
+ ELF32_R_SYM (ptr
->irel
->r_info
);
14726 sec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
14731 /* The purpose is same as elf_link_input_bfd. */
14732 if (isec_ptr
!= NULL
14733 && isec_ptr
->sec_info_type
== SEC_INFO_TYPE_MERGE
14734 && ELF_ST_TYPE (isym
->st_info
) != STT_SECTION
)
14737 _bfd_merged_section_offset (ptr
->sec
->output_section
->owner
, &isec_ptr
,
14738 elf_section_data (isec_ptr
)->sec_info
,
14741 relocation
= _bfd_elf_rela_local_sym (link_info
->output_bfd
, &sym
,
14742 &ptr
->sec
, ptr
->irel
);
14743 if (ptr
->irel
!= NULL
)
14744 relocation
+= ptr
->irel
->r_addend
;
14746 /* Restore origin value since there may be some insntructions that
14747 could not be replaced with ex9.it. */
14748 *(ptr
->irel
) = irel_backup
;
14749 ptr
->sec
= sec_backup
;
14755 /* Import ex9 table and build list. */
14758 nds32_elf_ex9_import_table (struct bfd_link_info
*info
)
14761 bfd_byte
*contents
;
14762 FILE *ex9_import_file
;
14763 int update_ex9_table
;
14764 struct elf_nds32_link_hash_table
*table
;
14766 table
= nds32_elf_hash_table (info
);
14767 ex9_import_file
= table
->ex9_import_file
;
14768 rewind (table
->ex9_import_file
);
14770 contents
= bfd_malloc (sizeof (bfd_byte
) * 4);
14772 /* Read instructions from the input file and build the list. */
14773 while (!feof (ex9_import_file
))
14775 unsigned long insn
;
14777 struct elf_nds32_insn_times_entry
*ptr
;
14780 nread
= fread (contents
, sizeof (bfd_byte
) * 4, 1, ex9_import_file
);
14781 /* Ignore the final byte 0x0a. */
14784 insn
= bfd_getb32 (contents
);
14785 code
= bfd_malloc (sizeof (char) * 9);
14786 snprintf (code
, 9, "%08lx", (insn
& 0xffffffff));
14787 ptr
= bfd_malloc (sizeof (struct elf_nds32_insn_times_entry
));
14788 ptr
->string
= code
;
14792 ptr
->m_list
= NULL
;
14793 ptr
->rel_backup
.r_offset
= 0;
14794 ptr
->rel_backup
.r_info
= 0;
14795 ptr
->rel_backup
.r_addend
= 0;
14798 nds32_elf_ex9_insert_entry (ptr
);
14802 update_ex9_table
= table
->update_ex9_table
;
14803 if (update_ex9_table
== 1)
14805 /* It has to consider of sethi need to use multiple page
14806 but it not be done yet. */
14807 nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times
);
14808 nds32_elf_order_insn_times (info
);
14812 /* Export ex9 table. */
14815 nds32_elf_ex9_export (struct bfd_link_info
*info
,
14816 bfd_byte
*contents
, int size
)
14818 FILE *ex9_export_file
;
14819 struct elf_nds32_link_hash_table
*table
;
14821 table
= nds32_elf_hash_table (info
);
14822 ex9_export_file
= table
->ex9_export_file
;
14823 fwrite (contents
, sizeof (bfd_byte
), size
, ex9_export_file
);
14824 fclose (ex9_export_file
);
14827 /* Adjust relocations of J and JAL in ex9.itable.
14828 Export ex9 table. */
14831 nds32_elf_ex9_reloc_jmp (struct bfd_link_info
*link_info
)
14833 asection
*table_sec
= NULL
;
14834 struct elf_nds32_insn_times_entry
*ex9_insn
= ex9_insn_head
;
14835 struct elf_nds32_insn_times_entry
*temp_ptr
, *temp_ptr2
;
14837 uint32_t insn
, insn_with_reg
, source_insn
;
14838 bfd_byte
*contents
= NULL
, *source_contents
= NULL
;
14841 int shift
, update_ex9_table
, offset
= 0;
14842 reloc_howto_type
*howto
= NULL
;
14843 Elf_Internal_Rela rel_backup
;
14844 unsigned short insn_ex9
;
14845 struct elf_nds32_link_hash_table
*table
;
14846 FILE *ex9_export_file
;
14847 static bfd_boolean done
= FALSE
;
14854 table
= nds32_elf_hash_table (link_info
);
14856 table
->relax_status
|= NDS32_RELAX_EX9_DONE
;
14859 update_ex9_table
= table
->update_ex9_table
;
14860 /* Generated ex9.itable exactly. */
14861 if (update_ex9_table
== 0)
14863 for (it_abfd
= link_info
->input_bfds
; it_abfd
!= NULL
;
14864 it_abfd
= it_abfd
->link
.next
)
14866 table_sec
= bfd_get_section_by_name (it_abfd
, ".ex9.itable");
14867 if (table_sec
!= NULL
)
14871 if (table_sec
!= NULL
)
14875 output_bfd
= table_sec
->output_section
->owner
;
14876 nds32_elf_final_sda_base (output_bfd
, link_info
, &gp
, FALSE
);
14877 if (table_sec
->size
== 0)
14880 if (!nds32_get_section_contents (it_abfd
, table_sec
, &contents
, TRUE
))
14889 output_bfd
= link_info
->input_bfds
->sections
->output_section
->owner
;
14890 nds32_elf_final_sda_base (output_bfd
, link_info
, &gp
, FALSE
);
14891 contents
= bfd_malloc (sizeof (bfd_byte
) * 2048);
14894 /* Relocate instruction. */
14897 bfd_vma relocation
, min_relocation
= 0xffffffff;
14899 insn
= strtol (ex9_insn
->string
, NULL
, 16);
14901 if (ex9_insn
->m_list
!= NULL
|| ex9_insn
->sec
!= NULL
)
14903 if (ex9_insn
->m_list
)
14904 rel_backup
= ex9_insn
->m_list
->rel_backup
;
14906 rel_backup
= ex9_insn
->rel_backup
;
14908 nds32_elf_get_insn_with_reg (&rel_backup
, insn
, &insn_with_reg
);
14910 bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE
14911 (rel_backup
.r_info
));
14912 shift
= howto
->rightshift
;
14913 if (ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_25_PCREL_RELA
14914 || ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_LO12S0_ORI_RELA
14915 || ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_LO12S0_RELA
14916 || ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_LO12S1_RELA
14917 || ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_LO12S2_RELA
)
14919 relocation
= nds32_elf_ex9_reloc_insn (ex9_insn
, link_info
);
14921 insn_with_reg
| ((relocation
>> shift
) &
14922 nds32_elf_irel_mask (&rel_backup
));
14923 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
14925 else if ((ELF32_R_TYPE (rel_backup
.r_info
) >= R_NDS32_SDA15S3
14926 && ELF32_R_TYPE (rel_backup
.r_info
) <= R_NDS32_SDA15S0
)
14927 || (ELF32_R_TYPE (rel_backup
.r_info
) >= R_NDS32_SDA15S3_RELA
14928 && ELF32_R_TYPE (rel_backup
.r_info
) <= R_NDS32_SDA15S0_RELA
)
14929 || (ELF32_R_TYPE (rel_backup
.r_info
) >= R_NDS32_SDA12S2_DP_RELA
14930 && ELF32_R_TYPE (rel_backup
.r_info
) <= R_NDS32_SDA12S2_SP_RELA
)
14931 || (ELF32_R_TYPE (rel_backup
.r_info
) >= R_NDS32_SDA16S3_RELA
14932 && ELF32_R_TYPE (rel_backup
.r_info
) <= R_NDS32_SDA19S0_RELA
))
14934 relocation
= nds32_elf_ex9_reloc_insn (ex9_insn
, link_info
);
14936 insn_with_reg
| (((relocation
- gp
) >> shift
) &
14937 nds32_elf_irel_mask (&rel_backup
));
14938 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
14940 else if (ELF32_R_TYPE (rel_backup
.r_info
) == R_NDS32_HI20_RELA
)
14942 /* Sethi may be multiple entry for one insn. */
14943 if (ex9_insn
->next
&& ex9_insn
->m_list
14944 && ex9_insn
->m_list
== ex9_insn
->next
->m_list
)
14946 struct elf_link_hash_entry_mul_list
*m_list
;
14947 struct elf_nds32_ex9_refix
*fix_ptr
;
14948 struct elf_link_hash_entry
*h
;
14950 temp_ptr
= ex9_insn
;
14951 temp_ptr2
= ex9_insn
;
14952 m_list
= ex9_insn
->m_list
;
14955 h
= m_list
->h_list
->h
;
14956 relocation
= h
->root
.u
.def
.value
+
14957 h
->root
.u
.def
.section
->output_section
->vma
+
14958 h
->root
.u
.def
.section
->output_offset
;
14959 relocation
+= m_list
->irel
->r_addend
;
14961 if (relocation
< min_relocation
)
14962 min_relocation
= relocation
;
14963 m_list
= m_list
->next
;
14965 relocation
= min_relocation
;
14967 /* Put insntruction into ex9 table. */
14968 insn
= insn_with_reg
14969 | ((relocation
>> shift
) & nds32_elf_irel_mask (&rel_backup
));
14970 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
14971 relocation
= relocation
+ 0x1000; /* hi20 */
14973 while (ex9_insn
->next
&& ex9_insn
->m_list
14974 && ex9_insn
->m_list
== ex9_insn
->next
->m_list
)
14976 /* Multiple sethi. */
14977 ex9_insn
= ex9_insn
->next
;
14980 insn_with_reg
| ((relocation
>> shift
) &
14981 nds32_elf_irel_mask (&rel_backup
));
14982 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
14983 relocation
= relocation
+ 0x1000; /* hi20 */
14986 fix_ptr
= ex9_refix_head
;
14989 /* Fix ex9 insn. */
14990 /* temp_ptr2 points to the head of multiple sethi. */
14991 temp_ptr
= temp_ptr2
;
14992 while (fix_ptr
->order
!= temp_ptr
->order
&& fix_ptr
->next
)
14994 fix_ptr
= fix_ptr
->next
;
14996 if (fix_ptr
->order
!= temp_ptr
->order
)
14999 /* Set source insn. */
15001 fix_ptr
->h
->root
.u
.def
.value
+
15002 fix_ptr
->h
->root
.u
.def
.section
->output_section
->vma
+
15003 fix_ptr
->h
->root
.u
.def
.section
->output_offset
;
15004 relocation
+= fix_ptr
->irel
->r_addend
;
15005 /* sethi imm is imm20s. */
15006 source_insn
= insn_with_reg
| ((relocation
>> shift
) & 0xfffff);
15010 /* Match entry and source code. */
15011 insn
= bfd_getb32 (contents
+ (temp_ptr
->order
) * 4 + offset
);
15012 if (insn
== source_insn
)
15014 /* Fix the ex9 insn. */
15015 if (temp_ptr
->order
!= fix_ptr
->order
)
15017 if (!nds32_get_section_contents
15018 (fix_ptr
->sec
->owner
, fix_ptr
->sec
,
15019 &source_contents
, TRUE
))
15021 (_("error: cannot fix ex9 relocation"));
15022 if (temp_ptr
->order
< 32)
15023 insn_ex9
= INSN_EX9_IT_2
;
15025 insn_ex9
= INSN_EX9_IT_1
;
15026 insn_ex9
= insn_ex9
| temp_ptr
->order
;
15027 bfd_putb16 (insn_ex9
, source_contents
+ fix_ptr
->irel
->r_offset
);
15033 if (!temp_ptr
->next
|| temp_ptr
->m_list
!= temp_ptr
->next
->m_list
)
15035 (_("Linker: error cannot fixed ex9 relocation \n"));
15037 temp_ptr
= temp_ptr
->next
;
15040 fix_ptr
= fix_ptr
->next
;
15045 relocation
= nds32_elf_ex9_reloc_insn (ex9_insn
, link_info
);
15046 insn
= insn_with_reg
15047 | ((relocation
>> shift
) & nds32_elf_irel_mask (&rel_backup
));
15048 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
15054 /* Insn without relocation does not have to be fixed
15055 if need to update export table. */
15056 if (update_ex9_table
== 1)
15057 bfd_putb32 (insn
, contents
+ (ex9_insn
->order
) * 4);
15059 ex9_insn
= ex9_insn
->next
;
15063 ex9_export_file
= table
->ex9_export_file
;
15064 if (ex9_export_file
!= NULL
)
15065 nds32_elf_ex9_export (link_info
, contents
, table_sec
->size
);
15066 else if (update_ex9_table
== 1)
15068 table
->ex9_export_file
= table
->ex9_import_file
;
15069 rewind (table
->ex9_export_file
);
15070 nds32_elf_ex9_export (link_info
, contents
, size
);
15074 /* Generate ex9 hash table. */
15077 nds32_elf_ex9_build_hash_table (bfd
*abfd
, asection
*sec
,
15078 struct bfd_link_info
*link_info
)
15080 Elf_Internal_Rela
*internal_relocs
;
15081 Elf_Internal_Rela
*irelend
;
15082 Elf_Internal_Rela
*irel
;
15083 Elf_Internal_Rela
*jrel
;
15084 Elf_Internal_Rela rel_backup
;
15085 Elf_Internal_Shdr
*symtab_hdr
;
15086 Elf_Internal_Sym
*isym
= NULL
;
15088 struct elf_link_hash_entry
**sym_hashes
;
15089 bfd_byte
*contents
= NULL
;
15091 unsigned long r_symndx
;
15092 uint32_t insn
, insn_with_reg
;
15093 struct elf_link_hash_entry
*h
;
15094 int data_flag
, shift
, align
;
15095 bfd_vma relocation
;
15096 /* Suppress ex9 if `.no_relax ex9' or inner loop. */
15097 reloc_howto_type
*howto
= NULL
;
15099 sym_hashes
= elf_sym_hashes (abfd
);
15100 /* Load section instructions, relocations, and symbol table. */
15101 if (!nds32_get_section_contents (abfd
, sec
, &contents
, TRUE
))
15104 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, sec
, NULL
, NULL
,
15105 TRUE
/* keep_memory */);
15106 irelend
= internal_relocs
+ sec
->reloc_count
;
15107 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
15108 if (!nds32_get_local_syms (abfd
, sec
, &isym
))
15111 /* Check the object if enable ex9. */
15112 irel
= find_relocs_at_address (internal_relocs
, internal_relocs
, irelend
,
15113 R_NDS32_RELAX_ENTRY
);
15115 /* Check this section trigger ex9 relaxation. */
15118 || ELF32_R_TYPE (irel
->r_info
) != R_NDS32_RELAX_ENTRY
15119 || (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_ENTRY
15120 && !(irel
->r_addend
& R_NDS32_RELAX_ENTRY_EX9_FLAG
)))
15123 irel
= internal_relocs
;
15125 /* Push each insn into hash table. */
15126 while (off
< sec
->size
)
15129 struct elf_nds32_code_hash_entry
*entry
;
15131 while (irel
!= NULL
&& irel
< irelend
&& irel
->r_offset
< off
)
15134 data_flag
= nds32_elf_ex9_relocation_check (link_info
, &irel
, irelend
,
15135 NULL
, sec
, &off
, contents
);
15136 if (data_flag
& DATA_EXIST
)
15138 /* We save the move offset in the highest byte. */
15139 off
+= (data_flag
>> 24);
15143 if (*(contents
+ off
) & 0x80)
15152 rel_backup
.r_info
= 0;
15153 rel_backup
.r_offset
= 0;
15154 rel_backup
.r_addend
= 0;
15155 /* Load the instruction and its opcode with register for comparing. */
15156 insn
= bfd_getb32 (contents
+ off
);
15158 if (irel
!= NULL
&& irel
< irelend
&& irel
->r_offset
== off
)
15160 nds32_elf_get_insn_with_reg (irel
, insn
, &insn_with_reg
);
15161 howto
= bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel
->r_info
));
15162 shift
= howto
->rightshift
;
15163 align
= (1 << shift
) - 1;
15164 if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_25_PCREL_RELA
15165 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_HI20_RELA
15166 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S0_ORI_RELA
15167 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S0_RELA
15168 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S1_RELA
15169 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_LO12S2_RELA
15170 ||(ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3
15171 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0
)
15172 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3_RELA
15173 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0_RELA
)
15174 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA12S2_DP_RELA
15175 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA12S2_SP_RELA
)
15176 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA16S3_RELA
15177 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA19S0_RELA
))
15179 r_symndx
= ELF32_R_SYM (irel
->r_info
);
15181 rel_backup
= *irel
;
15182 if (r_symndx
< symtab_hdr
->sh_info
)
15184 /* Local symbol. */
15185 int shndx
= isym
[r_symndx
].st_shndx
;
15187 bfd_vma st_value
= (isym
+ r_symndx
)->st_value
;
15188 isec
= elf_elfsections (abfd
)[shndx
]->bfd_section
;
15189 relocation
= (isec
->output_section
->vma
+ isec
->output_offset
15190 + st_value
+ irel
->r_addend
);
15194 /* External symbol. */
15195 bfd_boolean warned ATTRIBUTE_UNUSED
;
15196 bfd_boolean ignored ATTRIBUTE_UNUSED
;
15197 bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED
;
15200 /* Maybe there is a better way to get h and relocation */
15201 RELOC_FOR_GLOBAL_SYMBOL (link_info
, abfd
, sec
, irel
,
15202 r_symndx
, symtab_hdr
, sym_hashes
,
15203 h
, sym_sec
, relocation
,
15204 unresolved_reloc
, warned
, ignored
);
15205 relocation
+= irel
->r_addend
;
15206 if ((h
->root
.type
!= bfd_link_hash_defined
15207 && h
->root
.type
!= bfd_link_hash_defweak
)
15208 || strcmp (h
->root
.root
.string
, "_FP_BASE_") == 0)
15215 /* Check for gp relative instruction alignment. */
15216 if ((ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3
15217 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0
)
15218 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA15S3_RELA
15219 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA15S0_RELA
)
15220 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA12S2_DP_RELA
15221 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA12S2_SP_RELA
)
15222 || (ELF32_R_TYPE (irel
->r_info
) >= R_NDS32_SDA16S3_RELA
15223 && ELF32_R_TYPE (irel
->r_info
) <= R_NDS32_SDA19S0_RELA
))
15226 bfd
*output_bfd
= sec
->output_section
->owner
;
15227 bfd_reloc_status_type r
;
15229 /* If the symbol is in the abs section, the out_bfd will be null.
15230 This happens when the relocation has a symbol@GOTOFF. */
15231 r
= nds32_elf_final_sda_base (output_bfd
, link_info
, &gp
, FALSE
);
15232 if (r
!= bfd_reloc_ok
)
15240 /* Make sure alignment is correct. */
15241 if (relocation
& align
)
15243 /* Incorrect alignment. */
15245 /* xgettext:c-format */
15246 (_("%pB: warning: unaligned small data access "
15247 "for entry: {%" PRId64
", %" PRId64
", %" PRId64
15248 "}, addr = %#" PRIx64
", align = %#x"),
15249 abfd
, (int64_t) irel
->r_offset
,
15250 (int64_t) irel
->r_info
, (int64_t) irel
->r_addend
,
15251 (uint64_t) relocation
, align
);
15257 insn
= insn_with_reg
15258 | ((relocation
>> shift
) & nds32_elf_irel_mask (irel
));
15260 else if (ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_BEGIN
15261 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_RELAX_REGION_END
15262 || ELF32_R_TYPE (irel
->r_info
) == R_NDS32_NONE
)
15264 /* These relocations do not have to relocate contens, so it can
15265 be regard as instruction without relocation. */
15274 snprintf (code
, sizeof (code
), "%08x", insn
);
15276 entry
= (struct elf_nds32_code_hash_entry
*)
15277 bfd_hash_lookup (&ex9_code_table
, code
, TRUE
, TRUE
);
15281 (_("failed creating ex9.it %s hash table entry"), code
);
15286 if (h
->root
.type
== bfd_link_hash_undefined
)
15288 /* Global symbol. */
15289 /* In order to do sethi with different symbol but same value. */
15290 if (entry
->m_list
== NULL
)
15292 struct elf_link_hash_entry_mul_list
*m_list_new
;
15293 struct elf_link_hash_entry_list
*h_list_new
;
15295 m_list_new
= (struct elf_link_hash_entry_mul_list
*)
15296 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list
));
15297 h_list_new
= (struct elf_link_hash_entry_list
*)
15298 bfd_malloc (sizeof (struct elf_link_hash_entry_list
));
15299 entry
->m_list
= m_list_new
;
15300 m_list_new
->h_list
= h_list_new
;
15301 m_list_new
->rel_backup
= rel_backup
;
15302 m_list_new
->times
= 1;
15303 m_list_new
->irel
= jrel
;
15304 m_list_new
->next
= NULL
;
15306 h_list_new
->next
= NULL
;
15310 struct elf_link_hash_entry_mul_list
*m_list
= entry
->m_list
;
15311 struct elf_link_hash_entry_list
*h_list
;
15315 /* Build the different symbols that point to the same address. */
15316 h_list
= m_list
->h_list
;
15317 if (h_list
->h
->root
.u
.def
.value
== h
->root
.u
.def
.value
15318 && h_list
->h
->root
.u
.def
.section
->output_section
->vma
15319 == h
->root
.u
.def
.section
->output_section
->vma
15320 && h_list
->h
->root
.u
.def
.section
->output_offset
15321 == h
->root
.u
.def
.section
->output_offset
15322 && m_list
->rel_backup
.r_addend
== rel_backup
.r_addend
)
15325 m_list
->irel
= jrel
;
15326 while (h_list
->h
!= h
&& h_list
->next
)
15327 h_list
= h_list
->next
;
15328 if (h_list
->h
!= h
)
15330 struct elf_link_hash_entry_list
*h_list_new
;
15332 h_list_new
= (struct elf_link_hash_entry_list
*)
15333 bfd_malloc (sizeof (struct elf_link_hash_entry_list
));
15334 h_list
->next
= h_list_new
;
15336 h_list_new
->next
= NULL
;
15340 /* The sethi case may have different address but the
15341 hi20 is the same. */
15342 else if (ELF32_R_TYPE (jrel
->r_info
) == R_NDS32_HI20_RELA
15343 && m_list
->next
== NULL
)
15345 struct elf_link_hash_entry_mul_list
*m_list_new
;
15346 struct elf_link_hash_entry_list
*h_list_new
;
15348 m_list_new
= (struct elf_link_hash_entry_mul_list
*)
15349 bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list
));
15350 h_list_new
= (struct elf_link_hash_entry_list
*)
15351 bfd_malloc (sizeof (struct elf_link_hash_entry_list
));
15352 m_list
->next
= m_list_new
;
15353 m_list_new
->h_list
= h_list_new
;
15354 m_list_new
->rel_backup
= rel_backup
;
15355 m_list_new
->times
= 1;
15356 m_list_new
->irel
= jrel
;
15357 m_list_new
->next
= NULL
;
15359 h_list_new
->next
= NULL
;
15362 m_list
= m_list
->next
;
15373 /* Local symbol and insn without relocation*/
15375 entry
->rel_backup
= rel_backup
;
15378 /* Use in sethi insn with constant and global symbol in same format. */
15380 entry
->const_insn
= 1;
15382 entry
->irel
= jrel
;
15390 /* Set the _ITB_BASE, and point it to ex9 table. */
15393 nds32_elf_ex9_itb_base (struct bfd_link_info
*link_info
)
15397 bfd
*output_bfd
= NULL
;
15398 struct bfd_link_hash_entry
*bh
= NULL
;
15400 if (is_ITB_BASE_set
== 1)
15403 is_ITB_BASE_set
= 1;
15405 bh
= bfd_link_hash_lookup (link_info
->hash
, "_ITB_BASE_", FALSE
, FALSE
, TRUE
);
15407 if (bh
&& (bh
->type
== bfd_link_hash_defined
15408 || bh
->type
== bfd_link_hash_defweak
))
15411 for (abfd
= link_info
->input_bfds
; abfd
!= NULL
;
15412 abfd
= abfd
->link
.next
)
15414 sec
= bfd_get_section_by_name (abfd
, ".ex9.itable");
15417 output_bfd
= sec
->output_section
->owner
;
15421 if (output_bfd
== NULL
)
15423 output_bfd
= link_info
->output_bfd
;
15424 if (output_bfd
->sections
== NULL
)
15427 sec
= bfd_abs_section_ptr
;
15429 bh
= bfd_link_hash_lookup (link_info
->hash
, "_ITB_BASE_",
15430 FALSE
, FALSE
, TRUE
);
15431 return (_bfd_generic_link_add_one_symbol
15432 (link_info
, output_bfd
, "_ITB_BASE_",
15433 BSF_GLOBAL
| BSF_WEAK
, sec
, 0,
15434 (const char *) NULL
, FALSE
, get_elf_backend_data
15435 (output_bfd
)->collect
, &bh
));
15439 #define ELF_ARCH bfd_arch_nds32
15440 #define ELF_MACHINE_CODE EM_NDS32
15441 #define ELF_MAXPAGESIZE 0x1000
15442 #define ELF_TARGET_ID NDS32_ELF_DATA
15444 #define TARGET_BIG_SYM nds32_elf32_be_vec
15445 #define TARGET_BIG_NAME "elf32-nds32be"
15446 #define TARGET_LITTLE_SYM nds32_elf32_le_vec
15447 #define TARGET_LITTLE_NAME "elf32-nds32le"
15449 #define elf_info_to_howto nds32_info_to_howto
15450 #define elf_info_to_howto_rel nds32_info_to_howto_rel
15452 #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create
15453 #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data
15454 #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data
15455 #define bfd_elf32_bfd_relax_section nds32_elf_relax_section
15456 #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags
15458 #define bfd_elf32_mkobject nds32_elf_mkobject
15459 #define elf_backend_action_discarded nds32_elf_action_discarded
15460 #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook
15461 #define elf_backend_check_relocs nds32_elf_check_relocs
15462 #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol
15463 #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections
15464 #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections
15465 #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol
15466 #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections
15467 #define elf_backend_relocate_section nds32_elf_relocate_section
15468 #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook
15469 #define elf_backend_grok_prstatus nds32_elf_grok_prstatus
15470 #define elf_backend_grok_psinfo nds32_elf_grok_psinfo
15471 #define elf_backend_reloc_type_class nds32_elf_reloc_type_class
15472 #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol
15473 #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook
15474 #define elf_backend_output_arch_syms nds32_elf_output_arch_syms
15475 #define elf_backend_object_p nds32_elf_object_p
15476 #define elf_backend_final_write_processing nds32_elf_final_write_processing
15477 #define elf_backend_special_sections nds32_elf_special_sections
15478 #define bfd_elf32_bfd_get_relocated_section_contents \
15479 nds32_elf_get_relocated_section_contents
15481 #define elf_backend_can_gc_sections 1
15482 #define elf_backend_can_refcount 1
15483 #define elf_backend_want_got_plt 1
15484 #define elf_backend_plt_readonly 1
15485 #define elf_backend_want_plt_sym 0
15486 #define elf_backend_got_header_size 12
15487 #define elf_backend_may_use_rel_p 1
15488 #define elf_backend_default_use_rela_p 1
15489 #define elf_backend_may_use_rela_p 1
15490 #define elf_backend_dtrel_excludes_plt 1
15492 #include "elf32-target.h"
15494 #undef ELF_MAXPAGESIZE
15495 #define ELF_MAXPAGESIZE 0x2000
15497 #undef TARGET_BIG_SYM
15498 #define TARGET_BIG_SYM nds32_elf32_linux_be_vec
15499 #undef TARGET_BIG_NAME
15500 #define TARGET_BIG_NAME "elf32-nds32be-linux"
15501 #undef TARGET_LITTLE_SYM
15502 #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec
15503 #undef TARGET_LITTLE_NAME
15504 #define TARGET_LITTLE_NAME "elf32-nds32le-linux"
15506 #define elf32_bed elf32_nds32_lin_bed
15508 #include "elf32-target.h"