| 1 | /* NDS32-specific support for 32-bit ELF. |
| 2 | Copyright (C) 2012-2016 Free Software Foundation, Inc. |
| 3 | Contributed by Andes Technology Corporation. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA |
| 20 | 02110-1301, USA. */ |
| 21 | |
| 22 | |
| 23 | #include "sysdep.h" |
| 24 | #include "bfd.h" |
| 25 | #include "bfd_stdint.h" |
| 26 | #include "bfdlink.h" |
| 27 | #include "libbfd.h" |
| 28 | #include "elf-bfd.h" |
| 29 | #include "libiberty.h" |
| 30 | #include "bfd_stdint.h" |
| 31 | #include "elf/nds32.h" |
| 32 | #include "opcode/nds32.h" |
| 33 | #include "elf32-nds32.h" |
| 34 | #include "opcode/cgen.h" |
| 35 | #include "../opcodes/nds32-opc.h" |
| 36 | |
| 37 | /* Relocation HOWTO functions. */ |
| 38 | static bfd_reloc_status_type nds32_elf_ignore_reloc |
| 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 40 | static bfd_reloc_status_type nds32_elf_9_pcrel_reloc |
| 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 42 | static bfd_reloc_status_type nds32_elf_hi20_reloc |
| 43 | (bfd *, arelent *, asymbol *, void *, |
| 44 | asection *, bfd *, char **); |
| 45 | static bfd_reloc_status_type nds32_elf_lo12_reloc |
| 46 | (bfd *, arelent *, asymbol *, void *, |
| 47 | asection *, bfd *, char **); |
| 48 | static bfd_reloc_status_type nds32_elf_generic_reloc |
| 49 | (bfd *, arelent *, asymbol *, void *, |
| 50 | asection *, bfd *, char **); |
| 51 | static bfd_reloc_status_type nds32_elf_sda15_reloc |
| 52 | (bfd *, arelent *, asymbol *, void *, |
| 53 | asection *, bfd *, char **); |
| 54 | |
| 55 | /* Helper functions for HOWTO. */ |
| 56 | static bfd_reloc_status_type nds32_elf_do_9_pcrel_reloc |
| 57 | (bfd *, reloc_howto_type *, asection *, bfd_byte *, bfd_vma, |
| 58 | asection *, bfd_vma, bfd_vma); |
| 59 | static void nds32_elf_relocate_hi20 |
| 60 | (bfd *, int, Elf_Internal_Rela *, Elf_Internal_Rela *, bfd_byte *, bfd_vma); |
| 61 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_table_lookup |
| 62 | (enum elf_nds32_reloc_type); |
| 63 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
| 64 | (bfd *, bfd_reloc_code_real_type); |
| 65 | |
| 66 | /* Target hooks. */ |
| 67 | static void nds32_info_to_howto_rel |
| 68 | (bfd *, arelent *, Elf_Internal_Rela *dst); |
| 69 | static void nds32_info_to_howto |
| 70 | (bfd *, arelent *, Elf_Internal_Rela *dst); |
| 71 | static bfd_boolean nds32_elf_add_symbol_hook |
| 72 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **, |
| 73 | flagword *, asection **, bfd_vma *); |
| 74 | static bfd_boolean nds32_elf_relocate_section |
| 75 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 76 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); |
| 77 | static bfd_boolean nds32_elf_object_p (bfd *); |
| 78 | static void nds32_elf_final_write_processing (bfd *, bfd_boolean); |
| 79 | static bfd_boolean nds32_elf_set_private_flags (bfd *, flagword); |
| 80 | static bfd_boolean nds32_elf_merge_private_bfd_data (bfd *, bfd *); |
| 81 | static bfd_boolean nds32_elf_print_private_bfd_data (bfd *, void *); |
| 82 | static bfd_boolean nds32_elf_gc_sweep_hook |
| 83 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
| 84 | static bfd_boolean nds32_elf_check_relocs |
| 85 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
| 86 | static asection *nds32_elf_gc_mark_hook |
| 87 | (asection *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 88 | struct elf_link_hash_entry *, Elf_Internal_Sym *); |
| 89 | static bfd_boolean nds32_elf_adjust_dynamic_symbol |
| 90 | (struct bfd_link_info *, struct elf_link_hash_entry *); |
| 91 | static bfd_boolean nds32_elf_size_dynamic_sections |
| 92 | (bfd *, struct bfd_link_info *); |
| 93 | static bfd_boolean nds32_elf_create_dynamic_sections |
| 94 | (bfd *, struct bfd_link_info *); |
| 95 | static bfd_boolean nds32_elf_finish_dynamic_sections |
| 96 | (bfd *, struct bfd_link_info *info); |
| 97 | static bfd_boolean nds32_elf_finish_dynamic_symbol |
| 98 | (bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 99 | Elf_Internal_Sym *); |
| 100 | static bfd_boolean nds32_elf_mkobject (bfd *); |
| 101 | |
| 102 | /* Nds32 helper functions. */ |
| 103 | static bfd_reloc_status_type nds32_elf_final_sda_base |
| 104 | (bfd *, struct bfd_link_info *, bfd_vma *, bfd_boolean); |
| 105 | static bfd_boolean allocate_dynrelocs (struct elf_link_hash_entry *, void *); |
| 106 | static bfd_boolean readonly_dynrelocs (struct elf_link_hash_entry *, void *); |
| 107 | static Elf_Internal_Rela *find_relocs_at_address |
| 108 | (Elf_Internal_Rela *, Elf_Internal_Rela *, |
| 109 | Elf_Internal_Rela *, enum elf_nds32_reloc_type); |
| 110 | static bfd_vma calculate_memory_address |
| 111 | (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); |
| 112 | static int nds32_get_section_contents (bfd *, asection *, |
| 113 | bfd_byte **, bfd_boolean); |
| 114 | static bfd_boolean nds32_elf_ex9_build_hash_table |
| 115 | (bfd *, asection *, struct bfd_link_info *); |
| 116 | static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *); |
| 117 | static void nds32_elf_ex9_import_table (struct bfd_link_info *); |
| 118 | static void nds32_elf_ex9_finish (struct bfd_link_info *); |
| 119 | static void nds32_elf_ex9_reloc_jmp (struct bfd_link_info *); |
| 120 | static void nds32_elf_get_insn_with_reg |
| 121 | (Elf_Internal_Rela *, uint32_t, uint32_t *); |
| 122 | static int nds32_get_local_syms (bfd *, asection *ATTRIBUTE_UNUSED, |
| 123 | Elf_Internal_Sym **); |
| 124 | static bfd_boolean nds32_elf_ex9_replace_instruction |
| 125 | (struct bfd_link_info *, bfd *, asection *); |
| 126 | static bfd_boolean nds32_elf_ifc_calc (struct bfd_link_info *, bfd *, |
| 127 | asection *); |
| 128 | static bfd_boolean nds32_elf_ifc_finish (struct bfd_link_info *); |
| 129 | static bfd_boolean nds32_elf_ifc_replace (struct bfd_link_info *); |
| 130 | static bfd_boolean nds32_elf_ifc_reloc (void); |
| 131 | static bfd_boolean nds32_relax_fp_as_gp |
| 132 | (struct bfd_link_info *link_info, bfd *abfd, asection *sec, |
| 133 | Elf_Internal_Rela *internal_relocs, Elf_Internal_Rela *irelend, |
| 134 | Elf_Internal_Sym *isymbuf); |
| 135 | static bfd_boolean nds32_fag_remove_unused_fpbase |
| 136 | (bfd *abfd, asection *sec, Elf_Internal_Rela *internal_relocs, |
| 137 | Elf_Internal_Rela *irelend); |
| 138 | static bfd_byte * |
| 139 | nds32_elf_get_relocated_section_contents (bfd *abfd, |
| 140 | struct bfd_link_info *link_info, |
| 141 | struct bfd_link_order *link_order, |
| 142 | bfd_byte *data, |
| 143 | bfd_boolean relocatable, |
| 144 | asymbol **symbols); |
| 145 | |
| 146 | enum |
| 147 | { |
| 148 | MACH_V1 = bfd_mach_n1h, |
| 149 | MACH_V2 = bfd_mach_n1h_v2, |
| 150 | MACH_V3 = bfd_mach_n1h_v3, |
| 151 | MACH_V3M = bfd_mach_n1h_v3m |
| 152 | }; |
| 153 | |
| 154 | #define MIN(a, b) ((a) > (b) ? (b) : (a)) |
| 155 | #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
| 156 | |
| 157 | /* The name of the dynamic interpreter. This is put in the .interp |
| 158 | section. */ |
| 159 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" |
| 160 | |
| 161 | /* The nop opcode we use. */ |
| 162 | #define NDS32_NOP32 0x40000009 |
| 163 | #define NDS32_NOP16 0x9200 |
| 164 | |
| 165 | /* The size in bytes of an entry in the procedure linkage table. */ |
| 166 | #define PLT_ENTRY_SIZE 24 |
| 167 | #define PLT_HEADER_SIZE 24 |
| 168 | |
| 169 | /* The first entry in a procedure linkage table are reserved, |
| 170 | and the initial contents are unimportant (we zero them out). |
| 171 | Subsequent entries look like this. */ |
| 172 | #define PLT0_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(.got+4) */ |
| 173 | #define PLT0_ENTRY_WORD1 0x58f78000 /* ori r15, r25, LO12(.got+4) */ |
| 174 | #define PLT0_ENTRY_WORD2 0x05178000 /* lwi r17, [r15+0] */ |
| 175 | #define PLT0_ENTRY_WORD3 0x04f78001 /* lwi r15, [r15+4] */ |
| 176 | #define PLT0_ENTRY_WORD4 0x4a003c00 /* jr r15 */ |
| 177 | |
| 178 | /* $ta is change to $r15 (from $r25). */ |
| 179 | #define PLT0_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[1]@GOT) */ |
| 180 | #define PLT0_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[1]@GOT) */ |
| 181 | #define PLT0_PIC_ENTRY_WORD2 0x40f7f400 /* add r15, gp, r15 */ |
| 182 | #define PLT0_PIC_ENTRY_WORD3 0x05178000 /* lwi r17, [r15+0] */ |
| 183 | #define PLT0_PIC_ENTRY_WORD4 0x04f78001 /* lwi r15, [r15+4] */ |
| 184 | #define PLT0_PIC_ENTRY_WORD5 0x4a003c00 /* jr r15 */ |
| 185 | |
| 186 | #define PLT_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(&got[n+3]) */ |
| 187 | #define PLT_ENTRY_WORD1 0x04f78000 /* lwi r15, r15, LO12(&got[n+3]) */ |
| 188 | #define PLT_ENTRY_WORD2 0x4a003c00 /* jr r15 */ |
| 189 | #define PLT_ENTRY_WORD3 0x45000000 /* movi r16, sizeof(RELA) * n */ |
| 190 | #define PLT_ENTRY_WORD4 0x48000000 /* j .plt0. */ |
| 191 | |
| 192 | #define PLT_PIC_ENTRY_WORD0 0x46f00000 /* sethi r15, HI20(got[n+3]@GOT) */ |
| 193 | #define PLT_PIC_ENTRY_WORD1 0x58f78000 /* ori r15, r15, LO12(got[n+3]@GOT) */ |
| 194 | #define PLT_PIC_ENTRY_WORD2 0x38febc02 /* lw r15, [gp+r15] */ |
| 195 | #define PLT_PIC_ENTRY_WORD3 0x4a003c00 /* jr r15 */ |
| 196 | #define PLT_PIC_ENTRY_WORD4 0x45000000 /* movi r16, sizeof(RELA) * n */ |
| 197 | #define PLT_PIC_ENTRY_WORD5 0x48000000 /* j .plt0 */ |
| 198 | |
| 199 | /* These are macros used to get the relocation accurate value. */ |
| 200 | #define ACCURATE_8BIT_S1 (0x100) |
| 201 | #define ACCURATE_U9BIT_S1 (0x400) |
| 202 | #define ACCURATE_12BIT_S1 (0x2000) |
| 203 | #define ACCURATE_14BIT_S1 (0x4000) |
| 204 | #define ACCURATE_19BIT (0x40000) |
| 205 | |
| 206 | /* These are macros used to get the relocation conservative value. */ |
| 207 | #define CONSERVATIVE_8BIT_S1 (0x100 - 4) |
| 208 | #define CONSERVATIVE_14BIT_S1 (0x4000 - 4) |
| 209 | #define CONSERVATIVE_16BIT_S1 (0x10000 - 4) |
| 210 | #define CONSERVATIVE_24BIT_S1 (0x1000000 - 4) |
| 211 | /* These must be more conservative because the address may be in |
| 212 | different segment. */ |
| 213 | #define CONSERVATIVE_15BIT (0x4000 - 0x1000) |
| 214 | #define CONSERVATIVE_15BIT_S1 (0x8000 - 0x1000) |
| 215 | #define CONSERVATIVE_15BIT_S2 (0x10000 - 0x1000) |
| 216 | #define CONSERVATIVE_19BIT (0x40000 - 0x1000) |
| 217 | #define CONSERVATIVE_20BIT (0x80000 - 0x1000) |
| 218 | |
| 219 | /* Size of small data/bss sections, used to calculate SDA_BASE. */ |
| 220 | static long got_size = 0; |
| 221 | static int is_SDA_BASE_set = 0; |
| 222 | static int is_ITB_BASE_set = 0; |
| 223 | |
| 224 | /* Convert ELF-VER in eflags to string for debugging purpose. */ |
| 225 | static const char *const nds32_elfver_strtab[] = |
| 226 | { |
| 227 | "ELF-1.2", |
| 228 | "ELF-1.3", |
| 229 | "ELF-1.4", |
| 230 | }; |
| 231 | |
| 232 | /* The nds32 linker needs to keep track of the number of relocs that it |
| 233 | decides to copy in check_relocs for each symbol. This is so that |
| 234 | it can discard PC relative relocs if it doesn't need them when |
| 235 | linking with -Bsymbolic. We store the information in a field |
| 236 | extending the regular ELF linker hash table. */ |
| 237 | |
| 238 | /* This structure keeps track of the number of PC relative relocs we |
| 239 | have copied for a given symbol. */ |
| 240 | |
| 241 | struct elf_nds32_pcrel_relocs_copied |
| 242 | { |
| 243 | /* Next section. */ |
| 244 | struct elf_nds32_pcrel_relocs_copied *next; |
| 245 | /* A section in dynobj. */ |
| 246 | asection *section; |
| 247 | /* Number of relocs copied in this section. */ |
| 248 | bfd_size_type count; |
| 249 | }; |
| 250 | |
| 251 | /* The sh linker needs to keep track of the number of relocs that it |
| 252 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 253 | This is so that it can later discard them if they are found to be |
| 254 | unnecessary. We store the information in a field extending the |
| 255 | regular ELF linker hash table. */ |
| 256 | |
| 257 | struct elf_nds32_dyn_relocs |
| 258 | { |
| 259 | struct elf_nds32_dyn_relocs *next; |
| 260 | |
| 261 | /* The input section of the reloc. */ |
| 262 | asection *sec; |
| 263 | |
| 264 | /* Total number of relocs copied for the input section. */ |
| 265 | bfd_size_type count; |
| 266 | |
| 267 | /* Number of pc-relative relocs copied for the input section. */ |
| 268 | bfd_size_type pc_count; |
| 269 | }; |
| 270 | |
| 271 | /* Nds32 ELF linker hash entry. */ |
| 272 | |
| 273 | struct elf_nds32_link_hash_entry |
| 274 | { |
| 275 | struct elf_link_hash_entry root; |
| 276 | |
| 277 | /* Track dynamic relocs copied for this symbol. */ |
| 278 | struct elf_nds32_dyn_relocs *dyn_relocs; |
| 279 | |
| 280 | /* For checking relocation type. */ |
| 281 | #define GOT_UNKNOWN 0 |
| 282 | #define GOT_NORMAL 1 |
| 283 | #define GOT_TLS_IE 2 |
| 284 | unsigned int tls_type; |
| 285 | }; |
| 286 | |
| 287 | /* Get the nds32 ELF linker hash table from a link_info structure. */ |
| 288 | |
| 289 | #define FP_BASE_NAME "_FP_BASE_" |
| 290 | static int check_start_export_sym = 0; |
| 291 | static size_t ex9_relax_size = 0; /* Save ex9 predicted reducing size. */ |
| 292 | |
| 293 | /* The offset for executable tls relaxation. */ |
| 294 | #define TP_OFFSET 0x0 |
| 295 | |
| 296 | struct elf_nds32_obj_tdata |
| 297 | { |
| 298 | struct elf_obj_tdata root; |
| 299 | |
| 300 | /* tls_type for each local got entry. */ |
| 301 | char *local_got_tls_type; |
| 302 | }; |
| 303 | |
| 304 | #define elf_nds32_tdata(bfd) \ |
| 305 | ((struct elf_nds32_obj_tdata *) (bfd)->tdata.any) |
| 306 | |
| 307 | #define elf32_nds32_local_got_tls_type(bfd) \ |
| 308 | (elf_nds32_tdata (bfd)->local_got_tls_type) |
| 309 | |
| 310 | #define elf32_nds32_hash_entry(ent) ((struct elf_nds32_link_hash_entry *)(ent)) |
| 311 | |
| 312 | static bfd_boolean |
| 313 | nds32_elf_mkobject (bfd *abfd) |
| 314 | { |
| 315 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_nds32_obj_tdata), |
| 316 | NDS32_ELF_DATA); |
| 317 | } |
| 318 | |
| 319 | /* Relocations used for relocation. */ |
| 320 | static reloc_howto_type nds32_elf_howto_table[] = |
| 321 | { |
| 322 | /* This reloc does nothing. */ |
| 323 | HOWTO (R_NDS32_NONE, /* type */ |
| 324 | 0, /* rightshift */ |
| 325 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 326 | 0, /* bitsize */ |
| 327 | FALSE, /* pc_relative */ |
| 328 | 0, /* bitpos */ |
| 329 | complain_overflow_dont, /* complain_on_overflow */ |
| 330 | bfd_elf_generic_reloc, /* special_function */ |
| 331 | "R_NDS32_NONE", /* name */ |
| 332 | FALSE, /* partial_inplace */ |
| 333 | 0, /* src_mask */ |
| 334 | 0, /* dst_mask */ |
| 335 | FALSE), /* pcrel_offset */ |
| 336 | |
| 337 | /* A 16 bit absolute relocation. */ |
| 338 | HOWTO (R_NDS32_16, /* type */ |
| 339 | 0, /* rightshift */ |
| 340 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 341 | 16, /* bitsize */ |
| 342 | FALSE, /* pc_relative */ |
| 343 | 0, /* bitpos */ |
| 344 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 345 | nds32_elf_generic_reloc, /* special_function */ |
| 346 | "R_NDS32_16", /* name */ |
| 347 | FALSE, /* partial_inplace */ |
| 348 | 0xffff, /* src_mask */ |
| 349 | 0xffff, /* dst_mask */ |
| 350 | FALSE), /* pcrel_offset */ |
| 351 | |
| 352 | /* A 32 bit absolute relocation. */ |
| 353 | HOWTO (R_NDS32_32, /* type */ |
| 354 | 0, /* rightshift */ |
| 355 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 356 | 32, /* bitsize */ |
| 357 | FALSE, /* pc_relative */ |
| 358 | 0, /* bitpos */ |
| 359 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 360 | nds32_elf_generic_reloc, /* special_function */ |
| 361 | "R_NDS32_32", /* name */ |
| 362 | FALSE, /* partial_inplace */ |
| 363 | 0xffffffff, /* src_mask */ |
| 364 | 0xffffffff, /* dst_mask */ |
| 365 | FALSE), /* pcrel_offset */ |
| 366 | |
| 367 | /* A 20 bit address. */ |
| 368 | HOWTO (R_NDS32_20, /* type */ |
| 369 | 0, /* rightshift */ |
| 370 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 371 | 20, /* bitsize */ |
| 372 | FALSE, /* pc_relative */ |
| 373 | 0, /* bitpos */ |
| 374 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 375 | nds32_elf_generic_reloc, /* special_function */ |
| 376 | "R_NDS32_20", /* name */ |
| 377 | FALSE, /* partial_inplace */ |
| 378 | 0xfffff, /* src_mask */ |
| 379 | 0xfffff, /* dst_mask */ |
| 380 | FALSE), /* pcrel_offset */ |
| 381 | |
| 382 | /* An PC Relative 9-bit relocation, shifted by 2. |
| 383 | This reloc is complicated because relocations are relative to pc & -4. |
| 384 | i.e. branches in the right insn slot use the address of the left insn |
| 385 | slot for pc. */ |
| 386 | /* ??? It's not clear whether this should have partial_inplace set or not. |
| 387 | Branch relaxing in the assembler can store the addend in the insn, |
| 388 | and if bfd_install_relocation gets called the addend may get added |
| 389 | again. */ |
| 390 | HOWTO (R_NDS32_9_PCREL, /* type */ |
| 391 | 1, /* rightshift */ |
| 392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 393 | 8, /* bitsize */ |
| 394 | TRUE, /* pc_relative */ |
| 395 | 0, /* bitpos */ |
| 396 | complain_overflow_signed, /* complain_on_overflow */ |
| 397 | nds32_elf_9_pcrel_reloc, /* special_function */ |
| 398 | "R_NDS32_9_PCREL", /* name */ |
| 399 | FALSE, /* partial_inplace */ |
| 400 | 0xff, /* src_mask */ |
| 401 | 0xff, /* dst_mask */ |
| 402 | TRUE), /* pcrel_offset */ |
| 403 | |
| 404 | /* A relative 15 bit relocation, right shifted by 1. */ |
| 405 | HOWTO (R_NDS32_15_PCREL, /* type */ |
| 406 | 1, /* rightshift */ |
| 407 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 408 | 14, /* bitsize */ |
| 409 | TRUE, /* pc_relative */ |
| 410 | 0, /* bitpos */ |
| 411 | complain_overflow_signed, /* complain_on_overflow */ |
| 412 | bfd_elf_generic_reloc, /* special_function */ |
| 413 | "R_NDS32_15_PCREL", /* name */ |
| 414 | FALSE, /* partial_inplace */ |
| 415 | 0x3fff, /* src_mask */ |
| 416 | 0x3fff, /* dst_mask */ |
| 417 | TRUE), /* pcrel_offset */ |
| 418 | |
| 419 | /* A relative 17 bit relocation, right shifted by 1. */ |
| 420 | HOWTO (R_NDS32_17_PCREL, /* type */ |
| 421 | 1, /* rightshift */ |
| 422 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 423 | 16, /* bitsize */ |
| 424 | TRUE, /* pc_relative */ |
| 425 | 0, /* bitpos */ |
| 426 | complain_overflow_signed, /* complain_on_overflow */ |
| 427 | bfd_elf_generic_reloc, /* special_function */ |
| 428 | "R_NDS32_17_PCREL", /* name */ |
| 429 | FALSE, /* partial_inplace */ |
| 430 | 0xffff, /* src_mask */ |
| 431 | 0xffff, /* dst_mask */ |
| 432 | TRUE), /* pcrel_offset */ |
| 433 | |
| 434 | /* A relative 25 bit relocation, right shifted by 1. */ |
| 435 | /* ??? It's not clear whether this should have partial_inplace set or not. |
| 436 | Branch relaxing in the assembler can store the addend in the insn, |
| 437 | and if bfd_install_relocation gets called the addend may get added |
| 438 | again. */ |
| 439 | HOWTO (R_NDS32_25_PCREL, /* type */ |
| 440 | 1, /* rightshift */ |
| 441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 442 | 24, /* bitsize */ |
| 443 | TRUE, /* pc_relative */ |
| 444 | 0, /* bitpos */ |
| 445 | complain_overflow_signed, /* complain_on_overflow */ |
| 446 | bfd_elf_generic_reloc, /* special_function */ |
| 447 | "R_NDS32_25_PCREL", /* name */ |
| 448 | FALSE, /* partial_inplace */ |
| 449 | 0xffffff, /* src_mask */ |
| 450 | 0xffffff, /* dst_mask */ |
| 451 | TRUE), /* pcrel_offset */ |
| 452 | |
| 453 | /* High 20 bits of address when lower 12 is or'd in. */ |
| 454 | HOWTO (R_NDS32_HI20, /* type */ |
| 455 | 12, /* rightshift */ |
| 456 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 457 | 20, /* bitsize */ |
| 458 | FALSE, /* pc_relative */ |
| 459 | 0, /* bitpos */ |
| 460 | complain_overflow_dont,/* complain_on_overflow */ |
| 461 | nds32_elf_hi20_reloc, /* special_function */ |
| 462 | "R_NDS32_HI20", /* name */ |
| 463 | FALSE, /* partial_inplace */ |
| 464 | 0x000fffff, /* src_mask */ |
| 465 | 0x000fffff, /* dst_mask */ |
| 466 | FALSE), /* pcrel_offset */ |
| 467 | |
| 468 | /* Lower 12 bits of address. */ |
| 469 | HOWTO (R_NDS32_LO12S3, /* type */ |
| 470 | 3, /* rightshift */ |
| 471 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 472 | 9, /* bitsize */ |
| 473 | FALSE, /* pc_relative */ |
| 474 | 0, /* bitpos */ |
| 475 | complain_overflow_dont,/* complain_on_overflow */ |
| 476 | nds32_elf_lo12_reloc, /* special_function */ |
| 477 | "R_NDS32_LO12S3", /* name */ |
| 478 | FALSE, /* partial_inplace */ |
| 479 | 0x000001ff, /* src_mask */ |
| 480 | 0x000001ff, /* dst_mask */ |
| 481 | FALSE), /* pcrel_offset */ |
| 482 | |
| 483 | /* Lower 12 bits of address. */ |
| 484 | HOWTO (R_NDS32_LO12S2, /* type */ |
| 485 | 2, /* rightshift */ |
| 486 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 487 | 10, /* bitsize */ |
| 488 | FALSE, /* pc_relative */ |
| 489 | 0, /* bitpos */ |
| 490 | complain_overflow_dont,/* complain_on_overflow */ |
| 491 | nds32_elf_lo12_reloc, /* special_function */ |
| 492 | "R_NDS32_LO12S2", /* name */ |
| 493 | FALSE, /* partial_inplace */ |
| 494 | 0x000003ff, /* src_mask */ |
| 495 | 0x000003ff, /* dst_mask */ |
| 496 | FALSE), /* pcrel_offset */ |
| 497 | |
| 498 | /* Lower 12 bits of address. */ |
| 499 | HOWTO (R_NDS32_LO12S1, /* type */ |
| 500 | 1, /* rightshift */ |
| 501 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 502 | 11, /* bitsize */ |
| 503 | FALSE, /* pc_relative */ |
| 504 | 0, /* bitpos */ |
| 505 | complain_overflow_dont,/* complain_on_overflow */ |
| 506 | nds32_elf_lo12_reloc, /* special_function */ |
| 507 | "R_NDS32_LO12S1", /* name */ |
| 508 | FALSE, /* partial_inplace */ |
| 509 | 0x000007ff, /* src_mask */ |
| 510 | 0x000007ff, /* dst_mask */ |
| 511 | FALSE), /* pcrel_offset */ |
| 512 | |
| 513 | /* Lower 12 bits of address. */ |
| 514 | HOWTO (R_NDS32_LO12S0, /* type */ |
| 515 | 0, /* rightshift */ |
| 516 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 517 | 12, /* bitsize */ |
| 518 | FALSE, /* pc_relative */ |
| 519 | 0, /* bitpos */ |
| 520 | complain_overflow_dont,/* complain_on_overflow */ |
| 521 | nds32_elf_lo12_reloc, /* special_function */ |
| 522 | "R_NDS32_LO12S0", /* name */ |
| 523 | FALSE, /* partial_inplace */ |
| 524 | 0x00000fff, /* src_mask */ |
| 525 | 0x00000fff, /* dst_mask */ |
| 526 | FALSE), /* pcrel_offset */ |
| 527 | |
| 528 | /* Small data area 15 bits offset. */ |
| 529 | HOWTO (R_NDS32_SDA15S3, /* type */ |
| 530 | 3, /* rightshift */ |
| 531 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 532 | 15, /* bitsize */ |
| 533 | FALSE, /* pc_relative */ |
| 534 | 0, /* bitpos */ |
| 535 | complain_overflow_signed, /* complain_on_overflow */ |
| 536 | nds32_elf_sda15_reloc, /* special_function */ |
| 537 | "R_NDS32_SDA15S3", /* name */ |
| 538 | FALSE, /* partial_inplace */ |
| 539 | 0x00007fff, /* src_mask */ |
| 540 | 0x00007fff, /* dst_mask */ |
| 541 | FALSE), /* pcrel_offset */ |
| 542 | |
| 543 | /* Small data area 15 bits offset. */ |
| 544 | HOWTO (R_NDS32_SDA15S2, /* type */ |
| 545 | 2, /* rightshift */ |
| 546 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 547 | 15, /* bitsize */ |
| 548 | FALSE, /* pc_relative */ |
| 549 | 0, /* bitpos */ |
| 550 | complain_overflow_signed, /* complain_on_overflow */ |
| 551 | nds32_elf_sda15_reloc, /* special_function */ |
| 552 | "R_NDS32_SDA15S2", /* name */ |
| 553 | FALSE, /* partial_inplace */ |
| 554 | 0x00007fff, /* src_mask */ |
| 555 | 0x00007fff, /* dst_mask */ |
| 556 | FALSE), /* pcrel_offset */ |
| 557 | |
| 558 | /* Small data area 15 bits offset. */ |
| 559 | HOWTO (R_NDS32_SDA15S1, /* type */ |
| 560 | 1, /* rightshift */ |
| 561 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 562 | 15, /* bitsize */ |
| 563 | FALSE, /* pc_relative */ |
| 564 | 0, /* bitpos */ |
| 565 | complain_overflow_signed, /* complain_on_overflow */ |
| 566 | nds32_elf_sda15_reloc, /* special_function */ |
| 567 | "R_NDS32_SDA15S1", /* name */ |
| 568 | FALSE, /* partial_inplace */ |
| 569 | 0x00007fff, /* src_mask */ |
| 570 | 0x00007fff, /* dst_mask */ |
| 571 | FALSE), /* pcrel_offset */ |
| 572 | |
| 573 | /* Small data area 15 bits offset. */ |
| 574 | HOWTO (R_NDS32_SDA15S0, /* type */ |
| 575 | 0, /* rightshift */ |
| 576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 577 | 15, /* bitsize */ |
| 578 | FALSE, /* pc_relative */ |
| 579 | 0, /* bitpos */ |
| 580 | complain_overflow_signed, /* complain_on_overflow */ |
| 581 | nds32_elf_sda15_reloc, /* special_function */ |
| 582 | "R_NDS32_SDA15S0", /* name */ |
| 583 | FALSE, /* partial_inplace */ |
| 584 | 0x00007fff, /* src_mask */ |
| 585 | 0x00007fff, /* dst_mask */ |
| 586 | FALSE), /* pcrel_offset */ |
| 587 | |
| 588 | /* GNU extension to record C++ vtable hierarchy */ |
| 589 | HOWTO (R_NDS32_GNU_VTINHERIT, /* type */ |
| 590 | 0, /* rightshift */ |
| 591 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 592 | 0, /* bitsize */ |
| 593 | FALSE, /* pc_relative */ |
| 594 | 0, /* bitpos */ |
| 595 | complain_overflow_dont,/* complain_on_overflow */ |
| 596 | NULL, /* special_function */ |
| 597 | "R_NDS32_GNU_VTINHERIT", /* name */ |
| 598 | FALSE, /* partial_inplace */ |
| 599 | 0, /* src_mask */ |
| 600 | 0, /* dst_mask */ |
| 601 | FALSE), /* pcrel_offset */ |
| 602 | |
| 603 | /* GNU extension to record C++ vtable member usage */ |
| 604 | HOWTO (R_NDS32_GNU_VTENTRY, /* type */ |
| 605 | 0, /* rightshift */ |
| 606 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 607 | 0, /* bitsize */ |
| 608 | FALSE, /* pc_relative */ |
| 609 | 0, /* bitpos */ |
| 610 | complain_overflow_dont,/* complain_on_overflow */ |
| 611 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 612 | "R_NDS32_GNU_VTENTRY", /* name */ |
| 613 | FALSE, /* partial_inplace */ |
| 614 | 0, /* src_mask */ |
| 615 | 0, /* dst_mask */ |
| 616 | FALSE), /* pcrel_offset */ |
| 617 | |
| 618 | /* A 16 bit absolute relocation. */ |
| 619 | HOWTO (R_NDS32_16_RELA, /* type */ |
| 620 | 0, /* rightshift */ |
| 621 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 622 | 16, /* bitsize */ |
| 623 | FALSE, /* pc_relative */ |
| 624 | 0, /* bitpos */ |
| 625 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 626 | bfd_elf_generic_reloc, /* special_function */ |
| 627 | "R_NDS32_16_RELA", /* name */ |
| 628 | FALSE, /* partial_inplace */ |
| 629 | 0xffff, /* src_mask */ |
| 630 | 0xffff, /* dst_mask */ |
| 631 | FALSE), /* pcrel_offset */ |
| 632 | |
| 633 | /* A 32 bit absolute relocation. */ |
| 634 | HOWTO (R_NDS32_32_RELA, /* type */ |
| 635 | 0, /* rightshift */ |
| 636 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 637 | 32, /* bitsize */ |
| 638 | FALSE, /* pc_relative */ |
| 639 | 0, /* bitpos */ |
| 640 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 641 | bfd_elf_generic_reloc, /* special_function */ |
| 642 | "R_NDS32_32_RELA", /* name */ |
| 643 | FALSE, /* partial_inplace */ |
| 644 | 0xffffffff, /* src_mask */ |
| 645 | 0xffffffff, /* dst_mask */ |
| 646 | FALSE), /* pcrel_offset */ |
| 647 | |
| 648 | /* A 20 bit address. */ |
| 649 | HOWTO (R_NDS32_20_RELA, /* type */ |
| 650 | 0, /* rightshift */ |
| 651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 652 | 20, /* bitsize */ |
| 653 | FALSE, /* pc_relative */ |
| 654 | 0, /* bitpos */ |
| 655 | complain_overflow_signed, /* complain_on_overflow */ |
| 656 | bfd_elf_generic_reloc, /* special_function */ |
| 657 | "R_NDS32_20_RELA", /* name */ |
| 658 | FALSE, /* partial_inplace */ |
| 659 | 0xfffff, /* src_mask */ |
| 660 | 0xfffff, /* dst_mask */ |
| 661 | FALSE), /* pcrel_offset */ |
| 662 | |
| 663 | HOWTO (R_NDS32_9_PCREL_RELA, /* type */ |
| 664 | 1, /* rightshift */ |
| 665 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 666 | 8, /* bitsize */ |
| 667 | TRUE, /* pc_relative */ |
| 668 | 0, /* bitpos */ |
| 669 | complain_overflow_signed, /* complain_on_overflow */ |
| 670 | bfd_elf_generic_reloc, /* special_function */ |
| 671 | "R_NDS32_9_PCREL_RELA",/* name */ |
| 672 | FALSE, /* partial_inplace */ |
| 673 | 0xff, /* src_mask */ |
| 674 | 0xff, /* dst_mask */ |
| 675 | TRUE), /* pcrel_offset */ |
| 676 | |
| 677 | /* A relative 15 bit relocation, right shifted by 1. */ |
| 678 | HOWTO (R_NDS32_15_PCREL_RELA, /* type */ |
| 679 | 1, /* rightshift */ |
| 680 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 681 | 14, /* bitsize */ |
| 682 | TRUE, /* pc_relative */ |
| 683 | 0, /* bitpos */ |
| 684 | complain_overflow_signed, /* complain_on_overflow */ |
| 685 | bfd_elf_generic_reloc, /* special_function */ |
| 686 | "R_NDS32_15_PCREL_RELA", /* name */ |
| 687 | FALSE, /* partial_inplace */ |
| 688 | 0x3fff, /* src_mask */ |
| 689 | 0x3fff, /* dst_mask */ |
| 690 | TRUE), /* pcrel_offset */ |
| 691 | |
| 692 | /* A relative 17 bit relocation, right shifted by 1. */ |
| 693 | HOWTO (R_NDS32_17_PCREL_RELA, /* type */ |
| 694 | 1, /* rightshift */ |
| 695 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 696 | 16, /* bitsize */ |
| 697 | TRUE, /* pc_relative */ |
| 698 | 0, /* bitpos */ |
| 699 | complain_overflow_signed, /* complain_on_overflow */ |
| 700 | bfd_elf_generic_reloc, /* special_function */ |
| 701 | "R_NDS32_17_PCREL_RELA", /* name */ |
| 702 | FALSE, /* partial_inplace */ |
| 703 | 0xffff, /* src_mask */ |
| 704 | 0xffff, /* dst_mask */ |
| 705 | TRUE), /* pcrel_offset */ |
| 706 | |
| 707 | /* A relative 25 bit relocation, right shifted by 2. */ |
| 708 | HOWTO (R_NDS32_25_PCREL_RELA, /* type */ |
| 709 | 1, /* rightshift */ |
| 710 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 711 | 24, /* bitsize */ |
| 712 | TRUE, /* pc_relative */ |
| 713 | 0, /* bitpos */ |
| 714 | complain_overflow_signed, /* complain_on_overflow */ |
| 715 | bfd_elf_generic_reloc, /* special_function */ |
| 716 | "R_NDS32_25_PCREL_RELA", /* name */ |
| 717 | FALSE, /* partial_inplace */ |
| 718 | 0xffffff, /* src_mask */ |
| 719 | 0xffffff, /* dst_mask */ |
| 720 | TRUE), /* pcrel_offset */ |
| 721 | |
| 722 | /* High 20 bits of address when lower 16 is or'd in. */ |
| 723 | HOWTO (R_NDS32_HI20_RELA, /* type */ |
| 724 | 12, /* rightshift */ |
| 725 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 726 | 20, /* bitsize */ |
| 727 | FALSE, /* pc_relative */ |
| 728 | 0, /* bitpos */ |
| 729 | complain_overflow_dont,/* complain_on_overflow */ |
| 730 | bfd_elf_generic_reloc, /* special_function */ |
| 731 | "R_NDS32_HI20_RELA", /* name */ |
| 732 | FALSE, /* partial_inplace */ |
| 733 | 0x000fffff, /* src_mask */ |
| 734 | 0x000fffff, /* dst_mask */ |
| 735 | FALSE), /* pcrel_offset */ |
| 736 | |
| 737 | /* Lower 12 bits of address. */ |
| 738 | HOWTO (R_NDS32_LO12S3_RELA, /* type */ |
| 739 | 3, /* rightshift */ |
| 740 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 741 | 9, /* bitsize */ |
| 742 | FALSE, /* pc_relative */ |
| 743 | 0, /* bitpos */ |
| 744 | complain_overflow_dont,/* complain_on_overflow */ |
| 745 | bfd_elf_generic_reloc, /* special_function */ |
| 746 | "R_NDS32_LO12S3_RELA", /* name */ |
| 747 | FALSE, /* partial_inplace */ |
| 748 | 0x000001ff, /* src_mask */ |
| 749 | 0x000001ff, /* dst_mask */ |
| 750 | FALSE), /* pcrel_offset */ |
| 751 | |
| 752 | /* Lower 12 bits of address. */ |
| 753 | HOWTO (R_NDS32_LO12S2_RELA, /* type */ |
| 754 | 2, /* rightshift */ |
| 755 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 756 | 10, /* bitsize */ |
| 757 | FALSE, /* pc_relative */ |
| 758 | 0, /* bitpos */ |
| 759 | complain_overflow_dont,/* complain_on_overflow */ |
| 760 | bfd_elf_generic_reloc, /* special_function */ |
| 761 | "R_NDS32_LO12S2_RELA", /* name */ |
| 762 | FALSE, /* partial_inplace */ |
| 763 | 0x000003ff, /* src_mask */ |
| 764 | 0x000003ff, /* dst_mask */ |
| 765 | FALSE), /* pcrel_offset */ |
| 766 | |
| 767 | /* Lower 12 bits of address. */ |
| 768 | HOWTO (R_NDS32_LO12S1_RELA, /* type */ |
| 769 | 1, /* rightshift */ |
| 770 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 771 | 11, /* bitsize */ |
| 772 | FALSE, /* pc_relative */ |
| 773 | 0, /* bitpos */ |
| 774 | complain_overflow_dont,/* complain_on_overflow */ |
| 775 | bfd_elf_generic_reloc, /* special_function */ |
| 776 | "R_NDS32_LO12S1_RELA", /* name */ |
| 777 | FALSE, /* partial_inplace */ |
| 778 | 0x000007ff, /* src_mask */ |
| 779 | 0x000007ff, /* dst_mask */ |
| 780 | FALSE), /* pcrel_offset */ |
| 781 | |
| 782 | /* Lower 12 bits of address. */ |
| 783 | HOWTO (R_NDS32_LO12S0_RELA, /* type */ |
| 784 | 0, /* rightshift */ |
| 785 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 786 | 12, /* bitsize */ |
| 787 | FALSE, /* pc_relative */ |
| 788 | 0, /* bitpos */ |
| 789 | complain_overflow_dont,/* complain_on_overflow */ |
| 790 | bfd_elf_generic_reloc, /* special_function */ |
| 791 | "R_NDS32_LO12S0_RELA", /* name */ |
| 792 | FALSE, /* partial_inplace */ |
| 793 | 0x00000fff, /* src_mask */ |
| 794 | 0x00000fff, /* dst_mask */ |
| 795 | FALSE), /* pcrel_offset */ |
| 796 | |
| 797 | /* Small data area 15 bits offset. */ |
| 798 | HOWTO (R_NDS32_SDA15S3_RELA, /* type */ |
| 799 | 3, /* rightshift */ |
| 800 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 801 | 15, /* bitsize */ |
| 802 | FALSE, /* pc_relative */ |
| 803 | 0, /* bitpos */ |
| 804 | complain_overflow_signed, /* complain_on_overflow */ |
| 805 | bfd_elf_generic_reloc, /* special_function */ |
| 806 | "R_NDS32_SDA15S3_RELA",/* name */ |
| 807 | FALSE, /* partial_inplace */ |
| 808 | 0x00007fff, /* src_mask */ |
| 809 | 0x00007fff, /* dst_mask */ |
| 810 | FALSE), /* pcrel_offset */ |
| 811 | |
| 812 | /* Small data area 15 bits offset. */ |
| 813 | HOWTO (R_NDS32_SDA15S2_RELA, /* type */ |
| 814 | 2, /* rightshift */ |
| 815 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 816 | 15, /* bitsize */ |
| 817 | FALSE, /* pc_relative */ |
| 818 | 0, /* bitpos */ |
| 819 | complain_overflow_signed, /* complain_on_overflow */ |
| 820 | bfd_elf_generic_reloc, /* special_function */ |
| 821 | "R_NDS32_SDA15S2_RELA",/* name */ |
| 822 | FALSE, /* partial_inplace */ |
| 823 | 0x00007fff, /* src_mask */ |
| 824 | 0x00007fff, /* dst_mask */ |
| 825 | FALSE), /* pcrel_offset */ |
| 826 | |
| 827 | HOWTO (R_NDS32_SDA15S1_RELA, /* type */ |
| 828 | 1, /* rightshift */ |
| 829 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 830 | 15, /* bitsize */ |
| 831 | FALSE, /* pc_relative */ |
| 832 | 0, /* bitpos */ |
| 833 | complain_overflow_signed, /* complain_on_overflow */ |
| 834 | bfd_elf_generic_reloc, /* special_function */ |
| 835 | "R_NDS32_SDA15S1_RELA",/* name */ |
| 836 | FALSE, /* partial_inplace */ |
| 837 | 0x00007fff, /* src_mask */ |
| 838 | 0x00007fff, /* dst_mask */ |
| 839 | FALSE), /* pcrel_offset */ |
| 840 | |
| 841 | HOWTO (R_NDS32_SDA15S0_RELA, /* type */ |
| 842 | 0, /* rightshift */ |
| 843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 844 | 15, /* bitsize */ |
| 845 | FALSE, /* pc_relative */ |
| 846 | 0, /* bitpos */ |
| 847 | complain_overflow_signed, /* complain_on_overflow */ |
| 848 | bfd_elf_generic_reloc, /* special_function */ |
| 849 | "R_NDS32_SDA15S0_RELA",/* name */ |
| 850 | FALSE, /* partial_inplace */ |
| 851 | 0x00007fff, /* src_mask */ |
| 852 | 0x00007fff, /* dst_mask */ |
| 853 | FALSE), /* pcrel_offset */ |
| 854 | |
| 855 | /* GNU extension to record C++ vtable hierarchy */ |
| 856 | HOWTO (R_NDS32_RELA_GNU_VTINHERIT, /* type */ |
| 857 | 0, /* rightshift */ |
| 858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 859 | 0, /* bitsize */ |
| 860 | FALSE, /* pc_relative */ |
| 861 | 0, /* bitpos */ |
| 862 | complain_overflow_dont,/* complain_on_overflow */ |
| 863 | NULL, /* special_function */ |
| 864 | "R_NDS32_RELA_GNU_VTINHERIT", /* name */ |
| 865 | FALSE, /* partial_inplace */ |
| 866 | 0, /* src_mask */ |
| 867 | 0, /* dst_mask */ |
| 868 | FALSE), /* pcrel_offset */ |
| 869 | |
| 870 | /* GNU extension to record C++ vtable member usage */ |
| 871 | HOWTO (R_NDS32_RELA_GNU_VTENTRY, /* type */ |
| 872 | 0, /* rightshift */ |
| 873 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 874 | 0, /* bitsize */ |
| 875 | FALSE, /* pc_relative */ |
| 876 | 0, /* bitpos */ |
| 877 | complain_overflow_dont,/* complain_on_overflow */ |
| 878 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 879 | "R_NDS32_RELA_GNU_VTENTRY", /* name */ |
| 880 | FALSE, /* partial_inplace */ |
| 881 | 0, /* src_mask */ |
| 882 | 0, /* dst_mask */ |
| 883 | FALSE), /* pcrel_offset */ |
| 884 | |
| 885 | /* Like R_NDS32_20, but referring to the GOT table entry for |
| 886 | the symbol. */ |
| 887 | HOWTO (R_NDS32_GOT20, /* type */ |
| 888 | 0, /* rightshift */ |
| 889 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 890 | 20, /* bitsize */ |
| 891 | FALSE, /* pc_relative */ |
| 892 | 0, /* bitpos */ |
| 893 | complain_overflow_signed, /* complain_on_overflow */ |
| 894 | bfd_elf_generic_reloc, /* special_function */ |
| 895 | "R_NDS32_GOT20", /* name */ |
| 896 | FALSE, /* partial_inplace */ |
| 897 | 0xfffff, /* src_mask */ |
| 898 | 0xfffff, /* dst_mask */ |
| 899 | FALSE), /* pcrel_offset */ |
| 900 | |
| 901 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table |
| 902 | entry for the symbol. */ |
| 903 | HOWTO (R_NDS32_25_PLTREL, /* type */ |
| 904 | 1, /* rightshift */ |
| 905 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 906 | 24, /* bitsize */ |
| 907 | TRUE, /* pc_relative */ |
| 908 | 0, /* bitpos */ |
| 909 | complain_overflow_signed, /* complain_on_overflow */ |
| 910 | bfd_elf_generic_reloc, /* special_function */ |
| 911 | "R_NDS32_25_PLTREL", /* name */ |
| 912 | FALSE, /* partial_inplace */ |
| 913 | 0xffffff, /* src_mask */ |
| 914 | 0xffffff, /* dst_mask */ |
| 915 | TRUE), /* pcrel_offset */ |
| 916 | |
| 917 | /* This is used only by the dynamic linker. The symbol should exist |
| 918 | both in the object being run and in some shared library. The |
| 919 | dynamic linker copies the data addressed by the symbol from the |
| 920 | shared library into the object, because the object being |
| 921 | run has to have the data at some particular address. */ |
| 922 | HOWTO (R_NDS32_COPY, /* type */ |
| 923 | 0, /* rightshift */ |
| 924 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 925 | 32, /* bitsize */ |
| 926 | FALSE, /* pc_relative */ |
| 927 | 0, /* bitpos */ |
| 928 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 929 | bfd_elf_generic_reloc, /* special_function */ |
| 930 | "R_NDS32_COPY", /* name */ |
| 931 | FALSE, /* partial_inplace */ |
| 932 | 0xffffffff, /* src_mask */ |
| 933 | 0xffffffff, /* dst_mask */ |
| 934 | FALSE), /* pcrel_offset */ |
| 935 | |
| 936 | /* Like R_NDS32_20, but used when setting global offset table |
| 937 | entries. */ |
| 938 | HOWTO (R_NDS32_GLOB_DAT, /* type */ |
| 939 | 0, /* rightshift */ |
| 940 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 941 | 32, /* bitsize */ |
| 942 | FALSE, /* pc_relative */ |
| 943 | 0, /* bitpos */ |
| 944 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 945 | bfd_elf_generic_reloc, /* special_function */ |
| 946 | "R_NDS32_GLOB_DAT", /* name */ |
| 947 | FALSE, /* partial_inplace */ |
| 948 | 0xffffffff, /* src_mask */ |
| 949 | 0xffffffff, /* dst_mask */ |
| 950 | FALSE), /* pcrel_offset */ |
| 951 | |
| 952 | /* Marks a procedure linkage table entry for a symbol. */ |
| 953 | HOWTO (R_NDS32_JMP_SLOT, /* type */ |
| 954 | 0, /* rightshift */ |
| 955 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 956 | 32, /* bitsize */ |
| 957 | FALSE, /* pc_relative */ |
| 958 | 0, /* bitpos */ |
| 959 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 960 | bfd_elf_generic_reloc, /* special_function */ |
| 961 | "R_NDS32_JMP_SLOT", /* name */ |
| 962 | FALSE, /* partial_inplace */ |
| 963 | 0xffffffff, /* src_mask */ |
| 964 | 0xffffffff, /* dst_mask */ |
| 965 | FALSE), /* pcrel_offset */ |
| 966 | |
| 967 | /* Used only by the dynamic linker. When the object is run, this |
| 968 | longword is set to the load address of the object, plus the |
| 969 | addend. */ |
| 970 | HOWTO (R_NDS32_RELATIVE, /* type */ |
| 971 | 0, /* rightshift */ |
| 972 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 973 | 32, /* bitsize */ |
| 974 | FALSE, /* pc_relative */ |
| 975 | 0, /* bitpos */ |
| 976 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 977 | bfd_elf_generic_reloc, /* special_function */ |
| 978 | "R_NDS32_RELATIVE", /* name */ |
| 979 | FALSE, /* partial_inplace */ |
| 980 | 0xffffffff, /* src_mask */ |
| 981 | 0xffffffff, /* dst_mask */ |
| 982 | FALSE), /* pcrel_offset */ |
| 983 | |
| 984 | HOWTO (R_NDS32_GOTOFF, /* type */ |
| 985 | 0, /* rightshift */ |
| 986 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 987 | 20, /* bitsize */ |
| 988 | FALSE, /* pc_relative */ |
| 989 | 0, /* bitpos */ |
| 990 | complain_overflow_signed, /* complain_on_overflow */ |
| 991 | bfd_elf_generic_reloc, /* special_function */ |
| 992 | "R_NDS32_GOTOFF", /* name */ |
| 993 | FALSE, /* partial_inplace */ |
| 994 | 0xfffff, /* src_mask */ |
| 995 | 0xfffff, /* dst_mask */ |
| 996 | FALSE), /* pcrel_offset */ |
| 997 | |
| 998 | /* An PC Relative 20-bit relocation used when setting PIC offset |
| 999 | table register. */ |
| 1000 | HOWTO (R_NDS32_GOTPC20, /* type */ |
| 1001 | 0, /* rightshift */ |
| 1002 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1003 | 20, /* bitsize */ |
| 1004 | TRUE, /* pc_relative */ |
| 1005 | 0, /* bitpos */ |
| 1006 | complain_overflow_signed, /* complain_on_overflow */ |
| 1007 | bfd_elf_generic_reloc, /* special_function */ |
| 1008 | "R_NDS32_GOTPC20", /* name */ |
| 1009 | FALSE, /* partial_inplace */ |
| 1010 | 0xfffff, /* src_mask */ |
| 1011 | 0xfffff, /* dst_mask */ |
| 1012 | TRUE), /* pcrel_offset */ |
| 1013 | |
| 1014 | /* Like R_NDS32_HI20, but referring to the GOT table entry for |
| 1015 | the symbol. */ |
| 1016 | HOWTO (R_NDS32_GOT_HI20, /* type */ |
| 1017 | 12, /* rightshift */ |
| 1018 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1019 | 20, /* bitsize */ |
| 1020 | FALSE, /* pc_relative */ |
| 1021 | 0, /* bitpos */ |
| 1022 | complain_overflow_dont,/* complain_on_overflow */ |
| 1023 | bfd_elf_generic_reloc, /* special_function */ |
| 1024 | "R_NDS32_GOT_HI20", /* name */ |
| 1025 | FALSE, /* partial_inplace */ |
| 1026 | 0x000fffff, /* src_mask */ |
| 1027 | 0x000fffff, /* dst_mask */ |
| 1028 | FALSE), /* pcrel_offset */ |
| 1029 | HOWTO (R_NDS32_GOT_LO12, /* type */ |
| 1030 | 0, /* rightshift */ |
| 1031 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1032 | 12, /* bitsize */ |
| 1033 | FALSE, /* pc_relative */ |
| 1034 | 0, /* bitpos */ |
| 1035 | complain_overflow_dont,/* complain_on_overflow */ |
| 1036 | bfd_elf_generic_reloc, /* special_function */ |
| 1037 | "R_NDS32_GOT_LO12", /* name */ |
| 1038 | FALSE, /* partial_inplace */ |
| 1039 | 0x00000fff, /* src_mask */ |
| 1040 | 0x00000fff, /* dst_mask */ |
| 1041 | FALSE), /* pcrel_offset */ |
| 1042 | |
| 1043 | /* An PC Relative relocation used when setting PIC offset table register. |
| 1044 | Like R_NDS32_HI20, but referring to the GOT table entry for |
| 1045 | the symbol. */ |
| 1046 | HOWTO (R_NDS32_GOTPC_HI20, /* type */ |
| 1047 | 12, /* rightshift */ |
| 1048 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1049 | 20, /* bitsize */ |
| 1050 | FALSE, /* pc_relative */ |
| 1051 | 0, /* bitpos */ |
| 1052 | complain_overflow_dont,/* complain_on_overflow */ |
| 1053 | bfd_elf_generic_reloc, /* special_function */ |
| 1054 | "R_NDS32_GOTPC_HI20", /* name */ |
| 1055 | FALSE, /* partial_inplace */ |
| 1056 | 0x000fffff, /* src_mask */ |
| 1057 | 0x000fffff, /* dst_mask */ |
| 1058 | TRUE), /* pcrel_offset */ |
| 1059 | HOWTO (R_NDS32_GOTPC_LO12, /* type */ |
| 1060 | 0, /* rightshift */ |
| 1061 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1062 | 12, /* bitsize */ |
| 1063 | FALSE, /* pc_relative */ |
| 1064 | 0, /* bitpos */ |
| 1065 | complain_overflow_dont, /* complain_on_overflow */ |
| 1066 | bfd_elf_generic_reloc, /* special_function */ |
| 1067 | "R_NDS32_GOTPC_LO12", /* name */ |
| 1068 | FALSE, /* partial_inplace */ |
| 1069 | 0x00000fff, /* src_mask */ |
| 1070 | 0x00000fff, /* dst_mask */ |
| 1071 | TRUE), /* pcrel_offset */ |
| 1072 | |
| 1073 | HOWTO (R_NDS32_GOTOFF_HI20, /* type */ |
| 1074 | 12, /* rightshift */ |
| 1075 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1076 | 20, /* bitsize */ |
| 1077 | FALSE, /* pc_relative */ |
| 1078 | 0, /* bitpos */ |
| 1079 | complain_overflow_dont,/* complain_on_overflow */ |
| 1080 | bfd_elf_generic_reloc, /* special_function */ |
| 1081 | "R_NDS32_GOTOFF_HI20", /* name */ |
| 1082 | FALSE, /* partial_inplace */ |
| 1083 | 0x000fffff, /* src_mask */ |
| 1084 | 0x000fffff, /* dst_mask */ |
| 1085 | FALSE), /* pcrel_offset */ |
| 1086 | HOWTO (R_NDS32_GOTOFF_LO12, /* type */ |
| 1087 | 0, /* rightshift */ |
| 1088 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1089 | 12, /* bitsize */ |
| 1090 | FALSE, /* pc_relative */ |
| 1091 | 0, /* bitpos */ |
| 1092 | complain_overflow_dont,/* complain_on_overflow */ |
| 1093 | bfd_elf_generic_reloc, /* special_function */ |
| 1094 | "R_NDS32_GOTOFF_LO12", /* name */ |
| 1095 | FALSE, /* partial_inplace */ |
| 1096 | 0x00000fff, /* src_mask */ |
| 1097 | 0x00000fff, /* dst_mask */ |
| 1098 | FALSE), /* pcrel_offset */ |
| 1099 | |
| 1100 | /* Alignment hint for relaxable instruction. This is used with |
| 1101 | R_NDS32_LABEL as a pair. Relax this instruction from 4 bytes to 2 |
| 1102 | in order to make next label aligned on word boundary. */ |
| 1103 | HOWTO (R_NDS32_INSN16, /* type */ |
| 1104 | 0, /* rightshift */ |
| 1105 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1106 | 32, /* bitsize */ |
| 1107 | FALSE, /* pc_relative */ |
| 1108 | 0, /* bitpos */ |
| 1109 | complain_overflow_dont,/* complain_on_overflow */ |
| 1110 | nds32_elf_ignore_reloc,/* special_function */ |
| 1111 | "R_NDS32_INSN16", /* name */ |
| 1112 | FALSE, /* partial_inplace */ |
| 1113 | 0x00000fff, /* src_mask */ |
| 1114 | 0x00000fff, /* dst_mask */ |
| 1115 | FALSE), /* pcrel_offset */ |
| 1116 | |
| 1117 | /* Alignment hint for label. */ |
| 1118 | HOWTO (R_NDS32_LABEL, /* type */ |
| 1119 | 0, /* rightshift */ |
| 1120 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1121 | 32, /* bitsize */ |
| 1122 | FALSE, /* pc_relative */ |
| 1123 | 0, /* bitpos */ |
| 1124 | complain_overflow_dont,/* complain_on_overflow */ |
| 1125 | nds32_elf_ignore_reloc,/* special_function */ |
| 1126 | "R_NDS32_LABEL", /* name */ |
| 1127 | FALSE, /* partial_inplace */ |
| 1128 | 0xffffffff, /* src_mask */ |
| 1129 | 0xffffffff, /* dst_mask */ |
| 1130 | FALSE), /* pcrel_offset */ |
| 1131 | |
| 1132 | /* Relax hint for unconditional call sequence */ |
| 1133 | HOWTO (R_NDS32_LONGCALL1, /* type */ |
| 1134 | 0, /* rightshift */ |
| 1135 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1136 | 32, /* bitsize */ |
| 1137 | FALSE, /* pc_relative */ |
| 1138 | 0, /* bitpos */ |
| 1139 | complain_overflow_dont,/* complain_on_overflow */ |
| 1140 | nds32_elf_ignore_reloc,/* special_function */ |
| 1141 | "R_NDS32_LONGCALL1", /* name */ |
| 1142 | FALSE, /* partial_inplace */ |
| 1143 | 0xffffffff, /* src_mask */ |
| 1144 | 0xffffffff, /* dst_mask */ |
| 1145 | FALSE), /* pcrel_offset */ |
| 1146 | |
| 1147 | /* Relax hint for conditional call sequence. */ |
| 1148 | HOWTO (R_NDS32_LONGCALL2, /* type */ |
| 1149 | 0, /* rightshift */ |
| 1150 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1151 | 32, /* bitsize */ |
| 1152 | FALSE, /* pc_relative */ |
| 1153 | 0, /* bitpos */ |
| 1154 | complain_overflow_dont,/* complain_on_overflow */ |
| 1155 | nds32_elf_ignore_reloc,/* special_function */ |
| 1156 | "R_NDS32_LONGCALL2", /* name */ |
| 1157 | FALSE, /* partial_inplace */ |
| 1158 | 0xffffffff, /* src_mask */ |
| 1159 | 0xffffffff, /* dst_mask */ |
| 1160 | FALSE), /* pcrel_offset */ |
| 1161 | |
| 1162 | /* Relax hint for conditional call sequence. */ |
| 1163 | HOWTO (R_NDS32_LONGCALL3, /* type */ |
| 1164 | 0, /* rightshift */ |
| 1165 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1166 | 32, /* bitsize */ |
| 1167 | FALSE, /* pc_relative */ |
| 1168 | 0, /* bitpos */ |
| 1169 | complain_overflow_dont,/* complain_on_overflow */ |
| 1170 | nds32_elf_ignore_reloc,/* special_function */ |
| 1171 | "R_NDS32_LONGCALL3", /* name */ |
| 1172 | FALSE, /* partial_inplace */ |
| 1173 | 0xffffffff, /* src_mask */ |
| 1174 | 0xffffffff, /* dst_mask */ |
| 1175 | FALSE), /* pcrel_offset */ |
| 1176 | |
| 1177 | /* Relax hint for unconditional branch sequence. */ |
| 1178 | HOWTO (R_NDS32_LONGJUMP1, /* type */ |
| 1179 | 0, /* rightshift */ |
| 1180 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1181 | 32, /* bitsize */ |
| 1182 | FALSE, /* pc_relative */ |
| 1183 | 0, /* bitpos */ |
| 1184 | complain_overflow_dont,/* complain_on_overflow */ |
| 1185 | nds32_elf_ignore_reloc,/* special_function */ |
| 1186 | "R_NDS32_LONGJUMP1", /* name */ |
| 1187 | FALSE, /* partial_inplace */ |
| 1188 | 0xffffffff, /* src_mask */ |
| 1189 | 0xffffffff, /* dst_mask */ |
| 1190 | FALSE), /* pcrel_offset */ |
| 1191 | |
| 1192 | /* Relax hint for conditional branch sequence. */ |
| 1193 | HOWTO (R_NDS32_LONGJUMP2, /* type */ |
| 1194 | 0, /* rightshift */ |
| 1195 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1196 | 32, /* bitsize */ |
| 1197 | FALSE, /* pc_relative */ |
| 1198 | 0, /* bitpos */ |
| 1199 | complain_overflow_dont,/* complain_on_overflow */ |
| 1200 | nds32_elf_ignore_reloc,/* special_function */ |
| 1201 | "R_NDS32_LONGJUMP2", /* name */ |
| 1202 | FALSE, /* partial_inplace */ |
| 1203 | 0xffffffff, /* src_mask */ |
| 1204 | 0xffffffff, /* dst_mask */ |
| 1205 | FALSE), /* pcrel_offset */ |
| 1206 | |
| 1207 | /* Relax hint for conditional branch sequence. */ |
| 1208 | HOWTO (R_NDS32_LONGJUMP3, /* type */ |
| 1209 | 0, /* rightshift */ |
| 1210 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1211 | 32, /* bitsize */ |
| 1212 | FALSE, /* pc_relative */ |
| 1213 | 0, /* bitpos */ |
| 1214 | complain_overflow_dont,/* complain_on_overflow */ |
| 1215 | nds32_elf_ignore_reloc,/* special_function */ |
| 1216 | "R_NDS32_LONGJUMP3", /* name */ |
| 1217 | FALSE, /* partial_inplace */ |
| 1218 | 0xffffffff, /* src_mask */ |
| 1219 | 0xffffffff, /* dst_mask */ |
| 1220 | FALSE), /* pcrel_offset */ |
| 1221 | |
| 1222 | /* Relax hint for load/store sequence. */ |
| 1223 | HOWTO (R_NDS32_LOADSTORE, /* type */ |
| 1224 | 0, /* rightshift */ |
| 1225 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1226 | 32, /* bitsize */ |
| 1227 | FALSE, /* pc_relative */ |
| 1228 | 0, /* bitpos */ |
| 1229 | complain_overflow_dont,/* complain_on_overflow */ |
| 1230 | nds32_elf_ignore_reloc,/* special_function */ |
| 1231 | "R_NDS32_LOADSTORE", /* name */ |
| 1232 | FALSE, /* partial_inplace */ |
| 1233 | 0xffffffff, /* src_mask */ |
| 1234 | 0xffffffff, /* dst_mask */ |
| 1235 | FALSE), /* pcrel_offset */ |
| 1236 | |
| 1237 | /* Relax hint for load/store sequence. */ |
| 1238 | HOWTO (R_NDS32_9_FIXED_RELA, /* type */ |
| 1239 | 0, /* rightshift */ |
| 1240 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1241 | 16, /* bitsize */ |
| 1242 | FALSE, /* pc_relative */ |
| 1243 | 0, /* bitpos */ |
| 1244 | complain_overflow_dont,/* complain_on_overflow */ |
| 1245 | nds32_elf_ignore_reloc,/* special_function */ |
| 1246 | "R_NDS32_9_FIXED_RELA",/* name */ |
| 1247 | FALSE, /* partial_inplace */ |
| 1248 | 0x000000ff, /* src_mask */ |
| 1249 | 0x000000ff, /* dst_mask */ |
| 1250 | FALSE), /* pcrel_offset */ |
| 1251 | |
| 1252 | /* Relax hint for load/store sequence. */ |
| 1253 | HOWTO (R_NDS32_15_FIXED_RELA, /* type */ |
| 1254 | 0, /* rightshift */ |
| 1255 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1256 | 32, /* bitsize */ |
| 1257 | FALSE, /* pc_relative */ |
| 1258 | 0, /* bitpos */ |
| 1259 | complain_overflow_dont,/* complain_on_overflow */ |
| 1260 | nds32_elf_ignore_reloc,/* special_function */ |
| 1261 | "R_NDS32_15_FIXED_RELA", /* name */ |
| 1262 | FALSE, /* partial_inplace */ |
| 1263 | 0x00003fff, /* src_mask */ |
| 1264 | 0x00003fff, /* dst_mask */ |
| 1265 | FALSE), /* pcrel_offset */ |
| 1266 | |
| 1267 | /* Relax hint for load/store sequence. */ |
| 1268 | HOWTO (R_NDS32_17_FIXED_RELA, /* type */ |
| 1269 | 0, /* rightshift */ |
| 1270 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1271 | 32, /* bitsize */ |
| 1272 | FALSE, /* pc_relative */ |
| 1273 | 0, /* bitpos */ |
| 1274 | complain_overflow_dont,/* complain_on_overflow */ |
| 1275 | nds32_elf_ignore_reloc,/* special_function */ |
| 1276 | "R_NDS32_17_FIXED_RELA", /* name */ |
| 1277 | FALSE, /* partial_inplace */ |
| 1278 | 0x0000ffff, /* src_mask */ |
| 1279 | 0x0000ffff, /* dst_mask */ |
| 1280 | FALSE), /* pcrel_offset */ |
| 1281 | |
| 1282 | /* Relax hint for load/store sequence. */ |
| 1283 | HOWTO (R_NDS32_25_FIXED_RELA, /* type */ |
| 1284 | 0, /* rightshift */ |
| 1285 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1286 | 32, /* bitsize */ |
| 1287 | FALSE, /* pc_relative */ |
| 1288 | 0, /* bitpos */ |
| 1289 | complain_overflow_dont,/* complain_on_overflow */ |
| 1290 | nds32_elf_ignore_reloc,/* special_function */ |
| 1291 | "R_NDS32_25_FIXED_RELA", /* name */ |
| 1292 | FALSE, /* partial_inplace */ |
| 1293 | 0x00ffffff, /* src_mask */ |
| 1294 | 0x00ffffff, /* dst_mask */ |
| 1295 | FALSE), /* pcrel_offset */ |
| 1296 | |
| 1297 | /* High 20 bits of PLT symbol offset relative to PC. */ |
| 1298 | HOWTO (R_NDS32_PLTREL_HI20, /* type */ |
| 1299 | 12, /* rightshift */ |
| 1300 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1301 | 20, /* bitsize */ |
| 1302 | FALSE, /* pc_relative */ |
| 1303 | 0, /* bitpos */ |
| 1304 | complain_overflow_dont,/* complain_on_overflow */ |
| 1305 | bfd_elf_generic_reloc, /* special_function */ |
| 1306 | "R_NDS32_PLTREL_HI20", /* name */ |
| 1307 | FALSE, /* partial_inplace */ |
| 1308 | 0x000fffff, /* src_mask */ |
| 1309 | 0x000fffff, /* dst_mask */ |
| 1310 | FALSE), /* pcrel_offset */ |
| 1311 | |
| 1312 | /* Low 12 bits of PLT symbol offset relative to PC. */ |
| 1313 | HOWTO (R_NDS32_PLTREL_LO12, /* type */ |
| 1314 | 0, /* rightshift */ |
| 1315 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1316 | 12, /* bitsize */ |
| 1317 | FALSE, /* pc_relative */ |
| 1318 | 0, /* bitpos */ |
| 1319 | complain_overflow_dont,/* complain_on_overflow */ |
| 1320 | bfd_elf_generic_reloc, /* special_function */ |
| 1321 | "R_NDS32_PLTREL_LO12", /* name */ |
| 1322 | FALSE, /* partial_inplace */ |
| 1323 | 0x00000fff, /* src_mask */ |
| 1324 | 0x00000fff, /* dst_mask */ |
| 1325 | FALSE), /* pcrel_offset */ |
| 1326 | |
| 1327 | /* High 20 bits of PLT symbol offset relative to GOT (GP). */ |
| 1328 | HOWTO (R_NDS32_PLT_GOTREL_HI20, /* type */ |
| 1329 | 12, /* rightshift */ |
| 1330 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1331 | 20, /* bitsize */ |
| 1332 | FALSE, /* pc_relative */ |
| 1333 | 0, /* bitpos */ |
| 1334 | complain_overflow_dont,/* complain_on_overflow */ |
| 1335 | bfd_elf_generic_reloc, /* special_function */ |
| 1336 | "R_NDS32_PLT_GOTREL_HI20", /* name */ |
| 1337 | FALSE, /* partial_inplace */ |
| 1338 | 0x000fffff, /* src_mask */ |
| 1339 | 0x000fffff, /* dst_mask */ |
| 1340 | FALSE), /* pcrel_offset */ |
| 1341 | |
| 1342 | /* Low 12 bits of PLT symbol offset relative to GOT (GP). */ |
| 1343 | HOWTO (R_NDS32_PLT_GOTREL_LO12, /* type */ |
| 1344 | 0, /* rightshift */ |
| 1345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1346 | 12, /* bitsize */ |
| 1347 | FALSE, /* pc_relative */ |
| 1348 | 0, /* bitpos */ |
| 1349 | complain_overflow_dont,/* complain_on_overflow */ |
| 1350 | bfd_elf_generic_reloc, /* special_function */ |
| 1351 | "R_NDS32_PLT_GOTREL_LO12", /* name */ |
| 1352 | FALSE, /* partial_inplace */ |
| 1353 | 0x00000fff, /* src_mask */ |
| 1354 | 0x00000fff, /* dst_mask */ |
| 1355 | FALSE), /* pcrel_offset */ |
| 1356 | |
| 1357 | /* Small data area 12 bits offset. */ |
| 1358 | HOWTO (R_NDS32_SDA12S2_DP_RELA, /* type */ |
| 1359 | 2, /* rightshift */ |
| 1360 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1361 | 12, /* bitsize */ |
| 1362 | FALSE, /* pc_relative */ |
| 1363 | 0, /* bitpos */ |
| 1364 | complain_overflow_signed, /* complain_on_overflow */ |
| 1365 | bfd_elf_generic_reloc, /* special_function */ |
| 1366 | "R_NDS32_SDA12S2_DP_RELA", /* name */ |
| 1367 | FALSE, /* partial_inplace */ |
| 1368 | 0x00000fff, /* src_mask */ |
| 1369 | 0x00000fff, /* dst_mask */ |
| 1370 | FALSE), /* pcrel_offset */ |
| 1371 | |
| 1372 | /* Small data area 12 bits offset. */ |
| 1373 | HOWTO (R_NDS32_SDA12S2_SP_RELA, /* type */ |
| 1374 | 2, /* rightshift */ |
| 1375 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1376 | 12, /* bitsize */ |
| 1377 | FALSE, /* pc_relative */ |
| 1378 | 0, /* bitpos */ |
| 1379 | complain_overflow_signed, /* complain_on_overflow */ |
| 1380 | bfd_elf_generic_reloc, /* special_function */ |
| 1381 | "R_NDS32_SDA12S2_SP_RELA", /* name */ |
| 1382 | FALSE, /* partial_inplace */ |
| 1383 | 0x00000fff, /* src_mask */ |
| 1384 | 0x00000fff, /* dst_mask */ |
| 1385 | FALSE), /* pcrel_offset */ |
| 1386 | /* Lower 12 bits of address. */ |
| 1387 | |
| 1388 | HOWTO (R_NDS32_LO12S2_DP_RELA, /* type */ |
| 1389 | 2, /* rightshift */ |
| 1390 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1391 | 10, /* bitsize */ |
| 1392 | FALSE, /* pc_relative */ |
| 1393 | 0, /* bitpos */ |
| 1394 | complain_overflow_dont,/* complain_on_overflow */ |
| 1395 | bfd_elf_generic_reloc, /* special_function */ |
| 1396 | "R_NDS32_LO12S2_DP_RELA", /* name */ |
| 1397 | FALSE, /* partial_inplace */ |
| 1398 | 0x000003ff, /* src_mask */ |
| 1399 | 0x000003ff, /* dst_mask */ |
| 1400 | FALSE), /* pcrel_offset */ |
| 1401 | |
| 1402 | /* Lower 12 bits of address. */ |
| 1403 | HOWTO (R_NDS32_LO12S2_SP_RELA,/* type */ |
| 1404 | 2, /* rightshift */ |
| 1405 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1406 | 10, /* bitsize */ |
| 1407 | FALSE, /* pc_relative */ |
| 1408 | 0, /* bitpos */ |
| 1409 | complain_overflow_dont,/* complain_on_overflow */ |
| 1410 | bfd_elf_generic_reloc, /* special_function */ |
| 1411 | "R_NDS32_LO12S2_SP_RELA", /* name */ |
| 1412 | FALSE, /* partial_inplace */ |
| 1413 | 0x000003ff, /* src_mask */ |
| 1414 | 0x000003ff, /* dst_mask */ |
| 1415 | FALSE), /* pcrel_offset */ |
| 1416 | /* Lower 12 bits of address. Special identity for or case. */ |
| 1417 | HOWTO (R_NDS32_LO12S0_ORI_RELA, /* type */ |
| 1418 | 0, /* rightshift */ |
| 1419 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1420 | 12, /* bitsize */ |
| 1421 | FALSE, /* pc_relative */ |
| 1422 | 0, /* bitpos */ |
| 1423 | complain_overflow_dont,/* complain_on_overflow */ |
| 1424 | bfd_elf_generic_reloc, /* special_function */ |
| 1425 | "R_NDS32_LO12S0_ORI_RELA", /* name */ |
| 1426 | FALSE, /* partial_inplace */ |
| 1427 | 0x00000fff, /* src_mask */ |
| 1428 | 0x00000fff, /* dst_mask */ |
| 1429 | FALSE), /* pcrel_offset */ |
| 1430 | /* Small data area 19 bits offset. */ |
| 1431 | HOWTO (R_NDS32_SDA16S3_RELA, /* type */ |
| 1432 | 3, /* rightshift */ |
| 1433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1434 | 16, /* bitsize */ |
| 1435 | FALSE, /* pc_relative */ |
| 1436 | 0, /* bitpos */ |
| 1437 | complain_overflow_signed, /* complain_on_overflow */ |
| 1438 | bfd_elf_generic_reloc, /* special_function */ |
| 1439 | "R_NDS32_SDA16S3_RELA",/* name */ |
| 1440 | FALSE, /* partial_inplace */ |
| 1441 | 0x0000ffff, /* src_mask */ |
| 1442 | 0x0000ffff, /* dst_mask */ |
| 1443 | FALSE), /* pcrel_offset */ |
| 1444 | |
| 1445 | /* Small data area 15 bits offset. */ |
| 1446 | HOWTO (R_NDS32_SDA17S2_RELA, /* type */ |
| 1447 | 2, /* rightshift */ |
| 1448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1449 | 17, /* bitsize */ |
| 1450 | FALSE, /* pc_relative */ |
| 1451 | 0, /* bitpos */ |
| 1452 | complain_overflow_signed, /* complain_on_overflow */ |
| 1453 | bfd_elf_generic_reloc, /* special_function */ |
| 1454 | "R_NDS32_SDA17S2_RELA",/* name */ |
| 1455 | FALSE, /* partial_inplace */ |
| 1456 | 0x0001ffff, /* src_mask */ |
| 1457 | 0x0001ffff, /* dst_mask */ |
| 1458 | FALSE), /* pcrel_offset */ |
| 1459 | |
| 1460 | HOWTO (R_NDS32_SDA18S1_RELA, /* type */ |
| 1461 | 1, /* rightshift */ |
| 1462 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1463 | 18, /* bitsize */ |
| 1464 | FALSE, /* pc_relative */ |
| 1465 | 0, /* bitpos */ |
| 1466 | complain_overflow_signed, /* complain_on_overflow */ |
| 1467 | bfd_elf_generic_reloc, /* special_function */ |
| 1468 | "R_NDS32_SDA18S1_RELA",/* name */ |
| 1469 | FALSE, /* partial_inplace */ |
| 1470 | 0x0003ffff, /* src_mask */ |
| 1471 | 0x0003ffff, /* dst_mask */ |
| 1472 | FALSE), /* pcrel_offset */ |
| 1473 | |
| 1474 | HOWTO (R_NDS32_SDA19S0_RELA, /* type */ |
| 1475 | 0, /* rightshift */ |
| 1476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1477 | 19, /* bitsize */ |
| 1478 | FALSE, /* pc_relative */ |
| 1479 | 0, /* bitpos */ |
| 1480 | complain_overflow_signed, /* complain_on_overflow */ |
| 1481 | bfd_elf_generic_reloc, /* special_function */ |
| 1482 | "R_NDS32_SDA19S0_RELA",/* name */ |
| 1483 | FALSE, /* partial_inplace */ |
| 1484 | 0x0007ffff, /* src_mask */ |
| 1485 | 0x0007ffff, /* dst_mask */ |
| 1486 | FALSE), /* pcrel_offset */ |
| 1487 | HOWTO (R_NDS32_DWARF2_OP1_RELA, /* type */ |
| 1488 | 0, /* rightshift */ |
| 1489 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1490 | 8, /* bitsize */ |
| 1491 | FALSE, /* pc_relative */ |
| 1492 | 0, /* bitpos */ |
| 1493 | complain_overflow_dont,/* complain_on_overflow */ |
| 1494 | nds32_elf_ignore_reloc,/* special_function */ |
| 1495 | "R_NDS32_DWARF2_OP1_RELA", /* name */ |
| 1496 | FALSE, /* partial_inplace */ |
| 1497 | 0xff, /* src_mask */ |
| 1498 | 0xff, /* dst_mask */ |
| 1499 | FALSE), /* pcrel_offset */ |
| 1500 | HOWTO (R_NDS32_DWARF2_OP2_RELA, /* type */ |
| 1501 | 0, /* rightshift */ |
| 1502 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1503 | 16, /* bitsize */ |
| 1504 | FALSE, /* pc_relative */ |
| 1505 | 0, /* bitpos */ |
| 1506 | complain_overflow_dont,/* complain_on_overflow */ |
| 1507 | nds32_elf_ignore_reloc,/* special_function */ |
| 1508 | "R_NDS32_DWARF2_OP2_RELA", /* name */ |
| 1509 | FALSE, /* partial_inplace */ |
| 1510 | 0xffff, /* src_mask */ |
| 1511 | 0xffff, /* dst_mask */ |
| 1512 | FALSE), /* pcrel_offset */ |
| 1513 | HOWTO (R_NDS32_DWARF2_LEB_RELA, /* type */ |
| 1514 | 0, /* rightshift */ |
| 1515 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1516 | 32, /* bitsize */ |
| 1517 | FALSE, /* pc_relative */ |
| 1518 | 0, /* bitpos */ |
| 1519 | complain_overflow_dont,/* complain_on_overflow */ |
| 1520 | nds32_elf_ignore_reloc,/* special_function */ |
| 1521 | "R_NDS32_DWARF2_LEB_RELA", /* name */ |
| 1522 | FALSE, /* partial_inplace */ |
| 1523 | 0xffffffff, /* src_mask */ |
| 1524 | 0xffffffff, /* dst_mask */ |
| 1525 | FALSE), /* pcrel_offset */ |
| 1526 | HOWTO (R_NDS32_UPDATE_TA_RELA,/* type */ |
| 1527 | 0, /* rightshift */ |
| 1528 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1529 | 16, /* bitsize */ |
| 1530 | FALSE, /* pc_relative */ |
| 1531 | 0, /* bitpos */ |
| 1532 | complain_overflow_dont,/* complain_on_overflow */ |
| 1533 | nds32_elf_ignore_reloc,/* special_function */ |
| 1534 | "R_NDS32_UPDATE_TA_RELA", /* name */ |
| 1535 | FALSE, /* partial_inplace */ |
| 1536 | 0xffff, /* src_mask */ |
| 1537 | 0xffff, /* dst_mask */ |
| 1538 | FALSE), /* pcrel_offset */ |
| 1539 | /* Like R_NDS32_PCREL, but referring to the procedure linkage table |
| 1540 | entry for the symbol. */ |
| 1541 | HOWTO (R_NDS32_9_PLTREL, /* type */ |
| 1542 | 1, /* rightshift */ |
| 1543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1544 | 8, /* bitsize */ |
| 1545 | TRUE, /* pc_relative */ |
| 1546 | 0, /* bitpos */ |
| 1547 | complain_overflow_signed, /* complain_on_overflow */ |
| 1548 | bfd_elf_generic_reloc, /* special_function */ |
| 1549 | "R_NDS32_9_PLTREL", /* name */ |
| 1550 | FALSE, /* partial_inplace */ |
| 1551 | 0xff, /* src_mask */ |
| 1552 | 0xff, /* dst_mask */ |
| 1553 | TRUE), /* pcrel_offset */ |
| 1554 | /* Low 20 bits of PLT symbol offset relative to GOT (GP). */ |
| 1555 | HOWTO (R_NDS32_PLT_GOTREL_LO20, /* type */ |
| 1556 | 0, /* rightshift */ |
| 1557 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1558 | 20, /* bitsize */ |
| 1559 | FALSE, /* pc_relative */ |
| 1560 | 0, /* bitpos */ |
| 1561 | complain_overflow_dont,/* complain_on_overflow */ |
| 1562 | bfd_elf_generic_reloc, /* special_function */ |
| 1563 | "R_NDS32_PLT_GOTREL_LO20", /* name */ |
| 1564 | FALSE, /* partial_inplace */ |
| 1565 | 0x000fffff, /* src_mask */ |
| 1566 | 0x000fffff, /* dst_mask */ |
| 1567 | FALSE), /* pcrel_offset */ |
| 1568 | /* low 15 bits of PLT symbol offset relative to GOT (GP) */ |
| 1569 | HOWTO (R_NDS32_PLT_GOTREL_LO15, /* type */ |
| 1570 | 0, /* rightshift */ |
| 1571 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1572 | 15, /* bitsize */ |
| 1573 | FALSE, /* pc_relative */ |
| 1574 | 0, /* bitpos */ |
| 1575 | complain_overflow_dont,/* complain_on_overflow */ |
| 1576 | bfd_elf_generic_reloc, /* special_function */ |
| 1577 | "R_NDS32_PLT_GOTREL_LO15", /* name */ |
| 1578 | FALSE, /* partial_inplace */ |
| 1579 | 0x00007fff, /* src_mask */ |
| 1580 | 0x00007fff, /* dst_mask */ |
| 1581 | FALSE), /* pcrel_offset */ |
| 1582 | /* Low 19 bits of PLT symbol offset relative to GOT (GP). */ |
| 1583 | HOWTO (R_NDS32_PLT_GOTREL_LO19, /* type */ |
| 1584 | 0, /* rightshift */ |
| 1585 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1586 | 19, /* bitsize */ |
| 1587 | FALSE, /* pc_relative */ |
| 1588 | 0, /* bitpos */ |
| 1589 | complain_overflow_dont,/* complain_on_overflow */ |
| 1590 | bfd_elf_generic_reloc, /* special_function */ |
| 1591 | "R_NDS32_PLT_GOTREL_LO19", /* name */ |
| 1592 | FALSE, /* partial_inplace */ |
| 1593 | 0x0007ffff, /* src_mask */ |
| 1594 | 0x0007ffff, /* dst_mask */ |
| 1595 | FALSE), /* pcrel_offset */ |
| 1596 | HOWTO (R_NDS32_GOT_LO15, /* type */ |
| 1597 | 0, /* rightshift */ |
| 1598 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1599 | 15, /* bitsize */ |
| 1600 | FALSE, /* pc_relative */ |
| 1601 | 0, /* bitpos */ |
| 1602 | complain_overflow_dont,/* complain_on_overflow */ |
| 1603 | bfd_elf_generic_reloc, /* special_function */ |
| 1604 | "R_NDS32_GOT_LO15", /* name */ |
| 1605 | FALSE, /* partial_inplace */ |
| 1606 | 0x00007fff, /* src_mask */ |
| 1607 | 0x00007fff, /* dst_mask */ |
| 1608 | FALSE), /* pcrel_offset */ |
| 1609 | HOWTO (R_NDS32_GOT_LO19, /* type */ |
| 1610 | 0, /* rightshift */ |
| 1611 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1612 | 19, /* bitsize */ |
| 1613 | FALSE, /* pc_relative */ |
| 1614 | 0, /* bitpos */ |
| 1615 | complain_overflow_dont,/* complain_on_overflow */ |
| 1616 | bfd_elf_generic_reloc, /* special_function */ |
| 1617 | "R_NDS32_GOT_LO19", /* name */ |
| 1618 | FALSE, /* partial_inplace */ |
| 1619 | 0x0007ffff, /* src_mask */ |
| 1620 | 0x0007ffff, /* dst_mask */ |
| 1621 | FALSE), /* pcrel_offset */ |
| 1622 | HOWTO (R_NDS32_GOTOFF_LO15, /* type */ |
| 1623 | 0, /* rightshift */ |
| 1624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1625 | 15, /* bitsize */ |
| 1626 | FALSE, /* pc_relative */ |
| 1627 | 0, /* bitpos */ |
| 1628 | complain_overflow_dont,/* complain_on_overflow */ |
| 1629 | bfd_elf_generic_reloc, /* special_function */ |
| 1630 | "R_NDS32_GOTOFF_LO15", /* name */ |
| 1631 | FALSE, /* partial_inplace */ |
| 1632 | 0x00007fff, /* src_mask */ |
| 1633 | 0x00007fff, /* dst_mask */ |
| 1634 | FALSE), /* pcrel_offset */ |
| 1635 | HOWTO (R_NDS32_GOTOFF_LO19, /* type */ |
| 1636 | 0, /* rightshift */ |
| 1637 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1638 | 19, /* bitsize */ |
| 1639 | FALSE, /* pc_relative */ |
| 1640 | 0, /* bitpos */ |
| 1641 | complain_overflow_dont,/* complain_on_overflow */ |
| 1642 | bfd_elf_generic_reloc, /* special_function */ |
| 1643 | "R_NDS32_GOTOFF_LO19", /* name */ |
| 1644 | FALSE, /* partial_inplace */ |
| 1645 | 0x0007ffff, /* src_mask */ |
| 1646 | 0x0007ffff, /* dst_mask */ |
| 1647 | FALSE), /* pcrel_offset */ |
| 1648 | /* GOT 15 bits offset. */ |
| 1649 | HOWTO (R_NDS32_GOT15S2_RELA, /* type */ |
| 1650 | 2, /* rightshift */ |
| 1651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1652 | 15, /* bitsize */ |
| 1653 | FALSE, /* pc_relative */ |
| 1654 | 0, /* bitpos */ |
| 1655 | complain_overflow_signed, /* complain_on_overflow */ |
| 1656 | bfd_elf_generic_reloc, /* special_function */ |
| 1657 | "R_NDS32_GOT15S2_RELA",/* name */ |
| 1658 | FALSE, /* partial_inplace */ |
| 1659 | 0x00007fff, /* src_mask */ |
| 1660 | 0x00007fff, /* dst_mask */ |
| 1661 | FALSE), /* pcrel_offset */ |
| 1662 | /* GOT 17 bits offset. */ |
| 1663 | HOWTO (R_NDS32_GOT17S2_RELA, /* type */ |
| 1664 | 2, /* rightshift */ |
| 1665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1666 | 17, /* bitsize */ |
| 1667 | FALSE, /* pc_relative */ |
| 1668 | 0, /* bitpos */ |
| 1669 | complain_overflow_signed, /* complain_on_overflow */ |
| 1670 | bfd_elf_generic_reloc, /* special_function */ |
| 1671 | "R_NDS32_GOT17S2_RELA",/* name */ |
| 1672 | FALSE, /* partial_inplace */ |
| 1673 | 0x0001ffff, /* src_mask */ |
| 1674 | 0x0001ffff, /* dst_mask */ |
| 1675 | FALSE), /* pcrel_offset */ |
| 1676 | /* A 5 bit address. */ |
| 1677 | HOWTO (R_NDS32_5_RELA, /* type */ |
| 1678 | 0, /* rightshift */ |
| 1679 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1680 | 5, /* bitsize */ |
| 1681 | FALSE, /* pc_relative */ |
| 1682 | 0, /* bitpos */ |
| 1683 | complain_overflow_signed, /* complain_on_overflow */ |
| 1684 | bfd_elf_generic_reloc, /* special_function */ |
| 1685 | "R_NDS32_5_RELA", /* name */ |
| 1686 | FALSE, /* partial_inplace */ |
| 1687 | 0x1f, /* src_mask */ |
| 1688 | 0x1f, /* dst_mask */ |
| 1689 | FALSE), /* pcrel_offset */ |
| 1690 | HOWTO (R_NDS32_10_UPCREL_RELA,/* type */ |
| 1691 | 1, /* rightshift */ |
| 1692 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1693 | 9, /* bitsize */ |
| 1694 | TRUE, /* pc_relative */ |
| 1695 | 0, /* bitpos */ |
| 1696 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 1697 | bfd_elf_generic_reloc, /* special_function */ |
| 1698 | "R_NDS32_10_UPCREL_RELA", /* name */ |
| 1699 | FALSE, /* partial_inplace */ |
| 1700 | 0x1ff, /* src_mask */ |
| 1701 | 0x1ff, /* dst_mask */ |
| 1702 | TRUE), /* pcrel_offset */ |
| 1703 | HOWTO (R_NDS32_SDA_FP7U2_RELA,/* type */ |
| 1704 | 2, /* rightshift */ |
| 1705 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1706 | 7, /* bitsize */ |
| 1707 | FALSE, /* pc_relative */ |
| 1708 | 0, /* bitpos */ |
| 1709 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 1710 | bfd_elf_generic_reloc, /* special_function */ |
| 1711 | "R_NDS32_SDA_FP7U2_RELA", /* name */ |
| 1712 | FALSE, /* partial_inplace */ |
| 1713 | 0x0000007f, /* src_mask */ |
| 1714 | 0x0000007f, /* dst_mask */ |
| 1715 | FALSE), /* pcrel_offset */ |
| 1716 | HOWTO (R_NDS32_WORD_9_PCREL_RELA, /* type */ |
| 1717 | 1, /* rightshift */ |
| 1718 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1719 | 8, /* bitsize */ |
| 1720 | TRUE, /* pc_relative */ |
| 1721 | 0, /* bitpos */ |
| 1722 | complain_overflow_signed, /* complain_on_overflow */ |
| 1723 | bfd_elf_generic_reloc, /* special_function */ |
| 1724 | "R_NDS32_WORD_9_PCREL_RELA", /* name */ |
| 1725 | FALSE, /* partial_inplace */ |
| 1726 | 0xff, /* src_mask */ |
| 1727 | 0xff, /* dst_mask */ |
| 1728 | TRUE), /* pcrel_offset */ |
| 1729 | HOWTO (R_NDS32_25_ABS_RELA, /* type */ |
| 1730 | 1, /* rightshift */ |
| 1731 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1732 | 24, /* bitsize */ |
| 1733 | FALSE, /* pc_relative */ |
| 1734 | 0, /* bitpos */ |
| 1735 | complain_overflow_dont,/* complain_on_overflow */ |
| 1736 | bfd_elf_generic_reloc, /* special_function */ |
| 1737 | "R_NDS32_25_ABS_RELA", /* name */ |
| 1738 | FALSE, /* partial_inplace */ |
| 1739 | 0xffffff, /* src_mask */ |
| 1740 | 0xffffff, /* dst_mask */ |
| 1741 | FALSE), /* pcrel_offset */ |
| 1742 | |
| 1743 | /* A relative 17 bit relocation for ifc, right shifted by 1. */ |
| 1744 | HOWTO (R_NDS32_17IFC_PCREL_RELA, /* type */ |
| 1745 | 1, /* rightshift */ |
| 1746 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1747 | 16, /* bitsize */ |
| 1748 | TRUE, /* pc_relative */ |
| 1749 | 0, /* bitpos */ |
| 1750 | complain_overflow_signed, /* complain_on_overflow */ |
| 1751 | bfd_elf_generic_reloc, /* special_function */ |
| 1752 | "R_NDS32_17IFC_PCREL_RELA", /* name */ |
| 1753 | FALSE, /* partial_inplace */ |
| 1754 | 0xffff, /* src_mask */ |
| 1755 | 0xffff, /* dst_mask */ |
| 1756 | TRUE), /* pcrel_offset */ |
| 1757 | |
| 1758 | /* A relative unsigned 10 bit relocation for ifc, right shifted by 1. */ |
| 1759 | HOWTO (R_NDS32_10IFCU_PCREL_RELA, /* type */ |
| 1760 | 1, /* rightshift */ |
| 1761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1762 | 9, /* bitsize */ |
| 1763 | TRUE, /* pc_relative */ |
| 1764 | 0, /* bitpos */ |
| 1765 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 1766 | bfd_elf_generic_reloc, /* special_function */ |
| 1767 | "R_NDS32_10IFCU_PCREL_RELA", /* name */ |
| 1768 | FALSE, /* partial_inplace */ |
| 1769 | 0x1ff, /* src_mask */ |
| 1770 | 0x1ff, /* dst_mask */ |
| 1771 | TRUE), /* pcrel_offset */ |
| 1772 | |
| 1773 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ |
| 1774 | HOWTO (R_NDS32_TLS_LE_HI20, /* type */ |
| 1775 | 12, /* rightshift */ |
| 1776 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1777 | 20, /* bitsize */ |
| 1778 | FALSE, /* pc_relative */ |
| 1779 | 0, /* bitpos */ |
| 1780 | complain_overflow_dont, /* complain_on_overflow */ |
| 1781 | bfd_elf_generic_reloc, /* special_function */ |
| 1782 | "R_NDS32_TLS_LE_HI20", /* name */ |
| 1783 | FALSE, /* partial_inplace */ |
| 1784 | 0x000fffff, /* src_mask */ |
| 1785 | 0x000fffff, /* dst_mask */ |
| 1786 | FALSE), /* pcrel_offset */ |
| 1787 | HOWTO (R_NDS32_TLS_LE_LO12, /* type */ |
| 1788 | 0, /* rightshift */ |
| 1789 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1790 | 12, /* bitsize */ |
| 1791 | FALSE, /* pc_relative */ |
| 1792 | 0, /* bitpos */ |
| 1793 | complain_overflow_dont, /* complain_on_overflow */ |
| 1794 | bfd_elf_generic_reloc, /* special_function */ |
| 1795 | "R_NDS32_TLS_LE_LO12", /* name */ |
| 1796 | FALSE, /* partial_inplace */ |
| 1797 | 0x00000fff, /* src_mask */ |
| 1798 | 0x00000fff, /* dst_mask */ |
| 1799 | FALSE), /* pcrel_offset */ |
| 1800 | |
| 1801 | /* Like R_NDS32_HI20, but referring to the TLS entry for the symbol. */ |
| 1802 | HOWTO (R_NDS32_TLS_IE_HI20, /* type */ |
| 1803 | 12, /* rightshift */ |
| 1804 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1805 | 20, /* bitsize */ |
| 1806 | FALSE, /* pc_relative */ |
| 1807 | 0, /* bitpos */ |
| 1808 | complain_overflow_dont, /* complain_on_overflow */ |
| 1809 | bfd_elf_generic_reloc, /* special_function */ |
| 1810 | "R_NDS32_TLS_IE_HI20", /* name */ |
| 1811 | FALSE, /* partial_inplace */ |
| 1812 | 0x000fffff, /* src_mask */ |
| 1813 | 0x000fffff, /* dst_mask */ |
| 1814 | FALSE), /* pcrel_offset */ |
| 1815 | HOWTO (R_NDS32_TLS_IE_LO12S2, /* type */ |
| 1816 | 2, /* rightshift */ |
| 1817 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1818 | 10, /* bitsize */ |
| 1819 | FALSE, /* pc_relative */ |
| 1820 | 0, /* bitpos */ |
| 1821 | complain_overflow_dont, /* complain_on_overflow */ |
| 1822 | bfd_elf_generic_reloc, /* special_function */ |
| 1823 | "R_NDS32_TLS_IE_LO12S2", /* name */ |
| 1824 | FALSE, /* partial_inplace */ |
| 1825 | 0x000003ff, /* src_mask */ |
| 1826 | 0x000003ff, /* dst_mask */ |
| 1827 | FALSE), /* pcrel_offset */ |
| 1828 | /* Mark a TLS IE entry in GOT. */ |
| 1829 | HOWTO (R_NDS32_TLS_TPOFF, /* type */ |
| 1830 | 0, /* rightshift */ |
| 1831 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1832 | 32, /* bitsize */ |
| 1833 | FALSE, /* pc_relative */ |
| 1834 | 0, /* bitpos */ |
| 1835 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 1836 | bfd_elf_generic_reloc, /* special_function */ |
| 1837 | "R_NDS32_TLS_TPOFF", /* name */ |
| 1838 | FALSE, /* partial_inplace */ |
| 1839 | 0xffffffff, /* src_mask */ |
| 1840 | 0xffffffff, /* dst_mask */ |
| 1841 | FALSE), /* pcrel_offset */ |
| 1842 | /* A 20 bit address. */ |
| 1843 | HOWTO (R_NDS32_TLS_LE_20, /* type */ |
| 1844 | 0, /* rightshift */ |
| 1845 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1846 | 20, /* bitsize */ |
| 1847 | FALSE, /* pc_relative */ |
| 1848 | 0, /* bitpos */ |
| 1849 | complain_overflow_signed, /* complain_on_overflow */ |
| 1850 | bfd_elf_generic_reloc, /* special_function */ |
| 1851 | "R_NDS32_TLS_LE_20", /* name */ |
| 1852 | FALSE, /* partial_inplace */ |
| 1853 | 0xfffff, /* src_mask */ |
| 1854 | 0xfffff, /* dst_mask */ |
| 1855 | FALSE), /* pcrel_offset */ |
| 1856 | HOWTO (R_NDS32_TLS_LE_15S0, /* type */ |
| 1857 | 0, /* rightshift */ |
| 1858 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1859 | 15, /* bitsize */ |
| 1860 | FALSE, /* pc_relative */ |
| 1861 | 0, /* bitpos */ |
| 1862 | complain_overflow_signed, /* complain_on_overflow */ |
| 1863 | bfd_elf_generic_reloc, /* special_function */ |
| 1864 | "R_NDS32_TLS_LE_15S0", /* name */ |
| 1865 | FALSE, /* partial_inplace */ |
| 1866 | 0x7fff, /* src_mask */ |
| 1867 | 0x7fff, /* dst_mask */ |
| 1868 | FALSE), /* pcrel_offset */ |
| 1869 | HOWTO (R_NDS32_TLS_LE_15S1, /* type */ |
| 1870 | 1, /* rightshift */ |
| 1871 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1872 | 15, /* bitsize */ |
| 1873 | FALSE, /* pc_relative */ |
| 1874 | 0, /* bitpos */ |
| 1875 | complain_overflow_signed, /* complain_on_overflow */ |
| 1876 | bfd_elf_generic_reloc, /* special_function */ |
| 1877 | "R_NDS32_TLS_LE_15S1", /* name */ |
| 1878 | FALSE, /* partial_inplace */ |
| 1879 | 0x7fff, /* src_mask */ |
| 1880 | 0x7fff, /* dst_mask */ |
| 1881 | FALSE), /* pcrel_offset */ |
| 1882 | HOWTO (R_NDS32_TLS_LE_15S2, /* type */ |
| 1883 | 2, /* rightshift */ |
| 1884 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1885 | 15, /* bitsize */ |
| 1886 | FALSE, /* pc_relative */ |
| 1887 | 0, /* bitpos */ |
| 1888 | complain_overflow_signed, /* complain_on_overflow */ |
| 1889 | bfd_elf_generic_reloc, /* special_function */ |
| 1890 | "R_NDS32_TLS_LE_15S2", /* name */ |
| 1891 | FALSE, /* partial_inplace */ |
| 1892 | 0x7fff, /* src_mask */ |
| 1893 | 0x7fff, /* dst_mask */ |
| 1894 | FALSE), /* pcrel_offset */ |
| 1895 | |
| 1896 | /* Relax hint for unconditional call sequence */ |
| 1897 | HOWTO (R_NDS32_LONGCALL4, /* type */ |
| 1898 | 0, /* rightshift */ |
| 1899 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1900 | 32, /* bitsize */ |
| 1901 | FALSE, /* pc_relative */ |
| 1902 | 0, /* bitpos */ |
| 1903 | complain_overflow_dont, /* complain_on_overflow */ |
| 1904 | nds32_elf_ignore_reloc, /* special_function */ |
| 1905 | "R_NDS32_LONGCALL4", /* name */ |
| 1906 | FALSE, /* partial_inplace */ |
| 1907 | 0xffffffff, /* src_mask */ |
| 1908 | 0xffffffff, /* dst_mask */ |
| 1909 | FALSE), /* pcrel_offset */ |
| 1910 | |
| 1911 | /* Relax hint for conditional call sequence. */ |
| 1912 | HOWTO (R_NDS32_LONGCALL5, /* type */ |
| 1913 | 0, /* rightshift */ |
| 1914 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1915 | 32, /* bitsize */ |
| 1916 | FALSE, /* pc_relative */ |
| 1917 | 0, /* bitpos */ |
| 1918 | complain_overflow_dont, /* complain_on_overflow */ |
| 1919 | nds32_elf_ignore_reloc, /* special_function */ |
| 1920 | "R_NDS32_LONGCALL5", /* name */ |
| 1921 | FALSE, /* partial_inplace */ |
| 1922 | 0xffffffff, /* src_mask */ |
| 1923 | 0xffffffff, /* dst_mask */ |
| 1924 | FALSE), /* pcrel_offset */ |
| 1925 | |
| 1926 | /* Relax hint for conditional call sequence. */ |
| 1927 | HOWTO (R_NDS32_LONGCALL6, /* type */ |
| 1928 | 0, /* rightshift */ |
| 1929 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1930 | 32, /* bitsize */ |
| 1931 | FALSE, /* pc_relative */ |
| 1932 | 0, /* bitpos */ |
| 1933 | complain_overflow_dont, /* complain_on_overflow */ |
| 1934 | nds32_elf_ignore_reloc, /* special_function */ |
| 1935 | "R_NDS32_LONGCALL6", /* name */ |
| 1936 | FALSE, /* partial_inplace */ |
| 1937 | 0xffffffff, /* src_mask */ |
| 1938 | 0xffffffff, /* dst_mask */ |
| 1939 | FALSE), /* pcrel_offset */ |
| 1940 | |
| 1941 | /* Relax hint for unconditional branch sequence. */ |
| 1942 | HOWTO (R_NDS32_LONGJUMP4, /* type */ |
| 1943 | 0, /* rightshift */ |
| 1944 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1945 | 32, /* bitsize */ |
| 1946 | FALSE, /* pc_relative */ |
| 1947 | 0, /* bitpos */ |
| 1948 | complain_overflow_dont, /* complain_on_overflow */ |
| 1949 | nds32_elf_ignore_reloc, /* special_function */ |
| 1950 | "R_NDS32_LONGJUMP4", /* name */ |
| 1951 | FALSE, /* partial_inplace */ |
| 1952 | 0xffffffff, /* src_mask */ |
| 1953 | 0xffffffff, /* dst_mask */ |
| 1954 | FALSE), /* pcrel_offset */ |
| 1955 | |
| 1956 | /* Relax hint for conditional branch sequence. */ |
| 1957 | HOWTO (R_NDS32_LONGJUMP5, /* type */ |
| 1958 | 0, /* rightshift */ |
| 1959 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1960 | 32, /* bitsize */ |
| 1961 | FALSE, /* pc_relative */ |
| 1962 | 0, /* bitpos */ |
| 1963 | complain_overflow_dont, /* complain_on_overflow */ |
| 1964 | nds32_elf_ignore_reloc, /* special_function */ |
| 1965 | "R_NDS32_LONGJUMP5", /* name */ |
| 1966 | FALSE, /* partial_inplace */ |
| 1967 | 0xffffffff, /* src_mask */ |
| 1968 | 0xffffffff, /* dst_mask */ |
| 1969 | FALSE), /* pcrel_offset */ |
| 1970 | |
| 1971 | /* Relax hint for conditional branch sequence. */ |
| 1972 | HOWTO (R_NDS32_LONGJUMP6, /* type */ |
| 1973 | 0, /* rightshift */ |
| 1974 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1975 | 32, /* bitsize */ |
| 1976 | FALSE, /* pc_relative */ |
| 1977 | 0, /* bitpos */ |
| 1978 | complain_overflow_dont, /* complain_on_overflow */ |
| 1979 | nds32_elf_ignore_reloc, /* special_function */ |
| 1980 | "R_NDS32_LONGJUMP6", /* name */ |
| 1981 | FALSE, /* partial_inplace */ |
| 1982 | 0xffffffff, /* src_mask */ |
| 1983 | 0xffffffff, /* dst_mask */ |
| 1984 | FALSE), /* pcrel_offset */ |
| 1985 | |
| 1986 | /* Relax hint for conditional branch sequence. */ |
| 1987 | HOWTO (R_NDS32_LONGJUMP7, /* type */ |
| 1988 | 0, /* rightshift */ |
| 1989 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1990 | 32, /* bitsize */ |
| 1991 | FALSE, /* pc_relative */ |
| 1992 | 0, /* bitpos */ |
| 1993 | complain_overflow_dont, /* complain_on_overflow */ |
| 1994 | nds32_elf_ignore_reloc, /* special_function */ |
| 1995 | "R_NDS32_LONGJUMP7", /* name */ |
| 1996 | FALSE, /* partial_inplace */ |
| 1997 | 0xffffffff, /* src_mask */ |
| 1998 | 0xffffffff, /* dst_mask */ |
| 1999 | FALSE), /* pcrel_offset */ |
| 2000 | }; |
| 2001 | |
| 2002 | /* Relocations used for relaxation. */ |
| 2003 | static reloc_howto_type nds32_elf_relax_howto_table[] = |
| 2004 | { |
| 2005 | HOWTO (R_NDS32_RELAX_ENTRY, /* type */ |
| 2006 | 0, /* rightshift */ |
| 2007 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2008 | 32, /* bitsize */ |
| 2009 | FALSE, /* pc_relative */ |
| 2010 | 0, /* bitpos */ |
| 2011 | complain_overflow_dont,/* complain_on_overflow */ |
| 2012 | nds32_elf_ignore_reloc,/* special_function */ |
| 2013 | "R_NDS32_RELAX_ENTRY", /* name */ |
| 2014 | FALSE, /* partial_inplace */ |
| 2015 | 0xffffffff, /* src_mask */ |
| 2016 | 0xffffffff, /* dst_mask */ |
| 2017 | FALSE), /* pcrel_offset */ |
| 2018 | HOWTO (R_NDS32_GOT_SUFF, /* type */ |
| 2019 | 0, /* rightshift */ |
| 2020 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2021 | 32, /* bitsize */ |
| 2022 | FALSE, /* pc_relative */ |
| 2023 | 0, /* bitpos */ |
| 2024 | complain_overflow_dont,/* complain_on_overflow */ |
| 2025 | nds32_elf_ignore_reloc,/* special_function */ |
| 2026 | "R_NDS32_GOT_SUFF", /* name */ |
| 2027 | FALSE, /* partial_inplace */ |
| 2028 | 0xffffffff, /* src_mask */ |
| 2029 | 0xffffffff, /* dst_mask */ |
| 2030 | FALSE), /* pcrel_offset */ |
| 2031 | HOWTO (R_NDS32_GOTOFF_SUFF, /* type */ |
| 2032 | 0, /* rightshift */ |
| 2033 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2034 | 32, /* bitsize */ |
| 2035 | FALSE, /* pc_relative */ |
| 2036 | 0, /* bitpos */ |
| 2037 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 2038 | nds32_elf_ignore_reloc,/* special_function */ |
| 2039 | "R_NDS32_GOTOFF_SUFF", /* name */ |
| 2040 | FALSE, /* partial_inplace */ |
| 2041 | 0xffffffff, /* src_mask */ |
| 2042 | 0xffffffff, /* dst_mask */ |
| 2043 | FALSE), /* pcrel_offset */ |
| 2044 | HOWTO (R_NDS32_PLT_GOT_SUFF, /* type */ |
| 2045 | 0, /* rightshift */ |
| 2046 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2047 | 32, /* bitsize */ |
| 2048 | FALSE, /* pc_relative */ |
| 2049 | 0, /* bitpos */ |
| 2050 | complain_overflow_dont,/* complain_on_overflow */ |
| 2051 | nds32_elf_ignore_reloc,/* special_function */ |
| 2052 | "R_NDS32_PLT_GOT_SUFF",/* name */ |
| 2053 | FALSE, /* partial_inplace */ |
| 2054 | 0xffffffff, /* src_mask */ |
| 2055 | 0xffffffff, /* dst_mask */ |
| 2056 | FALSE), /* pcrel_offset */ |
| 2057 | HOWTO (R_NDS32_MULCALL_SUFF, /* type */ |
| 2058 | 0, /* rightshift */ |
| 2059 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2060 | 32, /* bitsize */ |
| 2061 | FALSE, /* pc_relative */ |
| 2062 | 0, /* bitpos */ |
| 2063 | complain_overflow_dont,/* complain_on_overflow */ |
| 2064 | nds32_elf_ignore_reloc,/* special_function */ |
| 2065 | "R_NDS32_MULCALL_SUFF",/* name */ |
| 2066 | FALSE, /* partial_inplace */ |
| 2067 | 0xffffffff, /* src_mask */ |
| 2068 | 0xffffffff, /* dst_mask */ |
| 2069 | FALSE), /* pcrel_offset */ |
| 2070 | HOWTO (R_NDS32_PTR, /* type */ |
| 2071 | 0, /* rightshift */ |
| 2072 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2073 | 32, /* bitsize */ |
| 2074 | FALSE, /* pc_relative */ |
| 2075 | 0, /* bitpos */ |
| 2076 | complain_overflow_dont,/* complain_on_overflow */ |
| 2077 | nds32_elf_ignore_reloc,/* special_function */ |
| 2078 | "R_NDS32_PTR", /* name */ |
| 2079 | FALSE, /* partial_inplace */ |
| 2080 | 0xffffffff, /* src_mask */ |
| 2081 | 0xffffffff, /* dst_mask */ |
| 2082 | FALSE), /* pcrel_offset */ |
| 2083 | HOWTO (R_NDS32_PTR_COUNT, /* type */ |
| 2084 | 0, /* rightshift */ |
| 2085 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2086 | 32, /* bitsize */ |
| 2087 | FALSE, /* pc_relative */ |
| 2088 | 0, /* bitpos */ |
| 2089 | complain_overflow_dont,/* complain_on_overflow */ |
| 2090 | nds32_elf_ignore_reloc,/* special_function */ |
| 2091 | "R_NDS32_PTR_COUNT", /* name */ |
| 2092 | FALSE, /* partial_inplace */ |
| 2093 | 0xffffffff, /* src_mask */ |
| 2094 | 0xffffffff, /* dst_mask */ |
| 2095 | FALSE), /* pcrel_offset */ |
| 2096 | HOWTO (R_NDS32_PTR_RESOLVED, /* type */ |
| 2097 | 0, /* rightshift */ |
| 2098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2099 | 32, /* bitsize */ |
| 2100 | FALSE, /* pc_relative */ |
| 2101 | 0, /* bitpos */ |
| 2102 | complain_overflow_dont,/* complain_on_overflow */ |
| 2103 | nds32_elf_ignore_reloc,/* special_function */ |
| 2104 | "R_NDS32_PTR_RESOLVED",/* name */ |
| 2105 | FALSE, /* partial_inplace */ |
| 2106 | 0xffffffff, /* src_mask */ |
| 2107 | 0xffffffff, /* dst_mask */ |
| 2108 | FALSE), /* pcrel_offset */ |
| 2109 | HOWTO (R_NDS32_PLTBLOCK, /* type */ |
| 2110 | 0, /* rightshift */ |
| 2111 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2112 | 32, /* bitsize */ |
| 2113 | FALSE, /* pc_relative */ |
| 2114 | 0, /* bitpos */ |
| 2115 | complain_overflow_dont,/* complain_on_overflow */ |
| 2116 | nds32_elf_ignore_reloc,/* special_function */ |
| 2117 | "R_NDS32_PLTBLOCK", /* name */ |
| 2118 | FALSE, /* partial_inplace */ |
| 2119 | 0xffffffff, /* src_mask */ |
| 2120 | 0xffffffff, /* dst_mask */ |
| 2121 | FALSE), /* pcrel_offset */ |
| 2122 | HOWTO (R_NDS32_RELAX_REGION_BEGIN, /* type */ |
| 2123 | 0, /* rightshift */ |
| 2124 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2125 | 32, /* bitsize */ |
| 2126 | FALSE, /* pc_relative */ |
| 2127 | 0, /* bitpos */ |
| 2128 | complain_overflow_dont,/* complain_on_overflow */ |
| 2129 | nds32_elf_ignore_reloc,/* special_function */ |
| 2130 | "R_NDS32_RELAX_REGION_BEGIN", /* name */ |
| 2131 | FALSE, /* partial_inplace */ |
| 2132 | 0xffffffff, /* src_mask */ |
| 2133 | 0xffffffff, /* dst_mask */ |
| 2134 | FALSE), /* pcrel_offset */ |
| 2135 | HOWTO (R_NDS32_RELAX_REGION_END, /* type */ |
| 2136 | 0, /* rightshift */ |
| 2137 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2138 | 32, /* bitsize */ |
| 2139 | FALSE, /* pc_relative */ |
| 2140 | 0, /* bitpos */ |
| 2141 | complain_overflow_dont,/* complain_on_overflow */ |
| 2142 | nds32_elf_ignore_reloc,/* special_function */ |
| 2143 | "R_NDS32_RELAX_REGION_END", /* name */ |
| 2144 | FALSE, /* partial_inplace */ |
| 2145 | 0xffffffff, /* src_mask */ |
| 2146 | 0xffffffff, /* dst_mask */ |
| 2147 | FALSE), /* pcrel_offset */ |
| 2148 | HOWTO (R_NDS32_MINUEND, /* type */ |
| 2149 | 0, /* rightshift */ |
| 2150 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2151 | 32, /* bitsize */ |
| 2152 | FALSE, /* pc_relative */ |
| 2153 | 0, /* bitpos */ |
| 2154 | complain_overflow_dont,/* complain_on_overflow */ |
| 2155 | nds32_elf_ignore_reloc,/* special_function */ |
| 2156 | "R_NDS32_MINUEND", /* name */ |
| 2157 | FALSE, /* partial_inplace */ |
| 2158 | 0xffffffff, /* src_mask */ |
| 2159 | 0xffffffff, /* dst_mask */ |
| 2160 | FALSE), /* pcrel_offset */ |
| 2161 | HOWTO (R_NDS32_SUBTRAHEND, /* type */ |
| 2162 | 0, /* rightshift */ |
| 2163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2164 | 32, /* bitsize */ |
| 2165 | FALSE, /* pc_relative */ |
| 2166 | 0, /* bitpos */ |
| 2167 | complain_overflow_dont,/* complain_on_overflow */ |
| 2168 | nds32_elf_ignore_reloc,/* special_function */ |
| 2169 | "R_NDS32_SUBTRAHEND", /* name */ |
| 2170 | FALSE, /* partial_inplace */ |
| 2171 | 0xffffffff, /* src_mask */ |
| 2172 | 0xffffffff, /* dst_mask */ |
| 2173 | FALSE), /* pcrel_offset */ |
| 2174 | HOWTO (R_NDS32_DIFF8, /* type */ |
| 2175 | 0, /* rightshift */ |
| 2176 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2177 | 8, /* bitsize */ |
| 2178 | FALSE, /* pc_relative */ |
| 2179 | 0, /* bitpos */ |
| 2180 | complain_overflow_dont,/* complain_on_overflow */ |
| 2181 | nds32_elf_ignore_reloc,/* special_function */ |
| 2182 | "R_NDS32_DIFF8", /* name */ |
| 2183 | FALSE, /* partial_inplace */ |
| 2184 | 0x000000ff, /* src_mask */ |
| 2185 | 0x000000ff, /* dst_mask */ |
| 2186 | FALSE), /* pcrel_offset */ |
| 2187 | HOWTO (R_NDS32_DIFF16, /* type */ |
| 2188 | 0, /* rightshift */ |
| 2189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2190 | 16, /* bitsize */ |
| 2191 | FALSE, /* pc_relative */ |
| 2192 | 0, /* bitpos */ |
| 2193 | complain_overflow_dont,/* complain_on_overflow */ |
| 2194 | nds32_elf_ignore_reloc,/* special_function */ |
| 2195 | "R_NDS32_DIFF16", /* name */ |
| 2196 | FALSE, /* partial_inplace */ |
| 2197 | 0x0000ffff, /* src_mask */ |
| 2198 | 0x0000ffff, /* dst_mask */ |
| 2199 | FALSE), /* pcrel_offset */ |
| 2200 | HOWTO (R_NDS32_DIFF32, /* type */ |
| 2201 | 0, /* rightshift */ |
| 2202 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2203 | 32, /* bitsize */ |
| 2204 | FALSE, /* pc_relative */ |
| 2205 | 0, /* bitpos */ |
| 2206 | complain_overflow_dont,/* complain_on_overflow */ |
| 2207 | nds32_elf_ignore_reloc,/* special_function */ |
| 2208 | "R_NDS32_DIFF32", /* name */ |
| 2209 | FALSE, /* partial_inplace */ |
| 2210 | 0xffffffff, /* src_mask */ |
| 2211 | 0xffffffff, /* dst_mask */ |
| 2212 | FALSE), /* pcrel_offset */ |
| 2213 | HOWTO (R_NDS32_DIFF_ULEB128, /* type */ |
| 2214 | 0, /* rightshift */ |
| 2215 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2216 | 0, /* bitsize */ |
| 2217 | FALSE, /* pc_relative */ |
| 2218 | 0, /* bitpos */ |
| 2219 | complain_overflow_dont,/* complain_on_overflow */ |
| 2220 | nds32_elf_ignore_reloc,/* special_function */ |
| 2221 | "R_NDS32_DIFF_ULEB128",/* name */ |
| 2222 | FALSE, /* partial_inplace */ |
| 2223 | 0xffffffff, /* src_mask */ |
| 2224 | 0xffffffff, /* dst_mask */ |
| 2225 | FALSE), /* pcrel_offset */ |
| 2226 | HOWTO (R_NDS32_DATA, /* type */ |
| 2227 | 0, /* rightshift */ |
| 2228 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2229 | 32, /* bitsize */ |
| 2230 | FALSE, /* pc_relative */ |
| 2231 | 0, /* bitpos */ |
| 2232 | complain_overflow_dont,/* complain_on_overflow */ |
| 2233 | nds32_elf_ignore_reloc,/* special_function */ |
| 2234 | "R_NDS32_DATA", /* name */ |
| 2235 | FALSE, /* partial_inplace */ |
| 2236 | 0xffffffff, /* src_mask */ |
| 2237 | 0xffffffff, /* dst_mask */ |
| 2238 | FALSE), /* pcrel_offset */ |
| 2239 | HOWTO (R_NDS32_TRAN, /* type */ |
| 2240 | 0, /* rightshift */ |
| 2241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2242 | 32, /* bitsize */ |
| 2243 | FALSE, /* pc_relative */ |
| 2244 | 0, /* bitpos */ |
| 2245 | complain_overflow_dont,/* complain_on_overflow */ |
| 2246 | nds32_elf_ignore_reloc,/* special_function */ |
| 2247 | "R_NDS32_TRAN", /* name */ |
| 2248 | FALSE, /* partial_inplace */ |
| 2249 | 0xffffffff, /* src_mask */ |
| 2250 | 0xffffffff, /* dst_mask */ |
| 2251 | FALSE), /* pcrel_offset */ |
| 2252 | HOWTO (R_NDS32_TLS_LE_ADD, /* type */ |
| 2253 | 0, /* rightshift */ |
| 2254 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2255 | 32, /* bitsize */ |
| 2256 | FALSE, /* pc_relative */ |
| 2257 | 0, /* bitpos */ |
| 2258 | complain_overflow_dont, /* complain_on_overflow */ |
| 2259 | nds32_elf_ignore_reloc, /* special_function */ |
| 2260 | "R_NDS32_TLS_LE_ADD", /* name */ |
| 2261 | FALSE, /* partial_inplace */ |
| 2262 | 0xffffffff, /* src_mask */ |
| 2263 | 0xffffffff, /* dst_mask */ |
| 2264 | FALSE), /* pcrel_offset */ |
| 2265 | HOWTO (R_NDS32_TLS_LE_LS, /* type */ |
| 2266 | 0, /* rightshift */ |
| 2267 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2268 | 32, /* bitsize */ |
| 2269 | FALSE, /* pc_relative */ |
| 2270 | 0, /* bitpos */ |
| 2271 | complain_overflow_dont, /* complain_on_overflow */ |
| 2272 | nds32_elf_ignore_reloc, /* special_function */ |
| 2273 | "R_NDS32_TLS_LE_LS", /* name */ |
| 2274 | FALSE, /* partial_inplace */ |
| 2275 | 0xffffffff, /* src_mask */ |
| 2276 | 0xffffffff, /* dst_mask */ |
| 2277 | FALSE), /* pcrel_offset */ |
| 2278 | HOWTO (R_NDS32_EMPTY, /* type */ |
| 2279 | 0, /* rightshift */ |
| 2280 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 2281 | 32, /* bitsize */ |
| 2282 | FALSE, /* pc_relative */ |
| 2283 | 0, /* bitpos */ |
| 2284 | complain_overflow_dont, /* complain_on_overflow */ |
| 2285 | nds32_elf_ignore_reloc, /* special_function */ |
| 2286 | "R_NDS32_EMPTY", /* name */ |
| 2287 | FALSE, /* partial_inplace */ |
| 2288 | 0xffffffff, /* src_mask */ |
| 2289 | 0xffffffff, /* dst_mask */ |
| 2290 | FALSE), /* pcrel_offset */ |
| 2291 | }; |
| 2292 | |
| 2293 | \f |
| 2294 | /* nds32_insertion_sort sorts an array with nmemb elements of size size. |
| 2295 | This prototype is the same as qsort (). */ |
| 2296 | |
| 2297 | void |
| 2298 | nds32_insertion_sort (void *base, size_t nmemb, size_t size, |
| 2299 | int (*compar) (const void *lhs, const void *rhs)) |
| 2300 | { |
| 2301 | char *ptr = (char *) base; |
| 2302 | int i, j; |
| 2303 | char *tmp = xmalloc (size); |
| 2304 | |
| 2305 | /* If i is less than j, i is inserted before j. |
| 2306 | |
| 2307 | |---- j ----- i --------------| |
| 2308 | \ / \ / |
| 2309 | sorted unsorted |
| 2310 | */ |
| 2311 | |
| 2312 | for (i = 1; i < (int) nmemb; i++) |
| 2313 | { |
| 2314 | for (j = (i - 1); j >= 0; j--) |
| 2315 | if (compar (ptr + i * size, ptr + j * size) >= 0) |
| 2316 | break; |
| 2317 | |
| 2318 | j++; |
| 2319 | |
| 2320 | if (i == j) |
| 2321 | continue; /* i is in order. */ |
| 2322 | |
| 2323 | memcpy (tmp, ptr + i * size, size); |
| 2324 | memmove (ptr + (j + 1) * size, ptr + j * size, (i - j) * size); |
| 2325 | memcpy (ptr + j * size, tmp, size); |
| 2326 | } |
| 2327 | free (tmp); |
| 2328 | } |
| 2329 | |
| 2330 | /* Sort relocation by r_offset. |
| 2331 | |
| 2332 | We didn't use qsort () in stdlib, because quick-sort is not a stable sorting |
| 2333 | algorithm. Relocations at the same r_offset must keep their order. |
| 2334 | For example, RELAX_ENTRY must be the very first relocation entry. |
| 2335 | |
| 2336 | Currently, this function implements insertion-sort. |
| 2337 | |
| 2338 | FIXME: If we already sort them in assembler, why bother sort them |
| 2339 | here again? */ |
| 2340 | |
| 2341 | static int |
| 2342 | compar_reloc (const void *lhs, const void *rhs) |
| 2343 | { |
| 2344 | const Elf_Internal_Rela *l = (const Elf_Internal_Rela *) lhs; |
| 2345 | const Elf_Internal_Rela *r = (const Elf_Internal_Rela *) rhs; |
| 2346 | |
| 2347 | if (l->r_offset > r->r_offset) |
| 2348 | return 1; |
| 2349 | else if (l->r_offset == r->r_offset) |
| 2350 | return 0; |
| 2351 | else |
| 2352 | return -1; |
| 2353 | } |
| 2354 | |
| 2355 | /* Functions listed below are only used for old relocs. |
| 2356 | * nds32_elf_9_pcrel_reloc |
| 2357 | * nds32_elf_do_9_pcrel_reloc |
| 2358 | * nds32_elf_hi20_reloc |
| 2359 | * nds32_elf_relocate_hi20 |
| 2360 | * nds32_elf_lo12_reloc |
| 2361 | * nds32_elf_sda15_reloc |
| 2362 | * nds32_elf_generic_reloc |
| 2363 | */ |
| 2364 | |
| 2365 | /* Handle the R_NDS32_9_PCREL & R_NDS32_9_PCREL_RELA reloc. */ |
| 2366 | |
| 2367 | static bfd_reloc_status_type |
| 2368 | nds32_elf_9_pcrel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2369 | void *data, asection *input_section, bfd *output_bfd, |
| 2370 | char **error_message ATTRIBUTE_UNUSED) |
| 2371 | { |
| 2372 | /* This part is from bfd_elf_generic_reloc. */ |
| 2373 | if (output_bfd != (bfd *) NULL |
| 2374 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 2375 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 2376 | { |
| 2377 | reloc_entry->address += input_section->output_offset; |
| 2378 | return bfd_reloc_ok; |
| 2379 | } |
| 2380 | |
| 2381 | if (output_bfd != NULL) |
| 2382 | { |
| 2383 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 2384 | return bfd_reloc_continue; |
| 2385 | } |
| 2386 | |
| 2387 | return nds32_elf_do_9_pcrel_reloc (abfd, reloc_entry->howto, |
| 2388 | input_section, |
| 2389 | data, reloc_entry->address, |
| 2390 | symbol->section, |
| 2391 | (symbol->value |
| 2392 | + symbol->section->output_section->vma |
| 2393 | + symbol->section->output_offset), |
| 2394 | reloc_entry->addend); |
| 2395 | } |
| 2396 | |
| 2397 | /* Utility to actually perform an R_NDS32_9_PCREL reloc. */ |
| 2398 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) |
| 2399 | |
| 2400 | static bfd_reloc_status_type |
| 2401 | nds32_elf_do_9_pcrel_reloc (bfd *abfd, reloc_howto_type *howto, |
| 2402 | asection *input_section, bfd_byte *data, |
| 2403 | bfd_vma offset, |
| 2404 | asection *symbol_section ATTRIBUTE_UNUSED, |
| 2405 | bfd_vma symbol_value, bfd_vma addend) |
| 2406 | { |
| 2407 | bfd_signed_vma relocation; |
| 2408 | unsigned short x; |
| 2409 | bfd_reloc_status_type status; |
| 2410 | |
| 2411 | /* Sanity check the address (offset in section). */ |
| 2412 | if (offset > bfd_get_section_limit (abfd, input_section)) |
| 2413 | return bfd_reloc_outofrange; |
| 2414 | |
| 2415 | relocation = symbol_value + addend; |
| 2416 | /* Make it pc relative. */ |
| 2417 | relocation -= (input_section->output_section->vma |
| 2418 | + input_section->output_offset); |
| 2419 | /* These jumps mask off the lower two bits of the current address |
| 2420 | before doing pcrel calculations. */ |
| 2421 | relocation -= (offset & -(bfd_vma) 2); |
| 2422 | |
| 2423 | if (relocation < -ACCURATE_8BIT_S1 || relocation >= ACCURATE_8BIT_S1) |
| 2424 | status = bfd_reloc_overflow; |
| 2425 | else |
| 2426 | status = bfd_reloc_ok; |
| 2427 | |
| 2428 | x = bfd_getb16 (data + offset); |
| 2429 | |
| 2430 | relocation >>= howto->rightshift; |
| 2431 | relocation <<= howto->bitpos; |
| 2432 | x = (x & ~howto->dst_mask) |
| 2433 | | (((x & howto->src_mask) + relocation) & howto->dst_mask); |
| 2434 | |
| 2435 | bfd_putb16 ((bfd_vma) x, data + offset); |
| 2436 | |
| 2437 | return status; |
| 2438 | } |
| 2439 | |
| 2440 | /* Handle the R_NDS32_HI20_[SU]LO relocs. |
| 2441 | HI20_SLO is for the add3 and load/store with displacement instructions. |
| 2442 | HI20 is for the or3 instruction. |
| 2443 | For R_NDS32_HI20_SLO, the lower 16 bits are sign extended when added to |
| 2444 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then |
| 2445 | we must add one to the high 16 bytes (which will get subtracted off when |
| 2446 | the low 16 bits are added). |
| 2447 | These relocs have to be done in combination with an R_NDS32_LO12 reloc |
| 2448 | because there is a carry from the LO12 to the HI20. Here we just save |
| 2449 | the information we need; we do the actual relocation when we see the LO12. |
| 2450 | This code is copied from the elf32-mips.c. We also support an arbitrary |
| 2451 | number of HI20 relocs to be associated with a single LO12 reloc. The |
| 2452 | assembler sorts the relocs to ensure each HI20 immediately precedes its |
| 2453 | LO12. However if there are multiple copies, the assembler may not find |
| 2454 | the real LO12 so it picks the first one it finds. */ |
| 2455 | |
| 2456 | struct nds32_hi20 |
| 2457 | { |
| 2458 | struct nds32_hi20 *next; |
| 2459 | bfd_byte *addr; |
| 2460 | bfd_vma addend; |
| 2461 | }; |
| 2462 | |
| 2463 | static struct nds32_hi20 *nds32_hi20_list; |
| 2464 | |
| 2465 | static bfd_reloc_status_type |
| 2466 | nds32_elf_hi20_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
| 2467 | asymbol *symbol, void *data, asection *input_section, |
| 2468 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
| 2469 | { |
| 2470 | bfd_reloc_status_type ret; |
| 2471 | bfd_vma relocation; |
| 2472 | struct nds32_hi20 *n; |
| 2473 | |
| 2474 | /* This part is from bfd_elf_generic_reloc. |
| 2475 | If we're relocating, and this an external symbol, we don't want |
| 2476 | to change anything. */ |
| 2477 | if (output_bfd != (bfd *) NULL |
| 2478 | && (symbol->flags & BSF_SECTION_SYM) == 0 && reloc_entry->addend == 0) |
| 2479 | { |
| 2480 | reloc_entry->address += input_section->output_offset; |
| 2481 | return bfd_reloc_ok; |
| 2482 | } |
| 2483 | |
| 2484 | /* Sanity check the address (offset in section). */ |
| 2485 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 2486 | return bfd_reloc_outofrange; |
| 2487 | |
| 2488 | ret = bfd_reloc_ok; |
| 2489 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) |
| 2490 | ret = bfd_reloc_undefined; |
| 2491 | |
| 2492 | if (bfd_is_com_section (symbol->section)) |
| 2493 | relocation = 0; |
| 2494 | else |
| 2495 | relocation = symbol->value; |
| 2496 | |
| 2497 | relocation += symbol->section->output_section->vma; |
| 2498 | relocation += symbol->section->output_offset; |
| 2499 | relocation += reloc_entry->addend; |
| 2500 | |
| 2501 | /* Save the information, and let LO12 do the actual relocation. */ |
| 2502 | n = (struct nds32_hi20 *) bfd_malloc ((bfd_size_type) sizeof *n); |
| 2503 | if (n == NULL) |
| 2504 | return bfd_reloc_outofrange; |
| 2505 | |
| 2506 | n->addr = (bfd_byte *) data + reloc_entry->address; |
| 2507 | n->addend = relocation; |
| 2508 | n->next = nds32_hi20_list; |
| 2509 | nds32_hi20_list = n; |
| 2510 | |
| 2511 | if (output_bfd != (bfd *) NULL) |
| 2512 | reloc_entry->address += input_section->output_offset; |
| 2513 | |
| 2514 | return ret; |
| 2515 | } |
| 2516 | |
| 2517 | /* Handle an NDS32 ELF HI20 reloc. */ |
| 2518 | |
| 2519 | static void |
| 2520 | nds32_elf_relocate_hi20 (bfd *input_bfd ATTRIBUTE_UNUSED, |
| 2521 | int type ATTRIBUTE_UNUSED, Elf_Internal_Rela *relhi, |
| 2522 | Elf_Internal_Rela *rello, bfd_byte *contents, |
| 2523 | bfd_vma addend) |
| 2524 | { |
| 2525 | unsigned long insn; |
| 2526 | bfd_vma addlo; |
| 2527 | |
| 2528 | insn = bfd_getb32 (contents + relhi->r_offset); |
| 2529 | |
| 2530 | addlo = bfd_getb32 (contents + rello->r_offset); |
| 2531 | addlo &= 0xfff; |
| 2532 | |
| 2533 | addend += ((insn & 0xfffff) << 20) + addlo; |
| 2534 | |
| 2535 | insn = (insn & 0xfff00000) | ((addend >> 12) & 0xfffff); |
| 2536 | bfd_putb32 (insn, contents + relhi->r_offset); |
| 2537 | } |
| 2538 | |
| 2539 | /* Do an R_NDS32_LO12 relocation. This is a straightforward 12 bit |
| 2540 | inplace relocation; this function exists in order to do the |
| 2541 | R_NDS32_HI20_[SU]LO relocation described above. */ |
| 2542 | |
| 2543 | static bfd_reloc_status_type |
| 2544 | nds32_elf_lo12_reloc (bfd *input_bfd, arelent *reloc_entry, asymbol *symbol, |
| 2545 | void *data, asection *input_section, bfd *output_bfd, |
| 2546 | char **error_message) |
| 2547 | { |
| 2548 | /* This part is from bfd_elf_generic_reloc. |
| 2549 | If we're relocating, and this an external symbol, we don't want |
| 2550 | to change anything. */ |
| 2551 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 2552 | && reloc_entry->addend == 0) |
| 2553 | { |
| 2554 | reloc_entry->address += input_section->output_offset; |
| 2555 | return bfd_reloc_ok; |
| 2556 | } |
| 2557 | |
| 2558 | if (nds32_hi20_list != NULL) |
| 2559 | { |
| 2560 | struct nds32_hi20 *l; |
| 2561 | |
| 2562 | l = nds32_hi20_list; |
| 2563 | while (l != NULL) |
| 2564 | { |
| 2565 | unsigned long insn; |
| 2566 | unsigned long val; |
| 2567 | unsigned long vallo; |
| 2568 | struct nds32_hi20 *next; |
| 2569 | |
| 2570 | /* Do the HI20 relocation. Note that we actually don't need |
| 2571 | to know anything about the LO12 itself, except where to |
| 2572 | find the low 12 bits of the addend needed by the LO12. */ |
| 2573 | insn = bfd_getb32 (l->addr); |
| 2574 | vallo = bfd_getb32 ((bfd_byte *) data + reloc_entry->address); |
| 2575 | vallo &= 0xfff; |
| 2576 | switch (reloc_entry->howto->type) |
| 2577 | { |
| 2578 | case R_NDS32_LO12S3: |
| 2579 | vallo <<= 3; |
| 2580 | break; |
| 2581 | |
| 2582 | case R_NDS32_LO12S2: |
| 2583 | vallo <<= 2; |
| 2584 | break; |
| 2585 | |
| 2586 | case R_NDS32_LO12S1: |
| 2587 | vallo <<= 1; |
| 2588 | break; |
| 2589 | |
| 2590 | case R_NDS32_LO12S0: |
| 2591 | vallo <<= 0; |
| 2592 | break; |
| 2593 | } |
| 2594 | |
| 2595 | val = ((insn & 0xfffff) << 12) + vallo; |
| 2596 | val += l->addend; |
| 2597 | |
| 2598 | insn = (insn & ~(bfd_vma) 0xfffff) | ((val >> 12) & 0xfffff); |
| 2599 | bfd_putb32 ((bfd_vma) insn, l->addr); |
| 2600 | |
| 2601 | next = l->next; |
| 2602 | free (l); |
| 2603 | l = next; |
| 2604 | } |
| 2605 | |
| 2606 | nds32_hi20_list = NULL; |
| 2607 | } |
| 2608 | |
| 2609 | /* Now do the LO12 reloc in the usual way. |
| 2610 | ??? It would be nice to call bfd_elf_generic_reloc here, |
| 2611 | but we have partial_inplace set. bfd_elf_generic_reloc will |
| 2612 | pass the handling back to bfd_install_relocation which will install |
| 2613 | a section relative addend which is wrong. */ |
| 2614 | return nds32_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, |
| 2615 | input_section, output_bfd, error_message); |
| 2616 | } |
| 2617 | |
| 2618 | /* Do generic partial_inplace relocation. |
| 2619 | This is a local replacement for bfd_elf_generic_reloc. */ |
| 2620 | |
| 2621 | static bfd_reloc_status_type |
| 2622 | nds32_elf_generic_reloc (bfd *input_bfd, arelent *reloc_entry, |
| 2623 | asymbol *symbol, void *data, asection *input_section, |
| 2624 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
| 2625 | { |
| 2626 | bfd_reloc_status_type ret; |
| 2627 | bfd_vma relocation; |
| 2628 | bfd_byte *inplace_address; |
| 2629 | |
| 2630 | /* This part is from bfd_elf_generic_reloc. |
| 2631 | If we're relocating, and this an external symbol, we don't want |
| 2632 | to change anything. */ |
| 2633 | if (output_bfd != NULL && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 2634 | && reloc_entry->addend == 0) |
| 2635 | { |
| 2636 | reloc_entry->address += input_section->output_offset; |
| 2637 | return bfd_reloc_ok; |
| 2638 | } |
| 2639 | |
| 2640 | /* Now do the reloc in the usual way. |
| 2641 | ??? It would be nice to call bfd_elf_generic_reloc here, |
| 2642 | but we have partial_inplace set. bfd_elf_generic_reloc will |
| 2643 | pass the handling back to bfd_install_relocation which will install |
| 2644 | a section relative addend which is wrong. */ |
| 2645 | |
| 2646 | /* Sanity check the address (offset in section). */ |
| 2647 | if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) |
| 2648 | return bfd_reloc_outofrange; |
| 2649 | |
| 2650 | ret = bfd_reloc_ok; |
| 2651 | if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL) |
| 2652 | ret = bfd_reloc_undefined; |
| 2653 | |
| 2654 | if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL) |
| 2655 | relocation = 0; |
| 2656 | else |
| 2657 | relocation = symbol->value; |
| 2658 | |
| 2659 | /* Only do this for a final link. */ |
| 2660 | if (output_bfd == (bfd *) NULL) |
| 2661 | { |
| 2662 | relocation += symbol->section->output_section->vma; |
| 2663 | relocation += symbol->section->output_offset; |
| 2664 | } |
| 2665 | |
| 2666 | relocation += reloc_entry->addend; |
| 2667 | switch (reloc_entry->howto->type) |
| 2668 | { |
| 2669 | case R_NDS32_LO12S3: |
| 2670 | relocation >>= 3; |
| 2671 | break; |
| 2672 | |
| 2673 | case R_NDS32_LO12S2: |
| 2674 | relocation >>= 2; |
| 2675 | break; |
| 2676 | |
| 2677 | case R_NDS32_LO12S1: |
| 2678 | relocation >>= 1; |
| 2679 | break; |
| 2680 | |
| 2681 | case R_NDS32_LO12S0: |
| 2682 | default: |
| 2683 | relocation >>= 0; |
| 2684 | break; |
| 2685 | } |
| 2686 | |
| 2687 | inplace_address = (bfd_byte *) data + reloc_entry->address; |
| 2688 | |
| 2689 | #define DOIT(x) \ |
| 2690 | x = ((x & ~reloc_entry->howto->dst_mask) | \ |
| 2691 | (((x & reloc_entry->howto->src_mask) + relocation) & \ |
| 2692 | reloc_entry->howto->dst_mask)) |
| 2693 | |
| 2694 | switch (reloc_entry->howto->size) |
| 2695 | { |
| 2696 | case 1: |
| 2697 | { |
| 2698 | short x = bfd_getb16 (inplace_address); |
| 2699 | |
| 2700 | DOIT (x); |
| 2701 | bfd_putb16 ((bfd_vma) x, inplace_address); |
| 2702 | } |
| 2703 | break; |
| 2704 | case 2: |
| 2705 | { |
| 2706 | unsigned long x = bfd_getb32 (inplace_address); |
| 2707 | |
| 2708 | DOIT (x); |
| 2709 | bfd_putb32 ((bfd_vma) x, inplace_address); |
| 2710 | } |
| 2711 | break; |
| 2712 | default: |
| 2713 | BFD_ASSERT (0); |
| 2714 | } |
| 2715 | |
| 2716 | if (output_bfd != (bfd *) NULL) |
| 2717 | reloc_entry->address += input_section->output_offset; |
| 2718 | |
| 2719 | return ret; |
| 2720 | } |
| 2721 | |
| 2722 | /* Handle the R_NDS32_SDA15 reloc. |
| 2723 | This reloc is used to compute the address of objects in the small data area |
| 2724 | and to perform loads and stores from that area. |
| 2725 | The lower 15 bits are sign extended and added to the register specified |
| 2726 | in the instruction, which is assumed to point to _SDA_BASE_. |
| 2727 | |
| 2728 | Since the lower 15 bits offset is left-shifted 0, 1 or 2 bits depending on |
| 2729 | the access size, this must be taken care of. */ |
| 2730 | |
| 2731 | static bfd_reloc_status_type |
| 2732 | nds32_elf_sda15_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
| 2733 | asymbol *symbol, void *data ATTRIBUTE_UNUSED, |
| 2734 | asection *input_section, bfd *output_bfd, |
| 2735 | char **error_message ATTRIBUTE_UNUSED) |
| 2736 | { |
| 2737 | /* This part is from bfd_elf_generic_reloc. */ |
| 2738 | if (output_bfd != (bfd *) NULL |
| 2739 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 2740 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) |
| 2741 | { |
| 2742 | reloc_entry->address += input_section->output_offset; |
| 2743 | return bfd_reloc_ok; |
| 2744 | } |
| 2745 | |
| 2746 | if (output_bfd != NULL) |
| 2747 | { |
| 2748 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 2749 | return bfd_reloc_continue; |
| 2750 | } |
| 2751 | |
| 2752 | /* FIXME: not sure what to do here yet. But then again, the linker |
| 2753 | may never call us. */ |
| 2754 | abort (); |
| 2755 | } |
| 2756 | |
| 2757 | /* nds32_elf_ignore_reloc is the special function for |
| 2758 | relocation types which don't need to be relocated |
| 2759 | like relaxation relocation types. |
| 2760 | This function simply return bfd_reloc_ok when it is |
| 2761 | invoked. */ |
| 2762 | |
| 2763 | static bfd_reloc_status_type |
| 2764 | nds32_elf_ignore_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry, |
| 2765 | asymbol *symbol ATTRIBUTE_UNUSED, |
| 2766 | void *data ATTRIBUTE_UNUSED, asection *input_section, |
| 2767 | bfd *output_bfd, char **error_message ATTRIBUTE_UNUSED) |
| 2768 | { |
| 2769 | if (output_bfd != NULL) |
| 2770 | reloc_entry->address += input_section->output_offset; |
| 2771 | |
| 2772 | return bfd_reloc_ok; |
| 2773 | } |
| 2774 | \f |
| 2775 | |
| 2776 | /* Map BFD reloc types to NDS32 ELF reloc types. */ |
| 2777 | |
| 2778 | struct nds32_reloc_map_entry |
| 2779 | { |
| 2780 | bfd_reloc_code_real_type bfd_reloc_val; |
| 2781 | unsigned char elf_reloc_val; |
| 2782 | }; |
| 2783 | |
| 2784 | static const struct nds32_reloc_map_entry nds32_reloc_map[] = |
| 2785 | { |
| 2786 | {BFD_RELOC_NONE, R_NDS32_NONE}, |
| 2787 | {BFD_RELOC_16, R_NDS32_16_RELA}, |
| 2788 | {BFD_RELOC_32, R_NDS32_32_RELA}, |
| 2789 | {BFD_RELOC_NDS32_20, R_NDS32_20_RELA}, |
| 2790 | {BFD_RELOC_NDS32_5, R_NDS32_5_RELA}, |
| 2791 | {BFD_RELOC_NDS32_9_PCREL, R_NDS32_9_PCREL_RELA}, |
| 2792 | {BFD_RELOC_NDS32_WORD_9_PCREL, R_NDS32_WORD_9_PCREL_RELA}, |
| 2793 | {BFD_RELOC_NDS32_15_PCREL, R_NDS32_15_PCREL_RELA}, |
| 2794 | {BFD_RELOC_NDS32_17_PCREL, R_NDS32_17_PCREL_RELA}, |
| 2795 | {BFD_RELOC_NDS32_25_PCREL, R_NDS32_25_PCREL_RELA}, |
| 2796 | {BFD_RELOC_NDS32_10_UPCREL, R_NDS32_10_UPCREL_RELA}, |
| 2797 | {BFD_RELOC_NDS32_HI20, R_NDS32_HI20_RELA}, |
| 2798 | {BFD_RELOC_NDS32_LO12S3, R_NDS32_LO12S3_RELA}, |
| 2799 | {BFD_RELOC_NDS32_LO12S2, R_NDS32_LO12S2_RELA}, |
| 2800 | {BFD_RELOC_NDS32_LO12S1, R_NDS32_LO12S1_RELA}, |
| 2801 | {BFD_RELOC_NDS32_LO12S0, R_NDS32_LO12S0_RELA}, |
| 2802 | {BFD_RELOC_NDS32_LO12S0_ORI, R_NDS32_LO12S0_ORI_RELA}, |
| 2803 | {BFD_RELOC_NDS32_SDA15S3, R_NDS32_SDA15S3_RELA}, |
| 2804 | {BFD_RELOC_NDS32_SDA15S2, R_NDS32_SDA15S2_RELA}, |
| 2805 | {BFD_RELOC_NDS32_SDA15S1, R_NDS32_SDA15S1_RELA}, |
| 2806 | {BFD_RELOC_NDS32_SDA15S0, R_NDS32_SDA15S0_RELA}, |
| 2807 | {BFD_RELOC_VTABLE_INHERIT, R_NDS32_RELA_GNU_VTINHERIT}, |
| 2808 | {BFD_RELOC_VTABLE_ENTRY, R_NDS32_RELA_GNU_VTENTRY}, |
| 2809 | |
| 2810 | {BFD_RELOC_NDS32_GOT20, R_NDS32_GOT20}, |
| 2811 | {BFD_RELOC_NDS32_9_PLTREL, R_NDS32_9_PLTREL}, |
| 2812 | {BFD_RELOC_NDS32_25_PLTREL, R_NDS32_25_PLTREL}, |
| 2813 | {BFD_RELOC_NDS32_COPY, R_NDS32_COPY}, |
| 2814 | {BFD_RELOC_NDS32_GLOB_DAT, R_NDS32_GLOB_DAT}, |
| 2815 | {BFD_RELOC_NDS32_JMP_SLOT, R_NDS32_JMP_SLOT}, |
| 2816 | {BFD_RELOC_NDS32_RELATIVE, R_NDS32_RELATIVE}, |
| 2817 | {BFD_RELOC_NDS32_GOTOFF, R_NDS32_GOTOFF}, |
| 2818 | {BFD_RELOC_NDS32_GOTPC20, R_NDS32_GOTPC20}, |
| 2819 | {BFD_RELOC_NDS32_GOT_HI20, R_NDS32_GOT_HI20}, |
| 2820 | {BFD_RELOC_NDS32_GOT_LO12, R_NDS32_GOT_LO12}, |
| 2821 | {BFD_RELOC_NDS32_GOT_LO15, R_NDS32_GOT_LO15}, |
| 2822 | {BFD_RELOC_NDS32_GOT_LO19, R_NDS32_GOT_LO19}, |
| 2823 | {BFD_RELOC_NDS32_GOTPC_HI20, R_NDS32_GOTPC_HI20}, |
| 2824 | {BFD_RELOC_NDS32_GOTPC_LO12, R_NDS32_GOTPC_LO12}, |
| 2825 | {BFD_RELOC_NDS32_GOTOFF_HI20, R_NDS32_GOTOFF_HI20}, |
| 2826 | {BFD_RELOC_NDS32_GOTOFF_LO12, R_NDS32_GOTOFF_LO12}, |
| 2827 | {BFD_RELOC_NDS32_GOTOFF_LO15, R_NDS32_GOTOFF_LO15}, |
| 2828 | {BFD_RELOC_NDS32_GOTOFF_LO19, R_NDS32_GOTOFF_LO19}, |
| 2829 | {BFD_RELOC_NDS32_INSN16, R_NDS32_INSN16}, |
| 2830 | {BFD_RELOC_NDS32_LABEL, R_NDS32_LABEL}, |
| 2831 | {BFD_RELOC_NDS32_LONGCALL1, R_NDS32_LONGCALL1}, |
| 2832 | {BFD_RELOC_NDS32_LONGCALL2, R_NDS32_LONGCALL2}, |
| 2833 | {BFD_RELOC_NDS32_LONGCALL3, R_NDS32_LONGCALL3}, |
| 2834 | {BFD_RELOC_NDS32_LONGCALL4, R_NDS32_LONGCALL4}, |
| 2835 | {BFD_RELOC_NDS32_LONGCALL5, R_NDS32_LONGCALL5}, |
| 2836 | {BFD_RELOC_NDS32_LONGCALL6, R_NDS32_LONGCALL6}, |
| 2837 | {BFD_RELOC_NDS32_LONGJUMP1, R_NDS32_LONGJUMP1}, |
| 2838 | {BFD_RELOC_NDS32_LONGJUMP2, R_NDS32_LONGJUMP2}, |
| 2839 | {BFD_RELOC_NDS32_LONGJUMP3, R_NDS32_LONGJUMP3}, |
| 2840 | {BFD_RELOC_NDS32_LONGJUMP4, R_NDS32_LONGJUMP4}, |
| 2841 | {BFD_RELOC_NDS32_LONGJUMP5, R_NDS32_LONGJUMP5}, |
| 2842 | {BFD_RELOC_NDS32_LONGJUMP6, R_NDS32_LONGJUMP6}, |
| 2843 | {BFD_RELOC_NDS32_LONGJUMP7, R_NDS32_LONGJUMP7}, |
| 2844 | {BFD_RELOC_NDS32_LOADSTORE, R_NDS32_LOADSTORE}, |
| 2845 | {BFD_RELOC_NDS32_9_FIXED, R_NDS32_9_FIXED_RELA}, |
| 2846 | {BFD_RELOC_NDS32_15_FIXED, R_NDS32_15_FIXED_RELA}, |
| 2847 | {BFD_RELOC_NDS32_17_FIXED, R_NDS32_17_FIXED_RELA}, |
| 2848 | {BFD_RELOC_NDS32_25_FIXED, R_NDS32_25_FIXED_RELA}, |
| 2849 | {BFD_RELOC_NDS32_PLTREL_HI20, R_NDS32_PLTREL_HI20}, |
| 2850 | {BFD_RELOC_NDS32_PLTREL_LO12, R_NDS32_PLTREL_LO12}, |
| 2851 | {BFD_RELOC_NDS32_PLT_GOTREL_HI20, R_NDS32_PLT_GOTREL_HI20}, |
| 2852 | {BFD_RELOC_NDS32_PLT_GOTREL_LO12, R_NDS32_PLT_GOTREL_LO12}, |
| 2853 | {BFD_RELOC_NDS32_PLT_GOTREL_LO15, R_NDS32_PLT_GOTREL_LO15}, |
| 2854 | {BFD_RELOC_NDS32_PLT_GOTREL_LO19, R_NDS32_PLT_GOTREL_LO19}, |
| 2855 | {BFD_RELOC_NDS32_PLT_GOTREL_LO20, R_NDS32_PLT_GOTREL_LO20}, |
| 2856 | {BFD_RELOC_NDS32_SDA12S2_DP, R_NDS32_SDA12S2_DP_RELA}, |
| 2857 | {BFD_RELOC_NDS32_SDA12S2_SP, R_NDS32_SDA12S2_SP_RELA}, |
| 2858 | {BFD_RELOC_NDS32_LO12S2_DP, R_NDS32_LO12S2_DP_RELA}, |
| 2859 | {BFD_RELOC_NDS32_LO12S2_SP, R_NDS32_LO12S2_SP_RELA}, |
| 2860 | {BFD_RELOC_NDS32_SDA16S3, R_NDS32_SDA16S3_RELA}, |
| 2861 | {BFD_RELOC_NDS32_SDA17S2, R_NDS32_SDA17S2_RELA}, |
| 2862 | {BFD_RELOC_NDS32_SDA18S1, R_NDS32_SDA18S1_RELA}, |
| 2863 | {BFD_RELOC_NDS32_SDA19S0, R_NDS32_SDA19S0_RELA}, |
| 2864 | {BFD_RELOC_NDS32_SDA_FP7U2_RELA, R_NDS32_SDA_FP7U2_RELA}, |
| 2865 | {BFD_RELOC_NDS32_DWARF2_OP1, R_NDS32_DWARF2_OP1_RELA}, |
| 2866 | {BFD_RELOC_NDS32_DWARF2_OP2, R_NDS32_DWARF2_OP2_RELA}, |
| 2867 | {BFD_RELOC_NDS32_DWARF2_LEB, R_NDS32_DWARF2_LEB_RELA}, |
| 2868 | {BFD_RELOC_NDS32_UPDATE_TA, R_NDS32_UPDATE_TA_RELA}, |
| 2869 | {BFD_RELOC_NDS32_GOT_SUFF, R_NDS32_GOT_SUFF}, |
| 2870 | {BFD_RELOC_NDS32_GOTOFF_SUFF, R_NDS32_GOTOFF_SUFF}, |
| 2871 | {BFD_RELOC_NDS32_GOT15S2, R_NDS32_GOT15S2_RELA}, |
| 2872 | {BFD_RELOC_NDS32_GOT17S2, R_NDS32_GOT17S2_RELA}, |
| 2873 | {BFD_RELOC_NDS32_PTR, R_NDS32_PTR}, |
| 2874 | {BFD_RELOC_NDS32_PTR_COUNT, R_NDS32_PTR_COUNT}, |
| 2875 | {BFD_RELOC_NDS32_PLT_GOT_SUFF, R_NDS32_PLT_GOT_SUFF}, |
| 2876 | {BFD_RELOC_NDS32_PTR_RESOLVED, R_NDS32_PTR_RESOLVED}, |
| 2877 | {BFD_RELOC_NDS32_RELAX_ENTRY, R_NDS32_RELAX_ENTRY}, |
| 2878 | {BFD_RELOC_NDS32_MULCALL_SUFF, R_NDS32_MULCALL_SUFF}, |
| 2879 | {BFD_RELOC_NDS32_PLTBLOCK, R_NDS32_PLTBLOCK}, |
| 2880 | {BFD_RELOC_NDS32_RELAX_REGION_BEGIN, R_NDS32_RELAX_REGION_BEGIN}, |
| 2881 | {BFD_RELOC_NDS32_RELAX_REGION_END, R_NDS32_RELAX_REGION_END}, |
| 2882 | {BFD_RELOC_NDS32_MINUEND, R_NDS32_MINUEND}, |
| 2883 | {BFD_RELOC_NDS32_SUBTRAHEND, R_NDS32_SUBTRAHEND}, |
| 2884 | {BFD_RELOC_NDS32_EMPTY, R_NDS32_EMPTY}, |
| 2885 | |
| 2886 | {BFD_RELOC_NDS32_DIFF8, R_NDS32_DIFF8}, |
| 2887 | {BFD_RELOC_NDS32_DIFF16, R_NDS32_DIFF16}, |
| 2888 | {BFD_RELOC_NDS32_DIFF32, R_NDS32_DIFF32}, |
| 2889 | {BFD_RELOC_NDS32_DIFF_ULEB128, R_NDS32_DIFF_ULEB128}, |
| 2890 | {BFD_RELOC_NDS32_25_ABS, R_NDS32_25_ABS_RELA}, |
| 2891 | {BFD_RELOC_NDS32_DATA, R_NDS32_DATA}, |
| 2892 | {BFD_RELOC_NDS32_TRAN, R_NDS32_TRAN}, |
| 2893 | {BFD_RELOC_NDS32_17IFC_PCREL, R_NDS32_17IFC_PCREL_RELA}, |
| 2894 | {BFD_RELOC_NDS32_10IFCU_PCREL, R_NDS32_10IFCU_PCREL_RELA}, |
| 2895 | {BFD_RELOC_NDS32_TLS_LE_HI20, R_NDS32_TLS_LE_HI20}, |
| 2896 | {BFD_RELOC_NDS32_TLS_LE_LO12, R_NDS32_TLS_LE_LO12}, |
| 2897 | {BFD_RELOC_NDS32_TLS_LE_ADD, R_NDS32_TLS_LE_ADD}, |
| 2898 | {BFD_RELOC_NDS32_TLS_LE_LS, R_NDS32_TLS_LE_LS}, |
| 2899 | {BFD_RELOC_NDS32_TLS_IE_HI20, R_NDS32_TLS_IE_HI20}, |
| 2900 | {BFD_RELOC_NDS32_TLS_IE_LO12S2, R_NDS32_TLS_IE_LO12S2}, |
| 2901 | {BFD_RELOC_NDS32_TLS_TPOFF, R_NDS32_TLS_TPOFF}, |
| 2902 | {BFD_RELOC_NDS32_TLS_LE_20, R_NDS32_TLS_LE_20}, |
| 2903 | {BFD_RELOC_NDS32_TLS_LE_15S0, R_NDS32_TLS_LE_15S0}, |
| 2904 | {BFD_RELOC_NDS32_TLS_LE_15S1, R_NDS32_TLS_LE_15S1}, |
| 2905 | {BFD_RELOC_NDS32_TLS_LE_15S2, R_NDS32_TLS_LE_15S2}, |
| 2906 | }; |
| 2907 | |
| 2908 | /* Patch tag. */ |
| 2909 | |
| 2910 | static reloc_howto_type * |
| 2911 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2912 | const char *r_name) |
| 2913 | { |
| 2914 | unsigned int i; |
| 2915 | |
| 2916 | for (i = 0; i < ARRAY_SIZE (nds32_elf_howto_table); i++) |
| 2917 | if (nds32_elf_howto_table[i].name != NULL |
| 2918 | && strcasecmp (nds32_elf_howto_table[i].name, r_name) == 0) |
| 2919 | return &nds32_elf_howto_table[i]; |
| 2920 | |
| 2921 | for (i = 0; i < ARRAY_SIZE (nds32_elf_relax_howto_table); i++) |
| 2922 | if (nds32_elf_relax_howto_table[i].name != NULL |
| 2923 | && strcasecmp (nds32_elf_relax_howto_table[i].name, r_name) == 0) |
| 2924 | return &nds32_elf_relax_howto_table[i]; |
| 2925 | |
| 2926 | return NULL; |
| 2927 | } |
| 2928 | |
| 2929 | static reloc_howto_type * |
| 2930 | bfd_elf32_bfd_reloc_type_table_lookup (enum elf_nds32_reloc_type code) |
| 2931 | { |
| 2932 | if (code < R_NDS32_RELAX_ENTRY) |
| 2933 | { |
| 2934 | BFD_ASSERT (code < ARRAY_SIZE (nds32_elf_howto_table)); |
| 2935 | return &nds32_elf_howto_table[code]; |
| 2936 | } |
| 2937 | else |
| 2938 | { |
| 2939 | BFD_ASSERT ((size_t) (code - R_NDS32_RELAX_ENTRY) |
| 2940 | < ARRAY_SIZE (nds32_elf_relax_howto_table)); |
| 2941 | return &nds32_elf_relax_howto_table[code - R_NDS32_RELAX_ENTRY]; |
| 2942 | } |
| 2943 | } |
| 2944 | |
| 2945 | static reloc_howto_type * |
| 2946 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2947 | bfd_reloc_code_real_type code) |
| 2948 | { |
| 2949 | unsigned int i; |
| 2950 | |
| 2951 | for (i = 0; i < ARRAY_SIZE (nds32_reloc_map); i++) |
| 2952 | { |
| 2953 | if (nds32_reloc_map[i].bfd_reloc_val == code) |
| 2954 | return bfd_elf32_bfd_reloc_type_table_lookup |
| 2955 | (nds32_reloc_map[i].elf_reloc_val); |
| 2956 | } |
| 2957 | |
| 2958 | return NULL; |
| 2959 | } |
| 2960 | |
| 2961 | /* Set the howto pointer for an NDS32 ELF reloc. */ |
| 2962 | |
| 2963 | static void |
| 2964 | nds32_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2965 | Elf_Internal_Rela *dst) |
| 2966 | { |
| 2967 | enum elf_nds32_reloc_type r_type; |
| 2968 | |
| 2969 | r_type = ELF32_R_TYPE (dst->r_info); |
| 2970 | if (r_type > R_NDS32_GNU_VTENTRY) |
| 2971 | { |
| 2972 | _bfd_error_handler (_("%B: invalid NDS32 reloc number: %d"), abfd, r_type); |
| 2973 | r_type = 0; |
| 2974 | } |
| 2975 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); |
| 2976 | } |
| 2977 | |
| 2978 | static void |
| 2979 | nds32_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2980 | Elf_Internal_Rela *dst) |
| 2981 | { |
| 2982 | BFD_ASSERT ((ELF32_R_TYPE (dst->r_info) == R_NDS32_NONE) |
| 2983 | || ((ELF32_R_TYPE (dst->r_info) > R_NDS32_GNU_VTENTRY) |
| 2984 | && (ELF32_R_TYPE (dst->r_info) < R_NDS32_max))); |
| 2985 | cache_ptr->howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (dst->r_info)); |
| 2986 | } |
| 2987 | |
| 2988 | /* Support for core dump NOTE sections. |
| 2989 | Reference to include/linux/elfcore.h in Linux. */ |
| 2990 | |
| 2991 | static bfd_boolean |
| 2992 | nds32_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) |
| 2993 | { |
| 2994 | int offset; |
| 2995 | size_t size; |
| 2996 | |
| 2997 | switch (note->descsz) |
| 2998 | { |
| 2999 | case 0x114: |
| 3000 | /* Linux/NDS32 32-bit, ABI1 */ |
| 3001 | |
| 3002 | /* pr_cursig */ |
| 3003 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| 3004 | |
| 3005 | /* pr_pid */ |
| 3006 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); |
| 3007 | |
| 3008 | /* pr_reg */ |
| 3009 | offset = 72; |
| 3010 | size = 200; |
| 3011 | break; |
| 3012 | |
| 3013 | case 0xfc: |
| 3014 | /* Linux/NDS32 32-bit */ |
| 3015 | |
| 3016 | /* pr_cursig */ |
| 3017 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| 3018 | |
| 3019 | /* pr_pid */ |
| 3020 | elf_tdata (abfd)->core->pid = bfd_get_32 (abfd, note->descdata + 24); |
| 3021 | |
| 3022 | /* pr_reg */ |
| 3023 | offset = 72; |
| 3024 | size = 176; |
| 3025 | break; |
| 3026 | |
| 3027 | default: |
| 3028 | return FALSE; |
| 3029 | } |
| 3030 | |
| 3031 | /* Make a ".reg" section. */ |
| 3032 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 3033 | size, note->descpos + offset); |
| 3034 | } |
| 3035 | |
| 3036 | static bfd_boolean |
| 3037 | nds32_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) |
| 3038 | { |
| 3039 | switch (note->descsz) |
| 3040 | { |
| 3041 | case 124: |
| 3042 | /* Linux/NDS32 */ |
| 3043 | |
| 3044 | /* __kernel_uid_t, __kernel_gid_t are short on NDS32 platform. */ |
| 3045 | elf_tdata (abfd)->core->program = |
| 3046 | _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); |
| 3047 | elf_tdata (abfd)->core->command = |
| 3048 | _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); |
| 3049 | |
| 3050 | default: |
| 3051 | return FALSE; |
| 3052 | } |
| 3053 | |
| 3054 | /* Note that for some reason, a spurious space is tacked |
| 3055 | onto the end of the args in some (at least one anyway) |
| 3056 | implementations, so strip it off if it exists. */ |
| 3057 | { |
| 3058 | char *command = elf_tdata (abfd)->core->command; |
| 3059 | int n = strlen (command); |
| 3060 | |
| 3061 | if (0 < n && command[n - 1] == ' ') |
| 3062 | command[n - 1] = '\0'; |
| 3063 | } |
| 3064 | |
| 3065 | return TRUE; |
| 3066 | } |
| 3067 | |
| 3068 | /* Hook called by the linker routine which adds symbols from an object |
| 3069 | file. We must handle the special NDS32 section numbers here. |
| 3070 | We also keep watching for whether we need to create the sdata special |
| 3071 | linker sections. */ |
| 3072 | |
| 3073 | static bfd_boolean |
| 3074 | nds32_elf_add_symbol_hook (bfd *abfd, |
| 3075 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3076 | Elf_Internal_Sym *sym, |
| 3077 | const char **namep ATTRIBUTE_UNUSED, |
| 3078 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 3079 | asection **secp, bfd_vma *valp) |
| 3080 | { |
| 3081 | switch (sym->st_shndx) |
| 3082 | { |
| 3083 | case SHN_COMMON: |
| 3084 | /* Common symbols less than the GP size are automatically |
| 3085 | treated as SHN_MIPS_SCOMMON symbols. */ |
| 3086 | if (sym->st_size > elf_gp_size (abfd) |
| 3087 | || ELF_ST_TYPE (sym->st_info) == STT_TLS) |
| 3088 | break; |
| 3089 | |
| 3090 | /* st_value is the alignemnt constraint. |
| 3091 | That might be its actual size if it is an array or structure. */ |
| 3092 | switch (sym->st_value) |
| 3093 | { |
| 3094 | case 1: |
| 3095 | *secp = bfd_make_section_old_way (abfd, ".scommon_b"); |
| 3096 | break; |
| 3097 | case 2: |
| 3098 | *secp = bfd_make_section_old_way (abfd, ".scommon_h"); |
| 3099 | break; |
| 3100 | case 4: |
| 3101 | *secp = bfd_make_section_old_way (abfd, ".scommon_w"); |
| 3102 | break; |
| 3103 | case 8: |
| 3104 | *secp = bfd_make_section_old_way (abfd, ".scommon_d"); |
| 3105 | break; |
| 3106 | default: |
| 3107 | return TRUE; |
| 3108 | } |
| 3109 | |
| 3110 | (*secp)->flags |= SEC_IS_COMMON; |
| 3111 | *valp = sym->st_size; |
| 3112 | break; |
| 3113 | } |
| 3114 | |
| 3115 | return TRUE; |
| 3116 | } |
| 3117 | |
| 3118 | |
| 3119 | /* This function can figure out the best location for a base register to access |
| 3120 | data relative to this base register |
| 3121 | INPUT: |
| 3122 | sda_d0: size of first DOUBLE WORD data section |
| 3123 | sda_w0: size of first WORD data section |
| 3124 | sda_h0: size of first HALF WORD data section |
| 3125 | sda_b : size of BYTE data section |
| 3126 | sda_hi: size of second HALF WORD data section |
| 3127 | sda_w1: size of second WORD data section |
| 3128 | sda_d1: size of second DOUBLE WORD data section |
| 3129 | OUTPUT: |
| 3130 | offset (always positive) from the beginning of sda_d0 if OK |
| 3131 | a negative error value if fail |
| 3132 | NOTE: |
| 3133 | these 7 sections have to be located back to back if exist |
| 3134 | a pass in 0 value for non-existing section */ |
| 3135 | |
| 3136 | /* Due to the interpretation of simm15 field of load/store depending on |
| 3137 | data accessing size, the organization of base register relative data shall |
| 3138 | like the following figure |
| 3139 | ------------------------------------------- |
| 3140 | | DOUBLE WORD sized data (range +/- 128K) |
| 3141 | ------------------------------------------- |
| 3142 | | WORD sized data (range +/- 64K) |
| 3143 | ------------------------------------------- |
| 3144 | | HALF WORD sized data (range +/- 32K) |
| 3145 | ------------------------------------------- |
| 3146 | | BYTE sized data (range +/- 16K) |
| 3147 | ------------------------------------------- |
| 3148 | | HALF WORD sized data (range +/- 32K) |
| 3149 | ------------------------------------------- |
| 3150 | | WORD sized data (range +/- 64K) |
| 3151 | ------------------------------------------- |
| 3152 | | DOUBLE WORD sized data (range +/- 128K) |
| 3153 | ------------------------------------------- |
| 3154 | Its base register shall be set to access these data freely. */ |
| 3155 | |
| 3156 | /* We have to figure out the SDA_BASE value, so that we can adjust the |
| 3157 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output |
| 3158 | BFD. If we can't find it, we're stuck. We cache it in the ELF |
| 3159 | target data. We don't need to adjust the symbol value for an |
| 3160 | external symbol if we are producing relocatable output. */ |
| 3161 | |
| 3162 | static asection *sda_rela_sec = NULL; |
| 3163 | |
| 3164 | #define SDA_SECTION_NUM 10 |
| 3165 | |
| 3166 | static bfd_reloc_status_type |
| 3167 | nds32_elf_final_sda_base (bfd *output_bfd, struct bfd_link_info *info, |
| 3168 | bfd_vma *psb, bfd_boolean add_symbol) |
| 3169 | { |
| 3170 | int relax_fp_as_gp; |
| 3171 | struct elf_nds32_link_hash_table *table; |
| 3172 | struct bfd_link_hash_entry *h, *h2; |
| 3173 | long unsigned int total = 0; |
| 3174 | |
| 3175 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); |
| 3176 | if (!h || (h->type != bfd_link_hash_defined && h->type != bfd_link_hash_defweak)) |
| 3177 | { |
| 3178 | asection *first = NULL, *final = NULL, *temp; |
| 3179 | bfd_vma sda_base; |
| 3180 | /* The first section must be 4-byte aligned to promise _SDA_BASE_ being |
| 3181 | 4 byte-aligned. Therefore, it has to set the first section ".data" |
| 3182 | 4 byte-aligned. */ |
| 3183 | static const char sec_name[SDA_SECTION_NUM][10] = |
| 3184 | { |
| 3185 | ".data", ".got", ".sdata_d", ".sdata_w", ".sdata_h", ".sdata_b", |
| 3186 | ".sbss_b", ".sbss_h", ".sbss_w", ".sbss_d" |
| 3187 | }; |
| 3188 | size_t i = 0; |
| 3189 | |
| 3190 | if (output_bfd->sections == NULL) |
| 3191 | { |
| 3192 | *psb = elf_gp (output_bfd); |
| 3193 | return bfd_reloc_ok; |
| 3194 | } |
| 3195 | |
| 3196 | /* Get the first and final section. */ |
| 3197 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
| 3198 | { |
| 3199 | temp = bfd_get_section_by_name (output_bfd, sec_name[i]); |
| 3200 | if (temp && !first && (temp->size != 0 || temp->rawsize != 0)) |
| 3201 | first = temp; |
| 3202 | if (temp && (temp->size != 0 || temp->rawsize != 0)) |
| 3203 | final = temp; |
| 3204 | |
| 3205 | /* Summarize the sections in order to check if joining .bss. */ |
| 3206 | if (temp && temp->size != 0) |
| 3207 | total += temp->size; |
| 3208 | else if (temp && temp->rawsize != 0) |
| 3209 | total += temp->rawsize; |
| 3210 | |
| 3211 | i++; |
| 3212 | } |
| 3213 | |
| 3214 | /* Check .bss size. */ |
| 3215 | temp = bfd_get_section_by_name (output_bfd, ".bss"); |
| 3216 | if (temp) |
| 3217 | { |
| 3218 | if (temp->size != 0) |
| 3219 | total += temp->size; |
| 3220 | else if (temp->rawsize != 0) |
| 3221 | total += temp->rawsize; |
| 3222 | |
| 3223 | if (total < 0x80000) |
| 3224 | { |
| 3225 | if (!first && (temp->size != 0 || temp->rawsize != 0)) |
| 3226 | first = temp; |
| 3227 | if ((temp->size != 0 || temp->rawsize != 0)) |
| 3228 | final = temp; |
| 3229 | } |
| 3230 | } |
| 3231 | |
| 3232 | if (first && final) |
| 3233 | { |
| 3234 | /* The middle of data region. */ |
| 3235 | sda_base = final->vma / 2 + final->rawsize / 2 + first->vma / 2; |
| 3236 | |
| 3237 | /* Find the section sda_base located. */ |
| 3238 | i = 0; |
| 3239 | while (i < sizeof (sec_name) / sizeof (sec_name [0])) |
| 3240 | { |
| 3241 | final = bfd_get_section_by_name (output_bfd, sec_name[i]); |
| 3242 | if (final && (final->size != 0 || final->rawsize != 0) |
| 3243 | && sda_base >= final->vma) |
| 3244 | { |
| 3245 | first = final; |
| 3246 | i++; |
| 3247 | } |
| 3248 | else |
| 3249 | break; |
| 3250 | } |
| 3251 | } |
| 3252 | else |
| 3253 | { |
| 3254 | /* There is not any data section in output bfd, and set _SDA_BASE_ in |
| 3255 | first output section. */ |
| 3256 | first = output_bfd->sections; |
| 3257 | while (first && first->size == 0 && first->rawsize == 0) |
| 3258 | first = first->next; |
| 3259 | if (!first) |
| 3260 | { |
| 3261 | *psb = elf_gp (output_bfd); |
| 3262 | return bfd_reloc_ok; |
| 3263 | } |
| 3264 | sda_base = first->vma + first->rawsize; |
| 3265 | } |
| 3266 | |
| 3267 | sda_base -= first->vma; |
| 3268 | sda_base = sda_base & (~7); |
| 3269 | |
| 3270 | if (!_bfd_generic_link_add_one_symbol |
| 3271 | (info, output_bfd, "_SDA_BASE_", BSF_GLOBAL | BSF_WEAK, first, |
| 3272 | (bfd_vma) sda_base, (const char *) NULL, FALSE, |
| 3273 | get_elf_backend_data (output_bfd)->collect, &h)) |
| 3274 | return FALSE; |
| 3275 | |
| 3276 | sda_rela_sec = first; |
| 3277 | |
| 3278 | table = nds32_elf_hash_table (info); |
| 3279 | relax_fp_as_gp = table->relax_fp_as_gp; |
| 3280 | if (relax_fp_as_gp) |
| 3281 | { |
| 3282 | h2 = bfd_link_hash_lookup (info->hash, FP_BASE_NAME, |
| 3283 | FALSE, FALSE, FALSE); |
| 3284 | /* Define a weak FP_BASE_NAME here to prevent the undefined symbol. |
| 3285 | And set FP equal to SDA_BASE to do relaxation for |
| 3286 | la $fp, _FP_BASE_. */ |
| 3287 | if (!_bfd_generic_link_add_one_symbol |
| 3288 | (info, output_bfd, FP_BASE_NAME, BSF_GLOBAL | BSF_WEAK, |
| 3289 | first, (bfd_vma) sda_base, (const char *) NULL, |
| 3290 | FALSE, get_elf_backend_data (output_bfd)->collect, &h2)) |
| 3291 | return FALSE; |
| 3292 | } |
| 3293 | } |
| 3294 | |
| 3295 | if (add_symbol == TRUE) |
| 3296 | { |
| 3297 | if (h) |
| 3298 | { |
| 3299 | /* Now set gp. */ |
| 3300 | elf_gp (output_bfd) = (h->u.def.value |
| 3301 | + h->u.def.section->output_section->vma |
| 3302 | + h->u.def.section->output_offset); |
| 3303 | } |
| 3304 | else |
| 3305 | { |
| 3306 | (*_bfd_error_handler) (_("error: Can't find symbol: _SDA_BASE_.")); |
| 3307 | return bfd_reloc_dangerous; |
| 3308 | } |
| 3309 | } |
| 3310 | |
| 3311 | *psb = h->u.def.value + h->u.def.section->output_section->vma |
| 3312 | + h->u.def.section->output_offset; |
| 3313 | return bfd_reloc_ok; |
| 3314 | } |
| 3315 | \f |
| 3316 | |
| 3317 | /* Return size of a PLT entry. */ |
| 3318 | #define elf_nds32_sizeof_plt(info) PLT_ENTRY_SIZE |
| 3319 | |
| 3320 | |
| 3321 | /* Create an entry in an nds32 ELF linker hash table. */ |
| 3322 | |
| 3323 | static struct bfd_hash_entry * |
| 3324 | nds32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 3325 | struct bfd_hash_table *table, |
| 3326 | const char *string) |
| 3327 | { |
| 3328 | struct elf_nds32_link_hash_entry *ret; |
| 3329 | |
| 3330 | ret = (struct elf_nds32_link_hash_entry *) entry; |
| 3331 | |
| 3332 | /* Allocate the structure if it has not already been allocated by a |
| 3333 | subclass. */ |
| 3334 | if (ret == NULL) |
| 3335 | ret = (struct elf_nds32_link_hash_entry *) |
| 3336 | bfd_hash_allocate (table, sizeof (struct elf_nds32_link_hash_entry)); |
| 3337 | |
| 3338 | if (ret == NULL) |
| 3339 | return (struct bfd_hash_entry *) ret; |
| 3340 | |
| 3341 | /* Call the allocation method of the superclass. */ |
| 3342 | ret = (struct elf_nds32_link_hash_entry *) |
| 3343 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, table, string); |
| 3344 | |
| 3345 | if (ret != NULL) |
| 3346 | { |
| 3347 | struct elf_nds32_link_hash_entry *eh; |
| 3348 | |
| 3349 | eh = (struct elf_nds32_link_hash_entry *) ret; |
| 3350 | eh->dyn_relocs = NULL; |
| 3351 | eh->tls_type = GOT_UNKNOWN; |
| 3352 | } |
| 3353 | |
| 3354 | return (struct bfd_hash_entry *) ret; |
| 3355 | } |
| 3356 | |
| 3357 | /* Create an nds32 ELF linker hash table. */ |
| 3358 | |
| 3359 | static struct bfd_link_hash_table * |
| 3360 | nds32_elf_link_hash_table_create (bfd *abfd) |
| 3361 | { |
| 3362 | struct elf_nds32_link_hash_table *ret; |
| 3363 | |
| 3364 | bfd_size_type amt = sizeof (struct elf_nds32_link_hash_table); |
| 3365 | |
| 3366 | ret = (struct elf_nds32_link_hash_table *) bfd_zmalloc (amt); |
| 3367 | if (ret == NULL) |
| 3368 | return NULL; |
| 3369 | |
| 3370 | /* patch tag. */ |
| 3371 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 3372 | nds32_elf_link_hash_newfunc, |
| 3373 | sizeof (struct elf_nds32_link_hash_entry), |
| 3374 | NDS32_ELF_DATA)) |
| 3375 | { |
| 3376 | free (ret); |
| 3377 | return NULL; |
| 3378 | } |
| 3379 | |
| 3380 | ret->sgot = NULL; |
| 3381 | ret->sgotplt = NULL; |
| 3382 | ret->srelgot = NULL; |
| 3383 | ret->splt = NULL; |
| 3384 | ret->srelplt = NULL; |
| 3385 | ret->sdynbss = NULL; |
| 3386 | ret->srelbss = NULL; |
| 3387 | ret->sym_ld_script = NULL; |
| 3388 | ret->ex9_export_file = NULL; |
| 3389 | ret->ex9_import_file = NULL; |
| 3390 | |
| 3391 | return &ret->root.root; |
| 3392 | } |
| 3393 | |
| 3394 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
| 3395 | shortcuts to them in our hash table. */ |
| 3396 | |
| 3397 | static bfd_boolean |
| 3398 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 3399 | { |
| 3400 | struct elf_nds32_link_hash_table *htab; |
| 3401 | |
| 3402 | if (!_bfd_elf_create_got_section (dynobj, info)) |
| 3403 | return FALSE; |
| 3404 | |
| 3405 | htab = nds32_elf_hash_table (info); |
| 3406 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 3407 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 3408 | if (!htab->sgot || !htab->sgotplt) |
| 3409 | abort (); |
| 3410 | |
| 3411 | /* _bfd_elf_create_got_section will create it for us. */ |
| 3412 | htab->srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3413 | if (htab->srelgot == NULL |
| 3414 | || !bfd_set_section_flags (dynobj, htab->srelgot, |
| 3415 | (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 3416 | | SEC_IN_MEMORY | SEC_LINKER_CREATED |
| 3417 | | SEC_READONLY)) |
| 3418 | || !bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
| 3419 | return FALSE; |
| 3420 | |
| 3421 | return TRUE; |
| 3422 | } |
| 3423 | |
| 3424 | /* Create dynamic sections when linking against a dynamic object. */ |
| 3425 | |
| 3426 | static bfd_boolean |
| 3427 | nds32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 3428 | { |
| 3429 | struct elf_nds32_link_hash_table *htab; |
| 3430 | flagword flags, pltflags; |
| 3431 | register asection *s; |
| 3432 | const struct elf_backend_data *bed; |
| 3433 | int ptralign = 2; /* 32-bit */ |
| 3434 | |
| 3435 | bed = get_elf_backend_data (abfd); |
| 3436 | |
| 3437 | htab = nds32_elf_hash_table (info); |
| 3438 | |
| 3439 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 3440 | .rel[a].bss sections. */ |
| 3441 | |
| 3442 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 3443 | | SEC_LINKER_CREATED); |
| 3444 | |
| 3445 | pltflags = flags; |
| 3446 | pltflags |= SEC_CODE; |
| 3447 | if (bed->plt_not_loaded) |
| 3448 | pltflags &= ~(SEC_LOAD | SEC_HAS_CONTENTS); |
| 3449 | if (bed->plt_readonly) |
| 3450 | pltflags |= SEC_READONLY; |
| 3451 | |
| 3452 | s = bfd_make_section (abfd, ".plt"); |
| 3453 | htab->splt = s; |
| 3454 | if (s == NULL |
| 3455 | || !bfd_set_section_flags (abfd, s, pltflags) |
| 3456 | || !bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 3457 | return FALSE; |
| 3458 | |
| 3459 | if (bed->want_plt_sym) |
| 3460 | { |
| 3461 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 3462 | .plt section. */ |
| 3463 | struct bfd_link_hash_entry *bh = NULL; |
| 3464 | struct elf_link_hash_entry *h; |
| 3465 | |
| 3466 | if (!(_bfd_generic_link_add_one_symbol |
| 3467 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 3468 | (bfd_vma) 0, (const char *) NULL, FALSE, |
| 3469 | get_elf_backend_data (abfd)->collect, &bh))) |
| 3470 | return FALSE; |
| 3471 | |
| 3472 | h = (struct elf_link_hash_entry *) bh; |
| 3473 | h->def_regular = 1; |
| 3474 | h->type = STT_OBJECT; |
| 3475 | |
| 3476 | if (bfd_link_pic (info) && !bfd_elf_link_record_dynamic_symbol (info, h)) |
| 3477 | return FALSE; |
| 3478 | } |
| 3479 | |
| 3480 | s = bfd_make_section (abfd, |
| 3481 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt"); |
| 3482 | htab->srelplt = s; |
| 3483 | if (s == NULL |
| 3484 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 3485 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 3486 | return FALSE; |
| 3487 | |
| 3488 | if (htab->sgot == NULL && !create_got_section (abfd, info)) |
| 3489 | return FALSE; |
| 3490 | |
| 3491 | { |
| 3492 | const char *secname; |
| 3493 | char *relname; |
| 3494 | flagword secflags; |
| 3495 | asection *sec; |
| 3496 | |
| 3497 | for (sec = abfd->sections; sec; sec = sec->next) |
| 3498 | { |
| 3499 | secflags = bfd_get_section_flags (abfd, sec); |
| 3500 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) |
| 3501 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) |
| 3502 | continue; |
| 3503 | secname = bfd_get_section_name (abfd, sec); |
| 3504 | relname = (char *) bfd_malloc ((bfd_size_type) strlen (secname) + 6); |
| 3505 | strcpy (relname, ".rela"); |
| 3506 | strcat (relname, secname); |
| 3507 | if (bfd_get_section_by_name (abfd, secname)) |
| 3508 | continue; |
| 3509 | s = bfd_make_section (abfd, relname); |
| 3510 | if (s == NULL |
| 3511 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 3512 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 3513 | return FALSE; |
| 3514 | } |
| 3515 | } |
| 3516 | |
| 3517 | if (bed->want_dynbss) |
| 3518 | { |
| 3519 | /* The .dynbss section is a place to put symbols which are defined |
| 3520 | by dynamic objects, are referenced by regular objects, and are |
| 3521 | not functions. We must allocate space for them in the process |
| 3522 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 3523 | initialize them at run time. The linker script puts the .dynbss |
| 3524 | section into the .bss section of the final image. */ |
| 3525 | s = bfd_make_section (abfd, ".dynbss"); |
| 3526 | htab->sdynbss = s; |
| 3527 | if (s == NULL |
| 3528 | || !bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED)) |
| 3529 | return FALSE; |
| 3530 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 3531 | normally needed. We need to create it here, though, so that the |
| 3532 | linker will map it to an output section. We can't just create it |
| 3533 | only if we need it, because we will not know whether we need it |
| 3534 | until we have seen all the input files, and the first time the |
| 3535 | main linker code calls BFD after examining all the input files |
| 3536 | (size_dynamic_sections) the input sections have already been |
| 3537 | mapped to the output sections. If the section turns out not to |
| 3538 | be needed, we can discard it later. We will never need this |
| 3539 | section when generating a shared object, since they do not use |
| 3540 | copy relocs. */ |
| 3541 | if (!bfd_link_pic (info)) |
| 3542 | { |
| 3543 | s = bfd_make_section (abfd, (bed->default_use_rela_p |
| 3544 | ? ".rela.bss" : ".rel.bss")); |
| 3545 | htab->srelbss = s; |
| 3546 | if (s == NULL |
| 3547 | || !bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 3548 | || !bfd_set_section_alignment (abfd, s, ptralign)) |
| 3549 | return FALSE; |
| 3550 | } |
| 3551 | } |
| 3552 | |
| 3553 | return TRUE; |
| 3554 | } |
| 3555 | |
| 3556 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 3557 | static void |
| 3558 | nds32_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 3559 | struct elf_link_hash_entry *dir, |
| 3560 | struct elf_link_hash_entry *ind) |
| 3561 | { |
| 3562 | struct elf_nds32_link_hash_entry *edir, *eind; |
| 3563 | |
| 3564 | edir = (struct elf_nds32_link_hash_entry *) dir; |
| 3565 | eind = (struct elf_nds32_link_hash_entry *) ind; |
| 3566 | |
| 3567 | if (eind->dyn_relocs != NULL) |
| 3568 | { |
| 3569 | if (edir->dyn_relocs != NULL) |
| 3570 | { |
| 3571 | struct elf_nds32_dyn_relocs **pp; |
| 3572 | struct elf_nds32_dyn_relocs *p; |
| 3573 | |
| 3574 | if (ind->root.type == bfd_link_hash_indirect) |
| 3575 | abort (); |
| 3576 | |
| 3577 | /* Add reloc counts against the weak sym to the strong sym |
| 3578 | list. Merge any entries against the same section. */ |
| 3579 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) |
| 3580 | { |
| 3581 | struct elf_nds32_dyn_relocs *q; |
| 3582 | |
| 3583 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 3584 | if (q->sec == p->sec) |
| 3585 | { |
| 3586 | q->pc_count += p->pc_count; |
| 3587 | q->count += p->count; |
| 3588 | *pp = p->next; |
| 3589 | break; |
| 3590 | } |
| 3591 | if (q == NULL) |
| 3592 | pp = &p->next; |
| 3593 | } |
| 3594 | *pp = edir->dyn_relocs; |
| 3595 | } |
| 3596 | |
| 3597 | edir->dyn_relocs = eind->dyn_relocs; |
| 3598 | eind->dyn_relocs = NULL; |
| 3599 | } |
| 3600 | |
| 3601 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 3602 | } |
| 3603 | \f |
| 3604 | |
| 3605 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 3606 | regular object. The current definition is in some section of the |
| 3607 | dynamic object, but we're not including those sections. We have to |
| 3608 | change the definition to something the rest of the link can |
| 3609 | understand. */ |
| 3610 | |
| 3611 | static bfd_boolean |
| 3612 | nds32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 3613 | struct elf_link_hash_entry *h) |
| 3614 | { |
| 3615 | struct elf_nds32_link_hash_table *htab; |
| 3616 | struct elf_nds32_link_hash_entry *eh; |
| 3617 | struct elf_nds32_dyn_relocs *p; |
| 3618 | bfd *dynobj; |
| 3619 | asection *s; |
| 3620 | unsigned int power_of_two; |
| 3621 | |
| 3622 | dynobj = elf_hash_table (info)->dynobj; |
| 3623 | |
| 3624 | /* Make sure we know what is going on here. */ |
| 3625 | BFD_ASSERT (dynobj != NULL |
| 3626 | && (h->needs_plt |
| 3627 | || h->u.weakdef != NULL |
| 3628 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); |
| 3629 | |
| 3630 | |
| 3631 | /* If this is a function, put it in the procedure linkage table. We |
| 3632 | will fill in the contents of the procedure linkage table later, |
| 3633 | when we know the address of the .got section. */ |
| 3634 | if (h->type == STT_FUNC || h->needs_plt) |
| 3635 | { |
| 3636 | if (!bfd_link_pic (info) |
| 3637 | && !h->def_dynamic |
| 3638 | && !h->ref_dynamic |
| 3639 | && h->root.type != bfd_link_hash_undefweak |
| 3640 | && h->root.type != bfd_link_hash_undefined) |
| 3641 | { |
| 3642 | /* This case can occur if we saw a PLT reloc in an input |
| 3643 | file, but the symbol was never referred to by a dynamic |
| 3644 | object. In such a case, we don't actually need to build |
| 3645 | a procedure linkage table, and we can just do a PCREL |
| 3646 | reloc instead. */ |
| 3647 | h->plt.offset = (bfd_vma) - 1; |
| 3648 | h->needs_plt = 0; |
| 3649 | } |
| 3650 | |
| 3651 | return TRUE; |
| 3652 | } |
| 3653 | else |
| 3654 | h->plt.offset = (bfd_vma) - 1; |
| 3655 | |
| 3656 | /* If this is a weak symbol, and there is a real definition, the |
| 3657 | processor independent code will have arranged for us to see the |
| 3658 | real definition first, and we can just use the same value. */ |
| 3659 | if (h->u.weakdef != NULL) |
| 3660 | { |
| 3661 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 3662 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 3663 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 3664 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 3665 | return TRUE; |
| 3666 | } |
| 3667 | |
| 3668 | /* This is a reference to a symbol defined by a dynamic object which |
| 3669 | is not a function. */ |
| 3670 | |
| 3671 | /* If we are creating a shared library, we must presume that the |
| 3672 | only references to the symbol are via the global offset table. |
| 3673 | For such cases we need not do anything here; the relocations will |
| 3674 | be handled correctly by relocate_section. */ |
| 3675 | if (bfd_link_pic (info)) |
| 3676 | return TRUE; |
| 3677 | |
| 3678 | /* If there are no references to this symbol that do not use the |
| 3679 | GOT, we don't need to generate a copy reloc. */ |
| 3680 | if (!h->non_got_ref) |
| 3681 | return TRUE; |
| 3682 | |
| 3683 | /* If -z nocopyreloc was given, we won't generate them either. */ |
| 3684 | if (info->nocopyreloc) |
| 3685 | { |
| 3686 | h->non_got_ref = 0; |
| 3687 | return TRUE; |
| 3688 | } |
| 3689 | |
| 3690 | eh = (struct elf_nds32_link_hash_entry *) h; |
| 3691 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 3692 | { |
| 3693 | s = p->sec->output_section; |
| 3694 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) |
| 3695 | break; |
| 3696 | } |
| 3697 | |
| 3698 | /* If we didn't find any dynamic relocs in sections which needs the |
| 3699 | copy reloc, then we'll be keeping the dynamic relocs and avoiding |
| 3700 | the copy reloc. */ |
| 3701 | if (p == NULL) |
| 3702 | { |
| 3703 | h->non_got_ref = 0; |
| 3704 | return TRUE; |
| 3705 | } |
| 3706 | |
| 3707 | /* We must allocate the symbol in our .dynbss section, which will |
| 3708 | become part of the .bss section of the executable. There will be |
| 3709 | an entry for this symbol in the .dynsym section. The dynamic |
| 3710 | object will contain position independent code, so all references |
| 3711 | from the dynamic object to this symbol will go through the global |
| 3712 | offset table. The dynamic linker will use the .dynsym entry to |
| 3713 | determine the address it must put in the global offset table, so |
| 3714 | both the dynamic object and the regular object will refer to the |
| 3715 | same memory location for the variable. */ |
| 3716 | |
| 3717 | htab = nds32_elf_hash_table (info); |
| 3718 | s = htab->sdynbss; |
| 3719 | BFD_ASSERT (s != NULL); |
| 3720 | |
| 3721 | /* We must generate a R_NDS32_COPY reloc to tell the dynamic linker |
| 3722 | to copy the initial value out of the dynamic object and into the |
| 3723 | runtime process image. We need to remember the offset into the |
| 3724 | .rela.bss section we are going to use. */ |
| 3725 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 3726 | { |
| 3727 | asection *srel; |
| 3728 | |
| 3729 | srel = htab->srelbss; |
| 3730 | BFD_ASSERT (srel != NULL); |
| 3731 | srel->size += sizeof (Elf32_External_Rela); |
| 3732 | h->needs_copy = 1; |
| 3733 | } |
| 3734 | |
| 3735 | /* We need to figure out the alignment required for this symbol. I |
| 3736 | have no idea how ELF linkers handle this. */ |
| 3737 | power_of_two = bfd_log2 (h->size); |
| 3738 | if (power_of_two > 3) |
| 3739 | power_of_two = 3; |
| 3740 | |
| 3741 | /* Apply the required alignment. */ |
| 3742 | s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two)); |
| 3743 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 3744 | { |
| 3745 | if (!bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 3746 | return FALSE; |
| 3747 | } |
| 3748 | |
| 3749 | /* Define the symbol as being at this point in the section. */ |
| 3750 | h->root.u.def.section = s; |
| 3751 | h->root.u.def.value = s->size; |
| 3752 | |
| 3753 | /* Increment the section size to make room for the symbol. */ |
| 3754 | s->size += h->size; |
| 3755 | |
| 3756 | return TRUE; |
| 3757 | } |
| 3758 | |
| 3759 | /* Allocate space in .plt, .got and associated reloc sections for |
| 3760 | dynamic relocs. */ |
| 3761 | |
| 3762 | static bfd_boolean |
| 3763 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 3764 | { |
| 3765 | struct bfd_link_info *info; |
| 3766 | struct elf_nds32_link_hash_table *htab; |
| 3767 | struct elf_nds32_link_hash_entry *eh; |
| 3768 | struct elf_nds32_dyn_relocs *p; |
| 3769 | |
| 3770 | if (h->root.type == bfd_link_hash_indirect) |
| 3771 | return TRUE; |
| 3772 | |
| 3773 | if (h->root.type == bfd_link_hash_warning) |
| 3774 | /* When warning symbols are created, they **replace** the "real" |
| 3775 | entry in the hash table, thus we never get to see the real |
| 3776 | symbol in a hash traversal. So look at it now. */ |
| 3777 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3778 | |
| 3779 | info = (struct bfd_link_info *) inf; |
| 3780 | htab = nds32_elf_hash_table (info); |
| 3781 | |
| 3782 | eh = (struct elf_nds32_link_hash_entry *) h; |
| 3783 | |
| 3784 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) |
| 3785 | { |
| 3786 | /* Make sure this symbol is output as a dynamic symbol. |
| 3787 | Undefined weak syms won't yet be marked as dynamic. */ |
| 3788 | if (h->dynindx == -1 && !h->forced_local) |
| 3789 | { |
| 3790 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
| 3791 | return FALSE; |
| 3792 | } |
| 3793 | |
| 3794 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
| 3795 | { |
| 3796 | asection *s = htab->splt; |
| 3797 | |
| 3798 | /* If this is the first .plt entry, make room for the special |
| 3799 | first entry. */ |
| 3800 | if (s->size == 0) |
| 3801 | s->size += PLT_ENTRY_SIZE; |
| 3802 | |
| 3803 | h->plt.offset = s->size; |
| 3804 | |
| 3805 | /* If this symbol is not defined in a regular file, and we are |
| 3806 | not generating a shared library, then set the symbol to this |
| 3807 | location in the .plt. This is required to make function |
| 3808 | pointers compare as equal between the normal executable and |
| 3809 | the shared library. */ |
| 3810 | if (!bfd_link_pic (info) && !h->def_regular) |
| 3811 | { |
| 3812 | h->root.u.def.section = s; |
| 3813 | h->root.u.def.value = h->plt.offset; |
| 3814 | } |
| 3815 | |
| 3816 | /* Make room for this entry. */ |
| 3817 | s->size += PLT_ENTRY_SIZE; |
| 3818 | |
| 3819 | /* We also need to make an entry in the .got.plt section, which |
| 3820 | will be placed in the .got section by the linker script. */ |
| 3821 | htab->sgotplt->size += 4; |
| 3822 | |
| 3823 | /* We also need to make an entry in the .rel.plt section. */ |
| 3824 | htab->srelplt->size += sizeof (Elf32_External_Rela); |
| 3825 | } |
| 3826 | else |
| 3827 | { |
| 3828 | h->plt.offset = (bfd_vma) - 1; |
| 3829 | h->needs_plt = 0; |
| 3830 | } |
| 3831 | } |
| 3832 | else |
| 3833 | { |
| 3834 | h->plt.offset = (bfd_vma) - 1; |
| 3835 | h->needs_plt = 0; |
| 3836 | } |
| 3837 | |
| 3838 | if (h->got.refcount > 0) |
| 3839 | { |
| 3840 | asection *s; |
| 3841 | bfd_boolean dyn; |
| 3842 | int tls_type = elf32_nds32_hash_entry (h)->tls_type; |
| 3843 | |
| 3844 | /* Make sure this symbol is output as a dynamic symbol. |
| 3845 | Undefined weak syms won't yet be marked as dynamic. */ |
| 3846 | if (h->dynindx == -1 && !h->forced_local) |
| 3847 | { |
| 3848 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
| 3849 | return FALSE; |
| 3850 | } |
| 3851 | |
| 3852 | s = htab->sgot; |
| 3853 | h->got.offset = s->size; |
| 3854 | |
| 3855 | if (tls_type == GOT_UNKNOWN) |
| 3856 | abort (); |
| 3857 | else if (tls_type == GOT_NORMAL |
| 3858 | || tls_type == GOT_TLS_IE) |
| 3859 | /* Need a GOT slot. */ |
| 3860 | s->size += 4; |
| 3861 | |
| 3862 | dyn = htab->root.dynamic_sections_created; |
| 3863 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) |
| 3864 | htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 3865 | } |
| 3866 | else |
| 3867 | h->got.offset = (bfd_vma) - 1; |
| 3868 | |
| 3869 | if (eh->dyn_relocs == NULL) |
| 3870 | return TRUE; |
| 3871 | |
| 3872 | /* In the shared -Bsymbolic case, discard space allocated for |
| 3873 | dynamic pc-relative relocs against symbols which turn out to be |
| 3874 | defined in regular objects. For the normal shared case, discard |
| 3875 | space for pc-relative relocs that have become local due to symbol |
| 3876 | visibility changes. */ |
| 3877 | |
| 3878 | if (bfd_link_pic (info)) |
| 3879 | { |
| 3880 | if (h->def_regular && (h->forced_local || info->symbolic)) |
| 3881 | { |
| 3882 | struct elf_nds32_dyn_relocs **pp; |
| 3883 | |
| 3884 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) |
| 3885 | { |
| 3886 | p->count -= p->pc_count; |
| 3887 | p->pc_count = 0; |
| 3888 | if (p->count == 0) |
| 3889 | *pp = p->next; |
| 3890 | else |
| 3891 | pp = &p->next; |
| 3892 | } |
| 3893 | } |
| 3894 | } |
| 3895 | else |
| 3896 | { |
| 3897 | /* For the non-shared case, discard space for relocs against |
| 3898 | symbols which turn out to need copy relocs or are not dynamic. */ |
| 3899 | |
| 3900 | if (!h->non_got_ref |
| 3901 | && ((h->def_dynamic |
| 3902 | && !h->def_regular) |
| 3903 | || (htab->root.dynamic_sections_created |
| 3904 | && (h->root.type == bfd_link_hash_undefweak |
| 3905 | || h->root.type == bfd_link_hash_undefined)))) |
| 3906 | { |
| 3907 | /* Make sure this symbol is output as a dynamic symbol. |
| 3908 | Undefined weak syms won't yet be marked as dynamic. */ |
| 3909 | if (h->dynindx == -1 && !h->forced_local) |
| 3910 | { |
| 3911 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
| 3912 | return FALSE; |
| 3913 | } |
| 3914 | |
| 3915 | /* If that succeeded, we know we'll be keeping all the |
| 3916 | relocs. */ |
| 3917 | if (h->dynindx != -1) |
| 3918 | goto keep; |
| 3919 | } |
| 3920 | |
| 3921 | eh->dyn_relocs = NULL; |
| 3922 | |
| 3923 | keep:; |
| 3924 | } |
| 3925 | |
| 3926 | /* Finally, allocate space. */ |
| 3927 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 3928 | { |
| 3929 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 3930 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 3931 | } |
| 3932 | |
| 3933 | return TRUE; |
| 3934 | } |
| 3935 | |
| 3936 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 3937 | |
| 3938 | static bfd_boolean |
| 3939 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 3940 | { |
| 3941 | struct elf_nds32_link_hash_entry *eh; |
| 3942 | struct elf_nds32_dyn_relocs *p; |
| 3943 | |
| 3944 | if (h->root.type == bfd_link_hash_warning) |
| 3945 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3946 | |
| 3947 | eh = (struct elf_nds32_link_hash_entry *) h; |
| 3948 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 3949 | { |
| 3950 | asection *s = p->sec->output_section; |
| 3951 | |
| 3952 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 3953 | { |
| 3954 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 3955 | |
| 3956 | info->flags |= DF_TEXTREL; |
| 3957 | |
| 3958 | /* Not an error, just cut short the traversal. */ |
| 3959 | return FALSE; |
| 3960 | } |
| 3961 | } |
| 3962 | return TRUE; |
| 3963 | } |
| 3964 | |
| 3965 | /* Set the sizes of the dynamic sections. */ |
| 3966 | |
| 3967 | static bfd_boolean |
| 3968 | nds32_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 3969 | struct bfd_link_info *info) |
| 3970 | { |
| 3971 | struct elf_nds32_link_hash_table *htab; |
| 3972 | bfd *dynobj; |
| 3973 | asection *s; |
| 3974 | bfd_boolean relocs; |
| 3975 | bfd *ibfd; |
| 3976 | |
| 3977 | htab = nds32_elf_hash_table (info); |
| 3978 | dynobj = htab->root.dynobj; |
| 3979 | BFD_ASSERT (dynobj != NULL); |
| 3980 | |
| 3981 | if (htab->root.dynamic_sections_created) |
| 3982 | { |
| 3983 | /* Set the contents of the .interp section to the interpreter. */ |
| 3984 | if (!bfd_link_pic (info) && !info->nointerp) |
| 3985 | { |
| 3986 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 3987 | BFD_ASSERT (s != NULL); |
| 3988 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 3989 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 3990 | } |
| 3991 | } |
| 3992 | |
| 3993 | /* Set up .got offsets for local syms, and space for local dynamic |
| 3994 | relocs. */ |
| 3995 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 3996 | { |
| 3997 | bfd_signed_vma *local_got; |
| 3998 | bfd_signed_vma *end_local_got; |
| 3999 | bfd_size_type locsymcount; |
| 4000 | Elf_Internal_Shdr *symtab_hdr; |
| 4001 | asection *srel; |
| 4002 | |
| 4003 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 4004 | continue; |
| 4005 | |
| 4006 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 4007 | { |
| 4008 | struct elf_nds32_dyn_relocs *p; |
| 4009 | |
| 4010 | for (p = ((struct elf_nds32_dyn_relocs *) |
| 4011 | elf_section_data (s)->local_dynrel); |
| 4012 | p != NULL; p = p->next) |
| 4013 | { |
| 4014 | if (!bfd_is_abs_section (p->sec) |
| 4015 | && bfd_is_abs_section (p->sec->output_section)) |
| 4016 | { |
| 4017 | /* Input section has been discarded, either because |
| 4018 | it is a copy of a linkonce section or due to |
| 4019 | linker script /DISCARD/, so we'll be discarding |
| 4020 | the relocs too. */ |
| 4021 | } |
| 4022 | else if (p->count != 0) |
| 4023 | { |
| 4024 | srel = elf_section_data (p->sec)->sreloc; |
| 4025 | srel->size += p->count * sizeof (Elf32_External_Rela); |
| 4026 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 4027 | info->flags |= DF_TEXTREL; |
| 4028 | } |
| 4029 | } |
| 4030 | } |
| 4031 | |
| 4032 | local_got = elf_local_got_refcounts (ibfd); |
| 4033 | if (!local_got) |
| 4034 | continue; |
| 4035 | |
| 4036 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 4037 | locsymcount = symtab_hdr->sh_info; |
| 4038 | end_local_got = local_got + locsymcount; |
| 4039 | s = htab->sgot; |
| 4040 | srel = htab->srelgot; |
| 4041 | for (; local_got < end_local_got; ++local_got) |
| 4042 | { |
| 4043 | if (*local_got > 0) |
| 4044 | { |
| 4045 | *local_got = s->size; |
| 4046 | s->size += 4; |
| 4047 | if (bfd_link_pic (info)) |
| 4048 | srel->size += sizeof (Elf32_External_Rela); |
| 4049 | } |
| 4050 | else |
| 4051 | *local_got = (bfd_vma) - 1; |
| 4052 | } |
| 4053 | } |
| 4054 | |
| 4055 | /* Allocate global sym .plt and .got entries, and space for global |
| 4056 | sym dynamic relocs. */ |
| 4057 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, (void *) info); |
| 4058 | |
| 4059 | /* We now have determined the sizes of the various dynamic sections. |
| 4060 | Allocate memory for them. */ |
| 4061 | relocs = FALSE; |
| 4062 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 4063 | { |
| 4064 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 4065 | continue; |
| 4066 | |
| 4067 | if (s == htab->splt) |
| 4068 | { |
| 4069 | /* Strip this section if we don't need it; see the |
| 4070 | comment below. */ |
| 4071 | } |
| 4072 | else if (s == htab->sgot) |
| 4073 | { |
| 4074 | got_size += s->size; |
| 4075 | } |
| 4076 | else if (s == htab->sgotplt) |
| 4077 | { |
| 4078 | got_size += s->size; |
| 4079 | } |
| 4080 | else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) |
| 4081 | { |
| 4082 | if (s->size != 0 && s != htab->srelplt) |
| 4083 | relocs = TRUE; |
| 4084 | |
| 4085 | /* We use the reloc_count field as a counter if we need |
| 4086 | to copy relocs into the output file. */ |
| 4087 | s->reloc_count = 0; |
| 4088 | } |
| 4089 | else |
| 4090 | { |
| 4091 | /* It's not one of our sections, so don't allocate space. */ |
| 4092 | continue; |
| 4093 | } |
| 4094 | |
| 4095 | if (s->size == 0) |
| 4096 | { |
| 4097 | /* If we don't need this section, strip it from the |
| 4098 | output file. This is mostly to handle .rela.bss and |
| 4099 | .rela.plt. We must create both sections in |
| 4100 | create_dynamic_sections, because they must be created |
| 4101 | before the linker maps input sections to output |
| 4102 | sections. The linker does that before |
| 4103 | adjust_dynamic_symbol is called, and it is that |
| 4104 | function which decides whether anything needs to go |
| 4105 | into these sections. */ |
| 4106 | s->flags |= SEC_EXCLUDE; |
| 4107 | continue; |
| 4108 | } |
| 4109 | |
| 4110 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 4111 | here in case unused entries are not reclaimed before the |
| 4112 | section's contents are written out. This should not happen, |
| 4113 | but this way if it does, we get a R_NDS32_NONE reloc instead |
| 4114 | of garbage. */ |
| 4115 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
| 4116 | if (s->contents == NULL) |
| 4117 | return FALSE; |
| 4118 | } |
| 4119 | |
| 4120 | |
| 4121 | if (htab->root.dynamic_sections_created) |
| 4122 | { |
| 4123 | /* Add some entries to the .dynamic section. We fill in the |
| 4124 | values later, in nds32_elf_finish_dynamic_sections, but we |
| 4125 | must add the entries now so that we get the correct size for |
| 4126 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 4127 | dynamic linker and used by the debugger. */ |
| 4128 | #define add_dynamic_entry(TAG, VAL) \ |
| 4129 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 4130 | |
| 4131 | if (!bfd_link_pic (info)) |
| 4132 | { |
| 4133 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 4134 | return FALSE; |
| 4135 | } |
| 4136 | |
| 4137 | if (htab->splt->size != 0) |
| 4138 | { |
| 4139 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 4140 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 4141 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 4142 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 4143 | return FALSE; |
| 4144 | } |
| 4145 | |
| 4146 | if (relocs) |
| 4147 | { |
| 4148 | if (!add_dynamic_entry (DT_RELA, 0) |
| 4149 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 4150 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) |
| 4151 | return FALSE; |
| 4152 | |
| 4153 | /* If any dynamic relocs apply to a read-only section, |
| 4154 | then we need a DT_TEXTREL entry. */ |
| 4155 | if ((info->flags & DF_TEXTREL) == 0) |
| 4156 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, |
| 4157 | (void *) info); |
| 4158 | |
| 4159 | if ((info->flags & DF_TEXTREL) != 0) |
| 4160 | { |
| 4161 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 4162 | return FALSE; |
| 4163 | } |
| 4164 | } |
| 4165 | } |
| 4166 | #undef add_dynamic_entry |
| 4167 | |
| 4168 | return TRUE; |
| 4169 | } |
| 4170 | |
| 4171 | static bfd_reloc_status_type |
| 4172 | nds32_relocate_contents (reloc_howto_type *howto, bfd *input_bfd, |
| 4173 | bfd_vma relocation, bfd_byte *location) |
| 4174 | { |
| 4175 | int size; |
| 4176 | bfd_vma x = 0; |
| 4177 | bfd_reloc_status_type flag; |
| 4178 | unsigned int rightshift = howto->rightshift; |
| 4179 | unsigned int bitpos = howto->bitpos; |
| 4180 | |
| 4181 | /* If the size is negative, negate RELOCATION. This isn't very |
| 4182 | general. */ |
| 4183 | if (howto->size < 0) |
| 4184 | relocation = -relocation; |
| 4185 | |
| 4186 | /* Get the value we are going to relocate. */ |
| 4187 | size = bfd_get_reloc_size (howto); |
| 4188 | switch (size) |
| 4189 | { |
| 4190 | default: |
| 4191 | abort (); |
| 4192 | break; |
| 4193 | case 0: |
| 4194 | return bfd_reloc_ok; |
| 4195 | case 2: |
| 4196 | x = bfd_getb16 (location); |
| 4197 | break; |
| 4198 | case 4: |
| 4199 | x = bfd_getb32 (location); |
| 4200 | break; |
| 4201 | } |
| 4202 | |
| 4203 | /* Check for overflow. FIXME: We may drop bits during the addition |
| 4204 | which we don't check for. We must either check at every single |
| 4205 | operation, which would be tedious, or we must do the computations |
| 4206 | in a type larger than bfd_vma, which would be inefficient. */ |
| 4207 | flag = bfd_reloc_ok; |
| 4208 | if (howto->complain_on_overflow != complain_overflow_dont) |
| 4209 | { |
| 4210 | bfd_vma addrmask, fieldmask, signmask, ss; |
| 4211 | bfd_vma a, b, sum; |
| 4212 | |
| 4213 | /* Get the values to be added together. For signed and unsigned |
| 4214 | relocations, we assume that all values should be truncated to |
| 4215 | the size of an address. For bitfields, all the bits matter. |
| 4216 | See also bfd_check_overflow. */ |
| 4217 | fieldmask = N_ONES (howto->bitsize); |
| 4218 | signmask = ~fieldmask; |
| 4219 | addrmask = N_ONES (bfd_arch_bits_per_address (input_bfd)) | fieldmask; |
| 4220 | a = (relocation & addrmask) >> rightshift; |
| 4221 | b = (x & howto->src_mask & addrmask) >> bitpos; |
| 4222 | |
| 4223 | switch (howto->complain_on_overflow) |
| 4224 | { |
| 4225 | case complain_overflow_signed: |
| 4226 | /* If any sign bits are set, all sign bits must be set. |
| 4227 | That is, A must be a valid negative address after |
| 4228 | shifting. */ |
| 4229 | signmask = ~(fieldmask >> 1); |
| 4230 | /* Fall through. */ |
| 4231 | |
| 4232 | case complain_overflow_bitfield: |
| 4233 | /* Much like the signed check, but for a field one bit |
| 4234 | wider. We allow a bitfield to represent numbers in the |
| 4235 | range -2**n to 2**n-1, where n is the number of bits in the |
| 4236 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc |
| 4237 | can't overflow, which is exactly what we want. */ |
| 4238 | ss = a & signmask; |
| 4239 | if (ss != 0 && ss != ((addrmask >> rightshift) & signmask)) |
| 4240 | flag = bfd_reloc_overflow; |
| 4241 | |
| 4242 | /* We only need this next bit of code if the sign bit of B |
| 4243 | is below the sign bit of A. This would only happen if |
| 4244 | SRC_MASK had fewer bits than BITSIZE. Note that if |
| 4245 | SRC_MASK has more bits than BITSIZE, we can get into |
| 4246 | trouble; we would need to verify that B is in range, as |
| 4247 | we do for A above. */ |
| 4248 | ss = ((~howto->src_mask) >> 1) & howto->src_mask; |
| 4249 | ss >>= bitpos; |
| 4250 | |
| 4251 | /* Set all the bits above the sign bit. */ |
| 4252 | b = (b ^ ss) - ss; |
| 4253 | |
| 4254 | /* Now we can do the addition. */ |
| 4255 | sum = a + b; |
| 4256 | |
| 4257 | /* See if the result has the correct sign. Bits above the |
| 4258 | sign bit are junk now; ignore them. If the sum is |
| 4259 | positive, make sure we did not have all negative inputs; |
| 4260 | if the sum is negative, make sure we did not have all |
| 4261 | positive inputs. The test below looks only at the sign |
| 4262 | bits, and it really just |
| 4263 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) |
| 4264 | |
| 4265 | We mask with addrmask here to explicitly allow an address |
| 4266 | wrap-around. The Linux kernel relies on it, and it is |
| 4267 | the only way to write assembler code which can run when |
| 4268 | loaded at a location 0x80000000 away from the location at |
| 4269 | which it is linked. */ |
| 4270 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) |
| 4271 | flag = bfd_reloc_overflow; |
| 4272 | |
| 4273 | break; |
| 4274 | |
| 4275 | case complain_overflow_unsigned: |
| 4276 | /* Checking for an unsigned overflow is relatively easy: |
| 4277 | trim the addresses and add, and trim the result as well. |
| 4278 | Overflow is normally indicated when the result does not |
| 4279 | fit in the field. However, we also need to consider the |
| 4280 | case when, e.g., fieldmask is 0x7fffffff or smaller, an |
| 4281 | input is 0x80000000, and bfd_vma is only 32 bits; then we |
| 4282 | will get sum == 0, but there is an overflow, since the |
| 4283 | inputs did not fit in the field. Instead of doing a |
| 4284 | separate test, we can check for this by or-ing in the |
| 4285 | operands when testing for the sum overflowing its final |
| 4286 | field. */ |
| 4287 | sum = (a + b) & addrmask; |
| 4288 | if ((a | b | sum) & signmask) |
| 4289 | flag = bfd_reloc_overflow; |
| 4290 | break; |
| 4291 | |
| 4292 | default: |
| 4293 | abort (); |
| 4294 | } |
| 4295 | } |
| 4296 | |
| 4297 | /* Put RELOCATION in the right bits. */ |
| 4298 | relocation >>= (bfd_vma) rightshift; |
| 4299 | relocation <<= (bfd_vma) bitpos; |
| 4300 | |
| 4301 | /* Add RELOCATION to the right bits of X. */ |
| 4302 | /* FIXME : 090616 |
| 4303 | Because the relaxation may generate duplicate relocation at one address, |
| 4304 | an addition to immediate in the instruction may cause the relocation added |
| 4305 | several times. |
| 4306 | This bug should be fixed in assembler, but a check is also needed here. */ |
| 4307 | if (howto->partial_inplace) |
| 4308 | x = ((x & ~howto->dst_mask) |
| 4309 | | (((x & howto->src_mask) + relocation) & howto->dst_mask)); |
| 4310 | else |
| 4311 | x = ((x & ~howto->dst_mask) | ((relocation) & howto->dst_mask)); |
| 4312 | |
| 4313 | |
| 4314 | /* Put the relocated value back in the object file. */ |
| 4315 | switch (size) |
| 4316 | { |
| 4317 | default: |
| 4318 | case 0: |
| 4319 | case 1: |
| 4320 | case 8: |
| 4321 | abort (); |
| 4322 | break; |
| 4323 | case 2: |
| 4324 | bfd_putb16 (x, location); |
| 4325 | break; |
| 4326 | case 4: |
| 4327 | bfd_putb32 (x, location); |
| 4328 | break; |
| 4329 | } |
| 4330 | |
| 4331 | return flag; |
| 4332 | } |
| 4333 | |
| 4334 | static bfd_reloc_status_type |
| 4335 | nds32_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, |
| 4336 | asection *input_section, bfd_byte *contents, |
| 4337 | bfd_vma address, bfd_vma value, bfd_vma addend) |
| 4338 | { |
| 4339 | bfd_vma relocation; |
| 4340 | |
| 4341 | /* Sanity check the address. */ |
| 4342 | if (address > bfd_get_section_limit (input_bfd, input_section)) |
| 4343 | return bfd_reloc_outofrange; |
| 4344 | |
| 4345 | /* This function assumes that we are dealing with a basic relocation |
| 4346 | against a symbol. We want to compute the value of the symbol to |
| 4347 | relocate to. This is just VALUE, the value of the symbol, plus |
| 4348 | ADDEND, any addend associated with the reloc. */ |
| 4349 | relocation = value + addend; |
| 4350 | |
| 4351 | /* If the relocation is PC relative, we want to set RELOCATION to |
| 4352 | the distance between the symbol (currently in RELOCATION) and the |
| 4353 | location we are relocating. Some targets (e.g., i386-aout) |
| 4354 | arrange for the contents of the section to be the negative of the |
| 4355 | offset of the location within the section; for such targets |
| 4356 | pcrel_offset is FALSE. Other targets (e.g., m88kbcs or ELF) |
| 4357 | simply leave the contents of the section as zero; for such |
| 4358 | targets pcrel_offset is TRUE. If pcrel_offset is FALSE we do not |
| 4359 | need to subtract out the offset of the location within the |
| 4360 | section (which is just ADDRESS). */ |
| 4361 | if (howto->pc_relative) |
| 4362 | { |
| 4363 | relocation -= (input_section->output_section->vma |
| 4364 | + input_section->output_offset); |
| 4365 | if (howto->pcrel_offset) |
| 4366 | relocation -= address; |
| 4367 | } |
| 4368 | |
| 4369 | return nds32_relocate_contents (howto, input_bfd, relocation, |
| 4370 | contents + address); |
| 4371 | } |
| 4372 | |
| 4373 | static bfd_boolean |
| 4374 | nds32_elf_output_symbol_hook (struct bfd_link_info *info, |
| 4375 | const char *name, |
| 4376 | Elf_Internal_Sym *elfsym ATTRIBUTE_UNUSED, |
| 4377 | asection *input_sec, |
| 4378 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED) |
| 4379 | { |
| 4380 | const char *source; |
| 4381 | FILE *sym_ld_script = NULL; |
| 4382 | struct elf_nds32_link_hash_table *table; |
| 4383 | |
| 4384 | table = nds32_elf_hash_table (info); |
| 4385 | sym_ld_script = table->sym_ld_script; |
| 4386 | if (!sym_ld_script) |
| 4387 | return TRUE; |
| 4388 | |
| 4389 | if (!h || !name || *name == '\0') |
| 4390 | return TRUE; |
| 4391 | |
| 4392 | if (input_sec->flags & SEC_EXCLUDE) |
| 4393 | return TRUE; |
| 4394 | |
| 4395 | if (!check_start_export_sym) |
| 4396 | { |
| 4397 | fprintf (sym_ld_script, "SECTIONS\n{\n"); |
| 4398 | check_start_export_sym = 1; |
| 4399 | } |
| 4400 | |
| 4401 | if (h->root.type == bfd_link_hash_defined |
| 4402 | || h->root.type == bfd_link_hash_defweak) |
| 4403 | { |
| 4404 | if (!h->root.u.def.section->output_section) |
| 4405 | return TRUE; |
| 4406 | |
| 4407 | if (bfd_is_const_section (input_sec)) |
| 4408 | source = input_sec->name; |
| 4409 | else |
| 4410 | source = input_sec->owner->filename; |
| 4411 | |
| 4412 | fprintf (sym_ld_script, "\t%s = 0x%08lx;\t /* %s */\n", |
| 4413 | h->root.root.string, |
| 4414 | (long) (h->root.u.def.value |
| 4415 | + h->root.u.def.section->output_section->vma |
| 4416 | + h->root.u.def.section->output_offset), source); |
| 4417 | } |
| 4418 | |
| 4419 | return TRUE; |
| 4420 | } |
| 4421 | |
| 4422 | /* Relocate an NDS32/D ELF section. |
| 4423 | There is some attempt to make this function usable for many architectures, |
| 4424 | both for RELA and REL type relocs, if only to serve as a learning tool. |
| 4425 | |
| 4426 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 4427 | to handle the relocations for a section. |
| 4428 | |
| 4429 | The relocs are always passed as Rela structures; if the section |
| 4430 | actually uses Rel structures, the r_addend field will always be |
| 4431 | zero. |
| 4432 | |
| 4433 | This function is responsible for adjust the section contents as |
| 4434 | necessary, and (if using Rela relocs and generating a |
| 4435 | relocatable output file) adjusting the reloc addend as |
| 4436 | necessary. |
| 4437 | |
| 4438 | This function does not have to worry about setting the reloc |
| 4439 | address or the reloc symbol index. |
| 4440 | |
| 4441 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 4442 | |
| 4443 | LOCAL_SECTIONS is an array giving the section in the input file |
| 4444 | corresponding to the st_shndx field of each local symbol. |
| 4445 | |
| 4446 | The global hash table entry for the global symbols can be found |
| 4447 | via elf_sym_hashes (input_bfd). |
| 4448 | |
| 4449 | When generating relocatable output, this function must handle |
| 4450 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 4451 | going to be the section symbol corresponding to the output |
| 4452 | section, which means that the addend must be adjusted |
| 4453 | accordingly. */ |
| 4454 | |
| 4455 | static bfd_vma |
| 4456 | dtpoff_base (struct bfd_link_info *info) |
| 4457 | { |
| 4458 | /* If tls_sec is NULL, we should have signalled an error already. */ |
| 4459 | if (elf_hash_table (info)->tls_sec == NULL) |
| 4460 | return 0; |
| 4461 | return elf_hash_table (info)->tls_sec->vma; |
| 4462 | } |
| 4463 | |
| 4464 | static bfd_boolean |
| 4465 | nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, |
| 4466 | struct bfd_link_info * info, |
| 4467 | bfd * input_bfd, |
| 4468 | asection * input_section, |
| 4469 | bfd_byte * contents, |
| 4470 | Elf_Internal_Rela * relocs, |
| 4471 | Elf_Internal_Sym * local_syms, |
| 4472 | asection ** local_sections) |
| 4473 | { |
| 4474 | Elf_Internal_Shdr *symtab_hdr; |
| 4475 | struct elf_link_hash_entry **sym_hashes; |
| 4476 | Elf_Internal_Rela *rel, *relend; |
| 4477 | bfd_boolean ret = TRUE; /* Assume success. */ |
| 4478 | int align = 0; |
| 4479 | bfd_reloc_status_type r; |
| 4480 | const char *errmsg = NULL; |
| 4481 | bfd_vma gp; |
| 4482 | struct elf_nds32_link_hash_table *htab; |
| 4483 | bfd *dynobj; |
| 4484 | bfd_vma *local_got_offsets; |
| 4485 | asection *sgot, *splt, *sreloc; |
| 4486 | bfd_vma high_address; |
| 4487 | struct elf_nds32_link_hash_table *table; |
| 4488 | int eliminate_gc_relocs; |
| 4489 | bfd_vma fpbase_addr; |
| 4490 | |
| 4491 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 4492 | sym_hashes = elf_sym_hashes (input_bfd); |
| 4493 | htab = nds32_elf_hash_table (info); |
| 4494 | high_address = bfd_get_section_limit (input_bfd, input_section); |
| 4495 | |
| 4496 | dynobj = htab->root.dynobj; |
| 4497 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 4498 | |
| 4499 | sgot = htab->sgot; |
| 4500 | splt = htab->splt; |
| 4501 | sreloc = NULL; |
| 4502 | |
| 4503 | rel = relocs; |
| 4504 | relend = relocs + input_section->reloc_count; |
| 4505 | |
| 4506 | table = nds32_elf_hash_table (info); |
| 4507 | eliminate_gc_relocs = table->eliminate_gc_relocs; |
| 4508 | /* By this time, we can adjust the value of _SDA_BASE_. */ |
| 4509 | if ((!bfd_link_relocatable (info))) |
| 4510 | { |
| 4511 | is_SDA_BASE_set = 1; |
| 4512 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, TRUE); |
| 4513 | if (r != bfd_reloc_ok) |
| 4514 | return FALSE; |
| 4515 | } |
| 4516 | |
| 4517 | if (is_ITB_BASE_set == 0) |
| 4518 | { |
| 4519 | /* Set the _ITB_BASE_. */ |
| 4520 | if (!nds32_elf_ex9_itb_base (info)) |
| 4521 | { |
| 4522 | (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), |
| 4523 | output_bfd); |
| 4524 | bfd_set_error (bfd_error_bad_value); |
| 4525 | } |
| 4526 | } |
| 4527 | |
| 4528 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) |
| 4529 | if (!nds32_elf_ifc_reloc ()) |
| 4530 | (*_bfd_error_handler) (_("error: IFC relocation error.")); |
| 4531 | |
| 4532 | /* Relocation for .ex9.itable. */ |
| 4533 | if (table->target_optimize & NDS32_RELAX_EX9_ON |
| 4534 | || (table->ex9_import_file && table->update_ex9_table)) |
| 4535 | nds32_elf_ex9_reloc_jmp (info); |
| 4536 | |
| 4537 | /* Use gp as fp to prevent truncated fit. Because in relaxation time |
| 4538 | the fp value is set as gp, and it has be reverted for instruction |
| 4539 | setting fp. */ |
| 4540 | fpbase_addr = elf_gp (output_bfd); |
| 4541 | |
| 4542 | for (rel = relocs; rel < relend; rel++) |
| 4543 | { |
| 4544 | enum elf_nds32_reloc_type r_type; |
| 4545 | reloc_howto_type *howto = NULL; |
| 4546 | unsigned long r_symndx; |
| 4547 | struct elf_link_hash_entry *h = NULL; |
| 4548 | Elf_Internal_Sym *sym = NULL; |
| 4549 | asection *sec; |
| 4550 | bfd_vma relocation; |
| 4551 | |
| 4552 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to |
| 4553 | ensure it's zero (we use REL relocs, not RELA). Therefore this |
| 4554 | should be assigning zero to `addend', but for clarity we use |
| 4555 | `r_addend'. */ |
| 4556 | |
| 4557 | bfd_vma addend = rel->r_addend; |
| 4558 | bfd_vma offset = rel->r_offset; |
| 4559 | |
| 4560 | r_type = ELF32_R_TYPE (rel->r_info); |
| 4561 | if (r_type >= R_NDS32_max) |
| 4562 | { |
| 4563 | (*_bfd_error_handler) (_("%B: error: unknown relocation type %d."), |
| 4564 | input_bfd, r_type); |
| 4565 | bfd_set_error (bfd_error_bad_value); |
| 4566 | ret = FALSE; |
| 4567 | continue; |
| 4568 | } |
| 4569 | |
| 4570 | if (r_type == R_NDS32_GNU_VTENTRY |
| 4571 | || r_type == R_NDS32_GNU_VTINHERIT |
| 4572 | || r_type == R_NDS32_NONE |
| 4573 | || r_type == R_NDS32_RELA_GNU_VTENTRY |
| 4574 | || r_type == R_NDS32_RELA_GNU_VTINHERIT |
| 4575 | || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA) |
| 4576 | || r_type == R_NDS32_DATA |
| 4577 | || r_type == R_NDS32_TRAN |
| 4578 | || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7)) |
| 4579 | continue; |
| 4580 | |
| 4581 | /* If we enter the fp-as-gp region. Resolve the address |
| 4582 | of best fp-base. */ |
| 4583 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
| 4584 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) |
| 4585 | { |
| 4586 | int dist; |
| 4587 | |
| 4588 | /* Distance to relocation of best fp-base is encoded in R_SYM. */ |
| 4589 | dist = rel->r_addend >> 16; |
| 4590 | fpbase_addr = calculate_memory_address (input_bfd, rel + dist, |
| 4591 | local_syms, symtab_hdr); |
| 4592 | } |
| 4593 | else if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_END |
| 4594 | && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) |
| 4595 | { |
| 4596 | fpbase_addr = elf_gp (output_bfd); |
| 4597 | } |
| 4598 | |
| 4599 | if (((r_type >= R_NDS32_DWARF2_OP1_RELA |
| 4600 | && r_type <= R_NDS32_DWARF2_LEB_RELA) |
| 4601 | || r_type >= R_NDS32_RELAX_ENTRY) && !bfd_link_relocatable (info)) |
| 4602 | continue; |
| 4603 | |
| 4604 | howto = bfd_elf32_bfd_reloc_type_table_lookup (r_type); |
| 4605 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 4606 | |
| 4607 | /* This is a final link. */ |
| 4608 | sym = NULL; |
| 4609 | sec = NULL; |
| 4610 | h = NULL; |
| 4611 | |
| 4612 | if (r_symndx < symtab_hdr->sh_info) |
| 4613 | { |
| 4614 | /* Local symbol. */ |
| 4615 | sym = local_syms + r_symndx; |
| 4616 | sec = local_sections[r_symndx]; |
| 4617 | |
| 4618 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 4619 | addend = rel->r_addend; |
| 4620 | } |
| 4621 | else |
| 4622 | { |
| 4623 | /* External symbol. */ |
| 4624 | bfd_boolean warned, ignored, unresolved_reloc; |
| 4625 | int symndx = r_symndx - symtab_hdr->sh_info; |
| 4626 | |
| 4627 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 4628 | r_symndx, symtab_hdr, sym_hashes, h, sec, |
| 4629 | relocation, unresolved_reloc, warned, |
| 4630 | ignored); |
| 4631 | |
| 4632 | /* la $fp, _FP_BASE_ is per-function (region). |
| 4633 | Handle it specially. */ |
| 4634 | switch ((int) r_type) |
| 4635 | { |
| 4636 | case R_NDS32_SDA19S0_RELA: |
| 4637 | case R_NDS32_SDA15S0_RELA: |
| 4638 | case R_NDS32_20_RELA: |
| 4639 | if (strcmp (elf_sym_hashes (input_bfd)[symndx]->root.root.string, |
| 4640 | FP_BASE_NAME) == 0) |
| 4641 | { |
| 4642 | relocation = fpbase_addr; |
| 4643 | break; |
| 4644 | } |
| 4645 | } |
| 4646 | |
| 4647 | } |
| 4648 | |
| 4649 | if (bfd_link_relocatable (info)) |
| 4650 | { |
| 4651 | /* This is a relocatable link. We don't have to change |
| 4652 | anything, unless the reloc is against a section symbol, |
| 4653 | in which case we have to adjust according to where the |
| 4654 | section symbol winds up in the output section. */ |
| 4655 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 4656 | rel->r_addend += sec->output_offset + sym->st_value; |
| 4657 | |
| 4658 | continue; |
| 4659 | } |
| 4660 | |
| 4661 | /* Sanity check the address. */ |
| 4662 | if (offset > high_address) |
| 4663 | { |
| 4664 | r = bfd_reloc_outofrange; |
| 4665 | goto check_reloc; |
| 4666 | } |
| 4667 | |
| 4668 | if ((r_type >= R_NDS32_DWARF2_OP1_RELA |
| 4669 | && r_type <= R_NDS32_DWARF2_LEB_RELA) |
| 4670 | || r_type >= R_NDS32_RELAX_ENTRY) |
| 4671 | continue; |
| 4672 | |
| 4673 | switch ((int) r_type) |
| 4674 | { |
| 4675 | case R_NDS32_GOTOFF: |
| 4676 | /* Relocation is relative to the start of the global offset |
| 4677 | table (for ld24 rx, #uimm24), e.g. access at label+addend |
| 4678 | |
| 4679 | ld24 rx. #label@GOTOFF + addend |
| 4680 | sub rx, r12. */ |
| 4681 | case R_NDS32_GOTOFF_HI20: |
| 4682 | case R_NDS32_GOTOFF_LO12: |
| 4683 | case R_NDS32_GOTOFF_LO15: |
| 4684 | case R_NDS32_GOTOFF_LO19: |
| 4685 | BFD_ASSERT (sgot != NULL); |
| 4686 | |
| 4687 | relocation -= elf_gp (output_bfd); |
| 4688 | break; |
| 4689 | |
| 4690 | case R_NDS32_9_PLTREL: |
| 4691 | case R_NDS32_25_PLTREL: |
| 4692 | /* Relocation is to the entry for this symbol in the |
| 4693 | procedure linkage table. */ |
| 4694 | |
| 4695 | /* The native assembler will generate a 25_PLTREL reloc |
| 4696 | for a local symbol if you assemble a call from one |
| 4697 | section to another when using -K pic. */ |
| 4698 | if (h == NULL) |
| 4699 | break; |
| 4700 | |
| 4701 | if (h->forced_local) |
| 4702 | break; |
| 4703 | |
| 4704 | /* We didn't make a PLT entry for this symbol. This |
| 4705 | happens when statically linking PIC code, or when |
| 4706 | using -Bsymbolic. */ |
| 4707 | if (h->plt.offset == (bfd_vma) - 1) |
| 4708 | break; |
| 4709 | |
| 4710 | relocation = (splt->output_section->vma |
| 4711 | + splt->output_offset + h->plt.offset); |
| 4712 | break; |
| 4713 | |
| 4714 | case R_NDS32_PLT_GOTREL_HI20: |
| 4715 | case R_NDS32_PLT_GOTREL_LO12: |
| 4716 | case R_NDS32_PLT_GOTREL_LO15: |
| 4717 | case R_NDS32_PLT_GOTREL_LO19: |
| 4718 | case R_NDS32_PLT_GOTREL_LO20: |
| 4719 | if (h == NULL || h->forced_local || h->plt.offset == (bfd_vma) - 1) |
| 4720 | { |
| 4721 | /* We didn't make a PLT entry for this symbol. This |
| 4722 | happens when statically linking PIC code, or when |
| 4723 | using -Bsymbolic. */ |
| 4724 | relocation -= elf_gp (output_bfd); |
| 4725 | break; |
| 4726 | } |
| 4727 | |
| 4728 | relocation = (splt->output_section->vma |
| 4729 | + splt->output_offset + h->plt.offset); |
| 4730 | |
| 4731 | relocation -= elf_gp (output_bfd); |
| 4732 | break; |
| 4733 | |
| 4734 | case R_NDS32_PLTREL_HI20: |
| 4735 | case R_NDS32_PLTREL_LO12: |
| 4736 | |
| 4737 | /* Relocation is to the entry for this symbol in the |
| 4738 | procedure linkage table. */ |
| 4739 | |
| 4740 | /* The native assembler will generate a 25_PLTREL reloc |
| 4741 | for a local symbol if you assemble a call from one |
| 4742 | section to another when using -K pic. */ |
| 4743 | if (h == NULL) |
| 4744 | break; |
| 4745 | |
| 4746 | if (h->forced_local) |
| 4747 | break; |
| 4748 | |
| 4749 | if (h->plt.offset == (bfd_vma) - 1) |
| 4750 | /* We didn't make a PLT entry for this symbol. This |
| 4751 | happens when statically linking PIC code, or when |
| 4752 | using -Bsymbolic. */ |
| 4753 | break; |
| 4754 | |
| 4755 | if (splt == NULL) |
| 4756 | break; |
| 4757 | |
| 4758 | relocation = (splt->output_section->vma |
| 4759 | + splt->output_offset |
| 4760 | + h->plt.offset + 4) |
| 4761 | - (input_section->output_section->vma |
| 4762 | + input_section->output_offset |
| 4763 | + rel->r_offset); |
| 4764 | |
| 4765 | break; |
| 4766 | |
| 4767 | case R_NDS32_GOTPC20: |
| 4768 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 4769 | ld24 rx,#_GLOBAL_OFFSET_TABLE_ */ |
| 4770 | relocation = elf_gp (output_bfd); |
| 4771 | break; |
| 4772 | |
| 4773 | case R_NDS32_GOTPC_HI20: |
| 4774 | case R_NDS32_GOTPC_LO12: |
| 4775 | { |
| 4776 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 4777 | bl .+4 |
| 4778 | seth rx,#high(_GLOBAL_OFFSET_TABLE_) |
| 4779 | or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 4780 | or |
| 4781 | bl .+4 |
| 4782 | seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) |
| 4783 | add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 4784 | */ |
| 4785 | relocation = elf_gp (output_bfd); |
| 4786 | relocation -= (input_section->output_section->vma |
| 4787 | + input_section->output_offset + rel->r_offset); |
| 4788 | break; |
| 4789 | } |
| 4790 | |
| 4791 | case R_NDS32_GOT20: |
| 4792 | /* Fall through. */ |
| 4793 | case R_NDS32_GOT_HI20: |
| 4794 | case R_NDS32_GOT_LO12: |
| 4795 | case R_NDS32_GOT_LO15: |
| 4796 | case R_NDS32_GOT_LO19: |
| 4797 | /* Relocation is to the entry for this symbol in the global |
| 4798 | offset table. */ |
| 4799 | BFD_ASSERT (sgot != NULL); |
| 4800 | |
| 4801 | if (h != NULL) |
| 4802 | { |
| 4803 | bfd_boolean dyn; |
| 4804 | bfd_vma off; |
| 4805 | |
| 4806 | off = h->got.offset; |
| 4807 | BFD_ASSERT (off != (bfd_vma) - 1); |
| 4808 | dyn = htab->root.dynamic_sections_created; |
| 4809 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 4810 | bfd_link_pic (info), |
| 4811 | h) |
| 4812 | || (bfd_link_pic (info) |
| 4813 | && (info->symbolic |
| 4814 | || h->dynindx == -1 |
| 4815 | || h->forced_local) && h->def_regular)) |
| 4816 | { |
| 4817 | /* This is actually a static link, or it is a |
| 4818 | -Bsymbolic link and the symbol is defined |
| 4819 | locally, or the symbol was forced to be local |
| 4820 | because of a version file. We must initialize |
| 4821 | this entry in the global offset table. Since the |
| 4822 | offset must always be a multiple of 4, we use the |
| 4823 | least significant bit to record whether we have |
| 4824 | initialized it already. |
| 4825 | |
| 4826 | When doing a dynamic link, we create a .rela.got |
| 4827 | relocation entry to initialize the value. This |
| 4828 | is done in the finish_dynamic_symbol routine. */ |
| 4829 | if ((off & 1) != 0) |
| 4830 | off &= ~1; |
| 4831 | else |
| 4832 | { |
| 4833 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 4834 | h->got.offset |= 1; |
| 4835 | } |
| 4836 | } |
| 4837 | relocation = sgot->output_section->vma + sgot->output_offset + off |
| 4838 | - elf_gp (output_bfd); |
| 4839 | } |
| 4840 | else |
| 4841 | { |
| 4842 | bfd_vma off; |
| 4843 | bfd_byte *loc; |
| 4844 | |
| 4845 | BFD_ASSERT (local_got_offsets != NULL |
| 4846 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); |
| 4847 | |
| 4848 | off = local_got_offsets[r_symndx]; |
| 4849 | |
| 4850 | /* The offset must always be a multiple of 4. We use |
| 4851 | the least significant bit to record whether we have |
| 4852 | already processed this entry. */ |
| 4853 | if ((off & 1) != 0) |
| 4854 | off &= ~1; |
| 4855 | else |
| 4856 | { |
| 4857 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 4858 | |
| 4859 | if (bfd_link_pic (info)) |
| 4860 | { |
| 4861 | asection *srelgot; |
| 4862 | Elf_Internal_Rela outrel; |
| 4863 | |
| 4864 | /* We need to generate a R_NDS32_RELATIVE reloc |
| 4865 | for the dynamic linker. */ |
| 4866 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 4867 | BFD_ASSERT (srelgot != NULL); |
| 4868 | |
| 4869 | outrel.r_offset = (elf_gp (output_bfd) |
| 4870 | + sgot->output_offset + off); |
| 4871 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); |
| 4872 | outrel.r_addend = relocation; |
| 4873 | loc = srelgot->contents; |
| 4874 | loc += |
| 4875 | srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 4876 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 4877 | ++srelgot->reloc_count; |
| 4878 | } |
| 4879 | local_got_offsets[r_symndx] |= 1; |
| 4880 | } |
| 4881 | relocation = sgot->output_section->vma + sgot->output_offset + off |
| 4882 | - elf_gp (output_bfd); |
| 4883 | } |
| 4884 | |
| 4885 | break; |
| 4886 | |
| 4887 | case R_NDS32_16_RELA: |
| 4888 | case R_NDS32_20_RELA: |
| 4889 | case R_NDS32_5_RELA: |
| 4890 | case R_NDS32_32_RELA: |
| 4891 | case R_NDS32_9_PCREL_RELA: |
| 4892 | case R_NDS32_WORD_9_PCREL_RELA: |
| 4893 | case R_NDS32_10_UPCREL_RELA: |
| 4894 | case R_NDS32_15_PCREL_RELA: |
| 4895 | case R_NDS32_17_PCREL_RELA: |
| 4896 | case R_NDS32_25_PCREL_RELA: |
| 4897 | case R_NDS32_HI20_RELA: |
| 4898 | case R_NDS32_LO12S3_RELA: |
| 4899 | case R_NDS32_LO12S2_RELA: |
| 4900 | case R_NDS32_LO12S2_DP_RELA: |
| 4901 | case R_NDS32_LO12S2_SP_RELA: |
| 4902 | case R_NDS32_LO12S1_RELA: |
| 4903 | case R_NDS32_LO12S0_RELA: |
| 4904 | case R_NDS32_LO12S0_ORI_RELA: |
| 4905 | if (bfd_link_pic (info) && r_symndx != 0 |
| 4906 | && (input_section->flags & SEC_ALLOC) != 0 |
| 4907 | && (eliminate_gc_relocs == 0 |
| 4908 | || (sec && (sec->flags & SEC_EXCLUDE) == 0)) |
| 4909 | && ((r_type != R_NDS32_9_PCREL_RELA |
| 4910 | && r_type != R_NDS32_WORD_9_PCREL_RELA |
| 4911 | && r_type != R_NDS32_10_UPCREL_RELA |
| 4912 | && r_type != R_NDS32_15_PCREL_RELA |
| 4913 | && r_type != R_NDS32_17_PCREL_RELA |
| 4914 | && r_type != R_NDS32_25_PCREL_RELA |
| 4915 | && !(r_type == R_NDS32_32_RELA |
| 4916 | && strcmp (input_section->name, ".eh_frame") == 0)) |
| 4917 | || (h != NULL && h->dynindx != -1 |
| 4918 | && (!info->symbolic || !h->def_regular)))) |
| 4919 | { |
| 4920 | Elf_Internal_Rela outrel; |
| 4921 | bfd_boolean skip, relocate; |
| 4922 | bfd_byte *loc; |
| 4923 | |
| 4924 | /* When generating a shared object, these relocations |
| 4925 | are copied into the output file to be resolved at run |
| 4926 | time. */ |
| 4927 | |
| 4928 | if (sreloc == NULL) |
| 4929 | { |
| 4930 | const char *name; |
| 4931 | |
| 4932 | name = bfd_elf_string_from_elf_section |
| 4933 | (input_bfd, elf_elfheader (input_bfd)->e_shstrndx, |
| 4934 | elf_section_data (input_section)->rela.hdr->sh_name); |
| 4935 | if (name == NULL) |
| 4936 | return FALSE; |
| 4937 | |
| 4938 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 4939 | && strcmp (bfd_get_section_name (input_bfd, |
| 4940 | input_section), |
| 4941 | name + 5) == 0); |
| 4942 | |
| 4943 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 4944 | BFD_ASSERT (sreloc != NULL); |
| 4945 | } |
| 4946 | |
| 4947 | skip = FALSE; |
| 4948 | relocate = FALSE; |
| 4949 | |
| 4950 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
| 4951 | info, |
| 4952 | input_section, |
| 4953 | rel->r_offset); |
| 4954 | if (outrel.r_offset == (bfd_vma) - 1) |
| 4955 | skip = TRUE; |
| 4956 | else if (outrel.r_offset == (bfd_vma) - 2) |
| 4957 | skip = TRUE, relocate = TRUE; |
| 4958 | outrel.r_offset += (input_section->output_section->vma |
| 4959 | + input_section->output_offset); |
| 4960 | |
| 4961 | if (skip) |
| 4962 | memset (&outrel, 0, sizeof outrel); |
| 4963 | else if (r_type == R_NDS32_17_PCREL_RELA |
| 4964 | || r_type == R_NDS32_15_PCREL_RELA |
| 4965 | || r_type == R_NDS32_25_PCREL_RELA) |
| 4966 | { |
| 4967 | BFD_ASSERT (h != NULL && h->dynindx != -1); |
| 4968 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 4969 | outrel.r_addend = rel->r_addend; |
| 4970 | } |
| 4971 | else |
| 4972 | { |
| 4973 | /* h->dynindx may be -1 if this symbol was marked to |
| 4974 | become local. */ |
| 4975 | if (h == NULL |
| 4976 | || ((info->symbolic || h->dynindx == -1) |
| 4977 | && h->def_regular)) |
| 4978 | { |
| 4979 | relocate = TRUE; |
| 4980 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); |
| 4981 | outrel.r_addend = relocation + rel->r_addend; |
| 4982 | } |
| 4983 | else |
| 4984 | { |
| 4985 | BFD_ASSERT (h->dynindx != -1); |
| 4986 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 4987 | outrel.r_addend = rel->r_addend; |
| 4988 | } |
| 4989 | } |
| 4990 | |
| 4991 | loc = sreloc->contents; |
| 4992 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); |
| 4993 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 4994 | ++sreloc->reloc_count; |
| 4995 | |
| 4996 | /* If this reloc is against an external symbol, we do |
| 4997 | not want to fiddle with the addend. Otherwise, we |
| 4998 | need to include the symbol value so that it becomes |
| 4999 | an addend for the dynamic reloc. */ |
| 5000 | if (!relocate) |
| 5001 | continue; |
| 5002 | } |
| 5003 | break; |
| 5004 | |
| 5005 | case R_NDS32_25_ABS_RELA: |
| 5006 | if (bfd_link_pic (info)) |
| 5007 | { |
| 5008 | (*_bfd_error_handler) |
| 5009 | (_("%s: warning: cannot deal R_NDS32_25_ABS_RELA in shared " |
| 5010 | "mode."), bfd_get_filename (input_bfd)); |
| 5011 | return FALSE; |
| 5012 | } |
| 5013 | break; |
| 5014 | |
| 5015 | case R_NDS32_9_PCREL: |
| 5016 | r = nds32_elf_do_9_pcrel_reloc (input_bfd, howto, input_section, |
| 5017 | contents, offset, |
| 5018 | sec, relocation, addend); |
| 5019 | goto check_reloc; |
| 5020 | |
| 5021 | case R_NDS32_HI20: |
| 5022 | { |
| 5023 | Elf_Internal_Rela *lorel; |
| 5024 | |
| 5025 | /* We allow an arbitrary number of HI20 relocs before the |
| 5026 | LO12 reloc. This permits gcc to emit the HI and LO relocs |
| 5027 | itself. */ |
| 5028 | for (lorel = rel + 1; |
| 5029 | (lorel < relend |
| 5030 | && ELF32_R_TYPE (lorel->r_info) == R_NDS32_HI20); lorel++) |
| 5031 | continue; |
| 5032 | if (lorel < relend |
| 5033 | && (ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S3 |
| 5034 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S2 |
| 5035 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S1 |
| 5036 | || ELF32_R_TYPE (lorel->r_info) == R_NDS32_LO12S0)) |
| 5037 | { |
| 5038 | nds32_elf_relocate_hi20 (input_bfd, r_type, rel, lorel, |
| 5039 | contents, relocation + addend); |
| 5040 | r = bfd_reloc_ok; |
| 5041 | } |
| 5042 | else |
| 5043 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5044 | contents, offset, relocation, |
| 5045 | addend); |
| 5046 | } |
| 5047 | |
| 5048 | goto check_reloc; |
| 5049 | |
| 5050 | case R_NDS32_GOT17S2_RELA: |
| 5051 | case R_NDS32_GOT15S2_RELA: |
| 5052 | { |
| 5053 | bfd_vma off; |
| 5054 | |
| 5055 | BFD_ASSERT (sgot != NULL); |
| 5056 | |
| 5057 | if (h != NULL) |
| 5058 | { |
| 5059 | bfd_boolean dyn; |
| 5060 | |
| 5061 | off = h->got.offset; |
| 5062 | BFD_ASSERT (off != (bfd_vma) - 1); |
| 5063 | |
| 5064 | dyn = htab->root.dynamic_sections_created; |
| 5065 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL |
| 5066 | (dyn, bfd_link_pic (info), h) |
| 5067 | || (bfd_link_pic (info) |
| 5068 | && (info->symbolic |
| 5069 | || h->dynindx == -1 |
| 5070 | || h->forced_local) |
| 5071 | && h->def_regular)) |
| 5072 | { |
| 5073 | /* This is actually a static link, or it is a |
| 5074 | -Bsymbolic link and the symbol is defined |
| 5075 | locally, or the symbol was forced to be local |
| 5076 | because of a version file. We must initialize |
| 5077 | this entry in the global offset table. Since the |
| 5078 | offset must always be a multiple of 4, we use the |
| 5079 | least significant bit to record whether we have |
| 5080 | initialized it already. |
| 5081 | |
| 5082 | When doing a dynamic link, we create a .rela.got |
| 5083 | relocation entry to initialize the value. This |
| 5084 | is done in the finish_dynamic_symbol routine. */ |
| 5085 | if ((off & 1) != 0) |
| 5086 | off &= ~1; |
| 5087 | else |
| 5088 | { |
| 5089 | bfd_put_32 (output_bfd, relocation, |
| 5090 | sgot->contents + off); |
| 5091 | h->got.offset |= 1; |
| 5092 | } |
| 5093 | } |
| 5094 | } |
| 5095 | else |
| 5096 | { |
| 5097 | bfd_byte *loc; |
| 5098 | |
| 5099 | BFD_ASSERT (local_got_offsets != NULL |
| 5100 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); |
| 5101 | |
| 5102 | off = local_got_offsets[r_symndx]; |
| 5103 | |
| 5104 | /* The offset must always be a multiple of 4. We use |
| 5105 | the least significant bit to record whether we have |
| 5106 | already processed this entry. */ |
| 5107 | if ((off & 1) != 0) |
| 5108 | off &= ~1; |
| 5109 | else |
| 5110 | { |
| 5111 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 5112 | |
| 5113 | if (bfd_link_pic (info)) |
| 5114 | { |
| 5115 | asection *srelgot; |
| 5116 | Elf_Internal_Rela outrel; |
| 5117 | |
| 5118 | /* We need to generate a R_NDS32_RELATIVE reloc |
| 5119 | for the dynamic linker. */ |
| 5120 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 5121 | BFD_ASSERT (srelgot != NULL); |
| 5122 | |
| 5123 | outrel.r_offset = (elf_gp (output_bfd) |
| 5124 | + sgot->output_offset + off); |
| 5125 | outrel.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); |
| 5126 | outrel.r_addend = relocation; |
| 5127 | loc = srelgot->contents; |
| 5128 | loc += |
| 5129 | srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 5130 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 5131 | ++srelgot->reloc_count; |
| 5132 | } |
| 5133 | local_got_offsets[r_symndx] |= 1; |
| 5134 | } |
| 5135 | } |
| 5136 | relocation = sgot->output_section->vma + sgot->output_offset + off |
| 5137 | - elf_gp (output_bfd); |
| 5138 | } |
| 5139 | if (relocation & align) |
| 5140 | { |
| 5141 | /* Incorrect alignment. */ |
| 5142 | (*_bfd_error_handler) |
| 5143 | (_("%B: warning: unaligned access to GOT entry."), input_bfd); |
| 5144 | ret = FALSE; |
| 5145 | r = bfd_reloc_dangerous; |
| 5146 | goto check_reloc; |
| 5147 | } |
| 5148 | break; |
| 5149 | |
| 5150 | case R_NDS32_SDA16S3_RELA: |
| 5151 | case R_NDS32_SDA15S3_RELA: |
| 5152 | case R_NDS32_SDA15S3: |
| 5153 | align = 0x7; |
| 5154 | goto handle_sda; |
| 5155 | |
| 5156 | case R_NDS32_SDA17S2_RELA: |
| 5157 | case R_NDS32_SDA15S2_RELA: |
| 5158 | case R_NDS32_SDA12S2_SP_RELA: |
| 5159 | case R_NDS32_SDA12S2_DP_RELA: |
| 5160 | case R_NDS32_SDA15S2: |
| 5161 | case R_NDS32_SDA_FP7U2_RELA: |
| 5162 | align = 0x3; |
| 5163 | goto handle_sda; |
| 5164 | |
| 5165 | case R_NDS32_SDA18S1_RELA: |
| 5166 | case R_NDS32_SDA15S1_RELA: |
| 5167 | case R_NDS32_SDA15S1: |
| 5168 | align = 0x1; |
| 5169 | goto handle_sda; |
| 5170 | |
| 5171 | case R_NDS32_SDA19S0_RELA: |
| 5172 | case R_NDS32_SDA15S0_RELA: |
| 5173 | case R_NDS32_SDA15S0: |
| 5174 | { |
| 5175 | align = 0x0; |
| 5176 | handle_sda: |
| 5177 | BFD_ASSERT (sec != NULL); |
| 5178 | |
| 5179 | /* If the symbol is in the abs section, the out_bfd will be null. |
| 5180 | This happens when the relocation has a symbol@GOTOFF. */ |
| 5181 | r = nds32_elf_final_sda_base (output_bfd, info, &gp, FALSE); |
| 5182 | if (r != bfd_reloc_ok) |
| 5183 | { |
| 5184 | (*_bfd_error_handler) |
| 5185 | (_("%B: warning: relocate SDA_BASE failed."), input_bfd); |
| 5186 | ret = FALSE; |
| 5187 | goto check_reloc; |
| 5188 | } |
| 5189 | |
| 5190 | /* At this point `relocation' contains the object's |
| 5191 | address. */ |
| 5192 | if (r_type == R_NDS32_SDA_FP7U2_RELA) |
| 5193 | { |
| 5194 | relocation -= fpbase_addr; |
| 5195 | } |
| 5196 | else |
| 5197 | relocation -= gp; |
| 5198 | /* Now it contains the offset from _SDA_BASE_. */ |
| 5199 | |
| 5200 | /* Make sure alignment is correct. */ |
| 5201 | |
| 5202 | if (relocation & align) |
| 5203 | { |
| 5204 | /* Incorrect alignment. */ |
| 5205 | (*_bfd_error_handler) |
| 5206 | (_("%B(%A): warning: unaligned small data access of type %d."), |
| 5207 | input_bfd, input_section, r_type); |
| 5208 | ret = FALSE; |
| 5209 | goto check_reloc; |
| 5210 | } |
| 5211 | } |
| 5212 | |
| 5213 | break; |
| 5214 | case R_NDS32_17IFC_PCREL_RELA: |
| 5215 | case R_NDS32_10IFCU_PCREL_RELA: |
| 5216 | /* do nothing */ |
| 5217 | break; |
| 5218 | |
| 5219 | case R_NDS32_TLS_LE_HI20: |
| 5220 | case R_NDS32_TLS_LE_LO12: |
| 5221 | case R_NDS32_TLS_LE_20: |
| 5222 | case R_NDS32_TLS_LE_15S0: |
| 5223 | case R_NDS32_TLS_LE_15S1: |
| 5224 | case R_NDS32_TLS_LE_15S2: |
| 5225 | if (elf_hash_table (info)->tls_sec != NULL) |
| 5226 | relocation -= (elf_hash_table (info)->tls_sec->vma + TP_OFFSET); |
| 5227 | break; |
| 5228 | case R_NDS32_TLS_IE_HI20: |
| 5229 | case R_NDS32_TLS_IE_LO12S2: |
| 5230 | { |
| 5231 | /* Relocation is to the entry for this symbol in the global |
| 5232 | offset table. */ |
| 5233 | unsigned int tls_type; |
| 5234 | asection *srelgot; |
| 5235 | Elf_Internal_Rela outrel; |
| 5236 | bfd_vma off; |
| 5237 | bfd_byte *loc; |
| 5238 | int indx = 0; |
| 5239 | |
| 5240 | BFD_ASSERT (sgot != NULL); |
| 5241 | if (h != NULL) |
| 5242 | { |
| 5243 | bfd_boolean dyn; |
| 5244 | |
| 5245 | off = h->got.offset; |
| 5246 | BFD_ASSERT (off != (bfd_vma) - 1); |
| 5247 | dyn = htab->root.dynamic_sections_created; |
| 5248 | tls_type = ((struct elf_nds32_link_hash_entry *) h)->tls_type; |
| 5249 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) |
| 5250 | && (!bfd_link_pic (info) |
| 5251 | || !SYMBOL_REFERENCES_LOCAL (info, h))) |
| 5252 | indx = h->dynindx; |
| 5253 | } |
| 5254 | else |
| 5255 | { |
| 5256 | /* Never happen currently. */ |
| 5257 | BFD_ASSERT (local_got_offsets != NULL |
| 5258 | && local_got_offsets[r_symndx] != (bfd_vma) - 1); |
| 5259 | |
| 5260 | off = local_got_offsets[r_symndx]; |
| 5261 | |
| 5262 | tls_type = elf32_nds32_local_got_tls_type (input_bfd)[r_symndx]; |
| 5263 | } |
| 5264 | relocation = sgot->output_section->vma + sgot->output_offset + off; |
| 5265 | |
| 5266 | if (r_type == R_NDS32_TLS_IE_LO12S2) |
| 5267 | break; |
| 5268 | |
| 5269 | /* The offset must always be a multiple of 4. We use |
| 5270 | the least significant bit to record whether we have |
| 5271 | already processed this entry. */ |
| 5272 | if ((off & 1) != 0) |
| 5273 | off &= ~1; |
| 5274 | else |
| 5275 | { |
| 5276 | bfd_boolean need_relocs = FALSE; |
| 5277 | srelgot = htab->srelgot; |
| 5278 | if ((bfd_link_pic (info) || indx != 0) |
| 5279 | && (h == NULL |
| 5280 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
| 5281 | || h->root.type != bfd_link_hash_undefweak)) |
| 5282 | { |
| 5283 | need_relocs = TRUE; |
| 5284 | BFD_ASSERT (srelgot != NULL); |
| 5285 | } |
| 5286 | if (tls_type & GOT_TLS_IE) |
| 5287 | { |
| 5288 | if (need_relocs) |
| 5289 | { |
| 5290 | if (h->dynindx == 0) |
| 5291 | outrel.r_addend = relocation - dtpoff_base (info); |
| 5292 | else |
| 5293 | outrel.r_addend = 0; |
| 5294 | outrel.r_offset = (sgot->output_section->vma |
| 5295 | + sgot->output_offset |
| 5296 | + off); |
| 5297 | outrel.r_info = |
| 5298 | ELF32_R_INFO (h->dynindx, R_NDS32_TLS_TPOFF); |
| 5299 | |
| 5300 | loc = srelgot->contents; |
| 5301 | loc += |
| 5302 | srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 5303 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 5304 | ++srelgot->reloc_count; |
| 5305 | } |
| 5306 | else |
| 5307 | bfd_put_32 (output_bfd, h->root.u.def.value - TP_OFFSET, |
| 5308 | sgot->contents + off); |
| 5309 | } |
| 5310 | } |
| 5311 | } |
| 5312 | break; |
| 5313 | |
| 5314 | /* DON'T fall through. */ |
| 5315 | |
| 5316 | default: |
| 5317 | /* OLD_NDS32_RELOC. */ |
| 5318 | |
| 5319 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5320 | contents, offset, relocation, addend); |
| 5321 | goto check_reloc; |
| 5322 | } |
| 5323 | |
| 5324 | switch ((int) r_type) |
| 5325 | { |
| 5326 | case R_NDS32_20_RELA: |
| 5327 | case R_NDS32_5_RELA: |
| 5328 | case R_NDS32_9_PCREL_RELA: |
| 5329 | case R_NDS32_WORD_9_PCREL_RELA: |
| 5330 | case R_NDS32_10_UPCREL_RELA: |
| 5331 | case R_NDS32_15_PCREL_RELA: |
| 5332 | case R_NDS32_17_PCREL_RELA: |
| 5333 | case R_NDS32_25_PCREL_RELA: |
| 5334 | case R_NDS32_25_ABS_RELA: |
| 5335 | case R_NDS32_HI20_RELA: |
| 5336 | case R_NDS32_LO12S3_RELA: |
| 5337 | case R_NDS32_LO12S2_RELA: |
| 5338 | case R_NDS32_LO12S2_DP_RELA: |
| 5339 | case R_NDS32_LO12S2_SP_RELA: |
| 5340 | case R_NDS32_LO12S1_RELA: |
| 5341 | case R_NDS32_LO12S0_RELA: |
| 5342 | case R_NDS32_LO12S0_ORI_RELA: |
| 5343 | case R_NDS32_SDA16S3_RELA: |
| 5344 | case R_NDS32_SDA17S2_RELA: |
| 5345 | case R_NDS32_SDA18S1_RELA: |
| 5346 | case R_NDS32_SDA19S0_RELA: |
| 5347 | case R_NDS32_SDA15S3_RELA: |
| 5348 | case R_NDS32_SDA15S2_RELA: |
| 5349 | case R_NDS32_SDA12S2_DP_RELA: |
| 5350 | case R_NDS32_SDA12S2_SP_RELA: |
| 5351 | case R_NDS32_SDA15S1_RELA: |
| 5352 | case R_NDS32_SDA15S0_RELA: |
| 5353 | case R_NDS32_SDA_FP7U2_RELA: |
| 5354 | case R_NDS32_9_PLTREL: |
| 5355 | case R_NDS32_25_PLTREL: |
| 5356 | case R_NDS32_GOT20: |
| 5357 | case R_NDS32_GOT_HI20: |
| 5358 | case R_NDS32_GOT_LO12: |
| 5359 | case R_NDS32_GOT_LO15: |
| 5360 | case R_NDS32_GOT_LO19: |
| 5361 | case R_NDS32_GOT15S2_RELA: |
| 5362 | case R_NDS32_GOT17S2_RELA: |
| 5363 | case R_NDS32_GOTPC20: |
| 5364 | case R_NDS32_GOTPC_HI20: |
| 5365 | case R_NDS32_GOTPC_LO12: |
| 5366 | case R_NDS32_GOTOFF: |
| 5367 | case R_NDS32_GOTOFF_HI20: |
| 5368 | case R_NDS32_GOTOFF_LO12: |
| 5369 | case R_NDS32_GOTOFF_LO15: |
| 5370 | case R_NDS32_GOTOFF_LO19: |
| 5371 | case R_NDS32_PLTREL_HI20: |
| 5372 | case R_NDS32_PLTREL_LO12: |
| 5373 | case R_NDS32_PLT_GOTREL_HI20: |
| 5374 | case R_NDS32_PLT_GOTREL_LO12: |
| 5375 | case R_NDS32_PLT_GOTREL_LO15: |
| 5376 | case R_NDS32_PLT_GOTREL_LO19: |
| 5377 | case R_NDS32_PLT_GOTREL_LO20: |
| 5378 | case R_NDS32_17IFC_PCREL_RELA: |
| 5379 | case R_NDS32_10IFCU_PCREL_RELA: |
| 5380 | case R_NDS32_TLS_LE_HI20: |
| 5381 | case R_NDS32_TLS_LE_LO12: |
| 5382 | case R_NDS32_TLS_IE_HI20: |
| 5383 | case R_NDS32_TLS_IE_LO12S2: |
| 5384 | case R_NDS32_TLS_LE_20: |
| 5385 | case R_NDS32_TLS_LE_15S0: |
| 5386 | case R_NDS32_TLS_LE_15S1: |
| 5387 | case R_NDS32_TLS_LE_15S2: |
| 5388 | /* Instruction related relocs must handle endian properly. */ |
| 5389 | /* NOTE: PIC IS NOT HANDLE YET; DO IT LATER. */ |
| 5390 | r = nds32_elf_final_link_relocate (howto, input_bfd, |
| 5391 | input_section, contents, |
| 5392 | rel->r_offset, relocation, |
| 5393 | rel->r_addend); |
| 5394 | break; |
| 5395 | |
| 5396 | default: |
| 5397 | /* All other relocs can use default handler. */ |
| 5398 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 5399 | contents, rel->r_offset, |
| 5400 | relocation, rel->r_addend); |
| 5401 | break; |
| 5402 | } |
| 5403 | |
| 5404 | check_reloc: |
| 5405 | |
| 5406 | if (r != bfd_reloc_ok) |
| 5407 | { |
| 5408 | /* FIXME: This should be generic enough to go in a utility. */ |
| 5409 | const char *name; |
| 5410 | |
| 5411 | if (h != NULL) |
| 5412 | name = h->root.root.string; |
| 5413 | else |
| 5414 | { |
| 5415 | name = bfd_elf_string_from_elf_section |
| 5416 | (input_bfd, symtab_hdr->sh_link, sym->st_name); |
| 5417 | if (name == NULL || *name == '\0') |
| 5418 | name = bfd_section_name (input_bfd, sec); |
| 5419 | } |
| 5420 | |
| 5421 | if (errmsg != NULL) |
| 5422 | goto common_error; |
| 5423 | |
| 5424 | switch (r) |
| 5425 | { |
| 5426 | case bfd_reloc_overflow: |
| 5427 | (*info->callbacks->reloc_overflow) |
| 5428 | (info, (h ? &h->root : NULL), name, howto->name, |
| 5429 | (bfd_vma) 0, input_bfd, input_section, offset); |
| 5430 | break; |
| 5431 | |
| 5432 | case bfd_reloc_undefined: |
| 5433 | (*info->callbacks->undefined_symbol) |
| 5434 | (info, name, input_bfd, input_section, offset, TRUE); |
| 5435 | break; |
| 5436 | |
| 5437 | case bfd_reloc_outofrange: |
| 5438 | errmsg = _("internal error: out of range error"); |
| 5439 | goto common_error; |
| 5440 | |
| 5441 | case bfd_reloc_notsupported: |
| 5442 | errmsg = _("internal error: unsupported relocation error"); |
| 5443 | goto common_error; |
| 5444 | |
| 5445 | case bfd_reloc_dangerous: |
| 5446 | errmsg = _("internal error: dangerous error"); |
| 5447 | goto common_error; |
| 5448 | |
| 5449 | default: |
| 5450 | errmsg = _("internal error: unknown error"); |
| 5451 | /* Fall through. */ |
| 5452 | |
| 5453 | common_error: |
| 5454 | (*info->callbacks->warning) (info, errmsg, name, input_bfd, |
| 5455 | input_section, offset); |
| 5456 | break; |
| 5457 | } |
| 5458 | } |
| 5459 | } |
| 5460 | |
| 5461 | return ret; |
| 5462 | } |
| 5463 | |
| 5464 | /* Finish up dynamic symbol handling. We set the contents of various |
| 5465 | dynamic sections here. */ |
| 5466 | |
| 5467 | static bfd_boolean |
| 5468 | nds32_elf_finish_dynamic_symbol (bfd *output_bfd, struct bfd_link_info *info, |
| 5469 | struct elf_link_hash_entry *h, Elf_Internal_Sym *sym) |
| 5470 | { |
| 5471 | struct elf_nds32_link_hash_table *htab; |
| 5472 | bfd_byte *loc; |
| 5473 | |
| 5474 | htab = nds32_elf_hash_table (info); |
| 5475 | |
| 5476 | if (h->plt.offset != (bfd_vma) - 1) |
| 5477 | { |
| 5478 | asection *splt; |
| 5479 | asection *sgot; |
| 5480 | asection *srela; |
| 5481 | |
| 5482 | bfd_vma plt_index; |
| 5483 | bfd_vma got_offset; |
| 5484 | bfd_vma local_plt_offset; |
| 5485 | Elf_Internal_Rela rela; |
| 5486 | |
| 5487 | /* This symbol has an entry in the procedure linkage table. Set |
| 5488 | it up. */ |
| 5489 | |
| 5490 | BFD_ASSERT (h->dynindx != -1); |
| 5491 | |
| 5492 | splt = htab->splt; |
| 5493 | sgot = htab->sgotplt; |
| 5494 | srela = htab->srelplt; |
| 5495 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
| 5496 | |
| 5497 | /* Get the index in the procedure linkage table which |
| 5498 | corresponds to this symbol. This is the index of this symbol |
| 5499 | in all the symbols for which we are making plt entries. The |
| 5500 | first entry in the procedure linkage table is reserved. */ |
| 5501 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; |
| 5502 | |
| 5503 | /* Get the offset into the .got table of the entry that |
| 5504 | corresponds to this function. Each .got entry is 4 bytes. |
| 5505 | The first three are reserved. */ |
| 5506 | got_offset = (plt_index + 3) * 4; |
| 5507 | |
| 5508 | /* Fill in the entry in the procedure linkage table. */ |
| 5509 | if (!bfd_link_pic (info)) |
| 5510 | { |
| 5511 | unsigned long insn; |
| 5512 | |
| 5513 | insn = PLT_ENTRY_WORD0 + (((sgot->output_section->vma |
| 5514 | + sgot->output_offset + got_offset) >> 12) |
| 5515 | & 0xfffff); |
| 5516 | bfd_putb32 (insn, splt->contents + h->plt.offset); |
| 5517 | |
| 5518 | insn = PLT_ENTRY_WORD1 + (((sgot->output_section->vma |
| 5519 | + sgot->output_offset + got_offset) & 0x0fff) |
| 5520 | >> 2); |
| 5521 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); |
| 5522 | |
| 5523 | insn = PLT_ENTRY_WORD2; |
| 5524 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); |
| 5525 | |
| 5526 | insn = PLT_ENTRY_WORD3 + (plt_index & 0x7ffff); |
| 5527 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); |
| 5528 | |
| 5529 | insn = PLT_ENTRY_WORD4 |
| 5530 | + (((unsigned int) ((-(h->plt.offset + 16)) >> 1)) & 0xffffff); |
| 5531 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); |
| 5532 | local_plt_offset = 12; |
| 5533 | } |
| 5534 | else |
| 5535 | { |
| 5536 | /* sda_base must be set at this time. */ |
| 5537 | unsigned long insn; |
| 5538 | long offset; |
| 5539 | |
| 5540 | /* FIXME, sda_base is 65536, it will damage opcode. */ |
| 5541 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ |
| 5542 | offset = sgot->output_section->vma + sgot->output_offset + got_offset |
| 5543 | - elf_gp (output_bfd); |
| 5544 | insn = PLT_PIC_ENTRY_WORD0 + ((offset >> 12) & 0xfffff); |
| 5545 | bfd_putb32 (insn, splt->contents + h->plt.offset); |
| 5546 | |
| 5547 | insn = PLT_PIC_ENTRY_WORD1 + (offset & 0xfff); |
| 5548 | bfd_putb32 (insn, splt->contents + h->plt.offset + 4); |
| 5549 | |
| 5550 | insn = PLT_PIC_ENTRY_WORD2; |
| 5551 | bfd_putb32 (insn, splt->contents + h->plt.offset + 8); |
| 5552 | |
| 5553 | insn = PLT_PIC_ENTRY_WORD3; |
| 5554 | bfd_putb32 (insn, splt->contents + h->plt.offset + 12); |
| 5555 | |
| 5556 | insn = PLT_PIC_ENTRY_WORD4 + (plt_index & 0x7fffff); |
| 5557 | bfd_putb32 (insn, splt->contents + h->plt.offset + 16); |
| 5558 | |
| 5559 | insn = PLT_PIC_ENTRY_WORD5 |
| 5560 | + (((unsigned int) ((-(h->plt.offset + 20)) >> 1)) & 0xffffff); |
| 5561 | bfd_putb32 (insn, splt->contents + h->plt.offset + 20); |
| 5562 | |
| 5563 | local_plt_offset = 16; |
| 5564 | } |
| 5565 | |
| 5566 | /* Fill in the entry in the global offset table, |
| 5567 | so it will fall through to the next instruction for the first time. */ |
| 5568 | bfd_put_32 (output_bfd, |
| 5569 | (splt->output_section->vma + splt->output_offset |
| 5570 | + h->plt.offset + local_plt_offset), |
| 5571 | sgot->contents + got_offset); |
| 5572 | |
| 5573 | /* Fill in the entry in the .rela.plt section. */ |
| 5574 | rela.r_offset = (sgot->output_section->vma |
| 5575 | + sgot->output_offset + got_offset); |
| 5576 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_JMP_SLOT); |
| 5577 | rela.r_addend = 0; |
| 5578 | loc = srela->contents; |
| 5579 | loc += plt_index * sizeof (Elf32_External_Rela); |
| 5580 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5581 | |
| 5582 | if (!h->def_regular) |
| 5583 | { |
| 5584 | /* Mark the symbol as undefined, rather than as defined in |
| 5585 | the .plt section. Leave the value alone. */ |
| 5586 | sym->st_shndx = SHN_UNDEF; |
| 5587 | if (!h->ref_regular_nonweak) |
| 5588 | sym->st_value = 0; |
| 5589 | } |
| 5590 | } |
| 5591 | |
| 5592 | if (h->got.offset != (bfd_vma) - 1) |
| 5593 | { |
| 5594 | asection *sgot; |
| 5595 | asection *srela; |
| 5596 | Elf_Internal_Rela rela; |
| 5597 | |
| 5598 | /* This symbol has an entry in the global offset table. |
| 5599 | Set it up. */ |
| 5600 | |
| 5601 | sgot = htab->sgot; |
| 5602 | srela = htab->srelgot; |
| 5603 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 5604 | |
| 5605 | rela.r_offset = (sgot->output_section->vma |
| 5606 | + sgot->output_offset + (h->got.offset & ~1)); |
| 5607 | |
| 5608 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 5609 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 5610 | the symbol was forced to be local because of a version file. |
| 5611 | The entry in the global offset table will already have been |
| 5612 | initialized in the relocate_section function. */ |
| 5613 | if (bfd_link_pic (info) |
| 5614 | && (info->symbolic |
| 5615 | || h->dynindx == -1 || h->forced_local) && h->def_regular) |
| 5616 | { |
| 5617 | rela.r_info = ELF32_R_INFO (0, R_NDS32_RELATIVE); |
| 5618 | rela.r_addend = (h->root.u.def.value |
| 5619 | + h->root.u.def.section->output_section->vma |
| 5620 | + h->root.u.def.section->output_offset); |
| 5621 | } |
| 5622 | else |
| 5623 | { |
| 5624 | BFD_ASSERT ((h->got.offset & 1) == 0); |
| 5625 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
| 5626 | sgot->contents + h->got.offset); |
| 5627 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_GLOB_DAT); |
| 5628 | rela.r_addend = 0; |
| 5629 | } |
| 5630 | |
| 5631 | loc = srela->contents; |
| 5632 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); |
| 5633 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5634 | ++srela->reloc_count; |
| 5635 | } |
| 5636 | |
| 5637 | if (h->needs_copy) |
| 5638 | { |
| 5639 | asection *s; |
| 5640 | Elf_Internal_Rela rela; |
| 5641 | |
| 5642 | /* This symbols needs a copy reloc. Set it up. */ |
| 5643 | |
| 5644 | BFD_ASSERT (h->dynindx != -1 |
| 5645 | && (h->root.type == bfd_link_hash_defined |
| 5646 | || h->root.type == bfd_link_hash_defweak)); |
| 5647 | |
| 5648 | s = bfd_get_section_by_name (h->root.u.def.section->owner, ".rela.bss"); |
| 5649 | BFD_ASSERT (s != NULL); |
| 5650 | |
| 5651 | rela.r_offset = (h->root.u.def.value |
| 5652 | + h->root.u.def.section->output_section->vma |
| 5653 | + h->root.u.def.section->output_offset); |
| 5654 | rela.r_info = ELF32_R_INFO (h->dynindx, R_NDS32_COPY); |
| 5655 | rela.r_addend = 0; |
| 5656 | loc = s->contents; |
| 5657 | loc += s->reloc_count * sizeof (Elf32_External_Rela); |
| 5658 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 5659 | ++s->reloc_count; |
| 5660 | } |
| 5661 | |
| 5662 | /* Mark some specially defined symbols as absolute. */ |
| 5663 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 5664 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 5665 | sym->st_shndx = SHN_ABS; |
| 5666 | |
| 5667 | return TRUE; |
| 5668 | } |
| 5669 | |
| 5670 | |
| 5671 | /* Finish up the dynamic sections. */ |
| 5672 | |
| 5673 | static bfd_boolean |
| 5674 | nds32_elf_finish_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info) |
| 5675 | { |
| 5676 | struct elf_nds32_link_hash_table *htab; |
| 5677 | bfd *dynobj; |
| 5678 | asection *sdyn; |
| 5679 | asection *sgot; |
| 5680 | |
| 5681 | htab = nds32_elf_hash_table (info); |
| 5682 | dynobj = htab->root.dynobj; |
| 5683 | |
| 5684 | sgot = htab->sgotplt; |
| 5685 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 5686 | |
| 5687 | if (htab->root.dynamic_sections_created) |
| 5688 | { |
| 5689 | asection *splt; |
| 5690 | Elf32_External_Dyn *dyncon, *dynconend; |
| 5691 | |
| 5692 | BFD_ASSERT (sgot != NULL && sdyn != NULL); |
| 5693 | |
| 5694 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 5695 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5696 | |
| 5697 | for (; dyncon < dynconend; dyncon++) |
| 5698 | { |
| 5699 | Elf_Internal_Dyn dyn; |
| 5700 | asection *s; |
| 5701 | |
| 5702 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 5703 | |
| 5704 | switch (dyn.d_tag) |
| 5705 | { |
| 5706 | default: |
| 5707 | break; |
| 5708 | |
| 5709 | case DT_PLTGOT: |
| 5710 | s = htab->sgotplt; |
| 5711 | goto get_vma; |
| 5712 | case DT_JMPREL: |
| 5713 | s = htab->srelplt; |
| 5714 | get_vma: |
| 5715 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 5716 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5717 | break; |
| 5718 | |
| 5719 | case DT_PLTRELSZ: |
| 5720 | s = htab->srelplt; |
| 5721 | dyn.d_un.d_val = s->size; |
| 5722 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5723 | break; |
| 5724 | |
| 5725 | case DT_RELASZ: |
| 5726 | /* My reading of the SVR4 ABI indicates that the |
| 5727 | procedure linkage table relocs (DT_JMPREL) should be |
| 5728 | included in the overall relocs (DT_RELA). This is |
| 5729 | what Solaris does. However, UnixWare can not handle |
| 5730 | that case. Therefore, we override the DT_RELASZ entry |
| 5731 | here to make it not include the JMPREL relocs. Since |
| 5732 | the linker script arranges for .rela.plt to follow all |
| 5733 | other relocation sections, we don't have to worry |
| 5734 | about changing the DT_RELA entry. */ |
| 5735 | if (htab->srelplt != NULL) |
| 5736 | { |
| 5737 | s = htab->srelplt; |
| 5738 | dyn.d_un.d_val -= s->size; |
| 5739 | } |
| 5740 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5741 | break; |
| 5742 | } |
| 5743 | } |
| 5744 | |
| 5745 | /* Fill in the first entry in the procedure linkage table. */ |
| 5746 | splt = htab->splt; |
| 5747 | if (splt && splt->size > 0) |
| 5748 | { |
| 5749 | if (bfd_link_pic (info)) |
| 5750 | { |
| 5751 | unsigned long insn; |
| 5752 | long offset; |
| 5753 | |
| 5754 | /* FIXME, sda_base is 65536, it will damage opcode. */ |
| 5755 | /* insn = PLT_PIC_ENTRY_WORD0 + (((got_offset - sda_base) >> 2) & 0x7fff); */ |
| 5756 | offset = sgot->output_section->vma + sgot->output_offset + 4 |
| 5757 | - elf_gp (output_bfd); |
| 5758 | insn = PLT0_PIC_ENTRY_WORD0 | ((offset >> 12) & 0xfffff); |
| 5759 | bfd_putb32 (insn, splt->contents); |
| 5760 | |
| 5761 | /* insn = PLT0_PIC_ENTRY_WORD0 | (((8 - sda_base) >> 2) & 0x7fff) ; */ |
| 5762 | /* here has a typo? */ |
| 5763 | insn = PLT0_PIC_ENTRY_WORD1 | (offset & 0xfff); |
| 5764 | bfd_putb32 (insn, splt->contents + 4); |
| 5765 | |
| 5766 | insn = PLT0_PIC_ENTRY_WORD2; |
| 5767 | bfd_putb32 (insn, splt->contents + 8); |
| 5768 | |
| 5769 | insn = PLT0_PIC_ENTRY_WORD3; |
| 5770 | bfd_putb32 (insn, splt->contents + 12); |
| 5771 | |
| 5772 | insn = PLT0_PIC_ENTRY_WORD4; |
| 5773 | bfd_putb32 (insn, splt->contents + 16); |
| 5774 | |
| 5775 | insn = PLT0_PIC_ENTRY_WORD5; |
| 5776 | bfd_putb32 (insn, splt->contents + 20); |
| 5777 | } |
| 5778 | else |
| 5779 | { |
| 5780 | unsigned long insn; |
| 5781 | unsigned long addr; |
| 5782 | |
| 5783 | /* addr = .got + 4 */ |
| 5784 | addr = sgot->output_section->vma + sgot->output_offset + 4; |
| 5785 | insn = PLT0_ENTRY_WORD0 | ((addr >> 12) & 0xfffff); |
| 5786 | bfd_putb32 (insn, splt->contents); |
| 5787 | |
| 5788 | insn = PLT0_ENTRY_WORD1 | (addr & 0x0fff); |
| 5789 | bfd_putb32 (insn, splt->contents + 4); |
| 5790 | |
| 5791 | insn = PLT0_ENTRY_WORD2; |
| 5792 | bfd_putb32 (insn, splt->contents + 8); |
| 5793 | |
| 5794 | insn = PLT0_ENTRY_WORD3; |
| 5795 | bfd_putb32 (insn, splt->contents + 12); |
| 5796 | |
| 5797 | insn = PLT0_ENTRY_WORD4; |
| 5798 | bfd_putb32 (insn, splt->contents + 16); |
| 5799 | } |
| 5800 | |
| 5801 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 5802 | PLT_ENTRY_SIZE; |
| 5803 | } |
| 5804 | } |
| 5805 | |
| 5806 | /* Fill in the first three entries in the global offset table. */ |
| 5807 | if (sgot && sgot->size > 0) |
| 5808 | { |
| 5809 | if (sdyn == NULL) |
| 5810 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 5811 | else |
| 5812 | bfd_put_32 (output_bfd, |
| 5813 | sdyn->output_section->vma + sdyn->output_offset, |
| 5814 | sgot->contents); |
| 5815 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
| 5816 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
| 5817 | |
| 5818 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 5819 | } |
| 5820 | |
| 5821 | return TRUE; |
| 5822 | } |
| 5823 | \f |
| 5824 | |
| 5825 | /* Set the right machine number. */ |
| 5826 | |
| 5827 | static bfd_boolean |
| 5828 | nds32_elf_object_p (bfd *abfd) |
| 5829 | { |
| 5830 | static unsigned int cur_arch = 0; |
| 5831 | |
| 5832 | if (E_N1_ARCH != (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH)) |
| 5833 | { |
| 5834 | /* E_N1_ARCH is a wild card, so it is set only when no others exist. */ |
| 5835 | cur_arch = (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH); |
| 5836 | } |
| 5837 | |
| 5838 | switch (cur_arch) |
| 5839 | { |
| 5840 | default: |
| 5841 | case E_N1_ARCH: |
| 5842 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1); |
| 5843 | break; |
| 5844 | case E_N1H_ARCH: |
| 5845 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h); |
| 5846 | break; |
| 5847 | case E_NDS_ARCH_STAR_V2_0: |
| 5848 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v2); |
| 5849 | break; |
| 5850 | case E_NDS_ARCH_STAR_V3_0: |
| 5851 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3); |
| 5852 | break; |
| 5853 | case E_NDS_ARCH_STAR_V3_M: |
| 5854 | bfd_default_set_arch_mach (abfd, bfd_arch_nds32, bfd_mach_n1h_v3m); |
| 5855 | break; |
| 5856 | } |
| 5857 | |
| 5858 | return TRUE; |
| 5859 | } |
| 5860 | |
| 5861 | /* Store the machine number in the flags field. */ |
| 5862 | |
| 5863 | static void |
| 5864 | nds32_elf_final_write_processing (bfd *abfd, |
| 5865 | bfd_boolean linker ATTRIBUTE_UNUSED) |
| 5866 | { |
| 5867 | unsigned long val; |
| 5868 | static unsigned int cur_mach = 0; |
| 5869 | |
| 5870 | if (bfd_mach_n1 != bfd_get_mach (abfd)) |
| 5871 | { |
| 5872 | cur_mach = bfd_get_mach (abfd); |
| 5873 | } |
| 5874 | |
| 5875 | switch (cur_mach) |
| 5876 | { |
| 5877 | case bfd_mach_n1: |
| 5878 | /* Only happen when object is empty, since the case is abandon. */ |
| 5879 | val = E_N1_ARCH; |
| 5880 | val |= E_NDS_ABI_AABI; |
| 5881 | val |= E_NDS32_ELF_VER_1_4; |
| 5882 | break; |
| 5883 | case bfd_mach_n1h: |
| 5884 | val = E_N1H_ARCH; |
| 5885 | break; |
| 5886 | case bfd_mach_n1h_v2: |
| 5887 | val = E_NDS_ARCH_STAR_V2_0; |
| 5888 | break; |
| 5889 | case bfd_mach_n1h_v3: |
| 5890 | val = E_NDS_ARCH_STAR_V3_0; |
| 5891 | break; |
| 5892 | case bfd_mach_n1h_v3m: |
| 5893 | val = E_NDS_ARCH_STAR_V3_M; |
| 5894 | break; |
| 5895 | default: |
| 5896 | val = 0; |
| 5897 | break; |
| 5898 | } |
| 5899 | |
| 5900 | elf_elfheader (abfd)->e_flags &= ~EF_NDS_ARCH; |
| 5901 | elf_elfheader (abfd)->e_flags |= val; |
| 5902 | } |
| 5903 | |
| 5904 | /* Function to keep NDS32 specific file flags. */ |
| 5905 | |
| 5906 | static bfd_boolean |
| 5907 | nds32_elf_set_private_flags (bfd *abfd, flagword flags) |
| 5908 | { |
| 5909 | BFD_ASSERT (!elf_flags_init (abfd) |
| 5910 | || elf_elfheader (abfd)->e_flags == flags); |
| 5911 | |
| 5912 | elf_elfheader (abfd)->e_flags = flags; |
| 5913 | elf_flags_init (abfd) = TRUE; |
| 5914 | return TRUE; |
| 5915 | } |
| 5916 | |
| 5917 | static unsigned int |
| 5918 | convert_e_flags (unsigned int e_flags, unsigned int arch) |
| 5919 | { |
| 5920 | if ((e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9) |
| 5921 | { |
| 5922 | /* From 0.9 to 1.0. */ |
| 5923 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V1_0; |
| 5924 | |
| 5925 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ |
| 5926 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; |
| 5927 | if (arch == E_NDS_ARCH_STAR_V1_0) |
| 5928 | { |
| 5929 | /* Done. */ |
| 5930 | return e_flags; |
| 5931 | } |
| 5932 | } |
| 5933 | |
| 5934 | /* From 1.0 to 2.0. */ |
| 5935 | e_flags = (e_flags & (~EF_NDS_ARCH)) | E_NDS_ARCH_STAR_V2_0; |
| 5936 | |
| 5937 | /* Clear E_NDS32_HAS_MFUSR_PC_INST. */ |
| 5938 | e_flags &= ~E_NDS32_HAS_MFUSR_PC_INST; |
| 5939 | |
| 5940 | /* Invert E_NDS32_HAS_NO_MAC_INST. */ |
| 5941 | e_flags ^= E_NDS32_HAS_NO_MAC_INST; |
| 5942 | return e_flags; |
| 5943 | } |
| 5944 | |
| 5945 | static bfd_boolean |
| 5946 | nds32_check_vec_size (bfd *ibfd) |
| 5947 | { |
| 5948 | static unsigned int nds32_vec_size = 0; |
| 5949 | |
| 5950 | asection *sec_t = NULL; |
| 5951 | bfd_byte *contents = NULL; |
| 5952 | |
| 5953 | sec_t = bfd_get_section_by_name (ibfd, ".nds32_e_flags"); |
| 5954 | |
| 5955 | if (sec_t && sec_t->size >= 4) |
| 5956 | { |
| 5957 | /* Get vec_size in file. */ |
| 5958 | unsigned int flag_t; |
| 5959 | |
| 5960 | nds32_get_section_contents (ibfd, sec_t, &contents, TRUE); |
| 5961 | flag_t = bfd_get_32 (ibfd, contents); |
| 5962 | |
| 5963 | /* The value could only be 4 or 16. */ |
| 5964 | |
| 5965 | if (!nds32_vec_size) |
| 5966 | /* Set if not set yet. */ |
| 5967 | nds32_vec_size = (flag_t & 0x3); |
| 5968 | else if (nds32_vec_size != (flag_t & 0x3)) |
| 5969 | { |
| 5970 | (*_bfd_error_handler) (_("%B: ISR vector size mismatch" |
| 5971 | " with previous modules, previous %u-byte, current %u-byte"), |
| 5972 | ibfd, |
| 5973 | nds32_vec_size == 1 ? 4 : nds32_vec_size == 2 ? 16 : 0xffffffff, |
| 5974 | (flag_t & 0x3) == 1 ? 4 : (flag_t & 0x3) == 2 ? 16 : 0xffffffff); |
| 5975 | return FALSE; |
| 5976 | } |
| 5977 | else |
| 5978 | /* Only keep the first vec_size section. */ |
| 5979 | sec_t->flags |= SEC_EXCLUDE; |
| 5980 | } |
| 5981 | |
| 5982 | return TRUE; |
| 5983 | } |
| 5984 | |
| 5985 | /* Merge backend specific data from an object file to the output |
| 5986 | object file when linking. */ |
| 5987 | |
| 5988 | static bfd_boolean |
| 5989 | nds32_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 5990 | { |
| 5991 | flagword out_flags; |
| 5992 | flagword in_flags; |
| 5993 | flagword out_16regs; |
| 5994 | flagword in_no_mac; |
| 5995 | flagword out_no_mac; |
| 5996 | flagword in_16regs; |
| 5997 | flagword out_version; |
| 5998 | flagword in_version; |
| 5999 | flagword out_fpu_config; |
| 6000 | flagword in_fpu_config; |
| 6001 | |
| 6002 | /* TODO: Revise to use object-attributes instead. */ |
| 6003 | if (!nds32_check_vec_size (ibfd)) |
| 6004 | return FALSE; |
| 6005 | |
| 6006 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 6007 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 6008 | return TRUE; |
| 6009 | |
| 6010 | if (bfd_little_endian (ibfd) != bfd_little_endian (obfd)) |
| 6011 | { |
| 6012 | (*_bfd_error_handler) |
| 6013 | (_("%B: warning: Endian mismatch with previous modules."), ibfd); |
| 6014 | |
| 6015 | bfd_set_error (bfd_error_bad_value); |
| 6016 | return FALSE; |
| 6017 | } |
| 6018 | |
| 6019 | in_version = elf_elfheader (ibfd)->e_flags & EF_NDS32_ELF_VERSION; |
| 6020 | if (in_version == E_NDS32_ELF_VER_1_2) |
| 6021 | { |
| 6022 | (*_bfd_error_handler) |
| 6023 | (_("%B: warning: Older version of object file encountered, " |
| 6024 | "Please recompile with current tool chain."), ibfd); |
| 6025 | } |
| 6026 | |
| 6027 | /* We may need to merge V1 and V2 arch object files to V2. */ |
| 6028 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) |
| 6029 | != (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) |
| 6030 | { |
| 6031 | /* Need to convert version. */ |
| 6032 | if ((elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) |
| 6033 | == E_NDS_ARCH_STAR_RESERVED) |
| 6034 | { |
| 6035 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 6036 | } |
| 6037 | else if ((elf_elfheader (obfd)->e_flags & EF_NDS_ARCH) == E_NDS_ARCH_STAR_V0_9 |
| 6038 | || (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH) |
| 6039 | > (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)) |
| 6040 | { |
| 6041 | elf_elfheader (obfd)->e_flags = |
| 6042 | convert_e_flags (elf_elfheader (obfd)->e_flags, |
| 6043 | (elf_elfheader (ibfd)->e_flags & EF_NDS_ARCH)); |
| 6044 | } |
| 6045 | else |
| 6046 | { |
| 6047 | elf_elfheader (ibfd)->e_flags = |
| 6048 | convert_e_flags (elf_elfheader (ibfd)->e_flags, |
| 6049 | (elf_elfheader (obfd)->e_flags & EF_NDS_ARCH)); |
| 6050 | } |
| 6051 | } |
| 6052 | |
| 6053 | /* Extract some flags. */ |
| 6054 | in_flags = elf_elfheader (ibfd)->e_flags |
| 6055 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION |
| 6056 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); |
| 6057 | |
| 6058 | /* The following flags need special treatment. */ |
| 6059 | in_16regs = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; |
| 6060 | in_no_mac = elf_elfheader (ibfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; |
| 6061 | in_fpu_config = elf_elfheader (ibfd)->e_flags & E_NDS32_FPU_REG_CONF; |
| 6062 | |
| 6063 | /* Extract some flags. */ |
| 6064 | out_flags = elf_elfheader (obfd)->e_flags |
| 6065 | & (~(E_NDS32_HAS_REDUCED_REGS | EF_NDS32_ELF_VERSION |
| 6066 | | E_NDS32_HAS_NO_MAC_INST | E_NDS32_FPU_REG_CONF)); |
| 6067 | |
| 6068 | /* The following flags need special treatment. */ |
| 6069 | out_16regs = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_REDUCED_REGS; |
| 6070 | out_no_mac = elf_elfheader (obfd)->e_flags & E_NDS32_HAS_NO_MAC_INST; |
| 6071 | out_fpu_config = elf_elfheader (obfd)->e_flags & E_NDS32_FPU_REG_CONF; |
| 6072 | out_version = elf_elfheader (obfd)->e_flags & EF_NDS32_ELF_VERSION; |
| 6073 | if (!elf_flags_init (obfd)) |
| 6074 | { |
| 6075 | /* If the input is the default architecture then do not |
| 6076 | bother setting the flags for the output architecture, |
| 6077 | instead allow future merges to do this. If no future |
| 6078 | merges ever set these flags then they will retain their |
| 6079 | unitialised values, which surprise surprise, correspond |
| 6080 | to the default values. */ |
| 6081 | if (bfd_get_arch_info (ibfd)->the_default) |
| 6082 | return TRUE; |
| 6083 | |
| 6084 | elf_flags_init (obfd) = TRUE; |
| 6085 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; |
| 6086 | |
| 6087 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 6088 | && bfd_get_arch_info (obfd)->the_default) |
| 6089 | { |
| 6090 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| 6091 | bfd_get_mach (ibfd)); |
| 6092 | } |
| 6093 | |
| 6094 | return TRUE; |
| 6095 | } |
| 6096 | |
| 6097 | /* Check flag compatibility. */ |
| 6098 | if ((in_flags & EF_NDS_ABI) != (out_flags & EF_NDS_ABI)) |
| 6099 | { |
| 6100 | (*_bfd_error_handler) |
| 6101 | (_("%B: error: ABI mismatch with previous modules."), ibfd); |
| 6102 | |
| 6103 | bfd_set_error (bfd_error_bad_value); |
| 6104 | return FALSE; |
| 6105 | } |
| 6106 | |
| 6107 | if ((in_flags & EF_NDS_ARCH) != (out_flags & EF_NDS_ARCH)) |
| 6108 | { |
| 6109 | if (((in_flags & EF_NDS_ARCH) != E_N1_ARCH)) |
| 6110 | { |
| 6111 | (*_bfd_error_handler) |
| 6112 | (_("%B: error: Instruction set mismatch with previous modules."), ibfd); |
| 6113 | |
| 6114 | bfd_set_error (bfd_error_bad_value); |
| 6115 | return FALSE; |
| 6116 | } |
| 6117 | } |
| 6118 | |
| 6119 | /* When linking with V1.2 and V1.3 objects together the output is V1.2. |
| 6120 | and perf ext1 and DIV are mergerd to perf ext1. */ |
| 6121 | if (in_version == E_NDS32_ELF_VER_1_2 || out_version == E_NDS32_ELF_VER_1_2) |
| 6122 | { |
| 6123 | elf_elfheader (obfd)->e_flags = |
| 6124 | (in_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) |
| 6125 | | (out_flags & (~(E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) |
| 6126 | | (((in_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) |
| 6127 | ? E_NDS32_HAS_EXT_INST : 0) |
| 6128 | | (((out_flags & (E_NDS32_HAS_EXT_INST | E_NDS32_HAS_DIV_INST))) |
| 6129 | ? E_NDS32_HAS_EXT_INST : 0) |
| 6130 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) |
| 6131 | | ((in_version > out_version) ? out_version : in_version); |
| 6132 | } |
| 6133 | else |
| 6134 | { |
| 6135 | if (in_version != out_version) |
| 6136 | (*_bfd_error_handler) (_("%B: warning: Incompatible elf-versions %s and %s."), |
| 6137 | ibfd, nds32_elfver_strtab[out_version], |
| 6138 | nds32_elfver_strtab[in_version]); |
| 6139 | |
| 6140 | elf_elfheader (obfd)->e_flags = in_flags | out_flags |
| 6141 | | (in_16regs & out_16regs) | (in_no_mac & out_no_mac) |
| 6142 | | (in_fpu_config > out_fpu_config ? in_fpu_config : out_fpu_config) |
| 6143 | | (in_version > out_version ? out_version : in_version); |
| 6144 | } |
| 6145 | |
| 6146 | return TRUE; |
| 6147 | } |
| 6148 | |
| 6149 | /* Display the flags field. */ |
| 6150 | |
| 6151 | static bfd_boolean |
| 6152 | nds32_elf_print_private_bfd_data (bfd *abfd, void *ptr) |
| 6153 | { |
| 6154 | FILE *file = (FILE *) ptr; |
| 6155 | |
| 6156 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 6157 | |
| 6158 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 6159 | |
| 6160 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); |
| 6161 | |
| 6162 | switch (elf_elfheader (abfd)->e_flags & EF_NDS_ARCH) |
| 6163 | { |
| 6164 | default: |
| 6165 | case E_N1_ARCH: |
| 6166 | fprintf (file, _(": n1 instructions")); |
| 6167 | break; |
| 6168 | case E_N1H_ARCH: |
| 6169 | fprintf (file, _(": n1h instructions")); |
| 6170 | break; |
| 6171 | } |
| 6172 | |
| 6173 | fputc ('\n', file); |
| 6174 | |
| 6175 | return TRUE; |
| 6176 | } |
| 6177 | |
| 6178 | static unsigned int |
| 6179 | nds32_elf_action_discarded (asection *sec) |
| 6180 | { |
| 6181 | |
| 6182 | if (strncmp |
| 6183 | (".gcc_except_table", sec->name, sizeof (".gcc_except_table") - 1) == 0) |
| 6184 | return 0; |
| 6185 | |
| 6186 | return _bfd_elf_default_action_discarded (sec); |
| 6187 | } |
| 6188 | |
| 6189 | static asection * |
| 6190 | nds32_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info, |
| 6191 | Elf_Internal_Rela *rel, struct elf_link_hash_entry *h, |
| 6192 | Elf_Internal_Sym *sym) |
| 6193 | { |
| 6194 | if (h != NULL) |
| 6195 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6196 | { |
| 6197 | case R_NDS32_GNU_VTINHERIT: |
| 6198 | case R_NDS32_GNU_VTENTRY: |
| 6199 | case R_NDS32_RELA_GNU_VTINHERIT: |
| 6200 | case R_NDS32_RELA_GNU_VTENTRY: |
| 6201 | return NULL; |
| 6202 | } |
| 6203 | |
| 6204 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 6205 | } |
| 6206 | |
| 6207 | static bfd_boolean |
| 6208 | nds32_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, asection *sec, |
| 6209 | const Elf_Internal_Rela *relocs) |
| 6210 | { |
| 6211 | /* Update the got entry reference counts for the section being removed. */ |
| 6212 | Elf_Internal_Shdr *symtab_hdr; |
| 6213 | struct elf_link_hash_entry **sym_hashes; |
| 6214 | bfd_signed_vma *local_got_refcounts; |
| 6215 | const Elf_Internal_Rela *rel, *relend; |
| 6216 | |
| 6217 | elf_section_data (sec)->local_dynrel = NULL; |
| 6218 | |
| 6219 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 6220 | sym_hashes = elf_sym_hashes (abfd); |
| 6221 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 6222 | |
| 6223 | relend = relocs + sec->reloc_count; |
| 6224 | for (rel = relocs; rel < relend; rel++) |
| 6225 | { |
| 6226 | unsigned long r_symndx; |
| 6227 | struct elf_link_hash_entry *h = NULL; |
| 6228 | |
| 6229 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 6230 | if (r_symndx >= symtab_hdr->sh_info) |
| 6231 | { |
| 6232 | /* External symbol. */ |
| 6233 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 6234 | while (h->root.type == bfd_link_hash_indirect |
| 6235 | || h->root.type == bfd_link_hash_warning) |
| 6236 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 6237 | } |
| 6238 | |
| 6239 | switch (ELF32_R_TYPE (rel->r_info)) |
| 6240 | { |
| 6241 | case R_NDS32_GOT_HI20: |
| 6242 | case R_NDS32_GOT_LO12: |
| 6243 | case R_NDS32_GOT_LO15: |
| 6244 | case R_NDS32_GOT_LO19: |
| 6245 | case R_NDS32_GOT17S2_RELA: |
| 6246 | case R_NDS32_GOT15S2_RELA: |
| 6247 | case R_NDS32_GOTOFF: |
| 6248 | case R_NDS32_GOTOFF_HI20: |
| 6249 | case R_NDS32_GOTOFF_LO12: |
| 6250 | case R_NDS32_GOTOFF_LO15: |
| 6251 | case R_NDS32_GOTOFF_LO19: |
| 6252 | case R_NDS32_GOT20: |
| 6253 | case R_NDS32_GOTPC_HI20: |
| 6254 | case R_NDS32_GOTPC_LO12: |
| 6255 | case R_NDS32_GOTPC20: |
| 6256 | if (h != NULL) |
| 6257 | { |
| 6258 | if (h->got.refcount > 0) |
| 6259 | h->got.refcount--; |
| 6260 | } |
| 6261 | else |
| 6262 | { |
| 6263 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) |
| 6264 | local_got_refcounts[r_symndx]--; |
| 6265 | } |
| 6266 | break; |
| 6267 | |
| 6268 | case R_NDS32_16_RELA: |
| 6269 | case R_NDS32_20_RELA: |
| 6270 | case R_NDS32_5_RELA: |
| 6271 | case R_NDS32_32_RELA: |
| 6272 | case R_NDS32_HI20_RELA: |
| 6273 | case R_NDS32_LO12S3_RELA: |
| 6274 | case R_NDS32_LO12S2_RELA: |
| 6275 | case R_NDS32_LO12S2_DP_RELA: |
| 6276 | case R_NDS32_LO12S2_SP_RELA: |
| 6277 | case R_NDS32_LO12S1_RELA: |
| 6278 | case R_NDS32_LO12S0_RELA: |
| 6279 | case R_NDS32_LO12S0_ORI_RELA: |
| 6280 | case R_NDS32_SDA16S3_RELA: |
| 6281 | case R_NDS32_SDA17S2_RELA: |
| 6282 | case R_NDS32_SDA18S1_RELA: |
| 6283 | case R_NDS32_SDA19S0_RELA: |
| 6284 | case R_NDS32_SDA15S3_RELA: |
| 6285 | case R_NDS32_SDA15S2_RELA: |
| 6286 | case R_NDS32_SDA12S2_DP_RELA: |
| 6287 | case R_NDS32_SDA12S2_SP_RELA: |
| 6288 | case R_NDS32_SDA15S1_RELA: |
| 6289 | case R_NDS32_SDA15S0_RELA: |
| 6290 | case R_NDS32_SDA_FP7U2_RELA: |
| 6291 | case R_NDS32_15_PCREL_RELA: |
| 6292 | case R_NDS32_17_PCREL_RELA: |
| 6293 | case R_NDS32_25_PCREL_RELA: |
| 6294 | if (h != NULL) |
| 6295 | { |
| 6296 | struct elf_nds32_link_hash_entry *eh; |
| 6297 | struct elf_nds32_dyn_relocs **pp; |
| 6298 | struct elf_nds32_dyn_relocs *p; |
| 6299 | |
| 6300 | if (!bfd_link_pic (info) && h->plt.refcount > 0) |
| 6301 | h->plt.refcount -= 1; |
| 6302 | |
| 6303 | eh = (struct elf_nds32_link_hash_entry *) h; |
| 6304 | |
| 6305 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
| 6306 | if (p->sec == sec) |
| 6307 | { |
| 6308 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA |
| 6309 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA |
| 6310 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA) |
| 6311 | p->pc_count -= 1; |
| 6312 | p->count -= 1; |
| 6313 | if (p->count == 0) |
| 6314 | *pp = p->next; |
| 6315 | break; |
| 6316 | } |
| 6317 | } |
| 6318 | break; |
| 6319 | |
| 6320 | case R_NDS32_9_PLTREL: |
| 6321 | case R_NDS32_25_PLTREL: |
| 6322 | if (h != NULL) |
| 6323 | { |
| 6324 | if (h->plt.refcount > 0) |
| 6325 | h->plt.refcount--; |
| 6326 | } |
| 6327 | break; |
| 6328 | |
| 6329 | default: |
| 6330 | break; |
| 6331 | } |
| 6332 | } |
| 6333 | |
| 6334 | return TRUE; |
| 6335 | } |
| 6336 | |
| 6337 | /* Look through the relocs for a section during the first phase. |
| 6338 | Since we don't do .gots or .plts, we just need to consider the |
| 6339 | virtual table relocs for gc. */ |
| 6340 | |
| 6341 | static bfd_boolean |
| 6342 | nds32_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 6343 | asection *sec, const Elf_Internal_Rela *relocs) |
| 6344 | { |
| 6345 | Elf_Internal_Shdr *symtab_hdr; |
| 6346 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; |
| 6347 | const Elf_Internal_Rela *rel; |
| 6348 | const Elf_Internal_Rela *rel_end; |
| 6349 | struct elf_nds32_link_hash_table *htab; |
| 6350 | bfd *dynobj; |
| 6351 | asection *sreloc = NULL; |
| 6352 | |
| 6353 | if (bfd_link_relocatable (info)) |
| 6354 | return TRUE; |
| 6355 | |
| 6356 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 6357 | sym_hashes = elf_sym_hashes (abfd); |
| 6358 | sym_hashes_end = |
| 6359 | sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym); |
| 6360 | if (!elf_bad_symtab (abfd)) |
| 6361 | sym_hashes_end -= symtab_hdr->sh_info; |
| 6362 | |
| 6363 | htab = nds32_elf_hash_table (info); |
| 6364 | dynobj = htab->root.dynobj; |
| 6365 | |
| 6366 | rel_end = relocs + sec->reloc_count; |
| 6367 | for (rel = relocs; rel < rel_end; rel++) |
| 6368 | { |
| 6369 | enum elf_nds32_reloc_type r_type; |
| 6370 | struct elf_link_hash_entry *h; |
| 6371 | unsigned long r_symndx; |
| 6372 | int tls_type, old_tls_type; |
| 6373 | |
| 6374 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 6375 | r_type = ELF32_R_TYPE (rel->r_info); |
| 6376 | if (r_symndx < symtab_hdr->sh_info) |
| 6377 | h = NULL; |
| 6378 | else |
| 6379 | { |
| 6380 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 6381 | while (h->root.type == bfd_link_hash_indirect |
| 6382 | || h->root.type == bfd_link_hash_warning) |
| 6383 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 6384 | } |
| 6385 | |
| 6386 | /* Some relocs require a global offset table. We create |
| 6387 | got section here, since these relocation need got section |
| 6388 | and it is not created yet. */ |
| 6389 | if (htab->sgot == NULL) |
| 6390 | { |
| 6391 | switch (r_type) |
| 6392 | { |
| 6393 | case R_NDS32_GOT_HI20: |
| 6394 | case R_NDS32_GOT_LO12: |
| 6395 | case R_NDS32_GOT_LO15: |
| 6396 | case R_NDS32_GOT_LO19: |
| 6397 | case R_NDS32_GOT17S2_RELA: |
| 6398 | case R_NDS32_GOT15S2_RELA: |
| 6399 | case R_NDS32_GOTOFF: |
| 6400 | case R_NDS32_GOTOFF_HI20: |
| 6401 | case R_NDS32_GOTOFF_LO12: |
| 6402 | case R_NDS32_GOTOFF_LO15: |
| 6403 | case R_NDS32_GOTOFF_LO19: |
| 6404 | case R_NDS32_GOTPC20: |
| 6405 | case R_NDS32_GOTPC_HI20: |
| 6406 | case R_NDS32_GOTPC_LO12: |
| 6407 | case R_NDS32_GOT20: |
| 6408 | case R_NDS32_TLS_IE_HI20: |
| 6409 | case R_NDS32_TLS_IE_LO12S2: |
| 6410 | if (dynobj == NULL) |
| 6411 | htab->root.dynobj = dynobj = abfd; |
| 6412 | if (!create_got_section (dynobj, info)) |
| 6413 | return FALSE; |
| 6414 | break; |
| 6415 | |
| 6416 | default: |
| 6417 | break; |
| 6418 | } |
| 6419 | } |
| 6420 | |
| 6421 | switch ((int) r_type) |
| 6422 | { |
| 6423 | case R_NDS32_GOT_HI20: |
| 6424 | case R_NDS32_GOT_LO12: |
| 6425 | case R_NDS32_GOT_LO15: |
| 6426 | case R_NDS32_GOT_LO19: |
| 6427 | case R_NDS32_GOT20: |
| 6428 | case R_NDS32_TLS_IE_HI20: |
| 6429 | case R_NDS32_TLS_IE_LO12S2: |
| 6430 | switch (r_type) |
| 6431 | { |
| 6432 | case R_NDS32_TLS_IE_HI20: |
| 6433 | case R_NDS32_TLS_IE_LO12S2: |
| 6434 | tls_type = GOT_TLS_IE; |
| 6435 | break; |
| 6436 | default: |
| 6437 | tls_type = GOT_NORMAL; |
| 6438 | break; |
| 6439 | } |
| 6440 | if (h != NULL) |
| 6441 | { |
| 6442 | old_tls_type = elf32_nds32_hash_entry (h)->tls_type; |
| 6443 | h->got.refcount += 1; |
| 6444 | } |
| 6445 | else |
| 6446 | { |
| 6447 | bfd_signed_vma *local_got_refcounts; |
| 6448 | |
| 6449 | /* This is a global offset table entry for a local |
| 6450 | symbol. */ |
| 6451 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 6452 | if (local_got_refcounts == NULL) |
| 6453 | { |
| 6454 | bfd_size_type size; |
| 6455 | |
| 6456 | size = symtab_hdr->sh_info; |
| 6457 | size *= sizeof (bfd_signed_vma); |
| 6458 | local_got_refcounts = (bfd_signed_vma *) bfd_zalloc (abfd, size); |
| 6459 | if (local_got_refcounts == NULL) |
| 6460 | return FALSE; |
| 6461 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 6462 | } |
| 6463 | local_got_refcounts[r_symndx] += 1; |
| 6464 | old_tls_type = elf32_nds32_local_got_tls_type (abfd)[r_symndx]; |
| 6465 | } |
| 6466 | |
| 6467 | /* We will already have issued an error message if there |
| 6468 | is a TLS/non-TLS mismatch, based on the symbol |
| 6469 | type. So just combine any TLS types needed. */ |
| 6470 | if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL |
| 6471 | && tls_type != GOT_NORMAL) |
| 6472 | tls_type |= old_tls_type; |
| 6473 | |
| 6474 | if (old_tls_type != tls_type) |
| 6475 | { |
| 6476 | if (h != NULL) |
| 6477 | elf32_nds32_hash_entry (h)->tls_type = tls_type; |
| 6478 | else |
| 6479 | elf32_nds32_local_got_tls_type (abfd)[r_symndx] = tls_type; |
| 6480 | } |
| 6481 | break; |
| 6482 | case R_NDS32_9_PLTREL: |
| 6483 | case R_NDS32_25_PLTREL: |
| 6484 | case R_NDS32_PLTREL_HI20: |
| 6485 | case R_NDS32_PLTREL_LO12: |
| 6486 | case R_NDS32_PLT_GOTREL_HI20: |
| 6487 | case R_NDS32_PLT_GOTREL_LO12: |
| 6488 | case R_NDS32_PLT_GOTREL_LO15: |
| 6489 | case R_NDS32_PLT_GOTREL_LO19: |
| 6490 | case R_NDS32_PLT_GOTREL_LO20: |
| 6491 | |
| 6492 | /* This symbol requires a procedure linkage table entry. We |
| 6493 | actually build the entry in adjust_dynamic_symbol, |
| 6494 | because this might be a case of linking PIC code without |
| 6495 | linking in any dynamic objects, in which case we don't |
| 6496 | need to generate a procedure linkage table after all. */ |
| 6497 | |
| 6498 | /* If this is a local symbol, we resolve it directly without |
| 6499 | creating a procedure linkage table entry. */ |
| 6500 | if (h == NULL) |
| 6501 | continue; |
| 6502 | |
| 6503 | if (h->forced_local) |
| 6504 | break; |
| 6505 | |
| 6506 | elf32_nds32_hash_entry (h)->tls_type = GOT_NORMAL; |
| 6507 | h->needs_plt = 1; |
| 6508 | h->plt.refcount += 1; |
| 6509 | break; |
| 6510 | |
| 6511 | case R_NDS32_16_RELA: |
| 6512 | case R_NDS32_20_RELA: |
| 6513 | case R_NDS32_5_RELA: |
| 6514 | case R_NDS32_32_RELA: |
| 6515 | case R_NDS32_HI20_RELA: |
| 6516 | case R_NDS32_LO12S3_RELA: |
| 6517 | case R_NDS32_LO12S2_RELA: |
| 6518 | case R_NDS32_LO12S2_DP_RELA: |
| 6519 | case R_NDS32_LO12S2_SP_RELA: |
| 6520 | case R_NDS32_LO12S1_RELA: |
| 6521 | case R_NDS32_LO12S0_RELA: |
| 6522 | case R_NDS32_LO12S0_ORI_RELA: |
| 6523 | case R_NDS32_SDA16S3_RELA: |
| 6524 | case R_NDS32_SDA17S2_RELA: |
| 6525 | case R_NDS32_SDA18S1_RELA: |
| 6526 | case R_NDS32_SDA19S0_RELA: |
| 6527 | case R_NDS32_SDA15S3_RELA: |
| 6528 | case R_NDS32_SDA15S2_RELA: |
| 6529 | case R_NDS32_SDA12S2_DP_RELA: |
| 6530 | case R_NDS32_SDA12S2_SP_RELA: |
| 6531 | case R_NDS32_SDA15S1_RELA: |
| 6532 | case R_NDS32_SDA15S0_RELA: |
| 6533 | case R_NDS32_SDA_FP7U2_RELA: |
| 6534 | case R_NDS32_15_PCREL_RELA: |
| 6535 | case R_NDS32_17_PCREL_RELA: |
| 6536 | case R_NDS32_25_PCREL_RELA: |
| 6537 | |
| 6538 | if (h != NULL && !bfd_link_pic (info)) |
| 6539 | { |
| 6540 | h->non_got_ref = 1; |
| 6541 | h->plt.refcount += 1; |
| 6542 | } |
| 6543 | |
| 6544 | /* If we are creating a shared library, and this is a reloc against |
| 6545 | a global symbol, or a non PC relative reloc against a local |
| 6546 | symbol, then we need to copy the reloc into the shared library. |
| 6547 | However, if we are linking with -Bsymbolic, we do not need to |
| 6548 | copy a reloc against a global symbol which is defined in an |
| 6549 | object we are including in the link (i.e., DEF_REGULAR is set). |
| 6550 | At this point we have not seen all the input files, so it is |
| 6551 | possible that DEF_REGULAR is not set now but will be set later |
| 6552 | (it is never cleared). We account for that possibility below by |
| 6553 | storing information in the dyn_relocs field of the hash table |
| 6554 | entry. A similar situation occurs when creating shared libraries |
| 6555 | and symbol visibility changes render the symbol local. |
| 6556 | |
| 6557 | If on the other hand, we are creating an executable, we may need |
| 6558 | to keep relocations for symbols satisfied by a dynamic library |
| 6559 | if we manage to avoid copy relocs for the symbol. */ |
| 6560 | if ((bfd_link_pic (info) |
| 6561 | && (sec->flags & SEC_ALLOC) != 0 |
| 6562 | && ((r_type != R_NDS32_25_PCREL_RELA |
| 6563 | && r_type != R_NDS32_15_PCREL_RELA |
| 6564 | && r_type != R_NDS32_17_PCREL_RELA |
| 6565 | && !(r_type == R_NDS32_32_RELA |
| 6566 | && strcmp (sec->name, ".eh_frame") == 0)) |
| 6567 | || (h != NULL |
| 6568 | && (!info->symbolic |
| 6569 | || h->root.type == bfd_link_hash_defweak |
| 6570 | || !h->def_regular)))) |
| 6571 | || (!bfd_link_pic (info) |
| 6572 | && (sec->flags & SEC_ALLOC) != 0 |
| 6573 | && h != NULL |
| 6574 | && (h->root.type == bfd_link_hash_defweak |
| 6575 | || !h->def_regular))) |
| 6576 | { |
| 6577 | struct elf_nds32_dyn_relocs *p; |
| 6578 | struct elf_nds32_dyn_relocs **head; |
| 6579 | |
| 6580 | if (dynobj == NULL) |
| 6581 | htab->root.dynobj = dynobj = abfd; |
| 6582 | |
| 6583 | /* When creating a shared object, we must copy these |
| 6584 | relocs into the output file. We create a reloc |
| 6585 | section in dynobj and make room for the reloc. */ |
| 6586 | if (sreloc == NULL) |
| 6587 | { |
| 6588 | const char *name; |
| 6589 | |
| 6590 | name = bfd_elf_string_from_elf_section |
| 6591 | (abfd, elf_elfheader (abfd)->e_shstrndx, |
| 6592 | elf_section_data (sec)->rela.hdr->sh_name); |
| 6593 | if (name == NULL) |
| 6594 | return FALSE; |
| 6595 | |
| 6596 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 6597 | && strcmp (bfd_get_section_name (abfd, sec), |
| 6598 | name + 5) == 0); |
| 6599 | |
| 6600 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 6601 | if (sreloc == NULL) |
| 6602 | { |
| 6603 | flagword flags; |
| 6604 | |
| 6605 | sreloc = bfd_make_section (dynobj, name); |
| 6606 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 6607 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 6608 | if ((sec->flags & SEC_ALLOC) != 0) |
| 6609 | flags |= SEC_ALLOC | SEC_LOAD; |
| 6610 | if (sreloc == NULL |
| 6611 | || !bfd_set_section_flags (dynobj, sreloc, flags) |
| 6612 | || !bfd_set_section_alignment (dynobj, sreloc, 2)) |
| 6613 | return FALSE; |
| 6614 | |
| 6615 | elf_section_type (sreloc) = SHT_RELA; |
| 6616 | } |
| 6617 | elf_section_data (sec)->sreloc = sreloc; |
| 6618 | } |
| 6619 | |
| 6620 | /* If this is a global symbol, we count the number of |
| 6621 | relocations we need for this symbol. */ |
| 6622 | if (h != NULL) |
| 6623 | head = &((struct elf_nds32_link_hash_entry *) h)->dyn_relocs; |
| 6624 | else |
| 6625 | { |
| 6626 | asection *s; |
| 6627 | |
| 6628 | Elf_Internal_Sym *isym; |
| 6629 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, abfd, r_symndx); |
| 6630 | if (isym == NULL) |
| 6631 | return FALSE; |
| 6632 | |
| 6633 | /* Track dynamic relocs needed for local syms too. */ |
| 6634 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 6635 | if (s == NULL) |
| 6636 | return FALSE; |
| 6637 | |
| 6638 | head = ((struct elf_nds32_dyn_relocs **) |
| 6639 | &elf_section_data (s)->local_dynrel); |
| 6640 | } |
| 6641 | |
| 6642 | p = *head; |
| 6643 | if (p == NULL || p->sec != sec) |
| 6644 | { |
| 6645 | bfd_size_type amt = sizeof (*p); |
| 6646 | p = (struct elf_nds32_dyn_relocs *) bfd_alloc (dynobj, amt); |
| 6647 | if (p == NULL) |
| 6648 | return FALSE; |
| 6649 | p->next = *head; |
| 6650 | *head = p; |
| 6651 | p->sec = sec; |
| 6652 | p->count = 0; |
| 6653 | p->pc_count = 0; |
| 6654 | } |
| 6655 | |
| 6656 | p->count += 1; |
| 6657 | if (ELF32_R_TYPE (rel->r_info) == R_NDS32_25_PCREL_RELA |
| 6658 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_15_PCREL_RELA |
| 6659 | || ELF32_R_TYPE (rel->r_info) == R_NDS32_17_PCREL_RELA) |
| 6660 | p->pc_count += 1; |
| 6661 | } |
| 6662 | break; |
| 6663 | |
| 6664 | /* This relocation describes the C++ object vtable hierarchy. |
| 6665 | Reconstruct it for later use during GC. */ |
| 6666 | case R_NDS32_RELA_GNU_VTINHERIT: |
| 6667 | case R_NDS32_GNU_VTINHERIT: |
| 6668 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 6669 | return FALSE; |
| 6670 | break; |
| 6671 | |
| 6672 | /* This relocation describes which C++ vtable entries are actually |
| 6673 | used. Record for later use during GC. */ |
| 6674 | case R_NDS32_GNU_VTENTRY: |
| 6675 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
| 6676 | return FALSE; |
| 6677 | break; |
| 6678 | case R_NDS32_RELA_GNU_VTENTRY: |
| 6679 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 6680 | return FALSE; |
| 6681 | break; |
| 6682 | } |
| 6683 | } |
| 6684 | |
| 6685 | return TRUE; |
| 6686 | } |
| 6687 | |
| 6688 | /* Write VAL in uleb128 format to P, returning a pointer to the |
| 6689 | following byte. |
| 6690 | This code is copied from elf-attr.c. */ |
| 6691 | |
| 6692 | static bfd_byte * |
| 6693 | write_uleb128 (bfd_byte *p, unsigned int val) |
| 6694 | { |
| 6695 | bfd_byte c; |
| 6696 | do |
| 6697 | { |
| 6698 | c = val & 0x7f; |
| 6699 | val >>= 7; |
| 6700 | if (val) |
| 6701 | c |= 0x80; |
| 6702 | *(p++) = c; |
| 6703 | } |
| 6704 | while (val); |
| 6705 | return p; |
| 6706 | } |
| 6707 | |
| 6708 | static bfd_signed_vma |
| 6709 | calculate_offset (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 6710 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr, |
| 6711 | int *pic_ext_target) |
| 6712 | { |
| 6713 | bfd_signed_vma foff; |
| 6714 | bfd_vma symval, addend; |
| 6715 | asection *sym_sec; |
| 6716 | |
| 6717 | /* Get the value of the symbol referred to by the reloc. */ |
| 6718 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 6719 | { |
| 6720 | Elf_Internal_Sym *isym; |
| 6721 | |
| 6722 | /* A local symbol. */ |
| 6723 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
| 6724 | |
| 6725 | if (isym->st_shndx == SHN_UNDEF) |
| 6726 | sym_sec = bfd_und_section_ptr; |
| 6727 | else if (isym->st_shndx == SHN_ABS) |
| 6728 | sym_sec = bfd_abs_section_ptr; |
| 6729 | else if (isym->st_shndx == SHN_COMMON) |
| 6730 | sym_sec = bfd_com_section_ptr; |
| 6731 | else |
| 6732 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 6733 | symval = isym->st_value + sym_sec->output_section->vma |
| 6734 | + sym_sec->output_offset; |
| 6735 | } |
| 6736 | else |
| 6737 | { |
| 6738 | unsigned long indx; |
| 6739 | struct elf_link_hash_entry *h; |
| 6740 | bfd *owner; |
| 6741 | |
| 6742 | /* An external symbol. */ |
| 6743 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 6744 | h = elf_sym_hashes (abfd)[indx]; |
| 6745 | BFD_ASSERT (h != NULL); |
| 6746 | |
| 6747 | if (h->root.type != bfd_link_hash_defined |
| 6748 | && h->root.type != bfd_link_hash_defweak) |
| 6749 | /* This appears to be a reference to an undefined |
| 6750 | symbol. Just ignore it--it will be caught by the |
| 6751 | regular reloc processing. */ |
| 6752 | return 0; |
| 6753 | owner = h->root.u.def.section->owner; |
| 6754 | if (owner && (elf_elfheader (owner)->e_flags & E_NDS32_HAS_PIC)) |
| 6755 | *pic_ext_target = 1; |
| 6756 | |
| 6757 | if (h->root.u.def.section->flags & SEC_MERGE) |
| 6758 | { |
| 6759 | sym_sec = h->root.u.def.section; |
| 6760 | symval = _bfd_merged_section_offset (abfd, &sym_sec, |
| 6761 | elf_section_data (sym_sec)->sec_info, |
| 6762 | h->root.u.def.value); |
| 6763 | symval = symval + sym_sec->output_section->vma |
| 6764 | + sym_sec->output_offset; |
| 6765 | } |
| 6766 | else |
| 6767 | symval = (h->root.u.def.value |
| 6768 | + h->root.u.def.section->output_section->vma |
| 6769 | + h->root.u.def.section->output_offset); |
| 6770 | } |
| 6771 | |
| 6772 | addend = irel->r_addend; |
| 6773 | |
| 6774 | foff = (symval + addend |
| 6775 | - (irel->r_offset + sec->output_section->vma + sec->output_offset)); |
| 6776 | return foff; |
| 6777 | } |
| 6778 | |
| 6779 | static bfd_vma |
| 6780 | calculate_plt_memory_address (bfd *abfd, struct bfd_link_info *link_info, |
| 6781 | Elf_Internal_Sym *isymbuf, |
| 6782 | Elf_Internal_Rela *irel, |
| 6783 | Elf_Internal_Shdr *symtab_hdr) |
| 6784 | { |
| 6785 | bfd_vma symval; |
| 6786 | |
| 6787 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 6788 | { |
| 6789 | Elf_Internal_Sym *isym; |
| 6790 | asection *sym_sec; |
| 6791 | /* A local symbol. */ |
| 6792 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
| 6793 | |
| 6794 | if (isym->st_shndx == SHN_UNDEF) |
| 6795 | sym_sec = bfd_und_section_ptr; |
| 6796 | else if (isym->st_shndx == SHN_ABS) |
| 6797 | sym_sec = bfd_abs_section_ptr; |
| 6798 | else if (isym->st_shndx == SHN_COMMON) |
| 6799 | sym_sec = bfd_com_section_ptr; |
| 6800 | else |
| 6801 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 6802 | symval = isym->st_value + sym_sec->output_section->vma |
| 6803 | + sym_sec->output_offset; |
| 6804 | } |
| 6805 | else |
| 6806 | { |
| 6807 | unsigned long indx; |
| 6808 | struct elf_link_hash_entry *h; |
| 6809 | struct elf_nds32_link_hash_table *htab; |
| 6810 | asection *splt; |
| 6811 | |
| 6812 | /* An external symbol. */ |
| 6813 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 6814 | h = elf_sym_hashes (abfd)[indx]; |
| 6815 | BFD_ASSERT (h != NULL); |
| 6816 | htab = nds32_elf_hash_table (link_info); |
| 6817 | splt = htab->splt; |
| 6818 | |
| 6819 | while (h->root.type == bfd_link_hash_indirect |
| 6820 | || h->root.type == bfd_link_hash_warning) |
| 6821 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 6822 | |
| 6823 | if (h->plt.offset == (bfd_vma) - 1) |
| 6824 | { |
| 6825 | if (h->root.type != bfd_link_hash_defined |
| 6826 | && h->root.type != bfd_link_hash_defweak) |
| 6827 | /* This appears to be a reference to an undefined |
| 6828 | * symbol. Just ignore it--it will be caught by the |
| 6829 | * regular reloc processing. */ |
| 6830 | return 0; |
| 6831 | symval = (h->root.u.def.value |
| 6832 | + h->root.u.def.section->output_section->vma |
| 6833 | + h->root.u.def.section->output_offset); |
| 6834 | } |
| 6835 | else |
| 6836 | symval = splt->output_section->vma + h->plt.offset; |
| 6837 | } |
| 6838 | |
| 6839 | return symval; |
| 6840 | } |
| 6841 | |
| 6842 | static bfd_signed_vma |
| 6843 | calculate_plt_offset (bfd *abfd, asection *sec, struct bfd_link_info *link_info, |
| 6844 | Elf_Internal_Sym *isymbuf, Elf_Internal_Rela *irel, |
| 6845 | Elf_Internal_Shdr *symtab_hdr) |
| 6846 | { |
| 6847 | bfd_vma foff; |
| 6848 | if ((foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, |
| 6849 | symtab_hdr)) == 0) |
| 6850 | return 0; |
| 6851 | else |
| 6852 | return foff - (irel->r_offset |
| 6853 | + sec->output_section->vma + sec->output_offset); |
| 6854 | } |
| 6855 | \f |
| 6856 | /* Convert a 32-bit instruction to 16-bit one. |
| 6857 | INSN is the input 32-bit instruction, INSN16 is the output 16-bit |
| 6858 | instruction. If INSN_TYPE is not NULL, it the CGEN instruction |
| 6859 | type of INSN16. Return 1 if successful. */ |
| 6860 | |
| 6861 | static int |
| 6862 | nds32_convert_32_to_16_alu1 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, |
| 6863 | int *pinsn_type) |
| 6864 | { |
| 6865 | uint16_t insn16 = 0; |
| 6866 | int insn_type = 0; |
| 6867 | unsigned long mach = bfd_get_mach (abfd); |
| 6868 | |
| 6869 | if (N32_SH5 (insn) != 0) |
| 6870 | return 0; |
| 6871 | |
| 6872 | switch (N32_SUB5 (insn)) |
| 6873 | { |
| 6874 | case N32_ALU1_ADD_SLLI: |
| 6875 | case N32_ALU1_ADD_SRLI: |
| 6876 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) |
| 6877 | { |
| 6878 | insn16 = N16_TYPE333 (ADD333, N32_RT5 (insn), N32_RA5 (insn), |
| 6879 | N32_RB5 (insn)); |
| 6880 | insn_type = NDS32_INSN_ADD333; |
| 6881 | } |
| 6882 | else if (N32_IS_RT4 (insn)) |
| 6883 | { |
| 6884 | if (N32_RT5 (insn) == N32_RA5 (insn)) |
| 6885 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RB5 (insn)); |
| 6886 | else if (N32_RT5 (insn) == N32_RB5 (insn)) |
| 6887 | insn16 = N16_TYPE45 (ADD45, N32_RT54 (insn), N32_RA5 (insn)); |
| 6888 | insn_type = NDS32_INSN_ADD45; |
| 6889 | } |
| 6890 | break; |
| 6891 | |
| 6892 | case N32_ALU1_SUB_SLLI: |
| 6893 | case N32_ALU1_SUB_SRLI: |
| 6894 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IS_RB3 (insn)) |
| 6895 | { |
| 6896 | insn16 = N16_TYPE333 (SUB333, N32_RT5 (insn), N32_RA5 (insn), |
| 6897 | N32_RB5 (insn)); |
| 6898 | insn_type = NDS32_INSN_SUB333; |
| 6899 | } |
| 6900 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) |
| 6901 | { |
| 6902 | insn16 = N16_TYPE45 (SUB45, N32_RT54 (insn), N32_RB5 (insn)); |
| 6903 | insn_type = NDS32_INSN_SUB45; |
| 6904 | } |
| 6905 | break; |
| 6906 | |
| 6907 | case N32_ALU1_AND_SLLI: |
| 6908 | case N32_ALU1_AND_SRLI: |
| 6909 | /* and $rt, $rt, $rb -> and33 for v3, v3m. */ |
| 6910 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 6911 | && N32_IS_RB3 (insn)) |
| 6912 | { |
| 6913 | if (N32_RT5 (insn) == N32_RA5 (insn)) |
| 6914 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RB5 (insn)); |
| 6915 | else if (N32_RT5 (insn) == N32_RB5 (insn)) |
| 6916 | insn16 = N16_MISC33 (AND33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6917 | if (insn16) |
| 6918 | insn_type = NDS32_INSN_AND33; |
| 6919 | } |
| 6920 | break; |
| 6921 | |
| 6922 | case N32_ALU1_XOR_SLLI: |
| 6923 | case N32_ALU1_XOR_SRLI: |
| 6924 | /* xor $rt, $rt, $rb -> xor33 for v3, v3m. */ |
| 6925 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 6926 | && N32_IS_RB3 (insn)) |
| 6927 | { |
| 6928 | if (N32_RT5 (insn) == N32_RA5 (insn)) |
| 6929 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RB5 (insn)); |
| 6930 | else if (N32_RT5 (insn) == N32_RB5 (insn)) |
| 6931 | insn16 = N16_MISC33 (XOR33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6932 | if (insn16) |
| 6933 | insn_type = NDS32_INSN_XOR33; |
| 6934 | } |
| 6935 | break; |
| 6936 | |
| 6937 | case N32_ALU1_OR_SLLI: |
| 6938 | case N32_ALU1_OR_SRLI: |
| 6939 | /* or $rt, $rt, $rb -> or33 for v3, v3m. */ |
| 6940 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 6941 | && N32_IS_RB3 (insn)) |
| 6942 | { |
| 6943 | if (N32_RT5 (insn) == N32_RA5 (insn)) |
| 6944 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RB5 (insn)); |
| 6945 | else if (N32_RT5 (insn) == N32_RB5 (insn)) |
| 6946 | insn16 = N16_MISC33 (OR33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6947 | if (insn16) |
| 6948 | insn_type = NDS32_INSN_OR33; |
| 6949 | } |
| 6950 | break; |
| 6951 | case N32_ALU1_NOR: |
| 6952 | /* nor $rt, $ra, $ra -> not33 for v3, v3m. */ |
| 6953 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RB3 (insn) |
| 6954 | && N32_RA5 (insn) == N32_RB5 (insn)) |
| 6955 | { |
| 6956 | insn16 = N16_MISC33 (NOT33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6957 | insn_type = NDS32_INSN_NOT33; |
| 6958 | } |
| 6959 | break; |
| 6960 | case N32_ALU1_SRAI: |
| 6961 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) |
| 6962 | { |
| 6963 | insn16 = N16_TYPE45 (SRAI45, N32_RT54 (insn), N32_UB5 (insn)); |
| 6964 | insn_type = NDS32_INSN_SRAI45; |
| 6965 | } |
| 6966 | break; |
| 6967 | |
| 6968 | case N32_ALU1_SRLI: |
| 6969 | if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn)) |
| 6970 | { |
| 6971 | insn16 = N16_TYPE45 (SRLI45, N32_RT54 (insn), N32_UB5 (insn)); |
| 6972 | insn_type = NDS32_INSN_SRLI45; |
| 6973 | } |
| 6974 | break; |
| 6975 | |
| 6976 | case N32_ALU1_SLLI: |
| 6977 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_UB5 (insn) < 8) |
| 6978 | { |
| 6979 | insn16 = N16_TYPE333 (SLLI333, N32_RT5 (insn), N32_RA5 (insn), |
| 6980 | N32_UB5 (insn)); |
| 6981 | insn_type = NDS32_INSN_SLLI333; |
| 6982 | } |
| 6983 | break; |
| 6984 | |
| 6985 | case N32_ALU1_ZEH: |
| 6986 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) |
| 6987 | { |
| 6988 | insn16 = N16_BFMI333 (ZEH33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6989 | insn_type = NDS32_INSN_ZEH33; |
| 6990 | } |
| 6991 | break; |
| 6992 | |
| 6993 | case N32_ALU1_SEB: |
| 6994 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) |
| 6995 | { |
| 6996 | insn16 = N16_BFMI333 (SEB33, N32_RT5 (insn), N32_RA5 (insn)); |
| 6997 | insn_type = NDS32_INSN_SEB33; |
| 6998 | } |
| 6999 | break; |
| 7000 | |
| 7001 | case N32_ALU1_SEH: |
| 7002 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) |
| 7003 | { |
| 7004 | insn16 = N16_BFMI333 (SEH33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7005 | insn_type = NDS32_INSN_SEH33; |
| 7006 | } |
| 7007 | break; |
| 7008 | |
| 7009 | case N32_ALU1_SLT: |
| 7010 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) |
| 7011 | { |
| 7012 | /* Implicit r15. */ |
| 7013 | insn16 = N16_TYPE45 (SLT45, N32_RA54 (insn), N32_RB5 (insn)); |
| 7014 | insn_type = NDS32_INSN_SLT45; |
| 7015 | } |
| 7016 | break; |
| 7017 | |
| 7018 | case N32_ALU1_SLTS: |
| 7019 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn)) |
| 7020 | { |
| 7021 | /* Implicit r15. */ |
| 7022 | insn16 = N16_TYPE45 (SLTS45, N32_RA54 (insn), N32_RB5 (insn)); |
| 7023 | insn_type = NDS32_INSN_SLTS45; |
| 7024 | } |
| 7025 | break; |
| 7026 | } |
| 7027 | |
| 7028 | if ((insn16 & 0x8000) == 0) |
| 7029 | return 0; |
| 7030 | |
| 7031 | if (pinsn16) |
| 7032 | *pinsn16 = insn16; |
| 7033 | if (pinsn_type) |
| 7034 | *pinsn_type = insn_type; |
| 7035 | return 1; |
| 7036 | } |
| 7037 | |
| 7038 | static int |
| 7039 | nds32_convert_32_to_16_alu2 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, |
| 7040 | int *pinsn_type) |
| 7041 | { |
| 7042 | uint16_t insn16 = 0; |
| 7043 | int insn_type; |
| 7044 | unsigned long mach = bfd_get_mach (abfd); |
| 7045 | |
| 7046 | /* TODO: bset, bclr, btgl, btst. */ |
| 7047 | if (__GF (insn, 6, 4) != 0) |
| 7048 | return 0; |
| 7049 | |
| 7050 | switch (N32_IMMU (insn, 6)) |
| 7051 | { |
| 7052 | case N32_ALU2_MUL: |
| 7053 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7054 | && N32_IS_RB3 (insn)) |
| 7055 | { |
| 7056 | if (N32_RT5 (insn) == N32_RA5 (insn)) |
| 7057 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RB5 (insn)); |
| 7058 | else if (N32_RT5 (insn) == N32_RB5 (insn)) |
| 7059 | insn16 = N16_MISC33 (MUL33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7060 | if (insn16) |
| 7061 | insn_type = NDS32_INSN_MUL33; |
| 7062 | } |
| 7063 | } |
| 7064 | |
| 7065 | if ((insn16 & 0x8000) == 0) |
| 7066 | return 0; |
| 7067 | |
| 7068 | if (pinsn16) |
| 7069 | *pinsn16 = insn16; |
| 7070 | if (pinsn_type) |
| 7071 | *pinsn_type = insn_type; |
| 7072 | return 1; |
| 7073 | } |
| 7074 | |
| 7075 | int |
| 7076 | nds32_convert_32_to_16 (bfd *abfd, uint32_t insn, uint16_t *pinsn16, |
| 7077 | int *pinsn_type) |
| 7078 | { |
| 7079 | int op6; |
| 7080 | uint16_t insn16 = 0; |
| 7081 | int insn_type; |
| 7082 | unsigned long mach = bfd_get_mach (abfd); |
| 7083 | |
| 7084 | /* Decode 32-bit instruction. */ |
| 7085 | if (insn & 0x80000000) |
| 7086 | { |
| 7087 | /* Not 32-bit insn. */ |
| 7088 | return 0; |
| 7089 | } |
| 7090 | |
| 7091 | op6 = N32_OP6 (insn); |
| 7092 | |
| 7093 | /* Convert it to 16-bit instruction. */ |
| 7094 | switch (op6) |
| 7095 | { |
| 7096 | case N32_OP6_MOVI: |
| 7097 | if (IS_WITHIN_S (N32_IMM20S (insn), 5)) |
| 7098 | { |
| 7099 | insn16 = N16_TYPE55 (MOVI55, N32_RT5 (insn), N32_IMM20S (insn)); |
| 7100 | insn_type = NDS32_INSN_MOVI55; |
| 7101 | } |
| 7102 | else if (mach >= MACH_V3 && N32_IMM20S (insn) >= 16 |
| 7103 | && N32_IMM20S (insn) < 48 && N32_IS_RT4 (insn)) |
| 7104 | { |
| 7105 | insn16 = N16_TYPE45 (MOVPI45, N32_RT54 (insn), |
| 7106 | N32_IMM20S (insn) - 16); |
| 7107 | insn_type = NDS32_INSN_MOVPI45; |
| 7108 | } |
| 7109 | break; |
| 7110 | |
| 7111 | case N32_OP6_ADDI: |
| 7112 | if (N32_IMM15S (insn) == 0) |
| 7113 | { |
| 7114 | /* Do not convert `addi $sp, $sp, 0' to `mov55 $sp, $sp', |
| 7115 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ |
| 7116 | if (mach <= MACH_V2 |
| 7117 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) |
| 7118 | { |
| 7119 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); |
| 7120 | insn_type = NDS32_INSN_MOV55; |
| 7121 | } |
| 7122 | } |
| 7123 | else if (N32_IMM15S (insn) > 0) |
| 7124 | { |
| 7125 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) < 8) |
| 7126 | { |
| 7127 | insn16 = N16_TYPE333 (ADDI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7128 | N32_IMM15S (insn)); |
| 7129 | insn_type = NDS32_INSN_ADDI333; |
| 7130 | } |
| 7131 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) |
| 7132 | && N32_IMM15S (insn) < 32) |
| 7133 | { |
| 7134 | insn16 = N16_TYPE45 (ADDI45, N32_RT54 (insn), N32_IMM15S (insn)); |
| 7135 | insn_type = NDS32_INSN_ADDI45; |
| 7136 | } |
| 7137 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP |
| 7138 | && N32_RT5 (insn) == N32_RA5 (insn) |
| 7139 | && N32_IMM15S (insn) < 512) |
| 7140 | { |
| 7141 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); |
| 7142 | insn_type = NDS32_INSN_ADDI10_SP; |
| 7143 | } |
| 7144 | else if (mach >= MACH_V3 && N32_IS_RT3 (insn) |
| 7145 | && N32_RA5 (insn) == REG_SP && N32_IMM15S (insn) < 256 |
| 7146 | && (N32_IMM15S (insn) % 4 == 0)) |
| 7147 | { |
| 7148 | insn16 = N16_TYPE36 (ADDRI36_SP, N32_RT5 (insn), |
| 7149 | N32_IMM15S (insn) >> 2); |
| 7150 | insn_type = NDS32_INSN_ADDRI36_SP; |
| 7151 | } |
| 7152 | } |
| 7153 | else |
| 7154 | { |
| 7155 | /* Less than 0. */ |
| 7156 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) && N32_IMM15S (insn) > -8) |
| 7157 | { |
| 7158 | insn16 = N16_TYPE333 (SUBI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7159 | 0 - N32_IMM15S (insn)); |
| 7160 | insn_type = NDS32_INSN_SUBI333; |
| 7161 | } |
| 7162 | else if (N32_IS_RT4 (insn) && N32_RT5 (insn) == N32_RA5 (insn) |
| 7163 | && N32_IMM15S (insn) > -32) |
| 7164 | { |
| 7165 | insn16 = N16_TYPE45 (SUBI45, N32_RT54 (insn), |
| 7166 | 0 - N32_IMM15S (insn)); |
| 7167 | insn_type = NDS32_INSN_SUBI45; |
| 7168 | } |
| 7169 | else if (mach >= MACH_V2 && N32_RT5 (insn) == REG_SP |
| 7170 | && N32_RT5 (insn) == N32_RA5 (insn) |
| 7171 | && N32_IMM15S (insn) >= -512) |
| 7172 | { |
| 7173 | insn16 = N16_TYPE10 (ADDI10S, N32_IMM15S (insn)); |
| 7174 | insn_type = NDS32_INSN_ADDI10_SP; |
| 7175 | } |
| 7176 | } |
| 7177 | break; |
| 7178 | |
| 7179 | case N32_OP6_ORI: |
| 7180 | if (N32_IMM15S (insn) == 0) |
| 7181 | { |
| 7182 | /* Do not convert `ori $sp, $sp, 0' to `mov55 $sp, $sp', |
| 7183 | because `mov55 $sp, $sp' is ifret16 in V3 ISA. */ |
| 7184 | if (mach <= MACH_V2 |
| 7185 | || N32_RT5 (insn) != REG_SP || N32_RA5 (insn) != REG_SP) |
| 7186 | { |
| 7187 | insn16 = N16_TYPE55 (MOV55, N32_RT5 (insn), N32_RA5 (insn)); |
| 7188 | insn_type = NDS32_INSN_MOV55; |
| 7189 | } |
| 7190 | } |
| 7191 | break; |
| 7192 | |
| 7193 | case N32_OP6_SUBRI: |
| 7194 | if (mach >= MACH_V3 && N32_IS_RT3 (insn) |
| 7195 | && N32_IS_RA3 (insn) && N32_IMM15S (insn) == 0) |
| 7196 | { |
| 7197 | insn16 = N16_MISC33 (NEG33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7198 | insn_type = NDS32_INSN_NEG33; |
| 7199 | } |
| 7200 | break; |
| 7201 | |
| 7202 | case N32_OP6_ANDI: |
| 7203 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn)) |
| 7204 | { |
| 7205 | if (N32_IMM15U (insn) == 1) |
| 7206 | { |
| 7207 | insn16 = N16_BFMI333 (XLSB33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7208 | insn_type = NDS32_INSN_XLSB33; |
| 7209 | } |
| 7210 | else if (N32_IMM15U (insn) == 0x7ff) |
| 7211 | { |
| 7212 | insn16 = N16_BFMI333 (X11B33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7213 | insn_type = NDS32_INSN_X11B33; |
| 7214 | } |
| 7215 | else if (N32_IMM15U (insn) == 0xff) |
| 7216 | { |
| 7217 | insn16 = N16_BFMI333 (ZEB33, N32_RT5 (insn), N32_RA5 (insn)); |
| 7218 | insn_type = NDS32_INSN_ZEB33; |
| 7219 | } |
| 7220 | else if (mach >= MACH_V3 && N32_RT5 (insn) == N32_RA5 (insn) |
| 7221 | && N32_IMM15U (insn) < 256) |
| 7222 | { |
| 7223 | int imm15u = N32_IMM15U (insn); |
| 7224 | |
| 7225 | if (__builtin_popcount (imm15u) == 1) |
| 7226 | { |
| 7227 | /* BMSKI33 */ |
| 7228 | int imm3u = __builtin_ctz (imm15u); |
| 7229 | |
| 7230 | insn16 = N16_BFMI333 (BMSKI33, N32_RT5 (insn), imm3u); |
| 7231 | insn_type = NDS32_INSN_BMSKI33; |
| 7232 | } |
| 7233 | else if (imm15u != 0 && __builtin_popcount (imm15u + 1) == 1) |
| 7234 | { |
| 7235 | /* FEXTI33 */ |
| 7236 | int imm3u = __builtin_ctz (imm15u + 1) - 1; |
| 7237 | |
| 7238 | insn16 = N16_BFMI333 (FEXTI33, N32_RT5 (insn), imm3u); |
| 7239 | insn_type = NDS32_INSN_FEXTI33; |
| 7240 | } |
| 7241 | } |
| 7242 | } |
| 7243 | break; |
| 7244 | |
| 7245 | case N32_OP6_SLTI: |
| 7246 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) |
| 7247 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) |
| 7248 | { |
| 7249 | insn16 = N16_TYPE45 (SLTI45, N32_RA54 (insn), N32_IMM15S (insn)); |
| 7250 | insn_type = NDS32_INSN_SLTI45; |
| 7251 | } |
| 7252 | break; |
| 7253 | |
| 7254 | case N32_OP6_SLTSI: |
| 7255 | if (N32_RT5 (insn) == REG_R15 && N32_IS_RA4 (insn) |
| 7256 | && IS_WITHIN_U (N32_IMM15S (insn), 5)) |
| 7257 | { |
| 7258 | insn16 = N16_TYPE45 (SLTSI45, N32_RA54 (insn), N32_IMM15S (insn)); |
| 7259 | insn_type = NDS32_INSN_SLTSI45; |
| 7260 | } |
| 7261 | break; |
| 7262 | |
| 7263 | case N32_OP6_LWI: |
| 7264 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) |
| 7265 | { |
| 7266 | insn16 = N16_TYPE45 (LWI450, N32_RT54 (insn), N32_RA5 (insn)); |
| 7267 | insn_type = NDS32_INSN_LWI450; |
| 7268 | } |
| 7269 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7270 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7271 | { |
| 7272 | insn16 = N16_TYPE333 (LWI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7273 | N32_IMM15S (insn)); |
| 7274 | insn_type = NDS32_INSN_LWI333; |
| 7275 | } |
| 7276 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP |
| 7277 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7278 | { |
| 7279 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); |
| 7280 | insn_type = NDS32_INSN_LWI37; |
| 7281 | } |
| 7282 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP |
| 7283 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7284 | { |
| 7285 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 0, N32_IMM15S (insn)); |
| 7286 | insn_type = NDS32_INSN_LWI37_SP; |
| 7287 | } |
| 7288 | else if (mach >= MACH_V2 && N32_IS_RT4 (insn) && N32_RA5 (insn) == REG_R8 |
| 7289 | && -32 <= N32_IMM15S (insn) && N32_IMM15S (insn) < 0) |
| 7290 | { |
| 7291 | insn16 = N16_TYPE45 (LWI45_FE, N32_RT54 (insn), |
| 7292 | N32_IMM15S (insn) + 32); |
| 7293 | insn_type = NDS32_INSN_LWI45_FE; |
| 7294 | } |
| 7295 | break; |
| 7296 | |
| 7297 | case N32_OP6_SWI: |
| 7298 | if (N32_IS_RT4 (insn) && N32_IMM15S (insn) == 0) |
| 7299 | { |
| 7300 | insn16 = N16_TYPE45 (SWI450, N32_RT54 (insn), N32_RA5 (insn)); |
| 7301 | insn_type = NDS32_INSN_SWI450; |
| 7302 | } |
| 7303 | else if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7304 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7305 | { |
| 7306 | insn16 = N16_TYPE333 (SWI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7307 | N32_IMM15S (insn)); |
| 7308 | insn_type = NDS32_INSN_SWI333; |
| 7309 | } |
| 7310 | else if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_FP |
| 7311 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7312 | { |
| 7313 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); |
| 7314 | insn_type = NDS32_INSN_SWI37; |
| 7315 | } |
| 7316 | else if (mach >= MACH_V2 && N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_SP |
| 7317 | && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7318 | { |
| 7319 | insn16 = N16_TYPE37 (XWI37SP, N32_RT5 (insn), 1, N32_IMM15S (insn)); |
| 7320 | insn_type = NDS32_INSN_SWI37_SP; |
| 7321 | } |
| 7322 | break; |
| 7323 | |
| 7324 | case N32_OP6_LWI_BI: |
| 7325 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7326 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7327 | { |
| 7328 | insn16 = N16_TYPE333 (LWI333_BI, N32_RT5 (insn), N32_RA5 (insn), |
| 7329 | N32_IMM15S (insn)); |
| 7330 | insn_type = NDS32_INSN_LWI333_BI; |
| 7331 | } |
| 7332 | break; |
| 7333 | |
| 7334 | case N32_OP6_SWI_BI: |
| 7335 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7336 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7337 | { |
| 7338 | insn16 = N16_TYPE333 (SWI333_BI, N32_RT5 (insn), N32_RA5 (insn), |
| 7339 | N32_IMM15S (insn)); |
| 7340 | insn_type = NDS32_INSN_SWI333_BI; |
| 7341 | } |
| 7342 | break; |
| 7343 | |
| 7344 | case N32_OP6_LHI: |
| 7345 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7346 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7347 | { |
| 7348 | insn16 = N16_TYPE333 (LHI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7349 | N32_IMM15S (insn)); |
| 7350 | insn_type = NDS32_INSN_LHI333; |
| 7351 | } |
| 7352 | break; |
| 7353 | |
| 7354 | case N32_OP6_SHI: |
| 7355 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7356 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7357 | { |
| 7358 | insn16 = N16_TYPE333 (SHI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7359 | N32_IMM15S (insn)); |
| 7360 | insn_type = NDS32_INSN_SHI333; |
| 7361 | } |
| 7362 | break; |
| 7363 | |
| 7364 | case N32_OP6_LBI: |
| 7365 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7366 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7367 | { |
| 7368 | insn16 = N16_TYPE333 (LBI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7369 | N32_IMM15S (insn)); |
| 7370 | insn_type = NDS32_INSN_LBI333; |
| 7371 | } |
| 7372 | break; |
| 7373 | |
| 7374 | case N32_OP6_SBI: |
| 7375 | if (N32_IS_RT3 (insn) && N32_IS_RA3 (insn) |
| 7376 | && IS_WITHIN_U (N32_IMM15S (insn), 3)) |
| 7377 | { |
| 7378 | insn16 = N16_TYPE333 (SBI333, N32_RT5 (insn), N32_RA5 (insn), |
| 7379 | N32_IMM15S (insn)); |
| 7380 | insn_type = NDS32_INSN_SBI333; |
| 7381 | } |
| 7382 | break; |
| 7383 | |
| 7384 | case N32_OP6_ALU1: |
| 7385 | return nds32_convert_32_to_16_alu1 (abfd, insn, pinsn16, pinsn_type); |
| 7386 | |
| 7387 | case N32_OP6_ALU2: |
| 7388 | return nds32_convert_32_to_16_alu2 (abfd, insn, pinsn16, pinsn_type); |
| 7389 | |
| 7390 | case N32_OP6_BR1: |
| 7391 | if (!IS_WITHIN_S (N32_IMM14S (insn), 8)) |
| 7392 | goto done; |
| 7393 | |
| 7394 | if ((insn & __BIT (14)) == 0) |
| 7395 | { |
| 7396 | /* N32_BR1_BEQ */ |
| 7397 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 |
| 7398 | && N32_RT5 (insn) != REG_R5) |
| 7399 | insn16 = N16_TYPE38 (BEQS38, N32_RT5 (insn), N32_IMM14S (insn)); |
| 7400 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 |
| 7401 | && N32_RA5 (insn) != REG_R5) |
| 7402 | insn16 = N16_TYPE38 (BEQS38, N32_RA5 (insn), N32_IMM14S (insn)); |
| 7403 | insn_type = NDS32_INSN_BEQS38; |
| 7404 | break; |
| 7405 | } |
| 7406 | else |
| 7407 | { |
| 7408 | /* N32_BR1_BNE */ |
| 7409 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5 |
| 7410 | && N32_RT5 (insn) != REG_R5) |
| 7411 | insn16 = N16_TYPE38 (BNES38, N32_RT5 (insn), N32_IMM14S (insn)); |
| 7412 | else if (N32_IS_RA3 (insn) && N32_RT5 (insn) == REG_R5 |
| 7413 | && N32_RA5 (insn) != REG_R5) |
| 7414 | insn16 = N16_TYPE38 (BNES38, N32_RA5 (insn), N32_IMM14S (insn)); |
| 7415 | insn_type = NDS32_INSN_BNES38; |
| 7416 | break; |
| 7417 | } |
| 7418 | break; |
| 7419 | |
| 7420 | case N32_OP6_BR2: |
| 7421 | switch (N32_BR2_SUB (insn)) |
| 7422 | { |
| 7423 | case N32_BR2_BEQZ: |
| 7424 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) |
| 7425 | { |
| 7426 | insn16 = N16_TYPE38 (BEQZ38, N32_RT5 (insn), N32_IMM16S (insn)); |
| 7427 | insn_type = NDS32_INSN_BEQZ38; |
| 7428 | } |
| 7429 | else if (N32_RT5 (insn) == REG_R15 |
| 7430 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) |
| 7431 | { |
| 7432 | insn16 = N16_TYPE8 (BEQZS8, N32_IMM16S (insn)); |
| 7433 | insn_type = NDS32_INSN_BEQZS8; |
| 7434 | } |
| 7435 | break; |
| 7436 | |
| 7437 | case N32_BR2_BNEZ: |
| 7438 | if (N32_IS_RT3 (insn) && IS_WITHIN_S (N32_IMM16S (insn), 8)) |
| 7439 | { |
| 7440 | insn16 = N16_TYPE38 (BNEZ38, N32_RT5 (insn), N32_IMM16S (insn)); |
| 7441 | insn_type = NDS32_INSN_BNEZ38; |
| 7442 | } |
| 7443 | else if (N32_RT5 (insn) == REG_R15 |
| 7444 | && IS_WITHIN_S (N32_IMM16S (insn), 8)) |
| 7445 | { |
| 7446 | insn16 = N16_TYPE8 (BNEZS8, N32_IMM16S (insn)); |
| 7447 | insn_type = NDS32_INSN_BNEZS8; |
| 7448 | } |
| 7449 | break; |
| 7450 | |
| 7451 | case N32_BR2_IFCALL: |
| 7452 | if (IS_WITHIN_U (N32_IMM16S (insn), 9)) |
| 7453 | { |
| 7454 | insn16 = N16_TYPE9 (IFCALL9, N32_IMM16S (insn)); |
| 7455 | insn_type = NDS32_INSN_IFCALL9; |
| 7456 | } |
| 7457 | break; |
| 7458 | } |
| 7459 | break; |
| 7460 | |
| 7461 | case N32_OP6_JI: |
| 7462 | if ((insn & __BIT (24)) == 0) |
| 7463 | { |
| 7464 | /* N32_JI_J */ |
| 7465 | if (IS_WITHIN_S (N32_IMM24S (insn), 8)) |
| 7466 | { |
| 7467 | insn16 = N16_TYPE8 (J8, N32_IMM24S (insn)); |
| 7468 | insn_type = NDS32_INSN_J8; |
| 7469 | } |
| 7470 | } |
| 7471 | break; |
| 7472 | |
| 7473 | case N32_OP6_JREG: |
| 7474 | if (__GF (insn, 8, 2) != 0) |
| 7475 | goto done; |
| 7476 | |
| 7477 | switch (N32_IMMU (insn, 5)) |
| 7478 | { |
| 7479 | case N32_JREG_JR: |
| 7480 | if (N32_JREG_HINT (insn) == 0) |
| 7481 | { |
| 7482 | /* jr */ |
| 7483 | insn16 = N16_TYPE5 (JR5, N32_RB5 (insn)); |
| 7484 | insn_type = NDS32_INSN_JR5; |
| 7485 | } |
| 7486 | else if (N32_JREG_HINT (insn) == 1) |
| 7487 | { |
| 7488 | /* ret */ |
| 7489 | insn16 = N16_TYPE5 (RET5, N32_RB5 (insn)); |
| 7490 | insn_type = NDS32_INSN_RET5; |
| 7491 | } |
| 7492 | else if (N32_JREG_HINT (insn) == 3) |
| 7493 | { |
| 7494 | /* ifret = mov55 $sp, $sp */ |
| 7495 | insn16 = N16_TYPE55 (MOV55, REG_SP, REG_SP); |
| 7496 | insn_type = NDS32_INSN_IFRET; |
| 7497 | } |
| 7498 | break; |
| 7499 | |
| 7500 | case N32_JREG_JRAL: |
| 7501 | /* It's convertible when return rt5 is $lp and address |
| 7502 | translation is kept. */ |
| 7503 | if (N32_RT5 (insn) == REG_LP && N32_JREG_HINT (insn) == 0) |
| 7504 | { |
| 7505 | insn16 = N16_TYPE5 (JRAL5, N32_RB5 (insn)); |
| 7506 | insn_type = NDS32_INSN_JRAL5; |
| 7507 | } |
| 7508 | break; |
| 7509 | } |
| 7510 | break; |
| 7511 | |
| 7512 | case N32_OP6_MISC: |
| 7513 | if (N32_SUB5 (insn) == N32_MISC_BREAK && N32_SWID (insn) < 32) |
| 7514 | { |
| 7515 | /* For v3, swid above 31 are used for ex9.it. */ |
| 7516 | insn16 = N16_TYPE5 (BREAK16, N32_SWID (insn)); |
| 7517 | insn_type = NDS32_INSN_BREAK16; |
| 7518 | } |
| 7519 | break; |
| 7520 | |
| 7521 | default: |
| 7522 | /* This instruction has no 16-bit variant. */ |
| 7523 | goto done; |
| 7524 | } |
| 7525 | |
| 7526 | done: |
| 7527 | /* Bit-15 of insn16 should be set for a valid instruction. */ |
| 7528 | if ((insn16 & 0x8000) == 0) |
| 7529 | return 0; |
| 7530 | |
| 7531 | if (pinsn16) |
| 7532 | *pinsn16 = insn16; |
| 7533 | if (pinsn_type) |
| 7534 | *pinsn_type = insn_type; |
| 7535 | return 1; |
| 7536 | } |
| 7537 | |
| 7538 | static int |
| 7539 | special_convert_32_to_16 (unsigned long insn, uint16_t *pinsn16, |
| 7540 | Elf_Internal_Rela *reloc) |
| 7541 | { |
| 7542 | uint16_t insn16 = 0; |
| 7543 | |
| 7544 | if ((reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) == 0 |
| 7545 | || (ELF32_R_TYPE (reloc->r_info) != R_NDS32_INSN16)) |
| 7546 | return 0; |
| 7547 | |
| 7548 | if (!N32_IS_RT3 (insn)) |
| 7549 | return 0; |
| 7550 | |
| 7551 | switch (N32_OP6 (insn)) |
| 7552 | { |
| 7553 | case N32_OP6_LWI: |
| 7554 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7555 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM15S (insn)); |
| 7556 | break; |
| 7557 | case N32_OP6_SWI: |
| 7558 | if (N32_RA5 (insn) == REG_GP && IS_WITHIN_U (N32_IMM15S (insn), 7)) |
| 7559 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM15S (insn)); |
| 7560 | break; |
| 7561 | case N32_OP6_HWGP: |
| 7562 | if (!IS_WITHIN_U (N32_IMM17S (insn), 7)) |
| 7563 | break; |
| 7564 | |
| 7565 | if (__GF (insn, 17, 3) == 6) |
| 7566 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 0, N32_IMM17S (insn)); |
| 7567 | else if (__GF (insn, 17, 3) == 7) |
| 7568 | insn16 = N16_TYPE37 (XWI37, N32_RT5 (insn), 1, N32_IMM17S (insn)); |
| 7569 | break; |
| 7570 | } |
| 7571 | |
| 7572 | if ((insn16 & 0x8000) == 0) |
| 7573 | return 0; |
| 7574 | |
| 7575 | *pinsn16 = insn16; |
| 7576 | return 1; |
| 7577 | } |
| 7578 | |
| 7579 | /* Convert a 16-bit instruction to 32-bit one. |
| 7580 | INSN16 it the input and PINSN it the point to output. |
| 7581 | Return non-zero on successful. Otherwise 0 is returned. */ |
| 7582 | |
| 7583 | int |
| 7584 | nds32_convert_16_to_32 (bfd *abfd, uint16_t insn16, uint32_t *pinsn) |
| 7585 | { |
| 7586 | uint32_t insn = 0xffffffff; |
| 7587 | unsigned long mach = bfd_get_mach (abfd); |
| 7588 | |
| 7589 | /* NOTE: push25, pop25 and movd44 do not have 32-bit variants. */ |
| 7590 | |
| 7591 | switch (__GF (insn16, 9, 6)) |
| 7592 | { |
| 7593 | case 0x4: /* add45 */ |
| 7594 | insn = N32_ALU1 (ADD, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7595 | N16_RA5 (insn16)); |
| 7596 | goto done; |
| 7597 | case 0x5: /* sub45 */ |
| 7598 | insn = N32_ALU1 (SUB, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7599 | N16_RA5 (insn16)); |
| 7600 | goto done; |
| 7601 | case 0x6: /* addi45 */ |
| 7602 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7603 | N16_IMM5U (insn16)); |
| 7604 | goto done; |
| 7605 | case 0x7: /* subi45 */ |
| 7606 | insn = N32_TYPE2 (ADDI, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7607 | -N16_IMM5U (insn16)); |
| 7608 | goto done; |
| 7609 | case 0x8: /* srai45 */ |
| 7610 | insn = N32_ALU1 (SRAI, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7611 | N16_IMM5U (insn16)); |
| 7612 | goto done; |
| 7613 | case 0x9: /* srli45 */ |
| 7614 | insn = N32_ALU1 (SRLI, N16_RT4 (insn16), N16_RT4 (insn16), |
| 7615 | N16_IMM5U (insn16)); |
| 7616 | goto done; |
| 7617 | case 0xa: /* slli333 */ |
| 7618 | insn = N32_ALU1 (SLLI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7619 | N16_IMM3U (insn16)); |
| 7620 | goto done; |
| 7621 | case 0xc: /* add333 */ |
| 7622 | insn = N32_ALU1 (ADD, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7623 | N16_RB3 (insn16)); |
| 7624 | goto done; |
| 7625 | case 0xd: /* sub333 */ |
| 7626 | insn = N32_ALU1 (SUB, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7627 | N16_RB3 (insn16)); |
| 7628 | goto done; |
| 7629 | case 0xe: /* addi333 */ |
| 7630 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7631 | N16_IMM3U (insn16)); |
| 7632 | goto done; |
| 7633 | case 0xf: /* subi333 */ |
| 7634 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7635 | -N16_IMM3U (insn16)); |
| 7636 | goto done; |
| 7637 | case 0x10: /* lwi333 */ |
| 7638 | insn = N32_TYPE2 (LWI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7639 | N16_IMM3U (insn16)); |
| 7640 | goto done; |
| 7641 | case 0x12: /* lhi333 */ |
| 7642 | insn = N32_TYPE2 (LHI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7643 | N16_IMM3U (insn16)); |
| 7644 | goto done; |
| 7645 | case 0x13: /* lbi333 */ |
| 7646 | insn = N32_TYPE2 (LBI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7647 | N16_IMM3U (insn16)); |
| 7648 | goto done; |
| 7649 | case 0x11: /* lwi333.bi */ |
| 7650 | insn = N32_TYPE2 (LWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7651 | N16_IMM3U (insn16)); |
| 7652 | goto done; |
| 7653 | case 0x14: /* swi333 */ |
| 7654 | insn = N32_TYPE2 (SWI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7655 | N16_IMM3U (insn16)); |
| 7656 | goto done; |
| 7657 | case 0x16: /* shi333 */ |
| 7658 | insn = N32_TYPE2 (SHI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7659 | N16_IMM3U (insn16)); |
| 7660 | goto done; |
| 7661 | case 0x17: /* sbi333 */ |
| 7662 | insn = N32_TYPE2 (SBI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7663 | N16_IMM3U (insn16)); |
| 7664 | goto done; |
| 7665 | case 0x15: /* swi333.bi */ |
| 7666 | insn = N32_TYPE2 (SWI_BI, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7667 | N16_IMM3U (insn16)); |
| 7668 | goto done; |
| 7669 | case 0x18: /* addri36.sp */ |
| 7670 | insn = N32_TYPE2 (ADDI, N16_RT3 (insn16), REG_SP, |
| 7671 | N16_IMM6U (insn16) << 2); |
| 7672 | goto done; |
| 7673 | case 0x19: /* lwi45.fe */ |
| 7674 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), REG_R8, |
| 7675 | (N16_IMM5U (insn16) - 32)); |
| 7676 | goto done; |
| 7677 | case 0x1a: /* lwi450 */ |
| 7678 | insn = N32_TYPE2 (LWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); |
| 7679 | goto done; |
| 7680 | case 0x1b: /* swi450 */ |
| 7681 | insn = N32_TYPE2 (SWI, N16_RT4 (insn16), N16_RA5 (insn16), 0); |
| 7682 | goto done; |
| 7683 | |
| 7684 | /* These are r15 implied instructions. */ |
| 7685 | case 0x30: /* slts45 */ |
| 7686 | insn = N32_ALU1 (SLTS, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); |
| 7687 | goto done; |
| 7688 | case 0x31: /* slt45 */ |
| 7689 | insn = N32_ALU1 (SLT, REG_TA, N16_RT4 (insn16), N16_RA5 (insn16)); |
| 7690 | goto done; |
| 7691 | case 0x32: /* sltsi45 */ |
| 7692 | insn = N32_TYPE2 (SLTSI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); |
| 7693 | goto done; |
| 7694 | case 0x33: /* slti45 */ |
| 7695 | insn = N32_TYPE2 (SLTI, REG_TA, N16_RT4 (insn16), N16_IMM5U (insn16)); |
| 7696 | goto done; |
| 7697 | case 0x34: /* beqzs8, bnezs8 */ |
| 7698 | if (insn16 & __BIT (8)) |
| 7699 | insn = N32_BR2 (BNEZ, REG_TA, N16_IMM8S (insn16)); |
| 7700 | else |
| 7701 | insn = N32_BR2 (BEQZ, REG_TA, N16_IMM8S (insn16)); |
| 7702 | goto done; |
| 7703 | |
| 7704 | case 0x35: /* break16, ex9.it */ |
| 7705 | /* Only consider range of v3 break16. */ |
| 7706 | insn = N32_TYPE0 (MISC, (N16_IMM5U (insn16) << 5) | N32_MISC_BREAK); |
| 7707 | goto done; |
| 7708 | |
| 7709 | case 0x3c: /* ifcall9 */ |
| 7710 | insn = N32_BR2 (IFCALL, 0, N16_IMM9U (insn16)); |
| 7711 | goto done; |
| 7712 | case 0x3d: /* movpi45 */ |
| 7713 | insn = N32_TYPE1 (MOVI, N16_RT4 (insn16), N16_IMM5U (insn16) + 16); |
| 7714 | goto done; |
| 7715 | |
| 7716 | case 0x3f: /* MISC33 */ |
| 7717 | switch (insn16 & 0x7) |
| 7718 | { |
| 7719 | case 2: /* neg33 */ |
| 7720 | insn = N32_TYPE2 (SUBRI, N16_RT3 (insn16), N16_RA3 (insn16), 0); |
| 7721 | break; |
| 7722 | case 3: /* not33 */ |
| 7723 | insn = N32_ALU1 (NOR, N16_RT3 (insn16), N16_RA3 (insn16), |
| 7724 | N16_RA3 (insn16)); |
| 7725 | break; |
| 7726 | case 4: /* mul33 */ |
| 7727 | insn = N32_ALU2 (MUL, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7728 | N16_RA3 (insn16)); |
| 7729 | break; |
| 7730 | case 5: /* xor33 */ |
| 7731 | insn = N32_ALU1 (XOR, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7732 | N16_RA3 (insn16)); |
| 7733 | break; |
| 7734 | case 6: /* and33 */ |
| 7735 | insn = N32_ALU1 (AND, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7736 | N16_RA3 (insn16)); |
| 7737 | break; |
| 7738 | case 7: /* or33 */ |
| 7739 | insn = N32_ALU1 (OR, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7740 | N16_RA3 (insn16)); |
| 7741 | break; |
| 7742 | } |
| 7743 | goto done; |
| 7744 | |
| 7745 | case 0xb: |
| 7746 | switch (insn16 & 0x7) |
| 7747 | { |
| 7748 | case 0: /* zeb33 */ |
| 7749 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0xff); |
| 7750 | break; |
| 7751 | case 1: /* zeh33 */ |
| 7752 | insn = N32_ALU1 (ZEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); |
| 7753 | break; |
| 7754 | case 2: /* seb33 */ |
| 7755 | insn = N32_ALU1 (SEB, N16_RT3 (insn16), N16_RA3 (insn16), 0); |
| 7756 | break; |
| 7757 | case 3: /* seh33 */ |
| 7758 | insn = N32_ALU1 (SEH, N16_RT3 (insn16), N16_RA3 (insn16), 0); |
| 7759 | break; |
| 7760 | case 4: /* xlsb33 */ |
| 7761 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 1); |
| 7762 | break; |
| 7763 | case 5: /* x11b33 */ |
| 7764 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RA3 (insn16), 0x7ff); |
| 7765 | break; |
| 7766 | case 6: /* bmski33 */ |
| 7767 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7768 | 1 << __GF (insn16, 3, 3)); |
| 7769 | break; |
| 7770 | case 7: /* fexti33 */ |
| 7771 | insn = N32_TYPE2 (ANDI, N16_RT3 (insn16), N16_RT3 (insn16), |
| 7772 | (1 << (__GF (insn16, 3, 3) + 1)) - 1); |
| 7773 | break; |
| 7774 | } |
| 7775 | goto done; |
| 7776 | } |
| 7777 | |
| 7778 | switch (__GF (insn16, 10, 5)) |
| 7779 | { |
| 7780 | case 0x0: /* mov55 or ifret16 */ |
| 7781 | if (mach >= MACH_V3 && N16_RT5 (insn16) == REG_SP |
| 7782 | && N16_RT5 (insn16) == N16_RA5 (insn16)) |
| 7783 | insn = N32_JREG (JR, 0, 0, 0, 3); |
| 7784 | else |
| 7785 | insn = N32_TYPE2 (ADDI, N16_RT5 (insn16), N16_RA5 (insn16), 0); |
| 7786 | goto done; |
| 7787 | case 0x1: /* movi55 */ |
| 7788 | insn = N32_TYPE1 (MOVI, N16_RT5 (insn16), N16_IMM5S (insn16)); |
| 7789 | goto done; |
| 7790 | case 0x1b: /* addi10s (V2) */ |
| 7791 | insn = N32_TYPE2 (ADDI, REG_SP, REG_SP, N16_IMM10S (insn16)); |
| 7792 | goto done; |
| 7793 | } |
| 7794 | |
| 7795 | switch (__GF (insn16, 11, 4)) |
| 7796 | { |
| 7797 | case 0x7: /* lwi37.fp/swi37.fp */ |
| 7798 | if (insn16 & __BIT (7)) /* swi37.fp */ |
| 7799 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); |
| 7800 | else /* lwi37.fp */ |
| 7801 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_FP, N16_IMM7U (insn16)); |
| 7802 | goto done; |
| 7803 | case 0x8: /* beqz38 */ |
| 7804 | insn = N32_BR2 (BEQZ, N16_RT38 (insn16), N16_IMM8S (insn16)); |
| 7805 | goto done; |
| 7806 | case 0x9: /* bnez38 */ |
| 7807 | insn = N32_BR2 (BNEZ, N16_RT38 (insn16), N16_IMM8S (insn16)); |
| 7808 | goto done; |
| 7809 | case 0xa: /* beqs38/j8, implied r5 */ |
| 7810 | if (N16_RT38 (insn16) == 5) |
| 7811 | insn = N32_JI (J, N16_IMM8S (insn16)); |
| 7812 | else |
| 7813 | insn = N32_BR1 (BEQ, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); |
| 7814 | goto done; |
| 7815 | case 0xb: /* bnes38 and others */ |
| 7816 | if (N16_RT38 (insn16) == 5) |
| 7817 | { |
| 7818 | switch (__GF (insn16, 5, 3)) |
| 7819 | { |
| 7820 | case 0: /* jr5 */ |
| 7821 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 0); |
| 7822 | break; |
| 7823 | case 4: /* ret5 */ |
| 7824 | insn = N32_JREG (JR, 0, N16_RA5 (insn16), 0, 1); |
| 7825 | break; |
| 7826 | case 1: /* jral5 */ |
| 7827 | insn = N32_JREG (JRAL, REG_LP, N16_RA5 (insn16), 0, 0); |
| 7828 | break; |
| 7829 | case 2: /* ex9.it imm5 */ |
| 7830 | /* ex9.it had no 32-bit variantl. */ |
| 7831 | break; |
| 7832 | case 5: /* add5.pc */ |
| 7833 | /* add5.pc had no 32-bit variantl. */ |
| 7834 | break; |
| 7835 | } |
| 7836 | } |
| 7837 | else /* bnes38 */ |
| 7838 | insn = N32_BR1 (BNE, N16_RT38 (insn16), REG_R5, N16_IMM8S (insn16)); |
| 7839 | goto done; |
| 7840 | case 0xe: /* lwi37/swi37 */ |
| 7841 | if (insn16 & (1 << 7)) /* swi37.sp */ |
| 7842 | insn = N32_TYPE2 (SWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); |
| 7843 | else /* lwi37.sp */ |
| 7844 | insn = N32_TYPE2 (LWI, N16_RT38 (insn16), REG_SP, N16_IMM7U (insn16)); |
| 7845 | goto done; |
| 7846 | } |
| 7847 | |
| 7848 | done: |
| 7849 | if (insn & 0x80000000) |
| 7850 | return 0; |
| 7851 | |
| 7852 | if (pinsn) |
| 7853 | *pinsn = insn; |
| 7854 | return 1; |
| 7855 | } |
| 7856 | \f |
| 7857 | static bfd_boolean |
| 7858 | is_sda_access_insn (unsigned long insn) |
| 7859 | { |
| 7860 | switch (N32_OP6 (insn)) |
| 7861 | { |
| 7862 | case N32_OP6_LWI: |
| 7863 | case N32_OP6_LHI: |
| 7864 | case N32_OP6_LHSI: |
| 7865 | case N32_OP6_LBI: |
| 7866 | case N32_OP6_LBSI: |
| 7867 | case N32_OP6_SWI: |
| 7868 | case N32_OP6_SHI: |
| 7869 | case N32_OP6_SBI: |
| 7870 | case N32_OP6_LWC: |
| 7871 | case N32_OP6_LDC: |
| 7872 | case N32_OP6_SWC: |
| 7873 | case N32_OP6_SDC: |
| 7874 | return TRUE; |
| 7875 | default: |
| 7876 | ; |
| 7877 | } |
| 7878 | return FALSE; |
| 7879 | } |
| 7880 | |
| 7881 | static unsigned long |
| 7882 | turn_insn_to_sda_access (uint32_t insn, bfd_signed_vma type, uint32_t *pinsn) |
| 7883 | { |
| 7884 | uint32_t oinsn = 0; |
| 7885 | |
| 7886 | switch (type) |
| 7887 | { |
| 7888 | case R_NDS32_GOT_LO12: |
| 7889 | case R_NDS32_GOTOFF_LO12: |
| 7890 | case R_NDS32_PLTREL_LO12: |
| 7891 | case R_NDS32_PLT_GOTREL_LO12: |
| 7892 | case R_NDS32_LO12S0_RELA: |
| 7893 | switch (N32_OP6 (insn)) |
| 7894 | { |
| 7895 | case N32_OP6_LBI: |
| 7896 | /* lbi.gp */ |
| 7897 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); |
| 7898 | break; |
| 7899 | case N32_OP6_LBSI: |
| 7900 | /* lbsi.gp */ |
| 7901 | oinsn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); |
| 7902 | break; |
| 7903 | case N32_OP6_SBI: |
| 7904 | /* sbi.gp */ |
| 7905 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); |
| 7906 | break; |
| 7907 | case N32_OP6_ORI: |
| 7908 | /* addi.gp */ |
| 7909 | oinsn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); |
| 7910 | break; |
| 7911 | } |
| 7912 | break; |
| 7913 | |
| 7914 | case R_NDS32_LO12S1_RELA: |
| 7915 | switch (N32_OP6 (insn)) |
| 7916 | { |
| 7917 | case N32_OP6_LHI: |
| 7918 | /* lhi.gp */ |
| 7919 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); |
| 7920 | break; |
| 7921 | case N32_OP6_LHSI: |
| 7922 | /* lhsi.gp */ |
| 7923 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); |
| 7924 | break; |
| 7925 | case N32_OP6_SHI: |
| 7926 | /* shi.gp */ |
| 7927 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); |
| 7928 | break; |
| 7929 | } |
| 7930 | break; |
| 7931 | |
| 7932 | case R_NDS32_LO12S2_RELA: |
| 7933 | switch (N32_OP6 (insn)) |
| 7934 | { |
| 7935 | case N32_OP6_LWI: |
| 7936 | /* lwi.gp */ |
| 7937 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); |
| 7938 | break; |
| 7939 | case N32_OP6_SWI: |
| 7940 | /* swi.gp */ |
| 7941 | oinsn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); |
| 7942 | break; |
| 7943 | } |
| 7944 | break; |
| 7945 | |
| 7946 | case R_NDS32_LO12S2_DP_RELA: |
| 7947 | case R_NDS32_LO12S2_SP_RELA: |
| 7948 | oinsn = (insn & 0x7ff07000) | (REG_GP << 15); |
| 7949 | break; |
| 7950 | } |
| 7951 | |
| 7952 | if (oinsn) |
| 7953 | *pinsn = oinsn; |
| 7954 | |
| 7955 | return oinsn != 0; |
| 7956 | } |
| 7957 | |
| 7958 | /* Linker hasn't found the correct merge section for non-section symbol |
| 7959 | in relax time, this work is left to the function elf_link_input_bfd(). |
| 7960 | So for non-section symbol, _bfd_merged_section_offset is also needed |
| 7961 | to find the correct symbol address. */ |
| 7962 | |
| 7963 | static bfd_vma |
| 7964 | nds32_elf_rela_local_sym (bfd *abfd, Elf_Internal_Sym *sym, |
| 7965 | asection **psec, Elf_Internal_Rela *rel) |
| 7966 | { |
| 7967 | asection *sec = *psec; |
| 7968 | bfd_vma relocation; |
| 7969 | |
| 7970 | relocation = (sec->output_section->vma |
| 7971 | + sec->output_offset + sym->st_value); |
| 7972 | if ((sec->flags & SEC_MERGE) && sec->sec_info_type == SEC_INFO_TYPE_MERGE) |
| 7973 | { |
| 7974 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 7975 | rel->r_addend = |
| 7976 | _bfd_merged_section_offset (abfd, psec, |
| 7977 | elf_section_data (sec)->sec_info, |
| 7978 | sym->st_value + rel->r_addend); |
| 7979 | else |
| 7980 | rel->r_addend = |
| 7981 | _bfd_merged_section_offset (abfd, psec, |
| 7982 | elf_section_data (sec)->sec_info, |
| 7983 | sym->st_value) + rel->r_addend; |
| 7984 | |
| 7985 | if (sec != *psec) |
| 7986 | { |
| 7987 | /* If we have changed the section, and our original section is |
| 7988 | marked with SEC_EXCLUDE, it means that the original |
| 7989 | SEC_MERGE section has been completely subsumed in some |
| 7990 | other SEC_MERGE section. In this case, we need to leave |
| 7991 | some info around for --emit-relocs. */ |
| 7992 | if ((sec->flags & SEC_EXCLUDE) != 0) |
| 7993 | sec->kept_section = *psec; |
| 7994 | sec = *psec; |
| 7995 | } |
| 7996 | rel->r_addend -= relocation; |
| 7997 | rel->r_addend += sec->output_section->vma + sec->output_offset; |
| 7998 | } |
| 7999 | return relocation; |
| 8000 | } |
| 8001 | |
| 8002 | static bfd_vma |
| 8003 | calculate_memory_address (bfd *abfd, Elf_Internal_Rela *irel, |
| 8004 | Elf_Internal_Sym *isymbuf, |
| 8005 | Elf_Internal_Shdr *symtab_hdr) |
| 8006 | { |
| 8007 | bfd_signed_vma foff; |
| 8008 | bfd_vma symval, addend; |
| 8009 | Elf_Internal_Rela irel_fn; |
| 8010 | Elf_Internal_Sym *isym; |
| 8011 | asection *sym_sec; |
| 8012 | |
| 8013 | /* Get the value of the symbol referred to by the reloc. */ |
| 8014 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 8015 | { |
| 8016 | /* A local symbol. */ |
| 8017 | isym = isymbuf + ELF32_R_SYM (irel->r_info); |
| 8018 | |
| 8019 | if (isym->st_shndx == SHN_UNDEF) |
| 8020 | sym_sec = bfd_und_section_ptr; |
| 8021 | else if (isym->st_shndx == SHN_ABS) |
| 8022 | sym_sec = bfd_abs_section_ptr; |
| 8023 | else if (isym->st_shndx == SHN_COMMON) |
| 8024 | sym_sec = bfd_com_section_ptr; |
| 8025 | else |
| 8026 | sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 8027 | memcpy (&irel_fn, irel, sizeof (Elf_Internal_Rela)); |
| 8028 | symval = nds32_elf_rela_local_sym (abfd, isym, &sym_sec, &irel_fn); |
| 8029 | addend = irel_fn.r_addend; |
| 8030 | } |
| 8031 | else |
| 8032 | { |
| 8033 | unsigned long indx; |
| 8034 | struct elf_link_hash_entry *h; |
| 8035 | |
| 8036 | /* An external symbol. */ |
| 8037 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 8038 | h = elf_sym_hashes (abfd)[indx]; |
| 8039 | BFD_ASSERT (h != NULL); |
| 8040 | |
| 8041 | while (h->root.type == bfd_link_hash_indirect |
| 8042 | || h->root.type == bfd_link_hash_warning) |
| 8043 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 8044 | |
| 8045 | if (h->root.type != bfd_link_hash_defined |
| 8046 | && h->root.type != bfd_link_hash_defweak) |
| 8047 | /* This appears to be a reference to an undefined |
| 8048 | symbol. Just ignore it--it will be caught by the |
| 8049 | regular reloc processing. */ |
| 8050 | return 0; |
| 8051 | |
| 8052 | if (h->root.u.def.section->flags & SEC_MERGE) |
| 8053 | { |
| 8054 | sym_sec = h->root.u.def.section; |
| 8055 | symval = _bfd_merged_section_offset (abfd, &sym_sec, elf_section_data |
| 8056 | (sym_sec)->sec_info, h->root.u.def.value); |
| 8057 | symval = symval + sym_sec->output_section->vma |
| 8058 | + sym_sec->output_offset; |
| 8059 | } |
| 8060 | else |
| 8061 | symval = (h->root.u.def.value |
| 8062 | + h->root.u.def.section->output_section->vma |
| 8063 | + h->root.u.def.section->output_offset); |
| 8064 | addend = irel->r_addend; |
| 8065 | } |
| 8066 | |
| 8067 | foff = symval + addend; |
| 8068 | |
| 8069 | return foff; |
| 8070 | } |
| 8071 | |
| 8072 | static bfd_vma |
| 8073 | calculate_got_memory_address (bfd *abfd, struct bfd_link_info *link_info, |
| 8074 | Elf_Internal_Rela *irel, |
| 8075 | Elf_Internal_Shdr *symtab_hdr) |
| 8076 | { |
| 8077 | int symndx; |
| 8078 | bfd_vma *local_got_offsets; |
| 8079 | /* Get the value of the symbol referred to by the reloc. */ |
| 8080 | struct elf_link_hash_entry *h; |
| 8081 | struct elf_nds32_link_hash_table *htab = nds32_elf_hash_table (link_info); |
| 8082 | |
| 8083 | /* An external symbol. */ |
| 8084 | symndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 8085 | h = elf_sym_hashes (abfd)[symndx]; |
| 8086 | while (h->root.type == bfd_link_hash_indirect |
| 8087 | || h->root.type == bfd_link_hash_warning) |
| 8088 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 8089 | |
| 8090 | if (symndx >= 0) |
| 8091 | { |
| 8092 | BFD_ASSERT (h != NULL); |
| 8093 | return htab->sgot->output_section->vma + htab->sgot->output_offset |
| 8094 | + h->got.offset; |
| 8095 | } |
| 8096 | else |
| 8097 | { |
| 8098 | local_got_offsets = elf_local_got_offsets (abfd); |
| 8099 | BFD_ASSERT (local_got_offsets != NULL); |
| 8100 | return htab->sgot->output_section->vma + htab->sgot->output_offset |
| 8101 | + local_got_offsets[ELF32_R_SYM (irel->r_info)]; |
| 8102 | } |
| 8103 | |
| 8104 | /* The _GLOBAL_OFFSET_TABLE_ may be undefweak(or should be?). */ |
| 8105 | /* The check of h->root.type is passed. */ |
| 8106 | } |
| 8107 | |
| 8108 | static int |
| 8109 | is_16bit_NOP (bfd *abfd ATTRIBUTE_UNUSED, |
| 8110 | asection *sec, Elf_Internal_Rela *rel) |
| 8111 | { |
| 8112 | bfd_byte *contents; |
| 8113 | unsigned short insn16; |
| 8114 | |
| 8115 | if (!(rel->r_addend & R_NDS32_INSN16_CONVERT_FLAG)) |
| 8116 | return FALSE; |
| 8117 | contents = elf_section_data (sec)->this_hdr.contents; |
| 8118 | insn16 = bfd_getb16 (contents + rel->r_offset); |
| 8119 | if (insn16 == NDS32_NOP16) |
| 8120 | return TRUE; |
| 8121 | return FALSE; |
| 8122 | } |
| 8123 | |
| 8124 | /* It checks whether the instruction could be converted to |
| 8125 | 16-bit form and returns the converted one. |
| 8126 | |
| 8127 | `internal_relocs' is supposed to be sorted. */ |
| 8128 | |
| 8129 | static int |
| 8130 | is_convert_32_to_16 (bfd *abfd, asection *sec, |
| 8131 | Elf_Internal_Rela *reloc, |
| 8132 | Elf_Internal_Rela *internal_relocs, |
| 8133 | Elf_Internal_Rela *irelend, |
| 8134 | uint16_t *insn16) |
| 8135 | { |
| 8136 | #define NORMAL_32_TO_16 (1 << 0) |
| 8137 | #define SPECIAL_32_TO_16 (1 << 1) |
| 8138 | bfd_byte *contents = NULL; |
| 8139 | bfd_signed_vma off; |
| 8140 | bfd_vma mem_addr; |
| 8141 | uint32_t insn = 0; |
| 8142 | Elf_Internal_Rela *pc_rel; |
| 8143 | int pic_ext_target = 0; |
| 8144 | Elf_Internal_Shdr *symtab_hdr; |
| 8145 | Elf_Internal_Sym *isymbuf = NULL; |
| 8146 | int convert_type; |
| 8147 | bfd_vma offset; |
| 8148 | |
| 8149 | if (reloc->r_offset + 4 > sec->size) |
| 8150 | return FALSE; |
| 8151 | |
| 8152 | offset = reloc->r_offset; |
| 8153 | |
| 8154 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
| 8155 | return FALSE; |
| 8156 | insn = bfd_getb32 (contents + offset); |
| 8157 | |
| 8158 | if (nds32_convert_32_to_16 (abfd, insn, insn16, NULL)) |
| 8159 | convert_type = NORMAL_32_TO_16; |
| 8160 | else if (special_convert_32_to_16 (insn, insn16, reloc)) |
| 8161 | convert_type = SPECIAL_32_TO_16; |
| 8162 | else |
| 8163 | return FALSE; |
| 8164 | |
| 8165 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 8166 | if (!nds32_get_local_syms (abfd, sec, &isymbuf)) |
| 8167 | return FALSE; |
| 8168 | |
| 8169 | /* Find the first relocation of the same relocation-type, |
| 8170 | so we iteratie them forward. */ |
| 8171 | pc_rel = reloc; |
| 8172 | while ((pc_rel - 1) >= internal_relocs && pc_rel[-1].r_offset == offset) |
| 8173 | pc_rel--; |
| 8174 | |
| 8175 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) |
| 8176 | { |
| 8177 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA |
| 8178 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA |
| 8179 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA |
| 8180 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) |
| 8181 | { |
| 8182 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, |
| 8183 | &pic_ext_target); |
| 8184 | if (off >= ACCURATE_8BIT_S1 || off < -ACCURATE_8BIT_S1 |
| 8185 | || off == 0) |
| 8186 | return FALSE; |
| 8187 | break; |
| 8188 | } |
| 8189 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) |
| 8190 | { |
| 8191 | /* movi => movi55 */ |
| 8192 | mem_addr = calculate_memory_address (abfd, pc_rel, isymbuf, |
| 8193 | symtab_hdr); |
| 8194 | /* mem_addr is unsigned, but the value should |
| 8195 | be between [-16, 15]. */ |
| 8196 | if ((mem_addr + 0x10) >> 5) |
| 8197 | return FALSE; |
| 8198 | break; |
| 8199 | } |
| 8200 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_20) |
| 8201 | || (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_TLS_LE_LO12)) |
| 8202 | { |
| 8203 | /* It never happen movi to movi55 for R_NDS32_TLS_LE_20, |
| 8204 | because it can be relaxed to addi for TLS_LE_ADD. */ |
| 8205 | return FALSE; |
| 8206 | } |
| 8207 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA |
| 8208 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) |
| 8209 | && (reloc->r_addend & R_NDS32_INSN16_FP7U2_FLAG) |
| 8210 | && convert_type == SPECIAL_32_TO_16) |
| 8211 | { |
| 8212 | /* fp-as-gp |
| 8213 | We've selected a best fp-base for this access, so we can |
| 8214 | always resolve it anyway. Do nothing. */ |
| 8215 | break; |
| 8216 | } |
| 8217 | else if ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_NONE |
| 8218 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_RELA_GNU_VTINHERIT)) |
| 8219 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_RELA_GNU_VTENTRY) |
| 8220 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_INSN16)) |
| 8221 | || ((ELF32_R_TYPE (pc_rel->r_info) > R_NDS32_LOADSTORE) |
| 8222 | && (ELF32_R_TYPE (pc_rel->r_info) < R_NDS32_DWARF2_OP1_RELA))) |
| 8223 | { |
| 8224 | /* Prevent unresolved addi instruction translate |
| 8225 | to addi45 or addi333. */ |
| 8226 | return FALSE; |
| 8227 | } |
| 8228 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
| 8229 | { |
| 8230 | off = calculate_offset (abfd, sec, pc_rel, isymbuf, symtab_hdr, |
| 8231 | &pic_ext_target); |
| 8232 | if (off >= ACCURATE_U9BIT_S1 || off <= 0) |
| 8233 | return FALSE; |
| 8234 | break; |
| 8235 | } |
| 8236 | } |
| 8237 | |
| 8238 | return TRUE; |
| 8239 | } |
| 8240 | |
| 8241 | static void |
| 8242 | nds32_elf_write_16 (bfd *abfd ATTRIBUTE_UNUSED, bfd_byte *contents, |
| 8243 | Elf_Internal_Rela *reloc, |
| 8244 | Elf_Internal_Rela *internal_relocs, |
| 8245 | Elf_Internal_Rela *irelend, |
| 8246 | unsigned short insn16) |
| 8247 | { |
| 8248 | Elf_Internal_Rela *pc_rel; |
| 8249 | bfd_vma offset; |
| 8250 | |
| 8251 | offset = reloc->r_offset; |
| 8252 | bfd_putb16 (insn16, contents + offset); |
| 8253 | /* Find the first relocation of the same relocation-type, |
| 8254 | so we iteratie them forward. */ |
| 8255 | pc_rel = reloc; |
| 8256 | while ((pc_rel - 1) > internal_relocs && pc_rel[-1].r_offset == offset) |
| 8257 | pc_rel--; |
| 8258 | |
| 8259 | for (; pc_rel < irelend && pc_rel->r_offset == offset; pc_rel++) |
| 8260 | { |
| 8261 | if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_15_PCREL_RELA |
| 8262 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17_PCREL_RELA |
| 8263 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PCREL_RELA) |
| 8264 | { |
| 8265 | pc_rel->r_info = |
| 8266 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PCREL_RELA); |
| 8267 | } |
| 8268 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_25_PLTREL) |
| 8269 | pc_rel->r_info = |
| 8270 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_9_PLTREL); |
| 8271 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_20_RELA) |
| 8272 | pc_rel->r_info = |
| 8273 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_5_RELA); |
| 8274 | else if (ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA15S2_RELA |
| 8275 | || ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_SDA17S2_RELA) |
| 8276 | pc_rel->r_info = |
| 8277 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_SDA_FP7U2_RELA); |
| 8278 | else if ((ELF32_R_TYPE (pc_rel->r_info) == R_NDS32_17IFC_PCREL_RELA)) |
| 8279 | pc_rel->r_info = |
| 8280 | ELF32_R_INFO (ELF32_R_SYM (pc_rel->r_info), R_NDS32_10IFCU_PCREL_RELA); |
| 8281 | } |
| 8282 | } |
| 8283 | |
| 8284 | /* Find a relocation of type specified by `reloc_type' |
| 8285 | of the same r_offset with reloc. |
| 8286 | If not found, return irelend. |
| 8287 | |
| 8288 | Assuming relocations are sorted by r_offset, |
| 8289 | we find the relocation from `reloc' backward untill relocs, |
| 8290 | or find it from `reloc' forward untill irelend. */ |
| 8291 | |
| 8292 | static Elf_Internal_Rela * |
| 8293 | find_relocs_at_address (Elf_Internal_Rela *reloc, |
| 8294 | Elf_Internal_Rela *relocs, |
| 8295 | Elf_Internal_Rela *irelend, |
| 8296 | enum elf_nds32_reloc_type reloc_type) |
| 8297 | { |
| 8298 | Elf_Internal_Rela *rel_t; |
| 8299 | |
| 8300 | /* Find backward. */ |
| 8301 | for (rel_t = reloc; |
| 8302 | rel_t >= relocs && rel_t->r_offset == reloc->r_offset; |
| 8303 | rel_t--) |
| 8304 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) |
| 8305 | return rel_t; |
| 8306 | |
| 8307 | /* We didn't find it backward. Try find it forward. */ |
| 8308 | for (rel_t = reloc; |
| 8309 | rel_t < irelend && rel_t->r_offset == reloc->r_offset; |
| 8310 | rel_t++) |
| 8311 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) |
| 8312 | return rel_t; |
| 8313 | |
| 8314 | return irelend; |
| 8315 | } |
| 8316 | |
| 8317 | /* Find a relocation of specified type and offset. |
| 8318 | `reloc' is just a refence point to find a relocation at specified offset. |
| 8319 | If not found, return irelend. |
| 8320 | |
| 8321 | Assuming relocations are sorted by r_offset, |
| 8322 | we find the relocation from `reloc' backward untill relocs, |
| 8323 | or find it from `reloc' forward untill irelend. */ |
| 8324 | |
| 8325 | static Elf_Internal_Rela * |
| 8326 | find_relocs_at_address_addr (Elf_Internal_Rela *reloc, |
| 8327 | Elf_Internal_Rela *relocs, |
| 8328 | Elf_Internal_Rela *irelend, |
| 8329 | enum elf_nds32_reloc_type reloc_type, |
| 8330 | bfd_vma offset_p) |
| 8331 | { |
| 8332 | Elf_Internal_Rela *rel_t = NULL; |
| 8333 | |
| 8334 | /* First, we try to find a relocation of offset `offset_p', |
| 8335 | and then we use find_relocs_at_address to find specific type. */ |
| 8336 | |
| 8337 | if (reloc->r_offset > offset_p) |
| 8338 | { |
| 8339 | /* Find backward. */ |
| 8340 | for (rel_t = reloc; |
| 8341 | rel_t >= relocs && rel_t->r_offset > offset_p; rel_t--) |
| 8342 | /* Do nothing. */; |
| 8343 | } |
| 8344 | else if (reloc->r_offset < offset_p) |
| 8345 | { |
| 8346 | /* Find forward. */ |
| 8347 | for (rel_t = reloc; |
| 8348 | rel_t < irelend && rel_t->r_offset < offset_p; rel_t++) |
| 8349 | /* Do nothing. */; |
| 8350 | } |
| 8351 | else |
| 8352 | rel_t = reloc; |
| 8353 | |
| 8354 | /* Not found? */ |
| 8355 | if (rel_t < relocs || rel_t == irelend || rel_t->r_offset != offset_p) |
| 8356 | return irelend; |
| 8357 | |
| 8358 | return find_relocs_at_address (rel_t, relocs, irelend, reloc_type); |
| 8359 | } |
| 8360 | |
| 8361 | static bfd_boolean |
| 8362 | nds32_elf_check_dup_relocs (Elf_Internal_Rela *reloc, |
| 8363 | Elf_Internal_Rela *internal_relocs, |
| 8364 | Elf_Internal_Rela *irelend, |
| 8365 | unsigned char reloc_type) |
| 8366 | { |
| 8367 | Elf_Internal_Rela *rel_t; |
| 8368 | |
| 8369 | for (rel_t = reloc; |
| 8370 | rel_t >= internal_relocs && rel_t->r_offset == reloc->r_offset; |
| 8371 | rel_t--) |
| 8372 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) |
| 8373 | { |
| 8374 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) |
| 8375 | && rel_t->r_addend == reloc->r_addend) |
| 8376 | continue; |
| 8377 | return TRUE; |
| 8378 | } |
| 8379 | |
| 8380 | for (rel_t = reloc; rel_t < irelend && rel_t->r_offset == reloc->r_offset; |
| 8381 | rel_t++) |
| 8382 | if (ELF32_R_TYPE (rel_t->r_info) == reloc_type) |
| 8383 | { |
| 8384 | if (ELF32_R_SYM (rel_t->r_info) == ELF32_R_SYM (reloc->r_info) |
| 8385 | && rel_t->r_addend == reloc->r_addend) |
| 8386 | continue; |
| 8387 | return TRUE; |
| 8388 | } |
| 8389 | |
| 8390 | return FALSE; |
| 8391 | } |
| 8392 | |
| 8393 | typedef struct nds32_elf_blank nds32_elf_blank_t; |
| 8394 | struct nds32_elf_blank |
| 8395 | { |
| 8396 | /* Where the blank begins. */ |
| 8397 | bfd_vma offset; |
| 8398 | /* The size of the blank. */ |
| 8399 | bfd_vma size; |
| 8400 | /* The accumulative size before this blank. */ |
| 8401 | bfd_vma total_size; |
| 8402 | nds32_elf_blank_t *next; |
| 8403 | nds32_elf_blank_t *prev; |
| 8404 | }; |
| 8405 | |
| 8406 | static nds32_elf_blank_t *blank_free_list = NULL; |
| 8407 | |
| 8408 | static nds32_elf_blank_t * |
| 8409 | create_nds32_elf_blank (bfd_vma offset_p, bfd_vma size_p) |
| 8410 | { |
| 8411 | nds32_elf_blank_t *blank_t; |
| 8412 | |
| 8413 | if (blank_free_list) |
| 8414 | { |
| 8415 | blank_t = blank_free_list; |
| 8416 | blank_free_list = blank_free_list->next; |
| 8417 | } |
| 8418 | else |
| 8419 | blank_t = bfd_malloc (sizeof (nds32_elf_blank_t)); |
| 8420 | |
| 8421 | if (blank_t == NULL) |
| 8422 | return NULL; |
| 8423 | |
| 8424 | blank_t->offset = offset_p; |
| 8425 | blank_t->size = size_p; |
| 8426 | blank_t->total_size = 0; |
| 8427 | blank_t->next = NULL; |
| 8428 | blank_t->prev = NULL; |
| 8429 | |
| 8430 | return blank_t; |
| 8431 | } |
| 8432 | |
| 8433 | static void |
| 8434 | remove_nds32_elf_blank (nds32_elf_blank_t *blank_p) |
| 8435 | { |
| 8436 | if (blank_free_list) |
| 8437 | { |
| 8438 | blank_free_list->prev = blank_p; |
| 8439 | blank_p->next = blank_free_list; |
| 8440 | } |
| 8441 | else |
| 8442 | blank_p->next = NULL; |
| 8443 | |
| 8444 | blank_p->prev = NULL; |
| 8445 | blank_free_list = blank_p; |
| 8446 | } |
| 8447 | |
| 8448 | static void |
| 8449 | clean_nds32_elf_blank (void) |
| 8450 | { |
| 8451 | nds32_elf_blank_t *blank_t; |
| 8452 | |
| 8453 | while (blank_free_list) |
| 8454 | { |
| 8455 | blank_t = blank_free_list; |
| 8456 | blank_free_list = blank_free_list->next; |
| 8457 | free (blank_t); |
| 8458 | } |
| 8459 | } |
| 8460 | |
| 8461 | static nds32_elf_blank_t * |
| 8462 | search_nds32_elf_blank (nds32_elf_blank_t *blank_p, bfd_vma addr) |
| 8463 | { |
| 8464 | nds32_elf_blank_t *blank_t; |
| 8465 | |
| 8466 | if (!blank_p) |
| 8467 | return NULL; |
| 8468 | blank_t = blank_p; |
| 8469 | |
| 8470 | while (blank_t && addr < blank_t->offset) |
| 8471 | blank_t = blank_t->prev; |
| 8472 | while (blank_t && blank_t->next && addr >= blank_t->next->offset) |
| 8473 | blank_t = blank_t->next; |
| 8474 | |
| 8475 | return blank_t; |
| 8476 | } |
| 8477 | |
| 8478 | static bfd_vma |
| 8479 | get_nds32_elf_blank_total (nds32_elf_blank_t **blank_p, bfd_vma addr, |
| 8480 | int overwrite) |
| 8481 | { |
| 8482 | nds32_elf_blank_t *blank_t; |
| 8483 | |
| 8484 | blank_t = search_nds32_elf_blank (*blank_p, addr); |
| 8485 | if (!blank_t) |
| 8486 | return 0; |
| 8487 | |
| 8488 | if (overwrite) |
| 8489 | *blank_p = blank_t; |
| 8490 | |
| 8491 | if (addr < blank_t->offset + blank_t->size) |
| 8492 | return blank_t->total_size + (addr - blank_t->offset); |
| 8493 | else |
| 8494 | return blank_t->total_size + blank_t->size; |
| 8495 | } |
| 8496 | |
| 8497 | static bfd_boolean |
| 8498 | insert_nds32_elf_blank (nds32_elf_blank_t **blank_p, bfd_vma addr, bfd_vma len) |
| 8499 | { |
| 8500 | nds32_elf_blank_t *blank_t, *blank_t2; |
| 8501 | |
| 8502 | if (!*blank_p) |
| 8503 | { |
| 8504 | *blank_p = create_nds32_elf_blank (addr, len); |
| 8505 | return *blank_p ? TRUE : FALSE; |
| 8506 | } |
| 8507 | |
| 8508 | blank_t = search_nds32_elf_blank (*blank_p, addr); |
| 8509 | |
| 8510 | if (blank_t == NULL) |
| 8511 | { |
| 8512 | blank_t = create_nds32_elf_blank (addr, len); |
| 8513 | if (!blank_t) |
| 8514 | return FALSE; |
| 8515 | while ((*blank_p)->prev != NULL) |
| 8516 | *blank_p = (*blank_p)->prev; |
| 8517 | blank_t->next = *blank_p; |
| 8518 | (*blank_p)->prev = blank_t; |
| 8519 | (*blank_p) = blank_t; |
| 8520 | return TRUE; |
| 8521 | } |
| 8522 | |
| 8523 | if (addr < blank_t->offset + blank_t->size) |
| 8524 | { |
| 8525 | if (addr > blank_t->offset + blank_t->size) |
| 8526 | blank_t->size = addr - blank_t->offset; |
| 8527 | } |
| 8528 | else |
| 8529 | { |
| 8530 | blank_t2 = create_nds32_elf_blank (addr, len); |
| 8531 | if (!blank_t2) |
| 8532 | return FALSE; |
| 8533 | if (blank_t->next) |
| 8534 | { |
| 8535 | blank_t->next->prev = blank_t2; |
| 8536 | blank_t2->next = blank_t->next; |
| 8537 | } |
| 8538 | blank_t2->prev = blank_t; |
| 8539 | blank_t->next = blank_t2; |
| 8540 | *blank_p = blank_t2; |
| 8541 | } |
| 8542 | |
| 8543 | return TRUE; |
| 8544 | } |
| 8545 | |
| 8546 | static bfd_boolean |
| 8547 | insert_nds32_elf_blank_recalc_total (nds32_elf_blank_t **blank_p, bfd_vma addr, |
| 8548 | bfd_vma len) |
| 8549 | { |
| 8550 | nds32_elf_blank_t *blank_t; |
| 8551 | |
| 8552 | if (!insert_nds32_elf_blank (blank_p, addr, len)) |
| 8553 | return FALSE; |
| 8554 | |
| 8555 | blank_t = *blank_p; |
| 8556 | |
| 8557 | if (!blank_t->prev) |
| 8558 | { |
| 8559 | blank_t->total_size = 0; |
| 8560 | blank_t = blank_t->next; |
| 8561 | } |
| 8562 | |
| 8563 | while (blank_t) |
| 8564 | { |
| 8565 | blank_t->total_size = blank_t->prev->total_size + blank_t->prev->size; |
| 8566 | blank_t = blank_t->next; |
| 8567 | } |
| 8568 | |
| 8569 | return TRUE; |
| 8570 | } |
| 8571 | |
| 8572 | static void |
| 8573 | calc_nds32_blank_total (nds32_elf_blank_t *blank_p) |
| 8574 | { |
| 8575 | nds32_elf_blank_t *blank_t; |
| 8576 | bfd_vma total_size = 0; |
| 8577 | |
| 8578 | if (!blank_p) |
| 8579 | return; |
| 8580 | |
| 8581 | blank_t = blank_p; |
| 8582 | while (blank_t->prev) |
| 8583 | blank_t = blank_t->prev; |
| 8584 | while (blank_t) |
| 8585 | { |
| 8586 | blank_t->total_size = total_size; |
| 8587 | total_size += blank_t->size; |
| 8588 | blank_t = blank_t->next; |
| 8589 | } |
| 8590 | } |
| 8591 | |
| 8592 | static bfd_boolean |
| 8593 | nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec, |
| 8594 | nds32_elf_blank_t *blank_p) |
| 8595 | { |
| 8596 | Elf_Internal_Shdr *symtab_hdr; /* Symbol table header of this bfd. */ |
| 8597 | Elf_Internal_Sym *isym = NULL; /* Symbol table of this bfd. */ |
| 8598 | Elf_Internal_Sym *isymend; /* Symbol entry iterator. */ |
| 8599 | unsigned int sec_shndx; /* The section the be relaxed. */ |
| 8600 | bfd_byte *contents; /* Contents data of iterating section. */ |
| 8601 | Elf_Internal_Rela *internal_relocs; |
| 8602 | Elf_Internal_Rela *irel; |
| 8603 | Elf_Internal_Rela *irelend; |
| 8604 | struct elf_link_hash_entry **sym_hashes; |
| 8605 | struct elf_link_hash_entry **end_hashes; |
| 8606 | unsigned int symcount; |
| 8607 | asection *sect; |
| 8608 | nds32_elf_blank_t *blank_t; |
| 8609 | nds32_elf_blank_t *blank_t2; |
| 8610 | nds32_elf_blank_t *blank_head; |
| 8611 | |
| 8612 | blank_head = blank_t = blank_p; |
| 8613 | while (blank_head->prev != NULL) |
| 8614 | blank_head = blank_head->prev; |
| 8615 | while (blank_t->next != NULL) |
| 8616 | blank_t = blank_t->next; |
| 8617 | |
| 8618 | if (blank_t->offset + blank_t->size <= sec->size) |
| 8619 | { |
| 8620 | blank_t->next = create_nds32_elf_blank (sec->size + 4, 0); |
| 8621 | blank_t->next->prev = blank_t; |
| 8622 | } |
| 8623 | if (blank_head->offset > 0) |
| 8624 | { |
| 8625 | blank_head->prev = create_nds32_elf_blank (0, 0); |
| 8626 | blank_head->prev->next = blank_head; |
| 8627 | blank_head = blank_head->prev; |
| 8628 | } |
| 8629 | |
| 8630 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); |
| 8631 | |
| 8632 | /* The deletion must stop at the next ALIGN reloc for an alignment |
| 8633 | power larger than the number of bytes we are deleting. */ |
| 8634 | |
| 8635 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 8636 | if (!nds32_get_local_syms (abfd, sec, &isym)) |
| 8637 | return FALSE; |
| 8638 | |
| 8639 | if (isym == NULL) |
| 8640 | { |
| 8641 | isym = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 8642 | symtab_hdr->sh_info, 0, NULL, NULL, NULL); |
| 8643 | symtab_hdr->contents = (bfd_byte *) isym; |
| 8644 | } |
| 8645 | |
| 8646 | if (isym == NULL || symtab_hdr->sh_info == 0) |
| 8647 | return FALSE; |
| 8648 | |
| 8649 | blank_t = blank_head; |
| 8650 | calc_nds32_blank_total (blank_head); |
| 8651 | |
| 8652 | for (sect = abfd->sections; sect != NULL; sect = sect->next) |
| 8653 | { |
| 8654 | /* Adjust all the relocs. */ |
| 8655 | |
| 8656 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ |
| 8657 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sect, NULL, NULL, |
| 8658 | TRUE /* keep_memory */); |
| 8659 | irelend = internal_relocs + sect->reloc_count; |
| 8660 | |
| 8661 | blank_t = blank_head; |
| 8662 | blank_t2 = blank_head; |
| 8663 | |
| 8664 | if (!(sect->flags & SEC_RELOC)) |
| 8665 | continue; |
| 8666 | |
| 8667 | nds32_get_section_contents (abfd, sect, &contents, TRUE); |
| 8668 | |
| 8669 | for (irel = internal_relocs; irel < irelend; irel++) |
| 8670 | { |
| 8671 | bfd_vma raddr; |
| 8672 | |
| 8673 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_DIFF8 |
| 8674 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_DIFF32 |
| 8675 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) |
| 8676 | { |
| 8677 | unsigned long val = 0; |
| 8678 | unsigned long mask; |
| 8679 | long before, between; |
| 8680 | long offset = 0; |
| 8681 | |
| 8682 | switch (ELF32_R_TYPE (irel->r_info)) |
| 8683 | { |
| 8684 | case R_NDS32_DIFF8: |
| 8685 | offset = bfd_get_8 (abfd, contents + irel->r_offset); |
| 8686 | break; |
| 8687 | case R_NDS32_DIFF16: |
| 8688 | offset = bfd_get_16 (abfd, contents + irel->r_offset); |
| 8689 | break; |
| 8690 | case R_NDS32_DIFF32: |
| 8691 | val = bfd_get_32 (abfd, contents + irel->r_offset); |
| 8692 | /* Get the signed bit and mask for the high part. The |
| 8693 | gcc will alarm when right shift 32-bit since the |
| 8694 | type size of long may be 32-bit. */ |
| 8695 | mask = 0 - (val >> 31); |
| 8696 | if (mask) |
| 8697 | offset = (val | (mask - 0xffffffff)); |
| 8698 | else |
| 8699 | offset = val; |
| 8700 | break; |
| 8701 | default: |
| 8702 | BFD_ASSERT (0); |
| 8703 | } |
| 8704 | |
| 8705 | /* DIFF value |
| 8706 | 0 |encoded in location| |
| 8707 | |------------|-------------------|--------- |
| 8708 | sym+off(addend) |
| 8709 | -- before ---| ***************** |
| 8710 | --------------------- between ---| |
| 8711 | |
| 8712 | We only care how much data are relax between DIFF, |
| 8713 | marked as ***. */ |
| 8714 | |
| 8715 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); |
| 8716 | between = get_nds32_elf_blank_total (&blank_t, |
| 8717 | irel->r_addend + offset, 0); |
| 8718 | if (between == before) |
| 8719 | goto done_adjust_diff; |
| 8720 | |
| 8721 | switch (ELF32_R_TYPE (irel->r_info)) |
| 8722 | { |
| 8723 | case R_NDS32_DIFF8: |
| 8724 | bfd_put_8 (abfd, offset - (between - before), |
| 8725 | contents + irel->r_offset); |
| 8726 | break; |
| 8727 | case R_NDS32_DIFF16: |
| 8728 | bfd_put_16 (abfd, offset - (between - before), |
| 8729 | contents + irel->r_offset); |
| 8730 | break; |
| 8731 | case R_NDS32_DIFF32: |
| 8732 | bfd_put_32 (abfd, offset - (between - before), |
| 8733 | contents + irel->r_offset); |
| 8734 | break; |
| 8735 | } |
| 8736 | } |
| 8737 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_DIFF_ULEB128 |
| 8738 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx) |
| 8739 | { |
| 8740 | bfd_vma val = 0; |
| 8741 | unsigned int len = 0; |
| 8742 | unsigned long before, between; |
| 8743 | bfd_byte *endp, *p; |
| 8744 | |
| 8745 | val = read_unsigned_leb128 (abfd, contents + irel->r_offset, |
| 8746 | &len); |
| 8747 | |
| 8748 | before = get_nds32_elf_blank_total (&blank_t, irel->r_addend, 0); |
| 8749 | between = get_nds32_elf_blank_total (&blank_t, |
| 8750 | irel->r_addend + val, 0); |
| 8751 | if (between == before) |
| 8752 | goto done_adjust_diff; |
| 8753 | |
| 8754 | p = contents + irel->r_offset; |
| 8755 | endp = p + len -1; |
| 8756 | memset (p, 0x80, len); |
| 8757 | *(endp) = 0; |
| 8758 | p = write_uleb128 (p, val - (between - before)) - 1; |
| 8759 | if (p < endp) |
| 8760 | *p |= 0x80; |
| 8761 | } |
| 8762 | done_adjust_diff: |
| 8763 | |
| 8764 | if (sec == sect) |
| 8765 | { |
| 8766 | raddr = irel->r_offset; |
| 8767 | irel->r_offset -= get_nds32_elf_blank_total (&blank_t2, |
| 8768 | irel->r_offset, 1); |
| 8769 | |
| 8770 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) |
| 8771 | continue; |
| 8772 | if (blank_t2 && blank_t2->next |
| 8773 | && (blank_t2->offset > raddr |
| 8774 | || blank_t2->next->offset <= raddr)) |
| 8775 | (*_bfd_error_handler) |
| 8776 | (_("%B: %s\n"), abfd, |
| 8777 | "Error: search_nds32_elf_blank reports wrong node"); |
| 8778 | |
| 8779 | /* Mark reloc in deleted portion as NONE. |
| 8780 | For some relocs like R_NDS32_LABEL that doesn't modify the |
| 8781 | content in the section. R_NDS32_LABEL doesn't belong to the |
| 8782 | instruction in the section, so we should preserve it. */ |
| 8783 | if (raddr >= blank_t2->offset |
| 8784 | && raddr < blank_t2->offset + blank_t2->size |
| 8785 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL |
| 8786 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_BEGIN |
| 8787 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END |
| 8788 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY |
| 8789 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_SUBTRAHEND |
| 8790 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_MINUEND) |
| 8791 | { |
| 8792 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 8793 | R_NDS32_NONE); |
| 8794 | continue; |
| 8795 | } |
| 8796 | } |
| 8797 | |
| 8798 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE |
| 8799 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 8800 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) |
| 8801 | continue; |
| 8802 | |
| 8803 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info |
| 8804 | && isym[ELF32_R_SYM (irel->r_info)].st_shndx == sec_shndx |
| 8805 | && ELF_ST_TYPE (isym[ELF32_R_SYM (irel->r_info)].st_info) == STT_SECTION) |
| 8806 | { |
| 8807 | if (irel->r_addend <= sec->size) |
| 8808 | irel->r_addend -= |
| 8809 | get_nds32_elf_blank_total (&blank_t, irel->r_addend, 1); |
| 8810 | } |
| 8811 | } |
| 8812 | } |
| 8813 | |
| 8814 | /* Adjust the local symbols defined in this section. */ |
| 8815 | blank_t = blank_head; |
| 8816 | for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++) |
| 8817 | { |
| 8818 | if (isym->st_shndx == sec_shndx) |
| 8819 | { |
| 8820 | if (isym->st_value <= sec->size) |
| 8821 | { |
| 8822 | bfd_vma ahead; |
| 8823 | bfd_vma orig_addr = isym->st_value; |
| 8824 | |
| 8825 | ahead = get_nds32_elf_blank_total (&blank_t, isym->st_value, 1); |
| 8826 | isym->st_value -= ahead; |
| 8827 | |
| 8828 | /* Adjust function size. */ |
| 8829 | if (ELF32_ST_TYPE (isym->st_info) == STT_FUNC |
| 8830 | && isym->st_size > 0) |
| 8831 | isym->st_size -= |
| 8832 | get_nds32_elf_blank_total |
| 8833 | (&blank_t, orig_addr + isym->st_size, 0) - ahead; |
| 8834 | } |
| 8835 | } |
| 8836 | } |
| 8837 | |
| 8838 | /* Now adjust the global symbols defined in this section. */ |
| 8839 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) |
| 8840 | - symtab_hdr->sh_info); |
| 8841 | sym_hashes = elf_sym_hashes (abfd); |
| 8842 | end_hashes = sym_hashes + symcount; |
| 8843 | blank_t = blank_head; |
| 8844 | for (; sym_hashes < end_hashes; sym_hashes++) |
| 8845 | { |
| 8846 | struct elf_link_hash_entry *sym_hash = *sym_hashes; |
| 8847 | |
| 8848 | if ((sym_hash->root.type == bfd_link_hash_defined |
| 8849 | || sym_hash->root.type == bfd_link_hash_defweak) |
| 8850 | && sym_hash->root.u.def.section == sec) |
| 8851 | { |
| 8852 | if (sym_hash->root.u.def.value <= sec->size) |
| 8853 | { |
| 8854 | bfd_vma ahead; |
| 8855 | bfd_vma orig_addr = sym_hash->root.u.def.value; |
| 8856 | |
| 8857 | ahead = get_nds32_elf_blank_total (&blank_t, sym_hash->root.u.def.value, 1); |
| 8858 | sym_hash->root.u.def.value -= ahead; |
| 8859 | |
| 8860 | /* Adjust function size. */ |
| 8861 | if (sym_hash->type == STT_FUNC) |
| 8862 | sym_hash->size -= |
| 8863 | get_nds32_elf_blank_total |
| 8864 | (&blank_t, orig_addr + sym_hash->size, 0) - ahead; |
| 8865 | |
| 8866 | } |
| 8867 | } |
| 8868 | } |
| 8869 | |
| 8870 | contents = elf_section_data (sec)->this_hdr.contents; |
| 8871 | blank_t = blank_head; |
| 8872 | while (blank_t->next) |
| 8873 | { |
| 8874 | /* Actually delete the bytes. */ |
| 8875 | |
| 8876 | /* If current blank is the last blank overlap with current section, |
| 8877 | go to finish process. */ |
| 8878 | if (sec->size <= (blank_t->next->offset)) |
| 8879 | break; |
| 8880 | |
| 8881 | memmove (contents + blank_t->offset - blank_t->total_size, |
| 8882 | contents + blank_t->offset + blank_t->size, |
| 8883 | blank_t->next->offset - (blank_t->offset + blank_t->size)); |
| 8884 | |
| 8885 | blank_t = blank_t->next; |
| 8886 | } |
| 8887 | |
| 8888 | if (sec->size > (blank_t->offset + blank_t->size)) |
| 8889 | { |
| 8890 | /* There are remaining code between blank and section boundary. |
| 8891 | Move the remaining code to appropriate location. */ |
| 8892 | memmove (contents + blank_t->offset - blank_t->total_size, |
| 8893 | contents + blank_t->offset + blank_t->size, |
| 8894 | sec->size - (blank_t->offset + blank_t->size)); |
| 8895 | sec->size -= blank_t->total_size + blank_t->size; |
| 8896 | } |
| 8897 | else |
| 8898 | /* This blank is not entirely included in the section, |
| 8899 | reduce the section size by only part of the blank size. */ |
| 8900 | sec->size -= blank_t->total_size + (sec->size - blank_t->offset); |
| 8901 | |
| 8902 | while (blank_head) |
| 8903 | { |
| 8904 | blank_t = blank_head; |
| 8905 | blank_head = blank_head->next; |
| 8906 | remove_nds32_elf_blank (blank_t); |
| 8907 | } |
| 8908 | |
| 8909 | return TRUE; |
| 8910 | } |
| 8911 | |
| 8912 | /* Get the contents of a section. */ |
| 8913 | |
| 8914 | static int |
| 8915 | nds32_get_section_contents (bfd *abfd, asection *sec, |
| 8916 | bfd_byte **contents_p, bfd_boolean cache) |
| 8917 | { |
| 8918 | /* Get the section contents. */ |
| 8919 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 8920 | *contents_p = elf_section_data (sec)->this_hdr.contents; |
| 8921 | else |
| 8922 | { |
| 8923 | if (!bfd_malloc_and_get_section (abfd, sec, contents_p)) |
| 8924 | return FALSE; |
| 8925 | if (cache) |
| 8926 | elf_section_data (sec)->this_hdr.contents = *contents_p; |
| 8927 | } |
| 8928 | |
| 8929 | return TRUE; |
| 8930 | } |
| 8931 | |
| 8932 | /* Get the contents of the internal symbol of abfd. */ |
| 8933 | |
| 8934 | static int |
| 8935 | nds32_get_local_syms (bfd *abfd, asection *sec ATTRIBUTE_UNUSED, |
| 8936 | Elf_Internal_Sym **isymbuf_p) |
| 8937 | { |
| 8938 | Elf_Internal_Shdr *symtab_hdr; |
| 8939 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 8940 | |
| 8941 | /* Read this BFD's local symbols if we haven't done so already. */ |
| 8942 | if (*isymbuf_p == NULL && symtab_hdr->sh_info != 0) |
| 8943 | { |
| 8944 | *isymbuf_p = (Elf_Internal_Sym *) symtab_hdr->contents; |
| 8945 | if (*isymbuf_p == NULL) |
| 8946 | { |
| 8947 | *isymbuf_p = bfd_elf_get_elf_syms (abfd, symtab_hdr, |
| 8948 | symtab_hdr->sh_info, 0, |
| 8949 | NULL, NULL, NULL); |
| 8950 | if (*isymbuf_p == NULL) |
| 8951 | return FALSE; |
| 8952 | } |
| 8953 | } |
| 8954 | symtab_hdr->contents = (bfd_byte *) (*isymbuf_p); |
| 8955 | |
| 8956 | return TRUE; |
| 8957 | } |
| 8958 | |
| 8959 | /* Range of small data. */ |
| 8960 | static bfd_vma sdata_range[2][2]; |
| 8961 | static bfd_vma const sdata_init_range[2] = |
| 8962 | { ACCURATE_12BIT_S1, ACCURATE_19BIT }; |
| 8963 | |
| 8964 | static int |
| 8965 | nds32_elf_insn_size (bfd *abfd ATTRIBUTE_UNUSED, |
| 8966 | bfd_byte *contents, bfd_vma addr) |
| 8967 | { |
| 8968 | unsigned long insn = bfd_getb32 (contents + addr); |
| 8969 | |
| 8970 | if (insn & 0x80000000) |
| 8971 | return 2; |
| 8972 | |
| 8973 | return 4; |
| 8974 | } |
| 8975 | |
| 8976 | /* Set the gp relax range. We have to measure the safe range |
| 8977 | to do gp relaxation. */ |
| 8978 | |
| 8979 | static void |
| 8980 | relax_range_measurement (bfd *abfd) |
| 8981 | { |
| 8982 | asection *sec_f, *sec_b; |
| 8983 | /* For upper bound. */ |
| 8984 | bfd_vma maxpgsz = get_elf_backend_data (abfd)->maxpagesize; |
| 8985 | bfd_vma align; |
| 8986 | static int decide_relax_range = 0; |
| 8987 | int i; |
| 8988 | int range_number = sizeof (sdata_init_range) / sizeof (sdata_init_range[0]); |
| 8989 | |
| 8990 | if (decide_relax_range) |
| 8991 | return; |
| 8992 | decide_relax_range = 1; |
| 8993 | |
| 8994 | if (sda_rela_sec == NULL) |
| 8995 | { |
| 8996 | /* Since there is no data sections, we assume the range is page size. */ |
| 8997 | for (i = 0; i < range_number; i++) |
| 8998 | { |
| 8999 | sdata_range[i][0] = sdata_init_range[i] - 0x1000; |
| 9000 | sdata_range[i][1] = sdata_init_range[i] - 0x1000; |
| 9001 | } |
| 9002 | return; |
| 9003 | } |
| 9004 | |
| 9005 | /* Get the biggest alignment power after the gp located section. */ |
| 9006 | sec_f = sda_rela_sec->output_section; |
| 9007 | sec_b = sec_f->next; |
| 9008 | align = 0; |
| 9009 | while (sec_b != NULL) |
| 9010 | { |
| 9011 | if ((unsigned)(1 << sec_b->alignment_power) > align) |
| 9012 | align = (1 << sec_b->alignment_power); |
| 9013 | sec_b = sec_b->next; |
| 9014 | } |
| 9015 | |
| 9016 | /* I guess we can not determine the section before |
| 9017 | gp located section, so we assume the align is max page size. */ |
| 9018 | for (i = 0; i < range_number; i++) |
| 9019 | { |
| 9020 | sdata_range[i][1] = sdata_init_range[i] - align; |
| 9021 | BFD_ASSERT (sdata_range[i][1] <= sdata_init_range[i]); |
| 9022 | sdata_range[i][0] = sdata_init_range[i] - maxpgsz; |
| 9023 | BFD_ASSERT (sdata_range[i][0] <= sdata_init_range[i]); |
| 9024 | } |
| 9025 | } |
| 9026 | |
| 9027 | /* These are macros used to check flags encoded in r_addend. |
| 9028 | They are only used by nds32_elf_relax_section (). */ |
| 9029 | #define GET_SEQ_LEN(addend) ((addend) & 0x000000ff) |
| 9030 | #define IS_1ST_CONVERT(addend) ((addend) & 0x80000000) |
| 9031 | #define IS_OPTIMIZE(addend) ((addend) & 0x40000000) |
| 9032 | #define IS_16BIT_ON(addend) ((addend) & 0x20000000) |
| 9033 | |
| 9034 | /* Relax LONGCALL1 relocation for nds32_elf_relax_section. */ |
| 9035 | |
| 9036 | static bfd_boolean |
| 9037 | nds32_elf_relax_longcall1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9038 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9039 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9040 | Elf_Internal_Shdr *symtab_hdr) |
| 9041 | { |
| 9042 | /* There are 3 variations for LONGCALL1 |
| 9043 | case 4-4-2; 16-bit on, optimize off or optimize for space |
| 9044 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
| 9045 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9046 | jral5 ta ; |
| 9047 | |
| 9048 | case 4-4-4; 16-bit off, optimize don't care |
| 9049 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
| 9050 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9051 | jral ta ; |
| 9052 | |
| 9053 | case 4-4-4; 16-bit on, optimize for speed |
| 9054 | sethi ta, hi20(symbol) ; LONGCALL1/HI20 |
| 9055 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9056 | jral ta ; |
| 9057 | Check code for -mlong-calls output. */ |
| 9058 | |
| 9059 | /* Get the reloc for the address from which the register is |
| 9060 | being loaded. This reloc will tell us which function is |
| 9061 | actually being called. */ |
| 9062 | |
| 9063 | bfd_vma laddr; |
| 9064 | int seq_len; /* Original length of instruction sequence. */ |
| 9065 | uint32_t insn; |
| 9066 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; |
| 9067 | int pic_ext_target = 0; |
| 9068 | bfd_signed_vma foff; |
| 9069 | uint16_t insn16; |
| 9070 | |
| 9071 | irelend = internal_relocs + sec->reloc_count; |
| 9072 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 9073 | laddr = irel->r_offset; |
| 9074 | *insn_len = seq_len; |
| 9075 | |
| 9076 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9077 | R_NDS32_HI20_RELA, laddr); |
| 9078 | lo_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9079 | R_NDS32_LO12S0_ORI_RELA, |
| 9080 | laddr + 4); |
| 9081 | |
| 9082 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
| 9083 | { |
| 9084 | (*_bfd_error_handler) |
| 9085 | ("%B: warning: R_NDS32_LONGCALL1 points to unrecognized" |
| 9086 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9087 | return FALSE; |
| 9088 | } |
| 9089 | |
| 9090 | /* Get the value of the symbol referred to by the reloc. */ |
| 9091 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, |
| 9092 | &pic_ext_target); |
| 9093 | |
| 9094 | /* This condition only happened when symbol is undefined. */ |
| 9095 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 9096 | || foff >= CONSERVATIVE_24BIT_S1) |
| 9097 | return FALSE; |
| 9098 | |
| 9099 | /* Relax to: jal symbol; 25_PCREL */ |
| 9100 | /* For simplicity of coding, we are going to modify the section |
| 9101 | contents, the section relocs, and the BFD symbol table. We |
| 9102 | must tell the rest of the code not to free up this |
| 9103 | information. It would be possible to instead create a table |
| 9104 | of changes which have to be made, as is done in coff-mips.c; |
| 9105 | that would be more work, but would require less memory when |
| 9106 | the linker is run. */ |
| 9107 | |
| 9108 | /* Replace the long call with a jal. */ |
| 9109 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9110 | R_NDS32_25_PCREL_RELA); |
| 9111 | irel->r_addend = hi_irelfn->r_addend; |
| 9112 | |
| 9113 | /* We don't resolve this here but resolve it in relocate_section. */ |
| 9114 | insn = INSN_JAL; |
| 9115 | bfd_putb32 (insn, contents + irel->r_offset); |
| 9116 | |
| 9117 | hi_irelfn->r_info = |
| 9118 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); |
| 9119 | lo_irelfn->r_info = |
| 9120 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); |
| 9121 | *insn_len = 4; |
| 9122 | |
| 9123 | if (seq_len & 0x2) |
| 9124 | { |
| 9125 | insn16 = NDS32_NOP16; |
| 9126 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); |
| 9127 | lo_irelfn->r_info = |
| 9128 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); |
| 9129 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9130 | *insn_len += 2; |
| 9131 | } |
| 9132 | return TRUE; |
| 9133 | } |
| 9134 | |
| 9135 | #define CONVERT_CONDITION_CALL(insn) (((insn) & 0xffff0000) ^ 0x90000) |
| 9136 | /* Relax LONGCALL2 relocation for nds32_elf_relax_section. */ |
| 9137 | |
| 9138 | static bfd_boolean |
| 9139 | nds32_elf_relax_longcall2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9140 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9141 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9142 | Elf_Internal_Shdr *symtab_hdr) |
| 9143 | { |
| 9144 | /* bltz rt, .L1 ; LONGCALL2 |
| 9145 | jal symbol ; 25_PCREL |
| 9146 | .L1: */ |
| 9147 | |
| 9148 | /* Get the reloc for the address from which the register is |
| 9149 | being loaded. This reloc will tell us which function is |
| 9150 | actually being called. */ |
| 9151 | |
| 9152 | bfd_vma laddr; |
| 9153 | uint32_t insn; |
| 9154 | Elf_Internal_Rela *i1_irelfn, *cond_irelfn, *irelend; |
| 9155 | int pic_ext_target = 0; |
| 9156 | bfd_signed_vma foff; |
| 9157 | |
| 9158 | irelend = internal_relocs + sec->reloc_count; |
| 9159 | laddr = irel->r_offset; |
| 9160 | i1_irelfn = |
| 9161 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9162 | R_NDS32_25_PCREL_RELA, laddr + 4); |
| 9163 | |
| 9164 | if (i1_irelfn == irelend) |
| 9165 | { |
| 9166 | (*_bfd_error_handler) |
| 9167 | ("%B: warning: R_NDS32_LONGCALL2 points to unrecognized" |
| 9168 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9169 | return FALSE; |
| 9170 | } |
| 9171 | |
| 9172 | insn = bfd_getb32 (contents + laddr); |
| 9173 | |
| 9174 | /* Get the value of the symbol referred to by the reloc. */ |
| 9175 | foff = calculate_offset (abfd, sec, i1_irelfn, isymbuf, symtab_hdr, |
| 9176 | &pic_ext_target); |
| 9177 | |
| 9178 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
| 9179 | || foff >= CONSERVATIVE_16BIT_S1) |
| 9180 | return FALSE; |
| 9181 | |
| 9182 | /* Relax to bgezal rt, label ; 17_PCREL |
| 9183 | or bltzal rt, label ; 17_PCREL */ |
| 9184 | |
| 9185 | /* Convert to complimentary conditional call. */ |
| 9186 | insn = CONVERT_CONDITION_CALL (insn); |
| 9187 | |
| 9188 | /* For simplicity of coding, we are going to modify the section |
| 9189 | contents, the section relocs, and the BFD symbol table. We |
| 9190 | must tell the rest of the code not to free up this |
| 9191 | information. It would be possible to instead create a table |
| 9192 | of changes which have to be made, as is done in coff-mips.c; |
| 9193 | that would be more work, but would require less memory when |
| 9194 | the linker is run. */ |
| 9195 | |
| 9196 | /* Clean unnessary relocations. */ |
| 9197 | i1_irelfn->r_info = |
| 9198 | ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), R_NDS32_NONE); |
| 9199 | cond_irelfn = |
| 9200 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9201 | R_NDS32_17_PCREL_RELA, laddr); |
| 9202 | if (cond_irelfn != irelend) |
| 9203 | cond_irelfn->r_info = |
| 9204 | ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), R_NDS32_NONE); |
| 9205 | |
| 9206 | /* Replace the long call with a bgezal. */ |
| 9207 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i1_irelfn->r_info), |
| 9208 | R_NDS32_17_PCREL_RELA); |
| 9209 | irel->r_addend = i1_irelfn->r_addend; |
| 9210 | |
| 9211 | bfd_putb32 (insn, contents + irel->r_offset); |
| 9212 | |
| 9213 | *insn_len = 4; |
| 9214 | return TRUE; |
| 9215 | } |
| 9216 | |
| 9217 | /* Relax LONGCALL3 relocation for nds32_elf_relax_section. */ |
| 9218 | |
| 9219 | static bfd_boolean |
| 9220 | nds32_elf_relax_longcall3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9221 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9222 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9223 | Elf_Internal_Shdr *symtab_hdr) |
| 9224 | { |
| 9225 | /* There are 3 variations for LONGCALL3 |
| 9226 | case 4-4-4-2; 16-bit on, optimize off or optimize for space |
| 9227 | bltz rt, $1 ; LONGCALL3 |
| 9228 | sethi ta, hi20(symbol) ; HI20 |
| 9229 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9230 | jral5 ta ; |
| 9231 | $1 |
| 9232 | |
| 9233 | case 4-4-4-4; 16-bit off, optimize don't care |
| 9234 | bltz rt, $1 ; LONGCALL3 |
| 9235 | sethi ta, hi20(symbol) ; HI20 |
| 9236 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9237 | jral ta ; |
| 9238 | $1 |
| 9239 | |
| 9240 | case 4-4-4-4; 16-bit on, optimize for speed |
| 9241 | bltz rt, $1 ; LONGCALL3 |
| 9242 | sethi ta, hi20(symbol) ; HI20 |
| 9243 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9244 | jral ta ; |
| 9245 | $1 */ |
| 9246 | |
| 9247 | /* Get the reloc for the address from which the register is |
| 9248 | being loaded. This reloc will tell us which function is |
| 9249 | actually being called. */ |
| 9250 | |
| 9251 | bfd_vma laddr; |
| 9252 | int seq_len; /* Original length of instruction sequence. */ |
| 9253 | uint32_t insn; |
| 9254 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; |
| 9255 | int pic_ext_target = 0; |
| 9256 | bfd_signed_vma foff; |
| 9257 | uint16_t insn16; |
| 9258 | |
| 9259 | irelend = internal_relocs + sec->reloc_count; |
| 9260 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 9261 | laddr = irel->r_offset; |
| 9262 | *insn_len = seq_len; |
| 9263 | |
| 9264 | hi_irelfn = |
| 9265 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9266 | R_NDS32_HI20_RELA, laddr + 4); |
| 9267 | lo_irelfn = |
| 9268 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9269 | R_NDS32_LO12S0_ORI_RELA, laddr + 8); |
| 9270 | |
| 9271 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
| 9272 | { |
| 9273 | (*_bfd_error_handler) |
| 9274 | ("%B: warning: R_NDS32_LONGCALL3 points to unrecognized" |
| 9275 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9276 | return FALSE; |
| 9277 | } |
| 9278 | |
| 9279 | /* Get the value of the symbol referred to by the reloc. */ |
| 9280 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, |
| 9281 | &pic_ext_target); |
| 9282 | |
| 9283 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 9284 | || foff >= CONSERVATIVE_24BIT_S1) |
| 9285 | return FALSE; |
| 9286 | |
| 9287 | insn = bfd_getb32 (contents + laddr); |
| 9288 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) |
| 9289 | { |
| 9290 | /* Relax to bgezal rt, label ; 17_PCREL |
| 9291 | or bltzal rt, label ; 17_PCREL */ |
| 9292 | |
| 9293 | /* Convert to complimentary conditional call. */ |
| 9294 | insn = CONVERT_CONDITION_CALL (insn); |
| 9295 | bfd_putb32 (insn, contents + irel->r_offset); |
| 9296 | |
| 9297 | *insn_len = 4; |
| 9298 | irel->r_info = |
| 9299 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); |
| 9300 | hi_irelfn->r_info = |
| 9301 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); |
| 9302 | lo_irelfn->r_info = |
| 9303 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); |
| 9304 | |
| 9305 | cond_irelfn = |
| 9306 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9307 | R_NDS32_17_PCREL_RELA, laddr); |
| 9308 | if (cond_irelfn != irelend) |
| 9309 | { |
| 9310 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9311 | R_NDS32_17_PCREL_RELA); |
| 9312 | cond_irelfn->r_addend = hi_irelfn->r_addend; |
| 9313 | } |
| 9314 | |
| 9315 | if (seq_len & 0x2) |
| 9316 | { |
| 9317 | insn16 = NDS32_NOP16; |
| 9318 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); |
| 9319 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9320 | R_NDS32_INSN16); |
| 9321 | hi_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9322 | insn_len += 2; |
| 9323 | } |
| 9324 | } |
| 9325 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) |
| 9326 | { |
| 9327 | /* Relax to the following instruction sequence |
| 9328 | bltz rt, $1 ; LONGCALL2 |
| 9329 | jal symbol ; 25_PCREL |
| 9330 | $1 */ |
| 9331 | *insn_len = 8; |
| 9332 | insn = INSN_JAL; |
| 9333 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); |
| 9334 | |
| 9335 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9336 | R_NDS32_25_PCREL_RELA); |
| 9337 | irel->r_info = |
| 9338 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL2); |
| 9339 | |
| 9340 | lo_irelfn->r_info = |
| 9341 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); |
| 9342 | |
| 9343 | if (seq_len & 0x2) |
| 9344 | { |
| 9345 | insn16 = NDS32_NOP16; |
| 9346 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); |
| 9347 | lo_irelfn->r_info = |
| 9348 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_INSN16); |
| 9349 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9350 | insn_len += 2; |
| 9351 | } |
| 9352 | } |
| 9353 | return TRUE; |
| 9354 | } |
| 9355 | |
| 9356 | /* Relax LONGJUMP1 relocation for nds32_elf_relax_section. */ |
| 9357 | |
| 9358 | static bfd_boolean |
| 9359 | nds32_elf_relax_longjump1 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9360 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9361 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9362 | Elf_Internal_Shdr *symtab_hdr) |
| 9363 | { |
| 9364 | /* There are 3 variations for LONGJUMP1 |
| 9365 | case 4-4-2; 16-bit bit on, optimize off or optimize for space |
| 9366 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
| 9367 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9368 | jr5 ta ; |
| 9369 | |
| 9370 | case 4-4-4; 16-bit off, optimize don't care |
| 9371 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
| 9372 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9373 | jr ta ; |
| 9374 | |
| 9375 | case 4-4-4; 16-bit on, optimize for speed |
| 9376 | sethi ta, hi20(symbol) ; LONGJUMP1/HI20 |
| 9377 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9378 | jr ta ; */ |
| 9379 | |
| 9380 | /* Get the reloc for the address from which the register is |
| 9381 | being loaded. This reloc will tell us which function is |
| 9382 | actually being called. */ |
| 9383 | |
| 9384 | bfd_vma laddr; |
| 9385 | int seq_len; /* Original length of instruction sequence. */ |
| 9386 | int insn16_on; /* 16-bit on/off. */ |
| 9387 | uint32_t insn; |
| 9388 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *irelend; |
| 9389 | int pic_ext_target = 0; |
| 9390 | bfd_signed_vma foff; |
| 9391 | uint16_t insn16; |
| 9392 | unsigned long reloc; |
| 9393 | |
| 9394 | irelend = internal_relocs + sec->reloc_count; |
| 9395 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 9396 | laddr = irel->r_offset; |
| 9397 | *insn_len = seq_len; |
| 9398 | insn16_on = IS_16BIT_ON (irel->r_addend); |
| 9399 | |
| 9400 | hi_irelfn = |
| 9401 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9402 | R_NDS32_HI20_RELA, laddr); |
| 9403 | lo_irelfn = |
| 9404 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9405 | R_NDS32_LO12S0_ORI_RELA, laddr + 4); |
| 9406 | if (hi_irelfn == irelend || lo_irelfn == irelend) |
| 9407 | { |
| 9408 | (*_bfd_error_handler) |
| 9409 | ("%B: warning: R_NDS32_LONGJUMP1 points to unrecognized" |
| 9410 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9411 | return FALSE; |
| 9412 | } |
| 9413 | |
| 9414 | /* Get the value of the symbol referred to by the reloc. */ |
| 9415 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, |
| 9416 | &pic_ext_target); |
| 9417 | |
| 9418 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
| 9419 | || foff < -CONSERVATIVE_24BIT_S1) |
| 9420 | return FALSE; |
| 9421 | |
| 9422 | if (insn16_on && foff >= -ACCURATE_8BIT_S1 |
| 9423 | && foff < ACCURATE_8BIT_S1 && (seq_len & 0x2)) |
| 9424 | { |
| 9425 | /* j8 label */ |
| 9426 | /* 16-bit on, but not optimized for speed. */ |
| 9427 | reloc = R_NDS32_9_PCREL_RELA; |
| 9428 | insn16 = INSN_J8; |
| 9429 | bfd_putb16 (insn16, contents + irel->r_offset); |
| 9430 | *insn_len = 2; |
| 9431 | irel->r_info = |
| 9432 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 9433 | } |
| 9434 | else |
| 9435 | { |
| 9436 | /* j label */ |
| 9437 | reloc = R_NDS32_25_PCREL_RELA; |
| 9438 | insn = INSN_J; |
| 9439 | bfd_putb32 (insn, contents + irel->r_offset); |
| 9440 | *insn_len = 4; |
| 9441 | irel->r_info = |
| 9442 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_INSN16); |
| 9443 | irel->r_addend = 0; |
| 9444 | } |
| 9445 | |
| 9446 | hi_irelfn->r_info = |
| 9447 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); |
| 9448 | lo_irelfn->r_info = |
| 9449 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), R_NDS32_NONE); |
| 9450 | |
| 9451 | if ((seq_len & 0x2) && ((*insn_len & 2) == 0)) |
| 9452 | { |
| 9453 | insn16 = NDS32_NOP16; |
| 9454 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); |
| 9455 | lo_irelfn->r_info = |
| 9456 | ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), |
| 9457 | R_NDS32_INSN16); |
| 9458 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9459 | *insn_len += 2; |
| 9460 | } |
| 9461 | return TRUE; |
| 9462 | } |
| 9463 | |
| 9464 | /* Revert condition branch. This function does not check if the input |
| 9465 | instruction is condition branch or not. */ |
| 9466 | |
| 9467 | static void |
| 9468 | nds32_elf_convert_branch (uint16_t insn16, uint32_t insn, |
| 9469 | uint16_t *re_insn16, uint32_t *re_insn) |
| 9470 | { |
| 9471 | uint32_t comp_insn = 0; |
| 9472 | uint16_t comp_insn16 = 0; |
| 9473 | |
| 9474 | if (insn) |
| 9475 | { |
| 9476 | if (N32_OP6 (insn) == N32_OP6_BR1) |
| 9477 | { |
| 9478 | /* beqs label. */ |
| 9479 | comp_insn = (insn ^ 0x4000) & 0xffffc000; |
| 9480 | if (N32_IS_RT3 (insn) && N32_RA5 (insn) == REG_R5) |
| 9481 | { |
| 9482 | /* Insn can be contracted to 16-bit implied r5. */ |
| 9483 | comp_insn16 = |
| 9484 | (comp_insn & 0x4000) ? INSN_BNES38 : INSN_BEQS38; |
| 9485 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; |
| 9486 | } |
| 9487 | } |
| 9488 | else if (N32_OP6 (insn) == N32_OP6_BR3) |
| 9489 | { |
| 9490 | /* bnec $ta, imm11, label. */ |
| 9491 | comp_insn = (insn ^ 0x80000) & 0xffffff00; |
| 9492 | } |
| 9493 | else |
| 9494 | { |
| 9495 | comp_insn = (insn ^ 0x10000) & 0xffffc000; |
| 9496 | if (N32_BR2_SUB (insn) == N32_BR2_BEQZ |
| 9497 | || N32_BR2_SUB (insn) == N32_BR2_BNEZ) |
| 9498 | { |
| 9499 | if (N32_IS_RT3 (insn)) |
| 9500 | { |
| 9501 | /* Insn can be contracted to 16-bit. */ |
| 9502 | comp_insn16 = |
| 9503 | (comp_insn & 0x10000) ? INSN_BNEZ38 : INSN_BEQZ38; |
| 9504 | comp_insn16 |= (N32_RT5 (insn) & 0x7) << 8; |
| 9505 | } |
| 9506 | else if (N32_RT5 (insn) == REG_R15) |
| 9507 | { |
| 9508 | /* Insn can be contracted to 16-bit. */ |
| 9509 | comp_insn16 = |
| 9510 | (comp_insn & 0x10000) ? INSN_BNES38 : INSN_BEQS38; |
| 9511 | } |
| 9512 | } |
| 9513 | } |
| 9514 | } |
| 9515 | else |
| 9516 | { |
| 9517 | switch ((insn16 & 0xf000) >> 12) |
| 9518 | { |
| 9519 | case 0xc: |
| 9520 | /* beqz38 or bnez38 */ |
| 9521 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; |
| 9522 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNEZ : INSN_BEQZ; |
| 9523 | comp_insn |= ((comp_insn16 & 0x0700) >> 8) << 20; |
| 9524 | break; |
| 9525 | |
| 9526 | case 0xd: |
| 9527 | /* beqs38 or bnes38 */ |
| 9528 | comp_insn16 = (insn16 ^ 0x0800) & 0xff00; |
| 9529 | comp_insn = (comp_insn16 & 0x0800) ? INSN_BNE : INSN_BEQ; |
| 9530 | comp_insn |= (((comp_insn16 & 0x0700) >> 8) << 20) |
| 9531 | | (REG_R5 << 15); |
| 9532 | break; |
| 9533 | |
| 9534 | case 0xe: |
| 9535 | /* beqzS8 or bnezS8 */ |
| 9536 | comp_insn16 = (insn16 ^ 0x0100) & 0xff00; |
| 9537 | comp_insn = (comp_insn16 & 0x0100) ? INSN_BNEZ : INSN_BEQZ; |
| 9538 | comp_insn |= REG_R15 << 20; |
| 9539 | break; |
| 9540 | |
| 9541 | default: |
| 9542 | break; |
| 9543 | } |
| 9544 | } |
| 9545 | if (comp_insn && re_insn) |
| 9546 | *re_insn = comp_insn; |
| 9547 | if (comp_insn16 && re_insn16) |
| 9548 | *re_insn16 = comp_insn16; |
| 9549 | } |
| 9550 | |
| 9551 | /* Relax LONGJUMP2 relocation for nds32_elf_relax_section. */ |
| 9552 | |
| 9553 | static bfd_boolean |
| 9554 | nds32_elf_relax_longjump2 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9555 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9556 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9557 | Elf_Internal_Shdr *symtab_hdr) |
| 9558 | { |
| 9559 | /* There are 3 variations for LONGJUMP2 |
| 9560 | case 2-4; 1st insn convertible, 16-bit on, |
| 9561 | optimize off or optimize for space |
| 9562 | bnes38 rt, ra, $1 ; LONGJUMP2 |
| 9563 | j label ; 25_PCREL |
| 9564 | $1: |
| 9565 | |
| 9566 | case 4-4; 1st insn not convertible |
| 9567 | bne rt, ra, $1 ; LONGJUMP2 |
| 9568 | j label ; 25_PCREL |
| 9569 | $1: |
| 9570 | |
| 9571 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed |
| 9572 | bne rt, ra, $1 ; LONGJUMP2 |
| 9573 | j label ; 25_PCREL |
| 9574 | $1: */ |
| 9575 | |
| 9576 | /* Get the reloc for the address from which the register is |
| 9577 | being loaded. This reloc will tell us which function is |
| 9578 | actually being called. */ |
| 9579 | |
| 9580 | bfd_vma laddr; |
| 9581 | int seq_len; /* Original length of instruction sequence. */ |
| 9582 | Elf_Internal_Rela *i2_irelfn, *cond_irelfn, *irelend; |
| 9583 | int pic_ext_target = 0, first_size; |
| 9584 | unsigned int i; |
| 9585 | bfd_signed_vma foff; |
| 9586 | uint32_t insn, re_insn = 0; |
| 9587 | uint16_t insn16, re_insn16 = 0; |
| 9588 | unsigned long reloc, cond_reloc; |
| 9589 | |
| 9590 | enum elf_nds32_reloc_type checked_types[] = |
| 9591 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; |
| 9592 | |
| 9593 | irelend = internal_relocs + sec->reloc_count; |
| 9594 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 9595 | laddr = irel->r_offset; |
| 9596 | *insn_len = seq_len; |
| 9597 | first_size = (seq_len == 6) ? 2 : 4; |
| 9598 | |
| 9599 | i2_irelfn = |
| 9600 | find_relocs_at_address_addr (irel, internal_relocs, |
| 9601 | irelend, R_NDS32_25_PCREL_RELA, |
| 9602 | laddr + first_size); |
| 9603 | |
| 9604 | for (i = 0; i < sizeof (checked_types) / sizeof(checked_types[0]); i++) |
| 9605 | { |
| 9606 | cond_irelfn = |
| 9607 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9608 | checked_types[i], laddr); |
| 9609 | if (cond_irelfn != irelend) |
| 9610 | break; |
| 9611 | } |
| 9612 | |
| 9613 | if (i2_irelfn == irelend || cond_irelfn == irelend) |
| 9614 | { |
| 9615 | (*_bfd_error_handler) |
| 9616 | ("%B: warning: R_NDS32_LONGJUMP2 points to unrecognized" |
| 9617 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9618 | return FALSE; |
| 9619 | } |
| 9620 | |
| 9621 | /* Get the value of the symbol referred to by the reloc. */ |
| 9622 | foff = |
| 9623 | calculate_offset (abfd, sec, i2_irelfn, isymbuf, symtab_hdr, |
| 9624 | &pic_ext_target); |
| 9625 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
| 9626 | || foff >= CONSERVATIVE_16BIT_S1) |
| 9627 | return FALSE; |
| 9628 | |
| 9629 | /* Get the all corresponding instructions. */ |
| 9630 | if (first_size == 4) |
| 9631 | { |
| 9632 | insn = bfd_getb32 (contents + laddr); |
| 9633 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); |
| 9634 | } |
| 9635 | else |
| 9636 | { |
| 9637 | insn16 = bfd_getb16 (contents + laddr); |
| 9638 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); |
| 9639 | } |
| 9640 | |
| 9641 | if (re_insn16 && foff >= -(ACCURATE_8BIT_S1 - first_size) |
| 9642 | && foff < ACCURATE_8BIT_S1 - first_size) |
| 9643 | { |
| 9644 | if (first_size == 4) |
| 9645 | { |
| 9646 | /* Don't convert it to 16-bit now, keep this as relaxable for |
| 9647 | ``label reloc; INSN16''. */ |
| 9648 | |
| 9649 | /* Save comp_insn32 to buffer. */ |
| 9650 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9651 | *insn_len = 4; |
| 9652 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? |
| 9653 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; |
| 9654 | cond_reloc = R_NDS32_INSN16; |
| 9655 | } |
| 9656 | else |
| 9657 | { |
| 9658 | bfd_putb16 (re_insn16, contents + irel->r_offset); |
| 9659 | *insn_len = 2; |
| 9660 | reloc = R_NDS32_9_PCREL_RELA; |
| 9661 | cond_reloc = R_NDS32_NONE; |
| 9662 | } |
| 9663 | } |
| 9664 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 |
| 9665 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) |
| 9666 | && foff < ACCURATE_14BIT_S1 - first_size)) |
| 9667 | { |
| 9668 | /* beqs label ; 15_PCREL */ |
| 9669 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9670 | *insn_len = 4; |
| 9671 | reloc = R_NDS32_15_PCREL_RELA; |
| 9672 | cond_reloc = R_NDS32_NONE; |
| 9673 | } |
| 9674 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 |
| 9675 | && foff >= -CONSERVATIVE_16BIT_S1 |
| 9676 | && foff < CONSERVATIVE_16BIT_S1) |
| 9677 | { |
| 9678 | /* beqz label ; 17_PCREL */ |
| 9679 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9680 | *insn_len = 4; |
| 9681 | reloc = R_NDS32_17_PCREL_RELA; |
| 9682 | cond_reloc = R_NDS32_NONE; |
| 9683 | } |
| 9684 | else |
| 9685 | return FALSE; |
| 9686 | |
| 9687 | /* Set all relocations. */ |
| 9688 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), reloc); |
| 9689 | irel->r_addend = i2_irelfn->r_addend; |
| 9690 | |
| 9691 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), |
| 9692 | cond_reloc); |
| 9693 | cond_irelfn->r_addend = 0; |
| 9694 | |
| 9695 | if ((seq_len ^ *insn_len ) & 0x2) |
| 9696 | { |
| 9697 | insn16 = NDS32_NOP16; |
| 9698 | bfd_putb16 (insn16, contents + irel->r_offset + 4); |
| 9699 | i2_irelfn->r_offset = 4; |
| 9700 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), |
| 9701 | R_NDS32_INSN16); |
| 9702 | i2_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9703 | *insn_len += 2; |
| 9704 | } |
| 9705 | else |
| 9706 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (i2_irelfn->r_info), |
| 9707 | R_NDS32_NONE); |
| 9708 | return TRUE; |
| 9709 | } |
| 9710 | |
| 9711 | /* Relax LONGJUMP3 relocation for nds32_elf_relax_section. */ |
| 9712 | |
| 9713 | static bfd_boolean |
| 9714 | nds32_elf_relax_longjump3 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9715 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9716 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9717 | Elf_Internal_Shdr *symtab_hdr) |
| 9718 | { |
| 9719 | /* There are 5 variations for LONGJUMP3 |
| 9720 | case 1: 2-4-4-2; 1st insn convertible, 16-bit on, |
| 9721 | optimize off or optimize for space |
| 9722 | bnes38 rt, ra, $1 ; LONGJUMP3 |
| 9723 | sethi ta, hi20(symbol) ; HI20 |
| 9724 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9725 | jr5 ta ; |
| 9726 | $1: ; |
| 9727 | |
| 9728 | case 2: 2-4-4-2; 1st insn convertible, 16-bit on, optimize for speed |
| 9729 | bnes38 rt, ra, $1 ; LONGJUMP3 |
| 9730 | sethi ta, hi20(symbol) ; HI20 |
| 9731 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9732 | jr5 ta ; |
| 9733 | $1: ; LABEL |
| 9734 | |
| 9735 | case 3: 4-4-4-2; 1st insn not convertible, 16-bit on, |
| 9736 | optimize off or optimize for space |
| 9737 | bne rt, ra, $1 ; LONGJUMP3 |
| 9738 | sethi ta, hi20(symbol) ; HI20 |
| 9739 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9740 | jr5 ta ; |
| 9741 | $1: ; |
| 9742 | |
| 9743 | case 4: 4-4-4-4; 1st insn don't care, 16-bit off, optimize don't care |
| 9744 | 16-bit off if no INSN16 |
| 9745 | bne rt, ra, $1 ; LONGJUMP3 |
| 9746 | sethi ta, hi20(symbol) ; HI20 |
| 9747 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9748 | jr ta ; |
| 9749 | $1: ; |
| 9750 | |
| 9751 | case 5: 4-4-4-4; 1st insn not convertible, 16-bit on, optimize for speed |
| 9752 | 16-bit off if no INSN16 |
| 9753 | bne rt, ra, $1 ; LONGJUMP3 |
| 9754 | sethi ta, hi20(symbol) ; HI20 |
| 9755 | ori ta, ta, lo12(symbol) ; LO12S0 |
| 9756 | jr ta ; |
| 9757 | $1: ; LABEL */ |
| 9758 | |
| 9759 | /* Get the reloc for the address from which the register is |
| 9760 | being loaded. This reloc will tell us which function is |
| 9761 | actually being called. */ |
| 9762 | enum elf_nds32_reloc_type checked_types[] = |
| 9763 | { R_NDS32_15_PCREL_RELA, R_NDS32_9_PCREL_RELA }; |
| 9764 | |
| 9765 | int reloc_off = 0, cond_removed = 0, convertible; |
| 9766 | bfd_vma laddr; |
| 9767 | int seq_len; /* Original length of instruction sequence. */ |
| 9768 | Elf_Internal_Rela *hi_irelfn, *lo_irelfn, *cond_irelfn, *irelend; |
| 9769 | int pic_ext_target = 0, first_size; |
| 9770 | unsigned int i; |
| 9771 | bfd_signed_vma foff; |
| 9772 | uint32_t insn, re_insn = 0; |
| 9773 | uint16_t insn16, re_insn16 = 0; |
| 9774 | unsigned long reloc, cond_reloc; |
| 9775 | |
| 9776 | irelend = internal_relocs + sec->reloc_count; |
| 9777 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 9778 | laddr = irel->r_offset; |
| 9779 | *insn_len = seq_len; |
| 9780 | |
| 9781 | convertible = IS_1ST_CONVERT (irel->r_addend); |
| 9782 | |
| 9783 | if (convertible) |
| 9784 | first_size = 2; |
| 9785 | else |
| 9786 | first_size = 4; |
| 9787 | |
| 9788 | /* Get all needed relocations. */ |
| 9789 | hi_irelfn = |
| 9790 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9791 | R_NDS32_HI20_RELA, laddr + first_size); |
| 9792 | lo_irelfn = |
| 9793 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9794 | R_NDS32_LO12S0_ORI_RELA, |
| 9795 | laddr + first_size + 4); |
| 9796 | |
| 9797 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
| 9798 | { |
| 9799 | cond_irelfn = |
| 9800 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9801 | checked_types[i], laddr); |
| 9802 | if (cond_irelfn != irelend) |
| 9803 | break; |
| 9804 | } |
| 9805 | |
| 9806 | if (hi_irelfn == irelend || lo_irelfn == irelend || cond_irelfn == irelend) |
| 9807 | { |
| 9808 | (*_bfd_error_handler) |
| 9809 | ("%B: warning: R_NDS32_LONGJUMP3 points to unrecognized" |
| 9810 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9811 | return FALSE; |
| 9812 | } |
| 9813 | |
| 9814 | /* Get the value of the symbol referred to by the reloc. */ |
| 9815 | foff = calculate_offset (abfd, sec, hi_irelfn, isymbuf, symtab_hdr, |
| 9816 | &pic_ext_target); |
| 9817 | |
| 9818 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 9819 | || foff >= CONSERVATIVE_24BIT_S1) |
| 9820 | return FALSE; |
| 9821 | |
| 9822 | /* Get the all corresponding instructions. */ |
| 9823 | if (first_size == 4) |
| 9824 | { |
| 9825 | insn = bfd_getb32 (contents + laddr); |
| 9826 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); |
| 9827 | } |
| 9828 | else |
| 9829 | { |
| 9830 | insn16 = bfd_getb16 (contents + laddr); |
| 9831 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); |
| 9832 | } |
| 9833 | |
| 9834 | /* For simplicity of coding, we are going to modify the section |
| 9835 | contents, the section relocs, and the BFD symbol table. We |
| 9836 | must tell the rest of the code not to free up this |
| 9837 | information. It would be possible to instead create a table |
| 9838 | of changes which have to be made, as is done in coff-mips.c; |
| 9839 | that would be more work, but would require less memory when |
| 9840 | the linker is run. */ |
| 9841 | |
| 9842 | if (re_insn16 && foff >= -ACCURATE_8BIT_S1 - first_size |
| 9843 | && foff < ACCURATE_8BIT_S1 - first_size) |
| 9844 | { |
| 9845 | if (!(seq_len & 0x2)) |
| 9846 | { |
| 9847 | /* Don't convert it to 16-bit now, keep this as relaxable |
| 9848 | for ``label reloc; INSN1a''6. */ |
| 9849 | /* Save comp_insn32 to buffer. */ |
| 9850 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9851 | *insn_len = 4; |
| 9852 | reloc = (N32_OP6 (re_insn) == N32_OP6_BR1) ? |
| 9853 | R_NDS32_15_PCREL_RELA : R_NDS32_17_PCREL_RELA; |
| 9854 | cond_reloc = R_NDS32_INSN16; |
| 9855 | } |
| 9856 | else |
| 9857 | { |
| 9858 | /* Not optimize for speed; convert sequence to 16-bit. */ |
| 9859 | /* Save comp_insn16 to buffer. */ |
| 9860 | bfd_putb16 (re_insn16, contents + irel->r_offset); |
| 9861 | *insn_len = 2; |
| 9862 | reloc = R_NDS32_9_PCREL_RELA; |
| 9863 | cond_reloc = R_NDS32_NONE; |
| 9864 | } |
| 9865 | cond_removed = 1; |
| 9866 | } |
| 9867 | else if (N32_OP6 (re_insn) == N32_OP6_BR1 |
| 9868 | && (foff >= -(ACCURATE_14BIT_S1 - first_size) |
| 9869 | && foff < ACCURATE_14BIT_S1 - first_size)) |
| 9870 | { |
| 9871 | /* beqs label ; 15_PCREL */ |
| 9872 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9873 | *insn_len = 4; |
| 9874 | reloc = R_NDS32_15_PCREL_RELA; |
| 9875 | cond_reloc = R_NDS32_NONE; |
| 9876 | cond_removed = 1; |
| 9877 | } |
| 9878 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 |
| 9879 | && foff >= -CONSERVATIVE_16BIT_S1 |
| 9880 | && foff < CONSERVATIVE_16BIT_S1) |
| 9881 | { |
| 9882 | /* beqz label ; 17_PCREL */ |
| 9883 | bfd_putb32 (re_insn, contents + irel->r_offset); |
| 9884 | *insn_len = 4; |
| 9885 | reloc = R_NDS32_17_PCREL_RELA; |
| 9886 | cond_reloc = R_NDS32_NONE; |
| 9887 | cond_removed = 1; |
| 9888 | } |
| 9889 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off |
| 9890 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) |
| 9891 | { |
| 9892 | /* Relax to one of the following 3 variations |
| 9893 | |
| 9894 | case 2-4; 1st insn convertible, 16-bit on, optimize off or optimize |
| 9895 | for space |
| 9896 | bnes38 rt, $1 ; LONGJUMP2 |
| 9897 | j label ; 25_PCREL |
| 9898 | $1 |
| 9899 | |
| 9900 | case 4-4; 1st insn not convertible, others don't care |
| 9901 | bne rt, ra, $1 ; LONGJUMP2 |
| 9902 | j label ; 25_PCREL |
| 9903 | $1 |
| 9904 | |
| 9905 | case 4-4; 1st insn convertible, 16-bit on, optimize for speed |
| 9906 | bne rt, ra, $1 ; LONGJUMP2 |
| 9907 | j label ; 25_PCREL |
| 9908 | $1 */ |
| 9909 | |
| 9910 | /* Offset for first instruction. */ |
| 9911 | |
| 9912 | /* Use j label as second instruction. */ |
| 9913 | *insn_len = 4 + first_size; |
| 9914 | insn = INSN_J; |
| 9915 | bfd_putb32 (insn, contents + hi_irelfn->r_offset); |
| 9916 | reloc = R_NDS32_LONGJUMP2; |
| 9917 | cond_reloc = R_NDS32_25_PLTREL; |
| 9918 | } |
| 9919 | else |
| 9920 | return FALSE; |
| 9921 | |
| 9922 | if (cond_removed == 1) |
| 9923 | { |
| 9924 | /* Set all relocations. */ |
| 9925 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), reloc); |
| 9926 | irel->r_addend = hi_irelfn->r_addend; |
| 9927 | |
| 9928 | cond_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irelfn->r_info), |
| 9929 | cond_reloc); |
| 9930 | cond_irelfn->r_addend = 0; |
| 9931 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9932 | R_NDS32_NONE); |
| 9933 | } |
| 9934 | else |
| 9935 | { |
| 9936 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); |
| 9937 | irel->r_addend = irel->r_addend; |
| 9938 | hi_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), |
| 9939 | cond_reloc); |
| 9940 | } |
| 9941 | |
| 9942 | if ((seq_len ^ *insn_len ) & 0x2) |
| 9943 | { |
| 9944 | insn16 = NDS32_NOP16; |
| 9945 | bfd_putb16 (insn16, contents + irel->r_offset + *insn_len); |
| 9946 | lo_irelfn->r_offset = *insn_len; |
| 9947 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), |
| 9948 | R_NDS32_INSN16); |
| 9949 | lo_irelfn->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 9950 | *insn_len += 2; |
| 9951 | } |
| 9952 | else |
| 9953 | lo_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (lo_irelfn->r_info), |
| 9954 | R_NDS32_NONE); |
| 9955 | return TRUE; |
| 9956 | } |
| 9957 | |
| 9958 | /* Relax LONGCALL4 relocation for nds32_elf_relax_section. */ |
| 9959 | |
| 9960 | static bfd_boolean |
| 9961 | nds32_elf_relax_longcall4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 9962 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 9963 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 9964 | Elf_Internal_Shdr *symtab_hdr) |
| 9965 | { |
| 9966 | /* The pattern for LONGCALL4. Support for function cse. |
| 9967 | sethi ta, hi20(symbol) ; LONGCALL4/HI20 |
| 9968 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR |
| 9969 | jral ta ; PTR_RES/EMPTY/INSN16 */ |
| 9970 | |
| 9971 | bfd_vma laddr; |
| 9972 | uint32_t insn; |
| 9973 | Elf_Internal_Rela *hi_irel, *ptr_irel, *insn_irel, *em_irel, *call_irel; |
| 9974 | Elf_Internal_Rela *irelend; |
| 9975 | int pic_ext_target = 0; |
| 9976 | bfd_signed_vma foff; |
| 9977 | |
| 9978 | irelend = internal_relocs + sec->reloc_count; |
| 9979 | laddr = irel->r_offset; |
| 9980 | |
| 9981 | /* Get the reloc for the address from which the register is |
| 9982 | being loaded. This reloc will tell us which function is |
| 9983 | actually being called. */ |
| 9984 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 9985 | R_NDS32_HI20_RELA, laddr); |
| 9986 | |
| 9987 | if (hi_irel == irelend) |
| 9988 | { |
| 9989 | (*_bfd_error_handler) |
| 9990 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" |
| 9991 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 9992 | return FALSE; |
| 9993 | } |
| 9994 | |
| 9995 | /* Get the value of the symbol referred to by the reloc. */ |
| 9996 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, |
| 9997 | &pic_ext_target); |
| 9998 | |
| 9999 | /* This condition only happened when symbol is undefined. */ |
| 10000 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 10001 | || foff >= CONSERVATIVE_24BIT_S1) |
| 10002 | return FALSE; |
| 10003 | |
| 10004 | /* Relax to: jal symbol; 25_PCREL */ |
| 10005 | /* For simplicity of coding, we are going to modify the section |
| 10006 | contents, the section relocs, and the BFD symbol table. We |
| 10007 | must tell the rest of the code not to free up this |
| 10008 | information. It would be possible to instead create a table |
| 10009 | of changes which have to be made, as is done in coff-mips.c; |
| 10010 | that would be more work, but would require less memory when |
| 10011 | the linker is run. */ |
| 10012 | |
| 10013 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10014 | R_NDS32_PTR_RESOLVED, irel->r_addend); |
| 10015 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10016 | R_NDS32_EMPTY, irel->r_addend); |
| 10017 | |
| 10018 | if (ptr_irel == irelend || em_irel == irelend) |
| 10019 | { |
| 10020 | (*_bfd_error_handler) |
| 10021 | ("%B: warning: R_NDS32_LONGCALL4 points to unrecognized" |
| 10022 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10023 | return FALSE; |
| 10024 | } |
| 10025 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ |
| 10026 | insn = bfd_getb32 (contents + irel->r_addend); |
| 10027 | if (insn & 0x80000000) |
| 10028 | return FALSE; |
| 10029 | |
| 10030 | /* Replace the long call with a jal. */ |
| 10031 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), |
| 10032 | R_NDS32_25_PCREL_RELA); |
| 10033 | ptr_irel->r_addend = 1; |
| 10034 | |
| 10035 | /* We don't resolve this here but resolve it in relocate_section. */ |
| 10036 | insn = INSN_JAL; |
| 10037 | bfd_putb32 (insn, contents + em_irel->r_offset); |
| 10038 | |
| 10039 | irel->r_info = |
| 10040 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10041 | |
| 10042 | /* If there is function cse, HI20 can not remove now. */ |
| 10043 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10044 | R_NDS32_LONGCALL4, laddr); |
| 10045 | if (call_irel == irelend) |
| 10046 | { |
| 10047 | *insn_len = 0; |
| 10048 | hi_irel->r_info = |
| 10049 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); |
| 10050 | } |
| 10051 | |
| 10052 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10053 | R_NDS32_INSN16, irel->r_addend); |
| 10054 | if (insn_irel != irelend) |
| 10055 | insn_irel->r_info = |
| 10056 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10057 | |
| 10058 | return TRUE; |
| 10059 | } |
| 10060 | |
| 10061 | /* Relax LONGCALL5 relocation for nds32_elf_relax_section. */ |
| 10062 | |
| 10063 | static bfd_boolean |
| 10064 | nds32_elf_relax_longcall5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10065 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10066 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 10067 | Elf_Internal_Shdr *symtab_hdr) |
| 10068 | { |
| 10069 | /* The pattern for LONGCALL5. |
| 10070 | bltz rt, .L1 ; LONGCALL5/17_PCREL |
| 10071 | jal symbol ; 25_PCREL |
| 10072 | .L1: */ |
| 10073 | |
| 10074 | bfd_vma laddr; |
| 10075 | uint32_t insn; |
| 10076 | Elf_Internal_Rela *cond_irel, *irelend; |
| 10077 | int pic_ext_target = 0; |
| 10078 | bfd_signed_vma foff; |
| 10079 | |
| 10080 | irelend = internal_relocs + sec->reloc_count; |
| 10081 | laddr = irel->r_offset; |
| 10082 | insn = bfd_getb32 (contents + laddr); |
| 10083 | |
| 10084 | /* Get the reloc for the address from which the register is |
| 10085 | being loaded. This reloc will tell us which function is |
| 10086 | actually being called. */ |
| 10087 | cond_irel = |
| 10088 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10089 | R_NDS32_25_PCREL_RELA, irel->r_addend); |
| 10090 | if (cond_irel == irelend) |
| 10091 | { |
| 10092 | (*_bfd_error_handler) |
| 10093 | ("%B: warning: R_NDS32_LONGCALL5 points to unrecognized" |
| 10094 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10095 | return FALSE; |
| 10096 | } |
| 10097 | |
| 10098 | /* Get the value of the symbol referred to by the reloc. */ |
| 10099 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, |
| 10100 | &pic_ext_target); |
| 10101 | |
| 10102 | if (foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
| 10103 | || foff >= CONSERVATIVE_16BIT_S1) |
| 10104 | return FALSE; |
| 10105 | |
| 10106 | /* Relax to bgezal rt, label ; 17_PCREL |
| 10107 | or bltzal rt, label ; 17_PCREL */ |
| 10108 | |
| 10109 | /* Convert to complimentary conditional call. */ |
| 10110 | insn = CONVERT_CONDITION_CALL (insn); |
| 10111 | |
| 10112 | /* For simplicity of coding, we are going to modify the section |
| 10113 | contents, the section relocs, and the BFD symbol table. We |
| 10114 | must tell the rest of the code not to free up this |
| 10115 | information. It would be possible to instead create a table |
| 10116 | of changes which have to be made, as is done in coff-mips.c; |
| 10117 | that would be more work, but would require less memory when |
| 10118 | the linker is run. */ |
| 10119 | |
| 10120 | /* Modify relocation and contents. */ |
| 10121 | cond_irel->r_info = |
| 10122 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_17_PCREL_RELA); |
| 10123 | |
| 10124 | /* Replace the long call with a bgezal. */ |
| 10125 | bfd_putb32 (insn, contents + cond_irel->r_offset); |
| 10126 | *insn_len = 0; |
| 10127 | |
| 10128 | /* Clean unnessary relocations. */ |
| 10129 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10130 | |
| 10131 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10132 | R_NDS32_17_PCREL_RELA, laddr); |
| 10133 | cond_irel->r_info = |
| 10134 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); |
| 10135 | |
| 10136 | return TRUE; |
| 10137 | } |
| 10138 | |
| 10139 | /* Relax LONGCALL6 relocation for nds32_elf_relax_section. */ |
| 10140 | |
| 10141 | static bfd_boolean |
| 10142 | nds32_elf_relax_longcall6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10143 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10144 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 10145 | Elf_Internal_Shdr *symtab_hdr) |
| 10146 | { |
| 10147 | /* The pattern for LONGCALL6. |
| 10148 | bltz rt, .L1 ; LONGCALL6/17_PCREL |
| 10149 | sethi ta, hi20(symbol) ; HI20/PTR |
| 10150 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR |
| 10151 | jral ta ; PTR_RES/EMPTY/INSN16 |
| 10152 | .L1 */ |
| 10153 | |
| 10154 | bfd_vma laddr; |
| 10155 | uint32_t insn; |
| 10156 | Elf_Internal_Rela *em_irel, *cond_irel, *irelend; |
| 10157 | int pic_ext_target = 0; |
| 10158 | bfd_signed_vma foff; |
| 10159 | |
| 10160 | irelend = internal_relocs + sec->reloc_count; |
| 10161 | laddr = irel->r_offset; |
| 10162 | |
| 10163 | /* Get the reloc for the address from which the register is |
| 10164 | being loaded. This reloc will tell us which function is |
| 10165 | actually being called. */ |
| 10166 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10167 | R_NDS32_EMPTY, irel->r_addend); |
| 10168 | |
| 10169 | if (em_irel == irelend) |
| 10170 | { |
| 10171 | (*_bfd_error_handler) |
| 10172 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" |
| 10173 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10174 | return FALSE; |
| 10175 | } |
| 10176 | |
| 10177 | /* Get the value of the symbol referred to by the reloc. */ |
| 10178 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, |
| 10179 | &pic_ext_target); |
| 10180 | |
| 10181 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 10182 | || foff >= CONSERVATIVE_24BIT_S1) |
| 10183 | return FALSE; |
| 10184 | |
| 10185 | /* Check these is enough space to insert jal in R_NDS32_EMPTY. */ |
| 10186 | insn = bfd_getb32 (contents + irel->r_addend); |
| 10187 | if (insn & 0x80000000) |
| 10188 | return FALSE; |
| 10189 | |
| 10190 | insn = bfd_getb32 (contents + laddr); |
| 10191 | if (foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) |
| 10192 | { |
| 10193 | /* Relax to bgezal rt, label ; 17_PCREL |
| 10194 | or bltzal rt, label ; 17_PCREL */ |
| 10195 | |
| 10196 | /* Convert to complimentary conditional call. */ |
| 10197 | *insn_len = 0; |
| 10198 | insn = CONVERT_CONDITION_CALL (insn); |
| 10199 | bfd_putb32 (insn, contents + em_irel->r_offset); |
| 10200 | |
| 10201 | em_irel->r_info = |
| 10202 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_17_PCREL_RELA); |
| 10203 | |
| 10204 | /* Set resolved relocation. */ |
| 10205 | cond_irel = |
| 10206 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10207 | R_NDS32_PTR_RESOLVED, irel->r_addend); |
| 10208 | if (cond_irel == irelend) |
| 10209 | { |
| 10210 | (*_bfd_error_handler) |
| 10211 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" |
| 10212 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10213 | return FALSE; |
| 10214 | } |
| 10215 | cond_irel->r_addend = 1; |
| 10216 | |
| 10217 | /* Clear relocations. */ |
| 10218 | |
| 10219 | irel->r_info = |
| 10220 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10221 | |
| 10222 | cond_irel = |
| 10223 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10224 | R_NDS32_17_PCREL_RELA, laddr); |
| 10225 | if (cond_irel != irelend) |
| 10226 | cond_irel->r_info = |
| 10227 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); |
| 10228 | |
| 10229 | cond_irel = |
| 10230 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10231 | R_NDS32_INSN16, irel->r_addend); |
| 10232 | if (cond_irel != irelend) |
| 10233 | cond_irel->r_info = |
| 10234 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); |
| 10235 | |
| 10236 | } |
| 10237 | else if (foff >= -CONSERVATIVE_24BIT_S1 && foff < CONSERVATIVE_24BIT_S1) |
| 10238 | { |
| 10239 | /* Relax to the following instruction sequence |
| 10240 | bltz rt, .L1 ; LONGCALL2/17_PCREL |
| 10241 | jal symbol ; 25_PCREL/PTR_RES |
| 10242 | .L1 */ |
| 10243 | *insn_len = 4; |
| 10244 | /* Convert instruction. */ |
| 10245 | insn = INSN_JAL; |
| 10246 | bfd_putb32 (insn, contents + em_irel->r_offset); |
| 10247 | |
| 10248 | /* Convert relocations. */ |
| 10249 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), |
| 10250 | R_NDS32_25_PCREL_RELA); |
| 10251 | irel->r_info = |
| 10252 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_LONGCALL5); |
| 10253 | |
| 10254 | /* Set resolved relocation. */ |
| 10255 | cond_irel = |
| 10256 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10257 | R_NDS32_PTR_RESOLVED, irel->r_addend); |
| 10258 | if (cond_irel == irelend) |
| 10259 | { |
| 10260 | (*_bfd_error_handler) |
| 10261 | ("%B: warning: R_NDS32_LONGCALL6 points to unrecognized" |
| 10262 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10263 | return FALSE; |
| 10264 | } |
| 10265 | cond_irel->r_addend = 1; |
| 10266 | |
| 10267 | cond_irel = |
| 10268 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10269 | R_NDS32_INSN16, irel->r_addend); |
| 10270 | if (cond_irel != irelend) |
| 10271 | cond_irel->r_info = |
| 10272 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); |
| 10273 | } |
| 10274 | return TRUE; |
| 10275 | } |
| 10276 | |
| 10277 | /* Relax LONGJUMP4 relocation for nds32_elf_relax_section. */ |
| 10278 | |
| 10279 | static bfd_boolean |
| 10280 | nds32_elf_relax_longjump4 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10281 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10282 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 10283 | Elf_Internal_Shdr *symtab_hdr) |
| 10284 | { |
| 10285 | /* The pattern for LONGJUMP4. |
| 10286 | sethi ta, hi20(symbol) ; LONGJUMP4/HI20 |
| 10287 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR |
| 10288 | jr ta ; PTR_RES/INSN16/EMPTY */ |
| 10289 | |
| 10290 | bfd_vma laddr; |
| 10291 | int seq_len; /* Original length of instruction sequence. */ |
| 10292 | uint32_t insn; |
| 10293 | Elf_Internal_Rela *hi_irel, *ptr_irel, *em_irel, *call_irel, *irelend; |
| 10294 | int pic_ext_target = 0; |
| 10295 | bfd_signed_vma foff; |
| 10296 | |
| 10297 | irelend = internal_relocs + sec->reloc_count; |
| 10298 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 10299 | laddr = irel->r_offset; |
| 10300 | *insn_len = seq_len; |
| 10301 | |
| 10302 | /* Get the reloc for the address from which the register is |
| 10303 | being loaded. This reloc will tell us which function is |
| 10304 | actually being called. */ |
| 10305 | |
| 10306 | hi_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10307 | R_NDS32_HI20_RELA, laddr); |
| 10308 | |
| 10309 | if (hi_irel == irelend) |
| 10310 | { |
| 10311 | (*_bfd_error_handler) |
| 10312 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" |
| 10313 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10314 | return FALSE; |
| 10315 | } |
| 10316 | |
| 10317 | /* Get the value of the symbol referred to by the reloc. */ |
| 10318 | foff = calculate_offset (abfd, sec, hi_irel, isymbuf, symtab_hdr, |
| 10319 | &pic_ext_target); |
| 10320 | |
| 10321 | if (pic_ext_target || foff == 0 || foff >= CONSERVATIVE_24BIT_S1 |
| 10322 | || foff < -CONSERVATIVE_24BIT_S1) |
| 10323 | return FALSE; |
| 10324 | |
| 10325 | /* Convert it to "j label", it may be converted to j8 in the final |
| 10326 | pass of relaxation. Therefore, we do not consider this currently. */ |
| 10327 | ptr_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10328 | R_NDS32_PTR_RESOLVED, irel->r_addend); |
| 10329 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10330 | R_NDS32_EMPTY, irel->r_addend); |
| 10331 | |
| 10332 | if (ptr_irel == irelend || em_irel == irelend) |
| 10333 | { |
| 10334 | (*_bfd_error_handler) |
| 10335 | ("%B: warning: R_NDS32_LONGJUMP4 points to unrecognized" |
| 10336 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10337 | return FALSE; |
| 10338 | } |
| 10339 | |
| 10340 | em_irel->r_info = |
| 10341 | ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), R_NDS32_25_PCREL_RELA); |
| 10342 | ptr_irel->r_addend = 1; |
| 10343 | |
| 10344 | /* Write instruction. */ |
| 10345 | insn = INSN_J; |
| 10346 | bfd_putb32 (insn, contents + em_irel->r_offset); |
| 10347 | |
| 10348 | /* Clear relocations. */ |
| 10349 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10350 | |
| 10351 | /* If there is function cse, HI20 can not remove now. */ |
| 10352 | call_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10353 | R_NDS32_LONGJUMP4, laddr); |
| 10354 | if (call_irel == irelend) |
| 10355 | { |
| 10356 | *insn_len = 0; |
| 10357 | hi_irel->r_info = |
| 10358 | ELF32_R_INFO (ELF32_R_SYM (hi_irel->r_info), R_NDS32_NONE); |
| 10359 | } |
| 10360 | |
| 10361 | return TRUE; |
| 10362 | } |
| 10363 | |
| 10364 | /* Relax LONGJUMP5 relocation for nds32_elf_relax_section. */ |
| 10365 | |
| 10366 | static bfd_boolean |
| 10367 | nds32_elf_relax_longjump5 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10368 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10369 | int *seq_len, bfd_byte *contents, |
| 10370 | Elf_Internal_Sym *isymbuf, |
| 10371 | Elf_Internal_Shdr *symtab_hdr) |
| 10372 | { |
| 10373 | /* There are 2 variations for LONGJUMP5 |
| 10374 | case 2-4; 1st insn convertible, 16-bit on. |
| 10375 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 |
| 10376 | j label ; 25_PCREL/INSN16 |
| 10377 | $1: |
| 10378 | |
| 10379 | case 4-4; 1st insn not convertible |
| 10380 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 |
| 10381 | j label ; 25_PCREL/INSN16 |
| 10382 | .L1: */ |
| 10383 | |
| 10384 | bfd_vma laddr; |
| 10385 | Elf_Internal_Rela *cond_irel, *irelend; |
| 10386 | int pic_ext_target = 0; |
| 10387 | unsigned int i; |
| 10388 | bfd_signed_vma foff; |
| 10389 | uint32_t insn, re_insn = 0; |
| 10390 | uint16_t insn16, re_insn16 = 0; |
| 10391 | unsigned long reloc; |
| 10392 | |
| 10393 | enum elf_nds32_reloc_type checked_types[] = |
| 10394 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, |
| 10395 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; |
| 10396 | |
| 10397 | irelend = internal_relocs + sec->reloc_count; |
| 10398 | laddr = irel->r_offset; |
| 10399 | |
| 10400 | /* Get the reloc for the address from which the register is |
| 10401 | being loaded. This reloc will tell us which function is |
| 10402 | actually being called. */ |
| 10403 | |
| 10404 | cond_irel = |
| 10405 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10406 | R_NDS32_25_PCREL_RELA, irel->r_addend); |
| 10407 | if (cond_irel == irelend) |
| 10408 | { |
| 10409 | (*_bfd_error_handler) |
| 10410 | ("%B: warning: R_NDS32_LONGJUMP5 points to unrecognized" |
| 10411 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10412 | return FALSE; |
| 10413 | } |
| 10414 | |
| 10415 | /* Get the value of the symbol referred to by the reloc. */ |
| 10416 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, |
| 10417 | &pic_ext_target); |
| 10418 | |
| 10419 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_16BIT_S1 |
| 10420 | || foff >= CONSERVATIVE_16BIT_S1) |
| 10421 | return FALSE; |
| 10422 | |
| 10423 | /* Get the all corresponding instructions. */ |
| 10424 | insn = bfd_getb32 (contents + laddr); |
| 10425 | /* Check instruction size. */ |
| 10426 | if (insn & 0x80000000) |
| 10427 | { |
| 10428 | *seq_len = 0; |
| 10429 | insn16 = insn >> 16; |
| 10430 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); |
| 10431 | } |
| 10432 | else |
| 10433 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); |
| 10434 | |
| 10435 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
| 10436 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) |
| 10437 | { |
| 10438 | /* beqs label ; 15_PCREL. */ |
| 10439 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
| 10440 | reloc = R_NDS32_15_PCREL_RELA; |
| 10441 | } |
| 10442 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 |
| 10443 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) |
| 10444 | { |
| 10445 | /* beqz label ; 17_PCREL. */ |
| 10446 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
| 10447 | reloc = R_NDS32_17_PCREL_RELA; |
| 10448 | } |
| 10449 | else if ( N32_OP6 (re_insn) == N32_OP6_BR3 |
| 10450 | && foff >= -CONSERVATIVE_8BIT_S1 && foff < CONSERVATIVE_8BIT_S1) |
| 10451 | { |
| 10452 | /* beqc label ; 9_PCREL. */ |
| 10453 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
| 10454 | reloc = R_NDS32_WORD_9_PCREL_RELA; |
| 10455 | } |
| 10456 | else |
| 10457 | return FALSE; |
| 10458 | |
| 10459 | /* Set all relocations. */ |
| 10460 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), reloc); |
| 10461 | |
| 10462 | /* Clean relocations. */ |
| 10463 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10464 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
| 10465 | { |
| 10466 | cond_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10467 | checked_types[i], laddr); |
| 10468 | if (cond_irel != irelend) |
| 10469 | { |
| 10470 | if (*seq_len == 0 |
| 10471 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) |
| 10472 | { |
| 10473 | /* If the branch instruction is 2 byte, it cannot remove |
| 10474 | directly. Only convert it to nop16 and remove it after |
| 10475 | checking alignment issue. */ |
| 10476 | insn16 = NDS32_NOP16; |
| 10477 | bfd_putb16 (insn16, contents + laddr); |
| 10478 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 10479 | } |
| 10480 | else |
| 10481 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
| 10482 | R_NDS32_NONE); |
| 10483 | } |
| 10484 | } |
| 10485 | *insn_len = 0; |
| 10486 | |
| 10487 | return TRUE; |
| 10488 | } |
| 10489 | |
| 10490 | /* Relax LONGJUMP6 relocation for nds32_elf_relax_section. */ |
| 10491 | |
| 10492 | static bfd_boolean |
| 10493 | nds32_elf_relax_longjump6 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10494 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10495 | int *seq_len, bfd_byte *contents, |
| 10496 | Elf_Internal_Sym *isymbuf, |
| 10497 | Elf_Internal_Shdr *symtab_hdr) |
| 10498 | { |
| 10499 | /* There are 5 variations for LONGJUMP6 |
| 10500 | case : 2-4-4-4; 1st insn convertible, 16-bit on. |
| 10501 | bnes38 rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 |
| 10502 | sethi ta, hi20(symbol) ; HI20/PTR |
| 10503 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR |
| 10504 | jr ta ; PTR_RES/INSN16/EMPTY |
| 10505 | .L1: |
| 10506 | |
| 10507 | case : 4-4-4-4; 1st insn not convertible, 16-bit on. |
| 10508 | bne rt, ra, .L1 ; LONGJUMP6/15_PCREL/INSN16 |
| 10509 | sethi ta, hi20(symbol) ; HI20/PTR |
| 10510 | ori ta, ta, lo12(symbol) ; LO12S0_ORI/PTR |
| 10511 | jr ta ; PTR_RES/INSN16/EMPTY |
| 10512 | .L1: */ |
| 10513 | |
| 10514 | enum elf_nds32_reloc_type checked_types[] = |
| 10515 | { R_NDS32_17_PCREL_RELA, R_NDS32_15_PCREL_RELA, |
| 10516 | R_NDS32_9_PCREL_RELA, R_NDS32_INSN16 }; |
| 10517 | |
| 10518 | int reloc_off = 0, cond_removed = 0; |
| 10519 | bfd_vma laddr; |
| 10520 | Elf_Internal_Rela *cond_irel, *em_irel, *irelend, *insn_irel; |
| 10521 | int pic_ext_target = 0; |
| 10522 | unsigned int i; |
| 10523 | bfd_signed_vma foff; |
| 10524 | uint32_t insn, re_insn = 0; |
| 10525 | uint16_t insn16, re_insn16 = 0; |
| 10526 | unsigned long reloc; |
| 10527 | |
| 10528 | irelend = internal_relocs + sec->reloc_count; |
| 10529 | laddr = irel->r_offset; |
| 10530 | |
| 10531 | /* Get the reloc for the address from which the register is |
| 10532 | being loaded. This reloc will tell us which function is |
| 10533 | actually being called. */ |
| 10534 | em_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10535 | R_NDS32_EMPTY, irel->r_addend); |
| 10536 | |
| 10537 | if (em_irel == irelend) |
| 10538 | { |
| 10539 | (*_bfd_error_handler) |
| 10540 | ("%B: warning: R_NDS32_LONGJUMP6 points to unrecognized" |
| 10541 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10542 | return FALSE; |
| 10543 | } |
| 10544 | |
| 10545 | /* Get the value of the symbol referred to by the reloc. */ |
| 10546 | foff = calculate_offset (abfd, sec, em_irel, isymbuf, symtab_hdr, |
| 10547 | &pic_ext_target); |
| 10548 | |
| 10549 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_24BIT_S1 |
| 10550 | || foff >= CONSERVATIVE_24BIT_S1) |
| 10551 | return FALSE; |
| 10552 | |
| 10553 | insn = bfd_getb32 (contents + laddr); |
| 10554 | /* Check instruction size. */ |
| 10555 | if (insn & 0x80000000) |
| 10556 | { |
| 10557 | *seq_len = 0; |
| 10558 | insn16 = insn >> 16; |
| 10559 | nds32_elf_convert_branch (insn16, 0, &re_insn16, &re_insn); |
| 10560 | } |
| 10561 | else |
| 10562 | nds32_elf_convert_branch (0, insn, &re_insn16, &re_insn); |
| 10563 | |
| 10564 | /* For simplicity of coding, we are going to modify the section |
| 10565 | contents, the section relocs, and the BFD symbol table. We |
| 10566 | must tell the rest of the code not to free up this |
| 10567 | information. It would be possible to instead create a table |
| 10568 | of changes which have to be made, as is done in coff-mips.c; |
| 10569 | that would be more work, but would require less memory when |
| 10570 | the linker is run. */ |
| 10571 | |
| 10572 | if (N32_OP6 (re_insn) == N32_OP6_BR1 |
| 10573 | && (foff >= -CONSERVATIVE_14BIT_S1 && foff < CONSERVATIVE_14BIT_S1)) |
| 10574 | { |
| 10575 | /* beqs label ; 15_PCREL */ |
| 10576 | bfd_putb32 (re_insn, contents + em_irel->r_offset); |
| 10577 | reloc = R_NDS32_15_PCREL_RELA; |
| 10578 | cond_removed = 1; |
| 10579 | } |
| 10580 | else if (N32_OP6 (re_insn) == N32_OP6_BR2 |
| 10581 | && foff >= -CONSERVATIVE_16BIT_S1 && foff < CONSERVATIVE_16BIT_S1) |
| 10582 | { |
| 10583 | /* beqz label ; 17_PCREL */ |
| 10584 | bfd_putb32 (re_insn, contents + em_irel->r_offset); |
| 10585 | reloc = R_NDS32_17_PCREL_RELA; |
| 10586 | cond_removed = 1; |
| 10587 | } |
| 10588 | else if (foff >= -CONSERVATIVE_24BIT_S1 - reloc_off |
| 10589 | && foff < CONSERVATIVE_24BIT_S1 - reloc_off) |
| 10590 | { |
| 10591 | /* Relax to one of the following 2 variations |
| 10592 | |
| 10593 | case 2-4; 1st insn convertible, 16-bit on. |
| 10594 | bnes38 rt, ra, .L1 ; LONGJUMP5/9_PCREL/INSN16 |
| 10595 | j label ; 25_PCREL/INSN16 |
| 10596 | $1: |
| 10597 | |
| 10598 | case 4-4; 1st insn not convertible |
| 10599 | bne rt, ra, .L1 ; LONGJUMP5/15_PCREL/INSN16 |
| 10600 | j label ; 25_PCREL/INSN16 |
| 10601 | .L1: */ |
| 10602 | |
| 10603 | /* Use j label as second instruction. */ |
| 10604 | insn = INSN_J; |
| 10605 | reloc = R_NDS32_25_PCREL_RELA; |
| 10606 | bfd_putb32 (insn, contents + em_irel->r_offset); |
| 10607 | } |
| 10608 | else |
| 10609 | return FALSE; |
| 10610 | |
| 10611 | /* Set all relocations. */ |
| 10612 | em_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (em_irel->r_info), reloc); |
| 10613 | |
| 10614 | cond_irel = |
| 10615 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10616 | R_NDS32_PTR_RESOLVED, em_irel->r_offset); |
| 10617 | cond_irel->r_addend = 1; |
| 10618 | |
| 10619 | /* Use INSN16 of first branch instruction to distinguish if keeping |
| 10620 | INSN16 of final instruction or not. */ |
| 10621 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10622 | R_NDS32_INSN16, irel->r_offset); |
| 10623 | if (insn_irel == irelend) |
| 10624 | { |
| 10625 | /* Clean the final INSN16. */ |
| 10626 | insn_irel = |
| 10627 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10628 | R_NDS32_INSN16, em_irel->r_offset); |
| 10629 | insn_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
| 10630 | R_NDS32_NONE); |
| 10631 | } |
| 10632 | |
| 10633 | if (cond_removed == 1) |
| 10634 | { |
| 10635 | *insn_len = 0; |
| 10636 | |
| 10637 | /* Clear relocations. */ |
| 10638 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10639 | |
| 10640 | for (i = 0; i < sizeof (checked_types) / sizeof (checked_types[0]); i++) |
| 10641 | { |
| 10642 | cond_irel = |
| 10643 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10644 | checked_types[i], laddr); |
| 10645 | if (cond_irel != irelend) |
| 10646 | { |
| 10647 | if (*seq_len == 0 |
| 10648 | && (ELF32_R_TYPE (cond_irel->r_info) == R_NDS32_INSN16)) |
| 10649 | { |
| 10650 | /* If the branch instruction is 2 byte, it cannot remove |
| 10651 | directly. Only convert it to nop16 and remove it after |
| 10652 | checking alignment issue. */ |
| 10653 | insn16 = NDS32_NOP16; |
| 10654 | bfd_putb16 (insn16, contents + laddr); |
| 10655 | cond_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 10656 | } |
| 10657 | else |
| 10658 | cond_irel->r_info = |
| 10659 | ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), R_NDS32_NONE); |
| 10660 | } |
| 10661 | } |
| 10662 | } |
| 10663 | else |
| 10664 | { |
| 10665 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 10666 | R_NDS32_LONGJUMP5); |
| 10667 | } |
| 10668 | |
| 10669 | return TRUE; |
| 10670 | } |
| 10671 | |
| 10672 | /* Relax LONGJUMP7 relocation for nds32_elf_relax_section. */ |
| 10673 | |
| 10674 | static bfd_boolean |
| 10675 | nds32_elf_relax_longjump7 (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 10676 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10677 | int *seq_len, bfd_byte *contents, |
| 10678 | Elf_Internal_Sym *isymbuf, |
| 10679 | Elf_Internal_Shdr *symtab_hdr) |
| 10680 | { |
| 10681 | /* There are 2 variations for LONGJUMP5 |
| 10682 | case 2-4; 1st insn convertible, 16-bit on. |
| 10683 | movi55 ta, imm11 ; LONGJUMP7/INSN16 |
| 10684 | beq rt, ta, label ; 15_PCREL |
| 10685 | |
| 10686 | case 4-4; 1st insn not convertible |
| 10687 | movi55 ta, imm11 ; LONGJUMP7/INSN16 |
| 10688 | beq rt, ta, label ; 15_PCREL */ |
| 10689 | |
| 10690 | bfd_vma laddr; |
| 10691 | Elf_Internal_Rela *cond_irel, *irelend, *insn_irel; |
| 10692 | int pic_ext_target = 0; |
| 10693 | bfd_signed_vma foff; |
| 10694 | uint32_t insn, re_insn = 0; |
| 10695 | uint16_t insn16; |
| 10696 | uint32_t imm11; |
| 10697 | |
| 10698 | irelend = internal_relocs + sec->reloc_count; |
| 10699 | laddr = irel->r_offset; |
| 10700 | |
| 10701 | /* Get the reloc for the address from which the register is |
| 10702 | being loaded. This reloc will tell us which function is |
| 10703 | actually being called. */ |
| 10704 | |
| 10705 | cond_irel = |
| 10706 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10707 | R_NDS32_15_PCREL_RELA, irel->r_addend); |
| 10708 | if (cond_irel == irelend) |
| 10709 | { |
| 10710 | (*_bfd_error_handler) |
| 10711 | ("%B: warning: R_NDS32_LONGJUMP7 points to unrecognized" |
| 10712 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10713 | return FALSE; |
| 10714 | } |
| 10715 | |
| 10716 | /* Get the value of the symbol referred to by the reloc. */ |
| 10717 | foff = calculate_offset (abfd, sec, cond_irel, isymbuf, symtab_hdr, |
| 10718 | &pic_ext_target); |
| 10719 | |
| 10720 | if (pic_ext_target || foff == 0 || foff < -CONSERVATIVE_8BIT_S1 |
| 10721 | || foff >= CONSERVATIVE_8BIT_S1) |
| 10722 | return FALSE; |
| 10723 | |
| 10724 | /* Get the first instruction for its size. */ |
| 10725 | insn = bfd_getb32 (contents + laddr); |
| 10726 | if (insn & 0x80000000) |
| 10727 | { |
| 10728 | *seq_len = 0; |
| 10729 | /* Get the immediate from movi55. */ |
| 10730 | imm11 = N16_IMM5S (insn >> 16); |
| 10731 | } |
| 10732 | else |
| 10733 | { |
| 10734 | /* Get the immediate from movi. */ |
| 10735 | imm11 = N32_IMM20S (insn); |
| 10736 | } |
| 10737 | |
| 10738 | /* Get the branch instruction. */ |
| 10739 | insn = bfd_getb32 (contents + irel->r_addend); |
| 10740 | /* Convert instruction to BR3. */ |
| 10741 | if ((insn >> 14) & 0x1) |
| 10742 | re_insn = N32_BR3 (BNEC, N32_RT5 (insn), imm11, 0); |
| 10743 | else |
| 10744 | re_insn = N32_BR3 (BEQC, N32_RT5 (insn), imm11, 0); |
| 10745 | |
| 10746 | bfd_putb32 (re_insn, contents + cond_irel->r_offset); |
| 10747 | |
| 10748 | /* Set all relocations. */ |
| 10749 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
| 10750 | R_NDS32_WORD_9_PCREL_RELA); |
| 10751 | |
| 10752 | /* Clean relocations. */ |
| 10753 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10754 | insn_irel = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10755 | R_NDS32_INSN16, irel->r_offset); |
| 10756 | if (insn_irel != irelend) |
| 10757 | { |
| 10758 | if (*seq_len == 0) |
| 10759 | { |
| 10760 | /* If the first insntruction is 16bit, convert it to nop16. */ |
| 10761 | insn16 = NDS32_NOP16; |
| 10762 | bfd_putb16 (insn16, contents + laddr); |
| 10763 | insn_irel->r_addend = R_NDS32_INSN16_CONVERT_FLAG; |
| 10764 | } |
| 10765 | else |
| 10766 | cond_irel->r_info = ELF32_R_INFO (ELF32_R_SYM (cond_irel->r_info), |
| 10767 | R_NDS32_NONE); |
| 10768 | } |
| 10769 | *insn_len = 0; |
| 10770 | |
| 10771 | return TRUE; |
| 10772 | } |
| 10773 | |
| 10774 | #define GET_LOADSTORE_RANGE(addend) (((addend) >> 8) & 0x3f) |
| 10775 | |
| 10776 | /* Relax LOADSTORE relocation for nds32_elf_relax_section. */ |
| 10777 | |
| 10778 | static bfd_boolean |
| 10779 | nds32_elf_relax_loadstore (struct bfd_link_info *link_info, bfd *abfd, |
| 10780 | asection *sec, Elf_Internal_Rela *irel, |
| 10781 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 10782 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 10783 | Elf_Internal_Shdr *symtab_hdr, int load_store_relax) |
| 10784 | { |
| 10785 | int eliminate_sethi = 0, range_type; |
| 10786 | unsigned int i; |
| 10787 | bfd_vma local_sda, laddr; |
| 10788 | int seq_len; /* Original length of instruction sequence. */ |
| 10789 | uint32_t insn; |
| 10790 | Elf_Internal_Rela *hi_irelfn = NULL, *irelend; |
| 10791 | bfd_vma access_addr = 0; |
| 10792 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ |
| 10793 | enum elf_nds32_reloc_type checked_types[] = |
| 10794 | { R_NDS32_HI20_RELA, R_NDS32_GOT_HI20, |
| 10795 | R_NDS32_GOTPC_HI20, R_NDS32_GOTOFF_HI20, |
| 10796 | R_NDS32_PLTREL_HI20, R_NDS32_PLT_GOTREL_HI20, |
| 10797 | R_NDS32_TLS_LE_HI20 |
| 10798 | }; |
| 10799 | |
| 10800 | irelend = internal_relocs + sec->reloc_count; |
| 10801 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 10802 | laddr = irel->r_offset; |
| 10803 | *insn_len = seq_len; |
| 10804 | |
| 10805 | /* Get the high part relocation. */ |
| 10806 | for (i = 0; i < ARRAY_SIZE (checked_types); i++) |
| 10807 | { |
| 10808 | hi_irelfn = find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 10809 | checked_types[i], laddr); |
| 10810 | if (hi_irelfn != irelend) |
| 10811 | break; |
| 10812 | } |
| 10813 | |
| 10814 | if (hi_irelfn == irelend) |
| 10815 | { |
| 10816 | (*_bfd_error_handler) |
| 10817 | ("%B: warning: R_NDS32_LOADSTORE points to unrecognized" |
| 10818 | "reloc at 0x%lx.", abfd, (long) irel->r_offset); |
| 10819 | return FALSE; |
| 10820 | } |
| 10821 | |
| 10822 | range_type = GET_LOADSTORE_RANGE (irel->r_addend); |
| 10823 | nds32_elf_final_sda_base (sec->output_section->owner, |
| 10824 | link_info, &local_sda, FALSE); |
| 10825 | |
| 10826 | switch (ELF32_R_TYPE (hi_irelfn->r_info)) |
| 10827 | { |
| 10828 | case R_NDS32_HI20_RELA: |
| 10829 | insn = bfd_getb32 (contents + laddr); |
| 10830 | access_addr = |
| 10831 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); |
| 10832 | |
| 10833 | if (range_type == NDS32_LOADSTORE_IMM) |
| 10834 | { |
| 10835 | struct elf_link_hash_entry *h = NULL; |
| 10836 | int indx; |
| 10837 | |
| 10838 | if (ELF32_R_SYM (hi_irelfn->r_info) >= symtab_hdr->sh_info) |
| 10839 | { |
| 10840 | indx = ELF32_R_SYM (hi_irelfn->r_info) - symtab_hdr->sh_info; |
| 10841 | h = elf_sym_hashes (abfd)[indx]; |
| 10842 | } |
| 10843 | |
| 10844 | if ((access_addr < CONSERVATIVE_20BIT) |
| 10845 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) |
| 10846 | { |
| 10847 | eliminate_sethi = 1; |
| 10848 | break; |
| 10849 | } |
| 10850 | |
| 10851 | /* This is avoid to relax symbol address which is fixed |
| 10852 | relocations. Ex: _stack. */ |
| 10853 | if (h && bfd_is_abs_section (h->root.u.def.section)) |
| 10854 | return FALSE; |
| 10855 | } |
| 10856 | |
| 10857 | if (!load_store_relax) |
| 10858 | return FALSE; |
| 10859 | |
| 10860 | /* Case for set gp register. */ |
| 10861 | if (N32_RT5 (insn) == REG_GP) |
| 10862 | break; |
| 10863 | |
| 10864 | if (range_type == NDS32_LOADSTORE_FLOAT_S |
| 10865 | || range_type == NDS32_LOADSTORE_FLOAT_S) |
| 10866 | { |
| 10867 | range_l = sdata_range[0][0]; |
| 10868 | range_h = sdata_range[0][1]; |
| 10869 | } |
| 10870 | else |
| 10871 | { |
| 10872 | range_l = sdata_range[1][0]; |
| 10873 | range_h = sdata_range[1][1]; |
| 10874 | } |
| 10875 | break; |
| 10876 | |
| 10877 | case R_NDS32_GOT_HI20: |
| 10878 | access_addr = |
| 10879 | calculate_got_memory_address (abfd, link_info, hi_irelfn, symtab_hdr); |
| 10880 | |
| 10881 | /* If this symbol is not in .got, the return value will be -1. |
| 10882 | Since the gp value is set to SDA_BASE but not GLOBAL_OFFSET_TABLE, |
| 10883 | a negative offset is allowed. */ |
| 10884 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT |
| 10885 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) |
| 10886 | eliminate_sethi = 1; |
| 10887 | break; |
| 10888 | |
| 10889 | case R_NDS32_PLT_GOTREL_HI20: |
| 10890 | access_addr = calculate_plt_memory_address (abfd, link_info, isymbuf, |
| 10891 | hi_irelfn, symtab_hdr); |
| 10892 | |
| 10893 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT |
| 10894 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) |
| 10895 | eliminate_sethi = 1; |
| 10896 | break; |
| 10897 | |
| 10898 | case R_NDS32_GOTOFF_HI20: |
| 10899 | access_addr = |
| 10900 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); |
| 10901 | |
| 10902 | if ((bfd_signed_vma) (access_addr - local_sda) < CONSERVATIVE_20BIT |
| 10903 | && (bfd_signed_vma) (access_addr - local_sda) >= -CONSERVATIVE_20BIT) |
| 10904 | eliminate_sethi = 1; |
| 10905 | break; |
| 10906 | |
| 10907 | case R_NDS32_GOTPC_HI20: |
| 10908 | /* The access_addr must consider r_addend of hi_irel. */ |
| 10909 | access_addr = sec->output_section->vma + sec->output_offset |
| 10910 | + irel->r_offset + hi_irelfn->r_addend; |
| 10911 | |
| 10912 | if ((bfd_signed_vma) (local_sda - access_addr) < CONSERVATIVE_20BIT |
| 10913 | && (bfd_signed_vma) (local_sda - access_addr) >= -CONSERVATIVE_20BIT) |
| 10914 | eliminate_sethi = 1; |
| 10915 | break; |
| 10916 | |
| 10917 | case R_NDS32_TLS_LE_HI20: |
| 10918 | access_addr = |
| 10919 | calculate_memory_address (abfd, hi_irelfn, isymbuf, symtab_hdr); |
| 10920 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); |
| 10921 | access_addr -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); |
| 10922 | if ((range_type == NDS32_LOADSTORE_IMM) |
| 10923 | && (bfd_signed_vma) (access_addr) < CONSERVATIVE_20BIT |
| 10924 | && (bfd_signed_vma) (access_addr) >= -CONSERVATIVE_20BIT) |
| 10925 | eliminate_sethi = 1; |
| 10926 | break; |
| 10927 | |
| 10928 | default: |
| 10929 | return FALSE; |
| 10930 | } |
| 10931 | |
| 10932 | /* Delete sethi instruction. */ |
| 10933 | if (eliminate_sethi == 1 |
| 10934 | || (local_sda <= access_addr && (access_addr - local_sda) < range_h) |
| 10935 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) |
| 10936 | { |
| 10937 | hi_irelfn->r_info = |
| 10938 | ELF32_R_INFO (ELF32_R_SYM (hi_irelfn->r_info), R_NDS32_NONE); |
| 10939 | irel->r_info = |
| 10940 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 10941 | *insn_len = 0; |
| 10942 | } |
| 10943 | return TRUE; |
| 10944 | } |
| 10945 | |
| 10946 | /* Relax LO12 relocation for nds32_elf_relax_section. */ |
| 10947 | |
| 10948 | static void |
| 10949 | nds32_elf_relax_lo12 (struct bfd_link_info *link_info, bfd *abfd, |
| 10950 | asection *sec, Elf_Internal_Rela *irel, |
| 10951 | Elf_Internal_Rela *internal_relocs, bfd_byte *contents, |
| 10952 | Elf_Internal_Sym *isymbuf, Elf_Internal_Shdr *symtab_hdr) |
| 10953 | { |
| 10954 | uint32_t insn; |
| 10955 | bfd_vma local_sda, laddr; |
| 10956 | unsigned long reloc; |
| 10957 | bfd_vma access_addr; |
| 10958 | bfd_vma range_l = 0, range_h = 0; /* Upper/lower bound. */ |
| 10959 | Elf_Internal_Rela *irelfn = NULL, *irelend; |
| 10960 | struct elf_link_hash_entry *h = NULL; |
| 10961 | int indx; |
| 10962 | |
| 10963 | /* For SDA base relative relaxation. */ |
| 10964 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 10965 | &local_sda, FALSE); |
| 10966 | |
| 10967 | irelend = internal_relocs + sec->reloc_count; |
| 10968 | laddr = irel->r_offset; |
| 10969 | insn = bfd_getb32 (contents + laddr); |
| 10970 | |
| 10971 | if (!is_sda_access_insn (insn) && N32_OP6 (insn) != N32_OP6_ORI) |
| 10972 | return; |
| 10973 | |
| 10974 | access_addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 10975 | |
| 10976 | if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info) |
| 10977 | { |
| 10978 | indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 10979 | h = elf_sym_hashes (abfd)[indx]; |
| 10980 | } |
| 10981 | |
| 10982 | if (N32_OP6 (insn) == N32_OP6_ORI && access_addr < CONSERVATIVE_20BIT |
| 10983 | && (!h || (h && strcmp (h->root.root.string, FP_BASE_NAME) != 0))) |
| 10984 | { |
| 10985 | reloc = R_NDS32_20_RELA; |
| 10986 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); |
| 10987 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); |
| 10988 | bfd_putb32 (insn, contents + laddr); |
| 10989 | } |
| 10990 | /* This is avoid to relax symbol address which is fixed |
| 10991 | relocations. Ex: _stack. */ |
| 10992 | else if (N32_OP6 (insn) == N32_OP6_ORI |
| 10993 | && h && bfd_is_abs_section (h->root.u.def.section)) |
| 10994 | return; |
| 10995 | else |
| 10996 | { |
| 10997 | range_l = sdata_range[1][0]; |
| 10998 | range_h = sdata_range[1][1]; |
| 10999 | switch (ELF32_R_TYPE (irel->r_info)) |
| 11000 | { |
| 11001 | case R_NDS32_LO12S0_RELA: |
| 11002 | reloc = R_NDS32_SDA19S0_RELA; |
| 11003 | break; |
| 11004 | case R_NDS32_LO12S1_RELA: |
| 11005 | reloc = R_NDS32_SDA18S1_RELA; |
| 11006 | break; |
| 11007 | case R_NDS32_LO12S2_RELA: |
| 11008 | reloc = R_NDS32_SDA17S2_RELA; |
| 11009 | break; |
| 11010 | case R_NDS32_LO12S2_DP_RELA: |
| 11011 | range_l = sdata_range[0][0]; |
| 11012 | range_h = sdata_range[0][1]; |
| 11013 | reloc = R_NDS32_SDA12S2_DP_RELA; |
| 11014 | break; |
| 11015 | case R_NDS32_LO12S2_SP_RELA: |
| 11016 | range_l = sdata_range[0][0]; |
| 11017 | range_h = sdata_range[0][1]; |
| 11018 | reloc = R_NDS32_SDA12S2_SP_RELA; |
| 11019 | break; |
| 11020 | default: |
| 11021 | return; |
| 11022 | } |
| 11023 | |
| 11024 | /* There are range_h and range_l because linker has to promise |
| 11025 | all sections move cross one page together. */ |
| 11026 | if ((local_sda <= access_addr && (access_addr - local_sda) < range_h) |
| 11027 | || (local_sda > access_addr && (local_sda - access_addr) <= range_l)) |
| 11028 | { |
| 11029 | if (N32_OP6 (insn) == N32_OP6_ORI && N32_RT5 (insn) == REG_GP) |
| 11030 | { |
| 11031 | /* Maybe we should add R_NDS32_INSN16 reloc type here |
| 11032 | or manually do some optimization. sethi can't be |
| 11033 | eliminated when updating $gp so the relative ori |
| 11034 | needs to be preserved. */ |
| 11035 | return; |
| 11036 | } |
| 11037 | if (!turn_insn_to_sda_access (insn, ELF32_R_TYPE (irel->r_info), |
| 11038 | &insn)) |
| 11039 | return; |
| 11040 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); |
| 11041 | bfd_putb32 (insn, contents + laddr); |
| 11042 | |
| 11043 | irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11044 | R_NDS32_INSN16); |
| 11045 | /* SDA17 must keep INSN16 for converting fp_as_gp. */ |
| 11046 | if (irelfn != irelend && reloc != R_NDS32_SDA17S2_RELA) |
| 11047 | irelfn->r_info = |
| 11048 | ELF32_R_INFO (ELF32_R_SYM (irelfn->r_info), R_NDS32_NONE); |
| 11049 | |
| 11050 | } |
| 11051 | } |
| 11052 | return; |
| 11053 | } |
| 11054 | |
| 11055 | /* Relax low part of PIC instruction pattern. */ |
| 11056 | |
| 11057 | static void |
| 11058 | nds32_elf_relax_piclo12 (struct bfd_link_info *link_info, bfd *abfd, |
| 11059 | asection *sec, Elf_Internal_Rela *irel, |
| 11060 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11061 | Elf_Internal_Shdr *symtab_hdr) |
| 11062 | { |
| 11063 | uint32_t insn; |
| 11064 | bfd_vma local_sda, laddr; |
| 11065 | bfd_signed_vma foff; |
| 11066 | unsigned long reloc; |
| 11067 | |
| 11068 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 11069 | &local_sda, FALSE); |
| 11070 | laddr = irel->r_offset; |
| 11071 | insn = bfd_getb32 (contents + laddr); |
| 11072 | |
| 11073 | if (N32_OP6 (insn) != N32_OP6_ORI) |
| 11074 | return; |
| 11075 | |
| 11076 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12) |
| 11077 | { |
| 11078 | foff = calculate_got_memory_address (abfd, link_info, irel, |
| 11079 | symtab_hdr) - local_sda; |
| 11080 | reloc = R_NDS32_GOT20; |
| 11081 | } |
| 11082 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12) |
| 11083 | { |
| 11084 | foff = calculate_plt_memory_address (abfd, link_info, isymbuf, irel, |
| 11085 | symtab_hdr) - local_sda; |
| 11086 | reloc = R_NDS32_PLT_GOTREL_LO20; |
| 11087 | } |
| 11088 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12) |
| 11089 | { |
| 11090 | foff = calculate_memory_address (abfd, irel, isymbuf, |
| 11091 | symtab_hdr) - local_sda; |
| 11092 | reloc = R_NDS32_GOTOFF; |
| 11093 | } |
| 11094 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12) |
| 11095 | { |
| 11096 | foff = local_sda - sec->output_section->vma + sec->output_offset |
| 11097 | + irel->r_offset + irel->r_addend; |
| 11098 | reloc = R_NDS32_GOTPC20; |
| 11099 | } |
| 11100 | else |
| 11101 | return; |
| 11102 | |
| 11103 | if ((foff < CONSERVATIVE_20BIT) && (foff >= -CONSERVATIVE_20BIT)) |
| 11104 | { |
| 11105 | /* Turn into MOVI. */ |
| 11106 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); |
| 11107 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); |
| 11108 | bfd_putb32 (insn, contents + laddr); |
| 11109 | } |
| 11110 | } |
| 11111 | |
| 11112 | /* Relax low part of LE TLS instruction pattern. */ |
| 11113 | |
| 11114 | static void |
| 11115 | nds32_elf_relax_letlslo12 (struct bfd_link_info *link_info, bfd *abfd, |
| 11116 | Elf_Internal_Rela *irel, |
| 11117 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11118 | Elf_Internal_Shdr *symtab_hdr) |
| 11119 | { |
| 11120 | uint32_t insn; |
| 11121 | bfd_vma laddr; |
| 11122 | bfd_signed_vma foff; |
| 11123 | unsigned long reloc; |
| 11124 | |
| 11125 | laddr = irel->r_offset; |
| 11126 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 11127 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); |
| 11128 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); |
| 11129 | insn = bfd_getb32 (contents + laddr); |
| 11130 | |
| 11131 | if ( (bfd_signed_vma) (foff) < CONSERVATIVE_20BIT |
| 11132 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_20BIT) |
| 11133 | { |
| 11134 | /* Pattern sethi-ori transform to movi. */ |
| 11135 | reloc = R_NDS32_TLS_LE_20; |
| 11136 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), reloc); |
| 11137 | insn = N32_TYPE1 (MOVI, N32_RT5 (insn), 0); |
| 11138 | bfd_putb32 (insn, contents + laddr); |
| 11139 | } |
| 11140 | } |
| 11141 | |
| 11142 | /* Relax LE TLS calculate address instruction pattern. */ |
| 11143 | |
| 11144 | static void |
| 11145 | nds32_elf_relax_letlsadd (struct bfd_link_info *link_info, bfd *abfd, |
| 11146 | asection *sec, Elf_Internal_Rela *irel, |
| 11147 | Elf_Internal_Rela *internal_relocs, |
| 11148 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11149 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) |
| 11150 | { |
| 11151 | /* Local TLS non-pic |
| 11152 | sethi ta, hi20(symbol@tpoff) ; TLS_LE_HI20 |
| 11153 | ori ta, ta, lo12(symbol@tpoff) ; TLS_LE_LO12 |
| 11154 | add ra, ta, tp ; TLS_LE_ADD */ |
| 11155 | |
| 11156 | uint32_t insn; |
| 11157 | bfd_vma laddr; |
| 11158 | bfd_signed_vma foff; |
| 11159 | Elf_Internal_Rela *i1_irelfn, *irelend; |
| 11160 | |
| 11161 | irelend = internal_relocs + sec->reloc_count; |
| 11162 | laddr = irel->r_offset; |
| 11163 | insn = bfd_getb32 (contents + laddr); |
| 11164 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11165 | R_NDS32_PTR_RESOLVED); |
| 11166 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 11167 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); |
| 11168 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); |
| 11169 | |
| 11170 | /* The range is +/-16k. */ |
| 11171 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT |
| 11172 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) |
| 11173 | { |
| 11174 | /* Transform add to addi. */ |
| 11175 | insn = N32_TYPE2 (ADDI, N32_RT5 (insn), N32_RB5 (insn), 0); |
| 11176 | irel->r_info = |
| 11177 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); |
| 11178 | |
| 11179 | bfd_putb32 (insn, contents + laddr); |
| 11180 | if (i1_irelfn != irelend) |
| 11181 | { |
| 11182 | i1_irelfn->r_addend |= 1; |
| 11183 | *again = TRUE; |
| 11184 | } |
| 11185 | } |
| 11186 | } |
| 11187 | |
| 11188 | /* Relax LE TLS load store instruction pattern. */ |
| 11189 | |
| 11190 | static void |
| 11191 | nds32_elf_relax_letlsls (struct bfd_link_info *link_info, bfd *abfd, |
| 11192 | asection *sec, Elf_Internal_Rela *irel, |
| 11193 | Elf_Internal_Rela *internal_relocs, |
| 11194 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11195 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) |
| 11196 | { |
| 11197 | |
| 11198 | uint32_t insn; |
| 11199 | bfd_vma laddr; |
| 11200 | bfd_signed_vma foff; |
| 11201 | Elf_Internal_Rela *i1_irelfn, *irelend; |
| 11202 | int success = 0; |
| 11203 | |
| 11204 | irelend = internal_relocs + sec->reloc_count; |
| 11205 | laddr = irel->r_offset; |
| 11206 | insn = bfd_getb32 (contents + laddr); |
| 11207 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11208 | R_NDS32_PTR_RESOLVED); |
| 11209 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 11210 | BFD_ASSERT (elf_hash_table (link_info)->tls_sec != NULL); |
| 11211 | foff -= (elf_hash_table (link_info)->tls_sec->vma + TP_OFFSET); |
| 11212 | |
| 11213 | switch ((N32_OP6 (insn) << 8) | (insn & 0xff)) |
| 11214 | { |
| 11215 | case (N32_OP6_MEM << 8) | N32_MEM_LB: |
| 11216 | case (N32_OP6_MEM << 8) | N32_MEM_SB: |
| 11217 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: |
| 11218 | /* The range is +/-16k. */ |
| 11219 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT |
| 11220 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT) |
| 11221 | { |
| 11222 | insn = |
| 11223 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); |
| 11224 | irel->r_info = |
| 11225 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S0); |
| 11226 | success = 1; |
| 11227 | break; |
| 11228 | } |
| 11229 | case (N32_OP6_MEM << 8) | N32_MEM_LH: |
| 11230 | case (N32_OP6_MEM << 8) | N32_MEM_SH: |
| 11231 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: |
| 11232 | /* The range is +/-32k. */ |
| 11233 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S1 |
| 11234 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S1) |
| 11235 | { |
| 11236 | insn = |
| 11237 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); |
| 11238 | irel->r_info = |
| 11239 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S1); |
| 11240 | success = 1; |
| 11241 | break; |
| 11242 | } |
| 11243 | case (N32_OP6_MEM << 8) | N32_MEM_LW: |
| 11244 | case (N32_OP6_MEM << 8) | N32_MEM_SW: |
| 11245 | /* The range is +/-64k. */ |
| 11246 | if ((bfd_signed_vma) (foff) < CONSERVATIVE_15BIT_S2 |
| 11247 | && (bfd_signed_vma) (foff) >= -CONSERVATIVE_15BIT_S2) |
| 11248 | { |
| 11249 | insn = |
| 11250 | ((insn & 0xff) << 25) | (insn & 0x1f00000) | ((insn & 0x7c00) << 5); |
| 11251 | irel->r_info = |
| 11252 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_TLS_LE_15S2); |
| 11253 | success = 1; |
| 11254 | break; |
| 11255 | } |
| 11256 | default: |
| 11257 | break; |
| 11258 | } |
| 11259 | |
| 11260 | if (success) |
| 11261 | { |
| 11262 | bfd_putb32 (insn, contents + laddr); |
| 11263 | if (i1_irelfn != irelend) |
| 11264 | { |
| 11265 | i1_irelfn->r_addend |= 1; |
| 11266 | *again = TRUE; |
| 11267 | } |
| 11268 | } |
| 11269 | } |
| 11270 | |
| 11271 | /* Relax PTR relocation for nds32_elf_relax_section. */ |
| 11272 | |
| 11273 | static bfd_boolean |
| 11274 | nds32_elf_relax_ptr (bfd *abfd, asection *sec, Elf_Internal_Rela *irel, |
| 11275 | Elf_Internal_Rela *internal_relocs, int *insn_len, |
| 11276 | int *seq_len, bfd_byte *contents) |
| 11277 | { |
| 11278 | Elf_Internal_Rela *ptr_irel, *irelend, *count_irel, *re_irel; |
| 11279 | |
| 11280 | irelend = internal_relocs + sec->reloc_count; |
| 11281 | |
| 11282 | re_irel = |
| 11283 | find_relocs_at_address_addr (irel, internal_relocs, irelend, |
| 11284 | R_NDS32_PTR_RESOLVED, irel->r_addend); |
| 11285 | |
| 11286 | if (re_irel == irelend) |
| 11287 | { |
| 11288 | (*_bfd_error_handler) |
| 11289 | ("%B: warning: R_NDS32_PTR points to unrecognized reloc at 0x%lx.", |
| 11290 | abfd, (long) irel->r_offset); |
| 11291 | return FALSE; |
| 11292 | } |
| 11293 | |
| 11294 | if (re_irel->r_addend != 1) |
| 11295 | return FALSE; |
| 11296 | |
| 11297 | /* Pointed target is relaxed and no longer needs this void *, |
| 11298 | change the type to NONE. */ |
| 11299 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 11300 | |
| 11301 | /* Find PTR_COUNT to decide remove it or not. If PTR_COUNT does |
| 11302 | not exist, it means only count 1 and remove it directly. */ |
| 11303 | /* TODO: I hope we can obsolate R_NDS32_COUNT in the future. */ |
| 11304 | count_irel = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11305 | R_NDS32_PTR_COUNT); |
| 11306 | ptr_irel = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11307 | R_NDS32_PTR); |
| 11308 | if (count_irel != irelend) |
| 11309 | { |
| 11310 | if (--count_irel->r_addend > 0) |
| 11311 | return FALSE; |
| 11312 | } |
| 11313 | |
| 11314 | if (ptr_irel != irelend) |
| 11315 | return FALSE; |
| 11316 | |
| 11317 | /* If the PTR_COUNT is already 0, remove current instruction. */ |
| 11318 | *seq_len = nds32_elf_insn_size (abfd, contents, irel->r_offset); |
| 11319 | *insn_len = 0; |
| 11320 | return TRUE; |
| 11321 | } |
| 11322 | |
| 11323 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ |
| 11324 | |
| 11325 | static void |
| 11326 | nds32_elf_relax_pltgot_suff (struct bfd_link_info *link_info, bfd *abfd, |
| 11327 | asection *sec, Elf_Internal_Rela *irel, |
| 11328 | Elf_Internal_Rela *internal_relocs, |
| 11329 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11330 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) |
| 11331 | { |
| 11332 | uint32_t insn; |
| 11333 | bfd_signed_vma foff; |
| 11334 | Elf_Internal_Rela *i1_irelfn, *irelend; |
| 11335 | bfd_vma local_sda, laddr; |
| 11336 | |
| 11337 | irelend = internal_relocs + sec->reloc_count; |
| 11338 | laddr = irel->r_offset; |
| 11339 | insn = bfd_getb32 (contents + laddr); |
| 11340 | |
| 11341 | /* FIXME: It's a little trouble to turn JRAL5 to JAL since |
| 11342 | we need additional space. It might be help if we could |
| 11343 | borrow some space from instructions to be eliminated |
| 11344 | such as sethi, ori, add. */ |
| 11345 | if (insn & 0x80000000) |
| 11346 | return; |
| 11347 | |
| 11348 | if (nds32_elf_check_dup_relocs |
| 11349 | (irel, internal_relocs, irelend, R_NDS32_PLT_GOT_SUFF)) |
| 11350 | return; |
| 11351 | |
| 11352 | i1_irelfn = |
| 11353 | find_relocs_at_address (irel, internal_relocs, irelend, |
| 11354 | R_NDS32_PTR_RESOLVED); |
| 11355 | |
| 11356 | /* FIXIT 090606 |
| 11357 | The boundary should be reduced since the .plt section hasn't |
| 11358 | been created and the address of specific entry is still unknown |
| 11359 | Maybe the range between the function call and the begin of the |
| 11360 | .text section can be used to decide if the .plt is in the range |
| 11361 | of function call. */ |
| 11362 | |
| 11363 | if (N32_OP6 (insn) == N32_OP6_ALU1 |
| 11364 | && N32_SUB5 (insn) == N32_ALU1_ADD) |
| 11365 | { |
| 11366 | /* Get the value of the symbol referred to by the reloc. */ |
| 11367 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 11368 | &local_sda, FALSE); |
| 11369 | foff = (bfd_signed_vma) (calculate_plt_memory_address |
| 11370 | (abfd, link_info, isymbuf, irel, |
| 11371 | symtab_hdr) - local_sda); |
| 11372 | /* This condition only happened when symbol is undefined. */ |
| 11373 | if (foff == 0) |
| 11374 | return; |
| 11375 | |
| 11376 | if (foff < -CONSERVATIVE_19BIT || foff >= CONSERVATIVE_19BIT) |
| 11377 | return; |
| 11378 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 11379 | R_NDS32_PLT_GOTREL_LO19); |
| 11380 | /* addi.gp */ |
| 11381 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); |
| 11382 | } |
| 11383 | else if (N32_OP6 (insn) == N32_OP6_JREG |
| 11384 | && N32_SUB5 (insn) == N32_JREG_JRAL) |
| 11385 | { |
| 11386 | /* Get the value of the symbol referred to by the reloc. */ |
| 11387 | foff = |
| 11388 | calculate_plt_offset (abfd, sec, link_info, isymbuf, irel, symtab_hdr); |
| 11389 | /* This condition only happened when symbol is undefined. */ |
| 11390 | if (foff == 0) |
| 11391 | return; |
| 11392 | if (foff < -CONSERVATIVE_24BIT_S1 || foff >= CONSERVATIVE_24BIT_S1) |
| 11393 | return; |
| 11394 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_25_PLTREL); |
| 11395 | insn = INSN_JAL; |
| 11396 | } |
| 11397 | else |
| 11398 | return; |
| 11399 | |
| 11400 | bfd_putb32 (insn, contents + laddr); |
| 11401 | if (i1_irelfn != irelend) |
| 11402 | { |
| 11403 | i1_irelfn->r_addend |= 1; |
| 11404 | *again = TRUE; |
| 11405 | } |
| 11406 | } |
| 11407 | |
| 11408 | /* Relax GOT_SUFF relocation for nds32_elf_relax_section. */ |
| 11409 | |
| 11410 | static void |
| 11411 | nds32_elf_relax_got_suff (struct bfd_link_info *link_info, bfd *abfd, |
| 11412 | asection *sec, Elf_Internal_Rela *irel, |
| 11413 | Elf_Internal_Rela *internal_relocs, |
| 11414 | bfd_byte *contents, Elf_Internal_Shdr *symtab_hdr, |
| 11415 | bfd_boolean *again) |
| 11416 | { |
| 11417 | uint32_t insn; |
| 11418 | bfd_signed_vma foff; |
| 11419 | Elf_Internal_Rela *i1_irelfn, *irelend; |
| 11420 | bfd_vma local_sda, laddr; |
| 11421 | |
| 11422 | irelend = internal_relocs + sec->reloc_count; |
| 11423 | laddr = irel->r_offset; |
| 11424 | insn = bfd_getb32 (contents + laddr); |
| 11425 | if (insn & 0x80000000) |
| 11426 | return; |
| 11427 | |
| 11428 | if (nds32_elf_check_dup_relocs |
| 11429 | (irel, internal_relocs, irelend, R_NDS32_GOT_SUFF)) |
| 11430 | return; |
| 11431 | |
| 11432 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11433 | R_NDS32_PTR_RESOLVED); |
| 11434 | |
| 11435 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 11436 | &local_sda, FALSE); |
| 11437 | foff = calculate_got_memory_address (abfd, link_info, irel, |
| 11438 | symtab_hdr) - local_sda; |
| 11439 | |
| 11440 | if (foff < CONSERVATIVE_19BIT && foff >= -CONSERVATIVE_19BIT) |
| 11441 | { |
| 11442 | /* Turn LW to LWI.GP. Change relocation type to R_NDS32_GOT_REL. */ |
| 11443 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); |
| 11444 | irel->r_info = |
| 11445 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_GOT17S2_RELA); |
| 11446 | bfd_putb32 (insn, contents + laddr); |
| 11447 | if (i1_irelfn != irelend) |
| 11448 | { |
| 11449 | i1_irelfn->r_addend |= 1; |
| 11450 | *again = TRUE; |
| 11451 | } |
| 11452 | } |
| 11453 | } |
| 11454 | |
| 11455 | /* Relax PLT_GOT_SUFF relocation for nds32_elf_relax_section. */ |
| 11456 | |
| 11457 | static void |
| 11458 | nds32_elf_relax_gotoff_suff (struct bfd_link_info *link_info, bfd *abfd, |
| 11459 | asection *sec, Elf_Internal_Rela *irel, |
| 11460 | Elf_Internal_Rela *internal_relocs, |
| 11461 | bfd_byte *contents, Elf_Internal_Sym *isymbuf, |
| 11462 | Elf_Internal_Shdr *symtab_hdr, bfd_boolean *again) |
| 11463 | { |
| 11464 | int opc_insn_gotoff; |
| 11465 | uint32_t insn; |
| 11466 | bfd_signed_vma foff; |
| 11467 | Elf_Internal_Rela *i1_irelfn, *i2_irelfn, *irelend; |
| 11468 | bfd_vma local_sda, laddr; |
| 11469 | |
| 11470 | irelend = internal_relocs + sec->reloc_count; |
| 11471 | laddr = irel->r_offset; |
| 11472 | insn = bfd_getb32 (contents + laddr); |
| 11473 | |
| 11474 | if (insn & 0x80000000) |
| 11475 | return; |
| 11476 | |
| 11477 | if (nds32_elf_check_dup_relocs |
| 11478 | (irel, internal_relocs, irelend, R_NDS32_GOTOFF_SUFF)) |
| 11479 | return; |
| 11480 | |
| 11481 | i1_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11482 | R_NDS32_PTR_RESOLVED); |
| 11483 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 11484 | &local_sda, FALSE); |
| 11485 | foff = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 11486 | foff = foff - local_sda; |
| 11487 | |
| 11488 | if (foff >= CONSERVATIVE_19BIT || foff < -CONSERVATIVE_19BIT) |
| 11489 | return; |
| 11490 | |
| 11491 | /* Concatenate opcode and sub-opcode for switch case. |
| 11492 | It may be MEM or ALU1. */ |
| 11493 | opc_insn_gotoff = (N32_OP6 (insn) << 8) | (insn & 0xff); |
| 11494 | switch (opc_insn_gotoff) |
| 11495 | { |
| 11496 | case (N32_OP6_MEM << 8) | N32_MEM_LW: |
| 11497 | /* 4-byte aligned. */ |
| 11498 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (6, 17, 3)); |
| 11499 | irel->r_info = |
| 11500 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); |
| 11501 | break; |
| 11502 | case (N32_OP6_MEM << 8) | N32_MEM_SW: |
| 11503 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __MF (7, 17, 3)); |
| 11504 | irel->r_info = |
| 11505 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA17S2_RELA); |
| 11506 | break; |
| 11507 | case (N32_OP6_MEM << 8) | N32_MEM_LH: |
| 11508 | /* 2-byte aligned. */ |
| 11509 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), 0); |
| 11510 | irel->r_info = |
| 11511 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); |
| 11512 | break; |
| 11513 | case (N32_OP6_MEM << 8) | N32_MEM_LHS: |
| 11514 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (18)); |
| 11515 | irel->r_info = |
| 11516 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); |
| 11517 | break; |
| 11518 | case (N32_OP6_MEM << 8) | N32_MEM_SH: |
| 11519 | insn = N32_TYPE1 (HWGP, N32_RT5 (insn), __BIT (19)); |
| 11520 | irel->r_info = |
| 11521 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA18S1_RELA); |
| 11522 | break; |
| 11523 | case (N32_OP6_MEM << 8) | N32_MEM_LB: |
| 11524 | /* 1-byte aligned. */ |
| 11525 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), 0); |
| 11526 | irel->r_info = |
| 11527 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); |
| 11528 | break; |
| 11529 | case (N32_OP6_MEM << 8) | N32_MEM_LBS: |
| 11530 | insn = N32_TYPE1 (LBGP, N32_RT5 (insn), __BIT (19)); |
| 11531 | irel->r_info = |
| 11532 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); |
| 11533 | break; |
| 11534 | case (N32_OP6_MEM << 8) | N32_MEM_SB: |
| 11535 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), 0); |
| 11536 | irel->r_info = |
| 11537 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); |
| 11538 | break; |
| 11539 | case (N32_OP6_ALU1 << 8) | N32_ALU1_ADD: |
| 11540 | insn = N32_TYPE1 (SBGP, N32_RT5 (insn), __BIT (19)); |
| 11541 | irel->r_info = |
| 11542 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_SDA19S0_RELA); |
| 11543 | break; |
| 11544 | default: |
| 11545 | return; |
| 11546 | } |
| 11547 | |
| 11548 | bfd_putb32 (insn, contents + laddr); |
| 11549 | if (i1_irelfn != irelend) |
| 11550 | { |
| 11551 | i1_irelfn->r_addend |= 1; |
| 11552 | *again = TRUE; |
| 11553 | } |
| 11554 | if ((i2_irelfn = find_relocs_at_address (irel, internal_relocs, irelend, |
| 11555 | R_NDS32_INSN16)) != irelend) |
| 11556 | i2_irelfn->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 11557 | |
| 11558 | } |
| 11559 | |
| 11560 | static bfd_boolean |
| 11561 | nds32_relax_adjust_label (bfd *abfd, asection *sec, |
| 11562 | Elf_Internal_Rela *internal_relocs, |
| 11563 | bfd_byte *contents, |
| 11564 | nds32_elf_blank_t **relax_blank_list, |
| 11565 | int optimize, int opt_size) |
| 11566 | { |
| 11567 | /* This code block is used to adjust 4-byte alignment by relax a pair |
| 11568 | of instruction a time. |
| 11569 | |
| 11570 | It recognizes three types of relocations. |
| 11571 | 1. R_NDS32_LABEL - a aligment. |
| 11572 | 2. R_NDS32_INSN16 - relax a 32-bit instruction to 16-bit. |
| 11573 | 3. is_16bit_NOP () - remove a 16-bit instruction. */ |
| 11574 | |
| 11575 | /* TODO: It seems currently implementation only support 4-byte aligment. |
| 11576 | We should handle any-aligment. */ |
| 11577 | |
| 11578 | Elf_Internal_Rela *insn_rel = NULL, *label_rel = NULL, *irel; |
| 11579 | Elf_Internal_Rela *tmp_rel, *tmp2_rel = NULL; |
| 11580 | Elf_Internal_Rela rel_temp; |
| 11581 | Elf_Internal_Rela *irelend; |
| 11582 | bfd_vma address; |
| 11583 | uint16_t insn16; |
| 11584 | |
| 11585 | /* Checking for branch relaxation relies on the relocations to |
| 11586 | be sorted on 'r_offset'. This is not guaranteed so we must sort. */ |
| 11587 | nds32_insertion_sort (internal_relocs, sec->reloc_count, |
| 11588 | sizeof (Elf_Internal_Rela), compar_reloc); |
| 11589 | |
| 11590 | irelend = internal_relocs + sec->reloc_count; |
| 11591 | |
| 11592 | /* Force R_NDS32_LABEL before R_NDS32_INSN16. */ |
| 11593 | /* FIXME: Can we generate the right order in assembler? |
| 11594 | So we don't have to swapping them here. */ |
| 11595 | |
| 11596 | for (label_rel = internal_relocs, insn_rel = internal_relocs; |
| 11597 | label_rel < irelend; label_rel++) |
| 11598 | { |
| 11599 | if (ELF32_R_TYPE (label_rel->r_info) != R_NDS32_LABEL) |
| 11600 | continue; |
| 11601 | |
| 11602 | /* Find the first reloc has the same offset with label_rel. */ |
| 11603 | while (insn_rel < irelend && insn_rel->r_offset < label_rel->r_offset) |
| 11604 | insn_rel++; |
| 11605 | |
| 11606 | for (;insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset; |
| 11607 | insn_rel++) |
| 11608 | /* Check if there were R_NDS32_INSN16 and R_NDS32_LABEL at the same |
| 11609 | address. */ |
| 11610 | if (ELF32_R_TYPE (insn_rel->r_info) == R_NDS32_INSN16) |
| 11611 | break; |
| 11612 | |
| 11613 | if (insn_rel < irelend && insn_rel->r_offset == label_rel->r_offset |
| 11614 | && insn_rel < label_rel) |
| 11615 | { |
| 11616 | /* Swap the two reloc if the R_NDS32_INSN16 is |
| 11617 | before R_NDS32_LABEL. */ |
| 11618 | memcpy (&rel_temp, insn_rel, sizeof (Elf_Internal_Rela)); |
| 11619 | memcpy (insn_rel, label_rel, sizeof (Elf_Internal_Rela)); |
| 11620 | memcpy (label_rel, &rel_temp, sizeof (Elf_Internal_Rela)); |
| 11621 | } |
| 11622 | } |
| 11623 | |
| 11624 | label_rel = NULL; |
| 11625 | insn_rel = NULL; |
| 11626 | /* If there were a sequence of R_NDS32_LABEL end up with .align 2 |
| 11627 | or higher, remove other R_NDS32_LABEL with lower alignment. |
| 11628 | If an R_NDS32_INSN16 in between R_NDS32_LABELs must be converted, |
| 11629 | then the R_NDS32_LABEL sequence is broke. */ |
| 11630 | for (tmp_rel = internal_relocs; tmp_rel < irelend; tmp_rel++) |
| 11631 | { |
| 11632 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_LABEL) |
| 11633 | { |
| 11634 | if (label_rel == NULL) |
| 11635 | { |
| 11636 | if (tmp_rel->r_addend < 2) |
| 11637 | label_rel = tmp_rel; |
| 11638 | continue; |
| 11639 | } |
| 11640 | else if (tmp_rel->r_addend > 1) |
| 11641 | { |
| 11642 | /* Remove all LABEL relocation from label_rel to tmp_rel |
| 11643 | including relocations with same offset as tmp_rel. */ |
| 11644 | for (tmp2_rel = label_rel; tmp2_rel < tmp_rel |
| 11645 | || tmp2_rel->r_offset == tmp_rel->r_offset; tmp2_rel++) |
| 11646 | { |
| 11647 | if (ELF32_R_TYPE (tmp2_rel->r_info) == R_NDS32_LABEL |
| 11648 | && tmp2_rel->r_addend < 2) |
| 11649 | tmp2_rel->r_info = |
| 11650 | ELF32_R_INFO (ELF32_R_SYM (tmp2_rel->r_info), |
| 11651 | R_NDS32_NONE); |
| 11652 | } |
| 11653 | label_rel = NULL; |
| 11654 | } |
| 11655 | } |
| 11656 | else if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 && label_rel) |
| 11657 | { |
| 11658 | /* A new INSN16 which can be converted, so clear label_rel. */ |
| 11659 | if (is_convert_32_to_16 (abfd, sec, tmp_rel, internal_relocs, |
| 11660 | irelend, &insn16) |
| 11661 | || is_16bit_NOP (abfd, sec, tmp_rel)) |
| 11662 | label_rel = NULL; |
| 11663 | } |
| 11664 | } |
| 11665 | |
| 11666 | label_rel = NULL; |
| 11667 | insn_rel = NULL; |
| 11668 | /* Optimized for speed and nothing has not been relaxed. |
| 11669 | It's time to align labels. |
| 11670 | We may convert a 16-bit instruction right before a label to |
| 11671 | 32-bit, in order to align the label if necessary |
| 11672 | all reloc entries has been sorted by r_offset. */ |
| 11673 | for (irel = internal_relocs; irel < irelend; irel++) |
| 11674 | { |
| 11675 | if (ELF32_R_TYPE (irel->r_info) != R_NDS32_INSN16 |
| 11676 | && ELF32_R_TYPE (irel->r_info) != R_NDS32_LABEL) |
| 11677 | continue; |
| 11678 | |
| 11679 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_INSN16) |
| 11680 | { |
| 11681 | /* A new INSN16 found, resize the old one. */ |
| 11682 | if (is_convert_32_to_16 |
| 11683 | (abfd, sec, irel, internal_relocs, irelend, &insn16) |
| 11684 | || is_16bit_NOP (abfd, sec, irel)) |
| 11685 | { |
| 11686 | if (insn_rel) |
| 11687 | { |
| 11688 | /* Previous INSN16 reloc exists, reduce its |
| 11689 | size to 16-bit. */ |
| 11690 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, |
| 11691 | irelend, &insn16)) |
| 11692 | { |
| 11693 | nds32_elf_write_16 (abfd, contents, insn_rel, |
| 11694 | internal_relocs, irelend, insn16); |
| 11695 | |
| 11696 | if (!insert_nds32_elf_blank_recalc_total |
| 11697 | (relax_blank_list, insn_rel->r_offset + 2, 2)) |
| 11698 | return FALSE; |
| 11699 | } |
| 11700 | else if (is_16bit_NOP (abfd, sec, insn_rel)) |
| 11701 | { |
| 11702 | if (!insert_nds32_elf_blank_recalc_total |
| 11703 | (relax_blank_list, insn_rel->r_offset, 2)) |
| 11704 | return FALSE; |
| 11705 | } |
| 11706 | insn_rel->r_info = |
| 11707 | ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), R_NDS32_NONE); |
| 11708 | } |
| 11709 | /* Save the new one for later use. */ |
| 11710 | insn_rel = irel; |
| 11711 | } |
| 11712 | else |
| 11713 | irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), |
| 11714 | R_NDS32_NONE); |
| 11715 | } |
| 11716 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL) |
| 11717 | { |
| 11718 | /* Search for label. */ |
| 11719 | int force_relax = 0; |
| 11720 | |
| 11721 | /* Label on 16-bit instruction or optimization |
| 11722 | needless, just reset this reloc. */ |
| 11723 | insn16 = bfd_getb16 (contents + irel->r_offset); |
| 11724 | if ((irel->r_addend & 0x1f) < 2 && (!optimize || (insn16 & 0x8000))) |
| 11725 | { |
| 11726 | irel->r_info = |
| 11727 | ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_NDS32_NONE); |
| 11728 | continue; |
| 11729 | } |
| 11730 | |
| 11731 | address = |
| 11732 | irel->r_offset - get_nds32_elf_blank_total (relax_blank_list, |
| 11733 | irel->r_offset, 1); |
| 11734 | |
| 11735 | if (!insn_rel) |
| 11736 | { |
| 11737 | /* Check if there is case which can not be aligned. */ |
| 11738 | if (irel->r_addend == 2 && address & 0x2) |
| 11739 | return FALSE; |
| 11740 | continue; |
| 11741 | } |
| 11742 | |
| 11743 | /* Try to align this label. */ |
| 11744 | |
| 11745 | if ((irel->r_addend & 0x1f) < 2) |
| 11746 | { |
| 11747 | /* Check if there is a INSN16 at the same address. |
| 11748 | Label_rel always seats before insn_rel after |
| 11749 | our sort. */ |
| 11750 | |
| 11751 | /* Search for INSN16 at LABEL location. If INSN16 is at |
| 11752 | same location and this LABEL alignment is lower than 2, |
| 11753 | the INSN16 can be converted to 2-byte. */ |
| 11754 | for (tmp_rel = irel; |
| 11755 | tmp_rel < irelend && tmp_rel->r_offset == irel->r_offset; |
| 11756 | tmp_rel++) |
| 11757 | { |
| 11758 | if (ELF32_R_TYPE (tmp_rel->r_info) == R_NDS32_INSN16 |
| 11759 | && (is_convert_32_to_16 |
| 11760 | (abfd, sec, tmp_rel, internal_relocs, |
| 11761 | irelend, &insn16) |
| 11762 | || is_16bit_NOP (abfd, sec, tmp_rel))) |
| 11763 | { |
| 11764 | force_relax = 1; |
| 11765 | break; |
| 11766 | } |
| 11767 | } |
| 11768 | } |
| 11769 | |
| 11770 | if (force_relax || irel->r_addend == 1 || address & 0x2) |
| 11771 | { |
| 11772 | /* Label not aligned. */ |
| 11773 | /* Previous reloc exists, reduce its size to 16-bit. */ |
| 11774 | if (is_convert_32_to_16 (abfd, sec, insn_rel, |
| 11775 | internal_relocs, irelend, &insn16)) |
| 11776 | { |
| 11777 | nds32_elf_write_16 (abfd, contents, insn_rel, |
| 11778 | internal_relocs, irelend, insn16); |
| 11779 | |
| 11780 | if (!insert_nds32_elf_blank_recalc_total |
| 11781 | (relax_blank_list, insn_rel->r_offset + 2, 2)) |
| 11782 | return FALSE; |
| 11783 | } |
| 11784 | else if (is_16bit_NOP (abfd, sec, insn_rel)) |
| 11785 | { |
| 11786 | if (!insert_nds32_elf_blank_recalc_total |
| 11787 | (relax_blank_list, insn_rel->r_offset, 2)) |
| 11788 | return FALSE; |
| 11789 | } |
| 11790 | |
| 11791 | } |
| 11792 | /* INSN16 reloc is used. */ |
| 11793 | insn_rel = NULL; |
| 11794 | } |
| 11795 | } |
| 11796 | |
| 11797 | address = |
| 11798 | sec->size - get_nds32_elf_blank_total (relax_blank_list, sec->size, 0); |
| 11799 | if (insn_rel && (address & 0x2 || opt_size)) |
| 11800 | { |
| 11801 | if (is_convert_32_to_16 (abfd, sec, insn_rel, internal_relocs, |
| 11802 | irelend, &insn16)) |
| 11803 | { |
| 11804 | nds32_elf_write_16 (abfd, contents, insn_rel, internal_relocs, |
| 11805 | irelend, insn16); |
| 11806 | if (!insert_nds32_elf_blank_recalc_total |
| 11807 | (relax_blank_list, insn_rel->r_offset + 2, 2)) |
| 11808 | return FALSE; |
| 11809 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), |
| 11810 | R_NDS32_NONE); |
| 11811 | } |
| 11812 | else if (is_16bit_NOP (abfd, sec, insn_rel)) |
| 11813 | { |
| 11814 | if (!insert_nds32_elf_blank_recalc_total |
| 11815 | (relax_blank_list, insn_rel->r_offset, 2)) |
| 11816 | return FALSE; |
| 11817 | insn_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (insn_rel->r_info), |
| 11818 | R_NDS32_NONE); |
| 11819 | } |
| 11820 | } |
| 11821 | insn_rel = NULL; |
| 11822 | return TRUE; |
| 11823 | } |
| 11824 | |
| 11825 | /* Pick relaxation round. */ |
| 11826 | |
| 11827 | static int |
| 11828 | nds32_elf_pick_relax (bfd_boolean init, asection *sec, bfd_boolean *again, |
| 11829 | struct elf_nds32_link_hash_table *table, |
| 11830 | struct bfd_link_info *link_info) |
| 11831 | { |
| 11832 | static asection *final_sec, *first_sec = NULL; |
| 11833 | static bfd_boolean normal_again = FALSE; |
| 11834 | static bfd_boolean set = FALSE; |
| 11835 | static bfd_boolean first = TRUE; |
| 11836 | int round_table[] = { |
| 11837 | NDS32_RELAX_NORMAL_ROUND, |
| 11838 | NDS32_RELAX_JUMP_IFC_ROUND, |
| 11839 | NDS32_RELAX_EX9_BUILD_ROUND, |
| 11840 | NDS32_RELAX_EX9_REPLACE_ROUND, |
| 11841 | }; |
| 11842 | static int pass = 0; |
| 11843 | static int relax_round; |
| 11844 | |
| 11845 | /* The new round. */ |
| 11846 | if (init && first_sec == sec) |
| 11847 | { |
| 11848 | set = TRUE; |
| 11849 | normal_again = FALSE; |
| 11850 | } |
| 11851 | |
| 11852 | if (first) |
| 11853 | { |
| 11854 | /* Run an empty run to get the final section. */ |
| 11855 | relax_round = NDS32_RELAX_EMPTY_ROUND; |
| 11856 | |
| 11857 | /* It has to enter relax again because we can |
| 11858 | not make sure what the final turn is. */ |
| 11859 | *again = TRUE; |
| 11860 | |
| 11861 | first = FALSE; |
| 11862 | first_sec = sec; |
| 11863 | } |
| 11864 | |
| 11865 | if (!set) |
| 11866 | { |
| 11867 | /* Not reenter yet. */ |
| 11868 | final_sec = sec; |
| 11869 | return relax_round; |
| 11870 | } |
| 11871 | |
| 11872 | relax_round = round_table[pass]; |
| 11873 | |
| 11874 | if (!init && relax_round == NDS32_RELAX_NORMAL_ROUND && *again) |
| 11875 | normal_again = TRUE; |
| 11876 | |
| 11877 | if (!init && final_sec == sec) |
| 11878 | { |
| 11879 | switch (relax_round) |
| 11880 | { |
| 11881 | case NDS32_RELAX_NORMAL_ROUND: |
| 11882 | if (!normal_again) |
| 11883 | { |
| 11884 | /* Normal relaxation done. */ |
| 11885 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) |
| 11886 | { |
| 11887 | pass++; |
| 11888 | *again = TRUE; |
| 11889 | } |
| 11890 | else if (table->target_optimize & NDS32_RELAX_EX9_ON) |
| 11891 | { |
| 11892 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ |
| 11893 | *again = TRUE; |
| 11894 | } |
| 11895 | else if (table->ex9_import_file) |
| 11896 | { |
| 11897 | /* Import ex9 table. */ |
| 11898 | if (table->update_ex9_table) |
| 11899 | pass += 2; /* NDS32_RELAX_EX9_BUILD_ROUND */ |
| 11900 | else |
| 11901 | pass += 3; /* NDS32_RELAX_EX9_REPLACE_ROUND */ |
| 11902 | nds32_elf_ex9_import_table (link_info); |
| 11903 | *again = TRUE; |
| 11904 | } |
| 11905 | } |
| 11906 | break; |
| 11907 | case NDS32_RELAX_JUMP_IFC_ROUND: |
| 11908 | if (!nds32_elf_ifc_finish (link_info)) |
| 11909 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); |
| 11910 | if (table->target_optimize & NDS32_RELAX_EX9_ON) |
| 11911 | { |
| 11912 | pass++; |
| 11913 | *again = TRUE; |
| 11914 | } |
| 11915 | break; |
| 11916 | case NDS32_RELAX_EX9_BUILD_ROUND: |
| 11917 | nds32_elf_ex9_finish (link_info); |
| 11918 | pass++; |
| 11919 | *again = TRUE; |
| 11920 | break; |
| 11921 | case NDS32_RELAX_EX9_REPLACE_ROUND: |
| 11922 | if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) |
| 11923 | { |
| 11924 | /* Do jump IFC optimization again. */ |
| 11925 | if (!nds32_elf_ifc_finish (link_info)) |
| 11926 | (*_bfd_error_handler) (_("error: Jump IFC Fail.")); |
| 11927 | } |
| 11928 | break; |
| 11929 | default: |
| 11930 | break; |
| 11931 | } |
| 11932 | } |
| 11933 | |
| 11934 | return relax_round; |
| 11935 | } |
| 11936 | |
| 11937 | static bfd_boolean |
| 11938 | nds32_elf_relax_section (bfd *abfd, asection *sec, |
| 11939 | struct bfd_link_info *link_info, bfd_boolean *again) |
| 11940 | { |
| 11941 | nds32_elf_blank_t *relax_blank_list = NULL; |
| 11942 | Elf_Internal_Shdr *symtab_hdr; |
| 11943 | Elf_Internal_Rela *internal_relocs; |
| 11944 | Elf_Internal_Rela *irel; |
| 11945 | Elf_Internal_Rela *irelend; |
| 11946 | Elf_Internal_Sym *isymbuf = NULL; |
| 11947 | bfd_byte *contents = NULL; |
| 11948 | bfd_boolean result = TRUE; |
| 11949 | int optimize = 0; |
| 11950 | int opt_size = 0; |
| 11951 | uint32_t insn; |
| 11952 | uint16_t insn16; |
| 11953 | |
| 11954 | /* Target dependnet option. */ |
| 11955 | struct elf_nds32_link_hash_table *table; |
| 11956 | int load_store_relax; |
| 11957 | int relax_round; |
| 11958 | |
| 11959 | relax_blank_list = NULL; |
| 11960 | |
| 11961 | *again = FALSE; |
| 11962 | |
| 11963 | /* Nothing to do for |
| 11964 | * relocatable link or |
| 11965 | * non-relocatable section or |
| 11966 | * non-code section or |
| 11967 | * empty content or |
| 11968 | * no reloc entry. */ |
| 11969 | if (bfd_link_relocatable (link_info) |
| 11970 | || (sec->flags & SEC_RELOC) == 0 |
| 11971 | || (sec->flags & SEC_EXCLUDE) == 1 |
| 11972 | || (sec->flags & SEC_CODE) == 0 |
| 11973 | || sec->size == 0) |
| 11974 | return TRUE; |
| 11975 | |
| 11976 | /* 09.12.11 Workaround. */ |
| 11977 | /* We have to adjust align for R_NDS32_LABEL if needed. |
| 11978 | The adjust approach only can fix 2-byte align once. */ |
| 11979 | if (sec->alignment_power > 2) |
| 11980 | return TRUE; |
| 11981 | |
| 11982 | /* The optimization type to do. */ |
| 11983 | |
| 11984 | table = nds32_elf_hash_table (link_info); |
| 11985 | relax_round = nds32_elf_pick_relax (TRUE, sec, again, table, link_info); |
| 11986 | switch (relax_round) |
| 11987 | { |
| 11988 | case NDS32_RELAX_JUMP_IFC_ROUND: |
| 11989 | /* Here is the entrance of ifc jump relaxation. */ |
| 11990 | if (!nds32_elf_ifc_calc (link_info, abfd, sec)) |
| 11991 | return FALSE; |
| 11992 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); |
| 11993 | return TRUE; |
| 11994 | |
| 11995 | case NDS32_RELAX_EX9_BUILD_ROUND: |
| 11996 | /* Here is the entrance of ex9 relaxation. There are two pass of |
| 11997 | ex9 relaxation. The one is to traverse all instructions and build |
| 11998 | the hash table. The other one is to compare instructions and replace |
| 11999 | it by ex9.it. */ |
| 12000 | if (!nds32_elf_ex9_build_hash_table (abfd, sec, link_info)) |
| 12001 | return FALSE; |
| 12002 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); |
| 12003 | return TRUE; |
| 12004 | |
| 12005 | case NDS32_RELAX_EX9_REPLACE_ROUND: |
| 12006 | if (!nds32_elf_ex9_replace_instruction (link_info, abfd, sec)) |
| 12007 | return FALSE; |
| 12008 | return TRUE; |
| 12009 | |
| 12010 | case NDS32_RELAX_EMPTY_ROUND: |
| 12011 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); |
| 12012 | return TRUE; |
| 12013 | |
| 12014 | case NDS32_RELAX_NORMAL_ROUND: |
| 12015 | default: |
| 12016 | if (sec->reloc_count == 0) |
| 12017 | return TRUE; |
| 12018 | break; |
| 12019 | } |
| 12020 | |
| 12021 | /* The begining of general relaxation. */ |
| 12022 | |
| 12023 | if (is_SDA_BASE_set == 0) |
| 12024 | { |
| 12025 | bfd_vma gp; |
| 12026 | is_SDA_BASE_set = 1; |
| 12027 | nds32_elf_final_sda_base (sec->output_section->owner, link_info, |
| 12028 | &gp, FALSE); |
| 12029 | relax_range_measurement (abfd); |
| 12030 | } |
| 12031 | |
| 12032 | if (is_ITB_BASE_set == 0) |
| 12033 | { |
| 12034 | /* Set the _ITB_BASE_. */ |
| 12035 | if (!nds32_elf_ex9_itb_base (link_info)) |
| 12036 | { |
| 12037 | (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), abfd); |
| 12038 | bfd_set_error (bfd_error_bad_value); |
| 12039 | } |
| 12040 | } |
| 12041 | |
| 12042 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 12043 | /* Relocations MUST be kept in memory, because relaxation adjust them. */ |
| 12044 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
| 12045 | TRUE /* keep_memory */); |
| 12046 | if (internal_relocs == NULL) |
| 12047 | goto error_return; |
| 12048 | |
| 12049 | irelend = internal_relocs + sec->reloc_count; |
| 12050 | irel = find_relocs_at_address (internal_relocs, internal_relocs, |
| 12051 | irelend, R_NDS32_RELAX_ENTRY); |
| 12052 | |
| 12053 | if (irel == irelend) |
| 12054 | return TRUE; |
| 12055 | |
| 12056 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY) |
| 12057 | { |
| 12058 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG) |
| 12059 | { |
| 12060 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); |
| 12061 | return TRUE; |
| 12062 | } |
| 12063 | |
| 12064 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FLAG) |
| 12065 | optimize = 1; |
| 12066 | |
| 12067 | if (irel->r_addend & R_NDS32_RELAX_ENTRY_OPTIMIZE_FOR_SPACE_FLAG) |
| 12068 | opt_size = 1; |
| 12069 | } |
| 12070 | |
| 12071 | load_store_relax = table->load_store_relax; |
| 12072 | |
| 12073 | /* Get symbol table and section content. */ |
| 12074 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
| 12075 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
| 12076 | goto error_return; |
| 12077 | |
| 12078 | /* Do relax loop only when finalize is not done. |
| 12079 | Take care of relaxable relocs except INSN16. */ |
| 12080 | for (irel = internal_relocs; irel < irelend; irel++) |
| 12081 | { |
| 12082 | int seq_len; /* Original length of instruction sequence. */ |
| 12083 | int insn_len = 0; /* Final length of instruction sequence. */ |
| 12084 | bfd_boolean removed; |
| 12085 | |
| 12086 | insn = 0; |
| 12087 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 12088 | && (irel->r_addend & 0x1f) >= 2) |
| 12089 | optimize = 1; |
| 12090 | |
| 12091 | /* Relocation Types |
| 12092 | R_NDS32_LONGCALL1 53 |
| 12093 | R_NDS32_LONGCALL2 54 |
| 12094 | R_NDS32_LONGCALL3 55 |
| 12095 | R_NDS32_LONGJUMP1 56 |
| 12096 | R_NDS32_LONGJUMP2 57 |
| 12097 | R_NDS32_LONGJUMP3 58 |
| 12098 | R_NDS32_LOADSTORE 59 */ |
| 12099 | if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL1 |
| 12100 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LOADSTORE) |
| 12101 | seq_len = GET_SEQ_LEN (irel->r_addend); |
| 12102 | |
| 12103 | /* Relocation Types |
| 12104 | R_NDS32_LONGCALL4 107 |
| 12105 | R_NDS32_LONGCALL5 108 |
| 12106 | R_NDS32_LONGCALL6 109 |
| 12107 | R_NDS32_LONGJUMP4 110 |
| 12108 | R_NDS32_LONGJUMP5 111 |
| 12109 | R_NDS32_LONGJUMP6 112 |
| 12110 | R_NDS32_LONGJUMP7 113 */ |
| 12111 | else if (ELF32_R_TYPE (irel->r_info) >= R_NDS32_LONGCALL4 |
| 12112 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_LONGJUMP7) |
| 12113 | seq_len = 4; |
| 12114 | |
| 12115 | /* Relocation Types |
| 12116 | R_NDS32_LO12S0_RELA 30 |
| 12117 | R_NDS32_LO12S1_RELA 29 |
| 12118 | R_NDS32_LO12S2_RELA 28 |
| 12119 | R_NDS32_LO12S2_SP_RELA 71 |
| 12120 | R_NDS32_LO12S2_DP_RELA 70 |
| 12121 | R_NDS32_GOT_LO12 46 |
| 12122 | R_NDS32_GOTOFF_LO12 50 |
| 12123 | R_NDS32_PLTREL_LO12 65 |
| 12124 | R_NDS32_PLT_GOTREL_LO12 67 |
| 12125 | R_NDS32_17IFC_PCREL_RELA 96 |
| 12126 | R_NDS32_GOT_SUFF 193 |
| 12127 | R_NDS32_GOTOFF_SUFF 194 |
| 12128 | R_NDS32_PLT_GOT_SUFF 195 |
| 12129 | R_NDS32_MULCALL_SUFF 196 |
| 12130 | R_NDS32_PTR 197 */ |
| 12131 | else if ((ELF32_R_TYPE (irel->r_info) <= R_NDS32_LO12S0_RELA |
| 12132 | && ELF32_R_TYPE (irel->r_info) >= R_NDS32_LO12S2_RELA) |
| 12133 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_SP_RELA |
| 12134 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_DP_RELA |
| 12135 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOT_LO12 |
| 12136 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTOFF_LO12 |
| 12137 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_GOTPC_LO12 |
| 12138 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLTREL_LO12 |
| 12139 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_PLT_GOTREL_LO12 |
| 12140 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_GOT_SUFF |
| 12141 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_PTR) |
| 12142 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA |
| 12143 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LO12 |
| 12144 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_ADD |
| 12145 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_TLS_LE_LS) |
| 12146 | seq_len = 0; |
| 12147 | else |
| 12148 | continue; |
| 12149 | |
| 12150 | insn_len = seq_len; |
| 12151 | removed = FALSE; |
| 12152 | |
| 12153 | switch (ELF32_R_TYPE (irel->r_info)) |
| 12154 | { |
| 12155 | case R_NDS32_LONGCALL1: |
| 12156 | removed = nds32_elf_relax_longcall1 (abfd, sec, irel, internal_relocs, |
| 12157 | &insn_len, contents, isymbuf, |
| 12158 | symtab_hdr); |
| 12159 | break; |
| 12160 | case R_NDS32_LONGCALL2: |
| 12161 | removed = nds32_elf_relax_longcall2 (abfd, sec, irel, internal_relocs, |
| 12162 | &insn_len, contents, isymbuf, |
| 12163 | symtab_hdr); |
| 12164 | break; |
| 12165 | case R_NDS32_LONGCALL3: |
| 12166 | removed = nds32_elf_relax_longcall3 (abfd, sec, irel, internal_relocs, |
| 12167 | &insn_len, contents, isymbuf, |
| 12168 | symtab_hdr); |
| 12169 | break; |
| 12170 | case R_NDS32_LONGJUMP1: |
| 12171 | removed = nds32_elf_relax_longjump1 (abfd, sec, irel, internal_relocs, |
| 12172 | &insn_len, contents, isymbuf, |
| 12173 | symtab_hdr); |
| 12174 | break; |
| 12175 | case R_NDS32_LONGJUMP2: |
| 12176 | removed = nds32_elf_relax_longjump2 (abfd, sec, irel, internal_relocs, |
| 12177 | &insn_len, contents, isymbuf, |
| 12178 | symtab_hdr); |
| 12179 | break; |
| 12180 | case R_NDS32_LONGJUMP3: |
| 12181 | removed = nds32_elf_relax_longjump3 (abfd, sec, irel, internal_relocs, |
| 12182 | &insn_len, contents, isymbuf, |
| 12183 | symtab_hdr); |
| 12184 | break; |
| 12185 | case R_NDS32_LONGCALL4: |
| 12186 | removed = nds32_elf_relax_longcall4 (abfd, sec, irel, internal_relocs, |
| 12187 | &insn_len, contents, isymbuf, |
| 12188 | symtab_hdr); |
| 12189 | break; |
| 12190 | case R_NDS32_LONGCALL5: |
| 12191 | removed = nds32_elf_relax_longcall5 (abfd, sec, irel, internal_relocs, |
| 12192 | &insn_len, contents, isymbuf, |
| 12193 | symtab_hdr); |
| 12194 | break; |
| 12195 | case R_NDS32_LONGCALL6: |
| 12196 | removed = nds32_elf_relax_longcall6 (abfd, sec, irel, internal_relocs, |
| 12197 | &insn_len, contents, isymbuf, |
| 12198 | symtab_hdr); |
| 12199 | break; |
| 12200 | case R_NDS32_LONGJUMP4: |
| 12201 | removed = nds32_elf_relax_longjump4 (abfd, sec, irel, internal_relocs, |
| 12202 | &insn_len, contents, isymbuf, |
| 12203 | symtab_hdr); |
| 12204 | break; |
| 12205 | case R_NDS32_LONGJUMP5: |
| 12206 | removed = nds32_elf_relax_longjump5 (abfd, sec, irel, internal_relocs, |
| 12207 | &insn_len, &seq_len, contents, |
| 12208 | isymbuf, symtab_hdr); |
| 12209 | break; |
| 12210 | case R_NDS32_LONGJUMP6: |
| 12211 | removed = nds32_elf_relax_longjump6 (abfd, sec, irel, internal_relocs, |
| 12212 | &insn_len, &seq_len, contents, |
| 12213 | isymbuf, symtab_hdr); |
| 12214 | break; |
| 12215 | case R_NDS32_LONGJUMP7: |
| 12216 | removed = nds32_elf_relax_longjump7 (abfd, sec, irel, internal_relocs, |
| 12217 | &insn_len, &seq_len, contents, |
| 12218 | isymbuf, symtab_hdr); |
| 12219 | break; |
| 12220 | case R_NDS32_LOADSTORE: |
| 12221 | removed = nds32_elf_relax_loadstore (link_info, abfd, sec, irel, |
| 12222 | internal_relocs, &insn_len, |
| 12223 | contents, isymbuf, symtab_hdr, |
| 12224 | load_store_relax); |
| 12225 | break; |
| 12226 | case R_NDS32_LO12S0_RELA: |
| 12227 | case R_NDS32_LO12S1_RELA: |
| 12228 | case R_NDS32_LO12S2_DP_RELA: |
| 12229 | case R_NDS32_LO12S2_SP_RELA: |
| 12230 | case R_NDS32_LO12S2_RELA: |
| 12231 | /* Relax for low part. */ |
| 12232 | nds32_elf_relax_lo12 (link_info, abfd, sec, irel, internal_relocs, |
| 12233 | contents, isymbuf, symtab_hdr); |
| 12234 | |
| 12235 | /* It is impossible to delete blank, so just continue. */ |
| 12236 | continue; |
| 12237 | case R_NDS32_GOT_LO12: |
| 12238 | case R_NDS32_GOTOFF_LO12: |
| 12239 | case R_NDS32_PLTREL_LO12: |
| 12240 | case R_NDS32_PLT_GOTREL_LO12: |
| 12241 | case R_NDS32_GOTPC_LO12: |
| 12242 | /* Relax for PIC gp-relative low part. */ |
| 12243 | nds32_elf_relax_piclo12 (link_info, abfd, sec, irel, contents, |
| 12244 | isymbuf, symtab_hdr); |
| 12245 | |
| 12246 | /* It is impossible to delete blank, so just continue. */ |
| 12247 | continue; |
| 12248 | case R_NDS32_TLS_LE_LO12: |
| 12249 | /* Relax for LE TLS low part. */ |
| 12250 | nds32_elf_relax_letlslo12 (link_info, abfd, irel, contents, |
| 12251 | isymbuf, symtab_hdr); |
| 12252 | |
| 12253 | /* It is impossible to delete blank, so just continue. */ |
| 12254 | continue; |
| 12255 | case R_NDS32_TLS_LE_ADD: |
| 12256 | nds32_elf_relax_letlsadd (link_info, abfd, sec, irel, internal_relocs, |
| 12257 | contents, isymbuf, symtab_hdr, again); |
| 12258 | /* It is impossible to delete blank, so just continue. */ |
| 12259 | continue; |
| 12260 | case R_NDS32_TLS_LE_LS: |
| 12261 | nds32_elf_relax_letlsls (link_info, abfd, sec, irel, internal_relocs, |
| 12262 | contents, isymbuf, symtab_hdr, again); |
| 12263 | continue; |
| 12264 | case R_NDS32_PTR: |
| 12265 | removed = nds32_elf_relax_ptr (abfd, sec, irel, internal_relocs, |
| 12266 | &insn_len, &seq_len, contents); |
| 12267 | break; |
| 12268 | case R_NDS32_PLT_GOT_SUFF: |
| 12269 | nds32_elf_relax_pltgot_suff (link_info, abfd, sec, irel, |
| 12270 | internal_relocs, contents, |
| 12271 | isymbuf, symtab_hdr, again); |
| 12272 | /* It is impossible to delete blank, so just continue. */ |
| 12273 | continue; |
| 12274 | case R_NDS32_GOT_SUFF: |
| 12275 | nds32_elf_relax_got_suff (link_info, abfd, sec, irel, |
| 12276 | internal_relocs, contents, |
| 12277 | symtab_hdr, again); |
| 12278 | /* It is impossible to delete blank, so just continue. */ |
| 12279 | continue; |
| 12280 | case R_NDS32_GOTOFF_SUFF: |
| 12281 | nds32_elf_relax_gotoff_suff (link_info, abfd, sec, irel, |
| 12282 | internal_relocs, contents, |
| 12283 | isymbuf, symtab_hdr, again); |
| 12284 | /* It is impossible to delete blank, so just continue. */ |
| 12285 | continue; |
| 12286 | default: |
| 12287 | continue; |
| 12288 | |
| 12289 | } |
| 12290 | if (removed && seq_len - insn_len > 0) |
| 12291 | { |
| 12292 | if (!insert_nds32_elf_blank |
| 12293 | (&relax_blank_list, irel->r_offset + insn_len, |
| 12294 | seq_len - insn_len)) |
| 12295 | goto error_return; |
| 12296 | *again = TRUE; |
| 12297 | } |
| 12298 | } |
| 12299 | |
| 12300 | calc_nds32_blank_total (relax_blank_list); |
| 12301 | |
| 12302 | if (table->relax_fp_as_gp) |
| 12303 | { |
| 12304 | if (!nds32_relax_fp_as_gp (link_info, abfd, sec, internal_relocs, |
| 12305 | irelend, isymbuf)) |
| 12306 | goto error_return; |
| 12307 | |
| 12308 | if (*again == FALSE) |
| 12309 | { |
| 12310 | if (!nds32_fag_remove_unused_fpbase (abfd, sec, internal_relocs, |
| 12311 | irelend)) |
| 12312 | goto error_return; |
| 12313 | } |
| 12314 | } |
| 12315 | |
| 12316 | nds32_elf_pick_relax (FALSE, sec, again, table, link_info); |
| 12317 | |
| 12318 | if (*again == FALSE) |
| 12319 | { |
| 12320 | if (!nds32_relax_adjust_label (abfd, sec, internal_relocs, contents, |
| 12321 | &relax_blank_list, optimize, opt_size)) |
| 12322 | goto error_return; |
| 12323 | } |
| 12324 | |
| 12325 | /* It doesn't matter optimize_for_space_no_align anymore. |
| 12326 | If object file is assembled with flag '-Os', |
| 12327 | the we don't adjust jump-destination on 4-byte boundary. */ |
| 12328 | |
| 12329 | if (relax_blank_list) |
| 12330 | { |
| 12331 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); |
| 12332 | relax_blank_list = NULL; |
| 12333 | } |
| 12334 | |
| 12335 | if (*again == FALSE) |
| 12336 | { |
| 12337 | /* Closing the section, so we don't relax it anymore. */ |
| 12338 | bfd_vma sec_size_align; |
| 12339 | Elf_Internal_Rela *tmp_rel; |
| 12340 | |
| 12341 | /* Pad to alignment boundary. Only handle current section alignment. */ |
| 12342 | sec_size_align = (sec->size + (~((-1U) << sec->alignment_power))) |
| 12343 | & ((-1U) << sec->alignment_power); |
| 12344 | if ((sec_size_align - sec->size) & 0x2) |
| 12345 | { |
| 12346 | insn16 = NDS32_NOP16; |
| 12347 | bfd_putb16 (insn16, contents + sec->size); |
| 12348 | sec->size += 2; |
| 12349 | } |
| 12350 | |
| 12351 | while (sec_size_align != sec->size) |
| 12352 | { |
| 12353 | insn = NDS32_NOP32; |
| 12354 | bfd_putb32 (insn, contents + sec->size); |
| 12355 | sec->size += 4; |
| 12356 | } |
| 12357 | |
| 12358 | tmp_rel = find_relocs_at_address (internal_relocs, internal_relocs, |
| 12359 | irelend, R_NDS32_RELAX_ENTRY); |
| 12360 | if (tmp_rel != irelend) |
| 12361 | tmp_rel->r_addend |= R_NDS32_RELAX_ENTRY_DISABLE_RELAX_FLAG; |
| 12362 | |
| 12363 | clean_nds32_elf_blank (); |
| 12364 | } |
| 12365 | |
| 12366 | finish: |
| 12367 | if (internal_relocs != NULL |
| 12368 | && elf_section_data (sec)->relocs != internal_relocs) |
| 12369 | free (internal_relocs); |
| 12370 | |
| 12371 | if (contents != NULL |
| 12372 | && elf_section_data (sec)->this_hdr.contents != contents) |
| 12373 | free (contents); |
| 12374 | |
| 12375 | if (isymbuf != NULL && symtab_hdr->contents != (bfd_byte *) isymbuf) |
| 12376 | free (isymbuf); |
| 12377 | |
| 12378 | return result; |
| 12379 | |
| 12380 | error_return: |
| 12381 | result = FALSE; |
| 12382 | goto finish; |
| 12383 | } |
| 12384 | |
| 12385 | static struct bfd_elf_special_section const nds32_elf_special_sections[] = |
| 12386 | { |
| 12387 | {".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE}, |
| 12388 | {".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE}, |
| 12389 | {NULL, 0, 0, 0, 0} |
| 12390 | }; |
| 12391 | |
| 12392 | static bfd_boolean |
| 12393 | nds32_elf_output_arch_syms (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 12394 | struct bfd_link_info *info, |
| 12395 | void *finfo ATTRIBUTE_UNUSED, |
| 12396 | bfd_boolean (*func) (void *, const char *, |
| 12397 | Elf_Internal_Sym *, |
| 12398 | asection *, |
| 12399 | struct elf_link_hash_entry *) |
| 12400 | ATTRIBUTE_UNUSED) |
| 12401 | { |
| 12402 | FILE *sym_ld_script = NULL; |
| 12403 | struct elf_nds32_link_hash_table *table; |
| 12404 | |
| 12405 | table = nds32_elf_hash_table (info); |
| 12406 | sym_ld_script = table->sym_ld_script; |
| 12407 | |
| 12408 | if (check_start_export_sym) |
| 12409 | fprintf (sym_ld_script, "}\n"); |
| 12410 | |
| 12411 | return TRUE; |
| 12412 | } |
| 12413 | |
| 12414 | static enum elf_reloc_type_class |
| 12415 | nds32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 12416 | const asection *rel_sec ATTRIBUTE_UNUSED, |
| 12417 | const Elf_Internal_Rela *rela) |
| 12418 | { |
| 12419 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 12420 | { |
| 12421 | case R_NDS32_RELATIVE: |
| 12422 | return reloc_class_relative; |
| 12423 | case R_NDS32_JMP_SLOT: |
| 12424 | return reloc_class_plt; |
| 12425 | case R_NDS32_COPY: |
| 12426 | return reloc_class_copy; |
| 12427 | default: |
| 12428 | return reloc_class_normal; |
| 12429 | } |
| 12430 | } |
| 12431 | |
| 12432 | /* Put target dependent option into info hash table. */ |
| 12433 | void |
| 12434 | bfd_elf32_nds32_set_target_option (struct bfd_link_info *link_info, |
| 12435 | int relax_fp_as_gp, |
| 12436 | int eliminate_gc_relocs, |
| 12437 | FILE * sym_ld_script, int load_store_relax, |
| 12438 | int target_optimize, int relax_status, |
| 12439 | int relax_round, FILE * ex9_export_file, |
| 12440 | FILE * ex9_import_file, |
| 12441 | int update_ex9_table, int ex9_limit, |
| 12442 | bfd_boolean ex9_loop_aware, |
| 12443 | bfd_boolean ifc_loop_aware) |
| 12444 | { |
| 12445 | struct elf_nds32_link_hash_table *table; |
| 12446 | |
| 12447 | table = nds32_elf_hash_table (link_info); |
| 12448 | if (table == NULL) |
| 12449 | return; |
| 12450 | |
| 12451 | table->relax_fp_as_gp = relax_fp_as_gp; |
| 12452 | table->eliminate_gc_relocs = eliminate_gc_relocs; |
| 12453 | table->sym_ld_script = sym_ld_script; |
| 12454 | table ->load_store_relax = load_store_relax; |
| 12455 | table->target_optimize = target_optimize; |
| 12456 | table->relax_status = relax_status; |
| 12457 | table->relax_round = relax_round; |
| 12458 | table->ex9_export_file = ex9_export_file; |
| 12459 | table->ex9_import_file = ex9_import_file; |
| 12460 | table->update_ex9_table = update_ex9_table; |
| 12461 | table->ex9_limit = ex9_limit; |
| 12462 | table->ex9_loop_aware = ex9_loop_aware; |
| 12463 | table->ifc_loop_aware = ifc_loop_aware; |
| 12464 | } |
| 12465 | \f |
| 12466 | /* These functions and data-structures are used for fp-as-gp |
| 12467 | optimization. */ |
| 12468 | |
| 12469 | #define FAG_THRESHOLD 3 /* At least 3 gp-access. */ |
| 12470 | /* lwi37.fp covers 508 bytes, but there may be 32-byte padding between |
| 12471 | the read-only section and read-write section. */ |
| 12472 | #define FAG_WINDOW (508 - 32) |
| 12473 | |
| 12474 | /* An nds32_fag represent a gp-relative access. |
| 12475 | We find best fp-base by using a sliding window |
| 12476 | to find a base address which can cover most gp-access. */ |
| 12477 | struct nds32_fag |
| 12478 | { |
| 12479 | struct nds32_fag *next; /* NULL-teminated linked list. */ |
| 12480 | bfd_vma addr; /* The address of this fag. */ |
| 12481 | Elf_Internal_Rela **relas; /* The relocations associated with this fag. |
| 12482 | It is used for applying FP7U2_FLAG. */ |
| 12483 | int count; /* How many times this address is referred. |
| 12484 | There should be exactly `count' relocations |
| 12485 | in relas. */ |
| 12486 | int relas_capcity; /* The buffer size of relas. |
| 12487 | We use an array instead of linked-list, |
| 12488 | and realloc is used to adjust buffer size. */ |
| 12489 | }; |
| 12490 | |
| 12491 | static void |
| 12492 | nds32_fag_init (struct nds32_fag *head) |
| 12493 | { |
| 12494 | memset (head, 0, sizeof (struct nds32_fag)); |
| 12495 | } |
| 12496 | |
| 12497 | static void |
| 12498 | nds32_fag_verify (struct nds32_fag *head) |
| 12499 | { |
| 12500 | struct nds32_fag *iter; |
| 12501 | struct nds32_fag *prev; |
| 12502 | |
| 12503 | prev = NULL; |
| 12504 | iter = head->next; |
| 12505 | while (iter) |
| 12506 | { |
| 12507 | if (prev && prev->addr >= iter->addr) |
| 12508 | puts ("Bug in fp-as-gp insertion."); |
| 12509 | prev = iter; |
| 12510 | iter = iter->next; |
| 12511 | } |
| 12512 | } |
| 12513 | |
| 12514 | /* Insert a fag in ascending order. |
| 12515 | If a fag of the same address already exists, |
| 12516 | they are chained by relas array. */ |
| 12517 | |
| 12518 | static void |
| 12519 | nds32_fag_insert (struct nds32_fag *head, bfd_vma addr, |
| 12520 | Elf_Internal_Rela * rel) |
| 12521 | { |
| 12522 | struct nds32_fag *iter; |
| 12523 | struct nds32_fag *new_fag; |
| 12524 | const int INIT_RELAS_CAP = 4; |
| 12525 | |
| 12526 | for (iter = head; |
| 12527 | iter->next && iter->next->addr <= addr; |
| 12528 | iter = iter->next) |
| 12529 | /* Find somewhere to insert. */ ; |
| 12530 | |
| 12531 | /* `iter' will be equal to `head' if the list is empty. */ |
| 12532 | if (iter != head && iter->addr == addr) |
| 12533 | { |
| 12534 | /* The address exists in the list. |
| 12535 | Insert `rel' into relocation list, relas. */ |
| 12536 | |
| 12537 | /* Check whether relas is big enough. */ |
| 12538 | if (iter->count >= iter->relas_capcity) |
| 12539 | { |
| 12540 | iter->relas_capcity *= 2; |
| 12541 | iter->relas = bfd_realloc |
| 12542 | (iter->relas, iter->relas_capcity * sizeof (void *)); |
| 12543 | } |
| 12544 | iter->relas[iter->count++] = rel; |
| 12545 | return; |
| 12546 | } |
| 12547 | |
| 12548 | /* This is a new address. Create a fag node for it. */ |
| 12549 | new_fag = bfd_malloc (sizeof (struct nds32_fag)); |
| 12550 | memset (new_fag, 0, sizeof (*new_fag)); |
| 12551 | new_fag->addr = addr; |
| 12552 | new_fag->count = 1; |
| 12553 | new_fag->next = iter->next; |
| 12554 | new_fag->relas_capcity = INIT_RELAS_CAP; |
| 12555 | new_fag->relas = (Elf_Internal_Rela **) |
| 12556 | bfd_malloc (new_fag->relas_capcity * sizeof (void *)); |
| 12557 | new_fag->relas[0] = rel; |
| 12558 | iter->next = new_fag; |
| 12559 | |
| 12560 | nds32_fag_verify (head); |
| 12561 | } |
| 12562 | |
| 12563 | static void |
| 12564 | nds32_fag_free_list (struct nds32_fag *head) |
| 12565 | { |
| 12566 | struct nds32_fag *iter; |
| 12567 | |
| 12568 | iter = head->next; |
| 12569 | while (iter) |
| 12570 | { |
| 12571 | struct nds32_fag *tmp = iter; |
| 12572 | iter = iter->next; |
| 12573 | free (tmp->relas); |
| 12574 | tmp->relas = NULL; |
| 12575 | free (tmp); |
| 12576 | } |
| 12577 | } |
| 12578 | |
| 12579 | /* Find the best fp-base address. |
| 12580 | The relocation associated with that address is returned, |
| 12581 | so we can track the symbol instead of a fixed address. |
| 12582 | |
| 12583 | When relaxation, the address of an datum may change, |
| 12584 | because a text section is shrinked, so the data section |
| 12585 | moves forward. If the aligments of text and data section |
| 12586 | are different, their distance may change too. |
| 12587 | Therefore, tracking a fixed address is not appriate. */ |
| 12588 | |
| 12589 | static int |
| 12590 | nds32_fag_find_base (struct nds32_fag *head, struct nds32_fag **bestpp) |
| 12591 | { |
| 12592 | struct nds32_fag *base; /* First fag in the window. */ |
| 12593 | struct nds32_fag *last; /* First fag outside the window. */ |
| 12594 | int accu = 0; /* Usage accumulation. */ |
| 12595 | struct nds32_fag *best; /* Best fag. */ |
| 12596 | int baccu = 0; /* Best accumulation. */ |
| 12597 | |
| 12598 | /* Use first fag for initial, and find the last fag in the window. |
| 12599 | |
| 12600 | In each iteration, we could simply subtract previous fag |
| 12601 | and accumulate following fags which are inside the window, |
| 12602 | untill we each the end. */ |
| 12603 | |
| 12604 | if (head->next == NULL) |
| 12605 | { |
| 12606 | *bestpp = NULL; |
| 12607 | return 0; |
| 12608 | } |
| 12609 | |
| 12610 | /* Initialize base. */ |
| 12611 | base = head->next; |
| 12612 | best = base; |
| 12613 | for (last = base; |
| 12614 | last && last->addr < base->addr + FAG_WINDOW; |
| 12615 | last = last->next) |
| 12616 | accu += last->count; |
| 12617 | |
| 12618 | baccu = accu; |
| 12619 | |
| 12620 | /* Record the best base in each iteration. */ |
| 12621 | while (base->next) |
| 12622 | { |
| 12623 | accu -= base->count; |
| 12624 | base = base->next; |
| 12625 | /* Account fags in window. */ |
| 12626 | for (/* Nothing. */; |
| 12627 | last && last->addr < base->addr + FAG_WINDOW; |
| 12628 | last = last->next) |
| 12629 | accu += last->count; |
| 12630 | |
| 12631 | /* A better fp-base? */ |
| 12632 | if (accu > baccu) |
| 12633 | { |
| 12634 | best = base; |
| 12635 | baccu = accu; |
| 12636 | } |
| 12637 | } |
| 12638 | |
| 12639 | if (bestpp) |
| 12640 | *bestpp = best; |
| 12641 | return baccu; |
| 12642 | } |
| 12643 | |
| 12644 | /* Apply R_NDS32_INSN16_FP7U2_FLAG on gp-relative accesses, |
| 12645 | so we can convert it fo fp-relative access later. |
| 12646 | `best_fag' is the best fp-base. Only those inside the window |
| 12647 | of best_fag is applied the flag. */ |
| 12648 | |
| 12649 | static bfd_boolean |
| 12650 | nds32_fag_mark_relax (struct bfd_link_info *link_info, |
| 12651 | bfd *abfd, struct nds32_fag *best_fag, |
| 12652 | Elf_Internal_Rela *internal_relocs, |
| 12653 | Elf_Internal_Rela *irelend) |
| 12654 | { |
| 12655 | struct nds32_fag *ifag; |
| 12656 | bfd_vma best_fpbase, gp; |
| 12657 | bfd *output_bfd; |
| 12658 | |
| 12659 | output_bfd = abfd->sections->output_section->owner; |
| 12660 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); |
| 12661 | best_fpbase = best_fag->addr; |
| 12662 | |
| 12663 | if (best_fpbase > gp + sdata_range[1][1] |
| 12664 | || best_fpbase < gp - sdata_range[1][0]) |
| 12665 | return FALSE; |
| 12666 | |
| 12667 | /* Mark these inside the window R_NDS32_INSN16_FP7U2_FLAG flag, |
| 12668 | so we know they can be converted to lwi37.fp. */ |
| 12669 | for (ifag = best_fag; |
| 12670 | ifag && ifag->addr < best_fpbase + FAG_WINDOW; ifag = ifag->next) |
| 12671 | { |
| 12672 | int i; |
| 12673 | |
| 12674 | for (i = 0; i < ifag->count; i++) |
| 12675 | { |
| 12676 | Elf_Internal_Rela *insn16_rel; |
| 12677 | Elf_Internal_Rela *fag_rel; |
| 12678 | |
| 12679 | fag_rel = ifag->relas[i]; |
| 12680 | |
| 12681 | /* Only if this is within the WINDOWS, FP7U2_FLAG |
| 12682 | is applied. */ |
| 12683 | |
| 12684 | insn16_rel = find_relocs_at_address |
| 12685 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); |
| 12686 | |
| 12687 | if (insn16_rel != irelend) |
| 12688 | insn16_rel->r_addend = R_NDS32_INSN16_FP7U2_FLAG; |
| 12689 | } |
| 12690 | } |
| 12691 | return TRUE; |
| 12692 | } |
| 12693 | |
| 12694 | /* Reset INSN16 to clean fp as gp. */ |
| 12695 | |
| 12696 | static void |
| 12697 | nds32_fag_unmark_relax (struct nds32_fag *fag, |
| 12698 | Elf_Internal_Rela *internal_relocs, |
| 12699 | Elf_Internal_Rela *irelend) |
| 12700 | { |
| 12701 | struct nds32_fag *ifag; |
| 12702 | int i; |
| 12703 | Elf_Internal_Rela *insn16_rel; |
| 12704 | Elf_Internal_Rela *fag_rel; |
| 12705 | |
| 12706 | for (ifag = fag; ifag; ifag = ifag->next) |
| 12707 | { |
| 12708 | for (i = 0; i < ifag->count; i++) |
| 12709 | { |
| 12710 | fag_rel = ifag->relas[i]; |
| 12711 | |
| 12712 | /* Restore the INSN16 relocation. */ |
| 12713 | insn16_rel = find_relocs_at_address |
| 12714 | (fag_rel, internal_relocs, irelend, R_NDS32_INSN16); |
| 12715 | |
| 12716 | if (insn16_rel != irelend) |
| 12717 | insn16_rel->r_addend &= ~R_NDS32_INSN16_FP7U2_FLAG; |
| 12718 | } |
| 12719 | } |
| 12720 | } |
| 12721 | |
| 12722 | /* This is the main function of fp-as-gp optimization. |
| 12723 | It should be called by relax_section. */ |
| 12724 | |
| 12725 | static bfd_boolean |
| 12726 | nds32_relax_fp_as_gp (struct bfd_link_info *link_info, |
| 12727 | bfd *abfd, asection *sec, |
| 12728 | Elf_Internal_Rela *internal_relocs, |
| 12729 | Elf_Internal_Rela *irelend, |
| 12730 | Elf_Internal_Sym *isymbuf) |
| 12731 | { |
| 12732 | Elf_Internal_Rela *begin_rel = NULL; |
| 12733 | Elf_Internal_Rela *irel; |
| 12734 | struct nds32_fag fag_head; |
| 12735 | Elf_Internal_Shdr *symtab_hdr; |
| 12736 | bfd_byte *contents; |
| 12737 | bfd_boolean ifc_inside = FALSE; |
| 12738 | |
| 12739 | /* FIXME: Can we bfd_elf_link_read_relocs for the relocs? */ |
| 12740 | |
| 12741 | /* Per-function fp-base selection. |
| 12742 | 1. Create a list for all the gp-relative access. |
| 12743 | 2. Base on those gp-relative address, |
| 12744 | find a fp-base which can cover most access. |
| 12745 | 3. Use the fp-base for fp-as-gp relaxation. |
| 12746 | |
| 12747 | NOTE: If fp-as-gp is not worth to do, (e.g., less than 3 times), |
| 12748 | we should |
| 12749 | 1. delete the `la $fp, _FP_BASE_' instruction and |
| 12750 | 2. not convert lwi.gp to lwi37.fp. |
| 12751 | |
| 12752 | To delete the _FP_BASE_ instruction, we simply apply |
| 12753 | R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG flag in the r_addend to disable it. |
| 12754 | |
| 12755 | To suppress the conversion, we simply NOT to apply |
| 12756 | R_NDS32_INSN16_FP7U2_FLAG flag. */ |
| 12757 | |
| 12758 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 12759 | |
| 12760 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
| 12761 | || !nds32_get_local_syms (abfd, sec, &isymbuf)) |
| 12762 | return FALSE; |
| 12763 | |
| 12764 | /* Check whether it is worth for fp-as-gp optimization, |
| 12765 | i.e., at least 3 gp-load. |
| 12766 | |
| 12767 | Set R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG if we should NOT |
| 12768 | apply this optimization. */ |
| 12769 | |
| 12770 | for (irel = internal_relocs; irel < irelend; irel++) |
| 12771 | { |
| 12772 | /* We recognize R_NDS32_RELAX_REGION_BEGIN/_END for the region. |
| 12773 | One we enter the begin of the region, we track all the LW/ST |
| 12774 | instructions, so when we leave the region, we try to find |
| 12775 | the best fp-base address for those LW/ST instructions. */ |
| 12776 | |
| 12777 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
| 12778 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) |
| 12779 | { |
| 12780 | /* Begin of the region. */ |
| 12781 | if (begin_rel) |
| 12782 | (*_bfd_error_handler) (_("%B: Nested OMIT_FP in %A."), abfd, sec); |
| 12783 | |
| 12784 | begin_rel = irel; |
| 12785 | nds32_fag_init (&fag_head); |
| 12786 | ifc_inside = FALSE; |
| 12787 | } |
| 12788 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
| 12789 | && (irel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) |
| 12790 | { |
| 12791 | int accu; |
| 12792 | struct nds32_fag *best_fag, *tmp_fag; |
| 12793 | int dist; |
| 12794 | |
| 12795 | /* End of the region. |
| 12796 | Check whether it is worth to do fp-as-gp. */ |
| 12797 | |
| 12798 | if (begin_rel == NULL) |
| 12799 | { |
| 12800 | (*_bfd_error_handler) (_("%B: Unmatched OMIT_FP in %A."), abfd, sec); |
| 12801 | continue; |
| 12802 | } |
| 12803 | |
| 12804 | accu = nds32_fag_find_base (&fag_head, &best_fag); |
| 12805 | |
| 12806 | /* Clean FP7U2_FLAG because they may set ever. */ |
| 12807 | tmp_fag = fag_head.next; |
| 12808 | nds32_fag_unmark_relax (tmp_fag, internal_relocs, irelend); |
| 12809 | |
| 12810 | /* Check if it is worth, and FP_BASE is near enough to SDA_BASE. */ |
| 12811 | if (accu < FAG_THRESHOLD |
| 12812 | || !nds32_fag_mark_relax (link_info, abfd, best_fag, |
| 12813 | internal_relocs, irelend)) |
| 12814 | { |
| 12815 | /* Not worth to do fp-as-gp. */ |
| 12816 | begin_rel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; |
| 12817 | begin_rel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; |
| 12818 | irel->r_addend |= R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG; |
| 12819 | irel->r_addend &= ~R_NDS32_RELAX_REGION_OMIT_FP_FLAG; |
| 12820 | nds32_fag_free_list (&fag_head); |
| 12821 | begin_rel = NULL; |
| 12822 | continue; |
| 12823 | } |
| 12824 | |
| 12825 | /* R_SYM of R_NDS32_RELAX_REGION_BEGIN is not used by assembler, |
| 12826 | so we use it to record the distance to the reloction of best |
| 12827 | fp-base. */ |
| 12828 | dist = best_fag->relas[0] - begin_rel; |
| 12829 | BFD_ASSERT (dist > 0 && dist < 0xffffff); |
| 12830 | /* Use high 16 bits of addend to record the _FP_BASE_ matched |
| 12831 | relocation. And get the base value when relocating. */ |
| 12832 | begin_rel->r_addend &= (0x1 << 16) - 1; |
| 12833 | begin_rel->r_addend |= dist << 16; |
| 12834 | |
| 12835 | nds32_fag_free_list (&fag_head); |
| 12836 | begin_rel = NULL; |
| 12837 | } |
| 12838 | |
| 12839 | if (begin_rel == NULL || ifc_inside) |
| 12840 | /* Skip if we are not in the region of fp-as-gp. */ |
| 12841 | continue; |
| 12842 | |
| 12843 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S2_RELA |
| 12844 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA17S2_RELA) |
| 12845 | { |
| 12846 | bfd_vma addr; |
| 12847 | uint32_t insn; |
| 12848 | |
| 12849 | /* A gp-relative access is found. Insert it to the fag-list. */ |
| 12850 | |
| 12851 | /* Rt is necessary an RT3, so it can be converted to lwi37.fp. */ |
| 12852 | insn = bfd_getb32 (contents + irel->r_offset); |
| 12853 | if (!N32_IS_RT3 (insn)) |
| 12854 | continue; |
| 12855 | |
| 12856 | addr = calculate_memory_address (abfd, irel, isymbuf, symtab_hdr); |
| 12857 | nds32_fag_insert (&fag_head, addr, irel); |
| 12858 | } |
| 12859 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA_FP7U2_RELA) |
| 12860 | { |
| 12861 | begin_rel = NULL; |
| 12862 | } |
| 12863 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_17IFC_PCREL_RELA |
| 12864 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
| 12865 | { |
| 12866 | /* Suppress fp as gp when encounter ifc. */ |
| 12867 | ifc_inside = TRUE; |
| 12868 | } |
| 12869 | } |
| 12870 | |
| 12871 | return TRUE; |
| 12872 | } |
| 12873 | |
| 12874 | /* Remove unused `la $fp, _FD_BASE_' instruction. */ |
| 12875 | |
| 12876 | static bfd_boolean |
| 12877 | nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec, |
| 12878 | Elf_Internal_Rela *internal_relocs, |
| 12879 | Elf_Internal_Rela *irelend) |
| 12880 | { |
| 12881 | Elf_Internal_Rela *irel; |
| 12882 | Elf_Internal_Shdr *symtab_hdr; |
| 12883 | bfd_byte *contents = NULL; |
| 12884 | nds32_elf_blank_t *relax_blank_list = NULL; |
| 12885 | bfd_boolean result = TRUE; |
| 12886 | bfd_boolean unused_region = FALSE; |
| 12887 | |
| 12888 | /* |
| 12889 | NOTE: Disable fp-as-gp if we encounter ifcall relocations. |
| 12890 | * R_NDS32_17IFC_PCREL_RELA |
| 12891 | * R_NDS32_10IFCU_PCREL_RELA |
| 12892 | |
| 12893 | CASE?????????????? |
| 12894 | */ |
| 12895 | |
| 12896 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 12897 | nds32_get_section_contents (abfd, sec, &contents, TRUE); |
| 12898 | |
| 12899 | for (irel = internal_relocs; irel < irelend; irel++) |
| 12900 | { |
| 12901 | /* To remove unused fp-base, we simply find the REGION_NOT_OMIT_FP |
| 12902 | we marked to in previous pass. |
| 12903 | DO NOT scan relocations again, since we've alreadly decided it |
| 12904 | and set the flag. */ |
| 12905 | const char *syname; |
| 12906 | int syndx; |
| 12907 | uint32_t insn; |
| 12908 | |
| 12909 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
| 12910 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) |
| 12911 | unused_region = TRUE; |
| 12912 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
| 12913 | && (irel->r_addend & R_NDS32_RELAX_REGION_NOT_OMIT_FP_FLAG)) |
| 12914 | unused_region = FALSE; |
| 12915 | |
| 12916 | /* We're not in the region. */ |
| 12917 | if (!unused_region) |
| 12918 | continue; |
| 12919 | |
| 12920 | /* _FP_BASE_ must be a GLOBAL symbol. */ |
| 12921 | syndx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 12922 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 12923 | continue; |
| 12924 | |
| 12925 | /* The symbol name must be _FP_BASE_. */ |
| 12926 | syname = elf_sym_hashes (abfd)[syndx]->root.root.string; |
| 12927 | if (strcmp (syname, FP_BASE_NAME) != 0) |
| 12928 | continue; |
| 12929 | |
| 12930 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA19S0_RELA) |
| 12931 | { |
| 12932 | /* addi.gp $fp, -256 */ |
| 12933 | insn = bfd_getb32 (contents + irel->r_offset); |
| 12934 | if (insn != INSN_ADDIGP_TO_FP) |
| 12935 | continue; |
| 12936 | } |
| 12937 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_SDA15S0_RELA) |
| 12938 | { |
| 12939 | /* addi $fp, $gp, -256 */ |
| 12940 | insn = bfd_getb32 (contents + irel->r_offset); |
| 12941 | if (insn != INSN_ADDI_GP_TO_FP) |
| 12942 | continue; |
| 12943 | } |
| 12944 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_20_RELA) |
| 12945 | { |
| 12946 | /* movi $fp, FP_BASE */ |
| 12947 | insn = bfd_getb32 (contents + irel->r_offset); |
| 12948 | if (insn != INSN_MOVI_TO_FP) |
| 12949 | continue; |
| 12950 | } |
| 12951 | else |
| 12952 | continue; |
| 12953 | |
| 12954 | /* We got here because a FP_BASE instruction is found. */ |
| 12955 | if (!insert_nds32_elf_blank_recalc_total |
| 12956 | (&relax_blank_list, irel->r_offset, 4)) |
| 12957 | goto error_return; |
| 12958 | } |
| 12959 | |
| 12960 | finish: |
| 12961 | if (relax_blank_list) |
| 12962 | { |
| 12963 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); |
| 12964 | relax_blank_list = NULL; |
| 12965 | } |
| 12966 | return result; |
| 12967 | |
| 12968 | error_return: |
| 12969 | result = FALSE; |
| 12970 | goto finish; |
| 12971 | } |
| 12972 | |
| 12973 | /* This is a version of bfd_generic_get_relocated_section_contents. |
| 12974 | We need this variety because relaxation will modify the dwarf |
| 12975 | infomation. When there is undefined symbol reference error mesage, |
| 12976 | linker need to dump line number where the symbol be used. However |
| 12977 | the address is be relaxed, it can not get the original dwarf contents. |
| 12978 | The variety only modify function call for reading in the section. */ |
| 12979 | |
| 12980 | static bfd_byte * |
| 12981 | nds32_elf_get_relocated_section_contents (bfd *abfd, |
| 12982 | struct bfd_link_info *link_info, |
| 12983 | struct bfd_link_order *link_order, |
| 12984 | bfd_byte *data, |
| 12985 | bfd_boolean relocatable, |
| 12986 | asymbol **symbols) |
| 12987 | { |
| 12988 | bfd *input_bfd = link_order->u.indirect.section->owner; |
| 12989 | asection *input_section = link_order->u.indirect.section; |
| 12990 | long reloc_size; |
| 12991 | arelent **reloc_vector; |
| 12992 | long reloc_count; |
| 12993 | |
| 12994 | reloc_size = bfd_get_reloc_upper_bound (input_bfd, input_section); |
| 12995 | if (reloc_size < 0) |
| 12996 | return NULL; |
| 12997 | |
| 12998 | /* Read in the section. */ |
| 12999 | if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE)) |
| 13000 | return NULL; |
| 13001 | |
| 13002 | if (reloc_size == 0) |
| 13003 | return data; |
| 13004 | |
| 13005 | reloc_vector = (arelent **) bfd_malloc (reloc_size); |
| 13006 | if (reloc_vector == NULL) |
| 13007 | return NULL; |
| 13008 | |
| 13009 | reloc_count = bfd_canonicalize_reloc (input_bfd, input_section, |
| 13010 | reloc_vector, symbols); |
| 13011 | if (reloc_count < 0) |
| 13012 | goto error_return; |
| 13013 | |
| 13014 | if (reloc_count > 0) |
| 13015 | { |
| 13016 | arelent **parent; |
| 13017 | for (parent = reloc_vector; *parent != NULL; parent++) |
| 13018 | { |
| 13019 | char *error_message = NULL; |
| 13020 | asymbol *symbol; |
| 13021 | bfd_reloc_status_type r; |
| 13022 | |
| 13023 | symbol = *(*parent)->sym_ptr_ptr; |
| 13024 | if (symbol->section && discarded_section (symbol->section)) |
| 13025 | { |
| 13026 | bfd_byte *p; |
| 13027 | static reloc_howto_type none_howto |
| 13028 | = HOWTO (0, 0, 0, 0, FALSE, 0, complain_overflow_dont, NULL, |
| 13029 | "unused", FALSE, 0, 0, FALSE); |
| 13030 | |
| 13031 | p = data + (*parent)->address * bfd_octets_per_byte (input_bfd); |
| 13032 | _bfd_clear_contents ((*parent)->howto, input_bfd, input_section, |
| 13033 | p); |
| 13034 | (*parent)->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 13035 | (*parent)->addend = 0; |
| 13036 | (*parent)->howto = &none_howto; |
| 13037 | r = bfd_reloc_ok; |
| 13038 | } |
| 13039 | else |
| 13040 | r = bfd_perform_relocation (input_bfd, *parent, data, |
| 13041 | input_section, |
| 13042 | relocatable ? abfd : NULL, |
| 13043 | &error_message); |
| 13044 | |
| 13045 | if (relocatable) |
| 13046 | { |
| 13047 | asection *os = input_section->output_section; |
| 13048 | |
| 13049 | /* A partial link, so keep the relocs. */ |
| 13050 | os->orelocation[os->reloc_count] = *parent; |
| 13051 | os->reloc_count++; |
| 13052 | } |
| 13053 | |
| 13054 | if (r != bfd_reloc_ok) |
| 13055 | { |
| 13056 | switch (r) |
| 13057 | { |
| 13058 | case bfd_reloc_undefined: |
| 13059 | (*link_info->callbacks->undefined_symbol) |
| 13060 | (link_info, bfd_asymbol_name (*(*parent)->sym_ptr_ptr), |
| 13061 | input_bfd, input_section, (*parent)->address, TRUE); |
| 13062 | break; |
| 13063 | case bfd_reloc_dangerous: |
| 13064 | BFD_ASSERT (error_message != NULL); |
| 13065 | (*link_info->callbacks->reloc_dangerous) |
| 13066 | (link_info, error_message, |
| 13067 | input_bfd, input_section, (*parent)->address); |
| 13068 | break; |
| 13069 | case bfd_reloc_overflow: |
| 13070 | (*link_info->callbacks->reloc_overflow) |
| 13071 | (link_info, NULL, |
| 13072 | bfd_asymbol_name (*(*parent)->sym_ptr_ptr), |
| 13073 | (*parent)->howto->name, (*parent)->addend, |
| 13074 | input_bfd, input_section, (*parent)->address); |
| 13075 | break; |
| 13076 | case bfd_reloc_outofrange: |
| 13077 | /* PR ld/13730: |
| 13078 | This error can result when processing some partially |
| 13079 | complete binaries. Do not abort, but issue an error |
| 13080 | message instead. */ |
| 13081 | link_info->callbacks->einfo |
| 13082 | (_("%X%P: %B(%A): relocation \"%R\" goes out of range\n"), |
| 13083 | abfd, input_section, * parent); |
| 13084 | goto error_return; |
| 13085 | |
| 13086 | default: |
| 13087 | abort (); |
| 13088 | break; |
| 13089 | } |
| 13090 | } |
| 13091 | } |
| 13092 | } |
| 13093 | |
| 13094 | free (reloc_vector); |
| 13095 | return data; |
| 13096 | |
| 13097 | error_return: |
| 13098 | free (reloc_vector); |
| 13099 | return NULL; |
| 13100 | } |
| 13101 | \f |
| 13102 | /* Link-time IFC relaxation. |
| 13103 | In this optimization, we chains jump instructions |
| 13104 | of the same destination with ifcall. */ |
| 13105 | |
| 13106 | |
| 13107 | /* List to save jal and j relocation. */ |
| 13108 | struct elf_nds32_ifc_symbol_entry |
| 13109 | { |
| 13110 | asection *sec; |
| 13111 | struct elf_link_hash_entry *h; |
| 13112 | struct elf_nds32_ifc_irel_list *irel_head; |
| 13113 | unsigned long insn; |
| 13114 | int times; |
| 13115 | int enable; /* Apply ifc. */ |
| 13116 | int ex9_enable; /* Apply ifc after ex9. */ |
| 13117 | struct elf_nds32_ifc_symbol_entry *next; |
| 13118 | }; |
| 13119 | |
| 13120 | struct elf_nds32_ifc_irel_list |
| 13121 | { |
| 13122 | Elf_Internal_Rela *irel; |
| 13123 | asection *sec; |
| 13124 | bfd_vma addr; |
| 13125 | /* If this is set, then it is the last instruction for |
| 13126 | ifc-chain, so it must be keep for the actual branching. */ |
| 13127 | int keep; |
| 13128 | struct elf_nds32_ifc_irel_list *next; |
| 13129 | }; |
| 13130 | |
| 13131 | static struct elf_nds32_ifc_symbol_entry *ifc_symbol_head = NULL; |
| 13132 | |
| 13133 | /* Insert symbol of jal and j for ifc. */ |
| 13134 | |
| 13135 | static void |
| 13136 | nds32_elf_ifc_insert_symbol (asection *sec, |
| 13137 | struct elf_link_hash_entry *h, |
| 13138 | Elf_Internal_Rela *irel, |
| 13139 | unsigned long insn) |
| 13140 | { |
| 13141 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; |
| 13142 | |
| 13143 | /* Check there is target of existing entry the same as the new one. */ |
| 13144 | while (ptr != NULL) |
| 13145 | { |
| 13146 | if (((h == NULL && ptr->sec == sec |
| 13147 | && ELF32_R_SYM (ptr->irel_head->irel->r_info) == ELF32_R_SYM (irel->r_info) |
| 13148 | && ptr->irel_head->irel->r_addend == irel->r_addend) |
| 13149 | || h != NULL) |
| 13150 | && ptr->h == h |
| 13151 | && ptr->insn == insn) |
| 13152 | { |
| 13153 | /* The same target exist, so insert into list. */ |
| 13154 | struct elf_nds32_ifc_irel_list *irel_list = ptr->irel_head; |
| 13155 | |
| 13156 | while (irel_list->next != NULL) |
| 13157 | irel_list = irel_list->next; |
| 13158 | irel_list->next = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); |
| 13159 | irel_list = irel_list->next; |
| 13160 | irel_list->irel = irel; |
| 13161 | irel_list->keep = 1; |
| 13162 | |
| 13163 | if (h == NULL) |
| 13164 | irel_list->sec = NULL; |
| 13165 | else |
| 13166 | irel_list->sec = sec; |
| 13167 | irel_list->next = NULL; |
| 13168 | return; |
| 13169 | } |
| 13170 | if (ptr->next == NULL) |
| 13171 | break; |
| 13172 | ptr = ptr->next; |
| 13173 | } |
| 13174 | |
| 13175 | /* There is no same target entry, so build a new one. */ |
| 13176 | if (ifc_symbol_head == NULL) |
| 13177 | { |
| 13178 | ifc_symbol_head = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); |
| 13179 | ptr = ifc_symbol_head; |
| 13180 | } |
| 13181 | else |
| 13182 | { |
| 13183 | ptr->next = bfd_malloc (sizeof (struct elf_nds32_ifc_symbol_entry)); |
| 13184 | ptr = ptr->next; |
| 13185 | } |
| 13186 | |
| 13187 | ptr->h = h; |
| 13188 | ptr->irel_head = bfd_malloc (sizeof (struct elf_nds32_ifc_irel_list)); |
| 13189 | ptr->irel_head->irel = irel; |
| 13190 | ptr->insn = insn; |
| 13191 | ptr->irel_head->keep = 1; |
| 13192 | |
| 13193 | if (h == NULL) |
| 13194 | { |
| 13195 | /* Local symbols. */ |
| 13196 | ptr->sec = sec; |
| 13197 | ptr->irel_head->sec = NULL; |
| 13198 | } |
| 13199 | else |
| 13200 | { |
| 13201 | /* Global symbol. */ |
| 13202 | ptr->sec = NULL; |
| 13203 | ptr->irel_head->sec = sec; |
| 13204 | } |
| 13205 | |
| 13206 | ptr->irel_head->next = NULL; |
| 13207 | ptr->times = 0; |
| 13208 | ptr->enable = 0; |
| 13209 | ptr->ex9_enable = 0; |
| 13210 | ptr->next = NULL; |
| 13211 | } |
| 13212 | |
| 13213 | /* Gather all jal and j instructions. */ |
| 13214 | |
| 13215 | static bfd_boolean |
| 13216 | nds32_elf_ifc_calc (struct bfd_link_info *info, |
| 13217 | bfd *abfd, asection *sec) |
| 13218 | { |
| 13219 | Elf_Internal_Rela *internal_relocs; |
| 13220 | Elf_Internal_Rela *irelend; |
| 13221 | Elf_Internal_Rela *irel; |
| 13222 | Elf_Internal_Shdr *symtab_hdr; |
| 13223 | bfd_byte *contents = NULL; |
| 13224 | uint32_t insn, insn_with_reg; |
| 13225 | unsigned long r_symndx; |
| 13226 | struct elf_link_hash_entry *h; |
| 13227 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); |
| 13228 | struct elf_nds32_link_hash_table *table; |
| 13229 | bfd_boolean ifc_loop_aware; |
| 13230 | |
| 13231 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
| 13232 | TRUE /* keep_memory */); |
| 13233 | irelend = internal_relocs + sec->reloc_count; |
| 13234 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 13235 | |
| 13236 | /* Check if the object enable ifc. */ |
| 13237 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, |
| 13238 | R_NDS32_RELAX_ENTRY); |
| 13239 | |
| 13240 | if (irel == NULL |
| 13241 | || irel >= irelend |
| 13242 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY |
| 13243 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY |
| 13244 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG))) |
| 13245 | return TRUE; |
| 13246 | |
| 13247 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
| 13248 | return FALSE; |
| 13249 | |
| 13250 | table = nds32_elf_hash_table (info); |
| 13251 | ifc_loop_aware = table->ifc_loop_aware; |
| 13252 | while (irel != NULL && irel < irelend) |
| 13253 | { |
| 13254 | /* Traverse all relocation and gather all of them to build the list. */ |
| 13255 | |
| 13256 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN) |
| 13257 | { |
| 13258 | if (ifc_loop_aware == 1 |
| 13259 | && (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0) |
| 13260 | { |
| 13261 | /* Check the region if loop or not. If it is true and |
| 13262 | ifc-loop-aware is true, ignore the region till region end. */ |
| 13263 | while (irel != NULL |
| 13264 | && irel < irelend |
| 13265 | && (ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_REGION_END |
| 13266 | || (irel->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG) != 0)) |
| 13267 | irel++; |
| 13268 | } |
| 13269 | } |
| 13270 | |
| 13271 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) |
| 13272 | { |
| 13273 | insn = bfd_getb32 (contents + irel->r_offset); |
| 13274 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); |
| 13275 | r_symndx = ELF32_R_SYM (irel->r_info); |
| 13276 | if (r_symndx < symtab_hdr->sh_info) |
| 13277 | { |
| 13278 | /* Local symbol. */ |
| 13279 | nds32_elf_ifc_insert_symbol (sec, NULL, irel, insn_with_reg); |
| 13280 | } |
| 13281 | else |
| 13282 | { |
| 13283 | /* External symbol. */ |
| 13284 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 13285 | nds32_elf_ifc_insert_symbol (sec, h, irel, insn_with_reg); |
| 13286 | } |
| 13287 | } |
| 13288 | irel++; |
| 13289 | } |
| 13290 | return TRUE; |
| 13291 | } |
| 13292 | |
| 13293 | /* Determine whether j and jal should be substituted. */ |
| 13294 | |
| 13295 | static void |
| 13296 | nds32_elf_ifc_filter (struct bfd_link_info *info) |
| 13297 | { |
| 13298 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; |
| 13299 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; |
| 13300 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; |
| 13301 | struct elf_nds32_link_hash_table *table; |
| 13302 | int target_optimize; |
| 13303 | bfd_vma address; |
| 13304 | |
| 13305 | table = nds32_elf_hash_table (info); |
| 13306 | target_optimize = table->target_optimize; |
| 13307 | while (ptr) |
| 13308 | { |
| 13309 | irel_ptr = ptr->irel_head; |
| 13310 | if (ptr->h == NULL) |
| 13311 | { |
| 13312 | /* Local symbol. */ |
| 13313 | irel_keeper = irel_ptr; |
| 13314 | while (irel_ptr && irel_ptr->next) |
| 13315 | { |
| 13316 | /* Check there is jump target can be used. */ |
| 13317 | if ((irel_ptr->next->irel->r_offset |
| 13318 | - irel_keeper->irel->r_offset) > 1022) |
| 13319 | irel_keeper = irel_ptr->next; |
| 13320 | else |
| 13321 | { |
| 13322 | ptr->enable = 1; |
| 13323 | irel_ptr->keep = 0; |
| 13324 | } |
| 13325 | irel_ptr = irel_ptr->next; |
| 13326 | } |
| 13327 | } |
| 13328 | else |
| 13329 | { |
| 13330 | /* Global symbol. */ |
| 13331 | /* We have to get the absolute address and decide |
| 13332 | whether to keep it or not. */ |
| 13333 | while (irel_ptr) |
| 13334 | { |
| 13335 | address = (irel_ptr->irel->r_offset |
| 13336 | + irel_ptr->sec->output_section->vma |
| 13337 | + irel_ptr->sec->output_offset); |
| 13338 | irel_ptr->addr = address; |
| 13339 | irel_ptr = irel_ptr->next; |
| 13340 | } |
| 13341 | |
| 13342 | irel_ptr = ptr->irel_head; |
| 13343 | while (irel_ptr) |
| 13344 | { |
| 13345 | /* Sort by address. */ |
| 13346 | struct elf_nds32_ifc_irel_list *irel_dest = irel_ptr; |
| 13347 | struct elf_nds32_ifc_irel_list *irel_temp = irel_ptr; |
| 13348 | struct elf_nds32_ifc_irel_list *irel_ptr_prev = NULL; |
| 13349 | struct elf_nds32_ifc_irel_list *irel_dest_prev = NULL; |
| 13350 | |
| 13351 | /* Get the smallest one. */ |
| 13352 | while (irel_temp->next) |
| 13353 | { |
| 13354 | if (irel_temp->next->addr < irel_dest->addr) |
| 13355 | { |
| 13356 | irel_dest_prev = irel_temp; |
| 13357 | irel_dest = irel_temp->next; |
| 13358 | } |
| 13359 | irel_temp = irel_temp->next; |
| 13360 | } |
| 13361 | |
| 13362 | if (irel_dest != irel_ptr) |
| 13363 | { |
| 13364 | if (irel_ptr_prev) |
| 13365 | irel_ptr_prev->next = irel_dest; |
| 13366 | if (irel_dest_prev) |
| 13367 | irel_dest_prev->next = irel_ptr; |
| 13368 | irel_temp = irel_ptr->next; |
| 13369 | irel_ptr->next = irel_dest->next; |
| 13370 | irel_dest->next = irel_temp; |
| 13371 | } |
| 13372 | irel_ptr_prev = irel_ptr; |
| 13373 | irel_ptr = irel_ptr->next; |
| 13374 | } |
| 13375 | |
| 13376 | irel_ptr = ptr->irel_head; |
| 13377 | irel_keeper = irel_ptr; |
| 13378 | while (irel_ptr && irel_ptr->next) |
| 13379 | { |
| 13380 | if ((irel_ptr->next->addr - irel_keeper->addr) > 1022) |
| 13381 | irel_keeper = irel_ptr->next; |
| 13382 | else |
| 13383 | { |
| 13384 | ptr->enable = 1; |
| 13385 | irel_ptr->keep = 0; |
| 13386 | } |
| 13387 | irel_ptr = irel_ptr->next; |
| 13388 | } |
| 13389 | } |
| 13390 | |
| 13391 | /* Ex9 enable. Reserve it for ex9. */ |
| 13392 | if ((target_optimize & NDS32_RELAX_EX9_ON) |
| 13393 | && ptr->irel_head != irel_keeper) |
| 13394 | ptr->enable = 0; |
| 13395 | ptr = ptr->next; |
| 13396 | } |
| 13397 | } |
| 13398 | |
| 13399 | /* Determine whether j and jal should be substituted after ex9 done. */ |
| 13400 | |
| 13401 | static void |
| 13402 | nds32_elf_ifc_filter_after_ex9 (void) |
| 13403 | { |
| 13404 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; |
| 13405 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; |
| 13406 | |
| 13407 | while (ptr) |
| 13408 | { |
| 13409 | if (ptr->enable == 0) |
| 13410 | { |
| 13411 | /* Check whether ifc is applied or not. */ |
| 13412 | irel_ptr = ptr->irel_head; |
| 13413 | ptr->ex9_enable = 1; |
| 13414 | while (irel_ptr) |
| 13415 | { |
| 13416 | if (ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_TRAN) |
| 13417 | { |
| 13418 | /* Ex9 already. */ |
| 13419 | ptr->ex9_enable = 0; |
| 13420 | break; |
| 13421 | } |
| 13422 | irel_ptr = irel_ptr->next; |
| 13423 | } |
| 13424 | } |
| 13425 | ptr = ptr->next; |
| 13426 | } |
| 13427 | } |
| 13428 | |
| 13429 | /* Wrapper to do ifc relaxation. */ |
| 13430 | |
| 13431 | bfd_boolean |
| 13432 | nds32_elf_ifc_finish (struct bfd_link_info *info) |
| 13433 | { |
| 13434 | int relax_status; |
| 13435 | struct elf_nds32_link_hash_table *table; |
| 13436 | |
| 13437 | table = nds32_elf_hash_table (info); |
| 13438 | relax_status = table->relax_status; |
| 13439 | |
| 13440 | if (!(relax_status & NDS32_RELAX_JUMP_IFC_DONE)) |
| 13441 | nds32_elf_ifc_filter (info); |
| 13442 | else |
| 13443 | nds32_elf_ifc_filter_after_ex9 (); |
| 13444 | |
| 13445 | if (!nds32_elf_ifc_replace (info)) |
| 13446 | return FALSE; |
| 13447 | |
| 13448 | if (table) |
| 13449 | table->relax_status |= NDS32_RELAX_JUMP_IFC_DONE; |
| 13450 | return TRUE; |
| 13451 | } |
| 13452 | |
| 13453 | /* Traverse the result of ifc filter and replace it with ifcall9. */ |
| 13454 | |
| 13455 | static bfd_boolean |
| 13456 | nds32_elf_ifc_replace (struct bfd_link_info *info) |
| 13457 | { |
| 13458 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; |
| 13459 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; |
| 13460 | nds32_elf_blank_t *relax_blank_list = NULL; |
| 13461 | bfd_byte *contents = NULL; |
| 13462 | Elf_Internal_Rela *internal_relocs; |
| 13463 | Elf_Internal_Rela *irel; |
| 13464 | Elf_Internal_Rela *irelend; |
| 13465 | unsigned short insn16 = INSN_IFCALL9; |
| 13466 | struct elf_nds32_link_hash_table *table; |
| 13467 | int relax_status; |
| 13468 | |
| 13469 | table = nds32_elf_hash_table (info); |
| 13470 | relax_status = table->relax_status; |
| 13471 | |
| 13472 | while (ptr) |
| 13473 | { |
| 13474 | /* Traverse the ifc gather list, and replace the |
| 13475 | filter entries by ifcall9. */ |
| 13476 | if ((!(relax_status & NDS32_RELAX_JUMP_IFC_DONE) && ptr->enable == 1) |
| 13477 | || ((relax_status & NDS32_RELAX_JUMP_IFC_DONE) |
| 13478 | && ptr->ex9_enable == 1)) |
| 13479 | { |
| 13480 | irel_ptr = ptr->irel_head; |
| 13481 | if (ptr->h == NULL) |
| 13482 | { |
| 13483 | /* Local symbol. */ |
| 13484 | internal_relocs = _bfd_elf_link_read_relocs |
| 13485 | (ptr->sec->owner, ptr->sec, NULL, NULL, TRUE /* keep_memory */); |
| 13486 | irelend = internal_relocs + ptr->sec->reloc_count; |
| 13487 | |
| 13488 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, |
| 13489 | &contents, TRUE)) |
| 13490 | return FALSE; |
| 13491 | |
| 13492 | while (irel_ptr) |
| 13493 | { |
| 13494 | if (irel_ptr->keep == 0 && irel_ptr->next) |
| 13495 | { |
| 13496 | /* The one can be replaced. We have to check whether |
| 13497 | there is any alignment point in the region. */ |
| 13498 | irel = irel_ptr->irel; |
| 13499 | while (((irel_ptr->next->keep == 0 |
| 13500 | && irel < irel_ptr->next->irel) |
| 13501 | || (irel_ptr->next->keep == 1 && irel < irelend)) |
| 13502 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 13503 | && (irel->r_addend & 0x1f) == 2)) |
| 13504 | irel++; |
| 13505 | if (irel >= irelend |
| 13506 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 13507 | && (irel->r_addend & 0x1f) == 2 |
| 13508 | && ((irel->r_offset - get_nds32_elf_blank_total |
| 13509 | (&relax_blank_list, irel->r_offset, 1)) |
| 13510 | & 0x02) == 0)) |
| 13511 | { |
| 13512 | /* Replace by ifcall9. */ |
| 13513 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); |
| 13514 | if (!insert_nds32_elf_blank_recalc_total |
| 13515 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) |
| 13516 | return FALSE; |
| 13517 | irel_ptr->irel->r_info = |
| 13518 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
| 13519 | R_NDS32_10IFCU_PCREL_RELA); |
| 13520 | } |
| 13521 | } |
| 13522 | irel_ptr = irel_ptr->next; |
| 13523 | } |
| 13524 | |
| 13525 | /* Delete the redundant code. */ |
| 13526 | if (relax_blank_list) |
| 13527 | { |
| 13528 | nds32_elf_relax_delete_blanks (ptr->sec->owner, ptr->sec, |
| 13529 | relax_blank_list); |
| 13530 | relax_blank_list = NULL; |
| 13531 | } |
| 13532 | } |
| 13533 | else |
| 13534 | { |
| 13535 | /* Global symbol. */ |
| 13536 | while (irel_ptr) |
| 13537 | { |
| 13538 | if (irel_ptr->keep == 0 && irel_ptr->next) |
| 13539 | { |
| 13540 | /* The one can be replaced, and we have to check |
| 13541 | whether there is any alignment point in the region. */ |
| 13542 | internal_relocs = _bfd_elf_link_read_relocs |
| 13543 | (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL, |
| 13544 | TRUE /* keep_memory */); |
| 13545 | irelend = internal_relocs + irel_ptr->sec->reloc_count; |
| 13546 | if (!nds32_get_section_contents (irel_ptr->sec->owner, |
| 13547 | irel_ptr->sec, &contents, |
| 13548 | TRUE)) |
| 13549 | return FALSE; |
| 13550 | |
| 13551 | irel = irel_ptr->irel; |
| 13552 | while (((irel_ptr->sec == irel_ptr->next->sec |
| 13553 | && irel_ptr->next->keep == 0 |
| 13554 | && irel < irel_ptr->next->irel) |
| 13555 | || ((irel_ptr->sec != irel_ptr->next->sec |
| 13556 | || irel_ptr->next->keep == 1) |
| 13557 | && irel < irelend)) |
| 13558 | && !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 13559 | && (irel->r_addend & 0x1f) == 2)) |
| 13560 | irel++; |
| 13561 | if (irel >= irelend |
| 13562 | || !(ELF32_R_TYPE (irel->r_info) == R_NDS32_LABEL |
| 13563 | && (irel->r_addend & 0x1f) == 2 |
| 13564 | && ((irel->r_offset |
| 13565 | - get_nds32_elf_blank_total (&relax_blank_list, |
| 13566 | irel->r_offset, 1)) & 0x02) == 0)) |
| 13567 | { |
| 13568 | /* Replace by ifcall9. */ |
| 13569 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); |
| 13570 | if (!insert_nds32_elf_blank_recalc_total |
| 13571 | (&relax_blank_list, irel_ptr->irel->r_offset + 2, 2)) |
| 13572 | return FALSE; |
| 13573 | |
| 13574 | /* Delete the redundant code, and clear the relocation. */ |
| 13575 | nds32_elf_relax_delete_blanks (irel_ptr->sec->owner, |
| 13576 | irel_ptr->sec, |
| 13577 | relax_blank_list); |
| 13578 | irel_ptr->irel->r_info = |
| 13579 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
| 13580 | R_NDS32_10IFCU_PCREL_RELA); |
| 13581 | relax_blank_list = NULL; |
| 13582 | } |
| 13583 | } |
| 13584 | |
| 13585 | irel_ptr = irel_ptr->next; |
| 13586 | } |
| 13587 | } |
| 13588 | } |
| 13589 | ptr = ptr->next; |
| 13590 | } |
| 13591 | |
| 13592 | return TRUE; |
| 13593 | } |
| 13594 | |
| 13595 | /* Relocate ifcall. */ |
| 13596 | |
| 13597 | static bfd_boolean |
| 13598 | nds32_elf_ifc_reloc (void) |
| 13599 | { |
| 13600 | struct elf_nds32_ifc_symbol_entry *ptr = ifc_symbol_head; |
| 13601 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; |
| 13602 | struct elf_nds32_ifc_irel_list *irel_keeper = NULL; |
| 13603 | bfd_vma relocation, address; |
| 13604 | unsigned short insn16; |
| 13605 | bfd_byte *contents = NULL; |
| 13606 | static bfd_boolean done = FALSE; |
| 13607 | |
| 13608 | if (done) |
| 13609 | return TRUE; |
| 13610 | |
| 13611 | done = TRUE; |
| 13612 | |
| 13613 | while (ptr) |
| 13614 | { |
| 13615 | /* Check the entry is enable ifcall. */ |
| 13616 | if (ptr->enable == 1 || ptr->ex9_enable == 1) |
| 13617 | { |
| 13618 | /* Get the reserve jump. */ |
| 13619 | irel_ptr = ptr->irel_head; |
| 13620 | while (irel_ptr) |
| 13621 | { |
| 13622 | if (irel_ptr->keep == 1) |
| 13623 | { |
| 13624 | irel_keeper = irel_ptr; |
| 13625 | break; |
| 13626 | } |
| 13627 | irel_ptr = irel_ptr->next; |
| 13628 | } |
| 13629 | |
| 13630 | irel_ptr = ptr->irel_head; |
| 13631 | if (ptr->h == NULL) |
| 13632 | { |
| 13633 | /* Local symbol. */ |
| 13634 | if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, |
| 13635 | &contents, TRUE)) |
| 13636 | return FALSE; |
| 13637 | |
| 13638 | while (irel_ptr) |
| 13639 | { |
| 13640 | if (irel_ptr->keep == 0 |
| 13641 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
| 13642 | { |
| 13643 | relocation = irel_keeper->irel->r_offset; |
| 13644 | relocation = relocation - irel_ptr->irel->r_offset; |
| 13645 | while (irel_keeper && relocation > 1022) |
| 13646 | { |
| 13647 | irel_keeper = irel_keeper->next; |
| 13648 | if (irel_keeper && irel_keeper->keep == 1) |
| 13649 | { |
| 13650 | relocation = irel_keeper->irel->r_offset; |
| 13651 | relocation = relocation - irel_ptr->irel->r_offset; |
| 13652 | } |
| 13653 | } |
| 13654 | if (relocation > 1022) |
| 13655 | { |
| 13656 | /* Double check. */ |
| 13657 | irel_keeper = ptr->irel_head; |
| 13658 | while (irel_keeper) |
| 13659 | { |
| 13660 | if (irel_keeper->keep == 1) |
| 13661 | { |
| 13662 | relocation = irel_keeper->irel->r_offset; |
| 13663 | relocation = relocation - irel_ptr->irel->r_offset; |
| 13664 | } |
| 13665 | if (relocation <= 1022) |
| 13666 | break; |
| 13667 | irel_keeper = irel_keeper->next; |
| 13668 | } |
| 13669 | if (!irel_keeper) |
| 13670 | return FALSE; |
| 13671 | } |
| 13672 | irel_ptr->irel->r_info = |
| 13673 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
| 13674 | R_NDS32_NONE); |
| 13675 | insn16 = INSN_IFCALL9 | (relocation >> 1); |
| 13676 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); |
| 13677 | } |
| 13678 | irel_ptr = irel_ptr->next; |
| 13679 | } |
| 13680 | } |
| 13681 | else |
| 13682 | { |
| 13683 | /* Global symbol. */ |
| 13684 | while (irel_ptr) |
| 13685 | { |
| 13686 | if (irel_ptr->keep == 0 |
| 13687 | && ELF32_R_TYPE (irel_ptr->irel->r_info) == R_NDS32_10IFCU_PCREL_RELA) |
| 13688 | { |
| 13689 | /* Get the distance between ifcall and jump. */ |
| 13690 | relocation = (irel_keeper->irel->r_offset |
| 13691 | + irel_keeper->sec->output_section->vma |
| 13692 | + irel_keeper->sec->output_offset); |
| 13693 | address = (irel_ptr->irel->r_offset |
| 13694 | + irel_ptr->sec->output_section->vma |
| 13695 | + irel_ptr->sec->output_offset); |
| 13696 | relocation = relocation - address; |
| 13697 | |
| 13698 | /* The distance is over ragne, find callee again. */ |
| 13699 | while (irel_keeper && relocation > 1022) |
| 13700 | { |
| 13701 | irel_keeper = irel_keeper->next; |
| 13702 | if (irel_keeper && irel_keeper->keep ==1) |
| 13703 | { |
| 13704 | relocation = (irel_keeper->irel->r_offset |
| 13705 | + irel_keeper->sec->output_section->vma |
| 13706 | + irel_keeper->sec->output_offset); |
| 13707 | relocation = relocation - address; |
| 13708 | } |
| 13709 | } |
| 13710 | |
| 13711 | if (relocation > 1022) |
| 13712 | { |
| 13713 | /* Double check. */ |
| 13714 | irel_keeper = ptr->irel_head; |
| 13715 | while (irel_keeper) |
| 13716 | { |
| 13717 | if (irel_keeper->keep == 1) |
| 13718 | { |
| 13719 | |
| 13720 | relocation = (irel_keeper->irel->r_offset |
| 13721 | + irel_keeper->sec->output_section->vma |
| 13722 | + irel_keeper->sec->output_offset); |
| 13723 | relocation = relocation - address; |
| 13724 | } |
| 13725 | if (relocation <= 1022) |
| 13726 | break; |
| 13727 | irel_keeper = irel_keeper->next; |
| 13728 | } |
| 13729 | if (!irel_keeper) |
| 13730 | return FALSE; |
| 13731 | } |
| 13732 | if (!nds32_get_section_contents |
| 13733 | (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE)) |
| 13734 | return FALSE; |
| 13735 | insn16 = INSN_IFCALL9 | (relocation >> 1); |
| 13736 | bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); |
| 13737 | irel_ptr->irel->r_info = |
| 13738 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), |
| 13739 | R_NDS32_NONE); |
| 13740 | } |
| 13741 | irel_ptr =irel_ptr->next; |
| 13742 | } |
| 13743 | } |
| 13744 | } |
| 13745 | ptr = ptr->next; |
| 13746 | } |
| 13747 | |
| 13748 | return TRUE; |
| 13749 | } |
| 13750 | |
| 13751 | /* End of IFC relaxation. */ |
| 13752 | \f |
| 13753 | /* EX9 Instruction Table Relaxation. */ |
| 13754 | |
| 13755 | /* Global hash list. */ |
| 13756 | struct elf_link_hash_entry_list |
| 13757 | { |
| 13758 | struct elf_link_hash_entry *h; |
| 13759 | struct elf_link_hash_entry_list *next; |
| 13760 | }; |
| 13761 | |
| 13762 | /* Save different destination but same insn. */ |
| 13763 | struct elf_link_hash_entry_mul_list |
| 13764 | { |
| 13765 | /* Global symbol times. */ |
| 13766 | int times; |
| 13767 | /* Save relocation for each global symbol but useful?? */ |
| 13768 | Elf_Internal_Rela *irel; |
| 13769 | /* For sethi, two sethi may have the same high-part but different low-parts. */ |
| 13770 | Elf_Internal_Rela rel_backup; |
| 13771 | struct elf_link_hash_entry_list *h_list; |
| 13772 | struct elf_link_hash_entry_mul_list *next; |
| 13773 | }; |
| 13774 | |
| 13775 | /* Instruction hash table. */ |
| 13776 | struct elf_nds32_code_hash_entry |
| 13777 | { |
| 13778 | struct bfd_hash_entry root; |
| 13779 | int times; |
| 13780 | /* For insn that can use relocation or constant ex: sethi. */ |
| 13781 | int const_insn; |
| 13782 | asection *sec; |
| 13783 | struct elf_link_hash_entry_mul_list *m_list; |
| 13784 | /* Using r_addend. */ |
| 13785 | Elf_Internal_Rela *irel; |
| 13786 | /* Using r_info. */ |
| 13787 | Elf_Internal_Rela rel_backup; |
| 13788 | }; |
| 13789 | |
| 13790 | /* Instruction count list. */ |
| 13791 | struct elf_nds32_insn_times_entry |
| 13792 | { |
| 13793 | const char *string; |
| 13794 | int times; |
| 13795 | int order; |
| 13796 | asection *sec; |
| 13797 | struct elf_link_hash_entry_mul_list *m_list; |
| 13798 | Elf_Internal_Rela *irel; |
| 13799 | Elf_Internal_Rela rel_backup; |
| 13800 | struct elf_nds32_insn_times_entry *next; |
| 13801 | }; |
| 13802 | |
| 13803 | /* J and JAL symbol list. */ |
| 13804 | struct elf_nds32_symbol_entry |
| 13805 | { |
| 13806 | char *string; |
| 13807 | unsigned long insn; |
| 13808 | struct elf_nds32_symbol_entry *next; |
| 13809 | }; |
| 13810 | |
| 13811 | /* Relocation list. */ |
| 13812 | struct elf_nds32_irel_entry |
| 13813 | { |
| 13814 | Elf_Internal_Rela *irel; |
| 13815 | struct elf_nds32_irel_entry *next; |
| 13816 | }; |
| 13817 | |
| 13818 | /* ex9.it insn need to be fixed. */ |
| 13819 | struct elf_nds32_ex9_refix |
| 13820 | { |
| 13821 | Elf_Internal_Rela *irel; |
| 13822 | asection *sec; |
| 13823 | struct elf_link_hash_entry *h; |
| 13824 | int order; |
| 13825 | struct elf_nds32_ex9_refix *next; |
| 13826 | }; |
| 13827 | |
| 13828 | static struct bfd_hash_table ex9_code_table; |
| 13829 | static struct elf_nds32_insn_times_entry *ex9_insn_head = NULL; |
| 13830 | static struct elf_nds32_ex9_refix *ex9_refix_head = NULL; |
| 13831 | |
| 13832 | /* EX9 hash function. */ |
| 13833 | |
| 13834 | static struct bfd_hash_entry * |
| 13835 | nds32_elf_code_hash_newfunc (struct bfd_hash_entry *entry, |
| 13836 | struct bfd_hash_table *table, |
| 13837 | const char *string) |
| 13838 | { |
| 13839 | struct elf_nds32_code_hash_entry *ret; |
| 13840 | |
| 13841 | /* Allocate the structure if it has not already been allocated by a |
| 13842 | subclass. */ |
| 13843 | if (entry == NULL) |
| 13844 | { |
| 13845 | entry = (struct bfd_hash_entry *) |
| 13846 | bfd_hash_allocate (table, sizeof (*ret)); |
| 13847 | if (entry == NULL) |
| 13848 | return entry; |
| 13849 | } |
| 13850 | |
| 13851 | /* Call the allocation method of the superclass. */ |
| 13852 | entry = bfd_hash_newfunc (entry, table, string); |
| 13853 | if (entry == NULL) |
| 13854 | return entry; |
| 13855 | |
| 13856 | ret = (struct elf_nds32_code_hash_entry*) entry; |
| 13857 | ret->times = 0; |
| 13858 | ret->const_insn = 0; |
| 13859 | ret->m_list = NULL; |
| 13860 | ret->sec = NULL; |
| 13861 | ret->irel = NULL; |
| 13862 | return &ret->root; |
| 13863 | } |
| 13864 | |
| 13865 | /* Insert ex9 entry |
| 13866 | this insert must be stable sorted by times. */ |
| 13867 | |
| 13868 | static void |
| 13869 | nds32_elf_ex9_insert_entry (struct elf_nds32_insn_times_entry *ptr) |
| 13870 | { |
| 13871 | struct elf_nds32_insn_times_entry *temp; |
| 13872 | struct elf_nds32_insn_times_entry *temp2; |
| 13873 | |
| 13874 | if (ex9_insn_head == NULL) |
| 13875 | { |
| 13876 | ex9_insn_head = ptr; |
| 13877 | ptr->next = NULL; |
| 13878 | } |
| 13879 | else |
| 13880 | { |
| 13881 | temp = ex9_insn_head; |
| 13882 | temp2 = ex9_insn_head; |
| 13883 | while (temp->next && |
| 13884 | (temp->next->times >= ptr->times |
| 13885 | || temp->times == -1)) |
| 13886 | { |
| 13887 | if (temp->times == -1) |
| 13888 | temp2 = temp; |
| 13889 | temp = temp->next; |
| 13890 | } |
| 13891 | if (ptr->times > temp->times && temp->times != -1) |
| 13892 | { |
| 13893 | ptr->next = temp; |
| 13894 | if (temp2->times == -1) |
| 13895 | temp2->next = ptr; |
| 13896 | else |
| 13897 | ex9_insn_head = ptr; |
| 13898 | } |
| 13899 | else if (temp->next == NULL) |
| 13900 | { |
| 13901 | temp->next = ptr; |
| 13902 | ptr->next = NULL; |
| 13903 | } |
| 13904 | else |
| 13905 | { |
| 13906 | ptr->next = temp->next; |
| 13907 | temp->next = ptr; |
| 13908 | } |
| 13909 | } |
| 13910 | } |
| 13911 | |
| 13912 | /* Examine each insn times in hash table. |
| 13913 | Handle multi-link hash entry. |
| 13914 | |
| 13915 | TODO: This function doesn't assign so much info since it is fake. */ |
| 13916 | |
| 13917 | static int |
| 13918 | nds32_elf_examine_insn_times (struct elf_nds32_code_hash_entry *h) |
| 13919 | { |
| 13920 | struct elf_nds32_insn_times_entry *ptr; |
| 13921 | int times; |
| 13922 | |
| 13923 | if (h->m_list == NULL) |
| 13924 | { |
| 13925 | /* Local symbol insn or insn without relocation. */ |
| 13926 | if (h->times < 3) |
| 13927 | return TRUE; |
| 13928 | |
| 13929 | ptr = (struct elf_nds32_insn_times_entry *) |
| 13930 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 13931 | ptr->times = h->times; |
| 13932 | ptr->string = h->root.string; |
| 13933 | ptr->m_list = NULL; |
| 13934 | ptr->sec = h->sec; |
| 13935 | ptr->irel = h->irel; |
| 13936 | ptr->rel_backup = h->rel_backup; |
| 13937 | nds32_elf_ex9_insert_entry (ptr); |
| 13938 | } |
| 13939 | else |
| 13940 | { |
| 13941 | /* Global symbol insn. */ |
| 13942 | /* Only sethi insn has multiple m_list. */ |
| 13943 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; |
| 13944 | |
| 13945 | times = 0; |
| 13946 | while (m_list) |
| 13947 | { |
| 13948 | times += m_list->times; |
| 13949 | m_list = m_list->next; |
| 13950 | } |
| 13951 | if (times >= 3) |
| 13952 | { |
| 13953 | m_list = h->m_list; |
| 13954 | ptr = (struct elf_nds32_insn_times_entry *) |
| 13955 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 13956 | ptr->times = times; /* Use the total times. */ |
| 13957 | ptr->string = h->root.string; |
| 13958 | ptr->m_list = m_list; |
| 13959 | ptr->sec = h->sec; |
| 13960 | ptr->irel = m_list->irel; |
| 13961 | ptr->rel_backup = m_list->rel_backup; |
| 13962 | nds32_elf_ex9_insert_entry (ptr); |
| 13963 | } |
| 13964 | if (h->const_insn == 1) |
| 13965 | { |
| 13966 | /* sethi with constant value. */ |
| 13967 | if (h->times < 3) |
| 13968 | return TRUE; |
| 13969 | |
| 13970 | ptr = (struct elf_nds32_insn_times_entry *) |
| 13971 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 13972 | ptr->times = h->times; |
| 13973 | ptr->string = h->root.string; |
| 13974 | ptr->m_list = NULL; |
| 13975 | ptr->sec = NULL; |
| 13976 | ptr->irel = NULL; |
| 13977 | ptr->rel_backup = h->rel_backup; |
| 13978 | nds32_elf_ex9_insert_entry (ptr); |
| 13979 | } |
| 13980 | } |
| 13981 | return TRUE; |
| 13982 | } |
| 13983 | |
| 13984 | /* Count each insn times in hash table. |
| 13985 | Handle multi-link hash entry. */ |
| 13986 | |
| 13987 | static int |
| 13988 | nds32_elf_count_insn_times (struct elf_nds32_code_hash_entry *h) |
| 13989 | { |
| 13990 | int reservation, times; |
| 13991 | unsigned long relocation, min_relocation; |
| 13992 | struct elf_nds32_insn_times_entry *ptr; |
| 13993 | |
| 13994 | if (h->m_list == NULL) |
| 13995 | { |
| 13996 | /* Local symbol insn or insn without relocation. */ |
| 13997 | if (h->times < 3) |
| 13998 | return TRUE; |
| 13999 | ptr = (struct elf_nds32_insn_times_entry *) |
| 14000 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 14001 | ptr->times = h->times; |
| 14002 | ptr->string = h->root.string; |
| 14003 | ptr->m_list = NULL; |
| 14004 | ptr->sec = h->sec; |
| 14005 | ptr->irel = h->irel; |
| 14006 | ptr->rel_backup = h->rel_backup; |
| 14007 | nds32_elf_ex9_insert_entry (ptr); |
| 14008 | } |
| 14009 | else |
| 14010 | { |
| 14011 | /* Global symbol insn. */ |
| 14012 | /* Only sethi insn has multiple m_list. */ |
| 14013 | struct elf_link_hash_entry_mul_list *m_list = h->m_list; |
| 14014 | |
| 14015 | if (ELF32_R_TYPE (m_list->rel_backup.r_info) == R_NDS32_HI20_RELA |
| 14016 | && m_list->next != NULL) |
| 14017 | { |
| 14018 | /* Sethi insn has different symbol or addend but has same hi20. */ |
| 14019 | times = 0; |
| 14020 | reservation = 1; |
| 14021 | relocation = 0; |
| 14022 | min_relocation = 0xffffffff; |
| 14023 | while (m_list) |
| 14024 | { |
| 14025 | /* Get the minimum sethi address |
| 14026 | and calculate how many entry the sethi-list have to use. */ |
| 14027 | if ((m_list->h_list->h->root.type == bfd_link_hash_defined |
| 14028 | || m_list->h_list->h->root.type == bfd_link_hash_defweak) |
| 14029 | && (m_list->h_list->h->root.u.def.section != NULL |
| 14030 | && m_list->h_list->h->root.u.def.section->output_section != NULL)) |
| 14031 | { |
| 14032 | relocation = (m_list->h_list->h->root.u.def.value + |
| 14033 | m_list->h_list->h->root.u.def.section->output_section->vma + |
| 14034 | m_list->h_list->h->root.u.def.section->output_offset); |
| 14035 | relocation += m_list->irel->r_addend; |
| 14036 | } |
| 14037 | else |
| 14038 | relocation = 0; |
| 14039 | if (relocation < min_relocation) |
| 14040 | min_relocation = relocation; |
| 14041 | times += m_list->times; |
| 14042 | m_list = m_list->next; |
| 14043 | } |
| 14044 | if (min_relocation < ex9_relax_size) |
| 14045 | reservation = (min_relocation >> 12) + 1; |
| 14046 | else |
| 14047 | reservation = (min_relocation >> 12) |
| 14048 | - ((min_relocation - ex9_relax_size) >> 12) + 1; |
| 14049 | if (reservation < (times / 3)) |
| 14050 | { |
| 14051 | /* Efficient enough to use ex9. */ |
| 14052 | int i; |
| 14053 | |
| 14054 | for (i = reservation ; i > 0; i--) |
| 14055 | { |
| 14056 | /* Allocate number of reservation ex9 entry. */ |
| 14057 | ptr = (struct elf_nds32_insn_times_entry *) |
| 14058 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 14059 | ptr->times = h->m_list->times / reservation; |
| 14060 | ptr->string = h->root.string; |
| 14061 | ptr->m_list = h->m_list; |
| 14062 | ptr->sec = h->sec; |
| 14063 | ptr->irel = h->m_list->irel; |
| 14064 | ptr->rel_backup = h->m_list->rel_backup; |
| 14065 | nds32_elf_ex9_insert_entry (ptr); |
| 14066 | } |
| 14067 | } |
| 14068 | } |
| 14069 | else |
| 14070 | { |
| 14071 | /* Normal global symbol that means no different address symbol |
| 14072 | using same ex9 entry. */ |
| 14073 | if (m_list->times >= 3) |
| 14074 | { |
| 14075 | ptr = (struct elf_nds32_insn_times_entry *) |
| 14076 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 14077 | ptr->times = m_list->times; |
| 14078 | ptr->string = h->root.string; |
| 14079 | ptr->m_list = h->m_list; |
| 14080 | ptr->sec = h->sec; |
| 14081 | ptr->irel = h->m_list->irel; |
| 14082 | ptr->rel_backup = h->m_list->rel_backup; |
| 14083 | nds32_elf_ex9_insert_entry (ptr); |
| 14084 | } |
| 14085 | } |
| 14086 | |
| 14087 | if (h->const_insn == 1) |
| 14088 | { |
| 14089 | /* sethi with constant value. */ |
| 14090 | if (h->times < 3) |
| 14091 | return TRUE; |
| 14092 | |
| 14093 | ptr = (struct elf_nds32_insn_times_entry *) |
| 14094 | bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 14095 | ptr->times = h->times; |
| 14096 | ptr->string = h->root.string; |
| 14097 | ptr->m_list = NULL; |
| 14098 | ptr->sec = NULL; |
| 14099 | ptr->irel = NULL; |
| 14100 | ptr->rel_backup = h->rel_backup; |
| 14101 | nds32_elf_ex9_insert_entry (ptr); |
| 14102 | } |
| 14103 | } |
| 14104 | |
| 14105 | return TRUE; |
| 14106 | } |
| 14107 | |
| 14108 | /* Hash table traverse function. */ |
| 14109 | |
| 14110 | static void |
| 14111 | nds32_elf_code_hash_traverse (int (*func) (struct elf_nds32_code_hash_entry*)) |
| 14112 | { |
| 14113 | unsigned int i; |
| 14114 | |
| 14115 | ex9_code_table.frozen = 1; |
| 14116 | for (i = 0; i < ex9_code_table.size; i++) |
| 14117 | { |
| 14118 | struct bfd_hash_entry *p; |
| 14119 | |
| 14120 | for (p = ex9_code_table.table[i]; p != NULL; p = p->next) |
| 14121 | if (!func ((struct elf_nds32_code_hash_entry *) p)) |
| 14122 | goto out; |
| 14123 | } |
| 14124 | out: |
| 14125 | ex9_code_table.frozen = 0; |
| 14126 | } |
| 14127 | |
| 14128 | |
| 14129 | /* Give order number to insn list. */ |
| 14130 | |
| 14131 | static void |
| 14132 | nds32_elf_order_insn_times (struct bfd_link_info *info) |
| 14133 | { |
| 14134 | struct elf_nds32_insn_times_entry *ex9_insn; |
| 14135 | struct elf_nds32_insn_times_entry *temp = NULL; |
| 14136 | struct elf_nds32_link_hash_table *table; |
| 14137 | int ex9_limit; |
| 14138 | int number = 0; |
| 14139 | |
| 14140 | if (ex9_insn_head == NULL) |
| 14141 | return; |
| 14142 | |
| 14143 | /* The max number of entries is 512. */ |
| 14144 | ex9_insn = ex9_insn_head; |
| 14145 | table = nds32_elf_hash_table (info); |
| 14146 | ex9_limit = table->ex9_limit; |
| 14147 | |
| 14148 | ex9_insn = ex9_insn_head; |
| 14149 | |
| 14150 | while (ex9_insn != NULL && number < ex9_limit) |
| 14151 | { |
| 14152 | ex9_insn->order = number; |
| 14153 | number++; |
| 14154 | temp = ex9_insn; |
| 14155 | ex9_insn = ex9_insn->next; |
| 14156 | } |
| 14157 | |
| 14158 | if (ex9_insn && temp) |
| 14159 | temp->next = NULL; |
| 14160 | |
| 14161 | while (ex9_insn != NULL) |
| 14162 | { |
| 14163 | /* Free useless entry. */ |
| 14164 | temp = ex9_insn; |
| 14165 | ex9_insn = ex9_insn->next; |
| 14166 | free (temp); |
| 14167 | } |
| 14168 | } |
| 14169 | |
| 14170 | /* Build .ex9.itable section. */ |
| 14171 | |
| 14172 | static void |
| 14173 | nds32_elf_ex9_build_itable (struct bfd_link_info *link_info) |
| 14174 | { |
| 14175 | asection *table_sec; |
| 14176 | struct elf_nds32_insn_times_entry *ptr; |
| 14177 | bfd *it_abfd; |
| 14178 | int number = 0; |
| 14179 | bfd_byte *contents = NULL; |
| 14180 | |
| 14181 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; |
| 14182 | it_abfd = it_abfd->link.next) |
| 14183 | { |
| 14184 | /* Find the section .ex9.itable, and put all entries into it. */ |
| 14185 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); |
| 14186 | if (table_sec != NULL) |
| 14187 | { |
| 14188 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) |
| 14189 | return; |
| 14190 | |
| 14191 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) |
| 14192 | number++; |
| 14193 | |
| 14194 | table_sec->size = number * 4; |
| 14195 | |
| 14196 | if (number == 0) |
| 14197 | return; |
| 14198 | |
| 14199 | elf_elfheader (link_info->output_bfd)->e_flags |= E_NDS32_HAS_EX9_INST; |
| 14200 | number = 0; |
| 14201 | for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) |
| 14202 | { |
| 14203 | long val; |
| 14204 | |
| 14205 | val = strtol (ptr->string, NULL, 16); |
| 14206 | bfd_putb32 ((bfd_vma) val, (char *) contents + (number * 4)); |
| 14207 | number++; |
| 14208 | } |
| 14209 | break; |
| 14210 | } |
| 14211 | } |
| 14212 | } |
| 14213 | |
| 14214 | /* Get insn with regs according to relocation type. */ |
| 14215 | |
| 14216 | static void |
| 14217 | nds32_elf_get_insn_with_reg (Elf_Internal_Rela *irel, |
| 14218 | uint32_t insn, uint32_t *insn_with_reg) |
| 14219 | { |
| 14220 | reloc_howto_type *howto = NULL; |
| 14221 | |
| 14222 | if (irel == NULL |
| 14223 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) |
| 14224 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) |
| 14225 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) |
| 14226 | { |
| 14227 | *insn_with_reg = insn; |
| 14228 | return; |
| 14229 | } |
| 14230 | |
| 14231 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); |
| 14232 | *insn_with_reg = insn & (0xffffffff ^ howto->dst_mask); |
| 14233 | } |
| 14234 | |
| 14235 | /* Mask number of address bits according to relocation. */ |
| 14236 | |
| 14237 | static unsigned long |
| 14238 | nds32_elf_irel_mask (Elf_Internal_Rela *irel) |
| 14239 | { |
| 14240 | reloc_howto_type *howto = NULL; |
| 14241 | |
| 14242 | if (irel == NULL |
| 14243 | || (ELF32_R_TYPE (irel->r_info) >= (int) ARRAY_SIZE (nds32_elf_howto_table) |
| 14244 | && (ELF32_R_TYPE (irel->r_info) - R_NDS32_RELAX_ENTRY) |
| 14245 | >= (int) ARRAY_SIZE (nds32_elf_relax_howto_table))) |
| 14246 | return 0; |
| 14247 | |
| 14248 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); |
| 14249 | return howto->dst_mask; |
| 14250 | } |
| 14251 | |
| 14252 | static void |
| 14253 | nds32_elf_insert_irel_entry (struct elf_nds32_irel_entry **irel_list, |
| 14254 | struct elf_nds32_irel_entry *irel_ptr) |
| 14255 | { |
| 14256 | if (*irel_list == NULL) |
| 14257 | { |
| 14258 | *irel_list = irel_ptr; |
| 14259 | irel_ptr->next = NULL; |
| 14260 | } |
| 14261 | else |
| 14262 | { |
| 14263 | irel_ptr->next = *irel_list; |
| 14264 | *irel_list = irel_ptr; |
| 14265 | } |
| 14266 | } |
| 14267 | |
| 14268 | static void |
| 14269 | nds32_elf_ex9_insert_fix (asection * sec, Elf_Internal_Rela * irel, |
| 14270 | struct elf_link_hash_entry *h, int order) |
| 14271 | { |
| 14272 | struct elf_nds32_ex9_refix *ptr; |
| 14273 | |
| 14274 | ptr = bfd_malloc (sizeof (struct elf_nds32_ex9_refix)); |
| 14275 | ptr->sec = sec; |
| 14276 | ptr->irel = irel; |
| 14277 | ptr->h = h; |
| 14278 | ptr->order = order; |
| 14279 | ptr->next = NULL; |
| 14280 | |
| 14281 | if (ex9_refix_head == NULL) |
| 14282 | ex9_refix_head = ptr; |
| 14283 | else |
| 14284 | { |
| 14285 | struct elf_nds32_ex9_refix *temp = ex9_refix_head; |
| 14286 | |
| 14287 | while (temp->next != NULL) |
| 14288 | temp = temp->next; |
| 14289 | temp->next = ptr; |
| 14290 | } |
| 14291 | } |
| 14292 | |
| 14293 | enum |
| 14294 | { |
| 14295 | DATA_EXIST = 1, |
| 14296 | CLEAN_PRE = 1 << 1, |
| 14297 | PUSH_PRE = 1 << 2 |
| 14298 | }; |
| 14299 | |
| 14300 | /* Check relocation type if supporting for ex9. */ |
| 14301 | |
| 14302 | static int |
| 14303 | nds32_elf_ex9_relocation_check (struct bfd_link_info *info, |
| 14304 | Elf_Internal_Rela **irel, |
| 14305 | Elf_Internal_Rela *irelend, |
| 14306 | nds32_elf_blank_t *relax_blank_list, |
| 14307 | asection *sec,bfd_vma *off, |
| 14308 | bfd_byte *contents) |
| 14309 | { |
| 14310 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ |
| 14311 | bfd_boolean nested_ex9, nested_loop; |
| 14312 | bfd_boolean ex9_loop_aware; |
| 14313 | /* We use the highest 1 byte of result to record |
| 14314 | how many bytes location counter has to move. */ |
| 14315 | int result = 0; |
| 14316 | Elf_Internal_Rela *irel_save = NULL; |
| 14317 | struct elf_nds32_link_hash_table *table; |
| 14318 | |
| 14319 | table = nds32_elf_hash_table (info); |
| 14320 | ex9_loop_aware = table->ex9_loop_aware; |
| 14321 | |
| 14322 | while ((*irel) != NULL && (*irel) < irelend && *off == (*irel)->r_offset) |
| 14323 | { |
| 14324 | switch (ELF32_R_TYPE ((*irel)->r_info)) |
| 14325 | { |
| 14326 | case R_NDS32_RELAX_REGION_BEGIN: |
| 14327 | /* Ignore code block. */ |
| 14328 | nested_ex9 = FALSE; |
| 14329 | nested_loop = FALSE; |
| 14330 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) |
| 14331 | || (ex9_loop_aware |
| 14332 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG))) |
| 14333 | { |
| 14334 | /* Check the region if loop or not. If it is true and |
| 14335 | ex9-loop-aware is true, ignore the region till region end. */ |
| 14336 | /* To save the status for in .no_relax ex9 region and |
| 14337 | loop region to conform the block can do ex9 relaxation. */ |
| 14338 | nested_ex9 = ((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG); |
| 14339 | nested_loop = (ex9_loop_aware |
| 14340 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)); |
| 14341 | while ((*irel) && (*irel) < irelend && (nested_ex9 || nested_loop)) |
| 14342 | { |
| 14343 | (*irel)++; |
| 14344 | if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_BEGIN) |
| 14345 | { |
| 14346 | /* There may be nested region. */ |
| 14347 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) |
| 14348 | nested_ex9 = TRUE; |
| 14349 | else if (ex9_loop_aware |
| 14350 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) |
| 14351 | nested_loop = TRUE; |
| 14352 | } |
| 14353 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_RELAX_REGION_END) |
| 14354 | { |
| 14355 | /* The end of region. */ |
| 14356 | if (((*irel)->r_addend & R_NDS32_RELAX_REGION_NO_EX9_FLAG) != 0) |
| 14357 | nested_ex9 = FALSE; |
| 14358 | else if (ex9_loop_aware |
| 14359 | && ((*irel)->r_addend & R_NDS32_RELAX_REGION_INNERMOST_LOOP_FLAG)) |
| 14360 | nested_loop = FALSE; |
| 14361 | } |
| 14362 | else if (ELF32_R_TYPE ((*irel)->r_info) == R_NDS32_LABEL |
| 14363 | && ((*irel)->r_addend & 0x1f) == 2) |
| 14364 | { |
| 14365 | /* Alignment exist in the region. */ |
| 14366 | result |= CLEAN_PRE; |
| 14367 | if (((*irel)->r_offset - |
| 14368 | get_nds32_elf_blank_total (&relax_blank_list, |
| 14369 | (*irel)->r_offset, 0)) & 0x02) |
| 14370 | result |= PUSH_PRE; |
| 14371 | } |
| 14372 | } |
| 14373 | if ((*irel) >= irelend) |
| 14374 | *off = sec->size; |
| 14375 | else |
| 14376 | *off = (*irel)->r_offset; |
| 14377 | |
| 14378 | /* The final instruction in the region, regard this one as data to ignore it. */ |
| 14379 | result |= DATA_EXIST; |
| 14380 | return result; |
| 14381 | } |
| 14382 | break; |
| 14383 | |
| 14384 | case R_NDS32_LABEL: |
| 14385 | if (((*irel)->r_addend & 0x1f) == 2) |
| 14386 | { |
| 14387 | /* Check this point is align and decide to do ex9 or not. */ |
| 14388 | result |= CLEAN_PRE; |
| 14389 | if (((*irel)->r_offset - |
| 14390 | get_nds32_elf_blank_total (&relax_blank_list, |
| 14391 | (*irel)->r_offset, 0)) & 0x02) |
| 14392 | result |= PUSH_PRE; |
| 14393 | } |
| 14394 | break; |
| 14395 | case R_NDS32_32_RELA: |
| 14396 | /* Data. */ |
| 14397 | result |= (4 << 24); |
| 14398 | result |= DATA_EXIST; |
| 14399 | break; |
| 14400 | case R_NDS32_16_RELA: |
| 14401 | /* Data. */ |
| 14402 | result |= (2 << 24); |
| 14403 | result |= DATA_EXIST; |
| 14404 | break; |
| 14405 | case R_NDS32_DATA: |
| 14406 | /* Data. */ |
| 14407 | /* The least code alignment is 2. If the data is only one byte, |
| 14408 | we have to shift one more byte. */ |
| 14409 | if ((*irel)->r_addend == 1) |
| 14410 | result |= ((*irel)->r_addend << 25) ; |
| 14411 | else |
| 14412 | result |= ((*irel)->r_addend << 24) ; |
| 14413 | |
| 14414 | result |= DATA_EXIST; |
| 14415 | break; |
| 14416 | |
| 14417 | case R_NDS32_25_PCREL_RELA: |
| 14418 | case R_NDS32_SDA16S3_RELA: |
| 14419 | case R_NDS32_SDA15S3_RELA: |
| 14420 | case R_NDS32_SDA15S3: |
| 14421 | case R_NDS32_SDA17S2_RELA: |
| 14422 | case R_NDS32_SDA15S2_RELA: |
| 14423 | case R_NDS32_SDA12S2_SP_RELA: |
| 14424 | case R_NDS32_SDA12S2_DP_RELA: |
| 14425 | case R_NDS32_SDA15S2: |
| 14426 | case R_NDS32_SDA18S1_RELA: |
| 14427 | case R_NDS32_SDA15S1_RELA: |
| 14428 | case R_NDS32_SDA15S1: |
| 14429 | case R_NDS32_SDA19S0_RELA: |
| 14430 | case R_NDS32_SDA15S0_RELA: |
| 14431 | case R_NDS32_SDA15S0: |
| 14432 | case R_NDS32_HI20_RELA: |
| 14433 | case R_NDS32_LO12S0_ORI_RELA: |
| 14434 | case R_NDS32_LO12S0_RELA: |
| 14435 | case R_NDS32_LO12S1_RELA: |
| 14436 | case R_NDS32_LO12S2_RELA: |
| 14437 | /* These relocation is supported ex9 relaxation currently. */ |
| 14438 | /* We have to save the relocation for using later, since we have |
| 14439 | to check there is any alignment in the same address. */ |
| 14440 | irel_save = *irel; |
| 14441 | break; |
| 14442 | default: |
| 14443 | /* Not support relocations. */ |
| 14444 | if (ELF32_R_TYPE ((*irel)->r_info) < ARRAY_SIZE (nds32_elf_howto_table) |
| 14445 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_NONE |
| 14446 | && ELF32_R_TYPE ((*irel)->r_info) != R_NDS32_INSN16) |
| 14447 | { |
| 14448 | /* Note: To optimize aggressively, it maybe can ignore R_NDS32_INSN16 here. |
| 14449 | But we have to consider if there is any side-effect. */ |
| 14450 | if (!(result & DATA_EXIST)) |
| 14451 | { |
| 14452 | /* We have to confirm there is no data relocation in the |
| 14453 | same address. In general case, this won't happen. */ |
| 14454 | /* We have to do ex9 conservative, for those relocation not |
| 14455 | considerd we ignore instruction. */ |
| 14456 | result |= DATA_EXIST; |
| 14457 | if (*(contents + *off) & 0x80) |
| 14458 | result |= (2 << 24); |
| 14459 | else |
| 14460 | result |= (4 << 24); |
| 14461 | break; |
| 14462 | } |
| 14463 | } |
| 14464 | } |
| 14465 | if ((*irel) < irelend |
| 14466 | && ((*irel) + 1) < irelend |
| 14467 | && (*irel)->r_offset == ((*irel) + 1)->r_offset) |
| 14468 | /* There are relocations pointing to the same address, we have to |
| 14469 | check all of them. */ |
| 14470 | (*irel)++; |
| 14471 | else |
| 14472 | { |
| 14473 | if (irel_save) |
| 14474 | *irel = irel_save; |
| 14475 | return result; |
| 14476 | } |
| 14477 | } |
| 14478 | return result; |
| 14479 | } |
| 14480 | |
| 14481 | /* Replace with ex9 instruction. */ |
| 14482 | |
| 14483 | static bfd_boolean |
| 14484 | nds32_elf_ex9_push_insn (uint16_t insn16, bfd_byte *contents, bfd_vma pre_off, |
| 14485 | nds32_elf_blank_t **relax_blank_list, |
| 14486 | struct elf_nds32_irel_entry *pre_irel_ptr, |
| 14487 | struct elf_nds32_irel_entry **irel_list) |
| 14488 | { |
| 14489 | if (insn16 != 0) |
| 14490 | { |
| 14491 | /* Implement the ex9 relaxation. */ |
| 14492 | bfd_putb16 (insn16, contents + pre_off); |
| 14493 | if (!insert_nds32_elf_blank_recalc_total (relax_blank_list, |
| 14494 | pre_off + 2, 2)) |
| 14495 | return FALSE; |
| 14496 | if (pre_irel_ptr != NULL) |
| 14497 | nds32_elf_insert_irel_entry (irel_list, pre_irel_ptr); |
| 14498 | } |
| 14499 | return TRUE; |
| 14500 | } |
| 14501 | |
| 14502 | /* Replace input file instruction which is in ex9 itable. */ |
| 14503 | |
| 14504 | static bfd_boolean |
| 14505 | nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asection *sec) |
| 14506 | { |
| 14507 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; |
| 14508 | bfd_byte *contents = NULL; |
| 14509 | bfd_vma off; |
| 14510 | uint16_t insn16, insn_ex9; |
| 14511 | /* `pre_*' are used to track previous instruction that can use ex9.it. */ |
| 14512 | bfd_vma pre_off = -1; |
| 14513 | uint16_t pre_insn16 = 0; |
| 14514 | struct elf_nds32_irel_entry *pre_irel_ptr = NULL; |
| 14515 | Elf_Internal_Rela *internal_relocs; |
| 14516 | Elf_Internal_Rela *irel; |
| 14517 | Elf_Internal_Rela *irelend; |
| 14518 | Elf_Internal_Shdr *symtab_hdr; |
| 14519 | Elf_Internal_Sym *isym = NULL; |
| 14520 | nds32_elf_blank_t *relax_blank_list = NULL; |
| 14521 | uint32_t insn = 0; |
| 14522 | uint32_t insn_with_reg = 0; |
| 14523 | uint32_t it_insn; |
| 14524 | uint32_t it_insn_with_reg; |
| 14525 | unsigned long r_symndx; |
| 14526 | asection *isec; |
| 14527 | struct elf_nds32_irel_entry *irel_list = NULL; |
| 14528 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd); |
| 14529 | int data_flag, do_replace, save_irel; |
| 14530 | struct elf_link_hash_entry_list *h_list; |
| 14531 | |
| 14532 | |
| 14533 | /* Load section instructions, relocations, and symbol table. */ |
| 14534 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) |
| 14535 | || !nds32_get_local_syms (abfd, sec, &isym)) |
| 14536 | return FALSE; |
| 14537 | internal_relocs = |
| 14538 | _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, TRUE /* keep_memory */); |
| 14539 | irelend = internal_relocs + sec->reloc_count; |
| 14540 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 14541 | |
| 14542 | off = 0; |
| 14543 | |
| 14544 | /* Check if the object enable ex9. */ |
| 14545 | irel = find_relocs_at_address (internal_relocs, internal_relocs, |
| 14546 | irelend, R_NDS32_RELAX_ENTRY); |
| 14547 | |
| 14548 | /* Check this section trigger ex9 relaxation. */ |
| 14549 | if (irel == NULL |
| 14550 | || irel >= irelend |
| 14551 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY |
| 14552 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY |
| 14553 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) |
| 14554 | return TRUE; |
| 14555 | |
| 14556 | irel = internal_relocs; |
| 14557 | |
| 14558 | /* Check alignment and fetch proper relocation. */ |
| 14559 | while (off < sec->size) |
| 14560 | { |
| 14561 | struct elf_link_hash_entry *h = NULL; |
| 14562 | struct elf_nds32_irel_entry *irel_ptr = NULL; |
| 14563 | |
| 14564 | /* Syn the instruction and the relocation. */ |
| 14565 | while (irel != NULL && irel < irelend && irel->r_offset < off) |
| 14566 | irel++; |
| 14567 | |
| 14568 | data_flag = nds32_elf_ex9_relocation_check (info, &irel, irelend, |
| 14569 | relax_blank_list, sec, |
| 14570 | &off, contents); |
| 14571 | if (data_flag & PUSH_PRE) |
| 14572 | if (!nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, |
| 14573 | &relax_blank_list, pre_irel_ptr, |
| 14574 | &irel_list)) |
| 14575 | return FALSE; |
| 14576 | |
| 14577 | if (data_flag & CLEAN_PRE) |
| 14578 | { |
| 14579 | pre_off = 0; |
| 14580 | pre_insn16 = 0; |
| 14581 | pre_irel_ptr = NULL; |
| 14582 | } |
| 14583 | if (data_flag & DATA_EXIST) |
| 14584 | { |
| 14585 | /* We save the move offset in the highest byte. */ |
| 14586 | off += (data_flag >> 24); |
| 14587 | continue; |
| 14588 | } |
| 14589 | |
| 14590 | if (*(contents + off) & 0x80) |
| 14591 | { |
| 14592 | /* 2-byte instruction. */ |
| 14593 | off += 2; |
| 14594 | continue; |
| 14595 | } |
| 14596 | |
| 14597 | /* Load the instruction and its opcode with register for comparing. */ |
| 14598 | ex9_insn = ex9_insn_head; |
| 14599 | insn = bfd_getb32 (contents + off); |
| 14600 | insn_with_reg = 0; |
| 14601 | while (ex9_insn) |
| 14602 | { |
| 14603 | it_insn = strtol (ex9_insn->string, NULL, 16); |
| 14604 | it_insn_with_reg = 0; |
| 14605 | do_replace = 0; |
| 14606 | save_irel = 0; |
| 14607 | |
| 14608 | if (irel != NULL && irel < irelend && irel->r_offset == off) |
| 14609 | { |
| 14610 | /* Insn with relocation. */ |
| 14611 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); |
| 14612 | |
| 14613 | if (ex9_insn->irel != NULL) |
| 14614 | nds32_elf_get_insn_with_reg (ex9_insn->irel, it_insn, |
| 14615 | &it_insn_with_reg); |
| 14616 | |
| 14617 | if (ex9_insn->irel != NULL |
| 14618 | && (ELF32_R_TYPE (irel->r_info) == |
| 14619 | ELF32_R_TYPE (ex9_insn->irel->r_info)) |
| 14620 | && (insn_with_reg == it_insn_with_reg)) |
| 14621 | { |
| 14622 | /* Insn relocation and format is the same as table entry. */ |
| 14623 | |
| 14624 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA |
| 14625 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA |
| 14626 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA |
| 14627 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA |
| 14628 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA |
| 14629 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 |
| 14630 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) |
| 14631 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA |
| 14632 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) |
| 14633 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA |
| 14634 | && ELF32_R_TYPE (irel->r_info) <= |
| 14635 | R_NDS32_SDA12S2_SP_RELA) |
| 14636 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA |
| 14637 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) |
| 14638 | { |
| 14639 | r_symndx = ELF32_R_SYM (irel->r_info); |
| 14640 | if (r_symndx < symtab_hdr->sh_info) |
| 14641 | { |
| 14642 | /* Local symbol. */ |
| 14643 | int shndx = isym[r_symndx].st_shndx; |
| 14644 | |
| 14645 | isec = elf_elfsections (abfd)[shndx]->bfd_section; |
| 14646 | if (ex9_insn->sec == isec |
| 14647 | && ex9_insn->irel->r_addend == irel->r_addend |
| 14648 | && ex9_insn->irel->r_info == irel->r_info) |
| 14649 | { |
| 14650 | do_replace = 1; |
| 14651 | save_irel = 1; |
| 14652 | } |
| 14653 | } |
| 14654 | else |
| 14655 | { |
| 14656 | /* External symbol. */ |
| 14657 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 14658 | if (ex9_insn->m_list) |
| 14659 | { |
| 14660 | h_list = ex9_insn->m_list->h_list; |
| 14661 | while (h_list) |
| 14662 | { |
| 14663 | if (h == h_list->h |
| 14664 | && (ex9_insn->m_list->irel->r_addend == |
| 14665 | irel->r_addend)) |
| 14666 | { |
| 14667 | do_replace = 1; |
| 14668 | save_irel = 1; |
| 14669 | break; |
| 14670 | } |
| 14671 | h_list = h_list->next; |
| 14672 | } |
| 14673 | } |
| 14674 | } |
| 14675 | } |
| 14676 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA) |
| 14677 | { |
| 14678 | r_symndx = ELF32_R_SYM (irel->r_info); |
| 14679 | if (r_symndx < symtab_hdr->sh_info) |
| 14680 | { |
| 14681 | /* Local symbols. Compare its base symbol and offset. */ |
| 14682 | int shndx = isym[r_symndx].st_shndx; |
| 14683 | |
| 14684 | isec = elf_elfsections (abfd)[shndx]->bfd_section; |
| 14685 | if (ex9_insn->sec == isec |
| 14686 | && ex9_insn->irel->r_addend == irel->r_addend |
| 14687 | && ex9_insn->irel->r_info == irel->r_info) |
| 14688 | { |
| 14689 | do_replace = 1; |
| 14690 | save_irel = 1; |
| 14691 | } |
| 14692 | } |
| 14693 | else |
| 14694 | { |
| 14695 | /* External symbol. */ |
| 14696 | struct elf_link_hash_entry_mul_list *m_list; |
| 14697 | |
| 14698 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 14699 | m_list = ex9_insn->m_list; |
| 14700 | |
| 14701 | while (m_list) |
| 14702 | { |
| 14703 | h_list = m_list->h_list; |
| 14704 | |
| 14705 | while (h_list) |
| 14706 | { |
| 14707 | if (h == h_list->h |
| 14708 | && (m_list->irel->r_addend |
| 14709 | == irel->r_addend)) |
| 14710 | { |
| 14711 | do_replace = 1; |
| 14712 | save_irel = 1; |
| 14713 | if (ex9_insn->next |
| 14714 | && ex9_insn->m_list |
| 14715 | && ex9_insn->m_list == ex9_insn->next->m_list) |
| 14716 | { |
| 14717 | /* sethi multiple entry must be fixed */ |
| 14718 | nds32_elf_ex9_insert_fix (sec, irel, |
| 14719 | h, ex9_insn->order); |
| 14720 | } |
| 14721 | break; |
| 14722 | } |
| 14723 | h_list = h_list->next; |
| 14724 | } |
| 14725 | m_list = m_list->next; |
| 14726 | } |
| 14727 | } |
| 14728 | } |
| 14729 | } |
| 14730 | |
| 14731 | /* Import table: Check the symbol hash table and the |
| 14732 | jump target. Only R_NDS32_25_PCREL_RELA now. */ |
| 14733 | else if (ex9_insn->times == -1 |
| 14734 | && ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA) |
| 14735 | { |
| 14736 | nds32_elf_get_insn_with_reg (irel, it_insn, &it_insn_with_reg); |
| 14737 | if (insn_with_reg == it_insn_with_reg) |
| 14738 | { |
| 14739 | char code[10]; |
| 14740 | bfd_vma relocation; |
| 14741 | |
| 14742 | r_symndx = ELF32_R_SYM (irel->r_info); |
| 14743 | if (r_symndx >= symtab_hdr->sh_info) |
| 14744 | { |
| 14745 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 14746 | if ((h->root.type == bfd_link_hash_defined |
| 14747 | || h->root.type == bfd_link_hash_defweak) |
| 14748 | && h->root.u.def.section != NULL |
| 14749 | && h->root.u.def.section->output_section != NULL |
| 14750 | && h->root.u.def.section->gc_mark == 1 |
| 14751 | && bfd_is_abs_section (h->root.u.def.section) |
| 14752 | && h->root.u.def.value > sec->size) |
| 14753 | { |
| 14754 | relocation = h->root.u.def.value + |
| 14755 | h->root.u.def.section->output_section->vma + |
| 14756 | h->root.u.def.section->output_offset; |
| 14757 | relocation += irel->r_addend; |
| 14758 | insn = insn_with_reg |
| 14759 | | ((relocation >> 1) & 0xffffff); |
| 14760 | snprintf (code, sizeof (code), "%08x", insn); |
| 14761 | if (strcmp (code, ex9_insn->string) == 0) |
| 14762 | { |
| 14763 | do_replace = 1; |
| 14764 | save_irel = 1; |
| 14765 | } |
| 14766 | } |
| 14767 | } |
| 14768 | } |
| 14769 | } |
| 14770 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
| 14771 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
| 14772 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) |
| 14773 | { |
| 14774 | /* These relocations do not have to relocate contens, so it can |
| 14775 | be regard as instruction without relocation. */ |
| 14776 | if (insn == it_insn && ex9_insn->irel == NULL) |
| 14777 | do_replace = 1; |
| 14778 | } |
| 14779 | } |
| 14780 | else |
| 14781 | { |
| 14782 | /* Instruction without relocation, we only |
| 14783 | have to compare their byte code. */ |
| 14784 | if (insn == it_insn && ex9_insn->irel == NULL) |
| 14785 | do_replace = 1; |
| 14786 | } |
| 14787 | |
| 14788 | /* Insntruction match so replacing the code here. */ |
| 14789 | if (do_replace == 1) |
| 14790 | { |
| 14791 | /* There are two formats of ex9 instruction. */ |
| 14792 | if (ex9_insn->order < 32) |
| 14793 | insn_ex9 = INSN_EX9_IT_2; |
| 14794 | else |
| 14795 | insn_ex9 = INSN_EX9_IT_1; |
| 14796 | insn16 = insn_ex9 | ex9_insn->order; |
| 14797 | |
| 14798 | /* Insert ex9 instruction. */ |
| 14799 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, |
| 14800 | &relax_blank_list, pre_irel_ptr, |
| 14801 | &irel_list); |
| 14802 | pre_off = off; |
| 14803 | pre_insn16 = insn16; |
| 14804 | |
| 14805 | if (save_irel) |
| 14806 | { |
| 14807 | /* For instuction with relocation do relax. */ |
| 14808 | irel_ptr = (struct elf_nds32_irel_entry *) |
| 14809 | bfd_malloc (sizeof (struct elf_nds32_irel_entry)); |
| 14810 | irel_ptr->irel = irel; |
| 14811 | irel_ptr->next = NULL; |
| 14812 | pre_irel_ptr = irel_ptr; |
| 14813 | } |
| 14814 | else |
| 14815 | pre_irel_ptr = NULL; |
| 14816 | break; |
| 14817 | } |
| 14818 | ex9_insn = ex9_insn->next; |
| 14819 | } |
| 14820 | off += 4; |
| 14821 | } |
| 14822 | |
| 14823 | /* Insert ex9 instruction. */ |
| 14824 | nds32_elf_ex9_push_insn (pre_insn16, contents, pre_off, |
| 14825 | &relax_blank_list, pre_irel_ptr, |
| 14826 | &irel_list); |
| 14827 | |
| 14828 | /* Delete the redundant code. */ |
| 14829 | if (relax_blank_list) |
| 14830 | { |
| 14831 | nds32_elf_relax_delete_blanks (abfd, sec, relax_blank_list); |
| 14832 | relax_blank_list = NULL; |
| 14833 | } |
| 14834 | |
| 14835 | /* Clear the relocation that is replaced by ex9. */ |
| 14836 | while (irel_list) |
| 14837 | { |
| 14838 | struct elf_nds32_irel_entry *irel_ptr; |
| 14839 | |
| 14840 | irel_ptr = irel_list; |
| 14841 | irel_list = irel_ptr->next; |
| 14842 | irel_ptr->irel->r_info = |
| 14843 | ELF32_R_INFO (ELF32_R_SYM (irel_ptr->irel->r_info), R_NDS32_TRAN); |
| 14844 | free (irel_ptr); |
| 14845 | } |
| 14846 | return TRUE; |
| 14847 | } |
| 14848 | |
| 14849 | /* Initialize ex9 hash table. */ |
| 14850 | |
| 14851 | int |
| 14852 | nds32_elf_ex9_init (void) |
| 14853 | { |
| 14854 | if (!bfd_hash_table_init_n (&ex9_code_table, nds32_elf_code_hash_newfunc, |
| 14855 | sizeof (struct elf_nds32_code_hash_entry), |
| 14856 | 1023)) |
| 14857 | { |
| 14858 | (*_bfd_error_handler) (_("Linker: cannot init ex9 hash table error \n")); |
| 14859 | return FALSE; |
| 14860 | } |
| 14861 | return TRUE; |
| 14862 | } |
| 14863 | |
| 14864 | /* Predict how many bytes will be relaxed with ex9 and ifc. */ |
| 14865 | |
| 14866 | static void |
| 14867 | nds32_elf_ex9_total_relax (struct bfd_link_info *info) |
| 14868 | { |
| 14869 | struct elf_nds32_insn_times_entry *ex9_insn; |
| 14870 | struct elf_nds32_insn_times_entry *temp; |
| 14871 | int target_optimize; |
| 14872 | struct elf_nds32_link_hash_table *table; |
| 14873 | |
| 14874 | if (ex9_insn_head == NULL) |
| 14875 | return; |
| 14876 | |
| 14877 | table = nds32_elf_hash_table (info); |
| 14878 | target_optimize = table->target_optimize; |
| 14879 | ex9_insn = ex9_insn_head; |
| 14880 | while (ex9_insn) |
| 14881 | { |
| 14882 | ex9_relax_size = ex9_insn->times * 2 + ex9_relax_size; |
| 14883 | temp = ex9_insn; |
| 14884 | ex9_insn = ex9_insn->next; |
| 14885 | free (temp); |
| 14886 | } |
| 14887 | ex9_insn_head = NULL; |
| 14888 | |
| 14889 | if ((target_optimize & NDS32_RELAX_JUMP_IFC_ON)) |
| 14890 | { |
| 14891 | /* Examine ifc reduce size. */ |
| 14892 | struct elf_nds32_ifc_symbol_entry *ifc_ent = ifc_symbol_head; |
| 14893 | struct elf_nds32_ifc_irel_list *irel_ptr = NULL; |
| 14894 | int size = 0; |
| 14895 | |
| 14896 | while (ifc_ent) |
| 14897 | { |
| 14898 | if (ifc_ent->enable == 0) |
| 14899 | { |
| 14900 | /* Not ifc yet. */ |
| 14901 | irel_ptr = ifc_ent->irel_head; |
| 14902 | while (irel_ptr) |
| 14903 | { |
| 14904 | size += 2; |
| 14905 | irel_ptr = irel_ptr->next; |
| 14906 | } |
| 14907 | } |
| 14908 | size -= 2; |
| 14909 | ifc_ent = ifc_ent->next; |
| 14910 | } |
| 14911 | ex9_relax_size += size; |
| 14912 | } |
| 14913 | } |
| 14914 | |
| 14915 | /* Finish ex9 table. */ |
| 14916 | |
| 14917 | void |
| 14918 | nds32_elf_ex9_finish (struct bfd_link_info *link_info) |
| 14919 | { |
| 14920 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); |
| 14921 | nds32_elf_order_insn_times (link_info); |
| 14922 | nds32_elf_ex9_total_relax (link_info); |
| 14923 | /* Traverse the hash table and count its times. */ |
| 14924 | nds32_elf_code_hash_traverse (nds32_elf_count_insn_times); |
| 14925 | nds32_elf_order_insn_times (link_info); |
| 14926 | nds32_elf_ex9_build_itable (link_info); |
| 14927 | } |
| 14928 | |
| 14929 | /* Relocate the entries in ex9 table. */ |
| 14930 | |
| 14931 | static bfd_vma |
| 14932 | nds32_elf_ex9_reloc_insn (struct elf_nds32_insn_times_entry *ptr, |
| 14933 | struct bfd_link_info *link_info) |
| 14934 | { |
| 14935 | Elf_Internal_Sym *isym = NULL; |
| 14936 | bfd_vma relocation = -1; |
| 14937 | struct elf_link_hash_entry *h; |
| 14938 | |
| 14939 | if (ptr->m_list != NULL) |
| 14940 | { |
| 14941 | /* Global symbol. */ |
| 14942 | h = ptr->m_list->h_list->h; |
| 14943 | if ((h->root.type == bfd_link_hash_defined |
| 14944 | || h->root.type == bfd_link_hash_defweak) |
| 14945 | && h->root.u.def.section != NULL |
| 14946 | && h->root.u.def.section->output_section != NULL) |
| 14947 | { |
| 14948 | |
| 14949 | relocation = h->root.u.def.value + |
| 14950 | h->root.u.def.section->output_section->vma + |
| 14951 | h->root.u.def.section->output_offset; |
| 14952 | relocation += ptr->m_list->irel->r_addend; |
| 14953 | } |
| 14954 | else |
| 14955 | relocation = 0; |
| 14956 | } |
| 14957 | else if (ptr->sec !=NULL) |
| 14958 | { |
| 14959 | /* Local symbol. */ |
| 14960 | Elf_Internal_Sym sym; |
| 14961 | asection *sec = NULL; |
| 14962 | asection isec; |
| 14963 | asection *isec_ptr = &isec; |
| 14964 | Elf_Internal_Rela irel_backup = *(ptr->irel); |
| 14965 | asection *sec_backup = ptr->sec; |
| 14966 | bfd *abfd = ptr->sec->owner; |
| 14967 | |
| 14968 | if (!nds32_get_local_syms (abfd, sec, &isym)) |
| 14969 | return FALSE; |
| 14970 | isym = isym + ELF32_R_SYM (ptr->irel->r_info); |
| 14971 | |
| 14972 | sec = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 14973 | if (sec != NULL) |
| 14974 | *isec_ptr = *sec; |
| 14975 | sym = *isym; |
| 14976 | |
| 14977 | /* The purpose is same as elf_link_input_bfd. */ |
| 14978 | if (isec_ptr != NULL |
| 14979 | && isec_ptr->sec_info_type == SEC_INFO_TYPE_MERGE |
| 14980 | && ELF_ST_TYPE (isym->st_info) != STT_SECTION) |
| 14981 | { |
| 14982 | sym.st_value = |
| 14983 | _bfd_merged_section_offset (ptr->sec->output_section->owner, &isec_ptr, |
| 14984 | elf_section_data (isec_ptr)->sec_info, |
| 14985 | isym->st_value); |
| 14986 | } |
| 14987 | relocation = _bfd_elf_rela_local_sym (link_info->output_bfd, &sym, |
| 14988 | &ptr->sec, ptr->irel); |
| 14989 | if (ptr->irel != NULL) |
| 14990 | relocation += ptr->irel->r_addend; |
| 14991 | |
| 14992 | /* Restore origin value since there may be some insntructions that |
| 14993 | could not be replaced with ex9.it. */ |
| 14994 | *(ptr->irel) = irel_backup; |
| 14995 | ptr->sec = sec_backup; |
| 14996 | } |
| 14997 | |
| 14998 | return relocation; |
| 14999 | } |
| 15000 | |
| 15001 | /* Import ex9 table and build list. */ |
| 15002 | |
| 15003 | void |
| 15004 | nds32_elf_ex9_import_table (struct bfd_link_info *info) |
| 15005 | { |
| 15006 | int num = 0; |
| 15007 | bfd_byte *contents; |
| 15008 | unsigned long insn; |
| 15009 | FILE *ex9_import_file; |
| 15010 | int update_ex9_table; |
| 15011 | struct elf_nds32_link_hash_table *table; |
| 15012 | |
| 15013 | table = nds32_elf_hash_table (info); |
| 15014 | ex9_import_file = table->ex9_import_file; |
| 15015 | rewind (table->ex9_import_file); |
| 15016 | |
| 15017 | contents = bfd_malloc (sizeof (bfd_byte) * 4); |
| 15018 | |
| 15019 | /* Read instructions from the input file and build the list. */ |
| 15020 | while (!feof (ex9_import_file)) |
| 15021 | { |
| 15022 | char *code; |
| 15023 | struct elf_nds32_insn_times_entry *ptr; |
| 15024 | size_t nread; |
| 15025 | |
| 15026 | nread = fread (contents, sizeof (bfd_byte) * 4, 1, ex9_import_file); |
| 15027 | /* Ignore the final byte 0x0a. */ |
| 15028 | if (nread < 1) |
| 15029 | break; |
| 15030 | insn = bfd_getb32 (contents); |
| 15031 | code = bfd_malloc (sizeof (char) * 9); |
| 15032 | snprintf (code, 9, "%08lx", insn); |
| 15033 | ptr = bfd_malloc (sizeof (struct elf_nds32_insn_times_entry)); |
| 15034 | ptr->string = code; |
| 15035 | ptr->order = num; |
| 15036 | ptr->times = -1; |
| 15037 | ptr->sec = NULL; |
| 15038 | ptr->m_list = NULL; |
| 15039 | ptr->rel_backup.r_offset = 0; |
| 15040 | ptr->rel_backup.r_info = 0; |
| 15041 | ptr->rel_backup.r_addend = 0; |
| 15042 | ptr->irel = NULL; |
| 15043 | ptr->next = NULL; |
| 15044 | nds32_elf_ex9_insert_entry (ptr); |
| 15045 | num++; |
| 15046 | } |
| 15047 | |
| 15048 | update_ex9_table = table->update_ex9_table; |
| 15049 | if (update_ex9_table == 1) |
| 15050 | { |
| 15051 | /* It has to consider of sethi need to use multiple page |
| 15052 | but it not be done yet. */ |
| 15053 | nds32_elf_code_hash_traverse (nds32_elf_examine_insn_times); |
| 15054 | nds32_elf_order_insn_times (info); |
| 15055 | } |
| 15056 | } |
| 15057 | |
| 15058 | /* Export ex9 table. */ |
| 15059 | |
| 15060 | static void |
| 15061 | nds32_elf_ex9_export (struct bfd_link_info *info, |
| 15062 | bfd_byte *contents, int size) |
| 15063 | { |
| 15064 | FILE *ex9_export_file; |
| 15065 | struct elf_nds32_link_hash_table *table; |
| 15066 | |
| 15067 | table = nds32_elf_hash_table (info); |
| 15068 | ex9_export_file = table->ex9_export_file; |
| 15069 | fwrite (contents, sizeof (bfd_byte), size, ex9_export_file); |
| 15070 | fclose (ex9_export_file); |
| 15071 | } |
| 15072 | |
| 15073 | /* Adjust relocations of J and JAL in ex9.itable. |
| 15074 | Export ex9 table. */ |
| 15075 | |
| 15076 | static void |
| 15077 | nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info) |
| 15078 | { |
| 15079 | asection *table_sec = NULL; |
| 15080 | struct elf_nds32_insn_times_entry *ex9_insn = ex9_insn_head; |
| 15081 | struct elf_nds32_insn_times_entry *temp_ptr, *temp_ptr2; |
| 15082 | bfd *it_abfd; |
| 15083 | uint32_t insn, insn_with_reg, source_insn; |
| 15084 | bfd_byte *contents = NULL, *source_contents = NULL; |
| 15085 | int size = 0; |
| 15086 | bfd_vma gp; |
| 15087 | int shift, update_ex9_table, offset = 0; |
| 15088 | reloc_howto_type *howto = NULL; |
| 15089 | Elf_Internal_Rela rel_backup; |
| 15090 | unsigned short insn_ex9; |
| 15091 | struct elf_nds32_link_hash_table *table; |
| 15092 | FILE *ex9_export_file; |
| 15093 | static bfd_boolean done = FALSE; |
| 15094 | |
| 15095 | if (done) |
| 15096 | return; |
| 15097 | |
| 15098 | done = TRUE; |
| 15099 | |
| 15100 | table = nds32_elf_hash_table (link_info); |
| 15101 | if (table) |
| 15102 | table->relax_status |= NDS32_RELAX_EX9_DONE; |
| 15103 | |
| 15104 | |
| 15105 | update_ex9_table = table->update_ex9_table; |
| 15106 | /* Generated ex9.itable exactly. */ |
| 15107 | if (update_ex9_table == 0) |
| 15108 | { |
| 15109 | for (it_abfd = link_info->input_bfds; it_abfd != NULL; |
| 15110 | it_abfd = it_abfd->link.next) |
| 15111 | { |
| 15112 | table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); |
| 15113 | if (table_sec != NULL) |
| 15114 | break; |
| 15115 | } |
| 15116 | |
| 15117 | if (table_sec != NULL) |
| 15118 | { |
| 15119 | bfd *output_bfd; |
| 15120 | |
| 15121 | output_bfd = table_sec->output_section->owner; |
| 15122 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); |
| 15123 | if (table_sec->size == 0) |
| 15124 | return; |
| 15125 | |
| 15126 | if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) |
| 15127 | return; |
| 15128 | } |
| 15129 | } |
| 15130 | else |
| 15131 | { |
| 15132 | /* Set gp. */ |
| 15133 | bfd *output_bfd; |
| 15134 | |
| 15135 | output_bfd = link_info->input_bfds->sections->output_section->owner; |
| 15136 | nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); |
| 15137 | contents = bfd_malloc (sizeof (bfd_byte) * 2048); |
| 15138 | } |
| 15139 | |
| 15140 | /* Relocate instruction. */ |
| 15141 | while (ex9_insn) |
| 15142 | { |
| 15143 | bfd_vma relocation, min_relocation = 0xffffffff; |
| 15144 | |
| 15145 | insn = strtol (ex9_insn->string, NULL, 16); |
| 15146 | insn_with_reg = 0; |
| 15147 | if (ex9_insn->m_list != NULL || ex9_insn->sec != NULL) |
| 15148 | { |
| 15149 | if (ex9_insn->m_list) |
| 15150 | rel_backup = ex9_insn->m_list->rel_backup; |
| 15151 | else |
| 15152 | rel_backup = ex9_insn->rel_backup; |
| 15153 | |
| 15154 | nds32_elf_get_insn_with_reg (&rel_backup, insn, &insn_with_reg); |
| 15155 | howto = |
| 15156 | bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE |
| 15157 | (rel_backup.r_info)); |
| 15158 | shift = howto->rightshift; |
| 15159 | if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_25_PCREL_RELA |
| 15160 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_ORI_RELA |
| 15161 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S0_RELA |
| 15162 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S1_RELA |
| 15163 | || ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_LO12S2_RELA) |
| 15164 | { |
| 15165 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); |
| 15166 | insn = |
| 15167 | insn_with_reg | ((relocation >> shift) & |
| 15168 | nds32_elf_irel_mask (&rel_backup)); |
| 15169 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15170 | } |
| 15171 | else if ((ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3 |
| 15172 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0) |
| 15173 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA15S3_RELA |
| 15174 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA15S0_RELA) |
| 15175 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA12S2_DP_RELA |
| 15176 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA12S2_SP_RELA) |
| 15177 | || (ELF32_R_TYPE (rel_backup.r_info) >= R_NDS32_SDA16S3_RELA |
| 15178 | && ELF32_R_TYPE (rel_backup.r_info) <= R_NDS32_SDA19S0_RELA)) |
| 15179 | { |
| 15180 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); |
| 15181 | insn = |
| 15182 | insn_with_reg | (((relocation - gp) >> shift) & |
| 15183 | nds32_elf_irel_mask (&rel_backup)); |
| 15184 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15185 | } |
| 15186 | else if (ELF32_R_TYPE (rel_backup.r_info) == R_NDS32_HI20_RELA) |
| 15187 | { |
| 15188 | /* Sethi may be multiple entry for one insn. */ |
| 15189 | if (ex9_insn->next && ex9_insn->m_list |
| 15190 | && ex9_insn->m_list == ex9_insn->next->m_list) |
| 15191 | { |
| 15192 | struct elf_link_hash_entry_mul_list *m_list; |
| 15193 | struct elf_nds32_ex9_refix *fix_ptr; |
| 15194 | struct elf_link_hash_entry *h; |
| 15195 | |
| 15196 | temp_ptr = ex9_insn; |
| 15197 | temp_ptr2 = ex9_insn; |
| 15198 | m_list = ex9_insn->m_list; |
| 15199 | while (m_list) |
| 15200 | { |
| 15201 | h = m_list->h_list->h; |
| 15202 | relocation = h->root.u.def.value + |
| 15203 | h->root.u.def.section->output_section->vma + |
| 15204 | h->root.u.def.section->output_offset; |
| 15205 | relocation += m_list->irel->r_addend; |
| 15206 | |
| 15207 | if (relocation < min_relocation) |
| 15208 | min_relocation = relocation; |
| 15209 | m_list = m_list->next; |
| 15210 | } |
| 15211 | relocation = min_relocation; |
| 15212 | |
| 15213 | /* Put insntruction into ex9 table. */ |
| 15214 | insn = insn_with_reg |
| 15215 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); |
| 15216 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15217 | relocation = relocation + 0x1000; /* hi20 */ |
| 15218 | |
| 15219 | while (ex9_insn->next && ex9_insn->m_list |
| 15220 | && ex9_insn->m_list == ex9_insn->next->m_list) |
| 15221 | { |
| 15222 | /* Multiple sethi. */ |
| 15223 | ex9_insn = ex9_insn->next; |
| 15224 | size += 4; |
| 15225 | insn = |
| 15226 | insn_with_reg | ((relocation >> shift) & |
| 15227 | nds32_elf_irel_mask (&rel_backup)); |
| 15228 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15229 | relocation = relocation + 0x1000; /* hi20 */ |
| 15230 | } |
| 15231 | |
| 15232 | fix_ptr = ex9_refix_head; |
| 15233 | while (fix_ptr) |
| 15234 | { |
| 15235 | /* Fix ex9 insn. */ |
| 15236 | /* temp_ptr2 points to the head of multiple sethi. */ |
| 15237 | temp_ptr = temp_ptr2; |
| 15238 | while (fix_ptr->order != temp_ptr->order && fix_ptr->next) |
| 15239 | { |
| 15240 | fix_ptr = fix_ptr->next; |
| 15241 | } |
| 15242 | if (fix_ptr->order != temp_ptr->order) |
| 15243 | break; |
| 15244 | |
| 15245 | /* Set source insn. */ |
| 15246 | relocation = |
| 15247 | fix_ptr->h->root.u.def.value + |
| 15248 | fix_ptr->h->root.u.def.section->output_section->vma + |
| 15249 | fix_ptr->h->root.u.def.section->output_offset; |
| 15250 | relocation += fix_ptr->irel->r_addend; |
| 15251 | /* sethi imm is imm20s. */ |
| 15252 | source_insn = insn_with_reg | ((relocation >> shift) & 0xfffff); |
| 15253 | |
| 15254 | while (temp_ptr) |
| 15255 | { |
| 15256 | /* Match entry and source code. */ |
| 15257 | insn = bfd_getb32 (contents + (temp_ptr->order) * 4 + offset); |
| 15258 | if (insn == source_insn) |
| 15259 | { |
| 15260 | /* Fix the ex9 insn. */ |
| 15261 | if (temp_ptr->order != fix_ptr->order) |
| 15262 | { |
| 15263 | if (!nds32_get_section_contents |
| 15264 | (fix_ptr->sec->owner, fix_ptr->sec, |
| 15265 | &source_contents, TRUE)) |
| 15266 | (*_bfd_error_handler) |
| 15267 | (_("Linker: error cannot fixed ex9 relocation \n")); |
| 15268 | if (temp_ptr->order < 32) |
| 15269 | insn_ex9 = INSN_EX9_IT_2; |
| 15270 | else |
| 15271 | insn_ex9 = INSN_EX9_IT_1; |
| 15272 | insn_ex9 = insn_ex9 | temp_ptr->order; |
| 15273 | bfd_putb16 (insn_ex9, source_contents + fix_ptr->irel->r_offset); |
| 15274 | } |
| 15275 | break; |
| 15276 | } |
| 15277 | else |
| 15278 | { |
| 15279 | if (!temp_ptr->next || temp_ptr->m_list != temp_ptr->next->m_list) |
| 15280 | (*_bfd_error_handler) |
| 15281 | (_("Linker: error cannot fixed ex9 relocation \n")); |
| 15282 | else |
| 15283 | temp_ptr = temp_ptr->next; |
| 15284 | } |
| 15285 | } |
| 15286 | fix_ptr = fix_ptr->next; |
| 15287 | } |
| 15288 | } |
| 15289 | else |
| 15290 | { |
| 15291 | relocation = nds32_elf_ex9_reloc_insn (ex9_insn, link_info); |
| 15292 | insn = insn_with_reg |
| 15293 | | ((relocation >> shift) & nds32_elf_irel_mask (&rel_backup)); |
| 15294 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15295 | } |
| 15296 | } |
| 15297 | } |
| 15298 | else |
| 15299 | { |
| 15300 | /* Insn without relocation does not have to be fixed |
| 15301 | if need to update export table. */ |
| 15302 | if (update_ex9_table == 1) |
| 15303 | bfd_putb32 (insn, contents + (ex9_insn->order) * 4); |
| 15304 | } |
| 15305 | ex9_insn = ex9_insn->next; |
| 15306 | size += 4; |
| 15307 | } |
| 15308 | |
| 15309 | ex9_export_file = table->ex9_export_file; |
| 15310 | if (ex9_export_file != NULL) |
| 15311 | nds32_elf_ex9_export (link_info, contents, table_sec->size); |
| 15312 | else if (update_ex9_table == 1) |
| 15313 | { |
| 15314 | table->ex9_export_file = table->ex9_import_file; |
| 15315 | rewind (table->ex9_export_file); |
| 15316 | nds32_elf_ex9_export (link_info, contents, size); |
| 15317 | } |
| 15318 | } |
| 15319 | |
| 15320 | /* Generate ex9 hash table. */ |
| 15321 | |
| 15322 | static bfd_boolean |
| 15323 | nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec, |
| 15324 | struct bfd_link_info *link_info) |
| 15325 | { |
| 15326 | Elf_Internal_Rela *internal_relocs; |
| 15327 | Elf_Internal_Rela *irelend; |
| 15328 | Elf_Internal_Rela *irel; |
| 15329 | Elf_Internal_Rela *jrel; |
| 15330 | Elf_Internal_Rela rel_backup; |
| 15331 | Elf_Internal_Shdr *symtab_hdr; |
| 15332 | Elf_Internal_Sym *isym = NULL; |
| 15333 | asection *isec; |
| 15334 | struct elf_link_hash_entry **sym_hashes; |
| 15335 | bfd_byte *contents = NULL; |
| 15336 | bfd_vma off = 0; |
| 15337 | unsigned long r_symndx; |
| 15338 | uint32_t insn, insn_with_reg; |
| 15339 | struct elf_link_hash_entry *h; |
| 15340 | int data_flag, shift, align; |
| 15341 | bfd_vma relocation; |
| 15342 | /* Suppress ex9 if `.no_relax ex9' or inner loop. */ |
| 15343 | reloc_howto_type *howto = NULL; |
| 15344 | |
| 15345 | sym_hashes = elf_sym_hashes (abfd); |
| 15346 | /* Load section instructions, relocations, and symbol table. */ |
| 15347 | if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) |
| 15348 | return FALSE; |
| 15349 | |
| 15350 | internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, |
| 15351 | TRUE /* keep_memory */); |
| 15352 | irelend = internal_relocs + sec->reloc_count; |
| 15353 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 15354 | if (!nds32_get_local_syms (abfd, sec, &isym)) |
| 15355 | return FALSE; |
| 15356 | |
| 15357 | /* Check the object if enable ex9. */ |
| 15358 | irel = find_relocs_at_address (internal_relocs, internal_relocs, irelend, |
| 15359 | R_NDS32_RELAX_ENTRY); |
| 15360 | |
| 15361 | /* Check this section trigger ex9 relaxation. */ |
| 15362 | if (irel == NULL |
| 15363 | || irel >= irelend |
| 15364 | || ELF32_R_TYPE (irel->r_info) != R_NDS32_RELAX_ENTRY |
| 15365 | || (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_ENTRY |
| 15366 | && !(irel->r_addend & R_NDS32_RELAX_ENTRY_EX9_FLAG))) |
| 15367 | return TRUE; |
| 15368 | |
| 15369 | irel = internal_relocs; |
| 15370 | |
| 15371 | /* Push each insn into hash table. */ |
| 15372 | while (off < sec->size) |
| 15373 | { |
| 15374 | char code[10]; |
| 15375 | struct elf_nds32_code_hash_entry *entry; |
| 15376 | |
| 15377 | while (irel != NULL && irel < irelend && irel->r_offset < off) |
| 15378 | irel++; |
| 15379 | |
| 15380 | data_flag = nds32_elf_ex9_relocation_check (link_info, &irel, irelend, |
| 15381 | NULL, sec, &off, contents); |
| 15382 | if (data_flag & DATA_EXIST) |
| 15383 | { |
| 15384 | /* We save the move offset in the highest byte. */ |
| 15385 | off += (data_flag >> 24); |
| 15386 | continue; |
| 15387 | } |
| 15388 | |
| 15389 | if (*(contents + off) & 0x80) |
| 15390 | { |
| 15391 | off += 2; |
| 15392 | } |
| 15393 | else |
| 15394 | { |
| 15395 | h = NULL; |
| 15396 | isec = NULL; |
| 15397 | jrel = NULL; |
| 15398 | rel_backup.r_info = 0; |
| 15399 | rel_backup.r_offset = 0; |
| 15400 | rel_backup.r_addend = 0; |
| 15401 | /* Load the instruction and its opcode with register for comparing. */ |
| 15402 | insn = bfd_getb32 (contents + off); |
| 15403 | insn_with_reg = 0; |
| 15404 | if (irel != NULL && irel < irelend && irel->r_offset == off) |
| 15405 | { |
| 15406 | nds32_elf_get_insn_with_reg (irel, insn, &insn_with_reg); |
| 15407 | howto = bfd_elf32_bfd_reloc_type_table_lookup (ELF32_R_TYPE (irel->r_info)); |
| 15408 | shift = howto->rightshift; |
| 15409 | align = (1 << shift) - 1; |
| 15410 | if (ELF32_R_TYPE (irel->r_info) == R_NDS32_25_PCREL_RELA |
| 15411 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_HI20_RELA |
| 15412 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_ORI_RELA |
| 15413 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S0_RELA |
| 15414 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S1_RELA |
| 15415 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_LO12S2_RELA |
| 15416 | ||(ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 |
| 15417 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) |
| 15418 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA |
| 15419 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) |
| 15420 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA |
| 15421 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) |
| 15422 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA |
| 15423 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) |
| 15424 | { |
| 15425 | r_symndx = ELF32_R_SYM (irel->r_info); |
| 15426 | jrel = irel; |
| 15427 | rel_backup = *irel; |
| 15428 | if (r_symndx < symtab_hdr->sh_info) |
| 15429 | { |
| 15430 | /* Local symbol. */ |
| 15431 | int shndx = isym[r_symndx].st_shndx; |
| 15432 | |
| 15433 | bfd_vma st_value = (isym + r_symndx)->st_value; |
| 15434 | isec = elf_elfsections (abfd)[shndx]->bfd_section; |
| 15435 | relocation = (isec->output_section->vma + isec->output_offset |
| 15436 | + st_value + irel->r_addend); |
| 15437 | } |
| 15438 | else |
| 15439 | { |
| 15440 | /* External symbol. */ |
| 15441 | bfd_boolean warned ATTRIBUTE_UNUSED; |
| 15442 | bfd_boolean ignored ATTRIBUTE_UNUSED; |
| 15443 | bfd_boolean unresolved_reloc ATTRIBUTE_UNUSED; |
| 15444 | asection *sym_sec; |
| 15445 | |
| 15446 | /* Maybe there is a better way to get h and relocation */ |
| 15447 | RELOC_FOR_GLOBAL_SYMBOL (link_info, abfd, sec, irel, |
| 15448 | r_symndx, symtab_hdr, sym_hashes, |
| 15449 | h, sym_sec, relocation, |
| 15450 | unresolved_reloc, warned, ignored); |
| 15451 | relocation += irel->r_addend; |
| 15452 | if ((h->root.type != bfd_link_hash_defined |
| 15453 | && h->root.type != bfd_link_hash_defweak) |
| 15454 | || strcmp (h->root.root.string, "_FP_BASE_") == 0) |
| 15455 | { |
| 15456 | off += 4; |
| 15457 | continue; |
| 15458 | } |
| 15459 | } |
| 15460 | |
| 15461 | /* Check for gp relative instruction alignment. */ |
| 15462 | if ((ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3 |
| 15463 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0) |
| 15464 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA15S3_RELA |
| 15465 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA15S0_RELA) |
| 15466 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA12S2_DP_RELA |
| 15467 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA12S2_SP_RELA) |
| 15468 | || (ELF32_R_TYPE (irel->r_info) >= R_NDS32_SDA16S3_RELA |
| 15469 | && ELF32_R_TYPE (irel->r_info) <= R_NDS32_SDA19S0_RELA)) |
| 15470 | { |
| 15471 | bfd_vma gp; |
| 15472 | bfd *output_bfd = sec->output_section->owner; |
| 15473 | bfd_reloc_status_type r; |
| 15474 | |
| 15475 | /* If the symbol is in the abs section, the out_bfd will be null. |
| 15476 | This happens when the relocation has a symbol@GOTOFF. */ |
| 15477 | r = nds32_elf_final_sda_base (output_bfd, link_info, &gp, FALSE); |
| 15478 | if (r != bfd_reloc_ok) |
| 15479 | { |
| 15480 | off += 4; |
| 15481 | continue; |
| 15482 | } |
| 15483 | |
| 15484 | relocation -= gp; |
| 15485 | |
| 15486 | /* Make sure alignment is correct. */ |
| 15487 | if (relocation & align) |
| 15488 | { |
| 15489 | /* Incorrect alignment. */ |
| 15490 | (*_bfd_error_handler) |
| 15491 | (_("%s: warning: unaligned small data access. " |
| 15492 | "For entry: {%d, %d, %d}, addr = 0x%x, align = 0x%x."), |
| 15493 | bfd_get_filename (abfd), irel->r_offset, |
| 15494 | irel->r_info, irel->r_addend, relocation, align); |
| 15495 | off += 4; |
| 15496 | continue; |
| 15497 | } |
| 15498 | } |
| 15499 | |
| 15500 | insn = insn_with_reg |
| 15501 | | ((relocation >> shift) & nds32_elf_irel_mask (irel)); |
| 15502 | } |
| 15503 | else if (ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_BEGIN |
| 15504 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_RELAX_REGION_END |
| 15505 | || ELF32_R_TYPE (irel->r_info) == R_NDS32_NONE) |
| 15506 | { |
| 15507 | /* These relocations do not have to relocate contens, so it can |
| 15508 | be regard as instruction without relocation. */ |
| 15509 | } |
| 15510 | else |
| 15511 | { |
| 15512 | off += 4; |
| 15513 | continue; |
| 15514 | } |
| 15515 | } |
| 15516 | |
| 15517 | snprintf (code, sizeof (code), "%08x", insn); |
| 15518 | /* Copy "code". */ |
| 15519 | entry = (struct elf_nds32_code_hash_entry*) |
| 15520 | bfd_hash_lookup (&ex9_code_table, code, TRUE, TRUE); |
| 15521 | if (entry == NULL) |
| 15522 | { |
| 15523 | (*_bfd_error_handler) |
| 15524 | (_("%P%F: failed creating ex9.it %s hash table: %E\n"), code); |
| 15525 | return FALSE; |
| 15526 | } |
| 15527 | if (h) |
| 15528 | { |
| 15529 | if (h->root.type == bfd_link_hash_undefined) |
| 15530 | return TRUE; |
| 15531 | /* Global symbol. */ |
| 15532 | /* In order to do sethi with different symbol but same value. */ |
| 15533 | if (entry->m_list == NULL) |
| 15534 | { |
| 15535 | struct elf_link_hash_entry_mul_list *m_list_new; |
| 15536 | struct elf_link_hash_entry_list *h_list_new; |
| 15537 | |
| 15538 | m_list_new = (struct elf_link_hash_entry_mul_list *) |
| 15539 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); |
| 15540 | h_list_new = (struct elf_link_hash_entry_list *) |
| 15541 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); |
| 15542 | entry->m_list = m_list_new; |
| 15543 | m_list_new->h_list = h_list_new; |
| 15544 | m_list_new->rel_backup = rel_backup; |
| 15545 | m_list_new->times = 1; |
| 15546 | m_list_new->irel = jrel; |
| 15547 | m_list_new->next = NULL; |
| 15548 | h_list_new->h = h; |
| 15549 | h_list_new->next = NULL; |
| 15550 | } |
| 15551 | else |
| 15552 | { |
| 15553 | struct elf_link_hash_entry_mul_list *m_list = entry->m_list; |
| 15554 | struct elf_link_hash_entry_list *h_list; |
| 15555 | |
| 15556 | while (m_list) |
| 15557 | { |
| 15558 | /* Build the different symbols that point to the same address. */ |
| 15559 | h_list = m_list->h_list; |
| 15560 | if (h_list->h->root.u.def.value == h->root.u.def.value |
| 15561 | && h_list->h->root.u.def.section->output_section->vma |
| 15562 | == h->root.u.def.section->output_section->vma |
| 15563 | && h_list->h->root.u.def.section->output_offset |
| 15564 | == h->root.u.def.section->output_offset |
| 15565 | && m_list->rel_backup.r_addend == rel_backup.r_addend) |
| 15566 | { |
| 15567 | m_list->times++; |
| 15568 | m_list->irel = jrel; |
| 15569 | while (h_list->h != h && h_list->next) |
| 15570 | h_list = h_list->next; |
| 15571 | if (h_list->h != h) |
| 15572 | { |
| 15573 | struct elf_link_hash_entry_list *h_list_new; |
| 15574 | |
| 15575 | h_list_new = (struct elf_link_hash_entry_list *) |
| 15576 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); |
| 15577 | h_list->next = h_list_new; |
| 15578 | h_list_new->h = h; |
| 15579 | h_list_new->next = NULL; |
| 15580 | } |
| 15581 | break; |
| 15582 | } |
| 15583 | /* The sethi case may have different address but the |
| 15584 | hi20 is the same. */ |
| 15585 | else if (ELF32_R_TYPE (jrel->r_info) == R_NDS32_HI20_RELA |
| 15586 | && m_list->next == NULL) |
| 15587 | { |
| 15588 | struct elf_link_hash_entry_mul_list *m_list_new; |
| 15589 | struct elf_link_hash_entry_list *h_list_new; |
| 15590 | |
| 15591 | m_list_new = (struct elf_link_hash_entry_mul_list *) |
| 15592 | bfd_malloc (sizeof (struct elf_link_hash_entry_mul_list)); |
| 15593 | h_list_new = (struct elf_link_hash_entry_list *) |
| 15594 | bfd_malloc (sizeof (struct elf_link_hash_entry_list)); |
| 15595 | m_list->next = m_list_new; |
| 15596 | m_list_new->h_list = h_list_new; |
| 15597 | m_list_new->rel_backup = rel_backup; |
| 15598 | m_list_new->times = 1; |
| 15599 | m_list_new->irel = jrel; |
| 15600 | m_list_new->next = NULL; |
| 15601 | h_list_new->h = h; |
| 15602 | h_list_new->next = NULL; |
| 15603 | break; |
| 15604 | } |
| 15605 | m_list = m_list->next; |
| 15606 | } |
| 15607 | if (!m_list) |
| 15608 | { |
| 15609 | off += 4; |
| 15610 | continue; |
| 15611 | } |
| 15612 | } |
| 15613 | } |
| 15614 | else |
| 15615 | { |
| 15616 | /* Local symbol and insn without relocation*/ |
| 15617 | entry->times++; |
| 15618 | entry->rel_backup = rel_backup; |
| 15619 | } |
| 15620 | |
| 15621 | /* Use in sethi insn with constant and global symbol in same format. */ |
| 15622 | if (!jrel) |
| 15623 | entry->const_insn = 1; |
| 15624 | else |
| 15625 | entry->irel = jrel; |
| 15626 | entry->sec = isec; |
| 15627 | off += 4; |
| 15628 | } |
| 15629 | } |
| 15630 | return TRUE; |
| 15631 | } |
| 15632 | |
| 15633 | /* Set the _ITB_BASE, and point it to ex9 table. */ |
| 15634 | |
| 15635 | bfd_boolean |
| 15636 | nds32_elf_ex9_itb_base (struct bfd_link_info *link_info) |
| 15637 | { |
| 15638 | bfd *abfd; |
| 15639 | asection *sec; |
| 15640 | bfd *output_bfd = NULL; |
| 15641 | struct bfd_link_hash_entry *bh = NULL; |
| 15642 | |
| 15643 | if (is_ITB_BASE_set == 1) |
| 15644 | return TRUE; |
| 15645 | |
| 15646 | is_ITB_BASE_set = 1; |
| 15647 | |
| 15648 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", FALSE, FALSE, TRUE); |
| 15649 | |
| 15650 | if (bh && (bh->type == bfd_link_hash_defined |
| 15651 | || bh->type == bfd_link_hash_defweak)) |
| 15652 | return TRUE; |
| 15653 | |
| 15654 | for (abfd = link_info->input_bfds; abfd != NULL; |
| 15655 | abfd = abfd->link.next) |
| 15656 | { |
| 15657 | sec = bfd_get_section_by_name (abfd, ".ex9.itable"); |
| 15658 | if (sec != NULL) |
| 15659 | { |
| 15660 | output_bfd = sec->output_section->owner; |
| 15661 | break; |
| 15662 | } |
| 15663 | } |
| 15664 | if (output_bfd == NULL) |
| 15665 | { |
| 15666 | output_bfd = link_info->output_bfd; |
| 15667 | if (output_bfd->sections == NULL) |
| 15668 | return TRUE; |
| 15669 | else |
| 15670 | sec = bfd_abs_section_ptr; |
| 15671 | } |
| 15672 | bh = bfd_link_hash_lookup (link_info->hash, "_ITB_BASE_", |
| 15673 | FALSE, FALSE, TRUE); |
| 15674 | return (_bfd_generic_link_add_one_symbol |
| 15675 | (link_info, output_bfd, "_ITB_BASE_", |
| 15676 | BSF_GLOBAL | BSF_WEAK, sec, 0, |
| 15677 | (const char *) NULL, FALSE, get_elf_backend_data |
| 15678 | (output_bfd)->collect, &bh)); |
| 15679 | } /* End EX9.IT */ |
| 15680 | \f |
| 15681 | |
| 15682 | #define ELF_ARCH bfd_arch_nds32 |
| 15683 | #define ELF_MACHINE_CODE EM_NDS32 |
| 15684 | #define ELF_MAXPAGESIZE 0x1000 |
| 15685 | #define ELF_TARGET_ID NDS32_ELF_DATA |
| 15686 | |
| 15687 | #define TARGET_BIG_SYM nds32_elf32_be_vec |
| 15688 | #define TARGET_BIG_NAME "elf32-nds32be" |
| 15689 | #define TARGET_LITTLE_SYM nds32_elf32_le_vec |
| 15690 | #define TARGET_LITTLE_NAME "elf32-nds32le" |
| 15691 | |
| 15692 | #define elf_info_to_howto nds32_info_to_howto |
| 15693 | #define elf_info_to_howto_rel nds32_info_to_howto_rel |
| 15694 | |
| 15695 | #define bfd_elf32_bfd_link_hash_table_create nds32_elf_link_hash_table_create |
| 15696 | #define bfd_elf32_bfd_merge_private_bfd_data nds32_elf_merge_private_bfd_data |
| 15697 | #define bfd_elf32_bfd_print_private_bfd_data nds32_elf_print_private_bfd_data |
| 15698 | #define bfd_elf32_bfd_relax_section nds32_elf_relax_section |
| 15699 | #define bfd_elf32_bfd_set_private_flags nds32_elf_set_private_flags |
| 15700 | |
| 15701 | #define bfd_elf32_mkobject nds32_elf_mkobject |
| 15702 | #define elf_backend_action_discarded nds32_elf_action_discarded |
| 15703 | #define elf_backend_add_symbol_hook nds32_elf_add_symbol_hook |
| 15704 | #define elf_backend_check_relocs nds32_elf_check_relocs |
| 15705 | #define elf_backend_adjust_dynamic_symbol nds32_elf_adjust_dynamic_symbol |
| 15706 | #define elf_backend_create_dynamic_sections nds32_elf_create_dynamic_sections |
| 15707 | #define elf_backend_finish_dynamic_sections nds32_elf_finish_dynamic_sections |
| 15708 | #define elf_backend_finish_dynamic_symbol nds32_elf_finish_dynamic_symbol |
| 15709 | #define elf_backend_size_dynamic_sections nds32_elf_size_dynamic_sections |
| 15710 | #define elf_backend_relocate_section nds32_elf_relocate_section |
| 15711 | #define elf_backend_gc_mark_hook nds32_elf_gc_mark_hook |
| 15712 | #define elf_backend_gc_sweep_hook nds32_elf_gc_sweep_hook |
| 15713 | #define elf_backend_grok_prstatus nds32_elf_grok_prstatus |
| 15714 | #define elf_backend_grok_psinfo nds32_elf_grok_psinfo |
| 15715 | #define elf_backend_reloc_type_class nds32_elf_reloc_type_class |
| 15716 | #define elf_backend_copy_indirect_symbol nds32_elf_copy_indirect_symbol |
| 15717 | #define elf_backend_link_output_symbol_hook nds32_elf_output_symbol_hook |
| 15718 | #define elf_backend_output_arch_syms nds32_elf_output_arch_syms |
| 15719 | #define elf_backend_object_p nds32_elf_object_p |
| 15720 | #define elf_backend_final_write_processing nds32_elf_final_write_processing |
| 15721 | #define elf_backend_special_sections nds32_elf_special_sections |
| 15722 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
| 15723 | nds32_elf_get_relocated_section_contents |
| 15724 | |
| 15725 | #define elf_backend_can_gc_sections 1 |
| 15726 | #define elf_backend_can_refcount 1 |
| 15727 | #define elf_backend_want_got_plt 1 |
| 15728 | #define elf_backend_plt_readonly 1 |
| 15729 | #define elf_backend_want_plt_sym 0 |
| 15730 | #define elf_backend_got_header_size 12 |
| 15731 | #define elf_backend_may_use_rel_p 1 |
| 15732 | #define elf_backend_default_use_rela_p 1 |
| 15733 | #define elf_backend_may_use_rela_p 1 |
| 15734 | |
| 15735 | #include "elf32-target.h" |
| 15736 | |
| 15737 | #undef ELF_MAXPAGESIZE |
| 15738 | #define ELF_MAXPAGESIZE 0x2000 |
| 15739 | |
| 15740 | #undef TARGET_BIG_SYM |
| 15741 | #define TARGET_BIG_SYM nds32_elf32_linux_be_vec |
| 15742 | #undef TARGET_BIG_NAME |
| 15743 | #define TARGET_BIG_NAME "elf32-nds32be-linux" |
| 15744 | #undef TARGET_LITTLE_SYM |
| 15745 | #define TARGET_LITTLE_SYM nds32_elf32_linux_le_vec |
| 15746 | #undef TARGET_LITTLE_NAME |
| 15747 | #define TARGET_LITTLE_NAME "elf32-nds32le-linux" |
| 15748 | #undef elf32_bed |
| 15749 | #define elf32_bed elf32_nds32_lin_bed |
| 15750 | |
| 15751 | #include "elf32-target.h" |