projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 3a71aa26 AM |
2 | Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, |
| 3 | 2009 Free Software Foundation, Inc. | |
| 5bd4f169 AM |
4 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
| 5 | based on elf32-ppc.c by Ian Lance Taylor. | |
| d37c89e5 | 6 | Largely rewritten by Alan Modra <amodra@bigpond.net.au> |
| 5bd4f169 | 7 | |
| ae9a127f | 8 | This file is part of BFD, the Binary File Descriptor library. |
| 5bd4f169 | 9 | |
| ae9a127f NC |
10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by | |
| cd123cb7 | 12 | the Free Software Foundation; either version 3 of the License, or |
| ae9a127f | 13 | (at your option) any later version. |
| 5bd4f169 | 14 | |
| ae9a127f NC |
15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 18 | GNU General Public License for more details. | |
| 5bd4f169 | 19 | |
| 4ce794b7 AM |
20 | You should have received a copy of the GNU General Public License along |
| 21 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 3e110533 | 22 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 5bd4f169 | 23 | |
| cd123cb7 | 24 | |
| 4ce794b7 AM |
25 | /* The 64-bit PowerPC ELF ABI may be found at |
| 26 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
| 27 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
| 5bd4f169 | 28 | |
| 3db64b00 | 29 | #include "sysdep.h" |
| 183e98be | 30 | #include <stdarg.h> |
| 5bd4f169 | 31 | #include "bfd.h" |
| 5bd4f169 AM |
32 | #include "bfdlink.h" |
| 33 | #include "libbfd.h" | |
| 34 | #include "elf-bfd.h" | |
| 04c9666a | 35 | #include "elf/ppc64.h" |
| 5d1634d7 | 36 | #include "elf64-ppc.h" |
| 5bd4f169 | 37 | |
| 805fc799 | 38 | static bfd_reloc_status_type ppc64_elf_ha_reloc |
| 4ce794b7 | 39 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 AM |
40 | static bfd_reloc_status_type ppc64_elf_branch_reloc |
| 41 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
| 805fc799 | 42 | static bfd_reloc_status_type ppc64_elf_brtaken_reloc |
| 4ce794b7 | 43 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 44 | static bfd_reloc_status_type ppc64_elf_sectoff_reloc |
| 4ce794b7 | 45 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 46 | static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc |
| 4ce794b7 | 47 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 48 | static bfd_reloc_status_type ppc64_elf_toc_reloc |
| 4ce794b7 | 49 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 50 | static bfd_reloc_status_type ppc64_elf_toc_ha_reloc |
| 4ce794b7 | 51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 52 | static bfd_reloc_status_type ppc64_elf_toc64_reloc |
| 4ce794b7 | 53 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 805fc799 | 54 | static bfd_reloc_status_type ppc64_elf_unhandled_reloc |
| 4ce794b7 | 55 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 2441e016 AM |
56 | static bfd_vma opd_entry_value |
| 57 | (asection *, bfd_vma, asection **, bfd_vma *); | |
| 5bd4f169 | 58 | |
| ad8e1ba5 AM |
59 | #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec |
| 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" | |
| 61 | #define TARGET_BIG_SYM bfd_elf64_powerpc_vec | |
| 62 | #define TARGET_BIG_NAME "elf64-powerpc" | |
| 63 | #define ELF_ARCH bfd_arch_powerpc | |
| 64 | #define ELF_MACHINE_CODE EM_PPC64 | |
| 65 | #define ELF_MAXPAGESIZE 0x10000 | |
| 24718e3b | 66 | #define ELF_COMMONPAGESIZE 0x1000 |
| ad8e1ba5 AM |
67 | #define elf_info_to_howto ppc64_elf_info_to_howto |
| 68 | ||
| 69 | #define elf_backend_want_got_sym 0 | |
| 70 | #define elf_backend_want_plt_sym 0 | |
| 71 | #define elf_backend_plt_alignment 3 | |
| 72 | #define elf_backend_plt_not_loaded 1 | |
| ad8e1ba5 | 73 | #define elf_backend_got_header_size 8 |
| ad8e1ba5 AM |
74 | #define elf_backend_can_gc_sections 1 |
| 75 | #define elf_backend_can_refcount 1 | |
| 76 | #define elf_backend_rela_normal 1 | |
| 6bfdb61b | 77 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 78 | |
| e717da7e | 79 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 80 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| 157090f7 | 81 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ad8e1ba5 AM |
82 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 83 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook | |
| 84 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 85 | #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free | |
| 90e3cdf2 | 86 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| ad8e1ba5 AM |
87 | |
| 88 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
89 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 90 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 91 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| ad8e1ba5 AM |
92 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
| 93 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
| 555cd476 | 94 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| 7d9616d7 | 95 | #define elf_backend_check_directives ppc64_elf_process_dot_syms |
| 97fed1c9 | 96 | #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup |
| 8387904d | 97 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 98 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 99 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 100 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
101 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 102 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 103 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 104 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 105 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust | |
| 106 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| 74541ad4 | 107 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 108 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
109 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 110 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 111 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 112 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 113 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 114 | #define elf_backend_special_sections ppc64_elf_special_sections |
| ad8e1ba5 | 115 | |
| 5bd4f169 AM |
116 | /* The name of the dynamic interpreter. This is put in the .interp |
| 117 | section. */ | |
| 118 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 119 | ||
| 120 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| 121 | #define PLT_ENTRY_SIZE 24 | |
| 122 | ||
| 123 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| 5d1634d7 | 124 | #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE |
| 5bd4f169 AM |
125 | |
| 126 | /* TOC base pointers offset from start of TOC. */ | |
| 411e1bfb AM |
127 | #define TOC_BASE_OFF 0x8000 |
| 128 | ||
| 129 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 130 | #define TP_OFFSET 0x7000 | |
| 131 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 132 | |
| ad8e1ba5 AM |
133 | /* .plt call stub instructions. The normal stub is like this, but |
| 134 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| ac2df442 | 135 | insert an addi to adjust r12. */ |
| ad8e1ba5 | 136 | #define PLT_CALL_STUB_SIZE (7*4) |
| 5d1634d7 AM |
137 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ |
| 138 | #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */ | |
| 139 | #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */ | |
| 5d1634d7 | 140 | #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */ |
| ac2df442 | 141 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */ |
| 5d1634d7 AM |
142 | /* ld %r11,xxx+16@l(%r12) */ |
| 143 | #define BCTR 0x4e800420 /* bctr */ | |
| 144 | ||
| 5d1634d7 | 145 | |
| ee4bf8d2 | 146 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */ |
| ac2df442 | 147 | #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */ |
| ad8e1ba5 AM |
148 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 149 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 150 | ||
| ac2df442 AM |
151 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 152 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 153 | ||
| ad8e1ba5 AM |
154 | #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */ |
| 155 | ||
| ee4bf8d2 | 156 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 157 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
158 | /* 0: */ |
| 159 | /* .quad plt0-1f */ | |
| 160 | /* __glink: */ | |
| 161 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 162 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 163 | /* 1: */ | |
| 164 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 165 | #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */ | |
| 166 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ | |
| 167 | #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */ | |
| 168 | /* ld %11,0(%12) */ | |
| 169 | /* ld %2,8(%12) */ | |
| 170 | /* mtctr %11 */ | |
| 171 | /* ld %11,16(%12) */ | |
| 172 | /* bctr */ | |
| 5d1634d7 AM |
173 | |
| 174 | /* Pad with this. */ | |
| 175 | #define NOP 0x60000000 | |
| 176 | ||
| 721956f4 AM |
177 | /* Some other nops. */ |
| 178 | #define CROR_151515 0x4def7b82 | |
| 179 | #define CROR_313131 0x4ffffb82 | |
| 180 | ||
| cedb70c5 | 181 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
182 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 183 | #define B_DOT 0x48000000 /* b . */ | |
| 184 | ||
| 185 | /* After that, we need two instructions to load the index, followed by | |
| 186 | a branch. */ | |
| 187 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 188 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 189 | |
| deb0e272 AM |
190 | /* Instructions used by the save and restore reg functions. */ |
| 191 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 192 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 193 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 194 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
195 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 196 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
197 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 198 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 199 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 200 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
201 | #define BLR 0x4e800020 /* blr */ |
| 202 | ||
| 41bd81ab AM |
203 | /* Since .opd is an array of descriptors and each entry will end up |
| 204 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 205 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 206 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
207 | #ifndef NO_OPD_RELOCS |
| 208 | #define NO_OPD_RELOCS 0 | |
| 209 | #endif | |
| 5bd4f169 | 210 | \f |
| f5e87a1d | 211 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 212 | |
| 5bd4f169 | 213 | /* Relocation HOWTO's. */ |
| 04c9666a | 214 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
215 | |
| 216 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 217 | /* This reloc does nothing. */ | |
| 218 | HOWTO (R_PPC64_NONE, /* type */ | |
| 219 | 0, /* rightshift */ | |
| 411e1bfb AM |
220 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 221 | 32, /* bitsize */ | |
| b34976b6 | 222 | FALSE, /* pc_relative */ |
| 5bd4f169 | 223 | 0, /* bitpos */ |
| f5e87a1d | 224 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
225 | bfd_elf_generic_reloc, /* special_function */ |
| 226 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 227 | FALSE, /* partial_inplace */ |
| d006db6c | 228 | 0, /* src_mask */ |
| 5bd4f169 | 229 | 0, /* dst_mask */ |
| b34976b6 | 230 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
231 | |
| 232 | /* A standard 32 bit relocation. */ | |
| 233 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 234 | 0, /* rightshift */ | |
| 235 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 236 | 32, /* bitsize */ | |
| b34976b6 | 237 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
238 | 0, /* bitpos */ |
| 239 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 240 | bfd_elf_generic_reloc, /* special_function */ | |
| 241 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 242 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
243 | 0, /* src_mask */ |
| 244 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 245 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
246 | |
| 247 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 248 | FIXME: we don't check that, we just clear them. */ | |
| 249 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 250 | 0, /* rightshift */ | |
| 251 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 252 | 26, /* bitsize */ | |
| b34976b6 | 253 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
254 | 0, /* bitpos */ |
| 255 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 256 | bfd_elf_generic_reloc, /* special_function */ | |
| 257 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 258 | FALSE, /* partial_inplace */ |
| d006db6c | 259 | 0, /* src_mask */ |
| f5e87a1d | 260 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 261 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
262 | |
| 263 | /* A standard 16 bit relocation. */ | |
| 264 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 265 | 0, /* rightshift */ | |
| 266 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 267 | 16, /* bitsize */ | |
| b34976b6 | 268 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
269 | 0, /* bitpos */ |
| 270 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 271 | bfd_elf_generic_reloc, /* special_function */ | |
| 272 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 273 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
274 | 0, /* src_mask */ |
| 275 | 0xffff, /* dst_mask */ | |
| b34976b6 | 276 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
277 | |
| 278 | /* A 16 bit relocation without overflow. */ | |
| 279 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 280 | 0, /* rightshift */ | |
| 281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 282 | 16, /* bitsize */ | |
| b34976b6 | 283 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
284 | 0, /* bitpos */ |
| 285 | complain_overflow_dont,/* complain_on_overflow */ | |
| 286 | bfd_elf_generic_reloc, /* special_function */ | |
| 287 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 288 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
289 | 0, /* src_mask */ |
| 290 | 0xffff, /* dst_mask */ | |
| b34976b6 | 291 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
292 | |
| 293 | /* Bits 16-31 of an address. */ | |
| 294 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 295 | 16, /* rightshift */ | |
| 296 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 297 | 16, /* bitsize */ | |
| b34976b6 | 298 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
299 | 0, /* bitpos */ |
| 300 | complain_overflow_dont, /* complain_on_overflow */ | |
| 301 | bfd_elf_generic_reloc, /* special_function */ | |
| 302 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 303 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
304 | 0, /* src_mask */ |
| 305 | 0xffff, /* dst_mask */ | |
| b34976b6 | 306 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
307 | |
| 308 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 309 | bits, treated as a signed number, is negative. */ | |
| 310 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 311 | 16, /* rightshift */ | |
| 312 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 313 | 16, /* bitsize */ | |
| b34976b6 | 314 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
315 | 0, /* bitpos */ |
| 316 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 317 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 318 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 319 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
320 | 0, /* src_mask */ |
| 321 | 0xffff, /* dst_mask */ | |
| b34976b6 | 322 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
323 | |
| 324 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 325 | FIXME: we don't check that, we just clear them. */ | |
| 326 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 327 | 0, /* rightshift */ | |
| 328 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 329 | 16, /* bitsize */ | |
| b34976b6 | 330 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
331 | 0, /* bitpos */ |
| 332 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 2441e016 | 333 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 334 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 335 | FALSE, /* partial_inplace */ |
| d006db6c | 336 | 0, /* src_mask */ |
| f5e87a1d | 337 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 338 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
339 | |
| 340 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 341 | indicate that the branch is expected to be taken. The lower two | |
| 342 | bits must be zero. */ | |
| 343 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 344 | 0, /* rightshift */ | |
| 345 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 346 | 16, /* bitsize */ | |
| b34976b6 | 347 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
348 | 0, /* bitpos */ |
| 349 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 350 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 351 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 352 | FALSE, /* partial_inplace */ |
| d006db6c | 353 | 0, /* src_mask */ |
| f5e87a1d | 354 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 355 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
356 | |
| 357 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 358 | indicate that the branch is not expected to be taken. The lower | |
| 359 | two bits must be zero. */ | |
| 360 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 361 | 0, /* rightshift */ | |
| 362 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 363 | 16, /* bitsize */ | |
| b34976b6 | 364 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
365 | 0, /* bitpos */ |
| 366 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 367 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 368 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 369 | FALSE, /* partial_inplace */ |
| d006db6c | 370 | 0, /* src_mask */ |
| f5e87a1d | 371 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 372 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
373 | |
| 374 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 375 | HOWTO (R_PPC64_REL24, /* type */ | |
| 376 | 0, /* rightshift */ | |
| 377 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 378 | 26, /* bitsize */ | |
| b34976b6 | 379 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
380 | 0, /* bitpos */ |
| 381 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 382 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 383 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 384 | FALSE, /* partial_inplace */ |
| d006db6c | 385 | 0, /* src_mask */ |
| f5e87a1d | 386 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 387 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
388 | |
| 389 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 390 | HOWTO (R_PPC64_REL14, /* type */ | |
| 391 | 0, /* rightshift */ | |
| 392 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 393 | 16, /* bitsize */ | |
| b34976b6 | 394 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
395 | 0, /* bitpos */ |
| 396 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 397 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 398 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 399 | FALSE, /* partial_inplace */ |
| d006db6c | 400 | 0, /* src_mask */ |
| f5e87a1d | 401 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 402 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
403 | |
| 404 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 405 | the branch is expected to be taken. The lower two bits must be | |
| 406 | zero. */ | |
| 407 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 408 | 0, /* rightshift */ | |
| 409 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 410 | 16, /* bitsize */ | |
| b34976b6 | 411 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
412 | 0, /* bitpos */ |
| 413 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 414 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 415 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 416 | FALSE, /* partial_inplace */ |
| d006db6c | 417 | 0, /* src_mask */ |
| f5e87a1d | 418 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 419 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
420 | |
| 421 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 422 | the branch is not expected to be taken. The lower two bits must | |
| 423 | be zero. */ | |
| 424 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 425 | 0, /* rightshift */ | |
| 426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 427 | 16, /* bitsize */ | |
| b34976b6 | 428 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
429 | 0, /* bitpos */ |
| 430 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 431 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 432 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 433 | FALSE, /* partial_inplace */ |
| d006db6c | 434 | 0, /* src_mask */ |
| f5e87a1d | 435 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 436 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
437 | |
| 438 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 439 | symbol. */ | |
| 440 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 441 | 0, /* rightshift */ | |
| 442 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 443 | 16, /* bitsize */ | |
| b34976b6 | 444 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
445 | 0, /* bitpos */ |
| 446 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 447 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 448 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 449 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
450 | 0, /* src_mask */ |
| 451 | 0xffff, /* dst_mask */ | |
| b34976b6 | 452 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
453 | |
| 454 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 455 | the symbol. */ | |
| 456 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 457 | 0, /* rightshift */ | |
| 458 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 459 | 16, /* bitsize */ | |
| b34976b6 | 460 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
461 | 0, /* bitpos */ |
| 462 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 463 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 464 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 465 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
466 | 0, /* src_mask */ |
| 467 | 0xffff, /* dst_mask */ | |
| b34976b6 | 468 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
469 | |
| 470 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 471 | the symbol. */ | |
| 472 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 473 | 16, /* rightshift */ | |
| 474 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 475 | 16, /* bitsize */ | |
| b34976b6 | 476 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
477 | 0, /* bitpos */ |
| 478 | complain_overflow_dont,/* complain_on_overflow */ | |
| 805fc799 | 479 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 480 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 481 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
482 | 0, /* src_mask */ |
| 483 | 0xffff, /* dst_mask */ | |
| b34976b6 | 484 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
485 | |
| 486 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 487 | the symbol. */ | |
| 488 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 489 | 16, /* rightshift */ | |
| 490 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 491 | 16, /* bitsize */ | |
| b34976b6 | 492 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
493 | 0, /* bitpos */ |
| 494 | complain_overflow_dont,/* complain_on_overflow */ | |
| 805fc799 | 495 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 496 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 497 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
498 | 0, /* src_mask */ |
| 499 | 0xffff, /* dst_mask */ | |
| b34976b6 | 500 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
501 | |
| 502 | /* This is used only by the dynamic linker. The symbol should exist | |
| 503 | both in the object being run and in some shared library. The | |
| 504 | dynamic linker copies the data addressed by the symbol from the | |
| 505 | shared library into the object, because the object being | |
| 506 | run has to have the data at some particular address. */ | |
| 507 | HOWTO (R_PPC64_COPY, /* type */ | |
| 508 | 0, /* rightshift */ | |
| f5e87a1d AM |
509 | 0, /* this one is variable size */ |
| 510 | 0, /* bitsize */ | |
| b34976b6 | 511 | FALSE, /* pc_relative */ |
| 5bd4f169 | 512 | 0, /* bitpos */ |
| f5e87a1d AM |
513 | complain_overflow_dont, /* complain_on_overflow */ |
| 514 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 515 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 516 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
517 | 0, /* src_mask */ |
| 518 | 0, /* dst_mask */ | |
| b34976b6 | 519 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
520 | |
| 521 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 522 | entries. */ | |
| 523 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 524 | 0, /* rightshift */ | |
| 525 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 526 | 64, /* bitsize */ | |
| b34976b6 | 527 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
528 | 0, /* bitpos */ |
| 529 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 530 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 531 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 532 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 533 | 0, /* src_mask */ |
| f5e87a1d | 534 | ONES (64), /* dst_mask */ |
| b34976b6 | 535 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
536 | |
| 537 | /* Created by the link editor. Marks a procedure linkage table | |
| 538 | entry for a symbol. */ | |
| 539 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 540 | 0, /* rightshift */ | |
| 541 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 542 | 0, /* bitsize */ | |
| b34976b6 | 543 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
544 | 0, /* bitpos */ |
| 545 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 547 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 548 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
549 | 0, /* src_mask */ |
| 550 | 0, /* dst_mask */ | |
| b34976b6 | 551 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
552 | |
| 553 | /* Used only by the dynamic linker. When the object is run, this | |
| 554 | doubleword64 is set to the load address of the object, plus the | |
| 555 | addend. */ | |
| 556 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 557 | 0, /* rightshift */ | |
| 558 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 559 | 64, /* bitsize */ | |
| b34976b6 | 560 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
561 | 0, /* bitpos */ |
| 562 | complain_overflow_dont, /* complain_on_overflow */ | |
| 563 | bfd_elf_generic_reloc, /* special_function */ | |
| 564 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 565 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 566 | 0, /* src_mask */ |
| f5e87a1d | 567 | ONES (64), /* dst_mask */ |
| b34976b6 | 568 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
569 | |
| 570 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 571 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 572 | 0, /* rightshift */ | |
| 573 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 574 | 32, /* bitsize */ | |
| b34976b6 | 575 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
576 | 0, /* bitpos */ |
| 577 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 578 | bfd_elf_generic_reloc, /* special_function */ | |
| 579 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 580 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
581 | 0, /* src_mask */ |
| 582 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 583 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
584 | |
| 585 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 586 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 587 | 0, /* rightshift */ | |
| 588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 589 | 16, /* bitsize */ | |
| b34976b6 | 590 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
591 | 0, /* bitpos */ |
| 592 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 593 | bfd_elf_generic_reloc, /* special_function */ | |
| 594 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 595 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
596 | 0, /* src_mask */ |
| 597 | 0xffff, /* dst_mask */ | |
| b34976b6 | 598 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
599 | |
| 600 | /* 32-bit PC relative. */ | |
| 601 | HOWTO (R_PPC64_REL32, /* type */ | |
| 602 | 0, /* rightshift */ | |
| 603 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 604 | 32, /* bitsize */ | |
| b34976b6 | 605 | TRUE, /* pc_relative */ |
| 5bd4f169 | 606 | 0, /* bitpos */ |
| cedb70c5 | 607 | /* FIXME: Verify. Was complain_overflow_bitfield. */ |
| 5bd4f169 AM |
608 | complain_overflow_signed, /* complain_on_overflow */ |
| 609 | bfd_elf_generic_reloc, /* special_function */ | |
| 610 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 611 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
612 | 0, /* src_mask */ |
| 613 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 614 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 615 | |
| 10ed1bba | 616 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
617 | HOWTO (R_PPC64_PLT32, /* type */ |
| 618 | 0, /* rightshift */ | |
| 619 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 620 | 32, /* bitsize */ | |
| b34976b6 | 621 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
622 | 0, /* bitpos */ |
| 623 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 624 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 625 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 626 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 627 | 0, /* src_mask */ |
| f5e87a1d | 628 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 629 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
630 | |
| 631 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 632 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 633 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 634 | 0, /* rightshift */ | |
| 635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 636 | 32, /* bitsize */ | |
| b34976b6 | 637 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
638 | 0, /* bitpos */ |
| 639 | complain_overflow_signed, /* complain_on_overflow */ | |
| 640 | bfd_elf_generic_reloc, /* special_function */ | |
| 641 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 642 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 643 | 0, /* src_mask */ |
| f5e87a1d | 644 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 645 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
646 | |
| 647 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 648 | the symbol. */ | |
| 649 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 650 | 0, /* rightshift */ | |
| 651 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 652 | 16, /* bitsize */ | |
| b34976b6 | 653 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
654 | 0, /* bitpos */ |
| 655 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 656 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 657 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 658 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
659 | 0, /* src_mask */ |
| 660 | 0xffff, /* dst_mask */ | |
| b34976b6 | 661 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
662 | |
| 663 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 664 | the symbol. */ | |
| 665 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 666 | 16, /* rightshift */ | |
| 667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 668 | 16, /* bitsize */ | |
| b34976b6 | 669 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
670 | 0, /* bitpos */ |
| 671 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 672 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 673 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 674 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
675 | 0, /* src_mask */ |
| 676 | 0xffff, /* dst_mask */ | |
| b34976b6 | 677 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
678 | |
| 679 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 680 | the symbol. */ | |
| 681 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 682 | 16, /* rightshift */ | |
| 683 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 684 | 16, /* bitsize */ | |
| b34976b6 | 685 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
686 | 0, /* bitpos */ |
| 687 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 688 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 689 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 690 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
691 | 0, /* src_mask */ |
| 692 | 0xffff, /* dst_mask */ | |
| b34976b6 | 693 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 694 | |
| c061c2d8 | 695 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
696 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 697 | 0, /* rightshift */ | |
| c061c2d8 AM |
698 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 699 | 16, /* bitsize */ | |
| b34976b6 | 700 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
701 | 0, /* bitpos */ |
| 702 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 703 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 704 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 705 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 706 | 0, /* src_mask */ |
| c061c2d8 | 707 | 0xffff, /* dst_mask */ |
| b34976b6 | 708 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 709 | |
| c061c2d8 | 710 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
711 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 712 | 0, /* rightshift */ | |
| 713 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 714 | 16, /* bitsize */ | |
| b34976b6 | 715 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
716 | 0, /* bitpos */ |
| 717 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 718 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 719 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 720 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
721 | 0, /* src_mask */ |
| 722 | 0xffff, /* dst_mask */ | |
| b34976b6 | 723 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
724 | |
| 725 | /* 16-bit upper half section relative relocation. */ | |
| 726 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 727 | 16, /* rightshift */ | |
| 728 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 729 | 16, /* bitsize */ | |
| b34976b6 | 730 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
731 | 0, /* bitpos */ |
| 732 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 733 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 734 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 735 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
736 | 0, /* src_mask */ |
| 737 | 0xffff, /* dst_mask */ | |
| b34976b6 | 738 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
739 | |
| 740 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 741 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 742 | 16, /* rightshift */ | |
| 743 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 744 | 16, /* bitsize */ | |
| b34976b6 | 745 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
746 | 0, /* bitpos */ |
| 747 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 748 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 749 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 750 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
751 | 0, /* src_mask */ |
| 752 | 0xffff, /* dst_mask */ | |
| b34976b6 | 753 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 754 | |
| 04c9666a AM |
755 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 756 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
757 | 2, /* rightshift */ |
| 758 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 759 | 30, /* bitsize */ | |
| b34976b6 | 760 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
761 | 0, /* bitpos */ |
| 762 | complain_overflow_dont, /* complain_on_overflow */ | |
| 763 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 764 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 765 | FALSE, /* partial_inplace */ |
| d006db6c | 766 | 0, /* src_mask */ |
| 5bd4f169 | 767 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 768 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
769 | |
| 770 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 771 | ||
| 772 | /* A standard 64-bit relocation. */ | |
| 773 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 774 | 0, /* rightshift */ | |
| 775 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 776 | 64, /* bitsize */ | |
| b34976b6 | 777 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
778 | 0, /* bitpos */ |
| 779 | complain_overflow_dont, /* complain_on_overflow */ | |
| 780 | bfd_elf_generic_reloc, /* special_function */ | |
| 781 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 782 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 783 | 0, /* src_mask */ |
| f5e87a1d | 784 | ONES (64), /* dst_mask */ |
| b34976b6 | 785 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
786 | |
| 787 | /* The bits 32-47 of an address. */ | |
| 788 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 789 | 32, /* rightshift */ | |
| 790 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 791 | 16, /* bitsize */ | |
| b34976b6 | 792 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
793 | 0, /* bitpos */ |
| 794 | complain_overflow_dont, /* complain_on_overflow */ | |
| 795 | bfd_elf_generic_reloc, /* special_function */ | |
| 796 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 797 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
798 | 0, /* src_mask */ |
| 799 | 0xffff, /* dst_mask */ | |
| b34976b6 | 800 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
801 | |
| 802 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 803 | 16 bits, treated as a signed number, is negative. */ | |
| 804 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 805 | 32, /* rightshift */ | |
| 806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 807 | 16, /* bitsize */ | |
| b34976b6 | 808 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
809 | 0, /* bitpos */ |
| 810 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 811 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 812 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 813 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
814 | 0, /* src_mask */ |
| 815 | 0xffff, /* dst_mask */ | |
| b34976b6 | 816 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
817 | |
| 818 | /* The bits 48-63 of an address. */ | |
| 819 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 820 | 48, /* rightshift */ | |
| 821 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 822 | 16, /* bitsize */ | |
| b34976b6 | 823 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
824 | 0, /* bitpos */ |
| 825 | complain_overflow_dont, /* complain_on_overflow */ | |
| 826 | bfd_elf_generic_reloc, /* special_function */ | |
| 827 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 828 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
829 | 0, /* src_mask */ |
| 830 | 0xffff, /* dst_mask */ | |
| b34976b6 | 831 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
832 | |
| 833 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 834 | 16 bits, treated as a signed number, is negative. */ | |
| 835 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 836 | 48, /* rightshift */ | |
| 837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 838 | 16, /* bitsize */ | |
| b34976b6 | 839 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
840 | 0, /* bitpos */ |
| 841 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 842 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 843 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 844 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
845 | 0, /* src_mask */ |
| 846 | 0xffff, /* dst_mask */ | |
| b34976b6 | 847 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
848 | |
| 849 | /* Like ADDR64, but may be unaligned. */ | |
| 850 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 851 | 0, /* rightshift */ | |
| 852 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 853 | 64, /* bitsize */ | |
| b34976b6 | 854 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
855 | 0, /* bitpos */ |
| 856 | complain_overflow_dont, /* complain_on_overflow */ | |
| 857 | bfd_elf_generic_reloc, /* special_function */ | |
| 858 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 859 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 860 | 0, /* src_mask */ |
| f5e87a1d | 861 | ONES (64), /* dst_mask */ |
| b34976b6 | 862 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
863 | |
| 864 | /* 64-bit relative relocation. */ | |
| 865 | HOWTO (R_PPC64_REL64, /* type */ | |
| 866 | 0, /* rightshift */ | |
| 867 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 868 | 64, /* bitsize */ | |
| b34976b6 | 869 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
870 | 0, /* bitpos */ |
| 871 | complain_overflow_dont, /* complain_on_overflow */ | |
| 872 | bfd_elf_generic_reloc, /* special_function */ | |
| 873 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 874 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 875 | 0, /* src_mask */ |
| f5e87a1d | 876 | ONES (64), /* dst_mask */ |
| b34976b6 | 877 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 878 | |
| cedb70c5 | 879 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
880 | HOWTO (R_PPC64_PLT64, /* type */ |
| 881 | 0, /* rightshift */ | |
| 882 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 883 | 64, /* bitsize */ | |
| b34976b6 | 884 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
885 | 0, /* bitpos */ |
| 886 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 887 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 888 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 889 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 890 | 0, /* src_mask */ |
| f5e87a1d | 891 | ONES (64), /* dst_mask */ |
| b34976b6 | 892 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
893 | |
| 894 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 895 | table. */ | |
| 896 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 897 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 898 | 0, /* rightshift */ | |
| 899 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 900 | 64, /* bitsize */ | |
| b34976b6 | 901 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
902 | 0, /* bitpos */ |
| 903 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 904 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 905 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 906 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 907 | 0, /* src_mask */ |
| f5e87a1d | 908 | ONES (64), /* dst_mask */ |
| b34976b6 | 909 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
910 | |
| 911 | /* 16 bit TOC-relative relocation. */ | |
| 912 | ||
| 913 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 914 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 915 | 0, /* rightshift */ | |
| 916 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 917 | 16, /* bitsize */ | |
| b34976b6 | 918 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
919 | 0, /* bitpos */ |
| 920 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 921 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 922 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 923 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
924 | 0, /* src_mask */ |
| 925 | 0xffff, /* dst_mask */ | |
| b34976b6 | 926 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
927 | |
| 928 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 929 | ||
| 930 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 931 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 932 | 0, /* rightshift */ | |
| 933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 934 | 16, /* bitsize */ | |
| b34976b6 | 935 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
936 | 0, /* bitpos */ |
| 937 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 938 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 939 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 940 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
941 | 0, /* src_mask */ |
| 942 | 0xffff, /* dst_mask */ | |
| b34976b6 | 943 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
944 | |
| 945 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 946 | ||
| 947 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 948 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 949 | 16, /* rightshift */ | |
| 950 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 951 | 16, /* bitsize */ | |
| b34976b6 | 952 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
953 | 0, /* bitpos */ |
| 954 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 955 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 956 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 957 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
958 | 0, /* src_mask */ |
| 959 | 0xffff, /* dst_mask */ | |
| b34976b6 | 960 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
961 | |
| 962 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 963 | contents of the low 16 bits, treated as a signed number, is | |
| 964 | negative. */ | |
| 965 | ||
| 966 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 967 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 968 | 16, /* rightshift */ | |
| 969 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 970 | 16, /* bitsize */ | |
| b34976b6 | 971 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
972 | 0, /* bitpos */ |
| 973 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 974 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 975 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 976 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
977 | 0, /* src_mask */ |
| 978 | 0xffff, /* dst_mask */ | |
| b34976b6 | 979 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
980 | |
| 981 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 982 | ||
| 983 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 984 | HOWTO (R_PPC64_TOC, /* type */ | |
| 985 | 0, /* rightshift */ | |
| 986 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 987 | 64, /* bitsize */ | |
| b34976b6 | 988 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
989 | 0, /* bitpos */ |
| 990 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 991 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 992 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 993 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 994 | 0, /* src_mask */ |
| f5e87a1d | 995 | ONES (64), /* dst_mask */ |
| b34976b6 | 996 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
997 | |
| 998 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 999 | value to relocate may (!) refer to a PLT entry which the link | |
| 1000 | editor (a) may replace with the symbol value. If the link editor | |
| 1001 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1002 | entry and store the address to the new PLT entry in the GOT. | |
| 1003 | This permits lazy resolution of function symbols at run time. | |
| 1004 | The link editor may also skip all of this and just (c) emit a | |
| 1005 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1006 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1007 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1008 | 0, /* rightshift */ | |
| 1009 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1010 | 16, /* bitsize */ | |
| b34976b6 | 1011 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1012 | 0, /* bitpos */ |
| 1013 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1014 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1015 | "R_PPC64_PLTGOT16", /* name */ |
| 1016 | FALSE, /* partial_inplace */ | |
| 1017 | 0, /* src_mask */ | |
| 1018 | 0xffff, /* dst_mask */ | |
| 1019 | FALSE), /* pcrel_offset */ | |
| 1020 | ||
| 1021 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1022 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1023 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1024 | 0, /* rightshift */ | |
| 1025 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1026 | 16, /* bitsize */ | |
| 1027 | FALSE, /* pc_relative */ | |
| 1028 | 0, /* bitpos */ | |
| 1029 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1030 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1031 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1032 | FALSE, /* partial_inplace */ | |
| 1033 | 0, /* src_mask */ | |
| 1034 | 0xffff, /* dst_mask */ | |
| 1035 | FALSE), /* pcrel_offset */ | |
| 1036 | ||
| 1037 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1038 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1039 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1040 | 16, /* rightshift */ | |
| 1041 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1042 | 16, /* bitsize */ | |
| 1043 | FALSE, /* pc_relative */ | |
| 1044 | 0, /* bitpos */ | |
| 1045 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1046 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1047 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1048 | FALSE, /* partial_inplace */ | |
| 1049 | 0, /* src_mask */ | |
| 1050 | 0xffff, /* dst_mask */ | |
| 1051 | FALSE), /* pcrel_offset */ | |
| 1052 | ||
| 1053 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1054 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1055 | is negative. */ | |
| 1056 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1057 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1058 | 16, /* rightshift */ | |
| 1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1060 | 16, /* bitsize */ | |
| 1061 | FALSE, /* pc_relative */ | |
| 1062 | 0, /* bitpos */ | |
| 1063 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1064 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1065 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1066 | FALSE, /* partial_inplace */ | |
| 1067 | 0, /* src_mask */ | |
| 1068 | 0xffff, /* dst_mask */ | |
| 1069 | FALSE), /* pcrel_offset */ | |
| 1070 | ||
| 1071 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1072 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1073 | 0, /* rightshift */ | |
| 1074 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1075 | 16, /* bitsize */ | |
| 1076 | FALSE, /* pc_relative */ | |
| 1077 | 0, /* bitpos */ | |
| 1078 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1079 | bfd_elf_generic_reloc, /* special_function */ | |
| 1080 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1081 | FALSE, /* partial_inplace */ | |
| 1082 | 0, /* src_mask */ | |
| 1083 | 0xfffc, /* dst_mask */ | |
| 1084 | FALSE), /* pcrel_offset */ | |
| 1085 | ||
| 1086 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1087 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1088 | 0, /* rightshift */ | |
| 1089 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1090 | 16, /* bitsize */ | |
| 1091 | FALSE, /* pc_relative */ | |
| 1092 | 0, /* bitpos */ | |
| 1093 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1094 | bfd_elf_generic_reloc, /* special_function */ | |
| 1095 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1096 | FALSE, /* partial_inplace */ | |
| 1097 | 0, /* src_mask */ | |
| 1098 | 0xfffc, /* dst_mask */ | |
| 1099 | FALSE), /* pcrel_offset */ | |
| 1100 | ||
| 1101 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1102 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1103 | 0, /* rightshift */ | |
| 1104 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1105 | 16, /* bitsize */ | |
| 1106 | FALSE, /* pc_relative */ | |
| 1107 | 0, /* bitpos */ | |
| 1108 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1109 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1110 | "R_PPC64_GOT16_DS", /* name */ | |
| 1111 | FALSE, /* partial_inplace */ | |
| 1112 | 0, /* src_mask */ | |
| 1113 | 0xfffc, /* dst_mask */ | |
| 1114 | FALSE), /* pcrel_offset */ | |
| 1115 | ||
| 1116 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1117 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1118 | 0, /* rightshift */ | |
| 1119 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1120 | 16, /* bitsize */ | |
| 1121 | FALSE, /* pc_relative */ | |
| 1122 | 0, /* bitpos */ | |
| 1123 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1124 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1125 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1126 | FALSE, /* partial_inplace */ | |
| 1127 | 0, /* src_mask */ | |
| 1128 | 0xfffc, /* dst_mask */ | |
| 1129 | FALSE), /* pcrel_offset */ | |
| 1130 | ||
| 1131 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1132 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1133 | 0, /* rightshift */ | |
| 1134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1135 | 16, /* bitsize */ | |
| 1136 | FALSE, /* pc_relative */ | |
| 1137 | 0, /* bitpos */ | |
| 1138 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1139 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1140 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1141 | FALSE, /* partial_inplace */ | |
| 1142 | 0, /* src_mask */ | |
| 1143 | 0xfffc, /* dst_mask */ | |
| 1144 | FALSE), /* pcrel_offset */ | |
| 1145 | ||
| 1146 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1147 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1148 | 0, /* rightshift */ | |
| 1149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1150 | 16, /* bitsize */ | |
| 1151 | FALSE, /* pc_relative */ | |
| 1152 | 0, /* bitpos */ | |
| 1153 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 1154 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1155 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1156 | FALSE, /* partial_inplace */ | |
| 1157 | 0, /* src_mask */ | |
| 1158 | 0xfffc, /* dst_mask */ | |
| 1159 | FALSE), /* pcrel_offset */ | |
| 1160 | ||
| 1161 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1162 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1163 | 0, /* rightshift */ | |
| 1164 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1165 | 16, /* bitsize */ | |
| 1166 | FALSE, /* pc_relative */ | |
| 1167 | 0, /* bitpos */ | |
| 1168 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1169 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1170 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1171 | FALSE, /* partial_inplace */ | |
| 1172 | 0, /* src_mask */ | |
| 1173 | 0xfffc, /* dst_mask */ | |
| 1174 | FALSE), /* pcrel_offset */ | |
| 1175 | ||
| 1176 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1177 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1178 | 0, /* rightshift */ | |
| 1179 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1180 | 16, /* bitsize */ | |
| 1181 | FALSE, /* pc_relative */ | |
| 1182 | 0, /* bitpos */ | |
| 1183 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1184 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1185 | "R_PPC64_TOC16_DS", /* name */ | |
| 1186 | FALSE, /* partial_inplace */ | |
| 1187 | 0, /* src_mask */ | |
| 1188 | 0xfffc, /* dst_mask */ | |
| 1189 | FALSE), /* pcrel_offset */ | |
| 1190 | ||
| 1191 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1192 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1193 | 0, /* rightshift */ | |
| 1194 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1195 | 16, /* bitsize */ | |
| 1196 | FALSE, /* pc_relative */ | |
| 1197 | 0, /* bitpos */ | |
| 1198 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1199 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1200 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1201 | FALSE, /* partial_inplace */ | |
| 1202 | 0, /* src_mask */ | |
| 1203 | 0xfffc, /* dst_mask */ | |
| 1204 | FALSE), /* pcrel_offset */ | |
| 1205 | ||
| 1206 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1207 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1208 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1209 | 0, /* rightshift */ |
| 1210 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1211 | 16, /* bitsize */ | |
| 1212 | FALSE, /* pc_relative */ | |
| 1213 | 0, /* bitpos */ | |
| 1214 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1215 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1216 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1217 | FALSE, /* partial_inplace */ | |
| 1218 | 0, /* src_mask */ | |
| 1219 | 0xfffc, /* dst_mask */ | |
| 1220 | FALSE), /* pcrel_offset */ | |
| 1221 | ||
| 1222 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1223 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1224 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1225 | 0, /* rightshift */ | |
| 1226 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1227 | 16, /* bitsize */ | |
| 1228 | FALSE, /* pc_relative */ | |
| 1229 | 0, /* bitpos */ | |
| 1230 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1231 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1232 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1233 | FALSE, /* partial_inplace */ | |
| 1234 | 0, /* src_mask */ | |
| 1235 | 0xfffc, /* dst_mask */ | |
| 1236 | FALSE), /* pcrel_offset */ | |
| 1237 | ||
| 727fc41e | 1238 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1239 | HOWTO (R_PPC64_TLS, |
| 1240 | 0, /* rightshift */ | |
| 1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1242 | 32, /* bitsize */ | |
| 1243 | FALSE, /* pc_relative */ | |
| 1244 | 0, /* bitpos */ | |
| 1245 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1246 | bfd_elf_generic_reloc, /* special_function */ | |
| 1247 | "R_PPC64_TLS", /* name */ | |
| 1248 | FALSE, /* partial_inplace */ | |
| 1249 | 0, /* src_mask */ | |
| 1250 | 0, /* dst_mask */ | |
| 1251 | FALSE), /* pcrel_offset */ | |
| 1252 | ||
| 727fc41e AM |
1253 | HOWTO (R_PPC64_TLSGD, |
| 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 | bfd_elf_generic_reloc, /* special_function */ | |
| 1261 | "R_PPC64_TLSGD", /* name */ | |
| 1262 | FALSE, /* partial_inplace */ | |
| 1263 | 0, /* src_mask */ | |
| 1264 | 0, /* dst_mask */ | |
| 1265 | FALSE), /* pcrel_offset */ | |
| 1266 | ||
| 1267 | HOWTO (R_PPC64_TLSLD, | |
| 1268 | 0, /* rightshift */ | |
| 1269 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1270 | 32, /* bitsize */ | |
| 1271 | FALSE, /* pc_relative */ | |
| 1272 | 0, /* bitpos */ | |
| 1273 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1274 | bfd_elf_generic_reloc, /* special_function */ | |
| 1275 | "R_PPC64_TLSLD", /* name */ | |
| 1276 | FALSE, /* partial_inplace */ | |
| 1277 | 0, /* src_mask */ | |
| 1278 | 0, /* dst_mask */ | |
| 1279 | FALSE), /* pcrel_offset */ | |
| 1280 | ||
| 411e1bfb AM |
1281 | /* Computes the load module index of the load module that contains the |
| 1282 | definition of its TLS sym. */ | |
| 1283 | HOWTO (R_PPC64_DTPMOD64, | |
| 1284 | 0, /* rightshift */ | |
| 1285 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1286 | 64, /* bitsize */ | |
| 1287 | FALSE, /* pc_relative */ | |
| 1288 | 0, /* bitpos */ | |
| 1289 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1290 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1291 | "R_PPC64_DTPMOD64", /* name */ | |
| 1292 | FALSE, /* partial_inplace */ | |
| 1293 | 0, /* src_mask */ | |
| 1294 | ONES (64), /* dst_mask */ | |
| 1295 | FALSE), /* pcrel_offset */ | |
| 1296 | ||
| 1297 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1298 | of sym+add and the base address of the thread-local storage block that | |
| 1299 | contains the definition of sym, minus 0x8000. */ | |
| 1300 | HOWTO (R_PPC64_DTPREL64, | |
| 1301 | 0, /* rightshift */ | |
| 1302 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1303 | 64, /* bitsize */ | |
| 1304 | FALSE, /* pc_relative */ | |
| 1305 | 0, /* bitpos */ | |
| 1306 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1307 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1308 | "R_PPC64_DTPREL64", /* name */ | |
| 1309 | FALSE, /* partial_inplace */ | |
| 1310 | 0, /* src_mask */ | |
| 1311 | ONES (64), /* dst_mask */ | |
| 1312 | FALSE), /* pcrel_offset */ | |
| 1313 | ||
| 1314 | /* A 16 bit dtprel reloc. */ | |
| 1315 | HOWTO (R_PPC64_DTPREL16, | |
| 1316 | 0, /* rightshift */ | |
| 1317 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1318 | 16, /* bitsize */ | |
| 1319 | FALSE, /* pc_relative */ | |
| 1320 | 0, /* bitpos */ | |
| 1321 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1322 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1323 | "R_PPC64_DTPREL16", /* name */ | |
| 1324 | FALSE, /* partial_inplace */ | |
| 1325 | 0, /* src_mask */ | |
| 1326 | 0xffff, /* dst_mask */ | |
| 1327 | FALSE), /* pcrel_offset */ | |
| 1328 | ||
| 1329 | /* Like DTPREL16, but no overflow. */ | |
| 1330 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1331 | 0, /* rightshift */ | |
| 1332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1333 | 16, /* bitsize */ | |
| 1334 | FALSE, /* pc_relative */ | |
| 1335 | 0, /* bitpos */ | |
| 1336 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1337 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1338 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1339 | FALSE, /* partial_inplace */ | |
| 1340 | 0, /* src_mask */ | |
| 1341 | 0xffff, /* dst_mask */ | |
| 1342 | FALSE), /* pcrel_offset */ | |
| 1343 | ||
| 1344 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1345 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1346 | 16, /* rightshift */ | |
| 1347 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1348 | 16, /* bitsize */ | |
| 1349 | FALSE, /* pc_relative */ | |
| 1350 | 0, /* bitpos */ | |
| 1351 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1352 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1353 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1354 | FALSE, /* partial_inplace */ | |
| 1355 | 0, /* src_mask */ | |
| 1356 | 0xffff, /* dst_mask */ | |
| 1357 | FALSE), /* pcrel_offset */ | |
| 1358 | ||
| 1359 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1360 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1361 | 16, /* rightshift */ | |
| 1362 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1363 | 16, /* bitsize */ | |
| 1364 | FALSE, /* pc_relative */ | |
| 1365 | 0, /* bitpos */ | |
| 1366 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1367 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1368 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1369 | FALSE, /* partial_inplace */ | |
| 1370 | 0, /* src_mask */ | |
| 1371 | 0xffff, /* dst_mask */ | |
| 1372 | FALSE), /* pcrel_offset */ | |
| 1373 | ||
| 1374 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1375 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1376 | 32, /* rightshift */ | |
| 1377 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1378 | 16, /* bitsize */ | |
| 1379 | FALSE, /* pc_relative */ | |
| 1380 | 0, /* bitpos */ | |
| 1381 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1382 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1383 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1384 | FALSE, /* partial_inplace */ | |
| 1385 | 0, /* src_mask */ | |
| 1386 | 0xffff, /* dst_mask */ | |
| 1387 | FALSE), /* pcrel_offset */ | |
| 1388 | ||
| 1389 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1390 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1391 | 32, /* rightshift */ | |
| 1392 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1393 | 16, /* bitsize */ | |
| 1394 | FALSE, /* pc_relative */ | |
| 1395 | 0, /* bitpos */ | |
| 1396 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1397 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1398 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1399 | FALSE, /* partial_inplace */ | |
| 1400 | 0, /* src_mask */ | |
| 1401 | 0xffff, /* dst_mask */ | |
| 1402 | FALSE), /* pcrel_offset */ | |
| 1403 | ||
| 1404 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1405 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1406 | 48, /* rightshift */ | |
| 1407 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1408 | 16, /* bitsize */ | |
| 1409 | FALSE, /* pc_relative */ | |
| 1410 | 0, /* bitpos */ | |
| 1411 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1412 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1413 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1414 | FALSE, /* partial_inplace */ | |
| 1415 | 0, /* src_mask */ | |
| 1416 | 0xffff, /* dst_mask */ | |
| 1417 | FALSE), /* pcrel_offset */ | |
| 1418 | ||
| 1419 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1420 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1421 | 48, /* rightshift */ | |
| 1422 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1423 | 16, /* bitsize */ | |
| 1424 | FALSE, /* pc_relative */ | |
| 1425 | 0, /* bitpos */ | |
| 1426 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1427 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1428 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1429 | FALSE, /* partial_inplace */ | |
| 1430 | 0, /* src_mask */ | |
| 1431 | 0xffff, /* dst_mask */ | |
| 1432 | FALSE), /* pcrel_offset */ | |
| 1433 | ||
| 1434 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1435 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1436 | 0, /* rightshift */ | |
| 1437 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1438 | 16, /* bitsize */ | |
| 1439 | FALSE, /* pc_relative */ | |
| 1440 | 0, /* bitpos */ | |
| 1441 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1442 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1443 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1444 | FALSE, /* partial_inplace */ | |
| 1445 | 0, /* src_mask */ | |
| 1446 | 0xfffc, /* dst_mask */ | |
| 1447 | FALSE), /* pcrel_offset */ | |
| 1448 | ||
| 1449 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1450 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1451 | 0, /* rightshift */ | |
| 1452 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1453 | 16, /* bitsize */ | |
| 1454 | FALSE, /* pc_relative */ | |
| 1455 | 0, /* bitpos */ | |
| 1456 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1457 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1458 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1459 | FALSE, /* partial_inplace */ | |
| 1460 | 0, /* src_mask */ | |
| 1461 | 0xfffc, /* dst_mask */ | |
| 1462 | FALSE), /* pcrel_offset */ | |
| 1463 | ||
| 1464 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1465 | sym+add and the value of the thread pointer (r13). */ | |
| 1466 | HOWTO (R_PPC64_TPREL64, | |
| 1467 | 0, /* rightshift */ | |
| 1468 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1469 | 64, /* bitsize */ | |
| 1470 | FALSE, /* pc_relative */ | |
| 1471 | 0, /* bitpos */ | |
| 1472 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1473 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1474 | "R_PPC64_TPREL64", /* name */ | |
| 1475 | FALSE, /* partial_inplace */ | |
| 1476 | 0, /* src_mask */ | |
| 1477 | ONES (64), /* dst_mask */ | |
| 1478 | FALSE), /* pcrel_offset */ | |
| 1479 | ||
| 1480 | /* A 16 bit tprel reloc. */ | |
| 1481 | HOWTO (R_PPC64_TPREL16, | |
| 1482 | 0, /* rightshift */ | |
| 1483 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1484 | 16, /* bitsize */ | |
| 1485 | FALSE, /* pc_relative */ | |
| 1486 | 0, /* bitpos */ | |
| 1487 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1488 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1489 | "R_PPC64_TPREL16", /* name */ | |
| 1490 | FALSE, /* partial_inplace */ | |
| 1491 | 0, /* src_mask */ | |
| 1492 | 0xffff, /* dst_mask */ | |
| 1493 | FALSE), /* pcrel_offset */ | |
| 1494 | ||
| 1495 | /* Like TPREL16, but no overflow. */ | |
| 1496 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1497 | 0, /* rightshift */ | |
| 1498 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1499 | 16, /* bitsize */ | |
| 1500 | FALSE, /* pc_relative */ | |
| 1501 | 0, /* bitpos */ | |
| 1502 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1503 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1504 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1505 | FALSE, /* partial_inplace */ | |
| 1506 | 0, /* src_mask */ | |
| 1507 | 0xffff, /* dst_mask */ | |
| 1508 | FALSE), /* pcrel_offset */ | |
| 1509 | ||
| 1510 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1511 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1512 | 16, /* rightshift */ | |
| 1513 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1514 | 16, /* bitsize */ | |
| 1515 | FALSE, /* pc_relative */ | |
| 1516 | 0, /* bitpos */ | |
| 1517 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1518 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1519 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1520 | FALSE, /* partial_inplace */ | |
| 1521 | 0, /* src_mask */ | |
| 1522 | 0xffff, /* dst_mask */ | |
| 1523 | FALSE), /* pcrel_offset */ | |
| 1524 | ||
| 1525 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1526 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1527 | 16, /* 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 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1534 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1535 | FALSE, /* partial_inplace */ | |
| 1536 | 0, /* src_mask */ | |
| 1537 | 0xffff, /* dst_mask */ | |
| 1538 | FALSE), /* pcrel_offset */ | |
| 1539 | ||
| 1540 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1541 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1542 | 32, /* rightshift */ | |
| 1543 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1544 | 16, /* bitsize */ | |
| 1545 | FALSE, /* pc_relative */ | |
| 1546 | 0, /* bitpos */ | |
| 1547 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1548 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1549 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1550 | FALSE, /* partial_inplace */ | |
| 1551 | 0, /* src_mask */ | |
| 1552 | 0xffff, /* dst_mask */ | |
| 1553 | FALSE), /* pcrel_offset */ | |
| 1554 | ||
| 1555 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1556 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1557 | 32, /* rightshift */ | |
| 1558 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1559 | 16, /* bitsize */ | |
| 1560 | FALSE, /* pc_relative */ | |
| 1561 | 0, /* bitpos */ | |
| 1562 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1563 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1564 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1565 | FALSE, /* partial_inplace */ | |
| 1566 | 0, /* src_mask */ | |
| 1567 | 0xffff, /* dst_mask */ | |
| 1568 | FALSE), /* pcrel_offset */ | |
| 1569 | ||
| 1570 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1571 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1572 | 48, /* rightshift */ | |
| 1573 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1574 | 16, /* bitsize */ | |
| 1575 | FALSE, /* pc_relative */ | |
| 1576 | 0, /* bitpos */ | |
| 1577 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1578 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1579 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1580 | FALSE, /* partial_inplace */ | |
| 1581 | 0, /* src_mask */ | |
| 1582 | 0xffff, /* dst_mask */ | |
| 1583 | FALSE), /* pcrel_offset */ | |
| 1584 | ||
| 1585 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1586 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1587 | 48, /* rightshift */ | |
| 1588 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1589 | 16, /* bitsize */ | |
| 1590 | FALSE, /* pc_relative */ | |
| 1591 | 0, /* bitpos */ | |
| 1592 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1593 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1594 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1595 | FALSE, /* partial_inplace */ | |
| 1596 | 0, /* src_mask */ | |
| 1597 | 0xffff, /* dst_mask */ | |
| 1598 | FALSE), /* pcrel_offset */ | |
| 1599 | ||
| 1600 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1601 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1602 | 0, /* rightshift */ | |
| 1603 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1604 | 16, /* bitsize */ | |
| 1605 | FALSE, /* pc_relative */ | |
| 1606 | 0, /* bitpos */ | |
| 1607 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1608 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1609 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1610 | FALSE, /* partial_inplace */ | |
| 1611 | 0, /* src_mask */ | |
| 1612 | 0xfffc, /* dst_mask */ | |
| 1613 | FALSE), /* pcrel_offset */ | |
| 1614 | ||
| 1615 | /* Like TPREL16_DS, but no overflow. */ | |
| 1616 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1617 | 0, /* rightshift */ | |
| 1618 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1619 | 16, /* bitsize */ | |
| 1620 | FALSE, /* pc_relative */ | |
| 1621 | 0, /* bitpos */ | |
| 1622 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1623 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1624 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1625 | FALSE, /* partial_inplace */ | |
| 1626 | 0, /* src_mask */ | |
| 1627 | 0xfffc, /* dst_mask */ | |
| 1628 | FALSE), /* pcrel_offset */ | |
| 1629 | ||
| 1630 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1631 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1632 | to the first entry relative to the TOC base (r2). */ | |
| 1633 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1634 | 0, /* rightshift */ | |
| 1635 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1636 | 16, /* bitsize */ | |
| 1637 | FALSE, /* pc_relative */ | |
| 1638 | 0, /* bitpos */ | |
| 1639 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1640 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1641 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1642 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1643 | 0, /* src_mask */ |
| 1644 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1645 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1646 | |
| 411e1bfb AM |
1647 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1648 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1649 | 0, /* rightshift */ |
| 1650 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1651 | 16, /* bitsize */ | |
| b34976b6 | 1652 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1653 | 0, /* bitpos */ |
| 1654 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1655 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1656 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1657 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1658 | 0, /* src_mask */ |
| 1659 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1660 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1661 | |
| 411e1bfb AM |
1662 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1663 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1664 | 16, /* rightshift */ |
| 1665 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1666 | 16, /* bitsize */ | |
| b34976b6 | 1667 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1668 | 0, /* bitpos */ |
| 1669 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1670 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1671 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1672 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1673 | 0, /* src_mask */ |
| 1674 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1675 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1676 | |
| 411e1bfb AM |
1677 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1678 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1679 | 16, /* rightshift */ |
| 1680 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1681 | 16, /* bitsize */ | |
| b34976b6 | 1682 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1683 | 0, /* bitpos */ |
| 411e1bfb | 1684 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1685 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1686 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1687 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1688 | 0, /* src_mask */ |
| 1689 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1690 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1691 | |
| 411e1bfb AM |
1692 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1693 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1694 | first entry relative to the TOC base (r2). */ | |
| 1695 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1696 | 0, /* rightshift */ |
| 1697 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1698 | 16, /* bitsize */ | |
| b34976b6 | 1699 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1700 | 0, /* bitpos */ |
| 411e1bfb AM |
1701 | complain_overflow_signed, /* complain_on_overflow */ |
| 1702 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1703 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1704 | FALSE, /* partial_inplace */ |
| d006db6c | 1705 | 0, /* src_mask */ |
| 411e1bfb | 1706 | 0xffff, /* dst_mask */ |
| b34976b6 | 1707 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1708 | |
| 411e1bfb AM |
1709 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1710 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1711 | 0, /* rightshift */ |
| 1712 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1713 | 16, /* bitsize */ | |
| b34976b6 | 1714 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1715 | 0, /* bitpos */ |
| 411e1bfb AM |
1716 | complain_overflow_dont, /* complain_on_overflow */ |
| 1717 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1718 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1719 | FALSE, /* partial_inplace */ |
| d006db6c | 1720 | 0, /* src_mask */ |
| 411e1bfb | 1721 | 0xffff, /* dst_mask */ |
| b34976b6 | 1722 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1723 | |
| 411e1bfb AM |
1724 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1725 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1726 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1728 | 16, /* bitsize */ | |
| b34976b6 | 1729 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1730 | 0, /* bitpos */ |
| 411e1bfb | 1731 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1732 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1733 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1734 | FALSE, /* partial_inplace */ |
| d006db6c | 1735 | 0, /* src_mask */ |
| 411e1bfb | 1736 | 0xffff, /* dst_mask */ |
| b34976b6 | 1737 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1738 | |
| 411e1bfb AM |
1739 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1740 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1741 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1742 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1743 | 16, /* bitsize */ | |
| b34976b6 | 1744 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1745 | 0, /* bitpos */ |
| 1746 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1747 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1748 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1749 | FALSE, /* partial_inplace */ |
| d006db6c | 1750 | 0, /* src_mask */ |
| 411e1bfb | 1751 | 0xffff, /* dst_mask */ |
| b34976b6 | 1752 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1753 | |
| 411e1bfb AM |
1754 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1755 | the offset to the entry relative to the TOC base (r2). */ | |
| 1756 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1757 | 0, /* rightshift */ |
| 1758 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1759 | 16, /* bitsize */ | |
| b34976b6 | 1760 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1761 | 0, /* bitpos */ |
| 411e1bfb | 1762 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1763 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1764 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1765 | FALSE, /* partial_inplace */ |
| d006db6c | 1766 | 0, /* src_mask */ |
| 5bd4f169 | 1767 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1768 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1769 | |
| 411e1bfb AM |
1770 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1771 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1772 | 0, /* rightshift */ |
| c061c2d8 AM |
1773 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1774 | 16, /* bitsize */ | |
| b34976b6 | 1775 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1776 | 0, /* bitpos */ |
| 411e1bfb AM |
1777 | complain_overflow_dont, /* complain_on_overflow */ |
| 1778 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1779 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1780 | FALSE, /* partial_inplace */ |
| d006db6c | 1781 | 0, /* src_mask */ |
| c061c2d8 | 1782 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1783 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1784 | |
| 411e1bfb AM |
1785 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1786 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1787 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1788 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1789 | 16, /* bitsize */ | |
| b34976b6 | 1790 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1791 | 0, /* bitpos */ |
| 1792 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1793 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1794 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1795 | FALSE, /* partial_inplace */ |
| d006db6c | 1796 | 0, /* src_mask */ |
| 411e1bfb | 1797 | 0xffff, /* dst_mask */ |
| b34976b6 | 1798 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1799 | |
| 411e1bfb AM |
1800 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1801 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1802 | 16, /* rightshift */ | |
| 1803 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1804 | 16, /* bitsize */ | |
| 1805 | FALSE, /* pc_relative */ | |
| 1806 | 0, /* bitpos */ | |
| 1807 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1808 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1809 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1810 | FALSE, /* partial_inplace */ | |
| 1811 | 0, /* src_mask */ | |
| 1812 | 0xffff, /* dst_mask */ | |
| 1813 | FALSE), /* pcrel_offset */ | |
| 1814 | ||
| 1815 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1816 | offset to the entry relative to the TOC base (r2). */ | |
| 1817 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1818 | 0, /* rightshift */ |
| 1819 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1820 | 16, /* bitsize */ | |
| b34976b6 | 1821 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1822 | 0, /* bitpos */ |
| 1823 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1824 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1825 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1826 | FALSE, /* partial_inplace */ |
| d006db6c | 1827 | 0, /* src_mask */ |
| ad8e1ba5 | 1828 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1829 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1830 | |
| 411e1bfb AM |
1831 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1832 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1833 | 0, /* rightshift */ |
| 1834 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1835 | 16, /* bitsize */ | |
| b34976b6 | 1836 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1837 | 0, /* bitpos */ |
| 1838 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1839 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1840 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1841 | FALSE, /* partial_inplace */ |
| d006db6c | 1842 | 0, /* src_mask */ |
| ad8e1ba5 | 1843 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1844 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1845 | |
| 411e1bfb AM |
1846 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1847 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1848 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1849 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1850 | 16, /* bitsize */ | |
| b34976b6 | 1851 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1852 | 0, /* bitpos */ |
| 411e1bfb | 1853 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1854 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1855 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1856 | FALSE, /* partial_inplace */ |
| d006db6c | 1857 | 0, /* src_mask */ |
| 411e1bfb | 1858 | 0xffff, /* dst_mask */ |
| b34976b6 | 1859 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1860 | |
| 411e1bfb AM |
1861 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1862 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1863 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1864 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1865 | 16, /* bitsize */ | |
| b34976b6 | 1866 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1867 | 0, /* bitpos */ |
| 1868 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1869 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1870 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1871 | FALSE, /* partial_inplace */ |
| d006db6c | 1872 | 0, /* src_mask */ |
| 411e1bfb | 1873 | 0xffff, /* dst_mask */ |
| b34976b6 | 1874 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1875 | |
| 1876 | /* GNU extension to record C++ vtable hierarchy. */ | |
| 1877 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 1878 | 0, /* rightshift */ | |
| 1879 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1880 | 0, /* bitsize */ | |
| b34976b6 | 1881 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1882 | 0, /* bitpos */ |
| 1883 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1884 | NULL, /* special_function */ | |
| 1885 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 1886 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1887 | 0, /* src_mask */ |
| 1888 | 0, /* dst_mask */ | |
| b34976b6 | 1889 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1890 | |
| 1891 | /* GNU extension to record C++ vtable member usage. */ | |
| 1892 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 1893 | 0, /* rightshift */ | |
| 1894 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1895 | 0, /* bitsize */ | |
| b34976b6 | 1896 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1897 | 0, /* bitpos */ |
| 1898 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1899 | NULL, /* special_function */ | |
| 1900 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 1901 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1902 | 0, /* src_mask */ |
| 1903 | 0, /* dst_mask */ | |
| b34976b6 | 1904 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1905 | }; |
| 1906 | ||
| 1907 | \f | |
| 1908 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 1909 | be done. */ | |
| 1910 | ||
| 1911 | static void | |
| 4ce794b7 | 1912 | ppc_howto_init (void) |
| 5bd4f169 AM |
1913 | { |
| 1914 | unsigned int i, type; | |
| 1915 | ||
| 1916 | for (i = 0; | |
| 1917 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 1918 | i++) | |
| 1919 | { | |
| 1920 | type = ppc64_elf_howto_raw[i].type; | |
| 1921 | BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table) | |
| 1922 | / sizeof (ppc64_elf_howto_table[0]))); | |
| 1923 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; | |
| 1924 | } | |
| 1925 | } | |
| 1926 | ||
| 1927 | static reloc_howto_type * | |
| 4ce794b7 AM |
1928 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1929 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 1930 | { |
| 411e1bfb | 1931 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
1932 | |
| 1933 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 1934 | /* Initialize howto table if needed. */ | |
| 1935 | ppc_howto_init (); | |
| 1936 | ||
| 4ce794b7 | 1937 | switch (code) |
| 5bd4f169 AM |
1938 | { |
| 1939 | default: | |
| 4ce794b7 | 1940 | return NULL; |
| 5bd4f169 | 1941 | |
| 411e1bfb AM |
1942 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 1943 | break; | |
| 1944 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 1945 | break; | |
| 1946 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 1947 | break; | |
| 1948 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 1949 | break; | |
| 1950 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 1951 | break; | |
| 1952 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 1953 | break; | |
| 1954 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; | |
| 5bd4f169 | 1955 | break; |
| 411e1bfb | 1956 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 1957 | break; |
| 411e1bfb | 1958 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 1959 | break; |
| 411e1bfb | 1960 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 1961 | break; |
| 411e1bfb | 1962 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 1963 | break; |
| 411e1bfb | 1964 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 1965 | break; |
| 411e1bfb | 1966 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 1967 | break; |
| 411e1bfb | 1968 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 1969 | break; |
| 411e1bfb | 1970 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 1971 | break; |
| 411e1bfb | 1972 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 1973 | break; |
| 411e1bfb | 1974 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 1975 | break; |
| 411e1bfb | 1976 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 1977 | break; |
| 411e1bfb | 1978 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 1979 | break; |
| 411e1bfb | 1980 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 1981 | break; |
| 411e1bfb | 1982 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 1983 | break; |
| 411e1bfb | 1984 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 1985 | break; |
| 411e1bfb | 1986 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 1987 | break; |
| 411e1bfb | 1988 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 1989 | break; |
| 411e1bfb | 1990 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 1991 | break; |
| 411e1bfb | 1992 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 1993 | break; |
| 411e1bfb | 1994 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 1995 | break; |
| 411e1bfb | 1996 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 1997 | break; |
| 411e1bfb | 1998 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 1999 | break; |
| 411e1bfb | 2000 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2001 | break; |
| 411e1bfb | 2002 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2003 | break; |
| 411e1bfb | 2004 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2005 | break; |
| 411e1bfb | 2006 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2007 | break; |
| 411e1bfb | 2008 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2009 | break; |
| 411e1bfb | 2010 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2011 | break; |
| 411e1bfb | 2012 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2013 | break; |
| 411e1bfb | 2014 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2015 | break; |
| 411e1bfb | 2016 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2017 | break; |
| 411e1bfb | 2018 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2019 | break; |
| 411e1bfb | 2020 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2021 | break; |
| 411e1bfb | 2022 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2023 | break; |
| 411e1bfb | 2024 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2025 | break; |
| 411e1bfb | 2026 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2027 | break; |
| 411e1bfb | 2028 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2029 | break; |
| 411e1bfb | 2030 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2031 | break; |
| 411e1bfb | 2032 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2033 | break; |
| 411e1bfb | 2034 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2035 | break; |
| 411e1bfb | 2036 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2037 | break; |
| 411e1bfb | 2038 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2039 | break; |
| 411e1bfb | 2040 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2041 | break; |
| 411e1bfb | 2042 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2043 | break; |
| 411e1bfb | 2044 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2045 | break; |
| 411e1bfb | 2046 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2047 | break; |
| 411e1bfb | 2048 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2049 | break; |
| 411e1bfb | 2050 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2051 | break; |
| 411e1bfb | 2052 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2053 | break; |
| 411e1bfb | 2054 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2055 | break; |
| 411e1bfb | 2056 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2057 | break; |
| 411e1bfb | 2058 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2059 | break; |
| 411e1bfb | 2060 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2061 | break; |
| 727fc41e AM |
2062 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2063 | break; | |
| 2064 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2065 | break; | |
| 411e1bfb | 2066 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2067 | break; |
| 411e1bfb | 2068 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2069 | break; |
| 411e1bfb | 2070 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2071 | break; |
| 411e1bfb | 2072 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2073 | break; |
| 411e1bfb | 2074 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2075 | break; |
| 411e1bfb | 2076 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2077 | break; |
| 411e1bfb AM |
2078 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2079 | break; | |
| 2080 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2081 | break; | |
| 2082 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2083 | break; | |
| 2084 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; | |
| 2085 | break; | |
| 2086 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; | |
| 2087 | break; | |
| 2088 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2089 | break; | |
| 2090 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2091 | break; | |
| 2092 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2093 | break; | |
| 2094 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2095 | break; | |
| 2096 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2097 | break; | |
| 2098 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2099 | break; | |
| 2100 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2101 | break; | |
| 2102 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2103 | break; | |
| 2104 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2105 | break; | |
| 2106 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2107 | break; | |
| 2108 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2109 | break; | |
| 2110 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2111 | break; | |
| 2112 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2113 | break; | |
| 2114 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2115 | break; | |
| 2116 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2117 | break; | |
| 2118 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2119 | break; | |
| 2120 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2121 | break; | |
| 2122 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2123 | break; | |
| 2124 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2125 | break; | |
| 2126 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2127 | break; | |
| 2128 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2129 | break; | |
| 2130 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2131 | break; | |
| 2132 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2133 | break; | |
| 2134 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2135 | break; | |
| 2136 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2137 | break; | |
| 2138 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2139 | break; | |
| 2140 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2141 | break; | |
| 2142 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2143 | break; | |
| 2144 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; | |
| 2145 | break; | |
| 2146 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2147 | break; |
| 2148 | } | |
| 2149 | ||
| 4ce794b7 | 2150 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2151 | }; |
| 2152 | ||
| 157090f7 AM |
2153 | static reloc_howto_type * |
| 2154 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2155 | const char *r_name) | |
| 2156 | { | |
| 2157 | unsigned int i; | |
| 2158 | ||
| 2159 | for (i = 0; | |
| 2160 | i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]); | |
| 2161 | i++) | |
| 2162 | if (ppc64_elf_howto_raw[i].name != NULL | |
| 2163 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2164 | return &ppc64_elf_howto_raw[i]; | |
| 2165 | ||
| 2166 | return NULL; | |
| 2167 | } | |
| 2168 | ||
| 5bd4f169 AM |
2169 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2170 | ||
| 2171 | static void | |
| 4ce794b7 AM |
2172 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2173 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2174 | { |
| 65f38f15 AM |
2175 | unsigned int type; |
| 2176 | ||
| ef60b7ff | 2177 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2178 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2179 | ppc_howto_init (); |
| 2180 | ||
| 65f38f15 | 2181 | type = ELF64_R_TYPE (dst->r_info); |
| d0fb9a8d JJ |
2182 | if (type >= (sizeof (ppc64_elf_howto_table) |
| 2183 | / sizeof (ppc64_elf_howto_table[0]))) | |
| 2184 | { | |
| 2185 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2186 | abfd, (int) type); |
| 2187 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2188 | } |
| 65f38f15 | 2189 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2190 | } |
| 2191 | ||
| 04c9666a | 2192 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2193 | |
| 2194 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2195 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2196 | void *data, asection *input_section, | |
| 2197 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2198 | { |
| 805fc799 AM |
2199 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2200 | call the generic function. Any adjustment will be done at final | |
| 2201 | link time. */ | |
| 2202 | if (output_bfd != NULL) | |
| cedb70c5 | 2203 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2204 | input_section, output_bfd, error_message); |
| 2205 | ||
| 2206 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2207 | We won't actually be using the low 16 bits, so trashing them | |
| 2208 | doesn't matter. */ | |
| 2209 | reloc_entry->addend += 0x8000; | |
| 2210 | return bfd_reloc_continue; | |
| 2211 | } | |
| 5bd4f169 | 2212 | |
| 2441e016 AM |
2213 | static bfd_reloc_status_type |
| 2214 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2215 | void *data, asection *input_section, | |
| 2216 | bfd *output_bfd, char **error_message) | |
| 2217 | { | |
| 2218 | if (output_bfd != NULL) | |
| 2219 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2220 | input_section, output_bfd, error_message); | |
| 2221 | ||
| 699733f6 AM |
2222 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2223 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2224 | { |
| 2225 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2226 | symbol->value + reloc_entry->addend, | |
| 2227 | NULL, NULL); | |
| 2228 | if (dest != (bfd_vma) -1) | |
| 2229 | reloc_entry->addend = dest - (symbol->value | |
| 2230 | + symbol->section->output_section->vma | |
| 2231 | + symbol->section->output_offset); | |
| 2232 | } | |
| 2233 | return bfd_reloc_continue; | |
| 2234 | } | |
| 2235 | ||
| 805fc799 | 2236 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2237 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2238 | void *data, asection *input_section, | |
| 2239 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2240 | { |
| 2241 | long insn; | |
| 04c9666a | 2242 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 AM |
2243 | bfd_size_type octets; |
| 2244 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ | |
| b34976b6 | 2245 | bfd_boolean is_power4 = FALSE; |
| 805fc799 AM |
2246 | |
| 2247 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2248 | call the generic function. Any adjustment will be done at final | |
| 2249 | link time. */ | |
| 5bd4f169 | 2250 | if (output_bfd != NULL) |
| cedb70c5 | 2251 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2252 | input_section, output_bfd, error_message); |
| 2253 | ||
| 2254 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2255 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2256 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2257 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2258 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2259 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2260 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 AM |
2261 | |
| 2262 | if (is_power4) | |
| 5bd4f169 | 2263 | { |
| 805fc799 AM |
2264 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2265 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2266 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2267 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2268 | insn |= 0x02 << 21; | |
| 2269 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2270 | insn |= 0x08 << 21; | |
| 2271 | else | |
| 2441e016 | 2272 | goto out; |
| 5bd4f169 | 2273 | } |
| 805fc799 AM |
2274 | else |
| 2275 | { | |
| 2276 | bfd_vma target = 0; | |
| 2277 | bfd_vma from; | |
| 5bd4f169 | 2278 | |
| 805fc799 AM |
2279 | if (!bfd_is_com_section (symbol->section)) |
| 2280 | target = symbol->value; | |
| 2281 | target += symbol->section->output_section->vma; | |
| 2282 | target += symbol->section->output_offset; | |
| 2283 | target += reloc_entry->addend; | |
| 5bd4f169 | 2284 | |
| 805fc799 AM |
2285 | from = (reloc_entry->address |
| 2286 | + input_section->output_offset | |
| 2287 | + input_section->output_section->vma); | |
| 5bd4f169 | 2288 | |
| 805fc799 AM |
2289 | /* Invert 'y' bit if not the default. */ |
| 2290 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2291 | insn ^= 0x01 << 21; | |
| 2292 | } | |
| 4ce794b7 | 2293 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2294 | out: |
| 2295 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2296 | input_section, output_bfd, error_message); | |
| 805fc799 | 2297 | } |
| 5bd4f169 | 2298 | |
| 805fc799 | 2299 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2300 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2301 | void *data, asection *input_section, | |
| 2302 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2303 | { |
| 2304 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2305 | call the generic function. Any adjustment will be done at final | |
| 2306 | link time. */ | |
| 2307 | if (output_bfd != NULL) | |
| cedb70c5 | 2308 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2309 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2310 | |
| 805fc799 AM |
2311 | /* Subtract the symbol section base address. */ |
| 2312 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2313 | return bfd_reloc_continue; |
| 2314 | } | |
| 2315 | ||
| 805fc799 | 2316 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2317 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2318 | void *data, asection *input_section, | |
| 2319 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2320 | { |
| 2321 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2322 | call the generic function. Any adjustment will be done at final | |
| 2323 | link time. */ | |
| 2324 | if (output_bfd != NULL) | |
| cedb70c5 | 2325 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2326 | input_section, output_bfd, error_message); |
| 2327 | ||
| 2328 | /* Subtract the symbol section base address. */ | |
| 2329 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2330 | ||
| 2331 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2332 | reloc_entry->addend += 0x8000; | |
| 2333 | return bfd_reloc_continue; | |
| 2334 | } | |
| 2335 | ||
| 2336 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2337 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2338 | void *data, asection *input_section, | |
| 2339 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2340 | { |
| 2341 | bfd_vma TOCstart; | |
| 2342 | ||
| 2343 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2344 | call the generic function. Any adjustment will be done at final | |
| 2345 | link time. */ | |
| 2346 | if (output_bfd != NULL) | |
| cedb70c5 | 2347 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2348 | input_section, output_bfd, error_message); |
| 2349 | ||
| 2350 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2351 | if (TOCstart == 0) | |
| 2352 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2353 | ||
| 2354 | /* Subtract the TOC base address. */ | |
| 2355 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2356 | return bfd_reloc_continue; | |
| 2357 | } | |
| 2358 | ||
| 2359 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2360 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2361 | void *data, asection *input_section, | |
| 2362 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2363 | { |
| 2364 | bfd_vma TOCstart; | |
| 2365 | ||
| 2366 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2367 | call the generic function. Any adjustment will be done at final | |
| 2368 | link time. */ | |
| 2369 | if (output_bfd != NULL) | |
| cedb70c5 | 2370 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2371 | input_section, output_bfd, error_message); |
| 2372 | ||
| 2373 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2374 | if (TOCstart == 0) | |
| 2375 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2376 | ||
| 2377 | /* Subtract the TOC base address. */ | |
| 2378 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2379 | ||
| 2380 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2381 | reloc_entry->addend += 0x8000; | |
| 2382 | return bfd_reloc_continue; | |
| 2383 | } | |
| 2384 | ||
| 2385 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2386 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2387 | void *data, asection *input_section, | |
| 2388 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2389 | { |
| 2390 | bfd_vma TOCstart; | |
| 2391 | bfd_size_type octets; | |
| 2392 | ||
| 2393 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2394 | call the generic function. Any adjustment will be done at final | |
| 2395 | link time. */ | |
| 2396 | if (output_bfd != NULL) | |
| cedb70c5 | 2397 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2398 | input_section, output_bfd, error_message); |
| 2399 | ||
| 2400 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2401 | if (TOCstart == 0) | |
| 2402 | TOCstart = ppc64_elf_toc (input_section->output_section->owner); | |
| 2403 | ||
| 2404 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2405 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2406 | return bfd_reloc_ok; | |
| 2407 | } | |
| 2408 | ||
| 2409 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2410 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2411 | void *data, asection *input_section, | |
| 2412 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2413 | { |
| 2414 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2415 | call the generic function. Any adjustment will be done at final | |
| 2416 | link time. */ | |
| 2417 | if (output_bfd != NULL) | |
| cedb70c5 | 2418 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2419 | input_section, output_bfd, error_message); |
| 2420 | ||
| 2421 | if (error_message != NULL) | |
| 2422 | { | |
| 2423 | static char buf[60]; | |
| 2424 | sprintf (buf, "generic linker can't handle %s", | |
| 2425 | reloc_entry->howto->name); | |
| 2426 | *error_message = buf; | |
| 2427 | } | |
| 2428 | return bfd_reloc_dangerous; | |
| 2429 | } | |
| 2430 | ||
| e717da7e AM |
2431 | struct ppc64_elf_obj_tdata |
| 2432 | { | |
| 2433 | struct elf_obj_tdata elf; | |
| 2434 | ||
| 2435 | /* Shortcuts to dynamic linker sections. */ | |
| 2436 | asection *got; | |
| 2437 | asection *relgot; | |
| 2438 | ||
| b3fac117 AM |
2439 | /* Used during garbage collection. We attach global symbols defined |
| 2440 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2441 | asection *deleted_section; | |
| 81688140 | 2442 | |
| e717da7e AM |
2443 | /* TLS local dynamic got entry handling. Suppose for multiple GOT |
| 2444 | sections means we potentially need one of these for each input bfd. */ | |
| 2445 | union { | |
| 2446 | bfd_signed_vma refcount; | |
| 2447 | bfd_vma offset; | |
| 2448 | } tlsld_got; | |
| 8860955f AM |
2449 | |
| 2450 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2451 | Elf_Internal_Rela *opd_relocs; | |
| e717da7e AM |
2452 | }; |
| 2453 | ||
| 2454 | #define ppc64_elf_tdata(bfd) \ | |
| 2455 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2456 | ||
| 2457 | #define ppc64_tlsld_got(bfd) \ | |
| 2458 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2459 | ||
| 0c8d6e5c AM |
2460 | #define is_ppc64_elf(bfd) \ |
| 2461 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 2462 | && elf_object_id (bfd) == PPC64_ELF_TDATA) | |
| 2463 | ||
| e717da7e AM |
2464 | /* Override the generic function because we store some extras. */ |
| 2465 | ||
| 2466 | static bfd_boolean | |
| 2467 | ppc64_elf_mkobject (bfd *abfd) | |
| 2468 | { | |
| 0ffa91dd NC |
2469 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 2470 | PPC64_ELF_TDATA); | |
| e717da7e AM |
2471 | } |
| 2472 | ||
| feee612b AM |
2473 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2474 | default is 32 bit. */ | |
| 2475 | ||
| b34976b6 | 2476 | static bfd_boolean |
| 4ce794b7 | 2477 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2478 | { |
| 2479 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2480 | { | |
| 2481 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2482 | ||
| 2483 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2484 | { | |
| 2485 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2486 | abfd->arch_info = abfd->arch_info->next; | |
| 2487 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2488 | } | |
| 2489 | } | |
| b34976b6 | 2490 | return TRUE; |
| feee612b AM |
2491 | } |
| 2492 | ||
| d37c89e5 AM |
2493 | /* Support for core dump NOTE sections. */ |
| 2494 | ||
| 2495 | static bfd_boolean | |
| 2496 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2497 | { | |
| eea6121a | 2498 | size_t offset, size; |
| d37c89e5 AM |
2499 | |
| 2500 | if (note->descsz != 504) | |
| 2501 | return FALSE; | |
| 2502 | ||
| 2503 | /* pr_cursig */ | |
| 2504 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); | |
| 2505 | ||
| 2506 | /* pr_pid */ | |
| 2507 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32); | |
| 2508 | ||
| 2509 | /* pr_reg */ | |
| 2510 | offset = 112; | |
| eea6121a | 2511 | size = 384; |
| d37c89e5 AM |
2512 | |
| 2513 | /* Make a ".reg/999" section. */ | |
| 2514 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2515 | size, note->descpos + offset); |
| d37c89e5 AM |
2516 | } |
| 2517 | ||
| 2518 | static bfd_boolean | |
| 2519 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2520 | { | |
| 2521 | if (note->descsz != 136) | |
| 2522 | return FALSE; | |
| 2523 | ||
| 2524 | elf_tdata (abfd)->core_program | |
| 2525 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); | |
| 2526 | elf_tdata (abfd)->core_command | |
| 2527 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); | |
| 2528 | ||
| 2529 | return TRUE; | |
| 2530 | } | |
| 2531 | ||
| 183e98be AM |
2532 | static char * |
| 2533 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2534 | ...) | |
| 2535 | { | |
| 2536 | switch (note_type) | |
| 2537 | { | |
| 2538 | default: | |
| 2539 | return NULL; | |
| 2540 | ||
| 2541 | case NT_PRPSINFO: | |
| 2542 | { | |
| 2543 | char data[136]; | |
| 2544 | va_list ap; | |
| 2545 | ||
| 2546 | va_start (ap, note_type); | |
| 2547 | memset (data, 0, 40); | |
| 2548 | strncpy (data + 40, va_arg (ap, const char *), 16); | |
| 2549 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2550 | va_end (ap); | |
| 2551 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2552 | "CORE", note_type, data, sizeof (data)); | |
| 2553 | } | |
| 2554 | ||
| 2555 | case NT_PRSTATUS: | |
| 2556 | { | |
| 2557 | char data[504]; | |
| 2558 | va_list ap; | |
| 2559 | long pid; | |
| 2560 | int cursig; | |
| 2561 | const void *greg; | |
| 2562 | ||
| 2563 | va_start (ap, note_type); | |
| 2564 | memset (data, 0, 112); | |
| 2565 | pid = va_arg (ap, long); | |
| 2566 | bfd_put_32 (abfd, pid, data + 32); | |
| 2567 | cursig = va_arg (ap, int); | |
| 2568 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2569 | greg = va_arg (ap, const void *); | |
| 2570 | memcpy (data + 112, greg, 384); | |
| 2571 | memset (data + 496, 0, 8); | |
| 2572 | va_end (ap); | |
| 2573 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2574 | "CORE", note_type, data, sizeof (data)); | |
| 2575 | } | |
| 2576 | } | |
| 2577 | } | |
| 2578 | ||
| 5bd4f169 AM |
2579 | /* Merge backend specific data from an object file to the output |
| 2580 | object file when linking. */ | |
| 2f6d9989 | 2581 | |
| b34976b6 | 2582 | static bfd_boolean |
| 4ce794b7 | 2583 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 5bd4f169 | 2584 | { |
| 5bd4f169 AM |
2585 | /* Check if we have the same endianess. */ |
| 2586 | if (ibfd->xvec->byteorder != obfd->xvec->byteorder | |
| 87e226ce | 2587 | && ibfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN |
| 5bd4f169 AM |
2588 | && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN) |
| 2589 | { | |
| 2590 | const char *msg; | |
| 2591 | ||
| 2592 | if (bfd_big_endian (ibfd)) | |
| d003868e | 2593 | msg = _("%B: compiled for a big endian system " |
| 4ce794b7 | 2594 | "and target is little endian"); |
| 5bd4f169 | 2595 | else |
| d003868e | 2596 | msg = _("%B: compiled for a little endian system " |
| 4ce794b7 | 2597 | "and target is big endian"); |
| 5bd4f169 | 2598 | |
| d003868e | 2599 | (*_bfd_error_handler) (msg, ibfd); |
| 5bd4f169 AM |
2600 | |
| 2601 | bfd_set_error (bfd_error_wrong_format); | |
| b34976b6 | 2602 | return FALSE; |
| 5bd4f169 AM |
2603 | } |
| 2604 | ||
| b34976b6 | 2605 | return TRUE; |
| 5bd4f169 | 2606 | } |
| f0abc2a1 | 2607 | |
| 5d35169e AM |
2608 | /* Add extra PPC sections. */ |
| 2609 | ||
| b35d266b | 2610 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 2611 | { |
| 0112cd26 NC |
2612 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 2613 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2614 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2615 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2616 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2617 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 2618 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
2619 | }; |
| 2620 | ||
| 7c8fe5c4 AM |
2621 | enum _ppc64_sec_type { |
| 2622 | sec_normal = 0, | |
| 2623 | sec_opd = 1, | |
| 2624 | sec_toc = 2 | |
| 2625 | }; | |
| 2626 | ||
| f0abc2a1 AM |
2627 | struct _ppc64_elf_section_data |
| 2628 | { | |
| 2629 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 2630 | |
| f0abc2a1 AM |
2631 | union |
| 2632 | { | |
| 74f0fb50 AM |
2633 | /* An array with one entry for each opd function descriptor. */ |
| 2634 | struct _opd_sec_data | |
| 2635 | { | |
| 2636 | /* Points to the function code section for local opd entries. */ | |
| 2637 | asection **func_sec; | |
| 2638 | ||
| 2639 | /* After editing .opd, adjust references to opd local syms. */ | |
| 2640 | long *adjust; | |
| 2641 | } opd; | |
| 7c8fe5c4 | 2642 | |
| 3a71aa26 AM |
2643 | /* An array for toc sections, indexed by offset/8. */ |
| 2644 | struct _toc_sec_data | |
| 2645 | { | |
| 2646 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 2647 | unsigned *symndx; | |
| 2648 | ||
| 2649 | /* And the relocation addend. */ | |
| 2650 | bfd_vma *add; | |
| 2651 | } toc; | |
| 7c8fe5c4 AM |
2652 | } u; |
| 2653 | ||
| 2654 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 2655 | |
| 7c8fe5c4 AM |
2656 | /* Flag set when small branches are detected. Used to |
| 2657 | select suitable defaults for the stub group size. */ | |
| 2658 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
2659 | }; |
| 2660 | ||
| 2661 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 2662 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
2663 | |
| 2664 | static bfd_boolean | |
| 4ce794b7 | 2665 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 2666 | { |
| f592407e AM |
2667 | if (!sec->used_by_bfd) |
| 2668 | { | |
| 2669 | struct _ppc64_elf_section_data *sdata; | |
| 2670 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 2671 | |
| f592407e AM |
2672 | sdata = bfd_zalloc (abfd, amt); |
| 2673 | if (sdata == NULL) | |
| 2674 | return FALSE; | |
| 2675 | sec->used_by_bfd = sdata; | |
| 2676 | } | |
| f0abc2a1 AM |
2677 | |
| 2678 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 2679 | } | |
| 4025353c | 2680 | |
| 74f0fb50 | 2681 | static struct _opd_sec_data * |
| 4025353c AM |
2682 | get_opd_info (asection * sec) |
| 2683 | { | |
| 2684 | if (sec != NULL | |
| 2685 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 2686 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 2687 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
2688 | return NULL; |
| 2689 | } | |
| 90e3cdf2 JJ |
2690 | \f |
| 2691 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
2692 | static bfd_boolean synthetic_relocatable; |
| 2693 | ||
| 699733f6 | 2694 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
2695 | |
| 2696 | static int | |
| 2697 | compare_symbols (const void *ap, const void *bp) | |
| 2698 | { | |
| 2699 | const asymbol *a = * (const asymbol **) ap; | |
| 2700 | const asymbol *b = * (const asymbol **) bp; | |
| 2701 | ||
| 699733f6 AM |
2702 | /* Section symbols first. */ |
| 2703 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 2704 | return -1; |
| 699733f6 | 2705 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
2706 | return 1; |
| 2707 | ||
| 699733f6 | 2708 | /* then .opd symbols. */ |
| ffcfec52 AM |
2709 | if (strcmp (a->section->name, ".opd") == 0 |
| 2710 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 2711 | return -1; |
| ffcfec52 AM |
2712 | if (strcmp (a->section->name, ".opd") != 0 |
| 2713 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
2714 | return 1; |
| 2715 | ||
| 699733f6 | 2716 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
2717 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 2718 | == (SEC_CODE | SEC_ALLOC) | |
| 2719 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2720 | != (SEC_CODE | SEC_ALLOC)) | |
| 2721 | return -1; | |
| 2722 | ||
| 2723 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2724 | != (SEC_CODE | SEC_ALLOC) | |
| 2725 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2726 | == (SEC_CODE | SEC_ALLOC)) | |
| 2727 | return 1; | |
| 2728 | ||
| 2729 | if (synthetic_relocatable) | |
| 2730 | { | |
| 2731 | if (a->section->id < b->section->id) | |
| 2732 | return -1; | |
| 2733 | ||
| 2734 | if (a->section->id > b->section->id) | |
| 2735 | return 1; | |
| 2736 | } | |
| 2737 | ||
| 2738 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 2739 | return -1; | |
| 2740 | ||
| 2741 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 2742 | return 1; | |
| 2743 | ||
| 4d35a0aa AM |
2744 | /* For syms with the same value, prefer strong dynamic global function |
| 2745 | syms over other syms. */ | |
| 2746 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 2747 | return -1; | |
| 2748 | ||
| 2749 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 2750 | return 1; | |
| 2751 | ||
| 2752 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 2753 | return -1; | |
| 2754 | ||
| 2755 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 2756 | return 1; | |
| 2757 | ||
| 2758 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 2759 | return -1; | |
| 2760 | ||
| 2761 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 2762 | return 1; | |
| 2763 | ||
| 2764 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 2765 | return -1; | |
| 2766 | ||
| 2767 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 2768 | return 1; | |
| 2769 | ||
| 90e3cdf2 JJ |
2770 | return 0; |
| 2771 | } | |
| 2772 | ||
| 699733f6 | 2773 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 2774 | |
| 699733f6 AM |
2775 | static asymbol * |
| 2776 | sym_exists_at (asymbol **syms, long lo, long hi, int id, bfd_vma value) | |
| 90e3cdf2 | 2777 | { |
| 699733f6 | 2778 | long mid; |
| 90e3cdf2 | 2779 | |
| 699733f6 AM |
2780 | if (id == -1) |
| 2781 | { | |
| 2782 | while (lo < hi) | |
| 2783 | { | |
| 2784 | mid = (lo + hi) >> 1; | |
| 2785 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 2786 | lo = mid + 1; | |
| 2787 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 2788 | hi = mid; | |
| 2789 | else | |
| 2790 | return syms[mid]; | |
| 2791 | } | |
| 2792 | } | |
| 2793 | else | |
| 2794 | { | |
| 2795 | while (lo < hi) | |
| 2796 | { | |
| 2797 | mid = (lo + hi) >> 1; | |
| 2798 | if (syms[mid]->section->id < id) | |
| 2799 | lo = mid + 1; | |
| 2800 | else if (syms[mid]->section->id > id) | |
| 2801 | hi = mid; | |
| 2802 | else if (syms[mid]->value < value) | |
| 2803 | lo = mid + 1; | |
| 2804 | else if (syms[mid]->value > value) | |
| 2805 | hi = mid; | |
| 2806 | else | |
| 2807 | return syms[mid]; | |
| 2808 | } | |
| 2809 | } | |
| 2810 | return NULL; | |
| 90e3cdf2 JJ |
2811 | } |
| 2812 | ||
| 468392fb AM |
2813 | static bfd_boolean |
| 2814 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 2815 | { | |
| 2816 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 2817 | return ((section->flags & SEC_ALLOC) != 0 | |
| 2818 | && section->vma <= vma | |
| 2819 | && vma < section->vma + section->size); | |
| 2820 | } | |
| 2821 | ||
| 699733f6 | 2822 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| 468392fb | 2823 | entry syms. Also generate @plt symbols for the glink branch table. */ |
| 90e3cdf2 JJ |
2824 | |
| 2825 | static long | |
| a7535cf3 AM |
2826 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 2827 | long static_count, asymbol **static_syms, | |
| 2828 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 2829 | asymbol **ret) |
| 90e3cdf2 JJ |
2830 | { |
| 2831 | asymbol *s; | |
| 699733f6 AM |
2832 | long i; |
| 2833 | long count; | |
| 90e3cdf2 | 2834 | char *names; |
| a7535cf3 | 2835 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| 699733f6 | 2836 | asection *opd; |
| 90e3cdf2 | 2837 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 2838 | asymbol **syms; |
| 90e3cdf2 JJ |
2839 | |
| 2840 | *ret = NULL; | |
| 2841 | ||
| 2842 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 2843 | if (opd == NULL) | |
| 2844 | return 0; | |
| 2845 | ||
| a7535cf3 | 2846 | symcount = static_count; |
| c9727e01 | 2847 | if (!relocatable) |
| a7535cf3 | 2848 | symcount += dyn_count; |
| 90e3cdf2 | 2849 | if (symcount == 0) |
| c9727e01 | 2850 | return 0; |
| 90e3cdf2 | 2851 | |
| a7535cf3 AM |
2852 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 2853 | if (syms == NULL) | |
| 7356fed5 | 2854 | return -1; |
| a7535cf3 AM |
2855 | |
| 2856 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 2857 | { | |
| 2858 | /* Use both symbol tables. */ | |
| 2859 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 2860 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 2861 | } | |
| 2862 | else if (!relocatable && static_count == 0) | |
| 2863 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 2864 | else | |
| 2865 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 2866 | ||
| 90e3cdf2 | 2867 | synthetic_relocatable = relocatable; |
| 595da8c5 | 2868 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 2869 | |
| c9727e01 AM |
2870 | if (!relocatable && symcount > 1) |
| 2871 | { | |
| 2872 | long j; | |
| 2873 | /* Trim duplicate syms, since we may have merged the normal and | |
| 2874 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 2875 | different values, so trim any with the same value. */ |
| c9727e01 AM |
2876 | for (i = 1, j = 1; i < symcount; ++i) |
| 2877 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 2878 | != syms[i]->value + syms[i]->section->vma) | |
| 2879 | syms[j++] = syms[i]; | |
| 2880 | symcount = j; | |
| 2881 | } | |
| 2882 | ||
| 699733f6 | 2883 | i = 0; |
| ffcfec52 | 2884 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
2885 | ++i; |
| 2886 | codesecsym = i; | |
| 90e3cdf2 | 2887 | |
| 699733f6 AM |
2888 | for (; i < symcount; ++i) |
| 2889 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2890 | != (SEC_CODE | SEC_ALLOC)) | |
| 2891 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 2892 | break; | |
| 2893 | codesecsymend = i; | |
| 90e3cdf2 | 2894 | |
| 699733f6 AM |
2895 | for (; i < symcount; ++i) |
| 2896 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 2897 | break; | |
| 2898 | secsymend = i; | |
| 90e3cdf2 | 2899 | |
| 699733f6 | 2900 | for (; i < symcount; ++i) |
| ffcfec52 | 2901 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
2902 | break; |
| 2903 | opdsymend = i; | |
| 90e3cdf2 | 2904 | |
| 699733f6 AM |
2905 | for (; i < symcount; ++i) |
| 2906 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 2907 | != (SEC_CODE | SEC_ALLOC)) | |
| 2908 | break; | |
| 2909 | symcount = i; | |
| 2910 | ||
| c9727e01 | 2911 | count = 0; |
| 90e3cdf2 | 2912 | |
| 699733f6 | 2913 | if (relocatable) |
| 90e3cdf2 | 2914 | { |
| 699733f6 AM |
2915 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 2916 | arelent *r; | |
| 2917 | size_t size; | |
| 2918 | long relcount; | |
| 90e3cdf2 | 2919 | |
| 468392fb AM |
2920 | if (opdsymend == secsymend) |
| 2921 | goto done; | |
| 2922 | ||
| 699733f6 | 2923 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 2924 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 2925 | if (relcount == 0) |
| c9727e01 | 2926 | goto done; |
| 90e3cdf2 | 2927 | |
| 7356fed5 AM |
2928 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 2929 | { | |
| 2930 | count = -1; | |
| 2931 | goto done; | |
| 2932 | } | |
| 2933 | ||
| 699733f6 | 2934 | size = 0; |
| 595da8c5 | 2935 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
2936 | { |
| 2937 | asymbol *sym; | |
| 90e3cdf2 | 2938 | |
| 595da8c5 | 2939 | while (r < opd->relocation + relcount |
| 699733f6 AM |
2940 | && r->address < syms[i]->value + opd->vma) |
| 2941 | ++r; | |
| 90e3cdf2 | 2942 | |
| 595da8c5 | 2943 | if (r == opd->relocation + relcount) |
| 699733f6 | 2944 | break; |
| 90e3cdf2 | 2945 | |
| 699733f6 AM |
2946 | if (r->address != syms[i]->value + opd->vma) |
| 2947 | continue; | |
| 90e3cdf2 | 2948 | |
| 699733f6 AM |
2949 | if (r->howto->type != R_PPC64_ADDR64) |
| 2950 | continue; | |
| 90e3cdf2 | 2951 | |
| 699733f6 AM |
2952 | sym = *r->sym_ptr_ptr; |
| 2953 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 2954 | sym->section->id, sym->value + r->addend)) | |
| 2955 | { | |
| 2956 | ++count; | |
| 2957 | size += sizeof (asymbol); | |
| 2958 | size += strlen (syms[i]->name) + 2; | |
| 2959 | } | |
| 2960 | } | |
| 90e3cdf2 | 2961 | |
| 699733f6 AM |
2962 | s = *ret = bfd_malloc (size); |
| 2963 | if (s == NULL) | |
| 2964 | { | |
| 7356fed5 | 2965 | count = -1; |
| c9727e01 | 2966 | goto done; |
| 699733f6 | 2967 | } |
| 90e3cdf2 | 2968 | |
| 699733f6 | 2969 | names = (char *) (s + count); |
| 90e3cdf2 | 2970 | |
| 595da8c5 | 2971 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 2972 | { |
| 699733f6 | 2973 | asymbol *sym; |
| 90e3cdf2 | 2974 | |
| 595da8c5 | 2975 | while (r < opd->relocation + relcount |
| 699733f6 AM |
2976 | && r->address < syms[i]->value + opd->vma) |
| 2977 | ++r; | |
| 90e3cdf2 | 2978 | |
| 595da8c5 | 2979 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
2980 | break; |
| 2981 | ||
| 2982 | if (r->address != syms[i]->value + opd->vma) | |
| 2983 | continue; | |
| 2984 | ||
| 2985 | if (r->howto->type != R_PPC64_ADDR64) | |
| 2986 | continue; | |
| 90e3cdf2 | 2987 | |
| 699733f6 AM |
2988 | sym = *r->sym_ptr_ptr; |
| 2989 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 2990 | sym->section->id, sym->value + r->addend)) | |
| 2991 | { | |
| 2992 | size_t len; | |
| 2993 | ||
| 2994 | *s = *syms[i]; | |
| 6ba2a415 | 2995 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
2996 | s->section = sym->section; |
| 2997 | s->value = sym->value + r->addend; | |
| 2998 | s->name = names; | |
| 2999 | *names++ = '.'; | |
| 3000 | len = strlen (syms[i]->name); | |
| 3001 | memcpy (names, syms[i]->name, len + 1); | |
| 3002 | names += len + 1; | |
| 6f610d07 UW |
3003 | /* Have udata.p point back to the original symbol this |
| 3004 | synthetic symbol was derived from. */ | |
| 3005 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3006 | s++; |
| 3007 | } | |
| 3008 | } | |
| 3009 | } | |
| 3010 | else | |
| 90e3cdf2 | 3011 | { |
| 468392fb | 3012 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 699733f6 AM |
3013 | bfd_byte *contents; |
| 3014 | size_t size; | |
| 468392fb AM |
3015 | long plt_count = 0; |
| 3016 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3017 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3018 | arelent *p; | |
| 90e3cdf2 | 3019 | |
| 699733f6 AM |
3020 | if (!bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 3021 | { | |
| 3022 | if (contents) | |
| c9727e01 AM |
3023 | { |
| 3024 | free_contents_and_exit: | |
| 3025 | free (contents); | |
| 3026 | } | |
| 7356fed5 | 3027 | count = -1; |
| c9727e01 | 3028 | goto done; |
| 699733f6 | 3029 | } |
| 90e3cdf2 | 3030 | |
| 699733f6 AM |
3031 | size = 0; |
| 3032 | for (i = secsymend; i < opdsymend; ++i) | |
| 3033 | { | |
| 3034 | bfd_vma ent; | |
| 90e3cdf2 | 3035 | |
| 5ef11c02 AM |
3036 | /* Ignore bogus symbols. */ |
| 3037 | if (syms[i]->value > opd->size - 8) | |
| 3038 | continue; | |
| 3039 | ||
| 699733f6 AM |
3040 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3041 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3042 | { | |
| 3043 | ++count; | |
| 3044 | size += sizeof (asymbol); | |
| 3045 | size += strlen (syms[i]->name) + 2; | |
| 3046 | } | |
| 3047 | } | |
| 90e3cdf2 | 3048 | |
| 468392fb | 3049 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3050 | if (dyn_count != 0 |
| 3051 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3052 | { |
| 3053 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3054 | size_t extdynsize; | |
| 3055 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3056 | ||
| 3057 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| 3058 | goto free_contents_and_exit; | |
| 3059 | ||
| 3060 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3061 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3062 | ||
| 3063 | extdyn = dynbuf; | |
| 3064 | extdynend = extdyn + dynamic->size; | |
| 3065 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3066 | { | |
| 3067 | Elf_Internal_Dyn dyn; | |
| 3068 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3069 | ||
| 3070 | if (dyn.d_tag == DT_NULL) | |
| 3071 | break; | |
| 3072 | ||
| 3073 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3074 | { | |
| 3075 | /* The first glink stub starts at offset 32; see comment in | |
| 3076 | ppc64_elf_finish_dynamic_sections. */ | |
| 3077 | glink_vma = dyn.d_un.d_val + 32; | |
| 3078 | /* The .glink section usually does not survive the final | |
| 3079 | link; search for the section (usually .text) where the | |
| 3080 | glink stubs now reside. */ | |
| 3081 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3082 | &glink_vma); | |
| 3083 | break; | |
| 3084 | } | |
| 3085 | } | |
| 3086 | ||
| 3087 | free (dynbuf); | |
| 3088 | } | |
| 3089 | ||
| 3090 | if (glink != NULL) | |
| 3091 | { | |
| 3092 | /* Determine __glink trampoline by reading the relative branch | |
| 3093 | from the first glink stub. */ | |
| 3094 | bfd_byte buf[4]; | |
| 3095 | if (bfd_get_section_contents (abfd, glink, buf, | |
| 3096 | glink_vma + 4 - glink->vma, 4)) | |
| 3097 | { | |
| 3098 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3099 | insn ^= B_DOT; | |
| 3100 | if ((insn & ~0x3fffffc) == 0) | |
| 3101 | resolv_vma = glink_vma + 4 + (insn ^ 0x2000000) - 0x2000000; | |
| 3102 | } | |
| 3103 | ||
| 3104 | if (resolv_vma) | |
| 3105 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3106 | |
| 066ee829 AM |
3107 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3108 | if (relplt != NULL) | |
| 3109 | { | |
| 3110 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3111 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| 3112 | goto free_contents_and_exit; | |
| 468392fb | 3113 | |
| 066ee829 AM |
3114 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3115 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3116 | |
| 066ee829 AM |
3117 | p = relplt->relocation; |
| 3118 | for (i = 0; i < plt_count; i++, p++) | |
| 3119 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3120 | } | |
| 468392fb AM |
3121 | } |
| 3122 | ||
| 699733f6 AM |
3123 | s = *ret = bfd_malloc (size); |
| 3124 | if (s == NULL) | |
| 7356fed5 | 3125 | goto free_contents_and_exit; |
| 90e3cdf2 | 3126 | |
| 468392fb | 3127 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3128 | |
| 699733f6 | 3129 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3130 | { |
| 699733f6 | 3131 | bfd_vma ent; |
| 90e3cdf2 | 3132 | |
| 5ef11c02 AM |
3133 | if (syms[i]->value > opd->size - 8) |
| 3134 | continue; | |
| 3135 | ||
| 699733f6 AM |
3136 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3137 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3138 | { |
| c9727e01 | 3139 | long lo, hi; |
| 699733f6 | 3140 | size_t len; |
| c9727e01 | 3141 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3142 | |
| 699733f6 AM |
3143 | *s = *syms[i]; |
| 3144 | lo = codesecsym; | |
| 3145 | hi = codesecsymend; | |
| 3146 | while (lo < hi) | |
| 3147 | { | |
| c9727e01 | 3148 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3149 | if (syms[mid]->section->vma < ent) |
| 3150 | lo = mid + 1; | |
| 3151 | else if (syms[mid]->section->vma > ent) | |
| 3152 | hi = mid; | |
| 3153 | else | |
| c9727e01 AM |
3154 | { |
| 3155 | sec = syms[mid]->section; | |
| 3156 | break; | |
| 3157 | } | |
| 699733f6 AM |
3158 | } |
| 3159 | ||
| c9727e01 | 3160 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3161 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3162 | |
| 3163 | for (; sec != NULL; sec = sec->next) | |
| 3164 | { | |
| 3165 | if (sec->vma > ent) | |
| 3166 | break; | |
| 3167 | if ((sec->flags & SEC_ALLOC) == 0 | |
| 3168 | || (sec->flags & SEC_LOAD) == 0) | |
| 3169 | break; | |
| 3170 | if ((sec->flags & SEC_CODE) != 0) | |
| 3171 | s->section = sec; | |
| 3172 | } | |
| 6ba2a415 | 3173 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3174 | s->value = ent - s->section->vma; |
| 3175 | s->name = names; | |
| 3176 | *names++ = '.'; | |
| 3177 | len = strlen (syms[i]->name); | |
| 3178 | memcpy (names, syms[i]->name, len + 1); | |
| 3179 | names += len + 1; | |
| 6f610d07 UW |
3180 | /* Have udata.p point back to the original symbol this |
| 3181 | synthetic symbol was derived from. */ | |
| 3182 | s->udata.p = syms[i]; | |
| 699733f6 | 3183 | s++; |
| 90e3cdf2 | 3184 | } |
| 90e3cdf2 | 3185 | } |
| 699733f6 | 3186 | free (contents); |
| 468392fb AM |
3187 | |
| 3188 | if (glink != NULL && relplt != NULL) | |
| 3189 | { | |
| 3190 | if (resolv_vma) | |
| 3191 | { | |
| 3192 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3193 | memset (s, 0, sizeof *s); |
| 468392fb | 3194 | s->the_bfd = abfd; |
| 6ba2a415 | 3195 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3196 | s->section = glink; |
| 3197 | s->value = resolv_vma - glink->vma; | |
| 3198 | s->name = names; | |
| 3199 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3200 | names += sizeof ("__glink_PLTresolve"); | |
| 3201 | s++; | |
| 3202 | count++; | |
| 3203 | } | |
| 3204 | ||
| 3205 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3206 | stub rather than on the glink branch table entry. The | |
| 3207 | objdump disassembler would then use a sensible symbol | |
| 3208 | name on plt calls. The difficulty in doing so is | |
| 3209 | a) finding the stubs, and, | |
| 3210 | b) matching stubs against plt entries, and, | |
| 3211 | c) there can be multiple stubs for a given plt entry. | |
| 3212 | ||
| 3213 | Solving (a) could be done by code scanning, but older | |
| 3214 | ppc64 binaries used different stubs to current code. | |
| 3215 | (b) is the tricky one since you need to known the toc | |
| 3216 | pointer for at least one function that uses a pic stub to | |
| 3217 | be able to calculate the plt address referenced. | |
| 3218 | (c) means gdb would need to set multiple breakpoints (or | |
| 3219 | find the glink branch itself) when setting breakpoints | |
| 3220 | for pending shared library loads. */ | |
| 3221 | p = relplt->relocation; | |
| 3222 | for (i = 0; i < plt_count; i++, p++) | |
| 3223 | { | |
| 3224 | size_t len; | |
| 3225 | ||
| 3226 | *s = **p->sym_ptr_ptr; | |
| 3227 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3228 | we are defining a symbol, ensure one of them is set. */ | |
| 3229 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3230 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3231 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3232 | s->section = glink; |
| 3233 | s->value = glink_vma - glink->vma; | |
| 3234 | s->name = names; | |
| 3235 | s->udata.p = NULL; | |
| 3236 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3237 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3238 | names += len; | |
| 3239 | memcpy (names, "@plt", sizeof ("@plt")); | |
| 3240 | names += sizeof ("@plt"); | |
| 3241 | s++; | |
| 3242 | glink_vma += 8; | |
| 3243 | if (i >= 0x8000) | |
| 3244 | glink_vma += 4; | |
| 3245 | } | |
| 3246 | count += plt_count; | |
| 3247 | } | |
| 90e3cdf2 JJ |
3248 | } |
| 3249 | ||
| c9727e01 | 3250 | done: |
| a7535cf3 | 3251 | free (syms); |
| 90e3cdf2 JJ |
3252 | return count; |
| 3253 | } | |
| 5bd4f169 | 3254 | \f |
| 65f38f15 AM |
3255 | /* The following functions are specific to the ELF linker, while |
| 3256 | functions above are used generally. Those named ppc64_elf_* are | |
| 3257 | called by the main ELF linker code. They appear in this file more | |
| 3258 | or less in the order in which they are called. eg. | |
| 3259 | ppc64_elf_check_relocs is called early in the link process, | |
| 3260 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3261 | called. |
| 3262 | ||
| 3263 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3264 | functions have both a function code symbol and a function descriptor | |
| 3265 | symbol. A call to foo in a relocatable object file looks like: | |
| 3266 | ||
| 3267 | . .text | |
| 3268 | . x: | |
| 3269 | . bl .foo | |
| 3270 | . nop | |
| 3271 | ||
| 3272 | The function definition in another object file might be: | |
| 3273 | ||
| 3274 | . .section .opd | |
| 3275 | . foo: .quad .foo | |
| 3276 | . .quad .TOC.@tocbase | |
| 3277 | . .quad 0 | |
| 3278 | . | |
| 3279 | . .text | |
| 3280 | . .foo: blr | |
| 3281 | ||
| 3282 | When the linker resolves the call during a static link, the branch | |
| 3283 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3284 | If the function definition is in a shared library, things are a little | |
| 3285 | different: The call goes via a plt call stub, the opd information gets | |
| 3286 | copied to the plt, and the linker patches the nop. | |
| 3287 | ||
| 3288 | . x: | |
| 3289 | . bl .foo_stub | |
| 3290 | . ld 2,40(1) | |
| 3291 | . | |
| 3292 | . | |
| 3293 | . .foo_stub: | |
| 3294 | . addis 12,2,Lfoo@toc@ha # in practice, the call stub | |
| 411e1bfb | 3295 | . addi 12,12,Lfoo@toc@l # is slightly optimized, but |
| e86ce104 AM |
3296 | . std 2,40(1) # this is the general idea |
| 3297 | . ld 11,0(12) | |
| 3298 | . ld 2,8(12) | |
| 3299 | . mtctr 11 | |
| 3300 | . ld 11,16(12) | |
| 3301 | . bctr | |
| 3302 | . | |
| 3303 | . .section .plt | |
| 3304 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3305 | ||
| 3306 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3307 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3308 | copying. | |
| 3309 | ||
| 3310 | What are the difficulties here? Well, firstly, the relocations | |
| 3311 | examined by the linker in check_relocs are against the function code | |
| 3312 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3313 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3314 | to carefully copy dynamic link information from one symbol to the other. | |
| 3315 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3316 | symbol as is normal for most other backends. We need foo dynamic | |
| 3317 | instead, at least for an application final link. However, when | |
| 3318 | creating a shared library containing foo, we need to have both symbols | |
| 3319 | dynamic so that references to .foo are satisfied during the early | |
| 3320 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3321 | definition from some other object, eg. a static library. |
| 3322 | ||
| 3323 | Update: As of August 2004, we support a new convention. Function | |
| 3324 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3325 | behaves exactly as "bl .foo". */ | |
| 65f38f15 AM |
3326 | |
| 3327 | /* The linker needs to keep track of the number of relocs that it | |
| 3328 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
| 3329 | This is so that it can later discard them if they are found to be | |
| 3330 | unnecessary. We store the information in a field extending the | |
| 3331 | regular ELF linker hash table. */ | |
| 3332 | ||
| 3333 | struct ppc_dyn_relocs | |
| 3334 | { | |
| 3335 | struct ppc_dyn_relocs *next; | |
| 3336 | ||
| 3337 | /* The input section of the reloc. */ | |
| 3338 | asection *sec; | |
| 3339 | ||
| 3340 | /* Total number of relocs copied for the input section. */ | |
| 3341 | bfd_size_type count; | |
| 3342 | ||
| 3343 | /* Number of pc-relative relocs copied for the input section. */ | |
| 3344 | bfd_size_type pc_count; | |
| 3345 | }; | |
| 3346 | ||
| 411e1bfb AM |
3347 | /* Track GOT entries needed for a given symbol. We might need more |
| 3348 | than one got entry per symbol. */ | |
| 3349 | struct got_entry | |
| 3350 | { | |
| 3351 | struct got_entry *next; | |
| 3352 | ||
| e7b938ca | 3353 | /* The symbol addend that we'll be placing in the GOT. */ |
| 411e1bfb AM |
3354 | bfd_vma addend; |
| 3355 | ||
| e717da7e AM |
3356 | /* Unlike other ELF targets, we use separate GOT entries for the same |
| 3357 | symbol referenced from different input files. This is to support | |
| 3358 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 102890f0 AM |
3359 | from one input file to another. FIXME: After group_sections we |
| 3360 | ought to merge entries within the group. | |
| e717da7e AM |
3361 | |
| 3362 | Point to the BFD owning this GOT entry. */ | |
| 3363 | bfd *owner; | |
| 3364 | ||
| 3365 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 3366 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| 3367 | char tls_type; | |
| 3368 | ||
| e7b938ca | 3369 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ |
| 411e1bfb AM |
3370 | union |
| 3371 | { | |
| 3372 | bfd_signed_vma refcount; | |
| 3373 | bfd_vma offset; | |
| 3374 | } got; | |
| 411e1bfb AM |
3375 | }; |
| 3376 | ||
| 3377 | /* The same for PLT. */ | |
| 3378 | struct plt_entry | |
| 3379 | { | |
| 3380 | struct plt_entry *next; | |
| 3381 | ||
| 3382 | bfd_vma addend; | |
| 3383 | ||
| 3384 | union | |
| 3385 | { | |
| 3386 | bfd_signed_vma refcount; | |
| 3387 | bfd_vma offset; | |
| 3388 | } plt; | |
| 3389 | }; | |
| 3390 | ||
| 1d483afe | 3391 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3392 | selects those that must be copied when linking a shared library, |
| 3393 | even when the symbol is local. */ | |
| 65f38f15 | 3394 | |
| 1d483afe AM |
3395 | static int |
| 3396 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3397 | enum elf_ppc64_reloc_type r_type) | |
| 3398 | { | |
| 3399 | switch (r_type) | |
| 3400 | { | |
| 3401 | default: | |
| 3402 | return 1; | |
| 3403 | ||
| 3404 | case R_PPC64_REL32: | |
| 3405 | case R_PPC64_REL64: | |
| 3406 | case R_PPC64_REL30: | |
| 3407 | return 0; | |
| 3408 | ||
| 3409 | case R_PPC64_TPREL16: | |
| 3410 | case R_PPC64_TPREL16_LO: | |
| 3411 | case R_PPC64_TPREL16_HI: | |
| 3412 | case R_PPC64_TPREL16_HA: | |
| 3413 | case R_PPC64_TPREL16_DS: | |
| 3414 | case R_PPC64_TPREL16_LO_DS: | |
| 3415 | case R_PPC64_TPREL16_HIGHER: | |
| 3416 | case R_PPC64_TPREL16_HIGHERA: | |
| 3417 | case R_PPC64_TPREL16_HIGHEST: | |
| 3418 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3419 | case R_PPC64_TPREL64: | |
| 3420 | return !info->executable; | |
| 3421 | } | |
| 3422 | } | |
| 65f38f15 | 3423 | |
| f4656909 AM |
3424 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3425 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3426 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3427 | shared lib. With code that gcc generates, it's vital that this be |
| 3428 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3429 | the address of a function descriptor, which resides in the .opd | |
| 3430 | section. gcc uses the descriptor directly rather than going via the | |
| 3431 | GOT as some other ABI's do, which means that initialized function | |
| 3432 | pointers must reference the descriptor. Thus, a function pointer | |
| 3433 | initialized to the address of a function in a shared library will | |
| 3434 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3435 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3436 | presents a problem as a plt entry for that function is also |
| 3437 | initialized from the function descriptor symbol and the copy reloc | |
| 3438 | may not be initialized first. */ | |
| a23b6845 | 3439 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3440 | |
| 721956f4 AM |
3441 | /* Section name for stubs is the associated section name plus this |
| 3442 | string. */ | |
| 3443 | #define STUB_SUFFIX ".stub" | |
| 3444 | ||
| 3445 | /* Linker stubs. | |
| 3446 | ppc_stub_long_branch: | |
| 3447 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3448 | destination, but a 24 bit branch in a stub section will reach. | |
| 3449 | . b dest | |
| 3450 | ||
| 3451 | ppc_stub_plt_branch: | |
| 3452 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3453 | reach its destination. | |
| 87e226ce AM |
3454 | . addis %r12,%r2,xxx@toc@ha |
| 3455 | . ld %r11,xxx@toc@l(%r12) | |
| 721956f4 AM |
3456 | . mtctr %r11 |
| 3457 | . bctr | |
| 3458 | ||
| 3459 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3460 | Used to call a function in a shared library. If it so happens that |
| 3461 | the plt entry referenced crosses a 64k boundary, then an extra | |
| ac2df442 | 3462 | "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr". |
| 87e226ce | 3463 | . addis %r12,%r2,xxx@toc@ha |
| 721956f4 | 3464 | . std %r2,40(%r1) |
| 87e226ce | 3465 | . ld %r11,xxx+0@toc@l(%r12) |
| 721956f4 | 3466 | . mtctr %r11 |
| ac2df442 | 3467 | . ld %r2,xxx+8@toc@l(%r12) |
| 87e226ce | 3468 | . ld %r11,xxx+16@toc@l(%r12) |
| 721956f4 | 3469 | . bctr |
| ad8e1ba5 AM |
3470 | |
| 3471 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3472 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3473 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3474 | . std %r2,40(%r1) | |
| 3475 | . addis %r2,%r2,off@ha | |
| 3476 | . addi %r2,%r2,off@l | |
| 3477 | . b dest | |
| 3478 | ||
| 3479 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3480 | . std %r2,40(%r1) | |
| 3481 | . addis %r12,%r2,xxx@toc@ha | |
| 3482 | . ld %r11,xxx@toc@l(%r12) | |
| 3483 | . addis %r2,%r2,off@ha | |
| 3484 | . addi %r2,%r2,off@l | |
| 3485 | . mtctr %r11 | |
| 3486 | . bctr | |
| ac2df442 AM |
3487 | |
| 3488 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3489 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3490 | */ |
| 3491 | ||
| 3492 | enum ppc_stub_type { | |
| 3493 | ppc_stub_none, | |
| 3494 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3495 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3496 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3497 | ppc_stub_plt_branch_r2off, |
| 721956f4 AM |
3498 | ppc_stub_plt_call |
| 3499 | }; | |
| 3500 | ||
| 3501 | struct ppc_stub_hash_entry { | |
| 3502 | ||
| 3503 | /* Base hash table entry structure. */ | |
| 3504 | struct bfd_hash_entry root; | |
| 3505 | ||
| ad8e1ba5 AM |
3506 | enum ppc_stub_type stub_type; |
| 3507 | ||
| 721956f4 AM |
3508 | /* The stub section. */ |
| 3509 | asection *stub_sec; | |
| 3510 | ||
| 3511 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3512 | bfd_vma stub_offset; | |
| 3513 | ||
| 3514 | /* Given the symbol's value and its section we can determine its final | |
| 3515 | value when building the stubs (so the stub knows where to jump. */ | |
| 3516 | bfd_vma target_value; | |
| 3517 | asection *target_section; | |
| 3518 | ||
| 721956f4 AM |
3519 | /* The symbol table entry, if any, that this was derived from. */ |
| 3520 | struct ppc_link_hash_entry *h; | |
| 3521 | ||
| 411e1bfb AM |
3522 | /* And the reloc addend that this was derived from. */ |
| 3523 | bfd_vma addend; | |
| 3524 | ||
| 721956f4 AM |
3525 | /* Where this stub is being called from, or, in the case of combined |
| 3526 | stub sections, the first input section in the group. */ | |
| 3527 | asection *id_sec; | |
| 3528 | }; | |
| 3529 | ||
| 3530 | struct ppc_branch_hash_entry { | |
| 3531 | ||
| 3532 | /* Base hash table entry structure. */ | |
| 3533 | struct bfd_hash_entry root; | |
| 3534 | ||
| c456f082 | 3535 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3536 | unsigned int offset; |
| 3537 | ||
| 3538 | /* Generation marker. */ | |
| 3539 | unsigned int iter; | |
| 3540 | }; | |
| 65f38f15 AM |
3541 | |
| 3542 | struct ppc_link_hash_entry | |
| 3543 | { | |
| 3544 | struct elf_link_hash_entry elf; | |
| 3545 | ||
| b3fac117 AM |
3546 | union { |
| 3547 | /* A pointer to the most recently used stub hash entry against this | |
| 3548 | symbol. */ | |
| 3549 | struct ppc_stub_hash_entry *stub_cache; | |
| 3550 | ||
| 3551 | /* A pointer to the next symbol starting with a '.' */ | |
| 3552 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3553 | } u; | |
| 721956f4 | 3554 | |
| 65f38f15 AM |
3555 | /* Track dynamic relocs copied for this symbol. */ |
| 3556 | struct ppc_dyn_relocs *dyn_relocs; | |
| e86ce104 | 3557 | |
| 721956f4 | 3558 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3559 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3560 | |
| e86ce104 AM |
3561 | /* Flag function code and descriptor symbols. */ |
| 3562 | unsigned int is_func:1; | |
| 3563 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3564 | unsigned int fake:1; |
| 411e1bfb | 3565 | |
| c5614fa4 AM |
3566 | /* Whether global opd/toc sym has been adjusted or not. |
| 3567 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3568 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3569 | unsigned int adjust_done:1; |
| 3570 | ||
| 99877b66 AM |
3571 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3572 | unsigned int was_undefined:1; | |
| 3573 | ||
| 411e1bfb | 3574 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3575 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3576 | corresponding relocs are encountered during check_relocs. | |
| 3577 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3578 | indicate the corresponding GOT entry type is not needed. | |
| 3579 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3580 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3581 | just for convenience in distinguishing the two cases. */ | |
| 3582 | #define TLS_GD 1 /* GD reloc. */ | |
| 3583 | #define TLS_LD 2 /* LD reloc. */ | |
| 3584 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3585 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3586 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3587 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3588 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| 3589 | char tls_mask; | |
| 65f38f15 AM |
3590 | }; |
| 3591 | ||
| 3592 | /* ppc64 ELF linker hash table. */ | |
| 3593 | ||
| 3594 | struct ppc_link_hash_table | |
| 3595 | { | |
| 3596 | struct elf_link_hash_table elf; | |
| 3597 | ||
| 721956f4 AM |
3598 | /* The stub hash table. */ |
| 3599 | struct bfd_hash_table stub_hash_table; | |
| 3600 | ||
| 3601 | /* Another hash table for plt_branch stubs. */ | |
| 3602 | struct bfd_hash_table branch_hash_table; | |
| 3603 | ||
| 3604 | /* Linker stub bfd. */ | |
| 3605 | bfd *stub_bfd; | |
| 3606 | ||
| 3607 | /* Linker call-backs. */ | |
| 4ce794b7 AM |
3608 | asection * (*add_stub_section) (const char *, asection *); |
| 3609 | void (*layout_sections_again) (void); | |
| 721956f4 AM |
3610 | |
| 3611 | /* Array to keep track of which stub sections have been created, and | |
| 3612 | information on stub grouping. */ | |
| 3613 | struct map_stub { | |
| 3614 | /* This is the section to which stubs in the group will be attached. */ | |
| 3615 | asection *link_sec; | |
| 3616 | /* The stub section. */ | |
| 3617 | asection *stub_sec; | |
| ad8e1ba5 AM |
3618 | /* Along with elf_gp, specifies the TOC pointer used in this group. */ |
| 3619 | bfd_vma toc_off; | |
| 721956f4 AM |
3620 | } *stub_group; |
| 3621 | ||
| ad8e1ba5 AM |
3622 | /* Temp used when calculating TOC pointers. */ |
| 3623 | bfd_vma toc_curr; | |
| 3624 | ||
| 8f3bab57 AM |
3625 | /* Highest input section id. */ |
| 3626 | int top_id; | |
| 3627 | ||
| 734b6cf9 AM |
3628 | /* Highest output section index. */ |
| 3629 | int top_index; | |
| 3630 | ||
| b3fac117 AM |
3631 | /* Used when adding symbols. */ |
| 3632 | struct ppc_link_hash_entry *dot_syms; | |
| 3633 | ||
| 734b6cf9 AM |
3634 | /* List of input sections for each output section. */ |
| 3635 | asection **input_list; | |
| 721956f4 | 3636 | |
| 65f38f15 | 3637 | /* Short-cuts to get to dynamic linker sections. */ |
| 4ce794b7 | 3638 | asection *got; |
| 4ce794b7 AM |
3639 | asection *plt; |
| 3640 | asection *relplt; | |
| 3641 | asection *dynbss; | |
| 3642 | asection *relbss; | |
| 3643 | asection *glink; | |
| 82bd7b59 | 3644 | asection *sfpr; |
| 4ce794b7 AM |
3645 | asection *brlt; |
| 3646 | asection *relbrlt; | |
| ec338859 | 3647 | |
| 8387904d AM |
3648 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 3649 | struct ppc_link_hash_entry *tls_get_addr; | |
| 3650 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 3651 | |
| 9b5ecbd0 AM |
3652 | /* Statistics. */ |
| 3653 | unsigned long stub_count[ppc_stub_plt_call]; | |
| 3654 | ||
| ee75fd95 AM |
3655 | /* Number of stubs against global syms. */ |
| 3656 | unsigned long stub_globals; | |
| 3657 | ||
| ad8e1ba5 | 3658 | /* Set if we should emit symbols for stubs. */ |
| 99877b66 | 3659 | unsigned int emit_stub_syms:1; |
| ad8e1ba5 | 3660 | |
| 4c52953f AM |
3661 | /* Support for multiple toc sections. */ |
| 3662 | unsigned int no_multi_toc:1; | |
| 3663 | unsigned int multi_toc_needed:1; | |
| 3664 | ||
| 5d1634d7 | 3665 | /* Set on error. */ |
| 99877b66 | 3666 | unsigned int stub_error:1; |
| 721956f4 | 3667 | |
| 7d9616d7 | 3668 | /* Temp used by ppc64_elf_process_dot_syms. */ |
| 99877b66 | 3669 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
3670 | |
| 3671 | /* Incremented every time we size stubs. */ | |
| 3672 | unsigned int stub_iteration; | |
| 5d1634d7 | 3673 | |
| 87d72d41 AM |
3674 | /* Small local sym cache. */ |
| 3675 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
3676 | }; |
| 3677 | ||
| 4c52953f AM |
3678 | /* Rename some of the generic section flags to better document how they |
| 3679 | are used here. */ | |
| 3680 | #define has_toc_reloc has_gp_reloc | |
| 3681 | #define makes_toc_func_call need_finalize_relax | |
| 3682 | #define call_check_in_progress reloc_done | |
| 3683 | ||
| 65f38f15 AM |
3684 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 3685 | ||
| 3686 | #define ppc_hash_table(p) \ | |
| 3687 | ((struct ppc_link_hash_table *) ((p)->hash)) | |
| 3688 | ||
| 721956f4 AM |
3689 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 3690 | ((struct ppc_stub_hash_entry *) \ | |
| 3691 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3692 | ||
| 3693 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 3694 | ((struct ppc_branch_hash_entry *) \ | |
| 3695 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 3696 | ||
| 3697 | /* Create an entry in the stub hash table. */ | |
| 3698 | ||
| 3699 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3700 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 3701 | struct bfd_hash_table *table, | |
| 3702 | const char *string) | |
| 721956f4 AM |
3703 | { |
| 3704 | /* Allocate the structure if it has not already been allocated by a | |
| 3705 | subclass. */ | |
| 3706 | if (entry == NULL) | |
| 3707 | { | |
| 3708 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 3709 | if (entry == NULL) | |
| 3710 | return entry; | |
| 3711 | } | |
| 3712 | ||
| 3713 | /* Call the allocation method of the superclass. */ | |
| 3714 | entry = bfd_hash_newfunc (entry, table, string); | |
| 3715 | if (entry != NULL) | |
| 3716 | { | |
| 3717 | struct ppc_stub_hash_entry *eh; | |
| 3718 | ||
| 3719 | /* Initialize the local fields. */ | |
| 3720 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 3721 | eh->stub_type = ppc_stub_none; |
| 721956f4 AM |
3722 | eh->stub_sec = NULL; |
| 3723 | eh->stub_offset = 0; | |
| 3724 | eh->target_value = 0; | |
| 3725 | eh->target_section = NULL; | |
| 721956f4 AM |
3726 | eh->h = NULL; |
| 3727 | eh->id_sec = NULL; | |
| 3728 | } | |
| 3729 | ||
| 3730 | return entry; | |
| 3731 | } | |
| 3732 | ||
| 3733 | /* Create an entry in the branch hash table. */ | |
| 3734 | ||
| 3735 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3736 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 3737 | struct bfd_hash_table *table, | |
| 3738 | const char *string) | |
| 721956f4 AM |
3739 | { |
| 3740 | /* Allocate the structure if it has not already been allocated by a | |
| 3741 | subclass. */ | |
| 3742 | if (entry == NULL) | |
| 3743 | { | |
| 3744 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 3745 | if (entry == NULL) | |
| 3746 | return entry; | |
| 3747 | } | |
| 3748 | ||
| 3749 | /* Call the allocation method of the superclass. */ | |
| 3750 | entry = bfd_hash_newfunc (entry, table, string); | |
| 3751 | if (entry != NULL) | |
| 3752 | { | |
| 3753 | struct ppc_branch_hash_entry *eh; | |
| 3754 | ||
| 3755 | /* Initialize the local fields. */ | |
| 3756 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 3757 | eh->offset = 0; | |
| 3758 | eh->iter = 0; | |
| 3759 | } | |
| 3760 | ||
| 3761 | return entry; | |
| 3762 | } | |
| 3763 | ||
| 65f38f15 AM |
3764 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 3765 | ||
| 3766 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
3767 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 3768 | struct bfd_hash_table *table, | |
| 3769 | const char *string) | |
| 65f38f15 AM |
3770 | { |
| 3771 | /* Allocate the structure if it has not already been allocated by a | |
| 3772 | subclass. */ | |
| 3773 | if (entry == NULL) | |
| 3774 | { | |
| 3775 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 3776 | if (entry == NULL) | |
| 3777 | return entry; | |
| 3778 | } | |
| 3779 | ||
| 3780 | /* Call the allocation method of the superclass. */ | |
| 3781 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 3782 | if (entry != NULL) | |
| 3783 | { | |
| 3784 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 3785 | ||
| b3fac117 | 3786 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 3787 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
3788 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 3789 | ||
| 3790 | /* When making function calls, old ABI code references function entry | |
| 3791 | points (dot symbols), while new ABI code references the function | |
| 3792 | descriptor symbol. We need to make any combination of reference and | |
| 3793 | definition work together, without breaking archive linking. | |
| 3794 | ||
| 3795 | For a defined function "foo" and an undefined call to "bar": | |
| 3796 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 3797 | "bar" too). | |
| 3798 | A new object defines "foo" and references "bar". | |
| 3799 | ||
| 3800 | A new object thus has no problem with its undefined symbols being | |
| 3801 | satisfied by definitions in an old object. On the other hand, the | |
| 3802 | old object won't have ".bar" satisfied by a new object. | |
| 3803 | ||
| 3804 | Keep a list of newly added dot-symbols. */ | |
| 3805 | ||
| 3806 | if (string[0] == '.') | |
| 3807 | { | |
| 3808 | struct ppc_link_hash_table *htab; | |
| 3809 | ||
| 3810 | htab = (struct ppc_link_hash_table *) table; | |
| 3811 | eh->u.next_dot_sym = htab->dot_syms; | |
| 3812 | htab->dot_syms = eh; | |
| 3813 | } | |
| 65f38f15 AM |
3814 | } |
| 3815 | ||
| 3816 | return entry; | |
| 3817 | } | |
| 3818 | ||
| 3819 | /* Create a ppc64 ELF linker hash table. */ | |
| 3820 | ||
| 3821 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 3822 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
3823 | { |
| 3824 | struct ppc_link_hash_table *htab; | |
| 3825 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 3826 | ||
| 4ce794b7 | 3827 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
3828 | if (htab == NULL) |
| 3829 | return NULL; | |
| 3830 | ||
| 66eb6687 AM |
3831 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 3832 | sizeof (struct ppc_link_hash_entry))) | |
| 65f38f15 | 3833 | { |
| e2d34d7d | 3834 | free (htab); |
| 65f38f15 AM |
3835 | return NULL; |
| 3836 | } | |
| 3837 | ||
| 721956f4 | 3838 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
3839 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 3840 | sizeof (struct ppc_stub_hash_entry))) | |
| 721956f4 AM |
3841 | return NULL; |
| 3842 | ||
| 3843 | /* And the branch hash table. */ | |
| 66eb6687 AM |
3844 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 3845 | sizeof (struct ppc_branch_hash_entry))) | |
| 721956f4 AM |
3846 | return NULL; |
| 3847 | ||
| 3254fd24 AM |
3848 | /* Initializing two fields of the union is just cosmetic. We really |
| 3849 | only care about glist, but when compiled on a 32-bit host the | |
| 3850 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 3851 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
3852 | htab->elf.init_got_refcount.refcount = 0; |
| 3853 | htab->elf.init_got_refcount.glist = NULL; | |
| 3854 | htab->elf.init_plt_refcount.refcount = 0; | |
| 3855 | htab->elf.init_plt_refcount.glist = NULL; | |
| 3856 | htab->elf.init_got_offset.offset = 0; | |
| 3857 | htab->elf.init_got_offset.glist = NULL; | |
| 3858 | htab->elf.init_plt_offset.offset = 0; | |
| 3859 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 3860 | |
| 65f38f15 AM |
3861 | return &htab->elf.root; |
| 3862 | } | |
| 3863 | ||
| 721956f4 AM |
3864 | /* Free the derived linker hash table. */ |
| 3865 | ||
| 3866 | static void | |
| 4ce794b7 | 3867 | ppc64_elf_link_hash_table_free (struct bfd_link_hash_table *hash) |
| 721956f4 AM |
3868 | { |
| 3869 | struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash; | |
| 3870 | ||
| 3871 | bfd_hash_table_free (&ret->stub_hash_table); | |
| 3872 | bfd_hash_table_free (&ret->branch_hash_table); | |
| 3873 | _bfd_generic_link_hash_table_free (hash); | |
| 3874 | } | |
| 3875 | ||
| e717da7e AM |
3876 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 3877 | ||
| 3878 | void | |
| 3879 | ppc64_elf_init_stub_bfd (bfd *abfd, struct bfd_link_info *info) | |
| 3880 | { | |
| 3881 | struct ppc_link_hash_table *htab; | |
| 3882 | ||
| 3883 | elf_elfheader (abfd)->e_ident[EI_CLASS] = ELFCLASS64; | |
| 3884 | ||
| 3885 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 3886 | linker created stub bfd. This ensures that the GOT header is at | |
| 3887 | the start of the output TOC section. */ | |
| 3888 | htab = ppc_hash_table (info); | |
| 3889 | htab->stub_bfd = abfd; | |
| 3890 | htab->elf.dynobj = abfd; | |
| 3891 | } | |
| 3892 | ||
| 721956f4 AM |
3893 | /* Build a name for an entry in the stub hash table. */ |
| 3894 | ||
| 3895 | static char * | |
| 4ce794b7 AM |
3896 | ppc_stub_name (const asection *input_section, |
| 3897 | const asection *sym_sec, | |
| 3898 | const struct ppc_link_hash_entry *h, | |
| 3899 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
3900 | { |
| 3901 | char *stub_name; | |
| 3902 | bfd_size_type len; | |
| 3903 | ||
| 3904 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 3905 | offsets from a sym as a branch target? In fact, we could | |
| 3906 | probably assume the addend is always zero. */ | |
| 3907 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 3908 | ||
| 3909 | if (h) | |
| 3910 | { | |
| 3911 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 3912 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
3913 | if (stub_name == NULL) |
| 3914 | return stub_name; | |
| 3915 | ||
| 3916 | sprintf (stub_name, "%08x.%s+%x", | |
| 3917 | input_section->id & 0xffffffff, | |
| 3918 | h->elf.root.root.string, | |
| 3919 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
3920 | } |
| 3921 | else | |
| 3922 | { | |
| ad8e1ba5 | 3923 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 3924 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
3925 | if (stub_name == NULL) |
| 3926 | return stub_name; | |
| 3927 | ||
| 3928 | sprintf (stub_name, "%08x.%x:%x+%x", | |
| 3929 | input_section->id & 0xffffffff, | |
| 3930 | sym_sec->id & 0xffffffff, | |
| 3931 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 3932 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 3933 | } |
| ee75fd95 AM |
3934 | if (stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| 3935 | stub_name[len - 2] = 0; | |
| 721956f4 AM |
3936 | return stub_name; |
| 3937 | } | |
| 3938 | ||
| 3939 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 3940 | creating the stub name takes a bit of time. */ | |
| 3941 | ||
| 3942 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
3943 | ppc_get_stub_entry (const asection *input_section, |
| 3944 | const asection *sym_sec, | |
| 039b3fef | 3945 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
3946 | const Elf_Internal_Rela *rel, |
| 3947 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
3948 | { |
| 3949 | struct ppc_stub_hash_entry *stub_entry; | |
| 721956f4 AM |
3950 | const asection *id_sec; |
| 3951 | ||
| 3952 | /* If this input section is part of a group of sections sharing one | |
| 3953 | stub section, then use the id of the first section in the group. | |
| 3954 | Stub names need to include a section id, as there may well be | |
| 3955 | more than one stub used to reach say, printf, and we need to | |
| 3956 | distinguish between them. */ | |
| 3957 | id_sec = htab->stub_group[input_section->id].link_sec; | |
| 3958 | ||
| b3fac117 AM |
3959 | if (h != NULL && h->u.stub_cache != NULL |
| 3960 | && h->u.stub_cache->h == h | |
| 3961 | && h->u.stub_cache->id_sec == id_sec) | |
| 721956f4 | 3962 | { |
| b3fac117 | 3963 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
3964 | } |
| 3965 | else | |
| 3966 | { | |
| 3967 | char *stub_name; | |
| 3968 | ||
| 3969 | stub_name = ppc_stub_name (id_sec, sym_sec, h, rel); | |
| 3970 | if (stub_name == NULL) | |
| 3971 | return NULL; | |
| 3972 | ||
| 3973 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 3974 | stub_name, FALSE, FALSE); |
| 721956f4 | 3975 | if (h != NULL) |
| b3fac117 | 3976 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
3977 | |
| 3978 | free (stub_name); | |
| 3979 | } | |
| 3980 | ||
| 3981 | return stub_entry; | |
| 3982 | } | |
| 3983 | ||
| 3984 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 3985 | stub entry are initialised. */ | |
| 3986 | ||
| 3987 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
3988 | ppc_add_stub (const char *stub_name, |
| 3989 | asection *section, | |
| 3990 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
3991 | { |
| 3992 | asection *link_sec; | |
| 3993 | asection *stub_sec; | |
| 3994 | struct ppc_stub_hash_entry *stub_entry; | |
| 3995 | ||
| 3996 | link_sec = htab->stub_group[section->id].link_sec; | |
| 3997 | stub_sec = htab->stub_group[section->id].stub_sec; | |
| 3998 | if (stub_sec == NULL) | |
| 3999 | { | |
| 4000 | stub_sec = htab->stub_group[link_sec->id].stub_sec; | |
| 4001 | if (stub_sec == NULL) | |
| 4002 | { | |
| d4c88bbb | 4003 | size_t namelen; |
| 721956f4 AM |
4004 | bfd_size_type len; |
| 4005 | char *s_name; | |
| 4006 | ||
| d4c88bbb AM |
4007 | namelen = strlen (link_sec->name); |
| 4008 | len = namelen + sizeof (STUB_SUFFIX); | |
| 721956f4 AM |
4009 | s_name = bfd_alloc (htab->stub_bfd, len); |
| 4010 | if (s_name == NULL) | |
| 4011 | return NULL; | |
| 4012 | ||
| d4c88bbb AM |
4013 | memcpy (s_name, link_sec->name, namelen); |
| 4014 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 721956f4 AM |
4015 | stub_sec = (*htab->add_stub_section) (s_name, link_sec); |
| 4016 | if (stub_sec == NULL) | |
| 4017 | return NULL; | |
| 4018 | htab->stub_group[link_sec->id].stub_sec = stub_sec; | |
| 4019 | } | |
| 4020 | htab->stub_group[section->id].stub_sec = stub_sec; | |
| 4021 | } | |
| 4022 | ||
| 4023 | /* Enter this entry into the linker stub hash table. */ | |
| 4024 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4025 | TRUE, FALSE); |
| 721956f4 AM |
4026 | if (stub_entry == NULL) |
| 4027 | { | |
| d003868e AM |
4028 | (*_bfd_error_handler) (_("%B: cannot create stub entry %s"), |
| 4029 | section->owner, stub_name); | |
| 721956f4 AM |
4030 | return NULL; |
| 4031 | } | |
| 4032 | ||
| 4033 | stub_entry->stub_sec = stub_sec; | |
| 4034 | stub_entry->stub_offset = 0; | |
| 4035 | stub_entry->id_sec = link_sec; | |
| 4036 | return stub_entry; | |
| 4037 | } | |
| 4038 | ||
| 82bd7b59 AM |
4039 | /* Create sections for linker generated code. */ |
| 4040 | ||
| b34976b6 | 4041 | static bfd_boolean |
| 4ce794b7 | 4042 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) |
| 82bd7b59 AM |
4043 | { |
| 4044 | struct ppc_link_hash_table *htab; | |
| 4045 | flagword flags; | |
| 4046 | ||
| 4047 | htab = ppc_hash_table (info); | |
| 4048 | ||
| 4049 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4050 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY | |
| 4051 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 3496cb2a L |
4052 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", |
| 4053 | flags); | |
| 82bd7b59 | 4054 | if (htab->sfpr == NULL |
| 82bd7b59 | 4055 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) |
| b34976b6 | 4056 | return FALSE; |
| 82bd7b59 | 4057 | |
| 721956f4 | 4058 | /* Create .glink for lazy dynamic linking support. */ |
| 3496cb2a L |
4059 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", |
| 4060 | flags); | |
| 4ce794b7 | 4061 | if (htab->glink == NULL |
| ee4bf8d2 | 4062 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) |
| b34976b6 | 4063 | return FALSE; |
| 82bd7b59 | 4064 | |
| c456f082 | 4065 | /* Create branch lookup table for plt_branch stubs. */ |
| e4e0193e AM |
4066 | flags = (SEC_ALLOC | SEC_LOAD |
| 4067 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4068 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4069 | flags); | |
| 4ce794b7 | 4070 | if (htab->brlt == NULL |
| 4ce794b7 | 4071 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) |
| b34976b6 | 4072 | return FALSE; |
| 721956f4 | 4073 | |
| e4e0193e | 4074 | if (!info->shared) |
| c456f082 AM |
4075 | return TRUE; |
| 4076 | ||
| e4e0193e AM |
4077 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY |
| 4078 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4079 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4080 | ".rela.branch_lt", | |
| 4081 | flags); | |
| c456f082 AM |
4082 | if (!htab->relbrlt |
| 4083 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4084 | return FALSE; | |
| 4085 | ||
| b34976b6 | 4086 | return TRUE; |
| 82bd7b59 AM |
4087 | } |
| 4088 | ||
| e717da7e AM |
4089 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4090 | not already done. */ | |
| 65f38f15 | 4091 | |
| b34976b6 | 4092 | static bfd_boolean |
| e717da7e | 4093 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4094 | { |
| e717da7e AM |
4095 | asection *got, *relgot; |
| 4096 | flagword flags; | |
| 4097 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4098 | |
| 0c8d6e5c | 4099 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd NC |
4100 | return FALSE; |
| 4101 | ||
| 4ce794b7 | 4102 | if (!htab->got) |
| e717da7e AM |
4103 | { |
| 4104 | if (! _bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4105 | return FALSE; | |
| 4106 | ||
| 4107 | htab->got = bfd_get_section_by_name (htab->elf.dynobj, ".got"); | |
| 4108 | if (!htab->got) | |
| 4109 | abort (); | |
| 4110 | } | |
| 4111 | ||
| 4112 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4113 | | SEC_LINKER_CREATED); | |
| 4114 | ||
| c456f082 | 4115 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4116 | if (!got |
| e717da7e AM |
4117 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4118 | return FALSE; | |
| 65f38f15 | 4119 | |
| c456f082 AM |
4120 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4121 | flags | SEC_READONLY); | |
| e717da7e | 4122 | if (!relgot |
| e717da7e | 4123 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4124 | return FALSE; |
| e717da7e AM |
4125 | |
| 4126 | ppc64_elf_tdata (abfd)->got = got; | |
| 4127 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4128 | return TRUE; |
| 65f38f15 | 4129 | } |
| 5bd4f169 | 4130 | |
| 82bd7b59 | 4131 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4132 | |
| b34976b6 | 4133 | static bfd_boolean |
| 4ce794b7 | 4134 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4135 | { |
| 65f38f15 | 4136 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4137 | |
| 65f38f15 | 4138 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4139 | return FALSE; |
| 65f38f15 | 4140 | |
| e717da7e AM |
4141 | htab = ppc_hash_table (info); |
| 4142 | if (!htab->got) | |
| 4143 | htab->got = bfd_get_section_by_name (dynobj, ".got"); | |
| 4ce794b7 AM |
4144 | htab->plt = bfd_get_section_by_name (dynobj, ".plt"); |
| 4145 | htab->relplt = bfd_get_section_by_name (dynobj, ".rela.plt"); | |
| 4146 | htab->dynbss = bfd_get_section_by_name (dynobj, ".dynbss"); | |
| 65f38f15 | 4147 | if (!info->shared) |
| 4ce794b7 | 4148 | htab->relbss = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 65f38f15 | 4149 | |
| e717da7e | 4150 | if (!htab->got || !htab->plt || !htab->relplt || !htab->dynbss |
| 4ce794b7 | 4151 | || (!info->shared && !htab->relbss)) |
| 65f38f15 AM |
4152 | abort (); |
| 4153 | ||
| b34976b6 | 4154 | return TRUE; |
| 5bd4f169 AM |
4155 | } |
| 4156 | ||
| 40d16e0b AM |
4157 | /* Merge PLT info on FROM with that on TO. */ |
| 4158 | ||
| 4159 | static void | |
| 4160 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4161 | struct ppc_link_hash_entry *to) | |
| 4162 | { | |
| 4163 | if (from->elf.plt.plist != NULL) | |
| 4164 | { | |
| 4165 | if (to->elf.plt.plist != NULL) | |
| 4166 | { | |
| 4167 | struct plt_entry **entp; | |
| 4168 | struct plt_entry *ent; | |
| 4169 | ||
| 4170 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4171 | { | |
| 4172 | struct plt_entry *dent; | |
| 4173 | ||
| 4174 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4175 | if (dent->addend == ent->addend) | |
| 4176 | { | |
| 4177 | dent->plt.refcount += ent->plt.refcount; | |
| 4178 | *entp = ent->next; | |
| 4179 | break; | |
| 4180 | } | |
| 4181 | if (dent == NULL) | |
| 4182 | entp = &ent->next; | |
| 4183 | } | |
| 4184 | *entp = to->elf.plt.plist; | |
| 4185 | } | |
| 4186 | ||
| 4187 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4188 | from->elf.plt.plist = NULL; | |
| 4189 | } | |
| 4190 | } | |
| 4191 | ||
| 65f38f15 AM |
4192 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4193 | ||
| 4194 | static void | |
| fcfa13d2 AM |
4195 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4196 | struct elf_link_hash_entry *dir, | |
| 4197 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4198 | { |
| 4199 | struct ppc_link_hash_entry *edir, *eind; | |
| 4200 | ||
| 4201 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4202 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4203 | ||
| 411e1bfb | 4204 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4205 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4206 | { |
| bbd7ec4a AM |
4207 | if (edir->dyn_relocs != NULL) |
| 4208 | { | |
| 4209 | struct ppc_dyn_relocs **pp; | |
| 4210 | struct ppc_dyn_relocs *p; | |
| 4211 | ||
| fcfa13d2 | 4212 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4213 | list. Merge any entries against the same section. */ |
| 4214 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4215 | { | |
| 4216 | struct ppc_dyn_relocs *q; | |
| 4217 | ||
| 4218 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4219 | if (q->sec == p->sec) | |
| 4220 | { | |
| 4221 | q->pc_count += p->pc_count; | |
| 4222 | q->count += p->count; | |
| 4223 | *pp = p->next; | |
| 4224 | break; | |
| 4225 | } | |
| 4226 | if (q == NULL) | |
| 4227 | pp = &p->next; | |
| 4228 | } | |
| 4229 | *pp = edir->dyn_relocs; | |
| 4230 | } | |
| 4231 | ||
| 65f38f15 AM |
4232 | edir->dyn_relocs = eind->dyn_relocs; |
| 4233 | eind->dyn_relocs = NULL; | |
| 4234 | } | |
| 65f38f15 | 4235 | |
| 6349e628 AM |
4236 | edir->is_func |= eind->is_func; |
| 4237 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 58ac9f71 | 4238 | edir->tls_mask |= eind->tls_mask; |
| 6349e628 | 4239 | |
| 81848ca0 | 4240 | /* If called to transfer flags for a weakdef during processing |
| f5385ebf | 4241 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. |
| 81848ca0 | 4242 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ |
| f5385ebf AM |
4243 | if (!(ELIMINATE_COPY_RELOCS |
| 4244 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4245 | && edir->elf.dynamic_adjusted)) | |
| 4246 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 81848ca0 | 4247 | |
| f5385ebf AM |
4248 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
| 4249 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4250 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4251 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| 6349e628 AM |
4252 | |
| 4253 | /* If we were called to copy over info for a weak sym, that's all. */ | |
| 4254 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4255 | return; | |
| 4256 | ||
| 81848ca0 AM |
4257 | /* Copy over got entries that we may have already seen to the |
| 4258 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4259 | if (eind->elf.got.glist != NULL) |
| 4260 | { | |
| 4261 | if (edir->elf.got.glist != NULL) | |
| 4262 | { | |
| 4263 | struct got_entry **entp; | |
| 4264 | struct got_entry *ent; | |
| 4265 | ||
| 4266 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4267 | { | |
| 4268 | struct got_entry *dent; | |
| 4269 | ||
| 4270 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4271 | if (dent->addend == ent->addend | |
| e717da7e | 4272 | && dent->owner == ent->owner |
| 411e1bfb AM |
4273 | && dent->tls_type == ent->tls_type) |
| 4274 | { | |
| 4275 | dent->got.refcount += ent->got.refcount; | |
| 4276 | *entp = ent->next; | |
| 4277 | break; | |
| 4278 | } | |
| 4279 | if (dent == NULL) | |
| 4280 | entp = &ent->next; | |
| 4281 | } | |
| 4282 | *entp = edir->elf.got.glist; | |
| 4283 | } | |
| 4284 | ||
| 4285 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4286 | eind->elf.got.glist = NULL; | |
| 4287 | } | |
| 4288 | ||
| 4289 | /* And plt entries. */ | |
| 40d16e0b | 4290 | move_plt_plist (eind, edir); |
| 411e1bfb | 4291 | |
| fcfa13d2 | 4292 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4293 | { |
| fcfa13d2 AM |
4294 | if (edir->elf.dynindx != -1) |
| 4295 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4296 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4297 | edir->elf.dynindx = eind->elf.dynindx; |
| 4298 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4299 | eind->elf.dynindx = -1; | |
| 4300 | eind->elf.dynstr_index = 0; | |
| 4301 | } | |
| 411e1bfb AM |
4302 | } |
| 4303 | ||
| 8387904d AM |
4304 | /* Find the function descriptor hash entry from the given function code |
| 4305 | hash entry FH. Link the entries via their OH fields. */ | |
| 4306 | ||
| 4307 | static struct ppc_link_hash_entry * | |
| 4308 | get_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) | |
| 4309 | { | |
| 4310 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4311 | ||
| 4312 | if (fdh == NULL) | |
| 4313 | { | |
| 4314 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4315 | ||
| 4316 | fdh = (struct ppc_link_hash_entry *) | |
| 4317 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| 4318 | if (fdh != NULL) | |
| 4319 | { | |
| 4320 | fdh->is_func_descriptor = 1; | |
| 4321 | fdh->oh = fh; | |
| 4322 | fh->is_func = 1; | |
| 4323 | fh->oh = fdh; | |
| 4324 | } | |
| 4325 | } | |
| 4326 | ||
| 4327 | return fdh; | |
| 4328 | } | |
| 4329 | ||
| bb700d78 AM |
4330 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4331 | ||
| 4332 | static struct ppc_link_hash_entry * | |
| 4333 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4334 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4335 | { |
| 4336 | bfd *abfd; | |
| 4337 | asymbol *newsym; | |
| 4338 | struct bfd_link_hash_entry *bh; | |
| 4339 | struct ppc_link_hash_entry *fdh; | |
| 4340 | ||
| 4341 | abfd = fh->elf.root.u.undef.abfd; | |
| 4342 | newsym = bfd_make_empty_symbol (abfd); | |
| 4343 | newsym->name = fh->elf.root.root.string + 1; | |
| 4344 | newsym->section = bfd_und_section_ptr; | |
| 4345 | newsym->value = 0; | |
| 908b32fc | 4346 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4347 | |
| 4348 | bh = NULL; | |
| 4349 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4350 | newsym->flags, newsym->section, | |
| 4351 | newsym->value, NULL, FALSE, FALSE, | |
| 4352 | &bh)) | |
| 4353 | return NULL; | |
| 4354 | ||
| 4355 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4356 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4357 | fdh->fake = 1; |
| 4358 | fdh->is_func_descriptor = 1; | |
| 4359 | fdh->oh = fh; | |
| 4360 | fh->is_func = 1; | |
| 4361 | fh->oh = fdh; | |
| bb700d78 AM |
4362 | return fdh; |
| 4363 | } | |
| 4364 | ||
| 8387904d AM |
4365 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4366 | function type. */ | |
| 555cd476 AM |
4367 | |
| 4368 | static bfd_boolean | |
| b3fac117 | 4369 | ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED, |
| 555cd476 AM |
4370 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 4371 | Elf_Internal_Sym *isym, | |
| b3fac117 | 4372 | const char **name ATTRIBUTE_UNUSED, |
| 555cd476 AM |
4373 | flagword *flags ATTRIBUTE_UNUSED, |
| 4374 | asection **sec, | |
| 4375 | bfd_vma *value ATTRIBUTE_UNUSED) | |
| 4376 | { | |
| 8843416a AM |
4377 | if (*sec != NULL |
| 4378 | && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0) | |
| 555cd476 | 4379 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); |
| 433817dd | 4380 | |
| 555cd476 AM |
4381 | return TRUE; |
| 4382 | } | |
| 4383 | ||
| 8387904d | 4384 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4385 | inclusion of a new ABI object archive that defines "bar". |
| 4386 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4387 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4388 | |
| 4389 | static struct elf_link_hash_entry * | |
| 4390 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4391 | struct bfd_link_info *info, | |
| 4392 | const char *name) | |
| 4393 | { | |
| 4394 | struct elf_link_hash_entry *h; | |
| 4395 | char *dot_name; | |
| 4396 | size_t len; | |
| 4397 | ||
| 4398 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4399 | if (h != NULL |
| 4400 | /* Don't return this sym if it is a fake function descriptor | |
| 4401 | created by add_symbol_adjust. */ | |
| 4402 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4403 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4404 | return h; |
| 4405 | ||
| 4406 | if (name[0] == '.') | |
| 4407 | return h; | |
| 4408 | ||
| 4409 | len = strlen (name); | |
| 4410 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4411 | if (dot_name == NULL) | |
| 4412 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4413 | dot_name[0] = '.'; | |
| 4414 | memcpy (dot_name + 1, name, len + 1); | |
| 4415 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4416 | bfd_release (abfd, dot_name); | |
| 4417 | return h; | |
| 4418 | } | |
| 4419 | ||
| 4420 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4421 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 4422 | are made weak. This stops later archive searches from including an | |
| 4423 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
4424 | prevents the linker complaining about undefined symbols. |
| 4425 | We also check and correct mismatched symbol visibility here. The | |
| 4426 | most restrictive visibility of the function descriptor and the | |
| 4427 | function entry symbol is used. */ | |
| 8387904d AM |
4428 | |
| 4429 | static bfd_boolean | |
| b3fac117 | 4430 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 4431 | { |
| 8387904d AM |
4432 | struct ppc_link_hash_table *htab; |
| 4433 | struct ppc_link_hash_entry *fdh; | |
| 4434 | ||
| b3fac117 | 4435 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
4436 | return TRUE; |
| 4437 | ||
| b3fac117 AM |
4438 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 4439 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 4440 | |
| b3fac117 AM |
4441 | if (eh->elf.root.root.string[0] != '.') |
| 4442 | abort (); | |
| 8387904d | 4443 | |
| b3fac117 | 4444 | htab = ppc_hash_table (info); |
| 99877b66 | 4445 | fdh = get_fdh (eh, htab); |
| bb700d78 | 4446 | if (fdh == NULL |
| b3fac117 | 4447 | && !info->relocatable |
| bb700d78 AM |
4448 | && (eh->elf.root.type == bfd_link_hash_undefined |
| 4449 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 4450 | && eh->elf.ref_regular) | |
| 4451 | { | |
| 4452 | /* Make an undefweak function descriptor sym, which is enough to | |
| 4453 | pull in an --as-needed shared lib, but won't cause link | |
| 4454 | errors. Archives are handled elsewhere. */ | |
| b3fac117 | 4455 | fdh = make_fdh (info, eh); |
| bb700d78 | 4456 | if (fdh == NULL) |
| b3fac117 | 4457 | return FALSE; |
| bb700d78 AM |
4458 | else |
| 4459 | fdh->elf.ref_regular = 1; | |
| 4460 | } | |
| e87d886e | 4461 | else if (fdh != NULL) |
| 8387904d | 4462 | { |
| 35b0ce59 AM |
4463 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 4464 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 4465 | if (entry_vis < descr_vis) | |
| 4466 | fdh->elf.other += entry_vis - descr_vis; | |
| 4467 | else if (entry_vis > descr_vis) | |
| 4468 | eh->elf.other += descr_vis - entry_vis; | |
| 4469 | ||
| e87d886e AM |
4470 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 4471 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 4472 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
4473 | { |
| 4474 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 4475 | eh->was_undefined = 1; | |
| 4476 | htab->twiddled_syms = 1; | |
| 4477 | } | |
| 8387904d | 4478 | } |
| 99877b66 | 4479 | |
| 8387904d AM |
4480 | return TRUE; |
| 4481 | } | |
| 4482 | ||
| b3fac117 AM |
4483 | /* Process list of dot-symbols we made in link_hash_newfunc. */ |
| 4484 | ||
| 8387904d | 4485 | static bfd_boolean |
| 7d9616d7 | 4486 | ppc64_elf_process_dot_syms (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 4487 | { |
| 99877b66 | 4488 | struct ppc_link_hash_table *htab; |
| b3fac117 | 4489 | struct ppc_link_hash_entry **p, *eh; |
| 433817dd | 4490 | |
| 99877b66 | 4491 | htab = ppc_hash_table (info); |
| 0c8d6e5c | 4492 | if (!is_ppc64_elf (info->output_bfd)) |
| 35b0ce59 AM |
4493 | return TRUE; |
| 4494 | ||
| 0c8d6e5c | 4495 | if (is_ppc64_elf (ibfd)) |
| b3fac117 AM |
4496 | { |
| 4497 | p = &htab->dot_syms; | |
| 4498 | while ((eh = *p) != NULL) | |
| 4499 | { | |
| 4500 | *p = NULL; | |
| 4501 | if (!add_symbol_adjust (eh, info)) | |
| 4502 | return FALSE; | |
| 4503 | p = &eh->u.next_dot_sym; | |
| 4504 | } | |
| 4505 | } | |
| 4506 | ||
| 4507 | /* Clear the list for non-ppc64 input files. */ | |
| 4508 | p = &htab->dot_syms; | |
| 4509 | while ((eh = *p) != NULL) | |
| 4510 | { | |
| 4511 | *p = NULL; | |
| 4512 | p = &eh->u.next_dot_sym; | |
| 4513 | } | |
| 99877b66 AM |
4514 | |
| 4515 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 4516 | undef_weak. */ | |
| 4517 | if (htab->twiddled_syms) | |
| 4518 | { | |
| 77cfaee6 | 4519 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
4520 | htab->twiddled_syms = 0; |
| 4521 | } | |
| b3fac117 | 4522 | return TRUE; |
| 8387904d AM |
4523 | } |
| 4524 | ||
| 97fed1c9 JJ |
4525 | /* Undo hash table changes when an --as-needed input file is determined |
| 4526 | not to be needed. */ | |
| 4527 | ||
| 4528 | static bfd_boolean | |
| 4529 | ppc64_elf_as_needed_cleanup (bfd *ibfd ATTRIBUTE_UNUSED, | |
| 4530 | struct bfd_link_info *info) | |
| 4531 | { | |
| 4532 | ppc_hash_table (info)->dot_syms = NULL; | |
| 4533 | return TRUE; | |
| 4534 | } | |
| 4535 | ||
| 411e1bfb | 4536 | static bfd_boolean |
| 4ce794b7 AM |
4537 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 4538 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
4539 | { |
| 4540 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e7b938ca | 4541 | char *local_got_tls_masks; |
| 411e1bfb AM |
4542 | |
| 4543 | if (local_got_ents == NULL) | |
| 4544 | { | |
| 4545 | bfd_size_type size = symtab_hdr->sh_info; | |
| 4546 | ||
| e7b938ca | 4547 | size *= sizeof (*local_got_ents) + sizeof (*local_got_tls_masks); |
| 4ce794b7 | 4548 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb AM |
4549 | if (local_got_ents == NULL) |
| 4550 | return FALSE; | |
| 4551 | elf_local_got_ents (abfd) = local_got_ents; | |
| 4552 | } | |
| 4553 | ||
| 4554 | if ((tls_type & TLS_EXPLICIT) == 0) | |
| 4555 | { | |
| 4556 | struct got_entry *ent; | |
| 4557 | ||
| 4558 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
4559 | if (ent->addend == r_addend |
| 4560 | && ent->owner == abfd | |
| 4561 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
4562 | break; |
| 4563 | if (ent == NULL) | |
| 4564 | { | |
| 4565 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 4566 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
4567 | if (ent == NULL) |
| 4568 | return FALSE; | |
| 4569 | ent->next = local_got_ents[r_symndx]; | |
| 4570 | ent->addend = r_addend; | |
| e717da7e | 4571 | ent->owner = abfd; |
| 411e1bfb AM |
4572 | ent->tls_type = tls_type; |
| 4573 | ent->got.refcount = 0; | |
| 4574 | local_got_ents[r_symndx] = ent; | |
| 4575 | } | |
| 4576 | ent->got.refcount += 1; | |
| 4577 | } | |
| 4578 | ||
| e7b938ca AM |
4579 | local_got_tls_masks = (char *) (local_got_ents + symtab_hdr->sh_info); |
| 4580 | local_got_tls_masks[r_symndx] |= tls_type; | |
| 411e1bfb | 4581 | return TRUE; |
| 65f38f15 AM |
4582 | } |
| 4583 | ||
| 411e1bfb | 4584 | static bfd_boolean |
| 4ce794b7 | 4585 | update_plt_info (bfd *abfd, struct ppc_link_hash_entry *eh, bfd_vma addend) |
| 1e2f5b6e | 4586 | { |
| 411e1bfb | 4587 | struct plt_entry *ent; |
| 1e2f5b6e | 4588 | |
| 411e1bfb AM |
4589 | for (ent = eh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 4590 | if (ent->addend == addend) | |
| 4591 | break; | |
| 4592 | if (ent == NULL) | |
| 1e2f5b6e | 4593 | { |
| 411e1bfb | 4594 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 4595 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
4596 | if (ent == NULL) |
| 4597 | return FALSE; | |
| 4598 | ent->next = eh->elf.plt.plist; | |
| 4599 | ent->addend = addend; | |
| 4600 | ent->plt.refcount = 0; | |
| 4601 | eh->elf.plt.plist = ent; | |
| 1e2f5b6e | 4602 | } |
| 411e1bfb | 4603 | ent->plt.refcount += 1; |
| f5385ebf | 4604 | eh->elf.needs_plt = 1; |
| 93f3fa99 AM |
4605 | if (eh->elf.root.root.string[0] == '.' |
| 4606 | && eh->elf.root.root.string[1] != '\0') | |
| 4607 | eh->is_func = 1; | |
| b34976b6 | 4608 | return TRUE; |
| 1e2f5b6e AM |
4609 | } |
| 4610 | ||
| 5bd4f169 | 4611 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 4612 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 4613 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 4614 | |
| b34976b6 | 4615 | static bfd_boolean |
| 4ce794b7 AM |
4616 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 4617 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 4618 | { |
| 65f38f15 | 4619 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
4620 | Elf_Internal_Shdr *symtab_hdr; |
| 4621 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
| 4622 | const Elf_Internal_Rela *rel; | |
| 4623 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 4624 | asection *sreloc; |
| 1e2f5b6e | 4625 | asection **opd_sym_map; |
| 3a71aa26 | 4626 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 4627 | |
| 1049f94e | 4628 | if (info->relocatable) |
| b34976b6 | 4629 | return TRUE; |
| 5bd4f169 | 4630 | |
| 680a3378 AM |
4631 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 4632 | In particular, any relocs in such sections should not affect GOT | |
| 4633 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 4634 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 4635 | relocs, and there's not much point in propagating relocs to shared | |
| 4636 | libs that the dynamic linker won't relocate. */ | |
| 4637 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 4638 | return TRUE; | |
| 4639 | ||
| 0c8d6e5c | 4640 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 4641 | |
| 65f38f15 | 4642 | htab = ppc_hash_table (info); |
| 3a71aa26 AM |
4643 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 4644 | FALSE, FALSE, TRUE); | |
| 4645 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 4646 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 4647 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 AM |
4648 | |
| 4649 | sym_hashes = elf_sym_hashes (abfd); | |
| 4650 | sym_hashes_end = (sym_hashes | |
| 1e2f5b6e AM |
4651 | + symtab_hdr->sh_size / sizeof (Elf64_External_Sym) |
| 4652 | - symtab_hdr->sh_info); | |
| 5bd4f169 AM |
4653 | |
| 4654 | sreloc = NULL; | |
| 1e2f5b6e AM |
4655 | opd_sym_map = NULL; |
| 4656 | if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0) | |
| 4657 | { | |
| 4658 | /* Garbage collection needs some extra help with .opd sections. | |
| 4659 | We don't want to necessarily keep everything referenced by | |
| 4660 | relocs in .opd, as that would keep all functions. Instead, | |
| 4661 | if we reference an .opd symbol (a function descriptor), we | |
| 4662 | want to keep the function code symbol's section. This is | |
| 4663 | easy for global symbols, but for local syms we need to keep | |
| 74f0fb50 | 4664 | information about the associated function section. */ |
| 1e2f5b6e AM |
4665 | bfd_size_type amt; |
| 4666 | ||
| 74f0fb50 | 4667 | amt = sec->size * sizeof (*opd_sym_map) / 8; |
| 4ce794b7 | 4668 | opd_sym_map = bfd_zalloc (abfd, amt); |
| 1e2f5b6e | 4669 | if (opd_sym_map == NULL) |
| b34976b6 | 4670 | return FALSE; |
| 74f0fb50 | 4671 | ppc64_elf_section_data (sec)->u.opd.func_sec = opd_sym_map; |
| 7c8fe5c4 AM |
4672 | BFD_ASSERT (ppc64_elf_section_data (sec)->sec_type == sec_normal); |
| 4673 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e | 4674 | } |
| 5bd4f169 | 4675 | |
| 82bd7b59 AM |
4676 | if (htab->sfpr == NULL |
| 4677 | && !create_linkage_sections (htab->elf.dynobj, info)) | |
| b34976b6 | 4678 | return FALSE; |
| 82bd7b59 | 4679 | |
| 5bd4f169 AM |
4680 | rel_end = relocs + sec->reloc_count; |
| 4681 | for (rel = relocs; rel < rel_end; rel++) | |
| 4682 | { | |
| 4683 | unsigned long r_symndx; | |
| 4684 | struct elf_link_hash_entry *h; | |
| 04c9666a | 4685 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 4686 | int tls_type; |
| 7c8fe5c4 | 4687 | struct _ppc64_elf_section_data *ppc64_sec; |
| 5bd4f169 AM |
4688 | |
| 4689 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 4690 | if (r_symndx < symtab_hdr->sh_info) | |
| 4691 | h = NULL; | |
| 4692 | else | |
| 973a3492 L |
4693 | { |
| 4694 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| 4695 | while (h->root.type == bfd_link_hash_indirect | |
| 4696 | || h->root.type == bfd_link_hash_warning) | |
| 4697 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 4698 | } | |
| 5bd4f169 | 4699 | |
| 727fc41e | 4700 | tls_type = 0; |
| 4ce794b7 | 4701 | r_type = ELF64_R_TYPE (rel->r_info); |
| 727fc41e AM |
4702 | if (h != NULL && (h == tga || h == dottga)) |
| 4703 | switch (r_type) | |
| 4704 | { | |
| 4705 | default: | |
| 4706 | break; | |
| 4707 | ||
| 4708 | case R_PPC64_REL24: | |
| 4709 | case R_PPC64_REL14: | |
| 4710 | case R_PPC64_REL14_BRTAKEN: | |
| 4711 | case R_PPC64_REL14_BRNTAKEN: | |
| 4712 | case R_PPC64_ADDR24: | |
| 4713 | case R_PPC64_ADDR14: | |
| 4714 | case R_PPC64_ADDR14_BRTAKEN: | |
| 4715 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 4716 | if (rel != relocs | |
| 4717 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 4718 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 4719 | /* We have a new-style __tls_get_addr call with a marker | |
| 4720 | reloc. */ | |
| 4721 | ; | |
| 4722 | else | |
| 4723 | /* Mark this section as having an old-style call. */ | |
| 4724 | sec->has_tls_get_addr_call = 1; | |
| 4725 | break; | |
| 4726 | } | |
| 4727 | ||
| a33d1f77 | 4728 | switch (r_type) |
| 5bd4f169 | 4729 | { |
| 727fc41e AM |
4730 | case R_PPC64_TLSGD: |
| 4731 | case R_PPC64_TLSLD: | |
| 4732 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 4733 | its parameter symbol. */ | |
| 4734 | break; | |
| 4735 | ||
| 411e1bfb AM |
4736 | case R_PPC64_GOT_TLSLD16: |
| 4737 | case R_PPC64_GOT_TLSLD16_LO: | |
| 4738 | case R_PPC64_GOT_TLSLD16_HI: | |
| 4739 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 4740 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
4741 | goto dogottls; |
| 4742 | ||
| 4743 | case R_PPC64_GOT_TLSGD16: | |
| 4744 | case R_PPC64_GOT_TLSGD16_LO: | |
| 4745 | case R_PPC64_GOT_TLSGD16_HI: | |
| 4746 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 4747 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
4748 | goto dogottls; |
| 4749 | ||
| 4750 | case R_PPC64_GOT_TPREL16_DS: | |
| 4751 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 4752 | case R_PPC64_GOT_TPREL16_HI: | |
| 4753 | case R_PPC64_GOT_TPREL16_HA: | |
| 1d483afe | 4754 | if (!info->executable) |
| 411e1bfb AM |
4755 | info->flags |= DF_STATIC_TLS; |
| 4756 | tls_type = TLS_TLS | TLS_TPREL; | |
| 4757 | goto dogottls; | |
| 4758 | ||
| 4759 | case R_PPC64_GOT_DTPREL16_DS: | |
| 4760 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 4761 | case R_PPC64_GOT_DTPREL16_HI: | |
| 4762 | case R_PPC64_GOT_DTPREL16_HA: | |
| 4763 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 4764 | dogottls: | |
| 4765 | sec->has_tls_reloc = 1; | |
| 4766 | /* Fall thru */ | |
| 4767 | ||
| 5bd4f169 | 4768 | case R_PPC64_GOT16: |
| 5bd4f169 | 4769 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
4770 | case R_PPC64_GOT16_HA: |
| 4771 | case R_PPC64_GOT16_HI: | |
| 4772 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 4773 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 4774 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 4775 | sec->has_toc_reloc = 1; |
| e717da7e AM |
4776 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 4777 | && !create_got_section (abfd, info)) | |
| b34976b6 | 4778 | return FALSE; |
| 5bd4f169 AM |
4779 | |
| 4780 | if (h != NULL) | |
| 4781 | { | |
| 411e1bfb AM |
4782 | struct ppc_link_hash_entry *eh; |
| 4783 | struct got_entry *ent; | |
| 65f38f15 | 4784 | |
| 411e1bfb AM |
4785 | eh = (struct ppc_link_hash_entry *) h; |
| 4786 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 4787 | if (ent->addend == rel->r_addend | |
| e717da7e | 4788 | && ent->owner == abfd |
| 411e1bfb AM |
4789 | && ent->tls_type == tls_type) |
| 4790 | break; | |
| 4791 | if (ent == NULL) | |
| 5bd4f169 | 4792 | { |
| 411e1bfb | 4793 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 4794 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 4795 | if (ent == NULL) |
| b34976b6 | 4796 | return FALSE; |
| 411e1bfb AM |
4797 | ent->next = eh->elf.got.glist; |
| 4798 | ent->addend = rel->r_addend; | |
| e717da7e | 4799 | ent->owner = abfd; |
| 411e1bfb AM |
4800 | ent->tls_type = tls_type; |
| 4801 | ent->got.refcount = 0; | |
| 4802 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 4803 | } |
| 411e1bfb | 4804 | ent->got.refcount += 1; |
| e7b938ca | 4805 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 4806 | } |
| 411e1bfb AM |
4807 | else |
| 4808 | /* This is a global offset table entry for a local symbol. */ | |
| 4809 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 4810 | rel->r_addend, tls_type)) | |
| 4811 | return FALSE; | |
| 5bd4f169 AM |
4812 | break; |
| 4813 | ||
| 5bd4f169 | 4814 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
4815 | case R_PPC64_PLT16_HI: |
| 4816 | case R_PPC64_PLT16_LO: | |
| 4817 | case R_PPC64_PLT32: | |
| 4818 | case R_PPC64_PLT64: | |
| 5bd4f169 | 4819 | /* This symbol requires a procedure linkage table entry. We |
| 3fad3c7c AM |
4820 | actually build the entry in adjust_dynamic_symbol, |
| 4821 | because this might be a case of linking PIC code without | |
| 4822 | linking in any dynamic objects, in which case we don't | |
| 4823 | need to generate a procedure linkage table after all. */ | |
| 5bd4f169 AM |
4824 | if (h == NULL) |
| 4825 | { | |
| 4826 | /* It does not make sense to have a procedure linkage | |
| 3fad3c7c | 4827 | table entry for a local symbol. */ |
| 5bd4f169 | 4828 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 4829 | return FALSE; |
| 5bd4f169 | 4830 | } |
| 411e1bfb AM |
4831 | else |
| 4832 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, | |
| 4833 | rel->r_addend)) | |
| 4834 | return FALSE; | |
| 5bd4f169 AM |
4835 | break; |
| 4836 | ||
| 4837 | /* The following relocations don't need to propagate the | |
| 4838 | relocation if linking a shared object since they are | |
| 4839 | section relative. */ | |
| 4840 | case R_PPC64_SECTOFF: | |
| 4841 | case R_PPC64_SECTOFF_LO: | |
| 4842 | case R_PPC64_SECTOFF_HI: | |
| 4843 | case R_PPC64_SECTOFF_HA: | |
| 4844 | case R_PPC64_SECTOFF_DS: | |
| 4845 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
4846 | case R_PPC64_DTPREL16: |
| 4847 | case R_PPC64_DTPREL16_LO: | |
| 4848 | case R_PPC64_DTPREL16_HI: | |
| 4849 | case R_PPC64_DTPREL16_HA: | |
| 4850 | case R_PPC64_DTPREL16_DS: | |
| 4851 | case R_PPC64_DTPREL16_LO_DS: | |
| 4852 | case R_PPC64_DTPREL16_HIGHER: | |
| 4853 | case R_PPC64_DTPREL16_HIGHERA: | |
| 4854 | case R_PPC64_DTPREL16_HIGHEST: | |
| 4855 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
4856 | break; |
| 4857 | ||
| ad8e1ba5 AM |
4858 | /* Nor do these. */ |
| 4859 | case R_PPC64_TOC16: | |
| 4860 | case R_PPC64_TOC16_LO: | |
| 4861 | case R_PPC64_TOC16_HI: | |
| 4862 | case R_PPC64_TOC16_HA: | |
| 4863 | case R_PPC64_TOC16_DS: | |
| 4864 | case R_PPC64_TOC16_LO_DS: | |
| 4c52953f | 4865 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
4866 | break; |
| 4867 | ||
| 5bd4f169 AM |
4868 | /* This relocation describes the C++ object vtable hierarchy. |
| 4869 | Reconstruct it for later use during GC. */ | |
| 4870 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 4871 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 4872 | return FALSE; |
| 5bd4f169 AM |
4873 | break; |
| 4874 | ||
| 4875 | /* This relocation describes which C++ vtable entries are actually | |
| 4876 | used. Record for later use during GC. */ | |
| 4877 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
4878 | BFD_ASSERT (h != NULL); |
| 4879 | if (h != NULL | |
| 4880 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 4881 | return FALSE; |
| 5bd4f169 AM |
4882 | break; |
| 4883 | ||
| 721956f4 AM |
4884 | case R_PPC64_REL14: |
| 4885 | case R_PPC64_REL14_BRTAKEN: | |
| 4886 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
4887 | { |
| 4888 | asection *dest = NULL; | |
| 4889 | ||
| 4890 | /* Heuristic: If jumping outside our section, chances are | |
| 4891 | we are going to need a stub. */ | |
| 4892 | if (h != NULL) | |
| 4893 | { | |
| 4894 | /* If the sym is weak it may be overridden later, so | |
| 4895 | don't assume we know where a weak sym lives. */ | |
| 4896 | if (h->root.type == bfd_link_hash_defined) | |
| 4897 | dest = h->root.u.def.section; | |
| 4898 | } | |
| 4899 | else | |
| 87d72d41 AM |
4900 | { |
| 4901 | Elf_Internal_Sym *isym; | |
| 4902 | ||
| 4903 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 4904 | abfd, r_symndx); | |
| 4905 | if (isym == NULL) | |
| 4906 | return FALSE; | |
| 4907 | ||
| 4908 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 4909 | } | |
| 4910 | ||
| 220c76dd | 4911 | if (dest != sec) |
| 7c8fe5c4 | 4912 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 4913 | } |
| 721956f4 AM |
4914 | /* Fall through. */ |
| 4915 | ||
| 5d1634d7 | 4916 | case R_PPC64_REL24: |
| 8387904d | 4917 | if (h != NULL) |
| 5d1634d7 AM |
4918 | { |
| 4919 | /* We may need a .plt entry if the function this reloc | |
| 4920 | refers to is in a shared lib. */ | |
| 411e1bfb AM |
4921 | if (!update_plt_info (abfd, (struct ppc_link_hash_entry *) h, |
| 4922 | rel->r_addend)) | |
| 4923 | return FALSE; | |
| 3a71aa26 | 4924 | if (h == tga || h == dottga) |
| 411e1bfb | 4925 | sec->has_tls_reloc = 1; |
| 411e1bfb AM |
4926 | } |
| 4927 | break; | |
| 4928 | ||
| 4929 | case R_PPC64_TPREL64: | |
| 4930 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 1d483afe | 4931 | if (!info->executable) |
| 411e1bfb AM |
4932 | info->flags |= DF_STATIC_TLS; |
| 4933 | goto dotlstoc; | |
| 4934 | ||
| 4935 | case R_PPC64_DTPMOD64: | |
| 4936 | if (rel + 1 < rel_end | |
| 4937 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 4938 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 4939 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 4940 | else |
| 951fd09b | 4941 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
4942 | goto dotlstoc; |
| 4943 | ||
| 4944 | case R_PPC64_DTPREL64: | |
| 4945 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 4946 | if (rel != relocs | |
| 4947 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 4948 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 4949 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 4950 | Don't mark with TLS_DTPREL. */ | |
| 4951 | goto dodyn; | |
| 4952 | ||
| 4953 | dotlstoc: | |
| 4954 | sec->has_tls_reloc = 1; | |
| 4955 | if (h != NULL) | |
| 4956 | { | |
| 4957 | struct ppc_link_hash_entry *eh; | |
| 4958 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 4959 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
4960 | } |
| 4961 | else | |
| 4962 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 4963 | rel->r_addend, tls_type)) | |
| 4964 | return FALSE; | |
| 4965 | ||
| 7c8fe5c4 AM |
4966 | ppc64_sec = ppc64_elf_section_data (sec); |
| 4967 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 4968 | { |
| 3a71aa26 AM |
4969 | bfd_size_type amt; |
| 4970 | ||
| e7b938ca | 4971 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
4972 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 4973 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 4974 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 4975 | return FALSE; | |
| 4976 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 4977 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 4978 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 4979 | return FALSE; |
| 7c8fe5c4 AM |
4980 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 4981 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
4982 | } |
| 4983 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
4984 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 4985 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
4986 | |
| 4987 | /* Mark the second slot of a GD or LD entry. | |
| 4988 | -1 to indicate GD and -2 to indicate LD. */ | |
| 4989 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 4990 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 4991 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 4992 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
4993 | goto dodyn; |
| 4994 | ||
| 4995 | case R_PPC64_TPREL16: | |
| 4996 | case R_PPC64_TPREL16_LO: | |
| 4997 | case R_PPC64_TPREL16_HI: | |
| 4998 | case R_PPC64_TPREL16_HA: | |
| 4999 | case R_PPC64_TPREL16_DS: | |
| 5000 | case R_PPC64_TPREL16_LO_DS: | |
| 5001 | case R_PPC64_TPREL16_HIGHER: | |
| 5002 | case R_PPC64_TPREL16_HIGHERA: | |
| 5003 | case R_PPC64_TPREL16_HIGHEST: | |
| 5004 | case R_PPC64_TPREL16_HIGHESTA: | |
| 5005 | if (info->shared) | |
| 5006 | { | |
| 1d483afe AM |
5007 | if (!info->executable) |
| 5008 | info->flags |= DF_STATIC_TLS; | |
| 411e1bfb | 5009 | goto dodyn; |
| 5d1634d7 AM |
5010 | } |
| 5011 | break; | |
| 5012 | ||
| e86ce104 | 5013 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5014 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5015 | && rel + 1 < rel_end |
| 4ce794b7 | 5016 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5017 | { |
| 8387904d AM |
5018 | if (h != NULL) |
| 5019 | { | |
| 5020 | if (h->root.root.string[0] == '.' | |
| 5021 | && h->root.root.string[1] != 0 | |
| 5022 | && get_fdh ((struct ppc_link_hash_entry *) h, htab)) | |
| 5023 | ; | |
| 5024 | else | |
| 5025 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5026 | } | |
| 5027 | else | |
| 5028 | { | |
| 5029 | asection *s; | |
| 87d72d41 | 5030 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5031 | |
| 87d72d41 AM |
5032 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5033 | abfd, r_symndx); | |
| 5034 | if (isym == NULL) | |
| 8387904d | 5035 | return FALSE; |
| 87d72d41 AM |
5036 | |
| 5037 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5038 | if (s != NULL && s != sec) | |
| 3f764659 | 5039 | opd_sym_map[rel->r_offset / 8] = s; |
| 8387904d | 5040 | } |
| 1e2f5b6e | 5041 | } |
| e86ce104 AM |
5042 | /* Fall through. */ |
| 5043 | ||
| 04c9666a | 5044 | case R_PPC64_REL30: |
| 5bd4f169 | 5045 | case R_PPC64_REL32: |
| 04c9666a | 5046 | case R_PPC64_REL64: |
| 65f38f15 AM |
5047 | case R_PPC64_ADDR14: |
| 5048 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5049 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5050 | case R_PPC64_ADDR16: | |
| 5051 | case R_PPC64_ADDR16_DS: | |
| 5052 | case R_PPC64_ADDR16_HA: | |
| 5053 | case R_PPC64_ADDR16_HI: | |
| 5054 | case R_PPC64_ADDR16_HIGHER: | |
| 5055 | case R_PPC64_ADDR16_HIGHERA: | |
| 5056 | case R_PPC64_ADDR16_HIGHEST: | |
| 5057 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5058 | case R_PPC64_ADDR16_LO: | |
| 5059 | case R_PPC64_ADDR16_LO_DS: | |
| 5060 | case R_PPC64_ADDR24: | |
| 65f38f15 | 5061 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5062 | case R_PPC64_UADDR16: |
| 5063 | case R_PPC64_UADDR32: | |
| 5064 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5065 | case R_PPC64_TOC: |
| 81848ca0 AM |
5066 | if (h != NULL && !info->shared) |
| 5067 | /* We may need a copy reloc. */ | |
| f5385ebf | 5068 | h->non_got_ref = 1; |
| 81848ca0 | 5069 | |
| 41bd81ab | 5070 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5071 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5072 | break; |
| e86ce104 | 5073 | |
| 65f38f15 AM |
5074 | /* If we are creating a shared library, and this is a reloc |
| 5075 | against a global symbol, or a non PC relative reloc | |
| 5076 | against a local symbol, then we need to copy the reloc | |
| 5077 | into the shared library. However, if we are linking with | |
| 5078 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5079 | global symbol which is defined in an object we are | |
| 5080 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5081 | this point we have not seen all the input files, so it is | |
| 5082 | possible that DEF_REGULAR is not set now but will be set | |
| 5083 | later (it is never cleared). In case of a weak definition, | |
| 5084 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5085 | a shared library. We account for that possibility below by | |
| f4656909 | 5086 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5087 | table entry. A similar situation occurs when creating |
| 5088 | shared libraries and symbol visibility changes render the | |
| 5089 | symbol local. | |
| 5090 | ||
| 5091 | If on the other hand, we are creating an executable, we | |
| 5092 | may need to keep relocations for symbols satisfied by a | |
| 5093 | dynamic library if we manage to avoid copy relocs for the | |
| 5094 | symbol. */ | |
| 411e1bfb | 5095 | dodyn: |
| 65f38f15 | 5096 | if ((info->shared |
| 1d483afe | 5097 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 AM |
5098 | || (h != NULL |
| 5099 | && (! info->symbolic | |
| 5100 | || h->root.type == bfd_link_hash_defweak | |
| f5385ebf | 5101 | || !h->def_regular)))) |
| f4656909 AM |
5102 | || (ELIMINATE_COPY_RELOCS |
| 5103 | && !info->shared | |
| 65f38f15 AM |
5104 | && h != NULL |
| 5105 | && (h->root.type == bfd_link_hash_defweak | |
| f5385ebf | 5106 | || !h->def_regular))) |
| 5bd4f169 | 5107 | { |
| ec338859 AM |
5108 | struct ppc_dyn_relocs *p; |
| 5109 | struct ppc_dyn_relocs **head; | |
| 5110 | ||
| 65f38f15 AM |
5111 | /* We must copy these reloc types into the output file. |
| 5112 | Create a reloc section in dynobj and make room for | |
| 5113 | this reloc. */ | |
| 5bd4f169 AM |
5114 | if (sreloc == NULL) |
| 5115 | { | |
| 83bac4b0 NC |
5116 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5117 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5118 | |
| 5bd4f169 | 5119 | if (sreloc == NULL) |
| 83bac4b0 | 5120 | return FALSE; |
| 5bd4f169 AM |
5121 | } |
| 5122 | ||
| 65f38f15 AM |
5123 | /* If this is a global symbol, we count the number of |
| 5124 | relocations we need for this symbol. */ | |
| 5125 | if (h != NULL) | |
| 5126 | { | |
| ec338859 | 5127 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 65f38f15 AM |
5128 | } |
| 5129 | else | |
| 5130 | { | |
| ec338859 AM |
5131 | /* Track dynamic relocs needed for local syms too. |
| 5132 | We really need local syms available to do this | |
| 5133 | easily. Oh well. */ | |
| ec338859 | 5134 | asection *s; |
| 6edfbbad | 5135 | void *vpp; |
| 87d72d41 | 5136 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5137 | |
| 87d72d41 AM |
5138 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5139 | abfd, r_symndx); | |
| 5140 | if (isym == NULL) | |
| b34976b6 | 5141 | return FALSE; |
| ec338859 | 5142 | |
| 87d72d41 AM |
5143 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5144 | if (s == NULL) | |
| 5145 | s = sec; | |
| 5146 | ||
| 6edfbbad DJ |
5147 | vpp = &elf_section_data (s)->local_dynrel; |
| 5148 | head = (struct ppc_dyn_relocs **) vpp; | |
| 65f38f15 | 5149 | } |
| ec338859 AM |
5150 | |
| 5151 | p = *head; | |
| 5152 | if (p == NULL || p->sec != sec) | |
| 5153 | { | |
| 4ce794b7 | 5154 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); |
| ec338859 | 5155 | if (p == NULL) |
| b34976b6 | 5156 | return FALSE; |
| ec338859 AM |
5157 | p->next = *head; |
| 5158 | *head = p; | |
| 5159 | p->sec = sec; | |
| 5160 | p->count = 0; | |
| 5161 | p->pc_count = 0; | |
| 5162 | } | |
| 5163 | ||
| 5164 | p->count += 1; | |
| 1d483afe | 5165 | if (!must_be_dyn_reloc (info, r_type)) |
| ec338859 | 5166 | p->pc_count += 1; |
| 65f38f15 | 5167 | } |
| 5bd4f169 | 5168 | break; |
| 65f38f15 AM |
5169 | |
| 5170 | default: | |
| 96e0dda4 | 5171 | break; |
| 5bd4f169 AM |
5172 | } |
| 5173 | } | |
| 5174 | ||
| b34976b6 | 5175 | return TRUE; |
| 5bd4f169 AM |
5176 | } |
| 5177 | ||
| 8387904d AM |
5178 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| 5179 | of the code entry point, and its section. */ | |
| 5180 | ||
| 5181 | static bfd_vma | |
| 5182 | opd_entry_value (asection *opd_sec, | |
| 5183 | bfd_vma offset, | |
| 5184 | asection **code_sec, | |
| 5185 | bfd_vma *code_off) | |
| 5186 | { | |
| 5187 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 5188 | Elf_Internal_Rela *relocs; |
| 8387904d | 5189 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 5190 | bfd_vma val; |
| 8387904d | 5191 | |
| 4b85d634 AM |
5192 | /* No relocs implies we are linking a --just-symbols object. */ |
| 5193 | if (opd_sec->reloc_count == 0) | |
| 5194 | { | |
| 5195 | bfd_vma val; | |
| 5196 | ||
| 5197 | if (!bfd_get_section_contents (opd_bfd, opd_sec, &val, offset, 8)) | |
| 5198 | return (bfd_vma) -1; | |
| 3b36f7e6 | 5199 | |
| 4b85d634 AM |
5200 | if (code_sec != NULL) |
| 5201 | { | |
| 5202 | asection *sec, *likely = NULL; | |
| 5203 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 5204 | if (sec->vma <= val | |
| 5205 | && (sec->flags & SEC_LOAD) != 0 | |
| 5206 | && (sec->flags & SEC_ALLOC) != 0) | |
| 5207 | likely = sec; | |
| 5208 | if (likely != NULL) | |
| 5209 | { | |
| 5210 | *code_sec = likely; | |
| 5211 | if (code_off != NULL) | |
| 5212 | *code_off = val - likely->vma; | |
| 5213 | } | |
| 5214 | } | |
| 5215 | return val; | |
| 5216 | } | |
| 5217 | ||
| 0c8d6e5c | 5218 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 5219 | |
| 8860955f AM |
5220 | relocs = ppc64_elf_tdata (opd_bfd)->opd_relocs; |
| 5221 | if (relocs == NULL) | |
| 5222 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 645ea6a9 | 5223 | |
| 8387904d | 5224 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 5225 | lo = relocs; |
| 8387904d AM |
5226 | BFD_ASSERT (lo != NULL); |
| 5227 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ | |
| 645ea6a9 | 5228 | val = (bfd_vma) -1; |
| 8387904d AM |
5229 | while (lo < hi) |
| 5230 | { | |
| 5231 | look = lo + (hi - lo) / 2; | |
| 5232 | if (look->r_offset < offset) | |
| 5233 | lo = look + 1; | |
| 5234 | else if (look->r_offset > offset) | |
| 5235 | hi = look; | |
| 5236 | else | |
| 5237 | { | |
| 0ffa91dd NC |
5238 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 5239 | ||
| 8387904d AM |
5240 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 5241 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 5242 | { | |
| 5243 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| 8387904d AM |
5244 | asection *sec; |
| 5245 | ||
| 5246 | if (symndx < symtab_hdr->sh_info) | |
| 5247 | { | |
| 5248 | Elf_Internal_Sym *sym; | |
| 5249 | ||
| 5250 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 5251 | if (sym == NULL) | |
| 5252 | { | |
| 5253 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
| 5254 | symtab_hdr->sh_info, | |
| 5255 | 0, NULL, NULL, NULL); | |
| 5256 | if (sym == NULL) | |
| 645ea6a9 | 5257 | break; |
| 8387904d AM |
5258 | symtab_hdr->contents = (bfd_byte *) sym; |
| 5259 | } | |
| 5260 | ||
| 5261 | sym += symndx; | |
| 5262 | val = sym->st_value; | |
| cb33740c | 5263 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 8387904d AM |
5264 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); |
| 5265 | } | |
| 5266 | else | |
| 5267 | { | |
| 5268 | struct elf_link_hash_entry **sym_hashes; | |
| 5269 | struct elf_link_hash_entry *rh; | |
| 5270 | ||
| 5271 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 5272 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 5273 | while (rh->root.type == bfd_link_hash_indirect | |
| 5274 | || rh->root.type == bfd_link_hash_warning) | |
| 5275 | rh = ((struct elf_link_hash_entry *) rh->root.u.i.link); | |
| 5276 | BFD_ASSERT (rh->root.type == bfd_link_hash_defined | |
| 5277 | || rh->root.type == bfd_link_hash_defweak); | |
| 5278 | val = rh->root.u.def.value; | |
| 5279 | sec = rh->root.u.def.section; | |
| 5280 | } | |
| 5281 | val += look->r_addend; | |
| 5282 | if (code_off != NULL) | |
| 5283 | *code_off = val; | |
| 5284 | if (code_sec != NULL) | |
| 5285 | *code_sec = sec; | |
| 5286 | if (sec != NULL && sec->output_section != NULL) | |
| 5287 | val += sec->output_section->vma + sec->output_offset; | |
| 8387904d AM |
5288 | } |
| 5289 | break; | |
| 5290 | } | |
| 5291 | } | |
| 645ea6a9 | 5292 | |
| 645ea6a9 | 5293 | return val; |
| 8387904d AM |
5294 | } |
| 5295 | ||
| 74f0fb50 AM |
5296 | /* Mark all our entry sym sections, both opd and code section. */ |
| 5297 | ||
| 5298 | static void | |
| 5299 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 5300 | { | |
| 5301 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 5302 | struct bfd_sym_chain *sym; | |
| 5303 | ||
| 5304 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) | |
| 5305 | { | |
| 5306 | struct ppc_link_hash_entry *eh; | |
| 5307 | asection *sec; | |
| 5308 | ||
| 5309 | eh = (struct ppc_link_hash_entry *) | |
| 5310 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, FALSE); | |
| 5311 | if (eh == NULL) | |
| 5312 | continue; | |
| 5313 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 5314 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 5315 | continue; | |
| 5316 | ||
| 5317 | if (eh->is_func_descriptor | |
| 5318 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
| 5319 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
| 5320 | { | |
| 5321 | sec = eh->oh->elf.root.u.def.section; | |
| 5322 | sec->flags |= SEC_KEEP; | |
| 5323 | } | |
| 5324 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 5325 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5326 | eh->elf.root.u.def.value, | |
| 5327 | &sec, NULL) != (bfd_vma) -1) | |
| 5328 | sec->flags |= SEC_KEEP; | |
| 5329 | ||
| 5330 | sec = eh->elf.root.u.def.section; | |
| 5331 | sec->flags |= SEC_KEEP; | |
| 5332 | } | |
| 5333 | } | |
| 5334 | ||
| 64d03ab5 AM |
5335 | /* Mark sections containing dynamically referenced symbols. When |
| 5336 | building shared libraries, we must assume that any visible symbol is | |
| 5337 | referenced. */ | |
| 5338 | ||
| 5339 | static bfd_boolean | |
| 5340 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 5341 | { | |
| 5342 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 5343 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| 5344 | ||
| 5345 | if (eh->elf.root.type == bfd_link_hash_warning) | |
| 5346 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 5347 | ||
| 5348 | /* Dynamic linking info is on the func descriptor sym. */ | |
| 5349 | if (eh->oh != NULL | |
| 5350 | && eh->oh->is_func_descriptor | |
| 5351 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
| 5352 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
| 5353 | eh = eh->oh; | |
| 5354 | ||
| 5355 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 5356 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 5357 | && (eh->elf.ref_dynamic | |
| 5358 | || (!info->executable | |
| 5359 | && eh->elf.def_regular | |
| 5360 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL | |
| 5361 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN))) | |
| 5362 | { | |
| 5363 | asection *code_sec; | |
| 5364 | ||
| 5365 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 5366 | ||
| 5367 | /* Function descriptor syms cause the associated | |
| 5368 | function code sym section to be marked. */ | |
| 5369 | if (eh->is_func_descriptor | |
| 5370 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
| 5371 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
| 5372 | eh->oh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 5373 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 5374 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5375 | eh->elf.root.u.def.value, | |
| 5376 | &code_sec, NULL) != (bfd_vma) -1) | |
| 5377 | code_sec->flags |= SEC_KEEP; | |
| 5378 | } | |
| 5379 | ||
| 5380 | return TRUE; | |
| 5381 | } | |
| 5382 | ||
| 5bd4f169 AM |
5383 | /* Return the section that should be marked against GC for a given |
| 5384 | relocation. */ | |
| 5385 | ||
| 5386 | static asection * | |
| 4ce794b7 | 5387 | ppc64_elf_gc_mark_hook (asection *sec, |
| 74f0fb50 | 5388 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 4ce794b7 AM |
5389 | Elf_Internal_Rela *rel, |
| 5390 | struct elf_link_hash_entry *h, | |
| 5391 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 5392 | { |
| ccfa59ea AM |
5393 | asection *rsec; |
| 5394 | ||
| ccfa59ea AM |
5395 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 5396 | function sections, as all functions are referenced in .opd. */ | |
| 5397 | rsec = NULL; | |
| 5398 | if (get_opd_info (sec) != NULL) | |
| 5399 | return rsec; | |
| 1e2f5b6e | 5400 | |
| 5bd4f169 AM |
5401 | if (h != NULL) |
| 5402 | { | |
| 04c9666a | 5403 | enum elf_ppc64_reloc_type r_type; |
| ccfa59ea | 5404 | struct ppc_link_hash_entry *eh; |
| a33d1f77 | 5405 | |
| 4ce794b7 | 5406 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 5407 | switch (r_type) |
| 5bd4f169 AM |
5408 | { |
| 5409 | case R_PPC64_GNU_VTINHERIT: | |
| 5410 | case R_PPC64_GNU_VTENTRY: | |
| 5411 | break; | |
| 5412 | ||
| 5413 | default: | |
| 5414 | switch (h->root.type) | |
| 5415 | { | |
| 5416 | case bfd_link_hash_defined: | |
| 5417 | case bfd_link_hash_defweak: | |
| ccfa59ea | 5418 | eh = (struct ppc_link_hash_entry *) h; |
| c4f68ce3 AM |
5419 | if (eh->oh != NULL |
| 5420 | && eh->oh->is_func_descriptor | |
| 5421 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
| 5422 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
| ccfa59ea | 5423 | eh = eh->oh; |
| 1e2f5b6e AM |
5424 | |
| 5425 | /* Function descriptor syms cause the associated | |
| 5426 | function code sym section to be marked. */ | |
| c4f68ce3 AM |
5427 | if (eh->is_func_descriptor |
| 5428 | && (eh->oh->elf.root.type == bfd_link_hash_defined | |
| 5429 | || eh->oh->elf.root.type == bfd_link_hash_defweak)) | |
| ccfa59ea AM |
5430 | { |
| 5431 | /* They also mark their opd section. */ | |
| 74f0fb50 | 5432 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea AM |
5433 | |
| 5434 | rsec = eh->oh->elf.root.u.def.section; | |
| 5435 | } | |
| 8387904d AM |
5436 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 5437 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 5438 | eh->elf.root.u.def.value, | |
| 5439 | &rsec, NULL) != (bfd_vma) -1) | |
| 74f0fb50 | 5440 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 5441 | else |
| 1e2f5b6e AM |
5442 | rsec = h->root.u.def.section; |
| 5443 | break; | |
| 5bd4f169 AM |
5444 | |
| 5445 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
5446 | rsec = h->root.u.c.p->section; |
| 5447 | break; | |
| 5bd4f169 AM |
5448 | |
| 5449 | default: | |
| 5450 | break; | |
| 5451 | } | |
| 5452 | } | |
| 5453 | } | |
| 5454 | else | |
| 5455 | { | |
| 74f0fb50 | 5456 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
5457 | |
| 5458 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
5459 | opd = get_opd_info (rsec); |
| 5460 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 5461 | { |
| 74f0fb50 | 5462 | rsec->gc_mark = 1; |
| ccfa59ea | 5463 | |
| 74f0fb50 | 5464 | rsec = opd->func_sec[(sym->st_value + rel->r_addend) / 8]; |
| ccfa59ea | 5465 | } |
| 5bd4f169 AM |
5466 | } |
| 5467 | ||
| 1e2f5b6e | 5468 | return rsec; |
| 5bd4f169 AM |
5469 | } |
| 5470 | ||
| 65f38f15 AM |
5471 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 5472 | section being removed. */ | |
| 5bd4f169 | 5473 | |
| b34976b6 | 5474 | static bfd_boolean |
| 4ce794b7 AM |
5475 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 5476 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5477 | { |
| 411e1bfb | 5478 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
5479 | Elf_Internal_Shdr *symtab_hdr; |
| 5480 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 5481 | struct got_entry **local_got_ents; |
| 5bd4f169 | 5482 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 5483 | |
| 7dda2462 TG |
5484 | if (info->relocatable) |
| 5485 | return TRUE; | |
| 5486 | ||
| 680a3378 AM |
5487 | if ((sec->flags & SEC_ALLOC) == 0) |
| 5488 | return TRUE; | |
| 5489 | ||
| ec338859 AM |
5490 | elf_section_data (sec)->local_dynrel = NULL; |
| 5491 | ||
| 411e1bfb | 5492 | htab = ppc_hash_table (info); |
| 0ffa91dd | 5493 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5494 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 5495 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
5496 | |
| 5497 | relend = relocs + sec->reloc_count; | |
| 5498 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
5499 | { |
| 5500 | unsigned long r_symndx; | |
| 04c9666a | 5501 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 5502 | struct elf_link_hash_entry *h = NULL; |
| 411e1bfb | 5503 | char tls_type = 0; |
| 5bd4f169 | 5504 | |
| a33d1f77 | 5505 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 5506 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
5507 | if (r_symndx >= symtab_hdr->sh_info) |
| 5508 | { | |
| 5509 | struct ppc_link_hash_entry *eh; | |
| 5510 | struct ppc_dyn_relocs **pp; | |
| 5511 | struct ppc_dyn_relocs *p; | |
| 5512 | ||
| 5513 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| 3eb128b2 AM |
5514 | while (h->root.type == bfd_link_hash_indirect |
| 5515 | || h->root.type == bfd_link_hash_warning) | |
| 5516 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 58ac9f71 AM |
5517 | eh = (struct ppc_link_hash_entry *) h; |
| 5518 | ||
| 5519 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 5520 | if (p->sec == sec) | |
| 5521 | { | |
| 5522 | /* Everything must go for SEC. */ | |
| 5523 | *pp = p->next; | |
| 5524 | break; | |
| 5525 | } | |
| 5526 | } | |
| 5527 | ||
| a33d1f77 AM |
5528 | switch (r_type) |
| 5529 | { | |
| 411e1bfb AM |
5530 | case R_PPC64_GOT_TLSLD16: |
| 5531 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5532 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5533 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5534 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5535 | goto dogot; |
| 5536 | ||
| 5537 | case R_PPC64_GOT_TLSGD16: | |
| 5538 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5539 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5540 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5541 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5542 | goto dogot; |
| 5543 | ||
| 5544 | case R_PPC64_GOT_TPREL16_DS: | |
| 5545 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5546 | case R_PPC64_GOT_TPREL16_HI: | |
| 5547 | case R_PPC64_GOT_TPREL16_HA: | |
| 5548 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5549 | goto dogot; | |
| 5550 | ||
| 5551 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5552 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5553 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5554 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5555 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5556 | goto dogot; | |
| 5557 | ||
| a33d1f77 AM |
5558 | case R_PPC64_GOT16: |
| 5559 | case R_PPC64_GOT16_DS: | |
| 5560 | case R_PPC64_GOT16_HA: | |
| 5561 | case R_PPC64_GOT16_HI: | |
| 5562 | case R_PPC64_GOT16_LO: | |
| 5563 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
5564 | dogot: |
| 5565 | { | |
| 5566 | struct got_entry *ent; | |
| 5567 | ||
| 58ac9f71 AM |
5568 | if (h != NULL) |
| 5569 | ent = h->got.glist; | |
| 411e1bfb AM |
5570 | else |
| 5571 | ent = local_got_ents[r_symndx]; | |
| 5572 | ||
| 5573 | for (; ent != NULL; ent = ent->next) | |
| 5574 | if (ent->addend == rel->r_addend | |
| e717da7e | 5575 | && ent->owner == abfd |
| 411e1bfb AM |
5576 | && ent->tls_type == tls_type) |
| 5577 | break; | |
| 5578 | if (ent == NULL) | |
| 5579 | abort (); | |
| 5580 | if (ent->got.refcount > 0) | |
| 5581 | ent->got.refcount -= 1; | |
| 5582 | } | |
| a33d1f77 | 5583 | break; |
| 65f38f15 | 5584 | |
| a33d1f77 AM |
5585 | case R_PPC64_PLT16_HA: |
| 5586 | case R_PPC64_PLT16_HI: | |
| 5587 | case R_PPC64_PLT16_LO: | |
| 5588 | case R_PPC64_PLT32: | |
| 5589 | case R_PPC64_PLT64: | |
| 721956f4 AM |
5590 | case R_PPC64_REL14: |
| 5591 | case R_PPC64_REL14_BRNTAKEN: | |
| 5592 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 5593 | case R_PPC64_REL24: |
| 58ac9f71 | 5594 | if (h != NULL) |
| 5d1634d7 | 5595 | { |
| 411e1bfb AM |
5596 | struct plt_entry *ent; |
| 5597 | ||
| 411e1bfb AM |
5598 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 5599 | if (ent->addend == rel->r_addend) | |
| 5600 | break; | |
| 5601 | if (ent == NULL) | |
| 5602 | abort (); | |
| 5603 | if (ent->plt.refcount > 0) | |
| 5604 | ent->plt.refcount -= 1; | |
| 5d1634d7 | 5605 | } |
| e86ce104 | 5606 | break; |
| 5d1634d7 | 5607 | |
| a33d1f77 AM |
5608 | default: |
| 5609 | break; | |
| 5610 | } | |
| 5611 | } | |
| b34976b6 | 5612 | return TRUE; |
| 5bd4f169 AM |
5613 | } |
| 5614 | ||
| deb0e272 AM |
5615 | /* The maximum size of .sfpr. */ |
| 5616 | #define SFPR_MAX (218*4) | |
| 5617 | ||
| 5618 | struct sfpr_def_parms | |
| 5619 | { | |
| 699733f6 AM |
5620 | const char name[12]; |
| 5621 | unsigned char lo, hi; | |
| deb0e272 AM |
5622 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 5623 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 5624 | }; | |
| 5625 | ||
| 5626 | /* Auto-generate _save*, _rest* functions in .sfpr. */ | |
| 5627 | ||
| 5628 | static unsigned int | |
| 5629 | sfpr_define (struct bfd_link_info *info, const struct sfpr_def_parms *parm) | |
| 5630 | { | |
| 5631 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 5632 | unsigned int i; | |
| 5633 | size_t len = strlen (parm->name); | |
| 5634 | bfd_boolean writing = FALSE; | |
| 699733f6 | 5635 | char sym[16]; |
| deb0e272 AM |
5636 | |
| 5637 | memcpy (sym, parm->name, len); | |
| 5638 | sym[len + 2] = 0; | |
| 5639 | ||
| 5640 | for (i = parm->lo; i <= parm->hi; i++) | |
| 5641 | { | |
| 5642 | struct elf_link_hash_entry *h; | |
| 5643 | ||
| 5644 | sym[len + 0] = i / 10 + '0'; | |
| 5645 | sym[len + 1] = i % 10 + '0'; | |
| 5646 | h = elf_link_hash_lookup (&htab->elf, sym, FALSE, FALSE, TRUE); | |
| 5647 | if (h != NULL | |
| f5385ebf | 5648 | && !h->def_regular) |
| deb0e272 AM |
5649 | { |
| 5650 | h->root.type = bfd_link_hash_defined; | |
| 5651 | h->root.u.def.section = htab->sfpr; | |
| 5652 | h->root.u.def.value = htab->sfpr->size; | |
| 5653 | h->type = STT_FUNC; | |
| f5385ebf | 5654 | h->def_regular = 1; |
| deb0e272 AM |
5655 | _bfd_elf_link_hash_hide_symbol (info, h, TRUE); |
| 5656 | writing = TRUE; | |
| 5657 | if (htab->sfpr->contents == NULL) | |
| 5658 | { | |
| 5659 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 5660 | if (htab->sfpr->contents == NULL) | |
| 5661 | return FALSE; | |
| 5662 | } | |
| 5663 | } | |
| 5664 | if (writing) | |
| 5665 | { | |
| 5666 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 5667 | if (i != parm->hi) | |
| 5668 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 5669 | else | |
| 5670 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 5671 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 5672 | } | |
| 5673 | } | |
| 5674 | ||
| 5675 | return TRUE; | |
| 5676 | } | |
| 5677 | ||
| 5678 | static bfd_byte * | |
| 5679 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 5680 | { | |
| 5681 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5682 | return p + 4; | |
| 5683 | } | |
| 5684 | ||
| 5685 | static bfd_byte * | |
| 5686 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5687 | { | |
| 5688 | p = savegpr0 (abfd, p, r); | |
| 5689 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 5690 | p = p + 4; | |
| 5691 | bfd_put_32 (abfd, BLR, p); | |
| 5692 | return p + 4; | |
| 5693 | } | |
| 5694 | ||
| 5695 | static bfd_byte * | |
| 5696 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 5697 | { | |
| 5698 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5699 | return p + 4; | |
| 5700 | } | |
| 5701 | ||
| 5702 | static bfd_byte * | |
| 5703 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5704 | { | |
| 5705 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 5706 | p = p + 4; | |
| 5707 | p = restgpr0 (abfd, p, r); | |
| 5708 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 5709 | p = p + 4; | |
| 5710 | if (r == 29) | |
| 5711 | { | |
| 5712 | p = restgpr0 (abfd, p, 30); | |
| 5713 | p = restgpr0 (abfd, p, 31); | |
| 5714 | } | |
| 5715 | bfd_put_32 (abfd, BLR, p); | |
| 5716 | return p + 4; | |
| 5717 | } | |
| 5718 | ||
| 5719 | static bfd_byte * | |
| 5720 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 5721 | { | |
| 5722 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5723 | return p + 4; | |
| 5724 | } | |
| 5725 | ||
| 5726 | static bfd_byte * | |
| 5727 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5728 | { | |
| 5729 | p = savegpr1 (abfd, p, r); | |
| 5730 | bfd_put_32 (abfd, BLR, p); | |
| 5731 | return p + 4; | |
| 5732 | } | |
| 5733 | ||
| 5734 | static bfd_byte * | |
| 5735 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 5736 | { | |
| 5737 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5738 | return p + 4; | |
| 5739 | } | |
| 5740 | ||
| 5741 | static bfd_byte * | |
| 5742 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5743 | { | |
| 5744 | p = restgpr1 (abfd, p, r); | |
| 5745 | bfd_put_32 (abfd, BLR, p); | |
| 5746 | return p + 4; | |
| 5747 | } | |
| 5748 | ||
| 5749 | static bfd_byte * | |
| 5750 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 5751 | { | |
| 5752 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5753 | return p + 4; | |
| 5754 | } | |
| 5755 | ||
| 5756 | static bfd_byte * | |
| 5757 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5758 | { | |
| 5759 | p = savefpr (abfd, p, r); | |
| 5760 | bfd_put_32 (abfd, STD_R0_0R1 + 16, p); | |
| 5761 | p = p + 4; | |
| 5762 | bfd_put_32 (abfd, BLR, p); | |
| 5763 | return p + 4; | |
| 5764 | } | |
| 5765 | ||
| 5766 | static bfd_byte * | |
| 5767 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 5768 | { | |
| 5769 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 5770 | return p + 4; | |
| 5771 | } | |
| 5772 | ||
| 5773 | static bfd_byte * | |
| 5774 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5775 | { | |
| 5776 | bfd_put_32 (abfd, LD_R0_0R1 + 16, p); | |
| 5777 | p = p + 4; | |
| 5778 | p = restfpr (abfd, p, r); | |
| 5779 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 5780 | p = p + 4; | |
| 5781 | if (r == 29) | |
| 5782 | { | |
| 5783 | p = restfpr (abfd, p, 30); | |
| 5784 | p = restfpr (abfd, p, 31); | |
| 5785 | } | |
| 5786 | bfd_put_32 (abfd, BLR, p); | |
| 5787 | return p + 4; | |
| 5788 | } | |
| 5789 | ||
| 5790 | static bfd_byte * | |
| 5791 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5792 | { | |
| 5793 | p = savefpr (abfd, p, r); | |
| 5794 | bfd_put_32 (abfd, BLR, p); | |
| 5795 | return p + 4; | |
| 5796 | } | |
| 5797 | ||
| 5798 | static bfd_byte * | |
| 5799 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5800 | { | |
| 5801 | p = restfpr (abfd, p, r); | |
| 5802 | bfd_put_32 (abfd, BLR, p); | |
| 5803 | return p + 4; | |
| 5804 | } | |
| 5805 | ||
| 5806 | static bfd_byte * | |
| 5807 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 5808 | { | |
| 5809 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 5810 | p = p + 4; | |
| 5811 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 5812 | return p + 4; | |
| 5813 | } | |
| 5814 | ||
| 5815 | static bfd_byte * | |
| 5816 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5817 | { | |
| 5818 | p = savevr (abfd, p, r); | |
| 5819 | bfd_put_32 (abfd, BLR, p); | |
| 5820 | return p + 4; | |
| 5821 | } | |
| 5822 | ||
| 5823 | static bfd_byte * | |
| 5824 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 5825 | { | |
| 5826 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 5827 | p = p + 4; | |
| 5828 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 5829 | return p + 4; | |
| 5830 | } | |
| 5831 | ||
| 5832 | static bfd_byte * | |
| 5833 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 5834 | { | |
| 5835 | p = restvr (abfd, p, r); | |
| 5836 | bfd_put_32 (abfd, BLR, p); | |
| 5837 | return p + 4; | |
| 5838 | } | |
| 5839 | ||
| e86ce104 AM |
5840 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 5841 | information on function code symbol entries to their corresponding | |
| 5842 | function descriptor symbol entries. */ | |
| deb0e272 | 5843 | |
| b34976b6 | 5844 | static bfd_boolean |
| 4ce794b7 | 5845 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 5846 | { |
| e86ce104 | 5847 | struct bfd_link_info *info; |
| 65f38f15 | 5848 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 5849 | struct plt_entry *ent; |
| 50bc7936 AM |
5850 | struct ppc_link_hash_entry *fh; |
| 5851 | struct ppc_link_hash_entry *fdh; | |
| 5852 | bfd_boolean force_local; | |
| 5bd4f169 | 5853 | |
| 50bc7936 AM |
5854 | fh = (struct ppc_link_hash_entry *) h; |
| 5855 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 5856 | return TRUE; |
| e86ce104 | 5857 | |
| 50bc7936 AM |
5858 | if (fh->elf.root.type == bfd_link_hash_warning) |
| 5859 | fh = (struct ppc_link_hash_entry *) fh->elf.root.u.i.link; | |
| e92d460e | 5860 | |
| 4ce794b7 | 5861 | info = inf; |
| 65f38f15 | 5862 | htab = ppc_hash_table (info); |
| 5bd4f169 | 5863 | |
| c09bdfe5 AM |
5864 | /* Resolve undefined references to dot-symbols as the value |
| 5865 | in the function descriptor, if we have one in a regular object. | |
| 5866 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 5867 | in dynamic objects are handled elsewhere. */ | |
| 5868 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 5869 | && fh->was_undefined | |
| 5870 | && (fh->oh->elf.root.type == bfd_link_hash_defined | |
| 5871 | || fh->oh->elf.root.type == bfd_link_hash_defweak) | |
| 5872 | && get_opd_info (fh->oh->elf.root.u.def.section) != NULL | |
| 5873 | && opd_entry_value (fh->oh->elf.root.u.def.section, | |
| 5874 | fh->oh->elf.root.u.def.value, | |
| 5875 | &fh->elf.root.u.def.section, | |
| 5876 | &fh->elf.root.u.def.value) != (bfd_vma) -1) | |
| 5877 | { | |
| 5878 | fh->elf.root.type = fh->oh->elf.root.type; | |
| f5385ebf | 5879 | fh->elf.forced_local = 1; |
| 2b953679 AM |
5880 | fh->elf.def_regular = fh->oh->elf.def_regular; |
| 5881 | fh->elf.def_dynamic = fh->oh->elf.def_dynamic; | |
| c09bdfe5 AM |
5882 | } |
| 5883 | ||
| e86ce104 AM |
5884 | /* If this is a function code symbol, transfer dynamic linking |
| 5885 | information to the function descriptor symbol. */ | |
| 50bc7936 | 5886 | if (!fh->is_func) |
| b34976b6 | 5887 | return TRUE; |
| e86ce104 | 5888 | |
| 50bc7936 | 5889 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5890 | if (ent->plt.refcount > 0) |
| 5891 | break; | |
| 50bc7936 AM |
5892 | if (ent == NULL |
| 5893 | || fh->elf.root.root.string[0] != '.' | |
| 5894 | || fh->elf.root.root.string[1] == '\0') | |
| 5895 | return TRUE; | |
| 5bd4f169 | 5896 | |
| 50bc7936 AM |
5897 | /* Find the corresponding function descriptor symbol. Create it |
| 5898 | as undefined if necessary. */ | |
| 5bd4f169 | 5899 | |
| 50bc7936 AM |
5900 | fdh = get_fdh (fh, htab); |
| 5901 | if (fdh != NULL) | |
| 5902 | while (fdh->elf.root.type == bfd_link_hash_indirect | |
| 5903 | || fdh->elf.root.type == bfd_link_hash_warning) | |
| 5904 | fdh = (struct ppc_link_hash_entry *) fdh->elf.root.u.i.link; | |
| 5bd4f169 | 5905 | |
| 50bc7936 | 5906 | if (fdh == NULL |
| df131623 | 5907 | && !info->executable |
| 50bc7936 AM |
5908 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 5909 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 5910 | { | |
| 908b32fc | 5911 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
5912 | if (fdh == NULL) |
| 5913 | return FALSE; | |
| 50bc7936 | 5914 | } |
| 648cca2c | 5915 | |
| 908b32fc | 5916 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
5917 | code symbol is strong undefined, make the fake sym the same. |
| 5918 | If the function code symbol is defined, then force the fake | |
| 5919 | descriptor local; We can't support overriding of symbols in a | |
| 5920 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
5921 | |
| 5922 | if (fdh != NULL | |
| 5923 | && fdh->fake | |
| 433817dd | 5924 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 5925 | { |
| 433817dd AM |
5926 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 5927 | { | |
| 5928 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 5929 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 5930 | } | |
| 5931 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 5932 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 5933 | { | |
| 5934 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 5935 | } | |
| 908b32fc AM |
5936 | } |
| 5937 | ||
| 50bc7936 | 5938 | if (fdh != NULL |
| f5385ebf | 5939 | && !fdh->elf.forced_local |
| df131623 | 5940 | && (!info->executable |
| f5385ebf AM |
5941 | || fdh->elf.def_dynamic |
| 5942 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
5943 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 5944 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 5945 | { | |
| 5946 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 5947 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 5948 | return FALSE; |
| f5385ebf AM |
5949 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 5950 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 5951 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 5952 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 5953 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 5954 | { |
| 40d16e0b | 5955 | move_plt_plist (fh, fdh); |
| f5385ebf | 5956 | fdh->elf.needs_plt = 1; |
| e86ce104 | 5957 | } |
| 50bc7936 | 5958 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
5959 | fdh->oh = fh; |
| 5960 | fh->oh = fdh; | |
| e86ce104 AM |
5961 | } |
| 5962 | ||
| 50bc7936 AM |
5963 | /* Now that the info is on the function descriptor, clear the |
| 5964 | function code sym info. Any function code syms for which we | |
| 5965 | don't have a definition in a regular file, we force local. | |
| 5966 | This prevents a shared library from exporting syms that have | |
| 5967 | been imported from another library. Function code syms that | |
| 5968 | are really in the library we must leave global to prevent the | |
| 5969 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
5970 | force_local = (!fh->elf.def_regular |
| 5971 | || fdh == NULL | |
| 5972 | || !fdh->elf.def_regular | |
| 5973 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
5974 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 5975 | ||
| b34976b6 | 5976 | return TRUE; |
| e86ce104 | 5977 | } |
| 40b8271b | 5978 | |
| e86ce104 | 5979 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
5980 | this hook to a) provide some gcc support functions, and b) transfer |
| 5981 | dynamic linking information gathered so far on function code symbol | |
| 5982 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 5983 | |
| b34976b6 | 5984 | static bfd_boolean |
| 4ce794b7 AM |
5985 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 5986 | struct bfd_link_info *info) | |
| e86ce104 AM |
5987 | { |
| 5988 | struct ppc_link_hash_table *htab; | |
| 82bd7b59 | 5989 | unsigned int i; |
| deb0e272 AM |
5990 | const struct sfpr_def_parms funcs[] = |
| 5991 | { | |
| 5992 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 5993 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 5994 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 5995 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 5996 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 5997 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 5998 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 5999 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 6000 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 6001 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 6002 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 6003 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 6004 | }; | |
| e86ce104 AM |
6005 | |
| 6006 | htab = ppc_hash_table (info); | |
| 82bd7b59 AM |
6007 | if (htab->sfpr == NULL) |
| 6008 | /* We don't have any relocs. */ | |
| b34976b6 | 6009 | return TRUE; |
| 82bd7b59 | 6010 | |
| deb0e272 AM |
6011 | /* Provide any missing _save* and _rest* functions. */ |
| 6012 | htab->sfpr->size = 0; | |
| 6013 | for (i = 0; i < sizeof (funcs) / sizeof (funcs[0]); i++) | |
| 6014 | if (!sfpr_define (info, &funcs[i])) | |
| 6015 | return FALSE; | |
| 82bd7b59 | 6016 | |
| 4ce794b7 | 6017 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 6018 | |
| eea6121a | 6019 | if (htab->sfpr->size == 0) |
| 8423293d | 6020 | htab->sfpr->flags |= SEC_EXCLUDE; |
| 82bd7b59 | 6021 | |
| b34976b6 | 6022 | return TRUE; |
| e86ce104 AM |
6023 | } |
| 6024 | ||
| 6025 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
| 6026 | regular object. The current definition is in some section of the | |
| 6027 | dynamic object, but we're not including those sections. We have to | |
| 6028 | change the definition to something the rest of the link can | |
| 6029 | understand. */ | |
| 6030 | ||
| b34976b6 | 6031 | static bfd_boolean |
| 4ce794b7 AM |
6032 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 6033 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
6034 | { |
| 6035 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 6036 | asection *s; |
| e86ce104 AM |
6037 | |
| 6038 | htab = ppc_hash_table (info); | |
| 6039 | ||
| 6040 | /* Deal with function syms. */ | |
| 6041 | if (h->type == STT_FUNC | |
| f5385ebf | 6042 | || h->needs_plt) |
| e86ce104 AM |
6043 | { |
| 6044 | /* Clear procedure linkage table information for any symbol that | |
| 6045 | won't need a .plt entry. */ | |
| 411e1bfb AM |
6046 | struct plt_entry *ent; |
| 6047 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 6048 | if (ent->plt.refcount > 0) | |
| 6049 | break; | |
| 8387904d | 6050 | if (ent == NULL |
| 9c7a29a3 AM |
6051 | || SYMBOL_CALLS_LOCAL (info, h) |
| 6052 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| 6053 | && h->root.type == bfd_link_hash_undefweak)) | |
| 40b8271b | 6054 | { |
| 411e1bfb | 6055 | h->plt.plist = NULL; |
| f5385ebf | 6056 | h->needs_plt = 0; |
| 40b8271b | 6057 | } |
| 5bd4f169 | 6058 | } |
| bbd7ec4a | 6059 | else |
| 411e1bfb | 6060 | h->plt.plist = NULL; |
| 5bd4f169 AM |
6061 | |
| 6062 | /* If this is a weak symbol, and there is a real definition, the | |
| 6063 | processor independent code will have arranged for us to see the | |
| 6064 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 6065 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 6066 | { |
| f6e332e6 AM |
6067 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 6068 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 6069 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 6070 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 6071 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 6072 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 6073 | return TRUE; |
| 5bd4f169 AM |
6074 | } |
| 6075 | ||
| 5bd4f169 AM |
6076 | /* If we are creating a shared library, we must presume that the |
| 6077 | only references to the symbol are via the global offset table. | |
| 6078 | For such cases we need not do anything here; the relocations will | |
| 6079 | be handled correctly by relocate_section. */ | |
| 6080 | if (info->shared) | |
| b34976b6 | 6081 | return TRUE; |
| 5bd4f169 | 6082 | |
| 65f38f15 AM |
6083 | /* If there are no references to this symbol that do not use the |
| 6084 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 6085 | if (!h->non_got_ref) |
| b34976b6 | 6086 | return TRUE; |
| 65f38f15 | 6087 | |
| b186458a JJ |
6088 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 6089 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 6090 | return TRUE; | |
| 6091 | ||
| f4656909 | 6092 | if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 | 6093 | { |
| f4656909 AM |
6094 | struct ppc_link_hash_entry * eh; |
| 6095 | struct ppc_dyn_relocs *p; | |
| 65f38f15 | 6096 | |
| f4656909 AM |
6097 | eh = (struct ppc_link_hash_entry *) h; |
| 6098 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 6099 | { | |
| 6100 | s = p->sec->output_section; | |
| 6101 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 6102 | break; | |
| 6103 | } | |
| 6104 | ||
| 6105 | /* If we didn't find any dynamic relocs in read-only sections, then | |
| 6106 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 6107 | if (p == NULL) | |
| 6108 | { | |
| f5385ebf | 6109 | h->non_got_ref = 0; |
| f4656909 AM |
6110 | return TRUE; |
| 6111 | } | |
| 65f38f15 AM |
6112 | } |
| 6113 | ||
| 5d35169e | 6114 | if (h->plt.plist != NULL) |
| 97b639ba AM |
6115 | { |
| 6116 | /* We should never get here, but unfortunately there are versions | |
| 6117 | of gcc out there that improperly (for this ABI) put initialized | |
| 6118 | function pointers, vtable refs and suchlike in read-only | |
| 6119 | sections. Allow them to proceed, but warn that this might | |
| 6120 | break at runtime. */ | |
| 6121 | (*_bfd_error_handler) | |
| 6122 | (_("copy reloc against `%s' requires lazy plt linking; " | |
| 6123 | "avoid setting LD_BIND_NOW=1 or upgrade gcc"), | |
| 6124 | h->root.root.string); | |
| 6125 | } | |
| 5d35169e AM |
6126 | |
| 6127 | /* This is a reference to a symbol defined by a dynamic object which | |
| 6128 | is not a function. */ | |
| 6129 | ||
| 909272ee AM |
6130 | if (h->size == 0) |
| 6131 | { | |
| 6132 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), | |
| 6133 | h->root.root.string); | |
| 6134 | return TRUE; | |
| 6135 | } | |
| 6136 | ||
| 5bd4f169 AM |
6137 | /* We must allocate the symbol in our .dynbss section, which will |
| 6138 | become part of the .bss section of the executable. There will be | |
| 6139 | an entry for this symbol in the .dynsym section. The dynamic | |
| 6140 | object will contain position independent code, so all references | |
| 6141 | from the dynamic object to this symbol will go through the global | |
| 6142 | offset table. The dynamic linker will use the .dynsym entry to | |
| 6143 | determine the address it must put in the global offset table, so | |
| 6144 | both the dynamic object and the regular object will refer to the | |
| 6145 | same memory location for the variable. */ | |
| 5bd4f169 | 6146 | |
| 04c9666a AM |
6147 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 6148 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
6149 | runtime process image. We need to remember the offset into the |
| 6150 | .rela.bss section we are going to use. */ | |
| 6151 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
| 6152 | { | |
| eea6121a | 6153 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 6154 | h->needs_copy = 1; |
| 5bd4f169 AM |
6155 | } |
| 6156 | ||
| 4ce794b7 | 6157 | s = htab->dynbss; |
| 5bd4f169 | 6158 | |
| 027297b7 | 6159 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 5bd4f169 AM |
6160 | } |
| 6161 | ||
| e86ce104 AM |
6162 | /* If given a function descriptor symbol, hide both the function code |
| 6163 | sym and the descriptor. */ | |
| 6164 | static void | |
| 4ce794b7 AM |
6165 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 6166 | struct elf_link_hash_entry *h, | |
| 6167 | bfd_boolean force_local) | |
| e86ce104 | 6168 | { |
| 34814b9f | 6169 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
6170 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 6171 | ||
| 34814b9f AM |
6172 | eh = (struct ppc_link_hash_entry *) h; |
| 6173 | if (eh->is_func_descriptor) | |
| e86ce104 | 6174 | { |
| 34814b9f | 6175 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 6176 | |
| 721956f4 | 6177 | if (fh == NULL) |
| d1329ca3 AM |
6178 | { |
| 6179 | const char *p, *q; | |
| 6180 | struct ppc_link_hash_table *htab; | |
| 6181 | char save; | |
| 6182 | ||
| 6183 | /* We aren't supposed to use alloca in BFD because on | |
| 6184 | systems which do not have alloca the version in libiberty | |
| 6185 | calls xmalloc, which might cause the program to crash | |
| 6186 | when it runs out of memory. This function doesn't have a | |
| 6187 | return status, so there's no way to gracefully return an | |
| 6188 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
6189 | accessed; It's either a string in an ELF string table, |
| 6190 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 6191 | |
| 34814b9f | 6192 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
6193 | save = *p; |
| 6194 | *(char *) p = '.'; | |
| 6195 | htab = ppc_hash_table (info); | |
| 34814b9f AM |
6196 | fh = (struct ppc_link_hash_entry *) |
| 6197 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6198 | *(char *) p = save; |
| 6199 | ||
| 6200 | /* Unfortunately, if it so happens that the string we were | |
| 6201 | looking for was allocated immediately before this string, | |
| 6202 | then we overwrote the string terminator. That's the only | |
| 6203 | reason the lookup should fail. */ | |
| 6204 | if (fh == NULL) | |
| 6205 | { | |
| 34814b9f AM |
6206 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 6207 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 6208 | --q, --p; |
| 34814b9f AM |
6209 | if (q < eh->elf.root.root.string && *p == '.') |
| 6210 | fh = (struct ppc_link_hash_entry *) | |
| 6211 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
6212 | } |
| 6213 | if (fh != NULL) | |
| 6214 | { | |
| 34814b9f AM |
6215 | eh->oh = fh; |
| 6216 | fh->oh = eh; | |
| d1329ca3 AM |
6217 | } |
| 6218 | } | |
| e86ce104 | 6219 | if (fh != NULL) |
| 34814b9f | 6220 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
6221 | } |
| 6222 | } | |
| 6223 | ||
| 411e1bfb | 6224 | static bfd_boolean |
| 8843416a AM |
6225 | get_sym_h (struct elf_link_hash_entry **hp, |
| 6226 | Elf_Internal_Sym **symp, | |
| 6227 | asection **symsecp, | |
| 6228 | char **tls_maskp, | |
| 6229 | Elf_Internal_Sym **locsymsp, | |
| 6230 | unsigned long r_symndx, | |
| 6231 | bfd *ibfd) | |
| 411e1bfb | 6232 | { |
| 0ffa91dd | 6233 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
6234 | |
| 6235 | if (r_symndx >= symtab_hdr->sh_info) | |
| 6236 | { | |
| 6237 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 6238 | struct elf_link_hash_entry *h; | |
| 6239 | ||
| 6240 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| 6241 | while (h->root.type == bfd_link_hash_indirect | |
| 6242 | || h->root.type == bfd_link_hash_warning) | |
| 6243 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 6244 | ||
| 6245 | if (hp != NULL) | |
| 6246 | *hp = h; | |
| 6247 | ||
| 6248 | if (symp != NULL) | |
| 6249 | *symp = NULL; | |
| 6250 | ||
| 6251 | if (symsecp != NULL) | |
| 6252 | { | |
| 6253 | asection *symsec = NULL; | |
| 6254 | if (h->root.type == bfd_link_hash_defined | |
| 6255 | || h->root.type == bfd_link_hash_defweak) | |
| 6256 | symsec = h->root.u.def.section; | |
| 6257 | *symsecp = symsec; | |
| 6258 | } | |
| 6259 | ||
| e7b938ca | 6260 | if (tls_maskp != NULL) |
| 411e1bfb AM |
6261 | { |
| 6262 | struct ppc_link_hash_entry *eh; | |
| 6263 | ||
| 6264 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 6265 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
6266 | } |
| 6267 | } | |
| 6268 | else | |
| 6269 | { | |
| 6270 | Elf_Internal_Sym *sym; | |
| 6271 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 6272 | ||
| 6273 | if (locsyms == NULL) | |
| 6274 | { | |
| 6275 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 6276 | if (locsyms == NULL) | |
| 6277 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 6278 | symtab_hdr->sh_info, | |
| 6279 | 0, NULL, NULL, NULL); | |
| 6280 | if (locsyms == NULL) | |
| 6281 | return FALSE; | |
| 6282 | *locsymsp = locsyms; | |
| 6283 | } | |
| 6284 | sym = locsyms + r_symndx; | |
| 6285 | ||
| 6286 | if (hp != NULL) | |
| 6287 | *hp = NULL; | |
| 6288 | ||
| 6289 | if (symp != NULL) | |
| 6290 | *symp = sym; | |
| 6291 | ||
| 6292 | if (symsecp != NULL) | |
| cb33740c | 6293 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 6294 | |
| e7b938ca | 6295 | if (tls_maskp != NULL) |
| 411e1bfb AM |
6296 | { |
| 6297 | struct got_entry **lgot_ents; | |
| e7b938ca | 6298 | char *tls_mask; |
| 411e1bfb | 6299 | |
| e7b938ca | 6300 | tls_mask = NULL; |
| 411e1bfb AM |
6301 | lgot_ents = elf_local_got_ents (ibfd); |
| 6302 | if (lgot_ents != NULL) | |
| 6303 | { | |
| e7b938ca AM |
6304 | char *lgot_masks = (char *) (lgot_ents + symtab_hdr->sh_info); |
| 6305 | tls_mask = &lgot_masks[r_symndx]; | |
| 411e1bfb | 6306 | } |
| e7b938ca | 6307 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
6308 | } |
| 6309 | } | |
| 6310 | return TRUE; | |
| 6311 | } | |
| 6312 | ||
| e7b938ca | 6313 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 6314 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 6315 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
6316 | |
| 6317 | static int | |
| 3a71aa26 AM |
6318 | get_tls_mask (char **tls_maskp, |
| 6319 | unsigned long *toc_symndx, | |
| 6320 | bfd_vma *toc_addend, | |
| 0d4792f7 | 6321 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
6322 | const Elf_Internal_Rela *rel, |
| 6323 | bfd *ibfd) | |
| 411e1bfb AM |
6324 | { |
| 6325 | unsigned long r_symndx; | |
| 0d4792f7 | 6326 | int next_r; |
| 411e1bfb AM |
6327 | struct elf_link_hash_entry *h; |
| 6328 | Elf_Internal_Sym *sym; | |
| 6329 | asection *sec; | |
| 6330 | bfd_vma off; | |
| 6331 | ||
| 6332 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 6333 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 6334 | return 0; |
| 411e1bfb | 6335 | |
| e7b938ca | 6336 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 6337 | || sec == NULL |
| 7c8fe5c4 | 6338 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 6339 | return 1; |
| 411e1bfb AM |
6340 | |
| 6341 | /* Look inside a TOC section too. */ | |
| 6342 | if (h != NULL) | |
| 6343 | { | |
| 6344 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 6345 | off = h->root.u.def.value; | |
| 6346 | } | |
| 6347 | else | |
| 6348 | off = sym->st_value; | |
| 6349 | off += rel->r_addend; | |
| 6350 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
6351 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 6352 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
6353 | if (toc_symndx != NULL) |
| 6354 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
6355 | if (toc_addend != NULL) |
| 6356 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 6357 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 6358 | return 0; | |
| 0d4792f7 AM |
6359 | if ((h == NULL |
| 6360 | || ((h->root.type == bfd_link_hash_defined | |
| 6361 | || h->root.type == bfd_link_hash_defweak) | |
| f5385ebf | 6362 | && !h->def_dynamic)) |
| 0d4792f7 AM |
6363 | && (next_r == -1 || next_r == -2)) |
| 6364 | return 1 - next_r; | |
| 951fd09b | 6365 | return 1; |
| 411e1bfb AM |
6366 | } |
| 6367 | ||
| 754021d0 | 6368 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 6369 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
6370 | |
| 6371 | static bfd_boolean | |
| 6372 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 6373 | { | |
| 6374 | struct ppc_link_hash_entry *eh; | |
| 6375 | asection *sym_sec; | |
| 74f0fb50 | 6376 | struct _opd_sec_data *opd; |
| 754021d0 AM |
6377 | |
| 6378 | if (h->root.type == bfd_link_hash_indirect) | |
| 6379 | return TRUE; | |
| 6380 | ||
| 6381 | if (h->root.type == bfd_link_hash_warning) | |
| 6382 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 6383 | ||
| 6384 | if (h->root.type != bfd_link_hash_defined | |
| 6385 | && h->root.type != bfd_link_hash_defweak) | |
| 6386 | return TRUE; | |
| 6387 | ||
| 6388 | eh = (struct ppc_link_hash_entry *) h; | |
| 6389 | if (eh->adjust_done) | |
| 6390 | return TRUE; | |
| 6391 | ||
| 6392 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
6393 | opd = get_opd_info (sym_sec); |
| 6394 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 6395 | { |
| 74f0fb50 | 6396 | long adjust = opd->adjust[eh->elf.root.u.def.value / 8]; |
| 4025353c AM |
6397 | if (adjust == -1) |
| 6398 | { | |
| 6399 | /* This entry has been deleted. */ | |
| b3fac117 | 6400 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
6401 | if (dsec == NULL) |
| 6402 | { | |
| 6403 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| 6404 | if (elf_discarded_section (dsec)) | |
| 6405 | { | |
| b3fac117 | 6406 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
6407 | break; |
| 6408 | } | |
| 6409 | } | |
| 4025353c | 6410 | eh->elf.root.u.def.value = 0; |
| 81688140 | 6411 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
6412 | } |
| 6413 | else | |
| 6414 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
6415 | eh->adjust_done = 1; |
| 6416 | } | |
| 6417 | return TRUE; | |
| 6418 | } | |
| 6419 | ||
| 8c1d1bb8 AM |
6420 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 6421 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC | |
| 6422 | have already been determined. */ | |
| 6423 | ||
| 6424 | static bfd_boolean | |
| 6425 | dec_dynrel_count (bfd_vma r_info, | |
| 6426 | asection *sec, | |
| 6427 | struct bfd_link_info *info, | |
| 6428 | Elf_Internal_Sym **local_syms, | |
| 6429 | struct elf_link_hash_entry *h, | |
| 6430 | asection *sym_sec) | |
| 6431 | { | |
| 6432 | enum elf_ppc64_reloc_type r_type; | |
| 6433 | struct ppc_dyn_relocs *p; | |
| 6434 | struct ppc_dyn_relocs **pp; | |
| 6435 | ||
| 6436 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 6437 | should be kept in sync with the code in check_relocs. */ | |
| 6438 | r_type = ELF64_R_TYPE (r_info); | |
| 6439 | switch (r_type) | |
| 6440 | { | |
| 6441 | default: | |
| 6442 | return TRUE; | |
| 6443 | ||
| 6444 | case R_PPC64_TPREL16: | |
| 6445 | case R_PPC64_TPREL16_LO: | |
| 6446 | case R_PPC64_TPREL16_HI: | |
| 6447 | case R_PPC64_TPREL16_HA: | |
| 6448 | case R_PPC64_TPREL16_DS: | |
| 6449 | case R_PPC64_TPREL16_LO_DS: | |
| 6450 | case R_PPC64_TPREL16_HIGHER: | |
| 6451 | case R_PPC64_TPREL16_HIGHERA: | |
| 6452 | case R_PPC64_TPREL16_HIGHEST: | |
| 6453 | case R_PPC64_TPREL16_HIGHESTA: | |
| 6454 | if (!info->shared) | |
| 6455 | return TRUE; | |
| 6456 | ||
| 6457 | case R_PPC64_TPREL64: | |
| 6458 | case R_PPC64_DTPMOD64: | |
| 6459 | case R_PPC64_DTPREL64: | |
| 6460 | case R_PPC64_ADDR64: | |
| 6461 | case R_PPC64_REL30: | |
| 6462 | case R_PPC64_REL32: | |
| 6463 | case R_PPC64_REL64: | |
| 6464 | case R_PPC64_ADDR14: | |
| 6465 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 6466 | case R_PPC64_ADDR14_BRTAKEN: | |
| 6467 | case R_PPC64_ADDR16: | |
| 6468 | case R_PPC64_ADDR16_DS: | |
| 6469 | case R_PPC64_ADDR16_HA: | |
| 6470 | case R_PPC64_ADDR16_HI: | |
| 6471 | case R_PPC64_ADDR16_HIGHER: | |
| 6472 | case R_PPC64_ADDR16_HIGHERA: | |
| 6473 | case R_PPC64_ADDR16_HIGHEST: | |
| 6474 | case R_PPC64_ADDR16_HIGHESTA: | |
| 6475 | case R_PPC64_ADDR16_LO: | |
| 6476 | case R_PPC64_ADDR16_LO_DS: | |
| 6477 | case R_PPC64_ADDR24: | |
| 6478 | case R_PPC64_ADDR32: | |
| 6479 | case R_PPC64_UADDR16: | |
| 6480 | case R_PPC64_UADDR32: | |
| 6481 | case R_PPC64_UADDR64: | |
| 6482 | case R_PPC64_TOC: | |
| 6483 | break; | |
| 6484 | } | |
| 6485 | ||
| 6486 | if (local_syms != NULL) | |
| 6487 | { | |
| 6488 | unsigned long r_symndx; | |
| 6489 | Elf_Internal_Sym *sym; | |
| 6490 | bfd *ibfd = sec->owner; | |
| 6491 | ||
| 6492 | r_symndx = ELF64_R_SYM (r_info); | |
| 6493 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 6494 | return FALSE; | |
| 6495 | } | |
| 6496 | ||
| 6497 | if ((info->shared | |
| 1d483afe | 6498 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 AM |
6499 | || (h != NULL |
| 6500 | && (!info->symbolic | |
| 6501 | || h->root.type == bfd_link_hash_defweak | |
| 6502 | || !h->def_regular)))) | |
| 6503 | || (ELIMINATE_COPY_RELOCS | |
| 6504 | && !info->shared | |
| 6505 | && h != NULL | |
| 6506 | && (h->root.type == bfd_link_hash_defweak | |
| 6507 | || !h->def_regular))) | |
| 6508 | ; | |
| 6509 | else | |
| 6510 | return TRUE; | |
| 6511 | ||
| 6512 | if (h != NULL) | |
| 6513 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 8c1d1bb8 | 6514 | else |
| 6edfbbad | 6515 | { |
| 60124e18 AM |
6516 | if (sym_sec != NULL) |
| 6517 | { | |
| 6518 | void *vpp = &elf_section_data (sym_sec)->local_dynrel; | |
| 6519 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 6520 | } | |
| 6521 | else | |
| 6522 | { | |
| 6523 | void *vpp = &elf_section_data (sec)->local_dynrel; | |
| 6524 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 6525 | } | |
| 6526 | ||
| 6527 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 6528 | with local syms for a given section. Don't report a dynreloc | |
| 6529 | miscount. */ | |
| 6530 | if (*pp == NULL) | |
| 6531 | return TRUE; | |
| 6edfbbad | 6532 | } |
| 8c1d1bb8 AM |
6533 | |
| 6534 | while ((p = *pp) != NULL) | |
| 6535 | { | |
| 6536 | if (p->sec == sec) | |
| 6537 | { | |
| 1d483afe | 6538 | if (!must_be_dyn_reloc (info, r_type)) |
| 8c1d1bb8 AM |
6539 | p->pc_count -= 1; |
| 6540 | p->count -= 1; | |
| 6541 | if (p->count == 0) | |
| 6542 | *pp = p->next; | |
| 6543 | return TRUE; | |
| 6544 | } | |
| 6545 | pp = &p->next; | |
| 6546 | } | |
| 6547 | ||
| 6548 | (*_bfd_error_handler) (_("dynreloc miscount for %B, section %A"), | |
| 6549 | sec->owner, sec); | |
| 6550 | bfd_set_error (bfd_error_bad_value); | |
| 6551 | return FALSE; | |
| 6552 | } | |
| 6553 | ||
| 754021d0 AM |
6554 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 6555 | only remove those associated with functions in discarded link-once | |
| 6556 | sections, or weakly defined functions that have been overridden. It | |
| 6557 | would be possible to remove many more entries for statically linked | |
| 6558 | applications. */ | |
| 6559 | ||
| b34976b6 | 6560 | bfd_boolean |
| 3f764659 JJ |
6561 | ppc64_elf_edit_opd (bfd *obfd, struct bfd_link_info *info, |
| 6562 | bfd_boolean non_overlapping) | |
| 1e2f5b6e AM |
6563 | { |
| 6564 | bfd *ibfd; | |
| 754021d0 | 6565 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 6566 | asection *need_pad = NULL; |
| 1e2f5b6e | 6567 | |
| 411e1bfb | 6568 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 1e2f5b6e AM |
6569 | { |
| 6570 | asection *sec; | |
| 6571 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 6572 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 6573 | Elf_Internal_Sym *local_syms; |
| 1e2f5b6e AM |
6574 | struct elf_link_hash_entry **sym_hashes; |
| 6575 | bfd_vma offset; | |
| 74f0fb50 | 6576 | struct _opd_sec_data *opd; |
| 3f764659 JJ |
6577 | bfd_boolean need_edit, add_aux_fields; |
| 6578 | bfd_size_type cnt_16b = 0; | |
| 1e2f5b6e AM |
6579 | |
| 6580 | sec = bfd_get_section_by_name (ibfd, ".opd"); | |
| 46de2a7c | 6581 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
6582 | continue; |
| 6583 | ||
| 4b85d634 AM |
6584 | if (sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS) |
| 6585 | continue; | |
| 6586 | ||
| 1e2f5b6e AM |
6587 | if (sec->output_section == bfd_abs_section_ptr) |
| 6588 | continue; | |
| 6589 | ||
| 6590 | /* Look through the section relocs. */ | |
| 6591 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 6592 | continue; | |
| 6593 | ||
| 6cdc0ccc | 6594 | local_syms = NULL; |
| 0ffa91dd | 6595 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
6596 | sym_hashes = elf_sym_hashes (ibfd); |
| 6597 | ||
| 6598 | /* Read the relocations. */ | |
| 4ce794b7 | 6599 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 6600 | info->keep_memory); |
| 1e2f5b6e | 6601 | if (relstart == NULL) |
| b34976b6 | 6602 | return FALSE; |
| 1e2f5b6e AM |
6603 | |
| 6604 | /* First run through the relocs to check they are sane, and to | |
| 6605 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 6606 | need_edit = FALSE; |
| 3f764659 | 6607 | need_pad = sec; |
| 1e2f5b6e AM |
6608 | offset = 0; |
| 6609 | relend = relstart + sec->reloc_count; | |
| 50bc7936 | 6610 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 6611 | { |
| 04c9666a | 6612 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
6613 | unsigned long r_symndx; |
| 6614 | asection *sym_sec; | |
| 6615 | struct elf_link_hash_entry *h; | |
| 6616 | Elf_Internal_Sym *sym; | |
| 6617 | ||
| 3f764659 | 6618 | /* .opd contains a regular array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
6619 | only interested in the reloc pointing to a function entry |
| 6620 | point. */ | |
| 50bc7936 AM |
6621 | if (rel->r_offset != offset |
| 6622 | || rel + 1 >= relend | |
| 6623 | || (rel + 1)->r_offset != offset + 8) | |
| 1e2f5b6e AM |
6624 | { |
| 6625 | /* If someone messes with .opd alignment then after a | |
| 6626 | "ld -r" we might have padding in the middle of .opd. | |
| 6627 | Also, there's nothing to prevent someone putting | |
| 6628 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 6629 | optimization for them! */ |
| 3f764659 | 6630 | broken_opd: |
| 1e2f5b6e | 6631 | (*_bfd_error_handler) |
| d003868e | 6632 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| b34976b6 | 6633 | need_edit = FALSE; |
| 1e2f5b6e AM |
6634 | break; |
| 6635 | } | |
| 6636 | ||
| 50bc7936 AM |
6637 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 6638 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 6639 | { | |
| 6640 | (*_bfd_error_handler) | |
| d003868e AM |
6641 | (_("%B: unexpected reloc type %u in .opd section"), |
| 6642 | ibfd, r_type); | |
| 50bc7936 AM |
6643 | need_edit = FALSE; |
| 6644 | break; | |
| 6645 | } | |
| 6646 | ||
| 1e2f5b6e | 6647 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
6648 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 6649 | r_symndx, ibfd)) | |
| 50bc7936 | 6650 | goto error_ret; |
| 1e2f5b6e AM |
6651 | |
| 6652 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 6653 | { | |
| 411e1bfb AM |
6654 | const char *sym_name; |
| 6655 | if (h != NULL) | |
| 6656 | sym_name = h->root.root.string; | |
| 6657 | else | |
| 26c61ae5 L |
6658 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 6659 | sym_sec); | |
| 411e1bfb | 6660 | |
| 1e2f5b6e | 6661 | (*_bfd_error_handler) |
| d003868e AM |
6662 | (_("%B: undefined sym `%s' in .opd section"), |
| 6663 | ibfd, sym_name); | |
| b34976b6 | 6664 | need_edit = FALSE; |
| 1e2f5b6e AM |
6665 | break; |
| 6666 | } | |
| 6667 | ||
| 51020317 AM |
6668 | /* opd entries are always for functions defined in the |
| 6669 | current input bfd. If the symbol isn't defined in the | |
| 6670 | input bfd, then we won't be using the function in this | |
| 6671 | bfd; It must be defined in a linkonce section in another | |
| 6672 | bfd, or is weak. It's also possible that we are | |
| 6673 | discarding the function due to a linker script /DISCARD/, | |
| 6674 | which we test for via the output_section. */ | |
| 6675 | if (sym_sec->owner != ibfd | |
| 6676 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 6677 | need_edit = TRUE; |
| 1e2f5b6e | 6678 | |
| 50bc7936 | 6679 | rel += 2; |
| 3f764659 JJ |
6680 | if (rel == relend |
| 6681 | || (rel + 1 == relend && rel->r_offset == offset + 16)) | |
| 6682 | { | |
| 6683 | if (sec->size == offset + 24) | |
| 6684 | { | |
| 6685 | need_pad = NULL; | |
| 6686 | break; | |
| 6687 | } | |
| 6688 | if (rel == relend && sec->size == offset + 16) | |
| 6689 | { | |
| 6690 | cnt_16b++; | |
| 6691 | break; | |
| 6692 | } | |
| 6693 | goto broken_opd; | |
| 6694 | } | |
| 6695 | ||
| 6696 | if (rel->r_offset == offset + 24) | |
| 6697 | offset += 24; | |
| 6698 | else if (rel->r_offset != offset + 16) | |
| 6699 | goto broken_opd; | |
| 6700 | else if (rel + 1 < relend | |
| 6701 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 6702 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 6703 | { | |
| 6704 | offset += 16; | |
| 6705 | cnt_16b++; | |
| 6706 | } | |
| 6707 | else if (rel + 2 < relend | |
| 6708 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_ADDR64 | |
| 6709 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC) | |
| 6710 | { | |
| 6711 | offset += 24; | |
| 6712 | rel += 1; | |
| 6713 | } | |
| 6714 | else | |
| 6715 | goto broken_opd; | |
| 1e2f5b6e AM |
6716 | } |
| 6717 | ||
| 3f764659 JJ |
6718 | add_aux_fields = non_overlapping && cnt_16b > 0; |
| 6719 | ||
| 6720 | if (need_edit || add_aux_fields) | |
| 1e2f5b6e AM |
6721 | { |
| 6722 | Elf_Internal_Rela *write_rel; | |
| 6723 | bfd_byte *rptr, *wptr; | |
| 983bddc8 | 6724 | bfd_byte *new_contents; |
| b34976b6 | 6725 | bfd_boolean skip; |
| 3f764659 | 6726 | long opd_ent_size; |
| 74f0fb50 AM |
6727 | bfd_size_type amt; |
| 6728 | ||
| 983bddc8 | 6729 | new_contents = NULL; |
| 74f0fb50 AM |
6730 | amt = sec->size * sizeof (long) / 8; |
| 6731 | opd = &ppc64_elf_section_data (sec)->u.opd; | |
| 6732 | opd->adjust = bfd_zalloc (obfd, amt); | |
| 6733 | if (opd->adjust == NULL) | |
| 6734 | return FALSE; | |
| 6735 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
6736 | |
| 6737 | /* This seems a waste of time as input .opd sections are all | |
| 6738 | zeros as generated by gcc, but I suppose there's no reason | |
| 6739 | this will always be so. We might start putting something in | |
| 6740 | the third word of .opd entries. */ | |
| 6741 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 6742 | { | |
| eea6121a AM |
6743 | bfd_byte *loc; |
| 6744 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 6745 | { |
| eea6121a AM |
6746 | if (loc != NULL) |
| 6747 | free (loc); | |
| 50bc7936 | 6748 | error_ret: |
| 6cdc0ccc AM |
6749 | if (local_syms != NULL |
| 6750 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 6751 | free (local_syms); | |
| 6cdc0ccc AM |
6752 | if (elf_section_data (sec)->relocs != relstart) |
| 6753 | free (relstart); | |
| b34976b6 | 6754 | return FALSE; |
| 6cdc0ccc | 6755 | } |
| 1e2f5b6e AM |
6756 | sec->contents = loc; |
| 6757 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 6758 | } | |
| 6759 | ||
| 6760 | elf_section_data (sec)->relocs = relstart; | |
| 6761 | ||
| 3f764659 | 6762 | new_contents = sec->contents; |
| 3f764659 JJ |
6763 | if (add_aux_fields) |
| 6764 | { | |
| 6765 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 6766 | if (new_contents == NULL) | |
| 6767 | return FALSE; | |
| 6768 | need_pad = FALSE; | |
| 3f764659 | 6769 | } |
| b4f4e59f AM |
6770 | wptr = new_contents; |
| 6771 | rptr = sec->contents; | |
| 3f764659 | 6772 | |
| 1e2f5b6e | 6773 | write_rel = relstart; |
| b34976b6 | 6774 | skip = FALSE; |
| 1e2f5b6e | 6775 | offset = 0; |
| 3f764659 | 6776 | opd_ent_size = 0; |
| 1e2f5b6e AM |
6777 | for (rel = relstart; rel < relend; rel++) |
| 6778 | { | |
| 50bc7936 AM |
6779 | unsigned long r_symndx; |
| 6780 | asection *sym_sec; | |
| 6781 | struct elf_link_hash_entry *h; | |
| 6782 | Elf_Internal_Sym *sym; | |
| 6783 | ||
| 6784 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 6785 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 6786 | r_symndx, ibfd)) |
| 50bc7936 AM |
6787 | goto error_ret; |
| 6788 | ||
| 1e2f5b6e AM |
6789 | if (rel->r_offset == offset) |
| 6790 | { | |
| 50bc7936 | 6791 | struct ppc_link_hash_entry *fdh = NULL; |
| 3f764659 JJ |
6792 | |
| 6793 | /* See if the .opd entry is full 24 byte or | |
| 6794 | 16 byte (with fd_aux entry overlapped with next | |
| 6795 | fd_func). */ | |
| 6796 | opd_ent_size = 24; | |
| 6797 | if ((rel + 2 == relend && sec->size == offset + 16) | |
| 6798 | || (rel + 3 < relend | |
| 6799 | && rel[2].r_offset == offset + 16 | |
| 6800 | && rel[3].r_offset == offset + 24 | |
| 6801 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_ADDR64 | |
| 6802 | && ELF64_R_TYPE (rel[3].r_info) == R_PPC64_TOC)) | |
| 6803 | opd_ent_size = 16; | |
| 6804 | ||
| 4025353c AM |
6805 | if (h != NULL |
| 6806 | && h->root.root.string[0] == '.') | |
| c4f68ce3 AM |
6807 | { |
| 6808 | fdh = get_fdh ((struct ppc_link_hash_entry *) h, | |
| 6809 | ppc_hash_table (info)); | |
| 6810 | if (fdh != NULL | |
| 6811 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 6812 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 6813 | fdh = NULL; | |
| 6814 | } | |
| 1e2f5b6e | 6815 | |
| 51020317 AM |
6816 | skip = (sym_sec->owner != ibfd |
| 6817 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| a4aa0fb7 AM |
6818 | if (skip) |
| 6819 | { | |
| 4025353c | 6820 | if (fdh != NULL && sym_sec->owner == ibfd) |
| a4aa0fb7 AM |
6821 | { |
| 6822 | /* Arrange for the function descriptor sym | |
| 6823 | to be dropped. */ | |
| d6fe2dc1 AM |
6824 | fdh->elf.root.u.def.value = 0; |
| 6825 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 6826 | } |
| 74f0fb50 | 6827 | opd->adjust[rel->r_offset / 8] = -1; |
| a4aa0fb7 AM |
6828 | } |
| 6829 | else | |
| 1e2f5b6e AM |
6830 | { |
| 6831 | /* We'll be keeping this opd entry. */ | |
| 6832 | ||
| 4025353c | 6833 | if (fdh != NULL) |
| 1e2f5b6e | 6834 | { |
| 754021d0 AM |
6835 | /* Redefine the function descriptor symbol to |
| 6836 | this location in the opd section. It is | |
| 6837 | necessary to update the value here rather | |
| 6838 | than using an array of adjustments as we do | |
| 6839 | for local symbols, because various places | |
| 6840 | in the generic ELF code use the value | |
| 6841 | stored in u.def.value. */ | |
| 3f764659 | 6842 | fdh->elf.root.u.def.value = wptr - new_contents; |
| 754021d0 | 6843 | fdh->adjust_done = 1; |
| 1e2f5b6e | 6844 | } |
| 754021d0 AM |
6845 | |
| 6846 | /* Local syms are a bit tricky. We could | |
| 6847 | tweak them as they can be cached, but | |
| 6848 | we'd need to look through the local syms | |
| 6849 | for the function descriptor sym which we | |
| 6850 | don't have at the moment. So keep an | |
| 6851 | array of adjustments. */ | |
| 74f0fb50 | 6852 | opd->adjust[rel->r_offset / 8] |
| 3f764659 | 6853 | = (wptr - new_contents) - (rptr - sec->contents); |
| 1e2f5b6e AM |
6854 | |
| 6855 | if (wptr != rptr) | |
| 3f764659 JJ |
6856 | memcpy (wptr, rptr, opd_ent_size); |
| 6857 | wptr += opd_ent_size; | |
| 6858 | if (add_aux_fields && opd_ent_size == 16) | |
| 6859 | { | |
| 6860 | memset (wptr, '\0', 8); | |
| 6861 | wptr += 8; | |
| 6862 | } | |
| 1e2f5b6e | 6863 | } |
| 3f764659 JJ |
6864 | rptr += opd_ent_size; |
| 6865 | offset += opd_ent_size; | |
| 1e2f5b6e AM |
6866 | } |
| 6867 | ||
| 50bc7936 AM |
6868 | if (skip) |
| 6869 | { | |
| 60124e18 AM |
6870 | if (!NO_OPD_RELOCS |
| 6871 | && !info->relocatable | |
| 18d944df AM |
6872 | && !dec_dynrel_count (rel->r_info, sec, info, |
| 6873 | NULL, h, sym_sec)) | |
| 8c1d1bb8 | 6874 | goto error_ret; |
| 50bc7936 AM |
6875 | } |
| 6876 | else | |
| 1e2f5b6e | 6877 | { |
| 50bc7936 AM |
6878 | /* We need to adjust any reloc offsets to point to the |
| 6879 | new opd entries. While we're at it, we may as well | |
| 6880 | remove redundant relocs. */ | |
| 74f0fb50 | 6881 | rel->r_offset += opd->adjust[(offset - opd_ent_size) / 8]; |
| 1e2f5b6e AM |
6882 | if (write_rel != rel) |
| 6883 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 6884 | ++write_rel; | |
| 6885 | } | |
| 6886 | } | |
| 6887 | ||
| 3f764659 | 6888 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 6889 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
6890 | if (add_aux_fields) |
| 6891 | { | |
| 6892 | free (sec->contents); | |
| 6893 | sec->contents = new_contents; | |
| 6894 | } | |
| 6895 | ||
| 05bf9422 | 6896 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 AM |
6897 | elf_bfd_final_link if we are emitting relocs. */ |
| 6898 | elf_section_data (sec)->rel_hdr.sh_size | |
| 6899 | = sec->reloc_count * elf_section_data (sec)->rel_hdr.sh_entsize; | |
| 6900 | BFD_ASSERT (elf_section_data (sec)->rel_hdr2 == NULL); | |
| 754021d0 | 6901 | some_edited = TRUE; |
| 1e2f5b6e | 6902 | } |
| 6cdc0ccc | 6903 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 6904 | free (relstart); |
| 6cdc0ccc | 6905 | |
| 411e1bfb AM |
6906 | if (local_syms != NULL |
| 6907 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 6908 | { | |
| 6909 | if (!info->keep_memory) | |
| 6910 | free (local_syms); | |
| 6911 | else | |
| 6912 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 6913 | } | |
| 6914 | } | |
| 6915 | ||
| 754021d0 AM |
6916 | if (some_edited) |
| 6917 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 6918 | ||
| 3f764659 JJ |
6919 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 6920 | long, add a 8 byte padding after it. */ | |
| 6921 | if (need_pad != NULL && !info->relocatable) | |
| 6922 | { | |
| 6923 | bfd_byte *p; | |
| 6924 | ||
| 6925 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 6926 | { | |
| 6927 | BFD_ASSERT (need_pad->size > 0); | |
| 6928 | ||
| 6929 | p = bfd_malloc (need_pad->size + 8); | |
| 6930 | if (p == NULL) | |
| 6931 | return FALSE; | |
| 699733f6 | 6932 | |
| 3f764659 JJ |
6933 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 6934 | p, 0, need_pad->size)) | |
| 6935 | return FALSE; | |
| 6936 | ||
| 6937 | need_pad->contents = p; | |
| 6938 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 6939 | } | |
| 6940 | else | |
| 6941 | { | |
| 6942 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 6943 | if (p == NULL) | |
| 6944 | return FALSE; | |
| 6945 | ||
| 6946 | need_pad->contents = p; | |
| 6947 | } | |
| 6948 | ||
| 6949 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 6950 | need_pad->size += 8; | |
| 6951 | } | |
| 6952 | ||
| 411e1bfb AM |
6953 | return TRUE; |
| 6954 | } | |
| 6955 | ||
| e1918d23 | 6956 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 6957 | |
| e1918d23 | 6958 | asection * |
| 4ce794b7 | 6959 | ppc64_elf_tls_setup (bfd *obfd, struct bfd_link_info *info) |
| 411e1bfb | 6960 | { |
| 411e1bfb AM |
6961 | struct ppc_link_hash_table *htab; |
| 6962 | ||
| 411e1bfb | 6963 | htab = ppc_hash_table (info); |
| 3a71aa26 AM |
6964 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 6965 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 6966 | FALSE, FALSE, TRUE)); | |
| 6967 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) | |
| 6968 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 6969 | FALSE, FALSE, TRUE)); | |
| 6970 | return _bfd_elf_tls_setup (obfd, info); | |
| 6971 | } | |
| 8387904d | 6972 | |
| 3a71aa26 AM |
6973 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 6974 | HASH1 or HASH2. */ | |
| 8387904d | 6975 | |
| 3a71aa26 AM |
6976 | static bfd_boolean |
| 6977 | branch_reloc_hash_match (const bfd *ibfd, | |
| 6978 | const Elf_Internal_Rela *rel, | |
| 6979 | const struct ppc_link_hash_entry *hash1, | |
| 6980 | const struct ppc_link_hash_entry *hash2) | |
| 6981 | { | |
| 6982 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 6983 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 6984 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 6985 | ||
| 6986 | if (r_symndx >= symtab_hdr->sh_info | |
| 6987 | && (r_type == R_PPC64_REL24 | |
| 6988 | || r_type == R_PPC64_REL14 | |
| 6989 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 6990 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 6991 | || r_type == R_PPC64_ADDR24 | |
| 6992 | || r_type == R_PPC64_ADDR14 | |
| 6993 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 6994 | || r_type == R_PPC64_ADDR14_BRNTAKEN)) | |
| 8387904d | 6995 | { |
| 3a71aa26 AM |
6996 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 6997 | struct elf_link_hash_entry *h; | |
| 8387904d | 6998 | |
| 3a71aa26 AM |
6999 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 7000 | while (h->root.type == bfd_link_hash_indirect | |
| 7001 | || h->root.type == bfd_link_hash_warning) | |
| 7002 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 7003 | if (h == &hash1->elf || h == &hash2->elf) | |
| 7004 | return TRUE; | |
| a48ebf4d | 7005 | } |
| 3a71aa26 | 7006 | return FALSE; |
| 951fd09b | 7007 | } |
| 411e1bfb | 7008 | |
| 951fd09b AM |
7009 | /* Run through all the TLS relocs looking for optimization |
| 7010 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 7011 | a preliminary section layout so that we know the TLS segment | |
| 7012 | offsets. We can't optimize earlier because some optimizations need | |
| 7013 | to know the tp offset, and we need to optimize before allocating | |
| 7014 | dynamic relocations. */ | |
| 7015 | ||
| 7016 | bfd_boolean | |
| 4ce794b7 | 7017 | ppc64_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) |
| 951fd09b AM |
7018 | { |
| 7019 | bfd *ibfd; | |
| 7020 | asection *sec; | |
| 7021 | struct ppc_link_hash_table *htab; | |
| 102890f0 | 7022 | int pass; |
| 951fd09b | 7023 | |
| 1d483afe | 7024 | if (info->relocatable || !info->executable) |
| 411e1bfb AM |
7025 | return TRUE; |
| 7026 | ||
| 951fd09b | 7027 | htab = ppc_hash_table (info); |
| 411e1bfb AM |
7028 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 7029 | { | |
| 7030 | Elf_Internal_Sym *locsyms = NULL; | |
| 30038c59 AM |
7031 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 7032 | unsigned char *toc_ref = NULL; | |
| 411e1bfb | 7033 | |
| 102890f0 AM |
7034 | /* Look at all the sections for this file. Make two passes over |
| 7035 | the relocs. On the first pass, mark toc entries involved | |
| 7036 | with tls relocs, and check that tls relocs involved in | |
| 7037 | setting up a tls_get_addr call are indeed followed by such a | |
| 7038 | call. If they are not, exclude them from the optimizations | |
| 7039 | done on the second pass. */ | |
| 7040 | for (pass = 0; pass < 2; ++pass) | |
| 7041 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7042 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 7043 | { | |
| 7044 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 411e1bfb | 7045 | |
| 102890f0 AM |
7046 | /* Read the relocations. */ |
| 7047 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 7048 | info->keep_memory); | |
| 7049 | if (relstart == NULL) | |
| 7050 | return FALSE; | |
| 411e1bfb | 7051 | |
| 102890f0 AM |
7052 | relend = relstart + sec->reloc_count; |
| 7053 | for (rel = relstart; rel < relend; rel++) | |
| 7054 | { | |
| 7055 | enum elf_ppc64_reloc_type r_type; | |
| 7056 | unsigned long r_symndx; | |
| 7057 | struct elf_link_hash_entry *h; | |
| 7058 | Elf_Internal_Sym *sym; | |
| 7059 | asection *sym_sec; | |
| 7060 | char *tls_mask; | |
| 7061 | char tls_set, tls_clear, tls_type = 0; | |
| 7062 | bfd_vma value; | |
| 7063 | bfd_boolean ok_tprel, is_local; | |
| 7064 | long toc_ref_index = 0; | |
| 7065 | int expecting_tls_get_addr = 0; | |
| 411e1bfb | 7066 | |
| 102890f0 AM |
7067 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 7068 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 7069 | r_symndx, ibfd)) | |
| 7070 | { | |
| 7071 | err_free_rel: | |
| 7072 | if (elf_section_data (sec)->relocs != relstart) | |
| 7073 | free (relstart); | |
| 7074 | if (toc_ref != NULL) | |
| 7075 | free (toc_ref); | |
| 7076 | if (locsyms != NULL | |
| 0ffa91dd | 7077 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
7078 | != (unsigned char *) locsyms)) |
| 7079 | free (locsyms); | |
| 7080 | return FALSE; | |
| 7081 | } | |
| 411e1bfb | 7082 | |
| 102890f0 AM |
7083 | if (h != NULL) |
| 7084 | { | |
| 7085 | if (h->root.type != bfd_link_hash_defined | |
| 7086 | && h->root.type != bfd_link_hash_defweak) | |
| 7087 | continue; | |
| 7088 | value = h->root.u.def.value; | |
| 7089 | } | |
| 7090 | else | |
| 7091 | /* Symbols referenced by TLS relocs must be of type | |
| 7092 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 7093 | value = sym->st_value; | |
| 7094 | ||
| 7095 | ok_tprel = FALSE; | |
| 7096 | is_local = FALSE; | |
| 7097 | if (h == NULL | |
| 7098 | || !h->def_dynamic) | |
| 7099 | { | |
| 7100 | is_local = TRUE; | |
| 7101 | value += sym_sec->output_offset; | |
| 7102 | value += sym_sec->output_section->vma; | |
| 7103 | value -= htab->elf.tls_sec->vma; | |
| 7104 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 7105 | < (bfd_vma) 1 << 32); | |
| 7106 | } | |
| 951fd09b | 7107 | |
| 102890f0 AM |
7108 | r_type = ELF64_R_TYPE (rel->r_info); |
| 7109 | switch (r_type) | |
| 7110 | { | |
| 7111 | case R_PPC64_GOT_TLSLD16: | |
| 7112 | case R_PPC64_GOT_TLSLD16_LO: | |
| 7113 | expecting_tls_get_addr = 1; | |
| 7114 | /* Fall thru */ | |
| 7115 | ||
| 7116 | case R_PPC64_GOT_TLSLD16_HI: | |
| 7117 | case R_PPC64_GOT_TLSLD16_HA: | |
| 7118 | /* These relocs should never be against a symbol | |
| 7119 | defined in a shared lib. Leave them alone if | |
| 7120 | that turns out to be the case. */ | |
| 7121 | if (!is_local) | |
| 7122 | continue; | |
| 411e1bfb | 7123 | |
| 102890f0 | 7124 | /* LD -> LE */ |
| 411e1bfb | 7125 | tls_set = 0; |
| 102890f0 AM |
7126 | tls_clear = TLS_LD; |
| 7127 | tls_type = TLS_TLS | TLS_LD; | |
| 7128 | break; | |
| 411e1bfb | 7129 | |
| 102890f0 AM |
7130 | case R_PPC64_GOT_TLSGD16: |
| 7131 | case R_PPC64_GOT_TLSGD16_LO: | |
| 7132 | expecting_tls_get_addr = 1; | |
| 7133 | /* Fall thru */ | |
| 7134 | ||
| 7135 | case R_PPC64_GOT_TLSGD16_HI: | |
| 7136 | case R_PPC64_GOT_TLSGD16_HA: | |
| 7137 | if (ok_tprel) | |
| 7138 | /* GD -> LE */ | |
| 411e1bfb | 7139 | tls_set = 0; |
| 102890f0 AM |
7140 | else |
| 7141 | /* GD -> IE */ | |
| 7142 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 7143 | tls_clear = TLS_GD; | |
| 7144 | tls_type = TLS_TLS | TLS_GD; | |
| 7145 | break; | |
| 7146 | ||
| 7147 | case R_PPC64_GOT_TPREL16_DS: | |
| 7148 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 7149 | case R_PPC64_GOT_TPREL16_HI: | |
| 7150 | case R_PPC64_GOT_TPREL16_HA: | |
| 7151 | if (ok_tprel) | |
| 7152 | { | |
| 7153 | /* IE -> LE */ | |
| 7154 | tls_set = 0; | |
| 7155 | tls_clear = TLS_TPREL; | |
| 7156 | tls_type = TLS_TLS | TLS_TPREL; | |
| 7157 | break; | |
| 7158 | } | |
| 411e1bfb AM |
7159 | continue; |
| 7160 | ||
| 102890f0 AM |
7161 | case R_PPC64_TOC16: |
| 7162 | case R_PPC64_TOC16_LO: | |
| 7163 | case R_PPC64_TLS: | |
| 727fc41e AM |
7164 | case R_PPC64_TLSGD: |
| 7165 | case R_PPC64_TLSLD: | |
| 102890f0 AM |
7166 | if (sym_sec == NULL || sym_sec != toc) |
| 7167 | continue; | |
| 7168 | ||
| 7169 | /* Mark this toc entry as referenced by a TLS | |
| 7170 | code sequence. We can do that now in the | |
| 7171 | case of R_PPC64_TLS, and after checking for | |
| 7172 | tls_get_addr for the TOC16 relocs. */ | |
| 7173 | if (toc_ref == NULL) | |
| 7174 | { | |
| 7175 | toc_ref = bfd_zmalloc (toc->size / 8); | |
| 7176 | if (toc_ref == NULL) | |
| 7177 | goto err_free_rel; | |
| 7178 | } | |
| 7179 | if (h != NULL) | |
| 7180 | value = h->root.u.def.value; | |
| 7181 | else | |
| 7182 | value = sym->st_value; | |
| 7183 | value += rel->r_addend; | |
| 7184 | BFD_ASSERT (value < toc->size && value % 8 == 0); | |
| 7185 | toc_ref_index = value / 8; | |
| 727fc41e AM |
7186 | if (r_type == R_PPC64_TLS |
| 7187 | || r_type == R_PPC64_TLSGD | |
| 7188 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
7189 | { |
| 7190 | toc_ref[toc_ref_index] = 1; | |
| 7191 | continue; | |
| 7192 | } | |
| 7193 | ||
| 7194 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 7195 | continue; | |
| 7196 | ||
| 7197 | tls_set = 0; | |
| 7198 | tls_clear = 0; | |
| 7199 | expecting_tls_get_addr = 2; | |
| 7200 | break; | |
| 7201 | ||
| 7202 | case R_PPC64_TPREL64: | |
| 7203 | if (pass == 0 | |
| 7204 | || sec != toc | |
| 7205 | || toc_ref == NULL | |
| 7206 | || !toc_ref[rel->r_offset / 8]) | |
| 7207 | continue; | |
| 7208 | if (ok_tprel) | |
| 7209 | { | |
| 7210 | /* IE -> LE */ | |
| 7211 | tls_set = TLS_EXPLICIT; | |
| 7212 | tls_clear = TLS_TPREL; | |
| 7213 | break; | |
| 7214 | } | |
| 7215 | continue; | |
| 7216 | ||
| 7217 | case R_PPC64_DTPMOD64: | |
| 7218 | if (pass == 0 | |
| 7219 | || sec != toc | |
| 7220 | || toc_ref == NULL | |
| 7221 | || !toc_ref[rel->r_offset / 8]) | |
| 7222 | continue; | |
| 7223 | if (rel + 1 < relend | |
| 7224 | && (rel[1].r_info | |
| 7225 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 7226 | && rel[1].r_offset == rel->r_offset + 8) | |
| 7227 | { | |
| 7228 | if (ok_tprel) | |
| 7229 | /* GD -> LE */ | |
| 7230 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 7231 | else | |
| 7232 | /* GD -> IE */ | |
| 7233 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 7234 | tls_clear = TLS_GD; | |
| 7235 | } | |
| 7236 | else | |
| 7237 | { | |
| 7238 | if (!is_local) | |
| 7239 | continue; | |
| 7240 | ||
| 7241 | /* LD -> LE */ | |
| 7242 | tls_set = TLS_EXPLICIT; | |
| 7243 | tls_clear = TLS_LD; | |
| 7244 | } | |
| 7245 | break; | |
| 7246 | ||
| 7247 | default: | |
| 7248 | continue; | |
| 7249 | } | |
| 7250 | ||
| 7251 | if (pass == 0) | |
| 7252 | { | |
| 727fc41e AM |
7253 | if (!expecting_tls_get_addr |
| 7254 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
7255 | continue; |
| 7256 | ||
| 3a71aa26 AM |
7257 | if (rel + 1 < relend |
| 7258 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 7259 | htab->tls_get_addr, | |
| 7260 | htab->tls_get_addr_fd)) | |
| 102890f0 | 7261 | { |
| 3a71aa26 | 7262 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 7263 | { |
| 3a71aa26 AM |
7264 | /* Check for toc tls entries. */ |
| 7265 | char *toc_tls; | |
| 7266 | int retval; | |
| 7267 | ||
| 7268 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 7269 | &locsyms, | |
| 7270 | rel, ibfd); | |
| 7271 | if (retval == 0) | |
| 7272 | goto err_free_rel; | |
| 7273 | if (retval > 1 && toc_tls != NULL) | |
| 7274 | toc_ref[toc_ref_index] = 1; | |
| 102890f0 | 7275 | } |
| 3a71aa26 | 7276 | continue; |
| 102890f0 AM |
7277 | } |
| 7278 | ||
| 7279 | if (expecting_tls_get_addr != 1) | |
| 7280 | continue; | |
| 7281 | ||
| 7282 | /* Uh oh, we didn't find the expected call. We | |
| 7283 | could just mark this symbol to exclude it | |
| 7284 | from tls optimization but it's safer to skip | |
| 7285 | the entire section. */ | |
| 7286 | sec->has_tls_reloc = 0; | |
| 7287 | break; | |
| 7288 | } | |
| 7289 | ||
| 85f7a9cb | 7290 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
7291 | { |
| 7292 | struct plt_entry *ent; | |
| 7293 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 7294 | ent != NULL; | |
| 7295 | ent = ent->next) | |
| 7296 | if (ent->addend == 0) | |
| 411e1bfb | 7297 | { |
| 102890f0 | 7298 | if (ent->plt.refcount > 0) |
| 30038c59 | 7299 | { |
| 102890f0 AM |
7300 | ent->plt.refcount -= 1; |
| 7301 | expecting_tls_get_addr = 0; | |
| 30038c59 | 7302 | } |
| 102890f0 | 7303 | break; |
| 411e1bfb | 7304 | } |
| 102890f0 | 7305 | } |
| 411e1bfb | 7306 | |
| 85f7a9cb | 7307 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
7308 | { |
| 7309 | struct plt_entry *ent; | |
| 7310 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 7311 | ent != NULL; | |
| 7312 | ent = ent->next) | |
| 7313 | if (ent->addend == 0) | |
| 411e1bfb | 7314 | { |
| 102890f0 AM |
7315 | if (ent->plt.refcount > 0) |
| 7316 | ent->plt.refcount -= 1; | |
| 7317 | break; | |
| 411e1bfb | 7318 | } |
| 102890f0 | 7319 | } |
| 411e1bfb | 7320 | |
| 102890f0 | 7321 | if (tls_clear == 0) |
| 30038c59 AM |
7322 | continue; |
| 7323 | ||
| 102890f0 AM |
7324 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 7325 | { | |
| 7326 | struct got_entry *ent; | |
| 411e1bfb | 7327 | |
| 102890f0 AM |
7328 | /* Adjust got entry for this reloc. */ |
| 7329 | if (h != NULL) | |
| 7330 | ent = h->got.glist; | |
| 7331 | else | |
| 7332 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 7333 | |
| 102890f0 AM |
7334 | for (; ent != NULL; ent = ent->next) |
| 7335 | if (ent->addend == rel->r_addend | |
| 7336 | && ent->owner == ibfd | |
| 7337 | && ent->tls_type == tls_type) | |
| 7338 | break; | |
| 7339 | if (ent == NULL) | |
| 7340 | abort (); | |
| 411e1bfb | 7341 | |
| 102890f0 AM |
7342 | if (tls_set == 0) |
| 7343 | { | |
| 7344 | /* We managed to get rid of a got entry. */ | |
| 7345 | if (ent->got.refcount > 0) | |
| 7346 | ent->got.refcount -= 1; | |
| 7347 | } | |
| 7348 | } | |
| 7349 | else | |
| 7350 | { | |
| 7351 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 7352 | we'll lose one or two dyn relocs. */ | |
| 7353 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 7354 | NULL, h, sym_sec)) | |
| 7355 | return FALSE; | |
| 411e1bfb | 7356 | |
| 102890f0 AM |
7357 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 7358 | { | |
| 7359 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 7360 | NULL, h, sym_sec)) | |
| 7361 | return FALSE; | |
| 7362 | } | |
| 7363 | } | |
| 411e1bfb | 7364 | |
| 102890f0 AM |
7365 | *tls_mask |= tls_set; |
| 7366 | *tls_mask &= ~tls_clear; | |
| 7367 | } | |
| 8c1d1bb8 | 7368 | |
| 102890f0 AM |
7369 | if (elf_section_data (sec)->relocs != relstart) |
| 7370 | free (relstart); | |
| 7371 | } | |
| 411e1bfb | 7372 | |
| 727fc41e AM |
7373 | if (toc_ref != NULL) |
| 7374 | free (toc_ref); | |
| 411e1bfb | 7375 | |
| 727fc41e AM |
7376 | if (locsyms != NULL |
| 7377 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 7378 | { | |
| 7379 | if (!info->keep_memory) | |
| 7380 | free (locsyms); | |
| 7381 | else | |
| 7382 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 7383 | } | |
| 7384 | } | |
| b34976b6 | 7385 | return TRUE; |
| 1e2f5b6e | 7386 | } |
| b34976b6 | 7387 | |
| c5614fa4 AM |
7388 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 7389 | the values of any global symbols in a toc section that has been | |
| 7390 | edited. Globals in toc sections should be a rarity, so this function | |
| 7391 | sets a flag if any are found in toc sections other than the one just | |
| 7392 | edited, so that futher hash table traversals can be avoided. */ | |
| 7393 | ||
| 7394 | struct adjust_toc_info | |
| 7395 | { | |
| 7396 | asection *toc; | |
| 7397 | unsigned long *skip; | |
| 7398 | bfd_boolean global_toc_syms; | |
| 7399 | }; | |
| 7400 | ||
| 7401 | static bfd_boolean | |
| 7402 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 7403 | { | |
| 7404 | struct ppc_link_hash_entry *eh; | |
| 7405 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 7406 | ||
| 7407 | if (h->root.type == bfd_link_hash_indirect) | |
| 7408 | return TRUE; | |
| 7409 | ||
| 7410 | if (h->root.type == bfd_link_hash_warning) | |
| 7411 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 7412 | ||
| 7413 | if (h->root.type != bfd_link_hash_defined | |
| 7414 | && h->root.type != bfd_link_hash_defweak) | |
| 7415 | return TRUE; | |
| 7416 | ||
| 7417 | eh = (struct ppc_link_hash_entry *) h; | |
| 7418 | if (eh->adjust_done) | |
| 7419 | return TRUE; | |
| 7420 | ||
| 7421 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 7422 | { | |
| 7423 | unsigned long skip = toc_inf->skip[eh->elf.root.u.def.value >> 3]; | |
| 7424 | if (skip != (unsigned long) -1) | |
| 7425 | eh->elf.root.u.def.value -= skip; | |
| 7426 | else | |
| 7427 | { | |
| 7428 | (*_bfd_error_handler) | |
| 7429 | (_("%s defined in removed toc entry"), eh->elf.root.root.string); | |
| 7430 | eh->elf.root.u.def.section = &bfd_abs_section; | |
| 7431 | eh->elf.root.u.def.value = 0; | |
| 7432 | } | |
| 7433 | eh->adjust_done = 1; | |
| 7434 | } | |
| 7435 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 7436 | toc_inf->global_toc_syms = TRUE; | |
| 7437 | ||
| 7438 | return TRUE; | |
| 7439 | } | |
| 7440 | ||
| 7441 | /* Examine all relocs referencing .toc sections in order to remove | |
| 7442 | unused .toc entries. */ | |
| 7443 | ||
| 7444 | bfd_boolean | |
| 7445 | ppc64_elf_edit_toc (bfd *obfd ATTRIBUTE_UNUSED, struct bfd_link_info *info) | |
| 7446 | { | |
| 7447 | bfd *ibfd; | |
| 7448 | struct adjust_toc_info toc_inf; | |
| 7449 | ||
| 7450 | toc_inf.global_toc_syms = TRUE; | |
| 7451 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 7452 | { | |
| 7453 | asection *toc, *sec; | |
| 7454 | Elf_Internal_Shdr *symtab_hdr; | |
| 7455 | Elf_Internal_Sym *local_syms; | |
| 7456 | struct elf_link_hash_entry **sym_hashes; | |
| 92b7a70f | 7457 | Elf_Internal_Rela *relstart, *rel; |
| c5614fa4 AM |
7458 | unsigned long *skip, *drop; |
| 7459 | unsigned char *used; | |
| 7460 | unsigned char *keep, last, some_unused; | |
| 7461 | ||
| 7462 | toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 7463 | if (toc == NULL | |
| 92b7a70f | 7464 | || toc->size == 0 |
| c5614fa4 AM |
7465 | || toc->sec_info_type == ELF_INFO_TYPE_JUST_SYMS |
| 7466 | || elf_discarded_section (toc)) | |
| 7467 | continue; | |
| 7468 | ||
| 7469 | local_syms = NULL; | |
| 0ffa91dd | 7470 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
7471 | sym_hashes = elf_sym_hashes (ibfd); |
| 7472 | ||
| 7473 | /* Look at sections dropped from the final link. */ | |
| 7474 | skip = NULL; | |
| 7475 | relstart = NULL; | |
| 7476 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7477 | { | |
| 7478 | if (sec->reloc_count == 0 | |
| 7479 | || !elf_discarded_section (sec) | |
| 7480 | || get_opd_info (sec) | |
| 7481 | || (sec->flags & SEC_ALLOC) == 0 | |
| 7482 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 7483 | continue; | |
| 7484 | ||
| 7485 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 7486 | if (relstart == NULL) | |
| 7487 | goto error_ret; | |
| 7488 | ||
| 7489 | /* Run through the relocs to see which toc entries might be | |
| 7490 | unused. */ | |
| 7491 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 7492 | { | |
| 7493 | enum elf_ppc64_reloc_type r_type; | |
| 7494 | unsigned long r_symndx; | |
| 7495 | asection *sym_sec; | |
| 7496 | struct elf_link_hash_entry *h; | |
| 7497 | Elf_Internal_Sym *sym; | |
| 7498 | bfd_vma val; | |
| 7499 | ||
| 7500 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 7501 | switch (r_type) | |
| 7502 | { | |
| 7503 | default: | |
| 7504 | continue; | |
| 7505 | ||
| 7506 | case R_PPC64_TOC16: | |
| 7507 | case R_PPC64_TOC16_LO: | |
| 7508 | case R_PPC64_TOC16_HI: | |
| 7509 | case R_PPC64_TOC16_HA: | |
| 7510 | case R_PPC64_TOC16_DS: | |
| 7511 | case R_PPC64_TOC16_LO_DS: | |
| 7512 | break; | |
| 7513 | } | |
| 7514 | ||
| 7515 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7516 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 7517 | r_symndx, ibfd)) | |
| 7518 | goto error_ret; | |
| 7519 | ||
| 7520 | if (sym_sec != toc) | |
| 7521 | continue; | |
| 7522 | ||
| 7523 | if (h != NULL) | |
| 7524 | val = h->root.u.def.value; | |
| 7525 | else | |
| 7526 | val = sym->st_value; | |
| 7527 | val += rel->r_addend; | |
| 7528 | ||
| 7529 | if (val >= toc->size) | |
| 7530 | continue; | |
| 7531 | ||
| 7532 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 7533 | If not, don't mark as unused. */ | |
| 7534 | if (val & 7) | |
| 7535 | continue; | |
| 7536 | ||
| 7537 | if (skip == NULL) | |
| 7538 | { | |
| 7539 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 7) / 8); | |
| 7540 | if (skip == NULL) | |
| 7541 | goto error_ret; | |
| 7542 | } | |
| 7543 | ||
| 7544 | skip[val >> 3] = 1; | |
| 7545 | } | |
| 7546 | ||
| 7547 | if (elf_section_data (sec)->relocs != relstart) | |
| 7548 | free (relstart); | |
| 7549 | } | |
| 7550 | ||
| 7551 | if (skip == NULL) | |
| 7552 | continue; | |
| 7553 | ||
| 7554 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 7555 | if (used == NULL) | |
| 7556 | { | |
| 7557 | error_ret: | |
| 7558 | if (local_syms != NULL | |
| 7559 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7560 | free (local_syms); | |
| 7561 | if (sec != NULL | |
| 7562 | && relstart != NULL | |
| 7563 | && elf_section_data (sec)->relocs != relstart) | |
| 7564 | free (relstart); | |
| 7565 | if (skip != NULL) | |
| 7566 | free (skip); | |
| 7567 | return FALSE; | |
| 7568 | } | |
| 7569 | ||
| 30038c59 AM |
7570 | /* Now check all kept sections that might reference the toc. |
| 7571 | Check the toc itself last. */ | |
| 7572 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 7573 | : ibfd->sections); | |
| c5614fa4 | 7574 | sec != NULL; |
| c5614fa4 | 7575 | sec = (sec == toc ? NULL |
| c5614fa4 | 7576 | : sec->next == NULL ? toc |
| 30038c59 | 7577 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
7578 | : sec->next)) |
| 7579 | { | |
| 7580 | int repeat; | |
| 7581 | ||
| 7582 | if (sec->reloc_count == 0 | |
| 7583 | || elf_discarded_section (sec) | |
| 7584 | || get_opd_info (sec) | |
| 7585 | || (sec->flags & SEC_ALLOC) == 0 | |
| 7586 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 7587 | continue; | |
| 7588 | ||
| 7589 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, TRUE); | |
| 7590 | if (relstart == NULL) | |
| 7591 | goto error_ret; | |
| 7592 | ||
| 7593 | /* Mark toc entries referenced as used. */ | |
| 7594 | repeat = 0; | |
| 7595 | do | |
| 7596 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 7597 | { | |
| 7598 | enum elf_ppc64_reloc_type r_type; | |
| 7599 | unsigned long r_symndx; | |
| 7600 | asection *sym_sec; | |
| 7601 | struct elf_link_hash_entry *h; | |
| 7602 | Elf_Internal_Sym *sym; | |
| 7603 | bfd_vma val; | |
| 7604 | ||
| 7605 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 7606 | switch (r_type) | |
| 7607 | { | |
| 7608 | case R_PPC64_TOC16: | |
| 7609 | case R_PPC64_TOC16_LO: | |
| 7610 | case R_PPC64_TOC16_HI: | |
| 7611 | case R_PPC64_TOC16_HA: | |
| 7612 | case R_PPC64_TOC16_DS: | |
| 7613 | case R_PPC64_TOC16_LO_DS: | |
| 7614 | /* In case we're taking addresses of toc entries. */ | |
| 7615 | case R_PPC64_ADDR64: | |
| 7616 | break; | |
| 7617 | ||
| 7618 | default: | |
| 7619 | continue; | |
| 7620 | } | |
| 7621 | ||
| 7622 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7623 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 7624 | r_symndx, ibfd)) | |
| 7625 | { | |
| 7626 | free (used); | |
| 7627 | goto error_ret; | |
| 7628 | } | |
| 7629 | ||
| 7630 | if (sym_sec != toc) | |
| 7631 | continue; | |
| 7632 | ||
| 7633 | if (h != NULL) | |
| 7634 | val = h->root.u.def.value; | |
| 7635 | else | |
| 7636 | val = sym->st_value; | |
| 7637 | val += rel->r_addend; | |
| 7638 | ||
| 7639 | if (val >= toc->size) | |
| 7640 | continue; | |
| 7641 | ||
| 7642 | /* For the toc section, we only mark as used if | |
| 7643 | this entry itself isn't unused. */ | |
| 7644 | if (sec == toc | |
| 7645 | && !used[val >> 3] | |
| 7646 | && (used[rel->r_offset >> 3] | |
| 7647 | || !skip[rel->r_offset >> 3])) | |
| 7648 | /* Do all the relocs again, to catch reference | |
| 7649 | chains. */ | |
| 7650 | repeat = 1; | |
| 7651 | ||
| 7652 | used[val >> 3] = 1; | |
| 7653 | } | |
| 7654 | while (repeat); | |
| 7655 | } | |
| 7656 | ||
| 7657 | /* Merge the used and skip arrays. Assume that TOC | |
| 7658 | doublewords not appearing as either used or unused belong | |
| 7659 | to to an entry more than one doubleword in size. */ | |
| 7660 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 7661 | drop < skip + (toc->size + 7) / 8; | |
| 7662 | ++drop, ++keep) | |
| 7663 | { | |
| 7664 | if (*keep) | |
| 7665 | { | |
| 7666 | *drop = 0; | |
| 7667 | last = 0; | |
| 7668 | } | |
| 7669 | else if (*drop) | |
| 7670 | { | |
| 7671 | some_unused = 1; | |
| 7672 | last = 1; | |
| 7673 | } | |
| 7674 | else | |
| 7675 | *drop = last; | |
| 7676 | } | |
| 7677 | ||
| 7678 | free (used); | |
| 7679 | ||
| 7680 | if (some_unused) | |
| 7681 | { | |
| 7682 | bfd_byte *contents, *src; | |
| 7683 | unsigned long off; | |
| 7684 | ||
| 7685 | /* Shuffle the toc contents, and at the same time convert the | |
| 7686 | skip array from booleans into offsets. */ | |
| 7687 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 7688 | goto error_ret; | |
| 7689 | ||
| 7690 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 7691 | ||
| 7692 | for (src = contents, off = 0, drop = skip; | |
| 7693 | src < contents + toc->size; | |
| 7694 | src += 8, ++drop) | |
| 7695 | { | |
| 7696 | if (*drop) | |
| 7697 | { | |
| 7698 | *drop = (unsigned long) -1; | |
| 7699 | off += 8; | |
| 7700 | } | |
| 7701 | else if (off != 0) | |
| 7702 | { | |
| 7703 | *drop = off; | |
| 7704 | memcpy (src - off, src, 8); | |
| 7705 | } | |
| 7706 | } | |
| 7707 | toc->rawsize = toc->size; | |
| 7708 | toc->size = src - contents - off; | |
| 7709 | ||
| 92b7a70f AM |
7710 | if (toc->reloc_count != 0) |
| 7711 | { | |
| 7712 | Elf_Internal_Rela *wrel; | |
| 7713 | bfd_size_type sz; | |
| c5614fa4 | 7714 | |
| 92b7a70f AM |
7715 | /* Read toc relocs. */ |
| 7716 | relstart = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 7717 | TRUE); | |
| 7718 | if (relstart == NULL) | |
| 7719 | goto error_ret; | |
| 7720 | ||
| 7721 | /* Remove unused toc relocs, and adjust those we keep. */ | |
| 7722 | wrel = relstart; | |
| 7723 | for (rel = relstart; rel < relstart + toc->reloc_count; ++rel) | |
| 7724 | if (skip[rel->r_offset >> 3] != (unsigned long) -1) | |
| 7725 | { | |
| 7726 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 7727 | wrel->r_info = rel->r_info; | |
| 7728 | wrel->r_addend = rel->r_addend; | |
| 7729 | ++wrel; | |
| 7730 | } | |
| 8c1d1bb8 AM |
7731 | else if (!dec_dynrel_count (rel->r_info, toc, info, |
| 7732 | &local_syms, NULL, NULL)) | |
| 7733 | goto error_ret; | |
| 35090471 | 7734 | |
| 92b7a70f AM |
7735 | toc->reloc_count = wrel - relstart; |
| 7736 | sz = elf_section_data (toc)->rel_hdr.sh_entsize; | |
| 7737 | elf_section_data (toc)->rel_hdr.sh_size = toc->reloc_count * sz; | |
| 7738 | BFD_ASSERT (elf_section_data (toc)->rel_hdr2 == NULL); | |
| 7739 | } | |
| c5614fa4 AM |
7740 | |
| 7741 | /* Adjust addends for relocs against the toc section sym. */ | |
| 7742 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 7743 | { | |
| 7744 | if (sec->reloc_count == 0 | |
| 7745 | || elf_discarded_section (sec)) | |
| 7746 | continue; | |
| 7747 | ||
| 7748 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 7749 | TRUE); | |
| 7750 | if (relstart == NULL) | |
| 7751 | goto error_ret; | |
| 7752 | ||
| 7753 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 7754 | { | |
| 7755 | enum elf_ppc64_reloc_type r_type; | |
| 7756 | unsigned long r_symndx; | |
| 7757 | asection *sym_sec; | |
| 7758 | struct elf_link_hash_entry *h; | |
| 7759 | Elf_Internal_Sym *sym; | |
| 7760 | ||
| 7761 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 7762 | switch (r_type) | |
| 7763 | { | |
| 7764 | default: | |
| 7765 | continue; | |
| 7766 | ||
| 7767 | case R_PPC64_TOC16: | |
| 7768 | case R_PPC64_TOC16_LO: | |
| 7769 | case R_PPC64_TOC16_HI: | |
| 7770 | case R_PPC64_TOC16_HA: | |
| 7771 | case R_PPC64_TOC16_DS: | |
| 7772 | case R_PPC64_TOC16_LO_DS: | |
| 7773 | case R_PPC64_ADDR64: | |
| 7774 | break; | |
| 7775 | } | |
| 7776 | ||
| 7777 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7778 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 7779 | r_symndx, ibfd)) | |
| 7780 | goto error_ret; | |
| 7781 | ||
| 7782 | if (sym_sec != toc || h != NULL || sym->st_value != 0) | |
| 7783 | continue; | |
| 7784 | ||
| 7785 | rel->r_addend -= skip[rel->r_addend >> 3]; | |
| 7786 | } | |
| 7787 | } | |
| 7788 | ||
| 7789 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 7790 | but handle them anyway. */ | |
| 7791 | if (local_syms != NULL) | |
| 7792 | { | |
| 7793 | Elf_Internal_Sym *sym; | |
| 7794 | ||
| 7795 | for (sym = local_syms; | |
| 7796 | sym < local_syms + symtab_hdr->sh_info; | |
| 7797 | ++sym) | |
| cb33740c | 7798 | if (sym->st_value != 0 |
| c5614fa4 AM |
7799 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) |
| 7800 | { | |
| 7801 | if (skip[sym->st_value >> 3] != (unsigned long) -1) | |
| 7802 | sym->st_value -= skip[sym->st_value >> 3]; | |
| 7803 | else | |
| 7804 | { | |
| 7805 | (*_bfd_error_handler) | |
| 7806 | (_("%s defined in removed toc entry"), | |
| 26c61ae5 L |
7807 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 7808 | NULL)); | |
| c5614fa4 AM |
7809 | sym->st_value = 0; |
| 7810 | sym->st_shndx = SHN_ABS; | |
| 7811 | } | |
| 7812 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7813 | } | |
| 7814 | } | |
| 7815 | ||
| 7816 | /* Finally, adjust any global syms defined in the toc. */ | |
| 7817 | if (toc_inf.global_toc_syms) | |
| 7818 | { | |
| 7819 | toc_inf.toc = toc; | |
| 7820 | toc_inf.skip = skip; | |
| 7821 | toc_inf.global_toc_syms = FALSE; | |
| 7822 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 7823 | &toc_inf); | |
| 7824 | } | |
| 7825 | } | |
| 7826 | ||
| 7827 | if (local_syms != NULL | |
| 7828 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7829 | { | |
| 7830 | if (!info->keep_memory) | |
| 7831 | free (local_syms); | |
| 7832 | else | |
| 7833 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 7834 | } | |
| 7835 | free (skip); | |
| 7836 | } | |
| 7837 | ||
| 7838 | return TRUE; | |
| 7839 | } | |
| 7840 | ||
| 65f38f15 AM |
7841 | /* Allocate space in .plt, .got and associated reloc sections for |
| 7842 | dynamic relocs. */ | |
| 5bd4f169 | 7843 | |
| b34976b6 | 7844 | static bfd_boolean |
| 4ce794b7 | 7845 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 7846 | { |
| 65f38f15 AM |
7847 | struct bfd_link_info *info; |
| 7848 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 7849 | asection *s; |
| 65f38f15 AM |
7850 | struct ppc_link_hash_entry *eh; |
| 7851 | struct ppc_dyn_relocs *p; | |
| 411e1bfb | 7852 | struct got_entry *gent; |
| 5bd4f169 | 7853 | |
| e92d460e | 7854 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 7855 | return TRUE; |
| 5bd4f169 | 7856 | |
| e92d460e AM |
7857 | if (h->root.type == bfd_link_hash_warning) |
| 7858 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 7859 | ||
| 65f38f15 AM |
7860 | info = (struct bfd_link_info *) inf; |
| 7861 | htab = ppc_hash_table (info); | |
| 5bd4f169 | 7862 | |
| 65f38f15 | 7863 | if (htab->elf.dynamic_sections_created |
| 411e1bfb | 7864 | && h->dynindx != -1 |
| 9c7a29a3 | 7865 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
| 5bd4f169 | 7866 | { |
| 411e1bfb AM |
7867 | struct plt_entry *pent; |
| 7868 | bfd_boolean doneone = FALSE; | |
| 7869 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 7870 | if (pent->plt.refcount > 0) | |
| 7871 | { | |
| 411e1bfb AM |
7872 | /* If this is the first .plt entry, make room for the special |
| 7873 | first entry. */ | |
| 4ce794b7 | 7874 | s = htab->plt; |
| eea6121a AM |
7875 | if (s->size == 0) |
| 7876 | s->size += PLT_INITIAL_ENTRY_SIZE; | |
| 411e1bfb | 7877 | |
| eea6121a | 7878 | pent->plt.offset = s->size; |
| 411e1bfb AM |
7879 | |
| 7880 | /* Make room for this entry. */ | |
| eea6121a | 7881 | s->size += PLT_ENTRY_SIZE; |
| 411e1bfb AM |
7882 | |
| 7883 | /* Make room for the .glink code. */ | |
| 4ce794b7 | 7884 | s = htab->glink; |
| eea6121a AM |
7885 | if (s->size == 0) |
| 7886 | s->size += GLINK_CALL_STUB_SIZE; | |
| 411e1bfb | 7887 | /* We need bigger stubs past index 32767. */ |
| eea6121a AM |
7888 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) |
| 7889 | s->size += 4; | |
| 7890 | s->size += 2*4; | |
| 411e1bfb AM |
7891 | |
| 7892 | /* We also need to make an entry in the .rela.plt section. */ | |
| 4ce794b7 | 7893 | s = htab->relplt; |
| eea6121a | 7894 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
7895 | doneone = TRUE; |
| 7896 | } | |
| 7897 | else | |
| 7898 | pent->plt.offset = (bfd_vma) -1; | |
| 7899 | if (!doneone) | |
| 65f38f15 | 7900 | { |
| 411e1bfb | 7901 | h->plt.plist = NULL; |
| f5385ebf | 7902 | h->needs_plt = 0; |
| 65f38f15 AM |
7903 | } |
| 7904 | } | |
| 7905 | else | |
| 7906 | { | |
| 411e1bfb | 7907 | h->plt.plist = NULL; |
| f5385ebf | 7908 | h->needs_plt = 0; |
| 65f38f15 AM |
7909 | } |
| 7910 | ||
| 951fd09b AM |
7911 | eh = (struct ppc_link_hash_entry *) h; |
| 7912 | /* Run through the TLS GD got entries first if we're changing them | |
| 7913 | to TPREL. */ | |
| e7b938ca | 7914 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
7915 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 7916 | if (gent->got.refcount > 0 | |
| 7917 | && (gent->tls_type & TLS_GD) != 0) | |
| 7918 | { | |
| 7919 | /* This was a GD entry that has been converted to TPREL. If | |
| 7920 | there happens to be a TPREL entry we can use that one. */ | |
| 7921 | struct got_entry *ent; | |
| 7922 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 7923 | if (ent->got.refcount > 0 | |
| 7924 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
7925 | && ent->addend == gent->addend |
| 7926 | && ent->owner == gent->owner) | |
| 951fd09b AM |
7927 | { |
| 7928 | gent->got.refcount = 0; | |
| 7929 | break; | |
| 7930 | } | |
| 7931 | ||
| 7932 | /* If not, then we'll be using our own TPREL entry. */ | |
| 7933 | if (gent->got.refcount != 0) | |
| 7934 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 7935 | } | |
| 7936 | ||
| 411e1bfb AM |
7937 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 7938 | if (gent->got.refcount > 0) | |
| 7939 | { | |
| 951fd09b AM |
7940 | bfd_boolean dyn; |
| 7941 | ||
| 411e1bfb | 7942 | /* Make sure this symbol is output as a dynamic symbol. |
| 951fd09b AM |
7943 | Undefined weak syms won't yet be marked as dynamic, |
| 7944 | nor will all TLS symbols. */ | |
| 411e1bfb | 7945 | if (h->dynindx == -1 |
| b099ab9f AM |
7946 | && !h->forced_local |
| 7947 | && htab->elf.dynamic_sections_created) | |
| 411e1bfb | 7948 | { |
| c152c796 | 7949 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
7950 | return FALSE; |
| 7951 | } | |
| 65f38f15 | 7952 | |
| d881513a | 7953 | if ((gent->tls_type & TLS_LD) != 0 |
| f5385ebf | 7954 | && !h->def_dynamic) |
| 411e1bfb | 7955 | { |
| 102890f0 AM |
7956 | ppc64_tlsld_got (gent->owner)->refcount += 1; |
| 7957 | gent->got.offset = (bfd_vma) -1; | |
| 951fd09b | 7958 | continue; |
| 411e1bfb | 7959 | } |
| 951fd09b | 7960 | |
| 0c8d6e5c | 7961 | if (!is_ppc64_elf (gent->owner)) |
| 0ffa91dd NC |
7962 | continue; |
| 7963 | ||
| e717da7e | 7964 | s = ppc64_elf_tdata (gent->owner)->got; |
| eea6121a AM |
7965 | gent->got.offset = s->size; |
| 7966 | s->size | |
| d881513a | 7967 | += (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD)) ? 16 : 8; |
| 951fd09b | 7968 | dyn = htab->elf.dynamic_sections_created; |
| 4e795f50 AM |
7969 | if ((info->shared |
| 7970 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) | |
| 7971 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 7972 | || h->root.type != bfd_link_hash_undefweak)) | |
| eea6121a | 7973 | ppc64_elf_tdata (gent->owner)->relgot->size |
| e7b938ca | 7974 | += (gent->tls_type & eh->tls_mask & TLS_GD |
| 951fd09b AM |
7975 | ? 2 * sizeof (Elf64_External_Rela) |
| 7976 | : sizeof (Elf64_External_Rela)); | |
| 411e1bfb AM |
7977 | } |
| 7978 | else | |
| 7979 | gent->got.offset = (bfd_vma) -1; | |
| 65f38f15 | 7980 | |
| b099ab9f AM |
7981 | if (eh->dyn_relocs == NULL |
| 7982 | || !htab->elf.dynamic_sections_created) | |
| b34976b6 | 7983 | return TRUE; |
| 65f38f15 AM |
7984 | |
| 7985 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 7986 | dynamic pc-relative relocs against symbols which turn out to be | |
| 7987 | defined in regular objects. For the normal shared case, discard | |
| 7988 | space for relocs that have become local due to symbol visibility | |
| 7989 | changes. */ | |
| 7990 | ||
| 7991 | if (info->shared) | |
| 7992 | { | |
| 9c7a29a3 | 7993 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 7994 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
7995 | generated via assembly. We want calls to protected symbols to |
| 7996 | resolve directly to the function rather than going via the plt. | |
| 7997 | If people want function pointer comparisons to work as expected | |
| 7998 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 7999 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 AM |
8000 | { |
| 8001 | struct ppc_dyn_relocs **pp; | |
| 8002 | ||
| 8003 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 8004 | { |
| 65f38f15 AM |
8005 | p->count -= p->pc_count; |
| 8006 | p->pc_count = 0; | |
| 8007 | if (p->count == 0) | |
| 8008 | *pp = p->next; | |
| 8009 | else | |
| 8010 | pp = &p->next; | |
| 5bd4f169 | 8011 | } |
| 65f38f15 | 8012 | } |
| 4e795f50 AM |
8013 | |
| 8014 | /* Also discard relocs on undefined weak syms with non-default | |
| 8015 | visibility. */ | |
| cab87ef9 AM |
8016 | if (eh->dyn_relocs != NULL |
| 8017 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
8018 | { |
| 8019 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 8020 | eh->dyn_relocs = NULL; | |
| 8021 | ||
| 8022 | /* Make sure this symbol is output as a dynamic symbol. | |
| 8023 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 8024 | else if (h->dynindx == -1 | |
| 8025 | && !h->forced_local) | |
| 8026 | { | |
| 8027 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 8028 | return FALSE; | |
| 8029 | } | |
| 8030 | } | |
| 65f38f15 | 8031 | } |
| f4656909 | 8032 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
8033 | { |
| 8034 | /* For the non-shared case, discard space for relocs against | |
| 8035 | symbols which turn out to need copy relocs or are not | |
| 8036 | dynamic. */ | |
| 8037 | ||
| f5385ebf | 8038 | if (!h->non_got_ref |
| f5385ebf | 8039 | && !h->def_regular) |
| 65f38f15 AM |
8040 | { |
| 8041 | /* Make sure this symbol is output as a dynamic symbol. | |
| 8042 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 8043 | if (h->dynindx == -1 | |
| f5385ebf | 8044 | && !h->forced_local) |
| 65f38f15 | 8045 | { |
| c152c796 | 8046 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 8047 | return FALSE; |
| 65f38f15 AM |
8048 | } |
| 8049 | ||
| 8050 | /* If that succeeded, we know we'll be keeping all the | |
| 8051 | relocs. */ | |
| 8052 | if (h->dynindx != -1) | |
| 8053 | goto keep; | |
| 8054 | } | |
| 8055 | ||
| 8056 | eh->dyn_relocs = NULL; | |
| 8057 | ||
| ec338859 | 8058 | keep: ; |
| 65f38f15 AM |
8059 | } |
| 8060 | ||
| 8061 | /* Finally, allocate space. */ | |
| 8062 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 8063 | { | |
| 8064 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| eea6121a | 8065 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
8066 | } |
| 8067 | ||
| b34976b6 | 8068 | return TRUE; |
| 65f38f15 AM |
8069 | } |
| 8070 | ||
| 8071 | /* Find any dynamic relocs that apply to read-only sections. */ | |
| 8072 | ||
| b34976b6 | 8073 | static bfd_boolean |
| 4ce794b7 | 8074 | readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 AM |
8075 | { |
| 8076 | struct ppc_link_hash_entry *eh; | |
| 8077 | struct ppc_dyn_relocs *p; | |
| 8078 | ||
| e92d460e AM |
8079 | if (h->root.type == bfd_link_hash_warning) |
| 8080 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 8081 | ||
| 65f38f15 AM |
8082 | eh = (struct ppc_link_hash_entry *) h; |
| 8083 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 8084 | { | |
| 8085 | asection *s = p->sec->output_section; | |
| 8086 | ||
| 8087 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 8088 | { | |
| 4ce794b7 | 8089 | struct bfd_link_info *info = inf; |
| 65f38f15 AM |
8090 | |
| 8091 | info->flags |= DF_TEXTREL; | |
| 8092 | ||
| 8093 | /* Not an error, just cut short the traversal. */ | |
| b34976b6 | 8094 | return FALSE; |
| 65f38f15 AM |
8095 | } |
| 8096 | } | |
| b34976b6 | 8097 | return TRUE; |
| 65f38f15 AM |
8098 | } |
| 8099 | ||
| 8100 | /* Set the sizes of the dynamic sections. */ | |
| 8101 | ||
| b34976b6 | 8102 | static bfd_boolean |
| 4ce794b7 AM |
8103 | ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 8104 | struct bfd_link_info *info) | |
| 65f38f15 AM |
8105 | { |
| 8106 | struct ppc_link_hash_table *htab; | |
| 8107 | bfd *dynobj; | |
| 8108 | asection *s; | |
| b34976b6 | 8109 | bfd_boolean relocs; |
| 65f38f15 AM |
8110 | bfd *ibfd; |
| 8111 | ||
| 8112 | htab = ppc_hash_table (info); | |
| 8113 | dynobj = htab->elf.dynobj; | |
| 8114 | if (dynobj == NULL) | |
| 8115 | abort (); | |
| 8116 | ||
| 8117 | if (htab->elf.dynamic_sections_created) | |
| 8118 | { | |
| 8119 | /* Set the contents of the .interp section to the interpreter. */ | |
| 36af4a4e | 8120 | if (info->executable) |
| 65f38f15 AM |
8121 | { |
| 8122 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
| 8123 | if (s == NULL) | |
| 8124 | abort (); | |
| eea6121a | 8125 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
8126 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 8127 | } | |
| 8128 | } | |
| 8129 | ||
| 8130 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 8131 | relocs. */ | |
| 8132 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
| 8133 | { | |
| 411e1bfb AM |
8134 | struct got_entry **lgot_ents; |
| 8135 | struct got_entry **end_lgot_ents; | |
| e7b938ca | 8136 | char *lgot_masks; |
| 65f38f15 AM |
8137 | bfd_size_type locsymcount; |
| 8138 | Elf_Internal_Shdr *symtab_hdr; | |
| 8139 | asection *srel; | |
| 8140 | ||
| 0c8d6e5c | 8141 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
8142 | continue; |
| 8143 | ||
| 8144 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 8145 | { | |
| ec338859 | 8146 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 8147 | |
| 6edfbbad | 8148 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 8149 | { |
| ec338859 AM |
8150 | if (!bfd_is_abs_section (p->sec) |
| 8151 | && bfd_is_abs_section (p->sec->output_section)) | |
| 8152 | { | |
| 8153 | /* Input section has been discarded, either because | |
| 8154 | it is a copy of a linkonce section or due to | |
| 8155 | linker script /DISCARD/, so we'll be discarding | |
| 8156 | the relocs too. */ | |
| 8157 | } | |
| 248866a8 | 8158 | else if (p->count != 0) |
| ec338859 AM |
8159 | { |
| 8160 | srel = elf_section_data (p->sec)->sreloc; | |
| eea6121a | 8161 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
8162 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 8163 | info->flags |= DF_TEXTREL; | |
| ec338859 | 8164 | } |
| 65f38f15 AM |
8165 | } |
| 8166 | } | |
| 8167 | ||
| 411e1bfb AM |
8168 | lgot_ents = elf_local_got_ents (ibfd); |
| 8169 | if (!lgot_ents) | |
| 65f38f15 AM |
8170 | continue; |
| 8171 | ||
| 0ffa91dd | 8172 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 8173 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 8174 | end_lgot_ents = lgot_ents + locsymcount; |
| e7b938ca | 8175 | lgot_masks = (char *) end_lgot_ents; |
| e717da7e AM |
8176 | s = ppc64_elf_tdata (ibfd)->got; |
| 8177 | srel = ppc64_elf_tdata (ibfd)->relgot; | |
| e7b938ca | 8178 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 8179 | { |
| 411e1bfb AM |
8180 | struct got_entry *ent; |
| 8181 | ||
| 8182 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| 8183 | if (ent->got.refcount > 0) | |
| 8184 | { | |
| e7b938ca | 8185 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 8186 | { |
| 102890f0 AM |
8187 | ppc64_tlsld_got (ibfd)->refcount += 1; |
| 8188 | ent->got.offset = (bfd_vma) -1; | |
| 411e1bfb AM |
8189 | } |
| 8190 | else | |
| 8191 | { | |
| eea6121a | 8192 | ent->got.offset = s->size; |
| e7b938ca | 8193 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 411e1bfb | 8194 | { |
| eea6121a | 8195 | s->size += 16; |
| 411e1bfb | 8196 | if (info->shared) |
| eea6121a | 8197 | srel->size += 2 * sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
8198 | } |
| 8199 | else | |
| 8200 | { | |
| eea6121a | 8201 | s->size += 8; |
| 411e1bfb | 8202 | if (info->shared) |
| eea6121a | 8203 | srel->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
8204 | } |
| 8205 | } | |
| 8206 | } | |
| 8207 | else | |
| 8208 | ent->got.offset = (bfd_vma) -1; | |
| 65f38f15 AM |
8209 | } |
| 8210 | } | |
| 8211 | ||
| 8212 | /* Allocate global sym .plt and .got entries, and space for global | |
| 8213 | sym dynamic relocs. */ | |
| 4ce794b7 | 8214 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| 65f38f15 | 8215 | |
| 102890f0 AM |
8216 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8217 | { | |
| 0c8d6e5c | 8218 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
8219 | continue; |
| 8220 | ||
| 8221 | if (ppc64_tlsld_got (ibfd)->refcount > 0) | |
| 8222 | { | |
| 8223 | s = ppc64_elf_tdata (ibfd)->got; | |
| 8224 | ppc64_tlsld_got (ibfd)->offset = s->size; | |
| 8225 | s->size += 16; | |
| 8226 | if (info->shared) | |
| 8227 | { | |
| 8228 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 8229 | srel->size += sizeof (Elf64_External_Rela); | |
| 8230 | } | |
| 8231 | } | |
| 8232 | else | |
| 8233 | ppc64_tlsld_got (ibfd)->offset = (bfd_vma) -1; | |
| 8234 | } | |
| 8235 | ||
| 65f38f15 AM |
8236 | /* We now have determined the sizes of the various dynamic sections. |
| 8237 | Allocate memory for them. */ | |
| b34976b6 | 8238 | relocs = FALSE; |
| 65f38f15 AM |
8239 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 8240 | { | |
| 8241 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 8242 | continue; | |
| 8243 | ||
| 4ce794b7 | 8244 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
8245 | /* These haven't been allocated yet; don't strip. */ |
| 8246 | continue; | |
| e717da7e AM |
8247 | else if (s == htab->got |
| 8248 | || s == htab->plt | |
| c456f082 AM |
8249 | || s == htab->glink |
| 8250 | || s == htab->dynbss) | |
| 65f38f15 AM |
8251 | { |
| 8252 | /* Strip this section if we don't need it; see the | |
| 8253 | comment below. */ | |
| 5bd4f169 | 8254 | } |
| 0112cd26 | 8255 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 5bd4f169 | 8256 | { |
| c456f082 | 8257 | if (s->size != 0) |
| 5bd4f169 | 8258 | { |
| 4ce794b7 | 8259 | if (s != htab->relplt) |
| b34976b6 | 8260 | relocs = TRUE; |
| 5bd4f169 AM |
8261 | |
| 8262 | /* We use the reloc_count field as a counter if we need | |
| 8263 | to copy relocs into the output file. */ | |
| 8264 | s->reloc_count = 0; | |
| 8265 | } | |
| 8266 | } | |
| 65f38f15 | 8267 | else |
| 5bd4f169 AM |
8268 | { |
| 8269 | /* It's not one of our sections, so don't allocate space. */ | |
| 8270 | continue; | |
| 8271 | } | |
| 8272 | ||
| eea6121a | 8273 | if (s->size == 0) |
| 5bd4f169 | 8274 | { |
| c456f082 AM |
8275 | /* If we don't need this section, strip it from the |
| 8276 | output file. This is mostly to handle .rela.bss and | |
| 8277 | .rela.plt. We must create both sections in | |
| 8278 | create_dynamic_sections, because they must be created | |
| 8279 | before the linker maps input sections to output | |
| 8280 | sections. The linker does that before | |
| 8281 | adjust_dynamic_symbol is called, and it is that | |
| 8282 | function which decides whether anything needs to go | |
| 8283 | into these sections. */ | |
| 8423293d | 8284 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
8285 | continue; |
| 8286 | } | |
| 8287 | ||
| c456f082 | 8288 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
8289 | continue; |
| 8290 | ||
| 65f38f15 AM |
8291 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 8292 | here in case unused entries are not reclaimed before the | |
| 8293 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
8294 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 8295 | sections instead of garbage. | |
| 8296 | We also rely on the section contents being zero when writing | |
| 8297 | the GOT. */ | |
| eea6121a | 8298 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 8299 | if (s->contents == NULL) |
| b34976b6 | 8300 | return FALSE; |
| 5bd4f169 AM |
8301 | } |
| 8302 | ||
| e717da7e AM |
8303 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 8304 | { | |
| 0c8d6e5c | 8305 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
8306 | continue; |
| 8307 | ||
| e717da7e AM |
8308 | s = ppc64_elf_tdata (ibfd)->got; |
| 8309 | if (s != NULL && s != htab->got) | |
| 8310 | { | |
| eea6121a | 8311 | if (s->size == 0) |
| 8423293d | 8312 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
8313 | else |
| 8314 | { | |
| eea6121a | 8315 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
8316 | if (s->contents == NULL) |
| 8317 | return FALSE; | |
| 8318 | } | |
| 8319 | } | |
| 8320 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 8321 | if (s != NULL) | |
| 8322 | { | |
| eea6121a | 8323 | if (s->size == 0) |
| 8423293d | 8324 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
8325 | else |
| 8326 | { | |
| eea6121a | 8327 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
8328 | if (s->contents == NULL) |
| 8329 | return FALSE; | |
| 8330 | relocs = TRUE; | |
| 8331 | s->reloc_count = 0; | |
| 8332 | } | |
| 8333 | } | |
| 8334 | } | |
| 8335 | ||
| e86ce104 | 8336 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 AM |
8337 | { |
| 8338 | /* Add some entries to the .dynamic section. We fill in the | |
| 8339 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 8340 | must add the entries now so that we get the correct size for | |
| 8341 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 8342 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 8343 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 8344 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 8345 | |
| 36af4a4e | 8346 | if (info->executable) |
| 5bd4f169 | 8347 | { |
| dc810e39 | 8348 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 8349 | return FALSE; |
| 5bd4f169 AM |
8350 | } |
| 8351 | ||
| eea6121a | 8352 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5bd4f169 | 8353 | { |
| dc810e39 AM |
8354 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 8355 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 8356 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
8357 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 8358 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 8359 | return FALSE; |
| 5bd4f169 AM |
8360 | } |
| 8361 | ||
| 19397422 AM |
8362 | if (NO_OPD_RELOCS) |
| 8363 | { | |
| 8364 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 8365 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 8366 | return FALSE; |
| 19397422 AM |
8367 | } |
| 8368 | ||
| 5bd4f169 AM |
8369 | if (relocs) |
| 8370 | { | |
| dc810e39 AM |
8371 | if (!add_dynamic_entry (DT_RELA, 0) |
| 8372 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 8373 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 8374 | return FALSE; |
| 5bd4f169 | 8375 | |
| 65f38f15 AM |
8376 | /* If any dynamic relocs apply to a read-only section, |
| 8377 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 8378 | if ((info->flags & DF_TEXTREL) == 0) |
| 4ce794b7 | 8379 | elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info); |
| 5bd4f169 | 8380 | |
| 65f38f15 | 8381 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 8382 | { |
| 65f38f15 | 8383 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 8384 | return FALSE; |
| 5bd4f169 | 8385 | } |
| 5bd4f169 | 8386 | } |
| 5bd4f169 | 8387 | } |
| 65f38f15 | 8388 | #undef add_dynamic_entry |
| 5bd4f169 | 8389 | |
| b34976b6 | 8390 | return TRUE; |
| 5bd4f169 AM |
8391 | } |
| 8392 | ||
| 721956f4 | 8393 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 8394 | |
| 4ce794b7 AM |
8395 | static inline enum ppc_stub_type |
| 8396 | ppc_type_of_stub (asection *input_sec, | |
| 8397 | const Elf_Internal_Rela *rel, | |
| 8398 | struct ppc_link_hash_entry **hash, | |
| 8399 | bfd_vma destination) | |
| 5bd4f169 | 8400 | { |
| 721956f4 AM |
8401 | struct ppc_link_hash_entry *h = *hash; |
| 8402 | bfd_vma location; | |
| 8403 | bfd_vma branch_offset; | |
| 8404 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 8405 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 8406 | |
| 721956f4 AM |
8407 | if (h != NULL) |
| 8408 | { | |
| 7fe2b9a6 AM |
8409 | struct ppc_link_hash_entry *fdh = h; |
| 8410 | if (fdh->oh != NULL | |
| 8411 | && fdh->oh->is_func_descriptor) | |
| 8412 | fdh = fdh->oh; | |
| 8387904d | 8413 | |
| 7fe2b9a6 | 8414 | if (fdh->elf.dynindx != -1) |
| 5bd4f169 | 8415 | { |
| 411e1bfb | 8416 | struct plt_entry *ent; |
| 8387904d | 8417 | |
| 7fe2b9a6 | 8418 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
8419 | if (ent->addend == rel->r_addend |
| 8420 | && ent->plt.offset != (bfd_vma) -1) | |
| 8421 | { | |
| 7fe2b9a6 | 8422 | *hash = fdh; |
| 411e1bfb AM |
8423 | return ppc_stub_plt_call; |
| 8424 | } | |
| 5bd4f169 AM |
8425 | } |
| 8426 | ||
| 7fe2b9a6 AM |
8427 | /* Here, we know we don't have a plt entry. If we don't have a |
| 8428 | either a defined function descriptor or a defined entry symbol | |
| 8429 | in a regular object file, then it is pointless trying to make | |
| 8430 | any other type of stub. */ | |
| 8431 | if (!((fdh->elf.root.type == bfd_link_hash_defined | |
| 8432 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 8433 | && fdh->elf.root.u.def.section->output_section != NULL) | |
| 8434 | && !((h->elf.root.type == bfd_link_hash_defined | |
| 8435 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 8436 | && h->elf.root.u.def.section->output_section != NULL)) | |
| 721956f4 | 8437 | return ppc_stub_none; |
| 5d1634d7 | 8438 | } |
| 5d1634d7 | 8439 | |
| 721956f4 AM |
8440 | /* Determine where the call point is. */ |
| 8441 | location = (input_sec->output_offset | |
| 8442 | + input_sec->output_section->vma | |
| 8443 | + rel->r_offset); | |
| 5d1634d7 | 8444 | |
| 721956f4 AM |
8445 | branch_offset = destination - location; |
| 8446 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 8447 | |
| 721956f4 AM |
8448 | /* Determine if a long branch stub is needed. */ |
| 8449 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 8450 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 8451 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 8452 | |
| 721956f4 AM |
8453 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset) |
| 8454 | /* We need a stub. Figure out whether a long_branch or plt_branch | |
| 8455 | is needed later. */ | |
| 8456 | return ppc_stub_long_branch; | |
| 5d1634d7 | 8457 | |
| 721956f4 | 8458 | return ppc_stub_none; |
| 5d1634d7 AM |
8459 | } |
| 8460 | ||
| 8461 | /* Build a .plt call stub. */ | |
| 8462 | ||
| 4ce794b7 | 8463 | static inline bfd_byte * |
| 176a0d42 | 8464 | build_plt_stub (bfd *obfd, bfd_byte *p, int offset, Elf_Internal_Rela *r) |
| 5d1634d7 AM |
8465 | { |
| 8466 | #define PPC_LO(v) ((v) & 0xffff) | |
| 8467 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 8468 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 8469 | ||
| ac2df442 AM |
8470 | if (PPC_HA (offset) != 0) |
| 8471 | { | |
| 176a0d42 AM |
8472 | if (r != NULL) |
| 8473 | { | |
| 8474 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 8475 | r[1].r_offset = r[0].r_offset + 8; | |
| 8476 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8477 | r[1].r_addend = r[0].r_addend; | |
| 8478 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8479 | { | |
| 8480 | r[2].r_offset = r[1].r_offset + 4; | |
| 8481 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 8482 | r[2].r_addend = r[0].r_addend; | |
| 8483 | } | |
| 8484 | else | |
| 8485 | { | |
| 8486 | r[2].r_offset = r[1].r_offset + 8; | |
| 8487 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8488 | r[2].r_addend = r[0].r_addend + 8; | |
| 8489 | r[3].r_offset = r[2].r_offset + 4; | |
| 8490 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8491 | r[3].r_addend = r[0].r_addend + 16; | |
| 8492 | } | |
| 8493 | } | |
| ac2df442 AM |
8494 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; |
| 8495 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; | |
| 8496 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4; | |
| 8497 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8498 | { | |
| 8499 | bfd_put_32 (obfd, ADDI_R12_R12 | PPC_LO (offset), p), p += 4; | |
| 8500 | offset = 0; | |
| 8501 | } | |
| 8502 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
| 8503 | bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset + 8), p), p += 4; | |
| 8504 | bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset + 16), p), p += 4; | |
| 8505 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 8506 | } | |
| 8507 | else | |
| 8508 | { | |
| 176a0d42 AM |
8509 | if (r != NULL) |
| 8510 | { | |
| 8511 | r[0].r_offset += 4; | |
| 8512 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8513 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8514 | { | |
| 8515 | r[1].r_offset = r[0].r_offset + 4; | |
| 8516 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 8517 | r[1].r_addend = r[0].r_addend; | |
| 8518 | } | |
| 8519 | else | |
| 8520 | { | |
| 8521 | r[1].r_offset = r[0].r_offset + 8; | |
| 8522 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8523 | r[1].r_addend = r[0].r_addend + 16; | |
| 8524 | r[2].r_offset = r[1].r_offset + 4; | |
| 8525 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8526 | r[2].r_addend = r[0].r_addend + 8; | |
| 8527 | } | |
| 8528 | } | |
| ac2df442 AM |
8529 | bfd_put_32 (obfd, STD_R2_40R1, p), p += 4; |
| 8530 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset), p), p += 4; | |
| 8531 | if (PPC_HA (offset + 16) != PPC_HA (offset)) | |
| 8532 | { | |
| 8533 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 8534 | offset = 0; | |
| 8535 | } | |
| 8536 | bfd_put_32 (obfd, MTCTR_R11, p), p += 4; | |
| 8537 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 8538 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 8539 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 8540 | } | |
| 5d1634d7 AM |
8541 | return p; |
| 8542 | } | |
| 8543 | ||
| 176a0d42 AM |
8544 | static Elf_Internal_Rela * |
| 8545 | get_relocs (asection *sec, int count) | |
| 8546 | { | |
| 8547 | Elf_Internal_Rela *relocs; | |
| 8548 | struct bfd_elf_section_data *elfsec_data; | |
| 8549 | ||
| 8550 | elfsec_data = elf_section_data (sec); | |
| 8551 | relocs = elfsec_data->relocs; | |
| 8552 | if (relocs == NULL) | |
| 8553 | { | |
| 8554 | bfd_size_type relsize; | |
| 8555 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 8556 | relocs = bfd_alloc (sec->owner, relsize); | |
| 8557 | if (relocs == NULL) | |
| 8558 | return NULL; | |
| 8559 | elfsec_data->relocs = relocs; | |
| 8560 | elfsec_data->rel_hdr.sh_size = (sec->reloc_count | |
| 8561 | * sizeof (Elf64_External_Rela)); | |
| 8562 | elfsec_data->rel_hdr.sh_entsize = sizeof (Elf64_External_Rela); | |
| 8563 | sec->reloc_count = 0; | |
| 8564 | } | |
| 8565 | relocs += sec->reloc_count; | |
| 8566 | sec->reloc_count += count; | |
| 8567 | return relocs; | |
| 8568 | } | |
| 8569 | ||
| b34976b6 | 8570 | static bfd_boolean |
| 4ce794b7 | 8571 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 8572 | { |
| 721956f4 AM |
8573 | struct ppc_stub_hash_entry *stub_entry; |
| 8574 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
8575 | struct bfd_link_info *info; |
| 8576 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
8577 | bfd_byte *loc; |
| 8578 | bfd_byte *p; | |
| 411e1bfb | 8579 | struct plt_entry *ent; |
| ee75fd95 | 8580 | bfd_vma dest, off; |
| 721956f4 | 8581 | int size; |
| 176a0d42 | 8582 | Elf_Internal_Rela *r; |
| 5d1634d7 | 8583 | |
| 721956f4 AM |
8584 | /* Massage our args to the form they really have. */ |
| 8585 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 8586 | info = in_arg; |
| 5d1634d7 | 8587 | |
| 5d1634d7 AM |
8588 | htab = ppc_hash_table (info); |
| 8589 | ||
| 721956f4 | 8590 | /* Make a note of the offset within the stubs for this entry. */ |
| eea6121a | 8591 | stub_entry->stub_offset = stub_entry->stub_sec->size; |
| 97b639ba | 8592 | loc = stub_entry->stub_sec->contents + stub_entry->stub_offset; |
| 721956f4 | 8593 | |
| 4ce794b7 | 8594 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 8595 | switch (stub_entry->stub_type) |
| 5d1634d7 | 8596 | { |
| 721956f4 | 8597 | case ppc_stub_long_branch: |
| ad8e1ba5 | 8598 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 8599 | /* Branches are relative. This is where we are going to. */ |
| ee75fd95 AM |
8600 | off = dest = (stub_entry->target_value |
| 8601 | + stub_entry->target_section->output_offset | |
| 8602 | + stub_entry->target_section->output_section->vma); | |
| 5d1634d7 | 8603 | |
| 721956f4 AM |
8604 | /* And this is where we are coming from. */ |
| 8605 | off -= (stub_entry->stub_offset | |
| 97b639ba AM |
8606 | + stub_entry->stub_sec->output_offset |
| 8607 | + stub_entry->stub_sec->output_section->vma); | |
| e86ce104 | 8608 | |
| ac2df442 AM |
8609 | size = 4; |
| 8610 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 AM |
8611 | { |
| 8612 | bfd_vma r2off; | |
| 8613 | ||
| 8614 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
| 8615 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 97b639ba | 8616 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 8617 | loc += 4; |
| ac2df442 AM |
8618 | size = 12; |
| 8619 | if (PPC_HA (r2off) != 0) | |
| 8620 | { | |
| 8621 | size = 16; | |
| 8622 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 8623 | loc += 4; | |
| 8624 | } | |
| 97b639ba | 8625 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 | 8626 | loc += 4; |
| ac2df442 | 8627 | off -= size - 4; |
| ad8e1ba5 | 8628 | } |
| 97b639ba | 8629 | bfd_put_32 (htab->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 8630 | |
| 5c3dead3 AM |
8631 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 8632 | { | |
| 8633 | (*_bfd_error_handler) (_("long branch stub `%s' offset overflow"), | |
| 8634 | stub_entry->root.string); | |
| 8635 | htab->stub_error = TRUE; | |
| 8636 | return FALSE; | |
| 8637 | } | |
| ee75fd95 AM |
8638 | |
| 8639 | if (info->emitrelocations) | |
| 8640 | { | |
| 176a0d42 AM |
8641 | r = get_relocs (stub_entry->stub_sec, 1); |
| 8642 | if (r == NULL) | |
| 8643 | return FALSE; | |
| ee75fd95 AM |
8644 | r->r_offset = loc - stub_entry->stub_sec->contents; |
| 8645 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); | |
| 8646 | r->r_addend = dest; | |
| 8647 | if (stub_entry->h != NULL) | |
| 8648 | { | |
| 8649 | struct elf_link_hash_entry **hashes; | |
| 8650 | unsigned long symndx; | |
| 8651 | struct ppc_link_hash_entry *h; | |
| 8652 | ||
| 8653 | hashes = elf_sym_hashes (htab->stub_bfd); | |
| 8654 | if (hashes == NULL) | |
| 8655 | { | |
| 8656 | bfd_size_type hsize; | |
| 8657 | ||
| 8658 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| 8659 | hashes = bfd_zalloc (htab->stub_bfd, hsize); | |
| 8660 | if (hashes == NULL) | |
| 8661 | return FALSE; | |
| 8662 | elf_sym_hashes (htab->stub_bfd) = hashes; | |
| 8663 | htab->stub_globals = 1; | |
| 8664 | } | |
| 8665 | symndx = htab->stub_globals++; | |
| 8666 | h = stub_entry->h; | |
| 8667 | hashes[symndx] = &h->elf; | |
| 8668 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 8669 | if (h->oh != NULL && h->oh->is_func) | |
| 8670 | h = h->oh; | |
| 8671 | if (h->elf.root.u.def.section != stub_entry->target_section) | |
| 8672 | /* H is an opd symbol. The addend must be zero. */ | |
| 8673 | r->r_addend = 0; | |
| 8674 | else | |
| 8675 | { | |
| 8676 | off = (h->elf.root.u.def.value | |
| 8677 | + h->elf.root.u.def.section->output_offset | |
| 8678 | + h->elf.root.u.def.section->output_section->vma); | |
| 8679 | r->r_addend -= off; | |
| 8680 | } | |
| 8681 | } | |
| 8682 | } | |
| 721956f4 | 8683 | break; |
| e86ce104 | 8684 | |
| 721956f4 | 8685 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 8686 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
8687 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 8688 | stub_entry->root.string + 9, | |
| b34976b6 | 8689 | FALSE, FALSE); |
| 721956f4 AM |
8690 | if (br_entry == NULL) |
| 8691 | { | |
| 8692 | (*_bfd_error_handler) (_("can't find branch stub `%s'"), | |
| 5c3dead3 | 8693 | stub_entry->root.string); |
| b34976b6 AM |
8694 | htab->stub_error = TRUE; |
| 8695 | return FALSE; | |
| 721956f4 AM |
8696 | } |
| 8697 | ||
| 176a0d42 AM |
8698 | dest = (stub_entry->target_value |
| 8699 | + stub_entry->target_section->output_offset | |
| 8700 | + stub_entry->target_section->output_section->vma); | |
| 721956f4 | 8701 | |
| 176a0d42 | 8702 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 8703 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 8704 | |
| f94498ff | 8705 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 8706 | { |
| f94498ff | 8707 | br_entry->iter = 0; |
| 84f5d08e | 8708 | |
| f94498ff | 8709 | if (htab->relbrlt != NULL) |
| 84f5d08e | 8710 | { |
| f94498ff AM |
8711 | /* Create a reloc for the branch lookup table entry. */ |
| 8712 | Elf_Internal_Rela rela; | |
| 8713 | bfd_byte *rl; | |
| 8714 | ||
| 8715 | rela.r_offset = (br_entry->offset | |
| 8716 | + htab->brlt->output_offset | |
| 8717 | + htab->brlt->output_section->vma); | |
| 8718 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 8719 | rela.r_addend = dest; |
| f94498ff AM |
8720 | |
| 8721 | rl = htab->relbrlt->contents; | |
| 8722 | rl += (htab->relbrlt->reloc_count++ | |
| 8723 | * sizeof (Elf64_External_Rela)); | |
| 8724 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 8725 | } | |
| 8726 | else if (info->emitrelocations) | |
| 8727 | { | |
| 176a0d42 AM |
8728 | r = get_relocs (htab->brlt, 1); |
| 8729 | if (r == NULL) | |
| 8730 | return FALSE; | |
| 8731 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 8732 | normal reloc processing. Symbols and offsets are not | |
| 8733 | translated from input file to output file form, so | |
| 8734 | set up the offset per the output file. */ | |
| f94498ff AM |
8735 | r->r_offset = (br_entry->offset |
| 8736 | + htab->brlt->output_offset | |
| 8737 | + htab->brlt->output_section->vma); | |
| 8738 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 8739 | r->r_addend = dest; |
| 84f5d08e | 8740 | } |
| 84f5d08e | 8741 | } |
| 721956f4 | 8742 | |
| 176a0d42 AM |
8743 | dest = (br_entry->offset |
| 8744 | + htab->brlt->output_offset | |
| 8745 | + htab->brlt->output_section->vma); | |
| 8746 | ||
| 8747 | off = (dest | |
| 4ce794b7 | 8748 | - elf_gp (htab->brlt->output_section->owner) |
| ad8e1ba5 | 8749 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 8750 | |
| ad8e1ba5 | 8751 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 AM |
8752 | { |
| 8753 | (*_bfd_error_handler) | |
| e86ce104 | 8754 | (_("linkage table error against `%s'"), |
| 721956f4 | 8755 | stub_entry->root.string); |
| 5d1634d7 | 8756 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
8757 | htab->stub_error = TRUE; |
| 8758 | return FALSE; | |
| 5d1634d7 | 8759 | } |
| 41bd81ab | 8760 | |
| 176a0d42 AM |
8761 | if (info->emitrelocations) |
| 8762 | { | |
| 8763 | r = get_relocs (stub_entry->stub_sec, 1 + (PPC_HA (off) != 0)); | |
| 8764 | if (r == NULL) | |
| 8765 | return FALSE; | |
| 8766 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
8767 | if (bfd_big_endian (info->output_bfd)) |
| 8768 | r[0].r_offset += 2; | |
| 176a0d42 AM |
8769 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 8770 | r[0].r_offset += 4; | |
| 8771 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 8772 | r[0].r_addend = dest; | |
| 8773 | if (PPC_HA (off) != 0) | |
| 8774 | { | |
| 8775 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 8776 | r[1].r_offset = r[0].r_offset + 4; | |
| 8777 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 8778 | r[1].r_addend = r[0].r_addend; | |
| 8779 | } | |
| 8780 | } | |
| 8781 | ||
| ad8e1ba5 AM |
8782 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 8783 | { | |
| 176a0d42 | 8784 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
8785 | { |
| 8786 | size = 16; | |
| 176a0d42 | 8787 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 8788 | loc += 4; |
| 176a0d42 | 8789 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
8790 | } |
| 8791 | else | |
| 8792 | { | |
| 8793 | size = 12; | |
| 176a0d42 | 8794 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
| ac2df442 | 8795 | } |
| ad8e1ba5 AM |
8796 | } |
| 8797 | else | |
| 8798 | { | |
| 8799 | bfd_vma r2off; | |
| 8800 | ||
| 8801 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off | |
| 8802 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 97b639ba | 8803 | bfd_put_32 (htab->stub_bfd, STD_R2_40R1, loc); |
| ad8e1ba5 | 8804 | loc += 4; |
| ac2df442 | 8805 | size = 20; |
| 176a0d42 | 8806 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
8807 | { |
| 8808 | size += 4; | |
| 176a0d42 | 8809 | bfd_put_32 (htab->stub_bfd, ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 8810 | loc += 4; |
| 176a0d42 | 8811 | bfd_put_32 (htab->stub_bfd, LD_R11_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
8812 | loc += 4; |
| 8813 | } | |
| 8814 | else | |
| 8815 | { | |
| 176a0d42 | 8816 | bfd_put_32 (htab->stub_bfd, LD_R11_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
8817 | loc += 4; |
| 8818 | } | |
| 8819 | ||
| 8820 | if (PPC_HA (r2off) != 0) | |
| 8821 | { | |
| 8822 | size += 4; | |
| 8823 | bfd_put_32 (htab->stub_bfd, ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 8824 | loc += 4; | |
| 8825 | } | |
| 97b639ba | 8826 | bfd_put_32 (htab->stub_bfd, ADDI_R2_R2 | PPC_LO (r2off), loc); |
| ad8e1ba5 AM |
8827 | } |
| 8828 | loc += 4; | |
| 97b639ba | 8829 | bfd_put_32 (htab->stub_bfd, MTCTR_R11, loc); |
| ad8e1ba5 | 8830 | loc += 4; |
| 97b639ba | 8831 | bfd_put_32 (htab->stub_bfd, BCTR, loc); |
| 721956f4 | 8832 | break; |
| 5d1634d7 | 8833 | |
| 721956f4 | 8834 | case ppc_stub_plt_call: |
| c862ae31 AM |
8835 | /* Do the best we can for shared libraries built without |
| 8836 | exporting ".foo" for each "foo". This can happen when symbol | |
| 8837 | versioning scripts strip all bar a subset of symbols. */ | |
| 8387904d AM |
8838 | if (stub_entry->h->oh != NULL |
| 8839 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defined | |
| 34814b9f | 8840 | && stub_entry->h->oh->elf.root.type != bfd_link_hash_defweak) |
| c862ae31 AM |
8841 | { |
| 8842 | /* Point the symbol at the stub. There may be multiple stubs, | |
| 8843 | we don't really care; The main thing is to make this sym | |
| 8f3bab57 AM |
8844 | defined somewhere. Maybe defining the symbol in the stub |
| 8845 | section is a silly idea. If we didn't do this, htab->top_id | |
| 8846 | could disappear. */ | |
| 34814b9f AM |
8847 | stub_entry->h->oh->elf.root.type = bfd_link_hash_defined; |
| 8848 | stub_entry->h->oh->elf.root.u.def.section = stub_entry->stub_sec; | |
| 8849 | stub_entry->h->oh->elf.root.u.def.value = stub_entry->stub_offset; | |
| c862ae31 AM |
8850 | } |
| 8851 | ||
| 721956f4 | 8852 | /* Now build the stub. */ |
| 176a0d42 | 8853 | dest = (bfd_vma) -1; |
| 411e1bfb AM |
8854 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 8855 | if (ent->addend == stub_entry->addend) | |
| 8856 | { | |
| 176a0d42 | 8857 | dest = ent->plt.offset; |
| 411e1bfb AM |
8858 | break; |
| 8859 | } | |
| 176a0d42 | 8860 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
8861 | abort (); |
| 8862 | ||
| 176a0d42 AM |
8863 | dest &= ~ (bfd_vma) 1; |
| 8864 | dest += (htab->plt->output_offset | |
| 8865 | + htab->plt->output_section->vma); | |
| 8866 | ||
| 8867 | off = (dest | |
| 8868 | - elf_gp (htab->plt->output_section->owner) | |
| 8869 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 721956f4 | 8870 | |
| ad8e1ba5 | 8871 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 AM |
8872 | { |
| 8873 | (*_bfd_error_handler) | |
| 8874 | (_("linkage table error against `%s'"), | |
| 8875 | stub_entry->h->elf.root.root.string); | |
| 8876 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 AM |
8877 | htab->stub_error = TRUE; |
| 8878 | return FALSE; | |
| 721956f4 AM |
8879 | } |
| 8880 | ||
| 176a0d42 AM |
8881 | r = NULL; |
| 8882 | if (info->emitrelocations) | |
| 8883 | { | |
| 8884 | r = get_relocs (stub_entry->stub_sec, | |
| 8885 | (2 + (PPC_HA (off) != 0) | |
| 8886 | + (PPC_HA (off + 16) == PPC_HA (off)))); | |
| 8887 | if (r == NULL) | |
| 8888 | return FALSE; | |
| 8889 | r[0].r_offset = loc - stub_entry->stub_sec->contents; | |
| 7cfbafbc AM |
8890 | if (bfd_big_endian (info->output_bfd)) |
| 8891 | r[0].r_offset += 2; | |
| 176a0d42 AM |
8892 | r[0].r_addend = dest; |
| 8893 | } | |
| 8894 | p = build_plt_stub (htab->stub_bfd, loc, off, r); | |
| 721956f4 AM |
8895 | size = p - loc; |
| 8896 | break; | |
| 8897 | ||
| 8898 | default: | |
| 8899 | BFD_FAIL (); | |
| b34976b6 | 8900 | return FALSE; |
| 721956f4 AM |
8901 | } |
| 8902 | ||
| eea6121a | 8903 | stub_entry->stub_sec->size += size; |
| 97b639ba | 8904 | |
| ee75fd95 | 8905 | if (htab->emit_stub_syms) |
| 97b639ba AM |
8906 | { |
| 8907 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
8908 | size_t len1, len2; |
| 8909 | char *name; | |
| 8910 | const char *const stub_str[] = { "long_branch", | |
| 8911 | "long_branch_r2off", | |
| 8912 | "plt_branch", | |
| 8913 | "plt_branch_r2off", | |
| 8914 | "plt_call" }; | |
| 8915 | ||
| 8916 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 8917 | len2 = strlen (stub_entry->root.string); | |
| 8918 | name = bfd_malloc (len1 + len2 + 2); | |
| 8919 | if (name == NULL) | |
| 8920 | return FALSE; | |
| 8921 | memcpy (name, stub_entry->root.string, 9); | |
| 8922 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 8923 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 8924 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
8925 | if (h == NULL) |
| 8926 | return FALSE; | |
| 8927 | if (h->root.type == bfd_link_hash_new) | |
| 8928 | { | |
| 8929 | h->root.type = bfd_link_hash_defined; | |
| 8930 | h->root.u.def.section = stub_entry->stub_sec; | |
| 8931 | h->root.u.def.value = stub_entry->stub_offset; | |
| f5385ebf AM |
8932 | h->ref_regular = 1; |
| 8933 | h->def_regular = 1; | |
| 8934 | h->ref_regular_nonweak = 1; | |
| 8935 | h->forced_local = 1; | |
| 8936 | h->non_elf = 0; | |
| 97b639ba AM |
8937 | } |
| 8938 | } | |
| 8939 | ||
| b34976b6 | 8940 | return TRUE; |
| 721956f4 AM |
8941 | } |
| 8942 | ||
| 8943 | /* As above, but don't actually build the stub. Just bump offset so | |
| 8944 | we know stub section sizes, and select plt_branch stubs where | |
| 8945 | long_branch stubs won't do. */ | |
| 8946 | ||
| b34976b6 | 8947 | static bfd_boolean |
| 4ce794b7 | 8948 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
8949 | { |
| 8950 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 8951 | struct bfd_link_info *info; |
| 721956f4 AM |
8952 | struct ppc_link_hash_table *htab; |
| 8953 | bfd_vma off; | |
| 8954 | int size; | |
| 8955 | ||
| 8956 | /* Massage our args to the form they really have. */ | |
| 8957 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
8958 | info = in_arg; |
| 8959 | ||
| 8960 | htab = ppc_hash_table (info); | |
| 721956f4 AM |
8961 | |
| 8962 | if (stub_entry->stub_type == ppc_stub_plt_call) | |
| 8963 | { | |
| 411e1bfb | 8964 | struct plt_entry *ent; |
| 58ac9f71 | 8965 | off = (bfd_vma) -1; |
| 411e1bfb AM |
8966 | for (ent = stub_entry->h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 8967 | if (ent->addend == stub_entry->addend) | |
| 8968 | { | |
| 8969 | off = ent->plt.offset & ~(bfd_vma) 1; | |
| 8970 | break; | |
| 8971 | } | |
| 58ac9f71 | 8972 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 8973 | abort (); |
| 4ce794b7 AM |
8974 | off += (htab->plt->output_offset |
| 8975 | + htab->plt->output_section->vma | |
| 8976 | - elf_gp (htab->plt->output_section->owner) | |
| ad8e1ba5 | 8977 | - htab->stub_group[stub_entry->id_sec->id].toc_off); |
| 721956f4 | 8978 | |
| ad8e1ba5 | 8979 | size = PLT_CALL_STUB_SIZE; |
| ac2df442 AM |
8980 | if (PPC_HA (off) == 0) |
| 8981 | size -= 4; | |
| 4ce794b7 | 8982 | if (PPC_HA (off + 16) != PPC_HA (off)) |
| 721956f4 | 8983 | size += 4; |
| 176a0d42 AM |
8984 | if (info->emitrelocations) |
| 8985 | { | |
| 8986 | stub_entry->stub_sec->reloc_count | |
| 8987 | += 2 + (PPC_HA (off) != 0) + (PPC_HA (off + 16) == PPC_HA (off)); | |
| 8988 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 8989 | } | |
| 721956f4 AM |
8990 | } |
| 8991 | else | |
| 8992 | { | |
| ad8e1ba5 AM |
8993 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 8994 | variants. */ | |
| ac2df442 AM |
8995 | bfd_vma r2off = 0; |
| 8996 | ||
| 721956f4 AM |
8997 | off = (stub_entry->target_value |
| 8998 | + stub_entry->target_section->output_offset | |
| 8999 | + stub_entry->target_section->output_section->vma); | |
| eea6121a | 9000 | off -= (stub_entry->stub_sec->size |
| 721956f4 AM |
9001 | + stub_entry->stub_sec->output_offset |
| 9002 | + stub_entry->stub_sec->output_section->vma); | |
| 9003 | ||
| ad8e1ba5 AM |
9004 | /* Reset the stub type from the plt variant in case we now |
| 9005 | can reach with a shorter stub. */ | |
| 9006 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 9007 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 9008 | ||
| 9009 | size = 4; | |
| 9010 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 9011 | { | |
| ac2df442 AM |
9012 | r2off = (htab->stub_group[stub_entry->target_section->id].toc_off |
| 9013 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 9014 | size = 12; | |
| 9015 | if (PPC_HA (r2off) != 0) | |
| 9016 | size = 16; | |
| 9017 | off -= size - 4; | |
| ad8e1ba5 AM |
9018 | } |
| 9019 | ||
| 9020 | /* If the branch offset if too big, use a ppc_stub_plt_branch. */ | |
| 721956f4 AM |
9021 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 9022 | { | |
| 9023 | struct ppc_branch_hash_entry *br_entry; | |
| 9024 | ||
| 9025 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 9026 | stub_entry->root.string + 9, | |
| b34976b6 | 9027 | TRUE, FALSE); |
| 721956f4 AM |
9028 | if (br_entry == NULL) |
| 9029 | { | |
| 9030 | (*_bfd_error_handler) (_("can't build branch stub `%s'"), | |
| 5c3dead3 | 9031 | stub_entry->root.string); |
| b34976b6 AM |
9032 | htab->stub_error = TRUE; |
| 9033 | return FALSE; | |
| 721956f4 AM |
9034 | } |
| 9035 | ||
| 9036 | if (br_entry->iter != htab->stub_iteration) | |
| 9037 | { | |
| 9038 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
9039 | br_entry->offset = htab->brlt->size; |
| 9040 | htab->brlt->size += 8; | |
| 63bc6f6c | 9041 | |
| ee75fd95 | 9042 | if (htab->relbrlt != NULL) |
| eea6121a | 9043 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
9044 | else if (info->emitrelocations) |
| 9045 | { | |
| 9046 | htab->brlt->reloc_count += 1; | |
| 9047 | htab->brlt->flags |= SEC_RELOC; | |
| 9048 | } | |
| 721956f4 | 9049 | } |
| ad8e1ba5 AM |
9050 | |
| 9051 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
9052 | off = (br_entry->offset |
| 9053 | + htab->brlt->output_offset | |
| 9054 | + htab->brlt->output_section->vma | |
| 9055 | - elf_gp (htab->brlt->output_section->owner) | |
| 9056 | - htab->stub_group[stub_entry->id_sec->id].toc_off); | |
| 9057 | ||
| 176a0d42 AM |
9058 | if (info->emitrelocations) |
| 9059 | { | |
| 9060 | stub_entry->stub_sec->reloc_count += 1 + (PPC_HA (off) != 0); | |
| 9061 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 9062 | } | |
| 9063 | ||
| ac2df442 AM |
9064 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 9065 | { | |
| 9066 | size = 12; | |
| 176a0d42 | 9067 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9068 | size = 16; |
| 9069 | } | |
| 9070 | else | |
| 9071 | { | |
| 9072 | size = 20; | |
| 176a0d42 | 9073 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
9074 | size += 4; |
| 9075 | ||
| 9076 | if (PPC_HA (r2off) != 0) | |
| 9077 | size += 4; | |
| 9078 | } | |
| 721956f4 | 9079 | } |
| 84f5d08e AM |
9080 | else if (info->emitrelocations) |
| 9081 | { | |
| 9082 | stub_entry->stub_sec->reloc_count += 1; | |
| 9083 | stub_entry->stub_sec->flags |= SEC_RELOC; | |
| 9084 | } | |
| 721956f4 AM |
9085 | } |
| 9086 | ||
| eea6121a | 9087 | stub_entry->stub_sec->size += size; |
| b34976b6 | 9088 | return TRUE; |
| 721956f4 AM |
9089 | } |
| 9090 | ||
| 9091 | /* Set up various things so that we can make a list of input sections | |
| 9092 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 9093 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
9094 | |
| 9095 | int | |
| 4c52953f AM |
9096 | ppc64_elf_setup_section_lists (bfd *output_bfd, |
| 9097 | struct bfd_link_info *info, | |
| 9098 | int no_multi_toc) | |
| 721956f4 AM |
9099 | { |
| 9100 | bfd *input_bfd; | |
| 734b6cf9 | 9101 | int top_id, top_index, id; |
| 721956f4 | 9102 | asection *section; |
| 734b6cf9 | 9103 | asection **input_list; |
| 721956f4 AM |
9104 | bfd_size_type amt; |
| 9105 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9106 | ||
| 4c52953f AM |
9107 | htab->no_multi_toc = no_multi_toc; |
| 9108 | ||
| 4ce794b7 | 9109 | if (htab->brlt == NULL) |
| 721956f4 AM |
9110 | return 0; |
| 9111 | ||
| 1e2f5b6e | 9112 | /* Find the top input section id. */ |
| 3d6f9012 | 9113 | for (input_bfd = info->input_bfds, top_id = 3; |
| 721956f4 AM |
9114 | input_bfd != NULL; |
| 9115 | input_bfd = input_bfd->link_next) | |
| 9116 | { | |
| 721956f4 AM |
9117 | for (section = input_bfd->sections; |
| 9118 | section != NULL; | |
| 9119 | section = section->next) | |
| 9120 | { | |
| 9121 | if (top_id < section->id) | |
| 9122 | top_id = section->id; | |
| 9123 | } | |
| 9124 | } | |
| 721956f4 | 9125 | |
| 8f3bab57 | 9126 | htab->top_id = top_id; |
| 721956f4 | 9127 | amt = sizeof (struct map_stub) * (top_id + 1); |
| 4ce794b7 | 9128 | htab->stub_group = bfd_zmalloc (amt); |
| 721956f4 AM |
9129 | if (htab->stub_group == NULL) |
| 9130 | return -1; | |
| 9131 | ||
| 3d6f9012 AM |
9132 | /* Set toc_off for com, und, abs and ind sections. */ |
| 9133 | for (id = 0; id < 3; id++) | |
| 9134 | htab->stub_group[id].toc_off = TOC_BASE_OFF; | |
| 721956f4 | 9135 | |
| 3d6f9012 | 9136 | elf_gp (output_bfd) = htab->toc_curr = ppc64_elf_toc (output_bfd); |
| 734b6cf9 AM |
9137 | |
| 9138 | /* We can't use output_bfd->section_count here to find the top output | |
| 9139 | section index as some sections may have been removed, and | |
| 8423293d | 9140 | strip_excluded_output_sections doesn't renumber the indices. */ |
| 734b6cf9 AM |
9141 | for (section = output_bfd->sections, top_index = 0; |
| 9142 | section != NULL; | |
| 9143 | section = section->next) | |
| 9144 | { | |
| 9145 | if (top_index < section->index) | |
| 9146 | top_index = section->index; | |
| 9147 | } | |
| 9148 | ||
| 9149 | htab->top_index = top_index; | |
| 9150 | amt = sizeof (asection *) * (top_index + 1); | |
| 4ce794b7 | 9151 | input_list = bfd_zmalloc (amt); |
| 734b6cf9 AM |
9152 | htab->input_list = input_list; |
| 9153 | if (input_list == NULL) | |
| 9154 | return -1; | |
| 9155 | ||
| 721956f4 AM |
9156 | return 1; |
| 9157 | } | |
| 9158 | ||
| e717da7e AM |
9159 | /* The linker repeatedly calls this function for each TOC input section |
| 9160 | and linker generated GOT section. Group input bfds such that the toc | |
| 9161 | within a group is less than 64k in size. Will break with cute linker | |
| 9162 | scripts that play games with dot in the output toc section. */ | |
| ad8e1ba5 AM |
9163 | |
| 9164 | void | |
| 4ce794b7 | 9165 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
9166 | { |
| 9167 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9168 | ||
| 4c52953f AM |
9169 | if (!htab->no_multi_toc) |
| 9170 | { | |
| 9171 | bfd_vma addr = isec->output_offset + isec->output_section->vma; | |
| 9172 | bfd_vma off = addr - htab->toc_curr; | |
| 9173 | ||
| 9174 | if (off + isec->size > 0x10000) | |
| 9175 | htab->toc_curr = addr; | |
| 99877b66 | 9176 | |
| 4c52953f AM |
9177 | elf_gp (isec->owner) = (htab->toc_curr |
| 9178 | - elf_gp (isec->output_section->owner) | |
| 9179 | + TOC_BASE_OFF); | |
| 9180 | } | |
| ad8e1ba5 AM |
9181 | } |
| 9182 | ||
| 9183 | /* Called after the last call to the above function. */ | |
| 9184 | ||
| 9185 | void | |
| 4c52953f | 9186 | ppc64_elf_reinit_toc (bfd *output_bfd, struct bfd_link_info *info) |
| ad8e1ba5 AM |
9187 | { |
| 9188 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| ad8e1ba5 | 9189 | |
| 4c52953f AM |
9190 | htab->multi_toc_needed = htab->toc_curr != elf_gp (output_bfd); |
| 9191 | ||
| ad8e1ba5 AM |
9192 | /* toc_curr tracks the TOC offset used for code sections below in |
| 9193 | ppc64_elf_next_input_section. Start off at 0x8000. */ | |
| 3d6f9012 | 9194 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
9195 | } |
| 9196 | ||
| 9b5ecbd0 AM |
9197 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 9198 | calls, then there's no need to use toc adjusting stubs when branching | |
| 9199 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
9200 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 9201 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 9202 | for a stub was detected. If called from the top level, a return of | |
| 9203 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
9204 | |
| 9205 | static int | |
| 4ce794b7 | 9206 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 9207 | { |
| 4c52953f AM |
9208 | Elf_Internal_Rela *relstart, *rel; |
| 9209 | Elf_Internal_Sym *local_syms; | |
| 9b5ecbd0 | 9210 | int ret; |
| 4c52953f | 9211 | struct ppc_link_hash_table *htab; |
| 9b5ecbd0 | 9212 | |
| 772119ce AM |
9213 | /* We know none of our code bearing sections will need toc stubs. */ |
| 9214 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 9215 | return 0; | |
| 9216 | ||
| eea6121a | 9217 | if (isec->size == 0) |
| 082c50f8 AM |
9218 | return 0; |
| 9219 | ||
| 4c52953f AM |
9220 | if (isec->output_section == NULL) |
| 9221 | return 0; | |
| 9222 | ||
| 4c52953f AM |
9223 | if (isec->reloc_count == 0) |
| 9224 | return 0; | |
| 9225 | ||
| 9226 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, | |
| 9227 | info->keep_memory); | |
| 9228 | if (relstart == NULL) | |
| 9229 | return -1; | |
| 9230 | ||
| 9231 | /* Look for branches to outside of this section. */ | |
| 9232 | local_syms = NULL; | |
| 9233 | ret = 0; | |
| 9234 | htab = ppc_hash_table (info); | |
| 9235 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) | |
| 9b5ecbd0 | 9236 | { |
| 4c52953f AM |
9237 | enum elf_ppc64_reloc_type r_type; |
| 9238 | unsigned long r_symndx; | |
| 9239 | struct elf_link_hash_entry *h; | |
| 90aecf7a | 9240 | struct ppc_link_hash_entry *eh; |
| 4c52953f AM |
9241 | Elf_Internal_Sym *sym; |
| 9242 | asection *sym_sec; | |
| 74f0fb50 | 9243 | struct _opd_sec_data *opd; |
| 4c52953f AM |
9244 | bfd_vma sym_value; |
| 9245 | bfd_vma dest; | |
| 9246 | ||
| 9247 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9248 | if (r_type != R_PPC64_REL24 | |
| 9249 | && r_type != R_PPC64_REL14 | |
| 9250 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 9251 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 9252 | continue; | |
| 9253 | ||
| 9254 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9255 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 9256 | isec->owner)) | |
| 9b5ecbd0 | 9257 | { |
| 4c52953f AM |
9258 | ret = -1; |
| 9259 | break; | |
| 9b5ecbd0 | 9260 | } |
| 9b5ecbd0 | 9261 | |
| 2917689a | 9262 | /* Calls to dynamic lib functions go through a plt call stub |
| 90aecf7a AM |
9263 | that uses r2. */ |
| 9264 | eh = (struct ppc_link_hash_entry *) h; | |
| 9265 | if (eh != NULL | |
| 9266 | && (eh->elf.plt.plist != NULL | |
| 9267 | || (eh->oh != NULL | |
| 9268 | && eh->oh->elf.plt.plist != NULL))) | |
| 2917689a | 9269 | { |
| 90aecf7a AM |
9270 | ret = 1; |
| 9271 | break; | |
| 2917689a AM |
9272 | } |
| 9273 | ||
| 90aecf7a AM |
9274 | if (sym_sec == NULL) |
| 9275 | /* Ignore other undefined symbols. */ | |
| 9276 | continue; | |
| 9277 | ||
| 2917689a AM |
9278 | /* Assume branches to other sections not included in the link need |
| 9279 | stubs too, to cover -R and absolute syms. */ | |
| 4c52953f AM |
9280 | if (sym_sec->output_section == NULL) |
| 9281 | { | |
| 9282 | ret = 1; | |
| 9283 | break; | |
| 9284 | } | |
| 9285 | ||
| 9286 | if (h == NULL) | |
| 9287 | sym_value = sym->st_value; | |
| 9288 | else | |
| 9289 | { | |
| 9290 | if (h->root.type != bfd_link_hash_defined | |
| 9291 | && h->root.type != bfd_link_hash_defweak) | |
| 9292 | abort (); | |
| 9293 | sym_value = h->root.u.def.value; | |
| 9294 | } | |
| 9295 | sym_value += rel->r_addend; | |
| 9296 | ||
| 9297 | /* If this branch reloc uses an opd sym, find the code section. */ | |
| 74f0fb50 AM |
9298 | opd = get_opd_info (sym_sec); |
| 9299 | if (opd != NULL) | |
| 4c52953f | 9300 | { |
| 74f0fb50 | 9301 | if (h == NULL && opd->adjust != NULL) |
| 4c52953f AM |
9302 | { |
| 9303 | long adjust; | |
| 9304 | ||
| 74f0fb50 | 9305 | adjust = opd->adjust[sym->st_value / 8]; |
| 4c52953f AM |
9306 | if (adjust == -1) |
| 9307 | /* Assume deleted functions won't ever be called. */ | |
| 9308 | continue; | |
| 9309 | sym_value += adjust; | |
| 9310 | } | |
| 9311 | ||
| 9312 | dest = opd_entry_value (sym_sec, sym_value, &sym_sec, NULL); | |
| 9313 | if (dest == (bfd_vma) -1) | |
| 9314 | continue; | |
| 9315 | } | |
| 9316 | else | |
| 9317 | dest = (sym_value | |
| 9318 | + sym_sec->output_offset | |
| 9319 | + sym_sec->output_section->vma); | |
| 9320 | ||
| 9321 | /* Ignore branch to self. */ | |
| 9322 | if (sym_sec == isec) | |
| 9323 | continue; | |
| 9324 | ||
| 9325 | /* If the called function uses the toc, we need a stub. */ | |
| 9326 | if (sym_sec->has_toc_reloc | |
| 9327 | || sym_sec->makes_toc_func_call) | |
| 9328 | { | |
| 9329 | ret = 1; | |
| 9330 | break; | |
| 9331 | } | |
| 9332 | ||
| 9333 | /* Assume any branch that needs a long branch stub might in fact | |
| 9334 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 9335 | else if (dest - (isec->output_offset | |
| 9336 | + isec->output_section->vma | |
| 9337 | + rel->r_offset) + (1 << 25) >= (2 << 25)) | |
| 9b5ecbd0 AM |
9338 | { |
| 9339 | ret = 1; | |
| 9340 | break; | |
| 9341 | } | |
| 4c52953f AM |
9342 | |
| 9343 | /* If calling back to a section in the process of being tested, we | |
| 9344 | can't say for sure that no toc adjusting stubs are needed, so | |
| 9345 | don't return zero. */ | |
| 9346 | else if (sym_sec->call_check_in_progress) | |
| 9347 | ret = 2; | |
| 9348 | ||
| 9349 | /* Branches to another section that itself doesn't have any TOC | |
| 9350 | references are OK. Recursively call ourselves to check. */ | |
| 9351 | else if (sym_sec->id <= htab->top_id | |
| 9352 | && htab->stub_group[sym_sec->id].toc_off == 0) | |
| 9353 | { | |
| 9354 | int recur; | |
| 9355 | ||
| 9356 | /* Mark current section as indeterminate, so that other | |
| 9357 | sections that call back to current won't be marked as | |
| 9358 | known. */ | |
| 9359 | isec->call_check_in_progress = 1; | |
| 9360 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 9361 | isec->call_check_in_progress = 0; | |
| 9362 | ||
| 9363 | if (recur < 0) | |
| 9364 | { | |
| 9365 | /* An error. Exit. */ | |
| 9366 | ret = -1; | |
| 9367 | break; | |
| 9368 | } | |
| 9369 | else if (recur <= 1) | |
| 9370 | { | |
| 9371 | /* Known result. Mark as checked and set section flag. */ | |
| 9372 | htab->stub_group[sym_sec->id].toc_off = 1; | |
| 9373 | if (recur != 0) | |
| 9374 | { | |
| 9375 | sym_sec->makes_toc_func_call = 1; | |
| 9376 | ret = 1; | |
| 9377 | break; | |
| 9378 | } | |
| 9379 | } | |
| 9380 | else | |
| 9381 | { | |
| 9382 | /* Unknown result. Continue checking. */ | |
| 9383 | ret = 2; | |
| 9384 | } | |
| 9385 | } | |
| 9b5ecbd0 AM |
9386 | } |
| 9387 | ||
| 4c52953f | 9388 | if (local_syms != NULL |
| 0ffa91dd | 9389 | && (elf_symtab_hdr (isec->owner).contents != (unsigned char *) local_syms)) |
| 4c52953f AM |
9390 | free (local_syms); |
| 9391 | if (elf_section_data (isec)->relocs != relstart) | |
| 9392 | free (relstart); | |
| 9393 | ||
| 9b5ecbd0 AM |
9394 | return ret; |
| 9395 | } | |
| 9396 | ||
| 721956f4 AM |
9397 | /* The linker repeatedly calls this function for each input section, |
| 9398 | in the order that input sections are linked into output sections. | |
| 9399 | Build lists of input sections to determine groupings between which | |
| 9400 | we may insert linker stubs. */ | |
| 9401 | ||
| 9b5ecbd0 | 9402 | bfd_boolean |
| 4ce794b7 | 9403 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
9404 | { |
| 9405 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9406 | ||
| 734b6cf9 AM |
9407 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 9408 | && isec->output_section->index <= htab->top_index) | |
| 721956f4 | 9409 | { |
| 734b6cf9 | 9410 | asection **list = htab->input_list + isec->output_section->index; |
| 3d6f9012 | 9411 | /* Steal the link_sec pointer for our list. */ |
| 721956f4 | 9412 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) |
| 3d6f9012 AM |
9413 | /* This happens to make the list in reverse order, |
| 9414 | which is what we want. */ | |
| 734b6cf9 AM |
9415 | PREV_SEC (isec) = *list; |
| 9416 | *list = isec; | |
| 721956f4 | 9417 | } |
| ad8e1ba5 | 9418 | |
| 4c52953f | 9419 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 9420 | { |
| 4c52953f AM |
9421 | /* If a code section has a function that uses the TOC then we need |
| 9422 | to use the right TOC (obviously). Also, make sure that .opd gets | |
| 9423 | the correct TOC value for R_PPC64_TOC relocs that don't have or | |
| f94498ff AM |
9424 | can't find their function symbol (shouldn't ever happen now). |
| 9425 | Also specially treat .fixup for the linux kernel. .fixup | |
| 9426 | contains branches, but only back to the function that hit an | |
| 9427 | exception. */ | |
| 9428 | if (isec->has_toc_reloc | |
| 9429 | || (isec->flags & SEC_CODE) == 0 | |
| 9430 | || strcmp (isec->name, ".fixup") == 0) | |
| 4c52953f AM |
9431 | { |
| 9432 | if (elf_gp (isec->owner) != 0) | |
| 9433 | htab->toc_curr = elf_gp (isec->owner); | |
| 9434 | } | |
| 9435 | else if (htab->stub_group[isec->id].toc_off == 0) | |
| 9436 | { | |
| 9437 | int ret = toc_adjusting_stub_needed (info, isec); | |
| 9438 | if (ret < 0) | |
| 9439 | return FALSE; | |
| 9440 | else | |
| 9441 | isec->makes_toc_func_call = ret & 1; | |
| 9442 | } | |
| 9b5ecbd0 | 9443 | } |
| ad8e1ba5 AM |
9444 | |
| 9445 | /* Functions that don't use the TOC can belong in any TOC group. | |
| 9446 | Use the last TOC base. This happens to make _init and _fini | |
| 9447 | pasting work. */ | |
| 9448 | htab->stub_group[isec->id].toc_off = htab->toc_curr; | |
| 9b5ecbd0 | 9449 | return TRUE; |
| 721956f4 AM |
9450 | } |
| 9451 | ||
| 9452 | /* See whether we can group stub sections together. Grouping stub | |
| 9453 | sections may result in fewer stubs. More importantly, we need to | |
| 9454 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 9455 | .fini output sections respectively, because glibc splits the | |
| 9456 | _init and _fini functions into multiple parts. Putting a stub in | |
| 9457 | the middle of a function is not a good idea. */ | |
| 9458 | ||
| 9459 | static void | |
| 4ce794b7 AM |
9460 | group_sections (struct ppc_link_hash_table *htab, |
| 9461 | bfd_size_type stub_group_size, | |
| 9462 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 9463 | { |
| 7c8fe5c4 AM |
9464 | asection **list; |
| 9465 | bfd_size_type stub14_group_size; | |
| 9466 | bfd_boolean suppress_size_errors; | |
| 9467 | ||
| 9468 | suppress_size_errors = FALSE; | |
| 9469 | stub14_group_size = stub_group_size; | |
| 9470 | if (stub_group_size == 1) | |
| 9471 | { | |
| 9472 | /* Default values. */ | |
| 9473 | if (stubs_always_before_branch) | |
| 9474 | { | |
| 9475 | stub_group_size = 0x1e00000; | |
| 9476 | stub14_group_size = 0x7800; | |
| 9477 | } | |
| 9478 | else | |
| 9479 | { | |
| 9480 | stub_group_size = 0x1c00000; | |
| 9481 | stub14_group_size = 0x7000; | |
| 9482 | } | |
| 9483 | suppress_size_errors = TRUE; | |
| 9484 | } | |
| 9485 | ||
| 9486 | list = htab->input_list + htab->top_index; | |
| 734b6cf9 | 9487 | do |
| 721956f4 | 9488 | { |
| 734b6cf9 AM |
9489 | asection *tail = *list; |
| 9490 | while (tail != NULL) | |
| 721956f4 | 9491 | { |
| 734b6cf9 AM |
9492 | asection *curr; |
| 9493 | asection *prev; | |
| 9494 | bfd_size_type total; | |
| 9495 | bfd_boolean big_sec; | |
| 9496 | bfd_vma curr_toc; | |
| 9497 | ||
| 9498 | curr = tail; | |
| eea6121a | 9499 | total = tail->size; |
| 7c8fe5c4 AM |
9500 | big_sec = total > (ppc64_elf_section_data (tail)->has_14bit_branch |
| 9501 | ? stub14_group_size : stub_group_size); | |
| 9502 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
9503 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 9504 | tail->owner, tail); | |
| 734b6cf9 AM |
9505 | curr_toc = htab->stub_group[tail->id].toc_off; |
| 9506 | ||
| 9507 | while ((prev = PREV_SEC (curr)) != NULL | |
| 9508 | && ((total += curr->output_offset - prev->output_offset) | |
| 7c8fe5c4 AM |
9509 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
| 9510 | ? stub14_group_size : stub_group_size)) | |
| ad8e1ba5 | 9511 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
9512 | curr = prev; |
| 9513 | ||
| 9514 | /* OK, the size from the start of CURR to the end is less | |
| 9515 | than stub_group_size and thus can be handled by one stub | |
| 9516 | section. (or the tail section is itself larger than | |
| 9517 | stub_group_size, in which case we may be toast.) We | |
| 9518 | should really be keeping track of the total size of stubs | |
| 9519 | added here, as stubs contribute to the final output | |
| 9520 | section size. That's a little tricky, and this way will | |
| 9521 | only break if stubs added make the total size more than | |
| 9522 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 9523 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 9524 | do | |
| 721956f4 AM |
9525 | { |
| 9526 | prev = PREV_SEC (tail); | |
| 734b6cf9 | 9527 | /* Set up this stub group. */ |
| 721956f4 AM |
9528 | htab->stub_group[tail->id].link_sec = curr; |
| 9529 | } | |
| 734b6cf9 AM |
9530 | while (tail != curr && (tail = prev) != NULL); |
| 9531 | ||
| 9532 | /* But wait, there's more! Input sections up to stub_group_size | |
| 9533 | bytes before the stub section can be handled by it too. | |
| 9534 | Don't do this if we have a really large section after the | |
| 9535 | stubs, as adding more stubs increases the chance that | |
| 9536 | branches may not reach into the stub section. */ | |
| 9537 | if (!stubs_always_before_branch && !big_sec) | |
| 9538 | { | |
| 9539 | total = 0; | |
| 9540 | while (prev != NULL | |
| 9541 | && ((total += tail->output_offset - prev->output_offset) | |
| 7c8fe5c4 AM |
9542 | < (ppc64_elf_section_data (prev)->has_14bit_branch |
| 9543 | ? stub14_group_size : stub_group_size)) | |
| 734b6cf9 AM |
9544 | && htab->stub_group[prev->id].toc_off == curr_toc) |
| 9545 | { | |
| 9546 | tail = prev; | |
| 9547 | prev = PREV_SEC (tail); | |
| 9548 | htab->stub_group[tail->id].link_sec = curr; | |
| 9549 | } | |
| 9550 | } | |
| 9551 | tail = prev; | |
| 721956f4 AM |
9552 | } |
| 9553 | } | |
| 734b6cf9 AM |
9554 | while (list-- != htab->input_list); |
| 9555 | free (htab->input_list); | |
| 721956f4 AM |
9556 | #undef PREV_SEC |
| 9557 | } | |
| 9558 | ||
| 721956f4 AM |
9559 | /* Determine and set the size of the stub section for a final link. |
| 9560 | ||
| 9561 | The basic idea here is to examine all the relocations looking for | |
| 9562 | PC-relative calls to a target that is unreachable with a "bl" | |
| 9563 | instruction. */ | |
| 9564 | ||
| b34976b6 | 9565 | bfd_boolean |
| 4ce794b7 | 9566 | ppc64_elf_size_stubs (bfd *output_bfd, |
| 4ce794b7 AM |
9567 | struct bfd_link_info *info, |
| 9568 | bfd_signed_vma group_size, | |
| 9569 | asection *(*add_stub_section) (const char *, asection *), | |
| 9570 | void (*layout_sections_again) (void)) | |
| 721956f4 AM |
9571 | { |
| 9572 | bfd_size_type stub_group_size; | |
| b34976b6 | 9573 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
9574 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 9575 | ||
| 9576 | /* Stash our params away. */ | |
| 721956f4 AM |
9577 | htab->add_stub_section = add_stub_section; |
| 9578 | htab->layout_sections_again = layout_sections_again; | |
| 9579 | stubs_always_before_branch = group_size < 0; | |
| 9580 | if (group_size < 0) | |
| 9581 | stub_group_size = -group_size; | |
| 9582 | else | |
| 9583 | stub_group_size = group_size; | |
| 721956f4 AM |
9584 | |
| 9585 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
| 9586 | ||
| 721956f4 AM |
9587 | while (1) |
| 9588 | { | |
| 9589 | bfd *input_bfd; | |
| 9590 | unsigned int bfd_indx; | |
| 9591 | asection *stub_sec; | |
| 721956f4 AM |
9592 | |
| 9593 | htab->stub_iteration += 1; | |
| 721956f4 AM |
9594 | |
| 9595 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 9596 | input_bfd != NULL; | |
| 9597 | input_bfd = input_bfd->link_next, bfd_indx++) | |
| 9598 | { | |
| 9599 | Elf_Internal_Shdr *symtab_hdr; | |
| 9600 | asection *section; | |
| 6cdc0ccc | 9601 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 9602 | |
| 0c8d6e5c | 9603 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
9604 | continue; |
| 9605 | ||
| 721956f4 | 9606 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 9607 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
9608 | if (symtab_hdr->sh_info == 0) |
| 9609 | continue; | |
| 9610 | ||
| 721956f4 AM |
9611 | /* Walk over each section attached to the input bfd. */ |
| 9612 | for (section = input_bfd->sections; | |
| 9613 | section != NULL; | |
| 9614 | section = section->next) | |
| 9615 | { | |
| 721956f4 | 9616 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
9617 | |
| 9618 | /* If there aren't any relocs, then there's nothing more | |
| 9619 | to do. */ | |
| 9620 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
9621 | || (section->flags & SEC_ALLOC) == 0 |
| 9622 | || (section->flags & SEC_LOAD) == 0 | |
| 9623 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
9624 | || section->reloc_count == 0) |
| 9625 | continue; | |
| 9626 | ||
| 9627 | /* If this section is a link-once section that will be | |
| 9628 | discarded, then don't create any stubs. */ | |
| 9629 | if (section->output_section == NULL | |
| 9630 | || section->output_section->owner != output_bfd) | |
| 9631 | continue; | |
| 9632 | ||
| 1e2f5b6e AM |
9633 | /* Get the relocs. */ |
| 9634 | internal_relocs | |
| 4ce794b7 | 9635 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 9636 | info->keep_memory); |
| 721956f4 | 9637 | if (internal_relocs == NULL) |
| 1e2f5b6e | 9638 | goto error_ret_free_local; |
| 721956f4 AM |
9639 | |
| 9640 | /* Now examine each relocation. */ | |
| 9641 | irela = internal_relocs; | |
| 9642 | irelaend = irela + section->reloc_count; | |
| 9643 | for (; irela < irelaend; irela++) | |
| 9644 | { | |
| 4ce794b7 AM |
9645 | enum elf_ppc64_reloc_type r_type; |
| 9646 | unsigned int r_indx; | |
| 721956f4 AM |
9647 | enum ppc_stub_type stub_type; |
| 9648 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 9649 | asection *sym_sec, *code_sec; |
| 721956f4 AM |
9650 | bfd_vma sym_value; |
| 9651 | bfd_vma destination; | |
| 8843416a | 9652 | bfd_boolean ok_dest; |
| 721956f4 | 9653 | struct ppc_link_hash_entry *hash; |
| 8387904d | 9654 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
9655 | struct elf_link_hash_entry *h; |
| 9656 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
9657 | char *stub_name; |
| 9658 | const asection *id_sec; | |
| 74f0fb50 | 9659 | struct _opd_sec_data *opd; |
| 721956f4 AM |
9660 | |
| 9661 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 9662 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 9663 | ||
| 4ce794b7 | 9664 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
9665 | { |
| 9666 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 9667 | goto error_ret_free_internal; |
| 721956f4 AM |
9668 | } |
| 9669 | ||
| 9670 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
9671 | if (r_type != R_PPC64_REL24 |
| 9672 | && r_type != R_PPC64_REL14 | |
| 9673 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 9674 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
9675 | continue; |
| 9676 | ||
| 9677 | /* Now determine the call target, its name, value, | |
| 9678 | section. */ | |
| 411e1bfb AM |
9679 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 9680 | r_indx, input_bfd)) | |
| 9681 | goto error_ret_free_internal; | |
| 9682 | hash = (struct ppc_link_hash_entry *) h; | |
| 9683 | ||
| 8843416a | 9684 | ok_dest = FALSE; |
| 8387904d | 9685 | fdh = NULL; |
| 7fe2b9a6 | 9686 | sym_value = 0; |
| 411e1bfb | 9687 | if (hash == NULL) |
| 721956f4 | 9688 | { |
| 411e1bfb | 9689 | sym_value = sym->st_value; |
| 8843416a | 9690 | ok_dest = TRUE; |
| 721956f4 | 9691 | } |
| 7fe2b9a6 AM |
9692 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 9693 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 9694 | { | |
| 9695 | sym_value = hash->elf.root.u.def.value; | |
| 9696 | if (sym_sec->output_section != NULL) | |
| 9697 | ok_dest = TRUE; | |
| 9698 | } | |
| 9699 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 9700 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 9701 | { |
| 99877b66 | 9702 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
9703 | use the func descriptor sym instead if it is |
| 9704 | defined. */ | |
| ceb1f1ef | 9705 | if (hash->elf.root.root.string[0] == '.' |
| 8387904d AM |
9706 | && (fdh = get_fdh (hash, htab)) != NULL) |
| 9707 | { | |
| 8387904d AM |
9708 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 9709 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 9710 | { | |
| 9711 | sym_sec = fdh->elf.root.u.def.section; | |
| 9712 | sym_value = fdh->elf.root.u.def.value; | |
| 9713 | if (sym_sec->output_section != NULL) | |
| 9714 | ok_dest = TRUE; | |
| 9715 | } | |
| 99877b66 AM |
9716 | else |
| 9717 | fdh = NULL; | |
| 8387904d | 9718 | } |
| 7fe2b9a6 AM |
9719 | } |
| 9720 | else | |
| 9721 | { | |
| 9722 | bfd_set_error (bfd_error_bad_value); | |
| 9723 | goto error_ret_free_internal; | |
| 721956f4 AM |
9724 | } |
| 9725 | ||
| 8843416a AM |
9726 | destination = 0; |
| 9727 | if (ok_dest) | |
| 9728 | { | |
| 9729 | sym_value += irela->r_addend; | |
| 9730 | destination = (sym_value | |
| 9731 | + sym_sec->output_offset | |
| 9732 | + sym_sec->output_section->vma); | |
| 9733 | } | |
| 9734 | ||
| 8387904d | 9735 | code_sec = sym_sec; |
| 74f0fb50 AM |
9736 | opd = get_opd_info (sym_sec); |
| 9737 | if (opd != NULL) | |
| 8387904d AM |
9738 | { |
| 9739 | bfd_vma dest; | |
| 9740 | ||
| 74f0fb50 | 9741 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 9742 | { |
| 74f0fb50 | 9743 | long adjust = opd->adjust[sym_value / 8]; |
| 8387904d AM |
9744 | if (adjust == -1) |
| 9745 | continue; | |
| 9746 | sym_value += adjust; | |
| 9747 | } | |
| 9748 | dest = opd_entry_value (sym_sec, sym_value, | |
| 9749 | &code_sec, &sym_value); | |
| 9750 | if (dest != (bfd_vma) -1) | |
| 9751 | { | |
| 9752 | destination = dest; | |
| 9753 | if (fdh != NULL) | |
| 9754 | { | |
| 9755 | /* Fixup old ABI sym to point at code | |
| 9756 | entry. */ | |
| 99877b66 | 9757 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d AM |
9758 | hash->elf.root.u.def.section = code_sec; |
| 9759 | hash->elf.root.u.def.value = sym_value; | |
| 9760 | } | |
| 9761 | } | |
| 9762 | } | |
| 9763 | ||
| 721956f4 AM |
9764 | /* Determine what (if any) linker stub is needed. */ |
| 9765 | stub_type = ppc_type_of_stub (section, irela, &hash, | |
| 9766 | destination); | |
| ad8e1ba5 AM |
9767 | |
| 9768 | if (stub_type != ppc_stub_plt_call) | |
| 9769 | { | |
| 9770 | /* Check whether we need a TOC adjusting stub. | |
| 9771 | Since the linker pastes together pieces from | |
| 9772 | different object files when creating the | |
| 9773 | _init and _fini functions, it may be that a | |
| 9774 | call to what looks like a local sym is in | |
| 9775 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
9776 | if (code_sec != NULL |
| 9777 | && code_sec->output_section != NULL | |
| 9778 | && (htab->stub_group[code_sec->id].toc_off | |
| 9b5ecbd0 | 9779 | != htab->stub_group[section->id].toc_off) |
| 4c52953f AM |
9780 | && (code_sec->has_toc_reloc |
| 9781 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
9782 | stub_type = ppc_stub_long_branch_r2off; |
| 9783 | } | |
| 9784 | ||
| 721956f4 AM |
9785 | if (stub_type == ppc_stub_none) |
| 9786 | continue; | |
| 9787 | ||
| 411e1bfb AM |
9788 | /* __tls_get_addr calls might be eliminated. */ |
| 9789 | if (stub_type != ppc_stub_plt_call | |
| 9790 | && hash != NULL | |
| 8387904d AM |
9791 | && (hash == htab->tls_get_addr |
| 9792 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
9793 | && section->has_tls_reloc |
| 9794 | && irela != internal_relocs) | |
| 9795 | { | |
| 9796 | /* Get tls info. */ | |
| e7b938ca | 9797 | char *tls_mask; |
| 411e1bfb | 9798 | |
| 3a71aa26 | 9799 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
9800 | irela - 1, input_bfd)) |
| 9801 | goto error_ret_free_internal; | |
| e7b938ca | 9802 | if (*tls_mask != 0) |
| 411e1bfb AM |
9803 | continue; |
| 9804 | } | |
| 9805 | ||
| 721956f4 AM |
9806 | /* Support for grouping stub sections. */ |
| 9807 | id_sec = htab->stub_group[section->id].link_sec; | |
| 9808 | ||
| 9809 | /* Get the name of this stub. */ | |
| 9810 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 9811 | if (!stub_name) | |
| 9812 | goto error_ret_free_internal; | |
| 9813 | ||
| 9814 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 9815 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
9816 | if (stub_entry != NULL) |
| 9817 | { | |
| 9818 | /* The proper stub has already been created. */ | |
| 9819 | free (stub_name); | |
| 9820 | continue; | |
| 9821 | } | |
| 9822 | ||
| 9823 | stub_entry = ppc_add_stub (stub_name, section, htab); | |
| 9824 | if (stub_entry == NULL) | |
| 9825 | { | |
| 9826 | free (stub_name); | |
| 6cdc0ccc AM |
9827 | error_ret_free_internal: |
| 9828 | if (elf_section_data (section)->relocs == NULL) | |
| 9829 | free (internal_relocs); | |
| 9830 | error_ret_free_local: | |
| 9831 | if (local_syms != NULL | |
| 9832 | && (symtab_hdr->contents | |
| 9833 | != (unsigned char *) local_syms)) | |
| 9834 | free (local_syms); | |
| b34976b6 | 9835 | return FALSE; |
| 721956f4 AM |
9836 | } |
| 9837 | ||
| ad8e1ba5 | 9838 | stub_entry->stub_type = stub_type; |
| 721956f4 | 9839 | stub_entry->target_value = sym_value; |
| 8387904d | 9840 | stub_entry->target_section = code_sec; |
| 721956f4 | 9841 | stub_entry->h = hash; |
| 411e1bfb | 9842 | stub_entry->addend = irela->r_addend; |
| ee75fd95 AM |
9843 | |
| 9844 | if (stub_entry->h != NULL) | |
| 9845 | htab->stub_globals += 1; | |
| 721956f4 AM |
9846 | } |
| 9847 | ||
| 9848 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 9849 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 9850 | free (internal_relocs); |
| 721956f4 | 9851 | } |
| 6cdc0ccc AM |
9852 | |
| 9853 | if (local_syms != NULL | |
| 9854 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9855 | { | |
| 9856 | if (!info->keep_memory) | |
| 9857 | free (local_syms); | |
| 9858 | else | |
| 9859 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9860 | } | |
| 721956f4 AM |
9861 | } |
| 9862 | ||
| 5c3dead3 | 9863 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 AM |
9864 | stub sections. */ |
| 9865 | for (stub_sec = htab->stub_bfd->sections; | |
| 9866 | stub_sec != NULL; | |
| 9867 | stub_sec = stub_sec->next) | |
| e717da7e | 9868 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 9869 | { |
| 5c3dead3 | 9870 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
9871 | stub_sec->size = 0; |
| 9872 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 9873 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 9874 | } |
| eea6121a AM |
9875 | |
| 9876 | htab->brlt->size = 0; | |
| 84f5d08e AM |
9877 | htab->brlt->reloc_count = 0; |
| 9878 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 9879 | if (htab->relbrlt != NULL) |
| eea6121a | 9880 | htab->relbrlt->size = 0; |
| 721956f4 | 9881 | |
| 63bc6f6c | 9882 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 9883 | |
| 176a0d42 AM |
9884 | if (info->emitrelocations |
| 9885 | && htab->glink != NULL && htab->glink->size != 0) | |
| 9886 | { | |
| 9887 | htab->glink->reloc_count = 1; | |
| 9888 | htab->glink->flags |= SEC_RELOC; | |
| 9889 | } | |
| 9890 | ||
| 5c3dead3 AM |
9891 | for (stub_sec = htab->stub_bfd->sections; |
| 9892 | stub_sec != NULL; | |
| 9893 | stub_sec = stub_sec->next) | |
| 9894 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 9895 | && stub_sec->rawsize != stub_sec->size) | |
| 9896 | break; | |
| 9897 | ||
| 9898 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 9899 | have changed size. */ | |
| 9900 | if (stub_sec == NULL) | |
| 9901 | break; | |
| 9902 | ||
| 721956f4 AM |
9903 | /* Ask the linker to do its stuff. */ |
| 9904 | (*htab->layout_sections_again) (); | |
| 9905 | } | |
| 9906 | ||
| c456f082 | 9907 | /* It would be nice to strip htab->brlt from the output if the |
| afbe61cf AM |
9908 | section is empty, but it's too late. If we strip sections here, |
| 9909 | the dynamic symbol table is corrupted since the section symbol | |
| 9910 | for the stripped section isn't written. */ | |
| 721956f4 | 9911 | |
| b34976b6 | 9912 | return TRUE; |
| 721956f4 AM |
9913 | } |
| 9914 | ||
| 9915 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 9916 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 9917 | |
| 805fc799 | 9918 | bfd_vma |
| 4ce794b7 | 9919 | ppc64_elf_toc (bfd *obfd) |
| 721956f4 | 9920 | { |
| 805fc799 AM |
9921 | asection *s; |
| 9922 | bfd_vma TOCstart; | |
| 721956f4 | 9923 | |
| 805fc799 AM |
9924 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 9925 | order. The TOC starts where the first of these sections starts. */ | |
| 9926 | s = bfd_get_section_by_name (obfd, ".got"); | |
| 9927 | if (s == NULL) | |
| 9928 | s = bfd_get_section_by_name (obfd, ".toc"); | |
| 9929 | if (s == NULL) | |
| 9930 | s = bfd_get_section_by_name (obfd, ".tocbss"); | |
| 9931 | if (s == NULL) | |
| 9932 | s = bfd_get_section_by_name (obfd, ".plt"); | |
| 9933 | if (s == NULL) | |
| 9934 | { | |
| 9935 | /* This may happen for | |
| 9936 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 9937 | .toc directive | |
| 9938 | o bad linker script | |
| 9939 | o --gc-sections and empty TOC sections | |
| 9940 | ||
| 9941 | FIXME: Warn user? */ | |
| 9942 | ||
| 9943 | /* Look for a likely section. We probably won't even be | |
| 9944 | using TOCstart. */ | |
| 9945 | for (s = obfd->sections; s != NULL; s = s->next) | |
| 9946 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY)) | |
| 9947 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
| 9948 | break; | |
| 721956f4 | 9949 | if (s == NULL) |
| 805fc799 AM |
9950 | for (s = obfd->sections; s != NULL; s = s->next) |
| 9951 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA)) | |
| 9952 | == (SEC_ALLOC | SEC_SMALL_DATA)) | |
| 9953 | break; | |
| 721956f4 | 9954 | if (s == NULL) |
| 805fc799 AM |
9955 | for (s = obfd->sections; s != NULL; s = s->next) |
| 9956 | if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC) | |
| 9957 | break; | |
| 721956f4 | 9958 | if (s == NULL) |
| 805fc799 AM |
9959 | for (s = obfd->sections; s != NULL; s = s->next) |
| 9960 | if ((s->flags & SEC_ALLOC) == SEC_ALLOC) | |
| 9961 | break; | |
| 9962 | } | |
| 721956f4 | 9963 | |
| 805fc799 AM |
9964 | TOCstart = 0; |
| 9965 | if (s != NULL) | |
| 9966 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 9967 | |
| 805fc799 | 9968 | return TOCstart; |
| 721956f4 AM |
9969 | } |
| 9970 | ||
| 9971 | /* Build all the stubs associated with the current output file. | |
| 9972 | The stubs are kept in a hash table attached to the main linker | |
| 9973 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 9974 | ||
| b34976b6 | 9975 | bfd_boolean |
| 4ce794b7 AM |
9976 | ppc64_elf_build_stubs (bfd_boolean emit_stub_syms, |
| 9977 | struct bfd_link_info *info, | |
| 9978 | char **stats) | |
| 5d1634d7 AM |
9979 | { |
| 9980 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 721956f4 | 9981 | asection *stub_sec; |
| 5d1634d7 | 9982 | bfd_byte *p; |
| e717da7e | 9983 | int stub_sec_count = 0; |
| 5d1634d7 | 9984 | |
| ad8e1ba5 | 9985 | htab->emit_stub_syms = emit_stub_syms; |
| eea6121a AM |
9986 | |
| 9987 | /* Allocate memory to hold the linker stubs. */ | |
| 721956f4 AM |
9988 | for (stub_sec = htab->stub_bfd->sections; |
| 9989 | stub_sec != NULL; | |
| 9990 | stub_sec = stub_sec->next) | |
| eea6121a AM |
9991 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 9992 | && stub_sec->size != 0) | |
| e717da7e | 9993 | { |
| eea6121a AM |
9994 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, stub_sec->size); |
| 9995 | if (stub_sec->contents == NULL) | |
| 9996 | return FALSE; | |
| 9997 | /* We want to check that built size is the same as calculated | |
| 9998 | size. rawsize is a convenient location to use. */ | |
| 9999 | stub_sec->rawsize = stub_sec->size; | |
| 10000 | stub_sec->size = 0; | |
| e717da7e | 10001 | } |
| 5d1634d7 | 10002 | |
| 23eb7e01 | 10003 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 10004 | { |
| 9f951329 | 10005 | unsigned int indx; |
| ad8e1ba5 | 10006 | bfd_vma plt0; |
| 9f951329 | 10007 | |
| 721956f4 | 10008 | /* Build the .glink plt call stub. */ |
| 97b639ba AM |
10009 | if (htab->emit_stub_syms) |
| 10010 | { | |
| 10011 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
10012 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 10013 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
10014 | if (h == NULL) |
| 10015 | return FALSE; | |
| 10016 | if (h->root.type == bfd_link_hash_new) | |
| 10017 | { | |
| 10018 | h->root.type = bfd_link_hash_defined; | |
| 10019 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 10020 | h->root.u.def.value = 8; |
| f5385ebf AM |
10021 | h->ref_regular = 1; |
| 10022 | h->def_regular = 1; | |
| 10023 | h->ref_regular_nonweak = 1; | |
| 10024 | h->forced_local = 1; | |
| 10025 | h->non_elf = 0; | |
| 97b639ba AM |
10026 | } |
| 10027 | } | |
| 176a0d42 AM |
10028 | plt0 = htab->plt->output_section->vma + htab->plt->output_offset - 16; |
| 10029 | if (info->emitrelocations) | |
| 10030 | { | |
| 10031 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 10032 | if (r == NULL) | |
| 10033 | return FALSE; | |
| 10034 | r->r_offset = (htab->glink->output_offset | |
| 10035 | + htab->glink->output_section->vma); | |
| 10036 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 10037 | r->r_addend = plt0; | |
| 10038 | } | |
| 4ce794b7 | 10039 | p = htab->glink->contents; |
| 176a0d42 | 10040 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
10041 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 10042 | p += 8; | |
| 10043 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| ad8e1ba5 | 10044 | p += 4; |
| ee4bf8d2 | 10045 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); |
| ad8e1ba5 | 10046 | p += 4; |
| ee4bf8d2 | 10047 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); |
| ad8e1ba5 | 10048 | p += 4; |
| ee4bf8d2 | 10049 | bfd_put_32 (htab->glink->owner, LD_R2_M16R11, p); |
| ad8e1ba5 | 10050 | p += 4; |
| ee4bf8d2 | 10051 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); |
| ad8e1ba5 | 10052 | p += 4; |
| ee4bf8d2 | 10053 | bfd_put_32 (htab->glink->owner, ADD_R12_R2_R11, p); |
| ad8e1ba5 | 10054 | p += 4; |
| ee4bf8d2 | 10055 | bfd_put_32 (htab->glink->owner, LD_R11_0R12, p); |
| ad8e1ba5 | 10056 | p += 4; |
| 4ce794b7 | 10057 | bfd_put_32 (htab->glink->owner, LD_R2_0R12 | 8, p); |
| ad8e1ba5 | 10058 | p += 4; |
| 4ce794b7 | 10059 | bfd_put_32 (htab->glink->owner, MTCTR_R11, p); |
| ad8e1ba5 | 10060 | p += 4; |
| 4ce794b7 | 10061 | bfd_put_32 (htab->glink->owner, LD_R11_0R12 | 16, p); |
| ad8e1ba5 | 10062 | p += 4; |
| 4ce794b7 | 10063 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 10064 | p += 4; |
| ee4bf8d2 AM |
10065 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 10066 | { | |
| 10067 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 10068 | p += 4; | |
| 10069 | } | |
| ad8e1ba5 | 10070 | |
| 9f951329 AM |
10071 | /* Build the .glink lazy link call stubs. */ |
| 10072 | indx = 0; | |
| eea6121a | 10073 | while (p < htab->glink->contents + htab->glink->size) |
| 9f951329 AM |
10074 | { |
| 10075 | if (indx < 0x8000) | |
| 10076 | { | |
| 4ce794b7 | 10077 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); |
| 9f951329 AM |
10078 | p += 4; |
| 10079 | } | |
| 10080 | else | |
| 10081 | { | |
| 4ce794b7 | 10082 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); |
| 9f951329 | 10083 | p += 4; |
| 4ce794b7 | 10084 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), p); |
| 9f951329 AM |
10085 | p += 4; |
| 10086 | } | |
| 4ce794b7 | 10087 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 10088 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 10089 | indx++; |
| 9f951329 AM |
10090 | p += 4; |
| 10091 | } | |
| eea6121a | 10092 | htab->glink->rawsize = p - htab->glink->contents; |
| 5d1634d7 | 10093 | } |
| 5d1634d7 | 10094 | |
| eea6121a | 10095 | if (htab->brlt->size != 0) |
| 721956f4 | 10096 | { |
| 4ce794b7 | 10097 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 10098 | htab->brlt->size); |
| 4ce794b7 | 10099 | if (htab->brlt->contents == NULL) |
| b34976b6 | 10100 | return FALSE; |
| 721956f4 | 10101 | } |
| ee75fd95 | 10102 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
10103 | { |
| 10104 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 10105 | htab->relbrlt->size); |
| 63bc6f6c AM |
10106 | if (htab->relbrlt->contents == NULL) |
| 10107 | return FALSE; | |
| 10108 | } | |
| 5d1634d7 | 10109 | |
| 721956f4 AM |
10110 | /* Build the stubs as directed by the stub hash table. */ |
| 10111 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 10112 | |
| aa8a7074 AM |
10113 | if (htab->relbrlt != NULL) |
| 10114 | htab->relbrlt->reloc_count = 0; | |
| 10115 | ||
| 721956f4 AM |
10116 | for (stub_sec = htab->stub_bfd->sections; |
| 10117 | stub_sec != NULL; | |
| 10118 | stub_sec = stub_sec->next) | |
| e717da7e AM |
10119 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 10120 | { | |
| 10121 | stub_sec_count += 1; | |
| eea6121a | 10122 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
10123 | break; |
| 10124 | } | |
| 5d1634d7 | 10125 | |
| 721956f4 | 10126 | if (stub_sec != NULL |
| eea6121a | 10127 | || htab->glink->rawsize != htab->glink->size) |
| 5d1634d7 | 10128 | { |
| b34976b6 | 10129 | htab->stub_error = TRUE; |
| 721956f4 | 10130 | (*_bfd_error_handler) (_("stubs don't match calculated size")); |
| 5d1634d7 | 10131 | } |
| 721956f4 | 10132 | |
| d2a300cf AM |
10133 | if (htab->stub_error) |
| 10134 | return FALSE; | |
| 10135 | ||
| 10136 | if (stats != NULL) | |
| 10137 | { | |
| 10138 | *stats = bfd_malloc (500); | |
| 10139 | if (*stats == NULL) | |
| 10140 | return FALSE; | |
| 10141 | ||
| ee75fd95 | 10142 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
10143 | " branch %lu\n" |
| 10144 | " toc adjust %lu\n" | |
| 10145 | " long branch %lu\n" | |
| 10146 | " long toc adj %lu\n" | |
| 10147 | " plt call %lu"), | |
| e717da7e | 10148 | stub_sec_count, |
| ee75fd95 | 10149 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
10150 | htab->stub_count[ppc_stub_long_branch - 1], |
| 10151 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 10152 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 10153 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 10154 | htab->stub_count[ppc_stub_plt_call - 1]); | |
| d2a300cf AM |
10155 | } |
| 10156 | return TRUE; | |
| 5bd4f169 AM |
10157 | } |
| 10158 | ||
| 99877b66 AM |
10159 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 10160 | ||
| 10161 | static bfd_boolean | |
| 10162 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 10163 | { | |
| 10164 | struct ppc_link_hash_entry *eh; | |
| 10165 | ||
| 10166 | if (h->root.type == bfd_link_hash_indirect) | |
| 10167 | return TRUE; | |
| 10168 | ||
| 10169 | if (h->root.type == bfd_link_hash_warning) | |
| 10170 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
| 10171 | ||
| 10172 | eh = (struct ppc_link_hash_entry *) h; | |
| 10173 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 10174 | return TRUE; | |
| 10175 | ||
| 10176 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 10177 | return TRUE; | |
| 10178 | } | |
| 10179 | ||
| 10180 | void | |
| 10181 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 10182 | { | |
| 10183 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 10184 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 10185 | } | |
| 10186 | ||
| 60124e18 AM |
10187 | /* What to do when ld finds relocations against symbols defined in |
| 10188 | discarded sections. */ | |
| 10189 | ||
| 10190 | static unsigned int | |
| 10191 | ppc64_elf_action_discarded (asection *sec) | |
| 10192 | { | |
| 10193 | if (strcmp (".opd", sec->name) == 0) | |
| 10194 | return 0; | |
| 10195 | ||
| 10196 | if (strcmp (".toc", sec->name) == 0) | |
| 10197 | return 0; | |
| 10198 | ||
| bce50a28 JJ |
10199 | if (strcmp (".toc1", sec->name) == 0) |
| 10200 | return 0; | |
| 10201 | ||
| 60124e18 AM |
10202 | return _bfd_elf_default_action_discarded (sec); |
| 10203 | } | |
| 10204 | ||
| 5bd4f169 AM |
10205 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 10206 | to handle the relocations for a section. | |
| 10207 | ||
| 10208 | The relocs are always passed as Rela structures; if the section | |
| 10209 | actually uses Rel structures, the r_addend field will always be | |
| 10210 | zero. | |
| 10211 | ||
| 10212 | This function is responsible for adjust the section contents as | |
| 10213 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 10214 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
10215 | necessary. |
| 10216 | ||
| 10217 | This function does not have to worry about setting the reloc | |
| 10218 | address or the reloc symbol index. | |
| 10219 | ||
| 10220 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 10221 | ||
| 10222 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 10223 | corresponding to the st_shndx field of each local symbol. | |
| 10224 | ||
| 10225 | The global hash table entry for the global symbols can be found | |
| 10226 | via elf_sym_hashes (input_bfd). | |
| 10227 | ||
| 1049f94e | 10228 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
10229 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 10230 | going to be the section symbol corresponding to the output | |
| 10231 | section, which means that the addend must be adjusted | |
| 10232 | accordingly. */ | |
| 10233 | ||
| b34976b6 | 10234 | static bfd_boolean |
| 4ce794b7 AM |
10235 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 10236 | struct bfd_link_info *info, | |
| 10237 | bfd *input_bfd, | |
| 10238 | asection *input_section, | |
| 10239 | bfd_byte *contents, | |
| 10240 | Elf_Internal_Rela *relocs, | |
| 10241 | Elf_Internal_Sym *local_syms, | |
| 10242 | asection **local_sections) | |
| 5bd4f169 | 10243 | { |
| 65f38f15 | 10244 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
10245 | Elf_Internal_Shdr *symtab_hdr; |
| 10246 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 AM |
10247 | Elf_Internal_Rela *rel; |
| 10248 | Elf_Internal_Rela *relend; | |
| 411e1bfb AM |
10249 | Elf_Internal_Rela outrel; |
| 10250 | bfd_byte *loc; | |
| 411e1bfb | 10251 | struct got_entry **local_got_ents; |
| 5bd4f169 | 10252 | bfd_vma TOCstart; |
| b34976b6 AM |
10253 | bfd_boolean ret = TRUE; |
| 10254 | bfd_boolean is_opd; | |
| 96e0dda4 | 10255 | /* Disabled until we sort out how ld should choose 'y' vs 'at'. */ |
| b34976b6 | 10256 | bfd_boolean is_power4 = FALSE; |
| 4fe5ca5b | 10257 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 10258 | |
| 65f38f15 | 10259 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 10260 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
10261 | ppc_howto_init (); |
| 10262 | ||
| 65f38f15 | 10263 | htab = ppc_hash_table (info); |
| ee75fd95 AM |
10264 | |
| 10265 | /* Don't relocate stub sections. */ | |
| 10266 | if (input_section->owner == htab->stub_bfd) | |
| 10267 | return TRUE; | |
| 10268 | ||
| 0c8d6e5c | 10269 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 10270 | |
| 411e1bfb | 10271 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 10272 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 10273 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 10274 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 10275 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 10276 | |
| 5bd4f169 AM |
10277 | rel = relocs; |
| 10278 | relend = relocs + input_section->reloc_count; | |
| 10279 | for (; rel < relend; rel++) | |
| 10280 | { | |
| 04c9666a | 10281 | enum elf_ppc64_reloc_type r_type; |
| 4cc603a5 | 10282 | bfd_vma addend, orig_addend; |
| 5bd4f169 AM |
10283 | bfd_reloc_status_type r; |
| 10284 | Elf_Internal_Sym *sym; | |
| 10285 | asection *sec; | |
| 039b3fef AM |
10286 | struct elf_link_hash_entry *h_elf; |
| 10287 | struct ppc_link_hash_entry *h; | |
| 10288 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 10289 | const char *sym_name; |
| 0d4792f7 | 10290 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 10291 | bfd_vma toc_addend; |
| 951fd09b | 10292 | char tls_mask, tls_gd, tls_type; |
| 0d4792f7 | 10293 | char sym_type; |
| 5bd4f169 | 10294 | bfd_vma relocation; |
| b34976b6 AM |
10295 | bfd_boolean unresolved_reloc; |
| 10296 | bfd_boolean warned; | |
| 50bc7936 | 10297 | unsigned long insn, mask; |
| 721956f4 AM |
10298 | struct ppc_stub_hash_entry *stub_entry; |
| 10299 | bfd_vma max_br_offset; | |
| 10300 | bfd_vma from; | |
| 5bd4f169 | 10301 | |
| 4ce794b7 | 10302 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 10303 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
10304 | |
| 10305 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 10306 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 10307 | proper TOC base to use. */ | |
| 10308 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| 10309 | && rel != relocs | |
| 10310 | && ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_ADDR64 | |
| 10311 | && is_opd) | |
| 10312 | r_symndx = ELF64_R_SYM (rel[-1].r_info); | |
| 10313 | ||
| 4ce794b7 AM |
10314 | sym = NULL; |
| 10315 | sec = NULL; | |
| 039b3fef | 10316 | h_elf = NULL; |
| 4ce794b7 | 10317 | sym_name = NULL; |
| b34976b6 AM |
10318 | unresolved_reloc = FALSE; |
| 10319 | warned = FALSE; | |
| 4cc603a5 | 10320 | orig_addend = rel->r_addend; |
| 65f38f15 | 10321 | |
| 0b13192e | 10322 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
10323 | { |
| 10324 | /* It's a local symbol. */ | |
| 74f0fb50 | 10325 | struct _opd_sec_data *opd; |
| 4025353c | 10326 | |
| 5bd4f169 AM |
10327 | sym = local_syms + r_symndx; |
| 10328 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 10329 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 10330 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 10331 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
10332 | opd = get_opd_info (sec); |
| 10333 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 10334 | { |
| 74f0fb50 | 10335 | long adjust = opd->adjust[(sym->st_value + rel->r_addend) / 8]; |
| 4025353c AM |
10336 | if (adjust == -1) |
| 10337 | relocation = 0; | |
| 10338 | else | |
| 4cc603a5 AM |
10339 | { |
| 10340 | /* If this is a relocation against the opd section sym | |
| 10341 | and we have edited .opd, adjust the reloc addend so | |
| 10342 | that ld -r and ld --emit-relocs output is correct. | |
| 10343 | If it is a reloc against some other .opd symbol, | |
| 10344 | then the symbol value will be adjusted later. */ | |
| 10345 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 10346 | rel->r_addend += adjust; | |
| 10347 | else | |
| 10348 | relocation += adjust; | |
| 10349 | } | |
| 1e2f5b6e | 10350 | } |
| 5bd4f169 AM |
10351 | } |
| 10352 | else | |
| 10353 | { | |
| b2a8e766 AM |
10354 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 10355 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 10356 | h_elf, sec, relocation, |
| b2a8e766 | 10357 | unresolved_reloc, warned); |
| 039b3fef AM |
10358 | sym_name = h_elf->root.root.string; |
| 10359 | sym_type = h_elf->type; | |
| 5bd4f169 | 10360 | } |
| 039b3fef | 10361 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 10362 | |
| ab96bf03 AM |
10363 | if (sec != NULL && elf_discarded_section (sec)) |
| 10364 | { | |
| 10365 | /* For relocs against symbols from removed linkonce sections, | |
| 10366 | or sections discarded by a linker script, we just want the | |
| 10367 | section contents zeroed. Avoid any special processing. */ | |
| 10368 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], input_bfd, | |
| 10369 | contents + rel->r_offset); | |
| 10370 | rel->r_info = 0; | |
| 10371 | rel->r_addend = 0; | |
| 10372 | continue; | |
| 10373 | } | |
| 10374 | ||
| 10375 | if (info->relocatable) | |
| 10376 | continue; | |
| 10377 | ||
| 951fd09b AM |
10378 | /* TLS optimizations. Replace instruction sequences and relocs |
| 10379 | based on information we collected in tls_optimize. We edit | |
| 10380 | RELOCS so that --emit-relocs will output something sensible | |
| 10381 | for the final instruction stream. */ | |
| 10382 | tls_mask = 0; | |
| 10383 | tls_gd = 0; | |
| 0d4792f7 | 10384 | toc_symndx = 0; |
| 727fc41e AM |
10385 | if (h != NULL) |
| 10386 | tls_mask = h->tls_mask; | |
| 10387 | else if (local_got_ents != NULL) | |
| 411e1bfb | 10388 | { |
| 727fc41e AM |
10389 | char *lgot_masks; |
| 10390 | lgot_masks = (char *) (local_got_ents + symtab_hdr->sh_info); | |
| 10391 | tls_mask = lgot_masks[r_symndx]; | |
| 10392 | } | |
| 10393 | if (tls_mask == 0 | |
| 10394 | && (r_type == R_PPC64_TLS | |
| 10395 | || r_type == R_PPC64_TLSGD | |
| 10396 | || r_type == R_PPC64_TLSLD)) | |
| 10397 | { | |
| 10398 | /* Check for toc tls entries. */ | |
| 10399 | char *toc_tls; | |
| 0d4792f7 | 10400 | |
| 727fc41e AM |
10401 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 10402 | &local_syms, rel, input_bfd)) | |
| 10403 | return FALSE; | |
| 0d4792f7 | 10404 | |
| 727fc41e AM |
10405 | if (toc_tls) |
| 10406 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
10407 | } |
| 10408 | ||
| 10409 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 10410 | relocs are used with non-tls syms. */ | |
| 10411 | if (r_symndx != 0 | |
| 10412 | && r_type != R_PPC64_NONE | |
| 10413 | && (h == NULL | |
| 039b3fef AM |
10414 | || h->elf.root.type == bfd_link_hash_defined |
| 10415 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
10416 | && (IS_PPC64_TLS_RELOC (r_type) |
| 10417 | != (sym_type == STT_TLS | |
| 10418 | || (sym_type == STT_SECTION | |
| 10419 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 10420 | { |
| 727fc41e AM |
10421 | if (tls_mask != 0 |
| 10422 | && (r_type == R_PPC64_TLS | |
| 10423 | || r_type == R_PPC64_TLSGD | |
| 10424 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
10425 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 10426 | ; | |
| 10427 | else | |
| 10428 | (*_bfd_error_handler) | |
| 1d483afe | 10429 | (!IS_PPC64_TLS_RELOC (r_type) |
| d003868e AM |
10430 | ? _("%B(%A+0x%lx): %s used with TLS symbol %s") |
| 10431 | : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"), | |
| 10432 | input_bfd, | |
| 10433 | input_section, | |
| 0d4792f7 AM |
10434 | (long) rel->r_offset, |
| 10435 | ppc64_elf_howto_table[r_type]->name, | |
| 10436 | sym_name); | |
| 411e1bfb AM |
10437 | } |
| 10438 | ||
| 10439 | /* Ensure reloc mapping code below stays sane. */ | |
| 10440 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 10441 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 10442 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 10443 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 10444 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 10445 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 10446 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 10447 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 10448 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 10449 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 10450 | abort (); | |
| 0d4792f7 | 10451 | |
| 411e1bfb AM |
10452 | switch (r_type) |
| 10453 | { | |
| 10454 | default: | |
| 411e1bfb AM |
10455 | break; |
| 10456 | ||
| 10457 | case R_PPC64_TOC16: | |
| 10458 | case R_PPC64_TOC16_LO: | |
| 10459 | case R_PPC64_TOC16_DS: | |
| 10460 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
10461 | { |
| 10462 | /* Check for toc tls entries. */ | |
| 10463 | char *toc_tls; | |
| 951fd09b | 10464 | int retval; |
| 411e1bfb | 10465 | |
| 3a71aa26 AM |
10466 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 10467 | &local_syms, rel, input_bfd); | |
| 951fd09b | 10468 | if (retval == 0) |
| 411e1bfb AM |
10469 | return FALSE; |
| 10470 | ||
| 10471 | if (toc_tls) | |
| 10472 | { | |
| 951fd09b | 10473 | tls_mask = *toc_tls; |
| 411e1bfb AM |
10474 | if (r_type == R_PPC64_TOC16_DS |
| 10475 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
10476 | { |
| 10477 | if (tls_mask != 0 | |
| 10478 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 10479 | goto toctprel; | |
| 10480 | } | |
| 411e1bfb | 10481 | else |
| 951fd09b AM |
10482 | { |
| 10483 | /* If we found a GD reloc pair, then we might be | |
| 10484 | doing a GD->IE transition. */ | |
| 10485 | if (retval == 2) | |
| 10486 | { | |
| 10487 | tls_gd = TLS_TPRELGD; | |
| 10488 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 10489 | goto tls_ldgd_opt; |
| 951fd09b AM |
10490 | } |
| 10491 | else if (retval == 3) | |
| 10492 | { | |
| 10493 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 10494 | goto tls_ldgd_opt; |
| 951fd09b AM |
10495 | } |
| 10496 | } | |
| 411e1bfb AM |
10497 | } |
| 10498 | } | |
| 10499 | break; | |
| 10500 | ||
| 10501 | case R_PPC64_GOT_TPREL16_DS: | |
| 10502 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
10503 | if (tls_mask != 0 |
| 10504 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 10505 | { |
| 81407a69 | 10506 | toctprel: |
| 4fe5ca5b | 10507 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
10508 | insn &= 31 << 21; |
| 10509 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 4fe5ca5b | 10510 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); |
| 411e1bfb | 10511 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
10512 | if (toc_symndx != 0) |
| 10513 | { | |
| 10514 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 10515 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
10516 | /* We changed the symbol. Start over in order to |
| 10517 | get h, sym, sec etc. right. */ | |
| 10518 | rel--; | |
| 10519 | continue; | |
| 10520 | } | |
| 10521 | else | |
| 10522 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
10523 | } |
| 10524 | break; | |
| 10525 | ||
| 10526 | case R_PPC64_TLS: | |
| 951fd09b AM |
10527 | if (tls_mask != 0 |
| 10528 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 10529 | { |
| 50bc7936 | 10530 | bfd_vma rtra; |
| 411e1bfb | 10531 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 772119ce | 10532 | if ((insn & ((0x3f << 26) | (31 << 11))) |
| 411e1bfb AM |
10533 | == ((31 << 26) | (13 << 11))) |
| 10534 | rtra = insn & ((1 << 26) - (1 << 16)); | |
| 772119ce | 10535 | else if ((insn & ((0x3f << 26) | (31 << 16))) |
| 411e1bfb AM |
10536 | == ((31 << 26) | (13 << 16))) |
| 10537 | rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5); | |
| 10538 | else | |
| 10539 | abort (); | |
| 10540 | if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1) | |
| 10541 | /* add -> addi. */ | |
| 10542 | insn = 14 << 26; | |
| 10543 | else if ((insn & (31 << 1)) == 23 << 1 | |
| 10544 | && ((insn & (31 << 6)) < 14 << 6 | |
| 10545 | || ((insn & (31 << 6)) >= 16 << 6 | |
| 10546 | && (insn & (31 << 6)) < 24 << 6))) | |
| 10547 | /* load and store indexed -> dform. */ | |
| 10548 | insn = (32 | ((insn >> 6) & 31)) << 26; | |
| 10549 | else if ((insn & (31 << 1)) == 21 << 1 | |
| 10550 | && (insn & (0x1a << 6)) == 0) | |
| 10551 | /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */ | |
| 10552 | insn = (((58 | ((insn >> 6) & 4)) << 26) | |
| 10553 | | ((insn >> 6) & 1)); | |
| 10554 | else if ((insn & (31 << 1)) == 21 << 1 | |
| 10555 | && (insn & ((1 << 11) - (1 << 1))) == 341 << 1) | |
| 10556 | /* lwax -> lwa. */ | |
| 10557 | insn = (58 << 26) | 2; | |
| 10558 | else | |
| 10559 | abort (); | |
| 10560 | insn |= rtra; | |
| 10561 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 411e1bfb | 10562 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
10563 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 10564 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
10565 | r_type = R_PPC64_TPREL16_LO; |
| 10566 | if (toc_symndx != 0) | |
| 10567 | { | |
| 10568 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 10569 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
10570 | /* We changed the symbol. Start over in order to |
| 10571 | get h, sym, sec etc. right. */ | |
| 10572 | rel--; | |
| 10573 | continue; | |
| 10574 | } | |
| 10575 | else | |
| 10576 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
10577 | } |
| 10578 | break; | |
| 10579 | ||
| 411e1bfb AM |
10580 | case R_PPC64_GOT_TLSGD16_HI: |
| 10581 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
10582 | tls_gd = TLS_TPRELGD; |
| 10583 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 10584 | goto tls_gdld_hi; | |
| 10585 | break; | |
| 10586 | ||
| 411e1bfb AM |
10587 | case R_PPC64_GOT_TLSLD16_HI: |
| 10588 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 10589 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 10590 | { |
| 951fd09b AM |
10591 | tls_gdld_hi: |
| 10592 | if ((tls_mask & tls_gd) != 0) | |
| 10593 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 10594 | + R_PPC64_GOT_TPREL16_DS); | |
| 10595 | else | |
| 411e1bfb | 10596 | { |
| 951fd09b | 10597 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 4fe5ca5b | 10598 | rel->r_offset -= d_offset; |
| 951fd09b | 10599 | r_type = R_PPC64_NONE; |
| 411e1bfb | 10600 | } |
| 951fd09b | 10601 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
10602 | } |
| 10603 | break; | |
| 10604 | ||
| 951fd09b AM |
10605 | case R_PPC64_GOT_TLSGD16: |
| 10606 | case R_PPC64_GOT_TLSGD16_LO: | |
| 10607 | tls_gd = TLS_TPRELGD; | |
| 10608 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 10609 | goto tls_ldgd_opt; |
| 951fd09b | 10610 | break; |
| 411e1bfb | 10611 | |
| 951fd09b AM |
10612 | case R_PPC64_GOT_TLSLD16: |
| 10613 | case R_PPC64_GOT_TLSLD16_LO: | |
| 10614 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 10615 | { | |
| 3a71aa26 | 10616 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
10617 | bfd_vma offset; |
| 10618 | ||
| 10619 | tls_ldgd_opt: | |
| 727fc41e AM |
10620 | offset = (bfd_vma) -1; |
| 10621 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 10622 | __tls_get_addr calls, we must trust that the call | |
| 10623 | stays with its arg setup insns, ie. that the next | |
| 10624 | reloc is the __tls_get_addr call associated with | |
| 10625 | the current reloc. Edit both insns. */ | |
| 10626 | if (input_section->has_tls_get_addr_call | |
| 10627 | && rel + 1 < relend | |
| 10628 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 10629 | htab->tls_get_addr, | |
| 10630 | htab->tls_get_addr_fd)) | |
| 10631 | offset = rel[1].r_offset; | |
| 102890f0 | 10632 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 10633 | { |
| 102890f0 | 10634 | /* IE */ |
| 3a71aa26 AM |
10635 | insn1 = bfd_get_32 (output_bfd, |
| 10636 | contents + rel->r_offset - d_offset); | |
| 102890f0 AM |
10637 | insn1 &= (1 << 26) - (1 << 2); |
| 10638 | insn1 |= 58 << 26; /* ld */ | |
| 10639 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e AM |
10640 | if (offset != (bfd_vma) -1) |
| 10641 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
| 10642 | R_PPC64_NONE); | |
| 102890f0 AM |
10643 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 10644 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 10645 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 10646 | else |
| 102890f0 AM |
10647 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 10648 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 10649 | } | |
| 10650 | else | |
| 10651 | { | |
| 10652 | /* LE */ | |
| 10653 | insn1 = 0x3c6d0000; /* addis 3,13,0 */ | |
| 10654 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 10655 | if (tls_gd == 0) | |
| 951fd09b | 10656 | { |
| 102890f0 | 10657 | /* Was an LD reloc. */ |
| 1d483afe AM |
10658 | if (toc_symndx) |
| 10659 | sec = local_sections[toc_symndx]; | |
| 10660 | for (r_symndx = 0; | |
| 10661 | r_symndx < symtab_hdr->sh_info; | |
| 10662 | r_symndx++) | |
| 10663 | if (local_sections[r_symndx] == sec) | |
| 10664 | break; | |
| 10665 | if (r_symndx >= symtab_hdr->sh_info) | |
| 10666 | r_symndx = 0; | |
| 102890f0 | 10667 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| 1d483afe AM |
10668 | if (r_symndx != 0) |
| 10669 | rel->r_addend -= (local_syms[r_symndx].st_value | |
| 10670 | + sec->output_offset | |
| 10671 | + sec->output_section->vma); | |
| 951fd09b | 10672 | } |
| 102890f0 | 10673 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
10674 | { |
| 10675 | r_symndx = toc_symndx; | |
| 10676 | rel->r_addend = toc_addend; | |
| 10677 | } | |
| 102890f0 AM |
10678 | r_type = R_PPC64_TPREL16_HA; |
| 10679 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
10680 | if (offset != (bfd_vma) -1) |
| 10681 | { | |
| 10682 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 10683 | R_PPC64_TPREL16_LO); | |
| 10684 | rel[1].r_offset = offset + d_offset; | |
| 10685 | rel[1].r_addend = rel->r_addend; | |
| 10686 | } | |
| 102890f0 | 10687 | } |
| 3a71aa26 AM |
10688 | bfd_put_32 (output_bfd, insn1, |
| 10689 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
10690 | if (offset != (bfd_vma) -1) |
| 10691 | { | |
| 10692 | insn3 = bfd_get_32 (output_bfd, | |
| 10693 | contents + offset + 4); | |
| 10694 | if (insn3 == NOP | |
| 10695 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 10696 | { | |
| 10697 | rel[1].r_offset += 4; | |
| 10698 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 10699 | insn2 = NOP; | |
| 10700 | } | |
| 10701 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 10702 | } | |
| 10703 | if ((tls_mask & tls_gd) == 0 | |
| 10704 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 10705 | { | |
| 10706 | /* We changed the symbol. Start over in order | |
| 10707 | to get h, sym, sec etc. right. */ | |
| 10708 | rel--; | |
| 10709 | continue; | |
| 10710 | } | |
| 10711 | } | |
| 10712 | break; | |
| 10713 | ||
| 10714 | case R_PPC64_TLSGD: | |
| 10715 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 10716 | { | |
| 10717 | unsigned int insn2, insn3; | |
| 10718 | bfd_vma offset = rel->r_offset; | |
| 10719 | ||
| 10720 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 10721 | { | |
| 10722 | /* IE */ | |
| 10723 | r_type = R_PPC64_NONE; | |
| 10724 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 10725 | } | |
| 10726 | else | |
| 10727 | { | |
| 10728 | /* LE */ | |
| 10729 | if (toc_symndx != 0) | |
| 10730 | { | |
| 10731 | r_symndx = toc_symndx; | |
| 10732 | rel->r_addend = toc_addend; | |
| 10733 | } | |
| 10734 | r_type = R_PPC64_TPREL16_LO; | |
| 10735 | rel->r_offset = offset + d_offset; | |
| 10736 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 10737 | } | |
| 10738 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 10739 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 10740 | BFD_ASSERT (offset == rel[1].r_offset); | |
| 10741 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
| 10742 | R_PPC64_NONE); | |
| 3a71aa26 AM |
10743 | insn3 = bfd_get_32 (output_bfd, |
| 10744 | contents + offset + 4); | |
| 102890f0 AM |
10745 | if (insn3 == NOP |
| 10746 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 10747 | { | |
| 727fc41e | 10748 | rel->r_offset += 4; |
| 3a71aa26 AM |
10749 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 10750 | insn2 = NOP; | |
| 102890f0 | 10751 | } |
| 102890f0 | 10752 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 10753 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| 102890f0 | 10754 | { |
| 102890f0 AM |
10755 | rel--; |
| 10756 | continue; | |
| 411e1bfb | 10757 | } |
| 411e1bfb | 10758 | } |
| 411e1bfb AM |
10759 | break; |
| 10760 | ||
| 727fc41e AM |
10761 | case R_PPC64_TLSLD: |
| 10762 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 10763 | { | |
| 10764 | unsigned int insn2, insn3; | |
| 10765 | bfd_vma offset = rel->r_offset; | |
| 10766 | ||
| 10767 | if (toc_symndx) | |
| 10768 | sec = local_sections[toc_symndx]; | |
| 10769 | for (r_symndx = 0; | |
| 10770 | r_symndx < symtab_hdr->sh_info; | |
| 10771 | r_symndx++) | |
| 10772 | if (local_sections[r_symndx] == sec) | |
| 10773 | break; | |
| 10774 | if (r_symndx >= symtab_hdr->sh_info) | |
| 10775 | r_symndx = 0; | |
| 10776 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 10777 | if (r_symndx != 0) | |
| 10778 | rel->r_addend -= (local_syms[r_symndx].st_value | |
| 10779 | + sec->output_offset | |
| 10780 | + sec->output_section->vma); | |
| 10781 | ||
| 10782 | r_type = R_PPC64_TPREL16_LO; | |
| 10783 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 10784 | rel->r_offset = offset + d_offset; | |
| 10785 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 10786 | BFD_ASSERT (offset == rel[1].r_offset); | |
| 10787 | rel[1].r_info = ELF64_R_INFO (ELF64_R_SYM (rel[1].r_info), | |
| 10788 | R_PPC64_NONE); | |
| 10789 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 10790 | insn3 = bfd_get_32 (output_bfd, | |
| 10791 | contents + offset + 4); | |
| 10792 | if (insn3 == NOP | |
| 10793 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 10794 | { | |
| 10795 | rel->r_offset += 4; | |
| 10796 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 10797 | insn2 = NOP; | |
| 10798 | } | |
| 10799 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 10800 | rel--; | |
| 10801 | continue; | |
| 10802 | } | |
| 10803 | break; | |
| 10804 | ||
| 411e1bfb | 10805 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
10806 | if (rel + 1 < relend |
| 10807 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 10808 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 10809 | { |
| 951fd09b AM |
10810 | if ((tls_mask & TLS_GD) == 0) |
| 10811 | { | |
| 10812 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 10813 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 10814 | r_type = R_PPC64_TPREL64; | |
| 10815 | else | |
| 10816 | { | |
| 4ce794b7 | 10817 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
10818 | r_type = R_PPC64_NONE; |
| 10819 | } | |
| 10820 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 10821 | } | |
| 10822 | } | |
| 10823 | else | |
| 10824 | { | |
| 10825 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 10826 | { |
| 4ce794b7 | 10827 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 10828 | r_type = R_PPC64_NONE; |
| 951fd09b | 10829 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 10830 | } |
| 411e1bfb AM |
10831 | } |
| 10832 | break; | |
| 10833 | ||
| 10834 | case R_PPC64_TPREL64: | |
| 951fd09b | 10835 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
10836 | { |
| 10837 | r_type = R_PPC64_NONE; | |
| 10838 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 10839 | } | |
| 10840 | break; | |
| 10841 | } | |
| 10842 | ||
| 10843 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 10844 | insn = 0; |
| b25116a9 AM |
10845 | max_br_offset = 1 << 25; |
| 10846 | addend = rel->r_addend; | |
| 65f38f15 | 10847 | switch (r_type) |
| 5bd4f169 AM |
10848 | { |
| 10849 | default: | |
| 65f38f15 | 10850 | break; |
| 5bd4f169 | 10851 | |
| 65f38f15 AM |
10852 | /* Branch taken prediction relocations. */ |
| 10853 | case R_PPC64_ADDR14_BRTAKEN: | |
| 10854 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
10855 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 10856 | /* Fall thru. */ | |
| 65f38f15 | 10857 | |
| 86c76c7b | 10858 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
10859 | case R_PPC64_ADDR14_BRNTAKEN: |
| 10860 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
10861 | insn |= bfd_get_32 (output_bfd, |
| 10862 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 10863 | /* Fall thru. */ |
| 86c76c7b | 10864 | |
| b25116a9 AM |
10865 | case R_PPC64_REL14: |
| 10866 | max_br_offset = 1 << 15; | |
| 10867 | /* Fall thru. */ | |
| 5bd4f169 | 10868 | |
| 65f38f15 | 10869 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
10870 | /* Calls to functions with a different TOC, such as calls to |
| 10871 | shared objects, need to alter the TOC pointer. This is | |
| 10872 | done using a linkage stub. A REL24 branching to these | |
| 10873 | linkage stubs needs to be followed by a nop, as the nop | |
| 10874 | will be replaced with an instruction to restore the TOC | |
| 10875 | base pointer. */ | |
| b25116a9 | 10876 | stub_entry = NULL; |
| 8387904d | 10877 | fdh = h; |
| ad8e1ba5 | 10878 | if (((h != NULL |
| 039b3fef AM |
10879 | && (((fdh = h->oh) != NULL |
| 10880 | && fdh->elf.plt.plist != NULL) | |
| 10881 | || (fdh = h)->elf.plt.plist != NULL)) | |
| 8387904d | 10882 | || (sec != NULL |
| ad8e1ba5 | 10883 | && sec->output_section != NULL |
| b25116a9 | 10884 | && sec->id <= htab->top_id |
| ad8e1ba5 AM |
10885 | && (htab->stub_group[sec->id].toc_off |
| 10886 | != htab->stub_group[input_section->id].toc_off))) | |
| 721956f4 | 10887 | && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh, |
| ad8e1ba5 AM |
10888 | rel, htab)) != NULL |
| 10889 | && (stub_entry->stub_type == ppc_stub_plt_call | |
| 10890 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off | |
| 10891 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 10892 | { |
| b25116a9 | 10893 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 10894 | |
| eea6121a | 10895 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 10896 | { |
| b25116a9 AM |
10897 | unsigned long nop; |
| 10898 | nop = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 10899 | if (nop == NOP | |
| 10900 | || nop == CROR_151515 || nop == CROR_313131) | |
| 41bd81ab | 10901 | { |
| 4ce794b7 | 10902 | bfd_put_32 (input_bfd, LD_R2_40R1, |
| 411e1bfb | 10903 | contents + rel->r_offset + 4); |
| b25116a9 | 10904 | can_plt_call = TRUE; |
| 41bd81ab | 10905 | } |
| 5bd4f169 | 10906 | } |
| 721956f4 AM |
10907 | |
| 10908 | if (!can_plt_call) | |
| 10909 | { | |
| ad8e1ba5 AM |
10910 | if (stub_entry->stub_type == ppc_stub_plt_call) |
| 10911 | { | |
| 10912 | /* If this is a plain branch rather than a branch | |
| 4fa1c237 AM |
10913 | and link, don't require a nop. However, don't |
| 10914 | allow tail calls in a shared library as they | |
| 10915 | will result in r2 being corrupted. */ | |
| b25116a9 AM |
10916 | unsigned long br; |
| 10917 | br = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 4fa1c237 | 10918 | if (info->executable && (br & 1) == 0) |
| b25116a9 | 10919 | can_plt_call = TRUE; |
| 15b552e9 AM |
10920 | else |
| 10921 | stub_entry = NULL; | |
| ad8e1ba5 | 10922 | } |
| 6ab189d5 | 10923 | else if (h != NULL |
| 039b3fef | 10924 | && strcmp (h->elf.root.root.string, |
| 6ab189d5 AM |
10925 | ".__libc_start_main") == 0) |
| 10926 | { | |
| 10927 | /* Allow crt1 branch to go via a toc adjusting stub. */ | |
| b25116a9 | 10928 | can_plt_call = TRUE; |
| 6ab189d5 | 10929 | } |
| ad8e1ba5 AM |
10930 | else |
| 10931 | { | |
| 10932 | if (strcmp (input_section->output_section->name, | |
| 10933 | ".init") == 0 | |
| 10934 | || strcmp (input_section->output_section->name, | |
| 10935 | ".fini") == 0) | |
| 10936 | (*_bfd_error_handler) | |
| d003868e | 10937 | (_("%B(%A+0x%lx): automatic multiple TOCs " |
| ad8e1ba5 AM |
10938 | "not supported using your crt files; " |
| 10939 | "recompile with -mminimal-toc or upgrade gcc"), | |
| d003868e AM |
10940 | input_bfd, |
| 10941 | input_section, | |
| ad8e1ba5 AM |
10942 | (long) rel->r_offset); |
| 10943 | else | |
| 10944 | (*_bfd_error_handler) | |
| d003868e | 10945 | (_("%B(%A+0x%lx): sibling call optimization to `%s' " |
| ad8e1ba5 AM |
10946 | "does not allow automatic multiple TOCs; " |
| 10947 | "recompile with -mminimal-toc or " | |
| 10948 | "-fno-optimize-sibling-calls, " | |
| 10949 | "or make `%s' extern"), | |
| d003868e AM |
10950 | input_bfd, |
| 10951 | input_section, | |
| ad8e1ba5 AM |
10952 | (long) rel->r_offset, |
| 10953 | sym_name, | |
| 10954 | sym_name); | |
| 10955 | bfd_set_error (bfd_error_bad_value); | |
| 10956 | ret = FALSE; | |
| 10957 | } | |
| 721956f4 AM |
10958 | } |
| 10959 | ||
| b25116a9 AM |
10960 | if (can_plt_call |
| 10961 | && stub_entry->stub_type == ppc_stub_plt_call) | |
| 10962 | unresolved_reloc = FALSE; | |
| 10963 | } | |
| 10964 | ||
| 8387904d AM |
10965 | if (stub_entry == NULL |
| 10966 | && get_opd_info (sec) != NULL) | |
| 10967 | { | |
| 10968 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
10969 | bfd_vma off = (relocation + addend |
| 10970 | - sec->output_section->vma | |
| 10971 | - sec->output_offset); | |
| 8387904d AM |
10972 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL); |
| 10973 | if (dest != (bfd_vma) -1) | |
| 10974 | { | |
| 10975 | relocation = dest; | |
| 10976 | addend = 0; | |
| 10977 | } | |
| 10978 | } | |
| 10979 | ||
| b25116a9 AM |
10980 | /* If the branch is out of reach we ought to have a long |
| 10981 | branch stub. */ | |
| 10982 | from = (rel->r_offset | |
| 10983 | + input_section->output_offset | |
| 10984 | + input_section->output_section->vma); | |
| 10985 | ||
| 10986 | if (stub_entry == NULL | |
| 4cc603a5 | 10987 | && (relocation + addend - from + max_br_offset |
| b25116a9 AM |
10988 | >= 2 * max_br_offset) |
| 10989 | && r_type != R_PPC64_ADDR14_BRTAKEN | |
| 10990 | && r_type != R_PPC64_ADDR14_BRNTAKEN) | |
| 039b3fef AM |
10991 | stub_entry = ppc_get_stub_entry (input_section, sec, h, rel, |
| 10992 | htab); | |
| b25116a9 AM |
10993 | |
| 10994 | if (stub_entry != NULL) | |
| 10995 | { | |
| 10996 | /* Munge up the value and addend so that we call the stub | |
| 10997 | rather than the procedure directly. */ | |
| 10998 | relocation = (stub_entry->stub_offset | |
| 10999 | + stub_entry->stub_sec->output_offset | |
| 11000 | + stub_entry->stub_sec->output_section->vma); | |
| 11001 | addend = 0; | |
| 11002 | } | |
| 11003 | ||
| 11004 | if (insn != 0) | |
| 11005 | { | |
| 11006 | if (is_power4) | |
| 721956f4 | 11007 | { |
| b25116a9 AM |
11008 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 11009 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 11010 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 11011 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 11012 | insn |= 0x02 << 21; | |
| 11013 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 11014 | insn |= 0x08 << 21; | |
| 11015 | else | |
| 11016 | break; | |
| 11017 | } | |
| 11018 | else | |
| 11019 | { | |
| 11020 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 11021 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 11022 | insn ^= 0x01 << 21; |
| 721956f4 | 11023 | } |
| b25116a9 AM |
11024 | |
| 11025 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 11026 | } |
| e86ce104 | 11027 | |
| 06da1e8e AM |
11028 | /* NOP out calls to undefined weak functions. |
| 11029 | We can thus call a weak function without first | |
| 11030 | checking whether the function is defined. */ | |
| b25116a9 | 11031 | else if (h != NULL |
| 039b3fef | 11032 | && h->elf.root.type == bfd_link_hash_undefweak |
| b25116a9 AM |
11033 | && r_type == R_PPC64_REL24 |
| 11034 | && relocation == 0 | |
| 4cc603a5 | 11035 | && addend == 0) |
| e86ce104 | 11036 | { |
| 06da1e8e AM |
11037 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 11038 | continue; | |
| e86ce104 | 11039 | } |
| 65f38f15 AM |
11040 | break; |
| 11041 | } | |
| 5bd4f169 | 11042 | |
| 65f38f15 | 11043 | /* Set `addend'. */ |
| 411e1bfb | 11044 | tls_type = 0; |
| 65f38f15 AM |
11045 | switch (r_type) |
| 11046 | { | |
| 11047 | default: | |
| 11048 | (*_bfd_error_handler) | |
| d003868e AM |
11049 | (_("%B: unknown relocation type %d for symbol %s"), |
| 11050 | input_bfd, (int) r_type, sym_name); | |
| 5bd4f169 | 11051 | |
| 65f38f15 | 11052 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 11053 | ret = FALSE; |
| 65f38f15 | 11054 | continue; |
| 5bd4f169 | 11055 | |
| 65f38f15 | 11056 | case R_PPC64_NONE: |
| 411e1bfb | 11057 | case R_PPC64_TLS: |
| 727fc41e AM |
11058 | case R_PPC64_TLSGD: |
| 11059 | case R_PPC64_TLSLD: | |
| 04c9666a AM |
11060 | case R_PPC64_GNU_VTINHERIT: |
| 11061 | case R_PPC64_GNU_VTENTRY: | |
| 65f38f15 | 11062 | continue; |
| 5bd4f169 AM |
11063 | |
| 11064 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 11065 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 11066 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 11067 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
11068 | case R_PPC64_GOT_TLSGD16: |
| 11069 | case R_PPC64_GOT_TLSGD16_LO: | |
| 11070 | case R_PPC64_GOT_TLSGD16_HI: | |
| 11071 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 11072 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
11073 | goto dogot; |
| 11074 | ||
| 11075 | case R_PPC64_GOT_TLSLD16: | |
| 11076 | case R_PPC64_GOT_TLSLD16_LO: | |
| 11077 | case R_PPC64_GOT_TLSLD16_HI: | |
| 11078 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 11079 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
11080 | goto dogot; |
| 11081 | ||
| 11082 | case R_PPC64_GOT_TPREL16_DS: | |
| 11083 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 11084 | case R_PPC64_GOT_TPREL16_HI: | |
| 11085 | case R_PPC64_GOT_TPREL16_HA: | |
| 11086 | tls_type = TLS_TLS | TLS_TPREL; | |
| 11087 | goto dogot; | |
| 11088 | ||
| 11089 | case R_PPC64_GOT_DTPREL16_DS: | |
| 11090 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 11091 | case R_PPC64_GOT_DTPREL16_HI: | |
| 11092 | case R_PPC64_GOT_DTPREL16_HA: | |
| 11093 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 11094 | goto dogot; | |
| 11095 | ||
| 65f38f15 AM |
11096 | case R_PPC64_GOT16: |
| 11097 | case R_PPC64_GOT16_LO: | |
| 11098 | case R_PPC64_GOT16_HI: | |
| 11099 | case R_PPC64_GOT16_HA: | |
| 11100 | case R_PPC64_GOT16_DS: | |
| 11101 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 11102 | dogot: |
| 5bd4f169 AM |
11103 | { |
| 11104 | /* Relocation is to the entry for this symbol in the global | |
| 11105 | offset table. */ | |
| e717da7e | 11106 | asection *got; |
| d881513a | 11107 | bfd_vma *offp; |
| 5bd4f169 | 11108 | bfd_vma off; |
| d881513a | 11109 | unsigned long indx = 0; |
| 65f38f15 | 11110 | |
| d881513a AM |
11111 | if (tls_type == (TLS_TLS | TLS_LD) |
| 11112 | && (h == NULL | |
| f5385ebf | 11113 | || !h->elf.def_dynamic)) |
| e717da7e | 11114 | offp = &ppc64_tlsld_got (input_bfd)->offset; |
| 411e1bfb | 11115 | else |
| 5bd4f169 | 11116 | { |
| d881513a | 11117 | struct got_entry *ent; |
| 5bd4f169 | 11118 | |
| d881513a AM |
11119 | if (h != NULL) |
| 11120 | { | |
| 11121 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 039b3fef AM |
11122 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, |
| 11123 | &h->elf) | |
| d881513a | 11124 | || (info->shared |
| 039b3fef | 11125 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
| d881513a AM |
11126 | /* This is actually a static link, or it is a |
| 11127 | -Bsymbolic link and the symbol is defined | |
| 11128 | locally, or the symbol was forced to be local | |
| 11129 | because of a version file. */ | |
| 11130 | ; | |
| 11131 | else | |
| 11132 | { | |
| 039b3fef | 11133 | indx = h->elf.dynindx; |
| d881513a AM |
11134 | unresolved_reloc = FALSE; |
| 11135 | } | |
| 039b3fef | 11136 | ent = h->elf.got.glist; |
| d881513a | 11137 | } |
| 411e1bfb | 11138 | else |
| 5bd4f169 | 11139 | { |
| d881513a AM |
11140 | if (local_got_ents == NULL) |
| 11141 | abort (); | |
| 11142 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 11143 | } |
| d881513a AM |
11144 | |
| 11145 | for (; ent != NULL; ent = ent->next) | |
| 4cc603a5 | 11146 | if (ent->addend == orig_addend |
| e717da7e | 11147 | && ent->owner == input_bfd |
| d881513a AM |
11148 | && ent->tls_type == tls_type) |
| 11149 | break; | |
| 11150 | if (ent == NULL) | |
| 11151 | abort (); | |
| 11152 | offp = &ent->got.offset; | |
| 5bd4f169 | 11153 | } |
| 411e1bfb | 11154 | |
| e717da7e AM |
11155 | got = ppc64_elf_tdata (input_bfd)->got; |
| 11156 | if (got == NULL) | |
| 11157 | abort (); | |
| 11158 | ||
| 411e1bfb AM |
11159 | /* The offset must always be a multiple of 8. We use the |
| 11160 | least significant bit to record whether we have already | |
| 11161 | processed this entry. */ | |
| d881513a | 11162 | off = *offp; |
| 411e1bfb AM |
11163 | if ((off & 1) != 0) |
| 11164 | off &= ~1; | |
| 5bd4f169 AM |
11165 | else |
| 11166 | { | |
| 411e1bfb AM |
11167 | /* Generate relocs for the dynamic linker, except in |
| 11168 | the case of TLSLD where we'll use one entry per | |
| 11169 | module. */ | |
| e717da7e AM |
11170 | asection *relgot = ppc64_elf_tdata (input_bfd)->relgot; |
| 11171 | ||
| d881513a | 11172 | *offp = off | 1; |
| 4e795f50 | 11173 | if ((info->shared || indx != 0) |
| 3a71aa26 AM |
11174 | && (offp == &ppc64_tlsld_got (input_bfd)->offset |
| 11175 | || h == NULL | |
| 039b3fef AM |
11176 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 11177 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 5bd4f169 | 11178 | { |
| e717da7e AM |
11179 | outrel.r_offset = (got->output_section->vma |
| 11180 | + got->output_offset | |
| 411e1bfb | 11181 | + off); |
| 4cc603a5 | 11182 | outrel.r_addend = addend; |
| d881513a | 11183 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 11184 | { |
| 411e1bfb | 11185 | outrel.r_addend = 0; |
| e515b051 | 11186 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
11187 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 11188 | { | |
| e717da7e AM |
11189 | loc = relgot->contents; |
| 11190 | loc += (relgot->reloc_count++ | |
| d881513a AM |
11191 | * sizeof (Elf64_External_Rela)); |
| 11192 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 11193 | &outrel, loc); | |
| e515b051 | 11194 | outrel.r_offset += 8; |
| 4cc603a5 | 11195 | outrel.r_addend = addend; |
| d881513a AM |
11196 | outrel.r_info |
| 11197 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 11198 | } |
| 411e1bfb | 11199 | } |
| 951fd09b | 11200 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 11201 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 11202 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb AM |
11203 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 11204 | else if (indx == 0) | |
| 81407a69 AM |
11205 | { |
| 11206 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_RELATIVE); | |
| 11207 | ||
| 11208 | /* Write the .got section contents for the sake | |
| 11209 | of prelink. */ | |
| e717da7e | 11210 | loc = got->contents + off; |
| 23fbd6fa JJ |
11211 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 11212 | loc); | |
| 81407a69 | 11213 | } |
| 411e1bfb AM |
11214 | else |
| 11215 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 81407a69 AM |
11216 | |
| 11217 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
11218 | { |
| 11219 | outrel.r_addend += relocation; | |
| 11220 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| e1918d23 | 11221 | outrel.r_addend -= htab->elf.tls_sec->vma; |
| e515b051 | 11222 | } |
| e717da7e AM |
11223 | loc = relgot->contents; |
| 11224 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
11225 | * sizeof (Elf64_External_Rela)); |
| 11226 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 11227 | } | |
| 11228 | ||
| ad8e1ba5 | 11229 | /* Init the .got section contents here if we're not |
| 81407a69 | 11230 | emitting a reloc. */ |
| d881513a | 11231 | else |
| 411e1bfb | 11232 | { |
| 4cc603a5 | 11233 | relocation += addend; |
| 7b609f53 AM |
11234 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 11235 | relocation = 1; | |
| 11236 | else if (tls_type != 0) | |
| 411e1bfb | 11237 | { |
| e1918d23 | 11238 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 7b609f53 | 11239 | if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 11240 | relocation += DTP_OFFSET - TP_OFFSET; |
| 5bd4f169 | 11241 | |
| 7b609f53 AM |
11242 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 11243 | { | |
| 11244 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 11245 | got->contents + off + 8); |
| 7b609f53 AM |
11246 | relocation = 1; |
| 11247 | } | |
| 411e1bfb | 11248 | } |
| 7b609f53 | 11249 | |
| 411e1bfb | 11250 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 11251 | got->contents + off); |
| 5bd4f169 AM |
11252 | } |
| 11253 | } | |
| 11254 | ||
| 65f38f15 AM |
11255 | if (off >= (bfd_vma) -2) |
| 11256 | abort (); | |
| 11257 | ||
| e717da7e | 11258 | relocation = got->output_offset + off; |
| 65f38f15 | 11259 | |
| 5bd4f169 | 11260 | /* TOC base (r2) is TOC start plus 0x8000. */ |
| e717da7e | 11261 | addend = -TOC_BASE_OFF; |
| 5bd4f169 | 11262 | } |
| 65f38f15 AM |
11263 | break; |
| 11264 | ||
| 11265 | case R_PPC64_PLT16_HA: | |
| 11266 | case R_PPC64_PLT16_HI: | |
| 11267 | case R_PPC64_PLT16_LO: | |
| 11268 | case R_PPC64_PLT32: | |
| 11269 | case R_PPC64_PLT64: | |
| 11270 | /* Relocation is to the entry for this symbol in the | |
| 11271 | procedure linkage table. */ | |
| 11272 | ||
| 11273 | /* Resolve a PLT reloc against a local symbol directly, | |
| 11274 | without using the procedure linkage table. */ | |
| 11275 | if (h == NULL) | |
| 11276 | break; | |
| 11277 | ||
| 411e1bfb AM |
11278 | /* It's possible that we didn't make a PLT entry for this |
| 11279 | symbol. This happens when statically linking PIC code, | |
| 11280 | or when using -Bsymbolic. Go find a match if there is a | |
| 11281 | PLT entry. */ | |
| 4ce794b7 | 11282 | if (htab->plt != NULL) |
| 65f38f15 | 11283 | { |
| 411e1bfb | 11284 | struct plt_entry *ent; |
| 039b3fef | 11285 | for (ent = h->elf.plt.plist; ent != NULL; ent = ent->next) |
| 4cc603a5 | 11286 | if (ent->addend == orig_addend |
| 411e1bfb AM |
11287 | && ent->plt.offset != (bfd_vma) -1) |
| 11288 | { | |
| 4ce794b7 AM |
11289 | relocation = (htab->plt->output_section->vma |
| 11290 | + htab->plt->output_offset | |
| 411e1bfb AM |
11291 | + ent->plt.offset); |
| 11292 | unresolved_reloc = FALSE; | |
| 11293 | } | |
| 65f38f15 | 11294 | } |
| 65f38f15 | 11295 | break; |
| 5bd4f169 | 11296 | |
| 0b13192e AM |
11297 | case R_PPC64_TOC: |
| 11298 | /* Relocation value is TOC base. */ | |
| 11299 | relocation = TOCstart; | |
| 11300 | if (r_symndx == 0) | |
| 11301 | relocation += htab->stub_group[input_section->id].toc_off; | |
| 8517fae7 AM |
11302 | else if (unresolved_reloc) |
| 11303 | ; | |
| 11304 | else if (sec != NULL && sec->id <= htab->top_id) | |
| 0b13192e AM |
11305 | relocation += htab->stub_group[sec->id].toc_off; |
| 11306 | else | |
| 11307 | unresolved_reloc = TRUE; | |
| ab96bf03 | 11308 | goto dodyn; |
| 0b13192e | 11309 | |
| 5bd4f169 AM |
11310 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 11311 | which is the address of the start of the TOC plus 0x8000. | |
| 11312 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 11313 | in this order. */ | |
| 65f38f15 AM |
11314 | case R_PPC64_TOC16: |
| 11315 | case R_PPC64_TOC16_LO: | |
| 11316 | case R_PPC64_TOC16_HI: | |
| 11317 | case R_PPC64_TOC16_DS: | |
| 11318 | case R_PPC64_TOC16_LO_DS: | |
| 11319 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 11320 | addend -= TOCstart + htab->stub_group[input_section->id].toc_off; |
| 5bd4f169 AM |
11321 | break; |
| 11322 | ||
| 11323 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
11324 | case R_PPC64_SECTOFF: |
| 11325 | case R_PPC64_SECTOFF_LO: | |
| 11326 | case R_PPC64_SECTOFF_HI: | |
| 11327 | case R_PPC64_SECTOFF_DS: | |
| 11328 | case R_PPC64_SECTOFF_LO_DS: | |
| 11329 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 11330 | if (sec != NULL) |
| 65f38f15 | 11331 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
11332 | break; |
| 11333 | ||
| 721956f4 AM |
11334 | case R_PPC64_REL14: |
| 11335 | case R_PPC64_REL14_BRNTAKEN: | |
| 11336 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
11337 | case R_PPC64_REL24: |
| 11338 | break; | |
| 11339 | ||
| 411e1bfb AM |
11340 | case R_PPC64_TPREL16: |
| 11341 | case R_PPC64_TPREL16_LO: | |
| 11342 | case R_PPC64_TPREL16_HI: | |
| 11343 | case R_PPC64_TPREL16_HA: | |
| 11344 | case R_PPC64_TPREL16_DS: | |
| 11345 | case R_PPC64_TPREL16_LO_DS: | |
| 11346 | case R_PPC64_TPREL16_HIGHER: | |
| 11347 | case R_PPC64_TPREL16_HIGHERA: | |
| 11348 | case R_PPC64_TPREL16_HIGHEST: | |
| 11349 | case R_PPC64_TPREL16_HIGHESTA: | |
| e1918d23 | 11350 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
11351 | if (info->shared) |
| 11352 | /* The TPREL16 relocs shouldn't really be used in shared | |
| 11353 | libs as they will result in DT_TEXTREL being set, but | |
| 11354 | support them anyway. */ | |
| 11355 | goto dodyn; | |
| 11356 | break; | |
| 11357 | ||
| 11358 | case R_PPC64_DTPREL16: | |
| 11359 | case R_PPC64_DTPREL16_LO: | |
| 11360 | case R_PPC64_DTPREL16_HI: | |
| 11361 | case R_PPC64_DTPREL16_HA: | |
| 11362 | case R_PPC64_DTPREL16_DS: | |
| 11363 | case R_PPC64_DTPREL16_LO_DS: | |
| 11364 | case R_PPC64_DTPREL16_HIGHER: | |
| 11365 | case R_PPC64_DTPREL16_HIGHERA: | |
| 11366 | case R_PPC64_DTPREL16_HIGHEST: | |
| 11367 | case R_PPC64_DTPREL16_HIGHESTA: | |
| e1918d23 | 11368 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
11369 | break; |
| 11370 | ||
| e515b051 AM |
11371 | case R_PPC64_DTPMOD64: |
| 11372 | relocation = 1; | |
| 11373 | addend = 0; | |
| 11374 | goto dodyn; | |
| 11375 | ||
| 411e1bfb | 11376 | case R_PPC64_TPREL64: |
| e1918d23 | 11377 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; |
| 411e1bfb AM |
11378 | goto dodyn; |
| 11379 | ||
| 11380 | case R_PPC64_DTPREL64: | |
| e1918d23 | 11381 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; |
| 411e1bfb AM |
11382 | /* Fall thru */ |
| 11383 | ||
| 65f38f15 AM |
11384 | /* Relocations that may need to be propagated if this is a |
| 11385 | dynamic object. */ | |
| 04c9666a | 11386 | case R_PPC64_REL30: |
| 65f38f15 AM |
11387 | case R_PPC64_REL32: |
| 11388 | case R_PPC64_REL64: | |
| 11389 | case R_PPC64_ADDR14: | |
| 11390 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 11391 | case R_PPC64_ADDR14_BRTAKEN: | |
| 11392 | case R_PPC64_ADDR16: | |
| 11393 | case R_PPC64_ADDR16_DS: | |
| 11394 | case R_PPC64_ADDR16_HA: | |
| 11395 | case R_PPC64_ADDR16_HI: | |
| 11396 | case R_PPC64_ADDR16_HIGHER: | |
| 11397 | case R_PPC64_ADDR16_HIGHERA: | |
| 11398 | case R_PPC64_ADDR16_HIGHEST: | |
| 11399 | case R_PPC64_ADDR16_HIGHESTA: | |
| 11400 | case R_PPC64_ADDR16_LO: | |
| 11401 | case R_PPC64_ADDR16_LO_DS: | |
| 11402 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
11403 | case R_PPC64_ADDR32: |
| 11404 | case R_PPC64_ADDR64: | |
| 11405 | case R_PPC64_UADDR16: | |
| 11406 | case R_PPC64_UADDR32: | |
| 11407 | case R_PPC64_UADDR64: | |
| 411e1bfb | 11408 | dodyn: |
| 5d1634d7 | 11409 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
11410 | break; |
| 11411 | ||
| 41bd81ab AM |
11412 | if (NO_OPD_RELOCS && is_opd) |
| 11413 | break; | |
| 11414 | ||
| 65f38f15 | 11415 | if ((info->shared |
| 4e795f50 | 11416 | && (h == NULL |
| 039b3fef AM |
11417 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 11418 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 11419 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 11420 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 AM |
11421 | || (ELIMINATE_COPY_RELOCS |
| 11422 | && !info->shared | |
| 65f38f15 | 11423 | && h != NULL |
| 039b3fef | 11424 | && h->elf.dynindx != -1 |
| f5385ebf | 11425 | && !h->elf.non_got_ref |
| f5385ebf | 11426 | && !h->elf.def_regular)) |
| 65f38f15 AM |
11427 | { |
| 11428 | Elf_Internal_Rela outrel; | |
| b34976b6 | 11429 | bfd_boolean skip, relocate; |
| 65f38f15 | 11430 | asection *sreloc; |
| 947216bf | 11431 | bfd_byte *loc; |
| 1cf1f670 | 11432 | bfd_vma out_off; |
| 65f38f15 AM |
11433 | |
| 11434 | /* When generating a dynamic object, these relocations | |
| 11435 | are copied into the output file to be resolved at run | |
| 11436 | time. */ | |
| 11437 | ||
| b34976b6 AM |
11438 | skip = FALSE; |
| 11439 | relocate = FALSE; | |
| 65f38f15 | 11440 | |
| 1cf1f670 AM |
11441 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 11442 | input_section, rel->r_offset); | |
| 11443 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 11444 | skip = TRUE; |
| 1cf1f670 | 11445 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 11446 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
11447 | out_off += (input_section->output_section->vma |
| 11448 | + input_section->output_offset); | |
| 11449 | outrel.r_offset = out_off; | |
| 411e1bfb | 11450 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 11451 | |
| 1cf1f670 AM |
11452 | /* Optimize unaligned reloc use. */ |
| 11453 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 11454 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 11455 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 11456 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 11457 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 11458 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 11459 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 11460 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 11461 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 11462 | ||
| 65f38f15 | 11463 | if (skip) |
| 0bb2d96a | 11464 | memset (&outrel, 0, sizeof outrel); |
| 039b3fef | 11465 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
| 0b13192e AM |
11466 | && !is_opd |
| 11467 | && r_type != R_PPC64_TOC) | |
| 039b3fef | 11468 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); |
| 65f38f15 AM |
11469 | else |
| 11470 | { | |
| 41bd81ab AM |
11471 | /* This symbol is local, or marked to become local, |
| 11472 | or this is an opd section reloc which must point | |
| 11473 | at a local function. */ | |
| 65f38f15 | 11474 | outrel.r_addend += relocation; |
| e86ce104 | 11475 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 11476 | { |
| 3fad3c7c | 11477 | if (is_opd && h != NULL) |
| afbe61cf AM |
11478 | { |
| 11479 | /* Lie about opd entries. This case occurs | |
| 11480 | when building shared libraries and we | |
| 11481 | reference a function in another shared | |
| 3fad3c7c AM |
11482 | lib. The same thing happens for a weak |
| 11483 | definition in an application that's | |
| 11484 | overridden by a strong definition in a | |
| 11485 | shared lib. (I believe this is a generic | |
| 11486 | bug in binutils handling of weak syms.) | |
| 11487 | In these cases we won't use the opd | |
| 1e2f5b6e | 11488 | entry in this lib. */ |
| b34976b6 | 11489 | unresolved_reloc = FALSE; |
| afbe61cf | 11490 | } |
| 65f38f15 | 11491 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); |
| 81407a69 AM |
11492 | |
| 11493 | /* We need to relocate .opd contents for ld.so. | |
| 11494 | Prelink also wants simple and consistent rules | |
| 11495 | for relocs. This make all RELATIVE relocs have | |
| 11496 | *r_offset equal to r_addend. */ | |
| 11497 | relocate = TRUE; | |
| 65f38f15 AM |
11498 | } |
| 11499 | else | |
| 11500 | { | |
| 11501 | long indx = 0; | |
| 11502 | ||
| 1d483afe | 11503 | if (r_symndx == 0 || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
11504 | ; |
| 11505 | else if (sec == NULL || sec->owner == NULL) | |
| 11506 | { | |
| 11507 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 11508 | return FALSE; |
| 65f38f15 AM |
11509 | } |
| 11510 | else | |
| 11511 | { | |
| 11512 | asection *osec; | |
| 11513 | ||
| 11514 | osec = sec->output_section; | |
| 11515 | indx = elf_section_data (osec)->dynindx; | |
| 11516 | ||
| 74541ad4 AM |
11517 | if (indx == 0) |
| 11518 | { | |
| 11519 | if ((osec->flags & SEC_READONLY) == 0 | |
| 11520 | && htab->elf.data_index_section != NULL) | |
| 11521 | osec = htab->elf.data_index_section; | |
| 11522 | else | |
| 11523 | osec = htab->elf.text_index_section; | |
| 11524 | indx = elf_section_data (osec)->dynindx; | |
| 11525 | } | |
| 11526 | BFD_ASSERT (indx != 0); | |
| 11527 | ||
| 65f38f15 AM |
11528 | /* We are turning this relocation into one |
| 11529 | against a section symbol, so subtract out | |
| 11530 | the output section's address but not the | |
| 11531 | offset of the input section in the output | |
| 11532 | section. */ | |
| 11533 | outrel.r_addend -= osec->vma; | |
| 11534 | } | |
| 11535 | ||
| 11536 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 11537 | } | |
| 11538 | } | |
| 11539 | ||
| 11540 | sreloc = elf_section_data (input_section)->sreloc; | |
| 11541 | if (sreloc == NULL) | |
| 11542 | abort (); | |
| 11543 | ||
| dfbb6ac9 AM |
11544 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 11545 | >= sreloc->size) | |
| 11546 | abort (); | |
| 947216bf AM |
11547 | loc = sreloc->contents; |
| 11548 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
11549 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 11550 | ||
| 11551 | /* If this reloc is against an external symbol, it will | |
| 11552 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
11553 | anything now. However, for the sake of prelink ensure |
| 11554 | that the section contents are a known value. */ | |
| 65f38f15 | 11555 | if (! relocate) |
| 81407a69 AM |
11556 | { |
| 11557 | unresolved_reloc = FALSE; | |
| 11558 | /* The value chosen here is quite arbitrary as ld.so | |
| 11559 | ignores section contents except for the special | |
| 11560 | case of .opd where the contents might be accessed | |
| 11561 | before relocation. Choose zero, as that won't | |
| 11562 | cause reloc overflow. */ | |
| 11563 | relocation = 0; | |
| 11564 | addend = 0; | |
| 11565 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 11566 | to improve backward compatibility with older | |
| 11567 | versions of ld. */ | |
| 11568 | if (r_type == R_PPC64_ADDR64) | |
| 11569 | addend = outrel.r_addend; | |
| 11570 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 11571 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
11572 | addend = (input_section->output_section->vma |
| 11573 | + input_section->output_offset | |
| 11574 | + rel->r_offset); | |
| 81407a69 | 11575 | } |
| 65f38f15 | 11576 | } |
| 5bd4f169 AM |
11577 | break; |
| 11578 | ||
| 65f38f15 AM |
11579 | case R_PPC64_COPY: |
| 11580 | case R_PPC64_GLOB_DAT: | |
| 11581 | case R_PPC64_JMP_SLOT: | |
| 11582 | case R_PPC64_RELATIVE: | |
| 11583 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 11584 | files. */ | |
| ae9a127f | 11585 | /* Fall through. */ |
| 65f38f15 AM |
11586 | |
| 11587 | case R_PPC64_PLTGOT16: | |
| 11588 | case R_PPC64_PLTGOT16_DS: | |
| 11589 | case R_PPC64_PLTGOT16_HA: | |
| 11590 | case R_PPC64_PLTGOT16_HI: | |
| 11591 | case R_PPC64_PLTGOT16_LO: | |
| 11592 | case R_PPC64_PLTGOT16_LO_DS: | |
| 11593 | case R_PPC64_PLTREL32: | |
| 11594 | case R_PPC64_PLTREL64: | |
| 11595 | /* These ones haven't been implemented yet. */ | |
| 11596 | ||
| 11597 | (*_bfd_error_handler) | |
| d003868e AM |
11598 | (_("%B: relocation %s is not supported for symbol %s."), |
| 11599 | input_bfd, | |
| 4ce794b7 | 11600 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
11601 | |
| 11602 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 11603 | ret = FALSE; |
| 5bd4f169 | 11604 | continue; |
| 65f38f15 | 11605 | } |
| 5bd4f169 | 11606 | |
| 65f38f15 AM |
11607 | /* Do any further special processing. */ |
| 11608 | switch (r_type) | |
| 11609 | { | |
| 11610 | default: | |
| 11611 | break; | |
| 11612 | ||
| 11613 | case R_PPC64_ADDR16_HA: | |
| 11614 | case R_PPC64_ADDR16_HIGHERA: | |
| 11615 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
11616 | case R_PPC64_TOC16_HA: |
| 11617 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb AM |
11618 | case R_PPC64_TPREL16_HA: |
| 11619 | case R_PPC64_DTPREL16_HA: | |
| 411e1bfb AM |
11620 | case R_PPC64_TPREL16_HIGHER: |
| 11621 | case R_PPC64_TPREL16_HIGHERA: | |
| 11622 | case R_PPC64_TPREL16_HIGHEST: | |
| 11623 | case R_PPC64_TPREL16_HIGHESTA: | |
| 11624 | case R_PPC64_DTPREL16_HIGHER: | |
| 11625 | case R_PPC64_DTPREL16_HIGHERA: | |
| 11626 | case R_PPC64_DTPREL16_HIGHEST: | |
| 11627 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 65f38f15 AM |
11628 | /* It's just possible that this symbol is a weak symbol |
| 11629 | that's not actually defined anywhere. In that case, | |
| 11630 | 'sec' would be NULL, and we should leave the symbol | |
| 11631 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
11632 | if (sec == NULL) |
| 11633 | break; | |
| 11634 | /* Fall thru */ | |
| 11635 | ||
| 11636 | case R_PPC64_GOT16_HA: | |
| 11637 | case R_PPC64_PLTGOT16_HA: | |
| 11638 | case R_PPC64_PLT16_HA: | |
| 11639 | case R_PPC64_GOT_TLSGD16_HA: | |
| 11640 | case R_PPC64_GOT_TLSLD16_HA: | |
| 11641 | case R_PPC64_GOT_TPREL16_HA: | |
| 11642 | case R_PPC64_GOT_DTPREL16_HA: | |
| 11643 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 11644 | Bits 0:15 are not used. */ | |
| 11645 | addend += 0x8000; | |
| 65f38f15 AM |
11646 | break; |
| 11647 | ||
| 11648 | case R_PPC64_ADDR16_DS: | |
| 11649 | case R_PPC64_ADDR16_LO_DS: | |
| 11650 | case R_PPC64_GOT16_DS: | |
| 11651 | case R_PPC64_GOT16_LO_DS: | |
| 11652 | case R_PPC64_PLT16_LO_DS: | |
| 11653 | case R_PPC64_SECTOFF_DS: | |
| 11654 | case R_PPC64_SECTOFF_LO_DS: | |
| 11655 | case R_PPC64_TOC16_DS: | |
| 11656 | case R_PPC64_TOC16_LO_DS: | |
| 11657 | case R_PPC64_PLTGOT16_DS: | |
| 11658 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
11659 | case R_PPC64_GOT_TPREL16_DS: |
| 11660 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 11661 | case R_PPC64_GOT_DTPREL16_DS: | |
| 11662 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 11663 | case R_PPC64_TPREL16_DS: | |
| 11664 | case R_PPC64_TPREL16_LO_DS: | |
| 11665 | case R_PPC64_DTPREL16_DS: | |
| 11666 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
11667 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 11668 | mask = 3; | |
| 11669 | /* If this reloc is against an lq insn, then the value must be | |
| 11670 | a multiple of 16. This is somewhat of a hack, but the | |
| 11671 | "correct" way to do this by defining _DQ forms of all the | |
| 11672 | _DS relocs bloats all reloc switches in this file. It | |
| 11673 | doesn't seem to make much sense to use any of these relocs | |
| 11674 | in data, so testing the insn should be safe. */ | |
| 494dac0c | 11675 | if ((insn & (0x3f << 26)) == (56u << 26)) |
| adadcc0c AM |
11676 | mask = 15; |
| 11677 | if (((relocation + addend) & mask) != 0) | |
| 65f38f15 AM |
11678 | { |
| 11679 | (*_bfd_error_handler) | |
| d003868e AM |
11680 | (_("%B: error: relocation %s not a multiple of %d"), |
| 11681 | input_bfd, | |
| 4ce794b7 | 11682 | ppc64_elf_howto_table[r_type]->name, |
| adadcc0c | 11683 | mask + 1); |
| 65f38f15 | 11684 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 11685 | ret = FALSE; |
| 65f38f15 AM |
11686 | continue; |
| 11687 | } | |
| 11688 | break; | |
| 5bd4f169 AM |
11689 | } |
| 11690 | ||
| 239e1f3a AM |
11691 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 11692 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 11693 | not process them. */ | |
| 65f38f15 | 11694 | if (unresolved_reloc |
| 239e1f3a | 11695 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| f5385ebf | 11696 | && h->elf.def_dynamic)) |
| 9c07fe7c AM |
11697 | { |
| 11698 | (*_bfd_error_handler) | |
| d003868e AM |
11699 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 11700 | input_bfd, | |
| 11701 | input_section, | |
| 9c07fe7c | 11702 | (long) rel->r_offset, |
| 7b609f53 | 11703 | ppc64_elf_howto_table[(int) r_type]->name, |
| 039b3fef | 11704 | h->elf.root.root.string); |
| b34976b6 | 11705 | ret = FALSE; |
| 9c07fe7c | 11706 | } |
| 5bd4f169 | 11707 | |
| 65f38f15 | 11708 | r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type], |
| 5bd4f169 AM |
11709 | input_bfd, |
| 11710 | input_section, | |
| 11711 | contents, | |
| 411e1bfb | 11712 | rel->r_offset, |
| 5bd4f169 AM |
11713 | relocation, |
| 11714 | addend); | |
| 11715 | ||
| ef60b7ff | 11716 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 11717 | { |
| cd27b276 AM |
11718 | if (sym_name == NULL) |
| 11719 | sym_name = "(null)"; | |
| 11720 | if (r == bfd_reloc_overflow) | |
| 5bd4f169 | 11721 | { |
| cd27b276 AM |
11722 | if (warned) |
| 11723 | continue; | |
| 11724 | if (h != NULL | |
| 039b3fef | 11725 | && h->elf.root.type == bfd_link_hash_undefweak |
| 4ce794b7 | 11726 | && ppc64_elf_howto_table[r_type]->pc_relative) |
| 5bd4f169 AM |
11727 | { |
| 11728 | /* Assume this is a call protected by other code that | |
| 11729 | detects the symbol is undefined. If this is the case, | |
| 11730 | we can safely ignore the overflow. If not, the | |
| 11731 | program is hosed anyway, and a little warning isn't | |
| 11732 | going to help. */ | |
| 11733 | ||
| 11734 | continue; | |
| 11735 | } | |
| 11736 | ||
| ef60b7ff | 11737 | if (!((*info->callbacks->reloc_overflow) |
| dfeffb9f L |
11738 | (info, (h ? &h->elf.root : NULL), sym_name, |
| 11739 | ppc64_elf_howto_table[r_type]->name, | |
| 4cc603a5 | 11740 | orig_addend, input_bfd, input_section, rel->r_offset))) |
| b34976b6 | 11741 | return FALSE; |
| ef60b7ff AM |
11742 | } |
| 11743 | else | |
| 11744 | { | |
| 11745 | (*_bfd_error_handler) | |
| d003868e AM |
11746 | (_("%B(%A+0x%lx): %s reloc against `%s': error %d"), |
| 11747 | input_bfd, | |
| 11748 | input_section, | |
| 7b609f53 | 11749 | (long) rel->r_offset, |
| 4ce794b7 | 11750 | ppc64_elf_howto_table[r_type]->name, |
| 7b609f53 AM |
11751 | sym_name, |
| 11752 | (int) r); | |
| b34976b6 | 11753 | ret = FALSE; |
| ef60b7ff | 11754 | } |
| 5bd4f169 | 11755 | } |
| 5bd4f169 AM |
11756 | } |
| 11757 | ||
| 645ea6a9 AM |
11758 | /* If we're emitting relocations, then shortly after this function |
| 11759 | returns, reloc offsets and addends for this section will be | |
| 11760 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
11761 | file rather than the input. Save a copy of the relocs for |
| 11762 | opd_entry_value. */ | |
| 4cc603a5 | 11763 | if (is_opd && (info->emitrelocations || info->relocatable)) |
| 8860955f AM |
11764 | { |
| 11765 | bfd_size_type amt; | |
| 11766 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 11767 | rel = bfd_alloc (input_bfd, amt); | |
| 11768 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd_relocs == NULL); | |
| 11769 | ppc64_elf_tdata (input_bfd)->opd_relocs = rel; | |
| 11770 | if (rel == NULL) | |
| 11771 | return FALSE; | |
| 11772 | memcpy (rel, relocs, amt); | |
| 11773 | } | |
| 5bd4f169 AM |
11774 | return ret; |
| 11775 | } | |
| 11776 | ||
| 754021d0 AM |
11777 | /* Adjust the value of any local symbols in opd sections. */ |
| 11778 | ||
| 6e0b88f1 | 11779 | static int |
| 754021d0 AM |
11780 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 11781 | const char *name ATTRIBUTE_UNUSED, | |
| 11782 | Elf_Internal_Sym *elfsym, | |
| 11783 | asection *input_sec, | |
| 11784 | struct elf_link_hash_entry *h) | |
| 11785 | { | |
| 74f0fb50 AM |
11786 | struct _opd_sec_data *opd; |
| 11787 | long adjust; | |
| 754021d0 AM |
11788 | bfd_vma value; |
| 11789 | ||
| 4025353c | 11790 | if (h != NULL) |
| 6e0b88f1 | 11791 | return 1; |
| 4025353c | 11792 | |
| 74f0fb50 AM |
11793 | opd = get_opd_info (input_sec); |
| 11794 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 11795 | return 1; |
| 754021d0 AM |
11796 | |
| 11797 | value = elfsym->st_value - input_sec->output_offset; | |
| 11798 | if (!info->relocatable) | |
| 11799 | value -= input_sec->output_section->vma; | |
| 11800 | ||
| 74f0fb50 | 11801 | adjust = opd->adjust[value / 8]; |
| 4025353c | 11802 | if (adjust == -1) |
| 6e0b88f1 AM |
11803 | return 2; |
| 11804 | ||
| 11805 | elfsym->st_value += adjust; | |
| 11806 | return 1; | |
| 754021d0 AM |
11807 | } |
| 11808 | ||
| 5bd4f169 AM |
11809 | /* Finish up dynamic symbol handling. We set the contents of various |
| 11810 | dynamic sections here. */ | |
| 11811 | ||
| b34976b6 | 11812 | static bfd_boolean |
| 4ce794b7 AM |
11813 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 11814 | struct bfd_link_info *info, | |
| 11815 | struct elf_link_hash_entry *h, | |
| 11816 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 11817 | { |
| 65f38f15 | 11818 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
11819 | struct plt_entry *ent; |
| 11820 | Elf_Internal_Rela rela; | |
| 11821 | bfd_byte *loc; | |
| 5bd4f169 | 11822 | |
| 65f38f15 | 11823 | htab = ppc_hash_table (info); |
| 5bd4f169 | 11824 | |
| 8387904d AM |
11825 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 11826 | if (ent->plt.offset != (bfd_vma) -1) | |
| 11827 | { | |
| 11828 | /* This symbol has an entry in the procedure linkage | |
| 11829 | table. Set it up. */ | |
| 11830 | ||
| 11831 | if (htab->plt == NULL | |
| 11832 | || htab->relplt == NULL | |
| 11833 | || htab->glink == NULL) | |
| 11834 | abort (); | |
| 11835 | ||
| 11836 | /* Create a JMP_SLOT reloc to inform the dynamic linker to | |
| 11837 | fill in the PLT entry. */ | |
| 11838 | rela.r_offset = (htab->plt->output_section->vma | |
| 11839 | + htab->plt->output_offset | |
| 11840 | + ent->plt.offset); | |
| 11841 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); | |
| 11842 | rela.r_addend = ent->addend; | |
| 11843 | ||
| 11844 | loc = htab->relplt->contents; | |
| 11845 | loc += ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE | |
| 11846 | * sizeof (Elf64_External_Rela)); | |
| 11847 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); | |
| 11848 | } | |
| 5bd4f169 | 11849 | |
| f5385ebf | 11850 | if (h->needs_copy) |
| 5bd4f169 | 11851 | { |
| 5bd4f169 | 11852 | Elf_Internal_Rela rela; |
| 947216bf | 11853 | bfd_byte *loc; |
| 5bd4f169 | 11854 | |
| 65f38f15 | 11855 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 11856 | |
| 65f38f15 AM |
11857 | if (h->dynindx == -1 |
| 11858 | || (h->root.type != bfd_link_hash_defined | |
| 11859 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 11860 | || htab->relbss == NULL) |
| 65f38f15 | 11861 | abort (); |
| 5bd4f169 AM |
11862 | |
| 11863 | rela.r_offset = (h->root.u.def.value | |
| 11864 | + h->root.u.def.section->output_section->vma | |
| 11865 | + h->root.u.def.section->output_offset); | |
| 11866 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 11867 | rela.r_addend = 0; | |
| 4ce794b7 AM |
11868 | loc = htab->relbss->contents; |
| 11869 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 11870 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
11871 | } |
| 11872 | ||
| 5bd4f169 AM |
11873 | /* Mark some specially defined symbols as absolute. */ |
| 11874 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0) | |
| 11875 | sym->st_shndx = SHN_ABS; | |
| 11876 | ||
| b34976b6 | 11877 | return TRUE; |
| 5bd4f169 AM |
11878 | } |
| 11879 | ||
| 65f38f15 AM |
11880 | /* Used to decide how to sort relocs in an optimal manner for the |
| 11881 | dynamic linker, before writing them out. */ | |
| 11882 | ||
| 11883 | static enum elf_reloc_type_class | |
| 4ce794b7 | 11884 | ppc64_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
| 65f38f15 | 11885 | { |
| 04c9666a | 11886 | enum elf_ppc64_reloc_type r_type; |
| a33d1f77 | 11887 | |
| 4ce794b7 | 11888 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 11889 | switch (r_type) |
| 65f38f15 AM |
11890 | { |
| 11891 | case R_PPC64_RELATIVE: | |
| 11892 | return reloc_class_relative; | |
| 11893 | case R_PPC64_JMP_SLOT: | |
| 11894 | return reloc_class_plt; | |
| 11895 | case R_PPC64_COPY: | |
| 11896 | return reloc_class_copy; | |
| 11897 | default: | |
| 11898 | return reloc_class_normal; | |
| 11899 | } | |
| 11900 | } | |
| 11901 | ||
| 5bd4f169 AM |
11902 | /* Finish up the dynamic sections. */ |
| 11903 | ||
| b34976b6 | 11904 | static bfd_boolean |
| 4ce794b7 AM |
11905 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 11906 | struct bfd_link_info *info) | |
| 5bd4f169 | 11907 | { |
| 65f38f15 AM |
11908 | struct ppc_link_hash_table *htab; |
| 11909 | bfd *dynobj; | |
| 5bd4f169 | 11910 | asection *sdyn; |
| 5bd4f169 | 11911 | |
| 65f38f15 AM |
11912 | htab = ppc_hash_table (info); |
| 11913 | dynobj = htab->elf.dynobj; | |
| 5bd4f169 AM |
11914 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 11915 | ||
| 65f38f15 | 11916 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 11917 | { |
| 5bd4f169 AM |
11918 | Elf64_External_Dyn *dyncon, *dynconend; |
| 11919 | ||
| 4ce794b7 | 11920 | if (sdyn == NULL || htab->got == NULL) |
| 65f38f15 | 11921 | abort (); |
| 5bd4f169 AM |
11922 | |
| 11923 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 11924 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
11925 | for (; dyncon < dynconend; dyncon++) |
| 11926 | { | |
| 11927 | Elf_Internal_Dyn dyn; | |
| 19397422 | 11928 | asection *s; |
| 5bd4f169 AM |
11929 | |
| 11930 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 11931 | ||
| 11932 | switch (dyn.d_tag) | |
| 11933 | { | |
| 65f38f15 AM |
11934 | default: |
| 11935 | continue; | |
| 5bd4f169 | 11936 | |
| 5d1634d7 | 11937 | case DT_PPC64_GLINK: |
| 4ce794b7 | 11938 | s = htab->glink; |
| 6348e046 | 11939 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
11940 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 11941 | of glink rather than the first entry point, which is | |
| 11942 | what ld.so needs, and now have a bigger stub to | |
| 11943 | support automatic multiple TOCs. */ | |
| 11944 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 32; | |
| 5d1634d7 AM |
11945 | break; |
| 11946 | ||
| 19397422 AM |
11947 | case DT_PPC64_OPD: |
| 11948 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
11949 | if (s == NULL) |
| 11950 | continue; | |
| 11951 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
11952 | break; |
| 11953 | ||
| 11954 | case DT_PPC64_OPDSZ: | |
| 11955 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
11956 | if (s == NULL) |
| 11957 | continue; | |
| eea6121a | 11958 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
11959 | break; |
| 11960 | ||
| 65f38f15 | 11961 | case DT_PLTGOT: |
| 4ce794b7 | 11962 | s = htab->plt; |
| 6348e046 | 11963 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
11964 | break; |
| 11965 | ||
| 11966 | case DT_JMPREL: | |
| 4ce794b7 | 11967 | s = htab->relplt; |
| 6348e046 | 11968 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 11969 | break; |
| 5bd4f169 | 11970 | |
| 65f38f15 | 11971 | case DT_PLTRELSZ: |
| eea6121a | 11972 | dyn.d_un.d_val = htab->relplt->size; |
| 5d1634d7 AM |
11973 | break; |
| 11974 | ||
| 11975 | case DT_RELASZ: | |
| 11976 | /* Don't count procedure linkage table relocs in the | |
| 11977 | overall reloc count. */ | |
| 4ce794b7 | 11978 | s = htab->relplt; |
| 6348e046 AM |
11979 | if (s == NULL) |
| 11980 | continue; | |
| eea6121a | 11981 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
11982 | break; |
| 11983 | ||
| 11984 | case DT_RELA: | |
| 11985 | /* We may not be using the standard ELF linker script. | |
| 11986 | If .rela.plt is the first .rela section, we adjust | |
| 11987 | DT_RELA to not include it. */ | |
| 4ce794b7 | 11988 | s = htab->relplt; |
| 6348e046 AM |
11989 | if (s == NULL) |
| 11990 | continue; | |
| 11991 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 11992 | continue; | |
| eea6121a | 11993 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 11994 | break; |
| 5bd4f169 | 11995 | } |
| 5bd4f169 | 11996 | |
| 65f38f15 | 11997 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 11998 | } |
| 5bd4f169 AM |
11999 | } |
| 12000 | ||
| eea6121a | 12001 | if (htab->got != NULL && htab->got->size != 0) |
| 5d1634d7 AM |
12002 | { |
| 12003 | /* Fill in the first entry in the global offset table. | |
| 12004 | We use it to hold the link-time TOCbase. */ | |
| 12005 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 12006 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 4ce794b7 | 12007 | htab->got->contents); |
| 5d1634d7 AM |
12008 | |
| 12009 | /* Set .got entry size. */ | |
| 4ce794b7 | 12010 | elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
12011 | } |
| 12012 | ||
| eea6121a | 12013 | if (htab->plt != NULL && htab->plt->size != 0) |
| 5d1634d7 AM |
12014 | { |
| 12015 | /* Set .plt entry size. */ | |
| 4ce794b7 | 12016 | elf_section_data (htab->plt->output_section)->this_hdr.sh_entsize |
| 5d1634d7 AM |
12017 | = PLT_ENTRY_SIZE; |
| 12018 | } | |
| 12019 | ||
| 84f5d08e AM |
12020 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 12021 | brlt ourselves if emitrelocations. */ | |
| 12022 | if (htab->brlt != NULL | |
| 12023 | && htab->brlt->reloc_count != 0 | |
| 12024 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 12025 | htab->brlt, | |
| 12026 | &elf_section_data (htab->brlt)->rel_hdr, | |
| 12027 | elf_section_data (htab->brlt)->relocs, | |
| 12028 | NULL)) | |
| 12029 | return FALSE; | |
| 12030 | ||
| 176a0d42 AM |
12031 | if (htab->glink != NULL |
| 12032 | && htab->glink->reloc_count != 0 | |
| 12033 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 12034 | htab->glink, | |
| 12035 | &elf_section_data (htab->glink)->rel_hdr, | |
| 12036 | elf_section_data (htab->glink)->relocs, | |
| 12037 | NULL)) | |
| 12038 | return FALSE; | |
| 12039 | ||
| e717da7e | 12040 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
12041 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 12042 | bfd. */ | |
| e717da7e AM |
12043 | while ((dynobj = dynobj->link_next) != NULL) |
| 12044 | { | |
| 12045 | asection *s; | |
| 7b53ace3 | 12046 | |
| 0c8d6e5c | 12047 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
12048 | continue; |
| 12049 | ||
| e717da7e AM |
12050 | s = ppc64_elf_tdata (dynobj)->got; |
| 12051 | if (s != NULL | |
| eea6121a | 12052 | && s->size != 0 |
| e717da7e AM |
12053 | && s->output_section != bfd_abs_section_ptr |
| 12054 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 12055 | s->contents, s->output_offset, | |
| eea6121a | 12056 | s->size)) |
| e717da7e AM |
12057 | return FALSE; |
| 12058 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 12059 | if (s != NULL | |
| eea6121a | 12060 | && s->size != 0 |
| e717da7e AM |
12061 | && s->output_section != bfd_abs_section_ptr |
| 12062 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 12063 | s->contents, s->output_offset, | |
| eea6121a | 12064 | s->size)) |
| e717da7e AM |
12065 | return FALSE; |
| 12066 | } | |
| f6c52c13 | 12067 | |
| b34976b6 | 12068 | return TRUE; |
| 5bd4f169 AM |
12069 | } |
| 12070 | ||
| 5bd4f169 | 12071 | #include "elf64-target.h" |