projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 2571583a | 2 | Copyright (C) 1999-2017 Free Software Foundation, Inc. |
| 5bd4f169 AM |
3 | Written by Linus Nordberg, Swox AB <info@swox.com>, |
| 4 | based on elf32-ppc.c by Ian Lance Taylor. | |
| 32ca9640 | 5 | Largely rewritten by Alan Modra. |
| 5bd4f169 | 6 | |
| ae9a127f | 7 | This file is part of BFD, the Binary File Descriptor library. |
| 5bd4f169 | 8 | |
| ae9a127f NC |
9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by | |
| cd123cb7 | 11 | the Free Software Foundation; either version 3 of the License, or |
| ae9a127f | 12 | (at your option) any later version. |
| 5bd4f169 | 13 | |
| ae9a127f NC |
14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 17 | GNU General Public License for more details. | |
| 5bd4f169 | 18 | |
| 4ce794b7 AM |
19 | You should have received a copy of the GNU General Public License along |
| 20 | with this program; if not, write to the Free Software Foundation, Inc., | |
| 3e110533 | 21 | 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ |
| 5bd4f169 | 22 | |
| cd123cb7 | 23 | |
| 4ce794b7 AM |
24 | /* The 64-bit PowerPC ELF ABI may be found at |
| 25 | http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and | |
| 26 | http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */ | |
| 5bd4f169 | 27 | |
| 3db64b00 | 28 | #include "sysdep.h" |
| 183e98be | 29 | #include <stdarg.h> |
| 5bd4f169 | 30 | #include "bfd.h" |
| 5bd4f169 AM |
31 | #include "bfdlink.h" |
| 32 | #include "libbfd.h" | |
| 33 | #include "elf-bfd.h" | |
| 04c9666a | 34 | #include "elf/ppc64.h" |
| 5d1634d7 | 35 | #include "elf64-ppc.h" |
| 58d180e8 | 36 | #include "dwarf2.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 | 56 | static bfd_vma opd_entry_value |
| aef36ac1 | 57 | (asection *, bfd_vma, asection **, bfd_vma *, bfd_boolean); |
| 5bd4f169 | 58 | |
| 6d00b590 | 59 | #define TARGET_LITTLE_SYM powerpc_elf64_le_vec |
| ad8e1ba5 | 60 | #define TARGET_LITTLE_NAME "elf64-powerpcle" |
| 6d00b590 | 61 | #define TARGET_BIG_SYM powerpc_elf64_vec |
| ad8e1ba5 AM |
62 | #define TARGET_BIG_NAME "elf64-powerpc" |
| 63 | #define ELF_ARCH bfd_arch_powerpc | |
| ae95ffa6 | 64 | #define ELF_TARGET_ID PPC64_ELF_DATA |
| ad8e1ba5 AM |
65 | #define ELF_MACHINE_CODE EM_PPC64 |
| 66 | #define ELF_MAXPAGESIZE 0x10000 | |
| 04c6a44c | 67 | #define ELF_COMMONPAGESIZE 0x10000 |
| ad8e1ba5 AM |
68 | #define elf_info_to_howto ppc64_elf_info_to_howto |
| 69 | ||
| 70 | #define elf_backend_want_got_sym 0 | |
| 71 | #define elf_backend_want_plt_sym 0 | |
| 72 | #define elf_backend_plt_alignment 3 | |
| 73 | #define elf_backend_plt_not_loaded 1 | |
| ad8e1ba5 | 74 | #define elf_backend_got_header_size 8 |
| 5474d94f | 75 | #define elf_backend_want_dynrelro 1 |
| ad8e1ba5 AM |
76 | #define elf_backend_can_gc_sections 1 |
| 77 | #define elf_backend_can_refcount 1 | |
| 78 | #define elf_backend_rela_normal 1 | |
| 64f52338 | 79 | #define elf_backend_dtrel_excludes_plt 1 |
| 6bfdb61b | 80 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 81 | |
| e717da7e | 82 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 83 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| aa374f67 | 84 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ee67d69a AM |
85 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 86 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
| ad8e1ba5 AM |
87 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
| 88 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 90e3cdf2 | 89 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| aa374f67 | 90 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
| 8c5b4e52 | 91 | #define bfd_elf64_bfd_gc_sections ppc64_elf_gc_sections |
| ad8e1ba5 AM |
92 | |
| 93 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
94 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 95 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 96 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| 9d19e4fd | 97 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
| ad8e1ba5 | 98 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol |
| 555cd476 | 99 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| f6c7c3e8 | 100 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
| e5034e59 | 101 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
| 8387904d | 102 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 103 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 104 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 105 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
106 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 107 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 108 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 109 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 9f296da3 | 110 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
| ad8e1ba5 AM |
111 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
| 112 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| a345bc8d | 113 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
| 74541ad4 | 114 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 115 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
116 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 117 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 118 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 119 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 120 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 121 | #define elf_backend_special_sections ppc64_elf_special_sections |
| 6911b7dc | 122 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
| 8c5b4e52 | 123 | #define elf_backend_merge_symbol ppc64_elf_merge_symbol |
| bce964aa | 124 | #define elf_backend_get_reloc_section bfd_get_section_by_name |
| ad8e1ba5 | 125 | |
| 5bd4f169 AM |
126 | /* The name of the dynamic interpreter. This is put in the .interp |
| 127 | section. */ | |
| 128 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 129 | ||
| 130 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| b9e5796b | 131 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
| 5bd4f169 AM |
132 | |
| 133 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| b9e5796b | 134 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
| 5bd4f169 | 135 | |
| a078d95a AM |
136 | /* Offsets to some stack save slots. */ |
| 137 | #define STK_LR 16 | |
| 138 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
| eb8d7fda | 139 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
| a078d95a AM |
140 | CR save slot. Used only by optimised __tls_get_addr call stub, |
| 141 | relying on __tls_get_addr_opt not saving CR.. */ | |
| 142 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
| 143 | ||
| 5bd4f169 | 144 | /* TOC base pointers offset from start of TOC. */ |
| 411e1bfb | 145 | #define TOC_BASE_OFF 0x8000 |
| a27e685f AM |
146 | /* TOC base alignment. */ |
| 147 | #define TOC_BASE_ALIGN 256 | |
| 411e1bfb AM |
148 | |
| 149 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 150 | #define TP_OFFSET 0x7000 | |
| 151 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 152 | |
| ad8e1ba5 AM |
153 | /* .plt call stub instructions. The normal stub is like this, but |
| 154 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| 71a39c98 | 155 | insert an addi to adjust r11. */ |
| a078d95a | 156 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
| 71a39c98 AM |
157 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
| 158 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
| 159 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
| 160 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
| 161 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
| 5d1634d7 AM |
162 | #define BCTR 0x4e800420 /* bctr */ |
| 163 | ||
| 71a39c98 | 164 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
| ad8e1ba5 AM |
165 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 166 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 167 | ||
| 71a39c98 AM |
168 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
| 169 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
| 170 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
| 794e51c0 AM |
171 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
| 172 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
| 173 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
| 174 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
| 175 | ||
| 71a39c98 | 176 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
| ac2df442 AM |
177 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 178 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 179 | ||
| a078d95a | 180 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
| 006589cf AM |
181 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ |
| 182 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
| ad8e1ba5 | 183 | |
| 006589cf AM |
184 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
| 185 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ | |
| 186 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
| a345bc8d AM |
187 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
| 188 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
| 189 | ||
| ee4bf8d2 | 190 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 191 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
192 | /* 0: */ |
| 193 | /* .quad plt0-1f */ | |
| 194 | /* __glink: */ | |
| 195 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 196 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 197 | /* 1: */ | |
| 198 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 71a39c98 | 199 | /* ld %2,(0b-1b)(%11) */ |
| ee4bf8d2 | 200 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
| 71a39c98 AM |
201 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
| 202 | /* ld %12,0(%11) */ | |
| 203 | /* ld %2,8(%11) */ | |
| 204 | /* mtctr %12 */ | |
| 205 | /* ld %11,16(%11) */ | |
| ee4bf8d2 | 206 | /* bctr */ |
| b9e5796b AM |
207 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
| 208 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 209 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
| 210 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
| 211 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
| 5d1634d7 AM |
212 | |
| 213 | /* Pad with this. */ | |
| 214 | #define NOP 0x60000000 | |
| 215 | ||
| 721956f4 AM |
216 | /* Some other nops. */ |
| 217 | #define CROR_151515 0x4def7b82 | |
| 218 | #define CROR_313131 0x4ffffb82 | |
| 219 | ||
| cedb70c5 | 220 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
221 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 222 | #define B_DOT 0x48000000 /* b . */ | |
| 223 | ||
| 224 | /* After that, we need two instructions to load the index, followed by | |
| 225 | a branch. */ | |
| 226 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 227 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 228 | |
| deb0e272 AM |
229 | /* Instructions used by the save and restore reg functions. */ |
| 230 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 231 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 232 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 233 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
234 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 235 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
236 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 237 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 238 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 239 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
240 | #define BLR 0x4e800020 /* blr */ |
| 241 | ||
| 41bd81ab AM |
242 | /* Since .opd is an array of descriptors and each entry will end up |
| 243 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 244 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 245 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
246 | #ifndef NO_OPD_RELOCS |
| 247 | #define NO_OPD_RELOCS 0 | |
| 248 | #endif | |
| 810d4e75 | 249 | |
| a4b6fadd AM |
250 | #ifndef ARRAY_SIZE |
| 251 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
| 252 | #endif | |
| 253 | ||
| 810d4e75 AM |
254 | static inline int |
| 255 | abiversion (bfd *abfd) | |
| 256 | { | |
| 257 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
| 258 | } | |
| 259 | ||
| 260 | static inline void | |
| 261 | set_abiversion (bfd *abfd, int ver) | |
| 262 | { | |
| 263 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
| 264 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
| 265 | } | |
| 5bd4f169 | 266 | \f |
| f5e87a1d | 267 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 268 | |
| 5bd4f169 | 269 | /* Relocation HOWTO's. */ |
| 04c9666a | 270 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
271 | |
| 272 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 273 | /* This reloc does nothing. */ | |
| 274 | HOWTO (R_PPC64_NONE, /* type */ | |
| 275 | 0, /* rightshift */ | |
| 6346d5ca AM |
276 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 277 | 0, /* bitsize */ | |
| b34976b6 | 278 | FALSE, /* pc_relative */ |
| 5bd4f169 | 279 | 0, /* bitpos */ |
| f5e87a1d | 280 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
281 | bfd_elf_generic_reloc, /* special_function */ |
| 282 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 283 | FALSE, /* partial_inplace */ |
| d006db6c | 284 | 0, /* src_mask */ |
| 5bd4f169 | 285 | 0, /* dst_mask */ |
| b34976b6 | 286 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
287 | |
| 288 | /* A standard 32 bit relocation. */ | |
| 289 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 290 | 0, /* rightshift */ | |
| 291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 292 | 32, /* bitsize */ | |
| b34976b6 | 293 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
294 | 0, /* bitpos */ |
| 295 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 296 | bfd_elf_generic_reloc, /* special_function */ | |
| 297 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 298 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
299 | 0, /* src_mask */ |
| 300 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 301 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
302 | |
| 303 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 304 | FIXME: we don't check that, we just clear them. */ | |
| 305 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 306 | 0, /* rightshift */ | |
| 307 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 308 | 26, /* bitsize */ | |
| b34976b6 | 309 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
310 | 0, /* bitpos */ |
| 311 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 312 | bfd_elf_generic_reloc, /* special_function */ | |
| 313 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 314 | FALSE, /* partial_inplace */ |
| d006db6c | 315 | 0, /* src_mask */ |
| f5e87a1d | 316 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 317 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
318 | |
| 319 | /* A standard 16 bit relocation. */ | |
| 320 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 321 | 0, /* rightshift */ | |
| 322 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 323 | 16, /* bitsize */ | |
| b34976b6 | 324 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
325 | 0, /* bitpos */ |
| 326 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 327 | bfd_elf_generic_reloc, /* special_function */ | |
| 328 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 329 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
330 | 0, /* src_mask */ |
| 331 | 0xffff, /* dst_mask */ | |
| b34976b6 | 332 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
333 | |
| 334 | /* A 16 bit relocation without overflow. */ | |
| 335 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 336 | 0, /* rightshift */ | |
| 337 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 338 | 16, /* bitsize */ | |
| b34976b6 | 339 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
340 | 0, /* bitpos */ |
| 341 | complain_overflow_dont,/* complain_on_overflow */ | |
| 342 | bfd_elf_generic_reloc, /* special_function */ | |
| 343 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 344 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
345 | 0, /* src_mask */ |
| 346 | 0xffff, /* dst_mask */ | |
| b34976b6 | 347 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
348 | |
| 349 | /* Bits 16-31 of an address. */ | |
| 350 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 351 | 16, /* rightshift */ | |
| 352 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 353 | 16, /* bitsize */ | |
| b34976b6 | 354 | FALSE, /* pc_relative */ |
| 5bd4f169 | 355 | 0, /* bitpos */ |
| f9c6b907 | 356 | complain_overflow_signed, /* complain_on_overflow */ |
| 5bd4f169 AM |
357 | bfd_elf_generic_reloc, /* special_function */ |
| 358 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 359 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
360 | 0, /* src_mask */ |
| 361 | 0xffff, /* dst_mask */ | |
| b34976b6 | 362 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
363 | |
| 364 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 365 | bits, treated as a signed number, is negative. */ | |
| 366 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 367 | 16, /* rightshift */ | |
| 368 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 369 | 16, /* bitsize */ | |
| b34976b6 | 370 | FALSE, /* pc_relative */ |
| 5bd4f169 | 371 | 0, /* bitpos */ |
| f9c6b907 | 372 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 373 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 374 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 375 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
376 | 0, /* src_mask */ |
| 377 | 0xffff, /* dst_mask */ | |
| b34976b6 | 378 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
379 | |
| 380 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 381 | FIXME: we don't check that, we just clear them. */ | |
| 382 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 383 | 0, /* rightshift */ | |
| 384 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 385 | 16, /* bitsize */ | |
| b34976b6 | 386 | FALSE, /* pc_relative */ |
| 5bd4f169 | 387 | 0, /* bitpos */ |
| b80eed39 | 388 | complain_overflow_signed, /* complain_on_overflow */ |
| 2441e016 | 389 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 390 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 391 | FALSE, /* partial_inplace */ |
| d006db6c | 392 | 0, /* src_mask */ |
| f5e87a1d | 393 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 394 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
395 | |
| 396 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 397 | indicate that the branch is expected to be taken. The lower two | |
| 398 | bits must be zero. */ | |
| 399 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 400 | 0, /* rightshift */ | |
| 401 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 402 | 16, /* bitsize */ | |
| b34976b6 | 403 | FALSE, /* pc_relative */ |
| 5bd4f169 | 404 | 0, /* bitpos */ |
| b80eed39 | 405 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 406 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 407 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 408 | FALSE, /* partial_inplace */ |
| d006db6c | 409 | 0, /* src_mask */ |
| f5e87a1d | 410 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 411 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
412 | |
| 413 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 414 | indicate that the branch is not expected to be taken. The lower | |
| 415 | two bits must be zero. */ | |
| 416 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 417 | 0, /* rightshift */ | |
| 418 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 419 | 16, /* bitsize */ | |
| b34976b6 | 420 | FALSE, /* pc_relative */ |
| 5bd4f169 | 421 | 0, /* bitpos */ |
| b80eed39 | 422 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 423 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 424 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 425 | FALSE, /* partial_inplace */ |
| d006db6c | 426 | 0, /* src_mask */ |
| f5e87a1d | 427 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 428 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
429 | |
| 430 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 431 | HOWTO (R_PPC64_REL24, /* type */ | |
| 432 | 0, /* rightshift */ | |
| 433 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 434 | 26, /* bitsize */ | |
| b34976b6 | 435 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
436 | 0, /* bitpos */ |
| 437 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 438 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 439 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 440 | FALSE, /* partial_inplace */ |
| d006db6c | 441 | 0, /* src_mask */ |
| f5e87a1d | 442 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 443 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
444 | |
| 445 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 446 | HOWTO (R_PPC64_REL14, /* type */ | |
| 447 | 0, /* rightshift */ | |
| 448 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 449 | 16, /* bitsize */ | |
| b34976b6 | 450 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
451 | 0, /* bitpos */ |
| 452 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 453 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 454 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 455 | FALSE, /* partial_inplace */ |
| d006db6c | 456 | 0, /* src_mask */ |
| f5e87a1d | 457 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 458 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
459 | |
| 460 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 461 | the branch is expected to be taken. The lower two bits must be | |
| 462 | zero. */ | |
| 463 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 464 | 0, /* rightshift */ | |
| 465 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 466 | 16, /* bitsize */ | |
| b34976b6 | 467 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
468 | 0, /* bitpos */ |
| 469 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 470 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 471 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 472 | FALSE, /* partial_inplace */ |
| d006db6c | 473 | 0, /* src_mask */ |
| f5e87a1d | 474 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 475 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
476 | |
| 477 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 478 | the branch is not expected to be taken. The lower two bits must | |
| 479 | be zero. */ | |
| 480 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 481 | 0, /* rightshift */ | |
| 482 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 483 | 16, /* bitsize */ | |
| b34976b6 | 484 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
485 | 0, /* bitpos */ |
| 486 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 487 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 488 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 489 | FALSE, /* partial_inplace */ |
| d006db6c | 490 | 0, /* src_mask */ |
| f5e87a1d | 491 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 492 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
493 | |
| 494 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 495 | symbol. */ | |
| 496 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 497 | 0, /* rightshift */ | |
| 498 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 499 | 16, /* bitsize */ | |
| b34976b6 | 500 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
501 | 0, /* bitpos */ |
| 502 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 503 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 504 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 505 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
506 | 0, /* src_mask */ |
| 507 | 0xffff, /* dst_mask */ | |
| b34976b6 | 508 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
509 | |
| 510 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 511 | the symbol. */ | |
| 512 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 513 | 0, /* rightshift */ | |
| 514 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 515 | 16, /* bitsize */ | |
| b34976b6 | 516 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
517 | 0, /* bitpos */ |
| 518 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 519 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 520 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 521 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
522 | 0, /* src_mask */ |
| 523 | 0xffff, /* dst_mask */ | |
| b34976b6 | 524 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
525 | |
| 526 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 527 | the symbol. */ | |
| 528 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 529 | 16, /* rightshift */ | |
| 530 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 531 | 16, /* bitsize */ | |
| b34976b6 | 532 | FALSE, /* pc_relative */ |
| 5bd4f169 | 533 | 0, /* bitpos */ |
| f9c6b907 | 534 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 535 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 536 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 537 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
538 | 0, /* src_mask */ |
| 539 | 0xffff, /* dst_mask */ | |
| b34976b6 | 540 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
541 | |
| 542 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 543 | the symbol. */ | |
| 544 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 545 | 16, /* rightshift */ | |
| 546 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 547 | 16, /* bitsize */ | |
| b34976b6 | 548 | FALSE, /* pc_relative */ |
| 5bd4f169 | 549 | 0, /* bitpos */ |
| f9c6b907 | 550 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 551 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 552 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 553 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
554 | 0, /* src_mask */ |
| 555 | 0xffff, /* dst_mask */ | |
| b34976b6 | 556 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
557 | |
| 558 | /* This is used only by the dynamic linker. The symbol should exist | |
| 559 | both in the object being run and in some shared library. The | |
| 560 | dynamic linker copies the data addressed by the symbol from the | |
| 561 | shared library into the object, because the object being | |
| 562 | run has to have the data at some particular address. */ | |
| 563 | HOWTO (R_PPC64_COPY, /* type */ | |
| 564 | 0, /* rightshift */ | |
| f5e87a1d AM |
565 | 0, /* this one is variable size */ |
| 566 | 0, /* bitsize */ | |
| b34976b6 | 567 | FALSE, /* pc_relative */ |
| 5bd4f169 | 568 | 0, /* bitpos */ |
| f5e87a1d AM |
569 | complain_overflow_dont, /* complain_on_overflow */ |
| 570 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 571 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 572 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
573 | 0, /* src_mask */ |
| 574 | 0, /* dst_mask */ | |
| b34976b6 | 575 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
576 | |
| 577 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 578 | entries. */ | |
| 579 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 580 | 0, /* rightshift */ | |
| 581 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 582 | 64, /* bitsize */ | |
| b34976b6 | 583 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
584 | 0, /* bitpos */ |
| 585 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 586 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 587 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 588 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 589 | 0, /* src_mask */ |
| f5e87a1d | 590 | ONES (64), /* dst_mask */ |
| b34976b6 | 591 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
592 | |
| 593 | /* Created by the link editor. Marks a procedure linkage table | |
| 594 | entry for a symbol. */ | |
| 595 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 596 | 0, /* rightshift */ | |
| 597 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 598 | 0, /* bitsize */ | |
| b34976b6 | 599 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
600 | 0, /* bitpos */ |
| 601 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 602 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 603 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 604 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
605 | 0, /* src_mask */ |
| 606 | 0, /* dst_mask */ | |
| b34976b6 | 607 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
608 | |
| 609 | /* Used only by the dynamic linker. When the object is run, this | |
| 610 | doubleword64 is set to the load address of the object, plus the | |
| 611 | addend. */ | |
| 612 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 613 | 0, /* rightshift */ | |
| 614 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 615 | 64, /* bitsize */ | |
| b34976b6 | 616 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
617 | 0, /* bitpos */ |
| 618 | complain_overflow_dont, /* complain_on_overflow */ | |
| 619 | bfd_elf_generic_reloc, /* special_function */ | |
| 620 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 621 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 622 | 0, /* src_mask */ |
| f5e87a1d | 623 | ONES (64), /* dst_mask */ |
| b34976b6 | 624 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
625 | |
| 626 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 627 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 628 | 0, /* rightshift */ | |
| 629 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 630 | 32, /* bitsize */ | |
| b34976b6 | 631 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
632 | 0, /* bitpos */ |
| 633 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 634 | bfd_elf_generic_reloc, /* special_function */ | |
| 635 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 636 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
637 | 0, /* src_mask */ |
| 638 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 639 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
640 | |
| 641 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 642 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 643 | 0, /* rightshift */ | |
| 644 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 645 | 16, /* bitsize */ | |
| b34976b6 | 646 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
647 | 0, /* bitpos */ |
| 648 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 649 | bfd_elf_generic_reloc, /* special_function */ | |
| 650 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 651 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
652 | 0, /* src_mask */ |
| 653 | 0xffff, /* dst_mask */ | |
| b34976b6 | 654 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
655 | |
| 656 | /* 32-bit PC relative. */ | |
| 657 | HOWTO (R_PPC64_REL32, /* type */ | |
| 658 | 0, /* rightshift */ | |
| 659 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 660 | 32, /* bitsize */ | |
| b34976b6 | 661 | TRUE, /* pc_relative */ |
| 5bd4f169 | 662 | 0, /* bitpos */ |
| 5bd4f169 AM |
663 | complain_overflow_signed, /* complain_on_overflow */ |
| 664 | bfd_elf_generic_reloc, /* special_function */ | |
| 665 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 666 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
667 | 0, /* src_mask */ |
| 668 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 669 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 670 | |
| 10ed1bba | 671 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
672 | HOWTO (R_PPC64_PLT32, /* type */ |
| 673 | 0, /* rightshift */ | |
| 674 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 675 | 32, /* bitsize */ | |
| b34976b6 | 676 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
677 | 0, /* bitpos */ |
| 678 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 679 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 680 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 681 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 682 | 0, /* src_mask */ |
| f5e87a1d | 683 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 684 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
685 | |
| 686 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 687 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 688 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 689 | 0, /* rightshift */ | |
| 690 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 691 | 32, /* bitsize */ | |
| b34976b6 | 692 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
693 | 0, /* bitpos */ |
| 694 | complain_overflow_signed, /* complain_on_overflow */ | |
| 3ce51288 | 695 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 696 | "R_PPC64_PLTREL32", /* name */ |
| b34976b6 | 697 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 698 | 0, /* src_mask */ |
| f5e87a1d | 699 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 700 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
701 | |
| 702 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 703 | the symbol. */ | |
| 704 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 705 | 0, /* rightshift */ | |
| 706 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 707 | 16, /* bitsize */ | |
| b34976b6 | 708 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
709 | 0, /* bitpos */ |
| 710 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 711 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 712 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 713 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
714 | 0, /* src_mask */ |
| 715 | 0xffff, /* dst_mask */ | |
| b34976b6 | 716 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
717 | |
| 718 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 719 | the symbol. */ | |
| 720 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 721 | 16, /* rightshift */ | |
| 722 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 723 | 16, /* bitsize */ | |
| b34976b6 | 724 | FALSE, /* pc_relative */ |
| 5bd4f169 | 725 | 0, /* bitpos */ |
| f9c6b907 | 726 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 727 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 728 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 729 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
730 | 0, /* src_mask */ |
| 731 | 0xffff, /* dst_mask */ | |
| b34976b6 | 732 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
733 | |
| 734 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 735 | the symbol. */ | |
| 736 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 737 | 16, /* rightshift */ | |
| 738 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 739 | 16, /* bitsize */ | |
| b34976b6 | 740 | FALSE, /* pc_relative */ |
| 5bd4f169 | 741 | 0, /* bitpos */ |
| f9c6b907 | 742 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 743 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 744 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 745 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
746 | 0, /* src_mask */ |
| 747 | 0xffff, /* dst_mask */ | |
| b34976b6 | 748 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 749 | |
| c061c2d8 | 750 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
751 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 752 | 0, /* rightshift */ | |
| c061c2d8 AM |
753 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 754 | 16, /* bitsize */ | |
| b34976b6 | 755 | FALSE, /* pc_relative */ |
| 5bd4f169 | 756 | 0, /* bitpos */ |
| b80eed39 | 757 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 758 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 759 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 760 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 761 | 0, /* src_mask */ |
| c061c2d8 | 762 | 0xffff, /* dst_mask */ |
| b34976b6 | 763 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 764 | |
| c061c2d8 | 765 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
766 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 767 | 0, /* rightshift */ | |
| 768 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 769 | 16, /* bitsize */ | |
| b34976b6 | 770 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
771 | 0, /* bitpos */ |
| 772 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 773 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 774 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 775 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
776 | 0, /* src_mask */ |
| 777 | 0xffff, /* dst_mask */ | |
| b34976b6 | 778 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
779 | |
| 780 | /* 16-bit upper half section relative relocation. */ | |
| 781 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 782 | 16, /* rightshift */ | |
| 783 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 784 | 16, /* bitsize */ | |
| b34976b6 | 785 | FALSE, /* pc_relative */ |
| 5bd4f169 | 786 | 0, /* bitpos */ |
| f9c6b907 | 787 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 788 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 789 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 790 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
791 | 0, /* src_mask */ |
| 792 | 0xffff, /* dst_mask */ | |
| b34976b6 | 793 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
794 | |
| 795 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 796 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 797 | 16, /* rightshift */ | |
| 798 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 799 | 16, /* bitsize */ | |
| b34976b6 | 800 | FALSE, /* pc_relative */ |
| 5bd4f169 | 801 | 0, /* bitpos */ |
| f9c6b907 | 802 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 803 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 804 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 805 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
806 | 0, /* src_mask */ |
| 807 | 0xffff, /* dst_mask */ | |
| b34976b6 | 808 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 809 | |
| 04c9666a AM |
810 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 811 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
812 | 2, /* rightshift */ |
| 813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 814 | 30, /* bitsize */ | |
| b34976b6 | 815 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
816 | 0, /* bitpos */ |
| 817 | complain_overflow_dont, /* complain_on_overflow */ | |
| 818 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 819 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 820 | FALSE, /* partial_inplace */ |
| d006db6c | 821 | 0, /* src_mask */ |
| 5bd4f169 | 822 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 823 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
824 | |
| 825 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 826 | ||
| 827 | /* A standard 64-bit relocation. */ | |
| 828 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 829 | 0, /* rightshift */ | |
| 830 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 831 | 64, /* bitsize */ | |
| b34976b6 | 832 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
833 | 0, /* bitpos */ |
| 834 | complain_overflow_dont, /* complain_on_overflow */ | |
| 835 | bfd_elf_generic_reloc, /* special_function */ | |
| 836 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 837 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 838 | 0, /* src_mask */ |
| f5e87a1d | 839 | ONES (64), /* dst_mask */ |
| b34976b6 | 840 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
841 | |
| 842 | /* The bits 32-47 of an address. */ | |
| 843 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 844 | 32, /* rightshift */ | |
| 845 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 846 | 16, /* bitsize */ | |
| b34976b6 | 847 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
848 | 0, /* bitpos */ |
| 849 | complain_overflow_dont, /* complain_on_overflow */ | |
| 850 | bfd_elf_generic_reloc, /* special_function */ | |
| 851 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 852 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
853 | 0, /* src_mask */ |
| 854 | 0xffff, /* dst_mask */ | |
| b34976b6 | 855 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
856 | |
| 857 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 858 | 16 bits, treated as a signed number, is negative. */ | |
| 859 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 860 | 32, /* rightshift */ | |
| 861 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 862 | 16, /* bitsize */ | |
| b34976b6 | 863 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
864 | 0, /* bitpos */ |
| 865 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 866 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 867 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 868 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
869 | 0, /* src_mask */ |
| 870 | 0xffff, /* dst_mask */ | |
| b34976b6 | 871 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
872 | |
| 873 | /* The bits 48-63 of an address. */ | |
| 874 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 875 | 48, /* rightshift */ | |
| 876 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 877 | 16, /* bitsize */ | |
| b34976b6 | 878 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
879 | 0, /* bitpos */ |
| 880 | complain_overflow_dont, /* complain_on_overflow */ | |
| 881 | bfd_elf_generic_reloc, /* special_function */ | |
| 882 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 883 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
884 | 0, /* src_mask */ |
| 885 | 0xffff, /* dst_mask */ | |
| b34976b6 | 886 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
887 | |
| 888 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 889 | 16 bits, treated as a signed number, is negative. */ | |
| 890 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 891 | 48, /* rightshift */ | |
| 892 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 893 | 16, /* bitsize */ | |
| b34976b6 | 894 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
895 | 0, /* bitpos */ |
| 896 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 897 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 898 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 899 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
900 | 0, /* src_mask */ |
| 901 | 0xffff, /* dst_mask */ | |
| b34976b6 | 902 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
903 | |
| 904 | /* Like ADDR64, but may be unaligned. */ | |
| 905 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 906 | 0, /* rightshift */ | |
| 907 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 908 | 64, /* bitsize */ | |
| b34976b6 | 909 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
910 | 0, /* bitpos */ |
| 911 | complain_overflow_dont, /* complain_on_overflow */ | |
| 912 | bfd_elf_generic_reloc, /* special_function */ | |
| 913 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 914 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 915 | 0, /* src_mask */ |
| f5e87a1d | 916 | ONES (64), /* dst_mask */ |
| b34976b6 | 917 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
918 | |
| 919 | /* 64-bit relative relocation. */ | |
| 920 | HOWTO (R_PPC64_REL64, /* type */ | |
| 921 | 0, /* rightshift */ | |
| 922 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 923 | 64, /* bitsize */ | |
| b34976b6 | 924 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
925 | 0, /* bitpos */ |
| 926 | complain_overflow_dont, /* complain_on_overflow */ | |
| 927 | bfd_elf_generic_reloc, /* special_function */ | |
| 928 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 929 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 930 | 0, /* src_mask */ |
| f5e87a1d | 931 | ONES (64), /* dst_mask */ |
| b34976b6 | 932 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 933 | |
| cedb70c5 | 934 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
935 | HOWTO (R_PPC64_PLT64, /* type */ |
| 936 | 0, /* rightshift */ | |
| 937 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 938 | 64, /* bitsize */ | |
| b34976b6 | 939 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
940 | 0, /* bitpos */ |
| 941 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 942 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 943 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 944 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 945 | 0, /* src_mask */ |
| f5e87a1d | 946 | ONES (64), /* dst_mask */ |
| b34976b6 | 947 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
948 | |
| 949 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 950 | table. */ | |
| 951 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 952 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 953 | 0, /* rightshift */ | |
| 954 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 955 | 64, /* bitsize */ | |
| b34976b6 | 956 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
957 | 0, /* bitpos */ |
| 958 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 959 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 960 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 961 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 962 | 0, /* src_mask */ |
| f5e87a1d | 963 | ONES (64), /* dst_mask */ |
| b34976b6 | 964 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
965 | |
| 966 | /* 16 bit TOC-relative relocation. */ | |
| 967 | ||
| 968 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 969 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 970 | 0, /* rightshift */ | |
| 971 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 972 | 16, /* bitsize */ | |
| b34976b6 | 973 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
974 | 0, /* bitpos */ |
| 975 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 976 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 977 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 978 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
979 | 0, /* src_mask */ |
| 980 | 0xffff, /* dst_mask */ | |
| b34976b6 | 981 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
982 | |
| 983 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 984 | ||
| 985 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 986 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 987 | 0, /* rightshift */ | |
| 988 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 989 | 16, /* bitsize */ | |
| b34976b6 | 990 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
991 | 0, /* bitpos */ |
| 992 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 993 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 994 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 995 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
996 | 0, /* src_mask */ |
| 997 | 0xffff, /* dst_mask */ | |
| b34976b6 | 998 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
999 | |
| 1000 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 1001 | ||
| 1002 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 1003 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 1004 | 16, /* rightshift */ | |
| 1005 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1006 | 16, /* bitsize */ | |
| b34976b6 | 1007 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1008 | 0, /* bitpos */ |
| f9c6b907 | 1009 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1010 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 1011 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 1012 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1013 | 0, /* src_mask */ |
| 1014 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1015 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1016 | |
| 1017 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 1018 | contents of the low 16 bits, treated as a signed number, is | |
| 1019 | negative. */ | |
| 1020 | ||
| 1021 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 1022 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 1023 | 16, /* rightshift */ | |
| 1024 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1025 | 16, /* bitsize */ | |
| b34976b6 | 1026 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1027 | 0, /* bitpos */ |
| f9c6b907 | 1028 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1029 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 1030 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 1031 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1032 | 0, /* src_mask */ |
| 1033 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1034 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1035 | |
| 1036 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 1037 | ||
| 1038 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 1039 | HOWTO (R_PPC64_TOC, /* type */ | |
| 1040 | 0, /* rightshift */ | |
| 1041 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1042 | 64, /* bitsize */ | |
| b34976b6 | 1043 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1044 | 0, /* bitpos */ |
| b80eed39 | 1045 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1046 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 1047 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 1048 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 1049 | 0, /* src_mask */ |
| f5e87a1d | 1050 | ONES (64), /* dst_mask */ |
| b34976b6 | 1051 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1052 | |
| 1053 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1054 | value to relocate may (!) refer to a PLT entry which the link | |
| 1055 | editor (a) may replace with the symbol value. If the link editor | |
| 1056 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1057 | entry and store the address to the new PLT entry in the GOT. | |
| 1058 | This permits lazy resolution of function symbols at run time. | |
| 1059 | The link editor may also skip all of this and just (c) emit a | |
| 1060 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1061 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1062 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1063 | 0, /* rightshift */ | |
| 1064 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1065 | 16, /* bitsize */ | |
| b34976b6 | 1066 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1067 | 0, /* bitpos */ |
| 1068 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1069 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1070 | "R_PPC64_PLTGOT16", /* name */ |
| 1071 | FALSE, /* partial_inplace */ | |
| 1072 | 0, /* src_mask */ | |
| 1073 | 0xffff, /* dst_mask */ | |
| 1074 | FALSE), /* pcrel_offset */ | |
| 1075 | ||
| 1076 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1077 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1078 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1079 | 0, /* rightshift */ | |
| 1080 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1081 | 16, /* bitsize */ | |
| 1082 | FALSE, /* pc_relative */ | |
| 1083 | 0, /* bitpos */ | |
| 1084 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1085 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1086 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1087 | FALSE, /* partial_inplace */ | |
| 1088 | 0, /* src_mask */ | |
| 1089 | 0xffff, /* dst_mask */ | |
| 1090 | FALSE), /* pcrel_offset */ | |
| 1091 | ||
| 1092 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1093 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1094 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1095 | 16, /* rightshift */ | |
| 1096 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1097 | 16, /* bitsize */ | |
| 1098 | FALSE, /* pc_relative */ | |
| 1099 | 0, /* bitpos */ | |
| f9c6b907 | 1100 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1101 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1102 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1103 | FALSE, /* partial_inplace */ | |
| 1104 | 0, /* src_mask */ | |
| 1105 | 0xffff, /* dst_mask */ | |
| 1106 | FALSE), /* pcrel_offset */ | |
| 1107 | ||
| 1108 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1109 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1110 | is negative. */ | |
| 1111 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1112 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1113 | 16, /* rightshift */ | |
| 1114 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1115 | 16, /* bitsize */ | |
| 1116 | FALSE, /* pc_relative */ | |
| 1117 | 0, /* bitpos */ | |
| f9c6b907 | 1118 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1119 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1120 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1121 | FALSE, /* partial_inplace */ | |
| 1122 | 0, /* src_mask */ | |
| 1123 | 0xffff, /* dst_mask */ | |
| 1124 | FALSE), /* pcrel_offset */ | |
| 1125 | ||
| 1126 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1127 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1128 | 0, /* rightshift */ | |
| 1129 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1130 | 16, /* bitsize */ | |
| 1131 | FALSE, /* pc_relative */ | |
| 1132 | 0, /* bitpos */ | |
| b80eed39 | 1133 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1134 | bfd_elf_generic_reloc, /* special_function */ |
| 1135 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1136 | FALSE, /* partial_inplace */ | |
| 1137 | 0, /* src_mask */ | |
| 1138 | 0xfffc, /* dst_mask */ | |
| 1139 | FALSE), /* pcrel_offset */ | |
| 1140 | ||
| 1141 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1142 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1143 | 0, /* rightshift */ | |
| 1144 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1145 | 16, /* bitsize */ | |
| 1146 | FALSE, /* pc_relative */ | |
| 1147 | 0, /* bitpos */ | |
| 1148 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1149 | bfd_elf_generic_reloc, /* special_function */ | |
| 1150 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1151 | FALSE, /* partial_inplace */ | |
| 1152 | 0, /* src_mask */ | |
| 1153 | 0xfffc, /* dst_mask */ | |
| 1154 | FALSE), /* pcrel_offset */ | |
| 1155 | ||
| 1156 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1157 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1158 | 0, /* rightshift */ | |
| 1159 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1160 | 16, /* bitsize */ | |
| 1161 | FALSE, /* pc_relative */ | |
| 1162 | 0, /* bitpos */ | |
| 1163 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1164 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1165 | "R_PPC64_GOT16_DS", /* name */ | |
| 1166 | FALSE, /* partial_inplace */ | |
| 1167 | 0, /* src_mask */ | |
| 1168 | 0xfffc, /* dst_mask */ | |
| 1169 | FALSE), /* pcrel_offset */ | |
| 1170 | ||
| 1171 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1172 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1173 | 0, /* rightshift */ | |
| 1174 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1175 | 16, /* bitsize */ | |
| 1176 | FALSE, /* pc_relative */ | |
| 1177 | 0, /* bitpos */ | |
| 1178 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1179 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1180 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1181 | FALSE, /* partial_inplace */ | |
| 1182 | 0, /* src_mask */ | |
| 1183 | 0xfffc, /* dst_mask */ | |
| 1184 | FALSE), /* pcrel_offset */ | |
| 1185 | ||
| 1186 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1187 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1188 | 0, /* rightshift */ | |
| 1189 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1190 | 16, /* bitsize */ | |
| 1191 | FALSE, /* pc_relative */ | |
| 1192 | 0, /* bitpos */ | |
| 1193 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1194 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1195 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1196 | FALSE, /* partial_inplace */ | |
| 1197 | 0, /* src_mask */ | |
| 1198 | 0xfffc, /* dst_mask */ | |
| 1199 | FALSE), /* pcrel_offset */ | |
| 1200 | ||
| 1201 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1202 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1203 | 0, /* rightshift */ | |
| 1204 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1205 | 16, /* bitsize */ | |
| 1206 | FALSE, /* pc_relative */ | |
| 1207 | 0, /* bitpos */ | |
| b80eed39 | 1208 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1209 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 1210 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1211 | FALSE, /* partial_inplace */ | |
| 1212 | 0, /* src_mask */ | |
| 1213 | 0xfffc, /* dst_mask */ | |
| 1214 | FALSE), /* pcrel_offset */ | |
| 1215 | ||
| 1216 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1217 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1218 | 0, /* rightshift */ | |
| 1219 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1220 | 16, /* bitsize */ | |
| 1221 | FALSE, /* pc_relative */ | |
| 1222 | 0, /* bitpos */ | |
| 1223 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1224 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1225 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1226 | FALSE, /* partial_inplace */ | |
| 1227 | 0, /* src_mask */ | |
| 1228 | 0xfffc, /* dst_mask */ | |
| 1229 | FALSE), /* pcrel_offset */ | |
| 1230 | ||
| 1231 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1232 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1233 | 0, /* rightshift */ | |
| 1234 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1235 | 16, /* bitsize */ | |
| 1236 | FALSE, /* pc_relative */ | |
| 1237 | 0, /* bitpos */ | |
| 1238 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1239 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1240 | "R_PPC64_TOC16_DS", /* name */ | |
| 1241 | FALSE, /* partial_inplace */ | |
| 1242 | 0, /* src_mask */ | |
| 1243 | 0xfffc, /* dst_mask */ | |
| 1244 | FALSE), /* pcrel_offset */ | |
| 1245 | ||
| 1246 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1247 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1248 | 0, /* rightshift */ | |
| 1249 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1250 | 16, /* bitsize */ | |
| 1251 | FALSE, /* pc_relative */ | |
| 1252 | 0, /* bitpos */ | |
| 1253 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1254 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1255 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1256 | FALSE, /* partial_inplace */ | |
| 1257 | 0, /* src_mask */ | |
| 1258 | 0xfffc, /* dst_mask */ | |
| 1259 | FALSE), /* pcrel_offset */ | |
| 1260 | ||
| 1261 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1262 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1263 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1264 | 0, /* rightshift */ |
| 1265 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1266 | 16, /* bitsize */ | |
| 1267 | FALSE, /* pc_relative */ | |
| 1268 | 0, /* bitpos */ | |
| 1269 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1270 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1271 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1272 | FALSE, /* partial_inplace */ | |
| 1273 | 0, /* src_mask */ | |
| 1274 | 0xfffc, /* dst_mask */ | |
| 1275 | FALSE), /* pcrel_offset */ | |
| 1276 | ||
| 1277 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1278 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1279 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1280 | 0, /* rightshift */ | |
| 1281 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1282 | 16, /* bitsize */ | |
| 1283 | FALSE, /* pc_relative */ | |
| 1284 | 0, /* bitpos */ | |
| 1285 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1286 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1287 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1288 | FALSE, /* partial_inplace */ | |
| 1289 | 0, /* src_mask */ | |
| 1290 | 0xfffc, /* dst_mask */ | |
| 1291 | FALSE), /* pcrel_offset */ | |
| 1292 | ||
| 727fc41e | 1293 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1294 | HOWTO (R_PPC64_TLS, |
| 1295 | 0, /* rightshift */ | |
| 1296 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1297 | 32, /* bitsize */ | |
| 1298 | FALSE, /* pc_relative */ | |
| 1299 | 0, /* bitpos */ | |
| 1300 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1301 | bfd_elf_generic_reloc, /* special_function */ | |
| 1302 | "R_PPC64_TLS", /* name */ | |
| 1303 | FALSE, /* partial_inplace */ | |
| 1304 | 0, /* src_mask */ | |
| 1305 | 0, /* dst_mask */ | |
| 1306 | FALSE), /* pcrel_offset */ | |
| 1307 | ||
| 727fc41e AM |
1308 | HOWTO (R_PPC64_TLSGD, |
| 1309 | 0, /* rightshift */ | |
| 1310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1311 | 32, /* bitsize */ | |
| 1312 | FALSE, /* pc_relative */ | |
| 1313 | 0, /* bitpos */ | |
| 1314 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1315 | bfd_elf_generic_reloc, /* special_function */ | |
| 1316 | "R_PPC64_TLSGD", /* name */ | |
| 1317 | FALSE, /* partial_inplace */ | |
| 1318 | 0, /* src_mask */ | |
| 1319 | 0, /* dst_mask */ | |
| 1320 | FALSE), /* pcrel_offset */ | |
| 1321 | ||
| 1322 | HOWTO (R_PPC64_TLSLD, | |
| 1323 | 0, /* rightshift */ | |
| 1324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1325 | 32, /* bitsize */ | |
| 1326 | FALSE, /* pc_relative */ | |
| 1327 | 0, /* bitpos */ | |
| 1328 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1329 | bfd_elf_generic_reloc, /* special_function */ | |
| 1330 | "R_PPC64_TLSLD", /* name */ | |
| 1331 | FALSE, /* partial_inplace */ | |
| 1332 | 0, /* src_mask */ | |
| 1333 | 0, /* dst_mask */ | |
| 1334 | FALSE), /* pcrel_offset */ | |
| 1335 | ||
| 3b421ab3 AM |
1336 | HOWTO (R_PPC64_TOCSAVE, |
| 1337 | 0, /* rightshift */ | |
| 1338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1339 | 32, /* bitsize */ | |
| 1340 | FALSE, /* pc_relative */ | |
| 1341 | 0, /* bitpos */ | |
| 1342 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1343 | bfd_elf_generic_reloc, /* special_function */ | |
| 1344 | "R_PPC64_TOCSAVE", /* name */ | |
| 1345 | FALSE, /* partial_inplace */ | |
| 1346 | 0, /* src_mask */ | |
| 1347 | 0, /* dst_mask */ | |
| 1348 | FALSE), /* pcrel_offset */ | |
| 1349 | ||
| 411e1bfb AM |
1350 | /* Computes the load module index of the load module that contains the |
| 1351 | definition of its TLS sym. */ | |
| 1352 | HOWTO (R_PPC64_DTPMOD64, | |
| 1353 | 0, /* rightshift */ | |
| 1354 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1355 | 64, /* bitsize */ | |
| 1356 | FALSE, /* pc_relative */ | |
| 1357 | 0, /* bitpos */ | |
| 1358 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1359 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1360 | "R_PPC64_DTPMOD64", /* name */ | |
| 1361 | FALSE, /* partial_inplace */ | |
| 1362 | 0, /* src_mask */ | |
| 1363 | ONES (64), /* dst_mask */ | |
| 1364 | FALSE), /* pcrel_offset */ | |
| 1365 | ||
| 1366 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1367 | of sym+add and the base address of the thread-local storage block that | |
| 1368 | contains the definition of sym, minus 0x8000. */ | |
| 1369 | HOWTO (R_PPC64_DTPREL64, | |
| 1370 | 0, /* rightshift */ | |
| 1371 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1372 | 64, /* bitsize */ | |
| 1373 | FALSE, /* pc_relative */ | |
| 1374 | 0, /* bitpos */ | |
| 1375 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1376 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1377 | "R_PPC64_DTPREL64", /* name */ | |
| 1378 | FALSE, /* partial_inplace */ | |
| 1379 | 0, /* src_mask */ | |
| 1380 | ONES (64), /* dst_mask */ | |
| 1381 | FALSE), /* pcrel_offset */ | |
| 1382 | ||
| 1383 | /* A 16 bit dtprel reloc. */ | |
| 1384 | HOWTO (R_PPC64_DTPREL16, | |
| 1385 | 0, /* rightshift */ | |
| 1386 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1387 | 16, /* bitsize */ | |
| 1388 | FALSE, /* pc_relative */ | |
| 1389 | 0, /* bitpos */ | |
| 1390 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1391 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1392 | "R_PPC64_DTPREL16", /* name */ | |
| 1393 | FALSE, /* partial_inplace */ | |
| 1394 | 0, /* src_mask */ | |
| 1395 | 0xffff, /* dst_mask */ | |
| 1396 | FALSE), /* pcrel_offset */ | |
| 1397 | ||
| 1398 | /* Like DTPREL16, but no overflow. */ | |
| 1399 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1400 | 0, /* rightshift */ | |
| 1401 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1402 | 16, /* bitsize */ | |
| 1403 | FALSE, /* pc_relative */ | |
| 1404 | 0, /* bitpos */ | |
| 1405 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1406 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1407 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1408 | FALSE, /* partial_inplace */ | |
| 1409 | 0, /* src_mask */ | |
| 1410 | 0xffff, /* dst_mask */ | |
| 1411 | FALSE), /* pcrel_offset */ | |
| 1412 | ||
| 1413 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1414 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1415 | 16, /* rightshift */ | |
| 1416 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1417 | 16, /* bitsize */ | |
| 1418 | FALSE, /* pc_relative */ | |
| 1419 | 0, /* bitpos */ | |
| f9c6b907 | 1420 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1421 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1422 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1423 | FALSE, /* partial_inplace */ | |
| 1424 | 0, /* src_mask */ | |
| 1425 | 0xffff, /* dst_mask */ | |
| 1426 | FALSE), /* pcrel_offset */ | |
| 1427 | ||
| 1428 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1429 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1430 | 16, /* rightshift */ | |
| 1431 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1432 | 16, /* bitsize */ | |
| 1433 | FALSE, /* pc_relative */ | |
| 1434 | 0, /* bitpos */ | |
| f9c6b907 | 1435 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1436 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1437 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1438 | FALSE, /* partial_inplace */ | |
| 1439 | 0, /* src_mask */ | |
| 1440 | 0xffff, /* dst_mask */ | |
| 1441 | FALSE), /* pcrel_offset */ | |
| 1442 | ||
| 1443 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1444 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1445 | 32, /* rightshift */ | |
| 1446 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1447 | 16, /* bitsize */ | |
| 1448 | FALSE, /* pc_relative */ | |
| 1449 | 0, /* bitpos */ | |
| 1450 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1451 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1452 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1453 | FALSE, /* partial_inplace */ | |
| 1454 | 0, /* src_mask */ | |
| 1455 | 0xffff, /* dst_mask */ | |
| 1456 | FALSE), /* pcrel_offset */ | |
| 1457 | ||
| 1458 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1459 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1460 | 32, /* rightshift */ | |
| 1461 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1462 | 16, /* bitsize */ | |
| 1463 | FALSE, /* pc_relative */ | |
| 1464 | 0, /* bitpos */ | |
| 1465 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1466 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1467 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1468 | FALSE, /* partial_inplace */ | |
| 1469 | 0, /* src_mask */ | |
| 1470 | 0xffff, /* dst_mask */ | |
| 1471 | FALSE), /* pcrel_offset */ | |
| 1472 | ||
| 1473 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1474 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1475 | 48, /* rightshift */ | |
| 1476 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1477 | 16, /* bitsize */ | |
| 1478 | FALSE, /* pc_relative */ | |
| 1479 | 0, /* bitpos */ | |
| 1480 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1481 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1482 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1483 | FALSE, /* partial_inplace */ | |
| 1484 | 0, /* src_mask */ | |
| 1485 | 0xffff, /* dst_mask */ | |
| 1486 | FALSE), /* pcrel_offset */ | |
| 1487 | ||
| 1488 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1489 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1490 | 48, /* rightshift */ | |
| 1491 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1492 | 16, /* bitsize */ | |
| 1493 | FALSE, /* pc_relative */ | |
| 1494 | 0, /* bitpos */ | |
| 1495 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1496 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1497 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1498 | FALSE, /* partial_inplace */ | |
| 1499 | 0, /* src_mask */ | |
| 1500 | 0xffff, /* dst_mask */ | |
| 1501 | FALSE), /* pcrel_offset */ | |
| 1502 | ||
| 1503 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1504 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1505 | 0, /* rightshift */ | |
| 1506 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1507 | 16, /* bitsize */ | |
| 1508 | FALSE, /* pc_relative */ | |
| 1509 | 0, /* bitpos */ | |
| 1510 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1511 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1512 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1513 | FALSE, /* partial_inplace */ | |
| 1514 | 0, /* src_mask */ | |
| 1515 | 0xfffc, /* dst_mask */ | |
| 1516 | FALSE), /* pcrel_offset */ | |
| 1517 | ||
| 1518 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1519 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1520 | 0, /* rightshift */ | |
| 1521 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1522 | 16, /* bitsize */ | |
| 1523 | FALSE, /* pc_relative */ | |
| 1524 | 0, /* bitpos */ | |
| 1525 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1526 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1527 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1528 | FALSE, /* partial_inplace */ | |
| 1529 | 0, /* src_mask */ | |
| 1530 | 0xfffc, /* dst_mask */ | |
| 1531 | FALSE), /* pcrel_offset */ | |
| 1532 | ||
| 1533 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1534 | sym+add and the value of the thread pointer (r13). */ | |
| 1535 | HOWTO (R_PPC64_TPREL64, | |
| 1536 | 0, /* rightshift */ | |
| 1537 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1538 | 64, /* bitsize */ | |
| 1539 | FALSE, /* pc_relative */ | |
| 1540 | 0, /* bitpos */ | |
| 1541 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1542 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1543 | "R_PPC64_TPREL64", /* name */ | |
| 1544 | FALSE, /* partial_inplace */ | |
| 1545 | 0, /* src_mask */ | |
| 1546 | ONES (64), /* dst_mask */ | |
| 1547 | FALSE), /* pcrel_offset */ | |
| 1548 | ||
| 1549 | /* A 16 bit tprel reloc. */ | |
| 1550 | HOWTO (R_PPC64_TPREL16, | |
| 1551 | 0, /* rightshift */ | |
| 1552 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1553 | 16, /* bitsize */ | |
| 1554 | FALSE, /* pc_relative */ | |
| 1555 | 0, /* bitpos */ | |
| 1556 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1557 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1558 | "R_PPC64_TPREL16", /* name */ | |
| 1559 | FALSE, /* partial_inplace */ | |
| 1560 | 0, /* src_mask */ | |
| 1561 | 0xffff, /* dst_mask */ | |
| 1562 | FALSE), /* pcrel_offset */ | |
| 1563 | ||
| 1564 | /* Like TPREL16, but no overflow. */ | |
| 1565 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1566 | 0, /* rightshift */ | |
| 1567 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1568 | 16, /* bitsize */ | |
| 1569 | FALSE, /* pc_relative */ | |
| 1570 | 0, /* bitpos */ | |
| 1571 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1572 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1573 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1574 | FALSE, /* partial_inplace */ | |
| 1575 | 0, /* src_mask */ | |
| 1576 | 0xffff, /* dst_mask */ | |
| 1577 | FALSE), /* pcrel_offset */ | |
| 1578 | ||
| 1579 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1580 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1581 | 16, /* rightshift */ | |
| 1582 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1583 | 16, /* bitsize */ | |
| 1584 | FALSE, /* pc_relative */ | |
| 1585 | 0, /* bitpos */ | |
| f9c6b907 | 1586 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1587 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1588 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1589 | FALSE, /* partial_inplace */ | |
| 1590 | 0, /* src_mask */ | |
| 1591 | 0xffff, /* dst_mask */ | |
| 1592 | FALSE), /* pcrel_offset */ | |
| 1593 | ||
| 1594 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1595 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1596 | 16, /* rightshift */ | |
| 1597 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1598 | 16, /* bitsize */ | |
| 1599 | FALSE, /* pc_relative */ | |
| 1600 | 0, /* bitpos */ | |
| f9c6b907 | 1601 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1602 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1603 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1604 | FALSE, /* partial_inplace */ | |
| 1605 | 0, /* src_mask */ | |
| 1606 | 0xffff, /* dst_mask */ | |
| 1607 | FALSE), /* pcrel_offset */ | |
| 1608 | ||
| 1609 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1610 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1611 | 32, /* rightshift */ | |
| 1612 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1613 | 16, /* bitsize */ | |
| 1614 | FALSE, /* pc_relative */ | |
| 1615 | 0, /* bitpos */ | |
| 1616 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1617 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1618 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1619 | FALSE, /* partial_inplace */ | |
| 1620 | 0, /* src_mask */ | |
| 1621 | 0xffff, /* dst_mask */ | |
| 1622 | FALSE), /* pcrel_offset */ | |
| 1623 | ||
| 1624 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1625 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1626 | 32, /* rightshift */ | |
| 1627 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1628 | 16, /* bitsize */ | |
| 1629 | FALSE, /* pc_relative */ | |
| 1630 | 0, /* bitpos */ | |
| 1631 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1632 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1633 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1634 | FALSE, /* partial_inplace */ | |
| 1635 | 0, /* src_mask */ | |
| 1636 | 0xffff, /* dst_mask */ | |
| 1637 | FALSE), /* pcrel_offset */ | |
| 1638 | ||
| 1639 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1640 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1641 | 48, /* rightshift */ | |
| 1642 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1643 | 16, /* bitsize */ | |
| 1644 | FALSE, /* pc_relative */ | |
| 1645 | 0, /* bitpos */ | |
| 1646 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1647 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1648 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1649 | FALSE, /* partial_inplace */ | |
| 1650 | 0, /* src_mask */ | |
| 1651 | 0xffff, /* dst_mask */ | |
| 1652 | FALSE), /* pcrel_offset */ | |
| 1653 | ||
| 1654 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1655 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1656 | 48, /* rightshift */ | |
| 1657 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1658 | 16, /* bitsize */ | |
| 1659 | FALSE, /* pc_relative */ | |
| 1660 | 0, /* bitpos */ | |
| 1661 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1662 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1663 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1664 | FALSE, /* partial_inplace */ | |
| 1665 | 0, /* src_mask */ | |
| 1666 | 0xffff, /* dst_mask */ | |
| 1667 | FALSE), /* pcrel_offset */ | |
| 1668 | ||
| 1669 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1670 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1671 | 0, /* rightshift */ | |
| 1672 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1673 | 16, /* bitsize */ | |
| 1674 | FALSE, /* pc_relative */ | |
| 1675 | 0, /* bitpos */ | |
| 1676 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1677 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1678 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1679 | FALSE, /* partial_inplace */ | |
| 1680 | 0, /* src_mask */ | |
| 1681 | 0xfffc, /* dst_mask */ | |
| 1682 | FALSE), /* pcrel_offset */ | |
| 1683 | ||
| 1684 | /* Like TPREL16_DS, but no overflow. */ | |
| 1685 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1686 | 0, /* rightshift */ | |
| 1687 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1688 | 16, /* bitsize */ | |
| 1689 | FALSE, /* pc_relative */ | |
| 1690 | 0, /* bitpos */ | |
| 1691 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1692 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1693 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1694 | FALSE, /* partial_inplace */ | |
| 1695 | 0, /* src_mask */ | |
| 1696 | 0xfffc, /* dst_mask */ | |
| 1697 | FALSE), /* pcrel_offset */ | |
| 1698 | ||
| 1699 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1700 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1701 | to the first entry relative to the TOC base (r2). */ | |
| 1702 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1703 | 0, /* rightshift */ | |
| 1704 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1705 | 16, /* bitsize */ | |
| 1706 | FALSE, /* pc_relative */ | |
| 1707 | 0, /* bitpos */ | |
| 1708 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1709 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1710 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1711 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1712 | 0, /* src_mask */ |
| 1713 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1714 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1715 | |
| 411e1bfb AM |
1716 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1717 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1718 | 0, /* rightshift */ |
| 1719 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1720 | 16, /* bitsize */ | |
| b34976b6 | 1721 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1722 | 0, /* bitpos */ |
| 1723 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1724 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1725 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1726 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1727 | 0, /* src_mask */ |
| 1728 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1729 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1730 | |
| 411e1bfb AM |
1731 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1732 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1733 | 16, /* rightshift */ |
| 1734 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1735 | 16, /* bitsize */ | |
| b34976b6 | 1736 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1737 | 0, /* bitpos */ |
| f9c6b907 | 1738 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1739 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1740 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1741 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1742 | 0, /* src_mask */ |
| 1743 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1744 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1745 | |
| 411e1bfb AM |
1746 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1747 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1748 | 16, /* rightshift */ |
| 1749 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1750 | 16, /* bitsize */ | |
| b34976b6 | 1751 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1752 | 0, /* bitpos */ |
| f9c6b907 | 1753 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1754 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1755 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1756 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1757 | 0, /* src_mask */ |
| 1758 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1759 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1760 | |
| 411e1bfb AM |
1761 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1762 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1763 | first entry relative to the TOC base (r2). */ | |
| 1764 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1765 | 0, /* rightshift */ |
| 1766 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1767 | 16, /* bitsize */ | |
| b34976b6 | 1768 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1769 | 0, /* bitpos */ |
| 411e1bfb AM |
1770 | complain_overflow_signed, /* complain_on_overflow */ |
| 1771 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1772 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1773 | FALSE, /* partial_inplace */ |
| d006db6c | 1774 | 0, /* src_mask */ |
| 411e1bfb | 1775 | 0xffff, /* dst_mask */ |
| b34976b6 | 1776 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1777 | |
| 411e1bfb AM |
1778 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1779 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1780 | 0, /* rightshift */ |
| 1781 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1782 | 16, /* bitsize */ | |
| b34976b6 | 1783 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1784 | 0, /* bitpos */ |
| 411e1bfb AM |
1785 | complain_overflow_dont, /* complain_on_overflow */ |
| 1786 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1787 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1788 | FALSE, /* partial_inplace */ |
| d006db6c | 1789 | 0, /* src_mask */ |
| 411e1bfb | 1790 | 0xffff, /* dst_mask */ |
| b34976b6 | 1791 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1792 | |
| 411e1bfb AM |
1793 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1794 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1795 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1796 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1797 | 16, /* bitsize */ | |
| b34976b6 | 1798 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1799 | 0, /* bitpos */ |
| f9c6b907 | 1800 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1801 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1802 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1803 | FALSE, /* partial_inplace */ |
| d006db6c | 1804 | 0, /* src_mask */ |
| 411e1bfb | 1805 | 0xffff, /* dst_mask */ |
| b34976b6 | 1806 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1807 | |
| 411e1bfb AM |
1808 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1809 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1810 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1811 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1812 | 16, /* bitsize */ | |
| b34976b6 | 1813 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1814 | 0, /* bitpos */ |
| f9c6b907 | 1815 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1816 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1817 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1818 | FALSE, /* partial_inplace */ |
| d006db6c | 1819 | 0, /* src_mask */ |
| 411e1bfb | 1820 | 0xffff, /* dst_mask */ |
| b34976b6 | 1821 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1822 | |
| 411e1bfb AM |
1823 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1824 | the offset to the entry relative to the TOC base (r2). */ | |
| 1825 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1826 | 0, /* rightshift */ |
| 1827 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1828 | 16, /* bitsize */ | |
| b34976b6 | 1829 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1830 | 0, /* bitpos */ |
| 411e1bfb | 1831 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1832 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1833 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1834 | FALSE, /* partial_inplace */ |
| d006db6c | 1835 | 0, /* src_mask */ |
| 5bd4f169 | 1836 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1837 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1838 | |
| 411e1bfb AM |
1839 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1840 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1841 | 0, /* rightshift */ |
| c061c2d8 AM |
1842 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1843 | 16, /* bitsize */ | |
| b34976b6 | 1844 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1845 | 0, /* bitpos */ |
| 411e1bfb AM |
1846 | complain_overflow_dont, /* complain_on_overflow */ |
| 1847 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1848 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1849 | FALSE, /* partial_inplace */ |
| d006db6c | 1850 | 0, /* src_mask */ |
| c061c2d8 | 1851 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1852 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1853 | |
| 411e1bfb AM |
1854 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1855 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1856 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1857 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1858 | 16, /* bitsize */ | |
| b34976b6 | 1859 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1860 | 0, /* bitpos */ |
| f9c6b907 | 1861 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1862 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1863 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1864 | FALSE, /* partial_inplace */ |
| d006db6c | 1865 | 0, /* src_mask */ |
| 411e1bfb | 1866 | 0xffff, /* dst_mask */ |
| b34976b6 | 1867 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1868 | |
| 411e1bfb AM |
1869 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1870 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1871 | 16, /* rightshift */ | |
| 1872 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1873 | 16, /* bitsize */ | |
| 1874 | FALSE, /* pc_relative */ | |
| 1875 | 0, /* bitpos */ | |
| f9c6b907 | 1876 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1877 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1878 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1879 | FALSE, /* partial_inplace */ | |
| 1880 | 0, /* src_mask */ | |
| 1881 | 0xffff, /* dst_mask */ | |
| 1882 | FALSE), /* pcrel_offset */ | |
| 1883 | ||
| 1884 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1885 | offset to the entry relative to the TOC base (r2). */ | |
| 1886 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1887 | 0, /* rightshift */ |
| 1888 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1889 | 16, /* bitsize */ | |
| b34976b6 | 1890 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1891 | 0, /* bitpos */ |
| 1892 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1893 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1894 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1895 | FALSE, /* partial_inplace */ |
| d006db6c | 1896 | 0, /* src_mask */ |
| ad8e1ba5 | 1897 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1898 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1899 | |
| 411e1bfb AM |
1900 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1901 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1902 | 0, /* rightshift */ |
| 1903 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1904 | 16, /* bitsize */ | |
| b34976b6 | 1905 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1906 | 0, /* bitpos */ |
| 1907 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1908 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1909 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1910 | FALSE, /* partial_inplace */ |
| d006db6c | 1911 | 0, /* src_mask */ |
| ad8e1ba5 | 1912 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1913 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1914 | |
| 411e1bfb AM |
1915 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1916 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1917 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1918 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1919 | 16, /* bitsize */ | |
| b34976b6 | 1920 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1921 | 0, /* bitpos */ |
| f9c6b907 | 1922 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1923 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1924 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1925 | FALSE, /* partial_inplace */ |
| d006db6c | 1926 | 0, /* src_mask */ |
| 411e1bfb | 1927 | 0xffff, /* dst_mask */ |
| b34976b6 | 1928 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1929 | |
| 411e1bfb AM |
1930 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1931 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1932 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1933 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1934 | 16, /* bitsize */ | |
| b34976b6 | 1935 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1936 | 0, /* bitpos */ |
| f9c6b907 | 1937 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1938 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1939 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1940 | FALSE, /* partial_inplace */ |
| d006db6c | 1941 | 0, /* src_mask */ |
| 411e1bfb | 1942 | 0xffff, /* dst_mask */ |
| b34976b6 | 1943 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1944 | |
| 25f23106 AM |
1945 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1946 | 0, /* rightshift */ | |
| 1947 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1948 | 0, /* bitsize */ | |
| 1949 | FALSE, /* pc_relative */ | |
| 1950 | 0, /* bitpos */ | |
| 1951 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1952 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1953 | "R_PPC64_JMP_IREL", /* name */ | |
| 1954 | FALSE, /* partial_inplace */ | |
| 1955 | 0, /* src_mask */ | |
| 1956 | 0, /* dst_mask */ | |
| 1957 | FALSE), /* pcrel_offset */ | |
| 1958 | ||
| e054468f AM |
1959 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1960 | 0, /* rightshift */ | |
| 1961 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1962 | 64, /* bitsize */ | |
| 1963 | FALSE, /* pc_relative */ | |
| 1964 | 0, /* bitpos */ | |
| 1965 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1966 | bfd_elf_generic_reloc, /* special_function */ | |
| 1967 | "R_PPC64_IRELATIVE", /* name */ | |
| 1968 | FALSE, /* partial_inplace */ | |
| 1969 | 0, /* src_mask */ | |
| 1970 | ONES (64), /* dst_mask */ | |
| 1971 | FALSE), /* pcrel_offset */ | |
| 1972 | ||
| 25f23106 AM |
1973 | /* A 16 bit relative relocation. */ |
| 1974 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1975 | 0, /* rightshift */ | |
| 1976 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1977 | 16, /* bitsize */ | |
| 1978 | TRUE, /* pc_relative */ | |
| 1979 | 0, /* bitpos */ | |
| b80eed39 | 1980 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1981 | bfd_elf_generic_reloc, /* special_function */ |
| 1982 | "R_PPC64_REL16", /* name */ | |
| 1983 | FALSE, /* partial_inplace */ | |
| 1984 | 0, /* src_mask */ | |
| 1985 | 0xffff, /* dst_mask */ | |
| 1986 | TRUE), /* pcrel_offset */ | |
| 1987 | ||
| 1988 | /* A 16 bit relative relocation without overflow. */ | |
| 1989 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1990 | 0, /* rightshift */ | |
| 1991 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1992 | 16, /* bitsize */ | |
| 1993 | TRUE, /* pc_relative */ | |
| 1994 | 0, /* bitpos */ | |
| 1995 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1996 | bfd_elf_generic_reloc, /* special_function */ | |
| 1997 | "R_PPC64_REL16_LO", /* name */ | |
| 1998 | FALSE, /* partial_inplace */ | |
| 1999 | 0, /* src_mask */ | |
| 2000 | 0xffff, /* dst_mask */ | |
| 2001 | TRUE), /* pcrel_offset */ | |
| 2002 | ||
| 2003 | /* The high order 16 bits of a relative address. */ | |
| 2004 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 2005 | 16, /* rightshift */ | |
| 2006 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2007 | 16, /* bitsize */ | |
| 2008 | TRUE, /* pc_relative */ | |
| 2009 | 0, /* bitpos */ | |
| f9c6b907 | 2010 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
2011 | bfd_elf_generic_reloc, /* special_function */ |
| 2012 | "R_PPC64_REL16_HI", /* name */ | |
| 2013 | FALSE, /* partial_inplace */ | |
| 2014 | 0, /* src_mask */ | |
| 2015 | 0xffff, /* dst_mask */ | |
| 2016 | TRUE), /* pcrel_offset */ | |
| 2017 | ||
| 2018 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 2019 | the low 16 bits, treated as a signed number, is negative. */ | |
| 2020 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 2021 | 16, /* rightshift */ | |
| 2022 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2023 | 16, /* bitsize */ | |
| 2024 | TRUE, /* pc_relative */ | |
| 2025 | 0, /* bitpos */ | |
| f9c6b907 | 2026 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
2027 | ppc64_elf_ha_reloc, /* special_function */ |
| 2028 | "R_PPC64_REL16_HA", /* name */ | |
| 2029 | FALSE, /* partial_inplace */ | |
| 2030 | 0, /* src_mask */ | |
| 2031 | 0xffff, /* dst_mask */ | |
| 2032 | TRUE), /* pcrel_offset */ | |
| 2033 | ||
| a680de9a PB |
2034 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
| 2035 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
| 2036 | 16, /* rightshift */ | |
| 2037 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2038 | 16, /* bitsize */ | |
| 2039 | TRUE, /* pc_relative */ | |
| 2040 | 0, /* bitpos */ | |
| 2041 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2042 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2043 | "R_PPC64_REL16DX_HA", /* name */ | |
| 2044 | FALSE, /* partial_inplace */ | |
| 2045 | 0, /* src_mask */ | |
| 2046 | 0x1fffc1, /* dst_mask */ | |
| 2047 | TRUE), /* pcrel_offset */ | |
| 2048 | ||
| 7ba71655 AM |
2049 | /* A split-field reloc for addpcis, non-relative (gas internal use only). */ |
| 2050 | HOWTO (R_PPC64_16DX_HA, /* type */ | |
| 2051 | 16, /* rightshift */ | |
| 2052 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2053 | 16, /* bitsize */ | |
| 2054 | FALSE, /* pc_relative */ | |
| 2055 | 0, /* bitpos */ | |
| 2056 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2057 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2058 | "R_PPC64_16DX_HA", /* name */ | |
| 2059 | FALSE, /* partial_inplace */ | |
| 2060 | 0, /* src_mask */ | |
| 2061 | 0x1fffc1, /* dst_mask */ | |
| 2062 | FALSE), /* pcrel_offset */ | |
| 2063 | ||
| f9c6b907 AM |
2064 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
| 2065 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
| 2066 | 16, /* rightshift */ | |
| 2067 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2068 | 16, /* bitsize */ | |
| 2069 | FALSE, /* pc_relative */ | |
| 2070 | 0, /* bitpos */ | |
| 2071 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2072 | bfd_elf_generic_reloc, /* special_function */ | |
| 2073 | "R_PPC64_ADDR16_HIGH", /* name */ | |
| 2074 | FALSE, /* partial_inplace */ | |
| 2075 | 0, /* src_mask */ | |
| 2076 | 0xffff, /* dst_mask */ | |
| 2077 | FALSE), /* pcrel_offset */ | |
| 2078 | ||
| 2079 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
| 2080 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
| 2081 | 16, /* rightshift */ | |
| 2082 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2083 | 16, /* bitsize */ | |
| 2084 | FALSE, /* pc_relative */ | |
| 2085 | 0, /* bitpos */ | |
| 2086 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2087 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2088 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
| 2089 | FALSE, /* partial_inplace */ | |
| 2090 | 0, /* src_mask */ | |
| 2091 | 0xffff, /* dst_mask */ | |
| 2092 | FALSE), /* pcrel_offset */ | |
| 2093 | ||
| 2094 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
| 2095 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
| 2096 | 16, /* rightshift */ | |
| 2097 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2098 | 16, /* bitsize */ | |
| 2099 | FALSE, /* pc_relative */ | |
| 2100 | 0, /* bitpos */ | |
| 2101 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2102 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2103 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
| 2104 | FALSE, /* partial_inplace */ | |
| 2105 | 0, /* src_mask */ | |
| 2106 | 0xffff, /* dst_mask */ | |
| 2107 | FALSE), /* pcrel_offset */ | |
| 2108 | ||
| 2109 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
| 2110 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
| 2111 | 16, /* rightshift */ | |
| 2112 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2113 | 16, /* bitsize */ | |
| 2114 | FALSE, /* pc_relative */ | |
| 2115 | 0, /* bitpos */ | |
| 2116 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2117 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2118 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
| 2119 | FALSE, /* partial_inplace */ | |
| 2120 | 0, /* src_mask */ | |
| 2121 | 0xffff, /* dst_mask */ | |
| 2122 | FALSE), /* pcrel_offset */ | |
| 2123 | ||
| 2124 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
| 2125 | HOWTO (R_PPC64_TPREL16_HIGH, | |
| 2126 | 16, /* rightshift */ | |
| 2127 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2128 | 16, /* bitsize */ | |
| 2129 | FALSE, /* pc_relative */ | |
| 2130 | 0, /* bitpos */ | |
| 2131 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2132 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2133 | "R_PPC64_TPREL16_HIGH", /* name */ | |
| 2134 | FALSE, /* partial_inplace */ | |
| 2135 | 0, /* src_mask */ | |
| 2136 | 0xffff, /* dst_mask */ | |
| 2137 | FALSE), /* pcrel_offset */ | |
| 2138 | ||
| 2139 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
| 2140 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
| 2141 | 16, /* rightshift */ | |
| 2142 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2143 | 16, /* bitsize */ | |
| 2144 | FALSE, /* pc_relative */ | |
| 2145 | 0, /* bitpos */ | |
| 2146 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2147 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2148 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
| 2149 | FALSE, /* partial_inplace */ | |
| 2150 | 0, /* src_mask */ | |
| 2151 | 0xffff, /* dst_mask */ | |
| 2152 | FALSE), /* pcrel_offset */ | |
| 2153 | ||
| 006589cf AM |
2154 | /* Marker reloc on ELFv2 large-model function entry. */ |
| 2155 | HOWTO (R_PPC64_ENTRY, | |
| 2156 | 0, /* rightshift */ | |
| 2157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2158 | 32, /* bitsize */ | |
| 2159 | FALSE, /* pc_relative */ | |
| 2160 | 0, /* bitpos */ | |
| 2161 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2162 | bfd_elf_generic_reloc, /* special_function */ | |
| 2163 | "R_PPC64_ENTRY", /* name */ | |
| 2164 | FALSE, /* partial_inplace */ | |
| 2165 | 0, /* src_mask */ | |
| 2166 | 0, /* dst_mask */ | |
| 2167 | FALSE), /* pcrel_offset */ | |
| 2168 | ||
| 45965137 AM |
2169 | /* Like ADDR64, but use local entry point of function. */ |
| 2170 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
| 2171 | 0, /* rightshift */ | |
| 2172 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 2173 | 64, /* bitsize */ | |
| 2174 | FALSE, /* pc_relative */ | |
| 2175 | 0, /* bitpos */ | |
| 2176 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2177 | bfd_elf_generic_reloc, /* special_function */ | |
| 2178 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
| 2179 | FALSE, /* partial_inplace */ | |
| 2180 | 0, /* src_mask */ | |
| 2181 | ONES (64), /* dst_mask */ | |
| 2182 | FALSE), /* pcrel_offset */ | |
| 2183 | ||
| 5bd4f169 AM |
2184 | /* GNU extension to record C++ vtable hierarchy. */ |
| 2185 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 2186 | 0, /* rightshift */ | |
| 2187 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2188 | 0, /* bitsize */ | |
| b34976b6 | 2189 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2190 | 0, /* bitpos */ |
| 2191 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2192 | NULL, /* special_function */ | |
| 2193 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 2194 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2195 | 0, /* src_mask */ |
| 2196 | 0, /* dst_mask */ | |
| b34976b6 | 2197 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2198 | |
| 2199 | /* GNU extension to record C++ vtable member usage. */ | |
| 2200 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 2201 | 0, /* rightshift */ | |
| 2202 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2203 | 0, /* bitsize */ | |
| b34976b6 | 2204 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2205 | 0, /* bitpos */ |
| 2206 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2207 | NULL, /* special_function */ | |
| 2208 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 2209 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2210 | 0, /* src_mask */ |
| 2211 | 0, /* dst_mask */ | |
| b34976b6 | 2212 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2213 | }; |
| 2214 | ||
| 2215 | \f | |
| 2216 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 2217 | be done. */ | |
| 2218 | ||
| 2219 | static void | |
| 4ce794b7 | 2220 | ppc_howto_init (void) |
| 5bd4f169 AM |
2221 | { |
| 2222 | unsigned int i, type; | |
| 2223 | ||
| a4b6fadd | 2224 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
| 5bd4f169 AM |
2225 | { |
| 2226 | type = ppc64_elf_howto_raw[i].type; | |
| a4b6fadd | 2227 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
| 5bd4f169 AM |
2228 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
| 2229 | } | |
| 2230 | } | |
| 2231 | ||
| 2232 | static reloc_howto_type * | |
| 4ce794b7 AM |
2233 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2234 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2235 | { |
| 411e1bfb | 2236 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2237 | |
| 2238 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2239 | /* Initialize howto table if needed. */ | |
| 2240 | ppc_howto_init (); | |
| 2241 | ||
| 4ce794b7 | 2242 | switch (code) |
| 5bd4f169 AM |
2243 | { |
| 2244 | default: | |
| 4ce794b7 | 2245 | return NULL; |
| 5bd4f169 | 2246 | |
| 411e1bfb AM |
2247 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2248 | break; | |
| 2249 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2250 | break; | |
| 2251 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2252 | break; | |
| 2253 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2254 | break; | |
| 2255 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2256 | break; | |
| 2257 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2258 | break; | |
| f9c6b907 AM |
2259 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
| 2260 | break; | |
| 411e1bfb | 2261 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
| 5bd4f169 | 2262 | break; |
| f9c6b907 AM |
2263 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
| 2264 | break; | |
| 411e1bfb | 2265 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2266 | break; |
| 411e1bfb | 2267 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2268 | break; |
| 411e1bfb | 2269 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2270 | break; |
| 411e1bfb | 2271 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2272 | break; |
| 411e1bfb | 2273 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2274 | break; |
| 411e1bfb | 2275 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2276 | break; |
| 411e1bfb | 2277 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2278 | break; |
| 411e1bfb | 2279 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2280 | break; |
| 411e1bfb | 2281 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2282 | break; |
| 411e1bfb | 2283 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2284 | break; |
| 411e1bfb | 2285 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2286 | break; |
| 411e1bfb | 2287 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2288 | break; |
| 411e1bfb | 2289 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2290 | break; |
| 411e1bfb | 2291 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2292 | break; |
| 411e1bfb | 2293 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2294 | break; |
| 411e1bfb | 2295 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2296 | break; |
| 411e1bfb | 2297 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2298 | break; |
| 411e1bfb | 2299 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2300 | break; |
| 411e1bfb | 2301 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2302 | break; |
| 411e1bfb | 2303 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2304 | break; |
| 411e1bfb | 2305 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2306 | break; |
| 411e1bfb | 2307 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2308 | break; |
| 411e1bfb | 2309 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2310 | break; |
| 411e1bfb | 2311 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2312 | break; |
| 411e1bfb | 2313 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2314 | break; |
| 411e1bfb | 2315 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2316 | break; |
| 411e1bfb | 2317 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2318 | break; |
| 411e1bfb | 2319 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2320 | break; |
| 411e1bfb | 2321 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2322 | break; |
| 411e1bfb | 2323 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2324 | break; |
| 411e1bfb | 2325 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2326 | break; |
| 411e1bfb | 2327 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2328 | break; |
| 411e1bfb | 2329 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2330 | break; |
| 411e1bfb | 2331 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2332 | break; |
| 411e1bfb | 2333 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2334 | break; |
| 411e1bfb | 2335 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2336 | break; |
| 411e1bfb | 2337 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2338 | break; |
| 411e1bfb | 2339 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2340 | break; |
| 411e1bfb | 2341 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2342 | break; |
| 411e1bfb | 2343 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2344 | break; |
| 411e1bfb | 2345 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2346 | break; |
| 411e1bfb | 2347 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2348 | break; |
| 411e1bfb | 2349 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2350 | break; |
| 411e1bfb | 2351 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2352 | break; |
| 411e1bfb | 2353 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2354 | break; |
| 411e1bfb | 2355 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2356 | break; |
| 411e1bfb | 2357 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2358 | break; |
| 411e1bfb | 2359 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2360 | break; |
| 411e1bfb | 2361 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2362 | break; |
| 411e1bfb | 2363 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2364 | break; |
| 411e1bfb | 2365 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2366 | break; |
| 411e1bfb | 2367 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2368 | break; |
| 411e1bfb | 2369 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2370 | break; |
| 727fc41e AM |
2371 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2372 | break; | |
| 2373 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2374 | break; | |
| 411e1bfb | 2375 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2376 | break; |
| 411e1bfb | 2377 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2378 | break; |
| 411e1bfb | 2379 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2380 | break; |
| 411e1bfb | 2381 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2382 | break; |
| f9c6b907 AM |
2383 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
| 2384 | break; | |
| 411e1bfb | 2385 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2386 | break; |
| f9c6b907 AM |
2387 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
| 2388 | break; | |
| 411e1bfb | 2389 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2390 | break; |
| 411e1bfb AM |
2391 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2392 | break; | |
| 2393 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2394 | break; | |
| 2395 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2396 | break; | |
| f9c6b907 AM |
2397 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
| 2398 | break; | |
| 411e1bfb AM |
2399 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
| 2400 | break; | |
| f9c6b907 AM |
2401 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
| 2402 | break; | |
| 411e1bfb AM |
2403 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
| 2404 | break; | |
| 2405 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2406 | break; | |
| 2407 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2408 | break; | |
| 2409 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2410 | break; | |
| 2411 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2412 | break; | |
| 2413 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2414 | break; | |
| 2415 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2416 | break; | |
| 2417 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2418 | break; | |
| 2419 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2420 | break; | |
| 2421 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2422 | break; | |
| 2423 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2424 | break; | |
| 2425 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2426 | break; | |
| 2427 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2428 | break; | |
| 2429 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2430 | break; | |
| 2431 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2432 | break; | |
| 2433 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2434 | break; | |
| 2435 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2436 | break; | |
| 2437 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2438 | break; | |
| 2439 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2440 | break; | |
| 2441 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2442 | break; | |
| 2443 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2444 | break; | |
| 2445 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2446 | break; | |
| 2447 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2448 | break; | |
| 2449 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2450 | break; | |
| 2451 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2452 | break; | |
| 2453 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2454 | break; | |
| 2455 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2456 | break; | |
| 2457 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2458 | break; | |
| 2459 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2460 | break; | |
| 25f23106 AM |
2461 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2462 | break; | |
| 2463 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2464 | break; | |
| 2465 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2466 | break; | |
| 2467 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2468 | break; | |
| 7ba71655 AM |
2469 | case BFD_RELOC_PPC_16DX_HA: r = R_PPC64_16DX_HA; |
| 2470 | break; | |
| a680de9a PB |
2471 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
| 2472 | break; | |
| 006589cf AM |
2473 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
| 2474 | break; | |
| 45965137 AM |
2475 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
| 2476 | break; | |
| 411e1bfb AM |
2477 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2478 | break; | |
| 2479 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2480 | break; |
| 2481 | } | |
| 2482 | ||
| 4ce794b7 | 2483 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2484 | }; |
| 2485 | ||
| 157090f7 AM |
2486 | static reloc_howto_type * |
| 2487 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2488 | const char *r_name) | |
| 2489 | { | |
| 2490 | unsigned int i; | |
| 2491 | ||
| a4b6fadd | 2492 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
| 157090f7 AM |
2493 | if (ppc64_elf_howto_raw[i].name != NULL |
| 2494 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2495 | return &ppc64_elf_howto_raw[i]; | |
| 2496 | ||
| 2497 | return NULL; | |
| 2498 | } | |
| 2499 | ||
| 5bd4f169 AM |
2500 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2501 | ||
| 2502 | static void | |
| 4aef7643 | 2503 | ppc64_elf_info_to_howto (bfd *abfd, arelent *cache_ptr, |
| 4ce794b7 | 2504 | Elf_Internal_Rela *dst) |
| 5bd4f169 | 2505 | { |
| 65f38f15 AM |
2506 | unsigned int type; |
| 2507 | ||
| ef60b7ff | 2508 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2509 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2510 | ppc_howto_init (); |
| 2511 | ||
| 65f38f15 | 2512 | type = ELF64_R_TYPE (dst->r_info); |
| a4b6fadd | 2513 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
| d0fb9a8d | 2514 | { |
| 695344c0 | 2515 | /* xgettext:c-format */ |
| 4eca0228 AM |
2516 | _bfd_error_handler (_("%B: invalid relocation type %d"), |
| 2517 | abfd, (int) type); | |
| 3ec2b351 | 2518 | type = R_PPC64_NONE; |
| d0fb9a8d | 2519 | } |
| 65f38f15 | 2520 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2521 | } |
| 2522 | ||
| 04c9666a | 2523 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2524 | |
| 2525 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2526 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2527 | void *data, asection *input_section, | |
| 2528 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2529 | { |
| a680de9a PB |
2530 | enum elf_ppc64_reloc_type r_type; |
| 2531 | long insn; | |
| 2532 | bfd_size_type octets; | |
| 3de43e7b | 2533 | bfd_vma value; |
| a680de9a | 2534 | |
| 805fc799 AM |
2535 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2536 | call the generic function. Any adjustment will be done at final | |
| 2537 | link time. */ | |
| 2538 | if (output_bfd != NULL) | |
| cedb70c5 | 2539 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2540 | input_section, output_bfd, error_message); |
| 2541 | ||
| 2542 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2543 | We won't actually be using the low 16 bits, so trashing them | |
| 2544 | doesn't matter. */ | |
| 2545 | reloc_entry->addend += 0x8000; | |
| a680de9a PB |
2546 | r_type = reloc_entry->howto->type; |
| 2547 | if (r_type != R_PPC64_REL16DX_HA) | |
| 2548 | return bfd_reloc_continue; | |
| 2549 | ||
| 2550 | value = 0; | |
| 2551 | if (!bfd_is_com_section (symbol->section)) | |
| 2552 | value = symbol->value; | |
| 2553 | value += (reloc_entry->addend | |
| 2554 | + symbol->section->output_offset | |
| 2555 | + symbol->section->output_section->vma); | |
| 2556 | value -= (reloc_entry->address | |
| 2557 | + input_section->output_offset | |
| 2558 | + input_section->output_section->vma); | |
| 3de43e7b | 2559 | value = (bfd_signed_vma) value >> 16; |
| a680de9a PB |
2560 | |
| 2561 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2562 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2563 | insn &= ~0x1fffc1; | |
| 3de43e7b | 2564 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); |
| a680de9a | 2565 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 3de43e7b | 2566 | if (value + 0x8000 > 0xffff) |
| a680de9a PB |
2567 | return bfd_reloc_overflow; |
| 2568 | return bfd_reloc_ok; | |
| 805fc799 | 2569 | } |
| 5bd4f169 | 2570 | |
| 2441e016 AM |
2571 | static bfd_reloc_status_type |
| 2572 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2573 | void *data, asection *input_section, | |
| 2574 | bfd *output_bfd, char **error_message) | |
| 2575 | { | |
| 2576 | if (output_bfd != NULL) | |
| 2577 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2578 | input_section, output_bfd, error_message); | |
| 2579 | ||
| 699733f6 AM |
2580 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2581 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2582 | { |
| 2583 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2584 | symbol->value + reloc_entry->addend, | |
| aef36ac1 | 2585 | NULL, NULL, FALSE); |
| 2441e016 AM |
2586 | if (dest != (bfd_vma) -1) |
| 2587 | reloc_entry->addend = dest - (symbol->value | |
| 2588 | + symbol->section->output_section->vma | |
| 2589 | + symbol->section->output_offset); | |
| 2590 | } | |
| 810d4e75 AM |
2591 | else |
| 2592 | { | |
| 2593 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
| 2594 | ||
| 2595 | if (symbol->section->owner != abfd | |
| 9f284bf9 | 2596 | && symbol->section->owner != NULL |
| 810d4e75 AM |
2597 | && abiversion (symbol->section->owner) >= 2) |
| 2598 | { | |
| 2599 | unsigned int i; | |
| 2600 | ||
| 2601 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
| 2602 | { | |
| 2603 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
| 2604 | ||
| 2605 | if (strcmp (symdef->name, symbol->name) == 0) | |
| 2606 | { | |
| 2607 | elfsym = (elf_symbol_type *) symdef; | |
| 2608 | break; | |
| 2609 | } | |
| 2610 | } | |
| 2611 | } | |
| 2612 | reloc_entry->addend | |
| 2613 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
| 2614 | } | |
| 2441e016 AM |
2615 | return bfd_reloc_continue; |
| 2616 | } | |
| 2617 | ||
| 805fc799 | 2618 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2619 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2620 | void *data, asection *input_section, | |
| 2621 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2622 | { |
| 2623 | long insn; | |
| 04c9666a | 2624 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 | 2625 | bfd_size_type octets; |
| 794e51c0 AM |
2626 | /* Assume 'at' branch hints. */ |
| 2627 | bfd_boolean is_isa_v2 = TRUE; | |
| 805fc799 AM |
2628 | |
| 2629 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2630 | call the generic function. Any adjustment will be done at final | |
| 2631 | link time. */ | |
| 5bd4f169 | 2632 | if (output_bfd != NULL) |
| cedb70c5 | 2633 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2634 | input_section, output_bfd, error_message); |
| 2635 | ||
| 2636 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2637 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2638 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2639 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2640 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2641 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2642 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 | 2643 | |
| 794e51c0 | 2644 | if (is_isa_v2) |
| 5bd4f169 | 2645 | { |
| 805fc799 AM |
2646 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2647 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2648 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2649 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2650 | insn |= 0x02 << 21; | |
| 2651 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2652 | insn |= 0x08 << 21; | |
| 2653 | else | |
| 2441e016 | 2654 | goto out; |
| 5bd4f169 | 2655 | } |
| 805fc799 AM |
2656 | else |
| 2657 | { | |
| 2658 | bfd_vma target = 0; | |
| 2659 | bfd_vma from; | |
| 5bd4f169 | 2660 | |
| 805fc799 AM |
2661 | if (!bfd_is_com_section (symbol->section)) |
| 2662 | target = symbol->value; | |
| 2663 | target += symbol->section->output_section->vma; | |
| 2664 | target += symbol->section->output_offset; | |
| 2665 | target += reloc_entry->addend; | |
| 5bd4f169 | 2666 | |
| 805fc799 AM |
2667 | from = (reloc_entry->address |
| 2668 | + input_section->output_offset | |
| 2669 | + input_section->output_section->vma); | |
| 5bd4f169 | 2670 | |
| 805fc799 AM |
2671 | /* Invert 'y' bit if not the default. */ |
| 2672 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2673 | insn ^= 0x01 << 21; | |
| 2674 | } | |
| 4ce794b7 | 2675 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2676 | out: |
| 2677 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2678 | input_section, output_bfd, error_message); | |
| 805fc799 | 2679 | } |
| 5bd4f169 | 2680 | |
| 805fc799 | 2681 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2682 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2683 | void *data, asection *input_section, | |
| 2684 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2685 | { |
| 2686 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2687 | call the generic function. Any adjustment will be done at final | |
| 2688 | link time. */ | |
| 2689 | if (output_bfd != NULL) | |
| cedb70c5 | 2690 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2691 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2692 | |
| 805fc799 AM |
2693 | /* Subtract the symbol section base address. */ |
| 2694 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2695 | return bfd_reloc_continue; |
| 2696 | } | |
| 2697 | ||
| 805fc799 | 2698 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2699 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2700 | void *data, asection *input_section, | |
| 2701 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2702 | { |
| 2703 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2704 | call the generic function. Any adjustment will be done at final | |
| 2705 | link time. */ | |
| 2706 | if (output_bfd != NULL) | |
| cedb70c5 | 2707 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2708 | input_section, output_bfd, error_message); |
| 2709 | ||
| 2710 | /* Subtract the symbol section base address. */ | |
| 2711 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2712 | ||
| 2713 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2714 | reloc_entry->addend += 0x8000; | |
| 2715 | return bfd_reloc_continue; | |
| 2716 | } | |
| 2717 | ||
| 2718 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2719 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2720 | void *data, asection *input_section, | |
| 2721 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2722 | { |
| 2723 | bfd_vma TOCstart; | |
| 2724 | ||
| 2725 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2726 | call the generic function. Any adjustment will be done at final | |
| 2727 | link time. */ | |
| 2728 | if (output_bfd != NULL) | |
| cedb70c5 | 2729 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2730 | input_section, output_bfd, error_message); |
| 2731 | ||
| 2732 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2733 | if (TOCstart == 0) | |
| 1c865ab2 | 2734 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2735 | |
| 2736 | /* Subtract the TOC base address. */ | |
| 2737 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2738 | return bfd_reloc_continue; | |
| 2739 | } | |
| 2740 | ||
| 2741 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2742 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2743 | void *data, asection *input_section, | |
| 2744 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2745 | { |
| 2746 | bfd_vma TOCstart; | |
| 2747 | ||
| 2748 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2749 | call the generic function. Any adjustment will be done at final | |
| 2750 | link time. */ | |
| 2751 | if (output_bfd != NULL) | |
| cedb70c5 | 2752 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2753 | input_section, output_bfd, error_message); |
| 2754 | ||
| 2755 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2756 | if (TOCstart == 0) | |
| 1c865ab2 | 2757 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2758 | |
| 2759 | /* Subtract the TOC base address. */ | |
| 2760 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2761 | ||
| 2762 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2763 | reloc_entry->addend += 0x8000; | |
| 2764 | return bfd_reloc_continue; | |
| 2765 | } | |
| 2766 | ||
| 2767 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2768 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2769 | void *data, asection *input_section, | |
| 2770 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2771 | { |
| 2772 | bfd_vma TOCstart; | |
| 2773 | bfd_size_type octets; | |
| 2774 | ||
| 2775 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2776 | call the generic function. Any adjustment will be done at final | |
| 2777 | link time. */ | |
| 2778 | if (output_bfd != NULL) | |
| cedb70c5 | 2779 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2780 | input_section, output_bfd, error_message); |
| 2781 | ||
| 2782 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2783 | if (TOCstart == 0) | |
| 1c865ab2 | 2784 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2785 | |
| 2786 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2787 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2788 | return bfd_reloc_ok; | |
| 2789 | } | |
| 2790 | ||
| 2791 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2792 | ppc64_elf_unhandled_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2793 | void *data, asection *input_section, | |
| 2794 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2795 | { |
| 2796 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2797 | call the generic function. Any adjustment will be done at final | |
| 2798 | link time. */ | |
| 2799 | if (output_bfd != NULL) | |
| cedb70c5 | 2800 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2801 | input_section, output_bfd, error_message); |
| 2802 | ||
| 2803 | if (error_message != NULL) | |
| 2804 | { | |
| 2805 | static char buf[60]; | |
| 2806 | sprintf (buf, "generic linker can't handle %s", | |
| 2807 | reloc_entry->howto->name); | |
| 2808 | *error_message = buf; | |
| 2809 | } | |
| 2810 | return bfd_reloc_dangerous; | |
| 2811 | } | |
| 2812 | ||
| 927be08e AM |
2813 | /* Track GOT entries needed for a given symbol. We might need more |
| 2814 | than one got entry per symbol. */ | |
| 2815 | struct got_entry | |
| 2816 | { | |
| 2817 | struct got_entry *next; | |
| 2818 | ||
| 2819 | /* The symbol addend that we'll be placing in the GOT. */ | |
| 2820 | bfd_vma addend; | |
| 2821 | ||
| 2822 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
| 2823 | symbol referenced from different input files. This is to support | |
| 2824 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 2825 | from one input file to another. After partitioning into TOC groups | |
| 2826 | we merge entries within the group. | |
| 2827 | ||
| 2828 | Point to the BFD owning this GOT entry. */ | |
| 2829 | bfd *owner; | |
| 2830 | ||
| 2831 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 2832 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| f961d9dd | 2833 | unsigned char tls_type; |
| 927be08e AM |
2834 | |
| 2835 | /* Non-zero if got.ent points to real entry. */ | |
| f961d9dd | 2836 | unsigned char is_indirect; |
| 927be08e AM |
2837 | |
| 2838 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
| 2839 | union | |
| 2840 | { | |
| 2841 | bfd_signed_vma refcount; | |
| 2842 | bfd_vma offset; | |
| 2843 | struct got_entry *ent; | |
| 2844 | } got; | |
| 2845 | }; | |
| 2846 | ||
| 2847 | /* The same for PLT. */ | |
| 2848 | struct plt_entry | |
| 2849 | { | |
| 2850 | struct plt_entry *next; | |
| 2851 | ||
| 2852 | bfd_vma addend; | |
| 2853 | ||
| 2854 | union | |
| 2855 | { | |
| 2856 | bfd_signed_vma refcount; | |
| 2857 | bfd_vma offset; | |
| 2858 | } plt; | |
| 2859 | }; | |
| 2860 | ||
| e717da7e AM |
2861 | struct ppc64_elf_obj_tdata |
| 2862 | { | |
| 2863 | struct elf_obj_tdata elf; | |
| 2864 | ||
| 2865 | /* Shortcuts to dynamic linker sections. */ | |
| 2866 | asection *got; | |
| 2867 | asection *relgot; | |
| 2868 | ||
| b3fac117 AM |
2869 | /* Used during garbage collection. We attach global symbols defined |
| 2870 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2871 | asection *deleted_section; | |
| 81688140 | 2872 | |
| 927be08e | 2873 | /* TLS local dynamic got entry handling. Support for multiple GOT |
| e717da7e | 2874 | sections means we potentially need one of these for each input bfd. */ |
| 927be08e | 2875 | struct got_entry tlsld_got; |
| 8860955f | 2876 | |
| 729eabd5 AM |
2877 | union { |
| 2878 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2879 | Elf_Internal_Rela *relocs; | |
| 2880 | ||
| 2881 | /* Section contents. */ | |
| 2882 | bfd_byte *contents; | |
| 2883 | } opd; | |
| d77c8a4b AM |
2884 | |
| 2885 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
| 2886 | the reloc to be in the range -32768 to 32767. */ | |
| 98528052 AM |
2887 | unsigned int has_small_toc_reloc : 1; |
| 2888 | ||
| 560c8763 AM |
2889 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
| 2890 | instruction not one we handle. */ | |
| 2891 | unsigned int unexpected_toc_insn : 1; | |
| e717da7e AM |
2892 | }; |
| 2893 | ||
| 2894 | #define ppc64_elf_tdata(bfd) \ | |
| 2895 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2896 | ||
| 2897 | #define ppc64_tlsld_got(bfd) \ | |
| 2898 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2899 | ||
| 0c8d6e5c AM |
2900 | #define is_ppc64_elf(bfd) \ |
| 2901 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 4dfe6ac6 | 2902 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
| 0c8d6e5c | 2903 | |
| e717da7e AM |
2904 | /* Override the generic function because we store some extras. */ |
| 2905 | ||
| 2906 | static bfd_boolean | |
| 2907 | ppc64_elf_mkobject (bfd *abfd) | |
| 2908 | { | |
| 0ffa91dd | 2909 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 4dfe6ac6 | 2910 | PPC64_ELF_DATA); |
| e717da7e AM |
2911 | } |
| 2912 | ||
| feee612b | 2913 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 14b57c7c | 2914 | default is 32 bit. Also select arch based on apuinfo. */ |
| feee612b | 2915 | |
| b34976b6 | 2916 | static bfd_boolean |
| 4ce794b7 | 2917 | ppc64_elf_object_p (bfd *abfd) |
| feee612b | 2918 | { |
| 14b57c7c AM |
2919 | if (!abfd->arch_info->the_default) |
| 2920 | return TRUE; | |
| 2921 | ||
| 2922 | if (abfd->arch_info->bits_per_word == 32) | |
| feee612b AM |
2923 | { |
| 2924 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2925 | ||
| 2926 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2927 | { | |
| 2928 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2929 | abfd->arch_info = abfd->arch_info->next; | |
| 2930 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2931 | } | |
| 2932 | } | |
| 14b57c7c | 2933 | return _bfd_elf_ppc_set_arch (abfd); |
| feee612b AM |
2934 | } |
| 2935 | ||
| d37c89e5 AM |
2936 | /* Support for core dump NOTE sections. */ |
| 2937 | ||
| 2938 | static bfd_boolean | |
| 2939 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2940 | { | |
| eea6121a | 2941 | size_t offset, size; |
| d37c89e5 AM |
2942 | |
| 2943 | if (note->descsz != 504) | |
| 2944 | return FALSE; | |
| 2945 | ||
| 2946 | /* pr_cursig */ | |
| 228e534f | 2947 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| d37c89e5 AM |
2948 | |
| 2949 | /* pr_pid */ | |
| 228e534f | 2950 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| d37c89e5 AM |
2951 | |
| 2952 | /* pr_reg */ | |
| 2953 | offset = 112; | |
| eea6121a | 2954 | size = 384; |
| d37c89e5 AM |
2955 | |
| 2956 | /* Make a ".reg/999" section. */ | |
| 2957 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2958 | size, note->descpos + offset); |
| d37c89e5 AM |
2959 | } |
| 2960 | ||
| 2961 | static bfd_boolean | |
| 2962 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2963 | { | |
| 2964 | if (note->descsz != 136) | |
| 2965 | return FALSE; | |
| 2966 | ||
| 228e534f | 2967 | elf_tdata (abfd)->core->pid |
| bc989cdc | 2968 | = bfd_get_32 (abfd, note->descdata + 24); |
| 228e534f | 2969 | elf_tdata (abfd)->core->program |
| d37c89e5 | 2970 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 228e534f | 2971 | elf_tdata (abfd)->core->command |
| d37c89e5 AM |
2972 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2973 | ||
| 2974 | return TRUE; | |
| 2975 | } | |
| 2976 | ||
| 183e98be AM |
2977 | static char * |
| 2978 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2979 | ...) | |
| 2980 | { | |
| 2981 | switch (note_type) | |
| 2982 | { | |
| 2983 | default: | |
| 2984 | return NULL; | |
| 2985 | ||
| 2986 | case NT_PRPSINFO: | |
| 2987 | { | |
| 2988 | char data[136]; | |
| 2989 | va_list ap; | |
| 2990 | ||
| 2991 | va_start (ap, note_type); | |
| 75cd47ed | 2992 | memset (data, 0, sizeof (data)); |
| 183e98be AM |
2993 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 2994 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2995 | va_end (ap); | |
| 2996 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2997 | "CORE", note_type, data, sizeof (data)); | |
| 2998 | } | |
| 2999 | ||
| 3000 | case NT_PRSTATUS: | |
| 3001 | { | |
| 3002 | char data[504]; | |
| 3003 | va_list ap; | |
| 3004 | long pid; | |
| 3005 | int cursig; | |
| 3006 | const void *greg; | |
| 3007 | ||
| 3008 | va_start (ap, note_type); | |
| 3009 | memset (data, 0, 112); | |
| 3010 | pid = va_arg (ap, long); | |
| 3011 | bfd_put_32 (abfd, pid, data + 32); | |
| 3012 | cursig = va_arg (ap, int); | |
| 3013 | bfd_put_16 (abfd, cursig, data + 12); | |
| 3014 | greg = va_arg (ap, const void *); | |
| 3015 | memcpy (data + 112, greg, 384); | |
| 3016 | memset (data + 496, 0, 8); | |
| 3017 | va_end (ap); | |
| 3018 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 3019 | "CORE", note_type, data, sizeof (data)); | |
| 3020 | } | |
| 3021 | } | |
| 3022 | } | |
| 3023 | ||
| 5d35169e AM |
3024 | /* Add extra PPC sections. */ |
| 3025 | ||
| b35d266b | 3026 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 3027 | { |
| 0112cd26 NC |
3028 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 3029 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3030 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3031 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3032 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3033 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3034 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
3035 | }; |
| 3036 | ||
| 7c8fe5c4 AM |
3037 | enum _ppc64_sec_type { |
| 3038 | sec_normal = 0, | |
| 3039 | sec_opd = 1, | |
| 3040 | sec_toc = 2 | |
| 3041 | }; | |
| 3042 | ||
| f0abc2a1 AM |
3043 | struct _ppc64_elf_section_data |
| 3044 | { | |
| 3045 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 3046 | |
| f0abc2a1 AM |
3047 | union |
| 3048 | { | |
| 51aecdc5 AM |
3049 | /* An array with one entry for each opd function descriptor, |
| 3050 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
| 3051 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
| 74f0fb50 AM |
3052 | struct _opd_sec_data |
| 3053 | { | |
| 3054 | /* Points to the function code section for local opd entries. */ | |
| 3055 | asection **func_sec; | |
| 3056 | ||
| 3057 | /* After editing .opd, adjust references to opd local syms. */ | |
| 3058 | long *adjust; | |
| 3059 | } opd; | |
| 7c8fe5c4 | 3060 | |
| 3a71aa26 AM |
3061 | /* An array for toc sections, indexed by offset/8. */ |
| 3062 | struct _toc_sec_data | |
| 3063 | { | |
| 3064 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 3065 | unsigned *symndx; | |
| 3066 | ||
| 3067 | /* And the relocation addend. */ | |
| 3068 | bfd_vma *add; | |
| 3069 | } toc; | |
| 7c8fe5c4 AM |
3070 | } u; |
| 3071 | ||
| 3072 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 3073 | |
| 7c8fe5c4 AM |
3074 | /* Flag set when small branches are detected. Used to |
| 3075 | select suitable defaults for the stub group size. */ | |
| 3076 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
3077 | }; |
| 3078 | ||
| 3079 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 3080 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
3081 | |
| 3082 | static bfd_boolean | |
| 4ce794b7 | 3083 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 3084 | { |
| f592407e AM |
3085 | if (!sec->used_by_bfd) |
| 3086 | { | |
| 3087 | struct _ppc64_elf_section_data *sdata; | |
| 3088 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 3089 | |
| f592407e AM |
3090 | sdata = bfd_zalloc (abfd, amt); |
| 3091 | if (sdata == NULL) | |
| 3092 | return FALSE; | |
| 3093 | sec->used_by_bfd = sdata; | |
| 3094 | } | |
| f0abc2a1 AM |
3095 | |
| 3096 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 3097 | } | |
| 4025353c | 3098 | |
| 74f0fb50 | 3099 | static struct _opd_sec_data * |
| 4025353c AM |
3100 | get_opd_info (asection * sec) |
| 3101 | { | |
| 3102 | if (sec != NULL | |
| 3103 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 3104 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 3105 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
3106 | return NULL; |
| 3107 | } | |
| 90e3cdf2 JJ |
3108 | \f |
| 3109 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 | 3110 | static bfd_boolean synthetic_relocatable; |
| cd285db5 | 3111 | static asection *synthetic_opd; |
| 90e3cdf2 | 3112 | |
| 699733f6 | 3113 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
3114 | |
| 3115 | static int | |
| 3116 | compare_symbols (const void *ap, const void *bp) | |
| 3117 | { | |
| 3118 | const asymbol *a = * (const asymbol **) ap; | |
| 3119 | const asymbol *b = * (const asymbol **) bp; | |
| 3120 | ||
| 699733f6 AM |
3121 | /* Section symbols first. */ |
| 3122 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 3123 | return -1; |
| 699733f6 | 3124 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
3125 | return 1; |
| 3126 | ||
| 699733f6 | 3127 | /* then .opd symbols. */ |
| cd285db5 AM |
3128 | if (synthetic_opd != NULL) |
| 3129 | { | |
| 3130 | if (strcmp (a->section->name, ".opd") == 0 | |
| 3131 | && strcmp (b->section->name, ".opd") != 0) | |
| 3132 | return -1; | |
| 3133 | if (strcmp (a->section->name, ".opd") != 0 | |
| 3134 | && strcmp (b->section->name, ".opd") == 0) | |
| 3135 | return 1; | |
| 3136 | } | |
| 90e3cdf2 | 3137 | |
| 699733f6 | 3138 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
3139 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 3140 | == (SEC_CODE | SEC_ALLOC) | |
| 3141 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3142 | != (SEC_CODE | SEC_ALLOC)) | |
| 3143 | return -1; | |
| 3144 | ||
| 3145 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3146 | != (SEC_CODE | SEC_ALLOC) | |
| 3147 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3148 | == (SEC_CODE | SEC_ALLOC)) | |
| 3149 | return 1; | |
| 3150 | ||
| 3151 | if (synthetic_relocatable) | |
| 3152 | { | |
| 3153 | if (a->section->id < b->section->id) | |
| 3154 | return -1; | |
| 3155 | ||
| 3156 | if (a->section->id > b->section->id) | |
| 3157 | return 1; | |
| 3158 | } | |
| 3159 | ||
| 3160 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 3161 | return -1; | |
| 3162 | ||
| 3163 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 3164 | return 1; | |
| 3165 | ||
| 4d35a0aa AM |
3166 | /* For syms with the same value, prefer strong dynamic global function |
| 3167 | syms over other syms. */ | |
| 3168 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 3169 | return -1; | |
| 3170 | ||
| 3171 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 3172 | return 1; | |
| 3173 | ||
| 3174 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 3175 | return -1; | |
| 3176 | ||
| 3177 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 3178 | return 1; | |
| 3179 | ||
| 3180 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 3181 | return -1; | |
| 3182 | ||
| 3183 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 3184 | return 1; | |
| 3185 | ||
| 3186 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 3187 | return -1; | |
| 3188 | ||
| 3189 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 3190 | return 1; | |
| 3191 | ||
| aaed6f5b | 3192 | return a > b; |
| 90e3cdf2 JJ |
3193 | } |
| 3194 | ||
| 699733f6 | 3195 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 3196 | |
| 699733f6 | 3197 | static asymbol * |
| 7292b3ac | 3198 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
| 90e3cdf2 | 3199 | { |
| 699733f6 | 3200 | long mid; |
| 90e3cdf2 | 3201 | |
| 7292b3ac | 3202 | if (id == (unsigned) -1) |
| 699733f6 AM |
3203 | { |
| 3204 | while (lo < hi) | |
| 3205 | { | |
| 3206 | mid = (lo + hi) >> 1; | |
| 3207 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 3208 | lo = mid + 1; | |
| 3209 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 3210 | hi = mid; | |
| 3211 | else | |
| 3212 | return syms[mid]; | |
| 3213 | } | |
| 3214 | } | |
| 3215 | else | |
| 3216 | { | |
| 3217 | while (lo < hi) | |
| 3218 | { | |
| 3219 | mid = (lo + hi) >> 1; | |
| 3220 | if (syms[mid]->section->id < id) | |
| 3221 | lo = mid + 1; | |
| 3222 | else if (syms[mid]->section->id > id) | |
| 3223 | hi = mid; | |
| 3224 | else if (syms[mid]->value < value) | |
| 3225 | lo = mid + 1; | |
| 3226 | else if (syms[mid]->value > value) | |
| 3227 | hi = mid; | |
| 3228 | else | |
| 3229 | return syms[mid]; | |
| 3230 | } | |
| 3231 | } | |
| 3232 | return NULL; | |
| 90e3cdf2 JJ |
3233 | } |
| 3234 | ||
| 468392fb AM |
3235 | static bfd_boolean |
| 3236 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 3237 | { | |
| 3238 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 3239 | return ((section->flags & SEC_ALLOC) != 0 | |
| 3240 | && section->vma <= vma | |
| 3241 | && vma < section->vma + section->size); | |
| 3242 | } | |
| 3243 | ||
| 699733f6 | 3244 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| c4b0b099 AM |
3245 | entry syms. Also generate @plt symbols for the glink branch table. |
| 3246 | Returns count of synthetic symbols in RET or -1 on error. */ | |
| 90e3cdf2 JJ |
3247 | |
| 3248 | static long | |
| a7535cf3 AM |
3249 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 3250 | long static_count, asymbol **static_syms, | |
| 3251 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 3252 | asymbol **ret) |
| 90e3cdf2 JJ |
3253 | { |
| 3254 | asymbol *s; | |
| 699733f6 AM |
3255 | long i; |
| 3256 | long count; | |
| 90e3cdf2 | 3257 | char *names; |
| a7535cf3 | 3258 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| ee67d69a | 3259 | asection *opd = NULL; |
| 90e3cdf2 | 3260 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 3261 | asymbol **syms; |
| ee67d69a | 3262 | int abi = abiversion (abfd); |
| 90e3cdf2 JJ |
3263 | |
| 3264 | *ret = NULL; | |
| 3265 | ||
| ee67d69a AM |
3266 | if (abi < 2) |
| 3267 | { | |
| 3268 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 3269 | if (opd == NULL && abi == 1) | |
| 3270 | return 0; | |
| 3271 | } | |
| 90e3cdf2 | 3272 | |
| a7535cf3 | 3273 | symcount = static_count; |
| c9727e01 | 3274 | if (!relocatable) |
| a7535cf3 | 3275 | symcount += dyn_count; |
| 90e3cdf2 | 3276 | if (symcount == 0) |
| c9727e01 | 3277 | return 0; |
| 90e3cdf2 | 3278 | |
| a7535cf3 AM |
3279 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 3280 | if (syms == NULL) | |
| 7356fed5 | 3281 | return -1; |
| a7535cf3 AM |
3282 | |
| 3283 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 3284 | { | |
| 3285 | /* Use both symbol tables. */ | |
| 3286 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 3287 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 3288 | } | |
| 3289 | else if (!relocatable && static_count == 0) | |
| 3290 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 3291 | else | |
| 3292 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 3293 | ||
| 90e3cdf2 | 3294 | synthetic_relocatable = relocatable; |
| cd285db5 | 3295 | synthetic_opd = opd; |
| 595da8c5 | 3296 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 3297 | |
| c9727e01 AM |
3298 | if (!relocatable && symcount > 1) |
| 3299 | { | |
| 3300 | long j; | |
| 3301 | /* Trim duplicate syms, since we may have merged the normal and | |
| 3302 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 3303 | different values, so trim any with the same value. */ |
| c9727e01 AM |
3304 | for (i = 1, j = 1; i < symcount; ++i) |
| 3305 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 3306 | != syms[i]->value + syms[i]->section->vma) | |
| 3307 | syms[j++] = syms[i]; | |
| 3308 | symcount = j; | |
| 3309 | } | |
| 3310 | ||
| 699733f6 | 3311 | i = 0; |
| cd285db5 AM |
3312 | /* Note that here and in compare_symbols we can't compare opd and |
| 3313 | sym->section directly. With separate debug info files, the | |
| 3314 | symbols will be extracted from the debug file while abfd passed | |
| 3315 | to this function is the real binary. */ | |
| 3316 | if (opd != NULL && strcmp (syms[i]->section->name, ".opd") == 0) | |
| 699733f6 AM |
3317 | ++i; |
| 3318 | codesecsym = i; | |
| 90e3cdf2 | 3319 | |
| 699733f6 AM |
3320 | for (; i < symcount; ++i) |
| 3321 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3322 | != (SEC_CODE | SEC_ALLOC)) | |
| 3323 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3324 | break; | |
| 3325 | codesecsymend = i; | |
| 90e3cdf2 | 3326 | |
| 699733f6 AM |
3327 | for (; i < symcount; ++i) |
| 3328 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3329 | break; | |
| 3330 | secsymend = i; | |
| 90e3cdf2 | 3331 | |
| cd285db5 AM |
3332 | if (opd != NULL) |
| 3333 | for (; i < symcount; ++i) | |
| 3334 | if (strcmp (syms[i]->section->name, ".opd") != 0) | |
| 3335 | break; | |
| 699733f6 | 3336 | opdsymend = i; |
| 90e3cdf2 | 3337 | |
| 699733f6 AM |
3338 | for (; i < symcount; ++i) |
| 3339 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3340 | != (SEC_CODE | SEC_ALLOC)) | |
| 3341 | break; | |
| 3342 | symcount = i; | |
| 3343 | ||
| c9727e01 | 3344 | count = 0; |
| 90e3cdf2 | 3345 | |
| 699733f6 | 3346 | if (relocatable) |
| 90e3cdf2 | 3347 | { |
| 699733f6 AM |
3348 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3349 | arelent *r; | |
| 3350 | size_t size; | |
| 3351 | long relcount; | |
| 90e3cdf2 | 3352 | |
| 468392fb AM |
3353 | if (opdsymend == secsymend) |
| 3354 | goto done; | |
| 3355 | ||
| 699733f6 | 3356 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3357 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3358 | if (relcount == 0) |
| c9727e01 | 3359 | goto done; |
| 90e3cdf2 | 3360 | |
| 7356fed5 AM |
3361 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3362 | { | |
| 3363 | count = -1; | |
| 3364 | goto done; | |
| 3365 | } | |
| 3366 | ||
| 699733f6 | 3367 | size = 0; |
| 595da8c5 | 3368 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3369 | { |
| 3370 | asymbol *sym; | |
| 90e3cdf2 | 3371 | |
| 595da8c5 | 3372 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3373 | && r->address < syms[i]->value + opd->vma) |
| 3374 | ++r; | |
| 90e3cdf2 | 3375 | |
| 595da8c5 | 3376 | if (r == opd->relocation + relcount) |
| 699733f6 | 3377 | break; |
| 90e3cdf2 | 3378 | |
| 699733f6 AM |
3379 | if (r->address != syms[i]->value + opd->vma) |
| 3380 | continue; | |
| 90e3cdf2 | 3381 | |
| 699733f6 AM |
3382 | if (r->howto->type != R_PPC64_ADDR64) |
| 3383 | continue; | |
| 90e3cdf2 | 3384 | |
| 699733f6 AM |
3385 | sym = *r->sym_ptr_ptr; |
| 3386 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3387 | sym->section->id, sym->value + r->addend)) | |
| 3388 | { | |
| 3389 | ++count; | |
| 3390 | size += sizeof (asymbol); | |
| 3391 | size += strlen (syms[i]->name) + 2; | |
| 3392 | } | |
| 3393 | } | |
| 90e3cdf2 | 3394 | |
| c4b0b099 AM |
3395 | if (size == 0) |
| 3396 | goto done; | |
| 699733f6 AM |
3397 | s = *ret = bfd_malloc (size); |
| 3398 | if (s == NULL) | |
| 3399 | { | |
| 7356fed5 | 3400 | count = -1; |
| c9727e01 | 3401 | goto done; |
| 699733f6 | 3402 | } |
| 90e3cdf2 | 3403 | |
| 699733f6 | 3404 | names = (char *) (s + count); |
| 90e3cdf2 | 3405 | |
| 595da8c5 | 3406 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3407 | { |
| 699733f6 | 3408 | asymbol *sym; |
| 90e3cdf2 | 3409 | |
| 595da8c5 | 3410 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3411 | && r->address < syms[i]->value + opd->vma) |
| 3412 | ++r; | |
| 90e3cdf2 | 3413 | |
| 595da8c5 | 3414 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3415 | break; |
| 3416 | ||
| 3417 | if (r->address != syms[i]->value + opd->vma) | |
| 3418 | continue; | |
| 3419 | ||
| 3420 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3421 | continue; | |
| 90e3cdf2 | 3422 | |
| 699733f6 AM |
3423 | sym = *r->sym_ptr_ptr; |
| 3424 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3425 | sym->section->id, sym->value + r->addend)) | |
| 3426 | { | |
| 3427 | size_t len; | |
| 3428 | ||
| 3429 | *s = *syms[i]; | |
| 6ba2a415 | 3430 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3431 | s->section = sym->section; |
| 3432 | s->value = sym->value + r->addend; | |
| 3433 | s->name = names; | |
| 3434 | *names++ = '.'; | |
| 3435 | len = strlen (syms[i]->name); | |
| 3436 | memcpy (names, syms[i]->name, len + 1); | |
| 3437 | names += len + 1; | |
| 6f610d07 UW |
3438 | /* Have udata.p point back to the original symbol this |
| 3439 | synthetic symbol was derived from. */ | |
| 3440 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3441 | s++; |
| 3442 | } | |
| 3443 | } | |
| 3444 | } | |
| 3445 | else | |
| 90e3cdf2 | 3446 | { |
| 468392fb | 3447 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| ee67d69a | 3448 | bfd_byte *contents = NULL; |
| 699733f6 | 3449 | size_t size; |
| 468392fb AM |
3450 | long plt_count = 0; |
| 3451 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3452 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3453 | arelent *p; | |
| 90e3cdf2 | 3454 | |
| ee67d69a | 3455 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 699733f6 | 3456 | { |
| c4b0b099 AM |
3457 | free_contents_and_exit_err: |
| 3458 | count = -1; | |
| ee67d69a | 3459 | free_contents_and_exit: |
| 699733f6 | 3460 | if (contents) |
| ee67d69a | 3461 | free (contents); |
| c9727e01 | 3462 | goto done; |
| 699733f6 | 3463 | } |
| 90e3cdf2 | 3464 | |
| 699733f6 AM |
3465 | size = 0; |
| 3466 | for (i = secsymend; i < opdsymend; ++i) | |
| 3467 | { | |
| 3468 | bfd_vma ent; | |
| 90e3cdf2 | 3469 | |
| 5ef11c02 AM |
3470 | /* Ignore bogus symbols. */ |
| 3471 | if (syms[i]->value > opd->size - 8) | |
| 3472 | continue; | |
| 3473 | ||
| 699733f6 AM |
3474 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3475 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3476 | { | |
| 3477 | ++count; | |
| 3478 | size += sizeof (asymbol); | |
| 3479 | size += strlen (syms[i]->name) + 2; | |
| 3480 | } | |
| 3481 | } | |
| 90e3cdf2 | 3482 | |
| 468392fb | 3483 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3484 | if (dyn_count != 0 |
| 3485 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3486 | { |
| 3487 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3488 | size_t extdynsize; | |
| 3489 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3490 | ||
| 3491 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| c4b0b099 | 3492 | goto free_contents_and_exit_err; |
| 468392fb AM |
3493 | |
| 3494 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3495 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3496 | ||
| 3497 | extdyn = dynbuf; | |
| 3498 | extdynend = extdyn + dynamic->size; | |
| 3499 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3500 | { | |
| 3501 | Elf_Internal_Dyn dyn; | |
| 3502 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3503 | ||
| 3504 | if (dyn.d_tag == DT_NULL) | |
| 3505 | break; | |
| 3506 | ||
| 3507 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3508 | { | |
| b9e5796b AM |
3509 | /* The first glink stub starts at offset 32; see |
| 3510 | comment in ppc64_elf_finish_dynamic_sections. */ | |
| 3511 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
| 468392fb AM |
3512 | /* The .glink section usually does not survive the final |
| 3513 | link; search for the section (usually .text) where the | |
| 3514 | glink stubs now reside. */ | |
| 3515 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3516 | &glink_vma); | |
| 3517 | break; | |
| 3518 | } | |
| 3519 | } | |
| 3520 | ||
| 3521 | free (dynbuf); | |
| 3522 | } | |
| 3523 | ||
| 3524 | if (glink != NULL) | |
| 3525 | { | |
| 3526 | /* Determine __glink trampoline by reading the relative branch | |
| 3527 | from the first glink stub. */ | |
| 3528 | bfd_byte buf[4]; | |
| b9e5796b AM |
3529 | unsigned int off = 0; |
| 3530 | ||
| 3531 | while (bfd_get_section_contents (abfd, glink, buf, | |
| 3532 | glink_vma + off - glink->vma, 4)) | |
| 468392fb AM |
3533 | { |
| 3534 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3535 | insn ^= B_DOT; | |
| 3536 | if ((insn & ~0x3fffffc) == 0) | |
| b9e5796b AM |
3537 | { |
| 3538 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
| 3539 | break; | |
| 3540 | } | |
| 3541 | off += 4; | |
| 3542 | if (off > 4) | |
| 3543 | break; | |
| 468392fb AM |
3544 | } |
| 3545 | ||
| 3546 | if (resolv_vma) | |
| 3547 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3548 | |
| 066ee829 AM |
3549 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3550 | if (relplt != NULL) | |
| 3551 | { | |
| 3552 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3553 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| c4b0b099 | 3554 | goto free_contents_and_exit_err; |
| 68ffbac6 | 3555 | |
| 066ee829 AM |
3556 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3557 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3558 | |
| 066ee829 AM |
3559 | p = relplt->relocation; |
| 3560 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3561 | { |
| 3562 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3563 | if (p->addend != 0) | |
| 3564 | size += sizeof ("+0x") - 1 + 16; | |
| 3565 | } | |
| 066ee829 | 3566 | } |
| 468392fb AM |
3567 | } |
| 3568 | ||
| c4b0b099 AM |
3569 | if (size == 0) |
| 3570 | goto free_contents_and_exit; | |
| 699733f6 AM |
3571 | s = *ret = bfd_malloc (size); |
| 3572 | if (s == NULL) | |
| c4b0b099 | 3573 | goto free_contents_and_exit_err; |
| 90e3cdf2 | 3574 | |
| 468392fb | 3575 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3576 | |
| 699733f6 | 3577 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3578 | { |
| 699733f6 | 3579 | bfd_vma ent; |
| 90e3cdf2 | 3580 | |
| 5ef11c02 AM |
3581 | if (syms[i]->value > opd->size - 8) |
| 3582 | continue; | |
| 3583 | ||
| 699733f6 AM |
3584 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3585 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3586 | { |
| c9727e01 | 3587 | long lo, hi; |
| 699733f6 | 3588 | size_t len; |
| c9727e01 | 3589 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3590 | |
| 699733f6 AM |
3591 | *s = *syms[i]; |
| 3592 | lo = codesecsym; | |
| 3593 | hi = codesecsymend; | |
| 3594 | while (lo < hi) | |
| 3595 | { | |
| c9727e01 | 3596 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3597 | if (syms[mid]->section->vma < ent) |
| 3598 | lo = mid + 1; | |
| 3599 | else if (syms[mid]->section->vma > ent) | |
| 3600 | hi = mid; | |
| 3601 | else | |
| c9727e01 AM |
3602 | { |
| 3603 | sec = syms[mid]->section; | |
| 3604 | break; | |
| 3605 | } | |
| 699733f6 AM |
3606 | } |
| 3607 | ||
| c9727e01 | 3608 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3609 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3610 | |
| 3611 | for (; sec != NULL; sec = sec->next) | |
| 3612 | { | |
| 3613 | if (sec->vma > ent) | |
| 3614 | break; | |
| 63524580 JK |
3615 | /* SEC_LOAD may not be set if SEC is from a separate debug |
| 3616 | info file. */ | |
| 3617 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 699733f6 AM |
3618 | break; |
| 3619 | if ((sec->flags & SEC_CODE) != 0) | |
| 3620 | s->section = sec; | |
| 3621 | } | |
| 6ba2a415 | 3622 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3623 | s->value = ent - s->section->vma; |
| 3624 | s->name = names; | |
| 3625 | *names++ = '.'; | |
| 3626 | len = strlen (syms[i]->name); | |
| 3627 | memcpy (names, syms[i]->name, len + 1); | |
| 3628 | names += len + 1; | |
| 6f610d07 UW |
3629 | /* Have udata.p point back to the original symbol this |
| 3630 | synthetic symbol was derived from. */ | |
| 3631 | s->udata.p = syms[i]; | |
| 699733f6 | 3632 | s++; |
| 90e3cdf2 | 3633 | } |
| 90e3cdf2 | 3634 | } |
| 699733f6 | 3635 | free (contents); |
| 468392fb AM |
3636 | |
| 3637 | if (glink != NULL && relplt != NULL) | |
| 3638 | { | |
| 3639 | if (resolv_vma) | |
| 3640 | { | |
| 3641 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3642 | memset (s, 0, sizeof *s); |
| 468392fb | 3643 | s->the_bfd = abfd; |
| 6ba2a415 | 3644 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3645 | s->section = glink; |
| 3646 | s->value = resolv_vma - glink->vma; | |
| 3647 | s->name = names; | |
| 3648 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3649 | names += sizeof ("__glink_PLTresolve"); | |
| 3650 | s++; | |
| 3651 | count++; | |
| 3652 | } | |
| 3653 | ||
| 3654 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3655 | stub rather than on the glink branch table entry. The | |
| 3656 | objdump disassembler would then use a sensible symbol | |
| 3657 | name on plt calls. The difficulty in doing so is | |
| 3658 | a) finding the stubs, and, | |
| 3659 | b) matching stubs against plt entries, and, | |
| 3660 | c) there can be multiple stubs for a given plt entry. | |
| 3661 | ||
| 3662 | Solving (a) could be done by code scanning, but older | |
| 3663 | ppc64 binaries used different stubs to current code. | |
| 3664 | (b) is the tricky one since you need to known the toc | |
| 3665 | pointer for at least one function that uses a pic stub to | |
| 3666 | be able to calculate the plt address referenced. | |
| 3667 | (c) means gdb would need to set multiple breakpoints (or | |
| 3668 | find the glink branch itself) when setting breakpoints | |
| 3669 | for pending shared library loads. */ | |
| 3670 | p = relplt->relocation; | |
| 3671 | for (i = 0; i < plt_count; i++, p++) | |
| 3672 | { | |
| 3673 | size_t len; | |
| 3674 | ||
| 3675 | *s = **p->sym_ptr_ptr; | |
| 3676 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3677 | we are defining a symbol, ensure one of them is set. */ | |
| 3678 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3679 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3680 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3681 | s->section = glink; |
| 3682 | s->value = glink_vma - glink->vma; | |
| 3683 | s->name = names; | |
| 3684 | s->udata.p = NULL; | |
| 3685 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3686 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3687 | names += len; | |
| e054468f AM |
3688 | if (p->addend != 0) |
| 3689 | { | |
| 3690 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3691 | names += sizeof ("+0x") - 1; | |
| 3692 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3693 | names += strlen (names); | |
| 3694 | } | |
| 468392fb AM |
3695 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3696 | names += sizeof ("@plt"); | |
| 3697 | s++; | |
| b9e5796b AM |
3698 | if (abi < 2) |
| 3699 | { | |
| 3700 | glink_vma += 8; | |
| 3701 | if (i >= 0x8000) | |
| 3702 | glink_vma += 4; | |
| 3703 | } | |
| 3704 | else | |
| 468392fb AM |
3705 | glink_vma += 4; |
| 3706 | } | |
| 3707 | count += plt_count; | |
| 3708 | } | |
| 90e3cdf2 JJ |
3709 | } |
| 3710 | ||
| c9727e01 | 3711 | done: |
| a7535cf3 | 3712 | free (syms); |
| 90e3cdf2 JJ |
3713 | return count; |
| 3714 | } | |
| 5bd4f169 | 3715 | \f |
| 65f38f15 AM |
3716 | /* The following functions are specific to the ELF linker, while |
| 3717 | functions above are used generally. Those named ppc64_elf_* are | |
| 3718 | called by the main ELF linker code. They appear in this file more | |
| 3719 | or less in the order in which they are called. eg. | |
| 3720 | ppc64_elf_check_relocs is called early in the link process, | |
| 3721 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3722 | called. |
| 3723 | ||
| 3724 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3725 | functions have both a function code symbol and a function descriptor | |
| 3726 | symbol. A call to foo in a relocatable object file looks like: | |
| 3727 | ||
| 3728 | . .text | |
| 3729 | . x: | |
| 3730 | . bl .foo | |
| 3731 | . nop | |
| 3732 | ||
| 3733 | The function definition in another object file might be: | |
| 3734 | ||
| 3735 | . .section .opd | |
| 3736 | . foo: .quad .foo | |
| 3737 | . .quad .TOC.@tocbase | |
| 3738 | . .quad 0 | |
| 3739 | . | |
| 3740 | . .text | |
| 3741 | . .foo: blr | |
| 3742 | ||
| 3743 | When the linker resolves the call during a static link, the branch | |
| 3744 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3745 | If the function definition is in a shared library, things are a little | |
| 3746 | different: The call goes via a plt call stub, the opd information gets | |
| 3747 | copied to the plt, and the linker patches the nop. | |
| 3748 | ||
| 3749 | . x: | |
| 3750 | . bl .foo_stub | |
| 3751 | . ld 2,40(1) | |
| 3752 | . | |
| 3753 | . | |
| 3754 | . .foo_stub: | |
| 71a39c98 AM |
3755 | . std 2,40(1) # in practice, the call stub |
| 3756 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
| 3757 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
| 3758 | . ld 12,0(11) | |
| 3759 | . ld 2,8(11) | |
| 3760 | . mtctr 12 | |
| 3761 | . ld 11,16(11) | |
| e86ce104 AM |
3762 | . bctr |
| 3763 | . | |
| 3764 | . .section .plt | |
| 3765 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3766 | ||
| 3767 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3768 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3769 | copying. | |
| 3770 | ||
| 3771 | What are the difficulties here? Well, firstly, the relocations | |
| 3772 | examined by the linker in check_relocs are against the function code | |
| 3773 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3774 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3775 | to carefully copy dynamic link information from one symbol to the other. | |
| 3776 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3777 | symbol as is normal for most other backends. We need foo dynamic | |
| 3778 | instead, at least for an application final link. However, when | |
| 3779 | creating a shared library containing foo, we need to have both symbols | |
| 3780 | dynamic so that references to .foo are satisfied during the early | |
| 3781 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3782 | definition from some other object, eg. a static library. |
| 3783 | ||
| 3784 | Update: As of August 2004, we support a new convention. Function | |
| 3785 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3786 | behaves exactly as "bl .foo". */ | |
| 65f38f15 | 3787 | |
| 1d483afe | 3788 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3789 | selects those that must be copied when linking a shared library, |
| 3790 | even when the symbol is local. */ | |
| 65f38f15 | 3791 | |
| 1d483afe AM |
3792 | static int |
| 3793 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3794 | enum elf_ppc64_reloc_type r_type) | |
| 3795 | { | |
| 3796 | switch (r_type) | |
| 3797 | { | |
| 3798 | default: | |
| 3799 | return 1; | |
| 3800 | ||
| 3801 | case R_PPC64_REL32: | |
| 3802 | case R_PPC64_REL64: | |
| 3803 | case R_PPC64_REL30: | |
| 3804 | return 0; | |
| 3805 | ||
| 3806 | case R_PPC64_TPREL16: | |
| 3807 | case R_PPC64_TPREL16_LO: | |
| 3808 | case R_PPC64_TPREL16_HI: | |
| 3809 | case R_PPC64_TPREL16_HA: | |
| 3810 | case R_PPC64_TPREL16_DS: | |
| 3811 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
3812 | case R_PPC64_TPREL16_HIGH: |
| 3813 | case R_PPC64_TPREL16_HIGHA: | |
| 1d483afe AM |
3814 | case R_PPC64_TPREL16_HIGHER: |
| 3815 | case R_PPC64_TPREL16_HIGHERA: | |
| 3816 | case R_PPC64_TPREL16_HIGHEST: | |
| 3817 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3818 | case R_PPC64_TPREL64: | |
| 0e1862bb | 3819 | return !bfd_link_executable (info); |
| 1d483afe AM |
3820 | } |
| 3821 | } | |
| 65f38f15 | 3822 | |
| 21d68fcd AM |
3823 | /* Whether an undefined weak symbol should resolve to its link-time |
| 3824 | value, even in PIC or PIE objects. */ | |
| 3825 | #define UNDEFWEAK_NO_DYNAMIC_RELOC(INFO, H) \ | |
| 3826 | ((H)->root.type == bfd_link_hash_undefweak \ | |
| 3827 | && (ELF_ST_VISIBILITY ((H)->other) != STV_DEFAULT \ | |
| 3828 | || (INFO)->dynamic_undefined_weak == 0)) | |
| 3829 | ||
| f4656909 AM |
3830 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3831 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3832 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3833 | shared lib. With code that gcc generates, it's vital that this be |
| 3834 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3835 | the address of a function descriptor, which resides in the .opd | |
| 3836 | section. gcc uses the descriptor directly rather than going via the | |
| 3837 | GOT as some other ABI's do, which means that initialized function | |
| 3838 | pointers must reference the descriptor. Thus, a function pointer | |
| 3839 | initialized to the address of a function in a shared library will | |
| 3840 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3841 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3842 | presents a problem as a plt entry for that function is also |
| 3843 | initialized from the function descriptor symbol and the copy reloc | |
| 3844 | may not be initialized first. */ | |
| a23b6845 | 3845 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3846 | |
| 721956f4 | 3847 | /* Section name for stubs is the associated section name plus this |
| 29942be8 NC |
3848 | string. */ |
| 3849 | #define STUB_SUFFIX ".stub" | |
| 721956f4 AM |
3850 | |
| 3851 | /* Linker stubs. | |
| 3852 | ppc_stub_long_branch: | |
| 3853 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3854 | destination, but a 24 bit branch in a stub section will reach. | |
| 3855 | . b dest | |
| 3856 | ||
| 3857 | ppc_stub_plt_branch: | |
| 3858 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3859 | reach its destination. | |
| 71a39c98 AM |
3860 | . addis %r11,%r2,xxx@toc@ha |
| 3861 | . ld %r12,xxx@toc@l(%r11) | |
| 3862 | . mtctr %r12 | |
| 721956f4 AM |
3863 | . bctr |
| 3864 | ||
| 3865 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3866 | Used to call a function in a shared library. If it so happens that |
| 3867 | the plt entry referenced crosses a 64k boundary, then an extra | |
| 71a39c98 | 3868 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
| 721956f4 | 3869 | . std %r2,40(%r1) |
| 71a39c98 AM |
3870 | . addis %r11,%r2,xxx@toc@ha |
| 3871 | . ld %r12,xxx+0@toc@l(%r11) | |
| 3872 | . mtctr %r12 | |
| 3873 | . ld %r2,xxx+8@toc@l(%r11) | |
| 3874 | . ld %r11,xxx+16@toc@l(%r11) | |
| 721956f4 | 3875 | . bctr |
| ad8e1ba5 AM |
3876 | |
| 3877 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3878 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3879 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3880 | . std %r2,40(%r1) | |
| 3881 | . addis %r2,%r2,off@ha | |
| 3882 | . addi %r2,%r2,off@l | |
| 3883 | . b dest | |
| 3884 | ||
| 3885 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3886 | . std %r2,40(%r1) | |
| 71a39c98 AM |
3887 | . addis %r11,%r2,xxx@toc@ha |
| 3888 | . ld %r12,xxx@toc@l(%r11) | |
| ad8e1ba5 AM |
3889 | . addis %r2,%r2,off@ha |
| 3890 | . addi %r2,%r2,off@l | |
| 71a39c98 | 3891 | . mtctr %r12 |
| ad8e1ba5 | 3892 | . bctr |
| ac2df442 AM |
3893 | |
| 3894 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3895 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3896 | */ |
| 3897 | ||
| 3898 | enum ppc_stub_type { | |
| 3899 | ppc_stub_none, | |
| 3900 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3901 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3902 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3903 | ppc_stub_plt_branch_r2off, |
| 794e51c0 | 3904 | ppc_stub_plt_call, |
| 7341d5e2 | 3905 | ppc_stub_plt_call_r2save, |
| a4b6fadd AM |
3906 | ppc_stub_global_entry, |
| 3907 | ppc_stub_save_res | |
| 721956f4 AM |
3908 | }; |
| 3909 | ||
| 6f20ed8a AM |
3910 | /* Information on stub grouping. */ |
| 3911 | struct map_stub | |
| 3912 | { | |
| 3913 | /* The stub section. */ | |
| 3914 | asection *stub_sec; | |
| 3915 | /* This is the section to which stubs in the group will be attached. */ | |
| 3916 | asection *link_sec; | |
| a4b6fadd AM |
3917 | /* Next group. */ |
| 3918 | struct map_stub *next; | |
| 3919 | /* Whether to emit a copy of register save/restore functions in this | |
| 3920 | group. */ | |
| 3921 | int needs_save_res; | |
| 6f20ed8a AM |
3922 | }; |
| 3923 | ||
| 721956f4 AM |
3924 | struct ppc_stub_hash_entry { |
| 3925 | ||
| 3926 | /* Base hash table entry structure. */ | |
| 3927 | struct bfd_hash_entry root; | |
| 3928 | ||
| ad8e1ba5 AM |
3929 | enum ppc_stub_type stub_type; |
| 3930 | ||
| 6f20ed8a AM |
3931 | /* Group information. */ |
| 3932 | struct map_stub *group; | |
| 721956f4 AM |
3933 | |
| 3934 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3935 | bfd_vma stub_offset; | |
| 3936 | ||
| 3937 | /* Given the symbol's value and its section we can determine its final | |
| 3938 | value when building the stubs (so the stub knows where to jump. */ | |
| 3939 | bfd_vma target_value; | |
| 3940 | asection *target_section; | |
| 3941 | ||
| 721956f4 AM |
3942 | /* The symbol table entry, if any, that this was derived from. */ |
| 3943 | struct ppc_link_hash_entry *h; | |
| e054468f | 3944 | struct plt_entry *plt_ent; |
| 721956f4 | 3945 | |
| 6911b7dc AM |
3946 | /* Symbol st_other. */ |
| 3947 | unsigned char other; | |
| 721956f4 AM |
3948 | }; |
| 3949 | ||
| 3950 | struct ppc_branch_hash_entry { | |
| 3951 | ||
| 3952 | /* Base hash table entry structure. */ | |
| 3953 | struct bfd_hash_entry root; | |
| 3954 | ||
| c456f082 | 3955 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3956 | unsigned int offset; |
| 3957 | ||
| 3958 | /* Generation marker. */ | |
| 3959 | unsigned int iter; | |
| 3960 | }; | |
| 65f38f15 | 3961 | |
| 19e08130 AM |
3962 | /* Used to track dynamic relocations for local symbols. */ |
| 3963 | struct ppc_dyn_relocs | |
| 3964 | { | |
| 3965 | struct ppc_dyn_relocs *next; | |
| 3966 | ||
| 3967 | /* The input section of the reloc. */ | |
| 3968 | asection *sec; | |
| 3969 | ||
| 3970 | /* Total number of relocs copied for the input section. */ | |
| 3971 | unsigned int count : 31; | |
| 3972 | ||
| 3973 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
| 3974 | unsigned int ifunc : 1; | |
| 3975 | }; | |
| 3976 | ||
| 65f38f15 AM |
3977 | struct ppc_link_hash_entry |
| 3978 | { | |
| 3979 | struct elf_link_hash_entry elf; | |
| 3980 | ||
| b3fac117 AM |
3981 | union { |
| 3982 | /* A pointer to the most recently used stub hash entry against this | |
| 3983 | symbol. */ | |
| 3984 | struct ppc_stub_hash_entry *stub_cache; | |
| 3985 | ||
| 3986 | /* A pointer to the next symbol starting with a '.' */ | |
| 3987 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3988 | } u; | |
| 721956f4 | 3989 | |
| 65f38f15 | 3990 | /* Track dynamic relocs copied for this symbol. */ |
| 6061a67d | 3991 | struct elf_dyn_relocs *dyn_relocs; |
| e86ce104 | 3992 | |
| d311bc8b AM |
3993 | /* Chain of aliases referring to a weakdef. */ |
| 3994 | struct ppc_link_hash_entry *weakref; | |
| 3995 | ||
| 721956f4 | 3996 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3997 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3998 | |
| e86ce104 AM |
3999 | /* Flag function code and descriptor symbols. */ |
| 4000 | unsigned int is_func:1; | |
| 4001 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 4002 | unsigned int fake:1; |
| 411e1bfb | 4003 | |
| c5614fa4 AM |
4004 | /* Whether global opd/toc sym has been adjusted or not. |
| 4005 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 4006 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
4007 | unsigned int adjust_done:1; |
| 4008 | ||
| a4b6fadd AM |
4009 | /* Set if this is an out-of-line register save/restore function, |
| 4010 | with non-standard calling convention. */ | |
| 4011 | unsigned int save_res:1; | |
| 4012 | ||
| 411e1bfb | 4013 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
4014 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 4015 | corresponding relocs are encountered during check_relocs. | |
| 4016 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 4017 | indicate the corresponding GOT entry type is not needed. | |
| 4018 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 4019 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 4020 | just for convenience in distinguishing the two cases. */ | |
| 4021 | #define TLS_GD 1 /* GD reloc. */ | |
| 4022 | #define TLS_LD 2 /* LD reloc. */ | |
| 4023 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 4024 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 4025 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 4026 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 4027 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 4028 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| f961d9dd | 4029 | unsigned char tls_mask; |
| 65f38f15 AM |
4030 | }; |
| 4031 | ||
| 4032 | /* ppc64 ELF linker hash table. */ | |
| 4033 | ||
| 4034 | struct ppc_link_hash_table | |
| 4035 | { | |
| 4036 | struct elf_link_hash_table elf; | |
| 4037 | ||
| 721956f4 AM |
4038 | /* The stub hash table. */ |
| 4039 | struct bfd_hash_table stub_hash_table; | |
| 4040 | ||
| 4041 | /* Another hash table for plt_branch stubs. */ | |
| 4042 | struct bfd_hash_table branch_hash_table; | |
| 4043 | ||
| 3b421ab3 AM |
4044 | /* Hash table for function prologue tocsave. */ |
| 4045 | htab_t tocsave_htab; | |
| 4046 | ||
| e7d1c40c AM |
4047 | /* Various options and other info passed from the linker. */ |
| 4048 | struct ppc64_elf_params *params; | |
| 721956f4 | 4049 | |
| 6f20ed8a AM |
4050 | /* The size of sec_info below. */ |
| 4051 | unsigned int sec_info_arr_size; | |
| 4052 | ||
| 4053 | /* Per-section array of extra section info. Done this way rather | |
| 4054 | than as part of ppc64_elf_section_data so we have the info for | |
| 4055 | non-ppc64 sections. */ | |
| 4056 | struct | |
| 4057 | { | |
| 4058 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
| ad8e1ba5 | 4059 | bfd_vma toc_off; |
| 6f20ed8a AM |
4060 | |
| 4061 | union | |
| 4062 | { | |
| 4063 | /* The section group that this section belongs to. */ | |
| 4064 | struct map_stub *group; | |
| 4065 | /* A temp section list pointer. */ | |
| 4066 | asection *list; | |
| 4067 | } u; | |
| 4068 | } *sec_info; | |
| 721956f4 | 4069 | |
| a4b6fadd AM |
4070 | /* Linked list of groups. */ |
| 4071 | struct map_stub *group; | |
| 4072 | ||
| ad8e1ba5 AM |
4073 | /* Temp used when calculating TOC pointers. */ |
| 4074 | bfd_vma toc_curr; | |
| bf102f86 AM |
4075 | bfd *toc_bfd; |
| 4076 | asection *toc_first_sec; | |
| ad8e1ba5 | 4077 | |
| b3fac117 AM |
4078 | /* Used when adding symbols. */ |
| 4079 | struct ppc_link_hash_entry *dot_syms; | |
| 4080 | ||
| 33e44f2e | 4081 | /* Shortcuts to get to dynamic linker sections. */ |
| 4ce794b7 | 4082 | asection *glink; |
| 82bd7b59 | 4083 | asection *sfpr; |
| 4ce794b7 AM |
4084 | asection *brlt; |
| 4085 | asection *relbrlt; | |
| 58d180e8 | 4086 | asection *glink_eh_frame; |
| ec338859 | 4087 | |
| 8387904d AM |
4088 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 4089 | struct ppc_link_hash_entry *tls_get_addr; | |
| 4090 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 4091 | |
| 927be08e AM |
4092 | /* The size of reliplt used by got entry relocs. */ |
| 4093 | bfd_size_type got_reli_size; | |
| 4094 | ||
| 9b5ecbd0 | 4095 | /* Statistics. */ |
| 7341d5e2 | 4096 | unsigned long stub_count[ppc_stub_global_entry]; |
| 9b5ecbd0 | 4097 | |
| ee75fd95 AM |
4098 | /* Number of stubs against global syms. */ |
| 4099 | unsigned long stub_globals; | |
| 4100 | ||
| ee67d69a AM |
4101 | /* Set if we're linking code with function descriptors. */ |
| 4102 | unsigned int opd_abi:1; | |
| 4103 | ||
| 4c52953f | 4104 | /* Support for multiple toc sections. */ |
| 33c0ec9d | 4105 | unsigned int do_multi_toc:1; |
| 4c52953f | 4106 | unsigned int multi_toc_needed:1; |
| 927be08e | 4107 | unsigned int second_toc_pass:1; |
| 67f0cbdb | 4108 | unsigned int do_toc_opt:1; |
| 4c52953f | 4109 | |
| 5d1634d7 | 4110 | /* Set on error. */ |
| 99877b66 | 4111 | unsigned int stub_error:1; |
| 721956f4 | 4112 | |
| 8c5b4e52 AM |
4113 | /* Whether func_desc_adjust needs to be run over symbols. */ |
| 4114 | unsigned int need_func_desc_adj:1; | |
| 721956f4 | 4115 | |
| 82e66161 AM |
4116 | /* Whether there exist local gnu indirect function resolvers, |
| 4117 | referenced by dynamic relocations. */ | |
| 4118 | unsigned int local_ifunc_resolver:1; | |
| 4119 | unsigned int maybe_local_ifunc_resolver:1; | |
| 4120 | ||
| f378ab09 AM |
4121 | /* Whether plt calls for ELFv2 localentry:0 funcs have been optimized. */ |
| 4122 | unsigned int has_plt_localentry0:1; | |
| 4123 | ||
| 721956f4 AM |
4124 | /* Incremented every time we size stubs. */ |
| 4125 | unsigned int stub_iteration; | |
| 5d1634d7 | 4126 | |
| 87d72d41 AM |
4127 | /* Small local sym cache. */ |
| 4128 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
4129 | }; |
| 4130 | ||
| 4c52953f AM |
4131 | /* Rename some of the generic section flags to better document how they |
| 4132 | are used here. */ | |
| b0dddeec AM |
4133 | |
| 4134 | /* Nonzero if this section has TLS related relocations. */ | |
| 4135 | #define has_tls_reloc sec_flg0 | |
| 4136 | ||
| 4137 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
| 4138 | #define has_tls_get_addr_call sec_flg1 | |
| 4139 | ||
| 4140 | /* Nonzero if this section has any toc or got relocs. */ | |
| 4141 | #define has_toc_reloc sec_flg2 | |
| 4142 | ||
| 4143 | /* Nonzero if this section has a call to another section that uses | |
| 4144 | the toc or got. */ | |
| d77c8a4b | 4145 | #define makes_toc_func_call sec_flg3 |
| b0dddeec AM |
4146 | |
| 4147 | /* Recursion protection when determining above flag. */ | |
| d77c8a4b | 4148 | #define call_check_in_progress sec_flg4 |
| 70cc837d | 4149 | #define call_check_done sec_flg5 |
| 4c52953f | 4150 | |
| 65f38f15 AM |
4151 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 4152 | ||
| 4153 | #define ppc_hash_table(p) \ | |
| 4dfe6ac6 NC |
4154 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 4155 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
| 65f38f15 | 4156 | |
| 721956f4 AM |
4157 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 4158 | ((struct ppc_stub_hash_entry *) \ | |
| 4159 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 4160 | ||
| 4161 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 4162 | ((struct ppc_branch_hash_entry *) \ | |
| 4163 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 4164 | ||
| 4165 | /* Create an entry in the stub hash table. */ | |
| 4166 | ||
| 4167 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4168 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 4169 | struct bfd_hash_table *table, | |
| 4170 | const char *string) | |
| 721956f4 AM |
4171 | { |
| 4172 | /* Allocate the structure if it has not already been allocated by a | |
| 4173 | subclass. */ | |
| 4174 | if (entry == NULL) | |
| 4175 | { | |
| 4176 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 4177 | if (entry == NULL) | |
| 4178 | return entry; | |
| 4179 | } | |
| 4180 | ||
| 4181 | /* Call the allocation method of the superclass. */ | |
| 4182 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4183 | if (entry != NULL) | |
| 4184 | { | |
| 4185 | struct ppc_stub_hash_entry *eh; | |
| 4186 | ||
| 4187 | /* Initialize the local fields. */ | |
| 4188 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 4189 | eh->stub_type = ppc_stub_none; |
| 6f20ed8a | 4190 | eh->group = NULL; |
| 721956f4 AM |
4191 | eh->stub_offset = 0; |
| 4192 | eh->target_value = 0; | |
| 4193 | eh->target_section = NULL; | |
| 721956f4 | 4194 | eh->h = NULL; |
| 6911b7dc | 4195 | eh->plt_ent = NULL; |
| 6911b7dc | 4196 | eh->other = 0; |
| 721956f4 AM |
4197 | } |
| 4198 | ||
| 4199 | return entry; | |
| 4200 | } | |
| 4201 | ||
| 4202 | /* Create an entry in the branch hash table. */ | |
| 4203 | ||
| 4204 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4205 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 4206 | struct bfd_hash_table *table, | |
| 4207 | const char *string) | |
| 721956f4 AM |
4208 | { |
| 4209 | /* Allocate the structure if it has not already been allocated by a | |
| 4210 | subclass. */ | |
| 4211 | if (entry == NULL) | |
| 4212 | { | |
| 4213 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 4214 | if (entry == NULL) | |
| 4215 | return entry; | |
| 4216 | } | |
| 4217 | ||
| 4218 | /* Call the allocation method of the superclass. */ | |
| 4219 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4220 | if (entry != NULL) | |
| 4221 | { | |
| 4222 | struct ppc_branch_hash_entry *eh; | |
| 4223 | ||
| 4224 | /* Initialize the local fields. */ | |
| 4225 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 4226 | eh->offset = 0; | |
| 4227 | eh->iter = 0; | |
| 4228 | } | |
| 4229 | ||
| 4230 | return entry; | |
| 4231 | } | |
| 4232 | ||
| 65f38f15 AM |
4233 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 4234 | ||
| 4235 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4236 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 4237 | struct bfd_hash_table *table, | |
| 4238 | const char *string) | |
| 65f38f15 AM |
4239 | { |
| 4240 | /* Allocate the structure if it has not already been allocated by a | |
| 4241 | subclass. */ | |
| 4242 | if (entry == NULL) | |
| 4243 | { | |
| 4244 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 4245 | if (entry == NULL) | |
| 4246 | return entry; | |
| 4247 | } | |
| 4248 | ||
| 4249 | /* Call the allocation method of the superclass. */ | |
| 4250 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 4251 | if (entry != NULL) | |
| 4252 | { | |
| 4253 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 4254 | ||
| b3fac117 | 4255 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 4256 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
4257 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 4258 | ||
| 4259 | /* When making function calls, old ABI code references function entry | |
| 4260 | points (dot symbols), while new ABI code references the function | |
| 4261 | descriptor symbol. We need to make any combination of reference and | |
| 4262 | definition work together, without breaking archive linking. | |
| 4263 | ||
| 4264 | For a defined function "foo" and an undefined call to "bar": | |
| 4265 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 4266 | "bar" too). | |
| 4267 | A new object defines "foo" and references "bar". | |
| 4268 | ||
| 4269 | A new object thus has no problem with its undefined symbols being | |
| 4270 | satisfied by definitions in an old object. On the other hand, the | |
| 4271 | old object won't have ".bar" satisfied by a new object. | |
| 4272 | ||
| 4273 | Keep a list of newly added dot-symbols. */ | |
| 4274 | ||
| 4275 | if (string[0] == '.') | |
| 4276 | { | |
| 4277 | struct ppc_link_hash_table *htab; | |
| 4278 | ||
| 4279 | htab = (struct ppc_link_hash_table *) table; | |
| 4280 | eh->u.next_dot_sym = htab->dot_syms; | |
| 4281 | htab->dot_syms = eh; | |
| 4282 | } | |
| 65f38f15 AM |
4283 | } |
| 4284 | ||
| 4285 | return entry; | |
| 4286 | } | |
| 4287 | ||
| 3b421ab3 AM |
4288 | struct tocsave_entry { |
| 4289 | asection *sec; | |
| 4290 | bfd_vma offset; | |
| 4291 | }; | |
| 4292 | ||
| 4293 | static hashval_t | |
| 4294 | tocsave_htab_hash (const void *p) | |
| 4295 | { | |
| 4296 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
| 4aef7643 | 4297 | return ((bfd_vma) (intptr_t) e->sec ^ e->offset) >> 3; |
| 3b421ab3 AM |
4298 | } |
| 4299 | ||
| 4300 | static int | |
| 4301 | tocsave_htab_eq (const void *p1, const void *p2) | |
| 4302 | { | |
| 4303 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
| 4304 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
| 4305 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
| 4306 | } | |
| 4307 | ||
| 68faa637 AM |
4308 | /* Destroy a ppc64 ELF linker hash table. */ |
| 4309 | ||
| 4310 | static void | |
| d495ab0d | 4311 | ppc64_elf_link_hash_table_free (bfd *obfd) |
| 68faa637 | 4312 | { |
| d495ab0d | 4313 | struct ppc_link_hash_table *htab; |
| 68faa637 | 4314 | |
| d495ab0d | 4315 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
| 68faa637 AM |
4316 | if (htab->tocsave_htab) |
| 4317 | htab_delete (htab->tocsave_htab); | |
| d495ab0d AM |
4318 | bfd_hash_table_free (&htab->branch_hash_table); |
| 4319 | bfd_hash_table_free (&htab->stub_hash_table); | |
| 4320 | _bfd_elf_link_hash_table_free (obfd); | |
| 68faa637 AM |
4321 | } |
| 4322 | ||
| 65f38f15 AM |
4323 | /* Create a ppc64 ELF linker hash table. */ |
| 4324 | ||
| 4325 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 4326 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
4327 | { |
| 4328 | struct ppc_link_hash_table *htab; | |
| 4329 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 4330 | ||
| 4ce794b7 | 4331 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
4332 | if (htab == NULL) |
| 4333 | return NULL; | |
| 4334 | ||
| 66eb6687 | 4335 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 4dfe6ac6 NC |
4336 | sizeof (struct ppc_link_hash_entry), |
| 4337 | PPC64_ELF_DATA)) | |
| 65f38f15 | 4338 | { |
| e2d34d7d | 4339 | free (htab); |
| 65f38f15 AM |
4340 | return NULL; |
| 4341 | } | |
| 4342 | ||
| 721956f4 | 4343 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
4344 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 4345 | sizeof (struct ppc_stub_hash_entry))) | |
| 2915c55b | 4346 | { |
| d495ab0d | 4347 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4348 | return NULL; |
| 4349 | } | |
| 721956f4 AM |
4350 | |
| 4351 | /* And the branch hash table. */ | |
| 66eb6687 AM |
4352 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 4353 | sizeof (struct ppc_branch_hash_entry))) | |
| 2915c55b JK |
4354 | { |
| 4355 | bfd_hash_table_free (&htab->stub_hash_table); | |
| d495ab0d | 4356 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4357 | return NULL; |
| 4358 | } | |
| 721956f4 | 4359 | |
| 3b421ab3 AM |
4360 | htab->tocsave_htab = htab_try_create (1024, |
| 4361 | tocsave_htab_hash, | |
| 4362 | tocsave_htab_eq, | |
| 4363 | NULL); | |
| 4364 | if (htab->tocsave_htab == NULL) | |
| 2915c55b | 4365 | { |
| d495ab0d | 4366 | ppc64_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4367 | return NULL; |
| 4368 | } | |
| d495ab0d | 4369 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
| 3b421ab3 | 4370 | |
| 3254fd24 AM |
4371 | /* Initializing two fields of the union is just cosmetic. We really |
| 4372 | only care about glist, but when compiled on a 32-bit host the | |
| 4373 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 4374 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
4375 | htab->elf.init_got_refcount.refcount = 0; |
| 4376 | htab->elf.init_got_refcount.glist = NULL; | |
| 4377 | htab->elf.init_plt_refcount.refcount = 0; | |
| 4378 | htab->elf.init_plt_refcount.glist = NULL; | |
| 4379 | htab->elf.init_got_offset.offset = 0; | |
| 4380 | htab->elf.init_got_offset.glist = NULL; | |
| 4381 | htab->elf.init_plt_offset.offset = 0; | |
| 4382 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 4383 | |
| 65f38f15 AM |
4384 | return &htab->elf.root; |
| 4385 | } | |
| 4386 | ||
| bfeb4a28 AM |
4387 | /* Create sections for linker generated code. */ |
| 4388 | ||
| 4389 | static bfd_boolean | |
| 4390 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
| 4391 | { | |
| 4392 | struct ppc_link_hash_table *htab; | |
| 4393 | flagword flags; | |
| 4394 | ||
| 4395 | htab = ppc_hash_table (info); | |
| 4396 | ||
| bfeb4a28 AM |
4397 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
| 4398 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| b32547cd AM |
4399 | if (htab->params->save_restore_funcs) |
| 4400 | { | |
| 4401 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4402 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
| 4403 | flags); | |
| 4404 | if (htab->sfpr == NULL | |
| 4405 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
| 4406 | return FALSE; | |
| 4407 | } | |
| 4408 | ||
| 4409 | if (bfd_link_relocatable (info)) | |
| 4410 | return TRUE; | |
| bfeb4a28 AM |
4411 | |
| 4412 | /* Create .glink for lazy dynamic linking support. */ | |
| 4413 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
| 4414 | flags); | |
| 4415 | if (htab->glink == NULL | |
| 4416 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
| 4417 | return FALSE; | |
| 4418 | ||
| 4419 | if (!info->no_ld_generated_unwind_info) | |
| 4420 | { | |
| 4421 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
| 4422 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4423 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
| 4424 | ".eh_frame", | |
| 4425 | flags); | |
| 4426 | if (htab->glink_eh_frame == NULL | |
| 4427 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
| 4428 | return FALSE; | |
| 4429 | } | |
| 4430 | ||
| 4431 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
| 33e44f2e AM |
4432 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
| 4433 | if (htab->elf.iplt == NULL | |
| 4434 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
| bfeb4a28 AM |
4435 | return FALSE; |
| 4436 | ||
| 4437 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4438 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 33e44f2e AM |
4439 | htab->elf.irelplt |
| 4440 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
| 4441 | if (htab->elf.irelplt == NULL | |
| 4442 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
| bfeb4a28 AM |
4443 | return FALSE; |
| 4444 | ||
| 4445 | /* Create branch lookup table for plt_branch stubs. */ | |
| 4446 | flags = (SEC_ALLOC | SEC_LOAD | |
| 4447 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4448 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4449 | flags); | |
| 4450 | if (htab->brlt == NULL | |
| 4451 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
| 4452 | return FALSE; | |
| 4453 | ||
| 0e1862bb | 4454 | if (!bfd_link_pic (info)) |
| bfeb4a28 AM |
4455 | return TRUE; |
| 4456 | ||
| 4457 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4458 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4459 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4460 | ".rela.branch_lt", | |
| 4461 | flags); | |
| 4462 | if (htab->relbrlt == NULL | |
| 4463 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4464 | return FALSE; | |
| 4465 | ||
| 4466 | return TRUE; | |
| 4467 | } | |
| 4468 | ||
| e717da7e AM |
4469 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 4470 | ||
| bfeb4a28 | 4471 | bfd_boolean |
| e7d1c40c AM |
4472 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
| 4473 | struct ppc64_elf_params *params) | |
| e717da7e AM |
4474 | { |
| 4475 | struct ppc_link_hash_table *htab; | |
| 4476 | ||
| e7d1c40c | 4477 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
| e717da7e AM |
4478 | |
| 4479 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4480 | linker created stub bfd. This ensures that the GOT header is at | |
| 4481 | the start of the output TOC section. */ | |
| 4482 | htab = ppc_hash_table (info); | |
| e7d1c40c AM |
4483 | htab->elf.dynobj = params->stub_bfd; |
| 4484 | htab->params = params; | |
| bfeb4a28 | 4485 | |
| bfeb4a28 | 4486 | return create_linkage_sections (htab->elf.dynobj, info); |
| e717da7e AM |
4487 | } |
| 4488 | ||
| 721956f4 AM |
4489 | /* Build a name for an entry in the stub hash table. */ |
| 4490 | ||
| 4491 | static char * | |
| 4ce794b7 AM |
4492 | ppc_stub_name (const asection *input_section, |
| 4493 | const asection *sym_sec, | |
| 4494 | const struct ppc_link_hash_entry *h, | |
| 4495 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4496 | { |
| 4497 | char *stub_name; | |
| bcaa2f82 | 4498 | ssize_t len; |
| 721956f4 AM |
4499 | |
| 4500 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4501 | offsets from a sym as a branch target? In fact, we could | |
| 4502 | probably assume the addend is always zero. */ | |
| 4503 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4504 | ||
| 4505 | if (h) | |
| 4506 | { | |
| 4507 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4508 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4509 | if (stub_name == NULL) |
| 4510 | return stub_name; | |
| 4511 | ||
| bcaa2f82 AM |
4512 | len = sprintf (stub_name, "%08x.%s+%x", |
| 4513 | input_section->id & 0xffffffff, | |
| 4514 | h->elf.root.root.string, | |
| 4515 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4516 | } |
| 4517 | else | |
| 4518 | { | |
| ad8e1ba5 | 4519 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4520 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4521 | if (stub_name == NULL) |
| 4522 | return stub_name; | |
| 4523 | ||
| bcaa2f82 AM |
4524 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
| 4525 | input_section->id & 0xffffffff, | |
| 4526 | sym_sec->id & 0xffffffff, | |
| 4527 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4528 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4529 | } |
| bcaa2f82 | 4530 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| ee75fd95 | 4531 | stub_name[len - 2] = 0; |
| 721956f4 AM |
4532 | return stub_name; |
| 4533 | } | |
| 4534 | ||
| 4535 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4536 | creating the stub name takes a bit of time. */ | |
| 4537 | ||
| 4538 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4539 | ppc_get_stub_entry (const asection *input_section, |
| 4540 | const asection *sym_sec, | |
| 039b3fef | 4541 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4542 | const Elf_Internal_Rela *rel, |
| 4543 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4544 | { |
| 4545 | struct ppc_stub_hash_entry *stub_entry; | |
| 6f20ed8a | 4546 | struct map_stub *group; |
| 721956f4 AM |
4547 | |
| 4548 | /* If this input section is part of a group of sections sharing one | |
| 4549 | stub section, then use the id of the first section in the group. | |
| 4550 | Stub names need to include a section id, as there may well be | |
| 4551 | more than one stub used to reach say, printf, and we need to | |
| 4552 | distinguish between them. */ | |
| 6f20ed8a | 4553 | group = htab->sec_info[input_section->id].u.group; |
| 89d77b8a AM |
4554 | if (group == NULL) |
| 4555 | return NULL; | |
| 721956f4 | 4556 | |
| b3fac117 AM |
4557 | if (h != NULL && h->u.stub_cache != NULL |
| 4558 | && h->u.stub_cache->h == h | |
| 6f20ed8a | 4559 | && h->u.stub_cache->group == group) |
| 721956f4 | 4560 | { |
| b3fac117 | 4561 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4562 | } |
| 4563 | else | |
| 4564 | { | |
| 4565 | char *stub_name; | |
| 4566 | ||
| 6f20ed8a | 4567 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
| 721956f4 AM |
4568 | if (stub_name == NULL) |
| 4569 | return NULL; | |
| 4570 | ||
| 4571 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4572 | stub_name, FALSE, FALSE); |
| 721956f4 | 4573 | if (h != NULL) |
| b3fac117 | 4574 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4575 | |
| 4576 | free (stub_name); | |
| 4577 | } | |
| 4578 | ||
| 4579 | return stub_entry; | |
| 4580 | } | |
| 4581 | ||
| 4582 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4583 | stub entry are initialised. */ | |
| 4584 | ||
| 4585 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4586 | ppc_add_stub (const char *stub_name, |
| 4587 | asection *section, | |
| 25f53a85 | 4588 | struct bfd_link_info *info) |
| 721956f4 | 4589 | { |
| 25f53a85 | 4590 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 6f20ed8a | 4591 | struct map_stub *group; |
| 721956f4 AM |
4592 | asection *link_sec; |
| 4593 | asection *stub_sec; | |
| 4594 | struct ppc_stub_hash_entry *stub_entry; | |
| 4595 | ||
| 6f20ed8a AM |
4596 | group = htab->sec_info[section->id].u.group; |
| 4597 | link_sec = group->link_sec; | |
| 4598 | stub_sec = group->stub_sec; | |
| 721956f4 AM |
4599 | if (stub_sec == NULL) |
| 4600 | { | |
| 6f20ed8a AM |
4601 | size_t namelen; |
| 4602 | bfd_size_type len; | |
| 4603 | char *s_name; | |
| 721956f4 | 4604 | |
| 6f20ed8a AM |
4605 | namelen = strlen (link_sec->name); |
| 4606 | len = namelen + sizeof (STUB_SUFFIX); | |
| 4607 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
| 4608 | if (s_name == NULL) | |
| 4609 | return NULL; | |
| 721956f4 | 4610 | |
| 6f20ed8a AM |
4611 | memcpy (s_name, link_sec->name, namelen); |
| 4612 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 4613 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
| 4614 | if (stub_sec == NULL) | |
| 4615 | return NULL; | |
| 4616 | group->stub_sec = stub_sec; | |
| 721956f4 AM |
4617 | } |
| 4618 | ||
| 4619 | /* Enter this entry into the linker stub hash table. */ | |
| 4620 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4621 | TRUE, FALSE); |
| 721956f4 AM |
4622 | if (stub_entry == NULL) |
| 4623 | { | |
| 695344c0 | 4624 | /* xgettext:c-format */ |
| 8de848d8 | 4625 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
| 25f53a85 | 4626 | section->owner, stub_name); |
| 721956f4 AM |
4627 | return NULL; |
| 4628 | } | |
| 4629 | ||
| 6f20ed8a | 4630 | stub_entry->group = group; |
| 721956f4 | 4631 | stub_entry->stub_offset = 0; |
| 721956f4 AM |
4632 | return stub_entry; |
| 4633 | } | |
| 4634 | ||
| e717da7e AM |
4635 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4636 | not already done. */ | |
| 65f38f15 | 4637 | |
| b34976b6 | 4638 | static bfd_boolean |
| e717da7e | 4639 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4640 | { |
| e717da7e AM |
4641 | asection *got, *relgot; |
| 4642 | flagword flags; | |
| 4643 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4644 | |
| 0c8d6e5c | 4645 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd | 4646 | return FALSE; |
| 4dfe6ac6 NC |
4647 | if (htab == NULL) |
| 4648 | return FALSE; | |
| 0ffa91dd | 4649 | |
| 33e44f2e AM |
4650 | if (!htab->elf.sgot |
| 4651 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4652 | return FALSE; | |
| e717da7e AM |
4653 | |
| 4654 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4655 | | SEC_LINKER_CREATED); | |
| 4656 | ||
| c456f082 | 4657 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4658 | if (!got |
| e717da7e AM |
4659 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4660 | return FALSE; | |
| 65f38f15 | 4661 | |
| c456f082 AM |
4662 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4663 | flags | SEC_READONLY); | |
| e717da7e | 4664 | if (!relgot |
| e717da7e | 4665 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4666 | return FALSE; |
| e717da7e AM |
4667 | |
| 4668 | ppc64_elf_tdata (abfd)->got = got; | |
| 4669 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4670 | return TRUE; |
| 65f38f15 | 4671 | } |
| 5bd4f169 | 4672 | |
| b31867b6 AM |
4673 | /* Follow indirect and warning symbol links. */ |
| 4674 | ||
| 4675 | static inline struct bfd_link_hash_entry * | |
| 4676 | follow_link (struct bfd_link_hash_entry *h) | |
| 4677 | { | |
| 4678 | while (h->type == bfd_link_hash_indirect | |
| 4679 | || h->type == bfd_link_hash_warning) | |
| 4680 | h = h->u.i.link; | |
| 4681 | return h; | |
| 4682 | } | |
| 4683 | ||
| 4684 | static inline struct elf_link_hash_entry * | |
| 4685 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4686 | { | |
| 4687 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4688 | } | |
| 4689 | ||
| 4690 | static inline struct ppc_link_hash_entry * | |
| 4691 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4692 | { | |
| 4693 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4694 | } | |
| 4695 | ||
| 40d16e0b AM |
4696 | /* Merge PLT info on FROM with that on TO. */ |
| 4697 | ||
| 4698 | static void | |
| 4699 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4700 | struct ppc_link_hash_entry *to) | |
| 4701 | { | |
| 4702 | if (from->elf.plt.plist != NULL) | |
| 4703 | { | |
| 4704 | if (to->elf.plt.plist != NULL) | |
| 4705 | { | |
| 4706 | struct plt_entry **entp; | |
| 4707 | struct plt_entry *ent; | |
| 4708 | ||
| 4709 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4710 | { | |
| 4711 | struct plt_entry *dent; | |
| 4712 | ||
| 4713 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4714 | if (dent->addend == ent->addend) | |
| 4715 | { | |
| 4716 | dent->plt.refcount += ent->plt.refcount; | |
| 4717 | *entp = ent->next; | |
| 4718 | break; | |
| 4719 | } | |
| 4720 | if (dent == NULL) | |
| 4721 | entp = &ent->next; | |
| 4722 | } | |
| 4723 | *entp = to->elf.plt.plist; | |
| 4724 | } | |
| 4725 | ||
| 4726 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4727 | from->elf.plt.plist = NULL; | |
| 4728 | } | |
| 4729 | } | |
| 4730 | ||
| 65f38f15 AM |
4731 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4732 | ||
| 4733 | static void | |
| fcfa13d2 AM |
4734 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4735 | struct elf_link_hash_entry *dir, | |
| 4736 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4737 | { |
| 4738 | struct ppc_link_hash_entry *edir, *eind; | |
| 4739 | ||
| 4740 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4741 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4742 | ||
| c79d6685 AM |
4743 | edir->is_func |= eind->is_func; |
| 4744 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 4745 | edir->tls_mask |= eind->tls_mask; | |
| 4746 | if (eind->oh != NULL) | |
| 4747 | edir->oh = ppc_follow_link (eind->oh); | |
| 4748 | ||
| e81830c5 AM |
4749 | /* If called to transfer flags for a weakdef during processing |
| 4750 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
| 4751 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
| 4752 | if (!(ELIMINATE_COPY_RELOCS | |
| 4753 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4754 | && edir->elf.dynamic_adjusted)) | |
| 4755 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 4756 | ||
| 474436e6 | 4757 | if (edir->elf.versioned != versioned_hidden) |
| e81830c5 AM |
4758 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; |
| 4759 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4760 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4761 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| 4762 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; | |
| c79d6685 | 4763 | |
| d311bc8b AM |
4764 | /* If we were called to copy over info for a weak sym, don't copy |
| 4765 | dyn_relocs, plt/got info, or dynindx. We used to copy dyn_relocs | |
| 4766 | in order to simplify readonly_dynrelocs and save a field in the | |
| 4767 | symbol hash entry, but that means dyn_relocs can't be used in any | |
| 4768 | tests about a specific symbol, or affect other symbol flags which | |
| 4769 | are then tested. | |
| 4770 | Chain weakdefs so we can get from the weakdef back to an alias. | |
| 4771 | The list is circular so that we don't need to use u.weakdef as | |
| 4772 | well as this list to look at all aliases. */ | |
| 4773 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4774 | { | |
| 4775 | struct ppc_link_hash_entry *cur, *add, *next; | |
| 4776 | ||
| 4777 | add = eind; | |
| 4778 | do | |
| 4779 | { | |
| 4780 | cur = edir->weakref; | |
| 4781 | if (cur != NULL) | |
| 4782 | { | |
| 4783 | do | |
| 4784 | { | |
| 4785 | /* We can be called twice for the same symbols. | |
| 4786 | Don't make multiple loops. */ | |
| 4787 | if (cur == add) | |
| 4788 | return; | |
| 4789 | cur = cur->weakref; | |
| 4790 | } while (cur != edir); | |
| 4791 | } | |
| 4792 | next = add->weakref; | |
| 4793 | if (cur != add) | |
| 4794 | { | |
| 4795 | add->weakref = edir->weakref != NULL ? edir->weakref : edir; | |
| 4796 | edir->weakref = add; | |
| 4797 | } | |
| 4798 | add = next; | |
| 4799 | } while (add != NULL && add != eind); | |
| 4800 | return; | |
| 4801 | } | |
| 4802 | ||
| 411e1bfb | 4803 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4804 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4805 | { |
| bbd7ec4a AM |
4806 | if (edir->dyn_relocs != NULL) |
| 4807 | { | |
| 6061a67d AM |
4808 | struct elf_dyn_relocs **pp; |
| 4809 | struct elf_dyn_relocs *p; | |
| bbd7ec4a | 4810 | |
| fcfa13d2 | 4811 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4812 | list. Merge any entries against the same section. */ |
| 4813 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4814 | { | |
| 6061a67d | 4815 | struct elf_dyn_relocs *q; |
| bbd7ec4a AM |
4816 | |
| 4817 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4818 | if (q->sec == p->sec) | |
| 4819 | { | |
| 4820 | q->pc_count += p->pc_count; | |
| 4821 | q->count += p->count; | |
| 4822 | *pp = p->next; | |
| 4823 | break; | |
| 4824 | } | |
| 4825 | if (q == NULL) | |
| 4826 | pp = &p->next; | |
| 4827 | } | |
| 4828 | *pp = edir->dyn_relocs; | |
| 4829 | } | |
| 4830 | ||
| 65f38f15 AM |
4831 | edir->dyn_relocs = eind->dyn_relocs; |
| 4832 | eind->dyn_relocs = NULL; | |
| 4833 | } | |
| 65f38f15 | 4834 | |
| 81848ca0 AM |
4835 | /* Copy over got entries that we may have already seen to the |
| 4836 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4837 | if (eind->elf.got.glist != NULL) |
| 4838 | { | |
| 4839 | if (edir->elf.got.glist != NULL) | |
| 4840 | { | |
| 4841 | struct got_entry **entp; | |
| 4842 | struct got_entry *ent; | |
| 4843 | ||
| 4844 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4845 | { | |
| 4846 | struct got_entry *dent; | |
| 4847 | ||
| 4848 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4849 | if (dent->addend == ent->addend | |
| e717da7e | 4850 | && dent->owner == ent->owner |
| 411e1bfb AM |
4851 | && dent->tls_type == ent->tls_type) |
| 4852 | { | |
| 4853 | dent->got.refcount += ent->got.refcount; | |
| 4854 | *entp = ent->next; | |
| 4855 | break; | |
| 4856 | } | |
| 4857 | if (dent == NULL) | |
| 4858 | entp = &ent->next; | |
| 4859 | } | |
| 4860 | *entp = edir->elf.got.glist; | |
| 4861 | } | |
| 4862 | ||
| 4863 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4864 | eind->elf.got.glist = NULL; | |
| 4865 | } | |
| 4866 | ||
| 4867 | /* And plt entries. */ | |
| 40d16e0b | 4868 | move_plt_plist (eind, edir); |
| 411e1bfb | 4869 | |
| fcfa13d2 | 4870 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4871 | { |
| fcfa13d2 AM |
4872 | if (edir->elf.dynindx != -1) |
| 4873 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4874 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4875 | edir->elf.dynindx = eind->elf.dynindx; |
| 4876 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4877 | eind->elf.dynindx = -1; | |
| 4878 | eind->elf.dynstr_index = 0; | |
| 4879 | } | |
| 411e1bfb AM |
4880 | } |
| 4881 | ||
| 8387904d AM |
4882 | /* Find the function descriptor hash entry from the given function code |
| 4883 | hash entry FH. Link the entries via their OH fields. */ | |
| 4884 | ||
| 4885 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4886 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4887 | { |
| 4888 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4889 | ||
| 4890 | if (fdh == NULL) | |
| 4891 | { | |
| 4892 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4893 | ||
| 4894 | fdh = (struct ppc_link_hash_entry *) | |
| 4895 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4896 | if (fdh == NULL) |
| 4897 | return fdh; | |
| 4898 | ||
| 4899 | fdh->is_func_descriptor = 1; | |
| 4900 | fdh->oh = fh; | |
| 4901 | fh->is_func = 1; | |
| 4902 | fh->oh = fdh; | |
| 8387904d AM |
4903 | } |
| 4904 | ||
| 8c5b4e52 AM |
4905 | fdh = ppc_follow_link (fdh); |
| 4906 | fdh->is_func_descriptor = 1; | |
| 4907 | fdh->oh = fh; | |
| 4908 | return fdh; | |
| 8387904d AM |
4909 | } |
| 4910 | ||
| 8c5b4e52 | 4911 | /* Make a fake function descriptor sym for the undefined code sym FH. */ |
| bb700d78 AM |
4912 | |
| 4913 | static struct ppc_link_hash_entry * | |
| 4914 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4915 | struct ppc_link_hash_entry *fh) |
| bb700d78 | 4916 | { |
| 8c5b4e52 AM |
4917 | bfd *abfd = fh->elf.root.u.undef.abfd; |
| 4918 | struct bfd_link_hash_entry *bh = NULL; | |
| bb700d78 | 4919 | struct ppc_link_hash_entry *fdh; |
| 8c5b4e52 AM |
4920 | flagword flags = (fh->elf.root.type == bfd_link_hash_undefweak |
| 4921 | ? BSF_WEAK | |
| 4922 | : BSF_GLOBAL); | |
| 4923 | ||
| 4924 | if (!_bfd_generic_link_add_one_symbol (info, abfd, | |
| 4925 | fh->elf.root.root.string + 1, | |
| 4926 | flags, bfd_und_section_ptr, 0, | |
| 4927 | NULL, FALSE, FALSE, &bh)) | |
| bb700d78 AM |
4928 | return NULL; |
| 4929 | ||
| 4930 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4931 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4932 | fdh->fake = 1; |
| 4933 | fdh->is_func_descriptor = 1; | |
| 4934 | fdh->oh = fh; | |
| 4935 | fh->is_func = 1; | |
| 4936 | fh->oh = fdh; | |
| bb700d78 AM |
4937 | return fdh; |
| 4938 | } | |
| 4939 | ||
| 8387904d AM |
4940 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4941 | function type. */ | |
| 555cd476 AM |
4942 | |
| 4943 | static bfd_boolean | |
| c16153ae | 4944 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
| e054468f | 4945 | struct bfd_link_info *info, |
| 555cd476 | 4946 | Elf_Internal_Sym *isym, |
| 6911b7dc | 4947 | const char **name, |
| 555cd476 AM |
4948 | flagword *flags ATTRIBUTE_UNUSED, |
| 4949 | asection **sec, | |
| b53dfeb2 | 4950 | bfd_vma *value) |
| 555cd476 | 4951 | { |
| a43942db | 4952 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
| f1885d1e AM |
4953 | && (ibfd->flags & DYNAMIC) == 0 |
| 4954 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
| a43942db | 4955 | elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc; |
| f64b2e8d | 4956 | |
| b53dfeb2 | 4957 | if (*sec != NULL |
| f1885d1e | 4958 | && strcmp ((*sec)->name, ".opd") == 0) |
| b53dfeb2 AM |
4959 | { |
| 4960 | asection *code_sec; | |
| 4961 | ||
| 4962 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
| 4963 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
| 4964 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
| 4965 | ||
| 4966 | /* If the symbol is a function defined in .opd, and the function | |
| 4967 | code is in a discarded group, let it appear to be undefined. */ | |
| 0e1862bb | 4968 | if (!bfd_link_relocatable (info) |
| b53dfeb2 AM |
4969 | && (*sec)->reloc_count != 0 |
| 4970 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
| 4971 | FALSE) != (bfd_vma) -1 | |
| 4972 | && discarded_section (code_sec)) | |
| 4973 | { | |
| 4974 | *sec = bfd_und_section_ptr; | |
| 4975 | isym->st_shndx = SHN_UNDEF; | |
| 4976 | } | |
| 4977 | } | |
| dbd1e97e AM |
4978 | else if (*sec != NULL |
| 4979 | && strcmp ((*sec)->name, ".toc") == 0 | |
| 4980 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
| 4981 | { | |
| 4982 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4983 | if (htab != NULL) | |
| 4984 | htab->params->object_in_toc = 1; | |
| 4985 | } | |
| 433817dd | 4986 | |
| 6911b7dc AM |
4987 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
| 4988 | { | |
| 4989 | if (abiversion (ibfd) == 0) | |
| 4990 | set_abiversion (ibfd, 2); | |
| 4991 | else if (abiversion (ibfd) == 1) | |
| 4992 | { | |
| 4993 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
| 4994 | " for ABI version 1\n"), name); | |
| 4995 | bfd_set_error (bfd_error_bad_value); | |
| 4996 | return FALSE; | |
| 4997 | } | |
| 4998 | } | |
| 4999 | ||
| 555cd476 AM |
5000 | return TRUE; |
| 5001 | } | |
| 5002 | ||
| 6911b7dc AM |
5003 | /* Merge non-visibility st_other attributes: local entry point. */ |
| 5004 | ||
| 5005 | static void | |
| 5006 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
| 5007 | const Elf_Internal_Sym *isym, | |
| 5008 | bfd_boolean definition, | |
| 5009 | bfd_boolean dynamic) | |
| 5010 | { | |
| f378ab09 | 5011 | if (definition && (!dynamic || !h->def_regular)) |
| 6911b7dc AM |
5012 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) |
| 5013 | | ELF_ST_VISIBILITY (h->other)); | |
| 5014 | } | |
| 5015 | ||
| 8c5b4e52 AM |
5016 | /* Hook called on merging a symbol. We use this to clear "fake" since |
| 5017 | we now have a real symbol. */ | |
| 5018 | ||
| 5019 | static bfd_boolean | |
| 5020 | ppc64_elf_merge_symbol (struct elf_link_hash_entry *h, | |
| 5021 | const Elf_Internal_Sym *isym ATTRIBUTE_UNUSED, | |
| 5022 | asection **psec ATTRIBUTE_UNUSED, | |
| 5023 | bfd_boolean newdef ATTRIBUTE_UNUSED, | |
| 5024 | bfd_boolean olddef ATTRIBUTE_UNUSED, | |
| 5025 | bfd *oldbfd ATTRIBUTE_UNUSED, | |
| 5026 | const asection *oldsec ATTRIBUTE_UNUSED) | |
| 5027 | { | |
| 5028 | ((struct ppc_link_hash_entry *) h)->fake = 0; | |
| 5029 | return TRUE; | |
| 5030 | } | |
| 5031 | ||
| 8387904d | 5032 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
5033 | inclusion of a new ABI object archive that defines "bar". |
| 5034 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 5035 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
5036 | |
| 5037 | static struct elf_link_hash_entry * | |
| 5038 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 5039 | struct bfd_link_info *info, | |
| 5040 | const char *name) | |
| 5041 | { | |
| 5042 | struct elf_link_hash_entry *h; | |
| 5043 | char *dot_name; | |
| 5044 | size_t len; | |
| 5045 | ||
| 5046 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
5047 | if (h != NULL |
| 5048 | /* Don't return this sym if it is a fake function descriptor | |
| 5049 | created by add_symbol_adjust. */ | |
| 8c5b4e52 | 5050 | && !((struct ppc_link_hash_entry *) h)->fake) |
| 8387904d AM |
5051 | return h; |
| 5052 | ||
| 5053 | if (name[0] == '.') | |
| 5054 | return h; | |
| 5055 | ||
| 5056 | len = strlen (name); | |
| 5057 | dot_name = bfd_alloc (abfd, len + 2); | |
| 5058 | if (dot_name == NULL) | |
| 5059 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 5060 | dot_name[0] = '.'; | |
| 5061 | memcpy (dot_name + 1, name, len + 1); | |
| 5062 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 5063 | bfd_release (abfd, dot_name); | |
| 5064 | return h; | |
| 5065 | } | |
| 5066 | ||
| 5067 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
5068 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 5069 | are made weak. This stops later archive searches from including an | |
| 5070 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
5071 | prevents the linker complaining about undefined symbols. |
| 5072 | We also check and correct mismatched symbol visibility here. The | |
| 5073 | most restrictive visibility of the function descriptor and the | |
| 5074 | function entry symbol is used. */ | |
| 8387904d AM |
5075 | |
| 5076 | static bfd_boolean | |
| b3fac117 | 5077 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 5078 | { |
| 8387904d AM |
5079 | struct ppc_link_hash_table *htab; |
| 5080 | struct ppc_link_hash_entry *fdh; | |
| 5081 | ||
| b3fac117 AM |
5082 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 5083 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 5084 | |
| 8400d40d AM |
5085 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 5086 | return TRUE; | |
| 5087 | ||
| b3fac117 AM |
5088 | if (eh->elf.root.root.string[0] != '.') |
| 5089 | abort (); | |
| 8387904d | 5090 | |
| b3fac117 | 5091 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5092 | if (htab == NULL) |
| 5093 | return FALSE; | |
| 5094 | ||
| b31867b6 | 5095 | fdh = lookup_fdh (eh, htab); |
| 8c5b4e52 AM |
5096 | if (fdh == NULL |
| 5097 | && !bfd_link_relocatable (info) | |
| 5098 | && (eh->elf.root.type == bfd_link_hash_undefined | |
| 5099 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 5100 | && eh->elf.ref_regular) | |
| 5101 | { | |
| 5102 | /* Make an undefined function descriptor sym, in order to | |
| 5103 | pull in an --as-needed shared lib. Archives are handled | |
| 5104 | elsewhere. */ | |
| 5105 | fdh = make_fdh (info, eh); | |
| 5106 | if (fdh == NULL) | |
| 5107 | return FALSE; | |
| bb700d78 | 5108 | } |
| 8c5b4e52 AM |
5109 | |
| 5110 | if (fdh != NULL) | |
| 8387904d | 5111 | { |
| 35b0ce59 AM |
5112 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 5113 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 8c5b4e52 AM |
5114 | |
| 5115 | /* Make both descriptor and entry symbol have the most | |
| 5116 | constraining visibility of either symbol. */ | |
| 35b0ce59 AM |
5117 | if (entry_vis < descr_vis) |
| 5118 | fdh->elf.other += entry_vis - descr_vis; | |
| 5119 | else if (entry_vis > descr_vis) | |
| 5120 | eh->elf.other += descr_vis - entry_vis; | |
| 5121 | ||
| 8c5b4e52 AM |
5122 | /* Propagate reference flags from entry symbol to function |
| 5123 | descriptor symbol. */ | |
| bc4e12de | 5124 | fdh->elf.root.non_ir_ref_regular |= eh->elf.root.non_ir_ref_regular; |
| 4070765b | 5125 | fdh->elf.root.non_ir_ref_dynamic |= eh->elf.root.non_ir_ref_dynamic; |
| 8c5b4e52 AM |
5126 | fdh->elf.ref_regular |= eh->elf.ref_regular; |
| 5127 | fdh->elf.ref_regular_nonweak |= eh->elf.ref_regular_nonweak; | |
| 5128 | ||
| 5129 | if (!fdh->elf.forced_local | |
| 5130 | && fdh->elf.dynindx == -1 | |
| 5131 | && fdh->elf.versioned != versioned_hidden | |
| 5132 | && (bfd_link_dll (info) | |
| 5133 | || fdh->elf.def_dynamic | |
| 5134 | || fdh->elf.ref_dynamic) | |
| 5135 | && (eh->elf.ref_regular | |
| 5136 | || eh->elf.def_regular)) | |
| 5137 | { | |
| 5138 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
| 5139 | return FALSE; | |
| 35b0ce59 | 5140 | } |
| 8387904d | 5141 | } |
| 99877b66 | 5142 | |
| 8387904d AM |
5143 | return TRUE; |
| 5144 | } | |
| 5145 | ||
| f6c7c3e8 AM |
5146 | /* Set up opd section info and abiversion for IBFD, and process list |
| 5147 | of dot-symbols we made in link_hash_newfunc. */ | |
| b3fac117 | 5148 | |
| 8387904d | 5149 | static bfd_boolean |
| f6c7c3e8 | 5150 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 5151 | { |
| 99877b66 | 5152 | struct ppc_link_hash_table *htab; |
| b3fac117 | 5153 | struct ppc_link_hash_entry **p, *eh; |
| 459609d6 | 5154 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
| 433817dd | 5155 | |
| 459609d6 | 5156 | if (opd != NULL && opd->size != 0) |
| b3fac117 | 5157 | { |
| 459609d6 AM |
5158 | if (abiversion (ibfd) == 0) |
| 5159 | set_abiversion (ibfd, 1); | |
| 8a2058b5 | 5160 | else if (abiversion (ibfd) >= 2) |
| f6c7c3e8 | 5161 | { |
| 695344c0 | 5162 | /* xgettext:c-format */ |
| 459609d6 AM |
5163 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
| 5164 | " version %d\n"), | |
| 5165 | ibfd, abiversion (ibfd)); | |
| 5166 | bfd_set_error (bfd_error_bad_value); | |
| 5167 | return FALSE; | |
| f6c7c3e8 AM |
5168 | } |
| 5169 | ||
| 459609d6 AM |
5170 | if ((ibfd->flags & DYNAMIC) == 0 |
| 5171 | && (opd->flags & SEC_RELOC) != 0 | |
| 5172 | && opd->reloc_count != 0 | |
| 5173 | && !bfd_is_abs_section (opd->output_section)) | |
| b3fac117 | 5174 | { |
| 459609d6 AM |
5175 | /* Garbage collection needs some extra help with .opd sections. |
| 5176 | We don't want to necessarily keep everything referenced by | |
| 5177 | relocs in .opd, as that would keep all functions. Instead, | |
| 5178 | if we reference an .opd symbol (a function descriptor), we | |
| 5179 | want to keep the function code symbol's section. This is | |
| 5180 | easy for global symbols, but for local syms we need to keep | |
| 5181 | information about the associated function section. */ | |
| 5182 | bfd_size_type amt; | |
| 5183 | asection **opd_sym_map; | |
| 5184 | ||
| 51aecdc5 | 5185 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
| 459609d6 AM |
5186 | opd_sym_map = bfd_zalloc (ibfd, amt); |
| 5187 | if (opd_sym_map == NULL) | |
| b3fac117 | 5188 | return FALSE; |
| 459609d6 AM |
5189 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
| 5190 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
| 5191 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
| b3fac117 AM |
5192 | } |
| 5193 | } | |
| 5194 | ||
| 459609d6 AM |
5195 | if (!is_ppc64_elf (info->output_bfd)) |
| 5196 | return TRUE; | |
| 5197 | htab = ppc_hash_table (info); | |
| 5198 | if (htab == NULL) | |
| 5199 | return FALSE; | |
| 5200 | ||
| 5201 | /* For input files without an explicit abiversion in e_flags | |
| 5202 | we should have flagged any with symbol st_other bits set | |
| 5203 | as ELFv1 and above flagged those with .opd as ELFv2. | |
| 5204 | Set the output abiversion if not yet set, and for any input | |
| 5205 | still ambiguous, take its abiversion from the output. | |
| 5206 | Differences in ABI are reported later. */ | |
| 5207 | if (abiversion (info->output_bfd) == 0) | |
| 5208 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
| 5209 | else if (abiversion (ibfd) == 0) | |
| 5210 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
| 5211 | ||
| 5212 | p = &htab->dot_syms; | |
| 5213 | while ((eh = *p) != NULL) | |
| 5214 | { | |
| 5215 | *p = NULL; | |
| 5216 | if (&eh->elf == htab->elf.hgot) | |
| 5217 | ; | |
| 5218 | else if (htab->elf.hgot == NULL | |
| 5219 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
| 5220 | htab->elf.hgot = &eh->elf; | |
| 8c5b4e52 AM |
5221 | else if (abiversion (ibfd) <= 1) |
| 5222 | { | |
| 5223 | htab->need_func_desc_adj = 1; | |
| 5224 | if (!add_symbol_adjust (eh, info)) | |
| 5225 | return FALSE; | |
| 5226 | } | |
| 459609d6 AM |
5227 | p = &eh->u.next_dot_sym; |
| 5228 | } | |
| b3fac117 | 5229 | return TRUE; |
| 8387904d AM |
5230 | } |
| 5231 | ||
| 97fed1c9 JJ |
5232 | /* Undo hash table changes when an --as-needed input file is determined |
| 5233 | not to be needed. */ | |
| 5234 | ||
| 5235 | static bfd_boolean | |
| e5034e59 AM |
5236 | ppc64_elf_notice_as_needed (bfd *ibfd, |
| 5237 | struct bfd_link_info *info, | |
| 5238 | enum notice_asneeded_action act) | |
| 97fed1c9 | 5239 | { |
| e5034e59 AM |
5240 | if (act == notice_not_needed) |
| 5241 | { | |
| 5242 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 5243 | |
| e5034e59 AM |
5244 | if (htab == NULL) |
| 5245 | return FALSE; | |
| 4dfe6ac6 | 5246 | |
| e5034e59 AM |
5247 | htab->dot_syms = NULL; |
| 5248 | } | |
| 5249 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
| 97fed1c9 JJ |
5250 | } |
| 5251 | ||
| aa374f67 AM |
5252 | /* If --just-symbols against a final linked binary, then assume we need |
| 5253 | toc adjusting stubs when calling functions defined there. */ | |
| 5254 | ||
| 5255 | static void | |
| 5256 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
| 5257 | { | |
| 5258 | if ((sec->flags & SEC_CODE) != 0 | |
| 5259 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
| 5260 | && is_ppc64_elf (sec->owner)) | |
| 5261 | { | |
| 2c3f079f AM |
5262 | if (abiversion (sec->owner) >= 2 |
| 5263 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
| aa374f67 AM |
5264 | sec->has_toc_reloc = 1; |
| 5265 | } | |
| 5266 | _bfd_elf_link_just_syms (sec, info); | |
| 5267 | } | |
| 5268 | ||
| e054468f | 5269 | static struct plt_entry ** |
| 4ce794b7 AM |
5270 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 5271 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
5272 | { |
| 5273 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 5274 | struct plt_entry **local_plt; |
| f961d9dd | 5275 | unsigned char *local_got_tls_masks; |
| 411e1bfb AM |
5276 | |
| 5277 | if (local_got_ents == NULL) | |
| 5278 | { | |
| 5279 | bfd_size_type size = symtab_hdr->sh_info; | |
| 5280 | ||
| e054468f AM |
5281 | size *= (sizeof (*local_got_ents) |
| 5282 | + sizeof (*local_plt) | |
| 5283 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 5284 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 5285 | if (local_got_ents == NULL) |
| e054468f | 5286 | return NULL; |
| 411e1bfb AM |
5287 | elf_local_got_ents (abfd) = local_got_ents; |
| 5288 | } | |
| 5289 | ||
| e054468f | 5290 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
5291 | { |
| 5292 | struct got_entry *ent; | |
| 5293 | ||
| 5294 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
5295 | if (ent->addend == r_addend |
| 5296 | && ent->owner == abfd | |
| 5297 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
5298 | break; |
| 5299 | if (ent == NULL) | |
| 5300 | { | |
| 5301 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 5302 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5303 | if (ent == NULL) |
| 5304 | return FALSE; | |
| 5305 | ent->next = local_got_ents[r_symndx]; | |
| 5306 | ent->addend = r_addend; | |
| e717da7e | 5307 | ent->owner = abfd; |
| 411e1bfb | 5308 | ent->tls_type = tls_type; |
| 927be08e | 5309 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5310 | ent->got.refcount = 0; |
| 5311 | local_got_ents[r_symndx] = ent; | |
| 5312 | } | |
| 5313 | ent->got.refcount += 1; | |
| 5314 | } | |
| 5315 | ||
| e054468f | 5316 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| f961d9dd | 5317 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 5318 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
5319 | |
| 5320 | return local_plt + r_symndx; | |
| 65f38f15 AM |
5321 | } |
| 5322 | ||
| 411e1bfb | 5323 | static bfd_boolean |
| e054468f | 5324 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 5325 | { |
| 411e1bfb | 5326 | struct plt_entry *ent; |
| 1e2f5b6e | 5327 | |
| e054468f | 5328 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5329 | if (ent->addend == addend) |
| 5330 | break; | |
| 5331 | if (ent == NULL) | |
| 1e2f5b6e | 5332 | { |
| 411e1bfb | 5333 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5334 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5335 | if (ent == NULL) |
| 5336 | return FALSE; | |
| e054468f | 5337 | ent->next = *plist; |
| 411e1bfb AM |
5338 | ent->addend = addend; |
| 5339 | ent->plt.refcount = 0; | |
| e054468f | 5340 | *plist = ent; |
| 1e2f5b6e | 5341 | } |
| 411e1bfb | 5342 | ent->plt.refcount += 1; |
| b34976b6 | 5343 | return TRUE; |
| 1e2f5b6e AM |
5344 | } |
| 5345 | ||
| e054468f AM |
5346 | static bfd_boolean |
| 5347 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 5348 | { | |
| 5349 | return (r_type == R_PPC64_REL24 | |
| 5350 | || r_type == R_PPC64_REL14 | |
| 5351 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 5352 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 5353 | || r_type == R_PPC64_ADDR24 | |
| 5354 | || r_type == R_PPC64_ADDR14 | |
| 5355 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 5356 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 5357 | } | |
| 5358 | ||
| 5bd4f169 | 5359 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 5360 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 5361 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 5362 | |
| b34976b6 | 5363 | static bfd_boolean |
| 4ce794b7 AM |
5364 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 5365 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5366 | { |
| 65f38f15 | 5367 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 5368 | Elf_Internal_Shdr *symtab_hdr; |
| c7e2358a | 5369 | struct elf_link_hash_entry **sym_hashes; |
| 5bd4f169 AM |
5370 | const Elf_Internal_Rela *rel; |
| 5371 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 5372 | asection *sreloc; |
| 1e2f5b6e | 5373 | asection **opd_sym_map; |
| 3a71aa26 | 5374 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 5375 | |
| 0e1862bb | 5376 | if (bfd_link_relocatable (info)) |
| b34976b6 | 5377 | return TRUE; |
| 5bd4f169 | 5378 | |
| 680a3378 AM |
5379 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 5380 | In particular, any relocs in such sections should not affect GOT | |
| 5381 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 5382 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 5383 | relocs, and there's not much point in propagating relocs to shared | |
| 5384 | libs that the dynamic linker won't relocate. */ | |
| 5385 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 5386 | return TRUE; | |
| 5387 | ||
| 0c8d6e5c | 5388 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 5389 | |
| 65f38f15 | 5390 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5391 | if (htab == NULL) |
| 5392 | return FALSE; | |
| 5393 | ||
| 3a71aa26 AM |
5394 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 5395 | FALSE, FALSE, TRUE); | |
| 5396 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 5397 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 5398 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5399 | sym_hashes = elf_sym_hashes (abfd); |
| 5bd4f169 | 5400 | sreloc = NULL; |
| 1e2f5b6e | 5401 | opd_sym_map = NULL; |
| f6c7c3e8 AM |
5402 | if (ppc64_elf_section_data (sec) != NULL |
| 5403 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
| 5404 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
| 5bd4f169 AM |
5405 | |
| 5406 | rel_end = relocs + sec->reloc_count; | |
| 5407 | for (rel = relocs; rel < rel_end; rel++) | |
| 5408 | { | |
| 5409 | unsigned long r_symndx; | |
| 5410 | struct elf_link_hash_entry *h; | |
| 04c9666a | 5411 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 5412 | int tls_type; |
| 7c8fe5c4 | 5413 | struct _ppc64_elf_section_data *ppc64_sec; |
| cbf95972 | 5414 | struct plt_entry **ifunc, **plt_list; |
| 5bd4f169 AM |
5415 | |
| 5416 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 5417 | if (r_symndx < symtab_hdr->sh_info) | |
| 5418 | h = NULL; | |
| 5419 | else | |
| 973a3492 | 5420 | { |
| 8c5b4e52 AM |
5421 | struct ppc_link_hash_entry *eh; |
| 5422 | ||
| 973a3492 | 5423 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 5424 | h = elf_follow_link (h); |
| 8c5b4e52 | 5425 | eh = (struct ppc_link_hash_entry *) h; |
| 81fbe831 AM |
5426 | |
| 5427 | /* PR15323, ref flags aren't set for references in the same | |
| 5428 | object. */ | |
| bc4e12de | 5429 | h->root.non_ir_ref_regular = 1; |
| 8c5b4e52 | 5430 | if (eh->is_func && eh->oh != NULL) |
| bc4e12de | 5431 | eh->oh->elf.root.non_ir_ref_regular = 1; |
| 1c865ab2 AM |
5432 | |
| 5433 | if (h == htab->elf.hgot) | |
| 5434 | sec->has_toc_reloc = 1; | |
| 973a3492 | 5435 | } |
| 5bd4f169 | 5436 | |
| 727fc41e | 5437 | tls_type = 0; |
| e054468f | 5438 | ifunc = NULL; |
| 25f23106 AM |
5439 | if (h != NULL) |
| 5440 | { | |
| 5441 | if (h->type == STT_GNU_IFUNC) | |
| 5442 | { | |
| 5443 | h->needs_plt = 1; | |
| 5444 | ifunc = &h->plt.plist; | |
| 5445 | } | |
| 5446 | } | |
| 5447 | else | |
| 5448 | { | |
| 5449 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5450 | abfd, r_symndx); | |
| 5451 | if (isym == NULL) | |
| 5452 | return FALSE; | |
| 5453 | ||
| 5454 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 5455 | { | |
| 5456 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5457 | rel->r_addend, PLT_IFUNC); | |
| 5458 | if (ifunc == NULL) | |
| 5459 | return FALSE; | |
| 5460 | } | |
| 5461 | } | |
| 727fc41e | 5462 | |
| cbf95972 | 5463 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 5464 | switch (r_type) |
| 5bd4f169 | 5465 | { |
| 727fc41e AM |
5466 | case R_PPC64_TLSGD: |
| 5467 | case R_PPC64_TLSLD: | |
| 5468 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 5469 | its parameter symbol. */ | |
| 5470 | break; | |
| 5471 | ||
| 411e1bfb AM |
5472 | case R_PPC64_GOT_TLSLD16: |
| 5473 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5474 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5475 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5476 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5477 | goto dogottls; |
| 5478 | ||
| 5479 | case R_PPC64_GOT_TLSGD16: | |
| 5480 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5481 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5482 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5483 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5484 | goto dogottls; |
| 5485 | ||
| 5486 | case R_PPC64_GOT_TPREL16_DS: | |
| 5487 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5488 | case R_PPC64_GOT_TPREL16_HI: | |
| 5489 | case R_PPC64_GOT_TPREL16_HA: | |
| 0e1862bb | 5490 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
5491 | info->flags |= DF_STATIC_TLS; |
| 5492 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5493 | goto dogottls; | |
| 5494 | ||
| 5495 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5496 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5497 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5498 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5499 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5500 | dogottls: | |
| 5501 | sec->has_tls_reloc = 1; | |
| 1a0670f3 | 5502 | /* Fall through */ |
| 411e1bfb | 5503 | |
| 5bd4f169 | 5504 | case R_PPC64_GOT16: |
| 5bd4f169 | 5505 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
5506 | case R_PPC64_GOT16_HA: |
| 5507 | case R_PPC64_GOT16_HI: | |
| 5508 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 5509 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 5510 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 5511 | sec->has_toc_reloc = 1; |
| 33c0ec9d AM |
5512 | if (r_type == R_PPC64_GOT_TLSLD16 |
| 5513 | || r_type == R_PPC64_GOT_TLSGD16 | |
| 5514 | || r_type == R_PPC64_GOT_TPREL16_DS | |
| 5515 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
| 5516 | || r_type == R_PPC64_GOT16 | |
| 5517 | || r_type == R_PPC64_GOT16_DS) | |
| 5518 | { | |
| 5519 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5520 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 33c0ec9d AM |
5521 | } |
| 5522 | ||
| e717da7e AM |
5523 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 5524 | && !create_got_section (abfd, info)) | |
| b34976b6 | 5525 | return FALSE; |
| 5bd4f169 AM |
5526 | |
| 5527 | if (h != NULL) | |
| 5528 | { | |
| 411e1bfb AM |
5529 | struct ppc_link_hash_entry *eh; |
| 5530 | struct got_entry *ent; | |
| 65f38f15 | 5531 | |
| 411e1bfb AM |
5532 | eh = (struct ppc_link_hash_entry *) h; |
| 5533 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 5534 | if (ent->addend == rel->r_addend | |
| e717da7e | 5535 | && ent->owner == abfd |
| 411e1bfb AM |
5536 | && ent->tls_type == tls_type) |
| 5537 | break; | |
| 5538 | if (ent == NULL) | |
| 5bd4f169 | 5539 | { |
| 411e1bfb | 5540 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5541 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 5542 | if (ent == NULL) |
| b34976b6 | 5543 | return FALSE; |
| 411e1bfb AM |
5544 | ent->next = eh->elf.got.glist; |
| 5545 | ent->addend = rel->r_addend; | |
| e717da7e | 5546 | ent->owner = abfd; |
| 411e1bfb | 5547 | ent->tls_type = tls_type; |
| 927be08e | 5548 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5549 | ent->got.refcount = 0; |
| 5550 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 5551 | } |
| 411e1bfb | 5552 | ent->got.refcount += 1; |
| e7b938ca | 5553 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5554 | } |
| 411e1bfb AM |
5555 | else |
| 5556 | /* This is a global offset table entry for a local symbol. */ | |
| 5557 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5558 | rel->r_addend, tls_type)) | |
| 5559 | return FALSE; | |
| a345bc8d AM |
5560 | |
| 5561 | /* We may also need a plt entry if the symbol turns out to be | |
| 5562 | an ifunc. */ | |
| 0e1862bb | 5563 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
| a345bc8d AM |
5564 | { |
| 5565 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5566 | return FALSE; | |
| 5567 | } | |
| 5bd4f169 AM |
5568 | break; |
| 5569 | ||
| 5bd4f169 | 5570 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5571 | case R_PPC64_PLT16_HI: |
| 5572 | case R_PPC64_PLT16_LO: | |
| 5573 | case R_PPC64_PLT32: | |
| 5574 | case R_PPC64_PLT64: | |
| cbf95972 AM |
5575 | /* This symbol requires a procedure linkage table entry. */ |
| 5576 | plt_list = ifunc; | |
| 5577 | if (h != NULL) | |
| e054468f | 5578 | { |
| e054468f AM |
5579 | h->needs_plt = 1; |
| 5580 | if (h->root.root.string[0] == '.' | |
| 5581 | && h->root.root.string[1] != '\0') | |
| 5582 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| cbf95972 AM |
5583 | plt_list = &h->plt.plist; |
| 5584 | } | |
| 5585 | if (plt_list == NULL) | |
| 5586 | { | |
| 5587 | /* It does not make sense to have a procedure linkage | |
| 5588 | table entry for a non-ifunc local symbol. */ | |
| 5589 | info->callbacks->einfo | |
| 695344c0 | 5590 | /* xgettext:c-format */ |
| 174d0a74 | 5591 | (_("%H: %s reloc against local symbol\n"), |
| cbf95972 AM |
5592 | abfd, sec, rel->r_offset, |
| 5593 | ppc64_elf_howto_table[r_type]->name); | |
| 5594 | bfd_set_error (bfd_error_bad_value); | |
| 5595 | return FALSE; | |
| e054468f | 5596 | } |
| cbf95972 AM |
5597 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
| 5598 | return FALSE; | |
| 5bd4f169 AM |
5599 | break; |
| 5600 | ||
| 5601 | /* The following relocations don't need to propagate the | |
| 5602 | relocation if linking a shared object since they are | |
| 5603 | section relative. */ | |
| 5604 | case R_PPC64_SECTOFF: | |
| 5605 | case R_PPC64_SECTOFF_LO: | |
| 5606 | case R_PPC64_SECTOFF_HI: | |
| 5607 | case R_PPC64_SECTOFF_HA: | |
| 5608 | case R_PPC64_SECTOFF_DS: | |
| 5609 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5610 | case R_PPC64_DTPREL16: |
| 5611 | case R_PPC64_DTPREL16_LO: | |
| 5612 | case R_PPC64_DTPREL16_HI: | |
| 5613 | case R_PPC64_DTPREL16_HA: | |
| 5614 | case R_PPC64_DTPREL16_DS: | |
| 5615 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
5616 | case R_PPC64_DTPREL16_HIGH: |
| 5617 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
5618 | case R_PPC64_DTPREL16_HIGHER: |
| 5619 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5620 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5621 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5622 | break; |
| 5623 | ||
| ad8e1ba5 | 5624 | /* Nor do these. */ |
| 25f23106 AM |
5625 | case R_PPC64_REL16: |
| 5626 | case R_PPC64_REL16_LO: | |
| 5627 | case R_PPC64_REL16_HI: | |
| 5628 | case R_PPC64_REL16_HA: | |
| a680de9a | 5629 | case R_PPC64_REL16DX_HA: |
| 25f23106 AM |
5630 | break; |
| 5631 | ||
| 45965137 AM |
5632 | /* Not supported as a dynamic relocation. */ |
| 5633 | case R_PPC64_ADDR64_LOCAL: | |
| 0e1862bb | 5634 | if (bfd_link_pic (info)) |
| 45965137 AM |
5635 | { |
| 5636 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 5637 | ppc_howto_init (); | |
| 695344c0 | 5638 | /* xgettext:c-format */ |
| 174d0a74 | 5639 | info->callbacks->einfo (_("%H: %s reloc unsupported " |
| 45965137 AM |
5640 | "in shared libraries and PIEs.\n"), |
| 5641 | abfd, sec, rel->r_offset, | |
| 5642 | ppc64_elf_howto_table[r_type]->name); | |
| 5643 | bfd_set_error (bfd_error_bad_value); | |
| 5644 | return FALSE; | |
| 5645 | } | |
| 5646 | break; | |
| 5647 | ||
| ad8e1ba5 | 5648 | case R_PPC64_TOC16: |
| 33c0ec9d AM |
5649 | case R_PPC64_TOC16_DS: |
| 5650 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5651 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 1a0670f3 | 5652 | /* Fall through. */ |
| ad8e1ba5 AM |
5653 | case R_PPC64_TOC16_LO: |
| 5654 | case R_PPC64_TOC16_HI: | |
| 5655 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 5656 | case R_PPC64_TOC16_LO_DS: |
| 4c52953f | 5657 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5658 | break; |
| 5659 | ||
| 006589cf AM |
5660 | /* Marker reloc. */ |
| 5661 | case R_PPC64_ENTRY: | |
| 5662 | break; | |
| 5663 | ||
| 5bd4f169 AM |
5664 | /* This relocation describes the C++ object vtable hierarchy. |
| 5665 | Reconstruct it for later use during GC. */ | |
| 5666 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5667 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5668 | return FALSE; |
| 5bd4f169 AM |
5669 | break; |
| 5670 | ||
| 5671 | /* This relocation describes which C++ vtable entries are actually | |
| 5672 | used. Record for later use during GC. */ | |
| 5673 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5674 | BFD_ASSERT (h != NULL); |
| 5675 | if (h != NULL | |
| 5676 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5677 | return FALSE; |
| 5bd4f169 AM |
5678 | break; |
| 5679 | ||
| 721956f4 AM |
5680 | case R_PPC64_REL14: |
| 5681 | case R_PPC64_REL14_BRTAKEN: | |
| 5682 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5683 | { |
| 5684 | asection *dest = NULL; | |
| 5685 | ||
| 5686 | /* Heuristic: If jumping outside our section, chances are | |
| 5687 | we are going to need a stub. */ | |
| 5688 | if (h != NULL) | |
| 5689 | { | |
| 5690 | /* If the sym is weak it may be overridden later, so | |
| 5691 | don't assume we know where a weak sym lives. */ | |
| 5692 | if (h->root.type == bfd_link_hash_defined) | |
| 5693 | dest = h->root.u.def.section; | |
| 5694 | } | |
| 5695 | else | |
| 87d72d41 AM |
5696 | { |
| 5697 | Elf_Internal_Sym *isym; | |
| 5698 | ||
| 5699 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5700 | abfd, r_symndx); | |
| 5701 | if (isym == NULL) | |
| 5702 | return FALSE; | |
| 5703 | ||
| 5704 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5705 | } | |
| 5706 | ||
| 220c76dd | 5707 | if (dest != sec) |
| 7c8fe5c4 | 5708 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5709 | } |
| 721956f4 AM |
5710 | /* Fall through. */ |
| 5711 | ||
| 5d1634d7 | 5712 | case R_PPC64_REL24: |
| cbf95972 AM |
5713 | plt_list = ifunc; |
| 5714 | if (h != NULL) | |
| 5d1634d7 | 5715 | { |
| e054468f AM |
5716 | h->needs_plt = 1; |
| 5717 | if (h->root.root.string[0] == '.' | |
| 5718 | && h->root.root.string[1] != '\0') | |
| 5719 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| cbf95972 | 5720 | |
| 3a71aa26 | 5721 | if (h == tga || h == dottga) |
| cbf95972 AM |
5722 | { |
| 5723 | sec->has_tls_reloc = 1; | |
| 5724 | if (rel != relocs | |
| 5725 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 5726 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 5727 | /* We have a new-style __tls_get_addr call with | |
| 5728 | a marker reloc. */ | |
| 5729 | ; | |
| 5730 | else | |
| 5731 | /* Mark this section as having an old-style call. */ | |
| 5732 | sec->has_tls_get_addr_call = 1; | |
| 5733 | } | |
| 5734 | plt_list = &h->plt.plist; | |
| 411e1bfb | 5735 | } |
| cbf95972 AM |
5736 | |
| 5737 | /* We may need a .plt entry if the function this reloc | |
| 5738 | refers to is in a shared lib. */ | |
| 5739 | if (plt_list | |
| 5740 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
| 5741 | return FALSE; | |
| 411e1bfb AM |
5742 | break; |
| 5743 | ||
| cbf95972 AM |
5744 | case R_PPC64_ADDR14: |
| 5745 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5746 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5747 | case R_PPC64_ADDR24: | |
| 5748 | goto dodyn; | |
| 5749 | ||
| 411e1bfb AM |
5750 | case R_PPC64_TPREL64: |
| 5751 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 0e1862bb | 5752 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
5753 | info->flags |= DF_STATIC_TLS; |
| 5754 | goto dotlstoc; | |
| 5755 | ||
| 5756 | case R_PPC64_DTPMOD64: | |
| 5757 | if (rel + 1 < rel_end | |
| 5758 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5759 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5760 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5761 | else |
| 951fd09b | 5762 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5763 | goto dotlstoc; |
| 5764 | ||
| 5765 | case R_PPC64_DTPREL64: | |
| 5766 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5767 | if (rel != relocs | |
| 5768 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5769 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5770 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5771 | Don't mark with TLS_DTPREL. */ | |
| 5772 | goto dodyn; | |
| 5773 | ||
| 5774 | dotlstoc: | |
| 5775 | sec->has_tls_reloc = 1; | |
| 5776 | if (h != NULL) | |
| 5777 | { | |
| 5778 | struct ppc_link_hash_entry *eh; | |
| 5779 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5780 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5781 | } |
| 5782 | else | |
| 5783 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5784 | rel->r_addend, tls_type)) | |
| 5785 | return FALSE; | |
| 5786 | ||
| 7c8fe5c4 AM |
5787 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5788 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5789 | { |
| 3a71aa26 AM |
5790 | bfd_size_type amt; |
| 5791 | ||
| e7b938ca | 5792 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5793 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5794 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5795 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5796 | return FALSE; | |
| 5797 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5798 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5799 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5800 | return FALSE; |
| 7c8fe5c4 AM |
5801 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5802 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5803 | } |
| 5804 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5805 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5806 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5807 | |
| 5808 | /* Mark the second slot of a GD or LD entry. | |
| 5809 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5810 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5811 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5812 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5813 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5814 | goto dodyn; |
| 5815 | ||
| 5816 | case R_PPC64_TPREL16: | |
| 5817 | case R_PPC64_TPREL16_LO: | |
| 5818 | case R_PPC64_TPREL16_HI: | |
| 5819 | case R_PPC64_TPREL16_HA: | |
| 5820 | case R_PPC64_TPREL16_DS: | |
| 5821 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
5822 | case R_PPC64_TPREL16_HIGH: |
| 5823 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
5824 | case R_PPC64_TPREL16_HIGHER: |
| 5825 | case R_PPC64_TPREL16_HIGHERA: | |
| 5826 | case R_PPC64_TPREL16_HIGHEST: | |
| 5827 | case R_PPC64_TPREL16_HIGHESTA: | |
| 0e1862bb | 5828 | if (bfd_link_pic (info)) |
| 411e1bfb | 5829 | { |
| afb93314 | 5830 | info->flags |= DF_STATIC_TLS; |
| 411e1bfb | 5831 | goto dodyn; |
| 5d1634d7 AM |
5832 | } |
| 5833 | break; | |
| 5834 | ||
| e86ce104 | 5835 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5836 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5837 | && rel + 1 < rel_end |
| 4ce794b7 | 5838 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5839 | { |
| 8387904d | 5840 | if (h != NULL) |
| 8c5b4e52 | 5841 | ((struct ppc_link_hash_entry *) h)->is_func = 1; |
| 8387904d AM |
5842 | else |
| 5843 | { | |
| 5844 | asection *s; | |
| 87d72d41 | 5845 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5846 | |
| 87d72d41 AM |
5847 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5848 | abfd, r_symndx); | |
| 5849 | if (isym == NULL) | |
| 8387904d | 5850 | return FALSE; |
| 87d72d41 AM |
5851 | |
| 5852 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5853 | if (s != NULL && s != sec) | |
| 51aecdc5 | 5854 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
| 8387904d | 5855 | } |
| 1e2f5b6e | 5856 | } |
| e86ce104 AM |
5857 | /* Fall through. */ |
| 5858 | ||
| 65f38f15 AM |
5859 | case R_PPC64_ADDR16: |
| 5860 | case R_PPC64_ADDR16_DS: | |
| 5861 | case R_PPC64_ADDR16_HA: | |
| 5862 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
5863 | case R_PPC64_ADDR16_HIGH: |
| 5864 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
5865 | case R_PPC64_ADDR16_HIGHER: |
| 5866 | case R_PPC64_ADDR16_HIGHERA: | |
| 5867 | case R_PPC64_ADDR16_HIGHEST: | |
| 5868 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5869 | case R_PPC64_ADDR16_LO: | |
| 5870 | case R_PPC64_ADDR16_LO_DS: | |
| 0e1862bb | 5871 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
| a345bc8d AM |
5872 | && rel->r_addend == 0) |
| 5873 | { | |
| 5874 | /* We may need a .plt entry if this reloc refers to a | |
| 5875 | function in a shared lib. */ | |
| 5876 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5877 | return FALSE; | |
| 5878 | h->pointer_equality_needed = 1; | |
| 5879 | } | |
| 5880 | /* Fall through. */ | |
| 5881 | ||
| 5882 | case R_PPC64_REL30: | |
| 5883 | case R_PPC64_REL32: | |
| 5884 | case R_PPC64_REL64: | |
| 65f38f15 | 5885 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5886 | case R_PPC64_UADDR16: |
| 5887 | case R_PPC64_UADDR32: | |
| 5888 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5889 | case R_PPC64_TOC: |
| 0e1862bb | 5890 | if (h != NULL && !bfd_link_pic (info)) |
| 81848ca0 | 5891 | /* We may need a copy reloc. */ |
| f5385ebf | 5892 | h->non_got_ref = 1; |
| 81848ca0 | 5893 | |
| 41bd81ab | 5894 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5895 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5896 | break; |
| e86ce104 | 5897 | |
| 65f38f15 AM |
5898 | /* If we are creating a shared library, and this is a reloc |
| 5899 | against a global symbol, or a non PC relative reloc | |
| 5900 | against a local symbol, then we need to copy the reloc | |
| 5901 | into the shared library. However, if we are linking with | |
| 5902 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5903 | global symbol which is defined in an object we are | |
| 5904 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5905 | this point we have not seen all the input files, so it is | |
| 5906 | possible that DEF_REGULAR is not set now but will be set | |
| 5907 | later (it is never cleared). In case of a weak definition, | |
| 5908 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5909 | a shared library. We account for that possibility below by | |
| f4656909 | 5910 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5911 | table entry. A similar situation occurs when creating |
| 5912 | shared libraries and symbol visibility changes render the | |
| 5913 | symbol local. | |
| 5914 | ||
| 5915 | If on the other hand, we are creating an executable, we | |
| 5916 | may need to keep relocations for symbols satisfied by a | |
| 5917 | dynamic library if we manage to avoid copy relocs for the | |
| 5918 | symbol. */ | |
| 411e1bfb | 5919 | dodyn: |
| 0e1862bb | 5920 | if ((bfd_link_pic (info) |
| 1d483afe | 5921 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 | 5922 | || (h != NULL |
| 198f1157 | 5923 | && (!SYMBOLIC_BIND (info, h) |
| 65f38f15 | 5924 | || h->root.type == bfd_link_hash_defweak |
| f5385ebf | 5925 | || !h->def_regular)))) |
| f4656909 | 5926 | || (ELIMINATE_COPY_RELOCS |
| 0e1862bb | 5927 | && !bfd_link_pic (info) |
| 65f38f15 AM |
5928 | && h != NULL |
| 5929 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 | 5930 | || !h->def_regular)) |
| 0e1862bb | 5931 | || (!bfd_link_pic (info) |
| 25f23106 | 5932 | && ifunc != NULL)) |
| 5bd4f169 | 5933 | { |
| 65f38f15 AM |
5934 | /* We must copy these reloc types into the output file. |
| 5935 | Create a reloc section in dynobj and make room for | |
| 5936 | this reloc. */ | |
| 5bd4f169 AM |
5937 | if (sreloc == NULL) |
| 5938 | { | |
| 83bac4b0 NC |
5939 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5940 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5941 | |
| 5bd4f169 | 5942 | if (sreloc == NULL) |
| 83bac4b0 | 5943 | return FALSE; |
| 5bd4f169 AM |
5944 | } |
| 5945 | ||
| 65f38f15 AM |
5946 | /* If this is a global symbol, we count the number of |
| 5947 | relocations we need for this symbol. */ | |
| 5948 | if (h != NULL) | |
| 5949 | { | |
| 19e08130 AM |
5950 | struct elf_dyn_relocs *p; |
| 5951 | struct elf_dyn_relocs **head; | |
| 5952 | ||
| ec338859 | 5953 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 19e08130 AM |
5954 | p = *head; |
| 5955 | if (p == NULL || p->sec != sec) | |
| 5956 | { | |
| 5957 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5958 | if (p == NULL) | |
| 5959 | return FALSE; | |
| 5960 | p->next = *head; | |
| 5961 | *head = p; | |
| 5962 | p->sec = sec; | |
| 5963 | p->count = 0; | |
| 5964 | p->pc_count = 0; | |
| 5965 | } | |
| 5966 | p->count += 1; | |
| 5967 | if (!must_be_dyn_reloc (info, r_type)) | |
| 5968 | p->pc_count += 1; | |
| 65f38f15 AM |
5969 | } |
| 5970 | else | |
| 5971 | { | |
| ec338859 AM |
5972 | /* Track dynamic relocs needed for local syms too. |
| 5973 | We really need local syms available to do this | |
| 5974 | easily. Oh well. */ | |
| 19e08130 AM |
5975 | struct ppc_dyn_relocs *p; |
| 5976 | struct ppc_dyn_relocs **head; | |
| 5977 | bfd_boolean is_ifunc; | |
| ec338859 | 5978 | asection *s; |
| 6edfbbad | 5979 | void *vpp; |
| 87d72d41 | 5980 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5981 | |
| 87d72d41 AM |
5982 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5983 | abfd, r_symndx); | |
| 5984 | if (isym == NULL) | |
| b34976b6 | 5985 | return FALSE; |
| ec338859 | 5986 | |
| 87d72d41 AM |
5987 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5988 | if (s == NULL) | |
| 5989 | s = sec; | |
| 5990 | ||
| 6edfbbad | 5991 | vpp = &elf_section_data (s)->local_dynrel; |
| 19e08130 AM |
5992 | head = (struct ppc_dyn_relocs **) vpp; |
| 5993 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
| 5994 | p = *head; | |
| 5995 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
| 5996 | p = p->next; | |
| 5997 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
| 5998 | { | |
| 5999 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 6000 | if (p == NULL) | |
| 6001 | return FALSE; | |
| 6002 | p->next = *head; | |
| 6003 | *head = p; | |
| 6004 | p->sec = sec; | |
| 6005 | p->ifunc = is_ifunc; | |
| 6006 | p->count = 0; | |
| 6007 | } | |
| 6008 | p->count += 1; | |
| ec338859 | 6009 | } |
| 65f38f15 | 6010 | } |
| 5bd4f169 | 6011 | break; |
| 65f38f15 AM |
6012 | |
| 6013 | default: | |
| 96e0dda4 | 6014 | break; |
| 5bd4f169 AM |
6015 | } |
| 6016 | } | |
| 6017 | ||
| b34976b6 | 6018 | return TRUE; |
| 5bd4f169 AM |
6019 | } |
| 6020 | ||
| ee67d69a AM |
6021 | /* Merge backend specific data from an object file to the output |
| 6022 | object file when linking. */ | |
| 6023 | ||
| 6024 | static bfd_boolean | |
| 50e03d47 | 6025 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
| ee67d69a | 6026 | { |
| 50e03d47 | 6027 | bfd *obfd = info->output_bfd; |
| ee67d69a AM |
6028 | unsigned long iflags, oflags; |
| 6029 | ||
| 6030 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
| 6031 | return TRUE; | |
| 6032 | ||
| 6033 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
| 6034 | return TRUE; | |
| 6035 | ||
| 50e03d47 | 6036 | if (!_bfd_generic_verify_endian_match (ibfd, info)) |
| ee67d69a AM |
6037 | return FALSE; |
| 6038 | ||
| 6039 | iflags = elf_elfheader (ibfd)->e_flags; | |
| 6040 | oflags = elf_elfheader (obfd)->e_flags; | |
| 6041 | ||
| f6c7c3e8 | 6042 | if (iflags & ~EF_PPC64_ABI) |
| ee67d69a | 6043 | { |
| 4eca0228 | 6044 | _bfd_error_handler |
| 695344c0 | 6045 | /* xgettext:c-format */ |
| ee67d69a AM |
6046 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); |
| 6047 | bfd_set_error (bfd_error_bad_value); | |
| 6048 | return FALSE; | |
| 6049 | } | |
| f6c7c3e8 | 6050 | else if (iflags != oflags && iflags != 0) |
| ee67d69a | 6051 | { |
| 4eca0228 | 6052 | _bfd_error_handler |
| 695344c0 | 6053 | /* xgettext:c-format */ |
| ee67d69a AM |
6054 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), |
| 6055 | ibfd, iflags, oflags); | |
| 6056 | bfd_set_error (bfd_error_bad_value); | |
| 6057 | return FALSE; | |
| 6058 | } | |
| 6059 | ||
| 50e03d47 | 6060 | _bfd_elf_ppc_merge_fp_attributes (ibfd, info); |
| 005d79fd | 6061 | |
| ee67d69a | 6062 | /* Merge Tag_compatibility attributes and any common GNU ones. */ |
| 50e03d47 | 6063 | _bfd_elf_merge_object_attributes (ibfd, info); |
| ee67d69a AM |
6064 | |
| 6065 | return TRUE; | |
| 6066 | } | |
| 6067 | ||
| 6068 | static bfd_boolean | |
| 6069 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
| 6070 | { | |
| 6071 | /* Print normal ELF private data. */ | |
| 6072 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 6073 | ||
| 6074 | if (elf_elfheader (abfd)->e_flags != 0) | |
| 6075 | { | |
| 6076 | FILE *file = ptr; | |
| 6077 | ||
| ee67d69a AM |
6078 | fprintf (file, _("private flags = 0x%lx:"), |
| 6079 | elf_elfheader (abfd)->e_flags); | |
| 6080 | ||
| 6081 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
| 6082 | fprintf (file, _(" [abiv%ld]"), | |
| 6083 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
| 6084 | fputc ('\n', file); | |
| 6085 | } | |
| 6086 | ||
| 6087 | return TRUE; | |
| 6088 | } | |
| 6089 | ||
| 8387904d | 6090 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| b53dfeb2 AM |
6091 | of the code entry point, and its section, which must be in the same |
| 6092 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
| 8387904d AM |
6093 | |
| 6094 | static bfd_vma | |
| 6095 | opd_entry_value (asection *opd_sec, | |
| 6096 | bfd_vma offset, | |
| 6097 | asection **code_sec, | |
| aef36ac1 AM |
6098 | bfd_vma *code_off, |
| 6099 | bfd_boolean in_code_sec) | |
| 8387904d AM |
6100 | { |
| 6101 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 6102 | Elf_Internal_Rela *relocs; |
| 8387904d | 6103 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 6104 | bfd_vma val; |
| 8387904d | 6105 | |
| 9f296da3 AM |
6106 | /* No relocs implies we are linking a --just-symbols object, or looking |
| 6107 | at a final linked executable with addr2line or somesuch. */ | |
| 4b85d634 AM |
6108 | if (opd_sec->reloc_count == 0) |
| 6109 | { | |
| 729eabd5 | 6110 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
| 3b36f7e6 | 6111 | |
| 729eabd5 AM |
6112 | if (contents == NULL) |
| 6113 | { | |
| 6114 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
| 6115 | return (bfd_vma) -1; | |
| 6116 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
| 6117 | } | |
| ee1e4ede | 6118 | |
| dbb3fbbb | 6119 | /* PR 17512: file: 64b9dfbb. */ |
| 451dfd38 | 6120 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
| dbb3fbbb NC |
6121 | return (bfd_vma) -1; |
| 6122 | ||
| 729eabd5 | 6123 | val = bfd_get_64 (opd_bfd, contents + offset); |
| aef36ac1 AM |
6124 | if (code_sec != NULL) |
| 6125 | { | |
| 6126 | asection *sec, *likely = NULL; | |
| ee1e4ede | 6127 | |
| aef36ac1 | 6128 | if (in_code_sec) |
| 4b85d634 | 6129 | { |
| aef36ac1 AM |
6130 | sec = *code_sec; |
| 6131 | if (sec->vma <= val | |
| 6132 | && val < sec->vma + sec->size) | |
| 6133 | likely = sec; | |
| 6134 | else | |
| 6135 | val = -1; | |
| 6136 | } | |
| 6137 | else | |
| 6138 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 6139 | if (sec->vma <= val | |
| 6140 | && (sec->flags & SEC_LOAD) != 0 | |
| 6141 | && (sec->flags & SEC_ALLOC) != 0) | |
| 6142 | likely = sec; | |
| 6143 | if (likely != NULL) | |
| 6144 | { | |
| 6145 | *code_sec = likely; | |
| 6146 | if (code_off != NULL) | |
| 6147 | *code_off = val - likely->vma; | |
| 4b85d634 AM |
6148 | } |
| 6149 | } | |
| aef36ac1 | 6150 | return val; |
| 4b85d634 AM |
6151 | } |
| 6152 | ||
| 0c8d6e5c | 6153 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 6154 | |
| 729eabd5 | 6155 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
| 8860955f AM |
6156 | if (relocs == NULL) |
| 6157 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 877a8638 NC |
6158 | /* PR 17512: file: df8e1fd6. */ |
| 6159 | if (relocs == NULL) | |
| 6160 | return (bfd_vma) -1; | |
| 645ea6a9 | 6161 | |
| 8387904d | 6162 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 6163 | lo = relocs; |
| 8387904d | 6164 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
| 645ea6a9 | 6165 | val = (bfd_vma) -1; |
| 8387904d AM |
6166 | while (lo < hi) |
| 6167 | { | |
| 6168 | look = lo + (hi - lo) / 2; | |
| 6169 | if (look->r_offset < offset) | |
| 6170 | lo = look + 1; | |
| 6171 | else if (look->r_offset > offset) | |
| 6172 | hi = look; | |
| 6173 | else | |
| 6174 | { | |
| 0ffa91dd NC |
6175 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 6176 | ||
| 8387904d AM |
6177 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 6178 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 6179 | { | |
| 6180 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| b53dfeb2 | 6181 | asection *sec = NULL; |
| 8387904d | 6182 | |
| b53dfeb2 AM |
6183 | if (symndx >= symtab_hdr->sh_info |
| 6184 | && elf_sym_hashes (opd_bfd) != NULL) | |
| 8387904d AM |
6185 | { |
| 6186 | struct elf_link_hash_entry **sym_hashes; | |
| 6187 | struct elf_link_hash_entry *rh; | |
| 6188 | ||
| 6189 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 6190 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 128205bb AM |
6191 | if (rh != NULL) |
| 6192 | { | |
| 6193 | rh = elf_follow_link (rh); | |
| bb854a36 AM |
6194 | if (rh->root.type != bfd_link_hash_defined |
| 6195 | && rh->root.type != bfd_link_hash_defweak) | |
| 6196 | break; | |
| 6197 | if (rh->root.u.def.section->owner == opd_bfd) | |
| b53dfeb2 | 6198 | { |
| bb854a36 AM |
6199 | val = rh->root.u.def.value; |
| 6200 | sec = rh->root.u.def.section; | |
| b53dfeb2 AM |
6201 | } |
| 6202 | } | |
| 6203 | } | |
| 6204 | ||
| 6205 | if (sec == NULL) | |
| 6206 | { | |
| 6207 | Elf_Internal_Sym *sym; | |
| 6208 | ||
| 6209 | if (symndx < symtab_hdr->sh_info) | |
| 6210 | { | |
| 6211 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 6212 | if (sym == NULL) | |
| 6213 | { | |
| 6214 | size_t symcnt = symtab_hdr->sh_info; | |
| 6215 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
| 6216 | symcnt, 0, | |
| 6217 | NULL, NULL, NULL); | |
| 6218 | if (sym == NULL) | |
| 6219 | break; | |
| 6220 | symtab_hdr->contents = (bfd_byte *) sym; | |
| 6221 | } | |
| 6222 | sym += symndx; | |
| 128205bb AM |
6223 | } |
| 6224 | else | |
| 6225 | { | |
| b53dfeb2 AM |
6226 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
| 6227 | 1, symndx, | |
| 6228 | NULL, NULL, NULL); | |
| 128205bb AM |
6229 | if (sym == NULL) |
| 6230 | break; | |
| 128205bb | 6231 | } |
| b53dfeb2 AM |
6232 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 6233 | if (sec == NULL) | |
| 6234 | break; | |
| 6235 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
| 6236 | val = sym->st_value; | |
| 8387904d | 6237 | } |
| b53dfeb2 | 6238 | |
| 8387904d AM |
6239 | val += look->r_addend; |
| 6240 | if (code_off != NULL) | |
| 6241 | *code_off = val; | |
| 6242 | if (code_sec != NULL) | |
| aef36ac1 AM |
6243 | { |
| 6244 | if (in_code_sec && *code_sec != sec) | |
| 6245 | return -1; | |
| 6246 | else | |
| 6247 | *code_sec = sec; | |
| 6248 | } | |
| b53dfeb2 | 6249 | if (sec->output_section != NULL) |
| 8387904d | 6250 | val += sec->output_section->vma + sec->output_offset; |
| 8387904d AM |
6251 | } |
| 6252 | break; | |
| 6253 | } | |
| 6254 | } | |
| 645ea6a9 | 6255 | |
| 645ea6a9 | 6256 | return val; |
| 8387904d AM |
6257 | } |
| 6258 | ||
| aef36ac1 AM |
6259 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 6260 | function size and set *CODE_OFF to the function's entry point, | |
| 6261 | otherwise return zero. */ | |
| 9f296da3 | 6262 | |
| aef36ac1 AM |
6263 | static bfd_size_type |
| 6264 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 6265 | bfd_vma *code_off) | |
| 9f296da3 | 6266 | { |
| aef36ac1 AM |
6267 | bfd_size_type size; |
| 6268 | ||
| 6269 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
| 6270 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
| 6271 | return 0; | |
| 6272 | ||
| 6273 | size = 0; | |
| 6274 | if (!(sym->flags & BSF_SYNTHETIC)) | |
| 6275 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
| 6276 | ||
| 6277 | if (strcmp (sym->section->name, ".opd") == 0) | |
| 9f296da3 | 6278 | { |
| b07bca4e AM |
6279 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
| 6280 | bfd_vma symval = sym->value; | |
| 6281 | ||
| 6282 | if (opd != NULL | |
| 6283 | && opd->adjust != NULL | |
| 6284 | && elf_section_data (sym->section)->relocs != NULL) | |
| 6285 | { | |
| 6286 | /* opd_entry_value will use cached relocs that have been | |
| 6287 | adjusted, but with raw symbols. That means both local | |
| 6288 | and global symbols need adjusting. */ | |
| 6289 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
| 6290 | if (adjust == -1) | |
| 6291 | return 0; | |
| 6292 | symval += adjust; | |
| 6293 | } | |
| 6294 | ||
| 6295 | if (opd_entry_value (sym->section, symval, | |
| aef36ac1 AM |
6296 | &sec, code_off, TRUE) == (bfd_vma) -1) |
| 6297 | return 0; | |
| 6298 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
| 6299 | symbol. This size has nothing to do with the code size of the | |
| 6300 | function, which is what we're supposed to return, but the | |
| 6301 | code size isn't available without looking up the dot-sym. | |
| 6302 | However, doing that would be a waste of time particularly | |
| 6303 | since elf_find_function will look at the dot-sym anyway. | |
| 6304 | Now, elf_find_function will keep the largest size of any | |
| 6305 | function sym found at the code address of interest, so return | |
| 6306 | 1 here to avoid it incorrectly caching a larger function size | |
| 6307 | for a small function. This does mean we return the wrong | |
| 6308 | size for a new-ABI function of size 24, but all that does is | |
| 6309 | disable caching for such functions. */ | |
| 6310 | if (size == 24) | |
| 6311 | size = 1; | |
| 9f296da3 | 6312 | } |
| aef36ac1 AM |
6313 | else |
| 6314 | { | |
| 6315 | if (sym->section != sec) | |
| 6316 | return 0; | |
| 6317 | *code_off = sym->value; | |
| 6318 | } | |
| 6319 | if (size == 0) | |
| 6320 | size = 1; | |
| 6321 | return size; | |
| 9f296da3 AM |
6322 | } |
| 6323 | ||
| f378ab09 AM |
6324 | /* Return true if symbol is a strong function defined in an ELFv2 |
| 6325 | object with st_other localentry bits of zero, ie. its local entry | |
| 6326 | point coincides with its global entry point. */ | |
| 6327 | ||
| 6328 | static bfd_boolean | |
| 6329 | is_elfv2_localentry0 (struct elf_link_hash_entry *h) | |
| 6330 | { | |
| 6331 | return (h != NULL | |
| 6332 | && h->type == STT_FUNC | |
| 6333 | && h->root.type == bfd_link_hash_defined | |
| 6334 | && (STO_PPC64_LOCAL_MASK & h->other) == 0 | |
| 6335 | && is_ppc64_elf (h->root.u.def.section->owner) | |
| 6336 | && abiversion (h->root.u.def.section->owner) >= 2); | |
| 6337 | } | |
| 6338 | ||
| 854b41e7 AM |
6339 | /* Return true if symbol is defined in a regular object file. */ |
| 6340 | ||
| 6341 | static bfd_boolean | |
| 6342 | is_static_defined (struct elf_link_hash_entry *h) | |
| 6343 | { | |
| 6344 | return ((h->root.type == bfd_link_hash_defined | |
| 6345 | || h->root.type == bfd_link_hash_defweak) | |
| 6346 | && h->root.u.def.section != NULL | |
| 6347 | && h->root.u.def.section->output_section != NULL); | |
| 6348 | } | |
| 6349 | ||
| b31867b6 AM |
6350 | /* If FDH is a function descriptor symbol, return the associated code |
| 6351 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 6352 | ||
| 6353 | static struct ppc_link_hash_entry * | |
| 6354 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 6355 | { | |
| 6356 | if (fdh->is_func_descriptor) | |
| 6357 | { | |
| 6358 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 6359 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 6360 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6361 | return fh; | |
| 6362 | } | |
| 6363 | return NULL; | |
| 6364 | } | |
| 6365 | ||
| 6366 | /* If FH is a function code entry symbol, return the associated | |
| 6367 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 6368 | ||
| 6369 | static struct ppc_link_hash_entry * | |
| 6370 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 6371 | { | |
| 6372 | if (fh->oh != NULL | |
| 6373 | && fh->oh->is_func_descriptor) | |
| 6374 | { | |
| 6375 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 6376 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 6377 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 6378 | return fdh; | |
| 6379 | } | |
| 6380 | return NULL; | |
| 6381 | } | |
| 6382 | ||
| 8c5b4e52 AM |
6383 | static bfd_boolean func_desc_adjust (struct elf_link_hash_entry *, void *); |
| 6384 | ||
| 6385 | /* Garbage collect sections, after first dealing with dot-symbols. */ | |
| 6386 | ||
| 6387 | static bfd_boolean | |
| 6388 | ppc64_elf_gc_sections (bfd *abfd, struct bfd_link_info *info) | |
| 6389 | { | |
| 6390 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6391 | ||
| 6392 | if (htab != NULL && htab->need_func_desc_adj) | |
| 6393 | { | |
| 6394 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
| 6395 | htab->need_func_desc_adj = 0; | |
| 6396 | } | |
| 6397 | return bfd_elf_gc_sections (abfd, info); | |
| 6398 | } | |
| 6399 | ||
| 74f0fb50 AM |
6400 | /* Mark all our entry sym sections, both opd and code section. */ |
| 6401 | ||
| 6402 | static void | |
| 6403 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 6404 | { | |
| 6405 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6406 | struct bfd_sym_chain *sym; | |
| 6407 | ||
| 4dfe6ac6 NC |
6408 | if (htab == NULL) |
| 6409 | return; | |
| 6410 | ||
| 74f0fb50 AM |
6411 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
| 6412 | { | |
| b31867b6 | 6413 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
6414 | asection *sec; |
| 6415 | ||
| 6416 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 6417 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
6418 | if (eh == NULL) |
| 6419 | continue; | |
| 6420 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 6421 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 6422 | continue; | |
| 6423 | ||
| b31867b6 AM |
6424 | fh = defined_code_entry (eh); |
| 6425 | if (fh != NULL) | |
| 74f0fb50 | 6426 | { |
| b31867b6 | 6427 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
6428 | sec->flags |= SEC_KEEP; |
| 6429 | } | |
| 6430 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 6431 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6432 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6433 | &sec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 AM |
6434 | sec->flags |= SEC_KEEP; |
| 6435 | ||
| 6436 | sec = eh->elf.root.u.def.section; | |
| 6437 | sec->flags |= SEC_KEEP; | |
| 6438 | } | |
| 6439 | } | |
| 6440 | ||
| 64d03ab5 AM |
6441 | /* Mark sections containing dynamically referenced symbols. When |
| 6442 | building shared libraries, we must assume that any visible symbol is | |
| 6443 | referenced. */ | |
| 6444 | ||
| 6445 | static bfd_boolean | |
| 6446 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 6447 | { | |
| 6448 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 6449 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 6450 | struct ppc_link_hash_entry *fdh; |
| b407645f | 6451 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
| 64d03ab5 | 6452 | |
| 64d03ab5 | 6453 | /* Dynamic linking info is on the func descriptor sym. */ |
| b31867b6 AM |
6454 | fdh = defined_func_desc (eh); |
| 6455 | if (fdh != NULL) | |
| 6456 | eh = fdh; | |
| 64d03ab5 AM |
6457 | |
| 6458 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 6459 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 6460 | && (eh->elf.ref_dynamic | |
| 1c9177d9 | 6461 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
| 64d03ab5 | 6462 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
| 4c58e0d8 | 6463 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
| 0e1862bb | 6464 | && (!bfd_link_executable (info) |
| e278ae05 | 6465 | || info->gc_keep_exported |
| b407645f AM |
6466 | || info->export_dynamic |
| 6467 | || (eh->elf.dynamic | |
| 6468 | && d != NULL | |
| 6469 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
| e278ae05 | 6470 | && (eh->elf.versioned >= versioned |
| 4c58e0d8 AM |
6471 | || !bfd_hide_sym_by_version (info->version_info, |
| 6472 | eh->elf.root.root.string))))) | |
| 64d03ab5 AM |
6473 | { |
| 6474 | asection *code_sec; | |
| b31867b6 | 6475 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
6476 | |
| 6477 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 6478 | ||
| 6479 | /* Function descriptor syms cause the associated | |
| 6480 | function code sym section to be marked. */ | |
| b31867b6 AM |
6481 | fh = defined_code_entry (eh); |
| 6482 | if (fh != NULL) | |
| 6483 | { | |
| 6484 | code_sec = fh->elf.root.u.def.section; | |
| 6485 | code_sec->flags |= SEC_KEEP; | |
| 6486 | } | |
| 64d03ab5 AM |
6487 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6488 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6489 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6490 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
| 64d03ab5 AM |
6491 | code_sec->flags |= SEC_KEEP; |
| 6492 | } | |
| 6493 | ||
| 6494 | return TRUE; | |
| 6495 | } | |
| 6496 | ||
| 5bd4f169 AM |
6497 | /* Return the section that should be marked against GC for a given |
| 6498 | relocation. */ | |
| 6499 | ||
| 6500 | static asection * | |
| 4ce794b7 | 6501 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 6502 | struct bfd_link_info *info, |
| 4ce794b7 AM |
6503 | Elf_Internal_Rela *rel, |
| 6504 | struct elf_link_hash_entry *h, | |
| 6505 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 6506 | { |
| ccfa59ea AM |
6507 | asection *rsec; |
| 6508 | ||
| ccfa59ea AM |
6509 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 6510 | function sections, as all functions are referenced in .opd. */ | |
| 6511 | rsec = NULL; | |
| 6512 | if (get_opd_info (sec) != NULL) | |
| 6513 | return rsec; | |
| 1e2f5b6e | 6514 | |
| 5bd4f169 AM |
6515 | if (h != NULL) |
| 6516 | { | |
| 04c9666a | 6517 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 6518 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 6519 | |
| 4ce794b7 | 6520 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 6521 | switch (r_type) |
| 5bd4f169 AM |
6522 | { |
| 6523 | case R_PPC64_GNU_VTINHERIT: | |
| 6524 | case R_PPC64_GNU_VTENTRY: | |
| 6525 | break; | |
| 6526 | ||
| 6527 | default: | |
| 6528 | switch (h->root.type) | |
| 6529 | { | |
| 6530 | case bfd_link_hash_defined: | |
| 6531 | case bfd_link_hash_defweak: | |
| ccfa59ea | 6532 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
6533 | fdh = defined_func_desc (eh); |
| 6534 | if (fdh != NULL) | |
| 8c5b4e52 AM |
6535 | { |
| 6536 | /* -mcall-aixdesc code references the dot-symbol on | |
| 6537 | a call reloc. Mark the function descriptor too | |
| 6538 | against garbage collection. */ | |
| 6539 | fdh->elf.mark = 1; | |
| 6540 | if (fdh->elf.u.weakdef != NULL) | |
| 6541 | fdh->elf.u.weakdef->mark = 1; | |
| 6542 | eh = fdh; | |
| 6543 | } | |
| 1e2f5b6e AM |
6544 | |
| 6545 | /* Function descriptor syms cause the associated | |
| 6546 | function code sym section to be marked. */ | |
| b31867b6 AM |
6547 | fh = defined_code_entry (eh); |
| 6548 | if (fh != NULL) | |
| ccfa59ea AM |
6549 | { |
| 6550 | /* They also mark their opd section. */ | |
| 74f0fb50 | 6551 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6552 | |
| b31867b6 | 6553 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 6554 | } |
| 8387904d AM |
6555 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6556 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6557 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6558 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 | 6559 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6560 | else |
| 1e2f5b6e AM |
6561 | rsec = h->root.u.def.section; |
| 6562 | break; | |
| 5bd4f169 AM |
6563 | |
| 6564 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
6565 | rsec = h->root.u.c.p->section; |
| 6566 | break; | |
| 5bd4f169 AM |
6567 | |
| 6568 | default: | |
| fb34365b | 6569 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
6570 | } |
| 6571 | } | |
| 6572 | } | |
| 6573 | else | |
| 6574 | { | |
| 74f0fb50 | 6575 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
6576 | |
| 6577 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
6578 | opd = get_opd_info (rsec); |
| 6579 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 6580 | { |
| 74f0fb50 | 6581 | rsec->gc_mark = 1; |
| ccfa59ea | 6582 | |
| 51aecdc5 | 6583 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
| ccfa59ea | 6584 | } |
| 5bd4f169 AM |
6585 | } |
| 6586 | ||
| 1e2f5b6e | 6587 | return rsec; |
| 5bd4f169 AM |
6588 | } |
| 6589 | ||
| 65f38f15 AM |
6590 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 6591 | section being removed. */ | |
| 5bd4f169 | 6592 | |
| b34976b6 | 6593 | static bfd_boolean |
| 4ce794b7 AM |
6594 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 6595 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 6596 | { |
| 411e1bfb | 6597 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
6598 | Elf_Internal_Shdr *symtab_hdr; |
| 6599 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 6600 | struct got_entry **local_got_ents; |
| 5bd4f169 | 6601 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 6602 | |
| 0e1862bb | 6603 | if (bfd_link_relocatable (info)) |
| 7dda2462 TG |
6604 | return TRUE; |
| 6605 | ||
| 680a3378 AM |
6606 | if ((sec->flags & SEC_ALLOC) == 0) |
| 6607 | return TRUE; | |
| 6608 | ||
| ec338859 AM |
6609 | elf_section_data (sec)->local_dynrel = NULL; |
| 6610 | ||
| 411e1bfb | 6611 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6612 | if (htab == NULL) |
| 6613 | return FALSE; | |
| 6614 | ||
| 0ffa91dd | 6615 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 6616 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 6617 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
6618 | |
| 6619 | relend = relocs + sec->reloc_count; | |
| 6620 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
6621 | { |
| 6622 | unsigned long r_symndx; | |
| 04c9666a | 6623 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 6624 | struct elf_link_hash_entry *h = NULL; |
| 8dea77f0 | 6625 | struct plt_entry **plt_list = NULL; |
| f961d9dd | 6626 | unsigned char tls_type = 0; |
| 5bd4f169 | 6627 | |
| a33d1f77 | 6628 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 6629 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
6630 | if (r_symndx >= symtab_hdr->sh_info) |
| 6631 | { | |
| 6632 | struct ppc_link_hash_entry *eh; | |
| 6061a67d AM |
6633 | struct elf_dyn_relocs **pp; |
| 6634 | struct elf_dyn_relocs *p; | |
| 58ac9f71 AM |
6635 | |
| 6636 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6637 | h = elf_follow_link (h); |
| 58ac9f71 AM |
6638 | eh = (struct ppc_link_hash_entry *) h; |
| 6639 | ||
| 6640 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 6641 | if (p->sec == sec) | |
| 6642 | { | |
| 6643 | /* Everything must go for SEC. */ | |
| 6644 | *pp = p->next; | |
| 6645 | break; | |
| 6646 | } | |
| 6647 | } | |
| 6648 | ||
| a33d1f77 AM |
6649 | switch (r_type) |
| 6650 | { | |
| 411e1bfb AM |
6651 | case R_PPC64_GOT_TLSLD16: |
| 6652 | case R_PPC64_GOT_TLSLD16_LO: | |
| 6653 | case R_PPC64_GOT_TLSLD16_HI: | |
| 6654 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 6655 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
6656 | goto dogot; |
| 6657 | ||
| 6658 | case R_PPC64_GOT_TLSGD16: | |
| 6659 | case R_PPC64_GOT_TLSGD16_LO: | |
| 6660 | case R_PPC64_GOT_TLSGD16_HI: | |
| 6661 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 6662 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
6663 | goto dogot; |
| 6664 | ||
| 6665 | case R_PPC64_GOT_TPREL16_DS: | |
| 6666 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 6667 | case R_PPC64_GOT_TPREL16_HI: | |
| 6668 | case R_PPC64_GOT_TPREL16_HA: | |
| 6669 | tls_type = TLS_TLS | TLS_TPREL; | |
| 6670 | goto dogot; | |
| 6671 | ||
| 6672 | case R_PPC64_GOT_DTPREL16_DS: | |
| 6673 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 6674 | case R_PPC64_GOT_DTPREL16_HI: | |
| 6675 | case R_PPC64_GOT_DTPREL16_HA: | |
| 6676 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 6677 | goto dogot; | |
| 6678 | ||
| a33d1f77 AM |
6679 | case R_PPC64_GOT16: |
| 6680 | case R_PPC64_GOT16_DS: | |
| 6681 | case R_PPC64_GOT16_HA: | |
| 6682 | case R_PPC64_GOT16_HI: | |
| 6683 | case R_PPC64_GOT16_LO: | |
| 6684 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
6685 | dogot: |
| 6686 | { | |
| 6687 | struct got_entry *ent; | |
| 6688 | ||
| 58ac9f71 AM |
6689 | if (h != NULL) |
| 6690 | ent = h->got.glist; | |
| 411e1bfb AM |
6691 | else |
| 6692 | ent = local_got_ents[r_symndx]; | |
| 6693 | ||
| 6694 | for (; ent != NULL; ent = ent->next) | |
| 6695 | if (ent->addend == rel->r_addend | |
| e717da7e | 6696 | && ent->owner == abfd |
| 411e1bfb AM |
6697 | && ent->tls_type == tls_type) |
| 6698 | break; | |
| 6699 | if (ent == NULL) | |
| 6700 | abort (); | |
| 6701 | if (ent->got.refcount > 0) | |
| 6702 | ent->got.refcount -= 1; | |
| 6703 | } | |
| 8dea77f0 AM |
6704 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
| 6705 | plt_list = &h->plt.plist; | |
| a33d1f77 | 6706 | break; |
| 65f38f15 | 6707 | |
| a33d1f77 AM |
6708 | case R_PPC64_PLT16_HA: |
| 6709 | case R_PPC64_PLT16_HI: | |
| 6710 | case R_PPC64_PLT16_LO: | |
| 6711 | case R_PPC64_PLT32: | |
| 6712 | case R_PPC64_PLT64: | |
| 721956f4 AM |
6713 | case R_PPC64_REL14: |
| 6714 | case R_PPC64_REL14_BRNTAKEN: | |
| 6715 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 6716 | case R_PPC64_REL24: |
| 58ac9f71 | 6717 | if (h != NULL) |
| cbf95972 AM |
6718 | plt_list = &h->plt.plist; |
| 6719 | else if (local_got_ents != NULL) | |
| 6720 | { | |
| 6721 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 6722 | (local_got_ents + symtab_hdr->sh_info); | |
| 6723 | unsigned char *local_got_tls_masks = (unsigned char *) | |
| 6724 | (local_plt + symtab_hdr->sh_info); | |
| 6725 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 6726 | plt_list = local_plt + r_symndx; | |
| 6727 | } | |
| 8dea77f0 | 6728 | break; |
| 411e1bfb | 6729 | |
| 8dea77f0 AM |
6730 | case R_PPC64_ADDR64: |
| 6731 | case R_PPC64_ADDR16: | |
| 6732 | case R_PPC64_ADDR16_DS: | |
| 6733 | case R_PPC64_ADDR16_HA: | |
| 6734 | case R_PPC64_ADDR16_HI: | |
| 6735 | case R_PPC64_ADDR16_HIGH: | |
| 6736 | case R_PPC64_ADDR16_HIGHA: | |
| 6737 | case R_PPC64_ADDR16_HIGHER: | |
| 6738 | case R_PPC64_ADDR16_HIGHERA: | |
| 6739 | case R_PPC64_ADDR16_HIGHEST: | |
| 6740 | case R_PPC64_ADDR16_HIGHESTA: | |
| 6741 | case R_PPC64_ADDR16_LO: | |
| 6742 | case R_PPC64_ADDR16_LO_DS: | |
| 6743 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 | |
| 6744 | && rel->r_addend == 0) | |
| 6745 | plt_list = &h->plt.plist; | |
| e86ce104 | 6746 | break; |
| 5d1634d7 | 6747 | |
| a33d1f77 AM |
6748 | default: |
| 6749 | break; | |
| 6750 | } | |
| 8dea77f0 AM |
6751 | if (plt_list != NULL) |
| 6752 | { | |
| 6753 | struct plt_entry *ent; | |
| 6754 | ||
| 6755 | for (ent = *plt_list; ent != NULL; ent = ent->next) | |
| 6756 | if (ent->addend == rel->r_addend) | |
| 6757 | break; | |
| 6758 | if (ent != NULL && ent->plt.refcount > 0) | |
| 6759 | ent->plt.refcount -= 1; | |
| 6760 | } | |
| a33d1f77 | 6761 | } |
| b34976b6 | 6762 | return TRUE; |
| 5bd4f169 AM |
6763 | } |
| 6764 | ||
| deb0e272 AM |
6765 | /* The maximum size of .sfpr. */ |
| 6766 | #define SFPR_MAX (218*4) | |
| 6767 | ||
| 6768 | struct sfpr_def_parms | |
| 6769 | { | |
| 699733f6 AM |
6770 | const char name[12]; |
| 6771 | unsigned char lo, hi; | |
| deb0e272 AM |
6772 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 6773 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 6774 | }; | |
| 6775 | ||
| a4b6fadd AM |
6776 | /* Auto-generate _save*, _rest* functions in .sfpr. |
| 6777 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
| 6778 | instead. */ | |
| deb0e272 | 6779 | |
| 4dfe6ac6 | 6780 | static bfd_boolean |
| a4b6fadd AM |
6781 | sfpr_define (struct bfd_link_info *info, |
| 6782 | const struct sfpr_def_parms *parm, | |
| 6783 | asection *stub_sec) | |
| deb0e272 AM |
6784 | { |
| 6785 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6786 | unsigned int i; | |
| 6787 | size_t len = strlen (parm->name); | |
| 6788 | bfd_boolean writing = FALSE; | |
| 699733f6 | 6789 | char sym[16]; |
| deb0e272 | 6790 | |
| 4dfe6ac6 NC |
6791 | if (htab == NULL) |
| 6792 | return FALSE; | |
| 6793 | ||
| deb0e272 AM |
6794 | memcpy (sym, parm->name, len); |
| 6795 | sym[len + 2] = 0; | |
| 6796 | ||
| 6797 | for (i = parm->lo; i <= parm->hi; i++) | |
| 6798 | { | |
| a4b6fadd | 6799 | struct ppc_link_hash_entry *h; |
| deb0e272 AM |
6800 | |
| 6801 | sym[len + 0] = i / 10 + '0'; | |
| 6802 | sym[len + 1] = i % 10 + '0'; | |
| a4b6fadd | 6803 | h = (struct ppc_link_hash_entry *) |
| b32547cd | 6804 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
| a4b6fadd | 6805 | if (stub_sec != NULL) |
| deb0e272 | 6806 | { |
| a4b6fadd AM |
6807 | if (h != NULL |
| 6808 | && h->elf.root.type == bfd_link_hash_defined | |
| 6809 | && h->elf.root.u.def.section == htab->sfpr) | |
| 6810 | { | |
| 6811 | struct elf_link_hash_entry *s; | |
| 6812 | char buf[32]; | |
| 6813 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
| 6814 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
| 6815 | if (s == NULL) | |
| 6816 | return FALSE; | |
| 6817 | if (s->root.type == bfd_link_hash_new | |
| 6818 | || (s->root.type = bfd_link_hash_defined | |
| 6819 | && s->root.u.def.section == stub_sec)) | |
| 6820 | { | |
| 6821 | s->root.type = bfd_link_hash_defined; | |
| 6822 | s->root.u.def.section = stub_sec; | |
| 6823 | s->root.u.def.value = (stub_sec->size | |
| 6824 | + h->elf.root.u.def.value); | |
| 6825 | s->ref_regular = 1; | |
| 6826 | s->def_regular = 1; | |
| 6827 | s->ref_regular_nonweak = 1; | |
| 6828 | s->forced_local = 1; | |
| 6829 | s->non_elf = 0; | |
| 6830 | s->root.linker_def = 1; | |
| 6831 | } | |
| 6832 | } | |
| 6833 | continue; | |
| 6834 | } | |
| 6835 | if (h != NULL) | |
| 6836 | { | |
| 6837 | h->save_res = 1; | |
| 6838 | if (!h->elf.def_regular) | |
| deb0e272 | 6839 | { |
| a4b6fadd AM |
6840 | h->elf.root.type = bfd_link_hash_defined; |
| 6841 | h->elf.root.u.def.section = htab->sfpr; | |
| 6842 | h->elf.root.u.def.value = htab->sfpr->size; | |
| 6843 | h->elf.type = STT_FUNC; | |
| 6844 | h->elf.def_regular = 1; | |
| b32547cd | 6845 | h->elf.non_elf = 0; |
| a4b6fadd AM |
6846 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
| 6847 | writing = TRUE; | |
| deb0e272 | 6848 | if (htab->sfpr->contents == NULL) |
| a4b6fadd AM |
6849 | { |
| 6850 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 6851 | if (htab->sfpr->contents == NULL) | |
| 6852 | return FALSE; | |
| 6853 | } | |
| deb0e272 AM |
6854 | } |
| 6855 | } | |
| 6856 | if (writing) | |
| 6857 | { | |
| 6858 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 6859 | if (i != parm->hi) | |
| 6860 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 6861 | else | |
| 6862 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 6863 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 6864 | } | |
| 6865 | } | |
| 6866 | ||
| 6867 | return TRUE; | |
| 6868 | } | |
| 6869 | ||
| 6870 | static bfd_byte * | |
| 6871 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6872 | { | |
| 6873 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6874 | return p + 4; | |
| 6875 | } | |
| 6876 | ||
| 6877 | static bfd_byte * | |
| 6878 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6879 | { | |
| 6880 | p = savegpr0 (abfd, p, r); | |
| a078d95a | 6881 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6882 | p = p + 4; |
| 6883 | bfd_put_32 (abfd, BLR, p); | |
| 6884 | return p + 4; | |
| 6885 | } | |
| 6886 | ||
| 6887 | static bfd_byte * | |
| 6888 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6889 | { | |
| 6890 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6891 | return p + 4; | |
| 6892 | } | |
| 6893 | ||
| 6894 | static bfd_byte * | |
| 6895 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6896 | { | |
| a078d95a | 6897 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6898 | p = p + 4; |
| 6899 | p = restgpr0 (abfd, p, r); | |
| 6900 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6901 | p = p + 4; | |
| 6902 | if (r == 29) | |
| 6903 | { | |
| 6904 | p = restgpr0 (abfd, p, 30); | |
| 6905 | p = restgpr0 (abfd, p, 31); | |
| 6906 | } | |
| 6907 | bfd_put_32 (abfd, BLR, p); | |
| 6908 | return p + 4; | |
| 6909 | } | |
| 6910 | ||
| 6911 | static bfd_byte * | |
| 6912 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6913 | { | |
| 6914 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6915 | return p + 4; | |
| 6916 | } | |
| 6917 | ||
| 6918 | static bfd_byte * | |
| 6919 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6920 | { | |
| 6921 | p = savegpr1 (abfd, p, r); | |
| 6922 | bfd_put_32 (abfd, BLR, p); | |
| 6923 | return p + 4; | |
| 6924 | } | |
| 6925 | ||
| 6926 | static bfd_byte * | |
| 6927 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6928 | { | |
| 6929 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6930 | return p + 4; | |
| 6931 | } | |
| 6932 | ||
| 6933 | static bfd_byte * | |
| 6934 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6935 | { | |
| 6936 | p = restgpr1 (abfd, p, r); | |
| 6937 | bfd_put_32 (abfd, BLR, p); | |
| 6938 | return p + 4; | |
| 6939 | } | |
| 6940 | ||
| 6941 | static bfd_byte * | |
| 6942 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6943 | { | |
| 6944 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6945 | return p + 4; | |
| 6946 | } | |
| 6947 | ||
| 6948 | static bfd_byte * | |
| 6949 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6950 | { | |
| 6951 | p = savefpr (abfd, p, r); | |
| a078d95a | 6952 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6953 | p = p + 4; |
| 6954 | bfd_put_32 (abfd, BLR, p); | |
| 6955 | return p + 4; | |
| 6956 | } | |
| 6957 | ||
| 6958 | static bfd_byte * | |
| 6959 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6960 | { | |
| 6961 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6962 | return p + 4; | |
| 6963 | } | |
| 6964 | ||
| 6965 | static bfd_byte * | |
| 6966 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6967 | { | |
| a078d95a | 6968 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6969 | p = p + 4; |
| 6970 | p = restfpr (abfd, p, r); | |
| 6971 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6972 | p = p + 4; | |
| 6973 | if (r == 29) | |
| 6974 | { | |
| 6975 | p = restfpr (abfd, p, 30); | |
| 6976 | p = restfpr (abfd, p, 31); | |
| 6977 | } | |
| 6978 | bfd_put_32 (abfd, BLR, p); | |
| 6979 | return p + 4; | |
| 6980 | } | |
| 6981 | ||
| 6982 | static bfd_byte * | |
| 6983 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6984 | { | |
| 6985 | p = savefpr (abfd, p, r); | |
| 6986 | bfd_put_32 (abfd, BLR, p); | |
| 6987 | return p + 4; | |
| 6988 | } | |
| 6989 | ||
| 6990 | static bfd_byte * | |
| 6991 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6992 | { | |
| 6993 | p = restfpr (abfd, p, r); | |
| 6994 | bfd_put_32 (abfd, BLR, p); | |
| 6995 | return p + 4; | |
| 6996 | } | |
| 6997 | ||
| 6998 | static bfd_byte * | |
| 6999 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 7000 | { | |
| 7001 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 7002 | p = p + 4; | |
| 7003 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 7004 | return p + 4; | |
| 7005 | } | |
| 7006 | ||
| 7007 | static bfd_byte * | |
| 7008 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 7009 | { | |
| 7010 | p = savevr (abfd, p, r); | |
| 7011 | bfd_put_32 (abfd, BLR, p); | |
| 7012 | return p + 4; | |
| 7013 | } | |
| 7014 | ||
| 7015 | static bfd_byte * | |
| 7016 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 7017 | { | |
| 7018 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 7019 | p = p + 4; | |
| 7020 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 7021 | return p + 4; | |
| 7022 | } | |
| 7023 | ||
| 7024 | static bfd_byte * | |
| 7025 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 7026 | { | |
| 7027 | p = restvr (abfd, p, r); | |
| 7028 | bfd_put_32 (abfd, BLR, p); | |
| 7029 | return p + 4; | |
| 7030 | } | |
| 7031 | ||
| e86ce104 AM |
7032 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 7033 | information on function code symbol entries to their corresponding | |
| 7034 | function descriptor symbol entries. */ | |
| deb0e272 | 7035 | |
| b34976b6 | 7036 | static bfd_boolean |
| 4ce794b7 | 7037 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 7038 | { |
| e86ce104 | 7039 | struct bfd_link_info *info; |
| 65f38f15 | 7040 | struct ppc_link_hash_table *htab; |
| 50bc7936 AM |
7041 | struct ppc_link_hash_entry *fh; |
| 7042 | struct ppc_link_hash_entry *fdh; | |
| 7043 | bfd_boolean force_local; | |
| 5bd4f169 | 7044 | |
| 50bc7936 AM |
7045 | fh = (struct ppc_link_hash_entry *) h; |
| 7046 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 7047 | return TRUE; |
| e86ce104 | 7048 | |
| 8c5b4e52 AM |
7049 | if (!fh->is_func) |
| 7050 | return TRUE; | |
| 7051 | ||
| 7052 | if (fh->elf.root.root.string[0] != '.' | |
| 7053 | || fh->elf.root.root.string[1] == '\0') | |
| 7054 | return TRUE; | |
| 7055 | ||
| 4ce794b7 | 7056 | info = inf; |
| 65f38f15 | 7057 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
7058 | if (htab == NULL) |
| 7059 | return FALSE; | |
| 5bd4f169 | 7060 | |
| 8c5b4e52 AM |
7061 | /* Find the corresponding function descriptor symbol. */ |
| 7062 | fdh = lookup_fdh (fh, htab); | |
| 7063 | ||
| c09bdfe5 AM |
7064 | /* Resolve undefined references to dot-symbols as the value |
| 7065 | in the function descriptor, if we have one in a regular object. | |
| 7066 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 7067 | in dynamic objects are handled elsewhere. */ | |
| 8c5b4e52 AM |
7068 | if ((fh->elf.root.type == bfd_link_hash_undefined |
| 7069 | || fh->elf.root.type == bfd_link_hash_undefweak) | |
| 7070 | && (fdh->elf.root.type == bfd_link_hash_defined | |
| 7071 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| b31867b6 AM |
7072 | && get_opd_info (fdh->elf.root.u.def.section) != NULL |
| 7073 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 7074 | fdh->elf.root.u.def.value, | |
| c09bdfe5 | 7075 | &fh->elf.root.u.def.section, |
| aef36ac1 | 7076 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
| c09bdfe5 | 7077 | { |
| b31867b6 | 7078 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 7079 | fh->elf.forced_local = 1; |
| b31867b6 AM |
7080 | fh->elf.def_regular = fdh->elf.def_regular; |
| 7081 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
7082 | } |
| 7083 | ||
| 8c5b4e52 AM |
7084 | if (!fh->elf.dynamic) |
| 7085 | { | |
| 7086 | struct plt_entry *ent; | |
| 5bd4f169 | 7087 | |
| 8c5b4e52 AM |
7088 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 7089 | if (ent->plt.refcount > 0) | |
| 7090 | break; | |
| 7091 | if (ent == NULL) | |
| 7092 | return TRUE; | |
| 7093 | } | |
| 5bd4f169 | 7094 | |
| 8c5b4e52 | 7095 | /* Create a descriptor as undefined if necessary. */ |
| 50bc7936 | 7096 | if (fdh == NULL |
| 0e1862bb | 7097 | && !bfd_link_executable (info) |
| 50bc7936 AM |
7098 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 7099 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 7100 | { | |
| 908b32fc | 7101 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
7102 | if (fdh == NULL) |
| 7103 | return FALSE; | |
| 50bc7936 | 7104 | } |
| 648cca2c | 7105 | |
| 8c5b4e52 | 7106 | /* We can't support overriding of symbols on a fake descriptor. */ |
| 908b32fc AM |
7107 | if (fdh != NULL |
| 7108 | && fdh->fake | |
| 8c5b4e52 AM |
7109 | && (fh->elf.root.type == bfd_link_hash_defined |
| 7110 | || fh->elf.root.type == bfd_link_hash_defweak)) | |
| 7111 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 908b32fc | 7112 | |
| 8c5b4e52 AM |
7113 | /* Transfer dynamic linking information to the function descriptor. */ |
| 7114 | if (fdh != NULL) | |
| 7115 | { | |
| f5385ebf AM |
7116 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 7117 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 7118 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 7119 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 8c5b4e52 AM |
7120 | fdh->elf.dynamic |= fh->elf.dynamic; |
| 7121 | fdh->elf.needs_plt |= (fh->elf.needs_plt | |
| 7122 | || fh->elf.type == STT_FUNC | |
| 7123 | || fh->elf.type == STT_GNU_IFUNC); | |
| 7124 | move_plt_plist (fh, fdh); | |
| 7125 | ||
| 7126 | if (!fdh->elf.forced_local | |
| 7127 | && fh->elf.dynindx != -1) | |
| 7128 | if (!bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) | |
| 7129 | return FALSE; | |
| e86ce104 AM |
7130 | } |
| 7131 | ||
| 50bc7936 AM |
7132 | /* Now that the info is on the function descriptor, clear the |
| 7133 | function code sym info. Any function code syms for which we | |
| 7134 | don't have a definition in a regular file, we force local. | |
| 7135 | This prevents a shared library from exporting syms that have | |
| 7136 | been imported from another library. Function code syms that | |
| 7137 | are really in the library we must leave global to prevent the | |
| 7138 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
7139 | force_local = (!fh->elf.def_regular |
| 7140 | || fdh == NULL | |
| 7141 | || !fdh->elf.def_regular | |
| 7142 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
7143 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 7144 | ||
| b34976b6 | 7145 | return TRUE; |
| e86ce104 | 7146 | } |
| 40b8271b | 7147 | |
| a4b6fadd AM |
7148 | static const struct sfpr_def_parms save_res_funcs[] = |
| 7149 | { | |
| 7150 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 7151 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 7152 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 7153 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 7154 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 7155 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 7156 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 7157 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 7158 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 7159 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 7160 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 7161 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 7162 | }; | |
| 7163 | ||
| e86ce104 | 7164 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
7165 | this hook to a) provide some gcc support functions, and b) transfer |
| 7166 | dynamic linking information gathered so far on function code symbol | |
| 7167 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 7168 | |
| b34976b6 | 7169 | static bfd_boolean |
| 4ce794b7 AM |
7170 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 7171 | struct bfd_link_info *info) | |
| e86ce104 AM |
7172 | { |
| 7173 | struct ppc_link_hash_table *htab; | |
| 7174 | ||
| 7175 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7176 | if (htab == NULL) |
| 7177 | return FALSE; | |
| 7178 | ||
| b32547cd AM |
7179 | /* Provide any missing _save* and _rest* functions. */ |
| 7180 | if (htab->sfpr != NULL) | |
| 7181 | { | |
| 7182 | unsigned int i; | |
| 7183 | ||
| 7184 | htab->sfpr->size = 0; | |
| 7185 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
| 7186 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
| 7187 | return FALSE; | |
| 7188 | if (htab->sfpr->size == 0) | |
| 7189 | htab->sfpr->flags |= SEC_EXCLUDE; | |
| 7190 | } | |
| 7191 | ||
| 7192 | if (bfd_link_relocatable (info)) | |
| 7193 | return TRUE; | |
| 7194 | ||
| 7195 | if (htab->elf.hgot != NULL) | |
| dba6fa9b AM |
7196 | { |
| 7197 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
| 7198 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
| 7199 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
| 43417696 AM |
7200 | if (!htab->elf.hgot->def_regular |
| 7201 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
| 7202 | { | |
| 7203 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
| 7204 | htab->elf.hgot->root.u.def.value = 0; | |
| 7205 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
| 7206 | htab->elf.hgot->def_regular = 1; | |
| 7207 | htab->elf.hgot->root.linker_def = 1; | |
| 7208 | } | |
| dba6fa9b | 7209 | htab->elf.hgot->type = STT_OBJECT; |
| dba6fa9b AM |
7210 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
| 7211 | | STV_HIDDEN); | |
| 7212 | } | |
| c66bb0ee | 7213 | |
| 8c5b4e52 AM |
7214 | if (htab->need_func_desc_adj) |
| 7215 | { | |
| 7216 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); | |
| 7217 | htab->need_func_desc_adj = 0; | |
| 7218 | } | |
| 805fc799 | 7219 | |
| b34976b6 | 7220 | return TRUE; |
| e86ce104 AM |
7221 | } |
| 7222 | ||
| 8a2058b5 AM |
7223 | /* Return true if we have dynamic relocs against H that apply to |
| 7224 | read-only sections. */ | |
| a345bc8d AM |
7225 | |
| 7226 | static bfd_boolean | |
| 7227 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
| 7228 | { | |
| 7229 | struct ppc_link_hash_entry *eh; | |
| 7230 | struct elf_dyn_relocs *p; | |
| 7231 | ||
| 7232 | eh = (struct ppc_link_hash_entry *) h; | |
| 7233 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 7234 | { | |
| 7235 | asection *s = p->sec->output_section; | |
| 7236 | ||
| 7237 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 7238 | return TRUE; | |
| 7239 | } | |
| 7240 | return FALSE; | |
| 7241 | } | |
| 7242 | ||
| d311bc8b AM |
7243 | /* Return true if we have dynamic relocs against H or any of its weak |
| 7244 | aliases, that apply to read-only sections. */ | |
| 7245 | ||
| 7246 | static bfd_boolean | |
| 7247 | alias_readonly_dynrelocs (struct elf_link_hash_entry *h) | |
| 7248 | { | |
| 7249 | struct ppc_link_hash_entry *eh; | |
| 7250 | ||
| 7251 | eh = (struct ppc_link_hash_entry *) h; | |
| 7252 | do | |
| 7253 | { | |
| 7254 | if (readonly_dynrelocs (&eh->elf)) | |
| 7255 | return TRUE; | |
| 7256 | eh = eh->weakref; | |
| 7257 | } while (eh != NULL && &eh->elf != h); | |
| 7258 | ||
| 7259 | return FALSE; | |
| 7260 | } | |
| 8a2058b5 | 7261 | |
| 8a9e8e72 AM |
7262 | /* Return whether EH has pc-relative dynamic relocs. */ |
| 7263 | ||
| 7264 | static bfd_boolean | |
| 7265 | pc_dynrelocs (struct ppc_link_hash_entry *eh) | |
| 7266 | { | |
| 7267 | struct elf_dyn_relocs *p; | |
| 7268 | ||
| 7269 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 7270 | if (p->pc_count != 0) | |
| 7271 | return TRUE; | |
| 7272 | return FALSE; | |
| 7273 | } | |
| 7274 | ||
| 8a2058b5 AM |
7275 | /* Return true if a global entry stub will be created for H. Valid |
| 7276 | for ELFv2 before plt entries have been allocated. */ | |
| 7277 | ||
| 7278 | static bfd_boolean | |
| 7279 | global_entry_stub (struct elf_link_hash_entry *h) | |
| 7280 | { | |
| 7281 | struct plt_entry *pent; | |
| 7282 | ||
| 7283 | if (!h->pointer_equality_needed | |
| 7284 | || h->def_regular) | |
| 7285 | return FALSE; | |
| 7286 | ||
| 7287 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 7288 | if (pent->plt.refcount > 0 | |
| 7289 | && pent->addend == 0) | |
| 7290 | return TRUE; | |
| 7291 | ||
| 7292 | return FALSE; | |
| 7293 | } | |
| 7294 | ||
| e86ce104 AM |
7295 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 7296 | regular object. The current definition is in some section of the | |
| 7297 | dynamic object, but we're not including those sections. We have to | |
| 7298 | change the definition to something the rest of the link can | |
| 7299 | understand. */ | |
| 7300 | ||
| b34976b6 | 7301 | static bfd_boolean |
| 4ce794b7 AM |
7302 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 7303 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
7304 | { |
| 7305 | struct ppc_link_hash_table *htab; | |
| 5474d94f | 7306 | asection *s, *srel; |
| e86ce104 AM |
7307 | |
| 7308 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7309 | if (htab == NULL) |
| 7310 | return FALSE; | |
| e86ce104 AM |
7311 | |
| 7312 | /* Deal with function syms. */ | |
| 7313 | if (h->type == STT_FUNC | |
| e054468f | 7314 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 7315 | || h->needs_plt) |
| e86ce104 AM |
7316 | { |
| 7317 | /* Clear procedure linkage table information for any symbol that | |
| 7318 | won't need a .plt entry. */ | |
| 411e1bfb AM |
7319 | struct plt_entry *ent; |
| 7320 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 7321 | if (ent->plt.refcount > 0) | |
| 7322 | break; | |
| 8387904d | 7323 | if (ent == NULL |
| e054468f AM |
7324 | || (h->type != STT_GNU_IFUNC |
| 7325 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 21d68fcd | 7326 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))) |
| a4b6fadd | 7327 | || ((struct ppc_link_hash_entry *) h)->save_res) |
| 40b8271b | 7328 | { |
| 411e1bfb | 7329 | h->plt.plist = NULL; |
| f5385ebf | 7330 | h->needs_plt = 0; |
| d1eca1e4 | 7331 | h->pointer_equality_needed = 0; |
| 40b8271b | 7332 | } |
| 8a2058b5 | 7333 | else if (abiversion (info->output_bfd) >= 2) |
| a345bc8d | 7334 | { |
| d1eca1e4 AM |
7335 | /* Taking a function's address in a read/write section |
| 7336 | doesn't require us to define the function symbol in the | |
| 7337 | executable on a global entry stub. A dynamic reloc can | |
| 8a2058b5 AM |
7338 | be used instead. The reason we prefer a few more dynamic |
| 7339 | relocs is that calling via a global entry stub costs a | |
| 7340 | few more instructions, and pointer_equality_needed causes | |
| 7341 | extra work in ld.so when resolving these symbols. */ | |
| 7342 | if (global_entry_stub (h) | |
| d311bc8b | 7343 | && !alias_readonly_dynrelocs (h)) |
| d1eca1e4 AM |
7344 | { |
| 7345 | h->pointer_equality_needed = 0; | |
| 8a2058b5 AM |
7346 | /* After adjust_dynamic_symbol, non_got_ref set in |
| 7347 | the non-pic case means that dyn_relocs for this | |
| 7348 | symbol should be discarded. */ | |
| d1eca1e4 AM |
7349 | h->non_got_ref = 0; |
| 7350 | } | |
| 7351 | ||
| a345bc8d AM |
7352 | /* If making a plt entry, then we don't need copy relocs. */ |
| 7353 | return TRUE; | |
| 7354 | } | |
| 5bd4f169 | 7355 | } |
| bbd7ec4a | 7356 | else |
| 411e1bfb | 7357 | h->plt.plist = NULL; |
| 5bd4f169 AM |
7358 | |
| 7359 | /* If this is a weak symbol, and there is a real definition, the | |
| 7360 | processor independent code will have arranged for us to see the | |
| 7361 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 7362 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 7363 | { |
| f6e332e6 AM |
7364 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 7365 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 7366 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 7367 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 7368 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 7369 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 7370 | return TRUE; |
| 5bd4f169 AM |
7371 | } |
| 7372 | ||
| 5bd4f169 AM |
7373 | /* If we are creating a shared library, we must presume that the |
| 7374 | only references to the symbol are via the global offset table. | |
| 7375 | For such cases we need not do anything here; the relocations will | |
| 7376 | be handled correctly by relocate_section. */ | |
| 0e1862bb | 7377 | if (bfd_link_pic (info)) |
| b34976b6 | 7378 | return TRUE; |
| 5bd4f169 | 7379 | |
| 65f38f15 AM |
7380 | /* If there are no references to this symbol that do not use the |
| 7381 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 7382 | if (!h->non_got_ref) |
| b34976b6 | 7383 | return TRUE; |
| 65f38f15 | 7384 | |
| b186458a | 7385 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| d93d1c80 | 7386 | if (!h->def_dynamic || !h->ref_regular || h->def_regular |
| b186458a | 7387 | |
| d93d1c80 AM |
7388 | /* If -z nocopyreloc was given, don't generate them either. */ |
| 7389 | || info->nocopyreloc | |
| a127494f | 7390 | |
| d93d1c80 AM |
7391 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 7392 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| d311bc8b | 7393 | || (ELIMINATE_COPY_RELOCS && !alias_readonly_dynrelocs (h)) |
| 65f38f15 | 7394 | |
| d93d1c80 AM |
7395 | /* Protected variables do not work with .dynbss. The copy in |
| 7396 | .dynbss won't be used by the shared library with the protected | |
| 7397 | definition for the variable. Text relocations are preferable | |
| 7398 | to an incorrect program. */ | |
| 7399 | || h->protected_def) | |
| a127494f AM |
7400 | { |
| 7401 | h->non_got_ref = 0; | |
| 7402 | return TRUE; | |
| 7403 | } | |
| 7404 | ||
| 5d35169e | 7405 | if (h->plt.plist != NULL) |
| 97b639ba AM |
7406 | { |
| 7407 | /* We should never get here, but unfortunately there are versions | |
| 7408 | of gcc out there that improperly (for this ABI) put initialized | |
| 7409 | function pointers, vtable refs and suchlike in read-only | |
| 7410 | sections. Allow them to proceed, but warn that this might | |
| 7411 | break at runtime. */ | |
| 25f53a85 | 7412 | info->callbacks->einfo |
| bc30df16 | 7413 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
| 25f53a85 | 7414 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
| 97b639ba AM |
7415 | h->root.root.string); |
| 7416 | } | |
| 5d35169e AM |
7417 | |
| 7418 | /* This is a reference to a symbol defined by a dynamic object which | |
| 7419 | is not a function. */ | |
| 7420 | ||
| 5bd4f169 AM |
7421 | /* We must allocate the symbol in our .dynbss section, which will |
| 7422 | become part of the .bss section of the executable. There will be | |
| 7423 | an entry for this symbol in the .dynsym section. The dynamic | |
| 7424 | object will contain position independent code, so all references | |
| 7425 | from the dynamic object to this symbol will go through the global | |
| 7426 | offset table. The dynamic linker will use the .dynsym entry to | |
| 7427 | determine the address it must put in the global offset table, so | |
| 7428 | both the dynamic object and the regular object will refer to the | |
| 7429 | same memory location for the variable. */ | |
| 5bd4f169 | 7430 | |
| 04c9666a AM |
7431 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 7432 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
7433 | runtime process image. We need to remember the offset into the |
| 7434 | .rela.bss section we are going to use. */ | |
| 5474d94f AM |
7435 | if ((h->root.u.def.section->flags & SEC_READONLY) != 0) |
| 7436 | { | |
| 7437 | s = htab->elf.sdynrelro; | |
| 7438 | srel = htab->elf.sreldynrelro; | |
| 7439 | } | |
| 7440 | else | |
| 7441 | { | |
| 7442 | s = htab->elf.sdynbss; | |
| 7443 | srel = htab->elf.srelbss; | |
| 7444 | } | |
| 1d7e9d18 | 7445 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 5bd4f169 | 7446 | { |
| 5474d94f | 7447 | srel->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 7448 | h->needs_copy = 1; |
| 5bd4f169 AM |
7449 | } |
| 7450 | ||
| 6cabe1ea | 7451 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
| 5bd4f169 AM |
7452 | } |
| 7453 | ||
| e86ce104 AM |
7454 | /* If given a function descriptor symbol, hide both the function code |
| 7455 | sym and the descriptor. */ | |
| 7456 | static void | |
| 4ce794b7 AM |
7457 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 7458 | struct elf_link_hash_entry *h, | |
| 7459 | bfd_boolean force_local) | |
| e86ce104 | 7460 | { |
| 34814b9f | 7461 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
7462 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 7463 | ||
| 34814b9f AM |
7464 | eh = (struct ppc_link_hash_entry *) h; |
| 7465 | if (eh->is_func_descriptor) | |
| e86ce104 | 7466 | { |
| 34814b9f | 7467 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 7468 | |
| 721956f4 | 7469 | if (fh == NULL) |
| d1329ca3 AM |
7470 | { |
| 7471 | const char *p, *q; | |
| b8ac2841 | 7472 | struct elf_link_hash_table *htab = elf_hash_table (info); |
| d1329ca3 AM |
7473 | char save; |
| 7474 | ||
| 7475 | /* We aren't supposed to use alloca in BFD because on | |
| 7476 | systems which do not have alloca the version in libiberty | |
| 7477 | calls xmalloc, which might cause the program to crash | |
| 7478 | when it runs out of memory. This function doesn't have a | |
| 7479 | return status, so there's no way to gracefully return an | |
| 7480 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
7481 | accessed; It's either a string in an ELF string table, |
| 7482 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 7483 | |
| 34814b9f | 7484 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
7485 | save = *p; |
| 7486 | *(char *) p = '.'; | |
| 34814b9f | 7487 | fh = (struct ppc_link_hash_entry *) |
| b8ac2841 | 7488 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
| d1329ca3 AM |
7489 | *(char *) p = save; |
| 7490 | ||
| 7491 | /* Unfortunately, if it so happens that the string we were | |
| 7492 | looking for was allocated immediately before this string, | |
| 7493 | then we overwrote the string terminator. That's the only | |
| 7494 | reason the lookup should fail. */ | |
| 7495 | if (fh == NULL) | |
| 7496 | { | |
| 34814b9f AM |
7497 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 7498 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 7499 | --q, --p; |
| 34814b9f AM |
7500 | if (q < eh->elf.root.root.string && *p == '.') |
| 7501 | fh = (struct ppc_link_hash_entry *) | |
| b8ac2841 | 7502 | elf_link_hash_lookup (htab, p, FALSE, FALSE, FALSE); |
| d1329ca3 AM |
7503 | } |
| 7504 | if (fh != NULL) | |
| 7505 | { | |
| 34814b9f AM |
7506 | eh->oh = fh; |
| 7507 | fh->oh = eh; | |
| d1329ca3 AM |
7508 | } |
| 7509 | } | |
| e86ce104 | 7510 | if (fh != NULL) |
| 34814b9f | 7511 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
7512 | } |
| 7513 | } | |
| 7514 | ||
| 411e1bfb | 7515 | static bfd_boolean |
| 8843416a AM |
7516 | get_sym_h (struct elf_link_hash_entry **hp, |
| 7517 | Elf_Internal_Sym **symp, | |
| 7518 | asection **symsecp, | |
| f961d9dd | 7519 | unsigned char **tls_maskp, |
| 8843416a AM |
7520 | Elf_Internal_Sym **locsymsp, |
| 7521 | unsigned long r_symndx, | |
| 7522 | bfd *ibfd) | |
| 411e1bfb | 7523 | { |
| 0ffa91dd | 7524 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
7525 | |
| 7526 | if (r_symndx >= symtab_hdr->sh_info) | |
| 7527 | { | |
| 7528 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 7529 | struct elf_link_hash_entry *h; | |
| 7530 | ||
| 7531 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 7532 | h = elf_follow_link (h); |
| 411e1bfb AM |
7533 | |
| 7534 | if (hp != NULL) | |
| 7535 | *hp = h; | |
| 7536 | ||
| 7537 | if (symp != NULL) | |
| 7538 | *symp = NULL; | |
| 7539 | ||
| 7540 | if (symsecp != NULL) | |
| 7541 | { | |
| 7542 | asection *symsec = NULL; | |
| 7543 | if (h->root.type == bfd_link_hash_defined | |
| 7544 | || h->root.type == bfd_link_hash_defweak) | |
| 7545 | symsec = h->root.u.def.section; | |
| 7546 | *symsecp = symsec; | |
| 7547 | } | |
| 7548 | ||
| e7b938ca | 7549 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7550 | { |
| 7551 | struct ppc_link_hash_entry *eh; | |
| 7552 | ||
| 7553 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 7554 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
7555 | } |
| 7556 | } | |
| 7557 | else | |
| 7558 | { | |
| 7559 | Elf_Internal_Sym *sym; | |
| 7560 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 7561 | ||
| 7562 | if (locsyms == NULL) | |
| 7563 | { | |
| 7564 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 7565 | if (locsyms == NULL) | |
| 7566 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 7567 | symtab_hdr->sh_info, | |
| 7568 | 0, NULL, NULL, NULL); | |
| 7569 | if (locsyms == NULL) | |
| 7570 | return FALSE; | |
| 7571 | *locsymsp = locsyms; | |
| 7572 | } | |
| 7573 | sym = locsyms + r_symndx; | |
| 7574 | ||
| 7575 | if (hp != NULL) | |
| 7576 | *hp = NULL; | |
| 7577 | ||
| 7578 | if (symp != NULL) | |
| 7579 | *symp = sym; | |
| 7580 | ||
| 7581 | if (symsecp != NULL) | |
| cb33740c | 7582 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 7583 | |
| e7b938ca | 7584 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7585 | { |
| 7586 | struct got_entry **lgot_ents; | |
| f961d9dd | 7587 | unsigned char *tls_mask; |
| 411e1bfb | 7588 | |
| e7b938ca | 7589 | tls_mask = NULL; |
| 411e1bfb AM |
7590 | lgot_ents = elf_local_got_ents (ibfd); |
| 7591 | if (lgot_ents != NULL) | |
| 7592 | { | |
| e054468f AM |
7593 | struct plt_entry **local_plt = (struct plt_entry **) |
| 7594 | (lgot_ents + symtab_hdr->sh_info); | |
| f961d9dd | 7595 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 7596 | (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 7597 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 7598 | } |
| e7b938ca | 7599 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
7600 | } |
| 7601 | } | |
| 7602 | return TRUE; | |
| 7603 | } | |
| 7604 | ||
| e7b938ca | 7605 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 7606 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 7607 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
7608 | |
| 7609 | static int | |
| f961d9dd | 7610 | get_tls_mask (unsigned char **tls_maskp, |
| 3a71aa26 AM |
7611 | unsigned long *toc_symndx, |
| 7612 | bfd_vma *toc_addend, | |
| 0d4792f7 | 7613 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
7614 | const Elf_Internal_Rela *rel, |
| 7615 | bfd *ibfd) | |
| 411e1bfb AM |
7616 | { |
| 7617 | unsigned long r_symndx; | |
| 0d4792f7 | 7618 | int next_r; |
| 411e1bfb AM |
7619 | struct elf_link_hash_entry *h; |
| 7620 | Elf_Internal_Sym *sym; | |
| 7621 | asection *sec; | |
| 7622 | bfd_vma off; | |
| 7623 | ||
| 7624 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 7625 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 7626 | return 0; |
| 411e1bfb | 7627 | |
| e7b938ca | 7628 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 7629 | || sec == NULL |
| 6bee8834 | 7630 | || ppc64_elf_section_data (sec) == NULL |
| 7c8fe5c4 | 7631 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 7632 | return 1; |
| 411e1bfb AM |
7633 | |
| 7634 | /* Look inside a TOC section too. */ | |
| 7635 | if (h != NULL) | |
| 7636 | { | |
| 7637 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 7638 | off = h->root.u.def.value; | |
| 7639 | } | |
| 7640 | else | |
| 7641 | off = sym->st_value; | |
| 7642 | off += rel->r_addend; | |
| 7643 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
7644 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 7645 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
7646 | if (toc_symndx != NULL) |
| 7647 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
7648 | if (toc_addend != NULL) |
| 7649 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 7650 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 7651 | return 0; | |
| 854b41e7 | 7652 | if ((h == NULL || is_static_defined (h)) |
| 0d4792f7 AM |
7653 | && (next_r == -1 || next_r == -2)) |
| 7654 | return 1 - next_r; | |
| 951fd09b | 7655 | return 1; |
| 411e1bfb AM |
7656 | } |
| 7657 | ||
| 3b421ab3 AM |
7658 | /* Find (or create) an entry in the tocsave hash table. */ |
| 7659 | ||
| 7660 | static struct tocsave_entry * | |
| 7661 | tocsave_find (struct ppc_link_hash_table *htab, | |
| 7662 | enum insert_option insert, | |
| 7663 | Elf_Internal_Sym **local_syms, | |
| 7664 | const Elf_Internal_Rela *irela, | |
| 7665 | bfd *ibfd) | |
| 7666 | { | |
| 7667 | unsigned long r_indx; | |
| 7668 | struct elf_link_hash_entry *h; | |
| 7669 | Elf_Internal_Sym *sym; | |
| 7670 | struct tocsave_entry ent, *p; | |
| 7671 | hashval_t hash; | |
| 7672 | struct tocsave_entry **slot; | |
| 7673 | ||
| 7674 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 7675 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
| 7676 | return NULL; | |
| 7677 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
| 7678 | { | |
| 4eca0228 | 7679 | _bfd_error_handler |
| 10463f39 | 7680 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation"), ibfd); |
| 3b421ab3 AM |
7681 | return NULL; |
| 7682 | } | |
| 7683 | ||
| 7684 | if (h != NULL) | |
| 7685 | ent.offset = h->root.u.def.value; | |
| 7686 | else | |
| 7687 | ent.offset = sym->st_value; | |
| 7688 | ent.offset += irela->r_addend; | |
| 7689 | ||
| 7690 | hash = tocsave_htab_hash (&ent); | |
| 7691 | slot = ((struct tocsave_entry **) | |
| 7692 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
| 7693 | if (slot == NULL) | |
| 7694 | return NULL; | |
| 7695 | ||
| 7696 | if (*slot == NULL) | |
| 7697 | { | |
| 7698 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
| 7699 | if (p == NULL) | |
| 7700 | return NULL; | |
| 7701 | *p = ent; | |
| 7702 | *slot = p; | |
| 7703 | } | |
| 7704 | return *slot; | |
| 7705 | } | |
| 7706 | ||
| 754021d0 | 7707 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 7708 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
7709 | |
| 7710 | static bfd_boolean | |
| 7711 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 7712 | { | |
| 7713 | struct ppc_link_hash_entry *eh; | |
| 7714 | asection *sym_sec; | |
| 74f0fb50 | 7715 | struct _opd_sec_data *opd; |
| 754021d0 AM |
7716 | |
| 7717 | if (h->root.type == bfd_link_hash_indirect) | |
| 7718 | return TRUE; | |
| 7719 | ||
| 754021d0 AM |
7720 | if (h->root.type != bfd_link_hash_defined |
| 7721 | && h->root.type != bfd_link_hash_defweak) | |
| 7722 | return TRUE; | |
| 7723 | ||
| 7724 | eh = (struct ppc_link_hash_entry *) h; | |
| 7725 | if (eh->adjust_done) | |
| 7726 | return TRUE; | |
| 7727 | ||
| 7728 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
7729 | opd = get_opd_info (sym_sec); |
| 7730 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 7731 | { |
| 51aecdc5 | 7732 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
| 4025353c AM |
7733 | if (adjust == -1) |
| 7734 | { | |
| 7735 | /* This entry has been deleted. */ | |
| b3fac117 | 7736 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
7737 | if (dsec == NULL) |
| 7738 | { | |
| 7739 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| dbaa2011 | 7740 | if (discarded_section (dsec)) |
| 81688140 | 7741 | { |
| b3fac117 | 7742 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
7743 | break; |
| 7744 | } | |
| 7745 | } | |
| 4025353c | 7746 | eh->elf.root.u.def.value = 0; |
| 81688140 | 7747 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
7748 | } |
| 7749 | else | |
| 7750 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
7751 | eh->adjust_done = 1; |
| 7752 | } | |
| 7753 | return TRUE; | |
| 7754 | } | |
| 7755 | ||
| 8c1d1bb8 | 7756 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 19e08130 | 7757 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
| 8c1d1bb8 AM |
7758 | have already been determined. */ |
| 7759 | ||
| 7760 | static bfd_boolean | |
| 7761 | dec_dynrel_count (bfd_vma r_info, | |
| 7762 | asection *sec, | |
| 7763 | struct bfd_link_info *info, | |
| 7764 | Elf_Internal_Sym **local_syms, | |
| 7765 | struct elf_link_hash_entry *h, | |
| 19e08130 | 7766 | Elf_Internal_Sym *sym) |
| 8c1d1bb8 AM |
7767 | { |
| 7768 | enum elf_ppc64_reloc_type r_type; | |
| 19e08130 | 7769 | asection *sym_sec = NULL; |
| 8c1d1bb8 AM |
7770 | |
| 7771 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 7772 | should be kept in sync with the code in check_relocs. */ | |
| 7773 | r_type = ELF64_R_TYPE (r_info); | |
| 7774 | switch (r_type) | |
| 7775 | { | |
| 7776 | default: | |
| 7777 | return TRUE; | |
| 7778 | ||
| 7779 | case R_PPC64_TPREL16: | |
| 7780 | case R_PPC64_TPREL16_LO: | |
| 7781 | case R_PPC64_TPREL16_HI: | |
| 7782 | case R_PPC64_TPREL16_HA: | |
| 7783 | case R_PPC64_TPREL16_DS: | |
| 7784 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
7785 | case R_PPC64_TPREL16_HIGH: |
| 7786 | case R_PPC64_TPREL16_HIGHA: | |
| 8c1d1bb8 AM |
7787 | case R_PPC64_TPREL16_HIGHER: |
| 7788 | case R_PPC64_TPREL16_HIGHERA: | |
| 7789 | case R_PPC64_TPREL16_HIGHEST: | |
| 7790 | case R_PPC64_TPREL16_HIGHESTA: | |
| 0e1862bb | 7791 | if (!bfd_link_pic (info)) |
| 8c1d1bb8 AM |
7792 | return TRUE; |
| 7793 | ||
| 7794 | case R_PPC64_TPREL64: | |
| 7795 | case R_PPC64_DTPMOD64: | |
| 7796 | case R_PPC64_DTPREL64: | |
| 7797 | case R_PPC64_ADDR64: | |
| 7798 | case R_PPC64_REL30: | |
| 7799 | case R_PPC64_REL32: | |
| 7800 | case R_PPC64_REL64: | |
| 7801 | case R_PPC64_ADDR14: | |
| 7802 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 7803 | case R_PPC64_ADDR14_BRTAKEN: | |
| 7804 | case R_PPC64_ADDR16: | |
| 7805 | case R_PPC64_ADDR16_DS: | |
| 7806 | case R_PPC64_ADDR16_HA: | |
| 7807 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
7808 | case R_PPC64_ADDR16_HIGH: |
| 7809 | case R_PPC64_ADDR16_HIGHA: | |
| 8c1d1bb8 AM |
7810 | case R_PPC64_ADDR16_HIGHER: |
| 7811 | case R_PPC64_ADDR16_HIGHERA: | |
| 7812 | case R_PPC64_ADDR16_HIGHEST: | |
| 7813 | case R_PPC64_ADDR16_HIGHESTA: | |
| 7814 | case R_PPC64_ADDR16_LO: | |
| 7815 | case R_PPC64_ADDR16_LO_DS: | |
| 7816 | case R_PPC64_ADDR24: | |
| 7817 | case R_PPC64_ADDR32: | |
| 7818 | case R_PPC64_UADDR16: | |
| 7819 | case R_PPC64_UADDR32: | |
| 7820 | case R_PPC64_UADDR64: | |
| 7821 | case R_PPC64_TOC: | |
| 7822 | break; | |
| 7823 | } | |
| 7824 | ||
| 7825 | if (local_syms != NULL) | |
| 7826 | { | |
| 7827 | unsigned long r_symndx; | |
| 8c1d1bb8 AM |
7828 | bfd *ibfd = sec->owner; |
| 7829 | ||
| 7830 | r_symndx = ELF64_R_SYM (r_info); | |
| 7831 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 7832 | return FALSE; | |
| 7833 | } | |
| 7834 | ||
| 0e1862bb | 7835 | if ((bfd_link_pic (info) |
| 1d483afe | 7836 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 | 7837 | || (h != NULL |
| 198f1157 | 7838 | && (!SYMBOLIC_BIND (info, h) |
| 8c1d1bb8 AM |
7839 | || h->root.type == bfd_link_hash_defweak |
| 7840 | || !h->def_regular)))) | |
| 7841 | || (ELIMINATE_COPY_RELOCS | |
| 0e1862bb | 7842 | && !bfd_link_pic (info) |
| 8c1d1bb8 AM |
7843 | && h != NULL |
| 7844 | && (h->root.type == bfd_link_hash_defweak | |
| 7845 | || !h->def_regular))) | |
| 7846 | ; | |
| 7847 | else | |
| 7848 | return TRUE; | |
| 7849 | ||
| 7850 | if (h != NULL) | |
| 6edfbbad | 7851 | { |
| 19e08130 AM |
7852 | struct elf_dyn_relocs *p; |
| 7853 | struct elf_dyn_relocs **pp; | |
| 7854 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 7855 | ||
| 7856 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 7857 | with local syms for a given section. Also, symbol flags are | |
| 7858 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
| 7859 | report a dynreloc miscount. */ | |
| 7860 | if (*pp == NULL && info->gc_sections) | |
| 7861 | return TRUE; | |
| 7862 | ||
| 7863 | while ((p = *pp) != NULL) | |
| 60124e18 | 7864 | { |
| 19e08130 AM |
7865 | if (p->sec == sec) |
| 7866 | { | |
| 7867 | if (!must_be_dyn_reloc (info, r_type)) | |
| 7868 | p->pc_count -= 1; | |
| 7869 | p->count -= 1; | |
| 7870 | if (p->count == 0) | |
| 7871 | *pp = p->next; | |
| 7872 | return TRUE; | |
| 7873 | } | |
| 7874 | pp = &p->next; | |
| 60124e18 | 7875 | } |
| 6edfbbad | 7876 | } |
| 19e08130 AM |
7877 | else |
| 7878 | { | |
| 7879 | struct ppc_dyn_relocs *p; | |
| 7880 | struct ppc_dyn_relocs **pp; | |
| 7881 | void *vpp; | |
| 7882 | bfd_boolean is_ifunc; | |
| 8c1d1bb8 | 7883 | |
| 19e08130 AM |
7884 | if (local_syms == NULL) |
| 7885 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 7886 | if (sym_sec == NULL) | |
| 7887 | sym_sec = sec; | |
| c57da1a7 | 7888 | |
| 19e08130 AM |
7889 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
| 7890 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 7891 | ||
| 7892 | if (*pp == NULL && info->gc_sections) | |
| 7893 | return TRUE; | |
| 7894 | ||
| 7895 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
| 7896 | while ((p = *pp) != NULL) | |
| 8c1d1bb8 | 7897 | { |
| 19e08130 AM |
7898 | if (p->sec == sec && p->ifunc == is_ifunc) |
| 7899 | { | |
| 7900 | p->count -= 1; | |
| 7901 | if (p->count == 0) | |
| 7902 | *pp = p->next; | |
| 7903 | return TRUE; | |
| 7904 | } | |
| 7905 | pp = &p->next; | |
| 8c1d1bb8 | 7906 | } |
| 8c1d1bb8 AM |
7907 | } |
| 7908 | ||
| 695344c0 | 7909 | /* xgettext:c-format */ |
| 8de848d8 | 7910 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
| 25f53a85 | 7911 | sec->owner, sec); |
| 8c1d1bb8 AM |
7912 | bfd_set_error (bfd_error_bad_value); |
| 7913 | return FALSE; | |
| 7914 | } | |
| 7915 | ||
| 754021d0 AM |
7916 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 7917 | only remove those associated with functions in discarded link-once | |
| 7918 | sections, or weakly defined functions that have been overridden. It | |
| 7919 | would be possible to remove many more entries for statically linked | |
| 7920 | applications. */ | |
| 7921 | ||
| b34976b6 | 7922 | bfd_boolean |
| e7d1c40c | 7923 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
| 1e2f5b6e AM |
7924 | { |
| 7925 | bfd *ibfd; | |
| 754021d0 | 7926 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 7927 | asection *need_pad = NULL; |
| e7d1c40c AM |
7928 | struct ppc_link_hash_table *htab; |
| 7929 | ||
| 7930 | htab = ppc_hash_table (info); | |
| 7931 | if (htab == NULL) | |
| 7932 | return FALSE; | |
| 1e2f5b6e | 7933 | |
| c72f2fb2 | 7934 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 1e2f5b6e AM |
7935 | { |
| 7936 | asection *sec; | |
| 7937 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 7938 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 7939 | Elf_Internal_Sym *local_syms; |
| 74f0fb50 | 7940 | struct _opd_sec_data *opd; |
| 51aecdc5 | 7941 | bfd_boolean need_edit, add_aux_fields, broken; |
| 3f764659 | 7942 | bfd_size_type cnt_16b = 0; |
| 1e2f5b6e | 7943 | |
| 854b41e7 AM |
7944 | if (!is_ppc64_elf (ibfd)) |
| 7945 | continue; | |
| 7946 | ||
| 1e2f5b6e | 7947 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
| 46de2a7c | 7948 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
7949 | continue; |
| 7950 | ||
| dbaa2011 | 7951 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4b85d634 AM |
7952 | continue; |
| 7953 | ||
| 1e2f5b6e AM |
7954 | if (sec->output_section == bfd_abs_section_ptr) |
| 7955 | continue; | |
| 7956 | ||
| 7957 | /* Look through the section relocs. */ | |
| 7958 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 7959 | continue; | |
| 7960 | ||
| 6cdc0ccc | 7961 | local_syms = NULL; |
| 0ffa91dd | 7962 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
7963 | |
| 7964 | /* Read the relocations. */ | |
| 4ce794b7 | 7965 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 7966 | info->keep_memory); |
| 1e2f5b6e | 7967 | if (relstart == NULL) |
| b34976b6 | 7968 | return FALSE; |
| 1e2f5b6e AM |
7969 | |
| 7970 | /* First run through the relocs to check they are sane, and to | |
| 7971 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 7972 | need_edit = FALSE; |
| 51aecdc5 | 7973 | broken = FALSE; |
| 3f764659 | 7974 | need_pad = sec; |
| 1e2f5b6e | 7975 | relend = relstart + sec->reloc_count; |
| 50bc7936 | 7976 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7977 | { |
| 04c9666a | 7978 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
7979 | unsigned long r_symndx; |
| 7980 | asection *sym_sec; | |
| 7981 | struct elf_link_hash_entry *h; | |
| 7982 | Elf_Internal_Sym *sym; | |
| 51aecdc5 | 7983 | bfd_vma offset; |
| 1e2f5b6e | 7984 | |
| 51aecdc5 | 7985 | /* .opd contains an array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
7986 | only interested in the reloc pointing to a function entry |
| 7987 | point. */ | |
| 51aecdc5 AM |
7988 | offset = rel->r_offset; |
| 7989 | if (rel + 1 == relend | |
| 7990 | || rel[1].r_offset != offset + 8) | |
| 1e2f5b6e AM |
7991 | { |
| 7992 | /* If someone messes with .opd alignment then after a | |
| 7993 | "ld -r" we might have padding in the middle of .opd. | |
| 7994 | Also, there's nothing to prevent someone putting | |
| 7995 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 7996 | optimization for them! */ |
| 3f764659 | 7997 | broken_opd: |
| 4eca0228 | 7998 | _bfd_error_handler |
| d003868e | 7999 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| 51aecdc5 | 8000 | broken = TRUE; |
| 1e2f5b6e AM |
8001 | break; |
| 8002 | } | |
| 8003 | ||
| 50bc7936 AM |
8004 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 8005 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 8006 | { | |
| 4eca0228 | 8007 | _bfd_error_handler |
| 695344c0 | 8008 | /* xgettext:c-format */ |
| d003868e AM |
8009 | (_("%B: unexpected reloc type %u in .opd section"), |
| 8010 | ibfd, r_type); | |
| 51aecdc5 | 8011 | broken = TRUE; |
| 50bc7936 AM |
8012 | break; |
| 8013 | } | |
| 8014 | ||
| 1e2f5b6e | 8015 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
8016 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 8017 | r_symndx, ibfd)) | |
| 50bc7936 | 8018 | goto error_ret; |
| 1e2f5b6e AM |
8019 | |
| 8020 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 8021 | { | |
| 411e1bfb AM |
8022 | const char *sym_name; |
| 8023 | if (h != NULL) | |
| 8024 | sym_name = h->root.root.string; | |
| 8025 | else | |
| 26c61ae5 L |
8026 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 8027 | sym_sec); | |
| 411e1bfb | 8028 | |
| 4eca0228 | 8029 | _bfd_error_handler |
| 695344c0 | 8030 | /* xgettext:c-format */ |
| d003868e AM |
8031 | (_("%B: undefined sym `%s' in .opd section"), |
| 8032 | ibfd, sym_name); | |
| 51aecdc5 | 8033 | broken = TRUE; |
| 1e2f5b6e AM |
8034 | break; |
| 8035 | } | |
| 8036 | ||
| 51020317 AM |
8037 | /* opd entries are always for functions defined in the |
| 8038 | current input bfd. If the symbol isn't defined in the | |
| 8039 | input bfd, then we won't be using the function in this | |
| 8040 | bfd; It must be defined in a linkonce section in another | |
| 8041 | bfd, or is weak. It's also possible that we are | |
| 8042 | discarding the function due to a linker script /DISCARD/, | |
| 8043 | which we test for via the output_section. */ | |
| 8044 | if (sym_sec->owner != ibfd | |
| 8045 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 8046 | need_edit = TRUE; |
| 1e2f5b6e | 8047 | |
| 50bc7936 | 8048 | rel += 2; |
| 51aecdc5 AM |
8049 | if (rel + 1 == relend |
| 8050 | || (rel + 2 < relend | |
| 8051 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
| 8052 | ++rel; | |
| 8053 | ||
| 8054 | if (rel == relend) | |
| 3f764659 JJ |
8055 | { |
| 8056 | if (sec->size == offset + 24) | |
| 8057 | { | |
| 8058 | need_pad = NULL; | |
| 8059 | break; | |
| 8060 | } | |
| 51aecdc5 | 8061 | if (sec->size == offset + 16) |
| 3f764659 JJ |
8062 | { |
| 8063 | cnt_16b++; | |
| 8064 | break; | |
| 8065 | } | |
| 8066 | goto broken_opd; | |
| 8067 | } | |
| 3f764659 JJ |
8068 | else if (rel + 1 < relend |
| 8069 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 8070 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 8071 | { | |
| 51aecdc5 AM |
8072 | if (rel[0].r_offset == offset + 16) |
| 8073 | cnt_16b++; | |
| 8074 | else if (rel[0].r_offset != offset + 24) | |
| 8075 | goto broken_opd; | |
| 3f764659 JJ |
8076 | } |
| 8077 | else | |
| 8078 | goto broken_opd; | |
| 1e2f5b6e AM |
8079 | } |
| 8080 | ||
| e7d1c40c | 8081 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
| 3f764659 | 8082 | |
| 51aecdc5 | 8083 | if (!broken && (need_edit || add_aux_fields)) |
| 1e2f5b6e AM |
8084 | { |
| 8085 | Elf_Internal_Rela *write_rel; | |
| d4730f92 | 8086 | Elf_Internal_Shdr *rel_hdr; |
| 1e2f5b6e | 8087 | bfd_byte *rptr, *wptr; |
| 983bddc8 | 8088 | bfd_byte *new_contents; |
| 74f0fb50 AM |
8089 | bfd_size_type amt; |
| 8090 | ||
| 983bddc8 | 8091 | new_contents = NULL; |
| 51aecdc5 | 8092 | amt = OPD_NDX (sec->size) * sizeof (long); |
| 74f0fb50 | 8093 | opd = &ppc64_elf_section_data (sec)->u.opd; |
| 33c0ec9d | 8094 | opd->adjust = bfd_zalloc (sec->owner, amt); |
| 74f0fb50 AM |
8095 | if (opd->adjust == NULL) |
| 8096 | return FALSE; | |
| 8097 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
8098 | |
| 8099 | /* This seems a waste of time as input .opd sections are all | |
| 8100 | zeros as generated by gcc, but I suppose there's no reason | |
| 8101 | this will always be so. We might start putting something in | |
| 8102 | the third word of .opd entries. */ | |
| 8103 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 8104 | { | |
| eea6121a AM |
8105 | bfd_byte *loc; |
| 8106 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 8107 | { |
| eea6121a AM |
8108 | if (loc != NULL) |
| 8109 | free (loc); | |
| 50bc7936 | 8110 | error_ret: |
| 6cdc0ccc AM |
8111 | if (local_syms != NULL |
| 8112 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8113 | free (local_syms); | |
| 6cdc0ccc AM |
8114 | if (elf_section_data (sec)->relocs != relstart) |
| 8115 | free (relstart); | |
| b34976b6 | 8116 | return FALSE; |
| 6cdc0ccc | 8117 | } |
| 1e2f5b6e AM |
8118 | sec->contents = loc; |
| 8119 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 8120 | } | |
| 8121 | ||
| 8122 | elf_section_data (sec)->relocs = relstart; | |
| 8123 | ||
| 3f764659 | 8124 | new_contents = sec->contents; |
| 3f764659 JJ |
8125 | if (add_aux_fields) |
| 8126 | { | |
| 8127 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 8128 | if (new_contents == NULL) | |
| 8129 | return FALSE; | |
| 51aecdc5 | 8130 | need_pad = NULL; |
| 3f764659 | 8131 | } |
| b4f4e59f AM |
8132 | wptr = new_contents; |
| 8133 | rptr = sec->contents; | |
| 1e2f5b6e | 8134 | write_rel = relstart; |
| 51aecdc5 | 8135 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 8136 | { |
| 50bc7936 AM |
8137 | unsigned long r_symndx; |
| 8138 | asection *sym_sec; | |
| 8139 | struct elf_link_hash_entry *h; | |
| 51aecdc5 | 8140 | struct ppc_link_hash_entry *fdh = NULL; |
| 50bc7936 | 8141 | Elf_Internal_Sym *sym; |
| 51aecdc5 AM |
8142 | long opd_ent_size; |
| 8143 | Elf_Internal_Rela *next_rel; | |
| 8144 | bfd_boolean skip; | |
| 50bc7936 AM |
8145 | |
| 8146 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8147 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 8148 | r_symndx, ibfd)) |
| 50bc7936 AM |
8149 | goto error_ret; |
| 8150 | ||
| 51aecdc5 AM |
8151 | next_rel = rel + 2; |
| 8152 | if (next_rel + 1 == relend | |
| 8153 | || (next_rel + 2 < relend | |
| 8154 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
| 8155 | ++next_rel; | |
| 8156 | ||
| 8157 | /* See if the .opd entry is full 24 byte or | |
| 8158 | 16 byte (with fd_aux entry overlapped with next | |
| 8159 | fd_func). */ | |
| 8160 | opd_ent_size = 24; | |
| 8161 | if (next_rel == relend) | |
| 1e2f5b6e | 8162 | { |
| 51aecdc5 | 8163 | if (sec->size == rel->r_offset + 16) |
| 3f764659 | 8164 | opd_ent_size = 16; |
| 51aecdc5 AM |
8165 | } |
| 8166 | else if (next_rel->r_offset == rel->r_offset + 16) | |
| 8167 | opd_ent_size = 16; | |
| 3f764659 | 8168 | |
| 51aecdc5 AM |
8169 | if (h != NULL |
| 8170 | && h->root.root.string[0] == '.') | |
| 8171 | { | |
| 8c5b4e52 AM |
8172 | fdh = ((struct ppc_link_hash_entry *) h)->oh; |
| 8173 | if (fdh != NULL) | |
| 8174 | { | |
| 8175 | fdh = ppc_follow_link (fdh); | |
| 8176 | if (fdh->elf.root.type != bfd_link_hash_defined | |
| 8177 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 8178 | fdh = NULL; | |
| 8179 | } | |
| 51aecdc5 | 8180 | } |
| 1e2f5b6e | 8181 | |
| 51aecdc5 AM |
8182 | skip = (sym_sec->owner != ibfd |
| 8183 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| 8184 | if (skip) | |
| 8185 | { | |
| 8186 | if (fdh != NULL && sym_sec->owner == ibfd) | |
| a4aa0fb7 | 8187 | { |
| 51aecdc5 AM |
8188 | /* Arrange for the function descriptor sym |
| 8189 | to be dropped. */ | |
| 8190 | fdh->elf.root.u.def.value = 0; | |
| 8191 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 8192 | } |
| 51aecdc5 | 8193 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
| 1e2f5b6e | 8194 | |
| 0e1862bb | 8195 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
| 51aecdc5 AM |
8196 | rel = next_rel; |
| 8197 | else | |
| 8198 | while (1) | |
| 8199 | { | |
| 8200 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 8201 | NULL, h, sym)) | |
| 8202 | goto error_ret; | |
| 754021d0 | 8203 | |
| 51aecdc5 AM |
8204 | if (++rel == next_rel) |
| 8205 | break; | |
| 1e2f5b6e | 8206 | |
| 51aecdc5 AM |
8207 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8208 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8209 | r_symndx, ibfd)) | |
| 8210 | goto error_ret; | |
| 8211 | } | |
| 50bc7936 AM |
8212 | } |
| 8213 | else | |
| 1e2f5b6e | 8214 | { |
| 51aecdc5 AM |
8215 | /* We'll be keeping this opd entry. */ |
| 8216 | long adjust; | |
| 8217 | ||
| 8218 | if (fdh != NULL) | |
| 8219 | { | |
| 8220 | /* Redefine the function descriptor symbol to | |
| 8221 | this location in the opd section. It is | |
| 8222 | necessary to update the value here rather | |
| 8223 | than using an array of adjustments as we do | |
| 8224 | for local symbols, because various places | |
| 8225 | in the generic ELF code use the value | |
| 8226 | stored in u.def.value. */ | |
| 8227 | fdh->elf.root.u.def.value = wptr - new_contents; | |
| 8228 | fdh->adjust_done = 1; | |
| 8229 | } | |
| 8230 | ||
| 8231 | /* Local syms are a bit tricky. We could | |
| 8232 | tweak them as they can be cached, but | |
| 8233 | we'd need to look through the local syms | |
| 8234 | for the function descriptor sym which we | |
| 8235 | don't have at the moment. So keep an | |
| 8236 | array of adjustments. */ | |
| 8237 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
| 8238 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
| 8239 | ||
| 8240 | if (wptr != rptr) | |
| 8241 | memcpy (wptr, rptr, opd_ent_size); | |
| 8242 | wptr += opd_ent_size; | |
| 8243 | if (add_aux_fields && opd_ent_size == 16) | |
| 8244 | { | |
| 8245 | memset (wptr, '\0', 8); | |
| 8246 | wptr += 8; | |
| 8247 | } | |
| 8248 | ||
| 50bc7936 | 8249 | /* We need to adjust any reloc offsets to point to the |
| 51aecdc5 AM |
8250 | new opd entries. */ |
| 8251 | for ( ; rel != next_rel; ++rel) | |
| 8252 | { | |
| 8253 | rel->r_offset += adjust; | |
| 8254 | if (write_rel != rel) | |
| 8255 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 8256 | ++write_rel; | |
| 8257 | } | |
| 1e2f5b6e | 8258 | } |
| 51aecdc5 AM |
8259 | |
| 8260 | rptr += opd_ent_size; | |
| 1e2f5b6e AM |
8261 | } |
| 8262 | ||
| 3f764659 | 8263 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 8264 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
8265 | if (add_aux_fields) |
| 8266 | { | |
| 8267 | free (sec->contents); | |
| 8268 | sec->contents = new_contents; | |
| 8269 | } | |
| 8270 | ||
| 05bf9422 | 8271 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 | 8272 | elf_bfd_final_link if we are emitting relocs. */ |
| d4730f92 BS |
8273 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
| 8274 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
| 754021d0 | 8275 | some_edited = TRUE; |
| 1e2f5b6e | 8276 | } |
| 6cdc0ccc | 8277 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 8278 | free (relstart); |
| 6cdc0ccc | 8279 | |
| 411e1bfb AM |
8280 | if (local_syms != NULL |
| 8281 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8282 | { | |
| 8283 | if (!info->keep_memory) | |
| 8284 | free (local_syms); | |
| 8285 | else | |
| 8286 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 8287 | } | |
| 8288 | } | |
| 8289 | ||
| 754021d0 AM |
8290 | if (some_edited) |
| 8291 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 8292 | ||
| 3f764659 JJ |
8293 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 8294 | long, add a 8 byte padding after it. */ | |
| 0e1862bb | 8295 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
| 3f764659 JJ |
8296 | { |
| 8297 | bfd_byte *p; | |
| 8298 | ||
| 8299 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 8300 | { | |
| 8301 | BFD_ASSERT (need_pad->size > 0); | |
| 8302 | ||
| 8303 | p = bfd_malloc (need_pad->size + 8); | |
| 8304 | if (p == NULL) | |
| 8305 | return FALSE; | |
| 699733f6 | 8306 | |
| 3f764659 JJ |
8307 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 8308 | p, 0, need_pad->size)) | |
| 8309 | return FALSE; | |
| 8310 | ||
| 8311 | need_pad->contents = p; | |
| 8312 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 8313 | } | |
| 8314 | else | |
| 8315 | { | |
| 8316 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 8317 | if (p == NULL) | |
| 8318 | return FALSE; | |
| 8319 | ||
| 8320 | need_pad->contents = p; | |
| 8321 | } | |
| 8322 | ||
| 8323 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 8324 | need_pad->size += 8; | |
| 8325 | } | |
| 8326 | ||
| 411e1bfb AM |
8327 | return TRUE; |
| 8328 | } | |
| 8329 | ||
| e1918d23 | 8330 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 8331 | |
| e1918d23 | 8332 | asection * |
| e7d1c40c | 8333 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
| 411e1bfb | 8334 | { |
| 411e1bfb AM |
8335 | struct ppc_link_hash_table *htab; |
| 8336 | ||
| 411e1bfb | 8337 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8338 | if (htab == NULL) |
| 8339 | return NULL; | |
| 8340 | ||
| ee67d69a AM |
8341 | if (abiversion (info->output_bfd) == 1) |
| 8342 | htab->opd_abi = 1; | |
| 8343 | ||
| e7d1c40c | 8344 | if (htab->params->no_multi_toc) |
| 33c0ec9d AM |
8345 | htab->do_multi_toc = 0; |
| 8346 | else if (!htab->do_multi_toc) | |
| e7d1c40c | 8347 | htab->params->no_multi_toc = 1; |
| 33c0ec9d | 8348 | |
| f378ab09 AM |
8349 | if (htab->params->plt_localentry0 < 0) |
| 8350 | htab->params->plt_localentry0 | |
| 8351 | = elf_link_hash_lookup (&htab->elf, "GLIBC_2.26", | |
| 8352 | FALSE, FALSE, FALSE) != NULL; | |
| 8353 | ||
| 3a71aa26 AM |
8354 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 8355 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 8356 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
8357 | /* Move dynamic linking info to the function descriptor sym. */ |
| 8358 | if (htab->tls_get_addr != NULL) | |
| 8359 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
8360 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 8361 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 8362 | FALSE, FALSE, TRUE)); | |
| 7c9cf415 | 8363 | if (htab->params->tls_get_addr_opt) |
| a7f2871e AM |
8364 | { |
| 8365 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 8366 | ||
| 8367 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 8368 | FALSE, FALSE, TRUE); | |
| 8369 | if (opt != NULL) | |
| 8370 | func_desc_adjust (opt, info); | |
| 8371 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 8372 | FALSE, FALSE, TRUE); | |
| 8373 | if (opt_fd != NULL | |
| 8374 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 8375 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 8376 | { | |
| 8377 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 8378 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 8379 | be calling __tls_get_addr via a plt call stub, then | |
| 8380 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 8381 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 8382 | if (htab->elf.dynamic_sections_created | |
| 8383 | && tga_fd != NULL | |
| 8384 | && (tga_fd->type == STT_FUNC | |
| 8385 | || tga_fd->needs_plt) | |
| 8386 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 21d68fcd | 8387 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, tga_fd))) |
| a7f2871e AM |
8388 | { |
| 8389 | struct plt_entry *ent; | |
| 8390 | ||
| 8391 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 8392 | if (ent->plt.refcount > 0) | |
| 8393 | break; | |
| 8394 | if (ent != NULL) | |
| 8395 | { | |
| 8396 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 8397 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 8398 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| b531344c | 8399 | opt_fd->mark = 1; |
| a7f2871e AM |
8400 | if (opt_fd->dynindx != -1) |
| 8401 | { | |
| 8402 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 8403 | opt_fd->dynindx = -1; | |
| 8404 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 8405 | opt_fd->dynstr_index); | |
| 8406 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 854b41e7 | 8407 | return NULL; |
| a7f2871e AM |
8408 | } |
| 8409 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 8410 | tga = &htab->tls_get_addr->elf; | |
| 8411 | if (opt != NULL && tga != NULL) | |
| 8412 | { | |
| 8413 | tga->root.type = bfd_link_hash_indirect; | |
| 8414 | tga->root.u.i.link = &opt->root; | |
| 8415 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| b531344c | 8416 | opt->mark = 1; |
| a7f2871e AM |
8417 | _bfd_elf_link_hash_hide_symbol (info, opt, |
| 8418 | tga->forced_local); | |
| 8419 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 8420 | } | |
| 8421 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 8422 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 8423 | if (htab->tls_get_addr != NULL) | |
| 8424 | { | |
| 8425 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 8426 | htab->tls_get_addr->is_func = 1; | |
| 8427 | } | |
| 8428 | } | |
| 8429 | } | |
| 8430 | } | |
| 7c9cf415 AM |
8431 | else if (htab->params->tls_get_addr_opt < 0) |
| 8432 | htab->params->tls_get_addr_opt = 0; | |
| a7f2871e | 8433 | } |
| 33c0ec9d | 8434 | return _bfd_elf_tls_setup (info->output_bfd, info); |
| 3a71aa26 | 8435 | } |
| 8387904d | 8436 | |
| 3a71aa26 AM |
8437 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 8438 | HASH1 or HASH2. */ | |
| 8387904d | 8439 | |
| 3a71aa26 AM |
8440 | static bfd_boolean |
| 8441 | branch_reloc_hash_match (const bfd *ibfd, | |
| 8442 | const Elf_Internal_Rela *rel, | |
| 8443 | const struct ppc_link_hash_entry *hash1, | |
| 8444 | const struct ppc_link_hash_entry *hash2) | |
| 8445 | { | |
| 8446 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 8447 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 8448 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8449 | ||
| e054468f | 8450 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 8451 | { |
| 3a71aa26 AM |
8452 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 8453 | struct elf_link_hash_entry *h; | |
| 8387904d | 8454 | |
| 3a71aa26 | 8455 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 8456 | h = elf_follow_link (h); |
| 3a71aa26 AM |
8457 | if (h == &hash1->elf || h == &hash2->elf) |
| 8458 | return TRUE; | |
| a48ebf4d | 8459 | } |
| 3a71aa26 | 8460 | return FALSE; |
| 951fd09b | 8461 | } |
| 411e1bfb | 8462 | |
| 951fd09b AM |
8463 | /* Run through all the TLS relocs looking for optimization |
| 8464 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 8465 | a preliminary section layout so that we know the TLS segment | |
| 8466 | offsets. We can't optimize earlier because some optimizations need | |
| 8467 | to know the tp offset, and we need to optimize before allocating | |
| 8468 | dynamic relocations. */ | |
| 8469 | ||
| 8470 | bfd_boolean | |
| 33c0ec9d | 8471 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
| 951fd09b AM |
8472 | { |
| 8473 | bfd *ibfd; | |
| 8474 | asection *sec; | |
| 8475 | struct ppc_link_hash_table *htab; | |
| 663a1470 | 8476 | unsigned char *toc_ref; |
| 102890f0 | 8477 | int pass; |
| 951fd09b | 8478 | |
| 3cbc1e5e | 8479 | if (!bfd_link_executable (info)) |
| 411e1bfb AM |
8480 | return TRUE; |
| 8481 | ||
| 951fd09b | 8482 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8483 | if (htab == NULL) |
| 8484 | return FALSE; | |
| 8485 | ||
| 663a1470 AM |
8486 | /* Make two passes over the relocs. On the first pass, mark toc |
| 8487 | entries involved with tls relocs, and check that tls relocs | |
| 8488 | involved in setting up a tls_get_addr call are indeed followed by | |
| 8489 | such a call. If they are not, we can't do any tls optimization. | |
| 8490 | On the second pass twiddle tls_mask flags to notify | |
| 8491 | relocate_section that optimization can be done, and adjust got | |
| 8492 | and plt refcounts. */ | |
| 8493 | toc_ref = NULL; | |
| 8494 | for (pass = 0; pass < 2; ++pass) | |
| c72f2fb2 | 8495 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 663a1470 AM |
8496 | { |
| 8497 | Elf_Internal_Sym *locsyms = NULL; | |
| 8498 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 8499 | ||
| 102890f0 AM |
8500 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8501 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 8502 | { | |
| 8503 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 663a1470 | 8504 | bfd_boolean found_tls_get_addr_arg = 0; |
| 411e1bfb | 8505 | |
| 102890f0 AM |
8506 | /* Read the relocations. */ |
| 8507 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 8508 | info->keep_memory); | |
| 8509 | if (relstart == NULL) | |
| 2915c55b JK |
8510 | { |
| 8511 | free (toc_ref); | |
| 8512 | return FALSE; | |
| 8513 | } | |
| 411e1bfb | 8514 | |
| 102890f0 AM |
8515 | relend = relstart + sec->reloc_count; |
| 8516 | for (rel = relstart; rel < relend; rel++) | |
| 8517 | { | |
| 8518 | enum elf_ppc64_reloc_type r_type; | |
| 8519 | unsigned long r_symndx; | |
| 8520 | struct elf_link_hash_entry *h; | |
| 8521 | Elf_Internal_Sym *sym; | |
| 8522 | asection *sym_sec; | |
| f961d9dd AM |
8523 | unsigned char *tls_mask; |
| 8524 | unsigned char tls_set, tls_clear, tls_type = 0; | |
| 102890f0 AM |
8525 | bfd_vma value; |
| 8526 | bfd_boolean ok_tprel, is_local; | |
| 8527 | long toc_ref_index = 0; | |
| 8528 | int expecting_tls_get_addr = 0; | |
| 663a1470 | 8529 | bfd_boolean ret = FALSE; |
| 411e1bfb | 8530 | |
| 102890f0 AM |
8531 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8532 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 8533 | r_symndx, ibfd)) | |
| 8534 | { | |
| 8535 | err_free_rel: | |
| 8536 | if (elf_section_data (sec)->relocs != relstart) | |
| 8537 | free (relstart); | |
| 8538 | if (toc_ref != NULL) | |
| 8539 | free (toc_ref); | |
| 8540 | if (locsyms != NULL | |
| 0ffa91dd | 8541 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
8542 | != (unsigned char *) locsyms)) |
| 8543 | free (locsyms); | |
| 663a1470 | 8544 | return ret; |
| 102890f0 | 8545 | } |
| 411e1bfb | 8546 | |
| 102890f0 AM |
8547 | if (h != NULL) |
| 8548 | { | |
| 766bc656 AM |
8549 | if (h->root.type == bfd_link_hash_defined |
| 8550 | || h->root.type == bfd_link_hash_defweak) | |
| 8551 | value = h->root.u.def.value; | |
| 8552 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 8553 | value = 0; | |
| 8554 | else | |
| 663a1470 AM |
8555 | { |
| 8556 | found_tls_get_addr_arg = 0; | |
| 8557 | continue; | |
| 8558 | } | |
| 102890f0 AM |
8559 | } |
| 8560 | else | |
| 8561 | /* Symbols referenced by TLS relocs must be of type | |
| 8562 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 8563 | value = sym->st_value; | |
| 8564 | ||
| 8565 | ok_tprel = FALSE; | |
| 8566 | is_local = FALSE; | |
| 8567 | if (h == NULL | |
| 8568 | || !h->def_dynamic) | |
| 8569 | { | |
| 8570 | is_local = TRUE; | |
| 766bc656 AM |
8571 | if (h != NULL |
| 8572 | && h->root.type == bfd_link_hash_undefweak) | |
| 8573 | ok_tprel = TRUE; | |
| c27b8c2a AM |
8574 | else if (sym_sec != NULL |
| 8575 | && sym_sec->output_section != NULL) | |
| 766bc656 AM |
8576 | { |
| 8577 | value += sym_sec->output_offset; | |
| 8578 | value += sym_sec->output_section->vma; | |
| 8579 | value -= htab->elf.tls_sec->vma; | |
| 8580 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 8581 | < (bfd_vma) 1 << 32); | |
| 8582 | } | |
| 102890f0 | 8583 | } |
| 951fd09b | 8584 | |
| 102890f0 | 8585 | r_type = ELF64_R_TYPE (rel->r_info); |
| 663a1470 AM |
8586 | /* If this section has old-style __tls_get_addr calls |
| 8587 | without marker relocs, then check that each | |
| 8588 | __tls_get_addr call reloc is preceded by a reloc | |
| 8589 | that conceivably belongs to the __tls_get_addr arg | |
| 8590 | setup insn. If we don't find matching arg setup | |
| 8591 | relocs, don't do any tls optimization. */ | |
| 8592 | if (pass == 0 | |
| 8593 | && sec->has_tls_get_addr_call | |
| 8594 | && h != NULL | |
| 8595 | && (h == &htab->tls_get_addr->elf | |
| 8596 | || h == &htab->tls_get_addr_fd->elf) | |
| 8597 | && !found_tls_get_addr_arg | |
| 8598 | && is_branch_reloc (r_type)) | |
| 8599 | { | |
| 25f53a85 | 8600 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
| 663a1470 AM |
8601 | "TLS optimization disabled\n"), |
| 8602 | ibfd, sec, rel->r_offset); | |
| 8603 | ret = TRUE; | |
| 8604 | goto err_free_rel; | |
| 8605 | } | |
| 8606 | ||
| 8607 | found_tls_get_addr_arg = 0; | |
| 102890f0 AM |
8608 | switch (r_type) |
| 8609 | { | |
| 8610 | case R_PPC64_GOT_TLSLD16: | |
| 8611 | case R_PPC64_GOT_TLSLD16_LO: | |
| 8612 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8613 | found_tls_get_addr_arg = 1; |
| 1a0670f3 | 8614 | /* Fall through. */ |
| 102890f0 AM |
8615 | |
| 8616 | case R_PPC64_GOT_TLSLD16_HI: | |
| 8617 | case R_PPC64_GOT_TLSLD16_HA: | |
| 8618 | /* These relocs should never be against a symbol | |
| 8619 | defined in a shared lib. Leave them alone if | |
| 8620 | that turns out to be the case. */ | |
| 8621 | if (!is_local) | |
| 8622 | continue; | |
| 411e1bfb | 8623 | |
| 102890f0 | 8624 | /* LD -> LE */ |
| 411e1bfb | 8625 | tls_set = 0; |
| 102890f0 AM |
8626 | tls_clear = TLS_LD; |
| 8627 | tls_type = TLS_TLS | TLS_LD; | |
| 8628 | break; | |
| 411e1bfb | 8629 | |
| 102890f0 AM |
8630 | case R_PPC64_GOT_TLSGD16: |
| 8631 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8632 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8633 | found_tls_get_addr_arg = 1; |
| 1a0670f3 | 8634 | /* Fall through. */ |
| 102890f0 AM |
8635 | |
| 8636 | case R_PPC64_GOT_TLSGD16_HI: | |
| 8637 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8638 | if (ok_tprel) | |
| 8639 | /* GD -> LE */ | |
| 411e1bfb | 8640 | tls_set = 0; |
| 102890f0 AM |
8641 | else |
| 8642 | /* GD -> IE */ | |
| 8643 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 8644 | tls_clear = TLS_GD; | |
| 8645 | tls_type = TLS_TLS | TLS_GD; | |
| 8646 | break; | |
| 8647 | ||
| 8648 | case R_PPC64_GOT_TPREL16_DS: | |
| 8649 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8650 | case R_PPC64_GOT_TPREL16_HI: | |
| 8651 | case R_PPC64_GOT_TPREL16_HA: | |
| 8652 | if (ok_tprel) | |
| 8653 | { | |
| 8654 | /* IE -> LE */ | |
| 8655 | tls_set = 0; | |
| 8656 | tls_clear = TLS_TPREL; | |
| 8657 | tls_type = TLS_TLS | TLS_TPREL; | |
| 8658 | break; | |
| 8659 | } | |
| 411e1bfb AM |
8660 | continue; |
| 8661 | ||
| 727fc41e AM |
8662 | case R_PPC64_TLSGD: |
| 8663 | case R_PPC64_TLSLD: | |
| 663a1470 | 8664 | found_tls_get_addr_arg = 1; |
| 1a0670f3 | 8665 | /* Fall through. */ |
| 663a1470 AM |
8666 | |
| 8667 | case R_PPC64_TLS: | |
| 8668 | case R_PPC64_TOC16: | |
| 8669 | case R_PPC64_TOC16_LO: | |
| 102890f0 AM |
8670 | if (sym_sec == NULL || sym_sec != toc) |
| 8671 | continue; | |
| 8672 | ||
| 8673 | /* Mark this toc entry as referenced by a TLS | |
| 8674 | code sequence. We can do that now in the | |
| 8675 | case of R_PPC64_TLS, and after checking for | |
| 8676 | tls_get_addr for the TOC16 relocs. */ | |
| 8677 | if (toc_ref == NULL) | |
| 663a1470 AM |
8678 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
| 8679 | if (toc_ref == NULL) | |
| 8680 | goto err_free_rel; | |
| 8681 | ||
| 102890f0 AM |
8682 | if (h != NULL) |
| 8683 | value = h->root.u.def.value; | |
| 8684 | else | |
| 8685 | value = sym->st_value; | |
| 8686 | value += rel->r_addend; | |
| 73242275 AM |
8687 | if (value % 8 != 0) |
| 8688 | continue; | |
| 8689 | BFD_ASSERT (value < toc->size | |
| 8690 | && toc->output_offset % 8 == 0); | |
| 663a1470 | 8691 | toc_ref_index = (value + toc->output_offset) / 8; |
| 727fc41e AM |
8692 | if (r_type == R_PPC64_TLS |
| 8693 | || r_type == R_PPC64_TLSGD | |
| 8694 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
8695 | { |
| 8696 | toc_ref[toc_ref_index] = 1; | |
| 8697 | continue; | |
| 8698 | } | |
| 8699 | ||
| 8700 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 8701 | continue; | |
| 8702 | ||
| 8703 | tls_set = 0; | |
| 8704 | tls_clear = 0; | |
| 8705 | expecting_tls_get_addr = 2; | |
| 8706 | break; | |
| 8707 | ||
| 8708 | case R_PPC64_TPREL64: | |
| 8709 | if (pass == 0 | |
| 8710 | || sec != toc | |
| 8711 | || toc_ref == NULL | |
| 663a1470 | 8712 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8713 | continue; |
| 8714 | if (ok_tprel) | |
| 8715 | { | |
| 8716 | /* IE -> LE */ | |
| 8717 | tls_set = TLS_EXPLICIT; | |
| 8718 | tls_clear = TLS_TPREL; | |
| 8719 | break; | |
| 8720 | } | |
| 8721 | continue; | |
| 8722 | ||
| 8723 | case R_PPC64_DTPMOD64: | |
| 8724 | if (pass == 0 | |
| 8725 | || sec != toc | |
| 8726 | || toc_ref == NULL | |
| 663a1470 | 8727 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8728 | continue; |
| 8729 | if (rel + 1 < relend | |
| 8730 | && (rel[1].r_info | |
| 8731 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 8732 | && rel[1].r_offset == rel->r_offset + 8) | |
| 8733 | { | |
| 8734 | if (ok_tprel) | |
| 8735 | /* GD -> LE */ | |
| 8736 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 8737 | else | |
| 8738 | /* GD -> IE */ | |
| 8739 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 8740 | tls_clear = TLS_GD; | |
| 8741 | } | |
| 8742 | else | |
| 8743 | { | |
| 8744 | if (!is_local) | |
| 8745 | continue; | |
| 8746 | ||
| 8747 | /* LD -> LE */ | |
| 8748 | tls_set = TLS_EXPLICIT; | |
| 8749 | tls_clear = TLS_LD; | |
| 8750 | } | |
| 8751 | break; | |
| 8752 | ||
| 8753 | default: | |
| 8754 | continue; | |
| 8755 | } | |
| 8756 | ||
| 8757 | if (pass == 0) | |
| 8758 | { | |
| 727fc41e AM |
8759 | if (!expecting_tls_get_addr |
| 8760 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
8761 | continue; |
| 8762 | ||
| 3a71aa26 AM |
8763 | if (rel + 1 < relend |
| 8764 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 8765 | htab->tls_get_addr, | |
| 8766 | htab->tls_get_addr_fd)) | |
| 102890f0 | 8767 | { |
| 3a71aa26 | 8768 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 8769 | { |
| 3a71aa26 | 8770 | /* Check for toc tls entries. */ |
| f961d9dd | 8771 | unsigned char *toc_tls; |
| 3a71aa26 AM |
8772 | int retval; |
| 8773 | ||
| 8774 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 8775 | &locsyms, | |
| 8776 | rel, ibfd); | |
| 8777 | if (retval == 0) | |
| 8778 | goto err_free_rel; | |
| 663a1470 AM |
8779 | if (toc_tls != NULL) |
| 8780 | { | |
| 8781 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
| 8782 | found_tls_get_addr_arg = 1; | |
| 8783 | if (retval > 1) | |
| 8784 | toc_ref[toc_ref_index] = 1; | |
| 8785 | } | |
| 102890f0 | 8786 | } |
| 3a71aa26 | 8787 | continue; |
| 102890f0 AM |
8788 | } |
| 8789 | ||
| 8790 | if (expecting_tls_get_addr != 1) | |
| 8791 | continue; | |
| 8792 | ||
| 8793 | /* Uh oh, we didn't find the expected call. We | |
| 8794 | could just mark this symbol to exclude it | |
| 8795 | from tls optimization but it's safer to skip | |
| 663a1470 | 8796 | the entire optimization. */ |
| 695344c0 | 8797 | /* xgettext:c-format */ |
| 25f53a85 | 8798 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
| 663a1470 AM |
8799 | "TLS optimization disabled\n"), |
| 8800 | ibfd, sec, rel->r_offset); | |
| 8801 | ret = TRUE; | |
| 8802 | goto err_free_rel; | |
| 102890f0 AM |
8803 | } |
| 8804 | ||
| 85f7a9cb | 8805 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
8806 | { |
| 8807 | struct plt_entry *ent; | |
| 8808 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 8809 | ent != NULL; | |
| 8810 | ent = ent->next) | |
| 8811 | if (ent->addend == 0) | |
| 411e1bfb | 8812 | { |
| 102890f0 | 8813 | if (ent->plt.refcount > 0) |
| 30038c59 | 8814 | { |
| 102890f0 AM |
8815 | ent->plt.refcount -= 1; |
| 8816 | expecting_tls_get_addr = 0; | |
| 30038c59 | 8817 | } |
| 102890f0 | 8818 | break; |
| 411e1bfb | 8819 | } |
| 102890f0 | 8820 | } |
| 411e1bfb | 8821 | |
| 85f7a9cb | 8822 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
8823 | { |
| 8824 | struct plt_entry *ent; | |
| 8825 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 8826 | ent != NULL; | |
| 8827 | ent = ent->next) | |
| 8828 | if (ent->addend == 0) | |
| 411e1bfb | 8829 | { |
| 102890f0 AM |
8830 | if (ent->plt.refcount > 0) |
| 8831 | ent->plt.refcount -= 1; | |
| 8832 | break; | |
| 411e1bfb | 8833 | } |
| 102890f0 | 8834 | } |
| 411e1bfb | 8835 | |
| 102890f0 | 8836 | if (tls_clear == 0) |
| 30038c59 AM |
8837 | continue; |
| 8838 | ||
| 102890f0 AM |
8839 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 8840 | { | |
| 8841 | struct got_entry *ent; | |
| 411e1bfb | 8842 | |
| 102890f0 AM |
8843 | /* Adjust got entry for this reloc. */ |
| 8844 | if (h != NULL) | |
| 8845 | ent = h->got.glist; | |
| 8846 | else | |
| 8847 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 8848 | |
| 102890f0 AM |
8849 | for (; ent != NULL; ent = ent->next) |
| 8850 | if (ent->addend == rel->r_addend | |
| 8851 | && ent->owner == ibfd | |
| 8852 | && ent->tls_type == tls_type) | |
| 8853 | break; | |
| 8854 | if (ent == NULL) | |
| 8855 | abort (); | |
| 411e1bfb | 8856 | |
| 102890f0 AM |
8857 | if (tls_set == 0) |
| 8858 | { | |
| 8859 | /* We managed to get rid of a got entry. */ | |
| 8860 | if (ent->got.refcount > 0) | |
| 8861 | ent->got.refcount -= 1; | |
| 8862 | } | |
| 8863 | } | |
| 8864 | else | |
| 8865 | { | |
| 8866 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 8867 | we'll lose one or two dyn relocs. */ | |
| 8868 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 19e08130 | 8869 | NULL, h, sym)) |
| 102890f0 | 8870 | return FALSE; |
| 411e1bfb | 8871 | |
| 102890f0 AM |
8872 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 8873 | { | |
| 8874 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 19e08130 | 8875 | NULL, h, sym)) |
| 102890f0 AM |
8876 | return FALSE; |
| 8877 | } | |
| 8878 | } | |
| 411e1bfb | 8879 | |
| 102890f0 AM |
8880 | *tls_mask |= tls_set; |
| 8881 | *tls_mask &= ~tls_clear; | |
| 8882 | } | |
| 8c1d1bb8 | 8883 | |
| 102890f0 AM |
8884 | if (elf_section_data (sec)->relocs != relstart) |
| 8885 | free (relstart); | |
| 8886 | } | |
| 411e1bfb | 8887 | |
| 663a1470 AM |
8888 | if (locsyms != NULL |
| 8889 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 8890 | { | |
| 8891 | if (!info->keep_memory) | |
| 8892 | free (locsyms); | |
| 8893 | else | |
| 8894 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 8895 | } | |
| 8896 | } | |
| 411e1bfb | 8897 | |
| 663a1470 AM |
8898 | if (toc_ref != NULL) |
| 8899 | free (toc_ref); | |
| b34976b6 | 8900 | return TRUE; |
| 1e2f5b6e | 8901 | } |
| b34976b6 | 8902 | |
| c5614fa4 AM |
8903 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 8904 | the values of any global symbols in a toc section that has been | |
| 8905 | edited. Globals in toc sections should be a rarity, so this function | |
| 8906 | sets a flag if any are found in toc sections other than the one just | |
| 8907 | edited, so that futher hash table traversals can be avoided. */ | |
| 8908 | ||
| 8909 | struct adjust_toc_info | |
| 8910 | { | |
| 8911 | asection *toc; | |
| 8912 | unsigned long *skip; | |
| 8913 | bfd_boolean global_toc_syms; | |
| 8914 | }; | |
| 8915 | ||
| ba761f19 AM |
8916 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
| 8917 | ||
| c5614fa4 AM |
8918 | static bfd_boolean |
| 8919 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 8920 | { | |
| 8921 | struct ppc_link_hash_entry *eh; | |
| 8922 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 854b41e7 | 8923 | unsigned long i; |
| c5614fa4 | 8924 | |
| c5614fa4 AM |
8925 | if (h->root.type != bfd_link_hash_defined |
| 8926 | && h->root.type != bfd_link_hash_defweak) | |
| 8927 | return TRUE; | |
| 8928 | ||
| 8929 | eh = (struct ppc_link_hash_entry *) h; | |
| 8930 | if (eh->adjust_done) | |
| 8931 | return TRUE; | |
| 8932 | ||
| 8933 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 8934 | { | |
| 854b41e7 AM |
8935 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
| 8936 | i = toc_inf->toc->rawsize >> 3; | |
| c5614fa4 | 8937 | else |
| 854b41e7 AM |
8938 | i = eh->elf.root.u.def.value >> 3; |
| 8939 | ||
| ba761f19 | 8940 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| c5614fa4 | 8941 | { |
| 4eca0228 | 8942 | _bfd_error_handler |
| 854b41e7 AM |
8943 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
| 8944 | do | |
| 8945 | ++i; | |
| ba761f19 | 8946 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
| 854b41e7 | 8947 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
| c5614fa4 | 8948 | } |
| 854b41e7 AM |
8949 | |
| 8950 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
| c5614fa4 AM |
8951 | eh->adjust_done = 1; |
| 8952 | } | |
| 8953 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 8954 | toc_inf->global_toc_syms = TRUE; | |
| 8955 | ||
| 8956 | return TRUE; | |
| 8957 | } | |
| 8958 | ||
| 39eeab25 AM |
8959 | /* Return TRUE iff INSN with a relocation of R_TYPE is one we expect |
| 8960 | on a _LO variety toc/got reloc. */ | |
| 560c8763 AM |
8961 | |
| 8962 | static bfd_boolean | |
| 39eeab25 | 8963 | ok_lo_toc_insn (unsigned int insn, enum elf_ppc64_reloc_type r_type) |
| 560c8763 | 8964 | { |
| 39eeab25 AM |
8965 | return ((insn & (0x3f << 26)) == 12u << 26 /* addic */ |
| 8966 | || (insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
| 560c8763 AM |
8967 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ |
| 8968 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
| 8969 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
| 8970 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
| 8971 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
| 8972 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
| 8973 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
| 8974 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
| 8975 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
| 8976 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
| 8977 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
| 8978 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
| 8979 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
| 39eeab25 AM |
8980 | || (insn & (0x3f << 26)) == 56u << 26 /* lq,lfq */ |
| 8981 | || ((insn & (0x3f << 26)) == 57u << 26 /* lxsd,lxssp,lfdp */ | |
| 8982 | /* Exclude lfqu by testing reloc. If relocs are ever | |
| 8983 | defined for the reduced D field in psq_lu then those | |
| 8984 | will need testing too. */ | |
| 8985 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
| 8986 | || ((insn & (0x3f << 26)) == 58u << 26 /* ld,lwa */ | |
| 8987 | && (insn & 1) == 0) | |
| 8988 | || (insn & (0x3f << 26)) == 60u << 26 /* stfq */ | |
| 8989 | || ((insn & (0x3f << 26)) == 61u << 26 /* lxv,stx{v,sd,ssp},stfdp */ | |
| 8990 | /* Exclude stfqu. psq_stu as above for psq_lu. */ | |
| 8991 | && r_type != R_PPC64_TOC16_LO && r_type != R_PPC64_GOT16_LO) | |
| 8992 | || ((insn & (0x3f << 26)) == 62u << 26 /* std,stq */ | |
| 8993 | && (insn & 1) == 0)); | |
| 560c8763 AM |
8994 | } |
| 8995 | ||
| c5614fa4 AM |
8996 | /* Examine all relocs referencing .toc sections in order to remove |
| 8997 | unused .toc entries. */ | |
| 8998 | ||
| 8999 | bfd_boolean | |
| 33c0ec9d | 9000 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
| c5614fa4 AM |
9001 | { |
| 9002 | bfd *ibfd; | |
| 9003 | struct adjust_toc_info toc_inf; | |
| 67f0cbdb | 9004 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| c5614fa4 | 9005 | |
| 67f0cbdb | 9006 | htab->do_toc_opt = 1; |
| c5614fa4 | 9007 | toc_inf.global_toc_syms = TRUE; |
| c72f2fb2 | 9008 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| c5614fa4 AM |
9009 | { |
| 9010 | asection *toc, *sec; | |
| 9011 | Elf_Internal_Shdr *symtab_hdr; | |
| 9012 | Elf_Internal_Sym *local_syms; | |
| 425b145b | 9013 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
| c5614fa4 AM |
9014 | unsigned long *skip, *drop; |
| 9015 | unsigned char *used; | |
| 9016 | unsigned char *keep, last, some_unused; | |
| 9017 | ||
| 854b41e7 AM |
9018 | if (!is_ppc64_elf (ibfd)) |
| 9019 | continue; | |
| 9020 | ||
| c5614fa4 AM |
9021 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 9022 | if (toc == NULL | |
| 92b7a70f | 9023 | || toc->size == 0 |
| dbaa2011 AM |
9024 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
| 9025 | || discarded_section (toc)) | |
| c5614fa4 AM |
9026 | continue; |
| 9027 | ||
| 425b145b | 9028 | toc_relocs = NULL; |
| c5614fa4 | 9029 | local_syms = NULL; |
| 0ffa91dd | 9030 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
9031 | |
| 9032 | /* Look at sections dropped from the final link. */ | |
| 9033 | skip = NULL; | |
| 9034 | relstart = NULL; | |
| 9035 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 9036 | { | |
| 9037 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9038 | || !discarded_section (sec) |
| c5614fa4 AM |
9039 | || get_opd_info (sec) |
| 9040 | || (sec->flags & SEC_ALLOC) == 0 | |
| 9041 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 9042 | continue; | |
| 9043 | ||
| 9044 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 9045 | if (relstart == NULL) | |
| 9046 | goto error_ret; | |
| 9047 | ||
| 9048 | /* Run through the relocs to see which toc entries might be | |
| 9049 | unused. */ | |
| 9050 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9051 | { | |
| 9052 | enum elf_ppc64_reloc_type r_type; | |
| 9053 | unsigned long r_symndx; | |
| 9054 | asection *sym_sec; | |
| 9055 | struct elf_link_hash_entry *h; | |
| 9056 | Elf_Internal_Sym *sym; | |
| 9057 | bfd_vma val; | |
| 9058 | ||
| 9059 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9060 | switch (r_type) | |
| 9061 | { | |
| 9062 | default: | |
| 9063 | continue; | |
| 9064 | ||
| 9065 | case R_PPC64_TOC16: | |
| 9066 | case R_PPC64_TOC16_LO: | |
| 9067 | case R_PPC64_TOC16_HI: | |
| 9068 | case R_PPC64_TOC16_HA: | |
| 9069 | case R_PPC64_TOC16_DS: | |
| 9070 | case R_PPC64_TOC16_LO_DS: | |
| 9071 | break; | |
| 9072 | } | |
| 9073 | ||
| 9074 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9075 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9076 | r_symndx, ibfd)) | |
| 9077 | goto error_ret; | |
| 9078 | ||
| 9079 | if (sym_sec != toc) | |
| 9080 | continue; | |
| 9081 | ||
| 9082 | if (h != NULL) | |
| 9083 | val = h->root.u.def.value; | |
| 9084 | else | |
| 9085 | val = sym->st_value; | |
| 9086 | val += rel->r_addend; | |
| 9087 | ||
| 9088 | if (val >= toc->size) | |
| 9089 | continue; | |
| 9090 | ||
| 9091 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 9092 | If not, don't mark as unused. */ | |
| 9093 | if (val & 7) | |
| 9094 | continue; | |
| 9095 | ||
| 9096 | if (skip == NULL) | |
| 9097 | { | |
| 854b41e7 | 9098 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
| c5614fa4 AM |
9099 | if (skip == NULL) |
| 9100 | goto error_ret; | |
| 9101 | } | |
| 9102 | ||
| ba761f19 | 9103 | skip[val >> 3] = ref_from_discarded; |
| c5614fa4 AM |
9104 | } |
| 9105 | ||
| 9106 | if (elf_section_data (sec)->relocs != relstart) | |
| 9107 | free (relstart); | |
| 9108 | } | |
| 9109 | ||
| ba761f19 AM |
9110 | /* For largetoc loads of address constants, we can convert |
| 9111 | . addis rx,2,addr@got@ha | |
| 9112 | . ld ry,addr@got@l(rx) | |
| 9113 | to | |
| 9114 | . addis rx,2,addr@toc@ha | |
| 9115 | . addi ry,rx,addr@toc@l | |
| 9116 | when addr is within 2G of the toc pointer. This then means | |
| 9117 | that the word storing "addr" in the toc is no longer needed. */ | |
| 68ffbac6 | 9118 | |
| ba761f19 AM |
9119 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
| 9120 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
| 9121 | && toc->reloc_count != 0) | |
| 9122 | { | |
| 9123 | /* Read toc relocs. */ | |
| 425b145b AM |
9124 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
| 9125 | info->keep_memory); | |
| 9126 | if (toc_relocs == NULL) | |
| ba761f19 AM |
9127 | goto error_ret; |
| 9128 | ||
| 425b145b | 9129 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
| ba761f19 AM |
9130 | { |
| 9131 | enum elf_ppc64_reloc_type r_type; | |
| 9132 | unsigned long r_symndx; | |
| 9133 | asection *sym_sec; | |
| 9134 | struct elf_link_hash_entry *h; | |
| 9135 | Elf_Internal_Sym *sym; | |
| 9136 | bfd_vma val, addr; | |
| 9137 | ||
| 9138 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9139 | if (r_type != R_PPC64_ADDR64) | |
| 9140 | continue; | |
| 9141 | ||
| 9142 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9143 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9144 | r_symndx, ibfd)) | |
| 9145 | goto error_ret; | |
| 9146 | ||
| 425b145b | 9147 | if (sym_sec == NULL |
| c27b8c2a | 9148 | || sym_sec->output_section == NULL |
| dbaa2011 | 9149 | || discarded_section (sym_sec)) |
| 425b145b AM |
9150 | continue; |
| 9151 | ||
| afe397ea | 9152 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
| ba761f19 AM |
9153 | continue; |
| 9154 | ||
| 9155 | if (h != NULL) | |
| bddc25c9 AM |
9156 | { |
| 9157 | if (h->type == STT_GNU_IFUNC) | |
| 9158 | continue; | |
| 9159 | val = h->root.u.def.value; | |
| 9160 | } | |
| ba761f19 | 9161 | else |
| bddc25c9 AM |
9162 | { |
| 9163 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 9164 | continue; | |
| 9165 | val = sym->st_value; | |
| 9166 | } | |
| ba761f19 AM |
9167 | val += rel->r_addend; |
| 9168 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
| 9169 | ||
| 9170 | /* We don't yet know the exact toc pointer value, but we | |
| 9171 | know it will be somewhere in the toc section. Don't | |
| 9172 | optimize if the difference from any possible toc | |
| 9173 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
| 9174 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
| 9175 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 9176 | continue; | |
| 9177 | ||
| 9178 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
| 9179 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 9180 | continue; | |
| 9181 | ||
| 9182 | if (skip == NULL) | |
| 9183 | { | |
| 9184 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
| 9185 | if (skip == NULL) | |
| 9186 | goto error_ret; | |
| 9187 | } | |
| 9188 | ||
| 9189 | skip[rel->r_offset >> 3] | |
| 425b145b | 9190 | |= can_optimize | ((rel - toc_relocs) << 2); |
| ba761f19 | 9191 | } |
| ba761f19 AM |
9192 | } |
| 9193 | ||
| c5614fa4 AM |
9194 | if (skip == NULL) |
| 9195 | continue; | |
| 9196 | ||
| 9197 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 9198 | if (used == NULL) | |
| 9199 | { | |
| 9200 | error_ret: | |
| 9201 | if (local_syms != NULL | |
| 9202 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9203 | free (local_syms); | |
| 9204 | if (sec != NULL | |
| 9205 | && relstart != NULL | |
| 9206 | && elf_section_data (sec)->relocs != relstart) | |
| 9207 | free (relstart); | |
| 425b145b AM |
9208 | if (toc_relocs != NULL |
| 9209 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 9210 | free (toc_relocs); | |
| c5614fa4 AM |
9211 | if (skip != NULL) |
| 9212 | free (skip); | |
| 9213 | return FALSE; | |
| 9214 | } | |
| 9215 | ||
| 30038c59 AM |
9216 | /* Now check all kept sections that might reference the toc. |
| 9217 | Check the toc itself last. */ | |
| 9218 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 9219 | : ibfd->sections); | |
| c5614fa4 | 9220 | sec != NULL; |
| c5614fa4 | 9221 | sec = (sec == toc ? NULL |
| c5614fa4 | 9222 | : sec->next == NULL ? toc |
| 30038c59 | 9223 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
9224 | : sec->next)) |
| 9225 | { | |
| 9226 | int repeat; | |
| 9227 | ||
| 9228 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9229 | || discarded_section (sec) |
| c5614fa4 AM |
9230 | || get_opd_info (sec) |
| 9231 | || (sec->flags & SEC_ALLOC) == 0 | |
| 9232 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 9233 | continue; | |
| 9234 | ||
| 854b41e7 AM |
9235 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 9236 | info->keep_memory); | |
| c5614fa4 | 9237 | if (relstart == NULL) |
| 2915c55b JK |
9238 | { |
| 9239 | free (used); | |
| 9240 | goto error_ret; | |
| 9241 | } | |
| c5614fa4 AM |
9242 | |
| 9243 | /* Mark toc entries referenced as used. */ | |
| c5614fa4 | 9244 | do |
| d4f1ee75 AM |
9245 | { |
| 9246 | repeat = 0; | |
| 9247 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9248 | { | |
| 9249 | enum elf_ppc64_reloc_type r_type; | |
| 9250 | unsigned long r_symndx; | |
| 9251 | asection *sym_sec; | |
| 9252 | struct elf_link_hash_entry *h; | |
| 9253 | Elf_Internal_Sym *sym; | |
| 9254 | bfd_vma val; | |
| 9255 | enum {no_check, check_lo, check_ha} insn_check; | |
| 98528052 | 9256 | |
| d4f1ee75 AM |
9257 | r_type = ELF64_R_TYPE (rel->r_info); |
| 9258 | switch (r_type) | |
| 9259 | { | |
| 9260 | default: | |
| 9261 | insn_check = no_check; | |
| 9262 | break; | |
| 98528052 | 9263 | |
| d4f1ee75 AM |
9264 | case R_PPC64_GOT_TLSLD16_HA: |
| 9265 | case R_PPC64_GOT_TLSGD16_HA: | |
| 9266 | case R_PPC64_GOT_TPREL16_HA: | |
| 9267 | case R_PPC64_GOT_DTPREL16_HA: | |
| 9268 | case R_PPC64_GOT16_HA: | |
| 9269 | case R_PPC64_TOC16_HA: | |
| 9270 | insn_check = check_ha; | |
| 9271 | break; | |
| 98528052 | 9272 | |
| d4f1ee75 AM |
9273 | case R_PPC64_GOT_TLSLD16_LO: |
| 9274 | case R_PPC64_GOT_TLSGD16_LO: | |
| 9275 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 9276 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 9277 | case R_PPC64_GOT16_LO: | |
| 9278 | case R_PPC64_GOT16_LO_DS: | |
| 9279 | case R_PPC64_TOC16_LO: | |
| 9280 | case R_PPC64_TOC16_LO_DS: | |
| 9281 | insn_check = check_lo; | |
| 9282 | break; | |
| 9283 | } | |
| 560c8763 | 9284 | |
| d4f1ee75 AM |
9285 | if (insn_check != no_check) |
| 9286 | { | |
| 9287 | bfd_vma off = rel->r_offset & ~3; | |
| 9288 | unsigned char buf[4]; | |
| 9289 | unsigned int insn; | |
| c5614fa4 | 9290 | |
| d4f1ee75 AM |
9291 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
| 9292 | { | |
| 9293 | free (used); | |
| 9294 | goto error_ret; | |
| 9295 | } | |
| 9296 | insn = bfd_get_32 (ibfd, buf); | |
| 9297 | if (insn_check == check_lo | |
| 39eeab25 | 9298 | ? !ok_lo_toc_insn (insn, r_type) |
| d4f1ee75 AM |
9299 | : ((insn & ((0x3f << 26) | 0x1f << 16)) |
| 9300 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
| 9301 | { | |
| 9302 | char str[12]; | |
| 9303 | ||
| 9304 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
| 9305 | sprintf (str, "%#08x", insn); | |
| 9306 | info->callbacks->einfo | |
| 695344c0 | 9307 | /* xgettext:c-format */ |
| 174d0a74 | 9308 | (_("%H: toc optimization is not supported for" |
| d4f1ee75 AM |
9309 | " %s instruction.\n"), |
| 9310 | ibfd, sec, rel->r_offset & ~3, str); | |
| 9311 | } | |
| 9312 | } | |
| c5614fa4 | 9313 | |
| d4f1ee75 AM |
9314 | switch (r_type) |
| 9315 | { | |
| 9316 | case R_PPC64_TOC16: | |
| 9317 | case R_PPC64_TOC16_LO: | |
| 9318 | case R_PPC64_TOC16_HI: | |
| 9319 | case R_PPC64_TOC16_HA: | |
| 9320 | case R_PPC64_TOC16_DS: | |
| 9321 | case R_PPC64_TOC16_LO_DS: | |
| 9322 | /* In case we're taking addresses of toc entries. */ | |
| 9323 | case R_PPC64_ADDR64: | |
| 9324 | break; | |
| c5614fa4 | 9325 | |
| d4f1ee75 AM |
9326 | default: |
| 9327 | continue; | |
| 9328 | } | |
| c5614fa4 | 9329 | |
| d4f1ee75 AM |
9330 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 9331 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9332 | r_symndx, ibfd)) | |
| 9333 | { | |
| 9334 | free (used); | |
| 9335 | goto error_ret; | |
| 9336 | } | |
| c5614fa4 | 9337 | |
| d4f1ee75 AM |
9338 | if (sym_sec != toc) |
| 9339 | continue; | |
| c5614fa4 | 9340 | |
| d4f1ee75 AM |
9341 | if (h != NULL) |
| 9342 | val = h->root.u.def.value; | |
| 9343 | else | |
| 9344 | val = sym->st_value; | |
| 9345 | val += rel->r_addend; | |
| ba761f19 | 9346 | |
| d4f1ee75 AM |
9347 | if (val >= toc->size) |
| 9348 | continue; | |
| ba761f19 | 9349 | |
| d4f1ee75 AM |
9350 | if ((skip[val >> 3] & can_optimize) != 0) |
| 9351 | { | |
| 9352 | bfd_vma off; | |
| 9353 | unsigned char opc; | |
| 9354 | ||
| 9355 | switch (r_type) | |
| 9356 | { | |
| 9357 | case R_PPC64_TOC16_HA: | |
| ba761f19 | 9358 | break; |
| ba761f19 | 9359 | |
| d4f1ee75 AM |
9360 | case R_PPC64_TOC16_LO_DS: |
| 9361 | off = rel->r_offset; | |
| 9362 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
| 9363 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
| 9364 | off, 1)) | |
| 9365 | { | |
| 9366 | free (used); | |
| 9367 | goto error_ret; | |
| 9368 | } | |
| 9369 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
| 9370 | break; | |
| 1a0670f3 | 9371 | /* Fall through. */ |
| ba761f19 | 9372 | |
| d4f1ee75 AM |
9373 | default: |
| 9374 | /* Wrong sort of reloc, or not a ld. We may | |
| 9375 | as well clear ref_from_discarded too. */ | |
| 9376 | skip[val >> 3] = 0; | |
| 9377 | } | |
| 9378 | } | |
| 9379 | ||
| 9380 | if (sec != toc) | |
| 9381 | used[val >> 3] = 1; | |
| 9382 | /* For the toc section, we only mark as used if this | |
| 9383 | entry itself isn't unused. */ | |
| 9384 | else if ((used[rel->r_offset >> 3] | |
| 9385 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
| 9386 | && !used[val >> 3]) | |
| 9387 | { | |
| 9388 | /* Do all the relocs again, to catch reference | |
| 9389 | chains. */ | |
| 9390 | repeat = 1; | |
| 9391 | used[val >> 3] = 1; | |
| 9392 | } | |
| 9393 | } | |
| 9394 | } | |
| c5614fa4 | 9395 | while (repeat); |
| 854b41e7 AM |
9396 | |
| 9397 | if (elf_section_data (sec)->relocs != relstart) | |
| 9398 | free (relstart); | |
| c5614fa4 AM |
9399 | } |
| 9400 | ||
| 9401 | /* Merge the used and skip arrays. Assume that TOC | |
| 9402 | doublewords not appearing as either used or unused belong | |
| 9403 | to to an entry more than one doubleword in size. */ | |
| 9404 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 9405 | drop < skip + (toc->size + 7) / 8; | |
| 9406 | ++drop, ++keep) | |
| 9407 | { | |
| 9408 | if (*keep) | |
| 9409 | { | |
| ba761f19 AM |
9410 | *drop &= ~ref_from_discarded; |
| 9411 | if ((*drop & can_optimize) != 0) | |
| 9412 | some_unused = 1; | |
| c5614fa4 AM |
9413 | last = 0; |
| 9414 | } | |
| b140b010 | 9415 | else if ((*drop & ref_from_discarded) != 0) |
| c5614fa4 AM |
9416 | { |
| 9417 | some_unused = 1; | |
| ba761f19 | 9418 | last = ref_from_discarded; |
| c5614fa4 AM |
9419 | } |
| 9420 | else | |
| 9421 | *drop = last; | |
| 9422 | } | |
| 9423 | ||
| 9424 | free (used); | |
| 9425 | ||
| 9426 | if (some_unused) | |
| 9427 | { | |
| 9428 | bfd_byte *contents, *src; | |
| 9429 | unsigned long off; | |
| d62b3684 | 9430 | Elf_Internal_Sym *sym; |
| ba761f19 | 9431 | bfd_boolean local_toc_syms = FALSE; |
| c5614fa4 AM |
9432 | |
| 9433 | /* Shuffle the toc contents, and at the same time convert the | |
| 9434 | skip array from booleans into offsets. */ | |
| 9435 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 9436 | goto error_ret; | |
| 9437 | ||
| 9438 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 9439 | ||
| 9440 | for (src = contents, off = 0, drop = skip; | |
| 9441 | src < contents + toc->size; | |
| 9442 | src += 8, ++drop) | |
| 9443 | { | |
| ba761f19 AM |
9444 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
| 9445 | off += 8; | |
| c5614fa4 AM |
9446 | else if (off != 0) |
| 9447 | { | |
| 9448 | *drop = off; | |
| 9449 | memcpy (src - off, src, 8); | |
| 9450 | } | |
| 9451 | } | |
| 854b41e7 | 9452 | *drop = off; |
| c5614fa4 AM |
9453 | toc->rawsize = toc->size; |
| 9454 | toc->size = src - contents - off; | |
| 9455 | ||
| ba761f19 AM |
9456 | /* Adjust addends for relocs against the toc section sym, |
| 9457 | and optimize any accesses we can. */ | |
| c5614fa4 AM |
9458 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 9459 | { | |
| 9460 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9461 | || discarded_section (sec)) |
| c5614fa4 AM |
9462 | continue; |
| 9463 | ||
| 9464 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 854b41e7 | 9465 | info->keep_memory); |
| c5614fa4 AM |
9466 | if (relstart == NULL) |
| 9467 | goto error_ret; | |
| 9468 | ||
| 9469 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9470 | { | |
| 9471 | enum elf_ppc64_reloc_type r_type; | |
| 9472 | unsigned long r_symndx; | |
| 9473 | asection *sym_sec; | |
| 9474 | struct elf_link_hash_entry *h; | |
| 854b41e7 | 9475 | bfd_vma val; |
| c5614fa4 AM |
9476 | |
| 9477 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9478 | switch (r_type) | |
| 9479 | { | |
| 9480 | default: | |
| 9481 | continue; | |
| 9482 | ||
| 9483 | case R_PPC64_TOC16: | |
| 9484 | case R_PPC64_TOC16_LO: | |
| 9485 | case R_PPC64_TOC16_HI: | |
| 9486 | case R_PPC64_TOC16_HA: | |
| 9487 | case R_PPC64_TOC16_DS: | |
| 9488 | case R_PPC64_TOC16_LO_DS: | |
| 9489 | case R_PPC64_ADDR64: | |
| 9490 | break; | |
| 9491 | } | |
| 9492 | ||
| 9493 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9494 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9495 | r_symndx, ibfd)) | |
| 9496 | goto error_ret; | |
| 9497 | ||
| ba761f19 | 9498 | if (sym_sec != toc) |
| c5614fa4 AM |
9499 | continue; |
| 9500 | ||
| ba761f19 AM |
9501 | if (h != NULL) |
| 9502 | val = h->root.u.def.value; | |
| 9503 | else | |
| 9504 | { | |
| 9505 | val = sym->st_value; | |
| 9506 | if (val != 0) | |
| 9507 | local_toc_syms = TRUE; | |
| 9508 | } | |
| 9509 | ||
| 9510 | val += rel->r_addend; | |
| 854b41e7 AM |
9511 | |
| 9512 | if (val > toc->rawsize) | |
| 9513 | val = toc->rawsize; | |
| ba761f19 AM |
9514 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
| 9515 | continue; | |
| 9516 | else if ((skip[val >> 3] & can_optimize) != 0) | |
| 9517 | { | |
| 9518 | Elf_Internal_Rela *tocrel | |
| 425b145b | 9519 | = toc_relocs + (skip[val >> 3] >> 2); |
| ba761f19 AM |
9520 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
| 9521 | ||
| 9522 | switch (r_type) | |
| 9523 | { | |
| 9524 | case R_PPC64_TOC16_HA: | |
| 9525 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
| 9526 | break; | |
| 9527 | ||
| 9528 | case R_PPC64_TOC16_LO_DS: | |
| 9529 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
| 9530 | break; | |
| 9531 | ||
| 9532 | default: | |
| 28942f62 AM |
9533 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 9534 | ppc_howto_init (); | |
| b140b010 | 9535 | info->callbacks->einfo |
| 695344c0 | 9536 | /* xgettext:c-format */ |
| 174d0a74 | 9537 | (_("%H: %s references " |
| b140b010 AM |
9538 | "optimized away TOC entry\n"), |
| 9539 | ibfd, sec, rel->r_offset, | |
| 9540 | ppc64_elf_howto_table[r_type]->name); | |
| 9541 | bfd_set_error (bfd_error_bad_value); | |
| 9542 | goto error_ret; | |
| ba761f19 AM |
9543 | } |
| 9544 | rel->r_addend = tocrel->r_addend; | |
| 9545 | elf_section_data (sec)->relocs = relstart; | |
| 9546 | continue; | |
| 9547 | } | |
| 9548 | ||
| 9549 | if (h != NULL || sym->st_value != 0) | |
| 9550 | continue; | |
| 854b41e7 AM |
9551 | |
| 9552 | rel->r_addend -= skip[val >> 3]; | |
| 9553 | elf_section_data (sec)->relocs = relstart; | |
| c5614fa4 | 9554 | } |
| 854b41e7 AM |
9555 | |
| 9556 | if (elf_section_data (sec)->relocs != relstart) | |
| 9557 | free (relstart); | |
| c5614fa4 AM |
9558 | } |
| 9559 | ||
| 9560 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 9561 | but handle them anyway. */ | |
| df22d223 AM |
9562 | if (local_syms != NULL) |
| 9563 | for (sym = local_syms; | |
| 9564 | sym < local_syms + symtab_hdr->sh_info; | |
| 9565 | ++sym) | |
| 9566 | if (sym->st_value != 0 | |
| 9567 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
| 9568 | { | |
| 9569 | unsigned long i; | |
| 854b41e7 | 9570 | |
| df22d223 AM |
9571 | if (sym->st_value > toc->rawsize) |
| 9572 | i = toc->rawsize >> 3; | |
| 9573 | else | |
| 9574 | i = sym->st_value >> 3; | |
| 854b41e7 | 9575 | |
| df22d223 AM |
9576 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| 9577 | { | |
| 9578 | if (local_toc_syms) | |
| 4eca0228 | 9579 | _bfd_error_handler |
| df22d223 AM |
9580 | (_("%s defined on removed toc entry"), |
| 9581 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
| 9582 | do | |
| 9583 | ++i; | |
| 9584 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
| 9585 | sym->st_value = (bfd_vma) i << 3; | |
| 9586 | } | |
| d62b3684 | 9587 | |
| df22d223 AM |
9588 | sym->st_value -= skip[i]; |
| 9589 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9590 | } | |
| c5614fa4 | 9591 | |
| 854b41e7 | 9592 | /* Adjust any global syms defined in this toc input section. */ |
| c5614fa4 AM |
9593 | if (toc_inf.global_toc_syms) |
| 9594 | { | |
| 9595 | toc_inf.toc = toc; | |
| 9596 | toc_inf.skip = skip; | |
| 9597 | toc_inf.global_toc_syms = FALSE; | |
| 9598 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 9599 | &toc_inf); | |
| 9600 | } | |
| 854b41e7 AM |
9601 | |
| 9602 | if (toc->reloc_count != 0) | |
| 9603 | { | |
| d4730f92 | 9604 | Elf_Internal_Shdr *rel_hdr; |
| 854b41e7 AM |
9605 | Elf_Internal_Rela *wrel; |
| 9606 | bfd_size_type sz; | |
| 9607 | ||
| 854b41e7 | 9608 | /* Remove unused toc relocs, and adjust those we keep. */ |
| 28be611c AM |
9609 | if (toc_relocs == NULL) |
| 9610 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 9611 | info->keep_memory); | |
| 9612 | if (toc_relocs == NULL) | |
| 9613 | goto error_ret; | |
| 9614 | ||
| 425b145b AM |
9615 | wrel = toc_relocs; |
| 9616 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
| ba761f19 AM |
9617 | if ((skip[rel->r_offset >> 3] |
| 9618 | & (ref_from_discarded | can_optimize)) == 0) | |
| 854b41e7 AM |
9619 | { |
| 9620 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 9621 | wrel->r_info = rel->r_info; | |
| 9622 | wrel->r_addend = rel->r_addend; | |
| 9623 | ++wrel; | |
| 9624 | } | |
| 9625 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
| 9626 | &local_syms, NULL, NULL)) | |
| 9627 | goto error_ret; | |
| 9628 | ||
| 425b145b AM |
9629 | elf_section_data (toc)->relocs = toc_relocs; |
| 9630 | toc->reloc_count = wrel - toc_relocs; | |
| d4730f92 BS |
9631 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
| 9632 | sz = rel_hdr->sh_entsize; | |
| 9633 | rel_hdr->sh_size = toc->reloc_count * sz; | |
| 854b41e7 | 9634 | } |
| c5614fa4 | 9635 | } |
| 28be611c AM |
9636 | else if (toc_relocs != NULL |
| 9637 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 425b145b | 9638 | free (toc_relocs); |
| c5614fa4 AM |
9639 | |
| 9640 | if (local_syms != NULL | |
| 9641 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9642 | { | |
| 9643 | if (!info->keep_memory) | |
| 9644 | free (local_syms); | |
| 9645 | else | |
| 9646 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9647 | } | |
| 9648 | free (skip); | |
| 9649 | } | |
| 9650 | ||
| 9651 | return TRUE; | |
| 9652 | } | |
| 9653 | ||
| 1bbe0902 AM |
9654 | /* Return true iff input section I references the TOC using |
| 9655 | instructions limited to +/-32k offsets. */ | |
| 9656 | ||
| 9657 | bfd_boolean | |
| 9658 | ppc64_elf_has_small_toc_reloc (asection *i) | |
| 9659 | { | |
| 9660 | return (is_ppc64_elf (i->owner) | |
| 9661 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
| 9662 | } | |
| 9663 | ||
| 927be08e AM |
9664 | /* Allocate space for one GOT entry. */ |
| 9665 | ||
| 9666 | static void | |
| 9667 | allocate_got (struct elf_link_hash_entry *h, | |
| 9668 | struct bfd_link_info *info, | |
| 9669 | struct got_entry *gent) | |
| 9670 | { | |
| 9671 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
9672 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; |
| 9673 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
| 9674 | ? 16 : 8); | |
| 9675 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
| 9676 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
| 9677 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
| 9678 | ||
| 9679 | gent->got.offset = got->size; | |
| 9680 | got->size += entsize; | |
| 9681 | ||
| 19e08130 | 9682 | if (h->type == STT_GNU_IFUNC) |
| 927be08e | 9683 | { |
| 33e44f2e | 9684 | htab->elf.irelplt->size += rentsize; |
| 19e08130 | 9685 | htab->got_reli_size += rentsize; |
| 927be08e | 9686 | } |
| 0e1862bb | 9687 | else if ((bfd_link_pic (info) |
| f0158f44 AM |
9688 | || (htab->elf.dynamic_sections_created |
| 9689 | && h->dynindx != -1 | |
| 9690 | && !SYMBOL_REFERENCES_LOCAL (info, h))) | |
| 21d68fcd | 9691 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
| 927be08e | 9692 | { |
| 19e08130 | 9693 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
| 927be08e | 9694 | relgot->size += rentsize; |
| 927be08e AM |
9695 | } |
| 9696 | } | |
| 9697 | ||
| 7865406b AM |
9698 | /* This function merges got entries in the same toc group. */ |
| 9699 | ||
| 9700 | static void | |
| 9701 | merge_got_entries (struct got_entry **pent) | |
| 9702 | { | |
| 9703 | struct got_entry *ent, *ent2; | |
| 9704 | ||
| 9705 | for (ent = *pent; ent != NULL; ent = ent->next) | |
| 9706 | if (!ent->is_indirect) | |
| 9707 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
| 9708 | if (!ent2->is_indirect | |
| 9709 | && ent2->addend == ent->addend | |
| 9710 | && ent2->tls_type == ent->tls_type | |
| 9711 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
| 9712 | { | |
| 9713 | ent2->is_indirect = TRUE; | |
| 9714 | ent2->got.ent = ent; | |
| 9715 | } | |
| 9716 | } | |
| 9717 | ||
| f0158f44 AM |
9718 | /* If H is undefined weak, make it dynamic if that makes sense. */ |
| 9719 | ||
| 9720 | static bfd_boolean | |
| 9721 | ensure_undefweak_dynamic (struct bfd_link_info *info, | |
| 9722 | struct elf_link_hash_entry *h) | |
| 9723 | { | |
| 9724 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
| 9725 | ||
| 9726 | if (htab->dynamic_sections_created | |
| 954b63d4 | 9727 | && info->dynamic_undefined_weak != 0 |
| f0158f44 AM |
9728 | && h->root.type == bfd_link_hash_undefweak |
| 9729 | && h->dynindx == -1 | |
| 9730 | && !h->forced_local | |
| 9731 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) | |
| 9732 | return bfd_elf_link_record_dynamic_symbol (info, h); | |
| 9733 | return TRUE; | |
| 9734 | } | |
| 9735 | ||
| 65f38f15 AM |
9736 | /* Allocate space in .plt, .got and associated reloc sections for |
| 9737 | dynamic relocs. */ | |
| 5bd4f169 | 9738 | |
| b34976b6 | 9739 | static bfd_boolean |
| 4ce794b7 | 9740 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 9741 | { |
| 65f38f15 AM |
9742 | struct bfd_link_info *info; |
| 9743 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 9744 | asection *s; |
| 65f38f15 | 9745 | struct ppc_link_hash_entry *eh; |
| 0b8bcf0d | 9746 | struct got_entry **pgent, *gent; |
| 5bd4f169 | 9747 | |
| e92d460e | 9748 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 9749 | return TRUE; |
| 5bd4f169 | 9750 | |
| 65f38f15 AM |
9751 | info = (struct bfd_link_info *) inf; |
| 9752 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9753 | if (htab == NULL) |
| 9754 | return FALSE; | |
| 5bd4f169 | 9755 | |
| 951fd09b AM |
9756 | eh = (struct ppc_link_hash_entry *) h; |
| 9757 | /* Run through the TLS GD got entries first if we're changing them | |
| 9758 | to TPREL. */ | |
| e7b938ca | 9759 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
9760 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 9761 | if (gent->got.refcount > 0 | |
| 9762 | && (gent->tls_type & TLS_GD) != 0) | |
| 9763 | { | |
| 9764 | /* This was a GD entry that has been converted to TPREL. If | |
| 9765 | there happens to be a TPREL entry we can use that one. */ | |
| 9766 | struct got_entry *ent; | |
| 9767 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 9768 | if (ent->got.refcount > 0 | |
| 9769 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
9770 | && ent->addend == gent->addend |
| 9771 | && ent->owner == gent->owner) | |
| 951fd09b AM |
9772 | { |
| 9773 | gent->got.refcount = 0; | |
| 9774 | break; | |
| 9775 | } | |
| 9776 | ||
| 9777 | /* If not, then we'll be using our own TPREL entry. */ | |
| 9778 | if (gent->got.refcount != 0) | |
| 9779 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 9780 | } | |
| 9781 | ||
| 7865406b AM |
9782 | /* Remove any list entry that won't generate a word in the GOT before |
| 9783 | we call merge_got_entries. Otherwise we risk merging to empty | |
| 9784 | entries. */ | |
| 0b8bcf0d AM |
9785 | pgent = &h->got.glist; |
| 9786 | while ((gent = *pgent) != NULL) | |
| 411e1bfb | 9787 | if (gent->got.refcount > 0) |
| 7865406b AM |
9788 | { |
| 9789 | if ((gent->tls_type & TLS_LD) != 0 | |
| 9790 | && !h->def_dynamic) | |
| 9791 | { | |
| 9792 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
| 9793 | *pgent = gent->next; | |
| 9794 | } | |
| 9795 | else | |
| 9796 | pgent = &gent->next; | |
| 9797 | } | |
| 9798 | else | |
| 9799 | *pgent = gent->next; | |
| 9800 | ||
| 9801 | if (!htab->do_multi_toc) | |
| 9802 | merge_got_entries (&h->got.glist); | |
| 9803 | ||
| 9804 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
| 9805 | if (!gent->is_indirect) | |
| 411e1bfb AM |
9806 | { |
| 9807 | /* Make sure this symbol is output as a dynamic symbol. | |
| f0158f44 AM |
9808 | Undefined weak syms won't yet be marked as dynamic. */ |
| 9809 | if (!ensure_undefweak_dynamic (info, h)) | |
| 9810 | return FALSE; | |
| 65f38f15 | 9811 | |
| 0c8d6e5c | 9812 | if (!is_ppc64_elf (gent->owner)) |
| 927be08e | 9813 | abort (); |
| 0ffa91dd | 9814 | |
| 927be08e | 9815 | allocate_got (h, info, gent); |
| 411e1bfb | 9816 | } |
| 65f38f15 | 9817 | |
| 954b63d4 AM |
9818 | /* If no dynamic sections we can't have dynamic relocs, except for |
| 9819 | IFUNCs which are handled even in static executables. */ | |
| 8a2058b5 AM |
9820 | if (!htab->elf.dynamic_sections_created |
| 9821 | && h->type != STT_GNU_IFUNC) | |
| 9822 | eh->dyn_relocs = NULL; | |
| 9823 | ||
| 954b63d4 AM |
9824 | /* Also discard relocs on undefined weak syms with non-default |
| 9825 | visibility, or when dynamic_undefined_weak says so. */ | |
| 21d68fcd | 9826 | else if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
| 954b63d4 AM |
9827 | eh->dyn_relocs = NULL; |
| 9828 | ||
| 8a2058b5 | 9829 | if (eh->dyn_relocs != NULL) |
| 65f38f15 | 9830 | { |
| 8a2058b5 AM |
9831 | struct elf_dyn_relocs *p, **pp; |
| 9832 | ||
| 57e7d118 AM |
9833 | /* In the shared -Bsymbolic case, discard space allocated for |
| 9834 | dynamic pc-relative relocs against symbols which turn out to | |
| 9835 | be defined in regular objects. For the normal shared case, | |
| 9836 | discard space for relocs that have become local due to symbol | |
| 9837 | visibility changes. */ | |
| 9838 | ||
| 9839 | if (bfd_link_pic (info)) | |
| 65f38f15 | 9840 | { |
| 57e7d118 AM |
9841 | /* Relocs that use pc_count are those that appear on a call |
| 9842 | insn, or certain REL relocs (see must_be_dyn_reloc) that | |
| 9843 | can be generated via assembly. We want calls to | |
| 9844 | protected symbols to resolve directly to the function | |
| 9845 | rather than going via the plt. If people want function | |
| 9846 | pointer comparisons to work as expected then they should | |
| 9847 | avoid writing weird assembly. */ | |
| 9848 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
| 9849 | { | |
| 57e7d118 AM |
9850 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) |
| 9851 | { | |
| 9852 | p->count -= p->pc_count; | |
| 9853 | p->pc_count = 0; | |
| 9854 | if (p->count == 0) | |
| 9855 | *pp = p->next; | |
| 9856 | else | |
| 9857 | pp = &p->next; | |
| 9858 | } | |
| 9859 | } | |
| 65f38f15 | 9860 | |
| 954b63d4 | 9861 | if (eh->dyn_relocs != NULL) |
| 5bd4f169 | 9862 | { |
| 57e7d118 AM |
9863 | /* Make sure this symbol is output as a dynamic symbol. |
| 9864 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 954b63d4 | 9865 | if (!ensure_undefweak_dynamic (info, h)) |
| f0158f44 | 9866 | return FALSE; |
| 5bd4f169 | 9867 | } |
| 65f38f15 | 9868 | } |
| 57e7d118 | 9869 | else if (h->type == STT_GNU_IFUNC) |
| dfbb6ac9 | 9870 | { |
| 8a2058b5 AM |
9871 | /* A plt entry is always created when making direct calls to |
| 9872 | an ifunc, even when building a static executable, but | |
| 9873 | that doesn't cover all cases. We may have only an ifunc | |
| 9874 | initialised function pointer for a given ifunc symbol. | |
| 9875 | ||
| 9876 | For ELFv2, dynamic relocations are not required when | |
| 9877 | generating a global entry PLT stub. */ | |
| 9878 | if (abiversion (info->output_bfd) >= 2) | |
| 9879 | { | |
| 9880 | if (global_entry_stub (h)) | |
| 9881 | eh->dyn_relocs = NULL; | |
| 9882 | } | |
| 9883 | ||
| 9884 | /* For ELFv1 we have function descriptors. Descriptors need | |
| 9885 | to be treated like PLT entries and thus have dynamic | |
| 9886 | relocations. One exception is when the function | |
| 9887 | descriptor is copied into .dynbss (which should only | |
| 9888 | happen with ancient versions of gcc). */ | |
| 9889 | else if (h->needs_copy) | |
| dfbb6ac9 | 9890 | eh->dyn_relocs = NULL; |
| 57e7d118 AM |
9891 | } |
| 9892 | else if (ELIMINATE_COPY_RELOCS) | |
| 9893 | { | |
| 8a2058b5 | 9894 | /* For the non-pic case, discard space for relocs against |
| 57e7d118 AM |
9895 | symbols which turn out to need copy relocs or are not |
| 9896 | dynamic. */ | |
| f0158f44 AM |
9897 | if (!h->non_got_ref |
| 9898 | && !h->def_regular) | |
| 9899 | { | |
| 9900 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9901 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9902 | if (!ensure_undefweak_dynamic (info, h)) | |
| 9903 | return FALSE; | |
| dfbb6ac9 | 9904 | |
| f0158f44 AM |
9905 | if (h->dynindx == -1) |
| 9906 | eh->dyn_relocs = NULL; | |
| 9907 | } | |
| 9908 | else | |
| 8a2058b5 | 9909 | eh->dyn_relocs = NULL; |
| 57e7d118 AM |
9910 | } |
| 9911 | ||
| 9912 | /* Finally, allocate space. */ | |
| 9913 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9914 | { | |
| 9915 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 9916 | if (eh->elf.type == STT_GNU_IFUNC) | |
| 9917 | sreloc = htab->elf.irelplt; | |
| 9918 | sreloc->size += p->count * sizeof (Elf64_External_Rela); | |
| dfbb6ac9 | 9919 | } |
| 65f38f15 | 9920 | } |
| 57e7d118 AM |
9921 | |
| 9922 | if ((htab->elf.dynamic_sections_created | |
| f0158f44 | 9923 | && h->dynindx != -1) |
| 57e7d118 | 9924 | || h->type == STT_GNU_IFUNC) |
| 65f38f15 | 9925 | { |
| 57e7d118 AM |
9926 | struct plt_entry *pent; |
| 9927 | bfd_boolean doneone = FALSE; | |
| 9928 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9929 | if (pent->plt.refcount > 0) | |
| 9930 | { | |
| 9931 | if (!htab->elf.dynamic_sections_created | |
| 9932 | || h->dynindx == -1) | |
| 9933 | { | |
| 9934 | s = htab->elf.iplt; | |
| 9935 | pent->plt.offset = s->size; | |
| 9936 | s->size += PLT_ENTRY_SIZE (htab); | |
| 9937 | s = htab->elf.irelplt; | |
| 9938 | } | |
| 9939 | else | |
| 9940 | { | |
| 9941 | /* If this is the first .plt entry, make room for the special | |
| 9942 | first entry. */ | |
| 9943 | s = htab->elf.splt; | |
| 9944 | if (s->size == 0) | |
| 9945 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); | |
| 65f38f15 | 9946 | |
| 57e7d118 | 9947 | pent->plt.offset = s->size; |
| 65f38f15 | 9948 | |
| 57e7d118 AM |
9949 | /* Make room for this entry. */ |
| 9950 | s->size += PLT_ENTRY_SIZE (htab); | |
| 65f38f15 | 9951 | |
| 57e7d118 AM |
9952 | /* Make room for the .glink code. */ |
| 9953 | s = htab->glink; | |
| 9954 | if (s->size == 0) | |
| 9955 | s->size += GLINK_CALL_STUB_SIZE; | |
| 9956 | if (htab->opd_abi) | |
| 9957 | { | |
| 9958 | /* We need bigger stubs past index 32767. */ | |
| 9959 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 9960 | s->size += 4; | |
| 9961 | s->size += 2*4; | |
| 9962 | } | |
| 9963 | else | |
| 9964 | s->size += 4; | |
| 65f38f15 | 9965 | |
| 57e7d118 AM |
9966 | /* We also need to make an entry in the .rela.plt section. */ |
| 9967 | s = htab->elf.srelplt; | |
| 9968 | } | |
| 9969 | s->size += sizeof (Elf64_External_Rela); | |
| 9970 | doneone = TRUE; | |
| 9971 | } | |
| 9972 | else | |
| 9973 | pent->plt.offset = (bfd_vma) -1; | |
| 9974 | if (!doneone) | |
| 9975 | { | |
| 9976 | h->plt.plist = NULL; | |
| 9977 | h->needs_plt = 0; | |
| 9978 | } | |
| 65f38f15 | 9979 | } |
| 57e7d118 | 9980 | else |
| 65f38f15 | 9981 | { |
| 57e7d118 AM |
9982 | h->plt.plist = NULL; |
| 9983 | h->needs_plt = 0; | |
| 65f38f15 AM |
9984 | } |
| 9985 | ||
| b34976b6 | 9986 | return TRUE; |
| 65f38f15 AM |
9987 | } |
| 9988 | ||
| a345bc8d AM |
9989 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
| 9990 | to set up space for global entry stubs. These are put in glink, | |
| 9991 | after the branch table. */ | |
| 65f38f15 | 9992 | |
| b34976b6 | 9993 | static bfd_boolean |
| a345bc8d | 9994 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 | 9995 | { |
| a345bc8d AM |
9996 | struct bfd_link_info *info; |
| 9997 | struct ppc_link_hash_table *htab; | |
| 9998 | struct plt_entry *pent; | |
| 9999 | asection *s; | |
| 65f38f15 | 10000 | |
| a345bc8d AM |
10001 | if (h->root.type == bfd_link_hash_indirect) |
| 10002 | return TRUE; | |
| 65f38f15 | 10003 | |
| a345bc8d AM |
10004 | if (!h->pointer_equality_needed) |
| 10005 | return TRUE; | |
| 65f38f15 | 10006 | |
| a345bc8d AM |
10007 | if (h->def_regular) |
| 10008 | return TRUE; | |
| 65f38f15 | 10009 | |
| a345bc8d AM |
10010 | info = inf; |
| 10011 | htab = ppc_hash_table (info); | |
| 10012 | if (htab == NULL) | |
| 10013 | return FALSE; | |
| 10014 | ||
| 10015 | s = htab->glink; | |
| 10016 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 10017 | if (pent->plt.offset != (bfd_vma) -1 | |
| 10018 | && pent->addend == 0) | |
| 10019 | { | |
| afe397ea AM |
10020 | /* For ELFv2, if this symbol is not defined in a regular file |
| 10021 | and we are not generating a shared library or pie, then we | |
| 10022 | need to define the symbol in the executable on a call stub. | |
| 10023 | This is to avoid text relocations. */ | |
| a345bc8d | 10024 | s->size = (s->size + 15) & -16; |
| 8a2058b5 | 10025 | h->root.type = bfd_link_hash_defined; |
| afe397ea AM |
10026 | h->root.u.def.section = s; |
| 10027 | h->root.u.def.value = s->size; | |
| a345bc8d AM |
10028 | s->size += 16; |
| 10029 | break; | |
| 10030 | } | |
| 10031 | return TRUE; | |
| 10032 | } | |
| 10033 | ||
| 10034 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
| 10035 | read-only sections. */ | |
| 10036 | ||
| 10037 | static bfd_boolean | |
| 10038 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
| 10039 | { | |
| 10040 | if (h->root.type == bfd_link_hash_indirect) | |
| 10041 | return TRUE; | |
| 10042 | ||
| 10043 | if (readonly_dynrelocs (h)) | |
| 10044 | { | |
| 10045 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
| 10046 | ||
| 10047 | /* Not an error, just cut short the traversal. */ | |
| 10048 | return FALSE; | |
| 65f38f15 | 10049 | } |
| b34976b6 | 10050 | return TRUE; |
| 65f38f15 AM |
10051 | } |
| 10052 | ||
| 10053 | /* Set the sizes of the dynamic sections. */ | |
| 10054 | ||
| b34976b6 | 10055 | static bfd_boolean |
| ee67d69a | 10056 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
| 4ce794b7 | 10057 | struct bfd_link_info *info) |
| 65f38f15 AM |
10058 | { |
| 10059 | struct ppc_link_hash_table *htab; | |
| 10060 | bfd *dynobj; | |
| 10061 | asection *s; | |
| b34976b6 | 10062 | bfd_boolean relocs; |
| 65f38f15 | 10063 | bfd *ibfd; |
| 7865406b | 10064 | struct got_entry *first_tlsld; |
| 65f38f15 AM |
10065 | |
| 10066 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
10067 | if (htab == NULL) |
| 10068 | return FALSE; | |
| 10069 | ||
| 65f38f15 AM |
10070 | dynobj = htab->elf.dynobj; |
| 10071 | if (dynobj == NULL) | |
| 10072 | abort (); | |
| 10073 | ||
| 10074 | if (htab->elf.dynamic_sections_created) | |
| 10075 | { | |
| 10076 | /* Set the contents of the .interp section to the interpreter. */ | |
| 9b8b325a | 10077 | if (bfd_link_executable (info) && !info->nointerp) |
| 65f38f15 | 10078 | { |
| 3d4d4302 | 10079 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 65f38f15 AM |
10080 | if (s == NULL) |
| 10081 | abort (); | |
| eea6121a | 10082 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
10083 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 10084 | } | |
| 10085 | } | |
| 10086 | ||
| 10087 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 10088 | relocs. */ | |
| c72f2fb2 | 10089 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 65f38f15 | 10090 | { |
| 411e1bfb AM |
10091 | struct got_entry **lgot_ents; |
| 10092 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
10093 | struct plt_entry **local_plt; |
| 10094 | struct plt_entry **end_local_plt; | |
| f961d9dd | 10095 | unsigned char *lgot_masks; |
| 65f38f15 AM |
10096 | bfd_size_type locsymcount; |
| 10097 | Elf_Internal_Shdr *symtab_hdr; | |
| 65f38f15 | 10098 | |
| 0c8d6e5c | 10099 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
10100 | continue; |
| 10101 | ||
| 10102 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 10103 | { | |
| 19e08130 | 10104 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 10105 | |
| 6edfbbad | 10106 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 10107 | { |
| ec338859 AM |
10108 | if (!bfd_is_abs_section (p->sec) |
| 10109 | && bfd_is_abs_section (p->sec->output_section)) | |
| 10110 | { | |
| 10111 | /* Input section has been discarded, either because | |
| 10112 | it is a copy of a linkonce section or due to | |
| 10113 | linker script /DISCARD/, so we'll be discarding | |
| 10114 | the relocs too. */ | |
| 10115 | } | |
| 248866a8 | 10116 | else if (p->count != 0) |
| ec338859 | 10117 | { |
| 19e08130 AM |
10118 | asection *srel = elf_section_data (p->sec)->sreloc; |
| 10119 | if (p->ifunc) | |
| 33e44f2e | 10120 | srel = htab->elf.irelplt; |
| eea6121a | 10121 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
10122 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 10123 | info->flags |= DF_TEXTREL; | |
| ec338859 | 10124 | } |
| 65f38f15 AM |
10125 | } |
| 10126 | } | |
| 10127 | ||
| 411e1bfb AM |
10128 | lgot_ents = elf_local_got_ents (ibfd); |
| 10129 | if (!lgot_ents) | |
| 65f38f15 AM |
10130 | continue; |
| 10131 | ||
| 0ffa91dd | 10132 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 10133 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 10134 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
10135 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 10136 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 10137 | lgot_masks = (unsigned char *) end_local_plt; |
| e717da7e | 10138 | s = ppc64_elf_tdata (ibfd)->got; |
| e7b938ca | 10139 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 10140 | { |
| 0b8bcf0d | 10141 | struct got_entry **pent, *ent; |
| 411e1bfb | 10142 | |
| 0b8bcf0d AM |
10143 | pent = lgot_ents; |
| 10144 | while ((ent = *pent) != NULL) | |
| 411e1bfb AM |
10145 | if (ent->got.refcount > 0) |
| 10146 | { | |
| e7b938ca | 10147 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 10148 | { |
| 927be08e | 10149 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
| 0b8bcf0d | 10150 | *pent = ent->next; |
| 411e1bfb AM |
10151 | } |
| 10152 | else | |
| 10153 | { | |
| 19e08130 AM |
10154 | unsigned int ent_size = 8; |
| 10155 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 10156 | ||
| eea6121a | 10157 | ent->got.offset = s->size; |
| e7b938ca | 10158 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 927be08e | 10159 | { |
| 19e08130 AM |
10160 | ent_size *= 2; |
| 10161 | rel_size *= 2; | |
| 10162 | } | |
| 10163 | s->size += ent_size; | |
| 10164 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 10165 | { | |
| 33e44f2e | 10166 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
10167 | htab->got_reli_size += rel_size; |
| 10168 | } | |
| 0e1862bb | 10169 | else if (bfd_link_pic (info)) |
| 19e08130 AM |
10170 | { |
| 10171 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 10172 | srel->size += rel_size; | |
| 927be08e | 10173 | } |
| 0b8bcf0d | 10174 | pent = &ent->next; |
| 411e1bfb AM |
10175 | } |
| 10176 | } | |
| 10177 | else | |
| 0b8bcf0d | 10178 | *pent = ent->next; |
| 65f38f15 | 10179 | } |
| e054468f AM |
10180 | |
| 10181 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 10182 | for (; local_plt < end_local_plt; ++local_plt) | |
| 10183 | { | |
| 10184 | struct plt_entry *ent; | |
| 10185 | ||
| 10186 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 10187 | if (ent->plt.refcount > 0) | |
| 10188 | { | |
| 33e44f2e | 10189 | s = htab->elf.iplt; |
| e054468f | 10190 | ent->plt.offset = s->size; |
| b9e5796b | 10191 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f | 10192 | |
| 33e44f2e | 10193 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
10194 | } |
| 10195 | else | |
| 10196 | ent->plt.offset = (bfd_vma) -1; | |
| 10197 | } | |
| 65f38f15 AM |
10198 | } |
| 10199 | ||
| 10200 | /* Allocate global sym .plt and .got entries, and space for global | |
| 10201 | sym dynamic relocs. */ | |
| 4ce794b7 | 10202 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| a345bc8d AM |
10203 | /* Stash the end of glink branch table. */ |
| 10204 | if (htab->glink != NULL) | |
| 10205 | htab->glink->rawsize = htab->glink->size; | |
| 10206 | ||
| 0e1862bb | 10207 | if (!htab->opd_abi && !bfd_link_pic (info)) |
| a345bc8d | 10208 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
| 65f38f15 | 10209 | |
| 7865406b | 10210 | first_tlsld = NULL; |
| c72f2fb2 | 10211 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 102890f0 | 10212 | { |
| 7865406b AM |
10213 | struct got_entry *ent; |
| 10214 | ||
| 0c8d6e5c | 10215 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
10216 | continue; |
| 10217 | ||
| 7865406b AM |
10218 | ent = ppc64_tlsld_got (ibfd); |
| 10219 | if (ent->got.refcount > 0) | |
| 102890f0 | 10220 | { |
| 7865406b | 10221 | if (!htab->do_multi_toc && first_tlsld != NULL) |
| 102890f0 | 10222 | { |
| 7865406b AM |
10223 | ent->is_indirect = TRUE; |
| 10224 | ent->got.ent = first_tlsld; | |
| 10225 | } | |
| 10226 | else | |
| 10227 | { | |
| 10228 | if (first_tlsld == NULL) | |
| 10229 | first_tlsld = ent; | |
| 10230 | s = ppc64_elf_tdata (ibfd)->got; | |
| 10231 | ent->got.offset = s->size; | |
| 10232 | ent->owner = ibfd; | |
| 10233 | s->size += 16; | |
| 0e1862bb | 10234 | if (bfd_link_pic (info)) |
| 7865406b AM |
10235 | { |
| 10236 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 10237 | srel->size += sizeof (Elf64_External_Rela); | |
| 10238 | } | |
| 102890f0 AM |
10239 | } |
| 10240 | } | |
| 10241 | else | |
| 7865406b | 10242 | ent->got.offset = (bfd_vma) -1; |
| 102890f0 AM |
10243 | } |
| 10244 | ||
| 65f38f15 AM |
10245 | /* We now have determined the sizes of the various dynamic sections. |
| 10246 | Allocate memory for them. */ | |
| b34976b6 | 10247 | relocs = FALSE; |
| 65f38f15 AM |
10248 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 10249 | { | |
| 10250 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 10251 | continue; | |
| 10252 | ||
| 4ce794b7 | 10253 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
10254 | /* These haven't been allocated yet; don't strip. */ |
| 10255 | continue; | |
| 33e44f2e AM |
10256 | else if (s == htab->elf.sgot |
| 10257 | || s == htab->elf.splt | |
| 10258 | || s == htab->elf.iplt | |
| c456f082 | 10259 | || s == htab->glink |
| 5474d94f AM |
10260 | || s == htab->elf.sdynbss |
| 10261 | || s == htab->elf.sdynrelro) | |
| 65f38f15 AM |
10262 | { |
| 10263 | /* Strip this section if we don't need it; see the | |
| 10264 | comment below. */ | |
| 5bd4f169 | 10265 | } |
| 58d180e8 AM |
10266 | else if (s == htab->glink_eh_frame) |
| 10267 | { | |
| 10268 | if (!bfd_is_abs_section (s->output_section)) | |
| 10269 | /* Not sized yet. */ | |
| 10270 | continue; | |
| 10271 | } | |
| 70cc837d | 10272 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 5bd4f169 | 10273 | { |
| c456f082 | 10274 | if (s->size != 0) |
| 5bd4f169 | 10275 | { |
| 33e44f2e | 10276 | if (s != htab->elf.srelplt) |
| b34976b6 | 10277 | relocs = TRUE; |
| 5bd4f169 AM |
10278 | |
| 10279 | /* We use the reloc_count field as a counter if we need | |
| 10280 | to copy relocs into the output file. */ | |
| 10281 | s->reloc_count = 0; | |
| 10282 | } | |
| 10283 | } | |
| 65f38f15 | 10284 | else |
| 5bd4f169 AM |
10285 | { |
| 10286 | /* It's not one of our sections, so don't allocate space. */ | |
| 10287 | continue; | |
| 10288 | } | |
| 10289 | ||
| eea6121a | 10290 | if (s->size == 0) |
| 5bd4f169 | 10291 | { |
| c456f082 AM |
10292 | /* If we don't need this section, strip it from the |
| 10293 | output file. This is mostly to handle .rela.bss and | |
| 10294 | .rela.plt. We must create both sections in | |
| 10295 | create_dynamic_sections, because they must be created | |
| 10296 | before the linker maps input sections to output | |
| 10297 | sections. The linker does that before | |
| 10298 | adjust_dynamic_symbol is called, and it is that | |
| 10299 | function which decides whether anything needs to go | |
| 10300 | into these sections. */ | |
| 8423293d | 10301 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
10302 | continue; |
| 10303 | } | |
| 10304 | ||
| c456f082 | 10305 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
10306 | continue; |
| 10307 | ||
| 65f38f15 AM |
10308 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 10309 | here in case unused entries are not reclaimed before the | |
| 10310 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
10311 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 10312 | sections instead of garbage. | |
| 10313 | We also rely on the section contents being zero when writing | |
| 5474d94f | 10314 | the GOT and .dynrelro. */ |
| eea6121a | 10315 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 10316 | if (s->contents == NULL) |
| b34976b6 | 10317 | return FALSE; |
| 5bd4f169 AM |
10318 | } |
| 10319 | ||
| c72f2fb2 | 10320 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| e717da7e | 10321 | { |
| 0c8d6e5c | 10322 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
10323 | continue; |
| 10324 | ||
| e717da7e | 10325 | s = ppc64_elf_tdata (ibfd)->got; |
| 33e44f2e | 10326 | if (s != NULL && s != htab->elf.sgot) |
| e717da7e | 10327 | { |
| eea6121a | 10328 | if (s->size == 0) |
| 8423293d | 10329 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
10330 | else |
| 10331 | { | |
| eea6121a | 10332 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
10333 | if (s->contents == NULL) |
| 10334 | return FALSE; | |
| 10335 | } | |
| 10336 | } | |
| 10337 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 10338 | if (s != NULL) | |
| 10339 | { | |
| eea6121a | 10340 | if (s->size == 0) |
| 8423293d | 10341 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
10342 | else |
| 10343 | { | |
| eea6121a | 10344 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
10345 | if (s->contents == NULL) |
| 10346 | return FALSE; | |
| 10347 | relocs = TRUE; | |
| 10348 | s->reloc_count = 0; | |
| 10349 | } | |
| 10350 | } | |
| 10351 | } | |
| 10352 | ||
| e86ce104 | 10353 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 10354 | { |
| e8910a83 AM |
10355 | bfd_boolean tls_opt; |
| 10356 | ||
| 5bd4f169 AM |
10357 | /* Add some entries to the .dynamic section. We fill in the |
| 10358 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 10359 | must add the entries now so that we get the correct size for | |
| 10360 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 10361 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 10362 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 10363 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 10364 | |
| 0e1862bb | 10365 | if (bfd_link_executable (info)) |
| 5bd4f169 | 10366 | { |
| dc810e39 | 10367 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 10368 | return FALSE; |
| 5bd4f169 AM |
10369 | } |
| 10370 | ||
| 33e44f2e | 10371 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
| 5bd4f169 | 10372 | { |
| dc810e39 AM |
10373 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 10374 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 10375 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
10376 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 10377 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 10378 | return FALSE; |
| 5bd4f169 AM |
10379 | } |
| 10380 | ||
| ee67d69a | 10381 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
| 19397422 AM |
10382 | { |
| 10383 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 10384 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 10385 | return FALSE; |
| 19397422 AM |
10386 | } |
| 10387 | ||
| 7c9cf415 | 10388 | tls_opt = (htab->params->tls_get_addr_opt |
| e8910a83 AM |
10389 | && htab->tls_get_addr_fd != NULL |
| 10390 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
| 10391 | if (tls_opt || !htab->opd_abi) | |
| 10392 | { | |
| 10393 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
| 10394 | return FALSE; | |
| 10395 | } | |
| a7f2871e | 10396 | |
| 5bd4f169 AM |
10397 | if (relocs) |
| 10398 | { | |
| dc810e39 AM |
10399 | if (!add_dynamic_entry (DT_RELA, 0) |
| 10400 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 10401 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 10402 | return FALSE; |
| 5bd4f169 | 10403 | |
| 65f38f15 AM |
10404 | /* If any dynamic relocs apply to a read-only section, |
| 10405 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 10406 | if ((info->flags & DF_TEXTREL) == 0) |
| a345bc8d | 10407 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
| 5bd4f169 | 10408 | |
| 65f38f15 | 10409 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 10410 | { |
| 65f38f15 | 10411 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 10412 | return FALSE; |
| 5bd4f169 | 10413 | } |
| 5bd4f169 | 10414 | } |
| 5bd4f169 | 10415 | } |
| 65f38f15 | 10416 | #undef add_dynamic_entry |
| 5bd4f169 | 10417 | |
| b34976b6 | 10418 | return TRUE; |
| 5bd4f169 AM |
10419 | } |
| 10420 | ||
| a345bc8d AM |
10421 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
| 10422 | ||
| 10423 | static bfd_boolean | |
| 10424 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
| 10425 | { | |
| 10426 | if (h->plt.plist != NULL | |
| 10427 | && !h->def_regular | |
| 10428 | && !h->pointer_equality_needed) | |
| 10429 | return FALSE; | |
| 10430 | ||
| 10431 | return _bfd_elf_hash_symbol (h); | |
| 10432 | } | |
| 10433 | ||
| 721956f4 | 10434 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 10435 | |
| 4ce794b7 AM |
10436 | static inline enum ppc_stub_type |
| 10437 | ppc_type_of_stub (asection *input_sec, | |
| 10438 | const Elf_Internal_Rela *rel, | |
| 10439 | struct ppc_link_hash_entry **hash, | |
| e054468f | 10440 | struct plt_entry **plt_ent, |
| 6911b7dc AM |
10441 | bfd_vma destination, |
| 10442 | unsigned long local_off) | |
| 5bd4f169 | 10443 | { |
| 721956f4 AM |
10444 | struct ppc_link_hash_entry *h = *hash; |
| 10445 | bfd_vma location; | |
| 10446 | bfd_vma branch_offset; | |
| 10447 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 10448 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 10449 | |
| 721956f4 AM |
10450 | if (h != NULL) |
| 10451 | { | |
| e054468f | 10452 | struct plt_entry *ent; |
| 7fe2b9a6 | 10453 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
10454 | if (h->oh != NULL |
| 10455 | && h->oh->is_func_descriptor) | |
| 7b8f6675 AM |
10456 | { |
| 10457 | fdh = ppc_follow_link (h->oh); | |
| 10458 | *hash = fdh; | |
| 10459 | } | |
| 8387904d | 10460 | |
| e054468f AM |
10461 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 10462 | if (ent->addend == rel->r_addend | |
| 10463 | && ent->plt.offset != (bfd_vma) -1) | |
| 10464 | { | |
| e054468f AM |
10465 | *plt_ent = ent; |
| 10466 | return ppc_stub_plt_call; | |
| 10467 | } | |
| 5bd4f169 | 10468 | |
| 7fe2b9a6 AM |
10469 | /* Here, we know we don't have a plt entry. If we don't have a |
| 10470 | either a defined function descriptor or a defined entry symbol | |
| 10471 | in a regular object file, then it is pointless trying to make | |
| 10472 | any other type of stub. */ | |
| 854b41e7 AM |
10473 | if (!is_static_defined (&fdh->elf) |
| 10474 | && !is_static_defined (&h->elf)) | |
| 721956f4 | 10475 | return ppc_stub_none; |
| 5d1634d7 | 10476 | } |
| e054468f AM |
10477 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 10478 | { | |
| 10479 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 10480 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 10481 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 10482 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 10483 | ||
| 10484 | if (local_plt[r_symndx] != NULL) | |
| 10485 | { | |
| 10486 | struct plt_entry *ent; | |
| 10487 | ||
| 10488 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 10489 | if (ent->addend == rel->r_addend | |
| 10490 | && ent->plt.offset != (bfd_vma) -1) | |
| 10491 | { | |
| 10492 | *plt_ent = ent; | |
| 10493 | return ppc_stub_plt_call; | |
| 10494 | } | |
| 10495 | } | |
| 10496 | } | |
| 5d1634d7 | 10497 | |
| 721956f4 AM |
10498 | /* Determine where the call point is. */ |
| 10499 | location = (input_sec->output_offset | |
| 10500 | + input_sec->output_section->vma | |
| 10501 | + rel->r_offset); | |
| 5d1634d7 | 10502 | |
| 721956f4 AM |
10503 | branch_offset = destination - location; |
| 10504 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 10505 | |
| 721956f4 AM |
10506 | /* Determine if a long branch stub is needed. */ |
| 10507 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 10508 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 10509 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 10510 | |
| 6911b7dc | 10511 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
| 721956f4 AM |
10512 | /* We need a stub. Figure out whether a long_branch or plt_branch |
| 10513 | is needed later. */ | |
| 10514 | return ppc_stub_long_branch; | |
| 5d1634d7 | 10515 | |
| 721956f4 | 10516 | return ppc_stub_none; |
| 5d1634d7 AM |
10517 | } |
| 10518 | ||
| 794e51c0 AM |
10519 | /* With power7 weakly ordered memory model, it is possible for ld.so |
| 10520 | to update a plt entry in one thread and have another thread see a | |
| 10521 | stale zero toc entry. To avoid this we need some sort of acquire | |
| 10522 | barrier in the call stub. One solution is to make the load of the | |
| 10523 | toc word seem to appear to depend on the load of the function entry | |
| 10524 | word. Another solution is to test for r2 being zero, and branch to | |
| 10525 | the appropriate glink entry if so. | |
| 10526 | ||
| 10527 | . fake dep barrier compare | |
| 71a39c98 AM |
10528 | . ld 12,xxx(2) ld 12,xxx(2) |
| 10529 | . mtctr 12 mtctr 12 | |
| 10530 | . xor 11,12,12 ld 2,xxx+8(2) | |
| 794e51c0 AM |
10531 | . add 2,2,11 cmpldi 2,0 |
| 10532 | . ld 2,xxx+8(2) bnectr+ | |
| 10533 | . bctr b <glink_entry> | |
| 10534 | ||
| 10535 | The solution involving the compare turns out to be faster, so | |
| 10536 | that's what we use unless the branch won't reach. */ | |
| 10537 | ||
| 10538 | #define ALWAYS_USE_FAKE_DEP 0 | |
| 10539 | #define ALWAYS_EMIT_R2SAVE 0 | |
| 5d1634d7 | 10540 | |
| 5d1634d7 AM |
10541 | #define PPC_LO(v) ((v) & 0xffff) |
| 10542 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 10543 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 10544 | ||
| 794e51c0 AM |
10545 | static inline unsigned int |
| 10546 | plt_stub_size (struct ppc_link_hash_table *htab, | |
| 10547 | struct ppc_stub_hash_entry *stub_entry, | |
| 10548 | bfd_vma off) | |
| 10549 | { | |
| b9e5796b AM |
10550 | unsigned size = 12; |
| 10551 | ||
| 10552 | if (ALWAYS_EMIT_R2SAVE | |
| 10553 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10554 | size += 4; | |
| 10555 | if (PPC_HA (off) != 0) | |
| 794e51c0 | 10556 | size += 4; |
| b9e5796b AM |
10557 | if (htab->opd_abi) |
| 10558 | { | |
| 10559 | size += 4; | |
| e7d1c40c | 10560 | if (htab->params->plt_static_chain) |
| b9e5796b | 10561 | size += 4; |
| bd4d2eaa AM |
10562 | if (htab->params->plt_thread_safe |
| 10563 | && htab->elf.dynamic_sections_created | |
| 10564 | && stub_entry->h != NULL | |
| 10565 | && stub_entry->h->elf.dynindx != -1) | |
| b9e5796b | 10566 | size += 8; |
| e7d1c40c | 10567 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
| b9e5796b AM |
10568 | size += 4; |
| 10569 | } | |
| 794e51c0 AM |
10570 | if (stub_entry->h != NULL |
| 10571 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10572 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 10573 | && htab->params->tls_get_addr_opt) |
| f378ab09 AM |
10574 | { |
| 10575 | size += 7 * 4; | |
| 10576 | if (ALWAYS_EMIT_R2SAVE | |
| 10577 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10578 | size += 6 * 4; | |
| 10579 | } | |
| 794e51c0 AM |
10580 | return size; |
| 10581 | } | |
| 10582 | ||
| 10583 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
| 10584 | then return the padding needed to do so. */ | |
| 10585 | static inline unsigned int | |
| 10586 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
| 10587 | struct ppc_stub_hash_entry *stub_entry, | |
| 10588 | bfd_vma plt_off) | |
| 10589 | { | |
| e7d1c40c | 10590 | int stub_align = 1 << htab->params->plt_stub_align; |
| 794e51c0 | 10591 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
| 6f20ed8a | 10592 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
| 794e51c0 AM |
10593 | |
| 10594 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
| e05fa0ba | 10595 | > ((stub_size - 1) & -stub_align)) |
| 794e51c0 AM |
10596 | return stub_align - (stub_off & (stub_align - 1)); |
| 10597 | return 0; | |
| 10598 | } | |
| 10599 | ||
| 10600 | /* Build a .plt call stub. */ | |
| 10601 | ||
| 10602 | static inline bfd_byte * | |
| 10603 | build_plt_stub (struct ppc_link_hash_table *htab, | |
| 10604 | struct ppc_stub_hash_entry *stub_entry, | |
| 10605 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| 10606 | { | |
| e7d1c40c | 10607 | bfd *obfd = htab->params->stub_bfd; |
| b9e5796b | 10608 | bfd_boolean plt_load_toc = htab->opd_abi; |
| e7d1c40c | 10609 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
| bd4d2eaa AM |
10610 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
| 10611 | && htab->elf.dynamic_sections_created | |
| 10612 | && stub_entry->h != NULL | |
| 10613 | && stub_entry->h->elf.dynindx != -1); | |
| 794e51c0 AM |
10614 | bfd_boolean use_fake_dep = plt_thread_safe; |
| 10615 | bfd_vma cmp_branch_off = 0; | |
| 10616 | ||
| 10617 | if (!ALWAYS_USE_FAKE_DEP | |
| b9e5796b | 10618 | && plt_load_toc |
| 794e51c0 | 10619 | && plt_thread_safe |
| bd4d2eaa AM |
10620 | && !((stub_entry->h == htab->tls_get_addr_fd |
| 10621 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 10622 | && htab->params->tls_get_addr_opt)) |
| 794e51c0 AM |
10623 | { |
| 10624 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
| b9e5796b AM |
10625 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 10626 | / PLT_ENTRY_SIZE (htab)); | |
| 794e51c0 AM |
10627 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
| 10628 | bfd_vma to, from; | |
| 10629 | ||
| 68d62958 AM |
10630 | if (pltindex > 32768) |
| 10631 | glinkoff += (pltindex - 32768) * 4; | |
| 794e51c0 AM |
10632 | to = (glinkoff |
| 10633 | + htab->glink->output_offset | |
| 10634 | + htab->glink->output_section->vma); | |
| 6f20ed8a | 10635 | from = (p - stub_entry->group->stub_sec->contents |
| 794e51c0 AM |
10636 | + 4 * (ALWAYS_EMIT_R2SAVE |
| 10637 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10638 | + 4 * (PPC_HA (offset) != 0) | |
| 10639 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
| 10640 | != PPC_HA (offset)) | |
| 10641 | + 4 * (plt_static_chain != 0) | |
| 10642 | + 20 | |
| 6f20ed8a AM |
10643 | + stub_entry->group->stub_sec->output_offset |
| 10644 | + stub_entry->group->stub_sec->output_section->vma); | |
| 794e51c0 AM |
10645 | cmp_branch_off = to - from; |
| 10646 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
| 10647 | } | |
| 10648 | ||
| ac2df442 AM |
10649 | if (PPC_HA (offset) != 0) |
| 10650 | { | |
| 176a0d42 AM |
10651 | if (r != NULL) |
| 10652 | { | |
| 794e51c0 AM |
10653 | if (ALWAYS_EMIT_R2SAVE |
| 10654 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10655 | r[0].r_offset += 4; | |
| 176a0d42 | 10656 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
| 3b421ab3 | 10657 | r[1].r_offset = r[0].r_offset + 4; |
| 176a0d42 AM |
10658 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 10659 | r[1].r_addend = r[0].r_addend; | |
| b9e5796b | 10660 | if (plt_load_toc) |
| 176a0d42 | 10661 | { |
| b9e5796b | 10662 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10663 | { |
| b9e5796b AM |
10664 | r[2].r_offset = r[1].r_offset + 4; |
| 10665 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 10666 | r[2].r_addend = r[0].r_addend; | |
| 10667 | } | |
| 10668 | else | |
| 10669 | { | |
| 10670 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
| 10671 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10672 | r[2].r_addend = r[0].r_addend + 8; | |
| 10673 | if (plt_static_chain) | |
| 10674 | { | |
| 10675 | r[3].r_offset = r[2].r_offset + 4; | |
| 10676 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10677 | r[3].r_addend = r[0].r_addend + 16; | |
| 10678 | } | |
| c7131b65 | 10679 | } |
| 176a0d42 AM |
10680 | } |
| 10681 | } | |
| 794e51c0 AM |
10682 | if (ALWAYS_EMIT_R2SAVE |
| 10683 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10684 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 397998fc AM |
10685 | if (plt_load_toc) |
| 10686 | { | |
| 10687 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
| 10688 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
| 10689 | } | |
| 10690 | else | |
| 10691 | { | |
| 10692 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
| 10693 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
| 10694 | } | |
| b9e5796b AM |
10695 | if (plt_load_toc |
| 10696 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 | 10697 | { |
| 71a39c98 | 10698 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
| ac2df442 AM |
10699 | offset = 0; |
| 10700 | } | |
| 71a39c98 | 10701 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10702 | if (plt_load_toc) |
| 794e51c0 | 10703 | { |
| b9e5796b AM |
10704 | if (use_fake_dep) |
| 10705 | { | |
| 10706 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
| 10707 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
| 10708 | } | |
| 10709 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
| 10710 | if (plt_static_chain) | |
| 10711 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
| 794e51c0 | 10712 | } |
| ac2df442 AM |
10713 | } |
| 10714 | else | |
| 10715 | { | |
| 176a0d42 AM |
10716 | if (r != NULL) |
| 10717 | { | |
| 794e51c0 AM |
10718 | if (ALWAYS_EMIT_R2SAVE |
| 10719 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10720 | r[0].r_offset += 4; | |
| 176a0d42 | 10721 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| b9e5796b | 10722 | if (plt_load_toc) |
| 176a0d42 | 10723 | { |
| b9e5796b | 10724 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10725 | { |
| b9e5796b AM |
10726 | r[1].r_offset = r[0].r_offset + 4; |
| 10727 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 10728 | r[1].r_addend = r[0].r_addend; | |
| 10729 | } | |
| 10730 | else | |
| 10731 | { | |
| 10732 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
| 10733 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10734 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
| 10735 | if (plt_static_chain) | |
| 10736 | { | |
| 10737 | r[2].r_offset = r[1].r_offset + 4; | |
| 10738 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10739 | r[2].r_addend = r[0].r_addend + 8; | |
| 10740 | } | |
| c7131b65 | 10741 | } |
| 176a0d42 AM |
10742 | } |
| 10743 | } | |
| 794e51c0 AM |
10744 | if (ALWAYS_EMIT_R2SAVE |
| 10745 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10746 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 71a39c98 | 10747 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
| b9e5796b AM |
10748 | if (plt_load_toc |
| 10749 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 AM |
10750 | { |
| 10751 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 10752 | offset = 0; | |
| 10753 | } | |
| 71a39c98 | 10754 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10755 | if (plt_load_toc) |
| 794e51c0 | 10756 | { |
| b9e5796b AM |
10757 | if (use_fake_dep) |
| 10758 | { | |
| 10759 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
| 10760 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
| 10761 | } | |
| 10762 | if (plt_static_chain) | |
| 10763 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 10764 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 794e51c0 | 10765 | } |
| ac2df442 | 10766 | } |
| b9e5796b | 10767 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
| 794e51c0 AM |
10768 | { |
| 10769 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
| 10770 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
| 22aa0c7e | 10771 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
| 794e51c0 AM |
10772 | } |
| 10773 | else | |
| 10774 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 5d1634d7 AM |
10775 | return p; |
| 10776 | } | |
| 10777 | ||
| a7f2871e AM |
10778 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 10779 | ||
| 10780 | #define LD_R11_0R3 0xe9630000 | |
| 10781 | #define LD_R12_0R3 0xe9830000 | |
| 10782 | #define MR_R0_R3 0x7c601b78 | |
| 10783 | #define CMPDI_R11_0 0x2c2b0000 | |
| 10784 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 10785 | #define BEQLR 0x4d820020 | |
| 10786 | #define MR_R3_R0 0x7c030378 | |
| a7f2871e AM |
10787 | #define STD_R11_0R1 0xf9610000 |
| 10788 | #define BCTRL 0x4e800421 | |
| 10789 | #define LD_R11_0R1 0xe9610000 | |
| a7f2871e AM |
10790 | #define MTLR_R11 0x7d6803a6 |
| 10791 | ||
| 10792 | static inline bfd_byte * | |
| 794e51c0 AM |
10793 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
| 10794 | struct ppc_stub_hash_entry *stub_entry, | |
| 10795 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| a7f2871e | 10796 | { |
| e7d1c40c | 10797 | bfd *obfd = htab->params->stub_bfd; |
| 794e51c0 | 10798 | |
| a7f2871e AM |
10799 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
| 10800 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 10801 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 10802 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 10803 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 10804 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 10805 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| f378ab09 AM |
10806 | if (r != NULL) |
| 10807 | r[0].r_offset += 7 * 4; | |
| 10808 | if (!ALWAYS_EMIT_R2SAVE | |
| 10809 | && stub_entry->stub_type != ppc_stub_plt_call_r2save) | |
| 10810 | return build_plt_stub (htab, stub_entry, p, offset, r); | |
| 10811 | ||
| a7f2871e | 10812 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; |
| a078d95a | 10813 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| a7f2871e AM |
10814 | |
| 10815 | if (r != NULL) | |
| f378ab09 | 10816 | r[0].r_offset += 2 * 4; |
| 794e51c0 | 10817 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
| a7f2871e AM |
10818 | bfd_put_32 (obfd, BCTRL, p - 4); |
| 10819 | ||
| a078d95a | 10820 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| bd4d2eaa | 10821 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| a7f2871e AM |
10822 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
| 10823 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 10824 | ||
| 10825 | return p; | |
| 10826 | } | |
| 10827 | ||
| 176a0d42 AM |
10828 | static Elf_Internal_Rela * |
| 10829 | get_relocs (asection *sec, int count) | |
| 10830 | { | |
| 10831 | Elf_Internal_Rela *relocs; | |
| 10832 | struct bfd_elf_section_data *elfsec_data; | |
| 10833 | ||
| 10834 | elfsec_data = elf_section_data (sec); | |
| 10835 | relocs = elfsec_data->relocs; | |
| 10836 | if (relocs == NULL) | |
| 10837 | { | |
| 10838 | bfd_size_type relsize; | |
| 10839 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 10840 | relocs = bfd_alloc (sec->owner, relsize); | |
| 10841 | if (relocs == NULL) | |
| 10842 | return NULL; | |
| 10843 | elfsec_data->relocs = relocs; | |
| d4730f92 BS |
10844 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
| 10845 | sizeof (Elf_Internal_Shdr)); | |
| 10846 | if (elfsec_data->rela.hdr == NULL) | |
| 10847 | return NULL; | |
| 10848 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
| 10849 | * sizeof (Elf64_External_Rela)); | |
| 10850 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
| 176a0d42 AM |
10851 | sec->reloc_count = 0; |
| 10852 | } | |
| 10853 | relocs += sec->reloc_count; | |
| 10854 | sec->reloc_count += count; | |
| 10855 | return relocs; | |
| 10856 | } | |
| 10857 | ||
| aa374f67 | 10858 | static bfd_vma |
| 25f53a85 | 10859 | get_r2off (struct bfd_link_info *info, |
| aa374f67 AM |
10860 | struct ppc_stub_hash_entry *stub_entry) |
| 10861 | { | |
| 25f53a85 | 10862 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 6f20ed8a | 10863 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
| aa374f67 AM |
10864 | |
| 10865 | if (r2off == 0) | |
| 10866 | { | |
| 10867 | /* Support linking -R objects. Get the toc pointer from the | |
| 10868 | opd entry. */ | |
| 10869 | char buf[8]; | |
| b9e5796b AM |
10870 | if (!htab->opd_abi) |
| 10871 | return r2off; | |
| aa374f67 AM |
10872 | asection *opd = stub_entry->h->elf.root.u.def.section; |
| 10873 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
| 10874 | ||
| 10875 | if (strcmp (opd->name, ".opd") != 0 | |
| 10876 | || opd->reloc_count != 0) | |
| 10877 | { | |
| bc30df16 | 10878 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
| 25f53a85 | 10879 | stub_entry->h->elf.root.root.string); |
| aa374f67 | 10880 | bfd_set_error (bfd_error_bad_value); |
| a7c49797 | 10881 | return (bfd_vma) -1; |
| aa374f67 AM |
10882 | } |
| 10883 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
| a7c49797 | 10884 | return (bfd_vma) -1; |
| aa374f67 | 10885 | r2off = bfd_get_64 (opd->owner, buf); |
| 25f53a85 | 10886 | r2off -= elf_gp (info->output_bfd); |
| aa374f67 | 10887 | } |
| 6f20ed8a | 10888 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
| aa374f67 AM |
10889 | return r2off; |
| 10890 | } | |
| 10891 | ||
| b34976b6 | 10892 | static bfd_boolean |
| 4ce794b7 | 10893 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 10894 | { |
| 721956f4 AM |
10895 | struct ppc_stub_hash_entry *stub_entry; |
| 10896 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
10897 | struct bfd_link_info *info; |
| 10898 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
10899 | bfd_byte *loc; |
| 10900 | bfd_byte *p; | |
| ee75fd95 | 10901 | bfd_vma dest, off; |
| 721956f4 | 10902 | int size; |
| 176a0d42 | 10903 | Elf_Internal_Rela *r; |
| e054468f | 10904 | asection *plt; |
| 5d1634d7 | 10905 | |
| 721956f4 AM |
10906 | /* Massage our args to the form they really have. */ |
| 10907 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 10908 | info = in_arg; |
| 5d1634d7 | 10909 | |
| 5d1634d7 | 10910 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
10911 | if (htab == NULL) |
| 10912 | return FALSE; | |
| 5d1634d7 | 10913 | |
| 721956f4 | 10914 | /* Make a note of the offset within the stubs for this entry. */ |
| 6f20ed8a AM |
10915 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
| 10916 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
| 721956f4 | 10917 | |
| 4ce794b7 | 10918 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 10919 | switch (stub_entry->stub_type) |
| 5d1634d7 | 10920 | { |
| 721956f4 | 10921 | case ppc_stub_long_branch: |
| ad8e1ba5 | 10922 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 10923 | /* Branches are relative. This is where we are going to. */ |
| 6911b7dc AM |
10924 | dest = (stub_entry->target_value |
| 10925 | + stub_entry->target_section->output_offset | |
| 10926 | + stub_entry->target_section->output_section->vma); | |
| 10927 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 10928 | off = dest; | |
| 5d1634d7 | 10929 | |
| 721956f4 AM |
10930 | /* And this is where we are coming from. */ |
| 10931 | off -= (stub_entry->stub_offset | |
| 6f20ed8a AM |
10932 | + stub_entry->group->stub_sec->output_offset |
| 10933 | + stub_entry->group->stub_sec->output_section->vma); | |
| e86ce104 | 10934 | |
| ac2df442 AM |
10935 | size = 4; |
| 10936 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 | 10937 | { |
| 25f53a85 | 10938 | bfd_vma r2off = get_r2off (info, stub_entry); |
| ad8e1ba5 | 10939 | |
| a7c49797 | 10940 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
10941 | { |
| 10942 | htab->stub_error = TRUE; | |
| 10943 | return FALSE; | |
| 10944 | } | |
| e7d1c40c | 10945 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 10946 | loc += 4; |
| a7c49797 | 10947 | size = 8; |
| ac2df442 AM |
10948 | if (PPC_HA (r2off) != 0) |
| 10949 | { | |
| e7d1c40c AM |
10950 | bfd_put_32 (htab->params->stub_bfd, |
| 10951 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| ac2df442 | 10952 | loc += 4; |
| a7c49797 AM |
10953 | size += 4; |
| 10954 | } | |
| 10955 | if (PPC_LO (r2off) != 0) | |
| 10956 | { | |
| 10957 | bfd_put_32 (htab->params->stub_bfd, | |
| 10958 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
| 10959 | loc += 4; | |
| 10960 | size += 4; | |
| ac2df442 | 10961 | } |
| ac2df442 | 10962 | off -= size - 4; |
| ad8e1ba5 | 10963 | } |
| e7d1c40c | 10964 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 10965 | |
| 5c3dead3 AM |
10966 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10967 | { | |
| bc30df16 AM |
10968 | info->callbacks->einfo |
| 10969 | (_("%P: long branch stub `%s' offset overflow\n"), | |
| 10970 | stub_entry->root.string); | |
| 5c3dead3 AM |
10971 | htab->stub_error = TRUE; |
| 10972 | return FALSE; | |
| 10973 | } | |
| ee75fd95 AM |
10974 | |
| 10975 | if (info->emitrelocations) | |
| 10976 | { | |
| 6f20ed8a | 10977 | r = get_relocs (stub_entry->group->stub_sec, 1); |
| 176a0d42 AM |
10978 | if (r == NULL) |
| 10979 | return FALSE; | |
| 6f20ed8a | 10980 | r->r_offset = loc - stub_entry->group->stub_sec->contents; |
| ee75fd95 AM |
10981 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
| 10982 | r->r_addend = dest; | |
| 10983 | if (stub_entry->h != NULL) | |
| 10984 | { | |
| 10985 | struct elf_link_hash_entry **hashes; | |
| 10986 | unsigned long symndx; | |
| 10987 | struct ppc_link_hash_entry *h; | |
| 10988 | ||
| e7d1c40c | 10989 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
| ee75fd95 AM |
10990 | if (hashes == NULL) |
| 10991 | { | |
| 10992 | bfd_size_type hsize; | |
| 10993 | ||
| 10994 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| e7d1c40c | 10995 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
| ee75fd95 AM |
10996 | if (hashes == NULL) |
| 10997 | return FALSE; | |
| e7d1c40c | 10998 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
| ee75fd95 AM |
10999 | htab->stub_globals = 1; |
| 11000 | } | |
| 11001 | symndx = htab->stub_globals++; | |
| 11002 | h = stub_entry->h; | |
| 11003 | hashes[symndx] = &h->elf; | |
| 11004 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 11005 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 11006 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
11007 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 11008 | /* H is an opd symbol. The addend must be zero. */ | |
| 11009 | r->r_addend = 0; | |
| 11010 | else | |
| 11011 | { | |
| 11012 | off = (h->elf.root.u.def.value | |
| 11013 | + h->elf.root.u.def.section->output_offset | |
| 11014 | + h->elf.root.u.def.section->output_section->vma); | |
| 11015 | r->r_addend -= off; | |
| 11016 | } | |
| 11017 | } | |
| 11018 | } | |
| 721956f4 | 11019 | break; |
| e86ce104 | 11020 | |
| 721956f4 | 11021 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 11022 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
11023 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 11024 | stub_entry->root.string + 9, | |
| b34976b6 | 11025 | FALSE, FALSE); |
| 721956f4 AM |
11026 | if (br_entry == NULL) |
| 11027 | { | |
| 8de848d8 | 11028 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
| 25f53a85 | 11029 | stub_entry->root.string); |
| b34976b6 AM |
11030 | htab->stub_error = TRUE; |
| 11031 | return FALSE; | |
| 721956f4 AM |
11032 | } |
| 11033 | ||
| 176a0d42 AM |
11034 | dest = (stub_entry->target_value |
| 11035 | + stub_entry->target_section->output_offset | |
| 11036 | + stub_entry->target_section->output_section->vma); | |
| 6911b7dc AM |
11037 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 11038 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 721956f4 | 11039 | |
| 176a0d42 | 11040 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 11041 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 11042 | |
| f94498ff | 11043 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 11044 | { |
| f94498ff | 11045 | br_entry->iter = 0; |
| 84f5d08e | 11046 | |
| f94498ff | 11047 | if (htab->relbrlt != NULL) |
| 84f5d08e | 11048 | { |
| f94498ff AM |
11049 | /* Create a reloc for the branch lookup table entry. */ |
| 11050 | Elf_Internal_Rela rela; | |
| 11051 | bfd_byte *rl; | |
| 11052 | ||
| 11053 | rela.r_offset = (br_entry->offset | |
| 11054 | + htab->brlt->output_offset | |
| 11055 | + htab->brlt->output_section->vma); | |
| 11056 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 11057 | rela.r_addend = dest; |
| f94498ff AM |
11058 | |
| 11059 | rl = htab->relbrlt->contents; | |
| 11060 | rl += (htab->relbrlt->reloc_count++ | |
| 11061 | * sizeof (Elf64_External_Rela)); | |
| 11062 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 11063 | } | |
| 11064 | else if (info->emitrelocations) | |
| 11065 | { | |
| 176a0d42 AM |
11066 | r = get_relocs (htab->brlt, 1); |
| 11067 | if (r == NULL) | |
| 11068 | return FALSE; | |
| 11069 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 11070 | normal reloc processing. Symbols and offsets are not | |
| 11071 | translated from input file to output file form, so | |
| 11072 | set up the offset per the output file. */ | |
| f94498ff AM |
11073 | r->r_offset = (br_entry->offset |
| 11074 | + htab->brlt->output_offset | |
| 11075 | + htab->brlt->output_section->vma); | |
| 11076 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 11077 | r->r_addend = dest; |
| 84f5d08e | 11078 | } |
| 84f5d08e | 11079 | } |
| 721956f4 | 11080 | |
| 176a0d42 AM |
11081 | dest = (br_entry->offset |
| 11082 | + htab->brlt->output_offset | |
| 11083 | + htab->brlt->output_section->vma); | |
| 11084 | ||
| 11085 | off = (dest | |
| 4ce794b7 | 11086 | - elf_gp (htab->brlt->output_section->owner) |
| 6f20ed8a | 11087 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 11088 | |
| ad8e1ba5 | 11089 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 | 11090 | { |
| 25f53a85 | 11091 | info->callbacks->einfo |
| bc30df16 | 11092 | (_("%P: linkage table error against `%T'\n"), |
| 721956f4 | 11093 | stub_entry->root.string); |
| 5d1634d7 | 11094 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
11095 | htab->stub_error = TRUE; |
| 11096 | return FALSE; | |
| 5d1634d7 | 11097 | } |
| 41bd81ab | 11098 | |
| 176a0d42 AM |
11099 | if (info->emitrelocations) |
| 11100 | { | |
| 6f20ed8a | 11101 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
| 176a0d42 AM |
11102 | if (r == NULL) |
| 11103 | return FALSE; | |
| 6f20ed8a | 11104 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
| 7cfbafbc AM |
11105 | if (bfd_big_endian (info->output_bfd)) |
| 11106 | r[0].r_offset += 2; | |
| 00f412ee | 11107 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 176a0d42 AM |
11108 | r[0].r_offset += 4; |
| 11109 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 11110 | r[0].r_addend = dest; | |
| 11111 | if (PPC_HA (off) != 0) | |
| 11112 | { | |
| 11113 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 11114 | r[1].r_offset = r[0].r_offset + 4; | |
| 11115 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 11116 | r[1].r_addend = r[0].r_addend; | |
| 11117 | } | |
| 11118 | } | |
| 11119 | ||
| 00f412ee | 11120 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ad8e1ba5 | 11121 | { |
| 176a0d42 | 11122 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11123 | { |
| 11124 | size = 16; | |
| e7d1c40c | 11125 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 11126 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 11127 | loc += 4; |
| e7d1c40c | 11128 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 11129 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
11130 | } |
| 11131 | else | |
| 11132 | { | |
| 11133 | size = 12; | |
| e7d1c40c AM |
11134 | bfd_put_32 (htab->params->stub_bfd, |
| 11135 | LD_R12_0R2 | PPC_LO (off), loc); | |
| ac2df442 | 11136 | } |
| ad8e1ba5 AM |
11137 | } |
| 11138 | else | |
| 11139 | { | |
| 25f53a85 | 11140 | bfd_vma r2off = get_r2off (info, stub_entry); |
| aa374f67 | 11141 | |
| a7c49797 | 11142 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
11143 | { |
| 11144 | htab->stub_error = TRUE; | |
| 11145 | return FALSE; | |
| 11146 | } | |
| ad8e1ba5 | 11147 | |
| e7d1c40c | 11148 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 11149 | loc += 4; |
| 00f412ee | 11150 | size = 16; |
| 176a0d42 | 11151 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11152 | { |
| 11153 | size += 4; | |
| e7d1c40c | 11154 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 11155 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 11156 | loc += 4; |
| e7d1c40c | 11157 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 11158 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
11159 | } |
| 11160 | else | |
| e7d1c40c | 11161 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
11162 | |
| 11163 | if (PPC_HA (r2off) != 0) | |
| 11164 | { | |
| 11165 | size += 4; | |
| 00f412ee | 11166 | loc += 4; |
| e7d1c40c AM |
11167 | bfd_put_32 (htab->params->stub_bfd, |
| 11168 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 00f412ee AM |
11169 | } |
| 11170 | if (PPC_LO (r2off) != 0) | |
| 11171 | { | |
| 11172 | size += 4; | |
| ac2df442 | 11173 | loc += 4; |
| e7d1c40c AM |
11174 | bfd_put_32 (htab->params->stub_bfd, |
| 11175 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
| ac2df442 | 11176 | } |
| ad8e1ba5 AM |
11177 | } |
| 11178 | loc += 4; | |
| e7d1c40c | 11179 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
| ad8e1ba5 | 11180 | loc += 4; |
| e7d1c40c | 11181 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
| 721956f4 | 11182 | break; |
| 5d1634d7 | 11183 | |
| 721956f4 | 11184 | case ppc_stub_plt_call: |
| 794e51c0 | 11185 | case ppc_stub_plt_call_r2save: |
| e054468f | 11186 | if (stub_entry->h != NULL |
| b31867b6 AM |
11187 | && stub_entry->h->is_func_descriptor |
| 11188 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 11189 | { |
| b31867b6 AM |
11190 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 11191 | ||
| 11192 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 6f20ed8a | 11193 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
| 8c5b4e52 AM |
11194 | if (fh->elf.root.type == bfd_link_hash_undefined |
| 11195 | && (stub_entry->h->elf.root.type == bfd_link_hash_defined | |
| 11196 | || stub_entry->h->elf.root.type == bfd_link_hash_defweak)) | |
| b31867b6 | 11197 | fh->elf.root.type = bfd_link_hash_undefweak; |
| c862ae31 AM |
11198 | } |
| 11199 | ||
| 721956f4 | 11200 | /* Now build the stub. */ |
| e054468f | 11201 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 11202 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
11203 | abort (); |
| 11204 | ||
| 33e44f2e | 11205 | plt = htab->elf.splt; |
| 25f23106 AM |
11206 | if (!htab->elf.dynamic_sections_created |
| 11207 | || stub_entry->h == NULL | |
| 11208 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 11209 | plt = htab->elf.iplt; |
| e054468f AM |
11210 | |
| 11211 | dest += plt->output_offset + plt->output_section->vma; | |
| 11212 | ||
| 11213 | if (stub_entry->h == NULL | |
| 11214 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 11215 | { | |
| 11216 | Elf_Internal_Rela rela; | |
| 11217 | bfd_byte *rl; | |
| 11218 | ||
| 11219 | rela.r_offset = dest; | |
| ee67d69a AM |
11220 | if (htab->opd_abi) |
| 11221 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 11222 | else | |
| 11223 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
11224 | rela.r_addend = (stub_entry->target_value |
| 11225 | + stub_entry->target_section->output_offset | |
| 11226 | + stub_entry->target_section->output_section->vma); | |
| 11227 | ||
| 33e44f2e AM |
11228 | rl = (htab->elf.irelplt->contents |
| 11229 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 AM |
11230 | * sizeof (Elf64_External_Rela))); |
| 11231 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f | 11232 | stub_entry->plt_ent->plt.offset |= 1; |
| 82e66161 | 11233 | htab->local_ifunc_resolver = 1; |
| e054468f | 11234 | } |
| 176a0d42 AM |
11235 | |
| 11236 | off = (dest | |
| e054468f | 11237 | - elf_gp (plt->output_section->owner) |
| 6f20ed8a | 11238 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 11239 | |
| ad8e1ba5 | 11240 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 | 11241 | { |
| 25f53a85 | 11242 | info->callbacks->einfo |
| 695344c0 | 11243 | /* xgettext:c-format */ |
| bc30df16 | 11244 | (_("%P: linkage table error against `%T'\n"), |
| e054468f AM |
11245 | stub_entry->h != NULL |
| 11246 | ? stub_entry->h->elf.root.root.string | |
| 11247 | : "<local sym>"); | |
| 721956f4 | 11248 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
11249 | htab->stub_error = TRUE; |
| 11250 | return FALSE; | |
| 721956f4 AM |
11251 | } |
| 11252 | ||
| e7d1c40c | 11253 | if (htab->params->plt_stub_align != 0) |
| 794e51c0 AM |
11254 | { |
| 11255 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
| 11256 | ||
| 6f20ed8a AM |
11257 | stub_entry->group->stub_sec->size += pad; |
| 11258 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
| 794e51c0 AM |
11259 | loc += pad; |
| 11260 | } | |
| 11261 | ||
| 176a0d42 AM |
11262 | r = NULL; |
| 11263 | if (info->emitrelocations) | |
| 11264 | { | |
| 6f20ed8a | 11265 | r = get_relocs (stub_entry->group->stub_sec, |
| 3ba720c7 AM |
11266 | ((PPC_HA (off) != 0) |
| 11267 | + (htab->opd_abi | |
| e7d1c40c | 11268 | ? 2 + (htab->params->plt_static_chain |
| 3ba720c7 AM |
11269 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 11270 | : 1))); | |
| 176a0d42 AM |
11271 | if (r == NULL) |
| 11272 | return FALSE; | |
| 6f20ed8a | 11273 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
| 7cfbafbc AM |
11274 | if (bfd_big_endian (info->output_bfd)) |
| 11275 | r[0].r_offset += 2; | |
| 176a0d42 AM |
11276 | r[0].r_addend = dest; |
| 11277 | } | |
| a7f2871e AM |
11278 | if (stub_entry->h != NULL |
| 11279 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 11280 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 11281 | && htab->params->tls_get_addr_opt) |
| 794e51c0 | 11282 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
| a7f2871e | 11283 | else |
| 794e51c0 | 11284 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
| 721956f4 AM |
11285 | size = p - loc; |
| 11286 | break; | |
| 11287 | ||
| a4b6fadd AM |
11288 | case ppc_stub_save_res: |
| 11289 | return TRUE; | |
| 11290 | ||
| 721956f4 AM |
11291 | default: |
| 11292 | BFD_FAIL (); | |
| b34976b6 | 11293 | return FALSE; |
| 721956f4 AM |
11294 | } |
| 11295 | ||
| 6f20ed8a | 11296 | stub_entry->group->stub_sec->size += size; |
| 97b639ba | 11297 | |
| e7d1c40c | 11298 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
11299 | { |
| 11300 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
11301 | size_t len1, len2; |
| 11302 | char *name; | |
| 11303 | const char *const stub_str[] = { "long_branch", | |
| 11304 | "long_branch_r2off", | |
| 11305 | "plt_branch", | |
| 11306 | "plt_branch_r2off", | |
| 794e51c0 | 11307 | "plt_call", |
| ee75fd95 AM |
11308 | "plt_call" }; |
| 11309 | ||
| 11310 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 11311 | len2 = strlen (stub_entry->root.string); | |
| 11312 | name = bfd_malloc (len1 + len2 + 2); | |
| 11313 | if (name == NULL) | |
| 11314 | return FALSE; | |
| 11315 | memcpy (name, stub_entry->root.string, 9); | |
| 11316 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 11317 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 11318 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
11319 | if (h == NULL) |
| 11320 | return FALSE; | |
| 11321 | if (h->root.type == bfd_link_hash_new) | |
| 11322 | { | |
| 11323 | h->root.type = bfd_link_hash_defined; | |
| 6f20ed8a | 11324 | h->root.u.def.section = stub_entry->group->stub_sec; |
| 97b639ba | 11325 | h->root.u.def.value = stub_entry->stub_offset; |
| f5385ebf AM |
11326 | h->ref_regular = 1; |
| 11327 | h->def_regular = 1; | |
| 11328 | h->ref_regular_nonweak = 1; | |
| 11329 | h->forced_local = 1; | |
| 11330 | h->non_elf = 0; | |
| 2ec55de3 | 11331 | h->root.linker_def = 1; |
| 97b639ba AM |
11332 | } |
| 11333 | } | |
| 11334 | ||
| b34976b6 | 11335 | return TRUE; |
| 721956f4 AM |
11336 | } |
| 11337 | ||
| 11338 | /* As above, but don't actually build the stub. Just bump offset so | |
| 11339 | we know stub section sizes, and select plt_branch stubs where | |
| 11340 | long_branch stubs won't do. */ | |
| 11341 | ||
| b34976b6 | 11342 | static bfd_boolean |
| 4ce794b7 | 11343 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
11344 | { |
| 11345 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 11346 | struct bfd_link_info *info; |
| 721956f4 AM |
11347 | struct ppc_link_hash_table *htab; |
| 11348 | bfd_vma off; | |
| 11349 | int size; | |
| 11350 | ||
| 11351 | /* Massage our args to the form they really have. */ | |
| 11352 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
11353 | info = in_arg; |
| 11354 | ||
| 11355 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
11356 | if (htab == NULL) |
| 11357 | return FALSE; | |
| 721956f4 | 11358 | |
| a4b6fadd AM |
11359 | if (stub_entry->h != NULL |
| 11360 | && stub_entry->h->save_res | |
| 11361 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
| 11362 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
| 11363 | { | |
| 11364 | /* Don't make stubs to out-of-line register save/restore | |
| 11365 | functions. Instead, emit copies of the functions. */ | |
| 11366 | stub_entry->group->needs_save_res = 1; | |
| 11367 | stub_entry->stub_type = ppc_stub_save_res; | |
| 11368 | return TRUE; | |
| 11369 | } | |
| 11370 | ||
| 794e51c0 AM |
11371 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 11372 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 721956f4 | 11373 | { |
| e054468f AM |
11374 | asection *plt; |
| 11375 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 11376 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 11377 | abort (); |
| 33e44f2e | 11378 | plt = htab->elf.splt; |
| 25f23106 AM |
11379 | if (!htab->elf.dynamic_sections_created |
| 11380 | || stub_entry->h == NULL | |
| 11381 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 11382 | plt = htab->elf.iplt; |
| e054468f AM |
11383 | off += (plt->output_offset |
| 11384 | + plt->output_section->vma | |
| 11385 | - elf_gp (plt->output_section->owner) | |
| 6f20ed8a | 11386 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 11387 | |
| 794e51c0 | 11388 | size = plt_stub_size (htab, stub_entry, off); |
| e7d1c40c | 11389 | if (htab->params->plt_stub_align) |
| 794e51c0 | 11390 | size += plt_stub_pad (htab, stub_entry, off); |
| 176a0d42 AM |
11391 | if (info->emitrelocations) |
| 11392 | { | |
| 6f20ed8a | 11393 | stub_entry->group->stub_sec->reloc_count |
| b9e5796b AM |
11394 | += ((PPC_HA (off) != 0) |
| 11395 | + (htab->opd_abi | |
| e7d1c40c | 11396 | ? 2 + (htab->params->plt_static_chain |
| b9e5796b AM |
11397 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 11398 | : 1)); | |
| 6f20ed8a | 11399 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
| 176a0d42 | 11400 | } |
| 721956f4 AM |
11401 | } |
| 11402 | else | |
| 11403 | { | |
| ad8e1ba5 AM |
11404 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 11405 | variants. */ | |
| ac2df442 | 11406 | bfd_vma r2off = 0; |
| 6911b7dc | 11407 | bfd_vma local_off = 0; |
| ac2df442 | 11408 | |
| 721956f4 AM |
11409 | off = (stub_entry->target_value |
| 11410 | + stub_entry->target_section->output_offset | |
| 11411 | + stub_entry->target_section->output_section->vma); | |
| 6f20ed8a AM |
11412 | off -= (stub_entry->group->stub_sec->size |
| 11413 | + stub_entry->group->stub_sec->output_offset | |
| 11414 | + stub_entry->group->stub_sec->output_section->vma); | |
| 721956f4 | 11415 | |
| ad8e1ba5 AM |
11416 | /* Reset the stub type from the plt variant in case we now |
| 11417 | can reach with a shorter stub. */ | |
| 11418 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 11419 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 11420 | ||
| 11421 | size = 4; | |
| 11422 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 11423 | { | |
| 25f53a85 | 11424 | r2off = get_r2off (info, stub_entry); |
| a7c49797 | 11425 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
11426 | { |
| 11427 | htab->stub_error = TRUE; | |
| 11428 | return FALSE; | |
| 11429 | } | |
| a7c49797 | 11430 | size = 8; |
| ac2df442 | 11431 | if (PPC_HA (r2off) != 0) |
| a7c49797 AM |
11432 | size += 4; |
| 11433 | if (PPC_LO (r2off) != 0) | |
| 11434 | size += 4; | |
| ac2df442 | 11435 | off -= size - 4; |
| ad8e1ba5 AM |
11436 | } |
| 11437 | ||
| 6911b7dc AM |
11438 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
| 11439 | ||
| b9e5796b AM |
11440 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
| 11441 | Do the same for -R objects without function descriptors. */ | |
| 11442 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
| 11443 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
| a7c49797 AM |
11444 | && r2off == 0 |
| 11445 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
| 721956f4 AM |
11446 | { |
| 11447 | struct ppc_branch_hash_entry *br_entry; | |
| 11448 | ||
| 11449 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 11450 | stub_entry->root.string + 9, | |
| b34976b6 | 11451 | TRUE, FALSE); |
| 721956f4 AM |
11452 | if (br_entry == NULL) |
| 11453 | { | |
| 8de848d8 | 11454 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
| 25f53a85 | 11455 | stub_entry->root.string); |
| b34976b6 AM |
11456 | htab->stub_error = TRUE; |
| 11457 | return FALSE; | |
| 721956f4 AM |
11458 | } |
| 11459 | ||
| 11460 | if (br_entry->iter != htab->stub_iteration) | |
| 11461 | { | |
| 11462 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
11463 | br_entry->offset = htab->brlt->size; |
| 11464 | htab->brlt->size += 8; | |
| 63bc6f6c | 11465 | |
| ee75fd95 | 11466 | if (htab->relbrlt != NULL) |
| eea6121a | 11467 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
11468 | else if (info->emitrelocations) |
| 11469 | { | |
| 11470 | htab->brlt->reloc_count += 1; | |
| 11471 | htab->brlt->flags |= SEC_RELOC; | |
| 11472 | } | |
| 721956f4 | 11473 | } |
| ad8e1ba5 AM |
11474 | |
| 11475 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
11476 | off = (br_entry->offset |
| 11477 | + htab->brlt->output_offset | |
| 11478 | + htab->brlt->output_section->vma | |
| 11479 | - elf_gp (htab->brlt->output_section->owner) | |
| 6f20ed8a | 11480 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| ac2df442 | 11481 | |
| 176a0d42 AM |
11482 | if (info->emitrelocations) |
| 11483 | { | |
| 6f20ed8a AM |
11484 | stub_entry->group->stub_sec->reloc_count |
| 11485 | += 1 + (PPC_HA (off) != 0); | |
| 11486 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
| 176a0d42 AM |
11487 | } |
| 11488 | ||
| 00f412ee | 11489 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ac2df442 AM |
11490 | { |
| 11491 | size = 12; | |
| 176a0d42 | 11492 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11493 | size = 16; |
| 11494 | } | |
| 11495 | else | |
| 11496 | { | |
| 00f412ee | 11497 | size = 16; |
| 176a0d42 | 11498 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11499 | size += 4; |
| 11500 | ||
| 11501 | if (PPC_HA (r2off) != 0) | |
| 11502 | size += 4; | |
| 00f412ee AM |
11503 | if (PPC_LO (r2off) != 0) |
| 11504 | size += 4; | |
| ac2df442 | 11505 | } |
| 721956f4 | 11506 | } |
| 84f5d08e AM |
11507 | else if (info->emitrelocations) |
| 11508 | { | |
| 6f20ed8a AM |
11509 | stub_entry->group->stub_sec->reloc_count += 1; |
| 11510 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
| 84f5d08e | 11511 | } |
| 721956f4 AM |
11512 | } |
| 11513 | ||
| 6f20ed8a | 11514 | stub_entry->group->stub_sec->size += size; |
| b34976b6 | 11515 | return TRUE; |
| 721956f4 AM |
11516 | } |
| 11517 | ||
| 11518 | /* Set up various things so that we can make a list of input sections | |
| 11519 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 11520 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
11521 | |
| 11522 | int | |
| e7d1c40c | 11523 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
| 721956f4 | 11524 | { |
| 6f20ed8a | 11525 | unsigned int id; |
| 721956f4 AM |
11526 | bfd_size_type amt; |
| 11527 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11528 | ||
| 4dfe6ac6 NC |
11529 | if (htab == NULL) |
| 11530 | return -1; | |
| 4c52953f | 11531 | |
| 6f20ed8a AM |
11532 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
| 11533 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
| 11534 | htab->sec_info = bfd_zmalloc (amt); | |
| 11535 | if (htab->sec_info == NULL) | |
| 721956f4 AM |
11536 | return -1; |
| 11537 | ||
| 3d6f9012 AM |
11538 | /* Set toc_off for com, und, abs and ind sections. */ |
| 11539 | for (id = 0; id < 3; id++) | |
| 6f20ed8a | 11540 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
| 734b6cf9 | 11541 | |
| 721956f4 AM |
11542 | return 1; |
| 11543 | } | |
| 11544 | ||
| 927be08e AM |
11545 | /* Set up for first pass at multitoc partitioning. */ |
| 11546 | ||
| 11547 | void | |
| 11548 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
| 11549 | { | |
| 11550 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11551 | ||
| 1c865ab2 | 11552 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
| 927be08e AM |
11553 | htab->toc_bfd = NULL; |
| 11554 | htab->toc_first_sec = NULL; | |
| 11555 | } | |
| 11556 | ||
| e717da7e AM |
11557 | /* The linker repeatedly calls this function for each TOC input section |
| 11558 | and linker generated GOT section. Group input bfds such that the toc | |
| 927be08e | 11559 | within a group is less than 64k in size. */ |
| ad8e1ba5 | 11560 | |
| 927be08e | 11561 | bfd_boolean |
| 4ce794b7 | 11562 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
11563 | { |
| 11564 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| d77c8a4b | 11565 | bfd_vma addr, off, limit; |
| ad8e1ba5 | 11566 | |
| 4dfe6ac6 NC |
11567 | if (htab == NULL) |
| 11568 | return FALSE; | |
| 11569 | ||
| 927be08e | 11570 | if (!htab->second_toc_pass) |
| 4c52953f | 11571 | { |
| 927be08e | 11572 | /* Keep track of the first .toc or .got section for this input bfd. */ |
| a4fd3de5 AM |
11573 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
| 11574 | ||
| 11575 | if (new_bfd) | |
| bf102f86 AM |
11576 | { |
| 11577 | htab->toc_bfd = isec->owner; | |
| 11578 | htab->toc_first_sec = isec; | |
| 11579 | } | |
| 927be08e | 11580 | |
| bf102f86 AM |
11581 | addr = isec->output_offset + isec->output_section->vma; |
| 11582 | off = addr - htab->toc_curr; | |
| d77c8a4b AM |
11583 | limit = 0x80008000; |
| 11584 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
| 11585 | limit = 0x10000; | |
| 11586 | if (off + isec->size > limit) | |
| bf102f86 AM |
11587 | { |
| 11588 | addr = (htab->toc_first_sec->output_offset | |
| 11589 | + htab->toc_first_sec->output_section->vma); | |
| 11590 | htab->toc_curr = addr; | |
| a27e685f | 11591 | htab->toc_curr &= -TOC_BASE_ALIGN; |
| bf102f86 | 11592 | } |
| 99877b66 | 11593 | |
| 927be08e AM |
11594 | /* toc_curr is the base address of this toc group. Set elf_gp |
| 11595 | for the input section to be the offset relative to the | |
| 11596 | output toc base plus 0x8000. Making the input elf_gp an | |
| 11597 | offset allows us to move the toc as a whole without | |
| 11598 | recalculating input elf_gp. */ | |
| 11599 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
| 11600 | off += TOC_BASE_OFF; | |
| 11601 | ||
| 11602 | /* Die if someone uses a linker script that doesn't keep input | |
| 11603 | file .toc and .got together. */ | |
| a4fd3de5 AM |
11604 | if (new_bfd |
| 11605 | && elf_gp (isec->owner) != 0 | |
| 927be08e AM |
11606 | && elf_gp (isec->owner) != off) |
| 11607 | return FALSE; | |
| 11608 | ||
| 11609 | elf_gp (isec->owner) = off; | |
| 11610 | return TRUE; | |
| 4c52953f | 11611 | } |
| 927be08e AM |
11612 | |
| 11613 | /* During the second pass toc_first_sec points to the start of | |
| 11614 | a toc group, and toc_curr is used to track the old elf_gp. | |
| 11615 | We use toc_bfd to ensure we only look at each bfd once. */ | |
| 11616 | if (htab->toc_bfd == isec->owner) | |
| 11617 | return TRUE; | |
| 11618 | htab->toc_bfd = isec->owner; | |
| 11619 | ||
| 11620 | if (htab->toc_first_sec == NULL | |
| 11621 | || htab->toc_curr != elf_gp (isec->owner)) | |
| 11622 | { | |
| 11623 | htab->toc_curr = elf_gp (isec->owner); | |
| 11624 | htab->toc_first_sec = isec; | |
| 11625 | } | |
| 11626 | addr = (htab->toc_first_sec->output_offset | |
| 11627 | + htab->toc_first_sec->output_section->vma); | |
| 11628 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
| 11629 | elf_gp (isec->owner) = off; | |
| 11630 | ||
| 11631 | return TRUE; | |
| ad8e1ba5 AM |
11632 | } |
| 11633 | ||
| 927be08e AM |
11634 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
| 11635 | symbol H. */ | |
| 11636 | ||
| 11637 | static bfd_boolean | |
| 11638 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 11639 | { | |
| 11640 | if (h->root.type == bfd_link_hash_indirect) | |
| 11641 | return TRUE; | |
| 11642 | ||
| 927be08e AM |
11643 | merge_got_entries (&h->got.glist); |
| 11644 | ||
| 11645 | return TRUE; | |
| 11646 | } | |
| 11647 | ||
| 11648 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
| 11649 | symbol H. */ | |
| 11650 | ||
| 11651 | static bfd_boolean | |
| 11652 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
| 11653 | { | |
| 11654 | struct got_entry *gent; | |
| 11655 | ||
| 11656 | if (h->root.type == bfd_link_hash_indirect) | |
| 11657 | return TRUE; | |
| 11658 | ||
| 927be08e AM |
11659 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 11660 | if (!gent->is_indirect) | |
| 11661 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
| 11662 | return TRUE; | |
| 11663 | } | |
| 11664 | ||
| 11665 | /* Called on the first multitoc pass after the last call to | |
| 11666 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
| 11667 | entries. */ | |
| 11668 | ||
| 11669 | bfd_boolean | |
| 11670 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
| ad8e1ba5 AM |
11671 | { |
| 11672 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
11673 | struct bfd *ibfd, *ibfd2; |
| 11674 | bfd_boolean done_something; | |
| 11675 | ||
| 11676 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
| ad8e1ba5 | 11677 | |
| 7865406b AM |
11678 | if (!htab->do_multi_toc) |
| 11679 | return FALSE; | |
| 11680 | ||
| d0fae19d | 11681 | /* Merge global sym got entries within a toc group. */ |
| 927be08e AM |
11682 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
| 11683 | ||
| 11684 | /* And tlsld_got. */ | |
| c72f2fb2 | 11685 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11686 | { |
| 11687 | struct got_entry *ent, *ent2; | |
| 11688 | ||
| 11689 | if (!is_ppc64_elf (ibfd)) | |
| 11690 | continue; | |
| 11691 | ||
| 11692 | ent = ppc64_tlsld_got (ibfd); | |
| 11693 | if (!ent->is_indirect | |
| 11694 | && ent->got.offset != (bfd_vma) -1) | |
| 11695 | { | |
| c72f2fb2 | 11696 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
| 927be08e AM |
11697 | { |
| 11698 | if (!is_ppc64_elf (ibfd2)) | |
| 11699 | continue; | |
| 11700 | ||
| 11701 | ent2 = ppc64_tlsld_got (ibfd2); | |
| 11702 | if (!ent2->is_indirect | |
| 11703 | && ent2->got.offset != (bfd_vma) -1 | |
| 11704 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
| 11705 | { | |
| 11706 | ent2->is_indirect = TRUE; | |
| 11707 | ent2->got.ent = ent; | |
| 11708 | } | |
| 11709 | } | |
| 11710 | } | |
| 11711 | } | |
| 11712 | ||
| 11713 | /* Zap sizes of got sections. */ | |
| 33e44f2e AM |
11714 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
| 11715 | htab->elf.irelplt->size -= htab->got_reli_size; | |
| 927be08e AM |
11716 | htab->got_reli_size = 0; |
| 11717 | ||
| c72f2fb2 | 11718 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11719 | { |
| 11720 | asection *got, *relgot; | |
| 11721 | ||
| 11722 | if (!is_ppc64_elf (ibfd)) | |
| 11723 | continue; | |
| 11724 | ||
| 11725 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11726 | if (got != NULL) | |
| 11727 | { | |
| 11728 | got->rawsize = got->size; | |
| 11729 | got->size = 0; | |
| 11730 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
| 11731 | relgot->rawsize = relgot->size; | |
| 11732 | relgot->size = 0; | |
| 11733 | } | |
| 11734 | } | |
| 11735 | ||
| 11736 | /* Now reallocate the got, local syms first. We don't need to | |
| 11737 | allocate section contents again since we never increase size. */ | |
| c72f2fb2 | 11738 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11739 | { |
| 11740 | struct got_entry **lgot_ents; | |
| 11741 | struct got_entry **end_lgot_ents; | |
| 11742 | struct plt_entry **local_plt; | |
| 11743 | struct plt_entry **end_local_plt; | |
| f961d9dd | 11744 | unsigned char *lgot_masks; |
| 927be08e AM |
11745 | bfd_size_type locsymcount; |
| 11746 | Elf_Internal_Shdr *symtab_hdr; | |
| 19e08130 | 11747 | asection *s; |
| 927be08e AM |
11748 | |
| 11749 | if (!is_ppc64_elf (ibfd)) | |
| 11750 | continue; | |
| 11751 | ||
| 11752 | lgot_ents = elf_local_got_ents (ibfd); | |
| 11753 | if (!lgot_ents) | |
| 11754 | continue; | |
| 11755 | ||
| 11756 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 11757 | locsymcount = symtab_hdr->sh_info; | |
| 11758 | end_lgot_ents = lgot_ents + locsymcount; | |
| 11759 | local_plt = (struct plt_entry **) end_lgot_ents; | |
| 11760 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 11761 | lgot_masks = (unsigned char *) end_local_plt; |
| 927be08e | 11762 | s = ppc64_elf_tdata (ibfd)->got; |
| 927be08e AM |
11763 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 11764 | { | |
| 11765 | struct got_entry *ent; | |
| 11766 | ||
| 11767 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| d0fae19d | 11768 | { |
| 19e08130 AM |
11769 | unsigned int ent_size = 8; |
| 11770 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 11771 | ||
| d0fae19d AM |
11772 | ent->got.offset = s->size; |
| 11773 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
| d0fae19d | 11774 | { |
| 19e08130 AM |
11775 | ent_size *= 2; |
| 11776 | rel_size *= 2; | |
| 11777 | } | |
| 11778 | s->size += ent_size; | |
| 11779 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 11780 | { | |
| 33e44f2e | 11781 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
11782 | htab->got_reli_size += rel_size; |
| 11783 | } | |
| 0e1862bb | 11784 | else if (bfd_link_pic (info)) |
| 19e08130 AM |
11785 | { |
| 11786 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11787 | srel->size += rel_size; | |
| d0fae19d AM |
11788 | } |
| 11789 | } | |
| 927be08e AM |
11790 | } |
| 11791 | } | |
| 11792 | ||
| 11793 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
| 11794 | ||
| c72f2fb2 | 11795 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11796 | { |
| 11797 | struct got_entry *ent; | |
| 11798 | ||
| 11799 | if (!is_ppc64_elf (ibfd)) | |
| 11800 | continue; | |
| 11801 | ||
| 11802 | ent = ppc64_tlsld_got (ibfd); | |
| 11803 | if (!ent->is_indirect | |
| 11804 | && ent->got.offset != (bfd_vma) -1) | |
| 11805 | { | |
| 11806 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
| 11807 | ent->got.offset = s->size; | |
| 11808 | s->size += 16; | |
| 0e1862bb | 11809 | if (bfd_link_pic (info)) |
| 927be08e AM |
11810 | { |
| 11811 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11812 | srel->size += sizeof (Elf64_External_Rela); | |
| 11813 | } | |
| 11814 | } | |
| 11815 | } | |
| 11816 | ||
| 33e44f2e | 11817 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
| 927be08e | 11818 | if (!done_something) |
| c72f2fb2 | 11819 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11820 | { |
| 11821 | asection *got; | |
| 11822 | ||
| 11823 | if (!is_ppc64_elf (ibfd)) | |
| 11824 | continue; | |
| 11825 | ||
| 11826 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11827 | if (got != NULL) | |
| 11828 | { | |
| 11829 | done_something = got->rawsize != got->size; | |
| 11830 | if (done_something) | |
| 11831 | break; | |
| 11832 | } | |
| 11833 | } | |
| 11834 | ||
| 11835 | if (done_something) | |
| e7d1c40c | 11836 | (*htab->params->layout_sections_again) (); |
| 927be08e AM |
11837 | |
| 11838 | /* Set up for second pass over toc sections to recalculate elf_gp | |
| 11839 | on input sections. */ | |
| 11840 | htab->toc_bfd = NULL; | |
| 11841 | htab->toc_first_sec = NULL; | |
| 11842 | htab->second_toc_pass = TRUE; | |
| 11843 | return done_something; | |
| 11844 | } | |
| 11845 | ||
| 11846 | /* Called after second pass of multitoc partitioning. */ | |
| 11847 | ||
| 11848 | void | |
| 11849 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
| 11850 | { | |
| 11851 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11852 | ||
| 11853 | /* After the second pass, toc_curr tracks the TOC offset used | |
| 11854 | for code sections below in ppc64_elf_next_input_section. */ | |
| 3d6f9012 | 11855 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
11856 | } |
| 11857 | ||
| 9b5ecbd0 AM |
11858 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 11859 | calls, then there's no need to use toc adjusting stubs when branching | |
| 11860 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
11861 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 11862 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 11863 | for a stub was detected. If called from the top level, a return of | |
| 11864 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
11865 | |
| 11866 | static int | |
| 4ce794b7 | 11867 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 11868 | { |
| 9b5ecbd0 | 11869 | int ret; |
| 70cc837d AM |
11870 | |
| 11871 | /* Mark this section as checked. */ | |
| 11872 | isec->call_check_done = 1; | |
| 9b5ecbd0 | 11873 | |
| 772119ce AM |
11874 | /* We know none of our code bearing sections will need toc stubs. */ |
| 11875 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 11876 | return 0; | |
| 11877 | ||
| eea6121a | 11878 | if (isec->size == 0) |
| 082c50f8 AM |
11879 | return 0; |
| 11880 | ||
| 4c52953f AM |
11881 | if (isec->output_section == NULL) |
| 11882 | return 0; | |
| 11883 | ||
| 4c52953f | 11884 | ret = 0; |
| 70cc837d | 11885 | if (isec->reloc_count != 0) |
| 9b5ecbd0 | 11886 | { |
| 70cc837d AM |
11887 | Elf_Internal_Rela *relstart, *rel; |
| 11888 | Elf_Internal_Sym *local_syms; | |
| 11889 | struct ppc_link_hash_table *htab; | |
| 2917689a | 11890 | |
| 70cc837d AM |
11891 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
| 11892 | info->keep_memory); | |
| 11893 | if (relstart == NULL) | |
| 11894 | return -1; | |
| 90aecf7a | 11895 | |
| 70cc837d AM |
11896 | /* Look for branches to outside of this section. */ |
| 11897 | local_syms = NULL; | |
| 11898 | htab = ppc_hash_table (info); | |
| 11899 | if (htab == NULL) | |
| 11900 | return -1; | |
| 4c52953f | 11901 | |
| 70cc837d | 11902 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
| 4c52953f | 11903 | { |
| 70cc837d AM |
11904 | enum elf_ppc64_reloc_type r_type; |
| 11905 | unsigned long r_symndx; | |
| 11906 | struct elf_link_hash_entry *h; | |
| 11907 | struct ppc_link_hash_entry *eh; | |
| 11908 | Elf_Internal_Sym *sym; | |
| 11909 | asection *sym_sec; | |
| 11910 | struct _opd_sec_data *opd; | |
| 11911 | bfd_vma sym_value; | |
| 11912 | bfd_vma dest; | |
| 11913 | ||
| 11914 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 11915 | if (r_type != R_PPC64_REL24 | |
| 11916 | && r_type != R_PPC64_REL14 | |
| 11917 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11918 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 11919 | continue; | |
| 4c52953f | 11920 | |
| 70cc837d AM |
11921 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 11922 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 11923 | isec->owner)) | |
| 4c52953f | 11924 | { |
| 70cc837d AM |
11925 | ret = -1; |
| 11926 | break; | |
| 11927 | } | |
| 4c52953f | 11928 | |
| 70cc837d AM |
11929 | /* Calls to dynamic lib functions go through a plt call stub |
| 11930 | that uses r2. */ | |
| 11931 | eh = (struct ppc_link_hash_entry *) h; | |
| 11932 | if (eh != NULL | |
| 11933 | && (eh->elf.plt.plist != NULL | |
| 11934 | || (eh->oh != NULL | |
| 11935 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
| 11936 | { | |
| 11937 | ret = 1; | |
| 11938 | break; | |
| 4c52953f AM |
11939 | } |
| 11940 | ||
| 70cc837d AM |
11941 | if (sym_sec == NULL) |
| 11942 | /* Ignore other undefined symbols. */ | |
| 4c52953f | 11943 | continue; |
| 4c52953f | 11944 | |
| 70cc837d AM |
11945 | /* Assume branches to other sections not included in the |
| 11946 | link need stubs too, to cover -R and absolute syms. */ | |
| 11947 | if (sym_sec->output_section == NULL) | |
| 11948 | { | |
| 11949 | ret = 1; | |
| 11950 | break; | |
| 11951 | } | |
| 4c52953f | 11952 | |
| 70cc837d AM |
11953 | if (h == NULL) |
| 11954 | sym_value = sym->st_value; | |
| 11955 | else | |
| 11956 | { | |
| 11957 | if (h->root.type != bfd_link_hash_defined | |
| 11958 | && h->root.type != bfd_link_hash_defweak) | |
| 11959 | abort (); | |
| 11960 | sym_value = h->root.u.def.value; | |
| 11961 | } | |
| 11962 | sym_value += rel->r_addend; | |
| 4c52953f | 11963 | |
| 70cc837d AM |
11964 | /* If this branch reloc uses an opd sym, find the code section. */ |
| 11965 | opd = get_opd_info (sym_sec); | |
| 11966 | if (opd != NULL) | |
| 11967 | { | |
| 11968 | if (h == NULL && opd->adjust != NULL) | |
| 11969 | { | |
| 11970 | long adjust; | |
| 4c52953f | 11971 | |
| 92a9c616 | 11972 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
| 70cc837d AM |
11973 | if (adjust == -1) |
| 11974 | /* Assume deleted functions won't ever be called. */ | |
| 11975 | continue; | |
| 11976 | sym_value += adjust; | |
| 11977 | } | |
| 4c52953f | 11978 | |
| aef36ac1 AM |
11979 | dest = opd_entry_value (sym_sec, sym_value, |
| 11980 | &sym_sec, NULL, FALSE); | |
| 70cc837d AM |
11981 | if (dest == (bfd_vma) -1) |
| 11982 | continue; | |
| 11983 | } | |
| 11984 | else | |
| 11985 | dest = (sym_value | |
| 11986 | + sym_sec->output_offset | |
| 11987 | + sym_sec->output_section->vma); | |
| 4c52953f | 11988 | |
| 70cc837d AM |
11989 | /* Ignore branch to self. */ |
| 11990 | if (sym_sec == isec) | |
| 11991 | continue; | |
| 4c52953f | 11992 | |
| 70cc837d AM |
11993 | /* If the called function uses the toc, we need a stub. */ |
| 11994 | if (sym_sec->has_toc_reloc | |
| 11995 | || sym_sec->makes_toc_func_call) | |
| 4c52953f | 11996 | { |
| 70cc837d | 11997 | ret = 1; |
| 4c52953f AM |
11998 | break; |
| 11999 | } | |
| 70cc837d AM |
12000 | |
| 12001 | /* Assume any branch that needs a long branch stub might in fact | |
| 12002 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 12003 | else if (dest - (isec->output_offset | |
| 12004 | + isec->output_section->vma | |
| 6911b7dc AM |
12005 | + rel->r_offset) + (1 << 25) |
| 12006 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
| 12007 | ? h->other | |
| 12008 | : sym->st_other)) | |
| 4c52953f | 12009 | { |
| 70cc837d AM |
12010 | ret = 1; |
| 12011 | break; | |
| 12012 | } | |
| 12013 | ||
| 12014 | /* If calling back to a section in the process of being | |
| 12015 | tested, we can't say for sure that no toc adjusting stubs | |
| 12016 | are needed, so don't return zero. */ | |
| 12017 | else if (sym_sec->call_check_in_progress) | |
| 12018 | ret = 2; | |
| 12019 | ||
| 12020 | /* Branches to another section that itself doesn't have any TOC | |
| 12021 | references are OK. Recursively call ourselves to check. */ | |
| 12022 | else if (!sym_sec->call_check_done) | |
| 12023 | { | |
| 12024 | int recur; | |
| 12025 | ||
| 12026 | /* Mark current section as indeterminate, so that other | |
| 12027 | sections that call back to current won't be marked as | |
| 12028 | known. */ | |
| 12029 | isec->call_check_in_progress = 1; | |
| 12030 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 12031 | isec->call_check_in_progress = 0; | |
| 12032 | ||
| 4c52953f AM |
12033 | if (recur != 0) |
| 12034 | { | |
| 70cc837d AM |
12035 | ret = recur; |
| 12036 | if (recur != 2) | |
| 12037 | break; | |
| 4c52953f AM |
12038 | } |
| 12039 | } | |
| 4c52953f | 12040 | } |
| 70cc837d AM |
12041 | |
| 12042 | if (local_syms != NULL | |
| 12043 | && (elf_symtab_hdr (isec->owner).contents | |
| 12044 | != (unsigned char *) local_syms)) | |
| 12045 | free (local_syms); | |
| 12046 | if (elf_section_data (isec)->relocs != relstart) | |
| 12047 | free (relstart); | |
| 9b5ecbd0 AM |
12048 | } |
| 12049 | ||
| 70cc837d AM |
12050 | if ((ret & 1) == 0 |
| 12051 | && isec->map_head.s != NULL | |
| 12052 | && (strcmp (isec->output_section->name, ".init") == 0 | |
| 12053 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
| 12054 | { | |
| 12055 | if (isec->map_head.s->has_toc_reloc | |
| 12056 | || isec->map_head.s->makes_toc_func_call) | |
| 12057 | ret = 1; | |
| 12058 | else if (!isec->map_head.s->call_check_done) | |
| 12059 | { | |
| 12060 | int recur; | |
| 12061 | isec->call_check_in_progress = 1; | |
| 12062 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
| 12063 | isec->call_check_in_progress = 0; | |
| 12064 | if (recur != 0) | |
| 12065 | ret = recur; | |
| 12066 | } | |
| 12067 | } | |
| 12068 | ||
| 12069 | if (ret == 1) | |
| 12070 | isec->makes_toc_func_call = 1; | |
| 4c52953f | 12071 | |
| 9b5ecbd0 AM |
12072 | return ret; |
| 12073 | } | |
| 12074 | ||
| 721956f4 AM |
12075 | /* The linker repeatedly calls this function for each input section, |
| 12076 | in the order that input sections are linked into output sections. | |
| 12077 | Build lists of input sections to determine groupings between which | |
| 12078 | we may insert linker stubs. */ | |
| 12079 | ||
| 9b5ecbd0 | 12080 | bfd_boolean |
| 4ce794b7 | 12081 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
12082 | { |
| 12083 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12084 | ||
| 4dfe6ac6 NC |
12085 | if (htab == NULL) |
| 12086 | return FALSE; | |
| 12087 | ||
| 734b6cf9 | 12088 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 6f20ed8a | 12089 | && isec->output_section->id < htab->sec_info_arr_size) |
| 721956f4 | 12090 | { |
| 3d6f9012 AM |
12091 | /* This happens to make the list in reverse order, |
| 12092 | which is what we want. */ | |
| 6f20ed8a AM |
12093 | htab->sec_info[isec->id].u.list |
| 12094 | = htab->sec_info[isec->output_section->id].u.list; | |
| 12095 | htab->sec_info[isec->output_section->id].u.list = isec; | |
| 721956f4 | 12096 | } |
| ad8e1ba5 | 12097 | |
| 4c52953f | 12098 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 12099 | { |
| 8b974ba3 AM |
12100 | /* Analyse sections that aren't already flagged as needing a |
| 12101 | valid toc pointer. Exclude .fixup for the linux kernel. | |
| 12102 | .fixup contains branches, but only back to the function that | |
| 12103 | hit an exception. */ | |
| 12104 | if (!(isec->has_toc_reloc | |
| 12105 | || (isec->flags & SEC_CODE) == 0 | |
| 12106 | || strcmp (isec->name, ".fixup") == 0 | |
| 12107 | || isec->call_check_done)) | |
| 12108 | { | |
| 12109 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
| 6683a28d | 12110 | return FALSE; |
| 8b974ba3 AM |
12111 | } |
| 12112 | /* Make all sections use the TOC assigned for this object file. | |
| 12113 | This will be wrong for pasted sections; We fix that in | |
| 12114 | check_pasted_section(). */ | |
| 12115 | if (elf_gp (isec->owner) != 0) | |
| 12116 | htab->toc_curr = elf_gp (isec->owner); | |
| 12117 | } | |
| 12118 | ||
| 6f20ed8a | 12119 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
| 9b5ecbd0 | 12120 | return TRUE; |
| 721956f4 AM |
12121 | } |
| 12122 | ||
| 70cc837d AM |
12123 | /* Check that all .init and .fini sections use the same toc, if they |
| 12124 | have toc relocs. */ | |
| 12125 | ||
| 12126 | static bfd_boolean | |
| 12127 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
| 12128 | { | |
| 12129 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
| 12130 | ||
| 12131 | if (o != NULL) | |
| 12132 | { | |
| 12133 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12134 | bfd_vma toc_off = 0; | |
| 12135 | asection *i; | |
| 12136 | ||
| 12137 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 12138 | if (i->has_toc_reloc) | |
| 12139 | { | |
| 12140 | if (toc_off == 0) | |
| 6f20ed8a AM |
12141 | toc_off = htab->sec_info[i->id].toc_off; |
| 12142 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
| 70cc837d AM |
12143 | return FALSE; |
| 12144 | } | |
| 6683a28d AM |
12145 | |
| 12146 | if (toc_off == 0) | |
| 12147 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 12148 | if (i->makes_toc_func_call) | |
| 12149 | { | |
| 6f20ed8a | 12150 | toc_off = htab->sec_info[i->id].toc_off; |
| 6683a28d AM |
12151 | break; |
| 12152 | } | |
| 12153 | ||
| 70cc837d AM |
12154 | /* Make sure the whole pasted function uses the same toc offset. */ |
| 12155 | if (toc_off != 0) | |
| 12156 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 6f20ed8a | 12157 | htab->sec_info[i->id].toc_off = toc_off; |
| 70cc837d AM |
12158 | } |
| 12159 | return TRUE; | |
| 12160 | } | |
| 12161 | ||
| 12162 | bfd_boolean | |
| 12163 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
| 12164 | { | |
| 12165 | return (check_pasted_section (info, ".init") | |
| 12166 | & check_pasted_section (info, ".fini")); | |
| 12167 | } | |
| 12168 | ||
| 721956f4 AM |
12169 | /* See whether we can group stub sections together. Grouping stub |
| 12170 | sections may result in fewer stubs. More importantly, we need to | |
| 12171 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 12172 | .fini output sections respectively, because glibc splits the | |
| 12173 | _init and _fini functions into multiple parts. Putting a stub in | |
| 12174 | the middle of a function is not a good idea. */ | |
| 12175 | ||
| 6f20ed8a AM |
12176 | static bfd_boolean |
| 12177 | group_sections (struct bfd_link_info *info, | |
| 4ce794b7 AM |
12178 | bfd_size_type stub_group_size, |
| 12179 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 12180 | { |
| 6f20ed8a AM |
12181 | struct ppc_link_hash_table *htab; |
| 12182 | asection *osec; | |
| 7c8fe5c4 AM |
12183 | bfd_boolean suppress_size_errors; |
| 12184 | ||
| 6f20ed8a AM |
12185 | htab = ppc_hash_table (info); |
| 12186 | if (htab == NULL) | |
| 12187 | return FALSE; | |
| 12188 | ||
| 7c8fe5c4 | 12189 | suppress_size_errors = FALSE; |
| 7c8fe5c4 AM |
12190 | if (stub_group_size == 1) |
| 12191 | { | |
| 12192 | /* Default values. */ | |
| 12193 | if (stubs_always_before_branch) | |
| 09f92717 | 12194 | stub_group_size = 0x1e00000; |
| 7c8fe5c4 | 12195 | else |
| 09f92717 | 12196 | stub_group_size = 0x1c00000; |
| 7c8fe5c4 AM |
12197 | suppress_size_errors = TRUE; |
| 12198 | } | |
| 12199 | ||
| 6f20ed8a | 12200 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
| 721956f4 | 12201 | { |
| 6f20ed8a AM |
12202 | asection *tail; |
| 12203 | ||
| 12204 | if (osec->id >= htab->sec_info_arr_size) | |
| 12205 | continue; | |
| 12206 | ||
| 12207 | tail = htab->sec_info[osec->id].u.list; | |
| 734b6cf9 | 12208 | while (tail != NULL) |
| 721956f4 | 12209 | { |
| 734b6cf9 AM |
12210 | asection *curr; |
| 12211 | asection *prev; | |
| 12212 | bfd_size_type total; | |
| 12213 | bfd_boolean big_sec; | |
| 12214 | bfd_vma curr_toc; | |
| 6f20ed8a | 12215 | struct map_stub *group; |
| 09f92717 | 12216 | bfd_size_type group_size; |
| 734b6cf9 AM |
12217 | |
| 12218 | curr = tail; | |
| eea6121a | 12219 | total = tail->size; |
| 09f92717 AM |
12220 | group_size = (ppc64_elf_section_data (tail) != NULL |
| 12221 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
| 12222 | ? stub_group_size >> 10 : stub_group_size); | |
| 12223 | ||
| 12224 | big_sec = total > group_size; | |
| 7c8fe5c4 | 12225 | if (big_sec && !suppress_size_errors) |
| 695344c0 | 12226 | /* xgettext:c-format */ |
| 4eca0228 AM |
12227 | _bfd_error_handler (_("%B section %A exceeds stub group size"), |
| 12228 | tail->owner, tail); | |
| 6f20ed8a | 12229 | curr_toc = htab->sec_info[tail->id].toc_off; |
| 734b6cf9 | 12230 | |
| 6f20ed8a | 12231 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
| 734b6cf9 | 12232 | && ((total += curr->output_offset - prev->output_offset) |
| 6bee8834 AM |
12233 | < (ppc64_elf_section_data (prev) != NULL |
| 12234 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 09f92717 | 12235 | ? (group_size = stub_group_size >> 10) : group_size)) |
| 6f20ed8a | 12236 | && htab->sec_info[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
12237 | curr = prev; |
| 12238 | ||
| 12239 | /* OK, the size from the start of CURR to the end is less | |
| 09f92717 | 12240 | than group_size and thus can be handled by one stub |
| 734b6cf9 | 12241 | section. (or the tail section is itself larger than |
| 09f92717 AM |
12242 | group_size, in which case we may be toast.) We should |
| 12243 | really be keeping track of the total size of stubs added | |
| 12244 | here, as stubs contribute to the final output section | |
| 12245 | size. That's a little tricky, and this way will only | |
| 12246 | break if stubs added make the total size more than 2^25, | |
| 12247 | ie. for the default stub_group_size, if stubs total more | |
| 12248 | than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 6f20ed8a AM |
12249 | group = bfd_alloc (curr->owner, sizeof (*group)); |
| 12250 | if (group == NULL) | |
| 12251 | return FALSE; | |
| 12252 | group->link_sec = curr; | |
| 12253 | group->stub_sec = NULL; | |
| a4b6fadd AM |
12254 | group->needs_save_res = 0; |
| 12255 | group->next = htab->group; | |
| 12256 | htab->group = group; | |
| 734b6cf9 | 12257 | do |
| 721956f4 | 12258 | { |
| 6f20ed8a | 12259 | prev = htab->sec_info[tail->id].u.list; |
| 734b6cf9 | 12260 | /* Set up this stub group. */ |
| 6f20ed8a | 12261 | htab->sec_info[tail->id].u.group = group; |
| 721956f4 | 12262 | } |
| 734b6cf9 AM |
12263 | while (tail != curr && (tail = prev) != NULL); |
| 12264 | ||
| 09f92717 | 12265 | /* But wait, there's more! Input sections up to group_size |
| 734b6cf9 AM |
12266 | bytes before the stub section can be handled by it too. |
| 12267 | Don't do this if we have a really large section after the | |
| 12268 | stubs, as adding more stubs increases the chance that | |
| 12269 | branches may not reach into the stub section. */ | |
| 12270 | if (!stubs_always_before_branch && !big_sec) | |
| 12271 | { | |
| 12272 | total = 0; | |
| 12273 | while (prev != NULL | |
| 12274 | && ((total += tail->output_offset - prev->output_offset) | |
| 6bee8834 AM |
12275 | < (ppc64_elf_section_data (prev) != NULL |
| 12276 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 09f92717 | 12277 | ? (group_size = stub_group_size >> 10) : group_size)) |
| 6f20ed8a | 12278 | && htab->sec_info[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
12279 | { |
| 12280 | tail = prev; | |
| 6f20ed8a AM |
12281 | prev = htab->sec_info[tail->id].u.list; |
| 12282 | htab->sec_info[tail->id].u.group = group; | |
| 734b6cf9 AM |
12283 | } |
| 12284 | } | |
| 12285 | tail = prev; | |
| 721956f4 AM |
12286 | } |
| 12287 | } | |
| 6f20ed8a | 12288 | return TRUE; |
| 721956f4 AM |
12289 | } |
| 12290 | ||
| 58d180e8 AM |
12291 | static const unsigned char glink_eh_frame_cie[] = |
| 12292 | { | |
| 12293 | 0, 0, 0, 16, /* length. */ | |
| 12294 | 0, 0, 0, 0, /* id. */ | |
| 12295 | 1, /* CIE version. */ | |
| 12296 | 'z', 'R', 0, /* Augmentation string. */ | |
| 12297 | 4, /* Code alignment. */ | |
| 12298 | 0x78, /* Data alignment. */ | |
| 12299 | 65, /* RA reg. */ | |
| 12300 | 1, /* Augmentation size. */ | |
| 12301 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
| 2e0ce1c8 | 12302 | DW_CFA_def_cfa, 1, 0 /* def_cfa: r1 offset 0. */ |
| 58d180e8 AM |
12303 | }; |
| 12304 | ||
| d969d15f AM |
12305 | /* Stripping output sections is normally done before dynamic section |
| 12306 | symbols have been allocated. This function is called later, and | |
| 12307 | handles cases like htab->brlt which is mapped to its own output | |
| 12308 | section. */ | |
| 12309 | ||
| 12310 | static void | |
| 12311 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
| 12312 | { | |
| 12313 | if (isec->size == 0 | |
| 12314 | && isec->output_section->size == 0 | |
| 53d8967a | 12315 | && !(isec->output_section->flags & SEC_KEEP) |
| d969d15f AM |
12316 | && !bfd_section_removed_from_list (info->output_bfd, |
| 12317 | isec->output_section) | |
| 12318 | && elf_section_data (isec->output_section)->dynindx == 0) | |
| 12319 | { | |
| 12320 | isec->output_section->flags |= SEC_EXCLUDE; | |
| 12321 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
| 12322 | info->output_bfd->section_count--; | |
| 12323 | } | |
| 12324 | } | |
| 12325 | ||
| 721956f4 AM |
12326 | /* Determine and set the size of the stub section for a final link. |
| 12327 | ||
| 12328 | The basic idea here is to examine all the relocations looking for | |
| 12329 | PC-relative calls to a target that is unreachable with a "bl" | |
| 12330 | instruction. */ | |
| 12331 | ||
| b34976b6 | 12332 | bfd_boolean |
| e7d1c40c | 12333 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
| 721956f4 AM |
12334 | { |
| 12335 | bfd_size_type stub_group_size; | |
| b34976b6 | 12336 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
12337 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 12338 | ||
| 4dfe6ac6 NC |
12339 | if (htab == NULL) |
| 12340 | return FALSE; | |
| 12341 | ||
| 0e1862bb | 12342 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
| e7d1c40c | 12343 | htab->params->plt_thread_safe = 1; |
| b9e5796b | 12344 | if (!htab->opd_abi) |
| e7d1c40c AM |
12345 | htab->params->plt_thread_safe = 0; |
| 12346 | else if (htab->params->plt_thread_safe == -1) | |
| 794e51c0 | 12347 | { |
| e2458743 | 12348 | static const char *const thread_starter[] = |
| 794e51c0 AM |
12349 | { |
| 12350 | "pthread_create", | |
| 12351 | /* libstdc++ */ | |
| 12352 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
| 12353 | /* librt */ | |
| 12354 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
| 12355 | "mq_notify", "create_timer", | |
| 12356 | /* libanl */ | |
| 12357 | "getaddrinfo_a", | |
| 12358 | /* libgomp */ | |
| 2300b5a1 | 12359 | "GOMP_parallel", |
| 794e51c0 | 12360 | "GOMP_parallel_start", |
| 2300b5a1 | 12361 | "GOMP_parallel_loop_static", |
| 794e51c0 | 12362 | "GOMP_parallel_loop_static_start", |
| 2300b5a1 | 12363 | "GOMP_parallel_loop_dynamic", |
| 794e51c0 | 12364 | "GOMP_parallel_loop_dynamic_start", |
| 2300b5a1 | 12365 | "GOMP_parallel_loop_guided", |
| 794e51c0 | 12366 | "GOMP_parallel_loop_guided_start", |
| 2300b5a1 | 12367 | "GOMP_parallel_loop_runtime", |
| 794e51c0 | 12368 | "GOMP_parallel_loop_runtime_start", |
| 2300b5a1 | 12369 | "GOMP_parallel_sections", |
| 68ffbac6 | 12370 | "GOMP_parallel_sections_start", |
| f9dffbf0 AM |
12371 | /* libgo */ |
| 12372 | "__go_go", | |
| 794e51c0 AM |
12373 | }; |
| 12374 | unsigned i; | |
| 12375 | ||
| a4b6fadd | 12376 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
| 794e51c0 AM |
12377 | { |
| 12378 | struct elf_link_hash_entry *h; | |
| 12379 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
| 12380 | FALSE, FALSE, TRUE); | |
| e7d1c40c AM |
12381 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
| 12382 | if (htab->params->plt_thread_safe) | |
| 794e51c0 AM |
12383 | break; |
| 12384 | } | |
| 12385 | } | |
| e7d1c40c AM |
12386 | stubs_always_before_branch = htab->params->group_size < 0; |
| 12387 | if (htab->params->group_size < 0) | |
| 12388 | stub_group_size = -htab->params->group_size; | |
| 721956f4 | 12389 | else |
| e7d1c40c | 12390 | stub_group_size = htab->params->group_size; |
| 721956f4 | 12391 | |
| 6f20ed8a AM |
12392 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
| 12393 | return FALSE; | |
| 721956f4 | 12394 | |
| c9301e31 AM |
12395 | #define STUB_SHRINK_ITER 20 |
| 12396 | /* Loop until no stubs added. After iteration 20 of this loop we may | |
| 12397 | exit on a stub section shrinking. This is to break out of a | |
| 12398 | pathological case where adding stubs on one iteration decreases | |
| 12399 | section gaps (perhaps due to alignment), which then requires | |
| 12400 | fewer or smaller stubs on the next iteration. */ | |
| 12401 | ||
| 721956f4 AM |
12402 | while (1) |
| 12403 | { | |
| 12404 | bfd *input_bfd; | |
| 12405 | unsigned int bfd_indx; | |
| a4b6fadd | 12406 | struct map_stub *group; |
| 721956f4 | 12407 | asection *stub_sec; |
| 721956f4 AM |
12408 | |
| 12409 | htab->stub_iteration += 1; | |
| 721956f4 AM |
12410 | |
| 12411 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 12412 | input_bfd != NULL; | |
| c72f2fb2 | 12413 | input_bfd = input_bfd->link.next, bfd_indx++) |
| 721956f4 AM |
12414 | { |
| 12415 | Elf_Internal_Shdr *symtab_hdr; | |
| 12416 | asection *section; | |
| 6cdc0ccc | 12417 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 12418 | |
| 0c8d6e5c | 12419 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
12420 | continue; |
| 12421 | ||
| 721956f4 | 12422 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 12423 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
12424 | if (symtab_hdr->sh_info == 0) |
| 12425 | continue; | |
| 12426 | ||
| 721956f4 AM |
12427 | /* Walk over each section attached to the input bfd. */ |
| 12428 | for (section = input_bfd->sections; | |
| 12429 | section != NULL; | |
| 12430 | section = section->next) | |
| 12431 | { | |
| 721956f4 | 12432 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
12433 | |
| 12434 | /* If there aren't any relocs, then there's nothing more | |
| 12435 | to do. */ | |
| 12436 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
12437 | || (section->flags & SEC_ALLOC) == 0 |
| 12438 | || (section->flags & SEC_LOAD) == 0 | |
| 12439 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
12440 | || section->reloc_count == 0) |
| 12441 | continue; | |
| 12442 | ||
| 12443 | /* If this section is a link-once section that will be | |
| 12444 | discarded, then don't create any stubs. */ | |
| 12445 | if (section->output_section == NULL | |
| 927be08e | 12446 | || section->output_section->owner != info->output_bfd) |
| 721956f4 AM |
12447 | continue; |
| 12448 | ||
| 1e2f5b6e AM |
12449 | /* Get the relocs. */ |
| 12450 | internal_relocs | |
| 4ce794b7 | 12451 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 12452 | info->keep_memory); |
| 721956f4 | 12453 | if (internal_relocs == NULL) |
| 1e2f5b6e | 12454 | goto error_ret_free_local; |
| 721956f4 AM |
12455 | |
| 12456 | /* Now examine each relocation. */ | |
| 12457 | irela = internal_relocs; | |
| 12458 | irelaend = irela + section->reloc_count; | |
| 12459 | for (; irela < irelaend; irela++) | |
| 12460 | { | |
| 4ce794b7 AM |
12461 | enum elf_ppc64_reloc_type r_type; |
| 12462 | unsigned int r_indx; | |
| 721956f4 AM |
12463 | enum ppc_stub_type stub_type; |
| 12464 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 12465 | asection *sym_sec, *code_sec; |
| e054468f | 12466 | bfd_vma sym_value, code_value; |
| 721956f4 | 12467 | bfd_vma destination; |
| 6911b7dc | 12468 | unsigned long local_off; |
| 8843416a | 12469 | bfd_boolean ok_dest; |
| 721956f4 | 12470 | struct ppc_link_hash_entry *hash; |
| 8387904d | 12471 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
12472 | struct elf_link_hash_entry *h; |
| 12473 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
12474 | char *stub_name; |
| 12475 | const asection *id_sec; | |
| 74f0fb50 | 12476 | struct _opd_sec_data *opd; |
| e054468f | 12477 | struct plt_entry *plt_ent; |
| 721956f4 AM |
12478 | |
| 12479 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 12480 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 12481 | ||
| 4ce794b7 | 12482 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
12483 | { |
| 12484 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 12485 | goto error_ret_free_internal; |
| 721956f4 AM |
12486 | } |
| 12487 | ||
| 12488 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
12489 | if (r_type != R_PPC64_REL24 |
| 12490 | && r_type != R_PPC64_REL14 | |
| 12491 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 12492 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
12493 | continue; |
| 12494 | ||
| 12495 | /* Now determine the call target, its name, value, | |
| 12496 | section. */ | |
| 411e1bfb AM |
12497 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 12498 | r_indx, input_bfd)) | |
| 12499 | goto error_ret_free_internal; | |
| 12500 | hash = (struct ppc_link_hash_entry *) h; | |
| 12501 | ||
| 8843416a | 12502 | ok_dest = FALSE; |
| 8387904d | 12503 | fdh = NULL; |
| 7fe2b9a6 | 12504 | sym_value = 0; |
| 411e1bfb | 12505 | if (hash == NULL) |
| 721956f4 | 12506 | { |
| 411e1bfb | 12507 | sym_value = sym->st_value; |
| c27b8c2a AM |
12508 | if (sym_sec != NULL |
| 12509 | && sym_sec->output_section != NULL) | |
| 12510 | ok_dest = TRUE; | |
| 721956f4 | 12511 | } |
| 7fe2b9a6 AM |
12512 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 12513 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 12514 | { | |
| 12515 | sym_value = hash->elf.root.u.def.value; | |
| 12516 | if (sym_sec->output_section != NULL) | |
| 12517 | ok_dest = TRUE; | |
| 12518 | } | |
| 12519 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 12520 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 12521 | { |
| 99877b66 | 12522 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
12523 | use the func descriptor sym instead if it is |
| 12524 | defined. */ | |
| ceb1f1ef | 12525 | if (hash->elf.root.root.string[0] == '.' |
| 8c5b4e52 | 12526 | && hash->oh != NULL) |
| 8387904d | 12527 | { |
| 8c5b4e52 | 12528 | fdh = ppc_follow_link (hash->oh); |
| 8387904d AM |
12529 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 12530 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 12531 | { | |
| 12532 | sym_sec = fdh->elf.root.u.def.section; | |
| 12533 | sym_value = fdh->elf.root.u.def.value; | |
| 12534 | if (sym_sec->output_section != NULL) | |
| 12535 | ok_dest = TRUE; | |
| 12536 | } | |
| 99877b66 AM |
12537 | else |
| 12538 | fdh = NULL; | |
| 8387904d | 12539 | } |
| 7fe2b9a6 AM |
12540 | } |
| 12541 | else | |
| 12542 | { | |
| 12543 | bfd_set_error (bfd_error_bad_value); | |
| 12544 | goto error_ret_free_internal; | |
| 721956f4 AM |
12545 | } |
| 12546 | ||
| 8843416a | 12547 | destination = 0; |
| 6911b7dc | 12548 | local_off = 0; |
| 8843416a AM |
12549 | if (ok_dest) |
| 12550 | { | |
| 12551 | sym_value += irela->r_addend; | |
| 12552 | destination = (sym_value | |
| 12553 | + sym_sec->output_offset | |
| 12554 | + sym_sec->output_section->vma); | |
| 6911b7dc AM |
12555 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
| 12556 | ? hash->elf.other | |
| 12557 | : sym->st_other); | |
| 8843416a AM |
12558 | } |
| 12559 | ||
| 8387904d | 12560 | code_sec = sym_sec; |
| e054468f | 12561 | code_value = sym_value; |
| 74f0fb50 AM |
12562 | opd = get_opd_info (sym_sec); |
| 12563 | if (opd != NULL) | |
| 8387904d AM |
12564 | { |
| 12565 | bfd_vma dest; | |
| 12566 | ||
| 74f0fb50 | 12567 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 12568 | { |
| 51aecdc5 | 12569 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
| 8387904d AM |
12570 | if (adjust == -1) |
| 12571 | continue; | |
| e054468f | 12572 | code_value += adjust; |
| 8387904d AM |
12573 | sym_value += adjust; |
| 12574 | } | |
| 12575 | dest = opd_entry_value (sym_sec, sym_value, | |
| aef36ac1 | 12576 | &code_sec, &code_value, FALSE); |
| 8387904d AM |
12577 | if (dest != (bfd_vma) -1) |
| 12578 | { | |
| 12579 | destination = dest; | |
| 12580 | if (fdh != NULL) | |
| 12581 | { | |
| 12582 | /* Fixup old ABI sym to point at code | |
| 12583 | entry. */ | |
| 99877b66 | 12584 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 12585 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 12586 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
12587 | } |
| 12588 | } | |
| 12589 | } | |
| 12590 | ||
| 721956f4 | 12591 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 12592 | plt_ent = NULL; |
| 721956f4 | 12593 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| 6911b7dc AM |
12594 | &plt_ent, destination, |
| 12595 | local_off); | |
| ad8e1ba5 AM |
12596 | |
| 12597 | if (stub_type != ppc_stub_plt_call) | |
| 12598 | { | |
| 12599 | /* Check whether we need a TOC adjusting stub. | |
| 12600 | Since the linker pastes together pieces from | |
| 12601 | different object files when creating the | |
| 12602 | _init and _fini functions, it may be that a | |
| 12603 | call to what looks like a local sym is in | |
| 12604 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
12605 | if (code_sec != NULL |
| 12606 | && code_sec->output_section != NULL | |
| 6f20ed8a AM |
12607 | && (htab->sec_info[code_sec->id].toc_off |
| 12608 | != htab->sec_info[section->id].toc_off) | |
| 4c52953f AM |
12609 | && (code_sec->has_toc_reloc |
| 12610 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
12611 | stub_type = ppc_stub_long_branch_r2off; |
| 12612 | } | |
| 12613 | ||
| 721956f4 AM |
12614 | if (stub_type == ppc_stub_none) |
| 12615 | continue; | |
| 12616 | ||
| 411e1bfb AM |
12617 | /* __tls_get_addr calls might be eliminated. */ |
| 12618 | if (stub_type != ppc_stub_plt_call | |
| 12619 | && hash != NULL | |
| 8387904d AM |
12620 | && (hash == htab->tls_get_addr |
| 12621 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
12622 | && section->has_tls_reloc |
| 12623 | && irela != internal_relocs) | |
| 12624 | { | |
| 12625 | /* Get tls info. */ | |
| f961d9dd | 12626 | unsigned char *tls_mask; |
| 411e1bfb | 12627 | |
| 3a71aa26 | 12628 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
12629 | irela - 1, input_bfd)) |
| 12630 | goto error_ret_free_internal; | |
| e7b938ca | 12631 | if (*tls_mask != 0) |
| 411e1bfb AM |
12632 | continue; |
| 12633 | } | |
| 12634 | ||
| f378ab09 | 12635 | if (stub_type == ppc_stub_plt_call) |
| 794e51c0 | 12636 | { |
| 6e1816be AM |
12637 | if (!htab->opd_abi |
| 12638 | && htab->params->plt_localentry0 != 0 | |
| 12639 | && is_elfv2_localentry0 (&hash->elf)) | |
| 12640 | htab->has_plt_localentry0 = 1; | |
| 12641 | else if (irela + 1 < irelaend | |
| 12642 | && irela[1].r_offset == irela->r_offset + 4 | |
| 12643 | && (ELF64_R_TYPE (irela[1].r_info) | |
| 12644 | == R_PPC64_TOCSAVE)) | |
| f378ab09 AM |
12645 | { |
| 12646 | if (!tocsave_find (htab, INSERT, | |
| 12647 | &local_syms, irela + 1, input_bfd)) | |
| 12648 | goto error_ret_free_internal; | |
| 12649 | } | |
| f378ab09 AM |
12650 | else |
| 12651 | stub_type = ppc_stub_plt_call_r2save; | |
| 794e51c0 | 12652 | } |
| 3b421ab3 | 12653 | |
| 721956f4 | 12654 | /* Support for grouping stub sections. */ |
| 6f20ed8a | 12655 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
| 721956f4 AM |
12656 | |
| 12657 | /* Get the name of this stub. */ | |
| 12658 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 12659 | if (!stub_name) | |
| 12660 | goto error_ret_free_internal; | |
| 12661 | ||
| 12662 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 12663 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
12664 | if (stub_entry != NULL) |
| 12665 | { | |
| 12666 | /* The proper stub has already been created. */ | |
| 12667 | free (stub_name); | |
| 794e51c0 AM |
12668 | if (stub_type == ppc_stub_plt_call_r2save) |
| 12669 | stub_entry->stub_type = stub_type; | |
| 721956f4 AM |
12670 | continue; |
| 12671 | } | |
| 12672 | ||
| 25f53a85 | 12673 | stub_entry = ppc_add_stub (stub_name, section, info); |
| 721956f4 AM |
12674 | if (stub_entry == NULL) |
| 12675 | { | |
| 12676 | free (stub_name); | |
| 6cdc0ccc AM |
12677 | error_ret_free_internal: |
| 12678 | if (elf_section_data (section)->relocs == NULL) | |
| 12679 | free (internal_relocs); | |
| 12680 | error_ret_free_local: | |
| 12681 | if (local_syms != NULL | |
| 12682 | && (symtab_hdr->contents | |
| 12683 | != (unsigned char *) local_syms)) | |
| 12684 | free (local_syms); | |
| b34976b6 | 12685 | return FALSE; |
| 721956f4 AM |
12686 | } |
| 12687 | ||
| ad8e1ba5 | 12688 | stub_entry->stub_type = stub_type; |
| 794e51c0 AM |
12689 | if (stub_type != ppc_stub_plt_call |
| 12690 | && stub_type != ppc_stub_plt_call_r2save) | |
| e054468f AM |
12691 | { |
| 12692 | stub_entry->target_value = code_value; | |
| 12693 | stub_entry->target_section = code_sec; | |
| 12694 | } | |
| 12695 | else | |
| 12696 | { | |
| 12697 | stub_entry->target_value = sym_value; | |
| 12698 | stub_entry->target_section = sym_sec; | |
| 12699 | } | |
| 721956f4 | 12700 | stub_entry->h = hash; |
| e054468f | 12701 | stub_entry->plt_ent = plt_ent; |
| 6911b7dc | 12702 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
| ee75fd95 AM |
12703 | |
| 12704 | if (stub_entry->h != NULL) | |
| 12705 | htab->stub_globals += 1; | |
| 721956f4 AM |
12706 | } |
| 12707 | ||
| 12708 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 12709 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 12710 | free (internal_relocs); |
| 721956f4 | 12711 | } |
| 6cdc0ccc AM |
12712 | |
| 12713 | if (local_syms != NULL | |
| 12714 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 12715 | { | |
| 12716 | if (!info->keep_memory) | |
| 12717 | free (local_syms); | |
| 12718 | else | |
| 12719 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 12720 | } | |
| 721956f4 AM |
12721 | } |
| 12722 | ||
| 5c3dead3 | 12723 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 | 12724 | stub sections. */ |
| e7d1c40c | 12725 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12726 | stub_sec != NULL; |
| 12727 | stub_sec = stub_sec->next) | |
| e717da7e | 12728 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 12729 | { |
| ea3d7d1c AM |
12730 | if (htab->stub_iteration <= STUB_SHRINK_ITER |
| 12731 | || stub_sec->rawsize < stub_sec->size) | |
| 12732 | /* Past STUB_SHRINK_ITER, rawsize is the max size seen. */ | |
| 12733 | stub_sec->rawsize = stub_sec->size; | |
| ee75fd95 AM |
12734 | stub_sec->size = 0; |
| 12735 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 12736 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 12737 | } |
| eea6121a AM |
12738 | |
| 12739 | htab->brlt->size = 0; | |
| 84f5d08e AM |
12740 | htab->brlt->reloc_count = 0; |
| 12741 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 12742 | if (htab->relbrlt != NULL) |
| eea6121a | 12743 | htab->relbrlt->size = 0; |
| 721956f4 | 12744 | |
| 63bc6f6c | 12745 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 12746 | |
| a4b6fadd AM |
12747 | for (group = htab->group; group != NULL; group = group->next) |
| 12748 | if (group->needs_save_res) | |
| 12749 | group->stub_sec->size += htab->sfpr->size; | |
| 12750 | ||
| 176a0d42 AM |
12751 | if (info->emitrelocations |
| 12752 | && htab->glink != NULL && htab->glink->size != 0) | |
| 12753 | { | |
| 12754 | htab->glink->reloc_count = 1; | |
| 12755 | htab->glink->flags |= SEC_RELOC; | |
| 12756 | } | |
| 12757 | ||
| 58d180e8 AM |
12758 | if (htab->glink_eh_frame != NULL |
| 12759 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
| 9a2a56cc | 12760 | && htab->glink_eh_frame->output_section->size != 0) |
| 58d180e8 | 12761 | { |
| 2e0ce1c8 | 12762 | size_t size = 0, align = 4; |
| 58d180e8 | 12763 | |
| e7d1c40c | 12764 | for (stub_sec = htab->params->stub_bfd->sections; |
| 58d180e8 AM |
12765 | stub_sec != NULL; |
| 12766 | stub_sec = stub_sec->next) | |
| 12767 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 2e0ce1c8 | 12768 | size += (17 + align - 1) & -align; |
| 58d180e8 | 12769 | if (htab->glink != NULL && htab->glink->size != 0) |
| 2e0ce1c8 | 12770 | size += (24 + align - 1) & -align; |
| 58d180e8 | 12771 | if (size != 0) |
| 2e0ce1c8 AM |
12772 | size += (sizeof (glink_eh_frame_cie) + align - 1) & -align; |
| 12773 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; | |
| 12774 | size = (size + align - 1) & -align; | |
| 58d180e8 AM |
12775 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
| 12776 | htab->glink_eh_frame->size = size; | |
| 12777 | } | |
| 12778 | ||
| e7d1c40c AM |
12779 | if (htab->params->plt_stub_align != 0) |
| 12780 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
12781 | stub_sec != NULL; |
| 12782 | stub_sec = stub_sec->next) | |
| 12783 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
12784 | stub_sec->size = ((stub_sec->size |
| 12785 | + (1 << htab->params->plt_stub_align) - 1) | |
| 29f628db | 12786 | & -(1 << htab->params->plt_stub_align)); |
| 794e51c0 | 12787 | |
| e7d1c40c | 12788 | for (stub_sec = htab->params->stub_bfd->sections; |
| 5c3dead3 AM |
12789 | stub_sec != NULL; |
| 12790 | stub_sec = stub_sec->next) | |
| 12791 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| c9301e31 AM |
12792 | && stub_sec->rawsize != stub_sec->size |
| 12793 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
| 12794 | || stub_sec->rawsize < stub_sec->size)) | |
| 5c3dead3 AM |
12795 | break; |
| 12796 | ||
| 58d180e8 AM |
12797 | if (stub_sec == NULL |
| 12798 | && (htab->glink_eh_frame == NULL | |
| 12799 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
| 5c3dead3 AM |
12800 | break; |
| 12801 | ||
| 721956f4 | 12802 | /* Ask the linker to do its stuff. */ |
| e7d1c40c | 12803 | (*htab->params->layout_sections_again) (); |
| 721956f4 AM |
12804 | } |
| 12805 | ||
| da44f4e5 AM |
12806 | if (htab->glink_eh_frame != NULL |
| 12807 | && htab->glink_eh_frame->size != 0) | |
| 12808 | { | |
| 12809 | bfd_vma val; | |
| 12810 | bfd_byte *p, *last_fde; | |
| 12811 | size_t last_fde_len, size, align, pad; | |
| 12812 | asection *stub_sec; | |
| 12813 | ||
| 12814 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
| 12815 | if (p == NULL) | |
| 12816 | return FALSE; | |
| 12817 | htab->glink_eh_frame->contents = p; | |
| 12818 | last_fde = p; | |
| 2e0ce1c8 | 12819 | align = 4; |
| da44f4e5 AM |
12820 | |
| 12821 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
| 12822 | /* CIE length (rewrite in case little-endian). */ | |
| 2e0ce1c8 | 12823 | last_fde_len = ((sizeof (glink_eh_frame_cie) + align - 1) & -align) - 4; |
| da44f4e5 | 12824 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
| 2e0ce1c8 | 12825 | p += last_fde_len + 4; |
| da44f4e5 AM |
12826 | |
| 12827 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 12828 | stub_sec != NULL; | |
| 12829 | stub_sec = stub_sec->next) | |
| 12830 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12831 | { | |
| 12832 | last_fde = p; | |
| 2e0ce1c8 | 12833 | last_fde_len = ((17 + align - 1) & -align) - 4; |
| da44f4e5 | 12834 | /* FDE length. */ |
| 2e0ce1c8 | 12835 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
| da44f4e5 AM |
12836 | p += 4; |
| 12837 | /* CIE pointer. */ | |
| 12838 | val = p - htab->glink_eh_frame->contents; | |
| 12839 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12840 | p += 4; | |
| 12841 | /* Offset to stub section, written later. */ | |
| 12842 | p += 4; | |
| 12843 | /* stub section size. */ | |
| 12844 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
| 12845 | p += 4; | |
| 12846 | /* Augmentation. */ | |
| 12847 | p += 1; | |
| 12848 | /* Pad. */ | |
| 2e0ce1c8 | 12849 | p += ((17 + align - 1) & -align) - 17; |
| da44f4e5 AM |
12850 | } |
| 12851 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12852 | { | |
| 12853 | last_fde = p; | |
| 2e0ce1c8 | 12854 | last_fde_len = ((24 + align - 1) & -align) - 4; |
| da44f4e5 | 12855 | /* FDE length. */ |
| 2e0ce1c8 | 12856 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); |
| da44f4e5 AM |
12857 | p += 4; |
| 12858 | /* CIE pointer. */ | |
| 12859 | val = p - htab->glink_eh_frame->contents; | |
| 12860 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12861 | p += 4; | |
| 12862 | /* Offset to .glink, written later. */ | |
| 12863 | p += 4; | |
| 12864 | /* .glink size. */ | |
| 12865 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
| 12866 | p += 4; | |
| 12867 | /* Augmentation. */ | |
| 12868 | p += 1; | |
| 12869 | ||
| 12870 | *p++ = DW_CFA_advance_loc + 1; | |
| 12871 | *p++ = DW_CFA_register; | |
| 12872 | *p++ = 65; | |
| 9f08fa5c | 12873 | *p++ = htab->opd_abi ? 12 : 0; |
| da44f4e5 AM |
12874 | *p++ = DW_CFA_advance_loc + 4; |
| 12875 | *p++ = DW_CFA_restore_extended; | |
| 12876 | *p++ = 65; | |
| 2e0ce1c8 | 12877 | p += ((24 + align - 1) & -align) - 24; |
| da44f4e5 AM |
12878 | } |
| 12879 | /* Subsume any padding into the last FDE if user .eh_frame | |
| 12880 | sections are aligned more than glink_eh_frame. Otherwise any | |
| 12881 | zero padding will be seen as a terminator. */ | |
| 2e0ce1c8 | 12882 | align = 1ul << htab->glink_eh_frame->output_section->alignment_power; |
| da44f4e5 | 12883 | size = p - htab->glink_eh_frame->contents; |
| 2e0ce1c8 | 12884 | pad = ((size + align - 1) & -align) - size; |
| da44f4e5 AM |
12885 | htab->glink_eh_frame->size = size + pad; |
| 12886 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
| 12887 | } | |
| 12888 | ||
| d969d15f AM |
12889 | maybe_strip_output (info, htab->brlt); |
| 12890 | if (htab->glink_eh_frame != NULL) | |
| 12891 | maybe_strip_output (info, htab->glink_eh_frame); | |
| 721956f4 | 12892 | |
| b34976b6 | 12893 | return TRUE; |
| 721956f4 AM |
12894 | } |
| 12895 | ||
| 12896 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 12897 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 12898 | |
| 805fc799 | 12899 | bfd_vma |
| 1c865ab2 | 12900 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
| 721956f4 | 12901 | { |
| 805fc799 | 12902 | asection *s; |
| a27e685f | 12903 | bfd_vma TOCstart, adjust; |
| 721956f4 | 12904 | |
| 43417696 AM |
12905 | if (info != NULL) |
| 12906 | { | |
| 12907 | struct elf_link_hash_entry *h; | |
| 12908 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
| 12909 | ||
| 12910 | if (is_elf_hash_table (htab) | |
| 12911 | && htab->hgot != NULL) | |
| 12912 | h = htab->hgot; | |
| 12913 | else | |
| 12914 | { | |
| 12915 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
| 12916 | if (is_elf_hash_table (htab)) | |
| 12917 | htab->hgot = h; | |
| 12918 | } | |
| 12919 | if (h != NULL | |
| 12920 | && h->root.type == bfd_link_hash_defined | |
| 12921 | && !h->root.linker_def | |
| 12922 | && (!is_elf_hash_table (htab) | |
| 12923 | || h->def_regular)) | |
| 12924 | { | |
| 12925 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
| 12926 | + h->root.u.def.section->output_offset | |
| 12927 | + h->root.u.def.section->output_section->vma); | |
| 12928 | _bfd_set_gp_value (obfd, TOCstart); | |
| 12929 | return TOCstart; | |
| 12930 | } | |
| 12931 | } | |
| 12932 | ||
| 805fc799 AM |
12933 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 12934 | order. The TOC starts where the first of these sections starts. */ | |
| 12935 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 12936 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12937 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 12938 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12939 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 12940 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12941 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 12942 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
12943 | { |
| 12944 | /* This may happen for | |
| 12945 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 12946 | .toc directive | |
| 12947 | o bad linker script | |
| 12948 | o --gc-sections and empty TOC sections | |
| 12949 | ||
| 12950 | FIXME: Warn user? */ | |
| 12951 | ||
| 12952 | /* Look for a likely section. We probably won't even be | |
| 12953 | using TOCstart. */ | |
| 12954 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
12955 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 12956 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
12957 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12958 | break; | |
| 721956f4 | 12959 | if (s == NULL) |
| 805fc799 | 12960 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12961 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
12962 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12963 | break; | |
| 721956f4 | 12964 | if (s == NULL) |
| 805fc799 | 12965 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
12966 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 12967 | == SEC_ALLOC) | |
| 805fc799 | 12968 | break; |
| 721956f4 | 12969 | if (s == NULL) |
| 805fc799 | 12970 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12971 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
12972 | break; |
| 12973 | } | |
| 721956f4 | 12974 | |
| 805fc799 AM |
12975 | TOCstart = 0; |
| 12976 | if (s != NULL) | |
| 12977 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 12978 | |
| a27e685f AM |
12979 | /* Force alignment. */ |
| 12980 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
| 12981 | TOCstart -= adjust; | |
| 1c865ab2 AM |
12982 | _bfd_set_gp_value (obfd, TOCstart); |
| 12983 | ||
| 810d4e75 | 12984 | if (info != NULL && s != NULL) |
| 1c865ab2 AM |
12985 | { |
| 12986 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12987 | ||
| 810d4e75 AM |
12988 | if (htab != NULL) |
| 12989 | { | |
| 12990 | if (htab->elf.hgot != NULL) | |
| 12991 | { | |
| a27e685f | 12992 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
| 810d4e75 AM |
12993 | htab->elf.hgot->root.u.def.section = s; |
| 12994 | } | |
| 12995 | } | |
| 12996 | else | |
| 1c865ab2 | 12997 | { |
| 810d4e75 AM |
12998 | struct bfd_link_hash_entry *bh = NULL; |
| 12999 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
| a27e685f AM |
13000 | s, TOC_BASE_OFF - adjust, |
| 13001 | NULL, FALSE, FALSE, &bh); | |
| 1c865ab2 AM |
13002 | } |
| 13003 | } | |
| 805fc799 | 13004 | return TOCstart; |
| 721956f4 AM |
13005 | } |
| 13006 | ||
| a345bc8d AM |
13007 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
| 13008 | write out any global entry stubs. */ | |
| 13009 | ||
| 13010 | static bfd_boolean | |
| 13011 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
| 13012 | { | |
| 13013 | struct bfd_link_info *info; | |
| 13014 | struct ppc_link_hash_table *htab; | |
| 13015 | struct plt_entry *pent; | |
| 13016 | asection *s; | |
| 13017 | ||
| 13018 | if (h->root.type == bfd_link_hash_indirect) | |
| 13019 | return TRUE; | |
| 13020 | ||
| 13021 | if (!h->pointer_equality_needed) | |
| 13022 | return TRUE; | |
| 13023 | ||
| 13024 | if (h->def_regular) | |
| 13025 | return TRUE; | |
| 13026 | ||
| 13027 | info = inf; | |
| 13028 | htab = ppc_hash_table (info); | |
| 13029 | if (htab == NULL) | |
| 13030 | return FALSE; | |
| 13031 | ||
| 13032 | s = htab->glink; | |
| 13033 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 13034 | if (pent->plt.offset != (bfd_vma) -1 | |
| 13035 | && pent->addend == 0) | |
| 13036 | { | |
| 13037 | bfd_byte *p; | |
| 13038 | asection *plt; | |
| 13039 | bfd_vma off; | |
| 13040 | ||
| a345bc8d | 13041 | p = s->contents + h->root.u.def.value; |
| 33e44f2e | 13042 | plt = htab->elf.splt; |
| a345bc8d AM |
13043 | if (!htab->elf.dynamic_sections_created |
| 13044 | || h->dynindx == -1) | |
| 33e44f2e | 13045 | plt = htab->elf.iplt; |
| a345bc8d AM |
13046 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
| 13047 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
| 13048 | ||
| 13049 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
| 13050 | { | |
| 13051 | info->callbacks->einfo | |
| 13052 | (_("%P: linkage table error against `%T'\n"), | |
| 13053 | h->root.root.string); | |
| 13054 | bfd_set_error (bfd_error_bad_value); | |
| 13055 | htab->stub_error = TRUE; | |
| 13056 | } | |
| 13057 | ||
| 7341d5e2 AM |
13058 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
| 13059 | if (htab->params->emit_stub_syms) | |
| 13060 | { | |
| 13061 | size_t len = strlen (h->root.root.string); | |
| 13062 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
| 13063 | ||
| 13064 | if (name == NULL) | |
| 13065 | return FALSE; | |
| 13066 | ||
| 13067 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
| 13068 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 13069 | if (h == NULL) | |
| 13070 | return FALSE; | |
| 13071 | if (h->root.type == bfd_link_hash_new) | |
| 13072 | { | |
| 13073 | h->root.type = bfd_link_hash_defined; | |
| 13074 | h->root.u.def.section = s; | |
| 13075 | h->root.u.def.value = p - s->contents; | |
| 13076 | h->ref_regular = 1; | |
| 13077 | h->def_regular = 1; | |
| 13078 | h->ref_regular_nonweak = 1; | |
| 13079 | h->forced_local = 1; | |
| 13080 | h->non_elf = 0; | |
| 2ec55de3 | 13081 | h->root.linker_def = 1; |
| 7341d5e2 AM |
13082 | } |
| 13083 | } | |
| 13084 | ||
| a345bc8d AM |
13085 | if (PPC_HA (off) != 0) |
| 13086 | { | |
| 13087 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
| 13088 | p += 4; | |
| 13089 | } | |
| 13090 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
| 13091 | p += 4; | |
| 13092 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
| 13093 | p += 4; | |
| 13094 | bfd_put_32 (s->owner, BCTR, p); | |
| 13095 | break; | |
| 13096 | } | |
| 13097 | return TRUE; | |
| 13098 | } | |
| 13099 | ||
| 721956f4 AM |
13100 | /* Build all the stubs associated with the current output file. |
| 13101 | The stubs are kept in a hash table attached to the main linker | |
| 13102 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 13103 | ||
| b34976b6 | 13104 | bfd_boolean |
| e7d1c40c | 13105 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
| 4ce794b7 | 13106 | char **stats) |
| 5d1634d7 AM |
13107 | { |
| 13108 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| a4b6fadd | 13109 | struct map_stub *group; |
| 721956f4 | 13110 | asection *stub_sec; |
| 5d1634d7 | 13111 | bfd_byte *p; |
| e717da7e | 13112 | int stub_sec_count = 0; |
| 5d1634d7 | 13113 | |
| 4dfe6ac6 NC |
13114 | if (htab == NULL) |
| 13115 | return FALSE; | |
| 13116 | ||
| eea6121a | 13117 | /* Allocate memory to hold the linker stubs. */ |
| e7d1c40c | 13118 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
13119 | stub_sec != NULL; |
| 13120 | stub_sec = stub_sec->next) | |
| eea6121a AM |
13121 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 13122 | && stub_sec->size != 0) | |
| e717da7e | 13123 | { |
| e7d1c40c | 13124 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
| eea6121a AM |
13125 | if (stub_sec->contents == NULL) |
| 13126 | return FALSE; | |
| eea6121a | 13127 | stub_sec->size = 0; |
| e717da7e | 13128 | } |
| 5d1634d7 | 13129 | |
| 23eb7e01 | 13130 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 13131 | { |
| 9f951329 | 13132 | unsigned int indx; |
| ad8e1ba5 | 13133 | bfd_vma plt0; |
| 9f951329 | 13134 | |
| 721956f4 | 13135 | /* Build the .glink plt call stub. */ |
| e7d1c40c | 13136 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
13137 | { |
| 13138 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
13139 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 13140 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
13141 | if (h == NULL) |
| 13142 | return FALSE; | |
| 13143 | if (h->root.type == bfd_link_hash_new) | |
| 13144 | { | |
| 13145 | h->root.type = bfd_link_hash_defined; | |
| 13146 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 13147 | h->root.u.def.value = 8; |
| f5385ebf AM |
13148 | h->ref_regular = 1; |
| 13149 | h->def_regular = 1; | |
| 13150 | h->ref_regular_nonweak = 1; | |
| 13151 | h->forced_local = 1; | |
| 13152 | h->non_elf = 0; | |
| 2ec55de3 | 13153 | h->root.linker_def = 1; |
| 97b639ba AM |
13154 | } |
| 13155 | } | |
| 33e44f2e AM |
13156 | plt0 = (htab->elf.splt->output_section->vma |
| 13157 | + htab->elf.splt->output_offset | |
| 13158 | - 16); | |
| 176a0d42 AM |
13159 | if (info->emitrelocations) |
| 13160 | { | |
| 13161 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 13162 | if (r == NULL) | |
| 13163 | return FALSE; | |
| 13164 | r->r_offset = (htab->glink->output_offset | |
| 13165 | + htab->glink->output_section->vma); | |
| 13166 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 13167 | r->r_addend = plt0; | |
| 13168 | } | |
| 4ce794b7 | 13169 | p = htab->glink->contents; |
| 176a0d42 | 13170 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
13171 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 13172 | p += 8; | |
| b9e5796b AM |
13173 | if (htab->opd_abi) |
| 13174 | { | |
| 13175 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| 13176 | p += 4; | |
| 13177 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 13178 | p += 4; | |
| 13179 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 13180 | p += 4; | |
| 13181 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 13182 | p += 4; | |
| 13183 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
| 13184 | p += 4; | |
| 13185 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 13186 | p += 4; | |
| 13187 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 13188 | p += 4; | |
| 13189 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
| 13190 | p += 4; | |
| 13191 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 13192 | p += 4; | |
| 13193 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
| 13194 | p += 4; | |
| 13195 | } | |
| 13196 | else | |
| 13197 | { | |
| 13198 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
| 13199 | p += 4; | |
| 13200 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 13201 | p += 4; | |
| 13202 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 13203 | p += 4; | |
| f378ab09 AM |
13204 | bfd_put_32 (htab->glink->owner, STD_R2_0R1 + 24, p); |
| 13205 | p += 4; | |
| b9e5796b AM |
13206 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); |
| 13207 | p += 4; | |
| 13208 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
| 13209 | p += 4; | |
| 13210 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
| 13211 | p += 4; | |
| 13212 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 13213 | p += 4; | |
| 13214 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
| 13215 | p += 4; | |
| 13216 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 13217 | p += 4; | |
| 13218 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
| 13219 | p += 4; | |
| 13220 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 13221 | p += 4; | |
| 13222 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
| 13223 | p += 4; | |
| 13224 | } | |
| 4ce794b7 | 13225 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 13226 | p += 4; |
| ee4bf8d2 AM |
13227 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 13228 | { | |
| 13229 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 13230 | p += 4; | |
| 13231 | } | |
| ad8e1ba5 | 13232 | |
| 9f951329 AM |
13233 | /* Build the .glink lazy link call stubs. */ |
| 13234 | indx = 0; | |
| a345bc8d | 13235 | while (p < htab->glink->contents + htab->glink->rawsize) |
| 9f951329 | 13236 | { |
| b9e5796b | 13237 | if (htab->opd_abi) |
| 9f951329 | 13238 | { |
| b9e5796b AM |
13239 | if (indx < 0x8000) |
| 13240 | { | |
| 13241 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
| 13242 | p += 4; | |
| 13243 | } | |
| 13244 | else | |
| 13245 | { | |
| 13246 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
| 13247 | p += 4; | |
| 13248 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
| 13249 | p); | |
| 13250 | p += 4; | |
| 13251 | } | |
| 9f951329 | 13252 | } |
| 4ce794b7 | 13253 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 13254 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 13255 | indx++; |
| 9f951329 AM |
13256 | p += 4; |
| 13257 | } | |
| a345bc8d AM |
13258 | |
| 13259 | /* Build .glink global entry stubs. */ | |
| 13260 | if (htab->glink->size > htab->glink->rawsize) | |
| afe397ea | 13261 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
| 5d1634d7 | 13262 | } |
| 5d1634d7 | 13263 | |
| 7341d5e2 | 13264 | if (htab->brlt != NULL && htab->brlt->size != 0) |
| 721956f4 | 13265 | { |
| 4ce794b7 | 13266 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 13267 | htab->brlt->size); |
| 4ce794b7 | 13268 | if (htab->brlt->contents == NULL) |
| b34976b6 | 13269 | return FALSE; |
| 721956f4 | 13270 | } |
| ee75fd95 | 13271 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
13272 | { |
| 13273 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 13274 | htab->relbrlt->size); |
| 63bc6f6c AM |
13275 | if (htab->relbrlt->contents == NULL) |
| 13276 | return FALSE; | |
| 13277 | } | |
| 5d1634d7 | 13278 | |
| 721956f4 AM |
13279 | /* Build the stubs as directed by the stub hash table. */ |
| 13280 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 13281 | |
| a4b6fadd AM |
13282 | for (group = htab->group; group != NULL; group = group->next) |
| 13283 | if (group->needs_save_res) | |
| 13284 | { | |
| 13285 | stub_sec = group->stub_sec; | |
| 13286 | memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents, | |
| 13287 | htab->sfpr->size); | |
| 13288 | if (htab->params->emit_stub_syms) | |
| 13289 | { | |
| 13290 | unsigned int i; | |
| 13291 | ||
| 13292 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
| 13293 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
| 13294 | return FALSE; | |
| 13295 | } | |
| 13296 | stub_sec->size += htab->sfpr->size; | |
| 13297 | } | |
| 13298 | ||
| aa8a7074 AM |
13299 | if (htab->relbrlt != NULL) |
| 13300 | htab->relbrlt->reloc_count = 0; | |
| 13301 | ||
| e7d1c40c AM |
13302 | if (htab->params->plt_stub_align != 0) |
| 13303 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
13304 | stub_sec != NULL; |
| 13305 | stub_sec = stub_sec->next) | |
| 13306 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
13307 | stub_sec->size = ((stub_sec->size |
| 13308 | + (1 << htab->params->plt_stub_align) - 1) | |
| 29f628db | 13309 | & -(1 << htab->params->plt_stub_align)); |
| 794e51c0 | 13310 | |
| e7d1c40c | 13311 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
13312 | stub_sec != NULL; |
| 13313 | stub_sec = stub_sec->next) | |
| e717da7e AM |
13314 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 13315 | { | |
| 13316 | stub_sec_count += 1; | |
| c9301e31 AM |
13317 | if (stub_sec->rawsize != stub_sec->size |
| 13318 | && (htab->stub_iteration <= STUB_SHRINK_ITER | |
| 13319 | || stub_sec->rawsize < stub_sec->size)) | |
| e717da7e AM |
13320 | break; |
| 13321 | } | |
| 5d1634d7 | 13322 | |
| da44f4e5 AM |
13323 | /* Note that the glink_eh_frame check here is not only testing that |
| 13324 | the generated size matched the calculated size but also that | |
| 13325 | bfd_elf_discard_info didn't make any changes to the section. */ | |
| 721956f4 | 13326 | if (stub_sec != NULL |
| 58d180e8 AM |
13327 | || (htab->glink_eh_frame != NULL |
| 13328 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
| 5d1634d7 | 13329 | { |
| b34976b6 | 13330 | htab->stub_error = TRUE; |
| 8de848d8 | 13331 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
| 5d1634d7 | 13332 | } |
| 721956f4 | 13333 | |
| d2a300cf AM |
13334 | if (htab->stub_error) |
| 13335 | return FALSE; | |
| 13336 | ||
| 13337 | if (stats != NULL) | |
| 13338 | { | |
| 13339 | *stats = bfd_malloc (500); | |
| 13340 | if (*stats == NULL) | |
| 13341 | return FALSE; | |
| 13342 | ||
| ee75fd95 | 13343 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
13344 | " branch %lu\n" |
| 13345 | " toc adjust %lu\n" | |
| 13346 | " long branch %lu\n" | |
| 13347 | " long toc adj %lu\n" | |
| 794e51c0 | 13348 | " plt call %lu\n" |
| 7341d5e2 AM |
13349 | " plt call toc %lu\n" |
| 13350 | " global entry %lu"), | |
| e717da7e | 13351 | stub_sec_count, |
| ee75fd95 | 13352 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
13353 | htab->stub_count[ppc_stub_long_branch - 1], |
| 13354 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 13355 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 13356 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 794e51c0 | 13357 | htab->stub_count[ppc_stub_plt_call - 1], |
| 7341d5e2 AM |
13358 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
| 13359 | htab->stub_count[ppc_stub_global_entry - 1]); | |
| d2a300cf AM |
13360 | } |
| 13361 | return TRUE; | |
| 5bd4f169 AM |
13362 | } |
| 13363 | ||
| 60124e18 AM |
13364 | /* What to do when ld finds relocations against symbols defined in |
| 13365 | discarded sections. */ | |
| 13366 | ||
| 13367 | static unsigned int | |
| 13368 | ppc64_elf_action_discarded (asection *sec) | |
| 13369 | { | |
| 13370 | if (strcmp (".opd", sec->name) == 0) | |
| 13371 | return 0; | |
| 13372 | ||
| 13373 | if (strcmp (".toc", sec->name) == 0) | |
| 13374 | return 0; | |
| 13375 | ||
| bce50a28 JJ |
13376 | if (strcmp (".toc1", sec->name) == 0) |
| 13377 | return 0; | |
| 13378 | ||
| 60124e18 AM |
13379 | return _bfd_elf_default_action_discarded (sec); |
| 13380 | } | |
| 13381 | ||
| 5bd4f169 AM |
13382 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 13383 | to handle the relocations for a section. | |
| 13384 | ||
| 13385 | The relocs are always passed as Rela structures; if the section | |
| 13386 | actually uses Rel structures, the r_addend field will always be | |
| 13387 | zero. | |
| 13388 | ||
| 13389 | This function is responsible for adjust the section contents as | |
| 13390 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 13391 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
13392 | necessary. |
| 13393 | ||
| 13394 | This function does not have to worry about setting the reloc | |
| 13395 | address or the reloc symbol index. | |
| 13396 | ||
| 13397 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 13398 | ||
| 13399 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 13400 | corresponding to the st_shndx field of each local symbol. | |
| 13401 | ||
| 13402 | The global hash table entry for the global symbols can be found | |
| 13403 | via elf_sym_hashes (input_bfd). | |
| 13404 | ||
| 1049f94e | 13405 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
13406 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 13407 | going to be the section symbol corresponding to the output | |
| 13408 | section, which means that the addend must be adjusted | |
| 13409 | accordingly. */ | |
| 13410 | ||
| b34976b6 | 13411 | static bfd_boolean |
| 4ce794b7 AM |
13412 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 13413 | struct bfd_link_info *info, | |
| 13414 | bfd *input_bfd, | |
| 13415 | asection *input_section, | |
| 13416 | bfd_byte *contents, | |
| 13417 | Elf_Internal_Rela *relocs, | |
| 13418 | Elf_Internal_Sym *local_syms, | |
| 13419 | asection **local_sections) | |
| 5bd4f169 | 13420 | { |
| 65f38f15 | 13421 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
13422 | Elf_Internal_Shdr *symtab_hdr; |
| 13423 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 | 13424 | Elf_Internal_Rela *rel; |
| c316a17c | 13425 | Elf_Internal_Rela *wrel; |
| 5bd4f169 | 13426 | Elf_Internal_Rela *relend; |
| 411e1bfb AM |
13427 | Elf_Internal_Rela outrel; |
| 13428 | bfd_byte *loc; | |
| 411e1bfb | 13429 | struct got_entry **local_got_ents; |
| 5bd4f169 | 13430 | bfd_vma TOCstart; |
| b34976b6 AM |
13431 | bfd_boolean ret = TRUE; |
| 13432 | bfd_boolean is_opd; | |
| 794e51c0 AM |
13433 | /* Assume 'at' branch hints. */ |
| 13434 | bfd_boolean is_isa_v2 = TRUE; | |
| 95f0d0d2 | 13435 | bfd_vma d_offset = (bfd_big_endian (input_bfd) ? 2 : 0); |
| 5bd4f169 | 13436 | |
| 65f38f15 | 13437 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 13438 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
13439 | ppc_howto_init (); |
| 13440 | ||
| 65f38f15 | 13441 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
13442 | if (htab == NULL) |
| 13443 | return FALSE; | |
| ee75fd95 AM |
13444 | |
| 13445 | /* Don't relocate stub sections. */ | |
| e7d1c40c | 13446 | if (input_section->owner == htab->params->stub_bfd) |
| ee75fd95 AM |
13447 | return TRUE; |
| 13448 | ||
| 0c8d6e5c | 13449 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 13450 | |
| 411e1bfb | 13451 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 13452 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 13453 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 13454 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 13455 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 13456 | |
| c316a17c | 13457 | rel = wrel = relocs; |
| 5bd4f169 | 13458 | relend = relocs + input_section->reloc_count; |
| c316a17c | 13459 | for (; rel < relend; wrel++, rel++) |
| 5bd4f169 | 13460 | { |
| 04c9666a | 13461 | enum elf_ppc64_reloc_type r_type; |
| 31c76678 | 13462 | bfd_vma addend; |
| 5bd4f169 AM |
13463 | bfd_reloc_status_type r; |
| 13464 | Elf_Internal_Sym *sym; | |
| 13465 | asection *sec; | |
| 039b3fef AM |
13466 | struct elf_link_hash_entry *h_elf; |
| 13467 | struct ppc_link_hash_entry *h; | |
| 13468 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 13469 | const char *sym_name; |
| 0d4792f7 | 13470 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 13471 | bfd_vma toc_addend; |
| f961d9dd AM |
13472 | unsigned char tls_mask, tls_gd, tls_type; |
| 13473 | unsigned char sym_type; | |
| 5bd4f169 | 13474 | bfd_vma relocation; |
| b34976b6 AM |
13475 | bfd_boolean unresolved_reloc; |
| 13476 | bfd_boolean warned; | |
| bc30df16 | 13477 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
| 67f0cbdb | 13478 | unsigned int insn; |
| e11840f9 | 13479 | unsigned int mask; |
| 721956f4 AM |
13480 | struct ppc_stub_hash_entry *stub_entry; |
| 13481 | bfd_vma max_br_offset; | |
| 13482 | bfd_vma from; | |
| c316a17c | 13483 | Elf_Internal_Rela orig_rel; |
| b80eed39 AM |
13484 | reloc_howto_type *howto; |
| 13485 | struct reloc_howto_struct alt_howto; | |
| 5bd4f169 | 13486 | |
| c316a17c AM |
13487 | again: |
| 13488 | orig_rel = *rel; | |
| 13489 | ||
| 4ce794b7 | 13490 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 13491 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
13492 | |
| 13493 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 13494 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 13495 | proper TOC base to use. */ | |
| 13496 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| c316a17c AM |
13497 | && wrel != relocs |
| 13498 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
| ee87f2da | 13499 | && is_opd) |
| c316a17c | 13500 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
| ee87f2da | 13501 | |
| 4ce794b7 AM |
13502 | sym = NULL; |
| 13503 | sec = NULL; | |
| 039b3fef | 13504 | h_elf = NULL; |
| 4ce794b7 | 13505 | sym_name = NULL; |
| b34976b6 AM |
13506 | unresolved_reloc = FALSE; |
| 13507 | warned = FALSE; | |
| 65f38f15 | 13508 | |
| 0b13192e | 13509 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
13510 | { |
| 13511 | /* It's a local symbol. */ | |
| 74f0fb50 | 13512 | struct _opd_sec_data *opd; |
| 4025353c | 13513 | |
| 5bd4f169 AM |
13514 | sym = local_syms + r_symndx; |
| 13515 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 13516 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 13517 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 13518 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
13519 | opd = get_opd_info (sec); |
| 13520 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 13521 | { |
| 51aecdc5 AM |
13522 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
| 13523 | + rel->r_addend)]; | |
| 4025353c AM |
13524 | if (adjust == -1) |
| 13525 | relocation = 0; | |
| 13526 | else | |
| 4cc603a5 AM |
13527 | { |
| 13528 | /* If this is a relocation against the opd section sym | |
| 13529 | and we have edited .opd, adjust the reloc addend so | |
| 13530 | that ld -r and ld --emit-relocs output is correct. | |
| 13531 | If it is a reloc against some other .opd symbol, | |
| 13532 | then the symbol value will be adjusted later. */ | |
| 13533 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 13534 | rel->r_addend += adjust; | |
| 13535 | else | |
| 13536 | relocation += adjust; | |
| 13537 | } | |
| 1e2f5b6e | 13538 | } |
| 5bd4f169 AM |
13539 | } |
| 13540 | else | |
| 13541 | { | |
| 62d887d4 L |
13542 | bfd_boolean ignored; |
| 13543 | ||
| b2a8e766 AM |
13544 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 13545 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 13546 | h_elf, sec, relocation, |
| 62d887d4 | 13547 | unresolved_reloc, warned, ignored); |
| 039b3fef AM |
13548 | sym_name = h_elf->root.root.string; |
| 13549 | sym_type = h_elf->type; | |
| b69fdb4e AM |
13550 | if (sec != NULL |
| 13551 | && sec->owner == output_bfd | |
| 13552 | && strcmp (sec->name, ".opd") == 0) | |
| 13553 | { | |
| 13554 | /* This is a symbol defined in a linker script. All | |
| 13555 | such are defined in output sections, even those | |
| 13556 | defined by simple assignment from a symbol defined in | |
| 13557 | an input section. Transfer the symbol to an | |
| 13558 | appropriate input .opd section, so that a branch to | |
| 13559 | this symbol will be mapped to the location specified | |
| 13560 | by the opd entry. */ | |
| 13561 | struct bfd_link_order *lo; | |
| 13562 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
| 13563 | if (lo->type == bfd_indirect_link_order) | |
| 13564 | { | |
| 13565 | asection *isec = lo->u.indirect.section; | |
| 13566 | if (h_elf->root.u.def.value >= isec->output_offset | |
| 13567 | && h_elf->root.u.def.value < (isec->output_offset | |
| 13568 | + isec->size)) | |
| 13569 | { | |
| 13570 | h_elf->root.u.def.value -= isec->output_offset; | |
| 13571 | h_elf->root.u.def.section = isec; | |
| 13572 | sec = isec; | |
| 13573 | break; | |
| 13574 | } | |
| 13575 | } | |
| 13576 | } | |
| 5bd4f169 | 13577 | } |
| 039b3fef | 13578 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 13579 | |
| dbaa2011 | 13580 | if (sec != NULL && discarded_section (sec)) |
| c316a17c AM |
13581 | { |
| 13582 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
| 13583 | input_bfd, input_section, | |
| 13584 | contents + rel->r_offset); | |
| 13585 | wrel->r_offset = rel->r_offset; | |
| 13586 | wrel->r_info = 0; | |
| 13587 | wrel->r_addend = 0; | |
| 13588 | ||
| 13589 | /* For ld -r, remove relocations in debug sections against | |
| 13590 | sections defined in discarded sections. Not done for | |
| 13591 | non-debug to preserve relocs in .eh_frame which the | |
| 13592 | eh_frame editing code expects to be present. */ | |
| 13593 | if (bfd_link_relocatable (info) | |
| 13594 | && (input_section->flags & SEC_DEBUGGING)) | |
| 13595 | wrel--; | |
| 13596 | ||
| 13597 | continue; | |
| 13598 | } | |
| ab96bf03 | 13599 | |
| 0e1862bb | 13600 | if (bfd_link_relocatable (info)) |
| c316a17c | 13601 | goto copy_reloc; |
| ab96bf03 | 13602 | |
| f40da81b AM |
13603 | if (h != NULL && &h->elf == htab->elf.hgot) |
| 13604 | { | |
| 6f20ed8a | 13605 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
| f40da81b AM |
13606 | sec = bfd_abs_section_ptr; |
| 13607 | unresolved_reloc = FALSE; | |
| 13608 | } | |
| 13609 | ||
| 951fd09b AM |
13610 | /* TLS optimizations. Replace instruction sequences and relocs |
| 13611 | based on information we collected in tls_optimize. We edit | |
| 13612 | RELOCS so that --emit-relocs will output something sensible | |
| 13613 | for the final instruction stream. */ | |
| 13614 | tls_mask = 0; | |
| 13615 | tls_gd = 0; | |
| 0d4792f7 | 13616 | toc_symndx = 0; |
| 727fc41e AM |
13617 | if (h != NULL) |
| 13618 | tls_mask = h->tls_mask; | |
| 13619 | else if (local_got_ents != NULL) | |
| 411e1bfb | 13620 | { |
| e054468f AM |
13621 | struct plt_entry **local_plt = (struct plt_entry **) |
| 13622 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 13623 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 13624 | (local_plt + symtab_hdr->sh_info); |
| 727fc41e AM |
13625 | tls_mask = lgot_masks[r_symndx]; |
| 13626 | } | |
| 13627 | if (tls_mask == 0 | |
| 13628 | && (r_type == R_PPC64_TLS | |
| 13629 | || r_type == R_PPC64_TLSGD | |
| 13630 | || r_type == R_PPC64_TLSLD)) | |
| 13631 | { | |
| 13632 | /* Check for toc tls entries. */ | |
| f961d9dd | 13633 | unsigned char *toc_tls; |
| 0d4792f7 | 13634 | |
| 727fc41e AM |
13635 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13636 | &local_syms, rel, input_bfd)) | |
| 13637 | return FALSE; | |
| 0d4792f7 | 13638 | |
| 727fc41e AM |
13639 | if (toc_tls) |
| 13640 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
13641 | } |
| 13642 | ||
| 13643 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 13644 | relocs are used with non-tls syms. */ | |
| cf35638d | 13645 | if (r_symndx != STN_UNDEF |
| 0d4792f7 AM |
13646 | && r_type != R_PPC64_NONE |
| 13647 | && (h == NULL | |
| 039b3fef AM |
13648 | || h->elf.root.type == bfd_link_hash_defined |
| 13649 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
13650 | && (IS_PPC64_TLS_RELOC (r_type) |
| 13651 | != (sym_type == STT_TLS | |
| 13652 | || (sym_type == STT_SECTION | |
| 13653 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 13654 | { |
| 727fc41e AM |
13655 | if (tls_mask != 0 |
| 13656 | && (r_type == R_PPC64_TLS | |
| 13657 | || r_type == R_PPC64_TLSGD | |
| 13658 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
13659 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 13660 | ; | |
| 13661 | else | |
| 25f53a85 | 13662 | info->callbacks->einfo |
| 1d483afe | 13663 | (!IS_PPC64_TLS_RELOC (r_type) |
| 695344c0 | 13664 | /* xgettext:c-format */ |
| 174d0a74 | 13665 | ? _("%H: %s used with TLS symbol `%T'\n") |
| 695344c0 | 13666 | /* xgettext:c-format */ |
| 174d0a74 | 13667 | : _("%H: %s used with non-TLS symbol `%T'\n"), |
| 25f53a85 | 13668 | input_bfd, input_section, rel->r_offset, |
| 0d4792f7 AM |
13669 | ppc64_elf_howto_table[r_type]->name, |
| 13670 | sym_name); | |
| 411e1bfb AM |
13671 | } |
| 13672 | ||
| 13673 | /* Ensure reloc mapping code below stays sane. */ | |
| 13674 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 13675 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 13676 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 13677 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 13678 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 13679 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 13680 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 13681 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 13682 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 13683 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 13684 | abort (); | |
| 0d4792f7 | 13685 | |
| 411e1bfb AM |
13686 | switch (r_type) |
| 13687 | { | |
| 13688 | default: | |
| 411e1bfb AM |
13689 | break; |
| 13690 | ||
| ba761f19 | 13691 | case R_PPC64_LO_DS_OPT: |
| 95f0d0d2 | 13692 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset - d_offset); |
| ba761f19 AM |
13693 | if ((insn & (0x3f << 26)) != 58u << 26) |
| 13694 | abort (); | |
| 13695 | insn += (14u << 26) - (58u << 26); | |
| 95f0d0d2 | 13696 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset - d_offset); |
| ba761f19 AM |
13697 | r_type = R_PPC64_TOC16_LO; |
| 13698 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13699 | break; | |
| 13700 | ||
| 411e1bfb AM |
13701 | case R_PPC64_TOC16: |
| 13702 | case R_PPC64_TOC16_LO: | |
| 13703 | case R_PPC64_TOC16_DS: | |
| 13704 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
13705 | { |
| 13706 | /* Check for toc tls entries. */ | |
| f961d9dd | 13707 | unsigned char *toc_tls; |
| 951fd09b | 13708 | int retval; |
| 411e1bfb | 13709 | |
| 3a71aa26 AM |
13710 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13711 | &local_syms, rel, input_bfd); | |
| 951fd09b | 13712 | if (retval == 0) |
| 411e1bfb AM |
13713 | return FALSE; |
| 13714 | ||
| 13715 | if (toc_tls) | |
| 13716 | { | |
| 951fd09b | 13717 | tls_mask = *toc_tls; |
| 411e1bfb AM |
13718 | if (r_type == R_PPC64_TOC16_DS |
| 13719 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
13720 | { |
| 13721 | if (tls_mask != 0 | |
| 13722 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 13723 | goto toctprel; | |
| 13724 | } | |
| 411e1bfb | 13725 | else |
| 951fd09b AM |
13726 | { |
| 13727 | /* If we found a GD reloc pair, then we might be | |
| 13728 | doing a GD->IE transition. */ | |
| 13729 | if (retval == 2) | |
| 13730 | { | |
| 13731 | tls_gd = TLS_TPRELGD; | |
| 13732 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13733 | goto tls_ldgd_opt; |
| 951fd09b AM |
13734 | } |
| 13735 | else if (retval == 3) | |
| 13736 | { | |
| 13737 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 13738 | goto tls_ldgd_opt; |
| 951fd09b AM |
13739 | } |
| 13740 | } | |
| 411e1bfb AM |
13741 | } |
| 13742 | } | |
| 13743 | break; | |
| 13744 | ||
| 9d6ded02 AM |
13745 | case R_PPC64_GOT_TPREL16_HI: |
| 13746 | case R_PPC64_GOT_TPREL16_HA: | |
| 13747 | if (tls_mask != 0 | |
| 13748 | && (tls_mask & TLS_TPREL) == 0) | |
| 13749 | { | |
| 13750 | rel->r_offset -= d_offset; | |
| 95f0d0d2 | 13751 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
| 9d6ded02 AM |
13752 | r_type = R_PPC64_NONE; |
| 13753 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13754 | } | |
| 13755 | break; | |
| 13756 | ||
| 411e1bfb AM |
13757 | case R_PPC64_GOT_TPREL16_DS: |
| 13758 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
13759 | if (tls_mask != 0 |
| 13760 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13761 | { |
| 81407a69 | 13762 | toctprel: |
| 95f0d0d2 | 13763 | insn = bfd_get_32 (input_bfd, |
| c316a17c | 13764 | contents + rel->r_offset - d_offset); |
| 411e1bfb AM |
13765 | insn &= 31 << 21; |
| 13766 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| 95f0d0d2 | 13767 | bfd_put_32 (input_bfd, insn, |
| c316a17c | 13768 | contents + rel->r_offset - d_offset); |
| 411e1bfb | 13769 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
13770 | if (toc_symndx != 0) |
| 13771 | { | |
| 13772 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13773 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13774 | /* We changed the symbol. Start over in order to |
| 13775 | get h, sym, sec etc. right. */ | |
| c316a17c | 13776 | goto again; |
| 0d4792f7 AM |
13777 | } |
| 13778 | else | |
| 13779 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13780 | } |
| 13781 | break; | |
| 13782 | ||
| 13783 | case R_PPC64_TLS: | |
| 951fd09b AM |
13784 | if (tls_mask != 0 |
| 13785 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13786 | { |
| 95f0d0d2 | 13787 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
13788 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 13789 | if (insn == 0) | |
| 411e1bfb | 13790 | abort (); |
| 95f0d0d2 | 13791 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 13792 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
13793 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 13794 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
13795 | r_type = R_PPC64_TPREL16_LO; |
| 13796 | if (toc_symndx != 0) | |
| 13797 | { | |
| 13798 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13799 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13800 | /* We changed the symbol. Start over in order to |
| 13801 | get h, sym, sec etc. right. */ | |
| c316a17c | 13802 | goto again; |
| 0d4792f7 AM |
13803 | } |
| 13804 | else | |
| 13805 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13806 | } |
| 13807 | break; | |
| 13808 | ||
| 411e1bfb AM |
13809 | case R_PPC64_GOT_TLSGD16_HI: |
| 13810 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
13811 | tls_gd = TLS_TPRELGD; |
| 13812 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13813 | goto tls_gdld_hi; | |
| 13814 | break; | |
| 13815 | ||
| 411e1bfb AM |
13816 | case R_PPC64_GOT_TLSLD16_HI: |
| 13817 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13818 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 13819 | { |
| 951fd09b AM |
13820 | tls_gdld_hi: |
| 13821 | if ((tls_mask & tls_gd) != 0) | |
| 13822 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13823 | + R_PPC64_GOT_TPREL16_DS); | |
| 13824 | else | |
| 411e1bfb | 13825 | { |
| 4fe5ca5b | 13826 | rel->r_offset -= d_offset; |
| 95f0d0d2 | 13827 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
| 951fd09b | 13828 | r_type = R_PPC64_NONE; |
| 411e1bfb | 13829 | } |
| 951fd09b | 13830 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
13831 | } |
| 13832 | break; | |
| 13833 | ||
| 951fd09b AM |
13834 | case R_PPC64_GOT_TLSGD16: |
| 13835 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13836 | tls_gd = TLS_TPRELGD; | |
| 13837 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13838 | goto tls_ldgd_opt; |
| 951fd09b | 13839 | break; |
| 411e1bfb | 13840 | |
| 951fd09b AM |
13841 | case R_PPC64_GOT_TLSLD16: |
| 13842 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13843 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13844 | { | |
| 3a71aa26 | 13845 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
13846 | bfd_vma offset; |
| 13847 | ||
| 13848 | tls_ldgd_opt: | |
| 727fc41e AM |
13849 | offset = (bfd_vma) -1; |
| 13850 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 13851 | __tls_get_addr calls, we must trust that the call | |
| 13852 | stays with its arg setup insns, ie. that the next | |
| 13853 | reloc is the __tls_get_addr call associated with | |
| 13854 | the current reloc. Edit both insns. */ | |
| 13855 | if (input_section->has_tls_get_addr_call | |
| 13856 | && rel + 1 < relend | |
| 13857 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 13858 | htab->tls_get_addr, | |
| 13859 | htab->tls_get_addr_fd)) | |
| 13860 | offset = rel[1].r_offset; | |
| b86ac8e3 AM |
13861 | /* We read the low GOT_TLS (or TOC16) insn because we |
| 13862 | need to keep the destination reg. It may be | |
| 13863 | something other than the usual r3, and moved to r3 | |
| 13864 | before the call by intervening code. */ | |
| 95f0d0d2 | 13865 | insn1 = bfd_get_32 (input_bfd, |
| b86ac8e3 | 13866 | contents + rel->r_offset - d_offset); |
| 102890f0 | 13867 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 13868 | { |
| 102890f0 | 13869 | /* IE */ |
| b86ac8e3 | 13870 | insn1 &= (0x1f << 21) | (0x1f << 16); |
| 102890f0 AM |
13871 | insn1 |= 58 << 26; /* ld */ |
| 13872 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 13873 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 13874 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
13875 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 13876 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13877 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 13878 | else |
| 102890f0 AM |
13879 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 13880 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13881 | } | |
| 13882 | else | |
| 13883 | { | |
| 13884 | /* LE */ | |
| b86ac8e3 AM |
13885 | insn1 &= 0x1f << 21; |
| 13886 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
| 102890f0 AM |
13887 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13888 | if (tls_gd == 0) | |
| 951fd09b | 13889 | { |
| 102890f0 | 13890 | /* Was an LD reloc. */ |
| 1d483afe AM |
13891 | if (toc_symndx) |
| 13892 | sec = local_sections[toc_symndx]; | |
| 13893 | for (r_symndx = 0; | |
| 13894 | r_symndx < symtab_hdr->sh_info; | |
| 13895 | r_symndx++) | |
| 13896 | if (local_sections[r_symndx] == sec) | |
| 13897 | break; | |
| 13898 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13899 | r_symndx = STN_UNDEF; |
| 102890f0 | 13900 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13901 | if (r_symndx != STN_UNDEF) |
| 1d483afe AM |
13902 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13903 | + sec->output_offset | |
| 13904 | + sec->output_section->vma); | |
| 951fd09b | 13905 | } |
| 102890f0 | 13906 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
13907 | { |
| 13908 | r_symndx = toc_symndx; | |
| 13909 | rel->r_addend = toc_addend; | |
| 13910 | } | |
| 102890f0 AM |
13911 | r_type = R_PPC64_TPREL16_HA; |
| 13912 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
13913 | if (offset != (bfd_vma) -1) |
| 13914 | { | |
| 13915 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 13916 | R_PPC64_TPREL16_LO); | |
| 13917 | rel[1].r_offset = offset + d_offset; | |
| 13918 | rel[1].r_addend = rel->r_addend; | |
| 13919 | } | |
| 102890f0 | 13920 | } |
| 95f0d0d2 | 13921 | bfd_put_32 (input_bfd, insn1, |
| 3a71aa26 | 13922 | contents + rel->r_offset - d_offset); |
| 727fc41e AM |
13923 | if (offset != (bfd_vma) -1) |
| 13924 | { | |
| 95f0d0d2 | 13925 | insn3 = bfd_get_32 (input_bfd, |
| 727fc41e AM |
13926 | contents + offset + 4); |
| 13927 | if (insn3 == NOP | |
| 13928 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13929 | { | |
| 13930 | rel[1].r_offset += 4; | |
| 95f0d0d2 | 13931 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
| 727fc41e AM |
13932 | insn2 = NOP; |
| 13933 | } | |
| 95f0d0d2 | 13934 | bfd_put_32 (input_bfd, insn2, contents + offset); |
| 727fc41e AM |
13935 | } |
| 13936 | if ((tls_mask & tls_gd) == 0 | |
| 13937 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 13938 | { | |
| 13939 | /* We changed the symbol. Start over in order | |
| 13940 | to get h, sym, sec etc. right. */ | |
| c316a17c | 13941 | goto again; |
| 727fc41e AM |
13942 | } |
| 13943 | } | |
| 13944 | break; | |
| 13945 | ||
| 13946 | case R_PPC64_TLSGD: | |
| 13947 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13948 | { | |
| 13949 | unsigned int insn2, insn3; | |
| 13950 | bfd_vma offset = rel->r_offset; | |
| 13951 | ||
| 13952 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13953 | { | |
| 13954 | /* IE */ | |
| 13955 | r_type = R_PPC64_NONE; | |
| 13956 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 13957 | } | |
| 13958 | else | |
| 13959 | { | |
| 13960 | /* LE */ | |
| 13961 | if (toc_symndx != 0) | |
| 13962 | { | |
| 13963 | r_symndx = toc_symndx; | |
| 13964 | rel->r_addend = toc_addend; | |
| 13965 | } | |
| 13966 | r_type = R_PPC64_TPREL16_LO; | |
| 13967 | rel->r_offset = offset + d_offset; | |
| 13968 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13969 | } | |
| 13970 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13971 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13972 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13973 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 95f0d0d2 | 13974 | insn3 = bfd_get_32 (input_bfd, |
| 3a71aa26 | 13975 | contents + offset + 4); |
| 102890f0 AM |
13976 | if (insn3 == NOP |
| 13977 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13978 | { | |
| 727fc41e | 13979 | rel->r_offset += 4; |
| 95f0d0d2 | 13980 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
| 3a71aa26 | 13981 | insn2 = NOP; |
| 102890f0 | 13982 | } |
| 95f0d0d2 | 13983 | bfd_put_32 (input_bfd, insn2, contents + offset); |
| 727fc41e | 13984 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| c316a17c | 13985 | goto again; |
| 411e1bfb | 13986 | } |
| 411e1bfb AM |
13987 | break; |
| 13988 | ||
| 727fc41e AM |
13989 | case R_PPC64_TLSLD: |
| 13990 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13991 | { | |
| 13992 | unsigned int insn2, insn3; | |
| 13993 | bfd_vma offset = rel->r_offset; | |
| 13994 | ||
| 13995 | if (toc_symndx) | |
| 13996 | sec = local_sections[toc_symndx]; | |
| 13997 | for (r_symndx = 0; | |
| 13998 | r_symndx < symtab_hdr->sh_info; | |
| 13999 | r_symndx++) | |
| 14000 | if (local_sections[r_symndx] == sec) | |
| 14001 | break; | |
| 14002 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 14003 | r_symndx = STN_UNDEF; |
| 727fc41e | 14004 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 14005 | if (r_symndx != STN_UNDEF) |
| 727fc41e AM |
14006 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 14007 | + sec->output_offset | |
| 14008 | + sec->output_section->vma); | |
| 14009 | ||
| 14010 | r_type = R_PPC64_TPREL16_LO; | |
| 14011 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 14012 | rel->r_offset = offset + d_offset; | |
| 14013 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 14014 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 14015 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e | 14016 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 95f0d0d2 | 14017 | insn3 = bfd_get_32 (input_bfd, |
| 727fc41e AM |
14018 | contents + offset + 4); |
| 14019 | if (insn3 == NOP | |
| 14020 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 14021 | { | |
| 14022 | rel->r_offset += 4; | |
| 95f0d0d2 | 14023 | bfd_put_32 (input_bfd, insn2, contents + offset + 4); |
| 727fc41e AM |
14024 | insn2 = NOP; |
| 14025 | } | |
| 95f0d0d2 | 14026 | bfd_put_32 (input_bfd, insn2, contents + offset); |
| c316a17c | 14027 | goto again; |
| 727fc41e AM |
14028 | } |
| 14029 | break; | |
| 14030 | ||
| 411e1bfb | 14031 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
14032 | if (rel + 1 < relend |
| 14033 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 14034 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 14035 | { |
| 951fd09b AM |
14036 | if ((tls_mask & TLS_GD) == 0) |
| 14037 | { | |
| 14038 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 14039 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 14040 | r_type = R_PPC64_TPREL64; | |
| 14041 | else | |
| 14042 | { | |
| 4ce794b7 | 14043 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
14044 | r_type = R_PPC64_NONE; |
| 14045 | } | |
| 14046 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 14047 | } | |
| 14048 | } | |
| 14049 | else | |
| 14050 | { | |
| 14051 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 14052 | { |
| 4ce794b7 | 14053 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 14054 | r_type = R_PPC64_NONE; |
| 951fd09b | 14055 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 14056 | } |
| 411e1bfb AM |
14057 | } |
| 14058 | break; | |
| 14059 | ||
| 14060 | case R_PPC64_TPREL64: | |
| 951fd09b | 14061 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
14062 | { |
| 14063 | r_type = R_PPC64_NONE; | |
| 14064 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 14065 | } | |
| 14066 | break; | |
| 52a82034 | 14067 | |
| 006589cf AM |
14068 | case R_PPC64_ENTRY: |
| 14069 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
| 14070 | if (!bfd_link_pic (info) | |
| 14071 | && !info->traditional_format | |
| 14072 | && relocation + 0x80008000 <= 0xffffffff) | |
| 14073 | { | |
| 14074 | unsigned int insn1, insn2; | |
| 14075 | ||
| 14076 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 14077 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 14078 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
| 14079 | && insn2 == ADD_R2_R2_R12) | |
| 14080 | { | |
| 95f0d0d2 | 14081 | bfd_put_32 (input_bfd, |
| 006589cf AM |
14082 | LIS_R2 + PPC_HA (relocation), |
| 14083 | contents + rel->r_offset); | |
| 95f0d0d2 | 14084 | bfd_put_32 (input_bfd, |
| 006589cf AM |
14085 | ADDI_R2_R2 + PPC_LO (relocation), |
| 14086 | contents + rel->r_offset + 4); | |
| 14087 | } | |
| 14088 | } | |
| 14089 | else | |
| 14090 | { | |
| 14091 | relocation -= (rel->r_offset | |
| 14092 | + input_section->output_offset | |
| 14093 | + input_section->output_section->vma); | |
| 14094 | if (relocation + 0x80008000 <= 0xffffffff) | |
| 14095 | { | |
| 14096 | unsigned int insn1, insn2; | |
| 14097 | ||
| 14098 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 14099 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 14100 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
| 14101 | && insn2 == ADD_R2_R2_R12) | |
| 14102 | { | |
| 95f0d0d2 | 14103 | bfd_put_32 (input_bfd, |
| 006589cf AM |
14104 | ADDIS_R2_R12 + PPC_HA (relocation), |
| 14105 | contents + rel->r_offset); | |
| 95f0d0d2 | 14106 | bfd_put_32 (input_bfd, |
| 006589cf AM |
14107 | ADDI_R2_R2 + PPC_LO (relocation), |
| 14108 | contents + rel->r_offset + 4); | |
| 14109 | } | |
| 14110 | } | |
| 14111 | } | |
| 14112 | break; | |
| 14113 | ||
| 52a82034 AM |
14114 | case R_PPC64_REL16_HA: |
| 14115 | /* If we are generating a non-PIC executable, edit | |
| 14116 | . 0: addis 2,12,.TOC.-0b@ha | |
| 14117 | . addi 2,2,.TOC.-0b@l | |
| 14118 | used by ELFv2 global entry points to set up r2, to | |
| 14119 | . lis 2,.TOC.@ha | |
| 14120 | . addi 2,2,.TOC.@l | |
| 14121 | if .TOC. is in range. */ | |
| 0e1862bb | 14122 | if (!bfd_link_pic (info) |
| 810d4e75 | 14123 | && !info->traditional_format |
| 006589cf | 14124 | && !htab->opd_abi |
| 4f038ee5 | 14125 | && rel->r_addend == d_offset |
| 52a82034 AM |
14126 | && h != NULL && &h->elf == htab->elf.hgot |
| 14127 | && rel + 1 < relend | |
| 14128 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
| 14129 | && rel[1].r_offset == rel->r_offset + 4 | |
| 14130 | && rel[1].r_addend == rel->r_addend + 4 | |
| 14131 | && relocation + 0x80008000 <= 0xffffffff) | |
| 14132 | { | |
| 14133 | unsigned int insn1, insn2; | |
| 14134 | bfd_vma offset = rel->r_offset - d_offset; | |
| 95f0d0d2 AM |
14135 | insn1 = bfd_get_32 (input_bfd, contents + offset); |
| 14136 | insn2 = bfd_get_32 (input_bfd, contents + offset + 4); | |
| 006589cf AM |
14137 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
| 14138 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
| 52a82034 AM |
14139 | { |
| 14140 | r_type = R_PPC64_ADDR16_HA; | |
| 14141 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 14142 | rel->r_addend -= d_offset; | |
| 14143 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
| 14144 | rel[1].r_addend -= d_offset + 4; | |
| 95f0d0d2 | 14145 | bfd_put_32 (input_bfd, LIS_R2, contents + offset); |
| 52a82034 AM |
14146 | } |
| 14147 | } | |
| 14148 | break; | |
| 411e1bfb AM |
14149 | } |
| 14150 | ||
| 14151 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 14152 | insn = 0; |
| b25116a9 AM |
14153 | max_br_offset = 1 << 25; |
| 14154 | addend = rel->r_addend; | |
| bc30df16 | 14155 | reloc_dest = DEST_NORMAL; |
| 65f38f15 | 14156 | switch (r_type) |
| 5bd4f169 AM |
14157 | { |
| 14158 | default: | |
| 65f38f15 | 14159 | break; |
| 5bd4f169 | 14160 | |
| 3b421ab3 AM |
14161 | case R_PPC64_TOCSAVE: |
| 14162 | if (relocation + addend == (rel->r_offset | |
| 14163 | + input_section->output_offset | |
| 14164 | + input_section->output_section->vma) | |
| 14165 | && tocsave_find (htab, NO_INSERT, | |
| 14166 | &local_syms, rel, input_bfd)) | |
| 14167 | { | |
| 14168 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 14169 | if (insn == NOP | |
| 14170 | || insn == CROR_151515 || insn == CROR_313131) | |
| a078d95a AM |
14171 | bfd_put_32 (input_bfd, |
| 14172 | STD_R2_0R1 + STK_TOC (htab), | |
| 3b421ab3 AM |
14173 | contents + rel->r_offset); |
| 14174 | } | |
| 14175 | break; | |
| 14176 | ||
| 65f38f15 AM |
14177 | /* Branch taken prediction relocations. */ |
| 14178 | case R_PPC64_ADDR14_BRTAKEN: | |
| 14179 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 | 14180 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 1a0670f3 | 14181 | /* Fall through. */ |
| 65f38f15 | 14182 | |
| 86c76c7b | 14183 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
14184 | case R_PPC64_ADDR14_BRNTAKEN: |
| 14185 | case R_PPC64_REL14_BRNTAKEN: | |
| 95f0d0d2 | 14186 | insn |= bfd_get_32 (input_bfd, |
| 411e1bfb | 14187 | contents + rel->r_offset) & ~(0x01 << 21); |
| 1a0670f3 | 14188 | /* Fall through. */ |
| 86c76c7b | 14189 | |
| b25116a9 AM |
14190 | case R_PPC64_REL14: |
| 14191 | max_br_offset = 1 << 15; | |
| 1a0670f3 | 14192 | /* Fall through. */ |
| 5bd4f169 | 14193 | |
| 65f38f15 | 14194 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
14195 | /* Calls to functions with a different TOC, such as calls to |
| 14196 | shared objects, need to alter the TOC pointer. This is | |
| 14197 | done using a linkage stub. A REL24 branching to these | |
| 14198 | linkage stubs needs to be followed by a nop, as the nop | |
| 14199 | will be replaced with an instruction to restore the TOC | |
| 14200 | base pointer. */ | |
| 8387904d | 14201 | fdh = h; |
| b31867b6 AM |
14202 | if (h != NULL |
| 14203 | && h->oh != NULL | |
| 14204 | && h->oh->is_func_descriptor) | |
| 14205 | fdh = ppc_follow_link (h->oh); | |
| 31c76678 DK |
14206 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
| 14207 | htab); | |
| 6abec6bc | 14208 | if (stub_entry != NULL |
| ad8e1ba5 | 14209 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 | 14210 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
| ad8e1ba5 AM |
14211 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 14212 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 14213 | { |
| b25116a9 | 14214 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 14215 | |
| 6e1816be AM |
14216 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 14217 | && !htab->opd_abi | |
| 14218 | && htab->params->plt_localentry0 != 0 | |
| 14219 | && is_elfv2_localentry0 (&h->elf)) | |
| 14220 | { | |
| 14221 | /* The function doesn't use or change r2. */ | |
| 14222 | can_plt_call = TRUE; | |
| 14223 | } | |
| 14224 | ||
| f378ab09 | 14225 | /* All of these stubs may modify r2, so there must be a |
| ba8ca3e7 AM |
14226 | branch and link followed by a nop. The nop is |
| 14227 | replaced by an insn to restore r2. */ | |
| 6e1816be | 14228 | else if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 14229 | { |
| ba8ca3e7 AM |
14230 | unsigned long br; |
| 14231 | ||
| 14232 | br = bfd_get_32 (input_bfd, | |
| 14233 | contents + rel->r_offset); | |
| 14234 | if ((br & 1) != 0) | |
| 41bd81ab | 14235 | { |
| ba8ca3e7 AM |
14236 | unsigned long nop; |
| 14237 | ||
| 14238 | nop = bfd_get_32 (input_bfd, | |
| 14239 | contents + rel->r_offset + 4); | |
| 14240 | if (nop == NOP | |
| 14241 | || nop == CROR_151515 || nop == CROR_313131) | |
| a7f2871e | 14242 | { |
| ba8ca3e7 AM |
14243 | if (h != NULL |
| 14244 | && (h == htab->tls_get_addr_fd | |
| 14245 | || h == htab->tls_get_addr) | |
| 7c9cf415 | 14246 | && htab->params->tls_get_addr_opt) |
| ba8ca3e7 AM |
14247 | { |
| 14248 | /* Special stub used, leave nop alone. */ | |
| 14249 | } | |
| 14250 | else | |
| a078d95a AM |
14251 | bfd_put_32 (input_bfd, |
| 14252 | LD_R2_0R1 + STK_TOC (htab), | |
| ba8ca3e7 AM |
14253 | contents + rel->r_offset + 4); |
| 14254 | can_plt_call = TRUE; | |
| a7f2871e | 14255 | } |
| 41bd81ab | 14256 | } |
| 5bd4f169 | 14257 | } |
| 721956f4 | 14258 | |
| ba8ca3e7 | 14259 | if (!can_plt_call && h != NULL) |
| 721956f4 | 14260 | { |
| ba8ca3e7 AM |
14261 | const char *name = h->elf.root.root.string; |
| 14262 | ||
| 14263 | if (*name == '.') | |
| 14264 | ++name; | |
| 14265 | ||
| 14266 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
| 14267 | && (name[17] == 0 || name[17] == '@')) | |
| 6ab189d5 | 14268 | { |
| ba8ca3e7 AM |
14269 | /* Allow crt1 branch to go via a toc adjusting |
| 14270 | stub. Other calls that never return could do | |
| 14271 | the same, if we could detect such. */ | |
| b25116a9 | 14272 | can_plt_call = TRUE; |
| 6ab189d5 | 14273 | } |
| ba8ca3e7 AM |
14274 | } |
| 14275 | ||
| 14276 | if (!can_plt_call) | |
| 14277 | { | |
| 14278 | /* g++ as of 20130507 emits self-calls without a | |
| 14279 | following nop. This is arguably wrong since we | |
| 14280 | have conflicting information. On the one hand a | |
| 14281 | global symbol and on the other a local call | |
| 14282 | sequence, but don't error for this special case. | |
| 14283 | It isn't possible to cheaply verify we have | |
| 14284 | exactly such a call. Allow all calls to the same | |
| 14285 | section. */ | |
| 14286 | asection *code_sec = sec; | |
| 14287 | ||
| 14288 | if (get_opd_info (sec) != NULL) | |
| ad8e1ba5 | 14289 | { |
| ba8ca3e7 AM |
14290 | bfd_vma off = (relocation + addend |
| 14291 | - sec->output_section->vma | |
| 14292 | - sec->output_offset); | |
| bc30df16 | 14293 | |
| ba8ca3e7 | 14294 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
| ad8e1ba5 | 14295 | } |
| ba8ca3e7 AM |
14296 | if (code_sec == input_section) |
| 14297 | can_plt_call = TRUE; | |
| 14298 | } | |
| 14299 | ||
| 14300 | if (!can_plt_call) | |
| 14301 | { | |
| 4805fc55 AM |
14302 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 14303 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 14304 | info->callbacks->einfo | |
| 695344c0 | 14305 | /* xgettext:c-format */ |
| 174d0a74 | 14306 | (_("%H: call to `%T' lacks nop, can't restore toc; " |
| 4805fc55 AM |
14307 | "recompile with -fPIC\n"), |
| 14308 | input_bfd, input_section, rel->r_offset, sym_name); | |
| 14309 | else | |
| 14310 | info->callbacks->einfo | |
| 695344c0 | 14311 | /* xgettext:c-format */ |
| 174d0a74 | 14312 | (_("%H: call to `%T' lacks nop, can't restore toc; " |
| 4805fc55 AM |
14313 | "(-mcmodel=small toc adjust stub)\n"), |
| 14314 | input_bfd, input_section, rel->r_offset, sym_name); | |
| ba8ca3e7 AM |
14315 | |
| 14316 | bfd_set_error (bfd_error_bad_value); | |
| 14317 | ret = FALSE; | |
| 721956f4 AM |
14318 | } |
| 14319 | ||
| b25116a9 | 14320 | if (can_plt_call |
| 794e51c0 AM |
14321 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 14322 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| b25116a9 AM |
14323 | unresolved_reloc = FALSE; |
| 14324 | } | |
| 14325 | ||
| 6abec6bc AM |
14326 | if ((stub_entry == NULL |
| 14327 | || stub_entry->stub_type == ppc_stub_long_branch | |
| 14328 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 8387904d AM |
14329 | && get_opd_info (sec) != NULL) |
| 14330 | { | |
| 14331 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
14332 | bfd_vma off = (relocation + addend |
| 14333 | - sec->output_section->vma | |
| 14334 | - sec->output_offset); | |
| aef36ac1 | 14335 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
| 8387904d AM |
14336 | if (dest != (bfd_vma) -1) |
| 14337 | { | |
| 14338 | relocation = dest; | |
| 14339 | addend = 0; | |
| bc30df16 | 14340 | reloc_dest = DEST_OPD; |
| 8387904d AM |
14341 | } |
| 14342 | } | |
| 14343 | ||
| b25116a9 AM |
14344 | /* If the branch is out of reach we ought to have a long |
| 14345 | branch stub. */ | |
| 14346 | from = (rel->r_offset | |
| 14347 | + input_section->output_offset | |
| 14348 | + input_section->output_section->vma); | |
| 14349 | ||
| 6911b7dc AM |
14350 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
| 14351 | ? fdh->elf.other | |
| 14352 | : sym->st_other); | |
| 14353 | ||
| 6abec6bc AM |
14354 | if (stub_entry != NULL |
| 14355 | && (stub_entry->stub_type == ppc_stub_long_branch | |
| 14356 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 14357 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
| 14358 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
| 14359 | || (relocation + addend - from + max_br_offset | |
| 14360 | < 2 * max_br_offset))) | |
| 14361 | /* Don't use the stub if this branch is in range. */ | |
| 14362 | stub_entry = NULL; | |
| b25116a9 AM |
14363 | |
| 14364 | if (stub_entry != NULL) | |
| 14365 | { | |
| 14366 | /* Munge up the value and addend so that we call the stub | |
| 14367 | rather than the procedure directly. */ | |
| a4b6fadd AM |
14368 | asection *stub_sec = stub_entry->group->stub_sec; |
| 14369 | ||
| 14370 | if (stub_entry->stub_type == ppc_stub_save_res) | |
| 14371 | relocation += (stub_sec->output_offset | |
| 14372 | + stub_sec->output_section->vma | |
| 14373 | + stub_sec->size - htab->sfpr->size | |
| 14374 | - htab->sfpr->output_offset | |
| 14375 | - htab->sfpr->output_section->vma); | |
| 14376 | else | |
| 14377 | relocation = (stub_entry->stub_offset | |
| 14378 | + stub_sec->output_offset | |
| 14379 | + stub_sec->output_section->vma); | |
| b25116a9 | 14380 | addend = 0; |
| bc30df16 | 14381 | reloc_dest = DEST_STUB; |
| 3b421ab3 | 14382 | |
| 954b63d4 | 14383 | if ((stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 AM |
14384 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) |
| 14385 | && (ALWAYS_EMIT_R2SAVE | |
| 14386 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 3b421ab3 AM |
14387 | && rel + 1 < relend |
| 14388 | && rel[1].r_offset == rel->r_offset + 4 | |
| 14389 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
| 14390 | relocation += 4; | |
| b25116a9 AM |
14391 | } |
| 14392 | ||
| 14393 | if (insn != 0) | |
| 14394 | { | |
| 794e51c0 | 14395 | if (is_isa_v2) |
| 721956f4 | 14396 | { |
| b25116a9 AM |
14397 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 14398 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 14399 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 14400 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 14401 | insn |= 0x02 << 21; | |
| 14402 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 14403 | insn |= 0x08 << 21; | |
| 14404 | else | |
| 14405 | break; | |
| 14406 | } | |
| 14407 | else | |
| 14408 | { | |
| 14409 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 14410 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 14411 | insn ^= 0x01 << 21; |
| 721956f4 | 14412 | } |
| b25116a9 | 14413 | |
| 95f0d0d2 | 14414 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 5bd4f169 | 14415 | } |
| e86ce104 | 14416 | |
| 06da1e8e AM |
14417 | /* NOP out calls to undefined weak functions. |
| 14418 | We can thus call a weak function without first | |
| 14419 | checking whether the function is defined. */ | |
| b25116a9 | 14420 | else if (h != NULL |
| 039b3fef | 14421 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 14422 | && h->elf.dynindx == -1 |
| b25116a9 AM |
14423 | && r_type == R_PPC64_REL24 |
| 14424 | && relocation == 0 | |
| 4cc603a5 | 14425 | && addend == 0) |
| e86ce104 | 14426 | { |
| 95f0d0d2 | 14427 | bfd_put_32 (input_bfd, NOP, contents + rel->r_offset); |
| c316a17c | 14428 | goto copy_reloc; |
| e86ce104 | 14429 | } |
| 65f38f15 AM |
14430 | break; |
| 14431 | } | |
| 5bd4f169 | 14432 | |
| 65f38f15 | 14433 | /* Set `addend'. */ |
| 411e1bfb | 14434 | tls_type = 0; |
| 65f38f15 AM |
14435 | switch (r_type) |
| 14436 | { | |
| 14437 | default: | |
| 25f53a85 | 14438 | info->callbacks->einfo |
| 695344c0 | 14439 | /* xgettext:c-format */ |
| bc30df16 | 14440 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
| d003868e | 14441 | input_bfd, (int) r_type, sym_name); |
| 5bd4f169 | 14442 | |
| 65f38f15 | 14443 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 14444 | ret = FALSE; |
| c316a17c | 14445 | goto copy_reloc; |
| 5bd4f169 | 14446 | |
| 65f38f15 | 14447 | case R_PPC64_NONE: |
| 411e1bfb | 14448 | case R_PPC64_TLS: |
| 727fc41e AM |
14449 | case R_PPC64_TLSGD: |
| 14450 | case R_PPC64_TLSLD: | |
| 3b421ab3 | 14451 | case R_PPC64_TOCSAVE: |
| 04c9666a AM |
14452 | case R_PPC64_GNU_VTINHERIT: |
| 14453 | case R_PPC64_GNU_VTENTRY: | |
| 006589cf | 14454 | case R_PPC64_ENTRY: |
| c316a17c | 14455 | goto copy_reloc; |
| 5bd4f169 AM |
14456 | |
| 14457 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 14458 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 14459 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 14460 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
14461 | case R_PPC64_GOT_TLSGD16: |
| 14462 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14463 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14464 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 14465 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
14466 | goto dogot; |
| 14467 | ||
| 14468 | case R_PPC64_GOT_TLSLD16: | |
| 14469 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14470 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14471 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 14472 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
14473 | goto dogot; |
| 14474 | ||
| 14475 | case R_PPC64_GOT_TPREL16_DS: | |
| 14476 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14477 | case R_PPC64_GOT_TPREL16_HI: | |
| 14478 | case R_PPC64_GOT_TPREL16_HA: | |
| 14479 | tls_type = TLS_TLS | TLS_TPREL; | |
| 14480 | goto dogot; | |
| 14481 | ||
| 14482 | case R_PPC64_GOT_DTPREL16_DS: | |
| 14483 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14484 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14485 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14486 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 14487 | goto dogot; | |
| 14488 | ||
| 65f38f15 AM |
14489 | case R_PPC64_GOT16: |
| 14490 | case R_PPC64_GOT16_LO: | |
| 14491 | case R_PPC64_GOT16_HI: | |
| 14492 | case R_PPC64_GOT16_HA: | |
| 14493 | case R_PPC64_GOT16_DS: | |
| 14494 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 14495 | dogot: |
| 5bd4f169 AM |
14496 | { |
| 14497 | /* Relocation is to the entry for this symbol in the global | |
| 14498 | offset table. */ | |
| e717da7e | 14499 | asection *got; |
| d881513a | 14500 | bfd_vma *offp; |
| 5bd4f169 | 14501 | bfd_vma off; |
| d881513a | 14502 | unsigned long indx = 0; |
| 927be08e | 14503 | struct got_entry *ent; |
| 65f38f15 | 14504 | |
| d881513a AM |
14505 | if (tls_type == (TLS_TLS | TLS_LD) |
| 14506 | && (h == NULL | |
| f5385ebf | 14507 | || !h->elf.def_dynamic)) |
| 927be08e | 14508 | ent = ppc64_tlsld_got (input_bfd); |
| 411e1bfb | 14509 | else |
| 5bd4f169 | 14510 | { |
| d881513a AM |
14511 | if (h != NULL) |
| 14512 | { | |
| f0158f44 AM |
14513 | if (!htab->elf.dynamic_sections_created |
| 14514 | || h->elf.dynindx == -1 | |
| 14515 | || SYMBOL_REFERENCES_LOCAL (info, &h->elf) | |
| 21d68fcd | 14516 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf)) |
| d881513a AM |
14517 | /* This is actually a static link, or it is a |
| 14518 | -Bsymbolic link and the symbol is defined | |
| 14519 | locally, or the symbol was forced to be local | |
| 14520 | because of a version file. */ | |
| 14521 | ; | |
| 14522 | else | |
| 14523 | { | |
| 039b3fef | 14524 | indx = h->elf.dynindx; |
| d881513a AM |
14525 | unresolved_reloc = FALSE; |
| 14526 | } | |
| 039b3fef | 14527 | ent = h->elf.got.glist; |
| d881513a | 14528 | } |
| 411e1bfb | 14529 | else |
| 5bd4f169 | 14530 | { |
| d881513a AM |
14531 | if (local_got_ents == NULL) |
| 14532 | abort (); | |
| 14533 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 14534 | } |
| d881513a AM |
14535 | |
| 14536 | for (; ent != NULL; ent = ent->next) | |
| 31c76678 | 14537 | if (ent->addend == orig_rel.r_addend |
| e717da7e | 14538 | && ent->owner == input_bfd |
| d881513a AM |
14539 | && ent->tls_type == tls_type) |
| 14540 | break; | |
| 5bd4f169 | 14541 | } |
| 411e1bfb | 14542 | |
| 927be08e AM |
14543 | if (ent == NULL) |
| 14544 | abort (); | |
| 14545 | if (ent->is_indirect) | |
| 14546 | ent = ent->got.ent; | |
| 14547 | offp = &ent->got.offset; | |
| 14548 | got = ppc64_elf_tdata (ent->owner)->got; | |
| e717da7e AM |
14549 | if (got == NULL) |
| 14550 | abort (); | |
| 14551 | ||
| 411e1bfb AM |
14552 | /* The offset must always be a multiple of 8. We use the |
| 14553 | least significant bit to record whether we have already | |
| 14554 | processed this entry. */ | |
| d881513a | 14555 | off = *offp; |
| 411e1bfb AM |
14556 | if ((off & 1) != 0) |
| 14557 | off &= ~1; | |
| 5bd4f169 AM |
14558 | else |
| 14559 | { | |
| 411e1bfb AM |
14560 | /* Generate relocs for the dynamic linker, except in |
| 14561 | the case of TLSLD where we'll use one entry per | |
| 14562 | module. */ | |
| 25f23106 AM |
14563 | asection *relgot; |
| 14564 | bfd_boolean ifunc; | |
| e717da7e | 14565 | |
| d881513a | 14566 | *offp = off | 1; |
| 25f23106 AM |
14567 | relgot = NULL; |
| 14568 | ifunc = (h != NULL | |
| 14569 | ? h->elf.type == STT_GNU_IFUNC | |
| 14570 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 19e08130 | 14571 | if (ifunc) |
| 82e66161 AM |
14572 | { |
| 14573 | relgot = htab->elf.irelplt; | |
| 14574 | if (indx == 0) | |
| 14575 | htab->local_ifunc_resolver = 1; | |
| 14576 | else if (is_static_defined (&h->elf)) | |
| 14577 | htab->maybe_local_ifunc_resolver = 1; | |
| 14578 | } | |
| f0158f44 AM |
14579 | else if (indx != 0 |
| 14580 | || (bfd_link_pic (info) | |
| 14581 | && (h == NULL | |
| 21d68fcd | 14582 | || !UNDEFWEAK_NO_DYNAMIC_RELOC (info, &h->elf) |
| f0158f44 AM |
14583 | || (tls_type == (TLS_TLS | TLS_LD) |
| 14584 | && !h->elf.def_dynamic)))) | |
| 19e08130 | 14585 | relgot = ppc64_elf_tdata (ent->owner)->relgot; |
| 25f23106 | 14586 | if (relgot != NULL) |
| 5bd4f169 | 14587 | { |
| e717da7e AM |
14588 | outrel.r_offset = (got->output_section->vma |
| 14589 | + got->output_offset | |
| 411e1bfb | 14590 | + off); |
| 4cc603a5 | 14591 | outrel.r_addend = addend; |
| d881513a | 14592 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 14593 | { |
| 411e1bfb | 14594 | outrel.r_addend = 0; |
| e515b051 | 14595 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
14596 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 14597 | { | |
| e717da7e AM |
14598 | loc = relgot->contents; |
| 14599 | loc += (relgot->reloc_count++ | |
| d881513a AM |
14600 | * sizeof (Elf64_External_Rela)); |
| 14601 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 14602 | &outrel, loc); | |
| e515b051 | 14603 | outrel.r_offset += 8; |
| 4cc603a5 | 14604 | outrel.r_addend = addend; |
| d881513a AM |
14605 | outrel.r_info |
| 14606 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 14607 | } |
| 411e1bfb | 14608 | } |
| 951fd09b | 14609 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 14610 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 14611 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 14612 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
14613 | else if (indx != 0) |
| 14614 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 14615 | else | |
| 81407a69 | 14616 | { |
| 25f23106 AM |
14617 | if (ifunc) |
| 14618 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14619 | else | |
| 14620 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
14621 | |
| 14622 | /* Write the .got section contents for the sake | |
| 14623 | of prelink. */ | |
| e717da7e | 14624 | loc = got->contents + off; |
| 23fbd6fa JJ |
14625 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 14626 | loc); | |
| 81407a69 | 14627 | } |
| 81407a69 AM |
14628 | |
| 14629 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
14630 | { |
| 14631 | outrel.r_addend += relocation; | |
| 14632 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| 989f9879 AM |
14633 | { |
| 14634 | if (htab->elf.tls_sec == NULL) | |
| 14635 | outrel.r_addend = 0; | |
| 14636 | else | |
| 14637 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
| 14638 | } | |
| e515b051 | 14639 | } |
| e717da7e AM |
14640 | loc = relgot->contents; |
| 14641 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
14642 | * sizeof (Elf64_External_Rela)); |
| 14643 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 14644 | } | |
| 14645 | ||
| ad8e1ba5 | 14646 | /* Init the .got section contents here if we're not |
| 81407a69 | 14647 | emitting a reloc. */ |
| d881513a | 14648 | else |
| 411e1bfb | 14649 | { |
| f0158f44 AM |
14650 | int tlsopt |
| 14651 | = (htab->params->tls_get_addr_opt | |
| 14652 | && htab->tls_get_addr_fd != NULL | |
| 14653 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
| 14654 | ||
| 4cc603a5 | 14655 | relocation += addend; |
| f0158f44 | 14656 | if (tls_type != 0) |
| 411e1bfb | 14657 | { |
| 989f9879 AM |
14658 | if (htab->elf.tls_sec == NULL) |
| 14659 | relocation = 0; | |
| 14660 | else | |
| 14661 | { | |
| f0158f44 AM |
14662 | if (tls_type & TLS_LD) |
| 14663 | relocation = 0; | |
| 14664 | else | |
| 14665 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 14666 | if ((tls_type & TLS_TPREL) | |
| 14667 | || (tlsopt && !(tls_type & TLS_DTPREL))) | |
| 989f9879 AM |
14668 | relocation += DTP_OFFSET - TP_OFFSET; |
| 14669 | } | |
| 5bd4f169 | 14670 | |
| f0158f44 | 14671 | if (tls_type & (TLS_GD | TLS_LD)) |
| 7b609f53 AM |
14672 | { |
| 14673 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 14674 | got->contents + off + 8); |
| f0158f44 | 14675 | relocation = !tlsopt; |
| 7b609f53 | 14676 | } |
| 411e1bfb AM |
14677 | } |
| 14678 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 14679 | got->contents + off); |
| 5bd4f169 AM |
14680 | } |
| 14681 | } | |
| 14682 | ||
| 65f38f15 AM |
14683 | if (off >= (bfd_vma) -2) |
| 14684 | abort (); | |
| 14685 | ||
| bf102f86 | 14686 | relocation = got->output_section->vma + got->output_offset + off; |
| 6f20ed8a | 14687 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
| 5bd4f169 | 14688 | } |
| 65f38f15 AM |
14689 | break; |
| 14690 | ||
| 14691 | case R_PPC64_PLT16_HA: | |
| 14692 | case R_PPC64_PLT16_HI: | |
| 14693 | case R_PPC64_PLT16_LO: | |
| 14694 | case R_PPC64_PLT32: | |
| 14695 | case R_PPC64_PLT64: | |
| 14696 | /* Relocation is to the entry for this symbol in the | |
| 14697 | procedure linkage table. */ | |
| cbf95972 AM |
14698 | { |
| 14699 | struct plt_entry **plt_list = NULL; | |
| 14700 | if (h != NULL) | |
| 14701 | plt_list = &h->elf.plt.plist; | |
| 14702 | else if (local_got_ents != NULL) | |
| 14703 | { | |
| 14704 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 14705 | (local_got_ents + symtab_hdr->sh_info); | |
| 14706 | unsigned char *local_got_tls_masks = (unsigned char *) | |
| 14707 | (local_plt + symtab_hdr->sh_info); | |
| 14708 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 14709 | plt_list = local_plt + r_symndx; | |
| 14710 | } | |
| 14711 | if (plt_list) | |
| 14712 | { | |
| 14713 | struct plt_entry *ent; | |
| 65f38f15 | 14714 | |
| cbf95972 AM |
14715 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
| 14716 | if (ent->plt.offset != (bfd_vma) -1 | |
| 14717 | && ent->addend == orig_rel.r_addend) | |
| 14718 | { | |
| 14719 | asection *plt; | |
| 14720 | ||
| 14721 | plt = htab->elf.splt; | |
| 14722 | if (!htab->elf.dynamic_sections_created | |
| 14723 | || h == NULL | |
| 14724 | || h->elf.dynindx == -1) | |
| 14725 | plt = htab->elf.iplt; | |
| 14726 | relocation = (plt->output_section->vma | |
| 14727 | + plt->output_offset | |
| 14728 | + ent->plt.offset); | |
| 14729 | addend = 0; | |
| 14730 | unresolved_reloc = FALSE; | |
| 14731 | break; | |
| 14732 | } | |
| 14733 | } | |
| 14734 | } | |
| 65f38f15 | 14735 | break; |
| 5bd4f169 | 14736 | |
| 0b13192e AM |
14737 | case R_PPC64_TOC: |
| 14738 | /* Relocation value is TOC base. */ | |
| 14739 | relocation = TOCstart; | |
| cf35638d | 14740 | if (r_symndx == STN_UNDEF) |
| 6f20ed8a | 14741 | relocation += htab->sec_info[input_section->id].toc_off; |
| 8517fae7 AM |
14742 | else if (unresolved_reloc) |
| 14743 | ; | |
| 6f20ed8a AM |
14744 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
| 14745 | relocation += htab->sec_info[sec->id].toc_off; | |
| 0b13192e AM |
14746 | else |
| 14747 | unresolved_reloc = TRUE; | |
| ab96bf03 | 14748 | goto dodyn; |
| 0b13192e | 14749 | |
| 5bd4f169 AM |
14750 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 14751 | which is the address of the start of the TOC plus 0x8000. | |
| 14752 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 14753 | in this order. */ | |
| 65f38f15 AM |
14754 | case R_PPC64_TOC16: |
| 14755 | case R_PPC64_TOC16_LO: | |
| 14756 | case R_PPC64_TOC16_HI: | |
| 14757 | case R_PPC64_TOC16_DS: | |
| 14758 | case R_PPC64_TOC16_LO_DS: | |
| 14759 | case R_PPC64_TOC16_HA: | |
| 6f20ed8a | 14760 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
| 5bd4f169 AM |
14761 | break; |
| 14762 | ||
| 14763 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
14764 | case R_PPC64_SECTOFF: |
| 14765 | case R_PPC64_SECTOFF_LO: | |
| 14766 | case R_PPC64_SECTOFF_HI: | |
| 14767 | case R_PPC64_SECTOFF_DS: | |
| 14768 | case R_PPC64_SECTOFF_LO_DS: | |
| 14769 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 14770 | if (sec != NULL) |
| 65f38f15 | 14771 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
14772 | break; |
| 14773 | ||
| 25f23106 AM |
14774 | case R_PPC64_REL16: |
| 14775 | case R_PPC64_REL16_LO: | |
| 14776 | case R_PPC64_REL16_HI: | |
| 14777 | case R_PPC64_REL16_HA: | |
| a680de9a | 14778 | case R_PPC64_REL16DX_HA: |
| 25f23106 AM |
14779 | break; |
| 14780 | ||
| 721956f4 AM |
14781 | case R_PPC64_REL14: |
| 14782 | case R_PPC64_REL14_BRNTAKEN: | |
| 14783 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
14784 | case R_PPC64_REL24: |
| 14785 | break; | |
| 14786 | ||
| 411e1bfb AM |
14787 | case R_PPC64_TPREL16: |
| 14788 | case R_PPC64_TPREL16_LO: | |
| 14789 | case R_PPC64_TPREL16_HI: | |
| 14790 | case R_PPC64_TPREL16_HA: | |
| 14791 | case R_PPC64_TPREL16_DS: | |
| 14792 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
14793 | case R_PPC64_TPREL16_HIGH: |
| 14794 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
14795 | case R_PPC64_TPREL16_HIGHER: |
| 14796 | case R_PPC64_TPREL16_HIGHERA: | |
| 14797 | case R_PPC64_TPREL16_HIGHEST: | |
| 14798 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
14799 | if (h != NULL |
| 14800 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 14801 | && h->elf.dynindx == -1) | |
| 14802 | { | |
| 14803 | /* Make this relocation against an undefined weak symbol | |
| 14804 | resolve to zero. This is really just a tweak, since | |
| 14805 | code using weak externs ought to check that they are | |
| 14806 | defined before using them. */ | |
| 14807 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 14808 | ||
| 95f0d0d2 | 14809 | insn = bfd_get_32 (input_bfd, p); |
| 766bc656 AM |
14810 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); |
| 14811 | if (insn != 0) | |
| 95f0d0d2 | 14812 | bfd_put_32 (input_bfd, insn, p); |
| 766bc656 AM |
14813 | break; |
| 14814 | } | |
| 989f9879 AM |
14815 | if (htab->elf.tls_sec != NULL) |
| 14816 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
| 0e1862bb | 14817 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
14818 | /* The TPREL16 relocs shouldn't really be used in shared |
| 14819 | libs as they will result in DT_TEXTREL being set, but | |
| 14820 | support them anyway. */ | |
| 14821 | goto dodyn; | |
| 14822 | break; | |
| 14823 | ||
| 14824 | case R_PPC64_DTPREL16: | |
| 14825 | case R_PPC64_DTPREL16_LO: | |
| 14826 | case R_PPC64_DTPREL16_HI: | |
| 14827 | case R_PPC64_DTPREL16_HA: | |
| 14828 | case R_PPC64_DTPREL16_DS: | |
| 14829 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
14830 | case R_PPC64_DTPREL16_HIGH: |
| 14831 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
14832 | case R_PPC64_DTPREL16_HIGHER: |
| 14833 | case R_PPC64_DTPREL16_HIGHERA: | |
| 14834 | case R_PPC64_DTPREL16_HIGHEST: | |
| 14835 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 989f9879 AM |
14836 | if (htab->elf.tls_sec != NULL) |
| 14837 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 411e1bfb AM |
14838 | break; |
| 14839 | ||
| 45965137 AM |
14840 | case R_PPC64_ADDR64_LOCAL: |
| 14841 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
| 14842 | ? h->elf.other | |
| 14843 | : sym->st_other); | |
| 14844 | break; | |
| 14845 | ||
| e515b051 AM |
14846 | case R_PPC64_DTPMOD64: |
| 14847 | relocation = 1; | |
| 14848 | addend = 0; | |
| 14849 | goto dodyn; | |
| 14850 | ||
| 411e1bfb | 14851 | case R_PPC64_TPREL64: |
| 989f9879 AM |
14852 | if (htab->elf.tls_sec != NULL) |
| 14853 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
| 411e1bfb AM |
14854 | goto dodyn; |
| 14855 | ||
| 14856 | case R_PPC64_DTPREL64: | |
| 989f9879 AM |
14857 | if (htab->elf.tls_sec != NULL) |
| 14858 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 1a0670f3 | 14859 | /* Fall through. */ |
| 411e1bfb | 14860 | |
| 65f38f15 AM |
14861 | /* Relocations that may need to be propagated if this is a |
| 14862 | dynamic object. */ | |
| 04c9666a | 14863 | case R_PPC64_REL30: |
| 65f38f15 AM |
14864 | case R_PPC64_REL32: |
| 14865 | case R_PPC64_REL64: | |
| 14866 | case R_PPC64_ADDR14: | |
| 14867 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 14868 | case R_PPC64_ADDR14_BRTAKEN: | |
| 14869 | case R_PPC64_ADDR16: | |
| 14870 | case R_PPC64_ADDR16_DS: | |
| 14871 | case R_PPC64_ADDR16_HA: | |
| 14872 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
14873 | case R_PPC64_ADDR16_HIGH: |
| 14874 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14875 | case R_PPC64_ADDR16_HIGHER: |
| 14876 | case R_PPC64_ADDR16_HIGHERA: | |
| 14877 | case R_PPC64_ADDR16_HIGHEST: | |
| 14878 | case R_PPC64_ADDR16_HIGHESTA: | |
| 14879 | case R_PPC64_ADDR16_LO: | |
| 14880 | case R_PPC64_ADDR16_LO_DS: | |
| 14881 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
14882 | case R_PPC64_ADDR32: |
| 14883 | case R_PPC64_ADDR64: | |
| 14884 | case R_PPC64_UADDR16: | |
| 14885 | case R_PPC64_UADDR32: | |
| 14886 | case R_PPC64_UADDR64: | |
| 411e1bfb | 14887 | dodyn: |
| 5d1634d7 | 14888 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
14889 | break; |
| 14890 | ||
| 41bd81ab AM |
14891 | if (NO_OPD_RELOCS && is_opd) |
| 14892 | break; | |
| 14893 | ||
| 8a9e8e72 | 14894 | if (bfd_link_pic (info) |
| b1b07054 AM |
14895 | ? ((h == NULL |
| 14896 | || h->dyn_relocs != NULL) | |
| 14897 | && ((h != NULL && pc_dynrelocs (h)) | |
| 14898 | || must_be_dyn_reloc (info, r_type))) | |
| 8a9e8e72 AM |
14899 | : (h != NULL |
| 14900 | ? h->dyn_relocs != NULL | |
| d311bc8b | 14901 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) |
| 65f38f15 | 14902 | { |
| b34976b6 | 14903 | bfd_boolean skip, relocate; |
| 65f38f15 | 14904 | asection *sreloc; |
| 1cf1f670 | 14905 | bfd_vma out_off; |
| 82e66161 | 14906 | long indx = 0; |
| 65f38f15 AM |
14907 | |
| 14908 | /* When generating a dynamic object, these relocations | |
| 14909 | are copied into the output file to be resolved at run | |
| 14910 | time. */ | |
| 14911 | ||
| b34976b6 AM |
14912 | skip = FALSE; |
| 14913 | relocate = FALSE; | |
| 65f38f15 | 14914 | |
| 1cf1f670 AM |
14915 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 14916 | input_section, rel->r_offset); | |
| 14917 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 14918 | skip = TRUE; |
| 1cf1f670 | 14919 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 14920 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
14921 | out_off += (input_section->output_section->vma |
| 14922 | + input_section->output_offset); | |
| 14923 | outrel.r_offset = out_off; | |
| 411e1bfb | 14924 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 14925 | |
| 1cf1f670 AM |
14926 | /* Optimize unaligned reloc use. */ |
| 14927 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 14928 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 14929 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 14930 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 14931 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 14932 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 14933 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 14934 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 14935 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 14936 | ||
| 65f38f15 | 14937 | if (skip) |
| 0bb2d96a | 14938 | memset (&outrel, 0, sizeof outrel); |
| afe397ea | 14939 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
| 0b13192e AM |
14940 | && !is_opd |
| 14941 | && r_type != R_PPC64_TOC) | |
| 14acf4dc | 14942 | { |
| 82e66161 AM |
14943 | indx = h->elf.dynindx; |
| 14944 | BFD_ASSERT (indx != -1); | |
| 14945 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 14acf4dc | 14946 | } |
| 65f38f15 AM |
14947 | else |
| 14948 | { | |
| 41bd81ab AM |
14949 | /* This symbol is local, or marked to become local, |
| 14950 | or this is an opd section reloc which must point | |
| 14951 | at a local function. */ | |
| 65f38f15 | 14952 | outrel.r_addend += relocation; |
| e86ce104 | 14953 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 14954 | { |
| 3fad3c7c | 14955 | if (is_opd && h != NULL) |
| afbe61cf AM |
14956 | { |
| 14957 | /* Lie about opd entries. This case occurs | |
| 14958 | when building shared libraries and we | |
| 14959 | reference a function in another shared | |
| 3fad3c7c AM |
14960 | lib. The same thing happens for a weak |
| 14961 | definition in an application that's | |
| 14962 | overridden by a strong definition in a | |
| 14963 | shared lib. (I believe this is a generic | |
| 14964 | bug in binutils handling of weak syms.) | |
| 14965 | In these cases we won't use the opd | |
| 1e2f5b6e | 14966 | entry in this lib. */ |
| b34976b6 | 14967 | unresolved_reloc = FALSE; |
| afbe61cf | 14968 | } |
| 25f23106 AM |
14969 | if (!is_opd |
| 14970 | && r_type == R_PPC64_ADDR64 | |
| 14971 | && (h != NULL | |
| 14972 | ? h->elf.type == STT_GNU_IFUNC | |
| 14973 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 14974 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14975 | else | |
| 14976 | { | |
| 14977 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 14978 | |
| 25f23106 AM |
14979 | /* We need to relocate .opd contents for ld.so. |
| 14980 | Prelink also wants simple and consistent rules | |
| 14981 | for relocs. This make all RELATIVE relocs have | |
| 14982 | *r_offset equal to r_addend. */ | |
| 14983 | relocate = TRUE; | |
| 14984 | } | |
| 65f38f15 AM |
14985 | } |
| 14986 | else | |
| 14987 | { | |
| 25f23106 AM |
14988 | if (h != NULL |
| 14989 | ? h->elf.type == STT_GNU_IFUNC | |
| 14990 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 14991 | { | |
| 25f53a85 | 14992 | info->callbacks->einfo |
| 695344c0 | 14993 | /* xgettext:c-format */ |
| 174d0a74 | 14994 | (_("%H: %s for indirect " |
| bc30df16 | 14995 | "function `%T' unsupported\n"), |
| 25f53a85 | 14996 | input_bfd, input_section, rel->r_offset, |
| 25f23106 AM |
14997 | ppc64_elf_howto_table[r_type]->name, |
| 14998 | sym_name); | |
| 14999 | ret = FALSE; | |
| 15000 | } | |
| cf35638d | 15001 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
15002 | ; |
| 15003 | else if (sec == NULL || sec->owner == NULL) | |
| 15004 | { | |
| 15005 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 15006 | return FALSE; |
| 65f38f15 AM |
15007 | } |
| 15008 | else | |
| 15009 | { | |
| 15010 | asection *osec; | |
| 15011 | ||
| 15012 | osec = sec->output_section; | |
| 15013 | indx = elf_section_data (osec)->dynindx; | |
| 15014 | ||
| 74541ad4 AM |
15015 | if (indx == 0) |
| 15016 | { | |
| 15017 | if ((osec->flags & SEC_READONLY) == 0 | |
| 15018 | && htab->elf.data_index_section != NULL) | |
| 15019 | osec = htab->elf.data_index_section; | |
| 15020 | else | |
| 15021 | osec = htab->elf.text_index_section; | |
| 15022 | indx = elf_section_data (osec)->dynindx; | |
| 15023 | } | |
| 15024 | BFD_ASSERT (indx != 0); | |
| 15025 | ||
| 65f38f15 AM |
15026 | /* We are turning this relocation into one |
| 15027 | against a section symbol, so subtract out | |
| 15028 | the output section's address but not the | |
| 15029 | offset of the input section in the output | |
| 15030 | section. */ | |
| 15031 | outrel.r_addend -= osec->vma; | |
| 15032 | } | |
| 15033 | ||
| 15034 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 15035 | } | |
| 15036 | } | |
| 15037 | ||
| 15038 | sreloc = elf_section_data (input_section)->sreloc; | |
| 19e08130 AM |
15039 | if (h != NULL |
| 15040 | ? h->elf.type == STT_GNU_IFUNC | |
| 15041 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 82e66161 AM |
15042 | { |
| 15043 | sreloc = htab->elf.irelplt; | |
| 15044 | if (indx == 0) | |
| 15045 | htab->local_ifunc_resolver = 1; | |
| 15046 | else if (is_static_defined (&h->elf)) | |
| 15047 | htab->maybe_local_ifunc_resolver = 1; | |
| 15048 | } | |
| 65f38f15 AM |
15049 | if (sreloc == NULL) |
| 15050 | abort (); | |
| 15051 | ||
| dfbb6ac9 AM |
15052 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 15053 | >= sreloc->size) | |
| 15054 | abort (); | |
| 947216bf AM |
15055 | loc = sreloc->contents; |
| 15056 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
15057 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 15058 | ||
| 15059 | /* If this reloc is against an external symbol, it will | |
| 15060 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
15061 | anything now. However, for the sake of prelink ensure |
| 15062 | that the section contents are a known value. */ | |
| 65f38f15 | 15063 | if (! relocate) |
| 81407a69 AM |
15064 | { |
| 15065 | unresolved_reloc = FALSE; | |
| 15066 | /* The value chosen here is quite arbitrary as ld.so | |
| 15067 | ignores section contents except for the special | |
| 15068 | case of .opd where the contents might be accessed | |
| 15069 | before relocation. Choose zero, as that won't | |
| 15070 | cause reloc overflow. */ | |
| 15071 | relocation = 0; | |
| 15072 | addend = 0; | |
| 15073 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 15074 | to improve backward compatibility with older | |
| 15075 | versions of ld. */ | |
| 15076 | if (r_type == R_PPC64_ADDR64) | |
| 15077 | addend = outrel.r_addend; | |
| 15078 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 15079 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| f0158f44 | 15080 | addend = outrel.r_offset; |
| 81407a69 | 15081 | } |
| 65f38f15 | 15082 | } |
| f0158f44 AM |
15083 | else if (r_type == R_PPC64_DTPMOD64 |
| 15084 | && htab->params->tls_get_addr_opt | |
| 15085 | && htab->tls_get_addr_fd != NULL | |
| 15086 | && htab->tls_get_addr_fd->elf.plt.plist != NULL) | |
| 15087 | { | |
| 15088 | /* Set up for __tls_get_addr_opt stub, when this entry | |
| 15089 | does not have dynamic relocs. */ | |
| 15090 | relocation = 0; | |
| 15091 | /* Set up the next word for local dynamic. If it turns | |
| 15092 | out to be global dynamic, the reloc will overwrite | |
| 15093 | this value. */ | |
| 15094 | if (rel->r_offset + 16 <= input_section->size) | |
| 15095 | bfd_put_64 (input_bfd, DTP_OFFSET - TP_OFFSET, | |
| 15096 | contents + rel->r_offset + 8); | |
| 15097 | } | |
| 15098 | else if (r_type == R_PPC64_DTPREL64 | |
| 15099 | && htab->params->tls_get_addr_opt | |
| 15100 | && htab->tls_get_addr_fd != NULL | |
| 15101 | && htab->tls_get_addr_fd->elf.plt.plist != NULL | |
| 15102 | && rel > relocs | |
| 15103 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 15104 | && rel[-1].r_offset + 8 == rel->r_offset) | |
| 15105 | { | |
| 15106 | /* __tls_get_addr_opt stub value. */ | |
| 15107 | addend += DTP_OFFSET - TP_OFFSET; | |
| 15108 | } | |
| 5bd4f169 AM |
15109 | break; |
| 15110 | ||
| 65f38f15 AM |
15111 | case R_PPC64_COPY: |
| 15112 | case R_PPC64_GLOB_DAT: | |
| 15113 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 15114 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
15115 | case R_PPC64_RELATIVE: |
| 15116 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 15117 | files. */ | |
| ae9a127f | 15118 | /* Fall through. */ |
| 65f38f15 AM |
15119 | |
| 15120 | case R_PPC64_PLTGOT16: | |
| 15121 | case R_PPC64_PLTGOT16_DS: | |
| 15122 | case R_PPC64_PLTGOT16_HA: | |
| 15123 | case R_PPC64_PLTGOT16_HI: | |
| 15124 | case R_PPC64_PLTGOT16_LO: | |
| 15125 | case R_PPC64_PLTGOT16_LO_DS: | |
| 15126 | case R_PPC64_PLTREL32: | |
| 15127 | case R_PPC64_PLTREL64: | |
| 15128 | /* These ones haven't been implemented yet. */ | |
| 15129 | ||
| 25f53a85 | 15130 | info->callbacks->einfo |
| 695344c0 | 15131 | /* xgettext:c-format */ |
| bc30df16 | 15132 | (_("%P: %B: %s is not supported for `%T'\n"), |
| d003868e | 15133 | input_bfd, |
| 4ce794b7 | 15134 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
15135 | |
| 15136 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 15137 | ret = FALSE; |
| c316a17c | 15138 | goto copy_reloc; |
| 65f38f15 | 15139 | } |
| 5bd4f169 | 15140 | |
| 67f0cbdb AM |
15141 | /* Multi-instruction sequences that access the TOC can be |
| 15142 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
| 15143 | to nop; addi rb,r2,x; */ | |
| 15144 | switch (r_type) | |
| 15145 | { | |
| 15146 | default: | |
| 15147 | break; | |
| 15148 | ||
| 15149 | case R_PPC64_GOT_TLSLD16_HI: | |
| 15150 | case R_PPC64_GOT_TLSGD16_HI: | |
| 15151 | case R_PPC64_GOT_TPREL16_HI: | |
| 15152 | case R_PPC64_GOT_DTPREL16_HI: | |
| 15153 | case R_PPC64_GOT16_HI: | |
| 15154 | case R_PPC64_TOC16_HI: | |
| 15155 | /* These relocs would only be useful if building up an | |
| 15156 | offset to later add to r2, perhaps in an indexed | |
| 15157 | addressing mode instruction. Don't try to optimize. | |
| 15158 | Unfortunately, the possibility of someone building up an | |
| 15159 | offset like this or even with the HA relocs, means that | |
| 15160 | we need to check the high insn when optimizing the low | |
| 15161 | insn. */ | |
| 15162 | break; | |
| 15163 | ||
| 15164 | case R_PPC64_GOT_TLSLD16_HA: | |
| 15165 | case R_PPC64_GOT_TLSGD16_HA: | |
| 15166 | case R_PPC64_GOT_TPREL16_HA: | |
| 15167 | case R_PPC64_GOT_DTPREL16_HA: | |
| 15168 | case R_PPC64_GOT16_HA: | |
| 15169 | case R_PPC64_TOC16_HA: | |
| 98528052 | 15170 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 15171 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 98528052 AM |
15172 | { |
| 15173 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 15174 | bfd_put_32 (input_bfd, NOP, p); | |
| 15175 | } | |
| 67f0cbdb AM |
15176 | break; |
| 15177 | ||
| 15178 | case R_PPC64_GOT_TLSLD16_LO: | |
| 15179 | case R_PPC64_GOT_TLSGD16_LO: | |
| 15180 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 15181 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 15182 | case R_PPC64_GOT16_LO: | |
| 15183 | case R_PPC64_GOT16_LO_DS: | |
| 15184 | case R_PPC64_TOC16_LO: | |
| 15185 | case R_PPC64_TOC16_LO_DS: | |
| 98528052 | 15186 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 15187 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 67f0cbdb AM |
15188 | { |
| 15189 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 15190 | insn = bfd_get_32 (input_bfd, p); | |
| 560c8763 AM |
15191 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
| 15192 | { | |
| 15193 | /* Transform addic to addi when we change reg. */ | |
| 15194 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
| 15195 | insn |= (14u << 26) | (2 << 16); | |
| 15196 | } | |
| 15197 | else | |
| 67f0cbdb | 15198 | { |
| 98528052 AM |
15199 | insn &= ~(0x1f << 16); |
| 15200 | insn |= 2 << 16; | |
| 67f0cbdb | 15201 | } |
| 560c8763 | 15202 | bfd_put_32 (input_bfd, insn, p); |
| 67f0cbdb AM |
15203 | } |
| 15204 | break; | |
| 15205 | } | |
| 15206 | ||
| 65f38f15 | 15207 | /* Do any further special processing. */ |
| b80eed39 | 15208 | howto = ppc64_elf_howto_table[(int) r_type]; |
| 65f38f15 AM |
15209 | switch (r_type) |
| 15210 | { | |
| 15211 | default: | |
| 15212 | break; | |
| 15213 | ||
| 25f23106 | 15214 | case R_PPC64_REL16_HA: |
| a680de9a | 15215 | case R_PPC64_REL16DX_HA: |
| f9c6b907 AM |
15216 | case R_PPC64_ADDR16_HA: |
| 15217 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
15218 | case R_PPC64_ADDR16_HIGHERA: |
| 15219 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
15220 | case R_PPC64_TOC16_HA: |
| 15221 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb | 15222 | case R_PPC64_TPREL16_HA: |
| f9c6b907 | 15223 | case R_PPC64_TPREL16_HIGHA: |
| 411e1bfb | 15224 | case R_PPC64_TPREL16_HIGHERA: |
| 411e1bfb | 15225 | case R_PPC64_TPREL16_HIGHESTA: |
| f9c6b907 AM |
15226 | case R_PPC64_DTPREL16_HA: |
| 15227 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb | 15228 | case R_PPC64_DTPREL16_HIGHERA: |
| 411e1bfb | 15229 | case R_PPC64_DTPREL16_HIGHESTA: |
| 65f38f15 AM |
15230 | /* It's just possible that this symbol is a weak symbol |
| 15231 | that's not actually defined anywhere. In that case, | |
| 15232 | 'sec' would be NULL, and we should leave the symbol | |
| 15233 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
15234 | if (sec == NULL) |
| 15235 | break; | |
| 1a0670f3 | 15236 | /* Fall through. */ |
| 5c5f6e17 AM |
15237 | |
| 15238 | case R_PPC64_GOT16_HA: | |
| 15239 | case R_PPC64_PLTGOT16_HA: | |
| 15240 | case R_PPC64_PLT16_HA: | |
| 15241 | case R_PPC64_GOT_TLSGD16_HA: | |
| 15242 | case R_PPC64_GOT_TLSLD16_HA: | |
| 15243 | case R_PPC64_GOT_TPREL16_HA: | |
| 15244 | case R_PPC64_GOT_DTPREL16_HA: | |
| 15245 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 15246 | Bits 0:15 are not used. */ | |
| 15247 | addend += 0x8000; | |
| 65f38f15 AM |
15248 | break; |
| 15249 | ||
| 15250 | case R_PPC64_ADDR16_DS: | |
| 15251 | case R_PPC64_ADDR16_LO_DS: | |
| 15252 | case R_PPC64_GOT16_DS: | |
| 15253 | case R_PPC64_GOT16_LO_DS: | |
| 15254 | case R_PPC64_PLT16_LO_DS: | |
| 15255 | case R_PPC64_SECTOFF_DS: | |
| 15256 | case R_PPC64_SECTOFF_LO_DS: | |
| 15257 | case R_PPC64_TOC16_DS: | |
| 15258 | case R_PPC64_TOC16_LO_DS: | |
| 15259 | case R_PPC64_PLTGOT16_DS: | |
| 15260 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
15261 | case R_PPC64_GOT_TPREL16_DS: |
| 15262 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 15263 | case R_PPC64_GOT_DTPREL16_DS: | |
| 15264 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 15265 | case R_PPC64_TPREL16_DS: | |
| 15266 | case R_PPC64_TPREL16_LO_DS: | |
| 15267 | case R_PPC64_DTPREL16_DS: | |
| 15268 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
15269 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 15270 | mask = 3; | |
| a680de9a PB |
15271 | /* If this reloc is against an lq, lxv, or stxv insn, then |
| 15272 | the value must be a multiple of 16. This is somewhat of | |
| 15273 | a hack, but the "correct" way to do this by defining _DQ | |
| 15274 | forms of all the _DS relocs bloats all reloc switches in | |
| 15275 | this file. It doesn't make much sense to use these | |
| 15276 | relocs in data, so testing the insn should be safe. */ | |
| 15277 | if ((insn & (0x3f << 26)) == (56u << 26) | |
| 15278 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
| adadcc0c | 15279 | mask = 15; |
| a680de9a PB |
15280 | relocation += addend; |
| 15281 | addend = insn & (mask ^ 3); | |
| 15282 | if ((relocation & mask) != 0) | |
| 65f38f15 | 15283 | { |
| a680de9a | 15284 | relocation ^= relocation & mask; |
| 25f53a85 | 15285 | info->callbacks->einfo |
| 695344c0 | 15286 | /* xgettext:c-format */ |
| 174d0a74 | 15287 | (_("%H: error: %s not a multiple of %u\n"), |
| 25f53a85 | 15288 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 15289 | howto->name, |
| adadcc0c | 15290 | mask + 1); |
| 65f38f15 | 15291 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 15292 | ret = FALSE; |
| c316a17c | 15293 | goto copy_reloc; |
| 65f38f15 AM |
15294 | } |
| 15295 | break; | |
| 5bd4f169 AM |
15296 | } |
| 15297 | ||
| 239e1f3a AM |
15298 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 15299 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 15300 | not process them. */ | |
| 65f38f15 | 15301 | if (unresolved_reloc |
| 239e1f3a | 15302 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 1d5316ab AM |
15303 | && h->elf.def_dynamic) |
| 15304 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 15305 | rel->r_offset) != (bfd_vma) -1) | |
| 9c07fe7c | 15306 | { |
| 25f53a85 | 15307 | info->callbacks->einfo |
| 695344c0 | 15308 | /* xgettext:c-format */ |
| 174d0a74 | 15309 | (_("%H: unresolvable %s against `%T'\n"), |
| 25f53a85 | 15310 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 15311 | howto->name, |
| 039b3fef | 15312 | h->elf.root.root.string); |
| b34976b6 | 15313 | ret = FALSE; |
| 9c07fe7c | 15314 | } |
| 5bd4f169 | 15315 | |
| b80eed39 AM |
15316 | /* 16-bit fields in insns mostly have signed values, but a |
| 15317 | few insns have 16-bit unsigned values. Really, we should | |
| 15318 | have different reloc types. */ | |
| 15319 | if (howto->complain_on_overflow != complain_overflow_dont | |
| 15320 | && howto->dst_mask == 0xffff | |
| 15321 | && (input_section->flags & SEC_CODE) != 0) | |
| 15322 | { | |
| 15323 | enum complain_overflow complain = complain_overflow_signed; | |
| 15324 | ||
| 15325 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
| a47622ac AM |
15326 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
| 15327 | complain = complain_overflow_bitfield; | |
| 15328 | else if (howto->rightshift == 0 | |
| 15329 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
| 15330 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
| 15331 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
| 15332 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
| 15333 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
| 15334 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
| b80eed39 AM |
15335 | complain = complain_overflow_unsigned; |
| 15336 | if (howto->complain_on_overflow != complain) | |
| 15337 | { | |
| 15338 | alt_howto = *howto; | |
| 15339 | alt_howto.complain_on_overflow = complain; | |
| 15340 | howto = &alt_howto; | |
| 15341 | } | |
| 15342 | } | |
| 15343 | ||
| a680de9a PB |
15344 | if (r_type == R_PPC64_REL16DX_HA) |
| 15345 | { | |
| 15346 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
| 15347 | if (rel->r_offset + 4 > input_section->size) | |
| 15348 | r = bfd_reloc_outofrange; | |
| 15349 | else | |
| 15350 | { | |
| 15351 | relocation += addend; | |
| 15352 | relocation -= (rel->r_offset | |
| 15353 | + input_section->output_offset | |
| 15354 | + input_section->output_section->vma); | |
| 3de43e7b | 15355 | relocation = (bfd_signed_vma) relocation >> 16; |
| a680de9a PB |
15356 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); |
| 15357 | insn &= ~0x1fffc1; | |
| 3de43e7b | 15358 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); |
| a680de9a PB |
15359 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); |
| 15360 | r = bfd_reloc_ok; | |
| 3de43e7b | 15361 | if (relocation + 0x8000 > 0xffff) |
| a680de9a PB |
15362 | r = bfd_reloc_overflow; |
| 15363 | } | |
| 15364 | } | |
| 15365 | else | |
| 15366 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
| 15367 | rel->r_offset, relocation, addend); | |
| 5bd4f169 | 15368 | |
| ef60b7ff | 15369 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 15370 | { |
| bc30df16 | 15371 | char *more_info = NULL; |
| b80eed39 | 15372 | const char *reloc_name = howto->name; |
| bc30df16 AM |
15373 | |
| 15374 | if (reloc_dest != DEST_NORMAL) | |
| 15375 | { | |
| 15376 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
| 15377 | if (more_info != NULL) | |
| 15378 | { | |
| 15379 | strcpy (more_info, reloc_name); | |
| 15380 | strcat (more_info, (reloc_dest == DEST_OPD | |
| 15381 | ? " (OPD)" : " (stub)")); | |
| 15382 | reloc_name = more_info; | |
| 15383 | } | |
| 15384 | } | |
| 15385 | ||
| cd27b276 | 15386 | if (r == bfd_reloc_overflow) |
| 5bd4f169 | 15387 | { |
| 8131c122 AM |
15388 | /* On code like "if (foo) foo();" don't report overflow |
| 15389 | on a branch to zero when foo is undefined. */ | |
| 15390 | if (!warned | |
| 15391 | && (reloc_dest == DEST_STUB | |
| 15392 | || !(h != NULL | |
| 15393 | && (h->elf.root.type == bfd_link_hash_undefweak | |
| 15394 | || h->elf.root.type == bfd_link_hash_undefined) | |
| 15395 | && is_branch_reloc (r_type)))) | |
| 1a72702b AM |
15396 | info->callbacks->reloc_overflow (info, &h->elf.root, |
| 15397 | sym_name, reloc_name, | |
| 15398 | orig_rel.r_addend, | |
| 15399 | input_bfd, input_section, | |
| 15400 | rel->r_offset); | |
| ef60b7ff AM |
15401 | } |
| 15402 | else | |
| 15403 | { | |
| 25f53a85 | 15404 | info->callbacks->einfo |
| 695344c0 | 15405 | /* xgettext:c-format */ |
| 174d0a74 | 15406 | (_("%H: %s against `%T': error %d\n"), |
| 25f53a85 | 15407 | input_bfd, input_section, rel->r_offset, |
| bc30df16 | 15408 | reloc_name, sym_name, (int) r); |
| b34976b6 | 15409 | ret = FALSE; |
| ef60b7ff | 15410 | } |
| bc30df16 AM |
15411 | if (more_info != NULL) |
| 15412 | free (more_info); | |
| 5bd4f169 | 15413 | } |
| c316a17c AM |
15414 | copy_reloc: |
| 15415 | if (wrel != rel) | |
| 15416 | *wrel = *rel; | |
| 15417 | } | |
| 15418 | ||
| 15419 | if (wrel != rel) | |
| 15420 | { | |
| 15421 | Elf_Internal_Shdr *rel_hdr; | |
| 15422 | size_t deleted = rel - wrel; | |
| 15423 | ||
| 15424 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
| 15425 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
| 15426 | if (rel_hdr->sh_size == 0) | |
| 15427 | { | |
| 15428 | /* It is too late to remove an empty reloc section. Leave | |
| 15429 | one NONE reloc. | |
| 15430 | ??? What is wrong with an empty section??? */ | |
| 15431 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
| 15432 | deleted -= 1; | |
| 15433 | } | |
| 15434 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
| 15435 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
| 15436 | input_section->reloc_count -= deleted; | |
| 5bd4f169 AM |
15437 | } |
| 15438 | ||
| 645ea6a9 AM |
15439 | /* If we're emitting relocations, then shortly after this function |
| 15440 | returns, reloc offsets and addends for this section will be | |
| 15441 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
15442 | file rather than the input. Save a copy of the relocs for |
| 15443 | opd_entry_value. */ | |
| 0e1862bb | 15444 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
| 8860955f AM |
15445 | { |
| 15446 | bfd_size_type amt; | |
| 15447 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 15448 | rel = bfd_alloc (input_bfd, amt); | |
| 729eabd5 AM |
15449 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
| 15450 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
| 8860955f AM |
15451 | if (rel == NULL) |
| 15452 | return FALSE; | |
| 15453 | memcpy (rel, relocs, amt); | |
| 15454 | } | |
| 5bd4f169 AM |
15455 | return ret; |
| 15456 | } | |
| 15457 | ||
| 754021d0 AM |
15458 | /* Adjust the value of any local symbols in opd sections. */ |
| 15459 | ||
| 6e0b88f1 | 15460 | static int |
| 754021d0 AM |
15461 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 15462 | const char *name ATTRIBUTE_UNUSED, | |
| 15463 | Elf_Internal_Sym *elfsym, | |
| 15464 | asection *input_sec, | |
| 15465 | struct elf_link_hash_entry *h) | |
| 15466 | { | |
| 74f0fb50 AM |
15467 | struct _opd_sec_data *opd; |
| 15468 | long adjust; | |
| 754021d0 AM |
15469 | bfd_vma value; |
| 15470 | ||
| 4025353c | 15471 | if (h != NULL) |
| 6e0b88f1 | 15472 | return 1; |
| 4025353c | 15473 | |
| 74f0fb50 AM |
15474 | opd = get_opd_info (input_sec); |
| 15475 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 15476 | return 1; |
| 754021d0 AM |
15477 | |
| 15478 | value = elfsym->st_value - input_sec->output_offset; | |
| 0e1862bb | 15479 | if (!bfd_link_relocatable (info)) |
| 754021d0 AM |
15480 | value -= input_sec->output_section->vma; |
| 15481 | ||
| 51aecdc5 | 15482 | adjust = opd->adjust[OPD_NDX (value)]; |
| 4025353c | 15483 | if (adjust == -1) |
| 6e0b88f1 AM |
15484 | return 2; |
| 15485 | ||
| 15486 | elfsym->st_value += adjust; | |
| 15487 | return 1; | |
| 754021d0 AM |
15488 | } |
| 15489 | ||
| 5bd4f169 AM |
15490 | /* Finish up dynamic symbol handling. We set the contents of various |
| 15491 | dynamic sections here. */ | |
| 15492 | ||
| b34976b6 | 15493 | static bfd_boolean |
| 4ce794b7 AM |
15494 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 15495 | struct bfd_link_info *info, | |
| 15496 | struct elf_link_hash_entry *h, | |
| 4aef7643 | 15497 | Elf_Internal_Sym *sym) |
| 5bd4f169 | 15498 | { |
| 65f38f15 | 15499 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
15500 | struct plt_entry *ent; |
| 15501 | Elf_Internal_Rela rela; | |
| 15502 | bfd_byte *loc; | |
| 5bd4f169 | 15503 | |
| 65f38f15 | 15504 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
15505 | if (htab == NULL) |
| 15506 | return FALSE; | |
| 5bd4f169 | 15507 | |
| 8387904d AM |
15508 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 15509 | if (ent->plt.offset != (bfd_vma) -1) | |
| 15510 | { | |
| 15511 | /* This symbol has an entry in the procedure linkage | |
| 15512 | table. Set it up. */ | |
| e054468f AM |
15513 | if (!htab->elf.dynamic_sections_created |
| 15514 | || h->dynindx == -1) | |
| 15515 | { | |
| 15516 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 15517 | && h->def_regular | |
| 15518 | && (h->root.type == bfd_link_hash_defined | |
| 15519 | || h->root.type == bfd_link_hash_defweak)); | |
| 33e44f2e AM |
15520 | rela.r_offset = (htab->elf.iplt->output_section->vma |
| 15521 | + htab->elf.iplt->output_offset | |
| 25f23106 | 15522 | + ent->plt.offset); |
| ee67d69a AM |
15523 | if (htab->opd_abi) |
| 15524 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 15525 | else | |
| 15526 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
15527 | rela.r_addend = (h->root.u.def.value |
| 15528 | + h->root.u.def.section->output_offset | |
| 15529 | + h->root.u.def.section->output_section->vma | |
| 15530 | + ent->addend); | |
| 33e44f2e AM |
15531 | loc = (htab->elf.irelplt->contents |
| 15532 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 | 15533 | * sizeof (Elf64_External_Rela))); |
| 82e66161 | 15534 | htab->local_ifunc_resolver = 1; |
| e054468f AM |
15535 | } |
| 15536 | else | |
| 15537 | { | |
| 33e44f2e AM |
15538 | rela.r_offset = (htab->elf.splt->output_section->vma |
| 15539 | + htab->elf.splt->output_offset | |
| 25f23106 | 15540 | + ent->plt.offset); |
| e054468f AM |
15541 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 15542 | rela.r_addend = ent->addend; | |
| 33e44f2e | 15543 | loc = (htab->elf.srelplt->contents |
| b9e5796b AM |
15544 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 15545 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
| 82e66161 AM |
15546 | if (h->type == STT_GNU_IFUNC && is_static_defined (h)) |
| 15547 | htab->maybe_local_ifunc_resolver = 1; | |
| e054468f | 15548 | } |
| 8387904d | 15549 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| a345bc8d AM |
15550 | |
| 15551 | if (!htab->opd_abi) | |
| 15552 | { | |
| 15553 | if (!h->def_regular) | |
| 15554 | { | |
| 15555 | /* Mark the symbol as undefined, rather than as | |
| 15556 | defined in glink. Leave the value if there were | |
| 15557 | any relocations where pointer equality matters | |
| 15558 | (this is a clue for the dynamic linker, to make | |
| 15559 | function pointer comparisons work between an | |
| 15560 | application and shared library), otherwise set it | |
| 15561 | to zero. */ | |
| 15562 | sym->st_shndx = SHN_UNDEF; | |
| 15563 | if (!h->pointer_equality_needed) | |
| 15564 | sym->st_value = 0; | |
| 15565 | else if (!h->ref_regular_nonweak) | |
| 15566 | { | |
| 15567 | /* This breaks function pointer comparisons, but | |
| 15568 | that is better than breaking tests for a NULL | |
| 15569 | function pointer. */ | |
| 15570 | sym->st_value = 0; | |
| 15571 | } | |
| 15572 | } | |
| 15573 | } | |
| 8387904d | 15574 | } |
| 5bd4f169 | 15575 | |
| f5385ebf | 15576 | if (h->needs_copy) |
| 5bd4f169 | 15577 | { |
| 65f38f15 | 15578 | /* This symbol needs a copy reloc. Set it up. */ |
| 5474d94f | 15579 | asection *srel; |
| 5bd4f169 | 15580 | |
| 65f38f15 AM |
15581 | if (h->dynindx == -1 |
| 15582 | || (h->root.type != bfd_link_hash_defined | |
| 15583 | && h->root.type != bfd_link_hash_defweak) | |
| 5474d94f AM |
15584 | || htab->elf.srelbss == NULL |
| 15585 | || htab->elf.sreldynrelro == NULL) | |
| 65f38f15 | 15586 | abort (); |
| 5bd4f169 AM |
15587 | |
| 15588 | rela.r_offset = (h->root.u.def.value | |
| 15589 | + h->root.u.def.section->output_section->vma | |
| 15590 | + h->root.u.def.section->output_offset); | |
| 15591 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 15592 | rela.r_addend = 0; | |
| afbf7e8e | 15593 | if (h->root.u.def.section == htab->elf.sdynrelro) |
| 5474d94f AM |
15594 | srel = htab->elf.sreldynrelro; |
| 15595 | else | |
| 15596 | srel = htab->elf.srelbss; | |
| 15597 | loc = srel->contents; | |
| 15598 | loc += srel->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 15599 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
15600 | } |
| 15601 | ||
| b34976b6 | 15602 | return TRUE; |
| 5bd4f169 AM |
15603 | } |
| 15604 | ||
| 65f38f15 AM |
15605 | /* Used to decide how to sort relocs in an optimal manner for the |
| 15606 | dynamic linker, before writing them out. */ | |
| 15607 | ||
| 15608 | static enum elf_reloc_type_class | |
| 7e612e98 AM |
15609 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
| 15610 | const asection *rel_sec, | |
| 15611 | const Elf_Internal_Rela *rela) | |
| 65f38f15 | 15612 | { |
| 04c9666a | 15613 | enum elf_ppc64_reloc_type r_type; |
| 7e612e98 AM |
15614 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 15615 | ||
| 33e44f2e | 15616 | if (rel_sec == htab->elf.irelplt) |
| 7e612e98 | 15617 | return reloc_class_ifunc; |
| a33d1f77 | 15618 | |
| 4ce794b7 | 15619 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 15620 | switch (r_type) |
| 65f38f15 AM |
15621 | { |
| 15622 | case R_PPC64_RELATIVE: | |
| 15623 | return reloc_class_relative; | |
| 15624 | case R_PPC64_JMP_SLOT: | |
| 15625 | return reloc_class_plt; | |
| 15626 | case R_PPC64_COPY: | |
| 15627 | return reloc_class_copy; | |
| 15628 | default: | |
| 15629 | return reloc_class_normal; | |
| 15630 | } | |
| 15631 | } | |
| 15632 | ||
| 5bd4f169 AM |
15633 | /* Finish up the dynamic sections. */ |
| 15634 | ||
| b34976b6 | 15635 | static bfd_boolean |
| 4ce794b7 AM |
15636 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 15637 | struct bfd_link_info *info) | |
| 5bd4f169 | 15638 | { |
| 65f38f15 AM |
15639 | struct ppc_link_hash_table *htab; |
| 15640 | bfd *dynobj; | |
| 5bd4f169 | 15641 | asection *sdyn; |
| 5bd4f169 | 15642 | |
| 65f38f15 | 15643 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
15644 | if (htab == NULL) |
| 15645 | return FALSE; | |
| 15646 | ||
| 65f38f15 | 15647 | dynobj = htab->elf.dynobj; |
| 3d4d4302 | 15648 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5bd4f169 | 15649 | |
| 65f38f15 | 15650 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 15651 | { |
| 5bd4f169 AM |
15652 | Elf64_External_Dyn *dyncon, *dynconend; |
| 15653 | ||
| 33e44f2e | 15654 | if (sdyn == NULL || htab->elf.sgot == NULL) |
| 65f38f15 | 15655 | abort (); |
| 5bd4f169 AM |
15656 | |
| 15657 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 15658 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
15659 | for (; dyncon < dynconend; dyncon++) |
| 15660 | { | |
| 15661 | Elf_Internal_Dyn dyn; | |
| 19397422 | 15662 | asection *s; |
| 5bd4f169 AM |
15663 | |
| 15664 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 15665 | ||
| 15666 | switch (dyn.d_tag) | |
| 15667 | { | |
| 65f38f15 AM |
15668 | default: |
| 15669 | continue; | |
| 5bd4f169 | 15670 | |
| 5d1634d7 | 15671 | case DT_PPC64_GLINK: |
| 4ce794b7 | 15672 | s = htab->glink; |
| 6348e046 | 15673 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
15674 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 15675 | of glink rather than the first entry point, which is | |
| 15676 | what ld.so needs, and now have a bigger stub to | |
| 15677 | support automatic multiple TOCs. */ | |
| b9e5796b | 15678 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
| 5d1634d7 AM |
15679 | break; |
| 15680 | ||
| 19397422 AM |
15681 | case DT_PPC64_OPD: |
| 15682 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
15683 | if (s == NULL) |
| 15684 | continue; | |
| 15685 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
15686 | break; |
| 15687 | ||
| e8910a83 AM |
15688 | case DT_PPC64_OPT: |
| 15689 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
| 15690 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
| f378ab09 AM |
15691 | if (htab->has_plt_localentry0) |
| 15692 | dyn.d_un.d_val |= PPC64_OPT_LOCALENTRY; | |
| e8910a83 AM |
15693 | break; |
| 15694 | ||
| 19397422 AM |
15695 | case DT_PPC64_OPDSZ: |
| 15696 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
15697 | if (s == NULL) |
| 15698 | continue; | |
| eea6121a | 15699 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
15700 | break; |
| 15701 | ||
| 65f38f15 | 15702 | case DT_PLTGOT: |
| 33e44f2e | 15703 | s = htab->elf.splt; |
| 6348e046 | 15704 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
15705 | break; |
| 15706 | ||
| 15707 | case DT_JMPREL: | |
| 33e44f2e | 15708 | s = htab->elf.srelplt; |
| 6348e046 | 15709 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 15710 | break; |
| 5bd4f169 | 15711 | |
| 65f38f15 | 15712 | case DT_PLTRELSZ: |
| 33e44f2e | 15713 | dyn.d_un.d_val = htab->elf.srelplt->size; |
| 5d1634d7 | 15714 | break; |
| 82e66161 AM |
15715 | |
| 15716 | case DT_TEXTREL: | |
| 15717 | if (htab->local_ifunc_resolver) | |
| 15718 | info->callbacks->einfo | |
| 15719 | (_("%X%P: text relocations and GNU indirect " | |
| 15720 | "functions will result in a segfault at runtime\n")); | |
| 15721 | else if (htab->maybe_local_ifunc_resolver) | |
| 15722 | info->callbacks->einfo | |
| 15723 | (_("%P: warning: text relocations and GNU indirect " | |
| 15724 | "functions may result in a segfault at runtime\n")); | |
| 15725 | continue; | |
| 5bd4f169 | 15726 | } |
| 5bd4f169 | 15727 | |
| 65f38f15 | 15728 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 15729 | } |
| 5bd4f169 AM |
15730 | } |
| 15731 | ||
| 6528b6eb AM |
15732 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0 |
| 15733 | && htab->elf.sgot->output_section != bfd_abs_section_ptr) | |
| 5d1634d7 AM |
15734 | { |
| 15735 | /* Fill in the first entry in the global offset table. | |
| 15736 | We use it to hold the link-time TOCbase. */ | |
| 15737 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 15738 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 33e44f2e | 15739 | htab->elf.sgot->contents); |
| 5d1634d7 AM |
15740 | |
| 15741 | /* Set .got entry size. */ | |
| 33e44f2e | 15742 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
15743 | } |
| 15744 | ||
| 6528b6eb AM |
15745 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0 |
| 15746 | && htab->elf.splt->output_section != bfd_abs_section_ptr) | |
| 5d1634d7 AM |
15747 | { |
| 15748 | /* Set .plt entry size. */ | |
| 33e44f2e | 15749 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
| b9e5796b | 15750 | = PLT_ENTRY_SIZE (htab); |
| 5d1634d7 AM |
15751 | } |
| 15752 | ||
| 84f5d08e AM |
15753 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 15754 | brlt ourselves if emitrelocations. */ | |
| 15755 | if (htab->brlt != NULL | |
| 15756 | && htab->brlt->reloc_count != 0 | |
| 15757 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15758 | htab->brlt, | |
| d4730f92 | 15759 | elf_section_data (htab->brlt)->rela.hdr, |
| 84f5d08e AM |
15760 | elf_section_data (htab->brlt)->relocs, |
| 15761 | NULL)) | |
| 15762 | return FALSE; | |
| 15763 | ||
| 176a0d42 AM |
15764 | if (htab->glink != NULL |
| 15765 | && htab->glink->reloc_count != 0 | |
| 15766 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15767 | htab->glink, | |
| d4730f92 | 15768 | elf_section_data (htab->glink)->rela.hdr, |
| 176a0d42 AM |
15769 | elf_section_data (htab->glink)->relocs, |
| 15770 | NULL)) | |
| 15771 | return FALSE; | |
| 15772 | ||
| 58d180e8 | 15773 | if (htab->glink_eh_frame != NULL |
| da44f4e5 AM |
15774 | && htab->glink_eh_frame->size != 0) |
| 15775 | { | |
| 15776 | bfd_vma val; | |
| 15777 | bfd_byte *p; | |
| 15778 | asection *stub_sec; | |
| 2e0ce1c8 | 15779 | size_t align = 4; |
| da44f4e5 | 15780 | |
| 2e0ce1c8 AM |
15781 | p = htab->glink_eh_frame->contents; |
| 15782 | p += (sizeof (glink_eh_frame_cie) + align - 1) & -align; | |
| da44f4e5 AM |
15783 | for (stub_sec = htab->params->stub_bfd->sections; |
| 15784 | stub_sec != NULL; | |
| 15785 | stub_sec = stub_sec->next) | |
| 15786 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 15787 | { | |
| 15788 | /* FDE length. */ | |
| 15789 | p += 4; | |
| 15790 | /* CIE pointer. */ | |
| 15791 | p += 4; | |
| 15792 | /* Offset to stub section. */ | |
| 15793 | val = (stub_sec->output_section->vma | |
| 15794 | + stub_sec->output_offset); | |
| 15795 | val -= (htab->glink_eh_frame->output_section->vma | |
| 15796 | + htab->glink_eh_frame->output_offset | |
| 15797 | + (p - htab->glink_eh_frame->contents)); | |
| 15798 | if (val + 0x80000000 > 0xffffffff) | |
| 15799 | { | |
| 15800 | info->callbacks->einfo | |
| 15801 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
| 15802 | stub_sec->name); | |
| 15803 | return FALSE; | |
| 15804 | } | |
| 15805 | bfd_put_32 (dynobj, val, p); | |
| 15806 | p += 4; | |
| 15807 | /* stub section size. */ | |
| 15808 | p += 4; | |
| 15809 | /* Augmentation. */ | |
| 15810 | p += 1; | |
| 15811 | /* Pad. */ | |
| 2e0ce1c8 | 15812 | p += ((17 + align - 1) & -align) - 17; |
| da44f4e5 AM |
15813 | } |
| 15814 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 15815 | { | |
| 15816 | /* FDE length. */ | |
| 15817 | p += 4; | |
| 15818 | /* CIE pointer. */ | |
| 15819 | p += 4; | |
| 15820 | /* Offset to .glink. */ | |
| 15821 | val = (htab->glink->output_section->vma | |
| 15822 | + htab->glink->output_offset | |
| 15823 | + 8); | |
| 15824 | val -= (htab->glink_eh_frame->output_section->vma | |
| 15825 | + htab->glink_eh_frame->output_offset | |
| 15826 | + (p - htab->glink_eh_frame->contents)); | |
| 15827 | if (val + 0x80000000 > 0xffffffff) | |
| 15828 | { | |
| 15829 | info->callbacks->einfo | |
| 15830 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
| 15831 | htab->glink->name); | |
| 15832 | return FALSE; | |
| 15833 | } | |
| 15834 | bfd_put_32 (dynobj, val, p); | |
| 15835 | p += 4; | |
| 15836 | /* .glink size. */ | |
| 15837 | p += 4; | |
| 15838 | /* Augmentation. */ | |
| 15839 | p += 1; | |
| 15840 | /* Ops. */ | |
| 15841 | p += 7; | |
| 2e0ce1c8 | 15842 | p += ((24 + align - 1) & -align) - 24; |
| da44f4e5 AM |
15843 | } |
| 15844 | ||
| 15845 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
| 15846 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
| 15847 | htab->glink_eh_frame, | |
| 15848 | htab->glink_eh_frame->contents)) | |
| 15849 | return FALSE; | |
| 15850 | } | |
| 58d180e8 | 15851 | |
| e717da7e | 15852 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
15853 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 15854 | bfd. */ | |
| c72f2fb2 | 15855 | while ((dynobj = dynobj->link.next) != NULL) |
| e717da7e AM |
15856 | { |
| 15857 | asection *s; | |
| 7b53ace3 | 15858 | |
| 0c8d6e5c | 15859 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
15860 | continue; |
| 15861 | ||
| e717da7e AM |
15862 | s = ppc64_elf_tdata (dynobj)->got; |
| 15863 | if (s != NULL | |
| eea6121a | 15864 | && s->size != 0 |
| e717da7e AM |
15865 | && s->output_section != bfd_abs_section_ptr |
| 15866 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15867 | s->contents, s->output_offset, | |
| eea6121a | 15868 | s->size)) |
| e717da7e AM |
15869 | return FALSE; |
| 15870 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 15871 | if (s != NULL | |
| eea6121a | 15872 | && s->size != 0 |
| e717da7e AM |
15873 | && s->output_section != bfd_abs_section_ptr |
| 15874 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15875 | s->contents, s->output_offset, | |
| eea6121a | 15876 | s->size)) |
| e717da7e AM |
15877 | return FALSE; |
| 15878 | } | |
| f6c52c13 | 15879 | |
| b34976b6 | 15880 | return TRUE; |
| 5bd4f169 AM |
15881 | } |
| 15882 | ||
| 5bd4f169 | 15883 | #include "elf64-target.h" |
| 7b8e7dad AM |
15884 | |
| 15885 | /* FreeBSD support */ | |
| 15886 | ||
| 15887 | #undef TARGET_LITTLE_SYM | |
| 15888 | #undef TARGET_LITTLE_NAME | |
| 15889 | ||
| 15890 | #undef TARGET_BIG_SYM | |
| 6d00b590 | 15891 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
| 7b8e7dad AM |
15892 | #undef TARGET_BIG_NAME |
| 15893 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
| 15894 | ||
| 15895 | #undef ELF_OSABI | |
| 15896 | #define ELF_OSABI ELFOSABI_FREEBSD | |
| 15897 | ||
| 15898 | #undef elf64_bed | |
| 15899 | #define elf64_bed elf64_powerpc_fbsd_bed | |
| 15900 | ||
| 15901 | #include "elf64-target.h" | |
| 15902 |