projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| 5bd4f169 | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 6f2750fe | 2 | Copyright (C) 1999-2016 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 |
| ad8e1ba5 AM |
75 | #define elf_backend_can_gc_sections 1 |
| 76 | #define elf_backend_can_refcount 1 | |
| 77 | #define elf_backend_rela_normal 1 | |
| 6bfdb61b | 78 | #define elf_backend_default_execstack 0 |
| ad8e1ba5 | 79 | |
| e717da7e | 80 | #define bfd_elf64_mkobject ppc64_elf_mkobject |
| ad8e1ba5 | 81 | #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup |
| aa374f67 | 82 | #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup |
| ee67d69a AM |
83 | #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data |
| 84 | #define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data | |
| ad8e1ba5 AM |
85 | #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook |
| 86 | #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create | |
| 90e3cdf2 | 87 | #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab |
| aa374f67 | 88 | #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms |
| ad8e1ba5 AM |
89 | |
| 90 | #define elf_backend_object_p ppc64_elf_object_p | |
| d37c89e5 AM |
91 | #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus |
| 92 | #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo | |
| 183e98be | 93 | #define elf_backend_write_core_note ppc64_elf_write_core_note |
| ad8e1ba5 AM |
94 | #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections |
| 95 | #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol | |
| 555cd476 | 96 | #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook |
| f6c7c3e8 | 97 | #define elf_backend_check_directives ppc64_elf_before_check_relocs |
| e5034e59 | 98 | #define elf_backend_notice_as_needed ppc64_elf_notice_as_needed |
| 8387904d | 99 | #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup |
| ad8e1ba5 | 100 | #define elf_backend_check_relocs ppc64_elf_check_relocs |
| 74f0fb50 | 101 | #define elf_backend_gc_keep ppc64_elf_gc_keep |
| 64d03ab5 | 102 | #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref |
| ad8e1ba5 AM |
103 | #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook |
| 104 | #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook | |
| 105 | #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol | |
| 106 | #define elf_backend_hide_symbol ppc64_elf_hide_symbol | |
| 9f296da3 | 107 | #define elf_backend_maybe_function_sym ppc64_elf_maybe_function_sym |
| ad8e1ba5 AM |
108 | #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust |
| 109 | #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections | |
| a345bc8d | 110 | #define elf_backend_hash_symbol ppc64_elf_hash_symbol |
| 74541ad4 | 111 | #define elf_backend_init_index_section _bfd_elf_init_2_index_sections |
| 60124e18 | 112 | #define elf_backend_action_discarded ppc64_elf_action_discarded |
| ad8e1ba5 AM |
113 | #define elf_backend_relocate_section ppc64_elf_relocate_section |
| 114 | #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol | |
| 115 | #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class | |
| 116 | #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections | |
| 754021d0 | 117 | #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook |
| 29ef7005 | 118 | #define elf_backend_special_sections ppc64_elf_special_sections |
| 6911b7dc | 119 | #define elf_backend_merge_symbol_attribute ppc64_elf_merge_symbol_attribute |
| ad8e1ba5 | 120 | |
| 5bd4f169 AM |
121 | /* The name of the dynamic interpreter. This is put in the .interp |
| 122 | section. */ | |
| 123 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1" | |
| 124 | ||
| 125 | /* The size in bytes of an entry in the procedure linkage table. */ | |
| b9e5796b | 126 | #define PLT_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 8) |
| 5bd4f169 AM |
127 | |
| 128 | /* The initial size of the plt reserved for the dynamic linker. */ | |
| b9e5796b | 129 | #define PLT_INITIAL_ENTRY_SIZE(htab) (htab->opd_abi ? 24 : 16) |
| 5bd4f169 | 130 | |
| a078d95a AM |
131 | /* Offsets to some stack save slots. */ |
| 132 | #define STK_LR 16 | |
| 133 | #define STK_TOC(htab) (htab->opd_abi ? 40 : 24) | |
| eb8d7fda | 134 | /* This one is dodgy. ELFv2 does not have a linker word, so use the |
| a078d95a AM |
135 | CR save slot. Used only by optimised __tls_get_addr call stub, |
| 136 | relying on __tls_get_addr_opt not saving CR.. */ | |
| 137 | #define STK_LINKER(htab) (htab->opd_abi ? 32 : 8) | |
| 138 | ||
| 5bd4f169 | 139 | /* TOC base pointers offset from start of TOC. */ |
| 411e1bfb | 140 | #define TOC_BASE_OFF 0x8000 |
| a27e685f AM |
141 | /* TOC base alignment. */ |
| 142 | #define TOC_BASE_ALIGN 256 | |
| 411e1bfb AM |
143 | |
| 144 | /* Offset of tp and dtp pointers from start of TLS block. */ | |
| 145 | #define TP_OFFSET 0x7000 | |
| 146 | #define DTP_OFFSET 0x8000 | |
| 5bd4f169 | 147 | |
| ad8e1ba5 AM |
148 | /* .plt call stub instructions. The normal stub is like this, but |
| 149 | sometimes the .plt entry crosses a 64k boundary and we need to | |
| 71a39c98 | 150 | insert an addi to adjust r11. */ |
| a078d95a | 151 | #define STD_R2_0R1 0xf8410000 /* std %r2,0+40(%r1) */ |
| 71a39c98 AM |
152 | #define ADDIS_R11_R2 0x3d620000 /* addis %r11,%r2,xxx@ha */ |
| 153 | #define LD_R12_0R11 0xe98b0000 /* ld %r12,xxx+0@l(%r11) */ | |
| 154 | #define MTCTR_R12 0x7d8903a6 /* mtctr %r12 */ | |
| 155 | #define LD_R2_0R11 0xe84b0000 /* ld %r2,xxx+8@l(%r11) */ | |
| 156 | #define LD_R11_0R11 0xe96b0000 /* ld %r11,xxx+16@l(%r11) */ | |
| 5d1634d7 AM |
157 | #define BCTR 0x4e800420 /* bctr */ |
| 158 | ||
| 71a39c98 | 159 | #define ADDI_R11_R11 0x396b0000 /* addi %r11,%r11,off@l */ |
| ad8e1ba5 AM |
160 | #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */ |
| 161 | #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */ | |
| 162 | ||
| 71a39c98 AM |
163 | #define XOR_R2_R12_R12 0x7d826278 /* xor %r2,%r12,%r12 */ |
| 164 | #define ADD_R11_R11_R2 0x7d6b1214 /* add %r11,%r11,%r2 */ | |
| 165 | #define XOR_R11_R12_R12 0x7d8b6278 /* xor %r11,%r12,%r12 */ | |
| 794e51c0 AM |
166 | #define ADD_R2_R2_R11 0x7c425a14 /* add %r2,%r2,%r11 */ |
| 167 | #define CMPLDI_R2_0 0x28220000 /* cmpldi %r2,0 */ | |
| 168 | #define BNECTR 0x4ca20420 /* bnectr+ */ | |
| 169 | #define BNECTR_P4 0x4ce20420 /* bnectr+ */ | |
| 170 | ||
| 71a39c98 | 171 | #define LD_R12_0R2 0xe9820000 /* ld %r12,xxx+0(%r2) */ |
| ac2df442 AM |
172 | #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */ |
| 173 | #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */ | |
| 174 | ||
| a078d95a | 175 | #define LD_R2_0R1 0xe8410000 /* ld %r2,0(%r1) */ |
| 006589cf AM |
176 | #define LD_R2_0R12 0xe84c0000 /* ld %r2,0(%r12) */ |
| 177 | #define ADD_R2_R2_R12 0x7c426214 /* add %r2,%r2,%r12 */ | |
| ad8e1ba5 | 178 | |
| 006589cf AM |
179 | #define LIS_R2 0x3c400000 /* lis %r2,xxx@ha */ |
| 180 | #define ADDIS_R2_R12 0x3c4c0000 /* addis %r2,%r12,xxx@ha */ | |
| 181 | #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */ | |
| a345bc8d AM |
182 | #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,xxx@ha */ |
| 183 | #define LD_R12_0R12 0xe98c0000 /* ld %r12,xxx@l(%r12) */ | |
| 184 | ||
| ee4bf8d2 | 185 | /* glink call stub instructions. We enter with the index in R0. */ |
| ad8e1ba5 | 186 | #define GLINK_CALL_STUB_SIZE (16*4) |
| ee4bf8d2 AM |
187 | /* 0: */ |
| 188 | /* .quad plt0-1f */ | |
| 189 | /* __glink: */ | |
| 190 | #define MFLR_R12 0x7d8802a6 /* mflr %12 */ | |
| 191 | #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */ | |
| 192 | /* 1: */ | |
| 193 | #define MFLR_R11 0x7d6802a6 /* mflr %11 */ | |
| 71a39c98 | 194 | /* ld %2,(0b-1b)(%11) */ |
| ee4bf8d2 | 195 | #define MTLR_R12 0x7d8803a6 /* mtlr %12 */ |
| 71a39c98 AM |
196 | #define ADD_R11_R2_R11 0x7d625a14 /* add %11,%2,%11 */ |
| 197 | /* ld %12,0(%11) */ | |
| 198 | /* ld %2,8(%11) */ | |
| 199 | /* mtctr %12 */ | |
| 200 | /* ld %11,16(%11) */ | |
| ee4bf8d2 | 201 | /* bctr */ |
| b9e5796b AM |
202 | #define MFLR_R0 0x7c0802a6 /* mflr %r0 */ |
| 203 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 204 | #define SUB_R12_R12_R11 0x7d8b6050 /* subf %r12,%r11,%r12 */ | |
| 205 | #define ADDI_R0_R12 0x380c0000 /* addi %r0,%r12,0 */ | |
| 206 | #define SRDI_R0_R0_2 0x7800f082 /* rldicl %r0,%r0,62,2 */ | |
| 5d1634d7 AM |
207 | |
| 208 | /* Pad with this. */ | |
| 209 | #define NOP 0x60000000 | |
| 210 | ||
| 721956f4 AM |
211 | /* Some other nops. */ |
| 212 | #define CROR_151515 0x4def7b82 | |
| 213 | #define CROR_313131 0x4ffffb82 | |
| 214 | ||
| cedb70c5 | 215 | /* .glink entries for the first 32k functions are two instructions. */ |
| 5d1634d7 AM |
216 | #define LI_R0_0 0x38000000 /* li %r0,0 */ |
| 217 | #define B_DOT 0x48000000 /* b . */ | |
| 218 | ||
| 219 | /* After that, we need two instructions to load the index, followed by | |
| 220 | a branch. */ | |
| 221 | #define LIS_R0_0 0x3c000000 /* lis %r0,0 */ | |
| 10ed1bba | 222 | #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */ |
| 41bd81ab | 223 | |
| deb0e272 AM |
224 | /* Instructions used by the save and restore reg functions. */ |
| 225 | #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */ | |
| 226 | #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */ | |
| 227 | #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */ | |
| 228 | #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */ | |
| 82bd7b59 AM |
229 | #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */ |
| 230 | #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */ | |
| deb0e272 AM |
231 | #define LI_R12_0 0x39800000 /* li %r12,0 */ |
| 232 | #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */ | |
| 233 | #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */ | |
| 234 | #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */ | |
| 82bd7b59 AM |
235 | #define BLR 0x4e800020 /* blr */ |
| 236 | ||
| 41bd81ab AM |
237 | /* Since .opd is an array of descriptors and each entry will end up |
| 238 | with identical R_PPC64_RELATIVE relocs, there is really no need to | |
| 239 | propagate .opd relocs; The dynamic linker should be taught to | |
| 1e2f5b6e | 240 | relocate .opd without reloc entries. */ |
| 41bd81ab AM |
241 | #ifndef NO_OPD_RELOCS |
| 242 | #define NO_OPD_RELOCS 0 | |
| 243 | #endif | |
| 810d4e75 | 244 | |
| a4b6fadd AM |
245 | #ifndef ARRAY_SIZE |
| 246 | #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0])) | |
| 247 | #endif | |
| 248 | ||
| 810d4e75 AM |
249 | static inline int |
| 250 | abiversion (bfd *abfd) | |
| 251 | { | |
| 252 | return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI; | |
| 253 | } | |
| 254 | ||
| 255 | static inline void | |
| 256 | set_abiversion (bfd *abfd, int ver) | |
| 257 | { | |
| 258 | elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI; | |
| 259 | elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI; | |
| 260 | } | |
| 5bd4f169 | 261 | \f |
| f5e87a1d | 262 | #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1) |
| b34976b6 | 263 | |
| 5bd4f169 | 264 | /* Relocation HOWTO's. */ |
| 04c9666a | 265 | static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC64_max]; |
| 5bd4f169 AM |
266 | |
| 267 | static reloc_howto_type ppc64_elf_howto_raw[] = { | |
| 268 | /* This reloc does nothing. */ | |
| 269 | HOWTO (R_PPC64_NONE, /* type */ | |
| 270 | 0, /* rightshift */ | |
| 6346d5ca AM |
271 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
| 272 | 0, /* bitsize */ | |
| b34976b6 | 273 | FALSE, /* pc_relative */ |
| 5bd4f169 | 274 | 0, /* bitpos */ |
| f5e87a1d | 275 | complain_overflow_dont, /* complain_on_overflow */ |
| 5bd4f169 AM |
276 | bfd_elf_generic_reloc, /* special_function */ |
| 277 | "R_PPC64_NONE", /* name */ | |
| b34976b6 | 278 | FALSE, /* partial_inplace */ |
| d006db6c | 279 | 0, /* src_mask */ |
| 5bd4f169 | 280 | 0, /* dst_mask */ |
| b34976b6 | 281 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
282 | |
| 283 | /* A standard 32 bit relocation. */ | |
| 284 | HOWTO (R_PPC64_ADDR32, /* type */ | |
| 285 | 0, /* rightshift */ | |
| 286 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 287 | 32, /* bitsize */ | |
| b34976b6 | 288 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
289 | 0, /* bitpos */ |
| 290 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 291 | bfd_elf_generic_reloc, /* special_function */ | |
| 292 | "R_PPC64_ADDR32", /* name */ | |
| b34976b6 | 293 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
294 | 0, /* src_mask */ |
| 295 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 296 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
297 | |
| 298 | /* An absolute 26 bit branch; the lower two bits must be zero. | |
| 299 | FIXME: we don't check that, we just clear them. */ | |
| 300 | HOWTO (R_PPC64_ADDR24, /* type */ | |
| 301 | 0, /* rightshift */ | |
| 302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 303 | 26, /* bitsize */ | |
| b34976b6 | 304 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
305 | 0, /* bitpos */ |
| 306 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 307 | bfd_elf_generic_reloc, /* special_function */ | |
| 308 | "R_PPC64_ADDR24", /* name */ | |
| b34976b6 | 309 | FALSE, /* partial_inplace */ |
| d006db6c | 310 | 0, /* src_mask */ |
| f5e87a1d | 311 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 312 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
313 | |
| 314 | /* A standard 16 bit relocation. */ | |
| 315 | HOWTO (R_PPC64_ADDR16, /* type */ | |
| 316 | 0, /* rightshift */ | |
| 317 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 318 | 16, /* bitsize */ | |
| b34976b6 | 319 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
320 | 0, /* bitpos */ |
| 321 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 322 | bfd_elf_generic_reloc, /* special_function */ | |
| 323 | "R_PPC64_ADDR16", /* name */ | |
| b34976b6 | 324 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
325 | 0, /* src_mask */ |
| 326 | 0xffff, /* dst_mask */ | |
| b34976b6 | 327 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
328 | |
| 329 | /* A 16 bit relocation without overflow. */ | |
| 330 | HOWTO (R_PPC64_ADDR16_LO, /* type */ | |
| 331 | 0, /* rightshift */ | |
| 332 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 333 | 16, /* bitsize */ | |
| b34976b6 | 334 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
335 | 0, /* bitpos */ |
| 336 | complain_overflow_dont,/* complain_on_overflow */ | |
| 337 | bfd_elf_generic_reloc, /* special_function */ | |
| 338 | "R_PPC64_ADDR16_LO", /* name */ | |
| b34976b6 | 339 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
340 | 0, /* src_mask */ |
| 341 | 0xffff, /* dst_mask */ | |
| b34976b6 | 342 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
343 | |
| 344 | /* Bits 16-31 of an address. */ | |
| 345 | HOWTO (R_PPC64_ADDR16_HI, /* type */ | |
| 346 | 16, /* rightshift */ | |
| 347 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 348 | 16, /* bitsize */ | |
| b34976b6 | 349 | FALSE, /* pc_relative */ |
| 5bd4f169 | 350 | 0, /* bitpos */ |
| f9c6b907 | 351 | complain_overflow_signed, /* complain_on_overflow */ |
| 5bd4f169 AM |
352 | bfd_elf_generic_reloc, /* special_function */ |
| 353 | "R_PPC64_ADDR16_HI", /* name */ | |
| b34976b6 | 354 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
355 | 0, /* src_mask */ |
| 356 | 0xffff, /* dst_mask */ | |
| b34976b6 | 357 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
358 | |
| 359 | /* Bits 16-31 of an address, plus 1 if the contents of the low 16 | |
| 360 | bits, treated as a signed number, is negative. */ | |
| 361 | HOWTO (R_PPC64_ADDR16_HA, /* type */ | |
| 362 | 16, /* rightshift */ | |
| 363 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 364 | 16, /* bitsize */ | |
| b34976b6 | 365 | FALSE, /* pc_relative */ |
| 5bd4f169 | 366 | 0, /* bitpos */ |
| f9c6b907 | 367 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 368 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 369 | "R_PPC64_ADDR16_HA", /* name */ |
| b34976b6 | 370 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
371 | 0, /* src_mask */ |
| 372 | 0xffff, /* dst_mask */ | |
| b34976b6 | 373 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
374 | |
| 375 | /* An absolute 16 bit branch; the lower two bits must be zero. | |
| 376 | FIXME: we don't check that, we just clear them. */ | |
| 377 | HOWTO (R_PPC64_ADDR14, /* type */ | |
| 378 | 0, /* rightshift */ | |
| 379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 380 | 16, /* bitsize */ | |
| b34976b6 | 381 | FALSE, /* pc_relative */ |
| 5bd4f169 | 382 | 0, /* bitpos */ |
| b80eed39 | 383 | complain_overflow_signed, /* complain_on_overflow */ |
| 2441e016 | 384 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 385 | "R_PPC64_ADDR14", /* name */ |
| b34976b6 | 386 | FALSE, /* partial_inplace */ |
| d006db6c | 387 | 0, /* src_mask */ |
| f5e87a1d | 388 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 389 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
390 | |
| 391 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 392 | indicate that the branch is expected to be taken. The lower two | |
| 393 | bits must be zero. */ | |
| 394 | HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */ | |
| 395 | 0, /* rightshift */ | |
| 396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 397 | 16, /* bitsize */ | |
| b34976b6 | 398 | FALSE, /* pc_relative */ |
| 5bd4f169 | 399 | 0, /* bitpos */ |
| b80eed39 | 400 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 401 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 402 | "R_PPC64_ADDR14_BRTAKEN",/* name */ |
| b34976b6 | 403 | FALSE, /* partial_inplace */ |
| d006db6c | 404 | 0, /* src_mask */ |
| f5e87a1d | 405 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 406 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
407 | |
| 408 | /* An absolute 16 bit branch, for which bit 10 should be set to | |
| 409 | indicate that the branch is not expected to be taken. The lower | |
| 410 | two bits must be zero. */ | |
| 411 | HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */ | |
| 412 | 0, /* rightshift */ | |
| 413 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 414 | 16, /* bitsize */ | |
| b34976b6 | 415 | FALSE, /* pc_relative */ |
| 5bd4f169 | 416 | 0, /* bitpos */ |
| b80eed39 | 417 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 418 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 419 | "R_PPC64_ADDR14_BRNTAKEN",/* name */ |
| b34976b6 | 420 | FALSE, /* partial_inplace */ |
| d006db6c | 421 | 0, /* src_mask */ |
| f5e87a1d | 422 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 423 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
424 | |
| 425 | /* A relative 26 bit branch; the lower two bits must be zero. */ | |
| 426 | HOWTO (R_PPC64_REL24, /* type */ | |
| 427 | 0, /* rightshift */ | |
| 428 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 429 | 26, /* bitsize */ | |
| b34976b6 | 430 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
431 | 0, /* bitpos */ |
| 432 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 433 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 434 | "R_PPC64_REL24", /* name */ |
| b34976b6 | 435 | FALSE, /* partial_inplace */ |
| d006db6c | 436 | 0, /* src_mask */ |
| f5e87a1d | 437 | 0x03fffffc, /* dst_mask */ |
| b34976b6 | 438 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
439 | |
| 440 | /* A relative 16 bit branch; the lower two bits must be zero. */ | |
| 441 | HOWTO (R_PPC64_REL14, /* type */ | |
| 442 | 0, /* rightshift */ | |
| 443 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 444 | 16, /* bitsize */ | |
| b34976b6 | 445 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
446 | 0, /* bitpos */ |
| 447 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2441e016 | 448 | ppc64_elf_branch_reloc, /* special_function */ |
| 5bd4f169 | 449 | "R_PPC64_REL14", /* name */ |
| b34976b6 | 450 | FALSE, /* partial_inplace */ |
| d006db6c | 451 | 0, /* src_mask */ |
| f5e87a1d | 452 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 453 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
454 | |
| 455 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 456 | the branch is expected to be taken. The lower two bits must be | |
| 457 | zero. */ | |
| 458 | HOWTO (R_PPC64_REL14_BRTAKEN, /* type */ | |
| 459 | 0, /* rightshift */ | |
| 460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 461 | 16, /* bitsize */ | |
| b34976b6 | 462 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
463 | 0, /* bitpos */ |
| 464 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 465 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 466 | "R_PPC64_REL14_BRTAKEN", /* name */ |
| b34976b6 | 467 | FALSE, /* partial_inplace */ |
| d006db6c | 468 | 0, /* src_mask */ |
| f5e87a1d | 469 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 470 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
471 | |
| 472 | /* A relative 16 bit branch. Bit 10 should be set to indicate that | |
| 473 | the branch is not expected to be taken. The lower two bits must | |
| 474 | be zero. */ | |
| 475 | HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */ | |
| 476 | 0, /* rightshift */ | |
| 477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 478 | 16, /* bitsize */ | |
| b34976b6 | 479 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
480 | 0, /* bitpos */ |
| 481 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 482 | ppc64_elf_brtaken_reloc, /* special_function */ |
| 5bd4f169 | 483 | "R_PPC64_REL14_BRNTAKEN",/* name */ |
| b34976b6 | 484 | FALSE, /* partial_inplace */ |
| d006db6c | 485 | 0, /* src_mask */ |
| f5e87a1d | 486 | 0x0000fffc, /* dst_mask */ |
| b34976b6 | 487 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
488 | |
| 489 | /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the | |
| 490 | symbol. */ | |
| 491 | HOWTO (R_PPC64_GOT16, /* type */ | |
| 492 | 0, /* rightshift */ | |
| 493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 494 | 16, /* bitsize */ | |
| b34976b6 | 495 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
496 | 0, /* bitpos */ |
| 497 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 498 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 499 | "R_PPC64_GOT16", /* name */ |
| b34976b6 | 500 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
501 | 0, /* src_mask */ |
| 502 | 0xffff, /* dst_mask */ | |
| b34976b6 | 503 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
504 | |
| 505 | /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for | |
| 506 | the symbol. */ | |
| 507 | HOWTO (R_PPC64_GOT16_LO, /* type */ | |
| 508 | 0, /* rightshift */ | |
| 509 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 510 | 16, /* bitsize */ | |
| b34976b6 | 511 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
512 | 0, /* bitpos */ |
| 513 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 514 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 515 | "R_PPC64_GOT16_LO", /* name */ |
| b34976b6 | 516 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
517 | 0, /* src_mask */ |
| 518 | 0xffff, /* dst_mask */ | |
| b34976b6 | 519 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
520 | |
| 521 | /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for | |
| 522 | the symbol. */ | |
| 523 | HOWTO (R_PPC64_GOT16_HI, /* type */ | |
| 524 | 16, /* rightshift */ | |
| 525 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 526 | 16, /* bitsize */ | |
| b34976b6 | 527 | FALSE, /* pc_relative */ |
| 5bd4f169 | 528 | 0, /* bitpos */ |
| f9c6b907 | 529 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 530 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 531 | "R_PPC64_GOT16_HI", /* name */ |
| b34976b6 | 532 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
533 | 0, /* src_mask */ |
| 534 | 0xffff, /* dst_mask */ | |
| b34976b6 | 535 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
536 | |
| 537 | /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for | |
| 538 | the symbol. */ | |
| 539 | HOWTO (R_PPC64_GOT16_HA, /* type */ | |
| 540 | 16, /* rightshift */ | |
| 541 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 542 | 16, /* bitsize */ | |
| b34976b6 | 543 | FALSE, /* pc_relative */ |
| 5bd4f169 | 544 | 0, /* bitpos */ |
| f9c6b907 | 545 | complain_overflow_signed,/* complain_on_overflow */ |
| 805fc799 | 546 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 547 | "R_PPC64_GOT16_HA", /* name */ |
| b34976b6 | 548 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
549 | 0, /* src_mask */ |
| 550 | 0xffff, /* dst_mask */ | |
| b34976b6 | 551 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
552 | |
| 553 | /* This is used only by the dynamic linker. The symbol should exist | |
| 554 | both in the object being run and in some shared library. The | |
| 555 | dynamic linker copies the data addressed by the symbol from the | |
| 556 | shared library into the object, because the object being | |
| 557 | run has to have the data at some particular address. */ | |
| 558 | HOWTO (R_PPC64_COPY, /* type */ | |
| 559 | 0, /* rightshift */ | |
| f5e87a1d AM |
560 | 0, /* this one is variable size */ |
| 561 | 0, /* bitsize */ | |
| b34976b6 | 562 | FALSE, /* pc_relative */ |
| 5bd4f169 | 563 | 0, /* bitpos */ |
| f5e87a1d AM |
564 | complain_overflow_dont, /* complain_on_overflow */ |
| 565 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 5bd4f169 | 566 | "R_PPC64_COPY", /* name */ |
| b34976b6 | 567 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
568 | 0, /* src_mask */ |
| 569 | 0, /* dst_mask */ | |
| b34976b6 | 570 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
571 | |
| 572 | /* Like R_PPC64_ADDR64, but used when setting global offset table | |
| 573 | entries. */ | |
| 574 | HOWTO (R_PPC64_GLOB_DAT, /* type */ | |
| 575 | 0, /* rightshift */ | |
| 576 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 577 | 64, /* bitsize */ | |
| b34976b6 | 578 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
579 | 0, /* bitpos */ |
| 580 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 581 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 582 | "R_PPC64_GLOB_DAT", /* name */ |
| b34976b6 | 583 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 584 | 0, /* src_mask */ |
| f5e87a1d | 585 | ONES (64), /* dst_mask */ |
| b34976b6 | 586 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
587 | |
| 588 | /* Created by the link editor. Marks a procedure linkage table | |
| 589 | entry for a symbol. */ | |
| 590 | HOWTO (R_PPC64_JMP_SLOT, /* type */ | |
| 591 | 0, /* rightshift */ | |
| 592 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 593 | 0, /* bitsize */ | |
| b34976b6 | 594 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
595 | 0, /* bitpos */ |
| 596 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 597 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 598 | "R_PPC64_JMP_SLOT", /* name */ |
| b34976b6 | 599 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
600 | 0, /* src_mask */ |
| 601 | 0, /* dst_mask */ | |
| b34976b6 | 602 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
603 | |
| 604 | /* Used only by the dynamic linker. When the object is run, this | |
| 605 | doubleword64 is set to the load address of the object, plus the | |
| 606 | addend. */ | |
| 607 | HOWTO (R_PPC64_RELATIVE, /* type */ | |
| 608 | 0, /* rightshift */ | |
| 609 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 610 | 64, /* bitsize */ | |
| b34976b6 | 611 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
612 | 0, /* bitpos */ |
| 613 | complain_overflow_dont, /* complain_on_overflow */ | |
| 614 | bfd_elf_generic_reloc, /* special_function */ | |
| 615 | "R_PPC64_RELATIVE", /* name */ | |
| b34976b6 | 616 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 617 | 0, /* src_mask */ |
| f5e87a1d | 618 | ONES (64), /* dst_mask */ |
| b34976b6 | 619 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
620 | |
| 621 | /* Like R_PPC64_ADDR32, but may be unaligned. */ | |
| 622 | HOWTO (R_PPC64_UADDR32, /* type */ | |
| 623 | 0, /* rightshift */ | |
| 624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 625 | 32, /* bitsize */ | |
| b34976b6 | 626 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
627 | 0, /* bitpos */ |
| 628 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 629 | bfd_elf_generic_reloc, /* special_function */ | |
| 630 | "R_PPC64_UADDR32", /* name */ | |
| b34976b6 | 631 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
632 | 0, /* src_mask */ |
| 633 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 634 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
635 | |
| 636 | /* Like R_PPC64_ADDR16, but may be unaligned. */ | |
| 637 | HOWTO (R_PPC64_UADDR16, /* type */ | |
| 638 | 0, /* rightshift */ | |
| 639 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 640 | 16, /* bitsize */ | |
| b34976b6 | 641 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
642 | 0, /* bitpos */ |
| 643 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 644 | bfd_elf_generic_reloc, /* special_function */ | |
| 645 | "R_PPC64_UADDR16", /* name */ | |
| b34976b6 | 646 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
647 | 0, /* src_mask */ |
| 648 | 0xffff, /* dst_mask */ | |
| b34976b6 | 649 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
650 | |
| 651 | /* 32-bit PC relative. */ | |
| 652 | HOWTO (R_PPC64_REL32, /* type */ | |
| 653 | 0, /* rightshift */ | |
| 654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 655 | 32, /* bitsize */ | |
| b34976b6 | 656 | TRUE, /* pc_relative */ |
| 5bd4f169 | 657 | 0, /* bitpos */ |
| 5bd4f169 AM |
658 | complain_overflow_signed, /* complain_on_overflow */ |
| 659 | bfd_elf_generic_reloc, /* special_function */ | |
| 660 | "R_PPC64_REL32", /* name */ | |
| b34976b6 | 661 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
662 | 0, /* src_mask */ |
| 663 | 0xffffffff, /* dst_mask */ | |
| b34976b6 | 664 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 665 | |
| 10ed1bba | 666 | /* 32-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
667 | HOWTO (R_PPC64_PLT32, /* type */ |
| 668 | 0, /* rightshift */ | |
| 669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 670 | 32, /* bitsize */ | |
| b34976b6 | 671 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
672 | 0, /* bitpos */ |
| 673 | complain_overflow_bitfield, /* complain_on_overflow */ | |
| 805fc799 | 674 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 675 | "R_PPC64_PLT32", /* name */ |
| b34976b6 | 676 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 677 | 0, /* src_mask */ |
| f5e87a1d | 678 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 679 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
680 | |
| 681 | /* 32-bit PC relative relocation to the symbol's procedure linkage table. | |
| 682 | FIXME: R_PPC64_PLTREL32 not supported. */ | |
| 683 | HOWTO (R_PPC64_PLTREL32, /* type */ | |
| 684 | 0, /* rightshift */ | |
| 685 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 686 | 32, /* bitsize */ | |
| b34976b6 | 687 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
688 | 0, /* bitpos */ |
| 689 | complain_overflow_signed, /* complain_on_overflow */ | |
| 690 | bfd_elf_generic_reloc, /* special_function */ | |
| 691 | "R_PPC64_PLTREL32", /* name */ | |
| b34976b6 | 692 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 693 | 0, /* src_mask */ |
| f5e87a1d | 694 | 0xffffffff, /* dst_mask */ |
| b34976b6 | 695 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
696 | |
| 697 | /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for | |
| 698 | the symbol. */ | |
| 699 | HOWTO (R_PPC64_PLT16_LO, /* type */ | |
| 700 | 0, /* rightshift */ | |
| 701 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 702 | 16, /* bitsize */ | |
| b34976b6 | 703 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
704 | 0, /* bitpos */ |
| 705 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 706 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 707 | "R_PPC64_PLT16_LO", /* name */ |
| b34976b6 | 708 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
709 | 0, /* src_mask */ |
| 710 | 0xffff, /* dst_mask */ | |
| b34976b6 | 711 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
712 | |
| 713 | /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for | |
| 714 | the symbol. */ | |
| 715 | HOWTO (R_PPC64_PLT16_HI, /* type */ | |
| 716 | 16, /* rightshift */ | |
| 717 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 718 | 16, /* bitsize */ | |
| b34976b6 | 719 | FALSE, /* pc_relative */ |
| 5bd4f169 | 720 | 0, /* bitpos */ |
| f9c6b907 | 721 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 722 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 723 | "R_PPC64_PLT16_HI", /* name */ |
| b34976b6 | 724 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
725 | 0, /* src_mask */ |
| 726 | 0xffff, /* dst_mask */ | |
| b34976b6 | 727 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
728 | |
| 729 | /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for | |
| 730 | the symbol. */ | |
| 731 | HOWTO (R_PPC64_PLT16_HA, /* type */ | |
| 732 | 16, /* rightshift */ | |
| 733 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 734 | 16, /* bitsize */ | |
| b34976b6 | 735 | FALSE, /* pc_relative */ |
| 5bd4f169 | 736 | 0, /* bitpos */ |
| f9c6b907 | 737 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 738 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 739 | "R_PPC64_PLT16_HA", /* name */ |
| b34976b6 | 740 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
741 | 0, /* src_mask */ |
| 742 | 0xffff, /* dst_mask */ | |
| b34976b6 | 743 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 744 | |
| c061c2d8 | 745 | /* 16-bit section relative relocation. */ |
| 5bd4f169 AM |
746 | HOWTO (R_PPC64_SECTOFF, /* type */ |
| 747 | 0, /* rightshift */ | |
| c061c2d8 AM |
748 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 749 | 16, /* bitsize */ | |
| b34976b6 | 750 | FALSE, /* pc_relative */ |
| 5bd4f169 | 751 | 0, /* bitpos */ |
| b80eed39 | 752 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 753 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 754 | "R_PPC64_SECTOFF", /* name */ |
| b34976b6 | 755 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 756 | 0, /* src_mask */ |
| c061c2d8 | 757 | 0xffff, /* dst_mask */ |
| b34976b6 | 758 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 759 | |
| c061c2d8 | 760 | /* Like R_PPC64_SECTOFF, but no overflow warning. */ |
| 5bd4f169 AM |
761 | HOWTO (R_PPC64_SECTOFF_LO, /* type */ |
| 762 | 0, /* rightshift */ | |
| 763 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 764 | 16, /* bitsize */ | |
| b34976b6 | 765 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
766 | 0, /* bitpos */ |
| 767 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 768 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 769 | "R_PPC64_SECTOFF_LO", /* name */ |
| b34976b6 | 770 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
771 | 0, /* src_mask */ |
| 772 | 0xffff, /* dst_mask */ | |
| b34976b6 | 773 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
774 | |
| 775 | /* 16-bit upper half section relative relocation. */ | |
| 776 | HOWTO (R_PPC64_SECTOFF_HI, /* type */ | |
| 777 | 16, /* rightshift */ | |
| 778 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 779 | 16, /* bitsize */ | |
| b34976b6 | 780 | FALSE, /* pc_relative */ |
| 5bd4f169 | 781 | 0, /* bitpos */ |
| f9c6b907 | 782 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 783 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 5bd4f169 | 784 | "R_PPC64_SECTOFF_HI", /* name */ |
| b34976b6 | 785 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
786 | 0, /* src_mask */ |
| 787 | 0xffff, /* dst_mask */ | |
| b34976b6 | 788 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
789 | |
| 790 | /* 16-bit upper half adjusted section relative relocation. */ | |
| 791 | HOWTO (R_PPC64_SECTOFF_HA, /* type */ | |
| 792 | 16, /* rightshift */ | |
| 793 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 794 | 16, /* bitsize */ | |
| b34976b6 | 795 | FALSE, /* pc_relative */ |
| 5bd4f169 | 796 | 0, /* bitpos */ |
| f9c6b907 | 797 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 798 | ppc64_elf_sectoff_ha_reloc, /* special_function */ |
| 5bd4f169 | 799 | "R_PPC64_SECTOFF_HA", /* name */ |
| b34976b6 | 800 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
801 | 0, /* src_mask */ |
| 802 | 0xffff, /* dst_mask */ | |
| b34976b6 | 803 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 804 | |
| 04c9666a AM |
805 | /* Like R_PPC64_REL24 without touching the two least significant bits. */ |
| 806 | HOWTO (R_PPC64_REL30, /* type */ | |
| 5bd4f169 AM |
807 | 2, /* rightshift */ |
| 808 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 809 | 30, /* bitsize */ | |
| b34976b6 | 810 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
811 | 0, /* bitpos */ |
| 812 | complain_overflow_dont, /* complain_on_overflow */ | |
| 813 | bfd_elf_generic_reloc, /* special_function */ | |
| 04c9666a | 814 | "R_PPC64_REL30", /* name */ |
| b34976b6 | 815 | FALSE, /* partial_inplace */ |
| d006db6c | 816 | 0, /* src_mask */ |
| 5bd4f169 | 817 | 0xfffffffc, /* dst_mask */ |
| b34976b6 | 818 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
819 | |
| 820 | /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */ | |
| 821 | ||
| 822 | /* A standard 64-bit relocation. */ | |
| 823 | HOWTO (R_PPC64_ADDR64, /* type */ | |
| 824 | 0, /* rightshift */ | |
| 825 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 826 | 64, /* bitsize */ | |
| b34976b6 | 827 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
828 | 0, /* bitpos */ |
| 829 | complain_overflow_dont, /* complain_on_overflow */ | |
| 830 | bfd_elf_generic_reloc, /* special_function */ | |
| 831 | "R_PPC64_ADDR64", /* name */ | |
| b34976b6 | 832 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 833 | 0, /* src_mask */ |
| f5e87a1d | 834 | ONES (64), /* dst_mask */ |
| b34976b6 | 835 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
836 | |
| 837 | /* The bits 32-47 of an address. */ | |
| 838 | HOWTO (R_PPC64_ADDR16_HIGHER, /* type */ | |
| 839 | 32, /* rightshift */ | |
| 840 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 841 | 16, /* bitsize */ | |
| b34976b6 | 842 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
843 | 0, /* bitpos */ |
| 844 | complain_overflow_dont, /* complain_on_overflow */ | |
| 845 | bfd_elf_generic_reloc, /* special_function */ | |
| 846 | "R_PPC64_ADDR16_HIGHER", /* name */ | |
| b34976b6 | 847 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
848 | 0, /* src_mask */ |
| 849 | 0xffff, /* dst_mask */ | |
| b34976b6 | 850 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
851 | |
| 852 | /* The bits 32-47 of an address, plus 1 if the contents of the low | |
| 853 | 16 bits, treated as a signed number, is negative. */ | |
| 854 | HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */ | |
| 855 | 32, /* rightshift */ | |
| 856 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 857 | 16, /* bitsize */ | |
| b34976b6 | 858 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
859 | 0, /* bitpos */ |
| 860 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 861 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 862 | "R_PPC64_ADDR16_HIGHERA", /* name */ |
| b34976b6 | 863 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
864 | 0, /* src_mask */ |
| 865 | 0xffff, /* dst_mask */ | |
| b34976b6 | 866 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
867 | |
| 868 | /* The bits 48-63 of an address. */ | |
| 869 | HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */ | |
| 870 | 48, /* rightshift */ | |
| 871 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 872 | 16, /* bitsize */ | |
| b34976b6 | 873 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
874 | 0, /* bitpos */ |
| 875 | complain_overflow_dont, /* complain_on_overflow */ | |
| 876 | bfd_elf_generic_reloc, /* special_function */ | |
| 877 | "R_PPC64_ADDR16_HIGHEST", /* name */ | |
| b34976b6 | 878 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
879 | 0, /* src_mask */ |
| 880 | 0xffff, /* dst_mask */ | |
| b34976b6 | 881 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
882 | |
| 883 | /* The bits 48-63 of an address, plus 1 if the contents of the low | |
| 884 | 16 bits, treated as a signed number, is negative. */ | |
| 885 | HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */ | |
| 886 | 48, /* rightshift */ | |
| 887 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 888 | 16, /* bitsize */ | |
| b34976b6 | 889 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
890 | 0, /* bitpos */ |
| 891 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 892 | ppc64_elf_ha_reloc, /* special_function */ |
| 5bd4f169 | 893 | "R_PPC64_ADDR16_HIGHESTA", /* name */ |
| b34976b6 | 894 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
895 | 0, /* src_mask */ |
| 896 | 0xffff, /* dst_mask */ | |
| b34976b6 | 897 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
898 | |
| 899 | /* Like ADDR64, but may be unaligned. */ | |
| 900 | HOWTO (R_PPC64_UADDR64, /* type */ | |
| 901 | 0, /* rightshift */ | |
| 902 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 903 | 64, /* bitsize */ | |
| b34976b6 | 904 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
905 | 0, /* bitpos */ |
| 906 | complain_overflow_dont, /* complain_on_overflow */ | |
| 907 | bfd_elf_generic_reloc, /* special_function */ | |
| 908 | "R_PPC64_UADDR64", /* name */ | |
| b34976b6 | 909 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 910 | 0, /* src_mask */ |
| f5e87a1d | 911 | ONES (64), /* dst_mask */ |
| b34976b6 | 912 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
913 | |
| 914 | /* 64-bit relative relocation. */ | |
| 915 | HOWTO (R_PPC64_REL64, /* type */ | |
| 916 | 0, /* rightshift */ | |
| 917 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 918 | 64, /* bitsize */ | |
| b34976b6 | 919 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
920 | 0, /* bitpos */ |
| 921 | complain_overflow_dont, /* complain_on_overflow */ | |
| 922 | bfd_elf_generic_reloc, /* special_function */ | |
| 923 | "R_PPC64_REL64", /* name */ | |
| b34976b6 | 924 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 925 | 0, /* src_mask */ |
| f5e87a1d | 926 | ONES (64), /* dst_mask */ |
| b34976b6 | 927 | TRUE), /* pcrel_offset */ |
| 5bd4f169 | 928 | |
| cedb70c5 | 929 | /* 64-bit relocation to the symbol's procedure linkage table. */ |
| 5bd4f169 AM |
930 | HOWTO (R_PPC64_PLT64, /* type */ |
| 931 | 0, /* rightshift */ | |
| 932 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 933 | 64, /* bitsize */ | |
| b34976b6 | 934 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
935 | 0, /* bitpos */ |
| 936 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 937 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 938 | "R_PPC64_PLT64", /* name */ |
| b34976b6 | 939 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 940 | 0, /* src_mask */ |
| f5e87a1d | 941 | ONES (64), /* dst_mask */ |
| b34976b6 | 942 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
943 | |
| 944 | /* 64-bit PC relative relocation to the symbol's procedure linkage | |
| 945 | table. */ | |
| 946 | /* FIXME: R_PPC64_PLTREL64 not supported. */ | |
| 947 | HOWTO (R_PPC64_PLTREL64, /* type */ | |
| 948 | 0, /* rightshift */ | |
| 949 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 950 | 64, /* bitsize */ | |
| b34976b6 | 951 | TRUE, /* pc_relative */ |
| 5bd4f169 AM |
952 | 0, /* bitpos */ |
| 953 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 954 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 5bd4f169 | 955 | "R_PPC64_PLTREL64", /* name */ |
| b34976b6 | 956 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 957 | 0, /* src_mask */ |
| f5e87a1d | 958 | ONES (64), /* dst_mask */ |
| b34976b6 | 959 | TRUE), /* pcrel_offset */ |
| 5bd4f169 AM |
960 | |
| 961 | /* 16 bit TOC-relative relocation. */ | |
| 962 | ||
| 963 | /* R_PPC64_TOC16 47 half16* S + A - .TOC. */ | |
| 964 | HOWTO (R_PPC64_TOC16, /* type */ | |
| 965 | 0, /* rightshift */ | |
| 966 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 967 | 16, /* bitsize */ | |
| b34976b6 | 968 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
969 | 0, /* bitpos */ |
| 970 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 971 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 972 | "R_PPC64_TOC16", /* name */ |
| b34976b6 | 973 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
974 | 0, /* src_mask */ |
| 975 | 0xffff, /* dst_mask */ | |
| b34976b6 | 976 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
977 | |
| 978 | /* 16 bit TOC-relative relocation without overflow. */ | |
| 979 | ||
| 980 | /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */ | |
| 981 | HOWTO (R_PPC64_TOC16_LO, /* type */ | |
| 982 | 0, /* rightshift */ | |
| 983 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 984 | 16, /* bitsize */ | |
| b34976b6 | 985 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
986 | 0, /* bitpos */ |
| 987 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 988 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 989 | "R_PPC64_TOC16_LO", /* name */ |
| b34976b6 | 990 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
991 | 0, /* src_mask */ |
| 992 | 0xffff, /* dst_mask */ | |
| b34976b6 | 993 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
994 | |
| 995 | /* 16 bit TOC-relative relocation, high 16 bits. */ | |
| 996 | ||
| 997 | /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */ | |
| 998 | HOWTO (R_PPC64_TOC16_HI, /* type */ | |
| 999 | 16, /* rightshift */ | |
| 1000 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1001 | 16, /* bitsize */ | |
| b34976b6 | 1002 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1003 | 0, /* bitpos */ |
| f9c6b907 | 1004 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1005 | ppc64_elf_toc_reloc, /* special_function */ |
| 5bd4f169 | 1006 | "R_PPC64_TOC16_HI", /* name */ |
| b34976b6 | 1007 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1008 | 0, /* src_mask */ |
| 1009 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1010 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1011 | |
| 1012 | /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the | |
| 1013 | contents of the low 16 bits, treated as a signed number, is | |
| 1014 | negative. */ | |
| 1015 | ||
| 1016 | /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */ | |
| 1017 | HOWTO (R_PPC64_TOC16_HA, /* type */ | |
| 1018 | 16, /* rightshift */ | |
| 1019 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1020 | 16, /* bitsize */ | |
| b34976b6 | 1021 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1022 | 0, /* bitpos */ |
| f9c6b907 | 1023 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1024 | ppc64_elf_toc_ha_reloc, /* special_function */ |
| 5bd4f169 | 1025 | "R_PPC64_TOC16_HA", /* name */ |
| b34976b6 | 1026 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1027 | 0, /* src_mask */ |
| 1028 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1029 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1030 | |
| 1031 | /* 64-bit relocation; insert value of TOC base (.TOC.). */ | |
| 1032 | ||
| 1033 | /* R_PPC64_TOC 51 doubleword64 .TOC. */ | |
| 1034 | HOWTO (R_PPC64_TOC, /* type */ | |
| 1035 | 0, /* rightshift */ | |
| 1036 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1037 | 64, /* bitsize */ | |
| b34976b6 | 1038 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1039 | 0, /* bitpos */ |
| b80eed39 | 1040 | complain_overflow_dont, /* complain_on_overflow */ |
| 805fc799 | 1041 | ppc64_elf_toc64_reloc, /* special_function */ |
| 5bd4f169 | 1042 | "R_PPC64_TOC", /* name */ |
| b34976b6 | 1043 | FALSE, /* partial_inplace */ |
| 5bd4f169 | 1044 | 0, /* src_mask */ |
| f5e87a1d | 1045 | ONES (64), /* dst_mask */ |
| b34976b6 | 1046 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
1047 | |
| 1048 | /* Like R_PPC64_GOT16, but also informs the link editor that the | |
| 1049 | value to relocate may (!) refer to a PLT entry which the link | |
| 1050 | editor (a) may replace with the symbol value. If the link editor | |
| 1051 | is unable to fully resolve the symbol, it may (b) create a PLT | |
| 1052 | entry and store the address to the new PLT entry in the GOT. | |
| 1053 | This permits lazy resolution of function symbols at run time. | |
| 1054 | The link editor may also skip all of this and just (c) emit a | |
| 1055 | R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */ | |
| 1056 | /* FIXME: R_PPC64_PLTGOT16 not implemented. */ | |
| 1057 | HOWTO (R_PPC64_PLTGOT16, /* type */ | |
| 1058 | 0, /* rightshift */ | |
| 1059 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1060 | 16, /* bitsize */ | |
| b34976b6 | 1061 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1062 | 0, /* bitpos */ |
| 1063 | complain_overflow_signed, /* complain_on_overflow */ | |
| 805fc799 | 1064 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb AM |
1065 | "R_PPC64_PLTGOT16", /* name */ |
| 1066 | FALSE, /* partial_inplace */ | |
| 1067 | 0, /* src_mask */ | |
| 1068 | 0xffff, /* dst_mask */ | |
| 1069 | FALSE), /* pcrel_offset */ | |
| 1070 | ||
| 1071 | /* Like R_PPC64_PLTGOT16, but without overflow. */ | |
| 1072 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1073 | HOWTO (R_PPC64_PLTGOT16_LO, /* type */ | |
| 1074 | 0, /* rightshift */ | |
| 1075 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1076 | 16, /* bitsize */ | |
| 1077 | FALSE, /* pc_relative */ | |
| 1078 | 0, /* bitpos */ | |
| 1079 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1080 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1081 | "R_PPC64_PLTGOT16_LO", /* name */ | |
| 1082 | FALSE, /* partial_inplace */ | |
| 1083 | 0, /* src_mask */ | |
| 1084 | 0xffff, /* dst_mask */ | |
| 1085 | FALSE), /* pcrel_offset */ | |
| 1086 | ||
| 1087 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */ | |
| 1088 | /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */ | |
| 1089 | HOWTO (R_PPC64_PLTGOT16_HI, /* type */ | |
| 1090 | 16, /* rightshift */ | |
| 1091 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1092 | 16, /* bitsize */ | |
| 1093 | FALSE, /* pc_relative */ | |
| 1094 | 0, /* bitpos */ | |
| f9c6b907 | 1095 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1096 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1097 | "R_PPC64_PLTGOT16_HI", /* name */ | |
| 1098 | FALSE, /* partial_inplace */ | |
| 1099 | 0, /* src_mask */ | |
| 1100 | 0xffff, /* dst_mask */ | |
| 1101 | FALSE), /* pcrel_offset */ | |
| 1102 | ||
| 1103 | /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus | |
| 1104 | 1 if the contents of the low 16 bits, treated as a signed number, | |
| 1105 | is negative. */ | |
| 1106 | /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */ | |
| 1107 | HOWTO (R_PPC64_PLTGOT16_HA, /* type */ | |
| 1108 | 16, /* rightshift */ | |
| 1109 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1110 | 16, /* bitsize */ | |
| 1111 | FALSE, /* pc_relative */ | |
| 1112 | 0, /* bitpos */ | |
| f9c6b907 | 1113 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1114 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1115 | "R_PPC64_PLTGOT16_HA", /* name */ | |
| 1116 | FALSE, /* partial_inplace */ | |
| 1117 | 0, /* src_mask */ | |
| 1118 | 0xffff, /* dst_mask */ | |
| 1119 | FALSE), /* pcrel_offset */ | |
| 1120 | ||
| 1121 | /* Like R_PPC64_ADDR16, but for instructions with a DS field. */ | |
| 1122 | HOWTO (R_PPC64_ADDR16_DS, /* type */ | |
| 1123 | 0, /* rightshift */ | |
| 1124 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1125 | 16, /* bitsize */ | |
| 1126 | FALSE, /* pc_relative */ | |
| 1127 | 0, /* bitpos */ | |
| b80eed39 | 1128 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1129 | bfd_elf_generic_reloc, /* special_function */ |
| 1130 | "R_PPC64_ADDR16_DS", /* name */ | |
| 1131 | FALSE, /* partial_inplace */ | |
| 1132 | 0, /* src_mask */ | |
| 1133 | 0xfffc, /* dst_mask */ | |
| 1134 | FALSE), /* pcrel_offset */ | |
| 1135 | ||
| 1136 | /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */ | |
| 1137 | HOWTO (R_PPC64_ADDR16_LO_DS, /* type */ | |
| 1138 | 0, /* rightshift */ | |
| 1139 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1140 | 16, /* bitsize */ | |
| 1141 | FALSE, /* pc_relative */ | |
| 1142 | 0, /* bitpos */ | |
| 1143 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1144 | bfd_elf_generic_reloc, /* special_function */ | |
| 1145 | "R_PPC64_ADDR16_LO_DS",/* name */ | |
| 1146 | FALSE, /* partial_inplace */ | |
| 1147 | 0, /* src_mask */ | |
| 1148 | 0xfffc, /* dst_mask */ | |
| 1149 | FALSE), /* pcrel_offset */ | |
| 1150 | ||
| 1151 | /* Like R_PPC64_GOT16, but for instructions with a DS field. */ | |
| 1152 | HOWTO (R_PPC64_GOT16_DS, /* type */ | |
| 1153 | 0, /* rightshift */ | |
| 1154 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1155 | 16, /* bitsize */ | |
| 1156 | FALSE, /* pc_relative */ | |
| 1157 | 0, /* bitpos */ | |
| 1158 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1159 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1160 | "R_PPC64_GOT16_DS", /* name */ | |
| 1161 | FALSE, /* partial_inplace */ | |
| 1162 | 0, /* src_mask */ | |
| 1163 | 0xfffc, /* dst_mask */ | |
| 1164 | FALSE), /* pcrel_offset */ | |
| 1165 | ||
| 1166 | /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */ | |
| 1167 | HOWTO (R_PPC64_GOT16_LO_DS, /* type */ | |
| 1168 | 0, /* rightshift */ | |
| 1169 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1170 | 16, /* bitsize */ | |
| 1171 | FALSE, /* pc_relative */ | |
| 1172 | 0, /* bitpos */ | |
| 1173 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1174 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1175 | "R_PPC64_GOT16_LO_DS", /* name */ | |
| 1176 | FALSE, /* partial_inplace */ | |
| 1177 | 0, /* src_mask */ | |
| 1178 | 0xfffc, /* dst_mask */ | |
| 1179 | FALSE), /* pcrel_offset */ | |
| 1180 | ||
| 1181 | /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */ | |
| 1182 | HOWTO (R_PPC64_PLT16_LO_DS, /* type */ | |
| 1183 | 0, /* rightshift */ | |
| 1184 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1185 | 16, /* bitsize */ | |
| 1186 | FALSE, /* pc_relative */ | |
| 1187 | 0, /* bitpos */ | |
| 1188 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1189 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1190 | "R_PPC64_PLT16_LO_DS", /* name */ | |
| 1191 | FALSE, /* partial_inplace */ | |
| 1192 | 0, /* src_mask */ | |
| 1193 | 0xfffc, /* dst_mask */ | |
| 1194 | FALSE), /* pcrel_offset */ | |
| 1195 | ||
| 1196 | /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */ | |
| 1197 | HOWTO (R_PPC64_SECTOFF_DS, /* type */ | |
| 1198 | 0, /* rightshift */ | |
| 1199 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1200 | 16, /* bitsize */ | |
| 1201 | FALSE, /* pc_relative */ | |
| 1202 | 0, /* bitpos */ | |
| b80eed39 | 1203 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1204 | ppc64_elf_sectoff_reloc, /* special_function */ |
| 1205 | "R_PPC64_SECTOFF_DS", /* name */ | |
| 1206 | FALSE, /* partial_inplace */ | |
| 1207 | 0, /* src_mask */ | |
| 1208 | 0xfffc, /* dst_mask */ | |
| 1209 | FALSE), /* pcrel_offset */ | |
| 1210 | ||
| 1211 | /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */ | |
| 1212 | HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */ | |
| 1213 | 0, /* rightshift */ | |
| 1214 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1215 | 16, /* bitsize */ | |
| 1216 | FALSE, /* pc_relative */ | |
| 1217 | 0, /* bitpos */ | |
| 1218 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1219 | ppc64_elf_sectoff_reloc, /* special_function */ | |
| 1220 | "R_PPC64_SECTOFF_LO_DS",/* name */ | |
| 1221 | FALSE, /* partial_inplace */ | |
| 1222 | 0, /* src_mask */ | |
| 1223 | 0xfffc, /* dst_mask */ | |
| 1224 | FALSE), /* pcrel_offset */ | |
| 1225 | ||
| 1226 | /* Like R_PPC64_TOC16, but for instructions with a DS field. */ | |
| 1227 | HOWTO (R_PPC64_TOC16_DS, /* type */ | |
| 1228 | 0, /* rightshift */ | |
| 1229 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1230 | 16, /* bitsize */ | |
| 1231 | FALSE, /* pc_relative */ | |
| 1232 | 0, /* bitpos */ | |
| 1233 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1234 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1235 | "R_PPC64_TOC16_DS", /* name */ | |
| 1236 | FALSE, /* partial_inplace */ | |
| 1237 | 0, /* src_mask */ | |
| 1238 | 0xfffc, /* dst_mask */ | |
| 1239 | FALSE), /* pcrel_offset */ | |
| 1240 | ||
| 1241 | /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */ | |
| 1242 | HOWTO (R_PPC64_TOC16_LO_DS, /* type */ | |
| 1243 | 0, /* rightshift */ | |
| 1244 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1245 | 16, /* bitsize */ | |
| 1246 | FALSE, /* pc_relative */ | |
| 1247 | 0, /* bitpos */ | |
| 1248 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1249 | ppc64_elf_toc_reloc, /* special_function */ | |
| 1250 | "R_PPC64_TOC16_LO_DS", /* name */ | |
| 1251 | FALSE, /* partial_inplace */ | |
| 1252 | 0, /* src_mask */ | |
| 1253 | 0xfffc, /* dst_mask */ | |
| 1254 | FALSE), /* pcrel_offset */ | |
| 1255 | ||
| 1256 | /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */ | |
| 1257 | /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */ | |
| 6bfdb61b | 1258 | HOWTO (R_PPC64_PLTGOT16_DS, /* type */ |
| 411e1bfb AM |
1259 | 0, /* rightshift */ |
| 1260 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1261 | 16, /* bitsize */ | |
| 1262 | FALSE, /* pc_relative */ | |
| 1263 | 0, /* bitpos */ | |
| 1264 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1265 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1266 | "R_PPC64_PLTGOT16_DS", /* name */ | |
| 1267 | FALSE, /* partial_inplace */ | |
| 1268 | 0, /* src_mask */ | |
| 1269 | 0xfffc, /* dst_mask */ | |
| 1270 | FALSE), /* pcrel_offset */ | |
| 1271 | ||
| 1272 | /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */ | |
| 1273 | /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */ | |
| 1274 | HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */ | |
| 1275 | 0, /* rightshift */ | |
| 1276 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1277 | 16, /* bitsize */ | |
| 1278 | FALSE, /* pc_relative */ | |
| 1279 | 0, /* bitpos */ | |
| 1280 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1281 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1282 | "R_PPC64_PLTGOT16_LO_DS",/* name */ | |
| 1283 | FALSE, /* partial_inplace */ | |
| 1284 | 0, /* src_mask */ | |
| 1285 | 0xfffc, /* dst_mask */ | |
| 1286 | FALSE), /* pcrel_offset */ | |
| 1287 | ||
| 727fc41e | 1288 | /* Marker relocs for TLS. */ |
| 411e1bfb AM |
1289 | HOWTO (R_PPC64_TLS, |
| 1290 | 0, /* rightshift */ | |
| 1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1292 | 32, /* bitsize */ | |
| 1293 | FALSE, /* pc_relative */ | |
| 1294 | 0, /* bitpos */ | |
| 1295 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1296 | bfd_elf_generic_reloc, /* special_function */ | |
| 1297 | "R_PPC64_TLS", /* name */ | |
| 1298 | FALSE, /* partial_inplace */ | |
| 1299 | 0, /* src_mask */ | |
| 1300 | 0, /* dst_mask */ | |
| 1301 | FALSE), /* pcrel_offset */ | |
| 1302 | ||
| 727fc41e AM |
1303 | HOWTO (R_PPC64_TLSGD, |
| 1304 | 0, /* rightshift */ | |
| 1305 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1306 | 32, /* bitsize */ | |
| 1307 | FALSE, /* pc_relative */ | |
| 1308 | 0, /* bitpos */ | |
| 1309 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1310 | bfd_elf_generic_reloc, /* special_function */ | |
| 1311 | "R_PPC64_TLSGD", /* name */ | |
| 1312 | FALSE, /* partial_inplace */ | |
| 1313 | 0, /* src_mask */ | |
| 1314 | 0, /* dst_mask */ | |
| 1315 | FALSE), /* pcrel_offset */ | |
| 1316 | ||
| 1317 | HOWTO (R_PPC64_TLSLD, | |
| 1318 | 0, /* rightshift */ | |
| 1319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1320 | 32, /* bitsize */ | |
| 1321 | FALSE, /* pc_relative */ | |
| 1322 | 0, /* bitpos */ | |
| 1323 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1324 | bfd_elf_generic_reloc, /* special_function */ | |
| 1325 | "R_PPC64_TLSLD", /* name */ | |
| 1326 | FALSE, /* partial_inplace */ | |
| 1327 | 0, /* src_mask */ | |
| 1328 | 0, /* dst_mask */ | |
| 1329 | FALSE), /* pcrel_offset */ | |
| 1330 | ||
| 3b421ab3 AM |
1331 | HOWTO (R_PPC64_TOCSAVE, |
| 1332 | 0, /* rightshift */ | |
| 1333 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1334 | 32, /* bitsize */ | |
| 1335 | FALSE, /* pc_relative */ | |
| 1336 | 0, /* bitpos */ | |
| 1337 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1338 | bfd_elf_generic_reloc, /* special_function */ | |
| 1339 | "R_PPC64_TOCSAVE", /* name */ | |
| 1340 | FALSE, /* partial_inplace */ | |
| 1341 | 0, /* src_mask */ | |
| 1342 | 0, /* dst_mask */ | |
| 1343 | FALSE), /* pcrel_offset */ | |
| 1344 | ||
| 411e1bfb AM |
1345 | /* Computes the load module index of the load module that contains the |
| 1346 | definition of its TLS sym. */ | |
| 1347 | HOWTO (R_PPC64_DTPMOD64, | |
| 1348 | 0, /* rightshift */ | |
| 1349 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1350 | 64, /* bitsize */ | |
| 1351 | FALSE, /* pc_relative */ | |
| 1352 | 0, /* bitpos */ | |
| 1353 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1354 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1355 | "R_PPC64_DTPMOD64", /* name */ | |
| 1356 | FALSE, /* partial_inplace */ | |
| 1357 | 0, /* src_mask */ | |
| 1358 | ONES (64), /* dst_mask */ | |
| 1359 | FALSE), /* pcrel_offset */ | |
| 1360 | ||
| 1361 | /* Computes a dtv-relative displacement, the difference between the value | |
| 1362 | of sym+add and the base address of the thread-local storage block that | |
| 1363 | contains the definition of sym, minus 0x8000. */ | |
| 1364 | HOWTO (R_PPC64_DTPREL64, | |
| 1365 | 0, /* rightshift */ | |
| 1366 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1367 | 64, /* bitsize */ | |
| 1368 | FALSE, /* pc_relative */ | |
| 1369 | 0, /* bitpos */ | |
| 1370 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1371 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1372 | "R_PPC64_DTPREL64", /* name */ | |
| 1373 | FALSE, /* partial_inplace */ | |
| 1374 | 0, /* src_mask */ | |
| 1375 | ONES (64), /* dst_mask */ | |
| 1376 | FALSE), /* pcrel_offset */ | |
| 1377 | ||
| 1378 | /* A 16 bit dtprel reloc. */ | |
| 1379 | HOWTO (R_PPC64_DTPREL16, | |
| 1380 | 0, /* rightshift */ | |
| 1381 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1382 | 16, /* bitsize */ | |
| 1383 | FALSE, /* pc_relative */ | |
| 1384 | 0, /* bitpos */ | |
| 1385 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1386 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1387 | "R_PPC64_DTPREL16", /* name */ | |
| 1388 | FALSE, /* partial_inplace */ | |
| 1389 | 0, /* src_mask */ | |
| 1390 | 0xffff, /* dst_mask */ | |
| 1391 | FALSE), /* pcrel_offset */ | |
| 1392 | ||
| 1393 | /* Like DTPREL16, but no overflow. */ | |
| 1394 | HOWTO (R_PPC64_DTPREL16_LO, | |
| 1395 | 0, /* rightshift */ | |
| 1396 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1397 | 16, /* bitsize */ | |
| 1398 | FALSE, /* pc_relative */ | |
| 1399 | 0, /* bitpos */ | |
| 1400 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1401 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1402 | "R_PPC64_DTPREL16_LO", /* name */ | |
| 1403 | FALSE, /* partial_inplace */ | |
| 1404 | 0, /* src_mask */ | |
| 1405 | 0xffff, /* dst_mask */ | |
| 1406 | FALSE), /* pcrel_offset */ | |
| 1407 | ||
| 1408 | /* Like DTPREL16_LO, but next higher group of 16 bits. */ | |
| 1409 | HOWTO (R_PPC64_DTPREL16_HI, | |
| 1410 | 16, /* rightshift */ | |
| 1411 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1412 | 16, /* bitsize */ | |
| 1413 | FALSE, /* pc_relative */ | |
| 1414 | 0, /* bitpos */ | |
| f9c6b907 | 1415 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1416 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1417 | "R_PPC64_DTPREL16_HI", /* name */ | |
| 1418 | FALSE, /* partial_inplace */ | |
| 1419 | 0, /* src_mask */ | |
| 1420 | 0xffff, /* dst_mask */ | |
| 1421 | FALSE), /* pcrel_offset */ | |
| 1422 | ||
| 1423 | /* Like DTPREL16_HI, but adjust for low 16 bits. */ | |
| 1424 | HOWTO (R_PPC64_DTPREL16_HA, | |
| 1425 | 16, /* rightshift */ | |
| 1426 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1427 | 16, /* bitsize */ | |
| 1428 | FALSE, /* pc_relative */ | |
| 1429 | 0, /* bitpos */ | |
| f9c6b907 | 1430 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1431 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1432 | "R_PPC64_DTPREL16_HA", /* name */ | |
| 1433 | FALSE, /* partial_inplace */ | |
| 1434 | 0, /* src_mask */ | |
| 1435 | 0xffff, /* dst_mask */ | |
| 1436 | FALSE), /* pcrel_offset */ | |
| 1437 | ||
| 1438 | /* Like DTPREL16_HI, but next higher group of 16 bits. */ | |
| 1439 | HOWTO (R_PPC64_DTPREL16_HIGHER, | |
| 1440 | 32, /* rightshift */ | |
| 1441 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1442 | 16, /* bitsize */ | |
| 1443 | FALSE, /* pc_relative */ | |
| 1444 | 0, /* bitpos */ | |
| 1445 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1446 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1447 | "R_PPC64_DTPREL16_HIGHER", /* name */ | |
| 1448 | FALSE, /* partial_inplace */ | |
| 1449 | 0, /* src_mask */ | |
| 1450 | 0xffff, /* dst_mask */ | |
| 1451 | FALSE), /* pcrel_offset */ | |
| 1452 | ||
| 1453 | /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1454 | HOWTO (R_PPC64_DTPREL16_HIGHERA, | |
| 1455 | 32, /* rightshift */ | |
| 1456 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1457 | 16, /* bitsize */ | |
| 1458 | FALSE, /* pc_relative */ | |
| 1459 | 0, /* bitpos */ | |
| 1460 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1461 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1462 | "R_PPC64_DTPREL16_HIGHERA", /* name */ | |
| 1463 | FALSE, /* partial_inplace */ | |
| 1464 | 0, /* src_mask */ | |
| 1465 | 0xffff, /* dst_mask */ | |
| 1466 | FALSE), /* pcrel_offset */ | |
| 1467 | ||
| 1468 | /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1469 | HOWTO (R_PPC64_DTPREL16_HIGHEST, | |
| 1470 | 48, /* rightshift */ | |
| 1471 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1472 | 16, /* bitsize */ | |
| 1473 | FALSE, /* pc_relative */ | |
| 1474 | 0, /* bitpos */ | |
| 1475 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1476 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1477 | "R_PPC64_DTPREL16_HIGHEST", /* name */ | |
| 1478 | FALSE, /* partial_inplace */ | |
| 1479 | 0, /* src_mask */ | |
| 1480 | 0xffff, /* dst_mask */ | |
| 1481 | FALSE), /* pcrel_offset */ | |
| 1482 | ||
| 1483 | /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1484 | HOWTO (R_PPC64_DTPREL16_HIGHESTA, | |
| 1485 | 48, /* rightshift */ | |
| 1486 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1487 | 16, /* bitsize */ | |
| 1488 | FALSE, /* pc_relative */ | |
| 1489 | 0, /* bitpos */ | |
| 1490 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1491 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1492 | "R_PPC64_DTPREL16_HIGHESTA", /* name */ | |
| 1493 | FALSE, /* partial_inplace */ | |
| 1494 | 0, /* src_mask */ | |
| 1495 | 0xffff, /* dst_mask */ | |
| 1496 | FALSE), /* pcrel_offset */ | |
| 1497 | ||
| 1498 | /* Like DTPREL16, but for insns with a DS field. */ | |
| 1499 | HOWTO (R_PPC64_DTPREL16_DS, | |
| 1500 | 0, /* rightshift */ | |
| 1501 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1502 | 16, /* bitsize */ | |
| 1503 | FALSE, /* pc_relative */ | |
| 1504 | 0, /* bitpos */ | |
| 1505 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1506 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1507 | "R_PPC64_DTPREL16_DS", /* name */ | |
| 1508 | FALSE, /* partial_inplace */ | |
| 1509 | 0, /* src_mask */ | |
| 1510 | 0xfffc, /* dst_mask */ | |
| 1511 | FALSE), /* pcrel_offset */ | |
| 1512 | ||
| 1513 | /* Like DTPREL16_DS, but no overflow. */ | |
| 1514 | HOWTO (R_PPC64_DTPREL16_LO_DS, | |
| 1515 | 0, /* rightshift */ | |
| 1516 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1517 | 16, /* bitsize */ | |
| 1518 | FALSE, /* pc_relative */ | |
| 1519 | 0, /* bitpos */ | |
| 1520 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1521 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1522 | "R_PPC64_DTPREL16_LO_DS", /* name */ | |
| 1523 | FALSE, /* partial_inplace */ | |
| 1524 | 0, /* src_mask */ | |
| 1525 | 0xfffc, /* dst_mask */ | |
| 1526 | FALSE), /* pcrel_offset */ | |
| 1527 | ||
| 1528 | /* Computes a tp-relative displacement, the difference between the value of | |
| 1529 | sym+add and the value of the thread pointer (r13). */ | |
| 1530 | HOWTO (R_PPC64_TPREL64, | |
| 1531 | 0, /* rightshift */ | |
| 1532 | 4, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1533 | 64, /* bitsize */ | |
| 1534 | FALSE, /* pc_relative */ | |
| 1535 | 0, /* bitpos */ | |
| 1536 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1537 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1538 | "R_PPC64_TPREL64", /* name */ | |
| 1539 | FALSE, /* partial_inplace */ | |
| 1540 | 0, /* src_mask */ | |
| 1541 | ONES (64), /* dst_mask */ | |
| 1542 | FALSE), /* pcrel_offset */ | |
| 1543 | ||
| 1544 | /* A 16 bit tprel reloc. */ | |
| 1545 | HOWTO (R_PPC64_TPREL16, | |
| 1546 | 0, /* rightshift */ | |
| 1547 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1548 | 16, /* bitsize */ | |
| 1549 | FALSE, /* pc_relative */ | |
| 1550 | 0, /* bitpos */ | |
| 1551 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1552 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1553 | "R_PPC64_TPREL16", /* name */ | |
| 1554 | FALSE, /* partial_inplace */ | |
| 1555 | 0, /* src_mask */ | |
| 1556 | 0xffff, /* dst_mask */ | |
| 1557 | FALSE), /* pcrel_offset */ | |
| 1558 | ||
| 1559 | /* Like TPREL16, but no overflow. */ | |
| 1560 | HOWTO (R_PPC64_TPREL16_LO, | |
| 1561 | 0, /* rightshift */ | |
| 1562 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1563 | 16, /* bitsize */ | |
| 1564 | FALSE, /* pc_relative */ | |
| 1565 | 0, /* bitpos */ | |
| 1566 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1567 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1568 | "R_PPC64_TPREL16_LO", /* name */ | |
| 1569 | FALSE, /* partial_inplace */ | |
| 1570 | 0, /* src_mask */ | |
| 1571 | 0xffff, /* dst_mask */ | |
| 1572 | FALSE), /* pcrel_offset */ | |
| 1573 | ||
| 1574 | /* Like TPREL16_LO, but next higher group of 16 bits. */ | |
| 1575 | HOWTO (R_PPC64_TPREL16_HI, | |
| 1576 | 16, /* rightshift */ | |
| 1577 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1578 | 16, /* bitsize */ | |
| 1579 | FALSE, /* pc_relative */ | |
| 1580 | 0, /* bitpos */ | |
| f9c6b907 | 1581 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1582 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1583 | "R_PPC64_TPREL16_HI", /* name */ | |
| 1584 | FALSE, /* partial_inplace */ | |
| 1585 | 0, /* src_mask */ | |
| 1586 | 0xffff, /* dst_mask */ | |
| 1587 | FALSE), /* pcrel_offset */ | |
| 1588 | ||
| 1589 | /* Like TPREL16_HI, but adjust for low 16 bits. */ | |
| 1590 | HOWTO (R_PPC64_TPREL16_HA, | |
| 1591 | 16, /* rightshift */ | |
| 1592 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1593 | 16, /* bitsize */ | |
| 1594 | FALSE, /* pc_relative */ | |
| 1595 | 0, /* bitpos */ | |
| f9c6b907 | 1596 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1597 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1598 | "R_PPC64_TPREL16_HA", /* name */ | |
| 1599 | FALSE, /* partial_inplace */ | |
| 1600 | 0, /* src_mask */ | |
| 1601 | 0xffff, /* dst_mask */ | |
| 1602 | FALSE), /* pcrel_offset */ | |
| 1603 | ||
| 1604 | /* Like TPREL16_HI, but next higher group of 16 bits. */ | |
| 1605 | HOWTO (R_PPC64_TPREL16_HIGHER, | |
| 1606 | 32, /* rightshift */ | |
| 1607 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1608 | 16, /* bitsize */ | |
| 1609 | FALSE, /* pc_relative */ | |
| 1610 | 0, /* bitpos */ | |
| 1611 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1612 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1613 | "R_PPC64_TPREL16_HIGHER", /* name */ | |
| 1614 | FALSE, /* partial_inplace */ | |
| 1615 | 0, /* src_mask */ | |
| 1616 | 0xffff, /* dst_mask */ | |
| 1617 | FALSE), /* pcrel_offset */ | |
| 1618 | ||
| 1619 | /* Like TPREL16_HIGHER, but adjust for low 16 bits. */ | |
| 1620 | HOWTO (R_PPC64_TPREL16_HIGHERA, | |
| 1621 | 32, /* rightshift */ | |
| 1622 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1623 | 16, /* bitsize */ | |
| 1624 | FALSE, /* pc_relative */ | |
| 1625 | 0, /* bitpos */ | |
| 1626 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1627 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1628 | "R_PPC64_TPREL16_HIGHERA", /* name */ | |
| 1629 | FALSE, /* partial_inplace */ | |
| 1630 | 0, /* src_mask */ | |
| 1631 | 0xffff, /* dst_mask */ | |
| 1632 | FALSE), /* pcrel_offset */ | |
| 1633 | ||
| 1634 | /* Like TPREL16_HIGHER, but next higher group of 16 bits. */ | |
| 1635 | HOWTO (R_PPC64_TPREL16_HIGHEST, | |
| 1636 | 48, /* rightshift */ | |
| 1637 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1638 | 16, /* bitsize */ | |
| 1639 | FALSE, /* pc_relative */ | |
| 1640 | 0, /* bitpos */ | |
| 1641 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1642 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1643 | "R_PPC64_TPREL16_HIGHEST", /* name */ | |
| 1644 | FALSE, /* partial_inplace */ | |
| 1645 | 0, /* src_mask */ | |
| 1646 | 0xffff, /* dst_mask */ | |
| 1647 | FALSE), /* pcrel_offset */ | |
| 1648 | ||
| 1649 | /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */ | |
| 1650 | HOWTO (R_PPC64_TPREL16_HIGHESTA, | |
| 1651 | 48, /* rightshift */ | |
| 1652 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1653 | 16, /* bitsize */ | |
| 1654 | FALSE, /* pc_relative */ | |
| 1655 | 0, /* bitpos */ | |
| 1656 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1657 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1658 | "R_PPC64_TPREL16_HIGHESTA", /* name */ | |
| 1659 | FALSE, /* partial_inplace */ | |
| 1660 | 0, /* src_mask */ | |
| 1661 | 0xffff, /* dst_mask */ | |
| 1662 | FALSE), /* pcrel_offset */ | |
| 1663 | ||
| 1664 | /* Like TPREL16, but for insns with a DS field. */ | |
| 1665 | HOWTO (R_PPC64_TPREL16_DS, | |
| 1666 | 0, /* rightshift */ | |
| 1667 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1668 | 16, /* bitsize */ | |
| 1669 | FALSE, /* pc_relative */ | |
| 1670 | 0, /* bitpos */ | |
| 1671 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1672 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1673 | "R_PPC64_TPREL16_DS", /* name */ | |
| 1674 | FALSE, /* partial_inplace */ | |
| 1675 | 0, /* src_mask */ | |
| 1676 | 0xfffc, /* dst_mask */ | |
| 1677 | FALSE), /* pcrel_offset */ | |
| 1678 | ||
| 1679 | /* Like TPREL16_DS, but no overflow. */ | |
| 1680 | HOWTO (R_PPC64_TPREL16_LO_DS, | |
| 1681 | 0, /* rightshift */ | |
| 1682 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1683 | 16, /* bitsize */ | |
| 1684 | FALSE, /* pc_relative */ | |
| 1685 | 0, /* bitpos */ | |
| 1686 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1687 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1688 | "R_PPC64_TPREL16_LO_DS", /* name */ | |
| 1689 | FALSE, /* partial_inplace */ | |
| 1690 | 0, /* src_mask */ | |
| 1691 | 0xfffc, /* dst_mask */ | |
| 1692 | FALSE), /* pcrel_offset */ | |
| 1693 | ||
| 1694 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, | |
| 1695 | with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset | |
| 1696 | to the first entry relative to the TOC base (r2). */ | |
| 1697 | HOWTO (R_PPC64_GOT_TLSGD16, | |
| 1698 | 0, /* rightshift */ | |
| 1699 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1700 | 16, /* bitsize */ | |
| 1701 | FALSE, /* pc_relative */ | |
| 1702 | 0, /* bitpos */ | |
| 1703 | complain_overflow_signed, /* complain_on_overflow */ | |
| 1704 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1705 | "R_PPC64_GOT_TLSGD16", /* name */ | |
| b34976b6 | 1706 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1707 | 0, /* src_mask */ |
| 1708 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1709 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1710 | |
| 411e1bfb AM |
1711 | /* Like GOT_TLSGD16, but no overflow. */ |
| 1712 | HOWTO (R_PPC64_GOT_TLSGD16_LO, | |
| 5bd4f169 AM |
1713 | 0, /* rightshift */ |
| 1714 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1715 | 16, /* bitsize */ | |
| b34976b6 | 1716 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1717 | 0, /* bitpos */ |
| 1718 | complain_overflow_dont, /* complain_on_overflow */ | |
| 805fc799 | 1719 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1720 | "R_PPC64_GOT_TLSGD16_LO", /* name */ |
| b34976b6 | 1721 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1722 | 0, /* src_mask */ |
| 1723 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1724 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1725 | |
| 411e1bfb AM |
1726 | /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */ |
| 1727 | HOWTO (R_PPC64_GOT_TLSGD16_HI, | |
| 5bd4f169 AM |
1728 | 16, /* rightshift */ |
| 1729 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1730 | 16, /* bitsize */ | |
| b34976b6 | 1731 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1732 | 0, /* bitpos */ |
| f9c6b907 | 1733 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1734 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1735 | "R_PPC64_GOT_TLSGD16_HI", /* name */ |
| b34976b6 | 1736 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1737 | 0, /* src_mask */ |
| 1738 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1739 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1740 | |
| 411e1bfb AM |
1741 | /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */ |
| 1742 | HOWTO (R_PPC64_GOT_TLSGD16_HA, | |
| 5bd4f169 AM |
1743 | 16, /* rightshift */ |
| 1744 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1745 | 16, /* bitsize */ | |
| b34976b6 | 1746 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1747 | 0, /* bitpos */ |
| f9c6b907 | 1748 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1749 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1750 | "R_PPC64_GOT_TLSGD16_HA", /* name */ |
| b34976b6 | 1751 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
1752 | 0, /* src_mask */ |
| 1753 | 0xffff, /* dst_mask */ | |
| b34976b6 | 1754 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1755 | |
| 411e1bfb AM |
1756 | /* Allocates two contiguous entries in the GOT to hold a tls_index structure, |
| 1757 | with values (sym+add)@dtpmod and zero, and computes the offset to the | |
| 1758 | first entry relative to the TOC base (r2). */ | |
| 1759 | HOWTO (R_PPC64_GOT_TLSLD16, | |
| 5bd4f169 AM |
1760 | 0, /* rightshift */ |
| 1761 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1762 | 16, /* bitsize */ | |
| b34976b6 | 1763 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1764 | 0, /* bitpos */ |
| 411e1bfb AM |
1765 | complain_overflow_signed, /* complain_on_overflow */ |
| 1766 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1767 | "R_PPC64_GOT_TLSLD16", /* name */ | |
| b34976b6 | 1768 | FALSE, /* partial_inplace */ |
| d006db6c | 1769 | 0, /* src_mask */ |
| 411e1bfb | 1770 | 0xffff, /* dst_mask */ |
| b34976b6 | 1771 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1772 | |
| 411e1bfb AM |
1773 | /* Like GOT_TLSLD16, but no overflow. */ |
| 1774 | HOWTO (R_PPC64_GOT_TLSLD16_LO, | |
| 5bd4f169 AM |
1775 | 0, /* rightshift */ |
| 1776 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1777 | 16, /* bitsize */ | |
| b34976b6 | 1778 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1779 | 0, /* bitpos */ |
| 411e1bfb AM |
1780 | complain_overflow_dont, /* complain_on_overflow */ |
| 1781 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1782 | "R_PPC64_GOT_TLSLD16_LO", /* name */ | |
| b34976b6 | 1783 | FALSE, /* partial_inplace */ |
| d006db6c | 1784 | 0, /* src_mask */ |
| 411e1bfb | 1785 | 0xffff, /* dst_mask */ |
| b34976b6 | 1786 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1787 | |
| 411e1bfb AM |
1788 | /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */ |
| 1789 | HOWTO (R_PPC64_GOT_TLSLD16_HI, | |
| 1790 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1791 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1792 | 16, /* bitsize */ | |
| b34976b6 | 1793 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1794 | 0, /* bitpos */ |
| f9c6b907 | 1795 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1796 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1797 | "R_PPC64_GOT_TLSLD16_HI", /* name */ |
| b34976b6 | 1798 | FALSE, /* partial_inplace */ |
| d006db6c | 1799 | 0, /* src_mask */ |
| 411e1bfb | 1800 | 0xffff, /* dst_mask */ |
| b34976b6 | 1801 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1802 | |
| 411e1bfb AM |
1803 | /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */ |
| 1804 | HOWTO (R_PPC64_GOT_TLSLD16_HA, | |
| 1805 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1806 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1807 | 16, /* bitsize */ | |
| b34976b6 | 1808 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1809 | 0, /* bitpos */ |
| f9c6b907 | 1810 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1811 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1812 | "R_PPC64_GOT_TLSLD16_HA", /* name */ |
| b34976b6 | 1813 | FALSE, /* partial_inplace */ |
| d006db6c | 1814 | 0, /* src_mask */ |
| 411e1bfb | 1815 | 0xffff, /* dst_mask */ |
| b34976b6 | 1816 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1817 | |
| 411e1bfb AM |
1818 | /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes |
| 1819 | the offset to the entry relative to the TOC base (r2). */ | |
| 1820 | HOWTO (R_PPC64_GOT_DTPREL16_DS, | |
| 5bd4f169 AM |
1821 | 0, /* rightshift */ |
| 1822 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1823 | 16, /* bitsize */ | |
| b34976b6 | 1824 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1825 | 0, /* bitpos */ |
| 411e1bfb | 1826 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1827 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1828 | "R_PPC64_GOT_DTPREL16_DS", /* name */ |
| b34976b6 | 1829 | FALSE, /* partial_inplace */ |
| d006db6c | 1830 | 0, /* src_mask */ |
| 5bd4f169 | 1831 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1832 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1833 | |
| 411e1bfb AM |
1834 | /* Like GOT_DTPREL16_DS, but no overflow. */ |
| 1835 | HOWTO (R_PPC64_GOT_DTPREL16_LO_DS, | |
| 5bd4f169 | 1836 | 0, /* rightshift */ |
| c061c2d8 AM |
1837 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1838 | 16, /* bitsize */ | |
| b34976b6 | 1839 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1840 | 0, /* bitpos */ |
| 411e1bfb AM |
1841 | complain_overflow_dont, /* complain_on_overflow */ |
| 1842 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1843 | "R_PPC64_GOT_DTPREL16_LO_DS", /* name */ | |
| b34976b6 | 1844 | FALSE, /* partial_inplace */ |
| d006db6c | 1845 | 0, /* src_mask */ |
| c061c2d8 | 1846 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1847 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1848 | |
| 411e1bfb AM |
1849 | /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1850 | HOWTO (R_PPC64_GOT_DTPREL16_HI, | |
| 1851 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1852 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1853 | 16, /* bitsize */ | |
| b34976b6 | 1854 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1855 | 0, /* bitpos */ |
| f9c6b907 | 1856 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1857 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1858 | "R_PPC64_GOT_DTPREL16_HI", /* name */ | |
| b34976b6 | 1859 | FALSE, /* partial_inplace */ |
| d006db6c | 1860 | 0, /* src_mask */ |
| 411e1bfb | 1861 | 0xffff, /* dst_mask */ |
| b34976b6 | 1862 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1863 | |
| 411e1bfb AM |
1864 | /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */ |
| 1865 | HOWTO (R_PPC64_GOT_DTPREL16_HA, | |
| 1866 | 16, /* rightshift */ | |
| 1867 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1868 | 16, /* bitsize */ | |
| 1869 | FALSE, /* pc_relative */ | |
| 1870 | 0, /* bitpos */ | |
| f9c6b907 | 1871 | complain_overflow_signed, /* complain_on_overflow */ |
| 411e1bfb AM |
1872 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1873 | "R_PPC64_GOT_DTPREL16_HA", /* name */ | |
| 1874 | FALSE, /* partial_inplace */ | |
| 1875 | 0, /* src_mask */ | |
| 1876 | 0xffff, /* dst_mask */ | |
| 1877 | FALSE), /* pcrel_offset */ | |
| 1878 | ||
| 1879 | /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the | |
| 1880 | offset to the entry relative to the TOC base (r2). */ | |
| 1881 | HOWTO (R_PPC64_GOT_TPREL16_DS, | |
| 5bd4f169 AM |
1882 | 0, /* rightshift */ |
| 1883 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1884 | 16, /* bitsize */ | |
| b34976b6 | 1885 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1886 | 0, /* bitpos */ |
| 1887 | complain_overflow_signed, /* complain_on_overflow */ | |
| 411e1bfb AM |
1888 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1889 | "R_PPC64_GOT_TPREL16_DS", /* name */ | |
| b34976b6 | 1890 | FALSE, /* partial_inplace */ |
| d006db6c | 1891 | 0, /* src_mask */ |
| ad8e1ba5 | 1892 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1893 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1894 | |
| 411e1bfb AM |
1895 | /* Like GOT_TPREL16_DS, but no overflow. */ |
| 1896 | HOWTO (R_PPC64_GOT_TPREL16_LO_DS, | |
| 5bd4f169 AM |
1897 | 0, /* rightshift */ |
| 1898 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1899 | 16, /* bitsize */ | |
| b34976b6 | 1900 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
1901 | 0, /* bitpos */ |
| 1902 | complain_overflow_dont, /* complain_on_overflow */ | |
| 411e1bfb AM |
1903 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 1904 | "R_PPC64_GOT_TPREL16_LO_DS", /* name */ | |
| b34976b6 | 1905 | FALSE, /* partial_inplace */ |
| d006db6c | 1906 | 0, /* src_mask */ |
| ad8e1ba5 | 1907 | 0xfffc, /* dst_mask */ |
| b34976b6 | 1908 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1909 | |
| 411e1bfb AM |
1910 | /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */ |
| 1911 | HOWTO (R_PPC64_GOT_TPREL16_HI, | |
| 1912 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1913 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1914 | 16, /* bitsize */ | |
| b34976b6 | 1915 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1916 | 0, /* bitpos */ |
| f9c6b907 | 1917 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1918 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1919 | "R_PPC64_GOT_TPREL16_HI", /* name */ |
| b34976b6 | 1920 | FALSE, /* partial_inplace */ |
| d006db6c | 1921 | 0, /* src_mask */ |
| 411e1bfb | 1922 | 0xffff, /* dst_mask */ |
| b34976b6 | 1923 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1924 | |
| 411e1bfb AM |
1925 | /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */ |
| 1926 | HOWTO (R_PPC64_GOT_TPREL16_HA, | |
| 1927 | 16, /* rightshift */ | |
| 5bd4f169 AM |
1928 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1929 | 16, /* bitsize */ | |
| b34976b6 | 1930 | FALSE, /* pc_relative */ |
| 5bd4f169 | 1931 | 0, /* bitpos */ |
| f9c6b907 | 1932 | complain_overflow_signed, /* complain_on_overflow */ |
| 805fc799 | 1933 | ppc64_elf_unhandled_reloc, /* special_function */ |
| 411e1bfb | 1934 | "R_PPC64_GOT_TPREL16_HA", /* name */ |
| b34976b6 | 1935 | FALSE, /* partial_inplace */ |
| d006db6c | 1936 | 0, /* src_mask */ |
| 411e1bfb | 1937 | 0xffff, /* dst_mask */ |
| b34976b6 | 1938 | FALSE), /* pcrel_offset */ |
| 5bd4f169 | 1939 | |
| 25f23106 AM |
1940 | HOWTO (R_PPC64_JMP_IREL, /* type */ |
| 1941 | 0, /* rightshift */ | |
| 1942 | 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1943 | 0, /* bitsize */ | |
| 1944 | FALSE, /* pc_relative */ | |
| 1945 | 0, /* bitpos */ | |
| 1946 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1947 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 1948 | "R_PPC64_JMP_IREL", /* name */ | |
| 1949 | FALSE, /* partial_inplace */ | |
| 1950 | 0, /* src_mask */ | |
| 1951 | 0, /* dst_mask */ | |
| 1952 | FALSE), /* pcrel_offset */ | |
| 1953 | ||
| e054468f AM |
1954 | HOWTO (R_PPC64_IRELATIVE, /* type */ |
| 1955 | 0, /* rightshift */ | |
| 1956 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 1957 | 64, /* bitsize */ | |
| 1958 | FALSE, /* pc_relative */ | |
| 1959 | 0, /* bitpos */ | |
| 1960 | complain_overflow_dont, /* complain_on_overflow */ | |
| 1961 | bfd_elf_generic_reloc, /* special_function */ | |
| 1962 | "R_PPC64_IRELATIVE", /* name */ | |
| 1963 | FALSE, /* partial_inplace */ | |
| 1964 | 0, /* src_mask */ | |
| 1965 | ONES (64), /* dst_mask */ | |
| 1966 | FALSE), /* pcrel_offset */ | |
| 1967 | ||
| 25f23106 AM |
1968 | /* A 16 bit relative relocation. */ |
| 1969 | HOWTO (R_PPC64_REL16, /* type */ | |
| 1970 | 0, /* rightshift */ | |
| 1971 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1972 | 16, /* bitsize */ | |
| 1973 | TRUE, /* pc_relative */ | |
| 1974 | 0, /* bitpos */ | |
| b80eed39 | 1975 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
1976 | bfd_elf_generic_reloc, /* special_function */ |
| 1977 | "R_PPC64_REL16", /* name */ | |
| 1978 | FALSE, /* partial_inplace */ | |
| 1979 | 0, /* src_mask */ | |
| 1980 | 0xffff, /* dst_mask */ | |
| 1981 | TRUE), /* pcrel_offset */ | |
| 1982 | ||
| 1983 | /* A 16 bit relative relocation without overflow. */ | |
| 1984 | HOWTO (R_PPC64_REL16_LO, /* type */ | |
| 1985 | 0, /* rightshift */ | |
| 1986 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 1987 | 16, /* bitsize */ | |
| 1988 | TRUE, /* pc_relative */ | |
| 1989 | 0, /* bitpos */ | |
| 1990 | complain_overflow_dont,/* complain_on_overflow */ | |
| 1991 | bfd_elf_generic_reloc, /* special_function */ | |
| 1992 | "R_PPC64_REL16_LO", /* name */ | |
| 1993 | FALSE, /* partial_inplace */ | |
| 1994 | 0, /* src_mask */ | |
| 1995 | 0xffff, /* dst_mask */ | |
| 1996 | TRUE), /* pcrel_offset */ | |
| 1997 | ||
| 1998 | /* The high order 16 bits of a relative address. */ | |
| 1999 | HOWTO (R_PPC64_REL16_HI, /* type */ | |
| 2000 | 16, /* rightshift */ | |
| 2001 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2002 | 16, /* bitsize */ | |
| 2003 | TRUE, /* pc_relative */ | |
| 2004 | 0, /* bitpos */ | |
| f9c6b907 | 2005 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
2006 | bfd_elf_generic_reloc, /* special_function */ |
| 2007 | "R_PPC64_REL16_HI", /* name */ | |
| 2008 | FALSE, /* partial_inplace */ | |
| 2009 | 0, /* src_mask */ | |
| 2010 | 0xffff, /* dst_mask */ | |
| 2011 | TRUE), /* pcrel_offset */ | |
| 2012 | ||
| 2013 | /* The high order 16 bits of a relative address, plus 1 if the contents of | |
| 2014 | the low 16 bits, treated as a signed number, is negative. */ | |
| 2015 | HOWTO (R_PPC64_REL16_HA, /* type */ | |
| 2016 | 16, /* rightshift */ | |
| 2017 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2018 | 16, /* bitsize */ | |
| 2019 | TRUE, /* pc_relative */ | |
| 2020 | 0, /* bitpos */ | |
| f9c6b907 | 2021 | complain_overflow_signed, /* complain_on_overflow */ |
| 25f23106 AM |
2022 | ppc64_elf_ha_reloc, /* special_function */ |
| 2023 | "R_PPC64_REL16_HA", /* name */ | |
| 2024 | FALSE, /* partial_inplace */ | |
| 2025 | 0, /* src_mask */ | |
| 2026 | 0xffff, /* dst_mask */ | |
| 2027 | TRUE), /* pcrel_offset */ | |
| 2028 | ||
| a680de9a PB |
2029 | /* Like R_PPC64_REL16_HA but for split field in addpcis. */ |
| 2030 | HOWTO (R_PPC64_REL16DX_HA, /* type */ | |
| 2031 | 16, /* rightshift */ | |
| 2032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2033 | 16, /* bitsize */ | |
| 2034 | TRUE, /* pc_relative */ | |
| 2035 | 0, /* bitpos */ | |
| 2036 | complain_overflow_signed, /* complain_on_overflow */ | |
| 2037 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2038 | "R_PPC64_REL16DX_HA", /* name */ | |
| 2039 | FALSE, /* partial_inplace */ | |
| 2040 | 0, /* src_mask */ | |
| 2041 | 0x1fffc1, /* dst_mask */ | |
| 2042 | TRUE), /* pcrel_offset */ | |
| 2043 | ||
| f9c6b907 AM |
2044 | /* Like R_PPC64_ADDR16_HI, but no overflow. */ |
| 2045 | HOWTO (R_PPC64_ADDR16_HIGH, /* type */ | |
| 2046 | 16, /* rightshift */ | |
| 2047 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2048 | 16, /* bitsize */ | |
| 2049 | FALSE, /* pc_relative */ | |
| 2050 | 0, /* bitpos */ | |
| 2051 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2052 | bfd_elf_generic_reloc, /* special_function */ | |
| 2053 | "R_PPC64_ADDR16_HIGH", /* name */ | |
| 2054 | FALSE, /* partial_inplace */ | |
| 2055 | 0, /* src_mask */ | |
| 2056 | 0xffff, /* dst_mask */ | |
| 2057 | FALSE), /* pcrel_offset */ | |
| 2058 | ||
| 2059 | /* Like R_PPC64_ADDR16_HA, but no overflow. */ | |
| 2060 | HOWTO (R_PPC64_ADDR16_HIGHA, /* type */ | |
| 2061 | 16, /* rightshift */ | |
| 2062 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2063 | 16, /* bitsize */ | |
| 2064 | FALSE, /* pc_relative */ | |
| 2065 | 0, /* bitpos */ | |
| 2066 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2067 | ppc64_elf_ha_reloc, /* special_function */ | |
| 2068 | "R_PPC64_ADDR16_HIGHA", /* name */ | |
| 2069 | FALSE, /* partial_inplace */ | |
| 2070 | 0, /* src_mask */ | |
| 2071 | 0xffff, /* dst_mask */ | |
| 2072 | FALSE), /* pcrel_offset */ | |
| 2073 | ||
| 2074 | /* Like R_PPC64_DTPREL16_HI, but no overflow. */ | |
| 2075 | HOWTO (R_PPC64_DTPREL16_HIGH, | |
| 2076 | 16, /* rightshift */ | |
| 2077 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2078 | 16, /* bitsize */ | |
| 2079 | FALSE, /* pc_relative */ | |
| 2080 | 0, /* bitpos */ | |
| 2081 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2082 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2083 | "R_PPC64_DTPREL16_HIGH", /* name */ | |
| 2084 | FALSE, /* partial_inplace */ | |
| 2085 | 0, /* src_mask */ | |
| 2086 | 0xffff, /* dst_mask */ | |
| 2087 | FALSE), /* pcrel_offset */ | |
| 2088 | ||
| 2089 | /* Like R_PPC64_DTPREL16_HA, but no overflow. */ | |
| 2090 | HOWTO (R_PPC64_DTPREL16_HIGHA, | |
| 2091 | 16, /* rightshift */ | |
| 2092 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2093 | 16, /* bitsize */ | |
| 2094 | FALSE, /* pc_relative */ | |
| 2095 | 0, /* bitpos */ | |
| 2096 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2097 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2098 | "R_PPC64_DTPREL16_HIGHA", /* name */ | |
| 2099 | FALSE, /* partial_inplace */ | |
| 2100 | 0, /* src_mask */ | |
| 2101 | 0xffff, /* dst_mask */ | |
| 2102 | FALSE), /* pcrel_offset */ | |
| 2103 | ||
| 2104 | /* Like R_PPC64_TPREL16_HI, but no overflow. */ | |
| 2105 | HOWTO (R_PPC64_TPREL16_HIGH, | |
| 2106 | 16, /* rightshift */ | |
| 2107 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2108 | 16, /* bitsize */ | |
| 2109 | FALSE, /* pc_relative */ | |
| 2110 | 0, /* bitpos */ | |
| 2111 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2112 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2113 | "R_PPC64_TPREL16_HIGH", /* name */ | |
| 2114 | FALSE, /* partial_inplace */ | |
| 2115 | 0, /* src_mask */ | |
| 2116 | 0xffff, /* dst_mask */ | |
| 2117 | FALSE), /* pcrel_offset */ | |
| 2118 | ||
| 2119 | /* Like R_PPC64_TPREL16_HA, but no overflow. */ | |
| 2120 | HOWTO (R_PPC64_TPREL16_HIGHA, | |
| 2121 | 16, /* rightshift */ | |
| 2122 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2123 | 16, /* bitsize */ | |
| 2124 | FALSE, /* pc_relative */ | |
| 2125 | 0, /* bitpos */ | |
| 2126 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2127 | ppc64_elf_unhandled_reloc, /* special_function */ | |
| 2128 | "R_PPC64_TPREL16_HIGHA", /* name */ | |
| 2129 | FALSE, /* partial_inplace */ | |
| 2130 | 0, /* src_mask */ | |
| 2131 | 0xffff, /* dst_mask */ | |
| 2132 | FALSE), /* pcrel_offset */ | |
| 2133 | ||
| 006589cf AM |
2134 | /* Marker reloc on ELFv2 large-model function entry. */ |
| 2135 | HOWTO (R_PPC64_ENTRY, | |
| 2136 | 0, /* rightshift */ | |
| 2137 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2138 | 32, /* bitsize */ | |
| 2139 | FALSE, /* pc_relative */ | |
| 2140 | 0, /* bitpos */ | |
| 2141 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2142 | bfd_elf_generic_reloc, /* special_function */ | |
| 2143 | "R_PPC64_ENTRY", /* name */ | |
| 2144 | FALSE, /* partial_inplace */ | |
| 2145 | 0, /* src_mask */ | |
| 2146 | 0, /* dst_mask */ | |
| 2147 | FALSE), /* pcrel_offset */ | |
| 2148 | ||
| 45965137 AM |
2149 | /* Like ADDR64, but use local entry point of function. */ |
| 2150 | HOWTO (R_PPC64_ADDR64_LOCAL, /* type */ | |
| 2151 | 0, /* rightshift */ | |
| 2152 | 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */ | |
| 2153 | 64, /* bitsize */ | |
| 2154 | FALSE, /* pc_relative */ | |
| 2155 | 0, /* bitpos */ | |
| 2156 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2157 | bfd_elf_generic_reloc, /* special_function */ | |
| 2158 | "R_PPC64_ADDR64_LOCAL", /* name */ | |
| 2159 | FALSE, /* partial_inplace */ | |
| 2160 | 0, /* src_mask */ | |
| 2161 | ONES (64), /* dst_mask */ | |
| 2162 | FALSE), /* pcrel_offset */ | |
| 2163 | ||
| 5bd4f169 AM |
2164 | /* GNU extension to record C++ vtable hierarchy. */ |
| 2165 | HOWTO (R_PPC64_GNU_VTINHERIT, /* type */ | |
| 2166 | 0, /* rightshift */ | |
| 2167 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2168 | 0, /* bitsize */ | |
| b34976b6 | 2169 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2170 | 0, /* bitpos */ |
| 2171 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2172 | NULL, /* special_function */ | |
| 2173 | "R_PPC64_GNU_VTINHERIT", /* name */ | |
| b34976b6 | 2174 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2175 | 0, /* src_mask */ |
| 2176 | 0, /* dst_mask */ | |
| b34976b6 | 2177 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2178 | |
| 2179 | /* GNU extension to record C++ vtable member usage. */ | |
| 2180 | HOWTO (R_PPC64_GNU_VTENTRY, /* type */ | |
| 2181 | 0, /* rightshift */ | |
| 2182 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
| 2183 | 0, /* bitsize */ | |
| b34976b6 | 2184 | FALSE, /* pc_relative */ |
| 5bd4f169 AM |
2185 | 0, /* bitpos */ |
| 2186 | complain_overflow_dont, /* complain_on_overflow */ | |
| 2187 | NULL, /* special_function */ | |
| 2188 | "R_PPC64_GNU_VTENTRY", /* name */ | |
| b34976b6 | 2189 | FALSE, /* partial_inplace */ |
| 5bd4f169 AM |
2190 | 0, /* src_mask */ |
| 2191 | 0, /* dst_mask */ | |
| b34976b6 | 2192 | FALSE), /* pcrel_offset */ |
| 5bd4f169 AM |
2193 | }; |
| 2194 | ||
| 2195 | \f | |
| 2196 | /* Initialize the ppc64_elf_howto_table, so that linear accesses can | |
| 2197 | be done. */ | |
| 2198 | ||
| 2199 | static void | |
| 4ce794b7 | 2200 | ppc_howto_init (void) |
| 5bd4f169 AM |
2201 | { |
| 2202 | unsigned int i, type; | |
| 2203 | ||
| a4b6fadd | 2204 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
| 5bd4f169 AM |
2205 | { |
| 2206 | type = ppc64_elf_howto_raw[i].type; | |
| a4b6fadd | 2207 | BFD_ASSERT (type < ARRAY_SIZE (ppc64_elf_howto_table)); |
| 5bd4f169 AM |
2208 | ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i]; |
| 2209 | } | |
| 2210 | } | |
| 2211 | ||
| 2212 | static reloc_howto_type * | |
| 4ce794b7 AM |
2213 | ppc64_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 2214 | bfd_reloc_code_real_type code) | |
| 5bd4f169 | 2215 | { |
| 411e1bfb | 2216 | enum elf_ppc64_reloc_type r = R_PPC64_NONE; |
| 5bd4f169 AM |
2217 | |
| 2218 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 2219 | /* Initialize howto table if needed. */ | |
| 2220 | ppc_howto_init (); | |
| 2221 | ||
| 4ce794b7 | 2222 | switch (code) |
| 5bd4f169 AM |
2223 | { |
| 2224 | default: | |
| 4ce794b7 | 2225 | return NULL; |
| 5bd4f169 | 2226 | |
| 411e1bfb AM |
2227 | case BFD_RELOC_NONE: r = R_PPC64_NONE; |
| 2228 | break; | |
| 2229 | case BFD_RELOC_32: r = R_PPC64_ADDR32; | |
| 2230 | break; | |
| 2231 | case BFD_RELOC_PPC_BA26: r = R_PPC64_ADDR24; | |
| 2232 | break; | |
| 2233 | case BFD_RELOC_16: r = R_PPC64_ADDR16; | |
| 2234 | break; | |
| 2235 | case BFD_RELOC_LO16: r = R_PPC64_ADDR16_LO; | |
| 2236 | break; | |
| 2237 | case BFD_RELOC_HI16: r = R_PPC64_ADDR16_HI; | |
| 2238 | break; | |
| f9c6b907 AM |
2239 | case BFD_RELOC_PPC64_ADDR16_HIGH: r = R_PPC64_ADDR16_HIGH; |
| 2240 | break; | |
| 411e1bfb | 2241 | case BFD_RELOC_HI16_S: r = R_PPC64_ADDR16_HA; |
| 5bd4f169 | 2242 | break; |
| f9c6b907 AM |
2243 | case BFD_RELOC_PPC64_ADDR16_HIGHA: r = R_PPC64_ADDR16_HIGHA; |
| 2244 | break; | |
| 411e1bfb | 2245 | case BFD_RELOC_PPC_BA16: r = R_PPC64_ADDR14; |
| 5bd4f169 | 2246 | break; |
| 411e1bfb | 2247 | case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC64_ADDR14_BRTAKEN; |
| 5bd4f169 | 2248 | break; |
| 411e1bfb | 2249 | case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC64_ADDR14_BRNTAKEN; |
| 5bd4f169 | 2250 | break; |
| 411e1bfb | 2251 | case BFD_RELOC_PPC_B26: r = R_PPC64_REL24; |
| 5bd4f169 | 2252 | break; |
| 411e1bfb | 2253 | case BFD_RELOC_PPC_B16: r = R_PPC64_REL14; |
| 5bd4f169 | 2254 | break; |
| 411e1bfb | 2255 | case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC64_REL14_BRTAKEN; |
| 5bd4f169 | 2256 | break; |
| 411e1bfb | 2257 | case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC64_REL14_BRNTAKEN; |
| 5bd4f169 | 2258 | break; |
| 411e1bfb | 2259 | case BFD_RELOC_16_GOTOFF: r = R_PPC64_GOT16; |
| 5bd4f169 | 2260 | break; |
| 411e1bfb | 2261 | case BFD_RELOC_LO16_GOTOFF: r = R_PPC64_GOT16_LO; |
| 5bd4f169 | 2262 | break; |
| 411e1bfb | 2263 | case BFD_RELOC_HI16_GOTOFF: r = R_PPC64_GOT16_HI; |
| 5bd4f169 | 2264 | break; |
| 411e1bfb | 2265 | case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC64_GOT16_HA; |
| 5bd4f169 | 2266 | break; |
| 411e1bfb | 2267 | case BFD_RELOC_PPC_COPY: r = R_PPC64_COPY; |
| 5bd4f169 | 2268 | break; |
| 411e1bfb | 2269 | case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC64_GLOB_DAT; |
| 5bd4f169 | 2270 | break; |
| 411e1bfb | 2271 | case BFD_RELOC_32_PCREL: r = R_PPC64_REL32; |
| 5bd4f169 | 2272 | break; |
| 411e1bfb | 2273 | case BFD_RELOC_32_PLTOFF: r = R_PPC64_PLT32; |
| 5bd4f169 | 2274 | break; |
| 411e1bfb | 2275 | case BFD_RELOC_32_PLT_PCREL: r = R_PPC64_PLTREL32; |
| 5bd4f169 | 2276 | break; |
| 411e1bfb | 2277 | case BFD_RELOC_LO16_PLTOFF: r = R_PPC64_PLT16_LO; |
| 5bd4f169 | 2278 | break; |
| 411e1bfb | 2279 | case BFD_RELOC_HI16_PLTOFF: r = R_PPC64_PLT16_HI; |
| 5bd4f169 | 2280 | break; |
| 411e1bfb | 2281 | case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC64_PLT16_HA; |
| 5bd4f169 | 2282 | break; |
| 411e1bfb | 2283 | case BFD_RELOC_16_BASEREL: r = R_PPC64_SECTOFF; |
| 5bd4f169 | 2284 | break; |
| 411e1bfb | 2285 | case BFD_RELOC_LO16_BASEREL: r = R_PPC64_SECTOFF_LO; |
| 5bd4f169 | 2286 | break; |
| 411e1bfb | 2287 | case BFD_RELOC_HI16_BASEREL: r = R_PPC64_SECTOFF_HI; |
| 5bd4f169 | 2288 | break; |
| 411e1bfb | 2289 | case BFD_RELOC_HI16_S_BASEREL: r = R_PPC64_SECTOFF_HA; |
| 5bd4f169 | 2290 | break; |
| 411e1bfb | 2291 | case BFD_RELOC_CTOR: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2292 | break; |
| 411e1bfb | 2293 | case BFD_RELOC_64: r = R_PPC64_ADDR64; |
| 5bd4f169 | 2294 | break; |
| 411e1bfb | 2295 | case BFD_RELOC_PPC64_HIGHER: r = R_PPC64_ADDR16_HIGHER; |
| 5bd4f169 | 2296 | break; |
| 411e1bfb | 2297 | case BFD_RELOC_PPC64_HIGHER_S: r = R_PPC64_ADDR16_HIGHERA; |
| 5bd4f169 | 2298 | break; |
| 411e1bfb | 2299 | case BFD_RELOC_PPC64_HIGHEST: r = R_PPC64_ADDR16_HIGHEST; |
| 5bd4f169 | 2300 | break; |
| 411e1bfb | 2301 | case BFD_RELOC_PPC64_HIGHEST_S: r = R_PPC64_ADDR16_HIGHESTA; |
| 5bd4f169 | 2302 | break; |
| 411e1bfb | 2303 | case BFD_RELOC_64_PCREL: r = R_PPC64_REL64; |
| 5bd4f169 | 2304 | break; |
| 411e1bfb | 2305 | case BFD_RELOC_64_PLTOFF: r = R_PPC64_PLT64; |
| 5bd4f169 | 2306 | break; |
| 411e1bfb | 2307 | case BFD_RELOC_64_PLT_PCREL: r = R_PPC64_PLTREL64; |
| 5bd4f169 | 2308 | break; |
| 411e1bfb | 2309 | case BFD_RELOC_PPC_TOC16: r = R_PPC64_TOC16; |
| 5bd4f169 | 2310 | break; |
| 411e1bfb | 2311 | case BFD_RELOC_PPC64_TOC16_LO: r = R_PPC64_TOC16_LO; |
| 5bd4f169 | 2312 | break; |
| 411e1bfb | 2313 | case BFD_RELOC_PPC64_TOC16_HI: r = R_PPC64_TOC16_HI; |
| 5bd4f169 | 2314 | break; |
| 411e1bfb | 2315 | case BFD_RELOC_PPC64_TOC16_HA: r = R_PPC64_TOC16_HA; |
| 5bd4f169 | 2316 | break; |
| 411e1bfb | 2317 | case BFD_RELOC_PPC64_TOC: r = R_PPC64_TOC; |
| 5bd4f169 | 2318 | break; |
| 411e1bfb | 2319 | case BFD_RELOC_PPC64_PLTGOT16: r = R_PPC64_PLTGOT16; |
| 5bd4f169 | 2320 | break; |
| 411e1bfb | 2321 | case BFD_RELOC_PPC64_PLTGOT16_LO: r = R_PPC64_PLTGOT16_LO; |
| 5bd4f169 | 2322 | break; |
| 411e1bfb | 2323 | case BFD_RELOC_PPC64_PLTGOT16_HI: r = R_PPC64_PLTGOT16_HI; |
| 5bd4f169 | 2324 | break; |
| 411e1bfb | 2325 | case BFD_RELOC_PPC64_PLTGOT16_HA: r = R_PPC64_PLTGOT16_HA; |
| 5bd4f169 | 2326 | break; |
| 411e1bfb | 2327 | case BFD_RELOC_PPC64_ADDR16_DS: r = R_PPC64_ADDR16_DS; |
| 5bd4f169 | 2328 | break; |
| 411e1bfb | 2329 | case BFD_RELOC_PPC64_ADDR16_LO_DS: r = R_PPC64_ADDR16_LO_DS; |
| 5bd4f169 | 2330 | break; |
| 411e1bfb | 2331 | case BFD_RELOC_PPC64_GOT16_DS: r = R_PPC64_GOT16_DS; |
| 5bd4f169 | 2332 | break; |
| 411e1bfb | 2333 | case BFD_RELOC_PPC64_GOT16_LO_DS: r = R_PPC64_GOT16_LO_DS; |
| 5bd4f169 | 2334 | break; |
| 411e1bfb | 2335 | case BFD_RELOC_PPC64_PLT16_LO_DS: r = R_PPC64_PLT16_LO_DS; |
| 5bd4f169 | 2336 | break; |
| 411e1bfb | 2337 | case BFD_RELOC_PPC64_SECTOFF_DS: r = R_PPC64_SECTOFF_DS; |
| 5bd4f169 | 2338 | break; |
| 411e1bfb | 2339 | case BFD_RELOC_PPC64_SECTOFF_LO_DS: r = R_PPC64_SECTOFF_LO_DS; |
| 5bd4f169 | 2340 | break; |
| 411e1bfb | 2341 | case BFD_RELOC_PPC64_TOC16_DS: r = R_PPC64_TOC16_DS; |
| 5bd4f169 | 2342 | break; |
| 411e1bfb | 2343 | case BFD_RELOC_PPC64_TOC16_LO_DS: r = R_PPC64_TOC16_LO_DS; |
| 5bd4f169 | 2344 | break; |
| 411e1bfb | 2345 | case BFD_RELOC_PPC64_PLTGOT16_DS: r = R_PPC64_PLTGOT16_DS; |
| 5bd4f169 | 2346 | break; |
| 411e1bfb | 2347 | case BFD_RELOC_PPC64_PLTGOT16_LO_DS: r = R_PPC64_PLTGOT16_LO_DS; |
| 5bd4f169 | 2348 | break; |
| 411e1bfb | 2349 | case BFD_RELOC_PPC_TLS: r = R_PPC64_TLS; |
| 5bd4f169 | 2350 | break; |
| 727fc41e AM |
2351 | case BFD_RELOC_PPC_TLSGD: r = R_PPC64_TLSGD; |
| 2352 | break; | |
| 2353 | case BFD_RELOC_PPC_TLSLD: r = R_PPC64_TLSLD; | |
| 2354 | break; | |
| 411e1bfb | 2355 | case BFD_RELOC_PPC_DTPMOD: r = R_PPC64_DTPMOD64; |
| 5bd4f169 | 2356 | break; |
| 411e1bfb | 2357 | case BFD_RELOC_PPC_TPREL16: r = R_PPC64_TPREL16; |
| 5bd4f169 | 2358 | break; |
| 411e1bfb | 2359 | case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC64_TPREL16_LO; |
| 5bd4f169 | 2360 | break; |
| 411e1bfb | 2361 | case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC64_TPREL16_HI; |
| 5bd4f169 | 2362 | break; |
| f9c6b907 AM |
2363 | case BFD_RELOC_PPC64_TPREL16_HIGH: r = R_PPC64_TPREL16_HIGH; |
| 2364 | break; | |
| 411e1bfb | 2365 | case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC64_TPREL16_HA; |
| 5bd4f169 | 2366 | break; |
| f9c6b907 AM |
2367 | case BFD_RELOC_PPC64_TPREL16_HIGHA: r = R_PPC64_TPREL16_HIGHA; |
| 2368 | break; | |
| 411e1bfb | 2369 | case BFD_RELOC_PPC_TPREL: r = R_PPC64_TPREL64; |
| 5bd4f169 | 2370 | break; |
| 411e1bfb AM |
2371 | case BFD_RELOC_PPC_DTPREL16: r = R_PPC64_DTPREL16; |
| 2372 | break; | |
| 2373 | case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC64_DTPREL16_LO; | |
| 2374 | break; | |
| 2375 | case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC64_DTPREL16_HI; | |
| 2376 | break; | |
| f9c6b907 AM |
2377 | case BFD_RELOC_PPC64_DTPREL16_HIGH: r = R_PPC64_DTPREL16_HIGH; |
| 2378 | break; | |
| 411e1bfb AM |
2379 | case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC64_DTPREL16_HA; |
| 2380 | break; | |
| f9c6b907 AM |
2381 | case BFD_RELOC_PPC64_DTPREL16_HIGHA: r = R_PPC64_DTPREL16_HIGHA; |
| 2382 | break; | |
| 411e1bfb AM |
2383 | case BFD_RELOC_PPC_DTPREL: r = R_PPC64_DTPREL64; |
| 2384 | break; | |
| 2385 | case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC64_GOT_TLSGD16; | |
| 2386 | break; | |
| 2387 | case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC64_GOT_TLSGD16_LO; | |
| 2388 | break; | |
| 2389 | case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC64_GOT_TLSGD16_HI; | |
| 2390 | break; | |
| 2391 | case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC64_GOT_TLSGD16_HA; | |
| 2392 | break; | |
| 2393 | case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC64_GOT_TLSLD16; | |
| 2394 | break; | |
| 2395 | case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC64_GOT_TLSLD16_LO; | |
| 2396 | break; | |
| 2397 | case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC64_GOT_TLSLD16_HI; | |
| 2398 | break; | |
| 2399 | case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC64_GOT_TLSLD16_HA; | |
| 2400 | break; | |
| 2401 | case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC64_GOT_TPREL16_DS; | |
| 2402 | break; | |
| 2403 | case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC64_GOT_TPREL16_LO_DS; | |
| 2404 | break; | |
| 2405 | case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC64_GOT_TPREL16_HI; | |
| 2406 | break; | |
| 2407 | case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC64_GOT_TPREL16_HA; | |
| 2408 | break; | |
| 2409 | case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC64_GOT_DTPREL16_DS; | |
| 2410 | break; | |
| 2411 | case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC64_GOT_DTPREL16_LO_DS; | |
| 2412 | break; | |
| 2413 | case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC64_GOT_DTPREL16_HI; | |
| 2414 | break; | |
| 2415 | case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC64_GOT_DTPREL16_HA; | |
| 2416 | break; | |
| 2417 | case BFD_RELOC_PPC64_TPREL16_DS: r = R_PPC64_TPREL16_DS; | |
| 2418 | break; | |
| 2419 | case BFD_RELOC_PPC64_TPREL16_LO_DS: r = R_PPC64_TPREL16_LO_DS; | |
| 2420 | break; | |
| 2421 | case BFD_RELOC_PPC64_TPREL16_HIGHER: r = R_PPC64_TPREL16_HIGHER; | |
| 2422 | break; | |
| 2423 | case BFD_RELOC_PPC64_TPREL16_HIGHERA: r = R_PPC64_TPREL16_HIGHERA; | |
| 2424 | break; | |
| 2425 | case BFD_RELOC_PPC64_TPREL16_HIGHEST: r = R_PPC64_TPREL16_HIGHEST; | |
| 2426 | break; | |
| 2427 | case BFD_RELOC_PPC64_TPREL16_HIGHESTA: r = R_PPC64_TPREL16_HIGHESTA; | |
| 2428 | break; | |
| 2429 | case BFD_RELOC_PPC64_DTPREL16_DS: r = R_PPC64_DTPREL16_DS; | |
| 2430 | break; | |
| 2431 | case BFD_RELOC_PPC64_DTPREL16_LO_DS: r = R_PPC64_DTPREL16_LO_DS; | |
| 2432 | break; | |
| 2433 | case BFD_RELOC_PPC64_DTPREL16_HIGHER: r = R_PPC64_DTPREL16_HIGHER; | |
| 2434 | break; | |
| 2435 | case BFD_RELOC_PPC64_DTPREL16_HIGHERA: r = R_PPC64_DTPREL16_HIGHERA; | |
| 2436 | break; | |
| 2437 | case BFD_RELOC_PPC64_DTPREL16_HIGHEST: r = R_PPC64_DTPREL16_HIGHEST; | |
| 2438 | break; | |
| 2439 | case BFD_RELOC_PPC64_DTPREL16_HIGHESTA: r = R_PPC64_DTPREL16_HIGHESTA; | |
| 2440 | break; | |
| 25f23106 AM |
2441 | case BFD_RELOC_16_PCREL: r = R_PPC64_REL16; |
| 2442 | break; | |
| 2443 | case BFD_RELOC_LO16_PCREL: r = R_PPC64_REL16_LO; | |
| 2444 | break; | |
| 2445 | case BFD_RELOC_HI16_PCREL: r = R_PPC64_REL16_HI; | |
| 2446 | break; | |
| 2447 | case BFD_RELOC_HI16_S_PCREL: r = R_PPC64_REL16_HA; | |
| 2448 | break; | |
| a680de9a PB |
2449 | case BFD_RELOC_PPC_REL16DX_HA: r = R_PPC64_REL16DX_HA; |
| 2450 | break; | |
| 006589cf AM |
2451 | case BFD_RELOC_PPC64_ENTRY: r = R_PPC64_ENTRY; |
| 2452 | break; | |
| 45965137 AM |
2453 | case BFD_RELOC_PPC64_ADDR64_LOCAL: r = R_PPC64_ADDR64_LOCAL; |
| 2454 | break; | |
| 411e1bfb AM |
2455 | case BFD_RELOC_VTABLE_INHERIT: r = R_PPC64_GNU_VTINHERIT; |
| 2456 | break; | |
| 2457 | case BFD_RELOC_VTABLE_ENTRY: r = R_PPC64_GNU_VTENTRY; | |
| 5bd4f169 AM |
2458 | break; |
| 2459 | } | |
| 2460 | ||
| 4ce794b7 | 2461 | return ppc64_elf_howto_table[r]; |
| 5bd4f169 AM |
2462 | }; |
| 2463 | ||
| 157090f7 AM |
2464 | static reloc_howto_type * |
| 2465 | ppc64_elf_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
| 2466 | const char *r_name) | |
| 2467 | { | |
| 2468 | unsigned int i; | |
| 2469 | ||
| a4b6fadd | 2470 | for (i = 0; i < ARRAY_SIZE (ppc64_elf_howto_raw); i++) |
| 157090f7 AM |
2471 | if (ppc64_elf_howto_raw[i].name != NULL |
| 2472 | && strcasecmp (ppc64_elf_howto_raw[i].name, r_name) == 0) | |
| 2473 | return &ppc64_elf_howto_raw[i]; | |
| 2474 | ||
| 2475 | return NULL; | |
| 2476 | } | |
| 2477 | ||
| 5bd4f169 AM |
2478 | /* Set the howto pointer for a PowerPC ELF reloc. */ |
| 2479 | ||
| 2480 | static void | |
| 4ce794b7 AM |
2481 | ppc64_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, |
| 2482 | Elf_Internal_Rela *dst) | |
| 5bd4f169 | 2483 | { |
| 65f38f15 AM |
2484 | unsigned int type; |
| 2485 | ||
| ef60b7ff | 2486 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 2487 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
2488 | ppc_howto_init (); |
| 2489 | ||
| 65f38f15 | 2490 | type = ELF64_R_TYPE (dst->r_info); |
| a4b6fadd | 2491 | if (type >= ARRAY_SIZE (ppc64_elf_howto_table)) |
| d0fb9a8d JJ |
2492 | { |
| 2493 | (*_bfd_error_handler) (_("%B: invalid relocation type %d"), | |
| 3ec2b351 NC |
2494 | abfd, (int) type); |
| 2495 | type = R_PPC64_NONE; | |
| d0fb9a8d | 2496 | } |
| 65f38f15 | 2497 | cache_ptr->howto = ppc64_elf_howto_table[type]; |
| 5bd4f169 AM |
2498 | } |
| 2499 | ||
| 04c9666a | 2500 | /* Handle the R_PPC64_ADDR16_HA and similar relocs. */ |
| 5bd4f169 AM |
2501 | |
| 2502 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2503 | ppc64_elf_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2504 | void *data, asection *input_section, | |
| 2505 | bfd *output_bfd, char **error_message) | |
| 5bd4f169 | 2506 | { |
| a680de9a PB |
2507 | enum elf_ppc64_reloc_type r_type; |
| 2508 | long insn; | |
| 2509 | bfd_size_type octets; | |
| 2510 | bfd_vma value; | |
| 2511 | ||
| 805fc799 AM |
2512 | /* If this is a relocatable link (output_bfd test tells us), just |
| 2513 | call the generic function. Any adjustment will be done at final | |
| 2514 | link time. */ | |
| 2515 | if (output_bfd != NULL) | |
| cedb70c5 | 2516 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2517 | input_section, output_bfd, error_message); |
| 2518 | ||
| 2519 | /* Adjust the addend for sign extension of the low 16 bits. | |
| 2520 | We won't actually be using the low 16 bits, so trashing them | |
| 2521 | doesn't matter. */ | |
| 2522 | reloc_entry->addend += 0x8000; | |
| a680de9a PB |
2523 | r_type = reloc_entry->howto->type; |
| 2524 | if (r_type != R_PPC64_REL16DX_HA) | |
| 2525 | return bfd_reloc_continue; | |
| 2526 | ||
| 2527 | value = 0; | |
| 2528 | if (!bfd_is_com_section (symbol->section)) | |
| 2529 | value = symbol->value; | |
| 2530 | value += (reloc_entry->addend | |
| 2531 | + symbol->section->output_offset | |
| 2532 | + symbol->section->output_section->vma); | |
| 2533 | value -= (reloc_entry->address | |
| 2534 | + input_section->output_offset | |
| 2535 | + input_section->output_section->vma); | |
| 2536 | value = (bfd_signed_vma) value >> 16; | |
| 2537 | ||
| 2538 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2539 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2540 | insn &= ~0x1fffc1; | |
| 2541 | insn |= (value & 0xffc1) | ((value & 0x3e) << 15); | |
| 2542 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); | |
| 2543 | if (value + 0x8000 > 0xffff) | |
| 2544 | return bfd_reloc_overflow; | |
| 2545 | return bfd_reloc_ok; | |
| 805fc799 | 2546 | } |
| 5bd4f169 | 2547 | |
| 2441e016 AM |
2548 | static bfd_reloc_status_type |
| 2549 | ppc64_elf_branch_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, | |
| 2550 | void *data, asection *input_section, | |
| 2551 | bfd *output_bfd, char **error_message) | |
| 2552 | { | |
| 2553 | if (output_bfd != NULL) | |
| 2554 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, | |
| 2555 | input_section, output_bfd, error_message); | |
| 2556 | ||
| 699733f6 AM |
2557 | if (strcmp (symbol->section->name, ".opd") == 0 |
| 2558 | && (symbol->section->owner->flags & DYNAMIC) == 0) | |
| 2441e016 AM |
2559 | { |
| 2560 | bfd_vma dest = opd_entry_value (symbol->section, | |
| 2561 | symbol->value + reloc_entry->addend, | |
| aef36ac1 | 2562 | NULL, NULL, FALSE); |
| 2441e016 AM |
2563 | if (dest != (bfd_vma) -1) |
| 2564 | reloc_entry->addend = dest - (symbol->value | |
| 2565 | + symbol->section->output_section->vma | |
| 2566 | + symbol->section->output_offset); | |
| 2567 | } | |
| 810d4e75 AM |
2568 | else |
| 2569 | { | |
| 2570 | elf_symbol_type *elfsym = (elf_symbol_type *) symbol; | |
| 2571 | ||
| 2572 | if (symbol->section->owner != abfd | |
| 2573 | && abiversion (symbol->section->owner) >= 2) | |
| 2574 | { | |
| 2575 | unsigned int i; | |
| 2576 | ||
| 2577 | for (i = 0; i < symbol->section->owner->symcount; ++i) | |
| 2578 | { | |
| 2579 | asymbol *symdef = symbol->section->owner->outsymbols[i]; | |
| 2580 | ||
| 2581 | if (strcmp (symdef->name, symbol->name) == 0) | |
| 2582 | { | |
| 2583 | elfsym = (elf_symbol_type *) symdef; | |
| 2584 | break; | |
| 2585 | } | |
| 2586 | } | |
| 2587 | } | |
| 2588 | reloc_entry->addend | |
| 2589 | += PPC64_LOCAL_ENTRY_OFFSET (elfsym->internal_elf_sym.st_other); | |
| 2590 | } | |
| 2441e016 AM |
2591 | return bfd_reloc_continue; |
| 2592 | } | |
| 2593 | ||
| 805fc799 | 2594 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2595 | ppc64_elf_brtaken_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2596 | void *data, asection *input_section, | |
| 2597 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2598 | { |
| 2599 | long insn; | |
| 04c9666a | 2600 | enum elf_ppc64_reloc_type r_type; |
| 805fc799 | 2601 | bfd_size_type octets; |
| 794e51c0 AM |
2602 | /* Assume 'at' branch hints. */ |
| 2603 | bfd_boolean is_isa_v2 = TRUE; | |
| 805fc799 AM |
2604 | |
| 2605 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2606 | call the generic function. Any adjustment will be done at final | |
| 2607 | link time. */ | |
| 5bd4f169 | 2608 | if (output_bfd != NULL) |
| cedb70c5 | 2609 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2610 | input_section, output_bfd, error_message); |
| 2611 | ||
| 2612 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2613 | insn = bfd_get_32 (abfd, (bfd_byte *) data + octets); | |
| 2614 | insn &= ~(0x01 << 21); | |
| 4ce794b7 | 2615 | r_type = reloc_entry->howto->type; |
| 805fc799 AM |
2616 | if (r_type == R_PPC64_ADDR14_BRTAKEN |
| 2617 | || r_type == R_PPC64_REL14_BRTAKEN) | |
| cedb70c5 | 2618 | insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 805fc799 | 2619 | |
| 794e51c0 | 2620 | if (is_isa_v2) |
| 5bd4f169 | 2621 | { |
| 805fc799 AM |
2622 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 2623 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 2624 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 2625 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 2626 | insn |= 0x02 << 21; | |
| 2627 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 2628 | insn |= 0x08 << 21; | |
| 2629 | else | |
| 2441e016 | 2630 | goto out; |
| 5bd4f169 | 2631 | } |
| 805fc799 AM |
2632 | else |
| 2633 | { | |
| 2634 | bfd_vma target = 0; | |
| 2635 | bfd_vma from; | |
| 5bd4f169 | 2636 | |
| 805fc799 AM |
2637 | if (!bfd_is_com_section (symbol->section)) |
| 2638 | target = symbol->value; | |
| 2639 | target += symbol->section->output_section->vma; | |
| 2640 | target += symbol->section->output_offset; | |
| 2641 | target += reloc_entry->addend; | |
| 5bd4f169 | 2642 | |
| 805fc799 AM |
2643 | from = (reloc_entry->address |
| 2644 | + input_section->output_offset | |
| 2645 | + input_section->output_section->vma); | |
| 5bd4f169 | 2646 | |
| 805fc799 AM |
2647 | /* Invert 'y' bit if not the default. */ |
| 2648 | if ((bfd_signed_vma) (target - from) < 0) | |
| 2649 | insn ^= 0x01 << 21; | |
| 2650 | } | |
| 4ce794b7 | 2651 | bfd_put_32 (abfd, insn, (bfd_byte *) data + octets); |
| 2441e016 AM |
2652 | out: |
| 2653 | return ppc64_elf_branch_reloc (abfd, reloc_entry, symbol, data, | |
| 2654 | input_section, output_bfd, error_message); | |
| 805fc799 | 2655 | } |
| 5bd4f169 | 2656 | |
| 805fc799 | 2657 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2658 | ppc64_elf_sectoff_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2659 | void *data, asection *input_section, | |
| 2660 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2661 | { |
| 2662 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2663 | call the generic function. Any adjustment will be done at final | |
| 2664 | link time. */ | |
| 2665 | if (output_bfd != NULL) | |
| cedb70c5 | 2666 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 | 2667 | input_section, output_bfd, error_message); |
| 5bd4f169 | 2668 | |
| 805fc799 AM |
2669 | /* Subtract the symbol section base address. */ |
| 2670 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 5bd4f169 AM |
2671 | return bfd_reloc_continue; |
| 2672 | } | |
| 2673 | ||
| 805fc799 | 2674 | static bfd_reloc_status_type |
| 4ce794b7 AM |
2675 | ppc64_elf_sectoff_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2676 | void *data, asection *input_section, | |
| 2677 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2678 | { |
| 2679 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2680 | call the generic function. Any adjustment will be done at final | |
| 2681 | link time. */ | |
| 2682 | if (output_bfd != NULL) | |
| cedb70c5 | 2683 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2684 | input_section, output_bfd, error_message); |
| 2685 | ||
| 2686 | /* Subtract the symbol section base address. */ | |
| 2687 | reloc_entry->addend -= symbol->section->output_section->vma; | |
| 2688 | ||
| 2689 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2690 | reloc_entry->addend += 0x8000; | |
| 2691 | return bfd_reloc_continue; | |
| 2692 | } | |
| 2693 | ||
| 2694 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2695 | ppc64_elf_toc_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2696 | void *data, asection *input_section, | |
| 2697 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2698 | { |
| 2699 | bfd_vma TOCstart; | |
| 2700 | ||
| 2701 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2702 | call the generic function. Any adjustment will be done at final | |
| 2703 | link time. */ | |
| 2704 | if (output_bfd != NULL) | |
| cedb70c5 | 2705 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2706 | input_section, output_bfd, error_message); |
| 2707 | ||
| 2708 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2709 | if (TOCstart == 0) | |
| 1c865ab2 | 2710 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2711 | |
| 2712 | /* Subtract the TOC base address. */ | |
| 2713 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2714 | return bfd_reloc_continue; | |
| 2715 | } | |
| 2716 | ||
| 2717 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2718 | ppc64_elf_toc_ha_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2719 | void *data, asection *input_section, | |
| 2720 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2721 | { |
| 2722 | bfd_vma TOCstart; | |
| 2723 | ||
| 2724 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2725 | call the generic function. Any adjustment will be done at final | |
| 2726 | link time. */ | |
| 2727 | if (output_bfd != NULL) | |
| cedb70c5 | 2728 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2729 | input_section, output_bfd, error_message); |
| 2730 | ||
| 2731 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2732 | if (TOCstart == 0) | |
| 1c865ab2 | 2733 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2734 | |
| 2735 | /* Subtract the TOC base address. */ | |
| 2736 | reloc_entry->addend -= TOCstart + TOC_BASE_OFF; | |
| 2737 | ||
| 2738 | /* Adjust the addend for sign extension of the low 16 bits. */ | |
| 2739 | reloc_entry->addend += 0x8000; | |
| 2740 | return bfd_reloc_continue; | |
| 2741 | } | |
| 2742 | ||
| 2743 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2744 | ppc64_elf_toc64_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol, |
| 2745 | void *data, asection *input_section, | |
| 2746 | bfd *output_bfd, char **error_message) | |
| 805fc799 AM |
2747 | { |
| 2748 | bfd_vma TOCstart; | |
| 2749 | bfd_size_type octets; | |
| 2750 | ||
| 2751 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2752 | call the generic function. Any adjustment will be done at final | |
| 2753 | link time. */ | |
| 2754 | if (output_bfd != NULL) | |
| cedb70c5 | 2755 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2756 | input_section, output_bfd, error_message); |
| 2757 | ||
| 2758 | TOCstart = _bfd_get_gp_value (input_section->output_section->owner); | |
| 2759 | if (TOCstart == 0) | |
| 1c865ab2 | 2760 | TOCstart = ppc64_elf_set_toc (NULL, input_section->output_section->owner); |
| 805fc799 AM |
2761 | |
| 2762 | octets = reloc_entry->address * bfd_octets_per_byte (abfd); | |
| 2763 | bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets); | |
| 2764 | return bfd_reloc_ok; | |
| 2765 | } | |
| 2766 | ||
| 2767 | static bfd_reloc_status_type | |
| 4ce794b7 AM |
2768 | ppc64_elf_unhandled_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 | /* If this is a relocatable link (output_bfd test tells us), just | |
| 2773 | call the generic function. Any adjustment will be done at final | |
| 2774 | link time. */ | |
| 2775 | if (output_bfd != NULL) | |
| cedb70c5 | 2776 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 805fc799 AM |
2777 | input_section, output_bfd, error_message); |
| 2778 | ||
| 2779 | if (error_message != NULL) | |
| 2780 | { | |
| 2781 | static char buf[60]; | |
| 2782 | sprintf (buf, "generic linker can't handle %s", | |
| 2783 | reloc_entry->howto->name); | |
| 2784 | *error_message = buf; | |
| 2785 | } | |
| 2786 | return bfd_reloc_dangerous; | |
| 2787 | } | |
| 2788 | ||
| 927be08e AM |
2789 | /* Track GOT entries needed for a given symbol. We might need more |
| 2790 | than one got entry per symbol. */ | |
| 2791 | struct got_entry | |
| 2792 | { | |
| 2793 | struct got_entry *next; | |
| 2794 | ||
| 2795 | /* The symbol addend that we'll be placing in the GOT. */ | |
| 2796 | bfd_vma addend; | |
| 2797 | ||
| 2798 | /* Unlike other ELF targets, we use separate GOT entries for the same | |
| 2799 | symbol referenced from different input files. This is to support | |
| 2800 | automatic multiple TOC/GOT sections, where the TOC base can vary | |
| 2801 | from one input file to another. After partitioning into TOC groups | |
| 2802 | we merge entries within the group. | |
| 2803 | ||
| 2804 | Point to the BFD owning this GOT entry. */ | |
| 2805 | bfd *owner; | |
| 2806 | ||
| 2807 | /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD, | |
| 2808 | TLS_TPREL or TLS_DTPREL for tls entries. */ | |
| f961d9dd | 2809 | unsigned char tls_type; |
| 927be08e AM |
2810 | |
| 2811 | /* Non-zero if got.ent points to real entry. */ | |
| f961d9dd | 2812 | unsigned char is_indirect; |
| 927be08e AM |
2813 | |
| 2814 | /* Reference count until size_dynamic_sections, GOT offset thereafter. */ | |
| 2815 | union | |
| 2816 | { | |
| 2817 | bfd_signed_vma refcount; | |
| 2818 | bfd_vma offset; | |
| 2819 | struct got_entry *ent; | |
| 2820 | } got; | |
| 2821 | }; | |
| 2822 | ||
| 2823 | /* The same for PLT. */ | |
| 2824 | struct plt_entry | |
| 2825 | { | |
| 2826 | struct plt_entry *next; | |
| 2827 | ||
| 2828 | bfd_vma addend; | |
| 2829 | ||
| 2830 | union | |
| 2831 | { | |
| 2832 | bfd_signed_vma refcount; | |
| 2833 | bfd_vma offset; | |
| 2834 | } plt; | |
| 2835 | }; | |
| 2836 | ||
| e717da7e AM |
2837 | struct ppc64_elf_obj_tdata |
| 2838 | { | |
| 2839 | struct elf_obj_tdata elf; | |
| 2840 | ||
| 2841 | /* Shortcuts to dynamic linker sections. */ | |
| 2842 | asection *got; | |
| 2843 | asection *relgot; | |
| 2844 | ||
| b3fac117 AM |
2845 | /* Used during garbage collection. We attach global symbols defined |
| 2846 | on removed .opd entries to this section so that the sym is removed. */ | |
| 2847 | asection *deleted_section; | |
| 81688140 | 2848 | |
| 927be08e | 2849 | /* TLS local dynamic got entry handling. Support for multiple GOT |
| e717da7e | 2850 | sections means we potentially need one of these for each input bfd. */ |
| 927be08e | 2851 | struct got_entry tlsld_got; |
| 8860955f | 2852 | |
| 729eabd5 AM |
2853 | union { |
| 2854 | /* A copy of relocs before they are modified for --emit-relocs. */ | |
| 2855 | Elf_Internal_Rela *relocs; | |
| 2856 | ||
| 2857 | /* Section contents. */ | |
| 2858 | bfd_byte *contents; | |
| 2859 | } opd; | |
| d77c8a4b AM |
2860 | |
| 2861 | /* Nonzero if this bfd has small toc/got relocs, ie. that expect | |
| 2862 | the reloc to be in the range -32768 to 32767. */ | |
| 98528052 AM |
2863 | unsigned int has_small_toc_reloc : 1; |
| 2864 | ||
| 560c8763 AM |
2865 | /* Set if toc/got ha relocs detected not using r2, or lo reloc |
| 2866 | instruction not one we handle. */ | |
| 2867 | unsigned int unexpected_toc_insn : 1; | |
| e717da7e AM |
2868 | }; |
| 2869 | ||
| 2870 | #define ppc64_elf_tdata(bfd) \ | |
| 2871 | ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any) | |
| 2872 | ||
| 2873 | #define ppc64_tlsld_got(bfd) \ | |
| 2874 | (&ppc64_elf_tdata (bfd)->tlsld_got) | |
| 2875 | ||
| 0c8d6e5c AM |
2876 | #define is_ppc64_elf(bfd) \ |
| 2877 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
| 4dfe6ac6 | 2878 | && elf_object_id (bfd) == PPC64_ELF_DATA) |
| 0c8d6e5c | 2879 | |
| e717da7e AM |
2880 | /* Override the generic function because we store some extras. */ |
| 2881 | ||
| 2882 | static bfd_boolean | |
| 2883 | ppc64_elf_mkobject (bfd *abfd) | |
| 2884 | { | |
| 0ffa91dd | 2885 | return bfd_elf_allocate_object (abfd, sizeof (struct ppc64_elf_obj_tdata), |
| 4dfe6ac6 | 2886 | PPC64_ELF_DATA); |
| e717da7e AM |
2887 | } |
| 2888 | ||
| feee612b AM |
2889 | /* Fix bad default arch selected for a 64 bit input bfd when the |
| 2890 | default is 32 bit. */ | |
| 2891 | ||
| b34976b6 | 2892 | static bfd_boolean |
| 4ce794b7 | 2893 | ppc64_elf_object_p (bfd *abfd) |
| feee612b AM |
2894 | { |
| 2895 | if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32) | |
| 2896 | { | |
| 2897 | Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd); | |
| 2898 | ||
| 2899 | if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64) | |
| 2900 | { | |
| 2901 | /* Relies on arch after 32 bit default being 64 bit default. */ | |
| 2902 | abfd->arch_info = abfd->arch_info->next; | |
| 2903 | BFD_ASSERT (abfd->arch_info->bits_per_word == 64); | |
| 2904 | } | |
| 2905 | } | |
| b34976b6 | 2906 | return TRUE; |
| feee612b AM |
2907 | } |
| 2908 | ||
| d37c89e5 AM |
2909 | /* Support for core dump NOTE sections. */ |
| 2910 | ||
| 2911 | static bfd_boolean | |
| 2912 | ppc64_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
| 2913 | { | |
| eea6121a | 2914 | size_t offset, size; |
| d37c89e5 AM |
2915 | |
| 2916 | if (note->descsz != 504) | |
| 2917 | return FALSE; | |
| 2918 | ||
| 2919 | /* pr_cursig */ | |
| 228e534f | 2920 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); |
| d37c89e5 AM |
2921 | |
| 2922 | /* pr_pid */ | |
| 228e534f | 2923 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 32); |
| d37c89e5 AM |
2924 | |
| 2925 | /* pr_reg */ | |
| 2926 | offset = 112; | |
| eea6121a | 2927 | size = 384; |
| d37c89e5 AM |
2928 | |
| 2929 | /* Make a ".reg/999" section. */ | |
| 2930 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", | |
| eea6121a | 2931 | size, note->descpos + offset); |
| d37c89e5 AM |
2932 | } |
| 2933 | ||
| 2934 | static bfd_boolean | |
| 2935 | ppc64_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
| 2936 | { | |
| 2937 | if (note->descsz != 136) | |
| 2938 | return FALSE; | |
| 2939 | ||
| 228e534f | 2940 | elf_tdata (abfd)->core->pid |
| bc989cdc | 2941 | = bfd_get_32 (abfd, note->descdata + 24); |
| 228e534f | 2942 | elf_tdata (abfd)->core->program |
| d37c89e5 | 2943 | = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16); |
| 228e534f | 2944 | elf_tdata (abfd)->core->command |
| d37c89e5 AM |
2945 | = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80); |
| 2946 | ||
| 2947 | return TRUE; | |
| 2948 | } | |
| 2949 | ||
| 183e98be AM |
2950 | static char * |
| 2951 | ppc64_elf_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type, | |
| 2952 | ...) | |
| 2953 | { | |
| 2954 | switch (note_type) | |
| 2955 | { | |
| 2956 | default: | |
| 2957 | return NULL; | |
| 2958 | ||
| 2959 | case NT_PRPSINFO: | |
| 2960 | { | |
| 2961 | char data[136]; | |
| 2962 | va_list ap; | |
| 2963 | ||
| 2964 | va_start (ap, note_type); | |
| 75cd47ed | 2965 | memset (data, 0, sizeof (data)); |
| 183e98be AM |
2966 | strncpy (data + 40, va_arg (ap, const char *), 16); |
| 2967 | strncpy (data + 56, va_arg (ap, const char *), 80); | |
| 2968 | va_end (ap); | |
| 2969 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2970 | "CORE", note_type, data, sizeof (data)); | |
| 2971 | } | |
| 2972 | ||
| 2973 | case NT_PRSTATUS: | |
| 2974 | { | |
| 2975 | char data[504]; | |
| 2976 | va_list ap; | |
| 2977 | long pid; | |
| 2978 | int cursig; | |
| 2979 | const void *greg; | |
| 2980 | ||
| 2981 | va_start (ap, note_type); | |
| 2982 | memset (data, 0, 112); | |
| 2983 | pid = va_arg (ap, long); | |
| 2984 | bfd_put_32 (abfd, pid, data + 32); | |
| 2985 | cursig = va_arg (ap, int); | |
| 2986 | bfd_put_16 (abfd, cursig, data + 12); | |
| 2987 | greg = va_arg (ap, const void *); | |
| 2988 | memcpy (data + 112, greg, 384); | |
| 2989 | memset (data + 496, 0, 8); | |
| 2990 | va_end (ap); | |
| 2991 | return elfcore_write_note (abfd, buf, bufsiz, | |
| 2992 | "CORE", note_type, data, sizeof (data)); | |
| 2993 | } | |
| 2994 | } | |
| 2995 | } | |
| 2996 | ||
| 5d35169e AM |
2997 | /* Add extra PPC sections. */ |
| 2998 | ||
| b35d266b | 2999 | static const struct bfd_elf_special_section ppc64_elf_special_sections[]= |
| 7f4d3958 | 3000 | { |
| 0112cd26 NC |
3001 | { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS, 0 }, |
| 3002 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3003 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3004 | { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3005 | { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3006 | { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, | |
| 3007 | { NULL, 0, 0, 0, 0 } | |
| 5d35169e AM |
3008 | }; |
| 3009 | ||
| 7c8fe5c4 AM |
3010 | enum _ppc64_sec_type { |
| 3011 | sec_normal = 0, | |
| 3012 | sec_opd = 1, | |
| 3013 | sec_toc = 2 | |
| 3014 | }; | |
| 3015 | ||
| f0abc2a1 AM |
3016 | struct _ppc64_elf_section_data |
| 3017 | { | |
| 3018 | struct bfd_elf_section_data elf; | |
| 411e1bfb | 3019 | |
| f0abc2a1 AM |
3020 | union |
| 3021 | { | |
| 51aecdc5 AM |
3022 | /* An array with one entry for each opd function descriptor, |
| 3023 | and some spares since opd entries may be either 16 or 24 bytes. */ | |
| 3024 | #define OPD_NDX(OFF) ((OFF) >> 4) | |
| 74f0fb50 AM |
3025 | struct _opd_sec_data |
| 3026 | { | |
| 3027 | /* Points to the function code section for local opd entries. */ | |
| 3028 | asection **func_sec; | |
| 3029 | ||
| 3030 | /* After editing .opd, adjust references to opd local syms. */ | |
| 3031 | long *adjust; | |
| 3032 | } opd; | |
| 7c8fe5c4 | 3033 | |
| 3a71aa26 AM |
3034 | /* An array for toc sections, indexed by offset/8. */ |
| 3035 | struct _toc_sec_data | |
| 3036 | { | |
| 3037 | /* Specifies the relocation symbol index used at a given toc offset. */ | |
| 3038 | unsigned *symndx; | |
| 3039 | ||
| 3040 | /* And the relocation addend. */ | |
| 3041 | bfd_vma *add; | |
| 3042 | } toc; | |
| 7c8fe5c4 AM |
3043 | } u; |
| 3044 | ||
| 3045 | enum _ppc64_sec_type sec_type:2; | |
| 411e1bfb | 3046 | |
| 7c8fe5c4 AM |
3047 | /* Flag set when small branches are detected. Used to |
| 3048 | select suitable defaults for the stub group size. */ | |
| 3049 | unsigned int has_14bit_branch:1; | |
| f0abc2a1 AM |
3050 | }; |
| 3051 | ||
| 3052 | #define ppc64_elf_section_data(sec) \ | |
| 411e1bfb | 3053 | ((struct _ppc64_elf_section_data *) elf_section_data (sec)) |
| f0abc2a1 AM |
3054 | |
| 3055 | static bfd_boolean | |
| 4ce794b7 | 3056 | ppc64_elf_new_section_hook (bfd *abfd, asection *sec) |
| f0abc2a1 | 3057 | { |
| f592407e AM |
3058 | if (!sec->used_by_bfd) |
| 3059 | { | |
| 3060 | struct _ppc64_elf_section_data *sdata; | |
| 3061 | bfd_size_type amt = sizeof (*sdata); | |
| f0abc2a1 | 3062 | |
| f592407e AM |
3063 | sdata = bfd_zalloc (abfd, amt); |
| 3064 | if (sdata == NULL) | |
| 3065 | return FALSE; | |
| 3066 | sec->used_by_bfd = sdata; | |
| 3067 | } | |
| f0abc2a1 AM |
3068 | |
| 3069 | return _bfd_elf_new_section_hook (abfd, sec); | |
| 3070 | } | |
| 4025353c | 3071 | |
| 74f0fb50 | 3072 | static struct _opd_sec_data * |
| 4025353c AM |
3073 | get_opd_info (asection * sec) |
| 3074 | { | |
| 3075 | if (sec != NULL | |
| 3076 | && ppc64_elf_section_data (sec) != NULL | |
| 7c8fe5c4 | 3077 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) |
| 74f0fb50 | 3078 | return &ppc64_elf_section_data (sec)->u.opd; |
| 4025353c AM |
3079 | return NULL; |
| 3080 | } | |
| 90e3cdf2 JJ |
3081 | \f |
| 3082 | /* Parameters for the qsort hook. */ | |
| 90e3cdf2 JJ |
3083 | static bfd_boolean synthetic_relocatable; |
| 3084 | ||
| 699733f6 | 3085 | /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */ |
| 90e3cdf2 JJ |
3086 | |
| 3087 | static int | |
| 3088 | compare_symbols (const void *ap, const void *bp) | |
| 3089 | { | |
| 3090 | const asymbol *a = * (const asymbol **) ap; | |
| 3091 | const asymbol *b = * (const asymbol **) bp; | |
| 3092 | ||
| 699733f6 AM |
3093 | /* Section symbols first. */ |
| 3094 | if ((a->flags & BSF_SECTION_SYM) && !(b->flags & BSF_SECTION_SYM)) | |
| 90e3cdf2 | 3095 | return -1; |
| 699733f6 | 3096 | if (!(a->flags & BSF_SECTION_SYM) && (b->flags & BSF_SECTION_SYM)) |
| 90e3cdf2 JJ |
3097 | return 1; |
| 3098 | ||
| 699733f6 | 3099 | /* then .opd symbols. */ |
| ffcfec52 AM |
3100 | if (strcmp (a->section->name, ".opd") == 0 |
| 3101 | && strcmp (b->section->name, ".opd") != 0) | |
| 90e3cdf2 | 3102 | return -1; |
| ffcfec52 AM |
3103 | if (strcmp (a->section->name, ".opd") != 0 |
| 3104 | && strcmp (b->section->name, ".opd") == 0) | |
| 90e3cdf2 JJ |
3105 | return 1; |
| 3106 | ||
| 699733f6 | 3107 | /* then other code symbols. */ |
| 90e3cdf2 JJ |
3108 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) |
| 3109 | == (SEC_CODE | SEC_ALLOC) | |
| 3110 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3111 | != (SEC_CODE | SEC_ALLOC)) | |
| 3112 | return -1; | |
| 3113 | ||
| 3114 | if ((a->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3115 | != (SEC_CODE | SEC_ALLOC) | |
| 3116 | && (b->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3117 | == (SEC_CODE | SEC_ALLOC)) | |
| 3118 | return 1; | |
| 3119 | ||
| 3120 | if (synthetic_relocatable) | |
| 3121 | { | |
| 3122 | if (a->section->id < b->section->id) | |
| 3123 | return -1; | |
| 3124 | ||
| 3125 | if (a->section->id > b->section->id) | |
| 3126 | return 1; | |
| 3127 | } | |
| 3128 | ||
| 3129 | if (a->value + a->section->vma < b->value + b->section->vma) | |
| 3130 | return -1; | |
| 3131 | ||
| 3132 | if (a->value + a->section->vma > b->value + b->section->vma) | |
| 3133 | return 1; | |
| 3134 | ||
| 4d35a0aa AM |
3135 | /* For syms with the same value, prefer strong dynamic global function |
| 3136 | syms over other syms. */ | |
| 3137 | if ((a->flags & BSF_GLOBAL) != 0 && (b->flags & BSF_GLOBAL) == 0) | |
| 3138 | return -1; | |
| 3139 | ||
| 3140 | if ((a->flags & BSF_GLOBAL) == 0 && (b->flags & BSF_GLOBAL) != 0) | |
| 3141 | return 1; | |
| 3142 | ||
| 3143 | if ((a->flags & BSF_FUNCTION) != 0 && (b->flags & BSF_FUNCTION) == 0) | |
| 3144 | return -1; | |
| 3145 | ||
| 3146 | if ((a->flags & BSF_FUNCTION) == 0 && (b->flags & BSF_FUNCTION) != 0) | |
| 3147 | return 1; | |
| 3148 | ||
| 3149 | if ((a->flags & BSF_WEAK) == 0 && (b->flags & BSF_WEAK) != 0) | |
| 3150 | return -1; | |
| 3151 | ||
| 3152 | if ((a->flags & BSF_WEAK) != 0 && (b->flags & BSF_WEAK) == 0) | |
| 3153 | return 1; | |
| 3154 | ||
| 3155 | if ((a->flags & BSF_DYNAMIC) != 0 && (b->flags & BSF_DYNAMIC) == 0) | |
| 3156 | return -1; | |
| 3157 | ||
| 3158 | if ((a->flags & BSF_DYNAMIC) == 0 && (b->flags & BSF_DYNAMIC) != 0) | |
| 3159 | return 1; | |
| 3160 | ||
| 90e3cdf2 JJ |
3161 | return 0; |
| 3162 | } | |
| 3163 | ||
| 699733f6 | 3164 | /* Search SYMS for a symbol of the given VALUE. */ |
| 90e3cdf2 | 3165 | |
| 699733f6 | 3166 | static asymbol * |
| 7292b3ac | 3167 | sym_exists_at (asymbol **syms, long lo, long hi, unsigned int id, bfd_vma value) |
| 90e3cdf2 | 3168 | { |
| 699733f6 | 3169 | long mid; |
| 90e3cdf2 | 3170 | |
| 7292b3ac | 3171 | if (id == (unsigned) -1) |
| 699733f6 AM |
3172 | { |
| 3173 | while (lo < hi) | |
| 3174 | { | |
| 3175 | mid = (lo + hi) >> 1; | |
| 3176 | if (syms[mid]->value + syms[mid]->section->vma < value) | |
| 3177 | lo = mid + 1; | |
| 3178 | else if (syms[mid]->value + syms[mid]->section->vma > value) | |
| 3179 | hi = mid; | |
| 3180 | else | |
| 3181 | return syms[mid]; | |
| 3182 | } | |
| 3183 | } | |
| 3184 | else | |
| 3185 | { | |
| 3186 | while (lo < hi) | |
| 3187 | { | |
| 3188 | mid = (lo + hi) >> 1; | |
| 3189 | if (syms[mid]->section->id < id) | |
| 3190 | lo = mid + 1; | |
| 3191 | else if (syms[mid]->section->id > id) | |
| 3192 | hi = mid; | |
| 3193 | else if (syms[mid]->value < value) | |
| 3194 | lo = mid + 1; | |
| 3195 | else if (syms[mid]->value > value) | |
| 3196 | hi = mid; | |
| 3197 | else | |
| 3198 | return syms[mid]; | |
| 3199 | } | |
| 3200 | } | |
| 3201 | return NULL; | |
| 90e3cdf2 JJ |
3202 | } |
| 3203 | ||
| 468392fb AM |
3204 | static bfd_boolean |
| 3205 | section_covers_vma (bfd *abfd ATTRIBUTE_UNUSED, asection *section, void *ptr) | |
| 3206 | { | |
| 3207 | bfd_vma vma = *(bfd_vma *) ptr; | |
| 3208 | return ((section->flags & SEC_ALLOC) != 0 | |
| 3209 | && section->vma <= vma | |
| 3210 | && vma < section->vma + section->size); | |
| 3211 | } | |
| 3212 | ||
| 699733f6 | 3213 | /* Create synthetic symbols, effectively restoring "dot-symbol" function |
| c4b0b099 AM |
3214 | entry syms. Also generate @plt symbols for the glink branch table. |
| 3215 | Returns count of synthetic symbols in RET or -1 on error. */ | |
| 90e3cdf2 JJ |
3216 | |
| 3217 | static long | |
| a7535cf3 AM |
3218 | ppc64_elf_get_synthetic_symtab (bfd *abfd, |
| 3219 | long static_count, asymbol **static_syms, | |
| 3220 | long dyn_count, asymbol **dyn_syms, | |
| c9727e01 | 3221 | asymbol **ret) |
| 90e3cdf2 JJ |
3222 | { |
| 3223 | asymbol *s; | |
| 699733f6 AM |
3224 | long i; |
| 3225 | long count; | |
| 90e3cdf2 | 3226 | char *names; |
| a7535cf3 | 3227 | long symcount, codesecsym, codesecsymend, secsymend, opdsymend; |
| ee67d69a | 3228 | asection *opd = NULL; |
| 90e3cdf2 | 3229 | bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0; |
| a7535cf3 | 3230 | asymbol **syms; |
| ee67d69a | 3231 | int abi = abiversion (abfd); |
| 90e3cdf2 JJ |
3232 | |
| 3233 | *ret = NULL; | |
| 3234 | ||
| ee67d69a AM |
3235 | if (abi < 2) |
| 3236 | { | |
| 3237 | opd = bfd_get_section_by_name (abfd, ".opd"); | |
| 3238 | if (opd == NULL && abi == 1) | |
| 3239 | return 0; | |
| 3240 | } | |
| 90e3cdf2 | 3241 | |
| a7535cf3 | 3242 | symcount = static_count; |
| c9727e01 | 3243 | if (!relocatable) |
| a7535cf3 | 3244 | symcount += dyn_count; |
| 90e3cdf2 | 3245 | if (symcount == 0) |
| c9727e01 | 3246 | return 0; |
| 90e3cdf2 | 3247 | |
| a7535cf3 AM |
3248 | syms = bfd_malloc ((symcount + 1) * sizeof (*syms)); |
| 3249 | if (syms == NULL) | |
| 7356fed5 | 3250 | return -1; |
| a7535cf3 AM |
3251 | |
| 3252 | if (!relocatable && static_count != 0 && dyn_count != 0) | |
| 3253 | { | |
| 3254 | /* Use both symbol tables. */ | |
| 3255 | memcpy (syms, static_syms, static_count * sizeof (*syms)); | |
| 3256 | memcpy (syms + static_count, dyn_syms, (dyn_count + 1) * sizeof (*syms)); | |
| 3257 | } | |
| 3258 | else if (!relocatable && static_count == 0) | |
| 3259 | memcpy (syms, dyn_syms, (symcount + 1) * sizeof (*syms)); | |
| 3260 | else | |
| 3261 | memcpy (syms, static_syms, (symcount + 1) * sizeof (*syms)); | |
| 3262 | ||
| 90e3cdf2 | 3263 | synthetic_relocatable = relocatable; |
| 595da8c5 | 3264 | qsort (syms, symcount, sizeof (*syms), compare_symbols); |
| 90e3cdf2 | 3265 | |
| c9727e01 AM |
3266 | if (!relocatable && symcount > 1) |
| 3267 | { | |
| 3268 | long j; | |
| 3269 | /* Trim duplicate syms, since we may have merged the normal and | |
| 3270 | dynamic symbols. Actually, we only care about syms that have | |
| 3b36f7e6 | 3271 | different values, so trim any with the same value. */ |
| c9727e01 AM |
3272 | for (i = 1, j = 1; i < symcount; ++i) |
| 3273 | if (syms[i - 1]->value + syms[i - 1]->section->vma | |
| 3274 | != syms[i]->value + syms[i]->section->vma) | |
| 3275 | syms[j++] = syms[i]; | |
| 3276 | symcount = j; | |
| 3277 | } | |
| 3278 | ||
| 699733f6 | 3279 | i = 0; |
| ffcfec52 | 3280 | if (strcmp (syms[i]->section->name, ".opd") == 0) |
| 699733f6 AM |
3281 | ++i; |
| 3282 | codesecsym = i; | |
| 90e3cdf2 | 3283 | |
| 699733f6 AM |
3284 | for (; i < symcount; ++i) |
| 3285 | if (((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3286 | != (SEC_CODE | SEC_ALLOC)) | |
| 3287 | || (syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3288 | break; | |
| 3289 | codesecsymend = i; | |
| 90e3cdf2 | 3290 | |
| 699733f6 AM |
3291 | for (; i < symcount; ++i) |
| 3292 | if ((syms[i]->flags & BSF_SECTION_SYM) == 0) | |
| 3293 | break; | |
| 3294 | secsymend = i; | |
| 90e3cdf2 | 3295 | |
| 699733f6 | 3296 | for (; i < symcount; ++i) |
| ffcfec52 | 3297 | if (strcmp (syms[i]->section->name, ".opd") != 0) |
| 699733f6 AM |
3298 | break; |
| 3299 | opdsymend = i; | |
| 90e3cdf2 | 3300 | |
| 699733f6 AM |
3301 | for (; i < symcount; ++i) |
| 3302 | if ((syms[i]->section->flags & (SEC_CODE | SEC_ALLOC | SEC_THREAD_LOCAL)) | |
| 3303 | != (SEC_CODE | SEC_ALLOC)) | |
| 3304 | break; | |
| 3305 | symcount = i; | |
| 3306 | ||
| c9727e01 | 3307 | count = 0; |
| 90e3cdf2 | 3308 | |
| 699733f6 | 3309 | if (relocatable) |
| 90e3cdf2 | 3310 | { |
| 699733f6 AM |
3311 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| 3312 | arelent *r; | |
| 3313 | size_t size; | |
| 3314 | long relcount; | |
| 90e3cdf2 | 3315 | |
| 468392fb AM |
3316 | if (opdsymend == secsymend) |
| 3317 | goto done; | |
| 3318 | ||
| 699733f6 | 3319 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; |
| 90e3cdf2 | 3320 | relcount = (opd->flags & SEC_RELOC) ? opd->reloc_count : 0; |
| 7356fed5 | 3321 | if (relcount == 0) |
| c9727e01 | 3322 | goto done; |
| 90e3cdf2 | 3323 | |
| 7356fed5 AM |
3324 | if (!(*slurp_relocs) (abfd, opd, static_syms, FALSE)) |
| 3325 | { | |
| 3326 | count = -1; | |
| 3327 | goto done; | |
| 3328 | } | |
| 3329 | ||
| 699733f6 | 3330 | size = 0; |
| 595da8c5 | 3331 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 699733f6 AM |
3332 | { |
| 3333 | asymbol *sym; | |
| 90e3cdf2 | 3334 | |
| 595da8c5 | 3335 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3336 | && r->address < syms[i]->value + opd->vma) |
| 3337 | ++r; | |
| 90e3cdf2 | 3338 | |
| 595da8c5 | 3339 | if (r == opd->relocation + relcount) |
| 699733f6 | 3340 | break; |
| 90e3cdf2 | 3341 | |
| 699733f6 AM |
3342 | if (r->address != syms[i]->value + opd->vma) |
| 3343 | continue; | |
| 90e3cdf2 | 3344 | |
| 699733f6 AM |
3345 | if (r->howto->type != R_PPC64_ADDR64) |
| 3346 | continue; | |
| 90e3cdf2 | 3347 | |
| 699733f6 AM |
3348 | sym = *r->sym_ptr_ptr; |
| 3349 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3350 | sym->section->id, sym->value + r->addend)) | |
| 3351 | { | |
| 3352 | ++count; | |
| 3353 | size += sizeof (asymbol); | |
| 3354 | size += strlen (syms[i]->name) + 2; | |
| 3355 | } | |
| 3356 | } | |
| 90e3cdf2 | 3357 | |
| c4b0b099 AM |
3358 | if (size == 0) |
| 3359 | goto done; | |
| 699733f6 AM |
3360 | s = *ret = bfd_malloc (size); |
| 3361 | if (s == NULL) | |
| 3362 | { | |
| 7356fed5 | 3363 | count = -1; |
| c9727e01 | 3364 | goto done; |
| 699733f6 | 3365 | } |
| 90e3cdf2 | 3366 | |
| 699733f6 | 3367 | names = (char *) (s + count); |
| 90e3cdf2 | 3368 | |
| 595da8c5 | 3369 | for (i = secsymend, r = opd->relocation; i < opdsymend; ++i) |
| 90e3cdf2 | 3370 | { |
| 699733f6 | 3371 | asymbol *sym; |
| 90e3cdf2 | 3372 | |
| 595da8c5 | 3373 | while (r < opd->relocation + relcount |
| 699733f6 AM |
3374 | && r->address < syms[i]->value + opd->vma) |
| 3375 | ++r; | |
| 90e3cdf2 | 3376 | |
| 595da8c5 | 3377 | if (r == opd->relocation + relcount) |
| 699733f6 AM |
3378 | break; |
| 3379 | ||
| 3380 | if (r->address != syms[i]->value + opd->vma) | |
| 3381 | continue; | |
| 3382 | ||
| 3383 | if (r->howto->type != R_PPC64_ADDR64) | |
| 3384 | continue; | |
| 90e3cdf2 | 3385 | |
| 699733f6 AM |
3386 | sym = *r->sym_ptr_ptr; |
| 3387 | if (!sym_exists_at (syms, opdsymend, symcount, | |
| 3388 | sym->section->id, sym->value + r->addend)) | |
| 3389 | { | |
| 3390 | size_t len; | |
| 3391 | ||
| 3392 | *s = *syms[i]; | |
| 6ba2a415 | 3393 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3394 | s->section = sym->section; |
| 3395 | s->value = sym->value + r->addend; | |
| 3396 | s->name = names; | |
| 3397 | *names++ = '.'; | |
| 3398 | len = strlen (syms[i]->name); | |
| 3399 | memcpy (names, syms[i]->name, len + 1); | |
| 3400 | names += len + 1; | |
| 6f610d07 UW |
3401 | /* Have udata.p point back to the original symbol this |
| 3402 | synthetic symbol was derived from. */ | |
| 3403 | s->udata.p = syms[i]; | |
| 699733f6 AM |
3404 | s++; |
| 3405 | } | |
| 3406 | } | |
| 3407 | } | |
| 3408 | else | |
| 90e3cdf2 | 3409 | { |
| 468392fb | 3410 | bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean); |
| ee67d69a | 3411 | bfd_byte *contents = NULL; |
| 699733f6 | 3412 | size_t size; |
| 468392fb AM |
3413 | long plt_count = 0; |
| 3414 | bfd_vma glink_vma = 0, resolv_vma = 0; | |
| 3415 | asection *dynamic, *glink = NULL, *relplt = NULL; | |
| 3416 | arelent *p; | |
| 90e3cdf2 | 3417 | |
| ee67d69a | 3418 | if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents)) |
| 699733f6 | 3419 | { |
| c4b0b099 AM |
3420 | free_contents_and_exit_err: |
| 3421 | count = -1; | |
| ee67d69a | 3422 | free_contents_and_exit: |
| 699733f6 | 3423 | if (contents) |
| ee67d69a | 3424 | free (contents); |
| c9727e01 | 3425 | goto done; |
| 699733f6 | 3426 | } |
| 90e3cdf2 | 3427 | |
| 699733f6 AM |
3428 | size = 0; |
| 3429 | for (i = secsymend; i < opdsymend; ++i) | |
| 3430 | { | |
| 3431 | bfd_vma ent; | |
| 90e3cdf2 | 3432 | |
| 5ef11c02 AM |
3433 | /* Ignore bogus symbols. */ |
| 3434 | if (syms[i]->value > opd->size - 8) | |
| 3435 | continue; | |
| 3436 | ||
| 699733f6 AM |
3437 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3438 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 3439 | { | |
| 3440 | ++count; | |
| 3441 | size += sizeof (asymbol); | |
| 3442 | size += strlen (syms[i]->name) + 2; | |
| 3443 | } | |
| 3444 | } | |
| 90e3cdf2 | 3445 | |
| 468392fb | 3446 | /* Get start of .glink stubs from DT_PPC64_GLINK. */ |
| 066ee829 AM |
3447 | if (dyn_count != 0 |
| 3448 | && (dynamic = bfd_get_section_by_name (abfd, ".dynamic")) != NULL) | |
| 468392fb AM |
3449 | { |
| 3450 | bfd_byte *dynbuf, *extdyn, *extdynend; | |
| 3451 | size_t extdynsize; | |
| 3452 | void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *); | |
| 3453 | ||
| 3454 | if (!bfd_malloc_and_get_section (abfd, dynamic, &dynbuf)) | |
| c4b0b099 | 3455 | goto free_contents_and_exit_err; |
| 468392fb AM |
3456 | |
| 3457 | extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn; | |
| 3458 | swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in; | |
| 3459 | ||
| 3460 | extdyn = dynbuf; | |
| 3461 | extdynend = extdyn + dynamic->size; | |
| 3462 | for (; extdyn < extdynend; extdyn += extdynsize) | |
| 3463 | { | |
| 3464 | Elf_Internal_Dyn dyn; | |
| 3465 | (*swap_dyn_in) (abfd, extdyn, &dyn); | |
| 3466 | ||
| 3467 | if (dyn.d_tag == DT_NULL) | |
| 3468 | break; | |
| 3469 | ||
| 3470 | if (dyn.d_tag == DT_PPC64_GLINK) | |
| 3471 | { | |
| b9e5796b AM |
3472 | /* The first glink stub starts at offset 32; see |
| 3473 | comment in ppc64_elf_finish_dynamic_sections. */ | |
| 3474 | glink_vma = dyn.d_un.d_val + GLINK_CALL_STUB_SIZE - 8 * 4; | |
| 468392fb AM |
3475 | /* The .glink section usually does not survive the final |
| 3476 | link; search for the section (usually .text) where the | |
| 3477 | glink stubs now reside. */ | |
| 3478 | glink = bfd_sections_find_if (abfd, section_covers_vma, | |
| 3479 | &glink_vma); | |
| 3480 | break; | |
| 3481 | } | |
| 3482 | } | |
| 3483 | ||
| 3484 | free (dynbuf); | |
| 3485 | } | |
| 3486 | ||
| 3487 | if (glink != NULL) | |
| 3488 | { | |
| 3489 | /* Determine __glink trampoline by reading the relative branch | |
| 3490 | from the first glink stub. */ | |
| 3491 | bfd_byte buf[4]; | |
| b9e5796b AM |
3492 | unsigned int off = 0; |
| 3493 | ||
| 3494 | while (bfd_get_section_contents (abfd, glink, buf, | |
| 3495 | glink_vma + off - glink->vma, 4)) | |
| 468392fb AM |
3496 | { |
| 3497 | unsigned int insn = bfd_get_32 (abfd, buf); | |
| 3498 | insn ^= B_DOT; | |
| 3499 | if ((insn & ~0x3fffffc) == 0) | |
| b9e5796b AM |
3500 | { |
| 3501 | resolv_vma = glink_vma + off + (insn ^ 0x2000000) - 0x2000000; | |
| 3502 | break; | |
| 3503 | } | |
| 3504 | off += 4; | |
| 3505 | if (off > 4) | |
| 3506 | break; | |
| 468392fb AM |
3507 | } |
| 3508 | ||
| 3509 | if (resolv_vma) | |
| 3510 | size += sizeof (asymbol) + sizeof ("__glink_PLTresolve"); | |
| 468392fb | 3511 | |
| 066ee829 AM |
3512 | relplt = bfd_get_section_by_name (abfd, ".rela.plt"); |
| 3513 | if (relplt != NULL) | |
| 3514 | { | |
| 3515 | slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table; | |
| 3516 | if (! (*slurp_relocs) (abfd, relplt, dyn_syms, TRUE)) | |
| c4b0b099 | 3517 | goto free_contents_and_exit_err; |
| 68ffbac6 | 3518 | |
| 066ee829 AM |
3519 | plt_count = relplt->size / sizeof (Elf64_External_Rela); |
| 3520 | size += plt_count * sizeof (asymbol); | |
| 468392fb | 3521 | |
| 066ee829 AM |
3522 | p = relplt->relocation; |
| 3523 | for (i = 0; i < plt_count; i++, p++) | |
| e054468f AM |
3524 | { |
| 3525 | size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt"); | |
| 3526 | if (p->addend != 0) | |
| 3527 | size += sizeof ("+0x") - 1 + 16; | |
| 3528 | } | |
| 066ee829 | 3529 | } |
| 468392fb AM |
3530 | } |
| 3531 | ||
| c4b0b099 AM |
3532 | if (size == 0) |
| 3533 | goto free_contents_and_exit; | |
| 699733f6 AM |
3534 | s = *ret = bfd_malloc (size); |
| 3535 | if (s == NULL) | |
| c4b0b099 | 3536 | goto free_contents_and_exit_err; |
| 90e3cdf2 | 3537 | |
| 468392fb | 3538 | names = (char *) (s + count + plt_count + (resolv_vma != 0)); |
| 90e3cdf2 | 3539 | |
| 699733f6 | 3540 | for (i = secsymend; i < opdsymend; ++i) |
| 90e3cdf2 | 3541 | { |
| 699733f6 | 3542 | bfd_vma ent; |
| 90e3cdf2 | 3543 | |
| 5ef11c02 AM |
3544 | if (syms[i]->value > opd->size - 8) |
| 3545 | continue; | |
| 3546 | ||
| 699733f6 AM |
3547 | ent = bfd_get_64 (abfd, contents + syms[i]->value); |
| 3548 | if (!sym_exists_at (syms, opdsymend, symcount, -1, ent)) | |
| 90e3cdf2 | 3549 | { |
| c9727e01 | 3550 | long lo, hi; |
| 699733f6 | 3551 | size_t len; |
| c9727e01 | 3552 | asection *sec = abfd->sections; |
| 90e3cdf2 | 3553 | |
| 699733f6 AM |
3554 | *s = *syms[i]; |
| 3555 | lo = codesecsym; | |
| 3556 | hi = codesecsymend; | |
| 3557 | while (lo < hi) | |
| 3558 | { | |
| c9727e01 | 3559 | long mid = (lo + hi) >> 1; |
| 699733f6 AM |
3560 | if (syms[mid]->section->vma < ent) |
| 3561 | lo = mid + 1; | |
| 3562 | else if (syms[mid]->section->vma > ent) | |
| 3563 | hi = mid; | |
| 3564 | else | |
| c9727e01 AM |
3565 | { |
| 3566 | sec = syms[mid]->section; | |
| 3567 | break; | |
| 3568 | } | |
| 699733f6 AM |
3569 | } |
| 3570 | ||
| c9727e01 | 3571 | if (lo >= hi && lo > codesecsym) |
| 699733f6 | 3572 | sec = syms[lo - 1]->section; |
| 699733f6 AM |
3573 | |
| 3574 | for (; sec != NULL; sec = sec->next) | |
| 3575 | { | |
| 3576 | if (sec->vma > ent) | |
| 3577 | break; | |
| 63524580 JK |
3578 | /* SEC_LOAD may not be set if SEC is from a separate debug |
| 3579 | info file. */ | |
| 3580 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 699733f6 AM |
3581 | break; |
| 3582 | if ((sec->flags & SEC_CODE) != 0) | |
| 3583 | s->section = sec; | |
| 3584 | } | |
| 6ba2a415 | 3585 | s->flags |= BSF_SYNTHETIC; |
| 699733f6 AM |
3586 | s->value = ent - s->section->vma; |
| 3587 | s->name = names; | |
| 3588 | *names++ = '.'; | |
| 3589 | len = strlen (syms[i]->name); | |
| 3590 | memcpy (names, syms[i]->name, len + 1); | |
| 3591 | names += len + 1; | |
| 6f610d07 UW |
3592 | /* Have udata.p point back to the original symbol this |
| 3593 | synthetic symbol was derived from. */ | |
| 3594 | s->udata.p = syms[i]; | |
| 699733f6 | 3595 | s++; |
| 90e3cdf2 | 3596 | } |
| 90e3cdf2 | 3597 | } |
| 699733f6 | 3598 | free (contents); |
| 468392fb AM |
3599 | |
| 3600 | if (glink != NULL && relplt != NULL) | |
| 3601 | { | |
| 3602 | if (resolv_vma) | |
| 3603 | { | |
| 3604 | /* Add a symbol for the main glink trampoline. */ | |
| 86a4952b | 3605 | memset (s, 0, sizeof *s); |
| 468392fb | 3606 | s->the_bfd = abfd; |
| 6ba2a415 | 3607 | s->flags = BSF_GLOBAL | BSF_SYNTHETIC; |
| 468392fb AM |
3608 | s->section = glink; |
| 3609 | s->value = resolv_vma - glink->vma; | |
| 3610 | s->name = names; | |
| 3611 | memcpy (names, "__glink_PLTresolve", sizeof ("__glink_PLTresolve")); | |
| 3612 | names += sizeof ("__glink_PLTresolve"); | |
| 3613 | s++; | |
| 3614 | count++; | |
| 3615 | } | |
| 3616 | ||
| 3617 | /* FIXME: It would be very much nicer to put sym@plt on the | |
| 3618 | stub rather than on the glink branch table entry. The | |
| 3619 | objdump disassembler would then use a sensible symbol | |
| 3620 | name on plt calls. The difficulty in doing so is | |
| 3621 | a) finding the stubs, and, | |
| 3622 | b) matching stubs against plt entries, and, | |
| 3623 | c) there can be multiple stubs for a given plt entry. | |
| 3624 | ||
| 3625 | Solving (a) could be done by code scanning, but older | |
| 3626 | ppc64 binaries used different stubs to current code. | |
| 3627 | (b) is the tricky one since you need to known the toc | |
| 3628 | pointer for at least one function that uses a pic stub to | |
| 3629 | be able to calculate the plt address referenced. | |
| 3630 | (c) means gdb would need to set multiple breakpoints (or | |
| 3631 | find the glink branch itself) when setting breakpoints | |
| 3632 | for pending shared library loads. */ | |
| 3633 | p = relplt->relocation; | |
| 3634 | for (i = 0; i < plt_count; i++, p++) | |
| 3635 | { | |
| 3636 | size_t len; | |
| 3637 | ||
| 3638 | *s = **p->sym_ptr_ptr; | |
| 3639 | /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since | |
| 3640 | we are defining a symbol, ensure one of them is set. */ | |
| 3641 | if ((s->flags & BSF_LOCAL) == 0) | |
| 3642 | s->flags |= BSF_GLOBAL; | |
| 6ba2a415 | 3643 | s->flags |= BSF_SYNTHETIC; |
| 468392fb AM |
3644 | s->section = glink; |
| 3645 | s->value = glink_vma - glink->vma; | |
| 3646 | s->name = names; | |
| 3647 | s->udata.p = NULL; | |
| 3648 | len = strlen ((*p->sym_ptr_ptr)->name); | |
| 3649 | memcpy (names, (*p->sym_ptr_ptr)->name, len); | |
| 3650 | names += len; | |
| e054468f AM |
3651 | if (p->addend != 0) |
| 3652 | { | |
| 3653 | memcpy (names, "+0x", sizeof ("+0x") - 1); | |
| 3654 | names += sizeof ("+0x") - 1; | |
| 3655 | bfd_sprintf_vma (abfd, names, p->addend); | |
| 3656 | names += strlen (names); | |
| 3657 | } | |
| 468392fb AM |
3658 | memcpy (names, "@plt", sizeof ("@plt")); |
| 3659 | names += sizeof ("@plt"); | |
| 3660 | s++; | |
| b9e5796b AM |
3661 | if (abi < 2) |
| 3662 | { | |
| 3663 | glink_vma += 8; | |
| 3664 | if (i >= 0x8000) | |
| 3665 | glink_vma += 4; | |
| 3666 | } | |
| 3667 | else | |
| 468392fb AM |
3668 | glink_vma += 4; |
| 3669 | } | |
| 3670 | count += plt_count; | |
| 3671 | } | |
| 90e3cdf2 JJ |
3672 | } |
| 3673 | ||
| c9727e01 | 3674 | done: |
| a7535cf3 | 3675 | free (syms); |
| 90e3cdf2 JJ |
3676 | return count; |
| 3677 | } | |
| 5bd4f169 | 3678 | \f |
| 65f38f15 AM |
3679 | /* The following functions are specific to the ELF linker, while |
| 3680 | functions above are used generally. Those named ppc64_elf_* are | |
| 3681 | called by the main ELF linker code. They appear in this file more | |
| 3682 | or less in the order in which they are called. eg. | |
| 3683 | ppc64_elf_check_relocs is called early in the link process, | |
| 3684 | ppc64_elf_finish_dynamic_sections is one of the last functions | |
| e86ce104 AM |
3685 | called. |
| 3686 | ||
| 3687 | PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that | |
| 3688 | functions have both a function code symbol and a function descriptor | |
| 3689 | symbol. A call to foo in a relocatable object file looks like: | |
| 3690 | ||
| 3691 | . .text | |
| 3692 | . x: | |
| 3693 | . bl .foo | |
| 3694 | . nop | |
| 3695 | ||
| 3696 | The function definition in another object file might be: | |
| 3697 | ||
| 3698 | . .section .opd | |
| 3699 | . foo: .quad .foo | |
| 3700 | . .quad .TOC.@tocbase | |
| 3701 | . .quad 0 | |
| 3702 | . | |
| 3703 | . .text | |
| 3704 | . .foo: blr | |
| 3705 | ||
| 3706 | When the linker resolves the call during a static link, the branch | |
| 3707 | unsurprisingly just goes to .foo and the .opd information is unused. | |
| 3708 | If the function definition is in a shared library, things are a little | |
| 3709 | different: The call goes via a plt call stub, the opd information gets | |
| 3710 | copied to the plt, and the linker patches the nop. | |
| 3711 | ||
| 3712 | . x: | |
| 3713 | . bl .foo_stub | |
| 3714 | . ld 2,40(1) | |
| 3715 | . | |
| 3716 | . | |
| 3717 | . .foo_stub: | |
| 71a39c98 AM |
3718 | . std 2,40(1) # in practice, the call stub |
| 3719 | . addis 11,2,Lfoo@toc@ha # is slightly optimized, but | |
| 3720 | . addi 11,11,Lfoo@toc@l # this is the general idea | |
| 3721 | . ld 12,0(11) | |
| 3722 | . ld 2,8(11) | |
| 3723 | . mtctr 12 | |
| 3724 | . ld 11,16(11) | |
| e86ce104 AM |
3725 | . bctr |
| 3726 | . | |
| 3727 | . .section .plt | |
| 3728 | . Lfoo: reloc (R_PPC64_JMP_SLOT, foo) | |
| 3729 | ||
| 3730 | The "reloc ()" notation is supposed to indicate that the linker emits | |
| 3731 | an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd | |
| 3732 | copying. | |
| 3733 | ||
| 3734 | What are the difficulties here? Well, firstly, the relocations | |
| 3735 | examined by the linker in check_relocs are against the function code | |
| 3736 | sym .foo, while the dynamic relocation in the plt is emitted against | |
| 3737 | the function descriptor symbol, foo. Somewhere along the line, we need | |
| 3738 | to carefully copy dynamic link information from one symbol to the other. | |
| 3739 | Secondly, the generic part of the elf linker will make .foo a dynamic | |
| 3740 | symbol as is normal for most other backends. We need foo dynamic | |
| 3741 | instead, at least for an application final link. However, when | |
| 3742 | creating a shared library containing foo, we need to have both symbols | |
| 3743 | dynamic so that references to .foo are satisfied during the early | |
| 3744 | stages of linking. Otherwise the linker might decide to pull in a | |
| 8387904d AM |
3745 | definition from some other object, eg. a static library. |
| 3746 | ||
| 3747 | Update: As of August 2004, we support a new convention. Function | |
| 3748 | calls may use the function descriptor symbol, ie. "bl foo". This | |
| 3749 | behaves exactly as "bl .foo". */ | |
| 65f38f15 | 3750 | |
| 1d483afe | 3751 | /* Of those relocs that might be copied as dynamic relocs, this function |
| 58ac9f71 AM |
3752 | selects those that must be copied when linking a shared library, |
| 3753 | even when the symbol is local. */ | |
| 65f38f15 | 3754 | |
| 1d483afe AM |
3755 | static int |
| 3756 | must_be_dyn_reloc (struct bfd_link_info *info, | |
| 3757 | enum elf_ppc64_reloc_type r_type) | |
| 3758 | { | |
| 3759 | switch (r_type) | |
| 3760 | { | |
| 3761 | default: | |
| 3762 | return 1; | |
| 3763 | ||
| 3764 | case R_PPC64_REL32: | |
| 3765 | case R_PPC64_REL64: | |
| 3766 | case R_PPC64_REL30: | |
| 3767 | return 0; | |
| 3768 | ||
| 3769 | case R_PPC64_TPREL16: | |
| 3770 | case R_PPC64_TPREL16_LO: | |
| 3771 | case R_PPC64_TPREL16_HI: | |
| 3772 | case R_PPC64_TPREL16_HA: | |
| 3773 | case R_PPC64_TPREL16_DS: | |
| 3774 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
3775 | case R_PPC64_TPREL16_HIGH: |
| 3776 | case R_PPC64_TPREL16_HIGHA: | |
| 1d483afe AM |
3777 | case R_PPC64_TPREL16_HIGHER: |
| 3778 | case R_PPC64_TPREL16_HIGHERA: | |
| 3779 | case R_PPC64_TPREL16_HIGHEST: | |
| 3780 | case R_PPC64_TPREL16_HIGHESTA: | |
| 3781 | case R_PPC64_TPREL64: | |
| 0e1862bb | 3782 | return !bfd_link_executable (info); |
| 1d483afe AM |
3783 | } |
| 3784 | } | |
| 65f38f15 | 3785 | |
| f4656909 AM |
3786 | /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid |
| 3787 | copying dynamic variables from a shared lib into an app's dynbss | |
| 3788 | section, and instead use a dynamic relocation to point into the | |
| 5d35169e AM |
3789 | shared lib. With code that gcc generates, it's vital that this be |
| 3790 | enabled; In the PowerPC64 ABI, the address of a function is actually | |
| 3791 | the address of a function descriptor, which resides in the .opd | |
| 3792 | section. gcc uses the descriptor directly rather than going via the | |
| 3793 | GOT as some other ABI's do, which means that initialized function | |
| 3794 | pointers must reference the descriptor. Thus, a function pointer | |
| 3795 | initialized to the address of a function in a shared library will | |
| 3796 | either require a copy reloc, or a dynamic reloc. Using a copy reloc | |
| 4cc11e76 | 3797 | redefines the function descriptor symbol to point to the copy. This |
| 5d35169e AM |
3798 | presents a problem as a plt entry for that function is also |
| 3799 | initialized from the function descriptor symbol and the copy reloc | |
| 3800 | may not be initialized first. */ | |
| a23b6845 | 3801 | #define ELIMINATE_COPY_RELOCS 1 |
| f4656909 | 3802 | |
| 721956f4 | 3803 | /* Section name for stubs is the associated section name plus this |
| 29942be8 NC |
3804 | string. */ |
| 3805 | #define STUB_SUFFIX ".stub" | |
| 721956f4 AM |
3806 | |
| 3807 | /* Linker stubs. | |
| 3808 | ppc_stub_long_branch: | |
| 3809 | Used when a 14 bit branch (or even a 24 bit branch) can't reach its | |
| 3810 | destination, but a 24 bit branch in a stub section will reach. | |
| 3811 | . b dest | |
| 3812 | ||
| 3813 | ppc_stub_plt_branch: | |
| 3814 | Similar to the above, but a 24 bit branch in the stub section won't | |
| 3815 | reach its destination. | |
| 71a39c98 AM |
3816 | . addis %r11,%r2,xxx@toc@ha |
| 3817 | . ld %r12,xxx@toc@l(%r11) | |
| 3818 | . mtctr %r12 | |
| 721956f4 AM |
3819 | . bctr |
| 3820 | ||
| 3821 | ppc_stub_plt_call: | |
| 2c66dc6c AM |
3822 | Used to call a function in a shared library. If it so happens that |
| 3823 | the plt entry referenced crosses a 64k boundary, then an extra | |
| 71a39c98 | 3824 | "addi %r11,%r11,xxx@toc@l" will be inserted before the "mtctr". |
| 721956f4 | 3825 | . std %r2,40(%r1) |
| 71a39c98 AM |
3826 | . addis %r11,%r2,xxx@toc@ha |
| 3827 | . ld %r12,xxx+0@toc@l(%r11) | |
| 3828 | . mtctr %r12 | |
| 3829 | . ld %r2,xxx+8@toc@l(%r11) | |
| 3830 | . ld %r11,xxx+16@toc@l(%r11) | |
| 721956f4 | 3831 | . bctr |
| ad8e1ba5 AM |
3832 | |
| 3833 | ppc_stub_long_branch and ppc_stub_plt_branch may also have additional | |
| 3834 | code to adjust the value and save r2 to support multiple toc sections. | |
| 3835 | A ppc_stub_long_branch with an r2 offset looks like: | |
| 3836 | . std %r2,40(%r1) | |
| 3837 | . addis %r2,%r2,off@ha | |
| 3838 | . addi %r2,%r2,off@l | |
| 3839 | . b dest | |
| 3840 | ||
| 3841 | A ppc_stub_plt_branch with an r2 offset looks like: | |
| 3842 | . std %r2,40(%r1) | |
| 71a39c98 AM |
3843 | . addis %r11,%r2,xxx@toc@ha |
| 3844 | . ld %r12,xxx@toc@l(%r11) | |
| ad8e1ba5 AM |
3845 | . addis %r2,%r2,off@ha |
| 3846 | . addi %r2,%r2,off@l | |
| 71a39c98 | 3847 | . mtctr %r12 |
| ad8e1ba5 | 3848 | . bctr |
| ac2df442 AM |
3849 | |
| 3850 | In cases where the "addis" instruction would add zero, the "addis" is | |
| 3851 | omitted and following instructions modified slightly in some cases. | |
| 721956f4 AM |
3852 | */ |
| 3853 | ||
| 3854 | enum ppc_stub_type { | |
| 3855 | ppc_stub_none, | |
| 3856 | ppc_stub_long_branch, | |
| ad8e1ba5 | 3857 | ppc_stub_long_branch_r2off, |
| 721956f4 | 3858 | ppc_stub_plt_branch, |
| ad8e1ba5 | 3859 | ppc_stub_plt_branch_r2off, |
| 794e51c0 | 3860 | ppc_stub_plt_call, |
| 7341d5e2 | 3861 | ppc_stub_plt_call_r2save, |
| a4b6fadd AM |
3862 | ppc_stub_global_entry, |
| 3863 | ppc_stub_save_res | |
| 721956f4 AM |
3864 | }; |
| 3865 | ||
| 6f20ed8a AM |
3866 | /* Information on stub grouping. */ |
| 3867 | struct map_stub | |
| 3868 | { | |
| 3869 | /* The stub section. */ | |
| 3870 | asection *stub_sec; | |
| 3871 | /* This is the section to which stubs in the group will be attached. */ | |
| 3872 | asection *link_sec; | |
| a4b6fadd AM |
3873 | /* Next group. */ |
| 3874 | struct map_stub *next; | |
| 3875 | /* Whether to emit a copy of register save/restore functions in this | |
| 3876 | group. */ | |
| 3877 | int needs_save_res; | |
| 6f20ed8a AM |
3878 | }; |
| 3879 | ||
| 721956f4 AM |
3880 | struct ppc_stub_hash_entry { |
| 3881 | ||
| 3882 | /* Base hash table entry structure. */ | |
| 3883 | struct bfd_hash_entry root; | |
| 3884 | ||
| ad8e1ba5 AM |
3885 | enum ppc_stub_type stub_type; |
| 3886 | ||
| 6f20ed8a AM |
3887 | /* Group information. */ |
| 3888 | struct map_stub *group; | |
| 721956f4 AM |
3889 | |
| 3890 | /* Offset within stub_sec of the beginning of this stub. */ | |
| 3891 | bfd_vma stub_offset; | |
| 3892 | ||
| 3893 | /* Given the symbol's value and its section we can determine its final | |
| 3894 | value when building the stubs (so the stub knows where to jump. */ | |
| 3895 | bfd_vma target_value; | |
| 3896 | asection *target_section; | |
| 3897 | ||
| 721956f4 AM |
3898 | /* The symbol table entry, if any, that this was derived from. */ |
| 3899 | struct ppc_link_hash_entry *h; | |
| e054468f | 3900 | struct plt_entry *plt_ent; |
| 721956f4 | 3901 | |
| 6911b7dc AM |
3902 | /* Symbol st_other. */ |
| 3903 | unsigned char other; | |
| 721956f4 AM |
3904 | }; |
| 3905 | ||
| 3906 | struct ppc_branch_hash_entry { | |
| 3907 | ||
| 3908 | /* Base hash table entry structure. */ | |
| 3909 | struct bfd_hash_entry root; | |
| 3910 | ||
| c456f082 | 3911 | /* Offset within branch lookup table. */ |
| 721956f4 AM |
3912 | unsigned int offset; |
| 3913 | ||
| 3914 | /* Generation marker. */ | |
| 3915 | unsigned int iter; | |
| 3916 | }; | |
| 65f38f15 | 3917 | |
| 19e08130 AM |
3918 | /* Used to track dynamic relocations for local symbols. */ |
| 3919 | struct ppc_dyn_relocs | |
| 3920 | { | |
| 3921 | struct ppc_dyn_relocs *next; | |
| 3922 | ||
| 3923 | /* The input section of the reloc. */ | |
| 3924 | asection *sec; | |
| 3925 | ||
| 3926 | /* Total number of relocs copied for the input section. */ | |
| 3927 | unsigned int count : 31; | |
| 3928 | ||
| 3929 | /* Whether this entry is for STT_GNU_IFUNC symbols. */ | |
| 3930 | unsigned int ifunc : 1; | |
| 3931 | }; | |
| 3932 | ||
| 65f38f15 AM |
3933 | struct ppc_link_hash_entry |
| 3934 | { | |
| 3935 | struct elf_link_hash_entry elf; | |
| 3936 | ||
| b3fac117 AM |
3937 | union { |
| 3938 | /* A pointer to the most recently used stub hash entry against this | |
| 3939 | symbol. */ | |
| 3940 | struct ppc_stub_hash_entry *stub_cache; | |
| 3941 | ||
| 3942 | /* A pointer to the next symbol starting with a '.' */ | |
| 3943 | struct ppc_link_hash_entry *next_dot_sym; | |
| 3944 | } u; | |
| 721956f4 | 3945 | |
| 65f38f15 | 3946 | /* Track dynamic relocs copied for this symbol. */ |
| 6061a67d | 3947 | struct elf_dyn_relocs *dyn_relocs; |
| e86ce104 | 3948 | |
| 721956f4 | 3949 | /* Link between function code and descriptor symbols. */ |
| 34814b9f | 3950 | struct ppc_link_hash_entry *oh; |
| 721956f4 | 3951 | |
| e86ce104 AM |
3952 | /* Flag function code and descriptor symbols. */ |
| 3953 | unsigned int is_func:1; | |
| 3954 | unsigned int is_func_descriptor:1; | |
| 908b32fc | 3955 | unsigned int fake:1; |
| 411e1bfb | 3956 | |
| c5614fa4 AM |
3957 | /* Whether global opd/toc sym has been adjusted or not. |
| 3958 | After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag | |
| 3959 | should be set for all globals defined in any opd/toc section. */ | |
| 754021d0 AM |
3960 | unsigned int adjust_done:1; |
| 3961 | ||
| 99877b66 AM |
3962 | /* Set if we twiddled this symbol to weak at some stage. */ |
| 3963 | unsigned int was_undefined:1; | |
| 3964 | ||
| a4b6fadd AM |
3965 | /* Set if this is an out-of-line register save/restore function, |
| 3966 | with non-standard calling convention. */ | |
| 3967 | unsigned int save_res:1; | |
| 3968 | ||
| 411e1bfb | 3969 | /* Contexts in which symbol is used in the GOT (or TOC). |
| e7b938ca AM |
3970 | TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the |
| 3971 | corresponding relocs are encountered during check_relocs. | |
| 3972 | tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to | |
| 3973 | indicate the corresponding GOT entry type is not needed. | |
| 3974 | tls_optimize may also set TLS_TPRELGD when a GD reloc turns into | |
| 3975 | a TPREL one. We use a separate flag rather than setting TPREL | |
| 3976 | just for convenience in distinguishing the two cases. */ | |
| 3977 | #define TLS_GD 1 /* GD reloc. */ | |
| 3978 | #define TLS_LD 2 /* LD reloc. */ | |
| 3979 | #define TLS_TPREL 4 /* TPREL reloc, => IE. */ | |
| 3980 | #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */ | |
| 3981 | #define TLS_TLS 16 /* Any TLS reloc. */ | |
| 3982 | #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */ | |
| 3983 | #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */ | |
| e054468f | 3984 | #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */ |
| f961d9dd | 3985 | unsigned char tls_mask; |
| 65f38f15 AM |
3986 | }; |
| 3987 | ||
| 3988 | /* ppc64 ELF linker hash table. */ | |
| 3989 | ||
| 3990 | struct ppc_link_hash_table | |
| 3991 | { | |
| 3992 | struct elf_link_hash_table elf; | |
| 3993 | ||
| 721956f4 AM |
3994 | /* The stub hash table. */ |
| 3995 | struct bfd_hash_table stub_hash_table; | |
| 3996 | ||
| 3997 | /* Another hash table for plt_branch stubs. */ | |
| 3998 | struct bfd_hash_table branch_hash_table; | |
| 3999 | ||
| 3b421ab3 AM |
4000 | /* Hash table for function prologue tocsave. */ |
| 4001 | htab_t tocsave_htab; | |
| 4002 | ||
| e7d1c40c AM |
4003 | /* Various options and other info passed from the linker. */ |
| 4004 | struct ppc64_elf_params *params; | |
| 721956f4 | 4005 | |
| 6f20ed8a AM |
4006 | /* The size of sec_info below. */ |
| 4007 | unsigned int sec_info_arr_size; | |
| 4008 | ||
| 4009 | /* Per-section array of extra section info. Done this way rather | |
| 4010 | than as part of ppc64_elf_section_data so we have the info for | |
| 4011 | non-ppc64 sections. */ | |
| 4012 | struct | |
| 4013 | { | |
| 4014 | /* Along with elf_gp, specifies the TOC pointer used by this section. */ | |
| ad8e1ba5 | 4015 | bfd_vma toc_off; |
| 6f20ed8a AM |
4016 | |
| 4017 | union | |
| 4018 | { | |
| 4019 | /* The section group that this section belongs to. */ | |
| 4020 | struct map_stub *group; | |
| 4021 | /* A temp section list pointer. */ | |
| 4022 | asection *list; | |
| 4023 | } u; | |
| 4024 | } *sec_info; | |
| 721956f4 | 4025 | |
| a4b6fadd AM |
4026 | /* Linked list of groups. */ |
| 4027 | struct map_stub *group; | |
| 4028 | ||
| ad8e1ba5 AM |
4029 | /* Temp used when calculating TOC pointers. */ |
| 4030 | bfd_vma toc_curr; | |
| bf102f86 AM |
4031 | bfd *toc_bfd; |
| 4032 | asection *toc_first_sec; | |
| ad8e1ba5 | 4033 | |
| b3fac117 AM |
4034 | /* Used when adding symbols. */ |
| 4035 | struct ppc_link_hash_entry *dot_syms; | |
| 4036 | ||
| 33e44f2e | 4037 | /* Shortcuts to get to dynamic linker sections. */ |
| 4ce794b7 AM |
4038 | asection *dynbss; |
| 4039 | asection *relbss; | |
| 4040 | asection *glink; | |
| 82bd7b59 | 4041 | asection *sfpr; |
| 4ce794b7 AM |
4042 | asection *brlt; |
| 4043 | asection *relbrlt; | |
| 58d180e8 | 4044 | asection *glink_eh_frame; |
| ec338859 | 4045 | |
| 8387904d AM |
4046 | /* Shortcut to .__tls_get_addr and __tls_get_addr. */ |
| 4047 | struct ppc_link_hash_entry *tls_get_addr; | |
| 4048 | struct ppc_link_hash_entry *tls_get_addr_fd; | |
| 411e1bfb | 4049 | |
| 927be08e AM |
4050 | /* The size of reliplt used by got entry relocs. */ |
| 4051 | bfd_size_type got_reli_size; | |
| 4052 | ||
| 9b5ecbd0 | 4053 | /* Statistics. */ |
| 7341d5e2 | 4054 | unsigned long stub_count[ppc_stub_global_entry]; |
| 9b5ecbd0 | 4055 | |
| ee75fd95 AM |
4056 | /* Number of stubs against global syms. */ |
| 4057 | unsigned long stub_globals; | |
| 4058 | ||
| ee67d69a AM |
4059 | /* Set if we're linking code with function descriptors. */ |
| 4060 | unsigned int opd_abi:1; | |
| 4061 | ||
| 4c52953f | 4062 | /* Support for multiple toc sections. */ |
| 33c0ec9d | 4063 | unsigned int do_multi_toc:1; |
| 4c52953f | 4064 | unsigned int multi_toc_needed:1; |
| 927be08e | 4065 | unsigned int second_toc_pass:1; |
| 67f0cbdb | 4066 | unsigned int do_toc_opt:1; |
| 4c52953f | 4067 | |
| 5d1634d7 | 4068 | /* Set on error. */ |
| 99877b66 | 4069 | unsigned int stub_error:1; |
| 721956f4 | 4070 | |
| f6c7c3e8 | 4071 | /* Temp used by ppc64_elf_before_check_relocs. */ |
| 99877b66 | 4072 | unsigned int twiddled_syms:1; |
| 721956f4 AM |
4073 | |
| 4074 | /* Incremented every time we size stubs. */ | |
| 4075 | unsigned int stub_iteration; | |
| 5d1634d7 | 4076 | |
| 87d72d41 AM |
4077 | /* Small local sym cache. */ |
| 4078 | struct sym_cache sym_cache; | |
| 65f38f15 AM |
4079 | }; |
| 4080 | ||
| 4c52953f AM |
4081 | /* Rename some of the generic section flags to better document how they |
| 4082 | are used here. */ | |
| b0dddeec AM |
4083 | |
| 4084 | /* Nonzero if this section has TLS related relocations. */ | |
| 4085 | #define has_tls_reloc sec_flg0 | |
| 4086 | ||
| 4087 | /* Nonzero if this section has a call to __tls_get_addr. */ | |
| 4088 | #define has_tls_get_addr_call sec_flg1 | |
| 4089 | ||
| 4090 | /* Nonzero if this section has any toc or got relocs. */ | |
| 4091 | #define has_toc_reloc sec_flg2 | |
| 4092 | ||
| 4093 | /* Nonzero if this section has a call to another section that uses | |
| 4094 | the toc or got. */ | |
| d77c8a4b | 4095 | #define makes_toc_func_call sec_flg3 |
| b0dddeec AM |
4096 | |
| 4097 | /* Recursion protection when determining above flag. */ | |
| d77c8a4b | 4098 | #define call_check_in_progress sec_flg4 |
| 70cc837d | 4099 | #define call_check_done sec_flg5 |
| 4c52953f | 4100 | |
| 65f38f15 AM |
4101 | /* Get the ppc64 ELF linker hash table from a link_info structure. */ |
| 4102 | ||
| 4103 | #define ppc_hash_table(p) \ | |
| 4dfe6ac6 NC |
4104 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
| 4105 | == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL) | |
| 65f38f15 | 4106 | |
| 721956f4 AM |
4107 | #define ppc_stub_hash_lookup(table, string, create, copy) \ |
| 4108 | ((struct ppc_stub_hash_entry *) \ | |
| 4109 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 4110 | ||
| 4111 | #define ppc_branch_hash_lookup(table, string, create, copy) \ | |
| 4112 | ((struct ppc_branch_hash_entry *) \ | |
| 4113 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
| 4114 | ||
| 4115 | /* Create an entry in the stub hash table. */ | |
| 4116 | ||
| 4117 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4118 | stub_hash_newfunc (struct bfd_hash_entry *entry, |
| 4119 | struct bfd_hash_table *table, | |
| 4120 | const char *string) | |
| 721956f4 AM |
4121 | { |
| 4122 | /* Allocate the structure if it has not already been allocated by a | |
| 4123 | subclass. */ | |
| 4124 | if (entry == NULL) | |
| 4125 | { | |
| 4126 | entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry)); | |
| 4127 | if (entry == NULL) | |
| 4128 | return entry; | |
| 4129 | } | |
| 4130 | ||
| 4131 | /* Call the allocation method of the superclass. */ | |
| 4132 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4133 | if (entry != NULL) | |
| 4134 | { | |
| 4135 | struct ppc_stub_hash_entry *eh; | |
| 4136 | ||
| 4137 | /* Initialize the local fields. */ | |
| 4138 | eh = (struct ppc_stub_hash_entry *) entry; | |
| ad8e1ba5 | 4139 | eh->stub_type = ppc_stub_none; |
| 6f20ed8a | 4140 | eh->group = NULL; |
| 721956f4 AM |
4141 | eh->stub_offset = 0; |
| 4142 | eh->target_value = 0; | |
| 4143 | eh->target_section = NULL; | |
| 721956f4 | 4144 | eh->h = NULL; |
| 6911b7dc | 4145 | eh->plt_ent = NULL; |
| 6911b7dc | 4146 | eh->other = 0; |
| 721956f4 AM |
4147 | } |
| 4148 | ||
| 4149 | return entry; | |
| 4150 | } | |
| 4151 | ||
| 4152 | /* Create an entry in the branch hash table. */ | |
| 4153 | ||
| 4154 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4155 | branch_hash_newfunc (struct bfd_hash_entry *entry, |
| 4156 | struct bfd_hash_table *table, | |
| 4157 | const char *string) | |
| 721956f4 AM |
4158 | { |
| 4159 | /* Allocate the structure if it has not already been allocated by a | |
| 4160 | subclass. */ | |
| 4161 | if (entry == NULL) | |
| 4162 | { | |
| 4163 | entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry)); | |
| 4164 | if (entry == NULL) | |
| 4165 | return entry; | |
| 4166 | } | |
| 4167 | ||
| 4168 | /* Call the allocation method of the superclass. */ | |
| 4169 | entry = bfd_hash_newfunc (entry, table, string); | |
| 4170 | if (entry != NULL) | |
| 4171 | { | |
| 4172 | struct ppc_branch_hash_entry *eh; | |
| 4173 | ||
| 4174 | /* Initialize the local fields. */ | |
| 4175 | eh = (struct ppc_branch_hash_entry *) entry; | |
| 4176 | eh->offset = 0; | |
| 4177 | eh->iter = 0; | |
| 4178 | } | |
| 4179 | ||
| 4180 | return entry; | |
| 4181 | } | |
| 4182 | ||
| 65f38f15 AM |
4183 | /* Create an entry in a ppc64 ELF linker hash table. */ |
| 4184 | ||
| 4185 | static struct bfd_hash_entry * | |
| 4ce794b7 AM |
4186 | link_hash_newfunc (struct bfd_hash_entry *entry, |
| 4187 | struct bfd_hash_table *table, | |
| 4188 | const char *string) | |
| 65f38f15 AM |
4189 | { |
| 4190 | /* Allocate the structure if it has not already been allocated by a | |
| 4191 | subclass. */ | |
| 4192 | if (entry == NULL) | |
| 4193 | { | |
| 4194 | entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry)); | |
| 4195 | if (entry == NULL) | |
| 4196 | return entry; | |
| 4197 | } | |
| 4198 | ||
| 4199 | /* Call the allocation method of the superclass. */ | |
| 4200 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
| 4201 | if (entry != NULL) | |
| 4202 | { | |
| 4203 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry; | |
| 4204 | ||
| b3fac117 | 4205 | memset (&eh->u.stub_cache, 0, |
| 908b32fc | 4206 | (sizeof (struct ppc_link_hash_entry) |
| b3fac117 AM |
4207 | - offsetof (struct ppc_link_hash_entry, u.stub_cache))); |
| 4208 | ||
| 4209 | /* When making function calls, old ABI code references function entry | |
| 4210 | points (dot symbols), while new ABI code references the function | |
| 4211 | descriptor symbol. We need to make any combination of reference and | |
| 4212 | definition work together, without breaking archive linking. | |
| 4213 | ||
| 4214 | For a defined function "foo" and an undefined call to "bar": | |
| 4215 | An old object defines "foo" and ".foo", references ".bar" (possibly | |
| 4216 | "bar" too). | |
| 4217 | A new object defines "foo" and references "bar". | |
| 4218 | ||
| 4219 | A new object thus has no problem with its undefined symbols being | |
| 4220 | satisfied by definitions in an old object. On the other hand, the | |
| 4221 | old object won't have ".bar" satisfied by a new object. | |
| 4222 | ||
| 4223 | Keep a list of newly added dot-symbols. */ | |
| 4224 | ||
| 4225 | if (string[0] == '.') | |
| 4226 | { | |
| 4227 | struct ppc_link_hash_table *htab; | |
| 4228 | ||
| 4229 | htab = (struct ppc_link_hash_table *) table; | |
| 4230 | eh->u.next_dot_sym = htab->dot_syms; | |
| 4231 | htab->dot_syms = eh; | |
| 4232 | } | |
| 65f38f15 AM |
4233 | } |
| 4234 | ||
| 4235 | return entry; | |
| 4236 | } | |
| 4237 | ||
| 3b421ab3 AM |
4238 | struct tocsave_entry { |
| 4239 | asection *sec; | |
| 4240 | bfd_vma offset; | |
| 4241 | }; | |
| 4242 | ||
| 4243 | static hashval_t | |
| 4244 | tocsave_htab_hash (const void *p) | |
| 4245 | { | |
| 4246 | const struct tocsave_entry *e = (const struct tocsave_entry *) p; | |
| 4247 | return ((bfd_vma)(intptr_t) e->sec ^ e->offset) >> 3; | |
| 4248 | } | |
| 4249 | ||
| 4250 | static int | |
| 4251 | tocsave_htab_eq (const void *p1, const void *p2) | |
| 4252 | { | |
| 4253 | const struct tocsave_entry *e1 = (const struct tocsave_entry *) p1; | |
| 4254 | const struct tocsave_entry *e2 = (const struct tocsave_entry *) p2; | |
| 4255 | return e1->sec == e2->sec && e1->offset == e2->offset; | |
| 4256 | } | |
| 4257 | ||
| 68faa637 AM |
4258 | /* Destroy a ppc64 ELF linker hash table. */ |
| 4259 | ||
| 4260 | static void | |
| d495ab0d | 4261 | ppc64_elf_link_hash_table_free (bfd *obfd) |
| 68faa637 | 4262 | { |
| d495ab0d | 4263 | struct ppc_link_hash_table *htab; |
| 68faa637 | 4264 | |
| d495ab0d | 4265 | htab = (struct ppc_link_hash_table *) obfd->link.hash; |
| 68faa637 AM |
4266 | if (htab->tocsave_htab) |
| 4267 | htab_delete (htab->tocsave_htab); | |
| d495ab0d AM |
4268 | bfd_hash_table_free (&htab->branch_hash_table); |
| 4269 | bfd_hash_table_free (&htab->stub_hash_table); | |
| 4270 | _bfd_elf_link_hash_table_free (obfd); | |
| 68faa637 AM |
4271 | } |
| 4272 | ||
| 65f38f15 AM |
4273 | /* Create a ppc64 ELF linker hash table. */ |
| 4274 | ||
| 4275 | static struct bfd_link_hash_table * | |
| 4ce794b7 | 4276 | ppc64_elf_link_hash_table_create (bfd *abfd) |
| 65f38f15 AM |
4277 | { |
| 4278 | struct ppc_link_hash_table *htab; | |
| 4279 | bfd_size_type amt = sizeof (struct ppc_link_hash_table); | |
| 4280 | ||
| 4ce794b7 | 4281 | htab = bfd_zmalloc (amt); |
| 65f38f15 AM |
4282 | if (htab == NULL) |
| 4283 | return NULL; | |
| 4284 | ||
| 66eb6687 | 4285 | if (!_bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc, |
| 4dfe6ac6 NC |
4286 | sizeof (struct ppc_link_hash_entry), |
| 4287 | PPC64_ELF_DATA)) | |
| 65f38f15 | 4288 | { |
| e2d34d7d | 4289 | free (htab); |
| 65f38f15 AM |
4290 | return NULL; |
| 4291 | } | |
| 4292 | ||
| 721956f4 | 4293 | /* Init the stub hash table too. */ |
| 66eb6687 AM |
4294 | if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc, |
| 4295 | sizeof (struct ppc_stub_hash_entry))) | |
| 2915c55b | 4296 | { |
| d495ab0d | 4297 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4298 | return NULL; |
| 4299 | } | |
| 721956f4 AM |
4300 | |
| 4301 | /* And the branch hash table. */ | |
| 66eb6687 AM |
4302 | if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc, |
| 4303 | sizeof (struct ppc_branch_hash_entry))) | |
| 2915c55b JK |
4304 | { |
| 4305 | bfd_hash_table_free (&htab->stub_hash_table); | |
| d495ab0d | 4306 | _bfd_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4307 | return NULL; |
| 4308 | } | |
| 721956f4 | 4309 | |
| 3b421ab3 AM |
4310 | htab->tocsave_htab = htab_try_create (1024, |
| 4311 | tocsave_htab_hash, | |
| 4312 | tocsave_htab_eq, | |
| 4313 | NULL); | |
| 4314 | if (htab->tocsave_htab == NULL) | |
| 2915c55b | 4315 | { |
| d495ab0d | 4316 | ppc64_elf_link_hash_table_free (abfd); |
| 2915c55b JK |
4317 | return NULL; |
| 4318 | } | |
| d495ab0d | 4319 | htab->elf.root.hash_table_free = ppc64_elf_link_hash_table_free; |
| 3b421ab3 | 4320 | |
| 3254fd24 AM |
4321 | /* Initializing two fields of the union is just cosmetic. We really |
| 4322 | only care about glist, but when compiled on a 32-bit host the | |
| 4323 | bfd_vma fields are larger. Setting the bfd_vma to zero makes | |
| 4324 | debugger inspection of these fields look nicer. */ | |
| a6aa5195 AM |
4325 | htab->elf.init_got_refcount.refcount = 0; |
| 4326 | htab->elf.init_got_refcount.glist = NULL; | |
| 4327 | htab->elf.init_plt_refcount.refcount = 0; | |
| 4328 | htab->elf.init_plt_refcount.glist = NULL; | |
| 4329 | htab->elf.init_got_offset.offset = 0; | |
| 4330 | htab->elf.init_got_offset.glist = NULL; | |
| 4331 | htab->elf.init_plt_offset.offset = 0; | |
| 4332 | htab->elf.init_plt_offset.glist = NULL; | |
| 3254fd24 | 4333 | |
| 65f38f15 AM |
4334 | return &htab->elf.root; |
| 4335 | } | |
| 4336 | ||
| bfeb4a28 AM |
4337 | /* Create sections for linker generated code. */ |
| 4338 | ||
| 4339 | static bfd_boolean | |
| 4340 | create_linkage_sections (bfd *dynobj, struct bfd_link_info *info) | |
| 4341 | { | |
| 4342 | struct ppc_link_hash_table *htab; | |
| 4343 | flagword flags; | |
| 4344 | ||
| 4345 | htab = ppc_hash_table (info); | |
| 4346 | ||
| bfeb4a28 AM |
4347 | flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY |
| 4348 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| b32547cd AM |
4349 | if (htab->params->save_restore_funcs) |
| 4350 | { | |
| 4351 | /* Create .sfpr for code to save and restore fp regs. */ | |
| 4352 | htab->sfpr = bfd_make_section_anyway_with_flags (dynobj, ".sfpr", | |
| 4353 | flags); | |
| 4354 | if (htab->sfpr == NULL | |
| 4355 | || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2)) | |
| 4356 | return FALSE; | |
| 4357 | } | |
| 4358 | ||
| 4359 | if (bfd_link_relocatable (info)) | |
| 4360 | return TRUE; | |
| bfeb4a28 AM |
4361 | |
| 4362 | /* Create .glink for lazy dynamic linking support. */ | |
| 4363 | htab->glink = bfd_make_section_anyway_with_flags (dynobj, ".glink", | |
| 4364 | flags); | |
| 4365 | if (htab->glink == NULL | |
| 4366 | || ! bfd_set_section_alignment (dynobj, htab->glink, 3)) | |
| 4367 | return FALSE; | |
| 4368 | ||
| 4369 | if (!info->no_ld_generated_unwind_info) | |
| 4370 | { | |
| 4371 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS | |
| 4372 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4373 | htab->glink_eh_frame = bfd_make_section_anyway_with_flags (dynobj, | |
| 4374 | ".eh_frame", | |
| 4375 | flags); | |
| 4376 | if (htab->glink_eh_frame == NULL | |
| 4377 | || !bfd_set_section_alignment (dynobj, htab->glink_eh_frame, 2)) | |
| 4378 | return FALSE; | |
| 4379 | } | |
| 4380 | ||
| 4381 | flags = SEC_ALLOC | SEC_LINKER_CREATED; | |
| 33e44f2e AM |
4382 | htab->elf.iplt = bfd_make_section_anyway_with_flags (dynobj, ".iplt", flags); |
| 4383 | if (htab->elf.iplt == NULL | |
| 4384 | || ! bfd_set_section_alignment (dynobj, htab->elf.iplt, 3)) | |
| bfeb4a28 AM |
4385 | return FALSE; |
| 4386 | ||
| 4387 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4388 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 33e44f2e AM |
4389 | htab->elf.irelplt |
| 4390 | = bfd_make_section_anyway_with_flags (dynobj, ".rela.iplt", flags); | |
| 4391 | if (htab->elf.irelplt == NULL | |
| 4392 | || ! bfd_set_section_alignment (dynobj, htab->elf.irelplt, 3)) | |
| bfeb4a28 AM |
4393 | return FALSE; |
| 4394 | ||
| 4395 | /* Create branch lookup table for plt_branch stubs. */ | |
| 4396 | flags = (SEC_ALLOC | SEC_LOAD | |
| 4397 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4398 | htab->brlt = bfd_make_section_anyway_with_flags (dynobj, ".branch_lt", | |
| 4399 | flags); | |
| 4400 | if (htab->brlt == NULL | |
| 4401 | || ! bfd_set_section_alignment (dynobj, htab->brlt, 3)) | |
| 4402 | return FALSE; | |
| 4403 | ||
| 0e1862bb | 4404 | if (!bfd_link_pic (info)) |
| bfeb4a28 AM |
4405 | return TRUE; |
| 4406 | ||
| 4407 | flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | |
| 4408 | | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED); | |
| 4409 | htab->relbrlt = bfd_make_section_anyway_with_flags (dynobj, | |
| 4410 | ".rela.branch_lt", | |
| 4411 | flags); | |
| 4412 | if (htab->relbrlt == NULL | |
| 4413 | || ! bfd_set_section_alignment (dynobj, htab->relbrlt, 3)) | |
| 4414 | return FALSE; | |
| 4415 | ||
| 4416 | return TRUE; | |
| 4417 | } | |
| 4418 | ||
| e717da7e AM |
4419 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ |
| 4420 | ||
| bfeb4a28 | 4421 | bfd_boolean |
| e7d1c40c AM |
4422 | ppc64_elf_init_stub_bfd (struct bfd_link_info *info, |
| 4423 | struct ppc64_elf_params *params) | |
| e717da7e AM |
4424 | { |
| 4425 | struct ppc_link_hash_table *htab; | |
| 4426 | ||
| e7d1c40c | 4427 | elf_elfheader (params->stub_bfd)->e_ident[EI_CLASS] = ELFCLASS64; |
| e717da7e AM |
4428 | |
| 4429 | /* Always hook our dynamic sections into the first bfd, which is the | |
| 4430 | linker created stub bfd. This ensures that the GOT header is at | |
| 4431 | the start of the output TOC section. */ | |
| 4432 | htab = ppc_hash_table (info); | |
| e7d1c40c AM |
4433 | htab->elf.dynobj = params->stub_bfd; |
| 4434 | htab->params = params; | |
| bfeb4a28 | 4435 | |
| bfeb4a28 | 4436 | return create_linkage_sections (htab->elf.dynobj, info); |
| e717da7e AM |
4437 | } |
| 4438 | ||
| 721956f4 AM |
4439 | /* Build a name for an entry in the stub hash table. */ |
| 4440 | ||
| 4441 | static char * | |
| 4ce794b7 AM |
4442 | ppc_stub_name (const asection *input_section, |
| 4443 | const asection *sym_sec, | |
| 4444 | const struct ppc_link_hash_entry *h, | |
| 4445 | const Elf_Internal_Rela *rel) | |
| 721956f4 AM |
4446 | { |
| 4447 | char *stub_name; | |
| bcaa2f82 | 4448 | ssize_t len; |
| 721956f4 AM |
4449 | |
| 4450 | /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31 | |
| 4451 | offsets from a sym as a branch target? In fact, we could | |
| 4452 | probably assume the addend is always zero. */ | |
| 4453 | BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend); | |
| 4454 | ||
| 4455 | if (h) | |
| 4456 | { | |
| 4457 | len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1; | |
| 4458 | stub_name = bfd_malloc (len); | |
| 46de2a7c AM |
4459 | if (stub_name == NULL) |
| 4460 | return stub_name; | |
| 4461 | ||
| bcaa2f82 AM |
4462 | len = sprintf (stub_name, "%08x.%s+%x", |
| 4463 | input_section->id & 0xffffffff, | |
| 4464 | h->elf.root.root.string, | |
| 4465 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 AM |
4466 | } |
| 4467 | else | |
| 4468 | { | |
| ad8e1ba5 | 4469 | len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; |
| 721956f4 | 4470 | stub_name = bfd_malloc (len); |
| 46de2a7c AM |
4471 | if (stub_name == NULL) |
| 4472 | return stub_name; | |
| 4473 | ||
| bcaa2f82 AM |
4474 | len = sprintf (stub_name, "%08x.%x:%x+%x", |
| 4475 | input_section->id & 0xffffffff, | |
| 4476 | sym_sec->id & 0xffffffff, | |
| 4477 | (int) ELF64_R_SYM (rel->r_info) & 0xffffffff, | |
| 4478 | (int) rel->r_addend & 0xffffffff); | |
| 721956f4 | 4479 | } |
| bcaa2f82 | 4480 | if (len > 2 && stub_name[len - 2] == '+' && stub_name[len - 1] == '0') |
| ee75fd95 | 4481 | stub_name[len - 2] = 0; |
| 721956f4 AM |
4482 | return stub_name; |
| 4483 | } | |
| 4484 | ||
| 4485 | /* Look up an entry in the stub hash. Stub entries are cached because | |
| 4486 | creating the stub name takes a bit of time. */ | |
| 4487 | ||
| 4488 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4489 | ppc_get_stub_entry (const asection *input_section, |
| 4490 | const asection *sym_sec, | |
| 039b3fef | 4491 | struct ppc_link_hash_entry *h, |
| 4ce794b7 AM |
4492 | const Elf_Internal_Rela *rel, |
| 4493 | struct ppc_link_hash_table *htab) | |
| 721956f4 AM |
4494 | { |
| 4495 | struct ppc_stub_hash_entry *stub_entry; | |
| 6f20ed8a | 4496 | struct map_stub *group; |
| 721956f4 AM |
4497 | |
| 4498 | /* If this input section is part of a group of sections sharing one | |
| 4499 | stub section, then use the id of the first section in the group. | |
| 4500 | Stub names need to include a section id, as there may well be | |
| 4501 | more than one stub used to reach say, printf, and we need to | |
| 4502 | distinguish between them. */ | |
| 6f20ed8a | 4503 | group = htab->sec_info[input_section->id].u.group; |
| 721956f4 | 4504 | |
| b3fac117 AM |
4505 | if (h != NULL && h->u.stub_cache != NULL |
| 4506 | && h->u.stub_cache->h == h | |
| 6f20ed8a | 4507 | && h->u.stub_cache->group == group) |
| 721956f4 | 4508 | { |
| b3fac117 | 4509 | stub_entry = h->u.stub_cache; |
| 721956f4 AM |
4510 | } |
| 4511 | else | |
| 4512 | { | |
| 4513 | char *stub_name; | |
| 4514 | ||
| 6f20ed8a | 4515 | stub_name = ppc_stub_name (group->link_sec, sym_sec, h, rel); |
| 721956f4 AM |
4516 | if (stub_name == NULL) |
| 4517 | return NULL; | |
| 4518 | ||
| 4519 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 4520 | stub_name, FALSE, FALSE); |
| 721956f4 | 4521 | if (h != NULL) |
| b3fac117 | 4522 | h->u.stub_cache = stub_entry; |
| 721956f4 AM |
4523 | |
| 4524 | free (stub_name); | |
| 4525 | } | |
| 4526 | ||
| 4527 | return stub_entry; | |
| 4528 | } | |
| 4529 | ||
| 4530 | /* Add a new stub entry to the stub hash. Not all fields of the new | |
| 4531 | stub entry are initialised. */ | |
| 4532 | ||
| 4533 | static struct ppc_stub_hash_entry * | |
| 4ce794b7 AM |
4534 | ppc_add_stub (const char *stub_name, |
| 4535 | asection *section, | |
| 25f53a85 | 4536 | struct bfd_link_info *info) |
| 721956f4 | 4537 | { |
| 25f53a85 | 4538 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 6f20ed8a | 4539 | struct map_stub *group; |
| 721956f4 AM |
4540 | asection *link_sec; |
| 4541 | asection *stub_sec; | |
| 4542 | struct ppc_stub_hash_entry *stub_entry; | |
| 4543 | ||
| 6f20ed8a AM |
4544 | group = htab->sec_info[section->id].u.group; |
| 4545 | link_sec = group->link_sec; | |
| 4546 | stub_sec = group->stub_sec; | |
| 721956f4 AM |
4547 | if (stub_sec == NULL) |
| 4548 | { | |
| 6f20ed8a AM |
4549 | size_t namelen; |
| 4550 | bfd_size_type len; | |
| 4551 | char *s_name; | |
| 721956f4 | 4552 | |
| 6f20ed8a AM |
4553 | namelen = strlen (link_sec->name); |
| 4554 | len = namelen + sizeof (STUB_SUFFIX); | |
| 4555 | s_name = bfd_alloc (htab->params->stub_bfd, len); | |
| 4556 | if (s_name == NULL) | |
| 4557 | return NULL; | |
| 721956f4 | 4558 | |
| 6f20ed8a AM |
4559 | memcpy (s_name, link_sec->name, namelen); |
| 4560 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
| 4561 | stub_sec = (*htab->params->add_stub_section) (s_name, link_sec); | |
| 4562 | if (stub_sec == NULL) | |
| 4563 | return NULL; | |
| 4564 | group->stub_sec = stub_sec; | |
| 721956f4 AM |
4565 | } |
| 4566 | ||
| 4567 | /* Enter this entry into the linker stub hash table. */ | |
| 4568 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
| b34976b6 | 4569 | TRUE, FALSE); |
| 721956f4 AM |
4570 | if (stub_entry == NULL) |
| 4571 | { | |
| 8de848d8 | 4572 | info->callbacks->einfo (_("%P: %B: cannot create stub entry %s\n"), |
| 25f53a85 | 4573 | section->owner, stub_name); |
| 721956f4 AM |
4574 | return NULL; |
| 4575 | } | |
| 4576 | ||
| 6f20ed8a | 4577 | stub_entry->group = group; |
| 721956f4 | 4578 | stub_entry->stub_offset = 0; |
| 721956f4 AM |
4579 | return stub_entry; |
| 4580 | } | |
| 4581 | ||
| e717da7e AM |
4582 | /* Create .got and .rela.got sections in ABFD, and .got in dynobj if |
| 4583 | not already done. */ | |
| 65f38f15 | 4584 | |
| b34976b6 | 4585 | static bfd_boolean |
| e717da7e | 4586 | create_got_section (bfd *abfd, struct bfd_link_info *info) |
| 65f38f15 | 4587 | { |
| e717da7e AM |
4588 | asection *got, *relgot; |
| 4589 | flagword flags; | |
| 4590 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 65f38f15 | 4591 | |
| 0c8d6e5c | 4592 | if (!is_ppc64_elf (abfd)) |
| 0ffa91dd | 4593 | return FALSE; |
| 4dfe6ac6 NC |
4594 | if (htab == NULL) |
| 4595 | return FALSE; | |
| 0ffa91dd | 4596 | |
| 33e44f2e AM |
4597 | if (!htab->elf.sgot |
| 4598 | && !_bfd_elf_create_got_section (htab->elf.dynobj, info)) | |
| 4599 | return FALSE; | |
| e717da7e AM |
4600 | |
| 4601 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
| 4602 | | SEC_LINKER_CREATED); | |
| 4603 | ||
| c456f082 | 4604 | got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); |
| e717da7e | 4605 | if (!got |
| e717da7e AM |
4606 | || !bfd_set_section_alignment (abfd, got, 3)) |
| 4607 | return FALSE; | |
| 65f38f15 | 4608 | |
| c456f082 AM |
4609 | relgot = bfd_make_section_anyway_with_flags (abfd, ".rela.got", |
| 4610 | flags | SEC_READONLY); | |
| e717da7e | 4611 | if (!relgot |
| e717da7e | 4612 | || ! bfd_set_section_alignment (abfd, relgot, 3)) |
| b34976b6 | 4613 | return FALSE; |
| e717da7e AM |
4614 | |
| 4615 | ppc64_elf_tdata (abfd)->got = got; | |
| 4616 | ppc64_elf_tdata (abfd)->relgot = relgot; | |
| b34976b6 | 4617 | return TRUE; |
| 65f38f15 | 4618 | } |
| 5bd4f169 | 4619 | |
| 82bd7b59 | 4620 | /* Create the dynamic sections, and set up shortcuts. */ |
| 5bd4f169 | 4621 | |
| b34976b6 | 4622 | static bfd_boolean |
| 4ce794b7 | 4623 | ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) |
| 5bd4f169 | 4624 | { |
| 65f38f15 | 4625 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 4626 | |
| 65f38f15 | 4627 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) |
| b34976b6 | 4628 | return FALSE; |
| 65f38f15 | 4629 | |
| e717da7e | 4630 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
4631 | if (htab == NULL) |
| 4632 | return FALSE; | |
| 4633 | ||
| 3d4d4302 | 4634 | htab->dynbss = bfd_get_linker_section (dynobj, ".dynbss"); |
| 0e1862bb | 4635 | if (!bfd_link_pic (info)) |
| 3d4d4302 | 4636 | htab->relbss = bfd_get_linker_section (dynobj, ".rela.bss"); |
| 65f38f15 | 4637 | |
| 33e44f2e | 4638 | if (!htab->elf.sgot || !htab->elf.splt || !htab->elf.srelplt || !htab->dynbss |
| 0e1862bb | 4639 | || (!bfd_link_pic (info) && !htab->relbss)) |
| 65f38f15 AM |
4640 | abort (); |
| 4641 | ||
| b34976b6 | 4642 | return TRUE; |
| 5bd4f169 AM |
4643 | } |
| 4644 | ||
| b31867b6 AM |
4645 | /* Follow indirect and warning symbol links. */ |
| 4646 | ||
| 4647 | static inline struct bfd_link_hash_entry * | |
| 4648 | follow_link (struct bfd_link_hash_entry *h) | |
| 4649 | { | |
| 4650 | while (h->type == bfd_link_hash_indirect | |
| 4651 | || h->type == bfd_link_hash_warning) | |
| 4652 | h = h->u.i.link; | |
| 4653 | return h; | |
| 4654 | } | |
| 4655 | ||
| 4656 | static inline struct elf_link_hash_entry * | |
| 4657 | elf_follow_link (struct elf_link_hash_entry *h) | |
| 4658 | { | |
| 4659 | return (struct elf_link_hash_entry *) follow_link (&h->root); | |
| 4660 | } | |
| 4661 | ||
| 4662 | static inline struct ppc_link_hash_entry * | |
| 4663 | ppc_follow_link (struct ppc_link_hash_entry *h) | |
| 4664 | { | |
| 4665 | return (struct ppc_link_hash_entry *) follow_link (&h->elf.root); | |
| 4666 | } | |
| 4667 | ||
| 40d16e0b AM |
4668 | /* Merge PLT info on FROM with that on TO. */ |
| 4669 | ||
| 4670 | static void | |
| 4671 | move_plt_plist (struct ppc_link_hash_entry *from, | |
| 4672 | struct ppc_link_hash_entry *to) | |
| 4673 | { | |
| 4674 | if (from->elf.plt.plist != NULL) | |
| 4675 | { | |
| 4676 | if (to->elf.plt.plist != NULL) | |
| 4677 | { | |
| 4678 | struct plt_entry **entp; | |
| 4679 | struct plt_entry *ent; | |
| 4680 | ||
| 4681 | for (entp = &from->elf.plt.plist; (ent = *entp) != NULL; ) | |
| 4682 | { | |
| 4683 | struct plt_entry *dent; | |
| 4684 | ||
| 4685 | for (dent = to->elf.plt.plist; dent != NULL; dent = dent->next) | |
| 4686 | if (dent->addend == ent->addend) | |
| 4687 | { | |
| 4688 | dent->plt.refcount += ent->plt.refcount; | |
| 4689 | *entp = ent->next; | |
| 4690 | break; | |
| 4691 | } | |
| 4692 | if (dent == NULL) | |
| 4693 | entp = &ent->next; | |
| 4694 | } | |
| 4695 | *entp = to->elf.plt.plist; | |
| 4696 | } | |
| 4697 | ||
| 4698 | to->elf.plt.plist = from->elf.plt.plist; | |
| 4699 | from->elf.plt.plist = NULL; | |
| 4700 | } | |
| 4701 | } | |
| 4702 | ||
| 65f38f15 AM |
4703 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 4704 | ||
| 4705 | static void | |
| fcfa13d2 AM |
4706 | ppc64_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 4707 | struct elf_link_hash_entry *dir, | |
| 4708 | struct elf_link_hash_entry *ind) | |
| 65f38f15 AM |
4709 | { |
| 4710 | struct ppc_link_hash_entry *edir, *eind; | |
| 4711 | ||
| 4712 | edir = (struct ppc_link_hash_entry *) dir; | |
| 4713 | eind = (struct ppc_link_hash_entry *) ind; | |
| 4714 | ||
| c79d6685 AM |
4715 | edir->is_func |= eind->is_func; |
| 4716 | edir->is_func_descriptor |= eind->is_func_descriptor; | |
| 4717 | edir->tls_mask |= eind->tls_mask; | |
| 4718 | if (eind->oh != NULL) | |
| 4719 | edir->oh = ppc_follow_link (eind->oh); | |
| 4720 | ||
| 4721 | /* If called to transfer flags for a weakdef during processing | |
| 4722 | of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF. | |
| 4723 | We clear it ourselves for ELIMINATE_COPY_RELOCS. */ | |
| 4724 | if (!(ELIMINATE_COPY_RELOCS | |
| 4725 | && eind->elf.root.type != bfd_link_hash_indirect | |
| 4726 | && edir->elf.dynamic_adjusted)) | |
| 4727 | edir->elf.non_got_ref |= eind->elf.non_got_ref; | |
| 4728 | ||
| 4729 | edir->elf.ref_dynamic |= eind->elf.ref_dynamic; | |
| 4730 | edir->elf.ref_regular |= eind->elf.ref_regular; | |
| 4731 | edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak; | |
| 4732 | edir->elf.needs_plt |= eind->elf.needs_plt; | |
| a345bc8d | 4733 | edir->elf.pointer_equality_needed |= eind->elf.pointer_equality_needed; |
| c79d6685 | 4734 | |
| 411e1bfb | 4735 | /* Copy over any dynamic relocs we may have on the indirect sym. */ |
| bbd7ec4a | 4736 | if (eind->dyn_relocs != NULL) |
| 65f38f15 | 4737 | { |
| bbd7ec4a AM |
4738 | if (edir->dyn_relocs != NULL) |
| 4739 | { | |
| 6061a67d AM |
4740 | struct elf_dyn_relocs **pp; |
| 4741 | struct elf_dyn_relocs *p; | |
| bbd7ec4a | 4742 | |
| fcfa13d2 | 4743 | /* Add reloc counts against the indirect sym to the direct sym |
| bbd7ec4a AM |
4744 | list. Merge any entries against the same section. */ |
| 4745 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL; ) | |
| 4746 | { | |
| 6061a67d | 4747 | struct elf_dyn_relocs *q; |
| bbd7ec4a AM |
4748 | |
| 4749 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
| 4750 | if (q->sec == p->sec) | |
| 4751 | { | |
| 4752 | q->pc_count += p->pc_count; | |
| 4753 | q->count += p->count; | |
| 4754 | *pp = p->next; | |
| 4755 | break; | |
| 4756 | } | |
| 4757 | if (q == NULL) | |
| 4758 | pp = &p->next; | |
| 4759 | } | |
| 4760 | *pp = edir->dyn_relocs; | |
| 4761 | } | |
| 4762 | ||
| 65f38f15 AM |
4763 | edir->dyn_relocs = eind->dyn_relocs; |
| 4764 | eind->dyn_relocs = NULL; | |
| 4765 | } | |
| 65f38f15 | 4766 | |
| 68ba6d40 AM |
4767 | /* If we were called to copy over info for a weak sym, that's all. |
| 4768 | You might think dyn_relocs need not be copied over; After all, | |
| 4769 | both syms will be dynamic or both non-dynamic so we're just | |
| 68ffbac6 | 4770 | moving reloc accounting around. However, ELIMINATE_COPY_RELOCS |
| 68ba6d40 AM |
4771 | code in ppc64_elf_adjust_dynamic_symbol needs to check for |
| 4772 | dyn_relocs in read-only sections, and it does so on what is the | |
| 4773 | DIR sym here. */ | |
| 4774 | if (eind->elf.root.type != bfd_link_hash_indirect) | |
| 4775 | return; | |
| 4776 | ||
| 81848ca0 AM |
4777 | /* Copy over got entries that we may have already seen to the |
| 4778 | symbol which just became indirect. */ | |
| 411e1bfb AM |
4779 | if (eind->elf.got.glist != NULL) |
| 4780 | { | |
| 4781 | if (edir->elf.got.glist != NULL) | |
| 4782 | { | |
| 4783 | struct got_entry **entp; | |
| 4784 | struct got_entry *ent; | |
| 4785 | ||
| 4786 | for (entp = &eind->elf.got.glist; (ent = *entp) != NULL; ) | |
| 4787 | { | |
| 4788 | struct got_entry *dent; | |
| 4789 | ||
| 4790 | for (dent = edir->elf.got.glist; dent != NULL; dent = dent->next) | |
| 4791 | if (dent->addend == ent->addend | |
| e717da7e | 4792 | && dent->owner == ent->owner |
| 411e1bfb AM |
4793 | && dent->tls_type == ent->tls_type) |
| 4794 | { | |
| 4795 | dent->got.refcount += ent->got.refcount; | |
| 4796 | *entp = ent->next; | |
| 4797 | break; | |
| 4798 | } | |
| 4799 | if (dent == NULL) | |
| 4800 | entp = &ent->next; | |
| 4801 | } | |
| 4802 | *entp = edir->elf.got.glist; | |
| 4803 | } | |
| 4804 | ||
| 4805 | edir->elf.got.glist = eind->elf.got.glist; | |
| 4806 | eind->elf.got.glist = NULL; | |
| 4807 | } | |
| 4808 | ||
| 4809 | /* And plt entries. */ | |
| 40d16e0b | 4810 | move_plt_plist (eind, edir); |
| 411e1bfb | 4811 | |
| fcfa13d2 | 4812 | if (eind->elf.dynindx != -1) |
| 411e1bfb | 4813 | { |
| fcfa13d2 AM |
4814 | if (edir->elf.dynindx != -1) |
| 4815 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 4816 | edir->elf.dynstr_index); | |
| 411e1bfb AM |
4817 | edir->elf.dynindx = eind->elf.dynindx; |
| 4818 | edir->elf.dynstr_index = eind->elf.dynstr_index; | |
| 4819 | eind->elf.dynindx = -1; | |
| 4820 | eind->elf.dynstr_index = 0; | |
| 4821 | } | |
| 411e1bfb AM |
4822 | } |
| 4823 | ||
| 8387904d AM |
4824 | /* Find the function descriptor hash entry from the given function code |
| 4825 | hash entry FH. Link the entries via their OH fields. */ | |
| 4826 | ||
| 4827 | static struct ppc_link_hash_entry * | |
| b31867b6 | 4828 | lookup_fdh (struct ppc_link_hash_entry *fh, struct ppc_link_hash_table *htab) |
| 8387904d AM |
4829 | { |
| 4830 | struct ppc_link_hash_entry *fdh = fh->oh; | |
| 4831 | ||
| 4832 | if (fdh == NULL) | |
| 4833 | { | |
| 4834 | const char *fd_name = fh->elf.root.root.string + 1; | |
| 4835 | ||
| 4836 | fdh = (struct ppc_link_hash_entry *) | |
| 4837 | elf_link_hash_lookup (&htab->elf, fd_name, FALSE, FALSE, FALSE); | |
| b31867b6 AM |
4838 | if (fdh == NULL) |
| 4839 | return fdh; | |
| 4840 | ||
| 4841 | fdh->is_func_descriptor = 1; | |
| 4842 | fdh->oh = fh; | |
| 4843 | fh->is_func = 1; | |
| 4844 | fh->oh = fdh; | |
| 8387904d AM |
4845 | } |
| 4846 | ||
| b31867b6 | 4847 | return ppc_follow_link (fdh); |
| 8387904d AM |
4848 | } |
| 4849 | ||
| bb700d78 AM |
4850 | /* Make a fake function descriptor sym for the code sym FH. */ |
| 4851 | ||
| 4852 | static struct ppc_link_hash_entry * | |
| 4853 | make_fdh (struct bfd_link_info *info, | |
| 908b32fc | 4854 | struct ppc_link_hash_entry *fh) |
| bb700d78 AM |
4855 | { |
| 4856 | bfd *abfd; | |
| 4857 | asymbol *newsym; | |
| 4858 | struct bfd_link_hash_entry *bh; | |
| 4859 | struct ppc_link_hash_entry *fdh; | |
| 4860 | ||
| 4861 | abfd = fh->elf.root.u.undef.abfd; | |
| 4862 | newsym = bfd_make_empty_symbol (abfd); | |
| 4863 | newsym->name = fh->elf.root.root.string + 1; | |
| 4864 | newsym->section = bfd_und_section_ptr; | |
| 4865 | newsym->value = 0; | |
| 908b32fc | 4866 | newsym->flags = BSF_WEAK; |
| bb700d78 AM |
4867 | |
| 4868 | bh = NULL; | |
| 4869 | if (!_bfd_generic_link_add_one_symbol (info, abfd, newsym->name, | |
| 4870 | newsym->flags, newsym->section, | |
| 4871 | newsym->value, NULL, FALSE, FALSE, | |
| 4872 | &bh)) | |
| 4873 | return NULL; | |
| 4874 | ||
| 4875 | fdh = (struct ppc_link_hash_entry *) bh; | |
| 4876 | fdh->elf.non_elf = 0; | |
| 908b32fc AM |
4877 | fdh->fake = 1; |
| 4878 | fdh->is_func_descriptor = 1; | |
| 4879 | fdh->oh = fh; | |
| 4880 | fh->is_func = 1; | |
| 4881 | fh->oh = fdh; | |
| bb700d78 AM |
4882 | return fdh; |
| 4883 | } | |
| 4884 | ||
| 8387904d AM |
4885 | /* Fix function descriptor symbols defined in .opd sections to be |
| 4886 | function type. */ | |
| 555cd476 AM |
4887 | |
| 4888 | static bfd_boolean | |
| c16153ae | 4889 | ppc64_elf_add_symbol_hook (bfd *ibfd, |
| e054468f | 4890 | struct bfd_link_info *info, |
| 555cd476 | 4891 | Elf_Internal_Sym *isym, |
| 6911b7dc | 4892 | const char **name, |
| 555cd476 AM |
4893 | flagword *flags ATTRIBUTE_UNUSED, |
| 4894 | asection **sec, | |
| b53dfeb2 | 4895 | bfd_vma *value) |
| 555cd476 | 4896 | { |
| f1885d1e AM |
4897 | if ((ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC |
| 4898 | || ELF_ST_BIND (isym->st_info) == STB_GNU_UNIQUE) | |
| 4899 | && (ibfd->flags & DYNAMIC) == 0 | |
| 4900 | && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour) | |
| 13a2df29 | 4901 | elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any; |
| f64b2e8d | 4902 | |
| b53dfeb2 | 4903 | if (*sec != NULL |
| f1885d1e | 4904 | && strcmp ((*sec)->name, ".opd") == 0) |
| b53dfeb2 AM |
4905 | { |
| 4906 | asection *code_sec; | |
| 4907 | ||
| 4908 | if (!(ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC | |
| 4909 | || ELF_ST_TYPE (isym->st_info) == STT_FUNC)) | |
| 4910 | isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC); | |
| 4911 | ||
| 4912 | /* If the symbol is a function defined in .opd, and the function | |
| 4913 | code is in a discarded group, let it appear to be undefined. */ | |
| 0e1862bb | 4914 | if (!bfd_link_relocatable (info) |
| b53dfeb2 AM |
4915 | && (*sec)->reloc_count != 0 |
| 4916 | && opd_entry_value (*sec, *value, &code_sec, NULL, | |
| 4917 | FALSE) != (bfd_vma) -1 | |
| 4918 | && discarded_section (code_sec)) | |
| 4919 | { | |
| 4920 | *sec = bfd_und_section_ptr; | |
| 4921 | isym->st_shndx = SHN_UNDEF; | |
| 4922 | } | |
| 4923 | } | |
| dbd1e97e AM |
4924 | else if (*sec != NULL |
| 4925 | && strcmp ((*sec)->name, ".toc") == 0 | |
| 4926 | && ELF_ST_TYPE (isym->st_info) == STT_OBJECT) | |
| 4927 | { | |
| 4928 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4929 | if (htab != NULL) | |
| 4930 | htab->params->object_in_toc = 1; | |
| 4931 | } | |
| 433817dd | 4932 | |
| 6911b7dc AM |
4933 | if ((STO_PPC64_LOCAL_MASK & isym->st_other) != 0) |
| 4934 | { | |
| 4935 | if (abiversion (ibfd) == 0) | |
| 4936 | set_abiversion (ibfd, 2); | |
| 4937 | else if (abiversion (ibfd) == 1) | |
| 4938 | { | |
| 4939 | info->callbacks->einfo (_("%P: symbol '%s' has invalid st_other" | |
| 4940 | " for ABI version 1\n"), name); | |
| 4941 | bfd_set_error (bfd_error_bad_value); | |
| 4942 | return FALSE; | |
| 4943 | } | |
| 4944 | } | |
| 4945 | ||
| 555cd476 AM |
4946 | return TRUE; |
| 4947 | } | |
| 4948 | ||
| 6911b7dc AM |
4949 | /* Merge non-visibility st_other attributes: local entry point. */ |
| 4950 | ||
| 4951 | static void | |
| 4952 | ppc64_elf_merge_symbol_attribute (struct elf_link_hash_entry *h, | |
| 4953 | const Elf_Internal_Sym *isym, | |
| 4954 | bfd_boolean definition, | |
| 4955 | bfd_boolean dynamic) | |
| 4956 | { | |
| 4957 | if (definition && !dynamic) | |
| 4958 | h->other = ((isym->st_other & ~ELF_ST_VISIBILITY (-1)) | |
| 4959 | | ELF_ST_VISIBILITY (h->other)); | |
| 4960 | } | |
| 4961 | ||
| 8387904d | 4962 | /* This function makes an old ABI object reference to ".bar" cause the |
| 908b32fc AM |
4963 | inclusion of a new ABI object archive that defines "bar". |
| 4964 | NAME is a symbol defined in an archive. Return a symbol in the hash | |
| 4965 | table that might be satisfied by the archive symbols. */ | |
| 8387904d AM |
4966 | |
| 4967 | static struct elf_link_hash_entry * | |
| 4968 | ppc64_elf_archive_symbol_lookup (bfd *abfd, | |
| 4969 | struct bfd_link_info *info, | |
| 4970 | const char *name) | |
| 4971 | { | |
| 4972 | struct elf_link_hash_entry *h; | |
| 4973 | char *dot_name; | |
| 4974 | size_t len; | |
| 4975 | ||
| 4976 | h = _bfd_elf_archive_symbol_lookup (abfd, info, name); | |
| 908b32fc AM |
4977 | if (h != NULL |
| 4978 | /* Don't return this sym if it is a fake function descriptor | |
| 4979 | created by add_symbol_adjust. */ | |
| 4980 | && !(h->root.type == bfd_link_hash_undefweak | |
| 4981 | && ((struct ppc_link_hash_entry *) h)->fake)) | |
| 8387904d AM |
4982 | return h; |
| 4983 | ||
| 4984 | if (name[0] == '.') | |
| 4985 | return h; | |
| 4986 | ||
| 4987 | len = strlen (name); | |
| 4988 | dot_name = bfd_alloc (abfd, len + 2); | |
| 4989 | if (dot_name == NULL) | |
| 4990 | return (struct elf_link_hash_entry *) 0 - 1; | |
| 4991 | dot_name[0] = '.'; | |
| 4992 | memcpy (dot_name + 1, name, len + 1); | |
| 4993 | h = _bfd_elf_archive_symbol_lookup (abfd, info, dot_name); | |
| 4994 | bfd_release (abfd, dot_name); | |
| 4995 | return h; | |
| 4996 | } | |
| 4997 | ||
| 4998 | /* This function satisfies all old ABI object references to ".bar" if a | |
| 99877b66 AM |
4999 | new ABI object defines "bar". Well, at least, undefined dot symbols |
| 5000 | are made weak. This stops later archive searches from including an | |
| 5001 | object if we already have a function descriptor definition. It also | |
| 35b0ce59 AM |
5002 | prevents the linker complaining about undefined symbols. |
| 5003 | We also check and correct mismatched symbol visibility here. The | |
| 5004 | most restrictive visibility of the function descriptor and the | |
| 5005 | function entry symbol is used. */ | |
| 8387904d AM |
5006 | |
| 5007 | static bfd_boolean | |
| b3fac117 | 5008 | add_symbol_adjust (struct ppc_link_hash_entry *eh, struct bfd_link_info *info) |
| 8387904d | 5009 | { |
| 8387904d AM |
5010 | struct ppc_link_hash_table *htab; |
| 5011 | struct ppc_link_hash_entry *fdh; | |
| 5012 | ||
| b3fac117 | 5013 | if (eh->elf.root.type == bfd_link_hash_indirect) |
| 8387904d AM |
5014 | return TRUE; |
| 5015 | ||
| b3fac117 AM |
5016 | if (eh->elf.root.type == bfd_link_hash_warning) |
| 5017 | eh = (struct ppc_link_hash_entry *) eh->elf.root.u.i.link; | |
| 8387904d | 5018 | |
| b3fac117 AM |
5019 | if (eh->elf.root.root.string[0] != '.') |
| 5020 | abort (); | |
| 8387904d | 5021 | |
| b3fac117 | 5022 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5023 | if (htab == NULL) |
| 5024 | return FALSE; | |
| 5025 | ||
| b31867b6 AM |
5026 | fdh = lookup_fdh (eh, htab); |
| 5027 | if (fdh == NULL) | |
| 5028 | { | |
| 0e1862bb | 5029 | if (!bfd_link_relocatable (info) |
| b31867b6 AM |
5030 | && (eh->elf.root.type == bfd_link_hash_undefined |
| 5031 | || eh->elf.root.type == bfd_link_hash_undefweak) | |
| 5032 | && eh->elf.ref_regular) | |
| 5033 | { | |
| 5034 | /* Make an undefweak function descriptor sym, which is enough to | |
| 5035 | pull in an --as-needed shared lib, but won't cause link | |
| 5036 | errors. Archives are handled elsewhere. */ | |
| 5037 | fdh = make_fdh (info, eh); | |
| 5038 | if (fdh == NULL) | |
| 5039 | return FALSE; | |
| 5040 | fdh->elf.ref_regular = 1; | |
| 5041 | } | |
| bb700d78 | 5042 | } |
| b31867b6 | 5043 | else |
| 8387904d | 5044 | { |
| 35b0ce59 AM |
5045 | unsigned entry_vis = ELF_ST_VISIBILITY (eh->elf.other) - 1; |
| 5046 | unsigned descr_vis = ELF_ST_VISIBILITY (fdh->elf.other) - 1; | |
| 5047 | if (entry_vis < descr_vis) | |
| 5048 | fdh->elf.other += entry_vis - descr_vis; | |
| 5049 | else if (entry_vis > descr_vis) | |
| 5050 | eh->elf.other += descr_vis - entry_vis; | |
| 5051 | ||
| e87d886e AM |
5052 | if ((fdh->elf.root.type == bfd_link_hash_defined |
| 5053 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 5054 | && eh->elf.root.type == bfd_link_hash_undefined) | |
| 35b0ce59 AM |
5055 | { |
| 5056 | eh->elf.root.type = bfd_link_hash_undefweak; | |
| 5057 | eh->was_undefined = 1; | |
| 5058 | htab->twiddled_syms = 1; | |
| 5059 | } | |
| 8387904d | 5060 | } |
| 99877b66 | 5061 | |
| 8387904d AM |
5062 | return TRUE; |
| 5063 | } | |
| 5064 | ||
| f6c7c3e8 AM |
5065 | /* Set up opd section info and abiversion for IBFD, and process list |
| 5066 | of dot-symbols we made in link_hash_newfunc. */ | |
| b3fac117 | 5067 | |
| 8387904d | 5068 | static bfd_boolean |
| f6c7c3e8 | 5069 | ppc64_elf_before_check_relocs (bfd *ibfd, struct bfd_link_info *info) |
| 8387904d | 5070 | { |
| 99877b66 | 5071 | struct ppc_link_hash_table *htab; |
| b3fac117 | 5072 | struct ppc_link_hash_entry **p, *eh; |
| 459609d6 | 5073 | asection *opd = bfd_get_section_by_name (ibfd, ".opd"); |
| 433817dd | 5074 | |
| 459609d6 | 5075 | if (opd != NULL && opd->size != 0) |
| b3fac117 | 5076 | { |
| 459609d6 AM |
5077 | if (abiversion (ibfd) == 0) |
| 5078 | set_abiversion (ibfd, 1); | |
| 5079 | else if (abiversion (ibfd) == 2) | |
| f6c7c3e8 | 5080 | { |
| 459609d6 AM |
5081 | info->callbacks->einfo (_("%P: %B .opd not allowed in ABI" |
| 5082 | " version %d\n"), | |
| 5083 | ibfd, abiversion (ibfd)); | |
| 5084 | bfd_set_error (bfd_error_bad_value); | |
| 5085 | return FALSE; | |
| f6c7c3e8 AM |
5086 | } |
| 5087 | ||
| 459609d6 AM |
5088 | if ((ibfd->flags & DYNAMIC) == 0 |
| 5089 | && (opd->flags & SEC_RELOC) != 0 | |
| 5090 | && opd->reloc_count != 0 | |
| 5091 | && !bfd_is_abs_section (opd->output_section)) | |
| b3fac117 | 5092 | { |
| 459609d6 AM |
5093 | /* Garbage collection needs some extra help with .opd sections. |
| 5094 | We don't want to necessarily keep everything referenced by | |
| 5095 | relocs in .opd, as that would keep all functions. Instead, | |
| 5096 | if we reference an .opd symbol (a function descriptor), we | |
| 5097 | want to keep the function code symbol's section. This is | |
| 5098 | easy for global symbols, but for local syms we need to keep | |
| 5099 | information about the associated function section. */ | |
| 5100 | bfd_size_type amt; | |
| 5101 | asection **opd_sym_map; | |
| 5102 | ||
| 51aecdc5 | 5103 | amt = OPD_NDX (opd->size) * sizeof (*opd_sym_map); |
| 459609d6 AM |
5104 | opd_sym_map = bfd_zalloc (ibfd, amt); |
| 5105 | if (opd_sym_map == NULL) | |
| b3fac117 | 5106 | return FALSE; |
| 459609d6 AM |
5107 | ppc64_elf_section_data (opd)->u.opd.func_sec = opd_sym_map; |
| 5108 | BFD_ASSERT (ppc64_elf_section_data (opd)->sec_type == sec_normal); | |
| 5109 | ppc64_elf_section_data (opd)->sec_type = sec_opd; | |
| b3fac117 AM |
5110 | } |
| 5111 | } | |
| 5112 | ||
| 459609d6 AM |
5113 | if (!is_ppc64_elf (info->output_bfd)) |
| 5114 | return TRUE; | |
| 5115 | htab = ppc_hash_table (info); | |
| 5116 | if (htab == NULL) | |
| 5117 | return FALSE; | |
| 5118 | ||
| 5119 | /* For input files without an explicit abiversion in e_flags | |
| 5120 | we should have flagged any with symbol st_other bits set | |
| 5121 | as ELFv1 and above flagged those with .opd as ELFv2. | |
| 5122 | Set the output abiversion if not yet set, and for any input | |
| 5123 | still ambiguous, take its abiversion from the output. | |
| 5124 | Differences in ABI are reported later. */ | |
| 5125 | if (abiversion (info->output_bfd) == 0) | |
| 5126 | set_abiversion (info->output_bfd, abiversion (ibfd)); | |
| 5127 | else if (abiversion (ibfd) == 0) | |
| 5128 | set_abiversion (ibfd, abiversion (info->output_bfd)); | |
| 5129 | ||
| 5130 | p = &htab->dot_syms; | |
| 5131 | while ((eh = *p) != NULL) | |
| 5132 | { | |
| 5133 | *p = NULL; | |
| 5134 | if (&eh->elf == htab->elf.hgot) | |
| 5135 | ; | |
| 5136 | else if (htab->elf.hgot == NULL | |
| 5137 | && strcmp (eh->elf.root.root.string, ".TOC.") == 0) | |
| 5138 | htab->elf.hgot = &eh->elf; | |
| 5139 | else if (!add_symbol_adjust (eh, info)) | |
| 5140 | return FALSE; | |
| 5141 | p = &eh->u.next_dot_sym; | |
| 5142 | } | |
| 5143 | ||
| b3fac117 AM |
5144 | /* Clear the list for non-ppc64 input files. */ |
| 5145 | p = &htab->dot_syms; | |
| 5146 | while ((eh = *p) != NULL) | |
| 5147 | { | |
| 5148 | *p = NULL; | |
| 5149 | p = &eh->u.next_dot_sym; | |
| 5150 | } | |
| 99877b66 AM |
5151 | |
| 5152 | /* We need to fix the undefs list for any syms we have twiddled to | |
| 5153 | undef_weak. */ | |
| 5154 | if (htab->twiddled_syms) | |
| 5155 | { | |
| 77cfaee6 | 5156 | bfd_link_repair_undef_list (&htab->elf.root); |
| 99877b66 AM |
5157 | htab->twiddled_syms = 0; |
| 5158 | } | |
| b3fac117 | 5159 | return TRUE; |
| 8387904d AM |
5160 | } |
| 5161 | ||
| 97fed1c9 JJ |
5162 | /* Undo hash table changes when an --as-needed input file is determined |
| 5163 | not to be needed. */ | |
| 5164 | ||
| 5165 | static bfd_boolean | |
| e5034e59 AM |
5166 | ppc64_elf_notice_as_needed (bfd *ibfd, |
| 5167 | struct bfd_link_info *info, | |
| 5168 | enum notice_asneeded_action act) | |
| 97fed1c9 | 5169 | { |
| e5034e59 AM |
5170 | if (act == notice_not_needed) |
| 5171 | { | |
| 5172 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 | 5173 | |
| e5034e59 AM |
5174 | if (htab == NULL) |
| 5175 | return FALSE; | |
| 4dfe6ac6 | 5176 | |
| e5034e59 AM |
5177 | htab->dot_syms = NULL; |
| 5178 | } | |
| 5179 | return _bfd_elf_notice_as_needed (ibfd, info, act); | |
| 97fed1c9 JJ |
5180 | } |
| 5181 | ||
| aa374f67 AM |
5182 | /* If --just-symbols against a final linked binary, then assume we need |
| 5183 | toc adjusting stubs when calling functions defined there. */ | |
| 5184 | ||
| 5185 | static void | |
| 5186 | ppc64_elf_link_just_syms (asection *sec, struct bfd_link_info *info) | |
| 5187 | { | |
| 5188 | if ((sec->flags & SEC_CODE) != 0 | |
| 5189 | && (sec->owner->flags & (EXEC_P | DYNAMIC)) != 0 | |
| 5190 | && is_ppc64_elf (sec->owner)) | |
| 5191 | { | |
| 2c3f079f AM |
5192 | if (abiversion (sec->owner) >= 2 |
| 5193 | || bfd_get_section_by_name (sec->owner, ".opd") != NULL) | |
| aa374f67 AM |
5194 | sec->has_toc_reloc = 1; |
| 5195 | } | |
| 5196 | _bfd_elf_link_just_syms (sec, info); | |
| 5197 | } | |
| 5198 | ||
| e054468f | 5199 | static struct plt_entry ** |
| 4ce794b7 AM |
5200 | update_local_sym_info (bfd *abfd, Elf_Internal_Shdr *symtab_hdr, |
| 5201 | unsigned long r_symndx, bfd_vma r_addend, int tls_type) | |
| 411e1bfb AM |
5202 | { |
| 5203 | struct got_entry **local_got_ents = elf_local_got_ents (abfd); | |
| e054468f | 5204 | struct plt_entry **local_plt; |
| f961d9dd | 5205 | unsigned char *local_got_tls_masks; |
| 411e1bfb AM |
5206 | |
| 5207 | if (local_got_ents == NULL) | |
| 5208 | { | |
| 5209 | bfd_size_type size = symtab_hdr->sh_info; | |
| 5210 | ||
| e054468f AM |
5211 | size *= (sizeof (*local_got_ents) |
| 5212 | + sizeof (*local_plt) | |
| 5213 | + sizeof (*local_got_tls_masks)); | |
| 4ce794b7 | 5214 | local_got_ents = bfd_zalloc (abfd, size); |
| 411e1bfb | 5215 | if (local_got_ents == NULL) |
| e054468f | 5216 | return NULL; |
| 411e1bfb AM |
5217 | elf_local_got_ents (abfd) = local_got_ents; |
| 5218 | } | |
| 5219 | ||
| e054468f | 5220 | if ((tls_type & (PLT_IFUNC | TLS_EXPLICIT)) == 0) |
| 411e1bfb AM |
5221 | { |
| 5222 | struct got_entry *ent; | |
| 5223 | ||
| 5224 | for (ent = local_got_ents[r_symndx]; ent != NULL; ent = ent->next) | |
| e717da7e AM |
5225 | if (ent->addend == r_addend |
| 5226 | && ent->owner == abfd | |
| 5227 | && ent->tls_type == tls_type) | |
| 411e1bfb AM |
5228 | break; |
| 5229 | if (ent == NULL) | |
| 5230 | { | |
| 5231 | bfd_size_type amt = sizeof (*ent); | |
| 4ce794b7 | 5232 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5233 | if (ent == NULL) |
| 5234 | return FALSE; | |
| 5235 | ent->next = local_got_ents[r_symndx]; | |
| 5236 | ent->addend = r_addend; | |
| e717da7e | 5237 | ent->owner = abfd; |
| 411e1bfb | 5238 | ent->tls_type = tls_type; |
| 927be08e | 5239 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5240 | ent->got.refcount = 0; |
| 5241 | local_got_ents[r_symndx] = ent; | |
| 5242 | } | |
| 5243 | ent->got.refcount += 1; | |
| 5244 | } | |
| 5245 | ||
| e054468f | 5246 | local_plt = (struct plt_entry **) (local_got_ents + symtab_hdr->sh_info); |
| f961d9dd | 5247 | local_got_tls_masks = (unsigned char *) (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 5248 | local_got_tls_masks[r_symndx] |= tls_type; |
| e054468f AM |
5249 | |
| 5250 | return local_plt + r_symndx; | |
| 65f38f15 AM |
5251 | } |
| 5252 | ||
| 411e1bfb | 5253 | static bfd_boolean |
| e054468f | 5254 | update_plt_info (bfd *abfd, struct plt_entry **plist, bfd_vma addend) |
| 1e2f5b6e | 5255 | { |
| 411e1bfb | 5256 | struct plt_entry *ent; |
| 1e2f5b6e | 5257 | |
| e054468f | 5258 | for (ent = *plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
5259 | if (ent->addend == addend) |
| 5260 | break; | |
| 5261 | if (ent == NULL) | |
| 1e2f5b6e | 5262 | { |
| 411e1bfb | 5263 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5264 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb AM |
5265 | if (ent == NULL) |
| 5266 | return FALSE; | |
| e054468f | 5267 | ent->next = *plist; |
| 411e1bfb AM |
5268 | ent->addend = addend; |
| 5269 | ent->plt.refcount = 0; | |
| e054468f | 5270 | *plist = ent; |
| 1e2f5b6e | 5271 | } |
| 411e1bfb | 5272 | ent->plt.refcount += 1; |
| b34976b6 | 5273 | return TRUE; |
| 1e2f5b6e AM |
5274 | } |
| 5275 | ||
| e054468f AM |
5276 | static bfd_boolean |
| 5277 | is_branch_reloc (enum elf_ppc64_reloc_type r_type) | |
| 5278 | { | |
| 5279 | return (r_type == R_PPC64_REL24 | |
| 5280 | || r_type == R_PPC64_REL14 | |
| 5281 | || r_type == R_PPC64_REL14_BRTAKEN | |
| 5282 | || r_type == R_PPC64_REL14_BRNTAKEN | |
| 5283 | || r_type == R_PPC64_ADDR24 | |
| 5284 | || r_type == R_PPC64_ADDR14 | |
| 5285 | || r_type == R_PPC64_ADDR14_BRTAKEN | |
| 5286 | || r_type == R_PPC64_ADDR14_BRNTAKEN); | |
| 5287 | } | |
| 5288 | ||
| 5bd4f169 | 5289 | /* Look through the relocs for a section during the first phase, and |
| 65f38f15 | 5290 | calculate needed space in the global offset table, procedure |
| 5d1634d7 | 5291 | linkage table, and dynamic reloc sections. */ |
| 5bd4f169 | 5292 | |
| b34976b6 | 5293 | static bfd_boolean |
| 4ce794b7 AM |
5294 | ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, |
| 5295 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 5296 | { |
| 65f38f15 | 5297 | struct ppc_link_hash_table *htab; |
| 5bd4f169 | 5298 | Elf_Internal_Shdr *symtab_hdr; |
| c7e2358a | 5299 | struct elf_link_hash_entry **sym_hashes; |
| 5bd4f169 AM |
5300 | const Elf_Internal_Rela *rel; |
| 5301 | const Elf_Internal_Rela *rel_end; | |
| 5bd4f169 | 5302 | asection *sreloc; |
| 1e2f5b6e | 5303 | asection **opd_sym_map; |
| 3a71aa26 | 5304 | struct elf_link_hash_entry *tga, *dottga; |
| 5bd4f169 | 5305 | |
| 0e1862bb | 5306 | if (bfd_link_relocatable (info)) |
| b34976b6 | 5307 | return TRUE; |
| 5bd4f169 | 5308 | |
| 680a3378 AM |
5309 | /* Don't do anything special with non-loaded, non-alloced sections. |
| 5310 | In particular, any relocs in such sections should not affect GOT | |
| 5311 | and PLT reference counting (ie. we don't allow them to create GOT | |
| 5312 | or PLT entries), there's no possibility or desire to optimize TLS | |
| 5313 | relocs, and there's not much point in propagating relocs to shared | |
| 5314 | libs that the dynamic linker won't relocate. */ | |
| 5315 | if ((sec->flags & SEC_ALLOC) == 0) | |
| 5316 | return TRUE; | |
| 5317 | ||
| 0c8d6e5c | 5318 | BFD_ASSERT (is_ppc64_elf (abfd)); |
| 0ffa91dd | 5319 | |
| 65f38f15 | 5320 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
5321 | if (htab == NULL) |
| 5322 | return FALSE; | |
| 5323 | ||
| 3a71aa26 AM |
5324 | tga = elf_link_hash_lookup (&htab->elf, "__tls_get_addr", |
| 5325 | FALSE, FALSE, TRUE); | |
| 5326 | dottga = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 5327 | FALSE, FALSE, TRUE); | |
| 0ffa91dd | 5328 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 5329 | sym_hashes = elf_sym_hashes (abfd); |
| 5bd4f169 | 5330 | sreloc = NULL; |
| 1e2f5b6e | 5331 | opd_sym_map = NULL; |
| f6c7c3e8 AM |
5332 | if (ppc64_elf_section_data (sec) != NULL |
| 5333 | && ppc64_elf_section_data (sec)->sec_type == sec_opd) | |
| 5334 | opd_sym_map = ppc64_elf_section_data (sec)->u.opd.func_sec; | |
| 5bd4f169 AM |
5335 | |
| 5336 | rel_end = relocs + sec->reloc_count; | |
| 5337 | for (rel = relocs; rel < rel_end; rel++) | |
| 5338 | { | |
| 5339 | unsigned long r_symndx; | |
| 5340 | struct elf_link_hash_entry *h; | |
| 04c9666a | 5341 | enum elf_ppc64_reloc_type r_type; |
| 727fc41e | 5342 | int tls_type; |
| 7c8fe5c4 | 5343 | struct _ppc64_elf_section_data *ppc64_sec; |
| cbf95972 | 5344 | struct plt_entry **ifunc, **plt_list; |
| 5bd4f169 AM |
5345 | |
| 5346 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 5347 | if (r_symndx < symtab_hdr->sh_info) | |
| 5348 | h = NULL; | |
| 5349 | else | |
| 973a3492 L |
5350 | { |
| 5351 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 5352 | h = elf_follow_link (h); |
| 81fbe831 AM |
5353 | |
| 5354 | /* PR15323, ref flags aren't set for references in the same | |
| 5355 | object. */ | |
| 5356 | h->root.non_ir_ref = 1; | |
| 1c865ab2 AM |
5357 | |
| 5358 | if (h == htab->elf.hgot) | |
| 5359 | sec->has_toc_reloc = 1; | |
| 973a3492 | 5360 | } |
| 5bd4f169 | 5361 | |
| 727fc41e | 5362 | tls_type = 0; |
| e054468f | 5363 | ifunc = NULL; |
| 25f23106 AM |
5364 | if (h != NULL) |
| 5365 | { | |
| 5366 | if (h->type == STT_GNU_IFUNC) | |
| 5367 | { | |
| 5368 | h->needs_plt = 1; | |
| 5369 | ifunc = &h->plt.plist; | |
| 5370 | } | |
| 5371 | } | |
| 5372 | else | |
| 5373 | { | |
| 5374 | Elf_Internal_Sym *isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5375 | abfd, r_symndx); | |
| 5376 | if (isym == NULL) | |
| 5377 | return FALSE; | |
| 5378 | ||
| 5379 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
| 5380 | { | |
| 5381 | ifunc = update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5382 | rel->r_addend, PLT_IFUNC); | |
| 5383 | if (ifunc == NULL) | |
| 5384 | return FALSE; | |
| 5385 | } | |
| 5386 | } | |
| 727fc41e | 5387 | |
| cbf95972 | 5388 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 5389 | switch (r_type) |
| 5bd4f169 | 5390 | { |
| 727fc41e AM |
5391 | case R_PPC64_TLSGD: |
| 5392 | case R_PPC64_TLSLD: | |
| 5393 | /* These special tls relocs tie a call to __tls_get_addr with | |
| 5394 | its parameter symbol. */ | |
| 5395 | break; | |
| 5396 | ||
| 411e1bfb AM |
5397 | case R_PPC64_GOT_TLSLD16: |
| 5398 | case R_PPC64_GOT_TLSLD16_LO: | |
| 5399 | case R_PPC64_GOT_TLSLD16_HI: | |
| 5400 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 5401 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5402 | goto dogottls; |
| 5403 | ||
| 5404 | case R_PPC64_GOT_TLSGD16: | |
| 5405 | case R_PPC64_GOT_TLSGD16_LO: | |
| 5406 | case R_PPC64_GOT_TLSGD16_HI: | |
| 5407 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 5408 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
5409 | goto dogottls; |
| 5410 | ||
| 5411 | case R_PPC64_GOT_TPREL16_DS: | |
| 5412 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 5413 | case R_PPC64_GOT_TPREL16_HI: | |
| 5414 | case R_PPC64_GOT_TPREL16_HA: | |
| 0e1862bb | 5415 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
5416 | info->flags |= DF_STATIC_TLS; |
| 5417 | tls_type = TLS_TLS | TLS_TPREL; | |
| 5418 | goto dogottls; | |
| 5419 | ||
| 5420 | case R_PPC64_GOT_DTPREL16_DS: | |
| 5421 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 5422 | case R_PPC64_GOT_DTPREL16_HI: | |
| 5423 | case R_PPC64_GOT_DTPREL16_HA: | |
| 5424 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 5425 | dogottls: | |
| 5426 | sec->has_tls_reloc = 1; | |
| 5427 | /* Fall thru */ | |
| 5428 | ||
| 5bd4f169 | 5429 | case R_PPC64_GOT16: |
| 5bd4f169 | 5430 | case R_PPC64_GOT16_DS: |
| 65f38f15 AM |
5431 | case R_PPC64_GOT16_HA: |
| 5432 | case R_PPC64_GOT16_HI: | |
| 5433 | case R_PPC64_GOT16_LO: | |
| 5bd4f169 | 5434 | case R_PPC64_GOT16_LO_DS: |
| 65f38f15 | 5435 | /* This symbol requires a global offset table entry. */ |
| 4c52953f | 5436 | sec->has_toc_reloc = 1; |
| 33c0ec9d AM |
5437 | if (r_type == R_PPC64_GOT_TLSLD16 |
| 5438 | || r_type == R_PPC64_GOT_TLSGD16 | |
| 5439 | || r_type == R_PPC64_GOT_TPREL16_DS | |
| 5440 | || r_type == R_PPC64_GOT_DTPREL16_DS | |
| 5441 | || r_type == R_PPC64_GOT16 | |
| 5442 | || r_type == R_PPC64_GOT16_DS) | |
| 5443 | { | |
| 5444 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5445 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| 33c0ec9d AM |
5446 | } |
| 5447 | ||
| e717da7e AM |
5448 | if (ppc64_elf_tdata (abfd)->got == NULL |
| 5449 | && !create_got_section (abfd, info)) | |
| b34976b6 | 5450 | return FALSE; |
| 5bd4f169 AM |
5451 | |
| 5452 | if (h != NULL) | |
| 5453 | { | |
| 411e1bfb AM |
5454 | struct ppc_link_hash_entry *eh; |
| 5455 | struct got_entry *ent; | |
| 65f38f15 | 5456 | |
| 411e1bfb AM |
5457 | eh = (struct ppc_link_hash_entry *) h; |
| 5458 | for (ent = eh->elf.got.glist; ent != NULL; ent = ent->next) | |
| 5459 | if (ent->addend == rel->r_addend | |
| e717da7e | 5460 | && ent->owner == abfd |
| 411e1bfb AM |
5461 | && ent->tls_type == tls_type) |
| 5462 | break; | |
| 5463 | if (ent == NULL) | |
| 5bd4f169 | 5464 | { |
| 411e1bfb | 5465 | bfd_size_type amt = sizeof (*ent); |
| 4ce794b7 | 5466 | ent = bfd_alloc (abfd, amt); |
| 411e1bfb | 5467 | if (ent == NULL) |
| b34976b6 | 5468 | return FALSE; |
| 411e1bfb AM |
5469 | ent->next = eh->elf.got.glist; |
| 5470 | ent->addend = rel->r_addend; | |
| e717da7e | 5471 | ent->owner = abfd; |
| 411e1bfb | 5472 | ent->tls_type = tls_type; |
| 927be08e | 5473 | ent->is_indirect = FALSE; |
| 411e1bfb AM |
5474 | ent->got.refcount = 0; |
| 5475 | eh->elf.got.glist = ent; | |
| 5bd4f169 | 5476 | } |
| 411e1bfb | 5477 | ent->got.refcount += 1; |
| e7b938ca | 5478 | eh->tls_mask |= tls_type; |
| 5bd4f169 | 5479 | } |
| 411e1bfb AM |
5480 | else |
| 5481 | /* This is a global offset table entry for a local symbol. */ | |
| 5482 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5483 | rel->r_addend, tls_type)) | |
| 5484 | return FALSE; | |
| a345bc8d AM |
5485 | |
| 5486 | /* We may also need a plt entry if the symbol turns out to be | |
| 5487 | an ifunc. */ | |
| 0e1862bb | 5488 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1) |
| a345bc8d AM |
5489 | { |
| 5490 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5491 | return FALSE; | |
| 5492 | } | |
| 5bd4f169 AM |
5493 | break; |
| 5494 | ||
| 5bd4f169 | 5495 | case R_PPC64_PLT16_HA: |
| 65f38f15 AM |
5496 | case R_PPC64_PLT16_HI: |
| 5497 | case R_PPC64_PLT16_LO: | |
| 5498 | case R_PPC64_PLT32: | |
| 5499 | case R_PPC64_PLT64: | |
| cbf95972 AM |
5500 | /* This symbol requires a procedure linkage table entry. */ |
| 5501 | plt_list = ifunc; | |
| 5502 | if (h != NULL) | |
| e054468f | 5503 | { |
| e054468f AM |
5504 | h->needs_plt = 1; |
| 5505 | if (h->root.root.string[0] == '.' | |
| 5506 | && h->root.root.string[1] != '\0') | |
| 5507 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| cbf95972 AM |
5508 | plt_list = &h->plt.plist; |
| 5509 | } | |
| 5510 | if (plt_list == NULL) | |
| 5511 | { | |
| 5512 | /* It does not make sense to have a procedure linkage | |
| 5513 | table entry for a non-ifunc local symbol. */ | |
| 5514 | info->callbacks->einfo | |
| 5515 | (_("%P: %H: %s reloc against local symbol\n"), | |
| 5516 | abfd, sec, rel->r_offset, | |
| 5517 | ppc64_elf_howto_table[r_type]->name); | |
| 5518 | bfd_set_error (bfd_error_bad_value); | |
| 5519 | return FALSE; | |
| e054468f | 5520 | } |
| cbf95972 AM |
5521 | if (!update_plt_info (abfd, plt_list, rel->r_addend)) |
| 5522 | return FALSE; | |
| 5bd4f169 AM |
5523 | break; |
| 5524 | ||
| 5525 | /* The following relocations don't need to propagate the | |
| 5526 | relocation if linking a shared object since they are | |
| 5527 | section relative. */ | |
| 5528 | case R_PPC64_SECTOFF: | |
| 5529 | case R_PPC64_SECTOFF_LO: | |
| 5530 | case R_PPC64_SECTOFF_HI: | |
| 5531 | case R_PPC64_SECTOFF_HA: | |
| 5532 | case R_PPC64_SECTOFF_DS: | |
| 5533 | case R_PPC64_SECTOFF_LO_DS: | |
| 411e1bfb AM |
5534 | case R_PPC64_DTPREL16: |
| 5535 | case R_PPC64_DTPREL16_LO: | |
| 5536 | case R_PPC64_DTPREL16_HI: | |
| 5537 | case R_PPC64_DTPREL16_HA: | |
| 5538 | case R_PPC64_DTPREL16_DS: | |
| 5539 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
5540 | case R_PPC64_DTPREL16_HIGH: |
| 5541 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
5542 | case R_PPC64_DTPREL16_HIGHER: |
| 5543 | case R_PPC64_DTPREL16_HIGHERA: | |
| 5544 | case R_PPC64_DTPREL16_HIGHEST: | |
| 5545 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 5bd4f169 AM |
5546 | break; |
| 5547 | ||
| ad8e1ba5 | 5548 | /* Nor do these. */ |
| 25f23106 AM |
5549 | case R_PPC64_REL16: |
| 5550 | case R_PPC64_REL16_LO: | |
| 5551 | case R_PPC64_REL16_HI: | |
| 5552 | case R_PPC64_REL16_HA: | |
| a680de9a | 5553 | case R_PPC64_REL16DX_HA: |
| 25f23106 AM |
5554 | break; |
| 5555 | ||
| 45965137 AM |
5556 | /* Not supported as a dynamic relocation. */ |
| 5557 | case R_PPC64_ADDR64_LOCAL: | |
| 0e1862bb | 5558 | if (bfd_link_pic (info)) |
| 45965137 AM |
5559 | { |
| 5560 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) | |
| 5561 | ppc_howto_init (); | |
| 5562 | info->callbacks->einfo (_("%P: %H: %s reloc unsupported " | |
| 5563 | "in shared libraries and PIEs.\n"), | |
| 5564 | abfd, sec, rel->r_offset, | |
| 5565 | ppc64_elf_howto_table[r_type]->name); | |
| 5566 | bfd_set_error (bfd_error_bad_value); | |
| 5567 | return FALSE; | |
| 5568 | } | |
| 5569 | break; | |
| 5570 | ||
| ad8e1ba5 | 5571 | case R_PPC64_TOC16: |
| 33c0ec9d AM |
5572 | case R_PPC64_TOC16_DS: |
| 5573 | htab->do_multi_toc = 1; | |
| d77c8a4b | 5574 | ppc64_elf_tdata (abfd)->has_small_toc_reloc = 1; |
| ad8e1ba5 AM |
5575 | case R_PPC64_TOC16_LO: |
| 5576 | case R_PPC64_TOC16_HI: | |
| 5577 | case R_PPC64_TOC16_HA: | |
| ad8e1ba5 | 5578 | case R_PPC64_TOC16_LO_DS: |
| 4c52953f | 5579 | sec->has_toc_reloc = 1; |
| ad8e1ba5 AM |
5580 | break; |
| 5581 | ||
| 006589cf AM |
5582 | /* Marker reloc. */ |
| 5583 | case R_PPC64_ENTRY: | |
| 5584 | break; | |
| 5585 | ||
| 5bd4f169 AM |
5586 | /* This relocation describes the C++ object vtable hierarchy. |
| 5587 | Reconstruct it for later use during GC. */ | |
| 5588 | case R_PPC64_GNU_VTINHERIT: | |
| c152c796 | 5589 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| b34976b6 | 5590 | return FALSE; |
| 5bd4f169 AM |
5591 | break; |
| 5592 | ||
| 5593 | /* This relocation describes which C++ vtable entries are actually | |
| 5594 | used. Record for later use during GC. */ | |
| 5595 | case R_PPC64_GNU_VTENTRY: | |
| d17e0c6e JB |
5596 | BFD_ASSERT (h != NULL); |
| 5597 | if (h != NULL | |
| 5598 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
| b34976b6 | 5599 | return FALSE; |
| 5bd4f169 AM |
5600 | break; |
| 5601 | ||
| 721956f4 AM |
5602 | case R_PPC64_REL14: |
| 5603 | case R_PPC64_REL14_BRTAKEN: | |
| 5604 | case R_PPC64_REL14_BRNTAKEN: | |
| 220c76dd AM |
5605 | { |
| 5606 | asection *dest = NULL; | |
| 5607 | ||
| 5608 | /* Heuristic: If jumping outside our section, chances are | |
| 5609 | we are going to need a stub. */ | |
| 5610 | if (h != NULL) | |
| 5611 | { | |
| 5612 | /* If the sym is weak it may be overridden later, so | |
| 5613 | don't assume we know where a weak sym lives. */ | |
| 5614 | if (h->root.type == bfd_link_hash_defined) | |
| 5615 | dest = h->root.u.def.section; | |
| 5616 | } | |
| 5617 | else | |
| 87d72d41 AM |
5618 | { |
| 5619 | Elf_Internal_Sym *isym; | |
| 5620 | ||
| 5621 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
| 5622 | abfd, r_symndx); | |
| 5623 | if (isym == NULL) | |
| 5624 | return FALSE; | |
| 5625 | ||
| 5626 | dest = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5627 | } | |
| 5628 | ||
| 220c76dd | 5629 | if (dest != sec) |
| 7c8fe5c4 | 5630 | ppc64_elf_section_data (sec)->has_14bit_branch = 1; |
| 220c76dd | 5631 | } |
| 721956f4 AM |
5632 | /* Fall through. */ |
| 5633 | ||
| 5d1634d7 | 5634 | case R_PPC64_REL24: |
| cbf95972 AM |
5635 | plt_list = ifunc; |
| 5636 | if (h != NULL) | |
| 5d1634d7 | 5637 | { |
| e054468f AM |
5638 | h->needs_plt = 1; |
| 5639 | if (h->root.root.string[0] == '.' | |
| 5640 | && h->root.root.string[1] != '\0') | |
| 5641 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| cbf95972 | 5642 | |
| 3a71aa26 | 5643 | if (h == tga || h == dottga) |
| cbf95972 AM |
5644 | { |
| 5645 | sec->has_tls_reloc = 1; | |
| 5646 | if (rel != relocs | |
| 5647 | && (ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSGD | |
| 5648 | || ELF64_R_TYPE (rel[-1].r_info) == R_PPC64_TLSLD)) | |
| 5649 | /* We have a new-style __tls_get_addr call with | |
| 5650 | a marker reloc. */ | |
| 5651 | ; | |
| 5652 | else | |
| 5653 | /* Mark this section as having an old-style call. */ | |
| 5654 | sec->has_tls_get_addr_call = 1; | |
| 5655 | } | |
| 5656 | plt_list = &h->plt.plist; | |
| 411e1bfb | 5657 | } |
| cbf95972 AM |
5658 | |
| 5659 | /* We may need a .plt entry if the function this reloc | |
| 5660 | refers to is in a shared lib. */ | |
| 5661 | if (plt_list | |
| 5662 | && !update_plt_info (abfd, plt_list, rel->r_addend)) | |
| 5663 | return FALSE; | |
| 411e1bfb AM |
5664 | break; |
| 5665 | ||
| cbf95972 AM |
5666 | case R_PPC64_ADDR14: |
| 5667 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 5668 | case R_PPC64_ADDR14_BRTAKEN: | |
| 5669 | case R_PPC64_ADDR24: | |
| 5670 | goto dodyn; | |
| 5671 | ||
| 411e1bfb AM |
5672 | case R_PPC64_TPREL64: |
| 5673 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_TPREL; | |
| 0e1862bb | 5674 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
5675 | info->flags |= DF_STATIC_TLS; |
| 5676 | goto dotlstoc; | |
| 5677 | ||
| 5678 | case R_PPC64_DTPMOD64: | |
| 5679 | if (rel + 1 < rel_end | |
| 5680 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 5681 | && rel[1].r_offset == rel->r_offset + 8) | |
| 951fd09b | 5682 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_GD; |
| 411e1bfb | 5683 | else |
| 951fd09b | 5684 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_LD; |
| 411e1bfb AM |
5685 | goto dotlstoc; |
| 5686 | ||
| 5687 | case R_PPC64_DTPREL64: | |
| 5688 | tls_type = TLS_EXPLICIT | TLS_TLS | TLS_DTPREL; | |
| 5689 | if (rel != relocs | |
| 5690 | && rel[-1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPMOD64) | |
| 5691 | && rel[-1].r_offset == rel->r_offset - 8) | |
| 5692 | /* This is the second reloc of a dtpmod, dtprel pair. | |
| 5693 | Don't mark with TLS_DTPREL. */ | |
| 5694 | goto dodyn; | |
| 5695 | ||
| 5696 | dotlstoc: | |
| 5697 | sec->has_tls_reloc = 1; | |
| 5698 | if (h != NULL) | |
| 5699 | { | |
| 5700 | struct ppc_link_hash_entry *eh; | |
| 5701 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 5702 | eh->tls_mask |= tls_type; |
| 411e1bfb AM |
5703 | } |
| 5704 | else | |
| 5705 | if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, | |
| 5706 | rel->r_addend, tls_type)) | |
| 5707 | return FALSE; | |
| 5708 | ||
| 7c8fe5c4 AM |
5709 | ppc64_sec = ppc64_elf_section_data (sec); |
| 5710 | if (ppc64_sec->sec_type != sec_toc) | |
| 411e1bfb | 5711 | { |
| 3a71aa26 AM |
5712 | bfd_size_type amt; |
| 5713 | ||
| e7b938ca | 5714 | /* One extra to simplify get_tls_mask. */ |
| 3a71aa26 AM |
5715 | amt = sec->size * sizeof (unsigned) / 8 + sizeof (unsigned); |
| 5716 | ppc64_sec->u.toc.symndx = bfd_zalloc (abfd, amt); | |
| 5717 | if (ppc64_sec->u.toc.symndx == NULL) | |
| 5718 | return FALSE; | |
| 5719 | amt = sec->size * sizeof (bfd_vma) / 8; | |
| 5720 | ppc64_sec->u.toc.add = bfd_zalloc (abfd, amt); | |
| 5721 | if (ppc64_sec->u.toc.add == NULL) | |
| 411e1bfb | 5722 | return FALSE; |
| 7c8fe5c4 AM |
5723 | BFD_ASSERT (ppc64_sec->sec_type == sec_normal); |
| 5724 | ppc64_sec->sec_type = sec_toc; | |
| 411e1bfb AM |
5725 | } |
| 5726 | BFD_ASSERT (rel->r_offset % 8 == 0); | |
| 3a71aa26 AM |
5727 | ppc64_sec->u.toc.symndx[rel->r_offset / 8] = r_symndx; |
| 5728 | ppc64_sec->u.toc.add[rel->r_offset / 8] = rel->r_addend; | |
| 951fd09b AM |
5729 | |
| 5730 | /* Mark the second slot of a GD or LD entry. | |
| 5731 | -1 to indicate GD and -2 to indicate LD. */ | |
| 5732 | if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_GD)) | |
| 3a71aa26 | 5733 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -1; |
| 951fd09b | 5734 | else if (tls_type == (TLS_EXPLICIT | TLS_TLS | TLS_LD)) |
| 3a71aa26 | 5735 | ppc64_sec->u.toc.symndx[rel->r_offset / 8 + 1] = -2; |
| 411e1bfb AM |
5736 | goto dodyn; |
| 5737 | ||
| 5738 | case R_PPC64_TPREL16: | |
| 5739 | case R_PPC64_TPREL16_LO: | |
| 5740 | case R_PPC64_TPREL16_HI: | |
| 5741 | case R_PPC64_TPREL16_HA: | |
| 5742 | case R_PPC64_TPREL16_DS: | |
| 5743 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
5744 | case R_PPC64_TPREL16_HIGH: |
| 5745 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
5746 | case R_PPC64_TPREL16_HIGHER: |
| 5747 | case R_PPC64_TPREL16_HIGHERA: | |
| 5748 | case R_PPC64_TPREL16_HIGHEST: | |
| 5749 | case R_PPC64_TPREL16_HIGHESTA: | |
| 0e1862bb | 5750 | if (bfd_link_pic (info)) |
| 411e1bfb | 5751 | { |
| afb93314 | 5752 | info->flags |= DF_STATIC_TLS; |
| 411e1bfb | 5753 | goto dodyn; |
| 5d1634d7 AM |
5754 | } |
| 5755 | break; | |
| 5756 | ||
| e86ce104 | 5757 | case R_PPC64_ADDR64: |
| 1e2f5b6e | 5758 | if (opd_sym_map != NULL |
| 1e2f5b6e | 5759 | && rel + 1 < rel_end |
| 4ce794b7 | 5760 | && ELF64_R_TYPE ((rel + 1)->r_info) == R_PPC64_TOC) |
| 1e2f5b6e | 5761 | { |
| 8387904d AM |
5762 | if (h != NULL) |
| 5763 | { | |
| 5764 | if (h->root.root.string[0] == '.' | |
| 5765 | && h->root.root.string[1] != 0 | |
| b31867b6 | 5766 | && lookup_fdh ((struct ppc_link_hash_entry *) h, htab)) |
| 8387904d AM |
5767 | ; |
| 5768 | else | |
| 5769 | ((struct ppc_link_hash_entry *) h)->is_func = 1; | |
| 5770 | } | |
| 5771 | else | |
| 5772 | { | |
| 5773 | asection *s; | |
| 87d72d41 | 5774 | Elf_Internal_Sym *isym; |
| 1e2f5b6e | 5775 | |
| 87d72d41 AM |
5776 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5777 | abfd, r_symndx); | |
| 5778 | if (isym == NULL) | |
| 8387904d | 5779 | return FALSE; |
| 87d72d41 AM |
5780 | |
| 5781 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
| 5782 | if (s != NULL && s != sec) | |
| 51aecdc5 | 5783 | opd_sym_map[OPD_NDX (rel->r_offset)] = s; |
| 8387904d | 5784 | } |
| 1e2f5b6e | 5785 | } |
| e86ce104 AM |
5786 | /* Fall through. */ |
| 5787 | ||
| 65f38f15 AM |
5788 | case R_PPC64_ADDR16: |
| 5789 | case R_PPC64_ADDR16_DS: | |
| 5790 | case R_PPC64_ADDR16_HA: | |
| 5791 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
5792 | case R_PPC64_ADDR16_HIGH: |
| 5793 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
5794 | case R_PPC64_ADDR16_HIGHER: |
| 5795 | case R_PPC64_ADDR16_HIGHERA: | |
| 5796 | case R_PPC64_ADDR16_HIGHEST: | |
| 5797 | case R_PPC64_ADDR16_HIGHESTA: | |
| 5798 | case R_PPC64_ADDR16_LO: | |
| 5799 | case R_PPC64_ADDR16_LO_DS: | |
| 0e1862bb | 5800 | if (h != NULL && !bfd_link_pic (info) && abiversion (abfd) != 1 |
| a345bc8d AM |
5801 | && rel->r_addend == 0) |
| 5802 | { | |
| 5803 | /* We may need a .plt entry if this reloc refers to a | |
| 5804 | function in a shared lib. */ | |
| 5805 | if (!update_plt_info (abfd, &h->plt.plist, rel->r_addend)) | |
| 5806 | return FALSE; | |
| 5807 | h->pointer_equality_needed = 1; | |
| 5808 | } | |
| 5809 | /* Fall through. */ | |
| 5810 | ||
| 5811 | case R_PPC64_REL30: | |
| 5812 | case R_PPC64_REL32: | |
| 5813 | case R_PPC64_REL64: | |
| 65f38f15 | 5814 | case R_PPC64_ADDR32: |
| 65f38f15 AM |
5815 | case R_PPC64_UADDR16: |
| 5816 | case R_PPC64_UADDR32: | |
| 5817 | case R_PPC64_UADDR64: | |
| 5bd4f169 | 5818 | case R_PPC64_TOC: |
| 0e1862bb | 5819 | if (h != NULL && !bfd_link_pic (info)) |
| 81848ca0 | 5820 | /* We may need a copy reloc. */ |
| f5385ebf | 5821 | h->non_got_ref = 1; |
| 81848ca0 | 5822 | |
| 41bd81ab | 5823 | /* Don't propagate .opd relocs. */ |
| 1e2f5b6e | 5824 | if (NO_OPD_RELOCS && opd_sym_map != NULL) |
| e86ce104 | 5825 | break; |
| e86ce104 | 5826 | |
| 65f38f15 AM |
5827 | /* If we are creating a shared library, and this is a reloc |
| 5828 | against a global symbol, or a non PC relative reloc | |
| 5829 | against a local symbol, then we need to copy the reloc | |
| 5830 | into the shared library. However, if we are linking with | |
| 5831 | -Bsymbolic, we do not need to copy a reloc against a | |
| 5832 | global symbol which is defined in an object we are | |
| 5833 | including in the link (i.e., DEF_REGULAR is set). At | |
| 5834 | this point we have not seen all the input files, so it is | |
| 5835 | possible that DEF_REGULAR is not set now but will be set | |
| 5836 | later (it is never cleared). In case of a weak definition, | |
| 5837 | DEF_REGULAR may be cleared later by a strong definition in | |
| 5838 | a shared library. We account for that possibility below by | |
| f4656909 | 5839 | storing information in the dyn_relocs field of the hash |
| 65f38f15 AM |
5840 | table entry. A similar situation occurs when creating |
| 5841 | shared libraries and symbol visibility changes render the | |
| 5842 | symbol local. | |
| 5843 | ||
| 5844 | If on the other hand, we are creating an executable, we | |
| 5845 | may need to keep relocations for symbols satisfied by a | |
| 5846 | dynamic library if we manage to avoid copy relocs for the | |
| 5847 | symbol. */ | |
| 411e1bfb | 5848 | dodyn: |
| 0e1862bb | 5849 | if ((bfd_link_pic (info) |
| 1d483afe | 5850 | && (must_be_dyn_reloc (info, r_type) |
| 65f38f15 | 5851 | || (h != NULL |
| 198f1157 | 5852 | && (!SYMBOLIC_BIND (info, h) |
| 65f38f15 | 5853 | || h->root.type == bfd_link_hash_defweak |
| f5385ebf | 5854 | || !h->def_regular)))) |
| f4656909 | 5855 | || (ELIMINATE_COPY_RELOCS |
| 0e1862bb | 5856 | && !bfd_link_pic (info) |
| 65f38f15 AM |
5857 | && h != NULL |
| 5858 | && (h->root.type == bfd_link_hash_defweak | |
| 25f23106 | 5859 | || !h->def_regular)) |
| 0e1862bb | 5860 | || (!bfd_link_pic (info) |
| 25f23106 | 5861 | && ifunc != NULL)) |
| 5bd4f169 | 5862 | { |
| 65f38f15 AM |
5863 | /* We must copy these reloc types into the output file. |
| 5864 | Create a reloc section in dynobj and make room for | |
| 5865 | this reloc. */ | |
| 5bd4f169 AM |
5866 | if (sreloc == NULL) |
| 5867 | { | |
| 83bac4b0 NC |
5868 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 5869 | (sec, htab->elf.dynobj, 3, abfd, /*rela?*/ TRUE); | |
| 65f38f15 | 5870 | |
| 5bd4f169 | 5871 | if (sreloc == NULL) |
| 83bac4b0 | 5872 | return FALSE; |
| 5bd4f169 AM |
5873 | } |
| 5874 | ||
| 65f38f15 AM |
5875 | /* If this is a global symbol, we count the number of |
| 5876 | relocations we need for this symbol. */ | |
| 5877 | if (h != NULL) | |
| 5878 | { | |
| 19e08130 AM |
5879 | struct elf_dyn_relocs *p; |
| 5880 | struct elf_dyn_relocs **head; | |
| 5881 | ||
| ec338859 | 5882 | head = &((struct ppc_link_hash_entry *) h)->dyn_relocs; |
| 19e08130 AM |
5883 | p = *head; |
| 5884 | if (p == NULL || p->sec != sec) | |
| 5885 | { | |
| 5886 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5887 | if (p == NULL) | |
| 5888 | return FALSE; | |
| 5889 | p->next = *head; | |
| 5890 | *head = p; | |
| 5891 | p->sec = sec; | |
| 5892 | p->count = 0; | |
| 5893 | p->pc_count = 0; | |
| 5894 | } | |
| 5895 | p->count += 1; | |
| 5896 | if (!must_be_dyn_reloc (info, r_type)) | |
| 5897 | p->pc_count += 1; | |
| 65f38f15 AM |
5898 | } |
| 5899 | else | |
| 5900 | { | |
| ec338859 AM |
5901 | /* Track dynamic relocs needed for local syms too. |
| 5902 | We really need local syms available to do this | |
| 5903 | easily. Oh well. */ | |
| 19e08130 AM |
5904 | struct ppc_dyn_relocs *p; |
| 5905 | struct ppc_dyn_relocs **head; | |
| 5906 | bfd_boolean is_ifunc; | |
| ec338859 | 5907 | asection *s; |
| 6edfbbad | 5908 | void *vpp; |
| 87d72d41 | 5909 | Elf_Internal_Sym *isym; |
| 6edfbbad | 5910 | |
| 87d72d41 AM |
5911 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, |
| 5912 | abfd, r_symndx); | |
| 5913 | if (isym == NULL) | |
| b34976b6 | 5914 | return FALSE; |
| ec338859 | 5915 | |
| 87d72d41 AM |
5916 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); |
| 5917 | if (s == NULL) | |
| 5918 | s = sec; | |
| 5919 | ||
| 6edfbbad | 5920 | vpp = &elf_section_data (s)->local_dynrel; |
| 19e08130 AM |
5921 | head = (struct ppc_dyn_relocs **) vpp; |
| 5922 | is_ifunc = ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC; | |
| 5923 | p = *head; | |
| 5924 | if (p != NULL && p->sec == sec && p->ifunc != is_ifunc) | |
| 5925 | p = p->next; | |
| 5926 | if (p == NULL || p->sec != sec || p->ifunc != is_ifunc) | |
| 5927 | { | |
| 5928 | p = bfd_alloc (htab->elf.dynobj, sizeof *p); | |
| 5929 | if (p == NULL) | |
| 5930 | return FALSE; | |
| 5931 | p->next = *head; | |
| 5932 | *head = p; | |
| 5933 | p->sec = sec; | |
| 5934 | p->ifunc = is_ifunc; | |
| 5935 | p->count = 0; | |
| 5936 | } | |
| 5937 | p->count += 1; | |
| ec338859 | 5938 | } |
| 65f38f15 | 5939 | } |
| 5bd4f169 | 5940 | break; |
| 65f38f15 AM |
5941 | |
| 5942 | default: | |
| 96e0dda4 | 5943 | break; |
| 5bd4f169 AM |
5944 | } |
| 5945 | } | |
| 5946 | ||
| b34976b6 | 5947 | return TRUE; |
| 5bd4f169 AM |
5948 | } |
| 5949 | ||
| ee67d69a AM |
5950 | /* Merge backend specific data from an object file to the output |
| 5951 | object file when linking. */ | |
| 5952 | ||
| 5953 | static bfd_boolean | |
| 5954 | ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) | |
| 5955 | { | |
| 5956 | unsigned long iflags, oflags; | |
| 5957 | ||
| 5958 | if ((ibfd->flags & BFD_LINKER_CREATED) != 0) | |
| 5959 | return TRUE; | |
| 5960 | ||
| 5961 | if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd)) | |
| 5962 | return TRUE; | |
| 5963 | ||
| 5964 | if (!_bfd_generic_verify_endian_match (ibfd, obfd)) | |
| 5965 | return FALSE; | |
| 5966 | ||
| 5967 | iflags = elf_elfheader (ibfd)->e_flags; | |
| 5968 | oflags = elf_elfheader (obfd)->e_flags; | |
| 5969 | ||
| f6c7c3e8 | 5970 | if (iflags & ~EF_PPC64_ABI) |
| ee67d69a AM |
5971 | { |
| 5972 | (*_bfd_error_handler) | |
| 5973 | (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags); | |
| 5974 | bfd_set_error (bfd_error_bad_value); | |
| 5975 | return FALSE; | |
| 5976 | } | |
| f6c7c3e8 | 5977 | else if (iflags != oflags && iflags != 0) |
| ee67d69a AM |
5978 | { |
| 5979 | (*_bfd_error_handler) | |
| 5980 | (_("%B: ABI version %ld is not compatible with ABI version %ld output"), | |
| 5981 | ibfd, iflags, oflags); | |
| 5982 | bfd_set_error (bfd_error_bad_value); | |
| 5983 | return FALSE; | |
| 5984 | } | |
| 5985 | ||
| 5986 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
| 5987 | _bfd_elf_merge_object_attributes (ibfd, obfd); | |
| 5988 | ||
| 5989 | return TRUE; | |
| 5990 | } | |
| 5991 | ||
| 5992 | static bfd_boolean | |
| 5993 | ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr) | |
| 5994 | { | |
| 5995 | /* Print normal ELF private data. */ | |
| 5996 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
| 5997 | ||
| 5998 | if (elf_elfheader (abfd)->e_flags != 0) | |
| 5999 | { | |
| 6000 | FILE *file = ptr; | |
| 6001 | ||
| 6002 | /* xgettext:c-format */ | |
| 6003 | fprintf (file, _("private flags = 0x%lx:"), | |
| 6004 | elf_elfheader (abfd)->e_flags); | |
| 6005 | ||
| 6006 | if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0) | |
| 6007 | fprintf (file, _(" [abiv%ld]"), | |
| 6008 | elf_elfheader (abfd)->e_flags & EF_PPC64_ABI); | |
| 6009 | fputc ('\n', file); | |
| 6010 | } | |
| 6011 | ||
| 6012 | return TRUE; | |
| 6013 | } | |
| 6014 | ||
| 8387904d | 6015 | /* OFFSET in OPD_SEC specifies a function descriptor. Return the address |
| b53dfeb2 AM |
6016 | of the code entry point, and its section, which must be in the same |
| 6017 | object as OPD_SEC. Returns (bfd_vma) -1 on error. */ | |
| 8387904d AM |
6018 | |
| 6019 | static bfd_vma | |
| 6020 | opd_entry_value (asection *opd_sec, | |
| 6021 | bfd_vma offset, | |
| 6022 | asection **code_sec, | |
| aef36ac1 AM |
6023 | bfd_vma *code_off, |
| 6024 | bfd_boolean in_code_sec) | |
| 8387904d AM |
6025 | { |
| 6026 | bfd *opd_bfd = opd_sec->owner; | |
| 8860955f | 6027 | Elf_Internal_Rela *relocs; |
| 8387904d | 6028 | Elf_Internal_Rela *lo, *hi, *look; |
| 645ea6a9 | 6029 | bfd_vma val; |
| 8387904d | 6030 | |
| 9f296da3 AM |
6031 | /* No relocs implies we are linking a --just-symbols object, or looking |
| 6032 | at a final linked executable with addr2line or somesuch. */ | |
| 4b85d634 AM |
6033 | if (opd_sec->reloc_count == 0) |
| 6034 | { | |
| 729eabd5 | 6035 | bfd_byte *contents = ppc64_elf_tdata (opd_bfd)->opd.contents; |
| 3b36f7e6 | 6036 | |
| 729eabd5 AM |
6037 | if (contents == NULL) |
| 6038 | { | |
| 6039 | if (!bfd_malloc_and_get_section (opd_bfd, opd_sec, &contents)) | |
| 6040 | return (bfd_vma) -1; | |
| 6041 | ppc64_elf_tdata (opd_bfd)->opd.contents = contents; | |
| 6042 | } | |
| ee1e4ede | 6043 | |
| dbb3fbbb | 6044 | /* PR 17512: file: 64b9dfbb. */ |
| 451dfd38 | 6045 | if (offset + 7 >= opd_sec->size || offset + 7 < offset) |
| dbb3fbbb NC |
6046 | return (bfd_vma) -1; |
| 6047 | ||
| 729eabd5 | 6048 | val = bfd_get_64 (opd_bfd, contents + offset); |
| aef36ac1 AM |
6049 | if (code_sec != NULL) |
| 6050 | { | |
| 6051 | asection *sec, *likely = NULL; | |
| ee1e4ede | 6052 | |
| aef36ac1 | 6053 | if (in_code_sec) |
| 4b85d634 | 6054 | { |
| aef36ac1 AM |
6055 | sec = *code_sec; |
| 6056 | if (sec->vma <= val | |
| 6057 | && val < sec->vma + sec->size) | |
| 6058 | likely = sec; | |
| 6059 | else | |
| 6060 | val = -1; | |
| 6061 | } | |
| 6062 | else | |
| 6063 | for (sec = opd_bfd->sections; sec != NULL; sec = sec->next) | |
| 6064 | if (sec->vma <= val | |
| 6065 | && (sec->flags & SEC_LOAD) != 0 | |
| 6066 | && (sec->flags & SEC_ALLOC) != 0) | |
| 6067 | likely = sec; | |
| 6068 | if (likely != NULL) | |
| 6069 | { | |
| 6070 | *code_sec = likely; | |
| 6071 | if (code_off != NULL) | |
| 6072 | *code_off = val - likely->vma; | |
| 4b85d634 AM |
6073 | } |
| 6074 | } | |
| aef36ac1 | 6075 | return val; |
| 4b85d634 AM |
6076 | } |
| 6077 | ||
| 0c8d6e5c | 6078 | BFD_ASSERT (is_ppc64_elf (opd_bfd)); |
| 0ffa91dd | 6079 | |
| 729eabd5 | 6080 | relocs = ppc64_elf_tdata (opd_bfd)->opd.relocs; |
| 8860955f AM |
6081 | if (relocs == NULL) |
| 6082 | relocs = _bfd_elf_link_read_relocs (opd_bfd, opd_sec, NULL, NULL, TRUE); | |
| 877a8638 NC |
6083 | /* PR 17512: file: df8e1fd6. */ |
| 6084 | if (relocs == NULL) | |
| 6085 | return (bfd_vma) -1; | |
| 645ea6a9 | 6086 | |
| 8387904d | 6087 | /* Go find the opd reloc at the sym address. */ |
| 8860955f | 6088 | lo = relocs; |
| 8387904d | 6089 | hi = lo + opd_sec->reloc_count - 1; /* ignore last reloc */ |
| 645ea6a9 | 6090 | val = (bfd_vma) -1; |
| 8387904d AM |
6091 | while (lo < hi) |
| 6092 | { | |
| 6093 | look = lo + (hi - lo) / 2; | |
| 6094 | if (look->r_offset < offset) | |
| 6095 | lo = look + 1; | |
| 6096 | else if (look->r_offset > offset) | |
| 6097 | hi = look; | |
| 6098 | else | |
| 6099 | { | |
| 0ffa91dd NC |
6100 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (opd_bfd); |
| 6101 | ||
| 8387904d AM |
6102 | if (ELF64_R_TYPE (look->r_info) == R_PPC64_ADDR64 |
| 6103 | && ELF64_R_TYPE ((look + 1)->r_info) == R_PPC64_TOC) | |
| 6104 | { | |
| 6105 | unsigned long symndx = ELF64_R_SYM (look->r_info); | |
| b53dfeb2 | 6106 | asection *sec = NULL; |
| 8387904d | 6107 | |
| b53dfeb2 AM |
6108 | if (symndx >= symtab_hdr->sh_info |
| 6109 | && elf_sym_hashes (opd_bfd) != NULL) | |
| 8387904d AM |
6110 | { |
| 6111 | struct elf_link_hash_entry **sym_hashes; | |
| 6112 | struct elf_link_hash_entry *rh; | |
| 6113 | ||
| 6114 | sym_hashes = elf_sym_hashes (opd_bfd); | |
| 6115 | rh = sym_hashes[symndx - symtab_hdr->sh_info]; | |
| 128205bb AM |
6116 | if (rh != NULL) |
| 6117 | { | |
| 6118 | rh = elf_follow_link (rh); | |
| bb854a36 AM |
6119 | if (rh->root.type != bfd_link_hash_defined |
| 6120 | && rh->root.type != bfd_link_hash_defweak) | |
| 6121 | break; | |
| 6122 | if (rh->root.u.def.section->owner == opd_bfd) | |
| b53dfeb2 | 6123 | { |
| bb854a36 AM |
6124 | val = rh->root.u.def.value; |
| 6125 | sec = rh->root.u.def.section; | |
| b53dfeb2 AM |
6126 | } |
| 6127 | } | |
| 6128 | } | |
| 6129 | ||
| 6130 | if (sec == NULL) | |
| 6131 | { | |
| 6132 | Elf_Internal_Sym *sym; | |
| 6133 | ||
| 6134 | if (symndx < symtab_hdr->sh_info) | |
| 6135 | { | |
| 6136 | sym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 6137 | if (sym == NULL) | |
| 6138 | { | |
| 6139 | size_t symcnt = symtab_hdr->sh_info; | |
| 6140 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, | |
| 6141 | symcnt, 0, | |
| 6142 | NULL, NULL, NULL); | |
| 6143 | if (sym == NULL) | |
| 6144 | break; | |
| 6145 | symtab_hdr->contents = (bfd_byte *) sym; | |
| 6146 | } | |
| 6147 | sym += symndx; | |
| 128205bb AM |
6148 | } |
| 6149 | else | |
| 6150 | { | |
| b53dfeb2 AM |
6151 | sym = bfd_elf_get_elf_syms (opd_bfd, symtab_hdr, |
| 6152 | 1, symndx, | |
| 6153 | NULL, NULL, NULL); | |
| 128205bb AM |
6154 | if (sym == NULL) |
| 6155 | break; | |
| 128205bb | 6156 | } |
| b53dfeb2 AM |
6157 | sec = bfd_section_from_elf_index (opd_bfd, sym->st_shndx); |
| 6158 | if (sec == NULL) | |
| 6159 | break; | |
| 6160 | BFD_ASSERT ((sec->flags & SEC_MERGE) == 0); | |
| 6161 | val = sym->st_value; | |
| 8387904d | 6162 | } |
| b53dfeb2 | 6163 | |
| 8387904d AM |
6164 | val += look->r_addend; |
| 6165 | if (code_off != NULL) | |
| 6166 | *code_off = val; | |
| 6167 | if (code_sec != NULL) | |
| aef36ac1 AM |
6168 | { |
| 6169 | if (in_code_sec && *code_sec != sec) | |
| 6170 | return -1; | |
| 6171 | else | |
| 6172 | *code_sec = sec; | |
| 6173 | } | |
| b53dfeb2 | 6174 | if (sec->output_section != NULL) |
| 8387904d | 6175 | val += sec->output_section->vma + sec->output_offset; |
| 8387904d AM |
6176 | } |
| 6177 | break; | |
| 6178 | } | |
| 6179 | } | |
| 645ea6a9 | 6180 | |
| 645ea6a9 | 6181 | return val; |
| 8387904d AM |
6182 | } |
| 6183 | ||
| aef36ac1 AM |
6184 | /* If the ELF symbol SYM might be a function in SEC, return the |
| 6185 | function size and set *CODE_OFF to the function's entry point, | |
| 6186 | otherwise return zero. */ | |
| 9f296da3 | 6187 | |
| aef36ac1 AM |
6188 | static bfd_size_type |
| 6189 | ppc64_elf_maybe_function_sym (const asymbol *sym, asection *sec, | |
| 6190 | bfd_vma *code_off) | |
| 9f296da3 | 6191 | { |
| aef36ac1 AM |
6192 | bfd_size_type size; |
| 6193 | ||
| 6194 | if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT | |
| 6195 | | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0) | |
| 6196 | return 0; | |
| 6197 | ||
| 6198 | size = 0; | |
| 6199 | if (!(sym->flags & BSF_SYNTHETIC)) | |
| 6200 | size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size; | |
| 6201 | ||
| 6202 | if (strcmp (sym->section->name, ".opd") == 0) | |
| 9f296da3 | 6203 | { |
| b07bca4e AM |
6204 | struct _opd_sec_data *opd = get_opd_info (sym->section); |
| 6205 | bfd_vma symval = sym->value; | |
| 6206 | ||
| 6207 | if (opd != NULL | |
| 6208 | && opd->adjust != NULL | |
| 6209 | && elf_section_data (sym->section)->relocs != NULL) | |
| 6210 | { | |
| 6211 | /* opd_entry_value will use cached relocs that have been | |
| 6212 | adjusted, but with raw symbols. That means both local | |
| 6213 | and global symbols need adjusting. */ | |
| 6214 | long adjust = opd->adjust[OPD_NDX (symval)]; | |
| 6215 | if (adjust == -1) | |
| 6216 | return 0; | |
| 6217 | symval += adjust; | |
| 6218 | } | |
| 6219 | ||
| 6220 | if (opd_entry_value (sym->section, symval, | |
| aef36ac1 AM |
6221 | &sec, code_off, TRUE) == (bfd_vma) -1) |
| 6222 | return 0; | |
| 6223 | /* An old ABI binary with dot-syms has a size of 24 on the .opd | |
| 6224 | symbol. This size has nothing to do with the code size of the | |
| 6225 | function, which is what we're supposed to return, but the | |
| 6226 | code size isn't available without looking up the dot-sym. | |
| 6227 | However, doing that would be a waste of time particularly | |
| 6228 | since elf_find_function will look at the dot-sym anyway. | |
| 6229 | Now, elf_find_function will keep the largest size of any | |
| 6230 | function sym found at the code address of interest, so return | |
| 6231 | 1 here to avoid it incorrectly caching a larger function size | |
| 6232 | for a small function. This does mean we return the wrong | |
| 6233 | size for a new-ABI function of size 24, but all that does is | |
| 6234 | disable caching for such functions. */ | |
| 6235 | if (size == 24) | |
| 6236 | size = 1; | |
| 9f296da3 | 6237 | } |
| aef36ac1 AM |
6238 | else |
| 6239 | { | |
| 6240 | if (sym->section != sec) | |
| 6241 | return 0; | |
| 6242 | *code_off = sym->value; | |
| 6243 | } | |
| 6244 | if (size == 0) | |
| 6245 | size = 1; | |
| 6246 | return size; | |
| 9f296da3 AM |
6247 | } |
| 6248 | ||
| 854b41e7 AM |
6249 | /* Return true if symbol is defined in a regular object file. */ |
| 6250 | ||
| 6251 | static bfd_boolean | |
| 6252 | is_static_defined (struct elf_link_hash_entry *h) | |
| 6253 | { | |
| 6254 | return ((h->root.type == bfd_link_hash_defined | |
| 6255 | || h->root.type == bfd_link_hash_defweak) | |
| 6256 | && h->root.u.def.section != NULL | |
| 6257 | && h->root.u.def.section->output_section != NULL); | |
| 6258 | } | |
| 6259 | ||
| b31867b6 AM |
6260 | /* If FDH is a function descriptor symbol, return the associated code |
| 6261 | entry symbol if it is defined. Return NULL otherwise. */ | |
| 6262 | ||
| 6263 | static struct ppc_link_hash_entry * | |
| 6264 | defined_code_entry (struct ppc_link_hash_entry *fdh) | |
| 6265 | { | |
| 6266 | if (fdh->is_func_descriptor) | |
| 6267 | { | |
| 6268 | struct ppc_link_hash_entry *fh = ppc_follow_link (fdh->oh); | |
| 6269 | if (fh->elf.root.type == bfd_link_hash_defined | |
| 6270 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6271 | return fh; | |
| 6272 | } | |
| 6273 | return NULL; | |
| 6274 | } | |
| 6275 | ||
| 6276 | /* If FH is a function code entry symbol, return the associated | |
| 6277 | function descriptor symbol if it is defined. Return NULL otherwise. */ | |
| 6278 | ||
| 6279 | static struct ppc_link_hash_entry * | |
| 6280 | defined_func_desc (struct ppc_link_hash_entry *fh) | |
| 6281 | { | |
| 6282 | if (fh->oh != NULL | |
| 6283 | && fh->oh->is_func_descriptor) | |
| 6284 | { | |
| 6285 | struct ppc_link_hash_entry *fdh = ppc_follow_link (fh->oh); | |
| 6286 | if (fdh->elf.root.type == bfd_link_hash_defined | |
| 6287 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 6288 | return fdh; | |
| 6289 | } | |
| 6290 | return NULL; | |
| 6291 | } | |
| 6292 | ||
| 74f0fb50 AM |
6293 | /* Mark all our entry sym sections, both opd and code section. */ |
| 6294 | ||
| 6295 | static void | |
| 6296 | ppc64_elf_gc_keep (struct bfd_link_info *info) | |
| 6297 | { | |
| 6298 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6299 | struct bfd_sym_chain *sym; | |
| 6300 | ||
| 4dfe6ac6 NC |
6301 | if (htab == NULL) |
| 6302 | return; | |
| 6303 | ||
| 74f0fb50 AM |
6304 | for (sym = info->gc_sym_list; sym != NULL; sym = sym->next) |
| 6305 | { | |
| b31867b6 | 6306 | struct ppc_link_hash_entry *eh, *fh; |
| 74f0fb50 AM |
6307 | asection *sec; |
| 6308 | ||
| 6309 | eh = (struct ppc_link_hash_entry *) | |
| b31867b6 | 6310 | elf_link_hash_lookup (&htab->elf, sym->name, FALSE, FALSE, TRUE); |
| 74f0fb50 AM |
6311 | if (eh == NULL) |
| 6312 | continue; | |
| 6313 | if (eh->elf.root.type != bfd_link_hash_defined | |
| 6314 | && eh->elf.root.type != bfd_link_hash_defweak) | |
| 6315 | continue; | |
| 6316 | ||
| b31867b6 AM |
6317 | fh = defined_code_entry (eh); |
| 6318 | if (fh != NULL) | |
| 74f0fb50 | 6319 | { |
| b31867b6 | 6320 | sec = fh->elf.root.u.def.section; |
| 74f0fb50 AM |
6321 | sec->flags |= SEC_KEEP; |
| 6322 | } | |
| 6323 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL | |
| 6324 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6325 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6326 | &sec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 AM |
6327 | sec->flags |= SEC_KEEP; |
| 6328 | ||
| 6329 | sec = eh->elf.root.u.def.section; | |
| 6330 | sec->flags |= SEC_KEEP; | |
| 6331 | } | |
| 6332 | } | |
| 6333 | ||
| 64d03ab5 AM |
6334 | /* Mark sections containing dynamically referenced symbols. When |
| 6335 | building shared libraries, we must assume that any visible symbol is | |
| 6336 | referenced. */ | |
| 6337 | ||
| 6338 | static bfd_boolean | |
| 6339 | ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry *h, void *inf) | |
| 6340 | { | |
| 6341 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
| 6342 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| b31867b6 | 6343 | struct ppc_link_hash_entry *fdh; |
| b407645f | 6344 | struct bfd_elf_dynamic_list *d = info->dynamic_list; |
| 64d03ab5 | 6345 | |
| 64d03ab5 | 6346 | /* Dynamic linking info is on the func descriptor sym. */ |
| b31867b6 AM |
6347 | fdh = defined_func_desc (eh); |
| 6348 | if (fdh != NULL) | |
| 6349 | eh = fdh; | |
| 64d03ab5 AM |
6350 | |
| 6351 | if ((eh->elf.root.type == bfd_link_hash_defined | |
| 6352 | || eh->elf.root.type == bfd_link_hash_defweak) | |
| 6353 | && (eh->elf.ref_dynamic | |
| 1c9177d9 | 6354 | || ((eh->elf.def_regular || ELF_COMMON_DEF_P (&eh->elf)) |
| 64d03ab5 | 6355 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_INTERNAL |
| 4c58e0d8 | 6356 | && ELF_ST_VISIBILITY (eh->elf.other) != STV_HIDDEN |
| 0e1862bb | 6357 | && (!bfd_link_executable (info) |
| b407645f AM |
6358 | || info->export_dynamic |
| 6359 | || (eh->elf.dynamic | |
| 6360 | && d != NULL | |
| 6361 | && (*d->match) (&d->head, NULL, eh->elf.root.root.string))) | |
| 4c58e0d8 AM |
6362 | && (strchr (eh->elf.root.root.string, ELF_VER_CHR) != NULL |
| 6363 | || !bfd_hide_sym_by_version (info->version_info, | |
| 6364 | eh->elf.root.root.string))))) | |
| 64d03ab5 AM |
6365 | { |
| 6366 | asection *code_sec; | |
| b31867b6 | 6367 | struct ppc_link_hash_entry *fh; |
| 64d03ab5 AM |
6368 | |
| 6369 | eh->elf.root.u.def.section->flags |= SEC_KEEP; | |
| 6370 | ||
| 6371 | /* Function descriptor syms cause the associated | |
| 6372 | function code sym section to be marked. */ | |
| b31867b6 AM |
6373 | fh = defined_code_entry (eh); |
| 6374 | if (fh != NULL) | |
| 6375 | { | |
| 6376 | code_sec = fh->elf.root.u.def.section; | |
| 6377 | code_sec->flags |= SEC_KEEP; | |
| 6378 | } | |
| 64d03ab5 AM |
6379 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6380 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6381 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6382 | &code_sec, NULL, FALSE) != (bfd_vma) -1) |
| 64d03ab5 AM |
6383 | code_sec->flags |= SEC_KEEP; |
| 6384 | } | |
| 6385 | ||
| 6386 | return TRUE; | |
| 6387 | } | |
| 6388 | ||
| 5bd4f169 AM |
6389 | /* Return the section that should be marked against GC for a given |
| 6390 | relocation. */ | |
| 6391 | ||
| 6392 | static asection * | |
| 4ce794b7 | 6393 | ppc64_elf_gc_mark_hook (asection *sec, |
| fb34365b | 6394 | struct bfd_link_info *info, |
| 4ce794b7 AM |
6395 | Elf_Internal_Rela *rel, |
| 6396 | struct elf_link_hash_entry *h, | |
| 6397 | Elf_Internal_Sym *sym) | |
| 5bd4f169 | 6398 | { |
| ccfa59ea AM |
6399 | asection *rsec; |
| 6400 | ||
| ccfa59ea AM |
6401 | /* Syms return NULL if we're marking .opd, so we avoid marking all |
| 6402 | function sections, as all functions are referenced in .opd. */ | |
| 6403 | rsec = NULL; | |
| 6404 | if (get_opd_info (sec) != NULL) | |
| 6405 | return rsec; | |
| 1e2f5b6e | 6406 | |
| 5bd4f169 AM |
6407 | if (h != NULL) |
| 6408 | { | |
| 04c9666a | 6409 | enum elf_ppc64_reloc_type r_type; |
| b31867b6 | 6410 | struct ppc_link_hash_entry *eh, *fh, *fdh; |
| a33d1f77 | 6411 | |
| 4ce794b7 | 6412 | r_type = ELF64_R_TYPE (rel->r_info); |
| a33d1f77 | 6413 | switch (r_type) |
| 5bd4f169 AM |
6414 | { |
| 6415 | case R_PPC64_GNU_VTINHERIT: | |
| 6416 | case R_PPC64_GNU_VTENTRY: | |
| 6417 | break; | |
| 6418 | ||
| 6419 | default: | |
| 6420 | switch (h->root.type) | |
| 6421 | { | |
| 6422 | case bfd_link_hash_defined: | |
| 6423 | case bfd_link_hash_defweak: | |
| ccfa59ea | 6424 | eh = (struct ppc_link_hash_entry *) h; |
| b31867b6 AM |
6425 | fdh = defined_func_desc (eh); |
| 6426 | if (fdh != NULL) | |
| 6427 | eh = fdh; | |
| 1e2f5b6e AM |
6428 | |
| 6429 | /* Function descriptor syms cause the associated | |
| 6430 | function code sym section to be marked. */ | |
| b31867b6 AM |
6431 | fh = defined_code_entry (eh); |
| 6432 | if (fh != NULL) | |
| ccfa59ea AM |
6433 | { |
| 6434 | /* They also mark their opd section. */ | |
| 74f0fb50 | 6435 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6436 | |
| b31867b6 | 6437 | rsec = fh->elf.root.u.def.section; |
| ccfa59ea | 6438 | } |
| 8387904d AM |
6439 | else if (get_opd_info (eh->elf.root.u.def.section) != NULL |
| 6440 | && opd_entry_value (eh->elf.root.u.def.section, | |
| 6441 | eh->elf.root.u.def.value, | |
| aef36ac1 | 6442 | &rsec, NULL, FALSE) != (bfd_vma) -1) |
| 74f0fb50 | 6443 | eh->elf.root.u.def.section->gc_mark = 1; |
| ccfa59ea | 6444 | else |
| 1e2f5b6e AM |
6445 | rsec = h->root.u.def.section; |
| 6446 | break; | |
| 5bd4f169 AM |
6447 | |
| 6448 | case bfd_link_hash_common: | |
| 1e2f5b6e AM |
6449 | rsec = h->root.u.c.p->section; |
| 6450 | break; | |
| 5bd4f169 AM |
6451 | |
| 6452 | default: | |
| fb34365b | 6453 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 5bd4f169 AM |
6454 | } |
| 6455 | } | |
| 6456 | } | |
| 6457 | else | |
| 6458 | { | |
| 74f0fb50 | 6459 | struct _opd_sec_data *opd; |
| 1e2f5b6e AM |
6460 | |
| 6461 | rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 74f0fb50 AM |
6462 | opd = get_opd_info (rsec); |
| 6463 | if (opd != NULL && opd->func_sec != NULL) | |
| ccfa59ea | 6464 | { |
| 74f0fb50 | 6465 | rsec->gc_mark = 1; |
| ccfa59ea | 6466 | |
| 51aecdc5 | 6467 | rsec = opd->func_sec[OPD_NDX (sym->st_value + rel->r_addend)]; |
| ccfa59ea | 6468 | } |
| 5bd4f169 AM |
6469 | } |
| 6470 | ||
| 1e2f5b6e | 6471 | return rsec; |
| 5bd4f169 AM |
6472 | } |
| 6473 | ||
| 65f38f15 AM |
6474 | /* Update the .got, .plt. and dynamic reloc reference counts for the |
| 6475 | section being removed. */ | |
| 5bd4f169 | 6476 | |
| b34976b6 | 6477 | static bfd_boolean |
| 4ce794b7 AM |
6478 | ppc64_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info, |
| 6479 | asection *sec, const Elf_Internal_Rela *relocs) | |
| 5bd4f169 | 6480 | { |
| 411e1bfb | 6481 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
6482 | Elf_Internal_Shdr *symtab_hdr; |
| 6483 | struct elf_link_hash_entry **sym_hashes; | |
| 411e1bfb | 6484 | struct got_entry **local_got_ents; |
| 5bd4f169 | 6485 | const Elf_Internal_Rela *rel, *relend; |
| 5bd4f169 | 6486 | |
| 0e1862bb | 6487 | if (bfd_link_relocatable (info)) |
| 7dda2462 TG |
6488 | return TRUE; |
| 6489 | ||
| 680a3378 AM |
6490 | if ((sec->flags & SEC_ALLOC) == 0) |
| 6491 | return TRUE; | |
| 6492 | ||
| ec338859 AM |
6493 | elf_section_data (sec)->local_dynrel = NULL; |
| 6494 | ||
| 411e1bfb | 6495 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6496 | if (htab == NULL) |
| 6497 | return FALSE; | |
| 6498 | ||
| 0ffa91dd | 6499 | symtab_hdr = &elf_symtab_hdr (abfd); |
| 5bd4f169 | 6500 | sym_hashes = elf_sym_hashes (abfd); |
| 411e1bfb | 6501 | local_got_ents = elf_local_got_ents (abfd); |
| 5bd4f169 AM |
6502 | |
| 6503 | relend = relocs + sec->reloc_count; | |
| 6504 | for (rel = relocs; rel < relend; rel++) | |
| a33d1f77 AM |
6505 | { |
| 6506 | unsigned long r_symndx; | |
| 04c9666a | 6507 | enum elf_ppc64_reloc_type r_type; |
| 58ac9f71 | 6508 | struct elf_link_hash_entry *h = NULL; |
| cbf95972 | 6509 | struct plt_entry **plt_list; |
| f961d9dd | 6510 | unsigned char tls_type = 0; |
| 5bd4f169 | 6511 | |
| a33d1f77 | 6512 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4ce794b7 | 6513 | r_type = ELF64_R_TYPE (rel->r_info); |
| 58ac9f71 AM |
6514 | if (r_symndx >= symtab_hdr->sh_info) |
| 6515 | { | |
| 6516 | struct ppc_link_hash_entry *eh; | |
| 6061a67d AM |
6517 | struct elf_dyn_relocs **pp; |
| 6518 | struct elf_dyn_relocs *p; | |
| 58ac9f71 AM |
6519 | |
| 6520 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 6521 | h = elf_follow_link (h); |
| 58ac9f71 AM |
6522 | eh = (struct ppc_link_hash_entry *) h; |
| 6523 | ||
| 6524 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) | |
| 6525 | if (p->sec == sec) | |
| 6526 | { | |
| 6527 | /* Everything must go for SEC. */ | |
| 6528 | *pp = p->next; | |
| 6529 | break; | |
| 6530 | } | |
| 6531 | } | |
| 6532 | ||
| a33d1f77 AM |
6533 | switch (r_type) |
| 6534 | { | |
| 411e1bfb AM |
6535 | case R_PPC64_GOT_TLSLD16: |
| 6536 | case R_PPC64_GOT_TLSLD16_LO: | |
| 6537 | case R_PPC64_GOT_TLSLD16_HI: | |
| 6538 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 6539 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
6540 | goto dogot; |
| 6541 | ||
| 6542 | case R_PPC64_GOT_TLSGD16: | |
| 6543 | case R_PPC64_GOT_TLSGD16_LO: | |
| 6544 | case R_PPC64_GOT_TLSGD16_HI: | |
| 6545 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 6546 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
6547 | goto dogot; |
| 6548 | ||
| 6549 | case R_PPC64_GOT_TPREL16_DS: | |
| 6550 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 6551 | case R_PPC64_GOT_TPREL16_HI: | |
| 6552 | case R_PPC64_GOT_TPREL16_HA: | |
| 6553 | tls_type = TLS_TLS | TLS_TPREL; | |
| 6554 | goto dogot; | |
| 6555 | ||
| 6556 | case R_PPC64_GOT_DTPREL16_DS: | |
| 6557 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 6558 | case R_PPC64_GOT_DTPREL16_HI: | |
| 6559 | case R_PPC64_GOT_DTPREL16_HA: | |
| 6560 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 6561 | goto dogot; | |
| 6562 | ||
| a33d1f77 AM |
6563 | case R_PPC64_GOT16: |
| 6564 | case R_PPC64_GOT16_DS: | |
| 6565 | case R_PPC64_GOT16_HA: | |
| 6566 | case R_PPC64_GOT16_HI: | |
| 6567 | case R_PPC64_GOT16_LO: | |
| 6568 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb AM |
6569 | dogot: |
| 6570 | { | |
| 6571 | struct got_entry *ent; | |
| 6572 | ||
| 58ac9f71 AM |
6573 | if (h != NULL) |
| 6574 | ent = h->got.glist; | |
| 411e1bfb AM |
6575 | else |
| 6576 | ent = local_got_ents[r_symndx]; | |
| 6577 | ||
| 6578 | for (; ent != NULL; ent = ent->next) | |
| 6579 | if (ent->addend == rel->r_addend | |
| e717da7e | 6580 | && ent->owner == abfd |
| 411e1bfb AM |
6581 | && ent->tls_type == tls_type) |
| 6582 | break; | |
| 6583 | if (ent == NULL) | |
| 6584 | abort (); | |
| 6585 | if (ent->got.refcount > 0) | |
| 6586 | ent->got.refcount -= 1; | |
| 6587 | } | |
| a33d1f77 | 6588 | break; |
| 65f38f15 | 6589 | |
| a33d1f77 AM |
6590 | case R_PPC64_PLT16_HA: |
| 6591 | case R_PPC64_PLT16_HI: | |
| 6592 | case R_PPC64_PLT16_LO: | |
| 6593 | case R_PPC64_PLT32: | |
| 6594 | case R_PPC64_PLT64: | |
| 721956f4 AM |
6595 | case R_PPC64_REL14: |
| 6596 | case R_PPC64_REL14_BRNTAKEN: | |
| 6597 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 | 6598 | case R_PPC64_REL24: |
| cbf95972 | 6599 | plt_list = NULL; |
| 58ac9f71 | 6600 | if (h != NULL) |
| cbf95972 AM |
6601 | plt_list = &h->plt.plist; |
| 6602 | else if (local_got_ents != NULL) | |
| 6603 | { | |
| 6604 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 6605 | (local_got_ents + symtab_hdr->sh_info); | |
| 6606 | unsigned char *local_got_tls_masks = (unsigned char *) | |
| 6607 | (local_plt + symtab_hdr->sh_info); | |
| 6608 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 6609 | plt_list = local_plt + r_symndx; | |
| 6610 | } | |
| 6611 | if (plt_list) | |
| 5d1634d7 | 6612 | { |
| 411e1bfb AM |
6613 | struct plt_entry *ent; |
| 6614 | ||
| cbf95972 | 6615 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6616 | if (ent->addend == rel->r_addend) |
| 6617 | break; | |
| 7c6c1722 | 6618 | if (ent != NULL && ent->plt.refcount > 0) |
| 411e1bfb | 6619 | ent->plt.refcount -= 1; |
| 5d1634d7 | 6620 | } |
| e86ce104 | 6621 | break; |
| 5d1634d7 | 6622 | |
| a33d1f77 AM |
6623 | default: |
| 6624 | break; | |
| 6625 | } | |
| 6626 | } | |
| b34976b6 | 6627 | return TRUE; |
| 5bd4f169 AM |
6628 | } |
| 6629 | ||
| deb0e272 AM |
6630 | /* The maximum size of .sfpr. */ |
| 6631 | #define SFPR_MAX (218*4) | |
| 6632 | ||
| 6633 | struct sfpr_def_parms | |
| 6634 | { | |
| 699733f6 AM |
6635 | const char name[12]; |
| 6636 | unsigned char lo, hi; | |
| deb0e272 AM |
6637 | bfd_byte * (*write_ent) (bfd *, bfd_byte *, int); |
| 6638 | bfd_byte * (*write_tail) (bfd *, bfd_byte *, int); | |
| 6639 | }; | |
| 6640 | ||
| a4b6fadd AM |
6641 | /* Auto-generate _save*, _rest* functions in .sfpr. |
| 6642 | If STUB_SEC is non-null, define alias symbols in STUB_SEC | |
| 6643 | instead. */ | |
| deb0e272 | 6644 | |
| 4dfe6ac6 | 6645 | static bfd_boolean |
| a4b6fadd AM |
6646 | sfpr_define (struct bfd_link_info *info, |
| 6647 | const struct sfpr_def_parms *parm, | |
| 6648 | asection *stub_sec) | |
| deb0e272 AM |
6649 | { |
| 6650 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 6651 | unsigned int i; | |
| 6652 | size_t len = strlen (parm->name); | |
| 6653 | bfd_boolean writing = FALSE; | |
| 699733f6 | 6654 | char sym[16]; |
| deb0e272 | 6655 | |
| 4dfe6ac6 NC |
6656 | if (htab == NULL) |
| 6657 | return FALSE; | |
| 6658 | ||
| deb0e272 AM |
6659 | memcpy (sym, parm->name, len); |
| 6660 | sym[len + 2] = 0; | |
| 6661 | ||
| 6662 | for (i = parm->lo; i <= parm->hi; i++) | |
| 6663 | { | |
| a4b6fadd | 6664 | struct ppc_link_hash_entry *h; |
| deb0e272 AM |
6665 | |
| 6666 | sym[len + 0] = i / 10 + '0'; | |
| 6667 | sym[len + 1] = i % 10 + '0'; | |
| a4b6fadd | 6668 | h = (struct ppc_link_hash_entry *) |
| b32547cd | 6669 | elf_link_hash_lookup (&htab->elf, sym, writing, TRUE, TRUE); |
| a4b6fadd | 6670 | if (stub_sec != NULL) |
| deb0e272 | 6671 | { |
| a4b6fadd AM |
6672 | if (h != NULL |
| 6673 | && h->elf.root.type == bfd_link_hash_defined | |
| 6674 | && h->elf.root.u.def.section == htab->sfpr) | |
| 6675 | { | |
| 6676 | struct elf_link_hash_entry *s; | |
| 6677 | char buf[32]; | |
| 6678 | sprintf (buf, "%08x.%s", stub_sec->id & 0xffffffff, sym); | |
| 6679 | s = elf_link_hash_lookup (&htab->elf, buf, TRUE, TRUE, FALSE); | |
| 6680 | if (s == NULL) | |
| 6681 | return FALSE; | |
| 6682 | if (s->root.type == bfd_link_hash_new | |
| 6683 | || (s->root.type = bfd_link_hash_defined | |
| 6684 | && s->root.u.def.section == stub_sec)) | |
| 6685 | { | |
| 6686 | s->root.type = bfd_link_hash_defined; | |
| 6687 | s->root.u.def.section = stub_sec; | |
| 6688 | s->root.u.def.value = (stub_sec->size | |
| 6689 | + h->elf.root.u.def.value); | |
| 6690 | s->ref_regular = 1; | |
| 6691 | s->def_regular = 1; | |
| 6692 | s->ref_regular_nonweak = 1; | |
| 6693 | s->forced_local = 1; | |
| 6694 | s->non_elf = 0; | |
| 6695 | s->root.linker_def = 1; | |
| 6696 | } | |
| 6697 | } | |
| 6698 | continue; | |
| 6699 | } | |
| 6700 | if (h != NULL) | |
| 6701 | { | |
| 6702 | h->save_res = 1; | |
| 6703 | if (!h->elf.def_regular) | |
| deb0e272 | 6704 | { |
| a4b6fadd AM |
6705 | h->elf.root.type = bfd_link_hash_defined; |
| 6706 | h->elf.root.u.def.section = htab->sfpr; | |
| 6707 | h->elf.root.u.def.value = htab->sfpr->size; | |
| 6708 | h->elf.type = STT_FUNC; | |
| 6709 | h->elf.def_regular = 1; | |
| b32547cd | 6710 | h->elf.non_elf = 0; |
| a4b6fadd AM |
6711 | _bfd_elf_link_hash_hide_symbol (info, &h->elf, TRUE); |
| 6712 | writing = TRUE; | |
| deb0e272 | 6713 | if (htab->sfpr->contents == NULL) |
| a4b6fadd AM |
6714 | { |
| 6715 | htab->sfpr->contents = bfd_alloc (htab->elf.dynobj, SFPR_MAX); | |
| 6716 | if (htab->sfpr->contents == NULL) | |
| 6717 | return FALSE; | |
| 6718 | } | |
| deb0e272 AM |
6719 | } |
| 6720 | } | |
| 6721 | if (writing) | |
| 6722 | { | |
| 6723 | bfd_byte *p = htab->sfpr->contents + htab->sfpr->size; | |
| 6724 | if (i != parm->hi) | |
| 6725 | p = (*parm->write_ent) (htab->elf.dynobj, p, i); | |
| 6726 | else | |
| 6727 | p = (*parm->write_tail) (htab->elf.dynobj, p, i); | |
| 6728 | htab->sfpr->size = p - htab->sfpr->contents; | |
| 6729 | } | |
| 6730 | } | |
| 6731 | ||
| 6732 | return TRUE; | |
| 6733 | } | |
| 6734 | ||
| 6735 | static bfd_byte * | |
| 6736 | savegpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6737 | { | |
| 6738 | bfd_put_32 (abfd, STD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6739 | return p + 4; | |
| 6740 | } | |
| 6741 | ||
| 6742 | static bfd_byte * | |
| 6743 | savegpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6744 | { | |
| 6745 | p = savegpr0 (abfd, p, r); | |
| a078d95a | 6746 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6747 | p = p + 4; |
| 6748 | bfd_put_32 (abfd, BLR, p); | |
| 6749 | return p + 4; | |
| 6750 | } | |
| 6751 | ||
| 6752 | static bfd_byte * | |
| 6753 | restgpr0 (bfd *abfd, bfd_byte *p, int r) | |
| 6754 | { | |
| 6755 | bfd_put_32 (abfd, LD_R0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6756 | return p + 4; | |
| 6757 | } | |
| 6758 | ||
| 6759 | static bfd_byte * | |
| 6760 | restgpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6761 | { | |
| a078d95a | 6762 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6763 | p = p + 4; |
| 6764 | p = restgpr0 (abfd, p, r); | |
| 6765 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6766 | p = p + 4; | |
| 6767 | if (r == 29) | |
| 6768 | { | |
| 6769 | p = restgpr0 (abfd, p, 30); | |
| 6770 | p = restgpr0 (abfd, p, 31); | |
| 6771 | } | |
| 6772 | bfd_put_32 (abfd, BLR, p); | |
| 6773 | return p + 4; | |
| 6774 | } | |
| 6775 | ||
| 6776 | static bfd_byte * | |
| 6777 | savegpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6778 | { | |
| 6779 | bfd_put_32 (abfd, STD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6780 | return p + 4; | |
| 6781 | } | |
| 6782 | ||
| 6783 | static bfd_byte * | |
| 6784 | savegpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6785 | { | |
| 6786 | p = savegpr1 (abfd, p, r); | |
| 6787 | bfd_put_32 (abfd, BLR, p); | |
| 6788 | return p + 4; | |
| 6789 | } | |
| 6790 | ||
| 6791 | static bfd_byte * | |
| 6792 | restgpr1 (bfd *abfd, bfd_byte *p, int r) | |
| 6793 | { | |
| 6794 | bfd_put_32 (abfd, LD_R0_0R12 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6795 | return p + 4; | |
| 6796 | } | |
| 6797 | ||
| 6798 | static bfd_byte * | |
| 6799 | restgpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6800 | { | |
| 6801 | p = restgpr1 (abfd, p, r); | |
| 6802 | bfd_put_32 (abfd, BLR, p); | |
| 6803 | return p + 4; | |
| 6804 | } | |
| 6805 | ||
| 6806 | static bfd_byte * | |
| 6807 | savefpr (bfd *abfd, bfd_byte *p, int r) | |
| 6808 | { | |
| 6809 | bfd_put_32 (abfd, STFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6810 | return p + 4; | |
| 6811 | } | |
| 6812 | ||
| 6813 | static bfd_byte * | |
| 6814 | savefpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6815 | { | |
| 6816 | p = savefpr (abfd, p, r); | |
| a078d95a | 6817 | bfd_put_32 (abfd, STD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6818 | p = p + 4; |
| 6819 | bfd_put_32 (abfd, BLR, p); | |
| 6820 | return p + 4; | |
| 6821 | } | |
| 6822 | ||
| 6823 | static bfd_byte * | |
| 6824 | restfpr (bfd *abfd, bfd_byte *p, int r) | |
| 6825 | { | |
| 6826 | bfd_put_32 (abfd, LFD_FR0_0R1 + (r << 21) + (1 << 16) - (32 - r) * 8, p); | |
| 6827 | return p + 4; | |
| 6828 | } | |
| 6829 | ||
| 6830 | static bfd_byte * | |
| 6831 | restfpr0_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6832 | { | |
| a078d95a | 6833 | bfd_put_32 (abfd, LD_R0_0R1 + STK_LR, p); |
| deb0e272 AM |
6834 | p = p + 4; |
| 6835 | p = restfpr (abfd, p, r); | |
| 6836 | bfd_put_32 (abfd, MTLR_R0, p); | |
| 6837 | p = p + 4; | |
| 6838 | if (r == 29) | |
| 6839 | { | |
| 6840 | p = restfpr (abfd, p, 30); | |
| 6841 | p = restfpr (abfd, p, 31); | |
| 6842 | } | |
| 6843 | bfd_put_32 (abfd, BLR, p); | |
| 6844 | return p + 4; | |
| 6845 | } | |
| 6846 | ||
| 6847 | static bfd_byte * | |
| 6848 | savefpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6849 | { | |
| 6850 | p = savefpr (abfd, p, r); | |
| 6851 | bfd_put_32 (abfd, BLR, p); | |
| 6852 | return p + 4; | |
| 6853 | } | |
| 6854 | ||
| 6855 | static bfd_byte * | |
| 6856 | restfpr1_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6857 | { | |
| 6858 | p = restfpr (abfd, p, r); | |
| 6859 | bfd_put_32 (abfd, BLR, p); | |
| 6860 | return p + 4; | |
| 6861 | } | |
| 6862 | ||
| 6863 | static bfd_byte * | |
| 6864 | savevr (bfd *abfd, bfd_byte *p, int r) | |
| 6865 | { | |
| 6866 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6867 | p = p + 4; | |
| 6868 | bfd_put_32 (abfd, STVX_VR0_R12_R0 + (r << 21), p); | |
| 6869 | return p + 4; | |
| 6870 | } | |
| 6871 | ||
| 6872 | static bfd_byte * | |
| 6873 | savevr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6874 | { | |
| 6875 | p = savevr (abfd, p, r); | |
| 6876 | bfd_put_32 (abfd, BLR, p); | |
| 6877 | return p + 4; | |
| 6878 | } | |
| 6879 | ||
| 6880 | static bfd_byte * | |
| 6881 | restvr (bfd *abfd, bfd_byte *p, int r) | |
| 6882 | { | |
| 6883 | bfd_put_32 (abfd, LI_R12_0 + (1 << 16) - (32 - r) * 16, p); | |
| 6884 | p = p + 4; | |
| 6885 | bfd_put_32 (abfd, LVX_VR0_R12_R0 + (r << 21), p); | |
| 6886 | return p + 4; | |
| 6887 | } | |
| 6888 | ||
| 6889 | static bfd_byte * | |
| 6890 | restvr_tail (bfd *abfd, bfd_byte *p, int r) | |
| 6891 | { | |
| 6892 | p = restvr (abfd, p, r); | |
| 6893 | bfd_put_32 (abfd, BLR, p); | |
| 6894 | return p + 4; | |
| 6895 | } | |
| 6896 | ||
| e86ce104 AM |
6897 | /* Called via elf_link_hash_traverse to transfer dynamic linking |
| 6898 | information on function code symbol entries to their corresponding | |
| 6899 | function descriptor symbol entries. */ | |
| deb0e272 | 6900 | |
| b34976b6 | 6901 | static bfd_boolean |
| 4ce794b7 | 6902 | func_desc_adjust (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 6903 | { |
| e86ce104 | 6904 | struct bfd_link_info *info; |
| 65f38f15 | 6905 | struct ppc_link_hash_table *htab; |
| 411e1bfb | 6906 | struct plt_entry *ent; |
| 50bc7936 AM |
6907 | struct ppc_link_hash_entry *fh; |
| 6908 | struct ppc_link_hash_entry *fdh; | |
| 6909 | bfd_boolean force_local; | |
| 5bd4f169 | 6910 | |
| 50bc7936 AM |
6911 | fh = (struct ppc_link_hash_entry *) h; |
| 6912 | if (fh->elf.root.type == bfd_link_hash_indirect) | |
| b34976b6 | 6913 | return TRUE; |
| e86ce104 | 6914 | |
| 4ce794b7 | 6915 | info = inf; |
| 65f38f15 | 6916 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
6917 | if (htab == NULL) |
| 6918 | return FALSE; | |
| 5bd4f169 | 6919 | |
| c09bdfe5 AM |
6920 | /* Resolve undefined references to dot-symbols as the value |
| 6921 | in the function descriptor, if we have one in a regular object. | |
| 6922 | This is to satisfy cases like ".quad .foo". Calls to functions | |
| 6923 | in dynamic objects are handled elsewhere. */ | |
| 6924 | if (fh->elf.root.type == bfd_link_hash_undefweak | |
| 6925 | && fh->was_undefined | |
| b31867b6 AM |
6926 | && (fdh = defined_func_desc (fh)) != NULL |
| 6927 | && get_opd_info (fdh->elf.root.u.def.section) != NULL | |
| 6928 | && opd_entry_value (fdh->elf.root.u.def.section, | |
| 6929 | fdh->elf.root.u.def.value, | |
| c09bdfe5 | 6930 | &fh->elf.root.u.def.section, |
| aef36ac1 | 6931 | &fh->elf.root.u.def.value, FALSE) != (bfd_vma) -1) |
| c09bdfe5 | 6932 | { |
| b31867b6 | 6933 | fh->elf.root.type = fdh->elf.root.type; |
| f5385ebf | 6934 | fh->elf.forced_local = 1; |
| b31867b6 AM |
6935 | fh->elf.def_regular = fdh->elf.def_regular; |
| 6936 | fh->elf.def_dynamic = fdh->elf.def_dynamic; | |
| c09bdfe5 AM |
6937 | } |
| 6938 | ||
| e86ce104 AM |
6939 | /* If this is a function code symbol, transfer dynamic linking |
| 6940 | information to the function descriptor symbol. */ | |
| 50bc7936 | 6941 | if (!fh->is_func) |
| b34976b6 | 6942 | return TRUE; |
| e86ce104 | 6943 | |
| 50bc7936 | 6944 | for (ent = fh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 411e1bfb AM |
6945 | if (ent->plt.refcount > 0) |
| 6946 | break; | |
| 50bc7936 AM |
6947 | if (ent == NULL |
| 6948 | || fh->elf.root.root.string[0] != '.' | |
| 6949 | || fh->elf.root.root.string[1] == '\0') | |
| 6950 | return TRUE; | |
| 5bd4f169 | 6951 | |
| 50bc7936 AM |
6952 | /* Find the corresponding function descriptor symbol. Create it |
| 6953 | as undefined if necessary. */ | |
| 5bd4f169 | 6954 | |
| b31867b6 | 6955 | fdh = lookup_fdh (fh, htab); |
| 50bc7936 | 6956 | if (fdh == NULL |
| 0e1862bb | 6957 | && !bfd_link_executable (info) |
| 50bc7936 AM |
6958 | && (fh->elf.root.type == bfd_link_hash_undefined |
| 6959 | || fh->elf.root.type == bfd_link_hash_undefweak)) | |
| 6960 | { | |
| 908b32fc | 6961 | fdh = make_fdh (info, fh); |
| bb700d78 AM |
6962 | if (fdh == NULL) |
| 6963 | return FALSE; | |
| 50bc7936 | 6964 | } |
| 648cca2c | 6965 | |
| 908b32fc | 6966 | /* Fake function descriptors are made undefweak. If the function |
| 433817dd AM |
6967 | code symbol is strong undefined, make the fake sym the same. |
| 6968 | If the function code symbol is defined, then force the fake | |
| 6969 | descriptor local; We can't support overriding of symbols in a | |
| 6970 | shared library on a fake descriptor. */ | |
| 908b32fc AM |
6971 | |
| 6972 | if (fdh != NULL | |
| 6973 | && fdh->fake | |
| 433817dd | 6974 | && fdh->elf.root.type == bfd_link_hash_undefweak) |
| 908b32fc | 6975 | { |
| 433817dd AM |
6976 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 6977 | { | |
| 6978 | fdh->elf.root.type = bfd_link_hash_undefined; | |
| 6979 | bfd_link_add_undef (&htab->elf.root, &fdh->elf.root); | |
| 6980 | } | |
| 6981 | else if (fh->elf.root.type == bfd_link_hash_defined | |
| 6982 | || fh->elf.root.type == bfd_link_hash_defweak) | |
| 6983 | { | |
| 6984 | _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE); | |
| 6985 | } | |
| 908b32fc AM |
6986 | } |
| 6987 | ||
| 50bc7936 | 6988 | if (fdh != NULL |
| f5385ebf | 6989 | && !fdh->elf.forced_local |
| 0e1862bb | 6990 | && (!bfd_link_executable (info) |
| f5385ebf AM |
6991 | || fdh->elf.def_dynamic |
| 6992 | || fdh->elf.ref_dynamic | |
| 50bc7936 AM |
6993 | || (fdh->elf.root.type == bfd_link_hash_undefweak |
| 6994 | && ELF_ST_VISIBILITY (fdh->elf.other) == STV_DEFAULT))) | |
| 6995 | { | |
| 6996 | if (fdh->elf.dynindx == -1) | |
| c152c796 | 6997 | if (! bfd_elf_link_record_dynamic_symbol (info, &fdh->elf)) |
| 50bc7936 | 6998 | return FALSE; |
| f5385ebf AM |
6999 | fdh->elf.ref_regular |= fh->elf.ref_regular; |
| 7000 | fdh->elf.ref_dynamic |= fh->elf.ref_dynamic; | |
| 7001 | fdh->elf.ref_regular_nonweak |= fh->elf.ref_regular_nonweak; | |
| 7002 | fdh->elf.non_got_ref |= fh->elf.non_got_ref; | |
| 50bc7936 | 7003 | if (ELF_ST_VISIBILITY (fh->elf.other) == STV_DEFAULT) |
| e86ce104 | 7004 | { |
| 40d16e0b | 7005 | move_plt_plist (fh, fdh); |
| f5385ebf | 7006 | fdh->elf.needs_plt = 1; |
| e86ce104 | 7007 | } |
| 50bc7936 | 7008 | fdh->is_func_descriptor = 1; |
| 34814b9f AM |
7009 | fdh->oh = fh; |
| 7010 | fh->oh = fdh; | |
| e86ce104 AM |
7011 | } |
| 7012 | ||
| 50bc7936 AM |
7013 | /* Now that the info is on the function descriptor, clear the |
| 7014 | function code sym info. Any function code syms for which we | |
| 7015 | don't have a definition in a regular file, we force local. | |
| 7016 | This prevents a shared library from exporting syms that have | |
| 7017 | been imported from another library. Function code syms that | |
| 7018 | are really in the library we must leave global to prevent the | |
| 7019 | linker dragging in a definition from a static library. */ | |
| 93f3fa99 AM |
7020 | force_local = (!fh->elf.def_regular |
| 7021 | || fdh == NULL | |
| 7022 | || !fdh->elf.def_regular | |
| 7023 | || fdh->elf.forced_local); | |
| 50bc7936 AM |
7024 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| 7025 | ||
| b34976b6 | 7026 | return TRUE; |
| e86ce104 | 7027 | } |
| 40b8271b | 7028 | |
| a4b6fadd AM |
7029 | static const struct sfpr_def_parms save_res_funcs[] = |
| 7030 | { | |
| 7031 | { "_savegpr0_", 14, 31, savegpr0, savegpr0_tail }, | |
| 7032 | { "_restgpr0_", 14, 29, restgpr0, restgpr0_tail }, | |
| 7033 | { "_restgpr0_", 30, 31, restgpr0, restgpr0_tail }, | |
| 7034 | { "_savegpr1_", 14, 31, savegpr1, savegpr1_tail }, | |
| 7035 | { "_restgpr1_", 14, 31, restgpr1, restgpr1_tail }, | |
| 7036 | { "_savefpr_", 14, 31, savefpr, savefpr0_tail }, | |
| 7037 | { "_restfpr_", 14, 29, restfpr, restfpr0_tail }, | |
| 7038 | { "_restfpr_", 30, 31, restfpr, restfpr0_tail }, | |
| 7039 | { "._savef", 14, 31, savefpr, savefpr1_tail }, | |
| 7040 | { "._restf", 14, 31, restfpr, restfpr1_tail }, | |
| 7041 | { "_savevr_", 20, 31, savevr, savevr_tail }, | |
| 7042 | { "_restvr_", 20, 31, restvr, restvr_tail } | |
| 7043 | }; | |
| 7044 | ||
| e86ce104 | 7045 | /* Called near the start of bfd_elf_size_dynamic_sections. We use |
| 82bd7b59 AM |
7046 | this hook to a) provide some gcc support functions, and b) transfer |
| 7047 | dynamic linking information gathered so far on function code symbol | |
| 7048 | entries, to their corresponding function descriptor symbol entries. */ | |
| deb0e272 | 7049 | |
| b34976b6 | 7050 | static bfd_boolean |
| 4ce794b7 AM |
7051 | ppc64_elf_func_desc_adjust (bfd *obfd ATTRIBUTE_UNUSED, |
| 7052 | struct bfd_link_info *info) | |
| e86ce104 AM |
7053 | { |
| 7054 | struct ppc_link_hash_table *htab; | |
| 7055 | ||
| 7056 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7057 | if (htab == NULL) |
| 7058 | return FALSE; | |
| 7059 | ||
| b32547cd AM |
7060 | /* Provide any missing _save* and _rest* functions. */ |
| 7061 | if (htab->sfpr != NULL) | |
| 7062 | { | |
| 7063 | unsigned int i; | |
| 7064 | ||
| 7065 | htab->sfpr->size = 0; | |
| 7066 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
| 7067 | if (!sfpr_define (info, &save_res_funcs[i], NULL)) | |
| 7068 | return FALSE; | |
| 7069 | if (htab->sfpr->size == 0) | |
| 7070 | htab->sfpr->flags |= SEC_EXCLUDE; | |
| 7071 | } | |
| 7072 | ||
| 7073 | if (bfd_link_relocatable (info)) | |
| 7074 | return TRUE; | |
| 7075 | ||
| 7076 | if (htab->elf.hgot != NULL) | |
| dba6fa9b AM |
7077 | { |
| 7078 | _bfd_elf_link_hash_hide_symbol (info, htab->elf.hgot, TRUE); | |
| 7079 | /* Make .TOC. defined so as to prevent it being made dynamic. | |
| 7080 | The wrong value here is fixed later in ppc64_elf_set_toc. */ | |
| 43417696 AM |
7081 | if (!htab->elf.hgot->def_regular |
| 7082 | || htab->elf.hgot->root.type != bfd_link_hash_defined) | |
| 7083 | { | |
| 7084 | htab->elf.hgot->root.type = bfd_link_hash_defined; | |
| 7085 | htab->elf.hgot->root.u.def.value = 0; | |
| 7086 | htab->elf.hgot->root.u.def.section = bfd_abs_section_ptr; | |
| 7087 | htab->elf.hgot->def_regular = 1; | |
| 7088 | htab->elf.hgot->root.linker_def = 1; | |
| 7089 | } | |
| dba6fa9b | 7090 | htab->elf.hgot->type = STT_OBJECT; |
| dba6fa9b AM |
7091 | htab->elf.hgot->other = ((htab->elf.hgot->other & ~ELF_ST_VISIBILITY (-1)) |
| 7092 | | STV_HIDDEN); | |
| 7093 | } | |
| c66bb0ee | 7094 | |
| 4ce794b7 | 7095 | elf_link_hash_traverse (&htab->elf, func_desc_adjust, info); |
| 805fc799 | 7096 | |
| b34976b6 | 7097 | return TRUE; |
| e86ce104 AM |
7098 | } |
| 7099 | ||
| a345bc8d AM |
7100 | /* Return true if we have dynamic relocs that apply to read-only sections. */ |
| 7101 | ||
| 7102 | static bfd_boolean | |
| 7103 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
| 7104 | { | |
| 7105 | struct ppc_link_hash_entry *eh; | |
| 7106 | struct elf_dyn_relocs *p; | |
| 7107 | ||
| 7108 | eh = (struct ppc_link_hash_entry *) h; | |
| 7109 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 7110 | { | |
| 7111 | asection *s = p->sec->output_section; | |
| 7112 | ||
| 7113 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
| 7114 | return TRUE; | |
| 7115 | } | |
| 7116 | return FALSE; | |
| 7117 | } | |
| 7118 | ||
| e86ce104 AM |
7119 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 7120 | regular object. The current definition is in some section of the | |
| 7121 | dynamic object, but we're not including those sections. We have to | |
| 7122 | change the definition to something the rest of the link can | |
| 7123 | understand. */ | |
| 7124 | ||
| b34976b6 | 7125 | static bfd_boolean |
| 4ce794b7 AM |
7126 | ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 7127 | struct elf_link_hash_entry *h) | |
| e86ce104 AM |
7128 | { |
| 7129 | struct ppc_link_hash_table *htab; | |
| e86ce104 | 7130 | asection *s; |
| e86ce104 AM |
7131 | |
| 7132 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7133 | if (htab == NULL) |
| 7134 | return FALSE; | |
| e86ce104 AM |
7135 | |
| 7136 | /* Deal with function syms. */ | |
| 7137 | if (h->type == STT_FUNC | |
| e054468f | 7138 | || h->type == STT_GNU_IFUNC |
| f5385ebf | 7139 | || h->needs_plt) |
| e86ce104 AM |
7140 | { |
| 7141 | /* Clear procedure linkage table information for any symbol that | |
| 7142 | won't need a .plt entry. */ | |
| 411e1bfb AM |
7143 | struct plt_entry *ent; |
| 7144 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) | |
| 7145 | if (ent->plt.refcount > 0) | |
| 7146 | break; | |
| 8387904d | 7147 | if (ent == NULL |
| e054468f AM |
7148 | || (h->type != STT_GNU_IFUNC |
| 7149 | && (SYMBOL_CALLS_LOCAL (info, h) | |
| 7150 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
| a4b6fadd AM |
7151 | && h->root.type == bfd_link_hash_undefweak))) |
| 7152 | || ((struct ppc_link_hash_entry *) h)->save_res) | |
| 40b8271b | 7153 | { |
| 411e1bfb | 7154 | h->plt.plist = NULL; |
| f5385ebf | 7155 | h->needs_plt = 0; |
| d1eca1e4 | 7156 | h->pointer_equality_needed = 0; |
| 40b8271b | 7157 | } |
| a345bc8d AM |
7158 | else if (abiversion (info->output_bfd) == 2) |
| 7159 | { | |
| d1eca1e4 AM |
7160 | /* Taking a function's address in a read/write section |
| 7161 | doesn't require us to define the function symbol in the | |
| 7162 | executable on a global entry stub. A dynamic reloc can | |
| 7163 | be used instead. */ | |
| 7164 | if (h->pointer_equality_needed | |
| 1009ef28 | 7165 | && h->type != STT_GNU_IFUNC |
| d1eca1e4 AM |
7166 | && !readonly_dynrelocs (h)) |
| 7167 | { | |
| 7168 | h->pointer_equality_needed = 0; | |
| 7169 | h->non_got_ref = 0; | |
| 7170 | } | |
| 7171 | ||
| a345bc8d AM |
7172 | /* After adjust_dynamic_symbol, non_got_ref set in the |
| 7173 | non-shared case means that we have allocated space in | |
| 7174 | .dynbss for the symbol and thus dyn_relocs for this | |
| 7175 | symbol should be discarded. | |
| 7176 | If we get here we know we are making a PLT entry for this | |
| 7177 | symbol, and in an executable we'd normally resolve | |
| 7178 | relocations against this symbol to the PLT entry. Allow | |
| 7179 | dynamic relocs if the reference is weak, and the dynamic | |
| 7180 | relocs will not cause text relocation. */ | |
| d1eca1e4 AM |
7181 | else if (!h->ref_regular_nonweak |
| 7182 | && h->non_got_ref | |
| 7183 | && h->type != STT_GNU_IFUNC | |
| 7184 | && !readonly_dynrelocs (h)) | |
| a345bc8d AM |
7185 | h->non_got_ref = 0; |
| 7186 | ||
| 7187 | /* If making a plt entry, then we don't need copy relocs. */ | |
| 7188 | return TRUE; | |
| 7189 | } | |
| 5bd4f169 | 7190 | } |
| bbd7ec4a | 7191 | else |
| 411e1bfb | 7192 | h->plt.plist = NULL; |
| 5bd4f169 AM |
7193 | |
| 7194 | /* If this is a weak symbol, and there is a real definition, the | |
| 7195 | processor independent code will have arranged for us to see the | |
| 7196 | real definition first, and we can just use the same value. */ | |
| f6e332e6 | 7197 | if (h->u.weakdef != NULL) |
| 5bd4f169 | 7198 | { |
| f6e332e6 AM |
7199 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 7200 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
| 7201 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
| 7202 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
| a23b6845 | 7203 | if (ELIMINATE_COPY_RELOCS) |
| f6e332e6 | 7204 | h->non_got_ref = h->u.weakdef->non_got_ref; |
| b34976b6 | 7205 | return TRUE; |
| 5bd4f169 AM |
7206 | } |
| 7207 | ||
| 5bd4f169 AM |
7208 | /* If we are creating a shared library, we must presume that the |
| 7209 | only references to the symbol are via the global offset table. | |
| 7210 | For such cases we need not do anything here; the relocations will | |
| 7211 | be handled correctly by relocate_section. */ | |
| 0e1862bb | 7212 | if (bfd_link_pic (info)) |
| b34976b6 | 7213 | return TRUE; |
| 5bd4f169 | 7214 | |
| 65f38f15 AM |
7215 | /* If there are no references to this symbol that do not use the |
| 7216 | GOT, we don't need to generate a copy reloc. */ | |
| f5385ebf | 7217 | if (!h->non_got_ref) |
| b34976b6 | 7218 | return TRUE; |
| 65f38f15 | 7219 | |
| b186458a JJ |
7220 | /* Don't generate a copy reloc for symbols defined in the executable. */ |
| 7221 | if (!h->def_dynamic || !h->ref_regular || h->def_regular) | |
| 7222 | return TRUE; | |
| 7223 | ||
| a127494f AM |
7224 | /* If -z nocopyreloc was given, don't generate them either. */ |
| 7225 | if (info->nocopyreloc) | |
| 7226 | { | |
| 7227 | h->non_got_ref = 0; | |
| 7228 | return TRUE; | |
| 7229 | } | |
| 7230 | ||
| a345bc8d AM |
7231 | /* If we didn't find any dynamic relocs in read-only sections, then |
| 7232 | we'll be keeping the dynamic relocs and avoiding the copy reloc. */ | |
| 7233 | if (ELIMINATE_COPY_RELOCS && !readonly_dynrelocs (h)) | |
| 65f38f15 | 7234 | { |
| a345bc8d AM |
7235 | h->non_got_ref = 0; |
| 7236 | return TRUE; | |
| 65f38f15 AM |
7237 | } |
| 7238 | ||
| a127494f AM |
7239 | /* Protected variables do not work with .dynbss. The copy in |
| 7240 | .dynbss won't be used by the shared library with the protected | |
| 7241 | definition for the variable. Text relocations are preferable | |
| 7242 | to an incorrect program. */ | |
| 7243 | if (h->protected_def) | |
| 7244 | { | |
| 7245 | h->non_got_ref = 0; | |
| 7246 | return TRUE; | |
| 7247 | } | |
| 7248 | ||
| 5d35169e | 7249 | if (h->plt.plist != NULL) |
| 97b639ba AM |
7250 | { |
| 7251 | /* We should never get here, but unfortunately there are versions | |
| 7252 | of gcc out there that improperly (for this ABI) put initialized | |
| 7253 | function pointers, vtable refs and suchlike in read-only | |
| 7254 | sections. Allow them to proceed, but warn that this might | |
| 7255 | break at runtime. */ | |
| 25f53a85 | 7256 | info->callbacks->einfo |
| bc30df16 | 7257 | (_("%P: copy reloc against `%T' requires lazy plt linking; " |
| 25f53a85 | 7258 | "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"), |
| 97b639ba AM |
7259 | h->root.root.string); |
| 7260 | } | |
| 5d35169e AM |
7261 | |
| 7262 | /* This is a reference to a symbol defined by a dynamic object which | |
| 7263 | is not a function. */ | |
| 7264 | ||
| 5bd4f169 AM |
7265 | /* We must allocate the symbol in our .dynbss section, which will |
| 7266 | become part of the .bss section of the executable. There will be | |
| 7267 | an entry for this symbol in the .dynsym section. The dynamic | |
| 7268 | object will contain position independent code, so all references | |
| 7269 | from the dynamic object to this symbol will go through the global | |
| 7270 | offset table. The dynamic linker will use the .dynsym entry to | |
| 7271 | determine the address it must put in the global offset table, so | |
| 7272 | both the dynamic object and the regular object will refer to the | |
| 7273 | same memory location for the variable. */ | |
| 5bd4f169 | 7274 | |
| 04c9666a AM |
7275 | /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker |
| 7276 | to copy the initial value out of the dynamic object and into the | |
| 5bd4f169 AM |
7277 | runtime process image. We need to remember the offset into the |
| 7278 | .rela.bss section we are going to use. */ | |
| 1d7e9d18 | 7279 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
| 5bd4f169 | 7280 | { |
| eea6121a | 7281 | htab->relbss->size += sizeof (Elf64_External_Rela); |
| f5385ebf | 7282 | h->needs_copy = 1; |
| 5bd4f169 AM |
7283 | } |
| 7284 | ||
| 4ce794b7 | 7285 | s = htab->dynbss; |
| 5bd4f169 | 7286 | |
| 6cabe1ea | 7287 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
| 5bd4f169 AM |
7288 | } |
| 7289 | ||
| e86ce104 AM |
7290 | /* If given a function descriptor symbol, hide both the function code |
| 7291 | sym and the descriptor. */ | |
| 7292 | static void | |
| 4ce794b7 AM |
7293 | ppc64_elf_hide_symbol (struct bfd_link_info *info, |
| 7294 | struct elf_link_hash_entry *h, | |
| 7295 | bfd_boolean force_local) | |
| e86ce104 | 7296 | { |
| 34814b9f | 7297 | struct ppc_link_hash_entry *eh; |
| e86ce104 AM |
7298 | _bfd_elf_link_hash_hide_symbol (info, h, force_local); |
| 7299 | ||
| 34814b9f AM |
7300 | eh = (struct ppc_link_hash_entry *) h; |
| 7301 | if (eh->is_func_descriptor) | |
| e86ce104 | 7302 | { |
| 34814b9f | 7303 | struct ppc_link_hash_entry *fh = eh->oh; |
| e86ce104 | 7304 | |
| 721956f4 | 7305 | if (fh == NULL) |
| d1329ca3 AM |
7306 | { |
| 7307 | const char *p, *q; | |
| 7308 | struct ppc_link_hash_table *htab; | |
| 7309 | char save; | |
| 7310 | ||
| 7311 | /* We aren't supposed to use alloca in BFD because on | |
| 7312 | systems which do not have alloca the version in libiberty | |
| 7313 | calls xmalloc, which might cause the program to crash | |
| 7314 | when it runs out of memory. This function doesn't have a | |
| 7315 | return status, so there's no way to gracefully return an | |
| 7316 | error. So cheat. We know that string[-1] can be safely | |
| 34814b9f AM |
7317 | accessed; It's either a string in an ELF string table, |
| 7318 | or allocated in an objalloc structure. */ | |
| d1329ca3 | 7319 | |
| 34814b9f | 7320 | p = eh->elf.root.root.string - 1; |
| d1329ca3 AM |
7321 | save = *p; |
| 7322 | *(char *) p = '.'; | |
| 7323 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
7324 | if (htab == NULL) |
| 7325 | return; | |
| 7326 | ||
| 34814b9f AM |
7327 | fh = (struct ppc_link_hash_entry *) |
| 7328 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7329 | *(char *) p = save; |
| 7330 | ||
| 7331 | /* Unfortunately, if it so happens that the string we were | |
| 7332 | looking for was allocated immediately before this string, | |
| 7333 | then we overwrote the string terminator. That's the only | |
| 7334 | reason the lookup should fail. */ | |
| 7335 | if (fh == NULL) | |
| 7336 | { | |
| 34814b9f AM |
7337 | q = eh->elf.root.root.string + strlen (eh->elf.root.root.string); |
| 7338 | while (q >= eh->elf.root.root.string && *q == *p) | |
| d1329ca3 | 7339 | --q, --p; |
| 34814b9f AM |
7340 | if (q < eh->elf.root.root.string && *p == '.') |
| 7341 | fh = (struct ppc_link_hash_entry *) | |
| 7342 | elf_link_hash_lookup (&htab->elf, p, FALSE, FALSE, FALSE); | |
| d1329ca3 AM |
7343 | } |
| 7344 | if (fh != NULL) | |
| 7345 | { | |
| 34814b9f AM |
7346 | eh->oh = fh; |
| 7347 | fh->oh = eh; | |
| d1329ca3 AM |
7348 | } |
| 7349 | } | |
| e86ce104 | 7350 | if (fh != NULL) |
| 34814b9f | 7351 | _bfd_elf_link_hash_hide_symbol (info, &fh->elf, force_local); |
| e86ce104 AM |
7352 | } |
| 7353 | } | |
| 7354 | ||
| 411e1bfb | 7355 | static bfd_boolean |
| 8843416a AM |
7356 | get_sym_h (struct elf_link_hash_entry **hp, |
| 7357 | Elf_Internal_Sym **symp, | |
| 7358 | asection **symsecp, | |
| f961d9dd | 7359 | unsigned char **tls_maskp, |
| 8843416a AM |
7360 | Elf_Internal_Sym **locsymsp, |
| 7361 | unsigned long r_symndx, | |
| 7362 | bfd *ibfd) | |
| 411e1bfb | 7363 | { |
| 0ffa91dd | 7364 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); |
| 411e1bfb AM |
7365 | |
| 7366 | if (r_symndx >= symtab_hdr->sh_info) | |
| 7367 | { | |
| 7368 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
| 7369 | struct elf_link_hash_entry *h; | |
| 7370 | ||
| 7371 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
| b31867b6 | 7372 | h = elf_follow_link (h); |
| 411e1bfb AM |
7373 | |
| 7374 | if (hp != NULL) | |
| 7375 | *hp = h; | |
| 7376 | ||
| 7377 | if (symp != NULL) | |
| 7378 | *symp = NULL; | |
| 7379 | ||
| 7380 | if (symsecp != NULL) | |
| 7381 | { | |
| 7382 | asection *symsec = NULL; | |
| 7383 | if (h->root.type == bfd_link_hash_defined | |
| 7384 | || h->root.type == bfd_link_hash_defweak) | |
| 7385 | symsec = h->root.u.def.section; | |
| 7386 | *symsecp = symsec; | |
| 7387 | } | |
| 7388 | ||
| e7b938ca | 7389 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7390 | { |
| 7391 | struct ppc_link_hash_entry *eh; | |
| 7392 | ||
| 7393 | eh = (struct ppc_link_hash_entry *) h; | |
| e7b938ca | 7394 | *tls_maskp = &eh->tls_mask; |
| 411e1bfb AM |
7395 | } |
| 7396 | } | |
| 7397 | else | |
| 7398 | { | |
| 7399 | Elf_Internal_Sym *sym; | |
| 7400 | Elf_Internal_Sym *locsyms = *locsymsp; | |
| 7401 | ||
| 7402 | if (locsyms == NULL) | |
| 7403 | { | |
| 7404 | locsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
| 7405 | if (locsyms == NULL) | |
| 7406 | locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr, | |
| 7407 | symtab_hdr->sh_info, | |
| 7408 | 0, NULL, NULL, NULL); | |
| 7409 | if (locsyms == NULL) | |
| 7410 | return FALSE; | |
| 7411 | *locsymsp = locsyms; | |
| 7412 | } | |
| 7413 | sym = locsyms + r_symndx; | |
| 7414 | ||
| 7415 | if (hp != NULL) | |
| 7416 | *hp = NULL; | |
| 7417 | ||
| 7418 | if (symp != NULL) | |
| 7419 | *symp = sym; | |
| 7420 | ||
| 7421 | if (symsecp != NULL) | |
| cb33740c | 7422 | *symsecp = bfd_section_from_elf_index (ibfd, sym->st_shndx); |
| 411e1bfb | 7423 | |
| e7b938ca | 7424 | if (tls_maskp != NULL) |
| 411e1bfb AM |
7425 | { |
| 7426 | struct got_entry **lgot_ents; | |
| f961d9dd | 7427 | unsigned char *tls_mask; |
| 411e1bfb | 7428 | |
| e7b938ca | 7429 | tls_mask = NULL; |
| 411e1bfb AM |
7430 | lgot_ents = elf_local_got_ents (ibfd); |
| 7431 | if (lgot_ents != NULL) | |
| 7432 | { | |
| e054468f AM |
7433 | struct plt_entry **local_plt = (struct plt_entry **) |
| 7434 | (lgot_ents + symtab_hdr->sh_info); | |
| f961d9dd | 7435 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 7436 | (local_plt + symtab_hdr->sh_info); |
| e7b938ca | 7437 | tls_mask = &lgot_masks[r_symndx]; |
| 411e1bfb | 7438 | } |
| e7b938ca | 7439 | *tls_maskp = tls_mask; |
| 411e1bfb AM |
7440 | } |
| 7441 | } | |
| 7442 | return TRUE; | |
| 7443 | } | |
| 7444 | ||
| e7b938ca | 7445 | /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on |
| 951fd09b | 7446 | error, 2 on a toc GD type suitable for optimization, 3 on a toc LD |
| ad8e1ba5 | 7447 | type suitable for optimization, and 1 otherwise. */ |
| 951fd09b AM |
7448 | |
| 7449 | static int | |
| f961d9dd | 7450 | get_tls_mask (unsigned char **tls_maskp, |
| 3a71aa26 AM |
7451 | unsigned long *toc_symndx, |
| 7452 | bfd_vma *toc_addend, | |
| 0d4792f7 | 7453 | Elf_Internal_Sym **locsymsp, |
| 3a71aa26 AM |
7454 | const Elf_Internal_Rela *rel, |
| 7455 | bfd *ibfd) | |
| 411e1bfb AM |
7456 | { |
| 7457 | unsigned long r_symndx; | |
| 0d4792f7 | 7458 | int next_r; |
| 411e1bfb AM |
7459 | struct elf_link_hash_entry *h; |
| 7460 | Elf_Internal_Sym *sym; | |
| 7461 | asection *sec; | |
| 7462 | bfd_vma off; | |
| 7463 | ||
| 7464 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| e7b938ca | 7465 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) |
| 951fd09b | 7466 | return 0; |
| 411e1bfb | 7467 | |
| e7b938ca | 7468 | if ((*tls_maskp != NULL && **tls_maskp != 0) |
| 411e1bfb | 7469 | || sec == NULL |
| 6bee8834 | 7470 | || ppc64_elf_section_data (sec) == NULL |
| 7c8fe5c4 | 7471 | || ppc64_elf_section_data (sec)->sec_type != sec_toc) |
| 951fd09b | 7472 | return 1; |
| 411e1bfb AM |
7473 | |
| 7474 | /* Look inside a TOC section too. */ | |
| 7475 | if (h != NULL) | |
| 7476 | { | |
| 7477 | BFD_ASSERT (h->root.type == bfd_link_hash_defined); | |
| 7478 | off = h->root.u.def.value; | |
| 7479 | } | |
| 7480 | else | |
| 7481 | off = sym->st_value; | |
| 7482 | off += rel->r_addend; | |
| 7483 | BFD_ASSERT (off % 8 == 0); | |
| 3a71aa26 AM |
7484 | r_symndx = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8]; |
| 7485 | next_r = ppc64_elf_section_data (sec)->u.toc.symndx[off / 8 + 1]; | |
| 0d4792f7 AM |
7486 | if (toc_symndx != NULL) |
| 7487 | *toc_symndx = r_symndx; | |
| 3a71aa26 AM |
7488 | if (toc_addend != NULL) |
| 7489 | *toc_addend = ppc64_elf_section_data (sec)->u.toc.add[off / 8]; | |
| 7490 | if (!get_sym_h (&h, &sym, &sec, tls_maskp, locsymsp, r_symndx, ibfd)) | |
| 7491 | return 0; | |
| 854b41e7 | 7492 | if ((h == NULL || is_static_defined (h)) |
| 0d4792f7 AM |
7493 | && (next_r == -1 || next_r == -2)) |
| 7494 | return 1 - next_r; | |
| 951fd09b | 7495 | return 1; |
| 411e1bfb AM |
7496 | } |
| 7497 | ||
| 3b421ab3 AM |
7498 | /* Find (or create) an entry in the tocsave hash table. */ |
| 7499 | ||
| 7500 | static struct tocsave_entry * | |
| 7501 | tocsave_find (struct ppc_link_hash_table *htab, | |
| 7502 | enum insert_option insert, | |
| 7503 | Elf_Internal_Sym **local_syms, | |
| 7504 | const Elf_Internal_Rela *irela, | |
| 7505 | bfd *ibfd) | |
| 7506 | { | |
| 7507 | unsigned long r_indx; | |
| 7508 | struct elf_link_hash_entry *h; | |
| 7509 | Elf_Internal_Sym *sym; | |
| 7510 | struct tocsave_entry ent, *p; | |
| 7511 | hashval_t hash; | |
| 7512 | struct tocsave_entry **slot; | |
| 7513 | ||
| 7514 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 7515 | if (!get_sym_h (&h, &sym, &ent.sec, NULL, local_syms, r_indx, ibfd)) | |
| 7516 | return NULL; | |
| 7517 | if (ent.sec == NULL || ent.sec->output_section == NULL) | |
| 7518 | { | |
| 7519 | (*_bfd_error_handler) | |
| 7520 | (_("%B: undefined symbol on R_PPC64_TOCSAVE relocation")); | |
| 7521 | return NULL; | |
| 7522 | } | |
| 7523 | ||
| 7524 | if (h != NULL) | |
| 7525 | ent.offset = h->root.u.def.value; | |
| 7526 | else | |
| 7527 | ent.offset = sym->st_value; | |
| 7528 | ent.offset += irela->r_addend; | |
| 7529 | ||
| 7530 | hash = tocsave_htab_hash (&ent); | |
| 7531 | slot = ((struct tocsave_entry **) | |
| 7532 | htab_find_slot_with_hash (htab->tocsave_htab, &ent, hash, insert)); | |
| 7533 | if (slot == NULL) | |
| 7534 | return NULL; | |
| 7535 | ||
| 7536 | if (*slot == NULL) | |
| 7537 | { | |
| 7538 | p = (struct tocsave_entry *) bfd_alloc (ibfd, sizeof (*p)); | |
| 7539 | if (p == NULL) | |
| 7540 | return NULL; | |
| 7541 | *p = ent; | |
| 7542 | *slot = p; | |
| 7543 | } | |
| 7544 | return *slot; | |
| 7545 | } | |
| 7546 | ||
| 754021d0 | 7547 | /* Adjust all global syms defined in opd sections. In gcc generated |
| 8387904d | 7548 | code for the old ABI, these will already have been done. */ |
| 754021d0 AM |
7549 | |
| 7550 | static bfd_boolean | |
| 7551 | adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 7552 | { | |
| 7553 | struct ppc_link_hash_entry *eh; | |
| 7554 | asection *sym_sec; | |
| 74f0fb50 | 7555 | struct _opd_sec_data *opd; |
| 754021d0 AM |
7556 | |
| 7557 | if (h->root.type == bfd_link_hash_indirect) | |
| 7558 | return TRUE; | |
| 7559 | ||
| 754021d0 AM |
7560 | if (h->root.type != bfd_link_hash_defined |
| 7561 | && h->root.type != bfd_link_hash_defweak) | |
| 7562 | return TRUE; | |
| 7563 | ||
| 7564 | eh = (struct ppc_link_hash_entry *) h; | |
| 7565 | if (eh->adjust_done) | |
| 7566 | return TRUE; | |
| 7567 | ||
| 7568 | sym_sec = eh->elf.root.u.def.section; | |
| 74f0fb50 AM |
7569 | opd = get_opd_info (sym_sec); |
| 7570 | if (opd != NULL && opd->adjust != NULL) | |
| 754021d0 | 7571 | { |
| 51aecdc5 | 7572 | long adjust = opd->adjust[OPD_NDX (eh->elf.root.u.def.value)]; |
| 4025353c AM |
7573 | if (adjust == -1) |
| 7574 | { | |
| 7575 | /* This entry has been deleted. */ | |
| b3fac117 | 7576 | asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section; |
| 81688140 AM |
7577 | if (dsec == NULL) |
| 7578 | { | |
| 7579 | for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next) | |
| dbaa2011 | 7580 | if (discarded_section (dsec)) |
| 81688140 | 7581 | { |
| b3fac117 | 7582 | ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec; |
| 81688140 AM |
7583 | break; |
| 7584 | } | |
| 7585 | } | |
| 4025353c | 7586 | eh->elf.root.u.def.value = 0; |
| 81688140 | 7587 | eh->elf.root.u.def.section = dsec; |
| 4025353c AM |
7588 | } |
| 7589 | else | |
| 7590 | eh->elf.root.u.def.value += adjust; | |
| 754021d0 AM |
7591 | eh->adjust_done = 1; |
| 7592 | } | |
| 7593 | return TRUE; | |
| 7594 | } | |
| 7595 | ||
| 8c1d1bb8 | 7596 | /* Handles decrementing dynamic reloc counts for the reloc specified by |
| 19e08130 | 7597 | R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM |
| 8c1d1bb8 AM |
7598 | have already been determined. */ |
| 7599 | ||
| 7600 | static bfd_boolean | |
| 7601 | dec_dynrel_count (bfd_vma r_info, | |
| 7602 | asection *sec, | |
| 7603 | struct bfd_link_info *info, | |
| 7604 | Elf_Internal_Sym **local_syms, | |
| 7605 | struct elf_link_hash_entry *h, | |
| 19e08130 | 7606 | Elf_Internal_Sym *sym) |
| 8c1d1bb8 AM |
7607 | { |
| 7608 | enum elf_ppc64_reloc_type r_type; | |
| 19e08130 | 7609 | asection *sym_sec = NULL; |
| 8c1d1bb8 AM |
7610 | |
| 7611 | /* Can this reloc be dynamic? This switch, and later tests here | |
| 7612 | should be kept in sync with the code in check_relocs. */ | |
| 7613 | r_type = ELF64_R_TYPE (r_info); | |
| 7614 | switch (r_type) | |
| 7615 | { | |
| 7616 | default: | |
| 7617 | return TRUE; | |
| 7618 | ||
| 7619 | case R_PPC64_TPREL16: | |
| 7620 | case R_PPC64_TPREL16_LO: | |
| 7621 | case R_PPC64_TPREL16_HI: | |
| 7622 | case R_PPC64_TPREL16_HA: | |
| 7623 | case R_PPC64_TPREL16_DS: | |
| 7624 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
7625 | case R_PPC64_TPREL16_HIGH: |
| 7626 | case R_PPC64_TPREL16_HIGHA: | |
| 8c1d1bb8 AM |
7627 | case R_PPC64_TPREL16_HIGHER: |
| 7628 | case R_PPC64_TPREL16_HIGHERA: | |
| 7629 | case R_PPC64_TPREL16_HIGHEST: | |
| 7630 | case R_PPC64_TPREL16_HIGHESTA: | |
| 0e1862bb | 7631 | if (!bfd_link_pic (info)) |
| 8c1d1bb8 AM |
7632 | return TRUE; |
| 7633 | ||
| 7634 | case R_PPC64_TPREL64: | |
| 7635 | case R_PPC64_DTPMOD64: | |
| 7636 | case R_PPC64_DTPREL64: | |
| 7637 | case R_PPC64_ADDR64: | |
| 7638 | case R_PPC64_REL30: | |
| 7639 | case R_PPC64_REL32: | |
| 7640 | case R_PPC64_REL64: | |
| 7641 | case R_PPC64_ADDR14: | |
| 7642 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 7643 | case R_PPC64_ADDR14_BRTAKEN: | |
| 7644 | case R_PPC64_ADDR16: | |
| 7645 | case R_PPC64_ADDR16_DS: | |
| 7646 | case R_PPC64_ADDR16_HA: | |
| 7647 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
7648 | case R_PPC64_ADDR16_HIGH: |
| 7649 | case R_PPC64_ADDR16_HIGHA: | |
| 8c1d1bb8 AM |
7650 | case R_PPC64_ADDR16_HIGHER: |
| 7651 | case R_PPC64_ADDR16_HIGHERA: | |
| 7652 | case R_PPC64_ADDR16_HIGHEST: | |
| 7653 | case R_PPC64_ADDR16_HIGHESTA: | |
| 7654 | case R_PPC64_ADDR16_LO: | |
| 7655 | case R_PPC64_ADDR16_LO_DS: | |
| 7656 | case R_PPC64_ADDR24: | |
| 7657 | case R_PPC64_ADDR32: | |
| 7658 | case R_PPC64_UADDR16: | |
| 7659 | case R_PPC64_UADDR32: | |
| 7660 | case R_PPC64_UADDR64: | |
| 7661 | case R_PPC64_TOC: | |
| 7662 | break; | |
| 7663 | } | |
| 7664 | ||
| 7665 | if (local_syms != NULL) | |
| 7666 | { | |
| 7667 | unsigned long r_symndx; | |
| 8c1d1bb8 AM |
7668 | bfd *ibfd = sec->owner; |
| 7669 | ||
| 7670 | r_symndx = ELF64_R_SYM (r_info); | |
| 7671 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, local_syms, r_symndx, ibfd)) | |
| 7672 | return FALSE; | |
| 7673 | } | |
| 7674 | ||
| 0e1862bb | 7675 | if ((bfd_link_pic (info) |
| 1d483afe | 7676 | && (must_be_dyn_reloc (info, r_type) |
| 8c1d1bb8 | 7677 | || (h != NULL |
| 198f1157 | 7678 | && (!SYMBOLIC_BIND (info, h) |
| 8c1d1bb8 AM |
7679 | || h->root.type == bfd_link_hash_defweak |
| 7680 | || !h->def_regular)))) | |
| 7681 | || (ELIMINATE_COPY_RELOCS | |
| 0e1862bb | 7682 | && !bfd_link_pic (info) |
| 8c1d1bb8 AM |
7683 | && h != NULL |
| 7684 | && (h->root.type == bfd_link_hash_defweak | |
| 7685 | || !h->def_regular))) | |
| 7686 | ; | |
| 7687 | else | |
| 7688 | return TRUE; | |
| 7689 | ||
| 7690 | if (h != NULL) | |
| 6edfbbad | 7691 | { |
| 19e08130 AM |
7692 | struct elf_dyn_relocs *p; |
| 7693 | struct elf_dyn_relocs **pp; | |
| 7694 | pp = &((struct ppc_link_hash_entry *) h)->dyn_relocs; | |
| 7695 | ||
| 7696 | /* elf_gc_sweep may have already removed all dyn relocs associated | |
| 7697 | with local syms for a given section. Also, symbol flags are | |
| 7698 | changed by elf_gc_sweep_symbol, confusing the test above. Don't | |
| 7699 | report a dynreloc miscount. */ | |
| 7700 | if (*pp == NULL && info->gc_sections) | |
| 7701 | return TRUE; | |
| 7702 | ||
| 7703 | while ((p = *pp) != NULL) | |
| 60124e18 | 7704 | { |
| 19e08130 AM |
7705 | if (p->sec == sec) |
| 7706 | { | |
| 7707 | if (!must_be_dyn_reloc (info, r_type)) | |
| 7708 | p->pc_count -= 1; | |
| 7709 | p->count -= 1; | |
| 7710 | if (p->count == 0) | |
| 7711 | *pp = p->next; | |
| 7712 | return TRUE; | |
| 7713 | } | |
| 7714 | pp = &p->next; | |
| 60124e18 | 7715 | } |
| 6edfbbad | 7716 | } |
| 19e08130 AM |
7717 | else |
| 7718 | { | |
| 7719 | struct ppc_dyn_relocs *p; | |
| 7720 | struct ppc_dyn_relocs **pp; | |
| 7721 | void *vpp; | |
| 7722 | bfd_boolean is_ifunc; | |
| 8c1d1bb8 | 7723 | |
| 19e08130 AM |
7724 | if (local_syms == NULL) |
| 7725 | sym_sec = bfd_section_from_elf_index (sec->owner, sym->st_shndx); | |
| 7726 | if (sym_sec == NULL) | |
| 7727 | sym_sec = sec; | |
| c57da1a7 | 7728 | |
| 19e08130 AM |
7729 | vpp = &elf_section_data (sym_sec)->local_dynrel; |
| 7730 | pp = (struct ppc_dyn_relocs **) vpp; | |
| 7731 | ||
| 7732 | if (*pp == NULL && info->gc_sections) | |
| 7733 | return TRUE; | |
| 7734 | ||
| 7735 | is_ifunc = ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC; | |
| 7736 | while ((p = *pp) != NULL) | |
| 8c1d1bb8 | 7737 | { |
| 19e08130 AM |
7738 | if (p->sec == sec && p->ifunc == is_ifunc) |
| 7739 | { | |
| 7740 | p->count -= 1; | |
| 7741 | if (p->count == 0) | |
| 7742 | *pp = p->next; | |
| 7743 | return TRUE; | |
| 7744 | } | |
| 7745 | pp = &p->next; | |
| 8c1d1bb8 | 7746 | } |
| 8c1d1bb8 AM |
7747 | } |
| 7748 | ||
| 8de848d8 | 7749 | info->callbacks->einfo (_("%P: dynreloc miscount for %B, section %A\n"), |
| 25f53a85 | 7750 | sec->owner, sec); |
| 8c1d1bb8 AM |
7751 | bfd_set_error (bfd_error_bad_value); |
| 7752 | return FALSE; | |
| 7753 | } | |
| 7754 | ||
| 754021d0 AM |
7755 | /* Remove unused Official Procedure Descriptor entries. Currently we |
| 7756 | only remove those associated with functions in discarded link-once | |
| 7757 | sections, or weakly defined functions that have been overridden. It | |
| 7758 | would be possible to remove many more entries for statically linked | |
| 7759 | applications. */ | |
| 7760 | ||
| b34976b6 | 7761 | bfd_boolean |
| e7d1c40c | 7762 | ppc64_elf_edit_opd (struct bfd_link_info *info) |
| 1e2f5b6e AM |
7763 | { |
| 7764 | bfd *ibfd; | |
| 754021d0 | 7765 | bfd_boolean some_edited = FALSE; |
| 3f764659 | 7766 | asection *need_pad = NULL; |
| e7d1c40c AM |
7767 | struct ppc_link_hash_table *htab; |
| 7768 | ||
| 7769 | htab = ppc_hash_table (info); | |
| 7770 | if (htab == NULL) | |
| 7771 | return FALSE; | |
| 1e2f5b6e | 7772 | |
| c72f2fb2 | 7773 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 1e2f5b6e AM |
7774 | { |
| 7775 | asection *sec; | |
| 7776 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 7777 | Elf_Internal_Shdr *symtab_hdr; | |
| 6cdc0ccc | 7778 | Elf_Internal_Sym *local_syms; |
| 74f0fb50 | 7779 | struct _opd_sec_data *opd; |
| 51aecdc5 | 7780 | bfd_boolean need_edit, add_aux_fields, broken; |
| 3f764659 | 7781 | bfd_size_type cnt_16b = 0; |
| 1e2f5b6e | 7782 | |
| 854b41e7 AM |
7783 | if (!is_ppc64_elf (ibfd)) |
| 7784 | continue; | |
| 7785 | ||
| 1e2f5b6e | 7786 | sec = bfd_get_section_by_name (ibfd, ".opd"); |
| 46de2a7c | 7787 | if (sec == NULL || sec->size == 0) |
| 1e2f5b6e AM |
7788 | continue; |
| 7789 | ||
| dbaa2011 | 7790 | if (sec->sec_info_type == SEC_INFO_TYPE_JUST_SYMS) |
| 4b85d634 AM |
7791 | continue; |
| 7792 | ||
| 1e2f5b6e AM |
7793 | if (sec->output_section == bfd_abs_section_ptr) |
| 7794 | continue; | |
| 7795 | ||
| 7796 | /* Look through the section relocs. */ | |
| 7797 | if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0) | |
| 7798 | continue; | |
| 7799 | ||
| 6cdc0ccc | 7800 | local_syms = NULL; |
| 0ffa91dd | 7801 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 1e2f5b6e AM |
7802 | |
| 7803 | /* Read the relocations. */ | |
| 4ce794b7 | 7804 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 45d6a902 | 7805 | info->keep_memory); |
| 1e2f5b6e | 7806 | if (relstart == NULL) |
| b34976b6 | 7807 | return FALSE; |
| 1e2f5b6e AM |
7808 | |
| 7809 | /* First run through the relocs to check they are sane, and to | |
| 7810 | determine whether we need to edit this opd section. */ | |
| b34976b6 | 7811 | need_edit = FALSE; |
| 51aecdc5 | 7812 | broken = FALSE; |
| 3f764659 | 7813 | need_pad = sec; |
| 1e2f5b6e | 7814 | relend = relstart + sec->reloc_count; |
| 50bc7936 | 7815 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7816 | { |
| 04c9666a | 7817 | enum elf_ppc64_reloc_type r_type; |
| 1e2f5b6e AM |
7818 | unsigned long r_symndx; |
| 7819 | asection *sym_sec; | |
| 7820 | struct elf_link_hash_entry *h; | |
| 7821 | Elf_Internal_Sym *sym; | |
| 51aecdc5 | 7822 | bfd_vma offset; |
| 1e2f5b6e | 7823 | |
| 51aecdc5 | 7824 | /* .opd contains an array of 16 or 24 byte entries. We're |
| 1e2f5b6e AM |
7825 | only interested in the reloc pointing to a function entry |
| 7826 | point. */ | |
| 51aecdc5 AM |
7827 | offset = rel->r_offset; |
| 7828 | if (rel + 1 == relend | |
| 7829 | || rel[1].r_offset != offset + 8) | |
| 1e2f5b6e AM |
7830 | { |
| 7831 | /* If someone messes with .opd alignment then after a | |
| 7832 | "ld -r" we might have padding in the middle of .opd. | |
| 7833 | Also, there's nothing to prevent someone putting | |
| 7834 | something silly in .opd with the assembler. No .opd | |
| b34976b6 | 7835 | optimization for them! */ |
| 3f764659 | 7836 | broken_opd: |
| 1e2f5b6e | 7837 | (*_bfd_error_handler) |
| d003868e | 7838 | (_("%B: .opd is not a regular array of opd entries"), ibfd); |
| 51aecdc5 | 7839 | broken = TRUE; |
| 1e2f5b6e AM |
7840 | break; |
| 7841 | } | |
| 7842 | ||
| 50bc7936 AM |
7843 | if ((r_type = ELF64_R_TYPE (rel->r_info)) != R_PPC64_ADDR64 |
| 7844 | || (r_type = ELF64_R_TYPE ((rel + 1)->r_info)) != R_PPC64_TOC) | |
| 7845 | { | |
| 7846 | (*_bfd_error_handler) | |
| d003868e AM |
7847 | (_("%B: unexpected reloc type %u in .opd section"), |
| 7848 | ibfd, r_type); | |
| 51aecdc5 | 7849 | broken = TRUE; |
| 50bc7936 AM |
7850 | break; |
| 7851 | } | |
| 7852 | ||
| 1e2f5b6e | 7853 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 411e1bfb AM |
7854 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 7855 | r_symndx, ibfd)) | |
| 50bc7936 | 7856 | goto error_ret; |
| 1e2f5b6e AM |
7857 | |
| 7858 | if (sym_sec == NULL || sym_sec->owner == NULL) | |
| 7859 | { | |
| 411e1bfb AM |
7860 | const char *sym_name; |
| 7861 | if (h != NULL) | |
| 7862 | sym_name = h->root.root.string; | |
| 7863 | else | |
| 26c61ae5 L |
7864 | sym_name = bfd_elf_sym_name (ibfd, symtab_hdr, sym, |
| 7865 | sym_sec); | |
| 411e1bfb | 7866 | |
| 1e2f5b6e | 7867 | (*_bfd_error_handler) |
| d003868e AM |
7868 | (_("%B: undefined sym `%s' in .opd section"), |
| 7869 | ibfd, sym_name); | |
| 51aecdc5 | 7870 | broken = TRUE; |
| 1e2f5b6e AM |
7871 | break; |
| 7872 | } | |
| 7873 | ||
| 51020317 AM |
7874 | /* opd entries are always for functions defined in the |
| 7875 | current input bfd. If the symbol isn't defined in the | |
| 7876 | input bfd, then we won't be using the function in this | |
| 7877 | bfd; It must be defined in a linkonce section in another | |
| 7878 | bfd, or is weak. It's also possible that we are | |
| 7879 | discarding the function due to a linker script /DISCARD/, | |
| 7880 | which we test for via the output_section. */ | |
| 7881 | if (sym_sec->owner != ibfd | |
| 7882 | || sym_sec->output_section == bfd_abs_section_ptr) | |
| b34976b6 | 7883 | need_edit = TRUE; |
| 1e2f5b6e | 7884 | |
| 50bc7936 | 7885 | rel += 2; |
| 51aecdc5 AM |
7886 | if (rel + 1 == relend |
| 7887 | || (rel + 2 < relend | |
| 7888 | && ELF64_R_TYPE (rel[2].r_info) == R_PPC64_TOC)) | |
| 7889 | ++rel; | |
| 7890 | ||
| 7891 | if (rel == relend) | |
| 3f764659 JJ |
7892 | { |
| 7893 | if (sec->size == offset + 24) | |
| 7894 | { | |
| 7895 | need_pad = NULL; | |
| 7896 | break; | |
| 7897 | } | |
| 51aecdc5 | 7898 | if (sec->size == offset + 16) |
| 3f764659 JJ |
7899 | { |
| 7900 | cnt_16b++; | |
| 7901 | break; | |
| 7902 | } | |
| 7903 | goto broken_opd; | |
| 7904 | } | |
| 3f764659 JJ |
7905 | else if (rel + 1 < relend |
| 7906 | && ELF64_R_TYPE (rel[0].r_info) == R_PPC64_ADDR64 | |
| 7907 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOC) | |
| 7908 | { | |
| 51aecdc5 AM |
7909 | if (rel[0].r_offset == offset + 16) |
| 7910 | cnt_16b++; | |
| 7911 | else if (rel[0].r_offset != offset + 24) | |
| 7912 | goto broken_opd; | |
| 3f764659 JJ |
7913 | } |
| 7914 | else | |
| 7915 | goto broken_opd; | |
| 1e2f5b6e AM |
7916 | } |
| 7917 | ||
| e7d1c40c | 7918 | add_aux_fields = htab->params->non_overlapping_opd && cnt_16b > 0; |
| 3f764659 | 7919 | |
| 51aecdc5 | 7920 | if (!broken && (need_edit || add_aux_fields)) |
| 1e2f5b6e AM |
7921 | { |
| 7922 | Elf_Internal_Rela *write_rel; | |
| d4730f92 | 7923 | Elf_Internal_Shdr *rel_hdr; |
| 1e2f5b6e | 7924 | bfd_byte *rptr, *wptr; |
| 983bddc8 | 7925 | bfd_byte *new_contents; |
| 74f0fb50 AM |
7926 | bfd_size_type amt; |
| 7927 | ||
| 983bddc8 | 7928 | new_contents = NULL; |
| 51aecdc5 | 7929 | amt = OPD_NDX (sec->size) * sizeof (long); |
| 74f0fb50 | 7930 | opd = &ppc64_elf_section_data (sec)->u.opd; |
| 33c0ec9d | 7931 | opd->adjust = bfd_zalloc (sec->owner, amt); |
| 74f0fb50 AM |
7932 | if (opd->adjust == NULL) |
| 7933 | return FALSE; | |
| 7934 | ppc64_elf_section_data (sec)->sec_type = sec_opd; | |
| 1e2f5b6e AM |
7935 | |
| 7936 | /* This seems a waste of time as input .opd sections are all | |
| 7937 | zeros as generated by gcc, but I suppose there's no reason | |
| 7938 | this will always be so. We might start putting something in | |
| 7939 | the third word of .opd entries. */ | |
| 7940 | if ((sec->flags & SEC_IN_MEMORY) == 0) | |
| 7941 | { | |
| eea6121a AM |
7942 | bfd_byte *loc; |
| 7943 | if (!bfd_malloc_and_get_section (ibfd, sec, &loc)) | |
| 6cdc0ccc | 7944 | { |
| eea6121a AM |
7945 | if (loc != NULL) |
| 7946 | free (loc); | |
| 50bc7936 | 7947 | error_ret: |
| 6cdc0ccc AM |
7948 | if (local_syms != NULL |
| 7949 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 7950 | free (local_syms); | |
| 6cdc0ccc AM |
7951 | if (elf_section_data (sec)->relocs != relstart) |
| 7952 | free (relstart); | |
| b34976b6 | 7953 | return FALSE; |
| 6cdc0ccc | 7954 | } |
| 1e2f5b6e AM |
7955 | sec->contents = loc; |
| 7956 | sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 7957 | } | |
| 7958 | ||
| 7959 | elf_section_data (sec)->relocs = relstart; | |
| 7960 | ||
| 3f764659 | 7961 | new_contents = sec->contents; |
| 3f764659 JJ |
7962 | if (add_aux_fields) |
| 7963 | { | |
| 7964 | new_contents = bfd_malloc (sec->size + cnt_16b * 8); | |
| 7965 | if (new_contents == NULL) | |
| 7966 | return FALSE; | |
| 51aecdc5 | 7967 | need_pad = NULL; |
| 3f764659 | 7968 | } |
| b4f4e59f AM |
7969 | wptr = new_contents; |
| 7970 | rptr = sec->contents; | |
| 1e2f5b6e | 7971 | write_rel = relstart; |
| 51aecdc5 | 7972 | for (rel = relstart; rel < relend; ) |
| 1e2f5b6e | 7973 | { |
| 50bc7936 AM |
7974 | unsigned long r_symndx; |
| 7975 | asection *sym_sec; | |
| 7976 | struct elf_link_hash_entry *h; | |
| 51aecdc5 | 7977 | struct ppc_link_hash_entry *fdh = NULL; |
| 50bc7936 | 7978 | Elf_Internal_Sym *sym; |
| 51aecdc5 AM |
7979 | long opd_ent_size; |
| 7980 | Elf_Internal_Rela *next_rel; | |
| 7981 | bfd_boolean skip; | |
| 50bc7936 AM |
7982 | |
| 7983 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 7984 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| d37c89e5 | 7985 | r_symndx, ibfd)) |
| 50bc7936 AM |
7986 | goto error_ret; |
| 7987 | ||
| 51aecdc5 AM |
7988 | next_rel = rel + 2; |
| 7989 | if (next_rel + 1 == relend | |
| 7990 | || (next_rel + 2 < relend | |
| 7991 | && ELF64_R_TYPE (next_rel[2].r_info) == R_PPC64_TOC)) | |
| 7992 | ++next_rel; | |
| 7993 | ||
| 7994 | /* See if the .opd entry is full 24 byte or | |
| 7995 | 16 byte (with fd_aux entry overlapped with next | |
| 7996 | fd_func). */ | |
| 7997 | opd_ent_size = 24; | |
| 7998 | if (next_rel == relend) | |
| 1e2f5b6e | 7999 | { |
| 51aecdc5 | 8000 | if (sec->size == rel->r_offset + 16) |
| 3f764659 | 8001 | opd_ent_size = 16; |
| 51aecdc5 AM |
8002 | } |
| 8003 | else if (next_rel->r_offset == rel->r_offset + 16) | |
| 8004 | opd_ent_size = 16; | |
| 3f764659 | 8005 | |
| 51aecdc5 AM |
8006 | if (h != NULL |
| 8007 | && h->root.root.string[0] == '.') | |
| 8008 | { | |
| 8009 | fdh = lookup_fdh ((struct ppc_link_hash_entry *) h, htab); | |
| 8010 | if (fdh != NULL | |
| 8011 | && fdh->elf.root.type != bfd_link_hash_defined | |
| 8012 | && fdh->elf.root.type != bfd_link_hash_defweak) | |
| 8013 | fdh = NULL; | |
| 8014 | } | |
| 1e2f5b6e | 8015 | |
| 51aecdc5 AM |
8016 | skip = (sym_sec->owner != ibfd |
| 8017 | || sym_sec->output_section == bfd_abs_section_ptr); | |
| 8018 | if (skip) | |
| 8019 | { | |
| 8020 | if (fdh != NULL && sym_sec->owner == ibfd) | |
| a4aa0fb7 | 8021 | { |
| 51aecdc5 AM |
8022 | /* Arrange for the function descriptor sym |
| 8023 | to be dropped. */ | |
| 8024 | fdh->elf.root.u.def.value = 0; | |
| 8025 | fdh->elf.root.u.def.section = sym_sec; | |
| a4aa0fb7 | 8026 | } |
| 51aecdc5 | 8027 | opd->adjust[OPD_NDX (rel->r_offset)] = -1; |
| 1e2f5b6e | 8028 | |
| 0e1862bb | 8029 | if (NO_OPD_RELOCS || bfd_link_relocatable (info)) |
| 51aecdc5 AM |
8030 | rel = next_rel; |
| 8031 | else | |
| 8032 | while (1) | |
| 8033 | { | |
| 8034 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 8035 | NULL, h, sym)) | |
| 8036 | goto error_ret; | |
| 754021d0 | 8037 | |
| 51aecdc5 AM |
8038 | if (++rel == next_rel) |
| 8039 | break; | |
| 1e2f5b6e | 8040 | |
| 51aecdc5 AM |
8041 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8042 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8043 | r_symndx, ibfd)) | |
| 8044 | goto error_ret; | |
| 8045 | } | |
| 50bc7936 AM |
8046 | } |
| 8047 | else | |
| 1e2f5b6e | 8048 | { |
| 51aecdc5 AM |
8049 | /* We'll be keeping this opd entry. */ |
| 8050 | long adjust; | |
| 8051 | ||
| 8052 | if (fdh != NULL) | |
| 8053 | { | |
| 8054 | /* Redefine the function descriptor symbol to | |
| 8055 | this location in the opd section. It is | |
| 8056 | necessary to update the value here rather | |
| 8057 | than using an array of adjustments as we do | |
| 8058 | for local symbols, because various places | |
| 8059 | in the generic ELF code use the value | |
| 8060 | stored in u.def.value. */ | |
| 8061 | fdh->elf.root.u.def.value = wptr - new_contents; | |
| 8062 | fdh->adjust_done = 1; | |
| 8063 | } | |
| 8064 | ||
| 8065 | /* Local syms are a bit tricky. We could | |
| 8066 | tweak them as they can be cached, but | |
| 8067 | we'd need to look through the local syms | |
| 8068 | for the function descriptor sym which we | |
| 8069 | don't have at the moment. So keep an | |
| 8070 | array of adjustments. */ | |
| 8071 | adjust = (wptr - new_contents) - (rptr - sec->contents); | |
| 8072 | opd->adjust[OPD_NDX (rel->r_offset)] = adjust; | |
| 8073 | ||
| 8074 | if (wptr != rptr) | |
| 8075 | memcpy (wptr, rptr, opd_ent_size); | |
| 8076 | wptr += opd_ent_size; | |
| 8077 | if (add_aux_fields && opd_ent_size == 16) | |
| 8078 | { | |
| 8079 | memset (wptr, '\0', 8); | |
| 8080 | wptr += 8; | |
| 8081 | } | |
| 8082 | ||
| 50bc7936 | 8083 | /* We need to adjust any reloc offsets to point to the |
| 51aecdc5 AM |
8084 | new opd entries. */ |
| 8085 | for ( ; rel != next_rel; ++rel) | |
| 8086 | { | |
| 8087 | rel->r_offset += adjust; | |
| 8088 | if (write_rel != rel) | |
| 8089 | memcpy (write_rel, rel, sizeof (*rel)); | |
| 8090 | ++write_rel; | |
| 8091 | } | |
| 1e2f5b6e | 8092 | } |
| 51aecdc5 AM |
8093 | |
| 8094 | rptr += opd_ent_size; | |
| 1e2f5b6e AM |
8095 | } |
| 8096 | ||
| 3f764659 | 8097 | sec->size = wptr - new_contents; |
| 1e2f5b6e | 8098 | sec->reloc_count = write_rel - relstart; |
| 3f764659 JJ |
8099 | if (add_aux_fields) |
| 8100 | { | |
| 8101 | free (sec->contents); | |
| 8102 | sec->contents = new_contents; | |
| 8103 | } | |
| 8104 | ||
| 05bf9422 | 8105 | /* Fudge the header size too, as this is used later in |
| cdcf6e38 | 8106 | elf_bfd_final_link if we are emitting relocs. */ |
| d4730f92 BS |
8107 | rel_hdr = _bfd_elf_single_rel_hdr (sec); |
| 8108 | rel_hdr->sh_size = sec->reloc_count * rel_hdr->sh_entsize; | |
| 754021d0 | 8109 | some_edited = TRUE; |
| 1e2f5b6e | 8110 | } |
| 6cdc0ccc | 8111 | else if (elf_section_data (sec)->relocs != relstart) |
| 1e2f5b6e | 8112 | free (relstart); |
| 6cdc0ccc | 8113 | |
| 411e1bfb AM |
8114 | if (local_syms != NULL |
| 8115 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 8116 | { | |
| 8117 | if (!info->keep_memory) | |
| 8118 | free (local_syms); | |
| 8119 | else | |
| 8120 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 8121 | } | |
| 8122 | } | |
| 8123 | ||
| 754021d0 AM |
8124 | if (some_edited) |
| 8125 | elf_link_hash_traverse (elf_hash_table (info), adjust_opd_syms, NULL); | |
| 8126 | ||
| 3f764659 JJ |
8127 | /* If we are doing a final link and the last .opd entry is just 16 byte |
| 8128 | long, add a 8 byte padding after it. */ | |
| 0e1862bb | 8129 | if (need_pad != NULL && !bfd_link_relocatable (info)) |
| 3f764659 JJ |
8130 | { |
| 8131 | bfd_byte *p; | |
| 8132 | ||
| 8133 | if ((need_pad->flags & SEC_IN_MEMORY) == 0) | |
| 8134 | { | |
| 8135 | BFD_ASSERT (need_pad->size > 0); | |
| 8136 | ||
| 8137 | p = bfd_malloc (need_pad->size + 8); | |
| 8138 | if (p == NULL) | |
| 8139 | return FALSE; | |
| 699733f6 | 8140 | |
| 3f764659 JJ |
8141 | if (! bfd_get_section_contents (need_pad->owner, need_pad, |
| 8142 | p, 0, need_pad->size)) | |
| 8143 | return FALSE; | |
| 8144 | ||
| 8145 | need_pad->contents = p; | |
| 8146 | need_pad->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS); | |
| 8147 | } | |
| 8148 | else | |
| 8149 | { | |
| 8150 | p = bfd_realloc (need_pad->contents, need_pad->size + 8); | |
| 8151 | if (p == NULL) | |
| 8152 | return FALSE; | |
| 8153 | ||
| 8154 | need_pad->contents = p; | |
| 8155 | } | |
| 8156 | ||
| 8157 | memset (need_pad->contents + need_pad->size, 0, 8); | |
| 8158 | need_pad->size += 8; | |
| 8159 | } | |
| 8160 | ||
| 411e1bfb AM |
8161 | return TRUE; |
| 8162 | } | |
| 8163 | ||
| e1918d23 | 8164 | /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */ |
| 411e1bfb | 8165 | |
| e1918d23 | 8166 | asection * |
| e7d1c40c | 8167 | ppc64_elf_tls_setup (struct bfd_link_info *info) |
| 411e1bfb | 8168 | { |
| 411e1bfb AM |
8169 | struct ppc_link_hash_table *htab; |
| 8170 | ||
| 411e1bfb | 8171 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8172 | if (htab == NULL) |
| 8173 | return NULL; | |
| 8174 | ||
| ee67d69a AM |
8175 | if (abiversion (info->output_bfd) == 1) |
| 8176 | htab->opd_abi = 1; | |
| 8177 | ||
| e7d1c40c | 8178 | if (htab->params->no_multi_toc) |
| 33c0ec9d AM |
8179 | htab->do_multi_toc = 0; |
| 8180 | else if (!htab->do_multi_toc) | |
| e7d1c40c | 8181 | htab->params->no_multi_toc = 1; |
| 33c0ec9d | 8182 | |
| 3a71aa26 AM |
8183 | htab->tls_get_addr = ((struct ppc_link_hash_entry *) |
| 8184 | elf_link_hash_lookup (&htab->elf, ".__tls_get_addr", | |
| 8185 | FALSE, FALSE, TRUE)); | |
| a7f2871e AM |
8186 | /* Move dynamic linking info to the function descriptor sym. */ |
| 8187 | if (htab->tls_get_addr != NULL) | |
| 8188 | func_desc_adjust (&htab->tls_get_addr->elf, info); | |
| 3a71aa26 AM |
8189 | htab->tls_get_addr_fd = ((struct ppc_link_hash_entry *) |
| 8190 | elf_link_hash_lookup (&htab->elf, "__tls_get_addr", | |
| 8191 | FALSE, FALSE, TRUE)); | |
| 7c9cf415 | 8192 | if (htab->params->tls_get_addr_opt) |
| a7f2871e AM |
8193 | { |
| 8194 | struct elf_link_hash_entry *opt, *opt_fd, *tga, *tga_fd; | |
| 8195 | ||
| 8196 | opt = elf_link_hash_lookup (&htab->elf, ".__tls_get_addr_opt", | |
| 8197 | FALSE, FALSE, TRUE); | |
| 8198 | if (opt != NULL) | |
| 8199 | func_desc_adjust (opt, info); | |
| 8200 | opt_fd = elf_link_hash_lookup (&htab->elf, "__tls_get_addr_opt", | |
| 8201 | FALSE, FALSE, TRUE); | |
| 8202 | if (opt_fd != NULL | |
| 8203 | && (opt_fd->root.type == bfd_link_hash_defined | |
| 8204 | || opt_fd->root.type == bfd_link_hash_defweak)) | |
| 8205 | { | |
| 8206 | /* If glibc supports an optimized __tls_get_addr call stub, | |
| 8207 | signalled by the presence of __tls_get_addr_opt, and we'll | |
| 8208 | be calling __tls_get_addr via a plt call stub, then | |
| 8209 | make __tls_get_addr point to __tls_get_addr_opt. */ | |
| 8210 | tga_fd = &htab->tls_get_addr_fd->elf; | |
| 8211 | if (htab->elf.dynamic_sections_created | |
| 8212 | && tga_fd != NULL | |
| 8213 | && (tga_fd->type == STT_FUNC | |
| 8214 | || tga_fd->needs_plt) | |
| 8215 | && !(SYMBOL_CALLS_LOCAL (info, tga_fd) | |
| 8216 | || (ELF_ST_VISIBILITY (tga_fd->other) != STV_DEFAULT | |
| 8217 | && tga_fd->root.type == bfd_link_hash_undefweak))) | |
| 8218 | { | |
| 8219 | struct plt_entry *ent; | |
| 8220 | ||
| 8221 | for (ent = tga_fd->plt.plist; ent != NULL; ent = ent->next) | |
| 8222 | if (ent->plt.refcount > 0) | |
| 8223 | break; | |
| 8224 | if (ent != NULL) | |
| 8225 | { | |
| 8226 | tga_fd->root.type = bfd_link_hash_indirect; | |
| 8227 | tga_fd->root.u.i.link = &opt_fd->root; | |
| 8228 | ppc64_elf_copy_indirect_symbol (info, opt_fd, tga_fd); | |
| 3bd43ebc | 8229 | opt_fd->forced_local = 0; |
| a7f2871e AM |
8230 | if (opt_fd->dynindx != -1) |
| 8231 | { | |
| 8232 | /* Use __tls_get_addr_opt in dynamic relocations. */ | |
| 8233 | opt_fd->dynindx = -1; | |
| 8234 | _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, | |
| 8235 | opt_fd->dynstr_index); | |
| 8236 | if (!bfd_elf_link_record_dynamic_symbol (info, opt_fd)) | |
| 854b41e7 | 8237 | return NULL; |
| a7f2871e AM |
8238 | } |
| 8239 | htab->tls_get_addr_fd = (struct ppc_link_hash_entry *) opt_fd; | |
| 8240 | tga = &htab->tls_get_addr->elf; | |
| 8241 | if (opt != NULL && tga != NULL) | |
| 8242 | { | |
| 8243 | tga->root.type = bfd_link_hash_indirect; | |
| 8244 | tga->root.u.i.link = &opt->root; | |
| 8245 | ppc64_elf_copy_indirect_symbol (info, opt, tga); | |
| 3bd43ebc | 8246 | opt->forced_local = 0; |
| a7f2871e AM |
8247 | _bfd_elf_link_hash_hide_symbol (info, opt, |
| 8248 | tga->forced_local); | |
| 8249 | htab->tls_get_addr = (struct ppc_link_hash_entry *) opt; | |
| 8250 | } | |
| 8251 | htab->tls_get_addr_fd->oh = htab->tls_get_addr; | |
| 8252 | htab->tls_get_addr_fd->is_func_descriptor = 1; | |
| 8253 | if (htab->tls_get_addr != NULL) | |
| 8254 | { | |
| 8255 | htab->tls_get_addr->oh = htab->tls_get_addr_fd; | |
| 8256 | htab->tls_get_addr->is_func = 1; | |
| 8257 | } | |
| 8258 | } | |
| 8259 | } | |
| 8260 | } | |
| 7c9cf415 AM |
8261 | else if (htab->params->tls_get_addr_opt < 0) |
| 8262 | htab->params->tls_get_addr_opt = 0; | |
| a7f2871e | 8263 | } |
| 33c0ec9d | 8264 | return _bfd_elf_tls_setup (info->output_bfd, info); |
| 3a71aa26 | 8265 | } |
| 8387904d | 8266 | |
| 3a71aa26 AM |
8267 | /* Return TRUE iff REL is a branch reloc with a global symbol matching |
| 8268 | HASH1 or HASH2. */ | |
| 8387904d | 8269 | |
| 3a71aa26 AM |
8270 | static bfd_boolean |
| 8271 | branch_reloc_hash_match (const bfd *ibfd, | |
| 8272 | const Elf_Internal_Rela *rel, | |
| 8273 | const struct ppc_link_hash_entry *hash1, | |
| 8274 | const struct ppc_link_hash_entry *hash2) | |
| 8275 | { | |
| 8276 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 8277 | enum elf_ppc64_reloc_type r_type = ELF64_R_TYPE (rel->r_info); | |
| 8278 | unsigned int r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8279 | ||
| e054468f | 8280 | if (r_symndx >= symtab_hdr->sh_info && is_branch_reloc (r_type)) |
| 8387904d | 8281 | { |
| 3a71aa26 AM |
8282 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); |
| 8283 | struct elf_link_hash_entry *h; | |
| 8387904d | 8284 | |
| 3a71aa26 | 8285 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| b31867b6 | 8286 | h = elf_follow_link (h); |
| 3a71aa26 AM |
8287 | if (h == &hash1->elf || h == &hash2->elf) |
| 8288 | return TRUE; | |
| a48ebf4d | 8289 | } |
| 3a71aa26 | 8290 | return FALSE; |
| 951fd09b | 8291 | } |
| 411e1bfb | 8292 | |
| 951fd09b AM |
8293 | /* Run through all the TLS relocs looking for optimization |
| 8294 | opportunities. The linker has been hacked (see ppc64elf.em) to do | |
| 8295 | a preliminary section layout so that we know the TLS segment | |
| 8296 | offsets. We can't optimize earlier because some optimizations need | |
| 8297 | to know the tp offset, and we need to optimize before allocating | |
| 8298 | dynamic relocations. */ | |
| 8299 | ||
| 8300 | bfd_boolean | |
| 33c0ec9d | 8301 | ppc64_elf_tls_optimize (struct bfd_link_info *info) |
| 951fd09b AM |
8302 | { |
| 8303 | bfd *ibfd; | |
| 8304 | asection *sec; | |
| 8305 | struct ppc_link_hash_table *htab; | |
| 663a1470 | 8306 | unsigned char *toc_ref; |
| 102890f0 | 8307 | int pass; |
| 951fd09b | 8308 | |
| 3cbc1e5e | 8309 | if (!bfd_link_executable (info)) |
| 411e1bfb AM |
8310 | return TRUE; |
| 8311 | ||
| 951fd09b | 8312 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
8313 | if (htab == NULL) |
| 8314 | return FALSE; | |
| 8315 | ||
| 663a1470 AM |
8316 | /* Make two passes over the relocs. On the first pass, mark toc |
| 8317 | entries involved with tls relocs, and check that tls relocs | |
| 8318 | involved in setting up a tls_get_addr call are indeed followed by | |
| 8319 | such a call. If they are not, we can't do any tls optimization. | |
| 8320 | On the second pass twiddle tls_mask flags to notify | |
| 8321 | relocate_section that optimization can be done, and adjust got | |
| 8322 | and plt refcounts. */ | |
| 8323 | toc_ref = NULL; | |
| 8324 | for (pass = 0; pass < 2; ++pass) | |
| c72f2fb2 | 8325 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 663a1470 AM |
8326 | { |
| 8327 | Elf_Internal_Sym *locsyms = NULL; | |
| 8328 | asection *toc = bfd_get_section_by_name (ibfd, ".toc"); | |
| 8329 | ||
| 102890f0 AM |
8330 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 8331 | if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section)) | |
| 8332 | { | |
| 8333 | Elf_Internal_Rela *relstart, *rel, *relend; | |
| 663a1470 | 8334 | bfd_boolean found_tls_get_addr_arg = 0; |
| 411e1bfb | 8335 | |
| 102890f0 AM |
8336 | /* Read the relocations. */ |
| 8337 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 8338 | info->keep_memory); | |
| 8339 | if (relstart == NULL) | |
| 2915c55b JK |
8340 | { |
| 8341 | free (toc_ref); | |
| 8342 | return FALSE; | |
| 8343 | } | |
| 411e1bfb | 8344 | |
| 102890f0 AM |
8345 | relend = relstart + sec->reloc_count; |
| 8346 | for (rel = relstart; rel < relend; rel++) | |
| 8347 | { | |
| 8348 | enum elf_ppc64_reloc_type r_type; | |
| 8349 | unsigned long r_symndx; | |
| 8350 | struct elf_link_hash_entry *h; | |
| 8351 | Elf_Internal_Sym *sym; | |
| 8352 | asection *sym_sec; | |
| f961d9dd AM |
8353 | unsigned char *tls_mask; |
| 8354 | unsigned char tls_set, tls_clear, tls_type = 0; | |
| 102890f0 AM |
8355 | bfd_vma value; |
| 8356 | bfd_boolean ok_tprel, is_local; | |
| 8357 | long toc_ref_index = 0; | |
| 8358 | int expecting_tls_get_addr = 0; | |
| 663a1470 | 8359 | bfd_boolean ret = FALSE; |
| 411e1bfb | 8360 | |
| 102890f0 AM |
8361 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 8362 | if (!get_sym_h (&h, &sym, &sym_sec, &tls_mask, &locsyms, | |
| 8363 | r_symndx, ibfd)) | |
| 8364 | { | |
| 8365 | err_free_rel: | |
| 8366 | if (elf_section_data (sec)->relocs != relstart) | |
| 8367 | free (relstart); | |
| 8368 | if (toc_ref != NULL) | |
| 8369 | free (toc_ref); | |
| 8370 | if (locsyms != NULL | |
| 0ffa91dd | 8371 | && (elf_symtab_hdr (ibfd).contents |
| 102890f0 AM |
8372 | != (unsigned char *) locsyms)) |
| 8373 | free (locsyms); | |
| 663a1470 | 8374 | return ret; |
| 102890f0 | 8375 | } |
| 411e1bfb | 8376 | |
| 102890f0 AM |
8377 | if (h != NULL) |
| 8378 | { | |
| 766bc656 AM |
8379 | if (h->root.type == bfd_link_hash_defined |
| 8380 | || h->root.type == bfd_link_hash_defweak) | |
| 8381 | value = h->root.u.def.value; | |
| 8382 | else if (h->root.type == bfd_link_hash_undefweak) | |
| 8383 | value = 0; | |
| 8384 | else | |
| 663a1470 AM |
8385 | { |
| 8386 | found_tls_get_addr_arg = 0; | |
| 8387 | continue; | |
| 8388 | } | |
| 102890f0 AM |
8389 | } |
| 8390 | else | |
| 8391 | /* Symbols referenced by TLS relocs must be of type | |
| 8392 | STT_TLS. So no need for .opd local sym adjust. */ | |
| 8393 | value = sym->st_value; | |
| 8394 | ||
| 8395 | ok_tprel = FALSE; | |
| 8396 | is_local = FALSE; | |
| 8397 | if (h == NULL | |
| 8398 | || !h->def_dynamic) | |
| 8399 | { | |
| 8400 | is_local = TRUE; | |
| 766bc656 AM |
8401 | if (h != NULL |
| 8402 | && h->root.type == bfd_link_hash_undefweak) | |
| 8403 | ok_tprel = TRUE; | |
| c27b8c2a AM |
8404 | else if (sym_sec != NULL |
| 8405 | && sym_sec->output_section != NULL) | |
| 766bc656 AM |
8406 | { |
| 8407 | value += sym_sec->output_offset; | |
| 8408 | value += sym_sec->output_section->vma; | |
| 8409 | value -= htab->elf.tls_sec->vma; | |
| 8410 | ok_tprel = (value + TP_OFFSET + ((bfd_vma) 1 << 31) | |
| 8411 | < (bfd_vma) 1 << 32); | |
| 8412 | } | |
| 102890f0 | 8413 | } |
| 951fd09b | 8414 | |
| 102890f0 | 8415 | r_type = ELF64_R_TYPE (rel->r_info); |
| 663a1470 AM |
8416 | /* If this section has old-style __tls_get_addr calls |
| 8417 | without marker relocs, then check that each | |
| 8418 | __tls_get_addr call reloc is preceded by a reloc | |
| 8419 | that conceivably belongs to the __tls_get_addr arg | |
| 8420 | setup insn. If we don't find matching arg setup | |
| 8421 | relocs, don't do any tls optimization. */ | |
| 8422 | if (pass == 0 | |
| 8423 | && sec->has_tls_get_addr_call | |
| 8424 | && h != NULL | |
| 8425 | && (h == &htab->tls_get_addr->elf | |
| 8426 | || h == &htab->tls_get_addr_fd->elf) | |
| 8427 | && !found_tls_get_addr_arg | |
| 8428 | && is_branch_reloc (r_type)) | |
| 8429 | { | |
| 25f53a85 | 8430 | info->callbacks->minfo (_("%H __tls_get_addr lost arg, " |
| 663a1470 AM |
8431 | "TLS optimization disabled\n"), |
| 8432 | ibfd, sec, rel->r_offset); | |
| 8433 | ret = TRUE; | |
| 8434 | goto err_free_rel; | |
| 8435 | } | |
| 8436 | ||
| 8437 | found_tls_get_addr_arg = 0; | |
| 102890f0 AM |
8438 | switch (r_type) |
| 8439 | { | |
| 8440 | case R_PPC64_GOT_TLSLD16: | |
| 8441 | case R_PPC64_GOT_TLSLD16_LO: | |
| 8442 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8443 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8444 | /* Fall thru */ |
| 8445 | ||
| 8446 | case R_PPC64_GOT_TLSLD16_HI: | |
| 8447 | case R_PPC64_GOT_TLSLD16_HA: | |
| 8448 | /* These relocs should never be against a symbol | |
| 8449 | defined in a shared lib. Leave them alone if | |
| 8450 | that turns out to be the case. */ | |
| 8451 | if (!is_local) | |
| 8452 | continue; | |
| 411e1bfb | 8453 | |
| 102890f0 | 8454 | /* LD -> LE */ |
| 411e1bfb | 8455 | tls_set = 0; |
| 102890f0 AM |
8456 | tls_clear = TLS_LD; |
| 8457 | tls_type = TLS_TLS | TLS_LD; | |
| 8458 | break; | |
| 411e1bfb | 8459 | |
| 102890f0 AM |
8460 | case R_PPC64_GOT_TLSGD16: |
| 8461 | case R_PPC64_GOT_TLSGD16_LO: | |
| 8462 | expecting_tls_get_addr = 1; | |
| 663a1470 | 8463 | found_tls_get_addr_arg = 1; |
| 102890f0 AM |
8464 | /* Fall thru */ |
| 8465 | ||
| 8466 | case R_PPC64_GOT_TLSGD16_HI: | |
| 8467 | case R_PPC64_GOT_TLSGD16_HA: | |
| 8468 | if (ok_tprel) | |
| 8469 | /* GD -> LE */ | |
| 411e1bfb | 8470 | tls_set = 0; |
| 102890f0 AM |
8471 | else |
| 8472 | /* GD -> IE */ | |
| 8473 | tls_set = TLS_TLS | TLS_TPRELGD; | |
| 8474 | tls_clear = TLS_GD; | |
| 8475 | tls_type = TLS_TLS | TLS_GD; | |
| 8476 | break; | |
| 8477 | ||
| 8478 | case R_PPC64_GOT_TPREL16_DS: | |
| 8479 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 8480 | case R_PPC64_GOT_TPREL16_HI: | |
| 8481 | case R_PPC64_GOT_TPREL16_HA: | |
| 8482 | if (ok_tprel) | |
| 8483 | { | |
| 8484 | /* IE -> LE */ | |
| 8485 | tls_set = 0; | |
| 8486 | tls_clear = TLS_TPREL; | |
| 8487 | tls_type = TLS_TLS | TLS_TPREL; | |
| 8488 | break; | |
| 8489 | } | |
| 411e1bfb AM |
8490 | continue; |
| 8491 | ||
| 727fc41e AM |
8492 | case R_PPC64_TLSGD: |
| 8493 | case R_PPC64_TLSLD: | |
| 663a1470 AM |
8494 | found_tls_get_addr_arg = 1; |
| 8495 | /* Fall thru */ | |
| 8496 | ||
| 8497 | case R_PPC64_TLS: | |
| 8498 | case R_PPC64_TOC16: | |
| 8499 | case R_PPC64_TOC16_LO: | |
| 102890f0 AM |
8500 | if (sym_sec == NULL || sym_sec != toc) |
| 8501 | continue; | |
| 8502 | ||
| 8503 | /* Mark this toc entry as referenced by a TLS | |
| 8504 | code sequence. We can do that now in the | |
| 8505 | case of R_PPC64_TLS, and after checking for | |
| 8506 | tls_get_addr for the TOC16 relocs. */ | |
| 8507 | if (toc_ref == NULL) | |
| 663a1470 AM |
8508 | toc_ref = bfd_zmalloc (toc->output_section->rawsize / 8); |
| 8509 | if (toc_ref == NULL) | |
| 8510 | goto err_free_rel; | |
| 8511 | ||
| 102890f0 AM |
8512 | if (h != NULL) |
| 8513 | value = h->root.u.def.value; | |
| 8514 | else | |
| 8515 | value = sym->st_value; | |
| 8516 | value += rel->r_addend; | |
| 73242275 AM |
8517 | if (value % 8 != 0) |
| 8518 | continue; | |
| 8519 | BFD_ASSERT (value < toc->size | |
| 8520 | && toc->output_offset % 8 == 0); | |
| 663a1470 | 8521 | toc_ref_index = (value + toc->output_offset) / 8; |
| 727fc41e AM |
8522 | if (r_type == R_PPC64_TLS |
| 8523 | || r_type == R_PPC64_TLSGD | |
| 8524 | || r_type == R_PPC64_TLSLD) | |
| 102890f0 AM |
8525 | { |
| 8526 | toc_ref[toc_ref_index] = 1; | |
| 8527 | continue; | |
| 8528 | } | |
| 8529 | ||
| 8530 | if (pass != 0 && toc_ref[toc_ref_index] == 0) | |
| 8531 | continue; | |
| 8532 | ||
| 8533 | tls_set = 0; | |
| 8534 | tls_clear = 0; | |
| 8535 | expecting_tls_get_addr = 2; | |
| 8536 | break; | |
| 8537 | ||
| 8538 | case R_PPC64_TPREL64: | |
| 8539 | if (pass == 0 | |
| 8540 | || sec != toc | |
| 8541 | || toc_ref == NULL | |
| 663a1470 | 8542 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8543 | continue; |
| 8544 | if (ok_tprel) | |
| 8545 | { | |
| 8546 | /* IE -> LE */ | |
| 8547 | tls_set = TLS_EXPLICIT; | |
| 8548 | tls_clear = TLS_TPREL; | |
| 8549 | break; | |
| 8550 | } | |
| 8551 | continue; | |
| 8552 | ||
| 8553 | case R_PPC64_DTPMOD64: | |
| 8554 | if (pass == 0 | |
| 8555 | || sec != toc | |
| 8556 | || toc_ref == NULL | |
| 663a1470 | 8557 | || !toc_ref[(rel->r_offset + toc->output_offset) / 8]) |
| 102890f0 AM |
8558 | continue; |
| 8559 | if (rel + 1 < relend | |
| 8560 | && (rel[1].r_info | |
| 8561 | == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64)) | |
| 8562 | && rel[1].r_offset == rel->r_offset + 8) | |
| 8563 | { | |
| 8564 | if (ok_tprel) | |
| 8565 | /* GD -> LE */ | |
| 8566 | tls_set = TLS_EXPLICIT | TLS_GD; | |
| 8567 | else | |
| 8568 | /* GD -> IE */ | |
| 8569 | tls_set = TLS_EXPLICIT | TLS_GD | TLS_TPRELGD; | |
| 8570 | tls_clear = TLS_GD; | |
| 8571 | } | |
| 8572 | else | |
| 8573 | { | |
| 8574 | if (!is_local) | |
| 8575 | continue; | |
| 8576 | ||
| 8577 | /* LD -> LE */ | |
| 8578 | tls_set = TLS_EXPLICIT; | |
| 8579 | tls_clear = TLS_LD; | |
| 8580 | } | |
| 8581 | break; | |
| 8582 | ||
| 8583 | default: | |
| 8584 | continue; | |
| 8585 | } | |
| 8586 | ||
| 8587 | if (pass == 0) | |
| 8588 | { | |
| 727fc41e AM |
8589 | if (!expecting_tls_get_addr |
| 8590 | || !sec->has_tls_get_addr_call) | |
| 102890f0 AM |
8591 | continue; |
| 8592 | ||
| 3a71aa26 AM |
8593 | if (rel + 1 < relend |
| 8594 | && branch_reloc_hash_match (ibfd, rel + 1, | |
| 8595 | htab->tls_get_addr, | |
| 8596 | htab->tls_get_addr_fd)) | |
| 102890f0 | 8597 | { |
| 3a71aa26 | 8598 | if (expecting_tls_get_addr == 2) |
| 102890f0 | 8599 | { |
| 3a71aa26 | 8600 | /* Check for toc tls entries. */ |
| f961d9dd | 8601 | unsigned char *toc_tls; |
| 3a71aa26 AM |
8602 | int retval; |
| 8603 | ||
| 8604 | retval = get_tls_mask (&toc_tls, NULL, NULL, | |
| 8605 | &locsyms, | |
| 8606 | rel, ibfd); | |
| 8607 | if (retval == 0) | |
| 8608 | goto err_free_rel; | |
| 663a1470 AM |
8609 | if (toc_tls != NULL) |
| 8610 | { | |
| 8611 | if ((*toc_tls & (TLS_GD | TLS_LD)) != 0) | |
| 8612 | found_tls_get_addr_arg = 1; | |
| 8613 | if (retval > 1) | |
| 8614 | toc_ref[toc_ref_index] = 1; | |
| 8615 | } | |
| 102890f0 | 8616 | } |
| 3a71aa26 | 8617 | continue; |
| 102890f0 AM |
8618 | } |
| 8619 | ||
| 8620 | if (expecting_tls_get_addr != 1) | |
| 8621 | continue; | |
| 8622 | ||
| 8623 | /* Uh oh, we didn't find the expected call. We | |
| 8624 | could just mark this symbol to exclude it | |
| 8625 | from tls optimization but it's safer to skip | |
| 663a1470 | 8626 | the entire optimization. */ |
| 25f53a85 | 8627 | info->callbacks->minfo (_("%H arg lost __tls_get_addr, " |
| 663a1470 AM |
8628 | "TLS optimization disabled\n"), |
| 8629 | ibfd, sec, rel->r_offset); | |
| 8630 | ret = TRUE; | |
| 8631 | goto err_free_rel; | |
| 102890f0 AM |
8632 | } |
| 8633 | ||
| 85f7a9cb | 8634 | if (expecting_tls_get_addr && htab->tls_get_addr != NULL) |
| 102890f0 AM |
8635 | { |
| 8636 | struct plt_entry *ent; | |
| 8637 | for (ent = htab->tls_get_addr->elf.plt.plist; | |
| 8638 | ent != NULL; | |
| 8639 | ent = ent->next) | |
| 8640 | if (ent->addend == 0) | |
| 411e1bfb | 8641 | { |
| 102890f0 | 8642 | if (ent->plt.refcount > 0) |
| 30038c59 | 8643 | { |
| 102890f0 AM |
8644 | ent->plt.refcount -= 1; |
| 8645 | expecting_tls_get_addr = 0; | |
| 30038c59 | 8646 | } |
| 102890f0 | 8647 | break; |
| 411e1bfb | 8648 | } |
| 102890f0 | 8649 | } |
| 411e1bfb | 8650 | |
| 85f7a9cb | 8651 | if (expecting_tls_get_addr && htab->tls_get_addr_fd != NULL) |
| 102890f0 AM |
8652 | { |
| 8653 | struct plt_entry *ent; | |
| 8654 | for (ent = htab->tls_get_addr_fd->elf.plt.plist; | |
| 8655 | ent != NULL; | |
| 8656 | ent = ent->next) | |
| 8657 | if (ent->addend == 0) | |
| 411e1bfb | 8658 | { |
| 102890f0 AM |
8659 | if (ent->plt.refcount > 0) |
| 8660 | ent->plt.refcount -= 1; | |
| 8661 | break; | |
| 411e1bfb | 8662 | } |
| 102890f0 | 8663 | } |
| 411e1bfb | 8664 | |
| 102890f0 | 8665 | if (tls_clear == 0) |
| 30038c59 AM |
8666 | continue; |
| 8667 | ||
| 102890f0 AM |
8668 | if ((tls_set & TLS_EXPLICIT) == 0) |
| 8669 | { | |
| 8670 | struct got_entry *ent; | |
| 411e1bfb | 8671 | |
| 102890f0 AM |
8672 | /* Adjust got entry for this reloc. */ |
| 8673 | if (h != NULL) | |
| 8674 | ent = h->got.glist; | |
| 8675 | else | |
| 8676 | ent = elf_local_got_ents (ibfd)[r_symndx]; | |
| 411e1bfb | 8677 | |
| 102890f0 AM |
8678 | for (; ent != NULL; ent = ent->next) |
| 8679 | if (ent->addend == rel->r_addend | |
| 8680 | && ent->owner == ibfd | |
| 8681 | && ent->tls_type == tls_type) | |
| 8682 | break; | |
| 8683 | if (ent == NULL) | |
| 8684 | abort (); | |
| 411e1bfb | 8685 | |
| 102890f0 AM |
8686 | if (tls_set == 0) |
| 8687 | { | |
| 8688 | /* We managed to get rid of a got entry. */ | |
| 8689 | if (ent->got.refcount > 0) | |
| 8690 | ent->got.refcount -= 1; | |
| 8691 | } | |
| 8692 | } | |
| 8693 | else | |
| 8694 | { | |
| 8695 | /* If we got rid of a DTPMOD/DTPREL reloc pair then | |
| 8696 | we'll lose one or two dyn relocs. */ | |
| 8697 | if (!dec_dynrel_count (rel->r_info, sec, info, | |
| 19e08130 | 8698 | NULL, h, sym)) |
| 102890f0 | 8699 | return FALSE; |
| 411e1bfb | 8700 | |
| 102890f0 AM |
8701 | if (tls_set == (TLS_EXPLICIT | TLS_GD)) |
| 8702 | { | |
| 8703 | if (!dec_dynrel_count ((rel + 1)->r_info, sec, info, | |
| 19e08130 | 8704 | NULL, h, sym)) |
| 102890f0 AM |
8705 | return FALSE; |
| 8706 | } | |
| 8707 | } | |
| 411e1bfb | 8708 | |
| 102890f0 AM |
8709 | *tls_mask |= tls_set; |
| 8710 | *tls_mask &= ~tls_clear; | |
| 8711 | } | |
| 8c1d1bb8 | 8712 | |
| 102890f0 AM |
8713 | if (elf_section_data (sec)->relocs != relstart) |
| 8714 | free (relstart); | |
| 8715 | } | |
| 411e1bfb | 8716 | |
| 663a1470 AM |
8717 | if (locsyms != NULL |
| 8718 | && (elf_symtab_hdr (ibfd).contents != (unsigned char *) locsyms)) | |
| 8719 | { | |
| 8720 | if (!info->keep_memory) | |
| 8721 | free (locsyms); | |
| 8722 | else | |
| 8723 | elf_symtab_hdr (ibfd).contents = (unsigned char *) locsyms; | |
| 8724 | } | |
| 8725 | } | |
| 411e1bfb | 8726 | |
| 663a1470 AM |
8727 | if (toc_ref != NULL) |
| 8728 | free (toc_ref); | |
| b34976b6 | 8729 | return TRUE; |
| 1e2f5b6e | 8730 | } |
| b34976b6 | 8731 | |
| c5614fa4 AM |
8732 | /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust |
| 8733 | the values of any global symbols in a toc section that has been | |
| 8734 | edited. Globals in toc sections should be a rarity, so this function | |
| 8735 | sets a flag if any are found in toc sections other than the one just | |
| 8736 | edited, so that futher hash table traversals can be avoided. */ | |
| 8737 | ||
| 8738 | struct adjust_toc_info | |
| 8739 | { | |
| 8740 | asection *toc; | |
| 8741 | unsigned long *skip; | |
| 8742 | bfd_boolean global_toc_syms; | |
| 8743 | }; | |
| 8744 | ||
| ba761f19 AM |
8745 | enum toc_skip_enum { ref_from_discarded = 1, can_optimize = 2 }; |
| 8746 | ||
| c5614fa4 AM |
8747 | static bfd_boolean |
| 8748 | adjust_toc_syms (struct elf_link_hash_entry *h, void *inf) | |
| 8749 | { | |
| 8750 | struct ppc_link_hash_entry *eh; | |
| 8751 | struct adjust_toc_info *toc_inf = (struct adjust_toc_info *) inf; | |
| 854b41e7 | 8752 | unsigned long i; |
| c5614fa4 | 8753 | |
| c5614fa4 AM |
8754 | if (h->root.type != bfd_link_hash_defined |
| 8755 | && h->root.type != bfd_link_hash_defweak) | |
| 8756 | return TRUE; | |
| 8757 | ||
| 8758 | eh = (struct ppc_link_hash_entry *) h; | |
| 8759 | if (eh->adjust_done) | |
| 8760 | return TRUE; | |
| 8761 | ||
| 8762 | if (eh->elf.root.u.def.section == toc_inf->toc) | |
| 8763 | { | |
| 854b41e7 AM |
8764 | if (eh->elf.root.u.def.value > toc_inf->toc->rawsize) |
| 8765 | i = toc_inf->toc->rawsize >> 3; | |
| c5614fa4 | 8766 | else |
| 854b41e7 AM |
8767 | i = eh->elf.root.u.def.value >> 3; |
| 8768 | ||
| ba761f19 | 8769 | if ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| c5614fa4 AM |
8770 | { |
| 8771 | (*_bfd_error_handler) | |
| 854b41e7 AM |
8772 | (_("%s defined on removed toc entry"), eh->elf.root.root.string); |
| 8773 | do | |
| 8774 | ++i; | |
| ba761f19 | 8775 | while ((toc_inf->skip[i] & (ref_from_discarded | can_optimize)) != 0); |
| 854b41e7 | 8776 | eh->elf.root.u.def.value = (bfd_vma) i << 3; |
| c5614fa4 | 8777 | } |
| 854b41e7 AM |
8778 | |
| 8779 | eh->elf.root.u.def.value -= toc_inf->skip[i]; | |
| c5614fa4 AM |
8780 | eh->adjust_done = 1; |
| 8781 | } | |
| 8782 | else if (strcmp (eh->elf.root.u.def.section->name, ".toc") == 0) | |
| 8783 | toc_inf->global_toc_syms = TRUE; | |
| 8784 | ||
| 8785 | return TRUE; | |
| 8786 | } | |
| 8787 | ||
| 560c8763 AM |
8788 | /* Return TRUE iff INSN is one we expect on a _LO variety toc/got reloc. */ |
| 8789 | ||
| 8790 | static bfd_boolean | |
| 8791 | ok_lo_toc_insn (unsigned int insn) | |
| 8792 | { | |
| 8793 | return ((insn & (0x3f << 26)) == 14u << 26 /* addi */ | |
| 8794 | || (insn & (0x3f << 26)) == 32u << 26 /* lwz */ | |
| 8795 | || (insn & (0x3f << 26)) == 34u << 26 /* lbz */ | |
| 8796 | || (insn & (0x3f << 26)) == 36u << 26 /* stw */ | |
| 8797 | || (insn & (0x3f << 26)) == 38u << 26 /* stb */ | |
| 8798 | || (insn & (0x3f << 26)) == 40u << 26 /* lhz */ | |
| 8799 | || (insn & (0x3f << 26)) == 42u << 26 /* lha */ | |
| 8800 | || (insn & (0x3f << 26)) == 44u << 26 /* sth */ | |
| 8801 | || (insn & (0x3f << 26)) == 46u << 26 /* lmw */ | |
| 8802 | || (insn & (0x3f << 26)) == 47u << 26 /* stmw */ | |
| 8803 | || (insn & (0x3f << 26)) == 48u << 26 /* lfs */ | |
| 8804 | || (insn & (0x3f << 26)) == 50u << 26 /* lfd */ | |
| 8805 | || (insn & (0x3f << 26)) == 52u << 26 /* stfs */ | |
| 8806 | || (insn & (0x3f << 26)) == 54u << 26 /* stfd */ | |
| 8807 | || ((insn & (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */ | |
| 8808 | && (insn & 3) != 1) | |
| 8809 | || ((insn & (0x3f << 26)) == 62u << 26 /* std, stmd */ | |
| 8810 | && ((insn & 3) == 0 || (insn & 3) == 3)) | |
| 8811 | || (insn & (0x3f << 26)) == 12u << 26 /* addic */); | |
| 8812 | } | |
| 8813 | ||
| c5614fa4 AM |
8814 | /* Examine all relocs referencing .toc sections in order to remove |
| 8815 | unused .toc entries. */ | |
| 8816 | ||
| 8817 | bfd_boolean | |
| 33c0ec9d | 8818 | ppc64_elf_edit_toc (struct bfd_link_info *info) |
| c5614fa4 AM |
8819 | { |
| 8820 | bfd *ibfd; | |
| 8821 | struct adjust_toc_info toc_inf; | |
| 67f0cbdb | 8822 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| c5614fa4 | 8823 | |
| 67f0cbdb | 8824 | htab->do_toc_opt = 1; |
| c5614fa4 | 8825 | toc_inf.global_toc_syms = TRUE; |
| c72f2fb2 | 8826 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| c5614fa4 AM |
8827 | { |
| 8828 | asection *toc, *sec; | |
| 8829 | Elf_Internal_Shdr *symtab_hdr; | |
| 8830 | Elf_Internal_Sym *local_syms; | |
| 425b145b | 8831 | Elf_Internal_Rela *relstart, *rel, *toc_relocs; |
| c5614fa4 AM |
8832 | unsigned long *skip, *drop; |
| 8833 | unsigned char *used; | |
| 8834 | unsigned char *keep, last, some_unused; | |
| 8835 | ||
| 854b41e7 AM |
8836 | if (!is_ppc64_elf (ibfd)) |
| 8837 | continue; | |
| 8838 | ||
| c5614fa4 AM |
8839 | toc = bfd_get_section_by_name (ibfd, ".toc"); |
| 8840 | if (toc == NULL | |
| 92b7a70f | 8841 | || toc->size == 0 |
| dbaa2011 AM |
8842 | || toc->sec_info_type == SEC_INFO_TYPE_JUST_SYMS |
| 8843 | || discarded_section (toc)) | |
| c5614fa4 AM |
8844 | continue; |
| 8845 | ||
| 425b145b | 8846 | toc_relocs = NULL; |
| c5614fa4 | 8847 | local_syms = NULL; |
| 0ffa91dd | 8848 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| c5614fa4 AM |
8849 | |
| 8850 | /* Look at sections dropped from the final link. */ | |
| 8851 | skip = NULL; | |
| 8852 | relstart = NULL; | |
| 8853 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
| 8854 | { | |
| 8855 | if (sec->reloc_count == 0 | |
| dbaa2011 | 8856 | || !discarded_section (sec) |
| c5614fa4 AM |
8857 | || get_opd_info (sec) |
| 8858 | || (sec->flags & SEC_ALLOC) == 0 | |
| 8859 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 8860 | continue; | |
| 8861 | ||
| 8862 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, FALSE); | |
| 8863 | if (relstart == NULL) | |
| 8864 | goto error_ret; | |
| 8865 | ||
| 8866 | /* Run through the relocs to see which toc entries might be | |
| 8867 | unused. */ | |
| 8868 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 8869 | { | |
| 8870 | enum elf_ppc64_reloc_type r_type; | |
| 8871 | unsigned long r_symndx; | |
| 8872 | asection *sym_sec; | |
| 8873 | struct elf_link_hash_entry *h; | |
| 8874 | Elf_Internal_Sym *sym; | |
| 8875 | bfd_vma val; | |
| 8876 | ||
| 8877 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8878 | switch (r_type) | |
| 8879 | { | |
| 8880 | default: | |
| 8881 | continue; | |
| 8882 | ||
| 8883 | case R_PPC64_TOC16: | |
| 8884 | case R_PPC64_TOC16_LO: | |
| 8885 | case R_PPC64_TOC16_HI: | |
| 8886 | case R_PPC64_TOC16_HA: | |
| 8887 | case R_PPC64_TOC16_DS: | |
| 8888 | case R_PPC64_TOC16_LO_DS: | |
| 8889 | break; | |
| 8890 | } | |
| 8891 | ||
| 8892 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8893 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8894 | r_symndx, ibfd)) | |
| 8895 | goto error_ret; | |
| 8896 | ||
| 8897 | if (sym_sec != toc) | |
| 8898 | continue; | |
| 8899 | ||
| 8900 | if (h != NULL) | |
| 8901 | val = h->root.u.def.value; | |
| 8902 | else | |
| 8903 | val = sym->st_value; | |
| 8904 | val += rel->r_addend; | |
| 8905 | ||
| 8906 | if (val >= toc->size) | |
| 8907 | continue; | |
| 8908 | ||
| 8909 | /* Anything in the toc ought to be aligned to 8 bytes. | |
| 8910 | If not, don't mark as unused. */ | |
| 8911 | if (val & 7) | |
| 8912 | continue; | |
| 8913 | ||
| 8914 | if (skip == NULL) | |
| 8915 | { | |
| 854b41e7 | 8916 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); |
| c5614fa4 AM |
8917 | if (skip == NULL) |
| 8918 | goto error_ret; | |
| 8919 | } | |
| 8920 | ||
| ba761f19 | 8921 | skip[val >> 3] = ref_from_discarded; |
| c5614fa4 AM |
8922 | } |
| 8923 | ||
| 8924 | if (elf_section_data (sec)->relocs != relstart) | |
| 8925 | free (relstart); | |
| 8926 | } | |
| 8927 | ||
| ba761f19 AM |
8928 | /* For largetoc loads of address constants, we can convert |
| 8929 | . addis rx,2,addr@got@ha | |
| 8930 | . ld ry,addr@got@l(rx) | |
| 8931 | to | |
| 8932 | . addis rx,2,addr@toc@ha | |
| 8933 | . addi ry,rx,addr@toc@l | |
| 8934 | when addr is within 2G of the toc pointer. This then means | |
| 8935 | that the word storing "addr" in the toc is no longer needed. */ | |
| 68ffbac6 | 8936 | |
| ba761f19 AM |
8937 | if (!ppc64_elf_tdata (ibfd)->has_small_toc_reloc |
| 8938 | && toc->output_section->rawsize < (bfd_vma) 1 << 31 | |
| 8939 | && toc->reloc_count != 0) | |
| 8940 | { | |
| 8941 | /* Read toc relocs. */ | |
| 425b145b AM |
8942 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, |
| 8943 | info->keep_memory); | |
| 8944 | if (toc_relocs == NULL) | |
| ba761f19 AM |
8945 | goto error_ret; |
| 8946 | ||
| 425b145b | 8947 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) |
| ba761f19 AM |
8948 | { |
| 8949 | enum elf_ppc64_reloc_type r_type; | |
| 8950 | unsigned long r_symndx; | |
| 8951 | asection *sym_sec; | |
| 8952 | struct elf_link_hash_entry *h; | |
| 8953 | Elf_Internal_Sym *sym; | |
| 8954 | bfd_vma val, addr; | |
| 8955 | ||
| 8956 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 8957 | if (r_type != R_PPC64_ADDR64) | |
| 8958 | continue; | |
| 8959 | ||
| 8960 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 8961 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 8962 | r_symndx, ibfd)) | |
| 8963 | goto error_ret; | |
| 8964 | ||
| 425b145b | 8965 | if (sym_sec == NULL |
| c27b8c2a | 8966 | || sym_sec->output_section == NULL |
| dbaa2011 | 8967 | || discarded_section (sym_sec)) |
| 425b145b AM |
8968 | continue; |
| 8969 | ||
| afe397ea | 8970 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) |
| ba761f19 AM |
8971 | continue; |
| 8972 | ||
| 8973 | if (h != NULL) | |
| bddc25c9 AM |
8974 | { |
| 8975 | if (h->type == STT_GNU_IFUNC) | |
| 8976 | continue; | |
| 8977 | val = h->root.u.def.value; | |
| 8978 | } | |
| ba761f19 | 8979 | else |
| bddc25c9 AM |
8980 | { |
| 8981 | if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 8982 | continue; | |
| 8983 | val = sym->st_value; | |
| 8984 | } | |
| ba761f19 AM |
8985 | val += rel->r_addend; |
| 8986 | val += sym_sec->output_section->vma + sym_sec->output_offset; | |
| 8987 | ||
| 8988 | /* We don't yet know the exact toc pointer value, but we | |
| 8989 | know it will be somewhere in the toc section. Don't | |
| 8990 | optimize if the difference from any possible toc | |
| 8991 | pointer is outside [ff..f80008000, 7fff7fff]. */ | |
| 8992 | addr = toc->output_section->vma + TOC_BASE_OFF; | |
| 8993 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8994 | continue; | |
| 8995 | ||
| 8996 | addr = toc->output_section->vma + toc->output_section->rawsize; | |
| 8997 | if (val - addr + (bfd_vma) 0x80008000 >= (bfd_vma) 1 << 32) | |
| 8998 | continue; | |
| 8999 | ||
| 9000 | if (skip == NULL) | |
| 9001 | { | |
| 9002 | skip = bfd_zmalloc (sizeof (*skip) * (toc->size + 15) / 8); | |
| 9003 | if (skip == NULL) | |
| 9004 | goto error_ret; | |
| 9005 | } | |
| 9006 | ||
| 9007 | skip[rel->r_offset >> 3] | |
| 425b145b | 9008 | |= can_optimize | ((rel - toc_relocs) << 2); |
| ba761f19 | 9009 | } |
| ba761f19 AM |
9010 | } |
| 9011 | ||
| c5614fa4 AM |
9012 | if (skip == NULL) |
| 9013 | continue; | |
| 9014 | ||
| 9015 | used = bfd_zmalloc (sizeof (*used) * (toc->size + 7) / 8); | |
| 9016 | if (used == NULL) | |
| 9017 | { | |
| 9018 | error_ret: | |
| 9019 | if (local_syms != NULL | |
| 9020 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9021 | free (local_syms); | |
| 9022 | if (sec != NULL | |
| 9023 | && relstart != NULL | |
| 9024 | && elf_section_data (sec)->relocs != relstart) | |
| 9025 | free (relstart); | |
| 425b145b AM |
9026 | if (toc_relocs != NULL |
| 9027 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 9028 | free (toc_relocs); | |
| c5614fa4 AM |
9029 | if (skip != NULL) |
| 9030 | free (skip); | |
| 9031 | return FALSE; | |
| 9032 | } | |
| 9033 | ||
| 30038c59 AM |
9034 | /* Now check all kept sections that might reference the toc. |
| 9035 | Check the toc itself last. */ | |
| 9036 | for (sec = (ibfd->sections == toc && toc->next ? toc->next | |
| 9037 | : ibfd->sections); | |
| c5614fa4 | 9038 | sec != NULL; |
| c5614fa4 | 9039 | sec = (sec == toc ? NULL |
| c5614fa4 | 9040 | : sec->next == NULL ? toc |
| 30038c59 | 9041 | : sec->next == toc && toc->next ? toc->next |
| c5614fa4 AM |
9042 | : sec->next)) |
| 9043 | { | |
| 9044 | int repeat; | |
| 9045 | ||
| 9046 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9047 | || discarded_section (sec) |
| c5614fa4 AM |
9048 | || get_opd_info (sec) |
| 9049 | || (sec->flags & SEC_ALLOC) == 0 | |
| 9050 | || (sec->flags & SEC_DEBUGGING) != 0) | |
| 9051 | continue; | |
| 9052 | ||
| 854b41e7 AM |
9053 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, |
| 9054 | info->keep_memory); | |
| c5614fa4 | 9055 | if (relstart == NULL) |
| 2915c55b JK |
9056 | { |
| 9057 | free (used); | |
| 9058 | goto error_ret; | |
| 9059 | } | |
| c5614fa4 AM |
9060 | |
| 9061 | /* Mark toc entries referenced as used. */ | |
| c5614fa4 | 9062 | do |
| d4f1ee75 AM |
9063 | { |
| 9064 | repeat = 0; | |
| 9065 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9066 | { | |
| 9067 | enum elf_ppc64_reloc_type r_type; | |
| 9068 | unsigned long r_symndx; | |
| 9069 | asection *sym_sec; | |
| 9070 | struct elf_link_hash_entry *h; | |
| 9071 | Elf_Internal_Sym *sym; | |
| 9072 | bfd_vma val; | |
| 9073 | enum {no_check, check_lo, check_ha} insn_check; | |
| 98528052 | 9074 | |
| d4f1ee75 AM |
9075 | r_type = ELF64_R_TYPE (rel->r_info); |
| 9076 | switch (r_type) | |
| 9077 | { | |
| 9078 | default: | |
| 9079 | insn_check = no_check; | |
| 9080 | break; | |
| 98528052 | 9081 | |
| d4f1ee75 AM |
9082 | case R_PPC64_GOT_TLSLD16_HA: |
| 9083 | case R_PPC64_GOT_TLSGD16_HA: | |
| 9084 | case R_PPC64_GOT_TPREL16_HA: | |
| 9085 | case R_PPC64_GOT_DTPREL16_HA: | |
| 9086 | case R_PPC64_GOT16_HA: | |
| 9087 | case R_PPC64_TOC16_HA: | |
| 9088 | insn_check = check_ha; | |
| 9089 | break; | |
| 98528052 | 9090 | |
| d4f1ee75 AM |
9091 | case R_PPC64_GOT_TLSLD16_LO: |
| 9092 | case R_PPC64_GOT_TLSGD16_LO: | |
| 9093 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 9094 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 9095 | case R_PPC64_GOT16_LO: | |
| 9096 | case R_PPC64_GOT16_LO_DS: | |
| 9097 | case R_PPC64_TOC16_LO: | |
| 9098 | case R_PPC64_TOC16_LO_DS: | |
| 9099 | insn_check = check_lo; | |
| 9100 | break; | |
| 9101 | } | |
| 560c8763 | 9102 | |
| d4f1ee75 AM |
9103 | if (insn_check != no_check) |
| 9104 | { | |
| 9105 | bfd_vma off = rel->r_offset & ~3; | |
| 9106 | unsigned char buf[4]; | |
| 9107 | unsigned int insn; | |
| c5614fa4 | 9108 | |
| d4f1ee75 AM |
9109 | if (!bfd_get_section_contents (ibfd, sec, buf, off, 4)) |
| 9110 | { | |
| 9111 | free (used); | |
| 9112 | goto error_ret; | |
| 9113 | } | |
| 9114 | insn = bfd_get_32 (ibfd, buf); | |
| 9115 | if (insn_check == check_lo | |
| 9116 | ? !ok_lo_toc_insn (insn) | |
| 9117 | : ((insn & ((0x3f << 26) | 0x1f << 16)) | |
| 9118 | != ((15u << 26) | (2 << 16)) /* addis rt,2,imm */)) | |
| 9119 | { | |
| 9120 | char str[12]; | |
| 9121 | ||
| 9122 | ppc64_elf_tdata (ibfd)->unexpected_toc_insn = 1; | |
| 9123 | sprintf (str, "%#08x", insn); | |
| 9124 | info->callbacks->einfo | |
| 9125 | (_("%P: %H: toc optimization is not supported for" | |
| 9126 | " %s instruction.\n"), | |
| 9127 | ibfd, sec, rel->r_offset & ~3, str); | |
| 9128 | } | |
| 9129 | } | |
| c5614fa4 | 9130 | |
| d4f1ee75 AM |
9131 | switch (r_type) |
| 9132 | { | |
| 9133 | case R_PPC64_TOC16: | |
| 9134 | case R_PPC64_TOC16_LO: | |
| 9135 | case R_PPC64_TOC16_HI: | |
| 9136 | case R_PPC64_TOC16_HA: | |
| 9137 | case R_PPC64_TOC16_DS: | |
| 9138 | case R_PPC64_TOC16_LO_DS: | |
| 9139 | /* In case we're taking addresses of toc entries. */ | |
| 9140 | case R_PPC64_ADDR64: | |
| 9141 | break; | |
| c5614fa4 | 9142 | |
| d4f1ee75 AM |
9143 | default: |
| 9144 | continue; | |
| 9145 | } | |
| c5614fa4 | 9146 | |
| d4f1ee75 AM |
9147 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 9148 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9149 | r_symndx, ibfd)) | |
| 9150 | { | |
| 9151 | free (used); | |
| 9152 | goto error_ret; | |
| 9153 | } | |
| c5614fa4 | 9154 | |
| d4f1ee75 AM |
9155 | if (sym_sec != toc) |
| 9156 | continue; | |
| c5614fa4 | 9157 | |
| d4f1ee75 AM |
9158 | if (h != NULL) |
| 9159 | val = h->root.u.def.value; | |
| 9160 | else | |
| 9161 | val = sym->st_value; | |
| 9162 | val += rel->r_addend; | |
| ba761f19 | 9163 | |
| d4f1ee75 AM |
9164 | if (val >= toc->size) |
| 9165 | continue; | |
| ba761f19 | 9166 | |
| d4f1ee75 AM |
9167 | if ((skip[val >> 3] & can_optimize) != 0) |
| 9168 | { | |
| 9169 | bfd_vma off; | |
| 9170 | unsigned char opc; | |
| 9171 | ||
| 9172 | switch (r_type) | |
| 9173 | { | |
| 9174 | case R_PPC64_TOC16_HA: | |
| ba761f19 | 9175 | break; |
| ba761f19 | 9176 | |
| d4f1ee75 AM |
9177 | case R_PPC64_TOC16_LO_DS: |
| 9178 | off = rel->r_offset; | |
| 9179 | off += (bfd_big_endian (ibfd) ? -2 : 3); | |
| 9180 | if (!bfd_get_section_contents (ibfd, sec, &opc, | |
| 9181 | off, 1)) | |
| 9182 | { | |
| 9183 | free (used); | |
| 9184 | goto error_ret; | |
| 9185 | } | |
| 9186 | if ((opc & (0x3f << 2)) == (58u << 2)) | |
| 9187 | break; | |
| 9188 | /* Fall thru */ | |
| ba761f19 | 9189 | |
| d4f1ee75 AM |
9190 | default: |
| 9191 | /* Wrong sort of reloc, or not a ld. We may | |
| 9192 | as well clear ref_from_discarded too. */ | |
| 9193 | skip[val >> 3] = 0; | |
| 9194 | } | |
| 9195 | } | |
| 9196 | ||
| 9197 | if (sec != toc) | |
| 9198 | used[val >> 3] = 1; | |
| 9199 | /* For the toc section, we only mark as used if this | |
| 9200 | entry itself isn't unused. */ | |
| 9201 | else if ((used[rel->r_offset >> 3] | |
| 9202 | || !(skip[rel->r_offset >> 3] & ref_from_discarded)) | |
| 9203 | && !used[val >> 3]) | |
| 9204 | { | |
| 9205 | /* Do all the relocs again, to catch reference | |
| 9206 | chains. */ | |
| 9207 | repeat = 1; | |
| 9208 | used[val >> 3] = 1; | |
| 9209 | } | |
| 9210 | } | |
| 9211 | } | |
| c5614fa4 | 9212 | while (repeat); |
| 854b41e7 AM |
9213 | |
| 9214 | if (elf_section_data (sec)->relocs != relstart) | |
| 9215 | free (relstart); | |
| c5614fa4 AM |
9216 | } |
| 9217 | ||
| 9218 | /* Merge the used and skip arrays. Assume that TOC | |
| 9219 | doublewords not appearing as either used or unused belong | |
| 9220 | to to an entry more than one doubleword in size. */ | |
| 9221 | for (drop = skip, keep = used, last = 0, some_unused = 0; | |
| 9222 | drop < skip + (toc->size + 7) / 8; | |
| 9223 | ++drop, ++keep) | |
| 9224 | { | |
| 9225 | if (*keep) | |
| 9226 | { | |
| ba761f19 AM |
9227 | *drop &= ~ref_from_discarded; |
| 9228 | if ((*drop & can_optimize) != 0) | |
| 9229 | some_unused = 1; | |
| c5614fa4 AM |
9230 | last = 0; |
| 9231 | } | |
| b140b010 | 9232 | else if ((*drop & ref_from_discarded) != 0) |
| c5614fa4 AM |
9233 | { |
| 9234 | some_unused = 1; | |
| ba761f19 | 9235 | last = ref_from_discarded; |
| c5614fa4 AM |
9236 | } |
| 9237 | else | |
| 9238 | *drop = last; | |
| 9239 | } | |
| 9240 | ||
| 9241 | free (used); | |
| 9242 | ||
| 9243 | if (some_unused) | |
| 9244 | { | |
| 9245 | bfd_byte *contents, *src; | |
| 9246 | unsigned long off; | |
| d62b3684 | 9247 | Elf_Internal_Sym *sym; |
| ba761f19 | 9248 | bfd_boolean local_toc_syms = FALSE; |
| c5614fa4 AM |
9249 | |
| 9250 | /* Shuffle the toc contents, and at the same time convert the | |
| 9251 | skip array from booleans into offsets. */ | |
| 9252 | if (!bfd_malloc_and_get_section (ibfd, toc, &contents)) | |
| 9253 | goto error_ret; | |
| 9254 | ||
| 9255 | elf_section_data (toc)->this_hdr.contents = contents; | |
| 9256 | ||
| 9257 | for (src = contents, off = 0, drop = skip; | |
| 9258 | src < contents + toc->size; | |
| 9259 | src += 8, ++drop) | |
| 9260 | { | |
| ba761f19 AM |
9261 | if ((*drop & (can_optimize | ref_from_discarded)) != 0) |
| 9262 | off += 8; | |
| c5614fa4 AM |
9263 | else if (off != 0) |
| 9264 | { | |
| 9265 | *drop = off; | |
| 9266 | memcpy (src - off, src, 8); | |
| 9267 | } | |
| 9268 | } | |
| 854b41e7 | 9269 | *drop = off; |
| c5614fa4 AM |
9270 | toc->rawsize = toc->size; |
| 9271 | toc->size = src - contents - off; | |
| 9272 | ||
| ba761f19 AM |
9273 | /* Adjust addends for relocs against the toc section sym, |
| 9274 | and optimize any accesses we can. */ | |
| c5614fa4 AM |
9275 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) |
| 9276 | { | |
| 9277 | if (sec->reloc_count == 0 | |
| dbaa2011 | 9278 | || discarded_section (sec)) |
| c5614fa4 AM |
9279 | continue; |
| 9280 | ||
| 9281 | relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL, | |
| 854b41e7 | 9282 | info->keep_memory); |
| c5614fa4 AM |
9283 | if (relstart == NULL) |
| 9284 | goto error_ret; | |
| 9285 | ||
| 9286 | for (rel = relstart; rel < relstart + sec->reloc_count; ++rel) | |
| 9287 | { | |
| 9288 | enum elf_ppc64_reloc_type r_type; | |
| 9289 | unsigned long r_symndx; | |
| 9290 | asection *sym_sec; | |
| 9291 | struct elf_link_hash_entry *h; | |
| 854b41e7 | 9292 | bfd_vma val; |
| c5614fa4 AM |
9293 | |
| 9294 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 9295 | switch (r_type) | |
| 9296 | { | |
| 9297 | default: | |
| 9298 | continue; | |
| 9299 | ||
| 9300 | case R_PPC64_TOC16: | |
| 9301 | case R_PPC64_TOC16_LO: | |
| 9302 | case R_PPC64_TOC16_HI: | |
| 9303 | case R_PPC64_TOC16_HA: | |
| 9304 | case R_PPC64_TOC16_DS: | |
| 9305 | case R_PPC64_TOC16_LO_DS: | |
| 9306 | case R_PPC64_ADDR64: | |
| 9307 | break; | |
| 9308 | } | |
| 9309 | ||
| 9310 | r_symndx = ELF64_R_SYM (rel->r_info); | |
| 9311 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, | |
| 9312 | r_symndx, ibfd)) | |
| 9313 | goto error_ret; | |
| 9314 | ||
| ba761f19 | 9315 | if (sym_sec != toc) |
| c5614fa4 AM |
9316 | continue; |
| 9317 | ||
| ba761f19 AM |
9318 | if (h != NULL) |
| 9319 | val = h->root.u.def.value; | |
| 9320 | else | |
| 9321 | { | |
| 9322 | val = sym->st_value; | |
| 9323 | if (val != 0) | |
| 9324 | local_toc_syms = TRUE; | |
| 9325 | } | |
| 9326 | ||
| 9327 | val += rel->r_addend; | |
| 854b41e7 AM |
9328 | |
| 9329 | if (val > toc->rawsize) | |
| 9330 | val = toc->rawsize; | |
| ba761f19 AM |
9331 | else if ((skip[val >> 3] & ref_from_discarded) != 0) |
| 9332 | continue; | |
| 9333 | else if ((skip[val >> 3] & can_optimize) != 0) | |
| 9334 | { | |
| 9335 | Elf_Internal_Rela *tocrel | |
| 425b145b | 9336 | = toc_relocs + (skip[val >> 3] >> 2); |
| ba761f19 AM |
9337 | unsigned long tsym = ELF64_R_SYM (tocrel->r_info); |
| 9338 | ||
| 9339 | switch (r_type) | |
| 9340 | { | |
| 9341 | case R_PPC64_TOC16_HA: | |
| 9342 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_TOC16_HA); | |
| 9343 | break; | |
| 9344 | ||
| 9345 | case R_PPC64_TOC16_LO_DS: | |
| 9346 | rel->r_info = ELF64_R_INFO (tsym, R_PPC64_LO_DS_OPT); | |
| 9347 | break; | |
| 9348 | ||
| 9349 | default: | |
| 28942f62 AM |
9350 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 9351 | ppc_howto_init (); | |
| b140b010 | 9352 | info->callbacks->einfo |
| bc30df16 | 9353 | (_("%P: %H: %s references " |
| b140b010 AM |
9354 | "optimized away TOC entry\n"), |
| 9355 | ibfd, sec, rel->r_offset, | |
| 9356 | ppc64_elf_howto_table[r_type]->name); | |
| 9357 | bfd_set_error (bfd_error_bad_value); | |
| 9358 | goto error_ret; | |
| ba761f19 AM |
9359 | } |
| 9360 | rel->r_addend = tocrel->r_addend; | |
| 9361 | elf_section_data (sec)->relocs = relstart; | |
| 9362 | continue; | |
| 9363 | } | |
| 9364 | ||
| 9365 | if (h != NULL || sym->st_value != 0) | |
| 9366 | continue; | |
| 854b41e7 AM |
9367 | |
| 9368 | rel->r_addend -= skip[val >> 3]; | |
| 9369 | elf_section_data (sec)->relocs = relstart; | |
| c5614fa4 | 9370 | } |
| 854b41e7 AM |
9371 | |
| 9372 | if (elf_section_data (sec)->relocs != relstart) | |
| 9373 | free (relstart); | |
| c5614fa4 AM |
9374 | } |
| 9375 | ||
| 9376 | /* We shouldn't have local or global symbols defined in the TOC, | |
| 9377 | but handle them anyway. */ | |
| df22d223 AM |
9378 | if (local_syms != NULL) |
| 9379 | for (sym = local_syms; | |
| 9380 | sym < local_syms + symtab_hdr->sh_info; | |
| 9381 | ++sym) | |
| 9382 | if (sym->st_value != 0 | |
| 9383 | && bfd_section_from_elf_index (ibfd, sym->st_shndx) == toc) | |
| 9384 | { | |
| 9385 | unsigned long i; | |
| 854b41e7 | 9386 | |
| df22d223 AM |
9387 | if (sym->st_value > toc->rawsize) |
| 9388 | i = toc->rawsize >> 3; | |
| 9389 | else | |
| 9390 | i = sym->st_value >> 3; | |
| 854b41e7 | 9391 | |
| df22d223 AM |
9392 | if ((skip[i] & (ref_from_discarded | can_optimize)) != 0) |
| 9393 | { | |
| 9394 | if (local_toc_syms) | |
| 9395 | (*_bfd_error_handler) | |
| 9396 | (_("%s defined on removed toc entry"), | |
| 9397 | bfd_elf_sym_name (ibfd, symtab_hdr, sym, NULL)); | |
| 9398 | do | |
| 9399 | ++i; | |
| 9400 | while ((skip[i] & (ref_from_discarded | can_optimize))); | |
| 9401 | sym->st_value = (bfd_vma) i << 3; | |
| 9402 | } | |
| d62b3684 | 9403 | |
| df22d223 AM |
9404 | sym->st_value -= skip[i]; |
| 9405 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9406 | } | |
| c5614fa4 | 9407 | |
| 854b41e7 | 9408 | /* Adjust any global syms defined in this toc input section. */ |
| c5614fa4 AM |
9409 | if (toc_inf.global_toc_syms) |
| 9410 | { | |
| 9411 | toc_inf.toc = toc; | |
| 9412 | toc_inf.skip = skip; | |
| 9413 | toc_inf.global_toc_syms = FALSE; | |
| 9414 | elf_link_hash_traverse (elf_hash_table (info), adjust_toc_syms, | |
| 9415 | &toc_inf); | |
| 9416 | } | |
| 854b41e7 AM |
9417 | |
| 9418 | if (toc->reloc_count != 0) | |
| 9419 | { | |
| d4730f92 | 9420 | Elf_Internal_Shdr *rel_hdr; |
| 854b41e7 AM |
9421 | Elf_Internal_Rela *wrel; |
| 9422 | bfd_size_type sz; | |
| 9423 | ||
| 854b41e7 | 9424 | /* Remove unused toc relocs, and adjust those we keep. */ |
| 28be611c AM |
9425 | if (toc_relocs == NULL) |
| 9426 | toc_relocs = _bfd_elf_link_read_relocs (ibfd, toc, NULL, NULL, | |
| 9427 | info->keep_memory); | |
| 9428 | if (toc_relocs == NULL) | |
| 9429 | goto error_ret; | |
| 9430 | ||
| 425b145b AM |
9431 | wrel = toc_relocs; |
| 9432 | for (rel = toc_relocs; rel < toc_relocs + toc->reloc_count; ++rel) | |
| ba761f19 AM |
9433 | if ((skip[rel->r_offset >> 3] |
| 9434 | & (ref_from_discarded | can_optimize)) == 0) | |
| 854b41e7 AM |
9435 | { |
| 9436 | wrel->r_offset = rel->r_offset - skip[rel->r_offset >> 3]; | |
| 9437 | wrel->r_info = rel->r_info; | |
| 9438 | wrel->r_addend = rel->r_addend; | |
| 9439 | ++wrel; | |
| 9440 | } | |
| 9441 | else if (!dec_dynrel_count (rel->r_info, toc, info, | |
| 9442 | &local_syms, NULL, NULL)) | |
| 9443 | goto error_ret; | |
| 9444 | ||
| 425b145b AM |
9445 | elf_section_data (toc)->relocs = toc_relocs; |
| 9446 | toc->reloc_count = wrel - toc_relocs; | |
| d4730f92 BS |
9447 | rel_hdr = _bfd_elf_single_rel_hdr (toc); |
| 9448 | sz = rel_hdr->sh_entsize; | |
| 9449 | rel_hdr->sh_size = toc->reloc_count * sz; | |
| 854b41e7 | 9450 | } |
| c5614fa4 | 9451 | } |
| 28be611c AM |
9452 | else if (toc_relocs != NULL |
| 9453 | && elf_section_data (toc)->relocs != toc_relocs) | |
| 425b145b | 9454 | free (toc_relocs); |
| c5614fa4 AM |
9455 | |
| 9456 | if (local_syms != NULL | |
| 9457 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 9458 | { | |
| 9459 | if (!info->keep_memory) | |
| 9460 | free (local_syms); | |
| 9461 | else | |
| 9462 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 9463 | } | |
| 9464 | free (skip); | |
| 9465 | } | |
| 9466 | ||
| 9467 | return TRUE; | |
| 9468 | } | |
| 9469 | ||
| 1bbe0902 AM |
9470 | /* Return true iff input section I references the TOC using |
| 9471 | instructions limited to +/-32k offsets. */ | |
| 9472 | ||
| 9473 | bfd_boolean | |
| 9474 | ppc64_elf_has_small_toc_reloc (asection *i) | |
| 9475 | { | |
| 9476 | return (is_ppc64_elf (i->owner) | |
| 9477 | && ppc64_elf_tdata (i->owner)->has_small_toc_reloc); | |
| 9478 | } | |
| 9479 | ||
| 927be08e AM |
9480 | /* Allocate space for one GOT entry. */ |
| 9481 | ||
| 9482 | static void | |
| 9483 | allocate_got (struct elf_link_hash_entry *h, | |
| 9484 | struct bfd_link_info *info, | |
| 9485 | struct got_entry *gent) | |
| 9486 | { | |
| 9487 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 9488 | bfd_boolean dyn; | |
| 9489 | struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) h; | |
| 9490 | int entsize = (gent->tls_type & eh->tls_mask & (TLS_GD | TLS_LD) | |
| 9491 | ? 16 : 8); | |
| 9492 | int rentsize = (gent->tls_type & eh->tls_mask & TLS_GD | |
| 9493 | ? 2 : 1) * sizeof (Elf64_External_Rela); | |
| 9494 | asection *got = ppc64_elf_tdata (gent->owner)->got; | |
| 9495 | ||
| 9496 | gent->got.offset = got->size; | |
| 9497 | got->size += entsize; | |
| 9498 | ||
| 9499 | dyn = htab->elf.dynamic_sections_created; | |
| 19e08130 | 9500 | if (h->type == STT_GNU_IFUNC) |
| 927be08e | 9501 | { |
| 33e44f2e | 9502 | htab->elf.irelplt->size += rentsize; |
| 19e08130 | 9503 | htab->got_reli_size += rentsize; |
| 927be08e | 9504 | } |
| 0e1862bb | 9505 | else if ((bfd_link_pic (info) |
| 19e08130 AM |
9506 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)) |
| 9507 | && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
| 9508 | || h->root.type != bfd_link_hash_undefweak)) | |
| 927be08e | 9509 | { |
| 19e08130 | 9510 | asection *relgot = ppc64_elf_tdata (gent->owner)->relgot; |
| 927be08e | 9511 | relgot->size += rentsize; |
| 927be08e AM |
9512 | } |
| 9513 | } | |
| 9514 | ||
| 7865406b AM |
9515 | /* This function merges got entries in the same toc group. */ |
| 9516 | ||
| 9517 | static void | |
| 9518 | merge_got_entries (struct got_entry **pent) | |
| 9519 | { | |
| 9520 | struct got_entry *ent, *ent2; | |
| 9521 | ||
| 9522 | for (ent = *pent; ent != NULL; ent = ent->next) | |
| 9523 | if (!ent->is_indirect) | |
| 9524 | for (ent2 = ent->next; ent2 != NULL; ent2 = ent2->next) | |
| 9525 | if (!ent2->is_indirect | |
| 9526 | && ent2->addend == ent->addend | |
| 9527 | && ent2->tls_type == ent->tls_type | |
| 9528 | && elf_gp (ent2->owner) == elf_gp (ent->owner)) | |
| 9529 | { | |
| 9530 | ent2->is_indirect = TRUE; | |
| 9531 | ent2->got.ent = ent; | |
| 9532 | } | |
| 9533 | } | |
| 9534 | ||
| 65f38f15 AM |
9535 | /* Allocate space in .plt, .got and associated reloc sections for |
| 9536 | dynamic relocs. */ | |
| 5bd4f169 | 9537 | |
| b34976b6 | 9538 | static bfd_boolean |
| 4ce794b7 | 9539 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
| 5bd4f169 | 9540 | { |
| 65f38f15 AM |
9541 | struct bfd_link_info *info; |
| 9542 | struct ppc_link_hash_table *htab; | |
| 5bd4f169 | 9543 | asection *s; |
| 65f38f15 | 9544 | struct ppc_link_hash_entry *eh; |
| 6061a67d | 9545 | struct elf_dyn_relocs *p; |
| 0b8bcf0d | 9546 | struct got_entry **pgent, *gent; |
| 5bd4f169 | 9547 | |
| e92d460e | 9548 | if (h->root.type == bfd_link_hash_indirect) |
| b34976b6 | 9549 | return TRUE; |
| 5bd4f169 | 9550 | |
| 65f38f15 AM |
9551 | info = (struct bfd_link_info *) inf; |
| 9552 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9553 | if (htab == NULL) |
| 9554 | return FALSE; | |
| 5bd4f169 | 9555 | |
| e054468f AM |
9556 | if ((htab->elf.dynamic_sections_created |
| 9557 | && h->dynindx != -1 | |
| 0e1862bb | 9558 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
| e054468f | 9559 | || h->type == STT_GNU_IFUNC) |
| 5bd4f169 | 9560 | { |
| 411e1bfb AM |
9561 | struct plt_entry *pent; |
| 9562 | bfd_boolean doneone = FALSE; | |
| 9563 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9564 | if (pent->plt.refcount > 0) | |
| 9565 | { | |
| 25f23106 AM |
9566 | if (!htab->elf.dynamic_sections_created |
| 9567 | || h->dynindx == -1) | |
| e054468f | 9568 | { |
| 33e44f2e | 9569 | s = htab->elf.iplt; |
| e054468f | 9570 | pent->plt.offset = s->size; |
| b9e5796b | 9571 | s->size += PLT_ENTRY_SIZE (htab); |
| 33e44f2e | 9572 | s = htab->elf.irelplt; |
| e054468f AM |
9573 | } |
| 9574 | else | |
| 9575 | { | |
| 9576 | /* If this is the first .plt entry, make room for the special | |
| 9577 | first entry. */ | |
| 33e44f2e | 9578 | s = htab->elf.splt; |
| e054468f | 9579 | if (s->size == 0) |
| b9e5796b | 9580 | s->size += PLT_INITIAL_ENTRY_SIZE (htab); |
| e054468f AM |
9581 | |
| 9582 | pent->plt.offset = s->size; | |
| 9583 | ||
| 9584 | /* Make room for this entry. */ | |
| b9e5796b | 9585 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f AM |
9586 | |
| 9587 | /* Make room for the .glink code. */ | |
| 9588 | s = htab->glink; | |
| 9589 | if (s->size == 0) | |
| 9590 | s->size += GLINK_CALL_STUB_SIZE; | |
| b9e5796b AM |
9591 | if (htab->opd_abi) |
| 9592 | { | |
| 9593 | /* We need bigger stubs past index 32767. */ | |
| 9594 | if (s->size >= GLINK_CALL_STUB_SIZE + 32768*2*4) | |
| 9595 | s->size += 4; | |
| 9596 | s->size += 2*4; | |
| 9597 | } | |
| 9598 | else | |
| e054468f | 9599 | s->size += 4; |
| e054468f AM |
9600 | |
| 9601 | /* We also need to make an entry in the .rela.plt section. */ | |
| 33e44f2e | 9602 | s = htab->elf.srelplt; |
| e054468f | 9603 | } |
| eea6121a | 9604 | s->size += sizeof (Elf64_External_Rela); |
| 411e1bfb AM |
9605 | doneone = TRUE; |
| 9606 | } | |
| 9607 | else | |
| 9608 | pent->plt.offset = (bfd_vma) -1; | |
| 9609 | if (!doneone) | |
| 65f38f15 | 9610 | { |
| 411e1bfb | 9611 | h->plt.plist = NULL; |
| f5385ebf | 9612 | h->needs_plt = 0; |
| 65f38f15 AM |
9613 | } |
| 9614 | } | |
| 9615 | else | |
| 9616 | { | |
| 411e1bfb | 9617 | h->plt.plist = NULL; |
| f5385ebf | 9618 | h->needs_plt = 0; |
| 65f38f15 AM |
9619 | } |
| 9620 | ||
| 951fd09b AM |
9621 | eh = (struct ppc_link_hash_entry *) h; |
| 9622 | /* Run through the TLS GD got entries first if we're changing them | |
| 9623 | to TPREL. */ | |
| e7b938ca | 9624 | if ((eh->tls_mask & TLS_TPRELGD) != 0) |
| 951fd09b AM |
9625 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 9626 | if (gent->got.refcount > 0 | |
| 9627 | && (gent->tls_type & TLS_GD) != 0) | |
| 9628 | { | |
| 9629 | /* This was a GD entry that has been converted to TPREL. If | |
| 9630 | there happens to be a TPREL entry we can use that one. */ | |
| 9631 | struct got_entry *ent; | |
| 9632 | for (ent = h->got.glist; ent != NULL; ent = ent->next) | |
| 9633 | if (ent->got.refcount > 0 | |
| 9634 | && (ent->tls_type & TLS_TPREL) != 0 | |
| e717da7e AM |
9635 | && ent->addend == gent->addend |
| 9636 | && ent->owner == gent->owner) | |
| 951fd09b AM |
9637 | { |
| 9638 | gent->got.refcount = 0; | |
| 9639 | break; | |
| 9640 | } | |
| 9641 | ||
| 9642 | /* If not, then we'll be using our own TPREL entry. */ | |
| 9643 | if (gent->got.refcount != 0) | |
| 9644 | gent->tls_type = TLS_TLS | TLS_TPREL; | |
| 9645 | } | |
| 9646 | ||
| 7865406b AM |
9647 | /* Remove any list entry that won't generate a word in the GOT before |
| 9648 | we call merge_got_entries. Otherwise we risk merging to empty | |
| 9649 | entries. */ | |
| 0b8bcf0d AM |
9650 | pgent = &h->got.glist; |
| 9651 | while ((gent = *pgent) != NULL) | |
| 411e1bfb | 9652 | if (gent->got.refcount > 0) |
| 7865406b AM |
9653 | { |
| 9654 | if ((gent->tls_type & TLS_LD) != 0 | |
| 9655 | && !h->def_dynamic) | |
| 9656 | { | |
| 9657 | ppc64_tlsld_got (gent->owner)->got.refcount += 1; | |
| 9658 | *pgent = gent->next; | |
| 9659 | } | |
| 9660 | else | |
| 9661 | pgent = &gent->next; | |
| 9662 | } | |
| 9663 | else | |
| 9664 | *pgent = gent->next; | |
| 9665 | ||
| 9666 | if (!htab->do_multi_toc) | |
| 9667 | merge_got_entries (&h->got.glist); | |
| 9668 | ||
| 9669 | for (gent = h->got.glist; gent != NULL; gent = gent->next) | |
| 9670 | if (!gent->is_indirect) | |
| 411e1bfb AM |
9671 | { |
| 9672 | /* Make sure this symbol is output as a dynamic symbol. | |
| 951fd09b AM |
9673 | Undefined weak syms won't yet be marked as dynamic, |
| 9674 | nor will all TLS symbols. */ | |
| 411e1bfb | 9675 | if (h->dynindx == -1 |
| b099ab9f | 9676 | && !h->forced_local |
| 25f23106 | 9677 | && h->type != STT_GNU_IFUNC |
| b099ab9f | 9678 | && htab->elf.dynamic_sections_created) |
| 411e1bfb | 9679 | { |
| c152c796 | 9680 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 411e1bfb AM |
9681 | return FALSE; |
| 9682 | } | |
| 65f38f15 | 9683 | |
| 0c8d6e5c | 9684 | if (!is_ppc64_elf (gent->owner)) |
| 927be08e | 9685 | abort (); |
| 0ffa91dd | 9686 | |
| 927be08e | 9687 | allocate_got (h, info, gent); |
| 411e1bfb | 9688 | } |
| 65f38f15 | 9689 | |
| b099ab9f | 9690 | if (eh->dyn_relocs == NULL |
| 25f23106 | 9691 | || (!htab->elf.dynamic_sections_created |
| 14b5f73f | 9692 | && h->type != STT_GNU_IFUNC)) |
| b34976b6 | 9693 | return TRUE; |
| 65f38f15 AM |
9694 | |
| 9695 | /* In the shared -Bsymbolic case, discard space allocated for | |
| 9696 | dynamic pc-relative relocs against symbols which turn out to be | |
| 9697 | defined in regular objects. For the normal shared case, discard | |
| 9698 | space for relocs that have become local due to symbol visibility | |
| 9699 | changes. */ | |
| 9700 | ||
| 0e1862bb | 9701 | if (bfd_link_pic (info)) |
| 65f38f15 | 9702 | { |
| 9c7a29a3 | 9703 | /* Relocs that use pc_count are those that appear on a call insn, |
| 1d483afe | 9704 | or certain REL relocs (see must_be_dyn_reloc) that can be |
| 9c7a29a3 AM |
9705 | generated via assembly. We want calls to protected symbols to |
| 9706 | resolve directly to the function rather than going via the plt. | |
| 9707 | If people want function pointer comparisons to work as expected | |
| 9708 | then they should avoid writing weird assembly. */ | |
| 09695f56 | 9709 | if (SYMBOL_CALLS_LOCAL (info, h)) |
| 65f38f15 | 9710 | { |
| 6061a67d | 9711 | struct elf_dyn_relocs **pp; |
| 65f38f15 AM |
9712 | |
| 9713 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; ) | |
| 5bd4f169 | 9714 | { |
| 65f38f15 AM |
9715 | p->count -= p->pc_count; |
| 9716 | p->pc_count = 0; | |
| 9717 | if (p->count == 0) | |
| 9718 | *pp = p->next; | |
| 9719 | else | |
| 9720 | pp = &p->next; | |
| 5bd4f169 | 9721 | } |
| 65f38f15 | 9722 | } |
| 4e795f50 AM |
9723 | |
| 9724 | /* Also discard relocs on undefined weak syms with non-default | |
| 9725 | visibility. */ | |
| cab87ef9 AM |
9726 | if (eh->dyn_relocs != NULL |
| 9727 | && h->root.type == bfd_link_hash_undefweak) | |
| dfbb6ac9 AM |
9728 | { |
| 9729 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
| 9730 | eh->dyn_relocs = NULL; | |
| 9731 | ||
| 9732 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9733 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9734 | else if (h->dynindx == -1 | |
| 9735 | && !h->forced_local) | |
| 9736 | { | |
| 9737 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
| 9738 | return FALSE; | |
| 9739 | } | |
| 9740 | } | |
| 65f38f15 | 9741 | } |
| 25f23106 AM |
9742 | else if (h->type == STT_GNU_IFUNC) |
| 9743 | { | |
| 9744 | if (!h->non_got_ref) | |
| 9745 | eh->dyn_relocs = NULL; | |
| 9746 | } | |
| f4656909 | 9747 | else if (ELIMINATE_COPY_RELOCS) |
| 65f38f15 AM |
9748 | { |
| 9749 | /* For the non-shared case, discard space for relocs against | |
| 9750 | symbols which turn out to need copy relocs or are not | |
| 9751 | dynamic. */ | |
| 9752 | ||
| f5385ebf | 9753 | if (!h->non_got_ref |
| f5385ebf | 9754 | && !h->def_regular) |
| 65f38f15 AM |
9755 | { |
| 9756 | /* Make sure this symbol is output as a dynamic symbol. | |
| 9757 | Undefined weak syms won't yet be marked as dynamic. */ | |
| 9758 | if (h->dynindx == -1 | |
| f5385ebf | 9759 | && !h->forced_local) |
| 65f38f15 | 9760 | { |
| c152c796 | 9761 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| b34976b6 | 9762 | return FALSE; |
| 65f38f15 AM |
9763 | } |
| 9764 | ||
| 9765 | /* If that succeeded, we know we'll be keeping all the | |
| 9766 | relocs. */ | |
| 9767 | if (h->dynindx != -1) | |
| 9768 | goto keep; | |
| 9769 | } | |
| 9770 | ||
| 9771 | eh->dyn_relocs = NULL; | |
| 9772 | ||
| ec338859 | 9773 | keep: ; |
| 65f38f15 AM |
9774 | } |
| 9775 | ||
| 9776 | /* Finally, allocate space. */ | |
| 9777 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
| 9778 | { | |
| 9779 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
| 19e08130 | 9780 | if (eh->elf.type == STT_GNU_IFUNC) |
| 33e44f2e | 9781 | sreloc = htab->elf.irelplt; |
| eea6121a | 9782 | sreloc->size += p->count * sizeof (Elf64_External_Rela); |
| 65f38f15 AM |
9783 | } |
| 9784 | ||
| b34976b6 | 9785 | return TRUE; |
| 65f38f15 AM |
9786 | } |
| 9787 | ||
| a345bc8d AM |
9788 | /* Called via elf_link_hash_traverse from ppc64_elf_size_dynamic_sections |
| 9789 | to set up space for global entry stubs. These are put in glink, | |
| 9790 | after the branch table. */ | |
| 65f38f15 | 9791 | |
| b34976b6 | 9792 | static bfd_boolean |
| a345bc8d | 9793 | size_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) |
| 65f38f15 | 9794 | { |
| a345bc8d AM |
9795 | struct bfd_link_info *info; |
| 9796 | struct ppc_link_hash_table *htab; | |
| 9797 | struct plt_entry *pent; | |
| 9798 | asection *s; | |
| 65f38f15 | 9799 | |
| a345bc8d AM |
9800 | if (h->root.type == bfd_link_hash_indirect) |
| 9801 | return TRUE; | |
| 65f38f15 | 9802 | |
| a345bc8d AM |
9803 | if (!h->pointer_equality_needed) |
| 9804 | return TRUE; | |
| 65f38f15 | 9805 | |
| a345bc8d AM |
9806 | if (h->def_regular) |
| 9807 | return TRUE; | |
| 65f38f15 | 9808 | |
| a345bc8d AM |
9809 | info = inf; |
| 9810 | htab = ppc_hash_table (info); | |
| 9811 | if (htab == NULL) | |
| 9812 | return FALSE; | |
| 9813 | ||
| 9814 | s = htab->glink; | |
| 9815 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 9816 | if (pent->plt.offset != (bfd_vma) -1 | |
| 9817 | && pent->addend == 0) | |
| 9818 | { | |
| afe397ea AM |
9819 | /* For ELFv2, if this symbol is not defined in a regular file |
| 9820 | and we are not generating a shared library or pie, then we | |
| 9821 | need to define the symbol in the executable on a call stub. | |
| 9822 | This is to avoid text relocations. */ | |
| a345bc8d | 9823 | s->size = (s->size + 15) & -16; |
| afe397ea AM |
9824 | h->root.u.def.section = s; |
| 9825 | h->root.u.def.value = s->size; | |
| a345bc8d AM |
9826 | s->size += 16; |
| 9827 | break; | |
| 9828 | } | |
| 9829 | return TRUE; | |
| 9830 | } | |
| 9831 | ||
| 9832 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
| 9833 | read-only sections. */ | |
| 9834 | ||
| 9835 | static bfd_boolean | |
| 9836 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info) | |
| 9837 | { | |
| 9838 | if (h->root.type == bfd_link_hash_indirect) | |
| 9839 | return TRUE; | |
| 9840 | ||
| 9841 | if (readonly_dynrelocs (h)) | |
| 9842 | { | |
| 9843 | ((struct bfd_link_info *) info)->flags |= DF_TEXTREL; | |
| 9844 | ||
| 9845 | /* Not an error, just cut short the traversal. */ | |
| 9846 | return FALSE; | |
| 65f38f15 | 9847 | } |
| b34976b6 | 9848 | return TRUE; |
| 65f38f15 AM |
9849 | } |
| 9850 | ||
| 9851 | /* Set the sizes of the dynamic sections. */ | |
| 9852 | ||
| b34976b6 | 9853 | static bfd_boolean |
| ee67d69a | 9854 | ppc64_elf_size_dynamic_sections (bfd *output_bfd, |
| 4ce794b7 | 9855 | struct bfd_link_info *info) |
| 65f38f15 AM |
9856 | { |
| 9857 | struct ppc_link_hash_table *htab; | |
| 9858 | bfd *dynobj; | |
| 9859 | asection *s; | |
| b34976b6 | 9860 | bfd_boolean relocs; |
| 65f38f15 | 9861 | bfd *ibfd; |
| 7865406b | 9862 | struct got_entry *first_tlsld; |
| 65f38f15 AM |
9863 | |
| 9864 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
9865 | if (htab == NULL) |
| 9866 | return FALSE; | |
| 9867 | ||
| 65f38f15 AM |
9868 | dynobj = htab->elf.dynobj; |
| 9869 | if (dynobj == NULL) | |
| 9870 | abort (); | |
| 9871 | ||
| 9872 | if (htab->elf.dynamic_sections_created) | |
| 9873 | { | |
| 9874 | /* Set the contents of the .interp section to the interpreter. */ | |
| 9b8b325a | 9875 | if (bfd_link_executable (info) && !info->nointerp) |
| 65f38f15 | 9876 | { |
| 3d4d4302 | 9877 | s = bfd_get_linker_section (dynobj, ".interp"); |
| 65f38f15 AM |
9878 | if (s == NULL) |
| 9879 | abort (); | |
| eea6121a | 9880 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 65f38f15 AM |
9881 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 9882 | } | |
| 9883 | } | |
| 9884 | ||
| 9885 | /* Set up .got offsets for local syms, and space for local dynamic | |
| 9886 | relocs. */ | |
| c72f2fb2 | 9887 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 65f38f15 | 9888 | { |
| 411e1bfb AM |
9889 | struct got_entry **lgot_ents; |
| 9890 | struct got_entry **end_lgot_ents; | |
| e054468f AM |
9891 | struct plt_entry **local_plt; |
| 9892 | struct plt_entry **end_local_plt; | |
| f961d9dd | 9893 | unsigned char *lgot_masks; |
| 65f38f15 AM |
9894 | bfd_size_type locsymcount; |
| 9895 | Elf_Internal_Shdr *symtab_hdr; | |
| 65f38f15 | 9896 | |
| 0c8d6e5c | 9897 | if (!is_ppc64_elf (ibfd)) |
| 65f38f15 AM |
9898 | continue; |
| 9899 | ||
| 9900 | for (s = ibfd->sections; s != NULL; s = s->next) | |
| 9901 | { | |
| 19e08130 | 9902 | struct ppc_dyn_relocs *p; |
| 65f38f15 | 9903 | |
| 6edfbbad | 9904 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) |
| 65f38f15 | 9905 | { |
| ec338859 AM |
9906 | if (!bfd_is_abs_section (p->sec) |
| 9907 | && bfd_is_abs_section (p->sec->output_section)) | |
| 9908 | { | |
| 9909 | /* Input section has been discarded, either because | |
| 9910 | it is a copy of a linkonce section or due to | |
| 9911 | linker script /DISCARD/, so we'll be discarding | |
| 9912 | the relocs too. */ | |
| 9913 | } | |
| 248866a8 | 9914 | else if (p->count != 0) |
| ec338859 | 9915 | { |
| 19e08130 AM |
9916 | asection *srel = elf_section_data (p->sec)->sreloc; |
| 9917 | if (p->ifunc) | |
| 33e44f2e | 9918 | srel = htab->elf.irelplt; |
| eea6121a | 9919 | srel->size += p->count * sizeof (Elf64_External_Rela); |
| 248866a8 AM |
9920 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 9921 | info->flags |= DF_TEXTREL; | |
| ec338859 | 9922 | } |
| 65f38f15 AM |
9923 | } |
| 9924 | } | |
| 9925 | ||
| 411e1bfb AM |
9926 | lgot_ents = elf_local_got_ents (ibfd); |
| 9927 | if (!lgot_ents) | |
| 65f38f15 AM |
9928 | continue; |
| 9929 | ||
| 0ffa91dd | 9930 | symtab_hdr = &elf_symtab_hdr (ibfd); |
| 65f38f15 | 9931 | locsymcount = symtab_hdr->sh_info; |
| 411e1bfb | 9932 | end_lgot_ents = lgot_ents + locsymcount; |
| e054468f AM |
9933 | local_plt = (struct plt_entry **) end_lgot_ents; |
| 9934 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 9935 | lgot_masks = (unsigned char *) end_local_plt; |
| e717da7e | 9936 | s = ppc64_elf_tdata (ibfd)->got; |
| e7b938ca | 9937 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 65f38f15 | 9938 | { |
| 0b8bcf0d | 9939 | struct got_entry **pent, *ent; |
| 411e1bfb | 9940 | |
| 0b8bcf0d AM |
9941 | pent = lgot_ents; |
| 9942 | while ((ent = *pent) != NULL) | |
| 411e1bfb AM |
9943 | if (ent->got.refcount > 0) |
| 9944 | { | |
| e7b938ca | 9945 | if ((ent->tls_type & *lgot_masks & TLS_LD) != 0) |
| 411e1bfb | 9946 | { |
| 927be08e | 9947 | ppc64_tlsld_got (ibfd)->got.refcount += 1; |
| 0b8bcf0d | 9948 | *pent = ent->next; |
| 411e1bfb AM |
9949 | } |
| 9950 | else | |
| 9951 | { | |
| 19e08130 AM |
9952 | unsigned int ent_size = 8; |
| 9953 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 9954 | ||
| eea6121a | 9955 | ent->got.offset = s->size; |
| e7b938ca | 9956 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) |
| 927be08e | 9957 | { |
| 19e08130 AM |
9958 | ent_size *= 2; |
| 9959 | rel_size *= 2; | |
| 9960 | } | |
| 9961 | s->size += ent_size; | |
| 9962 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 9963 | { | |
| 33e44f2e | 9964 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
9965 | htab->got_reli_size += rel_size; |
| 9966 | } | |
| 0e1862bb | 9967 | else if (bfd_link_pic (info)) |
| 19e08130 AM |
9968 | { |
| 9969 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 9970 | srel->size += rel_size; | |
| 927be08e | 9971 | } |
| 0b8bcf0d | 9972 | pent = &ent->next; |
| 411e1bfb AM |
9973 | } |
| 9974 | } | |
| 9975 | else | |
| 0b8bcf0d | 9976 | *pent = ent->next; |
| 65f38f15 | 9977 | } |
| e054468f AM |
9978 | |
| 9979 | /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */ | |
| 9980 | for (; local_plt < end_local_plt; ++local_plt) | |
| 9981 | { | |
| 9982 | struct plt_entry *ent; | |
| 9983 | ||
| 9984 | for (ent = *local_plt; ent != NULL; ent = ent->next) | |
| 9985 | if (ent->plt.refcount > 0) | |
| 9986 | { | |
| 33e44f2e | 9987 | s = htab->elf.iplt; |
| e054468f | 9988 | ent->plt.offset = s->size; |
| b9e5796b | 9989 | s->size += PLT_ENTRY_SIZE (htab); |
| e054468f | 9990 | |
| 33e44f2e | 9991 | htab->elf.irelplt->size += sizeof (Elf64_External_Rela); |
| e054468f AM |
9992 | } |
| 9993 | else | |
| 9994 | ent->plt.offset = (bfd_vma) -1; | |
| 9995 | } | |
| 65f38f15 AM |
9996 | } |
| 9997 | ||
| 9998 | /* Allocate global sym .plt and .got entries, and space for global | |
| 9999 | sym dynamic relocs. */ | |
| 4ce794b7 | 10000 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); |
| a345bc8d AM |
10001 | /* Stash the end of glink branch table. */ |
| 10002 | if (htab->glink != NULL) | |
| 10003 | htab->glink->rawsize = htab->glink->size; | |
| 10004 | ||
| 0e1862bb | 10005 | if (!htab->opd_abi && !bfd_link_pic (info)) |
| a345bc8d | 10006 | elf_link_hash_traverse (&htab->elf, size_global_entry_stubs, info); |
| 65f38f15 | 10007 | |
| 7865406b | 10008 | first_tlsld = NULL; |
| c72f2fb2 | 10009 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 102890f0 | 10010 | { |
| 7865406b AM |
10011 | struct got_entry *ent; |
| 10012 | ||
| 0c8d6e5c | 10013 | if (!is_ppc64_elf (ibfd)) |
| 102890f0 AM |
10014 | continue; |
| 10015 | ||
| 7865406b AM |
10016 | ent = ppc64_tlsld_got (ibfd); |
| 10017 | if (ent->got.refcount > 0) | |
| 102890f0 | 10018 | { |
| 7865406b | 10019 | if (!htab->do_multi_toc && first_tlsld != NULL) |
| 102890f0 | 10020 | { |
| 7865406b AM |
10021 | ent->is_indirect = TRUE; |
| 10022 | ent->got.ent = first_tlsld; | |
| 10023 | } | |
| 10024 | else | |
| 10025 | { | |
| 10026 | if (first_tlsld == NULL) | |
| 10027 | first_tlsld = ent; | |
| 10028 | s = ppc64_elf_tdata (ibfd)->got; | |
| 10029 | ent->got.offset = s->size; | |
| 10030 | ent->owner = ibfd; | |
| 10031 | s->size += 16; | |
| 0e1862bb | 10032 | if (bfd_link_pic (info)) |
| 7865406b AM |
10033 | { |
| 10034 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 10035 | srel->size += sizeof (Elf64_External_Rela); | |
| 10036 | } | |
| 102890f0 AM |
10037 | } |
| 10038 | } | |
| 10039 | else | |
| 7865406b | 10040 | ent->got.offset = (bfd_vma) -1; |
| 102890f0 AM |
10041 | } |
| 10042 | ||
| 65f38f15 AM |
10043 | /* We now have determined the sizes of the various dynamic sections. |
| 10044 | Allocate memory for them. */ | |
| b34976b6 | 10045 | relocs = FALSE; |
| 65f38f15 AM |
10046 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 10047 | { | |
| 10048 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
| 10049 | continue; | |
| 10050 | ||
| 4ce794b7 | 10051 | if (s == htab->brlt || s == htab->relbrlt) |
| 721956f4 AM |
10052 | /* These haven't been allocated yet; don't strip. */ |
| 10053 | continue; | |
| 33e44f2e AM |
10054 | else if (s == htab->elf.sgot |
| 10055 | || s == htab->elf.splt | |
| 10056 | || s == htab->elf.iplt | |
| c456f082 AM |
10057 | || s == htab->glink |
| 10058 | || s == htab->dynbss) | |
| 65f38f15 AM |
10059 | { |
| 10060 | /* Strip this section if we don't need it; see the | |
| 10061 | comment below. */ | |
| 5bd4f169 | 10062 | } |
| 58d180e8 AM |
10063 | else if (s == htab->glink_eh_frame) |
| 10064 | { | |
| 10065 | if (!bfd_is_abs_section (s->output_section)) | |
| 10066 | /* Not sized yet. */ | |
| 10067 | continue; | |
| 10068 | } | |
| 70cc837d | 10069 | else if (CONST_STRNEQ (s->name, ".rela")) |
| 5bd4f169 | 10070 | { |
| c456f082 | 10071 | if (s->size != 0) |
| 5bd4f169 | 10072 | { |
| 33e44f2e | 10073 | if (s != htab->elf.srelplt) |
| b34976b6 | 10074 | relocs = TRUE; |
| 5bd4f169 AM |
10075 | |
| 10076 | /* We use the reloc_count field as a counter if we need | |
| 10077 | to copy relocs into the output file. */ | |
| 10078 | s->reloc_count = 0; | |
| 10079 | } | |
| 10080 | } | |
| 65f38f15 | 10081 | else |
| 5bd4f169 AM |
10082 | { |
| 10083 | /* It's not one of our sections, so don't allocate space. */ | |
| 10084 | continue; | |
| 10085 | } | |
| 10086 | ||
| eea6121a | 10087 | if (s->size == 0) |
| 5bd4f169 | 10088 | { |
| c456f082 AM |
10089 | /* If we don't need this section, strip it from the |
| 10090 | output file. This is mostly to handle .rela.bss and | |
| 10091 | .rela.plt. We must create both sections in | |
| 10092 | create_dynamic_sections, because they must be created | |
| 10093 | before the linker maps input sections to output | |
| 10094 | sections. The linker does that before | |
| 10095 | adjust_dynamic_symbol is called, and it is that | |
| 10096 | function which decides whether anything needs to go | |
| 10097 | into these sections. */ | |
| 8423293d | 10098 | s->flags |= SEC_EXCLUDE; |
| 5bd4f169 AM |
10099 | continue; |
| 10100 | } | |
| 10101 | ||
| c456f082 | 10102 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 5f333394 AM |
10103 | continue; |
| 10104 | ||
| 65f38f15 AM |
10105 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 10106 | here in case unused entries are not reclaimed before the | |
| 10107 | section's contents are written out. This should not happen, | |
| 411e1bfb AM |
10108 | but this way if it does we get a R_PPC64_NONE reloc in .rela |
| 10109 | sections instead of garbage. | |
| 10110 | We also rely on the section contents being zero when writing | |
| 10111 | the GOT. */ | |
| eea6121a | 10112 | s->contents = bfd_zalloc (dynobj, s->size); |
| 65f38f15 | 10113 | if (s->contents == NULL) |
| b34976b6 | 10114 | return FALSE; |
| 5bd4f169 AM |
10115 | } |
| 10116 | ||
| c72f2fb2 | 10117 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| e717da7e | 10118 | { |
| 0c8d6e5c | 10119 | if (!is_ppc64_elf (ibfd)) |
| 7b53ace3 AM |
10120 | continue; |
| 10121 | ||
| e717da7e | 10122 | s = ppc64_elf_tdata (ibfd)->got; |
| 33e44f2e | 10123 | if (s != NULL && s != htab->elf.sgot) |
| e717da7e | 10124 | { |
| eea6121a | 10125 | if (s->size == 0) |
| 8423293d | 10126 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
10127 | else |
| 10128 | { | |
| eea6121a | 10129 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
10130 | if (s->contents == NULL) |
| 10131 | return FALSE; | |
| 10132 | } | |
| 10133 | } | |
| 10134 | s = ppc64_elf_tdata (ibfd)->relgot; | |
| 10135 | if (s != NULL) | |
| 10136 | { | |
| eea6121a | 10137 | if (s->size == 0) |
| 8423293d | 10138 | s->flags |= SEC_EXCLUDE; |
| e717da7e AM |
10139 | else |
| 10140 | { | |
| eea6121a | 10141 | s->contents = bfd_zalloc (ibfd, s->size); |
| e717da7e AM |
10142 | if (s->contents == NULL) |
| 10143 | return FALSE; | |
| 10144 | relocs = TRUE; | |
| 10145 | s->reloc_count = 0; | |
| 10146 | } | |
| 10147 | } | |
| 10148 | } | |
| 10149 | ||
| e86ce104 | 10150 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 10151 | { |
| e8910a83 AM |
10152 | bfd_boolean tls_opt; |
| 10153 | ||
| 5bd4f169 AM |
10154 | /* Add some entries to the .dynamic section. We fill in the |
| 10155 | values later, in ppc64_elf_finish_dynamic_sections, but we | |
| 10156 | must add the entries now so that we get the correct size for | |
| 10157 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
| 10158 | dynamic linker and used by the debugger. */ | |
| dc810e39 | 10159 | #define add_dynamic_entry(TAG, VAL) \ |
| 5a580b3a | 10160 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| dc810e39 | 10161 | |
| 0e1862bb | 10162 | if (bfd_link_executable (info)) |
| 5bd4f169 | 10163 | { |
| dc810e39 | 10164 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| b34976b6 | 10165 | return FALSE; |
| 5bd4f169 AM |
10166 | } |
| 10167 | ||
| 33e44f2e | 10168 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
| 5bd4f169 | 10169 | { |
| dc810e39 AM |
10170 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 10171 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
| 10172 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
| 5d1634d7 AM |
10173 | || !add_dynamic_entry (DT_JMPREL, 0) |
| 10174 | || !add_dynamic_entry (DT_PPC64_GLINK, 0)) | |
| b34976b6 | 10175 | return FALSE; |
| 5bd4f169 AM |
10176 | } |
| 10177 | ||
| ee67d69a | 10178 | if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1) |
| 19397422 AM |
10179 | { |
| 10180 | if (!add_dynamic_entry (DT_PPC64_OPD, 0) | |
| 10181 | || !add_dynamic_entry (DT_PPC64_OPDSZ, 0)) | |
| b34976b6 | 10182 | return FALSE; |
| 19397422 AM |
10183 | } |
| 10184 | ||
| 7c9cf415 | 10185 | tls_opt = (htab->params->tls_get_addr_opt |
| e8910a83 AM |
10186 | && htab->tls_get_addr_fd != NULL |
| 10187 | && htab->tls_get_addr_fd->elf.plt.plist != NULL); | |
| 10188 | if (tls_opt || !htab->opd_abi) | |
| 10189 | { | |
| 10190 | if (!add_dynamic_entry (DT_PPC64_OPT, tls_opt ? PPC64_OPT_TLS : 0)) | |
| 10191 | return FALSE; | |
| 10192 | } | |
| a7f2871e | 10193 | |
| 5bd4f169 AM |
10194 | if (relocs) |
| 10195 | { | |
| dc810e39 AM |
10196 | if (!add_dynamic_entry (DT_RELA, 0) |
| 10197 | || !add_dynamic_entry (DT_RELASZ, 0) | |
| 10198 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela))) | |
| b34976b6 | 10199 | return FALSE; |
| 5bd4f169 | 10200 | |
| 65f38f15 AM |
10201 | /* If any dynamic relocs apply to a read-only section, |
| 10202 | then we need a DT_TEXTREL entry. */ | |
| 248866a8 | 10203 | if ((info->flags & DF_TEXTREL) == 0) |
| a345bc8d | 10204 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); |
| 5bd4f169 | 10205 | |
| 65f38f15 | 10206 | if ((info->flags & DF_TEXTREL) != 0) |
| 5bd4f169 | 10207 | { |
| 65f38f15 | 10208 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| b34976b6 | 10209 | return FALSE; |
| 5bd4f169 | 10210 | } |
| 5bd4f169 | 10211 | } |
| 5bd4f169 | 10212 | } |
| 65f38f15 | 10213 | #undef add_dynamic_entry |
| 5bd4f169 | 10214 | |
| b34976b6 | 10215 | return TRUE; |
| 5bd4f169 AM |
10216 | } |
| 10217 | ||
| a345bc8d AM |
10218 | /* Return TRUE if symbol should be hashed in the `.gnu.hash' section. */ |
| 10219 | ||
| 10220 | static bfd_boolean | |
| 10221 | ppc64_elf_hash_symbol (struct elf_link_hash_entry *h) | |
| 10222 | { | |
| 10223 | if (h->plt.plist != NULL | |
| 10224 | && !h->def_regular | |
| 10225 | && !h->pointer_equality_needed) | |
| 10226 | return FALSE; | |
| 10227 | ||
| 10228 | return _bfd_elf_hash_symbol (h); | |
| 10229 | } | |
| 10230 | ||
| 721956f4 | 10231 | /* Determine the type of stub needed, if any, for a call. */ |
| 5bd4f169 | 10232 | |
| 4ce794b7 AM |
10233 | static inline enum ppc_stub_type |
| 10234 | ppc_type_of_stub (asection *input_sec, | |
| 10235 | const Elf_Internal_Rela *rel, | |
| 10236 | struct ppc_link_hash_entry **hash, | |
| e054468f | 10237 | struct plt_entry **plt_ent, |
| 6911b7dc AM |
10238 | bfd_vma destination, |
| 10239 | unsigned long local_off) | |
| 5bd4f169 | 10240 | { |
| 721956f4 AM |
10241 | struct ppc_link_hash_entry *h = *hash; |
| 10242 | bfd_vma location; | |
| 10243 | bfd_vma branch_offset; | |
| 10244 | bfd_vma max_branch_offset; | |
| 4ce794b7 | 10245 | enum elf_ppc64_reloc_type r_type; |
| 5bd4f169 | 10246 | |
| 721956f4 AM |
10247 | if (h != NULL) |
| 10248 | { | |
| e054468f | 10249 | struct plt_entry *ent; |
| 7fe2b9a6 | 10250 | struct ppc_link_hash_entry *fdh = h; |
| b31867b6 AM |
10251 | if (h->oh != NULL |
| 10252 | && h->oh->is_func_descriptor) | |
| 7b8f6675 AM |
10253 | { |
| 10254 | fdh = ppc_follow_link (h->oh); | |
| 10255 | *hash = fdh; | |
| 10256 | } | |
| 8387904d | 10257 | |
| e054468f AM |
10258 | for (ent = fdh->elf.plt.plist; ent != NULL; ent = ent->next) |
| 10259 | if (ent->addend == rel->r_addend | |
| 10260 | && ent->plt.offset != (bfd_vma) -1) | |
| 10261 | { | |
| e054468f AM |
10262 | *plt_ent = ent; |
| 10263 | return ppc_stub_plt_call; | |
| 10264 | } | |
| 5bd4f169 | 10265 | |
| 7fe2b9a6 AM |
10266 | /* Here, we know we don't have a plt entry. If we don't have a |
| 10267 | either a defined function descriptor or a defined entry symbol | |
| 10268 | in a regular object file, then it is pointless trying to make | |
| 10269 | any other type of stub. */ | |
| 854b41e7 AM |
10270 | if (!is_static_defined (&fdh->elf) |
| 10271 | && !is_static_defined (&h->elf)) | |
| 721956f4 | 10272 | return ppc_stub_none; |
| 5d1634d7 | 10273 | } |
| e054468f AM |
10274 | else if (elf_local_got_ents (input_sec->owner) != NULL) |
| 10275 | { | |
| 10276 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_sec->owner); | |
| 10277 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 10278 | elf_local_got_ents (input_sec->owner) + symtab_hdr->sh_info; | |
| 10279 | unsigned long r_symndx = ELF64_R_SYM (rel->r_info); | |
| 10280 | ||
| 10281 | if (local_plt[r_symndx] != NULL) | |
| 10282 | { | |
| 10283 | struct plt_entry *ent; | |
| 10284 | ||
| 10285 | for (ent = local_plt[r_symndx]; ent != NULL; ent = ent->next) | |
| 10286 | if (ent->addend == rel->r_addend | |
| 10287 | && ent->plt.offset != (bfd_vma) -1) | |
| 10288 | { | |
| 10289 | *plt_ent = ent; | |
| 10290 | return ppc_stub_plt_call; | |
| 10291 | } | |
| 10292 | } | |
| 10293 | } | |
| 5d1634d7 | 10294 | |
| 721956f4 AM |
10295 | /* Determine where the call point is. */ |
| 10296 | location = (input_sec->output_offset | |
| 10297 | + input_sec->output_section->vma | |
| 10298 | + rel->r_offset); | |
| 5d1634d7 | 10299 | |
| 721956f4 AM |
10300 | branch_offset = destination - location; |
| 10301 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 5d1634d7 | 10302 | |
| 721956f4 AM |
10303 | /* Determine if a long branch stub is needed. */ |
| 10304 | max_branch_offset = 1 << 25; | |
| 4ce794b7 | 10305 | if (r_type != R_PPC64_REL24) |
| 721956f4 | 10306 | max_branch_offset = 1 << 15; |
| 5d1634d7 | 10307 | |
| 6911b7dc | 10308 | if (branch_offset + max_branch_offset >= 2 * max_branch_offset - local_off) |
| 721956f4 AM |
10309 | /* We need a stub. Figure out whether a long_branch or plt_branch |
| 10310 | is needed later. */ | |
| 10311 | return ppc_stub_long_branch; | |
| 5d1634d7 | 10312 | |
| 721956f4 | 10313 | return ppc_stub_none; |
| 5d1634d7 AM |
10314 | } |
| 10315 | ||
| 794e51c0 AM |
10316 | /* With power7 weakly ordered memory model, it is possible for ld.so |
| 10317 | to update a plt entry in one thread and have another thread see a | |
| 10318 | stale zero toc entry. To avoid this we need some sort of acquire | |
| 10319 | barrier in the call stub. One solution is to make the load of the | |
| 10320 | toc word seem to appear to depend on the load of the function entry | |
| 10321 | word. Another solution is to test for r2 being zero, and branch to | |
| 10322 | the appropriate glink entry if so. | |
| 10323 | ||
| 10324 | . fake dep barrier compare | |
| 71a39c98 AM |
10325 | . ld 12,xxx(2) ld 12,xxx(2) |
| 10326 | . mtctr 12 mtctr 12 | |
| 10327 | . xor 11,12,12 ld 2,xxx+8(2) | |
| 794e51c0 AM |
10328 | . add 2,2,11 cmpldi 2,0 |
| 10329 | . ld 2,xxx+8(2) bnectr+ | |
| 10330 | . bctr b <glink_entry> | |
| 10331 | ||
| 10332 | The solution involving the compare turns out to be faster, so | |
| 10333 | that's what we use unless the branch won't reach. */ | |
| 10334 | ||
| 10335 | #define ALWAYS_USE_FAKE_DEP 0 | |
| 10336 | #define ALWAYS_EMIT_R2SAVE 0 | |
| 5d1634d7 | 10337 | |
| 5d1634d7 AM |
10338 | #define PPC_LO(v) ((v) & 0xffff) |
| 10339 | #define PPC_HI(v) (((v) >> 16) & 0xffff) | |
| 10340 | #define PPC_HA(v) PPC_HI ((v) + 0x8000) | |
| 10341 | ||
| 794e51c0 AM |
10342 | static inline unsigned int |
| 10343 | plt_stub_size (struct ppc_link_hash_table *htab, | |
| 10344 | struct ppc_stub_hash_entry *stub_entry, | |
| 10345 | bfd_vma off) | |
| 10346 | { | |
| b9e5796b AM |
10347 | unsigned size = 12; |
| 10348 | ||
| 10349 | if (ALWAYS_EMIT_R2SAVE | |
| 10350 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10351 | size += 4; | |
| 10352 | if (PPC_HA (off) != 0) | |
| 794e51c0 | 10353 | size += 4; |
| b9e5796b AM |
10354 | if (htab->opd_abi) |
| 10355 | { | |
| 10356 | size += 4; | |
| e7d1c40c | 10357 | if (htab->params->plt_static_chain) |
| b9e5796b | 10358 | size += 4; |
| bd4d2eaa AM |
10359 | if (htab->params->plt_thread_safe |
| 10360 | && htab->elf.dynamic_sections_created | |
| 10361 | && stub_entry->h != NULL | |
| 10362 | && stub_entry->h->elf.dynindx != -1) | |
| b9e5796b | 10363 | size += 8; |
| e7d1c40c | 10364 | if (PPC_HA (off + 8 + 8 * htab->params->plt_static_chain) != PPC_HA (off)) |
| b9e5796b AM |
10365 | size += 4; |
| 10366 | } | |
| 794e51c0 AM |
10367 | if (stub_entry->h != NULL |
| 10368 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 10369 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 10370 | && htab->params->tls_get_addr_opt) |
| 794e51c0 AM |
10371 | size += 13 * 4; |
| 10372 | return size; | |
| 10373 | } | |
| 10374 | ||
| 10375 | /* If this stub would cross fewer 2**plt_stub_align boundaries if we align, | |
| 10376 | then return the padding needed to do so. */ | |
| 10377 | static inline unsigned int | |
| 10378 | plt_stub_pad (struct ppc_link_hash_table *htab, | |
| 10379 | struct ppc_stub_hash_entry *stub_entry, | |
| 10380 | bfd_vma plt_off) | |
| 10381 | { | |
| e7d1c40c | 10382 | int stub_align = 1 << htab->params->plt_stub_align; |
| 794e51c0 | 10383 | unsigned stub_size = plt_stub_size (htab, stub_entry, plt_off); |
| 6f20ed8a | 10384 | bfd_vma stub_off = stub_entry->group->stub_sec->size; |
| 794e51c0 AM |
10385 | |
| 10386 | if (((stub_off + stub_size - 1) & -stub_align) - (stub_off & -stub_align) | |
| e05fa0ba | 10387 | > ((stub_size - 1) & -stub_align)) |
| 794e51c0 AM |
10388 | return stub_align - (stub_off & (stub_align - 1)); |
| 10389 | return 0; | |
| 10390 | } | |
| 10391 | ||
| 10392 | /* Build a .plt call stub. */ | |
| 10393 | ||
| 10394 | static inline bfd_byte * | |
| 10395 | build_plt_stub (struct ppc_link_hash_table *htab, | |
| 10396 | struct ppc_stub_hash_entry *stub_entry, | |
| 10397 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| 10398 | { | |
| e7d1c40c | 10399 | bfd *obfd = htab->params->stub_bfd; |
| b9e5796b | 10400 | bfd_boolean plt_load_toc = htab->opd_abi; |
| e7d1c40c | 10401 | bfd_boolean plt_static_chain = htab->params->plt_static_chain; |
| bd4d2eaa AM |
10402 | bfd_boolean plt_thread_safe = (htab->params->plt_thread_safe |
| 10403 | && htab->elf.dynamic_sections_created | |
| 10404 | && stub_entry->h != NULL | |
| 10405 | && stub_entry->h->elf.dynindx != -1); | |
| 794e51c0 AM |
10406 | bfd_boolean use_fake_dep = plt_thread_safe; |
| 10407 | bfd_vma cmp_branch_off = 0; | |
| 10408 | ||
| 10409 | if (!ALWAYS_USE_FAKE_DEP | |
| b9e5796b | 10410 | && plt_load_toc |
| 794e51c0 | 10411 | && plt_thread_safe |
| bd4d2eaa AM |
10412 | && !((stub_entry->h == htab->tls_get_addr_fd |
| 10413 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 10414 | && htab->params->tls_get_addr_opt)) |
| 794e51c0 AM |
10415 | { |
| 10416 | bfd_vma pltoff = stub_entry->plt_ent->plt.offset & ~1; | |
| b9e5796b AM |
10417 | bfd_vma pltindex = ((pltoff - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 10418 | / PLT_ENTRY_SIZE (htab)); | |
| 794e51c0 AM |
10419 | bfd_vma glinkoff = GLINK_CALL_STUB_SIZE + pltindex * 8; |
| 10420 | bfd_vma to, from; | |
| 10421 | ||
| 68d62958 AM |
10422 | if (pltindex > 32768) |
| 10423 | glinkoff += (pltindex - 32768) * 4; | |
| 794e51c0 AM |
10424 | to = (glinkoff |
| 10425 | + htab->glink->output_offset | |
| 10426 | + htab->glink->output_section->vma); | |
| 6f20ed8a | 10427 | from = (p - stub_entry->group->stub_sec->contents |
| 794e51c0 AM |
10428 | + 4 * (ALWAYS_EMIT_R2SAVE |
| 10429 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10430 | + 4 * (PPC_HA (offset) != 0) | |
| 10431 | + 4 * (PPC_HA (offset + 8 + 8 * plt_static_chain) | |
| 10432 | != PPC_HA (offset)) | |
| 10433 | + 4 * (plt_static_chain != 0) | |
| 10434 | + 20 | |
| 6f20ed8a AM |
10435 | + stub_entry->group->stub_sec->output_offset |
| 10436 | + stub_entry->group->stub_sec->output_section->vma); | |
| 794e51c0 AM |
10437 | cmp_branch_off = to - from; |
| 10438 | use_fake_dep = cmp_branch_off + (1 << 25) >= (1 << 26); | |
| 10439 | } | |
| 10440 | ||
| ac2df442 AM |
10441 | if (PPC_HA (offset) != 0) |
| 10442 | { | |
| 176a0d42 AM |
10443 | if (r != NULL) |
| 10444 | { | |
| 794e51c0 AM |
10445 | if (ALWAYS_EMIT_R2SAVE |
| 10446 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10447 | r[0].r_offset += 4; | |
| 176a0d42 | 10448 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); |
| 3b421ab3 | 10449 | r[1].r_offset = r[0].r_offset + 4; |
| 176a0d42 AM |
10450 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); |
| 10451 | r[1].r_addend = r[0].r_addend; | |
| b9e5796b | 10452 | if (plt_load_toc) |
| 176a0d42 | 10453 | { |
| b9e5796b | 10454 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10455 | { |
| b9e5796b AM |
10456 | r[2].r_offset = r[1].r_offset + 4; |
| 10457 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO); | |
| 10458 | r[2].r_addend = r[0].r_addend; | |
| 10459 | } | |
| 10460 | else | |
| 10461 | { | |
| 10462 | r[2].r_offset = r[1].r_offset + 8 + 8 * use_fake_dep; | |
| 10463 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10464 | r[2].r_addend = r[0].r_addend + 8; | |
| 10465 | if (plt_static_chain) | |
| 10466 | { | |
| 10467 | r[3].r_offset = r[2].r_offset + 4; | |
| 10468 | r[3].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10469 | r[3].r_addend = r[0].r_addend + 16; | |
| 10470 | } | |
| c7131b65 | 10471 | } |
| 176a0d42 AM |
10472 | } |
| 10473 | } | |
| 794e51c0 AM |
10474 | if (ALWAYS_EMIT_R2SAVE |
| 10475 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10476 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 397998fc AM |
10477 | if (plt_load_toc) |
| 10478 | { | |
| 10479 | bfd_put_32 (obfd, ADDIS_R11_R2 | PPC_HA (offset), p), p += 4; | |
| 10480 | bfd_put_32 (obfd, LD_R12_0R11 | PPC_LO (offset), p), p += 4; | |
| 10481 | } | |
| 10482 | else | |
| 10483 | { | |
| 10484 | bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4; | |
| 10485 | bfd_put_32 (obfd, LD_R12_0R12 | PPC_LO (offset), p), p += 4; | |
| 10486 | } | |
| b9e5796b AM |
10487 | if (plt_load_toc |
| 10488 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 | 10489 | { |
| 71a39c98 | 10490 | bfd_put_32 (obfd, ADDI_R11_R11 | PPC_LO (offset), p), p += 4; |
| ac2df442 AM |
10491 | offset = 0; |
| 10492 | } | |
| 71a39c98 | 10493 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10494 | if (plt_load_toc) |
| 794e51c0 | 10495 | { |
| b9e5796b AM |
10496 | if (use_fake_dep) |
| 10497 | { | |
| 10498 | bfd_put_32 (obfd, XOR_R2_R12_R12, p), p += 4; | |
| 10499 | bfd_put_32 (obfd, ADD_R11_R11_R2, p), p += 4; | |
| 10500 | } | |
| 10501 | bfd_put_32 (obfd, LD_R2_0R11 | PPC_LO (offset + 8), p), p += 4; | |
| 10502 | if (plt_static_chain) | |
| 10503 | bfd_put_32 (obfd, LD_R11_0R11 | PPC_LO (offset + 16), p), p += 4; | |
| 794e51c0 | 10504 | } |
| ac2df442 AM |
10505 | } |
| 10506 | else | |
| 10507 | { | |
| 176a0d42 AM |
10508 | if (r != NULL) |
| 10509 | { | |
| 794e51c0 AM |
10510 | if (ALWAYS_EMIT_R2SAVE |
| 10511 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 10512 | r[0].r_offset += 4; | |
| 176a0d42 | 10513 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); |
| b9e5796b | 10514 | if (plt_load_toc) |
| 176a0d42 | 10515 | { |
| b9e5796b | 10516 | if (PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) |
| c7131b65 | 10517 | { |
| b9e5796b AM |
10518 | r[1].r_offset = r[0].r_offset + 4; |
| 10519 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16); | |
| 10520 | r[1].r_addend = r[0].r_addend; | |
| 10521 | } | |
| 10522 | else | |
| 10523 | { | |
| 10524 | r[1].r_offset = r[0].r_offset + 8 + 8 * use_fake_dep; | |
| 10525 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10526 | r[1].r_addend = r[0].r_addend + 8 + 8 * plt_static_chain; | |
| 10527 | if (plt_static_chain) | |
| 10528 | { | |
| 10529 | r[2].r_offset = r[1].r_offset + 4; | |
| 10530 | r[2].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10531 | r[2].r_addend = r[0].r_addend + 8; | |
| 10532 | } | |
| c7131b65 | 10533 | } |
| 176a0d42 AM |
10534 | } |
| 10535 | } | |
| 794e51c0 AM |
10536 | if (ALWAYS_EMIT_R2SAVE |
| 10537 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| a078d95a | 10538 | bfd_put_32 (obfd, STD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| 71a39c98 | 10539 | bfd_put_32 (obfd, LD_R12_0R2 | PPC_LO (offset), p), p += 4; |
| b9e5796b AM |
10540 | if (plt_load_toc |
| 10541 | && PPC_HA (offset + 8 + 8 * plt_static_chain) != PPC_HA (offset)) | |
| ac2df442 AM |
10542 | { |
| 10543 | bfd_put_32 (obfd, ADDI_R2_R2 | PPC_LO (offset), p), p += 4; | |
| 10544 | offset = 0; | |
| 10545 | } | |
| 71a39c98 | 10546 | bfd_put_32 (obfd, MTCTR_R12, p), p += 4; |
| b9e5796b | 10547 | if (plt_load_toc) |
| 794e51c0 | 10548 | { |
| b9e5796b AM |
10549 | if (use_fake_dep) |
| 10550 | { | |
| 10551 | bfd_put_32 (obfd, XOR_R11_R12_R12, p), p += 4; | |
| 10552 | bfd_put_32 (obfd, ADD_R2_R2_R11, p), p += 4; | |
| 10553 | } | |
| 10554 | if (plt_static_chain) | |
| 10555 | bfd_put_32 (obfd, LD_R11_0R2 | PPC_LO (offset + 16), p), p += 4; | |
| 10556 | bfd_put_32 (obfd, LD_R2_0R2 | PPC_LO (offset + 8), p), p += 4; | |
| 794e51c0 | 10557 | } |
| ac2df442 | 10558 | } |
| b9e5796b | 10559 | if (plt_load_toc && plt_thread_safe && !use_fake_dep) |
| 794e51c0 AM |
10560 | { |
| 10561 | bfd_put_32 (obfd, CMPLDI_R2_0, p), p += 4; | |
| 10562 | bfd_put_32 (obfd, BNECTR_P4, p), p += 4; | |
| 22aa0c7e | 10563 | bfd_put_32 (obfd, B_DOT | (cmp_branch_off & 0x3fffffc), p), p += 4; |
| 794e51c0 AM |
10564 | } |
| 10565 | else | |
| 10566 | bfd_put_32 (obfd, BCTR, p), p += 4; | |
| 5d1634d7 AM |
10567 | return p; |
| 10568 | } | |
| 10569 | ||
| a7f2871e AM |
10570 | /* Build a special .plt call stub for __tls_get_addr. */ |
| 10571 | ||
| 10572 | #define LD_R11_0R3 0xe9630000 | |
| 10573 | #define LD_R12_0R3 0xe9830000 | |
| 10574 | #define MR_R0_R3 0x7c601b78 | |
| 10575 | #define CMPDI_R11_0 0x2c2b0000 | |
| 10576 | #define ADD_R3_R12_R13 0x7c6c6a14 | |
| 10577 | #define BEQLR 0x4d820020 | |
| 10578 | #define MR_R3_R0 0x7c030378 | |
| a7f2871e AM |
10579 | #define STD_R11_0R1 0xf9610000 |
| 10580 | #define BCTRL 0x4e800421 | |
| 10581 | #define LD_R11_0R1 0xe9610000 | |
| a7f2871e AM |
10582 | #define MTLR_R11 0x7d6803a6 |
| 10583 | ||
| 10584 | static inline bfd_byte * | |
| 794e51c0 AM |
10585 | build_tls_get_addr_stub (struct ppc_link_hash_table *htab, |
| 10586 | struct ppc_stub_hash_entry *stub_entry, | |
| 10587 | bfd_byte *p, bfd_vma offset, Elf_Internal_Rela *r) | |
| a7f2871e | 10588 | { |
| e7d1c40c | 10589 | bfd *obfd = htab->params->stub_bfd; |
| 794e51c0 | 10590 | |
| a7f2871e AM |
10591 | bfd_put_32 (obfd, LD_R11_0R3 + 0, p), p += 4; |
| 10592 | bfd_put_32 (obfd, LD_R12_0R3 + 8, p), p += 4; | |
| 10593 | bfd_put_32 (obfd, MR_R0_R3, p), p += 4; | |
| 10594 | bfd_put_32 (obfd, CMPDI_R11_0, p), p += 4; | |
| 10595 | bfd_put_32 (obfd, ADD_R3_R12_R13, p), p += 4; | |
| 10596 | bfd_put_32 (obfd, BEQLR, p), p += 4; | |
| 10597 | bfd_put_32 (obfd, MR_R3_R0, p), p += 4; | |
| 10598 | bfd_put_32 (obfd, MFLR_R11, p), p += 4; | |
| a078d95a | 10599 | bfd_put_32 (obfd, STD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| a7f2871e AM |
10600 | |
| 10601 | if (r != NULL) | |
| 10602 | r[0].r_offset += 9 * 4; | |
| 794e51c0 | 10603 | p = build_plt_stub (htab, stub_entry, p, offset, r); |
| a7f2871e AM |
10604 | bfd_put_32 (obfd, BCTRL, p - 4); |
| 10605 | ||
| a078d95a | 10606 | bfd_put_32 (obfd, LD_R2_0R1 + STK_TOC (htab), p), p += 4; |
| bd4d2eaa | 10607 | bfd_put_32 (obfd, LD_R11_0R1 + STK_LINKER (htab), p), p += 4; |
| a7f2871e AM |
10608 | bfd_put_32 (obfd, MTLR_R11, p), p += 4; |
| 10609 | bfd_put_32 (obfd, BLR, p), p += 4; | |
| 10610 | ||
| 10611 | return p; | |
| 10612 | } | |
| 10613 | ||
| 176a0d42 AM |
10614 | static Elf_Internal_Rela * |
| 10615 | get_relocs (asection *sec, int count) | |
| 10616 | { | |
| 10617 | Elf_Internal_Rela *relocs; | |
| 10618 | struct bfd_elf_section_data *elfsec_data; | |
| 10619 | ||
| 10620 | elfsec_data = elf_section_data (sec); | |
| 10621 | relocs = elfsec_data->relocs; | |
| 10622 | if (relocs == NULL) | |
| 10623 | { | |
| 10624 | bfd_size_type relsize; | |
| 10625 | relsize = sec->reloc_count * sizeof (*relocs); | |
| 10626 | relocs = bfd_alloc (sec->owner, relsize); | |
| 10627 | if (relocs == NULL) | |
| 10628 | return NULL; | |
| 10629 | elfsec_data->relocs = relocs; | |
| d4730f92 BS |
10630 | elfsec_data->rela.hdr = bfd_zalloc (sec->owner, |
| 10631 | sizeof (Elf_Internal_Shdr)); | |
| 10632 | if (elfsec_data->rela.hdr == NULL) | |
| 10633 | return NULL; | |
| 10634 | elfsec_data->rela.hdr->sh_size = (sec->reloc_count | |
| 10635 | * sizeof (Elf64_External_Rela)); | |
| 10636 | elfsec_data->rela.hdr->sh_entsize = sizeof (Elf64_External_Rela); | |
| 176a0d42 AM |
10637 | sec->reloc_count = 0; |
| 10638 | } | |
| 10639 | relocs += sec->reloc_count; | |
| 10640 | sec->reloc_count += count; | |
| 10641 | return relocs; | |
| 10642 | } | |
| 10643 | ||
| aa374f67 | 10644 | static bfd_vma |
| 25f53a85 | 10645 | get_r2off (struct bfd_link_info *info, |
| aa374f67 AM |
10646 | struct ppc_stub_hash_entry *stub_entry) |
| 10647 | { | |
| 25f53a85 | 10648 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 6f20ed8a | 10649 | bfd_vma r2off = htab->sec_info[stub_entry->target_section->id].toc_off; |
| aa374f67 AM |
10650 | |
| 10651 | if (r2off == 0) | |
| 10652 | { | |
| 10653 | /* Support linking -R objects. Get the toc pointer from the | |
| 10654 | opd entry. */ | |
| 10655 | char buf[8]; | |
| b9e5796b AM |
10656 | if (!htab->opd_abi) |
| 10657 | return r2off; | |
| aa374f67 AM |
10658 | asection *opd = stub_entry->h->elf.root.u.def.section; |
| 10659 | bfd_vma opd_off = stub_entry->h->elf.root.u.def.value; | |
| 10660 | ||
| 10661 | if (strcmp (opd->name, ".opd") != 0 | |
| 10662 | || opd->reloc_count != 0) | |
| 10663 | { | |
| bc30df16 | 10664 | info->callbacks->einfo (_("%P: cannot find opd entry toc for `%T'\n"), |
| 25f53a85 | 10665 | stub_entry->h->elf.root.root.string); |
| aa374f67 | 10666 | bfd_set_error (bfd_error_bad_value); |
| a7c49797 | 10667 | return (bfd_vma) -1; |
| aa374f67 AM |
10668 | } |
| 10669 | if (!bfd_get_section_contents (opd->owner, opd, buf, opd_off + 8, 8)) | |
| a7c49797 | 10670 | return (bfd_vma) -1; |
| aa374f67 | 10671 | r2off = bfd_get_64 (opd->owner, buf); |
| 25f53a85 | 10672 | r2off -= elf_gp (info->output_bfd); |
| aa374f67 | 10673 | } |
| 6f20ed8a | 10674 | r2off -= htab->sec_info[stub_entry->group->link_sec->id].toc_off; |
| aa374f67 AM |
10675 | return r2off; |
| 10676 | } | |
| 10677 | ||
| b34976b6 | 10678 | static bfd_boolean |
| 4ce794b7 | 10679 | ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 5d1634d7 | 10680 | { |
| 721956f4 AM |
10681 | struct ppc_stub_hash_entry *stub_entry; |
| 10682 | struct ppc_branch_hash_entry *br_entry; | |
| 5d1634d7 AM |
10683 | struct bfd_link_info *info; |
| 10684 | struct ppc_link_hash_table *htab; | |
| 721956f4 AM |
10685 | bfd_byte *loc; |
| 10686 | bfd_byte *p; | |
| ee75fd95 | 10687 | bfd_vma dest, off; |
| 721956f4 | 10688 | int size; |
| 176a0d42 | 10689 | Elf_Internal_Rela *r; |
| e054468f | 10690 | asection *plt; |
| 5d1634d7 | 10691 | |
| 721956f4 AM |
10692 | /* Massage our args to the form they really have. */ |
| 10693 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 4ce794b7 | 10694 | info = in_arg; |
| 5d1634d7 | 10695 | |
| 5d1634d7 | 10696 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
10697 | if (htab == NULL) |
| 10698 | return FALSE; | |
| 5d1634d7 | 10699 | |
| 721956f4 | 10700 | /* Make a note of the offset within the stubs for this entry. */ |
| 6f20ed8a AM |
10701 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; |
| 10702 | loc = stub_entry->group->stub_sec->contents + stub_entry->stub_offset; | |
| 721956f4 | 10703 | |
| 4ce794b7 | 10704 | htab->stub_count[stub_entry->stub_type - 1] += 1; |
| 721956f4 | 10705 | switch (stub_entry->stub_type) |
| 5d1634d7 | 10706 | { |
| 721956f4 | 10707 | case ppc_stub_long_branch: |
| ad8e1ba5 | 10708 | case ppc_stub_long_branch_r2off: |
| 721956f4 | 10709 | /* Branches are relative. This is where we are going to. */ |
| 6911b7dc AM |
10710 | dest = (stub_entry->target_value |
| 10711 | + stub_entry->target_section->output_offset | |
| 10712 | + stub_entry->target_section->output_section->vma); | |
| 10713 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 10714 | off = dest; | |
| 5d1634d7 | 10715 | |
| 721956f4 AM |
10716 | /* And this is where we are coming from. */ |
| 10717 | off -= (stub_entry->stub_offset | |
| 6f20ed8a AM |
10718 | + stub_entry->group->stub_sec->output_offset |
| 10719 | + stub_entry->group->stub_sec->output_section->vma); | |
| e86ce104 | 10720 | |
| ac2df442 AM |
10721 | size = 4; |
| 10722 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| ad8e1ba5 | 10723 | { |
| 25f53a85 | 10724 | bfd_vma r2off = get_r2off (info, stub_entry); |
| ad8e1ba5 | 10725 | |
| a7c49797 | 10726 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
10727 | { |
| 10728 | htab->stub_error = TRUE; | |
| 10729 | return FALSE; | |
| 10730 | } | |
| e7d1c40c | 10731 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 10732 | loc += 4; |
| a7c49797 | 10733 | size = 8; |
| ac2df442 AM |
10734 | if (PPC_HA (r2off) != 0) |
| 10735 | { | |
| e7d1c40c AM |
10736 | bfd_put_32 (htab->params->stub_bfd, |
| 10737 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| ac2df442 | 10738 | loc += 4; |
| a7c49797 AM |
10739 | size += 4; |
| 10740 | } | |
| 10741 | if (PPC_LO (r2off) != 0) | |
| 10742 | { | |
| 10743 | bfd_put_32 (htab->params->stub_bfd, | |
| 10744 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
| 10745 | loc += 4; | |
| 10746 | size += 4; | |
| ac2df442 | 10747 | } |
| ac2df442 | 10748 | off -= size - 4; |
| ad8e1ba5 | 10749 | } |
| e7d1c40c | 10750 | bfd_put_32 (htab->params->stub_bfd, B_DOT | (off & 0x3fffffc), loc); |
| ad8e1ba5 | 10751 | |
| 5c3dead3 AM |
10752 | if (off + (1 << 25) >= (bfd_vma) (1 << 26)) |
| 10753 | { | |
| bc30df16 AM |
10754 | info->callbacks->einfo |
| 10755 | (_("%P: long branch stub `%s' offset overflow\n"), | |
| 10756 | stub_entry->root.string); | |
| 5c3dead3 AM |
10757 | htab->stub_error = TRUE; |
| 10758 | return FALSE; | |
| 10759 | } | |
| ee75fd95 AM |
10760 | |
| 10761 | if (info->emitrelocations) | |
| 10762 | { | |
| 6f20ed8a | 10763 | r = get_relocs (stub_entry->group->stub_sec, 1); |
| 176a0d42 AM |
10764 | if (r == NULL) |
| 10765 | return FALSE; | |
| 6f20ed8a | 10766 | r->r_offset = loc - stub_entry->group->stub_sec->contents; |
| ee75fd95 AM |
10767 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL24); |
| 10768 | r->r_addend = dest; | |
| 10769 | if (stub_entry->h != NULL) | |
| 10770 | { | |
| 10771 | struct elf_link_hash_entry **hashes; | |
| 10772 | unsigned long symndx; | |
| 10773 | struct ppc_link_hash_entry *h; | |
| 10774 | ||
| e7d1c40c | 10775 | hashes = elf_sym_hashes (htab->params->stub_bfd); |
| ee75fd95 AM |
10776 | if (hashes == NULL) |
| 10777 | { | |
| 10778 | bfd_size_type hsize; | |
| 10779 | ||
| 10780 | hsize = (htab->stub_globals + 1) * sizeof (*hashes); | |
| e7d1c40c | 10781 | hashes = bfd_zalloc (htab->params->stub_bfd, hsize); |
| ee75fd95 AM |
10782 | if (hashes == NULL) |
| 10783 | return FALSE; | |
| e7d1c40c | 10784 | elf_sym_hashes (htab->params->stub_bfd) = hashes; |
| ee75fd95 AM |
10785 | htab->stub_globals = 1; |
| 10786 | } | |
| 10787 | symndx = htab->stub_globals++; | |
| 10788 | h = stub_entry->h; | |
| 10789 | hashes[symndx] = &h->elf; | |
| 10790 | r->r_info = ELF64_R_INFO (symndx, R_PPC64_REL24); | |
| 10791 | if (h->oh != NULL && h->oh->is_func) | |
| b31867b6 | 10792 | h = ppc_follow_link (h->oh); |
| ee75fd95 AM |
10793 | if (h->elf.root.u.def.section != stub_entry->target_section) |
| 10794 | /* H is an opd symbol. The addend must be zero. */ | |
| 10795 | r->r_addend = 0; | |
| 10796 | else | |
| 10797 | { | |
| 10798 | off = (h->elf.root.u.def.value | |
| 10799 | + h->elf.root.u.def.section->output_offset | |
| 10800 | + h->elf.root.u.def.section->output_section->vma); | |
| 10801 | r->r_addend -= off; | |
| 10802 | } | |
| 10803 | } | |
| 10804 | } | |
| 721956f4 | 10805 | break; |
| e86ce104 | 10806 | |
| 721956f4 | 10807 | case ppc_stub_plt_branch: |
| ad8e1ba5 | 10808 | case ppc_stub_plt_branch_r2off: |
| 721956f4 AM |
10809 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, |
| 10810 | stub_entry->root.string + 9, | |
| b34976b6 | 10811 | FALSE, FALSE); |
| 721956f4 AM |
10812 | if (br_entry == NULL) |
| 10813 | { | |
| 8de848d8 | 10814 | info->callbacks->einfo (_("%P: can't find branch stub `%s'\n"), |
| 25f53a85 | 10815 | stub_entry->root.string); |
| b34976b6 AM |
10816 | htab->stub_error = TRUE; |
| 10817 | return FALSE; | |
| 721956f4 AM |
10818 | } |
| 10819 | ||
| 176a0d42 AM |
10820 | dest = (stub_entry->target_value |
| 10821 | + stub_entry->target_section->output_offset | |
| 10822 | + stub_entry->target_section->output_section->vma); | |
| 6911b7dc AM |
10823 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| 10824 | dest += PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); | |
| 721956f4 | 10825 | |
| 176a0d42 | 10826 | bfd_put_64 (htab->brlt->owner, dest, |
| 4ce794b7 | 10827 | htab->brlt->contents + br_entry->offset); |
| 721956f4 | 10828 | |
| f94498ff | 10829 | if (br_entry->iter == htab->stub_iteration) |
| 721956f4 | 10830 | { |
| f94498ff | 10831 | br_entry->iter = 0; |
| 84f5d08e | 10832 | |
| f94498ff | 10833 | if (htab->relbrlt != NULL) |
| 84f5d08e | 10834 | { |
| f94498ff AM |
10835 | /* Create a reloc for the branch lookup table entry. */ |
| 10836 | Elf_Internal_Rela rela; | |
| 10837 | bfd_byte *rl; | |
| 10838 | ||
| 10839 | rela.r_offset = (br_entry->offset | |
| 10840 | + htab->brlt->output_offset | |
| 10841 | + htab->brlt->output_section->vma); | |
| 10842 | rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10843 | rela.r_addend = dest; |
| f94498ff AM |
10844 | |
| 10845 | rl = htab->relbrlt->contents; | |
| 10846 | rl += (htab->relbrlt->reloc_count++ | |
| 10847 | * sizeof (Elf64_External_Rela)); | |
| 10848 | bfd_elf64_swap_reloca_out (htab->relbrlt->owner, &rela, rl); | |
| 10849 | } | |
| 10850 | else if (info->emitrelocations) | |
| 10851 | { | |
| 176a0d42 AM |
10852 | r = get_relocs (htab->brlt, 1); |
| 10853 | if (r == NULL) | |
| 10854 | return FALSE; | |
| 10855 | /* brlt, being SEC_LINKER_CREATED does not go through the | |
| 10856 | normal reloc processing. Symbols and offsets are not | |
| 10857 | translated from input file to output file form, so | |
| 10858 | set up the offset per the output file. */ | |
| f94498ff AM |
10859 | r->r_offset = (br_entry->offset |
| 10860 | + htab->brlt->output_offset | |
| 10861 | + htab->brlt->output_section->vma); | |
| 10862 | r->r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 176a0d42 | 10863 | r->r_addend = dest; |
| 84f5d08e | 10864 | } |
| 84f5d08e | 10865 | } |
| 721956f4 | 10866 | |
| 176a0d42 AM |
10867 | dest = (br_entry->offset |
| 10868 | + htab->brlt->output_offset | |
| 10869 | + htab->brlt->output_section->vma); | |
| 10870 | ||
| 10871 | off = (dest | |
| 4ce794b7 | 10872 | - elf_gp (htab->brlt->output_section->owner) |
| 6f20ed8a | 10873 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 10874 | |
| ad8e1ba5 | 10875 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 5d1634d7 | 10876 | { |
| 25f53a85 | 10877 | info->callbacks->einfo |
| bc30df16 | 10878 | (_("%P: linkage table error against `%T'\n"), |
| 721956f4 | 10879 | stub_entry->root.string); |
| 5d1634d7 | 10880 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
10881 | htab->stub_error = TRUE; |
| 10882 | return FALSE; | |
| 5d1634d7 | 10883 | } |
| 41bd81ab | 10884 | |
| 176a0d42 AM |
10885 | if (info->emitrelocations) |
| 10886 | { | |
| 6f20ed8a | 10887 | r = get_relocs (stub_entry->group->stub_sec, 1 + (PPC_HA (off) != 0)); |
| 176a0d42 AM |
10888 | if (r == NULL) |
| 10889 | return FALSE; | |
| 6f20ed8a | 10890 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
| 7cfbafbc AM |
10891 | if (bfd_big_endian (info->output_bfd)) |
| 10892 | r[0].r_offset += 2; | |
| 00f412ee | 10893 | if (stub_entry->stub_type == ppc_stub_plt_branch_r2off) |
| 176a0d42 AM |
10894 | r[0].r_offset += 4; |
| 10895 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_DS); | |
| 10896 | r[0].r_addend = dest; | |
| 10897 | if (PPC_HA (off) != 0) | |
| 10898 | { | |
| 10899 | r[0].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_HA); | |
| 10900 | r[1].r_offset = r[0].r_offset + 4; | |
| 10901 | r[1].r_info = ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS); | |
| 10902 | r[1].r_addend = r[0].r_addend; | |
| 10903 | } | |
| 10904 | } | |
| 10905 | ||
| 00f412ee | 10906 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ad8e1ba5 | 10907 | { |
| 176a0d42 | 10908 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10909 | { |
| 10910 | size = 16; | |
| e7d1c40c | 10911 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10912 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 10913 | loc += 4; |
| e7d1c40c | 10914 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10915 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
10916 | } |
| 10917 | else | |
| 10918 | { | |
| 10919 | size = 12; | |
| e7d1c40c AM |
10920 | bfd_put_32 (htab->params->stub_bfd, |
| 10921 | LD_R12_0R2 | PPC_LO (off), loc); | |
| ac2df442 | 10922 | } |
| ad8e1ba5 AM |
10923 | } |
| 10924 | else | |
| 10925 | { | |
| 25f53a85 | 10926 | bfd_vma r2off = get_r2off (info, stub_entry); |
| aa374f67 | 10927 | |
| a7c49797 | 10928 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
10929 | { |
| 10930 | htab->stub_error = TRUE; | |
| 10931 | return FALSE; | |
| 10932 | } | |
| ad8e1ba5 | 10933 | |
| e7d1c40c | 10934 | bfd_put_32 (htab->params->stub_bfd, STD_R2_0R1 + STK_TOC (htab), loc); |
| ad8e1ba5 | 10935 | loc += 4; |
| 00f412ee | 10936 | size = 16; |
| 176a0d42 | 10937 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
10938 | { |
| 10939 | size += 4; | |
| e7d1c40c | 10940 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10941 | ADDIS_R12_R2 | PPC_HA (off), loc); |
| ac2df442 | 10942 | loc += 4; |
| e7d1c40c | 10943 | bfd_put_32 (htab->params->stub_bfd, |
| 397998fc | 10944 | LD_R12_0R12 | PPC_LO (off), loc); |
| ac2df442 AM |
10945 | } |
| 10946 | else | |
| e7d1c40c | 10947 | bfd_put_32 (htab->params->stub_bfd, LD_R12_0R2 | PPC_LO (off), loc); |
| ac2df442 AM |
10948 | |
| 10949 | if (PPC_HA (r2off) != 0) | |
| 10950 | { | |
| 10951 | size += 4; | |
| 00f412ee | 10952 | loc += 4; |
| e7d1c40c AM |
10953 | bfd_put_32 (htab->params->stub_bfd, |
| 10954 | ADDIS_R2_R2 | PPC_HA (r2off), loc); | |
| 00f412ee AM |
10955 | } |
| 10956 | if (PPC_LO (r2off) != 0) | |
| 10957 | { | |
| 10958 | size += 4; | |
| ac2df442 | 10959 | loc += 4; |
| e7d1c40c AM |
10960 | bfd_put_32 (htab->params->stub_bfd, |
| 10961 | ADDI_R2_R2 | PPC_LO (r2off), loc); | |
| ac2df442 | 10962 | } |
| ad8e1ba5 AM |
10963 | } |
| 10964 | loc += 4; | |
| e7d1c40c | 10965 | bfd_put_32 (htab->params->stub_bfd, MTCTR_R12, loc); |
| ad8e1ba5 | 10966 | loc += 4; |
| e7d1c40c | 10967 | bfd_put_32 (htab->params->stub_bfd, BCTR, loc); |
| 721956f4 | 10968 | break; |
| 5d1634d7 | 10969 | |
| 721956f4 | 10970 | case ppc_stub_plt_call: |
| 794e51c0 | 10971 | case ppc_stub_plt_call_r2save: |
| e054468f | 10972 | if (stub_entry->h != NULL |
| b31867b6 AM |
10973 | && stub_entry->h->is_func_descriptor |
| 10974 | && stub_entry->h->oh != NULL) | |
| c862ae31 | 10975 | { |
| b31867b6 AM |
10976 | struct ppc_link_hash_entry *fh = ppc_follow_link (stub_entry->h->oh); |
| 10977 | ||
| 10978 | /* If the old-ABI "dot-symbol" is undefined make it weak so | |
| 6f20ed8a | 10979 | we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL. */ |
| b31867b6 AM |
10980 | if (fh->elf.root.type == bfd_link_hash_undefined) |
| 10981 | fh->elf.root.type = bfd_link_hash_undefweak; | |
| 9507a174 AM |
10982 | /* Stop undo_symbol_twiddle changing it back to undefined. */ |
| 10983 | fh->was_undefined = 0; | |
| c862ae31 AM |
10984 | } |
| 10985 | ||
| 721956f4 | 10986 | /* Now build the stub. */ |
| e054468f | 10987 | dest = stub_entry->plt_ent->plt.offset & ~1; |
| 176a0d42 | 10988 | if (dest >= (bfd_vma) -2) |
| 721956f4 AM |
10989 | abort (); |
| 10990 | ||
| 33e44f2e | 10991 | plt = htab->elf.splt; |
| 25f23106 AM |
10992 | if (!htab->elf.dynamic_sections_created |
| 10993 | || stub_entry->h == NULL | |
| 10994 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 10995 | plt = htab->elf.iplt; |
| e054468f AM |
10996 | |
| 10997 | dest += plt->output_offset + plt->output_section->vma; | |
| 10998 | ||
| 10999 | if (stub_entry->h == NULL | |
| 11000 | && (stub_entry->plt_ent->plt.offset & 1) == 0) | |
| 11001 | { | |
| 11002 | Elf_Internal_Rela rela; | |
| 11003 | bfd_byte *rl; | |
| 11004 | ||
| 11005 | rela.r_offset = dest; | |
| ee67d69a AM |
11006 | if (htab->opd_abi) |
| 11007 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 11008 | else | |
| 11009 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
11010 | rela.r_addend = (stub_entry->target_value |
| 11011 | + stub_entry->target_section->output_offset | |
| 11012 | + stub_entry->target_section->output_section->vma); | |
| 11013 | ||
| 33e44f2e AM |
11014 | rl = (htab->elf.irelplt->contents |
| 11015 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 AM |
11016 | * sizeof (Elf64_External_Rela))); |
| 11017 | bfd_elf64_swap_reloca_out (info->output_bfd, &rela, rl); | |
| e054468f AM |
11018 | stub_entry->plt_ent->plt.offset |= 1; |
| 11019 | } | |
| 176a0d42 AM |
11020 | |
| 11021 | off = (dest | |
| e054468f | 11022 | - elf_gp (plt->output_section->owner) |
| 6f20ed8a | 11023 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 11024 | |
| ad8e1ba5 | 11025 | if (off + 0x80008000 > 0xffffffff || (off & 7) != 0) |
| 721956f4 | 11026 | { |
| 25f53a85 | 11027 | info->callbacks->einfo |
| bc30df16 | 11028 | (_("%P: linkage table error against `%T'\n"), |
| e054468f AM |
11029 | stub_entry->h != NULL |
| 11030 | ? stub_entry->h->elf.root.root.string | |
| 11031 | : "<local sym>"); | |
| 721956f4 | 11032 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 AM |
11033 | htab->stub_error = TRUE; |
| 11034 | return FALSE; | |
| 721956f4 AM |
11035 | } |
| 11036 | ||
| e7d1c40c | 11037 | if (htab->params->plt_stub_align != 0) |
| 794e51c0 AM |
11038 | { |
| 11039 | unsigned pad = plt_stub_pad (htab, stub_entry, off); | |
| 11040 | ||
| 6f20ed8a AM |
11041 | stub_entry->group->stub_sec->size += pad; |
| 11042 | stub_entry->stub_offset = stub_entry->group->stub_sec->size; | |
| 794e51c0 AM |
11043 | loc += pad; |
| 11044 | } | |
| 11045 | ||
| 176a0d42 AM |
11046 | r = NULL; |
| 11047 | if (info->emitrelocations) | |
| 11048 | { | |
| 6f20ed8a | 11049 | r = get_relocs (stub_entry->group->stub_sec, |
| 3ba720c7 AM |
11050 | ((PPC_HA (off) != 0) |
| 11051 | + (htab->opd_abi | |
| e7d1c40c | 11052 | ? 2 + (htab->params->plt_static_chain |
| 3ba720c7 AM |
11053 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 11054 | : 1))); | |
| 176a0d42 AM |
11055 | if (r == NULL) |
| 11056 | return FALSE; | |
| 6f20ed8a | 11057 | r[0].r_offset = loc - stub_entry->group->stub_sec->contents; |
| 7cfbafbc AM |
11058 | if (bfd_big_endian (info->output_bfd)) |
| 11059 | r[0].r_offset += 2; | |
| 176a0d42 AM |
11060 | r[0].r_addend = dest; |
| 11061 | } | |
| a7f2871e AM |
11062 | if (stub_entry->h != NULL |
| 11063 | && (stub_entry->h == htab->tls_get_addr_fd | |
| 11064 | || stub_entry->h == htab->tls_get_addr) | |
| 7c9cf415 | 11065 | && htab->params->tls_get_addr_opt) |
| 794e51c0 | 11066 | p = build_tls_get_addr_stub (htab, stub_entry, loc, off, r); |
| a7f2871e | 11067 | else |
| 794e51c0 | 11068 | p = build_plt_stub (htab, stub_entry, loc, off, r); |
| 721956f4 AM |
11069 | size = p - loc; |
| 11070 | break; | |
| 11071 | ||
| a4b6fadd AM |
11072 | case ppc_stub_save_res: |
| 11073 | return TRUE; | |
| 11074 | ||
| 721956f4 AM |
11075 | default: |
| 11076 | BFD_FAIL (); | |
| b34976b6 | 11077 | return FALSE; |
| 721956f4 AM |
11078 | } |
| 11079 | ||
| 6f20ed8a | 11080 | stub_entry->group->stub_sec->size += size; |
| 97b639ba | 11081 | |
| e7d1c40c | 11082 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
11083 | { |
| 11084 | struct elf_link_hash_entry *h; | |
| ee75fd95 AM |
11085 | size_t len1, len2; |
| 11086 | char *name; | |
| 11087 | const char *const stub_str[] = { "long_branch", | |
| 11088 | "long_branch_r2off", | |
| 11089 | "plt_branch", | |
| 11090 | "plt_branch_r2off", | |
| 794e51c0 | 11091 | "plt_call", |
| ee75fd95 AM |
11092 | "plt_call" }; |
| 11093 | ||
| 11094 | len1 = strlen (stub_str[stub_entry->stub_type - 1]); | |
| 11095 | len2 = strlen (stub_entry->root.string); | |
| 11096 | name = bfd_malloc (len1 + len2 + 2); | |
| 11097 | if (name == NULL) | |
| 11098 | return FALSE; | |
| 11099 | memcpy (name, stub_entry->root.string, 9); | |
| 11100 | memcpy (name + 9, stub_str[stub_entry->stub_type - 1], len1); | |
| 11101 | memcpy (name + len1 + 9, stub_entry->root.string + 8, len2 - 8 + 1); | |
| 11102 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 97b639ba AM |
11103 | if (h == NULL) |
| 11104 | return FALSE; | |
| 11105 | if (h->root.type == bfd_link_hash_new) | |
| 11106 | { | |
| 11107 | h->root.type = bfd_link_hash_defined; | |
| 6f20ed8a | 11108 | h->root.u.def.section = stub_entry->group->stub_sec; |
| 97b639ba | 11109 | h->root.u.def.value = stub_entry->stub_offset; |
| f5385ebf AM |
11110 | h->ref_regular = 1; |
| 11111 | h->def_regular = 1; | |
| 11112 | h->ref_regular_nonweak = 1; | |
| 11113 | h->forced_local = 1; | |
| 11114 | h->non_elf = 0; | |
| 2ec55de3 | 11115 | h->root.linker_def = 1; |
| 97b639ba AM |
11116 | } |
| 11117 | } | |
| 11118 | ||
| b34976b6 | 11119 | return TRUE; |
| 721956f4 AM |
11120 | } |
| 11121 | ||
| 11122 | /* As above, but don't actually build the stub. Just bump offset so | |
| 11123 | we know stub section sizes, and select plt_branch stubs where | |
| 11124 | long_branch stubs won't do. */ | |
| 11125 | ||
| b34976b6 | 11126 | static bfd_boolean |
| 4ce794b7 | 11127 | ppc_size_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) |
| 721956f4 AM |
11128 | { |
| 11129 | struct ppc_stub_hash_entry *stub_entry; | |
| 63bc6f6c | 11130 | struct bfd_link_info *info; |
| 721956f4 AM |
11131 | struct ppc_link_hash_table *htab; |
| 11132 | bfd_vma off; | |
| 11133 | int size; | |
| 11134 | ||
| 11135 | /* Massage our args to the form they really have. */ | |
| 11136 | stub_entry = (struct ppc_stub_hash_entry *) gen_entry; | |
| 63bc6f6c AM |
11137 | info = in_arg; |
| 11138 | ||
| 11139 | htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
11140 | if (htab == NULL) |
| 11141 | return FALSE; | |
| 721956f4 | 11142 | |
| a4b6fadd AM |
11143 | if (stub_entry->h != NULL |
| 11144 | && stub_entry->h->save_res | |
| 11145 | && stub_entry->h->elf.root.type == bfd_link_hash_defined | |
| 11146 | && stub_entry->h->elf.root.u.def.section == htab->sfpr) | |
| 11147 | { | |
| 11148 | /* Don't make stubs to out-of-line register save/restore | |
| 11149 | functions. Instead, emit copies of the functions. */ | |
| 11150 | stub_entry->group->needs_save_res = 1; | |
| 11151 | stub_entry->stub_type = ppc_stub_save_res; | |
| 11152 | return TRUE; | |
| 11153 | } | |
| 11154 | ||
| 794e51c0 AM |
11155 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 11156 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 721956f4 | 11157 | { |
| e054468f AM |
11158 | asection *plt; |
| 11159 | off = stub_entry->plt_ent->plt.offset & ~(bfd_vma) 1; | |
| 58ac9f71 | 11160 | if (off >= (bfd_vma) -2) |
| 411e1bfb | 11161 | abort (); |
| 33e44f2e | 11162 | plt = htab->elf.splt; |
| 25f23106 AM |
11163 | if (!htab->elf.dynamic_sections_created |
| 11164 | || stub_entry->h == NULL | |
| 11165 | || stub_entry->h->elf.dynindx == -1) | |
| 33e44f2e | 11166 | plt = htab->elf.iplt; |
| e054468f AM |
11167 | off += (plt->output_offset |
| 11168 | + plt->output_section->vma | |
| 11169 | - elf_gp (plt->output_section->owner) | |
| 6f20ed8a | 11170 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| 721956f4 | 11171 | |
| 794e51c0 | 11172 | size = plt_stub_size (htab, stub_entry, off); |
| e7d1c40c | 11173 | if (htab->params->plt_stub_align) |
| 794e51c0 | 11174 | size += plt_stub_pad (htab, stub_entry, off); |
| 176a0d42 AM |
11175 | if (info->emitrelocations) |
| 11176 | { | |
| 6f20ed8a | 11177 | stub_entry->group->stub_sec->reloc_count |
| b9e5796b AM |
11178 | += ((PPC_HA (off) != 0) |
| 11179 | + (htab->opd_abi | |
| e7d1c40c | 11180 | ? 2 + (htab->params->plt_static_chain |
| b9e5796b AM |
11181 | && PPC_HA (off + 16) == PPC_HA (off)) |
| 11182 | : 1)); | |
| 6f20ed8a | 11183 | stub_entry->group->stub_sec->flags |= SEC_RELOC; |
| 176a0d42 | 11184 | } |
| 721956f4 AM |
11185 | } |
| 11186 | else | |
| 11187 | { | |
| ad8e1ba5 AM |
11188 | /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off |
| 11189 | variants. */ | |
| ac2df442 | 11190 | bfd_vma r2off = 0; |
| 6911b7dc | 11191 | bfd_vma local_off = 0; |
| ac2df442 | 11192 | |
| 721956f4 AM |
11193 | off = (stub_entry->target_value |
| 11194 | + stub_entry->target_section->output_offset | |
| 11195 | + stub_entry->target_section->output_section->vma); | |
| 6f20ed8a AM |
11196 | off -= (stub_entry->group->stub_sec->size |
| 11197 | + stub_entry->group->stub_sec->output_offset | |
| 11198 | + stub_entry->group->stub_sec->output_section->vma); | |
| 721956f4 | 11199 | |
| ad8e1ba5 AM |
11200 | /* Reset the stub type from the plt variant in case we now |
| 11201 | can reach with a shorter stub. */ | |
| 11202 | if (stub_entry->stub_type >= ppc_stub_plt_branch) | |
| 11203 | stub_entry->stub_type += ppc_stub_long_branch - ppc_stub_plt_branch; | |
| 11204 | ||
| 11205 | size = 4; | |
| 11206 | if (stub_entry->stub_type == ppc_stub_long_branch_r2off) | |
| 11207 | { | |
| 25f53a85 | 11208 | r2off = get_r2off (info, stub_entry); |
| a7c49797 | 11209 | if (r2off == (bfd_vma) -1) |
| aa374f67 AM |
11210 | { |
| 11211 | htab->stub_error = TRUE; | |
| 11212 | return FALSE; | |
| 11213 | } | |
| a7c49797 | 11214 | size = 8; |
| ac2df442 | 11215 | if (PPC_HA (r2off) != 0) |
| a7c49797 AM |
11216 | size += 4; |
| 11217 | if (PPC_LO (r2off) != 0) | |
| 11218 | size += 4; | |
| ac2df442 | 11219 | off -= size - 4; |
| ad8e1ba5 AM |
11220 | } |
| 11221 | ||
| 6911b7dc AM |
11222 | local_off = PPC64_LOCAL_ENTRY_OFFSET (stub_entry->other); |
| 11223 | ||
| b9e5796b AM |
11224 | /* If the branch offset if too big, use a ppc_stub_plt_branch. |
| 11225 | Do the same for -R objects without function descriptors. */ | |
| 11226 | if (off + (1 << 25) >= (bfd_vma) (1 << 26) - local_off | |
| 11227 | || (stub_entry->stub_type == ppc_stub_long_branch_r2off | |
| a7c49797 AM |
11228 | && r2off == 0 |
| 11229 | && htab->sec_info[stub_entry->target_section->id].toc_off == 0)) | |
| 721956f4 AM |
11230 | { |
| 11231 | struct ppc_branch_hash_entry *br_entry; | |
| 11232 | ||
| 11233 | br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table, | |
| 11234 | stub_entry->root.string + 9, | |
| b34976b6 | 11235 | TRUE, FALSE); |
| 721956f4 AM |
11236 | if (br_entry == NULL) |
| 11237 | { | |
| 8de848d8 | 11238 | info->callbacks->einfo (_("%P: can't build branch stub `%s'\n"), |
| 25f53a85 | 11239 | stub_entry->root.string); |
| b34976b6 AM |
11240 | htab->stub_error = TRUE; |
| 11241 | return FALSE; | |
| 721956f4 AM |
11242 | } |
| 11243 | ||
| 11244 | if (br_entry->iter != htab->stub_iteration) | |
| 11245 | { | |
| 11246 | br_entry->iter = htab->stub_iteration; | |
| eea6121a AM |
11247 | br_entry->offset = htab->brlt->size; |
| 11248 | htab->brlt->size += 8; | |
| 63bc6f6c | 11249 | |
| ee75fd95 | 11250 | if (htab->relbrlt != NULL) |
| eea6121a | 11251 | htab->relbrlt->size += sizeof (Elf64_External_Rela); |
| 84f5d08e AM |
11252 | else if (info->emitrelocations) |
| 11253 | { | |
| 11254 | htab->brlt->reloc_count += 1; | |
| 11255 | htab->brlt->flags |= SEC_RELOC; | |
| 11256 | } | |
| 721956f4 | 11257 | } |
| ad8e1ba5 AM |
11258 | |
| 11259 | stub_entry->stub_type += ppc_stub_plt_branch - ppc_stub_long_branch; | |
| ac2df442 AM |
11260 | off = (br_entry->offset |
| 11261 | + htab->brlt->output_offset | |
| 11262 | + htab->brlt->output_section->vma | |
| 11263 | - elf_gp (htab->brlt->output_section->owner) | |
| 6f20ed8a | 11264 | - htab->sec_info[stub_entry->group->link_sec->id].toc_off); |
| ac2df442 | 11265 | |
| 176a0d42 AM |
11266 | if (info->emitrelocations) |
| 11267 | { | |
| 6f20ed8a AM |
11268 | stub_entry->group->stub_sec->reloc_count |
| 11269 | += 1 + (PPC_HA (off) != 0); | |
| 11270 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
| 176a0d42 AM |
11271 | } |
| 11272 | ||
| 00f412ee | 11273 | if (stub_entry->stub_type != ppc_stub_plt_branch_r2off) |
| ac2df442 AM |
11274 | { |
| 11275 | size = 12; | |
| 176a0d42 | 11276 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11277 | size = 16; |
| 11278 | } | |
| 11279 | else | |
| 11280 | { | |
| 00f412ee | 11281 | size = 16; |
| 176a0d42 | 11282 | if (PPC_HA (off) != 0) |
| ac2df442 AM |
11283 | size += 4; |
| 11284 | ||
| 11285 | if (PPC_HA (r2off) != 0) | |
| 11286 | size += 4; | |
| 00f412ee AM |
11287 | if (PPC_LO (r2off) != 0) |
| 11288 | size += 4; | |
| ac2df442 | 11289 | } |
| 721956f4 | 11290 | } |
| 84f5d08e AM |
11291 | else if (info->emitrelocations) |
| 11292 | { | |
| 6f20ed8a AM |
11293 | stub_entry->group->stub_sec->reloc_count += 1; |
| 11294 | stub_entry->group->stub_sec->flags |= SEC_RELOC; | |
| 84f5d08e | 11295 | } |
| 721956f4 AM |
11296 | } |
| 11297 | ||
| 6f20ed8a | 11298 | stub_entry->group->stub_sec->size += size; |
| b34976b6 | 11299 | return TRUE; |
| 721956f4 AM |
11300 | } |
| 11301 | ||
| 11302 | /* Set up various things so that we can make a list of input sections | |
| 11303 | for each output section included in the link. Returns -1 on error, | |
| cedb70c5 | 11304 | 0 when no stubs will be needed, and 1 on success. */ |
| 721956f4 AM |
11305 | |
| 11306 | int | |
| e7d1c40c | 11307 | ppc64_elf_setup_section_lists (struct bfd_link_info *info) |
| 721956f4 | 11308 | { |
| 6f20ed8a | 11309 | unsigned int id; |
| 721956f4 AM |
11310 | bfd_size_type amt; |
| 11311 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11312 | ||
| 4dfe6ac6 NC |
11313 | if (htab == NULL) |
| 11314 | return -1; | |
| 4c52953f | 11315 | |
| 6f20ed8a AM |
11316 | htab->sec_info_arr_size = bfd_get_next_section_id (); |
| 11317 | amt = sizeof (*htab->sec_info) * (htab->sec_info_arr_size); | |
| 11318 | htab->sec_info = bfd_zmalloc (amt); | |
| 11319 | if (htab->sec_info == NULL) | |
| 721956f4 AM |
11320 | return -1; |
| 11321 | ||
| 3d6f9012 AM |
11322 | /* Set toc_off for com, und, abs and ind sections. */ |
| 11323 | for (id = 0; id < 3; id++) | |
| 6f20ed8a | 11324 | htab->sec_info[id].toc_off = TOC_BASE_OFF; |
| 734b6cf9 | 11325 | |
| 721956f4 AM |
11326 | return 1; |
| 11327 | } | |
| 11328 | ||
| 927be08e AM |
11329 | /* Set up for first pass at multitoc partitioning. */ |
| 11330 | ||
| 11331 | void | |
| 11332 | ppc64_elf_start_multitoc_partition (struct bfd_link_info *info) | |
| 11333 | { | |
| 11334 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11335 | ||
| 1c865ab2 | 11336 | htab->toc_curr = ppc64_elf_set_toc (info, info->output_bfd); |
| 927be08e AM |
11337 | htab->toc_bfd = NULL; |
| 11338 | htab->toc_first_sec = NULL; | |
| 11339 | } | |
| 11340 | ||
| e717da7e AM |
11341 | /* The linker repeatedly calls this function for each TOC input section |
| 11342 | and linker generated GOT section. Group input bfds such that the toc | |
| 927be08e | 11343 | within a group is less than 64k in size. */ |
| ad8e1ba5 | 11344 | |
| 927be08e | 11345 | bfd_boolean |
| 4ce794b7 | 11346 | ppc64_elf_next_toc_section (struct bfd_link_info *info, asection *isec) |
| ad8e1ba5 AM |
11347 | { |
| 11348 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| d77c8a4b | 11349 | bfd_vma addr, off, limit; |
| ad8e1ba5 | 11350 | |
| 4dfe6ac6 NC |
11351 | if (htab == NULL) |
| 11352 | return FALSE; | |
| 11353 | ||
| 927be08e | 11354 | if (!htab->second_toc_pass) |
| 4c52953f | 11355 | { |
| 927be08e | 11356 | /* Keep track of the first .toc or .got section for this input bfd. */ |
| a4fd3de5 AM |
11357 | bfd_boolean new_bfd = htab->toc_bfd != isec->owner; |
| 11358 | ||
| 11359 | if (new_bfd) | |
| bf102f86 AM |
11360 | { |
| 11361 | htab->toc_bfd = isec->owner; | |
| 11362 | htab->toc_first_sec = isec; | |
| 11363 | } | |
| 927be08e | 11364 | |
| bf102f86 AM |
11365 | addr = isec->output_offset + isec->output_section->vma; |
| 11366 | off = addr - htab->toc_curr; | |
| d77c8a4b AM |
11367 | limit = 0x80008000; |
| 11368 | if (ppc64_elf_tdata (isec->owner)->has_small_toc_reloc) | |
| 11369 | limit = 0x10000; | |
| 11370 | if (off + isec->size > limit) | |
| bf102f86 AM |
11371 | { |
| 11372 | addr = (htab->toc_first_sec->output_offset | |
| 11373 | + htab->toc_first_sec->output_section->vma); | |
| 11374 | htab->toc_curr = addr; | |
| a27e685f | 11375 | htab->toc_curr &= -TOC_BASE_ALIGN; |
| bf102f86 | 11376 | } |
| 99877b66 | 11377 | |
| 927be08e AM |
11378 | /* toc_curr is the base address of this toc group. Set elf_gp |
| 11379 | for the input section to be the offset relative to the | |
| 11380 | output toc base plus 0x8000. Making the input elf_gp an | |
| 11381 | offset allows us to move the toc as a whole without | |
| 11382 | recalculating input elf_gp. */ | |
| 11383 | off = htab->toc_curr - elf_gp (isec->output_section->owner); | |
| 11384 | off += TOC_BASE_OFF; | |
| 11385 | ||
| 11386 | /* Die if someone uses a linker script that doesn't keep input | |
| 11387 | file .toc and .got together. */ | |
| a4fd3de5 AM |
11388 | if (new_bfd |
| 11389 | && elf_gp (isec->owner) != 0 | |
| 927be08e AM |
11390 | && elf_gp (isec->owner) != off) |
| 11391 | return FALSE; | |
| 11392 | ||
| 11393 | elf_gp (isec->owner) = off; | |
| 11394 | return TRUE; | |
| 4c52953f | 11395 | } |
| 927be08e AM |
11396 | |
| 11397 | /* During the second pass toc_first_sec points to the start of | |
| 11398 | a toc group, and toc_curr is used to track the old elf_gp. | |
| 11399 | We use toc_bfd to ensure we only look at each bfd once. */ | |
| 11400 | if (htab->toc_bfd == isec->owner) | |
| 11401 | return TRUE; | |
| 11402 | htab->toc_bfd = isec->owner; | |
| 11403 | ||
| 11404 | if (htab->toc_first_sec == NULL | |
| 11405 | || htab->toc_curr != elf_gp (isec->owner)) | |
| 11406 | { | |
| 11407 | htab->toc_curr = elf_gp (isec->owner); | |
| 11408 | htab->toc_first_sec = isec; | |
| 11409 | } | |
| 11410 | addr = (htab->toc_first_sec->output_offset | |
| 11411 | + htab->toc_first_sec->output_section->vma); | |
| 11412 | off = addr - elf_gp (isec->output_section->owner) + TOC_BASE_OFF; | |
| 11413 | elf_gp (isec->owner) = off; | |
| 11414 | ||
| 11415 | return TRUE; | |
| ad8e1ba5 AM |
11416 | } |
| 11417 | ||
| 927be08e AM |
11418 | /* Called via elf_link_hash_traverse to merge GOT entries for global |
| 11419 | symbol H. */ | |
| 11420 | ||
| 11421 | static bfd_boolean | |
| 11422 | merge_global_got (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 11423 | { | |
| 11424 | if (h->root.type == bfd_link_hash_indirect) | |
| 11425 | return TRUE; | |
| 11426 | ||
| 927be08e AM |
11427 | merge_got_entries (&h->got.glist); |
| 11428 | ||
| 11429 | return TRUE; | |
| 11430 | } | |
| 11431 | ||
| 11432 | /* Called via elf_link_hash_traverse to allocate GOT entries for global | |
| 11433 | symbol H. */ | |
| 11434 | ||
| 11435 | static bfd_boolean | |
| 11436 | reallocate_got (struct elf_link_hash_entry *h, void *inf) | |
| 11437 | { | |
| 11438 | struct got_entry *gent; | |
| 11439 | ||
| 11440 | if (h->root.type == bfd_link_hash_indirect) | |
| 11441 | return TRUE; | |
| 11442 | ||
| 927be08e AM |
11443 | for (gent = h->got.glist; gent != NULL; gent = gent->next) |
| 11444 | if (!gent->is_indirect) | |
| 11445 | allocate_got (h, (struct bfd_link_info *) inf, gent); | |
| 11446 | return TRUE; | |
| 11447 | } | |
| 11448 | ||
| 11449 | /* Called on the first multitoc pass after the last call to | |
| 11450 | ppc64_elf_next_toc_section. This function removes duplicate GOT | |
| 11451 | entries. */ | |
| 11452 | ||
| 11453 | bfd_boolean | |
| 11454 | ppc64_elf_layout_multitoc (struct bfd_link_info *info) | |
| ad8e1ba5 AM |
11455 | { |
| 11456 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 927be08e AM |
11457 | struct bfd *ibfd, *ibfd2; |
| 11458 | bfd_boolean done_something; | |
| 11459 | ||
| 11460 | htab->multi_toc_needed = htab->toc_curr != elf_gp (info->output_bfd); | |
| ad8e1ba5 | 11461 | |
| 7865406b AM |
11462 | if (!htab->do_multi_toc) |
| 11463 | return FALSE; | |
| 11464 | ||
| d0fae19d | 11465 | /* Merge global sym got entries within a toc group. */ |
| 927be08e AM |
11466 | elf_link_hash_traverse (&htab->elf, merge_global_got, info); |
| 11467 | ||
| 11468 | /* And tlsld_got. */ | |
| c72f2fb2 | 11469 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11470 | { |
| 11471 | struct got_entry *ent, *ent2; | |
| 11472 | ||
| 11473 | if (!is_ppc64_elf (ibfd)) | |
| 11474 | continue; | |
| 11475 | ||
| 11476 | ent = ppc64_tlsld_got (ibfd); | |
| 11477 | if (!ent->is_indirect | |
| 11478 | && ent->got.offset != (bfd_vma) -1) | |
| 11479 | { | |
| c72f2fb2 | 11480 | for (ibfd2 = ibfd->link.next; ibfd2 != NULL; ibfd2 = ibfd2->link.next) |
| 927be08e AM |
11481 | { |
| 11482 | if (!is_ppc64_elf (ibfd2)) | |
| 11483 | continue; | |
| 11484 | ||
| 11485 | ent2 = ppc64_tlsld_got (ibfd2); | |
| 11486 | if (!ent2->is_indirect | |
| 11487 | && ent2->got.offset != (bfd_vma) -1 | |
| 11488 | && elf_gp (ibfd2) == elf_gp (ibfd)) | |
| 11489 | { | |
| 11490 | ent2->is_indirect = TRUE; | |
| 11491 | ent2->got.ent = ent; | |
| 11492 | } | |
| 11493 | } | |
| 11494 | } | |
| 11495 | } | |
| 11496 | ||
| 11497 | /* Zap sizes of got sections. */ | |
| 33e44f2e AM |
11498 | htab->elf.irelplt->rawsize = htab->elf.irelplt->size; |
| 11499 | htab->elf.irelplt->size -= htab->got_reli_size; | |
| 927be08e AM |
11500 | htab->got_reli_size = 0; |
| 11501 | ||
| c72f2fb2 | 11502 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11503 | { |
| 11504 | asection *got, *relgot; | |
| 11505 | ||
| 11506 | if (!is_ppc64_elf (ibfd)) | |
| 11507 | continue; | |
| 11508 | ||
| 11509 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11510 | if (got != NULL) | |
| 11511 | { | |
| 11512 | got->rawsize = got->size; | |
| 11513 | got->size = 0; | |
| 11514 | relgot = ppc64_elf_tdata (ibfd)->relgot; | |
| 11515 | relgot->rawsize = relgot->size; | |
| 11516 | relgot->size = 0; | |
| 11517 | } | |
| 11518 | } | |
| 11519 | ||
| 11520 | /* Now reallocate the got, local syms first. We don't need to | |
| 11521 | allocate section contents again since we never increase size. */ | |
| c72f2fb2 | 11522 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11523 | { |
| 11524 | struct got_entry **lgot_ents; | |
| 11525 | struct got_entry **end_lgot_ents; | |
| 11526 | struct plt_entry **local_plt; | |
| 11527 | struct plt_entry **end_local_plt; | |
| f961d9dd | 11528 | unsigned char *lgot_masks; |
| 927be08e AM |
11529 | bfd_size_type locsymcount; |
| 11530 | Elf_Internal_Shdr *symtab_hdr; | |
| 19e08130 | 11531 | asection *s; |
| 927be08e AM |
11532 | |
| 11533 | if (!is_ppc64_elf (ibfd)) | |
| 11534 | continue; | |
| 11535 | ||
| 11536 | lgot_ents = elf_local_got_ents (ibfd); | |
| 11537 | if (!lgot_ents) | |
| 11538 | continue; | |
| 11539 | ||
| 11540 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
| 11541 | locsymcount = symtab_hdr->sh_info; | |
| 11542 | end_lgot_ents = lgot_ents + locsymcount; | |
| 11543 | local_plt = (struct plt_entry **) end_lgot_ents; | |
| 11544 | end_local_plt = local_plt + locsymcount; | |
| f961d9dd | 11545 | lgot_masks = (unsigned char *) end_local_plt; |
| 927be08e | 11546 | s = ppc64_elf_tdata (ibfd)->got; |
| 927be08e AM |
11547 | for (; lgot_ents < end_lgot_ents; ++lgot_ents, ++lgot_masks) |
| 11548 | { | |
| 11549 | struct got_entry *ent; | |
| 11550 | ||
| 11551 | for (ent = *lgot_ents; ent != NULL; ent = ent->next) | |
| d0fae19d | 11552 | { |
| 19e08130 AM |
11553 | unsigned int ent_size = 8; |
| 11554 | unsigned int rel_size = sizeof (Elf64_External_Rela); | |
| 11555 | ||
| d0fae19d AM |
11556 | ent->got.offset = s->size; |
| 11557 | if ((ent->tls_type & *lgot_masks & TLS_GD) != 0) | |
| d0fae19d | 11558 | { |
| 19e08130 AM |
11559 | ent_size *= 2; |
| 11560 | rel_size *= 2; | |
| 11561 | } | |
| 11562 | s->size += ent_size; | |
| 11563 | if ((*lgot_masks & PLT_IFUNC) != 0) | |
| 11564 | { | |
| 33e44f2e | 11565 | htab->elf.irelplt->size += rel_size; |
| 19e08130 AM |
11566 | htab->got_reli_size += rel_size; |
| 11567 | } | |
| 0e1862bb | 11568 | else if (bfd_link_pic (info)) |
| 19e08130 AM |
11569 | { |
| 11570 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11571 | srel->size += rel_size; | |
| d0fae19d AM |
11572 | } |
| 11573 | } | |
| 927be08e AM |
11574 | } |
| 11575 | } | |
| 11576 | ||
| 11577 | elf_link_hash_traverse (&htab->elf, reallocate_got, info); | |
| 11578 | ||
| c72f2fb2 | 11579 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11580 | { |
| 11581 | struct got_entry *ent; | |
| 11582 | ||
| 11583 | if (!is_ppc64_elf (ibfd)) | |
| 11584 | continue; | |
| 11585 | ||
| 11586 | ent = ppc64_tlsld_got (ibfd); | |
| 11587 | if (!ent->is_indirect | |
| 11588 | && ent->got.offset != (bfd_vma) -1) | |
| 11589 | { | |
| 11590 | asection *s = ppc64_elf_tdata (ibfd)->got; | |
| 11591 | ent->got.offset = s->size; | |
| 11592 | s->size += 16; | |
| 0e1862bb | 11593 | if (bfd_link_pic (info)) |
| 927be08e AM |
11594 | { |
| 11595 | asection *srel = ppc64_elf_tdata (ibfd)->relgot; | |
| 11596 | srel->size += sizeof (Elf64_External_Rela); | |
| 11597 | } | |
| 11598 | } | |
| 11599 | } | |
| 11600 | ||
| 33e44f2e | 11601 | done_something = htab->elf.irelplt->rawsize != htab->elf.irelplt->size; |
| 927be08e | 11602 | if (!done_something) |
| c72f2fb2 | 11603 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
| 927be08e AM |
11604 | { |
| 11605 | asection *got; | |
| 11606 | ||
| 11607 | if (!is_ppc64_elf (ibfd)) | |
| 11608 | continue; | |
| 11609 | ||
| 11610 | got = ppc64_elf_tdata (ibfd)->got; | |
| 11611 | if (got != NULL) | |
| 11612 | { | |
| 11613 | done_something = got->rawsize != got->size; | |
| 11614 | if (done_something) | |
| 11615 | break; | |
| 11616 | } | |
| 11617 | } | |
| 11618 | ||
| 11619 | if (done_something) | |
| e7d1c40c | 11620 | (*htab->params->layout_sections_again) (); |
| 927be08e AM |
11621 | |
| 11622 | /* Set up for second pass over toc sections to recalculate elf_gp | |
| 11623 | on input sections. */ | |
| 11624 | htab->toc_bfd = NULL; | |
| 11625 | htab->toc_first_sec = NULL; | |
| 11626 | htab->second_toc_pass = TRUE; | |
| 11627 | return done_something; | |
| 11628 | } | |
| 11629 | ||
| 11630 | /* Called after second pass of multitoc partitioning. */ | |
| 11631 | ||
| 11632 | void | |
| 11633 | ppc64_elf_finish_multitoc_partition (struct bfd_link_info *info) | |
| 11634 | { | |
| 11635 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11636 | ||
| 11637 | /* After the second pass, toc_curr tracks the TOC offset used | |
| 11638 | for code sections below in ppc64_elf_next_input_section. */ | |
| 3d6f9012 | 11639 | htab->toc_curr = TOC_BASE_OFF; |
| ad8e1ba5 AM |
11640 | } |
| 11641 | ||
| 9b5ecbd0 AM |
11642 | /* No toc references were found in ISEC. If the code in ISEC makes no |
| 11643 | calls, then there's no need to use toc adjusting stubs when branching | |
| 11644 | into ISEC. Actually, indirect calls from ISEC are OK as they will | |
| 4c52953f AM |
11645 | load r2. Returns -1 on error, 0 for no stub needed, 1 for stub |
| 11646 | needed, and 2 if a cyclical call-graph was found but no other reason | |
| 11647 | for a stub was detected. If called from the top level, a return of | |
| 11648 | 2 means the same as a return of 0. */ | |
| 9b5ecbd0 AM |
11649 | |
| 11650 | static int | |
| 4ce794b7 | 11651 | toc_adjusting_stub_needed (struct bfd_link_info *info, asection *isec) |
| 9b5ecbd0 | 11652 | { |
| 9b5ecbd0 | 11653 | int ret; |
| 70cc837d AM |
11654 | |
| 11655 | /* Mark this section as checked. */ | |
| 11656 | isec->call_check_done = 1; | |
| 9b5ecbd0 | 11657 | |
| 772119ce AM |
11658 | /* We know none of our code bearing sections will need toc stubs. */ |
| 11659 | if ((isec->flags & SEC_LINKER_CREATED) != 0) | |
| 11660 | return 0; | |
| 11661 | ||
| eea6121a | 11662 | if (isec->size == 0) |
| 082c50f8 AM |
11663 | return 0; |
| 11664 | ||
| 4c52953f AM |
11665 | if (isec->output_section == NULL) |
| 11666 | return 0; | |
| 11667 | ||
| 4c52953f | 11668 | ret = 0; |
| 70cc837d | 11669 | if (isec->reloc_count != 0) |
| 9b5ecbd0 | 11670 | { |
| 70cc837d AM |
11671 | Elf_Internal_Rela *relstart, *rel; |
| 11672 | Elf_Internal_Sym *local_syms; | |
| 11673 | struct ppc_link_hash_table *htab; | |
| 2917689a | 11674 | |
| 70cc837d AM |
11675 | relstart = _bfd_elf_link_read_relocs (isec->owner, isec, NULL, NULL, |
| 11676 | info->keep_memory); | |
| 11677 | if (relstart == NULL) | |
| 11678 | return -1; | |
| 90aecf7a | 11679 | |
| 70cc837d AM |
11680 | /* Look for branches to outside of this section. */ |
| 11681 | local_syms = NULL; | |
| 11682 | htab = ppc_hash_table (info); | |
| 11683 | if (htab == NULL) | |
| 11684 | return -1; | |
| 4c52953f | 11685 | |
| 70cc837d | 11686 | for (rel = relstart; rel < relstart + isec->reloc_count; ++rel) |
| 4c52953f | 11687 | { |
| 70cc837d AM |
11688 | enum elf_ppc64_reloc_type r_type; |
| 11689 | unsigned long r_symndx; | |
| 11690 | struct elf_link_hash_entry *h; | |
| 11691 | struct ppc_link_hash_entry *eh; | |
| 11692 | Elf_Internal_Sym *sym; | |
| 11693 | asection *sym_sec; | |
| 11694 | struct _opd_sec_data *opd; | |
| 11695 | bfd_vma sym_value; | |
| 11696 | bfd_vma dest; | |
| 11697 | ||
| 11698 | r_type = ELF64_R_TYPE (rel->r_info); | |
| 11699 | if (r_type != R_PPC64_REL24 | |
| 11700 | && r_type != R_PPC64_REL14 | |
| 11701 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 11702 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 11703 | continue; | |
| 4c52953f | 11704 | |
| 70cc837d AM |
11705 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 11706 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, r_symndx, | |
| 11707 | isec->owner)) | |
| 4c52953f | 11708 | { |
| 70cc837d AM |
11709 | ret = -1; |
| 11710 | break; | |
| 11711 | } | |
| 4c52953f | 11712 | |
| 70cc837d AM |
11713 | /* Calls to dynamic lib functions go through a plt call stub |
| 11714 | that uses r2. */ | |
| 11715 | eh = (struct ppc_link_hash_entry *) h; | |
| 11716 | if (eh != NULL | |
| 11717 | && (eh->elf.plt.plist != NULL | |
| 11718 | || (eh->oh != NULL | |
| 11719 | && ppc_follow_link (eh->oh)->elf.plt.plist != NULL))) | |
| 11720 | { | |
| 11721 | ret = 1; | |
| 11722 | break; | |
| 4c52953f AM |
11723 | } |
| 11724 | ||
| 70cc837d AM |
11725 | if (sym_sec == NULL) |
| 11726 | /* Ignore other undefined symbols. */ | |
| 4c52953f | 11727 | continue; |
| 4c52953f | 11728 | |
| 70cc837d AM |
11729 | /* Assume branches to other sections not included in the |
| 11730 | link need stubs too, to cover -R and absolute syms. */ | |
| 11731 | if (sym_sec->output_section == NULL) | |
| 11732 | { | |
| 11733 | ret = 1; | |
| 11734 | break; | |
| 11735 | } | |
| 4c52953f | 11736 | |
| 70cc837d AM |
11737 | if (h == NULL) |
| 11738 | sym_value = sym->st_value; | |
| 11739 | else | |
| 11740 | { | |
| 11741 | if (h->root.type != bfd_link_hash_defined | |
| 11742 | && h->root.type != bfd_link_hash_defweak) | |
| 11743 | abort (); | |
| 11744 | sym_value = h->root.u.def.value; | |
| 11745 | } | |
| 11746 | sym_value += rel->r_addend; | |
| 4c52953f | 11747 | |
| 70cc837d AM |
11748 | /* If this branch reloc uses an opd sym, find the code section. */ |
| 11749 | opd = get_opd_info (sym_sec); | |
| 11750 | if (opd != NULL) | |
| 11751 | { | |
| 11752 | if (h == NULL && opd->adjust != NULL) | |
| 11753 | { | |
| 11754 | long adjust; | |
| 4c52953f | 11755 | |
| 92a9c616 | 11756 | adjust = opd->adjust[OPD_NDX (sym_value)]; |
| 70cc837d AM |
11757 | if (adjust == -1) |
| 11758 | /* Assume deleted functions won't ever be called. */ | |
| 11759 | continue; | |
| 11760 | sym_value += adjust; | |
| 11761 | } | |
| 4c52953f | 11762 | |
| aef36ac1 AM |
11763 | dest = opd_entry_value (sym_sec, sym_value, |
| 11764 | &sym_sec, NULL, FALSE); | |
| 70cc837d AM |
11765 | if (dest == (bfd_vma) -1) |
| 11766 | continue; | |
| 11767 | } | |
| 11768 | else | |
| 11769 | dest = (sym_value | |
| 11770 | + sym_sec->output_offset | |
| 11771 | + sym_sec->output_section->vma); | |
| 4c52953f | 11772 | |
| 70cc837d AM |
11773 | /* Ignore branch to self. */ |
| 11774 | if (sym_sec == isec) | |
| 11775 | continue; | |
| 4c52953f | 11776 | |
| 70cc837d AM |
11777 | /* If the called function uses the toc, we need a stub. */ |
| 11778 | if (sym_sec->has_toc_reloc | |
| 11779 | || sym_sec->makes_toc_func_call) | |
| 4c52953f | 11780 | { |
| 70cc837d | 11781 | ret = 1; |
| 4c52953f AM |
11782 | break; |
| 11783 | } | |
| 70cc837d AM |
11784 | |
| 11785 | /* Assume any branch that needs a long branch stub might in fact | |
| 11786 | need a plt_branch stub. A plt_branch stub uses r2. */ | |
| 11787 | else if (dest - (isec->output_offset | |
| 11788 | + isec->output_section->vma | |
| 6911b7dc AM |
11789 | + rel->r_offset) + (1 << 25) |
| 11790 | >= (2u << 25) - PPC64_LOCAL_ENTRY_OFFSET (h | |
| 11791 | ? h->other | |
| 11792 | : sym->st_other)) | |
| 4c52953f | 11793 | { |
| 70cc837d AM |
11794 | ret = 1; |
| 11795 | break; | |
| 11796 | } | |
| 11797 | ||
| 11798 | /* If calling back to a section in the process of being | |
| 11799 | tested, we can't say for sure that no toc adjusting stubs | |
| 11800 | are needed, so don't return zero. */ | |
| 11801 | else if (sym_sec->call_check_in_progress) | |
| 11802 | ret = 2; | |
| 11803 | ||
| 11804 | /* Branches to another section that itself doesn't have any TOC | |
| 11805 | references are OK. Recursively call ourselves to check. */ | |
| 11806 | else if (!sym_sec->call_check_done) | |
| 11807 | { | |
| 11808 | int recur; | |
| 11809 | ||
| 11810 | /* Mark current section as indeterminate, so that other | |
| 11811 | sections that call back to current won't be marked as | |
| 11812 | known. */ | |
| 11813 | isec->call_check_in_progress = 1; | |
| 11814 | recur = toc_adjusting_stub_needed (info, sym_sec); | |
| 11815 | isec->call_check_in_progress = 0; | |
| 11816 | ||
| 4c52953f AM |
11817 | if (recur != 0) |
| 11818 | { | |
| 70cc837d AM |
11819 | ret = recur; |
| 11820 | if (recur != 2) | |
| 11821 | break; | |
| 4c52953f AM |
11822 | } |
| 11823 | } | |
| 4c52953f | 11824 | } |
| 70cc837d AM |
11825 | |
| 11826 | if (local_syms != NULL | |
| 11827 | && (elf_symtab_hdr (isec->owner).contents | |
| 11828 | != (unsigned char *) local_syms)) | |
| 11829 | free (local_syms); | |
| 11830 | if (elf_section_data (isec)->relocs != relstart) | |
| 11831 | free (relstart); | |
| 9b5ecbd0 AM |
11832 | } |
| 11833 | ||
| 70cc837d AM |
11834 | if ((ret & 1) == 0 |
| 11835 | && isec->map_head.s != NULL | |
| 11836 | && (strcmp (isec->output_section->name, ".init") == 0 | |
| 11837 | || strcmp (isec->output_section->name, ".fini") == 0)) | |
| 11838 | { | |
| 11839 | if (isec->map_head.s->has_toc_reloc | |
| 11840 | || isec->map_head.s->makes_toc_func_call) | |
| 11841 | ret = 1; | |
| 11842 | else if (!isec->map_head.s->call_check_done) | |
| 11843 | { | |
| 11844 | int recur; | |
| 11845 | isec->call_check_in_progress = 1; | |
| 11846 | recur = toc_adjusting_stub_needed (info, isec->map_head.s); | |
| 11847 | isec->call_check_in_progress = 0; | |
| 11848 | if (recur != 0) | |
| 11849 | ret = recur; | |
| 11850 | } | |
| 11851 | } | |
| 11852 | ||
| 11853 | if (ret == 1) | |
| 11854 | isec->makes_toc_func_call = 1; | |
| 4c52953f | 11855 | |
| 9b5ecbd0 AM |
11856 | return ret; |
| 11857 | } | |
| 11858 | ||
| 721956f4 AM |
11859 | /* The linker repeatedly calls this function for each input section, |
| 11860 | in the order that input sections are linked into output sections. | |
| 11861 | Build lists of input sections to determine groupings between which | |
| 11862 | we may insert linker stubs. */ | |
| 11863 | ||
| 9b5ecbd0 | 11864 | bfd_boolean |
| 4ce794b7 | 11865 | ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec) |
| 721956f4 AM |
11866 | { |
| 11867 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11868 | ||
| 4dfe6ac6 NC |
11869 | if (htab == NULL) |
| 11870 | return FALSE; | |
| 11871 | ||
| 734b6cf9 | 11872 | if ((isec->output_section->flags & SEC_CODE) != 0 |
| 6f20ed8a | 11873 | && isec->output_section->id < htab->sec_info_arr_size) |
| 721956f4 | 11874 | { |
| 3d6f9012 AM |
11875 | /* This happens to make the list in reverse order, |
| 11876 | which is what we want. */ | |
| 6f20ed8a AM |
11877 | htab->sec_info[isec->id].u.list |
| 11878 | = htab->sec_info[isec->output_section->id].u.list; | |
| 11879 | htab->sec_info[isec->output_section->id].u.list = isec; | |
| 721956f4 | 11880 | } |
| ad8e1ba5 | 11881 | |
| 4c52953f | 11882 | if (htab->multi_toc_needed) |
| 9b5ecbd0 | 11883 | { |
| 8b974ba3 AM |
11884 | /* Analyse sections that aren't already flagged as needing a |
| 11885 | valid toc pointer. Exclude .fixup for the linux kernel. | |
| 11886 | .fixup contains branches, but only back to the function that | |
| 11887 | hit an exception. */ | |
| 11888 | if (!(isec->has_toc_reloc | |
| 11889 | || (isec->flags & SEC_CODE) == 0 | |
| 11890 | || strcmp (isec->name, ".fixup") == 0 | |
| 11891 | || isec->call_check_done)) | |
| 11892 | { | |
| 11893 | if (toc_adjusting_stub_needed (info, isec) < 0) | |
| 6683a28d | 11894 | return FALSE; |
| 8b974ba3 AM |
11895 | } |
| 11896 | /* Make all sections use the TOC assigned for this object file. | |
| 11897 | This will be wrong for pasted sections; We fix that in | |
| 11898 | check_pasted_section(). */ | |
| 11899 | if (elf_gp (isec->owner) != 0) | |
| 11900 | htab->toc_curr = elf_gp (isec->owner); | |
| 11901 | } | |
| 11902 | ||
| 6f20ed8a | 11903 | htab->sec_info[isec->id].toc_off = htab->toc_curr; |
| 9b5ecbd0 | 11904 | return TRUE; |
| 721956f4 AM |
11905 | } |
| 11906 | ||
| 70cc837d AM |
11907 | /* Check that all .init and .fini sections use the same toc, if they |
| 11908 | have toc relocs. */ | |
| 11909 | ||
| 11910 | static bfd_boolean | |
| 11911 | check_pasted_section (struct bfd_link_info *info, const char *name) | |
| 11912 | { | |
| 11913 | asection *o = bfd_get_section_by_name (info->output_bfd, name); | |
| 11914 | ||
| 11915 | if (o != NULL) | |
| 11916 | { | |
| 11917 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 11918 | bfd_vma toc_off = 0; | |
| 11919 | asection *i; | |
| 11920 | ||
| 11921 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11922 | if (i->has_toc_reloc) | |
| 11923 | { | |
| 11924 | if (toc_off == 0) | |
| 6f20ed8a AM |
11925 | toc_off = htab->sec_info[i->id].toc_off; |
| 11926 | else if (toc_off != htab->sec_info[i->id].toc_off) | |
| 70cc837d AM |
11927 | return FALSE; |
| 11928 | } | |
| 6683a28d AM |
11929 | |
| 11930 | if (toc_off == 0) | |
| 11931 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 11932 | if (i->makes_toc_func_call) | |
| 11933 | { | |
| 6f20ed8a | 11934 | toc_off = htab->sec_info[i->id].toc_off; |
| 6683a28d AM |
11935 | break; |
| 11936 | } | |
| 11937 | ||
| 70cc837d AM |
11938 | /* Make sure the whole pasted function uses the same toc offset. */ |
| 11939 | if (toc_off != 0) | |
| 11940 | for (i = o->map_head.s; i != NULL; i = i->map_head.s) | |
| 6f20ed8a | 11941 | htab->sec_info[i->id].toc_off = toc_off; |
| 70cc837d AM |
11942 | } |
| 11943 | return TRUE; | |
| 11944 | } | |
| 11945 | ||
| 11946 | bfd_boolean | |
| 11947 | ppc64_elf_check_init_fini (struct bfd_link_info *info) | |
| 11948 | { | |
| 11949 | return (check_pasted_section (info, ".init") | |
| 11950 | & check_pasted_section (info, ".fini")); | |
| 11951 | } | |
| 11952 | ||
| 721956f4 AM |
11953 | /* See whether we can group stub sections together. Grouping stub |
| 11954 | sections may result in fewer stubs. More importantly, we need to | |
| 11955 | put all .init* and .fini* stubs at the beginning of the .init or | |
| 11956 | .fini output sections respectively, because glibc splits the | |
| 11957 | _init and _fini functions into multiple parts. Putting a stub in | |
| 11958 | the middle of a function is not a good idea. */ | |
| 11959 | ||
| 6f20ed8a AM |
11960 | static bfd_boolean |
| 11961 | group_sections (struct bfd_link_info *info, | |
| 4ce794b7 AM |
11962 | bfd_size_type stub_group_size, |
| 11963 | bfd_boolean stubs_always_before_branch) | |
| 721956f4 | 11964 | { |
| 6f20ed8a AM |
11965 | struct ppc_link_hash_table *htab; |
| 11966 | asection *osec; | |
| 7c8fe5c4 AM |
11967 | bfd_size_type stub14_group_size; |
| 11968 | bfd_boolean suppress_size_errors; | |
| 11969 | ||
| 6f20ed8a AM |
11970 | htab = ppc_hash_table (info); |
| 11971 | if (htab == NULL) | |
| 11972 | return FALSE; | |
| 11973 | ||
| 7c8fe5c4 | 11974 | suppress_size_errors = FALSE; |
| 0cfb0717 | 11975 | stub14_group_size = stub_group_size >> 10; |
| 7c8fe5c4 AM |
11976 | if (stub_group_size == 1) |
| 11977 | { | |
| 11978 | /* Default values. */ | |
| 11979 | if (stubs_always_before_branch) | |
| 11980 | { | |
| 11981 | stub_group_size = 0x1e00000; | |
| 11982 | stub14_group_size = 0x7800; | |
| 11983 | } | |
| 11984 | else | |
| 11985 | { | |
| 11986 | stub_group_size = 0x1c00000; | |
| 11987 | stub14_group_size = 0x7000; | |
| 11988 | } | |
| 11989 | suppress_size_errors = TRUE; | |
| 11990 | } | |
| 11991 | ||
| 6f20ed8a | 11992 | for (osec = info->output_bfd->sections; osec != NULL; osec = osec->next) |
| 721956f4 | 11993 | { |
| 6f20ed8a AM |
11994 | asection *tail; |
| 11995 | ||
| 11996 | if (osec->id >= htab->sec_info_arr_size) | |
| 11997 | continue; | |
| 11998 | ||
| 11999 | tail = htab->sec_info[osec->id].u.list; | |
| 734b6cf9 | 12000 | while (tail != NULL) |
| 721956f4 | 12001 | { |
| 734b6cf9 AM |
12002 | asection *curr; |
| 12003 | asection *prev; | |
| 12004 | bfd_size_type total; | |
| 12005 | bfd_boolean big_sec; | |
| 12006 | bfd_vma curr_toc; | |
| 6f20ed8a | 12007 | struct map_stub *group; |
| 734b6cf9 AM |
12008 | |
| 12009 | curr = tail; | |
| eea6121a | 12010 | total = tail->size; |
| 6bee8834 AM |
12011 | big_sec = total > (ppc64_elf_section_data (tail) != NULL |
| 12012 | && ppc64_elf_section_data (tail)->has_14bit_branch | |
| 7c8fe5c4 AM |
12013 | ? stub14_group_size : stub_group_size); |
| 12014 | if (big_sec && !suppress_size_errors) | |
| 5c3dead3 AM |
12015 | (*_bfd_error_handler) (_("%B section %A exceeds stub group size"), |
| 12016 | tail->owner, tail); | |
| 6f20ed8a | 12017 | curr_toc = htab->sec_info[tail->id].toc_off; |
| 734b6cf9 | 12018 | |
| 6f20ed8a | 12019 | while ((prev = htab->sec_info[curr->id].u.list) != NULL |
| 734b6cf9 | 12020 | && ((total += curr->output_offset - prev->output_offset) |
| 6bee8834 AM |
12021 | < (ppc64_elf_section_data (prev) != NULL |
| 12022 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 12023 | ? stub14_group_size : stub_group_size)) |
| 6f20ed8a | 12024 | && htab->sec_info[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
12025 | curr = prev; |
| 12026 | ||
| 12027 | /* OK, the size from the start of CURR to the end is less | |
| 12028 | than stub_group_size and thus can be handled by one stub | |
| 12029 | section. (or the tail section is itself larger than | |
| 12030 | stub_group_size, in which case we may be toast.) We | |
| 12031 | should really be keeping track of the total size of stubs | |
| 12032 | added here, as stubs contribute to the final output | |
| 12033 | section size. That's a little tricky, and this way will | |
| 12034 | only break if stubs added make the total size more than | |
| 12035 | 2^25, ie. for the default stub_group_size, if stubs total | |
| 12036 | more than 2097152 bytes, or nearly 75000 plt call stubs. */ | |
| 6f20ed8a AM |
12037 | group = bfd_alloc (curr->owner, sizeof (*group)); |
| 12038 | if (group == NULL) | |
| 12039 | return FALSE; | |
| 12040 | group->link_sec = curr; | |
| 12041 | group->stub_sec = NULL; | |
| a4b6fadd AM |
12042 | group->needs_save_res = 0; |
| 12043 | group->next = htab->group; | |
| 12044 | htab->group = group; | |
| 734b6cf9 | 12045 | do |
| 721956f4 | 12046 | { |
| 6f20ed8a | 12047 | prev = htab->sec_info[tail->id].u.list; |
| 734b6cf9 | 12048 | /* Set up this stub group. */ |
| 6f20ed8a | 12049 | htab->sec_info[tail->id].u.group = group; |
| 721956f4 | 12050 | } |
| 734b6cf9 AM |
12051 | while (tail != curr && (tail = prev) != NULL); |
| 12052 | ||
| 12053 | /* But wait, there's more! Input sections up to stub_group_size | |
| 12054 | bytes before the stub section can be handled by it too. | |
| 12055 | Don't do this if we have a really large section after the | |
| 12056 | stubs, as adding more stubs increases the chance that | |
| 12057 | branches may not reach into the stub section. */ | |
| 12058 | if (!stubs_always_before_branch && !big_sec) | |
| 12059 | { | |
| 12060 | total = 0; | |
| 12061 | while (prev != NULL | |
| 12062 | && ((total += tail->output_offset - prev->output_offset) | |
| 6bee8834 AM |
12063 | < (ppc64_elf_section_data (prev) != NULL |
| 12064 | && ppc64_elf_section_data (prev)->has_14bit_branch | |
| 7c8fe5c4 | 12065 | ? stub14_group_size : stub_group_size)) |
| 6f20ed8a | 12066 | && htab->sec_info[prev->id].toc_off == curr_toc) |
| 734b6cf9 AM |
12067 | { |
| 12068 | tail = prev; | |
| 6f20ed8a AM |
12069 | prev = htab->sec_info[tail->id].u.list; |
| 12070 | htab->sec_info[tail->id].u.group = group; | |
| 734b6cf9 AM |
12071 | } |
| 12072 | } | |
| 12073 | tail = prev; | |
| 721956f4 AM |
12074 | } |
| 12075 | } | |
| 6f20ed8a | 12076 | return TRUE; |
| 721956f4 AM |
12077 | } |
| 12078 | ||
| 58d180e8 AM |
12079 | static const unsigned char glink_eh_frame_cie[] = |
| 12080 | { | |
| 12081 | 0, 0, 0, 16, /* length. */ | |
| 12082 | 0, 0, 0, 0, /* id. */ | |
| 12083 | 1, /* CIE version. */ | |
| 12084 | 'z', 'R', 0, /* Augmentation string. */ | |
| 12085 | 4, /* Code alignment. */ | |
| 12086 | 0x78, /* Data alignment. */ | |
| 12087 | 65, /* RA reg. */ | |
| 12088 | 1, /* Augmentation size. */ | |
| 12089 | DW_EH_PE_pcrel | DW_EH_PE_sdata4, /* FDE encoding. */ | |
| da44f4e5 AM |
12090 | DW_CFA_def_cfa, 1, 0, /* def_cfa: r1 offset 0. */ |
| 12091 | 0, 0, 0, 0 | |
| 58d180e8 AM |
12092 | }; |
| 12093 | ||
| d969d15f AM |
12094 | /* Stripping output sections is normally done before dynamic section |
| 12095 | symbols have been allocated. This function is called later, and | |
| 12096 | handles cases like htab->brlt which is mapped to its own output | |
| 12097 | section. */ | |
| 12098 | ||
| 12099 | static void | |
| 12100 | maybe_strip_output (struct bfd_link_info *info, asection *isec) | |
| 12101 | { | |
| 12102 | if (isec->size == 0 | |
| 12103 | && isec->output_section->size == 0 | |
| 53d8967a | 12104 | && !(isec->output_section->flags & SEC_KEEP) |
| d969d15f AM |
12105 | && !bfd_section_removed_from_list (info->output_bfd, |
| 12106 | isec->output_section) | |
| 12107 | && elf_section_data (isec->output_section)->dynindx == 0) | |
| 12108 | { | |
| 12109 | isec->output_section->flags |= SEC_EXCLUDE; | |
| 12110 | bfd_section_list_remove (info->output_bfd, isec->output_section); | |
| 12111 | info->output_bfd->section_count--; | |
| 12112 | } | |
| 12113 | } | |
| 12114 | ||
| 721956f4 AM |
12115 | /* Determine and set the size of the stub section for a final link. |
| 12116 | ||
| 12117 | The basic idea here is to examine all the relocations looking for | |
| 12118 | PC-relative calls to a target that is unreachable with a "bl" | |
| 12119 | instruction. */ | |
| 12120 | ||
| b34976b6 | 12121 | bfd_boolean |
| e7d1c40c | 12122 | ppc64_elf_size_stubs (struct bfd_link_info *info) |
| 721956f4 AM |
12123 | { |
| 12124 | bfd_size_type stub_group_size; | |
| b34976b6 | 12125 | bfd_boolean stubs_always_before_branch; |
| 721956f4 AM |
12126 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 12127 | ||
| 4dfe6ac6 NC |
12128 | if (htab == NULL) |
| 12129 | return FALSE; | |
| 12130 | ||
| 0e1862bb | 12131 | if (htab->params->plt_thread_safe == -1 && !bfd_link_executable (info)) |
| e7d1c40c | 12132 | htab->params->plt_thread_safe = 1; |
| b9e5796b | 12133 | if (!htab->opd_abi) |
| e7d1c40c AM |
12134 | htab->params->plt_thread_safe = 0; |
| 12135 | else if (htab->params->plt_thread_safe == -1) | |
| 794e51c0 | 12136 | { |
| e2458743 | 12137 | static const char *const thread_starter[] = |
| 794e51c0 AM |
12138 | { |
| 12139 | "pthread_create", | |
| 12140 | /* libstdc++ */ | |
| 12141 | "_ZNSt6thread15_M_start_threadESt10shared_ptrINS_10_Impl_baseEE", | |
| 12142 | /* librt */ | |
| 12143 | "aio_init", "aio_read", "aio_write", "aio_fsync", "lio_listio", | |
| 12144 | "mq_notify", "create_timer", | |
| 12145 | /* libanl */ | |
| 12146 | "getaddrinfo_a", | |
| 12147 | /* libgomp */ | |
| 2300b5a1 | 12148 | "GOMP_parallel", |
| 794e51c0 | 12149 | "GOMP_parallel_start", |
| 2300b5a1 | 12150 | "GOMP_parallel_loop_static", |
| 794e51c0 | 12151 | "GOMP_parallel_loop_static_start", |
| 2300b5a1 | 12152 | "GOMP_parallel_loop_dynamic", |
| 794e51c0 | 12153 | "GOMP_parallel_loop_dynamic_start", |
| 2300b5a1 | 12154 | "GOMP_parallel_loop_guided", |
| 794e51c0 | 12155 | "GOMP_parallel_loop_guided_start", |
| 2300b5a1 | 12156 | "GOMP_parallel_loop_runtime", |
| 794e51c0 | 12157 | "GOMP_parallel_loop_runtime_start", |
| 2300b5a1 | 12158 | "GOMP_parallel_sections", |
| 68ffbac6 | 12159 | "GOMP_parallel_sections_start", |
| f9dffbf0 AM |
12160 | /* libgo */ |
| 12161 | "__go_go", | |
| 794e51c0 AM |
12162 | }; |
| 12163 | unsigned i; | |
| 12164 | ||
| a4b6fadd | 12165 | for (i = 0; i < ARRAY_SIZE (thread_starter); i++) |
| 794e51c0 AM |
12166 | { |
| 12167 | struct elf_link_hash_entry *h; | |
| 12168 | h = elf_link_hash_lookup (&htab->elf, thread_starter[i], | |
| 12169 | FALSE, FALSE, TRUE); | |
| e7d1c40c AM |
12170 | htab->params->plt_thread_safe = h != NULL && h->ref_regular; |
| 12171 | if (htab->params->plt_thread_safe) | |
| 794e51c0 AM |
12172 | break; |
| 12173 | } | |
| 12174 | } | |
| e7d1c40c AM |
12175 | stubs_always_before_branch = htab->params->group_size < 0; |
| 12176 | if (htab->params->group_size < 0) | |
| 12177 | stub_group_size = -htab->params->group_size; | |
| 721956f4 | 12178 | else |
| e7d1c40c | 12179 | stub_group_size = htab->params->group_size; |
| 721956f4 | 12180 | |
| 6f20ed8a AM |
12181 | if (!group_sections (info, stub_group_size, stubs_always_before_branch)) |
| 12182 | return FALSE; | |
| 721956f4 | 12183 | |
| 721956f4 AM |
12184 | while (1) |
| 12185 | { | |
| 12186 | bfd *input_bfd; | |
| 12187 | unsigned int bfd_indx; | |
| a4b6fadd | 12188 | struct map_stub *group; |
| 721956f4 | 12189 | asection *stub_sec; |
| 721956f4 AM |
12190 | |
| 12191 | htab->stub_iteration += 1; | |
| 721956f4 AM |
12192 | |
| 12193 | for (input_bfd = info->input_bfds, bfd_indx = 0; | |
| 12194 | input_bfd != NULL; | |
| c72f2fb2 | 12195 | input_bfd = input_bfd->link.next, bfd_indx++) |
| 721956f4 AM |
12196 | { |
| 12197 | Elf_Internal_Shdr *symtab_hdr; | |
| 12198 | asection *section; | |
| 6cdc0ccc | 12199 | Elf_Internal_Sym *local_syms = NULL; |
| 721956f4 | 12200 | |
| 0c8d6e5c | 12201 | if (!is_ppc64_elf (input_bfd)) |
| 67f93c31 AM |
12202 | continue; |
| 12203 | ||
| 721956f4 | 12204 | /* We'll need the symbol table in a second. */ |
| 0ffa91dd | 12205 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 721956f4 AM |
12206 | if (symtab_hdr->sh_info == 0) |
| 12207 | continue; | |
| 12208 | ||
| 721956f4 AM |
12209 | /* Walk over each section attached to the input bfd. */ |
| 12210 | for (section = input_bfd->sections; | |
| 12211 | section != NULL; | |
| 12212 | section = section->next) | |
| 12213 | { | |
| 721956f4 | 12214 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; |
| 721956f4 AM |
12215 | |
| 12216 | /* If there aren't any relocs, then there's nothing more | |
| 12217 | to do. */ | |
| 12218 | if ((section->flags & SEC_RELOC) == 0 | |
| 12c0f757 AM |
12219 | || (section->flags & SEC_ALLOC) == 0 |
| 12220 | || (section->flags & SEC_LOAD) == 0 | |
| 12221 | || (section->flags & SEC_CODE) == 0 | |
| 721956f4 AM |
12222 | || section->reloc_count == 0) |
| 12223 | continue; | |
| 12224 | ||
| 12225 | /* If this section is a link-once section that will be | |
| 12226 | discarded, then don't create any stubs. */ | |
| 12227 | if (section->output_section == NULL | |
| 927be08e | 12228 | || section->output_section->owner != info->output_bfd) |
| 721956f4 AM |
12229 | continue; |
| 12230 | ||
| 1e2f5b6e AM |
12231 | /* Get the relocs. */ |
| 12232 | internal_relocs | |
| 4ce794b7 | 12233 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, NULL, |
| 45d6a902 | 12234 | info->keep_memory); |
| 721956f4 | 12235 | if (internal_relocs == NULL) |
| 1e2f5b6e | 12236 | goto error_ret_free_local; |
| 721956f4 AM |
12237 | |
| 12238 | /* Now examine each relocation. */ | |
| 12239 | irela = internal_relocs; | |
| 12240 | irelaend = irela + section->reloc_count; | |
| 12241 | for (; irela < irelaend; irela++) | |
| 12242 | { | |
| 4ce794b7 AM |
12243 | enum elf_ppc64_reloc_type r_type; |
| 12244 | unsigned int r_indx; | |
| 721956f4 AM |
12245 | enum ppc_stub_type stub_type; |
| 12246 | struct ppc_stub_hash_entry *stub_entry; | |
| 8387904d | 12247 | asection *sym_sec, *code_sec; |
| e054468f | 12248 | bfd_vma sym_value, code_value; |
| 721956f4 | 12249 | bfd_vma destination; |
| 6911b7dc | 12250 | unsigned long local_off; |
| 8843416a | 12251 | bfd_boolean ok_dest; |
| 721956f4 | 12252 | struct ppc_link_hash_entry *hash; |
| 8387904d | 12253 | struct ppc_link_hash_entry *fdh; |
| 411e1bfb AM |
12254 | struct elf_link_hash_entry *h; |
| 12255 | Elf_Internal_Sym *sym; | |
| 721956f4 AM |
12256 | char *stub_name; |
| 12257 | const asection *id_sec; | |
| 74f0fb50 | 12258 | struct _opd_sec_data *opd; |
| e054468f | 12259 | struct plt_entry *plt_ent; |
| 721956f4 AM |
12260 | |
| 12261 | r_type = ELF64_R_TYPE (irela->r_info); | |
| 12262 | r_indx = ELF64_R_SYM (irela->r_info); | |
| 12263 | ||
| 4ce794b7 | 12264 | if (r_type >= R_PPC64_max) |
| 721956f4 AM |
12265 | { |
| 12266 | bfd_set_error (bfd_error_bad_value); | |
| 6cdc0ccc | 12267 | goto error_ret_free_internal; |
| 721956f4 AM |
12268 | } |
| 12269 | ||
| 12270 | /* Only look for stubs on branch instructions. */ | |
| 4ce794b7 AM |
12271 | if (r_type != R_PPC64_REL24 |
| 12272 | && r_type != R_PPC64_REL14 | |
| 12273 | && r_type != R_PPC64_REL14_BRTAKEN | |
| 12274 | && r_type != R_PPC64_REL14_BRNTAKEN) | |
| 721956f4 AM |
12275 | continue; |
| 12276 | ||
| 12277 | /* Now determine the call target, its name, value, | |
| 12278 | section. */ | |
| 411e1bfb AM |
12279 | if (!get_sym_h (&h, &sym, &sym_sec, NULL, &local_syms, |
| 12280 | r_indx, input_bfd)) | |
| 12281 | goto error_ret_free_internal; | |
| 12282 | hash = (struct ppc_link_hash_entry *) h; | |
| 12283 | ||
| 8843416a | 12284 | ok_dest = FALSE; |
| 8387904d | 12285 | fdh = NULL; |
| 7fe2b9a6 | 12286 | sym_value = 0; |
| 411e1bfb | 12287 | if (hash == NULL) |
| 721956f4 | 12288 | { |
| 411e1bfb | 12289 | sym_value = sym->st_value; |
| c27b8c2a AM |
12290 | if (sym_sec != NULL |
| 12291 | && sym_sec->output_section != NULL) | |
| 12292 | ok_dest = TRUE; | |
| 721956f4 | 12293 | } |
| 7fe2b9a6 AM |
12294 | else if (hash->elf.root.type == bfd_link_hash_defined |
| 12295 | || hash->elf.root.type == bfd_link_hash_defweak) | |
| 12296 | { | |
| 12297 | sym_value = hash->elf.root.u.def.value; | |
| 12298 | if (sym_sec->output_section != NULL) | |
| 12299 | ok_dest = TRUE; | |
| 12300 | } | |
| 12301 | else if (hash->elf.root.type == bfd_link_hash_undefweak | |
| 12302 | || hash->elf.root.type == bfd_link_hash_undefined) | |
| 721956f4 | 12303 | { |
| 99877b66 | 12304 | /* Recognise an old ABI func code entry sym, and |
| 7fe2b9a6 AM |
12305 | use the func descriptor sym instead if it is |
| 12306 | defined. */ | |
| ceb1f1ef | 12307 | if (hash->elf.root.root.string[0] == '.' |
| b31867b6 | 12308 | && (fdh = lookup_fdh (hash, htab)) != NULL) |
| 8387904d | 12309 | { |
| 8387904d AM |
12310 | if (fdh->elf.root.type == bfd_link_hash_defined |
| 12311 | || fdh->elf.root.type == bfd_link_hash_defweak) | |
| 12312 | { | |
| 12313 | sym_sec = fdh->elf.root.u.def.section; | |
| 12314 | sym_value = fdh->elf.root.u.def.value; | |
| 12315 | if (sym_sec->output_section != NULL) | |
| 12316 | ok_dest = TRUE; | |
| 12317 | } | |
| 99877b66 AM |
12318 | else |
| 12319 | fdh = NULL; | |
| 8387904d | 12320 | } |
| 7fe2b9a6 AM |
12321 | } |
| 12322 | else | |
| 12323 | { | |
| 12324 | bfd_set_error (bfd_error_bad_value); | |
| 12325 | goto error_ret_free_internal; | |
| 721956f4 AM |
12326 | } |
| 12327 | ||
| 8843416a | 12328 | destination = 0; |
| 6911b7dc | 12329 | local_off = 0; |
| 8843416a AM |
12330 | if (ok_dest) |
| 12331 | { | |
| 12332 | sym_value += irela->r_addend; | |
| 12333 | destination = (sym_value | |
| 12334 | + sym_sec->output_offset | |
| 12335 | + sym_sec->output_section->vma); | |
| 6911b7dc AM |
12336 | local_off = PPC64_LOCAL_ENTRY_OFFSET (hash |
| 12337 | ? hash->elf.other | |
| 12338 | : sym->st_other); | |
| 8843416a AM |
12339 | } |
| 12340 | ||
| 8387904d | 12341 | code_sec = sym_sec; |
| e054468f | 12342 | code_value = sym_value; |
| 74f0fb50 AM |
12343 | opd = get_opd_info (sym_sec); |
| 12344 | if (opd != NULL) | |
| 8387904d AM |
12345 | { |
| 12346 | bfd_vma dest; | |
| 12347 | ||
| 74f0fb50 | 12348 | if (hash == NULL && opd->adjust != NULL) |
| 8387904d | 12349 | { |
| 51aecdc5 | 12350 | long adjust = opd->adjust[OPD_NDX (sym_value)]; |
| 8387904d AM |
12351 | if (adjust == -1) |
| 12352 | continue; | |
| e054468f | 12353 | code_value += adjust; |
| 8387904d AM |
12354 | sym_value += adjust; |
| 12355 | } | |
| 12356 | dest = opd_entry_value (sym_sec, sym_value, | |
| aef36ac1 | 12357 | &code_sec, &code_value, FALSE); |
| 8387904d AM |
12358 | if (dest != (bfd_vma) -1) |
| 12359 | { | |
| 12360 | destination = dest; | |
| 12361 | if (fdh != NULL) | |
| 12362 | { | |
| 12363 | /* Fixup old ABI sym to point at code | |
| 12364 | entry. */ | |
| 99877b66 | 12365 | hash->elf.root.type = bfd_link_hash_defweak; |
| 8387904d | 12366 | hash->elf.root.u.def.section = code_sec; |
| e054468f | 12367 | hash->elf.root.u.def.value = code_value; |
| 8387904d AM |
12368 | } |
| 12369 | } | |
| 12370 | } | |
| 12371 | ||
| 721956f4 | 12372 | /* Determine what (if any) linker stub is needed. */ |
| e054468f | 12373 | plt_ent = NULL; |
| 721956f4 | 12374 | stub_type = ppc_type_of_stub (section, irela, &hash, |
| 6911b7dc AM |
12375 | &plt_ent, destination, |
| 12376 | local_off); | |
| ad8e1ba5 AM |
12377 | |
| 12378 | if (stub_type != ppc_stub_plt_call) | |
| 12379 | { | |
| 12380 | /* Check whether we need a TOC adjusting stub. | |
| 12381 | Since the linker pastes together pieces from | |
| 12382 | different object files when creating the | |
| 12383 | _init and _fini functions, it may be that a | |
| 12384 | call to what looks like a local sym is in | |
| 12385 | fact a call needing a TOC adjustment. */ | |
| 8387904d AM |
12386 | if (code_sec != NULL |
| 12387 | && code_sec->output_section != NULL | |
| 6f20ed8a AM |
12388 | && (htab->sec_info[code_sec->id].toc_off |
| 12389 | != htab->sec_info[section->id].toc_off) | |
| 4c52953f AM |
12390 | && (code_sec->has_toc_reloc |
| 12391 | || code_sec->makes_toc_func_call)) | |
| ad8e1ba5 AM |
12392 | stub_type = ppc_stub_long_branch_r2off; |
| 12393 | } | |
| 12394 | ||
| 721956f4 AM |
12395 | if (stub_type == ppc_stub_none) |
| 12396 | continue; | |
| 12397 | ||
| 411e1bfb AM |
12398 | /* __tls_get_addr calls might be eliminated. */ |
| 12399 | if (stub_type != ppc_stub_plt_call | |
| 12400 | && hash != NULL | |
| 8387904d AM |
12401 | && (hash == htab->tls_get_addr |
| 12402 | || hash == htab->tls_get_addr_fd) | |
| 411e1bfb AM |
12403 | && section->has_tls_reloc |
| 12404 | && irela != internal_relocs) | |
| 12405 | { | |
| 12406 | /* Get tls info. */ | |
| f961d9dd | 12407 | unsigned char *tls_mask; |
| 411e1bfb | 12408 | |
| 3a71aa26 | 12409 | if (!get_tls_mask (&tls_mask, NULL, NULL, &local_syms, |
| 411e1bfb AM |
12410 | irela - 1, input_bfd)) |
| 12411 | goto error_ret_free_internal; | |
| e7b938ca | 12412 | if (*tls_mask != 0) |
| 411e1bfb AM |
12413 | continue; |
| 12414 | } | |
| 12415 | ||
| 3b421ab3 AM |
12416 | if (stub_type == ppc_stub_plt_call |
| 12417 | && irela + 1 < irelaend | |
| 12418 | && irela[1].r_offset == irela->r_offset + 4 | |
| 794e51c0 AM |
12419 | && ELF64_R_TYPE (irela[1].r_info) == R_PPC64_TOCSAVE) |
| 12420 | { | |
| 12421 | if (!tocsave_find (htab, INSERT, | |
| 12422 | &local_syms, irela + 1, input_bfd)) | |
| 12423 | goto error_ret_free_internal; | |
| 12424 | } | |
| 12425 | else if (stub_type == ppc_stub_plt_call) | |
| 12426 | stub_type = ppc_stub_plt_call_r2save; | |
| 3b421ab3 | 12427 | |
| 721956f4 | 12428 | /* Support for grouping stub sections. */ |
| 6f20ed8a | 12429 | id_sec = htab->sec_info[section->id].u.group->link_sec; |
| 721956f4 AM |
12430 | |
| 12431 | /* Get the name of this stub. */ | |
| 12432 | stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela); | |
| 12433 | if (!stub_name) | |
| 12434 | goto error_ret_free_internal; | |
| 12435 | ||
| 12436 | stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, | |
| b34976b6 | 12437 | stub_name, FALSE, FALSE); |
| 721956f4 AM |
12438 | if (stub_entry != NULL) |
| 12439 | { | |
| 12440 | /* The proper stub has already been created. */ | |
| 12441 | free (stub_name); | |
| 794e51c0 AM |
12442 | if (stub_type == ppc_stub_plt_call_r2save) |
| 12443 | stub_entry->stub_type = stub_type; | |
| 721956f4 AM |
12444 | continue; |
| 12445 | } | |
| 12446 | ||
| 25f53a85 | 12447 | stub_entry = ppc_add_stub (stub_name, section, info); |
| 721956f4 AM |
12448 | if (stub_entry == NULL) |
| 12449 | { | |
| 12450 | free (stub_name); | |
| 6cdc0ccc AM |
12451 | error_ret_free_internal: |
| 12452 | if (elf_section_data (section)->relocs == NULL) | |
| 12453 | free (internal_relocs); | |
| 12454 | error_ret_free_local: | |
| 12455 | if (local_syms != NULL | |
| 12456 | && (symtab_hdr->contents | |
| 12457 | != (unsigned char *) local_syms)) | |
| 12458 | free (local_syms); | |
| b34976b6 | 12459 | return FALSE; |
| 721956f4 AM |
12460 | } |
| 12461 | ||
| ad8e1ba5 | 12462 | stub_entry->stub_type = stub_type; |
| 794e51c0 AM |
12463 | if (stub_type != ppc_stub_plt_call |
| 12464 | && stub_type != ppc_stub_plt_call_r2save) | |
| e054468f AM |
12465 | { |
| 12466 | stub_entry->target_value = code_value; | |
| 12467 | stub_entry->target_section = code_sec; | |
| 12468 | } | |
| 12469 | else | |
| 12470 | { | |
| 12471 | stub_entry->target_value = sym_value; | |
| 12472 | stub_entry->target_section = sym_sec; | |
| 12473 | } | |
| 721956f4 | 12474 | stub_entry->h = hash; |
| e054468f | 12475 | stub_entry->plt_ent = plt_ent; |
| 6911b7dc | 12476 | stub_entry->other = hash ? hash->elf.other : sym->st_other; |
| ee75fd95 AM |
12477 | |
| 12478 | if (stub_entry->h != NULL) | |
| 12479 | htab->stub_globals += 1; | |
| 721956f4 AM |
12480 | } |
| 12481 | ||
| 12482 | /* We're done with the internal relocs, free them. */ | |
| 6cdc0ccc | 12483 | if (elf_section_data (section)->relocs != internal_relocs) |
| 1e2f5b6e | 12484 | free (internal_relocs); |
| 721956f4 | 12485 | } |
| 6cdc0ccc AM |
12486 | |
| 12487 | if (local_syms != NULL | |
| 12488 | && symtab_hdr->contents != (unsigned char *) local_syms) | |
| 12489 | { | |
| 12490 | if (!info->keep_memory) | |
| 12491 | free (local_syms); | |
| 12492 | else | |
| 12493 | symtab_hdr->contents = (unsigned char *) local_syms; | |
| 12494 | } | |
| 721956f4 AM |
12495 | } |
| 12496 | ||
| 5c3dead3 | 12497 | /* We may have added some stubs. Find out the new size of the |
| 721956f4 | 12498 | stub sections. */ |
| e7d1c40c | 12499 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12500 | stub_sec != NULL; |
| 12501 | stub_sec = stub_sec->next) | |
| e717da7e | 12502 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| ee75fd95 | 12503 | { |
| 5c3dead3 | 12504 | stub_sec->rawsize = stub_sec->size; |
| ee75fd95 AM |
12505 | stub_sec->size = 0; |
| 12506 | stub_sec->reloc_count = 0; | |
| 84f5d08e | 12507 | stub_sec->flags &= ~SEC_RELOC; |
| ee75fd95 | 12508 | } |
| eea6121a AM |
12509 | |
| 12510 | htab->brlt->size = 0; | |
| 84f5d08e AM |
12511 | htab->brlt->reloc_count = 0; |
| 12512 | htab->brlt->flags &= ~SEC_RELOC; | |
| ee75fd95 | 12513 | if (htab->relbrlt != NULL) |
| eea6121a | 12514 | htab->relbrlt->size = 0; |
| 721956f4 | 12515 | |
| 63bc6f6c | 12516 | bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, info); |
| 721956f4 | 12517 | |
| a4b6fadd AM |
12518 | for (group = htab->group; group != NULL; group = group->next) |
| 12519 | if (group->needs_save_res) | |
| 12520 | group->stub_sec->size += htab->sfpr->size; | |
| 12521 | ||
| 176a0d42 AM |
12522 | if (info->emitrelocations |
| 12523 | && htab->glink != NULL && htab->glink->size != 0) | |
| 12524 | { | |
| 12525 | htab->glink->reloc_count = 1; | |
| 12526 | htab->glink->flags |= SEC_RELOC; | |
| 12527 | } | |
| 12528 | ||
| 58d180e8 AM |
12529 | if (htab->glink_eh_frame != NULL |
| 12530 | && !bfd_is_abs_section (htab->glink_eh_frame->output_section) | |
| 9a2a56cc | 12531 | && htab->glink_eh_frame->output_section->size != 0) |
| 58d180e8 | 12532 | { |
| 4bbe044a | 12533 | size_t size = 0, align; |
| 58d180e8 | 12534 | |
| e7d1c40c | 12535 | for (stub_sec = htab->params->stub_bfd->sections; |
| 58d180e8 AM |
12536 | stub_sec != NULL; |
| 12537 | stub_sec = stub_sec->next) | |
| 12538 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| da44f4e5 | 12539 | size += 24; |
| 58d180e8 AM |
12540 | if (htab->glink != NULL && htab->glink->size != 0) |
| 12541 | size += 24; | |
| 12542 | if (size != 0) | |
| 12543 | size += sizeof (glink_eh_frame_cie); | |
| 4bbe044a AM |
12544 | align = 1; |
| 12545 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12546 | align -= 1; | |
| 12547 | size = (size + align) & ~align; | |
| 58d180e8 AM |
12548 | htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; |
| 12549 | htab->glink_eh_frame->size = size; | |
| 12550 | } | |
| 12551 | ||
| e7d1c40c AM |
12552 | if (htab->params->plt_stub_align != 0) |
| 12553 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
12554 | stub_sec != NULL; |
| 12555 | stub_sec = stub_sec->next) | |
| 12556 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
12557 | stub_sec->size = ((stub_sec->size |
| 12558 | + (1 << htab->params->plt_stub_align) - 1) | |
| 29f628db | 12559 | & -(1 << htab->params->plt_stub_align)); |
| 794e51c0 | 12560 | |
| e7d1c40c | 12561 | for (stub_sec = htab->params->stub_bfd->sections; |
| 5c3dead3 AM |
12562 | stub_sec != NULL; |
| 12563 | stub_sec = stub_sec->next) | |
| 12564 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 | |
| 12565 | && stub_sec->rawsize != stub_sec->size) | |
| 12566 | break; | |
| 12567 | ||
| 12568 | /* Exit from this loop when no stubs have been added, and no stubs | |
| 12569 | have changed size. */ | |
| 58d180e8 AM |
12570 | if (stub_sec == NULL |
| 12571 | && (htab->glink_eh_frame == NULL | |
| 12572 | || htab->glink_eh_frame->rawsize == htab->glink_eh_frame->size)) | |
| 5c3dead3 AM |
12573 | break; |
| 12574 | ||
| 721956f4 | 12575 | /* Ask the linker to do its stuff. */ |
| e7d1c40c | 12576 | (*htab->params->layout_sections_again) (); |
| 721956f4 AM |
12577 | } |
| 12578 | ||
| da44f4e5 AM |
12579 | if (htab->glink_eh_frame != NULL |
| 12580 | && htab->glink_eh_frame->size != 0) | |
| 12581 | { | |
| 12582 | bfd_vma val; | |
| 12583 | bfd_byte *p, *last_fde; | |
| 12584 | size_t last_fde_len, size, align, pad; | |
| 12585 | asection *stub_sec; | |
| 12586 | ||
| 12587 | p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); | |
| 12588 | if (p == NULL) | |
| 12589 | return FALSE; | |
| 12590 | htab->glink_eh_frame->contents = p; | |
| 12591 | last_fde = p; | |
| 12592 | ||
| 12593 | memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); | |
| 12594 | /* CIE length (rewrite in case little-endian). */ | |
| 12595 | last_fde_len = sizeof (glink_eh_frame_cie) - 4; | |
| 12596 | bfd_put_32 (htab->elf.dynobj, last_fde_len, p); | |
| 12597 | p += sizeof (glink_eh_frame_cie); | |
| 12598 | ||
| 12599 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 12600 | stub_sec != NULL; | |
| 12601 | stub_sec = stub_sec->next) | |
| 12602 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 12603 | { | |
| 12604 | last_fde = p; | |
| 12605 | last_fde_len = 20; | |
| 12606 | /* FDE length. */ | |
| 12607 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
| 12608 | p += 4; | |
| 12609 | /* CIE pointer. */ | |
| 12610 | val = p - htab->glink_eh_frame->contents; | |
| 12611 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12612 | p += 4; | |
| 12613 | /* Offset to stub section, written later. */ | |
| 12614 | p += 4; | |
| 12615 | /* stub section size. */ | |
| 12616 | bfd_put_32 (htab->elf.dynobj, stub_sec->size, p); | |
| 12617 | p += 4; | |
| 12618 | /* Augmentation. */ | |
| 12619 | p += 1; | |
| 12620 | /* Pad. */ | |
| 12621 | p += 7; | |
| 12622 | } | |
| 12623 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 12624 | { | |
| 12625 | last_fde = p; | |
| 12626 | last_fde_len = 20; | |
| 12627 | /* FDE length. */ | |
| 12628 | bfd_put_32 (htab->elf.dynobj, 20, p); | |
| 12629 | p += 4; | |
| 12630 | /* CIE pointer. */ | |
| 12631 | val = p - htab->glink_eh_frame->contents; | |
| 12632 | bfd_put_32 (htab->elf.dynobj, val, p); | |
| 12633 | p += 4; | |
| 12634 | /* Offset to .glink, written later. */ | |
| 12635 | p += 4; | |
| 12636 | /* .glink size. */ | |
| 12637 | bfd_put_32 (htab->elf.dynobj, htab->glink->size - 8, p); | |
| 12638 | p += 4; | |
| 12639 | /* Augmentation. */ | |
| 12640 | p += 1; | |
| 12641 | ||
| 12642 | *p++ = DW_CFA_advance_loc + 1; | |
| 12643 | *p++ = DW_CFA_register; | |
| 12644 | *p++ = 65; | |
| 9f08fa5c | 12645 | *p++ = htab->opd_abi ? 12 : 0; |
| da44f4e5 AM |
12646 | *p++ = DW_CFA_advance_loc + 4; |
| 12647 | *p++ = DW_CFA_restore_extended; | |
| 12648 | *p++ = 65; | |
| 12649 | } | |
| 12650 | /* Subsume any padding into the last FDE if user .eh_frame | |
| 12651 | sections are aligned more than glink_eh_frame. Otherwise any | |
| 12652 | zero padding will be seen as a terminator. */ | |
| 12653 | size = p - htab->glink_eh_frame->contents; | |
| 12654 | align = 1; | |
| 12655 | align <<= htab->glink_eh_frame->output_section->alignment_power; | |
| 12656 | align -= 1; | |
| 12657 | pad = ((size + align) & ~align) - size; | |
| 12658 | htab->glink_eh_frame->size = size + pad; | |
| 12659 | bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde); | |
| 12660 | } | |
| 12661 | ||
| d969d15f AM |
12662 | maybe_strip_output (info, htab->brlt); |
| 12663 | if (htab->glink_eh_frame != NULL) | |
| 12664 | maybe_strip_output (info, htab->glink_eh_frame); | |
| 721956f4 | 12665 | |
| b34976b6 | 12666 | return TRUE; |
| 721956f4 AM |
12667 | } |
| 12668 | ||
| 12669 | /* Called after we have determined section placement. If sections | |
| 805fc799 | 12670 | move, we'll be called again. Provide a value for TOCstart. */ |
| 721956f4 | 12671 | |
| 805fc799 | 12672 | bfd_vma |
| 1c865ab2 | 12673 | ppc64_elf_set_toc (struct bfd_link_info *info, bfd *obfd) |
| 721956f4 | 12674 | { |
| 805fc799 | 12675 | asection *s; |
| a27e685f | 12676 | bfd_vma TOCstart, adjust; |
| 721956f4 | 12677 | |
| 43417696 AM |
12678 | if (info != NULL) |
| 12679 | { | |
| 12680 | struct elf_link_hash_entry *h; | |
| 12681 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
| 12682 | ||
| 12683 | if (is_elf_hash_table (htab) | |
| 12684 | && htab->hgot != NULL) | |
| 12685 | h = htab->hgot; | |
| 12686 | else | |
| 12687 | { | |
| 12688 | h = elf_link_hash_lookup (htab, ".TOC.", FALSE, FALSE, TRUE); | |
| 12689 | if (is_elf_hash_table (htab)) | |
| 12690 | htab->hgot = h; | |
| 12691 | } | |
| 12692 | if (h != NULL | |
| 12693 | && h->root.type == bfd_link_hash_defined | |
| 12694 | && !h->root.linker_def | |
| 12695 | && (!is_elf_hash_table (htab) | |
| 12696 | || h->def_regular)) | |
| 12697 | { | |
| 12698 | TOCstart = (h->root.u.def.value - TOC_BASE_OFF | |
| 12699 | + h->root.u.def.section->output_offset | |
| 12700 | + h->root.u.def.section->output_section->vma); | |
| 12701 | _bfd_set_gp_value (obfd, TOCstart); | |
| 12702 | return TOCstart; | |
| 12703 | } | |
| 12704 | } | |
| 12705 | ||
| 805fc799 AM |
12706 | /* The TOC consists of sections .got, .toc, .tocbss, .plt in that |
| 12707 | order. The TOC starts where the first of these sections starts. */ | |
| 12708 | s = bfd_get_section_by_name (obfd, ".got"); | |
| e054468f | 12709 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12710 | s = bfd_get_section_by_name (obfd, ".toc"); |
| e054468f | 12711 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12712 | s = bfd_get_section_by_name (obfd, ".tocbss"); |
| e054468f | 12713 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 | 12714 | s = bfd_get_section_by_name (obfd, ".plt"); |
| e054468f | 12715 | if (s == NULL || (s->flags & SEC_EXCLUDE) != 0) |
| 805fc799 AM |
12716 | { |
| 12717 | /* This may happen for | |
| 12718 | o references to TOC base (SYM@toc / TOC[tc0]) without a | |
| 12719 | .toc directive | |
| 12720 | o bad linker script | |
| 12721 | o --gc-sections and empty TOC sections | |
| 12722 | ||
| 12723 | FIXME: Warn user? */ | |
| 12724 | ||
| 12725 | /* Look for a likely section. We probably won't even be | |
| 12726 | using TOCstart. */ | |
| 12727 | for (s = obfd->sections; s != NULL; s = s->next) | |
| e054468f AM |
12728 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY |
| 12729 | | SEC_EXCLUDE)) | |
| 805fc799 AM |
12730 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12731 | break; | |
| 721956f4 | 12732 | if (s == NULL) |
| 805fc799 | 12733 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12734 | if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_EXCLUDE)) |
| 805fc799 AM |
12735 | == (SEC_ALLOC | SEC_SMALL_DATA)) |
| 12736 | break; | |
| 721956f4 | 12737 | if (s == NULL) |
| 805fc799 | 12738 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f AM |
12739 | if ((s->flags & (SEC_ALLOC | SEC_READONLY | SEC_EXCLUDE)) |
| 12740 | == SEC_ALLOC) | |
| 805fc799 | 12741 | break; |
| 721956f4 | 12742 | if (s == NULL) |
| 805fc799 | 12743 | for (s = obfd->sections; s != NULL; s = s->next) |
| e054468f | 12744 | if ((s->flags & (SEC_ALLOC | SEC_EXCLUDE)) == SEC_ALLOC) |
| 805fc799 AM |
12745 | break; |
| 12746 | } | |
| 721956f4 | 12747 | |
| 805fc799 AM |
12748 | TOCstart = 0; |
| 12749 | if (s != NULL) | |
| 12750 | TOCstart = s->output_section->vma + s->output_offset; | |
| 721956f4 | 12751 | |
| a27e685f AM |
12752 | /* Force alignment. */ |
| 12753 | adjust = TOCstart & (TOC_BASE_ALIGN - 1); | |
| 12754 | TOCstart -= adjust; | |
| 1c865ab2 AM |
12755 | _bfd_set_gp_value (obfd, TOCstart); |
| 12756 | ||
| 810d4e75 | 12757 | if (info != NULL && s != NULL) |
| 1c865ab2 AM |
12758 | { |
| 12759 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 12760 | ||
| 810d4e75 AM |
12761 | if (htab != NULL) |
| 12762 | { | |
| 12763 | if (htab->elf.hgot != NULL) | |
| 12764 | { | |
| a27e685f | 12765 | htab->elf.hgot->root.u.def.value = TOC_BASE_OFF - adjust; |
| 810d4e75 AM |
12766 | htab->elf.hgot->root.u.def.section = s; |
| 12767 | } | |
| 12768 | } | |
| 12769 | else | |
| 1c865ab2 | 12770 | { |
| 810d4e75 AM |
12771 | struct bfd_link_hash_entry *bh = NULL; |
| 12772 | _bfd_generic_link_add_one_symbol (info, obfd, ".TOC.", BSF_GLOBAL, | |
| a27e685f AM |
12773 | s, TOC_BASE_OFF - adjust, |
| 12774 | NULL, FALSE, FALSE, &bh); | |
| 1c865ab2 AM |
12775 | } |
| 12776 | } | |
| 805fc799 | 12777 | return TOCstart; |
| 721956f4 AM |
12778 | } |
| 12779 | ||
| a345bc8d AM |
12780 | /* Called via elf_link_hash_traverse from ppc64_elf_build_stubs to |
| 12781 | write out any global entry stubs. */ | |
| 12782 | ||
| 12783 | static bfd_boolean | |
| 12784 | build_global_entry_stubs (struct elf_link_hash_entry *h, void *inf) | |
| 12785 | { | |
| 12786 | struct bfd_link_info *info; | |
| 12787 | struct ppc_link_hash_table *htab; | |
| 12788 | struct plt_entry *pent; | |
| 12789 | asection *s; | |
| 12790 | ||
| 12791 | if (h->root.type == bfd_link_hash_indirect) | |
| 12792 | return TRUE; | |
| 12793 | ||
| 12794 | if (!h->pointer_equality_needed) | |
| 12795 | return TRUE; | |
| 12796 | ||
| 12797 | if (h->def_regular) | |
| 12798 | return TRUE; | |
| 12799 | ||
| 12800 | info = inf; | |
| 12801 | htab = ppc_hash_table (info); | |
| 12802 | if (htab == NULL) | |
| 12803 | return FALSE; | |
| 12804 | ||
| 12805 | s = htab->glink; | |
| 12806 | for (pent = h->plt.plist; pent != NULL; pent = pent->next) | |
| 12807 | if (pent->plt.offset != (bfd_vma) -1 | |
| 12808 | && pent->addend == 0) | |
| 12809 | { | |
| 12810 | bfd_byte *p; | |
| 12811 | asection *plt; | |
| 12812 | bfd_vma off; | |
| 12813 | ||
| a345bc8d | 12814 | p = s->contents + h->root.u.def.value; |
| 33e44f2e | 12815 | plt = htab->elf.splt; |
| a345bc8d AM |
12816 | if (!htab->elf.dynamic_sections_created |
| 12817 | || h->dynindx == -1) | |
| 33e44f2e | 12818 | plt = htab->elf.iplt; |
| a345bc8d AM |
12819 | off = pent->plt.offset + plt->output_offset + plt->output_section->vma; |
| 12820 | off -= h->root.u.def.value + s->output_offset + s->output_section->vma; | |
| 12821 | ||
| 12822 | if (off + 0x80008000 > 0xffffffff || (off & 3) != 0) | |
| 12823 | { | |
| 12824 | info->callbacks->einfo | |
| 12825 | (_("%P: linkage table error against `%T'\n"), | |
| 12826 | h->root.root.string); | |
| 12827 | bfd_set_error (bfd_error_bad_value); | |
| 12828 | htab->stub_error = TRUE; | |
| 12829 | } | |
| 12830 | ||
| 7341d5e2 AM |
12831 | htab->stub_count[ppc_stub_global_entry - 1] += 1; |
| 12832 | if (htab->params->emit_stub_syms) | |
| 12833 | { | |
| 12834 | size_t len = strlen (h->root.root.string); | |
| 12835 | char *name = bfd_malloc (sizeof "12345678.global_entry." + len); | |
| 12836 | ||
| 12837 | if (name == NULL) | |
| 12838 | return FALSE; | |
| 12839 | ||
| 12840 | sprintf (name, "%08x.global_entry.%s", s->id, h->root.root.string); | |
| 12841 | h = elf_link_hash_lookup (&htab->elf, name, TRUE, FALSE, FALSE); | |
| 12842 | if (h == NULL) | |
| 12843 | return FALSE; | |
| 12844 | if (h->root.type == bfd_link_hash_new) | |
| 12845 | { | |
| 12846 | h->root.type = bfd_link_hash_defined; | |
| 12847 | h->root.u.def.section = s; | |
| 12848 | h->root.u.def.value = p - s->contents; | |
| 12849 | h->ref_regular = 1; | |
| 12850 | h->def_regular = 1; | |
| 12851 | h->ref_regular_nonweak = 1; | |
| 12852 | h->forced_local = 1; | |
| 12853 | h->non_elf = 0; | |
| 2ec55de3 | 12854 | h->root.linker_def = 1; |
| 7341d5e2 AM |
12855 | } |
| 12856 | } | |
| 12857 | ||
| a345bc8d AM |
12858 | if (PPC_HA (off) != 0) |
| 12859 | { | |
| 12860 | bfd_put_32 (s->owner, ADDIS_R12_R12 | PPC_HA (off), p); | |
| 12861 | p += 4; | |
| 12862 | } | |
| 12863 | bfd_put_32 (s->owner, LD_R12_0R12 | PPC_LO (off), p); | |
| 12864 | p += 4; | |
| 12865 | bfd_put_32 (s->owner, MTCTR_R12, p); | |
| 12866 | p += 4; | |
| 12867 | bfd_put_32 (s->owner, BCTR, p); | |
| 12868 | break; | |
| 12869 | } | |
| 12870 | return TRUE; | |
| 12871 | } | |
| 12872 | ||
| 721956f4 AM |
12873 | /* Build all the stubs associated with the current output file. |
| 12874 | The stubs are kept in a hash table attached to the main linker | |
| 12875 | hash table. This function is called via gldelf64ppc_finish. */ | |
| 12876 | ||
| b34976b6 | 12877 | bfd_boolean |
| e7d1c40c | 12878 | ppc64_elf_build_stubs (struct bfd_link_info *info, |
| 4ce794b7 | 12879 | char **stats) |
| 5d1634d7 AM |
12880 | { |
| 12881 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| a4b6fadd | 12882 | struct map_stub *group; |
| 721956f4 | 12883 | asection *stub_sec; |
| 5d1634d7 | 12884 | bfd_byte *p; |
| e717da7e | 12885 | int stub_sec_count = 0; |
| 5d1634d7 | 12886 | |
| 4dfe6ac6 NC |
12887 | if (htab == NULL) |
| 12888 | return FALSE; | |
| 12889 | ||
| eea6121a | 12890 | /* Allocate memory to hold the linker stubs. */ |
| e7d1c40c | 12891 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
12892 | stub_sec != NULL; |
| 12893 | stub_sec = stub_sec->next) | |
| eea6121a AM |
12894 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0 |
| 12895 | && stub_sec->size != 0) | |
| e717da7e | 12896 | { |
| e7d1c40c | 12897 | stub_sec->contents = bfd_zalloc (htab->params->stub_bfd, stub_sec->size); |
| eea6121a AM |
12898 | if (stub_sec->contents == NULL) |
| 12899 | return FALSE; | |
| 12900 | /* We want to check that built size is the same as calculated | |
| 12901 | size. rawsize is a convenient location to use. */ | |
| 12902 | stub_sec->rawsize = stub_sec->size; | |
| 12903 | stub_sec->size = 0; | |
| e717da7e | 12904 | } |
| 5d1634d7 | 12905 | |
| 23eb7e01 | 12906 | if (htab->glink != NULL && htab->glink->size != 0) |
| 5d1634d7 | 12907 | { |
| 9f951329 | 12908 | unsigned int indx; |
| ad8e1ba5 | 12909 | bfd_vma plt0; |
| 9f951329 | 12910 | |
| 721956f4 | 12911 | /* Build the .glink plt call stub. */ |
| e7d1c40c | 12912 | if (htab->params->emit_stub_syms) |
| 97b639ba AM |
12913 | { |
| 12914 | struct elf_link_hash_entry *h; | |
| 468392fb AM |
12915 | h = elf_link_hash_lookup (&htab->elf, "__glink_PLTresolve", |
| 12916 | TRUE, FALSE, FALSE); | |
| 97b639ba AM |
12917 | if (h == NULL) |
| 12918 | return FALSE; | |
| 12919 | if (h->root.type == bfd_link_hash_new) | |
| 12920 | { | |
| 12921 | h->root.type = bfd_link_hash_defined; | |
| 12922 | h->root.u.def.section = htab->glink; | |
| ee4bf8d2 | 12923 | h->root.u.def.value = 8; |
| f5385ebf AM |
12924 | h->ref_regular = 1; |
| 12925 | h->def_regular = 1; | |
| 12926 | h->ref_regular_nonweak = 1; | |
| 12927 | h->forced_local = 1; | |
| 12928 | h->non_elf = 0; | |
| 2ec55de3 | 12929 | h->root.linker_def = 1; |
| 97b639ba AM |
12930 | } |
| 12931 | } | |
| 33e44f2e AM |
12932 | plt0 = (htab->elf.splt->output_section->vma |
| 12933 | + htab->elf.splt->output_offset | |
| 12934 | - 16); | |
| 176a0d42 AM |
12935 | if (info->emitrelocations) |
| 12936 | { | |
| 12937 | Elf_Internal_Rela *r = get_relocs (htab->glink, 1); | |
| 12938 | if (r == NULL) | |
| 12939 | return FALSE; | |
| 12940 | r->r_offset = (htab->glink->output_offset | |
| 12941 | + htab->glink->output_section->vma); | |
| 12942 | r->r_info = ELF64_R_INFO (0, R_PPC64_REL64); | |
| 12943 | r->r_addend = plt0; | |
| 12944 | } | |
| 4ce794b7 | 12945 | p = htab->glink->contents; |
| 176a0d42 | 12946 | plt0 -= htab->glink->output_section->vma + htab->glink->output_offset; |
| ee4bf8d2 AM |
12947 | bfd_put_64 (htab->glink->owner, plt0, p); |
| 12948 | p += 8; | |
| b9e5796b AM |
12949 | if (htab->opd_abi) |
| 12950 | { | |
| 12951 | bfd_put_32 (htab->glink->owner, MFLR_R12, p); | |
| 12952 | p += 4; | |
| 12953 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12954 | p += 4; | |
| 12955 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12956 | p += 4; | |
| 12957 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12958 | p += 4; | |
| 12959 | bfd_put_32 (htab->glink->owner, MTLR_R12, p); | |
| 12960 | p += 4; | |
| 12961 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12962 | p += 4; | |
| 12963 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12964 | p += 4; | |
| 12965 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | 8, p); | |
| 12966 | p += 4; | |
| 12967 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12968 | p += 4; | |
| 12969 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 16, p); | |
| 12970 | p += 4; | |
| 12971 | } | |
| 12972 | else | |
| 12973 | { | |
| 12974 | bfd_put_32 (htab->glink->owner, MFLR_R0, p); | |
| 12975 | p += 4; | |
| 12976 | bfd_put_32 (htab->glink->owner, BCL_20_31, p); | |
| 12977 | p += 4; | |
| 12978 | bfd_put_32 (htab->glink->owner, MFLR_R11, p); | |
| 12979 | p += 4; | |
| 12980 | bfd_put_32 (htab->glink->owner, LD_R2_0R11 | (-16 & 0xfffc), p); | |
| 12981 | p += 4; | |
| 12982 | bfd_put_32 (htab->glink->owner, MTLR_R0, p); | |
| 12983 | p += 4; | |
| 12984 | bfd_put_32 (htab->glink->owner, SUB_R12_R12_R11, p); | |
| 12985 | p += 4; | |
| 12986 | bfd_put_32 (htab->glink->owner, ADD_R11_R2_R11, p); | |
| 12987 | p += 4; | |
| 12988 | bfd_put_32 (htab->glink->owner, ADDI_R0_R12 | (-48 & 0xffff), p); | |
| 12989 | p += 4; | |
| 12990 | bfd_put_32 (htab->glink->owner, LD_R12_0R11, p); | |
| 12991 | p += 4; | |
| 12992 | bfd_put_32 (htab->glink->owner, SRDI_R0_R0_2, p); | |
| 12993 | p += 4; | |
| 12994 | bfd_put_32 (htab->glink->owner, MTCTR_R12, p); | |
| 12995 | p += 4; | |
| 12996 | bfd_put_32 (htab->glink->owner, LD_R11_0R11 | 8, p); | |
| 12997 | p += 4; | |
| 12998 | } | |
| 4ce794b7 | 12999 | bfd_put_32 (htab->glink->owner, BCTR, p); |
| ad8e1ba5 | 13000 | p += 4; |
| ee4bf8d2 AM |
13001 | while (p - htab->glink->contents < GLINK_CALL_STUB_SIZE) |
| 13002 | { | |
| 13003 | bfd_put_32 (htab->glink->owner, NOP, p); | |
| 13004 | p += 4; | |
| 13005 | } | |
| ad8e1ba5 | 13006 | |
| 9f951329 AM |
13007 | /* Build the .glink lazy link call stubs. */ |
| 13008 | indx = 0; | |
| a345bc8d | 13009 | while (p < htab->glink->contents + htab->glink->rawsize) |
| 9f951329 | 13010 | { |
| b9e5796b | 13011 | if (htab->opd_abi) |
| 9f951329 | 13012 | { |
| b9e5796b AM |
13013 | if (indx < 0x8000) |
| 13014 | { | |
| 13015 | bfd_put_32 (htab->glink->owner, LI_R0_0 | indx, p); | |
| 13016 | p += 4; | |
| 13017 | } | |
| 13018 | else | |
| 13019 | { | |
| 13020 | bfd_put_32 (htab->glink->owner, LIS_R0_0 | PPC_HI (indx), p); | |
| 13021 | p += 4; | |
| 13022 | bfd_put_32 (htab->glink->owner, ORI_R0_R0_0 | PPC_LO (indx), | |
| 13023 | p); | |
| 13024 | p += 4; | |
| 13025 | } | |
| 9f951329 | 13026 | } |
| 4ce794b7 | 13027 | bfd_put_32 (htab->glink->owner, |
| ee4bf8d2 | 13028 | B_DOT | ((htab->glink->contents - p + 8) & 0x3fffffc), p); |
| a16d5acb | 13029 | indx++; |
| 9f951329 AM |
13030 | p += 4; |
| 13031 | } | |
| a345bc8d AM |
13032 | |
| 13033 | /* Build .glink global entry stubs. */ | |
| 13034 | if (htab->glink->size > htab->glink->rawsize) | |
| afe397ea | 13035 | elf_link_hash_traverse (&htab->elf, build_global_entry_stubs, info); |
| 5d1634d7 | 13036 | } |
| 5d1634d7 | 13037 | |
| 7341d5e2 | 13038 | if (htab->brlt != NULL && htab->brlt->size != 0) |
| 721956f4 | 13039 | { |
| 4ce794b7 | 13040 | htab->brlt->contents = bfd_zalloc (htab->brlt->owner, |
| eea6121a | 13041 | htab->brlt->size); |
| 4ce794b7 | 13042 | if (htab->brlt->contents == NULL) |
| b34976b6 | 13043 | return FALSE; |
| 721956f4 | 13044 | } |
| ee75fd95 | 13045 | if (htab->relbrlt != NULL && htab->relbrlt->size != 0) |
| 63bc6f6c AM |
13046 | { |
| 13047 | htab->relbrlt->contents = bfd_zalloc (htab->relbrlt->owner, | |
| eea6121a | 13048 | htab->relbrlt->size); |
| 63bc6f6c AM |
13049 | if (htab->relbrlt->contents == NULL) |
| 13050 | return FALSE; | |
| 13051 | } | |
| 5d1634d7 | 13052 | |
| 721956f4 AM |
13053 | /* Build the stubs as directed by the stub hash table. */ |
| 13054 | bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info); | |
| 5d1634d7 | 13055 | |
| a4b6fadd AM |
13056 | for (group = htab->group; group != NULL; group = group->next) |
| 13057 | if (group->needs_save_res) | |
| 13058 | { | |
| 13059 | stub_sec = group->stub_sec; | |
| 13060 | memcpy (stub_sec->contents + stub_sec->size, htab->sfpr->contents, | |
| 13061 | htab->sfpr->size); | |
| 13062 | if (htab->params->emit_stub_syms) | |
| 13063 | { | |
| 13064 | unsigned int i; | |
| 13065 | ||
| 13066 | for (i = 0; i < ARRAY_SIZE (save_res_funcs); i++) | |
| 13067 | if (!sfpr_define (info, &save_res_funcs[i], stub_sec)) | |
| 13068 | return FALSE; | |
| 13069 | } | |
| 13070 | stub_sec->size += htab->sfpr->size; | |
| 13071 | } | |
| 13072 | ||
| aa8a7074 AM |
13073 | if (htab->relbrlt != NULL) |
| 13074 | htab->relbrlt->reloc_count = 0; | |
| 13075 | ||
| e7d1c40c AM |
13076 | if (htab->params->plt_stub_align != 0) |
| 13077 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 794e51c0 AM |
13078 | stub_sec != NULL; |
| 13079 | stub_sec = stub_sec->next) | |
| 13080 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| e7d1c40c AM |
13081 | stub_sec->size = ((stub_sec->size |
| 13082 | + (1 << htab->params->plt_stub_align) - 1) | |
| 29f628db | 13083 | & -(1 << htab->params->plt_stub_align)); |
| 794e51c0 | 13084 | |
| e7d1c40c | 13085 | for (stub_sec = htab->params->stub_bfd->sections; |
| 721956f4 AM |
13086 | stub_sec != NULL; |
| 13087 | stub_sec = stub_sec->next) | |
| e717da7e AM |
13088 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) |
| 13089 | { | |
| 13090 | stub_sec_count += 1; | |
| eea6121a | 13091 | if (stub_sec->rawsize != stub_sec->size) |
| e717da7e AM |
13092 | break; |
| 13093 | } | |
| 5d1634d7 | 13094 | |
| da44f4e5 AM |
13095 | /* Note that the glink_eh_frame check here is not only testing that |
| 13096 | the generated size matched the calculated size but also that | |
| 13097 | bfd_elf_discard_info didn't make any changes to the section. */ | |
| 721956f4 | 13098 | if (stub_sec != NULL |
| 58d180e8 AM |
13099 | || (htab->glink_eh_frame != NULL |
| 13100 | && htab->glink_eh_frame->rawsize != htab->glink_eh_frame->size)) | |
| 5d1634d7 | 13101 | { |
| b34976b6 | 13102 | htab->stub_error = TRUE; |
| 8de848d8 | 13103 | info->callbacks->einfo (_("%P: stubs don't match calculated size\n")); |
| 5d1634d7 | 13104 | } |
| 721956f4 | 13105 | |
| d2a300cf AM |
13106 | if (htab->stub_error) |
| 13107 | return FALSE; | |
| 13108 | ||
| 13109 | if (stats != NULL) | |
| 13110 | { | |
| 13111 | *stats = bfd_malloc (500); | |
| 13112 | if (*stats == NULL) | |
| 13113 | return FALSE; | |
| 13114 | ||
| ee75fd95 | 13115 | sprintf (*stats, _("linker stubs in %u group%s\n" |
| d2a300cf AM |
13116 | " branch %lu\n" |
| 13117 | " toc adjust %lu\n" | |
| 13118 | " long branch %lu\n" | |
| 13119 | " long toc adj %lu\n" | |
| 794e51c0 | 13120 | " plt call %lu\n" |
| 7341d5e2 AM |
13121 | " plt call toc %lu\n" |
| 13122 | " global entry %lu"), | |
| e717da7e | 13123 | stub_sec_count, |
| ee75fd95 | 13124 | stub_sec_count == 1 ? "" : "s", |
| 4ce794b7 AM |
13125 | htab->stub_count[ppc_stub_long_branch - 1], |
| 13126 | htab->stub_count[ppc_stub_long_branch_r2off - 1], | |
| 13127 | htab->stub_count[ppc_stub_plt_branch - 1], | |
| 13128 | htab->stub_count[ppc_stub_plt_branch_r2off - 1], | |
| 794e51c0 | 13129 | htab->stub_count[ppc_stub_plt_call - 1], |
| 7341d5e2 AM |
13130 | htab->stub_count[ppc_stub_plt_call_r2save - 1], |
| 13131 | htab->stub_count[ppc_stub_global_entry - 1]); | |
| d2a300cf AM |
13132 | } |
| 13133 | return TRUE; | |
| 5bd4f169 AM |
13134 | } |
| 13135 | ||
| 99877b66 AM |
13136 | /* This function undoes the changes made by add_symbol_adjust. */ |
| 13137 | ||
| 13138 | static bfd_boolean | |
| 13139 | undo_symbol_twiddle (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED) | |
| 13140 | { | |
| 13141 | struct ppc_link_hash_entry *eh; | |
| 13142 | ||
| 13143 | if (h->root.type == bfd_link_hash_indirect) | |
| 13144 | return TRUE; | |
| 13145 | ||
| 99877b66 AM |
13146 | eh = (struct ppc_link_hash_entry *) h; |
| 13147 | if (eh->elf.root.type != bfd_link_hash_undefweak || !eh->was_undefined) | |
| 13148 | return TRUE; | |
| 13149 | ||
| 13150 | eh->elf.root.type = bfd_link_hash_undefined; | |
| 13151 | return TRUE; | |
| 13152 | } | |
| 13153 | ||
| 13154 | void | |
| 13155 | ppc64_elf_restore_symbols (struct bfd_link_info *info) | |
| 13156 | { | |
| 13157 | struct ppc_link_hash_table *htab = ppc_hash_table (info); | |
| 4dfe6ac6 NC |
13158 | |
| 13159 | if (htab != NULL) | |
| 13160 | elf_link_hash_traverse (&htab->elf, undo_symbol_twiddle, info); | |
| 99877b66 AM |
13161 | } |
| 13162 | ||
| 60124e18 AM |
13163 | /* What to do when ld finds relocations against symbols defined in |
| 13164 | discarded sections. */ | |
| 13165 | ||
| 13166 | static unsigned int | |
| 13167 | ppc64_elf_action_discarded (asection *sec) | |
| 13168 | { | |
| 13169 | if (strcmp (".opd", sec->name) == 0) | |
| 13170 | return 0; | |
| 13171 | ||
| 13172 | if (strcmp (".toc", sec->name) == 0) | |
| 13173 | return 0; | |
| 13174 | ||
| bce50a28 JJ |
13175 | if (strcmp (".toc1", sec->name) == 0) |
| 13176 | return 0; | |
| 13177 | ||
| 60124e18 AM |
13178 | return _bfd_elf_default_action_discarded (sec); |
| 13179 | } | |
| 13180 | ||
| 5bd4f169 AM |
13181 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 13182 | to handle the relocations for a section. | |
| 13183 | ||
| 13184 | The relocs are always passed as Rela structures; if the section | |
| 13185 | actually uses Rel structures, the r_addend field will always be | |
| 13186 | zero. | |
| 13187 | ||
| 13188 | This function is responsible for adjust the section contents as | |
| 13189 | necessary, and (if using Rela relocs and generating a | |
| 1049f94e | 13190 | relocatable output file) adjusting the reloc addend as |
| 5bd4f169 AM |
13191 | necessary. |
| 13192 | ||
| 13193 | This function does not have to worry about setting the reloc | |
| 13194 | address or the reloc symbol index. | |
| 13195 | ||
| 13196 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
| 13197 | ||
| 13198 | LOCAL_SECTIONS is an array giving the section in the input file | |
| 13199 | corresponding to the st_shndx field of each local symbol. | |
| 13200 | ||
| 13201 | The global hash table entry for the global symbols can be found | |
| 13202 | via elf_sym_hashes (input_bfd). | |
| 13203 | ||
| 1049f94e | 13204 | When generating relocatable output, this function must handle |
| 5bd4f169 AM |
13205 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 13206 | going to be the section symbol corresponding to the output | |
| 13207 | section, which means that the addend must be adjusted | |
| 13208 | accordingly. */ | |
| 13209 | ||
| b34976b6 | 13210 | static bfd_boolean |
| 4ce794b7 AM |
13211 | ppc64_elf_relocate_section (bfd *output_bfd, |
| 13212 | struct bfd_link_info *info, | |
| 13213 | bfd *input_bfd, | |
| 13214 | asection *input_section, | |
| 13215 | bfd_byte *contents, | |
| 13216 | Elf_Internal_Rela *relocs, | |
| 13217 | Elf_Internal_Sym *local_syms, | |
| 13218 | asection **local_sections) | |
| 5bd4f169 | 13219 | { |
| 65f38f15 | 13220 | struct ppc_link_hash_table *htab; |
| 5bd4f169 AM |
13221 | Elf_Internal_Shdr *symtab_hdr; |
| 13222 | struct elf_link_hash_entry **sym_hashes; | |
| 5bd4f169 | 13223 | Elf_Internal_Rela *rel; |
| c316a17c | 13224 | Elf_Internal_Rela *wrel; |
| 5bd4f169 | 13225 | Elf_Internal_Rela *relend; |
| 411e1bfb AM |
13226 | Elf_Internal_Rela outrel; |
| 13227 | bfd_byte *loc; | |
| 411e1bfb | 13228 | struct got_entry **local_got_ents; |
| 5bd4f169 | 13229 | bfd_vma TOCstart; |
| b34976b6 AM |
13230 | bfd_boolean ret = TRUE; |
| 13231 | bfd_boolean is_opd; | |
| 794e51c0 AM |
13232 | /* Assume 'at' branch hints. */ |
| 13233 | bfd_boolean is_isa_v2 = TRUE; | |
| 4fe5ca5b | 13234 | bfd_vma d_offset = (bfd_big_endian (output_bfd) ? 2 : 0); |
| 5bd4f169 | 13235 | |
| 65f38f15 | 13236 | /* Initialize howto table if needed. */ |
| 5bd4f169 | 13237 | if (!ppc64_elf_howto_table[R_PPC64_ADDR32]) |
| 5bd4f169 AM |
13238 | ppc_howto_init (); |
| 13239 | ||
| 65f38f15 | 13240 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
13241 | if (htab == NULL) |
| 13242 | return FALSE; | |
| ee75fd95 AM |
13243 | |
| 13244 | /* Don't relocate stub sections. */ | |
| e7d1c40c | 13245 | if (input_section->owner == htab->params->stub_bfd) |
| ee75fd95 AM |
13246 | return TRUE; |
| 13247 | ||
| 0c8d6e5c | 13248 | BFD_ASSERT (is_ppc64_elf (input_bfd)); |
| 0ffa91dd | 13249 | |
| 411e1bfb | 13250 | local_got_ents = elf_local_got_ents (input_bfd); |
| 5bd4f169 | 13251 | TOCstart = elf_gp (output_bfd); |
| 0ffa91dd | 13252 | symtab_hdr = &elf_symtab_hdr (input_bfd); |
| 5bd4f169 | 13253 | sym_hashes = elf_sym_hashes (input_bfd); |
| 7c8fe5c4 | 13254 | is_opd = ppc64_elf_section_data (input_section)->sec_type == sec_opd; |
| 65f38f15 | 13255 | |
| c316a17c | 13256 | rel = wrel = relocs; |
| 5bd4f169 | 13257 | relend = relocs + input_section->reloc_count; |
| c316a17c | 13258 | for (; rel < relend; wrel++, rel++) |
| 5bd4f169 | 13259 | { |
| 04c9666a | 13260 | enum elf_ppc64_reloc_type r_type; |
| 31c76678 | 13261 | bfd_vma addend; |
| 5bd4f169 AM |
13262 | bfd_reloc_status_type r; |
| 13263 | Elf_Internal_Sym *sym; | |
| 13264 | asection *sec; | |
| 039b3fef AM |
13265 | struct elf_link_hash_entry *h_elf; |
| 13266 | struct ppc_link_hash_entry *h; | |
| 13267 | struct ppc_link_hash_entry *fdh; | |
| 5bd4f169 | 13268 | const char *sym_name; |
| 0d4792f7 | 13269 | unsigned long r_symndx, toc_symndx; |
| 3a71aa26 | 13270 | bfd_vma toc_addend; |
| f961d9dd AM |
13271 | unsigned char tls_mask, tls_gd, tls_type; |
| 13272 | unsigned char sym_type; | |
| 5bd4f169 | 13273 | bfd_vma relocation; |
| b34976b6 AM |
13274 | bfd_boolean unresolved_reloc; |
| 13275 | bfd_boolean warned; | |
| bc30df16 | 13276 | enum { DEST_NORMAL, DEST_OPD, DEST_STUB } reloc_dest; |
| 67f0cbdb | 13277 | unsigned int insn; |
| e11840f9 | 13278 | unsigned int mask; |
| 721956f4 AM |
13279 | struct ppc_stub_hash_entry *stub_entry; |
| 13280 | bfd_vma max_br_offset; | |
| 13281 | bfd_vma from; | |
| c316a17c | 13282 | Elf_Internal_Rela orig_rel; |
| b80eed39 AM |
13283 | reloc_howto_type *howto; |
| 13284 | struct reloc_howto_struct alt_howto; | |
| 5bd4f169 | 13285 | |
| c316a17c AM |
13286 | again: |
| 13287 | orig_rel = *rel; | |
| 13288 | ||
| 4ce794b7 | 13289 | r_type = ELF64_R_TYPE (rel->r_info); |
| 5bd4f169 | 13290 | r_symndx = ELF64_R_SYM (rel->r_info); |
| ee87f2da AM |
13291 | |
| 13292 | /* For old style R_PPC64_TOC relocs with a zero symbol, use the | |
| 13293 | symbol of the previous ADDR64 reloc. The symbol gives us the | |
| 13294 | proper TOC base to use. */ | |
| 13295 | if (rel->r_info == ELF64_R_INFO (0, R_PPC64_TOC) | |
| c316a17c AM |
13296 | && wrel != relocs |
| 13297 | && ELF64_R_TYPE (wrel[-1].r_info) == R_PPC64_ADDR64 | |
| ee87f2da | 13298 | && is_opd) |
| c316a17c | 13299 | r_symndx = ELF64_R_SYM (wrel[-1].r_info); |
| ee87f2da | 13300 | |
| 4ce794b7 AM |
13301 | sym = NULL; |
| 13302 | sec = NULL; | |
| 039b3fef | 13303 | h_elf = NULL; |
| 4ce794b7 | 13304 | sym_name = NULL; |
| b34976b6 AM |
13305 | unresolved_reloc = FALSE; |
| 13306 | warned = FALSE; | |
| 65f38f15 | 13307 | |
| 0b13192e | 13308 | if (r_symndx < symtab_hdr->sh_info) |
| 5bd4f169 AM |
13309 | { |
| 13310 | /* It's a local symbol. */ | |
| 74f0fb50 | 13311 | struct _opd_sec_data *opd; |
| 4025353c | 13312 | |
| 5bd4f169 AM |
13313 | sym = local_syms + r_symndx; |
| 13314 | sec = local_sections[r_symndx]; | |
| 26c61ae5 | 13315 | sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec); |
| 0d4792f7 | 13316 | sym_type = ELF64_ST_TYPE (sym->st_info); |
| 8517fae7 | 13317 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 74f0fb50 AM |
13318 | opd = get_opd_info (sec); |
| 13319 | if (opd != NULL && opd->adjust != NULL) | |
| 1e2f5b6e | 13320 | { |
| 51aecdc5 AM |
13321 | long adjust = opd->adjust[OPD_NDX (sym->st_value |
| 13322 | + rel->r_addend)]; | |
| 4025353c AM |
13323 | if (adjust == -1) |
| 13324 | relocation = 0; | |
| 13325 | else | |
| 4cc603a5 AM |
13326 | { |
| 13327 | /* If this is a relocation against the opd section sym | |
| 13328 | and we have edited .opd, adjust the reloc addend so | |
| 13329 | that ld -r and ld --emit-relocs output is correct. | |
| 13330 | If it is a reloc against some other .opd symbol, | |
| 13331 | then the symbol value will be adjusted later. */ | |
| 13332 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
| 13333 | rel->r_addend += adjust; | |
| 13334 | else | |
| 13335 | relocation += adjust; | |
| 13336 | } | |
| 1e2f5b6e | 13337 | } |
| 5bd4f169 AM |
13338 | } |
| 13339 | else | |
| 13340 | { | |
| 62d887d4 L |
13341 | bfd_boolean ignored; |
| 13342 | ||
| b2a8e766 AM |
13343 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, |
| 13344 | r_symndx, symtab_hdr, sym_hashes, | |
| 039b3fef | 13345 | h_elf, sec, relocation, |
| 62d887d4 | 13346 | unresolved_reloc, warned, ignored); |
| 039b3fef AM |
13347 | sym_name = h_elf->root.root.string; |
| 13348 | sym_type = h_elf->type; | |
| b69fdb4e AM |
13349 | if (sec != NULL |
| 13350 | && sec->owner == output_bfd | |
| 13351 | && strcmp (sec->name, ".opd") == 0) | |
| 13352 | { | |
| 13353 | /* This is a symbol defined in a linker script. All | |
| 13354 | such are defined in output sections, even those | |
| 13355 | defined by simple assignment from a symbol defined in | |
| 13356 | an input section. Transfer the symbol to an | |
| 13357 | appropriate input .opd section, so that a branch to | |
| 13358 | this symbol will be mapped to the location specified | |
| 13359 | by the opd entry. */ | |
| 13360 | struct bfd_link_order *lo; | |
| 13361 | for (lo = sec->map_head.link_order; lo != NULL; lo = lo->next) | |
| 13362 | if (lo->type == bfd_indirect_link_order) | |
| 13363 | { | |
| 13364 | asection *isec = lo->u.indirect.section; | |
| 13365 | if (h_elf->root.u.def.value >= isec->output_offset | |
| 13366 | && h_elf->root.u.def.value < (isec->output_offset | |
| 13367 | + isec->size)) | |
| 13368 | { | |
| 13369 | h_elf->root.u.def.value -= isec->output_offset; | |
| 13370 | h_elf->root.u.def.section = isec; | |
| 13371 | sec = isec; | |
| 13372 | break; | |
| 13373 | } | |
| 13374 | } | |
| 13375 | } | |
| 5bd4f169 | 13376 | } |
| 039b3fef | 13377 | h = (struct ppc_link_hash_entry *) h_elf; |
| 5bd4f169 | 13378 | |
| dbaa2011 | 13379 | if (sec != NULL && discarded_section (sec)) |
| c316a17c AM |
13380 | { |
| 13381 | _bfd_clear_contents (ppc64_elf_howto_table[r_type], | |
| 13382 | input_bfd, input_section, | |
| 13383 | contents + rel->r_offset); | |
| 13384 | wrel->r_offset = rel->r_offset; | |
| 13385 | wrel->r_info = 0; | |
| 13386 | wrel->r_addend = 0; | |
| 13387 | ||
| 13388 | /* For ld -r, remove relocations in debug sections against | |
| 13389 | sections defined in discarded sections. Not done for | |
| 13390 | non-debug to preserve relocs in .eh_frame which the | |
| 13391 | eh_frame editing code expects to be present. */ | |
| 13392 | if (bfd_link_relocatable (info) | |
| 13393 | && (input_section->flags & SEC_DEBUGGING)) | |
| 13394 | wrel--; | |
| 13395 | ||
| 13396 | continue; | |
| 13397 | } | |
| ab96bf03 | 13398 | |
| 0e1862bb | 13399 | if (bfd_link_relocatable (info)) |
| c316a17c | 13400 | goto copy_reloc; |
| ab96bf03 | 13401 | |
| f40da81b AM |
13402 | if (h != NULL && &h->elf == htab->elf.hgot) |
| 13403 | { | |
| 6f20ed8a | 13404 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; |
| f40da81b AM |
13405 | sec = bfd_abs_section_ptr; |
| 13406 | unresolved_reloc = FALSE; | |
| 13407 | } | |
| 13408 | ||
| 951fd09b AM |
13409 | /* TLS optimizations. Replace instruction sequences and relocs |
| 13410 | based on information we collected in tls_optimize. We edit | |
| 13411 | RELOCS so that --emit-relocs will output something sensible | |
| 13412 | for the final instruction stream. */ | |
| 13413 | tls_mask = 0; | |
| 13414 | tls_gd = 0; | |
| 0d4792f7 | 13415 | toc_symndx = 0; |
| 727fc41e AM |
13416 | if (h != NULL) |
| 13417 | tls_mask = h->tls_mask; | |
| 13418 | else if (local_got_ents != NULL) | |
| 411e1bfb | 13419 | { |
| e054468f AM |
13420 | struct plt_entry **local_plt = (struct plt_entry **) |
| 13421 | (local_got_ents + symtab_hdr->sh_info); | |
| f961d9dd | 13422 | unsigned char *lgot_masks = (unsigned char *) |
| e054468f | 13423 | (local_plt + symtab_hdr->sh_info); |
| 727fc41e AM |
13424 | tls_mask = lgot_masks[r_symndx]; |
| 13425 | } | |
| 13426 | if (tls_mask == 0 | |
| 13427 | && (r_type == R_PPC64_TLS | |
| 13428 | || r_type == R_PPC64_TLSGD | |
| 13429 | || r_type == R_PPC64_TLSLD)) | |
| 13430 | { | |
| 13431 | /* Check for toc tls entries. */ | |
| f961d9dd | 13432 | unsigned char *toc_tls; |
| 0d4792f7 | 13433 | |
| 727fc41e AM |
13434 | if (!get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13435 | &local_syms, rel, input_bfd)) | |
| 13436 | return FALSE; | |
| 0d4792f7 | 13437 | |
| 727fc41e AM |
13438 | if (toc_tls) |
| 13439 | tls_mask = *toc_tls; | |
| 0d4792f7 AM |
13440 | } |
| 13441 | ||
| 13442 | /* Check that tls relocs are used with tls syms, and non-tls | |
| 13443 | relocs are used with non-tls syms. */ | |
| cf35638d | 13444 | if (r_symndx != STN_UNDEF |
| 0d4792f7 AM |
13445 | && r_type != R_PPC64_NONE |
| 13446 | && (h == NULL | |
| 039b3fef AM |
13447 | || h->elf.root.type == bfd_link_hash_defined |
| 13448 | || h->elf.root.type == bfd_link_hash_defweak) | |
| 1d483afe AM |
13449 | && (IS_PPC64_TLS_RELOC (r_type) |
| 13450 | != (sym_type == STT_TLS | |
| 13451 | || (sym_type == STT_SECTION | |
| 13452 | && (sec->flags & SEC_THREAD_LOCAL) != 0)))) | |
| 0d4792f7 | 13453 | { |
| 727fc41e AM |
13454 | if (tls_mask != 0 |
| 13455 | && (r_type == R_PPC64_TLS | |
| 13456 | || r_type == R_PPC64_TLSGD | |
| 13457 | || r_type == R_PPC64_TLSLD)) | |
| 0d4792f7 AM |
13458 | /* R_PPC64_TLS is OK against a symbol in the TOC. */ |
| 13459 | ; | |
| 13460 | else | |
| 25f53a85 | 13461 | info->callbacks->einfo |
| 1d483afe | 13462 | (!IS_PPC64_TLS_RELOC (r_type) |
| bc30df16 AM |
13463 | ? _("%P: %H: %s used with TLS symbol `%T'\n") |
| 13464 | : _("%P: %H: %s used with non-TLS symbol `%T'\n"), | |
| 25f53a85 | 13465 | input_bfd, input_section, rel->r_offset, |
| 0d4792f7 AM |
13466 | ppc64_elf_howto_table[r_type]->name, |
| 13467 | sym_name); | |
| 411e1bfb AM |
13468 | } |
| 13469 | ||
| 13470 | /* Ensure reloc mapping code below stays sane. */ | |
| 13471 | if (R_PPC64_TOC16_LO_DS != R_PPC64_TOC16_DS + 1 | |
| 13472 | || R_PPC64_TOC16_LO != R_PPC64_TOC16 + 1 | |
| 13473 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TLSGD16 & 3) | |
| 13474 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TLSGD16_LO & 3) | |
| 13475 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TLSGD16_HI & 3) | |
| 13476 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TLSGD16_HA & 3) | |
| 13477 | || (R_PPC64_GOT_TLSLD16 & 3) != (R_PPC64_GOT_TPREL16_DS & 3) | |
| 13478 | || (R_PPC64_GOT_TLSLD16_LO & 3) != (R_PPC64_GOT_TPREL16_LO_DS & 3) | |
| 13479 | || (R_PPC64_GOT_TLSLD16_HI & 3) != (R_PPC64_GOT_TPREL16_HI & 3) | |
| 13480 | || (R_PPC64_GOT_TLSLD16_HA & 3) != (R_PPC64_GOT_TPREL16_HA & 3)) | |
| 13481 | abort (); | |
| 0d4792f7 | 13482 | |
| 411e1bfb AM |
13483 | switch (r_type) |
| 13484 | { | |
| 13485 | default: | |
| 411e1bfb AM |
13486 | break; |
| 13487 | ||
| ba761f19 AM |
13488 | case R_PPC64_LO_DS_OPT: |
| 13489 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset - d_offset); | |
| 13490 | if ((insn & (0x3f << 26)) != 58u << 26) | |
| 13491 | abort (); | |
| 13492 | insn += (14u << 26) - (58u << 26); | |
| 13493 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset - d_offset); | |
| 13494 | r_type = R_PPC64_TOC16_LO; | |
| 13495 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13496 | break; | |
| 13497 | ||
| 411e1bfb AM |
13498 | case R_PPC64_TOC16: |
| 13499 | case R_PPC64_TOC16_LO: | |
| 13500 | case R_PPC64_TOC16_DS: | |
| 13501 | case R_PPC64_TOC16_LO_DS: | |
| 411e1bfb AM |
13502 | { |
| 13503 | /* Check for toc tls entries. */ | |
| f961d9dd | 13504 | unsigned char *toc_tls; |
| 951fd09b | 13505 | int retval; |
| 411e1bfb | 13506 | |
| 3a71aa26 AM |
13507 | retval = get_tls_mask (&toc_tls, &toc_symndx, &toc_addend, |
| 13508 | &local_syms, rel, input_bfd); | |
| 951fd09b | 13509 | if (retval == 0) |
| 411e1bfb AM |
13510 | return FALSE; |
| 13511 | ||
| 13512 | if (toc_tls) | |
| 13513 | { | |
| 951fd09b | 13514 | tls_mask = *toc_tls; |
| 411e1bfb AM |
13515 | if (r_type == R_PPC64_TOC16_DS |
| 13516 | || r_type == R_PPC64_TOC16_LO_DS) | |
| 81407a69 AM |
13517 | { |
| 13518 | if (tls_mask != 0 | |
| 13519 | && (tls_mask & (TLS_DTPREL | TLS_TPREL)) == 0) | |
| 13520 | goto toctprel; | |
| 13521 | } | |
| 411e1bfb | 13522 | else |
| 951fd09b AM |
13523 | { |
| 13524 | /* If we found a GD reloc pair, then we might be | |
| 13525 | doing a GD->IE transition. */ | |
| 13526 | if (retval == 2) | |
| 13527 | { | |
| 13528 | tls_gd = TLS_TPRELGD; | |
| 13529 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13530 | goto tls_ldgd_opt; |
| 951fd09b AM |
13531 | } |
| 13532 | else if (retval == 3) | |
| 13533 | { | |
| 13534 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 102890f0 | 13535 | goto tls_ldgd_opt; |
| 951fd09b AM |
13536 | } |
| 13537 | } | |
| 411e1bfb AM |
13538 | } |
| 13539 | } | |
| 13540 | break; | |
| 13541 | ||
| 9d6ded02 AM |
13542 | case R_PPC64_GOT_TPREL16_HI: |
| 13543 | case R_PPC64_GOT_TPREL16_HA: | |
| 13544 | if (tls_mask != 0 | |
| 13545 | && (tls_mask & TLS_TPREL) == 0) | |
| 13546 | { | |
| 13547 | rel->r_offset -= d_offset; | |
| 13548 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); | |
| 13549 | r_type = R_PPC64_NONE; | |
| 13550 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13551 | } | |
| 13552 | break; | |
| 13553 | ||
| 411e1bfb AM |
13554 | case R_PPC64_GOT_TPREL16_DS: |
| 13555 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 951fd09b AM |
13556 | if (tls_mask != 0 |
| 13557 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13558 | { |
| 81407a69 | 13559 | toctprel: |
| c316a17c AM |
13560 | insn = bfd_get_32 (output_bfd, |
| 13561 | contents + rel->r_offset - d_offset); | |
| 411e1bfb AM |
13562 | insn &= 31 << 21; |
| 13563 | insn |= 0x3c0d0000; /* addis 0,13,0 */ | |
| c316a17c AM |
13564 | bfd_put_32 (output_bfd, insn, |
| 13565 | contents + rel->r_offset - d_offset); | |
| 411e1bfb | 13566 | r_type = R_PPC64_TPREL16_HA; |
| 0d4792f7 AM |
13567 | if (toc_symndx != 0) |
| 13568 | { | |
| 13569 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13570 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13571 | /* We changed the symbol. Start over in order to |
| 13572 | get h, sym, sec etc. right. */ | |
| c316a17c | 13573 | goto again; |
| 0d4792f7 AM |
13574 | } |
| 13575 | else | |
| 13576 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13577 | } |
| 13578 | break; | |
| 13579 | ||
| 13580 | case R_PPC64_TLS: | |
| 951fd09b AM |
13581 | if (tls_mask != 0 |
| 13582 | && (tls_mask & TLS_TPREL) == 0) | |
| 411e1bfb | 13583 | { |
| 411e1bfb | 13584 | insn = bfd_get_32 (output_bfd, contents + rel->r_offset); |
| 2d0f3896 AM |
13585 | insn = _bfd_elf_ppc_at_tls_transform (insn, 13); |
| 13586 | if (insn == 0) | |
| 411e1bfb | 13587 | abort (); |
| 411e1bfb | 13588 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); |
| 411e1bfb | 13589 | /* Was PPC64_TLS which sits on insn boundary, now |
| 4fe5ca5b GM |
13590 | PPC64_TPREL16_LO which is at low-order half-word. */ |
| 13591 | rel->r_offset += d_offset; | |
| 0d4792f7 AM |
13592 | r_type = R_PPC64_TPREL16_LO; |
| 13593 | if (toc_symndx != 0) | |
| 13594 | { | |
| 13595 | rel->r_info = ELF64_R_INFO (toc_symndx, r_type); | |
| 3a71aa26 | 13596 | rel->r_addend = toc_addend; |
| 0d4792f7 AM |
13597 | /* We changed the symbol. Start over in order to |
| 13598 | get h, sym, sec etc. right. */ | |
| c316a17c | 13599 | goto again; |
| 0d4792f7 AM |
13600 | } |
| 13601 | else | |
| 13602 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 411e1bfb AM |
13603 | } |
| 13604 | break; | |
| 13605 | ||
| 411e1bfb AM |
13606 | case R_PPC64_GOT_TLSGD16_HI: |
| 13607 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b AM |
13608 | tls_gd = TLS_TPRELGD; |
| 13609 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13610 | goto tls_gdld_hi; | |
| 13611 | break; | |
| 13612 | ||
| 411e1bfb AM |
13613 | case R_PPC64_GOT_TLSLD16_HI: |
| 13614 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 13615 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) |
| 411e1bfb | 13616 | { |
| 951fd09b AM |
13617 | tls_gdld_hi: |
| 13618 | if ((tls_mask & tls_gd) != 0) | |
| 13619 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13620 | + R_PPC64_GOT_TPREL16_DS); | |
| 13621 | else | |
| 411e1bfb | 13622 | { |
| 4fe5ca5b | 13623 | rel->r_offset -= d_offset; |
| 727ac201 | 13624 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| 951fd09b | 13625 | r_type = R_PPC64_NONE; |
| 411e1bfb | 13626 | } |
| 951fd09b | 13627 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb AM |
13628 | } |
| 13629 | break; | |
| 13630 | ||
| 951fd09b AM |
13631 | case R_PPC64_GOT_TLSGD16: |
| 13632 | case R_PPC64_GOT_TLSGD16_LO: | |
| 13633 | tls_gd = TLS_TPRELGD; | |
| 13634 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 102890f0 | 13635 | goto tls_ldgd_opt; |
| 951fd09b | 13636 | break; |
| 411e1bfb | 13637 | |
| 951fd09b AM |
13638 | case R_PPC64_GOT_TLSLD16: |
| 13639 | case R_PPC64_GOT_TLSLD16_LO: | |
| 13640 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13641 | { | |
| 3a71aa26 | 13642 | unsigned int insn1, insn2, insn3; |
| 102890f0 AM |
13643 | bfd_vma offset; |
| 13644 | ||
| 13645 | tls_ldgd_opt: | |
| 727fc41e AM |
13646 | offset = (bfd_vma) -1; |
| 13647 | /* If not using the newer R_PPC64_TLSGD/LD to mark | |
| 13648 | __tls_get_addr calls, we must trust that the call | |
| 13649 | stays with its arg setup insns, ie. that the next | |
| 13650 | reloc is the __tls_get_addr call associated with | |
| 13651 | the current reloc. Edit both insns. */ | |
| 13652 | if (input_section->has_tls_get_addr_call | |
| 13653 | && rel + 1 < relend | |
| 13654 | && branch_reloc_hash_match (input_bfd, rel + 1, | |
| 13655 | htab->tls_get_addr, | |
| 13656 | htab->tls_get_addr_fd)) | |
| 13657 | offset = rel[1].r_offset; | |
| b86ac8e3 AM |
13658 | /* We read the low GOT_TLS (or TOC16) insn because we |
| 13659 | need to keep the destination reg. It may be | |
| 13660 | something other than the usual r3, and moved to r3 | |
| 13661 | before the call by intervening code. */ | |
| 13662 | insn1 = bfd_get_32 (output_bfd, | |
| 13663 | contents + rel->r_offset - d_offset); | |
| 102890f0 | 13664 | if ((tls_mask & tls_gd) != 0) |
| 411e1bfb | 13665 | { |
| 102890f0 | 13666 | /* IE */ |
| b86ac8e3 | 13667 | insn1 &= (0x1f << 21) | (0x1f << 16); |
| 102890f0 AM |
13668 | insn1 |= 58 << 26; /* ld */ |
| 13669 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 727fc41e | 13670 | if (offset != (bfd_vma) -1) |
| f58d5a2d | 13671 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 102890f0 AM |
13672 | if ((tls_mask & TLS_EXPLICIT) == 0) |
| 13673 | r_type = (((r_type - (R_PPC64_GOT_TLSGD16 & 3)) & 3) | |
| 13674 | + R_PPC64_GOT_TPREL16_DS); | |
| 411e1bfb | 13675 | else |
| 102890f0 AM |
13676 | r_type += R_PPC64_TOC16_DS - R_PPC64_TOC16; |
| 13677 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13678 | } | |
| 13679 | else | |
| 13680 | { | |
| 13681 | /* LE */ | |
| b86ac8e3 AM |
13682 | insn1 &= 0x1f << 21; |
| 13683 | insn1 |= 0x3c0d0000; /* addis r,13,0 */ | |
| 102890f0 AM |
13684 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13685 | if (tls_gd == 0) | |
| 951fd09b | 13686 | { |
| 102890f0 | 13687 | /* Was an LD reloc. */ |
| 1d483afe AM |
13688 | if (toc_symndx) |
| 13689 | sec = local_sections[toc_symndx]; | |
| 13690 | for (r_symndx = 0; | |
| 13691 | r_symndx < symtab_hdr->sh_info; | |
| 13692 | r_symndx++) | |
| 13693 | if (local_sections[r_symndx] == sec) | |
| 13694 | break; | |
| 13695 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13696 | r_symndx = STN_UNDEF; |
| 102890f0 | 13697 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13698 | if (r_symndx != STN_UNDEF) |
| 1d483afe AM |
13699 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13700 | + sec->output_offset | |
| 13701 | + sec->output_section->vma); | |
| 951fd09b | 13702 | } |
| 102890f0 | 13703 | else if (toc_symndx != 0) |
| 3a71aa26 AM |
13704 | { |
| 13705 | r_symndx = toc_symndx; | |
| 13706 | rel->r_addend = toc_addend; | |
| 13707 | } | |
| 102890f0 AM |
13708 | r_type = R_PPC64_TPREL16_HA; |
| 13709 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 727fc41e AM |
13710 | if (offset != (bfd_vma) -1) |
| 13711 | { | |
| 13712 | rel[1].r_info = ELF64_R_INFO (r_symndx, | |
| 13713 | R_PPC64_TPREL16_LO); | |
| 13714 | rel[1].r_offset = offset + d_offset; | |
| 13715 | rel[1].r_addend = rel->r_addend; | |
| 13716 | } | |
| 102890f0 | 13717 | } |
| 3a71aa26 AM |
13718 | bfd_put_32 (output_bfd, insn1, |
| 13719 | contents + rel->r_offset - d_offset); | |
| 727fc41e AM |
13720 | if (offset != (bfd_vma) -1) |
| 13721 | { | |
| 13722 | insn3 = bfd_get_32 (output_bfd, | |
| 13723 | contents + offset + 4); | |
| 13724 | if (insn3 == NOP | |
| 13725 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13726 | { | |
| 13727 | rel[1].r_offset += 4; | |
| 13728 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13729 | insn2 = NOP; | |
| 13730 | } | |
| 13731 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| 13732 | } | |
| 13733 | if ((tls_mask & tls_gd) == 0 | |
| 13734 | && (tls_gd == 0 || toc_symndx != 0)) | |
| 13735 | { | |
| 13736 | /* We changed the symbol. Start over in order | |
| 13737 | to get h, sym, sec etc. right. */ | |
| c316a17c | 13738 | goto again; |
| 727fc41e AM |
13739 | } |
| 13740 | } | |
| 13741 | break; | |
| 13742 | ||
| 13743 | case R_PPC64_TLSGD: | |
| 13744 | if (tls_mask != 0 && (tls_mask & TLS_GD) == 0) | |
| 13745 | { | |
| 13746 | unsigned int insn2, insn3; | |
| 13747 | bfd_vma offset = rel->r_offset; | |
| 13748 | ||
| 13749 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13750 | { | |
| 13751 | /* IE */ | |
| 13752 | r_type = R_PPC64_NONE; | |
| 13753 | insn2 = 0x7c636a14; /* add 3,3,13 */ | |
| 13754 | } | |
| 13755 | else | |
| 13756 | { | |
| 13757 | /* LE */ | |
| 13758 | if (toc_symndx != 0) | |
| 13759 | { | |
| 13760 | r_symndx = toc_symndx; | |
| 13761 | rel->r_addend = toc_addend; | |
| 13762 | } | |
| 13763 | r_type = R_PPC64_TPREL16_LO; | |
| 13764 | rel->r_offset = offset + d_offset; | |
| 13765 | insn2 = 0x38630000; /* addi 3,3,0 */ | |
| 13766 | } | |
| 13767 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13768 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13769 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13770 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 3a71aa26 AM |
13771 | insn3 = bfd_get_32 (output_bfd, |
| 13772 | contents + offset + 4); | |
| 102890f0 AM |
13773 | if (insn3 == NOP |
| 13774 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13775 | { | |
| 727fc41e | 13776 | rel->r_offset += 4; |
| 3a71aa26 AM |
13777 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); |
| 13778 | insn2 = NOP; | |
| 102890f0 | 13779 | } |
| 102890f0 | 13780 | bfd_put_32 (output_bfd, insn2, contents + offset); |
| 727fc41e | 13781 | if ((tls_mask & TLS_TPRELGD) == 0 && toc_symndx != 0) |
| c316a17c | 13782 | goto again; |
| 411e1bfb | 13783 | } |
| 411e1bfb AM |
13784 | break; |
| 13785 | ||
| 727fc41e AM |
13786 | case R_PPC64_TLSLD: |
| 13787 | if (tls_mask != 0 && (tls_mask & TLS_LD) == 0) | |
| 13788 | { | |
| 13789 | unsigned int insn2, insn3; | |
| 13790 | bfd_vma offset = rel->r_offset; | |
| 13791 | ||
| 13792 | if (toc_symndx) | |
| 13793 | sec = local_sections[toc_symndx]; | |
| 13794 | for (r_symndx = 0; | |
| 13795 | r_symndx < symtab_hdr->sh_info; | |
| 13796 | r_symndx++) | |
| 13797 | if (local_sections[r_symndx] == sec) | |
| 13798 | break; | |
| 13799 | if (r_symndx >= symtab_hdr->sh_info) | |
| cf35638d | 13800 | r_symndx = STN_UNDEF; |
| 727fc41e | 13801 | rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; |
| cf35638d | 13802 | if (r_symndx != STN_UNDEF) |
| 727fc41e AM |
13803 | rel->r_addend -= (local_syms[r_symndx].st_value |
| 13804 | + sec->output_offset | |
| 13805 | + sec->output_section->vma); | |
| 13806 | ||
| 13807 | r_type = R_PPC64_TPREL16_LO; | |
| 13808 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13809 | rel->r_offset = offset + d_offset; | |
| 13810 | /* Zap the reloc on the _tls_get_addr call too. */ | |
| 13811 | BFD_ASSERT (offset == rel[1].r_offset); | |
| f58d5a2d | 13812 | rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); |
| 727fc41e AM |
13813 | insn2 = 0x38630000; /* addi 3,3,0 */ |
| 13814 | insn3 = bfd_get_32 (output_bfd, | |
| 13815 | contents + offset + 4); | |
| 13816 | if (insn3 == NOP | |
| 13817 | || insn3 == CROR_151515 || insn3 == CROR_313131) | |
| 13818 | { | |
| 13819 | rel->r_offset += 4; | |
| 13820 | bfd_put_32 (output_bfd, insn2, contents + offset + 4); | |
| 13821 | insn2 = NOP; | |
| 13822 | } | |
| 13823 | bfd_put_32 (output_bfd, insn2, contents + offset); | |
| c316a17c | 13824 | goto again; |
| 727fc41e AM |
13825 | } |
| 13826 | break; | |
| 13827 | ||
| 411e1bfb | 13828 | case R_PPC64_DTPMOD64: |
| 951fd09b AM |
13829 | if (rel + 1 < relend |
| 13830 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_DTPREL64) | |
| 13831 | && rel[1].r_offset == rel->r_offset + 8) | |
| 411e1bfb | 13832 | { |
| 951fd09b AM |
13833 | if ((tls_mask & TLS_GD) == 0) |
| 13834 | { | |
| 13835 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_NONE); | |
| 13836 | if ((tls_mask & TLS_TPRELGD) != 0) | |
| 13837 | r_type = R_PPC64_TPREL64; | |
| 13838 | else | |
| 13839 | { | |
| 4ce794b7 | 13840 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 951fd09b AM |
13841 | r_type = R_PPC64_NONE; |
| 13842 | } | |
| 13843 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13844 | } | |
| 13845 | } | |
| 13846 | else | |
| 13847 | { | |
| 13848 | if ((tls_mask & TLS_LD) == 0) | |
| 411e1bfb | 13849 | { |
| 4ce794b7 | 13850 | bfd_put_64 (output_bfd, 1, contents + rel->r_offset); |
| 411e1bfb | 13851 | r_type = R_PPC64_NONE; |
| 951fd09b | 13852 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); |
| 411e1bfb | 13853 | } |
| 411e1bfb AM |
13854 | } |
| 13855 | break; | |
| 13856 | ||
| 13857 | case R_PPC64_TPREL64: | |
| 951fd09b | 13858 | if ((tls_mask & TLS_TPREL) == 0) |
| 411e1bfb AM |
13859 | { |
| 13860 | r_type = R_PPC64_NONE; | |
| 13861 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13862 | } | |
| 13863 | break; | |
| 52a82034 | 13864 | |
| 006589cf AM |
13865 | case R_PPC64_ENTRY: |
| 13866 | relocation = TOCstart + htab->sec_info[input_section->id].toc_off; | |
| 13867 | if (!bfd_link_pic (info) | |
| 13868 | && !info->traditional_format | |
| 13869 | && relocation + 0x80008000 <= 0xffffffff) | |
| 13870 | { | |
| 13871 | unsigned int insn1, insn2; | |
| 13872 | ||
| 13873 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13874 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 13875 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
| 13876 | && insn2 == ADD_R2_R2_R12) | |
| 13877 | { | |
| 13878 | bfd_put_32 (output_bfd, | |
| 13879 | LIS_R2 + PPC_HA (relocation), | |
| 13880 | contents + rel->r_offset); | |
| 13881 | bfd_put_32 (output_bfd, | |
| 13882 | ADDI_R2_R2 + PPC_LO (relocation), | |
| 13883 | contents + rel->r_offset + 4); | |
| 13884 | } | |
| 13885 | } | |
| 13886 | else | |
| 13887 | { | |
| 13888 | relocation -= (rel->r_offset | |
| 13889 | + input_section->output_offset | |
| 13890 | + input_section->output_section->vma); | |
| 13891 | if (relocation + 0x80008000 <= 0xffffffff) | |
| 13892 | { | |
| 13893 | unsigned int insn1, insn2; | |
| 13894 | ||
| 13895 | insn1 = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13896 | insn2 = bfd_get_32 (input_bfd, contents + rel->r_offset + 4); | |
| 13897 | if ((insn1 & ~0xfffc) == LD_R2_0R12 | |
| 13898 | && insn2 == ADD_R2_R2_R12) | |
| 13899 | { | |
| 13900 | bfd_put_32 (output_bfd, | |
| 13901 | ADDIS_R2_R12 + PPC_HA (relocation), | |
| 13902 | contents + rel->r_offset); | |
| 13903 | bfd_put_32 (output_bfd, | |
| 13904 | ADDI_R2_R2 + PPC_LO (relocation), | |
| 13905 | contents + rel->r_offset + 4); | |
| 13906 | } | |
| 13907 | } | |
| 13908 | } | |
| 13909 | break; | |
| 13910 | ||
| 52a82034 AM |
13911 | case R_PPC64_REL16_HA: |
| 13912 | /* If we are generating a non-PIC executable, edit | |
| 13913 | . 0: addis 2,12,.TOC.-0b@ha | |
| 13914 | . addi 2,2,.TOC.-0b@l | |
| 13915 | used by ELFv2 global entry points to set up r2, to | |
| 13916 | . lis 2,.TOC.@ha | |
| 13917 | . addi 2,2,.TOC.@l | |
| 13918 | if .TOC. is in range. */ | |
| 0e1862bb | 13919 | if (!bfd_link_pic (info) |
| 810d4e75 | 13920 | && !info->traditional_format |
| 006589cf | 13921 | && !htab->opd_abi |
| 4f038ee5 | 13922 | && rel->r_addend == d_offset |
| 52a82034 AM |
13923 | && h != NULL && &h->elf == htab->elf.hgot |
| 13924 | && rel + 1 < relend | |
| 13925 | && rel[1].r_info == ELF64_R_INFO (r_symndx, R_PPC64_REL16_LO) | |
| 13926 | && rel[1].r_offset == rel->r_offset + 4 | |
| 13927 | && rel[1].r_addend == rel->r_addend + 4 | |
| 13928 | && relocation + 0x80008000 <= 0xffffffff) | |
| 13929 | { | |
| 13930 | unsigned int insn1, insn2; | |
| 13931 | bfd_vma offset = rel->r_offset - d_offset; | |
| 13932 | insn1 = bfd_get_32 (output_bfd, contents + offset); | |
| 13933 | insn2 = bfd_get_32 (output_bfd, contents + offset + 4); | |
| 006589cf AM |
13934 | if ((insn1 & 0xffff0000) == ADDIS_R2_R12 |
| 13935 | && (insn2 & 0xffff0000) == ADDI_R2_R2) | |
| 52a82034 AM |
13936 | { |
| 13937 | r_type = R_PPC64_ADDR16_HA; | |
| 13938 | rel->r_info = ELF64_R_INFO (r_symndx, r_type); | |
| 13939 | rel->r_addend -= d_offset; | |
| 13940 | rel[1].r_info = ELF64_R_INFO (r_symndx, R_PPC64_ADDR16_LO); | |
| 13941 | rel[1].r_addend -= d_offset + 4; | |
| 006589cf | 13942 | bfd_put_32 (output_bfd, LIS_R2, contents + offset); |
| 52a82034 AM |
13943 | } |
| 13944 | } | |
| 13945 | break; | |
| 411e1bfb AM |
13946 | } |
| 13947 | ||
| 13948 | /* Handle other relocations that tweak non-addend part of insn. */ | |
| 86c76c7b | 13949 | insn = 0; |
| b25116a9 AM |
13950 | max_br_offset = 1 << 25; |
| 13951 | addend = rel->r_addend; | |
| bc30df16 | 13952 | reloc_dest = DEST_NORMAL; |
| 65f38f15 | 13953 | switch (r_type) |
| 5bd4f169 AM |
13954 | { |
| 13955 | default: | |
| 65f38f15 | 13956 | break; |
| 5bd4f169 | 13957 | |
| 3b421ab3 AM |
13958 | case R_PPC64_TOCSAVE: |
| 13959 | if (relocation + addend == (rel->r_offset | |
| 13960 | + input_section->output_offset | |
| 13961 | + input_section->output_section->vma) | |
| 13962 | && tocsave_find (htab, NO_INSERT, | |
| 13963 | &local_syms, rel, input_bfd)) | |
| 13964 | { | |
| 13965 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 13966 | if (insn == NOP | |
| 13967 | || insn == CROR_151515 || insn == CROR_313131) | |
| a078d95a AM |
13968 | bfd_put_32 (input_bfd, |
| 13969 | STD_R2_0R1 + STK_TOC (htab), | |
| 3b421ab3 AM |
13970 | contents + rel->r_offset); |
| 13971 | } | |
| 13972 | break; | |
| 13973 | ||
| 65f38f15 AM |
13974 | /* Branch taken prediction relocations. */ |
| 13975 | case R_PPC64_ADDR14_BRTAKEN: | |
| 13976 | case R_PPC64_REL14_BRTAKEN: | |
| cedb70c5 KH |
13977 | insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */ |
| 13978 | /* Fall thru. */ | |
| 65f38f15 | 13979 | |
| 86c76c7b | 13980 | /* Branch not taken prediction relocations. */ |
| 65f38f15 AM |
13981 | case R_PPC64_ADDR14_BRNTAKEN: |
| 13982 | case R_PPC64_REL14_BRNTAKEN: | |
| 411e1bfb AM |
13983 | insn |= bfd_get_32 (output_bfd, |
| 13984 | contents + rel->r_offset) & ~(0x01 << 21); | |
| b25116a9 | 13985 | /* Fall thru. */ |
| 86c76c7b | 13986 | |
| b25116a9 AM |
13987 | case R_PPC64_REL14: |
| 13988 | max_br_offset = 1 << 15; | |
| 13989 | /* Fall thru. */ | |
| 5bd4f169 | 13990 | |
| 65f38f15 | 13991 | case R_PPC64_REL24: |
| ad8e1ba5 AM |
13992 | /* Calls to functions with a different TOC, such as calls to |
| 13993 | shared objects, need to alter the TOC pointer. This is | |
| 13994 | done using a linkage stub. A REL24 branching to these | |
| 13995 | linkage stubs needs to be followed by a nop, as the nop | |
| 13996 | will be replaced with an instruction to restore the TOC | |
| 13997 | base pointer. */ | |
| 8387904d | 13998 | fdh = h; |
| b31867b6 AM |
13999 | if (h != NULL |
| 14000 | && h->oh != NULL | |
| 14001 | && h->oh->is_func_descriptor) | |
| 14002 | fdh = ppc_follow_link (h->oh); | |
| 31c76678 DK |
14003 | stub_entry = ppc_get_stub_entry (input_section, sec, fdh, &orig_rel, |
| 14004 | htab); | |
| 6abec6bc | 14005 | if (stub_entry != NULL |
| ad8e1ba5 | 14006 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 794e51c0 | 14007 | || stub_entry->stub_type == ppc_stub_plt_call_r2save |
| ad8e1ba5 AM |
14008 | || stub_entry->stub_type == ppc_stub_plt_branch_r2off |
| 14009 | || stub_entry->stub_type == ppc_stub_long_branch_r2off)) | |
| 41bd81ab | 14010 | { |
| b25116a9 | 14011 | bfd_boolean can_plt_call = FALSE; |
| 721956f4 | 14012 | |
| ba8ca3e7 AM |
14013 | /* All of these stubs will modify r2, so there must be a |
| 14014 | branch and link followed by a nop. The nop is | |
| 14015 | replaced by an insn to restore r2. */ | |
| eea6121a | 14016 | if (rel->r_offset + 8 <= input_section->size) |
| 41bd81ab | 14017 | { |
| ba8ca3e7 AM |
14018 | unsigned long br; |
| 14019 | ||
| 14020 | br = bfd_get_32 (input_bfd, | |
| 14021 | contents + rel->r_offset); | |
| 14022 | if ((br & 1) != 0) | |
| 41bd81ab | 14023 | { |
| ba8ca3e7 AM |
14024 | unsigned long nop; |
| 14025 | ||
| 14026 | nop = bfd_get_32 (input_bfd, | |
| 14027 | contents + rel->r_offset + 4); | |
| 14028 | if (nop == NOP | |
| 14029 | || nop == CROR_151515 || nop == CROR_313131) | |
| a7f2871e | 14030 | { |
| ba8ca3e7 AM |
14031 | if (h != NULL |
| 14032 | && (h == htab->tls_get_addr_fd | |
| 14033 | || h == htab->tls_get_addr) | |
| 7c9cf415 | 14034 | && htab->params->tls_get_addr_opt) |
| ba8ca3e7 AM |
14035 | { |
| 14036 | /* Special stub used, leave nop alone. */ | |
| 14037 | } | |
| 14038 | else | |
| a078d95a AM |
14039 | bfd_put_32 (input_bfd, |
| 14040 | LD_R2_0R1 + STK_TOC (htab), | |
| ba8ca3e7 AM |
14041 | contents + rel->r_offset + 4); |
| 14042 | can_plt_call = TRUE; | |
| a7f2871e | 14043 | } |
| 41bd81ab | 14044 | } |
| 5bd4f169 | 14045 | } |
| 721956f4 | 14046 | |
| ba8ca3e7 | 14047 | if (!can_plt_call && h != NULL) |
| 721956f4 | 14048 | { |
| ba8ca3e7 AM |
14049 | const char *name = h->elf.root.root.string; |
| 14050 | ||
| 14051 | if (*name == '.') | |
| 14052 | ++name; | |
| 14053 | ||
| 14054 | if (strncmp (name, "__libc_start_main", 17) == 0 | |
| 14055 | && (name[17] == 0 || name[17] == '@')) | |
| 6ab189d5 | 14056 | { |
| ba8ca3e7 AM |
14057 | /* Allow crt1 branch to go via a toc adjusting |
| 14058 | stub. Other calls that never return could do | |
| 14059 | the same, if we could detect such. */ | |
| b25116a9 | 14060 | can_plt_call = TRUE; |
| 6ab189d5 | 14061 | } |
| ba8ca3e7 AM |
14062 | } |
| 14063 | ||
| 14064 | if (!can_plt_call) | |
| 14065 | { | |
| 14066 | /* g++ as of 20130507 emits self-calls without a | |
| 14067 | following nop. This is arguably wrong since we | |
| 14068 | have conflicting information. On the one hand a | |
| 14069 | global symbol and on the other a local call | |
| 14070 | sequence, but don't error for this special case. | |
| 14071 | It isn't possible to cheaply verify we have | |
| 14072 | exactly such a call. Allow all calls to the same | |
| 14073 | section. */ | |
| 14074 | asection *code_sec = sec; | |
| 14075 | ||
| 14076 | if (get_opd_info (sec) != NULL) | |
| ad8e1ba5 | 14077 | { |
| ba8ca3e7 AM |
14078 | bfd_vma off = (relocation + addend |
| 14079 | - sec->output_section->vma | |
| 14080 | - sec->output_offset); | |
| bc30df16 | 14081 | |
| ba8ca3e7 | 14082 | opd_entry_value (sec, off, &code_sec, NULL, FALSE); |
| ad8e1ba5 | 14083 | } |
| ba8ca3e7 AM |
14084 | if (code_sec == input_section) |
| 14085 | can_plt_call = TRUE; | |
| 14086 | } | |
| 14087 | ||
| 14088 | if (!can_plt_call) | |
| 14089 | { | |
| 4805fc55 AM |
14090 | if (stub_entry->stub_type == ppc_stub_plt_call |
| 14091 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 14092 | info->callbacks->einfo | |
| 14093 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
| 14094 | "recompile with -fPIC\n"), | |
| 14095 | input_bfd, input_section, rel->r_offset, sym_name); | |
| 14096 | else | |
| 14097 | info->callbacks->einfo | |
| 14098 | (_("%P: %H: call to `%T' lacks nop, can't restore toc; " | |
| 14099 | "(-mcmodel=small toc adjust stub)\n"), | |
| 14100 | input_bfd, input_section, rel->r_offset, sym_name); | |
| ba8ca3e7 AM |
14101 | |
| 14102 | bfd_set_error (bfd_error_bad_value); | |
| 14103 | ret = FALSE; | |
| 721956f4 AM |
14104 | } |
| 14105 | ||
| b25116a9 | 14106 | if (can_plt_call |
| 794e51c0 AM |
14107 | && (stub_entry->stub_type == ppc_stub_plt_call |
| 14108 | || stub_entry->stub_type == ppc_stub_plt_call_r2save)) | |
| b25116a9 AM |
14109 | unresolved_reloc = FALSE; |
| 14110 | } | |
| 14111 | ||
| 6abec6bc AM |
14112 | if ((stub_entry == NULL |
| 14113 | || stub_entry->stub_type == ppc_stub_long_branch | |
| 14114 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 8387904d AM |
14115 | && get_opd_info (sec) != NULL) |
| 14116 | { | |
| 14117 | /* The branch destination is the value of the opd entry. */ | |
| 4cc603a5 AM |
14118 | bfd_vma off = (relocation + addend |
| 14119 | - sec->output_section->vma | |
| 14120 | - sec->output_offset); | |
| aef36ac1 | 14121 | bfd_vma dest = opd_entry_value (sec, off, NULL, NULL, FALSE); |
| 8387904d AM |
14122 | if (dest != (bfd_vma) -1) |
| 14123 | { | |
| 14124 | relocation = dest; | |
| 14125 | addend = 0; | |
| bc30df16 | 14126 | reloc_dest = DEST_OPD; |
| 8387904d AM |
14127 | } |
| 14128 | } | |
| 14129 | ||
| b25116a9 AM |
14130 | /* If the branch is out of reach we ought to have a long |
| 14131 | branch stub. */ | |
| 14132 | from = (rel->r_offset | |
| 14133 | + input_section->output_offset | |
| 14134 | + input_section->output_section->vma); | |
| 14135 | ||
| 6911b7dc AM |
14136 | relocation += PPC64_LOCAL_ENTRY_OFFSET (fdh |
| 14137 | ? fdh->elf.other | |
| 14138 | : sym->st_other); | |
| 14139 | ||
| 6abec6bc AM |
14140 | if (stub_entry != NULL |
| 14141 | && (stub_entry->stub_type == ppc_stub_long_branch | |
| 14142 | || stub_entry->stub_type == ppc_stub_plt_branch) | |
| 14143 | && (r_type == R_PPC64_ADDR14_BRTAKEN | |
| 14144 | || r_type == R_PPC64_ADDR14_BRNTAKEN | |
| 14145 | || (relocation + addend - from + max_br_offset | |
| 14146 | < 2 * max_br_offset))) | |
| 14147 | /* Don't use the stub if this branch is in range. */ | |
| 14148 | stub_entry = NULL; | |
| b25116a9 AM |
14149 | |
| 14150 | if (stub_entry != NULL) | |
| 14151 | { | |
| 14152 | /* Munge up the value and addend so that we call the stub | |
| 14153 | rather than the procedure directly. */ | |
| a4b6fadd AM |
14154 | asection *stub_sec = stub_entry->group->stub_sec; |
| 14155 | ||
| 14156 | if (stub_entry->stub_type == ppc_stub_save_res) | |
| 14157 | relocation += (stub_sec->output_offset | |
| 14158 | + stub_sec->output_section->vma | |
| 14159 | + stub_sec->size - htab->sfpr->size | |
| 14160 | - htab->sfpr->output_offset | |
| 14161 | - htab->sfpr->output_section->vma); | |
| 14162 | else | |
| 14163 | relocation = (stub_entry->stub_offset | |
| 14164 | + stub_sec->output_offset | |
| 14165 | + stub_sec->output_section->vma); | |
| b25116a9 | 14166 | addend = 0; |
| bc30df16 | 14167 | reloc_dest = DEST_STUB; |
| 3b421ab3 | 14168 | |
| 794e51c0 AM |
14169 | if ((stub_entry->stub_type == ppc_stub_plt_call |
| 14170 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 14171 | && (ALWAYS_EMIT_R2SAVE | |
| 14172 | || stub_entry->stub_type == ppc_stub_plt_call_r2save) | |
| 3b421ab3 AM |
14173 | && rel + 1 < relend |
| 14174 | && rel[1].r_offset == rel->r_offset + 4 | |
| 14175 | && ELF64_R_TYPE (rel[1].r_info) == R_PPC64_TOCSAVE) | |
| 14176 | relocation += 4; | |
| b25116a9 AM |
14177 | } |
| 14178 | ||
| 14179 | if (insn != 0) | |
| 14180 | { | |
| 794e51c0 | 14181 | if (is_isa_v2) |
| 721956f4 | 14182 | { |
| b25116a9 AM |
14183 | /* Set 'a' bit. This is 0b00010 in BO field for branch |
| 14184 | on CR(BI) insns (BO == 001at or 011at), and 0b01000 | |
| 14185 | for branch on CTR insns (BO == 1a00t or 1a01t). */ | |
| 14186 | if ((insn & (0x14 << 21)) == (0x04 << 21)) | |
| 14187 | insn |= 0x02 << 21; | |
| 14188 | else if ((insn & (0x14 << 21)) == (0x10 << 21)) | |
| 14189 | insn |= 0x08 << 21; | |
| 14190 | else | |
| 14191 | break; | |
| 14192 | } | |
| 14193 | else | |
| 14194 | { | |
| 14195 | /* Invert 'y' bit if not the default. */ | |
| 4cc603a5 | 14196 | if ((bfd_signed_vma) (relocation + addend - from) < 0) |
| b25116a9 | 14197 | insn ^= 0x01 << 21; |
| 721956f4 | 14198 | } |
| b25116a9 AM |
14199 | |
| 14200 | bfd_put_32 (output_bfd, insn, contents + rel->r_offset); | |
| 5bd4f169 | 14201 | } |
| e86ce104 | 14202 | |
| 06da1e8e AM |
14203 | /* NOP out calls to undefined weak functions. |
| 14204 | We can thus call a weak function without first | |
| 14205 | checking whether the function is defined. */ | |
| b25116a9 | 14206 | else if (h != NULL |
| 039b3fef | 14207 | && h->elf.root.type == bfd_link_hash_undefweak |
| 766bc656 | 14208 | && h->elf.dynindx == -1 |
| b25116a9 AM |
14209 | && r_type == R_PPC64_REL24 |
| 14210 | && relocation == 0 | |
| 4cc603a5 | 14211 | && addend == 0) |
| e86ce104 | 14212 | { |
| 06da1e8e | 14213 | bfd_put_32 (output_bfd, NOP, contents + rel->r_offset); |
| c316a17c | 14214 | goto copy_reloc; |
| e86ce104 | 14215 | } |
| 65f38f15 AM |
14216 | break; |
| 14217 | } | |
| 5bd4f169 | 14218 | |
| 65f38f15 | 14219 | /* Set `addend'. */ |
| 411e1bfb | 14220 | tls_type = 0; |
| 65f38f15 AM |
14221 | switch (r_type) |
| 14222 | { | |
| 14223 | default: | |
| 25f53a85 | 14224 | info->callbacks->einfo |
| bc30df16 | 14225 | (_("%P: %B: unknown relocation type %d for `%T'\n"), |
| d003868e | 14226 | input_bfd, (int) r_type, sym_name); |
| 5bd4f169 | 14227 | |
| 65f38f15 | 14228 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 14229 | ret = FALSE; |
| c316a17c | 14230 | goto copy_reloc; |
| 5bd4f169 | 14231 | |
| 65f38f15 | 14232 | case R_PPC64_NONE: |
| 411e1bfb | 14233 | case R_PPC64_TLS: |
| 727fc41e AM |
14234 | case R_PPC64_TLSGD: |
| 14235 | case R_PPC64_TLSLD: | |
| 3b421ab3 | 14236 | case R_PPC64_TOCSAVE: |
| 04c9666a AM |
14237 | case R_PPC64_GNU_VTINHERIT: |
| 14238 | case R_PPC64_GNU_VTENTRY: | |
| 006589cf | 14239 | case R_PPC64_ENTRY: |
| c316a17c | 14240 | goto copy_reloc; |
| 5bd4f169 AM |
14241 | |
| 14242 | /* GOT16 relocations. Like an ADDR16 using the symbol's | |
| 14243 | address in the GOT as relocation value instead of the | |
| 411e1bfb | 14244 | symbol's value itself. Also, create a GOT entry for the |
| 5bd4f169 | 14245 | symbol and put the symbol value there. */ |
| 411e1bfb AM |
14246 | case R_PPC64_GOT_TLSGD16: |
| 14247 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14248 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14249 | case R_PPC64_GOT_TLSGD16_HA: | |
| 951fd09b | 14250 | tls_type = TLS_TLS | TLS_GD; |
| 411e1bfb AM |
14251 | goto dogot; |
| 14252 | ||
| 14253 | case R_PPC64_GOT_TLSLD16: | |
| 14254 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14255 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14256 | case R_PPC64_GOT_TLSLD16_HA: | |
| 951fd09b | 14257 | tls_type = TLS_TLS | TLS_LD; |
| 411e1bfb AM |
14258 | goto dogot; |
| 14259 | ||
| 14260 | case R_PPC64_GOT_TPREL16_DS: | |
| 14261 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14262 | case R_PPC64_GOT_TPREL16_HI: | |
| 14263 | case R_PPC64_GOT_TPREL16_HA: | |
| 14264 | tls_type = TLS_TLS | TLS_TPREL; | |
| 14265 | goto dogot; | |
| 14266 | ||
| 14267 | case R_PPC64_GOT_DTPREL16_DS: | |
| 14268 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14269 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14270 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14271 | tls_type = TLS_TLS | TLS_DTPREL; | |
| 14272 | goto dogot; | |
| 14273 | ||
| 65f38f15 AM |
14274 | case R_PPC64_GOT16: |
| 14275 | case R_PPC64_GOT16_LO: | |
| 14276 | case R_PPC64_GOT16_HI: | |
| 14277 | case R_PPC64_GOT16_HA: | |
| 14278 | case R_PPC64_GOT16_DS: | |
| 14279 | case R_PPC64_GOT16_LO_DS: | |
| 411e1bfb | 14280 | dogot: |
| 5bd4f169 AM |
14281 | { |
| 14282 | /* Relocation is to the entry for this symbol in the global | |
| 14283 | offset table. */ | |
| e717da7e | 14284 | asection *got; |
| d881513a | 14285 | bfd_vma *offp; |
| 5bd4f169 | 14286 | bfd_vma off; |
| d881513a | 14287 | unsigned long indx = 0; |
| 927be08e | 14288 | struct got_entry *ent; |
| 65f38f15 | 14289 | |
| d881513a AM |
14290 | if (tls_type == (TLS_TLS | TLS_LD) |
| 14291 | && (h == NULL | |
| f5385ebf | 14292 | || !h->elf.def_dynamic)) |
| 927be08e | 14293 | ent = ppc64_tlsld_got (input_bfd); |
| 411e1bfb | 14294 | else |
| 5bd4f169 | 14295 | { |
| 5bd4f169 | 14296 | |
| d881513a AM |
14297 | if (h != NULL) |
| 14298 | { | |
| 14299 | bfd_boolean dyn = htab->elf.dynamic_sections_created; | |
| 0e1862bb | 14300 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), |
| 039b3fef | 14301 | &h->elf) |
| 0e1862bb | 14302 | || (bfd_link_pic (info) |
| afe397ea | 14303 | && SYMBOL_REFERENCES_LOCAL (info, &h->elf))) |
| d881513a AM |
14304 | /* This is actually a static link, or it is a |
| 14305 | -Bsymbolic link and the symbol is defined | |
| 14306 | locally, or the symbol was forced to be local | |
| 14307 | because of a version file. */ | |
| 14308 | ; | |
| 14309 | else | |
| 14310 | { | |
| 14acf4dc | 14311 | BFD_ASSERT (h->elf.dynindx != -1); |
| 039b3fef | 14312 | indx = h->elf.dynindx; |
| d881513a AM |
14313 | unresolved_reloc = FALSE; |
| 14314 | } | |
| 039b3fef | 14315 | ent = h->elf.got.glist; |
| d881513a | 14316 | } |
| 411e1bfb | 14317 | else |
| 5bd4f169 | 14318 | { |
| d881513a AM |
14319 | if (local_got_ents == NULL) |
| 14320 | abort (); | |
| 14321 | ent = local_got_ents[r_symndx]; | |
| 5bd4f169 | 14322 | } |
| d881513a AM |
14323 | |
| 14324 | for (; ent != NULL; ent = ent->next) | |
| 31c76678 | 14325 | if (ent->addend == orig_rel.r_addend |
| e717da7e | 14326 | && ent->owner == input_bfd |
| d881513a AM |
14327 | && ent->tls_type == tls_type) |
| 14328 | break; | |
| 5bd4f169 | 14329 | } |
| 411e1bfb | 14330 | |
| 927be08e AM |
14331 | if (ent == NULL) |
| 14332 | abort (); | |
| 14333 | if (ent->is_indirect) | |
| 14334 | ent = ent->got.ent; | |
| 14335 | offp = &ent->got.offset; | |
| 14336 | got = ppc64_elf_tdata (ent->owner)->got; | |
| e717da7e AM |
14337 | if (got == NULL) |
| 14338 | abort (); | |
| 14339 | ||
| 411e1bfb AM |
14340 | /* The offset must always be a multiple of 8. We use the |
| 14341 | least significant bit to record whether we have already | |
| 14342 | processed this entry. */ | |
| d881513a | 14343 | off = *offp; |
| 411e1bfb AM |
14344 | if ((off & 1) != 0) |
| 14345 | off &= ~1; | |
| 5bd4f169 AM |
14346 | else |
| 14347 | { | |
| 411e1bfb AM |
14348 | /* Generate relocs for the dynamic linker, except in |
| 14349 | the case of TLSLD where we'll use one entry per | |
| 14350 | module. */ | |
| 25f23106 AM |
14351 | asection *relgot; |
| 14352 | bfd_boolean ifunc; | |
| e717da7e | 14353 | |
| d881513a | 14354 | *offp = off | 1; |
| 25f23106 AM |
14355 | relgot = NULL; |
| 14356 | ifunc = (h != NULL | |
| 14357 | ? h->elf.type == STT_GNU_IFUNC | |
| 14358 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC); | |
| 19e08130 | 14359 | if (ifunc) |
| 33e44f2e | 14360 | relgot = htab->elf.irelplt; |
| 0e1862bb | 14361 | else if ((bfd_link_pic (info) || indx != 0) |
| 19e08130 AM |
14362 | && (h == NULL |
| 14363 | || (tls_type == (TLS_TLS | TLS_LD) | |
| 14364 | && !h->elf.def_dynamic) | |
| 14365 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT | |
| 14366 | || h->elf.root.type != bfd_link_hash_undefweak)) | |
| 14367 | relgot = ppc64_elf_tdata (ent->owner)->relgot; | |
| 25f23106 | 14368 | if (relgot != NULL) |
| 5bd4f169 | 14369 | { |
| e717da7e AM |
14370 | outrel.r_offset = (got->output_section->vma |
| 14371 | + got->output_offset | |
| 411e1bfb | 14372 | + off); |
| 4cc603a5 | 14373 | outrel.r_addend = addend; |
| d881513a | 14374 | if (tls_type & (TLS_LD | TLS_GD)) |
| 5bd4f169 | 14375 | { |
| 411e1bfb | 14376 | outrel.r_addend = 0; |
| e515b051 | 14377 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPMOD64); |
| d881513a AM |
14378 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 14379 | { | |
| e717da7e AM |
14380 | loc = relgot->contents; |
| 14381 | loc += (relgot->reloc_count++ | |
| d881513a AM |
14382 | * sizeof (Elf64_External_Rela)); |
| 14383 | bfd_elf64_swap_reloca_out (output_bfd, | |
| 14384 | &outrel, loc); | |
| e515b051 | 14385 | outrel.r_offset += 8; |
| 4cc603a5 | 14386 | outrel.r_addend = addend; |
| d881513a AM |
14387 | outrel.r_info |
| 14388 | = ELF64_R_INFO (indx, R_PPC64_DTPREL64); | |
| d881513a | 14389 | } |
| 411e1bfb | 14390 | } |
| 951fd09b | 14391 | else if (tls_type == (TLS_TLS | TLS_DTPREL)) |
| 411e1bfb | 14392 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_DTPREL64); |
| 951fd09b | 14393 | else if (tls_type == (TLS_TLS | TLS_TPREL)) |
| 411e1bfb | 14394 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_TPREL64); |
| 25f23106 AM |
14395 | else if (indx != 0) |
| 14396 | outrel.r_info = ELF64_R_INFO (indx, R_PPC64_GLOB_DAT); | |
| 14397 | else | |
| 81407a69 | 14398 | { |
| 25f23106 AM |
14399 | if (ifunc) |
| 14400 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14401 | else | |
| 14402 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 AM |
14403 | |
| 14404 | /* Write the .got section contents for the sake | |
| 14405 | of prelink. */ | |
| e717da7e | 14406 | loc = got->contents + off; |
| 23fbd6fa JJ |
14407 | bfd_put_64 (output_bfd, outrel.r_addend + relocation, |
| 14408 | loc); | |
| 81407a69 | 14409 | } |
| 81407a69 AM |
14410 | |
| 14411 | if (indx == 0 && tls_type != (TLS_TLS | TLS_LD)) | |
| e515b051 AM |
14412 | { |
| 14413 | outrel.r_addend += relocation; | |
| 14414 | if (tls_type & (TLS_GD | TLS_DTPREL | TLS_TPREL)) | |
| 989f9879 AM |
14415 | { |
| 14416 | if (htab->elf.tls_sec == NULL) | |
| 14417 | outrel.r_addend = 0; | |
| 14418 | else | |
| 14419 | outrel.r_addend -= htab->elf.tls_sec->vma; | |
| 14420 | } | |
| e515b051 | 14421 | } |
| e717da7e AM |
14422 | loc = relgot->contents; |
| 14423 | loc += (relgot->reloc_count++ | |
| 411e1bfb AM |
14424 | * sizeof (Elf64_External_Rela)); |
| 14425 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); | |
| 14426 | } | |
| 14427 | ||
| ad8e1ba5 | 14428 | /* Init the .got section contents here if we're not |
| 81407a69 | 14429 | emitting a reloc. */ |
| d881513a | 14430 | else |
| 411e1bfb | 14431 | { |
| 4cc603a5 | 14432 | relocation += addend; |
| 7b609f53 AM |
14433 | if (tls_type == (TLS_TLS | TLS_LD)) |
| 14434 | relocation = 1; | |
| 14435 | else if (tls_type != 0) | |
| 411e1bfb | 14436 | { |
| 989f9879 AM |
14437 | if (htab->elf.tls_sec == NULL) |
| 14438 | relocation = 0; | |
| 14439 | else | |
| 14440 | { | |
| 14441 | relocation -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 14442 | if (tls_type == (TLS_TLS | TLS_TPREL)) | |
| 14443 | relocation += DTP_OFFSET - TP_OFFSET; | |
| 14444 | } | |
| 5bd4f169 | 14445 | |
| 7b609f53 AM |
14446 | if (tls_type == (TLS_TLS | TLS_GD)) |
| 14447 | { | |
| 14448 | bfd_put_64 (output_bfd, relocation, | |
| e717da7e | 14449 | got->contents + off + 8); |
| 7b609f53 AM |
14450 | relocation = 1; |
| 14451 | } | |
| 411e1bfb | 14452 | } |
| 7b609f53 | 14453 | |
| 411e1bfb | 14454 | bfd_put_64 (output_bfd, relocation, |
| e717da7e | 14455 | got->contents + off); |
| 5bd4f169 AM |
14456 | } |
| 14457 | } | |
| 14458 | ||
| 65f38f15 AM |
14459 | if (off >= (bfd_vma) -2) |
| 14460 | abort (); | |
| 14461 | ||
| bf102f86 | 14462 | relocation = got->output_section->vma + got->output_offset + off; |
| 6f20ed8a | 14463 | addend = -(TOCstart + htab->sec_info[input_section->id].toc_off); |
| 5bd4f169 | 14464 | } |
| 65f38f15 AM |
14465 | break; |
| 14466 | ||
| 14467 | case R_PPC64_PLT16_HA: | |
| 14468 | case R_PPC64_PLT16_HI: | |
| 14469 | case R_PPC64_PLT16_LO: | |
| 14470 | case R_PPC64_PLT32: | |
| 14471 | case R_PPC64_PLT64: | |
| 14472 | /* Relocation is to the entry for this symbol in the | |
| 14473 | procedure linkage table. */ | |
| cbf95972 AM |
14474 | { |
| 14475 | struct plt_entry **plt_list = NULL; | |
| 14476 | if (h != NULL) | |
| 14477 | plt_list = &h->elf.plt.plist; | |
| 14478 | else if (local_got_ents != NULL) | |
| 14479 | { | |
| 14480 | struct plt_entry **local_plt = (struct plt_entry **) | |
| 14481 | (local_got_ents + symtab_hdr->sh_info); | |
| 14482 | unsigned char *local_got_tls_masks = (unsigned char *) | |
| 14483 | (local_plt + symtab_hdr->sh_info); | |
| 14484 | if ((local_got_tls_masks[r_symndx] & PLT_IFUNC) != 0) | |
| 14485 | plt_list = local_plt + r_symndx; | |
| 14486 | } | |
| 14487 | if (plt_list) | |
| 14488 | { | |
| 14489 | struct plt_entry *ent; | |
| 65f38f15 | 14490 | |
| cbf95972 AM |
14491 | for (ent = *plt_list; ent != NULL; ent = ent->next) |
| 14492 | if (ent->plt.offset != (bfd_vma) -1 | |
| 14493 | && ent->addend == orig_rel.r_addend) | |
| 14494 | { | |
| 14495 | asection *plt; | |
| 14496 | ||
| 14497 | plt = htab->elf.splt; | |
| 14498 | if (!htab->elf.dynamic_sections_created | |
| 14499 | || h == NULL | |
| 14500 | || h->elf.dynindx == -1) | |
| 14501 | plt = htab->elf.iplt; | |
| 14502 | relocation = (plt->output_section->vma | |
| 14503 | + plt->output_offset | |
| 14504 | + ent->plt.offset); | |
| 14505 | addend = 0; | |
| 14506 | unresolved_reloc = FALSE; | |
| 14507 | break; | |
| 14508 | } | |
| 14509 | } | |
| 14510 | } | |
| 65f38f15 | 14511 | break; |
| 5bd4f169 | 14512 | |
| 0b13192e AM |
14513 | case R_PPC64_TOC: |
| 14514 | /* Relocation value is TOC base. */ | |
| 14515 | relocation = TOCstart; | |
| cf35638d | 14516 | if (r_symndx == STN_UNDEF) |
| 6f20ed8a | 14517 | relocation += htab->sec_info[input_section->id].toc_off; |
| 8517fae7 AM |
14518 | else if (unresolved_reloc) |
| 14519 | ; | |
| 6f20ed8a AM |
14520 | else if (sec != NULL && sec->id < htab->sec_info_arr_size) |
| 14521 | relocation += htab->sec_info[sec->id].toc_off; | |
| 0b13192e AM |
14522 | else |
| 14523 | unresolved_reloc = TRUE; | |
| ab96bf03 | 14524 | goto dodyn; |
| 0b13192e | 14525 | |
| 5bd4f169 AM |
14526 | /* TOC16 relocs. We want the offset relative to the TOC base, |
| 14527 | which is the address of the start of the TOC plus 0x8000. | |
| 14528 | The TOC consists of sections .got, .toc, .tocbss, and .plt, | |
| 14529 | in this order. */ | |
| 65f38f15 AM |
14530 | case R_PPC64_TOC16: |
| 14531 | case R_PPC64_TOC16_LO: | |
| 14532 | case R_PPC64_TOC16_HI: | |
| 14533 | case R_PPC64_TOC16_DS: | |
| 14534 | case R_PPC64_TOC16_LO_DS: | |
| 14535 | case R_PPC64_TOC16_HA: | |
| 6f20ed8a | 14536 | addend -= TOCstart + htab->sec_info[input_section->id].toc_off; |
| 5bd4f169 AM |
14537 | break; |
| 14538 | ||
| 14539 | /* Relocate against the beginning of the section. */ | |
| 65f38f15 AM |
14540 | case R_PPC64_SECTOFF: |
| 14541 | case R_PPC64_SECTOFF_LO: | |
| 14542 | case R_PPC64_SECTOFF_HI: | |
| 14543 | case R_PPC64_SECTOFF_DS: | |
| 14544 | case R_PPC64_SECTOFF_LO_DS: | |
| 14545 | case R_PPC64_SECTOFF_HA: | |
| 4ce794b7 | 14546 | if (sec != NULL) |
| 65f38f15 | 14547 | addend -= sec->output_section->vma; |
| 5bd4f169 AM |
14548 | break; |
| 14549 | ||
| 25f23106 AM |
14550 | case R_PPC64_REL16: |
| 14551 | case R_PPC64_REL16_LO: | |
| 14552 | case R_PPC64_REL16_HI: | |
| 14553 | case R_PPC64_REL16_HA: | |
| a680de9a | 14554 | case R_PPC64_REL16DX_HA: |
| 25f23106 AM |
14555 | break; |
| 14556 | ||
| 721956f4 AM |
14557 | case R_PPC64_REL14: |
| 14558 | case R_PPC64_REL14_BRNTAKEN: | |
| 14559 | case R_PPC64_REL14_BRTAKEN: | |
| 5d1634d7 AM |
14560 | case R_PPC64_REL24: |
| 14561 | break; | |
| 14562 | ||
| 411e1bfb AM |
14563 | case R_PPC64_TPREL16: |
| 14564 | case R_PPC64_TPREL16_LO: | |
| 14565 | case R_PPC64_TPREL16_HI: | |
| 14566 | case R_PPC64_TPREL16_HA: | |
| 14567 | case R_PPC64_TPREL16_DS: | |
| 14568 | case R_PPC64_TPREL16_LO_DS: | |
| f9c6b907 AM |
14569 | case R_PPC64_TPREL16_HIGH: |
| 14570 | case R_PPC64_TPREL16_HIGHA: | |
| 411e1bfb AM |
14571 | case R_PPC64_TPREL16_HIGHER: |
| 14572 | case R_PPC64_TPREL16_HIGHERA: | |
| 14573 | case R_PPC64_TPREL16_HIGHEST: | |
| 14574 | case R_PPC64_TPREL16_HIGHESTA: | |
| 766bc656 AM |
14575 | if (h != NULL |
| 14576 | && h->elf.root.type == bfd_link_hash_undefweak | |
| 14577 | && h->elf.dynindx == -1) | |
| 14578 | { | |
| 14579 | /* Make this relocation against an undefined weak symbol | |
| 14580 | resolve to zero. This is really just a tweak, since | |
| 14581 | code using weak externs ought to check that they are | |
| 14582 | defined before using them. */ | |
| 14583 | bfd_byte *p = contents + rel->r_offset - d_offset; | |
| 14584 | ||
| 14585 | insn = bfd_get_32 (output_bfd, p); | |
| 14586 | insn = _bfd_elf_ppc_at_tprel_transform (insn, 13); | |
| 14587 | if (insn != 0) | |
| 14588 | bfd_put_32 (output_bfd, insn, p); | |
| 14589 | break; | |
| 14590 | } | |
| 989f9879 AM |
14591 | if (htab->elf.tls_sec != NULL) |
| 14592 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
| 0e1862bb | 14593 | if (bfd_link_pic (info)) |
| 411e1bfb AM |
14594 | /* The TPREL16 relocs shouldn't really be used in shared |
| 14595 | libs as they will result in DT_TEXTREL being set, but | |
| 14596 | support them anyway. */ | |
| 14597 | goto dodyn; | |
| 14598 | break; | |
| 14599 | ||
| 14600 | case R_PPC64_DTPREL16: | |
| 14601 | case R_PPC64_DTPREL16_LO: | |
| 14602 | case R_PPC64_DTPREL16_HI: | |
| 14603 | case R_PPC64_DTPREL16_HA: | |
| 14604 | case R_PPC64_DTPREL16_DS: | |
| 14605 | case R_PPC64_DTPREL16_LO_DS: | |
| f9c6b907 AM |
14606 | case R_PPC64_DTPREL16_HIGH: |
| 14607 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb AM |
14608 | case R_PPC64_DTPREL16_HIGHER: |
| 14609 | case R_PPC64_DTPREL16_HIGHERA: | |
| 14610 | case R_PPC64_DTPREL16_HIGHEST: | |
| 14611 | case R_PPC64_DTPREL16_HIGHESTA: | |
| 989f9879 AM |
14612 | if (htab->elf.tls_sec != NULL) |
| 14613 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 411e1bfb AM |
14614 | break; |
| 14615 | ||
| 45965137 AM |
14616 | case R_PPC64_ADDR64_LOCAL: |
| 14617 | addend += PPC64_LOCAL_ENTRY_OFFSET (h != NULL | |
| 14618 | ? h->elf.other | |
| 14619 | : sym->st_other); | |
| 14620 | break; | |
| 14621 | ||
| e515b051 AM |
14622 | case R_PPC64_DTPMOD64: |
| 14623 | relocation = 1; | |
| 14624 | addend = 0; | |
| 14625 | goto dodyn; | |
| 14626 | ||
| 411e1bfb | 14627 | case R_PPC64_TPREL64: |
| 989f9879 AM |
14628 | if (htab->elf.tls_sec != NULL) |
| 14629 | addend -= htab->elf.tls_sec->vma + TP_OFFSET; | |
| 411e1bfb AM |
14630 | goto dodyn; |
| 14631 | ||
| 14632 | case R_PPC64_DTPREL64: | |
| 989f9879 AM |
14633 | if (htab->elf.tls_sec != NULL) |
| 14634 | addend -= htab->elf.tls_sec->vma + DTP_OFFSET; | |
| 411e1bfb AM |
14635 | /* Fall thru */ |
| 14636 | ||
| 65f38f15 AM |
14637 | /* Relocations that may need to be propagated if this is a |
| 14638 | dynamic object. */ | |
| 04c9666a | 14639 | case R_PPC64_REL30: |
| 65f38f15 AM |
14640 | case R_PPC64_REL32: |
| 14641 | case R_PPC64_REL64: | |
| 14642 | case R_PPC64_ADDR14: | |
| 14643 | case R_PPC64_ADDR14_BRNTAKEN: | |
| 14644 | case R_PPC64_ADDR14_BRTAKEN: | |
| 14645 | case R_PPC64_ADDR16: | |
| 14646 | case R_PPC64_ADDR16_DS: | |
| 14647 | case R_PPC64_ADDR16_HA: | |
| 14648 | case R_PPC64_ADDR16_HI: | |
| f9c6b907 AM |
14649 | case R_PPC64_ADDR16_HIGH: |
| 14650 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14651 | case R_PPC64_ADDR16_HIGHER: |
| 14652 | case R_PPC64_ADDR16_HIGHERA: | |
| 14653 | case R_PPC64_ADDR16_HIGHEST: | |
| 14654 | case R_PPC64_ADDR16_HIGHESTA: | |
| 14655 | case R_PPC64_ADDR16_LO: | |
| 14656 | case R_PPC64_ADDR16_LO_DS: | |
| 14657 | case R_PPC64_ADDR24: | |
| 65f38f15 AM |
14658 | case R_PPC64_ADDR32: |
| 14659 | case R_PPC64_ADDR64: | |
| 14660 | case R_PPC64_UADDR16: | |
| 14661 | case R_PPC64_UADDR32: | |
| 14662 | case R_PPC64_UADDR64: | |
| 411e1bfb | 14663 | dodyn: |
| 5d1634d7 | 14664 | if ((input_section->flags & SEC_ALLOC) == 0) |
| ec338859 AM |
14665 | break; |
| 14666 | ||
| 41bd81ab AM |
14667 | if (NO_OPD_RELOCS && is_opd) |
| 14668 | break; | |
| 14669 | ||
| 0e1862bb | 14670 | if ((bfd_link_pic (info) |
| 4e795f50 | 14671 | && (h == NULL |
| 039b3fef AM |
14672 | || ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT |
| 14673 | || h->elf.root.type != bfd_link_hash_undefweak) | |
| 1d483afe | 14674 | && (must_be_dyn_reloc (info, r_type) |
| 039b3fef | 14675 | || !SYMBOL_CALLS_LOCAL (info, &h->elf))) |
| f4656909 | 14676 | || (ELIMINATE_COPY_RELOCS |
| 0e1862bb | 14677 | && !bfd_link_pic (info) |
| 65f38f15 | 14678 | && h != NULL |
| 039b3fef | 14679 | && h->elf.dynindx != -1 |
| f5385ebf | 14680 | && !h->elf.non_got_ref |
| 25f23106 | 14681 | && !h->elf.def_regular) |
| 0e1862bb | 14682 | || (!bfd_link_pic (info) |
| 25f23106 AM |
14683 | && (h != NULL |
| 14684 | ? h->elf.type == STT_GNU_IFUNC | |
| 14685 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC))) | |
| 65f38f15 | 14686 | { |
| b34976b6 | 14687 | bfd_boolean skip, relocate; |
| 65f38f15 | 14688 | asection *sreloc; |
| 1cf1f670 | 14689 | bfd_vma out_off; |
| 65f38f15 AM |
14690 | |
| 14691 | /* When generating a dynamic object, these relocations | |
| 14692 | are copied into the output file to be resolved at run | |
| 14693 | time. */ | |
| 14694 | ||
| b34976b6 AM |
14695 | skip = FALSE; |
| 14696 | relocate = FALSE; | |
| 65f38f15 | 14697 | |
| 1cf1f670 AM |
14698 | out_off = _bfd_elf_section_offset (output_bfd, info, |
| 14699 | input_section, rel->r_offset); | |
| 14700 | if (out_off == (bfd_vma) -1) | |
| b34976b6 | 14701 | skip = TRUE; |
| 1cf1f670 | 14702 | else if (out_off == (bfd_vma) -2) |
| b34976b6 | 14703 | skip = TRUE, relocate = TRUE; |
| 1cf1f670 AM |
14704 | out_off += (input_section->output_section->vma |
| 14705 | + input_section->output_offset); | |
| 14706 | outrel.r_offset = out_off; | |
| 411e1bfb | 14707 | outrel.r_addend = rel->r_addend; |
| 65f38f15 | 14708 | |
| 1cf1f670 AM |
14709 | /* Optimize unaligned reloc use. */ |
| 14710 | if ((r_type == R_PPC64_ADDR64 && (out_off & 7) != 0) | |
| 14711 | || (r_type == R_PPC64_UADDR64 && (out_off & 7) == 0)) | |
| 14712 | r_type ^= R_PPC64_ADDR64 ^ R_PPC64_UADDR64; | |
| 14713 | else if ((r_type == R_PPC64_ADDR32 && (out_off & 3) != 0) | |
| 14714 | || (r_type == R_PPC64_UADDR32 && (out_off & 3) == 0)) | |
| 14715 | r_type ^= R_PPC64_ADDR32 ^ R_PPC64_UADDR32; | |
| 14716 | else if ((r_type == R_PPC64_ADDR16 && (out_off & 1) != 0) | |
| 14717 | || (r_type == R_PPC64_UADDR16 && (out_off & 1) == 0)) | |
| 14718 | r_type ^= R_PPC64_ADDR16 ^ R_PPC64_UADDR16; | |
| 14719 | ||
| 65f38f15 | 14720 | if (skip) |
| 0bb2d96a | 14721 | memset (&outrel, 0, sizeof outrel); |
| afe397ea | 14722 | else if (!SYMBOL_REFERENCES_LOCAL (info, &h->elf) |
| 0b13192e AM |
14723 | && !is_opd |
| 14724 | && r_type != R_PPC64_TOC) | |
| 14acf4dc MR |
14725 | { |
| 14726 | BFD_ASSERT (h->elf.dynindx != -1); | |
| 14727 | outrel.r_info = ELF64_R_INFO (h->elf.dynindx, r_type); | |
| 14728 | } | |
| 65f38f15 AM |
14729 | else |
| 14730 | { | |
| 41bd81ab AM |
14731 | /* This symbol is local, or marked to become local, |
| 14732 | or this is an opd section reloc which must point | |
| 14733 | at a local function. */ | |
| 65f38f15 | 14734 | outrel.r_addend += relocation; |
| e86ce104 | 14735 | if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC) |
| 65f38f15 | 14736 | { |
| 3fad3c7c | 14737 | if (is_opd && h != NULL) |
| afbe61cf AM |
14738 | { |
| 14739 | /* Lie about opd entries. This case occurs | |
| 14740 | when building shared libraries and we | |
| 14741 | reference a function in another shared | |
| 3fad3c7c AM |
14742 | lib. The same thing happens for a weak |
| 14743 | definition in an application that's | |
| 14744 | overridden by a strong definition in a | |
| 14745 | shared lib. (I believe this is a generic | |
| 14746 | bug in binutils handling of weak syms.) | |
| 14747 | In these cases we won't use the opd | |
| 1e2f5b6e | 14748 | entry in this lib. */ |
| b34976b6 | 14749 | unresolved_reloc = FALSE; |
| afbe61cf | 14750 | } |
| 25f23106 AM |
14751 | if (!is_opd |
| 14752 | && r_type == R_PPC64_ADDR64 | |
| 14753 | && (h != NULL | |
| 14754 | ? h->elf.type == STT_GNU_IFUNC | |
| 14755 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC)) | |
| 14756 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| 14757 | else | |
| 14758 | { | |
| 14759 | outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE); | |
| 81407a69 | 14760 | |
| 25f23106 AM |
14761 | /* We need to relocate .opd contents for ld.so. |
| 14762 | Prelink also wants simple and consistent rules | |
| 14763 | for relocs. This make all RELATIVE relocs have | |
| 14764 | *r_offset equal to r_addend. */ | |
| 14765 | relocate = TRUE; | |
| 14766 | } | |
| 65f38f15 AM |
14767 | } |
| 14768 | else | |
| 14769 | { | |
| 14770 | long indx = 0; | |
| 14771 | ||
| 25f23106 AM |
14772 | if (h != NULL |
| 14773 | ? h->elf.type == STT_GNU_IFUNC | |
| 14774 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 14775 | { | |
| 25f53a85 | 14776 | info->callbacks->einfo |
| bc30df16 AM |
14777 | (_("%P: %H: %s for indirect " |
| 14778 | "function `%T' unsupported\n"), | |
| 25f53a85 | 14779 | input_bfd, input_section, rel->r_offset, |
| 25f23106 AM |
14780 | ppc64_elf_howto_table[r_type]->name, |
| 14781 | sym_name); | |
| 14782 | ret = FALSE; | |
| 14783 | } | |
| cf35638d | 14784 | else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) |
| 65f38f15 AM |
14785 | ; |
| 14786 | else if (sec == NULL || sec->owner == NULL) | |
| 14787 | { | |
| 14788 | bfd_set_error (bfd_error_bad_value); | |
| b34976b6 | 14789 | return FALSE; |
| 65f38f15 AM |
14790 | } |
| 14791 | else | |
| 14792 | { | |
| 14793 | asection *osec; | |
| 14794 | ||
| 14795 | osec = sec->output_section; | |
| 14796 | indx = elf_section_data (osec)->dynindx; | |
| 14797 | ||
| 74541ad4 AM |
14798 | if (indx == 0) |
| 14799 | { | |
| 14800 | if ((osec->flags & SEC_READONLY) == 0 | |
| 14801 | && htab->elf.data_index_section != NULL) | |
| 14802 | osec = htab->elf.data_index_section; | |
| 14803 | else | |
| 14804 | osec = htab->elf.text_index_section; | |
| 14805 | indx = elf_section_data (osec)->dynindx; | |
| 14806 | } | |
| 14807 | BFD_ASSERT (indx != 0); | |
| 14808 | ||
| 65f38f15 AM |
14809 | /* We are turning this relocation into one |
| 14810 | against a section symbol, so subtract out | |
| 14811 | the output section's address but not the | |
| 14812 | offset of the input section in the output | |
| 14813 | section. */ | |
| 14814 | outrel.r_addend -= osec->vma; | |
| 14815 | } | |
| 14816 | ||
| 14817 | outrel.r_info = ELF64_R_INFO (indx, r_type); | |
| 14818 | } | |
| 14819 | } | |
| 14820 | ||
| 14821 | sreloc = elf_section_data (input_section)->sreloc; | |
| 19e08130 AM |
14822 | if (h != NULL |
| 14823 | ? h->elf.type == STT_GNU_IFUNC | |
| 14824 | : ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
| 33e44f2e | 14825 | sreloc = htab->elf.irelplt; |
| 65f38f15 AM |
14826 | if (sreloc == NULL) |
| 14827 | abort (); | |
| 14828 | ||
| dfbb6ac9 AM |
14829 | if (sreloc->reloc_count * sizeof (Elf64_External_Rela) |
| 14830 | >= sreloc->size) | |
| 14831 | abort (); | |
| 947216bf AM |
14832 | loc = sreloc->contents; |
| 14833 | loc += sreloc->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 AM |
14834 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc); |
| 14835 | ||
| 14836 | /* If this reloc is against an external symbol, it will | |
| 14837 | be computed at runtime, so there's no need to do | |
| 81407a69 AM |
14838 | anything now. However, for the sake of prelink ensure |
| 14839 | that the section contents are a known value. */ | |
| 65f38f15 | 14840 | if (! relocate) |
| 81407a69 AM |
14841 | { |
| 14842 | unresolved_reloc = FALSE; | |
| 14843 | /* The value chosen here is quite arbitrary as ld.so | |
| 14844 | ignores section contents except for the special | |
| 14845 | case of .opd where the contents might be accessed | |
| 14846 | before relocation. Choose zero, as that won't | |
| 14847 | cause reloc overflow. */ | |
| 14848 | relocation = 0; | |
| 14849 | addend = 0; | |
| 14850 | /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs | |
| 14851 | to improve backward compatibility with older | |
| 14852 | versions of ld. */ | |
| 14853 | if (r_type == R_PPC64_ADDR64) | |
| 14854 | addend = outrel.r_addend; | |
| 14855 | /* Adjust pc_relative relocs to have zero in *r_offset. */ | |
| 4ce794b7 | 14856 | else if (ppc64_elf_howto_table[r_type]->pc_relative) |
| 000732f7 AM |
14857 | addend = (input_section->output_section->vma |
| 14858 | + input_section->output_offset | |
| 14859 | + rel->r_offset); | |
| 81407a69 | 14860 | } |
| 65f38f15 | 14861 | } |
| 5bd4f169 AM |
14862 | break; |
| 14863 | ||
| 65f38f15 AM |
14864 | case R_PPC64_COPY: |
| 14865 | case R_PPC64_GLOB_DAT: | |
| 14866 | case R_PPC64_JMP_SLOT: | |
| 25f23106 | 14867 | case R_PPC64_JMP_IREL: |
| 65f38f15 AM |
14868 | case R_PPC64_RELATIVE: |
| 14869 | /* We shouldn't ever see these dynamic relocs in relocatable | |
| 14870 | files. */ | |
| ae9a127f | 14871 | /* Fall through. */ |
| 65f38f15 AM |
14872 | |
| 14873 | case R_PPC64_PLTGOT16: | |
| 14874 | case R_PPC64_PLTGOT16_DS: | |
| 14875 | case R_PPC64_PLTGOT16_HA: | |
| 14876 | case R_PPC64_PLTGOT16_HI: | |
| 14877 | case R_PPC64_PLTGOT16_LO: | |
| 14878 | case R_PPC64_PLTGOT16_LO_DS: | |
| 14879 | case R_PPC64_PLTREL32: | |
| 14880 | case R_PPC64_PLTREL64: | |
| 14881 | /* These ones haven't been implemented yet. */ | |
| 14882 | ||
| 25f53a85 | 14883 | info->callbacks->einfo |
| bc30df16 | 14884 | (_("%P: %B: %s is not supported for `%T'\n"), |
| d003868e | 14885 | input_bfd, |
| 4ce794b7 | 14886 | ppc64_elf_howto_table[r_type]->name, sym_name); |
| 5bd4f169 AM |
14887 | |
| 14888 | bfd_set_error (bfd_error_invalid_operation); | |
| b34976b6 | 14889 | ret = FALSE; |
| c316a17c | 14890 | goto copy_reloc; |
| 65f38f15 | 14891 | } |
| 5bd4f169 | 14892 | |
| 67f0cbdb AM |
14893 | /* Multi-instruction sequences that access the TOC can be |
| 14894 | optimized, eg. addis ra,r2,0; addi rb,ra,x; | |
| 14895 | to nop; addi rb,r2,x; */ | |
| 14896 | switch (r_type) | |
| 14897 | { | |
| 14898 | default: | |
| 14899 | break; | |
| 14900 | ||
| 14901 | case R_PPC64_GOT_TLSLD16_HI: | |
| 14902 | case R_PPC64_GOT_TLSGD16_HI: | |
| 14903 | case R_PPC64_GOT_TPREL16_HI: | |
| 14904 | case R_PPC64_GOT_DTPREL16_HI: | |
| 14905 | case R_PPC64_GOT16_HI: | |
| 14906 | case R_PPC64_TOC16_HI: | |
| 14907 | /* These relocs would only be useful if building up an | |
| 14908 | offset to later add to r2, perhaps in an indexed | |
| 14909 | addressing mode instruction. Don't try to optimize. | |
| 14910 | Unfortunately, the possibility of someone building up an | |
| 14911 | offset like this or even with the HA relocs, means that | |
| 14912 | we need to check the high insn when optimizing the low | |
| 14913 | insn. */ | |
| 14914 | break; | |
| 14915 | ||
| 14916 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14917 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14918 | case R_PPC64_GOT_TPREL16_HA: | |
| 14919 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14920 | case R_PPC64_GOT16_HA: | |
| 14921 | case R_PPC64_TOC16_HA: | |
| 98528052 | 14922 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14923 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 98528052 AM |
14924 | { |
| 14925 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14926 | bfd_put_32 (input_bfd, NOP, p); | |
| 14927 | } | |
| 67f0cbdb AM |
14928 | break; |
| 14929 | ||
| 14930 | case R_PPC64_GOT_TLSLD16_LO: | |
| 14931 | case R_PPC64_GOT_TLSGD16_LO: | |
| 14932 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 14933 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 14934 | case R_PPC64_GOT16_LO: | |
| 14935 | case R_PPC64_GOT16_LO_DS: | |
| 14936 | case R_PPC64_TOC16_LO: | |
| 14937 | case R_PPC64_TOC16_LO_DS: | |
| 98528052 | 14938 | if (htab->do_toc_opt && relocation + addend + 0x8000 < 0x10000 |
| 560c8763 | 14939 | && !ppc64_elf_tdata (input_bfd)->unexpected_toc_insn) |
| 67f0cbdb AM |
14940 | { |
| 14941 | bfd_byte *p = contents + (rel->r_offset & ~3); | |
| 14942 | insn = bfd_get_32 (input_bfd, p); | |
| 560c8763 AM |
14943 | if ((insn & (0x3f << 26)) == 12u << 26 /* addic */) |
| 14944 | { | |
| 14945 | /* Transform addic to addi when we change reg. */ | |
| 14946 | insn &= ~((0x3f << 26) | (0x1f << 16)); | |
| 14947 | insn |= (14u << 26) | (2 << 16); | |
| 14948 | } | |
| 14949 | else | |
| 67f0cbdb | 14950 | { |
| 98528052 AM |
14951 | insn &= ~(0x1f << 16); |
| 14952 | insn |= 2 << 16; | |
| 67f0cbdb | 14953 | } |
| 560c8763 | 14954 | bfd_put_32 (input_bfd, insn, p); |
| 67f0cbdb AM |
14955 | } |
| 14956 | break; | |
| 14957 | } | |
| 14958 | ||
| 65f38f15 | 14959 | /* Do any further special processing. */ |
| b80eed39 | 14960 | howto = ppc64_elf_howto_table[(int) r_type]; |
| 65f38f15 AM |
14961 | switch (r_type) |
| 14962 | { | |
| 14963 | default: | |
| 14964 | break; | |
| 14965 | ||
| 25f23106 | 14966 | case R_PPC64_REL16_HA: |
| a680de9a | 14967 | case R_PPC64_REL16DX_HA: |
| f9c6b907 AM |
14968 | case R_PPC64_ADDR16_HA: |
| 14969 | case R_PPC64_ADDR16_HIGHA: | |
| 65f38f15 AM |
14970 | case R_PPC64_ADDR16_HIGHERA: |
| 14971 | case R_PPC64_ADDR16_HIGHESTA: | |
| 65f38f15 AM |
14972 | case R_PPC64_TOC16_HA: |
| 14973 | case R_PPC64_SECTOFF_HA: | |
| 411e1bfb | 14974 | case R_PPC64_TPREL16_HA: |
| f9c6b907 | 14975 | case R_PPC64_TPREL16_HIGHA: |
| 411e1bfb | 14976 | case R_PPC64_TPREL16_HIGHERA: |
| 411e1bfb | 14977 | case R_PPC64_TPREL16_HIGHESTA: |
| f9c6b907 AM |
14978 | case R_PPC64_DTPREL16_HA: |
| 14979 | case R_PPC64_DTPREL16_HIGHA: | |
| 411e1bfb | 14980 | case R_PPC64_DTPREL16_HIGHERA: |
| 411e1bfb | 14981 | case R_PPC64_DTPREL16_HIGHESTA: |
| 65f38f15 AM |
14982 | /* It's just possible that this symbol is a weak symbol |
| 14983 | that's not actually defined anywhere. In that case, | |
| 14984 | 'sec' would be NULL, and we should leave the symbol | |
| 14985 | alone (it will be set to zero elsewhere in the link). */ | |
| 5c5f6e17 AM |
14986 | if (sec == NULL) |
| 14987 | break; | |
| 14988 | /* Fall thru */ | |
| 14989 | ||
| 14990 | case R_PPC64_GOT16_HA: | |
| 14991 | case R_PPC64_PLTGOT16_HA: | |
| 14992 | case R_PPC64_PLT16_HA: | |
| 14993 | case R_PPC64_GOT_TLSGD16_HA: | |
| 14994 | case R_PPC64_GOT_TLSLD16_HA: | |
| 14995 | case R_PPC64_GOT_TPREL16_HA: | |
| 14996 | case R_PPC64_GOT_DTPREL16_HA: | |
| 14997 | /* Add 0x10000 if sign bit in 0:15 is set. | |
| 14998 | Bits 0:15 are not used. */ | |
| 14999 | addend += 0x8000; | |
| 65f38f15 AM |
15000 | break; |
| 15001 | ||
| 15002 | case R_PPC64_ADDR16_DS: | |
| 15003 | case R_PPC64_ADDR16_LO_DS: | |
| 15004 | case R_PPC64_GOT16_DS: | |
| 15005 | case R_PPC64_GOT16_LO_DS: | |
| 15006 | case R_PPC64_PLT16_LO_DS: | |
| 15007 | case R_PPC64_SECTOFF_DS: | |
| 15008 | case R_PPC64_SECTOFF_LO_DS: | |
| 15009 | case R_PPC64_TOC16_DS: | |
| 15010 | case R_PPC64_TOC16_LO_DS: | |
| 15011 | case R_PPC64_PLTGOT16_DS: | |
| 15012 | case R_PPC64_PLTGOT16_LO_DS: | |
| 411e1bfb AM |
15013 | case R_PPC64_GOT_TPREL16_DS: |
| 15014 | case R_PPC64_GOT_TPREL16_LO_DS: | |
| 15015 | case R_PPC64_GOT_DTPREL16_DS: | |
| 15016 | case R_PPC64_GOT_DTPREL16_LO_DS: | |
| 15017 | case R_PPC64_TPREL16_DS: | |
| 15018 | case R_PPC64_TPREL16_LO_DS: | |
| 15019 | case R_PPC64_DTPREL16_DS: | |
| 15020 | case R_PPC64_DTPREL16_LO_DS: | |
| adadcc0c AM |
15021 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); |
| 15022 | mask = 3; | |
| a680de9a PB |
15023 | /* If this reloc is against an lq, lxv, or stxv insn, then |
| 15024 | the value must be a multiple of 16. This is somewhat of | |
| 15025 | a hack, but the "correct" way to do this by defining _DQ | |
| 15026 | forms of all the _DS relocs bloats all reloc switches in | |
| 15027 | this file. It doesn't make much sense to use these | |
| 15028 | relocs in data, so testing the insn should be safe. */ | |
| 15029 | if ((insn & (0x3f << 26)) == (56u << 26) | |
| 15030 | || ((insn & (0x3f << 26)) == (61u << 26) && (insn & 3) == 1)) | |
| adadcc0c | 15031 | mask = 15; |
| a680de9a PB |
15032 | relocation += addend; |
| 15033 | addend = insn & (mask ^ 3); | |
| 15034 | if ((relocation & mask) != 0) | |
| 65f38f15 | 15035 | { |
| a680de9a | 15036 | relocation ^= relocation & mask; |
| 25f53a85 | 15037 | info->callbacks->einfo |
| 8de848d8 | 15038 | (_("%P: %H: error: %s not a multiple of %u\n"), |
| 25f53a85 | 15039 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 15040 | howto->name, |
| adadcc0c | 15041 | mask + 1); |
| 65f38f15 | 15042 | bfd_set_error (bfd_error_bad_value); |
| b34976b6 | 15043 | ret = FALSE; |
| c316a17c | 15044 | goto copy_reloc; |
| 65f38f15 AM |
15045 | } |
| 15046 | break; | |
| 5bd4f169 AM |
15047 | } |
| 15048 | ||
| 239e1f3a AM |
15049 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections |
| 15050 | because such sections are not SEC_ALLOC and thus ld.so will | |
| 15051 | not process them. */ | |
| 65f38f15 | 15052 | if (unresolved_reloc |
| 239e1f3a | 15053 | && !((input_section->flags & SEC_DEBUGGING) != 0 |
| 1d5316ab AM |
15054 | && h->elf.def_dynamic) |
| 15055 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
| 15056 | rel->r_offset) != (bfd_vma) -1) | |
| 9c07fe7c | 15057 | { |
| 25f53a85 | 15058 | info->callbacks->einfo |
| bc30df16 | 15059 | (_("%P: %H: unresolvable %s against `%T'\n"), |
| 25f53a85 | 15060 | input_bfd, input_section, rel->r_offset, |
| b80eed39 | 15061 | howto->name, |
| 039b3fef | 15062 | h->elf.root.root.string); |
| b34976b6 | 15063 | ret = FALSE; |
| 9c07fe7c | 15064 | } |
| 5bd4f169 | 15065 | |
| b80eed39 AM |
15066 | /* 16-bit fields in insns mostly have signed values, but a |
| 15067 | few insns have 16-bit unsigned values. Really, we should | |
| 15068 | have different reloc types. */ | |
| 15069 | if (howto->complain_on_overflow != complain_overflow_dont | |
| 15070 | && howto->dst_mask == 0xffff | |
| 15071 | && (input_section->flags & SEC_CODE) != 0) | |
| 15072 | { | |
| 15073 | enum complain_overflow complain = complain_overflow_signed; | |
| 15074 | ||
| 15075 | insn = bfd_get_32 (input_bfd, contents + (rel->r_offset & ~3)); | |
| a47622ac AM |
15076 | if ((insn & (0x3f << 26)) == 10u << 26 /* cmpli */) |
| 15077 | complain = complain_overflow_bitfield; | |
| 15078 | else if (howto->rightshift == 0 | |
| 15079 | ? ((insn & (0x3f << 26)) == 28u << 26 /* andi */ | |
| 15080 | || (insn & (0x3f << 26)) == 24u << 26 /* ori */ | |
| 15081 | || (insn & (0x3f << 26)) == 26u << 26 /* xori */) | |
| 15082 | : ((insn & (0x3f << 26)) == 29u << 26 /* andis */ | |
| 15083 | || (insn & (0x3f << 26)) == 25u << 26 /* oris */ | |
| 15084 | || (insn & (0x3f << 26)) == 27u << 26 /* xoris */)) | |
| b80eed39 AM |
15085 | complain = complain_overflow_unsigned; |
| 15086 | if (howto->complain_on_overflow != complain) | |
| 15087 | { | |
| 15088 | alt_howto = *howto; | |
| 15089 | alt_howto.complain_on_overflow = complain; | |
| 15090 | howto = &alt_howto; | |
| 15091 | } | |
| 15092 | } | |
| 15093 | ||
| a680de9a PB |
15094 | if (r_type == R_PPC64_REL16DX_HA) |
| 15095 | { | |
| 15096 | /* Split field reloc isn't handled by _bfd_final_link_relocate. */ | |
| 15097 | if (rel->r_offset + 4 > input_section->size) | |
| 15098 | r = bfd_reloc_outofrange; | |
| 15099 | else | |
| 15100 | { | |
| 15101 | relocation += addend; | |
| 15102 | relocation -= (rel->r_offset | |
| 15103 | + input_section->output_offset | |
| 15104 | + input_section->output_section->vma); | |
| 15105 | relocation = (bfd_signed_vma) relocation >> 16; | |
| 15106 | insn = bfd_get_32 (input_bfd, contents + rel->r_offset); | |
| 15107 | insn &= ~0x1fffc1; | |
| 15108 | insn |= (relocation & 0xffc1) | ((relocation & 0x3e) << 15); | |
| 15109 | bfd_put_32 (input_bfd, insn, contents + rel->r_offset); | |
| 15110 | r = bfd_reloc_ok; | |
| 15111 | if (relocation + 0x8000 > 0xffff) | |
| 15112 | r = bfd_reloc_overflow; | |
| 15113 | } | |
| 15114 | } | |
| 15115 | else | |
| 15116 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, contents, | |
| 15117 | rel->r_offset, relocation, addend); | |
| 5bd4f169 | 15118 | |
| ef60b7ff | 15119 | if (r != bfd_reloc_ok) |
| 5bd4f169 | 15120 | { |
| bc30df16 | 15121 | char *more_info = NULL; |
| b80eed39 | 15122 | const char *reloc_name = howto->name; |
| bc30df16 AM |
15123 | |
| 15124 | if (reloc_dest != DEST_NORMAL) | |
| 15125 | { | |
| 15126 | more_info = bfd_malloc (strlen (reloc_name) + 8); | |
| 15127 | if (more_info != NULL) | |
| 15128 | { | |
| 15129 | strcpy (more_info, reloc_name); | |
| 15130 | strcat (more_info, (reloc_dest == DEST_OPD | |
| 15131 | ? " (OPD)" : " (stub)")); | |
| 15132 | reloc_name = more_info; | |
| 15133 | } | |
| 15134 | } | |
| 15135 | ||
| cd27b276 | 15136 | if (r == bfd_reloc_overflow) |
| 5bd4f169 | 15137 | { |
| 8131c122 AM |
15138 | /* On code like "if (foo) foo();" don't report overflow |
| 15139 | on a branch to zero when foo is undefined. */ | |
| 15140 | if (!warned | |
| 15141 | && (reloc_dest == DEST_STUB | |
| 15142 | || !(h != NULL | |
| 15143 | && (h->elf.root.type == bfd_link_hash_undefweak | |
| 15144 | || h->elf.root.type == bfd_link_hash_undefined) | |
| 15145 | && is_branch_reloc (r_type)))) | |
| 5bd4f169 | 15146 | { |
| 8131c122 AM |
15147 | if (!((*info->callbacks->reloc_overflow) |
| 15148 | (info, &h->elf.root, sym_name, | |
| 15149 | reloc_name, orig_rel.r_addend, | |
| 15150 | input_bfd, input_section, rel->r_offset))) | |
| 15151 | return FALSE; | |
| 5bd4f169 | 15152 | } |
| ef60b7ff AM |
15153 | } |
| 15154 | else | |
| 15155 | { | |
| 25f53a85 | 15156 | info->callbacks->einfo |
| bc30df16 | 15157 | (_("%P: %H: %s against `%T': error %d\n"), |
| 25f53a85 | 15158 | input_bfd, input_section, rel->r_offset, |
| bc30df16 | 15159 | reloc_name, sym_name, (int) r); |
| b34976b6 | 15160 | ret = FALSE; |
| ef60b7ff | 15161 | } |
| bc30df16 AM |
15162 | if (more_info != NULL) |
| 15163 | free (more_info); | |
| 5bd4f169 | 15164 | } |
| c316a17c AM |
15165 | copy_reloc: |
| 15166 | if (wrel != rel) | |
| 15167 | *wrel = *rel; | |
| 15168 | } | |
| 15169 | ||
| 15170 | if (wrel != rel) | |
| 15171 | { | |
| 15172 | Elf_Internal_Shdr *rel_hdr; | |
| 15173 | size_t deleted = rel - wrel; | |
| 15174 | ||
| 15175 | rel_hdr = _bfd_elf_single_rel_hdr (input_section->output_section); | |
| 15176 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
| 15177 | if (rel_hdr->sh_size == 0) | |
| 15178 | { | |
| 15179 | /* It is too late to remove an empty reloc section. Leave | |
| 15180 | one NONE reloc. | |
| 15181 | ??? What is wrong with an empty section??? */ | |
| 15182 | rel_hdr->sh_size = rel_hdr->sh_entsize; | |
| 15183 | deleted -= 1; | |
| 15184 | } | |
| 15185 | rel_hdr = _bfd_elf_single_rel_hdr (input_section); | |
| 15186 | rel_hdr->sh_size -= rel_hdr->sh_entsize * deleted; | |
| 15187 | input_section->reloc_count -= deleted; | |
| 5bd4f169 AM |
15188 | } |
| 15189 | ||
| 645ea6a9 AM |
15190 | /* If we're emitting relocations, then shortly after this function |
| 15191 | returns, reloc offsets and addends for this section will be | |
| 15192 | adjusted. Worse, reloc symbol indices will be for the output | |
| 8860955f AM |
15193 | file rather than the input. Save a copy of the relocs for |
| 15194 | opd_entry_value. */ | |
| 0e1862bb | 15195 | if (is_opd && (info->emitrelocations || bfd_link_relocatable (info))) |
| 8860955f AM |
15196 | { |
| 15197 | bfd_size_type amt; | |
| 15198 | amt = input_section->reloc_count * sizeof (Elf_Internal_Rela); | |
| 15199 | rel = bfd_alloc (input_bfd, amt); | |
| 729eabd5 AM |
15200 | BFD_ASSERT (ppc64_elf_tdata (input_bfd)->opd.relocs == NULL); |
| 15201 | ppc64_elf_tdata (input_bfd)->opd.relocs = rel; | |
| 8860955f AM |
15202 | if (rel == NULL) |
| 15203 | return FALSE; | |
| 15204 | memcpy (rel, relocs, amt); | |
| 15205 | } | |
| 5bd4f169 AM |
15206 | return ret; |
| 15207 | } | |
| 15208 | ||
| 754021d0 AM |
15209 | /* Adjust the value of any local symbols in opd sections. */ |
| 15210 | ||
| 6e0b88f1 | 15211 | static int |
| 754021d0 AM |
15212 | ppc64_elf_output_symbol_hook (struct bfd_link_info *info, |
| 15213 | const char *name ATTRIBUTE_UNUSED, | |
| 15214 | Elf_Internal_Sym *elfsym, | |
| 15215 | asection *input_sec, | |
| 15216 | struct elf_link_hash_entry *h) | |
| 15217 | { | |
| 74f0fb50 AM |
15218 | struct _opd_sec_data *opd; |
| 15219 | long adjust; | |
| 754021d0 AM |
15220 | bfd_vma value; |
| 15221 | ||
| 4025353c | 15222 | if (h != NULL) |
| 6e0b88f1 | 15223 | return 1; |
| 4025353c | 15224 | |
| 74f0fb50 AM |
15225 | opd = get_opd_info (input_sec); |
| 15226 | if (opd == NULL || opd->adjust == NULL) | |
| 6e0b88f1 | 15227 | return 1; |
| 754021d0 AM |
15228 | |
| 15229 | value = elfsym->st_value - input_sec->output_offset; | |
| 0e1862bb | 15230 | if (!bfd_link_relocatable (info)) |
| 754021d0 AM |
15231 | value -= input_sec->output_section->vma; |
| 15232 | ||
| 51aecdc5 | 15233 | adjust = opd->adjust[OPD_NDX (value)]; |
| 4025353c | 15234 | if (adjust == -1) |
| 6e0b88f1 AM |
15235 | return 2; |
| 15236 | ||
| 15237 | elfsym->st_value += adjust; | |
| 15238 | return 1; | |
| 754021d0 AM |
15239 | } |
| 15240 | ||
| 5bd4f169 AM |
15241 | /* Finish up dynamic symbol handling. We set the contents of various |
| 15242 | dynamic sections here. */ | |
| 15243 | ||
| b34976b6 | 15244 | static bfd_boolean |
| 4ce794b7 AM |
15245 | ppc64_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 15246 | struct bfd_link_info *info, | |
| 15247 | struct elf_link_hash_entry *h, | |
| ab6dce23 | 15248 | Elf_Internal_Sym *sym ATTRIBUTE_UNUSED) |
| 5bd4f169 | 15249 | { |
| 65f38f15 | 15250 | struct ppc_link_hash_table *htab; |
| 8387904d AM |
15251 | struct plt_entry *ent; |
| 15252 | Elf_Internal_Rela rela; | |
| 15253 | bfd_byte *loc; | |
| 5bd4f169 | 15254 | |
| 65f38f15 | 15255 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
15256 | if (htab == NULL) |
| 15257 | return FALSE; | |
| 5bd4f169 | 15258 | |
| 8387904d AM |
15259 | for (ent = h->plt.plist; ent != NULL; ent = ent->next) |
| 15260 | if (ent->plt.offset != (bfd_vma) -1) | |
| 15261 | { | |
| 15262 | /* This symbol has an entry in the procedure linkage | |
| 15263 | table. Set it up. */ | |
| e054468f AM |
15264 | if (!htab->elf.dynamic_sections_created |
| 15265 | || h->dynindx == -1) | |
| 15266 | { | |
| 15267 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
| 15268 | && h->def_regular | |
| 15269 | && (h->root.type == bfd_link_hash_defined | |
| 15270 | || h->root.type == bfd_link_hash_defweak)); | |
| 33e44f2e AM |
15271 | rela.r_offset = (htab->elf.iplt->output_section->vma |
| 15272 | + htab->elf.iplt->output_offset | |
| 25f23106 | 15273 | + ent->plt.offset); |
| ee67d69a AM |
15274 | if (htab->opd_abi) |
| 15275 | rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL); | |
| 15276 | else | |
| 15277 | rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE); | |
| e054468f AM |
15278 | rela.r_addend = (h->root.u.def.value |
| 15279 | + h->root.u.def.section->output_offset | |
| 15280 | + h->root.u.def.section->output_section->vma | |
| 15281 | + ent->addend); | |
| 33e44f2e AM |
15282 | loc = (htab->elf.irelplt->contents |
| 15283 | + (htab->elf.irelplt->reloc_count++ | |
| 25f23106 | 15284 | * sizeof (Elf64_External_Rela))); |
| e054468f AM |
15285 | } |
| 15286 | else | |
| 15287 | { | |
| 33e44f2e AM |
15288 | rela.r_offset = (htab->elf.splt->output_section->vma |
| 15289 | + htab->elf.splt->output_offset | |
| 25f23106 | 15290 | + ent->plt.offset); |
| e054468f AM |
15291 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT); |
| 15292 | rela.r_addend = ent->addend; | |
| 33e44f2e | 15293 | loc = (htab->elf.srelplt->contents |
| b9e5796b AM |
15294 | + ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE (htab)) |
| 15295 | / PLT_ENTRY_SIZE (htab) * sizeof (Elf64_External_Rela))); | |
| e054468f | 15296 | } |
| 8387904d | 15297 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| a345bc8d AM |
15298 | |
| 15299 | if (!htab->opd_abi) | |
| 15300 | { | |
| 15301 | if (!h->def_regular) | |
| 15302 | { | |
| 15303 | /* Mark the symbol as undefined, rather than as | |
| 15304 | defined in glink. Leave the value if there were | |
| 15305 | any relocations where pointer equality matters | |
| 15306 | (this is a clue for the dynamic linker, to make | |
| 15307 | function pointer comparisons work between an | |
| 15308 | application and shared library), otherwise set it | |
| 15309 | to zero. */ | |
| 15310 | sym->st_shndx = SHN_UNDEF; | |
| 15311 | if (!h->pointer_equality_needed) | |
| 15312 | sym->st_value = 0; | |
| 15313 | else if (!h->ref_regular_nonweak) | |
| 15314 | { | |
| 15315 | /* This breaks function pointer comparisons, but | |
| 15316 | that is better than breaking tests for a NULL | |
| 15317 | function pointer. */ | |
| 15318 | sym->st_value = 0; | |
| 15319 | } | |
| 15320 | } | |
| 15321 | } | |
| 8387904d | 15322 | } |
| 5bd4f169 | 15323 | |
| f5385ebf | 15324 | if (h->needs_copy) |
| 5bd4f169 | 15325 | { |
| 65f38f15 | 15326 | /* This symbol needs a copy reloc. Set it up. */ |
| 5bd4f169 | 15327 | |
| 65f38f15 AM |
15328 | if (h->dynindx == -1 |
| 15329 | || (h->root.type != bfd_link_hash_defined | |
| 15330 | && h->root.type != bfd_link_hash_defweak) | |
| 4ce794b7 | 15331 | || htab->relbss == NULL) |
| 65f38f15 | 15332 | abort (); |
| 5bd4f169 AM |
15333 | |
| 15334 | rela.r_offset = (h->root.u.def.value | |
| 15335 | + h->root.u.def.section->output_section->vma | |
| 15336 | + h->root.u.def.section->output_offset); | |
| 15337 | rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY); | |
| 15338 | rela.r_addend = 0; | |
| 4ce794b7 AM |
15339 | loc = htab->relbss->contents; |
| 15340 | loc += htab->relbss->reloc_count++ * sizeof (Elf64_External_Rela); | |
| 65f38f15 | 15341 | bfd_elf64_swap_reloca_out (output_bfd, &rela, loc); |
| 5bd4f169 AM |
15342 | } |
| 15343 | ||
| b34976b6 | 15344 | return TRUE; |
| 5bd4f169 AM |
15345 | } |
| 15346 | ||
| 65f38f15 AM |
15347 | /* Used to decide how to sort relocs in an optimal manner for the |
| 15348 | dynamic linker, before writing them out. */ | |
| 15349 | ||
| 15350 | static enum elf_reloc_type_class | |
| 7e612e98 AM |
15351 | ppc64_elf_reloc_type_class (const struct bfd_link_info *info, |
| 15352 | const asection *rel_sec, | |
| 15353 | const Elf_Internal_Rela *rela) | |
| 65f38f15 | 15354 | { |
| 04c9666a | 15355 | enum elf_ppc64_reloc_type r_type; |
| 7e612e98 AM |
15356 | struct ppc_link_hash_table *htab = ppc_hash_table (info); |
| 15357 | ||
| 33e44f2e | 15358 | if (rel_sec == htab->elf.irelplt) |
| 7e612e98 | 15359 | return reloc_class_ifunc; |
| a33d1f77 | 15360 | |
| 4ce794b7 | 15361 | r_type = ELF64_R_TYPE (rela->r_info); |
| a33d1f77 | 15362 | switch (r_type) |
| 65f38f15 AM |
15363 | { |
| 15364 | case R_PPC64_RELATIVE: | |
| 15365 | return reloc_class_relative; | |
| 15366 | case R_PPC64_JMP_SLOT: | |
| 15367 | return reloc_class_plt; | |
| 15368 | case R_PPC64_COPY: | |
| 15369 | return reloc_class_copy; | |
| 15370 | default: | |
| 15371 | return reloc_class_normal; | |
| 15372 | } | |
| 15373 | } | |
| 15374 | ||
| 5bd4f169 AM |
15375 | /* Finish up the dynamic sections. */ |
| 15376 | ||
| b34976b6 | 15377 | static bfd_boolean |
| 4ce794b7 AM |
15378 | ppc64_elf_finish_dynamic_sections (bfd *output_bfd, |
| 15379 | struct bfd_link_info *info) | |
| 5bd4f169 | 15380 | { |
| 65f38f15 AM |
15381 | struct ppc_link_hash_table *htab; |
| 15382 | bfd *dynobj; | |
| 5bd4f169 | 15383 | asection *sdyn; |
| 5bd4f169 | 15384 | |
| 65f38f15 | 15385 | htab = ppc_hash_table (info); |
| 4dfe6ac6 NC |
15386 | if (htab == NULL) |
| 15387 | return FALSE; | |
| 15388 | ||
| 65f38f15 | 15389 | dynobj = htab->elf.dynobj; |
| 3d4d4302 | 15390 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
| 5bd4f169 | 15391 | |
| 65f38f15 | 15392 | if (htab->elf.dynamic_sections_created) |
| 5bd4f169 | 15393 | { |
| 5bd4f169 AM |
15394 | Elf64_External_Dyn *dyncon, *dynconend; |
| 15395 | ||
| 33e44f2e | 15396 | if (sdyn == NULL || htab->elf.sgot == NULL) |
| 65f38f15 | 15397 | abort (); |
| 5bd4f169 AM |
15398 | |
| 15399 | dyncon = (Elf64_External_Dyn *) sdyn->contents; | |
| eea6121a | 15400 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->size); |
| 5bd4f169 AM |
15401 | for (; dyncon < dynconend; dyncon++) |
| 15402 | { | |
| 15403 | Elf_Internal_Dyn dyn; | |
| 19397422 | 15404 | asection *s; |
| 5bd4f169 AM |
15405 | |
| 15406 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); | |
| 15407 | ||
| 15408 | switch (dyn.d_tag) | |
| 15409 | { | |
| 65f38f15 AM |
15410 | default: |
| 15411 | continue; | |
| 5bd4f169 | 15412 | |
| 5d1634d7 | 15413 | case DT_PPC64_GLINK: |
| 4ce794b7 | 15414 | s = htab->glink; |
| 6348e046 | 15415 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| ad8e1ba5 AM |
15416 | /* We stupidly defined DT_PPC64_GLINK to be the start |
| 15417 | of glink rather than the first entry point, which is | |
| 15418 | what ld.so needs, and now have a bigger stub to | |
| 15419 | support automatic multiple TOCs. */ | |
| b9e5796b | 15420 | dyn.d_un.d_ptr += GLINK_CALL_STUB_SIZE - 8 * 4; |
| 5d1634d7 AM |
15421 | break; |
| 15422 | ||
| 19397422 AM |
15423 | case DT_PPC64_OPD: |
| 15424 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
15425 | if (s == NULL) |
| 15426 | continue; | |
| 15427 | dyn.d_un.d_ptr = s->vma; | |
| 19397422 AM |
15428 | break; |
| 15429 | ||
| e8910a83 AM |
15430 | case DT_PPC64_OPT: |
| 15431 | if (htab->do_multi_toc && htab->multi_toc_needed) | |
| 15432 | dyn.d_un.d_val |= PPC64_OPT_MULTI_TOC; | |
| 15433 | break; | |
| 15434 | ||
| 19397422 AM |
15435 | case DT_PPC64_OPDSZ: |
| 15436 | s = bfd_get_section_by_name (output_bfd, ".opd"); | |
| 6348e046 AM |
15437 | if (s == NULL) |
| 15438 | continue; | |
| eea6121a | 15439 | dyn.d_un.d_val = s->size; |
| 19397422 AM |
15440 | break; |
| 15441 | ||
| 65f38f15 | 15442 | case DT_PLTGOT: |
| 33e44f2e | 15443 | s = htab->elf.splt; |
| 6348e046 | 15444 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 AM |
15445 | break; |
| 15446 | ||
| 15447 | case DT_JMPREL: | |
| 33e44f2e | 15448 | s = htab->elf.srelplt; |
| 6348e046 | 15449 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; |
| 65f38f15 | 15450 | break; |
| 5bd4f169 | 15451 | |
| 65f38f15 | 15452 | case DT_PLTRELSZ: |
| 33e44f2e | 15453 | dyn.d_un.d_val = htab->elf.srelplt->size; |
| 5d1634d7 AM |
15454 | break; |
| 15455 | ||
| 15456 | case DT_RELASZ: | |
| 15457 | /* Don't count procedure linkage table relocs in the | |
| 15458 | overall reloc count. */ | |
| 33e44f2e | 15459 | s = htab->elf.srelplt; |
| 6348e046 AM |
15460 | if (s == NULL) |
| 15461 | continue; | |
| eea6121a | 15462 | dyn.d_un.d_val -= s->size; |
| 6348e046 AM |
15463 | break; |
| 15464 | ||
| 15465 | case DT_RELA: | |
| 15466 | /* We may not be using the standard ELF linker script. | |
| 15467 | If .rela.plt is the first .rela section, we adjust | |
| 15468 | DT_RELA to not include it. */ | |
| 33e44f2e | 15469 | s = htab->elf.srelplt; |
| 6348e046 AM |
15470 | if (s == NULL) |
| 15471 | continue; | |
| 15472 | if (dyn.d_un.d_ptr != s->output_section->vma + s->output_offset) | |
| 15473 | continue; | |
| eea6121a | 15474 | dyn.d_un.d_ptr += s->size; |
| 65f38f15 | 15475 | break; |
| 5bd4f169 | 15476 | } |
| 5bd4f169 | 15477 | |
| 65f38f15 | 15478 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 5bd4f169 | 15479 | } |
| 5bd4f169 AM |
15480 | } |
| 15481 | ||
| 33e44f2e | 15482 | if (htab->elf.sgot != NULL && htab->elf.sgot->size != 0) |
| 5d1634d7 AM |
15483 | { |
| 15484 | /* Fill in the first entry in the global offset table. | |
| 15485 | We use it to hold the link-time TOCbase. */ | |
| 15486 | bfd_put_64 (output_bfd, | |
| 60ee0d4a | 15487 | elf_gp (output_bfd) + TOC_BASE_OFF, |
| 33e44f2e | 15488 | htab->elf.sgot->contents); |
| 5d1634d7 AM |
15489 | |
| 15490 | /* Set .got entry size. */ | |
| 33e44f2e | 15491 | elf_section_data (htab->elf.sgot->output_section)->this_hdr.sh_entsize = 8; |
| 5d1634d7 AM |
15492 | } |
| 15493 | ||
| 33e44f2e | 15494 | if (htab->elf.splt != NULL && htab->elf.splt->size != 0) |
| 5d1634d7 AM |
15495 | { |
| 15496 | /* Set .plt entry size. */ | |
| 33e44f2e | 15497 | elf_section_data (htab->elf.splt->output_section)->this_hdr.sh_entsize |
| b9e5796b | 15498 | = PLT_ENTRY_SIZE (htab); |
| 5d1634d7 AM |
15499 | } |
| 15500 | ||
| 84f5d08e AM |
15501 | /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for |
| 15502 | brlt ourselves if emitrelocations. */ | |
| 15503 | if (htab->brlt != NULL | |
| 15504 | && htab->brlt->reloc_count != 0 | |
| 15505 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15506 | htab->brlt, | |
| d4730f92 | 15507 | elf_section_data (htab->brlt)->rela.hdr, |
| 84f5d08e AM |
15508 | elf_section_data (htab->brlt)->relocs, |
| 15509 | NULL)) | |
| 15510 | return FALSE; | |
| 15511 | ||
| 176a0d42 AM |
15512 | if (htab->glink != NULL |
| 15513 | && htab->glink->reloc_count != 0 | |
| 15514 | && !_bfd_elf_link_output_relocs (output_bfd, | |
| 15515 | htab->glink, | |
| d4730f92 | 15516 | elf_section_data (htab->glink)->rela.hdr, |
| 176a0d42 AM |
15517 | elf_section_data (htab->glink)->relocs, |
| 15518 | NULL)) | |
| 15519 | return FALSE; | |
| 15520 | ||
| 58d180e8 | 15521 | if (htab->glink_eh_frame != NULL |
| da44f4e5 AM |
15522 | && htab->glink_eh_frame->size != 0) |
| 15523 | { | |
| 15524 | bfd_vma val; | |
| 15525 | bfd_byte *p; | |
| 15526 | asection *stub_sec; | |
| 15527 | ||
| 15528 | p = htab->glink_eh_frame->contents + sizeof (glink_eh_frame_cie); | |
| 15529 | for (stub_sec = htab->params->stub_bfd->sections; | |
| 15530 | stub_sec != NULL; | |
| 15531 | stub_sec = stub_sec->next) | |
| 15532 | if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) | |
| 15533 | { | |
| 15534 | /* FDE length. */ | |
| 15535 | p += 4; | |
| 15536 | /* CIE pointer. */ | |
| 15537 | p += 4; | |
| 15538 | /* Offset to stub section. */ | |
| 15539 | val = (stub_sec->output_section->vma | |
| 15540 | + stub_sec->output_offset); | |
| 15541 | val -= (htab->glink_eh_frame->output_section->vma | |
| 15542 | + htab->glink_eh_frame->output_offset | |
| 15543 | + (p - htab->glink_eh_frame->contents)); | |
| 15544 | if (val + 0x80000000 > 0xffffffff) | |
| 15545 | { | |
| 15546 | info->callbacks->einfo | |
| 15547 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
| 15548 | stub_sec->name); | |
| 15549 | return FALSE; | |
| 15550 | } | |
| 15551 | bfd_put_32 (dynobj, val, p); | |
| 15552 | p += 4; | |
| 15553 | /* stub section size. */ | |
| 15554 | p += 4; | |
| 15555 | /* Augmentation. */ | |
| 15556 | p += 1; | |
| 15557 | /* Pad. */ | |
| 15558 | p += 7; | |
| 15559 | } | |
| 15560 | if (htab->glink != NULL && htab->glink->size != 0) | |
| 15561 | { | |
| 15562 | /* FDE length. */ | |
| 15563 | p += 4; | |
| 15564 | /* CIE pointer. */ | |
| 15565 | p += 4; | |
| 15566 | /* Offset to .glink. */ | |
| 15567 | val = (htab->glink->output_section->vma | |
| 15568 | + htab->glink->output_offset | |
| 15569 | + 8); | |
| 15570 | val -= (htab->glink_eh_frame->output_section->vma | |
| 15571 | + htab->glink_eh_frame->output_offset | |
| 15572 | + (p - htab->glink_eh_frame->contents)); | |
| 15573 | if (val + 0x80000000 > 0xffffffff) | |
| 15574 | { | |
| 15575 | info->callbacks->einfo | |
| 15576 | (_("%P: %s offset too large for .eh_frame sdata4 encoding"), | |
| 15577 | htab->glink->name); | |
| 15578 | return FALSE; | |
| 15579 | } | |
| 15580 | bfd_put_32 (dynobj, val, p); | |
| 15581 | p += 4; | |
| 15582 | /* .glink size. */ | |
| 15583 | p += 4; | |
| 15584 | /* Augmentation. */ | |
| 15585 | p += 1; | |
| 15586 | /* Ops. */ | |
| 15587 | p += 7; | |
| 15588 | } | |
| 15589 | ||
| 15590 | if (htab->glink_eh_frame->sec_info_type == SEC_INFO_TYPE_EH_FRAME | |
| 15591 | && !_bfd_elf_write_section_eh_frame (output_bfd, info, | |
| 15592 | htab->glink_eh_frame, | |
| 15593 | htab->glink_eh_frame->contents)) | |
| 15594 | return FALSE; | |
| 15595 | } | |
| 58d180e8 | 15596 | |
| e717da7e | 15597 | /* We need to handle writing out multiple GOT sections ourselves, |
| 7b53ace3 AM |
15598 | since we didn't add them to DYNOBJ. We know dynobj is the first |
| 15599 | bfd. */ | |
| c72f2fb2 | 15600 | while ((dynobj = dynobj->link.next) != NULL) |
| e717da7e AM |
15601 | { |
| 15602 | asection *s; | |
| 7b53ace3 | 15603 | |
| 0c8d6e5c | 15604 | if (!is_ppc64_elf (dynobj)) |
| 7b53ace3 AM |
15605 | continue; |
| 15606 | ||
| e717da7e AM |
15607 | s = ppc64_elf_tdata (dynobj)->got; |
| 15608 | if (s != NULL | |
| eea6121a | 15609 | && s->size != 0 |
| e717da7e AM |
15610 | && s->output_section != bfd_abs_section_ptr |
| 15611 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15612 | s->contents, s->output_offset, | |
| eea6121a | 15613 | s->size)) |
| e717da7e AM |
15614 | return FALSE; |
| 15615 | s = ppc64_elf_tdata (dynobj)->relgot; | |
| 15616 | if (s != NULL | |
| eea6121a | 15617 | && s->size != 0 |
| e717da7e AM |
15618 | && s->output_section != bfd_abs_section_ptr |
| 15619 | && !bfd_set_section_contents (output_bfd, s->output_section, | |
| 15620 | s->contents, s->output_offset, | |
| eea6121a | 15621 | s->size)) |
| e717da7e AM |
15622 | return FALSE; |
| 15623 | } | |
| f6c52c13 | 15624 | |
| b34976b6 | 15625 | return TRUE; |
| 5bd4f169 AM |
15626 | } |
| 15627 | ||
| 5bd4f169 | 15628 | #include "elf64-target.h" |
| 7b8e7dad AM |
15629 | |
| 15630 | /* FreeBSD support */ | |
| 15631 | ||
| 15632 | #undef TARGET_LITTLE_SYM | |
| 15633 | #undef TARGET_LITTLE_NAME | |
| 15634 | ||
| 15635 | #undef TARGET_BIG_SYM | |
| 6d00b590 | 15636 | #define TARGET_BIG_SYM powerpc_elf64_fbsd_vec |
| 7b8e7dad AM |
15637 | #undef TARGET_BIG_NAME |
| 15638 | #define TARGET_BIG_NAME "elf64-powerpc-freebsd" | |
| 15639 | ||
| 15640 | #undef ELF_OSABI | |
| 15641 | #define ELF_OSABI ELFOSABI_FREEBSD | |
| 15642 | ||
| 15643 | #undef elf64_bed | |
| 15644 | #define elf64_bed elf64_powerpc_fbsd_bed | |
| 15645 | ||
| 15646 | #include "elf64-target.h" | |
| 15647 |